diff --git a/README.md b/README.md index 0b1f0c98a..e8094265a 100644 --- a/README.md +++ b/README.md @@ -6,13 +6,13 @@ DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. -It's also very simple to use and get started with. DOMPurify was [started in February 2014](https://github.com/cure53/DOMPurify/commit/a630922616927373485e0e787ab19e73e3691b2b) and, meanwhile, has reached version **v3.1.7**. +It's also very simple to use and get started with. DOMPurify was [started in February 2014](https://github.com/cure53/DOMPurify/commit/a630922616927373485e0e787ab19e73e3691b2b) and, meanwhile, has reached version **v3.2.0**. DOMPurify is written in JavaScript and works in all modern browsers (Safari (10+), Opera (15+), Edge, Firefox and Chrome - as well as almost anything else using Blink, Gecko or WebKit). It doesn't break on MSIE or other legacy browsers. It simply does nothing. **Note that [DOMPurify v2.5.7](https://github.com/cure53/DOMPurify/releases/tag/2.5.7) is the latest version supporting MSIE. For important security updates compatible with MSIE, please use the [2.x branch](https://github.com/cure53/DOMPurify/tree/2.x).** -Our automated tests cover [19 different browsers](https://github.com/cure53/DOMPurify/blob/main/test/karma.custom-launchers.config.js#L5) right now, more to come. We also cover Node.js v16.x, v17.x, v18.x and v19.x, running DOMPurify on [jsdom](https://github.com/jsdom/jsdom). Older Node versions are known to work as well, but hey... no guarantees. +Our automated tests cover [24 different browsers](https://github.com/cure53/DOMPurify/blob/main/test/karma.custom-launchers.config.js#L5) right now, more to come. We also cover Node.js v16.x, v17.x, v18.x and v19.x, running DOMPurify on [jsdom](https://github.com/jsdom/jsdom). Older Node versions are known to work as well, but hey... no guarantees. DOMPurify is written by security people who have vast background in web attacks and XSS. Fear not. For more details please also read about our [Security Goals & Threat Model](https://github.com/cure53/DOMPurify/wiki/Security-Goals-&-Threat-Model). Please, read it. Like, really. @@ -57,10 +57,6 @@ Note that by default, we permit HTML, SVG **and** MathML. If you only need HTML, const clean = DOMPurify.sanitize(dirty, { USE_PROFILES: { html: true } }); ``` -### Where are the TypeScript type definitions? - -They can be found here: [@types/dompurify](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/dompurify) - ### Is there any foot-gun potential? Well, please note, if you _first_ sanitize HTML and then modify it _afterwards_, you might easily **void the effects of sanitization**. If you feed the sanitized markup to another library _after_ sanitization, please be certain that the library doesn't mess around with the HTML on its own. diff --git a/bower.json b/bower.json index 3db27572d..bbfbadedf 100644 --- a/bower.json +++ b/bower.json @@ -1,6 +1,6 @@ { "name": "dompurify", - "version": "3.1.7", + "version": "3.2.0", "homepage": "https://github.com/cure53/DOMPurify", "author": "Cure53 ", "description": "A DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG", diff --git a/dist/purify.cjs.d.ts b/dist/purify.cjs.d.ts new file mode 100644 index 000000000..ab7c591f4 --- /dev/null +++ b/dist/purify.cjs.d.ts @@ -0,0 +1,401 @@ +/*! @license DOMPurify 3.2.0 | (c) Cure53 and other contributors | Released under the Apache license 2.0 and Mozilla Public License 2.0 | github.com/cure53/DOMPurify/blob/3.2.0/LICENSE */ + +/** + * Configuration to control DOMPurify behavior. + */ +interface Config { + /** + * Extend the existing array of allowed attributes. + */ + ADD_ATTR?: string[] | undefined; + /** + * Extend the existing array of elements that can use Data URIs. + */ + ADD_DATA_URI_TAGS?: string[] | undefined; + /** + * Extend the existing array of allowed tags. + */ + ADD_TAGS?: string[] | undefined; + /** + * Extend the existing array of elements that are safe for URI-like values (be careful, XSS risk). + */ + ADD_URI_SAFE_ATTR?: string[] | undefined; + /** + * Allow ARIA attributes, leave other safe HTML as is (default is true). + */ + ALLOW_ARIA_ATTR?: boolean | undefined; + /** + * Allow HTML5 data attributes, leave other safe HTML as is (default is true). + */ + ALLOW_DATA_ATTR?: boolean | undefined; + /** + * Allow external protocol handlers in URL attributes (default is false, be careful, XSS risk). + * By default only `http`, `https`, `ftp`, `ftps`, `tel`, `mailto`, `callto`, `sms`, `cid` and `xmpp` are allowed. + */ + ALLOW_UNKNOWN_PROTOCOLS?: boolean | undefined; + /** + * Decide if self-closing tags in attributes are allowed. + * Usually removed due to a mXSS issue in jQuery 3.0. + */ + ALLOW_SELF_CLOSE_IN_ATTR?: boolean | undefined; + /** + * Allow only specific attributes. + */ + ALLOWED_ATTR?: string[] | undefined; + /** + * Allow only specific elements. + */ + ALLOWED_TAGS?: string[] | undefined; + /** + * Allow only specific namespaces. Defaults to: + * - `http://www.w3.org/1999/xhtml` + * - `http://www.w3.org/2000/svg` + * - `http://www.w3.org/1998/Math/MathML` + */ + ALLOWED_NAMESPACES?: string[] | undefined; + /** + * Allow specific protocols handlers in URL attributes via regex (be careful, XSS risk). + * Default RegExp: + * ``` + * /^(?:(?:(?:f|ht)tps?|mailto|tel|callto|sms|cid|xmpp):|[^a-z]|[a-z+.\-]+(?:[^a-z+.\-:]|$))/i; + * ``` + */ + ALLOWED_URI_REGEXP?: RegExp | undefined; + /** + * Define how custom elements are handled. + */ + CUSTOM_ELEMENT_HANDLING?: { + /** + * Regular expression or function to match to allowed elements. + * Default is null (disallow any custom elements). + */ + tagNameCheck?: RegExp | ((tagName: string) => boolean) | null | undefined; + /** + * Regular expression or function to match to allowed attributes. + * Default is null (disallow any attributes not on the allow list). + */ + attributeNameCheck?: RegExp | ((attributeName: string) => boolean) | null | undefined; + /** + * Allow custom elements derived from built-ins if they pass `tagNameCheck`. Default is false. + */ + allowCustomizedBuiltInElements?: boolean | undefined; + }; + /** + * Add attributes to block-list. + */ + FORBID_ATTR?: string[] | undefined; + /** + * Add child elements to be removed when their parent is removed. + */ + FORBID_CONTENTS?: string[] | undefined; + /** + * Add elements to block-list. + */ + FORBID_TAGS?: string[] | undefined; + /** + * Glue elements like style, script or others to `document.body` and prevent unintuitive browser behavior in several edge-cases (default is false). + */ + FORCE_BODY?: boolean | undefined; + /** + * Map of non-standard HTML element names to support. Map to true to enable support. For example: + * + * ``` + * HTML_INTEGRATION_POINTS: { foreignobject: true } + * ``` + */ + HTML_INTEGRATION_POINTS?: Record | undefined; + /** + * Sanitize a node "in place", which is much faster depending on how you use DOMPurify. + */ + IN_PLACE?: boolean | undefined; + /** + * Keep an element's content when the element is removed (default is true). + */ + KEEP_CONTENT?: boolean | undefined; + /** + * Map of MathML element names to support. Map to true to enable support. For example: + * + * ``` + * MATHML_TEXT_INTEGRATION_POINTS: { mtext: true } + * ``` + */ + MATHML_TEXT_INTEGRATION_POINTS?: Record | undefined; + /** + * Change the default namespace from HTML to something different. + */ + NAMESPACE?: string | undefined; + /** + * Change the parser type so sanitized data is treated as XML and not as HTML, which is the default. + */ + PARSER_MEDIA_TYPE?: DOMParserSupportedType | undefined; + /** + * Return a DOM `DocumentFragment` instead of an HTML string (default is false). + */ + RETURN_DOM_FRAGMENT?: boolean | undefined; + /** + * Return a DOM `HTMLBodyElement` instead of an HTML string (default is false). + */ + RETURN_DOM?: boolean | undefined; + /** + * Return a TrustedHTML object instead of a string if possible. + */ + RETURN_TRUSTED_TYPE?: boolean | undefined; + /** + * Strip `{{ ... }}`, `${ ... }` and `<% ... %>` to make output safe for template systems. + * Be careful please, this mode is not recommended for production usage. + * Allowing template parsing in user-controlled HTML is not advised at all. + * Only use this mode if there is really no alternative. + */ + SAFE_FOR_TEMPLATES?: boolean | undefined; + /** + * Change how e.g. comments containing risky HTML characters are treated. + * Be very careful, this setting should only be set to `false` if you really only handle + * HTML and nothing else, no SVG, MathML or the like. + * Otherwise, changing from `true` to `false` will lead to XSS in this or some other way. + */ + SAFE_FOR_XML?: boolean | undefined; + /** + * Use DOM Clobbering protection on output (default is true, handle with care, minor XSS risks here). + */ + SANITIZE_DOM?: boolean | undefined; + /** + * Enforce strict DOM Clobbering protection via namespace isolation (default is false). + * When enabled, isolates the namespace of named properties (i.e., `id` and `name` attributes) + * from JS variables by prefixing them with the string `user-content-` + */ + SANITIZE_NAMED_PROPS?: boolean | undefined; + /** + * Supplied policy must define `createHTML` and `createScriptURL`. + */ + TRUSTED_TYPES_POLICY?: TrustedTypePolicy | undefined; + /** + * Controls categories of allowed elements. + * + * Note that the `USE_PROFILES` setting will override the `ALLOWED_TAGS` setting + * so don't use them together. + */ + USE_PROFILES?: false | UseProfilesConfig | undefined; + /** + * Return entire document including tags (default is false). + */ + WHOLE_DOCUMENT?: boolean | undefined; +} +/** + * Defines categories of allowed elements. + */ +interface UseProfilesConfig { + /** + * Allow all safe MathML elements. + */ + mathMl?: boolean | undefined; + /** + * Allow all safe SVG elements. + */ + svg?: boolean | undefined; + /** + * Allow all save SVG Filters. + */ + svgFilters?: boolean | undefined; + /** + * Allow all safe HTML elements. + */ + html?: boolean | undefined; +} + +declare const _default: DOMPurify; + +interface DOMPurify { + /** + * Creates a DOMPurify instance using the given window-like object. + */ + (root: WindowLike): DOMPurify; + /** + * Version label, exposed for easier checks + * if DOMPurify is up to date or not + */ + version: string; + /** + * Array of elements that DOMPurify removed during sanitation. + * Empty if nothing was removed. + */ + removed: Array; + /** + * Expose whether this browser supports running the full DOMPurify. + */ + isSupported: boolean; + /** + * Set the configuration once. + * + * @param cfg configuration object + */ + setConfig(cfg?: Config): void; + /** + * Removes the configuration. + */ + clearConfig(): void; + /** + * Provides core sanitation functionality. + * + * @param dirty string or DOM node + * @param cfg object + * @returns Sanitized TrustedHTML. + */ + sanitize(dirty: string | Node, cfg: Config & { + RETURN_TRUSTED_TYPE: true; + }): TrustedHTML; + /** + * Provides core sanitation functionality. + * + * @param dirty DOM node + * @param cfg object + * @returns Sanitized DOM node. + */ + sanitize(dirty: Node, cfg: Config & { + IN_PLACE: true; + }): Node; + /** + * Provides core sanitation functionality. + * + * @param dirty string or DOM node + * @param cfg object + * @returns Sanitized DOM node. + */ + sanitize(dirty: string | Node, cfg: Config & { + RETURN_DOM: true; + }): Node; + /** + * Provides core sanitation functionality. + * + * @param dirty string or DOM node + * @param cfg object + * @returns Sanitized document fragment. + */ + sanitize(dirty: string | Node, cfg: Config & { + RETURN_DOM_FRAGMENT: true; + }): DocumentFragment; + /** + * Provides core sanitation functionality. + * + * @param dirty string or DOM node + * @param cfg object + * @returns Sanitized string. + */ + sanitize(dirty: string | Node, cfg?: Config): string; + /** + * Checks if an attribute value is valid. + * Uses last set config, if any. Otherwise, uses config defaults. + * + * @param tag Tag name of containing element. + * @param attr Attribute name. + * @param value Attribute value. + * @returns Returns true if `value` is valid. Otherwise, returns false. + */ + isValidAttribute(tag: string, attr: string, value: string): boolean; + /** + * Adds a DOMPurify hook. + * + * @param entryPoint entry point for the hook to add + * @param hookFunction function to execute + */ + addHook(entryPoint: BasicHookName, hookFunction: Hook): void; + /** + * Adds a DOMPurify hook. + * + * @param entryPoint entry point for the hook to add + * @param hookFunction function to execute + */ + addHook(entryPoint: 'uponSanitizeElement', hookFunction: UponSanitizeElementHook): void; + /** + * Adds a DOMPurify hook. + * + * @param entryPoint entry point for the hook to add + * @param hookFunction function to execute + */ + addHook(entryPoint: 'uponSanitizeAttribute', hookFunction: UponSanitizeAttributeHook): void; + /** + * Remove a DOMPurify hook at a given entryPoint + * (pops it from the stack of hooks if more are present) + * + * @param entryPoint entry point for the hook to remove + * @returns removed(popped) hook + */ + removeHook(entryPoint: BasicHookName): Hook | undefined; + /** + * Remove a DOMPurify hook at a given entryPoint + * (pops it from the stack of hooks if more are present) + * + * @param entryPoint entry point for the hook to remove + * @returns removed(popped) hook + */ + removeHook(entryPoint: 'uponSanitizeElement'): UponSanitizeElementHook | undefined; + /** + * Remove a DOMPurify hook at a given entryPoint + * (pops it from the stack of hooks if more are present) + * + * @param entryPoint entry point for the hook to remove + * @returns removed(popped) hook + */ + removeHook(entryPoint: 'uponSanitizeAttribute'): UponSanitizeAttributeHook | undefined; + /** + * Removes all DOMPurify hooks at a given entryPoint + * + * @param entryPoint entry point for the hooks to remove + */ + removeHooks(entryPoint: HookName): void; + /** + * Removes all DOMPurify hooks. + */ + removeAllHooks(): void; +} +/** + * An element removed by DOMPurify. + */ +interface RemovedElement { + /** + * The element that was removed. + */ + element: Node; +} +/** + * An element removed by DOMPurify. + */ +interface RemovedAttribute { + /** + * The attribute that was removed. + */ + attribute: Attr | null; + /** + * The element that the attribute was removed. + */ + from: Node; +} +type BasicHookName = 'beforeSanitizeElements' | 'afterSanitizeElements' | 'beforeSanitizeAttributes' | 'afterSanitizeAttributes' | 'beforeSanitizeShadowDOM' | 'uponSanitizeShadowNode' | 'afterSanitizeShadowDOM'; +type UponSanitizeElementHookName = 'uponSanitizeElement'; +type UponSanitizeAttributeHookName = 'uponSanitizeAttribute'; +type HookName = BasicHookName | UponSanitizeElementHookName | UponSanitizeAttributeHookName; +type Hook = (this: DOMPurify, currentNode: Node, hookEvent: null, config: Config) => void; +type UponSanitizeElementHook = (this: DOMPurify, currentNode: Node, hookEvent: UponSanitizeElementHookEvent, config: Config) => void; +type UponSanitizeAttributeHook = (this: DOMPurify, currentNode: Node, hookEvent: UponSanitizeAttributeHookEvent, config: Config) => void; +interface UponSanitizeElementHookEvent { + tagName: string; + allowedTags: Record; +} +interface UponSanitizeAttributeHookEvent { + attrName: string; + attrValue: string; + keepAttr: boolean; + allowedAttributes: Record; + forceKeepAttr: boolean | undefined; +} +/** + * A `Window`-like object containing the properties and types that DOMPurify requires. + */ +type WindowLike = Pick & { + document?: Document; + MozNamedAttrMap?: typeof window.NamedNodeMap; + trustedTypes?: typeof window.trustedTypes; +}; + +export { type Config, type Hook, type HookName, type RemovedAttribute, type RemovedElement, type UponSanitizeAttributeHook, type UponSanitizeAttributeHookEvent, type UponSanitizeElementHook, type UponSanitizeElementHookEvent, type WindowLike }; + +export = _default; diff --git a/dist/purify.cjs.js b/dist/purify.cjs.js index 4d2e86f5f..24913b4e8 100644 --- a/dist/purify.cjs.js +++ b/dist/purify.cjs.js @@ -1,4 +1,4 @@ -/*! @license DOMPurify 3.1.7 | (c) Cure53 and other contributors | Released under the Apache license 2.0 and Mozilla Public License 2.0 | github.com/cure53/DOMPurify/blob/3.1.7/LICENSE */ +/*! @license DOMPurify 3.2.0 | (c) Cure53 and other contributors | Released under the Apache license 2.0 and Mozilla Public License 2.0 | github.com/cure53/DOMPurify/blob/3.2.0/LICENSE */ 'use strict'; @@ -50,12 +50,11 @@ const stringTrim = unapply(String.prototype.trim); const objectHasOwnProperty = unapply(Object.prototype.hasOwnProperty); const regExpTest = unapply(RegExp.prototype.test); const typeErrorCreate = unconstruct(TypeError); - /** * Creates a new function that calls the given function with a specified thisArg and arguments. * - * @param {Function} func - The function to be wrapped and called. - * @returns {Function} A new function that calls the given function with a specified thisArg and arguments. + * @param func - The function to be wrapped and called. + * @returns A new function that calls the given function with a specified thisArg and arguments. */ function unapply(func) { return function (thisArg) { @@ -65,12 +64,11 @@ function unapply(func) { return apply(func, thisArg, args); }; } - /** * Creates a new function that constructs an instance of the given constructor function with the provided arguments. * - * @param {Function} func - The constructor function to be wrapped and called. - * @returns {Function} A new function that constructs an instance of the given constructor function with the provided arguments. + * @param func - The constructor function to be wrapped and called. + * @returns A new function that constructs an instance of the given constructor function with the provided arguments. */ function unconstruct(func) { return function () { @@ -80,14 +78,13 @@ function unconstruct(func) { return construct(func, args); }; } - /** * Add properties to a lookup table * - * @param {Object} set - The set to which elements will be added. - * @param {Array} array - The array containing elements to be added to the set. - * @param {Function} transformCaseFunc - An optional function to transform the case of each element before adding to the set. - * @returns {Object} The modified set with added elements. + * @param set - The set to which elements will be added. + * @param array - The array containing elements to be added to the set. + * @param transformCaseFunc - An optional function to transform the case of each element before adding to the set. + * @returns The modified set with added elements. */ function addToSet(set, array) { let transformCaseFunc = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : stringToLowerCase; @@ -114,12 +111,11 @@ function addToSet(set, array) { } return set; } - /** * Clean up an array to harden against CSPP * - * @param {Array} array - The array to be cleaned. - * @returns {Array} The cleaned version of the array + * @param array - The array to be cleaned. + * @returns The cleaned version of the array */ function cleanArray(array) { for (let index = 0; index < array.length; index++) { @@ -130,12 +126,11 @@ function cleanArray(array) { } return array; } - /** * Shallow clone an object * - * @param {Object} object - The object to be cloned. - * @returns {Object} A new object that copies the original. + * @param object - The object to be cloned. + * @returns A new object that copies the original. */ function clone(object) { const newObject = create(null); @@ -153,13 +148,12 @@ function clone(object) { } return newObject; } - /** * This method automatically checks if the prop is function or getter and behaves accordingly. * - * @param {Object} object - The object to look up the getter function in its prototype chain. - * @param {String} prop - The property name for which to find the getter function. - * @returns {Function} The getter function found in the prototype chain or a fallback function. + * @param object - The object to look up the getter function in its prototype chain. + * @param prop - The property name for which to find the getter function. + * @returns The getter function found in the prototype chain or a fallback function. */ function lookupGetter(object, prop) { while (object !== null) { @@ -181,18 +175,15 @@ function lookupGetter(object, prop) { } const html$1 = freeze(['a', 'abbr', 'acronym', 'address', 'area', 'article', 'aside', 'audio', 'b', 'bdi', 'bdo', 'big', 'blink', 'blockquote', 'body', 'br', 'button', 'canvas', 'caption', 'center', 'cite', 'code', 'col', 'colgroup', 'content', 'data', 'datalist', 'dd', 'decorator', 'del', 'details', 'dfn', 'dialog', 'dir', 'div', 'dl', 'dt', 'element', 'em', 'fieldset', 'figcaption', 'figure', 'font', 'footer', 'form', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'head', 'header', 'hgroup', 'hr', 'html', 'i', 'img', 'input', 'ins', 'kbd', 'label', 'legend', 'li', 'main', 'map', 'mark', 'marquee', 'menu', 'menuitem', 'meter', 'nav', 'nobr', 'ol', 'optgroup', 'option', 'output', 'p', 'picture', 'pre', 'progress', 'q', 'rp', 'rt', 'ruby', 's', 'samp', 'section', 'select', 'shadow', 'small', 'source', 'spacer', 'span', 'strike', 'strong', 'style', 'sub', 'summary', 'sup', 'table', 'tbody', 'td', 'template', 'textarea', 'tfoot', 'th', 'thead', 'time', 'tr', 'track', 'tt', 'u', 'ul', 'var', 'video', 'wbr']); - // SVG const svg$1 = freeze(['svg', 'a', 'altglyph', 'altglyphdef', 'altglyphitem', 'animatecolor', 'animatemotion', 'animatetransform', 'circle', 'clippath', 'defs', 'desc', 'ellipse', 'filter', 'font', 'g', 'glyph', 'glyphref', 'hkern', 'image', 'line', 'lineargradient', 'marker', 'mask', 'metadata', 'mpath', 'path', 'pattern', 'polygon', 'polyline', 'radialgradient', 'rect', 'stop', 'style', 'switch', 'symbol', 'text', 'textpath', 'title', 'tref', 'tspan', 'view', 'vkern']); const svgFilters = freeze(['feBlend', 'feColorMatrix', 'feComponentTransfer', 'feComposite', 'feConvolveMatrix', 'feDiffuseLighting', 'feDisplacementMap', 'feDistantLight', 'feDropShadow', 'feFlood', 'feFuncA', 'feFuncB', 'feFuncG', 'feFuncR', 'feGaussianBlur', 'feImage', 'feMerge', 'feMergeNode', 'feMorphology', 'feOffset', 'fePointLight', 'feSpecularLighting', 'feSpotLight', 'feTile', 'feTurbulence']); - // List of SVG elements that are disallowed by default. // We still need to know them so that we can do namespace // checks properly in case one wants to add them to // allow-list. const svgDisallowed = freeze(['animate', 'color-profile', 'cursor', 'discard', 'font-face', 'font-face-format', 'font-face-name', 'font-face-src', 'font-face-uri', 'foreignobject', 'hatch', 'hatchpath', 'mesh', 'meshgradient', 'meshpatch', 'meshrow', 'missing-glyph', 'script', 'set', 'solidcolor', 'unknown', 'use']); const mathMl$1 = freeze(['math', 'menclose', 'merror', 'mfenced', 'mfrac', 'mglyph', 'mi', 'mlabeledtr', 'mmultiscripts', 'mn', 'mo', 'mover', 'mpadded', 'mphantom', 'mroot', 'mrow', 'ms', 'mspace', 'msqrt', 'mstyle', 'msub', 'msup', 'msubsup', 'mtable', 'mtd', 'mtext', 'mtr', 'munder', 'munderover', 'mprescripts']); - // Similarly to SVG, we want to know all MathML elements, // even those that we disallow by default. const mathMlDisallowed = freeze(['maction', 'maligngroup', 'malignmark', 'mlongdiv', 'mscarries', 'mscarry', 'msgroup', 'mstack', 'msline', 'msrow', 'semantics', 'annotation', 'annotation-xml', 'mprescripts', 'none']); @@ -219,18 +210,19 @@ const CUSTOM_ELEMENT = seal(/^[a-z][.\w]*(-[.\w]+)+$/i); var EXPRESSIONS = /*#__PURE__*/Object.freeze({ __proto__: null, - MUSTACHE_EXPR: MUSTACHE_EXPR, - ERB_EXPR: ERB_EXPR, - TMPLIT_EXPR: TMPLIT_EXPR, - DATA_ATTR: DATA_ATTR, ARIA_ATTR: ARIA_ATTR, - IS_ALLOWED_URI: IS_ALLOWED_URI, - IS_SCRIPT_OR_DATA: IS_SCRIPT_OR_DATA, ATTR_WHITESPACE: ATTR_WHITESPACE, + CUSTOM_ELEMENT: CUSTOM_ELEMENT, + DATA_ATTR: DATA_ATTR, DOCTYPE_NAME: DOCTYPE_NAME, - CUSTOM_ELEMENT: CUSTOM_ELEMENT + ERB_EXPR: ERB_EXPR, + IS_ALLOWED_URI: IS_ALLOWED_URI, + IS_SCRIPT_OR_DATA: IS_SCRIPT_OR_DATA, + MUSTACHE_EXPR: MUSTACHE_EXPR, + TMPLIT_EXPR: TMPLIT_EXPR }); +/* eslint-disable @typescript-eslint/indent */ // https://developer.mozilla.org/en-US/docs/Web/API/Node/nodeType const NODE_TYPE = { element: 1, @@ -251,20 +243,18 @@ const NODE_TYPE = { const getGlobal = function getGlobal() { return typeof window === 'undefined' ? null : window; }; - /** * Creates a no-op policy for internal use only. * Don't export this function outside this module! - * @param {TrustedTypePolicyFactory} trustedTypes The policy factory. - * @param {HTMLScriptElement} purifyHostElement The Script element used to load DOMPurify (to determine policy name suffix). - * @return {TrustedTypePolicy} The policy created (or null, if Trusted Types + * @param trustedTypes The policy factory. + * @param purifyHostElement The Script element used to load DOMPurify (to determine policy name suffix). + * @return The policy created (or null, if Trusted Types * are not supported or creating the policy failed). */ const _createTrustedTypesPolicy = function _createTrustedTypesPolicy(trustedTypes, purifyHostElement) { if (typeof trustedTypes !== 'object' || typeof trustedTypes.createPolicy !== 'function') { return null; } - // Allow the callers to control the unique policy name // by adding a data-tt-policy-suffix to the script element with the DOMPurify. // Policy creation with duplicate names throws in Trusted Types. @@ -294,17 +284,7 @@ const _createTrustedTypesPolicy = function _createTrustedTypesPolicy(trustedType function createDOMPurify() { let window = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : getGlobal(); const DOMPurify = root => createDOMPurify(root); - - /** - * Version label, exposed for easier checks - * if DOMPurify is up to date or not - */ - DOMPurify.version = '3.1.7'; - - /** - * Array of elements that DOMPurify removed during sanitation. - * Empty if nothing was removed. - */ + DOMPurify.version = '3.2.0'; DOMPurify.removed = []; if (!window || !window.document || window.document.nodeType !== NODE_TYPE.document) { // Not running in a browser, provide a factory function @@ -334,7 +314,6 @@ function createDOMPurify() { const getNextSibling = lookupGetter(ElementPrototype, 'nextSibling'); const getChildNodes = lookupGetter(ElementPrototype, 'childNodes'); const getParentNode = lookupGetter(ElementPrototype, 'parentNode'); - // As per issue #47, the web-components registry is inherited by a // new document created via createHTMLDocument. As per the spec // (http://w3c.github.io/webcomponents/spec/custom/#creating-and-passing-registries) @@ -359,7 +338,6 @@ function createDOMPurify() { importNode } = originalDocument; let hooks = {}; - /** * Expose whether this browser supports running the full DOMPurify. */ @@ -377,22 +355,18 @@ function createDOMPurify() { let { IS_ALLOWED_URI: IS_ALLOWED_URI$1 } = EXPRESSIONS; - /** * We consider the elements and attributes below to be safe. Ideally * don't add any new ones but feel free to remove unwanted ones. */ - /* allowed element names */ let ALLOWED_TAGS = null; const DEFAULT_ALLOWED_TAGS = addToSet({}, [...html$1, ...svg$1, ...svgFilters, ...mathMl$1, ...text]); - /* Allowed attribute names */ let ALLOWED_ATTR = null; const DEFAULT_ALLOWED_ATTR = addToSet({}, [...html, ...svg, ...mathMl, ...xml]); - /* - * Configure how DOMPUrify should handle custom elements and their attributes as well as customized built-in elements. + * Configure how DOMPurify should handle custom elements and their attributes as well as customized built-in elements. * @property {RegExp|Function|null} tagNameCheck one of [null, regexPattern, predicate]. Default: `null` (disallow any custom elements) * @property {RegExp|Function|null} attributeNameCheck one of [null, regexPattern, predicate]. Default: `null` (disallow any attributes not on the allow list) * @property {boolean} allowCustomizedBuiltInElements allow custom elements derived from built-ins if they pass CUSTOM_ELEMENT_HANDLING.tagNameCheck. Default: `false`. @@ -417,65 +391,49 @@ function createDOMPurify() { value: false } })); - /* Explicitly forbidden tags (overrides ALLOWED_TAGS/ADD_TAGS) */ let FORBID_TAGS = null; - /* Explicitly forbidden attributes (overrides ALLOWED_ATTR/ADD_ATTR) */ let FORBID_ATTR = null; - /* Decide if ARIA attributes are okay */ let ALLOW_ARIA_ATTR = true; - /* Decide if custom data attributes are okay */ let ALLOW_DATA_ATTR = true; - /* Decide if unknown protocols are okay */ let ALLOW_UNKNOWN_PROTOCOLS = false; - /* Decide if self-closing tags in attributes are allowed. * Usually removed due to a mXSS issue in jQuery 3.0 */ let ALLOW_SELF_CLOSE_IN_ATTR = true; - /* Output should be safe for common template engines. * This means, DOMPurify removes data attributes, mustaches and ERB */ let SAFE_FOR_TEMPLATES = false; - /* Output should be safe even for XML used within HTML and alike. * This means, DOMPurify removes comments when containing risky content. */ let SAFE_FOR_XML = true; - /* Decide if document with ... should be returned */ let WHOLE_DOCUMENT = false; - /* Track whether config is already set on this instance of DOMPurify. */ let SET_CONFIG = false; - /* Decide if all elements (e.g. style, script) must be children of * document.body. By default, browsers might move them to document.head */ let FORCE_BODY = false; - /* Decide if a DOM `HTMLBodyElement` should be returned, instead of a html * string (or a TrustedHTML object if Trusted Types are supported). * If `WHOLE_DOCUMENT` is enabled a `HTMLHtmlElement` will be returned instead */ let RETURN_DOM = false; - /* Decide if a DOM `DocumentFragment` should be returned, instead of a html * string (or a TrustedHTML object if Trusted Types are supported) */ let RETURN_DOM_FRAGMENT = false; - /* Try to return a Trusted Type object instead of a string, return a string in * case Trusted Types are not supported */ let RETURN_TRUSTED_TYPE = false; - /* Output should be free from DOM clobbering attacks? * This sanitizes markups named with colliding, clobberable built-in DOM APIs. */ let SANITIZE_DOM = true; - /* Achieve full DOM Clobbering protection by isolating the namespace of named * properties and JS variables, mitigating attacks that abuse the HTML/DOM spec rules. * @@ -491,25 +449,19 @@ function createDOMPurify() { */ let SANITIZE_NAMED_PROPS = false; const SANITIZE_NAMED_PROPS_PREFIX = 'user-content-'; - /* Keep element content when removing element? */ let KEEP_CONTENT = true; - /* If a `Node` is passed to sanitize(), then performs sanitization in-place instead * of importing it into a new Document and returning a sanitized copy */ let IN_PLACE = false; - /* Allow usage of profiles like html, svg and mathMl */ let USE_PROFILES = {}; - /* Tags to ignore content of when KEEP_CONTENT is true */ let FORBID_CONTENTS = null; const DEFAULT_FORBID_CONTENTS = addToSet({}, ['annotation-xml', 'audio', 'colgroup', 'desc', 'foreignobject', 'head', 'iframe', 'math', 'mi', 'mn', 'mo', 'ms', 'mtext', 'noembed', 'noframes', 'noscript', 'plaintext', 'script', 'style', 'svg', 'template', 'thead', 'title', 'video', 'xmp']); - /* Tags that are safe for data: URIs */ let DATA_URI_TAGS = null; const DEFAULT_DATA_URI_TAGS = addToSet({}, ['audio', 'video', 'img', 'source', 'image', 'track']); - /* Attributes safe for values like "javascript:" */ let URI_SAFE_ATTRIBUTES = null; const DEFAULT_URI_SAFE_ATTRIBUTES = addToSet({}, ['alt', 'class', 'for', 'id', 'label', 'name', 'pattern', 'placeholder', 'role', 'summary', 'title', 'value', 'style', 'xmlns']); @@ -519,32 +471,33 @@ function createDOMPurify() { /* Document namespace */ let NAMESPACE = HTML_NAMESPACE; let IS_EMPTY_INPUT = false; - /* Allowed XHTML+XML namespaces */ let ALLOWED_NAMESPACES = null; const DEFAULT_ALLOWED_NAMESPACES = addToSet({}, [MATHML_NAMESPACE, SVG_NAMESPACE, HTML_NAMESPACE], stringToString); - + let MATHML_TEXT_INTEGRATION_POINTS = addToSet({}, ['mi', 'mo', 'mn', 'ms', 'mtext']); + let HTML_INTEGRATION_POINTS = addToSet({}, ['annotation-xml']); + // Certain elements are allowed in both SVG and HTML + // namespace. We need to specify them explicitly + // so that they don't get erroneously deleted from + // HTML namespace. + const COMMON_SVG_AND_HTML_ELEMENTS = addToSet({}, ['title', 'style', 'font', 'a', 'script']); /* Parsing of strict XHTML documents */ let PARSER_MEDIA_TYPE = null; const SUPPORTED_PARSER_MEDIA_TYPES = ['application/xhtml+xml', 'text/html']; const DEFAULT_PARSER_MEDIA_TYPE = 'text/html'; let transformCaseFunc = null; - /* Keep a reference to config to pass to hooks */ let CONFIG = null; - /* Ideally, do not touch anything below this line */ /* ______________________________________________ */ - const formElement = document.createElement('form'); const isRegexOrFunction = function isRegexOrFunction(testValue) { return testValue instanceof RegExp || testValue instanceof Function; }; - /** * _parseConfig * - * @param {Object} cfg optional config literal + * @param cfg optional config literal */ // eslint-disable-next-line complexity const _parseConfig = function _parseConfig() { @@ -552,39 +505,23 @@ function createDOMPurify() { if (CONFIG && CONFIG === cfg) { return; } - /* Shield configuration object from tampering */ if (!cfg || typeof cfg !== 'object') { cfg = {}; } - /* Shield configuration object from prototype pollution */ cfg = clone(cfg); PARSER_MEDIA_TYPE = // eslint-disable-next-line unicorn/prefer-includes SUPPORTED_PARSER_MEDIA_TYPES.indexOf(cfg.PARSER_MEDIA_TYPE) === -1 ? DEFAULT_PARSER_MEDIA_TYPE : cfg.PARSER_MEDIA_TYPE; - // HTML tags and attributes are not case-sensitive, converting to lowercase. Keeping XHTML as is. transformCaseFunc = PARSER_MEDIA_TYPE === 'application/xhtml+xml' ? stringToString : stringToLowerCase; - /* Set configuration parameters */ ALLOWED_TAGS = objectHasOwnProperty(cfg, 'ALLOWED_TAGS') ? addToSet({}, cfg.ALLOWED_TAGS, transformCaseFunc) : DEFAULT_ALLOWED_TAGS; ALLOWED_ATTR = objectHasOwnProperty(cfg, 'ALLOWED_ATTR') ? addToSet({}, cfg.ALLOWED_ATTR, transformCaseFunc) : DEFAULT_ALLOWED_ATTR; ALLOWED_NAMESPACES = objectHasOwnProperty(cfg, 'ALLOWED_NAMESPACES') ? addToSet({}, cfg.ALLOWED_NAMESPACES, stringToString) : DEFAULT_ALLOWED_NAMESPACES; - URI_SAFE_ATTRIBUTES = objectHasOwnProperty(cfg, 'ADD_URI_SAFE_ATTR') ? addToSet(clone(DEFAULT_URI_SAFE_ATTRIBUTES), - // eslint-disable-line indent - cfg.ADD_URI_SAFE_ATTR, - // eslint-disable-line indent - transformCaseFunc // eslint-disable-line indent - ) // eslint-disable-line indent - : DEFAULT_URI_SAFE_ATTRIBUTES; - DATA_URI_TAGS = objectHasOwnProperty(cfg, 'ADD_DATA_URI_TAGS') ? addToSet(clone(DEFAULT_DATA_URI_TAGS), - // eslint-disable-line indent - cfg.ADD_DATA_URI_TAGS, - // eslint-disable-line indent - transformCaseFunc // eslint-disable-line indent - ) // eslint-disable-line indent - : DEFAULT_DATA_URI_TAGS; + URI_SAFE_ATTRIBUTES = objectHasOwnProperty(cfg, 'ADD_URI_SAFE_ATTR') ? addToSet(clone(DEFAULT_URI_SAFE_ATTRIBUTES), cfg.ADD_URI_SAFE_ATTR, transformCaseFunc) : DEFAULT_URI_SAFE_ATTRIBUTES; + DATA_URI_TAGS = objectHasOwnProperty(cfg, 'ADD_DATA_URI_TAGS') ? addToSet(clone(DEFAULT_DATA_URI_TAGS), cfg.ADD_DATA_URI_TAGS, transformCaseFunc) : DEFAULT_DATA_URI_TAGS; FORBID_CONTENTS = objectHasOwnProperty(cfg, 'FORBID_CONTENTS') ? addToSet({}, cfg.FORBID_CONTENTS, transformCaseFunc) : DEFAULT_FORBID_CONTENTS; FORBID_TAGS = objectHasOwnProperty(cfg, 'FORBID_TAGS') ? addToSet({}, cfg.FORBID_TAGS, transformCaseFunc) : {}; FORBID_ATTR = objectHasOwnProperty(cfg, 'FORBID_ATTR') ? addToSet({}, cfg.FORBID_ATTR, transformCaseFunc) : {}; @@ -606,6 +543,8 @@ function createDOMPurify() { IN_PLACE = cfg.IN_PLACE || false; // Default false IS_ALLOWED_URI$1 = cfg.ALLOWED_URI_REGEXP || IS_ALLOWED_URI; NAMESPACE = cfg.NAMESPACE || HTML_NAMESPACE; + MATHML_TEXT_INTEGRATION_POINTS = cfg.MATHML_TEXT_INTEGRATION_POINTS || MATHML_TEXT_INTEGRATION_POINTS; + HTML_INTEGRATION_POINTS = cfg.HTML_INTEGRATION_POINTS || HTML_INTEGRATION_POINTS; CUSTOM_ELEMENT_HANDLING = cfg.CUSTOM_ELEMENT_HANDLING || {}; if (cfg.CUSTOM_ELEMENT_HANDLING && isRegexOrFunction(cfg.CUSTOM_ELEMENT_HANDLING.tagNameCheck)) { CUSTOM_ELEMENT_HANDLING.tagNameCheck = cfg.CUSTOM_ELEMENT_HANDLING.tagNameCheck; @@ -622,7 +561,6 @@ function createDOMPurify() { if (RETURN_DOM_FRAGMENT) { RETURN_DOM = true; } - /* Parse profile info */ if (USE_PROFILES) { ALLOWED_TAGS = addToSet({}, text); @@ -647,7 +585,6 @@ function createDOMPurify() { addToSet(ALLOWED_ATTR, xml); } } - /* Merge configuration parameters */ if (cfg.ADD_TAGS) { if (ALLOWED_TAGS === DEFAULT_ALLOWED_TAGS) { @@ -670,17 +607,14 @@ function createDOMPurify() { } addToSet(FORBID_CONTENTS, cfg.FORBID_CONTENTS, transformCaseFunc); } - /* Add #text in case KEEP_CONTENT is set to true */ if (KEEP_CONTENT) { ALLOWED_TAGS['#text'] = true; } - /* Add html, head and body to ALLOWED_TAGS in case WHOLE_DOCUMENT is true */ if (WHOLE_DOCUMENT) { addToSet(ALLOWED_TAGS, ['html', 'head', 'body']); } - /* Add tbody to ALLOWED_TAGS in case tables are permitted, see #286, #365 */ if (ALLOWED_TAGS.table) { addToSet(ALLOWED_TAGS, ['tbody']); @@ -693,10 +627,8 @@ function createDOMPurify() { if (typeof cfg.TRUSTED_TYPES_POLICY.createScriptURL !== 'function') { throw typeErrorCreate('TRUSTED_TYPES_POLICY configuration option must provide a "createScriptURL" hook.'); } - // Overwrite existing TrustedTypes policy. trustedTypesPolicy = cfg.TRUSTED_TYPES_POLICY; - // Sign local variables required by `sanitize`. emptyHTML = trustedTypesPolicy.createHTML(''); } else { @@ -704,13 +636,11 @@ function createDOMPurify() { if (trustedTypesPolicy === undefined) { trustedTypesPolicy = _createTrustedTypesPolicy(trustedTypes, currentScript); } - // If creating the internal policy succeeded sign internal variables. if (trustedTypesPolicy !== null && typeof emptyHTML === 'string') { emptyHTML = trustedTypesPolicy.createHTML(''); } } - // Prevent further manipulation of configuration. // Not available in IE8, Safari 5, etc. if (freeze) { @@ -718,30 +648,19 @@ function createDOMPurify() { } CONFIG = cfg; }; - const MATHML_TEXT_INTEGRATION_POINTS = addToSet({}, ['mi', 'mo', 'mn', 'ms', 'mtext']); - const HTML_INTEGRATION_POINTS = addToSet({}, ['annotation-xml']); - - // Certain elements are allowed in both SVG and HTML - // namespace. We need to specify them explicitly - // so that they don't get erroneously deleted from - // HTML namespace. - const COMMON_SVG_AND_HTML_ELEMENTS = addToSet({}, ['title', 'style', 'font', 'a', 'script']); - /* Keep track of all possible SVG and MathML tags * so that we can perform the namespace checks * correctly. */ const ALL_SVG_TAGS = addToSet({}, [...svg$1, ...svgFilters, ...svgDisallowed]); const ALL_MATHML_TAGS = addToSet({}, [...mathMl$1, ...mathMlDisallowed]); - /** - * @param {Element} element a DOM element whose namespace is being checked - * @returns {boolean} Return false if the element has a + * @param element a DOM element whose namespace is being checked + * @returns Return false if the element has a * namespace that a spec-compliant parser would never * return. Return true otherwise. */ const _checkValidNamespace = function _checkValidNamespace(element) { let parent = getParentNode(element); - // In JSDOM, if we're inside shadow DOM, then parentNode // can be null. We just simulate parent in this case. if (!parent || !parent.tagName) { @@ -762,14 +681,12 @@ function createDOMPurify() { if (parent.namespaceURI === HTML_NAMESPACE) { return tagName === 'svg'; } - // The only way to switch from MathML to SVG is via` // svg if parent is either or MathML // text integration points. if (parent.namespaceURI === MATHML_NAMESPACE) { return tagName === 'svg' && (parentTagName === 'annotation-xml' || MATHML_TEXT_INTEGRATION_POINTS[parentTagName]); } - // We only allow elements that are defined in SVG // spec. All others are disallowed in SVG namespace. return Boolean(ALL_SVG_TAGS[tagName]); @@ -781,13 +698,11 @@ function createDOMPurify() { if (parent.namespaceURI === HTML_NAMESPACE) { return tagName === 'math'; } - // The only way to switch from SVG to MathML is via // and HTML integration points if (parent.namespaceURI === SVG_NAMESPACE) { return tagName === 'math' && HTML_INTEGRATION_POINTS[parentTagName]; } - // We only allow elements that are defined in MathML // spec. All others are disallowed in MathML namespace. return Boolean(ALL_MATHML_TAGS[tagName]); @@ -802,28 +717,24 @@ function createDOMPurify() { if (parent.namespaceURI === MATHML_NAMESPACE && !MATHML_TEXT_INTEGRATION_POINTS[parentTagName]) { return false; } - // We disallow tags that are specific for MathML // or SVG and should never appear in HTML namespace return !ALL_MATHML_TAGS[tagName] && (COMMON_SVG_AND_HTML_ELEMENTS[tagName] || !ALL_SVG_TAGS[tagName]); } - // For XHTML and XML documents that support custom namespaces if (PARSER_MEDIA_TYPE === 'application/xhtml+xml' && ALLOWED_NAMESPACES[element.namespaceURI]) { return true; } - // The code should never reach this place (this means // that the element somehow got namespace that is not // HTML, SVG, MathML or allowed via ALLOWED_NAMESPACES). // Return false just in case. return false; }; - /** * _forceRemove * - * @param {Node} node a DOM node + * @param node a DOM node */ const _forceRemove = function _forceRemove(node) { arrayPush(DOMPurify.removed, { @@ -836,46 +747,43 @@ function createDOMPurify() { remove(node); } }; - /** * _removeAttribute * - * @param {String} name an Attribute name - * @param {Node} node a DOM node + * @param name an Attribute name + * @param element a DOM node */ - const _removeAttribute = function _removeAttribute(name, node) { + const _removeAttribute = function _removeAttribute(name, element) { try { arrayPush(DOMPurify.removed, { - attribute: node.getAttributeNode(name), - from: node + attribute: element.getAttributeNode(name), + from: element }); } catch (_) { arrayPush(DOMPurify.removed, { attribute: null, - from: node + from: element }); } - node.removeAttribute(name); - + element.removeAttribute(name); // We void attribute values for unremovable "is"" attributes if (name === 'is' && !ALLOWED_ATTR[name]) { if (RETURN_DOM || RETURN_DOM_FRAGMENT) { try { - _forceRemove(node); + _forceRemove(element); } catch (_) {} } else { try { - node.setAttribute(name, ''); + element.setAttribute(name, ''); } catch (_) {} } } }; - /** * _initDocument * - * @param {String} dirty a string of dirty markup - * @return {Document} a DOM, filled with the dirty markup + * @param dirty - a string of dirty markup + * @return a DOM, filled with the dirty markup */ const _initDocument = function _initDocument(dirty) { /* Create a HTML document */ @@ -902,7 +810,6 @@ function createDOMPurify() { doc = new DOMParser().parseFromString(dirtyPayload, PARSER_MEDIA_TYPE); } catch (_) {} } - /* Use createHTMLDocument in case DOMParser is not available */ if (!doc || !doc.documentElement) { doc = implementation.createDocument(NAMESPACE, 'template', null); @@ -916,112 +823,89 @@ function createDOMPurify() { if (dirty && leadingWhitespace) { body.insertBefore(document.createTextNode(leadingWhitespace), body.childNodes[0] || null); } - /* Work on whole document or just its body */ if (NAMESPACE === HTML_NAMESPACE) { return getElementsByTagName.call(doc, WHOLE_DOCUMENT ? 'html' : 'body')[0]; } return WHOLE_DOCUMENT ? doc.documentElement : body; }; - /** * Creates a NodeIterator object that you can use to traverse filtered lists of nodes or elements in a document. * - * @param {Node} root The root element or node to start traversing on. - * @return {NodeIterator} The created NodeIterator + * @param root The root element or node to start traversing on. + * @return The created NodeIterator */ const _createNodeIterator = function _createNodeIterator(root) { return createNodeIterator.call(root.ownerDocument || root, root, // eslint-disable-next-line no-bitwise NodeFilter.SHOW_ELEMENT | NodeFilter.SHOW_COMMENT | NodeFilter.SHOW_TEXT | NodeFilter.SHOW_PROCESSING_INSTRUCTION | NodeFilter.SHOW_CDATA_SECTION, null); }; - /** * _isClobbered * - * @param {Node} elm element to check for clobbering attacks - * @return {Boolean} true if clobbered, false if safe + * @param element element to check for clobbering attacks + * @return true if clobbered, false if safe */ - const _isClobbered = function _isClobbered(elm) { - return elm instanceof HTMLFormElement && (typeof elm.nodeName !== 'string' || typeof elm.textContent !== 'string' || typeof elm.removeChild !== 'function' || !(elm.attributes instanceof NamedNodeMap) || typeof elm.removeAttribute !== 'function' || typeof elm.setAttribute !== 'function' || typeof elm.namespaceURI !== 'string' || typeof elm.insertBefore !== 'function' || typeof elm.hasChildNodes !== 'function'); + const _isClobbered = function _isClobbered(element) { + return element instanceof HTMLFormElement && (typeof element.nodeName !== 'string' || typeof element.textContent !== 'string' || typeof element.removeChild !== 'function' || !(element.attributes instanceof NamedNodeMap) || typeof element.removeAttribute !== 'function' || typeof element.setAttribute !== 'function' || typeof element.namespaceURI !== 'string' || typeof element.insertBefore !== 'function' || typeof element.hasChildNodes !== 'function'); }; - /** * Checks whether the given object is a DOM node. * - * @param {Node} object object to check whether it's a DOM node - * @return {Boolean} true is object is a DOM node + * @param value object to check whether it's a DOM node + * @return true is object is a DOM node */ - const _isNode = function _isNode(object) { - return typeof Node === 'function' && object instanceof Node; + const _isNode = function _isNode(value) { + return typeof Node === 'function' && value instanceof Node; }; - - /** - * _executeHook - * Execute user configurable hooks - * - * @param {String} entryPoint Name of the hook's entry point - * @param {Node} currentNode node to work on with the hook - * @param {Object} data additional hook parameters - */ - const _executeHook = function _executeHook(entryPoint, currentNode, data) { + function _executeHook(entryPoint, currentNode, data) { if (!hooks[entryPoint]) { return; } arrayForEach(hooks[entryPoint], hook => { hook.call(DOMPurify, currentNode, data, CONFIG); }); - }; - + } /** * _sanitizeElements * * @protect nodeName * @protect textContent * @protect removeChild - * - * @param {Node} currentNode to check for permission to exist - * @return {Boolean} true if node was killed, false if left alive + * @param currentNode to check for permission to exist + * @return true if node was killed, false if left alive */ const _sanitizeElements = function _sanitizeElements(currentNode) { let content = null; - /* Execute a hook if present */ _executeHook('beforeSanitizeElements', currentNode, null); - /* Check if element is clobbered or can clobber */ if (_isClobbered(currentNode)) { _forceRemove(currentNode); return true; } - /* Now let's check the element's type and name */ const tagName = transformCaseFunc(currentNode.nodeName); - /* Execute a hook if present */ _executeHook('uponSanitizeElement', currentNode, { tagName, allowedTags: ALLOWED_TAGS }); - /* Detect mXSS attempts abusing namespace confusion */ if (currentNode.hasChildNodes() && !_isNode(currentNode.firstElementChild) && regExpTest(/<[/\w]/g, currentNode.innerHTML) && regExpTest(/<[/\w]/g, currentNode.textContent)) { _forceRemove(currentNode); return true; } - /* Remove any occurrence of processing instructions */ if (currentNode.nodeType === NODE_TYPE.progressingInstruction) { _forceRemove(currentNode); return true; } - /* Remove any kind of possibly harmful comments */ if (SAFE_FOR_XML && currentNode.nodeType === NODE_TYPE.comment && regExpTest(/<[/\w]/g, currentNode.data)) { _forceRemove(currentNode); return true; } - /* Remove element if anything forbids its presence */ if (!ALLOWED_TAGS[tagName] || FORBID_TAGS[tagName]) { /* Check if we have a custom element to handle */ @@ -1033,7 +917,6 @@ function createDOMPurify() { return false; } } - /* Keep content except for bad-listed elements */ if (KEEP_CONTENT && !FORBID_CONTENTS[tagName]) { const parentNode = getParentNode(currentNode) || currentNode.parentNode; @@ -1050,19 +933,16 @@ function createDOMPurify() { _forceRemove(currentNode); return true; } - /* Check whether element has a valid namespace */ if (currentNode instanceof Element && !_checkValidNamespace(currentNode)) { _forceRemove(currentNode); return true; } - /* Make sure that older browsers don't get fallback-tag mXSS */ if ((tagName === 'noscript' || tagName === 'noembed' || tagName === 'noframes') && regExpTest(/<\/no(script|embed|frames)/i, currentNode.innerHTML)) { _forceRemove(currentNode); return true; } - /* Sanitize element content to be template-safe */ if (SAFE_FOR_TEMPLATES && currentNode.nodeType === NODE_TYPE.text) { /* Get the element's text content */ @@ -1077,19 +957,17 @@ function createDOMPurify() { currentNode.textContent = content; } } - /* Execute a hook if present */ _executeHook('afterSanitizeElements', currentNode, null); return false; }; - /** * _isValidAttribute * - * @param {string} lcTag Lowercase tag name of containing element. - * @param {string} lcName Lowercase attribute name. - * @param {string} value Attribute value. - * @return {Boolean} Returns true if `value` is valid, otherwise false. + * @param lcTag Lowercase tag name of containing element. + * @param lcName Lowercase attribute name. + * @param value Attribute value. + * @return Returns true if `value` is valid, otherwise false. */ // eslint-disable-next-line complexity const _isValidAttribute = function _isValidAttribute(lcTag, lcName, value) { @@ -1097,7 +975,6 @@ function createDOMPurify() { if (SANITIZE_DOM && (lcName === 'id' || lcName === 'name') && (value in document || value in formElement)) { return false; } - /* Allow valid data-* attributes: At least one character after "-" (https://html.spec.whatwg.org/multipage/dom.html#embedding-custom-non-visible-data-with-the-data-*-attributes) XML-compatible (https://html.spec.whatwg.org/multipage/infrastructure.html#xml-compatible and http://www.w3.org/TR/xml/#d0e804) @@ -1119,19 +996,17 @@ function createDOMPurify() { } else ; return true; }; - /** * _isBasicCustomElement * checks if at least one dash is included in tagName, and it's not the first char * for more sophisticated checking see https://github.com/sindresorhus/validate-element-name * - * @param {string} tagName name of the tag of the node to sanitize - * @returns {boolean} Returns true if the tag name meets the basic criteria for a custom element, otherwise false. + * @param tagName name of the tag of the node to sanitize + * @returns Returns true if the tag name meets the basic criteria for a custom element, otherwise false. */ const _isBasicCustomElement = function _isBasicCustomElement(tagName) { return tagName !== 'annotation-xml' && stringMatch(tagName, CUSTOM_ELEMENT); }; - /** * _sanitizeAttributes * @@ -1140,7 +1015,7 @@ function createDOMPurify() { * @protect removeAttribute * @protect setAttribute * - * @param {Node} currentNode to sanitize + * @param currentNode to sanitize */ const _sanitizeAttributes = function _sanitizeAttributes(currentNode) { /* Execute a hook if present */ @@ -1148,7 +1023,6 @@ function createDOMPurify() { const { attributes } = currentNode; - /* Check if we have attributes; if not we might have a text node */ if (!attributes) { return; @@ -1157,10 +1031,10 @@ function createDOMPurify() { attrName: '', attrValue: '', keepAttr: true, - allowedAttributes: ALLOWED_ATTR + allowedAttributes: ALLOWED_ATTR, + forceKeepAttr: undefined }; let l = attributes.length; - /* Go backwards over all attributes; safely remove bad ones */ while (l--) { const attr = attributes[l]; @@ -1171,7 +1045,6 @@ function createDOMPurify() { } = attr; const lcName = transformCaseFunc(name); let value = name === 'value' ? attrValue : stringTrim(attrValue); - /* Execute a hook if present */ hookEvent.attrName = lcName; hookEvent.attrValue = value; @@ -1179,56 +1052,46 @@ function createDOMPurify() { hookEvent.forceKeepAttr = undefined; // Allows developers to see this is a property they can set _executeHook('uponSanitizeAttribute', currentNode, hookEvent); value = hookEvent.attrValue; - + /* Full DOM Clobbering protection via namespace isolation, + * Prefix id and name attributes with `user-content-` + */ + if (SANITIZE_NAMED_PROPS && (lcName === 'id' || lcName === 'name')) { + // Remove the attribute with this value + _removeAttribute(name, currentNode); + // Prefix the value and later re-create the attribute with the sanitized value + value = SANITIZE_NAMED_PROPS_PREFIX + value; + } + /* Work around a security issue with comments inside attributes */ + if (SAFE_FOR_XML && regExpTest(/((--!?|])>)|<\/(style|title)/i, value)) { + _removeAttribute(name, currentNode); + continue; + } /* Did the hooks approve of the attribute? */ if (hookEvent.forceKeepAttr) { continue; } - /* Remove attribute */ _removeAttribute(name, currentNode); - /* Did the hooks approve of the attribute? */ if (!hookEvent.keepAttr) { continue; } - /* Work around a security issue in jQuery 3.0 */ if (!ALLOW_SELF_CLOSE_IN_ATTR && regExpTest(/\/>/i, value)) { _removeAttribute(name, currentNode); continue; } - /* Sanitize attribute content to be template-safe */ if (SAFE_FOR_TEMPLATES) { arrayForEach([MUSTACHE_EXPR, ERB_EXPR, TMPLIT_EXPR], expr => { value = stringReplace(value, expr, ' '); }); } - /* Is `value` valid for this attribute? */ const lcTag = transformCaseFunc(currentNode.nodeName); if (!_isValidAttribute(lcTag, lcName, value)) { continue; } - - /* Full DOM Clobbering protection via namespace isolation, - * Prefix id and name attributes with `user-content-` - */ - if (SANITIZE_NAMED_PROPS && (lcName === 'id' || lcName === 'name')) { - // Remove the attribute with this value - _removeAttribute(name, currentNode); - - // Prefix the value and later re-create the attribute with the sanitized value - value = SANITIZE_NAMED_PROPS_PREFIX + value; - } - - /* Work around a security issue with comments inside attributes */ - if (SAFE_FOR_XML && regExpTest(/((--!?|])>)|<\/(style|title)/i, value)) { - _removeAttribute(name, currentNode); - continue; - } - /* Handle attributes that require Trusted Types */ if (trustedTypesPolicy && typeof trustedTypes === 'object' && typeof trustedTypes.getAttributeType === 'function') { if (namespaceURI) ; else { @@ -1246,7 +1109,6 @@ function createDOMPurify() { } } } - /* Handle invalid data-* attribute set by try-catching it */ try { if (namespaceURI) { @@ -1262,51 +1124,36 @@ function createDOMPurify() { } } catch (_) {} } - /* Execute a hook if present */ _executeHook('afterSanitizeAttributes', currentNode, null); }; - /** * _sanitizeShadowDOM * - * @param {DocumentFragment} fragment to iterate over recursively + * @param fragment to iterate over recursively */ const _sanitizeShadowDOM = function _sanitizeShadowDOM(fragment) { let shadowNode = null; const shadowIterator = _createNodeIterator(fragment); - /* Execute a hook if present */ _executeHook('beforeSanitizeShadowDOM', fragment, null); while (shadowNode = shadowIterator.nextNode()) { /* Execute a hook if present */ _executeHook('uponSanitizeShadowNode', shadowNode, null); - /* Sanitize tags and elements */ if (_sanitizeElements(shadowNode)) { continue; } - /* Deep shadow DOM detected */ if (shadowNode.content instanceof DocumentFragment) { _sanitizeShadowDOM(shadowNode.content); } - /* Check attributes, sanitize if necessary */ _sanitizeAttributes(shadowNode); } - /* Execute a hook if present */ _executeHook('afterSanitizeShadowDOM', fragment, null); }; - - /** - * Sanitize - * Public method providing core sanitation functionality - * - * @param {String|Node} dirty string or DOM node - * @param {Object} cfg object - */ // eslint-disable-next-line complexity DOMPurify.sanitize = function (dirty) { let cfg = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {}; @@ -1321,7 +1168,6 @@ function createDOMPurify() { if (IS_EMPTY_INPUT) { dirty = ''; } - /* Stringify, in case dirty is an object */ if (typeof dirty !== 'string' && !_isNode(dirty)) { if (typeof dirty.toString === 'function') { @@ -1333,20 +1179,16 @@ function createDOMPurify() { throw typeErrorCreate('toString is not a function'); } } - /* Return dirty HTML if DOMPurify cannot run */ if (!DOMPurify.isSupported) { return dirty; } - /* Assign config vars */ if (!SET_CONFIG) { _parseConfig(cfg); } - /* Clean up removed elements */ DOMPurify.removed = []; - /* Check if dirty is correctly typed for IN_PLACE */ if (typeof dirty === 'string') { IN_PLACE = false; @@ -1380,45 +1222,36 @@ function createDOMPurify() { dirty.indexOf('<') === -1) { return trustedTypesPolicy && RETURN_TRUSTED_TYPE ? trustedTypesPolicy.createHTML(dirty) : dirty; } - /* Initialize the document to work on */ body = _initDocument(dirty); - /* Check we have a DOM node from the data */ if (!body) { return RETURN_DOM ? null : RETURN_TRUSTED_TYPE ? emptyHTML : ''; } } - /* Remove first element node (ours) if FORCE_BODY is set */ if (body && FORCE_BODY) { _forceRemove(body.firstChild); } - /* Get node iterator */ const nodeIterator = _createNodeIterator(IN_PLACE ? dirty : body); - /* Now start iterating over the created document */ while (currentNode = nodeIterator.nextNode()) { /* Sanitize tags and elements */ if (_sanitizeElements(currentNode)) { continue; } - /* Shadow DOM detected, sanitize it */ if (currentNode.content instanceof DocumentFragment) { _sanitizeShadowDOM(currentNode.content); } - /* Check attributes, sanitize if necessary */ _sanitizeAttributes(currentNode); } - /* If we sanitized `dirty` in-place, return it. */ if (IN_PLACE) { return dirty; } - /* Return sanitized string or DOM */ if (RETURN_DOM) { if (RETURN_DOM_FRAGMENT) { @@ -1443,12 +1276,10 @@ function createDOMPurify() { return returnNode; } let serializedHTML = WHOLE_DOCUMENT ? body.outerHTML : body.innerHTML; - /* Serialize doctype if allowed */ if (WHOLE_DOCUMENT && ALLOWED_TAGS['!doctype'] && body.ownerDocument && body.ownerDocument.doctype && body.ownerDocument.doctype.name && regExpTest(DOCTYPE_NAME, body.ownerDocument.doctype.name)) { serializedHTML = '\n' + serializedHTML; } - /* Sanitize final string template-safe */ if (SAFE_FOR_TEMPLATES) { arrayForEach([MUSTACHE_EXPR, ERB_EXPR, TMPLIT_EXPR], expr => { @@ -1457,39 +1288,15 @@ function createDOMPurify() { } return trustedTypesPolicy && RETURN_TRUSTED_TYPE ? trustedTypesPolicy.createHTML(serializedHTML) : serializedHTML; }; - - /** - * Public method to set the configuration once - * setConfig - * - * @param {Object} cfg configuration object - */ DOMPurify.setConfig = function () { let cfg = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {}; _parseConfig(cfg); SET_CONFIG = true; }; - - /** - * Public method to remove the configuration - * clearConfig - * - */ DOMPurify.clearConfig = function () { CONFIG = null; SET_CONFIG = false; }; - - /** - * Public method to check if an attribute value is valid. - * Uses last set config, if any. Otherwise, uses config defaults. - * isValidAttribute - * - * @param {String} tag Tag name of containing element. - * @param {String} attr Attribute name. - * @param {String} value Attribute value. - * @return {Boolean} Returns true if `value` is valid. Otherwise, returns false. - */ DOMPurify.isValidAttribute = function (tag, attr, value) { /* Initialize shared config vars if necessary. */ if (!CONFIG) { @@ -1499,14 +1306,6 @@ function createDOMPurify() { const lcName = transformCaseFunc(attr); return _isValidAttribute(lcTag, lcName, value); }; - - /** - * AddHook - * Public method to add DOMPurify hooks - * - * @param {String} entryPoint entry point for the hook to add - * @param {Function} hookFunction function to execute - */ DOMPurify.addHook = function (entryPoint, hookFunction) { if (typeof hookFunction !== 'function') { return; @@ -1514,37 +1313,16 @@ function createDOMPurify() { hooks[entryPoint] = hooks[entryPoint] || []; arrayPush(hooks[entryPoint], hookFunction); }; - - /** - * RemoveHook - * Public method to remove a DOMPurify hook at a given entryPoint - * (pops it from the stack of hooks if more are present) - * - * @param {String} entryPoint entry point for the hook to remove - * @return {Function} removed(popped) hook - */ DOMPurify.removeHook = function (entryPoint) { if (hooks[entryPoint]) { return arrayPop(hooks[entryPoint]); } }; - - /** - * RemoveHooks - * Public method to remove all DOMPurify hooks at a given entryPoint - * - * @param {String} entryPoint entry point for the hooks to remove - */ DOMPurify.removeHooks = function (entryPoint) { if (hooks[entryPoint]) { hooks[entryPoint] = []; } }; - - /** - * RemoveAllHooks - * Public method to remove all DOMPurify hooks - */ DOMPurify.removeAllHooks = function () { hooks = {}; }; diff --git a/dist/purify.cjs.js.map b/dist/purify.cjs.js.map index 534e29b15..95abe2c90 100644 --- a/dist/purify.cjs.js.map +++ b/dist/purify.cjs.js.map @@ -1 +1 @@ -{"version":3,"file":"purify.cjs.js","sources":["../src/utils.js","../src/tags.js","../src/attrs.js","../src/regexp.js","../src/purify.js"],"sourcesContent":["const {\n entries,\n setPrototypeOf,\n isFrozen,\n getPrototypeOf,\n getOwnPropertyDescriptor,\n} = Object;\n\nlet { freeze, seal, create } = Object; // eslint-disable-line import/no-mutable-exports\nlet { apply, construct } = typeof Reflect !== 'undefined' && Reflect;\n\nif (!freeze) {\n freeze = function (x) {\n return x;\n };\n}\n\nif (!seal) {\n seal = function (x) {\n return x;\n };\n}\n\nif (!apply) {\n apply = function (fun, thisValue, args) {\n return fun.apply(thisValue, args);\n };\n}\n\nif (!construct) {\n construct = function (Func, args) {\n return new Func(...args);\n };\n}\n\nconst arrayForEach = unapply(Array.prototype.forEach);\nconst arrayIndexOf = unapply(Array.prototype.indexOf);\nconst arrayPop = unapply(Array.prototype.pop);\nconst arrayPush = unapply(Array.prototype.push);\nconst arraySlice = unapply(Array.prototype.slice);\n\nconst stringToLowerCase = unapply(String.prototype.toLowerCase);\nconst stringToString = unapply(String.prototype.toString);\nconst stringMatch = unapply(String.prototype.match);\nconst stringReplace = unapply(String.prototype.replace);\nconst stringIndexOf = unapply(String.prototype.indexOf);\nconst stringTrim = unapply(String.prototype.trim);\n\nconst objectHasOwnProperty = unapply(Object.prototype.hasOwnProperty);\n\nconst regExpTest = unapply(RegExp.prototype.test);\n\nconst typeErrorCreate = unconstruct(TypeError);\n\n/**\n * Creates a new function that calls the given function with a specified thisArg and arguments.\n *\n * @param {Function} func - The function to be wrapped and called.\n * @returns {Function} A new function that calls the given function with a specified thisArg and arguments.\n */\nfunction unapply(func) {\n return (thisArg, ...args) => apply(func, thisArg, args);\n}\n\n/**\n * Creates a new function that constructs an instance of the given constructor function with the provided arguments.\n *\n * @param {Function} func - The constructor function to be wrapped and called.\n * @returns {Function} A new function that constructs an instance of the given constructor function with the provided arguments.\n */\nfunction unconstruct(func) {\n return (...args) => construct(func, args);\n}\n\n/**\n * Add properties to a lookup table\n *\n * @param {Object} set - The set to which elements will be added.\n * @param {Array} array - The array containing elements to be added to the set.\n * @param {Function} transformCaseFunc - An optional function to transform the case of each element before adding to the set.\n * @returns {Object} The modified set with added elements.\n */\nfunction addToSet(set, array, transformCaseFunc = stringToLowerCase) {\n if (setPrototypeOf) {\n // Make 'in' and truthy checks like Boolean(set.constructor)\n // independent of any properties defined on Object.prototype.\n // Prevent prototype setters from intercepting set as a this value.\n setPrototypeOf(set, null);\n }\n\n let l = array.length;\n while (l--) {\n let element = array[l];\n if (typeof element === 'string') {\n const lcElement = transformCaseFunc(element);\n if (lcElement !== element) {\n // Config presets (e.g. tags.js, attrs.js) are immutable.\n if (!isFrozen(array)) {\n array[l] = lcElement;\n }\n\n element = lcElement;\n }\n }\n\n set[element] = true;\n }\n\n return set;\n}\n\n/**\n * Clean up an array to harden against CSPP\n *\n * @param {Array} array - The array to be cleaned.\n * @returns {Array} The cleaned version of the array\n */\nfunction cleanArray(array) {\n for (let index = 0; index < array.length; index++) {\n const isPropertyExist = objectHasOwnProperty(array, index);\n\n if (!isPropertyExist) {\n array[index] = null;\n }\n }\n\n return array;\n}\n\n/**\n * Shallow clone an object\n *\n * @param {Object} object - The object to be cloned.\n * @returns {Object} A new object that copies the original.\n */\nfunction clone(object) {\n const newObject = create(null);\n\n for (const [property, value] of entries(object)) {\n const isPropertyExist = objectHasOwnProperty(object, property);\n\n if (isPropertyExist) {\n if (Array.isArray(value)) {\n newObject[property] = cleanArray(value);\n } else if (\n value &&\n typeof value === 'object' &&\n value.constructor === Object\n ) {\n newObject[property] = clone(value);\n } else {\n newObject[property] = value;\n }\n }\n }\n\n return newObject;\n}\n\n/**\n * This method automatically checks if the prop is function or getter and behaves accordingly.\n *\n * @param {Object} object - The object to look up the getter function in its prototype chain.\n * @param {String} prop - The property name for which to find the getter function.\n * @returns {Function} The getter function found in the prototype chain or a fallback function.\n */\nfunction lookupGetter(object, prop) {\n while (object !== null) {\n const desc = getOwnPropertyDescriptor(object, prop);\n\n if (desc) {\n if (desc.get) {\n return unapply(desc.get);\n }\n\n if (typeof desc.value === 'function') {\n return unapply(desc.value);\n }\n }\n\n object = getPrototypeOf(object);\n }\n\n function fallbackValue() {\n return null;\n }\n\n return fallbackValue;\n}\n\nexport {\n // Array\n arrayForEach,\n arrayIndexOf,\n arrayPop,\n arrayPush,\n arraySlice,\n // Object\n entries,\n freeze,\n getPrototypeOf,\n getOwnPropertyDescriptor,\n isFrozen,\n setPrototypeOf,\n seal,\n clone,\n create,\n objectHasOwnProperty,\n // RegExp\n regExpTest,\n // String\n stringIndexOf,\n stringMatch,\n stringReplace,\n stringToLowerCase,\n stringToString,\n stringTrim,\n // Errors\n typeErrorCreate,\n // Other\n lookupGetter,\n addToSet,\n // Reflect\n unapply,\n unconstruct,\n};\n","import { freeze } from './utils.js';\n\nexport const html = freeze([\n 'a',\n 'abbr',\n 'acronym',\n 'address',\n 'area',\n 'article',\n 'aside',\n 'audio',\n 'b',\n 'bdi',\n 'bdo',\n 'big',\n 'blink',\n 'blockquote',\n 'body',\n 'br',\n 'button',\n 'canvas',\n 'caption',\n 'center',\n 'cite',\n 'code',\n 'col',\n 'colgroup',\n 'content',\n 'data',\n 'datalist',\n 'dd',\n 'decorator',\n 'del',\n 'details',\n 'dfn',\n 'dialog',\n 'dir',\n 'div',\n 'dl',\n 'dt',\n 'element',\n 'em',\n 'fieldset',\n 'figcaption',\n 'figure',\n 'font',\n 'footer',\n 'form',\n 'h1',\n 'h2',\n 'h3',\n 'h4',\n 'h5',\n 'h6',\n 'head',\n 'header',\n 'hgroup',\n 'hr',\n 'html',\n 'i',\n 'img',\n 'input',\n 'ins',\n 'kbd',\n 'label',\n 'legend',\n 'li',\n 'main',\n 'map',\n 'mark',\n 'marquee',\n 'menu',\n 'menuitem',\n 'meter',\n 'nav',\n 'nobr',\n 'ol',\n 'optgroup',\n 'option',\n 'output',\n 'p',\n 'picture',\n 'pre',\n 'progress',\n 'q',\n 'rp',\n 'rt',\n 'ruby',\n 's',\n 'samp',\n 'section',\n 'select',\n 'shadow',\n 'small',\n 'source',\n 'spacer',\n 'span',\n 'strike',\n 'strong',\n 'style',\n 'sub',\n 'summary',\n 'sup',\n 'table',\n 'tbody',\n 'td',\n 'template',\n 'textarea',\n 'tfoot',\n 'th',\n 'thead',\n 'time',\n 'tr',\n 'track',\n 'tt',\n 'u',\n 'ul',\n 'var',\n 'video',\n 'wbr',\n]);\n\n// SVG\nexport const svg = freeze([\n 'svg',\n 'a',\n 'altglyph',\n 'altglyphdef',\n 'altglyphitem',\n 'animatecolor',\n 'animatemotion',\n 'animatetransform',\n 'circle',\n 'clippath',\n 'defs',\n 'desc',\n 'ellipse',\n 'filter',\n 'font',\n 'g',\n 'glyph',\n 'glyphref',\n 'hkern',\n 'image',\n 'line',\n 'lineargradient',\n 'marker',\n 'mask',\n 'metadata',\n 'mpath',\n 'path',\n 'pattern',\n 'polygon',\n 'polyline',\n 'radialgradient',\n 'rect',\n 'stop',\n 'style',\n 'switch',\n 'symbol',\n 'text',\n 'textpath',\n 'title',\n 'tref',\n 'tspan',\n 'view',\n 'vkern',\n]);\n\nexport const svgFilters = freeze([\n 'feBlend',\n 'feColorMatrix',\n 'feComponentTransfer',\n 'feComposite',\n 'feConvolveMatrix',\n 'feDiffuseLighting',\n 'feDisplacementMap',\n 'feDistantLight',\n 'feDropShadow',\n 'feFlood',\n 'feFuncA',\n 'feFuncB',\n 'feFuncG',\n 'feFuncR',\n 'feGaussianBlur',\n 'feImage',\n 'feMerge',\n 'feMergeNode',\n 'feMorphology',\n 'feOffset',\n 'fePointLight',\n 'feSpecularLighting',\n 'feSpotLight',\n 'feTile',\n 'feTurbulence',\n]);\n\n// List of SVG elements that are disallowed by default.\n// We still need to know them so that we can do namespace\n// checks properly in case one wants to add them to\n// allow-list.\nexport const svgDisallowed = freeze([\n 'animate',\n 'color-profile',\n 'cursor',\n 'discard',\n 'font-face',\n 'font-face-format',\n 'font-face-name',\n 'font-face-src',\n 'font-face-uri',\n 'foreignobject',\n 'hatch',\n 'hatchpath',\n 'mesh',\n 'meshgradient',\n 'meshpatch',\n 'meshrow',\n 'missing-glyph',\n 'script',\n 'set',\n 'solidcolor',\n 'unknown',\n 'use',\n]);\n\nexport const mathMl = freeze([\n 'math',\n 'menclose',\n 'merror',\n 'mfenced',\n 'mfrac',\n 'mglyph',\n 'mi',\n 'mlabeledtr',\n 'mmultiscripts',\n 'mn',\n 'mo',\n 'mover',\n 'mpadded',\n 'mphantom',\n 'mroot',\n 'mrow',\n 'ms',\n 'mspace',\n 'msqrt',\n 'mstyle',\n 'msub',\n 'msup',\n 'msubsup',\n 'mtable',\n 'mtd',\n 'mtext',\n 'mtr',\n 'munder',\n 'munderover',\n 'mprescripts',\n]);\n\n// Similarly to SVG, we want to know all MathML elements,\n// even those that we disallow by default.\nexport const mathMlDisallowed = freeze([\n 'maction',\n 'maligngroup',\n 'malignmark',\n 'mlongdiv',\n 'mscarries',\n 'mscarry',\n 'msgroup',\n 'mstack',\n 'msline',\n 'msrow',\n 'semantics',\n 'annotation',\n 'annotation-xml',\n 'mprescripts',\n 'none',\n]);\n\nexport const text = freeze(['#text']);\n","import { freeze } from './utils.js';\n\nexport const html = freeze([\n 'accept',\n 'action',\n 'align',\n 'alt',\n 'autocapitalize',\n 'autocomplete',\n 'autopictureinpicture',\n 'autoplay',\n 'background',\n 'bgcolor',\n 'border',\n 'capture',\n 'cellpadding',\n 'cellspacing',\n 'checked',\n 'cite',\n 'class',\n 'clear',\n 'color',\n 'cols',\n 'colspan',\n 'controls',\n 'controlslist',\n 'coords',\n 'crossorigin',\n 'datetime',\n 'decoding',\n 'default',\n 'dir',\n 'disabled',\n 'disablepictureinpicture',\n 'disableremoteplayback',\n 'download',\n 'draggable',\n 'enctype',\n 'enterkeyhint',\n 'face',\n 'for',\n 'headers',\n 'height',\n 'hidden',\n 'high',\n 'href',\n 'hreflang',\n 'id',\n 'inputmode',\n 'integrity',\n 'ismap',\n 'kind',\n 'label',\n 'lang',\n 'list',\n 'loading',\n 'loop',\n 'low',\n 'max',\n 'maxlength',\n 'media',\n 'method',\n 'min',\n 'minlength',\n 'multiple',\n 'muted',\n 'name',\n 'nonce',\n 'noshade',\n 'novalidate',\n 'nowrap',\n 'open',\n 'optimum',\n 'pattern',\n 'placeholder',\n 'playsinline',\n 'popover',\n 'popovertarget',\n 'popovertargetaction',\n 'poster',\n 'preload',\n 'pubdate',\n 'radiogroup',\n 'readonly',\n 'rel',\n 'required',\n 'rev',\n 'reversed',\n 'role',\n 'rows',\n 'rowspan',\n 'spellcheck',\n 'scope',\n 'selected',\n 'shape',\n 'size',\n 'sizes',\n 'span',\n 'srclang',\n 'start',\n 'src',\n 'srcset',\n 'step',\n 'style',\n 'summary',\n 'tabindex',\n 'title',\n 'translate',\n 'type',\n 'usemap',\n 'valign',\n 'value',\n 'width',\n 'wrap',\n 'xmlns',\n 'slot',\n]);\n\nexport const svg = freeze([\n 'accent-height',\n 'accumulate',\n 'additive',\n 'alignment-baseline',\n 'amplitude',\n 'ascent',\n 'attributename',\n 'attributetype',\n 'azimuth',\n 'basefrequency',\n 'baseline-shift',\n 'begin',\n 'bias',\n 'by',\n 'class',\n 'clip',\n 'clippathunits',\n 'clip-path',\n 'clip-rule',\n 'color',\n 'color-interpolation',\n 'color-interpolation-filters',\n 'color-profile',\n 'color-rendering',\n 'cx',\n 'cy',\n 'd',\n 'dx',\n 'dy',\n 'diffuseconstant',\n 'direction',\n 'display',\n 'divisor',\n 'dur',\n 'edgemode',\n 'elevation',\n 'end',\n 'exponent',\n 'fill',\n 'fill-opacity',\n 'fill-rule',\n 'filter',\n 'filterunits',\n 'flood-color',\n 'flood-opacity',\n 'font-family',\n 'font-size',\n 'font-size-adjust',\n 'font-stretch',\n 'font-style',\n 'font-variant',\n 'font-weight',\n 'fx',\n 'fy',\n 'g1',\n 'g2',\n 'glyph-name',\n 'glyphref',\n 'gradientunits',\n 'gradienttransform',\n 'height',\n 'href',\n 'id',\n 'image-rendering',\n 'in',\n 'in2',\n 'intercept',\n 'k',\n 'k1',\n 'k2',\n 'k3',\n 'k4',\n 'kerning',\n 'keypoints',\n 'keysplines',\n 'keytimes',\n 'lang',\n 'lengthadjust',\n 'letter-spacing',\n 'kernelmatrix',\n 'kernelunitlength',\n 'lighting-color',\n 'local',\n 'marker-end',\n 'marker-mid',\n 'marker-start',\n 'markerheight',\n 'markerunits',\n 'markerwidth',\n 'maskcontentunits',\n 'maskunits',\n 'max',\n 'mask',\n 'media',\n 'method',\n 'mode',\n 'min',\n 'name',\n 'numoctaves',\n 'offset',\n 'operator',\n 'opacity',\n 'order',\n 'orient',\n 'orientation',\n 'origin',\n 'overflow',\n 'paint-order',\n 'path',\n 'pathlength',\n 'patterncontentunits',\n 'patterntransform',\n 'patternunits',\n 'points',\n 'preservealpha',\n 'preserveaspectratio',\n 'primitiveunits',\n 'r',\n 'rx',\n 'ry',\n 'radius',\n 'refx',\n 'refy',\n 'repeatcount',\n 'repeatdur',\n 'restart',\n 'result',\n 'rotate',\n 'scale',\n 'seed',\n 'shape-rendering',\n 'slope',\n 'specularconstant',\n 'specularexponent',\n 'spreadmethod',\n 'startoffset',\n 'stddeviation',\n 'stitchtiles',\n 'stop-color',\n 'stop-opacity',\n 'stroke-dasharray',\n 'stroke-dashoffset',\n 'stroke-linecap',\n 'stroke-linejoin',\n 'stroke-miterlimit',\n 'stroke-opacity',\n 'stroke',\n 'stroke-width',\n 'style',\n 'surfacescale',\n 'systemlanguage',\n 'tabindex',\n 'tablevalues',\n 'targetx',\n 'targety',\n 'transform',\n 'transform-origin',\n 'text-anchor',\n 'text-decoration',\n 'text-rendering',\n 'textlength',\n 'type',\n 'u1',\n 'u2',\n 'unicode',\n 'values',\n 'viewbox',\n 'visibility',\n 'version',\n 'vert-adv-y',\n 'vert-origin-x',\n 'vert-origin-y',\n 'width',\n 'word-spacing',\n 'wrap',\n 'writing-mode',\n 'xchannelselector',\n 'ychannelselector',\n 'x',\n 'x1',\n 'x2',\n 'xmlns',\n 'y',\n 'y1',\n 'y2',\n 'z',\n 'zoomandpan',\n]);\n\nexport const mathMl = freeze([\n 'accent',\n 'accentunder',\n 'align',\n 'bevelled',\n 'close',\n 'columnsalign',\n 'columnlines',\n 'columnspan',\n 'denomalign',\n 'depth',\n 'dir',\n 'display',\n 'displaystyle',\n 'encoding',\n 'fence',\n 'frame',\n 'height',\n 'href',\n 'id',\n 'largeop',\n 'length',\n 'linethickness',\n 'lspace',\n 'lquote',\n 'mathbackground',\n 'mathcolor',\n 'mathsize',\n 'mathvariant',\n 'maxsize',\n 'minsize',\n 'movablelimits',\n 'notation',\n 'numalign',\n 'open',\n 'rowalign',\n 'rowlines',\n 'rowspacing',\n 'rowspan',\n 'rspace',\n 'rquote',\n 'scriptlevel',\n 'scriptminsize',\n 'scriptsizemultiplier',\n 'selection',\n 'separator',\n 'separators',\n 'stretchy',\n 'subscriptshift',\n 'supscriptshift',\n 'symmetric',\n 'voffset',\n 'width',\n 'xmlns',\n]);\n\nexport const xml = freeze([\n 'xlink:href',\n 'xml:id',\n 'xlink:title',\n 'xml:space',\n 'xmlns:xlink',\n]);\n","import { seal } from './utils.js';\n\n// eslint-disable-next-line unicorn/better-regex\nexport const MUSTACHE_EXPR = seal(/\\{\\{[\\w\\W]*|[\\w\\W]*\\}\\}/gm); // Specify template detection regex for SAFE_FOR_TEMPLATES mode\nexport const ERB_EXPR = seal(/<%[\\w\\W]*|[\\w\\W]*%>/gm);\nexport const TMPLIT_EXPR = seal(/\\${[\\w\\W]*}/gm);\nexport const DATA_ATTR = seal(/^data-[\\-\\w.\\u00B7-\\uFFFF]/); // eslint-disable-line no-useless-escape\nexport const ARIA_ATTR = seal(/^aria-[\\-\\w]+$/); // eslint-disable-line no-useless-escape\nexport const IS_ALLOWED_URI = seal(\n /^(?:(?:(?:f|ht)tps?|mailto|tel|callto|sms|cid|xmpp):|[^a-z]|[a-z+.\\-]+(?:[^a-z+.\\-:]|$))/i // eslint-disable-line no-useless-escape\n);\nexport const IS_SCRIPT_OR_DATA = seal(/^(?:\\w+script|data):/i);\nexport const ATTR_WHITESPACE = seal(\n /[\\u0000-\\u0020\\u00A0\\u1680\\u180E\\u2000-\\u2029\\u205F\\u3000]/g // eslint-disable-line no-control-regex\n);\nexport const DOCTYPE_NAME = seal(/^html$/i);\nexport const CUSTOM_ELEMENT = seal(/^[a-z][.\\w]*(-[.\\w]+)+$/i);\n","import * as TAGS from './tags.js';\nimport * as ATTRS from './attrs.js';\nimport * as EXPRESSIONS from './regexp.js';\nimport {\n addToSet,\n clone,\n entries,\n freeze,\n arrayForEach,\n arrayPop,\n arrayPush,\n stringMatch,\n stringReplace,\n stringToLowerCase,\n stringToString,\n stringIndexOf,\n stringTrim,\n regExpTest,\n typeErrorCreate,\n lookupGetter,\n create,\n objectHasOwnProperty,\n} from './utils.js';\n\n// https://developer.mozilla.org/en-US/docs/Web/API/Node/nodeType\nconst NODE_TYPE = {\n element: 1,\n attribute: 2,\n text: 3,\n cdataSection: 4,\n entityReference: 5, // Deprecated\n entityNode: 6, // Deprecated\n progressingInstruction: 7,\n comment: 8,\n document: 9,\n documentType: 10,\n documentFragment: 11,\n notation: 12, // Deprecated\n};\n\nconst getGlobal = function () {\n return typeof window === 'undefined' ? null : window;\n};\n\n/**\n * Creates a no-op policy for internal use only.\n * Don't export this function outside this module!\n * @param {TrustedTypePolicyFactory} trustedTypes The policy factory.\n * @param {HTMLScriptElement} purifyHostElement The Script element used to load DOMPurify (to determine policy name suffix).\n * @return {TrustedTypePolicy} The policy created (or null, if Trusted Types\n * are not supported or creating the policy failed).\n */\nconst _createTrustedTypesPolicy = function (trustedTypes, purifyHostElement) {\n if (\n typeof trustedTypes !== 'object' ||\n typeof trustedTypes.createPolicy !== 'function'\n ) {\n return null;\n }\n\n // Allow the callers to control the unique policy name\n // by adding a data-tt-policy-suffix to the script element with the DOMPurify.\n // Policy creation with duplicate names throws in Trusted Types.\n let suffix = null;\n const ATTR_NAME = 'data-tt-policy-suffix';\n if (purifyHostElement && purifyHostElement.hasAttribute(ATTR_NAME)) {\n suffix = purifyHostElement.getAttribute(ATTR_NAME);\n }\n\n const policyName = 'dompurify' + (suffix ? '#' + suffix : '');\n\n try {\n return trustedTypes.createPolicy(policyName, {\n createHTML(html) {\n return html;\n },\n createScriptURL(scriptUrl) {\n return scriptUrl;\n },\n });\n } catch (_) {\n // Policy creation failed (most likely another DOMPurify script has\n // already run). Skip creating the policy, as this will only cause errors\n // if TT are enforced.\n console.warn(\n 'TrustedTypes policy ' + policyName + ' could not be created.'\n );\n return null;\n }\n};\n\nfunction createDOMPurify(window = getGlobal()) {\n const DOMPurify = (root) => createDOMPurify(root);\n\n /**\n * Version label, exposed for easier checks\n * if DOMPurify is up to date or not\n */\n DOMPurify.version = VERSION;\n\n /**\n * Array of elements that DOMPurify removed during sanitation.\n * Empty if nothing was removed.\n */\n DOMPurify.removed = [];\n\n if (\n !window ||\n !window.document ||\n window.document.nodeType !== NODE_TYPE.document\n ) {\n // Not running in a browser, provide a factory function\n // so that you can pass your own Window\n DOMPurify.isSupported = false;\n\n return DOMPurify;\n }\n\n let { document } = window;\n\n const originalDocument = document;\n const currentScript = originalDocument.currentScript;\n const {\n DocumentFragment,\n HTMLTemplateElement,\n Node,\n Element,\n NodeFilter,\n NamedNodeMap = window.NamedNodeMap || window.MozNamedAttrMap,\n HTMLFormElement,\n DOMParser,\n trustedTypes,\n } = window;\n\n const ElementPrototype = Element.prototype;\n\n const cloneNode = lookupGetter(ElementPrototype, 'cloneNode');\n const remove = lookupGetter(ElementPrototype, 'remove');\n const getNextSibling = lookupGetter(ElementPrototype, 'nextSibling');\n const getChildNodes = lookupGetter(ElementPrototype, 'childNodes');\n const getParentNode = lookupGetter(ElementPrototype, 'parentNode');\n\n // As per issue #47, the web-components registry is inherited by a\n // new document created via createHTMLDocument. As per the spec\n // (http://w3c.github.io/webcomponents/spec/custom/#creating-and-passing-registries)\n // a new empty registry is used when creating a template contents owner\n // document, so we use that as our parent document to ensure nothing\n // is inherited.\n if (typeof HTMLTemplateElement === 'function') {\n const template = document.createElement('template');\n if (template.content && template.content.ownerDocument) {\n document = template.content.ownerDocument;\n }\n }\n\n let trustedTypesPolicy;\n let emptyHTML = '';\n\n const {\n implementation,\n createNodeIterator,\n createDocumentFragment,\n getElementsByTagName,\n } = document;\n const { importNode } = originalDocument;\n\n let hooks = {};\n\n /**\n * Expose whether this browser supports running the full DOMPurify.\n */\n DOMPurify.isSupported =\n typeof entries === 'function' &&\n typeof getParentNode === 'function' &&\n implementation &&\n implementation.createHTMLDocument !== undefined;\n\n const {\n MUSTACHE_EXPR,\n ERB_EXPR,\n TMPLIT_EXPR,\n DATA_ATTR,\n ARIA_ATTR,\n IS_SCRIPT_OR_DATA,\n ATTR_WHITESPACE,\n CUSTOM_ELEMENT,\n } = EXPRESSIONS;\n\n let { IS_ALLOWED_URI } = EXPRESSIONS;\n\n /**\n * We consider the elements and attributes below to be safe. Ideally\n * don't add any new ones but feel free to remove unwanted ones.\n */\n\n /* allowed element names */\n let ALLOWED_TAGS = null;\n const DEFAULT_ALLOWED_TAGS = addToSet({}, [\n ...TAGS.html,\n ...TAGS.svg,\n ...TAGS.svgFilters,\n ...TAGS.mathMl,\n ...TAGS.text,\n ]);\n\n /* Allowed attribute names */\n let ALLOWED_ATTR = null;\n const DEFAULT_ALLOWED_ATTR = addToSet({}, [\n ...ATTRS.html,\n ...ATTRS.svg,\n ...ATTRS.mathMl,\n ...ATTRS.xml,\n ]);\n\n /*\n * Configure how DOMPUrify should handle custom elements and their attributes as well as customized built-in elements.\n * @property {RegExp|Function|null} tagNameCheck one of [null, regexPattern, predicate]. Default: `null` (disallow any custom elements)\n * @property {RegExp|Function|null} attributeNameCheck one of [null, regexPattern, predicate]. Default: `null` (disallow any attributes not on the allow list)\n * @property {boolean} allowCustomizedBuiltInElements allow custom elements derived from built-ins if they pass CUSTOM_ELEMENT_HANDLING.tagNameCheck. Default: `false`.\n */\n let CUSTOM_ELEMENT_HANDLING = Object.seal(\n create(null, {\n tagNameCheck: {\n writable: true,\n configurable: false,\n enumerable: true,\n value: null,\n },\n attributeNameCheck: {\n writable: true,\n configurable: false,\n enumerable: true,\n value: null,\n },\n allowCustomizedBuiltInElements: {\n writable: true,\n configurable: false,\n enumerable: true,\n value: false,\n },\n })\n );\n\n /* Explicitly forbidden tags (overrides ALLOWED_TAGS/ADD_TAGS) */\n let FORBID_TAGS = null;\n\n /* Explicitly forbidden attributes (overrides ALLOWED_ATTR/ADD_ATTR) */\n let FORBID_ATTR = null;\n\n /* Decide if ARIA attributes are okay */\n let ALLOW_ARIA_ATTR = true;\n\n /* Decide if custom data attributes are okay */\n let ALLOW_DATA_ATTR = true;\n\n /* Decide if unknown protocols are okay */\n let ALLOW_UNKNOWN_PROTOCOLS = false;\n\n /* Decide if self-closing tags in attributes are allowed.\n * Usually removed due to a mXSS issue in jQuery 3.0 */\n let ALLOW_SELF_CLOSE_IN_ATTR = true;\n\n /* Output should be safe for common template engines.\n * This means, DOMPurify removes data attributes, mustaches and ERB\n */\n let SAFE_FOR_TEMPLATES = false;\n\n /* Output should be safe even for XML used within HTML and alike.\n * This means, DOMPurify removes comments when containing risky content.\n */\n let SAFE_FOR_XML = true;\n\n /* Decide if document with ... should be returned */\n let WHOLE_DOCUMENT = false;\n\n /* Track whether config is already set on this instance of DOMPurify. */\n let SET_CONFIG = false;\n\n /* Decide if all elements (e.g. style, script) must be children of\n * document.body. By default, browsers might move them to document.head */\n let FORCE_BODY = false;\n\n /* Decide if a DOM `HTMLBodyElement` should be returned, instead of a html\n * string (or a TrustedHTML object if Trusted Types are supported).\n * If `WHOLE_DOCUMENT` is enabled a `HTMLHtmlElement` will be returned instead\n */\n let RETURN_DOM = false;\n\n /* Decide if a DOM `DocumentFragment` should be returned, instead of a html\n * string (or a TrustedHTML object if Trusted Types are supported) */\n let RETURN_DOM_FRAGMENT = false;\n\n /* Try to return a Trusted Type object instead of a string, return a string in\n * case Trusted Types are not supported */\n let RETURN_TRUSTED_TYPE = false;\n\n /* Output should be free from DOM clobbering attacks?\n * This sanitizes markups named with colliding, clobberable built-in DOM APIs.\n */\n let SANITIZE_DOM = true;\n\n /* Achieve full DOM Clobbering protection by isolating the namespace of named\n * properties and JS variables, mitigating attacks that abuse the HTML/DOM spec rules.\n *\n * HTML/DOM spec rules that enable DOM Clobbering:\n * - Named Access on Window (§7.3.3)\n * - DOM Tree Accessors (§3.1.5)\n * - Form Element Parent-Child Relations (§4.10.3)\n * - Iframe srcdoc / Nested WindowProxies (§4.8.5)\n * - HTMLCollection (§4.2.10.2)\n *\n * Namespace isolation is implemented by prefixing `id` and `name` attributes\n * with a constant string, i.e., `user-content-`\n */\n let SANITIZE_NAMED_PROPS = false;\n const SANITIZE_NAMED_PROPS_PREFIX = 'user-content-';\n\n /* Keep element content when removing element? */\n let KEEP_CONTENT = true;\n\n /* If a `Node` is passed to sanitize(), then performs sanitization in-place instead\n * of importing it into a new Document and returning a sanitized copy */\n let IN_PLACE = false;\n\n /* Allow usage of profiles like html, svg and mathMl */\n let USE_PROFILES = {};\n\n /* Tags to ignore content of when KEEP_CONTENT is true */\n let FORBID_CONTENTS = null;\n const DEFAULT_FORBID_CONTENTS = addToSet({}, [\n 'annotation-xml',\n 'audio',\n 'colgroup',\n 'desc',\n 'foreignobject',\n 'head',\n 'iframe',\n 'math',\n 'mi',\n 'mn',\n 'mo',\n 'ms',\n 'mtext',\n 'noembed',\n 'noframes',\n 'noscript',\n 'plaintext',\n 'script',\n 'style',\n 'svg',\n 'template',\n 'thead',\n 'title',\n 'video',\n 'xmp',\n ]);\n\n /* Tags that are safe for data: URIs */\n let DATA_URI_TAGS = null;\n const DEFAULT_DATA_URI_TAGS = addToSet({}, [\n 'audio',\n 'video',\n 'img',\n 'source',\n 'image',\n 'track',\n ]);\n\n /* Attributes safe for values like \"javascript:\" */\n let URI_SAFE_ATTRIBUTES = null;\n const DEFAULT_URI_SAFE_ATTRIBUTES = addToSet({}, [\n 'alt',\n 'class',\n 'for',\n 'id',\n 'label',\n 'name',\n 'pattern',\n 'placeholder',\n 'role',\n 'summary',\n 'title',\n 'value',\n 'style',\n 'xmlns',\n ]);\n\n const MATHML_NAMESPACE = 'http://www.w3.org/1998/Math/MathML';\n const SVG_NAMESPACE = 'http://www.w3.org/2000/svg';\n const HTML_NAMESPACE = 'http://www.w3.org/1999/xhtml';\n /* Document namespace */\n let NAMESPACE = HTML_NAMESPACE;\n let IS_EMPTY_INPUT = false;\n\n /* Allowed XHTML+XML namespaces */\n let ALLOWED_NAMESPACES = null;\n const DEFAULT_ALLOWED_NAMESPACES = addToSet(\n {},\n [MATHML_NAMESPACE, SVG_NAMESPACE, HTML_NAMESPACE],\n stringToString\n );\n\n /* Parsing of strict XHTML documents */\n let PARSER_MEDIA_TYPE = null;\n const SUPPORTED_PARSER_MEDIA_TYPES = ['application/xhtml+xml', 'text/html'];\n const DEFAULT_PARSER_MEDIA_TYPE = 'text/html';\n let transformCaseFunc = null;\n\n /* Keep a reference to config to pass to hooks */\n let CONFIG = null;\n\n /* Ideally, do not touch anything below this line */\n /* ______________________________________________ */\n\n const formElement = document.createElement('form');\n\n const isRegexOrFunction = function (testValue) {\n return testValue instanceof RegExp || testValue instanceof Function;\n };\n\n /**\n * _parseConfig\n *\n * @param {Object} cfg optional config literal\n */\n // eslint-disable-next-line complexity\n const _parseConfig = function (cfg = {}) {\n if (CONFIG && CONFIG === cfg) {\n return;\n }\n\n /* Shield configuration object from tampering */\n if (!cfg || typeof cfg !== 'object') {\n cfg = {};\n }\n\n /* Shield configuration object from prototype pollution */\n cfg = clone(cfg);\n\n PARSER_MEDIA_TYPE =\n // eslint-disable-next-line unicorn/prefer-includes\n SUPPORTED_PARSER_MEDIA_TYPES.indexOf(cfg.PARSER_MEDIA_TYPE) === -1\n ? DEFAULT_PARSER_MEDIA_TYPE\n : cfg.PARSER_MEDIA_TYPE;\n\n // HTML tags and attributes are not case-sensitive, converting to lowercase. Keeping XHTML as is.\n transformCaseFunc =\n PARSER_MEDIA_TYPE === 'application/xhtml+xml'\n ? stringToString\n : stringToLowerCase;\n\n /* Set configuration parameters */\n ALLOWED_TAGS = objectHasOwnProperty(cfg, 'ALLOWED_TAGS')\n ? addToSet({}, cfg.ALLOWED_TAGS, transformCaseFunc)\n : DEFAULT_ALLOWED_TAGS;\n ALLOWED_ATTR = objectHasOwnProperty(cfg, 'ALLOWED_ATTR')\n ? addToSet({}, cfg.ALLOWED_ATTR, transformCaseFunc)\n : DEFAULT_ALLOWED_ATTR;\n ALLOWED_NAMESPACES = objectHasOwnProperty(cfg, 'ALLOWED_NAMESPACES')\n ? addToSet({}, cfg.ALLOWED_NAMESPACES, stringToString)\n : DEFAULT_ALLOWED_NAMESPACES;\n URI_SAFE_ATTRIBUTES = objectHasOwnProperty(cfg, 'ADD_URI_SAFE_ATTR')\n ? addToSet(\n clone(DEFAULT_URI_SAFE_ATTRIBUTES), // eslint-disable-line indent\n cfg.ADD_URI_SAFE_ATTR, // eslint-disable-line indent\n transformCaseFunc // eslint-disable-line indent\n ) // eslint-disable-line indent\n : DEFAULT_URI_SAFE_ATTRIBUTES;\n DATA_URI_TAGS = objectHasOwnProperty(cfg, 'ADD_DATA_URI_TAGS')\n ? addToSet(\n clone(DEFAULT_DATA_URI_TAGS), // eslint-disable-line indent\n cfg.ADD_DATA_URI_TAGS, // eslint-disable-line indent\n transformCaseFunc // eslint-disable-line indent\n ) // eslint-disable-line indent\n : DEFAULT_DATA_URI_TAGS;\n FORBID_CONTENTS = objectHasOwnProperty(cfg, 'FORBID_CONTENTS')\n ? addToSet({}, cfg.FORBID_CONTENTS, transformCaseFunc)\n : DEFAULT_FORBID_CONTENTS;\n FORBID_TAGS = objectHasOwnProperty(cfg, 'FORBID_TAGS')\n ? addToSet({}, cfg.FORBID_TAGS, transformCaseFunc)\n : {};\n FORBID_ATTR = objectHasOwnProperty(cfg, 'FORBID_ATTR')\n ? addToSet({}, cfg.FORBID_ATTR, transformCaseFunc)\n : {};\n USE_PROFILES = objectHasOwnProperty(cfg, 'USE_PROFILES')\n ? cfg.USE_PROFILES\n : false;\n ALLOW_ARIA_ATTR = cfg.ALLOW_ARIA_ATTR !== false; // Default true\n ALLOW_DATA_ATTR = cfg.ALLOW_DATA_ATTR !== false; // Default true\n ALLOW_UNKNOWN_PROTOCOLS = cfg.ALLOW_UNKNOWN_PROTOCOLS || false; // Default false\n ALLOW_SELF_CLOSE_IN_ATTR = cfg.ALLOW_SELF_CLOSE_IN_ATTR !== false; // Default true\n SAFE_FOR_TEMPLATES = cfg.SAFE_FOR_TEMPLATES || false; // Default false\n SAFE_FOR_XML = cfg.SAFE_FOR_XML !== false; // Default true\n WHOLE_DOCUMENT = cfg.WHOLE_DOCUMENT || false; // Default false\n RETURN_DOM = cfg.RETURN_DOM || false; // Default false\n RETURN_DOM_FRAGMENT = cfg.RETURN_DOM_FRAGMENT || false; // Default false\n RETURN_TRUSTED_TYPE = cfg.RETURN_TRUSTED_TYPE || false; // Default false\n FORCE_BODY = cfg.FORCE_BODY || false; // Default false\n SANITIZE_DOM = cfg.SANITIZE_DOM !== false; // Default true\n SANITIZE_NAMED_PROPS = cfg.SANITIZE_NAMED_PROPS || false; // Default false\n KEEP_CONTENT = cfg.KEEP_CONTENT !== false; // Default true\n IN_PLACE = cfg.IN_PLACE || false; // Default false\n IS_ALLOWED_URI = cfg.ALLOWED_URI_REGEXP || EXPRESSIONS.IS_ALLOWED_URI;\n NAMESPACE = cfg.NAMESPACE || HTML_NAMESPACE;\n CUSTOM_ELEMENT_HANDLING = cfg.CUSTOM_ELEMENT_HANDLING || {};\n if (\n cfg.CUSTOM_ELEMENT_HANDLING &&\n isRegexOrFunction(cfg.CUSTOM_ELEMENT_HANDLING.tagNameCheck)\n ) {\n CUSTOM_ELEMENT_HANDLING.tagNameCheck =\n cfg.CUSTOM_ELEMENT_HANDLING.tagNameCheck;\n }\n\n if (\n cfg.CUSTOM_ELEMENT_HANDLING &&\n isRegexOrFunction(cfg.CUSTOM_ELEMENT_HANDLING.attributeNameCheck)\n ) {\n CUSTOM_ELEMENT_HANDLING.attributeNameCheck =\n cfg.CUSTOM_ELEMENT_HANDLING.attributeNameCheck;\n }\n\n if (\n cfg.CUSTOM_ELEMENT_HANDLING &&\n typeof cfg.CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements ===\n 'boolean'\n ) {\n CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements =\n cfg.CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements;\n }\n\n if (SAFE_FOR_TEMPLATES) {\n ALLOW_DATA_ATTR = false;\n }\n\n if (RETURN_DOM_FRAGMENT) {\n RETURN_DOM = true;\n }\n\n /* Parse profile info */\n if (USE_PROFILES) {\n ALLOWED_TAGS = addToSet({}, TAGS.text);\n ALLOWED_ATTR = [];\n if (USE_PROFILES.html === true) {\n addToSet(ALLOWED_TAGS, TAGS.html);\n addToSet(ALLOWED_ATTR, ATTRS.html);\n }\n\n if (USE_PROFILES.svg === true) {\n addToSet(ALLOWED_TAGS, TAGS.svg);\n addToSet(ALLOWED_ATTR, ATTRS.svg);\n addToSet(ALLOWED_ATTR, ATTRS.xml);\n }\n\n if (USE_PROFILES.svgFilters === true) {\n addToSet(ALLOWED_TAGS, TAGS.svgFilters);\n addToSet(ALLOWED_ATTR, ATTRS.svg);\n addToSet(ALLOWED_ATTR, ATTRS.xml);\n }\n\n if (USE_PROFILES.mathMl === true) {\n addToSet(ALLOWED_TAGS, TAGS.mathMl);\n addToSet(ALLOWED_ATTR, ATTRS.mathMl);\n addToSet(ALLOWED_ATTR, ATTRS.xml);\n }\n }\n\n /* Merge configuration parameters */\n if (cfg.ADD_TAGS) {\n if (ALLOWED_TAGS === DEFAULT_ALLOWED_TAGS) {\n ALLOWED_TAGS = clone(ALLOWED_TAGS);\n }\n\n addToSet(ALLOWED_TAGS, cfg.ADD_TAGS, transformCaseFunc);\n }\n\n if (cfg.ADD_ATTR) {\n if (ALLOWED_ATTR === DEFAULT_ALLOWED_ATTR) {\n ALLOWED_ATTR = clone(ALLOWED_ATTR);\n }\n\n addToSet(ALLOWED_ATTR, cfg.ADD_ATTR, transformCaseFunc);\n }\n\n if (cfg.ADD_URI_SAFE_ATTR) {\n addToSet(URI_SAFE_ATTRIBUTES, cfg.ADD_URI_SAFE_ATTR, transformCaseFunc);\n }\n\n if (cfg.FORBID_CONTENTS) {\n if (FORBID_CONTENTS === DEFAULT_FORBID_CONTENTS) {\n FORBID_CONTENTS = clone(FORBID_CONTENTS);\n }\n\n addToSet(FORBID_CONTENTS, cfg.FORBID_CONTENTS, transformCaseFunc);\n }\n\n /* Add #text in case KEEP_CONTENT is set to true */\n if (KEEP_CONTENT) {\n ALLOWED_TAGS['#text'] = true;\n }\n\n /* Add html, head and body to ALLOWED_TAGS in case WHOLE_DOCUMENT is true */\n if (WHOLE_DOCUMENT) {\n addToSet(ALLOWED_TAGS, ['html', 'head', 'body']);\n }\n\n /* Add tbody to ALLOWED_TAGS in case tables are permitted, see #286, #365 */\n if (ALLOWED_TAGS.table) {\n addToSet(ALLOWED_TAGS, ['tbody']);\n delete FORBID_TAGS.tbody;\n }\n\n if (cfg.TRUSTED_TYPES_POLICY) {\n if (typeof cfg.TRUSTED_TYPES_POLICY.createHTML !== 'function') {\n throw typeErrorCreate(\n 'TRUSTED_TYPES_POLICY configuration option must provide a \"createHTML\" hook.'\n );\n }\n\n if (typeof cfg.TRUSTED_TYPES_POLICY.createScriptURL !== 'function') {\n throw typeErrorCreate(\n 'TRUSTED_TYPES_POLICY configuration option must provide a \"createScriptURL\" hook.'\n );\n }\n\n // Overwrite existing TrustedTypes policy.\n trustedTypesPolicy = cfg.TRUSTED_TYPES_POLICY;\n\n // Sign local variables required by `sanitize`.\n emptyHTML = trustedTypesPolicy.createHTML('');\n } else {\n // Uninitialized policy, attempt to initialize the internal dompurify policy.\n if (trustedTypesPolicy === undefined) {\n trustedTypesPolicy = _createTrustedTypesPolicy(\n trustedTypes,\n currentScript\n );\n }\n\n // If creating the internal policy succeeded sign internal variables.\n if (trustedTypesPolicy !== null && typeof emptyHTML === 'string') {\n emptyHTML = trustedTypesPolicy.createHTML('');\n }\n }\n\n // Prevent further manipulation of configuration.\n // Not available in IE8, Safari 5, etc.\n if (freeze) {\n freeze(cfg);\n }\n\n CONFIG = cfg;\n };\n\n const MATHML_TEXT_INTEGRATION_POINTS = addToSet({}, [\n 'mi',\n 'mo',\n 'mn',\n 'ms',\n 'mtext',\n ]);\n\n const HTML_INTEGRATION_POINTS = addToSet({}, ['annotation-xml']);\n\n // Certain elements are allowed in both SVG and HTML\n // namespace. We need to specify them explicitly\n // so that they don't get erroneously deleted from\n // HTML namespace.\n const COMMON_SVG_AND_HTML_ELEMENTS = addToSet({}, [\n 'title',\n 'style',\n 'font',\n 'a',\n 'script',\n ]);\n\n /* Keep track of all possible SVG and MathML tags\n * so that we can perform the namespace checks\n * correctly. */\n const ALL_SVG_TAGS = addToSet({}, [\n ...TAGS.svg,\n ...TAGS.svgFilters,\n ...TAGS.svgDisallowed,\n ]);\n const ALL_MATHML_TAGS = addToSet({}, [\n ...TAGS.mathMl,\n ...TAGS.mathMlDisallowed,\n ]);\n\n /**\n * @param {Element} element a DOM element whose namespace is being checked\n * @returns {boolean} Return false if the element has a\n * namespace that a spec-compliant parser would never\n * return. Return true otherwise.\n */\n const _checkValidNamespace = function (element) {\n let parent = getParentNode(element);\n\n // In JSDOM, if we're inside shadow DOM, then parentNode\n // can be null. We just simulate parent in this case.\n if (!parent || !parent.tagName) {\n parent = {\n namespaceURI: NAMESPACE,\n tagName: 'template',\n };\n }\n\n const tagName = stringToLowerCase(element.tagName);\n const parentTagName = stringToLowerCase(parent.tagName);\n\n if (!ALLOWED_NAMESPACES[element.namespaceURI]) {\n return false;\n }\n\n if (element.namespaceURI === SVG_NAMESPACE) {\n // The only way to switch from HTML namespace to SVG\n // is via . If it happens via any other tag, then\n // it should be killed.\n if (parent.namespaceURI === HTML_NAMESPACE) {\n return tagName === 'svg';\n }\n\n // The only way to switch from MathML to SVG is via`\n // svg if parent is either or MathML\n // text integration points.\n if (parent.namespaceURI === MATHML_NAMESPACE) {\n return (\n tagName === 'svg' &&\n (parentTagName === 'annotation-xml' ||\n MATHML_TEXT_INTEGRATION_POINTS[parentTagName])\n );\n }\n\n // We only allow elements that are defined in SVG\n // spec. All others are disallowed in SVG namespace.\n return Boolean(ALL_SVG_TAGS[tagName]);\n }\n\n if (element.namespaceURI === MATHML_NAMESPACE) {\n // The only way to switch from HTML namespace to MathML\n // is via . If it happens via any other tag, then\n // it should be killed.\n if (parent.namespaceURI === HTML_NAMESPACE) {\n return tagName === 'math';\n }\n\n // The only way to switch from SVG to MathML is via\n // and HTML integration points\n if (parent.namespaceURI === SVG_NAMESPACE) {\n return tagName === 'math' && HTML_INTEGRATION_POINTS[parentTagName];\n }\n\n // We only allow elements that are defined in MathML\n // spec. All others are disallowed in MathML namespace.\n return Boolean(ALL_MATHML_TAGS[tagName]);\n }\n\n if (element.namespaceURI === HTML_NAMESPACE) {\n // The only way to switch from SVG to HTML is via\n // HTML integration points, and from MathML to HTML\n // is via MathML text integration points\n if (\n parent.namespaceURI === SVG_NAMESPACE &&\n !HTML_INTEGRATION_POINTS[parentTagName]\n ) {\n return false;\n }\n\n if (\n parent.namespaceURI === MATHML_NAMESPACE &&\n !MATHML_TEXT_INTEGRATION_POINTS[parentTagName]\n ) {\n return false;\n }\n\n // We disallow tags that are specific for MathML\n // or SVG and should never appear in HTML namespace\n return (\n !ALL_MATHML_TAGS[tagName] &&\n (COMMON_SVG_AND_HTML_ELEMENTS[tagName] || !ALL_SVG_TAGS[tagName])\n );\n }\n\n // For XHTML and XML documents that support custom namespaces\n if (\n PARSER_MEDIA_TYPE === 'application/xhtml+xml' &&\n ALLOWED_NAMESPACES[element.namespaceURI]\n ) {\n return true;\n }\n\n // The code should never reach this place (this means\n // that the element somehow got namespace that is not\n // HTML, SVG, MathML or allowed via ALLOWED_NAMESPACES).\n // Return false just in case.\n return false;\n };\n\n /**\n * _forceRemove\n *\n * @param {Node} node a DOM node\n */\n const _forceRemove = function (node) {\n arrayPush(DOMPurify.removed, { element: node });\n\n try {\n // eslint-disable-next-line unicorn/prefer-dom-node-remove\n getParentNode(node).removeChild(node);\n } catch (_) {\n remove(node);\n }\n };\n\n /**\n * _removeAttribute\n *\n * @param {String} name an Attribute name\n * @param {Node} node a DOM node\n */\n const _removeAttribute = function (name, node) {\n try {\n arrayPush(DOMPurify.removed, {\n attribute: node.getAttributeNode(name),\n from: node,\n });\n } catch (_) {\n arrayPush(DOMPurify.removed, {\n attribute: null,\n from: node,\n });\n }\n\n node.removeAttribute(name);\n\n // We void attribute values for unremovable \"is\"\" attributes\n if (name === 'is' && !ALLOWED_ATTR[name]) {\n if (RETURN_DOM || RETURN_DOM_FRAGMENT) {\n try {\n _forceRemove(node);\n } catch (_) {}\n } else {\n try {\n node.setAttribute(name, '');\n } catch (_) {}\n }\n }\n };\n\n /**\n * _initDocument\n *\n * @param {String} dirty a string of dirty markup\n * @return {Document} a DOM, filled with the dirty markup\n */\n const _initDocument = function (dirty) {\n /* Create a HTML document */\n let doc = null;\n let leadingWhitespace = null;\n\n if (FORCE_BODY) {\n dirty = '' + dirty;\n } else {\n /* If FORCE_BODY isn't used, leading whitespace needs to be preserved manually */\n const matches = stringMatch(dirty, /^[\\r\\n\\t ]+/);\n leadingWhitespace = matches && matches[0];\n }\n\n if (\n PARSER_MEDIA_TYPE === 'application/xhtml+xml' &&\n NAMESPACE === HTML_NAMESPACE\n ) {\n // Root of XHTML doc must contain xmlns declaration (see https://www.w3.org/TR/xhtml1/normative.html#strict)\n dirty =\n ' ' +\n dirty +\n '';\n }\n\n const dirtyPayload = trustedTypesPolicy\n ? trustedTypesPolicy.createHTML(dirty)\n : dirty;\n /*\n * Use the DOMParser API by default, fallback later if needs be\n * DOMParser not work for svg when has multiple root element.\n */\n if (NAMESPACE === HTML_NAMESPACE) {\n try {\n doc = new DOMParser().parseFromString(dirtyPayload, PARSER_MEDIA_TYPE);\n } catch (_) {}\n }\n\n /* Use createHTMLDocument in case DOMParser is not available */\n if (!doc || !doc.documentElement) {\n doc = implementation.createDocument(NAMESPACE, 'template', null);\n try {\n doc.documentElement.innerHTML = IS_EMPTY_INPUT\n ? emptyHTML\n : dirtyPayload;\n } catch (_) {\n // Syntax error if dirtyPayload is invalid xml\n }\n }\n\n const body = doc.body || doc.documentElement;\n\n if (dirty && leadingWhitespace) {\n body.insertBefore(\n document.createTextNode(leadingWhitespace),\n body.childNodes[0] || null\n );\n }\n\n /* Work on whole document or just its body */\n if (NAMESPACE === HTML_NAMESPACE) {\n return getElementsByTagName.call(\n doc,\n WHOLE_DOCUMENT ? 'html' : 'body'\n )[0];\n }\n\n return WHOLE_DOCUMENT ? doc.documentElement : body;\n };\n\n /**\n * Creates a NodeIterator object that you can use to traverse filtered lists of nodes or elements in a document.\n *\n * @param {Node} root The root element or node to start traversing on.\n * @return {NodeIterator} The created NodeIterator\n */\n const _createNodeIterator = function (root) {\n return createNodeIterator.call(\n root.ownerDocument || root,\n root,\n // eslint-disable-next-line no-bitwise\n NodeFilter.SHOW_ELEMENT |\n NodeFilter.SHOW_COMMENT |\n NodeFilter.SHOW_TEXT |\n NodeFilter.SHOW_PROCESSING_INSTRUCTION |\n NodeFilter.SHOW_CDATA_SECTION,\n null\n );\n };\n\n /**\n * _isClobbered\n *\n * @param {Node} elm element to check for clobbering attacks\n * @return {Boolean} true if clobbered, false if safe\n */\n const _isClobbered = function (elm) {\n return (\n elm instanceof HTMLFormElement &&\n (typeof elm.nodeName !== 'string' ||\n typeof elm.textContent !== 'string' ||\n typeof elm.removeChild !== 'function' ||\n !(elm.attributes instanceof NamedNodeMap) ||\n typeof elm.removeAttribute !== 'function' ||\n typeof elm.setAttribute !== 'function' ||\n typeof elm.namespaceURI !== 'string' ||\n typeof elm.insertBefore !== 'function' ||\n typeof elm.hasChildNodes !== 'function')\n );\n };\n\n /**\n * Checks whether the given object is a DOM node.\n *\n * @param {Node} object object to check whether it's a DOM node\n * @return {Boolean} true is object is a DOM node\n */\n const _isNode = function (object) {\n return typeof Node === 'function' && object instanceof Node;\n };\n\n /**\n * _executeHook\n * Execute user configurable hooks\n *\n * @param {String} entryPoint Name of the hook's entry point\n * @param {Node} currentNode node to work on with the hook\n * @param {Object} data additional hook parameters\n */\n const _executeHook = function (entryPoint, currentNode, data) {\n if (!hooks[entryPoint]) {\n return;\n }\n\n arrayForEach(hooks[entryPoint], (hook) => {\n hook.call(DOMPurify, currentNode, data, CONFIG);\n });\n };\n\n /**\n * _sanitizeElements\n *\n * @protect nodeName\n * @protect textContent\n * @protect removeChild\n *\n * @param {Node} currentNode to check for permission to exist\n * @return {Boolean} true if node was killed, false if left alive\n */\n const _sanitizeElements = function (currentNode) {\n let content = null;\n\n /* Execute a hook if present */\n _executeHook('beforeSanitizeElements', currentNode, null);\n\n /* Check if element is clobbered or can clobber */\n if (_isClobbered(currentNode)) {\n _forceRemove(currentNode);\n return true;\n }\n\n /* Now let's check the element's type and name */\n const tagName = transformCaseFunc(currentNode.nodeName);\n\n /* Execute a hook if present */\n _executeHook('uponSanitizeElement', currentNode, {\n tagName,\n allowedTags: ALLOWED_TAGS,\n });\n\n /* Detect mXSS attempts abusing namespace confusion */\n if (\n currentNode.hasChildNodes() &&\n !_isNode(currentNode.firstElementChild) &&\n regExpTest(/<[/\\w]/g, currentNode.innerHTML) &&\n regExpTest(/<[/\\w]/g, currentNode.textContent)\n ) {\n _forceRemove(currentNode);\n return true;\n }\n\n /* Remove any occurrence of processing instructions */\n if (currentNode.nodeType === NODE_TYPE.progressingInstruction) {\n _forceRemove(currentNode);\n return true;\n }\n\n /* Remove any kind of possibly harmful comments */\n if (\n SAFE_FOR_XML &&\n currentNode.nodeType === NODE_TYPE.comment &&\n regExpTest(/<[/\\w]/g, currentNode.data)\n ) {\n _forceRemove(currentNode);\n return true;\n }\n\n /* Remove element if anything forbids its presence */\n if (!ALLOWED_TAGS[tagName] || FORBID_TAGS[tagName]) {\n /* Check if we have a custom element to handle */\n if (!FORBID_TAGS[tagName] && _isBasicCustomElement(tagName)) {\n if (\n CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof RegExp &&\n regExpTest(CUSTOM_ELEMENT_HANDLING.tagNameCheck, tagName)\n ) {\n return false;\n }\n\n if (\n CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof Function &&\n CUSTOM_ELEMENT_HANDLING.tagNameCheck(tagName)\n ) {\n return false;\n }\n }\n\n /* Keep content except for bad-listed elements */\n if (KEEP_CONTENT && !FORBID_CONTENTS[tagName]) {\n const parentNode = getParentNode(currentNode) || currentNode.parentNode;\n const childNodes = getChildNodes(currentNode) || currentNode.childNodes;\n\n if (childNodes && parentNode) {\n const childCount = childNodes.length;\n\n for (let i = childCount - 1; i >= 0; --i) {\n const childClone = cloneNode(childNodes[i], true);\n childClone.__removalCount = (currentNode.__removalCount || 0) + 1;\n parentNode.insertBefore(childClone, getNextSibling(currentNode));\n }\n }\n }\n\n _forceRemove(currentNode);\n return true;\n }\n\n /* Check whether element has a valid namespace */\n if (currentNode instanceof Element && !_checkValidNamespace(currentNode)) {\n _forceRemove(currentNode);\n return true;\n }\n\n /* Make sure that older browsers don't get fallback-tag mXSS */\n if (\n (tagName === 'noscript' ||\n tagName === 'noembed' ||\n tagName === 'noframes') &&\n regExpTest(/<\\/no(script|embed|frames)/i, currentNode.innerHTML)\n ) {\n _forceRemove(currentNode);\n return true;\n }\n\n /* Sanitize element content to be template-safe */\n if (SAFE_FOR_TEMPLATES && currentNode.nodeType === NODE_TYPE.text) {\n /* Get the element's text content */\n content = currentNode.textContent;\n\n arrayForEach([MUSTACHE_EXPR, ERB_EXPR, TMPLIT_EXPR], (expr) => {\n content = stringReplace(content, expr, ' ');\n });\n\n if (currentNode.textContent !== content) {\n arrayPush(DOMPurify.removed, { element: currentNode.cloneNode() });\n currentNode.textContent = content;\n }\n }\n\n /* Execute a hook if present */\n _executeHook('afterSanitizeElements', currentNode, null);\n\n return false;\n };\n\n /**\n * _isValidAttribute\n *\n * @param {string} lcTag Lowercase tag name of containing element.\n * @param {string} lcName Lowercase attribute name.\n * @param {string} value Attribute value.\n * @return {Boolean} Returns true if `value` is valid, otherwise false.\n */\n // eslint-disable-next-line complexity\n const _isValidAttribute = function (lcTag, lcName, value) {\n /* Make sure attribute cannot clobber */\n if (\n SANITIZE_DOM &&\n (lcName === 'id' || lcName === 'name') &&\n (value in document || value in formElement)\n ) {\n return false;\n }\n\n /* Allow valid data-* attributes: At least one character after \"-\"\n (https://html.spec.whatwg.org/multipage/dom.html#embedding-custom-non-visible-data-with-the-data-*-attributes)\n XML-compatible (https://html.spec.whatwg.org/multipage/infrastructure.html#xml-compatible and http://www.w3.org/TR/xml/#d0e804)\n We don't need to check the value; it's always URI safe. */\n if (\n ALLOW_DATA_ATTR &&\n !FORBID_ATTR[lcName] &&\n regExpTest(DATA_ATTR, lcName)\n ) {\n // This attribute is safe\n } else if (ALLOW_ARIA_ATTR && regExpTest(ARIA_ATTR, lcName)) {\n // This attribute is safe\n /* Otherwise, check the name is permitted */\n } else if (!ALLOWED_ATTR[lcName] || FORBID_ATTR[lcName]) {\n if (\n // First condition does a very basic check if a) it's basically a valid custom element tagname AND\n // b) if the tagName passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.tagNameCheck\n // and c) if the attribute name passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.attributeNameCheck\n (_isBasicCustomElement(lcTag) &&\n ((CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof RegExp &&\n regExpTest(CUSTOM_ELEMENT_HANDLING.tagNameCheck, lcTag)) ||\n (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof Function &&\n CUSTOM_ELEMENT_HANDLING.tagNameCheck(lcTag))) &&\n ((CUSTOM_ELEMENT_HANDLING.attributeNameCheck instanceof RegExp &&\n regExpTest(CUSTOM_ELEMENT_HANDLING.attributeNameCheck, lcName)) ||\n (CUSTOM_ELEMENT_HANDLING.attributeNameCheck instanceof Function &&\n CUSTOM_ELEMENT_HANDLING.attributeNameCheck(lcName)))) ||\n // Alternative, second condition checks if it's an `is`-attribute, AND\n // the value passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.tagNameCheck\n (lcName === 'is' &&\n CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements &&\n ((CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof RegExp &&\n regExpTest(CUSTOM_ELEMENT_HANDLING.tagNameCheck, value)) ||\n (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof Function &&\n CUSTOM_ELEMENT_HANDLING.tagNameCheck(value))))\n ) {\n // If user has supplied a regexp or function in CUSTOM_ELEMENT_HANDLING.tagNameCheck, we need to also allow derived custom elements using the same tagName test.\n // Additionally, we need to allow attributes passing the CUSTOM_ELEMENT_HANDLING.attributeNameCheck user has configured, as custom elements can define these at their own discretion.\n } else {\n return false;\n }\n /* Check value is safe. First, is attr inert? If so, is safe */\n } else if (URI_SAFE_ATTRIBUTES[lcName]) {\n // This attribute is safe\n /* Check no script, data or unknown possibly unsafe URI\n unless we know URI values are safe for that attribute */\n } else if (\n regExpTest(IS_ALLOWED_URI, stringReplace(value, ATTR_WHITESPACE, ''))\n ) {\n // This attribute is safe\n /* Keep image data URIs alive if src/xlink:href is allowed */\n /* Further prevent gadget XSS for dynamically built script tags */\n } else if (\n (lcName === 'src' || lcName === 'xlink:href' || lcName === 'href') &&\n lcTag !== 'script' &&\n stringIndexOf(value, 'data:') === 0 &&\n DATA_URI_TAGS[lcTag]\n ) {\n // This attribute is safe\n /* Allow unknown protocols: This provides support for links that\n are handled by protocol handlers which may be unknown ahead of\n time, e.g. fb:, spotify: */\n } else if (\n ALLOW_UNKNOWN_PROTOCOLS &&\n !regExpTest(IS_SCRIPT_OR_DATA, stringReplace(value, ATTR_WHITESPACE, ''))\n ) {\n // This attribute is safe\n /* Check for binary attributes */\n } else if (value) {\n return false;\n } else {\n // Binary attributes are safe at this point\n /* Anything else, presume unsafe, do not add it back */\n }\n\n return true;\n };\n\n /**\n * _isBasicCustomElement\n * checks if at least one dash is included in tagName, and it's not the first char\n * for more sophisticated checking see https://github.com/sindresorhus/validate-element-name\n *\n * @param {string} tagName name of the tag of the node to sanitize\n * @returns {boolean} Returns true if the tag name meets the basic criteria for a custom element, otherwise false.\n */\n const _isBasicCustomElement = function (tagName) {\n return tagName !== 'annotation-xml' && stringMatch(tagName, CUSTOM_ELEMENT);\n };\n\n /**\n * _sanitizeAttributes\n *\n * @protect attributes\n * @protect nodeName\n * @protect removeAttribute\n * @protect setAttribute\n *\n * @param {Node} currentNode to sanitize\n */\n const _sanitizeAttributes = function (currentNode) {\n /* Execute a hook if present */\n _executeHook('beforeSanitizeAttributes', currentNode, null);\n\n const { attributes } = currentNode;\n\n /* Check if we have attributes; if not we might have a text node */\n if (!attributes) {\n return;\n }\n\n const hookEvent = {\n attrName: '',\n attrValue: '',\n keepAttr: true,\n allowedAttributes: ALLOWED_ATTR,\n };\n let l = attributes.length;\n\n /* Go backwards over all attributes; safely remove bad ones */\n while (l--) {\n const attr = attributes[l];\n const { name, namespaceURI, value: attrValue } = attr;\n const lcName = transformCaseFunc(name);\n\n let value = name === 'value' ? attrValue : stringTrim(attrValue);\n\n /* Execute a hook if present */\n hookEvent.attrName = lcName;\n hookEvent.attrValue = value;\n hookEvent.keepAttr = true;\n hookEvent.forceKeepAttr = undefined; // Allows developers to see this is a property they can set\n _executeHook('uponSanitizeAttribute', currentNode, hookEvent);\n value = hookEvent.attrValue;\n\n /* Did the hooks approve of the attribute? */\n if (hookEvent.forceKeepAttr) {\n continue;\n }\n\n /* Remove attribute */\n _removeAttribute(name, currentNode);\n\n /* Did the hooks approve of the attribute? */\n if (!hookEvent.keepAttr) {\n continue;\n }\n\n /* Work around a security issue in jQuery 3.0 */\n if (!ALLOW_SELF_CLOSE_IN_ATTR && regExpTest(/\\/>/i, value)) {\n _removeAttribute(name, currentNode);\n continue;\n }\n\n /* Sanitize attribute content to be template-safe */\n if (SAFE_FOR_TEMPLATES) {\n arrayForEach([MUSTACHE_EXPR, ERB_EXPR, TMPLIT_EXPR], (expr) => {\n value = stringReplace(value, expr, ' ');\n });\n }\n\n /* Is `value` valid for this attribute? */\n const lcTag = transformCaseFunc(currentNode.nodeName);\n if (!_isValidAttribute(lcTag, lcName, value)) {\n continue;\n }\n\n /* Full DOM Clobbering protection via namespace isolation,\n * Prefix id and name attributes with `user-content-`\n */\n if (SANITIZE_NAMED_PROPS && (lcName === 'id' || lcName === 'name')) {\n // Remove the attribute with this value\n _removeAttribute(name, currentNode);\n\n // Prefix the value and later re-create the attribute with the sanitized value\n value = SANITIZE_NAMED_PROPS_PREFIX + value;\n }\n\n /* Work around a security issue with comments inside attributes */\n if (SAFE_FOR_XML && regExpTest(/((--!?|])>)|<\\/(style|title)/i, value)) {\n _removeAttribute(name, currentNode);\n continue;\n }\n\n /* Handle attributes that require Trusted Types */\n if (\n trustedTypesPolicy &&\n typeof trustedTypes === 'object' &&\n typeof trustedTypes.getAttributeType === 'function'\n ) {\n if (namespaceURI) {\n /* Namespaces are not yet supported, see https://bugs.chromium.org/p/chromium/issues/detail?id=1305293 */\n } else {\n switch (trustedTypes.getAttributeType(lcTag, lcName)) {\n case 'TrustedHTML': {\n value = trustedTypesPolicy.createHTML(value);\n break;\n }\n\n case 'TrustedScriptURL': {\n value = trustedTypesPolicy.createScriptURL(value);\n break;\n }\n\n default: {\n break;\n }\n }\n }\n }\n\n /* Handle invalid data-* attribute set by try-catching it */\n try {\n if (namespaceURI) {\n currentNode.setAttributeNS(namespaceURI, name, value);\n } else {\n /* Fallback to setAttribute() for browser-unrecognized namespaces e.g. \"x-schema\". */\n currentNode.setAttribute(name, value);\n }\n\n if (_isClobbered(currentNode)) {\n _forceRemove(currentNode);\n } else {\n arrayPop(DOMPurify.removed);\n }\n } catch (_) {}\n }\n\n /* Execute a hook if present */\n _executeHook('afterSanitizeAttributes', currentNode, null);\n };\n\n /**\n * _sanitizeShadowDOM\n *\n * @param {DocumentFragment} fragment to iterate over recursively\n */\n const _sanitizeShadowDOM = function (fragment) {\n let shadowNode = null;\n const shadowIterator = _createNodeIterator(fragment);\n\n /* Execute a hook if present */\n _executeHook('beforeSanitizeShadowDOM', fragment, null);\n\n while ((shadowNode = shadowIterator.nextNode())) {\n /* Execute a hook if present */\n _executeHook('uponSanitizeShadowNode', shadowNode, null);\n\n /* Sanitize tags and elements */\n if (_sanitizeElements(shadowNode)) {\n continue;\n }\n\n /* Deep shadow DOM detected */\n if (shadowNode.content instanceof DocumentFragment) {\n _sanitizeShadowDOM(shadowNode.content);\n }\n\n /* Check attributes, sanitize if necessary */\n _sanitizeAttributes(shadowNode);\n }\n\n /* Execute a hook if present */\n _executeHook('afterSanitizeShadowDOM', fragment, null);\n };\n\n /**\n * Sanitize\n * Public method providing core sanitation functionality\n *\n * @param {String|Node} dirty string or DOM node\n * @param {Object} cfg object\n */\n // eslint-disable-next-line complexity\n DOMPurify.sanitize = function (dirty, cfg = {}) {\n let body = null;\n let importedNode = null;\n let currentNode = null;\n let returnNode = null;\n /* Make sure we have a string to sanitize.\n DO NOT return early, as this will return the wrong type if\n the user has requested a DOM object rather than a string */\n IS_EMPTY_INPUT = !dirty;\n if (IS_EMPTY_INPUT) {\n dirty = '';\n }\n\n /* Stringify, in case dirty is an object */\n if (typeof dirty !== 'string' && !_isNode(dirty)) {\n if (typeof dirty.toString === 'function') {\n dirty = dirty.toString();\n if (typeof dirty !== 'string') {\n throw typeErrorCreate('dirty is not a string, aborting');\n }\n } else {\n throw typeErrorCreate('toString is not a function');\n }\n }\n\n /* Return dirty HTML if DOMPurify cannot run */\n if (!DOMPurify.isSupported) {\n return dirty;\n }\n\n /* Assign config vars */\n if (!SET_CONFIG) {\n _parseConfig(cfg);\n }\n\n /* Clean up removed elements */\n DOMPurify.removed = [];\n\n /* Check if dirty is correctly typed for IN_PLACE */\n if (typeof dirty === 'string') {\n IN_PLACE = false;\n }\n\n if (IN_PLACE) {\n /* Do some early pre-sanitization to avoid unsafe root nodes */\n if (dirty.nodeName) {\n const tagName = transformCaseFunc(dirty.nodeName);\n if (!ALLOWED_TAGS[tagName] || FORBID_TAGS[tagName]) {\n throw typeErrorCreate(\n 'root node is forbidden and cannot be sanitized in-place'\n );\n }\n }\n } else if (dirty instanceof Node) {\n /* If dirty is a DOM element, append to an empty document to avoid\n elements being stripped by the parser */\n body = _initDocument('');\n importedNode = body.ownerDocument.importNode(dirty, true);\n if (\n importedNode.nodeType === NODE_TYPE.element &&\n importedNode.nodeName === 'BODY'\n ) {\n /* Node is already a body, use as is */\n body = importedNode;\n } else if (importedNode.nodeName === 'HTML') {\n body = importedNode;\n } else {\n // eslint-disable-next-line unicorn/prefer-dom-node-append\n body.appendChild(importedNode);\n }\n } else {\n /* Exit directly if we have nothing to do */\n if (\n !RETURN_DOM &&\n !SAFE_FOR_TEMPLATES &&\n !WHOLE_DOCUMENT &&\n // eslint-disable-next-line unicorn/prefer-includes\n dirty.indexOf('<') === -1\n ) {\n return trustedTypesPolicy && RETURN_TRUSTED_TYPE\n ? trustedTypesPolicy.createHTML(dirty)\n : dirty;\n }\n\n /* Initialize the document to work on */\n body = _initDocument(dirty);\n\n /* Check we have a DOM node from the data */\n if (!body) {\n return RETURN_DOM ? null : RETURN_TRUSTED_TYPE ? emptyHTML : '';\n }\n }\n\n /* Remove first element node (ours) if FORCE_BODY is set */\n if (body && FORCE_BODY) {\n _forceRemove(body.firstChild);\n }\n\n /* Get node iterator */\n const nodeIterator = _createNodeIterator(IN_PLACE ? dirty : body);\n\n /* Now start iterating over the created document */\n while ((currentNode = nodeIterator.nextNode())) {\n /* Sanitize tags and elements */\n if (_sanitizeElements(currentNode)) {\n continue;\n }\n\n /* Shadow DOM detected, sanitize it */\n if (currentNode.content instanceof DocumentFragment) {\n _sanitizeShadowDOM(currentNode.content);\n }\n\n /* Check attributes, sanitize if necessary */\n _sanitizeAttributes(currentNode);\n }\n\n /* If we sanitized `dirty` in-place, return it. */\n if (IN_PLACE) {\n return dirty;\n }\n\n /* Return sanitized 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+{"version":3,"file":"purify.cjs.js","sources":[],"sourcesContent":[],"names":[],"mappings":";;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;"} \ No newline at end of file diff --git a/dist/purify.es.d.mts b/dist/purify.es.d.mts new file mode 100644 index 000000000..0d69f580d --- /dev/null +++ b/dist/purify.es.d.mts @@ -0,0 +1,399 @@ +/*! @license DOMPurify 3.2.0 | (c) Cure53 and other contributors | Released under the Apache license 2.0 and Mozilla Public License 2.0 | github.com/cure53/DOMPurify/blob/3.2.0/LICENSE */ + +/** + * Configuration to control DOMPurify behavior. + */ +interface Config { + /** + * Extend the existing array of allowed attributes. + */ + ADD_ATTR?: string[] | undefined; + /** + * Extend the existing array of elements that can use Data URIs. + */ + ADD_DATA_URI_TAGS?: string[] | undefined; + /** + * Extend the existing array of allowed tags. + */ + ADD_TAGS?: string[] | undefined; + /** + * Extend the existing array of elements that are safe for URI-like values (be careful, XSS risk). + */ + ADD_URI_SAFE_ATTR?: string[] | undefined; + /** + * Allow ARIA attributes, leave other safe HTML as is (default is true). + */ + ALLOW_ARIA_ATTR?: boolean | undefined; + /** + * Allow HTML5 data attributes, leave other safe HTML as is (default is true). + */ + ALLOW_DATA_ATTR?: boolean | undefined; + /** + * Allow external protocol handlers in URL attributes (default is false, be careful, XSS risk). + * By default only `http`, `https`, `ftp`, `ftps`, `tel`, `mailto`, `callto`, `sms`, `cid` and `xmpp` are allowed. + */ + ALLOW_UNKNOWN_PROTOCOLS?: boolean | undefined; + /** + * Decide if self-closing tags in attributes are allowed. + * Usually removed due to a mXSS issue in jQuery 3.0. + */ + ALLOW_SELF_CLOSE_IN_ATTR?: boolean | undefined; + /** + * Allow only specific attributes. + */ + ALLOWED_ATTR?: string[] | undefined; + /** + * Allow only specific elements. + */ + ALLOWED_TAGS?: string[] | undefined; + /** + * Allow only specific namespaces. Defaults to: + * - `http://www.w3.org/1999/xhtml` + * - `http://www.w3.org/2000/svg` + * - `http://www.w3.org/1998/Math/MathML` + */ + ALLOWED_NAMESPACES?: string[] | undefined; + /** + * Allow specific protocols handlers in URL attributes via regex (be careful, XSS risk). + * Default RegExp: + * ``` + * /^(?:(?:(?:f|ht)tps?|mailto|tel|callto|sms|cid|xmpp):|[^a-z]|[a-z+.\-]+(?:[^a-z+.\-:]|$))/i; + * ``` + */ + ALLOWED_URI_REGEXP?: RegExp | undefined; + /** + * Define how custom elements are handled. + */ + CUSTOM_ELEMENT_HANDLING?: { + /** + * Regular expression or function to match to allowed elements. + * Default is null (disallow any custom elements). + */ + tagNameCheck?: RegExp | ((tagName: string) => boolean) | null | undefined; + /** + * Regular expression or function to match to allowed attributes. + * Default is null (disallow any attributes not on the allow list). + */ + attributeNameCheck?: RegExp | ((attributeName: string) => boolean) | null | undefined; + /** + * Allow custom elements derived from built-ins if they pass `tagNameCheck`. Default is false. + */ + allowCustomizedBuiltInElements?: boolean | undefined; + }; + /** + * Add attributes to block-list. + */ + FORBID_ATTR?: string[] | undefined; + /** + * Add child elements to be removed when their parent is removed. + */ + FORBID_CONTENTS?: string[] | undefined; + /** + * Add elements to block-list. + */ + FORBID_TAGS?: string[] | undefined; + /** + * Glue elements like style, script or others to `document.body` and prevent unintuitive browser behavior in several edge-cases (default is false). + */ + FORCE_BODY?: boolean | undefined; + /** + * Map of non-standard HTML element names to support. Map to true to enable support. For example: + * + * ``` + * HTML_INTEGRATION_POINTS: { foreignobject: true } + * ``` + */ + HTML_INTEGRATION_POINTS?: Record | undefined; + /** + * Sanitize a node "in place", which is much faster depending on how you use DOMPurify. + */ + IN_PLACE?: boolean | undefined; + /** + * Keep an element's content when the element is removed (default is true). + */ + KEEP_CONTENT?: boolean | undefined; + /** + * Map of MathML element names to support. Map to true to enable support. For example: + * + * ``` + * MATHML_TEXT_INTEGRATION_POINTS: { mtext: true } + * ``` + */ + MATHML_TEXT_INTEGRATION_POINTS?: Record | undefined; + /** + * Change the default namespace from HTML to something different. + */ + NAMESPACE?: string | undefined; + /** + * Change the parser type so sanitized data is treated as XML and not as HTML, which is the default. + */ + PARSER_MEDIA_TYPE?: DOMParserSupportedType | undefined; + /** + * Return a DOM `DocumentFragment` instead of an HTML string (default is false). + */ + RETURN_DOM_FRAGMENT?: boolean | undefined; + /** + * Return a DOM `HTMLBodyElement` instead of an HTML string (default is false). + */ + RETURN_DOM?: boolean | undefined; + /** + * Return a TrustedHTML object instead of a string if possible. + */ + RETURN_TRUSTED_TYPE?: boolean | undefined; + /** + * Strip `{{ ... }}`, `${ ... }` and `<% ... %>` to make output safe for template systems. + * Be careful please, this mode is not recommended for production usage. + * Allowing template parsing in user-controlled HTML is not advised at all. + * Only use this mode if there is really no alternative. + */ + SAFE_FOR_TEMPLATES?: boolean | undefined; + /** + * Change how e.g. comments containing risky HTML characters are treated. + * Be very careful, this setting should only be set to `false` if you really only handle + * HTML and nothing else, no SVG, MathML or the like. + * Otherwise, changing from `true` to `false` will lead to XSS in this or some other way. + */ + SAFE_FOR_XML?: boolean | undefined; + /** + * Use DOM Clobbering protection on output (default is true, handle with care, minor XSS risks here). + */ + SANITIZE_DOM?: boolean | undefined; + /** + * Enforce strict DOM Clobbering protection via namespace isolation (default is false). + * When enabled, isolates the namespace of named properties (i.e., `id` and `name` attributes) + * from JS variables by prefixing them with the string `user-content-` + */ + SANITIZE_NAMED_PROPS?: boolean | undefined; + /** + * Supplied policy must define `createHTML` and `createScriptURL`. + */ + TRUSTED_TYPES_POLICY?: TrustedTypePolicy | undefined; + /** + * Controls categories of allowed elements. + * + * Note that the `USE_PROFILES` setting will override the `ALLOWED_TAGS` setting + * so don't use them together. + */ + USE_PROFILES?: false | UseProfilesConfig | undefined; + /** + * Return entire document including tags (default is false). + */ + WHOLE_DOCUMENT?: boolean | undefined; +} +/** + * Defines categories of allowed elements. + */ +interface UseProfilesConfig { + /** + * Allow all safe MathML elements. + */ + mathMl?: boolean | undefined; + /** + * Allow all safe SVG elements. + */ + svg?: boolean | undefined; + /** + * Allow all save SVG Filters. + */ + svgFilters?: boolean | undefined; + /** + * Allow all safe HTML elements. + */ + html?: boolean | undefined; +} + +declare const _default: DOMPurify; + +interface DOMPurify { + /** + * Creates a DOMPurify instance using the given window-like object. + */ + (root: WindowLike): DOMPurify; + /** + * Version label, exposed for easier checks + * if DOMPurify is up to date or not + */ + version: string; + /** + * Array of elements that DOMPurify removed during sanitation. + * Empty if nothing was removed. + */ + removed: Array; + /** + * Expose whether this browser supports running the full DOMPurify. + */ + isSupported: boolean; + /** + * Set the configuration once. + * + * @param cfg configuration object + */ + setConfig(cfg?: Config): void; + /** + * Removes the configuration. + */ + clearConfig(): void; + /** + * Provides core sanitation functionality. + * + * @param dirty string or DOM node + * @param cfg object + * @returns Sanitized TrustedHTML. + */ + sanitize(dirty: string | Node, cfg: Config & { + RETURN_TRUSTED_TYPE: true; + }): TrustedHTML; + /** + * Provides core sanitation functionality. + * + * @param dirty DOM node + * @param cfg object + * @returns Sanitized DOM node. + */ + sanitize(dirty: Node, cfg: Config & { + IN_PLACE: true; + }): Node; + /** + * Provides core sanitation functionality. + * + * @param dirty string or DOM node + * @param cfg object + * @returns Sanitized DOM node. + */ + sanitize(dirty: string | Node, cfg: Config & { + RETURN_DOM: true; + }): Node; + /** + * Provides core sanitation functionality. + * + * @param dirty string or DOM node + * @param cfg object + * @returns Sanitized document fragment. + */ + sanitize(dirty: string | Node, cfg: Config & { + RETURN_DOM_FRAGMENT: true; + }): DocumentFragment; + /** + * Provides core sanitation functionality. + * + * @param dirty string or DOM node + * @param cfg object + * @returns Sanitized string. + */ + sanitize(dirty: string | Node, cfg?: Config): string; + /** + * Checks if an attribute value is valid. + * Uses last set config, if any. Otherwise, uses config defaults. + * + * @param tag Tag name of containing element. + * @param attr Attribute name. + * @param value Attribute value. + * @returns Returns true if `value` is valid. Otherwise, returns false. + */ + isValidAttribute(tag: string, attr: string, value: string): boolean; + /** + * Adds a DOMPurify hook. + * + * @param entryPoint entry point for the hook to add + * @param hookFunction function to execute + */ + addHook(entryPoint: BasicHookName, hookFunction: Hook): void; + /** + * Adds a DOMPurify hook. + * + * @param entryPoint entry point for the hook to add + * @param hookFunction function to execute + */ + addHook(entryPoint: 'uponSanitizeElement', hookFunction: UponSanitizeElementHook): void; + /** + * Adds a DOMPurify hook. + * + * @param entryPoint entry point for the hook to add + * @param hookFunction function to execute + */ + addHook(entryPoint: 'uponSanitizeAttribute', hookFunction: UponSanitizeAttributeHook): void; + /** + * Remove a DOMPurify hook at a given entryPoint + * (pops it from the stack of hooks if more are present) + * + * @param entryPoint entry point for the hook to remove + * @returns removed(popped) hook + */ + removeHook(entryPoint: BasicHookName): Hook | undefined; + /** + * Remove a DOMPurify hook at a given entryPoint + * (pops it from the stack of hooks if more are present) + * + * @param entryPoint entry point for the hook to remove + * @returns removed(popped) hook + */ + removeHook(entryPoint: 'uponSanitizeElement'): UponSanitizeElementHook | undefined; + /** + * Remove a DOMPurify hook at a given entryPoint + * (pops it from the stack of hooks if more are present) + * + * @param entryPoint entry point for the hook to remove + * @returns removed(popped) hook + */ + removeHook(entryPoint: 'uponSanitizeAttribute'): UponSanitizeAttributeHook | undefined; + /** + * Removes all DOMPurify hooks at a given entryPoint + * + * @param entryPoint entry point for the hooks to remove + */ + removeHooks(entryPoint: HookName): void; + /** + * Removes all DOMPurify hooks. + */ + removeAllHooks(): void; +} +/** + * An element removed by DOMPurify. + */ +interface RemovedElement { + /** + * The element that was removed. + */ + element: Node; +} +/** + * An element removed by DOMPurify. + */ +interface RemovedAttribute { + /** + * The attribute that was removed. + */ + attribute: Attr | null; + /** + * The element that the attribute was removed. + */ + from: Node; +} +type BasicHookName = 'beforeSanitizeElements' | 'afterSanitizeElements' | 'beforeSanitizeAttributes' | 'afterSanitizeAttributes' | 'beforeSanitizeShadowDOM' | 'uponSanitizeShadowNode' | 'afterSanitizeShadowDOM'; +type UponSanitizeElementHookName = 'uponSanitizeElement'; +type UponSanitizeAttributeHookName = 'uponSanitizeAttribute'; +type HookName = BasicHookName | UponSanitizeElementHookName | UponSanitizeAttributeHookName; +type Hook = (this: DOMPurify, currentNode: Node, hookEvent: null, config: Config) => void; +type UponSanitizeElementHook = (this: DOMPurify, currentNode: Node, hookEvent: UponSanitizeElementHookEvent, config: Config) => void; +type UponSanitizeAttributeHook = (this: DOMPurify, currentNode: Node, hookEvent: UponSanitizeAttributeHookEvent, config: Config) => void; +interface UponSanitizeElementHookEvent { + tagName: string; + allowedTags: Record; +} +interface UponSanitizeAttributeHookEvent { + attrName: string; + attrValue: string; + keepAttr: boolean; + allowedAttributes: Record; + forceKeepAttr: boolean | undefined; +} +/** + * A `Window`-like object containing the properties and types that DOMPurify requires. + */ +type WindowLike = Pick & { + document?: Document; + MozNamedAttrMap?: typeof window.NamedNodeMap; + trustedTypes?: typeof window.trustedTypes; +}; + +export { type Config, type Hook, type HookName, type RemovedAttribute, type RemovedElement, type UponSanitizeAttributeHook, type UponSanitizeAttributeHookEvent, type UponSanitizeElementHook, type UponSanitizeElementHookEvent, type WindowLike, _default as default }; diff --git a/dist/purify.es.mjs b/dist/purify.es.mjs index 7a42ce635..fcbd05100 100644 --- a/dist/purify.es.mjs +++ b/dist/purify.es.mjs @@ -1,4 +1,4 @@ -/*! @license DOMPurify 3.1.7 | (c) Cure53 and other contributors | Released under the Apache license 2.0 and Mozilla Public License 2.0 | github.com/cure53/DOMPurify/blob/3.1.7/LICENSE */ +/*! @license DOMPurify 3.2.0 | (c) Cure53 and other contributors | Released under the Apache license 2.0 and Mozilla Public License 2.0 | github.com/cure53/DOMPurify/blob/3.2.0/LICENSE */ const { entries, @@ -48,12 +48,11 @@ const stringTrim = unapply(String.prototype.trim); const objectHasOwnProperty = unapply(Object.prototype.hasOwnProperty); const regExpTest = unapply(RegExp.prototype.test); const typeErrorCreate = unconstruct(TypeError); - /** * Creates a new function that calls the given function with a specified thisArg and arguments. * - * @param {Function} func - The function to be wrapped and called. - * @returns {Function} A new function that calls the given function with a specified thisArg and arguments. + * @param func - The function to be wrapped and called. + * @returns A new function that calls the given function with a specified thisArg and arguments. */ function unapply(func) { return function (thisArg) { @@ -63,12 +62,11 @@ function unapply(func) { return apply(func, thisArg, args); }; } - /** * Creates a new function that constructs an instance of the given constructor function with the provided arguments. * - * @param {Function} func - The constructor function to be wrapped and called. - * @returns {Function} A new function that constructs an instance of the given constructor function with the provided arguments. + * @param func - The constructor function to be wrapped and called. + * @returns A new function that constructs an instance of the given constructor function with the provided arguments. */ function unconstruct(func) { return function () { @@ -78,14 +76,13 @@ function unconstruct(func) { return construct(func, args); }; } - /** * Add properties to a lookup table * - * @param {Object} set - The set to which elements will be added. - * @param {Array} array - The array containing elements to be added to the set. - * @param {Function} transformCaseFunc - An optional function to transform the case of each element before adding to the set. - * @returns {Object} The modified set with added elements. + * @param set - The set to which elements will be added. + * @param array - The array containing elements to be added to the set. + * @param transformCaseFunc - An optional function to transform the case of each element before adding to the set. + * @returns The modified set with added elements. */ function addToSet(set, array) { let transformCaseFunc = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : stringToLowerCase; @@ -112,12 +109,11 @@ function addToSet(set, array) { } return set; } - /** * Clean up an array to harden against CSPP * - * @param {Array} array - The array to be cleaned. - * @returns {Array} The cleaned version of the array + * @param array - The array to be cleaned. + * @returns The cleaned version of the array */ function cleanArray(array) { for (let index = 0; index < array.length; index++) { @@ -128,12 +124,11 @@ function cleanArray(array) { } return array; } - /** * Shallow clone an object * - * @param {Object} object - The object to be cloned. - * @returns {Object} A new object that copies the original. + * @param object - The object to be cloned. + * @returns A new object that copies the original. */ function clone(object) { const newObject = create(null); @@ -151,13 +146,12 @@ function clone(object) { } return newObject; } - /** * This method automatically checks if the prop is function or getter and behaves accordingly. * - * @param {Object} object - The object to look up the getter function in its prototype chain. - * @param {String} prop - The property name for which to find the getter function. - * @returns {Function} The getter function found in the prototype chain or a fallback function. + * @param object - The object to look up the getter function in its prototype chain. + * @param prop - The property name for which to find the getter function. + * @returns The getter function found in the prototype chain or a fallback function. */ function lookupGetter(object, prop) { while (object !== null) { @@ -179,18 +173,15 @@ function lookupGetter(object, prop) { } const html$1 = freeze(['a', 'abbr', 'acronym', 'address', 'area', 'article', 'aside', 'audio', 'b', 'bdi', 'bdo', 'big', 'blink', 'blockquote', 'body', 'br', 'button', 'canvas', 'caption', 'center', 'cite', 'code', 'col', 'colgroup', 'content', 'data', 'datalist', 'dd', 'decorator', 'del', 'details', 'dfn', 'dialog', 'dir', 'div', 'dl', 'dt', 'element', 'em', 'fieldset', 'figcaption', 'figure', 'font', 'footer', 'form', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'head', 'header', 'hgroup', 'hr', 'html', 'i', 'img', 'input', 'ins', 'kbd', 'label', 'legend', 'li', 'main', 'map', 'mark', 'marquee', 'menu', 'menuitem', 'meter', 'nav', 'nobr', 'ol', 'optgroup', 'option', 'output', 'p', 'picture', 'pre', 'progress', 'q', 'rp', 'rt', 'ruby', 's', 'samp', 'section', 'select', 'shadow', 'small', 'source', 'spacer', 'span', 'strike', 'strong', 'style', 'sub', 'summary', 'sup', 'table', 'tbody', 'td', 'template', 'textarea', 'tfoot', 'th', 'thead', 'time', 'tr', 'track', 'tt', 'u', 'ul', 'var', 'video', 'wbr']); - // SVG const svg$1 = freeze(['svg', 'a', 'altglyph', 'altglyphdef', 'altglyphitem', 'animatecolor', 'animatemotion', 'animatetransform', 'circle', 'clippath', 'defs', 'desc', 'ellipse', 'filter', 'font', 'g', 'glyph', 'glyphref', 'hkern', 'image', 'line', 'lineargradient', 'marker', 'mask', 'metadata', 'mpath', 'path', 'pattern', 'polygon', 'polyline', 'radialgradient', 'rect', 'stop', 'style', 'switch', 'symbol', 'text', 'textpath', 'title', 'tref', 'tspan', 'view', 'vkern']); const svgFilters = freeze(['feBlend', 'feColorMatrix', 'feComponentTransfer', 'feComposite', 'feConvolveMatrix', 'feDiffuseLighting', 'feDisplacementMap', 'feDistantLight', 'feDropShadow', 'feFlood', 'feFuncA', 'feFuncB', 'feFuncG', 'feFuncR', 'feGaussianBlur', 'feImage', 'feMerge', 'feMergeNode', 'feMorphology', 'feOffset', 'fePointLight', 'feSpecularLighting', 'feSpotLight', 'feTile', 'feTurbulence']); - // List of SVG elements that are disallowed by default. // We still need to know them so that we can do namespace // checks properly in case one wants to add them to // allow-list. const svgDisallowed = freeze(['animate', 'color-profile', 'cursor', 'discard', 'font-face', 'font-face-format', 'font-face-name', 'font-face-src', 'font-face-uri', 'foreignobject', 'hatch', 'hatchpath', 'mesh', 'meshgradient', 'meshpatch', 'meshrow', 'missing-glyph', 'script', 'set', 'solidcolor', 'unknown', 'use']); const mathMl$1 = freeze(['math', 'menclose', 'merror', 'mfenced', 'mfrac', 'mglyph', 'mi', 'mlabeledtr', 'mmultiscripts', 'mn', 'mo', 'mover', 'mpadded', 'mphantom', 'mroot', 'mrow', 'ms', 'mspace', 'msqrt', 'mstyle', 'msub', 'msup', 'msubsup', 'mtable', 'mtd', 'mtext', 'mtr', 'munder', 'munderover', 'mprescripts']); - // Similarly to SVG, we want to know all MathML elements, // even those that we disallow by default. const mathMlDisallowed = freeze(['maction', 'maligngroup', 'malignmark', 'mlongdiv', 'mscarries', 'mscarry', 'msgroup', 'mstack', 'msline', 'msrow', 'semantics', 'annotation', 'annotation-xml', 'mprescripts', 'none']); @@ -217,18 +208,19 @@ const CUSTOM_ELEMENT = seal(/^[a-z][.\w]*(-[.\w]+)+$/i); var EXPRESSIONS = /*#__PURE__*/Object.freeze({ __proto__: null, - MUSTACHE_EXPR: MUSTACHE_EXPR, - ERB_EXPR: ERB_EXPR, - TMPLIT_EXPR: TMPLIT_EXPR, - DATA_ATTR: DATA_ATTR, ARIA_ATTR: ARIA_ATTR, - IS_ALLOWED_URI: IS_ALLOWED_URI, - IS_SCRIPT_OR_DATA: IS_SCRIPT_OR_DATA, ATTR_WHITESPACE: ATTR_WHITESPACE, + CUSTOM_ELEMENT: CUSTOM_ELEMENT, + DATA_ATTR: DATA_ATTR, DOCTYPE_NAME: DOCTYPE_NAME, - CUSTOM_ELEMENT: CUSTOM_ELEMENT + ERB_EXPR: ERB_EXPR, + IS_ALLOWED_URI: IS_ALLOWED_URI, + IS_SCRIPT_OR_DATA: IS_SCRIPT_OR_DATA, + MUSTACHE_EXPR: MUSTACHE_EXPR, + TMPLIT_EXPR: TMPLIT_EXPR }); +/* eslint-disable @typescript-eslint/indent */ // https://developer.mozilla.org/en-US/docs/Web/API/Node/nodeType const NODE_TYPE = { element: 1, @@ -249,20 +241,18 @@ const NODE_TYPE = { const getGlobal = function getGlobal() { return typeof window === 'undefined' ? null : window; }; - /** * Creates a no-op policy for internal use only. * Don't export this function outside this module! - * @param {TrustedTypePolicyFactory} trustedTypes The policy factory. - * @param {HTMLScriptElement} purifyHostElement The Script element used to load DOMPurify (to determine policy name suffix). - * @return {TrustedTypePolicy} The policy created (or null, if Trusted Types + * @param trustedTypes The policy factory. + * @param purifyHostElement The Script element used to load DOMPurify (to determine policy name suffix). + * @return The policy created (or null, if Trusted Types * are not supported or creating the policy failed). */ const _createTrustedTypesPolicy = function _createTrustedTypesPolicy(trustedTypes, purifyHostElement) { if (typeof trustedTypes !== 'object' || typeof trustedTypes.createPolicy !== 'function') { return null; } - // Allow the callers to control the unique policy name // by adding a data-tt-policy-suffix to the script element with the DOMPurify. // Policy creation with duplicate names throws in Trusted Types. @@ -292,17 +282,7 @@ const _createTrustedTypesPolicy = function _createTrustedTypesPolicy(trustedType function createDOMPurify() { let window = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : getGlobal(); const DOMPurify = root => createDOMPurify(root); - - /** - * Version label, exposed for easier checks - * if DOMPurify is up to date or not - */ - DOMPurify.version = '3.1.7'; - - /** - * Array of elements that DOMPurify removed during sanitation. - * Empty if nothing was removed. - */ + DOMPurify.version = '3.2.0'; DOMPurify.removed = []; if (!window || !window.document || window.document.nodeType !== NODE_TYPE.document) { // Not running in a browser, provide a factory function @@ -332,7 +312,6 @@ function createDOMPurify() { const getNextSibling = lookupGetter(ElementPrototype, 'nextSibling'); const getChildNodes = lookupGetter(ElementPrototype, 'childNodes'); const getParentNode = lookupGetter(ElementPrototype, 'parentNode'); - // As per issue #47, the web-components registry is inherited by a // new document created via createHTMLDocument. As per the spec // (http://w3c.github.io/webcomponents/spec/custom/#creating-and-passing-registries) @@ -357,7 +336,6 @@ function createDOMPurify() { importNode } = originalDocument; let hooks = {}; - /** * Expose whether this browser supports running the full DOMPurify. */ @@ -375,22 +353,18 @@ function createDOMPurify() { let { IS_ALLOWED_URI: IS_ALLOWED_URI$1 } = EXPRESSIONS; - /** * We consider the elements and attributes below to be safe. Ideally * don't add any new ones but feel free to remove unwanted ones. */ - /* allowed element names */ let ALLOWED_TAGS = null; const DEFAULT_ALLOWED_TAGS = addToSet({}, [...html$1, ...svg$1, ...svgFilters, ...mathMl$1, ...text]); - /* Allowed attribute names */ let ALLOWED_ATTR = null; const DEFAULT_ALLOWED_ATTR = addToSet({}, [...html, ...svg, ...mathMl, ...xml]); - /* - * Configure how DOMPUrify should handle custom elements and their attributes as well as customized built-in elements. + * Configure how DOMPurify should handle custom elements and their attributes as well as customized built-in elements. * @property {RegExp|Function|null} tagNameCheck one of [null, regexPattern, predicate]. Default: `null` (disallow any custom elements) * @property {RegExp|Function|null} attributeNameCheck one of [null, regexPattern, predicate]. Default: `null` (disallow any attributes not on the allow list) * @property {boolean} allowCustomizedBuiltInElements allow custom elements derived from built-ins if they pass CUSTOM_ELEMENT_HANDLING.tagNameCheck. Default: `false`. @@ -415,65 +389,49 @@ function createDOMPurify() { value: false } })); - /* Explicitly forbidden tags (overrides ALLOWED_TAGS/ADD_TAGS) */ let FORBID_TAGS = null; - /* Explicitly forbidden attributes (overrides ALLOWED_ATTR/ADD_ATTR) */ let FORBID_ATTR = null; - /* Decide if ARIA attributes are okay */ let ALLOW_ARIA_ATTR = true; - /* Decide if custom data attributes are okay */ let ALLOW_DATA_ATTR = true; - /* Decide if unknown protocols are okay */ let ALLOW_UNKNOWN_PROTOCOLS = false; - /* Decide if self-closing tags in attributes are allowed. * Usually removed due to a mXSS issue in jQuery 3.0 */ let ALLOW_SELF_CLOSE_IN_ATTR = true; - /* Output should be safe for common template engines. * This means, DOMPurify removes data attributes, mustaches and ERB */ let SAFE_FOR_TEMPLATES = false; - /* Output should be safe even for XML used within HTML and alike. * This means, DOMPurify removes comments when containing risky content. */ let SAFE_FOR_XML = true; - /* Decide if document with ... should be returned */ let WHOLE_DOCUMENT = false; - /* Track whether config is already set on this instance of DOMPurify. */ let SET_CONFIG = false; - /* Decide if all elements (e.g. style, script) must be children of * document.body. By default, browsers might move them to document.head */ let FORCE_BODY = false; - /* Decide if a DOM `HTMLBodyElement` should be returned, instead of a html * string (or a TrustedHTML object if Trusted Types are supported). * If `WHOLE_DOCUMENT` is enabled a `HTMLHtmlElement` will be returned instead */ let RETURN_DOM = false; - /* Decide if a DOM `DocumentFragment` should be returned, instead of a html * string (or a TrustedHTML object if Trusted Types are supported) */ let RETURN_DOM_FRAGMENT = false; - /* Try to return a Trusted Type object instead of a string, return a string in * case Trusted Types are not supported */ let RETURN_TRUSTED_TYPE = false; - /* Output should be free from DOM clobbering attacks? * This sanitizes markups named with colliding, clobberable built-in DOM APIs. */ let SANITIZE_DOM = true; - /* Achieve full DOM Clobbering protection by isolating the namespace of named * properties and JS variables, mitigating attacks that abuse the HTML/DOM spec rules. * @@ -489,25 +447,19 @@ function createDOMPurify() { */ let SANITIZE_NAMED_PROPS = false; const SANITIZE_NAMED_PROPS_PREFIX = 'user-content-'; - /* Keep element content when removing element? */ let KEEP_CONTENT = true; - /* If a `Node` is passed to sanitize(), then performs sanitization in-place instead * of importing it into a new Document and returning a sanitized copy */ let IN_PLACE = false; - /* Allow usage of profiles like html, svg and mathMl */ let USE_PROFILES = {}; - /* Tags to ignore content of when KEEP_CONTENT is true */ let FORBID_CONTENTS = null; const DEFAULT_FORBID_CONTENTS = addToSet({}, ['annotation-xml', 'audio', 'colgroup', 'desc', 'foreignobject', 'head', 'iframe', 'math', 'mi', 'mn', 'mo', 'ms', 'mtext', 'noembed', 'noframes', 'noscript', 'plaintext', 'script', 'style', 'svg', 'template', 'thead', 'title', 'video', 'xmp']); - /* Tags that are safe for data: URIs */ let DATA_URI_TAGS = null; const DEFAULT_DATA_URI_TAGS = addToSet({}, ['audio', 'video', 'img', 'source', 'image', 'track']); - /* Attributes safe for values like "javascript:" */ let URI_SAFE_ATTRIBUTES = null; const DEFAULT_URI_SAFE_ATTRIBUTES = addToSet({}, ['alt', 'class', 'for', 'id', 'label', 'name', 'pattern', 'placeholder', 'role', 'summary', 'title', 'value', 'style', 'xmlns']); @@ -517,32 +469,33 @@ function createDOMPurify() { /* Document namespace */ let NAMESPACE = HTML_NAMESPACE; let IS_EMPTY_INPUT = false; - /* Allowed XHTML+XML namespaces */ let ALLOWED_NAMESPACES = null; const DEFAULT_ALLOWED_NAMESPACES = addToSet({}, [MATHML_NAMESPACE, SVG_NAMESPACE, HTML_NAMESPACE], stringToString); - + let MATHML_TEXT_INTEGRATION_POINTS = addToSet({}, ['mi', 'mo', 'mn', 'ms', 'mtext']); + let HTML_INTEGRATION_POINTS = addToSet({}, ['annotation-xml']); + // Certain elements are allowed in both SVG and HTML + // namespace. We need to specify them explicitly + // so that they don't get erroneously deleted from + // HTML namespace. + const COMMON_SVG_AND_HTML_ELEMENTS = addToSet({}, ['title', 'style', 'font', 'a', 'script']); /* Parsing of strict XHTML documents */ let PARSER_MEDIA_TYPE = null; const SUPPORTED_PARSER_MEDIA_TYPES = ['application/xhtml+xml', 'text/html']; const DEFAULT_PARSER_MEDIA_TYPE = 'text/html'; let transformCaseFunc = null; - /* Keep a reference to config to pass to hooks */ let CONFIG = null; - /* Ideally, do not touch anything below this line */ /* ______________________________________________ */ - const formElement = document.createElement('form'); const isRegexOrFunction = function isRegexOrFunction(testValue) { return testValue instanceof RegExp || testValue instanceof Function; }; - /** * _parseConfig * - * @param {Object} cfg optional config literal + * @param cfg optional config literal */ // eslint-disable-next-line complexity const _parseConfig = function _parseConfig() { @@ -550,39 +503,23 @@ function createDOMPurify() { if (CONFIG && CONFIG === cfg) { return; } - /* Shield configuration object from tampering */ if (!cfg || typeof cfg !== 'object') { cfg = {}; } - /* Shield configuration object from prototype pollution */ cfg = clone(cfg); PARSER_MEDIA_TYPE = // eslint-disable-next-line unicorn/prefer-includes SUPPORTED_PARSER_MEDIA_TYPES.indexOf(cfg.PARSER_MEDIA_TYPE) === -1 ? DEFAULT_PARSER_MEDIA_TYPE : cfg.PARSER_MEDIA_TYPE; - // HTML tags and attributes are not case-sensitive, converting to lowercase. Keeping XHTML as is. transformCaseFunc = PARSER_MEDIA_TYPE === 'application/xhtml+xml' ? stringToString : stringToLowerCase; - /* Set configuration parameters */ ALLOWED_TAGS = objectHasOwnProperty(cfg, 'ALLOWED_TAGS') ? addToSet({}, cfg.ALLOWED_TAGS, transformCaseFunc) : DEFAULT_ALLOWED_TAGS; ALLOWED_ATTR = objectHasOwnProperty(cfg, 'ALLOWED_ATTR') ? addToSet({}, cfg.ALLOWED_ATTR, transformCaseFunc) : DEFAULT_ALLOWED_ATTR; ALLOWED_NAMESPACES = objectHasOwnProperty(cfg, 'ALLOWED_NAMESPACES') ? addToSet({}, cfg.ALLOWED_NAMESPACES, stringToString) : DEFAULT_ALLOWED_NAMESPACES; - URI_SAFE_ATTRIBUTES = objectHasOwnProperty(cfg, 'ADD_URI_SAFE_ATTR') ? addToSet(clone(DEFAULT_URI_SAFE_ATTRIBUTES), - // eslint-disable-line indent - cfg.ADD_URI_SAFE_ATTR, - // eslint-disable-line indent - transformCaseFunc // eslint-disable-line indent - ) // eslint-disable-line indent - : DEFAULT_URI_SAFE_ATTRIBUTES; - DATA_URI_TAGS = objectHasOwnProperty(cfg, 'ADD_DATA_URI_TAGS') ? addToSet(clone(DEFAULT_DATA_URI_TAGS), - // eslint-disable-line indent - cfg.ADD_DATA_URI_TAGS, - // eslint-disable-line indent - transformCaseFunc // eslint-disable-line indent - ) // eslint-disable-line indent - : DEFAULT_DATA_URI_TAGS; + URI_SAFE_ATTRIBUTES = objectHasOwnProperty(cfg, 'ADD_URI_SAFE_ATTR') ? addToSet(clone(DEFAULT_URI_SAFE_ATTRIBUTES), cfg.ADD_URI_SAFE_ATTR, transformCaseFunc) : DEFAULT_URI_SAFE_ATTRIBUTES; + DATA_URI_TAGS = objectHasOwnProperty(cfg, 'ADD_DATA_URI_TAGS') ? addToSet(clone(DEFAULT_DATA_URI_TAGS), cfg.ADD_DATA_URI_TAGS, transformCaseFunc) : DEFAULT_DATA_URI_TAGS; FORBID_CONTENTS = objectHasOwnProperty(cfg, 'FORBID_CONTENTS') ? addToSet({}, cfg.FORBID_CONTENTS, transformCaseFunc) : DEFAULT_FORBID_CONTENTS; FORBID_TAGS = objectHasOwnProperty(cfg, 'FORBID_TAGS') ? addToSet({}, cfg.FORBID_TAGS, transformCaseFunc) : {}; FORBID_ATTR = objectHasOwnProperty(cfg, 'FORBID_ATTR') ? addToSet({}, cfg.FORBID_ATTR, transformCaseFunc) : {}; @@ -604,6 +541,8 @@ function createDOMPurify() { IN_PLACE = cfg.IN_PLACE || false; // Default false IS_ALLOWED_URI$1 = cfg.ALLOWED_URI_REGEXP || IS_ALLOWED_URI; NAMESPACE = cfg.NAMESPACE || HTML_NAMESPACE; + MATHML_TEXT_INTEGRATION_POINTS = cfg.MATHML_TEXT_INTEGRATION_POINTS || MATHML_TEXT_INTEGRATION_POINTS; + HTML_INTEGRATION_POINTS = cfg.HTML_INTEGRATION_POINTS || HTML_INTEGRATION_POINTS; CUSTOM_ELEMENT_HANDLING = cfg.CUSTOM_ELEMENT_HANDLING || {}; if (cfg.CUSTOM_ELEMENT_HANDLING && isRegexOrFunction(cfg.CUSTOM_ELEMENT_HANDLING.tagNameCheck)) { CUSTOM_ELEMENT_HANDLING.tagNameCheck = cfg.CUSTOM_ELEMENT_HANDLING.tagNameCheck; @@ -620,7 +559,6 @@ function createDOMPurify() { if (RETURN_DOM_FRAGMENT) { RETURN_DOM = true; } - /* Parse profile info */ if (USE_PROFILES) { ALLOWED_TAGS = addToSet({}, text); @@ -645,7 +583,6 @@ function createDOMPurify() { addToSet(ALLOWED_ATTR, xml); } } - /* Merge configuration parameters */ if (cfg.ADD_TAGS) { if (ALLOWED_TAGS === DEFAULT_ALLOWED_TAGS) { @@ -668,17 +605,14 @@ function createDOMPurify() { } addToSet(FORBID_CONTENTS, cfg.FORBID_CONTENTS, transformCaseFunc); } - /* Add #text in case KEEP_CONTENT is set to true */ if (KEEP_CONTENT) { ALLOWED_TAGS['#text'] = true; } - /* Add html, head and body to ALLOWED_TAGS in case WHOLE_DOCUMENT is true */ if (WHOLE_DOCUMENT) { addToSet(ALLOWED_TAGS, ['html', 'head', 'body']); } - /* Add tbody to ALLOWED_TAGS in case tables are permitted, see #286, #365 */ if (ALLOWED_TAGS.table) { addToSet(ALLOWED_TAGS, ['tbody']); @@ -691,10 +625,8 @@ function createDOMPurify() { if (typeof cfg.TRUSTED_TYPES_POLICY.createScriptURL !== 'function') { throw typeErrorCreate('TRUSTED_TYPES_POLICY configuration option must provide a "createScriptURL" hook.'); } - // Overwrite existing TrustedTypes policy. trustedTypesPolicy = cfg.TRUSTED_TYPES_POLICY; - // Sign local variables required by `sanitize`. emptyHTML = trustedTypesPolicy.createHTML(''); } else { @@ -702,13 +634,11 @@ function createDOMPurify() { if (trustedTypesPolicy === undefined) { trustedTypesPolicy = _createTrustedTypesPolicy(trustedTypes, currentScript); } - // If creating the internal policy succeeded sign internal variables. if (trustedTypesPolicy !== null && typeof emptyHTML === 'string') { emptyHTML = trustedTypesPolicy.createHTML(''); } } - // Prevent further manipulation of configuration. // Not available in IE8, Safari 5, etc. if (freeze) { @@ -716,30 +646,19 @@ function createDOMPurify() { } CONFIG = cfg; }; - const MATHML_TEXT_INTEGRATION_POINTS = addToSet({}, ['mi', 'mo', 'mn', 'ms', 'mtext']); - const HTML_INTEGRATION_POINTS = addToSet({}, ['annotation-xml']); - - // Certain elements are allowed in both SVG and HTML - // namespace. We need to specify them explicitly - // so that they don't get erroneously deleted from - // HTML namespace. - const COMMON_SVG_AND_HTML_ELEMENTS = addToSet({}, ['title', 'style', 'font', 'a', 'script']); - /* Keep track of all possible SVG and MathML tags * so that we can perform the namespace checks * correctly. */ const ALL_SVG_TAGS = addToSet({}, [...svg$1, ...svgFilters, ...svgDisallowed]); const ALL_MATHML_TAGS = addToSet({}, [...mathMl$1, ...mathMlDisallowed]); - /** - * @param {Element} element a DOM element whose namespace is being checked - * @returns {boolean} Return false if the element has a + * @param element a DOM element whose namespace is being checked + * @returns Return false if the element has a * namespace that a spec-compliant parser would never * return. Return true otherwise. */ const _checkValidNamespace = function _checkValidNamespace(element) { let parent = getParentNode(element); - // In JSDOM, if we're inside shadow DOM, then parentNode // can be null. We just simulate parent in this case. if (!parent || !parent.tagName) { @@ -760,14 +679,12 @@ function createDOMPurify() { if (parent.namespaceURI === HTML_NAMESPACE) { return tagName === 'svg'; } - // The only way to switch from MathML to SVG is via` // svg if parent is either or MathML // text integration points. if (parent.namespaceURI === MATHML_NAMESPACE) { return tagName === 'svg' && (parentTagName === 'annotation-xml' || MATHML_TEXT_INTEGRATION_POINTS[parentTagName]); } - // We only allow elements that are defined in SVG // spec. All others are disallowed in SVG namespace. return Boolean(ALL_SVG_TAGS[tagName]); @@ -779,13 +696,11 @@ function createDOMPurify() { if (parent.namespaceURI === HTML_NAMESPACE) { return tagName === 'math'; } - // The only way to switch from SVG to MathML is via // and HTML integration points if (parent.namespaceURI === SVG_NAMESPACE) { return tagName === 'math' && HTML_INTEGRATION_POINTS[parentTagName]; } - // We only allow elements that are defined in MathML // spec. All others are disallowed in MathML namespace. return Boolean(ALL_MATHML_TAGS[tagName]); @@ -800,28 +715,24 @@ function createDOMPurify() { if (parent.namespaceURI === MATHML_NAMESPACE && !MATHML_TEXT_INTEGRATION_POINTS[parentTagName]) { return false; } - // We disallow tags that are specific for MathML // or SVG and should never appear in HTML namespace return !ALL_MATHML_TAGS[tagName] && (COMMON_SVG_AND_HTML_ELEMENTS[tagName] || !ALL_SVG_TAGS[tagName]); } - // For XHTML and XML documents that support custom namespaces if (PARSER_MEDIA_TYPE === 'application/xhtml+xml' && ALLOWED_NAMESPACES[element.namespaceURI]) { return true; } - // The code should never reach this place (this means // that the element somehow got namespace that is not // HTML, SVG, MathML or allowed via ALLOWED_NAMESPACES). // Return false just in case. return false; }; - /** * _forceRemove * - * @param {Node} node a DOM node + * @param node a DOM node */ const _forceRemove = function _forceRemove(node) { arrayPush(DOMPurify.removed, { @@ -834,46 +745,43 @@ function createDOMPurify() { remove(node); } }; - /** * _removeAttribute * - * @param {String} name an Attribute name - * @param {Node} node a DOM node + * @param name an Attribute name + * @param element a DOM node */ - const _removeAttribute = function _removeAttribute(name, node) { + const _removeAttribute = function _removeAttribute(name, element) { try { arrayPush(DOMPurify.removed, { - attribute: node.getAttributeNode(name), - from: node + attribute: element.getAttributeNode(name), + from: element }); } catch (_) { arrayPush(DOMPurify.removed, { attribute: null, - from: node + from: element }); } - node.removeAttribute(name); - + element.removeAttribute(name); // We void attribute values for unremovable "is"" attributes if (name === 'is' && !ALLOWED_ATTR[name]) { if (RETURN_DOM || RETURN_DOM_FRAGMENT) { try { - _forceRemove(node); + _forceRemove(element); } catch (_) {} } else { try { - node.setAttribute(name, ''); + element.setAttribute(name, ''); } catch (_) {} } } }; - /** * _initDocument * - * @param {String} dirty a string of dirty markup - * @return {Document} a DOM, filled with the dirty markup + * @param dirty - a string of dirty markup + * @return a DOM, filled with the dirty markup */ const _initDocument = function _initDocument(dirty) { /* Create a HTML document */ @@ -900,7 +808,6 @@ function createDOMPurify() { doc = new DOMParser().parseFromString(dirtyPayload, PARSER_MEDIA_TYPE); } catch (_) {} } - /* Use createHTMLDocument in case DOMParser is not available */ if (!doc || !doc.documentElement) { doc = implementation.createDocument(NAMESPACE, 'template', null); @@ -914,112 +821,89 @@ function createDOMPurify() { if (dirty && leadingWhitespace) { body.insertBefore(document.createTextNode(leadingWhitespace), body.childNodes[0] || null); } - /* Work on whole document or just its body */ if (NAMESPACE === HTML_NAMESPACE) { return getElementsByTagName.call(doc, WHOLE_DOCUMENT ? 'html' : 'body')[0]; } return WHOLE_DOCUMENT ? doc.documentElement : body; }; - /** * Creates a NodeIterator object that you can use to traverse filtered lists of nodes or elements in a document. * - * @param {Node} root The root element or node to start traversing on. - * @return {NodeIterator} The created NodeIterator + * @param root The root element or node to start traversing on. + * @return The created NodeIterator */ const _createNodeIterator = function _createNodeIterator(root) { return createNodeIterator.call(root.ownerDocument || root, root, // eslint-disable-next-line no-bitwise NodeFilter.SHOW_ELEMENT | NodeFilter.SHOW_COMMENT | NodeFilter.SHOW_TEXT | NodeFilter.SHOW_PROCESSING_INSTRUCTION | NodeFilter.SHOW_CDATA_SECTION, null); }; - /** * _isClobbered * - * @param {Node} elm element to check for clobbering attacks - * @return {Boolean} true if clobbered, false if safe + * @param element element to check for clobbering attacks + * @return true if clobbered, false if safe */ - const _isClobbered = function _isClobbered(elm) { - return elm instanceof HTMLFormElement && (typeof elm.nodeName !== 'string' || typeof elm.textContent !== 'string' || typeof elm.removeChild !== 'function' || !(elm.attributes instanceof NamedNodeMap) || typeof elm.removeAttribute !== 'function' || typeof elm.setAttribute !== 'function' || typeof elm.namespaceURI !== 'string' || typeof elm.insertBefore !== 'function' || typeof elm.hasChildNodes !== 'function'); + const _isClobbered = function _isClobbered(element) { + return element instanceof HTMLFormElement && (typeof element.nodeName !== 'string' || typeof element.textContent !== 'string' || typeof element.removeChild !== 'function' || !(element.attributes instanceof NamedNodeMap) || typeof element.removeAttribute !== 'function' || typeof element.setAttribute !== 'function' || typeof element.namespaceURI !== 'string' || typeof element.insertBefore !== 'function' || typeof element.hasChildNodes !== 'function'); }; - /** * Checks whether the given object is a DOM node. * - * @param {Node} object object to check whether it's a DOM node - * @return {Boolean} true is object is a DOM node + * @param value object to check whether it's a DOM node + * @return true is object is a DOM node */ - const _isNode = function _isNode(object) { - return typeof Node === 'function' && object instanceof Node; + const _isNode = function _isNode(value) { + return typeof Node === 'function' && value instanceof Node; }; - - /** - * _executeHook - * Execute user configurable hooks - * - * @param {String} entryPoint Name of the hook's entry point - * @param {Node} currentNode node to work on with the hook - * @param {Object} data additional hook parameters - */ - const _executeHook = function _executeHook(entryPoint, currentNode, data) { + function _executeHook(entryPoint, currentNode, data) { if (!hooks[entryPoint]) { return; } arrayForEach(hooks[entryPoint], hook => { hook.call(DOMPurify, currentNode, data, CONFIG); }); - }; - + } /** * _sanitizeElements * * @protect nodeName * @protect textContent * @protect removeChild - * - * @param {Node} currentNode to check for permission to exist - * @return {Boolean} true if node was killed, false if left alive + * @param currentNode to check for permission to exist + * @return true if node was killed, false if left alive */ const _sanitizeElements = function _sanitizeElements(currentNode) { let content = null; - /* Execute a hook if present */ _executeHook('beforeSanitizeElements', currentNode, null); - /* Check if element is clobbered or can clobber */ if (_isClobbered(currentNode)) { _forceRemove(currentNode); return true; } - /* Now let's check the element's type and name */ const tagName = transformCaseFunc(currentNode.nodeName); - /* Execute a hook if present */ _executeHook('uponSanitizeElement', currentNode, { tagName, allowedTags: ALLOWED_TAGS }); - /* Detect mXSS attempts abusing namespace confusion */ if (currentNode.hasChildNodes() && !_isNode(currentNode.firstElementChild) && regExpTest(/<[/\w]/g, currentNode.innerHTML) && regExpTest(/<[/\w]/g, currentNode.textContent)) { _forceRemove(currentNode); return true; } - /* Remove any occurrence of processing instructions */ if (currentNode.nodeType === NODE_TYPE.progressingInstruction) { _forceRemove(currentNode); return true; } - /* Remove any kind of possibly harmful comments */ if (SAFE_FOR_XML && currentNode.nodeType === NODE_TYPE.comment && regExpTest(/<[/\w]/g, currentNode.data)) { _forceRemove(currentNode); return true; } - /* Remove element if anything forbids its presence */ if (!ALLOWED_TAGS[tagName] || FORBID_TAGS[tagName]) { /* Check if we have a custom element to handle */ @@ -1031,7 +915,6 @@ function createDOMPurify() { return false; } } - /* Keep content except for bad-listed elements */ if (KEEP_CONTENT && !FORBID_CONTENTS[tagName]) { const parentNode = getParentNode(currentNode) || currentNode.parentNode; @@ -1048,19 +931,16 @@ function createDOMPurify() { _forceRemove(currentNode); return true; } - /* Check whether element has a valid namespace */ if (currentNode instanceof Element && !_checkValidNamespace(currentNode)) { _forceRemove(currentNode); return true; } - /* Make sure that older browsers don't get fallback-tag mXSS */ if ((tagName === 'noscript' || tagName === 'noembed' || tagName === 'noframes') && regExpTest(/<\/no(script|embed|frames)/i, currentNode.innerHTML)) { _forceRemove(currentNode); return true; } - /* Sanitize element content to be template-safe */ if (SAFE_FOR_TEMPLATES && currentNode.nodeType === NODE_TYPE.text) { /* Get the element's text content */ @@ -1075,19 +955,17 @@ function createDOMPurify() { currentNode.textContent = content; } } - /* Execute a hook if present */ _executeHook('afterSanitizeElements', currentNode, null); return false; }; - /** * _isValidAttribute * - * @param {string} lcTag Lowercase tag name of containing element. - * @param {string} lcName Lowercase attribute name. - * @param {string} value Attribute value. - * @return {Boolean} Returns true if `value` is valid, otherwise false. + * @param lcTag Lowercase tag name of containing element. + * @param lcName Lowercase attribute name. + * @param value Attribute value. + * @return Returns true if `value` is valid, otherwise false. */ // eslint-disable-next-line complexity const _isValidAttribute = function _isValidAttribute(lcTag, lcName, value) { @@ -1095,7 +973,6 @@ function createDOMPurify() { if (SANITIZE_DOM && (lcName === 'id' || lcName === 'name') && (value in document || value in formElement)) { return false; } - /* Allow valid data-* attributes: At least one character after "-" (https://html.spec.whatwg.org/multipage/dom.html#embedding-custom-non-visible-data-with-the-data-*-attributes) XML-compatible (https://html.spec.whatwg.org/multipage/infrastructure.html#xml-compatible and http://www.w3.org/TR/xml/#d0e804) @@ -1117,19 +994,17 @@ function createDOMPurify() { } else ; return true; }; - /** * _isBasicCustomElement * checks if at least one dash is included in tagName, and it's not the first char * for more sophisticated checking see https://github.com/sindresorhus/validate-element-name * - * @param {string} tagName name of the tag of the node to sanitize - * @returns {boolean} Returns true if the tag name meets the basic criteria for a custom element, otherwise false. + * @param tagName name of the tag of the node to sanitize + * @returns Returns true if the tag name meets the basic criteria for a custom element, otherwise false. */ const _isBasicCustomElement = function _isBasicCustomElement(tagName) { return tagName !== 'annotation-xml' && stringMatch(tagName, CUSTOM_ELEMENT); }; - /** * _sanitizeAttributes * @@ -1138,7 +1013,7 @@ function createDOMPurify() { * @protect removeAttribute * @protect setAttribute * - * @param {Node} currentNode to sanitize + * @param currentNode to sanitize */ const _sanitizeAttributes = function _sanitizeAttributes(currentNode) { /* Execute a hook if present */ @@ -1146,7 +1021,6 @@ function createDOMPurify() { const { attributes } = currentNode; - /* Check if we have attributes; if not we might have a text node */ if (!attributes) { return; @@ -1155,10 +1029,10 @@ function createDOMPurify() { attrName: '', attrValue: '', keepAttr: true, - allowedAttributes: ALLOWED_ATTR + allowedAttributes: ALLOWED_ATTR, + forceKeepAttr: undefined }; let l = attributes.length; - /* Go backwards over all attributes; safely remove bad ones */ while (l--) { const attr = attributes[l]; @@ -1169,7 +1043,6 @@ function createDOMPurify() { } = attr; const lcName = transformCaseFunc(name); let value = name === 'value' ? attrValue : stringTrim(attrValue); - /* Execute a hook if present */ hookEvent.attrName = lcName; hookEvent.attrValue = value; @@ -1177,56 +1050,46 @@ function createDOMPurify() { hookEvent.forceKeepAttr = undefined; // Allows developers to see this is a property they can set _executeHook('uponSanitizeAttribute', currentNode, hookEvent); value = hookEvent.attrValue; - + /* Full DOM Clobbering protection via namespace isolation, + * Prefix id and name attributes with `user-content-` + */ + if (SANITIZE_NAMED_PROPS && (lcName === 'id' || lcName === 'name')) { + // Remove the attribute with this value + _removeAttribute(name, currentNode); + // Prefix the value and later re-create the attribute with the sanitized value + value = SANITIZE_NAMED_PROPS_PREFIX + value; + } + /* Work around a security issue with comments inside attributes */ + if (SAFE_FOR_XML && regExpTest(/((--!?|])>)|<\/(style|title)/i, value)) { + _removeAttribute(name, currentNode); + continue; + } /* Did the hooks approve of the attribute? */ if (hookEvent.forceKeepAttr) { continue; } - /* Remove attribute */ _removeAttribute(name, currentNode); - /* Did the hooks approve of the attribute? */ if (!hookEvent.keepAttr) { continue; } - /* Work around a security issue in jQuery 3.0 */ if (!ALLOW_SELF_CLOSE_IN_ATTR && regExpTest(/\/>/i, value)) { _removeAttribute(name, currentNode); continue; } - /* Sanitize attribute content to be template-safe */ if (SAFE_FOR_TEMPLATES) { arrayForEach([MUSTACHE_EXPR, ERB_EXPR, TMPLIT_EXPR], expr => { value = stringReplace(value, expr, ' '); }); } - /* Is `value` valid for this attribute? */ const lcTag = transformCaseFunc(currentNode.nodeName); if (!_isValidAttribute(lcTag, lcName, value)) { continue; } - - /* Full DOM Clobbering protection via namespace isolation, - * Prefix id and name attributes with `user-content-` - */ - if (SANITIZE_NAMED_PROPS && (lcName === 'id' || lcName === 'name')) { - // Remove the attribute with this value - _removeAttribute(name, currentNode); - - // Prefix the value and later re-create the attribute with the sanitized value - value = SANITIZE_NAMED_PROPS_PREFIX + value; - } - - /* Work around a security issue with comments inside attributes */ - if (SAFE_FOR_XML && regExpTest(/((--!?|])>)|<\/(style|title)/i, value)) { - _removeAttribute(name, currentNode); - continue; - } - /* Handle attributes that require Trusted Types */ if (trustedTypesPolicy && typeof trustedTypes === 'object' && typeof trustedTypes.getAttributeType === 'function') { if (namespaceURI) ; else { @@ -1244,7 +1107,6 @@ function createDOMPurify() { } } } - /* Handle invalid data-* attribute set by try-catching it */ try { if (namespaceURI) { @@ -1260,51 +1122,36 @@ function createDOMPurify() { } } catch (_) {} } - /* Execute a hook if present */ _executeHook('afterSanitizeAttributes', currentNode, null); }; - /** * _sanitizeShadowDOM * - * @param {DocumentFragment} fragment to iterate over recursively + * @param fragment to iterate over recursively */ const _sanitizeShadowDOM = function _sanitizeShadowDOM(fragment) { let shadowNode = null; const shadowIterator = _createNodeIterator(fragment); - /* Execute a hook if present */ _executeHook('beforeSanitizeShadowDOM', fragment, null); while (shadowNode = shadowIterator.nextNode()) { /* Execute a hook if present */ _executeHook('uponSanitizeShadowNode', shadowNode, null); - /* Sanitize tags and elements */ if (_sanitizeElements(shadowNode)) { continue; } - /* Deep shadow DOM detected */ if (shadowNode.content instanceof DocumentFragment) { _sanitizeShadowDOM(shadowNode.content); } - /* Check attributes, sanitize if necessary */ _sanitizeAttributes(shadowNode); } - /* Execute a hook if present */ _executeHook('afterSanitizeShadowDOM', fragment, null); }; - - /** - * Sanitize - * Public method providing core sanitation functionality - * - * @param {String|Node} dirty string or DOM node - * @param {Object} cfg object - */ // eslint-disable-next-line complexity DOMPurify.sanitize = function (dirty) { let cfg = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {}; @@ -1319,7 +1166,6 @@ function createDOMPurify() { if (IS_EMPTY_INPUT) { dirty = ''; } - /* Stringify, in case dirty is an object */ if (typeof dirty !== 'string' && !_isNode(dirty)) { if (typeof dirty.toString === 'function') { @@ -1331,20 +1177,16 @@ function createDOMPurify() { throw typeErrorCreate('toString is not a function'); } } - /* Return dirty HTML if DOMPurify cannot run */ if (!DOMPurify.isSupported) { return dirty; } - /* Assign config vars */ if (!SET_CONFIG) { _parseConfig(cfg); } - /* Clean up removed elements */ DOMPurify.removed = []; - /* Check if dirty is correctly typed for IN_PLACE */ if (typeof dirty === 'string') { IN_PLACE = false; @@ -1378,45 +1220,36 @@ function createDOMPurify() { dirty.indexOf('<') === -1) { return trustedTypesPolicy && RETURN_TRUSTED_TYPE ? trustedTypesPolicy.createHTML(dirty) : dirty; } - /* Initialize the document to work on */ body = _initDocument(dirty); - /* Check we have a DOM node from the data */ if (!body) { return RETURN_DOM ? null : RETURN_TRUSTED_TYPE ? emptyHTML : ''; } } - /* Remove first element node (ours) if FORCE_BODY is set */ if (body && FORCE_BODY) { _forceRemove(body.firstChild); } - /* Get node iterator */ const nodeIterator = _createNodeIterator(IN_PLACE ? dirty : body); - /* Now start iterating over the created document */ while (currentNode = nodeIterator.nextNode()) { /* Sanitize tags and elements */ if (_sanitizeElements(currentNode)) { continue; } - /* Shadow DOM detected, sanitize it */ if (currentNode.content instanceof DocumentFragment) { _sanitizeShadowDOM(currentNode.content); } - /* Check attributes, sanitize if necessary */ _sanitizeAttributes(currentNode); } - /* If we sanitized `dirty` in-place, return it. */ if (IN_PLACE) { return dirty; } - /* Return sanitized string or DOM */ if (RETURN_DOM) { if (RETURN_DOM_FRAGMENT) { @@ -1441,12 +1274,10 @@ function createDOMPurify() { return returnNode; } let serializedHTML = WHOLE_DOCUMENT ? body.outerHTML : body.innerHTML; - /* Serialize doctype if allowed */ if (WHOLE_DOCUMENT && ALLOWED_TAGS['!doctype'] && body.ownerDocument && body.ownerDocument.doctype && body.ownerDocument.doctype.name && regExpTest(DOCTYPE_NAME, body.ownerDocument.doctype.name)) { serializedHTML = '\n' + serializedHTML; } - /* Sanitize final string template-safe */ if (SAFE_FOR_TEMPLATES) { arrayForEach([MUSTACHE_EXPR, ERB_EXPR, TMPLIT_EXPR], expr => { @@ -1455,39 +1286,15 @@ function createDOMPurify() { } return trustedTypesPolicy && RETURN_TRUSTED_TYPE ? trustedTypesPolicy.createHTML(serializedHTML) : serializedHTML; }; - - /** - * Public method to set the configuration once - * setConfig - * - * @param {Object} cfg configuration object - */ DOMPurify.setConfig = function () { let cfg = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {}; _parseConfig(cfg); SET_CONFIG = true; }; - - /** - * Public method to remove the configuration - * clearConfig - * - */ DOMPurify.clearConfig = function () { CONFIG = null; SET_CONFIG = false; }; - - /** - * Public method to check if an attribute value is valid. - * Uses last set config, if any. Otherwise, uses config defaults. - * isValidAttribute - * - * @param {String} tag Tag name of containing element. - * @param {String} attr Attribute name. - * @param {String} value Attribute value. - * @return {Boolean} Returns true if `value` is valid. Otherwise, returns false. - */ DOMPurify.isValidAttribute = function (tag, attr, value) { /* Initialize shared config vars if necessary. */ if (!CONFIG) { @@ -1497,14 +1304,6 @@ function createDOMPurify() { const lcName = transformCaseFunc(attr); return _isValidAttribute(lcTag, lcName, value); }; - - /** - * AddHook - * Public method to add DOMPurify hooks - * - * @param {String} entryPoint entry point for the hook to add - * @param {Function} hookFunction function to execute - */ DOMPurify.addHook = function (entryPoint, hookFunction) { if (typeof hookFunction !== 'function') { return; @@ -1512,37 +1311,16 @@ function createDOMPurify() { hooks[entryPoint] = hooks[entryPoint] || []; arrayPush(hooks[entryPoint], hookFunction); }; - - /** - * RemoveHook - * Public method to remove a DOMPurify hook at a given entryPoint - * (pops it from the stack of hooks if more are present) - * - * @param {String} entryPoint entry point for the hook to remove - * @return {Function} removed(popped) hook - */ DOMPurify.removeHook = function (entryPoint) { if (hooks[entryPoint]) { return arrayPop(hooks[entryPoint]); } }; - - /** - * RemoveHooks - * Public method to remove all DOMPurify hooks at a given entryPoint - * - * @param {String} entryPoint entry point for the hooks to remove - */ DOMPurify.removeHooks = function (entryPoint) { if (hooks[entryPoint]) { hooks[entryPoint] = []; } }; - - /** - * RemoveAllHooks - * Public method to remove all DOMPurify hooks - */ DOMPurify.removeAllHooks = function () { hooks = {}; }; diff --git a/dist/purify.es.mjs.map b/dist/purify.es.mjs.map index 2e86263db..b60ac1e0a 100644 --- a/dist/purify.es.mjs.map +++ b/dist/purify.es.mjs.map @@ -1 +1 @@ -{"version":3,"file":"purify.es.mjs","sources":["../src/utils.js","../src/tags.js","../src/attrs.js","../src/regexp.js","../src/purify.js"],"sourcesContent":["const {\n entries,\n setPrototypeOf,\n isFrozen,\n getPrototypeOf,\n getOwnPropertyDescriptor,\n} = Object;\n\nlet { freeze, seal, create } = Object; // eslint-disable-line import/no-mutable-exports\nlet { apply, construct } = typeof Reflect !== 'undefined' && Reflect;\n\nif (!freeze) {\n freeze = function (x) {\n return x;\n };\n}\n\nif (!seal) {\n seal = function (x) {\n return x;\n };\n}\n\nif (!apply) {\n apply = function (fun, thisValue, args) {\n return fun.apply(thisValue, args);\n };\n}\n\nif (!construct) {\n construct = function (Func, args) {\n return new Func(...args);\n };\n}\n\nconst arrayForEach = unapply(Array.prototype.forEach);\nconst arrayIndexOf = unapply(Array.prototype.indexOf);\nconst arrayPop = unapply(Array.prototype.pop);\nconst arrayPush = unapply(Array.prototype.push);\nconst arraySlice = unapply(Array.prototype.slice);\n\nconst stringToLowerCase = unapply(String.prototype.toLowerCase);\nconst stringToString = unapply(String.prototype.toString);\nconst stringMatch = unapply(String.prototype.match);\nconst stringReplace = unapply(String.prototype.replace);\nconst stringIndexOf = unapply(String.prototype.indexOf);\nconst stringTrim = unapply(String.prototype.trim);\n\nconst objectHasOwnProperty = unapply(Object.prototype.hasOwnProperty);\n\nconst regExpTest = unapply(RegExp.prototype.test);\n\nconst typeErrorCreate = unconstruct(TypeError);\n\n/**\n * Creates a new function that calls the given function with a specified thisArg and arguments.\n *\n * @param {Function} func - The function to be wrapped and called.\n * @returns {Function} A new function that calls the given function with a specified thisArg and arguments.\n */\nfunction unapply(func) {\n return (thisArg, ...args) => apply(func, thisArg, args);\n}\n\n/**\n * Creates a new function that constructs an instance of the given constructor function with the provided arguments.\n *\n * @param {Function} func - The constructor function to be wrapped and called.\n * @returns {Function} A new function that constructs an instance of the given constructor function with the provided arguments.\n */\nfunction unconstruct(func) {\n return (...args) => construct(func, args);\n}\n\n/**\n * Add properties to a lookup table\n *\n * @param {Object} set - The set to which elements will be added.\n * @param {Array} array - The array containing elements to be added to the set.\n * @param {Function} transformCaseFunc - An optional function to transform the case of each element before adding to the set.\n * @returns {Object} The modified set with added elements.\n */\nfunction addToSet(set, array, transformCaseFunc = stringToLowerCase) {\n if (setPrototypeOf) {\n // Make 'in' and truthy checks like Boolean(set.constructor)\n // independent of any properties defined on Object.prototype.\n // Prevent prototype setters from intercepting set as a this value.\n setPrototypeOf(set, null);\n }\n\n let l = array.length;\n while (l--) {\n let element = array[l];\n if (typeof element === 'string') {\n const lcElement = transformCaseFunc(element);\n if (lcElement !== element) {\n // Config presets (e.g. tags.js, attrs.js) are immutable.\n if (!isFrozen(array)) {\n array[l] = lcElement;\n }\n\n element = lcElement;\n }\n }\n\n set[element] = true;\n }\n\n return set;\n}\n\n/**\n * Clean up an array to harden against CSPP\n *\n * @param {Array} array - The array to be cleaned.\n * @returns {Array} The cleaned version of the array\n */\nfunction cleanArray(array) {\n for (let index = 0; index < array.length; index++) {\n const isPropertyExist = objectHasOwnProperty(array, index);\n\n if (!isPropertyExist) {\n array[index] = null;\n }\n }\n\n return array;\n}\n\n/**\n * Shallow clone an object\n *\n * @param {Object} object - The object to be cloned.\n * @returns {Object} A new object that copies the original.\n */\nfunction clone(object) {\n const newObject = create(null);\n\n for (const [property, value] of entries(object)) {\n const isPropertyExist = objectHasOwnProperty(object, property);\n\n if (isPropertyExist) {\n if (Array.isArray(value)) {\n newObject[property] = cleanArray(value);\n } else if (\n value &&\n typeof value === 'object' &&\n value.constructor === Object\n ) {\n newObject[property] = clone(value);\n } else {\n newObject[property] = value;\n }\n }\n }\n\n return newObject;\n}\n\n/**\n * This method automatically checks if the prop is function or getter and behaves accordingly.\n *\n * @param {Object} object - The object to look up the getter function in its prototype chain.\n * @param {String} prop - The property name for which to find the getter function.\n * @returns {Function} The getter function found in the prototype chain or a fallback function.\n */\nfunction lookupGetter(object, prop) {\n while (object !== null) {\n const desc = getOwnPropertyDescriptor(object, prop);\n\n if (desc) {\n if (desc.get) {\n return unapply(desc.get);\n }\n\n if (typeof desc.value === 'function') {\n return unapply(desc.value);\n }\n }\n\n object = getPrototypeOf(object);\n }\n\n function fallbackValue() {\n return null;\n }\n\n return fallbackValue;\n}\n\nexport {\n // Array\n arrayForEach,\n arrayIndexOf,\n arrayPop,\n arrayPush,\n arraySlice,\n // Object\n entries,\n freeze,\n getPrototypeOf,\n getOwnPropertyDescriptor,\n isFrozen,\n setPrototypeOf,\n seal,\n clone,\n create,\n objectHasOwnProperty,\n // RegExp\n regExpTest,\n // String\n stringIndexOf,\n stringMatch,\n stringReplace,\n stringToLowerCase,\n stringToString,\n stringTrim,\n // Errors\n typeErrorCreate,\n // Other\n lookupGetter,\n addToSet,\n // Reflect\n unapply,\n unconstruct,\n};\n","import { freeze } from './utils.js';\n\nexport const html = freeze([\n 'a',\n 'abbr',\n 'acronym',\n 'address',\n 'area',\n 'article',\n 'aside',\n 'audio',\n 'b',\n 'bdi',\n 'bdo',\n 'big',\n 'blink',\n 'blockquote',\n 'body',\n 'br',\n 'button',\n 'canvas',\n 'caption',\n 'center',\n 'cite',\n 'code',\n 'col',\n 'colgroup',\n 'content',\n 'data',\n 'datalist',\n 'dd',\n 'decorator',\n 'del',\n 'details',\n 'dfn',\n 'dialog',\n 'dir',\n 'div',\n 'dl',\n 'dt',\n 'element',\n 'em',\n 'fieldset',\n 'figcaption',\n 'figure',\n 'font',\n 'footer',\n 'form',\n 'h1',\n 'h2',\n 'h3',\n 'h4',\n 'h5',\n 'h6',\n 'head',\n 'header',\n 'hgroup',\n 'hr',\n 'html',\n 'i',\n 'img',\n 'input',\n 'ins',\n 'kbd',\n 'label',\n 'legend',\n 'li',\n 'main',\n 'map',\n 'mark',\n 'marquee',\n 'menu',\n 'menuitem',\n 'meter',\n 'nav',\n 'nobr',\n 'ol',\n 'optgroup',\n 'option',\n 'output',\n 'p',\n 'picture',\n 'pre',\n 'progress',\n 'q',\n 'rp',\n 'rt',\n 'ruby',\n 's',\n 'samp',\n 'section',\n 'select',\n 'shadow',\n 'small',\n 'source',\n 'spacer',\n 'span',\n 'strike',\n 'strong',\n 'style',\n 'sub',\n 'summary',\n 'sup',\n 'table',\n 'tbody',\n 'td',\n 'template',\n 'textarea',\n 'tfoot',\n 'th',\n 'thead',\n 'time',\n 'tr',\n 'track',\n 'tt',\n 'u',\n 'ul',\n 'var',\n 'video',\n 'wbr',\n]);\n\n// SVG\nexport const svg = freeze([\n 'svg',\n 'a',\n 'altglyph',\n 'altglyphdef',\n 'altglyphitem',\n 'animatecolor',\n 'animatemotion',\n 'animatetransform',\n 'circle',\n 'clippath',\n 'defs',\n 'desc',\n 'ellipse',\n 'filter',\n 'font',\n 'g',\n 'glyph',\n 'glyphref',\n 'hkern',\n 'image',\n 'line',\n 'lineargradient',\n 'marker',\n 'mask',\n 'metadata',\n 'mpath',\n 'path',\n 'pattern',\n 'polygon',\n 'polyline',\n 'radialgradient',\n 'rect',\n 'stop',\n 'style',\n 'switch',\n 'symbol',\n 'text',\n 'textpath',\n 'title',\n 'tref',\n 'tspan',\n 'view',\n 'vkern',\n]);\n\nexport const svgFilters = freeze([\n 'feBlend',\n 'feColorMatrix',\n 'feComponentTransfer',\n 'feComposite',\n 'feConvolveMatrix',\n 'feDiffuseLighting',\n 'feDisplacementMap',\n 'feDistantLight',\n 'feDropShadow',\n 'feFlood',\n 'feFuncA',\n 'feFuncB',\n 'feFuncG',\n 'feFuncR',\n 'feGaussianBlur',\n 'feImage',\n 'feMerge',\n 'feMergeNode',\n 'feMorphology',\n 'feOffset',\n 'fePointLight',\n 'feSpecularLighting',\n 'feSpotLight',\n 'feTile',\n 'feTurbulence',\n]);\n\n// List of SVG elements that are disallowed by default.\n// We still need to know them so that we can do namespace\n// checks properly in case one wants to add them to\n// allow-list.\nexport const svgDisallowed = freeze([\n 'animate',\n 'color-profile',\n 'cursor',\n 'discard',\n 'font-face',\n 'font-face-format',\n 'font-face-name',\n 'font-face-src',\n 'font-face-uri',\n 'foreignobject',\n 'hatch',\n 'hatchpath',\n 'mesh',\n 'meshgradient',\n 'meshpatch',\n 'meshrow',\n 'missing-glyph',\n 'script',\n 'set',\n 'solidcolor',\n 'unknown',\n 'use',\n]);\n\nexport const mathMl = freeze([\n 'math',\n 'menclose',\n 'merror',\n 'mfenced',\n 'mfrac',\n 'mglyph',\n 'mi',\n 'mlabeledtr',\n 'mmultiscripts',\n 'mn',\n 'mo',\n 'mover',\n 'mpadded',\n 'mphantom',\n 'mroot',\n 'mrow',\n 'ms',\n 'mspace',\n 'msqrt',\n 'mstyle',\n 'msub',\n 'msup',\n 'msubsup',\n 'mtable',\n 'mtd',\n 'mtext',\n 'mtr',\n 'munder',\n 'munderover',\n 'mprescripts',\n]);\n\n// Similarly to SVG, we want to know all MathML elements,\n// even those that we disallow by default.\nexport const mathMlDisallowed = freeze([\n 'maction',\n 'maligngroup',\n 'malignmark',\n 'mlongdiv',\n 'mscarries',\n 'mscarry',\n 'msgroup',\n 'mstack',\n 'msline',\n 'msrow',\n 'semantics',\n 'annotation',\n 'annotation-xml',\n 'mprescripts',\n 'none',\n]);\n\nexport const text = freeze(['#text']);\n","import { freeze } from './utils.js';\n\nexport const html = freeze([\n 'accept',\n 'action',\n 'align',\n 'alt',\n 'autocapitalize',\n 'autocomplete',\n 'autopictureinpicture',\n 'autoplay',\n 'background',\n 'bgcolor',\n 'border',\n 'capture',\n 'cellpadding',\n 'cellspacing',\n 'checked',\n 'cite',\n 'class',\n 'clear',\n 'color',\n 'cols',\n 'colspan',\n 'controls',\n 'controlslist',\n 'coords',\n 'crossorigin',\n 'datetime',\n 'decoding',\n 'default',\n 'dir',\n 'disabled',\n 'disablepictureinpicture',\n 'disableremoteplayback',\n 'download',\n 'draggable',\n 'enctype',\n 'enterkeyhint',\n 'face',\n 'for',\n 'headers',\n 'height',\n 'hidden',\n 'high',\n 'href',\n 'hreflang',\n 'id',\n 'inputmode',\n 'integrity',\n 'ismap',\n 'kind',\n 'label',\n 'lang',\n 'list',\n 'loading',\n 'loop',\n 'low',\n 'max',\n 'maxlength',\n 'media',\n 'method',\n 'min',\n 'minlength',\n 'multiple',\n 'muted',\n 'name',\n 'nonce',\n 'noshade',\n 'novalidate',\n 'nowrap',\n 'open',\n 'optimum',\n 'pattern',\n 'placeholder',\n 'playsinline',\n 'popover',\n 'popovertarget',\n 'popovertargetaction',\n 'poster',\n 'preload',\n 'pubdate',\n 'radiogroup',\n 'readonly',\n 'rel',\n 'required',\n 'rev',\n 'reversed',\n 'role',\n 'rows',\n 'rowspan',\n 'spellcheck',\n 'scope',\n 'selected',\n 'shape',\n 'size',\n 'sizes',\n 'span',\n 'srclang',\n 'start',\n 'src',\n 'srcset',\n 'step',\n 'style',\n 'summary',\n 'tabindex',\n 'title',\n 'translate',\n 'type',\n 'usemap',\n 'valign',\n 'value',\n 'width',\n 'wrap',\n 'xmlns',\n 'slot',\n]);\n\nexport const svg = freeze([\n 'accent-height',\n 'accumulate',\n 'additive',\n 'alignment-baseline',\n 'amplitude',\n 'ascent',\n 'attributename',\n 'attributetype',\n 'azimuth',\n 'basefrequency',\n 'baseline-shift',\n 'begin',\n 'bias',\n 'by',\n 'class',\n 'clip',\n 'clippathunits',\n 'clip-path',\n 'clip-rule',\n 'color',\n 'color-interpolation',\n 'color-interpolation-filters',\n 'color-profile',\n 'color-rendering',\n 'cx',\n 'cy',\n 'd',\n 'dx',\n 'dy',\n 'diffuseconstant',\n 'direction',\n 'display',\n 'divisor',\n 'dur',\n 'edgemode',\n 'elevation',\n 'end',\n 'exponent',\n 'fill',\n 'fill-opacity',\n 'fill-rule',\n 'filter',\n 'filterunits',\n 'flood-color',\n 'flood-opacity',\n 'font-family',\n 'font-size',\n 'font-size-adjust',\n 'font-stretch',\n 'font-style',\n 'font-variant',\n 'font-weight',\n 'fx',\n 'fy',\n 'g1',\n 'g2',\n 'glyph-name',\n 'glyphref',\n 'gradientunits',\n 'gradienttransform',\n 'height',\n 'href',\n 'id',\n 'image-rendering',\n 'in',\n 'in2',\n 'intercept',\n 'k',\n 'k1',\n 'k2',\n 'k3',\n 'k4',\n 'kerning',\n 'keypoints',\n 'keysplines',\n 'keytimes',\n 'lang',\n 'lengthadjust',\n 'letter-spacing',\n 'kernelmatrix',\n 'kernelunitlength',\n 'lighting-color',\n 'local',\n 'marker-end',\n 'marker-mid',\n 'marker-start',\n 'markerheight',\n 'markerunits',\n 'markerwidth',\n 'maskcontentunits',\n 'maskunits',\n 'max',\n 'mask',\n 'media',\n 'method',\n 'mode',\n 'min',\n 'name',\n 'numoctaves',\n 'offset',\n 'operator',\n 'opacity',\n 'order',\n 'orient',\n 'orientation',\n 'origin',\n 'overflow',\n 'paint-order',\n 'path',\n 'pathlength',\n 'patterncontentunits',\n 'patterntransform',\n 'patternunits',\n 'points',\n 'preservealpha',\n 'preserveaspectratio',\n 'primitiveunits',\n 'r',\n 'rx',\n 'ry',\n 'radius',\n 'refx',\n 'refy',\n 'repeatcount',\n 'repeatdur',\n 'restart',\n 'result',\n 'rotate',\n 'scale',\n 'seed',\n 'shape-rendering',\n 'slope',\n 'specularconstant',\n 'specularexponent',\n 'spreadmethod',\n 'startoffset',\n 'stddeviation',\n 'stitchtiles',\n 'stop-color',\n 'stop-opacity',\n 'stroke-dasharray',\n 'stroke-dashoffset',\n 'stroke-linecap',\n 'stroke-linejoin',\n 'stroke-miterlimit',\n 'stroke-opacity',\n 'stroke',\n 'stroke-width',\n 'style',\n 'surfacescale',\n 'systemlanguage',\n 'tabindex',\n 'tablevalues',\n 'targetx',\n 'targety',\n 'transform',\n 'transform-origin',\n 'text-anchor',\n 'text-decoration',\n 'text-rendering',\n 'textlength',\n 'type',\n 'u1',\n 'u2',\n 'unicode',\n 'values',\n 'viewbox',\n 'visibility',\n 'version',\n 'vert-adv-y',\n 'vert-origin-x',\n 'vert-origin-y',\n 'width',\n 'word-spacing',\n 'wrap',\n 'writing-mode',\n 'xchannelselector',\n 'ychannelselector',\n 'x',\n 'x1',\n 'x2',\n 'xmlns',\n 'y',\n 'y1',\n 'y2',\n 'z',\n 'zoomandpan',\n]);\n\nexport const mathMl = freeze([\n 'accent',\n 'accentunder',\n 'align',\n 'bevelled',\n 'close',\n 'columnsalign',\n 'columnlines',\n 'columnspan',\n 'denomalign',\n 'depth',\n 'dir',\n 'display',\n 'displaystyle',\n 'encoding',\n 'fence',\n 'frame',\n 'height',\n 'href',\n 'id',\n 'largeop',\n 'length',\n 'linethickness',\n 'lspace',\n 'lquote',\n 'mathbackground',\n 'mathcolor',\n 'mathsize',\n 'mathvariant',\n 'maxsize',\n 'minsize',\n 'movablelimits',\n 'notation',\n 'numalign',\n 'open',\n 'rowalign',\n 'rowlines',\n 'rowspacing',\n 'rowspan',\n 'rspace',\n 'rquote',\n 'scriptlevel',\n 'scriptminsize',\n 'scriptsizemultiplier',\n 'selection',\n 'separator',\n 'separators',\n 'stretchy',\n 'subscriptshift',\n 'supscriptshift',\n 'symmetric',\n 'voffset',\n 'width',\n 'xmlns',\n]);\n\nexport const xml = freeze([\n 'xlink:href',\n 'xml:id',\n 'xlink:title',\n 'xml:space',\n 'xmlns:xlink',\n]);\n","import { seal } from './utils.js';\n\n// eslint-disable-next-line unicorn/better-regex\nexport const MUSTACHE_EXPR = seal(/\\{\\{[\\w\\W]*|[\\w\\W]*\\}\\}/gm); // Specify template detection regex for SAFE_FOR_TEMPLATES mode\nexport const ERB_EXPR = seal(/<%[\\w\\W]*|[\\w\\W]*%>/gm);\nexport const TMPLIT_EXPR = seal(/\\${[\\w\\W]*}/gm);\nexport const DATA_ATTR = seal(/^data-[\\-\\w.\\u00B7-\\uFFFF]/); // eslint-disable-line no-useless-escape\nexport const ARIA_ATTR = seal(/^aria-[\\-\\w]+$/); // eslint-disable-line no-useless-escape\nexport const IS_ALLOWED_URI = seal(\n /^(?:(?:(?:f|ht)tps?|mailto|tel|callto|sms|cid|xmpp):|[^a-z]|[a-z+.\\-]+(?:[^a-z+.\\-:]|$))/i // eslint-disable-line no-useless-escape\n);\nexport const IS_SCRIPT_OR_DATA = seal(/^(?:\\w+script|data):/i);\nexport const ATTR_WHITESPACE = seal(\n /[\\u0000-\\u0020\\u00A0\\u1680\\u180E\\u2000-\\u2029\\u205F\\u3000]/g // eslint-disable-line no-control-regex\n);\nexport const DOCTYPE_NAME = seal(/^html$/i);\nexport const CUSTOM_ELEMENT = seal(/^[a-z][.\\w]*(-[.\\w]+)+$/i);\n","import * as TAGS from './tags.js';\nimport * as ATTRS from './attrs.js';\nimport * as EXPRESSIONS from './regexp.js';\nimport {\n addToSet,\n clone,\n entries,\n freeze,\n arrayForEach,\n arrayPop,\n arrayPush,\n stringMatch,\n stringReplace,\n stringToLowerCase,\n stringToString,\n stringIndexOf,\n stringTrim,\n regExpTest,\n typeErrorCreate,\n lookupGetter,\n create,\n objectHasOwnProperty,\n} from './utils.js';\n\n// https://developer.mozilla.org/en-US/docs/Web/API/Node/nodeType\nconst NODE_TYPE = {\n element: 1,\n attribute: 2,\n text: 3,\n cdataSection: 4,\n entityReference: 5, // Deprecated\n entityNode: 6, // Deprecated\n progressingInstruction: 7,\n comment: 8,\n document: 9,\n documentType: 10,\n documentFragment: 11,\n notation: 12, // Deprecated\n};\n\nconst getGlobal = function () {\n return typeof window === 'undefined' ? null : window;\n};\n\n/**\n * Creates a no-op policy for internal use only.\n * Don't export this function outside this module!\n * @param {TrustedTypePolicyFactory} trustedTypes The policy factory.\n * @param {HTMLScriptElement} purifyHostElement The Script element used to load DOMPurify (to determine policy name suffix).\n * @return {TrustedTypePolicy} The policy created (or null, if Trusted Types\n * are not supported or creating the policy failed).\n */\nconst _createTrustedTypesPolicy = function (trustedTypes, purifyHostElement) {\n if (\n typeof trustedTypes !== 'object' ||\n typeof trustedTypes.createPolicy !== 'function'\n ) {\n return null;\n }\n\n // Allow the callers to control the unique policy name\n // by adding a data-tt-policy-suffix to the script element with the DOMPurify.\n // Policy creation with duplicate names throws in Trusted Types.\n let suffix = null;\n const ATTR_NAME = 'data-tt-policy-suffix';\n if (purifyHostElement && purifyHostElement.hasAttribute(ATTR_NAME)) {\n suffix = purifyHostElement.getAttribute(ATTR_NAME);\n }\n\n const policyName = 'dompurify' + (suffix ? '#' + suffix : '');\n\n try {\n return trustedTypes.createPolicy(policyName, {\n createHTML(html) {\n return html;\n },\n createScriptURL(scriptUrl) {\n return scriptUrl;\n },\n });\n } catch (_) {\n // Policy creation failed (most likely another DOMPurify script has\n // already run). Skip creating the policy, as this will only cause errors\n // if TT are enforced.\n console.warn(\n 'TrustedTypes policy ' + policyName + ' could not be created.'\n );\n return null;\n }\n};\n\nfunction createDOMPurify(window = getGlobal()) {\n const DOMPurify = (root) => createDOMPurify(root);\n\n /**\n * Version label, exposed for easier checks\n * if DOMPurify is up to date or not\n */\n DOMPurify.version = VERSION;\n\n /**\n * Array of elements that DOMPurify removed during sanitation.\n * Empty if nothing was removed.\n */\n DOMPurify.removed = [];\n\n if (\n !window ||\n !window.document ||\n window.document.nodeType !== NODE_TYPE.document\n ) {\n // Not running in a browser, provide a factory function\n // so that you can pass your own Window\n DOMPurify.isSupported = false;\n\n return DOMPurify;\n }\n\n let { document } = window;\n\n const originalDocument = document;\n const currentScript = originalDocument.currentScript;\n const {\n DocumentFragment,\n HTMLTemplateElement,\n Node,\n Element,\n NodeFilter,\n NamedNodeMap = window.NamedNodeMap || window.MozNamedAttrMap,\n HTMLFormElement,\n DOMParser,\n trustedTypes,\n } = window;\n\n const ElementPrototype = Element.prototype;\n\n const cloneNode = lookupGetter(ElementPrototype, 'cloneNode');\n const remove = lookupGetter(ElementPrototype, 'remove');\n const getNextSibling = lookupGetter(ElementPrototype, 'nextSibling');\n const getChildNodes = lookupGetter(ElementPrototype, 'childNodes');\n const getParentNode = lookupGetter(ElementPrototype, 'parentNode');\n\n // As per issue #47, the web-components registry is inherited by a\n // new document created via createHTMLDocument. As per the spec\n // (http://w3c.github.io/webcomponents/spec/custom/#creating-and-passing-registries)\n // a new empty registry is used when creating a template contents owner\n // document, so we use that as our parent document to ensure nothing\n // is inherited.\n if (typeof HTMLTemplateElement === 'function') {\n const template = document.createElement('template');\n if (template.content && template.content.ownerDocument) {\n document = template.content.ownerDocument;\n }\n }\n\n let trustedTypesPolicy;\n let emptyHTML = '';\n\n const {\n implementation,\n createNodeIterator,\n createDocumentFragment,\n getElementsByTagName,\n } = document;\n const { importNode } = originalDocument;\n\n let hooks = {};\n\n /**\n * Expose whether this browser supports running the full DOMPurify.\n */\n DOMPurify.isSupported =\n typeof entries === 'function' &&\n typeof getParentNode === 'function' &&\n implementation &&\n implementation.createHTMLDocument !== undefined;\n\n const {\n MUSTACHE_EXPR,\n ERB_EXPR,\n TMPLIT_EXPR,\n DATA_ATTR,\n ARIA_ATTR,\n IS_SCRIPT_OR_DATA,\n ATTR_WHITESPACE,\n CUSTOM_ELEMENT,\n } = EXPRESSIONS;\n\n let { IS_ALLOWED_URI } = EXPRESSIONS;\n\n /**\n * We consider the elements and attributes below to be safe. Ideally\n * don't add any new ones but feel free to remove unwanted ones.\n */\n\n /* allowed element names */\n let ALLOWED_TAGS = null;\n const DEFAULT_ALLOWED_TAGS = addToSet({}, [\n ...TAGS.html,\n ...TAGS.svg,\n ...TAGS.svgFilters,\n ...TAGS.mathMl,\n ...TAGS.text,\n ]);\n\n /* Allowed attribute names */\n let ALLOWED_ATTR = null;\n const DEFAULT_ALLOWED_ATTR = addToSet({}, [\n ...ATTRS.html,\n ...ATTRS.svg,\n ...ATTRS.mathMl,\n ...ATTRS.xml,\n ]);\n\n /*\n * Configure how DOMPUrify should handle custom elements and their attributes as well as customized built-in elements.\n * @property {RegExp|Function|null} tagNameCheck one of [null, regexPattern, predicate]. Default: `null` (disallow any custom elements)\n * @property {RegExp|Function|null} attributeNameCheck one of [null, regexPattern, predicate]. Default: `null` (disallow any attributes not on the allow list)\n * @property {boolean} allowCustomizedBuiltInElements allow custom elements derived from built-ins if they pass CUSTOM_ELEMENT_HANDLING.tagNameCheck. Default: `false`.\n */\n let CUSTOM_ELEMENT_HANDLING = Object.seal(\n create(null, {\n tagNameCheck: {\n writable: true,\n configurable: false,\n enumerable: true,\n value: null,\n },\n attributeNameCheck: {\n writable: true,\n configurable: false,\n enumerable: true,\n value: null,\n },\n allowCustomizedBuiltInElements: {\n writable: true,\n configurable: false,\n enumerable: true,\n value: false,\n },\n })\n );\n\n /* Explicitly forbidden tags (overrides ALLOWED_TAGS/ADD_TAGS) */\n let FORBID_TAGS = null;\n\n /* Explicitly forbidden attributes (overrides ALLOWED_ATTR/ADD_ATTR) */\n let FORBID_ATTR = null;\n\n /* Decide if ARIA attributes are okay */\n let ALLOW_ARIA_ATTR = true;\n\n /* Decide if custom data attributes are okay */\n let ALLOW_DATA_ATTR = true;\n\n /* Decide if unknown protocols are okay */\n let ALLOW_UNKNOWN_PROTOCOLS = false;\n\n /* Decide if self-closing tags in attributes are allowed.\n * Usually removed due to a mXSS issue in jQuery 3.0 */\n let ALLOW_SELF_CLOSE_IN_ATTR = true;\n\n /* Output should be safe for common template engines.\n * This means, DOMPurify removes data attributes, mustaches and ERB\n */\n let SAFE_FOR_TEMPLATES = false;\n\n /* Output should be safe even for XML used within HTML and alike.\n * This means, DOMPurify removes comments when containing risky content.\n */\n let SAFE_FOR_XML = true;\n\n /* Decide if document with ... should be returned */\n let WHOLE_DOCUMENT = false;\n\n /* Track whether config is already set on this instance of DOMPurify. */\n let SET_CONFIG = false;\n\n /* Decide if all elements (e.g. style, script) must be children of\n * document.body. By default, browsers might move them to document.head */\n let FORCE_BODY = false;\n\n /* Decide if a DOM `HTMLBodyElement` should be returned, instead of a html\n * string (or a TrustedHTML object if Trusted Types are supported).\n * If `WHOLE_DOCUMENT` is enabled a `HTMLHtmlElement` will be returned instead\n */\n let RETURN_DOM = false;\n\n /* Decide if a DOM `DocumentFragment` should be returned, instead of a html\n * string (or a TrustedHTML object if Trusted Types are supported) */\n let RETURN_DOM_FRAGMENT = false;\n\n /* Try to return a Trusted Type object instead of a string, return a string in\n * case Trusted Types are not supported */\n let RETURN_TRUSTED_TYPE = false;\n\n /* Output should be free from DOM clobbering attacks?\n * This sanitizes markups named with colliding, clobberable built-in DOM APIs.\n */\n let SANITIZE_DOM = true;\n\n /* Achieve full DOM Clobbering protection by isolating the namespace of named\n * properties and JS variables, mitigating attacks that abuse the HTML/DOM spec rules.\n *\n * HTML/DOM spec rules that enable DOM Clobbering:\n * - Named Access on Window (§7.3.3)\n * - DOM Tree Accessors (§3.1.5)\n * - Form Element Parent-Child Relations (§4.10.3)\n * - Iframe srcdoc / Nested WindowProxies (§4.8.5)\n * - HTMLCollection (§4.2.10.2)\n *\n * Namespace isolation is implemented by prefixing `id` and `name` attributes\n * with a constant string, i.e., `user-content-`\n */\n let SANITIZE_NAMED_PROPS = false;\n const SANITIZE_NAMED_PROPS_PREFIX = 'user-content-';\n\n /* Keep element content when removing element? */\n let KEEP_CONTENT = true;\n\n /* If a `Node` is passed to sanitize(), then performs sanitization in-place instead\n * of importing it into a new Document and returning a sanitized copy */\n let IN_PLACE = false;\n\n /* Allow usage of profiles like html, svg and mathMl */\n let USE_PROFILES = {};\n\n /* Tags to ignore content of when KEEP_CONTENT is true */\n let FORBID_CONTENTS = null;\n const DEFAULT_FORBID_CONTENTS = addToSet({}, [\n 'annotation-xml',\n 'audio',\n 'colgroup',\n 'desc',\n 'foreignobject',\n 'head',\n 'iframe',\n 'math',\n 'mi',\n 'mn',\n 'mo',\n 'ms',\n 'mtext',\n 'noembed',\n 'noframes',\n 'noscript',\n 'plaintext',\n 'script',\n 'style',\n 'svg',\n 'template',\n 'thead',\n 'title',\n 'video',\n 'xmp',\n ]);\n\n /* Tags that are safe for data: URIs */\n let DATA_URI_TAGS = null;\n const DEFAULT_DATA_URI_TAGS = addToSet({}, [\n 'audio',\n 'video',\n 'img',\n 'source',\n 'image',\n 'track',\n ]);\n\n /* Attributes safe for values like \"javascript:\" */\n let URI_SAFE_ATTRIBUTES = null;\n const DEFAULT_URI_SAFE_ATTRIBUTES = addToSet({}, [\n 'alt',\n 'class',\n 'for',\n 'id',\n 'label',\n 'name',\n 'pattern',\n 'placeholder',\n 'role',\n 'summary',\n 'title',\n 'value',\n 'style',\n 'xmlns',\n ]);\n\n const MATHML_NAMESPACE = 'http://www.w3.org/1998/Math/MathML';\n const SVG_NAMESPACE = 'http://www.w3.org/2000/svg';\n const HTML_NAMESPACE = 'http://www.w3.org/1999/xhtml';\n /* Document namespace */\n let NAMESPACE = HTML_NAMESPACE;\n let IS_EMPTY_INPUT = false;\n\n /* Allowed XHTML+XML namespaces */\n let ALLOWED_NAMESPACES = null;\n const DEFAULT_ALLOWED_NAMESPACES = addToSet(\n {},\n [MATHML_NAMESPACE, SVG_NAMESPACE, HTML_NAMESPACE],\n stringToString\n );\n\n /* Parsing of strict XHTML documents */\n let PARSER_MEDIA_TYPE = null;\n const SUPPORTED_PARSER_MEDIA_TYPES = ['application/xhtml+xml', 'text/html'];\n const DEFAULT_PARSER_MEDIA_TYPE = 'text/html';\n let transformCaseFunc = null;\n\n /* Keep a reference to config to pass to hooks */\n let CONFIG = null;\n\n /* Ideally, do not touch anything below this line */\n /* ______________________________________________ */\n\n const formElement = document.createElement('form');\n\n const isRegexOrFunction = function (testValue) {\n return testValue instanceof RegExp || testValue instanceof Function;\n };\n\n /**\n * _parseConfig\n *\n * @param {Object} cfg optional config literal\n */\n // eslint-disable-next-line complexity\n const _parseConfig = function (cfg = {}) {\n if (CONFIG && CONFIG === cfg) {\n return;\n }\n\n /* Shield configuration object from tampering */\n if (!cfg || typeof cfg !== 'object') {\n cfg = {};\n }\n\n /* Shield configuration object from prototype pollution */\n cfg = clone(cfg);\n\n PARSER_MEDIA_TYPE =\n // eslint-disable-next-line unicorn/prefer-includes\n SUPPORTED_PARSER_MEDIA_TYPES.indexOf(cfg.PARSER_MEDIA_TYPE) === -1\n ? DEFAULT_PARSER_MEDIA_TYPE\n : cfg.PARSER_MEDIA_TYPE;\n\n // HTML tags and attributes are not case-sensitive, converting to lowercase. Keeping XHTML as is.\n transformCaseFunc =\n PARSER_MEDIA_TYPE === 'application/xhtml+xml'\n ? stringToString\n : stringToLowerCase;\n\n /* Set configuration parameters */\n ALLOWED_TAGS = objectHasOwnProperty(cfg, 'ALLOWED_TAGS')\n ? addToSet({}, cfg.ALLOWED_TAGS, transformCaseFunc)\n : DEFAULT_ALLOWED_TAGS;\n ALLOWED_ATTR = objectHasOwnProperty(cfg, 'ALLOWED_ATTR')\n ? addToSet({}, cfg.ALLOWED_ATTR, transformCaseFunc)\n : DEFAULT_ALLOWED_ATTR;\n ALLOWED_NAMESPACES = objectHasOwnProperty(cfg, 'ALLOWED_NAMESPACES')\n ? addToSet({}, cfg.ALLOWED_NAMESPACES, stringToString)\n : DEFAULT_ALLOWED_NAMESPACES;\n URI_SAFE_ATTRIBUTES = objectHasOwnProperty(cfg, 'ADD_URI_SAFE_ATTR')\n ? addToSet(\n clone(DEFAULT_URI_SAFE_ATTRIBUTES), // eslint-disable-line indent\n cfg.ADD_URI_SAFE_ATTR, // eslint-disable-line indent\n transformCaseFunc // eslint-disable-line indent\n ) // eslint-disable-line indent\n : DEFAULT_URI_SAFE_ATTRIBUTES;\n DATA_URI_TAGS = objectHasOwnProperty(cfg, 'ADD_DATA_URI_TAGS')\n ? addToSet(\n clone(DEFAULT_DATA_URI_TAGS), // eslint-disable-line indent\n cfg.ADD_DATA_URI_TAGS, // eslint-disable-line indent\n transformCaseFunc // eslint-disable-line indent\n ) // eslint-disable-line indent\n : DEFAULT_DATA_URI_TAGS;\n FORBID_CONTENTS = objectHasOwnProperty(cfg, 'FORBID_CONTENTS')\n ? addToSet({}, cfg.FORBID_CONTENTS, transformCaseFunc)\n : DEFAULT_FORBID_CONTENTS;\n FORBID_TAGS = objectHasOwnProperty(cfg, 'FORBID_TAGS')\n ? addToSet({}, cfg.FORBID_TAGS, transformCaseFunc)\n : {};\n FORBID_ATTR = objectHasOwnProperty(cfg, 'FORBID_ATTR')\n ? addToSet({}, cfg.FORBID_ATTR, transformCaseFunc)\n : {};\n USE_PROFILES = objectHasOwnProperty(cfg, 'USE_PROFILES')\n ? cfg.USE_PROFILES\n : false;\n ALLOW_ARIA_ATTR = cfg.ALLOW_ARIA_ATTR !== false; // Default true\n ALLOW_DATA_ATTR = cfg.ALLOW_DATA_ATTR !== false; // Default true\n ALLOW_UNKNOWN_PROTOCOLS = cfg.ALLOW_UNKNOWN_PROTOCOLS || false; // Default false\n ALLOW_SELF_CLOSE_IN_ATTR = cfg.ALLOW_SELF_CLOSE_IN_ATTR !== false; // Default true\n SAFE_FOR_TEMPLATES = cfg.SAFE_FOR_TEMPLATES || false; // Default false\n SAFE_FOR_XML = cfg.SAFE_FOR_XML !== false; // Default true\n WHOLE_DOCUMENT = cfg.WHOLE_DOCUMENT || false; // Default false\n RETURN_DOM = cfg.RETURN_DOM || false; // Default false\n RETURN_DOM_FRAGMENT = cfg.RETURN_DOM_FRAGMENT || false; // Default false\n RETURN_TRUSTED_TYPE = cfg.RETURN_TRUSTED_TYPE || false; // Default false\n FORCE_BODY = cfg.FORCE_BODY || false; // Default false\n SANITIZE_DOM = cfg.SANITIZE_DOM !== false; // Default true\n SANITIZE_NAMED_PROPS = cfg.SANITIZE_NAMED_PROPS || false; // Default false\n KEEP_CONTENT = cfg.KEEP_CONTENT !== false; // Default true\n IN_PLACE = cfg.IN_PLACE || false; // Default false\n IS_ALLOWED_URI = cfg.ALLOWED_URI_REGEXP || EXPRESSIONS.IS_ALLOWED_URI;\n NAMESPACE = cfg.NAMESPACE || HTML_NAMESPACE;\n CUSTOM_ELEMENT_HANDLING = cfg.CUSTOM_ELEMENT_HANDLING || {};\n if (\n cfg.CUSTOM_ELEMENT_HANDLING &&\n isRegexOrFunction(cfg.CUSTOM_ELEMENT_HANDLING.tagNameCheck)\n ) {\n CUSTOM_ELEMENT_HANDLING.tagNameCheck =\n cfg.CUSTOM_ELEMENT_HANDLING.tagNameCheck;\n }\n\n if (\n cfg.CUSTOM_ELEMENT_HANDLING &&\n isRegexOrFunction(cfg.CUSTOM_ELEMENT_HANDLING.attributeNameCheck)\n ) {\n CUSTOM_ELEMENT_HANDLING.attributeNameCheck =\n cfg.CUSTOM_ELEMENT_HANDLING.attributeNameCheck;\n }\n\n if (\n cfg.CUSTOM_ELEMENT_HANDLING &&\n typeof cfg.CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements ===\n 'boolean'\n ) {\n CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements =\n cfg.CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements;\n }\n\n if (SAFE_FOR_TEMPLATES) {\n ALLOW_DATA_ATTR = false;\n }\n\n if (RETURN_DOM_FRAGMENT) {\n RETURN_DOM = true;\n }\n\n /* Parse profile info */\n if (USE_PROFILES) {\n ALLOWED_TAGS = addToSet({}, TAGS.text);\n ALLOWED_ATTR = [];\n if (USE_PROFILES.html === true) {\n addToSet(ALLOWED_TAGS, TAGS.html);\n addToSet(ALLOWED_ATTR, ATTRS.html);\n }\n\n if (USE_PROFILES.svg === true) {\n addToSet(ALLOWED_TAGS, TAGS.svg);\n addToSet(ALLOWED_ATTR, ATTRS.svg);\n addToSet(ALLOWED_ATTR, ATTRS.xml);\n }\n\n if (USE_PROFILES.svgFilters === true) {\n addToSet(ALLOWED_TAGS, TAGS.svgFilters);\n addToSet(ALLOWED_ATTR, ATTRS.svg);\n addToSet(ALLOWED_ATTR, ATTRS.xml);\n }\n\n if (USE_PROFILES.mathMl === true) {\n addToSet(ALLOWED_TAGS, TAGS.mathMl);\n addToSet(ALLOWED_ATTR, ATTRS.mathMl);\n addToSet(ALLOWED_ATTR, ATTRS.xml);\n }\n }\n\n /* Merge configuration parameters */\n if (cfg.ADD_TAGS) {\n if (ALLOWED_TAGS === DEFAULT_ALLOWED_TAGS) {\n ALLOWED_TAGS = clone(ALLOWED_TAGS);\n }\n\n addToSet(ALLOWED_TAGS, cfg.ADD_TAGS, transformCaseFunc);\n }\n\n if (cfg.ADD_ATTR) {\n if (ALLOWED_ATTR === DEFAULT_ALLOWED_ATTR) {\n ALLOWED_ATTR = clone(ALLOWED_ATTR);\n }\n\n addToSet(ALLOWED_ATTR, cfg.ADD_ATTR, transformCaseFunc);\n }\n\n if (cfg.ADD_URI_SAFE_ATTR) {\n addToSet(URI_SAFE_ATTRIBUTES, cfg.ADD_URI_SAFE_ATTR, transformCaseFunc);\n }\n\n if (cfg.FORBID_CONTENTS) {\n if (FORBID_CONTENTS === DEFAULT_FORBID_CONTENTS) {\n FORBID_CONTENTS = clone(FORBID_CONTENTS);\n }\n\n addToSet(FORBID_CONTENTS, cfg.FORBID_CONTENTS, transformCaseFunc);\n }\n\n /* Add #text in case KEEP_CONTENT is set to true */\n if (KEEP_CONTENT) {\n ALLOWED_TAGS['#text'] = true;\n }\n\n /* Add html, head and body to ALLOWED_TAGS in case WHOLE_DOCUMENT is true */\n if (WHOLE_DOCUMENT) {\n addToSet(ALLOWED_TAGS, ['html', 'head', 'body']);\n }\n\n /* Add tbody to ALLOWED_TAGS in case tables are permitted, see #286, #365 */\n if (ALLOWED_TAGS.table) {\n addToSet(ALLOWED_TAGS, ['tbody']);\n delete FORBID_TAGS.tbody;\n }\n\n if (cfg.TRUSTED_TYPES_POLICY) {\n if (typeof cfg.TRUSTED_TYPES_POLICY.createHTML !== 'function') {\n throw typeErrorCreate(\n 'TRUSTED_TYPES_POLICY configuration option must provide a \"createHTML\" hook.'\n );\n }\n\n if (typeof cfg.TRUSTED_TYPES_POLICY.createScriptURL !== 'function') {\n throw typeErrorCreate(\n 'TRUSTED_TYPES_POLICY configuration option must provide a \"createScriptURL\" hook.'\n );\n }\n\n // Overwrite existing TrustedTypes policy.\n trustedTypesPolicy = cfg.TRUSTED_TYPES_POLICY;\n\n // Sign local variables required by `sanitize`.\n emptyHTML = trustedTypesPolicy.createHTML('');\n } else {\n // Uninitialized policy, attempt to initialize the internal dompurify policy.\n if (trustedTypesPolicy === undefined) {\n trustedTypesPolicy = _createTrustedTypesPolicy(\n trustedTypes,\n currentScript\n );\n }\n\n // If creating the internal policy succeeded sign internal variables.\n if (trustedTypesPolicy !== null && typeof emptyHTML === 'string') {\n emptyHTML = trustedTypesPolicy.createHTML('');\n }\n }\n\n // Prevent further manipulation of configuration.\n // Not available in IE8, Safari 5, etc.\n if (freeze) {\n freeze(cfg);\n }\n\n CONFIG = cfg;\n };\n\n const MATHML_TEXT_INTEGRATION_POINTS = addToSet({}, [\n 'mi',\n 'mo',\n 'mn',\n 'ms',\n 'mtext',\n ]);\n\n const HTML_INTEGRATION_POINTS = addToSet({}, ['annotation-xml']);\n\n // Certain elements are allowed in both SVG and HTML\n // namespace. We need to specify them explicitly\n // so that they don't get erroneously deleted from\n // HTML namespace.\n const COMMON_SVG_AND_HTML_ELEMENTS = addToSet({}, [\n 'title',\n 'style',\n 'font',\n 'a',\n 'script',\n ]);\n\n /* Keep track of all possible SVG and MathML tags\n * so that we can perform the namespace checks\n * correctly. */\n const ALL_SVG_TAGS = addToSet({}, [\n ...TAGS.svg,\n ...TAGS.svgFilters,\n ...TAGS.svgDisallowed,\n ]);\n const ALL_MATHML_TAGS = addToSet({}, [\n ...TAGS.mathMl,\n ...TAGS.mathMlDisallowed,\n ]);\n\n /**\n * @param {Element} element a DOM element whose namespace is being checked\n * @returns {boolean} Return false if the element has a\n * namespace that a spec-compliant parser would never\n * return. Return true otherwise.\n */\n const _checkValidNamespace = function (element) {\n let parent = getParentNode(element);\n\n // In JSDOM, if we're inside shadow DOM, then parentNode\n // can be null. We just simulate parent in this case.\n if (!parent || !parent.tagName) {\n parent = {\n namespaceURI: NAMESPACE,\n tagName: 'template',\n };\n }\n\n const tagName = stringToLowerCase(element.tagName);\n const parentTagName = stringToLowerCase(parent.tagName);\n\n if (!ALLOWED_NAMESPACES[element.namespaceURI]) {\n return false;\n }\n\n if (element.namespaceURI === SVG_NAMESPACE) {\n // The only way to switch from HTML namespace to SVG\n // is via . If it happens via any other tag, then\n // it should be killed.\n if (parent.namespaceURI === HTML_NAMESPACE) {\n return tagName === 'svg';\n }\n\n // The only way to switch from MathML to SVG is via`\n // svg if parent is either or MathML\n // text integration points.\n if (parent.namespaceURI === MATHML_NAMESPACE) {\n return (\n tagName === 'svg' &&\n (parentTagName === 'annotation-xml' ||\n MATHML_TEXT_INTEGRATION_POINTS[parentTagName])\n );\n }\n\n // We only allow elements that are defined in SVG\n // spec. All others are disallowed in SVG namespace.\n return Boolean(ALL_SVG_TAGS[tagName]);\n }\n\n if (element.namespaceURI === MATHML_NAMESPACE) {\n // The only way to switch from HTML namespace to MathML\n // is via . If it happens via any other tag, then\n // it should be killed.\n if (parent.namespaceURI === HTML_NAMESPACE) {\n return tagName === 'math';\n }\n\n // The only way to switch from SVG to MathML is via\n // and HTML integration points\n if (parent.namespaceURI === SVG_NAMESPACE) {\n return tagName === 'math' && HTML_INTEGRATION_POINTS[parentTagName];\n }\n\n // We only allow elements that are defined in MathML\n // spec. All others are disallowed in MathML namespace.\n return Boolean(ALL_MATHML_TAGS[tagName]);\n }\n\n if (element.namespaceURI === HTML_NAMESPACE) {\n // The only way to switch from SVG to HTML is via\n // HTML integration points, and from MathML to HTML\n // is via MathML text integration points\n if (\n parent.namespaceURI === SVG_NAMESPACE &&\n !HTML_INTEGRATION_POINTS[parentTagName]\n ) {\n return false;\n }\n\n if (\n parent.namespaceURI === MATHML_NAMESPACE &&\n !MATHML_TEXT_INTEGRATION_POINTS[parentTagName]\n ) {\n return false;\n }\n\n // We disallow tags that are specific for MathML\n // or SVG and should never appear in HTML namespace\n return (\n !ALL_MATHML_TAGS[tagName] &&\n (COMMON_SVG_AND_HTML_ELEMENTS[tagName] || !ALL_SVG_TAGS[tagName])\n );\n }\n\n // For XHTML and XML documents that support custom namespaces\n if (\n PARSER_MEDIA_TYPE === 'application/xhtml+xml' &&\n ALLOWED_NAMESPACES[element.namespaceURI]\n ) {\n return true;\n }\n\n // The code should never reach this place (this means\n // that the element somehow got namespace that is not\n // HTML, SVG, MathML or allowed via ALLOWED_NAMESPACES).\n // Return false just in case.\n return false;\n };\n\n /**\n * _forceRemove\n *\n * @param {Node} node a DOM node\n */\n const _forceRemove = function (node) {\n arrayPush(DOMPurify.removed, { element: node });\n\n try {\n // eslint-disable-next-line unicorn/prefer-dom-node-remove\n getParentNode(node).removeChild(node);\n } catch (_) {\n remove(node);\n }\n };\n\n /**\n * _removeAttribute\n *\n * @param {String} name an Attribute name\n * @param {Node} node a DOM node\n */\n const _removeAttribute = function (name, node) {\n try {\n arrayPush(DOMPurify.removed, {\n attribute: node.getAttributeNode(name),\n from: node,\n });\n } catch (_) {\n arrayPush(DOMPurify.removed, {\n attribute: null,\n from: node,\n });\n }\n\n node.removeAttribute(name);\n\n // We void attribute values for unremovable \"is\"\" attributes\n if (name === 'is' && !ALLOWED_ATTR[name]) {\n if (RETURN_DOM || RETURN_DOM_FRAGMENT) {\n try {\n _forceRemove(node);\n } catch (_) {}\n } else {\n try {\n node.setAttribute(name, '');\n } catch (_) {}\n }\n }\n };\n\n /**\n * _initDocument\n *\n * @param {String} dirty a string of dirty markup\n * @return {Document} a DOM, filled with the dirty markup\n */\n const _initDocument = function (dirty) {\n /* Create a HTML document */\n let doc = null;\n let leadingWhitespace = null;\n\n if (FORCE_BODY) {\n dirty = '' + dirty;\n } else {\n /* If FORCE_BODY isn't used, leading whitespace needs to be preserved manually */\n const matches = stringMatch(dirty, /^[\\r\\n\\t ]+/);\n leadingWhitespace = matches && matches[0];\n }\n\n if (\n PARSER_MEDIA_TYPE === 'application/xhtml+xml' &&\n NAMESPACE === HTML_NAMESPACE\n ) {\n // Root of XHTML doc must contain xmlns declaration (see https://www.w3.org/TR/xhtml1/normative.html#strict)\n dirty =\n ' ' +\n dirty +\n '';\n }\n\n const dirtyPayload = trustedTypesPolicy\n ? trustedTypesPolicy.createHTML(dirty)\n : dirty;\n /*\n * Use the DOMParser API by default, fallback later if needs be\n * DOMParser not work for svg when has multiple root element.\n */\n if (NAMESPACE === HTML_NAMESPACE) {\n try {\n doc = new DOMParser().parseFromString(dirtyPayload, PARSER_MEDIA_TYPE);\n } catch (_) {}\n }\n\n /* Use createHTMLDocument in case DOMParser is not available */\n if (!doc || !doc.documentElement) {\n doc = implementation.createDocument(NAMESPACE, 'template', null);\n try {\n doc.documentElement.innerHTML = IS_EMPTY_INPUT\n ? emptyHTML\n : dirtyPayload;\n } catch (_) {\n // Syntax error if dirtyPayload is invalid xml\n }\n }\n\n const body = doc.body || doc.documentElement;\n\n if (dirty && leadingWhitespace) {\n body.insertBefore(\n document.createTextNode(leadingWhitespace),\n body.childNodes[0] || null\n );\n }\n\n /* Work on whole document or just its body */\n if (NAMESPACE === HTML_NAMESPACE) {\n return getElementsByTagName.call(\n doc,\n WHOLE_DOCUMENT ? 'html' : 'body'\n )[0];\n }\n\n return WHOLE_DOCUMENT ? doc.documentElement : body;\n };\n\n /**\n * Creates a NodeIterator object that you can use to traverse filtered lists of nodes or elements in a document.\n *\n * @param {Node} root The root element or node to start traversing on.\n * @return {NodeIterator} The created NodeIterator\n */\n const _createNodeIterator = function (root) {\n return createNodeIterator.call(\n root.ownerDocument || root,\n root,\n // eslint-disable-next-line no-bitwise\n NodeFilter.SHOW_ELEMENT |\n NodeFilter.SHOW_COMMENT |\n NodeFilter.SHOW_TEXT |\n NodeFilter.SHOW_PROCESSING_INSTRUCTION |\n NodeFilter.SHOW_CDATA_SECTION,\n null\n );\n };\n\n /**\n * _isClobbered\n *\n * @param {Node} elm element to check for clobbering attacks\n * @return {Boolean} true if clobbered, false if safe\n */\n const _isClobbered = function (elm) {\n return (\n elm instanceof HTMLFormElement &&\n (typeof elm.nodeName !== 'string' ||\n typeof elm.textContent !== 'string' ||\n typeof elm.removeChild !== 'function' ||\n !(elm.attributes instanceof NamedNodeMap) ||\n typeof elm.removeAttribute !== 'function' ||\n typeof elm.setAttribute !== 'function' ||\n typeof elm.namespaceURI !== 'string' ||\n typeof elm.insertBefore !== 'function' ||\n typeof elm.hasChildNodes !== 'function')\n );\n };\n\n /**\n * Checks whether the given object is a DOM node.\n *\n * @param {Node} object object to check whether it's a DOM node\n * @return {Boolean} true is object is a DOM node\n */\n const _isNode = function (object) {\n return typeof Node === 'function' && object instanceof Node;\n };\n\n /**\n * _executeHook\n * Execute user configurable hooks\n *\n * @param {String} entryPoint Name of the hook's entry point\n * @param {Node} currentNode node to work on with the hook\n * @param {Object} data additional hook parameters\n */\n const _executeHook = function (entryPoint, currentNode, data) {\n if (!hooks[entryPoint]) {\n return;\n }\n\n arrayForEach(hooks[entryPoint], (hook) => {\n hook.call(DOMPurify, currentNode, data, CONFIG);\n });\n };\n\n /**\n * _sanitizeElements\n *\n * @protect nodeName\n * @protect textContent\n * @protect removeChild\n *\n * @param {Node} currentNode to check for permission to exist\n * @return {Boolean} true if node was killed, false if left alive\n */\n const _sanitizeElements = function (currentNode) {\n let content = null;\n\n /* Execute a hook if present */\n _executeHook('beforeSanitizeElements', currentNode, null);\n\n /* Check if element is clobbered or can clobber */\n if (_isClobbered(currentNode)) {\n _forceRemove(currentNode);\n return true;\n }\n\n /* Now let's check the element's type and name */\n const tagName = transformCaseFunc(currentNode.nodeName);\n\n /* Execute a hook if present */\n _executeHook('uponSanitizeElement', currentNode, {\n tagName,\n allowedTags: ALLOWED_TAGS,\n });\n\n /* Detect mXSS attempts abusing namespace confusion */\n if (\n currentNode.hasChildNodes() &&\n !_isNode(currentNode.firstElementChild) &&\n regExpTest(/<[/\\w]/g, currentNode.innerHTML) &&\n regExpTest(/<[/\\w]/g, currentNode.textContent)\n ) {\n _forceRemove(currentNode);\n return true;\n }\n\n /* Remove any occurrence of processing instructions */\n if (currentNode.nodeType === NODE_TYPE.progressingInstruction) {\n _forceRemove(currentNode);\n return true;\n }\n\n /* Remove any kind of possibly harmful comments */\n if (\n SAFE_FOR_XML &&\n currentNode.nodeType === NODE_TYPE.comment &&\n regExpTest(/<[/\\w]/g, currentNode.data)\n ) {\n _forceRemove(currentNode);\n return true;\n }\n\n /* Remove element if anything forbids its presence */\n if (!ALLOWED_TAGS[tagName] || FORBID_TAGS[tagName]) {\n /* Check if we have a custom element to handle */\n if (!FORBID_TAGS[tagName] && _isBasicCustomElement(tagName)) {\n if (\n CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof RegExp &&\n regExpTest(CUSTOM_ELEMENT_HANDLING.tagNameCheck, tagName)\n ) {\n return false;\n }\n\n if (\n CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof Function &&\n CUSTOM_ELEMENT_HANDLING.tagNameCheck(tagName)\n ) {\n return false;\n }\n }\n\n /* Keep content except for bad-listed elements */\n if (KEEP_CONTENT && !FORBID_CONTENTS[tagName]) {\n const parentNode = getParentNode(currentNode) || currentNode.parentNode;\n const childNodes = getChildNodes(currentNode) || currentNode.childNodes;\n\n if (childNodes && parentNode) {\n const childCount = childNodes.length;\n\n for (let i = childCount - 1; i >= 0; --i) {\n const childClone = cloneNode(childNodes[i], true);\n childClone.__removalCount = (currentNode.__removalCount || 0) + 1;\n parentNode.insertBefore(childClone, getNextSibling(currentNode));\n }\n }\n }\n\n _forceRemove(currentNode);\n return true;\n }\n\n /* Check whether element has a valid namespace */\n if (currentNode instanceof Element && !_checkValidNamespace(currentNode)) {\n _forceRemove(currentNode);\n return true;\n }\n\n /* Make sure that older browsers don't get fallback-tag mXSS */\n if (\n (tagName === 'noscript' ||\n tagName === 'noembed' ||\n tagName === 'noframes') &&\n regExpTest(/<\\/no(script|embed|frames)/i, currentNode.innerHTML)\n ) {\n _forceRemove(currentNode);\n return true;\n }\n\n /* Sanitize element content to be template-safe */\n if (SAFE_FOR_TEMPLATES && currentNode.nodeType === NODE_TYPE.text) {\n /* Get the element's text content */\n content = currentNode.textContent;\n\n arrayForEach([MUSTACHE_EXPR, ERB_EXPR, TMPLIT_EXPR], (expr) => {\n content = stringReplace(content, expr, ' ');\n });\n\n if (currentNode.textContent !== content) {\n arrayPush(DOMPurify.removed, { element: currentNode.cloneNode() });\n currentNode.textContent = content;\n }\n }\n\n /* Execute a hook if present */\n _executeHook('afterSanitizeElements', currentNode, null);\n\n return false;\n };\n\n /**\n * _isValidAttribute\n *\n * @param {string} lcTag Lowercase tag name of containing element.\n * @param {string} lcName Lowercase attribute name.\n * @param {string} value Attribute value.\n * @return {Boolean} Returns true if `value` is valid, otherwise false.\n */\n // eslint-disable-next-line complexity\n const _isValidAttribute = function (lcTag, lcName, value) {\n /* Make sure attribute cannot clobber */\n if (\n SANITIZE_DOM &&\n (lcName === 'id' || lcName === 'name') &&\n (value in document || value in formElement)\n ) {\n return false;\n }\n\n /* Allow valid data-* attributes: At least one character after \"-\"\n (https://html.spec.whatwg.org/multipage/dom.html#embedding-custom-non-visible-data-with-the-data-*-attributes)\n XML-compatible (https://html.spec.whatwg.org/multipage/infrastructure.html#xml-compatible and http://www.w3.org/TR/xml/#d0e804)\n We don't need to check the value; it's always URI safe. */\n if (\n ALLOW_DATA_ATTR &&\n !FORBID_ATTR[lcName] &&\n regExpTest(DATA_ATTR, lcName)\n ) {\n // This attribute is safe\n } else if (ALLOW_ARIA_ATTR && regExpTest(ARIA_ATTR, lcName)) {\n // This attribute is safe\n /* Otherwise, check the name is permitted */\n } else if (!ALLOWED_ATTR[lcName] || FORBID_ATTR[lcName]) {\n if (\n // First condition does a very basic check if a) it's basically a valid custom element tagname AND\n // b) if the tagName passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.tagNameCheck\n // and c) if the attribute name passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.attributeNameCheck\n (_isBasicCustomElement(lcTag) &&\n ((CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof RegExp &&\n regExpTest(CUSTOM_ELEMENT_HANDLING.tagNameCheck, lcTag)) ||\n (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof Function &&\n CUSTOM_ELEMENT_HANDLING.tagNameCheck(lcTag))) &&\n ((CUSTOM_ELEMENT_HANDLING.attributeNameCheck instanceof RegExp &&\n regExpTest(CUSTOM_ELEMENT_HANDLING.attributeNameCheck, lcName)) ||\n (CUSTOM_ELEMENT_HANDLING.attributeNameCheck instanceof Function &&\n CUSTOM_ELEMENT_HANDLING.attributeNameCheck(lcName)))) ||\n // Alternative, second condition checks if it's an `is`-attribute, AND\n // the value passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.tagNameCheck\n (lcName === 'is' &&\n CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements &&\n ((CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof RegExp &&\n regExpTest(CUSTOM_ELEMENT_HANDLING.tagNameCheck, value)) ||\n (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof Function &&\n CUSTOM_ELEMENT_HANDLING.tagNameCheck(value))))\n ) {\n // If user has supplied a regexp or function in CUSTOM_ELEMENT_HANDLING.tagNameCheck, we need to also allow derived custom elements using the same tagName test.\n // Additionally, we need to allow attributes passing the CUSTOM_ELEMENT_HANDLING.attributeNameCheck user has configured, as custom elements can define these at their own discretion.\n } else {\n return false;\n }\n /* Check value is safe. First, is attr inert? If so, is safe */\n } else if (URI_SAFE_ATTRIBUTES[lcName]) {\n // This attribute is safe\n /* Check no script, data or unknown possibly unsafe URI\n unless we know URI values are safe for that attribute */\n } else if (\n regExpTest(IS_ALLOWED_URI, stringReplace(value, ATTR_WHITESPACE, ''))\n ) {\n // This attribute is safe\n /* Keep image data URIs alive if src/xlink:href is allowed */\n /* Further prevent gadget XSS for dynamically built script tags */\n } else if (\n (lcName === 'src' || lcName === 'xlink:href' || lcName === 'href') &&\n lcTag !== 'script' &&\n stringIndexOf(value, 'data:') === 0 &&\n DATA_URI_TAGS[lcTag]\n ) {\n // This attribute is safe\n /* Allow unknown protocols: This provides support for links that\n are handled by protocol handlers which may be unknown ahead of\n time, e.g. fb:, spotify: */\n } else if (\n ALLOW_UNKNOWN_PROTOCOLS &&\n !regExpTest(IS_SCRIPT_OR_DATA, stringReplace(value, ATTR_WHITESPACE, ''))\n ) {\n // This attribute is safe\n /* Check for binary attributes */\n } else if (value) {\n return false;\n } else {\n // Binary attributes are safe at this point\n /* Anything else, presume unsafe, do not add it back */\n }\n\n return true;\n };\n\n /**\n * _isBasicCustomElement\n * checks if at least one dash is included in tagName, and it's not the first char\n * for more sophisticated checking see https://github.com/sindresorhus/validate-element-name\n *\n * @param {string} tagName name of the tag of the node to sanitize\n * @returns {boolean} Returns true if the tag name meets the basic criteria for a custom element, otherwise false.\n */\n const _isBasicCustomElement = function (tagName) {\n return tagName !== 'annotation-xml' && stringMatch(tagName, CUSTOM_ELEMENT);\n };\n\n /**\n * _sanitizeAttributes\n *\n * @protect attributes\n * @protect nodeName\n * @protect removeAttribute\n * @protect setAttribute\n *\n * @param {Node} currentNode to sanitize\n */\n const _sanitizeAttributes = function (currentNode) {\n /* Execute a hook if present */\n _executeHook('beforeSanitizeAttributes', currentNode, null);\n\n const { attributes } = currentNode;\n\n /* Check if we have attributes; if not we might have a text node */\n if (!attributes) {\n return;\n }\n\n const hookEvent = {\n attrName: '',\n attrValue: '',\n keepAttr: true,\n allowedAttributes: ALLOWED_ATTR,\n };\n let l = attributes.length;\n\n /* Go backwards over all attributes; safely remove bad ones */\n while (l--) {\n const attr = attributes[l];\n const { name, namespaceURI, value: attrValue } = attr;\n const lcName = transformCaseFunc(name);\n\n let value = name === 'value' ? attrValue : stringTrim(attrValue);\n\n /* Execute a hook if present */\n hookEvent.attrName = lcName;\n hookEvent.attrValue = value;\n hookEvent.keepAttr = true;\n hookEvent.forceKeepAttr = undefined; // Allows developers to see this is a property they can set\n _executeHook('uponSanitizeAttribute', currentNode, hookEvent);\n value = hookEvent.attrValue;\n\n /* Did the hooks approve of the attribute? */\n if (hookEvent.forceKeepAttr) {\n continue;\n }\n\n /* Remove attribute */\n _removeAttribute(name, currentNode);\n\n /* Did the hooks approve of the attribute? */\n if (!hookEvent.keepAttr) {\n continue;\n }\n\n /* Work around a security issue in jQuery 3.0 */\n if (!ALLOW_SELF_CLOSE_IN_ATTR && regExpTest(/\\/>/i, value)) {\n _removeAttribute(name, currentNode);\n continue;\n }\n\n /* Sanitize attribute content to be template-safe */\n if (SAFE_FOR_TEMPLATES) {\n arrayForEach([MUSTACHE_EXPR, ERB_EXPR, TMPLIT_EXPR], (expr) => {\n value = stringReplace(value, expr, ' ');\n });\n }\n\n /* Is `value` valid for this attribute? */\n const lcTag = transformCaseFunc(currentNode.nodeName);\n if (!_isValidAttribute(lcTag, lcName, value)) {\n continue;\n }\n\n /* Full DOM Clobbering protection via namespace isolation,\n * Prefix id and name attributes with `user-content-`\n */\n if (SANITIZE_NAMED_PROPS && (lcName === 'id' || lcName === 'name')) {\n // Remove the attribute with this value\n _removeAttribute(name, currentNode);\n\n // Prefix the value and later re-create the attribute with the sanitized value\n value = SANITIZE_NAMED_PROPS_PREFIX + value;\n }\n\n /* Work around a security issue with comments inside attributes */\n if (SAFE_FOR_XML && regExpTest(/((--!?|])>)|<\\/(style|title)/i, value)) {\n _removeAttribute(name, currentNode);\n continue;\n }\n\n /* Handle attributes that require Trusted Types */\n if (\n trustedTypesPolicy &&\n typeof trustedTypes === 'object' &&\n typeof trustedTypes.getAttributeType === 'function'\n ) {\n if (namespaceURI) {\n /* Namespaces are not yet supported, see https://bugs.chromium.org/p/chromium/issues/detail?id=1305293 */\n } else {\n switch (trustedTypes.getAttributeType(lcTag, lcName)) {\n case 'TrustedHTML': {\n value = trustedTypesPolicy.createHTML(value);\n break;\n }\n\n case 'TrustedScriptURL': {\n value = trustedTypesPolicy.createScriptURL(value);\n break;\n }\n\n default: {\n break;\n }\n }\n }\n }\n\n /* Handle invalid data-* attribute set by try-catching it */\n try {\n if (namespaceURI) {\n currentNode.setAttributeNS(namespaceURI, name, value);\n } else {\n /* Fallback to setAttribute() for browser-unrecognized namespaces e.g. \"x-schema\". */\n currentNode.setAttribute(name, value);\n }\n\n if (_isClobbered(currentNode)) {\n _forceRemove(currentNode);\n } else {\n arrayPop(DOMPurify.removed);\n }\n } catch (_) {}\n }\n\n /* Execute a hook if present */\n _executeHook('afterSanitizeAttributes', currentNode, null);\n };\n\n /**\n * _sanitizeShadowDOM\n *\n * @param {DocumentFragment} fragment to iterate over recursively\n */\n const _sanitizeShadowDOM = function (fragment) {\n let shadowNode = null;\n const shadowIterator = _createNodeIterator(fragment);\n\n /* Execute a hook if present */\n _executeHook('beforeSanitizeShadowDOM', fragment, null);\n\n while ((shadowNode = shadowIterator.nextNode())) {\n /* Execute a hook if present */\n _executeHook('uponSanitizeShadowNode', shadowNode, null);\n\n /* Sanitize tags and elements */\n if (_sanitizeElements(shadowNode)) {\n continue;\n }\n\n /* Deep shadow DOM detected */\n if (shadowNode.content instanceof DocumentFragment) {\n _sanitizeShadowDOM(shadowNode.content);\n }\n\n /* Check attributes, sanitize if necessary */\n _sanitizeAttributes(shadowNode);\n }\n\n /* Execute a hook if present */\n _executeHook('afterSanitizeShadowDOM', fragment, null);\n };\n\n /**\n * Sanitize\n * Public method providing core sanitation functionality\n *\n * @param {String|Node} dirty string or DOM node\n * @param {Object} cfg object\n */\n // eslint-disable-next-line complexity\n DOMPurify.sanitize = function (dirty, cfg = {}) {\n let body = null;\n let importedNode = null;\n let currentNode = null;\n let returnNode = null;\n /* Make sure we have a string to sanitize.\n DO NOT return early, as this will return the wrong type if\n the user has requested a DOM object rather than a string */\n IS_EMPTY_INPUT = !dirty;\n if (IS_EMPTY_INPUT) {\n dirty = '';\n }\n\n /* Stringify, in case dirty is an object */\n if (typeof dirty !== 'string' && !_isNode(dirty)) {\n if (typeof dirty.toString === 'function') {\n dirty = dirty.toString();\n if (typeof dirty !== 'string') {\n throw typeErrorCreate('dirty is not a string, aborting');\n }\n } else {\n throw typeErrorCreate('toString is not a function');\n }\n }\n\n /* Return dirty HTML if DOMPurify cannot run */\n if (!DOMPurify.isSupported) {\n return dirty;\n }\n\n /* Assign config vars */\n if (!SET_CONFIG) {\n _parseConfig(cfg);\n }\n\n /* Clean up removed elements */\n DOMPurify.removed = [];\n\n /* Check if dirty is correctly typed for IN_PLACE */\n if (typeof dirty === 'string') {\n IN_PLACE = false;\n }\n\n if (IN_PLACE) {\n /* Do some early pre-sanitization to avoid unsafe root nodes */\n if (dirty.nodeName) {\n const tagName = transformCaseFunc(dirty.nodeName);\n if (!ALLOWED_TAGS[tagName] || FORBID_TAGS[tagName]) {\n throw typeErrorCreate(\n 'root node is forbidden and cannot be sanitized in-place'\n );\n }\n }\n } else if (dirty instanceof Node) {\n /* If dirty is a DOM element, append to an empty document to avoid\n elements being stripped by the parser */\n body = _initDocument('');\n importedNode = body.ownerDocument.importNode(dirty, true);\n if (\n importedNode.nodeType === NODE_TYPE.element &&\n importedNode.nodeName === 'BODY'\n ) {\n /* Node is already a body, use as is */\n body = importedNode;\n } else if (importedNode.nodeName === 'HTML') {\n body = importedNode;\n } else {\n // eslint-disable-next-line unicorn/prefer-dom-node-append\n body.appendChild(importedNode);\n }\n } else {\n /* Exit directly if we have nothing to do */\n if (\n !RETURN_DOM &&\n !SAFE_FOR_TEMPLATES &&\n !WHOLE_DOCUMENT &&\n // eslint-disable-next-line unicorn/prefer-includes\n dirty.indexOf('<') === -1\n ) {\n return trustedTypesPolicy && RETURN_TRUSTED_TYPE\n ? trustedTypesPolicy.createHTML(dirty)\n : dirty;\n }\n\n /* Initialize the document to work on */\n body = _initDocument(dirty);\n\n /* Check we have a DOM node from the data */\n if (!body) {\n return RETURN_DOM ? null : RETURN_TRUSTED_TYPE ? emptyHTML : '';\n }\n }\n\n /* Remove first element node (ours) if FORCE_BODY is set */\n if (body && FORCE_BODY) {\n _forceRemove(body.firstChild);\n }\n\n /* Get node iterator */\n const nodeIterator = _createNodeIterator(IN_PLACE ? dirty : body);\n\n /* Now start iterating over the created document */\n while ((currentNode = nodeIterator.nextNode())) {\n /* Sanitize tags and elements */\n if (_sanitizeElements(currentNode)) {\n continue;\n }\n\n /* Shadow DOM detected, sanitize it */\n if (currentNode.content instanceof DocumentFragment) {\n _sanitizeShadowDOM(currentNode.content);\n }\n\n /* Check attributes, sanitize if necessary */\n _sanitizeAttributes(currentNode);\n }\n\n /* If we sanitized `dirty` in-place, return it. */\n if (IN_PLACE) {\n return dirty;\n }\n\n /* Return sanitized string or DOM */\n if (RETURN_DOM) {\n if (RETURN_DOM_FRAGMENT) {\n returnNode = createDocumentFragment.call(body.ownerDocument);\n\n while (body.firstChild) {\n // eslint-disable-next-line unicorn/prefer-dom-node-append\n returnNode.appendChild(body.firstChild);\n }\n } else {\n returnNode = body;\n }\n\n if (ALLOWED_ATTR.shadowroot || ALLOWED_ATTR.shadowrootmode) {\n /*\n AdoptNode() is not used because internal state is not reset\n (e.g. the past names map of a HTMLFormElement), this is safe\n in theory but we would rather not risk another attack vector.\n The state that is cloned by importNode() is explicitly defined\n by the specs.\n */\n returnNode = importNode.call(originalDocument, returnNode, true);\n }\n\n return returnNode;\n }\n\n let serializedHTML = WHOLE_DOCUMENT ? body.outerHTML : body.innerHTML;\n\n /* Serialize doctype if allowed */\n if (\n WHOLE_DOCUMENT &&\n ALLOWED_TAGS['!doctype'] &&\n body.ownerDocument &&\n body.ownerDocument.doctype &&\n body.ownerDocument.doctype.name &&\n regExpTest(EXPRESSIONS.DOCTYPE_NAME, body.ownerDocument.doctype.name)\n ) {\n serializedHTML =\n '\\n' + serializedHTML;\n }\n\n /* Sanitize final string template-safe */\n if (SAFE_FOR_TEMPLATES) {\n arrayForEach([MUSTACHE_EXPR, ERB_EXPR, TMPLIT_EXPR], (expr) => {\n serializedHTML = stringReplace(serializedHTML, expr, ' ');\n });\n }\n\n return trustedTypesPolicy && RETURN_TRUSTED_TYPE\n ? trustedTypesPolicy.createHTML(serializedHTML)\n : serializedHTML;\n };\n\n /**\n * Public method to set the configuration once\n * setConfig\n *\n * @param {Object} cfg configuration object\n */\n DOMPurify.setConfig = function (cfg = {}) {\n _parseConfig(cfg);\n SET_CONFIG = true;\n };\n\n /**\n * Public method to remove the configuration\n * clearConfig\n *\n */\n DOMPurify.clearConfig = function () {\n CONFIG = null;\n SET_CONFIG = false;\n };\n\n /**\n * Public method to check if an attribute value is valid.\n * Uses last set config, if any. Otherwise, uses config defaults.\n * isValidAttribute\n *\n * @param {String} tag Tag name of containing element.\n * @param {String} attr Attribute name.\n * @param {String} value Attribute value.\n * @return {Boolean} Returns true if `value` is valid. 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\ No newline at end of file diff --git a/dist/purify.js b/dist/purify.js index 5b079502b..009b69fef 100644 --- a/dist/purify.js +++ b/dist/purify.js @@ -1,4 +1,4 @@ -/*! @license DOMPurify 3.1.7 | (c) Cure53 and other contributors | Released under the Apache license 2.0 and Mozilla Public License 2.0 | github.com/cure53/DOMPurify/blob/3.1.7/LICENSE */ +/*! @license DOMPurify 3.2.0 | (c) Cure53 and other contributors | Released under the Apache license 2.0 and Mozilla Public License 2.0 | github.com/cure53/DOMPurify/blob/3.2.0/LICENSE */ (function (global, factory) { typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() : @@ -54,12 +54,11 @@ const objectHasOwnProperty = unapply(Object.prototype.hasOwnProperty); const regExpTest = unapply(RegExp.prototype.test); const typeErrorCreate = unconstruct(TypeError); - /** * Creates a new function that calls the given function with a specified thisArg and arguments. * - * @param {Function} func - The function to be wrapped and called. - * @returns {Function} A new function that calls the given function with a specified thisArg and arguments. + * @param func - The function to be wrapped and called. + * @returns A new function that calls the given function with a specified thisArg and arguments. */ function unapply(func) { return function (thisArg) { @@ -69,12 +68,11 @@ return apply(func, thisArg, args); }; } - /** * Creates a new function that constructs an instance of the given constructor function with the provided arguments. * - * @param {Function} func - The constructor function to be wrapped and called. - * @returns {Function} A new function that constructs an instance of the given constructor function with the provided arguments. + * @param func - The constructor function to be wrapped and called. + * @returns A new function that constructs an instance of the given constructor function with the provided arguments. */ function unconstruct(func) { return function () { @@ -84,14 +82,13 @@ return construct(func, args); }; } - /** * Add properties to a lookup table * - * @param {Object} set - The set to which elements will be added. - * @param {Array} array - The array containing elements to be added to the set. - * @param {Function} transformCaseFunc - An optional function to transform the case of each element before adding to the set. - * @returns {Object} The modified set with added elements. + * @param set - The set to which elements will be added. + * @param array - The array containing elements to be added to the set. + * @param transformCaseFunc - An optional function to transform the case of each element before adding to the set. + * @returns The modified set with added elements. */ function addToSet(set, array) { let transformCaseFunc = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : stringToLowerCase; @@ -118,12 +115,11 @@ } return set; } - /** * Clean up an array to harden against CSPP * - * @param {Array} array - The array to be cleaned. - * @returns {Array} The cleaned version of the array + * @param array - The array to be cleaned. + * @returns The cleaned version of the array */ function cleanArray(array) { for (let index = 0; index < array.length; index++) { @@ -134,12 +130,11 @@ } return array; } - /** * Shallow clone an object * - * @param {Object} object - The object to be cloned. - * @returns {Object} A new object that copies the original. + * @param object - The object to be cloned. + * @returns A new object that copies the original. */ function clone(object) { const newObject = create(null); @@ -157,13 +152,12 @@ } return newObject; } - /** * This method automatically checks if the prop is function or getter and behaves accordingly. * - * @param {Object} object - The object to look up the getter function in its prototype chain. - * @param {String} prop - The property name for which to find the getter function. - * @returns {Function} The getter function found in the prototype chain or a fallback function. + * @param object - The object to look up the getter function in its prototype chain. + * @param prop - The property name for which to find the getter function. + * @returns The getter function found in the prototype chain or a fallback function. */ function lookupGetter(object, prop) { while (object !== null) { @@ -185,18 +179,15 @@ } const html$1 = freeze(['a', 'abbr', 'acronym', 'address', 'area', 'article', 'aside', 'audio', 'b', 'bdi', 'bdo', 'big', 'blink', 'blockquote', 'body', 'br', 'button', 'canvas', 'caption', 'center', 'cite', 'code', 'col', 'colgroup', 'content', 'data', 'datalist', 'dd', 'decorator', 'del', 'details', 'dfn', 'dialog', 'dir', 'div', 'dl', 'dt', 'element', 'em', 'fieldset', 'figcaption', 'figure', 'font', 'footer', 'form', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'head', 'header', 'hgroup', 'hr', 'html', 'i', 'img', 'input', 'ins', 'kbd', 'label', 'legend', 'li', 'main', 'map', 'mark', 'marquee', 'menu', 'menuitem', 'meter', 'nav', 'nobr', 'ol', 'optgroup', 'option', 'output', 'p', 'picture', 'pre', 'progress', 'q', 'rp', 'rt', 'ruby', 's', 'samp', 'section', 'select', 'shadow', 'small', 'source', 'spacer', 'span', 'strike', 'strong', 'style', 'sub', 'summary', 'sup', 'table', 'tbody', 'td', 'template', 'textarea', 'tfoot', 'th', 'thead', 'time', 'tr', 'track', 'tt', 'u', 'ul', 'var', 'video', 'wbr']); - // SVG const svg$1 = freeze(['svg', 'a', 'altglyph', 'altglyphdef', 'altglyphitem', 'animatecolor', 'animatemotion', 'animatetransform', 'circle', 'clippath', 'defs', 'desc', 'ellipse', 'filter', 'font', 'g', 'glyph', 'glyphref', 'hkern', 'image', 'line', 'lineargradient', 'marker', 'mask', 'metadata', 'mpath', 'path', 'pattern', 'polygon', 'polyline', 'radialgradient', 'rect', 'stop', 'style', 'switch', 'symbol', 'text', 'textpath', 'title', 'tref', 'tspan', 'view', 'vkern']); const svgFilters = freeze(['feBlend', 'feColorMatrix', 'feComponentTransfer', 'feComposite', 'feConvolveMatrix', 'feDiffuseLighting', 'feDisplacementMap', 'feDistantLight', 'feDropShadow', 'feFlood', 'feFuncA', 'feFuncB', 'feFuncG', 'feFuncR', 'feGaussianBlur', 'feImage', 'feMerge', 'feMergeNode', 'feMorphology', 'feOffset', 'fePointLight', 'feSpecularLighting', 'feSpotLight', 'feTile', 'feTurbulence']); - // List of SVG elements that are disallowed by default. // We still need to know them so that we can do namespace // checks properly in case one wants to add them to // allow-list. const svgDisallowed = freeze(['animate', 'color-profile', 'cursor', 'discard', 'font-face', 'font-face-format', 'font-face-name', 'font-face-src', 'font-face-uri', 'foreignobject', 'hatch', 'hatchpath', 'mesh', 'meshgradient', 'meshpatch', 'meshrow', 'missing-glyph', 'script', 'set', 'solidcolor', 'unknown', 'use']); const mathMl$1 = freeze(['math', 'menclose', 'merror', 'mfenced', 'mfrac', 'mglyph', 'mi', 'mlabeledtr', 'mmultiscripts', 'mn', 'mo', 'mover', 'mpadded', 'mphantom', 'mroot', 'mrow', 'ms', 'mspace', 'msqrt', 'mstyle', 'msub', 'msup', 'msubsup', 'mtable', 'mtd', 'mtext', 'mtr', 'munder', 'munderover', 'mprescripts']); - // Similarly to SVG, we want to know all MathML elements, // even those that we disallow by default. const mathMlDisallowed = freeze(['maction', 'maligngroup', 'malignmark', 'mlongdiv', 'mscarries', 'mscarry', 'msgroup', 'mstack', 'msline', 'msrow', 'semantics', 'annotation', 'annotation-xml', 'mprescripts', 'none']); @@ -223,18 +214,19 @@ var EXPRESSIONS = /*#__PURE__*/Object.freeze({ __proto__: null, - MUSTACHE_EXPR: MUSTACHE_EXPR, - ERB_EXPR: ERB_EXPR, - TMPLIT_EXPR: TMPLIT_EXPR, - DATA_ATTR: DATA_ATTR, ARIA_ATTR: ARIA_ATTR, - IS_ALLOWED_URI: IS_ALLOWED_URI, - IS_SCRIPT_OR_DATA: IS_SCRIPT_OR_DATA, ATTR_WHITESPACE: ATTR_WHITESPACE, + CUSTOM_ELEMENT: CUSTOM_ELEMENT, + DATA_ATTR: DATA_ATTR, DOCTYPE_NAME: DOCTYPE_NAME, - CUSTOM_ELEMENT: CUSTOM_ELEMENT + ERB_EXPR: ERB_EXPR, + IS_ALLOWED_URI: IS_ALLOWED_URI, + IS_SCRIPT_OR_DATA: IS_SCRIPT_OR_DATA, + MUSTACHE_EXPR: MUSTACHE_EXPR, + TMPLIT_EXPR: TMPLIT_EXPR }); + /* eslint-disable @typescript-eslint/indent */ // https://developer.mozilla.org/en-US/docs/Web/API/Node/nodeType const NODE_TYPE = { element: 1, @@ -255,20 +247,18 @@ const getGlobal = function getGlobal() { return typeof window === 'undefined' ? null : window; }; - /** * Creates a no-op policy for internal use only. * Don't export this function outside this module! - * @param {TrustedTypePolicyFactory} trustedTypes The policy factory. - * @param {HTMLScriptElement} purifyHostElement The Script element used to load DOMPurify (to determine policy name suffix). - * @return {TrustedTypePolicy} The policy created (or null, if Trusted Types + * @param trustedTypes The policy factory. + * @param purifyHostElement The Script element used to load DOMPurify (to determine policy name suffix). + * @return The policy created (or null, if Trusted Types * are not supported or creating the policy failed). */ const _createTrustedTypesPolicy = function _createTrustedTypesPolicy(trustedTypes, purifyHostElement) { if (typeof trustedTypes !== 'object' || typeof trustedTypes.createPolicy !== 'function') { return null; } - // Allow the callers to control the unique policy name // by adding a data-tt-policy-suffix to the script element with the DOMPurify. // Policy creation with duplicate names throws in Trusted Types. @@ -298,17 +288,7 @@ function createDOMPurify() { let window = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : getGlobal(); const DOMPurify = root => createDOMPurify(root); - - /** - * Version label, exposed for easier checks - * if DOMPurify is up to date or not - */ - DOMPurify.version = '3.1.7'; - - /** - * Array of elements that DOMPurify removed during sanitation. - * Empty if nothing was removed. - */ + DOMPurify.version = '3.2.0'; DOMPurify.removed = []; if (!window || !window.document || window.document.nodeType !== NODE_TYPE.document) { // Not running in a browser, provide a factory function @@ -338,7 +318,6 @@ const getNextSibling = lookupGetter(ElementPrototype, 'nextSibling'); const getChildNodes = lookupGetter(ElementPrototype, 'childNodes'); const getParentNode = lookupGetter(ElementPrototype, 'parentNode'); - // As per issue #47, the web-components registry is inherited by a // new document created via createHTMLDocument. As per the spec // (http://w3c.github.io/webcomponents/spec/custom/#creating-and-passing-registries) @@ -363,7 +342,6 @@ importNode } = originalDocument; let hooks = {}; - /** * Expose whether this browser supports running the full DOMPurify. */ @@ -381,22 +359,18 @@ let { IS_ALLOWED_URI: IS_ALLOWED_URI$1 } = EXPRESSIONS; - /** * We consider the elements and attributes below to be safe. Ideally * don't add any new ones but feel free to remove unwanted ones. */ - /* allowed element names */ let ALLOWED_TAGS = null; const DEFAULT_ALLOWED_TAGS = addToSet({}, [...html$1, ...svg$1, ...svgFilters, ...mathMl$1, ...text]); - /* Allowed attribute names */ let ALLOWED_ATTR = null; const DEFAULT_ALLOWED_ATTR = addToSet({}, [...html, ...svg, ...mathMl, ...xml]); - /* - * Configure how DOMPUrify should handle custom elements and their attributes as well as customized built-in elements. + * Configure how DOMPurify should handle custom elements and their attributes as well as customized built-in elements. * @property {RegExp|Function|null} tagNameCheck one of [null, regexPattern, predicate]. Default: `null` (disallow any custom elements) * @property {RegExp|Function|null} attributeNameCheck one of [null, regexPattern, predicate]. Default: `null` (disallow any attributes not on the allow list) * @property {boolean} allowCustomizedBuiltInElements allow custom elements derived from built-ins if they pass CUSTOM_ELEMENT_HANDLING.tagNameCheck. Default: `false`. @@ -421,65 +395,49 @@ value: false } })); - /* Explicitly forbidden tags (overrides ALLOWED_TAGS/ADD_TAGS) */ let FORBID_TAGS = null; - /* Explicitly forbidden attributes (overrides ALLOWED_ATTR/ADD_ATTR) */ let FORBID_ATTR = null; - /* Decide if ARIA attributes are okay */ let ALLOW_ARIA_ATTR = true; - /* Decide if custom data attributes are okay */ let ALLOW_DATA_ATTR = true; - /* Decide if unknown protocols are okay */ let ALLOW_UNKNOWN_PROTOCOLS = false; - /* Decide if self-closing tags in attributes are allowed. * Usually removed due to a mXSS issue in jQuery 3.0 */ let ALLOW_SELF_CLOSE_IN_ATTR = true; - /* Output should be safe for common template engines. * This means, DOMPurify removes data attributes, mustaches and ERB */ let SAFE_FOR_TEMPLATES = false; - /* Output should be safe even for XML used within HTML and alike. * This means, DOMPurify removes comments when containing risky content. */ let SAFE_FOR_XML = true; - /* Decide if document with ... should be returned */ let WHOLE_DOCUMENT = false; - /* Track whether config is already set on this instance of DOMPurify. */ let SET_CONFIG = false; - /* Decide if all elements (e.g. style, script) must be children of * document.body. By default, browsers might move them to document.head */ let FORCE_BODY = false; - /* Decide if a DOM `HTMLBodyElement` should be returned, instead of a html * string (or a TrustedHTML object if Trusted Types are supported). * If `WHOLE_DOCUMENT` is enabled a `HTMLHtmlElement` will be returned instead */ let RETURN_DOM = false; - /* Decide if a DOM `DocumentFragment` should be returned, instead of a html * string (or a TrustedHTML object if Trusted Types are supported) */ let RETURN_DOM_FRAGMENT = false; - /* Try to return a Trusted Type object instead of a string, return a string in * case Trusted Types are not supported */ let RETURN_TRUSTED_TYPE = false; - /* Output should be free from DOM clobbering attacks? * This sanitizes markups named with colliding, clobberable built-in DOM APIs. */ let SANITIZE_DOM = true; - /* Achieve full DOM Clobbering protection by isolating the namespace of named * properties and JS variables, mitigating attacks that abuse the HTML/DOM spec rules. * @@ -495,25 +453,19 @@ */ let SANITIZE_NAMED_PROPS = false; const SANITIZE_NAMED_PROPS_PREFIX = 'user-content-'; - /* Keep element content when removing element? */ let KEEP_CONTENT = true; - /* If a `Node` is passed to sanitize(), then performs sanitization in-place instead * of importing it into a new Document and returning a sanitized copy */ let IN_PLACE = false; - /* Allow usage of profiles like html, svg and mathMl */ let USE_PROFILES = {}; - /* Tags to ignore content of when KEEP_CONTENT is true */ let FORBID_CONTENTS = null; const DEFAULT_FORBID_CONTENTS = addToSet({}, ['annotation-xml', 'audio', 'colgroup', 'desc', 'foreignobject', 'head', 'iframe', 'math', 'mi', 'mn', 'mo', 'ms', 'mtext', 'noembed', 'noframes', 'noscript', 'plaintext', 'script', 'style', 'svg', 'template', 'thead', 'title', 'video', 'xmp']); - /* Tags that are safe for data: URIs */ let DATA_URI_TAGS = null; const DEFAULT_DATA_URI_TAGS = addToSet({}, ['audio', 'video', 'img', 'source', 'image', 'track']); - /* Attributes safe for values like "javascript:" */ let URI_SAFE_ATTRIBUTES = null; const DEFAULT_URI_SAFE_ATTRIBUTES = addToSet({}, ['alt', 'class', 'for', 'id', 'label', 'name', 'pattern', 'placeholder', 'role', 'summary', 'title', 'value', 'style', 'xmlns']); @@ -523,32 +475,33 @@ /* Document namespace */ let NAMESPACE = HTML_NAMESPACE; let IS_EMPTY_INPUT = false; - /* Allowed XHTML+XML namespaces */ let ALLOWED_NAMESPACES = null; const DEFAULT_ALLOWED_NAMESPACES = addToSet({}, [MATHML_NAMESPACE, SVG_NAMESPACE, HTML_NAMESPACE], stringToString); - + let MATHML_TEXT_INTEGRATION_POINTS = addToSet({}, ['mi', 'mo', 'mn', 'ms', 'mtext']); + let HTML_INTEGRATION_POINTS = addToSet({}, ['annotation-xml']); + // Certain elements are allowed in both SVG and HTML + // namespace. We need to specify them explicitly + // so that they don't get erroneously deleted from + // HTML namespace. + const COMMON_SVG_AND_HTML_ELEMENTS = addToSet({}, ['title', 'style', 'font', 'a', 'script']); /* Parsing of strict XHTML documents */ let PARSER_MEDIA_TYPE = null; const SUPPORTED_PARSER_MEDIA_TYPES = ['application/xhtml+xml', 'text/html']; const DEFAULT_PARSER_MEDIA_TYPE = 'text/html'; let transformCaseFunc = null; - /* Keep a reference to config to pass to hooks */ let CONFIG = null; - /* Ideally, do not touch anything below this line */ /* ______________________________________________ */ - const formElement = document.createElement('form'); const isRegexOrFunction = function isRegexOrFunction(testValue) { return testValue instanceof RegExp || testValue instanceof Function; }; - /** * _parseConfig * - * @param {Object} cfg optional config literal + * @param cfg optional config literal */ // eslint-disable-next-line complexity const _parseConfig = function _parseConfig() { @@ -556,39 +509,23 @@ if (CONFIG && CONFIG === cfg) { return; } - /* Shield configuration object from tampering */ if (!cfg || typeof cfg !== 'object') { cfg = {}; } - /* Shield configuration object from prototype pollution */ cfg = clone(cfg); PARSER_MEDIA_TYPE = // eslint-disable-next-line unicorn/prefer-includes SUPPORTED_PARSER_MEDIA_TYPES.indexOf(cfg.PARSER_MEDIA_TYPE) === -1 ? DEFAULT_PARSER_MEDIA_TYPE : cfg.PARSER_MEDIA_TYPE; - // HTML tags and attributes are not case-sensitive, converting to lowercase. Keeping XHTML as is. transformCaseFunc = PARSER_MEDIA_TYPE === 'application/xhtml+xml' ? stringToString : stringToLowerCase; - /* Set configuration parameters */ ALLOWED_TAGS = objectHasOwnProperty(cfg, 'ALLOWED_TAGS') ? addToSet({}, cfg.ALLOWED_TAGS, transformCaseFunc) : DEFAULT_ALLOWED_TAGS; ALLOWED_ATTR = objectHasOwnProperty(cfg, 'ALLOWED_ATTR') ? addToSet({}, cfg.ALLOWED_ATTR, transformCaseFunc) : DEFAULT_ALLOWED_ATTR; ALLOWED_NAMESPACES = objectHasOwnProperty(cfg, 'ALLOWED_NAMESPACES') ? addToSet({}, cfg.ALLOWED_NAMESPACES, stringToString) : DEFAULT_ALLOWED_NAMESPACES; - URI_SAFE_ATTRIBUTES = objectHasOwnProperty(cfg, 'ADD_URI_SAFE_ATTR') ? addToSet(clone(DEFAULT_URI_SAFE_ATTRIBUTES), - // eslint-disable-line indent - cfg.ADD_URI_SAFE_ATTR, - // eslint-disable-line indent - transformCaseFunc // eslint-disable-line indent - ) // eslint-disable-line indent - : DEFAULT_URI_SAFE_ATTRIBUTES; - DATA_URI_TAGS = objectHasOwnProperty(cfg, 'ADD_DATA_URI_TAGS') ? addToSet(clone(DEFAULT_DATA_URI_TAGS), - // eslint-disable-line indent - cfg.ADD_DATA_URI_TAGS, - // eslint-disable-line indent - transformCaseFunc // eslint-disable-line indent - ) // eslint-disable-line indent - : DEFAULT_DATA_URI_TAGS; + URI_SAFE_ATTRIBUTES = objectHasOwnProperty(cfg, 'ADD_URI_SAFE_ATTR') ? addToSet(clone(DEFAULT_URI_SAFE_ATTRIBUTES), cfg.ADD_URI_SAFE_ATTR, transformCaseFunc) : DEFAULT_URI_SAFE_ATTRIBUTES; + DATA_URI_TAGS = objectHasOwnProperty(cfg, 'ADD_DATA_URI_TAGS') ? addToSet(clone(DEFAULT_DATA_URI_TAGS), cfg.ADD_DATA_URI_TAGS, transformCaseFunc) : DEFAULT_DATA_URI_TAGS; FORBID_CONTENTS = objectHasOwnProperty(cfg, 'FORBID_CONTENTS') ? addToSet({}, cfg.FORBID_CONTENTS, transformCaseFunc) : DEFAULT_FORBID_CONTENTS; FORBID_TAGS = objectHasOwnProperty(cfg, 'FORBID_TAGS') ? addToSet({}, cfg.FORBID_TAGS, transformCaseFunc) : {}; FORBID_ATTR = objectHasOwnProperty(cfg, 'FORBID_ATTR') ? addToSet({}, cfg.FORBID_ATTR, transformCaseFunc) : {}; @@ -610,6 +547,8 @@ IN_PLACE = cfg.IN_PLACE || false; // Default false IS_ALLOWED_URI$1 = cfg.ALLOWED_URI_REGEXP || IS_ALLOWED_URI; NAMESPACE = cfg.NAMESPACE || HTML_NAMESPACE; + MATHML_TEXT_INTEGRATION_POINTS = cfg.MATHML_TEXT_INTEGRATION_POINTS || MATHML_TEXT_INTEGRATION_POINTS; + HTML_INTEGRATION_POINTS = cfg.HTML_INTEGRATION_POINTS || HTML_INTEGRATION_POINTS; CUSTOM_ELEMENT_HANDLING = cfg.CUSTOM_ELEMENT_HANDLING || {}; if (cfg.CUSTOM_ELEMENT_HANDLING && isRegexOrFunction(cfg.CUSTOM_ELEMENT_HANDLING.tagNameCheck)) { CUSTOM_ELEMENT_HANDLING.tagNameCheck = cfg.CUSTOM_ELEMENT_HANDLING.tagNameCheck; @@ -626,7 +565,6 @@ if (RETURN_DOM_FRAGMENT) { RETURN_DOM = true; } - /* Parse profile info */ if (USE_PROFILES) { ALLOWED_TAGS = addToSet({}, text); @@ -651,7 +589,6 @@ addToSet(ALLOWED_ATTR, xml); } } - /* Merge configuration parameters */ if (cfg.ADD_TAGS) { if (ALLOWED_TAGS === DEFAULT_ALLOWED_TAGS) { @@ -674,17 +611,14 @@ } addToSet(FORBID_CONTENTS, cfg.FORBID_CONTENTS, transformCaseFunc); } - /* Add #text in case KEEP_CONTENT is set to true */ if (KEEP_CONTENT) { ALLOWED_TAGS['#text'] = true; } - /* Add html, head and body to ALLOWED_TAGS in case WHOLE_DOCUMENT is true */ if (WHOLE_DOCUMENT) { addToSet(ALLOWED_TAGS, ['html', 'head', 'body']); } - /* Add tbody to ALLOWED_TAGS in case tables are permitted, see #286, #365 */ if (ALLOWED_TAGS.table) { addToSet(ALLOWED_TAGS, ['tbody']); @@ -697,10 +631,8 @@ if (typeof cfg.TRUSTED_TYPES_POLICY.createScriptURL !== 'function') { throw typeErrorCreate('TRUSTED_TYPES_POLICY configuration option must provide a "createScriptURL" hook.'); } - // Overwrite existing TrustedTypes policy. trustedTypesPolicy = cfg.TRUSTED_TYPES_POLICY; - // Sign local variables required by `sanitize`. emptyHTML = trustedTypesPolicy.createHTML(''); } else { @@ -708,13 +640,11 @@ if (trustedTypesPolicy === undefined) { trustedTypesPolicy = _createTrustedTypesPolicy(trustedTypes, currentScript); } - // If creating the internal policy succeeded sign internal variables. if (trustedTypesPolicy !== null && typeof emptyHTML === 'string') { emptyHTML = trustedTypesPolicy.createHTML(''); } } - // Prevent further manipulation of configuration. // Not available in IE8, Safari 5, etc. if (freeze) { @@ -722,30 +652,19 @@ } CONFIG = cfg; }; - const MATHML_TEXT_INTEGRATION_POINTS = addToSet({}, ['mi', 'mo', 'mn', 'ms', 'mtext']); - const HTML_INTEGRATION_POINTS = addToSet({}, ['annotation-xml']); - - // Certain elements are allowed in both SVG and HTML - // namespace. We need to specify them explicitly - // so that they don't get erroneously deleted from - // HTML namespace. - const COMMON_SVG_AND_HTML_ELEMENTS = addToSet({}, ['title', 'style', 'font', 'a', 'script']); - /* Keep track of all possible SVG and MathML tags * so that we can perform the namespace checks * correctly. */ const ALL_SVG_TAGS = addToSet({}, [...svg$1, ...svgFilters, ...svgDisallowed]); const ALL_MATHML_TAGS = addToSet({}, [...mathMl$1, ...mathMlDisallowed]); - /** - * @param {Element} element a DOM element whose namespace is being checked - * @returns {boolean} Return false if the element has a + * @param element a DOM element whose namespace is being checked + * @returns Return false if the element has a * namespace that a spec-compliant parser would never * return. Return true otherwise. */ const _checkValidNamespace = function _checkValidNamespace(element) { let parent = getParentNode(element); - // In JSDOM, if we're inside shadow DOM, then parentNode // can be null. We just simulate parent in this case. if (!parent || !parent.tagName) { @@ -766,14 +685,12 @@ if (parent.namespaceURI === HTML_NAMESPACE) { return tagName === 'svg'; } - // The only way to switch from MathML to SVG is via` // svg if parent is either or MathML // text integration points. if (parent.namespaceURI === MATHML_NAMESPACE) { return tagName === 'svg' && (parentTagName === 'annotation-xml' || MATHML_TEXT_INTEGRATION_POINTS[parentTagName]); } - // We only allow elements that are defined in SVG // spec. All others are disallowed in SVG namespace. return Boolean(ALL_SVG_TAGS[tagName]); @@ -785,13 +702,11 @@ if (parent.namespaceURI === HTML_NAMESPACE) { return tagName === 'math'; } - // The only way to switch from SVG to MathML is via // and HTML integration points if (parent.namespaceURI === SVG_NAMESPACE) { return tagName === 'math' && HTML_INTEGRATION_POINTS[parentTagName]; } - // We only allow elements that are defined in MathML // spec. All others are disallowed in MathML namespace. return Boolean(ALL_MATHML_TAGS[tagName]); @@ -806,28 +721,24 @@ if (parent.namespaceURI === MATHML_NAMESPACE && !MATHML_TEXT_INTEGRATION_POINTS[parentTagName]) { return false; } - // We disallow tags that are specific for MathML // or SVG and should never appear in HTML namespace return !ALL_MATHML_TAGS[tagName] && (COMMON_SVG_AND_HTML_ELEMENTS[tagName] || !ALL_SVG_TAGS[tagName]); } - // For XHTML and XML documents that support custom namespaces if (PARSER_MEDIA_TYPE === 'application/xhtml+xml' && ALLOWED_NAMESPACES[element.namespaceURI]) { return true; } - // The code should never reach this place (this means // that the element somehow got namespace that is not // HTML, SVG, MathML or allowed via ALLOWED_NAMESPACES). // Return false just in case. return false; }; - /** * _forceRemove * - * @param {Node} node a DOM node + * @param node a DOM node */ const _forceRemove = function _forceRemove(node) { arrayPush(DOMPurify.removed, { @@ -840,46 +751,43 @@ remove(node); } }; - /** * _removeAttribute * - * @param {String} name an Attribute name - * @param {Node} node a DOM node + * @param name an Attribute name + * @param element a DOM node */ - const _removeAttribute = function _removeAttribute(name, node) { + const _removeAttribute = function _removeAttribute(name, element) { try { arrayPush(DOMPurify.removed, { - attribute: node.getAttributeNode(name), - from: node + attribute: element.getAttributeNode(name), + from: element }); } catch (_) { arrayPush(DOMPurify.removed, { attribute: null, - from: node + from: element }); } - node.removeAttribute(name); - + element.removeAttribute(name); // We void attribute values for unremovable "is"" attributes if (name === 'is' && !ALLOWED_ATTR[name]) { if (RETURN_DOM || RETURN_DOM_FRAGMENT) { try { - _forceRemove(node); + _forceRemove(element); } catch (_) {} } else { try { - node.setAttribute(name, ''); + element.setAttribute(name, ''); } catch (_) {} } } }; - /** * _initDocument * - * @param {String} dirty a string of dirty markup - * @return {Document} a DOM, filled with the dirty markup + * @param dirty - a string of dirty markup + * @return a DOM, filled with the dirty markup */ const _initDocument = function _initDocument(dirty) { /* Create a HTML document */ @@ -906,7 +814,6 @@ doc = new DOMParser().parseFromString(dirtyPayload, PARSER_MEDIA_TYPE); } catch (_) {} } - /* Use createHTMLDocument in case DOMParser is not available */ if (!doc || !doc.documentElement) { doc = implementation.createDocument(NAMESPACE, 'template', null); @@ -920,112 +827,89 @@ if (dirty && leadingWhitespace) { body.insertBefore(document.createTextNode(leadingWhitespace), body.childNodes[0] || null); } - /* Work on whole document or just its body */ if (NAMESPACE === HTML_NAMESPACE) { return getElementsByTagName.call(doc, WHOLE_DOCUMENT ? 'html' : 'body')[0]; } return WHOLE_DOCUMENT ? doc.documentElement : body; }; - /** * Creates a NodeIterator object that you can use to traverse filtered lists of nodes or elements in a document. * - * @param {Node} root The root element or node to start traversing on. - * @return {NodeIterator} The created NodeIterator + * @param root The root element or node to start traversing on. + * @return The created NodeIterator */ const _createNodeIterator = function _createNodeIterator(root) { return createNodeIterator.call(root.ownerDocument || root, root, // eslint-disable-next-line no-bitwise NodeFilter.SHOW_ELEMENT | NodeFilter.SHOW_COMMENT | NodeFilter.SHOW_TEXT | NodeFilter.SHOW_PROCESSING_INSTRUCTION | NodeFilter.SHOW_CDATA_SECTION, null); }; - /** * _isClobbered * - * @param {Node} elm element to check for clobbering attacks - * @return {Boolean} true if clobbered, false if safe + * @param element element to check for clobbering attacks + * @return true if clobbered, false if safe */ - const _isClobbered = function _isClobbered(elm) { - return elm instanceof HTMLFormElement && (typeof elm.nodeName !== 'string' || typeof elm.textContent !== 'string' || typeof elm.removeChild !== 'function' || !(elm.attributes instanceof NamedNodeMap) || typeof elm.removeAttribute !== 'function' || typeof elm.setAttribute !== 'function' || typeof elm.namespaceURI !== 'string' || typeof elm.insertBefore !== 'function' || typeof elm.hasChildNodes !== 'function'); + const _isClobbered = function _isClobbered(element) { + return element instanceof HTMLFormElement && (typeof element.nodeName !== 'string' || typeof element.textContent !== 'string' || typeof element.removeChild !== 'function' || !(element.attributes instanceof NamedNodeMap) || typeof element.removeAttribute !== 'function' || typeof element.setAttribute !== 'function' || typeof element.namespaceURI !== 'string' || typeof element.insertBefore !== 'function' || typeof element.hasChildNodes !== 'function'); }; - /** * Checks whether the given object is a DOM node. * - * @param {Node} object object to check whether it's a DOM node - * @return {Boolean} true is object is a DOM node + * @param value object to check whether it's a DOM node + * @return true is object is a DOM node */ - const _isNode = function _isNode(object) { - return typeof Node === 'function' && object instanceof Node; + const _isNode = function _isNode(value) { + return typeof Node === 'function' && value instanceof Node; }; - - /** - * _executeHook - * Execute user configurable hooks - * - * @param {String} entryPoint Name of the hook's entry point - * @param {Node} currentNode node to work on with the hook - * @param {Object} data additional hook parameters - */ - const _executeHook = function _executeHook(entryPoint, currentNode, data) { + function _executeHook(entryPoint, currentNode, data) { if (!hooks[entryPoint]) { return; } arrayForEach(hooks[entryPoint], hook => { hook.call(DOMPurify, currentNode, data, CONFIG); }); - }; - + } /** * _sanitizeElements * * @protect nodeName * @protect textContent * @protect removeChild - * - * @param {Node} currentNode to check for permission to exist - * @return {Boolean} true if node was killed, false if left alive + * @param currentNode to check for permission to exist + * @return true if node was killed, false if left alive */ const _sanitizeElements = function _sanitizeElements(currentNode) { let content = null; - /* Execute a hook if present */ _executeHook('beforeSanitizeElements', currentNode, null); - /* Check if element is clobbered or can clobber */ if (_isClobbered(currentNode)) { _forceRemove(currentNode); return true; } - /* Now let's check the element's type and name */ const tagName = transformCaseFunc(currentNode.nodeName); - /* Execute a hook if present */ _executeHook('uponSanitizeElement', currentNode, { tagName, allowedTags: ALLOWED_TAGS }); - /* Detect mXSS attempts abusing namespace confusion */ if (currentNode.hasChildNodes() && !_isNode(currentNode.firstElementChild) && regExpTest(/<[/\w]/g, currentNode.innerHTML) && regExpTest(/<[/\w]/g, currentNode.textContent)) { _forceRemove(currentNode); return true; } - /* Remove any occurrence of processing instructions */ if (currentNode.nodeType === NODE_TYPE.progressingInstruction) { _forceRemove(currentNode); return true; } - /* Remove any kind of possibly harmful comments */ if (SAFE_FOR_XML && currentNode.nodeType === NODE_TYPE.comment && regExpTest(/<[/\w]/g, currentNode.data)) { _forceRemove(currentNode); return true; } - /* Remove element if anything forbids its presence */ if (!ALLOWED_TAGS[tagName] || FORBID_TAGS[tagName]) { /* Check if we have a custom element to handle */ @@ -1037,7 +921,6 @@ return false; } } - /* Keep content except for bad-listed elements */ if (KEEP_CONTENT && !FORBID_CONTENTS[tagName]) { const parentNode = getParentNode(currentNode) || currentNode.parentNode; @@ -1054,19 +937,16 @@ _forceRemove(currentNode); return true; } - /* Check whether element has a valid namespace */ if (currentNode instanceof Element && !_checkValidNamespace(currentNode)) { _forceRemove(currentNode); return true; } - /* Make sure that older browsers don't get fallback-tag mXSS */ if ((tagName === 'noscript' || tagName === 'noembed' || tagName === 'noframes') && regExpTest(/<\/no(script|embed|frames)/i, currentNode.innerHTML)) { _forceRemove(currentNode); return true; } - /* Sanitize element content to be template-safe */ if (SAFE_FOR_TEMPLATES && currentNode.nodeType === NODE_TYPE.text) { /* Get the element's text content */ @@ -1081,19 +961,17 @@ currentNode.textContent = content; } } - /* Execute a hook if present */ _executeHook('afterSanitizeElements', currentNode, null); return false; }; - /** * _isValidAttribute * - * @param {string} lcTag Lowercase tag name of containing element. - * @param {string} lcName Lowercase attribute name. - * @param {string} value Attribute value. - * @return {Boolean} Returns true if `value` is valid, otherwise false. + * @param lcTag Lowercase tag name of containing element. + * @param lcName Lowercase attribute name. + * @param value Attribute value. + * @return Returns true if `value` is valid, otherwise false. */ // eslint-disable-next-line complexity const _isValidAttribute = function _isValidAttribute(lcTag, lcName, value) { @@ -1101,7 +979,6 @@ if (SANITIZE_DOM && (lcName === 'id' || lcName === 'name') && (value in document || value in formElement)) { return false; } - /* Allow valid data-* attributes: At least one character after "-" (https://html.spec.whatwg.org/multipage/dom.html#embedding-custom-non-visible-data-with-the-data-*-attributes) XML-compatible (https://html.spec.whatwg.org/multipage/infrastructure.html#xml-compatible and http://www.w3.org/TR/xml/#d0e804) @@ -1123,19 +1000,17 @@ } else ; return true; }; - /** * _isBasicCustomElement * checks if at least one dash is included in tagName, and it's not the first char * for more sophisticated checking see https://github.com/sindresorhus/validate-element-name * - * @param {string} tagName name of the tag of the node to sanitize - * @returns {boolean} Returns true if the tag name meets the basic criteria for a custom element, otherwise false. + * @param tagName name of the tag of the node to sanitize + * @returns Returns true if the tag name meets the basic criteria for a custom element, otherwise false. */ const _isBasicCustomElement = function _isBasicCustomElement(tagName) { return tagName !== 'annotation-xml' && stringMatch(tagName, CUSTOM_ELEMENT); }; - /** * _sanitizeAttributes * @@ -1144,7 +1019,7 @@ * @protect removeAttribute * @protect setAttribute * - * @param {Node} currentNode to sanitize + * @param currentNode to sanitize */ const _sanitizeAttributes = function _sanitizeAttributes(currentNode) { /* Execute a hook if present */ @@ -1152,7 +1027,6 @@ const { attributes } = currentNode; - /* Check if we have attributes; if not we might have a text node */ if (!attributes) { return; @@ -1161,10 +1035,10 @@ attrName: '', attrValue: '', keepAttr: true, - allowedAttributes: ALLOWED_ATTR + allowedAttributes: ALLOWED_ATTR, + forceKeepAttr: undefined }; let l = attributes.length; - /* Go backwards over all attributes; safely remove bad ones */ while (l--) { const attr = attributes[l]; @@ -1175,7 +1049,6 @@ } = attr; const lcName = transformCaseFunc(name); let value = name === 'value' ? attrValue : stringTrim(attrValue); - /* Execute a hook if present */ hookEvent.attrName = lcName; hookEvent.attrValue = value; @@ -1183,56 +1056,46 @@ hookEvent.forceKeepAttr = undefined; // Allows developers to see this is a property they can set _executeHook('uponSanitizeAttribute', currentNode, hookEvent); value = hookEvent.attrValue; - + /* Full DOM Clobbering protection via namespace isolation, + * Prefix id and name attributes with `user-content-` + */ + if (SANITIZE_NAMED_PROPS && (lcName === 'id' || lcName === 'name')) { + // Remove the attribute with this value + _removeAttribute(name, currentNode); + // Prefix the value and later re-create the attribute with the sanitized value + value = SANITIZE_NAMED_PROPS_PREFIX + value; + } + /* Work around a security issue with comments inside attributes */ + if (SAFE_FOR_XML && regExpTest(/((--!?|])>)|<\/(style|title)/i, value)) { + _removeAttribute(name, currentNode); + continue; + } /* Did the hooks approve of the attribute? */ if (hookEvent.forceKeepAttr) { continue; } - /* Remove attribute */ _removeAttribute(name, currentNode); - /* Did the hooks approve of the attribute? */ if (!hookEvent.keepAttr) { continue; } - /* Work around a security issue in jQuery 3.0 */ if (!ALLOW_SELF_CLOSE_IN_ATTR && regExpTest(/\/>/i, value)) { _removeAttribute(name, currentNode); continue; } - /* Sanitize attribute content to be template-safe */ if (SAFE_FOR_TEMPLATES) { arrayForEach([MUSTACHE_EXPR, ERB_EXPR, TMPLIT_EXPR], expr => { value = stringReplace(value, expr, ' '); }); } - /* Is `value` valid for this attribute? */ const lcTag = transformCaseFunc(currentNode.nodeName); if (!_isValidAttribute(lcTag, lcName, value)) { continue; } - - /* Full DOM Clobbering protection via namespace isolation, - * Prefix id and name attributes with `user-content-` - */ - if (SANITIZE_NAMED_PROPS && (lcName === 'id' || lcName === 'name')) { - // Remove the attribute with this value - _removeAttribute(name, currentNode); - - // Prefix the value and later re-create the attribute with the sanitized value - value = SANITIZE_NAMED_PROPS_PREFIX + value; - } - - /* Work around a security issue with comments inside attributes */ - if (SAFE_FOR_XML && regExpTest(/((--!?|])>)|<\/(style|title)/i, value)) { - _removeAttribute(name, currentNode); - continue; - } - /* Handle attributes that require Trusted Types */ if (trustedTypesPolicy && typeof trustedTypes === 'object' && typeof trustedTypes.getAttributeType === 'function') { if (namespaceURI) ; else { @@ -1250,7 +1113,6 @@ } } } - /* Handle invalid data-* attribute set by try-catching it */ try { if (namespaceURI) { @@ -1266,51 +1128,36 @@ } } catch (_) {} } - /* Execute a hook if present */ _executeHook('afterSanitizeAttributes', currentNode, null); }; - /** * _sanitizeShadowDOM * - * @param {DocumentFragment} fragment to iterate over recursively + * @param fragment to iterate over recursively */ const _sanitizeShadowDOM = function _sanitizeShadowDOM(fragment) { let shadowNode = null; const shadowIterator = _createNodeIterator(fragment); - /* Execute a hook if present */ _executeHook('beforeSanitizeShadowDOM', fragment, null); while (shadowNode = shadowIterator.nextNode()) { /* Execute a hook if present */ _executeHook('uponSanitizeShadowNode', shadowNode, null); - /* Sanitize tags and elements */ if (_sanitizeElements(shadowNode)) { continue; } - /* Deep shadow DOM detected */ if (shadowNode.content instanceof DocumentFragment) { _sanitizeShadowDOM(shadowNode.content); } - /* Check attributes, sanitize if necessary */ _sanitizeAttributes(shadowNode); } - /* Execute a hook if present */ _executeHook('afterSanitizeShadowDOM', fragment, null); }; - - /** - * Sanitize - * Public method providing core sanitation functionality - * - * @param {String|Node} dirty string or DOM node - * @param {Object} cfg object - */ // eslint-disable-next-line complexity DOMPurify.sanitize = function (dirty) { let cfg = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {}; @@ -1325,7 +1172,6 @@ if (IS_EMPTY_INPUT) { dirty = ''; } - /* Stringify, in case dirty is an object */ if (typeof dirty !== 'string' && !_isNode(dirty)) { if (typeof dirty.toString === 'function') { @@ -1337,20 +1183,16 @@ throw typeErrorCreate('toString is not a function'); } } - /* Return dirty HTML if DOMPurify cannot run */ if (!DOMPurify.isSupported) { return dirty; } - /* Assign config vars */ if (!SET_CONFIG) { _parseConfig(cfg); } - /* Clean up removed elements */ DOMPurify.removed = []; - /* Check if dirty is correctly typed for IN_PLACE */ if (typeof dirty === 'string') { IN_PLACE = false; @@ -1384,45 +1226,36 @@ dirty.indexOf('<') === -1) { return trustedTypesPolicy && RETURN_TRUSTED_TYPE ? trustedTypesPolicy.createHTML(dirty) : dirty; } - /* Initialize the document to work on */ body = _initDocument(dirty); - /* Check we have a DOM node from the data */ if (!body) { return RETURN_DOM ? null : RETURN_TRUSTED_TYPE ? emptyHTML : ''; } } - /* Remove first element node (ours) if FORCE_BODY is set */ if (body && FORCE_BODY) { _forceRemove(body.firstChild); } - /* Get node iterator */ const nodeIterator = _createNodeIterator(IN_PLACE ? dirty : body); - /* Now start iterating over the created document */ while (currentNode = nodeIterator.nextNode()) { /* Sanitize tags and elements */ if (_sanitizeElements(currentNode)) { continue; } - /* Shadow DOM detected, sanitize it */ if (currentNode.content instanceof DocumentFragment) { _sanitizeShadowDOM(currentNode.content); } - /* Check attributes, sanitize if necessary */ _sanitizeAttributes(currentNode); } - /* If we sanitized `dirty` in-place, return it. */ if (IN_PLACE) { return dirty; } - /* Return sanitized string or DOM */ if (RETURN_DOM) { if (RETURN_DOM_FRAGMENT) { @@ -1447,12 +1280,10 @@ return returnNode; } let serializedHTML = WHOLE_DOCUMENT ? body.outerHTML : body.innerHTML; - /* Serialize doctype if allowed */ if (WHOLE_DOCUMENT && ALLOWED_TAGS['!doctype'] && body.ownerDocument && body.ownerDocument.doctype && body.ownerDocument.doctype.name && regExpTest(DOCTYPE_NAME, body.ownerDocument.doctype.name)) { serializedHTML = '\n' + serializedHTML; } - /* Sanitize final string template-safe */ if (SAFE_FOR_TEMPLATES) { arrayForEach([MUSTACHE_EXPR, ERB_EXPR, TMPLIT_EXPR], expr => { @@ -1461,39 +1292,15 @@ } return trustedTypesPolicy && RETURN_TRUSTED_TYPE ? trustedTypesPolicy.createHTML(serializedHTML) : serializedHTML; }; - - /** - * Public method to set the configuration once - * setConfig - * - * @param {Object} cfg configuration object - */ DOMPurify.setConfig = function () { let cfg = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {}; _parseConfig(cfg); SET_CONFIG = true; }; - - /** - * Public method to remove the configuration - * clearConfig - * - */ DOMPurify.clearConfig = function () { CONFIG = null; SET_CONFIG = false; }; - - /** - * Public method to check if an attribute value is valid. - * Uses last set config, if any. Otherwise, uses config defaults. - * isValidAttribute - * - * @param {String} tag Tag name of containing element. - * @param {String} attr Attribute name. - * @param {String} value Attribute value. - * @return {Boolean} Returns true if `value` is valid. Otherwise, returns false. - */ DOMPurify.isValidAttribute = function (tag, attr, value) { /* Initialize shared config vars if necessary. */ if (!CONFIG) { @@ -1503,14 +1310,6 @@ const lcName = transformCaseFunc(attr); return _isValidAttribute(lcTag, lcName, value); }; - - /** - * AddHook - * Public method to add DOMPurify hooks - * - * @param {String} entryPoint entry point for the hook to add - * @param {Function} hookFunction function to execute - */ DOMPurify.addHook = function (entryPoint, hookFunction) { if (typeof hookFunction !== 'function') { return; @@ -1518,37 +1317,16 @@ hooks[entryPoint] = hooks[entryPoint] || []; arrayPush(hooks[entryPoint], hookFunction); }; - - /** - * RemoveHook - * Public method to remove a DOMPurify hook at a given entryPoint - * (pops it from the stack of hooks if more are present) - * - * @param {String} entryPoint entry point for the hook to remove - * @return {Function} removed(popped) hook - */ DOMPurify.removeHook = function (entryPoint) { if (hooks[entryPoint]) { return arrayPop(hooks[entryPoint]); } }; - - /** - * RemoveHooks - * Public method to remove all DOMPurify hooks at a given entryPoint - * - * @param {String} entryPoint entry point for the hooks to remove - */ DOMPurify.removeHooks = function (entryPoint) { if (hooks[entryPoint]) { hooks[entryPoint] = []; } }; - - /** - * RemoveAllHooks - * Public method to remove all DOMPurify hooks - */ DOMPurify.removeAllHooks = function () { hooks = {}; }; diff --git a/dist/purify.js.map b/dist/purify.js.map index cbed9a7ee..e719347d7 100644 --- a/dist/purify.js.map +++ b/dist/purify.js.map @@ -1 +1 @@ -{"version":3,"file":"purify.js","sources":["../src/utils.js","../src/tags.js","../src/attrs.js","../src/regexp.js","../src/purify.js"],"sourcesContent":["const {\n entries,\n setPrototypeOf,\n isFrozen,\n getPrototypeOf,\n getOwnPropertyDescriptor,\n} = Object;\n\nlet { freeze, seal, create } = Object; // eslint-disable-line import/no-mutable-exports\nlet { apply, construct } = typeof Reflect !== 'undefined' && Reflect;\n\nif (!freeze) {\n freeze = function (x) {\n return x;\n };\n}\n\nif (!seal) {\n seal = function (x) {\n return x;\n };\n}\n\nif (!apply) {\n apply = function (fun, thisValue, args) {\n return fun.apply(thisValue, args);\n };\n}\n\nif (!construct) {\n construct = function (Func, args) {\n return new Func(...args);\n };\n}\n\nconst arrayForEach = unapply(Array.prototype.forEach);\nconst arrayIndexOf = unapply(Array.prototype.indexOf);\nconst arrayPop = unapply(Array.prototype.pop);\nconst arrayPush = unapply(Array.prototype.push);\nconst arraySlice = unapply(Array.prototype.slice);\n\nconst stringToLowerCase = unapply(String.prototype.toLowerCase);\nconst stringToString = unapply(String.prototype.toString);\nconst stringMatch = unapply(String.prototype.match);\nconst stringReplace = unapply(String.prototype.replace);\nconst stringIndexOf = unapply(String.prototype.indexOf);\nconst stringTrim = unapply(String.prototype.trim);\n\nconst objectHasOwnProperty = unapply(Object.prototype.hasOwnProperty);\n\nconst regExpTest = unapply(RegExp.prototype.test);\n\nconst typeErrorCreate = unconstruct(TypeError);\n\n/**\n * Creates a new function that calls the given function with a specified thisArg and arguments.\n *\n * @param {Function} func - The function to be wrapped and called.\n * @returns {Function} A new function that calls the given function with a specified thisArg and arguments.\n */\nfunction unapply(func) {\n return (thisArg, ...args) => apply(func, thisArg, args);\n}\n\n/**\n * Creates a new function that constructs an instance of the given constructor function with the provided arguments.\n *\n * @param {Function} func - The constructor function to be wrapped and called.\n * @returns {Function} A new function that constructs an instance of the given constructor function with the provided arguments.\n */\nfunction unconstruct(func) {\n return (...args) => construct(func, args);\n}\n\n/**\n * Add properties to a lookup table\n *\n * @param {Object} set - The set to which elements will be added.\n * @param {Array} array - The array containing elements to be added to the set.\n * @param {Function} transformCaseFunc - An optional function to transform the case of each element before adding to the set.\n * @returns {Object} The modified set with added elements.\n */\nfunction addToSet(set, array, transformCaseFunc = stringToLowerCase) {\n if (setPrototypeOf) {\n // Make 'in' and truthy checks like Boolean(set.constructor)\n // independent of any properties defined on Object.prototype.\n // Prevent prototype setters from intercepting set as a this value.\n setPrototypeOf(set, null);\n }\n\n let l = array.length;\n while (l--) {\n let element = array[l];\n if (typeof element === 'string') {\n const lcElement = transformCaseFunc(element);\n if (lcElement !== element) {\n // Config presets (e.g. tags.js, attrs.js) are immutable.\n if (!isFrozen(array)) {\n array[l] = lcElement;\n }\n\n element = lcElement;\n }\n }\n\n set[element] = true;\n }\n\n return set;\n}\n\n/**\n * Clean up an array to harden against CSPP\n *\n * @param {Array} array - The array to be cleaned.\n * @returns {Array} The cleaned version of the array\n */\nfunction cleanArray(array) {\n for (let index = 0; index < array.length; index++) {\n const isPropertyExist = objectHasOwnProperty(array, index);\n\n if (!isPropertyExist) {\n array[index] = null;\n }\n }\n\n return array;\n}\n\n/**\n * Shallow clone an object\n *\n * @param {Object} object - The object to be cloned.\n * @returns {Object} A new object that copies the original.\n */\nfunction clone(object) {\n const newObject = create(null);\n\n for (const [property, value] of entries(object)) {\n const isPropertyExist = objectHasOwnProperty(object, property);\n\n if (isPropertyExist) {\n if (Array.isArray(value)) {\n newObject[property] = cleanArray(value);\n } else if (\n value &&\n typeof value === 'object' &&\n value.constructor === Object\n ) {\n newObject[property] = clone(value);\n } else {\n newObject[property] = value;\n }\n }\n }\n\n return newObject;\n}\n\n/**\n * This method automatically checks if the prop is function or getter and behaves accordingly.\n *\n * @param {Object} object - The object to look up the getter function in its prototype chain.\n * @param {String} prop - The property name for which to find the getter function.\n * @returns {Function} The getter function found in the prototype chain or a fallback function.\n */\nfunction lookupGetter(object, prop) {\n while (object !== null) {\n const desc = getOwnPropertyDescriptor(object, prop);\n\n if (desc) {\n if (desc.get) {\n return unapply(desc.get);\n }\n\n if (typeof desc.value === 'function') {\n return unapply(desc.value);\n }\n }\n\n object = getPrototypeOf(object);\n }\n\n function fallbackValue() {\n return null;\n }\n\n return fallbackValue;\n}\n\nexport {\n // Array\n arrayForEach,\n arrayIndexOf,\n arrayPop,\n arrayPush,\n arraySlice,\n // Object\n entries,\n freeze,\n getPrototypeOf,\n getOwnPropertyDescriptor,\n isFrozen,\n setPrototypeOf,\n seal,\n clone,\n create,\n objectHasOwnProperty,\n // RegExp\n regExpTest,\n // String\n stringIndexOf,\n stringMatch,\n stringReplace,\n stringToLowerCase,\n stringToString,\n stringTrim,\n // Errors\n typeErrorCreate,\n // Other\n lookupGetter,\n addToSet,\n // Reflect\n unapply,\n unconstruct,\n};\n","import { freeze } from './utils.js';\n\nexport const html = freeze([\n 'a',\n 'abbr',\n 'acronym',\n 'address',\n 'area',\n 'article',\n 'aside',\n 'audio',\n 'b',\n 'bdi',\n 'bdo',\n 'big',\n 'blink',\n 'blockquote',\n 'body',\n 'br',\n 'button',\n 'canvas',\n 'caption',\n 'center',\n 'cite',\n 'code',\n 'col',\n 'colgroup',\n 'content',\n 'data',\n 'datalist',\n 'dd',\n 'decorator',\n 'del',\n 'details',\n 'dfn',\n 'dialog',\n 'dir',\n 'div',\n 'dl',\n 'dt',\n 'element',\n 'em',\n 'fieldset',\n 'figcaption',\n 'figure',\n 'font',\n 'footer',\n 'form',\n 'h1',\n 'h2',\n 'h3',\n 'h4',\n 'h5',\n 'h6',\n 'head',\n 'header',\n 'hgroup',\n 'hr',\n 'html',\n 'i',\n 'img',\n 'input',\n 'ins',\n 'kbd',\n 'label',\n 'legend',\n 'li',\n 'main',\n 'map',\n 'mark',\n 'marquee',\n 'menu',\n 'menuitem',\n 'meter',\n 'nav',\n 'nobr',\n 'ol',\n 'optgroup',\n 'option',\n 'output',\n 'p',\n 'picture',\n 'pre',\n 'progress',\n 'q',\n 'rp',\n 'rt',\n 'ruby',\n 's',\n 'samp',\n 'section',\n 'select',\n 'shadow',\n 'small',\n 'source',\n 'spacer',\n 'span',\n 'strike',\n 'strong',\n 'style',\n 'sub',\n 'summary',\n 'sup',\n 'table',\n 'tbody',\n 'td',\n 'template',\n 'textarea',\n 'tfoot',\n 'th',\n 'thead',\n 'time',\n 'tr',\n 'track',\n 'tt',\n 'u',\n 'ul',\n 'var',\n 'video',\n 'wbr',\n]);\n\n// SVG\nexport const svg = freeze([\n 'svg',\n 'a',\n 'altglyph',\n 'altglyphdef',\n 'altglyphitem',\n 'animatecolor',\n 'animatemotion',\n 'animatetransform',\n 'circle',\n 'clippath',\n 'defs',\n 'desc',\n 'ellipse',\n 'filter',\n 'font',\n 'g',\n 'glyph',\n 'glyphref',\n 'hkern',\n 'image',\n 'line',\n 'lineargradient',\n 'marker',\n 'mask',\n 'metadata',\n 'mpath',\n 'path',\n 'pattern',\n 'polygon',\n 'polyline',\n 'radialgradient',\n 'rect',\n 'stop',\n 'style',\n 'switch',\n 'symbol',\n 'text',\n 'textpath',\n 'title',\n 'tref',\n 'tspan',\n 'view',\n 'vkern',\n]);\n\nexport const svgFilters = freeze([\n 'feBlend',\n 'feColorMatrix',\n 'feComponentTransfer',\n 'feComposite',\n 'feConvolveMatrix',\n 'feDiffuseLighting',\n 'feDisplacementMap',\n 'feDistantLight',\n 'feDropShadow',\n 'feFlood',\n 'feFuncA',\n 'feFuncB',\n 'feFuncG',\n 'feFuncR',\n 'feGaussianBlur',\n 'feImage',\n 'feMerge',\n 'feMergeNode',\n 'feMorphology',\n 'feOffset',\n 'fePointLight',\n 'feSpecularLighting',\n 'feSpotLight',\n 'feTile',\n 'feTurbulence',\n]);\n\n// List of SVG elements that are disallowed by default.\n// We still need to know them so that we can do namespace\n// checks properly in case one wants to add them to\n// allow-list.\nexport const svgDisallowed = freeze([\n 'animate',\n 'color-profile',\n 'cursor',\n 'discard',\n 'font-face',\n 'font-face-format',\n 'font-face-name',\n 'font-face-src',\n 'font-face-uri',\n 'foreignobject',\n 'hatch',\n 'hatchpath',\n 'mesh',\n 'meshgradient',\n 'meshpatch',\n 'meshrow',\n 'missing-glyph',\n 'script',\n 'set',\n 'solidcolor',\n 'unknown',\n 'use',\n]);\n\nexport const mathMl = freeze([\n 'math',\n 'menclose',\n 'merror',\n 'mfenced',\n 'mfrac',\n 'mglyph',\n 'mi',\n 'mlabeledtr',\n 'mmultiscripts',\n 'mn',\n 'mo',\n 'mover',\n 'mpadded',\n 'mphantom',\n 'mroot',\n 'mrow',\n 'ms',\n 'mspace',\n 'msqrt',\n 'mstyle',\n 'msub',\n 'msup',\n 'msubsup',\n 'mtable',\n 'mtd',\n 'mtext',\n 'mtr',\n 'munder',\n 'munderover',\n 'mprescripts',\n]);\n\n// Similarly to SVG, we want to know all MathML elements,\n// even those that we disallow by default.\nexport const mathMlDisallowed = freeze([\n 'maction',\n 'maligngroup',\n 'malignmark',\n 'mlongdiv',\n 'mscarries',\n 'mscarry',\n 'msgroup',\n 'mstack',\n 'msline',\n 'msrow',\n 'semantics',\n 'annotation',\n 'annotation-xml',\n 'mprescripts',\n 'none',\n]);\n\nexport const text = freeze(['#text']);\n","import { freeze } from './utils.js';\n\nexport const html = freeze([\n 'accept',\n 'action',\n 'align',\n 'alt',\n 'autocapitalize',\n 'autocomplete',\n 'autopictureinpicture',\n 'autoplay',\n 'background',\n 'bgcolor',\n 'border',\n 'capture',\n 'cellpadding',\n 'cellspacing',\n 'checked',\n 'cite',\n 'class',\n 'clear',\n 'color',\n 'cols',\n 'colspan',\n 'controls',\n 'controlslist',\n 'coords',\n 'crossorigin',\n 'datetime',\n 'decoding',\n 'default',\n 'dir',\n 'disabled',\n 'disablepictureinpicture',\n 'disableremoteplayback',\n 'download',\n 'draggable',\n 'enctype',\n 'enterkeyhint',\n 'face',\n 'for',\n 'headers',\n 'height',\n 'hidden',\n 'high',\n 'href',\n 'hreflang',\n 'id',\n 'inputmode',\n 'integrity',\n 'ismap',\n 'kind',\n 'label',\n 'lang',\n 'list',\n 'loading',\n 'loop',\n 'low',\n 'max',\n 'maxlength',\n 'media',\n 'method',\n 'min',\n 'minlength',\n 'multiple',\n 'muted',\n 'name',\n 'nonce',\n 'noshade',\n 'novalidate',\n 'nowrap',\n 'open',\n 'optimum',\n 'pattern',\n 'placeholder',\n 'playsinline',\n 'popover',\n 'popovertarget',\n 'popovertargetaction',\n 'poster',\n 'preload',\n 'pubdate',\n 'radiogroup',\n 'readonly',\n 'rel',\n 'required',\n 'rev',\n 'reversed',\n 'role',\n 'rows',\n 'rowspan',\n 'spellcheck',\n 'scope',\n 'selected',\n 'shape',\n 'size',\n 'sizes',\n 'span',\n 'srclang',\n 'start',\n 'src',\n 'srcset',\n 'step',\n 'style',\n 'summary',\n 'tabindex',\n 'title',\n 'translate',\n 'type',\n 'usemap',\n 'valign',\n 'value',\n 'width',\n 'wrap',\n 'xmlns',\n 'slot',\n]);\n\nexport const svg = freeze([\n 'accent-height',\n 'accumulate',\n 'additive',\n 'alignment-baseline',\n 'amplitude',\n 'ascent',\n 'attributename',\n 'attributetype',\n 'azimuth',\n 'basefrequency',\n 'baseline-shift',\n 'begin',\n 'bias',\n 'by',\n 'class',\n 'clip',\n 'clippathunits',\n 'clip-path',\n 'clip-rule',\n 'color',\n 'color-interpolation',\n 'color-interpolation-filters',\n 'color-profile',\n 'color-rendering',\n 'cx',\n 'cy',\n 'd',\n 'dx',\n 'dy',\n 'diffuseconstant',\n 'direction',\n 'display',\n 'divisor',\n 'dur',\n 'edgemode',\n 'elevation',\n 'end',\n 'exponent',\n 'fill',\n 'fill-opacity',\n 'fill-rule',\n 'filter',\n 'filterunits',\n 'flood-color',\n 'flood-opacity',\n 'font-family',\n 'font-size',\n 'font-size-adjust',\n 'font-stretch',\n 'font-style',\n 'font-variant',\n 'font-weight',\n 'fx',\n 'fy',\n 'g1',\n 'g2',\n 'glyph-name',\n 'glyphref',\n 'gradientunits',\n 'gradienttransform',\n 'height',\n 'href',\n 'id',\n 'image-rendering',\n 'in',\n 'in2',\n 'intercept',\n 'k',\n 'k1',\n 'k2',\n 'k3',\n 'k4',\n 'kerning',\n 'keypoints',\n 'keysplines',\n 'keytimes',\n 'lang',\n 'lengthadjust',\n 'letter-spacing',\n 'kernelmatrix',\n 'kernelunitlength',\n 'lighting-color',\n 'local',\n 'marker-end',\n 'marker-mid',\n 'marker-start',\n 'markerheight',\n 'markerunits',\n 'markerwidth',\n 'maskcontentunits',\n 'maskunits',\n 'max',\n 'mask',\n 'media',\n 'method',\n 'mode',\n 'min',\n 'name',\n 'numoctaves',\n 'offset',\n 'operator',\n 'opacity',\n 'order',\n 'orient',\n 'orientation',\n 'origin',\n 'overflow',\n 'paint-order',\n 'path',\n 'pathlength',\n 'patterncontentunits',\n 'patterntransform',\n 'patternunits',\n 'points',\n 'preservealpha',\n 'preserveaspectratio',\n 'primitiveunits',\n 'r',\n 'rx',\n 'ry',\n 'radius',\n 'refx',\n 'refy',\n 'repeatcount',\n 'repeatdur',\n 'restart',\n 'result',\n 'rotate',\n 'scale',\n 'seed',\n 'shape-rendering',\n 'slope',\n 'specularconstant',\n 'specularexponent',\n 'spreadmethod',\n 'startoffset',\n 'stddeviation',\n 'stitchtiles',\n 'stop-color',\n 'stop-opacity',\n 'stroke-dasharray',\n 'stroke-dashoffset',\n 'stroke-linecap',\n 'stroke-linejoin',\n 'stroke-miterlimit',\n 'stroke-opacity',\n 'stroke',\n 'stroke-width',\n 'style',\n 'surfacescale',\n 'systemlanguage',\n 'tabindex',\n 'tablevalues',\n 'targetx',\n 'targety',\n 'transform',\n 'transform-origin',\n 'text-anchor',\n 'text-decoration',\n 'text-rendering',\n 'textlength',\n 'type',\n 'u1',\n 'u2',\n 'unicode',\n 'values',\n 'viewbox',\n 'visibility',\n 'version',\n 'vert-adv-y',\n 'vert-origin-x',\n 'vert-origin-y',\n 'width',\n 'word-spacing',\n 'wrap',\n 'writing-mode',\n 'xchannelselector',\n 'ychannelselector',\n 'x',\n 'x1',\n 'x2',\n 'xmlns',\n 'y',\n 'y1',\n 'y2',\n 'z',\n 'zoomandpan',\n]);\n\nexport const mathMl = freeze([\n 'accent',\n 'accentunder',\n 'align',\n 'bevelled',\n 'close',\n 'columnsalign',\n 'columnlines',\n 'columnspan',\n 'denomalign',\n 'depth',\n 'dir',\n 'display',\n 'displaystyle',\n 'encoding',\n 'fence',\n 'frame',\n 'height',\n 'href',\n 'id',\n 'largeop',\n 'length',\n 'linethickness',\n 'lspace',\n 'lquote',\n 'mathbackground',\n 'mathcolor',\n 'mathsize',\n 'mathvariant',\n 'maxsize',\n 'minsize',\n 'movablelimits',\n 'notation',\n 'numalign',\n 'open',\n 'rowalign',\n 'rowlines',\n 'rowspacing',\n 'rowspan',\n 'rspace',\n 'rquote',\n 'scriptlevel',\n 'scriptminsize',\n 'scriptsizemultiplier',\n 'selection',\n 'separator',\n 'separators',\n 'stretchy',\n 'subscriptshift',\n 'supscriptshift',\n 'symmetric',\n 'voffset',\n 'width',\n 'xmlns',\n]);\n\nexport const xml = freeze([\n 'xlink:href',\n 'xml:id',\n 'xlink:title',\n 'xml:space',\n 'xmlns:xlink',\n]);\n","import { seal } from './utils.js';\n\n// eslint-disable-next-line unicorn/better-regex\nexport const MUSTACHE_EXPR = seal(/\\{\\{[\\w\\W]*|[\\w\\W]*\\}\\}/gm); // Specify template detection regex for SAFE_FOR_TEMPLATES mode\nexport const ERB_EXPR = seal(/<%[\\w\\W]*|[\\w\\W]*%>/gm);\nexport const TMPLIT_EXPR = seal(/\\${[\\w\\W]*}/gm);\nexport const DATA_ATTR = seal(/^data-[\\-\\w.\\u00B7-\\uFFFF]/); // eslint-disable-line no-useless-escape\nexport const ARIA_ATTR = seal(/^aria-[\\-\\w]+$/); // eslint-disable-line no-useless-escape\nexport const IS_ALLOWED_URI = seal(\n /^(?:(?:(?:f|ht)tps?|mailto|tel|callto|sms|cid|xmpp):|[^a-z]|[a-z+.\\-]+(?:[^a-z+.\\-:]|$))/i // eslint-disable-line no-useless-escape\n);\nexport const IS_SCRIPT_OR_DATA = seal(/^(?:\\w+script|data):/i);\nexport const ATTR_WHITESPACE = seal(\n /[\\u0000-\\u0020\\u00A0\\u1680\\u180E\\u2000-\\u2029\\u205F\\u3000]/g // eslint-disable-line no-control-regex\n);\nexport const DOCTYPE_NAME = seal(/^html$/i);\nexport const CUSTOM_ELEMENT = seal(/^[a-z][.\\w]*(-[.\\w]+)+$/i);\n","import * as TAGS from './tags.js';\nimport * as ATTRS from './attrs.js';\nimport * as EXPRESSIONS from './regexp.js';\nimport {\n addToSet,\n clone,\n entries,\n freeze,\n arrayForEach,\n arrayPop,\n arrayPush,\n stringMatch,\n stringReplace,\n stringToLowerCase,\n stringToString,\n stringIndexOf,\n stringTrim,\n regExpTest,\n typeErrorCreate,\n lookupGetter,\n create,\n objectHasOwnProperty,\n} from './utils.js';\n\n// https://developer.mozilla.org/en-US/docs/Web/API/Node/nodeType\nconst NODE_TYPE = {\n element: 1,\n attribute: 2,\n text: 3,\n cdataSection: 4,\n entityReference: 5, // Deprecated\n entityNode: 6, // Deprecated\n progressingInstruction: 7,\n comment: 8,\n document: 9,\n documentType: 10,\n documentFragment: 11,\n notation: 12, // Deprecated\n};\n\nconst getGlobal = function () {\n return typeof window === 'undefined' ? null : window;\n};\n\n/**\n * Creates a no-op policy for internal use only.\n * Don't export this function outside this module!\n * @param {TrustedTypePolicyFactory} trustedTypes The policy factory.\n * @param {HTMLScriptElement} purifyHostElement The Script element used to load DOMPurify (to determine policy name suffix).\n * @return {TrustedTypePolicy} The policy created (or null, if Trusted Types\n * are not supported or creating the policy failed).\n */\nconst _createTrustedTypesPolicy = function (trustedTypes, purifyHostElement) {\n if (\n typeof trustedTypes !== 'object' ||\n typeof trustedTypes.createPolicy !== 'function'\n ) {\n return null;\n }\n\n // Allow the callers to control the unique policy name\n // by adding a data-tt-policy-suffix to the script element with the DOMPurify.\n // Policy creation with duplicate names throws in Trusted Types.\n let suffix = null;\n const ATTR_NAME = 'data-tt-policy-suffix';\n if (purifyHostElement && purifyHostElement.hasAttribute(ATTR_NAME)) {\n suffix = purifyHostElement.getAttribute(ATTR_NAME);\n }\n\n const policyName = 'dompurify' + (suffix ? '#' + suffix : '');\n\n try {\n return trustedTypes.createPolicy(policyName, {\n createHTML(html) {\n return html;\n },\n createScriptURL(scriptUrl) {\n return scriptUrl;\n },\n });\n } catch (_) {\n // Policy creation failed (most likely another DOMPurify script has\n // already run). Skip creating the policy, as this will only cause errors\n // if TT are enforced.\n console.warn(\n 'TrustedTypes policy ' + policyName + ' could not be created.'\n );\n return null;\n }\n};\n\nfunction createDOMPurify(window = getGlobal()) {\n const DOMPurify = (root) => createDOMPurify(root);\n\n /**\n * Version label, exposed for easier checks\n * if DOMPurify is up to date or not\n */\n DOMPurify.version = VERSION;\n\n /**\n * Array of elements that DOMPurify removed during sanitation.\n * Empty if nothing was removed.\n */\n DOMPurify.removed = [];\n\n if (\n !window ||\n !window.document ||\n window.document.nodeType !== NODE_TYPE.document\n ) {\n // Not running in a browser, provide a factory function\n // so that you can pass your own Window\n DOMPurify.isSupported = false;\n\n return DOMPurify;\n }\n\n let { document } = window;\n\n const originalDocument = document;\n const currentScript = originalDocument.currentScript;\n const {\n DocumentFragment,\n HTMLTemplateElement,\n Node,\n Element,\n NodeFilter,\n NamedNodeMap = window.NamedNodeMap || window.MozNamedAttrMap,\n HTMLFormElement,\n DOMParser,\n trustedTypes,\n } = window;\n\n const ElementPrototype = Element.prototype;\n\n const cloneNode = lookupGetter(ElementPrototype, 'cloneNode');\n const remove = lookupGetter(ElementPrototype, 'remove');\n const getNextSibling = lookupGetter(ElementPrototype, 'nextSibling');\n const getChildNodes = lookupGetter(ElementPrototype, 'childNodes');\n const getParentNode = lookupGetter(ElementPrototype, 'parentNode');\n\n // As per issue #47, the web-components registry is inherited by a\n // new document created via createHTMLDocument. As per the spec\n // (http://w3c.github.io/webcomponents/spec/custom/#creating-and-passing-registries)\n // a new empty registry is used when creating a template contents owner\n // document, so we use that as our parent document to ensure nothing\n // is inherited.\n if (typeof HTMLTemplateElement === 'function') {\n const template = document.createElement('template');\n if (template.content && template.content.ownerDocument) {\n document = template.content.ownerDocument;\n }\n }\n\n let trustedTypesPolicy;\n let emptyHTML = '';\n\n const {\n implementation,\n createNodeIterator,\n createDocumentFragment,\n getElementsByTagName,\n } = document;\n const { importNode } = originalDocument;\n\n let hooks = {};\n\n /**\n * Expose whether this browser supports running the full DOMPurify.\n */\n DOMPurify.isSupported =\n typeof entries === 'function' &&\n typeof getParentNode === 'function' &&\n implementation &&\n implementation.createHTMLDocument !== undefined;\n\n const {\n MUSTACHE_EXPR,\n ERB_EXPR,\n TMPLIT_EXPR,\n DATA_ATTR,\n ARIA_ATTR,\n IS_SCRIPT_OR_DATA,\n ATTR_WHITESPACE,\n CUSTOM_ELEMENT,\n } = EXPRESSIONS;\n\n let { IS_ALLOWED_URI } = EXPRESSIONS;\n\n /**\n * We consider the elements and attributes below to be safe. Ideally\n * don't add any new ones but feel free to remove unwanted ones.\n */\n\n /* allowed element names */\n let ALLOWED_TAGS = null;\n const DEFAULT_ALLOWED_TAGS = addToSet({}, [\n ...TAGS.html,\n ...TAGS.svg,\n ...TAGS.svgFilters,\n ...TAGS.mathMl,\n ...TAGS.text,\n ]);\n\n /* Allowed attribute names */\n let ALLOWED_ATTR = null;\n const DEFAULT_ALLOWED_ATTR = addToSet({}, [\n ...ATTRS.html,\n ...ATTRS.svg,\n ...ATTRS.mathMl,\n ...ATTRS.xml,\n ]);\n\n /*\n * Configure how DOMPUrify should handle custom elements and their attributes as well as customized built-in elements.\n * @property {RegExp|Function|null} tagNameCheck one of [null, regexPattern, predicate]. Default: `null` (disallow any custom elements)\n * @property {RegExp|Function|null} attributeNameCheck one of [null, regexPattern, predicate]. Default: `null` (disallow any attributes not on the allow list)\n * @property {boolean} allowCustomizedBuiltInElements allow custom elements derived from built-ins if they pass CUSTOM_ELEMENT_HANDLING.tagNameCheck. Default: `false`.\n */\n let CUSTOM_ELEMENT_HANDLING = Object.seal(\n create(null, {\n tagNameCheck: {\n writable: true,\n configurable: false,\n enumerable: true,\n value: null,\n },\n attributeNameCheck: {\n writable: true,\n configurable: false,\n enumerable: true,\n value: null,\n },\n allowCustomizedBuiltInElements: {\n writable: true,\n configurable: false,\n enumerable: true,\n value: false,\n },\n })\n );\n\n /* Explicitly forbidden tags (overrides ALLOWED_TAGS/ADD_TAGS) */\n let FORBID_TAGS = null;\n\n /* Explicitly forbidden attributes (overrides ALLOWED_ATTR/ADD_ATTR) */\n let FORBID_ATTR = null;\n\n /* Decide if ARIA attributes are okay */\n let ALLOW_ARIA_ATTR = true;\n\n /* Decide if custom data attributes are okay */\n let ALLOW_DATA_ATTR = true;\n\n /* Decide if unknown protocols are okay */\n let ALLOW_UNKNOWN_PROTOCOLS = false;\n\n /* Decide if self-closing tags in attributes are allowed.\n * Usually removed due to a mXSS issue in jQuery 3.0 */\n let ALLOW_SELF_CLOSE_IN_ATTR = true;\n\n /* Output should be safe for common template engines.\n * This means, DOMPurify removes data attributes, mustaches and ERB\n */\n let SAFE_FOR_TEMPLATES = false;\n\n /* Output should be safe even for XML used within HTML and alike.\n * This means, DOMPurify removes comments when containing risky content.\n */\n let SAFE_FOR_XML = true;\n\n /* Decide if document with ... should be returned */\n let WHOLE_DOCUMENT = false;\n\n /* Track whether config is already set on this instance of DOMPurify. */\n let SET_CONFIG = false;\n\n /* Decide if all elements (e.g. style, script) must be children of\n * document.body. By default, browsers might move them to document.head */\n let FORCE_BODY = false;\n\n /* Decide if a DOM `HTMLBodyElement` should be returned, instead of a html\n * string (or a TrustedHTML object if Trusted Types are supported).\n * If `WHOLE_DOCUMENT` is enabled a `HTMLHtmlElement` will be returned instead\n */\n let RETURN_DOM = false;\n\n /* Decide if a DOM `DocumentFragment` should be returned, instead of a html\n * string (or a TrustedHTML object if Trusted Types are supported) */\n let RETURN_DOM_FRAGMENT = false;\n\n /* Try to return a Trusted Type object instead of a string, return a string in\n * case Trusted Types are not supported */\n let RETURN_TRUSTED_TYPE = false;\n\n /* Output should be free from DOM clobbering attacks?\n * This sanitizes markups named with colliding, clobberable built-in DOM APIs.\n */\n let SANITIZE_DOM = true;\n\n /* Achieve full DOM Clobbering protection by isolating the namespace of named\n * properties and JS variables, mitigating attacks that abuse the HTML/DOM spec rules.\n *\n * HTML/DOM spec rules that enable DOM Clobbering:\n * - Named Access on Window (§7.3.3)\n * - DOM Tree Accessors (§3.1.5)\n * - Form Element Parent-Child Relations (§4.10.3)\n * - Iframe srcdoc / Nested WindowProxies (§4.8.5)\n * - HTMLCollection (§4.2.10.2)\n *\n * Namespace isolation is implemented by prefixing `id` and `name` attributes\n * with a constant string, i.e., `user-content-`\n */\n let SANITIZE_NAMED_PROPS = false;\n const SANITIZE_NAMED_PROPS_PREFIX = 'user-content-';\n\n /* Keep element content when removing element? */\n let KEEP_CONTENT = true;\n\n /* If a `Node` is passed to sanitize(), then performs sanitization in-place instead\n * of importing it into a new Document and returning a sanitized copy */\n let IN_PLACE = false;\n\n /* Allow usage of profiles like html, svg and mathMl */\n let USE_PROFILES = {};\n\n /* Tags to ignore content of when KEEP_CONTENT is true */\n let FORBID_CONTENTS = null;\n const DEFAULT_FORBID_CONTENTS = addToSet({}, [\n 'annotation-xml',\n 'audio',\n 'colgroup',\n 'desc',\n 'foreignobject',\n 'head',\n 'iframe',\n 'math',\n 'mi',\n 'mn',\n 'mo',\n 'ms',\n 'mtext',\n 'noembed',\n 'noframes',\n 'noscript',\n 'plaintext',\n 'script',\n 'style',\n 'svg',\n 'template',\n 'thead',\n 'title',\n 'video',\n 'xmp',\n ]);\n\n /* Tags that are safe for data: URIs */\n let DATA_URI_TAGS = null;\n const DEFAULT_DATA_URI_TAGS = addToSet({}, [\n 'audio',\n 'video',\n 'img',\n 'source',\n 'image',\n 'track',\n ]);\n\n /* Attributes safe for values like \"javascript:\" */\n let URI_SAFE_ATTRIBUTES = null;\n const DEFAULT_URI_SAFE_ATTRIBUTES = addToSet({}, [\n 'alt',\n 'class',\n 'for',\n 'id',\n 'label',\n 'name',\n 'pattern',\n 'placeholder',\n 'role',\n 'summary',\n 'title',\n 'value',\n 'style',\n 'xmlns',\n ]);\n\n const MATHML_NAMESPACE = 'http://www.w3.org/1998/Math/MathML';\n const SVG_NAMESPACE = 'http://www.w3.org/2000/svg';\n const HTML_NAMESPACE = 'http://www.w3.org/1999/xhtml';\n /* Document namespace */\n let NAMESPACE = HTML_NAMESPACE;\n let IS_EMPTY_INPUT = false;\n\n /* Allowed XHTML+XML namespaces */\n let ALLOWED_NAMESPACES = null;\n const DEFAULT_ALLOWED_NAMESPACES = addToSet(\n {},\n [MATHML_NAMESPACE, SVG_NAMESPACE, HTML_NAMESPACE],\n stringToString\n );\n\n /* Parsing of strict XHTML documents */\n let PARSER_MEDIA_TYPE = null;\n const SUPPORTED_PARSER_MEDIA_TYPES = ['application/xhtml+xml', 'text/html'];\n const DEFAULT_PARSER_MEDIA_TYPE = 'text/html';\n let transformCaseFunc = null;\n\n /* Keep a reference to config to pass to hooks */\n let CONFIG = null;\n\n /* Ideally, do not touch anything below this line */\n /* ______________________________________________ */\n\n const formElement = document.createElement('form');\n\n const isRegexOrFunction = function (testValue) {\n return testValue instanceof RegExp || testValue instanceof Function;\n };\n\n /**\n * _parseConfig\n *\n * @param {Object} cfg optional config literal\n */\n // eslint-disable-next-line complexity\n const _parseConfig = function (cfg = {}) {\n if (CONFIG && CONFIG === cfg) {\n return;\n }\n\n /* Shield configuration object from tampering */\n if (!cfg || typeof cfg !== 'object') {\n cfg = {};\n }\n\n /* Shield configuration object from prototype pollution */\n cfg = clone(cfg);\n\n PARSER_MEDIA_TYPE =\n // eslint-disable-next-line unicorn/prefer-includes\n SUPPORTED_PARSER_MEDIA_TYPES.indexOf(cfg.PARSER_MEDIA_TYPE) === -1\n ? DEFAULT_PARSER_MEDIA_TYPE\n : cfg.PARSER_MEDIA_TYPE;\n\n // HTML tags and attributes are not case-sensitive, converting to lowercase. Keeping XHTML as is.\n transformCaseFunc =\n PARSER_MEDIA_TYPE === 'application/xhtml+xml'\n ? stringToString\n : stringToLowerCase;\n\n /* Set configuration parameters */\n ALLOWED_TAGS = objectHasOwnProperty(cfg, 'ALLOWED_TAGS')\n ? addToSet({}, cfg.ALLOWED_TAGS, transformCaseFunc)\n : DEFAULT_ALLOWED_TAGS;\n ALLOWED_ATTR = objectHasOwnProperty(cfg, 'ALLOWED_ATTR')\n ? addToSet({}, cfg.ALLOWED_ATTR, transformCaseFunc)\n : DEFAULT_ALLOWED_ATTR;\n ALLOWED_NAMESPACES = objectHasOwnProperty(cfg, 'ALLOWED_NAMESPACES')\n ? addToSet({}, cfg.ALLOWED_NAMESPACES, stringToString)\n : DEFAULT_ALLOWED_NAMESPACES;\n URI_SAFE_ATTRIBUTES = objectHasOwnProperty(cfg, 'ADD_URI_SAFE_ATTR')\n ? addToSet(\n clone(DEFAULT_URI_SAFE_ATTRIBUTES), // eslint-disable-line indent\n cfg.ADD_URI_SAFE_ATTR, // eslint-disable-line indent\n transformCaseFunc // eslint-disable-line indent\n ) // eslint-disable-line indent\n : DEFAULT_URI_SAFE_ATTRIBUTES;\n DATA_URI_TAGS = objectHasOwnProperty(cfg, 'ADD_DATA_URI_TAGS')\n ? addToSet(\n clone(DEFAULT_DATA_URI_TAGS), // eslint-disable-line indent\n cfg.ADD_DATA_URI_TAGS, // eslint-disable-line indent\n transformCaseFunc // eslint-disable-line indent\n ) // eslint-disable-line indent\n : DEFAULT_DATA_URI_TAGS;\n FORBID_CONTENTS = objectHasOwnProperty(cfg, 'FORBID_CONTENTS')\n ? addToSet({}, cfg.FORBID_CONTENTS, transformCaseFunc)\n : DEFAULT_FORBID_CONTENTS;\n FORBID_TAGS = objectHasOwnProperty(cfg, 'FORBID_TAGS')\n ? addToSet({}, cfg.FORBID_TAGS, transformCaseFunc)\n : {};\n FORBID_ATTR = objectHasOwnProperty(cfg, 'FORBID_ATTR')\n ? addToSet({}, cfg.FORBID_ATTR, transformCaseFunc)\n : {};\n USE_PROFILES = objectHasOwnProperty(cfg, 'USE_PROFILES')\n ? cfg.USE_PROFILES\n : false;\n ALLOW_ARIA_ATTR = cfg.ALLOW_ARIA_ATTR !== false; // Default true\n ALLOW_DATA_ATTR = cfg.ALLOW_DATA_ATTR !== false; // Default true\n ALLOW_UNKNOWN_PROTOCOLS = cfg.ALLOW_UNKNOWN_PROTOCOLS || false; // Default false\n ALLOW_SELF_CLOSE_IN_ATTR = cfg.ALLOW_SELF_CLOSE_IN_ATTR !== false; // Default true\n SAFE_FOR_TEMPLATES = cfg.SAFE_FOR_TEMPLATES || false; // Default false\n SAFE_FOR_XML = cfg.SAFE_FOR_XML !== false; // Default true\n WHOLE_DOCUMENT = cfg.WHOLE_DOCUMENT || false; // Default false\n RETURN_DOM = cfg.RETURN_DOM || false; // Default false\n RETURN_DOM_FRAGMENT = cfg.RETURN_DOM_FRAGMENT || false; // Default false\n RETURN_TRUSTED_TYPE = cfg.RETURN_TRUSTED_TYPE || false; // Default false\n FORCE_BODY = cfg.FORCE_BODY || false; // Default false\n SANITIZE_DOM = cfg.SANITIZE_DOM !== false; // Default true\n SANITIZE_NAMED_PROPS = cfg.SANITIZE_NAMED_PROPS || false; // Default false\n KEEP_CONTENT = cfg.KEEP_CONTENT !== false; // Default true\n IN_PLACE = cfg.IN_PLACE || false; // Default false\n IS_ALLOWED_URI = cfg.ALLOWED_URI_REGEXP || EXPRESSIONS.IS_ALLOWED_URI;\n NAMESPACE = cfg.NAMESPACE || HTML_NAMESPACE;\n CUSTOM_ELEMENT_HANDLING = cfg.CUSTOM_ELEMENT_HANDLING || {};\n if (\n cfg.CUSTOM_ELEMENT_HANDLING &&\n isRegexOrFunction(cfg.CUSTOM_ELEMENT_HANDLING.tagNameCheck)\n ) {\n CUSTOM_ELEMENT_HANDLING.tagNameCheck =\n cfg.CUSTOM_ELEMENT_HANDLING.tagNameCheck;\n }\n\n if (\n cfg.CUSTOM_ELEMENT_HANDLING &&\n isRegexOrFunction(cfg.CUSTOM_ELEMENT_HANDLING.attributeNameCheck)\n ) {\n CUSTOM_ELEMENT_HANDLING.attributeNameCheck =\n cfg.CUSTOM_ELEMENT_HANDLING.attributeNameCheck;\n }\n\n if (\n cfg.CUSTOM_ELEMENT_HANDLING &&\n typeof cfg.CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements ===\n 'boolean'\n ) {\n CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements =\n cfg.CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements;\n }\n\n if (SAFE_FOR_TEMPLATES) {\n ALLOW_DATA_ATTR = false;\n }\n\n if (RETURN_DOM_FRAGMENT) {\n RETURN_DOM = true;\n }\n\n /* Parse profile info */\n if (USE_PROFILES) {\n ALLOWED_TAGS = addToSet({}, TAGS.text);\n ALLOWED_ATTR = [];\n if (USE_PROFILES.html === true) {\n addToSet(ALLOWED_TAGS, TAGS.html);\n addToSet(ALLOWED_ATTR, ATTRS.html);\n }\n\n if (USE_PROFILES.svg === true) {\n addToSet(ALLOWED_TAGS, TAGS.svg);\n addToSet(ALLOWED_ATTR, ATTRS.svg);\n addToSet(ALLOWED_ATTR, ATTRS.xml);\n }\n\n if (USE_PROFILES.svgFilters === true) {\n addToSet(ALLOWED_TAGS, TAGS.svgFilters);\n addToSet(ALLOWED_ATTR, ATTRS.svg);\n addToSet(ALLOWED_ATTR, ATTRS.xml);\n }\n\n if (USE_PROFILES.mathMl === true) {\n addToSet(ALLOWED_TAGS, TAGS.mathMl);\n addToSet(ALLOWED_ATTR, ATTRS.mathMl);\n addToSet(ALLOWED_ATTR, ATTRS.xml);\n }\n }\n\n /* Merge configuration parameters */\n if (cfg.ADD_TAGS) {\n if (ALLOWED_TAGS === DEFAULT_ALLOWED_TAGS) {\n ALLOWED_TAGS = clone(ALLOWED_TAGS);\n }\n\n addToSet(ALLOWED_TAGS, cfg.ADD_TAGS, transformCaseFunc);\n }\n\n if (cfg.ADD_ATTR) {\n if (ALLOWED_ATTR === DEFAULT_ALLOWED_ATTR) {\n ALLOWED_ATTR = clone(ALLOWED_ATTR);\n }\n\n addToSet(ALLOWED_ATTR, cfg.ADD_ATTR, transformCaseFunc);\n }\n\n if (cfg.ADD_URI_SAFE_ATTR) {\n addToSet(URI_SAFE_ATTRIBUTES, cfg.ADD_URI_SAFE_ATTR, transformCaseFunc);\n }\n\n if (cfg.FORBID_CONTENTS) {\n if (FORBID_CONTENTS === DEFAULT_FORBID_CONTENTS) {\n FORBID_CONTENTS = clone(FORBID_CONTENTS);\n }\n\n addToSet(FORBID_CONTENTS, cfg.FORBID_CONTENTS, transformCaseFunc);\n }\n\n /* Add #text in case KEEP_CONTENT is set to true */\n if (KEEP_CONTENT) {\n ALLOWED_TAGS['#text'] = true;\n }\n\n /* Add html, head and body to ALLOWED_TAGS in case WHOLE_DOCUMENT is true */\n if (WHOLE_DOCUMENT) {\n addToSet(ALLOWED_TAGS, ['html', 'head', 'body']);\n }\n\n /* Add tbody to ALLOWED_TAGS in case tables are permitted, see #286, #365 */\n if (ALLOWED_TAGS.table) {\n addToSet(ALLOWED_TAGS, ['tbody']);\n delete FORBID_TAGS.tbody;\n }\n\n if (cfg.TRUSTED_TYPES_POLICY) {\n if (typeof cfg.TRUSTED_TYPES_POLICY.createHTML !== 'function') {\n throw typeErrorCreate(\n 'TRUSTED_TYPES_POLICY configuration option must provide a \"createHTML\" hook.'\n );\n }\n\n if (typeof cfg.TRUSTED_TYPES_POLICY.createScriptURL !== 'function') {\n throw typeErrorCreate(\n 'TRUSTED_TYPES_POLICY configuration option must provide a \"createScriptURL\" hook.'\n );\n }\n\n // Overwrite existing TrustedTypes policy.\n trustedTypesPolicy = cfg.TRUSTED_TYPES_POLICY;\n\n // Sign local variables required by `sanitize`.\n emptyHTML = trustedTypesPolicy.createHTML('');\n } else {\n // Uninitialized policy, attempt to initialize the internal dompurify policy.\n if (trustedTypesPolicy === undefined) {\n trustedTypesPolicy = _createTrustedTypesPolicy(\n trustedTypes,\n currentScript\n );\n }\n\n // If creating the internal policy succeeded sign internal variables.\n if (trustedTypesPolicy !== null && typeof emptyHTML === 'string') {\n emptyHTML = trustedTypesPolicy.createHTML('');\n }\n }\n\n // Prevent further manipulation of configuration.\n // Not available in IE8, Safari 5, etc.\n if (freeze) {\n freeze(cfg);\n }\n\n CONFIG = cfg;\n };\n\n const MATHML_TEXT_INTEGRATION_POINTS = addToSet({}, [\n 'mi',\n 'mo',\n 'mn',\n 'ms',\n 'mtext',\n ]);\n\n const HTML_INTEGRATION_POINTS = addToSet({}, ['annotation-xml']);\n\n // Certain elements are allowed in both SVG and HTML\n // namespace. We need to specify them explicitly\n // so that they don't get erroneously deleted from\n // HTML namespace.\n const COMMON_SVG_AND_HTML_ELEMENTS = addToSet({}, [\n 'title',\n 'style',\n 'font',\n 'a',\n 'script',\n ]);\n\n /* Keep track of all possible SVG and MathML tags\n * so that we can perform the namespace checks\n * correctly. */\n const ALL_SVG_TAGS = addToSet({}, [\n ...TAGS.svg,\n ...TAGS.svgFilters,\n ...TAGS.svgDisallowed,\n ]);\n const ALL_MATHML_TAGS = addToSet({}, [\n ...TAGS.mathMl,\n ...TAGS.mathMlDisallowed,\n ]);\n\n /**\n * @param {Element} element a DOM element whose namespace is being checked\n * @returns {boolean} Return false if the element has a\n * namespace that a spec-compliant parser would never\n * return. Return true otherwise.\n */\n const _checkValidNamespace = function (element) {\n let parent = getParentNode(element);\n\n // In JSDOM, if we're inside shadow DOM, then parentNode\n // can be null. We just simulate parent in this case.\n if (!parent || !parent.tagName) {\n parent = {\n namespaceURI: NAMESPACE,\n tagName: 'template',\n };\n }\n\n const tagName = stringToLowerCase(element.tagName);\n const parentTagName = stringToLowerCase(parent.tagName);\n\n if (!ALLOWED_NAMESPACES[element.namespaceURI]) {\n return false;\n }\n\n if (element.namespaceURI === SVG_NAMESPACE) {\n // The only way to switch from HTML namespace to SVG\n // is via . If it happens via any other tag, then\n // it should be killed.\n if (parent.namespaceURI === HTML_NAMESPACE) {\n return tagName === 'svg';\n }\n\n // The only way to switch from MathML to SVG is via`\n // svg if parent is either or MathML\n // text integration points.\n if (parent.namespaceURI === MATHML_NAMESPACE) {\n return (\n tagName === 'svg' &&\n (parentTagName === 'annotation-xml' ||\n MATHML_TEXT_INTEGRATION_POINTS[parentTagName])\n );\n }\n\n // We only allow elements that are defined in SVG\n // spec. All others are disallowed in SVG namespace.\n return Boolean(ALL_SVG_TAGS[tagName]);\n }\n\n if (element.namespaceURI === MATHML_NAMESPACE) {\n // The only way to switch from HTML namespace to MathML\n // is via . If it happens via any other tag, then\n // it should be killed.\n if (parent.namespaceURI === HTML_NAMESPACE) {\n return tagName === 'math';\n }\n\n // The only way to switch from SVG to MathML is via\n // and HTML integration points\n if (parent.namespaceURI === SVG_NAMESPACE) {\n return tagName === 'math' && HTML_INTEGRATION_POINTS[parentTagName];\n }\n\n // We only allow elements that are defined in MathML\n // spec. All others are disallowed in MathML namespace.\n return Boolean(ALL_MATHML_TAGS[tagName]);\n }\n\n if (element.namespaceURI === HTML_NAMESPACE) {\n // The only way to switch from SVG to HTML is via\n // HTML integration points, and from MathML to HTML\n // is via MathML text integration points\n if (\n parent.namespaceURI === SVG_NAMESPACE &&\n !HTML_INTEGRATION_POINTS[parentTagName]\n ) {\n return false;\n }\n\n if (\n parent.namespaceURI === MATHML_NAMESPACE &&\n !MATHML_TEXT_INTEGRATION_POINTS[parentTagName]\n ) {\n return false;\n }\n\n // We disallow tags that are specific for MathML\n // or SVG and should never appear in HTML namespace\n return (\n !ALL_MATHML_TAGS[tagName] &&\n (COMMON_SVG_AND_HTML_ELEMENTS[tagName] || !ALL_SVG_TAGS[tagName])\n );\n }\n\n // For XHTML and XML documents that support custom namespaces\n if (\n PARSER_MEDIA_TYPE === 'application/xhtml+xml' &&\n ALLOWED_NAMESPACES[element.namespaceURI]\n ) {\n return true;\n }\n\n // The code should never reach this place (this means\n // that the element somehow got namespace that is not\n // HTML, SVG, MathML or allowed via ALLOWED_NAMESPACES).\n // Return false just in case.\n return false;\n };\n\n /**\n * _forceRemove\n *\n * @param {Node} node a DOM node\n */\n const _forceRemove = function (node) {\n arrayPush(DOMPurify.removed, { element: node });\n\n try {\n // eslint-disable-next-line unicorn/prefer-dom-node-remove\n getParentNode(node).removeChild(node);\n } catch (_) {\n remove(node);\n }\n };\n\n /**\n * _removeAttribute\n *\n * @param {String} name an Attribute name\n * @param {Node} node a DOM node\n */\n const _removeAttribute = function (name, node) {\n try {\n arrayPush(DOMPurify.removed, {\n attribute: node.getAttributeNode(name),\n from: node,\n });\n } catch (_) {\n arrayPush(DOMPurify.removed, {\n attribute: null,\n from: node,\n });\n }\n\n node.removeAttribute(name);\n\n // We void attribute values for unremovable \"is\"\" attributes\n if (name === 'is' && !ALLOWED_ATTR[name]) {\n if (RETURN_DOM || RETURN_DOM_FRAGMENT) {\n try {\n _forceRemove(node);\n } catch (_) {}\n } else {\n try {\n node.setAttribute(name, '');\n } catch (_) {}\n }\n }\n };\n\n /**\n * _initDocument\n *\n * @param {String} dirty a string of dirty markup\n * @return {Document} a DOM, filled with the dirty markup\n */\n const _initDocument = function (dirty) {\n /* Create a HTML document */\n let doc = null;\n let leadingWhitespace = null;\n\n if (FORCE_BODY) {\n dirty = '' + dirty;\n } else {\n /* If FORCE_BODY isn't used, leading whitespace needs to be preserved manually */\n const matches = stringMatch(dirty, /^[\\r\\n\\t ]+/);\n leadingWhitespace = matches && matches[0];\n }\n\n if (\n PARSER_MEDIA_TYPE === 'application/xhtml+xml' &&\n NAMESPACE === HTML_NAMESPACE\n ) {\n // Root of XHTML doc must contain xmlns declaration (see https://www.w3.org/TR/xhtml1/normative.html#strict)\n dirty =\n ' ' +\n dirty +\n '';\n }\n\n const dirtyPayload = trustedTypesPolicy\n ? trustedTypesPolicy.createHTML(dirty)\n : dirty;\n /*\n * Use the DOMParser API by default, fallback later if needs be\n * DOMParser not work for svg when has multiple root element.\n */\n if (NAMESPACE === HTML_NAMESPACE) {\n try {\n doc = new DOMParser().parseFromString(dirtyPayload, PARSER_MEDIA_TYPE);\n } catch (_) {}\n }\n\n /* Use createHTMLDocument in case DOMParser is not available */\n if (!doc || !doc.documentElement) {\n doc = implementation.createDocument(NAMESPACE, 'template', null);\n try {\n doc.documentElement.innerHTML = IS_EMPTY_INPUT\n ? emptyHTML\n : dirtyPayload;\n } catch (_) {\n // Syntax error if dirtyPayload is invalid xml\n }\n }\n\n const body = doc.body || doc.documentElement;\n\n if (dirty && leadingWhitespace) {\n body.insertBefore(\n document.createTextNode(leadingWhitespace),\n body.childNodes[0] || null\n );\n }\n\n /* Work on whole document or just its body */\n if (NAMESPACE === HTML_NAMESPACE) {\n return getElementsByTagName.call(\n doc,\n WHOLE_DOCUMENT ? 'html' : 'body'\n )[0];\n }\n\n return WHOLE_DOCUMENT ? doc.documentElement : body;\n };\n\n /**\n * Creates a NodeIterator object that you can use to traverse filtered lists of nodes or elements in a document.\n *\n * @param {Node} root The root element or node to start traversing on.\n * @return {NodeIterator} The created NodeIterator\n */\n const _createNodeIterator = function (root) {\n return createNodeIterator.call(\n root.ownerDocument || root,\n root,\n // eslint-disable-next-line no-bitwise\n NodeFilter.SHOW_ELEMENT |\n NodeFilter.SHOW_COMMENT |\n NodeFilter.SHOW_TEXT |\n NodeFilter.SHOW_PROCESSING_INSTRUCTION |\n NodeFilter.SHOW_CDATA_SECTION,\n null\n );\n };\n\n /**\n * _isClobbered\n *\n * @param {Node} elm element to check for clobbering attacks\n * @return {Boolean} true if clobbered, false if safe\n */\n const _isClobbered = function (elm) {\n return (\n elm instanceof HTMLFormElement &&\n (typeof elm.nodeName !== 'string' ||\n typeof elm.textContent !== 'string' ||\n typeof elm.removeChild !== 'function' ||\n !(elm.attributes instanceof NamedNodeMap) ||\n typeof elm.removeAttribute !== 'function' ||\n typeof elm.setAttribute !== 'function' ||\n typeof elm.namespaceURI !== 'string' ||\n typeof elm.insertBefore !== 'function' ||\n typeof elm.hasChildNodes !== 'function')\n );\n };\n\n /**\n * Checks whether the given object is a DOM node.\n *\n * @param {Node} object object to check whether it's a DOM node\n * @return {Boolean} true is object is a DOM node\n */\n const _isNode = function (object) {\n return typeof Node === 'function' && object instanceof Node;\n };\n\n /**\n * _executeHook\n * Execute user configurable hooks\n *\n * @param {String} entryPoint Name of the hook's entry point\n * @param {Node} currentNode node to work on with the hook\n * @param {Object} data additional hook parameters\n */\n const _executeHook = function (entryPoint, currentNode, data) {\n if (!hooks[entryPoint]) {\n return;\n }\n\n arrayForEach(hooks[entryPoint], (hook) => {\n hook.call(DOMPurify, currentNode, data, CONFIG);\n });\n };\n\n /**\n * _sanitizeElements\n *\n * @protect nodeName\n * @protect textContent\n * @protect removeChild\n *\n * @param {Node} currentNode to check for permission to exist\n * @return {Boolean} true if node was killed, false if left alive\n */\n const _sanitizeElements = function (currentNode) {\n let content = null;\n\n /* Execute a hook if present */\n _executeHook('beforeSanitizeElements', currentNode, null);\n\n /* Check if element is clobbered or can clobber */\n if (_isClobbered(currentNode)) {\n _forceRemove(currentNode);\n return true;\n }\n\n /* Now let's check the element's type and name */\n const tagName = transformCaseFunc(currentNode.nodeName);\n\n /* Execute a hook if present */\n _executeHook('uponSanitizeElement', currentNode, {\n tagName,\n allowedTags: ALLOWED_TAGS,\n });\n\n /* Detect mXSS attempts abusing namespace confusion */\n if (\n currentNode.hasChildNodes() &&\n !_isNode(currentNode.firstElementChild) &&\n regExpTest(/<[/\\w]/g, currentNode.innerHTML) &&\n regExpTest(/<[/\\w]/g, currentNode.textContent)\n ) {\n _forceRemove(currentNode);\n return true;\n }\n\n /* Remove any occurrence of processing instructions */\n if (currentNode.nodeType === NODE_TYPE.progressingInstruction) {\n _forceRemove(currentNode);\n return true;\n }\n\n /* Remove any kind of possibly harmful comments */\n if (\n SAFE_FOR_XML &&\n currentNode.nodeType === NODE_TYPE.comment &&\n regExpTest(/<[/\\w]/g, currentNode.data)\n ) {\n _forceRemove(currentNode);\n return true;\n }\n\n /* Remove element if anything forbids its presence */\n if (!ALLOWED_TAGS[tagName] || FORBID_TAGS[tagName]) {\n /* Check if we have a custom element to handle */\n if (!FORBID_TAGS[tagName] && _isBasicCustomElement(tagName)) {\n if (\n CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof RegExp &&\n regExpTest(CUSTOM_ELEMENT_HANDLING.tagNameCheck, tagName)\n ) {\n return false;\n }\n\n if (\n CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof Function &&\n CUSTOM_ELEMENT_HANDLING.tagNameCheck(tagName)\n ) {\n return false;\n }\n }\n\n /* Keep content except for bad-listed elements */\n if (KEEP_CONTENT && !FORBID_CONTENTS[tagName]) {\n const parentNode = getParentNode(currentNode) || currentNode.parentNode;\n const childNodes = getChildNodes(currentNode) || currentNode.childNodes;\n\n if (childNodes && parentNode) {\n const childCount = childNodes.length;\n\n for (let i = childCount - 1; i >= 0; --i) {\n const childClone = cloneNode(childNodes[i], true);\n childClone.__removalCount = (currentNode.__removalCount || 0) + 1;\n parentNode.insertBefore(childClone, getNextSibling(currentNode));\n }\n }\n }\n\n _forceRemove(currentNode);\n return true;\n }\n\n /* Check whether element has a valid namespace */\n if (currentNode instanceof Element && !_checkValidNamespace(currentNode)) {\n _forceRemove(currentNode);\n return true;\n }\n\n /* Make sure that older browsers don't get fallback-tag mXSS */\n if (\n (tagName === 'noscript' ||\n tagName === 'noembed' ||\n tagName === 'noframes') &&\n regExpTest(/<\\/no(script|embed|frames)/i, currentNode.innerHTML)\n ) {\n _forceRemove(currentNode);\n return true;\n }\n\n /* Sanitize element content to be template-safe */\n if (SAFE_FOR_TEMPLATES && currentNode.nodeType === NODE_TYPE.text) {\n /* Get the element's text content */\n content = currentNode.textContent;\n\n arrayForEach([MUSTACHE_EXPR, ERB_EXPR, TMPLIT_EXPR], (expr) => {\n content = stringReplace(content, expr, ' ');\n });\n\n if (currentNode.textContent !== content) {\n arrayPush(DOMPurify.removed, { element: currentNode.cloneNode() });\n currentNode.textContent = content;\n }\n }\n\n /* Execute a hook if present */\n _executeHook('afterSanitizeElements', currentNode, null);\n\n return false;\n };\n\n /**\n * _isValidAttribute\n *\n * @param {string} lcTag Lowercase tag name of containing element.\n * @param {string} lcName Lowercase attribute name.\n * @param {string} value Attribute value.\n * @return {Boolean} Returns true if `value` is valid, otherwise false.\n */\n // eslint-disable-next-line complexity\n const _isValidAttribute = function (lcTag, lcName, value) {\n /* Make sure attribute cannot clobber */\n if (\n SANITIZE_DOM &&\n (lcName === 'id' || lcName === 'name') &&\n (value in document || value in formElement)\n ) {\n return false;\n }\n\n /* Allow valid data-* attributes: At least one character after \"-\"\n (https://html.spec.whatwg.org/multipage/dom.html#embedding-custom-non-visible-data-with-the-data-*-attributes)\n XML-compatible (https://html.spec.whatwg.org/multipage/infrastructure.html#xml-compatible and http://www.w3.org/TR/xml/#d0e804)\n We don't need to check the value; it's always URI safe. */\n if (\n ALLOW_DATA_ATTR &&\n !FORBID_ATTR[lcName] &&\n regExpTest(DATA_ATTR, lcName)\n ) {\n // This attribute is safe\n } else if (ALLOW_ARIA_ATTR && regExpTest(ARIA_ATTR, lcName)) {\n // This attribute is safe\n /* Otherwise, check the name is permitted */\n } else if (!ALLOWED_ATTR[lcName] || FORBID_ATTR[lcName]) {\n if (\n // First condition does a very basic check if a) it's basically a valid custom element tagname AND\n // b) if the tagName passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.tagNameCheck\n // and c) if the attribute name passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.attributeNameCheck\n (_isBasicCustomElement(lcTag) &&\n ((CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof RegExp &&\n regExpTest(CUSTOM_ELEMENT_HANDLING.tagNameCheck, lcTag)) ||\n (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof Function &&\n CUSTOM_ELEMENT_HANDLING.tagNameCheck(lcTag))) &&\n ((CUSTOM_ELEMENT_HANDLING.attributeNameCheck instanceof RegExp &&\n regExpTest(CUSTOM_ELEMENT_HANDLING.attributeNameCheck, lcName)) ||\n (CUSTOM_ELEMENT_HANDLING.attributeNameCheck instanceof Function &&\n CUSTOM_ELEMENT_HANDLING.attributeNameCheck(lcName)))) ||\n // Alternative, second condition checks if it's an `is`-attribute, AND\n // the value passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.tagNameCheck\n (lcName === 'is' &&\n CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements &&\n ((CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof RegExp &&\n regExpTest(CUSTOM_ELEMENT_HANDLING.tagNameCheck, value)) ||\n (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof Function &&\n CUSTOM_ELEMENT_HANDLING.tagNameCheck(value))))\n ) {\n // If user has supplied a regexp or function in CUSTOM_ELEMENT_HANDLING.tagNameCheck, we need to also allow derived custom elements using the same tagName test.\n // Additionally, we need to allow attributes passing the CUSTOM_ELEMENT_HANDLING.attributeNameCheck user has configured, as custom elements can define these at their own discretion.\n } else {\n return false;\n }\n /* Check value is safe. First, is attr inert? If so, is safe */\n } else if (URI_SAFE_ATTRIBUTES[lcName]) {\n // This attribute is safe\n /* Check no script, data or unknown possibly unsafe URI\n unless we know URI values are safe for that attribute */\n } else if (\n regExpTest(IS_ALLOWED_URI, stringReplace(value, ATTR_WHITESPACE, ''))\n ) {\n // This attribute is safe\n /* Keep image data URIs alive if src/xlink:href is allowed */\n /* Further prevent gadget XSS for dynamically built script tags */\n } else if (\n (lcName === 'src' || lcName === 'xlink:href' || lcName === 'href') &&\n lcTag !== 'script' &&\n stringIndexOf(value, 'data:') === 0 &&\n DATA_URI_TAGS[lcTag]\n ) {\n // This attribute is safe\n /* Allow unknown protocols: This provides support for links that\n are handled by protocol handlers which may be unknown ahead of\n time, e.g. fb:, spotify: */\n } else if (\n ALLOW_UNKNOWN_PROTOCOLS &&\n !regExpTest(IS_SCRIPT_OR_DATA, stringReplace(value, ATTR_WHITESPACE, ''))\n ) {\n // This attribute is safe\n /* Check for binary attributes */\n } else if (value) {\n return false;\n } else {\n // Binary attributes are safe at this point\n /* Anything else, presume unsafe, do not add it back */\n }\n\n return true;\n };\n\n /**\n * _isBasicCustomElement\n * checks if at least one dash is included in tagName, and it's not the first char\n * for more sophisticated checking see https://github.com/sindresorhus/validate-element-name\n *\n * @param {string} tagName name of the tag of the node to sanitize\n * @returns {boolean} Returns true if the tag name meets the basic criteria for a custom element, otherwise false.\n */\n const _isBasicCustomElement = function (tagName) {\n return tagName !== 'annotation-xml' && stringMatch(tagName, CUSTOM_ELEMENT);\n };\n\n /**\n * _sanitizeAttributes\n *\n * @protect attributes\n * @protect nodeName\n * @protect removeAttribute\n * @protect setAttribute\n *\n * @param {Node} currentNode to sanitize\n */\n const _sanitizeAttributes = function (currentNode) {\n /* Execute a hook if present */\n _executeHook('beforeSanitizeAttributes', currentNode, null);\n\n const { attributes } = currentNode;\n\n /* Check if we have attributes; if not we might have a text node */\n if (!attributes) {\n return;\n }\n\n const hookEvent = {\n attrName: '',\n attrValue: '',\n keepAttr: true,\n allowedAttributes: ALLOWED_ATTR,\n };\n let l = attributes.length;\n\n /* Go backwards over all attributes; safely remove bad ones */\n while (l--) {\n const attr = attributes[l];\n const { name, namespaceURI, value: attrValue } = attr;\n const lcName = transformCaseFunc(name);\n\n let value = name === 'value' ? attrValue : stringTrim(attrValue);\n\n /* Execute a hook if present */\n hookEvent.attrName = lcName;\n hookEvent.attrValue = value;\n hookEvent.keepAttr = true;\n hookEvent.forceKeepAttr = undefined; // Allows developers to see this is a property they can set\n _executeHook('uponSanitizeAttribute', currentNode, hookEvent);\n value = hookEvent.attrValue;\n\n /* Did the hooks approve of the attribute? */\n if (hookEvent.forceKeepAttr) {\n continue;\n }\n\n /* Remove attribute */\n _removeAttribute(name, currentNode);\n\n /* Did the hooks approve of the attribute? */\n if (!hookEvent.keepAttr) {\n continue;\n }\n\n /* Work around a security issue in jQuery 3.0 */\n if (!ALLOW_SELF_CLOSE_IN_ATTR && regExpTest(/\\/>/i, value)) {\n _removeAttribute(name, currentNode);\n continue;\n }\n\n /* Sanitize attribute content to be template-safe */\n if (SAFE_FOR_TEMPLATES) {\n arrayForEach([MUSTACHE_EXPR, ERB_EXPR, TMPLIT_EXPR], (expr) => {\n value = stringReplace(value, expr, ' ');\n });\n }\n\n /* Is `value` valid for this attribute? */\n const lcTag = transformCaseFunc(currentNode.nodeName);\n if (!_isValidAttribute(lcTag, lcName, value)) {\n continue;\n }\n\n /* Full DOM Clobbering protection via namespace isolation,\n * Prefix id and name attributes with `user-content-`\n */\n if (SANITIZE_NAMED_PROPS && (lcName === 'id' || lcName === 'name')) {\n // Remove the attribute with this value\n _removeAttribute(name, currentNode);\n\n // Prefix the value and later re-create the attribute with the sanitized value\n value = SANITIZE_NAMED_PROPS_PREFIX + value;\n }\n\n /* Work around a security issue with comments inside attributes */\n if (SAFE_FOR_XML && regExpTest(/((--!?|])>)|<\\/(style|title)/i, value)) {\n _removeAttribute(name, currentNode);\n continue;\n }\n\n /* Handle attributes that require Trusted Types */\n if (\n trustedTypesPolicy &&\n typeof trustedTypes === 'object' &&\n typeof trustedTypes.getAttributeType === 'function'\n ) {\n if (namespaceURI) {\n /* Namespaces are not yet supported, see https://bugs.chromium.org/p/chromium/issues/detail?id=1305293 */\n } else {\n switch (trustedTypes.getAttributeType(lcTag, lcName)) {\n case 'TrustedHTML': {\n value = trustedTypesPolicy.createHTML(value);\n break;\n }\n\n case 'TrustedScriptURL': {\n value = trustedTypesPolicy.createScriptURL(value);\n break;\n }\n\n default: {\n break;\n }\n }\n }\n }\n\n /* Handle invalid data-* attribute set by try-catching it */\n try {\n if (namespaceURI) {\n currentNode.setAttributeNS(namespaceURI, name, value);\n } else {\n /* Fallback to setAttribute() for browser-unrecognized namespaces e.g. \"x-schema\". */\n currentNode.setAttribute(name, value);\n }\n\n if (_isClobbered(currentNode)) {\n _forceRemove(currentNode);\n } else {\n arrayPop(DOMPurify.removed);\n }\n } catch (_) {}\n }\n\n /* Execute a hook if present */\n _executeHook('afterSanitizeAttributes', currentNode, null);\n };\n\n /**\n * _sanitizeShadowDOM\n *\n * @param {DocumentFragment} fragment to iterate over recursively\n */\n const _sanitizeShadowDOM = function (fragment) {\n let shadowNode = null;\n const shadowIterator = _createNodeIterator(fragment);\n\n /* Execute a hook if present */\n _executeHook('beforeSanitizeShadowDOM', fragment, null);\n\n while ((shadowNode = shadowIterator.nextNode())) {\n /* Execute a hook if present */\n _executeHook('uponSanitizeShadowNode', shadowNode, null);\n\n /* Sanitize tags and elements */\n if (_sanitizeElements(shadowNode)) {\n continue;\n }\n\n /* Deep shadow DOM detected */\n if (shadowNode.content instanceof DocumentFragment) {\n _sanitizeShadowDOM(shadowNode.content);\n }\n\n /* Check attributes, sanitize if necessary */\n _sanitizeAttributes(shadowNode);\n }\n\n /* Execute a hook if present */\n _executeHook('afterSanitizeShadowDOM', fragment, null);\n };\n\n /**\n * Sanitize\n * Public method providing core sanitation functionality\n *\n * @param {String|Node} dirty string or DOM node\n * @param {Object} cfg object\n */\n // eslint-disable-next-line complexity\n DOMPurify.sanitize = function (dirty, cfg = {}) {\n let body = null;\n let importedNode = null;\n let currentNode = null;\n let returnNode = null;\n /* Make sure we have a string to sanitize.\n DO NOT return early, as this will return the wrong type if\n the user has requested a DOM object rather than a string 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'object' && typeof module !== 'undefined' ? module.exports = factory() : + typeof define === 'function' && define.amd ? define(factory) : + (global = typeof globalThis !== 'undefined' ? globalThis : global || self, global.DOMPurify = factory()); +})(this, (function () { 'use strict'; + + const { + entries, + setPrototypeOf, + isFrozen, + getPrototypeOf, + getOwnPropertyDescriptor + } = Object; + let { + freeze, + seal, + create + } = Object; // eslint-disable-line import/no-mutable-exports + let { + apply, + construct + } = typeof Reflect !== 'undefined' && Reflect; + if (!freeze) { + freeze = function freeze(x) { + return x; + }; + } + if (!seal) { + seal = function seal(x) { + return x; + }; + } + if (!apply) { + apply = function apply(fun, thisValue, args) { + return fun.apply(thisValue, args); + }; + } + if (!construct) { + construct = function construct(Func, args) { + return new Func(...args); + }; + } + const arrayForEach = unapply(Array.prototype.forEach); + const arrayPop = unapply(Array.prototype.pop); + const arrayPush = unapply(Array.prototype.push); + const stringToLowerCase = unapply(String.prototype.toLowerCase); + const stringToString = unapply(String.prototype.toString); + const stringMatch = unapply(String.prototype.match); + const stringReplace = unapply(String.prototype.replace); + const stringIndexOf = unapply(String.prototype.indexOf); + const stringTrim = unapply(String.prototype.trim); + const objectHasOwnProperty = unapply(Object.prototype.hasOwnProperty); + const regExpTest = unapply(RegExp.prototype.test); + const typeErrorCreate = unconstruct(TypeError); + /** + * Creates a new function that calls the given function with a specified thisArg and arguments. + * + * @param func - The function to be wrapped and called. + * @returns A new function that calls the given function with a specified thisArg and arguments. + */ + function unapply(func) { + return function (thisArg) { + for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) { + args[_key - 1] = arguments[_key]; + } + return apply(func, thisArg, args); + }; + } + /** + * Creates a new function that constructs an instance of the given constructor function with the provided arguments. + * + * @param func - The constructor function to be wrapped and called. + * @returns A new function that constructs an instance of the given constructor function with the provided arguments. + */ + function unconstruct(func) { + return function () { + for (var _len2 = arguments.length, args = new Array(_len2), _key2 = 0; _key2 < _len2; _key2++) { + args[_key2] = arguments[_key2]; + } + return construct(func, args); + }; + } + /** + * Add properties to a lookup table + * + * @param set - The set to which elements will be added. + * @param array - The array containing elements to be added to the set. + * @param transformCaseFunc - An optional function to transform the case of each element before adding to the set. + * @returns The modified set with added elements. + */ + function addToSet(set, array) { + let transformCaseFunc = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : stringToLowerCase; + if (setPrototypeOf) { + // Make 'in' and truthy checks like Boolean(set.constructor) + // independent of any properties defined on Object.prototype. + // Prevent prototype setters from intercepting set as a this value. + setPrototypeOf(set, null); + } + let l = array.length; + while (l--) { + let element = array[l]; + if (typeof element === 'string') { + const lcElement = transformCaseFunc(element); + if (lcElement !== element) { + // Config presets (e.g. tags.js, attrs.js) are immutable. + if (!isFrozen(array)) { + array[l] = lcElement; + } + element = lcElement; + } + } + set[element] = true; + } + return set; + } + /** + * Clean up an array to harden against CSPP + * + * @param array - The array to be cleaned. + * @returns The cleaned version of the array + */ + function cleanArray(array) { + for (let index = 0; index < array.length; index++) { + const isPropertyExist = objectHasOwnProperty(array, index); + if (!isPropertyExist) { + array[index] = null; + } + } + return array; + } + /** + * Shallow clone an object + * + * @param object - The object to be cloned. + * @returns A new object that copies the original. + */ + function clone(object) { + const newObject = create(null); + for (const [property, value] of entries(object)) { + const isPropertyExist = objectHasOwnProperty(object, property); + if (isPropertyExist) { + if (Array.isArray(value)) { + newObject[property] = cleanArray(value); + } else if (value && typeof value === 'object' && value.constructor === Object) { + newObject[property] = clone(value); + } else { + newObject[property] = value; + } + } + } + return newObject; + } + /** + * This method automatically checks if the prop is function or getter and behaves accordingly. + * + * @param object - The object to look up the getter function in its prototype chain. + * @param prop - The property name for which to find the getter function. + * @returns The getter function found in the prototype chain or a fallback function. + */ + function lookupGetter(object, prop) { + while (object !== null) { + const desc = getOwnPropertyDescriptor(object, prop); + if (desc) { + if (desc.get) { + return unapply(desc.get); + } + if (typeof desc.value === 'function') { + return unapply(desc.value); + } + } + object = getPrototypeOf(object); + } + function fallbackValue() { + return null; + } + return fallbackValue; + } + + const html$1 = freeze(['a', 'abbr', 'acronym', 'address', 'area', 'article', 'aside', 'audio', 'b', 'bdi', 'bdo', 'big', 'blink', 'blockquote', 'body', 'br', 'button', 'canvas', 'caption', 'center', 'cite', 'code', 'col', 'colgroup', 'content', 'data', 'datalist', 'dd', 'decorator', 'del', 'details', 'dfn', 'dialog', 'dir', 'div', 'dl', 'dt', 'element', 'em', 'fieldset', 'figcaption', 'figure', 'font', 'footer', 'form', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'head', 'header', 'hgroup', 'hr', 'html', 'i', 'img', 'input', 'ins', 'kbd', 'label', 'legend', 'li', 'main', 'map', 'mark', 'marquee', 'menu', 'menuitem', 'meter', 'nav', 'nobr', 'ol', 'optgroup', 'option', 'output', 'p', 'picture', 'pre', 'progress', 'q', 'rp', 'rt', 'ruby', 's', 'samp', 'section', 'select', 'shadow', 'small', 'source', 'spacer', 'span', 'strike', 'strong', 'style', 'sub', 'summary', 'sup', 'table', 'tbody', 'td', 'template', 'textarea', 'tfoot', 'th', 'thead', 'time', 'tr', 'track', 'tt', 'u', 'ul', 'var', 'video', 'wbr']); + // SVG + const svg$1 = freeze(['svg', 'a', 'altglyph', 'altglyphdef', 'altglyphitem', 'animatecolor', 'animatemotion', 'animatetransform', 'circle', 'clippath', 'defs', 'desc', 'ellipse', 'filter', 'font', 'g', 'glyph', 'glyphref', 'hkern', 'image', 'line', 'lineargradient', 'marker', 'mask', 'metadata', 'mpath', 'path', 'pattern', 'polygon', 'polyline', 'radialgradient', 'rect', 'stop', 'style', 'switch', 'symbol', 'text', 'textpath', 'title', 'tref', 'tspan', 'view', 'vkern']); + const svgFilters = freeze(['feBlend', 'feColorMatrix', 'feComponentTransfer', 'feComposite', 'feConvolveMatrix', 'feDiffuseLighting', 'feDisplacementMap', 'feDistantLight', 'feDropShadow', 'feFlood', 'feFuncA', 'feFuncB', 'feFuncG', 'feFuncR', 'feGaussianBlur', 'feImage', 'feMerge', 'feMergeNode', 'feMorphology', 'feOffset', 'fePointLight', 'feSpecularLighting', 'feSpotLight', 'feTile', 'feTurbulence']); + // List of SVG elements that are disallowed by default. + // We still need to know them so that we can do namespace + // checks properly in case one wants to add them to + // allow-list. + const svgDisallowed = freeze(['animate', 'color-profile', 'cursor', 'discard', 'font-face', 'font-face-format', 'font-face-name', 'font-face-src', 'font-face-uri', 'foreignobject', 'hatch', 'hatchpath', 'mesh', 'meshgradient', 'meshpatch', 'meshrow', 'missing-glyph', 'script', 'set', 'solidcolor', 'unknown', 'use']); + const mathMl$1 = freeze(['math', 'menclose', 'merror', 'mfenced', 'mfrac', 'mglyph', 'mi', 'mlabeledtr', 'mmultiscripts', 'mn', 'mo', 'mover', 'mpadded', 'mphantom', 'mroot', 'mrow', 'ms', 'mspace', 'msqrt', 'mstyle', 'msub', 'msup', 'msubsup', 'mtable', 'mtd', 'mtext', 'mtr', 'munder', 'munderover', 'mprescripts']); + // Similarly to SVG, we want to know all MathML elements, + // even those that we disallow by default. + const mathMlDisallowed = freeze(['maction', 'maligngroup', 'malignmark', 'mlongdiv', 'mscarries', 'mscarry', 'msgroup', 'mstack', 'msline', 'msrow', 'semantics', 'annotation', 'annotation-xml', 'mprescripts', 'none']); + const text = freeze(['#text']); + + const html = freeze(['accept', 'action', 'align', 'alt', 'autocapitalize', 'autocomplete', 'autopictureinpicture', 'autoplay', 'background', 'bgcolor', 'border', 'capture', 'cellpadding', 'cellspacing', 'checked', 'cite', 'class', 'clear', 'color', 'cols', 'colspan', 'controls', 'controlslist', 'coords', 'crossorigin', 'datetime', 'decoding', 'default', 'dir', 'disabled', 'disablepictureinpicture', 'disableremoteplayback', 'download', 'draggable', 'enctype', 'enterkeyhint', 'face', 'for', 'headers', 'height', 'hidden', 'high', 'href', 'hreflang', 'id', 'inputmode', 'integrity', 'ismap', 'kind', 'label', 'lang', 'list', 'loading', 'loop', 'low', 'max', 'maxlength', 'media', 'method', 'min', 'minlength', 'multiple', 'muted', 'name', 'nonce', 'noshade', 'novalidate', 'nowrap', 'open', 'optimum', 'pattern', 'placeholder', 'playsinline', 'popover', 'popovertarget', 'popovertargetaction', 'poster', 'preload', 'pubdate', 'radiogroup', 'readonly', 'rel', 'required', 'rev', 'reversed', 'role', 'rows', 'rowspan', 'spellcheck', 'scope', 'selected', 'shape', 'size', 'sizes', 'span', 'srclang', 'start', 'src', 'srcset', 'step', 'style', 'summary', 'tabindex', 'title', 'translate', 'type', 'usemap', 'valign', 'value', 'width', 'wrap', 'xmlns', 'slot']); + const svg = freeze(['accent-height', 'accumulate', 'additive', 'alignment-baseline', 'amplitude', 'ascent', 'attributename', 'attributetype', 'azimuth', 'basefrequency', 'baseline-shift', 'begin', 'bias', 'by', 'class', 'clip', 'clippathunits', 'clip-path', 'clip-rule', 'color', 'color-interpolation', 'color-interpolation-filters', 'color-profile', 'color-rendering', 'cx', 'cy', 'd', 'dx', 'dy', 'diffuseconstant', 'direction', 'display', 'divisor', 'dur', 'edgemode', 'elevation', 'end', 'exponent', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'filterunits', 'flood-color', 'flood-opacity', 'font-family', 'font-size', 'font-size-adjust', 'font-stretch', 'font-style', 'font-variant', 'font-weight', 'fx', 'fy', 'g1', 'g2', 'glyph-name', 'glyphref', 'gradientunits', 'gradienttransform', 'height', 'href', 'id', 'image-rendering', 'in', 'in2', 'intercept', 'k', 'k1', 'k2', 'k3', 'k4', 'kerning', 'keypoints', 'keysplines', 'keytimes', 'lang', 'lengthadjust', 'letter-spacing', 'kernelmatrix', 'kernelunitlength', 'lighting-color', 'local', 'marker-end', 'marker-mid', 'marker-start', 'markerheight', 'markerunits', 'markerwidth', 'maskcontentunits', 'maskunits', 'max', 'mask', 'media', 'method', 'mode', 'min', 'name', 'numoctaves', 'offset', 'operator', 'opacity', 'order', 'orient', 'orientation', 'origin', 'overflow', 'paint-order', 'path', 'pathlength', 'patterncontentunits', 'patterntransform', 'patternunits', 'points', 'preservealpha', 'preserveaspectratio', 'primitiveunits', 'r', 'rx', 'ry', 'radius', 'refx', 'refy', 'repeatcount', 'repeatdur', 'restart', 'result', 'rotate', 'scale', 'seed', 'shape-rendering', 'slope', 'specularconstant', 'specularexponent', 'spreadmethod', 'startoffset', 'stddeviation', 'stitchtiles', 'stop-color', 'stop-opacity', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke', 'stroke-width', 'style', 'surfacescale', 'systemlanguage', 'tabindex', 'tablevalues', 'targetx', 'targety', 'transform', 'transform-origin', 'text-anchor', 'text-decoration', 'text-rendering', 'textlength', 'type', 'u1', 'u2', 'unicode', 'values', 'viewbox', 'visibility', 'version', 'vert-adv-y', 'vert-origin-x', 'vert-origin-y', 'width', 'word-spacing', 'wrap', 'writing-mode', 'xchannelselector', 'ychannelselector', 'x', 'x1', 'x2', 'xmlns', 'y', 'y1', 'y2', 'z', 'zoomandpan']); + const mathMl = freeze(['accent', 'accentunder', 'align', 'bevelled', 'close', 'columnsalign', 'columnlines', 'columnspan', 'denomalign', 'depth', 'dir', 'display', 'displaystyle', 'encoding', 'fence', 'frame', 'height', 'href', 'id', 'largeop', 'length', 'linethickness', 'lspace', 'lquote', 'mathbackground', 'mathcolor', 'mathsize', 'mathvariant', 'maxsize', 'minsize', 'movablelimits', 'notation', 'numalign', 'open', 'rowalign', 'rowlines', 'rowspacing', 'rowspan', 'rspace', 'rquote', 'scriptlevel', 'scriptminsize', 'scriptsizemultiplier', 'selection', 'separator', 'separators', 'stretchy', 'subscriptshift', 'supscriptshift', 'symmetric', 'voffset', 'width', 'xmlns']); + const xml = freeze(['xlink:href', 'xml:id', 'xlink:title', 'xml:space', 'xmlns:xlink']); + + // eslint-disable-next-line unicorn/better-regex + const MUSTACHE_EXPR = seal(/\{\{[\w\W]*|[\w\W]*\}\}/gm); // Specify template detection regex for SAFE_FOR_TEMPLATES mode + const ERB_EXPR = seal(/<%[\w\W]*|[\w\W]*%>/gm); + const TMPLIT_EXPR = seal(/\${[\w\W]*}/gm); + const DATA_ATTR = seal(/^data-[\-\w.\u00B7-\uFFFF]/); // eslint-disable-line no-useless-escape + const ARIA_ATTR = seal(/^aria-[\-\w]+$/); // eslint-disable-line no-useless-escape + const IS_ALLOWED_URI = seal(/^(?:(?:(?:f|ht)tps?|mailto|tel|callto|sms|cid|xmpp):|[^a-z]|[a-z+.\-]+(?:[^a-z+.\-:]|$))/i // eslint-disable-line no-useless-escape + ); + const IS_SCRIPT_OR_DATA = seal(/^(?:\w+script|data):/i); + const ATTR_WHITESPACE = seal(/[\u0000-\u0020\u00A0\u1680\u180E\u2000-\u2029\u205F\u3000]/g // eslint-disable-line no-control-regex + ); + const DOCTYPE_NAME = seal(/^html$/i); + const CUSTOM_ELEMENT = seal(/^[a-z][.\w]*(-[.\w]+)+$/i); + + var EXPRESSIONS = /*#__PURE__*/Object.freeze({ + __proto__: null, + ARIA_ATTR: ARIA_ATTR, + ATTR_WHITESPACE: ATTR_WHITESPACE, + CUSTOM_ELEMENT: CUSTOM_ELEMENT, + DATA_ATTR: DATA_ATTR, + DOCTYPE_NAME: DOCTYPE_NAME, + ERB_EXPR: ERB_EXPR, + IS_ALLOWED_URI: IS_ALLOWED_URI, + IS_SCRIPT_OR_DATA: IS_SCRIPT_OR_DATA, + MUSTACHE_EXPR: MUSTACHE_EXPR, + TMPLIT_EXPR: TMPLIT_EXPR + }); + + /* eslint-disable @typescript-eslint/indent */ + // https://developer.mozilla.org/en-US/docs/Web/API/Node/nodeType + const NODE_TYPE = { + element: 1, + attribute: 2, + text: 3, + cdataSection: 4, + entityReference: 5, + // Deprecated + entityNode: 6, + // Deprecated + progressingInstruction: 7, + comment: 8, + document: 9, + documentType: 10, + documentFragment: 11, + notation: 12 // Deprecated + }; + const getGlobal = function getGlobal() { + return typeof window === 'undefined' ? null : window; + }; + /** + * Creates a no-op policy for internal use only. + * Don't export this function outside this module! + * @param trustedTypes The policy factory. + * @param purifyHostElement The Script element used to load DOMPurify (to determine policy name suffix). + * @return The policy created (or null, if Trusted Types + * are not supported or creating the policy failed). + */ + const _createTrustedTypesPolicy = function _createTrustedTypesPolicy(trustedTypes, purifyHostElement) { + if (typeof trustedTypes !== 'object' || typeof trustedTypes.createPolicy !== 'function') { + return null; + } + // Allow the callers to control the unique policy name + // by adding a data-tt-policy-suffix to the script element with the DOMPurify. + // Policy creation with duplicate names throws in Trusted Types. + let suffix = null; + const ATTR_NAME = 'data-tt-policy-suffix'; + if (purifyHostElement && purifyHostElement.hasAttribute(ATTR_NAME)) { + suffix = purifyHostElement.getAttribute(ATTR_NAME); + } + const policyName = 'dompurify' + (suffix ? '#' + suffix : ''); + try { + return trustedTypes.createPolicy(policyName, { + createHTML(html) { + return html; + }, + createScriptURL(scriptUrl) { + return scriptUrl; + } + }); + } catch (_) { + // Policy creation failed (most likely another DOMPurify script has + // already run). Skip creating the policy, as this will only cause errors + // if TT are enforced. + console.warn('TrustedTypes policy ' + policyName + ' could not be created.'); + return null; + } + }; + function createDOMPurify() { + let window = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : getGlobal(); + const DOMPurify = root => createDOMPurify(root); + DOMPurify.version = '3.2.0'; + DOMPurify.removed = []; + if (!window || !window.document || window.document.nodeType !== NODE_TYPE.document) { + // Not running in a browser, provide a factory function + // so that you can pass your own Window + DOMPurify.isSupported = false; + return DOMPurify; + } + let { + document + } = window; + const originalDocument = document; + const currentScript = originalDocument.currentScript; + const { + DocumentFragment, + HTMLTemplateElement, + Node, + Element, + NodeFilter, + NamedNodeMap = window.NamedNodeMap || window.MozNamedAttrMap, + HTMLFormElement, + DOMParser, + trustedTypes + } = window; + const ElementPrototype = Element.prototype; + const cloneNode = lookupGetter(ElementPrototype, 'cloneNode'); + const remove = lookupGetter(ElementPrototype, 'remove'); + const getNextSibling = lookupGetter(ElementPrototype, 'nextSibling'); + const getChildNodes = lookupGetter(ElementPrototype, 'childNodes'); + const getParentNode = lookupGetter(ElementPrototype, 'parentNode'); + // As per issue #47, the web-components registry is inherited by a + // new document created via createHTMLDocument. As per the spec + // (http://w3c.github.io/webcomponents/spec/custom/#creating-and-passing-registries) + // a new empty registry is used when creating a template contents owner + // document, so we use that as our parent document to ensure nothing + // is inherited. + if (typeof HTMLTemplateElement === 'function') { + const template = document.createElement('template'); + if (template.content && template.content.ownerDocument) { + document = template.content.ownerDocument; + } + } + let trustedTypesPolicy; + let emptyHTML = ''; + const { + implementation, + createNodeIterator, + createDocumentFragment, + getElementsByTagName + } = document; + const { + importNode + } = originalDocument; + let hooks = {}; + /** + * Expose whether this browser supports running the full DOMPurify. + */ + DOMPurify.isSupported = typeof entries === 'function' && typeof getParentNode === 'function' && implementation && implementation.createHTMLDocument !== undefined; + const { + MUSTACHE_EXPR, + ERB_EXPR, + TMPLIT_EXPR, + DATA_ATTR, + ARIA_ATTR, + IS_SCRIPT_OR_DATA, + ATTR_WHITESPACE, + CUSTOM_ELEMENT + } = EXPRESSIONS; + let { + IS_ALLOWED_URI: IS_ALLOWED_URI$1 + } = EXPRESSIONS; + /** + * We consider the elements and attributes below to be safe. Ideally + * don't add any new ones but feel free to remove unwanted ones. + */ + /* allowed element names */ + let ALLOWED_TAGS = null; + const DEFAULT_ALLOWED_TAGS = addToSet({}, [...html$1, ...svg$1, ...svgFilters, ...mathMl$1, ...text]); + /* Allowed attribute names */ + let ALLOWED_ATTR = null; + const DEFAULT_ALLOWED_ATTR = addToSet({}, [...html, ...svg, ...mathMl, ...xml]); + /* + * Configure how DOMPurify should handle custom elements and their attributes as well as customized built-in elements. + * @property {RegExp|Function|null} tagNameCheck one of [null, regexPattern, predicate]. Default: `null` (disallow any custom elements) + * @property {RegExp|Function|null} attributeNameCheck one of [null, regexPattern, predicate]. Default: `null` (disallow any attributes not on the allow list) + * @property {boolean} allowCustomizedBuiltInElements allow custom elements derived from built-ins if they pass CUSTOM_ELEMENT_HANDLING.tagNameCheck. Default: `false`. + */ + let CUSTOM_ELEMENT_HANDLING = Object.seal(create(null, { + tagNameCheck: { + writable: true, + configurable: false, + enumerable: true, + value: null + }, + attributeNameCheck: { + writable: true, + configurable: false, + enumerable: true, + value: null + }, + allowCustomizedBuiltInElements: { + writable: true, + configurable: false, + enumerable: true, + value: false + } + })); + /* Explicitly forbidden tags (overrides ALLOWED_TAGS/ADD_TAGS) */ + let FORBID_TAGS = null; + /* Explicitly forbidden attributes (overrides ALLOWED_ATTR/ADD_ATTR) */ + let FORBID_ATTR = null; + /* Decide if ARIA attributes are okay */ + let ALLOW_ARIA_ATTR = true; + /* Decide if custom data attributes are okay */ + let ALLOW_DATA_ATTR = true; + /* Decide if unknown protocols are okay */ + let ALLOW_UNKNOWN_PROTOCOLS = false; + /* Decide if self-closing tags in attributes are allowed. + * Usually removed due to a mXSS issue in jQuery 3.0 */ + let ALLOW_SELF_CLOSE_IN_ATTR = true; + /* Output should be safe for common template engines. + * This means, DOMPurify removes data attributes, mustaches and ERB + */ + let SAFE_FOR_TEMPLATES = false; + /* Output should be safe even for XML used within HTML and alike. + * This means, DOMPurify removes comments when containing risky content. + */ + let SAFE_FOR_XML = true; + /* Decide if document with ... should be returned */ + let WHOLE_DOCUMENT = false; + /* Track whether config is already set on this instance of DOMPurify. */ + let SET_CONFIG = false; + /* Decide if all elements (e.g. style, script) must be children of + * document.body. By default, browsers might move them to document.head */ + let FORCE_BODY = false; + /* Decide if a DOM `HTMLBodyElement` should be returned, instead of a html + * string (or a TrustedHTML object if Trusted Types are supported). + * If `WHOLE_DOCUMENT` is enabled a `HTMLHtmlElement` will be returned instead + */ + let RETURN_DOM = false; + /* Decide if a DOM `DocumentFragment` should be returned, instead of a html + * string (or a TrustedHTML object if Trusted Types are supported) */ + let RETURN_DOM_FRAGMENT = false; + /* Try to return a Trusted Type object instead of a string, return a string in + * case Trusted Types are not supported */ + let RETURN_TRUSTED_TYPE = false; + /* Output should be free from DOM clobbering attacks? + * This sanitizes markups named with colliding, clobberable built-in DOM APIs. + */ + let SANITIZE_DOM = true; + /* Achieve full DOM Clobbering protection by isolating the namespace of named + * properties and JS variables, mitigating attacks that abuse the HTML/DOM spec rules. + * + * HTML/DOM spec rules that enable DOM Clobbering: + * - Named Access on Window (§7.3.3) + * - DOM Tree Accessors (§3.1.5) + * - Form Element Parent-Child Relations (§4.10.3) + * - Iframe srcdoc / Nested WindowProxies (§4.8.5) + * - HTMLCollection (§4.2.10.2) + * + * Namespace isolation is implemented by prefixing `id` and `name` attributes + * with a constant string, i.e., `user-content-` + */ + let SANITIZE_NAMED_PROPS = false; + const SANITIZE_NAMED_PROPS_PREFIX = 'user-content-'; + /* Keep element content when removing element? */ + let KEEP_CONTENT = true; + /* If a `Node` is passed to sanitize(), then performs sanitization in-place instead + * of importing it into a new Document and returning a sanitized copy */ + let IN_PLACE = false; + /* Allow usage of profiles like html, svg and mathMl */ + let USE_PROFILES = {}; + /* Tags to ignore content of when KEEP_CONTENT is true */ + let FORBID_CONTENTS = null; + const DEFAULT_FORBID_CONTENTS = addToSet({}, ['annotation-xml', 'audio', 'colgroup', 'desc', 'foreignobject', 'head', 'iframe', 'math', 'mi', 'mn', 'mo', 'ms', 'mtext', 'noembed', 'noframes', 'noscript', 'plaintext', 'script', 'style', 'svg', 'template', 'thead', 'title', 'video', 'xmp']); + /* Tags that are safe for data: URIs */ + let DATA_URI_TAGS = null; + const DEFAULT_DATA_URI_TAGS = addToSet({}, ['audio', 'video', 'img', 'source', 'image', 'track']); + /* Attributes safe for values like "javascript:" */ + let URI_SAFE_ATTRIBUTES = null; + const DEFAULT_URI_SAFE_ATTRIBUTES = addToSet({}, ['alt', 'class', 'for', 'id', 'label', 'name', 'pattern', 'placeholder', 'role', 'summary', 'title', 'value', 'style', 'xmlns']); + const MATHML_NAMESPACE = 'http://www.w3.org/1998/Math/MathML'; + const SVG_NAMESPACE = 'http://www.w3.org/2000/svg'; + const HTML_NAMESPACE = 'http://www.w3.org/1999/xhtml'; + /* Document namespace */ + let NAMESPACE = HTML_NAMESPACE; + let IS_EMPTY_INPUT = false; + /* Allowed XHTML+XML namespaces */ + let ALLOWED_NAMESPACES = null; + const DEFAULT_ALLOWED_NAMESPACES = addToSet({}, [MATHML_NAMESPACE, SVG_NAMESPACE, HTML_NAMESPACE], stringToString); + let MATHML_TEXT_INTEGRATION_POINTS = addToSet({}, ['mi', 'mo', 'mn', 'ms', 'mtext']); + let HTML_INTEGRATION_POINTS = addToSet({}, ['annotation-xml']); + // Certain elements are allowed in both SVG and HTML + // namespace. We need to specify them explicitly + // so that they don't get erroneously deleted from + // HTML namespace. + const COMMON_SVG_AND_HTML_ELEMENTS = addToSet({}, ['title', 'style', 'font', 'a', 'script']); + /* Parsing of strict XHTML documents */ + let PARSER_MEDIA_TYPE = null; + const SUPPORTED_PARSER_MEDIA_TYPES = ['application/xhtml+xml', 'text/html']; + const DEFAULT_PARSER_MEDIA_TYPE = 'text/html'; + let transformCaseFunc = null; + /* Keep a reference to config to pass to hooks */ + let CONFIG = null; + /* Ideally, do not touch anything below this line */ + /* ______________________________________________ */ + const formElement = document.createElement('form'); + const isRegexOrFunction = function isRegexOrFunction(testValue) { + return testValue instanceof RegExp || testValue instanceof Function; + }; + /** + * _parseConfig + * + * @param cfg optional config literal + */ + // eslint-disable-next-line complexity + const _parseConfig = function _parseConfig() { + let cfg = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {}; + if (CONFIG && CONFIG === cfg) { + return; + } + /* Shield configuration object from tampering */ + if (!cfg || typeof cfg !== 'object') { + cfg = {}; + } + /* Shield configuration object from prototype pollution */ + cfg = clone(cfg); + PARSER_MEDIA_TYPE = + // eslint-disable-next-line unicorn/prefer-includes + SUPPORTED_PARSER_MEDIA_TYPES.indexOf(cfg.PARSER_MEDIA_TYPE) === -1 ? DEFAULT_PARSER_MEDIA_TYPE : cfg.PARSER_MEDIA_TYPE; + // HTML tags and attributes are not case-sensitive, converting to lowercase. Keeping XHTML as is. + transformCaseFunc = PARSER_MEDIA_TYPE === 'application/xhtml+xml' ? stringToString : stringToLowerCase; + /* Set configuration parameters */ + ALLOWED_TAGS = objectHasOwnProperty(cfg, 'ALLOWED_TAGS') ? addToSet({}, cfg.ALLOWED_TAGS, transformCaseFunc) : DEFAULT_ALLOWED_TAGS; + ALLOWED_ATTR = objectHasOwnProperty(cfg, 'ALLOWED_ATTR') ? addToSet({}, cfg.ALLOWED_ATTR, transformCaseFunc) : DEFAULT_ALLOWED_ATTR; + ALLOWED_NAMESPACES = objectHasOwnProperty(cfg, 'ALLOWED_NAMESPACES') ? addToSet({}, cfg.ALLOWED_NAMESPACES, stringToString) : DEFAULT_ALLOWED_NAMESPACES; + URI_SAFE_ATTRIBUTES = objectHasOwnProperty(cfg, 'ADD_URI_SAFE_ATTR') ? addToSet(clone(DEFAULT_URI_SAFE_ATTRIBUTES), cfg.ADD_URI_SAFE_ATTR, transformCaseFunc) : DEFAULT_URI_SAFE_ATTRIBUTES; + DATA_URI_TAGS = objectHasOwnProperty(cfg, 'ADD_DATA_URI_TAGS') ? addToSet(clone(DEFAULT_DATA_URI_TAGS), cfg.ADD_DATA_URI_TAGS, transformCaseFunc) : DEFAULT_DATA_URI_TAGS; + FORBID_CONTENTS = objectHasOwnProperty(cfg, 'FORBID_CONTENTS') ? addToSet({}, cfg.FORBID_CONTENTS, transformCaseFunc) : DEFAULT_FORBID_CONTENTS; + FORBID_TAGS = objectHasOwnProperty(cfg, 'FORBID_TAGS') ? addToSet({}, cfg.FORBID_TAGS, transformCaseFunc) : {}; + FORBID_ATTR = objectHasOwnProperty(cfg, 'FORBID_ATTR') ? addToSet({}, cfg.FORBID_ATTR, transformCaseFunc) : {}; + USE_PROFILES = objectHasOwnProperty(cfg, 'USE_PROFILES') ? cfg.USE_PROFILES : false; + ALLOW_ARIA_ATTR = cfg.ALLOW_ARIA_ATTR !== false; // Default true + ALLOW_DATA_ATTR = cfg.ALLOW_DATA_ATTR !== false; // Default true + ALLOW_UNKNOWN_PROTOCOLS = cfg.ALLOW_UNKNOWN_PROTOCOLS || false; // Default false + ALLOW_SELF_CLOSE_IN_ATTR = cfg.ALLOW_SELF_CLOSE_IN_ATTR !== false; // Default true + SAFE_FOR_TEMPLATES = cfg.SAFE_FOR_TEMPLATES || false; // Default false + SAFE_FOR_XML = cfg.SAFE_FOR_XML !== false; // Default true + WHOLE_DOCUMENT = cfg.WHOLE_DOCUMENT || false; // Default false + RETURN_DOM = cfg.RETURN_DOM || false; // Default false + RETURN_DOM_FRAGMENT = cfg.RETURN_DOM_FRAGMENT || false; // Default false + RETURN_TRUSTED_TYPE = cfg.RETURN_TRUSTED_TYPE || false; // Default false + FORCE_BODY = cfg.FORCE_BODY || false; // Default false + SANITIZE_DOM = cfg.SANITIZE_DOM !== false; // Default true + SANITIZE_NAMED_PROPS = cfg.SANITIZE_NAMED_PROPS || false; // Default false + KEEP_CONTENT = cfg.KEEP_CONTENT !== false; // Default true + IN_PLACE = cfg.IN_PLACE || false; // Default false + IS_ALLOWED_URI$1 = cfg.ALLOWED_URI_REGEXP || IS_ALLOWED_URI; + NAMESPACE = cfg.NAMESPACE || HTML_NAMESPACE; + MATHML_TEXT_INTEGRATION_POINTS = cfg.MATHML_TEXT_INTEGRATION_POINTS || MATHML_TEXT_INTEGRATION_POINTS; + HTML_INTEGRATION_POINTS = cfg.HTML_INTEGRATION_POINTS || HTML_INTEGRATION_POINTS; + CUSTOM_ELEMENT_HANDLING = cfg.CUSTOM_ELEMENT_HANDLING || {}; + if (cfg.CUSTOM_ELEMENT_HANDLING && isRegexOrFunction(cfg.CUSTOM_ELEMENT_HANDLING.tagNameCheck)) { + CUSTOM_ELEMENT_HANDLING.tagNameCheck = cfg.CUSTOM_ELEMENT_HANDLING.tagNameCheck; + } + if (cfg.CUSTOM_ELEMENT_HANDLING && isRegexOrFunction(cfg.CUSTOM_ELEMENT_HANDLING.attributeNameCheck)) { + CUSTOM_ELEMENT_HANDLING.attributeNameCheck = cfg.CUSTOM_ELEMENT_HANDLING.attributeNameCheck; + } + if (cfg.CUSTOM_ELEMENT_HANDLING && typeof cfg.CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements === 'boolean') { + CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements = cfg.CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements; + } + if (SAFE_FOR_TEMPLATES) { + ALLOW_DATA_ATTR = false; + } + if (RETURN_DOM_FRAGMENT) { + RETURN_DOM = true; + } + /* Parse profile info */ + if (USE_PROFILES) { + ALLOWED_TAGS = addToSet({}, text); + ALLOWED_ATTR = []; + if (USE_PROFILES.html === true) { + addToSet(ALLOWED_TAGS, html$1); + addToSet(ALLOWED_ATTR, html); + } + if (USE_PROFILES.svg === true) { + addToSet(ALLOWED_TAGS, svg$1); + addToSet(ALLOWED_ATTR, svg); + addToSet(ALLOWED_ATTR, xml); + } + if (USE_PROFILES.svgFilters === true) { + addToSet(ALLOWED_TAGS, svgFilters); + addToSet(ALLOWED_ATTR, svg); + addToSet(ALLOWED_ATTR, xml); + } + if (USE_PROFILES.mathMl === true) { + addToSet(ALLOWED_TAGS, mathMl$1); + addToSet(ALLOWED_ATTR, mathMl); + addToSet(ALLOWED_ATTR, xml); + } + } + /* Merge configuration parameters */ + if (cfg.ADD_TAGS) { + if (ALLOWED_TAGS === DEFAULT_ALLOWED_TAGS) { + ALLOWED_TAGS = clone(ALLOWED_TAGS); + } + addToSet(ALLOWED_TAGS, cfg.ADD_TAGS, transformCaseFunc); + } + if (cfg.ADD_ATTR) { + if (ALLOWED_ATTR === DEFAULT_ALLOWED_ATTR) { + ALLOWED_ATTR = clone(ALLOWED_ATTR); + } + addToSet(ALLOWED_ATTR, cfg.ADD_ATTR, transformCaseFunc); + } + if (cfg.ADD_URI_SAFE_ATTR) { + addToSet(URI_SAFE_ATTRIBUTES, cfg.ADD_URI_SAFE_ATTR, transformCaseFunc); + } + if (cfg.FORBID_CONTENTS) { + if (FORBID_CONTENTS === DEFAULT_FORBID_CONTENTS) { + FORBID_CONTENTS = clone(FORBID_CONTENTS); + } + addToSet(FORBID_CONTENTS, cfg.FORBID_CONTENTS, transformCaseFunc); + } + /* Add #text in case KEEP_CONTENT is set to true */ + if (KEEP_CONTENT) { + ALLOWED_TAGS['#text'] = true; + } + /* Add html, head and body to ALLOWED_TAGS in case WHOLE_DOCUMENT is true */ + if (WHOLE_DOCUMENT) { + addToSet(ALLOWED_TAGS, ['html', 'head', 'body']); + } + /* Add tbody to ALLOWED_TAGS in case tables are permitted, see #286, #365 */ + if (ALLOWED_TAGS.table) { + addToSet(ALLOWED_TAGS, ['tbody']); + delete FORBID_TAGS.tbody; + } + if (cfg.TRUSTED_TYPES_POLICY) { + if (typeof cfg.TRUSTED_TYPES_POLICY.createHTML !== 'function') { + throw typeErrorCreate('TRUSTED_TYPES_POLICY configuration option must provide a "createHTML" hook.'); + } + if (typeof cfg.TRUSTED_TYPES_POLICY.createScriptURL !== 'function') { + throw typeErrorCreate('TRUSTED_TYPES_POLICY configuration option must provide a "createScriptURL" hook.'); + } + // Overwrite existing TrustedTypes policy. + trustedTypesPolicy = cfg.TRUSTED_TYPES_POLICY; + // Sign local variables required by `sanitize`. + emptyHTML = trustedTypesPolicy.createHTML(''); + } else { + // Uninitialized policy, attempt to initialize the internal dompurify policy. + if (trustedTypesPolicy === undefined) { + trustedTypesPolicy = _createTrustedTypesPolicy(trustedTypes, currentScript); + } + // If creating the internal policy succeeded sign internal variables. + if (trustedTypesPolicy !== null && typeof emptyHTML === 'string') { + emptyHTML = trustedTypesPolicy.createHTML(''); + } + } + // Prevent further manipulation of configuration. + // Not available in IE8, Safari 5, etc. + if (freeze) { + freeze(cfg); + } + CONFIG = cfg; + }; + /* Keep track of all possible SVG and MathML tags + * so that we can perform the namespace checks + * correctly. */ + const ALL_SVG_TAGS = addToSet({}, [...svg$1, ...svgFilters, ...svgDisallowed]); + const ALL_MATHML_TAGS = addToSet({}, [...mathMl$1, ...mathMlDisallowed]); + /** + * @param element a DOM element whose namespace is being checked + * @returns Return false if the element has a + * namespace that a spec-compliant parser would never + * return. Return true otherwise. + */ + const _checkValidNamespace = function _checkValidNamespace(element) { + let parent = getParentNode(element); + // In JSDOM, if we're inside shadow DOM, then parentNode + // can be null. We just simulate parent in this case. + if (!parent || !parent.tagName) { + parent = { + namespaceURI: NAMESPACE, + tagName: 'template' + }; + } + const tagName = stringToLowerCase(element.tagName); + const parentTagName = stringToLowerCase(parent.tagName); + if (!ALLOWED_NAMESPACES[element.namespaceURI]) { + return false; + } + if (element.namespaceURI === SVG_NAMESPACE) { + // The only way to switch from HTML namespace to SVG + // is via . If it happens via any other tag, then + // it should be killed. + if (parent.namespaceURI === HTML_NAMESPACE) { + return tagName === 'svg'; + } + // The only way to switch from MathML to SVG is via` + // svg if parent is either or MathML + // text integration points. + if (parent.namespaceURI === MATHML_NAMESPACE) { + return tagName === 'svg' && (parentTagName === 'annotation-xml' || MATHML_TEXT_INTEGRATION_POINTS[parentTagName]); + } + // We only allow elements that are defined in SVG + // spec. All others are disallowed in SVG namespace. + return Boolean(ALL_SVG_TAGS[tagName]); + } + if (element.namespaceURI === MATHML_NAMESPACE) { + // The only way to switch from HTML namespace to MathML + // is via . If it happens via any other tag, then + // it should be killed. + if (parent.namespaceURI === HTML_NAMESPACE) { + return tagName === 'math'; + } + // The only way to switch from SVG to MathML is via + // and HTML integration points + if (parent.namespaceURI === SVG_NAMESPACE) { + return tagName === 'math' && HTML_INTEGRATION_POINTS[parentTagName]; + } + // We only allow elements that are defined in MathML + // spec. All others are disallowed in MathML namespace. + return Boolean(ALL_MATHML_TAGS[tagName]); + } + if (element.namespaceURI === HTML_NAMESPACE) { + // The only way to switch from SVG to HTML is via + // HTML integration points, and from MathML to HTML + // is via MathML text integration points + if (parent.namespaceURI === SVG_NAMESPACE && !HTML_INTEGRATION_POINTS[parentTagName]) { + return false; + } + if (parent.namespaceURI === MATHML_NAMESPACE && !MATHML_TEXT_INTEGRATION_POINTS[parentTagName]) { + return false; + } + // We disallow tags that are specific for MathML + // or SVG and should never appear in HTML namespace + return !ALL_MATHML_TAGS[tagName] && (COMMON_SVG_AND_HTML_ELEMENTS[tagName] || !ALL_SVG_TAGS[tagName]); + } + // For XHTML and XML documents that support custom namespaces + if (PARSER_MEDIA_TYPE === 'application/xhtml+xml' && ALLOWED_NAMESPACES[element.namespaceURI]) { + return true; + } + // The code should never reach this place (this means + // that the element somehow got namespace that is not + // HTML, SVG, MathML or allowed via ALLOWED_NAMESPACES). + // Return false just in case. + return false; + }; + /** + * _forceRemove + * + * @param node a DOM node + */ + const _forceRemove = function _forceRemove(node) { + arrayPush(DOMPurify.removed, { + element: node + }); + try { + // eslint-disable-next-line unicorn/prefer-dom-node-remove + getParentNode(node).removeChild(node); + } catch (_) { + remove(node); + } + }; + /** + * _removeAttribute + * + * @param name an Attribute name + * @param element a DOM node + */ + const _removeAttribute = function _removeAttribute(name, element) { + try { + arrayPush(DOMPurify.removed, { + attribute: element.getAttributeNode(name), + from: element + }); + } catch (_) { + arrayPush(DOMPurify.removed, { + attribute: null, + from: element + }); + } + element.removeAttribute(name); + // We void attribute values for unremovable "is"" attributes + if (name === 'is' && !ALLOWED_ATTR[name]) { + if (RETURN_DOM || RETURN_DOM_FRAGMENT) { + try { + _forceRemove(element); + } catch (_) {} + } else { + try { + element.setAttribute(name, ''); + } catch (_) {} + } + } + }; + /** + * _initDocument + * + * @param dirty - a string of dirty markup + * @return a DOM, filled with the dirty markup + */ + const _initDocument = function _initDocument(dirty) { + /* Create a HTML document */ + let doc = null; + let leadingWhitespace = null; + if (FORCE_BODY) { + dirty = '' + dirty; + } else { + /* If FORCE_BODY isn't used, leading whitespace needs to be preserved manually */ + const matches = stringMatch(dirty, /^[\r\n\t ]+/); + leadingWhitespace = matches && matches[0]; + } + if (PARSER_MEDIA_TYPE === 'application/xhtml+xml' && NAMESPACE === HTML_NAMESPACE) { + // Root of XHTML doc must contain xmlns declaration (see https://www.w3.org/TR/xhtml1/normative.html#strict) + dirty = ' ' + dirty + ''; + } + const dirtyPayload = trustedTypesPolicy ? trustedTypesPolicy.createHTML(dirty) : dirty; + /* + * Use the DOMParser API by default, fallback later if needs be + * DOMParser not work for svg when has multiple root element. + */ + if (NAMESPACE === HTML_NAMESPACE) { + try { + doc = new DOMParser().parseFromString(dirtyPayload, PARSER_MEDIA_TYPE); + } catch (_) {} + } + /* Use createHTMLDocument in case DOMParser is not available */ + if (!doc || !doc.documentElement) { + doc = implementation.createDocument(NAMESPACE, 'template', null); + try { + doc.documentElement.innerHTML = IS_EMPTY_INPUT ? emptyHTML : dirtyPayload; + } catch (_) { + // Syntax error if dirtyPayload is invalid xml + } + } + const body = doc.body || doc.documentElement; + if (dirty && leadingWhitespace) { + body.insertBefore(document.createTextNode(leadingWhitespace), body.childNodes[0] || null); + } + /* Work on whole document or just its body */ + if (NAMESPACE === HTML_NAMESPACE) { + return getElementsByTagName.call(doc, WHOLE_DOCUMENT ? 'html' : 'body')[0]; + } + return WHOLE_DOCUMENT ? doc.documentElement : body; + }; + /** + * Creates a NodeIterator object that you can use to traverse filtered lists of nodes or elements in a document. + * + * @param root The root element or node to start traversing on. + * @return The created NodeIterator + */ + const _createNodeIterator = function _createNodeIterator(root) { + return createNodeIterator.call(root.ownerDocument || root, root, + // eslint-disable-next-line no-bitwise + NodeFilter.SHOW_ELEMENT | NodeFilter.SHOW_COMMENT | NodeFilter.SHOW_TEXT | NodeFilter.SHOW_PROCESSING_INSTRUCTION | NodeFilter.SHOW_CDATA_SECTION, null); + }; + /** + * _isClobbered + * + * @param element element to check for clobbering attacks + * @return true if clobbered, false if safe + */ + const _isClobbered = function _isClobbered(element) { + return element instanceof HTMLFormElement && (typeof element.nodeName !== 'string' || typeof element.textContent !== 'string' || typeof element.removeChild !== 'function' || !(element.attributes instanceof NamedNodeMap) || typeof element.removeAttribute !== 'function' || typeof element.setAttribute !== 'function' || typeof element.namespaceURI !== 'string' || typeof element.insertBefore !== 'function' || typeof element.hasChildNodes !== 'function'); + }; + /** + * Checks whether the given object is a DOM node. + * + * @param value object to check whether it's a DOM node + * @return true is object is a DOM node + */ + const _isNode = function _isNode(value) { + return typeof Node === 'function' && value instanceof Node; + }; + function _executeHook(entryPoint, currentNode, data) { + if (!hooks[entryPoint]) { + return; + } + arrayForEach(hooks[entryPoint], hook => { + hook.call(DOMPurify, currentNode, data, CONFIG); + }); + } + /** + * _sanitizeElements + * + * @protect nodeName + * @protect textContent + * @protect removeChild + * @param currentNode to check for permission to exist + * @return true if node was killed, false if left alive + */ + const _sanitizeElements = function _sanitizeElements(currentNode) { + let content = null; + /* Execute a hook if present */ + _executeHook('beforeSanitizeElements', currentNode, null); + /* Check if element is clobbered or can clobber */ + if (_isClobbered(currentNode)) { + _forceRemove(currentNode); + return true; + } + /* Now let's check the element's type and name */ + const tagName = transformCaseFunc(currentNode.nodeName); + /* Execute a hook if present */ + _executeHook('uponSanitizeElement', currentNode, { + tagName, + allowedTags: ALLOWED_TAGS + }); + /* Detect mXSS attempts abusing namespace confusion */ + if (currentNode.hasChildNodes() && !_isNode(currentNode.firstElementChild) && regExpTest(/<[/\w]/g, currentNode.innerHTML) && regExpTest(/<[/\w]/g, currentNode.textContent)) { + _forceRemove(currentNode); + return true; + } + /* Remove any occurrence of processing instructions */ + if (currentNode.nodeType === NODE_TYPE.progressingInstruction) { + _forceRemove(currentNode); + return true; + } + /* Remove any kind of possibly harmful comments */ + if (SAFE_FOR_XML && currentNode.nodeType === NODE_TYPE.comment && regExpTest(/<[/\w]/g, currentNode.data)) { + _forceRemove(currentNode); + return true; + } + /* Remove element if anything forbids its presence */ + if (!ALLOWED_TAGS[tagName] || FORBID_TAGS[tagName]) { + /* Check if we have a custom element to handle */ + if (!FORBID_TAGS[tagName] && _isBasicCustomElement(tagName)) { + if (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof RegExp && regExpTest(CUSTOM_ELEMENT_HANDLING.tagNameCheck, tagName)) { + return false; + } + if (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof Function && CUSTOM_ELEMENT_HANDLING.tagNameCheck(tagName)) { + return false; + } + } + /* Keep content except for bad-listed elements */ + if (KEEP_CONTENT && !FORBID_CONTENTS[tagName]) { + const parentNode = getParentNode(currentNode) || currentNode.parentNode; + const childNodes = getChildNodes(currentNode) || currentNode.childNodes; + if (childNodes && parentNode) { + const childCount = childNodes.length; + for (let i = childCount - 1; i >= 0; --i) { + const childClone = cloneNode(childNodes[i], true); + childClone.__removalCount = (currentNode.__removalCount || 0) + 1; + parentNode.insertBefore(childClone, getNextSibling(currentNode)); + } + } + } + _forceRemove(currentNode); + return true; + } + /* Check whether element has a valid namespace */ + if (currentNode instanceof Element && !_checkValidNamespace(currentNode)) { + _forceRemove(currentNode); + return true; + } + /* Make sure that older browsers don't get fallback-tag mXSS */ + if ((tagName === 'noscript' || tagName === 'noembed' || tagName === 'noframes') && regExpTest(/<\/no(script|embed|frames)/i, currentNode.innerHTML)) { + _forceRemove(currentNode); + return true; + } + /* Sanitize element content to be template-safe */ + if (SAFE_FOR_TEMPLATES && currentNode.nodeType === NODE_TYPE.text) { + /* Get the element's text content */ + content = currentNode.textContent; + arrayForEach([MUSTACHE_EXPR, ERB_EXPR, TMPLIT_EXPR], expr => { + content = stringReplace(content, expr, ' '); + }); + if (currentNode.textContent !== content) { + arrayPush(DOMPurify.removed, { + element: currentNode.cloneNode() + }); + currentNode.textContent = content; + } + } + /* Execute a hook if present */ + _executeHook('afterSanitizeElements', currentNode, null); + return false; + }; + /** + * _isValidAttribute + * + * @param lcTag Lowercase tag name of containing element. + * @param lcName Lowercase attribute name. + * @param value Attribute value. + * @return Returns true if `value` is valid, otherwise false. + */ + // eslint-disable-next-line complexity + const _isValidAttribute = function _isValidAttribute(lcTag, lcName, value) { + /* Make sure attribute cannot clobber */ + if (SANITIZE_DOM && (lcName === 'id' || lcName === 'name') && (value in document || value in formElement)) { + return false; + } + /* Allow valid data-* attributes: At least one character after "-" + (https://html.spec.whatwg.org/multipage/dom.html#embedding-custom-non-visible-data-with-the-data-*-attributes) + XML-compatible (https://html.spec.whatwg.org/multipage/infrastructure.html#xml-compatible and http://www.w3.org/TR/xml/#d0e804) + We don't need to check the value; it's always URI safe. */ + if (ALLOW_DATA_ATTR && !FORBID_ATTR[lcName] && regExpTest(DATA_ATTR, lcName)) ; else if (ALLOW_ARIA_ATTR && regExpTest(ARIA_ATTR, lcName)) ; else if (!ALLOWED_ATTR[lcName] || FORBID_ATTR[lcName]) { + if ( + // First condition does a very basic check if a) it's basically a valid custom element tagname AND + // b) if the tagName passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.tagNameCheck + // and c) if the attribute name passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.attributeNameCheck + _isBasicCustomElement(lcTag) && (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof RegExp && regExpTest(CUSTOM_ELEMENT_HANDLING.tagNameCheck, lcTag) || CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof Function && CUSTOM_ELEMENT_HANDLING.tagNameCheck(lcTag)) && (CUSTOM_ELEMENT_HANDLING.attributeNameCheck instanceof RegExp && regExpTest(CUSTOM_ELEMENT_HANDLING.attributeNameCheck, lcName) || CUSTOM_ELEMENT_HANDLING.attributeNameCheck instanceof Function && CUSTOM_ELEMENT_HANDLING.attributeNameCheck(lcName)) || + // Alternative, second condition checks if it's an `is`-attribute, AND + // the value passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.tagNameCheck + lcName === 'is' && CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements && (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof RegExp && regExpTest(CUSTOM_ELEMENT_HANDLING.tagNameCheck, value) || CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof Function && CUSTOM_ELEMENT_HANDLING.tagNameCheck(value))) ; else { + return false; + } + /* Check value is safe. First, is attr inert? If so, is safe */ + } else if (URI_SAFE_ATTRIBUTES[lcName]) ; else if (regExpTest(IS_ALLOWED_URI$1, stringReplace(value, ATTR_WHITESPACE, ''))) ; else if ((lcName === 'src' || lcName === 'xlink:href' || lcName === 'href') && lcTag !== 'script' && stringIndexOf(value, 'data:') === 0 && DATA_URI_TAGS[lcTag]) ; else if (ALLOW_UNKNOWN_PROTOCOLS && !regExpTest(IS_SCRIPT_OR_DATA, stringReplace(value, ATTR_WHITESPACE, ''))) ; else if (value) { + return false; + } else ; + return true; + }; + /** + * _isBasicCustomElement + * checks if at least one dash is included in tagName, and it's not the first char + * for more sophisticated checking see https://github.com/sindresorhus/validate-element-name + * + * @param tagName name of the tag of the node to sanitize + * @returns Returns true if the tag name meets the basic criteria for a custom element, otherwise false. + */ + const _isBasicCustomElement = function _isBasicCustomElement(tagName) { + return tagName !== 'annotation-xml' && stringMatch(tagName, CUSTOM_ELEMENT); + }; + /** + * _sanitizeAttributes + * + * @protect attributes + * @protect nodeName + * @protect removeAttribute + * @protect setAttribute + * + * @param currentNode to sanitize + */ + const _sanitizeAttributes = function _sanitizeAttributes(currentNode) { + /* Execute a hook if present */ + _executeHook('beforeSanitizeAttributes', currentNode, null); + const { + attributes + } = currentNode; + /* Check if we have attributes; if not we might have a text node */ + if (!attributes) { + return; + } + const hookEvent = { + attrName: '', + attrValue: '', + keepAttr: true, + allowedAttributes: ALLOWED_ATTR, + forceKeepAttr: undefined + }; + let l = attributes.length; + /* Go backwards over all attributes; safely remove bad ones */ + while (l--) { + const attr = attributes[l]; + const { + name, + namespaceURI, + value: attrValue + } = attr; + const lcName = transformCaseFunc(name); + let value = name === 'value' ? attrValue : stringTrim(attrValue); + /* Execute a hook if present */ + hookEvent.attrName = lcName; + hookEvent.attrValue = value; + hookEvent.keepAttr = true; + hookEvent.forceKeepAttr = undefined; // Allows developers to see this is a property they can set + _executeHook('uponSanitizeAttribute', currentNode, hookEvent); + value = hookEvent.attrValue; + /* Full DOM Clobbering protection via namespace isolation, + * Prefix id and name attributes with `user-content-` + */ + if (SANITIZE_NAMED_PROPS && (lcName === 'id' || lcName === 'name')) { + // Remove the attribute with this value + _removeAttribute(name, currentNode); + // Prefix the value and later re-create the attribute with the sanitized value + value = SANITIZE_NAMED_PROPS_PREFIX + value; + } + /* Work around a security issue with comments inside attributes */ + if (SAFE_FOR_XML && regExpTest(/((--!?|])>)|<\/(style|title)/i, value)) { + _removeAttribute(name, currentNode); + continue; + } + /* Did the hooks approve of the attribute? */ + if (hookEvent.forceKeepAttr) { + continue; + } + /* Remove attribute */ + _removeAttribute(name, currentNode); + /* Did the hooks approve of the attribute? */ + if (!hookEvent.keepAttr) { + continue; + } + /* Work around a security issue in jQuery 3.0 */ + if (!ALLOW_SELF_CLOSE_IN_ATTR && regExpTest(/\/>/i, value)) { + _removeAttribute(name, currentNode); + continue; + } + /* Sanitize attribute content to be template-safe */ + if (SAFE_FOR_TEMPLATES) { + arrayForEach([MUSTACHE_EXPR, ERB_EXPR, TMPLIT_EXPR], expr => { + value = stringReplace(value, expr, ' '); + }); + } + /* Is `value` valid for this attribute? */ + const lcTag = transformCaseFunc(currentNode.nodeName); + if (!_isValidAttribute(lcTag, lcName, value)) { + continue; + } + /* Handle attributes that require Trusted Types */ + if (trustedTypesPolicy && typeof trustedTypes === 'object' && typeof trustedTypes.getAttributeType === 'function') { + if (namespaceURI) ; else { + switch (trustedTypes.getAttributeType(lcTag, lcName)) { + case 'TrustedHTML': + { + value = trustedTypesPolicy.createHTML(value); + break; + } + case 'TrustedScriptURL': + { + value = trustedTypesPolicy.createScriptURL(value); + break; + } + } + } + } + /* Handle invalid data-* attribute set by try-catching it */ + try { + if (namespaceURI) { + currentNode.setAttributeNS(namespaceURI, name, value); + } else { + /* Fallback to setAttribute() for browser-unrecognized namespaces e.g. "x-schema". */ + currentNode.setAttribute(name, value); + } + if (_isClobbered(currentNode)) { + _forceRemove(currentNode); + } else { + arrayPop(DOMPurify.removed); + } + } catch (_) {} + } + /* Execute a hook if present */ + _executeHook('afterSanitizeAttributes', currentNode, null); + }; + /** + * _sanitizeShadowDOM + * + * @param fragment to iterate over recursively + */ + const _sanitizeShadowDOM = function _sanitizeShadowDOM(fragment) { + let shadowNode = null; + const shadowIterator = _createNodeIterator(fragment); + /* Execute a hook if present */ + _executeHook('beforeSanitizeShadowDOM', fragment, null); + while (shadowNode = shadowIterator.nextNode()) { + /* Execute a hook if present */ + _executeHook('uponSanitizeShadowNode', shadowNode, null); + /* Sanitize tags and elements */ + if (_sanitizeElements(shadowNode)) { + continue; + } + /* Deep shadow DOM detected */ + if (shadowNode.content instanceof DocumentFragment) { + _sanitizeShadowDOM(shadowNode.content); + } + /* Check attributes, sanitize if necessary */ + _sanitizeAttributes(shadowNode); + } + /* Execute a hook if present */ + _executeHook('afterSanitizeShadowDOM', fragment, null); + }; + // eslint-disable-next-line complexity + DOMPurify.sanitize = function (dirty) { + let cfg = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {}; + let body = null; + let importedNode = null; + let currentNode = null; + let returnNode = null; + /* Make sure we have a string to sanitize. + DO NOT return early, as this will return the wrong type if + the user has requested a DOM object rather than a string */ + IS_EMPTY_INPUT = !dirty; + if (IS_EMPTY_INPUT) { + dirty = ''; + } + /* Stringify, in case dirty is an object */ + if (typeof dirty !== 'string' && !_isNode(dirty)) { + if (typeof dirty.toString === 'function') { + dirty = dirty.toString(); + if (typeof dirty !== 'string') { + throw typeErrorCreate('dirty is not a string, aborting'); + } + } else { + throw typeErrorCreate('toString is not a function'); + } + } + /* Return dirty HTML if DOMPurify cannot run */ + if (!DOMPurify.isSupported) { + return dirty; + } + /* Assign config vars */ + if (!SET_CONFIG) { + _parseConfig(cfg); + } + /* Clean up removed elements */ + DOMPurify.removed = []; + /* Check if dirty is correctly typed for IN_PLACE */ + if (typeof dirty === 'string') { + IN_PLACE = false; + } + if (IN_PLACE) { + /* Do some early pre-sanitization to avoid unsafe root nodes */ + if (dirty.nodeName) { + const tagName = transformCaseFunc(dirty.nodeName); + if (!ALLOWED_TAGS[tagName] || FORBID_TAGS[tagName]) { + throw typeErrorCreate('root node is forbidden and cannot be sanitized in-place'); + } + } + } else if (dirty instanceof Node) { + /* If dirty is a DOM element, append to an empty document to avoid + elements being stripped by the parser */ + body = _initDocument(''); + importedNode = body.ownerDocument.importNode(dirty, true); + if (importedNode.nodeType === NODE_TYPE.element && importedNode.nodeName === 'BODY') { + /* Node is already a body, use as is */ + body = importedNode; + } else if (importedNode.nodeName === 'HTML') { + body = importedNode; + } else { + // eslint-disable-next-line unicorn/prefer-dom-node-append + body.appendChild(importedNode); + } + } else { + /* Exit directly if we have nothing to do */ + if (!RETURN_DOM && !SAFE_FOR_TEMPLATES && !WHOLE_DOCUMENT && + // eslint-disable-next-line unicorn/prefer-includes + dirty.indexOf('<') === -1) { + return trustedTypesPolicy && RETURN_TRUSTED_TYPE ? trustedTypesPolicy.createHTML(dirty) : dirty; + } + /* Initialize the document to work on */ + body = _initDocument(dirty); + /* Check we have a DOM node from the data */ + if (!body) { + return RETURN_DOM ? null : RETURN_TRUSTED_TYPE ? emptyHTML : ''; + } + } + /* Remove first element node (ours) if FORCE_BODY is set */ + if (body && FORCE_BODY) { + _forceRemove(body.firstChild); + } + /* Get node iterator */ + const nodeIterator = _createNodeIterator(IN_PLACE ? dirty : body); + /* Now start iterating over the created document */ + while (currentNode = nodeIterator.nextNode()) { + /* Sanitize tags and elements */ + if (_sanitizeElements(currentNode)) { + continue; + } + /* Shadow DOM detected, sanitize it */ + if (currentNode.content instanceof DocumentFragment) { + _sanitizeShadowDOM(currentNode.content); + } + /* Check attributes, sanitize if necessary */ + _sanitizeAttributes(currentNode); + } + /* If we sanitized `dirty` in-place, return it. */ + if (IN_PLACE) { + return dirty; + } + /* Return sanitized string or DOM */ + if (RETURN_DOM) { + if (RETURN_DOM_FRAGMENT) { + returnNode = createDocumentFragment.call(body.ownerDocument); + while (body.firstChild) { + // eslint-disable-next-line unicorn/prefer-dom-node-append + returnNode.appendChild(body.firstChild); + } + } else { + returnNode = body; + } + if (ALLOWED_ATTR.shadowroot || ALLOWED_ATTR.shadowrootmode) { + /* + AdoptNode() is not used because internal state is not reset + (e.g. the past names map of a HTMLFormElement), this is safe + in theory but we would rather not risk another attack vector. + The state that is cloned by importNode() is explicitly defined + by the specs. + */ + returnNode = importNode.call(originalDocument, returnNode, true); + } + return returnNode; + } + let serializedHTML = WHOLE_DOCUMENT ? body.outerHTML : body.innerHTML; + /* Serialize doctype if allowed */ + if (WHOLE_DOCUMENT && ALLOWED_TAGS['!doctype'] && body.ownerDocument && body.ownerDocument.doctype && body.ownerDocument.doctype.name && regExpTest(DOCTYPE_NAME, body.ownerDocument.doctype.name)) { + serializedHTML = '\n' + serializedHTML; + } + /* Sanitize final string template-safe */ + if (SAFE_FOR_TEMPLATES) { + arrayForEach([MUSTACHE_EXPR, ERB_EXPR, TMPLIT_EXPR], expr => { + serializedHTML = stringReplace(serializedHTML, expr, ' '); + }); + } + return trustedTypesPolicy && RETURN_TRUSTED_TYPE ? trustedTypesPolicy.createHTML(serializedHTML) : serializedHTML; + }; + DOMPurify.setConfig = function () { + let cfg = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {}; + _parseConfig(cfg); + SET_CONFIG = true; + }; + DOMPurify.clearConfig = function () { + CONFIG = null; + SET_CONFIG = false; + }; + DOMPurify.isValidAttribute = function (tag, attr, value) { + /* Initialize shared config vars if necessary. */ + if (!CONFIG) { + _parseConfig({}); + } + const lcTag = transformCaseFunc(tag); + const lcName = transformCaseFunc(attr); + return _isValidAttribute(lcTag, lcName, value); + }; + DOMPurify.addHook = function (entryPoint, hookFunction) { + if (typeof hookFunction !== 'function') { + return; + } + hooks[entryPoint] = hooks[entryPoint] || []; + arrayPush(hooks[entryPoint], hookFunction); + }; + DOMPurify.removeHook = function (entryPoint) { + if (hooks[entryPoint]) { + return arrayPop(hooks[entryPoint]); + } + }; + DOMPurify.removeHooks = function (entryPoint) { + if (hooks[entryPoint]) { + hooks[entryPoint] = []; + } + }; + DOMPurify.removeAllHooks = function () { + hooks = {}; + }; + return DOMPurify; + } + var purify = createDOMPurify(); + + return purify; + +})); //# sourceMappingURL=purify.min.js.map diff --git a/dist/purify.min.js.map b/dist/purify.min.js.map index d1a958ad1..4ec2cf939 100644 --- a/dist/purify.min.js.map +++ b/dist/purify.min.js.map @@ -1 +1 @@ -{"version":3,"file":"purify.min.js","sources":["../src/utils.js","../src/tags.js","../src/attrs.js","../src/regexp.js","../src/purify.js"],"sourcesContent":["const {\n entries,\n setPrototypeOf,\n isFrozen,\n getPrototypeOf,\n getOwnPropertyDescriptor,\n} = Object;\n\nlet { freeze, seal, create } = Object; // eslint-disable-line import/no-mutable-exports\nlet { apply, construct } = typeof Reflect !== 'undefined' && Reflect;\n\nif (!freeze) {\n freeze = function (x) {\n return x;\n };\n}\n\nif (!seal) {\n seal = function (x) {\n return x;\n };\n}\n\nif (!apply) {\n apply = function (fun, thisValue, args) {\n return fun.apply(thisValue, args);\n };\n}\n\nif (!construct) {\n construct = function (Func, args) {\n return new Func(...args);\n };\n}\n\nconst arrayForEach = unapply(Array.prototype.forEach);\nconst arrayIndexOf = unapply(Array.prototype.indexOf);\nconst arrayPop = unapply(Array.prototype.pop);\nconst arrayPush = unapply(Array.prototype.push);\nconst arraySlice = unapply(Array.prototype.slice);\n\nconst stringToLowerCase = unapply(String.prototype.toLowerCase);\nconst stringToString = unapply(String.prototype.toString);\nconst stringMatch = unapply(String.prototype.match);\nconst stringReplace = unapply(String.prototype.replace);\nconst stringIndexOf = unapply(String.prototype.indexOf);\nconst stringTrim = unapply(String.prototype.trim);\n\nconst objectHasOwnProperty = unapply(Object.prototype.hasOwnProperty);\n\nconst regExpTest = unapply(RegExp.prototype.test);\n\nconst typeErrorCreate = unconstruct(TypeError);\n\n/**\n * Creates a new function that calls the given function with a specified thisArg and arguments.\n *\n * @param {Function} func - The function to be wrapped and called.\n * @returns {Function} A new function that calls the given function with a specified thisArg and arguments.\n */\nfunction unapply(func) {\n return (thisArg, ...args) => apply(func, thisArg, args);\n}\n\n/**\n * Creates a new function that constructs an instance of the given constructor function with the provided arguments.\n *\n * @param {Function} func - The constructor function to be wrapped and called.\n * @returns {Function} A new function that constructs an instance of the given constructor function with the provided arguments.\n */\nfunction unconstruct(func) {\n return (...args) => construct(func, args);\n}\n\n/**\n * Add properties to a lookup table\n *\n * @param {Object} set - The set to which elements will be added.\n * @param {Array} array - The array containing elements to be added to the set.\n * @param {Function} transformCaseFunc - An optional function to transform the case of each element before adding to the set.\n * @returns {Object} The modified set with added elements.\n */\nfunction addToSet(set, array, transformCaseFunc = stringToLowerCase) {\n if (setPrototypeOf) {\n // Make 'in' and truthy checks like Boolean(set.constructor)\n // independent of any properties defined on Object.prototype.\n // Prevent prototype setters from intercepting set as a this value.\n setPrototypeOf(set, null);\n }\n\n let l = array.length;\n while (l--) {\n let element = array[l];\n if (typeof element === 'string') {\n const lcElement = transformCaseFunc(element);\n if (lcElement !== element) {\n // Config presets (e.g. tags.js, attrs.js) are immutable.\n if (!isFrozen(array)) {\n array[l] = lcElement;\n }\n\n element = lcElement;\n }\n }\n\n set[element] = true;\n }\n\n return set;\n}\n\n/**\n * Clean up an array to harden against CSPP\n *\n * @param {Array} array - The array to be cleaned.\n * @returns {Array} The cleaned version of the array\n */\nfunction cleanArray(array) {\n for (let index = 0; index < array.length; index++) {\n const isPropertyExist = objectHasOwnProperty(array, index);\n\n if (!isPropertyExist) {\n array[index] = null;\n }\n }\n\n return array;\n}\n\n/**\n * Shallow clone an object\n *\n * @param {Object} object - The object to be cloned.\n * @returns {Object} A new object that copies the original.\n */\nfunction clone(object) {\n const newObject = create(null);\n\n for (const [property, value] of entries(object)) {\n const isPropertyExist = objectHasOwnProperty(object, property);\n\n if (isPropertyExist) {\n if (Array.isArray(value)) {\n newObject[property] = cleanArray(value);\n } else if (\n value &&\n typeof value === 'object' &&\n value.constructor === Object\n ) {\n newObject[property] = clone(value);\n } else {\n newObject[property] = value;\n }\n }\n }\n\n return newObject;\n}\n\n/**\n * This method automatically checks if the prop is function or getter and behaves accordingly.\n *\n * @param {Object} object - The object to look up the getter function in its prototype chain.\n * @param {String} prop - The property name for which to find the getter function.\n * @returns {Function} The getter function found in the prototype chain or a fallback function.\n */\nfunction lookupGetter(object, prop) {\n while (object !== null) {\n const desc = getOwnPropertyDescriptor(object, prop);\n\n if (desc) {\n if (desc.get) {\n return unapply(desc.get);\n }\n\n if (typeof desc.value === 'function') {\n return unapply(desc.value);\n }\n }\n\n object = getPrototypeOf(object);\n }\n\n function fallbackValue() {\n return null;\n }\n\n return fallbackValue;\n}\n\nexport {\n // Array\n arrayForEach,\n arrayIndexOf,\n arrayPop,\n arrayPush,\n arraySlice,\n // Object\n entries,\n freeze,\n getPrototypeOf,\n getOwnPropertyDescriptor,\n isFrozen,\n setPrototypeOf,\n seal,\n clone,\n create,\n objectHasOwnProperty,\n // RegExp\n regExpTest,\n // String\n stringIndexOf,\n stringMatch,\n stringReplace,\n stringToLowerCase,\n stringToString,\n stringTrim,\n // Errors\n typeErrorCreate,\n // Other\n lookupGetter,\n addToSet,\n // Reflect\n unapply,\n unconstruct,\n};\n","import { freeze } from './utils.js';\n\nexport const html = freeze([\n 'a',\n 'abbr',\n 'acronym',\n 'address',\n 'area',\n 'article',\n 'aside',\n 'audio',\n 'b',\n 'bdi',\n 'bdo',\n 'big',\n 'blink',\n 'blockquote',\n 'body',\n 'br',\n 'button',\n 'canvas',\n 'caption',\n 'center',\n 'cite',\n 'code',\n 'col',\n 'colgroup',\n 'content',\n 'data',\n 'datalist',\n 'dd',\n 'decorator',\n 'del',\n 'details',\n 'dfn',\n 'dialog',\n 'dir',\n 'div',\n 'dl',\n 'dt',\n 'element',\n 'em',\n 'fieldset',\n 'figcaption',\n 'figure',\n 'font',\n 'footer',\n 'form',\n 'h1',\n 'h2',\n 'h3',\n 'h4',\n 'h5',\n 'h6',\n 'head',\n 'header',\n 'hgroup',\n 'hr',\n 'html',\n 'i',\n 'img',\n 'input',\n 'ins',\n 'kbd',\n 'label',\n 'legend',\n 'li',\n 'main',\n 'map',\n 'mark',\n 'marquee',\n 'menu',\n 'menuitem',\n 'meter',\n 'nav',\n 'nobr',\n 'ol',\n 'optgroup',\n 'option',\n 'output',\n 'p',\n 'picture',\n 'pre',\n 'progress',\n 'q',\n 'rp',\n 'rt',\n 'ruby',\n 's',\n 'samp',\n 'section',\n 'select',\n 'shadow',\n 'small',\n 'source',\n 'spacer',\n 'span',\n 'strike',\n 'strong',\n 'style',\n 'sub',\n 'summary',\n 'sup',\n 'table',\n 'tbody',\n 'td',\n 'template',\n 'textarea',\n 'tfoot',\n 'th',\n 'thead',\n 'time',\n 'tr',\n 'track',\n 'tt',\n 'u',\n 'ul',\n 'var',\n 'video',\n 'wbr',\n]);\n\n// SVG\nexport const svg = freeze([\n 'svg',\n 'a',\n 'altglyph',\n 'altglyphdef',\n 'altglyphitem',\n 'animatecolor',\n 'animatemotion',\n 'animatetransform',\n 'circle',\n 'clippath',\n 'defs',\n 'desc',\n 'ellipse',\n 'filter',\n 'font',\n 'g',\n 'glyph',\n 'glyphref',\n 'hkern',\n 'image',\n 'line',\n 'lineargradient',\n 'marker',\n 'mask',\n 'metadata',\n 'mpath',\n 'path',\n 'pattern',\n 'polygon',\n 'polyline',\n 'radialgradient',\n 'rect',\n 'stop',\n 'style',\n 'switch',\n 'symbol',\n 'text',\n 'textpath',\n 'title',\n 'tref',\n 'tspan',\n 'view',\n 'vkern',\n]);\n\nexport const svgFilters = freeze([\n 'feBlend',\n 'feColorMatrix',\n 'feComponentTransfer',\n 'feComposite',\n 'feConvolveMatrix',\n 'feDiffuseLighting',\n 'feDisplacementMap',\n 'feDistantLight',\n 'feDropShadow',\n 'feFlood',\n 'feFuncA',\n 'feFuncB',\n 'feFuncG',\n 'feFuncR',\n 'feGaussianBlur',\n 'feImage',\n 'feMerge',\n 'feMergeNode',\n 'feMorphology',\n 'feOffset',\n 'fePointLight',\n 'feSpecularLighting',\n 'feSpotLight',\n 'feTile',\n 'feTurbulence',\n]);\n\n// List of SVG elements that are disallowed by default.\n// We still need to know them so that we can do namespace\n// checks properly in case one wants to add them to\n// allow-list.\nexport const svgDisallowed = freeze([\n 'animate',\n 'color-profile',\n 'cursor',\n 'discard',\n 'font-face',\n 'font-face-format',\n 'font-face-name',\n 'font-face-src',\n 'font-face-uri',\n 'foreignobject',\n 'hatch',\n 'hatchpath',\n 'mesh',\n 'meshgradient',\n 'meshpatch',\n 'meshrow',\n 'missing-glyph',\n 'script',\n 'set',\n 'solidcolor',\n 'unknown',\n 'use',\n]);\n\nexport const mathMl = freeze([\n 'math',\n 'menclose',\n 'merror',\n 'mfenced',\n 'mfrac',\n 'mglyph',\n 'mi',\n 'mlabeledtr',\n 'mmultiscripts',\n 'mn',\n 'mo',\n 'mover',\n 'mpadded',\n 'mphantom',\n 'mroot',\n 'mrow',\n 'ms',\n 'mspace',\n 'msqrt',\n 'mstyle',\n 'msub',\n 'msup',\n 'msubsup',\n 'mtable',\n 'mtd',\n 'mtext',\n 'mtr',\n 'munder',\n 'munderover',\n 'mprescripts',\n]);\n\n// Similarly to SVG, we want to know all MathML elements,\n// even those that we disallow by default.\nexport const mathMlDisallowed = freeze([\n 'maction',\n 'maligngroup',\n 'malignmark',\n 'mlongdiv',\n 'mscarries',\n 'mscarry',\n 'msgroup',\n 'mstack',\n 'msline',\n 'msrow',\n 'semantics',\n 'annotation',\n 'annotation-xml',\n 'mprescripts',\n 'none',\n]);\n\nexport const text = freeze(['#text']);\n","import { freeze } from './utils.js';\n\nexport const html = freeze([\n 'accept',\n 'action',\n 'align',\n 'alt',\n 'autocapitalize',\n 'autocomplete',\n 'autopictureinpicture',\n 'autoplay',\n 'background',\n 'bgcolor',\n 'border',\n 'capture',\n 'cellpadding',\n 'cellspacing',\n 'checked',\n 'cite',\n 'class',\n 'clear',\n 'color',\n 'cols',\n 'colspan',\n 'controls',\n 'controlslist',\n 'coords',\n 'crossorigin',\n 'datetime',\n 'decoding',\n 'default',\n 'dir',\n 'disabled',\n 'disablepictureinpicture',\n 'disableremoteplayback',\n 'download',\n 'draggable',\n 'enctype',\n 'enterkeyhint',\n 'face',\n 'for',\n 'headers',\n 'height',\n 'hidden',\n 'high',\n 'href',\n 'hreflang',\n 'id',\n 'inputmode',\n 'integrity',\n 'ismap',\n 'kind',\n 'label',\n 'lang',\n 'list',\n 'loading',\n 'loop',\n 'low',\n 'max',\n 'maxlength',\n 'media',\n 'method',\n 'min',\n 'minlength',\n 'multiple',\n 'muted',\n 'name',\n 'nonce',\n 'noshade',\n 'novalidate',\n 'nowrap',\n 'open',\n 'optimum',\n 'pattern',\n 'placeholder',\n 'playsinline',\n 'popover',\n 'popovertarget',\n 'popovertargetaction',\n 'poster',\n 'preload',\n 'pubdate',\n 'radiogroup',\n 'readonly',\n 'rel',\n 'required',\n 'rev',\n 'reversed',\n 'role',\n 'rows',\n 'rowspan',\n 'spellcheck',\n 'scope',\n 'selected',\n 'shape',\n 'size',\n 'sizes',\n 'span',\n 'srclang',\n 'start',\n 'src',\n 'srcset',\n 'step',\n 'style',\n 'summary',\n 'tabindex',\n 'title',\n 'translate',\n 'type',\n 'usemap',\n 'valign',\n 'value',\n 'width',\n 'wrap',\n 'xmlns',\n 'slot',\n]);\n\nexport const svg = freeze([\n 'accent-height',\n 'accumulate',\n 'additive',\n 'alignment-baseline',\n 'amplitude',\n 'ascent',\n 'attributename',\n 'attributetype',\n 'azimuth',\n 'basefrequency',\n 'baseline-shift',\n 'begin',\n 'bias',\n 'by',\n 'class',\n 'clip',\n 'clippathunits',\n 'clip-path',\n 'clip-rule',\n 'color',\n 'color-interpolation',\n 'color-interpolation-filters',\n 'color-profile',\n 'color-rendering',\n 'cx',\n 'cy',\n 'd',\n 'dx',\n 'dy',\n 'diffuseconstant',\n 'direction',\n 'display',\n 'divisor',\n 'dur',\n 'edgemode',\n 'elevation',\n 'end',\n 'exponent',\n 'fill',\n 'fill-opacity',\n 'fill-rule',\n 'filter',\n 'filterunits',\n 'flood-color',\n 'flood-opacity',\n 'font-family',\n 'font-size',\n 'font-size-adjust',\n 'font-stretch',\n 'font-style',\n 'font-variant',\n 'font-weight',\n 'fx',\n 'fy',\n 'g1',\n 'g2',\n 'glyph-name',\n 'glyphref',\n 'gradientunits',\n 'gradienttransform',\n 'height',\n 'href',\n 'id',\n 'image-rendering',\n 'in',\n 'in2',\n 'intercept',\n 'k',\n 'k1',\n 'k2',\n 'k3',\n 'k4',\n 'kerning',\n 'keypoints',\n 'keysplines',\n 'keytimes',\n 'lang',\n 'lengthadjust',\n 'letter-spacing',\n 'kernelmatrix',\n 'kernelunitlength',\n 'lighting-color',\n 'local',\n 'marker-end',\n 'marker-mid',\n 'marker-start',\n 'markerheight',\n 'markerunits',\n 'markerwidth',\n 'maskcontentunits',\n 'maskunits',\n 'max',\n 'mask',\n 'media',\n 'method',\n 'mode',\n 'min',\n 'name',\n 'numoctaves',\n 'offset',\n 'operator',\n 'opacity',\n 'order',\n 'orient',\n 'orientation',\n 'origin',\n 'overflow',\n 'paint-order',\n 'path',\n 'pathlength',\n 'patterncontentunits',\n 'patterntransform',\n 'patternunits',\n 'points',\n 'preservealpha',\n 'preserveaspectratio',\n 'primitiveunits',\n 'r',\n 'rx',\n 'ry',\n 'radius',\n 'refx',\n 'refy',\n 'repeatcount',\n 'repeatdur',\n 'restart',\n 'result',\n 'rotate',\n 'scale',\n 'seed',\n 'shape-rendering',\n 'slope',\n 'specularconstant',\n 'specularexponent',\n 'spreadmethod',\n 'startoffset',\n 'stddeviation',\n 'stitchtiles',\n 'stop-color',\n 'stop-opacity',\n 'stroke-dasharray',\n 'stroke-dashoffset',\n 'stroke-linecap',\n 'stroke-linejoin',\n 'stroke-miterlimit',\n 'stroke-opacity',\n 'stroke',\n 'stroke-width',\n 'style',\n 'surfacescale',\n 'systemlanguage',\n 'tabindex',\n 'tablevalues',\n 'targetx',\n 'targety',\n 'transform',\n 'transform-origin',\n 'text-anchor',\n 'text-decoration',\n 'text-rendering',\n 'textlength',\n 'type',\n 'u1',\n 'u2',\n 'unicode',\n 'values',\n 'viewbox',\n 'visibility',\n 'version',\n 'vert-adv-y',\n 'vert-origin-x',\n 'vert-origin-y',\n 'width',\n 'word-spacing',\n 'wrap',\n 'writing-mode',\n 'xchannelselector',\n 'ychannelselector',\n 'x',\n 'x1',\n 'x2',\n 'xmlns',\n 'y',\n 'y1',\n 'y2',\n 'z',\n 'zoomandpan',\n]);\n\nexport const mathMl = freeze([\n 'accent',\n 'accentunder',\n 'align',\n 'bevelled',\n 'close',\n 'columnsalign',\n 'columnlines',\n 'columnspan',\n 'denomalign',\n 'depth',\n 'dir',\n 'display',\n 'displaystyle',\n 'encoding',\n 'fence',\n 'frame',\n 'height',\n 'href',\n 'id',\n 'largeop',\n 'length',\n 'linethickness',\n 'lspace',\n 'lquote',\n 'mathbackground',\n 'mathcolor',\n 'mathsize',\n 'mathvariant',\n 'maxsize',\n 'minsize',\n 'movablelimits',\n 'notation',\n 'numalign',\n 'open',\n 'rowalign',\n 'rowlines',\n 'rowspacing',\n 'rowspan',\n 'rspace',\n 'rquote',\n 'scriptlevel',\n 'scriptminsize',\n 'scriptsizemultiplier',\n 'selection',\n 'separator',\n 'separators',\n 'stretchy',\n 'subscriptshift',\n 'supscriptshift',\n 'symmetric',\n 'voffset',\n 'width',\n 'xmlns',\n]);\n\nexport const xml = freeze([\n 'xlink:href',\n 'xml:id',\n 'xlink:title',\n 'xml:space',\n 'xmlns:xlink',\n]);\n","import { seal } from './utils.js';\n\n// eslint-disable-next-line unicorn/better-regex\nexport const MUSTACHE_EXPR = seal(/\\{\\{[\\w\\W]*|[\\w\\W]*\\}\\}/gm); // Specify template detection regex for SAFE_FOR_TEMPLATES mode\nexport const ERB_EXPR = seal(/<%[\\w\\W]*|[\\w\\W]*%>/gm);\nexport const TMPLIT_EXPR = seal(/\\${[\\w\\W]*}/gm);\nexport const DATA_ATTR = seal(/^data-[\\-\\w.\\u00B7-\\uFFFF]/); // eslint-disable-line no-useless-escape\nexport const ARIA_ATTR = seal(/^aria-[\\-\\w]+$/); // eslint-disable-line no-useless-escape\nexport const IS_ALLOWED_URI = seal(\n /^(?:(?:(?:f|ht)tps?|mailto|tel|callto|sms|cid|xmpp):|[^a-z]|[a-z+.\\-]+(?:[^a-z+.\\-:]|$))/i // eslint-disable-line no-useless-escape\n);\nexport const IS_SCRIPT_OR_DATA = seal(/^(?:\\w+script|data):/i);\nexport const ATTR_WHITESPACE = seal(\n /[\\u0000-\\u0020\\u00A0\\u1680\\u180E\\u2000-\\u2029\\u205F\\u3000]/g // eslint-disable-line no-control-regex\n);\nexport const DOCTYPE_NAME = seal(/^html$/i);\nexport const CUSTOM_ELEMENT = seal(/^[a-z][.\\w]*(-[.\\w]+)+$/i);\n","import * as TAGS from './tags.js';\nimport * as ATTRS from './attrs.js';\nimport * as EXPRESSIONS from './regexp.js';\nimport {\n addToSet,\n clone,\n entries,\n freeze,\n arrayForEach,\n arrayPop,\n arrayPush,\n stringMatch,\n stringReplace,\n stringToLowerCase,\n stringToString,\n stringIndexOf,\n stringTrim,\n regExpTest,\n typeErrorCreate,\n lookupGetter,\n create,\n objectHasOwnProperty,\n} from './utils.js';\n\n// https://developer.mozilla.org/en-US/docs/Web/API/Node/nodeType\nconst NODE_TYPE = {\n element: 1,\n attribute: 2,\n text: 3,\n cdataSection: 4,\n entityReference: 5, // Deprecated\n entityNode: 6, // Deprecated\n progressingInstruction: 7,\n comment: 8,\n document: 9,\n documentType: 10,\n documentFragment: 11,\n notation: 12, // Deprecated\n};\n\nconst getGlobal = function () {\n return typeof window === 'undefined' ? null : window;\n};\n\n/**\n * Creates a no-op policy for internal use only.\n * Don't export this function outside this module!\n * @param {TrustedTypePolicyFactory} trustedTypes The policy factory.\n * @param {HTMLScriptElement} purifyHostElement The Script element used to load DOMPurify (to determine policy name suffix).\n * @return {TrustedTypePolicy} The policy created (or null, if Trusted Types\n * are not supported or creating the policy failed).\n */\nconst _createTrustedTypesPolicy = function (trustedTypes, purifyHostElement) {\n if (\n typeof trustedTypes !== 'object' ||\n typeof trustedTypes.createPolicy !== 'function'\n ) {\n return null;\n }\n\n // Allow the callers to control the unique policy name\n // by adding a data-tt-policy-suffix to the script element with the DOMPurify.\n // Policy creation with duplicate names throws in Trusted Types.\n let suffix = null;\n const ATTR_NAME = 'data-tt-policy-suffix';\n if (purifyHostElement && purifyHostElement.hasAttribute(ATTR_NAME)) {\n suffix = purifyHostElement.getAttribute(ATTR_NAME);\n }\n\n const policyName = 'dompurify' + (suffix ? '#' + suffix : '');\n\n try {\n return trustedTypes.createPolicy(policyName, {\n createHTML(html) {\n return html;\n },\n createScriptURL(scriptUrl) {\n return scriptUrl;\n },\n });\n } catch (_) {\n // Policy creation failed (most likely another DOMPurify script has\n // already run). Skip creating the policy, as this will only cause errors\n // if TT are enforced.\n console.warn(\n 'TrustedTypes policy ' + policyName + ' could not be created.'\n );\n return null;\n }\n};\n\nfunction createDOMPurify(window = getGlobal()) {\n const DOMPurify = (root) => createDOMPurify(root);\n\n /**\n * Version label, exposed for easier checks\n * if DOMPurify is up to date or not\n */\n DOMPurify.version = VERSION;\n\n /**\n * Array of elements that DOMPurify removed during sanitation.\n * Empty if nothing was removed.\n */\n DOMPurify.removed = [];\n\n if (\n !window ||\n !window.document ||\n window.document.nodeType !== NODE_TYPE.document\n ) {\n // Not running in a browser, provide a factory function\n // so that you can pass your own Window\n DOMPurify.isSupported = false;\n\n return DOMPurify;\n }\n\n let { document } = window;\n\n const originalDocument = document;\n const currentScript = originalDocument.currentScript;\n const {\n DocumentFragment,\n HTMLTemplateElement,\n Node,\n Element,\n NodeFilter,\n NamedNodeMap = window.NamedNodeMap || window.MozNamedAttrMap,\n HTMLFormElement,\n DOMParser,\n trustedTypes,\n } = window;\n\n const ElementPrototype = Element.prototype;\n\n const cloneNode = lookupGetter(ElementPrototype, 'cloneNode');\n const remove = lookupGetter(ElementPrototype, 'remove');\n const getNextSibling = lookupGetter(ElementPrototype, 'nextSibling');\n const getChildNodes = lookupGetter(ElementPrototype, 'childNodes');\n const getParentNode = lookupGetter(ElementPrototype, 'parentNode');\n\n // As per issue #47, the web-components registry is inherited by a\n // new document created via createHTMLDocument. As per the spec\n // (http://w3c.github.io/webcomponents/spec/custom/#creating-and-passing-registries)\n // a new empty registry is used when creating a template contents owner\n // document, so we use that as our parent document to ensure nothing\n // is inherited.\n if (typeof HTMLTemplateElement === 'function') {\n const template = document.createElement('template');\n if (template.content && template.content.ownerDocument) {\n document = template.content.ownerDocument;\n }\n }\n\n let trustedTypesPolicy;\n let emptyHTML = '';\n\n const {\n implementation,\n createNodeIterator,\n createDocumentFragment,\n getElementsByTagName,\n } = document;\n const { importNode } = originalDocument;\n\n let hooks = {};\n\n /**\n * Expose whether this browser supports running the full DOMPurify.\n */\n DOMPurify.isSupported =\n typeof entries === 'function' &&\n typeof getParentNode === 'function' &&\n implementation &&\n implementation.createHTMLDocument !== undefined;\n\n const {\n MUSTACHE_EXPR,\n ERB_EXPR,\n TMPLIT_EXPR,\n DATA_ATTR,\n ARIA_ATTR,\n IS_SCRIPT_OR_DATA,\n ATTR_WHITESPACE,\n CUSTOM_ELEMENT,\n } = EXPRESSIONS;\n\n let { IS_ALLOWED_URI } = EXPRESSIONS;\n\n /**\n * We consider the elements and attributes below to be safe. Ideally\n * don't add any new ones but feel free to remove unwanted ones.\n */\n\n /* allowed element names */\n let ALLOWED_TAGS = null;\n const DEFAULT_ALLOWED_TAGS = addToSet({}, [\n ...TAGS.html,\n ...TAGS.svg,\n ...TAGS.svgFilters,\n ...TAGS.mathMl,\n ...TAGS.text,\n ]);\n\n /* Allowed attribute names */\n let ALLOWED_ATTR = null;\n const DEFAULT_ALLOWED_ATTR = addToSet({}, [\n ...ATTRS.html,\n ...ATTRS.svg,\n ...ATTRS.mathMl,\n ...ATTRS.xml,\n ]);\n\n /*\n * Configure how DOMPUrify should handle custom elements and their attributes as well as customized built-in elements.\n * @property {RegExp|Function|null} tagNameCheck one of [null, regexPattern, predicate]. Default: `null` (disallow any custom elements)\n * @property {RegExp|Function|null} attributeNameCheck one of [null, regexPattern, predicate]. Default: `null` (disallow any attributes not on the allow list)\n * @property {boolean} allowCustomizedBuiltInElements allow custom elements derived from built-ins if they pass CUSTOM_ELEMENT_HANDLING.tagNameCheck. Default: `false`.\n */\n let CUSTOM_ELEMENT_HANDLING = Object.seal(\n create(null, {\n tagNameCheck: {\n writable: true,\n configurable: false,\n enumerable: true,\n value: null,\n },\n attributeNameCheck: {\n writable: true,\n configurable: false,\n enumerable: true,\n value: null,\n },\n allowCustomizedBuiltInElements: {\n writable: true,\n configurable: false,\n enumerable: true,\n value: false,\n },\n })\n );\n\n /* Explicitly forbidden tags (overrides ALLOWED_TAGS/ADD_TAGS) */\n let FORBID_TAGS = null;\n\n /* Explicitly forbidden attributes (overrides ALLOWED_ATTR/ADD_ATTR) */\n let FORBID_ATTR = null;\n\n /* Decide if ARIA attributes are okay */\n let ALLOW_ARIA_ATTR = true;\n\n /* Decide if custom data attributes are okay */\n let ALLOW_DATA_ATTR = true;\n\n /* Decide if unknown protocols are okay */\n let ALLOW_UNKNOWN_PROTOCOLS = false;\n\n /* Decide if self-closing tags in attributes are allowed.\n * Usually removed due to a mXSS issue in jQuery 3.0 */\n let ALLOW_SELF_CLOSE_IN_ATTR = true;\n\n /* Output should be safe for common template engines.\n * This means, DOMPurify removes data attributes, mustaches and ERB\n */\n let SAFE_FOR_TEMPLATES = false;\n\n /* Output should be safe even for XML used within HTML and alike.\n * This means, DOMPurify removes comments when containing risky content.\n */\n let SAFE_FOR_XML = true;\n\n /* Decide if document with ... should be returned */\n let WHOLE_DOCUMENT = false;\n\n /* Track whether config is already set on this instance of DOMPurify. */\n let SET_CONFIG = false;\n\n /* Decide if all elements (e.g. style, script) must be children of\n * document.body. By default, browsers might move them to document.head */\n let FORCE_BODY = false;\n\n /* Decide if a DOM `HTMLBodyElement` should be returned, instead of a html\n * string (or a TrustedHTML object if Trusted Types are supported).\n * If `WHOLE_DOCUMENT` is enabled a `HTMLHtmlElement` will be returned instead\n */\n let RETURN_DOM = false;\n\n /* Decide if a DOM `DocumentFragment` should be returned, instead of a html\n * string (or a TrustedHTML object if Trusted Types are supported) */\n let RETURN_DOM_FRAGMENT = false;\n\n /* Try to return a Trusted Type object instead of a string, return a string in\n * case Trusted Types are not supported */\n let RETURN_TRUSTED_TYPE = false;\n\n /* Output should be free from DOM clobbering attacks?\n * This sanitizes markups named with colliding, clobberable built-in DOM APIs.\n */\n let SANITIZE_DOM = true;\n\n /* Achieve full DOM Clobbering protection by isolating the namespace of named\n * properties and JS variables, mitigating attacks that abuse the HTML/DOM spec rules.\n *\n * HTML/DOM spec rules that enable DOM Clobbering:\n * - Named Access on Window (§7.3.3)\n * - DOM Tree Accessors (§3.1.5)\n * - Form Element Parent-Child Relations (§4.10.3)\n * - Iframe srcdoc / Nested WindowProxies (§4.8.5)\n * - HTMLCollection (§4.2.10.2)\n *\n * Namespace isolation is implemented by prefixing `id` and `name` attributes\n * with a constant string, i.e., `user-content-`\n */\n let SANITIZE_NAMED_PROPS = false;\n const SANITIZE_NAMED_PROPS_PREFIX = 'user-content-';\n\n /* Keep element content when removing element? */\n let KEEP_CONTENT = true;\n\n /* If a `Node` is passed to sanitize(), then performs sanitization in-place instead\n * of importing it into a new Document and returning a sanitized copy */\n let IN_PLACE = false;\n\n /* Allow usage of profiles like html, svg and mathMl */\n let USE_PROFILES = {};\n\n /* Tags to ignore content of when KEEP_CONTENT is true */\n let FORBID_CONTENTS = null;\n const DEFAULT_FORBID_CONTENTS = addToSet({}, [\n 'annotation-xml',\n 'audio',\n 'colgroup',\n 'desc',\n 'foreignobject',\n 'head',\n 'iframe',\n 'math',\n 'mi',\n 'mn',\n 'mo',\n 'ms',\n 'mtext',\n 'noembed',\n 'noframes',\n 'noscript',\n 'plaintext',\n 'script',\n 'style',\n 'svg',\n 'template',\n 'thead',\n 'title',\n 'video',\n 'xmp',\n ]);\n\n /* Tags that are safe for data: URIs */\n let DATA_URI_TAGS = null;\n const DEFAULT_DATA_URI_TAGS = addToSet({}, [\n 'audio',\n 'video',\n 'img',\n 'source',\n 'image',\n 'track',\n ]);\n\n /* Attributes safe for values like \"javascript:\" */\n let URI_SAFE_ATTRIBUTES = null;\n const DEFAULT_URI_SAFE_ATTRIBUTES = addToSet({}, [\n 'alt',\n 'class',\n 'for',\n 'id',\n 'label',\n 'name',\n 'pattern',\n 'placeholder',\n 'role',\n 'summary',\n 'title',\n 'value',\n 'style',\n 'xmlns',\n ]);\n\n const MATHML_NAMESPACE = 'http://www.w3.org/1998/Math/MathML';\n const SVG_NAMESPACE = 'http://www.w3.org/2000/svg';\n const HTML_NAMESPACE = 'http://www.w3.org/1999/xhtml';\n /* Document namespace */\n let NAMESPACE = HTML_NAMESPACE;\n let IS_EMPTY_INPUT = false;\n\n /* Allowed XHTML+XML namespaces */\n let ALLOWED_NAMESPACES = null;\n const DEFAULT_ALLOWED_NAMESPACES = addToSet(\n {},\n [MATHML_NAMESPACE, SVG_NAMESPACE, HTML_NAMESPACE],\n stringToString\n );\n\n /* Parsing of strict XHTML documents */\n let PARSER_MEDIA_TYPE = null;\n const SUPPORTED_PARSER_MEDIA_TYPES = ['application/xhtml+xml', 'text/html'];\n const DEFAULT_PARSER_MEDIA_TYPE = 'text/html';\n let transformCaseFunc = null;\n\n /* Keep a reference to config to pass to hooks */\n let CONFIG = null;\n\n /* Ideally, do not touch anything below this line */\n /* ______________________________________________ */\n\n const formElement = document.createElement('form');\n\n const isRegexOrFunction = function (testValue) {\n return testValue instanceof RegExp || testValue instanceof Function;\n };\n\n /**\n * _parseConfig\n *\n * @param {Object} cfg optional config literal\n */\n // eslint-disable-next-line complexity\n const _parseConfig = function (cfg = {}) {\n if (CONFIG && CONFIG === cfg) {\n return;\n }\n\n /* Shield configuration object from tampering */\n if (!cfg || typeof cfg !== 'object') {\n cfg = {};\n }\n\n /* Shield configuration object from prototype pollution */\n cfg = clone(cfg);\n\n PARSER_MEDIA_TYPE =\n // eslint-disable-next-line unicorn/prefer-includes\n SUPPORTED_PARSER_MEDIA_TYPES.indexOf(cfg.PARSER_MEDIA_TYPE) === -1\n ? DEFAULT_PARSER_MEDIA_TYPE\n : cfg.PARSER_MEDIA_TYPE;\n\n // HTML tags and attributes are not case-sensitive, converting to lowercase. Keeping XHTML as is.\n transformCaseFunc =\n PARSER_MEDIA_TYPE === 'application/xhtml+xml'\n ? stringToString\n : stringToLowerCase;\n\n /* Set configuration parameters */\n ALLOWED_TAGS = objectHasOwnProperty(cfg, 'ALLOWED_TAGS')\n ? addToSet({}, cfg.ALLOWED_TAGS, transformCaseFunc)\n : DEFAULT_ALLOWED_TAGS;\n ALLOWED_ATTR = objectHasOwnProperty(cfg, 'ALLOWED_ATTR')\n ? addToSet({}, cfg.ALLOWED_ATTR, transformCaseFunc)\n : DEFAULT_ALLOWED_ATTR;\n ALLOWED_NAMESPACES = objectHasOwnProperty(cfg, 'ALLOWED_NAMESPACES')\n ? addToSet({}, cfg.ALLOWED_NAMESPACES, stringToString)\n : DEFAULT_ALLOWED_NAMESPACES;\n URI_SAFE_ATTRIBUTES = objectHasOwnProperty(cfg, 'ADD_URI_SAFE_ATTR')\n ? addToSet(\n clone(DEFAULT_URI_SAFE_ATTRIBUTES), // eslint-disable-line indent\n cfg.ADD_URI_SAFE_ATTR, // eslint-disable-line indent\n transformCaseFunc // eslint-disable-line indent\n ) // eslint-disable-line indent\n : DEFAULT_URI_SAFE_ATTRIBUTES;\n DATA_URI_TAGS = objectHasOwnProperty(cfg, 'ADD_DATA_URI_TAGS')\n ? addToSet(\n clone(DEFAULT_DATA_URI_TAGS), // eslint-disable-line indent\n cfg.ADD_DATA_URI_TAGS, // eslint-disable-line indent\n transformCaseFunc // eslint-disable-line indent\n ) // eslint-disable-line indent\n : DEFAULT_DATA_URI_TAGS;\n FORBID_CONTENTS = objectHasOwnProperty(cfg, 'FORBID_CONTENTS')\n ? addToSet({}, cfg.FORBID_CONTENTS, transformCaseFunc)\n : DEFAULT_FORBID_CONTENTS;\n FORBID_TAGS = objectHasOwnProperty(cfg, 'FORBID_TAGS')\n ? addToSet({}, cfg.FORBID_TAGS, transformCaseFunc)\n : {};\n FORBID_ATTR = objectHasOwnProperty(cfg, 'FORBID_ATTR')\n ? addToSet({}, cfg.FORBID_ATTR, transformCaseFunc)\n : {};\n USE_PROFILES = objectHasOwnProperty(cfg, 'USE_PROFILES')\n ? cfg.USE_PROFILES\n : false;\n ALLOW_ARIA_ATTR = cfg.ALLOW_ARIA_ATTR !== false; // Default true\n ALLOW_DATA_ATTR = cfg.ALLOW_DATA_ATTR !== false; // Default true\n ALLOW_UNKNOWN_PROTOCOLS = cfg.ALLOW_UNKNOWN_PROTOCOLS || false; // Default false\n ALLOW_SELF_CLOSE_IN_ATTR = cfg.ALLOW_SELF_CLOSE_IN_ATTR !== false; // Default true\n SAFE_FOR_TEMPLATES = cfg.SAFE_FOR_TEMPLATES || false; // Default false\n SAFE_FOR_XML = cfg.SAFE_FOR_XML !== false; // Default true\n WHOLE_DOCUMENT = cfg.WHOLE_DOCUMENT || false; // Default false\n RETURN_DOM = cfg.RETURN_DOM || false; // Default false\n RETURN_DOM_FRAGMENT = cfg.RETURN_DOM_FRAGMENT || false; // Default false\n RETURN_TRUSTED_TYPE = cfg.RETURN_TRUSTED_TYPE || false; // Default false\n FORCE_BODY = cfg.FORCE_BODY || false; // Default false\n SANITIZE_DOM = cfg.SANITIZE_DOM !== false; // Default true\n SANITIZE_NAMED_PROPS = cfg.SANITIZE_NAMED_PROPS || false; // Default false\n KEEP_CONTENT = cfg.KEEP_CONTENT !== false; // Default true\n IN_PLACE = cfg.IN_PLACE || false; // Default false\n IS_ALLOWED_URI = cfg.ALLOWED_URI_REGEXP || EXPRESSIONS.IS_ALLOWED_URI;\n NAMESPACE = cfg.NAMESPACE || HTML_NAMESPACE;\n CUSTOM_ELEMENT_HANDLING = cfg.CUSTOM_ELEMENT_HANDLING || {};\n if (\n cfg.CUSTOM_ELEMENT_HANDLING &&\n isRegexOrFunction(cfg.CUSTOM_ELEMENT_HANDLING.tagNameCheck)\n ) {\n CUSTOM_ELEMENT_HANDLING.tagNameCheck =\n cfg.CUSTOM_ELEMENT_HANDLING.tagNameCheck;\n }\n\n if (\n cfg.CUSTOM_ELEMENT_HANDLING &&\n isRegexOrFunction(cfg.CUSTOM_ELEMENT_HANDLING.attributeNameCheck)\n ) {\n CUSTOM_ELEMENT_HANDLING.attributeNameCheck =\n cfg.CUSTOM_ELEMENT_HANDLING.attributeNameCheck;\n }\n\n if (\n cfg.CUSTOM_ELEMENT_HANDLING &&\n typeof cfg.CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements ===\n 'boolean'\n ) {\n CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements =\n cfg.CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements;\n }\n\n if (SAFE_FOR_TEMPLATES) {\n ALLOW_DATA_ATTR = false;\n }\n\n if (RETURN_DOM_FRAGMENT) {\n RETURN_DOM = true;\n }\n\n /* Parse profile info */\n if (USE_PROFILES) {\n ALLOWED_TAGS = addToSet({}, TAGS.text);\n ALLOWED_ATTR = [];\n if (USE_PROFILES.html === true) {\n addToSet(ALLOWED_TAGS, TAGS.html);\n addToSet(ALLOWED_ATTR, ATTRS.html);\n }\n\n if (USE_PROFILES.svg === true) {\n addToSet(ALLOWED_TAGS, TAGS.svg);\n addToSet(ALLOWED_ATTR, ATTRS.svg);\n addToSet(ALLOWED_ATTR, ATTRS.xml);\n }\n\n if (USE_PROFILES.svgFilters === true) {\n addToSet(ALLOWED_TAGS, TAGS.svgFilters);\n addToSet(ALLOWED_ATTR, ATTRS.svg);\n addToSet(ALLOWED_ATTR, ATTRS.xml);\n }\n\n if (USE_PROFILES.mathMl === true) {\n addToSet(ALLOWED_TAGS, TAGS.mathMl);\n addToSet(ALLOWED_ATTR, ATTRS.mathMl);\n addToSet(ALLOWED_ATTR, ATTRS.xml);\n }\n }\n\n /* Merge configuration parameters */\n if (cfg.ADD_TAGS) {\n if (ALLOWED_TAGS === DEFAULT_ALLOWED_TAGS) {\n ALLOWED_TAGS = clone(ALLOWED_TAGS);\n }\n\n addToSet(ALLOWED_TAGS, cfg.ADD_TAGS, transformCaseFunc);\n }\n\n if (cfg.ADD_ATTR) {\n if (ALLOWED_ATTR === DEFAULT_ALLOWED_ATTR) {\n ALLOWED_ATTR = clone(ALLOWED_ATTR);\n }\n\n addToSet(ALLOWED_ATTR, cfg.ADD_ATTR, transformCaseFunc);\n }\n\n if (cfg.ADD_URI_SAFE_ATTR) {\n addToSet(URI_SAFE_ATTRIBUTES, cfg.ADD_URI_SAFE_ATTR, transformCaseFunc);\n }\n\n if (cfg.FORBID_CONTENTS) {\n if (FORBID_CONTENTS === DEFAULT_FORBID_CONTENTS) {\n FORBID_CONTENTS = clone(FORBID_CONTENTS);\n }\n\n addToSet(FORBID_CONTENTS, cfg.FORBID_CONTENTS, transformCaseFunc);\n }\n\n /* Add #text in case KEEP_CONTENT is set to true */\n if (KEEP_CONTENT) {\n ALLOWED_TAGS['#text'] = true;\n }\n\n /* Add html, head and body to ALLOWED_TAGS in case WHOLE_DOCUMENT is true */\n if (WHOLE_DOCUMENT) {\n addToSet(ALLOWED_TAGS, ['html', 'head', 'body']);\n }\n\n /* Add tbody to ALLOWED_TAGS in case tables are permitted, see #286, #365 */\n if (ALLOWED_TAGS.table) {\n addToSet(ALLOWED_TAGS, ['tbody']);\n delete FORBID_TAGS.tbody;\n }\n\n if (cfg.TRUSTED_TYPES_POLICY) {\n if (typeof cfg.TRUSTED_TYPES_POLICY.createHTML !== 'function') {\n throw typeErrorCreate(\n 'TRUSTED_TYPES_POLICY configuration option must provide a \"createHTML\" hook.'\n );\n }\n\n if (typeof cfg.TRUSTED_TYPES_POLICY.createScriptURL !== 'function') {\n throw typeErrorCreate(\n 'TRUSTED_TYPES_POLICY configuration option must provide a \"createScriptURL\" hook.'\n );\n }\n\n // Overwrite existing TrustedTypes policy.\n trustedTypesPolicy = cfg.TRUSTED_TYPES_POLICY;\n\n // Sign local variables required by `sanitize`.\n emptyHTML = trustedTypesPolicy.createHTML('');\n } else {\n // Uninitialized policy, attempt to initialize the internal dompurify policy.\n if (trustedTypesPolicy === undefined) {\n trustedTypesPolicy = _createTrustedTypesPolicy(\n trustedTypes,\n currentScript\n );\n }\n\n // If creating the internal policy succeeded sign internal variables.\n if (trustedTypesPolicy !== null && typeof emptyHTML === 'string') {\n emptyHTML = trustedTypesPolicy.createHTML('');\n }\n }\n\n // Prevent further manipulation of configuration.\n // Not available in IE8, Safari 5, etc.\n if (freeze) {\n freeze(cfg);\n }\n\n CONFIG = cfg;\n };\n\n const MATHML_TEXT_INTEGRATION_POINTS = addToSet({}, [\n 'mi',\n 'mo',\n 'mn',\n 'ms',\n 'mtext',\n ]);\n\n const HTML_INTEGRATION_POINTS = addToSet({}, ['annotation-xml']);\n\n // Certain elements are allowed in both SVG and HTML\n // namespace. We need to specify them explicitly\n // so that they don't get erroneously deleted from\n // HTML namespace.\n const COMMON_SVG_AND_HTML_ELEMENTS = addToSet({}, [\n 'title',\n 'style',\n 'font',\n 'a',\n 'script',\n ]);\n\n /* Keep track of all possible SVG and MathML tags\n * so that we can perform the namespace checks\n * correctly. */\n const ALL_SVG_TAGS = addToSet({}, [\n ...TAGS.svg,\n ...TAGS.svgFilters,\n ...TAGS.svgDisallowed,\n ]);\n const ALL_MATHML_TAGS = addToSet({}, [\n ...TAGS.mathMl,\n ...TAGS.mathMlDisallowed,\n ]);\n\n /**\n * @param {Element} element a DOM element whose namespace is being checked\n * @returns {boolean} Return false if the element has a\n * namespace that a spec-compliant parser would never\n * return. Return true otherwise.\n */\n const _checkValidNamespace = function (element) {\n let parent = getParentNode(element);\n\n // In JSDOM, if we're inside shadow DOM, then parentNode\n // can be null. We just simulate parent in this case.\n if (!parent || !parent.tagName) {\n parent = {\n namespaceURI: NAMESPACE,\n tagName: 'template',\n };\n }\n\n const tagName = stringToLowerCase(element.tagName);\n const parentTagName = stringToLowerCase(parent.tagName);\n\n if (!ALLOWED_NAMESPACES[element.namespaceURI]) {\n return false;\n }\n\n if (element.namespaceURI === SVG_NAMESPACE) {\n // The only way to switch from HTML namespace to SVG\n // is via . If it happens via any other tag, then\n // it should be killed.\n if (parent.namespaceURI === HTML_NAMESPACE) {\n return tagName === 'svg';\n }\n\n // The only way to switch from MathML to SVG is via`\n // svg if parent is either or MathML\n // text integration points.\n if (parent.namespaceURI === MATHML_NAMESPACE) {\n return (\n tagName === 'svg' &&\n (parentTagName === 'annotation-xml' ||\n MATHML_TEXT_INTEGRATION_POINTS[parentTagName])\n );\n }\n\n // We only allow elements that are defined in SVG\n // spec. All others are disallowed in SVG namespace.\n return Boolean(ALL_SVG_TAGS[tagName]);\n }\n\n if (element.namespaceURI === MATHML_NAMESPACE) {\n // The only way to switch from HTML namespace to MathML\n // is via . If it happens via any other tag, then\n // it should be killed.\n if (parent.namespaceURI === HTML_NAMESPACE) {\n return tagName === 'math';\n }\n\n // The only way to switch from SVG to MathML is via\n // and HTML integration points\n if (parent.namespaceURI === SVG_NAMESPACE) {\n return tagName === 'math' && HTML_INTEGRATION_POINTS[parentTagName];\n }\n\n // We only allow elements that are defined in MathML\n // spec. All others are disallowed in MathML namespace.\n return Boolean(ALL_MATHML_TAGS[tagName]);\n }\n\n if (element.namespaceURI === HTML_NAMESPACE) {\n // The only way to switch from SVG to HTML is via\n // HTML integration points, and from MathML to HTML\n // is via MathML text integration points\n if (\n parent.namespaceURI === SVG_NAMESPACE &&\n !HTML_INTEGRATION_POINTS[parentTagName]\n ) {\n return false;\n }\n\n if (\n parent.namespaceURI === MATHML_NAMESPACE &&\n !MATHML_TEXT_INTEGRATION_POINTS[parentTagName]\n ) {\n return false;\n }\n\n // We disallow tags that are specific for MathML\n // or SVG and should never appear in HTML namespace\n return (\n !ALL_MATHML_TAGS[tagName] &&\n (COMMON_SVG_AND_HTML_ELEMENTS[tagName] || !ALL_SVG_TAGS[tagName])\n );\n }\n\n // For XHTML and XML documents that support custom namespaces\n if (\n PARSER_MEDIA_TYPE === 'application/xhtml+xml' &&\n ALLOWED_NAMESPACES[element.namespaceURI]\n ) {\n return true;\n }\n\n // The code should never reach this place (this means\n // that the element somehow got namespace that is not\n // HTML, SVG, MathML or allowed via ALLOWED_NAMESPACES).\n // Return false just in case.\n return false;\n };\n\n /**\n * _forceRemove\n *\n * @param {Node} node a DOM node\n */\n const _forceRemove = function (node) {\n arrayPush(DOMPurify.removed, { element: node });\n\n try {\n // eslint-disable-next-line unicorn/prefer-dom-node-remove\n getParentNode(node).removeChild(node);\n } catch (_) {\n remove(node);\n }\n };\n\n /**\n * _removeAttribute\n *\n * @param {String} name an Attribute name\n * @param {Node} node a DOM node\n */\n const _removeAttribute = function (name, node) {\n try {\n arrayPush(DOMPurify.removed, {\n attribute: node.getAttributeNode(name),\n from: node,\n });\n } catch (_) {\n arrayPush(DOMPurify.removed, {\n attribute: null,\n from: node,\n });\n }\n\n node.removeAttribute(name);\n\n // We void attribute values for unremovable \"is\"\" attributes\n if (name === 'is' && !ALLOWED_ATTR[name]) {\n if (RETURN_DOM || RETURN_DOM_FRAGMENT) {\n try {\n _forceRemove(node);\n } catch (_) {}\n } else {\n try {\n node.setAttribute(name, '');\n } catch (_) {}\n }\n }\n };\n\n /**\n * _initDocument\n *\n * @param {String} dirty a string of dirty markup\n * @return {Document} a DOM, filled with the dirty markup\n */\n const _initDocument = function (dirty) {\n /* Create a HTML document */\n let doc = null;\n let leadingWhitespace = null;\n\n if (FORCE_BODY) {\n dirty = '' + dirty;\n } else {\n /* If FORCE_BODY isn't used, leading whitespace needs to be preserved manually */\n const matches = stringMatch(dirty, /^[\\r\\n\\t ]+/);\n leadingWhitespace = matches && matches[0];\n }\n\n if (\n PARSER_MEDIA_TYPE === 'application/xhtml+xml' &&\n NAMESPACE === HTML_NAMESPACE\n ) {\n // Root of XHTML doc must contain xmlns declaration (see https://www.w3.org/TR/xhtml1/normative.html#strict)\n dirty =\n ' ' +\n dirty +\n '';\n }\n\n const dirtyPayload = trustedTypesPolicy\n ? trustedTypesPolicy.createHTML(dirty)\n : dirty;\n /*\n * Use the DOMParser API by default, fallback later if needs be\n * DOMParser not work for svg when has multiple root element.\n */\n if (NAMESPACE === HTML_NAMESPACE) {\n try {\n doc = new DOMParser().parseFromString(dirtyPayload, PARSER_MEDIA_TYPE);\n } catch (_) {}\n }\n\n /* Use createHTMLDocument in case DOMParser is not available */\n if (!doc || !doc.documentElement) {\n doc = implementation.createDocument(NAMESPACE, 'template', null);\n try {\n doc.documentElement.innerHTML = IS_EMPTY_INPUT\n ? emptyHTML\n : dirtyPayload;\n } catch (_) {\n // Syntax error if dirtyPayload is invalid xml\n }\n }\n\n const body = doc.body || doc.documentElement;\n\n if (dirty && leadingWhitespace) {\n body.insertBefore(\n document.createTextNode(leadingWhitespace),\n body.childNodes[0] || null\n );\n }\n\n /* Work on whole document or just its body */\n if (NAMESPACE === HTML_NAMESPACE) {\n return getElementsByTagName.call(\n doc,\n WHOLE_DOCUMENT ? 'html' : 'body'\n )[0];\n }\n\n return WHOLE_DOCUMENT ? doc.documentElement : body;\n };\n\n /**\n * Creates a NodeIterator object that you can use to traverse filtered lists of nodes or elements in a document.\n *\n * @param {Node} root The root element or node to start traversing on.\n * @return {NodeIterator} The created NodeIterator\n */\n const _createNodeIterator = function (root) {\n return createNodeIterator.call(\n root.ownerDocument || root,\n root,\n // eslint-disable-next-line no-bitwise\n NodeFilter.SHOW_ELEMENT |\n NodeFilter.SHOW_COMMENT |\n NodeFilter.SHOW_TEXT |\n NodeFilter.SHOW_PROCESSING_INSTRUCTION |\n NodeFilter.SHOW_CDATA_SECTION,\n null\n );\n };\n\n /**\n * _isClobbered\n *\n * @param {Node} elm element to check for clobbering attacks\n * @return {Boolean} true if clobbered, false if safe\n */\n const _isClobbered = function (elm) {\n return (\n elm instanceof HTMLFormElement &&\n (typeof elm.nodeName !== 'string' ||\n typeof elm.textContent !== 'string' ||\n typeof elm.removeChild !== 'function' ||\n !(elm.attributes instanceof NamedNodeMap) ||\n typeof elm.removeAttribute !== 'function' ||\n typeof elm.setAttribute !== 'function' ||\n typeof elm.namespaceURI !== 'string' ||\n typeof elm.insertBefore !== 'function' ||\n typeof elm.hasChildNodes !== 'function')\n );\n };\n\n /**\n * Checks whether the given object is a DOM node.\n *\n * @param {Node} object object to check whether it's a DOM node\n * @return {Boolean} true is object is a DOM node\n */\n const _isNode = function (object) {\n return typeof Node === 'function' && object instanceof Node;\n };\n\n /**\n * _executeHook\n * Execute user configurable hooks\n *\n * @param {String} entryPoint Name of the hook's entry point\n * @param {Node} currentNode node to work on with the hook\n * @param {Object} data additional hook parameters\n */\n const _executeHook = function (entryPoint, currentNode, data) {\n if (!hooks[entryPoint]) {\n return;\n }\n\n arrayForEach(hooks[entryPoint], (hook) => {\n hook.call(DOMPurify, currentNode, data, CONFIG);\n });\n };\n\n /**\n * _sanitizeElements\n *\n * @protect nodeName\n * @protect textContent\n * @protect removeChild\n *\n * @param {Node} currentNode to check for permission to exist\n * @return {Boolean} true if node was killed, false if left alive\n */\n const _sanitizeElements = function (currentNode) {\n let content = null;\n\n /* Execute a hook if present */\n _executeHook('beforeSanitizeElements', currentNode, null);\n\n /* Check if element is clobbered or can clobber */\n if (_isClobbered(currentNode)) {\n _forceRemove(currentNode);\n return true;\n }\n\n /* Now let's check the element's type and name */\n const tagName = transformCaseFunc(currentNode.nodeName);\n\n /* Execute a hook if present */\n _executeHook('uponSanitizeElement', currentNode, {\n tagName,\n allowedTags: ALLOWED_TAGS,\n });\n\n /* Detect mXSS attempts abusing namespace confusion */\n if (\n currentNode.hasChildNodes() &&\n !_isNode(currentNode.firstElementChild) &&\n regExpTest(/<[/\\w]/g, currentNode.innerHTML) &&\n regExpTest(/<[/\\w]/g, currentNode.textContent)\n ) {\n _forceRemove(currentNode);\n return true;\n }\n\n /* Remove any occurrence of processing instructions */\n if (currentNode.nodeType === NODE_TYPE.progressingInstruction) {\n _forceRemove(currentNode);\n return true;\n }\n\n /* Remove any kind of possibly harmful comments */\n if (\n SAFE_FOR_XML &&\n currentNode.nodeType === NODE_TYPE.comment &&\n regExpTest(/<[/\\w]/g, currentNode.data)\n ) {\n _forceRemove(currentNode);\n return true;\n }\n\n /* Remove element if anything forbids its presence */\n if (!ALLOWED_TAGS[tagName] || FORBID_TAGS[tagName]) {\n /* Check if we have a custom element to handle */\n if (!FORBID_TAGS[tagName] && _isBasicCustomElement(tagName)) {\n if (\n CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof RegExp &&\n regExpTest(CUSTOM_ELEMENT_HANDLING.tagNameCheck, tagName)\n ) {\n return false;\n }\n\n if (\n CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof Function &&\n CUSTOM_ELEMENT_HANDLING.tagNameCheck(tagName)\n ) {\n return false;\n }\n }\n\n /* Keep content except for bad-listed elements */\n if (KEEP_CONTENT && !FORBID_CONTENTS[tagName]) {\n const parentNode = getParentNode(currentNode) || currentNode.parentNode;\n const childNodes = getChildNodes(currentNode) || currentNode.childNodes;\n\n if (childNodes && parentNode) {\n const childCount = childNodes.length;\n\n for (let i = childCount - 1; i >= 0; --i) {\n const childClone = cloneNode(childNodes[i], true);\n childClone.__removalCount = (currentNode.__removalCount || 0) + 1;\n parentNode.insertBefore(childClone, getNextSibling(currentNode));\n }\n }\n }\n\n _forceRemove(currentNode);\n return true;\n }\n\n /* Check whether element has a valid namespace */\n if (currentNode instanceof Element && !_checkValidNamespace(currentNode)) {\n _forceRemove(currentNode);\n return true;\n }\n\n /* Make sure that older browsers don't get fallback-tag mXSS */\n if (\n (tagName === 'noscript' ||\n tagName === 'noembed' ||\n tagName === 'noframes') &&\n regExpTest(/<\\/no(script|embed|frames)/i, currentNode.innerHTML)\n ) {\n _forceRemove(currentNode);\n return true;\n }\n\n /* Sanitize element content to be template-safe */\n if (SAFE_FOR_TEMPLATES && currentNode.nodeType === NODE_TYPE.text) {\n /* Get the element's text content */\n content = currentNode.textContent;\n\n arrayForEach([MUSTACHE_EXPR, ERB_EXPR, TMPLIT_EXPR], (expr) => {\n content = stringReplace(content, expr, ' ');\n });\n\n if (currentNode.textContent !== content) {\n arrayPush(DOMPurify.removed, { element: currentNode.cloneNode() });\n currentNode.textContent = content;\n }\n }\n\n /* Execute a hook if present */\n _executeHook('afterSanitizeElements', currentNode, null);\n\n return false;\n };\n\n /**\n * _isValidAttribute\n *\n * @param {string} lcTag Lowercase tag name of containing element.\n * @param {string} lcName Lowercase attribute name.\n * @param {string} value Attribute value.\n * @return {Boolean} Returns true if `value` is valid, otherwise false.\n */\n // eslint-disable-next-line complexity\n const _isValidAttribute = function (lcTag, lcName, value) {\n /* Make sure attribute cannot clobber */\n if (\n SANITIZE_DOM &&\n (lcName === 'id' || lcName === 'name') &&\n (value in document || value in formElement)\n ) {\n return false;\n }\n\n /* Allow valid data-* attributes: At least one character after \"-\"\n (https://html.spec.whatwg.org/multipage/dom.html#embedding-custom-non-visible-data-with-the-data-*-attributes)\n XML-compatible (https://html.spec.whatwg.org/multipage/infrastructure.html#xml-compatible and http://www.w3.org/TR/xml/#d0e804)\n We don't need to check the value; it's always URI safe. */\n if (\n ALLOW_DATA_ATTR &&\n !FORBID_ATTR[lcName] &&\n regExpTest(DATA_ATTR, lcName)\n ) {\n // This attribute is safe\n } else if (ALLOW_ARIA_ATTR && regExpTest(ARIA_ATTR, lcName)) {\n // This attribute is safe\n /* Otherwise, check the name is permitted */\n } else if (!ALLOWED_ATTR[lcName] || FORBID_ATTR[lcName]) {\n if (\n // First condition does a very basic check if a) it's basically a valid custom element tagname AND\n // b) if the tagName passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.tagNameCheck\n // and c) if the attribute name passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.attributeNameCheck\n (_isBasicCustomElement(lcTag) &&\n ((CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof RegExp &&\n regExpTest(CUSTOM_ELEMENT_HANDLING.tagNameCheck, lcTag)) ||\n (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof Function &&\n CUSTOM_ELEMENT_HANDLING.tagNameCheck(lcTag))) &&\n ((CUSTOM_ELEMENT_HANDLING.attributeNameCheck instanceof RegExp &&\n regExpTest(CUSTOM_ELEMENT_HANDLING.attributeNameCheck, lcName)) ||\n (CUSTOM_ELEMENT_HANDLING.attributeNameCheck instanceof Function &&\n CUSTOM_ELEMENT_HANDLING.attributeNameCheck(lcName)))) ||\n // Alternative, second condition checks if it's an `is`-attribute, AND\n // the value passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.tagNameCheck\n (lcName === 'is' &&\n CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements &&\n ((CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof RegExp &&\n regExpTest(CUSTOM_ELEMENT_HANDLING.tagNameCheck, value)) ||\n (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof Function &&\n CUSTOM_ELEMENT_HANDLING.tagNameCheck(value))))\n ) {\n // If user has supplied a regexp or function in CUSTOM_ELEMENT_HANDLING.tagNameCheck, we need to also allow derived custom elements using the same tagName test.\n // Additionally, we need to allow attributes passing the CUSTOM_ELEMENT_HANDLING.attributeNameCheck user has configured, as custom elements can define these at their own discretion.\n } else {\n return false;\n }\n /* Check value is safe. First, is attr inert? If so, is safe */\n } else if (URI_SAFE_ATTRIBUTES[lcName]) {\n // This attribute is safe\n /* Check no script, data or unknown possibly unsafe URI\n unless we know URI values are safe for that attribute */\n } else if (\n regExpTest(IS_ALLOWED_URI, stringReplace(value, ATTR_WHITESPACE, ''))\n ) {\n // This attribute is safe\n /* Keep image data URIs alive if src/xlink:href is allowed */\n /* Further prevent gadget XSS for dynamically built script tags */\n } else if (\n (lcName === 'src' || lcName === 'xlink:href' || lcName === 'href') &&\n lcTag !== 'script' &&\n stringIndexOf(value, 'data:') === 0 &&\n DATA_URI_TAGS[lcTag]\n ) {\n // This attribute is safe\n /* Allow unknown protocols: This provides support for links that\n are handled by protocol handlers which may be unknown ahead of\n time, e.g. fb:, spotify: */\n } else if (\n ALLOW_UNKNOWN_PROTOCOLS &&\n !regExpTest(IS_SCRIPT_OR_DATA, stringReplace(value, ATTR_WHITESPACE, ''))\n ) {\n // This attribute is safe\n /* Check for binary attributes */\n } else if (value) {\n return false;\n } else {\n // Binary attributes are safe at this point\n /* Anything else, presume unsafe, do not add it back */\n }\n\n return true;\n };\n\n /**\n * _isBasicCustomElement\n * checks if at least one dash is included in tagName, and it's not the first char\n * for more sophisticated checking see https://github.com/sindresorhus/validate-element-name\n *\n * @param {string} tagName name of the tag of the node to sanitize\n * @returns {boolean} Returns true if the tag name meets the basic criteria for a custom element, otherwise false.\n */\n const _isBasicCustomElement = function (tagName) {\n return tagName !== 'annotation-xml' && stringMatch(tagName, CUSTOM_ELEMENT);\n };\n\n /**\n * _sanitizeAttributes\n *\n * @protect attributes\n * @protect nodeName\n * @protect removeAttribute\n * @protect setAttribute\n *\n * @param {Node} currentNode to sanitize\n */\n const _sanitizeAttributes = function (currentNode) {\n /* Execute a hook if present */\n _executeHook('beforeSanitizeAttributes', currentNode, null);\n\n const { attributes } = currentNode;\n\n /* Check if we have attributes; if not we might have a text node */\n if (!attributes) {\n return;\n }\n\n const hookEvent = {\n attrName: '',\n attrValue: '',\n keepAttr: true,\n allowedAttributes: ALLOWED_ATTR,\n };\n let l = attributes.length;\n\n /* Go backwards over all attributes; safely remove bad ones */\n while (l--) {\n const attr = attributes[l];\n const { name, namespaceURI, value: attrValue } = attr;\n const lcName = transformCaseFunc(name);\n\n let value = name === 'value' ? attrValue : stringTrim(attrValue);\n\n /* Execute a hook if present */\n hookEvent.attrName = lcName;\n hookEvent.attrValue = value;\n hookEvent.keepAttr = true;\n hookEvent.forceKeepAttr = undefined; // Allows developers to see this is a property they can set\n _executeHook('uponSanitizeAttribute', currentNode, hookEvent);\n value = hookEvent.attrValue;\n\n /* Did the hooks approve of the attribute? */\n if (hookEvent.forceKeepAttr) {\n continue;\n }\n\n /* Remove attribute */\n _removeAttribute(name, currentNode);\n\n /* Did the hooks approve of the attribute? */\n if (!hookEvent.keepAttr) {\n continue;\n }\n\n /* Work around a security issue in jQuery 3.0 */\n if (!ALLOW_SELF_CLOSE_IN_ATTR && regExpTest(/\\/>/i, value)) {\n _removeAttribute(name, currentNode);\n continue;\n }\n\n /* Sanitize attribute content to be template-safe */\n if (SAFE_FOR_TEMPLATES) {\n arrayForEach([MUSTACHE_EXPR, ERB_EXPR, TMPLIT_EXPR], (expr) => {\n value = stringReplace(value, expr, ' ');\n });\n }\n\n /* Is `value` valid for this attribute? */\n const lcTag = transformCaseFunc(currentNode.nodeName);\n if (!_isValidAttribute(lcTag, lcName, value)) {\n continue;\n }\n\n /* Full DOM Clobbering protection via namespace isolation,\n * Prefix id and name attributes with `user-content-`\n */\n if (SANITIZE_NAMED_PROPS && (lcName === 'id' || lcName === 'name')) {\n // Remove the attribute with this value\n _removeAttribute(name, currentNode);\n\n // Prefix the value and later re-create the attribute with the sanitized value\n value = SANITIZE_NAMED_PROPS_PREFIX + value;\n }\n\n /* Work around a security issue with comments inside attributes */\n if (SAFE_FOR_XML && regExpTest(/((--!?|])>)|<\\/(style|title)/i, value)) {\n _removeAttribute(name, currentNode);\n continue;\n }\n\n /* Handle attributes that require Trusted Types */\n if (\n trustedTypesPolicy &&\n typeof trustedTypes === 'object' &&\n typeof trustedTypes.getAttributeType === 'function'\n ) {\n if (namespaceURI) {\n /* Namespaces are not yet supported, see https://bugs.chromium.org/p/chromium/issues/detail?id=1305293 */\n } else {\n switch (trustedTypes.getAttributeType(lcTag, lcName)) {\n case 'TrustedHTML': {\n value = trustedTypesPolicy.createHTML(value);\n break;\n }\n\n case 'TrustedScriptURL': {\n value = trustedTypesPolicy.createScriptURL(value);\n break;\n }\n\n default: {\n break;\n }\n }\n }\n }\n\n /* Handle invalid data-* attribute set by try-catching it */\n try {\n if (namespaceURI) {\n currentNode.setAttributeNS(namespaceURI, name, value);\n } else {\n /* Fallback to setAttribute() for browser-unrecognized namespaces e.g. \"x-schema\". */\n currentNode.setAttribute(name, value);\n }\n\n if (_isClobbered(currentNode)) {\n _forceRemove(currentNode);\n } else {\n arrayPop(DOMPurify.removed);\n }\n } catch (_) {}\n }\n\n /* Execute a hook if present */\n _executeHook('afterSanitizeAttributes', currentNode, null);\n };\n\n /**\n * _sanitizeShadowDOM\n *\n * @param {DocumentFragment} fragment to iterate over recursively\n */\n const _sanitizeShadowDOM = function (fragment) {\n let shadowNode = null;\n const shadowIterator = _createNodeIterator(fragment);\n\n /* Execute a hook if present */\n _executeHook('beforeSanitizeShadowDOM', fragment, null);\n\n while ((shadowNode = shadowIterator.nextNode())) {\n /* Execute a hook if present */\n _executeHook('uponSanitizeShadowNode', shadowNode, null);\n\n /* Sanitize tags and elements */\n if (_sanitizeElements(shadowNode)) {\n continue;\n }\n\n /* Deep shadow DOM detected */\n if (shadowNode.content instanceof DocumentFragment) {\n _sanitizeShadowDOM(shadowNode.content);\n }\n\n /* Check attributes, sanitize if necessary */\n _sanitizeAttributes(shadowNode);\n }\n\n /* Execute a hook if present */\n _executeHook('afterSanitizeShadowDOM', fragment, null);\n };\n\n /**\n * Sanitize\n * Public method providing core sanitation functionality\n *\n * @param {String|Node} dirty string or DOM node\n * @param {Object} cfg object\n */\n // eslint-disable-next-line complexity\n DOMPurify.sanitize = function (dirty, cfg = {}) {\n let body = null;\n let importedNode = null;\n let currentNode = null;\n let returnNode = null;\n /* Make sure we have a string to sanitize.\n DO NOT return early, as this will return the wrong type if\n the user has requested a DOM object rather than a string */\n IS_EMPTY_INPUT = !dirty;\n if (IS_EMPTY_INPUT) {\n dirty = '';\n }\n\n /* Stringify, in case dirty is an object */\n if (typeof dirty !== 'string' && !_isNode(dirty)) {\n if (typeof dirty.toString === 'function') {\n dirty = dirty.toString();\n if (typeof dirty !== 'string') {\n throw typeErrorCreate('dirty is not a string, aborting');\n }\n } else {\n throw typeErrorCreate('toString is not a function');\n }\n }\n\n /* Return dirty HTML if DOMPurify cannot run */\n if (!DOMPurify.isSupported) {\n return dirty;\n }\n\n /* Assign config vars */\n if (!SET_CONFIG) {\n _parseConfig(cfg);\n }\n\n /* Clean up removed elements */\n DOMPurify.removed = [];\n\n /* Check if dirty is correctly typed for IN_PLACE */\n if (typeof dirty === 'string') {\n IN_PLACE = false;\n }\n\n if (IN_PLACE) {\n /* Do some early pre-sanitization to avoid unsafe root nodes */\n if (dirty.nodeName) {\n const tagName = transformCaseFunc(dirty.nodeName);\n if (!ALLOWED_TAGS[tagName] || FORBID_TAGS[tagName]) {\n throw typeErrorCreate(\n 'root node is forbidden and cannot be sanitized in-place'\n );\n }\n }\n } else if (dirty instanceof Node) {\n /* If dirty is a DOM element, append to an empty document to avoid\n elements being stripped by the parser */\n body = _initDocument('');\n importedNode = body.ownerDocument.importNode(dirty, true);\n if (\n importedNode.nodeType === NODE_TYPE.element &&\n importedNode.nodeName === 'BODY'\n ) {\n /* Node is already a body, use as is */\n body = importedNode;\n } else if (importedNode.nodeName === 'HTML') {\n body = importedNode;\n } else {\n // eslint-disable-next-line unicorn/prefer-dom-node-append\n body.appendChild(importedNode);\n }\n } else {\n /* Exit directly if we have nothing to do */\n if (\n !RETURN_DOM &&\n !SAFE_FOR_TEMPLATES &&\n !WHOLE_DOCUMENT &&\n // eslint-disable-next-line unicorn/prefer-includes\n dirty.indexOf('<') === -1\n ) {\n return trustedTypesPolicy && RETURN_TRUSTED_TYPE\n ? trustedTypesPolicy.createHTML(dirty)\n : dirty;\n }\n\n /* Initialize the document to work on */\n body = _initDocument(dirty);\n\n /* Check we have a DOM node from the data */\n if (!body) {\n return RETURN_DOM ? null : RETURN_TRUSTED_TYPE ? emptyHTML : '';\n }\n }\n\n /* Remove first element node (ours) if FORCE_BODY is set */\n if (body && FORCE_BODY) {\n _forceRemove(body.firstChild);\n }\n\n /* Get node iterator */\n const nodeIterator = _createNodeIterator(IN_PLACE ? dirty : body);\n\n /* Now start iterating over the created document */\n while ((currentNode = nodeIterator.nextNode())) {\n /* Sanitize tags and elements */\n if (_sanitizeElements(currentNode)) {\n continue;\n }\n\n /* Shadow DOM detected, sanitize it */\n if (currentNode.content instanceof DocumentFragment) {\n _sanitizeShadowDOM(currentNode.content);\n }\n\n /* Check attributes, sanitize if necessary */\n _sanitizeAttributes(currentNode);\n }\n\n /* If we sanitized `dirty` in-place, return it. */\n if (IN_PLACE) {\n return dirty;\n }\n\n /* Return sanitized string or DOM */\n if (RETURN_DOM) {\n if (RETURN_DOM_FRAGMENT) {\n returnNode = createDocumentFragment.call(body.ownerDocument);\n\n while (body.firstChild) {\n // eslint-disable-next-line unicorn/prefer-dom-node-append\n returnNode.appendChild(body.firstChild);\n }\n } else {\n returnNode = body;\n }\n\n if (ALLOWED_ATTR.shadowroot || ALLOWED_ATTR.shadowrootmode) {\n /*\n AdoptNode() is not used because internal state is not reset\n (e.g. the past names map of a HTMLFormElement), this is safe\n in theory but we would rather not risk another attack vector.\n The state that is cloned by importNode() is explicitly defined\n by the specs.\n */\n returnNode = importNode.call(originalDocument, returnNode, true);\n }\n\n return returnNode;\n }\n\n let serializedHTML = WHOLE_DOCUMENT ? body.outerHTML : body.innerHTML;\n\n /* Serialize doctype if allowed */\n if (\n WHOLE_DOCUMENT &&\n ALLOWED_TAGS['!doctype'] &&\n body.ownerDocument &&\n body.ownerDocument.doctype &&\n body.ownerDocument.doctype.name &&\n regExpTest(EXPRESSIONS.DOCTYPE_NAME, body.ownerDocument.doctype.name)\n ) {\n serializedHTML =\n '\\n' + serializedHTML;\n }\n\n /* Sanitize final string template-safe */\n if (SAFE_FOR_TEMPLATES) {\n arrayForEach([MUSTACHE_EXPR, ERB_EXPR, TMPLIT_EXPR], (expr) => {\n serializedHTML = stringReplace(serializedHTML, expr, ' ');\n });\n }\n\n return trustedTypesPolicy && RETURN_TRUSTED_TYPE\n ? trustedTypesPolicy.createHTML(serializedHTML)\n : serializedHTML;\n };\n\n /**\n * Public method to set the configuration once\n * setConfig\n *\n * @param {Object} cfg configuration object\n */\n DOMPurify.setConfig = function (cfg = {}) {\n _parseConfig(cfg);\n SET_CONFIG = true;\n };\n\n /**\n * Public method to remove the configuration\n * clearConfig\n *\n */\n DOMPurify.clearConfig = function () {\n CONFIG = null;\n SET_CONFIG = false;\n };\n\n /**\n * Public method to check if an attribute value is valid.\n * Uses last set config, if any. Otherwise, uses config defaults.\n * isValidAttribute\n *\n * @param {String} tag Tag name of containing element.\n * @param {String} attr Attribute name.\n * @param {String} value Attribute value.\n * @return {Boolean} Returns true if `value` is valid. 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"1.0.15", "dev": true, @@ -17498,6 +17688,12 @@ } } }, + "tslib": { + "version": "2.7.0", + "resolved": "https://registry.npmjs.org/tslib/-/tslib-2.7.0.tgz", + "integrity": "sha512-gLXCKdN1/j47AiHiOkJN69hJmcbGTHI0ImLmbYLHykhgeN0jVGola9yVjFgzCUklsZQMW55o+dW7IXv3RCXDzA==", + "dev": true + }, "type-check": { "version": "0.3.2", "resolved": "https://registry.npmjs.org/type-check/-/type-check-0.3.2.tgz", @@ -17537,9 +17733,9 @@ "dev": true }, "typescript": { - "version": "5.0.4", - "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.0.4.tgz", - "integrity": "sha512-cW9T5W9xY37cc+jfEnaUvX91foxtHkza3Nw3wkoF4sSlKn0MONdkdEndig/qPBWXNkmplh3NzayQzCiHM4/hqw==", + "version": "5.6.3", + "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.6.3.tgz", + "integrity": "sha512-hjcS1mhfuyi4WW8IWtjP7brDrG2cuDZukyrYrSauoXGNgx0S7zceP07adYkJycEr56BOUTNPzbInooiN3fn1qw==", "dev": true }, "ua-parser-js": { diff --git a/package.json b/package.json index 5cd4e5ba0..0b70918c3 100644 --- a/package.json +++ b/package.json @@ -1,17 +1,21 @@ { "scripts": { - "lint": "xo src/*.js", + "lint": "xo src/*.ts", "format": "npm run format:js && npm run format:md", "format:md": "prettier --write --parser markdown '**/*.md'", - "format:js": "prettier --write '{src,demos,scripts,test,website}/*.js'", + "format:js": "prettier --write '{src,demos,scripts,test,website}/*.{js,ts}'", "commit-amend-build": "scripts/commit-amend-build.sh", "prebuild": "rimraf dist/**", "dev": "cross-env NODE_ENV=development BABEL_ENV=rollup rollup -w -c -o dist/purify.js", - "build": "rollup -c", + "build": "run-s build:types build:rollup build:fix-cjs-types build:cleanup", + "build:types": "tsc --outDir dist/types --declaration --emitDeclarationOnly", + "build:rollup": "rollup -c", + "build:fix-cjs-types": "node ./scripts/fix-cjs-types.js", "build:umd": "rollup -c -f umd -o dist/purify.js", "build:umd:min": "rollup -c -f umd -o dist/purify.min.js -p terser", "build:es": "rollup -c -f es -o dist/purify.es.mjs", "build:cjs": "rollup -c -f cjs -o dist/purify.cjs.js", + "build:cleanup": "rimraf dist/types", "test:jsdom": "cross-env NODE_ENV=test BABEL_ENV=rollup node test/jsdom-node-runner --dot", "test:karma": "cross-env NODE_ENV=test BABEL_ENV=rollup karma start test/karma.conf.js --log-level warn ", "test:ci": "cross-env NODE_ENV=test BABEL_ENV=rollup npm run test:jsdom && npm run test:karma -- --log-level error --reporters dots --single-run --shouldTestOnBrowserStack=\"${TEST_BROWSERSTACK}\" --shouldProbeOnly=\"${TEST_PROBE_ONLY}\"", @@ -19,9 +23,21 @@ }, "main": "./dist/purify.cjs.js", "module": "./dist/purify.es.mjs", - "es2020": "./dist/purify.es.mjs", "browser": "./dist/purify.js", "production": "./dist/purify.min.js", + "types": "./dist/purify.cjs.d.ts", + "exports": { + ".": { + "require": { + "types": "./dist/purify.cjs.d.ts", + "default": "./dist/purify.cjs.js" + }, + "import": { + "types": "./dist/purify.es.d.mts", + "default": "./dist/purify.es.mjs" + } + } + }, "files": [ "dist" ], @@ -55,7 +71,21 @@ { "properties": "never" } - ] + ], + "@typescript-eslint/ban-types": 0, + "@typescript-eslint/consistent-type-definitions": 0, + "@typescript-eslint/indent": 0, + "@typescript-eslint/naming-convention": 0, + "@typescript-eslint/no-throw-literal": 0, + "@typescript-eslint/no-unnecessary-boolean-literal-compare": 0, + "@typescript-eslint/no-unsafe-argument": 0, + "@typescript-eslint/no-unsafe-assignment": 0, + "@typescript-eslint/no-unsafe-call": 0, + "@typescript-eslint/no-unsafe-return": 0, + "@typescript-eslint/prefer-includes": 0, + "@typescript-eslint/prefer-optional-chain": 0, + "@typescript-eslint/prefer-nullish-coalescing": 0, + "@typescript-eslint/restrict-plus-operands": 0 }, "globals": [ "window", @@ -65,11 +95,12 @@ "devDependencies": { "@babel/core": "^7.17.8", "@babel/preset-env": "^7.16.11", - "@rollup/plugin-babel": "^5.3.1", - "@rollup/plugin-node-resolve": "^13.1.3", - "@rollup/plugin-replace": "^4.0.0", - "@types/dompurify": "^2.3.3", + "@rollup/plugin-babel": "^6.0.4", + "@rollup/plugin-node-resolve": "^15.3.0", + "@rollup/plugin-replace": "^6.0.1", + "@rollup/plugin-terser": "^0.4.4", "@types/estree": "^1.0.0", + "@types/trusted-types": "^2.0.7", "cross-env": "^7.0.3", "eslint-config-prettier": "^8.5.0", "eslint-plugin-prettier": "^4.0.0", @@ -89,9 +120,12 @@ "qunit": "^2.4.1", "qunit-tap": "^1.5.0", "rimraf": "^3.0.2", - "rollup": "^2.70.1", - "rollup-plugin-includepaths": "^0.2.3", - "rollup-plugin-terser": "^7.0.2", + "rollup": "^3.29.5", + "rollup-plugin-dts": "^6.1.1", + "rollup-plugin-includepaths": "^0.2.4", + "rollup-plugin-typescript2": "^0.36.0", + "tslib": "^2.7.0", + "typescript": "^5.6.3", "xo": "^0.54.1" }, "resolutions": { @@ -99,7 +133,7 @@ }, "name": "dompurify", "description": "DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. It's written in JavaScript and works in all modern browsers (Safari, Opera (15+), Internet Explorer (10+), Firefox and Chrome - as well as almost anything else using Blink or WebKit). DOMPurify is written by security people who have vast background in web attacks and XSS. Fear not.", - "version": "3.1.7", + "version": "3.2.0", "directories": { "test": "test" }, diff --git a/rollup.config.js b/rollup.config.js index 6b6ac4853..a63989229 100644 --- a/rollup.config.js +++ b/rollup.config.js @@ -1,8 +1,11 @@ const fs = require('fs'); +const { DEFAULT_EXTENSIONS } = require('@babel/core'); const babel = require('@rollup/plugin-babel').babel; const nodeResolve = require('@rollup/plugin-node-resolve').nodeResolve; const replace = require('@rollup/plugin-replace'); -const { terser } = require('rollup-plugin-terser'); +const terser = require('@rollup/plugin-terser'); +const typescript = require('rollup-plugin-typescript2'); +const { dts } = require('rollup-plugin-dts'); const pkg = require('./package.json'); const env = process.env.NODE_ENV; @@ -19,48 +22,76 @@ const commonOutputConfig = { exports: 'default', }; -const config = { - input: 'src/purify.js', - external: [], - output: [ - { - ...commonOutputConfig, - file: pkg.browser, - format: 'umd', - }, - { - ...commonOutputConfig, - file: pkg.production, - format: 'umd', - plugins: event === 'build' ? [terser()] : [], - }, - { - ...commonOutputConfig, - file: pkg.module, - format: 'es', - }, - { - ...commonOutputConfig, - file: pkg.main, - format: 'cjs', - }, - ], - plugins: [ - babel({ - // It is recommended to configure this option explicitly (even if with its default value) so an informed decision is taken on how those babel helpers are inserted into the code. - // Ref: https://github.com/rollup/plugins/tree/master/packages/babel#babelhelpers - babelHelpers: 'bundled', - exclude: ['**/node_modules/**'], - }), - nodeResolve(), - replace({ - preventAssignment: true, - values: { - 'process.env.NODE_ENV': JSON.stringify(env), - VERSION: `'${version}'`, +const config = [ + { + input: 'src/purify.ts', + external: [], + output: [ + { + ...commonOutputConfig, + file: pkg.browser, + format: 'umd', }, - }), - ], -}; + { + ...commonOutputConfig, + file: pkg.production, + format: 'umd', + plugins: event === 'build' ? [terser()] : [], + }, + { + ...commonOutputConfig, + file: pkg.module, + format: 'es', + }, + { + ...commonOutputConfig, + file: pkg.main, + format: 'cjs', + }, + ], + plugins: [ + typescript({ + clean: true, + }), + babel({ + // It is recommended to configure this option explicitly (even if with its default value) so an informed decision is taken on how those babel helpers are inserted into the code. + // Ref: https://github.com/rollup/plugins/tree/master/packages/babel#babelhelpers + babelHelpers: 'bundled', + exclude: ['**/node_modules/**'], + extensions: [...DEFAULT_EXTENSIONS, '.ts'], + }), + nodeResolve(), + replace({ + preventAssignment: true, + values: { + 'process.env.NODE_ENV': JSON.stringify(env), + VERSION: `'${version}'`, + }, + }), + ], + }, + { + input: './dist/types/purify.d.ts', + output: [ + { + file: pkg.module.replace(/\.mjs$/, '.d.mts'), + format: 'es', + banner: commonOutputConfig.banner, + }, + ], + plugins: [dts()], + }, + { + input: './dist/types/purify.d.ts', + output: [ + { + file: pkg.main.replace(/\.js$/, '.d.ts'), + format: 'cjs', + banner: commonOutputConfig.banner, + }, + ], + plugins: [dts()], + }, +]; module.exports = config; diff --git a/scripts/commit-amend-build.sh b/scripts/commit-amend-build.sh index e7c753f0c..b4f84c809 100755 --- a/scripts/commit-amend-build.sh +++ b/scripts/commit-amend-build.sh @@ -1,3 +1,3 @@ echo "# Amending minified assets to HEAD" -git add ./dist/purify.js ./dist/purify.js.map ./dist/purify.min.js ./dist/purify.min.js.map ./dist/purify.cjs.js ./dist/purify.cjs.js.map ./dist/purify.es.mjs ./dist/purify.es.mjs.map +git add ./dist/purify.js ./dist/purify.js.map ./dist/purify.min.js ./dist/purify.min.js.map ./dist/purify.cjs.js ./dist/purify.cjs.js.map ./dist/purify.cjs.d.ts ./dist/purify.es.mjs ./dist/purify.es.mjs.map ./dist/purify.es.d.mts diff --git a/scripts/fix-cjs-types.js b/scripts/fix-cjs-types.js new file mode 100644 index 000000000..3315f9270 --- /dev/null +++ b/scripts/fix-cjs-types.js @@ -0,0 +1,31 @@ +const fs = require('node:fs/promises'); +const path = require('node:path'); + +(async () => { + // Note that this script is intended to run on the type declaration file that is + // output by Rollup, and not the type declaration file generated from TypeScript. + let fileName = path.resolve(__dirname, '../dist/purify.cjs.d.ts'); + let types = await fs.readFile(fileName, { encoding: 'utf-8' }); + + // DOMPurify is exported as a default export, but rollup changes + // it to be assigned to `module.exports`. We need to change the + // type declarations to match what rollup changed it to. Remove + // the "default" export from the `export { ... }` statement. + let fixed = types.replace(', _default as default', ''); + + // Verify that we actually removed something in case the + // type declarations are different to what we expected. + if (fixed === types) { + throw new Error('Failed to fix CommonJS type declarations.'); + } + + // Append `export = _default;` to match the + // `module.exports = DOMPurify` statement + // that Rollup creates. + fixed += '\nexport = _default;\n'; + + await fs.writeFile(fileName, fixed); +})().catch((ex) => { + console.error(ex); + process.exitCode = 1; +}); diff --git a/src/attrs.js b/src/attrs.ts similarity index 99% rename from src/attrs.js rename to src/attrs.ts index b9c2aed1e..709d52dee 100644 --- a/src/attrs.js +++ b/src/attrs.ts @@ -114,7 +114,7 @@ export const html = freeze([ 'wrap', 'xmlns', 'slot', -]); +] as const); export const svg = freeze([ 'accent-height', @@ -304,7 +304,7 @@ export const svg = freeze([ 'y2', 'z', 'zoomandpan', -]); +] as const); export const mathMl = freeze([ 'accent', @@ -368,4 +368,4 @@ export const xml = freeze([ 'xlink:title', 'xml:space', 'xmlns:xlink', -]); +] as const); diff --git a/src/config.ts b/src/config.ts new file mode 100644 index 000000000..86e1b99fa --- /dev/null +++ b/src/config.ts @@ -0,0 +1,245 @@ +/* eslint-disable @typescript-eslint/indent */ + +/** + * Configuration to control DOMPurify behavior. + */ +export interface Config { + /** + * Extend the existing array of allowed attributes. + */ + ADD_ATTR?: string[] | undefined; + + /** + * Extend the existing array of elements that can use Data URIs. + */ + ADD_DATA_URI_TAGS?: string[] | undefined; + + /** + * Extend the existing array of allowed tags. + */ + ADD_TAGS?: string[] | undefined; + + /** + * Extend the existing array of elements that are safe for URI-like values (be careful, XSS risk). + */ + ADD_URI_SAFE_ATTR?: string[] | undefined; + + /** + * Allow ARIA attributes, leave other safe HTML as is (default is true). + */ + ALLOW_ARIA_ATTR?: boolean | undefined; + + /** + * Allow HTML5 data attributes, leave other safe HTML as is (default is true). + */ + ALLOW_DATA_ATTR?: boolean | undefined; + + /** + * Allow external protocol handlers in URL attributes (default is false, be careful, XSS risk). + * By default only `http`, `https`, `ftp`, `ftps`, `tel`, `mailto`, `callto`, `sms`, `cid` and `xmpp` are allowed. + */ + ALLOW_UNKNOWN_PROTOCOLS?: boolean | undefined; + + /** + * Decide if self-closing tags in attributes are allowed. + * Usually removed due to a mXSS issue in jQuery 3.0. + */ + ALLOW_SELF_CLOSE_IN_ATTR?: boolean | undefined; + + /** + * Allow only specific attributes. + */ + ALLOWED_ATTR?: string[] | undefined; + + /** + * Allow only specific elements. + */ + ALLOWED_TAGS?: string[] | undefined; + + /** + * Allow only specific namespaces. Defaults to: + * - `http://www.w3.org/1999/xhtml` + * - `http://www.w3.org/2000/svg` + * - `http://www.w3.org/1998/Math/MathML` + */ + ALLOWED_NAMESPACES?: string[] | undefined; + + /** + * Allow specific protocols handlers in URL attributes via regex (be careful, XSS risk). + * Default RegExp: + * ``` + * /^(?:(?:(?:f|ht)tps?|mailto|tel|callto|sms|cid|xmpp):|[^a-z]|[a-z+.\-]+(?:[^a-z+.\-:]|$))/i; + * ``` + */ + ALLOWED_URI_REGEXP?: RegExp | undefined; + + /** + * Define how custom elements are handled. + */ + CUSTOM_ELEMENT_HANDLING?: { + /** + * Regular expression or function to match to allowed elements. + * Default is null (disallow any custom elements). + */ + tagNameCheck?: RegExp | ((tagName: string) => boolean) | null | undefined; + + /** + * Regular expression or function to match to allowed attributes. + * Default is null (disallow any attributes not on the allow list). + */ + attributeNameCheck?: + | RegExp + | ((attributeName: string) => boolean) + | null + | undefined; + + /** + * Allow custom elements derived from built-ins if they pass `tagNameCheck`. Default is false. + */ + allowCustomizedBuiltInElements?: boolean | undefined; + }; + + /** + * Add attributes to block-list. + */ + FORBID_ATTR?: string[] | undefined; + + /** + * Add child elements to be removed when their parent is removed. + */ + FORBID_CONTENTS?: string[] | undefined; + + /** + * Add elements to block-list. + */ + FORBID_TAGS?: string[] | undefined; + + /** + * Glue elements like style, script or others to `document.body` and prevent unintuitive browser behavior in several edge-cases (default is false). + */ + FORCE_BODY?: boolean | undefined; + + /** + * Map of non-standard HTML element names to support. Map to true to enable support. For example: + * + * ``` + * HTML_INTEGRATION_POINTS: { foreignobject: true } + * ``` + */ + HTML_INTEGRATION_POINTS?: Record | undefined; + + /** + * Sanitize a node "in place", which is much faster depending on how you use DOMPurify. + */ + IN_PLACE?: boolean | undefined; + + /** + * Keep an element's content when the element is removed (default is true). + */ + KEEP_CONTENT?: boolean | undefined; + + /** + * Map of MathML element names to support. Map to true to enable support. For example: + * + * ``` + * MATHML_TEXT_INTEGRATION_POINTS: { mtext: true } + * ``` + */ + MATHML_TEXT_INTEGRATION_POINTS?: Record | undefined; + + /** + * Change the default namespace from HTML to something different. + */ + NAMESPACE?: string | undefined; + + /** + * Change the parser type so sanitized data is treated as XML and not as HTML, which is the default. + */ + PARSER_MEDIA_TYPE?: DOMParserSupportedType | undefined; + + /** + * Return a DOM `DocumentFragment` instead of an HTML string (default is false). + */ + RETURN_DOM_FRAGMENT?: boolean | undefined; + + /** + * Return a DOM `HTMLBodyElement` instead of an HTML string (default is false). + */ + RETURN_DOM?: boolean | undefined; + + /** + * Return a TrustedHTML object instead of a string if possible. + */ + RETURN_TRUSTED_TYPE?: boolean | undefined; + + /** + * Strip `{{ ... }}`, `${ ... }` and `<% ... %>` to make output safe for template systems. + * Be careful please, this mode is not recommended for production usage. + * Allowing template parsing in user-controlled HTML is not advised at all. + * Only use this mode if there is really no alternative. + */ + SAFE_FOR_TEMPLATES?: boolean | undefined; + + /** + * Change how e.g. comments containing risky HTML characters are treated. + * Be very careful, this setting should only be set to `false` if you really only handle + * HTML and nothing else, no SVG, MathML or the like. + * Otherwise, changing from `true` to `false` will lead to XSS in this or some other way. + */ + SAFE_FOR_XML?: boolean | undefined; + + /** + * Use DOM Clobbering protection on output (default is true, handle with care, minor XSS risks here). + */ + SANITIZE_DOM?: boolean | undefined; + + /** + * Enforce strict DOM Clobbering protection via namespace isolation (default is false). + * When enabled, isolates the namespace of named properties (i.e., `id` and `name` attributes) + * from JS variables by prefixing them with the string `user-content-` + */ + SANITIZE_NAMED_PROPS?: boolean | undefined; + + /** + * Supplied policy must define `createHTML` and `createScriptURL`. + */ + TRUSTED_TYPES_POLICY?: TrustedTypePolicy | undefined; + + /** + * Controls categories of allowed elements. + * + * Note that the `USE_PROFILES` setting will override the `ALLOWED_TAGS` setting + * so don't use them together. + */ + USE_PROFILES?: false | UseProfilesConfig | undefined; + + /** + * Return entire document including tags (default is false). + */ + WHOLE_DOCUMENT?: boolean | undefined; +} + +/** + * Defines categories of allowed elements. + */ +export interface UseProfilesConfig { + /** + * Allow all safe MathML elements. + */ + mathMl?: boolean | undefined; + + /** + * Allow all safe SVG elements. + */ + svg?: boolean | undefined; + + /** + * Allow all save SVG Filters. + */ + svgFilters?: boolean | undefined; + + /** + * Allow all safe HTML elements. + */ + html?: boolean | undefined; +} diff --git a/src/purify.js b/src/purify.ts similarity index 80% rename from src/purify.js rename to src/purify.ts index 144e46c02..5c2ba4d7d 100644 --- a/src/purify.js +++ b/src/purify.ts @@ -1,3 +1,6 @@ +/* eslint-disable @typescript-eslint/indent */ + +import type { Config, UseProfilesConfig } from './config'; import * as TAGS from './tags.js'; import * as ATTRS from './attrs.js'; import * as EXPRESSIONS from './regexp.js'; @@ -22,6 +25,10 @@ import { objectHasOwnProperty, } from './utils.js'; +export type { Config } from './config'; + +declare const VERSION: string; + // https://developer.mozilla.org/en-US/docs/Web/API/Node/nodeType const NODE_TYPE = { element: 1, @@ -38,19 +45,22 @@ const NODE_TYPE = { notation: 12, // Deprecated }; -const getGlobal = function () { +const getGlobal = function (): WindowLike { return typeof window === 'undefined' ? null : window; }; /** * Creates a no-op policy for internal use only. * Don't export this function outside this module! - * @param {TrustedTypePolicyFactory} trustedTypes The policy factory. - * @param {HTMLScriptElement} purifyHostElement The Script element used to load DOMPurify (to determine policy name suffix). - * @return {TrustedTypePolicy} The policy created (or null, if Trusted Types + * @param trustedTypes The policy factory. + * @param purifyHostElement The Script element used to load DOMPurify (to determine policy name suffix). + * @return The policy created (or null, if Trusted Types * are not supported or creating the policy failed). */ -const _createTrustedTypesPolicy = function (trustedTypes, purifyHostElement) { +const _createTrustedTypesPolicy = function ( + trustedTypes: TrustedTypePolicyFactory, + purifyHostElement: HTMLScriptElement +) { if ( typeof trustedTypes !== 'object' || typeof trustedTypes.createPolicy !== 'function' @@ -89,19 +99,11 @@ const _createTrustedTypesPolicy = function (trustedTypes, purifyHostElement) { } }; -function createDOMPurify(window = getGlobal()) { - const DOMPurify = (root) => createDOMPurify(root); +function createDOMPurify(window: WindowLike = getGlobal()): DOMPurify { + const DOMPurify: DOMPurify = (root: WindowLike) => createDOMPurify(root); - /** - * Version label, exposed for easier checks - * if DOMPurify is up to date or not - */ DOMPurify.version = VERSION; - /** - * Array of elements that DOMPurify removed during sanitation. - * Empty if nothing was removed. - */ DOMPurify.removed = []; if ( @@ -119,14 +121,15 @@ function createDOMPurify(window = getGlobal()) { let { document } = window; const originalDocument = document; - const currentScript = originalDocument.currentScript; + const currentScript: HTMLScriptElement = + originalDocument.currentScript as HTMLScriptElement; const { DocumentFragment, HTMLTemplateElement, Node, Element, NodeFilter, - NamedNodeMap = window.NamedNodeMap || window.MozNamedAttrMap, + NamedNodeMap = window.NamedNodeMap || (window as any).MozNamedAttrMap, HTMLFormElement, DOMParser, trustedTypes, @@ -213,7 +216,7 @@ function createDOMPurify(window = getGlobal()) { ]); /* - * Configure how DOMPUrify should handle custom elements and their attributes as well as customized built-in elements. + * Configure how DOMPurify should handle custom elements and their attributes as well as customized built-in elements. * @property {RegExp|Function|null} tagNameCheck one of [null, regexPattern, predicate]. Default: `null` (disallow any custom elements) * @property {RegExp|Function|null} attributeNameCheck one of [null, regexPattern, predicate]. Default: `null` (disallow any attributes not on the allow list) * @property {boolean} allowCustomizedBuiltInElements allow custom elements derived from built-ins if they pass CUSTOM_ELEMENT_HANDLING.tagNameCheck. Default: `false`. @@ -323,7 +326,7 @@ function createDOMPurify(window = getGlobal()) { let IN_PLACE = false; /* Allow usage of profiles like html, svg and mathMl */ - let USE_PROFILES = {}; + let USE_PROFILES: UseProfilesConfig | false = {}; /* Tags to ignore content of when KEEP_CONTENT is true */ let FORBID_CONTENTS = null; @@ -400,31 +403,55 @@ function createDOMPurify(window = getGlobal()) { stringToString ); + let MATHML_TEXT_INTEGRATION_POINTS = addToSet({}, [ + 'mi', + 'mo', + 'mn', + 'ms', + 'mtext', + ]); + + let HTML_INTEGRATION_POINTS = addToSet({}, ['annotation-xml']); + + // Certain elements are allowed in both SVG and HTML + // namespace. We need to specify them explicitly + // so that they don't get erroneously deleted from + // HTML namespace. + const COMMON_SVG_AND_HTML_ELEMENTS = addToSet({}, [ + 'title', + 'style', + 'font', + 'a', + 'script', + ]); + /* Parsing of strict XHTML documents */ - let PARSER_MEDIA_TYPE = null; + let PARSER_MEDIA_TYPE: null | DOMParserSupportedType = null; const SUPPORTED_PARSER_MEDIA_TYPES = ['application/xhtml+xml', 'text/html']; const DEFAULT_PARSER_MEDIA_TYPE = 'text/html'; - let transformCaseFunc = null; + let transformCaseFunc: null | Parameters[2] = null; /* Keep a reference to config to pass to hooks */ - let CONFIG = null; + let CONFIG: Config | null = null; /* Ideally, do not touch anything below this line */ /* ______________________________________________ */ const formElement = document.createElement('form'); - const isRegexOrFunction = function (testValue) { + const isRegexOrFunction = function ( + testValue: unknown + ): testValue is Function | RegExp { return testValue instanceof RegExp || testValue instanceof Function; }; /** * _parseConfig * - * @param {Object} cfg optional config literal + * @param cfg optional config literal */ // eslint-disable-next-line complexity - const _parseConfig = function (cfg = {}) { + const _parseConfig = function (cfg: Config = {}): void { if (CONFIG && CONFIG === cfg) { return; } @@ -461,17 +488,17 @@ function createDOMPurify(window = getGlobal()) { : DEFAULT_ALLOWED_NAMESPACES; URI_SAFE_ATTRIBUTES = objectHasOwnProperty(cfg, 'ADD_URI_SAFE_ATTR') ? addToSet( - clone(DEFAULT_URI_SAFE_ATTRIBUTES), // eslint-disable-line indent - cfg.ADD_URI_SAFE_ATTR, // eslint-disable-line indent - transformCaseFunc // eslint-disable-line indent - ) // eslint-disable-line indent + clone(DEFAULT_URI_SAFE_ATTRIBUTES), + cfg.ADD_URI_SAFE_ATTR, + transformCaseFunc + ) : DEFAULT_URI_SAFE_ATTRIBUTES; DATA_URI_TAGS = objectHasOwnProperty(cfg, 'ADD_DATA_URI_TAGS') ? addToSet( - clone(DEFAULT_DATA_URI_TAGS), // eslint-disable-line indent - cfg.ADD_DATA_URI_TAGS, // eslint-disable-line indent - transformCaseFunc // eslint-disable-line indent - ) // eslint-disable-line indent + clone(DEFAULT_DATA_URI_TAGS), + cfg.ADD_DATA_URI_TAGS, + transformCaseFunc + ) : DEFAULT_DATA_URI_TAGS; FORBID_CONTENTS = objectHasOwnProperty(cfg, 'FORBID_CONTENTS') ? addToSet({}, cfg.FORBID_CONTENTS, transformCaseFunc) @@ -502,6 +529,11 @@ function createDOMPurify(window = getGlobal()) { IN_PLACE = cfg.IN_PLACE || false; // Default false IS_ALLOWED_URI = cfg.ALLOWED_URI_REGEXP || EXPRESSIONS.IS_ALLOWED_URI; NAMESPACE = cfg.NAMESPACE || HTML_NAMESPACE; + MATHML_TEXT_INTEGRATION_POINTS = + cfg.MATHML_TEXT_INTEGRATION_POINTS || MATHML_TEXT_INTEGRATION_POINTS; + HTML_INTEGRATION_POINTS = + cfg.HTML_INTEGRATION_POINTS || HTML_INTEGRATION_POINTS; + CUSTOM_ELEMENT_HANDLING = cfg.CUSTOM_ELEMENT_HANDLING || {}; if ( cfg.CUSTOM_ELEMENT_HANDLING && @@ -651,28 +683,6 @@ function createDOMPurify(window = getGlobal()) { CONFIG = cfg; }; - const MATHML_TEXT_INTEGRATION_POINTS = addToSet({}, [ - 'mi', - 'mo', - 'mn', - 'ms', - 'mtext', - ]); - - const HTML_INTEGRATION_POINTS = addToSet({}, ['annotation-xml']); - - // Certain elements are allowed in both SVG and HTML - // namespace. We need to specify them explicitly - // so that they don't get erroneously deleted from - // HTML namespace. - const COMMON_SVG_AND_HTML_ELEMENTS = addToSet({}, [ - 'title', - 'style', - 'font', - 'a', - 'script', - ]); - /* Keep track of all possible SVG and MathML tags * so that we can perform the namespace checks * correctly. */ @@ -687,12 +697,12 @@ function createDOMPurify(window = getGlobal()) { ]); /** - * @param {Element} element a DOM element whose namespace is being checked - * @returns {boolean} Return false if the element has a + * @param element a DOM element whose namespace is being checked + * @returns Return false if the element has a * namespace that a spec-compliant parser would never * return. Return true otherwise. */ - const _checkValidNamespace = function (element) { + const _checkValidNamespace = function (element: Element): boolean { let parent = getParentNode(element); // In JSDOM, if we're inside shadow DOM, then parentNode @@ -798,9 +808,9 @@ function createDOMPurify(window = getGlobal()) { /** * _forceRemove * - * @param {Node} node a DOM node + * @param node a DOM node */ - const _forceRemove = function (node) { + const _forceRemove = function (node: Node): void { arrayPush(DOMPurify.removed, { element: node }); try { @@ -814,33 +824,33 @@ function createDOMPurify(window = getGlobal()) { /** * _removeAttribute * - * @param {String} name an Attribute name - * @param {Node} node a DOM node + * @param name an Attribute name + * @param element a DOM node */ - const _removeAttribute = function (name, node) { + const _removeAttribute = function (name: string, element: Element): void { try { arrayPush(DOMPurify.removed, { - attribute: node.getAttributeNode(name), - from: node, + attribute: element.getAttributeNode(name), + from: element, }); } catch (_) { arrayPush(DOMPurify.removed, { attribute: null, - from: node, + from: element, }); } - node.removeAttribute(name); + element.removeAttribute(name); // We void attribute values for unremovable "is"" attributes if (name === 'is' && !ALLOWED_ATTR[name]) { if (RETURN_DOM || RETURN_DOM_FRAGMENT) { try { - _forceRemove(node); + _forceRemove(element); } catch (_) {} } else { try { - node.setAttribute(name, ''); + element.setAttribute(name, ''); } catch (_) {} } } @@ -849,10 +859,10 @@ function createDOMPurify(window = getGlobal()) { /** * _initDocument * - * @param {String} dirty a string of dirty markup - * @return {Document} a DOM, filled with the dirty markup + * @param dirty - a string of dirty markup + * @return a DOM, filled with the dirty markup */ - const _initDocument = function (dirty) { + const _initDocument = function (dirty: string): Document { /* Create a HTML document */ let doc = null; let leadingWhitespace = null; @@ -924,10 +934,10 @@ function createDOMPurify(window = getGlobal()) { /** * Creates a NodeIterator object that you can use to traverse filtered lists of nodes or elements in a document. * - * @param {Node} root The root element or node to start traversing on. - * @return {NodeIterator} The created NodeIterator + * @param root The root element or node to start traversing on. + * @return The created NodeIterator */ - const _createNodeIterator = function (root) { + const _createNodeIterator = function (root: Node): NodeIterator { return createNodeIterator.call( root.ownerDocument || root, root, @@ -944,43 +954,68 @@ function createDOMPurify(window = getGlobal()) { /** * _isClobbered * - * @param {Node} elm element to check for clobbering attacks - * @return {Boolean} true if clobbered, false if safe + * @param element element to check for clobbering attacks + * @return true if clobbered, false if safe */ - const _isClobbered = function (elm) { + const _isClobbered = function (element: Element): boolean { return ( - elm instanceof HTMLFormElement && - (typeof elm.nodeName !== 'string' || - typeof elm.textContent !== 'string' || - typeof elm.removeChild !== 'function' || - !(elm.attributes instanceof NamedNodeMap) || - typeof elm.removeAttribute !== 'function' || - typeof elm.setAttribute !== 'function' || - typeof elm.namespaceURI !== 'string' || - typeof elm.insertBefore !== 'function' || - typeof elm.hasChildNodes !== 'function') + element instanceof HTMLFormElement && + (typeof element.nodeName !== 'string' || + typeof element.textContent !== 'string' || + typeof element.removeChild !== 'function' || + !(element.attributes instanceof NamedNodeMap) || + typeof element.removeAttribute !== 'function' || + typeof element.setAttribute !== 'function' || + typeof element.namespaceURI !== 'string' || + typeof element.insertBefore !== 'function' || + typeof element.hasChildNodes !== 'function') ); }; /** * Checks whether the given object is a DOM node. * - * @param {Node} object object to check whether it's a DOM node - * @return {Boolean} true is object is a DOM node + * @param value object to check whether it's a DOM node + * @return true is object is a DOM node */ - const _isNode = function (object) { - return typeof Node === 'function' && object instanceof Node; + const _isNode = function (value: unknown): value is Node { + return typeof Node === 'function' && value instanceof Node; }; + // The following overloads of `_executeHook` add type-safety to the callers, + // ensuring that the caller provides the correct `data` parameter. + /** * _executeHook * Execute user configurable hooks * - * @param {String} entryPoint Name of the hook's entry point - * @param {Node} currentNode node to work on with the hook - * @param {Object} data additional hook parameters + * @param entryPoint Name of the hook's entry point + * @param currentNode node to work on with the hook + * @param data additional hook parameters */ - const _executeHook = function (entryPoint, currentNode, data) { + function _executeHook( + entryPoint: BasicHookName, + currentNode: Node, + data: null + ): void; + + function _executeHook( + entryPoint: UponSanitizeElementHookName, + currentNode: Node, + data: UponSanitizeElementHookEvent + ): void; + + function _executeHook( + entryPoint: UponSanitizeAttributeHookName, + currentNode: Node, + data: UponSanitizeAttributeHookEvent + ): void; + + function _executeHook( + entryPoint: HookName, + currentNode: Node, + data: UponSanitizeAttributeHookEvent | UponSanitizeElementHookEvent | null + ): void { if (!hooks[entryPoint]) { return; } @@ -988,7 +1023,7 @@ function createDOMPurify(window = getGlobal()) { arrayForEach(hooks[entryPoint], (hook) => { hook.call(DOMPurify, currentNode, data, CONFIG); }); - }; + } /** * _sanitizeElements @@ -996,11 +1031,10 @@ function createDOMPurify(window = getGlobal()) { * @protect nodeName * @protect textContent * @protect removeChild - * - * @param {Node} currentNode to check for permission to exist - * @return {Boolean} true if node was killed, false if left alive + * @param currentNode to check for permission to exist + * @return true if node was killed, false if left alive */ - const _sanitizeElements = function (currentNode) { + const _sanitizeElements = function (currentNode: any): boolean { let content = null; /* Execute a hook if present */ @@ -1128,13 +1162,17 @@ function createDOMPurify(window = getGlobal()) { /** * _isValidAttribute * - * @param {string} lcTag Lowercase tag name of containing element. - * @param {string} lcName Lowercase attribute name. - * @param {string} value Attribute value. - * @return {Boolean} Returns true if `value` is valid, otherwise false. + * @param lcTag Lowercase tag name of containing element. + * @param lcName Lowercase attribute name. + * @param value Attribute value. + * @return Returns true if `value` is valid, otherwise false. */ // eslint-disable-next-line complexity - const _isValidAttribute = function (lcTag, lcName, value) { + const _isValidAttribute = function ( + lcTag: string, + lcName: string, + value: string + ): boolean { /* Make sure attribute cannot clobber */ if ( SANITIZE_DOM && @@ -1227,10 +1265,10 @@ function createDOMPurify(window = getGlobal()) { * checks if at least one dash is included in tagName, and it's not the first char * for more sophisticated checking see https://github.com/sindresorhus/validate-element-name * - * @param {string} tagName name of the tag of the node to sanitize - * @returns {boolean} Returns true if the tag name meets the basic criteria for a custom element, otherwise false. + * @param tagName name of the tag of the node to sanitize + * @returns Returns true if the tag name meets the basic criteria for a custom element, otherwise false. */ - const _isBasicCustomElement = function (tagName) { + const _isBasicCustomElement = function (tagName: string): RegExpMatchArray { return tagName !== 'annotation-xml' && stringMatch(tagName, CUSTOM_ELEMENT); }; @@ -1242,9 +1280,9 @@ function createDOMPurify(window = getGlobal()) { * @protect removeAttribute * @protect setAttribute * - * @param {Node} currentNode to sanitize + * @param currentNode to sanitize */ - const _sanitizeAttributes = function (currentNode) { + const _sanitizeAttributes = function (currentNode: Element): void { /* Execute a hook if present */ _executeHook('beforeSanitizeAttributes', currentNode, null); @@ -1260,6 +1298,7 @@ function createDOMPurify(window = getGlobal()) { attrValue: '', keepAttr: true, allowedAttributes: ALLOWED_ATTR, + forceKeepAttr: undefined, }; let l = attributes.length; @@ -1279,6 +1318,23 @@ function createDOMPurify(window = getGlobal()) { _executeHook('uponSanitizeAttribute', currentNode, hookEvent); value = hookEvent.attrValue; + /* Full DOM Clobbering protection via namespace isolation, + * Prefix id and name attributes with `user-content-` + */ + if (SANITIZE_NAMED_PROPS && (lcName === 'id' || lcName === 'name')) { + // Remove the attribute with this value + _removeAttribute(name, currentNode); + + // Prefix the value and later re-create the attribute with the sanitized value + value = SANITIZE_NAMED_PROPS_PREFIX + value; + } + + /* Work around a security issue with comments inside attributes */ + if (SAFE_FOR_XML && regExpTest(/((--!?|])>)|<\/(style|title)/i, value)) { + _removeAttribute(name, currentNode); + continue; + } + /* Did the hooks approve of the attribute? */ if (hookEvent.forceKeepAttr) { continue; @@ -1311,23 +1367,6 @@ function createDOMPurify(window = getGlobal()) { continue; } - /* Full DOM Clobbering protection via namespace isolation, - * Prefix id and name attributes with `user-content-` - */ - if (SANITIZE_NAMED_PROPS && (lcName === 'id' || lcName === 'name')) { - // Remove the attribute with this value - _removeAttribute(name, currentNode); - - // Prefix the value and later re-create the attribute with the sanitized value - value = SANITIZE_NAMED_PROPS_PREFIX + value; - } - - /* Work around a security issue with comments inside attributes */ - if (SAFE_FOR_XML && regExpTest(/((--!?|])>)|<\/(style|title)/i, value)) { - _removeAttribute(name, currentNode); - continue; - } - /* Handle attributes that require Trusted Types */ if ( trustedTypesPolicy && @@ -1379,9 +1418,9 @@ function createDOMPurify(window = getGlobal()) { /** * _sanitizeShadowDOM * - * @param {DocumentFragment} fragment to iterate over recursively + * @param fragment to iterate over recursively */ - const _sanitizeShadowDOM = function (fragment) { + const _sanitizeShadowDOM = function (fragment: DocumentFragment): void { let shadowNode = null; const shadowIterator = _createNodeIterator(fragment); @@ -1410,13 +1449,6 @@ function createDOMPurify(window = getGlobal()) { _executeHook('afterSanitizeShadowDOM', fragment, null); }; - /** - * Sanitize - * Public method providing core sanitation functionality - * - * @param {String|Node} dirty string or DOM node - * @param {Object} cfg object - */ // eslint-disable-next-line complexity DOMPurify.sanitize = function (dirty, cfg = {}) { let body = null; @@ -1463,8 +1495,8 @@ function createDOMPurify(window = getGlobal()) { if (IN_PLACE) { /* Do some early pre-sanitization to avoid unsafe root nodes */ - if (dirty.nodeName) { - const tagName = transformCaseFunc(dirty.nodeName); + if ((dirty as Node).nodeName) { + const tagName = transformCaseFunc((dirty as Node).nodeName); if (!ALLOWED_TAGS[tagName] || FORBID_TAGS[tagName]) { throw typeErrorCreate( 'root node is forbidden and cannot be sanitized in-place' @@ -1594,37 +1626,16 @@ function createDOMPurify(window = getGlobal()) { : serializedHTML; }; - /** - * Public method to set the configuration once - * setConfig - * - * @param {Object} cfg configuration object - */ DOMPurify.setConfig = function (cfg = {}) { _parseConfig(cfg); SET_CONFIG = true; }; - /** - * Public method to remove the configuration - * clearConfig - * - */ DOMPurify.clearConfig = function () { CONFIG = null; SET_CONFIG = false; }; - /** - * Public method to check if an attribute value is valid. - * Uses last set config, if any. Otherwise, uses config defaults. - * isValidAttribute - * - * @param {String} tag Tag name of containing element. - * @param {String} attr Attribute name. - * @param {String} value Attribute value. - * @return {Boolean} Returns true if `value` is valid. Otherwise, returns false. - */ DOMPurify.isValidAttribute = function (tag, attr, value) { /* Initialize shared config vars if necessary. */ if (!CONFIG) { @@ -1636,13 +1647,6 @@ function createDOMPurify(window = getGlobal()) { return _isValidAttribute(lcTag, lcName, value); }; - /** - * AddHook - * Public method to add DOMPurify hooks - * - * @param {String} entryPoint entry point for the hook to add - * @param {Function} hookFunction function to execute - */ DOMPurify.addHook = function (entryPoint, hookFunction) { if (typeof hookFunction !== 'function') { return; @@ -1652,36 +1656,18 @@ function createDOMPurify(window = getGlobal()) { arrayPush(hooks[entryPoint], hookFunction); }; - /** - * RemoveHook - * Public method to remove a DOMPurify hook at a given entryPoint - * (pops it from the stack of hooks if more are present) - * - * @param {String} entryPoint entry point for the hook to remove - * @return {Function} removed(popped) hook - */ DOMPurify.removeHook = function (entryPoint) { if (hooks[entryPoint]) { return arrayPop(hooks[entryPoint]); } }; - /** - * RemoveHooks - * Public method to remove all DOMPurify hooks at a given entryPoint - * - * @param {String} entryPoint entry point for the hooks to remove - */ DOMPurify.removeHooks = function (entryPoint) { if (hooks[entryPoint]) { hooks[entryPoint] = []; } }; - /** - * RemoveAllHooks - * Public method to remove all DOMPurify hooks - */ DOMPurify.removeAllHooks = function () { hooks = {}; }; @@ -1690,3 +1676,269 @@ function createDOMPurify(window = getGlobal()) { } export default createDOMPurify(); + +interface DOMPurify { + /** + * Creates a DOMPurify instance using the given window-like object. + */ + (root: WindowLike): DOMPurify; + + /** + * Version label, exposed for easier checks + * if DOMPurify is up to date or not + */ + version: string; + + /** + * Array of elements that DOMPurify removed during sanitation. + * Empty if nothing was removed. + */ + removed: Array; + + /** + * Expose whether this browser supports running the full DOMPurify. + */ + isSupported: boolean; + + /** + * Set the configuration once. + * + * @param cfg configuration object + */ + setConfig(cfg?: Config): void; + + /** + * Removes the configuration. + */ + clearConfig(): void; + + /** + * Provides core sanitation functionality. + * + * @param dirty string or DOM node + * @param cfg object + * @returns Sanitized TrustedHTML. + */ + sanitize( + dirty: string | Node, + cfg: Config & { RETURN_TRUSTED_TYPE: true } + ): TrustedHTML; + + /** + * Provides core sanitation functionality. + * + * @param dirty DOM node + * @param cfg object + * @returns Sanitized DOM node. + */ + sanitize(dirty: Node, cfg: Config & { IN_PLACE: true }): Node; + + /** + * Provides core sanitation functionality. + * + * @param dirty string or DOM node + * @param cfg object + * @returns Sanitized DOM node. + */ + sanitize(dirty: string | Node, cfg: Config & { RETURN_DOM: true }): Node; + + /** + * Provides core sanitation functionality. + * + * @param dirty string or DOM node + * @param cfg object + * @returns Sanitized document fragment. + */ + sanitize( + dirty: string | Node, + cfg: Config & { RETURN_DOM_FRAGMENT: true } + ): DocumentFragment; + + /** + * Provides core sanitation functionality. + * + * @param dirty string or DOM node + * @param cfg object + * @returns Sanitized string. + */ + sanitize(dirty: string | Node, cfg?: Config): string; + + /** + * Checks if an attribute value is valid. + * Uses last set config, if any. Otherwise, uses config defaults. + * + * @param tag Tag name of containing element. + * @param attr Attribute name. + * @param value Attribute value. + * @returns Returns true if `value` is valid. Otherwise, returns false. + */ + isValidAttribute(tag: string, attr: string, value: string): boolean; + + /** + * Adds a DOMPurify hook. + * + * @param entryPoint entry point for the hook to add + * @param hookFunction function to execute + */ + addHook(entryPoint: BasicHookName, hookFunction: Hook): void; + + /** + * Adds a DOMPurify hook. + * + * @param entryPoint entry point for the hook to add + * @param hookFunction function to execute + */ + addHook( + entryPoint: 'uponSanitizeElement', + hookFunction: UponSanitizeElementHook + ): void; + + /** + * Adds a DOMPurify hook. + * + * @param entryPoint entry point for the hook to add + * @param hookFunction function to execute + */ + addHook( + entryPoint: 'uponSanitizeAttribute', + hookFunction: UponSanitizeAttributeHook + ): void; + + /** + * Remove a DOMPurify hook at a given entryPoint + * (pops it from the stack of hooks if more are present) + * + * @param entryPoint entry point for the hook to remove + * @returns removed(popped) hook + */ + removeHook(entryPoint: BasicHookName): Hook | undefined; + + /** + * Remove a DOMPurify hook at a given entryPoint + * (pops it from the stack of hooks if more are present) + * + * @param entryPoint entry point for the hook to remove + * @returns removed(popped) hook + */ + removeHook( + entryPoint: 'uponSanitizeElement' + ): UponSanitizeElementHook | undefined; + + /** + * Remove a DOMPurify hook at a given entryPoint + * (pops it from the stack of hooks if more are present) + * + * @param entryPoint entry point for the hook to remove + * @returns removed(popped) hook + */ + removeHook( + entryPoint: 'uponSanitizeAttribute' + ): UponSanitizeAttributeHook | undefined; + + /** + * Removes all DOMPurify hooks at a given entryPoint + * + * @param entryPoint entry point for the hooks to remove + */ + removeHooks(entryPoint: HookName): void; + + /** + * Removes all DOMPurify hooks. + */ + removeAllHooks(): void; +} + +/** + * An element removed by DOMPurify. + */ +export interface RemovedElement { + /** + * The element that was removed. + */ + element: Node; +} + +/** + * An element removed by DOMPurify. + */ +export interface RemovedAttribute { + /** + * The attribute that was removed. + */ + attribute: Attr | null; + + /** + * The element that the attribute was removed. + */ + from: Node; +} + +type BasicHookName = + | 'beforeSanitizeElements' + | 'afterSanitizeElements' + | 'beforeSanitizeAttributes' + | 'afterSanitizeAttributes' + | 'beforeSanitizeShadowDOM' + | 'uponSanitizeShadowNode' + | 'afterSanitizeShadowDOM'; + +type UponSanitizeElementHookName = 'uponSanitizeElement'; +type UponSanitizeAttributeHookName = 'uponSanitizeAttribute'; + +export type HookName = + | BasicHookName + | UponSanitizeElementHookName + | UponSanitizeAttributeHookName; + +export type Hook = ( + this: DOMPurify, + currentNode: Node, + hookEvent: null, + config: Config +) => void; + +export type UponSanitizeElementHook = ( + this: DOMPurify, + currentNode: Node, + hookEvent: UponSanitizeElementHookEvent, + config: Config +) => void; + +export type UponSanitizeAttributeHook = ( + this: DOMPurify, + currentNode: Node, + hookEvent: UponSanitizeAttributeHookEvent, + config: Config +) => void; + +export interface UponSanitizeElementHookEvent { + tagName: string; + allowedTags: Record; +} + +export interface UponSanitizeAttributeHookEvent { + attrName: string; + attrValue: string; + keepAttr: boolean; + allowedAttributes: Record; + forceKeepAttr: boolean | undefined; +} + +/** + * A `Window`-like object containing the properties and types that DOMPurify requires. + */ +export type WindowLike = Pick< + typeof globalThis, + | 'DocumentFragment' + | 'HTMLTemplateElement' + | 'Node' + | 'Element' + | 'NodeFilter' + | 'NamedNodeMap' + | 'HTMLFormElement' + | 'DOMParser' +> & { + document?: Document; + MozNamedAttrMap?: typeof window.NamedNodeMap; + trustedTypes?: typeof window.trustedTypes; +}; diff --git a/src/regexp.js b/src/regexp.ts similarity index 100% rename from src/regexp.js rename to src/regexp.ts diff --git a/src/tags.js b/src/tags.ts similarity index 96% rename from src/tags.js rename to src/tags.ts index 853c7308a..d6ad4643e 100644 --- a/src/tags.js +++ b/src/tags.ts @@ -118,7 +118,7 @@ export const html = freeze([ 'var', 'video', 'wbr', -]); +] as const); // SVG export const svg = freeze([ @@ -165,7 +165,7 @@ export const svg = freeze([ 'tspan', 'view', 'vkern', -]); +] as const); export const svgFilters = freeze([ 'feBlend', @@ -193,7 +193,7 @@ export const svgFilters = freeze([ 'feSpotLight', 'feTile', 'feTurbulence', -]); +] as const); // List of SVG elements that are disallowed by default. // We still need to know them so that we can do namespace @@ -222,7 +222,7 @@ export const svgDisallowed = freeze([ 'solidcolor', 'unknown', 'use', -]); +] as const); export const mathMl = freeze([ 'math', @@ -255,7 +255,7 @@ export const mathMl = freeze([ 'munder', 'munderover', 'mprescripts', -]); +] as const); // Similarly to SVG, we want to know all MathML elements, // even those that we disallow by default. @@ -275,6 +275,6 @@ export const mathMlDisallowed = freeze([ 'annotation-xml', 'mprescripts', 'none', -]); +] as const); -export const text = freeze(['#text']); +export const text = freeze(['#text'] as const); diff --git a/src/utils.js b/src/utils.ts similarity index 68% rename from src/utils.js rename to src/utils.ts index f601d47b7..fd2d1e0d9 100644 --- a/src/utils.js +++ b/src/utils.ts @@ -55,32 +55,38 @@ const typeErrorCreate = unconstruct(TypeError); /** * Creates a new function that calls the given function with a specified thisArg and arguments. * - * @param {Function} func - The function to be wrapped and called. - * @returns {Function} A new function that calls the given function with a specified thisArg and arguments. + * @param func - The function to be wrapped and called. + * @returns A new function that calls the given function with a specified thisArg and arguments. */ -function unapply(func) { - return (thisArg, ...args) => apply(func, thisArg, args); +function unapply( + func: (thisArg: any, ...args: any[]) => T +): (thisArg: any, ...args: any[]) => T { + return (thisArg: any, ...args: any[]): T => apply(func, thisArg, args); } /** * Creates a new function that constructs an instance of the given constructor function with the provided arguments. * - * @param {Function} func - The constructor function to be wrapped and called. - * @returns {Function} A new function that constructs an instance of the given constructor function with the provided arguments. + * @param func - The constructor function to be wrapped and called. + * @returns A new function that constructs an instance of the given constructor function with the provided arguments. */ -function unconstruct(func) { - return (...args) => construct(func, args); +function unconstruct(func: (...args: any[]) => T): (...args: any[]) => T { + return (...args: any[]): T => construct(func, args); } /** * Add properties to a lookup table * - * @param {Object} set - The set to which elements will be added. - * @param {Array} array - The array containing elements to be added to the set. - * @param {Function} transformCaseFunc - An optional function to transform the case of each element before adding to the set. - * @returns {Object} The modified set with added elements. + * @param set - The set to which elements will be added. + * @param array - The array containing elements to be added to the set. + * @param transformCaseFunc - An optional function to transform the case of each element before adding to the set. + * @returns The modified set with added elements. */ -function addToSet(set, array, transformCaseFunc = stringToLowerCase) { +function addToSet( + set: Record, + array: readonly any[], + transformCaseFunc: ReturnType> = stringToLowerCase +): Record { if (setPrototypeOf) { // Make 'in' and truthy checks like Boolean(set.constructor) // independent of any properties defined on Object.prototype. @@ -96,7 +102,7 @@ function addToSet(set, array, transformCaseFunc = stringToLowerCase) { if (lcElement !== element) { // Config presets (e.g. tags.js, attrs.js) are immutable. if (!isFrozen(array)) { - array[l] = lcElement; + (array as any[])[l] = lcElement; } element = lcElement; @@ -112,10 +118,10 @@ function addToSet(set, array, transformCaseFunc = stringToLowerCase) { /** * Clean up an array to harden against CSPP * - * @param {Array} array - The array to be cleaned. - * @returns {Array} The cleaned version of the array + * @param array - The array to be cleaned. + * @returns The cleaned version of the array */ -function cleanArray(array) { +function cleanArray(array: T[]): Array { for (let index = 0; index < array.length; index++) { const isPropertyExist = objectHasOwnProperty(array, index); @@ -130,10 +136,10 @@ function cleanArray(array) { /** * Shallow clone an object * - * @param {Object} object - The object to be cloned. - * @returns {Object} A new object that copies the original. + * @param object - The object to be cloned. + * @returns A new object that copies the original. */ -function clone(object) { +function clone>(object: T): T { const newObject = create(null); for (const [property, value] of entries(object)) { @@ -160,11 +166,14 @@ function clone(object) { /** * This method automatically checks if the prop is function or getter and behaves accordingly. * - * @param {Object} object - The object to look up the getter function in its prototype chain. - * @param {String} prop - The property name for which to find the getter function. - * @returns {Function} The getter function found in the prototype chain or a fallback function. + * @param object - The object to look up the getter function in its prototype chain. + * @param prop - The property name for which to find the getter function. + * @returns The getter function found in the prototype chain or a fallback function. */ -function lookupGetter(object, prop) { +function lookupGetter>( + object: T, + prop: string +): ReturnType> | (() => null) { while (object !== null) { const desc = getOwnPropertyDescriptor(object, prop); @@ -181,7 +190,7 @@ function lookupGetter(object, prop) { object = getPrototypeOf(object); } - function fallbackValue() { + function fallbackValue(): null { return null; } diff --git a/test/karma.conf.js b/test/karma.conf.js index a6e91b77c..e5b3123a8 100644 --- a/test/karma.conf.js +++ b/test/karma.conf.js @@ -1,5 +1,5 @@ const includePaths = require('rollup-plugin-includepaths'); -const rollupConfig = require('../rollup.config.js'); +const rollupConfig = require('../rollup.config.js')[0]; const customLaunchers = require('./karma.custom-launchers.config.js').customLaunchers; const browsers = require('./karma.custom-launchers.config.js').browsers; @@ -27,7 +27,7 @@ module.exports = function (config) { ], preprocessors: { - 'src/*.js': ['rollup'], + 'src/*.ts': ['rollup'], 'test/**/*.spec.js': ['rollup'], }, diff --git a/tsconfig.json b/tsconfig.json new file mode 100644 index 000000000..c5e111f20 --- /dev/null +++ b/tsconfig.json @@ -0,0 +1,10 @@ +{ + "compilerOptions": { + "declaration": false, + "target": "ESNext", + "module": "ESNext", + "moduleResolution": "Bundler", + "skipLibCheck": true + }, + "include": ["src/**/*.ts"] +} diff --git a/website/index.html b/website/index.html index 3119d9b0b..977ae55fe 100644 --- a/website/index.html +++ b/website/index.html @@ -2,7 +2,7 @@ - DOMPurify 3.1.7 "Glow Stick" + DOMPurify 3.2.0 "Typewriter" @@ -23,7 +23,7 @@ -

DOMPurify 3.1.7 "Glow Stick"

+

DOMPurify 3.2.0 "Typewriter"

npm version Build and Test