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[KEYCLOAK-3152] - Keycloak Authorization JS Adapter
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Pedro Igor
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Jun 22, 2016
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,170 @@ | ||
| /* | ||
| * Copyright 2016 Red Hat, Inc. and/or its affiliates | ||
| * and other contributors as indicated by the @author tags. | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| * | ||
| */ | ||
|
|
||
| (function( window, undefined ) { | ||
|
|
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| var KeycloakAuthorization = function (keycloak) { | ||
| var _instance = this; | ||
| this.rpt = null; | ||
|
|
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| this.init = function () { | ||
| var request = new XMLHttpRequest(); | ||
|
|
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| request.open('GET', keycloak.authServerUrl + '/realms/' + keycloak.realm + '/.well-known/uma-configuration'); | ||
| request.onreadystatechange = function () { | ||
| if (request.readyState == 4) { | ||
| if (request.status == 200) { | ||
| _instance.config = JSON.parse(request.responseText); | ||
| } else { | ||
| console.error('Could not obtain configuration from server.'); | ||
| } | ||
| } | ||
| } | ||
|
|
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| request.send(null); | ||
| }; | ||
|
|
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| /** | ||
| * This method enables client applications to better integrate with resource servers protected by a Keycloak | ||
| * policy enforcer. | ||
| * | ||
| * In this case, the resource server will respond with a 401 status code and a WWW-Authenticate header holding the | ||
| * necessary information to ask a Keycloak server for authorization data using both UMA and Entitlement protocol, | ||
| * depending on how the policy enforcer at the resource server was configured. | ||
| */ | ||
| this.authorize = function (wwwAuthenticateHeader) { | ||
| this.then = function (onGrant, onDeny, onError) { | ||
| if (wwwAuthenticateHeader.startsWith('UMA')) { | ||
| var params = wwwAuthenticateHeader.split(','); | ||
|
|
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| for (i = 0; i < params.length; i++) { | ||
| var param = params[i].split('='); | ||
|
|
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| if (param[0] == 'ticket') { | ||
| var request = new XMLHttpRequest(); | ||
|
|
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| request.open('POST', _instance.config.rpt_endpoint, true); | ||
| request.setRequestHeader('Content-Type', 'application/json') | ||
| request.setRequestHeader('Authorization', 'Bearer ' + keycloak.token) | ||
|
|
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| request.onreadystatechange = function () { | ||
| if (request.readyState == 4) { | ||
| var status = request.status; | ||
|
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| if (status >= 200 && status < 300) { | ||
| var rpt = JSON.parse(request.responseText).rpt; | ||
| _instance.rpt = rpt; | ||
| onGrant(rpt); | ||
| } else if (status == 403) { | ||
| if (onDeny) { | ||
| onDeny(); | ||
| } else { | ||
| console.error('Authorization request was denied by the server.'); | ||
| } | ||
| } else { | ||
| if (onError) { | ||
| onError(); | ||
| } else { | ||
| console.error('Could not obtain authorization data from server.'); | ||
| } | ||
| } | ||
| } | ||
| }; | ||
|
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| var ticket = param[1].substring(1, param[1].length - 1).trim(); | ||
|
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| request.send(JSON.stringify( | ||
| { | ||
| ticket: ticket, | ||
| rpt: _instance.rpt | ||
| } | ||
| )); | ||
| } | ||
| } | ||
| } else if (wwwAuthenticateHeader.startsWith('KC_ETT')) { | ||
| var params = wwwAuthenticateHeader.substring('KC_ETT'.length).trim().split(','); | ||
| var clientId = null; | ||
|
|
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| for (i = 0; i < params.length; i++) { | ||
| var param = params[i].split('='); | ||
|
|
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| if (param[0] == 'realm') { | ||
| clientId = param[1].substring(1, param[1].length - 1).trim(); | ||
| } | ||
| } | ||
|
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| _instance.entitlement(clientId).then(onGrant, onDeny, onError); | ||
| } | ||
| }; | ||
|
|
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| /** | ||
| * Obtains all entitlements from a Keycloak Server based on a give resourceServerId. | ||
| */ | ||
| this.entitlement = function (resourceSeververId) { | ||
| this.then = function (onGrant, onDeny, onError) { | ||
| var request = new XMLHttpRequest(); | ||
|
|
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| request.open('GET', keycloak.authServerUrl + '/realms/' + keycloak.realm + '/authz/entitlement/' + resourceSeververId, true); | ||
| request.setRequestHeader('Authorization', 'Bearer ' + keycloak.token) | ||
|
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| request.onreadystatechange = function () { | ||
| if (request.readyState == 4) { | ||
| var status = request.status; | ||
|
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| if (status >= 200 && status < 300) { | ||
| var rpt = JSON.parse(request.responseText).rpt; | ||
| _instance.rpt = rpt; | ||
| onGrant(rpt); | ||
| } else if (status == 403) { | ||
| if (onDeny) { | ||
| onDeny(); | ||
| } else { | ||
| console.error('Authorization request was denied by the server.'); | ||
| } | ||
| } else { | ||
| if (onError) { | ||
| onError(); | ||
| } else { | ||
| console.error('Could not obtain authorization data from server.'); | ||
| } | ||
| } | ||
| } | ||
| }; | ||
|
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| request.send(null); | ||
| }; | ||
|
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| return this; | ||
| }; | ||
|
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| return this; | ||
| }; | ||
|
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| this.init(this); | ||
| }; | ||
|
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| if ( typeof module === "object" && module && typeof module.exports === "object" ) { | ||
| module.exports = KeycloakAuthorization; | ||
| } else { | ||
| window.KeycloakAuthorization = KeycloakAuthorization; | ||
|
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||
| if ( typeof define === "function" && define.amd ) { | ||
| define( "keycloak-authorization", [], function () { return KeycloakAuthorization; } ); | ||
| } | ||
| } | ||
| })( window ); |
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