forked from mirrors/gecko-dev
3fb6190ec6
Differential Revision: https://phabricator.services.mozilla.com/D39378 --HG-- extra : moz-landing-system : lando
2050 lines
73 KiB
C++
2050 lines
73 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "AntiTrackingCommon.h"
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#include "mozilla/dom/ContentChild.h"
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#include "mozilla/ipc/MessageChannel.h"
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#include "mozilla/AbstractThread.h"
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#include "mozilla/HashFunctions.h"
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#include "mozilla/IntegerPrintfMacros.h"
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#include "mozilla/Logging.h"
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#include "mozilla/MruCache.h"
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#include "mozilla/Pair.h"
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#include "mozilla/StaticPrefs_browser.h"
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#include "mozilla/StaticPrefs_extensions.h"
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#include "mozilla/StaticPrefs_privacy.h"
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#include "mozIThirdPartyUtil.h"
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#include "nsContentUtils.h"
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#include "nsGlobalWindowInner.h"
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#include "nsICookiePermission.h"
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#include "nsICookieService.h"
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#include "nsIDocShell.h"
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#include "nsIHttpChannelInternal.h"
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#include "nsIIOService.h"
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#include "nsIParentChannel.h"
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#include "nsIPermission.h"
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#include "nsPermissionManager.h"
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#include "nsIPrincipal.h"
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#include "nsIScriptError.h"
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#include "nsIURI.h"
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#include "nsIURIFixup.h"
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#include "nsIURL.h"
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#include "nsIWebProgressListener.h"
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#include "nsNetUtil.h"
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#include "nsPIDOMWindow.h"
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#include "nsPrintfCString.h"
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#include "nsScriptSecurityManager.h"
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#include "nsSandboxFlags.h"
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#include "prtime.h"
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#define ANTITRACKING_PERM_KEY "3rdPartyStorage"
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using namespace mozilla;
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using mozilla::dom::ContentChild;
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using mozilla::dom::Document;
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static LazyLogModule gAntiTrackingLog("AntiTracking");
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static const nsCString::size_type sMaxSpecLength = 128;
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static const uint32_t kMaxConsoleOutputDelayMs = 100;
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#define LOG(format) MOZ_LOG(gAntiTrackingLog, mozilla::LogLevel::Debug, format)
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#define LOG_SPEC(format, uri) \
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PR_BEGIN_MACRO \
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if (MOZ_LOG_TEST(gAntiTrackingLog, mozilla::LogLevel::Debug)) { \
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nsAutoCString _specStr(NS_LITERAL_CSTRING("(null)")); \
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_specStr.Truncate(std::min(_specStr.Length(), sMaxSpecLength)); \
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if (uri) { \
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_specStr = uri->GetSpecOrDefault(); \
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} \
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const char* _spec = _specStr.get(); \
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LOG(format); \
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} \
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PR_END_MACRO
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namespace {
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UniquePtr<nsTArray<AntiTrackingCommon::AntiTrackingSettingsChangedCallback>>
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gSettingsChangedCallbacks;
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bool GetParentPrincipalAndTrackingOrigin(
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nsGlobalWindowInner* a3rdPartyTrackingWindow, uint32_t aBehavior,
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nsIPrincipal** aTopLevelStoragePrincipal, nsACString& aTrackingOrigin,
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nsIURI** aTrackingURI, nsIPrincipal** aTrackingPrincipal) {
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Document* doc = a3rdPartyTrackingWindow->GetDocument();
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// Make sure storage access isn't disabled
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if (doc && (doc->StorageAccessSandboxed() ||
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nsContentUtils::IsInPrivateBrowsing(doc))) {
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return false;
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}
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// Now we need the principal and the origin of the parent window.
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nsCOMPtr<nsIPrincipal> topLevelStoragePrincipal =
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// Use the "top-level storage area principal" behaviour in reject tracker
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// mode only.
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(aBehavior == nsICookieService::BEHAVIOR_REJECT_TRACKER)
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? a3rdPartyTrackingWindow->GetTopLevelStorageAreaPrincipal()
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: a3rdPartyTrackingWindow->GetTopLevelPrincipal();
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if (!topLevelStoragePrincipal) {
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LOG(("No top-level storage area principal at hand"));
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return false;
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}
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// Let's take the principal and the origin of the tracker.
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nsCOMPtr<nsIPrincipal> trackingPrincipal =
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a3rdPartyTrackingWindow->GetPrincipal();
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if (NS_WARN_IF(!trackingPrincipal)) {
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return false;
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}
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nsCOMPtr<nsIURI> trackingURI;
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nsresult rv = trackingPrincipal->GetURI(getter_AddRefs(trackingURI));
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if (NS_WARN_IF(NS_FAILED(rv))) {
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return false;
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}
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rv = trackingPrincipal->GetOriginNoSuffix(aTrackingOrigin);
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if (NS_WARN_IF(NS_FAILED(rv))) {
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return false;
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}
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topLevelStoragePrincipal.forget(aTopLevelStoragePrincipal);
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if (aTrackingURI) {
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trackingURI.forget(aTrackingURI);
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}
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if (aTrackingPrincipal) {
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trackingPrincipal.forget(aTrackingPrincipal);
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}
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return true;
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};
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void CreatePermissionKey(const nsCString& aTrackingOrigin,
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nsACString& aPermissionKey) {
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MOZ_ASSERT(aPermissionKey.IsEmpty());
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static const nsLiteralCString prefix =
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NS_LITERAL_CSTRING(ANTITRACKING_PERM_KEY "^");
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aPermissionKey.SetCapacity(prefix.Length() + aTrackingOrigin.Length());
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aPermissionKey.Append(prefix);
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aPermissionKey.Append(aTrackingOrigin);
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}
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void CreatePermissionKey(const nsCString& aTrackingOrigin,
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const nsCString& aGrantedOrigin,
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nsACString& aPermissionKey) {
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MOZ_ASSERT(aPermissionKey.IsEmpty());
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if (aTrackingOrigin == aGrantedOrigin) {
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CreatePermissionKey(aTrackingOrigin, aPermissionKey);
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return;
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}
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static const nsLiteralCString prefix =
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NS_LITERAL_CSTRING(ANTITRACKING_PERM_KEY "^");
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aPermissionKey.SetCapacity(prefix.Length() + 1 + aTrackingOrigin.Length() +
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aGrantedOrigin.Length());
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aPermissionKey.Append(prefix);
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aPermissionKey.Append(aTrackingOrigin);
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aPermissionKey.AppendLiteral("^");
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aPermissionKey.Append(aGrantedOrigin);
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}
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// This internal method returns ACCESS_DENY if the access is denied,
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// ACCESS_DEFAULT if unknown, some other access code if granted.
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uint32_t CheckCookiePermissionForPrincipal(nsICookieSettings* aCookieSettings,
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nsIPrincipal* aPrincipal) {
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MOZ_ASSERT(aCookieSettings);
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MOZ_ASSERT(aPrincipal);
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uint32_t cookiePermission = nsICookiePermission::ACCESS_DEFAULT;
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if (!aPrincipal->GetIsContentPrincipal()) {
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return cookiePermission;
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}
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nsresult rv =
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aCookieSettings->CookiePermission(aPrincipal, &cookiePermission);
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if (NS_WARN_IF(NS_FAILED(rv))) {
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return nsICookiePermission::ACCESS_DEFAULT;
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}
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// If we have a custom cookie permission, let's use it.
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return cookiePermission;
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}
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int32_t CookiesBehavior(Document* aTopLevelDocument,
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Document* a3rdPartyDocument) {
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MOZ_ASSERT(aTopLevelDocument);
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MOZ_ASSERT(a3rdPartyDocument);
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// Override the cookiebehavior to accept if the top level document has
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// an extension principal (if the static pref has been set to true
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// to force the old behavior here, See Bug 1525917).
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// This block (and the static pref) should be removed as part of
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// Bug 1537753.
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if (StaticPrefs::extensions_cookiesBehavior_overrideOnTopLevel() &&
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BasePrincipal::Cast(aTopLevelDocument->NodePrincipal())->AddonPolicy()) {
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return nsICookieService::BEHAVIOR_ACCEPT;
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}
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// WebExtensions principals always get BEHAVIOR_ACCEPT as cookieBehavior
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// (See Bug 1406675 and Bug 1525917 for rationale).
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if (BasePrincipal::Cast(a3rdPartyDocument->NodePrincipal())->AddonPolicy()) {
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return nsICookieService::BEHAVIOR_ACCEPT;
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}
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return a3rdPartyDocument->CookieSettings()->GetCookieBehavior();
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}
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int32_t CookiesBehavior(nsILoadInfo* aLoadInfo,
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nsIPrincipal* aTopLevelPrincipal,
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nsIURI* a3rdPartyURI) {
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MOZ_ASSERT(aLoadInfo);
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MOZ_ASSERT(aTopLevelPrincipal);
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MOZ_ASSERT(a3rdPartyURI);
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// Override the cookiebehavior to accept if the top level principal is
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// an extension principal (if the static pref has been turned to true
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// to force the old behavior here, See Bug 1525917).
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// This block (and the static pref) should be removed as part of
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// Bug 1537753.
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if (StaticPrefs::extensions_cookiesBehavior_overrideOnTopLevel() &&
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BasePrincipal::Cast(aTopLevelPrincipal)->AddonPolicy()) {
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return nsICookieService::BEHAVIOR_ACCEPT;
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}
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// WebExtensions 3rd party URI always get BEHAVIOR_ACCEPT as cookieBehavior,
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// this is semantically equivalent to the principal having a AddonPolicy().
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bool is3rdPartyMozExt = false;
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if (NS_SUCCEEDED(
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a3rdPartyURI->SchemeIs("moz-extension", &is3rdPartyMozExt)) &&
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is3rdPartyMozExt) {
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return nsICookieService::BEHAVIOR_ACCEPT;
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}
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nsCOMPtr<nsICookieSettings> cookieSettings;
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nsresult rv = aLoadInfo->GetCookieSettings(getter_AddRefs(cookieSettings));
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if (NS_WARN_IF(NS_FAILED(rv))) {
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return nsICookieService::BEHAVIOR_REJECT;
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}
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return cookieSettings->GetCookieBehavior();
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}
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int32_t CookiesBehavior(nsIPrincipal* aPrincipal,
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nsICookieSettings* aCookieSettings) {
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MOZ_ASSERT(aPrincipal);
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MOZ_ASSERT(aCookieSettings);
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// WebExtensions principals always get BEHAVIOR_ACCEPT as cookieBehavior
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// (See Bug 1406675 for rationale).
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if (BasePrincipal::Cast(aPrincipal)->AddonPolicy()) {
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return nsICookieService::BEHAVIOR_ACCEPT;
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}
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return aCookieSettings->GetCookieBehavior();
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}
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struct ContentBlockingAllowListKey {
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ContentBlockingAllowListKey() : mHash(mozilla::HashGeneric(uintptr_t(0))) {}
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// Ensure that we compute a different hash for window and channel pointers of
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// the same numeric value, in the off chance that we get unlucky and encounter
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// a case where the allocator reallocates a window object where a channel used
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// to live and vice versa.
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explicit ContentBlockingAllowListKey(nsPIDOMWindowInner* aWindow)
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: mHash(mozilla::AddToHash(aWindow->WindowID(),
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mozilla::HashString("window"))) {}
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explicit ContentBlockingAllowListKey(nsIHttpChannel* aChannel)
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: mHash(mozilla::AddToHash(aChannel->ChannelId(),
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mozilla::HashString("channel"))) {}
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ContentBlockingAllowListKey(const ContentBlockingAllowListKey& aRHS)
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: mHash(aRHS.mHash) {}
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bool operator==(const ContentBlockingAllowListKey& aRHS) const {
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return mHash == aRHS.mHash;
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}
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HashNumber GetHash() const { return mHash; }
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private:
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HashNumber mHash;
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};
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struct ContentBlockingAllowListEntry {
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ContentBlockingAllowListEntry() : mResult(false) {}
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ContentBlockingAllowListEntry(nsPIDOMWindowInner* aWindow, bool aResult)
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: mKey(aWindow), mResult(aResult) {}
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ContentBlockingAllowListEntry(nsIHttpChannel* aChannel, bool aResult)
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: mKey(aChannel), mResult(aResult) {}
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ContentBlockingAllowListKey mKey;
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bool mResult;
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};
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struct ContentBlockingAllowListCache
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: MruCache<ContentBlockingAllowListKey, ContentBlockingAllowListEntry,
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ContentBlockingAllowListCache> {
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static HashNumber Hash(const ContentBlockingAllowListKey& aKey) {
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return aKey.GetHash();
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}
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static bool Match(const ContentBlockingAllowListKey& aKey,
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const ContentBlockingAllowListEntry& aValue) {
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return aValue.mKey == aKey;
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}
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};
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ContentBlockingAllowListCache& GetContentBlockingAllowListCache() {
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static bool initialized = false;
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static ContentBlockingAllowListCache cache;
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if (!initialized) {
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AntiTrackingCommon::OnAntiTrackingSettingsChanged([&] {
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// Drop everything in the cache, since the result of content blocking
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// allow list checks may change past this point.
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cache.Clear();
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});
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initialized = true;
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}
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return cache;
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}
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bool CheckContentBlockingAllowList(nsIURI* aTopWinURI,
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bool aIsPrivateBrowsing) {
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bool isAllowed = false;
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nsresult rv = AntiTrackingCommon::IsOnContentBlockingAllowList(
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aTopWinURI, aIsPrivateBrowsing, AntiTrackingCommon::eStorageChecks,
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isAllowed);
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if (NS_SUCCEEDED(rv) && isAllowed) {
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LOG_SPEC(
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("The top-level window (%s) is on the content blocking allow list, "
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"bail out early",
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_spec),
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aTopWinURI);
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return true;
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}
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if (NS_FAILED(rv)) {
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LOG_SPEC(
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("Checking the content blocking allow list for %s failed with %" PRIx32,
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_spec, static_cast<uint32_t>(rv)),
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aTopWinURI);
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}
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return false;
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}
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bool CheckContentBlockingAllowList(nsPIDOMWindowInner* aWindow) {
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ContentBlockingAllowListKey cacheKey(aWindow);
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auto entry = GetContentBlockingAllowListCache().Lookup(cacheKey);
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if (entry) {
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// We've recently performed a content blocking allow list check for this
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// window, so let's quickly return the answer instead of continuing with the
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// rest of this potentially expensive computation.
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return entry.Data().mResult;
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}
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nsPIDOMWindowOuter* top = aWindow->GetInProcessScriptableTop();
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if (top) {
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nsIURI* topWinURI = top->GetDocumentURI();
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Document* doc = top->GetExtantDoc();
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bool isPrivateBrowsing =
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doc ? nsContentUtils::IsInPrivateBrowsing(doc) : false;
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const bool result =
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CheckContentBlockingAllowList(topWinURI, isPrivateBrowsing);
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entry.Set(ContentBlockingAllowListEntry(aWindow, result));
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return result;
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}
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LOG(
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("Could not check the content blocking allow list because the top "
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"window wasn't accessible"));
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entry.Set(ContentBlockingAllowListEntry(aWindow, false));
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return false;
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}
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bool CheckContentBlockingAllowList(nsIHttpChannel* aChannel) {
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ContentBlockingAllowListKey cacheKey(aChannel);
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auto entry = GetContentBlockingAllowListCache().Lookup(cacheKey);
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if (entry) {
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// We've recently performed a content blocking allow list check for this
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// channel, so let's quickly return the answer instead of continuing with
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// the rest of this potentially expensive computation.
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return entry.Data().mResult;
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}
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nsCOMPtr<nsILoadInfo> loadInfo = aChannel->LoadInfo();
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nsContentPolicyType contentPolicyType =
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loadInfo->GetExternalContentPolicyType();
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nsCOMPtr<nsIURI> uri;
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// This is the top-level request. Let's use the channel URI.
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if (contentPolicyType == nsIContentPolicy::TYPE_DOCUMENT) {
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nsresult rv = NS_GetFinalChannelURI(aChannel, getter_AddRefs(uri));
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if (NS_WARN_IF(NS_FAILED(rv)) || !uri) {
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LOG(
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("Could not check the content blocking allow list because the "
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"channel URI is not accessible"));
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entry.Set(ContentBlockingAllowListEntry(aChannel, false));
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return false;
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}
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} else {
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nsCOMPtr<nsIHttpChannelInternal> chan = do_QueryInterface(aChannel);
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MOZ_ASSERT(chan);
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nsresult rv = chan->GetTopWindowURI(getter_AddRefs(uri));
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if (NS_FAILED(rv) || !uri) {
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LOG(
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("Could not check the content blocking allow list because the top "
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"window wasn't accessible"));
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entry.Set(ContentBlockingAllowListEntry(aChannel, false));
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return false;
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}
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}
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MOZ_ASSERT(uri);
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const bool result =
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CheckContentBlockingAllowList(uri, NS_UsePrivateBrowsing(aChannel));
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entry.Set(ContentBlockingAllowListEntry(aChannel, result));
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return result;
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}
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void ReportBlockingToConsole(nsPIDOMWindowOuter* aWindow, nsIURI* aURI,
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uint32_t aRejectedReason) {
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MOZ_ASSERT(aWindow && aURI);
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MOZ_ASSERT(
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aRejectedReason == 0 ||
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aRejectedReason ==
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nsIWebProgressListener::STATE_COOKIES_BLOCKED_BY_PERMISSION ||
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aRejectedReason ==
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nsIWebProgressListener::STATE_COOKIES_BLOCKED_TRACKER ||
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aRejectedReason ==
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nsIWebProgressListener::STATE_COOKIES_PARTITIONED_FOREIGN ||
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aRejectedReason == nsIWebProgressListener::STATE_COOKIES_BLOCKED_ALL ||
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aRejectedReason == nsIWebProgressListener::STATE_COOKIES_BLOCKED_FOREIGN);
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nsCOMPtr<nsIDocShell> docShell = aWindow->GetDocShell();
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if (NS_WARN_IF(!docShell)) {
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return;
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}
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RefPtr<Document> doc = docShell->GetDocument();
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if (NS_WARN_IF(!doc)) {
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return;
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}
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nsAutoString sourceLine;
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uint32_t lineNumber = 0, columnNumber = 0;
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JSContext* cx = nsContentUtils::GetCurrentJSContext();
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if (cx) {
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nsJSUtils::GetCallingLocation(cx, sourceLine, &lineNumber, &columnNumber);
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}
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nsCOMPtr<nsIURI> uri(aURI);
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nsresult rv = NS_DispatchToCurrentThreadQueue(
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NS_NewRunnableFunction(
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"ReportBlockingToConsoleDelayed",
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[doc, sourceLine, lineNumber, columnNumber, uri, aRejectedReason]() {
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const char* message = nullptr;
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nsAutoCString category;
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switch (aRejectedReason) {
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case nsIWebProgressListener::STATE_COOKIES_BLOCKED_BY_PERMISSION:
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message = "CookieBlockedByPermission";
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category = NS_LITERAL_CSTRING("cookieBlockedPermission");
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break;
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case nsIWebProgressListener::STATE_COOKIES_BLOCKED_TRACKER:
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message = "CookieBlockedTracker";
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category = NS_LITERAL_CSTRING("cookieBlockedTracker");
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break;
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case nsIWebProgressListener::STATE_COOKIES_BLOCKED_ALL:
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message = "CookieBlockedAll";
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category = NS_LITERAL_CSTRING("cookieBlockedAll");
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break;
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case nsIWebProgressListener::STATE_COOKIES_BLOCKED_FOREIGN:
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message = "CookieBlockedForeign";
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category = NS_LITERAL_CSTRING("cookieBlockedForeign");
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break;
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default:
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return;
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}
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MOZ_ASSERT(message);
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// Strip the URL of any possible username/password and make it ready
|
|
// to be presented in the UI.
|
|
nsCOMPtr<nsIURIFixup> urifixup = services::GetURIFixup();
|
|
NS_ENSURE_TRUE_VOID(urifixup);
|
|
nsCOMPtr<nsIURI> exposableURI;
|
|
nsresult rv =
|
|
urifixup->CreateExposableURI(uri, getter_AddRefs(exposableURI));
|
|
NS_ENSURE_SUCCESS_VOID(rv);
|
|
|
|
AutoTArray<nsString, 1> params;
|
|
CopyUTF8toUTF16(exposableURI->GetSpecOrDefault(),
|
|
*params.AppendElement());
|
|
|
|
nsContentUtils::ReportToConsole(
|
|
nsIScriptError::warningFlag, category, doc,
|
|
nsContentUtils::eNECKO_PROPERTIES, message, params, nullptr,
|
|
sourceLine, lineNumber, columnNumber);
|
|
}),
|
|
kMaxConsoleOutputDelayMs, EventQueuePriority::Idle);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
void ReportUnblockingToConsole(
|
|
nsPIDOMWindowInner* aWindow, const nsAString& aTrackingOrigin,
|
|
const nsAString& aGrantedOrigin,
|
|
AntiTrackingCommon::StorageAccessGrantedReason aReason) {
|
|
nsCOMPtr<nsIPrincipal> principal =
|
|
nsGlobalWindowInner::Cast(aWindow)->GetPrincipal();
|
|
if (NS_WARN_IF(!principal)) {
|
|
return;
|
|
}
|
|
|
|
nsCOMPtr<nsIDocShell> docShell = aWindow->GetDocShell();
|
|
if (NS_WARN_IF(!docShell)) {
|
|
return;
|
|
}
|
|
|
|
RefPtr<Document> doc = docShell->GetDocument();
|
|
if (NS_WARN_IF(!doc)) {
|
|
return;
|
|
}
|
|
|
|
nsAutoString trackingOrigin(aTrackingOrigin);
|
|
nsAutoString grantedOrigin(aGrantedOrigin);
|
|
|
|
nsAutoString sourceLine;
|
|
uint32_t lineNumber = 0, columnNumber = 0;
|
|
JSContext* cx = nsContentUtils::GetCurrentJSContext();
|
|
if (cx) {
|
|
nsJSUtils::GetCallingLocation(cx, sourceLine, &lineNumber, &columnNumber);
|
|
}
|
|
|
|
nsresult rv = NS_DispatchToCurrentThreadQueue(
|
|
NS_NewRunnableFunction(
|
|
"ReportUnblockingToConsoleDelayed",
|
|
[doc, principal, trackingOrigin, grantedOrigin, sourceLine,
|
|
lineNumber, columnNumber, aReason]() {
|
|
nsAutoString origin;
|
|
nsresult rv = nsContentUtils::GetUTFOrigin(principal, origin);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return;
|
|
}
|
|
|
|
// Not adding grantedOrigin yet because we may not want it later.
|
|
AutoTArray<nsString, 3> params = {origin, trackingOrigin};
|
|
const char* messageWithDifferentOrigin = nullptr;
|
|
const char* messageWithSameOrigin = nullptr;
|
|
|
|
switch (aReason) {
|
|
case AntiTrackingCommon::eStorageAccessAPI:
|
|
messageWithDifferentOrigin =
|
|
"CookieAllowedForOriginOnTrackerByStorageAccessAPI";
|
|
messageWithSameOrigin =
|
|
"CookieAllowedForTrackerByStorageAccessAPI";
|
|
break;
|
|
|
|
case AntiTrackingCommon::eOpenerAfterUserInteraction:
|
|
MOZ_FALLTHROUGH;
|
|
case AntiTrackingCommon::eOpener:
|
|
messageWithDifferentOrigin =
|
|
"CookieAllowedForOriginOnTrackerByHeuristic";
|
|
messageWithSameOrigin = "CookieAllowedForTrackerByHeuristic";
|
|
break;
|
|
}
|
|
|
|
if (trackingOrigin == grantedOrigin) {
|
|
nsContentUtils::ReportToConsole(
|
|
nsIScriptError::warningFlag,
|
|
NS_LITERAL_CSTRING("Content Blocking"), doc,
|
|
nsContentUtils::eNECKO_PROPERTIES, messageWithSameOrigin,
|
|
params, nullptr, sourceLine, lineNumber, columnNumber);
|
|
} else {
|
|
params.AppendElement(grantedOrigin);
|
|
nsContentUtils::ReportToConsole(
|
|
nsIScriptError::warningFlag,
|
|
NS_LITERAL_CSTRING("Content Blocking"), doc,
|
|
nsContentUtils::eNECKO_PROPERTIES, messageWithDifferentOrigin,
|
|
params, nullptr, sourceLine, lineNumber, columnNumber);
|
|
}
|
|
}),
|
|
kMaxConsoleOutputDelayMs, EventQueuePriority::Idle);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
already_AddRefed<nsPIDOMWindowOuter> GetTopWindow(nsPIDOMWindowInner* aWindow) {
|
|
Document* document = aWindow->GetExtantDoc();
|
|
if (!document) {
|
|
return nullptr;
|
|
}
|
|
|
|
nsIChannel* channel = document->GetChannel();
|
|
if (!channel) {
|
|
return nullptr;
|
|
}
|
|
|
|
nsCOMPtr<nsPIDOMWindowOuter> pwin;
|
|
auto* outer = nsGlobalWindowOuter::Cast(aWindow->GetOuterWindow());
|
|
if (outer) {
|
|
pwin = outer->GetInProcessScriptableTop();
|
|
}
|
|
|
|
if (!pwin) {
|
|
return nullptr;
|
|
}
|
|
|
|
return pwin.forget();
|
|
}
|
|
|
|
class TemporaryAccessGrantObserver final : public nsIObserver {
|
|
public:
|
|
NS_DECL_ISUPPORTS
|
|
NS_DECL_NSIOBSERVER
|
|
|
|
static void Create(nsPermissionManager* aPM, nsIPrincipal* aPrincipal,
|
|
const nsACString& aType) {
|
|
nsCOMPtr<nsITimer> timer;
|
|
RefPtr<TemporaryAccessGrantObserver> observer =
|
|
new TemporaryAccessGrantObserver(aPM, aPrincipal, aType);
|
|
nsresult rv = NS_NewTimerWithObserver(getter_AddRefs(timer), observer,
|
|
24 * 60 * 60 * 1000, // 24 hours
|
|
nsITimer::TYPE_ONE_SHOT);
|
|
|
|
if (NS_SUCCEEDED(rv)) {
|
|
observer->SetTimer(timer);
|
|
} else {
|
|
timer->Cancel();
|
|
}
|
|
}
|
|
|
|
void SetTimer(nsITimer* aTimer) {
|
|
mTimer = aTimer;
|
|
nsCOMPtr<nsIObserverService> observerService =
|
|
mozilla::services::GetObserverService();
|
|
if (observerService) {
|
|
observerService->AddObserver(this, NS_XPCOM_SHUTDOWN_OBSERVER_ID, false);
|
|
}
|
|
}
|
|
|
|
private:
|
|
TemporaryAccessGrantObserver(nsPermissionManager* aPM,
|
|
nsIPrincipal* aPrincipal,
|
|
const nsACString& aType)
|
|
: mPM(aPM), mPrincipal(aPrincipal), mType(aType) {
|
|
MOZ_ASSERT(XRE_IsParentProcess(),
|
|
"Enforcing temporary access grant lifetimes can only be done in "
|
|
"the parent process");
|
|
}
|
|
|
|
~TemporaryAccessGrantObserver() = default;
|
|
|
|
private:
|
|
nsCOMPtr<nsITimer> mTimer;
|
|
RefPtr<nsPermissionManager> mPM;
|
|
nsCOMPtr<nsIPrincipal> mPrincipal;
|
|
nsCString mType;
|
|
};
|
|
|
|
NS_IMPL_ISUPPORTS(TemporaryAccessGrantObserver, nsIObserver)
|
|
|
|
NS_IMETHODIMP
|
|
TemporaryAccessGrantObserver::Observe(nsISupports* aSubject, const char* aTopic,
|
|
const char16_t* aData) {
|
|
if (strcmp(aTopic, NS_TIMER_CALLBACK_TOPIC) == 0) {
|
|
Unused << mPM->RemoveFromPrincipal(mPrincipal, mType);
|
|
} else if (strcmp(aTopic, NS_XPCOM_SHUTDOWN_OBSERVER_ID) == 0) {
|
|
nsCOMPtr<nsIObserverService> observerService =
|
|
mozilla::services::GetObserverService();
|
|
if (observerService) {
|
|
observerService->RemoveObserver(this, NS_XPCOM_SHUTDOWN_OBSERVER_ID);
|
|
}
|
|
if (mTimer) {
|
|
mTimer->Cancel();
|
|
mTimer = nullptr;
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
class SettingsChangeObserver final : public nsIObserver {
|
|
~SettingsChangeObserver() = default;
|
|
|
|
public:
|
|
NS_DECL_ISUPPORTS
|
|
NS_DECL_NSIOBSERVER
|
|
|
|
static void PrivacyPrefChanged(const char* aPref = nullptr, void* = nullptr);
|
|
|
|
private:
|
|
static void RunAntiTrackingSettingsChangedCallbacks();
|
|
};
|
|
|
|
NS_IMPL_ISUPPORTS(SettingsChangeObserver, nsIObserver)
|
|
|
|
NS_IMETHODIMP SettingsChangeObserver::Observe(nsISupports* aSubject,
|
|
const char* aTopic,
|
|
const char16_t* aData) {
|
|
if (!strcmp(aTopic, "xpcom-shutdown")) {
|
|
nsCOMPtr<nsIObserverService> obs = services::GetObserverService();
|
|
if (obs) {
|
|
obs->RemoveObserver(this, "perm-added");
|
|
obs->RemoveObserver(this, "perm-changed");
|
|
obs->RemoveObserver(this, "perm-cleared");
|
|
obs->RemoveObserver(this, "perm-deleted");
|
|
obs->RemoveObserver(this, "xpcom-shutdown");
|
|
|
|
Preferences::UnregisterPrefixCallback(
|
|
SettingsChangeObserver::PrivacyPrefChanged,
|
|
"browser.contentblocking.");
|
|
Preferences::UnregisterPrefixCallback(
|
|
SettingsChangeObserver::PrivacyPrefChanged, "network.cookie.");
|
|
Preferences::UnregisterPrefixCallback(
|
|
SettingsChangeObserver::PrivacyPrefChanged, "privacy.");
|
|
|
|
gSettingsChangedCallbacks = nullptr;
|
|
}
|
|
} else {
|
|
nsCOMPtr<nsIPermission> perm = do_QueryInterface(aSubject);
|
|
if (perm) {
|
|
nsAutoCString type;
|
|
nsresult rv = perm->GetType(type);
|
|
if (NS_WARN_IF(NS_FAILED(rv)) || type.Equals(USER_INTERACTION_PERM)) {
|
|
// Ignore failures or notifications that have been sent because of
|
|
// user interactions.
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
RunAntiTrackingSettingsChangedCallbacks();
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// static
|
|
void SettingsChangeObserver::PrivacyPrefChanged(const char* aPref,
|
|
void* aClosure) {
|
|
RunAntiTrackingSettingsChangedCallbacks();
|
|
}
|
|
|
|
// static
|
|
void SettingsChangeObserver::RunAntiTrackingSettingsChangedCallbacks() {
|
|
if (gSettingsChangedCallbacks) {
|
|
for (auto& callback : *gSettingsChangedCallbacks) {
|
|
callback();
|
|
}
|
|
}
|
|
}
|
|
|
|
} // namespace
|
|
|
|
/* static */ RefPtr<AntiTrackingCommon::StorageAccessGrantPromise>
|
|
AntiTrackingCommon::AddFirstPartyStorageAccessGrantedFor(
|
|
nsIPrincipal* aPrincipal, nsPIDOMWindowInner* aParentWindow,
|
|
StorageAccessGrantedReason aReason,
|
|
const AntiTrackingCommon::PerformFinalChecks& aPerformFinalChecks) {
|
|
MOZ_ASSERT(aParentWindow);
|
|
|
|
nsCOMPtr<nsIURI> uri;
|
|
aPrincipal->GetURI(getter_AddRefs(uri));
|
|
if (NS_WARN_IF(!uri)) {
|
|
LOG(("Can't get the URI from the principal"));
|
|
return StorageAccessGrantPromise::CreateAndReject(false, __func__);
|
|
}
|
|
|
|
nsAutoCString origin;
|
|
nsresult rv = nsContentUtils::GetASCIIOrigin(uri, origin);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
LOG(("Can't get the origin from the URI"));
|
|
return StorageAccessGrantPromise::CreateAndReject(false, __func__);
|
|
}
|
|
|
|
LOG(("Adding a first-party storage exception for %s...",
|
|
PromiseFlatCString(origin).get()));
|
|
|
|
Document* parentDoc = aParentWindow->GetExtantDoc();
|
|
if (!parentDoc) {
|
|
LOG(("Parent window has no doc"));
|
|
return StorageAccessGrantPromise::CreateAndReject(false, __func__);
|
|
}
|
|
int32_t behavior = parentDoc->CookieSettings()->GetCookieBehavior();
|
|
|
|
if (!parentDoc->CookieSettings()->GetRejectThirdPartyTrackers()) {
|
|
LOG(
|
|
("Disabled by network.cookie.cookieBehavior pref (%d), bailing out "
|
|
"early",
|
|
behavior));
|
|
return StorageAccessGrantPromise::CreateAndResolve(true, __func__);
|
|
}
|
|
|
|
MOZ_ASSERT(
|
|
behavior == nsICookieService::BEHAVIOR_REJECT_TRACKER ||
|
|
behavior ==
|
|
nsICookieService::BEHAVIOR_REJECT_TRACKER_AND_PARTITION_FOREIGN);
|
|
|
|
if (CheckContentBlockingAllowList(aParentWindow)) {
|
|
return StorageAccessGrantPromise::CreateAndResolve(true, __func__);
|
|
}
|
|
|
|
nsCOMPtr<nsIPrincipal> topLevelStoragePrincipal;
|
|
nsCOMPtr<nsIURI> trackingURI;
|
|
nsAutoCString trackingOrigin;
|
|
nsCOMPtr<nsIPrincipal> trackingPrincipal;
|
|
|
|
RefPtr<nsGlobalWindowInner> parentWindow =
|
|
nsGlobalWindowInner::Cast(aParentWindow);
|
|
nsGlobalWindowOuter* outerParentWindow =
|
|
nsGlobalWindowOuter::Cast(parentWindow->GetOuterWindow());
|
|
if (NS_WARN_IF(!outerParentWindow)) {
|
|
LOG(("No outer window found for our parent window, bailing out early"));
|
|
return StorageAccessGrantPromise::CreateAndReject(false, __func__);
|
|
}
|
|
|
|
LOG(("The current resource is %s-party",
|
|
outerParentWindow->IsTopLevelWindow() ? "first" : "third"));
|
|
|
|
// We are a first party resource.
|
|
if (outerParentWindow->IsTopLevelWindow()) {
|
|
trackingOrigin = origin;
|
|
trackingPrincipal = aPrincipal;
|
|
rv = trackingPrincipal->GetURI(getter_AddRefs(trackingURI));
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
LOG(("Couldn't get the tracking principal URI"));
|
|
return StorageAccessGrantPromise::CreateAndReject(false, __func__);
|
|
}
|
|
topLevelStoragePrincipal = parentWindow->GetPrincipal();
|
|
if (NS_WARN_IF(!topLevelStoragePrincipal)) {
|
|
LOG(("Top-level storage area principal not found, bailing out early"));
|
|
return StorageAccessGrantPromise::CreateAndReject(false, __func__);
|
|
}
|
|
|
|
} else {
|
|
// We should be a 3rd party source.
|
|
bool isThirdParty = false;
|
|
if (behavior == nsICookieService::BEHAVIOR_REJECT_TRACKER) {
|
|
isThirdParty =
|
|
nsContentUtils::IsThirdPartyTrackingResourceWindow(parentWindow);
|
|
} else if (behavior == nsICookieService::
|
|
BEHAVIOR_REJECT_TRACKER_AND_PARTITION_FOREIGN) {
|
|
isThirdParty = nsContentUtils::IsThirdPartyWindowOrChannel(
|
|
parentWindow, nullptr, nullptr);
|
|
}
|
|
|
|
if (!isThirdParty) {
|
|
if (behavior == nsICookieService::BEHAVIOR_REJECT_TRACKER) {
|
|
LOG(("Our window isn't a third-party tracking window"));
|
|
} else if (behavior ==
|
|
nsICookieService::
|
|
BEHAVIOR_REJECT_TRACKER_AND_PARTITION_FOREIGN) {
|
|
LOG(("Our window isn't a third-party window"));
|
|
}
|
|
return StorageAccessGrantPromise::CreateAndReject(false, __func__);
|
|
}
|
|
|
|
if (!GetParentPrincipalAndTrackingOrigin(
|
|
parentWindow, behavior, getter_AddRefs(topLevelStoragePrincipal),
|
|
trackingOrigin, getter_AddRefs(trackingURI),
|
|
getter_AddRefs(trackingPrincipal))) {
|
|
LOG(
|
|
("Error while computing the parent principal and tracking origin, "
|
|
"bailing out early"));
|
|
return StorageAccessGrantPromise::CreateAndReject(false, __func__);
|
|
}
|
|
}
|
|
|
|
nsCOMPtr<nsPIDOMWindowOuter> topOuterWindow =
|
|
outerParentWindow->GetInProcessTop();
|
|
nsGlobalWindowOuter* topWindow = nsGlobalWindowOuter::Cast(topOuterWindow);
|
|
if (NS_WARN_IF(!topWindow)) {
|
|
LOG(("No top outer window."));
|
|
return StorageAccessGrantPromise::CreateAndReject(false, __func__);
|
|
}
|
|
|
|
nsPIDOMWindowInner* topInnerWindow = topWindow->GetCurrentInnerWindow();
|
|
if (NS_WARN_IF(!topInnerWindow)) {
|
|
LOG(("No top inner window."));
|
|
return StorageAccessGrantPromise::CreateAndReject(false, __func__);
|
|
}
|
|
|
|
// We hardcode this block reason since the first-party storage access
|
|
// permission is granted for the purpose of blocking trackers.
|
|
// Note that if aReason is eOpenerAfterUserInteraction and the
|
|
// trackingPrincipal is not in a blacklist, we don't check the
|
|
// user-interaction state, because it could be that the current process has
|
|
// just sent the request to store the user-interaction permission into the
|
|
// parent, without having received the permission itself yet.
|
|
//
|
|
// We define this as an enum, since without that MSVC fails to capturing this
|
|
// name inside the lambda without the explicit capture and clang warns if
|
|
// there is an explicit capture with -Wunused-lambda-capture.
|
|
enum : uint32_t {
|
|
blockReason = nsIWebProgressListener::STATE_COOKIES_BLOCKED_TRACKER
|
|
};
|
|
if (nsContentUtils::IsURIInPrefList(trackingURI,
|
|
"privacy.restrict3rdpartystorage."
|
|
"userInteractionRequiredForHosts") &&
|
|
!HasUserInteraction(trackingPrincipal)) {
|
|
LOG_SPEC(("Tracking principal (%s) hasn't been interacted with before, "
|
|
"refusing to add a first-party storage permission to access it",
|
|
_spec),
|
|
trackingURI);
|
|
NotifyBlockingDecision(aParentWindow, BlockingDecision::eBlock,
|
|
blockReason);
|
|
return StorageAccessGrantPromise::CreateAndReject(false, __func__);
|
|
}
|
|
|
|
nsCOMPtr<nsPIDOMWindowOuter> pwin = GetTopWindow(parentWindow);
|
|
if (!pwin) {
|
|
LOG(("Couldn't get the top window"));
|
|
return StorageAccessGrantPromise::CreateAndReject(false, __func__);
|
|
}
|
|
|
|
auto storePermission =
|
|
[pwin, parentWindow, origin, trackingOrigin, trackingPrincipal,
|
|
trackingURI, topInnerWindow, topLevelStoragePrincipal,
|
|
aReason](int aAllowMode) -> RefPtr<StorageAccessGrantPromise> {
|
|
nsAutoCString permissionKey;
|
|
CreatePermissionKey(trackingOrigin, origin, permissionKey);
|
|
|
|
// Let's store the permission in the current parent window.
|
|
topInnerWindow->SaveStorageAccessGranted(permissionKey);
|
|
|
|
// Let's inform the parent window.
|
|
parentWindow->StorageAccessGranted();
|
|
|
|
nsIChannel* channel =
|
|
pwin->GetCurrentInnerWindow()->GetExtantDoc()->GetChannel();
|
|
|
|
pwin->NotifyContentBlockingEvent(blockReason, channel, false, trackingURI,
|
|
parentWindow->GetExtantDoc()->GetChannel(),
|
|
Some(aReason));
|
|
|
|
ReportUnblockingToConsole(parentWindow,
|
|
NS_ConvertUTF8toUTF16(trackingOrigin),
|
|
NS_ConvertUTF8toUTF16(origin), aReason);
|
|
|
|
if (XRE_IsParentProcess()) {
|
|
LOG(("Saving the permission: trackingOrigin=%s, grantedOrigin=%s",
|
|
trackingOrigin.get(), origin.get()));
|
|
|
|
return SaveFirstPartyStorageAccessGrantedForOriginOnParentProcess(
|
|
topLevelStoragePrincipal, trackingPrincipal, trackingOrigin,
|
|
origin, aAllowMode)
|
|
->Then(GetCurrentThreadSerialEventTarget(), __func__,
|
|
[](FirstPartyStorageAccessGrantPromise::ResolveOrRejectValue&&
|
|
aValue) {
|
|
if (aValue.IsResolve()) {
|
|
return StorageAccessGrantPromise::CreateAndResolve(
|
|
NS_SUCCEEDED(aValue.ResolveValue()) ? eAllowOnAnySite
|
|
: eAllow,
|
|
__func__);
|
|
}
|
|
return StorageAccessGrantPromise::CreateAndReject(false,
|
|
__func__);
|
|
});
|
|
}
|
|
|
|
ContentChild* cc = ContentChild::GetSingleton();
|
|
MOZ_ASSERT(cc);
|
|
|
|
LOG(
|
|
("Asking the parent process to save the permission for us: "
|
|
"trackingOrigin=%s, grantedOrigin=%s",
|
|
trackingOrigin.get(), origin.get()));
|
|
|
|
// This is not really secure, because here we have the content process
|
|
// sending the request of storing a permission.
|
|
return cc
|
|
->SendFirstPartyStorageAccessGrantedForOrigin(
|
|
IPC::Principal(topLevelStoragePrincipal),
|
|
IPC::Principal(trackingPrincipal), trackingOrigin, origin,
|
|
aAllowMode)
|
|
->Then(GetCurrentThreadSerialEventTarget(), __func__,
|
|
[](const ContentChild::
|
|
FirstPartyStorageAccessGrantedForOriginPromise::
|
|
ResolveOrRejectValue& aValue) {
|
|
if (aValue.IsResolve()) {
|
|
return StorageAccessGrantPromise::CreateAndResolve(
|
|
aValue.ResolveValue(), __func__);
|
|
}
|
|
return StorageAccessGrantPromise::CreateAndReject(false,
|
|
__func__);
|
|
});
|
|
};
|
|
|
|
if (aPerformFinalChecks) {
|
|
return aPerformFinalChecks()->Then(
|
|
GetCurrentThreadSerialEventTarget(), __func__,
|
|
[storePermission](
|
|
StorageAccessGrantPromise::ResolveOrRejectValue&& aValue) {
|
|
if (aValue.IsResolve()) {
|
|
return storePermission(aValue.ResolveValue());
|
|
}
|
|
return StorageAccessGrantPromise::CreateAndReject(false, __func__);
|
|
});
|
|
}
|
|
return storePermission(false);
|
|
}
|
|
|
|
/* static */
|
|
RefPtr<mozilla::AntiTrackingCommon::FirstPartyStorageAccessGrantPromise>
|
|
AntiTrackingCommon::SaveFirstPartyStorageAccessGrantedForOriginOnParentProcess(
|
|
nsIPrincipal* aParentPrincipal, nsIPrincipal* aTrackingPrincipal,
|
|
const nsCString& aTrackingOrigin, const nsCString& aGrantedOrigin,
|
|
int aAllowMode) {
|
|
MOZ_ASSERT(XRE_IsParentProcess());
|
|
MOZ_ASSERT(aAllowMode == eAllow || aAllowMode == eAllowAutoGrant ||
|
|
aAllowMode == eAllowOnAnySite);
|
|
|
|
nsCOMPtr<nsIURI> parentPrincipalURI;
|
|
Unused << aParentPrincipal->GetURI(getter_AddRefs(parentPrincipalURI));
|
|
LOG_SPEC(("Saving a first-party storage permission on %s for "
|
|
"trackingOrigin=%s grantedOrigin=%s",
|
|
_spec, aTrackingOrigin.get(), aGrantedOrigin.get()),
|
|
parentPrincipalURI);
|
|
|
|
if (NS_WARN_IF(!aParentPrincipal)) {
|
|
// The child process is sending something wrong. Let's ignore it.
|
|
LOG(("aParentPrincipal is null, bailing out early"));
|
|
return FirstPartyStorageAccessGrantPromise::CreateAndReject(false,
|
|
__func__);
|
|
}
|
|
|
|
nsPermissionManager* permManager = nsPermissionManager::GetInstance();
|
|
if (NS_WARN_IF(!permManager)) {
|
|
LOG(("Permission manager is null, bailing out early"));
|
|
return FirstPartyStorageAccessGrantPromise::CreateAndReject(false,
|
|
__func__);
|
|
}
|
|
|
|
// Remember that this pref is stored in seconds!
|
|
uint32_t expirationType = nsIPermissionManager::EXPIRE_TIME;
|
|
uint32_t expirationTime =
|
|
StaticPrefs::privacy_restrict3rdpartystorage_expiration() * 1000;
|
|
int64_t when = (PR_Now() / PR_USEC_PER_MSEC) + expirationTime;
|
|
|
|
nsresult rv;
|
|
if (aAllowMode == eAllowOnAnySite) {
|
|
uint32_t privateBrowsingId = 0;
|
|
rv = aTrackingPrincipal->GetPrivateBrowsingId(&privateBrowsingId);
|
|
if (!NS_WARN_IF(NS_FAILED(rv)) && privateBrowsingId > 0) {
|
|
// If we are coming from a private window, make sure to store a
|
|
// session-only permission which won't get persisted to disk.
|
|
expirationType = nsIPermissionManager::EXPIRE_SESSION;
|
|
when = 0;
|
|
}
|
|
|
|
LOG(
|
|
("Setting 'any site' permission expiry: %u, proceeding to save in the "
|
|
"permission manager",
|
|
expirationTime));
|
|
|
|
rv = permManager->AddFromPrincipal(
|
|
aTrackingPrincipal, NS_LITERAL_CSTRING("cookie"),
|
|
nsICookiePermission::ACCESS_ALLOW, expirationType, when);
|
|
Unused << NS_WARN_IF(NS_FAILED(rv));
|
|
}
|
|
|
|
// We must grant the storage permission also if we allow it for any site
|
|
// because the setting 'cookie' permission is not applied to existing
|
|
// documents (See CookieSettings documentation).
|
|
|
|
uint32_t privateBrowsingId = 0;
|
|
rv = aParentPrincipal->GetPrivateBrowsingId(&privateBrowsingId);
|
|
if ((!NS_WARN_IF(NS_FAILED(rv)) && privateBrowsingId > 0) ||
|
|
(aAllowMode == eAllowAutoGrant)) {
|
|
// If we are coming from a private window or are automatically granting a
|
|
// permission, make sure to store a session-only permission which won't
|
|
// get persisted to disk.
|
|
expirationType = nsIPermissionManager::EXPIRE_SESSION;
|
|
when = 0;
|
|
}
|
|
|
|
nsAutoCString type;
|
|
CreatePermissionKey(aTrackingOrigin, aGrantedOrigin, type);
|
|
|
|
LOG(
|
|
("Computed permission key: %s, expiry: %u, proceeding to save in the "
|
|
"permission manager",
|
|
type.get(), expirationTime));
|
|
|
|
rv = permManager->AddFromPrincipal(aParentPrincipal, type,
|
|
nsIPermissionManager::ALLOW_ACTION,
|
|
expirationType, when);
|
|
Unused << NS_WARN_IF(NS_FAILED(rv));
|
|
|
|
if (NS_SUCCEEDED(rv) && (aAllowMode == eAllowAutoGrant)) {
|
|
// Make sure temporary access grants do not survive more than 24 hours.
|
|
TemporaryAccessGrantObserver::Create(permManager, aParentPrincipal, type);
|
|
}
|
|
|
|
LOG(("Result: %s", NS_SUCCEEDED(rv) ? "success" : "failure"));
|
|
return FirstPartyStorageAccessGrantPromise::CreateAndResolve(rv, __func__);
|
|
}
|
|
|
|
// static
|
|
bool AntiTrackingCommon::IsStorageAccessPermission(nsIPermission* aPermission,
|
|
nsIPrincipal* aPrincipal) {
|
|
MOZ_ASSERT(aPermission);
|
|
MOZ_ASSERT(aPrincipal);
|
|
|
|
nsAutoCString origin;
|
|
nsresult rv = aPrincipal->GetOriginNoSuffix(origin);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return false;
|
|
}
|
|
|
|
// The permission key may belong either to a tracking origin on the same
|
|
// origin as the granted origin, or on another origin as the granted origin
|
|
// (for example when a tracker in a third-party context uses window.open to
|
|
// open another origin where that second origin would be the granted origin.)
|
|
// But even in the second case, the type of the permission would still be
|
|
// formed by concatenating the granted origin to the end of the type name
|
|
// (see CreatePermissionKey). Therefore, we pass in the same argument to
|
|
// both tracking origin and granted origin here in order to compute the
|
|
// shorter permission key and will then do a prefix match on the type of the
|
|
// input permission to see if it is a storage access permission or not.
|
|
nsAutoCString permissionKey;
|
|
CreatePermissionKey(origin, permissionKey);
|
|
|
|
nsAutoCString type;
|
|
rv = aPermission->GetType(type);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return false;
|
|
}
|
|
|
|
return StringBeginsWith(type, permissionKey);
|
|
}
|
|
|
|
bool AntiTrackingCommon::IsFirstPartyStorageAccessGrantedFor(
|
|
nsPIDOMWindowInner* aWindow, nsIURI* aURI, uint32_t* aRejectedReason) {
|
|
MOZ_ASSERT(aWindow);
|
|
MOZ_ASSERT(aURI);
|
|
|
|
// Let's avoid a null check on aRejectedReason everywhere else.
|
|
uint32_t rejectedReason = 0;
|
|
if (!aRejectedReason) {
|
|
aRejectedReason = &rejectedReason;
|
|
}
|
|
|
|
LOG_SPEC(("Computing whether window %p has access to URI %s", aWindow, _spec),
|
|
aURI);
|
|
|
|
nsGlobalWindowInner* innerWindow = nsGlobalWindowInner::Cast(aWindow);
|
|
Document* document = innerWindow->GetExtantDoc();
|
|
if (!document) {
|
|
LOG(("Our window has no document"));
|
|
return false;
|
|
}
|
|
|
|
nsGlobalWindowOuter* outerWindow =
|
|
nsGlobalWindowOuter::Cast(aWindow->GetOuterWindow());
|
|
if (!outerWindow) {
|
|
LOG(("Our window has no outer window"));
|
|
return false;
|
|
}
|
|
|
|
nsCOMPtr<nsPIDOMWindowOuter> topOuterWindow = outerWindow->GetInProcessTop();
|
|
nsGlobalWindowOuter* topWindow = nsGlobalWindowOuter::Cast(topOuterWindow);
|
|
if (NS_WARN_IF(!topWindow)) {
|
|
LOG(("No top outer window"));
|
|
return false;
|
|
}
|
|
|
|
nsPIDOMWindowInner* topInnerWindow = topWindow->GetCurrentInnerWindow();
|
|
if (NS_WARN_IF(!topInnerWindow)) {
|
|
LOG(("No top inner window."));
|
|
return false;
|
|
}
|
|
|
|
Document* toplevelDocument = topInnerWindow->GetExtantDoc();
|
|
if (!toplevelDocument) {
|
|
LOG(("No top level document."));
|
|
return false;
|
|
}
|
|
|
|
MOZ_ASSERT(toplevelDocument);
|
|
|
|
uint32_t cookiePermission = CheckCookiePermissionForPrincipal(
|
|
document->CookieSettings(), document->NodePrincipal());
|
|
if (cookiePermission != nsICookiePermission::ACCESS_DEFAULT) {
|
|
LOG(
|
|
("CheckCookiePermissionForPrincipal() returned a non-default access "
|
|
"code (%d) for window's principal, returning %s",
|
|
int(cookiePermission),
|
|
cookiePermission != nsICookiePermission::ACCESS_DENY ? "success"
|
|
: "failure"));
|
|
if (cookiePermission != nsICookiePermission::ACCESS_DENY) {
|
|
return true;
|
|
}
|
|
|
|
*aRejectedReason =
|
|
nsIWebProgressListener::STATE_COOKIES_BLOCKED_BY_PERMISSION;
|
|
return false;
|
|
}
|
|
|
|
int32_t behavior = CookiesBehavior(toplevelDocument, document);
|
|
if (behavior == nsICookieService::BEHAVIOR_ACCEPT) {
|
|
LOG(("The cookie behavior pref mandates accepting all cookies!"));
|
|
return true;
|
|
}
|
|
|
|
if (CheckContentBlockingAllowList(aWindow)) {
|
|
return true;
|
|
}
|
|
|
|
if (behavior == nsICookieService::BEHAVIOR_REJECT) {
|
|
LOG(("The cookie behavior pref mandates rejecting all cookies!"));
|
|
*aRejectedReason = nsIWebProgressListener::STATE_COOKIES_BLOCKED_ALL;
|
|
return false;
|
|
}
|
|
|
|
// As a performance optimization, we only perform this check for
|
|
// BEHAVIOR_REJECT_FOREIGN and BEHAVIOR_LIMIT_FOREIGN. For
|
|
// BEHAVIOR_REJECT_TRACKER and BEHAVIOR_REJECT_TRACKER_AND_PARTITION_FOREIGN,
|
|
// third-partiness is implicily checked later below.
|
|
if (behavior != nsICookieService::BEHAVIOR_REJECT_TRACKER &&
|
|
behavior !=
|
|
nsICookieService::BEHAVIOR_REJECT_TRACKER_AND_PARTITION_FOREIGN) {
|
|
// Let's check if this is a 3rd party context.
|
|
if (!nsContentUtils::IsThirdPartyWindowOrChannel(aWindow, nullptr, aURI)) {
|
|
LOG(("Our window isn't a third-party window"));
|
|
return true;
|
|
}
|
|
}
|
|
|
|
if (behavior == nsICookieService::BEHAVIOR_REJECT_FOREIGN ||
|
|
behavior == nsICookieService::BEHAVIOR_LIMIT_FOREIGN) {
|
|
// XXX For non-cookie forms of storage, we handle BEHAVIOR_LIMIT_FOREIGN by
|
|
// simply rejecting the request to use the storage. In the future, if we
|
|
// change the meaning of BEHAVIOR_LIMIT_FOREIGN to be one which makes sense
|
|
// for non-cookie storage types, this may change.
|
|
LOG(("Nothing more to do due to the behavior code %d", int(behavior)));
|
|
*aRejectedReason = nsIWebProgressListener::STATE_COOKIES_BLOCKED_FOREIGN;
|
|
return false;
|
|
}
|
|
|
|
MOZ_ASSERT(
|
|
behavior == nsICookieService::BEHAVIOR_REJECT_TRACKER ||
|
|
behavior ==
|
|
nsICookieService::BEHAVIOR_REJECT_TRACKER_AND_PARTITION_FOREIGN);
|
|
|
|
uint32_t blockedReason =
|
|
nsIWebProgressListener::STATE_COOKIES_BLOCKED_TRACKER;
|
|
|
|
if (behavior == nsICookieService::BEHAVIOR_REJECT_TRACKER) {
|
|
if (!nsContentUtils::IsThirdPartyTrackingResourceWindow(aWindow)) {
|
|
LOG(("Our window isn't a third-party tracking window"));
|
|
return true;
|
|
}
|
|
} else {
|
|
MOZ_ASSERT(behavior ==
|
|
nsICookieService::BEHAVIOR_REJECT_TRACKER_AND_PARTITION_FOREIGN);
|
|
if (nsContentUtils::IsThirdPartyTrackingResourceWindow(aWindow)) {
|
|
// fall through
|
|
} else if (nsContentUtils::IsThirdPartyWindowOrChannel(aWindow, nullptr,
|
|
aURI)) {
|
|
LOG(("We're in the third-party context, storage should be partitioned"));
|
|
// fall through, but remember that we're partitioning.
|
|
blockedReason = nsIWebProgressListener::STATE_COOKIES_PARTITIONED_FOREIGN;
|
|
} else {
|
|
LOG(("Our window isn't a third-party window, storage is allowed"));
|
|
return true;
|
|
}
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
nsCOMPtr<mozIThirdPartyUtil> thirdPartyUtil = services::GetThirdPartyUtil();
|
|
if (thirdPartyUtil) {
|
|
bool thirdParty = false;
|
|
nsresult rv = thirdPartyUtil->IsThirdPartyWindow(aWindow->GetOuterWindow(),
|
|
aURI, &thirdParty);
|
|
// The result of this assertion depends on whether IsThirdPartyWindow
|
|
// succeeds, because otherwise IsThirdPartyWindowOrChannel artificially
|
|
// fails.
|
|
MOZ_ASSERT_IF(NS_SUCCEEDED(rv), nsContentUtils::IsThirdPartyWindowOrChannel(
|
|
aWindow, nullptr, aURI) == thirdParty);
|
|
}
|
|
#endif
|
|
|
|
nsCOMPtr<nsIPrincipal> parentPrincipal;
|
|
nsCOMPtr<nsIURI> parentPrincipalURI;
|
|
nsCOMPtr<nsIURI> trackingURI;
|
|
nsAutoCString trackingOrigin;
|
|
if (!GetParentPrincipalAndTrackingOrigin(
|
|
nsGlobalWindowInner::Cast(aWindow), behavior,
|
|
getter_AddRefs(parentPrincipal), trackingOrigin,
|
|
getter_AddRefs(trackingURI), nullptr)) {
|
|
LOG(("Failed to obtain the parent principal and the tracking origin"));
|
|
*aRejectedReason = blockedReason;
|
|
return false;
|
|
}
|
|
Unused << parentPrincipal->GetURI(getter_AddRefs(parentPrincipalURI));
|
|
|
|
nsAutoCString grantedOrigin;
|
|
nsresult rv = nsContentUtils::GetASCIIOrigin(aURI, grantedOrigin);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
LOG_SPEC(("Failed to compute the origin from %s", _spec), aURI);
|
|
return false;
|
|
}
|
|
|
|
nsAutoCString type;
|
|
CreatePermissionKey(trackingOrigin, grantedOrigin, type);
|
|
|
|
if (topInnerWindow->HasStorageAccessGranted(type)) {
|
|
LOG(("Permission stored in the window. All good."));
|
|
return true;
|
|
}
|
|
|
|
nsPermissionManager* permManager = nsPermissionManager::GetInstance();
|
|
if (NS_WARN_IF(!permManager)) {
|
|
LOG(("Failed to obtain the permission manager"));
|
|
return false;
|
|
}
|
|
|
|
uint32_t result = 0;
|
|
rv = permManager->TestPermissionFromPrincipal(parentPrincipal, type, &result);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
LOG(("Failed to test the permission"));
|
|
return false;
|
|
}
|
|
|
|
LOG_SPEC(
|
|
("Testing permission type %s for %s resulted in %d (%s)", type.get(),
|
|
_spec, int(result),
|
|
result == nsIPermissionManager::ALLOW_ACTION ? "success" : "failure"),
|
|
parentPrincipalURI);
|
|
|
|
if (result != nsIPermissionManager::ALLOW_ACTION) {
|
|
*aRejectedReason = blockedReason;
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool AntiTrackingCommon::IsFirstPartyStorageAccessGrantedFor(
|
|
nsIChannel* aChannel, nsIURI* aURI, uint32_t* aRejectedReason) {
|
|
MOZ_ASSERT(aURI);
|
|
MOZ_ASSERT(aChannel);
|
|
|
|
// Let's avoid a null check on aRejectedReason everywhere else.
|
|
uint32_t rejectedReason = 0;
|
|
if (!aRejectedReason) {
|
|
aRejectedReason = &rejectedReason;
|
|
}
|
|
|
|
nsIScriptSecurityManager* ssm =
|
|
nsScriptSecurityManager::GetScriptSecurityManager();
|
|
MOZ_ASSERT(ssm);
|
|
|
|
nsCOMPtr<nsIURI> channelURI;
|
|
nsresult rv = NS_GetFinalChannelURI(aChannel, getter_AddRefs(channelURI));
|
|
if (NS_FAILED(rv)) {
|
|
LOG(("Failed to get the channel final URI, bail out early"));
|
|
return true;
|
|
}
|
|
LOG_SPEC(
|
|
("Computing whether channel %p has access to URI %s", aChannel, _spec),
|
|
channelURI);
|
|
|
|
nsCOMPtr<nsILoadInfo> loadInfo = aChannel->LoadInfo();
|
|
// We need to find the correct principal to check the cookie permission. For
|
|
// third-party contexts, we want to check if the top-level window has a custom
|
|
// cookie permission.
|
|
nsCOMPtr<nsIPrincipal> toplevelPrincipal = loadInfo->GetTopLevelPrincipal();
|
|
|
|
// If this is already the top-level window, we should use the loading
|
|
// principal.
|
|
if (!toplevelPrincipal) {
|
|
LOG(
|
|
("Our loadInfo lacks a top-level principal, use the loadInfo's loading "
|
|
"principal instead"));
|
|
toplevelPrincipal = loadInfo->LoadingPrincipal();
|
|
}
|
|
|
|
nsCOMPtr<nsIHttpChannel> httpChannel = do_QueryInterface(aChannel);
|
|
|
|
// If we don't have a loading principal and this is a document channel, we are
|
|
// a top-level window!
|
|
if (!toplevelPrincipal) {
|
|
LOG(
|
|
("We don't have a loading principal, let's see if this is a document "
|
|
"channel"
|
|
" that belongs to a top-level window"));
|
|
bool isDocument = false;
|
|
if (httpChannel) {
|
|
rv = httpChannel->GetIsMainDocumentChannel(&isDocument);
|
|
}
|
|
if (httpChannel && NS_SUCCEEDED(rv) && isDocument) {
|
|
rv = ssm->GetChannelResultPrincipal(aChannel,
|
|
getter_AddRefs(toplevelPrincipal));
|
|
if (NS_SUCCEEDED(rv)) {
|
|
LOG(("Yes, we guessed right!"));
|
|
} else {
|
|
LOG(
|
|
("Yes, we guessed right, but minting the channel result principal "
|
|
"failed"));
|
|
}
|
|
} else {
|
|
LOG(("No, we guessed wrong!"));
|
|
}
|
|
}
|
|
|
|
// Let's use the triggering principal then.
|
|
if (!toplevelPrincipal) {
|
|
LOG(
|
|
("Our loadInfo lacks a top-level principal, use the loadInfo's "
|
|
"triggering principal instead"));
|
|
toplevelPrincipal = loadInfo->TriggeringPrincipal();
|
|
}
|
|
|
|
if (NS_WARN_IF(!toplevelPrincipal)) {
|
|
LOG(("No top-level principal! Bail out early"));
|
|
return false;
|
|
}
|
|
|
|
nsCOMPtr<nsICookieSettings> cookieSettings;
|
|
rv = loadInfo->GetCookieSettings(getter_AddRefs(cookieSettings));
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
LOG(
|
|
("Failed to get the cookie settings from the loadinfo, bail out "
|
|
"early"));
|
|
return true;
|
|
}
|
|
|
|
nsCOMPtr<nsIPrincipal> channelPrincipal;
|
|
rv = ssm->GetChannelResultPrincipal(aChannel,
|
|
getter_AddRefs(channelPrincipal));
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
LOG(("No channel principal, bail out early"));
|
|
return false;
|
|
}
|
|
|
|
uint32_t cookiePermission =
|
|
CheckCookiePermissionForPrincipal(cookieSettings, channelPrincipal);
|
|
if (cookiePermission != nsICookiePermission::ACCESS_DEFAULT) {
|
|
LOG(
|
|
("CheckCookiePermissionForPrincipal() returned a non-default access "
|
|
"code (%d) for channel's principal, returning %s",
|
|
int(cookiePermission),
|
|
cookiePermission != nsICookiePermission::ACCESS_DENY ? "success"
|
|
: "failure"));
|
|
if (cookiePermission != nsICookiePermission::ACCESS_DENY) {
|
|
return true;
|
|
}
|
|
|
|
*aRejectedReason =
|
|
nsIWebProgressListener::STATE_COOKIES_BLOCKED_BY_PERMISSION;
|
|
return false;
|
|
}
|
|
|
|
if (!channelURI) {
|
|
LOG(("No channel uri, bail out early"));
|
|
return false;
|
|
}
|
|
|
|
int32_t behavior = CookiesBehavior(loadInfo, toplevelPrincipal, channelURI);
|
|
if (behavior == nsICookieService::BEHAVIOR_ACCEPT) {
|
|
LOG(("The cookie behavior pref mandates accepting all cookies!"));
|
|
return true;
|
|
}
|
|
|
|
if (httpChannel && CheckContentBlockingAllowList(httpChannel)) {
|
|
return true;
|
|
}
|
|
|
|
if (behavior == nsICookieService::BEHAVIOR_REJECT) {
|
|
LOG(("The cookie behavior pref mandates rejecting all cookies!"));
|
|
*aRejectedReason = nsIWebProgressListener::STATE_COOKIES_BLOCKED_ALL;
|
|
return false;
|
|
}
|
|
|
|
nsCOMPtr<mozIThirdPartyUtil> thirdPartyUtil = services::GetThirdPartyUtil();
|
|
if (!thirdPartyUtil) {
|
|
LOG(("No thirdPartyUtil, bail out early"));
|
|
return true;
|
|
}
|
|
|
|
bool thirdParty = false;
|
|
rv = thirdPartyUtil->IsThirdPartyChannel(aChannel, aURI, &thirdParty);
|
|
// Grant if it's not a 3rd party.
|
|
// Be careful to check the return value of IsThirdPartyChannel, since
|
|
// IsThirdPartyChannel() will fail if the channel's loading principal is the
|
|
// system principal...
|
|
if (NS_SUCCEEDED(rv) && !thirdParty) {
|
|
LOG(("Our channel isn't a third-party channel"));
|
|
return true;
|
|
}
|
|
|
|
if (behavior == nsICookieService::BEHAVIOR_REJECT_FOREIGN ||
|
|
behavior == nsICookieService::BEHAVIOR_LIMIT_FOREIGN) {
|
|
// XXX For non-cookie forms of storage, we handle BEHAVIOR_LIMIT_FOREIGN by
|
|
// simply rejecting the request to use the storage. In the future, if we
|
|
// change the meaning of BEHAVIOR_LIMIT_FOREIGN to be one which makes sense
|
|
// for non-cookie storage types, this may change.
|
|
LOG(("Nothing more to do due to the behavior code %d", int(behavior)));
|
|
*aRejectedReason = nsIWebProgressListener::STATE_COOKIES_BLOCKED_FOREIGN;
|
|
return false;
|
|
}
|
|
|
|
MOZ_ASSERT(
|
|
behavior == nsICookieService::BEHAVIOR_REJECT_TRACKER ||
|
|
behavior ==
|
|
nsICookieService::BEHAVIOR_REJECT_TRACKER_AND_PARTITION_FOREIGN);
|
|
|
|
uint32_t blockedReason =
|
|
nsIWebProgressListener::STATE_COOKIES_BLOCKED_TRACKER;
|
|
|
|
// Not a tracker.
|
|
if (behavior == nsICookieService::BEHAVIOR_REJECT_TRACKER) {
|
|
if (httpChannel && !httpChannel->IsThirdPartyTrackingResource()) {
|
|
LOG(("Our channel isn't a third-party tracking channel"));
|
|
return true;
|
|
}
|
|
} else {
|
|
MOZ_ASSERT(behavior ==
|
|
nsICookieService::BEHAVIOR_REJECT_TRACKER_AND_PARTITION_FOREIGN);
|
|
if (httpChannel && httpChannel->IsThirdPartyTrackingResource()) {
|
|
// fall through
|
|
} else if (nsContentUtils::IsThirdPartyWindowOrChannel(nullptr, aChannel,
|
|
aURI)) {
|
|
LOG(("We're in the third-party context, storage should be partitioned"));
|
|
// fall through but remember that we're partitioning.
|
|
blockedReason = nsIWebProgressListener::STATE_COOKIES_PARTITIONED_FOREIGN;
|
|
} else {
|
|
LOG(("Our channel isn't a third-party channel, storage is allowed"));
|
|
return true;
|
|
}
|
|
}
|
|
|
|
// Only use the "top-level storage area principal" behaviour for reject
|
|
// tracker mode only.
|
|
nsIPrincipal* parentPrincipal =
|
|
(behavior == nsICookieService::BEHAVIOR_REJECT_TRACKER)
|
|
? loadInfo->GetTopLevelStorageAreaPrincipal()
|
|
: loadInfo->GetTopLevelPrincipal();
|
|
if (!parentPrincipal) {
|
|
LOG(("No top-level storage area principal at hand"));
|
|
|
|
// parentPrincipal can be null if the parent window is not the top-level
|
|
// window.
|
|
if (loadInfo->GetTopLevelPrincipal()) {
|
|
LOG(("Parent window is the top-level window, bail out early"));
|
|
*aRejectedReason = blockedReason;
|
|
return false;
|
|
}
|
|
|
|
parentPrincipal = toplevelPrincipal;
|
|
if (NS_WARN_IF(!parentPrincipal)) {
|
|
LOG(
|
|
("No triggering principal, this shouldn't be happening! Bail out "
|
|
"early"));
|
|
// Why we are here?!?
|
|
return true;
|
|
}
|
|
}
|
|
|
|
nsCOMPtr<nsIURI> parentPrincipalURI;
|
|
Unused << parentPrincipal->GetURI(getter_AddRefs(parentPrincipalURI));
|
|
|
|
// Let's see if we have to grant the access for this particular channel.
|
|
|
|
nsCOMPtr<nsIURI> trackingURI;
|
|
rv = aChannel->GetURI(getter_AddRefs(trackingURI));
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
LOG(("Failed to get the channel URI"));
|
|
return true;
|
|
}
|
|
|
|
nsAutoCString trackingOrigin;
|
|
rv = nsContentUtils::GetASCIIOrigin(trackingURI, trackingOrigin);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
LOG_SPEC(("Failed to compute the origin from %s", _spec), trackingURI);
|
|
return false;
|
|
}
|
|
|
|
nsAutoCString origin;
|
|
rv = nsContentUtils::GetASCIIOrigin(aURI, origin);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
LOG_SPEC(("Failed to compute the origin from %s", _spec), aURI);
|
|
return false;
|
|
}
|
|
|
|
nsAutoCString type;
|
|
CreatePermissionKey(trackingOrigin, origin, type);
|
|
|
|
nsPermissionManager* permManager = nsPermissionManager::GetInstance();
|
|
if (NS_WARN_IF(!permManager)) {
|
|
LOG(("Failed to obtain the permission manager"));
|
|
return false;
|
|
}
|
|
|
|
uint32_t result = 0;
|
|
rv = permManager->TestPermissionWithoutDefaultsFromPrincipal(parentPrincipal,
|
|
type, &result);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
LOG(("Failed to test the permission"));
|
|
return false;
|
|
}
|
|
|
|
LOG_SPEC(
|
|
("Testing permission type %s for %s resulted in %d (%s)", type.get(),
|
|
_spec, int(result),
|
|
result == nsIPermissionManager::ALLOW_ACTION ? "success" : "failure"),
|
|
parentPrincipalURI);
|
|
|
|
if (result != nsIPermissionManager::ALLOW_ACTION) {
|
|
*aRejectedReason = blockedReason;
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool AntiTrackingCommon::IsFirstPartyStorageAccessGrantedFor(
|
|
nsIPrincipal* aPrincipal, nsICookieSettings* aCookieSettings) {
|
|
MOZ_ASSERT(aPrincipal);
|
|
MOZ_ASSERT(aCookieSettings);
|
|
|
|
uint32_t access = nsICookiePermission::ACCESS_DEFAULT;
|
|
if (aPrincipal->GetIsContentPrincipal()) {
|
|
nsPermissionManager* permManager = nsPermissionManager::GetInstance();
|
|
if (permManager) {
|
|
Unused << NS_WARN_IF(NS_FAILED(permManager->TestPermissionFromPrincipal(
|
|
aPrincipal, NS_LITERAL_CSTRING("cookie"), &access)));
|
|
}
|
|
}
|
|
|
|
if (access != nsICookiePermission::ACCESS_DEFAULT) {
|
|
return access != nsICookiePermission::ACCESS_DENY;
|
|
}
|
|
|
|
int32_t behavior = CookiesBehavior(aPrincipal, aCookieSettings);
|
|
return behavior != nsICookieService::BEHAVIOR_REJECT;
|
|
}
|
|
|
|
/* static */
|
|
bool AntiTrackingCommon::MaybeIsFirstPartyStorageAccessGrantedFor(
|
|
nsPIDOMWindowInner* aFirstPartyWindow, nsIURI* aURI) {
|
|
MOZ_ASSERT(aFirstPartyWindow);
|
|
MOZ_ASSERT(aURI);
|
|
|
|
LOG_SPEC(
|
|
("Computing a best guess as to whether window %p has access to URI %s",
|
|
aFirstPartyWindow, _spec),
|
|
aURI);
|
|
|
|
Document* parentDocument =
|
|
nsGlobalWindowInner::Cast(aFirstPartyWindow)->GetExtantDoc();
|
|
if (NS_WARN_IF(!parentDocument)) {
|
|
LOG(("Failed to get the first party window's document"));
|
|
return false;
|
|
}
|
|
|
|
if (!parentDocument->CookieSettings()->GetRejectThirdPartyTrackers()) {
|
|
LOG(("Disabled by the pref (%d), bail out early",
|
|
parentDocument->CookieSettings()->GetCookieBehavior()));
|
|
return true;
|
|
}
|
|
|
|
if (CheckContentBlockingAllowList(aFirstPartyWindow)) {
|
|
return true;
|
|
}
|
|
|
|
if (!nsContentUtils::IsThirdPartyWindowOrChannel(aFirstPartyWindow, nullptr,
|
|
aURI)) {
|
|
LOG(("Our window isn't a third-party window"));
|
|
return true;
|
|
}
|
|
|
|
uint32_t cookiePermission = CheckCookiePermissionForPrincipal(
|
|
parentDocument->CookieSettings(), parentDocument->NodePrincipal());
|
|
if (cookiePermission != nsICookiePermission::ACCESS_DEFAULT) {
|
|
LOG(
|
|
("CheckCookiePermissionForPrincipal() returned a non-default access "
|
|
"code (%d), returning %s",
|
|
int(cookiePermission),
|
|
cookiePermission != nsICookiePermission::ACCESS_DENY ? "success"
|
|
: "failure"));
|
|
return cookiePermission != nsICookiePermission::ACCESS_DENY;
|
|
}
|
|
|
|
nsAutoCString origin;
|
|
nsresult rv = nsContentUtils::GetASCIIOrigin(aURI, origin);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
LOG_SPEC(("Failed to compute the origin from %s", _spec), aURI);
|
|
return false;
|
|
}
|
|
|
|
nsAutoCString type;
|
|
CreatePermissionKey(origin, type);
|
|
|
|
nsPermissionManager* permManager = nsPermissionManager::GetInstance();
|
|
if (NS_WARN_IF(!permManager)) {
|
|
LOG(("Failed to obtain the permission manager"));
|
|
return false;
|
|
}
|
|
|
|
uint32_t result = 0;
|
|
rv = permManager->TestPermissionWithoutDefaultsFromPrincipal(
|
|
parentDocument->NodePrincipal(), type, &result);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
LOG(("Failed to test the permission"));
|
|
return false;
|
|
}
|
|
|
|
if (MOZ_LOG_TEST(gAntiTrackingLog, LogLevel::Debug)) {
|
|
nsCOMPtr<nsIURI> parentPrincipalURI;
|
|
Unused << parentDocument->NodePrincipal()->GetURI(
|
|
getter_AddRefs(parentPrincipalURI));
|
|
LOG_SPEC(
|
|
("Testing permission type %s for %s resulted in %d (%s)", type.get(),
|
|
_spec, int(result),
|
|
result == nsIPermissionManager::ALLOW_ACTION ? "success" : "failure"),
|
|
parentPrincipalURI);
|
|
}
|
|
|
|
return result == nsIPermissionManager::ALLOW_ACTION;
|
|
}
|
|
|
|
nsresult AntiTrackingCommon::IsOnContentBlockingAllowList(
|
|
nsIURI* aTopWinURI, bool aIsPrivateBrowsing,
|
|
AntiTrackingCommon::ContentBlockingAllowListPurpose aPurpose,
|
|
bool& aIsAllowListed) {
|
|
aIsAllowListed = false;
|
|
|
|
// For storage checks, check the storage pref, and for annotations checks,
|
|
// check the corresponding pref as well. This allows each set of checks to
|
|
// be disabled individually if needed.
|
|
if ((aPurpose == eStorageChecks &&
|
|
!StaticPrefs::browser_contentblocking_allowlist_storage_enabled()) ||
|
|
(aPurpose == eTrackingAnnotations &&
|
|
!StaticPrefs::browser_contentblocking_allowlist_annotations_enabled()) ||
|
|
(aPurpose == eFingerprinting &&
|
|
!StaticPrefs::privacy_trackingprotection_fingerprinting_enabled()) ||
|
|
(aPurpose == eCryptomining &&
|
|
!StaticPrefs::privacy_trackingprotection_cryptomining_enabled()) ||
|
|
(aPurpose == eSocialTracking &&
|
|
!StaticPrefs::privacy_trackingprotection_socialtracking_enabled())) {
|
|
LOG(
|
|
("Attempting to check the content blocking allow list aborted because "
|
|
"the third-party cookies UI has been disabled."));
|
|
return NS_OK;
|
|
}
|
|
|
|
LOG_SPEC(("Deciding whether the user has overridden content blocking for %s",
|
|
_spec),
|
|
aTopWinURI);
|
|
|
|
// Take the host/port portion so we can allowlist by site. Also ignore the
|
|
// scheme, since users who put sites on the allowlist probably don't expect
|
|
// allowlisting to depend on scheme.
|
|
nsAutoCString escaped(NS_LITERAL_CSTRING("https://"));
|
|
nsAutoCString temp;
|
|
nsresult rv = aTopWinURI ? aTopWinURI->GetHostPort(temp) : NS_ERROR_FAILURE;
|
|
// GetHostPort returns an empty string (with a success error code) for file://
|
|
// URIs.
|
|
if (NS_FAILED(rv) || temp.IsEmpty()) {
|
|
return rv; // normal for some loads, no need to print a warning
|
|
}
|
|
escaped.Append(temp);
|
|
|
|
nsPermissionManager* permManager = nsPermissionManager::GetInstance();
|
|
NS_ENSURE_TRUE(permManager, NS_ERROR_FAILURE);
|
|
|
|
// Check both the normal mode and private browsing mode user override
|
|
// permissions.
|
|
Pair<const nsLiteralCString, bool> types[] = {
|
|
{NS_LITERAL_CSTRING("trackingprotection"), false},
|
|
{NS_LITERAL_CSTRING("trackingprotection-pb"), true}};
|
|
|
|
auto topWinURI = PromiseFlatCString(escaped);
|
|
for (size_t i = 0; i < ArrayLength(types); ++i) {
|
|
if (aIsPrivateBrowsing != types[i].second()) {
|
|
continue;
|
|
}
|
|
|
|
uint32_t permissions = nsIPermissionManager::UNKNOWN_ACTION;
|
|
rv = permManager->TestPermissionOriginNoSuffix(topWinURI, types[i].first(),
|
|
&permissions);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
if (permissions == nsIPermissionManager::ALLOW_ACTION) {
|
|
aIsAllowListed = true;
|
|
LOG(("Found user override type %s for %s", types[i].first().get(),
|
|
topWinURI.get()));
|
|
// Stop checking the next permisson type if we decided to override.
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!aIsAllowListed) {
|
|
LOG(("No user override found"));
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
/* static */
|
|
void AntiTrackingCommon::NotifyBlockingDecision(nsIChannel* aChannel,
|
|
BlockingDecision aDecision,
|
|
uint32_t aRejectedReason) {
|
|
MOZ_ASSERT(
|
|
aRejectedReason == 0 ||
|
|
aRejectedReason ==
|
|
nsIWebProgressListener::STATE_COOKIES_BLOCKED_BY_PERMISSION ||
|
|
aRejectedReason ==
|
|
nsIWebProgressListener::STATE_COOKIES_BLOCKED_TRACKER ||
|
|
aRejectedReason ==
|
|
nsIWebProgressListener::STATE_COOKIES_PARTITIONED_FOREIGN ||
|
|
aRejectedReason == nsIWebProgressListener::STATE_COOKIES_BLOCKED_ALL ||
|
|
aRejectedReason == nsIWebProgressListener::STATE_COOKIES_BLOCKED_FOREIGN);
|
|
MOZ_ASSERT(aDecision == BlockingDecision::eBlock ||
|
|
aDecision == BlockingDecision::eAllow);
|
|
|
|
if (!aChannel) {
|
|
return;
|
|
}
|
|
|
|
// Can be called in EITHER the parent or child process.
|
|
if (XRE_IsParentProcess()) {
|
|
nsCOMPtr<nsIParentChannel> parentChannel;
|
|
NS_QueryNotificationCallbacks(aChannel, parentChannel);
|
|
if (parentChannel) {
|
|
// This channel is a parent-process proxy for a child process request.
|
|
// Tell the child process channel to do this instead.
|
|
if (aDecision == BlockingDecision::eBlock) {
|
|
parentChannel->NotifyCookieBlocked(aRejectedReason);
|
|
} else {
|
|
parentChannel->NotifyCookieAllowed();
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
|
|
MOZ_ASSERT(XRE_IsContentProcess());
|
|
|
|
nsCOMPtr<mozIThirdPartyUtil> thirdPartyUtil = services::GetThirdPartyUtil();
|
|
if (!thirdPartyUtil) {
|
|
return;
|
|
}
|
|
|
|
nsCOMPtr<nsIURI> uriBeingLoaded = MaybeGetDocumentURIBeingLoaded(aChannel);
|
|
nsCOMPtr<mozIDOMWindowProxy> win;
|
|
nsresult rv = thirdPartyUtil->GetTopWindowForChannel(aChannel, uriBeingLoaded,
|
|
getter_AddRefs(win));
|
|
NS_ENSURE_SUCCESS_VOID(rv);
|
|
|
|
nsCOMPtr<nsPIDOMWindowOuter> pwin = nsPIDOMWindowOuter::From(win);
|
|
if (!pwin) {
|
|
return;
|
|
}
|
|
|
|
nsCOMPtr<nsIURI> uri;
|
|
aChannel->GetURI(getter_AddRefs(uri));
|
|
|
|
if (aDecision == BlockingDecision::eBlock) {
|
|
pwin->NotifyContentBlockingEvent(aRejectedReason, aChannel, true, uri,
|
|
aChannel);
|
|
|
|
ReportBlockingToConsole(pwin, uri, aRejectedReason);
|
|
}
|
|
|
|
pwin->NotifyContentBlockingEvent(nsIWebProgressListener::STATE_COOKIES_LOADED,
|
|
aChannel, false, uri, aChannel);
|
|
}
|
|
|
|
/* static */
|
|
void AntiTrackingCommon::NotifyBlockingDecision(nsPIDOMWindowInner* aWindow,
|
|
BlockingDecision aDecision,
|
|
uint32_t aRejectedReason) {
|
|
MOZ_ASSERT(aWindow);
|
|
MOZ_ASSERT(
|
|
aRejectedReason == 0 ||
|
|
aRejectedReason ==
|
|
nsIWebProgressListener::STATE_COOKIES_BLOCKED_BY_PERMISSION ||
|
|
aRejectedReason ==
|
|
nsIWebProgressListener::STATE_COOKIES_BLOCKED_TRACKER ||
|
|
aRejectedReason ==
|
|
nsIWebProgressListener::STATE_COOKIES_PARTITIONED_FOREIGN ||
|
|
aRejectedReason == nsIWebProgressListener::STATE_COOKIES_BLOCKED_ALL ||
|
|
aRejectedReason == nsIWebProgressListener::STATE_COOKIES_BLOCKED_FOREIGN);
|
|
MOZ_ASSERT(aDecision == BlockingDecision::eBlock ||
|
|
aDecision == BlockingDecision::eAllow);
|
|
|
|
nsCOMPtr<nsPIDOMWindowOuter> pwin = GetTopWindow(aWindow);
|
|
if (!pwin) {
|
|
return;
|
|
}
|
|
|
|
nsPIDOMWindowInner* inner = pwin->GetCurrentInnerWindow();
|
|
if (!inner) {
|
|
return;
|
|
}
|
|
Document* pwinDoc = inner->GetExtantDoc();
|
|
if (!pwinDoc) {
|
|
return;
|
|
}
|
|
nsIChannel* channel = pwinDoc->GetChannel();
|
|
if (!channel) {
|
|
return;
|
|
}
|
|
|
|
Document* document = aWindow->GetExtantDoc();
|
|
if (!document) {
|
|
return;
|
|
}
|
|
nsIURI* uri = document->GetDocumentURI();
|
|
nsIChannel* trackingChannel = document->GetChannel();
|
|
|
|
if (aDecision == BlockingDecision::eBlock) {
|
|
pwin->NotifyContentBlockingEvent(aRejectedReason, channel, true, uri,
|
|
trackingChannel);
|
|
|
|
ReportBlockingToConsole(pwin, uri, aRejectedReason);
|
|
}
|
|
|
|
pwin->NotifyContentBlockingEvent(nsIWebProgressListener::STATE_COOKIES_LOADED,
|
|
channel, false, uri, trackingChannel);
|
|
}
|
|
|
|
/* static */
|
|
void AntiTrackingCommon::StoreUserInteractionFor(nsIPrincipal* aPrincipal) {
|
|
if (XRE_IsParentProcess()) {
|
|
nsCOMPtr<nsIURI> uri;
|
|
Unused << aPrincipal->GetURI(getter_AddRefs(uri));
|
|
LOG_SPEC(("Saving the userInteraction for %s", _spec), uri);
|
|
|
|
nsPermissionManager* permManager = nsPermissionManager::GetInstance();
|
|
if (NS_WARN_IF(!permManager)) {
|
|
LOG(("Permission manager is null, bailing out early"));
|
|
return;
|
|
}
|
|
|
|
// Remember that this pref is stored in seconds!
|
|
uint32_t expirationType = nsIPermissionManager::EXPIRE_TIME;
|
|
uint32_t expirationTime =
|
|
StaticPrefs::privacy_userInteraction_expiration() * 1000;
|
|
int64_t when = (PR_Now() / PR_USEC_PER_MSEC) + expirationTime;
|
|
|
|
uint32_t privateBrowsingId = 0;
|
|
nsresult rv = aPrincipal->GetPrivateBrowsingId(&privateBrowsingId);
|
|
if (!NS_WARN_IF(NS_FAILED(rv)) && privateBrowsingId > 0) {
|
|
// If we are coming from a private window, make sure to store a
|
|
// session-only permission which won't get persisted to disk.
|
|
expirationType = nsIPermissionManager::EXPIRE_SESSION;
|
|
when = 0;
|
|
}
|
|
|
|
rv = permManager->AddFromPrincipal(aPrincipal, USER_INTERACTION_PERM,
|
|
nsIPermissionManager::ALLOW_ACTION,
|
|
expirationType, when);
|
|
Unused << NS_WARN_IF(NS_FAILED(rv));
|
|
return;
|
|
}
|
|
|
|
ContentChild* cc = ContentChild::GetSingleton();
|
|
MOZ_ASSERT(cc);
|
|
|
|
nsCOMPtr<nsIURI> uri;
|
|
Unused << aPrincipal->GetURI(getter_AddRefs(uri));
|
|
LOG_SPEC(("Asking the parent process to save the user-interaction for us: %s",
|
|
_spec),
|
|
uri);
|
|
cc->SendStoreUserInteractionAsPermission(IPC::Principal(aPrincipal));
|
|
}
|
|
|
|
/* static */
|
|
bool AntiTrackingCommon::HasUserInteraction(nsIPrincipal* aPrincipal) {
|
|
nsPermissionManager* permManager = nsPermissionManager::GetInstance();
|
|
if (NS_WARN_IF(!permManager)) {
|
|
return false;
|
|
}
|
|
|
|
uint32_t result = 0;
|
|
nsresult rv = permManager->TestPermissionWithoutDefaultsFromPrincipal(
|
|
aPrincipal, USER_INTERACTION_PERM, &result);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return false;
|
|
}
|
|
|
|
return result == nsIPermissionManager::ALLOW_ACTION;
|
|
}
|
|
|
|
// static
|
|
void AntiTrackingCommon::OnAntiTrackingSettingsChanged(
|
|
const AntiTrackingCommon::AntiTrackingSettingsChangedCallback& aCallback) {
|
|
static bool initialized = false;
|
|
if (!initialized) {
|
|
// It is possible that while we have some data in our cache, something
|
|
// changes in our environment that causes the anti-tracking checks below to
|
|
// change their response. Therefore, we need to clear our cache when we
|
|
// detect a related change.
|
|
Preferences::RegisterPrefixCallback(
|
|
SettingsChangeObserver::PrivacyPrefChanged, "browser.contentblocking.");
|
|
Preferences::RegisterPrefixCallback(
|
|
SettingsChangeObserver::PrivacyPrefChanged, "network.cookie.");
|
|
Preferences::RegisterPrefixCallback(
|
|
SettingsChangeObserver::PrivacyPrefChanged, "privacy.");
|
|
|
|
nsCOMPtr<nsIObserverService> obs = services::GetObserverService();
|
|
if (obs) {
|
|
RefPtr<SettingsChangeObserver> observer = new SettingsChangeObserver();
|
|
obs->AddObserver(observer, "perm-added", false);
|
|
obs->AddObserver(observer, "perm-changed", false);
|
|
obs->AddObserver(observer, "perm-cleared", false);
|
|
obs->AddObserver(observer, "perm-deleted", false);
|
|
obs->AddObserver(observer, "xpcom-shutdown", false);
|
|
}
|
|
|
|
gSettingsChangedCallbacks =
|
|
MakeUnique<nsTArray<AntiTrackingSettingsChangedCallback>>();
|
|
|
|
initialized = true;
|
|
}
|
|
|
|
gSettingsChangedCallbacks->AppendElement(aCallback);
|
|
}
|
|
|
|
/* static */
|
|
already_AddRefed<nsIURI> AntiTrackingCommon::MaybeGetDocumentURIBeingLoaded(
|
|
nsIChannel* aChannel) {
|
|
nsCOMPtr<nsIURI> uriBeingLoaded;
|
|
nsLoadFlags loadFlags = 0;
|
|
nsresult rv = aChannel->GetLoadFlags(&loadFlags);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return nullptr;
|
|
}
|
|
if (loadFlags & nsIChannel::LOAD_DOCUMENT_URI) {
|
|
// If the channel being loaded is a document channel, this call may be
|
|
// coming from an OnStopRequest notification, which might mean that our
|
|
// document may still be in the loading process, so we may need to pass in
|
|
// the uriBeingLoaded argument explicitly.
|
|
rv = aChannel->GetURI(getter_AddRefs(uriBeingLoaded));
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return nullptr;
|
|
}
|
|
}
|
|
return uriBeingLoaded.forget();
|
|
}
|