forked from mirrors/gecko-dev
9a096cb89d
Calling this function is just a waste of time since we will check third-partiness a few statements further down. Differential Revision: https://phabricator.services.mozilla.com/D13500 --HG-- extra : moz-landing-system : lando
1606 lines
55 KiB
C++
1606 lines
55 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/IntegerPrintfMacros.h"
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#include "mozilla/Logging.h"
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#include "mozilla/Pair.h"
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#include "mozilla/StaticPrefs.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 "nsCookiePermission.h"
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#include "nsICookieService.h"
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#include "nsIDocShell.h"
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#include "nsIEffectiveTLDService.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 "nsIPermissionManager.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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static LazyLogModule gAntiTrackingLog("AntiTracking");
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static const nsCString::size_type sMaxSpecLength = 128;
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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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bool GetParentPrincipalAndTrackingOrigin(
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nsGlobalWindowInner* a3rdPartyTrackingWindow,
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nsIPrincipal** aTopLevelStoragePrincipal, nsACString& aTrackingOrigin,
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nsIURI** aTrackingURI, nsIPrincipal** aTrackingPrincipal) {
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if (!nsContentUtils::IsThirdPartyTrackingResourceWindow(
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a3rdPartyTrackingWindow)) {
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return false;
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}
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nsIDocument* doc = a3rdPartyTrackingWindow->GetDocument();
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// Make sure storage access isn't disabled
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if (doc && ((doc->GetSandboxFlags() & SANDBOXED_STORAGE_ACCESS) != 0 ||
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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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a3rdPartyTrackingWindow->GetTopLevelStorageAreaPrincipal();
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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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const nsCString& aGrantedOrigin,
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nsACString& aPermissionKey) {
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if (aTrackingOrigin == aGrantedOrigin) {
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aPermissionKey =
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nsPrintfCString(ANTITRACKING_PERM_KEY "^%s", aTrackingOrigin.get());
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return;
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}
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aPermissionKey = nsPrintfCString(ANTITRACKING_PERM_KEY "^%s^%s",
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aTrackingOrigin.get(), aGrantedOrigin.get());
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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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nsCookieAccess CheckCookiePermissionForPrincipal(nsIPrincipal* aPrincipal) {
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nsCookieAccess access = nsICookiePermission::ACCESS_DEFAULT;
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if (!aPrincipal->GetIsCodebasePrincipal()) {
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return access;
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}
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nsCOMPtr<nsICookiePermission> cps = nsCookiePermission::GetOrCreate();
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nsresult rv = cps->CanAccess(aPrincipal, &access);
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if (NS_WARN_IF(NS_FAILED(rv))) {
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return access;
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}
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// If we have a custom cookie permission, let's use it.
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return access;
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}
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int32_t CookiesBehavior(nsIPrincipal* aTopLevelPrincipal,
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nsIPrincipal* a3rdPartyPrincipal) {
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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(aTopLevelPrincipal)->AddonPolicy()) {
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return nsICookieService::BEHAVIOR_ACCEPT;
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}
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if (a3rdPartyPrincipal &&
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BasePrincipal::Cast(a3rdPartyPrincipal)->AddonPolicy()) {
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return nsICookieService::BEHAVIOR_ACCEPT;
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}
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return StaticPrefs::network_cookie_cookieBehavior();
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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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nsPIDOMWindowOuter* top = aWindow->GetScriptableTop();
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if (top) {
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nsIURI* topWinURI = top->GetDocumentURI();
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nsIDocument* doc = top->GetExtantDoc();
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bool isPrivateBrowsing =
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doc ? nsContentUtils::IsInPrivateBrowsing(doc) : false;
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return CheckContentBlockingAllowList(topWinURI, isPrivateBrowsing);
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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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return false;
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}
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bool CheckContentBlockingAllowList(nsIHttpChannel* aChannel) {
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nsCOMPtr<nsIHttpChannelInternal> chan = do_QueryInterface(aChannel);
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if (chan) {
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nsCOMPtr<nsIURI> topWinURI;
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nsresult rv = chan->GetTopWindowURI(getter_AddRefs(topWinURI));
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if (NS_SUCCEEDED(rv)) {
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return CheckContentBlockingAllowList(topWinURI,
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NS_UsePrivateBrowsing(aChannel));
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}
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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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return false;
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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 == 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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nsCOMPtr<nsIDocument> 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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const char* message = nullptr;
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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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break;
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case nsIWebProgressListener::STATE_COOKIES_BLOCKED_TRACKER:
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message = "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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break;
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case nsIWebProgressListener::STATE_COOKIES_BLOCKED_FOREIGN:
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message = "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
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// presented in the UI.
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nsCOMPtr<nsIURIFixup> urifixup = services::GetURIFixup();
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NS_ENSURE_TRUE_VOID(urifixup);
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nsCOMPtr<nsIURI> exposableURI;
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nsresult rv =
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urifixup->CreateExposableURI(aURI, getter_AddRefs(exposableURI));
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NS_ENSURE_SUCCESS_VOID(rv);
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NS_ConvertUTF8toUTF16 spec(exposableURI->GetSpecOrDefault());
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const char16_t* params[] = {spec.get()};
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nsContentUtils::ReportToConsole(
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nsIScriptError::warningFlag, NS_LITERAL_CSTRING("Content Blocking"), doc,
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nsContentUtils::eNECKO_PROPERTIES, message, params, ArrayLength(params));
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}
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void ReportUnblockingConsole(
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nsPIDOMWindowInner* aWindow, const nsAString& aTrackingOrigin,
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const nsAString& aGrantedOrigin,
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AntiTrackingCommon::StorageAccessGrantedReason aReason) {
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nsCOMPtr<nsIPrincipal> principal =
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nsGlobalWindowInner::Cast(aWindow)->GetPrincipal();
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if (NS_WARN_IF(!principal)) {
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return;
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}
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nsAutoString origin;
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nsresult rv = nsContentUtils::GetUTFOrigin(principal, origin);
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if (NS_WARN_IF(NS_FAILED(rv))) {
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return;
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}
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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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nsCOMPtr<nsIDocument> 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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const char16_t* params[] = {origin.BeginReading(),
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aTrackingOrigin.BeginReading(),
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aGrantedOrigin.BeginReading()};
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const char* messageWithDifferentOrigin = nullptr;
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const char* messageWithSameOrigin = nullptr;
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switch (aReason) {
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case AntiTrackingCommon::eStorageAccessAPI:
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messageWithDifferentOrigin =
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"CookieAllowedForOriginOnTrackerByStorageAccessAPI";
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messageWithSameOrigin = "CookieAllowedForTrackerByStorageAccessAPI";
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break;
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case AntiTrackingCommon::eOpenerAfterUserInteraction:
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MOZ_FALLTHROUGH;
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case AntiTrackingCommon::eOpener:
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messageWithDifferentOrigin = "CookieAllowedForOriginOnTrackerByHeuristic";
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messageWithSameOrigin = "CookieAllowedForTrackerByHeuristic";
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break;
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}
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if (aTrackingOrigin == aGrantedOrigin) {
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nsContentUtils::ReportToConsole(nsIScriptError::warningFlag,
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NS_LITERAL_CSTRING("Content Blocking"), doc,
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nsContentUtils::eNECKO_PROPERTIES,
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messageWithSameOrigin, params, 2);
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} else {
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nsContentUtils::ReportToConsole(nsIScriptError::warningFlag,
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NS_LITERAL_CSTRING("Content Blocking"), doc,
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nsContentUtils::eNECKO_PROPERTIES,
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messageWithDifferentOrigin, params, 3);
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}
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}
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already_AddRefed<nsPIDOMWindowOuter> GetTopWindow(nsPIDOMWindowInner* aWindow) {
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nsIDocument* document = aWindow->GetExtantDoc();
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if (!document) {
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return nullptr;
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}
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nsIChannel* channel = document->GetChannel();
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if (!channel) {
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return nullptr;
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}
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nsCOMPtr<nsPIDOMWindowOuter> pwin;
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auto* outer = nsGlobalWindowOuter::Cast(aWindow->GetOuterWindow());
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if (outer) {
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pwin = outer->GetTopOuter();
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}
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if (!pwin) {
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return nullptr;
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}
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return pwin.forget();
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}
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bool CompareBaseDomains(nsIURI* aTrackingURI, nsIURI* aParentPrincipalBaseURI) {
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nsCOMPtr<nsIEffectiveTLDService> eTLDService =
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services::GetEffectiveTLDService();
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if (NS_WARN_IF(!eTLDService)) {
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LOG(("Failed to get the TLD service"));
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return false;
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}
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nsAutoCString trackingBaseDomain;
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nsAutoCString parentPrincipalBaseDomain;
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nsresult rv = eTLDService->GetBaseDomain(aTrackingURI, 0, trackingBaseDomain);
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if (NS_WARN_IF(NS_FAILED(rv))) {
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LOG(("Can't get the base domain from tracking URI"));
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return false;
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}
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rv = eTLDService->GetBaseDomain(aParentPrincipalBaseURI, 0,
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parentPrincipalBaseDomain);
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if (NS_WARN_IF(NS_FAILED(rv))) {
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LOG(("Can't get the base domain from parent principal"));
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return false;
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}
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return trackingBaseDomain.Equals(parentPrincipalBaseDomain,
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nsCaseInsensitiveCStringComparator());
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}
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class TemporaryAccessGrantObserver final : public nsIObserver {
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public:
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NS_DECL_ISUPPORTS
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NS_DECL_NSIOBSERVER
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static void Create(nsIPermissionManager* aPM, nsIPrincipal* aPrincipal,
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const nsACString& aType) {
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nsCOMPtr<nsITimer> timer;
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RefPtr<TemporaryAccessGrantObserver> observer =
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new TemporaryAccessGrantObserver(aPM, aPrincipal, aType);
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nsresult rv = NS_NewTimerWithObserver(getter_AddRefs(timer), observer,
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24 * 60 * 60 * 1000, // 24 hours
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nsITimer::TYPE_ONE_SHOT);
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if (NS_SUCCEEDED(rv)) {
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observer->SetTimer(timer);
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} else {
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timer->Cancel();
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}
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}
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void SetTimer(nsITimer* aTimer) {
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mTimer = aTimer;
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nsCOMPtr<nsIObserverService> observerService =
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mozilla::services::GetObserverService();
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if (observerService) {
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observerService->AddObserver(this, NS_XPCOM_SHUTDOWN_OBSERVER_ID, false);
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}
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}
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private:
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TemporaryAccessGrantObserver(nsIPermissionManager* aPM,
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nsIPrincipal* aPrincipal,
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const nsACString& aType)
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: mPM(aPM), mPrincipal(aPrincipal), mType(aType) {
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MOZ_ASSERT(XRE_IsParentProcess(),
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"Enforcing temporary access grant lifetimes can only be done in "
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"the parent process");
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}
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~TemporaryAccessGrantObserver() = default;
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private:
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nsCOMPtr<nsITimer> mTimer;
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nsCOMPtr<nsIPermissionManager> mPM;
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nsCOMPtr<nsIPrincipal> mPrincipal;
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nsCString mType;
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};
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NS_IMPL_ISUPPORTS(TemporaryAccessGrantObserver, nsIObserver)
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NS_IMETHODIMP
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TemporaryAccessGrantObserver::Observe(nsISupports* aSubject, const char* aTopic,
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const char16_t* aData) {
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if (strcmp(aTopic, NS_TIMER_CALLBACK_TOPIC) == 0) {
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Unused << mPM->RemoveFromPrincipal(mPrincipal, mType.get());
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} else if (strcmp(aTopic, NS_XPCOM_SHUTDOWN_OBSERVER_ID) == 0) {
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nsCOMPtr<nsIObserverService> observerService =
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mozilla::services::GetObserverService();
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if (observerService) {
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observerService->RemoveObserver(this, NS_XPCOM_SHUTDOWN_OBSERVER_ID);
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}
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if (mTimer) {
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mTimer->Cancel();
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mTimer = nullptr;
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}
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}
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return NS_OK;
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}
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} // namespace
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|
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/* static */ RefPtr<AntiTrackingCommon::StorageAccessGrantPromise>
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AntiTrackingCommon::AddFirstPartyStorageAccessGrantedFor(
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nsIPrincipal* aPrincipal, nsPIDOMWindowInner* aParentWindow,
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StorageAccessGrantedReason aReason,
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const AntiTrackingCommon::PerformFinalChecks& aPerformFinalChecks) {
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MOZ_ASSERT(aParentWindow);
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nsCOMPtr<nsIURI> uri;
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aPrincipal->GetURI(getter_AddRefs(uri));
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if (NS_WARN_IF(!uri)) {
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LOG(("Can't get the URI from the principal"));
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return StorageAccessGrantPromise::CreateAndReject(false, __func__);
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}
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|
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nsAutoString origin;
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nsresult rv = nsContentUtils::GetUTFOrigin(uri, origin);
|
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if (NS_WARN_IF(NS_FAILED(rv))) {
|
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LOG(("Can't get the origin from the URI"));
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return StorageAccessGrantPromise::CreateAndReject(false, __func__);
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}
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|
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LOG(("Adding a first-party storage exception for %s...",
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NS_ConvertUTF16toUTF8(origin).get()));
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|
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if (StaticPrefs::network_cookie_cookieBehavior() !=
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nsICookieService::BEHAVIOR_REJECT_TRACKER) {
|
|
LOG(
|
|
("Disabled by network.cookie.cookieBehavior pref (%d), bailing out "
|
|
"early",
|
|
StaticPrefs::network_cookie_cookieBehavior()));
|
|
return StorageAccessGrantPromise::CreateAndResolve(eAllowOnAnySite,
|
|
__func__);
|
|
}
|
|
|
|
if (CheckContentBlockingAllowList(aParentWindow)) {
|
|
return StorageAccessGrantPromise::CreateAndResolve(eAllowOnAnySite,
|
|
__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()) {
|
|
CopyUTF16toUTF8(origin, trackingOrigin);
|
|
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__);
|
|
}
|
|
|
|
// We are a 3rd party source.
|
|
} else if (!GetParentPrincipalAndTrackingOrigin(
|
|
parentWindow, 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->GetTop();
|
|
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 ((aReason != eOpenerAfterUserInteraction ||
|
|
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> {
|
|
NS_ConvertUTF16toUTF8 grantedOrigin(origin);
|
|
|
|
nsAutoCString permissionKey;
|
|
CreatePermissionKey(trackingOrigin, grantedOrigin, 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->NotifyContentBlockingState(blockReason, channel, false, trackingURI);
|
|
|
|
ReportUnblockingConsole(parentWindow, NS_ConvertUTF8toUTF16(trackingOrigin),
|
|
origin, aReason);
|
|
|
|
if (XRE_IsParentProcess()) {
|
|
LOG(("Saving the permission: trackingOrigin=%s, grantedOrigin=%s",
|
|
trackingOrigin.get(), grantedOrigin.get()));
|
|
|
|
return SaveFirstPartyStorageAccessGrantedForOriginOnParentProcess(
|
|
topLevelStoragePrincipal, trackingPrincipal, trackingOrigin,
|
|
grantedOrigin, 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(), grantedOrigin.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, grantedOrigin,
|
|
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__);
|
|
}
|
|
|
|
nsCOMPtr<nsIPermissionManager> pm = services::GetPermissionManager();
|
|
if (NS_WARN_IF(!pm)) {
|
|
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 = pm->AddFromPrincipal(aTrackingPrincipal, "cookie",
|
|
nsICookiePermission::ACCESS_ALLOW, expirationType,
|
|
when);
|
|
} else {
|
|
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 = pm->AddFromPrincipal(aParentPrincipal, type.get(),
|
|
nsIPermissionManager::ALLOW_ACTION,
|
|
expirationType, when);
|
|
|
|
if (NS_SUCCEEDED(rv) && (aAllowMode == eAllowAutoGrant)) {
|
|
// Make sure temporary access grants do not survive more than 24 hours.
|
|
TemporaryAccessGrantObserver::Create(pm, aParentPrincipal, type);
|
|
}
|
|
}
|
|
Unused << NS_WARN_IF(NS_FAILED(rv));
|
|
|
|
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, 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);
|
|
nsIPrincipal* windowPrincipal = innerWindow->GetPrincipal();
|
|
if (!windowPrincipal) {
|
|
LOG(("Our window has no principal"));
|
|
return false;
|
|
}
|
|
|
|
nsIPrincipal* toplevelPrincipal = innerWindow->GetTopLevelPrincipal();
|
|
if (!toplevelPrincipal) {
|
|
// We are already the top-level principal. Let's use the window's principal.
|
|
LOG(
|
|
("Our inner window lacks a top-level principal, use the window's "
|
|
"principal instead"));
|
|
toplevelPrincipal = windowPrincipal;
|
|
}
|
|
|
|
MOZ_ASSERT(toplevelPrincipal);
|
|
|
|
nsCookieAccess access = CheckCookiePermissionForPrincipal(toplevelPrincipal);
|
|
if (access != nsICookiePermission::ACCESS_DEFAULT) {
|
|
LOG(
|
|
("CheckCookiePermissionForPrincipal() returned a non-default access "
|
|
"code (%d) for top-level window's principal, returning %s",
|
|
int(access),
|
|
access != nsICookiePermission::ACCESS_DENY ? "success" : "failure"));
|
|
if (access != nsICookiePermission::ACCESS_DENY) {
|
|
return true;
|
|
}
|
|
|
|
*aRejectedReason =
|
|
nsIWebProgressListener::STATE_COOKIES_BLOCKED_BY_PERMISSION;
|
|
return false;
|
|
}
|
|
|
|
access = CheckCookiePermissionForPrincipal(windowPrincipal);
|
|
if (access != nsICookiePermission::ACCESS_DEFAULT) {
|
|
LOG(
|
|
("CheckCookiePermissionForPrincipal() returned a non-default access "
|
|
"code (%d) for window's principal, returning %s",
|
|
int(access),
|
|
access != nsICookiePermission::ACCESS_DENY ? "success" : "failure"));
|
|
if (access != nsICookiePermission::ACCESS_DENY) {
|
|
return true;
|
|
}
|
|
|
|
*aRejectedReason =
|
|
nsIWebProgressListener::STATE_COOKIES_BLOCKED_BY_PERMISSION;
|
|
return false;
|
|
}
|
|
|
|
int32_t behavior = CookiesBehavior(toplevelPrincipal, windowPrincipal);
|
|
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, third-partiness is implicily checked later below.
|
|
if (behavior != nsICookieService::BEHAVIOR_REJECT_TRACKER) {
|
|
// 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);
|
|
|
|
if (!nsContentUtils::IsThirdPartyTrackingResourceWindow(aWindow)) {
|
|
LOG(("Our window isn't a third-party tracking window"));
|
|
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(nsContentUtils::IsThirdPartyWindowOrChannel(
|
|
aWindow, nullptr, aURI) == NS_SUCCEEDED(rv));
|
|
}
|
|
#endif
|
|
|
|
nsCOMPtr<nsIPrincipal> parentPrincipal;
|
|
nsCOMPtr<nsIURI> parentPrincipalURI;
|
|
nsCOMPtr<nsIURI> trackingURI;
|
|
nsAutoCString trackingOrigin;
|
|
if (!GetParentPrincipalAndTrackingOrigin(
|
|
nsGlobalWindowInner::Cast(aWindow), getter_AddRefs(parentPrincipal),
|
|
trackingOrigin, getter_AddRefs(trackingURI), nullptr)) {
|
|
LOG(("Failed to obtain the parent principal and the tracking origin"));
|
|
return false;
|
|
}
|
|
Unused << parentPrincipal->GetURI(getter_AddRefs(parentPrincipalURI));
|
|
|
|
if (CompareBaseDomains(trackingURI, parentPrincipalURI)) {
|
|
LOG(
|
|
("Grant access across the same eTLD+1 because same domain trackers "
|
|
"are considered part of the same organization"));
|
|
|
|
return true;
|
|
}
|
|
|
|
nsAutoString origin;
|
|
nsresult rv = nsContentUtils::GetUTFOrigin(aURI, origin);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
LOG_SPEC(("Failed to compute the origin from %s", _spec), aURI);
|
|
return false;
|
|
}
|
|
|
|
NS_ConvertUTF16toUTF8 grantedOrigin(origin);
|
|
|
|
nsGlobalWindowOuter* outerWindow =
|
|
nsGlobalWindowOuter::Cast(aWindow->GetOuterWindow());
|
|
if (NS_WARN_IF(!outerWindow)) {
|
|
LOG(("No outer window."));
|
|
return false;
|
|
}
|
|
|
|
nsCOMPtr<nsPIDOMWindowOuter> topOuterWindow = outerWindow->GetTop();
|
|
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;
|
|
}
|
|
|
|
nsAutoCString type;
|
|
CreatePermissionKey(trackingOrigin, grantedOrigin, type);
|
|
|
|
if (topInnerWindow->HasStorageAccessGranted(type)) {
|
|
LOG(("Permission stored in the window. All good."));
|
|
return true;
|
|
}
|
|
|
|
nsCOMPtr<nsIPermissionManager> pm = services::GetPermissionManager();
|
|
if (NS_WARN_IF(!pm)) {
|
|
LOG(("Failed to obtain the permission manager"));
|
|
return false;
|
|
}
|
|
|
|
uint32_t result = 0;
|
|
rv = pm->TestPermissionFromPrincipal(parentPrincipal, type.get(), &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 = nsIWebProgressListener::STATE_COOKIES_BLOCKED_TRACKER;
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool AntiTrackingCommon::IsFirstPartyStorageAccessGrantedFor(
|
|
nsIHttpChannel* 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;
|
|
}
|
|
|
|
nsCOMPtr<nsIURI> channelURI;
|
|
Unused << aChannel->GetURI(getter_AddRefs(channelURI));
|
|
LOG_SPEC(
|
|
("Computing whether channel %p has access to URI %s", aChannel, _spec),
|
|
channelURI);
|
|
|
|
nsCOMPtr<nsILoadInfo> loadInfo = aChannel->GetLoadInfo();
|
|
if (!loadInfo) {
|
|
LOG(("No loadInfo, bail out early"));
|
|
return true;
|
|
}
|
|
|
|
// 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.
|
|
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<nsIPrincipal> channelPrincipal;
|
|
nsIScriptSecurityManager* ssm =
|
|
nsScriptSecurityManager::GetScriptSecurityManager();
|
|
nsresult rv = ssm->GetChannelResultPrincipal(
|
|
aChannel, getter_AddRefs(channelPrincipal));
|
|
|
|
// 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;
|
|
nsresult rv2 = aChannel->GetIsMainDocumentChannel(&isDocument);
|
|
if (NS_SUCCEEDED(rv) && NS_SUCCEEDED(rv2) && isDocument) {
|
|
toplevelPrincipal = channelPrincipal;
|
|
LOG(("Yes, we guessed right!"));
|
|
} 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;
|
|
}
|
|
|
|
nsCookieAccess access = CheckCookiePermissionForPrincipal(toplevelPrincipal);
|
|
if (access != nsICookiePermission::ACCESS_DEFAULT) {
|
|
LOG(
|
|
("CheckCookiePermissionForPrincipal() returned a non-default access "
|
|
"code (%d) for top-level window's principal, returning %s",
|
|
int(access),
|
|
access != nsICookiePermission::ACCESS_DENY ? "success" : "failure"));
|
|
if (access != nsICookiePermission::ACCESS_DENY) {
|
|
return true;
|
|
}
|
|
|
|
*aRejectedReason =
|
|
nsIWebProgressListener::STATE_COOKIES_BLOCKED_BY_PERMISSION;
|
|
return false;
|
|
}
|
|
|
|
if (NS_WARN_IF(NS_FAILED(rv) || !channelPrincipal)) {
|
|
LOG(("No channel principal, bail out early"));
|
|
return false;
|
|
}
|
|
|
|
access = CheckCookiePermissionForPrincipal(channelPrincipal);
|
|
if (access != nsICookiePermission::ACCESS_DEFAULT) {
|
|
LOG(
|
|
("CheckCookiePermissionForPrincipal() returned a non-default access "
|
|
"code (%d) for channel's principal, returning %s",
|
|
int(access),
|
|
access != nsICookiePermission::ACCESS_DENY ? "success" : "failure"));
|
|
if (access != nsICookiePermission::ACCESS_DENY) {
|
|
return true;
|
|
}
|
|
|
|
*aRejectedReason =
|
|
nsIWebProgressListener::STATE_COOKIES_BLOCKED_BY_PERMISSION;
|
|
return false;
|
|
}
|
|
|
|
int32_t behavior = CookiesBehavior(toplevelPrincipal, channelPrincipal);
|
|
if (behavior == nsICookieService::BEHAVIOR_ACCEPT) {
|
|
LOG(("The cookie behavior pref mandates accepting all cookies!"));
|
|
return true;
|
|
}
|
|
|
|
if (CheckContentBlockingAllowList(aChannel)) {
|
|
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);
|
|
|
|
// Not a tracker.
|
|
if (!aChannel->GetIsThirdPartyTrackingResource()) {
|
|
LOG(("Our channel isn't a third-party tracking channel"));
|
|
return true;
|
|
}
|
|
|
|
nsIPrincipal* parentPrincipal = loadInfo->GetTopLevelStorageAreaPrincipal();
|
|
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"));
|
|
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;
|
|
}
|
|
|
|
if (CompareBaseDomains(trackingURI, parentPrincipalURI)) {
|
|
LOG(
|
|
("Grant access across the same eTLD+1 because same domain trackers "
|
|
"are considered part of the same organization"));
|
|
|
|
return true;
|
|
}
|
|
|
|
nsAutoString trackingOrigin;
|
|
rv = nsContentUtils::GetUTFOrigin(trackingURI, trackingOrigin);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
LOG_SPEC(("Failed to compute the origin from %s", _spec), trackingURI);
|
|
return false;
|
|
}
|
|
|
|
nsAutoString origin;
|
|
rv = nsContentUtils::GetUTFOrigin(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(NS_ConvertUTF16toUTF8(trackingOrigin),
|
|
NS_ConvertUTF16toUTF8(origin), type);
|
|
|
|
nsCOMPtr<nsIPermissionManager> pm = services::GetPermissionManager();
|
|
if (NS_WARN_IF(!pm)) {
|
|
LOG(("Failed to obtain the permission manager"));
|
|
return false;
|
|
}
|
|
|
|
uint32_t result = 0;
|
|
rv = pm->TestPermissionFromPrincipal(parentPrincipal, type.get(), &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 = nsIWebProgressListener::STATE_COOKIES_BLOCKED_TRACKER;
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool AntiTrackingCommon::IsFirstPartyStorageAccessGrantedFor(
|
|
nsIPrincipal* aPrincipal) {
|
|
MOZ_ASSERT(aPrincipal);
|
|
|
|
nsCookieAccess access = CheckCookiePermissionForPrincipal(aPrincipal);
|
|
if (access != nsICookiePermission::ACCESS_DEFAULT) {
|
|
return access != nsICookiePermission::ACCESS_DENY;
|
|
}
|
|
|
|
int32_t behavior = CookiesBehavior(aPrincipal, nullptr);
|
|
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);
|
|
|
|
if (StaticPrefs::network_cookie_cookieBehavior() !=
|
|
nsICookieService::BEHAVIOR_REJECT_TRACKER) {
|
|
LOG(("Disabled by the pref (%d), bail out early",
|
|
StaticPrefs::network_cookie_cookieBehavior()));
|
|
return true;
|
|
}
|
|
|
|
if (CheckContentBlockingAllowList(aFirstPartyWindow)) {
|
|
return true;
|
|
}
|
|
|
|
if (!nsContentUtils::IsThirdPartyWindowOrChannel(aFirstPartyWindow, nullptr,
|
|
aURI)) {
|
|
LOG(("Our window isn't a third-party window"));
|
|
return true;
|
|
}
|
|
|
|
nsCOMPtr<nsIPrincipal> parentPrincipal =
|
|
nsGlobalWindowInner::Cast(aFirstPartyWindow)->GetPrincipal();
|
|
if (NS_WARN_IF(!parentPrincipal)) {
|
|
LOG(("Failed to get the first party window's principal"));
|
|
return false;
|
|
}
|
|
|
|
nsCookieAccess access = CheckCookiePermissionForPrincipal(parentPrincipal);
|
|
if (access != nsICookiePermission::ACCESS_DEFAULT) {
|
|
LOG(
|
|
("CheckCookiePermissionForPrincipal() returned a non-default access "
|
|
"code (%d), returning %s",
|
|
int(access),
|
|
access != nsICookiePermission::ACCESS_DENY ? "success" : "failure"));
|
|
return access != nsICookiePermission::ACCESS_DENY;
|
|
}
|
|
|
|
nsAutoString origin;
|
|
nsresult rv = nsContentUtils::GetUTFOrigin(aURI, origin);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
LOG_SPEC(("Failed to compute the origin from %s", _spec), aURI);
|
|
return false;
|
|
}
|
|
|
|
NS_ConvertUTF16toUTF8 utf8Origin(origin);
|
|
|
|
nsAutoCString type;
|
|
CreatePermissionKey(utf8Origin, utf8Origin, type);
|
|
|
|
nsCOMPtr<nsIPermissionManager> pm = services::GetPermissionManager();
|
|
if (NS_WARN_IF(!pm)) {
|
|
LOG(("Failed to obtain the permission manager"));
|
|
return false;
|
|
}
|
|
|
|
uint32_t result = 0;
|
|
rv = pm->TestPermissionFromPrincipal(parentPrincipal, type.get(), &result);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
LOG(("Failed to test the permission"));
|
|
return false;
|
|
}
|
|
|
|
nsCOMPtr<nsIURI> parentPrincipalURI;
|
|
Unused << parentPrincipal->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())) {
|
|
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);
|
|
|
|
nsCOMPtr<nsIIOService> ios = services::GetIOService();
|
|
NS_ENSURE_TRUE(ios, NS_ERROR_FAILURE);
|
|
|
|
// 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.
|
|
nsresult rv = NS_ERROR_FAILURE;
|
|
nsCOMPtr<nsIURL> url = do_QueryInterface(aTopWinURI, &rv);
|
|
if (NS_FAILED(rv)) {
|
|
return rv; // normal for some loads, no need to print a warning
|
|
}
|
|
|
|
nsCString escaped(NS_LITERAL_CSTRING("https://"));
|
|
nsAutoCString temp;
|
|
rv = url->GetHostPort(temp);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
escaped.Append(temp);
|
|
|
|
// Stuff the whole thing back into a URI for the permission manager.
|
|
nsCOMPtr<nsIURI> topWinURI;
|
|
rv = ios->NewURI(escaped, nullptr, nullptr, getter_AddRefs(topWinURI));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
nsCOMPtr<nsIPermissionManager> permMgr =
|
|
do_GetService(NS_PERMISSIONMANAGER_CONTRACTID, &rv);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
// Check both the normal mode and private browsing mode user override
|
|
// permissions.
|
|
Pair<const char*, bool> types[] = {{"trackingprotection", false},
|
|
{"trackingprotection-pb", true}};
|
|
|
|
for (size_t i = 0; i < ArrayLength(types); ++i) {
|
|
if (aIsPrivateBrowsing != types[i].second()) {
|
|
continue;
|
|
}
|
|
|
|
uint32_t permissions = nsIPermissionManager::UNKNOWN_ACTION;
|
|
rv = permMgr->TestPermission(topWinURI, types[i].first(), &permissions);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
if (permissions == nsIPermissionManager::ALLOW_ACTION) {
|
|
aIsAllowListed = true;
|
|
LOG_SPEC(("Found user override type %s for %s", types[i].first(), _spec),
|
|
topWinURI);
|
|
// 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_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.
|
|
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->NotifyTrackingCookieBlocked(aRejectedReason);
|
|
} else {
|
|
parentChannel->NotifyCookieAllowed();
|
|
}
|
|
return;
|
|
}
|
|
|
|
nsCOMPtr<mozIThirdPartyUtil> thirdPartyUtil = services::GetThirdPartyUtil();
|
|
if (!thirdPartyUtil) {
|
|
return;
|
|
}
|
|
|
|
nsCOMPtr<mozIDOMWindowProxy> win;
|
|
nsresult rv =
|
|
thirdPartyUtil->GetTopWindowForChannel(aChannel, 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->NotifyContentBlockingState(aRejectedReason, aChannel, true, uri);
|
|
|
|
ReportBlockingToConsole(pwin, uri, aRejectedReason);
|
|
}
|
|
|
|
pwin->NotifyContentBlockingState(nsIWebProgressListener::STATE_COOKIES_LOADED,
|
|
aChannel, false, uri);
|
|
}
|
|
|
|
/* 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_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;
|
|
}
|
|
nsIDocument* pwinDoc = inner->GetExtantDoc();
|
|
if (!pwinDoc) {
|
|
return;
|
|
}
|
|
nsIChannel* channel = pwinDoc->GetChannel();
|
|
if (!channel) {
|
|
return;
|
|
}
|
|
|
|
nsIDocument* document = aWindow->GetExtantDoc();
|
|
if (!document) {
|
|
return;
|
|
}
|
|
nsIURI* uri = document->GetDocumentURI();
|
|
|
|
if (aDecision == BlockingDecision::eBlock) {
|
|
pwin->NotifyContentBlockingState(aRejectedReason, channel, true, uri);
|
|
|
|
ReportBlockingToConsole(pwin, uri, aRejectedReason);
|
|
}
|
|
|
|
pwin->NotifyContentBlockingState(nsIWebProgressListener::STATE_COOKIES_LOADED,
|
|
channel, false, uri);
|
|
}
|
|
|
|
/* 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);
|
|
|
|
nsCOMPtr<nsIPermissionManager> pm = services::GetPermissionManager();
|
|
if (NS_WARN_IF(!pm)) {
|
|
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 = pm->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) {
|
|
nsCOMPtr<nsIPermissionManager> pm = services::GetPermissionManager();
|
|
if (NS_WARN_IF(!pm)) {
|
|
return false;
|
|
}
|
|
|
|
uint32_t result = 0;
|
|
nsresult rv = pm->TestPermissionFromPrincipal(aPrincipal,
|
|
USER_INTERACTION_PERM, &result);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return false;
|
|
}
|
|
|
|
return result == nsIPermissionManager::ALLOW_ACTION;
|
|
}
|