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ReferrerInfo.cpp
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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "nsIClassInfoImpl.h"
#include "nsIEffectiveTLDService.h"
#include "nsIHttpChannel.h"
#include "nsIObjectInputStream.h"
#include "nsIObjectOutputStream.h"
#include "nsIURIFixup.h"
#include "nsIURL.h"
#include "nsWhitespaceTokenizer.h"
#include "nsAlgorithm.h"
#include "nsContentUtils.h"
#include "nsCharSeparatedTokenizer.h"
#include "ReferrerInfo.h"
#include "mozilla/AntiTrackingCommon.h"
#include "mozilla/BasePrincipal.h"
#include "mozilla/net/CookieSettings.h"
#include "mozilla/net/HttpBaseChannel.h"
#include "mozilla/dom/Element.h"
#include "mozilla/StaticPrefs_network.h"
#include "mozilla/StyleSheet.h"
static mozilla::LazyLogModule gReferrerInfoLog("ReferrerInfo");
#define LOG(msg) MOZ_LOG(gReferrerInfoLog, mozilla::LogLevel::Debug, msg)
#define LOG_ENABLED() MOZ_LOG_TEST(gReferrerInfoLog, mozilla::LogLevel::Debug)
using namespace mozilla::net;
namespace mozilla {
namespace dom {
// Implementation of ClassInfo is required to serialize/deserialize
NS_IMPL_CLASSINFO(ReferrerInfo, nullptr, nsIClassInfo::MAIN_THREAD_ONLY,
REFERRERINFO_CID)
NS_IMPL_ISUPPORTS_CI(ReferrerInfo, nsIReferrerInfo, nsISerializable)
#define MAX_REFERRER_SENDING_POLICY 2
#define MAX_CROSS_ORIGIN_SENDING_POLICY 2
#define MAX_TRIMMING_POLICY 2
#define MIN_REFERRER_SENDING_POLICY 0
#define MIN_CROSS_ORIGIN_SENDING_POLICY 0
#define MIN_TRIMMING_POLICY 0
struct LegacyReferrerPolicyTokenMap {
const char* mToken;
ReferrerPolicy mPolicy;
};
/*
* Parse ReferrerPolicy from token.
* The supported tokens are defined in ReferrerPolicy.webidl.
* The legacy tokens are "never", "default", "always" and
* "origin-when-crossorigin". The legacy tokens are only supported in meta
* referrer content
*
* @param aContent content string to be transformed into
* ReferrerPolicyEnum, e.g. "origin".
*/
ReferrerPolicy ReferrerPolicyFromToken(const nsAString& aContent,
bool allowedLegacyToken) {
nsString lowerContent(aContent);
ToLowerCase(lowerContent);
if (allowedLegacyToken) {
static const LegacyReferrerPolicyTokenMap sLegacyReferrerPolicyToken[] = {
{"never", ReferrerPolicy::No_referrer},
{"default", ReferrerPolicy::No_referrer_when_downgrade},
{"always", ReferrerPolicy::Unsafe_url},
{"origin-when-crossorigin", ReferrerPolicy::Origin_when_cross_origin},
};
uint8_t numStr = (sizeof(sLegacyReferrerPolicyToken) /
sizeof(sLegacyReferrerPolicyToken[0]));
for (uint8_t i = 0; i < numStr; i++) {
if (lowerContent.EqualsASCII(sLegacyReferrerPolicyToken[i].mToken)) {
return sLegacyReferrerPolicyToken[i].mPolicy;
}
}
}
// Supported tokes - ReferrerPolicyValues, are generated from
// ReferrerPolicy.webidl
for (uint8_t i = 0; ReferrerPolicyValues::strings[i].value; i++) {
if (lowerContent.EqualsASCII(ReferrerPolicyValues::strings[i].value)) {
return static_cast<enum ReferrerPolicy>(i);
}
}
// Return no referrer policy (empty string) if none of the previous match
return ReferrerPolicy::_empty;
}
// static
ReferrerPolicy ReferrerInfo::ReferrerPolicyFromMetaString(
const nsAString& aContent) {
// This is implemented as described in
// https://html.spec.whatwg.org/multipage/semantics.html#meta-referrer
// Meta referrer accepts both supported tokens in ReferrerPolicy.webidl and
// legacy tokens.
return ReferrerPolicyFromToken(aContent, true);
}
// static
ReferrerPolicy ReferrerInfo::ReferrerPolicyAttributeFromString(
const nsAString& aContent) {
// This is implemented as described in
// https://html.spec.whatwg.org/multipage/infrastructure.html#referrer-policy-attribute
// referrerpolicy attribute only accepts supported tokens in
// ReferrerPolicy.webidl
return ReferrerPolicyFromToken(aContent, false);
}
// static
ReferrerPolicy ReferrerInfo::ReferrerPolicyFromHeaderString(
const nsAString& aContent) {
// Multiple headers could be concatenated into one comma-separated
// list of policies. Need to tokenize the multiple headers.
nsCharSeparatedTokenizer tokenizer(aContent, ',');
nsAutoString token;
ReferrerPolicyEnum referrerPolicy = ReferrerPolicy::_empty;
while (tokenizer.hasMoreTokens()) {
token = tokenizer.nextToken();
if (token.IsEmpty()) {
continue;
}
// Referrer-Policy header only accepts supported tokens in
// ReferrerPolicy.webidl
ReferrerPolicyEnum policy = ReferrerPolicyFromToken(token, false);
// If there are multiple policies available, the last valid policy should be
// used.
// https://w3c.github.io/webappsec-referrer-policy/#unknown-policy-values
if (policy != ReferrerPolicy::_empty) {
referrerPolicy = policy;
}
}
return referrerPolicy;
}
// static
const char* ReferrerInfo::ReferrerPolicyToString(ReferrerPolicyEnum aPolicy) {
uint8_t index = static_cast<uint8_t>(aPolicy);
uint8_t referrerPolicyCount = ArrayLength(ReferrerPolicyValues::strings);
MOZ_ASSERT(index < referrerPolicyCount);
if (index >= referrerPolicyCount) {
return "";
}
return ReferrerPolicyValues::strings[index].value;
}
/* static */
uint32_t ReferrerInfo::GetUserReferrerSendingPolicy() {
return clamped<uint32_t>(
StaticPrefs::network_http_sendRefererHeader_DoNotUseDirectly(),
MIN_REFERRER_SENDING_POLICY, MAX_REFERRER_SENDING_POLICY);
}
/* static */
uint32_t ReferrerInfo::GetUserXOriginSendingPolicy() {
return clamped<uint32_t>(
StaticPrefs::network_http_referer_XOriginPolicy_DoNotUseDirectly(),
MIN_CROSS_ORIGIN_SENDING_POLICY, MAX_CROSS_ORIGIN_SENDING_POLICY);
}
/* static */
uint32_t ReferrerInfo::GetUserTrimmingPolicy() {
return clamped<uint32_t>(
StaticPrefs::network_http_referer_trimmingPolicy_DoNotUseDirectly(),
MIN_TRIMMING_POLICY, MAX_TRIMMING_POLICY);
}
/* static */
uint32_t ReferrerInfo::GetUserXOriginTrimmingPolicy() {
return clamped<uint32_t>(
StaticPrefs::
network_http_referer_XOriginTrimmingPolicy_DoNotUseDirectly(),
MIN_TRIMMING_POLICY, MAX_TRIMMING_POLICY);
}
/* static */
ReferrerPolicy ReferrerInfo::GetDefaultReferrerPolicy(nsIHttpChannel* aChannel,
nsIURI* aURI,
bool privateBrowsing) {
bool thirdPartyTrackerIsolated = false;
nsCOMPtr<nsILoadInfo> loadInfo;
if (aChannel) {
loadInfo = aChannel->LoadInfo();
}
nsCOMPtr<nsICookieSettings> cs;
if (loadInfo) {
Unused << loadInfo->GetCookieSettings(getter_AddRefs(cs));
}
if (!cs) {
cs = net::CookieSettings::Create();
}
if (aChannel && aURI && cs->GetRejectThirdPartyTrackers()) {
uint32_t rejectedReason = 0;
thirdPartyTrackerIsolated =
!AntiTrackingCommon::IsFirstPartyStorageAccessGrantedFor(
aChannel, aURI, &rejectedReason);
// Here we intentionally do not notify about the rejection reason, if any
// in order to avoid this check to have any visible side-effects (e.g. a
// web console report.)
}
uint32_t defaultToUse;
if (thirdPartyTrackerIsolated) {
if (privateBrowsing) {
defaultToUse =
StaticPrefs::network_http_referer_defaultPolicy_trackers_pbmode();
} else {
defaultToUse = StaticPrefs::network_http_referer_defaultPolicy_trackers();
}
} else {
if (privateBrowsing) {
defaultToUse = StaticPrefs::network_http_referer_defaultPolicy_pbmode();
} else {
defaultToUse = StaticPrefs::network_http_referer_defaultPolicy();
}
}
switch (defaultToUse) {
case DefaultReferrerPolicy::eDefaultPolicyNoReferrer:
return ReferrerPolicy::No_referrer;
case DefaultReferrerPolicy::eDefaultPolicySameOrgin:
return ReferrerPolicy::Same_origin;
case DefaultReferrerPolicy::eDefaultPolicyStrictWhenXorigin:
return ReferrerPolicy::Strict_origin_when_cross_origin;
}
return ReferrerPolicy::No_referrer_when_downgrade;
}
/* static */
bool ReferrerInfo::IsReferrerSchemeAllowed(nsIURI* aReferrer) {
NS_ENSURE_TRUE(aReferrer, false);
nsAutoCString scheme;
nsresult rv = aReferrer->GetScheme(scheme);
if (NS_WARN_IF(NS_FAILED(rv))) {
return false;
}
return scheme.EqualsIgnoreCase("https") || scheme.EqualsIgnoreCase("http") ||
scheme.EqualsIgnoreCase("ftp");
}
/* static */
bool ReferrerInfo::ShouldResponseInheritReferrerInfo(nsIChannel* aChannel) {
if (!aChannel) {
return false;
}
nsCOMPtr<nsIURI> channelURI;
nsresult rv = aChannel->GetURI(getter_AddRefs(channelURI));
NS_ENSURE_SUCCESS(rv, false);
bool isAbout = channelURI->SchemeIs("about");
if (!isAbout) {
return false;
}
nsAutoCString aboutSpec;
rv = channelURI->GetSpec(aboutSpec);
NS_ENSURE_SUCCESS(rv, false);
return aboutSpec.EqualsLiteral("about:srcdoc");
}
/* static */
nsresult ReferrerInfo::HandleSecureToInsecureReferral(
nsIURI* aOriginalURI, nsIURI* aURI, ReferrerPolicyEnum aPolicy,
bool& aAllowed) {
NS_ENSURE_ARG(aOriginalURI);
NS_ENSURE_ARG(aURI);
aAllowed = false;
bool referrerIsHttpsScheme = aOriginalURI->SchemeIs("https");
if (!referrerIsHttpsScheme) {
aAllowed = true;
return NS_OK;
}
// It's ok to send referrer for https-to-http scenarios if the referrer
// policy is "unsafe-url", "origin", or "origin-when-cross-origin".
// in other referrer policies, https->http is not allowed...
bool uriIsHttpsScheme = aURI->SchemeIs("https");
if (aPolicy != ReferrerPolicy::Unsafe_url &&
aPolicy != ReferrerPolicy::Origin_when_cross_origin &&
aPolicy != ReferrerPolicy::Origin && !uriIsHttpsScheme) {
return NS_OK;
}
aAllowed = true;
return NS_OK;
}
nsresult ReferrerInfo::HandleUserXOriginSendingPolicy(nsIURI* aURI,
nsIURI* aReferrer,
bool& aAllowed) const {
NS_ENSURE_ARG(aURI);
aAllowed = false;
nsAutoCString uriHost;
nsAutoCString referrerHost;
nsresult rv = aURI->GetAsciiHost(uriHost);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
rv = aReferrer->GetAsciiHost(referrerHost);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
// Send an empty referrer if xorigin and leaving a .onion domain.
if (StaticPrefs::network_http_referer_hideOnionSource() &&
!uriHost.Equals(referrerHost) &&
StringEndsWith(referrerHost, NS_LITERAL_CSTRING(".onion"))) {
return NS_OK;
}
switch (GetUserXOriginSendingPolicy()) {
// Check policy for sending referrer only when hosts match
case XOriginSendingPolicy::ePolicySendWhenSameHost: {
if (!uriHost.Equals(referrerHost)) {
return NS_OK;
}
break;
}
case XOriginSendingPolicy::ePolicySendWhenSameDomain: {
nsCOMPtr<nsIEffectiveTLDService> eTLDService =
do_GetService(NS_EFFECTIVETLDSERVICE_CONTRACTID);
if (!eTLDService) {
// check policy for sending only when effective top level domain
// matches. this falls back on using host if eTLDService does not work
if (!uriHost.Equals(referrerHost)) {
return NS_OK;
}
break;
}
nsAutoCString uriDomain;
nsAutoCString referrerDomain;
uint32_t extraDomains = 0;
rv = eTLDService->GetBaseDomain(aURI, extraDomains, uriDomain);
if (rv == NS_ERROR_HOST_IS_IP_ADDRESS ||
rv == NS_ERROR_INSUFFICIENT_DOMAIN_LEVELS) {
// uri is either an IP address, an alias such as 'localhost', an eTLD
// such as 'co.uk', or the empty string. Uses the normalized host in
// such cases.
rv = aURI->GetAsciiHost(uriDomain);
}
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
rv = eTLDService->GetBaseDomain(aReferrer, extraDomains, referrerDomain);
if (rv == NS_ERROR_HOST_IS_IP_ADDRESS ||
rv == NS_ERROR_INSUFFICIENT_DOMAIN_LEVELS) {
// referrer is either an IP address, an alias such as 'localhost', an
// eTLD such as 'co.uk', or the empty string. Uses the normalized host
// in such cases.
rv = aReferrer->GetAsciiHost(referrerDomain);
}
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
if (!uriDomain.Equals(referrerDomain)) {
return NS_OK;
}
break;
}
default:
break;
}
aAllowed = true;
return NS_OK;
}
/* static */
bool ReferrerInfo::ShouldSetNullOriginHeader(net::HttpBaseChannel* aChannel,
nsIURI* aOriginURI) {
MOZ_ASSERT(aChannel);
MOZ_ASSERT(aOriginURI);
if (StaticPrefs::network_http_referer_hideOnionSource()) {
nsAutoCString host;
if (NS_SUCCEEDED(aOriginURI->GetAsciiHost(host)) &&
StringEndsWith(host, NS_LITERAL_CSTRING(".onion"))) {
return ReferrerInfo::IsCrossOriginRequest(aChannel);
}
}
// When we're dealing with CORS (mode is "cors"), we shouldn't take the
// Referrer-Policy into account
uint32_t corsMode = CORS_NONE;
NS_ENSURE_SUCCESS(aChannel->GetCorsMode(&corsMode), false);
if (corsMode == CORS_USE_CREDENTIALS) {
return false;
}
nsCOMPtr<nsIReferrerInfo> referrerInfo;
NS_ENSURE_SUCCESS(aChannel->GetReferrerInfo(getter_AddRefs(referrerInfo)),
false);
if (!referrerInfo) {
return false;
}
enum ReferrerPolicy policy = referrerInfo->ReferrerPolicy();
if (policy == ReferrerPolicy::No_referrer) {
return true;
}
bool allowed = false;
nsCOMPtr<nsIURI> uri;
NS_ENSURE_SUCCESS(aChannel->GetURI(getter_AddRefs(uri)), false);
if (NS_SUCCEEDED(ReferrerInfo::HandleSecureToInsecureReferral(
aOriginURI, uri, policy, allowed)) &&
!allowed) {
return true;
}
if (policy == ReferrerPolicy::Same_origin) {
return ReferrerInfo::IsCrossOriginRequest(aChannel);
}
return false;
}
nsresult ReferrerInfo::HandleUserReferrerSendingPolicy(nsIHttpChannel* aChannel,
bool& aAllowed) const {
aAllowed = false;
uint32_t referrerSendingPolicy;
uint32_t loadFlags;
nsresult rv = aChannel->GetLoadFlags(&loadFlags);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
if (loadFlags & nsIHttpChannel::LOAD_INITIAL_DOCUMENT_URI) {
referrerSendingPolicy = ReferrerSendingPolicy::ePolicySendWhenUserTrigger;
} else {
referrerSendingPolicy = ReferrerSendingPolicy::ePolicySendInlineContent;
}
if (GetUserReferrerSendingPolicy() < referrerSendingPolicy) {
return NS_OK;
}
aAllowed = true;
return NS_OK;
}
/* static */
bool ReferrerInfo::IsCrossOriginRequest(nsIHttpChannel* aChannel) {
nsCOMPtr<nsILoadInfo> loadInfo = aChannel->LoadInfo();
if (!loadInfo->TriggeringPrincipal()->GetIsContentPrincipal()) {
LOG(("no triggering URI via loadInfo, assuming load is cross-origin"));
return true;
}
if (LOG_ENABLED()) {
nsAutoCString triggeringURISpec;
loadInfo->TriggeringPrincipal()->GetAsciiSpec(triggeringURISpec);
LOG(("triggeringURI=%s\n", triggeringURISpec.get()));
}
nsCOMPtr<nsIURI> uri;
nsresult rv = aChannel->GetURI(getter_AddRefs(uri));
if (NS_WARN_IF(NS_FAILED(rv))) {
return true;
}
bool isPrivateWin = loadInfo->GetOriginAttributes().mPrivateBrowsingId > 0;
bool isSameOrigin = false;
rv = loadInfo->TriggeringPrincipal()->IsSameOrigin(uri, isPrivateWin,
&isSameOrigin);
if (NS_WARN_IF(NS_FAILED(rv))) {
return true;
}
return !isSameOrigin;
}
ReferrerInfo::TrimmingPolicy ReferrerInfo::ComputeTrimmingPolicy(
nsIHttpChannel* aChannel) const {
uint32_t trimmingPolicy = GetUserTrimmingPolicy();
switch (mPolicy) {
case ReferrerPolicy::Origin:
case ReferrerPolicy::Strict_origin:
trimmingPolicy = TrimmingPolicy::ePolicySchemeHostPort;
break;
case ReferrerPolicy::Origin_when_cross_origin:
case ReferrerPolicy::Strict_origin_when_cross_origin:
if (trimmingPolicy != TrimmingPolicy::ePolicySchemeHostPort &&
IsCrossOriginRequest(aChannel)) {
// Ignore set trimmingPolicy if it is already the strictest
// policy.
trimmingPolicy = TrimmingPolicy::ePolicySchemeHostPort;
}
break;
// This function is called when a nonempty referrer value is allowed to
// send. For the next 3 policies: same-origin, no-referrer-when-downgrade,
// unsafe-url, without trimming we should have a full uri. And the trimming
// policy only depends on user prefs.
case ReferrerPolicy::Same_origin:
case ReferrerPolicy::No_referrer_when_downgrade:
case ReferrerPolicy::Unsafe_url:
if (trimmingPolicy != TrimmingPolicy::ePolicySchemeHostPort) {
// Ignore set trimmingPolicy if it is already the strictest
// policy. Apply the user cross-origin trimming policy if it's more
// restrictive than the general one.
if (GetUserXOriginTrimmingPolicy() != TrimmingPolicy::ePolicyFullURI &&
IsCrossOriginRequest(aChannel)) {
trimmingPolicy =
std::max(trimmingPolicy, GetUserXOriginTrimmingPolicy());
}
}
break;
case ReferrerPolicy::No_referrer:
case ReferrerPolicy::_empty:
default:
MOZ_ASSERT_UNREACHABLE("Unexpected value");
break;
}
return static_cast<TrimmingPolicy>(trimmingPolicy);
}
nsresult ReferrerInfo::LimitReferrerLength(
nsIHttpChannel* aChannel, nsIURI* aReferrer, TrimmingPolicy aTrimmingPolicy,
nsACString& aInAndOutTrimmedReferrer) const {
if (!StaticPrefs::network_http_referer_referrerLengthLimit()) {
return NS_OK;
}
if (aInAndOutTrimmedReferrer.Length() <=
StaticPrefs::network_http_referer_referrerLengthLimit()) {
return NS_OK;
}
nsAutoString referrerLengthLimit;
referrerLengthLimit.AppendInt(
StaticPrefs::network_http_referer_referrerLengthLimit());
if (aTrimmingPolicy == ePolicyFullURI ||
aTrimmingPolicy == ePolicySchemeHostPortPath) {
// If referrer header is over max Length, down to origin
nsresult rv = GetOriginFromReferrerURI(aReferrer, aInAndOutTrimmedReferrer);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
// Step 6 within https://w3c.github.io/webappsec-referrer-policy/#strip-url
// states that the trailing "/" does not need to get stripped. However,
// GetOriginFromReferrerURI() also removes any trailing "/" hence we have to
// add it back here.
aInAndOutTrimmedReferrer.AppendLiteral("/");
if (aInAndOutTrimmedReferrer.Length() <=
StaticPrefs::network_http_referer_referrerLengthLimit()) {
AutoTArray<nsString, 2> params = {
referrerLengthLimit, NS_ConvertUTF8toUTF16(aInAndOutTrimmedReferrer)};
LogMessageToConsole(aChannel, "ReferrerLengthOverLimitation", params);
return NS_OK;
}
}
// If we end up here either the trimmingPolicy is equal to
// 'ePolicySchemeHostPort' or the 'origin' of any other policy is still over
// the length limit. If so, truncate the referrer entirely.
AutoTArray<nsString, 2> params = {
referrerLengthLimit, NS_ConvertUTF8toUTF16(aInAndOutTrimmedReferrer)};
LogMessageToConsole(aChannel, "ReferrerOriginLengthOverLimitation", params);
aInAndOutTrimmedReferrer.Truncate();
return NS_OK;
}
nsresult ReferrerInfo::GetOriginFromReferrerURI(nsIURI* aReferrer,
nsACString& aResult) const {
MOZ_ASSERT(aReferrer);
aResult.Truncate();
// We want the IDN-normalized PrePath. That's not something currently
// available and there doesn't yet seem to be justification for adding it to
// the interfaces, so just build it up from scheme+AsciiHostPort
nsAutoCString scheme, asciiHostPort;
nsresult rv = aReferrer->GetScheme(scheme);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
aResult = scheme;
aResult.AppendLiteral("://");
// Note we explicitly cleared UserPass above, so do not need to build it.
rv = aReferrer->GetAsciiHostPort(asciiHostPort);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
aResult.Append(asciiHostPort);
return NS_OK;
}
nsresult ReferrerInfo::TrimReferrerWithPolicy(nsIURI* aReferrer,
TrimmingPolicy aTrimmingPolicy,
nsACString& aResult) const {
MOZ_ASSERT(aReferrer);
if (aTrimmingPolicy == TrimmingPolicy::ePolicyFullURI) {
return aReferrer->GetAsciiSpec(aResult);
}
nsresult rv = GetOriginFromReferrerURI(aReferrer, aResult);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
if (aTrimmingPolicy == TrimmingPolicy::ePolicySchemeHostPortPath) {
nsCOMPtr<nsIURL> url(do_QueryInterface(aReferrer));
if (url) {
nsAutoCString path;
rv = url->GetFilePath(path);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
aResult.Append(path);
return NS_OK;
}
}
// Step 6 within https://w3c.github.io/webappsec-referrer-policy/#strip-url
// states that the trailing "/" does not need to get stripped. However,
// GetOriginFromReferrerURI() also removes any trailing "/" hence we have to
// add it back here.
aResult.AppendLiteral("/");
return NS_OK;
}
void ReferrerInfo::LogMessageToConsole(
nsIHttpChannel* aChannel, const char* aMsg,
const nsTArray<nsString>& aParams) const {
MOZ_ASSERT(aChannel);
nsCOMPtr<nsIURI> uri;
nsresult rv = aChannel->GetURI(getter_AddRefs(uri));
if (NS_WARN_IF(NS_FAILED(rv))) {
return;
}
uint64_t windowID = 0;
rv = aChannel->GetTopLevelContentWindowId(&windowID);
if (NS_WARN_IF(NS_FAILED(rv))) {
return;
}
if (!windowID) {
nsCOMPtr<nsILoadGroup> loadGroup;
rv = aChannel->GetLoadGroup(getter_AddRefs(loadGroup));
if (NS_WARN_IF(NS_FAILED(rv))) {
return;
}
if (loadGroup) {
windowID = nsContentUtils::GetInnerWindowID(loadGroup);
}
}
nsAutoString localizedMsg;
rv = nsContentUtils::FormatLocalizedString(
nsContentUtils::eSECURITY_PROPERTIES, aMsg, aParams, localizedMsg);
if (NS_WARN_IF(NS_FAILED(rv))) {
return;
}
rv = nsContentUtils::ReportToConsoleByWindowID(
localizedMsg, nsIScriptError::infoFlag, NS_LITERAL_CSTRING("Security"),
windowID, uri);
Unused << NS_WARN_IF(NS_FAILED(rv));
}
ReferrerPolicy ReferrerPolicyIDLToReferrerPolicy(
nsIReferrerInfo::ReferrerPolicyIDL aReferrerPolicy) {
switch (aReferrerPolicy) {
case nsIReferrerInfo::EMPTY:
return ReferrerPolicy::_empty;
break;
case nsIReferrerInfo::NO_REFERRER:
return ReferrerPolicy::No_referrer;
break;
case nsIReferrerInfo::NO_REFERRER_WHEN_DOWNGRADE:
return ReferrerPolicy::No_referrer_when_downgrade;
break;
case nsIReferrerInfo::ORIGIN:
return ReferrerPolicy::Origin;
break;
case nsIReferrerInfo::ORIGIN_WHEN_CROSS_ORIGIN:
return ReferrerPolicy::Origin_when_cross_origin;
break;
case nsIReferrerInfo::UNSAFE_URL:
return ReferrerPolicy::Unsafe_url;
break;
case nsIReferrerInfo::SAME_ORIGIN:
return ReferrerPolicy::Same_origin;
break;
case nsIReferrerInfo::STRICT_ORIGIN:
return ReferrerPolicy::Strict_origin;
break;
case nsIReferrerInfo::STRICT_ORIGIN_WHEN_CROSS_ORIGIN:
return ReferrerPolicy::Strict_origin_when_cross_origin;
break;
default:
MOZ_ASSERT_UNREACHABLE("Invalid ReferrerPolicy value");
break;
}
return ReferrerPolicy::_empty;
}
nsIReferrerInfo::ReferrerPolicyIDL ReferrerPolicyToReferrerPolicyIDL(
ReferrerPolicy aReferrerPolicy) {
switch (aReferrerPolicy) {
case ReferrerPolicy::_empty:
return nsIReferrerInfo::EMPTY;
break;
case ReferrerPolicy::No_referrer:
return nsIReferrerInfo::NO_REFERRER;
break;
case ReferrerPolicy::No_referrer_when_downgrade:
return nsIReferrerInfo::NO_REFERRER_WHEN_DOWNGRADE;
break;
case ReferrerPolicy::Origin:
return nsIReferrerInfo::ORIGIN;
break;
case ReferrerPolicy::Origin_when_cross_origin:
return nsIReferrerInfo::ORIGIN_WHEN_CROSS_ORIGIN;
break;
case ReferrerPolicy::Unsafe_url:
return nsIReferrerInfo::UNSAFE_URL;
break;
case ReferrerPolicy::Same_origin:
return nsIReferrerInfo::SAME_ORIGIN;
break;
case ReferrerPolicy::Strict_origin:
return nsIReferrerInfo::STRICT_ORIGIN;
break;
case ReferrerPolicy::Strict_origin_when_cross_origin:
return nsIReferrerInfo::STRICT_ORIGIN_WHEN_CROSS_ORIGIN;
break;
default:
MOZ_ASSERT_UNREACHABLE("Invalid ReferrerPolicy value");
break;
}
return nsIReferrerInfo::EMPTY;
}
ReferrerInfo::ReferrerInfo()
: mOriginalReferrer(nullptr),
mPolicy(ReferrerPolicy::_empty),
mSendReferrer(true),
mInitialized(false),
mOverridePolicyByDefault(false),
mComputedReferrer(Maybe<nsCString>()) {}
ReferrerInfo::ReferrerInfo(nsIURI* aOriginalReferrer,
ReferrerPolicyEnum aPolicy, bool aSendReferrer,
const Maybe<nsCString>& aComputedReferrer)
: mOriginalReferrer(aOriginalReferrer),
mPolicy(aPolicy),
mSendReferrer(aSendReferrer),
mInitialized(true),
mOverridePolicyByDefault(false),
mComputedReferrer(aComputedReferrer) {}
ReferrerInfo::ReferrerInfo(const ReferrerInfo& rhs)
: mOriginalReferrer(rhs.mOriginalReferrer),
mPolicy(rhs.mPolicy),
mSendReferrer(rhs.mSendReferrer),
mInitialized(rhs.mInitialized),
mOverridePolicyByDefault(rhs.mOverridePolicyByDefault),
mComputedReferrer(rhs.mComputedReferrer) {}
already_AddRefed<nsIReferrerInfo> ReferrerInfo::Clone() const {
RefPtr<ReferrerInfo> copy(new ReferrerInfo(*this));
return copy.forget();
}
already_AddRefed<nsIReferrerInfo> ReferrerInfo::CloneWithNewPolicy(
ReferrerPolicyEnum aPolicy) const {
RefPtr<ReferrerInfo> copy(new ReferrerInfo(*this));
copy->mPolicy = aPolicy;
return copy.forget();
}
already_AddRefed<nsIReferrerInfo> ReferrerInfo::CloneWithNewSendReferrer(
bool aSendReferrer) const {
RefPtr<ReferrerInfo> copy(new ReferrerInfo(*this));
copy->mSendReferrer = aSendReferrer;
return copy.forget();
}
already_AddRefed<nsIReferrerInfo> ReferrerInfo::CloneWithNewOriginalReferrer(
nsIURI* aOriginalReferrer) const {
RefPtr<ReferrerInfo> copy(new ReferrerInfo(*this));
copy->mOriginalReferrer = aOriginalReferrer;
return copy.forget();
}
NS_IMETHODIMP
ReferrerInfo::GetOriginalReferrer(nsIURI** aOriginalReferrer) {
*aOriginalReferrer = mOriginalReferrer;
NS_IF_ADDREF(*aOriginalReferrer);
return NS_OK;
}
NS_IMETHODIMP
ReferrerInfo::GetReferrerPolicy(
JSContext* aCx, nsIReferrerInfo::ReferrerPolicyIDL* aReferrerPolicy) {
*aReferrerPolicy = ReferrerPolicyToReferrerPolicyIDL(mPolicy);
return NS_OK;
}
NS_IMETHODIMP
ReferrerInfo::GetReferrerPolicyString(nsACString& aResult) {
aResult.AssignASCII(ReferrerPolicyToString(mPolicy));
return NS_OK;
}
ReferrerPolicy ReferrerInfo::ReferrerPolicy() { return mPolicy; }
NS_IMETHODIMP
ReferrerInfo::GetSendReferrer(bool* aSendReferrer) {
*aSendReferrer = mSendReferrer;
return NS_OK;
}
NS_IMETHODIMP
ReferrerInfo::Equals(nsIReferrerInfo* aOther, bool* aResult) {
NS_ENSURE_TRUE(aOther, NS_ERROR_INVALID_ARG);
MOZ_ASSERT(mInitialized);
if (aOther == this) {
*aResult = true;
return NS_OK;
}
*aResult = false;
ReferrerInfo* other = static_cast<ReferrerInfo*>(aOther);
MOZ_ASSERT(other->mInitialized);
if (mPolicy != other->mPolicy || mSendReferrer != other->mSendReferrer ||
mOverridePolicyByDefault != other->mOverridePolicyByDefault ||
mComputedReferrer != other->mComputedReferrer) {
return NS_OK;
}
if (!mOriginalReferrer != !other->mOriginalReferrer) {
// One or the other has mOriginalReferrer, but not both... not equal
return NS_OK;
}
bool originalReferrerEquals;
if (mOriginalReferrer &&
(NS_FAILED(mOriginalReferrer->Equals(other->mOriginalReferrer,
&originalReferrerEquals)) ||
!originalReferrerEquals)) {
return NS_OK;
}
*aResult = true;
return NS_OK;
}
NS_IMETHODIMP
ReferrerInfo::GetComputedReferrerSpec(nsAString& aComputedReferrerSpec) {
aComputedReferrerSpec.Assign(
mComputedReferrer.isSome()
? NS_ConvertUTF8toUTF16(mComputedReferrer.value())
: EmptyString());
return NS_OK;
}
already_AddRefed<nsIURI> ReferrerInfo::GetComputedReferrer() {
if (!mComputedReferrer.isSome() || mComputedReferrer.value().IsEmpty()) {
return nullptr;
}
nsCOMPtr<nsIURI> result;
nsresult rv = NS_NewURI(getter_AddRefs(result), mComputedReferrer.value());
if (NS_FAILED(rv)) {
return nullptr;
}
return result.forget();
}
HashNumber ReferrerInfo::Hash() const {
MOZ_ASSERT(mInitialized);
nsAutoCString originalReferrerSpec;
if (mOriginalReferrer) {
Unused << mOriginalReferrer->GetSpec(originalReferrerSpec);
}
return mozilla::AddToHash(
static_cast<uint32_t>(mPolicy), mSendReferrer, mOverridePolicyByDefault,
mozilla::HashString(originalReferrerSpec),
mozilla::HashString(mComputedReferrer.isSome() ? mComputedReferrer.value()
: EmptyCString()));
}
NS_IMETHODIMP
ReferrerInfo::Init(nsIReferrerInfo::ReferrerPolicyIDL aReferrerPolicy,
bool aSendReferrer, nsIURI* aOriginalReferrer,
JSContext* aCx) {
MOZ_ASSERT(!mInitialized);
if (mInitialized) {
return NS_ERROR_ALREADY_INITIALIZED;
};
mPolicy = ReferrerPolicyIDLToReferrerPolicy(aReferrerPolicy);
mSendReferrer = aSendReferrer;
mOriginalReferrer = aOriginalReferrer;
mInitialized = true;
return NS_OK;
}
NS_IMETHODIMP
ReferrerInfo::InitWithDocument(Document* aDocument) {
MOZ_ASSERT(!mInitialized);
if (mInitialized) {
return NS_ERROR_ALREADY_INITIALIZED;
};
mPolicy = aDocument->GetReferrerPolicy();
mSendReferrer = true;
mOriginalReferrer = aDocument->GetDocumentURIAsReferrer();
mInitialized = true;
return NS_OK;
}
NS_IMETHODIMP
ReferrerInfo::InitWithNode(nsINode* aNode) {
MOZ_ASSERT(!mInitialized);
if (mInitialized) {
return NS_ERROR_ALREADY_INITIALIZED;
};
// Referrer policy from referrerpolicy attribute will have a higher priority
// than referrer policy from <meta> tag and Referrer-Policy header.
GetReferrerPolicyFromAtribute(aNode, mPolicy);
if (mPolicy == ReferrerPolicy::_empty) {
// Fallback to use document's referrer poicy if we don't have referrer
// policy from attribute.
mPolicy = aNode->OwnerDoc()->GetReferrerPolicy();
}
mSendReferrer = !HasRelNoReferrer(aNode);
mOriginalReferrer = aNode->OwnerDoc()->GetDocumentURIAsReferrer();
mInitialized = true;
return NS_OK;
}
/* static */
already_AddRefed<nsIReferrerInfo>
ReferrerInfo::CreateFromOtherAndPolicyOverride(
nsIReferrerInfo* aOther, ReferrerPolicyEnum aPolicyOverride) {
MOZ_ASSERT(aOther);
ReferrerPolicyEnum policy = aPolicyOverride != ReferrerPolicy::_empty
? aPolicyOverride
: aOther->ReferrerPolicy();
nsCOMPtr<nsIURI> referrer = aOther->GetOriginalReferrer();
nsCOMPtr<nsIReferrerInfo> referrerInfo =
new ReferrerInfo(referrer, policy, aOther->GetSendReferrer());
return referrerInfo.forget();
}