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-rw-r--r--docshell/base/nsDocShell.cpp13877
1 files changed, 13877 insertions, 0 deletions
diff --git a/docshell/base/nsDocShell.cpp b/docshell/base/nsDocShell.cpp
new file mode 100644
index 0000000000..57ee34cad0
--- /dev/null
+++ b/docshell/base/nsDocShell.cpp
@@ -0,0 +1,13877 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "nsDocShell.h"
+
+#include <algorithm>
+
+#ifdef XP_WIN
+# include <process.h>
+# define getpid _getpid
+#else
+# include <unistd.h> // for getpid()
+#endif
+
+#include "mozilla/ArrayUtils.h"
+#include "mozilla/Attributes.h"
+#include "mozilla/AutoRestore.h"
+#include "mozilla/BasePrincipal.h"
+#include "mozilla/Casting.h"
+#include "mozilla/CheckedInt.h"
+#include "mozilla/Components.h"
+#include "mozilla/DebugOnly.h"
+#include "mozilla/Encoding.h"
+#include "mozilla/EventStateManager.h"
+#include "mozilla/HTMLEditor.h"
+#include "mozilla/InputTaskManager.h"
+#include "mozilla/LoadInfo.h"
+#include "mozilla/Logging.h"
+#include "mozilla/MediaFeatureChange.h"
+#include "mozilla/ObservedDocShell.h"
+#include "mozilla/Preferences.h"
+#include "mozilla/PresShell.h"
+#include "mozilla/ResultExtensions.h"
+#include "mozilla/SchedulerGroup.h"
+#include "mozilla/ScopeExit.h"
+#include "mozilla/ScrollTypes.h"
+#include "mozilla/SimpleEnumerator.h"
+#include "mozilla/StaticPrefs_browser.h"
+#include "mozilla/StaticPrefs_docshell.h"
+#include "mozilla/StaticPrefs_dom.h"
+#include "mozilla/StaticPrefs_extensions.h"
+#include "mozilla/StaticPrefs_privacy.h"
+#include "mozilla/StaticPrefs_security.h"
+#include "mozilla/StaticPrefs_ui.h"
+#include "mozilla/StaticPrefs_fission.h"
+#include "mozilla/StartupTimeline.h"
+#include "mozilla/StorageAccess.h"
+#include "mozilla/StoragePrincipalHelper.h"
+#include "mozilla/Telemetry.h"
+
+#include "mozilla/Unused.h"
+#include "mozilla/WidgetUtils.h"
+
+#include "mozilla/dom/AutoEntryScript.h"
+#include "mozilla/dom/ChildProcessChannelListener.h"
+#include "mozilla/dom/ClientChannelHelper.h"
+#include "mozilla/dom/ClientHandle.h"
+#include "mozilla/dom/ClientInfo.h"
+#include "mozilla/dom/ClientManager.h"
+#include "mozilla/dom/ClientSource.h"
+#include "mozilla/dom/ContentChild.h"
+#include "mozilla/dom/ContentFrameMessageManager.h"
+#include "mozilla/dom/DocGroup.h"
+#include "mozilla/dom/Element.h"
+#include "mozilla/dom/HTMLAnchorElement.h"
+#include "mozilla/dom/HTMLIFrameElement.h"
+#include "mozilla/dom/PerformanceNavigation.h"
+#include "mozilla/dom/PermissionMessageUtils.h"
+#include "mozilla/dom/PopupBlocker.h"
+#include "mozilla/dom/ProfileTimelineMarkerBinding.h"
+#include "mozilla/dom/ScreenOrientation.h"
+#include "mozilla/dom/ScriptSettings.h"
+#include "mozilla/dom/ServiceWorkerInterceptController.h"
+#include "mozilla/dom/ServiceWorkerUtils.h"
+#include "mozilla/dom/SessionHistoryEntry.h"
+#include "mozilla/dom/SessionStorageManager.h"
+#include "mozilla/dom/SessionStoreChangeListener.h"
+#include "mozilla/dom/SessionStoreChild.h"
+#include "mozilla/dom/SessionStoreUtils.h"
+#include "mozilla/dom/BrowserChild.h"
+#include "mozilla/dom/ToJSValue.h"
+#include "mozilla/dom/UserActivation.h"
+#include "mozilla/dom/ChildSHistory.h"
+#include "mozilla/dom/nsCSPContext.h"
+#include "mozilla/dom/nsHTTPSOnlyUtils.h"
+#include "mozilla/dom/LoadURIOptionsBinding.h"
+#include "mozilla/dom/JSWindowActorChild.h"
+#include "mozilla/dom/DocumentBinding.h"
+#include "mozilla/ipc/ProtocolUtils.h"
+#include "mozilla/net/DocumentChannel.h"
+#include "mozilla/net/DocumentChannelChild.h"
+#include "mozilla/net/ParentChannelWrapper.h"
+#include "mozilla/net/UrlClassifierFeatureFactory.h"
+#include "ReferrerInfo.h"
+
+#include "nsIAuthPrompt.h"
+#include "nsIAuthPrompt2.h"
+#include "nsICachingChannel.h"
+#include "nsICaptivePortalService.h"
+#include "nsIChannel.h"
+#include "nsIChannelEventSink.h"
+#include "nsIClassOfService.h"
+#include "nsIConsoleReportCollector.h"
+#include "nsIContent.h"
+#include "nsIContentInlines.h"
+#include "nsIContentSecurityPolicy.h"
+#include "nsIContentViewer.h"
+#include "nsIController.h"
+#include "nsIDocShellTreeItem.h"
+#include "nsIDocShellTreeOwner.h"
+#include "mozilla/dom/Document.h"
+#include "nsHTMLDocument.h"
+#include "nsIDocumentLoaderFactory.h"
+#include "nsIDOMWindow.h"
+#include "nsIEditingSession.h"
+#include "nsIEffectiveTLDService.h"
+#include "nsIExternalProtocolService.h"
+#include "nsIFormPOSTActionChannel.h"
+#include "nsIFrame.h"
+#include "nsIGlobalObject.h"
+#include "nsIHttpChannel.h"
+#include "nsIHttpChannelInternal.h"
+#include "nsIIDNService.h"
+#include "nsIInputStreamChannel.h"
+#include "nsIInterfaceRequestorUtils.h"
+#include "nsILayoutHistoryState.h"
+#include "nsILoadInfo.h"
+#include "nsILoadURIDelegate.h"
+#include "nsIMultiPartChannel.h"
+#include "nsINestedURI.h"
+#include "nsINetworkPredictor.h"
+#include "nsINode.h"
+#include "nsINSSErrorsService.h"
+#include "nsIObserverService.h"
+#include "nsIOService.h"
+#include "nsIPrincipal.h"
+#include "nsIPrivacyTransitionObserver.h"
+#include "nsIPrompt.h"
+#include "nsIPromptCollection.h"
+#include "nsIPromptFactory.h"
+#include "nsIPublicKeyPinningService.h"
+#include "nsIReflowObserver.h"
+#include "nsIScriptChannel.h"
+#include "nsIScriptObjectPrincipal.h"
+#include "nsIScriptSecurityManager.h"
+#include "nsIScrollableFrame.h"
+#include "nsIScrollObserver.h"
+#include "nsISupportsPrimitives.h"
+#include "nsISecureBrowserUI.h"
+#include "nsISeekableStream.h"
+#include "nsISelectionDisplay.h"
+#include "nsISHEntry.h"
+#include "nsISiteSecurityService.h"
+#include "nsISocketProvider.h"
+#include "nsIStringBundle.h"
+#include "nsIStructuredCloneContainer.h"
+#include "nsIBrowserChild.h"
+#include "nsITextToSubURI.h"
+#include "nsITimedChannel.h"
+#include "nsITimer.h"
+#include "nsITransportSecurityInfo.h"
+#include "nsIUploadChannel.h"
+#include "nsIURIFixup.h"
+#include "nsIURIMutator.h"
+#include "nsIURILoader.h"
+#include "nsIViewSourceChannel.h"
+#include "nsIWebBrowserChrome.h"
+#include "nsIWebBrowserChromeFocus.h"
+#include "nsIWebBrowserFind.h"
+#include "nsIWebProgress.h"
+#include "nsIWidget.h"
+#include "nsIWindowWatcher.h"
+#include "nsIWritablePropertyBag2.h"
+#include "nsIX509Cert.h"
+#include "nsIXULRuntime.h"
+
+#include "nsCommandManager.h"
+#include "nsPIDOMWindow.h"
+#include "nsPIWindowRoot.h"
+
+#include "IHistory.h"
+#include "IUrlClassifierUITelemetry.h"
+
+#include "nsArray.h"
+#include "nsArrayUtils.h"
+#include "nsCExternalHandlerService.h"
+#include "nsContentDLF.h"
+#include "nsContentPolicyUtils.h" // NS_CheckContentLoadPolicy(...)
+#include "nsContentSecurityManager.h"
+#include "nsContentSecurityUtils.h"
+#include "nsContentUtils.h"
+#include "nsCURILoader.h"
+#include "nsDocShellCID.h"
+#include "nsDocShellEditorData.h"
+#include "nsDocShellEnumerator.h"
+#include "nsDocShellLoadState.h"
+#include "nsDocShellLoadTypes.h"
+#include "nsDOMCID.h"
+#include "nsDOMNavigationTiming.h"
+#include "nsDSURIContentListener.h"
+#include "nsEditingSession.h"
+#include "nsError.h"
+#include "nsEscape.h"
+#include "nsFocusManager.h"
+#include "nsGlobalWindow.h"
+#include "nsJSEnvironment.h"
+#include "nsNetCID.h"
+#include "nsNetUtil.h"
+#include "nsObjectLoadingContent.h"
+#include "nsPingListener.h"
+#include "nsPoint.h"
+#include "nsQueryObject.h"
+#include "nsQueryActor.h"
+#include "nsRect.h"
+#include "nsRefreshTimer.h"
+#include "nsSandboxFlags.h"
+#include "nsSHEntry.h"
+#include "nsSHistory.h"
+#include "nsSHEntry.h"
+#include "nsStructuredCloneContainer.h"
+#include "nsSubDocumentFrame.h"
+#include "nsURILoader.h"
+#include "nsURLHelper.h"
+#include "nsView.h"
+#include "nsViewManager.h"
+#include "nsViewSourceHandler.h"
+#include "nsWebBrowserFind.h"
+#include "nsWhitespaceTokenizer.h"
+#include "nsWidgetsCID.h"
+#include "nsXULAppAPI.h"
+
+#include "ThirdPartyUtil.h"
+#include "GeckoProfiler.h"
+#include "mozilla/NullPrincipal.h"
+#include "Navigator.h"
+#include "prenv.h"
+#include "mozilla/ipc/URIUtils.h"
+#include "sslerr.h"
+#include "mozpkix/pkix.h"
+#include "NSSErrorsService.h"
+
+#include "timeline/JavascriptTimelineMarker.h"
+#include "nsDocShellTelemetryUtils.h"
+
+#ifdef MOZ_PLACES
+# include "nsIFaviconService.h"
+# include "mozIPlacesPendingOperation.h"
+#endif
+
+#if NS_PRINT_PREVIEW
+# include "nsIDocumentViewerPrint.h"
+# include "nsIWebBrowserPrint.h"
+#endif
+
+using namespace mozilla;
+using namespace mozilla::dom;
+using namespace mozilla::net;
+
+using mozilla::ipc::Endpoint;
+
+// Threshold value in ms for META refresh based redirects
+#define REFRESH_REDIRECT_TIMER 15000
+
+static mozilla::LazyLogModule gCharsetMenuLog("CharsetMenu");
+
+#define LOGCHARSETMENU(args) \
+ MOZ_LOG(gCharsetMenuLog, mozilla::LogLevel::Debug, args)
+
+#ifdef DEBUG
+unsigned long nsDocShell::gNumberOfDocShells = 0;
+static uint64_t gDocshellIDCounter = 0;
+
+static mozilla::LazyLogModule gDocShellLog("nsDocShell");
+static mozilla::LazyLogModule gDocShellAndDOMWindowLeakLogging(
+ "DocShellAndDOMWindowLeak");
+#endif
+static mozilla::LazyLogModule gDocShellLeakLog("nsDocShellLeak");
+extern mozilla::LazyLogModule gPageCacheLog;
+mozilla::LazyLogModule gSHLog("SessionHistory");
+extern mozilla::LazyLogModule gSHIPBFCacheLog;
+
+const char kAppstringsBundleURL[] =
+ "chrome://global/locale/appstrings.properties";
+
+static bool IsTopLevelDoc(BrowsingContext* aBrowsingContext,
+ nsILoadInfo* aLoadInfo) {
+ MOZ_ASSERT(aBrowsingContext);
+ MOZ_ASSERT(aLoadInfo);
+
+ if (aLoadInfo->GetExternalContentPolicyType() !=
+ ExtContentPolicy::TYPE_DOCUMENT) {
+ return false;
+ }
+
+ return aBrowsingContext->IsTopContent();
+}
+
+// True if loading for top level document loading in active tab.
+static bool IsUrgentStart(BrowsingContext* aBrowsingContext,
+ nsILoadInfo* aLoadInfo, uint32_t aLoadType) {
+ MOZ_ASSERT(aBrowsingContext);
+ MOZ_ASSERT(aLoadInfo);
+
+ if (!IsTopLevelDoc(aBrowsingContext, aLoadInfo)) {
+ return false;
+ }
+
+ if (aLoadType &
+ (nsIDocShell::LOAD_CMD_NORMAL | nsIDocShell::LOAD_CMD_HISTORY)) {
+ return true;
+ }
+
+ return aBrowsingContext->IsActive();
+}
+
+nsDocShell::nsDocShell(BrowsingContext* aBrowsingContext,
+ uint64_t aContentWindowID)
+ : nsDocLoader(true),
+ mContentWindowID(aContentWindowID),
+ mBrowsingContext(aBrowsingContext),
+ mParentCharset(nullptr),
+ mTreeOwner(nullptr),
+ mScrollbarPref(ScrollbarPreference::Auto),
+ mCharsetReloadState(eCharsetReloadInit),
+ mParentCharsetSource(0),
+ mFrameMargins(-1, -1),
+ mItemType(aBrowsingContext->IsContent() ? typeContent : typeChrome),
+ mPreviousEntryIndex(-1),
+ mLoadedEntryIndex(-1),
+ mBusyFlags(BUSY_FLAGS_NONE),
+ mAppType(nsIDocShell::APP_TYPE_UNKNOWN),
+ mLoadType(0),
+ mFailedLoadType(0),
+ mJSRunToCompletionDepth(0),
+ mMetaViewportOverride(nsIDocShell::META_VIEWPORT_OVERRIDE_NONE),
+ mChannelToDisconnectOnPageHide(0),
+ mCreatingDocument(false),
+#ifdef DEBUG
+ mInEnsureScriptEnv(false),
+#endif
+ mInitialized(false),
+ mAllowSubframes(true),
+ mAllowMetaRedirects(true),
+ mAllowImages(true),
+ mAllowMedia(true),
+ mAllowDNSPrefetch(true),
+ mAllowWindowControl(true),
+ mCSSErrorReportingEnabled(false),
+ mAllowAuth(mItemType == typeContent),
+ mAllowKeywordFixup(false),
+ mDisableMetaRefreshWhenInactive(false),
+ mWindowDraggingAllowed(false),
+ mInFrameSwap(false),
+ mFiredUnloadEvent(false),
+ mEODForCurrentDocument(false),
+ mURIResultedInDocument(false),
+ mIsBeingDestroyed(false),
+ mIsExecutingOnLoadHandler(false),
+ mSavingOldViewer(false),
+ mInvisible(false),
+ mHasLoadedNonBlankURI(false),
+ mBlankTiming(false),
+ mTitleValidForCurrentURI(false),
+ mWillChangeProcess(false),
+ mIsNavigating(false),
+ mForcedAutodetection(false),
+ mCheckingSessionHistory(false),
+ mNeedToReportActiveAfterLoadingBecomesActive(false) {
+ // If no outer window ID was provided, generate a new one.
+ if (aContentWindowID == 0) {
+ mContentWindowID = nsContentUtils::GenerateWindowId();
+ }
+
+ MOZ_LOG(gDocShellLeakLog, LogLevel::Debug, ("DOCSHELL %p created\n", this));
+
+#ifdef DEBUG
+ mDocShellID = gDocshellIDCounter++;
+ // We're counting the number of |nsDocShells| to help find leaks
+ ++gNumberOfDocShells;
+ MOZ_LOG(gDocShellAndDOMWindowLeakLogging, LogLevel::Info,
+ ("++DOCSHELL %p == %ld [pid = %d] [id = %" PRIu64 "]\n", (void*)this,
+ gNumberOfDocShells, getpid(), mDocShellID));
+#endif
+}
+
+nsDocShell::~nsDocShell() {
+ MOZ_ASSERT(!mObserved);
+
+ // Avoid notifying observers while we're in the dtor.
+ mIsBeingDestroyed = true;
+
+ Destroy();
+
+ if (mContentViewer) {
+ mContentViewer->Close(nullptr);
+ mContentViewer->Destroy();
+ mContentViewer = nullptr;
+ }
+
+ MOZ_LOG(gDocShellLeakLog, LogLevel::Debug, ("DOCSHELL %p destroyed\n", this));
+
+#ifdef DEBUG
+ if (MOZ_LOG_TEST(gDocShellAndDOMWindowLeakLogging, LogLevel::Info)) {
+ nsAutoCString url;
+ if (mLastOpenedURI) {
+ url = mLastOpenedURI->GetSpecOrDefault();
+
+ // Data URLs can be very long, so truncate to avoid flooding the log.
+ const uint32_t maxURLLength = 1000;
+ if (url.Length() > maxURLLength) {
+ url.Truncate(maxURLLength);
+ }
+ }
+
+ // We're counting the number of |nsDocShells| to help find leaks
+ --gNumberOfDocShells;
+ MOZ_LOG(
+ gDocShellAndDOMWindowLeakLogging, LogLevel::Info,
+ ("--DOCSHELL %p == %ld [pid = %d] [id = %" PRIu64 "] [url = %s]\n",
+ (void*)this, gNumberOfDocShells, getpid(), mDocShellID, url.get()));
+ }
+#endif
+}
+
+bool nsDocShell::Initialize() {
+ if (mInitialized) {
+ // We've already been initialized.
+ return true;
+ }
+
+ NS_ASSERTION(mItemType == typeContent || mItemType == typeChrome,
+ "Unexpected item type in docshell");
+
+ NS_ENSURE_TRUE(Preferences::GetRootBranch(), false);
+ mInitialized = true;
+
+ mDisableMetaRefreshWhenInactive =
+ Preferences::GetBool("browser.meta_refresh_when_inactive.disabled",
+ mDisableMetaRefreshWhenInactive);
+
+ if (nsCOMPtr<nsIObserverService> serv = services::GetObserverService()) {
+ const char* msg = mItemType == typeContent ? NS_WEBNAVIGATION_CREATE
+ : NS_CHROME_WEBNAVIGATION_CREATE;
+ serv->NotifyWhenScriptSafe(GetAsSupports(this), msg, nullptr);
+ }
+
+ return true;
+}
+
+/* static */
+already_AddRefed<nsDocShell> nsDocShell::Create(
+ BrowsingContext* aBrowsingContext, uint64_t aContentWindowID) {
+ MOZ_ASSERT(aBrowsingContext, "DocShell without a BrowsingContext!");
+
+ nsresult rv;
+ RefPtr<nsDocShell> ds = new nsDocShell(aBrowsingContext, aContentWindowID);
+
+ // Initialize the underlying nsDocLoader.
+ rv = ds->nsDocLoader::InitWithBrowsingContext(aBrowsingContext);
+ if (NS_WARN_IF(NS_FAILED(rv))) {
+ return nullptr;
+ }
+
+ // Create our ContentListener
+ ds->mContentListener = new nsDSURIContentListener(ds);
+
+ // We enable if we're in the parent process in order to support non-e10s
+ // configurations.
+ // Note: This check is duplicated in SharedWorkerInterfaceRequestor's
+ // constructor.
+ if (XRE_IsParentProcess()) {
+ ds->mInterceptController = new ServiceWorkerInterceptController();
+ }
+
+ // We want to hold a strong ref to the loadgroup, so it better hold a weak
+ // ref to us... use an InterfaceRequestorProxy to do this.
+ nsCOMPtr<nsIInterfaceRequestor> proxy = new InterfaceRequestorProxy(ds);
+ ds->mLoadGroup->SetNotificationCallbacks(proxy);
+
+ // XXX(nika): We have our BrowsingContext, so we might be able to skip this.
+ // It could be nice to directly set up our DocLoader tree?
+ rv = nsDocLoader::AddDocLoaderAsChildOfRoot(ds);
+ if (NS_WARN_IF(NS_FAILED(rv))) {
+ return nullptr;
+ }
+
+ // Add |ds| as a progress listener to itself. A little weird, but simpler
+ // than reproducing all the listener-notification logic in overrides of the
+ // various methods via which nsDocLoader can be notified. Note that this
+ // holds an nsWeakPtr to |ds|, so it's ok.
+ rv = ds->AddProgressListener(ds, nsIWebProgress::NOTIFY_STATE_DOCUMENT |
+ nsIWebProgress::NOTIFY_STATE_NETWORK |
+ nsIWebProgress::NOTIFY_LOCATION);
+ if (NS_WARN_IF(NS_FAILED(rv))) {
+ return nullptr;
+ }
+
+ // If our BrowsingContext has private browsing enabled, update the number of
+ // private browsing docshells.
+ if (aBrowsingContext->UsePrivateBrowsing()) {
+ ds->NotifyPrivateBrowsingChanged();
+ }
+
+ // If our parent window is present in this process, set up our parent now.
+ RefPtr<WindowContext> parentWC = aBrowsingContext->GetParentWindowContext();
+ if (parentWC && parentWC->IsInProcess()) {
+ // If we don't have a parent element anymore, we can't finish this load!
+ // How'd we get here?
+ RefPtr<Element> parentElement = aBrowsingContext->GetEmbedderElement();
+ if (!parentElement) {
+ MOZ_ASSERT_UNREACHABLE("nsDocShell::Create() - !parentElement");
+ return nullptr;
+ }
+
+ // We have an in-process parent window, but don't have a parent nsDocShell?
+ // How'd we get here!
+ nsCOMPtr<nsIDocShell> parentShell =
+ parentElement->OwnerDoc()->GetDocShell();
+ if (!parentShell) {
+ MOZ_ASSERT_UNREACHABLE("nsDocShell::Create() - !parentShell");
+ return nullptr;
+ }
+ parentShell->AddChild(ds);
+ }
+
+ // Make |ds| the primary DocShell for the given context.
+ aBrowsingContext->SetDocShell(ds);
+
+ // Set |ds| default load flags on load group.
+ ds->SetLoadGroupDefaultLoadFlags(aBrowsingContext->GetDefaultLoadFlags());
+
+ if (XRE_IsParentProcess()) {
+ aBrowsingContext->Canonical()->MaybeAddAsProgressListener(ds);
+ }
+
+ return ds.forget();
+}
+
+void nsDocShell::DestroyChildren() {
+ for (auto* child : mChildList.ForwardRange()) {
+ nsCOMPtr<nsIDocShellTreeItem> shell = do_QueryObject(child);
+ NS_ASSERTION(shell, "docshell has null child");
+
+ if (shell) {
+ shell->SetTreeOwner(nullptr);
+ }
+ }
+
+ nsDocLoader::DestroyChildren();
+}
+
+NS_IMPL_CYCLE_COLLECTION_WEAK_PTR_INHERITED(nsDocShell, nsDocLoader,
+ mScriptGlobal, mInitialClientSource,
+ mBrowsingContext,
+ mChromeEventHandler)
+
+NS_IMPL_ADDREF_INHERITED(nsDocShell, nsDocLoader)
+NS_IMPL_RELEASE_INHERITED(nsDocShell, nsDocLoader)
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsDocShell)
+ NS_INTERFACE_MAP_ENTRY(nsIDocShell)
+ NS_INTERFACE_MAP_ENTRY(nsIDocShellTreeItem)
+ NS_INTERFACE_MAP_ENTRY(nsIWebNavigation)
+ NS_INTERFACE_MAP_ENTRY(nsIBaseWindow)
+ NS_INTERFACE_MAP_ENTRY(nsIRefreshURI)
+ NS_INTERFACE_MAP_ENTRY(nsIWebProgressListener)
+ NS_INTERFACE_MAP_ENTRY(nsISupportsWeakReference)
+ NS_INTERFACE_MAP_ENTRY(nsIWebPageDescriptor)
+ NS_INTERFACE_MAP_ENTRY(nsIAuthPromptProvider)
+ NS_INTERFACE_MAP_ENTRY(nsILoadContext)
+ NS_INTERFACE_MAP_ENTRY_CONDITIONAL(nsINetworkInterceptController,
+ mInterceptController)
+NS_INTERFACE_MAP_END_INHERITING(nsDocLoader)
+
+NS_IMETHODIMP
+nsDocShell::GetInterface(const nsIID& aIID, void** aSink) {
+ MOZ_ASSERT(aSink, "null out param");
+
+ *aSink = nullptr;
+
+ if (aIID.Equals(NS_GET_IID(nsICommandManager))) {
+ NS_ENSURE_SUCCESS(EnsureCommandHandler(), NS_ERROR_FAILURE);
+ *aSink = static_cast<nsICommandManager*>(mCommandManager.get());
+ } else if (aIID.Equals(NS_GET_IID(nsIURIContentListener))) {
+ *aSink = mContentListener;
+ } else if ((aIID.Equals(NS_GET_IID(nsIScriptGlobalObject)) ||
+ aIID.Equals(NS_GET_IID(nsIGlobalObject)) ||
+ aIID.Equals(NS_GET_IID(nsPIDOMWindowOuter)) ||
+ aIID.Equals(NS_GET_IID(mozIDOMWindowProxy)) ||
+ aIID.Equals(NS_GET_IID(nsIDOMWindow))) &&
+ NS_SUCCEEDED(EnsureScriptEnvironment())) {
+ return mScriptGlobal->QueryInterface(aIID, aSink);
+ } else if (aIID.Equals(NS_GET_IID(Document)) &&
+ NS_SUCCEEDED(EnsureContentViewer())) {
+ RefPtr<Document> doc = mContentViewer->GetDocument();
+ doc.forget(aSink);
+ return *aSink ? NS_OK : NS_NOINTERFACE;
+ } else if (aIID.Equals(NS_GET_IID(nsIPrompt)) &&
+ NS_SUCCEEDED(EnsureScriptEnvironment())) {
+ nsresult rv;
+ nsCOMPtr<nsIWindowWatcher> wwatch =
+ do_GetService(NS_WINDOWWATCHER_CONTRACTID, &rv);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ // Get the an auth prompter for our window so that the parenting
+ // of the dialogs works as it should when using tabs.
+ nsIPrompt* prompt;
+ rv = wwatch->GetNewPrompter(mScriptGlobal, &prompt);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ *aSink = prompt;
+ return NS_OK;
+ } else if (aIID.Equals(NS_GET_IID(nsIAuthPrompt)) ||
+ aIID.Equals(NS_GET_IID(nsIAuthPrompt2))) {
+ return NS_SUCCEEDED(GetAuthPrompt(PROMPT_NORMAL, aIID, aSink))
+ ? NS_OK
+ : NS_NOINTERFACE;
+ } else if (aIID.Equals(NS_GET_IID(nsISHistory))) {
+ // This is deprecated, you should instead directly get
+ // ChildSHistory from the browsing context.
+ MOZ_DIAGNOSTIC_ASSERT(
+ false, "Do not try to get a nsISHistory interface from nsIDocShell");
+ return NS_NOINTERFACE;
+ } else if (aIID.Equals(NS_GET_IID(nsIWebBrowserFind))) {
+ nsresult rv = EnsureFind();
+ if (NS_FAILED(rv)) {
+ return rv;
+ }
+
+ *aSink = mFind;
+ NS_ADDREF((nsISupports*)*aSink);
+ return NS_OK;
+ } else if (aIID.Equals(NS_GET_IID(nsISelectionDisplay))) {
+ if (PresShell* presShell = GetPresShell()) {
+ return presShell->QueryInterface(aIID, aSink);
+ }
+ } else if (aIID.Equals(NS_GET_IID(nsIDocShellTreeOwner))) {
+ nsCOMPtr<nsIDocShellTreeOwner> treeOwner;
+ nsresult rv = GetTreeOwner(getter_AddRefs(treeOwner));
+ if (NS_SUCCEEDED(rv) && treeOwner) {
+ return treeOwner->QueryInterface(aIID, aSink);
+ }
+ } else if (aIID.Equals(NS_GET_IID(nsIBrowserChild))) {
+ *aSink = GetBrowserChild().take();
+ return *aSink ? NS_OK : NS_ERROR_FAILURE;
+ } else {
+ return nsDocLoader::GetInterface(aIID, aSink);
+ }
+
+ NS_IF_ADDREF(((nsISupports*)*aSink));
+ return *aSink ? NS_OK : NS_NOINTERFACE;
+}
+
+NS_IMETHODIMP
+nsDocShell::SetCancelContentJSEpoch(int32_t aEpoch) {
+ // Note: this gets called fairly early (before a pageload actually starts).
+ // We could probably defer this even longer.
+ nsCOMPtr<nsIBrowserChild> browserChild = GetBrowserChild();
+ static_cast<BrowserChild*>(browserChild.get())
+ ->SetCancelContentJSEpoch(aEpoch);
+ return NS_OK;
+}
+
+nsresult nsDocShell::CheckDisallowedJavascriptLoad(
+ nsDocShellLoadState* aLoadState) {
+ if (!net::SchemeIsJavascript(aLoadState->URI())) {
+ return NS_OK;
+ }
+
+ if (nsCOMPtr<nsIPrincipal> targetPrincipal =
+ GetInheritedPrincipal(/* aConsiderCurrentDocument */ true)) {
+ if (!aLoadState->TriggeringPrincipal()->Subsumes(targetPrincipal)) {
+ return NS_ERROR_DOM_BAD_CROSS_ORIGIN_URI;
+ }
+ return NS_OK;
+ }
+ return NS_ERROR_DOM_BAD_CROSS_ORIGIN_URI;
+}
+
+NS_IMETHODIMP
+nsDocShell::LoadURI(nsDocShellLoadState* aLoadState, bool aSetNavigating) {
+ return LoadURI(aLoadState, aSetNavigating, false);
+}
+
+nsresult nsDocShell::LoadURI(nsDocShellLoadState* aLoadState,
+ bool aSetNavigating,
+ bool aContinueHandlingSubframeHistory) {
+ MOZ_ASSERT(aLoadState, "Must have a valid load state!");
+ // NOTE: This comparison between what appears to be internal/external load
+ // flags is intentional, as it's ensuring that the caller isn't using any of
+ // the flags reserved for implementations by the `nsIWebNavigation` interface.
+ // In the future, this check may be dropped.
+ MOZ_ASSERT(
+ (aLoadState->LoadFlags() & INTERNAL_LOAD_FLAGS_LOADURI_SETUP_FLAGS) == 0,
+ "Should not have these flags set");
+ MOZ_ASSERT(aLoadState->TargetBrowsingContext().IsNull(),
+ "Targeting doesn't occur until InternalLoad");
+
+ if (!aLoadState->TriggeringPrincipal()) {
+ MOZ_ASSERT(false, "LoadURI must have a triggering principal");
+ return NS_ERROR_FAILURE;
+ }
+
+ MOZ_TRY(CheckDisallowedJavascriptLoad(aLoadState));
+
+ bool oldIsNavigating = mIsNavigating;
+ auto cleanupIsNavigating =
+ MakeScopeExit([&]() { mIsNavigating = oldIsNavigating; });
+ if (aSetNavigating) {
+ mIsNavigating = true;
+ }
+
+ PopupBlocker::PopupControlState popupState = PopupBlocker::openOverridden;
+ if (aLoadState->HasLoadFlags(LOAD_FLAGS_ALLOW_POPUPS)) {
+ popupState = PopupBlocker::openAllowed;
+ // If we allow popups as part of the navigation, ensure we fake a user
+ // interaction, so that popups can, in fact, be allowed to open.
+ if (WindowContext* wc = mBrowsingContext->GetCurrentWindowContext()) {
+ wc->NotifyUserGestureActivation();
+ }
+ }
+
+ AutoPopupStatePusher statePusher(popupState);
+
+ if (aLoadState->GetCancelContentJSEpoch().isSome()) {
+ SetCancelContentJSEpoch(*aLoadState->GetCancelContentJSEpoch());
+ }
+
+ // Note: we allow loads to get through here even if mFiredUnloadEvent is
+ // true; that case will get handled in LoadInternal or LoadHistoryEntry,
+ // so we pass false as the second parameter to IsNavigationAllowed.
+ // However, we don't allow the page to change location *in the middle of*
+ // firing beforeunload, so we do need to check if *beforeunload* is currently
+ // firing, so we call IsNavigationAllowed rather than just IsPrintingOrPP.
+ if (!IsNavigationAllowed(true, false)) {
+ return NS_OK; // JS may not handle returning of an error code
+ }
+
+ nsLoadFlags defaultLoadFlags = mBrowsingContext->GetDefaultLoadFlags();
+ if (aLoadState->HasLoadFlags(LOAD_FLAGS_FORCE_TRR)) {
+ defaultLoadFlags |= nsIRequest::LOAD_TRR_ONLY_MODE;
+ } else if (aLoadState->HasLoadFlags(LOAD_FLAGS_DISABLE_TRR)) {
+ defaultLoadFlags |= nsIRequest::LOAD_TRR_DISABLED_MODE;
+ }
+
+ MOZ_ALWAYS_SUCCEEDS(mBrowsingContext->SetDefaultLoadFlags(defaultLoadFlags));
+
+ if (!StartupTimeline::HasRecord(StartupTimeline::FIRST_LOAD_URI) &&
+ mItemType == typeContent && !NS_IsAboutBlank(aLoadState->URI())) {
+ StartupTimeline::RecordOnce(StartupTimeline::FIRST_LOAD_URI);
+ }
+
+ // LoadType used to be set to a default value here, if no LoadInfo/LoadState
+ // object was passed in. That functionality has been removed as of bug
+ // 1492648. LoadType should now be set up by the caller at the time they
+ // create their nsDocShellLoadState object to pass into LoadURI.
+
+ MOZ_LOG(
+ gDocShellLeakLog, LogLevel::Debug,
+ ("nsDocShell[%p]: loading %s with flags 0x%08x", this,
+ aLoadState->URI()->GetSpecOrDefault().get(), aLoadState->LoadFlags()));
+
+ if ((!aLoadState->LoadIsFromSessionHistory() &&
+ !LOAD_TYPE_HAS_FLAGS(aLoadState->LoadType(),
+ LOAD_FLAGS_REPLACE_HISTORY)) ||
+ aContinueHandlingSubframeHistory) {
+ // This is possibly a subframe, so handle it accordingly.
+ //
+ // If history exists, it will be loaded into the aLoadState object, and the
+ // LoadType will be changed.
+ if (MaybeHandleSubframeHistory(aLoadState,
+ aContinueHandlingSubframeHistory)) {
+ // MaybeHandleSubframeHistory returns true if we need to continue loading
+ // asynchronously.
+ return NS_OK;
+ }
+ }
+
+ if (aLoadState->LoadIsFromSessionHistory()) {
+ MOZ_LOG(gSHLog, LogLevel::Debug,
+ ("nsDocShell[%p]: loading from session history", this));
+
+ if (!mozilla::SessionHistoryInParent()) {
+ nsCOMPtr<nsISHEntry> entry = aLoadState->SHEntry();
+ return LoadHistoryEntry(entry, aLoadState->LoadType(),
+ aLoadState->HasValidUserGestureActivation());
+ }
+
+ // FIXME Null check aLoadState->GetLoadingSessionHistoryInfo()?
+ return LoadHistoryEntry(*aLoadState->GetLoadingSessionHistoryInfo(),
+ aLoadState->LoadType(),
+ aLoadState->HasValidUserGestureActivation());
+ }
+
+ // On history navigation via Back/Forward buttons, don't execute
+ // automatic JavaScript redirection such as |location.href = ...| or
+ // |window.open()|
+ //
+ // LOAD_NORMAL: window.open(...) etc.
+ // LOAD_STOP_CONTENT: location.href = ..., location.assign(...)
+ if ((aLoadState->LoadType() == LOAD_NORMAL ||
+ aLoadState->LoadType() == LOAD_STOP_CONTENT) &&
+ ShouldBlockLoadingForBackButton()) {
+ return NS_OK;
+ }
+
+ BrowsingContext::Type bcType = mBrowsingContext->GetType();
+
+ // Set up the inheriting principal in LoadState.
+ nsresult rv = aLoadState->SetupInheritingPrincipal(
+ bcType, mBrowsingContext->OriginAttributesRef());
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ rv = aLoadState->SetupTriggeringPrincipal(
+ mBrowsingContext->OriginAttributesRef());
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ aLoadState->CalculateLoadURIFlags();
+
+ MOZ_ASSERT(aLoadState->TypeHint().IsVoid(),
+ "Typehint should be null when calling InternalLoad from LoadURI");
+ MOZ_ASSERT(aLoadState->FileName().IsVoid(),
+ "FileName should be null when calling InternalLoad from LoadURI");
+ MOZ_ASSERT(!aLoadState->LoadIsFromSessionHistory(),
+ "Shouldn't be loading from an entry when calling InternalLoad "
+ "from LoadURI");
+
+ // If we have a system triggering principal, we can assume that this load was
+ // triggered by some UI in the browser chrome, such as the URL bar or
+ // bookmark bar. This should count as a user interaction for the current sh
+ // entry, so that the user may navigate back to the current entry, from the
+ // entry that is going to be added as part of this load.
+ nsCOMPtr<nsIPrincipal> triggeringPrincipal =
+ aLoadState->TriggeringPrincipal();
+ if (triggeringPrincipal && triggeringPrincipal->IsSystemPrincipal()) {
+ if (mozilla::SessionHistoryInParent()) {
+ WindowContext* topWc = mBrowsingContext->GetTopWindowContext();
+ if (topWc && !topWc->IsDiscarded()) {
+ MOZ_ALWAYS_SUCCEEDS(topWc->SetSHEntryHasUserInteraction(true));
+ }
+ } else {
+ bool oshe = false;
+ nsCOMPtr<nsISHEntry> currentSHEntry;
+ GetCurrentSHEntry(getter_AddRefs(currentSHEntry), &oshe);
+ if (currentSHEntry) {
+ currentSHEntry->SetHasUserInteraction(true);
+ }
+ }
+ }
+
+ rv = InternalLoad(aLoadState);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ if (aLoadState->GetOriginalURIString().isSome()) {
+ // Save URI string in case it's needed later when
+ // sending to search engine service in EndPageLoad()
+ mOriginalUriString = *aLoadState->GetOriginalURIString();
+ }
+
+ return NS_OK;
+}
+
+bool nsDocShell::IsLoadingFromSessionHistory() {
+ return mActiveEntryIsLoadingFromSessionHistory;
+}
+
+// StopDetector is modeled similarly to OnloadBlocker; it is a rather
+// dummy nsIRequest implementation which can be added to an nsILoadGroup to
+// detect Cancel calls.
+class StopDetector final : public nsIRequest {
+ public:
+ StopDetector() = default;
+
+ NS_DECL_ISUPPORTS
+ NS_DECL_NSIREQUEST
+
+ bool Canceled() { return mCanceled; }
+
+ private:
+ ~StopDetector() = default;
+
+ bool mCanceled = false;
+};
+
+NS_IMPL_ISUPPORTS(StopDetector, nsIRequest)
+
+NS_IMETHODIMP
+StopDetector::GetName(nsACString& aResult) {
+ aResult.AssignLiteral("about:stop-detector");
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+StopDetector::IsPending(bool* aRetVal) {
+ *aRetVal = true;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+StopDetector::GetStatus(nsresult* aStatus) {
+ *aStatus = NS_OK;
+ return NS_OK;
+}
+
+NS_IMETHODIMP StopDetector::SetCanceledReason(const nsACString& aReason) {
+ return SetCanceledReasonImpl(aReason);
+}
+
+NS_IMETHODIMP StopDetector::GetCanceledReason(nsACString& aReason) {
+ return GetCanceledReasonImpl(aReason);
+}
+
+NS_IMETHODIMP StopDetector::CancelWithReason(nsresult aStatus,
+ const nsACString& aReason) {
+ return CancelWithReasonImpl(aStatus, aReason);
+}
+
+NS_IMETHODIMP
+StopDetector::Cancel(nsresult aStatus) {
+ mCanceled = true;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+StopDetector::Suspend(void) { return NS_OK; }
+NS_IMETHODIMP
+StopDetector::Resume(void) { return NS_OK; }
+
+NS_IMETHODIMP
+StopDetector::GetLoadGroup(nsILoadGroup** aLoadGroup) {
+ *aLoadGroup = nullptr;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+StopDetector::SetLoadGroup(nsILoadGroup* aLoadGroup) { return NS_OK; }
+
+NS_IMETHODIMP
+StopDetector::GetLoadFlags(nsLoadFlags* aLoadFlags) {
+ *aLoadFlags = nsIRequest::LOAD_NORMAL;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+StopDetector::GetTRRMode(nsIRequest::TRRMode* aTRRMode) {
+ return GetTRRModeImpl(aTRRMode);
+}
+
+NS_IMETHODIMP
+StopDetector::SetTRRMode(nsIRequest::TRRMode aTRRMode) {
+ return SetTRRModeImpl(aTRRMode);
+}
+
+NS_IMETHODIMP
+StopDetector::SetLoadFlags(nsLoadFlags aLoadFlags) { return NS_OK; }
+
+bool nsDocShell::MaybeHandleSubframeHistory(
+ nsDocShellLoadState* aLoadState, bool aContinueHandlingSubframeHistory) {
+ // First, verify if this is a subframe.
+ // Note, it is ok to rely on docshell here and not browsing context since when
+ // an iframe is created, it has first in-process docshell.
+ nsCOMPtr<nsIDocShellTreeItem> parentAsItem;
+ GetInProcessSameTypeParent(getter_AddRefs(parentAsItem));
+ nsCOMPtr<nsIDocShell> parentDS(do_QueryInterface(parentAsItem));
+
+ if (!parentDS || parentDS == static_cast<nsIDocShell*>(this)) {
+ if (mBrowsingContext && mBrowsingContext->IsTop()) {
+ // This is the root docshell. If we got here while
+ // executing an onLoad Handler,this load will not go
+ // into session history.
+ // XXX Why is this code in a method which deals with iframes!
+ bool inOnLoadHandler = false;
+ GetIsExecutingOnLoadHandler(&inOnLoadHandler);
+ if (inOnLoadHandler) {
+ aLoadState->SetLoadType(LOAD_NORMAL_REPLACE);
+ }
+ }
+ return false;
+ }
+
+ /* OK. It is a subframe. Checkout the parent's loadtype. If the parent was
+ * loaded through a history mechanism, then get the SH entry for the child
+ * from the parent. This is done to restore frameset navigation while going
+ * back/forward. If the parent was loaded through any other loadType, set the
+ * child's loadType too accordingly, so that session history does not get
+ * confused.
+ */
+
+ // Get the parent's load type
+ uint32_t parentLoadType;
+ parentDS->GetLoadType(&parentLoadType);
+
+ if (!aContinueHandlingSubframeHistory) {
+ if (mozilla::SessionHistoryInParent()) {
+ if (nsDocShell::Cast(parentDS.get())->IsLoadingFromSessionHistory() &&
+ !GetCreatedDynamically()) {
+ if (XRE_IsContentProcess()) {
+ dom::ContentChild* contentChild = dom::ContentChild::GetSingleton();
+ nsCOMPtr<nsILoadGroup> loadGroup;
+ GetLoadGroup(getter_AddRefs(loadGroup));
+ if (contentChild && loadGroup && !mCheckingSessionHistory) {
+ RefPtr<Document> parentDoc = parentDS->GetDocument();
+ parentDoc->BlockOnload();
+ RefPtr<BrowsingContext> browsingContext = mBrowsingContext;
+ Maybe<uint64_t> currentLoadIdentifier =
+ mBrowsingContext->GetCurrentLoadIdentifier();
+ RefPtr<nsDocShellLoadState> loadState = aLoadState;
+ bool isNavigating = mIsNavigating;
+ RefPtr<StopDetector> stopDetector = new StopDetector();
+ loadGroup->AddRequest(stopDetector, nullptr);
+ // Need to set mCheckingSessionHistory so that
+ // GetIsAttemptingToNavigate() returns true.
+ mCheckingSessionHistory = true;
+
+ auto resolve =
+ [currentLoadIdentifier, browsingContext, parentDoc, loadState,
+ isNavigating, loadGroup, stopDetector](
+ mozilla::Maybe<LoadingSessionHistoryInfo>&& aResult) {
+ RefPtr<nsDocShell> docShell =
+ static_cast<nsDocShell*>(browsingContext->GetDocShell());
+ auto unblockParent = MakeScopeExit(
+ [loadGroup, stopDetector, parentDoc, docShell]() {
+ if (docShell) {
+ docShell->mCheckingSessionHistory = false;
+ }
+ loadGroup->RemoveRequest(stopDetector, nullptr, NS_OK);
+ parentDoc->UnblockOnload(false);
+ });
+
+ if (!docShell || !docShell->mCheckingSessionHistory) {
+ return;
+ }
+
+ if (stopDetector->Canceled()) {
+ return;
+ }
+ if (currentLoadIdentifier ==
+ browsingContext->GetCurrentLoadIdentifier() &&
+ aResult.isSome()) {
+ loadState->SetLoadingSessionHistoryInfo(aResult.value());
+ // This is an initial subframe load from the session
+ // history, index doesn't need to be updated.
+ loadState->SetLoadIsFromSessionHistory(0, false);
+ }
+
+ // We got the results back from the parent process, call
+ // LoadURI again with the possibly updated data.
+ docShell->LoadURI(loadState, isNavigating, true);
+ };
+ auto reject = [loadGroup, stopDetector, browsingContext,
+ parentDoc](mozilla::ipc::ResponseRejectReason) {
+ RefPtr<nsDocShell> docShell =
+ static_cast<nsDocShell*>(browsingContext->GetDocShell());
+ if (docShell) {
+ docShell->mCheckingSessionHistory = false;
+ }
+ // In practise reject shouldn't be called ever.
+ loadGroup->RemoveRequest(stopDetector, nullptr, NS_OK);
+ parentDoc->UnblockOnload(false);
+ };
+ contentChild->SendGetLoadingSessionHistoryInfoFromParent(
+ mBrowsingContext, std::move(resolve), std::move(reject));
+ return true;
+ }
+ } else {
+ Maybe<LoadingSessionHistoryInfo> info;
+ mBrowsingContext->Canonical()->GetLoadingSessionHistoryInfoFromParent(
+ info);
+ if (info.isSome()) {
+ aLoadState->SetLoadingSessionHistoryInfo(info.value());
+ // This is an initial subframe load from the session
+ // history, index doesn't need to be updated.
+ aLoadState->SetLoadIsFromSessionHistory(0, false);
+ }
+ }
+ }
+ } else {
+ // Get the ShEntry for the child from the parent
+ nsCOMPtr<nsISHEntry> currentSH;
+ bool oshe = false;
+ parentDS->GetCurrentSHEntry(getter_AddRefs(currentSH), &oshe);
+ bool dynamicallyAddedChild = GetCreatedDynamically();
+
+ if (!dynamicallyAddedChild && !oshe && currentSH) {
+ // Only use the old SHEntry, if we're sure enough that
+ // it wasn't originally for some other frame.
+ nsCOMPtr<nsISHEntry> shEntry;
+ currentSH->GetChildSHEntryIfHasNoDynamicallyAddedChild(
+ mBrowsingContext->ChildOffset(), getter_AddRefs(shEntry));
+ if (shEntry) {
+ aLoadState->SetSHEntry(shEntry);
+ }
+ }
+ }
+ }
+
+ // Make some decisions on the child frame's loadType based on the
+ // parent's loadType, if the subframe hasn't loaded anything into it.
+ //
+ // In some cases privileged scripts may try to get the DOMWindow
+ // reference of this docshell before the loading starts, causing the
+ // initial about:blank content viewer being created and mCurrentURI being
+ // set. To handle this case we check if mCurrentURI is about:blank and
+ // currentSHEntry is null.
+ bool oshe = false;
+ nsCOMPtr<nsISHEntry> currentChildEntry;
+ GetCurrentSHEntry(getter_AddRefs(currentChildEntry), &oshe);
+
+ if (mCurrentURI && (!NS_IsAboutBlank(mCurrentURI) || currentChildEntry ||
+ mLoadingEntry || mActiveEntry)) {
+ // This is a pre-existing subframe. If
+ // 1. The load of this frame was not originally initiated by session
+ // history directly (i.e. (!shEntry) condition succeeded, but it can
+ // still be a history load on parent which causes this frame being
+ // loaded), which we checked with the above assert, and
+ // 2. mCurrentURI is not null, nor the initial about:blank,
+ // it is possible that a parent's onLoadHandler or even self's
+ // onLoadHandler is loading a new page in this child. Check parent's and
+ // self's busy flag and if it is set, we don't want this onLoadHandler
+ // load to get in to session history.
+ BusyFlags parentBusy = parentDS->GetBusyFlags();
+ BusyFlags selfBusy = GetBusyFlags();
+
+ if (parentBusy & BUSY_FLAGS_BUSY || selfBusy & BUSY_FLAGS_BUSY) {
+ aLoadState->SetLoadType(LOAD_NORMAL_REPLACE);
+ aLoadState->ClearLoadIsFromSessionHistory();
+ }
+ return false;
+ }
+
+ // This is a newly created frame. Check for exception cases first.
+ // By default the subframe will inherit the parent's loadType.
+ if (aLoadState->LoadIsFromSessionHistory() &&
+ (parentLoadType == LOAD_NORMAL || parentLoadType == LOAD_LINK)) {
+ // The parent was loaded normally. In this case, this *brand new*
+ // child really shouldn't have a SHEntry. If it does, it could be
+ // because the parent is replacing an existing frame with a new frame,
+ // in the onLoadHandler. We don't want this url to get into session
+ // history. Clear off shEntry, and set load type to
+ // LOAD_BYPASS_HISTORY.
+ bool inOnLoadHandler = false;
+ parentDS->GetIsExecutingOnLoadHandler(&inOnLoadHandler);
+ if (inOnLoadHandler) {
+ aLoadState->SetLoadType(LOAD_NORMAL_REPLACE);
+ aLoadState->ClearLoadIsFromSessionHistory();
+ }
+ } else if (parentLoadType == LOAD_REFRESH) {
+ // Clear shEntry. For refresh loads, we have to load
+ // what comes through the pipe, not what's in history.
+ aLoadState->ClearLoadIsFromSessionHistory();
+ } else if ((parentLoadType == LOAD_BYPASS_HISTORY) ||
+ (aLoadState->LoadIsFromSessionHistory() &&
+ ((parentLoadType & LOAD_CMD_HISTORY) ||
+ (parentLoadType == LOAD_RELOAD_NORMAL) ||
+ (parentLoadType == LOAD_RELOAD_CHARSET_CHANGE) ||
+ (parentLoadType == LOAD_RELOAD_CHARSET_CHANGE_BYPASS_CACHE) ||
+ (parentLoadType ==
+ LOAD_RELOAD_CHARSET_CHANGE_BYPASS_PROXY_AND_CACHE)))) {
+ // If the parent url, bypassed history or was loaded from
+ // history, pass on the parent's loadType to the new child
+ // frame too, so that the child frame will also
+ // avoid getting into history.
+ aLoadState->SetLoadType(parentLoadType);
+ } else if (parentLoadType == LOAD_ERROR_PAGE) {
+ // If the parent document is an error page, we don't
+ // want to update global/session history. However,
+ // this child frame is not an error page.
+ aLoadState->SetLoadType(LOAD_BYPASS_HISTORY);
+ } else if ((parentLoadType == LOAD_RELOAD_BYPASS_CACHE) ||
+ (parentLoadType == LOAD_RELOAD_BYPASS_PROXY) ||
+ (parentLoadType == LOAD_RELOAD_BYPASS_PROXY_AND_CACHE)) {
+ // the new frame should inherit the parent's load type so that it also
+ // bypasses the cache and/or proxy
+ aLoadState->SetLoadType(parentLoadType);
+ }
+
+ return false;
+}
+
+/*
+ * Reset state to a new content model within the current document and the
+ * document viewer. Called by the document before initiating an out of band
+ * document.write().
+ */
+NS_IMETHODIMP
+nsDocShell::PrepareForNewContentModel() {
+ // Clear out our form control state, because the state of controls
+ // in the pre-open() document should not affect the state of
+ // controls that are now going to be written.
+ SetLayoutHistoryState(nullptr);
+ mEODForCurrentDocument = false;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::FirePageHideNotification(bool aIsUnload) {
+ FirePageHideNotificationInternal(aIsUnload, false);
+ return NS_OK;
+}
+
+void nsDocShell::FirePageHideNotificationInternal(
+ bool aIsUnload, bool aSkipCheckingDynEntries) {
+ if (mContentViewer && !mFiredUnloadEvent) {
+ // Keep an explicit reference since calling PageHide could release
+ // mContentViewer
+ nsCOMPtr<nsIContentViewer> contentViewer(mContentViewer);
+ mFiredUnloadEvent = true;
+
+ if (mTiming) {
+ mTiming->NotifyUnloadEventStart();
+ }
+
+ contentViewer->PageHide(aIsUnload);
+
+ if (mTiming) {
+ mTiming->NotifyUnloadEventEnd();
+ }
+
+ AutoTArray<nsCOMPtr<nsIDocShell>, 8> kids;
+ uint32_t n = mChildList.Length();
+ kids.SetCapacity(n);
+ for (uint32_t i = 0; i < n; i++) {
+ kids.AppendElement(do_QueryInterface(ChildAt(i)));
+ }
+
+ n = kids.Length();
+ for (uint32_t i = 0; i < n; ++i) {
+ RefPtr<nsDocShell> child = static_cast<nsDocShell*>(kids[i].get());
+ if (child) {
+ // Skip checking dynamic subframe entries in our children.
+ child->FirePageHideNotificationInternal(aIsUnload, true);
+ }
+ }
+
+ // If the document is unloading, remove all dynamic subframe entries.
+ if (aIsUnload && !aSkipCheckingDynEntries) {
+ RefPtr<ChildSHistory> rootSH = GetRootSessionHistory();
+ if (rootSH) {
+ MOZ_LOG(
+ gSHLog, LogLevel::Debug,
+ ("nsDocShell %p unloading, remove dynamic subframe entries", this));
+ if (mozilla::SessionHistoryInParent()) {
+ if (mActiveEntry) {
+ mBrowsingContext->RemoveDynEntriesFromActiveSessionHistoryEntry();
+ }
+ MOZ_LOG(gSHLog, LogLevel::Debug,
+ ("nsDocShell %p unloading, no active entries", this));
+ } else if (mOSHE) {
+ int32_t index = rootSH->Index();
+ rootSH->LegacySHistory()->RemoveDynEntries(index, mOSHE);
+ }
+ }
+ }
+
+ // Now make sure our editor, if any, is detached before we go
+ // any farther.
+ DetachEditorFromWindow();
+ }
+}
+
+void nsDocShell::ThawFreezeNonRecursive(bool aThaw) {
+ MOZ_ASSERT(mozilla::BFCacheInParent());
+
+ if (!mScriptGlobal) {
+ return;
+ }
+
+ RefPtr<nsGlobalWindowInner> inner =
+ mScriptGlobal->GetCurrentInnerWindowInternal();
+ if (inner) {
+ if (aThaw) {
+ inner->Thaw(false);
+ } else {
+ inner->Freeze(false);
+ }
+ }
+}
+
+void nsDocShell::FirePageHideShowNonRecursive(bool aShow) {
+ MOZ_ASSERT(mozilla::BFCacheInParent());
+
+ if (!mContentViewer) {
+ return;
+ }
+
+ // Emulate what non-SHIP BFCache does too. In pageshow case
+ // add and remove a request and before that call SetCurrentURI to get
+ // the location change notification.
+ // For pagehide, set mFiredUnloadEvent to true, so that unload doesn't fire.
+ nsCOMPtr<nsIContentViewer> contentViewer(mContentViewer);
+ if (aShow) {
+ contentViewer->SetIsHidden(false);
+ mRefreshURIList = std::move(mBFCachedRefreshURIList);
+ RefreshURIFromQueue();
+ mFiredUnloadEvent = false;
+ RefPtr<Document> doc = contentViewer->GetDocument();
+ if (doc) {
+ doc->NotifyActivityChanged();
+ RefPtr<nsGlobalWindowInner> inner =
+ mScriptGlobal ? mScriptGlobal->GetCurrentInnerWindowInternal()
+ : nullptr;
+ if (mBrowsingContext->IsTop()) {
+ doc->NotifyPossibleTitleChange(false);
+ doc->SetLoadingOrRestoredFromBFCacheTimeStampToNow();
+ if (inner) {
+ // Now that we have found the inner window of the page restored
+ // from the history, we have to make sure that
+ // performance.navigation.type is 2.
+ // Traditionally this type change has been done to the top level page
+ // only.
+ Performance* performance = inner->GetPerformance();
+ if (performance) {
+ performance->GetDOMTiming()->NotifyRestoreStart();
+ }
+ }
+ }
+
+ nsCOMPtr<nsIChannel> channel = doc->GetChannel();
+ if (channel) {
+ SetLoadType(LOAD_HISTORY);
+ mEODForCurrentDocument = false;
+ mIsRestoringDocument = true;
+ mLoadGroup->AddRequest(channel, nullptr);
+ SetCurrentURI(doc->GetDocumentURI(), channel,
+ /* aFireOnLocationChange */ true,
+ /* aIsInitialAboutBlank */ false,
+ /* aLocationFlags */ 0);
+ mLoadGroup->RemoveRequest(channel, nullptr, NS_OK);
+ mIsRestoringDocument = false;
+ }
+ RefPtr<PresShell> presShell = GetPresShell();
+ if (presShell) {
+ presShell->Thaw(false);
+ }
+
+ if (inner) {
+ inner->FireDelayedDOMEvents(false);
+ }
+ }
+ } else if (!mFiredUnloadEvent) {
+ // XXXBFCache check again that the page can enter bfcache.
+ // XXXBFCache should mTiming->NotifyUnloadEventStart()/End() be called here?
+
+ if (mRefreshURIList) {
+ RefreshURIToQueue();
+ mBFCachedRefreshURIList = std::move(mRefreshURIList);
+ } else {
+ // If Stop was called, the list was moved to mSavedRefreshURIList after
+ // calling SuspendRefreshURIs, which calls RefreshURIToQueue.
+ mBFCachedRefreshURIList = std::move(mSavedRefreshURIList);
+ }
+
+ mFiredUnloadEvent = true;
+ contentViewer->PageHide(false);
+
+ RefPtr<PresShell> presShell = GetPresShell();
+ if (presShell) {
+ presShell->Freeze(false);
+ }
+ }
+}
+
+nsresult nsDocShell::Dispatch(TaskCategory aCategory,
+ already_AddRefed<nsIRunnable>&& aRunnable) {
+ nsCOMPtr<nsIRunnable> runnable(aRunnable);
+ nsCOMPtr<nsPIDOMWindowOuter> win = GetWindow();
+ if (NS_WARN_IF(!win)) {
+ // Window should only be unavailable after destroyed.
+ MOZ_ASSERT(mIsBeingDestroyed);
+ return NS_ERROR_FAILURE;
+ }
+
+ if (win->GetDocGroup()) {
+ return win->GetDocGroup()->Dispatch(aCategory, runnable.forget());
+ }
+
+ return SchedulerGroup::Dispatch(aCategory, runnable.forget());
+}
+
+NS_IMETHODIMP
+nsDocShell::DispatchLocationChangeEvent() {
+ return Dispatch(
+ TaskCategory::Other,
+ NewRunnableMethod("nsDocShell::FireDummyOnLocationChange", this,
+ &nsDocShell::FireDummyOnLocationChange));
+}
+
+NS_IMETHODIMP
+nsDocShell::StartDelayedAutoplayMediaComponents() {
+ RefPtr<nsPIDOMWindowOuter> outerWindow = GetWindow();
+ if (outerWindow) {
+ outerWindow->ActivateMediaComponents();
+ }
+ return NS_OK;
+}
+
+bool nsDocShell::MaybeInitTiming() {
+ if (mTiming && !mBlankTiming) {
+ return false;
+ }
+
+ bool canBeReset = false;
+
+ if (mScriptGlobal && mBlankTiming) {
+ nsPIDOMWindowInner* innerWin = mScriptGlobal->GetCurrentInnerWindow();
+ if (innerWin && innerWin->GetPerformance()) {
+ mTiming = innerWin->GetPerformance()->GetDOMTiming();
+ mBlankTiming = false;
+ }
+ }
+
+ if (!mTiming) {
+ mTiming = new nsDOMNavigationTiming(this);
+ canBeReset = true;
+ }
+
+ mTiming->NotifyNavigationStart(
+ mBrowsingContext->IsActive()
+ ? nsDOMNavigationTiming::DocShellState::eActive
+ : nsDOMNavigationTiming::DocShellState::eInactive);
+
+ return canBeReset;
+}
+
+void nsDocShell::MaybeResetInitTiming(bool aReset) {
+ if (aReset) {
+ mTiming = nullptr;
+ }
+}
+
+nsDOMNavigationTiming* nsDocShell::GetNavigationTiming() const {
+ return mTiming;
+}
+
+nsPresContext* nsDocShell::GetEldestPresContext() {
+ nsIContentViewer* viewer = mContentViewer;
+ while (viewer) {
+ nsIContentViewer* prevViewer = viewer->GetPreviousViewer();
+ if (!prevViewer) {
+ return viewer->GetPresContext();
+ }
+ viewer = prevViewer;
+ }
+
+ return nullptr;
+}
+
+nsPresContext* nsDocShell::GetPresContext() {
+ if (!mContentViewer) {
+ return nullptr;
+ }
+
+ return mContentViewer->GetPresContext();
+}
+
+PresShell* nsDocShell::GetPresShell() {
+ nsPresContext* presContext = GetPresContext();
+ return presContext ? presContext->GetPresShell() : nullptr;
+}
+
+PresShell* nsDocShell::GetEldestPresShell() {
+ nsPresContext* presContext = GetEldestPresContext();
+
+ if (presContext) {
+ return presContext->GetPresShell();
+ }
+
+ return nullptr;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetContentViewer(nsIContentViewer** aContentViewer) {
+ NS_ENSURE_ARG_POINTER(aContentViewer);
+
+ *aContentViewer = mContentViewer;
+ NS_IF_ADDREF(*aContentViewer);
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetOuterWindowID(uint64_t* aWindowID) {
+ *aWindowID = mContentWindowID;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::SetChromeEventHandler(EventTarget* aChromeEventHandler) {
+ mChromeEventHandler = aChromeEventHandler;
+
+ if (mScriptGlobal) {
+ mScriptGlobal->SetChromeEventHandler(mChromeEventHandler);
+ }
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetChromeEventHandler(EventTarget** aChromeEventHandler) {
+ NS_ENSURE_ARG_POINTER(aChromeEventHandler);
+ RefPtr<EventTarget> handler = mChromeEventHandler;
+ handler.forget(aChromeEventHandler);
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::SetCurrentURIForSessionStore(nsIURI* aURI) {
+ // Note that securityUI will set STATE_IS_INSECURE, even if
+ // the scheme of |aURI| is "https".
+ SetCurrentURI(aURI, nullptr,
+ /* aFireOnLocationChange */
+ true,
+ /* aIsInitialAboutBlank */
+ false,
+ /* aLocationFlags */
+ nsIWebProgressListener::LOCATION_CHANGE_SESSION_STORE);
+ return NS_OK;
+}
+
+bool nsDocShell::SetCurrentURI(nsIURI* aURI, nsIRequest* aRequest,
+ bool aFireOnLocationChange,
+ bool aIsInitialAboutBlank,
+ uint32_t aLocationFlags) {
+ MOZ_ASSERT(!mIsBeingDestroyed);
+
+ MOZ_LOG(gDocShellLeakLog, LogLevel::Debug,
+ ("DOCSHELL %p SetCurrentURI %s\n", this,
+ aURI ? aURI->GetSpecOrDefault().get() : ""));
+
+ // We don't want to send a location change when we're displaying an error
+ // page, and we don't want to change our idea of "current URI" either
+ if (mLoadType == LOAD_ERROR_PAGE) {
+ return false;
+ }
+
+ bool uriIsEqual = false;
+ if (!mCurrentURI || !aURI ||
+ NS_FAILED(mCurrentURI->Equals(aURI, &uriIsEqual)) || !uriIsEqual) {
+ mTitleValidForCurrentURI = false;
+ }
+
+ mCurrentURI = aURI;
+
+#ifdef DEBUG
+ mLastOpenedURI = aURI;
+#endif
+
+ if (!NS_IsAboutBlank(mCurrentURI)) {
+ mHasLoadedNonBlankURI = true;
+ }
+
+ // Don't fire onLocationChange when creating a subframe's initial about:blank
+ // document, as this can happen when it's not safe for us to run script.
+ if (aIsInitialAboutBlank && !mHasLoadedNonBlankURI &&
+ !mBrowsingContext->IsTop()) {
+ MOZ_ASSERT(!aRequest && aLocationFlags == 0);
+ return false;
+ }
+
+ MOZ_ASSERT(nsContentUtils::IsSafeToRunScript());
+
+ if (aFireOnLocationChange) {
+ FireOnLocationChange(this, aRequest, aURI, aLocationFlags);
+ }
+ return !aFireOnLocationChange;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetCharset(nsACString& aCharset) {
+ aCharset.Truncate();
+
+ PresShell* presShell = GetPresShell();
+ NS_ENSURE_TRUE(presShell, NS_ERROR_FAILURE);
+ Document* doc = presShell->GetDocument();
+ NS_ENSURE_TRUE(doc, NS_ERROR_FAILURE);
+ doc->GetDocumentCharacterSet()->Name(aCharset);
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::ForceEncodingDetection() {
+ nsCOMPtr<nsIContentViewer> viewer;
+ GetContentViewer(getter_AddRefs(viewer));
+ if (!viewer) {
+ return NS_OK;
+ }
+
+ Document* doc = viewer->GetDocument();
+ if (!doc || doc->WillIgnoreCharsetOverride()) {
+ return NS_OK;
+ }
+
+ mForcedAutodetection = true;
+
+ nsIURI* url = doc->GetOriginalURI();
+ bool isFileURL = url && SchemeIsFile(url);
+
+ int32_t charsetSource = doc->GetDocumentCharacterSetSource();
+ auto encoding = doc->GetDocumentCharacterSet();
+ // AsHTMLDocument is valid, because we called
+ // WillIgnoreCharsetOverride() above.
+ if (doc->AsHTMLDocument()->IsPlainText()) {
+ switch (charsetSource) {
+ case kCharsetFromInitialAutoDetectionASCII:
+ // Deliberately no final version
+ LOGCHARSETMENU(("TEXT:UnlabeledAscii"));
+ Telemetry::AccumulateCategorical(
+ Telemetry::LABELS_ENCODING_OVERRIDE_SITUATION_TEXT::UnlabeledAscii);
+ break;
+ case kCharsetFromInitialAutoDetectionWouldNotHaveBeenUTF8Generic:
+ case kCharsetFromFinalAutoDetectionWouldNotHaveBeenUTF8Generic:
+ case kCharsetFromFinalAutoDetectionWouldNotHaveBeenUTF8GenericInitialWasASCII:
+ case kCharsetFromInitialAutoDetectionWouldNotHaveBeenUTF8Content:
+ case kCharsetFromFinalAutoDetectionWouldNotHaveBeenUTF8Content:
+ case kCharsetFromFinalAutoDetectionWouldNotHaveBeenUTF8ContentInitialWasASCII:
+ LOGCHARSETMENU(("TEXT:UnlabeledNonUtf8"));
+ Telemetry::AccumulateCategorical(
+ Telemetry::LABELS_ENCODING_OVERRIDE_SITUATION_TEXT::
+ UnlabeledNonUtf8);
+ break;
+ case kCharsetFromInitialAutoDetectionWouldNotHaveBeenUTF8DependedOnTLD:
+ case kCharsetFromFinalAutoDetectionWouldNotHaveBeenUTF8DependedOnTLD:
+ case kCharsetFromFinalAutoDetectionWouldNotHaveBeenUTF8DependedOnTLDInitialWasASCII:
+ LOGCHARSETMENU(("TEXT:UnlabeledNonUtf8TLD"));
+ Telemetry::AccumulateCategorical(
+ Telemetry::LABELS_ENCODING_OVERRIDE_SITUATION_TEXT::
+ UnlabeledNonUtf8TLD);
+ break;
+ case kCharsetFromInitialAutoDetectionWouldHaveBeenUTF8:
+ case kCharsetFromFinalAutoDetectionWouldHaveBeenUTF8InitialWasASCII:
+ LOGCHARSETMENU(("TEXT:UnlabeledUtf8"));
+ Telemetry::AccumulateCategorical(
+ Telemetry::LABELS_ENCODING_OVERRIDE_SITUATION_TEXT::UnlabeledUtf8);
+ break;
+ case kCharsetFromChannel:
+ if (encoding == UTF_8_ENCODING) {
+ LOGCHARSETMENU(("TEXT:ChannelUtf8"));
+ Telemetry::AccumulateCategorical(
+ Telemetry::LABELS_ENCODING_OVERRIDE_SITUATION_TEXT::ChannelUtf8);
+ } else {
+ LOGCHARSETMENU(("TEXT:ChannelNonUtf8"));
+ Telemetry::AccumulateCategorical(
+ Telemetry::LABELS_ENCODING_OVERRIDE_SITUATION_TEXT::
+ ChannelNonUtf8);
+ }
+ break;
+ default:
+ LOGCHARSETMENU(("TEXT:Bug"));
+ Telemetry::AccumulateCategorical(
+ Telemetry::LABELS_ENCODING_OVERRIDE_SITUATION_TEXT::Bug);
+ break;
+ }
+ } else {
+ switch (charsetSource) {
+ case kCharsetFromInitialAutoDetectionASCII:
+ // Deliberately no final version
+ LOGCHARSETMENU(("HTML:UnlabeledAscii"));
+ Telemetry::AccumulateCategorical(
+ Telemetry::LABELS_ENCODING_OVERRIDE_SITUATION_HTML::UnlabeledAscii);
+ break;
+ case kCharsetFromInitialAutoDetectionWouldNotHaveBeenUTF8Generic:
+ case kCharsetFromFinalAutoDetectionWouldNotHaveBeenUTF8Generic:
+ case kCharsetFromFinalAutoDetectionWouldNotHaveBeenUTF8GenericInitialWasASCII:
+ case kCharsetFromInitialAutoDetectionWouldNotHaveBeenUTF8Content:
+ case kCharsetFromFinalAutoDetectionWouldNotHaveBeenUTF8Content:
+ case kCharsetFromFinalAutoDetectionWouldNotHaveBeenUTF8ContentInitialWasASCII:
+ LOGCHARSETMENU(("HTML:UnlabeledNonUtf8"));
+ Telemetry::AccumulateCategorical(
+ Telemetry::LABELS_ENCODING_OVERRIDE_SITUATION_HTML::
+ UnlabeledNonUtf8);
+ break;
+ case kCharsetFromInitialAutoDetectionWouldNotHaveBeenUTF8DependedOnTLD:
+ case kCharsetFromFinalAutoDetectionWouldNotHaveBeenUTF8DependedOnTLD:
+ case kCharsetFromFinalAutoDetectionWouldNotHaveBeenUTF8DependedOnTLDInitialWasASCII:
+ LOGCHARSETMENU(("HTML:UnlabeledNonUtf8TLD"));
+ Telemetry::AccumulateCategorical(
+ Telemetry::LABELS_ENCODING_OVERRIDE_SITUATION_HTML::
+ UnlabeledNonUtf8TLD);
+ break;
+ case kCharsetFromInitialAutoDetectionWouldHaveBeenUTF8:
+ case kCharsetFromFinalAutoDetectionWouldHaveBeenUTF8InitialWasASCII:
+ LOGCHARSETMENU(("HTML:UnlabeledUtf8"));
+ Telemetry::AccumulateCategorical(
+ Telemetry::LABELS_ENCODING_OVERRIDE_SITUATION_HTML::UnlabeledUtf8);
+ break;
+ case kCharsetFromChannel:
+ if (encoding == UTF_8_ENCODING) {
+ LOGCHARSETMENU(("HTML:ChannelUtf8"));
+ Telemetry::AccumulateCategorical(
+ Telemetry::LABELS_ENCODING_OVERRIDE_SITUATION_HTML::ChannelUtf8);
+ } else {
+ LOGCHARSETMENU(("HTML:ChannelNonUtf8"));
+ Telemetry::AccumulateCategorical(
+ Telemetry::LABELS_ENCODING_OVERRIDE_SITUATION_HTML::
+ ChannelNonUtf8);
+ }
+ break;
+ case kCharsetFromXmlDeclaration:
+ case kCharsetFromMetaTag:
+ if (isFileURL) {
+ LOGCHARSETMENU(("HTML:LocalLabeled"));
+ Telemetry::AccumulateCategorical(
+ Telemetry::LABELS_ENCODING_OVERRIDE_SITUATION_HTML::LocalLabeled);
+ } else if (encoding == UTF_8_ENCODING) {
+ LOGCHARSETMENU(("HTML:MetaUtf8"));
+ Telemetry::AccumulateCategorical(
+ Telemetry::LABELS_ENCODING_OVERRIDE_SITUATION_HTML::InternalUtf8);
+ } else {
+ LOGCHARSETMENU(("HTML:MetaNonUtf8"));
+ Telemetry::AccumulateCategorical(
+ Telemetry::LABELS_ENCODING_OVERRIDE_SITUATION_HTML::
+ InternalNonUtf8);
+ }
+ break;
+ default:
+ LOGCHARSETMENU(("HTML:Bug"));
+ Telemetry::AccumulateCategorical(
+ Telemetry::LABELS_ENCODING_OVERRIDE_SITUATION_HTML::Bug);
+ break;
+ }
+ }
+ return NS_OK;
+}
+
+void nsDocShell::SetParentCharset(const Encoding*& aCharset,
+ int32_t aCharsetSource,
+ nsIPrincipal* aPrincipal) {
+ mParentCharset = aCharset;
+ mParentCharsetSource = aCharsetSource;
+ mParentCharsetPrincipal = aPrincipal;
+}
+
+void nsDocShell::GetParentCharset(const Encoding*& aCharset,
+ int32_t* aCharsetSource,
+ nsIPrincipal** aPrincipal) {
+ aCharset = mParentCharset;
+ *aCharsetSource = mParentCharsetSource;
+ NS_IF_ADDREF(*aPrincipal = mParentCharsetPrincipal);
+}
+
+NS_IMETHODIMP
+nsDocShell::GetHasTrackingContentBlocked(Promise** aPromise) {
+ MOZ_ASSERT(aPromise);
+
+ ErrorResult rv;
+ RefPtr<Document> doc(GetDocument());
+ RefPtr<Promise> retPromise = Promise::Create(doc->GetOwnerGlobal(), rv);
+ if (NS_WARN_IF(rv.Failed())) {
+ return rv.StealNSResult();
+ }
+
+ // Retrieve the document's content blocking events from the parent process.
+ RefPtr<Document::GetContentBlockingEventsPromise> promise =
+ doc->GetContentBlockingEvents();
+ if (promise) {
+ promise->Then(
+ GetCurrentSerialEventTarget(), __func__,
+ [retPromise](const Document::GetContentBlockingEventsPromise::
+ ResolveOrRejectValue& aValue) {
+ if (aValue.IsResolve()) {
+ bool has = aValue.ResolveValue() &
+ nsIWebProgressListener::STATE_BLOCKED_TRACKING_CONTENT;
+ retPromise->MaybeResolve(has);
+ } else {
+ retPromise->MaybeResolve(false);
+ }
+ });
+ } else {
+ retPromise->MaybeResolve(false);
+ }
+
+ retPromise.forget(aPromise);
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetAllowPlugins(bool* aAllowPlugins) {
+ NS_ENSURE_ARG_POINTER(aAllowPlugins);
+
+ *aAllowPlugins = mBrowsingContext->GetAllowPlugins();
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::SetAllowPlugins(bool aAllowPlugins) {
+ // XXX should enable or disable a plugin host
+ return mBrowsingContext->SetAllowPlugins(aAllowPlugins);
+}
+
+NS_IMETHODIMP
+nsDocShell::GetCssErrorReportingEnabled(bool* aEnabled) {
+ MOZ_ASSERT(aEnabled);
+ *aEnabled = mCSSErrorReportingEnabled;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::SetCssErrorReportingEnabled(bool aEnabled) {
+ mCSSErrorReportingEnabled = aEnabled;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetUsePrivateBrowsing(bool* aUsePrivateBrowsing) {
+ NS_ENSURE_ARG_POINTER(aUsePrivateBrowsing);
+ return mBrowsingContext->GetUsePrivateBrowsing(aUsePrivateBrowsing);
+}
+
+void nsDocShell::NotifyPrivateBrowsingChanged() {
+ MOZ_ASSERT(!mIsBeingDestroyed);
+
+ nsTObserverArray<nsWeakPtr>::ForwardIterator iter(mPrivacyObservers);
+ while (iter.HasMore()) {
+ nsWeakPtr ref = iter.GetNext();
+ nsCOMPtr<nsIPrivacyTransitionObserver> obs = do_QueryReferent(ref);
+ if (!obs) {
+ iter.Remove();
+ } else {
+ obs->PrivateModeChanged(UsePrivateBrowsing());
+ }
+ }
+}
+
+NS_IMETHODIMP
+nsDocShell::SetUsePrivateBrowsing(bool aUsePrivateBrowsing) {
+ return mBrowsingContext->SetUsePrivateBrowsing(aUsePrivateBrowsing);
+}
+
+NS_IMETHODIMP
+nsDocShell::SetPrivateBrowsing(bool aUsePrivateBrowsing) {
+ return mBrowsingContext->SetPrivateBrowsing(aUsePrivateBrowsing);
+}
+
+NS_IMETHODIMP
+nsDocShell::GetHasLoadedNonBlankURI(bool* aResult) {
+ NS_ENSURE_ARG_POINTER(aResult);
+
+ *aResult = mHasLoadedNonBlankURI;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetUseRemoteTabs(bool* aUseRemoteTabs) {
+ NS_ENSURE_ARG_POINTER(aUseRemoteTabs);
+ return mBrowsingContext->GetUseRemoteTabs(aUseRemoteTabs);
+}
+
+NS_IMETHODIMP
+nsDocShell::SetRemoteTabs(bool aUseRemoteTabs) {
+ return mBrowsingContext->SetRemoteTabs(aUseRemoteTabs);
+}
+
+NS_IMETHODIMP
+nsDocShell::GetUseRemoteSubframes(bool* aUseRemoteSubframes) {
+ NS_ENSURE_ARG_POINTER(aUseRemoteSubframes);
+ return mBrowsingContext->GetUseRemoteSubframes(aUseRemoteSubframes);
+}
+
+NS_IMETHODIMP
+nsDocShell::SetRemoteSubframes(bool aUseRemoteSubframes) {
+ return mBrowsingContext->SetRemoteSubframes(aUseRemoteSubframes);
+}
+
+NS_IMETHODIMP
+nsDocShell::AddWeakPrivacyTransitionObserver(
+ nsIPrivacyTransitionObserver* aObserver) {
+ nsWeakPtr weakObs = do_GetWeakReference(aObserver);
+ if (!weakObs) {
+ return NS_ERROR_NOT_AVAILABLE;
+ }
+ mPrivacyObservers.AppendElement(weakObs);
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::AddWeakReflowObserver(nsIReflowObserver* aObserver) {
+ nsWeakPtr weakObs = do_GetWeakReference(aObserver);
+ if (!weakObs) {
+ return NS_ERROR_FAILURE;
+ }
+ mReflowObservers.AppendElement(weakObs);
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::RemoveWeakReflowObserver(nsIReflowObserver* aObserver) {
+ nsWeakPtr obs = do_GetWeakReference(aObserver);
+ return mReflowObservers.RemoveElement(obs) ? NS_OK : NS_ERROR_FAILURE;
+}
+
+NS_IMETHODIMP
+nsDocShell::NotifyReflowObservers(bool aInterruptible,
+ DOMHighResTimeStamp aStart,
+ DOMHighResTimeStamp aEnd) {
+ nsTObserverArray<nsWeakPtr>::ForwardIterator iter(mReflowObservers);
+ while (iter.HasMore()) {
+ nsWeakPtr ref = iter.GetNext();
+ nsCOMPtr<nsIReflowObserver> obs = do_QueryReferent(ref);
+ if (!obs) {
+ iter.Remove();
+ } else if (aInterruptible) {
+ obs->ReflowInterruptible(aStart, aEnd);
+ } else {
+ obs->Reflow(aStart, aEnd);
+ }
+ }
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetAllowMetaRedirects(bool* aReturn) {
+ NS_ENSURE_ARG_POINTER(aReturn);
+
+ *aReturn = mAllowMetaRedirects;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::SetAllowMetaRedirects(bool aValue) {
+ mAllowMetaRedirects = aValue;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetAllowSubframes(bool* aAllowSubframes) {
+ NS_ENSURE_ARG_POINTER(aAllowSubframes);
+
+ *aAllowSubframes = mAllowSubframes;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::SetAllowSubframes(bool aAllowSubframes) {
+ mAllowSubframes = aAllowSubframes;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetAllowImages(bool* aAllowImages) {
+ NS_ENSURE_ARG_POINTER(aAllowImages);
+
+ *aAllowImages = mAllowImages;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::SetAllowImages(bool aAllowImages) {
+ mAllowImages = aAllowImages;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetAllowMedia(bool* aAllowMedia) {
+ *aAllowMedia = mAllowMedia;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::SetAllowMedia(bool aAllowMedia) {
+ mAllowMedia = aAllowMedia;
+
+ // Mute or unmute audio contexts attached to the inner window.
+ if (mScriptGlobal) {
+ if (nsPIDOMWindowInner* innerWin = mScriptGlobal->GetCurrentInnerWindow()) {
+ if (aAllowMedia) {
+ innerWin->UnmuteAudioContexts();
+ } else {
+ innerWin->MuteAudioContexts();
+ }
+ }
+ }
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetAllowDNSPrefetch(bool* aAllowDNSPrefetch) {
+ *aAllowDNSPrefetch = mAllowDNSPrefetch;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::SetAllowDNSPrefetch(bool aAllowDNSPrefetch) {
+ mAllowDNSPrefetch = aAllowDNSPrefetch;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetAllowWindowControl(bool* aAllowWindowControl) {
+ *aAllowWindowControl = mAllowWindowControl;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::SetAllowWindowControl(bool aAllowWindowControl) {
+ mAllowWindowControl = aAllowWindowControl;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetAllowContentRetargeting(bool* aAllowContentRetargeting) {
+ *aAllowContentRetargeting = mBrowsingContext->GetAllowContentRetargeting();
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::SetAllowContentRetargeting(bool aAllowContentRetargeting) {
+ BrowsingContext::Transaction txn;
+ txn.SetAllowContentRetargeting(aAllowContentRetargeting);
+ txn.SetAllowContentRetargetingOnChildren(aAllowContentRetargeting);
+ return txn.Commit(mBrowsingContext);
+}
+
+NS_IMETHODIMP
+nsDocShell::GetAllowContentRetargetingOnChildren(
+ bool* aAllowContentRetargetingOnChildren) {
+ *aAllowContentRetargetingOnChildren =
+ mBrowsingContext->GetAllowContentRetargetingOnChildren();
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::SetAllowContentRetargetingOnChildren(
+ bool aAllowContentRetargetingOnChildren) {
+ return mBrowsingContext->SetAllowContentRetargetingOnChildren(
+ aAllowContentRetargetingOnChildren);
+}
+
+NS_IMETHODIMP
+nsDocShell::GetMayEnableCharacterEncodingMenu(
+ bool* aMayEnableCharacterEncodingMenu) {
+ *aMayEnableCharacterEncodingMenu = false;
+ if (!mContentViewer) {
+ return NS_OK;
+ }
+ Document* doc = mContentViewer->GetDocument();
+ if (!doc) {
+ return NS_OK;
+ }
+ if (doc->WillIgnoreCharsetOverride()) {
+ return NS_OK;
+ }
+
+ *aMayEnableCharacterEncodingMenu = true;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetAllDocShellsInSubtree(int32_t aItemType,
+ DocShellEnumeratorDirection aDirection,
+ nsTArray<RefPtr<nsIDocShell>>& aResult) {
+ aResult.Clear();
+
+ nsDocShellEnumerator docShellEnum(
+ (aDirection == ENUMERATE_FORWARDS)
+ ? nsDocShellEnumerator::EnumerationDirection::Forwards
+ : nsDocShellEnumerator::EnumerationDirection::Backwards,
+ aItemType, *this);
+
+ nsresult rv = docShellEnum.BuildDocShellArray(aResult);
+ if (NS_FAILED(rv)) {
+ return rv;
+ }
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetAppType(AppType* aAppType) {
+ *aAppType = mAppType;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::SetAppType(AppType aAppType) {
+ mAppType = aAppType;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetAllowAuth(bool* aAllowAuth) {
+ *aAllowAuth = mAllowAuth;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::SetAllowAuth(bool aAllowAuth) {
+ mAllowAuth = aAllowAuth;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetZoom(float* aZoom) {
+ NS_ENSURE_ARG_POINTER(aZoom);
+ *aZoom = 1.0f;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::SetZoom(float aZoom) { return NS_ERROR_NOT_IMPLEMENTED; }
+
+NS_IMETHODIMP
+nsDocShell::GetBusyFlags(BusyFlags* aBusyFlags) {
+ NS_ENSURE_ARG_POINTER(aBusyFlags);
+
+ *aBusyFlags = mBusyFlags;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::TabToTreeOwner(bool aForward, bool aForDocumentNavigation,
+ bool* aTookFocus) {
+ NS_ENSURE_ARG_POINTER(aTookFocus);
+
+ nsCOMPtr<nsIWebBrowserChromeFocus> chromeFocus = do_GetInterface(mTreeOwner);
+ if (chromeFocus) {
+ if (aForward) {
+ *aTookFocus =
+ NS_SUCCEEDED(chromeFocus->FocusNextElement(aForDocumentNavigation));
+ } else {
+ *aTookFocus =
+ NS_SUCCEEDED(chromeFocus->FocusPrevElement(aForDocumentNavigation));
+ }
+ } else {
+ *aTookFocus = false;
+ }
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetLoadURIDelegate(nsILoadURIDelegate** aLoadURIDelegate) {
+ nsCOMPtr<nsILoadURIDelegate> delegate = GetLoadURIDelegate();
+ delegate.forget(aLoadURIDelegate);
+ return NS_OK;
+}
+
+already_AddRefed<nsILoadURIDelegate> nsDocShell::GetLoadURIDelegate() {
+ if (nsCOMPtr<nsILoadURIDelegate> result =
+ do_QueryActor("LoadURIDelegate", GetDocument())) {
+ return result.forget();
+ }
+
+ return nullptr;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetUseErrorPages(bool* aUseErrorPages) {
+ *aUseErrorPages = mBrowsingContext->GetUseErrorPages();
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::SetUseErrorPages(bool aUseErrorPages) {
+ return mBrowsingContext->SetUseErrorPages(aUseErrorPages);
+}
+
+NS_IMETHODIMP
+nsDocShell::GetPreviousEntryIndex(int32_t* aPreviousEntryIndex) {
+ *aPreviousEntryIndex = mPreviousEntryIndex;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetLoadedEntryIndex(int32_t* aLoadedEntryIndex) {
+ *aLoadedEntryIndex = mLoadedEntryIndex;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::HistoryPurged(int32_t aNumEntries) {
+ // These indices are used for fastback cache eviction, to determine
+ // which session history entries are candidates for content viewer
+ // eviction. We need to adjust by the number of entries that we
+ // just purged from history, so that we look at the right session history
+ // entries during eviction.
+ mPreviousEntryIndex = std::max(-1, mPreviousEntryIndex - aNumEntries);
+ mLoadedEntryIndex = std::max(0, mLoadedEntryIndex - aNumEntries);
+
+ for (auto* child : mChildList.ForwardRange()) {
+ nsCOMPtr<nsIDocShell> shell = do_QueryObject(child);
+ if (shell) {
+ shell->HistoryPurged(aNumEntries);
+ }
+ }
+
+ return NS_OK;
+}
+
+void nsDocShell::TriggerParentCheckDocShellIsEmpty() {
+ if (RefPtr<nsDocShell> parent = GetInProcessParentDocshell()) {
+ parent->DocLoaderIsEmpty(true);
+ }
+ if (GetBrowsingContext()->IsContentSubframe() &&
+ !GetBrowsingContext()->GetParent()->IsInProcess()) {
+ if (BrowserChild* browserChild = BrowserChild::GetFrom(this)) {
+ mozilla::Unused << browserChild->SendMaybeFireEmbedderLoadEvents(
+ EmbedderElementEventType::NoEvent);
+ }
+ }
+}
+
+nsresult nsDocShell::HistoryEntryRemoved(int32_t aIndex) {
+ // These indices are used for fastback cache eviction, to determine
+ // which session history entries are candidates for content viewer
+ // eviction. We need to adjust by the number of entries that we
+ // just purged from history, so that we look at the right session history
+ // entries during eviction.
+ if (aIndex == mPreviousEntryIndex) {
+ mPreviousEntryIndex = -1;
+ } else if (aIndex < mPreviousEntryIndex) {
+ --mPreviousEntryIndex;
+ }
+ if (mLoadedEntryIndex == aIndex) {
+ mLoadedEntryIndex = 0;
+ } else if (aIndex < mLoadedEntryIndex) {
+ --mLoadedEntryIndex;
+ }
+
+ for (auto* child : mChildList.ForwardRange()) {
+ nsCOMPtr<nsIDocShell> shell = do_QueryObject(child);
+ if (shell) {
+ static_cast<nsDocShell*>(shell.get())->HistoryEntryRemoved(aIndex);
+ }
+ }
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::SetRecordProfileTimelineMarkers(bool aValue) {
+ bool currentValue = nsIDocShell::GetRecordProfileTimelineMarkers();
+ if (currentValue == aValue) {
+ return NS_OK;
+ }
+
+ if (aValue) {
+ MOZ_ASSERT(!TimelineConsumers::HasConsumer(this));
+ TimelineConsumers::AddConsumer(this);
+ MOZ_ASSERT(TimelineConsumers::HasConsumer(this));
+ UseEntryScriptProfiling();
+ } else {
+ MOZ_ASSERT(TimelineConsumers::HasConsumer(this));
+ TimelineConsumers::RemoveConsumer(this);
+ MOZ_ASSERT(!TimelineConsumers::HasConsumer(this));
+ UnuseEntryScriptProfiling();
+ }
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetRecordProfileTimelineMarkers(bool* aValue) {
+ *aValue = !!mObserved;
+ return NS_OK;
+}
+
+nsresult nsDocShell::PopProfileTimelineMarkers(
+ JSContext* aCx, JS::MutableHandle<JS::Value> aOut) {
+ nsTArray<dom::ProfileTimelineMarker> store;
+ SequenceRooter<dom::ProfileTimelineMarker> rooter(aCx, &store);
+
+ TimelineConsumers::PopMarkers(this, aCx, store);
+
+ if (!ToJSValue(aCx, store, aOut)) {
+ JS_ClearPendingException(aCx);
+ return NS_ERROR_UNEXPECTED;
+ }
+
+ return NS_OK;
+}
+
+nsresult nsDocShell::Now(DOMHighResTimeStamp* aWhen) {
+ *aWhen = (TimeStamp::Now() - TimeStamp::ProcessCreation()).ToMilliseconds();
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::SetWindowDraggingAllowed(bool aValue) {
+ RefPtr<nsDocShell> parent = GetInProcessParentDocshell();
+ if (!aValue && mItemType == typeChrome && !parent) {
+ // Window dragging is always allowed for top level
+ // chrome docshells.
+ return NS_ERROR_FAILURE;
+ }
+ mWindowDraggingAllowed = aValue;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetWindowDraggingAllowed(bool* aValue) {
+ // window dragging regions in CSS (-moz-window-drag:drag)
+ // can be slow. Default behavior is to only allow it for
+ // chrome top level windows.
+ RefPtr<nsDocShell> parent = GetInProcessParentDocshell();
+ if (mItemType == typeChrome && !parent) {
+ // Top level chrome window
+ *aValue = true;
+ } else {
+ *aValue = mWindowDraggingAllowed;
+ }
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetCurrentDocumentChannel(nsIChannel** aResult) {
+ NS_IF_ADDREF(*aResult = GetCurrentDocChannel());
+ return NS_OK;
+}
+
+nsIChannel* nsDocShell::GetCurrentDocChannel() {
+ if (mContentViewer) {
+ Document* doc = mContentViewer->GetDocument();
+ if (doc) {
+ return doc->GetChannel();
+ }
+ }
+ return nullptr;
+}
+
+NS_IMETHODIMP
+nsDocShell::AddWeakScrollObserver(nsIScrollObserver* aObserver) {
+ nsWeakPtr weakObs = do_GetWeakReference(aObserver);
+ if (!weakObs) {
+ return NS_ERROR_FAILURE;
+ }
+ mScrollObservers.AppendElement(weakObs);
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::RemoveWeakScrollObserver(nsIScrollObserver* aObserver) {
+ nsWeakPtr obs = do_GetWeakReference(aObserver);
+ return mScrollObservers.RemoveElement(obs) ? NS_OK : NS_ERROR_FAILURE;
+}
+
+void nsDocShell::NotifyAsyncPanZoomStarted() {
+ nsTObserverArray<nsWeakPtr>::ForwardIterator iter(mScrollObservers);
+ while (iter.HasMore()) {
+ nsWeakPtr ref = iter.GetNext();
+ nsCOMPtr<nsIScrollObserver> obs = do_QueryReferent(ref);
+ if (obs) {
+ obs->AsyncPanZoomStarted();
+ } else {
+ iter.Remove();
+ }
+ }
+}
+
+void nsDocShell::NotifyAsyncPanZoomStopped() {
+ nsTObserverArray<nsWeakPtr>::ForwardIterator iter(mScrollObservers);
+ while (iter.HasMore()) {
+ nsWeakPtr ref = iter.GetNext();
+ nsCOMPtr<nsIScrollObserver> obs = do_QueryReferent(ref);
+ if (obs) {
+ obs->AsyncPanZoomStopped();
+ } else {
+ iter.Remove();
+ }
+ }
+}
+
+NS_IMETHODIMP
+nsDocShell::NotifyScrollObservers() {
+ nsTObserverArray<nsWeakPtr>::ForwardIterator iter(mScrollObservers);
+ while (iter.HasMore()) {
+ nsWeakPtr ref = iter.GetNext();
+ nsCOMPtr<nsIScrollObserver> obs = do_QueryReferent(ref);
+ if (obs) {
+ obs->ScrollPositionChanged();
+ } else {
+ iter.Remove();
+ }
+ }
+ return NS_OK;
+}
+
+//*****************************************************************************
+// nsDocShell::nsIDocShellTreeItem
+//*****************************************************************************
+
+NS_IMETHODIMP
+nsDocShell::GetName(nsAString& aName) {
+ aName = mBrowsingContext->Name();
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::SetName(const nsAString& aName) {
+ return mBrowsingContext->SetName(aName);
+}
+
+NS_IMETHODIMP
+nsDocShell::NameEquals(const nsAString& aName, bool* aResult) {
+ NS_ENSURE_ARG_POINTER(aResult);
+ *aResult = mBrowsingContext->NameEquals(aName);
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetCustomUserAgent(nsAString& aCustomUserAgent) {
+ mBrowsingContext->GetCustomUserAgent(aCustomUserAgent);
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::SetCustomUserAgent(const nsAString& aCustomUserAgent) {
+ if (mWillChangeProcess) {
+ NS_WARNING("SetCustomUserAgent: Process is changing. Ignoring set");
+ return NS_ERROR_FAILURE;
+ }
+
+ return mBrowsingContext->SetCustomUserAgent(aCustomUserAgent);
+}
+
+NS_IMETHODIMP
+nsDocShell::ClearCachedPlatform() {
+ RefPtr<nsGlobalWindowInner> win =
+ mScriptGlobal ? mScriptGlobal->GetCurrentInnerWindowInternal() : nullptr;
+ if (win) {
+ Navigator* navigator = win->Navigator();
+ if (navigator) {
+ navigator->ClearPlatformCache();
+ }
+ }
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::ClearCachedUserAgent() {
+ RefPtr<nsGlobalWindowInner> win =
+ mScriptGlobal ? mScriptGlobal->GetCurrentInnerWindowInternal() : nullptr;
+ if (win) {
+ Navigator* navigator = win->Navigator();
+ if (navigator) {
+ navigator->ClearUserAgentCache();
+ }
+ }
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetMetaViewportOverride(
+ MetaViewportOverride* aMetaViewportOverride) {
+ NS_ENSURE_ARG_POINTER(aMetaViewportOverride);
+
+ *aMetaViewportOverride = mMetaViewportOverride;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::SetMetaViewportOverride(
+ MetaViewportOverride aMetaViewportOverride) {
+ // We don't have a way to verify this coming from Javascript, so this check is
+ // still needed.
+ if (!(aMetaViewportOverride == META_VIEWPORT_OVERRIDE_NONE ||
+ aMetaViewportOverride == META_VIEWPORT_OVERRIDE_ENABLED ||
+ aMetaViewportOverride == META_VIEWPORT_OVERRIDE_DISABLED)) {
+ return NS_ERROR_INVALID_ARG;
+ }
+
+ mMetaViewportOverride = aMetaViewportOverride;
+
+ // Inform our presShell that it needs to re-check its need for a viewport
+ // override.
+ if (RefPtr<PresShell> presShell = GetPresShell()) {
+ presShell->MaybeRecreateMobileViewportManager(true);
+ }
+
+ return NS_OK;
+}
+
+/* virtual */
+int32_t nsDocShell::ItemType() { return mItemType; }
+
+NS_IMETHODIMP
+nsDocShell::GetItemType(int32_t* aItemType) {
+ NS_ENSURE_ARG_POINTER(aItemType);
+
+ MOZ_DIAGNOSTIC_ASSERT(
+ (mBrowsingContext->IsContent() ? typeContent : typeChrome) == mItemType);
+ *aItemType = mItemType;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetInProcessParent(nsIDocShellTreeItem** aParent) {
+ if (!mParent) {
+ *aParent = nullptr;
+ } else {
+ CallQueryInterface(mParent, aParent);
+ }
+ // Note that in the case when the parent is not an nsIDocShellTreeItem we
+ // don't want to throw; we just want to return null.
+ return NS_OK;
+}
+
+// With Fission, related nsDocShell objects may exist in a different process. In
+// that case, this method will return `nullptr`, despite a parent nsDocShell
+// object existing.
+//
+// Prefer using `BrowsingContext::Parent()`, which will succeed even if the
+// parent entry is not in the current process, and handle the case where the
+// parent nsDocShell is inaccessible.
+already_AddRefed<nsDocShell> nsDocShell::GetInProcessParentDocshell() {
+ nsCOMPtr<nsIDocShell> docshell = do_QueryInterface(GetAsSupports(mParent));
+ return docshell.forget().downcast<nsDocShell>();
+}
+
+void nsDocShell::MaybeCreateInitialClientSource(nsIPrincipal* aPrincipal) {
+ MOZ_ASSERT(!mIsBeingDestroyed);
+
+ // If there is an existing document then there is no need to create
+ // a client for a future initial about:blank document.
+ if (mScriptGlobal && mScriptGlobal->GetCurrentInnerWindowInternal() &&
+ mScriptGlobal->GetCurrentInnerWindowInternal()->GetExtantDoc()) {
+ MOZ_DIAGNOSTIC_ASSERT(mScriptGlobal->GetCurrentInnerWindowInternal()
+ ->GetClientInfo()
+ .isSome());
+ MOZ_DIAGNOSTIC_ASSERT(!mInitialClientSource);
+ return;
+ }
+
+ // Don't recreate the initial client source. We call this multiple times
+ // when DoChannelLoad() is called before CreateAboutBlankContentViewer.
+ if (mInitialClientSource) {
+ return;
+ }
+
+ // Don't pre-allocate the client when we are sandboxed. The inherited
+ // principal does not take sandboxing into account.
+ // TODO: Refactor sandboxing principal code out so we can use it here.
+ if (!aPrincipal && mBrowsingContext->GetSandboxFlags()) {
+ return;
+ }
+
+ // We cannot get inherited foreign partitioned principal here. Instead, we
+ // directly check which principal we want to inherit for the service worker.
+ nsIPrincipal* principal =
+ aPrincipal
+ ? aPrincipal
+ : GetInheritedPrincipal(
+ false, StoragePrincipalHelper::
+ ShouldUsePartitionPrincipalForServiceWorker(this));
+
+ // Sometimes there is no principal available when we are called from
+ // CreateAboutBlankContentViewer. For example, sometimes the principal
+ // is only extracted from the load context after the document is created
+ // in Document::ResetToURI(). Ideally we would do something similar
+ // here, but for now lets just avoid the issue by not preallocating the
+ // client.
+ if (!principal) {
+ return;
+ }
+
+ nsCOMPtr<nsPIDOMWindowOuter> win = GetWindow();
+ if (!win) {
+ return;
+ }
+
+ mInitialClientSource = ClientManager::CreateSource(
+ ClientType::Window, win->EventTargetFor(TaskCategory::Other), principal);
+ MOZ_DIAGNOSTIC_ASSERT(mInitialClientSource);
+
+ // Mark the initial client as execution ready, but owned by the docshell.
+ // If the client is actually used this will cause ClientSource to force
+ // the creation of the initial about:blank by calling
+ // nsDocShell::GetDocument().
+ mInitialClientSource->DocShellExecutionReady(this);
+
+ // Next, check to see if the parent is controlled.
+ nsCOMPtr<nsIDocShell> parent = GetInProcessParentDocshell();
+ nsPIDOMWindowOuter* parentOuter = parent ? parent->GetWindow() : nullptr;
+ nsPIDOMWindowInner* parentInner =
+ parentOuter ? parentOuter->GetCurrentInnerWindow() : nullptr;
+ if (!parentInner) {
+ return;
+ }
+
+ nsCOMPtr<nsIURI> uri;
+ MOZ_ALWAYS_SUCCEEDS(NS_NewURI(getter_AddRefs(uri), "about:blank"_ns));
+
+ // We're done if there is no parent controller or if this docshell
+ // is not permitted to control for some reason.
+ Maybe<ServiceWorkerDescriptor> controller(parentInner->GetController());
+ if (controller.isNothing() ||
+ !ServiceWorkerAllowedToControlWindow(principal, uri)) {
+ return;
+ }
+
+ mInitialClientSource->InheritController(controller.ref());
+}
+
+Maybe<ClientInfo> nsDocShell::GetInitialClientInfo() const {
+ if (mInitialClientSource) {
+ Maybe<ClientInfo> result;
+ result.emplace(mInitialClientSource->Info());
+ return result;
+ }
+
+ nsGlobalWindowInner* innerWindow =
+ mScriptGlobal ? mScriptGlobal->GetCurrentInnerWindowInternal() : nullptr;
+ Document* doc = innerWindow ? innerWindow->GetExtantDoc() : nullptr;
+
+ if (!doc || !doc->IsInitialDocument()) {
+ return Maybe<ClientInfo>();
+ }
+
+ return innerWindow->GetClientInfo();
+}
+
+nsresult nsDocShell::SetDocLoaderParent(nsDocLoader* aParent) {
+ bool wasFrame = IsSubframe();
+
+ nsresult rv = nsDocLoader::SetDocLoaderParent(aParent);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ nsCOMPtr<nsISupportsPriority> priorityGroup = do_QueryInterface(mLoadGroup);
+ if (wasFrame != IsSubframe() && priorityGroup) {
+ priorityGroup->AdjustPriority(wasFrame ? -1 : 1);
+ }
+
+ // Curse ambiguous nsISupports inheritance!
+ nsISupports* parent = GetAsSupports(aParent);
+
+ // If parent is another docshell, we inherit all their flags for
+ // allowing plugins, scripting etc.
+ bool value;
+ nsCOMPtr<nsIDocShell> parentAsDocShell(do_QueryInterface(parent));
+
+ if (parentAsDocShell) {
+ if (mAllowMetaRedirects &&
+ NS_SUCCEEDED(parentAsDocShell->GetAllowMetaRedirects(&value))) {
+ SetAllowMetaRedirects(value);
+ }
+ if (mAllowSubframes &&
+ NS_SUCCEEDED(parentAsDocShell->GetAllowSubframes(&value))) {
+ SetAllowSubframes(value);
+ }
+ if (mAllowImages &&
+ NS_SUCCEEDED(parentAsDocShell->GetAllowImages(&value))) {
+ SetAllowImages(value);
+ }
+ SetAllowMedia(parentAsDocShell->GetAllowMedia() && mAllowMedia);
+ if (mAllowWindowControl &&
+ NS_SUCCEEDED(parentAsDocShell->GetAllowWindowControl(&value))) {
+ SetAllowWindowControl(value);
+ }
+ if (NS_FAILED(parentAsDocShell->GetAllowDNSPrefetch(&value))) {
+ value = false;
+ }
+ SetAllowDNSPrefetch(mAllowDNSPrefetch && value);
+
+ // We don't need to inherit metaViewportOverride, because the viewport
+ // is only relevant for the outermost nsDocShell, not for any iframes
+ // like this that might be embedded within it.
+ }
+
+ nsCOMPtr<nsIURIContentListener> parentURIListener(do_GetInterface(parent));
+ if (parentURIListener) {
+ mContentListener->SetParentContentListener(parentURIListener);
+ }
+
+ return NS_OK;
+}
+
+void nsDocShell::MaybeRestoreWindowName() {
+ if (!StaticPrefs::privacy_window_name_update_enabled()) {
+ return;
+ }
+
+ // We only restore window.name for the top-level content.
+ if (!mBrowsingContext->IsTopContent()) {
+ return;
+ }
+
+ nsAutoString name;
+
+ // Following implements https://html.spec.whatwg.org/#history-traversal:
+ // Step 4.4. Check if the loading entry has a name.
+
+ if (mLSHE) {
+ mLSHE->GetName(name);
+ }
+
+ if (mLoadingEntry) {
+ name = mLoadingEntry->mInfo.GetName();
+ }
+
+ if (name.IsEmpty()) {
+ return;
+ }
+
+ // Step 4.4.1. Set the name to the browsing context.
+ Unused << mBrowsingContext->SetName(name);
+
+ // Step 4.4.2. Clear the name of all entries that are contiguous and
+ // same-origin with the loading entry.
+ if (mLSHE) {
+ nsSHistory::WalkContiguousEntries(
+ mLSHE, [](nsISHEntry* aEntry) { aEntry->SetName(EmptyString()); });
+ }
+
+ if (mLoadingEntry) {
+ // Clear the name of the session entry in the child side. For parent side,
+ // the clearing will be done when we commit the history to the parent.
+ mLoadingEntry->mInfo.SetName(EmptyString());
+ }
+}
+
+void nsDocShell::StoreWindowNameToSHEntries() {
+ MOZ_ASSERT(mBrowsingContext->IsTopContent());
+
+ nsAutoString name;
+ mBrowsingContext->GetName(name);
+
+ if (mOSHE) {
+ nsSHistory::WalkContiguousEntries(
+ mOSHE, [&](nsISHEntry* aEntry) { aEntry->SetName(name); });
+ }
+
+ if (mozilla::SessionHistoryInParent()) {
+ if (XRE_IsParentProcess()) {
+ SessionHistoryEntry* entry =
+ mBrowsingContext->Canonical()->GetActiveSessionHistoryEntry();
+ if (entry) {
+ nsSHistory::WalkContiguousEntries(
+ entry, [&](nsISHEntry* aEntry) { aEntry->SetName(name); });
+ }
+ } else {
+ // Ask parent process to store the name in entries.
+ mozilla::Unused
+ << ContentChild::GetSingleton()
+ ->SendSessionHistoryEntryStoreWindowNameInContiguousEntries(
+ mBrowsingContext, name);
+ }
+ }
+}
+
+NS_IMETHODIMP
+nsDocShell::GetInProcessSameTypeParent(nsIDocShellTreeItem** aParent) {
+ if (BrowsingContext* parentBC = mBrowsingContext->GetParent()) {
+ *aParent = do_AddRef(parentBC->GetDocShell()).take();
+ }
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetSameTypeInProcessParentIgnoreBrowserBoundaries(
+ nsIDocShell** aParent) {
+ NS_ENSURE_ARG_POINTER(aParent);
+ *aParent = nullptr;
+
+ nsCOMPtr<nsIDocShellTreeItem> parent =
+ do_QueryInterface(GetAsSupports(mParent));
+ if (!parent) {
+ return NS_OK;
+ }
+
+ if (parent->ItemType() == mItemType) {
+ nsCOMPtr<nsIDocShell> parentDS = do_QueryInterface(parent);
+ parentDS.forget(aParent);
+ }
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetInProcessRootTreeItem(nsIDocShellTreeItem** aRootTreeItem) {
+ NS_ENSURE_ARG_POINTER(aRootTreeItem);
+
+ RefPtr<nsDocShell> root = this;
+ RefPtr<nsDocShell> parent = root->GetInProcessParentDocshell();
+ while (parent) {
+ root = parent;
+ parent = root->GetInProcessParentDocshell();
+ }
+
+ root.forget(aRootTreeItem);
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetInProcessSameTypeRootTreeItem(
+ nsIDocShellTreeItem** aRootTreeItem) {
+ NS_ENSURE_ARG_POINTER(aRootTreeItem);
+ *aRootTreeItem = static_cast<nsIDocShellTreeItem*>(this);
+
+ nsCOMPtr<nsIDocShellTreeItem> parent;
+ NS_ENSURE_SUCCESS(GetInProcessSameTypeParent(getter_AddRefs(parent)),
+ NS_ERROR_FAILURE);
+ while (parent) {
+ *aRootTreeItem = parent;
+ NS_ENSURE_SUCCESS(
+ (*aRootTreeItem)->GetInProcessSameTypeParent(getter_AddRefs(parent)),
+ NS_ERROR_FAILURE);
+ }
+ NS_ADDREF(*aRootTreeItem);
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetTreeOwner(nsIDocShellTreeOwner** aTreeOwner) {
+ NS_ENSURE_ARG_POINTER(aTreeOwner);
+
+ *aTreeOwner = mTreeOwner;
+ NS_IF_ADDREF(*aTreeOwner);
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::SetTreeOwner(nsIDocShellTreeOwner* aTreeOwner) {
+ if (mIsBeingDestroyed && aTreeOwner) {
+ return NS_ERROR_FAILURE;
+ }
+
+ // Don't automatically set the progress based on the tree owner for frames
+ if (!IsSubframe()) {
+ nsCOMPtr<nsIWebProgress> webProgress =
+ do_QueryInterface(GetAsSupports(this));
+
+ if (webProgress) {
+ nsCOMPtr<nsIWebProgressListener> oldListener =
+ do_QueryInterface(mTreeOwner);
+ nsCOMPtr<nsIWebProgressListener> newListener =
+ do_QueryInterface(aTreeOwner);
+
+ if (oldListener) {
+ webProgress->RemoveProgressListener(oldListener);
+ }
+
+ if (newListener) {
+ webProgress->AddProgressListener(newListener,
+ nsIWebProgress::NOTIFY_ALL);
+ }
+ }
+ }
+
+ mTreeOwner = aTreeOwner; // Weak reference per API
+
+ for (auto* childDocLoader : mChildList.ForwardRange()) {
+ nsCOMPtr<nsIDocShellTreeItem> child = do_QueryObject(childDocLoader);
+ NS_ENSURE_TRUE(child, NS_ERROR_FAILURE);
+
+ if (child->ItemType() == mItemType) {
+ child->SetTreeOwner(aTreeOwner);
+ }
+ }
+
+ // If we're in the content process and have had a TreeOwner set on us, extract
+ // our BrowserChild actor. If we've already had our BrowserChild set, assert
+ // that it hasn't changed.
+ if (mTreeOwner && XRE_IsContentProcess()) {
+ nsCOMPtr<nsIBrowserChild> newBrowserChild = do_GetInterface(mTreeOwner);
+ MOZ_ASSERT(newBrowserChild,
+ "No BrowserChild actor for tree owner in Content!");
+
+ if (mBrowserChild) {
+ nsCOMPtr<nsIBrowserChild> oldBrowserChild =
+ do_QueryReferent(mBrowserChild);
+ MOZ_RELEASE_ASSERT(
+ oldBrowserChild == newBrowserChild,
+ "Cannot change BrowserChild during nsDocShell lifetime!");
+ } else {
+ mBrowserChild = do_GetWeakReference(newBrowserChild);
+ }
+ }
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetHistoryID(nsID& aID) {
+ aID = mBrowsingContext->GetHistoryID();
+ return NS_OK;
+}
+
+const nsID& nsDocShell::HistoryID() { return mBrowsingContext->GetHistoryID(); }
+
+NS_IMETHODIMP
+nsDocShell::GetIsInUnload(bool* aIsInUnload) {
+ *aIsInUnload = mFiredUnloadEvent;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetInProcessChildCount(int32_t* aChildCount) {
+ NS_ENSURE_ARG_POINTER(aChildCount);
+ *aChildCount = mChildList.Length();
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::AddChild(nsIDocShellTreeItem* aChild) {
+ NS_ENSURE_ARG_POINTER(aChild);
+
+ RefPtr<nsDocLoader> childAsDocLoader = GetAsDocLoader(aChild);
+ NS_ENSURE_TRUE(childAsDocLoader, NS_ERROR_UNEXPECTED);
+
+ // Make sure we're not creating a loop in the docshell tree
+ nsDocLoader* ancestor = this;
+ do {
+ if (childAsDocLoader == ancestor) {
+ return NS_ERROR_ILLEGAL_VALUE;
+ }
+ ancestor = ancestor->GetParent();
+ } while (ancestor);
+
+ // Make sure to remove the child from its current parent.
+ nsDocLoader* childsParent = childAsDocLoader->GetParent();
+ if (childsParent) {
+ nsresult rv = childsParent->RemoveChildLoader(childAsDocLoader);
+ NS_ENSURE_SUCCESS(rv, rv);
+ }
+
+ // Make sure to clear the treeowner in case this child is a different type
+ // from us.
+ aChild->SetTreeOwner(nullptr);
+
+ nsresult res = AddChildLoader(childAsDocLoader);
+ NS_ENSURE_SUCCESS(res, res);
+ NS_ASSERTION(!mChildList.IsEmpty(),
+ "child list must not be empty after a successful add");
+
+ /* Set the child's global history if the parent has one */
+ if (mBrowsingContext->GetUseGlobalHistory()) {
+ // childDocShell->SetUseGlobalHistory(true);
+ // this should be set through BC inherit
+ MOZ_ASSERT(aChild->GetBrowsingContext()->GetUseGlobalHistory());
+ }
+
+ if (aChild->ItemType() != mItemType) {
+ return NS_OK;
+ }
+
+ aChild->SetTreeOwner(mTreeOwner);
+
+ nsCOMPtr<nsIDocShell> childAsDocShell(do_QueryInterface(aChild));
+ if (!childAsDocShell) {
+ return NS_OK;
+ }
+
+ // charset, style-disabling, and zoom will be inherited in SetupNewViewer()
+
+ // Now take this document's charset and set the child's parentCharset field
+ // to it. We'll later use that field, in the loading process, for the
+ // charset choosing algorithm.
+ // If we fail, at any point, we just return NS_OK.
+ // This code has some performance impact. But this will be reduced when
+ // the current charset will finally be stored as an Atom, avoiding the
+ // alias resolution extra look-up.
+
+ // we are NOT going to propagate the charset is this Chrome's docshell
+ if (mItemType == nsIDocShellTreeItem::typeChrome) {
+ return NS_OK;
+ }
+
+ // get the parent's current charset
+ if (!mContentViewer) {
+ return NS_OK;
+ }
+ Document* doc = mContentViewer->GetDocument();
+ if (!doc) {
+ return NS_OK;
+ }
+
+ const Encoding* parentCS = doc->GetDocumentCharacterSet();
+ int32_t charsetSource = doc->GetDocumentCharacterSetSource();
+ // set the child's parentCharset
+ childAsDocShell->SetParentCharset(parentCS, charsetSource,
+ doc->NodePrincipal());
+
+ // printf("### 1 >>> Adding child. Parent CS = %s. ItemType = %d.\n",
+ // NS_LossyConvertUTF16toASCII(parentCS).get(), mItemType);
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::RemoveChild(nsIDocShellTreeItem* aChild) {
+ NS_ENSURE_ARG_POINTER(aChild);
+
+ RefPtr<nsDocLoader> childAsDocLoader = GetAsDocLoader(aChild);
+ NS_ENSURE_TRUE(childAsDocLoader, NS_ERROR_UNEXPECTED);
+
+ nsresult rv = RemoveChildLoader(childAsDocLoader);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ aChild->SetTreeOwner(nullptr);
+
+ return nsDocLoader::AddDocLoaderAsChildOfRoot(childAsDocLoader);
+}
+
+NS_IMETHODIMP
+nsDocShell::GetInProcessChildAt(int32_t aIndex, nsIDocShellTreeItem** aChild) {
+ NS_ENSURE_ARG_POINTER(aChild);
+
+ RefPtr<nsDocShell> child = GetInProcessChildAt(aIndex);
+ NS_ENSURE_TRUE(child, NS_ERROR_UNEXPECTED);
+
+ child.forget(aChild);
+
+ return NS_OK;
+}
+
+nsDocShell* nsDocShell::GetInProcessChildAt(int32_t aIndex) {
+#ifdef DEBUG
+ if (aIndex < 0) {
+ NS_WARNING("Negative index passed to GetChildAt");
+ } else if (static_cast<uint32_t>(aIndex) >= mChildList.Length()) {
+ NS_WARNING("Too large an index passed to GetChildAt");
+ }
+#endif
+
+ nsIDocumentLoader* child = ChildAt(aIndex);
+
+ // child may be nullptr here.
+ return static_cast<nsDocShell*>(child);
+}
+
+nsresult nsDocShell::AddChildSHEntry(nsISHEntry* aCloneRef,
+ nsISHEntry* aNewEntry,
+ int32_t aChildOffset, uint32_t aLoadType,
+ bool aCloneChildren) {
+ MOZ_ASSERT(!mozilla::SessionHistoryInParent());
+ nsresult rv = NS_OK;
+
+ if (mLSHE && aLoadType != LOAD_PUSHSTATE) {
+ /* You get here if you are currently building a
+ * hierarchy ie.,you just visited a frameset page
+ */
+ if (NS_FAILED(mLSHE->ReplaceChild(aNewEntry))) {
+ rv = mLSHE->AddChild(aNewEntry, aChildOffset);
+ }
+ } else if (!aCloneRef) {
+ /* This is an initial load in some subframe. Just append it if we can */
+ if (mOSHE) {
+ rv = mOSHE->AddChild(aNewEntry, aChildOffset, UseRemoteSubframes());
+ }
+ } else {
+ RefPtr<ChildSHistory> shistory = GetRootSessionHistory();
+ if (shistory) {
+ rv = shistory->LegacySHistory()->AddChildSHEntryHelper(
+ aCloneRef, aNewEntry, mBrowsingContext->Top(), aCloneChildren);
+ }
+ }
+ return rv;
+}
+
+nsresult nsDocShell::AddChildSHEntryToParent(nsISHEntry* aNewEntry,
+ int32_t aChildOffset,
+ bool aCloneChildren) {
+ MOZ_ASSERT(!mozilla::SessionHistoryInParent());
+ /* You will get here when you are in a subframe and
+ * a new url has been loaded on you.
+ * The mOSHE in this subframe will be the previous url's
+ * mOSHE. This mOSHE will be used as the identification
+ * for this subframe in the CloneAndReplace function.
+ */
+
+ // In this case, we will end up calling AddEntry, which increases the
+ // current index by 1
+ RefPtr<ChildSHistory> rootSH = GetRootSessionHistory();
+ if (rootSH) {
+ mPreviousEntryIndex = rootSH->Index();
+ }
+
+ nsresult rv;
+ // XXX(farre): this is not Fission safe, expect errors. This never
+ // get's executed once session history in the parent is enabled.
+ nsCOMPtr<nsIDocShell> parent = do_QueryInterface(GetAsSupports(mParent), &rv);
+ NS_WARNING_ASSERTION(
+ parent || !UseRemoteSubframes(),
+ "Failed to add child session history entry! This will be resolved once "
+ "session history in the parent is enabled.");
+ if (parent) {
+ rv = nsDocShell::Cast(parent)->AddChildSHEntry(
+ mOSHE, aNewEntry, aChildOffset, mLoadType, aCloneChildren);
+ }
+
+ if (rootSH) {
+ mLoadedEntryIndex = rootSH->Index();
+
+ if (MOZ_UNLIKELY(MOZ_LOG_TEST(gPageCacheLog, LogLevel::Verbose))) {
+ MOZ_LOG(gPageCacheLog, LogLevel::Verbose,
+ ("Previous index: %d, Loaded index: %d", mPreviousEntryIndex,
+ mLoadedEntryIndex));
+ }
+ }
+
+ return rv;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetCurrentSHEntry(nsISHEntry** aEntry, bool* aOSHE) {
+ *aOSHE = false;
+ *aEntry = nullptr;
+ if (mLSHE) {
+ NS_ADDREF(*aEntry = mLSHE);
+ } else if (mOSHE) {
+ NS_ADDREF(*aEntry = mOSHE);
+ *aOSHE = true;
+ }
+ return NS_OK;
+}
+
+NS_IMETHODIMP nsDocShell::SynchronizeLayoutHistoryState() {
+ if (mActiveEntry && mActiveEntry->GetLayoutHistoryState() &&
+ mBrowsingContext) {
+ if (XRE_IsContentProcess()) {
+ dom::ContentChild* contentChild = dom::ContentChild::GetSingleton();
+ if (contentChild) {
+ contentChild->SendSynchronizeLayoutHistoryState(
+ mBrowsingContext, mActiveEntry->GetLayoutHistoryState());
+ }
+ } else {
+ SessionHistoryEntry* entry =
+ mBrowsingContext->Canonical()->GetActiveSessionHistoryEntry();
+ if (entry) {
+ entry->SetLayoutHistoryState(mActiveEntry->GetLayoutHistoryState());
+ }
+ }
+ if (mLoadingEntry &&
+ mLoadingEntry->mInfo.SharedId() == mActiveEntry->SharedId()) {
+ mLoadingEntry->mInfo.SetLayoutHistoryState(
+ mActiveEntry->GetLayoutHistoryState());
+ }
+ }
+
+ return NS_OK;
+}
+
+void nsDocShell::SetLoadGroupDefaultLoadFlags(nsLoadFlags aLoadFlags) {
+ if (mLoadGroup) {
+ mLoadGroup->SetDefaultLoadFlags(aLoadFlags);
+ } else {
+ NS_WARNING(
+ "nsDocShell::SetLoadGroupDefaultLoadFlags has no loadGroup to "
+ "propagate the mode to");
+ }
+}
+
+nsIScriptGlobalObject* nsDocShell::GetScriptGlobalObject() {
+ NS_ENSURE_SUCCESS(EnsureScriptEnvironment(), nullptr);
+ return mScriptGlobal;
+}
+
+Document* nsDocShell::GetDocument() {
+ NS_ENSURE_SUCCESS(EnsureContentViewer(), nullptr);
+ return mContentViewer->GetDocument();
+}
+
+Document* nsDocShell::GetExtantDocument() {
+ return mContentViewer ? mContentViewer->GetDocument() : nullptr;
+}
+
+nsPIDOMWindowOuter* nsDocShell::GetWindow() {
+ if (NS_FAILED(EnsureScriptEnvironment())) {
+ return nullptr;
+ }
+ return mScriptGlobal;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetDomWindow(mozIDOMWindowProxy** aWindow) {
+ NS_ENSURE_ARG_POINTER(aWindow);
+
+ nsresult rv = EnsureScriptEnvironment();
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ RefPtr<nsGlobalWindowOuter> window = mScriptGlobal;
+ window.forget(aWindow);
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetMessageManager(ContentFrameMessageManager** aMessageManager) {
+ RefPtr<ContentFrameMessageManager> mm;
+ if (RefPtr<BrowserChild> browserChild = BrowserChild::GetFrom(this)) {
+ mm = browserChild->GetMessageManager();
+ } else if (nsPIDOMWindowOuter* win = GetWindow()) {
+ mm = win->GetMessageManager();
+ }
+ mm.forget(aMessageManager);
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetIsNavigating(bool* aOut) {
+ *aOut = mIsNavigating;
+ return NS_OK;
+}
+
+void nsDocShell::ClearFrameHistory(nsISHEntry* aEntry) {
+ MOZ_ASSERT(!mozilla::SessionHistoryInParent());
+ RefPtr<ChildSHistory> rootSH = GetRootSessionHistory();
+ if (!rootSH || !aEntry) {
+ return;
+ }
+
+ rootSH->LegacySHistory()->RemoveFrameEntries(aEntry);
+}
+
+//-------------------------------------
+//-- Helper Method for Print discovery
+//-------------------------------------
+bool nsDocShell::NavigationBlockedByPrinting(bool aDisplayErrorDialog) {
+ if (!mBrowsingContext->Top()->GetIsPrinting()) {
+ return false;
+ }
+ if (aDisplayErrorDialog) {
+ DisplayLoadError(NS_ERROR_DOCUMENT_IS_PRINTMODE, nullptr, nullptr, nullptr);
+ }
+ return true;
+}
+
+bool nsDocShell::IsNavigationAllowed(bool aDisplayPrintErrorDialog,
+ bool aCheckIfUnloadFired) {
+ bool isAllowed = !NavigationBlockedByPrinting(aDisplayPrintErrorDialog) &&
+ (!aCheckIfUnloadFired || !mFiredUnloadEvent);
+ if (!isAllowed) {
+ return false;
+ }
+ if (!mContentViewer) {
+ return true;
+ }
+ bool firingBeforeUnload;
+ mContentViewer->GetBeforeUnloadFiring(&firingBeforeUnload);
+ return !firingBeforeUnload;
+}
+
+//*****************************************************************************
+// nsDocShell::nsIWebNavigation
+//*****************************************************************************
+
+NS_IMETHODIMP
+nsDocShell::GetCanGoBack(bool* aCanGoBack) {
+ *aCanGoBack = false;
+ if (!IsNavigationAllowed(false)) {
+ return NS_OK; // JS may not handle returning of an error code
+ }
+ RefPtr<ChildSHistory> rootSH = GetRootSessionHistory();
+ if (rootSH) {
+ *aCanGoBack = rootSH->CanGo(-1);
+ MOZ_LOG(gSHLog, LogLevel::Verbose,
+ ("nsDocShell %p CanGoBack()->%d", this, *aCanGoBack));
+
+ return NS_OK;
+ }
+ return NS_ERROR_FAILURE;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetCanGoForward(bool* aCanGoForward) {
+ *aCanGoForward = false;
+ if (!IsNavigationAllowed(false)) {
+ return NS_OK; // JS may not handle returning of an error code
+ }
+ RefPtr<ChildSHistory> rootSH = GetRootSessionHistory();
+ if (rootSH) {
+ *aCanGoForward = rootSH->CanGo(1);
+ MOZ_LOG(gSHLog, LogLevel::Verbose,
+ ("nsDocShell %p CanGoForward()->%d", this, *aCanGoForward));
+ return NS_OK;
+ }
+ return NS_ERROR_FAILURE;
+}
+
+NS_IMETHODIMP
+nsDocShell::GoBack(bool aRequireUserInteraction, bool aUserActivation) {
+ if (!IsNavigationAllowed()) {
+ return NS_OK; // JS may not handle returning of an error code
+ }
+
+ auto cleanupIsNavigating = MakeScopeExit([&]() { mIsNavigating = false; });
+ mIsNavigating = true;
+
+ RefPtr<ChildSHistory> rootSH = GetRootSessionHistory();
+ NS_ENSURE_TRUE(rootSH, NS_ERROR_FAILURE);
+ ErrorResult rv;
+ rootSH->Go(-1, aRequireUserInteraction, aUserActivation, rv);
+ return rv.StealNSResult();
+}
+
+NS_IMETHODIMP
+nsDocShell::GoForward(bool aRequireUserInteraction, bool aUserActivation) {
+ if (!IsNavigationAllowed()) {
+ return NS_OK; // JS may not handle returning of an error code
+ }
+
+ auto cleanupIsNavigating = MakeScopeExit([&]() { mIsNavigating = false; });
+ mIsNavigating = true;
+
+ RefPtr<ChildSHistory> rootSH = GetRootSessionHistory();
+ NS_ENSURE_TRUE(rootSH, NS_ERROR_FAILURE);
+ ErrorResult rv;
+ rootSH->Go(1, aRequireUserInteraction, aUserActivation, rv);
+ return rv.StealNSResult();
+}
+
+// XXX(nika): We may want to stop exposing this API in the child process? Going
+// to a specific index from multiple different processes could definitely race.
+NS_IMETHODIMP
+nsDocShell::GotoIndex(int32_t aIndex, bool aUserActivation) {
+ if (!IsNavigationAllowed()) {
+ return NS_OK; // JS may not handle returning of an error code
+ }
+
+ auto cleanupIsNavigating = MakeScopeExit([&]() { mIsNavigating = false; });
+ mIsNavigating = true;
+
+ RefPtr<ChildSHistory> rootSH = GetRootSessionHistory();
+ NS_ENSURE_TRUE(rootSH, NS_ERROR_FAILURE);
+
+ ErrorResult rv;
+ rootSH->GotoIndex(aIndex, aIndex - rootSH->Index(), false, aUserActivation,
+ rv);
+ return rv.StealNSResult();
+}
+
+nsresult nsDocShell::LoadURI(nsIURI* aURI,
+ const LoadURIOptions& aLoadURIOptions) {
+ if (!IsNavigationAllowed()) {
+ return NS_OK; // JS may not handle returning of an error code
+ }
+ RefPtr<nsDocShellLoadState> loadState;
+ nsresult rv = nsDocShellLoadState::CreateFromLoadURIOptions(
+ mBrowsingContext, aURI, aLoadURIOptions, getter_AddRefs(loadState));
+ MOZ_ASSERT(rv != NS_ERROR_MALFORMED_URI);
+ if (NS_FAILED(rv) || !loadState) {
+ return NS_ERROR_FAILURE;
+ }
+
+ return LoadURI(loadState, true);
+}
+
+NS_IMETHODIMP
+nsDocShell::LoadURIFromScript(nsIURI* aURI,
+ JS::Handle<JS::Value> aLoadURIOptions,
+ JSContext* aCx) {
+ // generate dictionary for aLoadURIOptions and forward call
+ LoadURIOptions loadURIOptions;
+ if (!loadURIOptions.Init(aCx, aLoadURIOptions)) {
+ return NS_ERROR_INVALID_ARG;
+ }
+ return LoadURI(aURI, loadURIOptions);
+}
+
+nsresult nsDocShell::FixupAndLoadURIString(
+ const nsAString& aURIString, const LoadURIOptions& aLoadURIOptions) {
+ if (!IsNavigationAllowed()) {
+ return NS_OK; // JS may not handle returning of an error code
+ }
+
+ RefPtr<nsDocShellLoadState> loadState;
+ nsresult rv = nsDocShellLoadState::CreateFromLoadURIOptions(
+ mBrowsingContext, aURIString, aLoadURIOptions, getter_AddRefs(loadState));
+
+ uint32_t loadFlags = aLoadURIOptions.mLoadFlags;
+ if (NS_ERROR_MALFORMED_URI == rv) {
+ MOZ_LOG(gSHLog, LogLevel::Debug,
+ ("Creating an active entry on nsDocShell %p to %s (because "
+ "we're showing an error page)",
+ this, NS_ConvertUTF16toUTF8(aURIString).get()));
+
+ // We need to store a session history entry. We don't have a valid URI, so
+ // we use about:blank instead.
+ nsCOMPtr<nsIURI> uri;
+ MOZ_ALWAYS_SUCCEEDS(NS_NewURI(getter_AddRefs(uri), "about:blank"_ns));
+ nsCOMPtr<nsIPrincipal> triggeringPrincipal;
+ if (aLoadURIOptions.mTriggeringPrincipal) {
+ triggeringPrincipal = aLoadURIOptions.mTriggeringPrincipal;
+ } else {
+ triggeringPrincipal = nsContentUtils::GetSystemPrincipal();
+ }
+ if (mozilla::SessionHistoryInParent()) {
+ mActiveEntry = MakeUnique<SessionHistoryInfo>(
+ uri, triggeringPrincipal, nullptr, nullptr, nullptr,
+ nsLiteralCString("text/html"));
+ mBrowsingContext->SetActiveSessionHistoryEntry(
+ Nothing(), mActiveEntry.get(), MAKE_LOAD_TYPE(LOAD_NORMAL, loadFlags),
+ /* aUpdatedCacheKey = */ 0);
+ }
+ if (DisplayLoadError(rv, nullptr, PromiseFlatString(aURIString).get(),
+ nullptr) &&
+ (loadFlags & LOAD_FLAGS_ERROR_LOAD_CHANGES_RV) != 0) {
+ return NS_ERROR_LOAD_SHOWED_ERRORPAGE;
+ }
+ }
+
+ if (NS_FAILED(rv) || !loadState) {
+ return NS_ERROR_FAILURE;
+ }
+
+ return LoadURI(loadState, true);
+}
+
+NS_IMETHODIMP
+nsDocShell::FixupAndLoadURIStringFromScript(
+ const nsAString& aURIString, JS::Handle<JS::Value> aLoadURIOptions,
+ JSContext* aCx) {
+ // generate dictionary for aLoadURIOptions and forward call
+ LoadURIOptions loadURIOptions;
+ if (!loadURIOptions.Init(aCx, aLoadURIOptions)) {
+ return NS_ERROR_INVALID_ARG;
+ }
+ return FixupAndLoadURIString(aURIString, loadURIOptions);
+}
+
+void nsDocShell::UnblockEmbedderLoadEventForFailure(bool aFireFrameErrorEvent) {
+ // If we're not in a content frame, or are at a BrowsingContext tree boundary,
+ // such as the content-chrome boundary, don't fire the error event.
+ if (mBrowsingContext->IsTopContent() || mBrowsingContext->IsChrome()) {
+ return;
+ }
+
+ // If embedder is same-process, then unblocking the load event is already
+ // handled by nsDocLoader. Fire the error event on our embedder element if
+ // requested.
+ //
+ // XXX: Bug 1440212 is looking into potentially changing this behaviour to act
+ // more like the remote case when in-process.
+ RefPtr<Element> element = mBrowsingContext->GetEmbedderElement();
+ if (element) {
+ if (aFireFrameErrorEvent) {
+ if (RefPtr<nsFrameLoaderOwner> flo = do_QueryObject(element)) {
+ if (RefPtr<nsFrameLoader> fl = flo->GetFrameLoader()) {
+ fl->FireErrorEvent();
+ }
+ }
+ }
+ return;
+ }
+
+ // If we have a cross-process parent document, we must notify it that we no
+ // longer block its load event. This is necessary for OOP sub-documents
+ // because error documents do not result in a call to
+ // SendMaybeFireEmbedderLoadEvents via any of the normal call paths.
+ // (Obviously, we must do this before any of the returns below.)
+ RefPtr<BrowserChild> browserChild = BrowserChild::GetFrom(this);
+ if (browserChild) {
+ mozilla::Unused << browserChild->SendMaybeFireEmbedderLoadEvents(
+ aFireFrameErrorEvent ? EmbedderElementEventType::ErrorEvent
+ : EmbedderElementEventType::NoEvent);
+ }
+}
+
+NS_IMETHODIMP
+nsDocShell::DisplayLoadError(nsresult aError, nsIURI* aURI,
+ const char16_t* aURL, nsIChannel* aFailedChannel,
+ bool* aDisplayedErrorPage) {
+ MOZ_LOG(gDocShellLeakLog, LogLevel::Debug,
+ ("DOCSHELL %p DisplayLoadError %s\n", this,
+ aURI ? aURI->GetSpecOrDefault().get() : ""));
+
+ *aDisplayedErrorPage = false;
+ // Get prompt and string bundle services
+ nsCOMPtr<nsIPrompt> prompter;
+ nsCOMPtr<nsIStringBundle> stringBundle;
+ GetPromptAndStringBundle(getter_AddRefs(prompter),
+ getter_AddRefs(stringBundle));
+
+ NS_ENSURE_TRUE(stringBundle, NS_ERROR_FAILURE);
+ NS_ENSURE_TRUE(prompter, NS_ERROR_FAILURE);
+
+ const char* error = nullptr;
+ // The key used to select the appropriate error message from the properties
+ // file.
+ const char* errorDescriptionID = nullptr;
+ AutoTArray<nsString, 3> formatStrs;
+ bool addHostPort = false;
+ bool isBadStsCertError = false;
+ nsresult rv = NS_OK;
+ nsAutoString messageStr;
+ nsAutoCString cssClass;
+ nsAutoCString errorPage;
+
+ errorPage.AssignLiteral("neterror");
+
+ // Turn the error code into a human readable error message.
+ if (NS_ERROR_UNKNOWN_PROTOCOL == aError) {
+ NS_ENSURE_ARG_POINTER(aURI);
+
+ // Extract the schemes into a comma delimited list.
+ nsAutoCString scheme;
+ aURI->GetScheme(scheme);
+ CopyASCIItoUTF16(scheme, *formatStrs.AppendElement());
+ nsCOMPtr<nsINestedURI> nestedURI = do_QueryInterface(aURI);
+ while (nestedURI) {
+ nsCOMPtr<nsIURI> tempURI;
+ nsresult rv2;
+ rv2 = nestedURI->GetInnerURI(getter_AddRefs(tempURI));
+ if (NS_SUCCEEDED(rv2) && tempURI) {
+ tempURI->GetScheme(scheme);
+ formatStrs[0].AppendLiteral(", ");
+ AppendASCIItoUTF16(scheme, formatStrs[0]);
+ }
+ nestedURI = do_QueryInterface(tempURI);
+ }
+ error = "unknownProtocolFound";
+ } else if (NS_ERROR_FILE_NOT_FOUND == aError) {
+ NS_ENSURE_ARG_POINTER(aURI);
+ error = "fileNotFound";
+ } else if (NS_ERROR_FILE_ACCESS_DENIED == aError) {
+ NS_ENSURE_ARG_POINTER(aURI);
+ error = "fileAccessDenied";
+ } else if (NS_ERROR_UNKNOWN_HOST == aError) {
+ NS_ENSURE_ARG_POINTER(aURI);
+ // Get the host
+ nsAutoCString host;
+ nsCOMPtr<nsIURI> innermostURI = NS_GetInnermostURI(aURI);
+ innermostURI->GetHost(host);
+ CopyUTF8toUTF16(host, *formatStrs.AppendElement());
+ errorDescriptionID = "dnsNotFound2";
+ error = "dnsNotFound";
+ } else if (NS_ERROR_CONNECTION_REFUSED == aError ||
+ NS_ERROR_PROXY_BAD_GATEWAY == aError) {
+ NS_ENSURE_ARG_POINTER(aURI);
+ addHostPort = true;
+ error = "connectionFailure";
+ } else if (NS_ERROR_NET_INTERRUPT == aError) {
+ NS_ENSURE_ARG_POINTER(aURI);
+ addHostPort = true;
+ error = "netInterrupt";
+ } else if (NS_ERROR_NET_TIMEOUT == aError ||
+ NS_ERROR_PROXY_GATEWAY_TIMEOUT == aError ||
+ NS_ERROR_NET_TIMEOUT_EXTERNAL == aError) {
+ NS_ENSURE_ARG_POINTER(aURI);
+ // Get the host
+ nsAutoCString host;
+ aURI->GetHost(host);
+ CopyUTF8toUTF16(host, *formatStrs.AppendElement());
+ error = "netTimeout";
+ } else if (NS_ERROR_CSP_FRAME_ANCESTOR_VIOLATION == aError ||
+ NS_ERROR_CSP_FORM_ACTION_VIOLATION == aError ||
+ NS_ERROR_CSP_NAVIGATE_TO_VIOLATION == aError) {
+ // CSP error
+ cssClass.AssignLiteral("neterror");
+ error = "cspBlocked";
+ } else if (NS_ERROR_XFO_VIOLATION == aError) {
+ // XFO error
+ cssClass.AssignLiteral("neterror");
+ error = "xfoBlocked";
+ } else if (NS_ERROR_GET_MODULE(aError) == NS_ERROR_MODULE_SECURITY) {
+ nsCOMPtr<nsINSSErrorsService> nsserr =
+ do_GetService(NS_NSS_ERRORS_SERVICE_CONTRACTID);
+
+ uint32_t errorClass;
+ if (!nsserr || NS_FAILED(nsserr->GetErrorClass(aError, &errorClass))) {
+ errorClass = nsINSSErrorsService::ERROR_CLASS_SSL_PROTOCOL;
+ }
+
+ nsCOMPtr<nsITransportSecurityInfo> tsi;
+ if (aFailedChannel) {
+ aFailedChannel->GetSecurityInfo(getter_AddRefs(tsi));
+ }
+ if (tsi) {
+ uint32_t securityState;
+ tsi->GetSecurityState(&securityState);
+ if (securityState & nsIWebProgressListener::STATE_USES_SSL_3) {
+ error = "sslv3Used";
+ addHostPort = true;
+ } else if (securityState &
+ nsIWebProgressListener::STATE_USES_WEAK_CRYPTO) {
+ error = "weakCryptoUsed";
+ addHostPort = true;
+ }
+ } else {
+ // No channel, let's obtain the generic error message
+ if (nsserr) {
+ nsserr->GetErrorMessage(aError, messageStr);
+ }
+ }
+ // We don't have a message string here anymore but DisplayLoadError
+ // requires a non-empty messageStr.
+ messageStr.Truncate();
+ messageStr.AssignLiteral(u" ");
+ if (errorClass == nsINSSErrorsService::ERROR_CLASS_BAD_CERT) {
+ error = "nssBadCert";
+
+ // If this is an HTTP Strict Transport Security host or a pinned host
+ // and the certificate is bad, don't allow overrides (RFC 6797 section
+ // 12.1).
+ bool isStsHost = false;
+ bool isPinnedHost = false;
+ OriginAttributes attrsForHSTS;
+ if (aFailedChannel) {
+ StoragePrincipalHelper::GetOriginAttributesForHSTS(aFailedChannel,
+ attrsForHSTS);
+ } else {
+ attrsForHSTS = GetOriginAttributes();
+ }
+
+ if (XRE_IsParentProcess()) {
+ nsCOMPtr<nsISiteSecurityService> sss =
+ do_GetService(NS_SSSERVICE_CONTRACTID, &rv);
+ NS_ENSURE_SUCCESS(rv, rv);
+ rv = sss->IsSecureURI(aURI, attrsForHSTS, &isStsHost);
+ NS_ENSURE_SUCCESS(rv, rv);
+ } else {
+ mozilla::dom::ContentChild* cc =
+ mozilla::dom::ContentChild::GetSingleton();
+ cc->SendIsSecureURI(aURI, attrsForHSTS, &isStsHost);
+ }
+ nsCOMPtr<nsIPublicKeyPinningService> pkps =
+ do_GetService(NS_PKPSERVICE_CONTRACTID, &rv);
+ NS_ENSURE_SUCCESS(rv, rv);
+ rv = pkps->HostHasPins(aURI, &isPinnedHost);
+
+ if (Preferences::GetBool("browser.xul.error_pages.expert_bad_cert",
+ false)) {
+ cssClass.AssignLiteral("expertBadCert");
+ }
+
+ // HSTS/pinning takes precedence over the expert bad cert pref. We
+ // never want to show the "Add Exception" button for these sites.
+ // In the future we should differentiate between an HSTS host and a
+ // pinned host and display a more informative message to the user.
+ if (isStsHost || isPinnedHost) {
+ isBadStsCertError = true;
+ cssClass.AssignLiteral("badStsCert");
+ }
+
+ // See if an alternate cert error page is registered
+ nsAutoCString alternateErrorPage;
+ nsresult rv = Preferences::GetCString(
+ "security.alternate_certificate_error_page", alternateErrorPage);
+ if (NS_SUCCEEDED(rv)) {
+ errorPage.Assign(alternateErrorPage);
+ }
+ } else {
+ error = "nssFailure2";
+ }
+ } else if (NS_ERROR_PHISHING_URI == aError ||
+ NS_ERROR_MALWARE_URI == aError ||
+ NS_ERROR_UNWANTED_URI == aError ||
+ NS_ERROR_HARMFUL_URI == aError) {
+ nsAutoCString host;
+ aURI->GetHost(host);
+ CopyUTF8toUTF16(host, *formatStrs.AppendElement());
+
+ // Malware and phishing detectors may want to use an alternate error
+ // page, but if the pref's not set, we'll fall back on the standard page
+ nsAutoCString alternateErrorPage;
+ nsresult rv = Preferences::GetCString("urlclassifier.alternate_error_page",
+ alternateErrorPage);
+ if (NS_SUCCEEDED(rv)) {
+ errorPage.Assign(alternateErrorPage);
+ }
+
+ if (NS_ERROR_PHISHING_URI == aError) {
+ error = "deceptiveBlocked";
+ } else if (NS_ERROR_MALWARE_URI == aError) {
+ error = "malwareBlocked";
+ } else if (NS_ERROR_UNWANTED_URI == aError) {
+ error = "unwantedBlocked";
+ } else if (NS_ERROR_HARMFUL_URI == aError) {
+ error = "harmfulBlocked";
+ }
+
+ cssClass.AssignLiteral("blacklist");
+ } else if (NS_ERROR_CONTENT_CRASHED == aError) {
+ errorPage.AssignLiteral("tabcrashed");
+ error = "tabcrashed";
+
+ RefPtr<EventTarget> handler = mChromeEventHandler;
+ if (handler) {
+ nsCOMPtr<Element> element = do_QueryInterface(handler);
+ element->GetAttribute(u"crashedPageTitle"_ns, messageStr);
+ }
+
+ // DisplayLoadError requires a non-empty messageStr to proceed and call
+ // LoadErrorPage. If the page doesn't have a title, we will use a blank
+ // space which will be trimmed and thus treated as empty by the front-end.
+ if (messageStr.IsEmpty()) {
+ messageStr.AssignLiteral(u" ");
+ }
+ } else if (NS_ERROR_FRAME_CRASHED == aError) {
+ errorPage.AssignLiteral("framecrashed");
+ error = "framecrashed";
+ messageStr.AssignLiteral(u" ");
+ } else if (NS_ERROR_BUILDID_MISMATCH == aError) {
+ errorPage.AssignLiteral("restartrequired");
+ error = "restartrequired";
+
+ // DisplayLoadError requires a non-empty messageStr to proceed and call
+ // LoadErrorPage. If the page doesn't have a title, we will use a blank
+ // space which will be trimmed and thus treated as empty by the front-end.
+ if (messageStr.IsEmpty()) {
+ messageStr.AssignLiteral(u" ");
+ }
+ } else {
+ // Errors requiring simple formatting
+ switch (aError) {
+ case NS_ERROR_MALFORMED_URI:
+ // URI is malformed
+ error = "malformedURI";
+ errorDescriptionID = "malformedURI2";
+ break;
+ case NS_ERROR_REDIRECT_LOOP:
+ // Doc failed to load because the server generated too many redirects
+ error = "redirectLoop";
+ break;
+ case NS_ERROR_UNKNOWN_SOCKET_TYPE:
+ // Doc failed to load because PSM is not installed
+ error = "unknownSocketType";
+ break;
+ case NS_ERROR_NET_RESET:
+ // Doc failed to load because the server kept reseting the connection
+ // before we could read any data from it
+ error = "netReset";
+ break;
+ case NS_ERROR_DOCUMENT_NOT_CACHED:
+ // Doc failed to load because the cache does not contain a copy of
+ // the document.
+ error = "notCached";
+ break;
+ case NS_ERROR_OFFLINE:
+ // Doc failed to load because we are offline.
+ error = "netOffline";
+ break;
+ case NS_ERROR_DOCUMENT_IS_PRINTMODE:
+ // Doc navigation attempted while Printing or Print Preview
+ error = "isprinting";
+ break;
+ case NS_ERROR_PORT_ACCESS_NOT_ALLOWED:
+ // Port blocked for security reasons
+ addHostPort = true;
+ error = "deniedPortAccess";
+ break;
+ case NS_ERROR_UNKNOWN_PROXY_HOST:
+ // Proxy hostname could not be resolved.
+ error = "proxyResolveFailure";
+ break;
+ case NS_ERROR_PROXY_CONNECTION_REFUSED:
+ case NS_ERROR_PROXY_FORBIDDEN:
+ case NS_ERROR_PROXY_NOT_IMPLEMENTED:
+ case NS_ERROR_PROXY_AUTHENTICATION_FAILED:
+ case NS_ERROR_PROXY_TOO_MANY_REQUESTS:
+ // Proxy connection was refused.
+ error = "proxyConnectFailure";
+ break;
+ case NS_ERROR_INVALID_CONTENT_ENCODING:
+ // Bad Content Encoding.
+ error = "contentEncodingError";
+ break;
+ case NS_ERROR_UNSAFE_CONTENT_TYPE:
+ // Channel refused to load from an unrecognized content type.
+ error = "unsafeContentType";
+ break;
+ case NS_ERROR_CORRUPTED_CONTENT:
+ // Broken Content Detected. e.g. Content-MD5 check failure.
+ error = "corruptedContentErrorv2";
+ break;
+ case NS_ERROR_INTERCEPTION_FAILED:
+ // ServiceWorker intercepted request, but something went wrong.
+ error = "corruptedContentErrorv2";
+ break;
+ case NS_ERROR_NET_INADEQUATE_SECURITY:
+ // Server negotiated bad TLS for HTTP/2.
+ error = "inadequateSecurityError";
+ addHostPort = true;
+ break;
+ case NS_ERROR_BLOCKED_BY_POLICY:
+ case NS_ERROR_DOM_COOP_FAILED:
+ case NS_ERROR_DOM_COEP_FAILED:
+ // Page blocked by policy
+ error = "blockedByPolicy";
+ break;
+ case NS_ERROR_NET_HTTP2_SENT_GOAWAY:
+ case NS_ERROR_NET_HTTP3_PROTOCOL_ERROR:
+ // HTTP/2 or HTTP/3 stack detected a protocol error
+ error = "networkProtocolError";
+ break;
+
+ default:
+ break;
+ }
+ }
+
+ nsresult delegateErrorCode = aError;
+ // If the HTTPS-Only Mode upgraded this request and the upgrade might have
+ // caused this error, we replace the error-page with about:httpsonlyerror
+ if (nsHTTPSOnlyUtils::CouldBeHttpsOnlyError(aFailedChannel, aError)) {
+ errorPage.AssignLiteral("httpsonlyerror");
+ delegateErrorCode = NS_ERROR_HTTPS_ONLY;
+ } else if (isBadStsCertError) {
+ delegateErrorCode = NS_ERROR_BAD_HSTS_CERT;
+ }
+
+ if (nsCOMPtr<nsILoadURIDelegate> loadURIDelegate = GetLoadURIDelegate()) {
+ nsCOMPtr<nsIURI> errorPageURI;
+ rv = loadURIDelegate->HandleLoadError(
+ aURI, delegateErrorCode, NS_ERROR_GET_MODULE(delegateErrorCode),
+ getter_AddRefs(errorPageURI));
+ // If the docshell is going away there's no point in showing an error page.
+ if (NS_FAILED(rv) || mIsBeingDestroyed) {
+ *aDisplayedErrorPage = false;
+ return NS_OK;
+ }
+
+ if (errorPageURI) {
+ *aDisplayedErrorPage =
+ NS_SUCCEEDED(LoadErrorPage(errorPageURI, aURI, aFailedChannel));
+ return NS_OK;
+ }
+ }
+
+ // Test if the error should be displayed
+ if (!error) {
+ return NS_OK;
+ }
+
+ if (!errorDescriptionID) {
+ errorDescriptionID = error;
+ }
+
+ Telemetry::AccumulateCategoricalKeyed(
+ IsSubframe() ? "frame"_ns : "top"_ns,
+ mozilla::dom::LoadErrorToTelemetryLabel(aError));
+
+ // Test if the error needs to be formatted
+ if (!messageStr.IsEmpty()) {
+ // already obtained message
+ } else {
+ if (addHostPort) {
+ // Build up the host:port string.
+ nsAutoCString hostport;
+ if (aURI) {
+ aURI->GetHostPort(hostport);
+ } else {
+ hostport.Assign('?');
+ }
+ CopyUTF8toUTF16(hostport, *formatStrs.AppendElement());
+ }
+
+ nsAutoCString spec;
+ rv = NS_ERROR_NOT_AVAILABLE;
+ auto& nextFormatStr = *formatStrs.AppendElement();
+ if (aURI) {
+ // displaying "file://" is aesthetically unpleasing and could even be
+ // confusing to the user
+ if (SchemeIsFile(aURI)) {
+ aURI->GetPathQueryRef(spec);
+ } else {
+ aURI->GetSpec(spec);
+ }
+
+ nsCOMPtr<nsITextToSubURI> textToSubURI(
+ do_GetService(NS_ITEXTTOSUBURI_CONTRACTID, &rv));
+ if (NS_SUCCEEDED(rv)) {
+ rv = textToSubURI->UnEscapeURIForUI(spec, nextFormatStr);
+ }
+ } else {
+ spec.Assign('?');
+ }
+ if (NS_FAILED(rv)) {
+ CopyUTF8toUTF16(spec, nextFormatStr);
+ }
+ rv = NS_OK;
+
+ nsAutoString str;
+ rv =
+ stringBundle->FormatStringFromName(errorDescriptionID, formatStrs, str);
+ NS_ENSURE_SUCCESS(rv, rv);
+ messageStr.Assign(str);
+ }
+
+ // Display the error as a page or an alert prompt
+ NS_ENSURE_FALSE(messageStr.IsEmpty(), NS_ERROR_FAILURE);
+
+ if ((NS_ERROR_NET_INTERRUPT == aError || NS_ERROR_NET_RESET == aError) &&
+ SchemeIsHTTPS(aURI)) {
+ // Maybe TLS intolerant. Treat this as an SSL error.
+ error = "nssFailure2";
+ }
+
+ if (mBrowsingContext->GetUseErrorPages()) {
+ // Display an error page
+ nsresult loadedPage =
+ LoadErrorPage(aURI, aURL, errorPage.get(), error, messageStr.get(),
+ cssClass.get(), aFailedChannel);
+ *aDisplayedErrorPage = NS_SUCCEEDED(loadedPage);
+ } else {
+ // The prompter reqires that our private window has a document (or it
+ // asserts). Satisfy that assertion now since GetDoc will force
+ // creation of one if it hasn't already been created.
+ if (mScriptGlobal) {
+ Unused << mScriptGlobal->GetDoc();
+ }
+
+ // Display a message box
+ prompter->Alert(nullptr, messageStr.get());
+ }
+
+ return NS_OK;
+}
+
+#define PREF_SAFEBROWSING_ALLOWOVERRIDE "browser.safebrowsing.allowOverride"
+
+nsresult nsDocShell::LoadErrorPage(nsIURI* aURI, const char16_t* aURL,
+ const char* aErrorPage,
+ const char* aErrorType,
+ const char16_t* aDescription,
+ const char* aCSSClass,
+ nsIChannel* aFailedChannel) {
+ if (mIsBeingDestroyed) {
+ return NS_ERROR_NOT_AVAILABLE;
+ }
+
+#if defined(DEBUG)
+ if (MOZ_LOG_TEST(gDocShellLog, LogLevel::Debug)) {
+ nsAutoCString chanName;
+ if (aFailedChannel) {
+ aFailedChannel->GetName(chanName);
+ } else {
+ chanName.AssignLiteral("<no channel>");
+ }
+
+ MOZ_LOG(gDocShellLog, LogLevel::Debug,
+ ("nsDocShell[%p]::LoadErrorPage(\"%s\", \"%s\", {...}, [%s])\n",
+ this, aURI ? aURI->GetSpecOrDefault().get() : "",
+ NS_ConvertUTF16toUTF8(aURL).get(), chanName.get()));
+ }
+#endif
+
+ nsAutoCString url;
+ if (aURI) {
+ nsresult rv = aURI->GetSpec(url);
+ NS_ENSURE_SUCCESS(rv, rv);
+ } else if (aURL) {
+ CopyUTF16toUTF8(MakeStringSpan(aURL), url);
+ } else {
+ return NS_ERROR_INVALID_POINTER;
+ }
+
+ // Create a URL to pass all the error information through to the page.
+
+#undef SAFE_ESCAPE
+#define SAFE_ESCAPE(output, input, params) \
+ if (NS_WARN_IF(!NS_Escape(input, output, params))) { \
+ return NS_ERROR_OUT_OF_MEMORY; \
+ }
+
+ nsCString escapedUrl, escapedError, escapedDescription, escapedCSSClass;
+ SAFE_ESCAPE(escapedUrl, url, url_Path);
+ SAFE_ESCAPE(escapedError, nsDependentCString(aErrorType), url_Path);
+ SAFE_ESCAPE(escapedDescription, NS_ConvertUTF16toUTF8(aDescription),
+ url_Path);
+ if (aCSSClass) {
+ nsCString cssClass(aCSSClass);
+ SAFE_ESCAPE(escapedCSSClass, cssClass, url_Path);
+ }
+ nsCString errorPageUrl("about:");
+ errorPageUrl.AppendASCII(aErrorPage);
+ errorPageUrl.AppendLiteral("?e=");
+
+ errorPageUrl.AppendASCII(escapedError.get());
+ errorPageUrl.AppendLiteral("&u=");
+ errorPageUrl.AppendASCII(escapedUrl.get());
+ if ((strcmp(aErrorPage, "blocked") == 0) &&
+ Preferences::GetBool(PREF_SAFEBROWSING_ALLOWOVERRIDE, true)) {
+ errorPageUrl.AppendLiteral("&o=1");
+ }
+ if (!escapedCSSClass.IsEmpty()) {
+ errorPageUrl.AppendLiteral("&s=");
+ errorPageUrl.AppendASCII(escapedCSSClass.get());
+ }
+ errorPageUrl.AppendLiteral("&c=UTF-8");
+
+ nsCOMPtr<nsICaptivePortalService> cps = do_GetService(NS_CAPTIVEPORTAL_CID);
+ int32_t cpsState;
+ if (cps && NS_SUCCEEDED(cps->GetState(&cpsState)) &&
+ cpsState == nsICaptivePortalService::LOCKED_PORTAL) {
+ errorPageUrl.AppendLiteral("&captive=true");
+ }
+
+ errorPageUrl.AppendLiteral("&d=");
+ errorPageUrl.AppendASCII(escapedDescription.get());
+
+ nsCOMPtr<nsIURI> errorPageURI;
+ nsresult rv = NS_NewURI(getter_AddRefs(errorPageURI), errorPageUrl);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ return LoadErrorPage(errorPageURI, aURI, aFailedChannel);
+}
+
+nsresult nsDocShell::LoadErrorPage(nsIURI* aErrorURI, nsIURI* aFailedURI,
+ nsIChannel* aFailedChannel) {
+ mFailedChannel = aFailedChannel;
+ mFailedURI = aFailedURI;
+ mFailedLoadType = mLoadType;
+
+ if (mLSHE) {
+ // Abandon mLSHE's BFCache entry and create a new one. This way, if
+ // we go back or forward to another SHEntry with the same doc
+ // identifier, the error page won't persist.
+ mLSHE->AbandonBFCacheEntry();
+ }
+
+ RefPtr<nsDocShellLoadState> loadState = new nsDocShellLoadState(aErrorURI);
+ loadState->SetTriggeringPrincipal(nsContentUtils::GetSystemPrincipal());
+ if (mBrowsingContext) {
+ loadState->SetTriggeringSandboxFlags(mBrowsingContext->GetSandboxFlags());
+ }
+ loadState->SetLoadType(LOAD_ERROR_PAGE);
+ loadState->SetFirstParty(true);
+ loadState->SetSourceBrowsingContext(mBrowsingContext);
+ if (mozilla::SessionHistoryInParent() && mLoadingEntry) {
+ // We keep the loading entry for the load that failed here. If the user
+ // reloads we want to try to reload the original load, not the error page.
+ loadState->SetLoadingSessionHistoryInfo(
+ MakeUnique<LoadingSessionHistoryInfo>(*mLoadingEntry));
+ }
+ return InternalLoad(loadState);
+}
+
+NS_IMETHODIMP
+nsDocShell::Reload(uint32_t aReloadFlags) {
+ if (!IsNavigationAllowed()) {
+ return NS_OK; // JS may not handle returning of an error code
+ }
+
+ NS_ASSERTION(((aReloadFlags & INTERNAL_LOAD_FLAGS_LOADURI_SETUP_FLAGS) == 0),
+ "Reload command not updated to use load flags!");
+ NS_ASSERTION((aReloadFlags & EXTRA_LOAD_FLAGS) == 0,
+ "Don't pass these flags to Reload");
+
+ uint32_t loadType = MAKE_LOAD_TYPE(LOAD_RELOAD_NORMAL, aReloadFlags);
+ NS_ENSURE_TRUE(IsValidLoadType(loadType), NS_ERROR_INVALID_ARG);
+
+ // Send notifications to the HistoryListener if any, about the impending
+ // reload
+ RefPtr<ChildSHistory> rootSH = GetRootSessionHistory();
+ if (mozilla::SessionHistoryInParent()) {
+ MOZ_LOG(gSHLog, LogLevel::Debug, ("nsDocShell %p Reload", this));
+ bool forceReload = IsForceReloadType(loadType);
+ if (!XRE_IsParentProcess()) {
+ ++mPendingReloadCount;
+ RefPtr<nsDocShell> docShell(this);
+ nsCOMPtr<nsIContentViewer> cv(mContentViewer);
+ NS_ENSURE_STATE(cv);
+
+ bool okToUnload = true;
+ MOZ_TRY(cv->PermitUnload(&okToUnload));
+ if (!okToUnload) {
+ return NS_OK;
+ }
+
+ RefPtr<Document> doc(GetDocument());
+ RefPtr<BrowsingContext> browsingContext(mBrowsingContext);
+ nsCOMPtr<nsIURI> currentURI(mCurrentURI);
+ nsCOMPtr<nsIReferrerInfo> referrerInfo(mReferrerInfo);
+ RefPtr<StopDetector> stopDetector = new StopDetector();
+ nsCOMPtr<nsILoadGroup> loadGroup;
+ GetLoadGroup(getter_AddRefs(loadGroup));
+ if (loadGroup) {
+ // loadGroup may be null in theory. In that case stopDetector just
+ // doesn't do anything.
+ loadGroup->AddRequest(stopDetector, nullptr);
+ }
+
+ ContentChild::GetSingleton()->SendNotifyOnHistoryReload(
+ mBrowsingContext, forceReload,
+ [docShell, doc, loadType, browsingContext, currentURI, referrerInfo,
+ loadGroup, stopDetector](
+ std::tuple<bool, Maybe<NotNull<RefPtr<nsDocShellLoadState>>>,
+ Maybe<bool>>&& aResult) {
+ auto scopeExit = MakeScopeExit([loadGroup, stopDetector]() {
+ if (loadGroup) {
+ loadGroup->RemoveRequest(stopDetector, nullptr, NS_OK);
+ }
+ });
+
+ // Decrease mPendingReloadCount before any other early returns!
+ if (--(docShell->mPendingReloadCount) > 0) {
+ return;
+ }
+
+ if (stopDetector->Canceled()) {
+ return;
+ }
+ bool canReload;
+ Maybe<NotNull<RefPtr<nsDocShellLoadState>>> loadState;
+ Maybe<bool> reloadingActiveEntry;
+
+ std::tie(canReload, loadState, reloadingActiveEntry) = aResult;
+
+ if (!canReload) {
+ return;
+ }
+
+ if (loadState.isSome()) {
+ MOZ_LOG(
+ gSHLog, LogLevel::Debug,
+ ("nsDocShell %p Reload - LoadHistoryEntry", docShell.get()));
+ loadState.ref()->SetNotifiedBeforeUnloadListeners(true);
+ docShell->LoadHistoryEntry(loadState.ref(), loadType,
+ reloadingActiveEntry.ref());
+ } else {
+ MOZ_LOG(gSHLog, LogLevel::Debug,
+ ("nsDocShell %p ReloadDocument", docShell.get()));
+ ReloadDocument(docShell, doc, loadType, browsingContext,
+ currentURI, referrerInfo,
+ /* aNotifiedBeforeUnloadListeners */ true);
+ }
+ },
+ [](mozilla::ipc::ResponseRejectReason) {});
+ } else {
+ // Parent process
+ bool canReload = false;
+ Maybe<NotNull<RefPtr<nsDocShellLoadState>>> loadState;
+ Maybe<bool> reloadingActiveEntry;
+ if (!mBrowsingContext->IsDiscarded()) {
+ mBrowsingContext->Canonical()->NotifyOnHistoryReload(
+ forceReload, canReload, loadState, reloadingActiveEntry);
+ }
+ if (canReload) {
+ if (loadState.isSome()) {
+ MOZ_LOG(gSHLog, LogLevel::Debug,
+ ("nsDocShell %p Reload - LoadHistoryEntry", this));
+ LoadHistoryEntry(loadState.ref(), loadType,
+ reloadingActiveEntry.ref());
+ } else {
+ MOZ_LOG(gSHLog, LogLevel::Debug,
+ ("nsDocShell %p ReloadDocument", this));
+ RefPtr<Document> doc = GetDocument();
+ RefPtr<BrowsingContext> bc = mBrowsingContext;
+ nsCOMPtr<nsIURI> currentURI = mCurrentURI;
+ nsCOMPtr<nsIReferrerInfo> referrerInfo = mReferrerInfo;
+ ReloadDocument(this, doc, loadType, bc, currentURI, referrerInfo);
+ }
+ }
+ }
+ return NS_OK;
+ }
+
+ bool canReload = true;
+ if (rootSH) {
+ rootSH->LegacySHistory()->NotifyOnHistoryReload(&canReload);
+ }
+
+ if (!canReload) {
+ return NS_OK;
+ }
+
+ /* If you change this part of code, make sure bug 45297 does not re-occur */
+ if (mOSHE) {
+ nsCOMPtr<nsISHEntry> oshe = mOSHE;
+ return LoadHistoryEntry(
+ oshe, loadType,
+ aReloadFlags & nsIWebNavigation::LOAD_FLAGS_USER_ACTIVATION);
+ }
+
+ if (mLSHE) { // In case a reload happened before the current load is done
+ nsCOMPtr<nsISHEntry> lshe = mLSHE;
+ return LoadHistoryEntry(
+ lshe, loadType,
+ aReloadFlags & nsIWebNavigation::LOAD_FLAGS_USER_ACTIVATION);
+ }
+
+ RefPtr<Document> doc = GetDocument();
+ RefPtr<BrowsingContext> bc = mBrowsingContext;
+ nsCOMPtr<nsIURI> currentURI = mCurrentURI;
+ nsCOMPtr<nsIReferrerInfo> referrerInfo = mReferrerInfo;
+ return ReloadDocument(this, doc, loadType, bc, currentURI, referrerInfo);
+}
+
+/* static */
+nsresult nsDocShell::ReloadDocument(nsDocShell* aDocShell, Document* aDocument,
+ uint32_t aLoadType,
+ BrowsingContext* aBrowsingContext,
+ nsIURI* aCurrentURI,
+ nsIReferrerInfo* aReferrerInfo,
+ bool aNotifiedBeforeUnloadListeners) {
+ if (!aDocument) {
+ return NS_OK;
+ }
+
+ // Do not inherit owner from document
+ uint32_t flags = INTERNAL_LOAD_FLAGS_NONE;
+ nsAutoString srcdoc;
+ nsIURI* baseURI = nullptr;
+ nsCOMPtr<nsIURI> originalURI;
+ nsCOMPtr<nsIURI> resultPrincipalURI;
+ bool loadReplace = false;
+
+ nsIPrincipal* triggeringPrincipal = aDocument->NodePrincipal();
+ nsCOMPtr<nsIContentSecurityPolicy> csp = aDocument->GetCsp();
+ uint32_t triggeringSandboxFlags = aDocument->GetSandboxFlags();
+
+ nsAutoString contentTypeHint;
+ aDocument->GetContentType(contentTypeHint);
+
+ if (aDocument->IsSrcdocDocument()) {
+ aDocument->GetSrcdocData(srcdoc);
+ flags |= INTERNAL_LOAD_FLAGS_IS_SRCDOC;
+ baseURI = aDocument->GetBaseURI();
+ } else {
+ srcdoc = VoidString();
+ }
+ nsCOMPtr<nsIChannel> chan = aDocument->GetChannel();
+ if (chan) {
+ uint32_t loadFlags;
+ chan->GetLoadFlags(&loadFlags);
+ loadReplace = loadFlags & nsIChannel::LOAD_REPLACE;
+ nsCOMPtr<nsIHttpChannel> httpChan(do_QueryInterface(chan));
+ if (httpChan) {
+ httpChan->GetOriginalURI(getter_AddRefs(originalURI));
+ }
+
+ nsCOMPtr<nsILoadInfo> loadInfo = chan->LoadInfo();
+ loadInfo->GetResultPrincipalURI(getter_AddRefs(resultPrincipalURI));
+ }
+
+ if (!triggeringPrincipal) {
+ MOZ_ASSERT(false, "Reload needs a valid triggeringPrincipal");
+ return NS_ERROR_FAILURE;
+ }
+
+ // Stack variables to ensure changes to the member variables don't affect to
+ // the call.
+ nsCOMPtr<nsIURI> currentURI = aCurrentURI;
+
+ // Reload always rewrites result principal URI.
+ Maybe<nsCOMPtr<nsIURI>> emplacedResultPrincipalURI;
+ emplacedResultPrincipalURI.emplace(std::move(resultPrincipalURI));
+
+ RefPtr<WindowContext> context = aBrowsingContext->GetCurrentWindowContext();
+ RefPtr<nsDocShellLoadState> loadState = new nsDocShellLoadState(currentURI);
+ loadState->SetReferrerInfo(aReferrerInfo);
+ loadState->SetOriginalURI(originalURI);
+ loadState->SetMaybeResultPrincipalURI(emplacedResultPrincipalURI);
+ loadState->SetLoadReplace(loadReplace);
+ loadState->SetTriggeringPrincipal(triggeringPrincipal);
+ loadState->SetTriggeringSandboxFlags(triggeringSandboxFlags);
+ loadState->SetPrincipalToInherit(triggeringPrincipal);
+ loadState->SetCsp(csp);
+ loadState->SetInternalLoadFlags(flags);
+ loadState->SetTypeHint(NS_ConvertUTF16toUTF8(contentTypeHint));
+ loadState->SetLoadType(aLoadType);
+ loadState->SetFirstParty(true);
+ loadState->SetSrcdocData(srcdoc);
+ loadState->SetSourceBrowsingContext(aBrowsingContext);
+ loadState->SetBaseURI(baseURI);
+ loadState->SetHasValidUserGestureActivation(
+ context && context->HasValidTransientUserGestureActivation());
+ loadState->SetNotifiedBeforeUnloadListeners(aNotifiedBeforeUnloadListeners);
+ return aDocShell->InternalLoad(loadState);
+}
+
+NS_IMETHODIMP
+nsDocShell::Stop(uint32_t aStopFlags) {
+ // Revoke any pending event related to content viewer restoration
+ mRestorePresentationEvent.Revoke();
+
+ if (mLoadType == LOAD_ERROR_PAGE) {
+ if (mLSHE) {
+ // Since error page loads never unset mLSHE, do so now
+ SetHistoryEntryAndUpdateBC(Some(nullptr), Some<nsISHEntry*>(mLSHE));
+ }
+ mActiveEntryIsLoadingFromSessionHistory = false;
+
+ mFailedChannel = nullptr;
+ mFailedURI = nullptr;
+ }
+
+ if (nsIWebNavigation::STOP_CONTENT & aStopFlags) {
+ // Stop the document loading and animations
+ if (mContentViewer) {
+ nsCOMPtr<nsIContentViewer> cv = mContentViewer;
+ cv->Stop();
+ }
+ } else if (nsIWebNavigation::STOP_NETWORK & aStopFlags) {
+ // Stop the document loading only
+ if (mContentViewer) {
+ RefPtr<Document> doc = mContentViewer->GetDocument();
+ if (doc) {
+ doc->StopDocumentLoad();
+ }
+ }
+ }
+
+ if (nsIWebNavigation::STOP_NETWORK & aStopFlags) {
+ // Suspend any timers that were set for this loader. We'll clear
+ // them out for good in CreateContentViewer.
+ if (mRefreshURIList) {
+ SuspendRefreshURIs();
+ mSavedRefreshURIList.swap(mRefreshURIList);
+ mRefreshURIList = nullptr;
+ }
+
+ // XXXbz We could also pass |this| to nsIURILoader::Stop. That will
+ // just call Stop() on us as an nsIDocumentLoader... We need fewer
+ // redundant apis!
+ Stop();
+
+ // Clear out mChannelToDisconnectOnPageHide. This page won't go in the
+ // BFCache now, and the Stop above will have removed the DocumentChannel
+ // from the loadgroup.
+ mChannelToDisconnectOnPageHide = 0;
+ }
+
+ for (auto* child : mChildList.ForwardRange()) {
+ nsCOMPtr<nsIWebNavigation> shellAsNav(do_QueryObject(child));
+ if (shellAsNav) {
+ shellAsNav->Stop(aStopFlags);
+ }
+ }
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetDocument(Document** aDocument) {
+ NS_ENSURE_ARG_POINTER(aDocument);
+ NS_ENSURE_SUCCESS(EnsureContentViewer(), NS_ERROR_FAILURE);
+
+ RefPtr<Document> doc = mContentViewer->GetDocument();
+ if (!doc) {
+ return NS_ERROR_NOT_AVAILABLE;
+ }
+
+ doc.forget(aDocument);
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetCurrentURI(nsIURI** aURI) {
+ NS_ENSURE_ARG_POINTER(aURI);
+
+ nsCOMPtr<nsIURI> uri = mCurrentURI;
+ uri.forget(aURI);
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetSessionHistoryXPCOM(nsISupports** aSessionHistory) {
+ NS_ENSURE_ARG_POINTER(aSessionHistory);
+ RefPtr<ChildSHistory> shistory = GetSessionHistory();
+ shistory.forget(aSessionHistory);
+ return NS_OK;
+}
+
+//*****************************************************************************
+// nsDocShell::nsIWebPageDescriptor
+//*****************************************************************************
+
+NS_IMETHODIMP
+nsDocShell::LoadPageAsViewSource(nsIDocShell* aOtherDocShell,
+ const nsAString& aURI) {
+ if (!aOtherDocShell) {
+ return NS_ERROR_INVALID_POINTER;
+ }
+ nsCOMPtr<nsIURI> newURI;
+ nsresult rv = NS_NewURI(getter_AddRefs(newURI), aURI);
+ if (NS_FAILED(rv)) {
+ return rv;
+ }
+
+ RefPtr<nsDocShellLoadState> loadState;
+ uint32_t cacheKey;
+ auto* otherDocShell = nsDocShell::Cast(aOtherDocShell);
+ if (mozilla::SessionHistoryInParent()) {
+ loadState = new nsDocShellLoadState(newURI);
+ if (!otherDocShell->FillLoadStateFromCurrentEntry(*loadState)) {
+ return NS_ERROR_INVALID_POINTER;
+ }
+ cacheKey = otherDocShell->GetCacheKeyFromCurrentEntry().valueOr(0);
+ } else {
+ nsCOMPtr<nsISHEntry> entry;
+ bool isOriginalSHE;
+ otherDocShell->GetCurrentSHEntry(getter_AddRefs(entry), &isOriginalSHE);
+ if (!entry) {
+ return NS_ERROR_INVALID_POINTER;
+ }
+ rv = entry->CreateLoadInfo(getter_AddRefs(loadState));
+ NS_ENSURE_SUCCESS(rv, rv);
+ entry->GetCacheKey(&cacheKey);
+ loadState->SetURI(newURI);
+ loadState->SetSHEntry(nullptr);
+ }
+
+ // We're doing a load of the page, via an API that
+ // is only exposed to system code. The triggering principal for this load
+ // should be the system principal.
+ loadState->SetTriggeringPrincipal(nsContentUtils::GetSystemPrincipal());
+ loadState->SetOriginalURI(nullptr);
+ loadState->SetResultPrincipalURI(nullptr);
+
+ return InternalLoad(loadState, Some(cacheKey));
+}
+
+NS_IMETHODIMP
+nsDocShell::GetCurrentDescriptor(nsISupports** aPageDescriptor) {
+ MOZ_ASSERT(aPageDescriptor, "Null out param?");
+
+ *aPageDescriptor = nullptr;
+
+ nsISHEntry* src = mOSHE ? mOSHE : mLSHE;
+ if (src) {
+ nsCOMPtr<nsISHEntry> dest;
+
+ nsresult rv = src->Clone(getter_AddRefs(dest));
+ if (NS_FAILED(rv)) {
+ return rv;
+ }
+
+ // null out inappropriate cloned attributes...
+ dest->SetParent(nullptr);
+ dest->SetIsSubFrame(false);
+
+ return CallQueryInterface(dest, aPageDescriptor);
+ }
+
+ return NS_ERROR_NOT_AVAILABLE;
+}
+
+already_AddRefed<nsIInputStream> nsDocShell::GetPostDataFromCurrentEntry()
+ const {
+ nsCOMPtr<nsIInputStream> postData;
+ if (mozilla::SessionHistoryInParent()) {
+ if (mActiveEntry) {
+ postData = mActiveEntry->GetPostData();
+ } else if (mLoadingEntry) {
+ postData = mLoadingEntry->mInfo.GetPostData();
+ }
+ } else {
+ if (mOSHE) {
+ postData = mOSHE->GetPostData();
+ } else if (mLSHE) {
+ postData = mLSHE->GetPostData();
+ }
+ }
+
+ return postData.forget();
+}
+
+Maybe<uint32_t> nsDocShell::GetCacheKeyFromCurrentEntry() const {
+ if (mozilla::SessionHistoryInParent()) {
+ if (mActiveEntry) {
+ return Some(mActiveEntry->GetCacheKey());
+ }
+
+ if (mLoadingEntry) {
+ return Some(mLoadingEntry->mInfo.GetCacheKey());
+ }
+ } else {
+ if (mOSHE) {
+ return Some(mOSHE->GetCacheKey());
+ }
+
+ if (mLSHE) {
+ return Some(mLSHE->GetCacheKey());
+ }
+ }
+
+ return Nothing();
+}
+
+bool nsDocShell::FillLoadStateFromCurrentEntry(
+ nsDocShellLoadState& aLoadState) {
+ if (mLoadingEntry) {
+ mLoadingEntry->mInfo.FillLoadInfo(aLoadState);
+ return true;
+ }
+ if (mActiveEntry) {
+ mActiveEntry->FillLoadInfo(aLoadState);
+ return true;
+ }
+ return false;
+}
+
+//*****************************************************************************
+// nsDocShell::nsIBaseWindow
+//*****************************************************************************
+
+NS_IMETHODIMP
+nsDocShell::InitWindow(nativeWindow aParentNativeWindow,
+ nsIWidget* aParentWidget, int32_t aX, int32_t aY,
+ int32_t aWidth, int32_t aHeight) {
+ SetParentWidget(aParentWidget);
+ SetPositionAndSize(aX, aY, aWidth, aHeight, 0);
+ NS_ENSURE_TRUE(Initialize(), NS_ERROR_FAILURE);
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::Destroy() {
+ // XXX: We allow this function to be called just once. If you are going to
+ // reset new variables in this function, please make sure the variables will
+ // never be re-initialized. Adding assertions to check |mIsBeingDestroyed|
+ // in the setter functions for the variables would be enough.
+ if (mIsBeingDestroyed) {
+ return NS_ERROR_DOCSHELL_DYING;
+ }
+
+ NS_ASSERTION(mItemType == typeContent || mItemType == typeChrome,
+ "Unexpected item type in docshell");
+
+ nsCOMPtr<nsIObserverService> serv = services::GetObserverService();
+ if (serv) {
+ const char* msg = mItemType == typeContent
+ ? NS_WEBNAVIGATION_DESTROY
+ : NS_CHROME_WEBNAVIGATION_DESTROY;
+ serv->NotifyObservers(GetAsSupports(this), msg, nullptr);
+ }
+
+ mIsBeingDestroyed = true;
+
+ // Brak the cycle with the initial client, if present.
+ mInitialClientSource.reset();
+
+ // Make sure we don't record profile timeline markers anymore
+ SetRecordProfileTimelineMarkers(false);
+
+ // Make sure to blow away our mLoadingURI just in case. No loads
+ // from inside this pagehide.
+ mLoadingURI = nullptr;
+
+ // Fire unload event before we blow anything away.
+ (void)FirePageHideNotification(true);
+
+ // Clear pointers to any detached nsEditorData that's lying
+ // around in shistory entries. Breaks cycle. See bug 430921.
+ if (mOSHE) {
+ mOSHE->SetEditorData(nullptr);
+ }
+ if (mLSHE) {
+ mLSHE->SetEditorData(nullptr);
+ }
+
+ // Note: mContentListener can be null if Init() failed and we're being
+ // called from the destructor.
+ if (mContentListener) {
+ mContentListener->DropDocShellReference();
+ mContentListener->SetParentContentListener(nullptr);
+ // Note that we do NOT set mContentListener to null here; that
+ // way if someone tries to do a load in us after this point
+ // the nsDSURIContentListener will block it. All of which
+ // means that we should do this before calling Stop(), of
+ // course.
+ }
+
+ // Stop any URLs that are currently being loaded...
+ Stop(nsIWebNavigation::STOP_ALL);
+
+ mEditorData = nullptr;
+
+ // Save the state of the current document, before destroying the window.
+ // This is needed to capture the state of a frameset when the new document
+ // causes the frameset to be destroyed...
+ PersistLayoutHistoryState();
+
+ // Remove this docshell from its parent's child list
+ nsCOMPtr<nsIDocShellTreeItem> docShellParentAsItem =
+ do_QueryInterface(GetAsSupports(mParent));
+ if (docShellParentAsItem) {
+ docShellParentAsItem->RemoveChild(this);
+ }
+
+ if (mContentViewer) {
+ mContentViewer->Close(nullptr);
+ mContentViewer->Destroy();
+ mContentViewer = nullptr;
+ }
+
+ nsDocLoader::Destroy();
+
+ mParentWidget = nullptr;
+ mCurrentURI = nullptr;
+
+ if (mScriptGlobal) {
+ mScriptGlobal->DetachFromDocShell(!mWillChangeProcess);
+ mScriptGlobal = nullptr;
+ }
+
+ if (GetSessionHistory()) {
+ // We want to destroy these content viewers now rather than
+ // letting their destruction wait for the session history
+ // entries to get garbage collected. (Bug 488394)
+ GetSessionHistory()->EvictLocalContentViewers();
+ }
+
+ if (mWillChangeProcess && !mBrowsingContext->IsDiscarded()) {
+ mBrowsingContext->PrepareForProcessChange();
+ }
+
+ SetTreeOwner(nullptr);
+
+ mBrowserChild = nullptr;
+
+ mChromeEventHandler = nullptr;
+
+ // Cancel any timers that were set for this docshell; this is needed
+ // to break the cycle between us and the timers.
+ CancelRefreshURITimers();
+
+ return NS_OK;
+}
+
+double nsDocShell::GetWidgetCSSToDeviceScale() {
+ if (mParentWidget) {
+ return mParentWidget->GetDefaultScale().scale;
+ }
+ if (nsCOMPtr<nsIBaseWindow> ownerWindow = do_QueryInterface(mTreeOwner)) {
+ return ownerWindow->GetWidgetCSSToDeviceScale();
+ }
+ return 1.0;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetDevicePixelsPerDesktopPixel(double* aScale) {
+ if (mParentWidget) {
+ *aScale = mParentWidget->GetDesktopToDeviceScale().scale;
+ return NS_OK;
+ }
+
+ nsCOMPtr<nsIBaseWindow> ownerWindow(do_QueryInterface(mTreeOwner));
+ if (ownerWindow) {
+ return ownerWindow->GetDevicePixelsPerDesktopPixel(aScale);
+ }
+
+ *aScale = 1.0;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::SetPosition(int32_t aX, int32_t aY) {
+ mBounds.MoveTo(aX, aY);
+
+ if (mContentViewer) {
+ NS_ENSURE_SUCCESS(mContentViewer->Move(aX, aY), NS_ERROR_FAILURE);
+ }
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::SetPositionDesktopPix(int32_t aX, int32_t aY) {
+ nsCOMPtr<nsIBaseWindow> ownerWindow(do_QueryInterface(mTreeOwner));
+ if (ownerWindow) {
+ return ownerWindow->SetPositionDesktopPix(aX, aY);
+ }
+
+ double scale = 1.0;
+ GetDevicePixelsPerDesktopPixel(&scale);
+ return SetPosition(NSToIntRound(aX * scale), NSToIntRound(aY * scale));
+}
+
+NS_IMETHODIMP
+nsDocShell::GetPosition(int32_t* aX, int32_t* aY) {
+ return GetPositionAndSize(aX, aY, nullptr, nullptr);
+}
+
+NS_IMETHODIMP
+nsDocShell::SetSize(int32_t aWidth, int32_t aHeight, bool aRepaint) {
+ int32_t x = 0, y = 0;
+ GetPosition(&x, &y);
+ return SetPositionAndSize(x, y, aWidth, aHeight,
+ aRepaint ? nsIBaseWindow::eRepaint : 0);
+}
+
+NS_IMETHODIMP
+nsDocShell::GetSize(int32_t* aWidth, int32_t* aHeight) {
+ return GetPositionAndSize(nullptr, nullptr, aWidth, aHeight);
+}
+
+NS_IMETHODIMP
+nsDocShell::SetPositionAndSize(int32_t aX, int32_t aY, int32_t aWidth,
+ int32_t aHeight, uint32_t aFlags) {
+ mBounds.SetRect(aX, aY, aWidth, aHeight);
+
+ // Hold strong ref, since SetBounds can make us null out mContentViewer
+ nsCOMPtr<nsIContentViewer> viewer = mContentViewer;
+ if (viewer) {
+ uint32_t cvflags = (aFlags & nsIBaseWindow::eDelayResize)
+ ? nsIContentViewer::eDelayResize
+ : 0;
+ // XXX Border figured in here or is that handled elsewhere?
+ nsresult rv = viewer->SetBoundsWithFlags(mBounds, cvflags);
+ NS_ENSURE_SUCCESS(rv, NS_ERROR_FAILURE);
+ }
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetPositionAndSize(int32_t* aX, int32_t* aY, int32_t* aWidth,
+ int32_t* aHeight) {
+ if (mParentWidget) {
+ // ensure size is up-to-date if window has changed resolution
+ LayoutDeviceIntRect r = mParentWidget->GetClientBounds();
+ SetPositionAndSize(mBounds.X(), mBounds.Y(), r.Width(), r.Height(), 0);
+ }
+
+ // We should really consider just getting this information from
+ // our window instead of duplicating the storage and code...
+ if (aWidth || aHeight) {
+ // Caller wants to know our size; make sure to give them up to
+ // date information.
+ RefPtr<Document> doc(do_GetInterface(GetAsSupports(mParent)));
+ if (doc) {
+ doc->FlushPendingNotifications(FlushType::Layout);
+ }
+ }
+
+ DoGetPositionAndSize(aX, aY, aWidth, aHeight);
+ return NS_OK;
+}
+
+void nsDocShell::DoGetPositionAndSize(int32_t* aX, int32_t* aY, int32_t* aWidth,
+ int32_t* aHeight) {
+ if (aX) {
+ *aX = mBounds.X();
+ }
+ if (aY) {
+ *aY = mBounds.Y();
+ }
+ if (aWidth) {
+ *aWidth = mBounds.Width();
+ }
+ if (aHeight) {
+ *aHeight = mBounds.Height();
+ }
+}
+
+NS_IMETHODIMP
+nsDocShell::SetDimensions(DimensionRequest&& aRequest) {
+ return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetDimensions(DimensionKind aDimensionKind, int32_t* aX,
+ int32_t* aY, int32_t* aCX, int32_t* aCY) {
+ return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+nsDocShell::Repaint(bool aForce) {
+ PresShell* presShell = GetPresShell();
+ NS_ENSURE_TRUE(presShell, NS_ERROR_FAILURE);
+
+ RefPtr<nsViewManager> viewManager = presShell->GetViewManager();
+ NS_ENSURE_TRUE(viewManager, NS_ERROR_FAILURE);
+
+ viewManager->InvalidateAllViews();
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetParentWidget(nsIWidget** aParentWidget) {
+ NS_ENSURE_ARG_POINTER(aParentWidget);
+
+ *aParentWidget = mParentWidget;
+ NS_IF_ADDREF(*aParentWidget);
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::SetParentWidget(nsIWidget* aParentWidget) {
+ MOZ_ASSERT(!mIsBeingDestroyed);
+ mParentWidget = aParentWidget;
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetParentNativeWindow(nativeWindow* aParentNativeWindow) {
+ NS_ENSURE_ARG_POINTER(aParentNativeWindow);
+
+ if (mParentWidget) {
+ *aParentNativeWindow = mParentWidget->GetNativeData(NS_NATIVE_WIDGET);
+ } else {
+ *aParentNativeWindow = nullptr;
+ }
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::SetParentNativeWindow(nativeWindow aParentNativeWindow) {
+ return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetNativeHandle(nsAString& aNativeHandle) {
+ // the nativeHandle should be accessed from nsIAppWindow
+ return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetVisibility(bool* aVisibility) {
+ NS_ENSURE_ARG_POINTER(aVisibility);
+
+ *aVisibility = false;
+
+ if (!mContentViewer) {
+ return NS_OK;
+ }
+
+ PresShell* presShell = GetPresShell();
+ if (!presShell) {
+ return NS_OK;
+ }
+
+ // get the view manager
+ nsViewManager* vm = presShell->GetViewManager();
+ NS_ENSURE_TRUE(vm, NS_ERROR_FAILURE);
+
+ // get the root view
+ nsView* view = vm->GetRootView(); // views are not ref counted
+ NS_ENSURE_TRUE(view, NS_ERROR_FAILURE);
+
+ // if our root view is hidden, we are not visible
+ if (view->GetVisibility() == ViewVisibility::Hide) {
+ return NS_OK;
+ }
+
+ // otherwise, we must walk up the document and view trees checking
+ // for a hidden view, unless we're an off screen browser, which
+ // would make this test meaningless.
+
+ RefPtr<nsDocShell> docShell = this;
+ RefPtr<nsDocShell> parentItem = docShell->GetInProcessParentDocshell();
+ while (parentItem) {
+ // Null-check for crash in bug 267804
+ if (!parentItem->GetPresShell()) {
+ MOZ_ASSERT_UNREACHABLE("parent docshell has null pres shell");
+ return NS_OK;
+ }
+
+ vm = docShell->GetPresShell()->GetViewManager();
+ if (vm) {
+ view = vm->GetRootView();
+ }
+
+ if (view) {
+ view = view->GetParent(); // anonymous inner view
+ if (view) {
+ view = view->GetParent(); // subdocumentframe's view
+ }
+ }
+
+ nsIFrame* frame = view ? view->GetFrame() : nullptr;
+ if (frame && !frame->IsVisibleConsideringAncestors(
+ nsIFrame::VISIBILITY_CROSS_CHROME_CONTENT_BOUNDARY)) {
+ return NS_OK;
+ }
+
+ docShell = parentItem;
+ parentItem = docShell->GetInProcessParentDocshell();
+ }
+
+ nsCOMPtr<nsIBaseWindow> treeOwnerAsWin(do_QueryInterface(mTreeOwner));
+ if (!treeOwnerAsWin) {
+ *aVisibility = true;
+ return NS_OK;
+ }
+
+ // Check with the tree owner as well to give embedders a chance to
+ // expose visibility as well.
+ nsresult rv = treeOwnerAsWin->GetVisibility(aVisibility);
+ if (rv == NS_ERROR_NOT_IMPLEMENTED) {
+ // The tree owner had no opinion on our visibility.
+ *aVisibility = true;
+ return NS_OK;
+ }
+ return rv;
+}
+
+void nsDocShell::ActivenessMaybeChanged() {
+ const bool isActive = mBrowsingContext->IsActive();
+ if (RefPtr<PresShell> presShell = GetPresShell()) {
+ presShell->ActivenessMaybeChanged();
+ }
+
+ // Tell the window about it
+ if (mScriptGlobal) {
+ mScriptGlobal->SetIsBackground(!isActive);
+ if (RefPtr<Document> doc = mScriptGlobal->GetExtantDoc()) {
+ // Update orientation when the top-level browsing context becomes active.
+ if (isActive && mBrowsingContext->IsTop()) {
+ // We only care about the top-level browsing context.
+ auto orientation = mBrowsingContext->GetOrientationLock();
+ ScreenOrientation::UpdateActiveOrientationLock(orientation);
+ }
+
+ doc->PostVisibilityUpdateEvent();
+ }
+ }
+
+ // Tell the nsDOMNavigationTiming about it
+ RefPtr<nsDOMNavigationTiming> timing = mTiming;
+ if (!timing && mContentViewer) {
+ if (Document* doc = mContentViewer->GetDocument()) {
+ timing = doc->GetNavigationTiming();
+ }
+ }
+ if (timing) {
+ timing->NotifyDocShellStateChanged(
+ isActive ? nsDOMNavigationTiming::DocShellState::eActive
+ : nsDOMNavigationTiming::DocShellState::eInactive);
+ }
+
+ // Restart or stop meta refresh timers if necessary
+ if (mDisableMetaRefreshWhenInactive) {
+ if (isActive) {
+ ResumeRefreshURIs();
+ } else {
+ SuspendRefreshURIs();
+ }
+ }
+
+ if (InputTaskManager::CanSuspendInputEvent()) {
+ mBrowsingContext->Group()->UpdateInputTaskManagerIfNeeded(isActive);
+ }
+}
+
+NS_IMETHODIMP
+nsDocShell::SetDefaultLoadFlags(uint32_t aDefaultLoadFlags) {
+ if (!mWillChangeProcess) {
+ // Intentionally ignoring handling discarded browsing contexts.
+ Unused << mBrowsingContext->SetDefaultLoadFlags(aDefaultLoadFlags);
+ } else {
+ // Bug 1623565: DevTools tries to clean up defaultLoadFlags on
+ // shutdown. Sorry DevTools, your DocShell is in another process.
+ NS_WARNING("nsDocShell::SetDefaultLoadFlags called on Zombie DocShell");
+ }
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetDefaultLoadFlags(uint32_t* aDefaultLoadFlags) {
+ *aDefaultLoadFlags = mBrowsingContext->GetDefaultLoadFlags();
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetFailedChannel(nsIChannel** aFailedChannel) {
+ NS_ENSURE_ARG_POINTER(aFailedChannel);
+ Document* doc = GetDocument();
+ if (!doc) {
+ *aFailedChannel = nullptr;
+ return NS_OK;
+ }
+ NS_IF_ADDREF(*aFailedChannel = doc->GetFailedChannel());
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::SetVisibility(bool aVisibility) {
+ // Show()/Hide() may change mContentViewer.
+ nsCOMPtr<nsIContentViewer> cv = mContentViewer;
+ if (!cv) {
+ return NS_OK;
+ }
+ if (aVisibility) {
+ cv->Show();
+ } else {
+ cv->Hide();
+ }
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetEnabled(bool* aEnabled) {
+ NS_ENSURE_ARG_POINTER(aEnabled);
+ *aEnabled = true;
+ return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+nsDocShell::SetEnabled(bool aEnabled) { return NS_ERROR_NOT_IMPLEMENTED; }
+
+NS_IMETHODIMP
+nsDocShell::GetMainWidget(nsIWidget** aMainWidget) {
+ // We don't create our own widget, so simply return the parent one.
+ return GetParentWidget(aMainWidget);
+}
+
+NS_IMETHODIMP
+nsDocShell::GetTitle(nsAString& aTitle) {
+ aTitle = mTitle;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::SetTitle(const nsAString& aTitle) {
+ // Avoid unnecessary updates of the title if the URI and the title haven't
+ // changed.
+ if (mTitleValidForCurrentURI && mTitle == aTitle) {
+ return NS_OK;
+ }
+
+ // Store local title
+ mTitle = aTitle;
+ mTitleValidForCurrentURI = true;
+
+ // When title is set on the top object it should then be passed to the
+ // tree owner.
+ if (mBrowsingContext->IsTop()) {
+ nsCOMPtr<nsIBaseWindow> treeOwnerAsWin(do_QueryInterface(mTreeOwner));
+ if (treeOwnerAsWin) {
+ treeOwnerAsWin->SetTitle(aTitle);
+ }
+ }
+
+ if (mCurrentURI && mLoadType != LOAD_ERROR_PAGE) {
+ UpdateGlobalHistoryTitle(mCurrentURI);
+ }
+
+ // Update SessionHistory with the document's title.
+ if (mLoadType != LOAD_BYPASS_HISTORY && mLoadType != LOAD_ERROR_PAGE) {
+ SetTitleOnHistoryEntry(true);
+ }
+
+ return NS_OK;
+}
+
+void nsDocShell::SetTitleOnHistoryEntry(bool aUpdateEntryInSessionHistory) {
+ if (mOSHE) {
+ mOSHE->SetTitle(mTitle);
+ }
+
+ if (mActiveEntry && mBrowsingContext) {
+ mActiveEntry->SetTitle(mTitle);
+ if (aUpdateEntryInSessionHistory) {
+ if (XRE_IsParentProcess()) {
+ SessionHistoryEntry* entry =
+ mBrowsingContext->Canonical()->GetActiveSessionHistoryEntry();
+ if (entry) {
+ entry->SetTitle(mTitle);
+ }
+ } else {
+ mozilla::Unused
+ << ContentChild::GetSingleton()->SendSessionHistoryEntryTitle(
+ mBrowsingContext, mTitle);
+ }
+ }
+ }
+}
+
+nsPoint nsDocShell::GetCurScrollPos() {
+ nsPoint scrollPos;
+ if (nsIScrollableFrame* sf = GetRootScrollFrame()) {
+ scrollPos = sf->GetVisualViewportOffset();
+ }
+ return scrollPos;
+}
+
+nsresult nsDocShell::SetCurScrollPosEx(int32_t aCurHorizontalPos,
+ int32_t aCurVerticalPos) {
+ nsIScrollableFrame* sf = GetRootScrollFrame();
+ NS_ENSURE_TRUE(sf, NS_ERROR_FAILURE);
+
+ ScrollMode scrollMode =
+ sf->IsSmoothScroll() ? ScrollMode::SmoothMsd : ScrollMode::Instant;
+
+ nsPoint targetPos(aCurHorizontalPos, aCurVerticalPos);
+ sf->ScrollTo(targetPos, scrollMode);
+
+ // Set the visual viewport offset as well.
+
+ RefPtr<PresShell> presShell = GetPresShell();
+ NS_ENSURE_TRUE(presShell, NS_ERROR_FAILURE);
+
+ nsPresContext* presContext = presShell->GetPresContext();
+ NS_ENSURE_TRUE(presContext, NS_ERROR_FAILURE);
+
+ // Only the root content document can have a distinct visual viewport offset.
+ if (!presContext->IsRootContentDocumentCrossProcess()) {
+ return NS_OK;
+ }
+
+ // Not on a platform with a distinct visual viewport - don't bother setting
+ // the visual viewport offset.
+ if (!presShell->IsVisualViewportSizeSet()) {
+ return NS_OK;
+ }
+
+ presShell->ScrollToVisual(targetPos, layers::FrameMetrics::eMainThread,
+ scrollMode);
+
+ return NS_OK;
+}
+
+void nsDocShell::SetScrollbarPreference(mozilla::ScrollbarPreference aPref) {
+ if (mScrollbarPref == aPref) {
+ return;
+ }
+ mScrollbarPref = aPref;
+ auto* ps = GetPresShell();
+ if (!ps) {
+ return;
+ }
+ nsIFrame* scrollFrame = ps->GetRootScrollFrame();
+ if (!scrollFrame) {
+ return;
+ }
+ ps->FrameNeedsReflow(scrollFrame,
+ IntrinsicDirty::FrameAncestorsAndDescendants,
+ NS_FRAME_IS_DIRTY);
+}
+
+//*****************************************************************************
+// nsDocShell::nsIRefreshURI
+//*****************************************************************************
+
+NS_IMETHODIMP
+nsDocShell::RefreshURI(nsIURI* aURI, nsIPrincipal* aPrincipal,
+ uint32_t aDelay) {
+ MOZ_ASSERT(!mIsBeingDestroyed);
+
+ NS_ENSURE_ARG(aURI);
+
+ /* Check if Meta refresh/redirects are permitted. Some
+ * embedded applications may not want to do this.
+ * Must do this before sending out NOTIFY_REFRESH events
+ * because listeners may have side effects (e.g. displaying a
+ * button to manually trigger the refresh later).
+ */
+ bool allowRedirects = true;
+ GetAllowMetaRedirects(&allowRedirects);
+ if (!allowRedirects) {
+ return NS_OK;
+ }
+
+ // If any web progress listeners are listening for NOTIFY_REFRESH events,
+ // give them a chance to block this refresh.
+ bool sameURI;
+ nsresult rv = aURI->Equals(mCurrentURI, &sameURI);
+ if (NS_FAILED(rv)) {
+ sameURI = false;
+ }
+ if (!RefreshAttempted(this, aURI, aDelay, sameURI)) {
+ return NS_OK;
+ }
+
+ nsCOMPtr<nsITimerCallback> refreshTimer =
+ new nsRefreshTimer(this, aURI, aPrincipal, aDelay);
+
+ BusyFlags busyFlags = GetBusyFlags();
+
+ if (!mRefreshURIList) {
+ mRefreshURIList = nsArray::Create();
+ }
+
+ if (busyFlags & BUSY_FLAGS_BUSY ||
+ (!mBrowsingContext->IsActive() && mDisableMetaRefreshWhenInactive)) {
+ // We don't want to create the timer right now. Instead queue up the
+ // request and trigger the timer in EndPageLoad() or whenever we become
+ // active.
+ mRefreshURIList->AppendElement(refreshTimer);
+ } else {
+ // There is no page loading going on right now. Create the
+ // timer and fire it right away.
+ nsCOMPtr<nsPIDOMWindowOuter> win = GetWindow();
+ NS_ENSURE_TRUE(win, NS_ERROR_FAILURE);
+
+ nsCOMPtr<nsITimer> timer;
+ MOZ_TRY_VAR(timer, NS_NewTimerWithCallback(refreshTimer, aDelay,
+ nsITimer::TYPE_ONE_SHOT));
+
+ mRefreshURIList->AppendElement(timer); // owning timer ref
+ }
+ return NS_OK;
+}
+
+nsresult nsDocShell::ForceRefreshURIFromTimer(nsIURI* aURI,
+ nsIPrincipal* aPrincipal,
+ uint32_t aDelay,
+ nsITimer* aTimer) {
+ MOZ_ASSERT(aTimer, "Must have a timer here");
+
+ // Remove aTimer from mRefreshURIList if needed
+ if (mRefreshURIList) {
+ uint32_t n = 0;
+ mRefreshURIList->GetLength(&n);
+
+ for (uint32_t i = 0; i < n; ++i) {
+ nsCOMPtr<nsITimer> timer = do_QueryElementAt(mRefreshURIList, i);
+ if (timer == aTimer) {
+ mRefreshURIList->RemoveElementAt(i);
+ break;
+ }
+ }
+ }
+
+ return ForceRefreshURI(aURI, aPrincipal, aDelay);
+}
+
+NS_IMETHODIMP
+nsDocShell::ForceRefreshURI(nsIURI* aURI, nsIPrincipal* aPrincipal,
+ uint32_t aDelay) {
+ NS_ENSURE_ARG(aURI);
+
+ RefPtr<nsDocShellLoadState> loadState = new nsDocShellLoadState(aURI);
+ loadState->SetOriginalURI(mCurrentURI);
+ loadState->SetResultPrincipalURI(aURI);
+ loadState->SetResultPrincipalURIIsSome(true);
+ loadState->SetKeepResultPrincipalURIIfSet(true);
+ loadState->SetIsMetaRefresh(true);
+
+ // Set the triggering pricipal to aPrincipal if available, or current
+ // document's principal otherwise.
+ nsCOMPtr<nsIPrincipal> principal = aPrincipal;
+ RefPtr<Document> doc = GetDocument();
+ if (!principal) {
+ if (!doc) {
+ return NS_ERROR_FAILURE;
+ }
+ principal = doc->NodePrincipal();
+ }
+ loadState->SetTriggeringPrincipal(principal);
+ if (doc) {
+ loadState->SetCsp(doc->GetCsp());
+ loadState->SetHasValidUserGestureActivation(
+ doc->HasValidTransientUserGestureActivation());
+ loadState->SetTriggeringSandboxFlags(doc->GetSandboxFlags());
+ }
+
+ loadState->SetPrincipalIsExplicit(true);
+
+ /* Check if this META refresh causes a redirection
+ * to another site.
+ */
+ bool equalUri = false;
+ nsresult rv = aURI->Equals(mCurrentURI, &equalUri);
+
+ nsCOMPtr<nsIReferrerInfo> referrerInfo;
+ if (NS_SUCCEEDED(rv) && !equalUri && aDelay <= REFRESH_REDIRECT_TIMER) {
+ /* It is a META refresh based redirection within the threshold time
+ * we have in mind (15000 ms as defined by REFRESH_REDIRECT_TIMER).
+ * Pass a REPLACE flag to LoadURI().
+ */
+ loadState->SetLoadType(LOAD_REFRESH_REPLACE);
+
+ /* For redirects we mimic HTTP, which passes the
+ * original referrer.
+ * We will pass in referrer but will not send to server
+ */
+ if (mReferrerInfo) {
+ referrerInfo = static_cast<ReferrerInfo*>(mReferrerInfo.get())
+ ->CloneWithNewSendReferrer(false);
+ }
+ } else {
+ loadState->SetLoadType(LOAD_REFRESH);
+ /* We do need to pass in a referrer, but we don't want it to
+ * be sent to the server.
+ * For most refreshes the current URI is an appropriate
+ * internal referrer.
+ */
+ referrerInfo = new ReferrerInfo(mCurrentURI, ReferrerPolicy::_empty, false);
+ }
+
+ loadState->SetReferrerInfo(referrerInfo);
+ loadState->SetLoadFlags(
+ nsIWebNavigation::LOAD_FLAGS_DISALLOW_INHERIT_PRINCIPAL);
+ loadState->SetFirstParty(true);
+
+ /*
+ * LoadURI(...) will cancel all refresh timers... This causes the
+ * Timer and its refreshData instance to be released...
+ */
+ LoadURI(loadState, false);
+
+ return NS_OK;
+}
+
+static const char16_t* SkipASCIIWhitespace(const char16_t* aStart,
+ const char16_t* aEnd) {
+ const char16_t* iter = aStart;
+ while (iter != aEnd && mozilla::IsAsciiWhitespace(*iter)) {
+ ++iter;
+ }
+ return iter;
+}
+
+static std::tuple<const char16_t*, const char16_t*> ExtractURLString(
+ const char16_t* aPosition, const char16_t* aEnd) {
+ MOZ_ASSERT(aPosition != aEnd);
+
+ // 1. Let urlString be the substring of input from the code point at
+ // position to the end of the string.
+ const char16_t* urlStart = aPosition;
+ const char16_t* urlEnd = aEnd;
+
+ // 2. If the code point in input pointed to by position is U+0055 (U) or
+ // U+0075 (u), then advance position to the next code point.
+ // Otherwise, jump to the step labeled skip quotes.
+ if (*aPosition == 'U' || *aPosition == 'u') {
+ ++aPosition;
+
+ // 3. If the code point in input pointed to by position is U+0052 (R) or
+ // U+0072 (r), then advance position to the next code point.
+ // Otherwise, jump to the step labeled parse.
+ if (aPosition == aEnd || (*aPosition != 'R' && *aPosition != 'r')) {
+ return std::make_tuple(urlStart, urlEnd);
+ }
+
+ ++aPosition;
+
+ // 4. If the code point in input pointed to by position is U+004C (L) or
+ // U+006C (l), then advance position to the next code point.
+ // Otherwise, jump to the step labeled parse.
+ if (aPosition == aEnd || (*aPosition != 'L' && *aPosition != 'l')) {
+ return std::make_tuple(urlStart, urlEnd);
+ }
+
+ ++aPosition;
+
+ // 5. Skip ASCII whitespace within input given position.
+ aPosition = SkipASCIIWhitespace(aPosition, aEnd);
+
+ // 6. If the code point in input pointed to by position is U+003D (=),
+ // then advance position to the next code point. Otherwise, jump to
+ // the step labeled parse.
+ if (aPosition == aEnd || *aPosition != '=') {
+ return std::make_tuple(urlStart, urlEnd);
+ }
+
+ ++aPosition;
+
+ // 7. Skip ASCII whitespace within input given position.
+ aPosition = SkipASCIIWhitespace(aPosition, aEnd);
+ }
+
+ // 8. Skip quotes: If the code point in input pointed to by position is
+ // U+0027 (') or U+0022 ("), then let quote be that code point, and
+ // advance position to the next code point. Otherwise, let quote be
+ // the empty string.
+ Maybe<char> quote;
+ if (aPosition != aEnd && (*aPosition == '\'' || *aPosition == '"')) {
+ quote.emplace(*aPosition);
+ ++aPosition;
+ }
+
+ // 9. Set urlString to the substring of input from the code point at
+ // position to the end of the string.
+ urlStart = aPosition;
+ urlEnd = aEnd;
+
+ // 10. If quote is not the empty string, and there is a code point in
+ // urlString equal to quote, then truncate urlString at that code
+ // point, so that it and all subsequent code points are removed.
+ const char16_t* quotePos;
+ if (quote.isSome() &&
+ (quotePos = nsCharTraits<char16_t>::find(
+ urlStart, std::distance(urlStart, aEnd), quote.value()))) {
+ urlEnd = quotePos;
+ }
+
+ return std::make_tuple(urlStart, urlEnd);
+}
+
+void nsDocShell::SetupRefreshURIFromHeader(Document* aDocument,
+ const nsAString& aHeader) {
+ if (mIsBeingDestroyed) {
+ return;
+ }
+
+ const char16_t* position = aHeader.BeginReading();
+ const char16_t* end = aHeader.EndReading();
+
+ // See
+ // https://html.spec.whatwg.org/#pragma-directives:shared-declarative-refresh-steps.
+
+ // 3. Skip ASCII whitespace
+ position = SkipASCIIWhitespace(position, end);
+
+ // 4. Let time be 0.
+ CheckedInt<uint32_t> milliSeconds;
+
+ // 5. Collect a sequence of code points that are ASCII digits
+ const char16_t* digitsStart = position;
+ while (position != end && mozilla::IsAsciiDigit(*position)) {
+ ++position;
+ }
+
+ if (position == digitsStart) {
+ // 6. If timeString is the empty string, then:
+ // 1. If the code point in input pointed to by position is not U+002E
+ // (.), then return.
+ if (position == end || *position != '.') {
+ return;
+ }
+ } else {
+ // 7. Otherwise, set time to the result of parsing timeString using the
+ // rules for parsing non-negative integers.
+ nsContentUtils::ParseHTMLIntegerResultFlags result;
+ uint32_t seconds =
+ nsContentUtils::ParseHTMLInteger(digitsStart, position, &result);
+ MOZ_ASSERT(!(result & nsContentUtils::eParseHTMLInteger_Negative));
+ if (result & nsContentUtils::eParseHTMLInteger_Error) {
+ // The spec assumes no errors here (since we only pass ASCII digits in),
+ // but we can still overflow, so this block should deal with that (and
+ // only that).
+ MOZ_ASSERT(!(result & nsContentUtils::eParseHTMLInteger_ErrorOverflow));
+ return;
+ }
+ MOZ_ASSERT(
+ !(result & nsContentUtils::eParseHTMLInteger_DidNotConsumeAllInput));
+
+ milliSeconds = seconds;
+ milliSeconds *= 1000;
+ if (!milliSeconds.isValid()) {
+ return;
+ }
+ }
+
+ // 8. Collect a sequence of code points that are ASCII digits and U+002E FULL
+ // STOP characters (.) from input given position. Ignore any collected
+ // characters.
+ while (position != end &&
+ (mozilla::IsAsciiDigit(*position) || *position == '.')) {
+ ++position;
+ }
+
+ // 9. Let urlRecord be document's URL.
+ nsCOMPtr<nsIURI> urlRecord(aDocument->GetDocumentURI());
+
+ // 10. If position is not past the end of input
+ if (position != end) {
+ // 1. If the code point in input pointed to by position is not U+003B (;),
+ // U+002C (,), or ASCII whitespace, then return.
+ if (*position != ';' && *position != ',' &&
+ !mozilla::IsAsciiWhitespace(*position)) {
+ return;
+ }
+
+ // 2. Skip ASCII whitespace within input given position.
+ position = SkipASCIIWhitespace(position, end);
+
+ // 3. If the code point in input pointed to by position is U+003B (;) or
+ // U+002C (,), then advance position to the next code point.
+ if (position != end && (*position == ';' || *position == ',')) {
+ ++position;
+
+ // 4. Skip ASCII whitespace within input given position.
+ position = SkipASCIIWhitespace(position, end);
+ }
+
+ // 11. If position is not past the end of input, then:
+ if (position != end) {
+ const char16_t* urlStart;
+ const char16_t* urlEnd;
+
+ // 1-10. See ExtractURLString.
+ std::tie(urlStart, urlEnd) = ExtractURLString(position, end);
+
+ // 11. Parse: Parse urlString relative to document. If that fails, return.
+ // Otherwise, set urlRecord to the resulting URL record.
+ nsresult rv =
+ NS_NewURI(getter_AddRefs(urlRecord),
+ Substring(urlStart, std::distance(urlStart, urlEnd)),
+ /* charset = */ nullptr, aDocument->GetDocBaseURI());
+ NS_ENSURE_SUCCESS_VOID(rv);
+ }
+ }
+
+ nsIPrincipal* principal = aDocument->NodePrincipal();
+ nsCOMPtr<nsIScriptSecurityManager> securityManager =
+ nsContentUtils::GetSecurityManager();
+ nsresult rv = securityManager->CheckLoadURIWithPrincipal(
+ principal, urlRecord,
+ nsIScriptSecurityManager::LOAD_IS_AUTOMATIC_DOCUMENT_REPLACEMENT,
+ aDocument->InnerWindowID());
+ NS_ENSURE_SUCCESS_VOID(rv);
+
+ bool isjs = true;
+ rv = NS_URIChainHasFlags(
+ urlRecord, nsIProtocolHandler::URI_OPENING_EXECUTES_SCRIPT, &isjs);
+ NS_ENSURE_SUCCESS_VOID(rv);
+
+ if (isjs) {
+ return;
+ }
+
+ RefreshURI(urlRecord, principal, milliSeconds.value());
+}
+
+static void DoCancelRefreshURITimers(nsIMutableArray* aTimerList) {
+ if (!aTimerList) {
+ return;
+ }
+
+ uint32_t n = 0;
+ aTimerList->GetLength(&n);
+
+ while (n) {
+ nsCOMPtr<nsITimer> timer(do_QueryElementAt(aTimerList, --n));
+
+ aTimerList->RemoveElementAt(n); // bye bye owning timer ref
+
+ if (timer) {
+ timer->Cancel();
+ }
+ }
+}
+
+NS_IMETHODIMP
+nsDocShell::CancelRefreshURITimers() {
+ DoCancelRefreshURITimers(mRefreshURIList);
+ DoCancelRefreshURITimers(mSavedRefreshURIList);
+ DoCancelRefreshURITimers(mBFCachedRefreshURIList);
+ mRefreshURIList = nullptr;
+ mSavedRefreshURIList = nullptr;
+ mBFCachedRefreshURIList = nullptr;
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetRefreshPending(bool* aResult) {
+ if (!mRefreshURIList) {
+ *aResult = false;
+ return NS_OK;
+ }
+
+ uint32_t count;
+ nsresult rv = mRefreshURIList->GetLength(&count);
+ if (NS_SUCCEEDED(rv)) {
+ *aResult = (count != 0);
+ }
+ return rv;
+}
+
+void nsDocShell::RefreshURIToQueue() {
+ if (mRefreshURIList) {
+ uint32_t n = 0;
+ mRefreshURIList->GetLength(&n);
+
+ for (uint32_t i = 0; i < n; ++i) {
+ nsCOMPtr<nsITimer> timer = do_QueryElementAt(mRefreshURIList, i);
+ if (!timer) {
+ continue; // this must be a nsRefreshURI already
+ }
+
+ // Replace this timer object with a nsRefreshTimer object.
+ nsCOMPtr<nsITimerCallback> callback;
+ timer->GetCallback(getter_AddRefs(callback));
+
+ timer->Cancel();
+
+ mRefreshURIList->ReplaceElementAt(callback, i);
+ }
+ }
+}
+
+NS_IMETHODIMP
+nsDocShell::SuspendRefreshURIs() {
+ RefreshURIToQueue();
+
+ // Suspend refresh URIs for our child shells as well.
+ for (auto* child : mChildList.ForwardRange()) {
+ nsCOMPtr<nsIDocShell> shell = do_QueryObject(child);
+ if (shell) {
+ shell->SuspendRefreshURIs();
+ }
+ }
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::ResumeRefreshURIs() {
+ RefreshURIFromQueue();
+
+ // Resume refresh URIs for our child shells as well.
+ for (auto* child : mChildList.ForwardRange()) {
+ nsCOMPtr<nsIDocShell> shell = do_QueryObject(child);
+ if (shell) {
+ shell->ResumeRefreshURIs();
+ }
+ }
+
+ return NS_OK;
+}
+
+nsresult nsDocShell::RefreshURIFromQueue() {
+ if (!mRefreshURIList) {
+ return NS_OK;
+ }
+ uint32_t n = 0;
+ mRefreshURIList->GetLength(&n);
+
+ while (n) {
+ nsCOMPtr<nsITimerCallback> refreshInfo =
+ do_QueryElementAt(mRefreshURIList, --n);
+
+ if (refreshInfo) {
+ // This is the nsRefreshTimer object, waiting to be
+ // setup in a timer object and fired.
+ // Create the timer and trigger it.
+ uint32_t delay = static_cast<nsRefreshTimer*>(
+ static_cast<nsITimerCallback*>(refreshInfo))
+ ->GetDelay();
+ nsCOMPtr<nsPIDOMWindowOuter> win = GetWindow();
+ if (win) {
+ nsCOMPtr<nsITimer> timer;
+ NS_NewTimerWithCallback(getter_AddRefs(timer), refreshInfo, delay,
+ nsITimer::TYPE_ONE_SHOT);
+
+ if (timer) {
+ // Replace the nsRefreshTimer element in the queue with
+ // its corresponding timer object, so that in case another
+ // load comes through before the timer can go off, the timer will
+ // get cancelled in CancelRefreshURITimer()
+ mRefreshURIList->ReplaceElementAt(timer, n);
+ }
+ }
+ }
+ }
+
+ return NS_OK;
+}
+
+static bool IsFollowupPartOfMultipart(nsIRequest* aRequest) {
+ nsCOMPtr<nsIMultiPartChannel> multiPartChannel = do_QueryInterface(aRequest);
+ bool firstPart = false;
+ return multiPartChannel &&
+ NS_SUCCEEDED(multiPartChannel->GetIsFirstPart(&firstPart)) &&
+ !firstPart;
+}
+
+nsresult nsDocShell::Embed(nsIContentViewer* aContentViewer,
+ WindowGlobalChild* aWindowActor,
+ bool aIsTransientAboutBlank, bool aPersist,
+ nsIRequest* aRequest, nsIURI* aPreviousURI) {
+ // Save the LayoutHistoryState of the previous document, before
+ // setting up new document
+ PersistLayoutHistoryState();
+
+ nsresult rv = SetupNewViewer(aContentViewer, aWindowActor);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ // XXX What if SetupNewViewer fails?
+ if (mozilla::SessionHistoryInParent() ? !!mLoadingEntry : !!mLSHE) {
+ // Set history.state
+ SetDocCurrentStateObj(mLSHE,
+ mLoadingEntry ? &mLoadingEntry->mInfo : nullptr);
+ }
+
+ if (mLSHE) {
+ // Restore the editing state, if it's stored in session history.
+ if (mLSHE->HasDetachedEditor()) {
+ ReattachEditorToWindow(mLSHE);
+ }
+
+ SetHistoryEntryAndUpdateBC(Nothing(), Some<nsISHEntry*>(mLSHE));
+ }
+
+ if (!aIsTransientAboutBlank && mozilla::SessionHistoryInParent() &&
+ !IsFollowupPartOfMultipart(aRequest)) {
+ bool expired = false;
+ uint32_t cacheKey = 0;
+ nsCOMPtr<nsICacheInfoChannel> cacheChannel = do_QueryInterface(aRequest);
+ if (cacheChannel) {
+ // Check if the page has expired from cache
+ uint32_t expTime = 0;
+ cacheChannel->GetCacheTokenExpirationTime(&expTime);
+ uint32_t now = PRTimeToSeconds(PR_Now());
+ if (expTime <= now) {
+ expired = true;
+ }
+
+ // The checks for updating cache key are similar to the old session
+ // history in OnNewURI. Try to update the cache key if
+ // - we should update session history and aren't doing a session
+ // history load.
+ // - we're doing a forced reload.
+ if (((!mLoadingEntry || !mLoadingEntry->mLoadIsFromSessionHistory) &&
+ mBrowsingContext->ShouldUpdateSessionHistory(mLoadType)) ||
+ IsForceReloadType(mLoadType)) {
+ cacheChannel->GetCacheKey(&cacheKey);
+ }
+ }
+
+ MOZ_LOG(gSHLog, LogLevel::Debug, ("document %p Embed", this));
+ MoveLoadingToActiveEntry(aPersist, expired, cacheKey, aPreviousURI);
+ }
+
+ bool updateHistory = true;
+
+ // Determine if this type of load should update history
+ switch (mLoadType) {
+ case LOAD_NORMAL_REPLACE:
+ case LOAD_REFRESH_REPLACE:
+ case LOAD_STOP_CONTENT_AND_REPLACE:
+ case LOAD_RELOAD_BYPASS_CACHE:
+ case LOAD_RELOAD_BYPASS_PROXY:
+ case LOAD_RELOAD_BYPASS_PROXY_AND_CACHE:
+ case LOAD_REPLACE_BYPASS_CACHE:
+ updateHistory = false;
+ break;
+ default:
+ break;
+ }
+
+ if (!updateHistory) {
+ SetLayoutHistoryState(nullptr);
+ }
+
+ return NS_OK;
+}
+
+//*****************************************************************************
+// nsDocShell::nsIWebProgressListener
+//*****************************************************************************
+
+NS_IMETHODIMP
+nsDocShell::OnProgressChange(nsIWebProgress* aProgress, nsIRequest* aRequest,
+ int32_t aCurSelfProgress, int32_t aMaxSelfProgress,
+ int32_t aCurTotalProgress,
+ int32_t aMaxTotalProgress) {
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::OnStateChange(nsIWebProgress* aProgress, nsIRequest* aRequest,
+ uint32_t aStateFlags, nsresult aStatus) {
+ if ((~aStateFlags & (STATE_START | STATE_IS_NETWORK)) == 0) {
+ // Save timing statistics.
+ nsCOMPtr<nsIChannel> channel(do_QueryInterface(aRequest));
+ nsCOMPtr<nsIURI> uri;
+ channel->GetURI(getter_AddRefs(uri));
+ nsAutoCString aURI;
+ uri->GetAsciiSpec(aURI);
+
+ if (this == aProgress) {
+ mozilla::Unused << MaybeInitTiming();
+ mTiming->NotifyFetchStart(uri,
+ ConvertLoadTypeToNavigationType(mLoadType));
+ // If we are starting a DocumentChannel, we need to pass the timing
+ // statistics so that should a process switch occur, the starting type can
+ // be passed to the new DocShell running in the other content process.
+ if (RefPtr<DocumentChannel> docChannel = do_QueryObject(aRequest)) {
+ docChannel->SetNavigationTiming(mTiming);
+ }
+ }
+
+ // Page has begun to load
+ mBusyFlags = (BusyFlags)(BUSY_FLAGS_BUSY | BUSY_FLAGS_BEFORE_PAGE_LOAD);
+
+ if ((aStateFlags & STATE_RESTORING) == 0) {
+ // Show the progress cursor if the pref is set
+ if (StaticPrefs::ui_use_activity_cursor()) {
+ nsCOMPtr<nsIWidget> mainWidget;
+ GetMainWidget(getter_AddRefs(mainWidget));
+ if (mainWidget) {
+ mainWidget->SetCursor(nsIWidget::Cursor{eCursor_spinning});
+ }
+ }
+
+ if (StaticPrefs::browser_sessionstore_platform_collection_AtStartup()) {
+ if (IsForceReloadType(mLoadType)) {
+ if (WindowContext* windowContext =
+ mBrowsingContext->GetCurrentWindowContext()) {
+ SessionStoreChild::From(windowContext->GetWindowGlobalChild())
+ ->ResetSessionStore(mBrowsingContext,
+ mBrowsingContext->GetSessionStoreEpoch());
+ }
+ }
+ }
+ }
+ } else if ((~aStateFlags & (STATE_TRANSFERRING | STATE_IS_DOCUMENT)) == 0) {
+ // Page is loading
+ mBusyFlags = (BusyFlags)(BUSY_FLAGS_BUSY | BUSY_FLAGS_PAGE_LOADING);
+ } else if ((aStateFlags & STATE_STOP) && (aStateFlags & STATE_IS_NETWORK)) {
+ // Page has finished loading
+ mBusyFlags = BUSY_FLAGS_NONE;
+
+ // Hide the progress cursor if the pref is set
+ if (StaticPrefs::ui_use_activity_cursor()) {
+ nsCOMPtr<nsIWidget> mainWidget;
+ GetMainWidget(getter_AddRefs(mainWidget));
+ if (mainWidget) {
+ mainWidget->SetCursor(nsIWidget::Cursor{eCursor_standard});
+ }
+ }
+ }
+
+ if ((~aStateFlags & (STATE_IS_DOCUMENT | STATE_STOP)) == 0) {
+ nsCOMPtr<nsIWebProgress> webProgress =
+ do_QueryInterface(GetAsSupports(this));
+ // Is the document stop notification for this document?
+ if (aProgress == webProgress.get()) {
+ nsCOMPtr<nsIChannel> channel(do_QueryInterface(aRequest));
+ EndPageLoad(aProgress, channel, aStatus);
+ }
+ }
+ // note that redirect state changes will go through here as well, but it
+ // is better to handle those in OnRedirectStateChange where more
+ // information is available.
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::OnLocationChange(nsIWebProgress* aProgress, nsIRequest* aRequest,
+ nsIURI* aURI, uint32_t aFlags) {
+ // Since we've now changed Documents, notify the BrowsingContext that we've
+ // changed. Ideally we'd just let the BrowsingContext do this when it
+ // changes the current window global, but that happens before this and we
+ // have a lot of tests that depend on the specific ordering of messages.
+ bool isTopLevel = false;
+ if (XRE_IsParentProcess() &&
+ !(aFlags & nsIWebProgressListener::LOCATION_CHANGE_SAME_DOCUMENT) &&
+ NS_SUCCEEDED(aProgress->GetIsTopLevel(&isTopLevel)) && isTopLevel) {
+ GetBrowsingContext()->Canonical()->UpdateSecurityState();
+ }
+ return NS_OK;
+}
+
+void nsDocShell::OnRedirectStateChange(nsIChannel* aOldChannel,
+ nsIChannel* aNewChannel,
+ uint32_t aRedirectFlags,
+ uint32_t aStateFlags) {
+ NS_ASSERTION(aStateFlags & STATE_REDIRECTING,
+ "Calling OnRedirectStateChange when there is no redirect");
+
+ if (!(aStateFlags & STATE_IS_DOCUMENT)) {
+ return; // not a toplevel document
+ }
+
+ nsCOMPtr<nsIURI> oldURI, newURI;
+ aOldChannel->GetURI(getter_AddRefs(oldURI));
+ aNewChannel->GetURI(getter_AddRefs(newURI));
+ if (!oldURI || !newURI) {
+ return;
+ }
+
+ // DocumentChannel adds redirect chain to global history in the parent
+ // process. The redirect chain can't be queried from the content process, so
+ // there's no need to update global history here.
+ RefPtr<DocumentChannel> docChannel = do_QueryObject(aOldChannel);
+ if (!docChannel) {
+ // Below a URI visit is saved (see AddURIVisit method doc).
+ // The visit chain looks something like:
+ // ...
+ // Site N - 1
+ // => Site N
+ // (redirect to =>) Site N + 1 (we are here!)
+
+ // Get N - 1 and transition type
+ nsCOMPtr<nsIURI> previousURI;
+ uint32_t previousFlags = 0;
+ ExtractLastVisit(aOldChannel, getter_AddRefs(previousURI), &previousFlags);
+
+ if (aRedirectFlags & nsIChannelEventSink::REDIRECT_INTERNAL ||
+ net::ChannelIsPost(aOldChannel)) {
+ // 1. Internal redirects are ignored because they are specific to the
+ // channel implementation.
+ // 2. POSTs are not saved by global history.
+ //
+ // Regardless, we need to propagate the previous visit to the new
+ // channel.
+ SaveLastVisit(aNewChannel, previousURI, previousFlags);
+ } else {
+ // Get the HTTP response code, if available.
+ uint32_t responseStatus = 0;
+ nsCOMPtr<nsIHttpChannel> httpChannel = do_QueryInterface(aOldChannel);
+ if (httpChannel) {
+ Unused << httpChannel->GetResponseStatus(&responseStatus);
+ }
+
+ // Add visit N -1 => N
+ AddURIVisit(oldURI, previousURI, previousFlags, responseStatus);
+
+ // Since N + 1 could be the final destination, we will not save N => N + 1
+ // here. OnNewURI will do that, so we will cache it.
+ SaveLastVisit(aNewChannel, oldURI, aRedirectFlags);
+ }
+ }
+
+ if (!(aRedirectFlags & nsIChannelEventSink::REDIRECT_INTERNAL) &&
+ mLoadType & (LOAD_CMD_RELOAD | LOAD_CMD_HISTORY)) {
+ mLoadType = LOAD_NORMAL_REPLACE;
+ SetHistoryEntryAndUpdateBC(Some(nullptr), Nothing());
+ }
+}
+
+NS_IMETHODIMP
+nsDocShell::OnStatusChange(nsIWebProgress* aWebProgress, nsIRequest* aRequest,
+ nsresult aStatus, const char16_t* aMessage) {
+ MOZ_ASSERT_UNREACHABLE("notification excluded in AddProgressListener(...)");
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::OnSecurityChange(nsIWebProgress* aWebProgress, nsIRequest* aRequest,
+ uint32_t aState) {
+ MOZ_ASSERT_UNREACHABLE("notification excluded in AddProgressListener(...)");
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::OnContentBlockingEvent(nsIWebProgress* aWebProgress,
+ nsIRequest* aRequest, uint32_t aEvent) {
+ MOZ_ASSERT_UNREACHABLE("notification excluded in AddProgressListener(...)");
+ return NS_OK;
+}
+
+already_AddRefed<nsIURIFixupInfo> nsDocShell::KeywordToURI(
+ const nsACString& aKeyword, bool aIsPrivateContext) {
+ nsCOMPtr<nsIURIFixupInfo> info;
+ if (!XRE_IsContentProcess()) {
+ nsCOMPtr<nsIURIFixup> uriFixup = components::URIFixup::Service();
+ if (uriFixup) {
+ uriFixup->KeywordToURI(aKeyword, aIsPrivateContext, getter_AddRefs(info));
+ }
+ }
+ return info.forget();
+}
+
+/* static */
+already_AddRefed<nsIURI> nsDocShell::MaybeFixBadCertDomainErrorURI(
+ nsIChannel* aChannel, nsIURI* aUrl) {
+ if (!aChannel) {
+ return nullptr;
+ }
+
+ nsresult rv = NS_OK;
+ nsAutoCString host;
+ rv = aUrl->GetAsciiHost(host);
+ if (NS_WARN_IF(NS_FAILED(rv))) {
+ return nullptr;
+ }
+
+ // No point in going further if "www." is included in the hostname
+ // already. That is the only hueristic we're applying in this function.
+ if (StringBeginsWith(host, "www."_ns)) {
+ return nullptr;
+ }
+
+ // Return if fixup enable pref is turned off.
+ if (!mozilla::StaticPrefs::security_bad_cert_domain_error_url_fix_enabled()) {
+ return nullptr;
+ }
+
+ // Return if scheme is not HTTPS.
+ if (!SchemeIsHTTPS(aUrl)) {
+ return nullptr;
+ }
+
+ nsCOMPtr<nsILoadInfo> info = aChannel->LoadInfo();
+ if (!info) {
+ return nullptr;
+ }
+
+ // Skip doing the fixup if our channel was redirected, because we
+ // shouldn't be guessing things about the post-redirect URI.
+ if (!info->RedirectChain().IsEmpty()) {
+ return nullptr;
+ }
+
+ int32_t port = 0;
+ rv = aUrl->GetPort(&port);
+ if (NS_WARN_IF(NS_FAILED(rv))) {
+ return nullptr;
+ }
+
+ // Don't fix up hosts with ports.
+ if (port != -1) {
+ return nullptr;
+ }
+
+ // Don't fix up localhost url.
+ if (host == "localhost") {
+ return nullptr;
+ }
+
+ // Don't fix up hostnames with IP address.
+ if (net_IsValidIPv4Addr(host) || net_IsValidIPv6Addr(host)) {
+ return nullptr;
+ }
+
+ nsAutoCString userPass;
+ rv = aUrl->GetUserPass(userPass);
+ if (NS_WARN_IF(NS_FAILED(rv))) {
+ return nullptr;
+ }
+
+ // Security - URLs with user / password info should NOT be modified.
+ if (!userPass.IsEmpty()) {
+ return nullptr;
+ }
+
+ nsCOMPtr<nsITransportSecurityInfo> tsi;
+ rv = aChannel->GetSecurityInfo(getter_AddRefs(tsi));
+ if (NS_WARN_IF(NS_FAILED(rv))) {
+ return nullptr;
+ }
+
+ if (NS_WARN_IF(!tsi)) {
+ return nullptr;
+ }
+
+ nsCOMPtr<nsIX509Cert> cert;
+ rv = tsi->GetServerCert(getter_AddRefs(cert));
+ if (NS_WARN_IF(NS_FAILED(rv) || !cert)) {
+ return nullptr;
+ }
+
+ nsTArray<uint8_t> certBytes;
+ rv = cert->GetRawDER(certBytes);
+ if (NS_FAILED(rv)) {
+ return nullptr;
+ }
+
+ mozilla::pkix::Input serverCertInput;
+ mozilla::pkix::Result rv1 =
+ serverCertInput.Init(certBytes.Elements(), certBytes.Length());
+ if (rv1 != mozilla::pkix::Success) {
+ return nullptr;
+ }
+
+ nsAutoCString newHost("www."_ns);
+ newHost.Append(host);
+
+ mozilla::pkix::Input newHostInput;
+ rv1 = newHostInput.Init(
+ BitwiseCast<const uint8_t*, const char*>(newHost.BeginReading()),
+ newHost.Length());
+ if (rv1 != mozilla::pkix::Success) {
+ return nullptr;
+ }
+
+ // Check if adding a "www." prefix to the request's hostname will
+ // cause the response's certificate to match.
+ rv1 = mozilla::pkix::CheckCertHostname(serverCertInput, newHostInput);
+ if (rv1 != mozilla::pkix::Success) {
+ return nullptr;
+ }
+
+ nsCOMPtr<nsIURI> newURI;
+ Unused << NS_MutateURI(aUrl).SetHost(newHost).Finalize(
+ getter_AddRefs(newURI));
+
+ return newURI.forget();
+}
+
+/* static */
+already_AddRefed<nsIURI> nsDocShell::AttemptURIFixup(
+ nsIChannel* aChannel, nsresult aStatus,
+ const mozilla::Maybe<nsCString>& aOriginalURIString, uint32_t aLoadType,
+ bool aIsTopFrame, bool aAllowKeywordFixup, bool aUsePrivateBrowsing,
+ bool aNotifyKeywordSearchLoading, nsIInputStream** aNewPostData) {
+ if (aStatus != NS_ERROR_UNKNOWN_HOST && aStatus != NS_ERROR_NET_RESET &&
+ aStatus != NS_ERROR_CONNECTION_REFUSED &&
+ aStatus !=
+ mozilla::psm::GetXPCOMFromNSSError(SSL_ERROR_BAD_CERT_DOMAIN)) {
+ return nullptr;
+ }
+
+ if (!(aLoadType == LOAD_NORMAL && aIsTopFrame) && !aAllowKeywordFixup) {
+ return nullptr;
+ }
+
+ nsCOMPtr<nsIURI> url;
+ nsresult rv = aChannel->GetURI(getter_AddRefs(url));
+ if (NS_FAILED(rv)) {
+ return nullptr;
+ }
+
+ //
+ // Try and make an alternative URI from the old one
+ //
+ nsCOMPtr<nsIURI> newURI;
+ nsCOMPtr<nsIInputStream> newPostData;
+
+ nsAutoCString oldSpec;
+ url->GetSpec(oldSpec);
+
+ //
+ // First try keyword fixup
+ //
+ nsAutoString keywordProviderName, keywordAsSent;
+ if (aStatus == NS_ERROR_UNKNOWN_HOST && aAllowKeywordFixup) {
+ // we should only perform a keyword search under the following
+ // conditions:
+ // (0) Pref keyword.enabled is true
+ // (1) the url scheme is http (or https)
+ // (2) the url does not have a protocol scheme
+ // If we don't enforce such a policy, then we end up doing
+ // keyword searchs on urls we don't intend like imap, file,
+ // mailbox, etc. This could lead to a security problem where we
+ // send data to the keyword server that we shouldn't be.
+ // Someone needs to clean up keywords in general so we can
+ // determine on a per url basis if we want keywords
+ // enabled...this is just a bandaid...
+ nsAutoCString scheme;
+ Unused << url->GetScheme(scheme);
+ if (Preferences::GetBool("keyword.enabled", false) &&
+ StringBeginsWith(scheme, "http"_ns)) {
+ bool attemptFixup = false;
+ nsAutoCString host;
+ Unused << url->GetHost(host);
+ if (host.FindChar('.') == kNotFound) {
+ attemptFixup = true;
+ } else {
+ // For domains with dots, we check the public suffix validity.
+ nsCOMPtr<nsIEffectiveTLDService> tldService =
+ do_GetService(NS_EFFECTIVETLDSERVICE_CONTRACTID);
+ if (tldService) {
+ nsAutoCString suffix;
+ attemptFixup =
+ NS_SUCCEEDED(tldService->GetKnownPublicSuffix(url, suffix)) &&
+ suffix.IsEmpty();
+ }
+ }
+ if (attemptFixup) {
+ nsCOMPtr<nsIURIFixupInfo> info;
+ // only send non-qualified hosts to the keyword server
+ if (aOriginalURIString && !aOriginalURIString->IsEmpty()) {
+ info = KeywordToURI(*aOriginalURIString, aUsePrivateBrowsing);
+ } else {
+ //
+ // If this string was passed through nsStandardURL by
+ // chance, then it may have been converted from UTF-8 to
+ // ACE, which would result in a completely bogus keyword
+ // query. Here we try to recover the original Unicode
+ // value, but this is not 100% correct since the value may
+ // have been normalized per the IDN normalization rules.
+ //
+ // Since we don't have access to the exact original string
+ // that was entered by the user, this will just have to do.
+ bool isACE;
+ nsAutoCString utf8Host;
+ nsCOMPtr<nsIIDNService> idnSrv =
+ do_GetService(NS_IDNSERVICE_CONTRACTID);
+ if (idnSrv && NS_SUCCEEDED(idnSrv->IsACE(host, &isACE)) && isACE &&
+ NS_SUCCEEDED(idnSrv->ConvertACEtoUTF8(host, utf8Host))) {
+ info = KeywordToURI(utf8Host, aUsePrivateBrowsing);
+
+ } else {
+ info = KeywordToURI(host, aUsePrivateBrowsing);
+ }
+ }
+ if (info) {
+ info->GetPreferredURI(getter_AddRefs(newURI));
+ if (newURI) {
+ info->GetKeywordAsSent(keywordAsSent);
+ info->GetKeywordProviderName(keywordProviderName);
+ info->GetPostData(getter_AddRefs(newPostData));
+ }
+ }
+ }
+ }
+ }
+
+ //
+ // Now try change the address, e.g. turn http://foo into
+ // http://www.foo.com, and if that doesn't work try https with
+ // https://foo and https://www.foo.com.
+ //
+ if (aStatus == NS_ERROR_UNKNOWN_HOST || aStatus == NS_ERROR_NET_RESET) {
+ // Skip fixup for anything except a normal document load
+ // operation on the topframe.
+ bool doCreateAlternate = aLoadType == LOAD_NORMAL && aIsTopFrame;
+
+ if (doCreateAlternate) {
+ nsCOMPtr<nsILoadInfo> loadInfo = aChannel->LoadInfo();
+ nsIPrincipal* principal = loadInfo->TriggeringPrincipal();
+ // Only do this if our channel was loaded directly by the user from the
+ // URL bar or similar (system principal) and not redirected, because we
+ // shouldn't be guessing things about links from other sites, or a
+ // post-redirect URI.
+ doCreateAlternate = principal && principal->IsSystemPrincipal() &&
+ loadInfo->RedirectChain().IsEmpty();
+ }
+ // Test if keyword lookup produced a new URI or not
+ if (doCreateAlternate && newURI) {
+ bool sameURI = false;
+ url->Equals(newURI, &sameURI);
+ if (!sameURI) {
+ // Keyword lookup made a new URI so no need to try
+ // an alternate one.
+ doCreateAlternate = false;
+ }
+ }
+ if (doCreateAlternate) {
+ newURI = nullptr;
+ newPostData = nullptr;
+ keywordProviderName.Truncate();
+ keywordAsSent.Truncate();
+ nsCOMPtr<nsIURIFixup> uriFixup = components::URIFixup::Service();
+ if (uriFixup) {
+ nsCOMPtr<nsIURIFixupInfo> fixupInfo;
+ uriFixup->GetFixupURIInfo(oldSpec,
+ nsIURIFixup::FIXUP_FLAGS_MAKE_ALTERNATE_URI,
+ getter_AddRefs(fixupInfo));
+ if (fixupInfo) {
+ fixupInfo->GetPreferredURI(getter_AddRefs(newURI));
+ }
+ }
+ }
+ } else if (aStatus == NS_ERROR_CONNECTION_REFUSED &&
+ Preferences::GetBool("browser.fixup.fallback-to-https", false)) {
+ // Try HTTPS, since http didn't work
+ if (SchemeIsHTTP(url)) {
+ int32_t port = 0;
+ url->GetPort(&port);
+
+ // Fall back to HTTPS only if port is default
+ if (port == -1) {
+ newURI = nullptr;
+ newPostData = nullptr;
+ Unused << NS_MutateURI(url)
+ .SetScheme("https"_ns)
+ .Finalize(getter_AddRefs(newURI));
+ }
+ }
+ }
+
+ // If we have a SSL_ERROR_BAD_CERT_DOMAIN error, try prefixing the domain name
+ // with www. to see if we can avoid showing the cert error page. For example,
+ // https://example.com -> https://www.example.com.
+ if (aStatus ==
+ mozilla::psm::GetXPCOMFromNSSError(SSL_ERROR_BAD_CERT_DOMAIN)) {
+ newPostData = nullptr;
+ newURI = MaybeFixBadCertDomainErrorURI(aChannel, url);
+ }
+
+ // Did we make a new URI that is different to the old one? If so
+ // load it.
+ //
+ if (newURI) {
+ // Make sure the new URI is different from the old one,
+ // otherwise there's little point trying to load it again.
+ bool sameURI = false;
+ url->Equals(newURI, &sameURI);
+ if (!sameURI) {
+ if (aNewPostData) {
+ newPostData.forget(aNewPostData);
+ }
+ if (aNotifyKeywordSearchLoading) {
+ // This notification is meant for Firefox Health Report so it
+ // can increment counts from the search engine
+ MaybeNotifyKeywordSearchLoading(keywordProviderName, keywordAsSent);
+ }
+ return newURI.forget();
+ }
+ }
+
+ return nullptr;
+}
+
+nsresult nsDocShell::FilterStatusForErrorPage(
+ nsresult aStatus, nsIChannel* aChannel, uint32_t aLoadType,
+ bool aIsTopFrame, bool aUseErrorPages, bool aIsInitialDocument,
+ bool* aSkippedUnknownProtocolNavigation) {
+ // Errors to be shown only on top-level frames
+ if ((aStatus == NS_ERROR_UNKNOWN_HOST ||
+ aStatus == NS_ERROR_CONNECTION_REFUSED ||
+ aStatus == NS_ERROR_UNKNOWN_PROXY_HOST ||
+ aStatus == NS_ERROR_PROXY_CONNECTION_REFUSED ||
+ aStatus == NS_ERROR_PROXY_FORBIDDEN ||
+ aStatus == NS_ERROR_PROXY_NOT_IMPLEMENTED ||
+ aStatus == NS_ERROR_PROXY_AUTHENTICATION_FAILED ||
+ aStatus == NS_ERROR_PROXY_TOO_MANY_REQUESTS ||
+ aStatus == NS_ERROR_MALFORMED_URI ||
+ aStatus == NS_ERROR_BLOCKED_BY_POLICY ||
+ aStatus == NS_ERROR_DOM_COOP_FAILED ||
+ aStatus == NS_ERROR_DOM_COEP_FAILED) &&
+ (aIsTopFrame || aUseErrorPages)) {
+ return aStatus;
+ }
+
+ if (aStatus == NS_ERROR_NET_TIMEOUT ||
+ aStatus == NS_ERROR_NET_TIMEOUT_EXTERNAL ||
+ aStatus == NS_ERROR_PROXY_GATEWAY_TIMEOUT ||
+ aStatus == NS_ERROR_REDIRECT_LOOP ||
+ aStatus == NS_ERROR_UNKNOWN_SOCKET_TYPE ||
+ aStatus == NS_ERROR_NET_INTERRUPT || aStatus == NS_ERROR_NET_RESET ||
+ aStatus == NS_ERROR_PROXY_BAD_GATEWAY || aStatus == NS_ERROR_OFFLINE ||
+ aStatus == NS_ERROR_MALWARE_URI || aStatus == NS_ERROR_PHISHING_URI ||
+ aStatus == NS_ERROR_UNWANTED_URI || aStatus == NS_ERROR_HARMFUL_URI ||
+ aStatus == NS_ERROR_UNSAFE_CONTENT_TYPE ||
+ aStatus == NS_ERROR_INTERCEPTION_FAILED ||
+ aStatus == NS_ERROR_NET_INADEQUATE_SECURITY ||
+ aStatus == NS_ERROR_NET_HTTP2_SENT_GOAWAY ||
+ aStatus == NS_ERROR_NET_HTTP3_PROTOCOL_ERROR ||
+ aStatus == NS_ERROR_DOM_BAD_URI || aStatus == NS_ERROR_FILE_NOT_FOUND ||
+ aStatus == NS_ERROR_FILE_ACCESS_DENIED ||
+ aStatus == NS_ERROR_CORRUPTED_CONTENT ||
+ aStatus == NS_ERROR_INVALID_CONTENT_ENCODING ||
+ NS_ERROR_GET_MODULE(aStatus) == NS_ERROR_MODULE_SECURITY) {
+ // Errors to be shown for any frame
+ return aStatus;
+ }
+
+ if (aStatus == NS_ERROR_UNKNOWN_PROTOCOL) {
+ // For unknown protocols we only display an error if the load is triggered
+ // by the browser itself, or we're replacing the initial document (and
+ // nothing else). Showing the error for page-triggered navigations causes
+ // annoying behavior for users, see bug 1528305.
+ //
+ // We could, maybe, try to detect if this is in response to some user
+ // interaction (like clicking a link, or something else) and maybe show
+ // the error page in that case. But this allows for ctrl+clicking and such
+ // to see the error page.
+ nsCOMPtr<nsILoadInfo> info = aChannel->LoadInfo();
+ if (!info->TriggeringPrincipal()->IsSystemPrincipal() &&
+ StaticPrefs::dom_no_unknown_protocol_error_enabled() &&
+ !aIsInitialDocument) {
+ if (aSkippedUnknownProtocolNavigation) {
+ *aSkippedUnknownProtocolNavigation = true;
+ }
+ return NS_OK;
+ }
+ return aStatus;
+ }
+
+ if (aStatus == NS_ERROR_DOCUMENT_NOT_CACHED) {
+ // Non-caching channels will simply return NS_ERROR_OFFLINE.
+ // Caching channels would have to look at their flags to work
+ // out which error to return. Or we can fix up the error here.
+ if (!(aLoadType & LOAD_CMD_HISTORY)) {
+ return NS_ERROR_OFFLINE;
+ }
+ return aStatus;
+ }
+
+ return NS_OK;
+}
+
+nsresult nsDocShell::EndPageLoad(nsIWebProgress* aProgress,
+ nsIChannel* aChannel, nsresult aStatus) {
+ MOZ_LOG(gDocShellLeakLog, LogLevel::Debug,
+ ("DOCSHELL %p EndPageLoad status: %" PRIx32 "\n", this,
+ static_cast<uint32_t>(aStatus)));
+ if (!aChannel) {
+ return NS_ERROR_NULL_POINTER;
+ }
+
+ // Make sure to discard the initial client if we never created the initial
+ // about:blank document. Do this before possibly returning from the method
+ // due to an error.
+ mInitialClientSource.reset();
+
+ nsCOMPtr<nsIConsoleReportCollector> reporter = do_QueryInterface(aChannel);
+ if (reporter) {
+ nsCOMPtr<nsILoadGroup> loadGroup;
+ aChannel->GetLoadGroup(getter_AddRefs(loadGroup));
+ if (loadGroup) {
+ reporter->FlushConsoleReports(loadGroup);
+ } else {
+ reporter->FlushConsoleReports(GetDocument());
+ }
+ }
+
+ nsCOMPtr<nsIURI> url;
+ nsresult rv = aChannel->GetURI(getter_AddRefs(url));
+ if (NS_FAILED(rv)) {
+ return rv;
+ }
+
+ nsCOMPtr<nsITimedChannel> timingChannel = do_QueryInterface(aChannel);
+ if (timingChannel) {
+ TimeStamp channelCreationTime;
+ rv = timingChannel->GetChannelCreation(&channelCreationTime);
+ if (NS_SUCCEEDED(rv) && !channelCreationTime.IsNull()) {
+ Telemetry::AccumulateTimeDelta(Telemetry::TOTAL_CONTENT_PAGE_LOAD_TIME,
+ channelCreationTime);
+ }
+ }
+
+ // Timing is picked up by the window, we don't need it anymore
+ mTiming = nullptr;
+
+ // clean up reload state for meta charset
+ if (eCharsetReloadRequested == mCharsetReloadState) {
+ mCharsetReloadState = eCharsetReloadStopOrigional;
+ } else {
+ mCharsetReloadState = eCharsetReloadInit;
+ }
+
+ // Save a pointer to the currently-loading history entry.
+ // nsDocShell::EndPageLoad will clear mLSHE, but we may need this history
+ // entry further down in this method.
+ nsCOMPtr<nsISHEntry> loadingSHE = mLSHE;
+ mozilla::Unused << loadingSHE; // XXX: Not sure if we need this anymore
+
+ //
+ // one of many safeguards that prevent death and destruction if
+ // someone is so very very rude as to bring this window down
+ // during this load handler.
+ //
+ nsCOMPtr<nsIDocShell> kungFuDeathGrip(this);
+
+ // Notify the ContentViewer that the Document has finished loading. This
+ // will cause any OnLoad(...) and PopState(...) handlers to fire.
+ if (!mEODForCurrentDocument && mContentViewer) {
+ mIsExecutingOnLoadHandler = true;
+ nsCOMPtr<nsIContentViewer> contentViewer = mContentViewer;
+ contentViewer->LoadComplete(aStatus);
+ mIsExecutingOnLoadHandler = false;
+
+ mEODForCurrentDocument = true;
+ }
+ /* Check if the httpChannel has any cache-control related response headers,
+ * like no-store, no-cache. If so, update SHEntry so that
+ * when a user goes back/forward to this page, we appropriately do
+ * form value restoration or load from server.
+ */
+ nsCOMPtr<nsIHttpChannel> httpChannel(do_QueryInterface(aChannel));
+ if (!httpChannel) {
+ // HttpChannel could be hiding underneath a Multipart channel.
+ GetHttpChannel(aChannel, getter_AddRefs(httpChannel));
+ }
+
+ if (httpChannel) {
+ // figure out if SH should be saving layout state.
+ bool discardLayoutState = ShouldDiscardLayoutState(httpChannel);
+ if (mLSHE && discardLayoutState && (mLoadType & LOAD_CMD_NORMAL) &&
+ (mLoadType != LOAD_BYPASS_HISTORY) && (mLoadType != LOAD_ERROR_PAGE)) {
+ mLSHE->SetSaveLayoutStateFlag(false);
+ }
+ }
+
+ // Clear mLSHE after calling the onLoadHandlers. This way, if the
+ // onLoadHandler tries to load something different in
+ // itself or one of its children, we can deal with it appropriately.
+ if (mLSHE) {
+ mLSHE->SetLoadType(LOAD_HISTORY);
+
+ // Clear the mLSHE reference to indicate document loading is done one
+ // way or another.
+ SetHistoryEntryAndUpdateBC(Some(nullptr), Nothing());
+ }
+ mActiveEntryIsLoadingFromSessionHistory = false;
+
+ // if there's a refresh header in the channel, this method
+ // will set it up for us.
+ if (mBrowsingContext->IsActive() || !mDisableMetaRefreshWhenInactive)
+ RefreshURIFromQueue();
+
+ // Test whether this is the top frame or a subframe
+ bool isTopFrame = mBrowsingContext->IsTop();
+
+ bool hadErrorStatus = false;
+ // If status code indicates an error it means that DocumentChannel already
+ // tried to fixup the uri and failed. Throw an error dialog box here.
+ if (NS_FAILED(aStatus)) {
+ // If we got CONTENT_BLOCKED from EndPageLoad, then we need to fire
+ // the error event to our embedder, since tests are relying on this.
+ // The error event is usually fired by the caller of InternalLoad, but
+ // this particular error can happen asynchronously.
+ // Bug 1629201 is filed for having much clearer decision making around
+ // which cases need error events.
+ bool fireFrameErrorEvent = (aStatus == NS_ERROR_CONTENT_BLOCKED_SHOW_ALT ||
+ aStatus == NS_ERROR_CONTENT_BLOCKED);
+ UnblockEmbedderLoadEventForFailure(fireFrameErrorEvent);
+
+ bool isInitialDocument =
+ !GetExtantDocument() || GetExtantDocument()->IsInitialDocument();
+ bool skippedUnknownProtocolNavigation = false;
+ aStatus = FilterStatusForErrorPage(aStatus, aChannel, mLoadType, isTopFrame,
+ mBrowsingContext->GetUseErrorPages(),
+ isInitialDocument,
+ &skippedUnknownProtocolNavigation);
+ hadErrorStatus = true;
+ if (NS_FAILED(aStatus)) {
+ if (!mIsBeingDestroyed) {
+ DisplayLoadError(aStatus, url, nullptr, aChannel);
+ }
+ } else if (skippedUnknownProtocolNavigation) {
+ nsTArray<nsString> params;
+ if (NS_FAILED(
+ NS_GetSanitizedURIStringFromURI(url, *params.AppendElement()))) {
+ params.LastElement().AssignLiteral(u"(unknown uri)");
+ }
+ nsContentUtils::ReportToConsole(
+ nsIScriptError::warningFlag, "DOM"_ns, GetExtantDocument(),
+ nsContentUtils::eDOM_PROPERTIES, "UnknownProtocolNavigationPrevented",
+ params);
+ }
+ } else {
+ // If we have a host
+ nsCOMPtr<nsILoadInfo> loadInfo = aChannel->LoadInfo();
+ PredictorLearnRedirect(url, aChannel, loadInfo->GetOriginAttributes());
+ }
+
+ if (hadErrorStatus) {
+ // Don't send session store updates if the reason EndPageLoad was called is
+ // because we are process switching. Sometimes the update takes too long and
+ // incorrectly overrides session store data from the following load.
+ return NS_OK;
+ }
+ if (StaticPrefs::browser_sessionstore_platform_collection_AtStartup()) {
+ if (WindowContext* windowContext =
+ mBrowsingContext->GetCurrentWindowContext()) {
+ using Change = SessionStoreChangeListener::Change;
+
+ // We've finished loading the page and now we want to collect all the
+ // session store state that the page is initialized with.
+ SessionStoreChangeListener::CollectSessionStoreData(
+ windowContext,
+ EnumSet<Change>(Change::Input, Change::Scroll, Change::SessionHistory,
+ Change::WireFrame));
+ }
+ }
+
+ return NS_OK;
+}
+
+//*****************************************************************************
+// nsDocShell: Content Viewer Management
+//*****************************************************************************
+
+nsresult nsDocShell::EnsureContentViewer() {
+ if (mContentViewer) {
+ return NS_OK;
+ }
+ if (mIsBeingDestroyed) {
+ return NS_ERROR_FAILURE;
+ }
+
+ nsCOMPtr<nsIContentSecurityPolicy> cspToInheritForAboutBlank;
+ nsCOMPtr<nsIURI> baseURI;
+ nsIPrincipal* principal = GetInheritedPrincipal(false);
+ nsIPrincipal* partitionedPrincipal = GetInheritedPrincipal(false, true);
+
+ nsCOMPtr<nsIDocShellTreeItem> parentItem;
+ GetInProcessSameTypeParent(getter_AddRefs(parentItem));
+ if (parentItem) {
+ if (nsCOMPtr<nsPIDOMWindowOuter> domWin = GetWindow()) {
+ nsCOMPtr<Element> parentElement = domWin->GetFrameElementInternal();
+ if (parentElement) {
+ baseURI = parentElement->GetBaseURI();
+ cspToInheritForAboutBlank = parentElement->GetCsp();
+ }
+ }
+ }
+
+ nsresult rv = CreateAboutBlankContentViewer(
+ principal, partitionedPrincipal, cspToInheritForAboutBlank, baseURI,
+ /* aIsInitialDocument */ true);
+
+ NS_ENSURE_STATE(mContentViewer);
+
+ if (NS_SUCCEEDED(rv)) {
+ RefPtr<Document> doc(GetDocument());
+ MOZ_ASSERT(doc,
+ "Should have doc if CreateAboutBlankContentViewer "
+ "succeeded!");
+ MOZ_ASSERT(doc->IsInitialDocument(), "Document should be initial document");
+
+ // Documents created using EnsureContentViewer may be transient
+ // placeholders created by framescripts before content has a
+ // chance to load. In some cases, window.open(..., "noopener")
+ // will create such a document and then synchronously tear it
+ // down, firing a "pagehide" event. Doing so violates our
+ // assertions about DocGroups. It's easier to silence the
+ // assertion here than to avoid creating the extra document.
+ doc->IgnoreDocGroupMismatches();
+ }
+
+ return rv;
+}
+
+nsresult nsDocShell::CreateAboutBlankContentViewer(
+ nsIPrincipal* aPrincipal, nsIPrincipal* aPartitionedPrincipal,
+ nsIContentSecurityPolicy* aCSP, nsIURI* aBaseURI, bool aIsInitialDocument,
+ const Maybe<nsILoadInfo::CrossOriginEmbedderPolicy>& aCOEP,
+ bool aTryToSaveOldPresentation, bool aCheckPermitUnload,
+ WindowGlobalChild* aActor) {
+ RefPtr<Document> blankDoc;
+ nsCOMPtr<nsIContentViewer> viewer;
+ nsresult rv = NS_ERROR_FAILURE;
+
+ MOZ_ASSERT_IF(aActor, aActor->DocumentPrincipal() == aPrincipal);
+
+ /* mCreatingDocument should never be true at this point. However, it's
+ a theoretical possibility. We want to know about it and make it stop,
+ and this sounds like a job for an assertion. */
+ NS_ASSERTION(!mCreatingDocument,
+ "infinite(?) loop creating document averted");
+ if (mCreatingDocument) {
+ return NS_ERROR_FAILURE;
+ }
+
+ if (!mBrowsingContext->AncestorsAreCurrent() ||
+ mBrowsingContext->IsInBFCache()) {
+ mBrowsingContext->RemoveRootFromBFCacheSync();
+ return NS_ERROR_NOT_AVAILABLE;
+ }
+
+ // mContentViewer->PermitUnload may release |this| docshell.
+ nsCOMPtr<nsIDocShell> kungFuDeathGrip(this);
+
+ AutoRestore<bool> creatingDocument(mCreatingDocument);
+ mCreatingDocument = true;
+
+ if (aPrincipal && !aPrincipal->IsSystemPrincipal() &&
+ mItemType != typeChrome) {
+ MOZ_ASSERT(aPrincipal->OriginAttributesRef() ==
+ mBrowsingContext->OriginAttributesRef());
+ }
+
+ // Make sure timing is created. But first record whether we had it
+ // already, so we don't clobber the timing for an in-progress load.
+ bool hadTiming = mTiming;
+ bool toBeReset = MaybeInitTiming();
+ if (mContentViewer) {
+ if (aCheckPermitUnload) {
+ // We've got a content viewer already. Make sure the user
+ // permits us to discard the current document and replace it
+ // with about:blank. And also ensure we fire the unload events
+ // in the current document.
+
+ // Unload gets fired first for
+ // document loaded from the session history.
+ mTiming->NotifyBeforeUnload();
+
+ bool okToUnload;
+ rv = mContentViewer->PermitUnload(&okToUnload);
+
+ if (NS_SUCCEEDED(rv) && !okToUnload) {
+ // The user chose not to unload the page, interrupt the load.
+ MaybeResetInitTiming(toBeReset);
+ return NS_ERROR_FAILURE;
+ }
+ if (mTiming) {
+ mTiming->NotifyUnloadAccepted(mCurrentURI);
+ }
+ }
+
+ mSavingOldViewer =
+ aTryToSaveOldPresentation &&
+ CanSavePresentation(LOAD_NORMAL, nullptr, nullptr,
+ /* aReportBFCacheComboTelemetry */ true);
+
+ // Make sure to blow away our mLoadingURI just in case. No loads
+ // from inside this pagehide.
+ mLoadingURI = nullptr;
+
+ // Stop any in-progress loading, so that we don't accidentally trigger any
+ // PageShow notifications from Embed() interrupting our loading below.
+ Stop();
+
+ // Notify the current document that it is about to be unloaded!!
+ //
+ // It is important to fire the unload() notification *before* any state
+ // is changed within the DocShell - otherwise, javascript will get the
+ // wrong information :-(
+ //
+ (void)FirePageHideNotification(!mSavingOldViewer);
+ // pagehide notification might destroy this docshell.
+ if (mIsBeingDestroyed) {
+ return NS_ERROR_DOCSHELL_DYING;
+ }
+ }
+
+ // Now make sure we don't think we're in the middle of firing unload after
+ // this point. This will make us fire unload when the about:blank document
+ // unloads... but that's ok, more or less. Would be nice if it fired load
+ // too, of course.
+ mFiredUnloadEvent = false;
+
+ nsCOMPtr<nsIDocumentLoaderFactory> docFactory =
+ nsContentUtils::FindInternalContentViewer("text/html"_ns);
+
+ if (docFactory) {
+ nsCOMPtr<nsIPrincipal> principal, partitionedPrincipal;
+ const uint32_t sandboxFlags =
+ mBrowsingContext->GetHasLoadedNonInitialDocument()
+ ? mBrowsingContext->GetSandboxFlags()
+ : mBrowsingContext->GetInitialSandboxFlags();
+ // If we're sandboxed, then create a new null principal. We skip
+ // this if we're being created from WindowGlobalChild, since in
+ // that case we already have a null principal if required.
+ // We can't compare againt the BrowsingContext sandbox flag, since
+ // the value was taken when the load initiated and may have since
+ // changed.
+ if ((sandboxFlags & SANDBOXED_ORIGIN) && !aActor) {
+ if (aPrincipal) {
+ principal = NullPrincipal::CreateWithInheritedAttributes(aPrincipal);
+ } else {
+ principal = NullPrincipal::Create(GetOriginAttributes());
+ }
+ partitionedPrincipal = principal;
+ } else {
+ principal = aPrincipal;
+ partitionedPrincipal = aPartitionedPrincipal;
+ }
+
+ // We cannot get the foreign partitioned prinicpal for the initial
+ // about:blank page. So, we change to check if we need to use the
+ // partitioned principal for the service worker here.
+ MaybeCreateInitialClientSource(
+ StoragePrincipalHelper::ShouldUsePartitionPrincipalForServiceWorker(
+ this)
+ ? partitionedPrincipal
+ : principal);
+
+ // generate (about:blank) document to load
+ blankDoc = nsContentDLF::CreateBlankDocument(mLoadGroup, principal,
+ partitionedPrincipal, this);
+ if (blankDoc) {
+ // Hack: manually set the CSP for the new document
+ // Please create an actual copy of the CSP (do not share the same
+ // reference) otherwise appending a new policy within the new
+ // document will be incorrectly propagated to the opening doc.
+ if (aCSP) {
+ RefPtr<nsCSPContext> cspToInherit = new nsCSPContext();
+ cspToInherit->InitFromOther(static_cast<nsCSPContext*>(aCSP));
+ blankDoc->SetCsp(cspToInherit);
+ }
+
+ blankDoc->SetIsInitialDocument(aIsInitialDocument);
+
+ blankDoc->SetEmbedderPolicy(aCOEP);
+
+ // Hack: set the base URI manually, since this document never
+ // got Reset() with a channel.
+ blankDoc->SetBaseURI(aBaseURI);
+
+ // Copy our sandbox flags to the document. These are immutable
+ // after being set here.
+ blankDoc->SetSandboxFlags(sandboxFlags);
+
+ blankDoc->InitFeaturePolicy();
+
+ // create a content viewer for us and the new document
+ docFactory->CreateInstanceForDocument(
+ NS_ISUPPORTS_CAST(nsIDocShell*, this), blankDoc, "view",
+ getter_AddRefs(viewer));
+
+ // hook 'em up
+ if (viewer) {
+ viewer->SetContainer(this);
+ rv = Embed(viewer, aActor, true, false, nullptr, mCurrentURI);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ SetCurrentURI(blankDoc->GetDocumentURI(), nullptr,
+ /* aFireLocationChange */ true,
+ /* aIsInitialAboutBlank */ true,
+ /* aLocationFlags */ 0);
+ rv = mIsBeingDestroyed ? NS_ERROR_NOT_AVAILABLE : NS_OK;
+ }
+ }
+ }
+
+ // The transient about:blank viewer doesn't have a session history entry.
+ SetHistoryEntryAndUpdateBC(Nothing(), Some(nullptr));
+
+ // Clear out our mTiming like we would in EndPageLoad, if we didn't
+ // have one before entering this function.
+ if (!hadTiming) {
+ mTiming = nullptr;
+ mBlankTiming = true;
+ }
+
+ return rv;
+}
+
+NS_IMETHODIMP
+nsDocShell::CreateAboutBlankContentViewer(nsIPrincipal* aPrincipal,
+ nsIPrincipal* aPartitionedPrincipal,
+ nsIContentSecurityPolicy* aCSP) {
+ return CreateAboutBlankContentViewer(aPrincipal, aPartitionedPrincipal, aCSP,
+ nullptr, /* aIsInitialDocument */ false);
+}
+
+nsresult nsDocShell::CreateContentViewerForActor(
+ WindowGlobalChild* aWindowActor) {
+ MOZ_ASSERT(aWindowActor);
+
+ // FIXME: WindowGlobalChild should provide the PartitionedPrincipal.
+ // FIXME: We may want to support non-initial documents here.
+ nsresult rv = CreateAboutBlankContentViewer(
+ aWindowActor->DocumentPrincipal(), aWindowActor->DocumentPrincipal(),
+ /* aCsp */ nullptr,
+ /* aBaseURI */ nullptr,
+ /* aIsInitialDocument */ true,
+ /* aCOEP */ Nothing(),
+ /* aTryToSaveOldPresentation */ true,
+ /* aCheckPermitUnload */ true, aWindowActor);
+#ifdef DEBUG
+ if (NS_SUCCEEDED(rv)) {
+ RefPtr<Document> doc(GetDocument());
+ MOZ_ASSERT(
+ doc,
+ "Should have a document if CreateAboutBlankContentViewer succeeded");
+ MOZ_ASSERT(doc->GetOwnerGlobal() == aWindowActor->GetWindowGlobal(),
+ "New document should be in the same global as our actor");
+ MOZ_ASSERT(doc->IsInitialDocument(),
+ "New document should be an initial document");
+ }
+#endif
+
+ return rv;
+}
+
+bool nsDocShell::CanSavePresentation(uint32_t aLoadType,
+ nsIRequest* aNewRequest,
+ Document* aNewDocument,
+ bool aReportBFCacheComboTelemetry) {
+ if (!mOSHE) {
+ return false; // no entry to save into
+ }
+
+ MOZ_ASSERT(!mozilla::SessionHistoryInParent(),
+ "mOSHE cannot be non-null with SHIP");
+ nsCOMPtr<nsIContentViewer> viewer = mOSHE->GetContentViewer();
+ if (viewer) {
+ NS_WARNING("mOSHE already has a content viewer!");
+ return false;
+ }
+
+ // Only save presentation for "normal" loads and link loads. Anything else
+ // probably wants to refetch the page, so caching the old presentation
+ // would be incorrect.
+ if (aLoadType != LOAD_NORMAL && aLoadType != LOAD_HISTORY &&
+ aLoadType != LOAD_LINK && aLoadType != LOAD_STOP_CONTENT &&
+ aLoadType != LOAD_STOP_CONTENT_AND_REPLACE &&
+ aLoadType != LOAD_ERROR_PAGE) {
+ return false;
+ }
+
+ // If the session history entry has the saveLayoutState flag set to false,
+ // then we should not cache the presentation.
+ if (!mOSHE->GetSaveLayoutStateFlag()) {
+ return false;
+ }
+
+ // If the document is not done loading, don't cache it.
+ if (!mScriptGlobal || mScriptGlobal->IsLoading()) {
+ MOZ_LOG(gPageCacheLog, mozilla::LogLevel::Verbose,
+ ("Blocked due to document still loading"));
+ return false;
+ }
+
+ if (mScriptGlobal->WouldReuseInnerWindow(aNewDocument)) {
+ return false;
+ }
+
+ // Avoid doing the work of saving the presentation state in the case where
+ // the content viewer cache is disabled.
+ if (nsSHistory::GetMaxTotalViewers() == 0) {
+ return false;
+ }
+
+ // Don't cache the content viewer if we're in a subframe.
+ if (mBrowsingContext->GetParent()) {
+ return false; // this is a subframe load
+ }
+
+ // If the document does not want its presentation cached, then don't.
+ RefPtr<Document> doc = mScriptGlobal->GetExtantDoc();
+
+ uint32_t bfCacheCombo = 0;
+ bool canSavePresentation =
+ doc->CanSavePresentation(aNewRequest, bfCacheCombo, true);
+ MOZ_ASSERT_IF(canSavePresentation, bfCacheCombo == 0);
+ if (canSavePresentation && doc->IsTopLevelContentDocument()) {
+ auto* browsingContextGroup = mBrowsingContext->Group();
+ nsTArray<RefPtr<BrowsingContext>>& topLevelContext =
+ browsingContextGroup->Toplevels();
+
+ for (const auto& browsingContext : topLevelContext) {
+ if (browsingContext != mBrowsingContext) {
+ if (StaticPrefs::docshell_shistory_bfcache_require_no_opener()) {
+ canSavePresentation = false;
+ }
+ bfCacheCombo |= BFCacheStatus::NOT_ONLY_TOPLEVEL_IN_BCG;
+ break;
+ }
+ }
+ }
+
+ if (aReportBFCacheComboTelemetry) {
+ ReportBFCacheComboTelemetry(bfCacheCombo);
+ }
+ return doc && canSavePresentation;
+}
+
+/* static */
+void nsDocShell::ReportBFCacheComboTelemetry(uint32_t aCombo) {
+ // There are 11 possible reasons to make a request fails to use BFCache
+ // (see BFCacheStatus in dom/base/Document.h), and we'd like to record
+ // the common combinations for reasons which make requests fail to use
+ // BFCache. These combinations are generated based on some local browsings,
+ // we need to adjust them when necessary.
+ enum BFCacheStatusCombo : uint32_t {
+ BFCACHE_SUCCESS,
+ NOT_ONLY_TOPLEVEL = mozilla::dom::BFCacheStatus::NOT_ONLY_TOPLEVEL_IN_BCG,
+ // If both unload and beforeunload listeners are presented, it'll be
+ // recorded as unload
+ UNLOAD = mozilla::dom::BFCacheStatus::UNLOAD_LISTENER,
+ UNLOAD_REQUEST = mozilla::dom::BFCacheStatus::UNLOAD_LISTENER |
+ mozilla::dom::BFCacheStatus::REQUEST,
+ REQUEST = mozilla::dom::BFCacheStatus::REQUEST,
+ UNLOAD_REQUEST_PEER = mozilla::dom::BFCacheStatus::UNLOAD_LISTENER |
+ mozilla::dom::BFCacheStatus::REQUEST |
+ mozilla::dom::BFCacheStatus::ACTIVE_PEER_CONNECTION,
+ UNLOAD_REQUEST_PEER_MSE =
+ mozilla::dom::BFCacheStatus::UNLOAD_LISTENER |
+ mozilla::dom::BFCacheStatus::REQUEST |
+ mozilla::dom::BFCacheStatus::ACTIVE_PEER_CONNECTION |
+ mozilla::dom::BFCacheStatus::CONTAINS_MSE_CONTENT,
+ UNLOAD_REQUEST_MSE = mozilla::dom::BFCacheStatus::UNLOAD_LISTENER |
+ mozilla::dom::BFCacheStatus::REQUEST |
+ mozilla::dom::BFCacheStatus::CONTAINS_MSE_CONTENT,
+ SUSPENDED_UNLOAD_REQUEST_PEER =
+ mozilla::dom::BFCacheStatus::SUSPENDED |
+ mozilla::dom::BFCacheStatus::UNLOAD_LISTENER |
+ mozilla::dom::BFCacheStatus::REQUEST |
+ mozilla::dom::BFCacheStatus::ACTIVE_PEER_CONNECTION,
+ REMOTE_SUBFRAMES = mozilla::dom::BFCacheStatus::CONTAINS_REMOTE_SUBFRAMES,
+ BEFOREUNLOAD = mozilla::dom::BFCacheStatus::BEFOREUNLOAD_LISTENER,
+ };
+
+ // Beforeunload is recorded as a blocker only if it is the only one to block
+ // bfcache.
+ if (aCombo != mozilla::dom::BFCacheStatus::BEFOREUNLOAD_LISTENER) {
+ aCombo &= ~mozilla::dom::BFCacheStatus::BEFOREUNLOAD_LISTENER;
+ }
+ switch (aCombo) {
+ case BFCACHE_SUCCESS:
+ Telemetry::AccumulateCategorical(
+ Telemetry::LABELS_BFCACHE_COMBO::BFCache_Success);
+ break;
+ case NOT_ONLY_TOPLEVEL:
+ if (StaticPrefs::docshell_shistory_bfcache_require_no_opener()) {
+ Telemetry::AccumulateCategorical(
+ Telemetry::LABELS_BFCACHE_COMBO::Other);
+ break;
+ }
+ Telemetry::AccumulateCategorical(
+ Telemetry::LABELS_BFCACHE_COMBO::BFCache_Success);
+ Telemetry::AccumulateCategorical(
+ Telemetry::LABELS_BFCACHE_COMBO::Success_Not_Toplevel);
+ break;
+ case UNLOAD:
+ Telemetry::AccumulateCategorical(Telemetry::LABELS_BFCACHE_COMBO::Unload);
+ break;
+ case BEFOREUNLOAD:
+ Telemetry::AccumulateCategorical(
+ Telemetry::LABELS_BFCACHE_COMBO::Beforeunload);
+ break;
+ case UNLOAD_REQUEST:
+ Telemetry::AccumulateCategorical(
+ Telemetry::LABELS_BFCACHE_COMBO::Unload_Req);
+ break;
+ case REQUEST:
+ Telemetry::AccumulateCategorical(Telemetry::LABELS_BFCACHE_COMBO::Req);
+ break;
+ case UNLOAD_REQUEST_PEER:
+ Telemetry::AccumulateCategorical(
+ Telemetry::LABELS_BFCACHE_COMBO::Unload_Req_Peer);
+ break;
+ case UNLOAD_REQUEST_PEER_MSE:
+ Telemetry::AccumulateCategorical(
+ Telemetry::LABELS_BFCACHE_COMBO::Unload_Req_Peer_MSE);
+ break;
+ case UNLOAD_REQUEST_MSE:
+ Telemetry::AccumulateCategorical(
+ Telemetry::LABELS_BFCACHE_COMBO::Unload_Req_MSE);
+ break;
+ case SUSPENDED_UNLOAD_REQUEST_PEER:
+ Telemetry::AccumulateCategorical(
+ Telemetry::LABELS_BFCACHE_COMBO::SPD_Unload_Req_Peer);
+ break;
+ case REMOTE_SUBFRAMES:
+ Telemetry::AccumulateCategorical(
+ Telemetry::LABELS_BFCACHE_COMBO::Remote_Subframes);
+ break;
+ default:
+ Telemetry::AccumulateCategorical(Telemetry::LABELS_BFCACHE_COMBO::Other);
+ break;
+ }
+};
+
+void nsDocShell::ReattachEditorToWindow(nsISHEntry* aSHEntry) {
+ MOZ_ASSERT(!mozilla::SessionHistoryInParent());
+ MOZ_ASSERT(!mIsBeingDestroyed);
+
+ NS_ASSERTION(!mEditorData,
+ "Why reattach an editor when we already have one?");
+ NS_ASSERTION(aSHEntry && aSHEntry->HasDetachedEditor(),
+ "Reattaching when there's not a detached editor.");
+
+ if (mEditorData || !aSHEntry) {
+ return;
+ }
+
+ mEditorData = WrapUnique(aSHEntry->ForgetEditorData());
+ if (mEditorData) {
+#ifdef DEBUG
+ nsresult rv =
+#endif
+ mEditorData->ReattachToWindow(this);
+ NS_ASSERTION(NS_SUCCEEDED(rv), "Failed to reattach editing session");
+ }
+}
+
+void nsDocShell::DetachEditorFromWindow() {
+ if (!mEditorData || mEditorData->WaitingForLoad()) {
+ // If there's nothing to detach, or if the editor data is actually set
+ // up for the _new_ page that's coming in, don't detach.
+ return;
+ }
+
+ NS_ASSERTION(!mOSHE || !mOSHE->HasDetachedEditor(),
+ "Detaching editor when it's already detached.");
+
+ nsresult res = mEditorData->DetachFromWindow();
+ NS_ASSERTION(NS_SUCCEEDED(res), "Failed to detach editor");
+
+ if (NS_SUCCEEDED(res)) {
+ // Make mOSHE hold the owning ref to the editor data.
+ if (mOSHE) {
+ MOZ_ASSERT(!mIsBeingDestroyed || !mOSHE->HasDetachedEditor(),
+ "We should not set the editor data again once after we "
+ "detached the editor data during destroying this docshell");
+ mOSHE->SetEditorData(mEditorData.release());
+ } else {
+ mEditorData = nullptr;
+ }
+ }
+
+#ifdef DEBUG
+ {
+ bool isEditable;
+ GetEditable(&isEditable);
+ NS_ASSERTION(!isEditable,
+ "Window is still editable after detaching editor.");
+ }
+#endif // DEBUG
+}
+
+nsresult nsDocShell::CaptureState() {
+ MOZ_ASSERT(!mozilla::SessionHistoryInParent());
+
+ if (!mOSHE || mOSHE == mLSHE) {
+ // No entry to save into, or we're replacing the existing entry.
+ return NS_ERROR_FAILURE;
+ }
+
+ if (!mScriptGlobal) {
+ return NS_ERROR_FAILURE;
+ }
+
+ nsCOMPtr<nsISupports> windowState = mScriptGlobal->SaveWindowState();
+ NS_ENSURE_TRUE(windowState, NS_ERROR_FAILURE);
+
+ if (MOZ_UNLIKELY(MOZ_LOG_TEST(gPageCacheLog, LogLevel::Debug))) {
+ nsAutoCString spec;
+ nsCOMPtr<nsIURI> uri = mOSHE->GetURI();
+ if (uri) {
+ uri->GetSpec(spec);
+ }
+ MOZ_LOG(gPageCacheLog, LogLevel::Debug,
+ ("Saving presentation into session history, URI: %s", spec.get()));
+ }
+
+ mOSHE->SetWindowState(windowState);
+
+ // Suspend refresh URIs and save off the timer queue
+ mOSHE->SetRefreshURIList(mSavedRefreshURIList);
+
+ // Capture the current content viewer bounds.
+ if (mContentViewer) {
+ nsIntRect bounds;
+ mContentViewer->GetBounds(bounds);
+ mOSHE->SetViewerBounds(bounds);
+ }
+
+ // Capture the docshell hierarchy.
+ mOSHE->ClearChildShells();
+
+ uint32_t childCount = mChildList.Length();
+ for (uint32_t i = 0; i < childCount; ++i) {
+ nsCOMPtr<nsIDocShellTreeItem> childShell = do_QueryInterface(ChildAt(i));
+ NS_ASSERTION(childShell, "null child shell");
+
+ mOSHE->AddChildShell(childShell);
+ }
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::RestorePresentationEvent::Run() {
+ MOZ_ASSERT(!mozilla::SessionHistoryInParent());
+
+ if (mDocShell && NS_FAILED(mDocShell->RestoreFromHistory())) {
+ NS_WARNING("RestoreFromHistory failed");
+ }
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::BeginRestore(nsIContentViewer* aContentViewer, bool aTop) {
+ MOZ_ASSERT(!mozilla::SessionHistoryInParent());
+
+ nsresult rv;
+ if (!aContentViewer) {
+ rv = EnsureContentViewer();
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ aContentViewer = mContentViewer;
+ }
+
+ // Dispatch events for restoring the presentation. We try to simulate
+ // the progress notifications loading the document would cause, so we add
+ // the document's channel to the loadgroup to initiate stateChange
+ // notifications.
+
+ RefPtr<Document> doc = aContentViewer->GetDocument();
+ if (doc) {
+ nsIChannel* channel = doc->GetChannel();
+ if (channel) {
+ mEODForCurrentDocument = false;
+ mIsRestoringDocument = true;
+ mLoadGroup->AddRequest(channel, nullptr);
+ mIsRestoringDocument = false;
+ }
+ }
+
+ if (!aTop) {
+ // This point corresponds to us having gotten OnStartRequest or
+ // STATE_START, so do the same thing that CreateContentViewer does at
+ // this point to ensure that unload/pagehide events for this document
+ // will fire when it's unloaded again.
+ mFiredUnloadEvent = false;
+
+ // For non-top frames, there is no notion of making sure that the
+ // previous document is in the domwindow when STATE_START notifications
+ // happen. We can just call BeginRestore for all of the child shells
+ // now.
+ rv = BeginRestoreChildren();
+ NS_ENSURE_SUCCESS(rv, rv);
+ }
+
+ return NS_OK;
+}
+
+nsresult nsDocShell::BeginRestoreChildren() {
+ MOZ_ASSERT(!mozilla::SessionHistoryInParent());
+
+ for (auto* childDocLoader : mChildList.ForwardRange()) {
+ nsCOMPtr<nsIDocShell> child = do_QueryObject(childDocLoader);
+ if (child) {
+ nsresult rv = child->BeginRestore(nullptr, false);
+ NS_ENSURE_SUCCESS(rv, rv);
+ }
+ }
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::FinishRestore() {
+ MOZ_ASSERT(!mozilla::SessionHistoryInParent());
+
+ // First we call finishRestore() on our children. In the simulated load,
+ // all of the child frames finish loading before the main document.
+
+ for (auto* childDocLoader : mChildList.ForwardRange()) {
+ nsCOMPtr<nsIDocShell> child = do_QueryObject(childDocLoader);
+ if (child) {
+ child->FinishRestore();
+ }
+ }
+
+ if (mOSHE && mOSHE->HasDetachedEditor()) {
+ ReattachEditorToWindow(mOSHE);
+ }
+
+ RefPtr<Document> doc = GetDocument();
+ if (doc) {
+ // Finally, we remove the request from the loadgroup. This will
+ // cause onStateChange(STATE_STOP) to fire, which will fire the
+ // pageshow event to the chrome.
+
+ nsIChannel* channel = doc->GetChannel();
+ if (channel) {
+ mIsRestoringDocument = true;
+ mLoadGroup->RemoveRequest(channel, nullptr, NS_OK);
+ mIsRestoringDocument = false;
+ }
+ }
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetRestoringDocument(bool* aRestoring) {
+ *aRestoring = mIsRestoringDocument;
+ return NS_OK;
+}
+
+nsresult nsDocShell::RestorePresentation(nsISHEntry* aSHEntry,
+ bool* aRestoring) {
+ MOZ_ASSERT(!mozilla::SessionHistoryInParent());
+ MOZ_ASSERT(!mIsBeingDestroyed);
+
+ NS_ASSERTION(mLoadType & LOAD_CMD_HISTORY,
+ "RestorePresentation should only be called for history loads");
+
+ nsCOMPtr<nsIContentViewer> viewer = aSHEntry->GetContentViewer();
+
+ nsAutoCString spec;
+ if (MOZ_UNLIKELY(MOZ_LOG_TEST(gPageCacheLog, LogLevel::Debug))) {
+ nsCOMPtr<nsIURI> uri = aSHEntry->GetURI();
+ if (uri) {
+ uri->GetSpec(spec);
+ }
+ }
+
+ *aRestoring = false;
+
+ if (!viewer) {
+ MOZ_LOG(gPageCacheLog, LogLevel::Debug,
+ ("no saved presentation for uri: %s", spec.get()));
+ return NS_OK;
+ }
+
+ // We need to make sure the content viewer's container is this docshell.
+ // In subframe navigation, it's possible for the docshell that the
+ // content viewer was originally loaded into to be replaced with a
+ // different one. We don't currently support restoring the presentation
+ // in that case.
+
+ nsCOMPtr<nsIDocShell> container;
+ viewer->GetContainer(getter_AddRefs(container));
+ if (!::SameCOMIdentity(container, GetAsSupports(this))) {
+ MOZ_LOG(gPageCacheLog, LogLevel::Debug,
+ ("No valid container, clearing presentation"));
+ aSHEntry->SetContentViewer(nullptr);
+ return NS_ERROR_FAILURE;
+ }
+
+ NS_ASSERTION(mContentViewer != viewer, "Restoring existing presentation");
+
+ MOZ_LOG(gPageCacheLog, LogLevel::Debug,
+ ("restoring presentation from session history: %s", spec.get()));
+
+ SetHistoryEntryAndUpdateBC(Some(aSHEntry), Nothing());
+
+ // Post an event that will remove the request after we've returned
+ // to the event loop. This mimics the way it is called by nsIChannel
+ // implementations.
+
+ // Revoke any pending restore (just in case).
+ NS_ASSERTION(!mRestorePresentationEvent.IsPending(),
+ "should only have one RestorePresentationEvent");
+ mRestorePresentationEvent.Revoke();
+
+ RefPtr<RestorePresentationEvent> evt = new RestorePresentationEvent(this);
+ nsresult rv = Dispatch(TaskCategory::Other, do_AddRef(evt));
+ if (NS_SUCCEEDED(rv)) {
+ mRestorePresentationEvent = evt.get();
+ // The rest of the restore processing will happen on our event
+ // callback.
+ *aRestoring = true;
+ }
+
+ return rv;
+}
+
+namespace {
+class MOZ_STACK_CLASS PresentationEventForgetter {
+ public:
+ explicit PresentationEventForgetter(
+ nsRevocableEventPtr<nsDocShell::RestorePresentationEvent>&
+ aRestorePresentationEvent)
+ : mRestorePresentationEvent(aRestorePresentationEvent),
+ mEvent(aRestorePresentationEvent.get()) {}
+
+ ~PresentationEventForgetter() { Forget(); }
+
+ void Forget() {
+ if (mRestorePresentationEvent.get() == mEvent) {
+ mRestorePresentationEvent.Forget();
+ mEvent = nullptr;
+ }
+ }
+
+ private:
+ nsRevocableEventPtr<nsDocShell::RestorePresentationEvent>&
+ mRestorePresentationEvent;
+ RefPtr<nsDocShell::RestorePresentationEvent> mEvent;
+};
+
+} // namespace
+
+bool nsDocShell::SandboxFlagsImplyCookies(const uint32_t& aSandboxFlags) {
+ return (aSandboxFlags & (SANDBOXED_ORIGIN | SANDBOXED_SCRIPTS)) == 0;
+}
+
+nsresult nsDocShell::RestoreFromHistory() {
+ MOZ_ASSERT(!mozilla::SessionHistoryInParent());
+ MOZ_ASSERT(mRestorePresentationEvent.IsPending());
+ PresentationEventForgetter forgetter(mRestorePresentationEvent);
+
+ // This section of code follows the same ordering as CreateContentViewer.
+ if (!mLSHE) {
+ return NS_ERROR_FAILURE;
+ }
+
+ nsCOMPtr<nsIContentViewer> viewer = mLSHE->GetContentViewer();
+ if (!viewer) {
+ return NS_ERROR_FAILURE;
+ }
+
+ if (mSavingOldViewer) {
+ // We determined that it was safe to cache the document presentation
+ // at the time we initiated the new load. We need to check whether
+ // it's still safe to do so, since there may have been DOM mutations
+ // or new requests initiated.
+ RefPtr<Document> doc = viewer->GetDocument();
+ nsIRequest* request = nullptr;
+ if (doc) {
+ request = doc->GetChannel();
+ }
+ mSavingOldViewer = CanSavePresentation(
+ mLoadType, request, doc, /* aReportBFCacheComboTelemetry */ false);
+ }
+
+ // Protect against mLSHE going away via a load triggered from
+ // pagehide or unload.
+ nsCOMPtr<nsISHEntry> origLSHE = mLSHE;
+
+ // Make sure to blow away our mLoadingURI just in case. No loads
+ // from inside this pagehide.
+ mLoadingURI = nullptr;
+
+ // Notify the old content viewer that it's being hidden.
+ FirePageHideNotification(!mSavingOldViewer);
+ // pagehide notification might destroy this docshell.
+ if (mIsBeingDestroyed) {
+ return NS_ERROR_DOCSHELL_DYING;
+ }
+
+ // If mLSHE was changed as a result of the pagehide event, then
+ // something else was loaded. Don't finish restoring.
+ if (mLSHE != origLSHE) {
+ return NS_OK;
+ }
+
+ // Add the request to our load group. We do this before swapping out
+ // the content viewers so that consumers of STATE_START can access
+ // the old document. We only deal with the toplevel load at this time --
+ // to be consistent with normal document loading, subframes cannot start
+ // loading until after data arrives, which is after STATE_START completes.
+
+ RefPtr<RestorePresentationEvent> currentPresentationRestoration =
+ mRestorePresentationEvent.get();
+ Stop();
+ // Make sure we're still restoring the same presentation.
+ // If we aren't, docshell is in process doing another load already.
+ NS_ENSURE_STATE(currentPresentationRestoration ==
+ mRestorePresentationEvent.get());
+ BeginRestore(viewer, true);
+ NS_ENSURE_STATE(currentPresentationRestoration ==
+ mRestorePresentationEvent.get());
+ forgetter.Forget();
+
+ // Set mFiredUnloadEvent = false so that the unload handler for the
+ // *new* document will fire.
+ mFiredUnloadEvent = false;
+
+ mURIResultedInDocument = true;
+ RefPtr<ChildSHistory> rootSH = GetRootSessionHistory();
+ if (rootSH) {
+ mPreviousEntryIndex = rootSH->Index();
+ rootSH->LegacySHistory()->UpdateIndex();
+ mLoadedEntryIndex = rootSH->Index();
+ MOZ_LOG(gPageCacheLog, LogLevel::Verbose,
+ ("Previous index: %d, Loaded index: %d", mPreviousEntryIndex,
+ mLoadedEntryIndex));
+ }
+
+ // Rather than call Embed(), we will retrieve the viewer from the session
+ // history entry and swap it in.
+ // XXX can we refactor this so that we can just call Embed()?
+ PersistLayoutHistoryState();
+ nsresult rv;
+ if (mContentViewer) {
+ if (mSavingOldViewer && NS_FAILED(CaptureState())) {
+ if (mOSHE) {
+ mOSHE->SyncPresentationState();
+ }
+ mSavingOldViewer = false;
+ }
+ }
+
+ mSavedRefreshURIList = nullptr;
+
+ // In cases where we use a transient about:blank viewer between loads,
+ // we never show the transient viewer, so _its_ previous viewer is never
+ // unhooked from the view hierarchy. Destroy any such previous viewer now,
+ // before we grab the root view sibling, so that we don't grab a view
+ // that's about to go away.
+
+ if (mContentViewer) {
+ // Make sure to hold a strong ref to previousViewer here while we
+ // drop the reference to it from mContentViewer.
+ nsCOMPtr<nsIContentViewer> previousViewer =
+ mContentViewer->GetPreviousViewer();
+ if (previousViewer) {
+ mContentViewer->SetPreviousViewer(nullptr);
+ previousViewer->Destroy();
+ }
+ }
+
+ // Save off the root view's parent and sibling so that we can insert the
+ // new content viewer's root view at the same position. Also save the
+ // bounds of the root view's widget.
+
+ nsView* rootViewSibling = nullptr;
+ nsView* rootViewParent = nullptr;
+ nsIntRect newBounds(0, 0, 0, 0);
+
+ PresShell* oldPresShell = GetPresShell();
+ if (oldPresShell) {
+ nsViewManager* vm = oldPresShell->GetViewManager();
+ if (vm) {
+ nsView* oldRootView = vm->GetRootView();
+
+ if (oldRootView) {
+ rootViewSibling = oldRootView->GetNextSibling();
+ rootViewParent = oldRootView->GetParent();
+
+ mContentViewer->GetBounds(newBounds);
+ }
+ }
+ }
+
+ nsCOMPtr<nsIContent> container;
+ RefPtr<Document> sibling;
+ if (rootViewParent && rootViewParent->GetParent()) {
+ nsIFrame* frame = rootViewParent->GetParent()->GetFrame();
+ container = frame ? frame->GetContent() : nullptr;
+ }
+ if (rootViewSibling) {
+ nsIFrame* frame = rootViewSibling->GetFrame();
+ sibling = frame ? frame->PresShell()->GetDocument() : nullptr;
+ }
+
+ // Transfer ownership to mContentViewer. By ensuring that either the
+ // docshell or the session history, but not both, have references to the
+ // content viewer, we prevent the viewer from being torn down after
+ // Destroy() is called.
+
+ if (mContentViewer) {
+ mContentViewer->Close(mSavingOldViewer ? mOSHE.get() : nullptr);
+ viewer->SetPreviousViewer(mContentViewer);
+ }
+ if (mOSHE && (!mContentViewer || !mSavingOldViewer)) {
+ // We don't plan to save a viewer in mOSHE; tell it to drop
+ // any other state it's holding.
+ mOSHE->SyncPresentationState();
+ }
+
+ // Order the mContentViewer setup just like Embed does.
+ mContentViewer = nullptr;
+
+ // Now that we're about to switch documents, forget all of our children.
+ // Note that we cached them as needed up in CaptureState above.
+ DestroyChildren();
+
+ mContentViewer.swap(viewer);
+
+ // Grab all of the related presentation from the SHEntry now.
+ // Clearing the viewer from the SHEntry will clear all of this state.
+ nsCOMPtr<nsISupports> windowState = mLSHE->GetWindowState();
+ mLSHE->SetWindowState(nullptr);
+
+ bool sticky = mLSHE->GetSticky();
+
+ RefPtr<Document> document = mContentViewer->GetDocument();
+
+ nsCOMArray<nsIDocShellTreeItem> childShells;
+ int32_t i = 0;
+ nsCOMPtr<nsIDocShellTreeItem> child;
+ while (NS_SUCCEEDED(mLSHE->ChildShellAt(i++, getter_AddRefs(child))) &&
+ child) {
+ childShells.AppendObject(child);
+ }
+
+ // get the previous content viewer size
+ nsIntRect oldBounds(0, 0, 0, 0);
+ mLSHE->GetViewerBounds(oldBounds);
+
+ // Restore the refresh URI list. The refresh timers will be restarted
+ // when EndPageLoad() is called.
+ nsCOMPtr<nsIMutableArray> refreshURIList = mLSHE->GetRefreshURIList();
+
+ // Reattach to the window object.
+ mIsRestoringDocument = true; // for MediaDocument::BecomeInteractive
+ rv = mContentViewer->Open(windowState, mLSHE);
+ mIsRestoringDocument = false;
+
+ // Hack to keep nsDocShellEditorData alive across the
+ // SetContentViewer(nullptr) call below.
+ UniquePtr<nsDocShellEditorData> data(mLSHE->ForgetEditorData());
+
+ // Now remove it from the cached presentation.
+ mLSHE->SetContentViewer(nullptr);
+ mEODForCurrentDocument = false;
+
+ mLSHE->SetEditorData(data.release());
+
+#ifdef DEBUG
+ {
+ nsCOMPtr<nsIMutableArray> refreshURIs = mLSHE->GetRefreshURIList();
+ nsCOMPtr<nsIDocShellTreeItem> childShell;
+ mLSHE->ChildShellAt(0, getter_AddRefs(childShell));
+ NS_ASSERTION(!refreshURIs && !childShell,
+ "SHEntry should have cleared presentation state");
+ }
+#endif
+
+ // Restore the sticky state of the viewer. The viewer has set this state
+ // on the history entry in Destroy() just before marking itself non-sticky,
+ // to avoid teardown of the presentation.
+ mContentViewer->SetSticky(sticky);
+
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ // mLSHE is now our currently-loaded document.
+ SetHistoryEntryAndUpdateBC(Nothing(), Some<nsISHEntry*>(mLSHE));
+
+ // We aren't going to restore any items from the LayoutHistoryState,
+ // but we don't want them to stay around in case the page is reloaded.
+ SetLayoutHistoryState(nullptr);
+
+ // This is the end of our Embed() replacement
+
+ mSavingOldViewer = false;
+ mEODForCurrentDocument = false;
+
+ if (document) {
+ RefPtr<nsDocShell> parent = GetInProcessParentDocshell();
+ if (parent) {
+ RefPtr<Document> d = parent->GetDocument();
+ if (d) {
+ if (d->EventHandlingSuppressed()) {
+ document->SuppressEventHandling(d->EventHandlingSuppressed());
+ }
+ }
+ }
+
+ // Use the uri from the mLSHE we had when we entered this function
+ // (which need not match the document's URI if anchors are involved),
+ // since that's the history entry we're loading. Note that if we use
+ // origLSHE we don't have to worry about whether the entry in question
+ // is still mLSHE or whether it's now mOSHE.
+ nsCOMPtr<nsIURI> uri = origLSHE->GetURI();
+ SetCurrentURI(uri, document->GetChannel(), /* aFireLocationChange */ true,
+ /* aIsInitialAboutBlank */ false,
+ /* aLocationFlags */ 0);
+ }
+
+ // This is the end of our CreateContentViewer() replacement.
+ // Now we simulate a load. First, we restore the state of the javascript
+ // window object.
+ nsCOMPtr<nsPIDOMWindowOuter> privWin = GetWindow();
+ NS_ASSERTION(privWin, "could not get nsPIDOMWindow interface");
+
+ // Now, dispatch a title change event which would happen as the
+ // <head> is parsed.
+ document->NotifyPossibleTitleChange(false);
+
+ // Now we simulate appending child docshells for subframes.
+ for (i = 0; i < childShells.Count(); ++i) {
+ nsIDocShellTreeItem* childItem = childShells.ObjectAt(i);
+ nsCOMPtr<nsIDocShell> childShell = do_QueryInterface(childItem);
+
+ // Make sure to not clobber the state of the child. Since AddChild
+ // always clobbers it, save it off first.
+ bool allowRedirects;
+ childShell->GetAllowMetaRedirects(&allowRedirects);
+
+ bool allowSubframes;
+ childShell->GetAllowSubframes(&allowSubframes);
+
+ bool allowImages;
+ childShell->GetAllowImages(&allowImages);
+
+ bool allowMedia = childShell->GetAllowMedia();
+
+ bool allowDNSPrefetch;
+ childShell->GetAllowDNSPrefetch(&allowDNSPrefetch);
+
+ bool allowContentRetargeting = childShell->GetAllowContentRetargeting();
+ bool allowContentRetargetingOnChildren =
+ childShell->GetAllowContentRetargetingOnChildren();
+
+ // this.AddChild(child) calls child.SetDocLoaderParent(this), meaning that
+ // the child inherits our state. Among other things, this means that the
+ // child inherits our mPrivateBrowsingId, which is what we want.
+ AddChild(childItem);
+
+ childShell->SetAllowMetaRedirects(allowRedirects);
+ childShell->SetAllowSubframes(allowSubframes);
+ childShell->SetAllowImages(allowImages);
+ childShell->SetAllowMedia(allowMedia);
+ childShell->SetAllowDNSPrefetch(allowDNSPrefetch);
+ childShell->SetAllowContentRetargeting(allowContentRetargeting);
+ childShell->SetAllowContentRetargetingOnChildren(
+ allowContentRetargetingOnChildren);
+
+ rv = childShell->BeginRestore(nullptr, false);
+ NS_ENSURE_SUCCESS(rv, rv);
+ }
+
+ // Make sure to restore the window state after adding the child shells back
+ // to the tree. This is necessary for Thaw() and Resume() to propagate
+ // properly.
+ rv = privWin->RestoreWindowState(windowState);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ RefPtr<PresShell> presShell = GetPresShell();
+
+ // We may be displayed on a different monitor (or in a different
+ // HiDPI mode) than when we got into the history list. So we need
+ // to check if this has happened. See bug 838239.
+
+ // Because the prescontext normally handles resolution changes via
+ // a runnable (see nsPresContext::UIResolutionChanged), its device
+ // context won't be -immediately- updated as a result of calling
+ // presShell->BackingScaleFactorChanged().
+
+ // But we depend on that device context when adjusting the view size
+ // via mContentViewer->SetBounds(newBounds) below. So we need to
+ // explicitly tell it to check for changed resolution here.
+ if (presShell) {
+ RefPtr<nsPresContext> pc = presShell->GetPresContext();
+ if (pc->DeviceContext()->CheckDPIChange()) {
+ presShell->BackingScaleFactorChanged();
+ }
+ // Recompute zoom and text-zoom and such.
+ pc->RecomputeBrowsingContextDependentData();
+ }
+
+ nsViewManager* newVM = presShell ? presShell->GetViewManager() : nullptr;
+ nsView* newRootView = newVM ? newVM->GetRootView() : nullptr;
+
+ // Insert the new root view at the correct location in the view tree.
+ if (container) {
+ nsSubDocumentFrame* subDocFrame =
+ do_QueryFrame(container->GetPrimaryFrame());
+ rootViewParent = subDocFrame ? subDocFrame->EnsureInnerView() : nullptr;
+ } else {
+ rootViewParent = nullptr;
+ }
+ if (sibling && sibling->GetPresShell() &&
+ sibling->GetPresShell()->GetViewManager()) {
+ rootViewSibling = sibling->GetPresShell()->GetViewManager()->GetRootView();
+ } else {
+ rootViewSibling = nullptr;
+ }
+ if (rootViewParent && newRootView &&
+ newRootView->GetParent() != rootViewParent) {
+ nsViewManager* parentVM = rootViewParent->GetViewManager();
+ if (parentVM) {
+ // InsertChild(parent, child, sib, true) inserts the child after
+ // sib in content order, which is before sib in view order. BUT
+ // when sib is null it inserts at the end of the the document
+ // order, i.e., first in view order. But when oldRootSibling is
+ // null, the old root as at the end of the view list --- last in
+ // content order --- and we want to call InsertChild(parent, child,
+ // nullptr, false) in that case.
+ parentVM->InsertChild(rootViewParent, newRootView, rootViewSibling,
+ rootViewSibling ? true : false);
+
+ NS_ASSERTION(newRootView->GetNextSibling() == rootViewSibling,
+ "error in InsertChild");
+ }
+ }
+
+ nsCOMPtr<nsPIDOMWindowInner> privWinInner = privWin->GetCurrentInnerWindow();
+
+ // If parent is suspended, increase suspension count.
+ // This can't be done as early as event suppression since this
+ // depends on docshell tree.
+ privWinInner->SyncStateFromParentWindow();
+
+ // Now that all of the child docshells have been put into place, we can
+ // restart the timers for the window and all of the child frames.
+ privWinInner->Resume();
+
+ // Now that we have found the inner window of the page restored
+ // from the history, we have to make sure that
+ // performance.navigation.type is 2.
+ Performance* performance = privWinInner->GetPerformance();
+ if (performance) {
+ performance->GetDOMTiming()->NotifyRestoreStart();
+ }
+
+ // Restore the refresh URI list. The refresh timers will be restarted
+ // when EndPageLoad() is called.
+ mRefreshURIList = refreshURIList;
+
+ // Meta-refresh timers have been restarted for this shell, but not
+ // for our children. Walk the child shells and restart their timers.
+ for (auto* childDocLoader : mChildList.ForwardRange()) {
+ nsCOMPtr<nsIDocShell> child = do_QueryObject(childDocLoader);
+ if (child) {
+ child->ResumeRefreshURIs();
+ }
+ }
+
+ // Make sure this presentation is the same size as the previous
+ // presentation. If this is not the same size we showed it at last time,
+ // then we need to resize the widget.
+
+ // XXXbryner This interacts poorly with Firefox's infobar. If the old
+ // presentation had the infobar visible, then we will resize the new
+ // presentation to that smaller size. However, firing the locationchanged
+ // event will hide the infobar, which will immediately resize the window
+ // back to the larger size. A future optimization might be to restore
+ // the presentation at the "wrong" size, then fire the locationchanged
+ // event and check whether the docshell's new size is the same as the
+ // cached viewer size (skipping the resize if they are equal).
+
+ if (newRootView) {
+ if (!newBounds.IsEmpty() && !newBounds.IsEqualEdges(oldBounds)) {
+ MOZ_LOG(gPageCacheLog, LogLevel::Debug,
+ ("resize widget(%d, %d, %d, %d)", newBounds.x, newBounds.y,
+ newBounds.width, newBounds.height));
+ mContentViewer->SetBounds(newBounds);
+ } else {
+ nsIScrollableFrame* rootScrollFrame =
+ presShell->GetRootScrollFrameAsScrollable();
+ if (rootScrollFrame) {
+ rootScrollFrame->PostScrolledAreaEventForCurrentArea();
+ }
+ }
+ }
+
+ // The FinishRestore call below can kill these, null them out so we don't
+ // have invalid pointer lying around.
+ newRootView = rootViewSibling = rootViewParent = nullptr;
+ newVM = nullptr;
+
+ // If the IsUnderHiddenEmbedderElement() state has been changed, we need to
+ // update it.
+ if (oldPresShell && presShell &&
+ presShell->IsUnderHiddenEmbedderElement() !=
+ oldPresShell->IsUnderHiddenEmbedderElement()) {
+ presShell->SetIsUnderHiddenEmbedderElement(
+ oldPresShell->IsUnderHiddenEmbedderElement());
+ }
+
+ // Simulate the completion of the load.
+ nsDocShell::FinishRestore();
+
+ // Restart plugins, and paint the content.
+ if (presShell) {
+ presShell->Thaw();
+ }
+
+ return privWin->FireDelayedDOMEvents(true);
+}
+
+nsresult nsDocShell::CreateContentViewer(const nsACString& aContentType,
+ nsIRequest* aRequest,
+ nsIStreamListener** aContentHandler) {
+ if (DocGroup::TryToLoadIframesInBackground()) {
+ ResetToFirstLoad();
+ }
+
+ *aContentHandler = nullptr;
+
+ if (!mTreeOwner || mIsBeingDestroyed) {
+ // If we don't have a tree owner, then we're in the process of being
+ // destroyed. Rather than continue trying to load something, just give up.
+ return NS_ERROR_DOCSHELL_DYING;
+ }
+
+ if (!mBrowsingContext->AncestorsAreCurrent() ||
+ mBrowsingContext->IsInBFCache()) {
+ mBrowsingContext->RemoveRootFromBFCacheSync();
+ return NS_ERROR_NOT_AVAILABLE;
+ }
+
+ // Can we check the content type of the current content viewer
+ // and reuse it without destroying it and re-creating it?
+
+ NS_ASSERTION(mLoadGroup, "Someone ignored return from Init()?");
+
+ // Instantiate the content viewer object
+ nsCOMPtr<nsIContentViewer> viewer;
+ nsresult rv = NewContentViewerObj(aContentType, aRequest, mLoadGroup,
+ aContentHandler, getter_AddRefs(viewer));
+
+ if (NS_FAILED(rv)) {
+ return rv;
+ }
+
+ // Notify the current document that it is about to be unloaded!!
+ //
+ // It is important to fire the unload() notification *before* any state
+ // is changed within the DocShell - otherwise, javascript will get the
+ // wrong information :-(
+ //
+
+ if (mSavingOldViewer) {
+ // We determined that it was safe to cache the document presentation
+ // at the time we initiated the new load. We need to check whether
+ // it's still safe to do so, since there may have been DOM mutations
+ // or new requests initiated.
+ RefPtr<Document> doc = viewer->GetDocument();
+ mSavingOldViewer = CanSavePresentation(
+ mLoadType, aRequest, doc, /* aReportBFCacheComboTelemetry */ false);
+ }
+
+ NS_ASSERTION(!mLoadingURI, "Re-entering unload?");
+
+ nsCOMPtr<nsIChannel> aOpenedChannel = do_QueryInterface(aRequest);
+ if (aOpenedChannel) {
+ aOpenedChannel->GetURI(getter_AddRefs(mLoadingURI));
+ }
+
+ // Grab the current URI, we need to pass it to Embed, and OnNewURI will reset
+ // it before we do call Embed.
+ nsCOMPtr<nsIURI> previousURI = mCurrentURI;
+
+ FirePageHideNotification(!mSavingOldViewer);
+ if (mIsBeingDestroyed) {
+ // Force to stop the newly created orphaned viewer.
+ viewer->Stop();
+ return NS_ERROR_DOCSHELL_DYING;
+ }
+ mLoadingURI = nullptr;
+
+ // Set mFiredUnloadEvent = false so that the unload handler for the
+ // *new* document will fire.
+ mFiredUnloadEvent = false;
+
+ // we've created a new document so go ahead and call
+ // OnNewURI(), but don't fire OnLocationChange()
+ // notifications before we've called Embed(). See bug 284993.
+ mURIResultedInDocument = true;
+ bool errorOnLocationChangeNeeded = false;
+ nsCOMPtr<nsIChannel> failedChannel = mFailedChannel;
+ nsCOMPtr<nsIURI> failedURI;
+
+ if (mLoadType == LOAD_ERROR_PAGE) {
+ // We need to set the SH entry and our current URI here and not
+ // at the moment we load the page. We want the same behavior
+ // of Stop() as for a normal page load. See bug 514232 for details.
+
+ // Revert mLoadType to load type to state the page load failed,
+ // following function calls need it.
+ mLoadType = mFailedLoadType;
+
+ Document* doc = viewer->GetDocument();
+ if (doc) {
+ doc->SetFailedChannel(failedChannel);
+ }
+
+ nsCOMPtr<nsIPrincipal> triggeringPrincipal;
+ if (failedChannel) {
+ // Make sure we have a URI to set currentURI.
+ NS_GetFinalChannelURI(failedChannel, getter_AddRefs(failedURI));
+ } else {
+ // if there is no failed channel we have to explicitly provide
+ // a triggeringPrincipal for the history entry.
+ triggeringPrincipal = nsContentUtils::GetSystemPrincipal();
+ }
+
+ if (!failedURI) {
+ failedURI = mFailedURI;
+ }
+ if (!failedURI) {
+ // We need a URI object to store a session history entry, so make up a URI
+ NS_NewURI(getter_AddRefs(failedURI), "about:blank");
+ }
+
+ // When we don't have failedURI, something wrong will happen. See
+ // bug 291876.
+ MOZ_ASSERT(failedURI, "We don't have a URI for history APIs.");
+
+ mFailedChannel = nullptr;
+ mFailedURI = nullptr;
+
+ // Create an shistory entry for the old load.
+ if (failedURI) {
+ errorOnLocationChangeNeeded =
+ OnNewURI(failedURI, failedChannel, triggeringPrincipal, nullptr,
+ nullptr, nullptr, false, false, false);
+ }
+
+ // Be sure to have a correct mLSHE, it may have been cleared by
+ // EndPageLoad. See bug 302115.
+ ChildSHistory* shistory = GetSessionHistory();
+ if (!mozilla::SessionHistoryInParent() && shistory && !mLSHE) {
+ int32_t idx = shistory->LegacySHistory()->GetRequestedIndex();
+ if (idx == -1) {
+ idx = shistory->Index();
+ }
+ shistory->LegacySHistory()->GetEntryAtIndex(idx, getter_AddRefs(mLSHE));
+ }
+
+ mLoadType = LOAD_ERROR_PAGE;
+ }
+
+ nsCOMPtr<nsIURI> finalURI;
+ // If this a redirect, use the final url (uri)
+ // else use the original url
+ //
+ // Note that this should match what documents do (see Document::Reset).
+ NS_GetFinalChannelURI(aOpenedChannel, getter_AddRefs(finalURI));
+
+ bool onLocationChangeNeeded = false;
+ if (finalURI) {
+ // Pass false for aCloneSHChildren, since we're loading a new page here.
+ onLocationChangeNeeded =
+ OnNewURI(finalURI, aOpenedChannel, nullptr, nullptr, nullptr, nullptr,
+ false, true, false);
+ }
+
+ // let's try resetting the load group if we need to...
+ nsCOMPtr<nsILoadGroup> currentLoadGroup;
+ NS_ENSURE_SUCCESS(
+ aOpenedChannel->GetLoadGroup(getter_AddRefs(currentLoadGroup)),
+ NS_ERROR_FAILURE);
+
+ if (currentLoadGroup != mLoadGroup) {
+ nsLoadFlags loadFlags = 0;
+
+ // Cancel any URIs that are currently loading...
+ // XXX: Need to do this eventually Stop();
+ //
+ // Retarget the document to this loadgroup...
+ //
+ /* First attach the channel to the right loadgroup
+ * and then remove from the old loadgroup. This
+ * puts the notifications in the right order and
+ * we don't null-out mLSHE in OnStateChange() for
+ * all redirected urls
+ */
+ aOpenedChannel->SetLoadGroup(mLoadGroup);
+
+ // Mark the channel as being a document URI...
+ aOpenedChannel->GetLoadFlags(&loadFlags);
+ loadFlags |= nsIChannel::LOAD_DOCUMENT_URI;
+ nsCOMPtr<nsILoadInfo> loadInfo = aOpenedChannel->LoadInfo();
+ if (SandboxFlagsImplyCookies(loadInfo->GetSandboxFlags())) {
+ loadFlags |= nsIRequest::LOAD_DOCUMENT_NEEDS_COOKIE;
+ }
+
+ aOpenedChannel->SetLoadFlags(loadFlags);
+
+ mLoadGroup->AddRequest(aRequest, nullptr);
+ if (currentLoadGroup) {
+ currentLoadGroup->RemoveRequest(aRequest, nullptr, NS_BINDING_RETARGETED);
+ }
+
+ // Update the notification callbacks, so that progress and
+ // status information are sent to the right docshell...
+ aOpenedChannel->SetNotificationCallbacks(this);
+ }
+
+ if (DocGroup::TryToLoadIframesInBackground()) {
+ if ((!mContentViewer || GetDocument()->IsInitialDocument()) &&
+ IsSubframe()) {
+ // At this point, we know we just created a new iframe document based on
+ // the response from the server, and we check if it's a cross-domain
+ // iframe
+
+ RefPtr<Document> newDoc = viewer->GetDocument();
+
+ RefPtr<nsDocShell> parent = GetInProcessParentDocshell();
+ nsCOMPtr<nsIPrincipal> parentPrincipal =
+ parent->GetDocument()->NodePrincipal();
+ nsCOMPtr<nsIPrincipal> thisPrincipal = newDoc->NodePrincipal();
+
+ SiteIdentifier parentSite;
+ SiteIdentifier thisSite;
+
+ nsresult rv =
+ BasePrincipal::Cast(parentPrincipal)->GetSiteIdentifier(parentSite);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ rv = BasePrincipal::Cast(thisPrincipal)->GetSiteIdentifier(thisSite);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ if (!parentSite.Equals(thisSite)) {
+ if (profiler_thread_is_being_profiled_for_markers()) {
+ nsCOMPtr<nsIURI> prinURI;
+ BasePrincipal::Cast(thisPrincipal)->GetURI(getter_AddRefs(prinURI));
+ nsPrintfCString marker(
+ "Iframe loaded in background: %s",
+ nsContentUtils::TruncatedURLForDisplay(prinURI).get());
+ PROFILER_MARKER_TEXT("Background Iframe", DOM, {}, marker);
+ }
+ SetBackgroundLoadIframe();
+ }
+ }
+ }
+
+ NS_ENSURE_SUCCESS(Embed(viewer, nullptr, false,
+ ShouldAddToSessionHistory(finalURI, aOpenedChannel),
+ aOpenedChannel, previousURI),
+ NS_ERROR_FAILURE);
+
+ if (!mBrowsingContext->GetHasLoadedNonInitialDocument()) {
+ MOZ_ALWAYS_SUCCEEDS(mBrowsingContext->SetHasLoadedNonInitialDocument(true));
+ }
+
+ if (TreatAsBackgroundLoad()) {
+ nsCOMPtr<nsIRunnable> triggerParentCheckDocShell =
+ NewRunnableMethod("nsDocShell::TriggerParentCheckDocShellIsEmpty", this,
+ &nsDocShell::TriggerParentCheckDocShellIsEmpty);
+ nsresult rv = NS_DispatchToCurrentThread(triggerParentCheckDocShell);
+ NS_ENSURE_SUCCESS(rv, rv);
+ }
+
+ mSavedRefreshURIList = nullptr;
+ mSavingOldViewer = false;
+ mEODForCurrentDocument = false;
+
+ // if this document is part of a multipart document,
+ // the ID can be used to distinguish it from the other parts.
+ nsCOMPtr<nsIMultiPartChannel> multiPartChannel(do_QueryInterface(aRequest));
+ if (multiPartChannel) {
+ if (PresShell* presShell = GetPresShell()) {
+ if (Document* doc = presShell->GetDocument()) {
+ uint32_t partID;
+ multiPartChannel->GetPartID(&partID);
+ doc->SetPartID(partID);
+ }
+ }
+ }
+
+ if (errorOnLocationChangeNeeded) {
+ FireOnLocationChange(this, failedChannel, failedURI,
+ LOCATION_CHANGE_ERROR_PAGE);
+ } else if (onLocationChangeNeeded) {
+ uint32_t locationFlags =
+ (mLoadType & LOAD_CMD_RELOAD) ? uint32_t(LOCATION_CHANGE_RELOAD) : 0;
+ FireOnLocationChange(this, aRequest, mCurrentURI, locationFlags);
+ }
+
+ return NS_OK;
+}
+
+nsresult nsDocShell::NewContentViewerObj(const nsACString& aContentType,
+ nsIRequest* aRequest,
+ nsILoadGroup* aLoadGroup,
+ nsIStreamListener** aContentHandler,
+ nsIContentViewer** aViewer) {
+ nsCOMPtr<nsIChannel> aOpenedChannel = do_QueryInterface(aRequest);
+
+ nsCOMPtr<nsIDocumentLoaderFactory> docLoaderFactory =
+ nsContentUtils::FindInternalContentViewer(aContentType);
+ if (!docLoaderFactory) {
+ return NS_ERROR_FAILURE;
+ }
+
+ // Now create an instance of the content viewer nsLayoutDLF makes the
+ // determination if it should be a "view-source" instead of "view"
+ nsresult rv = docLoaderFactory->CreateInstance(
+ "view", aOpenedChannel, aLoadGroup, aContentType, this, nullptr,
+ aContentHandler, aViewer);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ (*aViewer)->SetContainer(this);
+ return NS_OK;
+}
+
+nsresult nsDocShell::SetupNewViewer(nsIContentViewer* aNewViewer,
+ WindowGlobalChild* aWindowActor) {
+ MOZ_ASSERT(!mIsBeingDestroyed);
+
+ //
+ // Copy content viewer state from previous or parent content viewer.
+ //
+ // The following logic is mirrored in nsHTMLDocument::StartDocumentLoad!
+ //
+ // Do NOT to maintain a reference to the old content viewer outside
+ // of this "copying" block, or it will not be destroyed until the end of
+ // this routine and all <SCRIPT>s and event handlers fail! (bug 20315)
+ //
+ // In this block of code, if we get an error result, we return it
+ // but if we get a null pointer, that's perfectly legal for parent
+ // and parentContentViewer.
+ //
+
+ int32_t x = 0;
+ int32_t y = 0;
+ int32_t cx = 0;
+ int32_t cy = 0;
+
+ // This will get the size from the current content viewer or from the
+ // Init settings
+ DoGetPositionAndSize(&x, &y, &cx, &cy);
+
+ nsCOMPtr<nsIDocShellTreeItem> parentAsItem;
+ NS_ENSURE_SUCCESS(GetInProcessSameTypeParent(getter_AddRefs(parentAsItem)),
+ NS_ERROR_FAILURE);
+ nsCOMPtr<nsIDocShell> parent(do_QueryInterface(parentAsItem));
+
+ const Encoding* reloadEncoding = nullptr;
+ int32_t reloadEncodingSource = kCharsetUninitialized;
+ // |newMUDV| also serves as a flag to set the data from the above vars
+ nsCOMPtr<nsIContentViewer> newCv;
+
+ if (mContentViewer || parent) {
+ nsCOMPtr<nsIContentViewer> oldCv;
+ if (mContentViewer) {
+ // Get any interesting state from old content viewer
+ // XXX: it would be far better to just reuse the document viewer ,
+ // since we know we're just displaying the same document as before
+ oldCv = mContentViewer;
+
+ // Tell the old content viewer to hibernate in session history when
+ // it is destroyed.
+
+ if (mSavingOldViewer && NS_FAILED(CaptureState())) {
+ if (mOSHE) {
+ mOSHE->SyncPresentationState();
+ }
+ mSavingOldViewer = false;
+ }
+ } else {
+ // No old content viewer, so get state from parent's content viewer
+ parent->GetContentViewer(getter_AddRefs(oldCv));
+ }
+
+ if (oldCv) {
+ newCv = aNewViewer;
+ if (newCv) {
+ reloadEncoding =
+ oldCv->GetReloadEncodingAndSource(&reloadEncodingSource);
+ }
+ }
+ }
+
+ nscolor bgcolor = NS_RGBA(0, 0, 0, 0);
+ bool isUnderHiddenEmbedderElement = false;
+ // Ensure that the content viewer is destroyed *after* the GC - bug 71515
+ nsCOMPtr<nsIContentViewer> contentViewer = mContentViewer;
+ if (contentViewer) {
+ // Stop any activity that may be happening in the old document before
+ // releasing it...
+ contentViewer->Stop();
+
+ // Try to extract the canvas background color from the old
+ // presentation shell, so we can use it for the next document.
+ if (PresShell* presShell = contentViewer->GetPresShell()) {
+ bgcolor = presShell->GetCanvasBackground();
+ isUnderHiddenEmbedderElement = presShell->IsUnderHiddenEmbedderElement();
+ }
+
+ contentViewer->Close(mSavingOldViewer ? mOSHE.get() : nullptr);
+ aNewViewer->SetPreviousViewer(contentViewer);
+ }
+ if (mOSHE && (!mContentViewer || !mSavingOldViewer)) {
+ // We don't plan to save a viewer in mOSHE; tell it to drop
+ // any other state it's holding.
+ mOSHE->SyncPresentationState();
+ }
+
+ mContentViewer = nullptr;
+
+ // Now that we're about to switch documents, forget all of our children.
+ // Note that we cached them as needed up in CaptureState above.
+ DestroyChildren();
+
+ mContentViewer = aNewViewer;
+
+ nsCOMPtr<nsIWidget> widget;
+ NS_ENSURE_SUCCESS(GetMainWidget(getter_AddRefs(widget)), NS_ERROR_FAILURE);
+
+ nsIntRect bounds(x, y, cx, cy);
+
+ mContentViewer->SetNavigationTiming(mTiming);
+
+ if (NS_FAILED(mContentViewer->Init(widget, bounds, aWindowActor))) {
+ nsCOMPtr<nsIContentViewer> viewer = mContentViewer;
+ viewer->Close(nullptr);
+ viewer->Destroy();
+ mContentViewer = nullptr;
+ mCurrentURI = nullptr;
+ NS_WARNING("ContentViewer Initialization failed");
+ return NS_ERROR_FAILURE;
+ }
+
+ // If we have old state to copy, set the old state onto the new content
+ // viewer
+ if (newCv) {
+ newCv->SetReloadEncodingAndSource(reloadEncoding, reloadEncodingSource);
+ }
+
+ NS_ENSURE_TRUE(mContentViewer, NS_ERROR_FAILURE);
+
+ // Stuff the bgcolor from the old pres shell into the new
+ // pres shell. This improves page load continuity.
+ if (RefPtr<PresShell> presShell = mContentViewer->GetPresShell()) {
+ presShell->SetCanvasBackground(bgcolor);
+ presShell->ActivenessMaybeChanged();
+ if (isUnderHiddenEmbedderElement) {
+ presShell->SetIsUnderHiddenEmbedderElement(isUnderHiddenEmbedderElement);
+ }
+ }
+
+ // XXX: It looks like the LayoutState gets restored again in Embed()
+ // right after the call to SetupNewViewer(...)
+
+ // We don't show the mContentViewer yet, since we want to draw the old page
+ // until we have enough of the new page to show. Just return with the new
+ // viewer still set to hidden.
+
+ return NS_OK;
+}
+
+void nsDocShell::SetDocCurrentStateObj(nsISHEntry* aShEntry,
+ SessionHistoryInfo* aInfo) {
+ NS_ENSURE_TRUE_VOID(mContentViewer);
+
+ RefPtr<Document> document = GetDocument();
+ NS_ENSURE_TRUE_VOID(document);
+
+ nsCOMPtr<nsIStructuredCloneContainer> scContainer;
+ if (mozilla::SessionHistoryInParent()) {
+ // If aInfo is null, just set the document's state object to null.
+ if (aInfo) {
+ scContainer = aInfo->GetStateData();
+ }
+ MOZ_LOG(gSHLog, LogLevel::Debug,
+ ("nsDocShell %p SetCurrentDocState %p", this, scContainer.get()));
+ } else {
+ if (aShEntry) {
+ scContainer = aShEntry->GetStateData();
+
+ // If aShEntry is null, just set the document's state object to null.
+ }
+ }
+
+ // It's OK for scContainer too be null here; that just means there's no
+ // state data associated with this history entry.
+ document->SetStateObject(scContainer);
+}
+
+nsresult nsDocShell::CheckLoadingPermissions() {
+ // This method checks whether the caller may load content into
+ // this docshell. Even though we've done our best to hide windows
+ // from code that doesn't have the right to access them, it's
+ // still possible for an evil site to open a window and access
+ // frames in the new window through window.frames[] (which is
+ // allAccess for historic reasons), so we still need to do this
+ // check on load.
+ nsresult rv = NS_OK;
+
+ if (!IsSubframe()) {
+ // We're not a frame. Permit all loads.
+ return rv;
+ }
+
+ // Note - The check for a current JSContext here isn't necessarily sensical.
+ // It's just designed to preserve the old semantics during a mass-conversion
+ // patch.
+ if (!nsContentUtils::GetCurrentJSContext()) {
+ return NS_OK;
+ }
+
+ // Check if the caller is from the same origin as this docshell,
+ // or any of its ancestors.
+ for (RefPtr<BrowsingContext> bc = mBrowsingContext; bc;
+ bc = bc->GetParent()) {
+ // If the BrowsingContext is not in process, then it
+ // is true by construction that its principal will not
+ // subsume the current docshell principal.
+ if (!bc->IsInProcess()) {
+ continue;
+ }
+
+ nsCOMPtr<nsIScriptGlobalObject> sgo =
+ bc->GetDocShell()->GetScriptGlobalObject();
+ nsCOMPtr<nsIScriptObjectPrincipal> sop(do_QueryInterface(sgo));
+
+ nsIPrincipal* p;
+ if (!sop || !(p = sop->GetPrincipal())) {
+ return NS_ERROR_UNEXPECTED;
+ }
+
+ if (nsContentUtils::SubjectPrincipal()->Subsumes(p)) {
+ // Same origin, permit load
+ return NS_OK;
+ }
+ }
+
+ return NS_ERROR_DOM_PROP_ACCESS_DENIED;
+}
+
+//*****************************************************************************
+// nsDocShell: Site Loading
+//*****************************************************************************
+
+void nsDocShell::CopyFavicon(nsIURI* aOldURI, nsIURI* aNewURI,
+ bool aInPrivateBrowsing) {
+ if (XRE_IsContentProcess()) {
+ dom::ContentChild* contentChild = dom::ContentChild::GetSingleton();
+ if (contentChild) {
+ contentChild->SendCopyFavicon(aOldURI, aNewURI, aInPrivateBrowsing);
+ }
+ return;
+ }
+
+#ifdef MOZ_PLACES
+ nsCOMPtr<nsIFaviconService> favSvc =
+ do_GetService("@mozilla.org/browser/favicon-service;1");
+ if (favSvc) {
+ favSvc->CopyFavicons(aOldURI, aNewURI,
+ aInPrivateBrowsing
+ ? nsIFaviconService::FAVICON_LOAD_PRIVATE
+ : nsIFaviconService::FAVICON_LOAD_NON_PRIVATE,
+ nullptr);
+ }
+#endif
+}
+
+class InternalLoadEvent : public Runnable {
+ public:
+ InternalLoadEvent(nsDocShell* aDocShell, nsDocShellLoadState* aLoadState)
+ : mozilla::Runnable("InternalLoadEvent"),
+ mDocShell(aDocShell),
+ mLoadState(aLoadState) {
+ // For events, both target and filename should be the version of "null" they
+ // expect. By the time the event is fired, both window targeting and file
+ // downloading have been handled, so we should never have an internal load
+ // event that retargets or had a download.
+ mLoadState->SetTarget(u""_ns);
+ mLoadState->SetFileName(VoidString());
+ }
+
+ NS_IMETHOD
+ Run() override {
+#ifndef ANDROID
+ MOZ_ASSERT(mLoadState->TriggeringPrincipal(),
+ "InternalLoadEvent: Should always have a principal here");
+#endif
+ return mDocShell->InternalLoad(mLoadState);
+ }
+
+ private:
+ RefPtr<nsDocShell> mDocShell;
+ RefPtr<nsDocShellLoadState> mLoadState;
+};
+
+/**
+ * Returns true if we started an asynchronous load (i.e., from the network), but
+ * the document we're loading there hasn't yet become this docshell's active
+ * document.
+ *
+ * When JustStartedNetworkLoad is true, you should be careful about modifying
+ * mLoadType and mLSHE. These are both set when the asynchronous load first
+ * starts, and the load expects that, when it eventually runs InternalLoad,
+ * mLoadType and mLSHE will have their original values.
+ */
+bool nsDocShell::JustStartedNetworkLoad() {
+ return mDocumentRequest && mDocumentRequest != GetCurrentDocChannel();
+}
+
+// The contentType will be INTERNAL_(I)FRAME if this docshell is for a
+// non-toplevel browsing context in spec terms. (frame, iframe, <object>,
+// <embed>, etc)
+//
+// This return value will be used when we call NS_CheckContentLoadPolicy, and
+// later when we call DoURILoad.
+nsContentPolicyType nsDocShell::DetermineContentType() {
+ if (!IsSubframe()) {
+ return nsIContentPolicy::TYPE_DOCUMENT;
+ }
+
+ const auto& maybeEmbedderElementType =
+ GetBrowsingContext()->GetEmbedderElementType();
+ if (!maybeEmbedderElementType) {
+ // If the EmbedderElementType hasn't been set yet, just assume we're
+ // an iframe since that's more common.
+ return nsIContentPolicy::TYPE_INTERNAL_IFRAME;
+ }
+
+ return maybeEmbedderElementType->EqualsLiteral("iframe")
+ ? nsIContentPolicy::TYPE_INTERNAL_IFRAME
+ : nsIContentPolicy::TYPE_INTERNAL_FRAME;
+}
+
+bool nsDocShell::NoopenerForceEnabled() {
+ // If current's top-level browsing context's active document's
+ // cross-origin-opener-policy is "same-origin" or "same-origin + COEP" then
+ // if currentDoc's origin is not same origin with currentDoc's top-level
+ // origin, noopener is force enabled, and name is cleared to "_blank".
+ auto topPolicy = mBrowsingContext->Top()->GetOpenerPolicy();
+ return (topPolicy == nsILoadInfo::OPENER_POLICY_SAME_ORIGIN ||
+ topPolicy ==
+ nsILoadInfo::
+ OPENER_POLICY_SAME_ORIGIN_EMBEDDER_POLICY_REQUIRE_CORP) &&
+ !mBrowsingContext->SameOriginWithTop();
+}
+
+nsresult nsDocShell::PerformRetargeting(nsDocShellLoadState* aLoadState) {
+ MOZ_ASSERT(aLoadState, "need a load state!");
+ MOZ_ASSERT(!aLoadState->Target().IsEmpty(), "should have a target here!");
+ MOZ_ASSERT(aLoadState->TargetBrowsingContext().IsNull(),
+ "should not have picked target yet");
+
+ nsresult rv = NS_OK;
+ RefPtr<BrowsingContext> targetContext;
+
+ // Only _self, _parent, and _top are supported in noopener case. But we
+ // have to be careful to not apply that to the noreferrer case. See bug
+ // 1358469.
+ bool allowNamedTarget =
+ !aLoadState->HasInternalLoadFlags(INTERNAL_LOAD_FLAGS_NO_OPENER) ||
+ aLoadState->HasInternalLoadFlags(INTERNAL_LOAD_FLAGS_DONT_SEND_REFERRER);
+ if (allowNamedTarget ||
+ aLoadState->Target().LowerCaseEqualsLiteral("_self") ||
+ aLoadState->Target().LowerCaseEqualsLiteral("_parent") ||
+ aLoadState->Target().LowerCaseEqualsLiteral("_top")) {
+ Document* document = GetDocument();
+ NS_ENSURE_TRUE(document, NS_ERROR_FAILURE);
+ WindowGlobalChild* wgc = document->GetWindowGlobalChild();
+ NS_ENSURE_TRUE(wgc, NS_ERROR_FAILURE);
+ targetContext = wgc->FindBrowsingContextWithName(
+ aLoadState->Target(), /* aUseEntryGlobalForAccessCheck */ false);
+ }
+
+ if (!targetContext) {
+ // If the targetContext doesn't exist, then this is a new docShell and we
+ // should consider this a TYPE_DOCUMENT load
+ //
+ // For example, when target="_blank"
+
+ // If there's no targetContext, that means we are about to create a new
+ // window. Perform a content policy check before creating the window. Please
+ // note for all other docshell loads content policy checks are performed
+ // within the contentSecurityManager when the channel is about to be
+ // openend.
+ nsISupports* requestingContext = nullptr;
+ if (XRE_IsContentProcess()) {
+ // In e10s the child process doesn't have access to the element that
+ // contains the browsing context (because that element is in the chrome
+ // process). So we just pass mScriptGlobal.
+ requestingContext = ToSupports(mScriptGlobal);
+ } else {
+ // This is for loading non-e10s tabs and toplevel windows of various
+ // sorts.
+ // For the toplevel window cases, requestingElement will be null.
+ nsCOMPtr<Element> requestingElement =
+ mScriptGlobal->GetFrameElementInternal();
+ requestingContext = requestingElement;
+ }
+
+ // Ideally we should use the same loadinfo as within DoURILoad which
+ // should match this one when both are applicable.
+ nsCOMPtr<nsILoadInfo> secCheckLoadInfo =
+ new LoadInfo(mScriptGlobal, aLoadState->URI(),
+ aLoadState->TriggeringPrincipal(), requestingContext,
+ nsILoadInfo::SEC_ONLY_FOR_EXPLICIT_CONTENTSEC_CHECK, 0);
+
+ // Since Content Policy checks are performed within docShell as well as
+ // the ContentSecurityManager we need a reliable way to let certain
+ // nsIContentPolicy consumers ignore duplicate calls.
+ secCheckLoadInfo->SetSkipContentPolicyCheckForWebRequest(true);
+
+ int16_t shouldLoad = nsIContentPolicy::ACCEPT;
+ rv = NS_CheckContentLoadPolicy(aLoadState->URI(), secCheckLoadInfo,
+ ""_ns, // mime guess
+ &shouldLoad);
+
+ if (NS_FAILED(rv) || NS_CP_REJECTED(shouldLoad)) {
+ if (NS_SUCCEEDED(rv)) {
+ if (shouldLoad == nsIContentPolicy::REJECT_TYPE) {
+ return NS_ERROR_CONTENT_BLOCKED_SHOW_ALT;
+ }
+ if (shouldLoad == nsIContentPolicy::REJECT_POLICY) {
+ return NS_ERROR_BLOCKED_BY_POLICY;
+ }
+ }
+
+ return NS_ERROR_CONTENT_BLOCKED;
+ }
+ }
+
+ //
+ // Resolve the window target before going any further...
+ // If the load has been targeted to another DocShell, then transfer the
+ // load to it...
+ //
+
+ // We've already done our owner-inheriting. Mask out that bit, so we
+ // don't try inheriting an owner from the target window if we came up
+ // with a null owner above.
+ aLoadState->UnsetInternalLoadFlag(INTERNAL_LOAD_FLAGS_INHERIT_PRINCIPAL);
+
+ if (!targetContext) {
+ // If the docshell's document is sandboxed, only open a new window
+ // if the document's SANDBOXED_AUXILLARY_NAVIGATION flag is not set.
+ // (i.e. if allow-popups is specified)
+ NS_ENSURE_TRUE(mContentViewer, NS_ERROR_FAILURE);
+ Document* doc = mContentViewer->GetDocument();
+
+ const bool isDocumentAuxSandboxed =
+ doc && (doc->GetSandboxFlags() & SANDBOXED_AUXILIARY_NAVIGATION);
+
+ if (isDocumentAuxSandboxed) {
+ return NS_ERROR_DOM_INVALID_ACCESS_ERR;
+ }
+
+ nsCOMPtr<nsPIDOMWindowOuter> win = GetWindow();
+ NS_ENSURE_TRUE(win, NS_ERROR_NOT_AVAILABLE);
+
+ RefPtr<BrowsingContext> newBC;
+ nsAutoCString spec;
+ aLoadState->URI()->GetSpec(spec);
+
+ // If we are a noopener load, we just hand the whole thing over to our
+ // window.
+ if (aLoadState->HasInternalLoadFlags(INTERNAL_LOAD_FLAGS_NO_OPENER) ||
+ NoopenerForceEnabled()) {
+ // Various asserts that we know to hold because NO_OPENER loads can only
+ // happen for links.
+ MOZ_ASSERT(!aLoadState->LoadReplace());
+ MOZ_ASSERT(aLoadState->PrincipalToInherit() ==
+ aLoadState->TriggeringPrincipal());
+ MOZ_ASSERT(!(aLoadState->InternalLoadFlags() &
+ ~(INTERNAL_LOAD_FLAGS_NO_OPENER |
+ INTERNAL_LOAD_FLAGS_DONT_SEND_REFERRER)),
+ "Only INTERNAL_LOAD_FLAGS_NO_OPENER and "
+ "INTERNAL_LOAD_FLAGS_DONT_SEND_REFERRER can be set");
+ MOZ_ASSERT_IF(aLoadState->PostDataStream(),
+ aLoadState->IsFormSubmission());
+ MOZ_ASSERT(!aLoadState->HeadersStream());
+ // If OnLinkClickSync was invoked inside the onload handler, the load
+ // type would be set to LOAD_NORMAL_REPLACE; otherwise it should be
+ // LOAD_LINK.
+ MOZ_ASSERT(aLoadState->LoadType() == LOAD_LINK ||
+ aLoadState->LoadType() == LOAD_NORMAL_REPLACE);
+ MOZ_ASSERT(!aLoadState->LoadIsFromSessionHistory());
+ MOZ_ASSERT(aLoadState->FirstParty()); // Windowwatcher will assume this.
+
+ RefPtr<nsDocShellLoadState> loadState =
+ new nsDocShellLoadState(aLoadState->URI());
+
+ // Set up our loadinfo so it will do the load as much like we would have
+ // as possible.
+ loadState->SetReferrerInfo(aLoadState->GetReferrerInfo());
+ loadState->SetOriginalURI(aLoadState->OriginalURI());
+
+ Maybe<nsCOMPtr<nsIURI>> resultPrincipalURI;
+ aLoadState->GetMaybeResultPrincipalURI(resultPrincipalURI);
+
+ loadState->SetMaybeResultPrincipalURI(resultPrincipalURI);
+ loadState->SetKeepResultPrincipalURIIfSet(
+ aLoadState->KeepResultPrincipalURIIfSet());
+ // LoadReplace will always be false due to asserts above, skip setting
+ // it.
+ loadState->SetTriggeringPrincipal(aLoadState->TriggeringPrincipal());
+ loadState->SetTriggeringSandboxFlags(
+ aLoadState->TriggeringSandboxFlags());
+ loadState->SetCsp(aLoadState->Csp());
+ loadState->SetInheritPrincipal(aLoadState->HasInternalLoadFlags(
+ INTERNAL_LOAD_FLAGS_INHERIT_PRINCIPAL));
+ // Explicit principal because we do not want any guesses as to what the
+ // principal to inherit is: it should be aTriggeringPrincipal.
+ loadState->SetPrincipalIsExplicit(true);
+ loadState->SetLoadType(LOAD_LINK);
+ loadState->SetForceAllowDataURI(aLoadState->HasInternalLoadFlags(
+ INTERNAL_LOAD_FLAGS_FORCE_ALLOW_DATA_URI));
+
+ loadState->SetHasValidUserGestureActivation(
+ aLoadState->HasValidUserGestureActivation());
+
+ // Propagate POST data to the new load.
+ loadState->SetPostDataStream(aLoadState->PostDataStream());
+ loadState->SetIsFormSubmission(aLoadState->IsFormSubmission());
+
+ rv = win->Open(NS_ConvertUTF8toUTF16(spec),
+ aLoadState->Target(), // window name
+ u""_ns, // Features
+ loadState,
+ true, // aForceNoOpener
+ getter_AddRefs(newBC));
+ MOZ_ASSERT(!newBC);
+ return rv;
+ }
+
+ rv = win->OpenNoNavigate(NS_ConvertUTF8toUTF16(spec),
+ aLoadState->Target(), // window name
+ u""_ns, // Features
+ getter_AddRefs(newBC));
+
+ // In some cases the Open call doesn't actually result in a new
+ // window being opened. We can detect these cases by examining the
+ // document in |newBC|, if any.
+ nsCOMPtr<nsPIDOMWindowOuter> piNewWin =
+ newBC ? newBC->GetDOMWindow() : nullptr;
+ if (piNewWin) {
+ RefPtr<Document> newDoc = piNewWin->GetExtantDoc();
+ if (!newDoc || newDoc->IsInitialDocument()) {
+ aLoadState->SetInternalLoadFlag(INTERNAL_LOAD_FLAGS_FIRST_LOAD);
+ }
+ }
+
+ if (newBC) {
+ targetContext = newBC;
+ }
+ }
+ NS_ENSURE_SUCCESS(rv, rv);
+ NS_ENSURE_TRUE(targetContext, rv);
+
+ // If our target BrowsingContext is still pending initialization, ignore the
+ // navigation request targeting it.
+ if (NS_WARN_IF(targetContext->GetPendingInitialization())) {
+ return NS_OK;
+ }
+
+ aLoadState->SetTargetBrowsingContext(targetContext);
+ //
+ // Transfer the load to the target BrowsingContext... Clear the window target
+ // name to the empty string to prevent recursive retargeting!
+ //
+ // No window target
+ aLoadState->SetTarget(u""_ns);
+ // No forced download
+ aLoadState->SetFileName(VoidString());
+ return targetContext->InternalLoad(aLoadState);
+}
+
+static nsAutoCString RefMaybeNull(nsIURI* aURI) {
+ nsAutoCString result;
+ if (NS_FAILED(aURI->GetRef(result))) {
+ result.SetIsVoid(true);
+ }
+ return result;
+}
+
+uint32_t nsDocShell::GetSameDocumentNavigationFlags(nsIURI* aNewURI) {
+ uint32_t flags = LOCATION_CHANGE_SAME_DOCUMENT;
+
+ bool equal = false;
+ if (mCurrentURI &&
+ NS_SUCCEEDED(mCurrentURI->EqualsExceptRef(aNewURI, &equal)) && equal &&
+ RefMaybeNull(mCurrentURI) != RefMaybeNull(aNewURI)) {
+ flags |= LOCATION_CHANGE_HASHCHANGE;
+ }
+
+ return flags;
+}
+
+bool nsDocShell::IsSameDocumentNavigation(nsDocShellLoadState* aLoadState,
+ SameDocumentNavigationState& aState) {
+ MOZ_ASSERT(aLoadState);
+ if (!(aLoadState->LoadType() == LOAD_NORMAL ||
+ aLoadState->LoadType() == LOAD_STOP_CONTENT ||
+ LOAD_TYPE_HAS_FLAGS(aLoadState->LoadType(),
+ LOAD_FLAGS_REPLACE_HISTORY) ||
+ aLoadState->LoadType() == LOAD_HISTORY ||
+ aLoadState->LoadType() == LOAD_LINK)) {
+ return false;
+ }
+
+ nsCOMPtr<nsIURI> currentURI = mCurrentURI;
+
+ nsresult rvURINew = aLoadState->URI()->GetRef(aState.mNewHash);
+ if (NS_SUCCEEDED(rvURINew)) {
+ rvURINew = aLoadState->URI()->GetHasRef(&aState.mNewURIHasRef);
+ }
+
+ if (currentURI && NS_SUCCEEDED(rvURINew)) {
+ nsresult rvURIOld = currentURI->GetRef(aState.mCurrentHash);
+ if (NS_SUCCEEDED(rvURIOld)) {
+ rvURIOld = currentURI->GetHasRef(&aState.mCurrentURIHasRef);
+ }
+ if (NS_SUCCEEDED(rvURIOld)) {
+ if (NS_FAILED(currentURI->EqualsExceptRef(aLoadState->URI(),
+ &aState.mSameExceptHashes))) {
+ aState.mSameExceptHashes = false;
+ }
+ }
+ }
+
+ if (!aState.mSameExceptHashes && currentURI && NS_SUCCEEDED(rvURINew)) {
+ // Maybe aLoadState->URI() came from the exposable form of currentURI?
+ nsCOMPtr<nsIURI> currentExposableURI =
+ nsIOService::CreateExposableURI(currentURI);
+ nsresult rvURIOld = currentExposableURI->GetRef(aState.mCurrentHash);
+ if (NS_SUCCEEDED(rvURIOld)) {
+ rvURIOld = currentExposableURI->GetHasRef(&aState.mCurrentURIHasRef);
+ }
+ if (NS_SUCCEEDED(rvURIOld)) {
+ if (NS_FAILED(currentExposableURI->EqualsExceptRef(
+ aLoadState->URI(), &aState.mSameExceptHashes))) {
+ aState.mSameExceptHashes = false;
+ }
+ // HTTPS-Only Mode upgrades schemes from http to https in Necko, hence we
+ // have to perform a special check here to avoid an actual navigation. If
+ // HTTPS-Only Mode is enabled and the two URIs are same-origin (modulo the
+ // fact that the new URI is currently http), then set mSameExceptHashes to
+ // true and only perform a fragment navigation.
+ if (!aState.mSameExceptHashes) {
+ if (nsCOMPtr<nsIChannel> docChannel = GetCurrentDocChannel()) {
+ nsCOMPtr<nsILoadInfo> docLoadInfo = docChannel->LoadInfo();
+ if (!docLoadInfo->GetLoadErrorPage() &&
+ nsHTTPSOnlyUtils::IsEqualURIExceptSchemeAndRef(
+ currentExposableURI, aLoadState->URI(), docLoadInfo)) {
+ uint32_t status = docLoadInfo->GetHttpsOnlyStatus();
+ if (status & (nsILoadInfo::HTTPS_ONLY_UPGRADED_LISTENER_REGISTERED |
+ nsILoadInfo::HTTPS_ONLY_UPGRADED_HTTPS_FIRST)) {
+ // At this point the requested URI is for sure a fragment
+ // navigation via HTTP and HTTPS-Only mode or HTTPS-First is
+ // enabled. Also it is not interfering the upgrade order of
+ // https://searchfox.org/mozilla-central/source/netwerk/base/nsNetUtil.cpp#2948-2953.
+ // Since we are on an HTTPS site the fragment
+ // navigation should also be an HTTPS.
+ // For that reason we should upgrade the URI to HTTPS.
+ aState.mSecureUpgradeURI = true;
+ aState.mSameExceptHashes = true;
+ }
+ }
+ }
+ }
+ }
+ }
+
+ if (mozilla::SessionHistoryInParent()) {
+ if (mActiveEntry && aLoadState->LoadIsFromSessionHistory()) {
+ aState.mHistoryNavBetweenSameDoc = mActiveEntry->SharesDocumentWith(
+ aLoadState->GetLoadingSessionHistoryInfo()->mInfo);
+ }
+ MOZ_LOG(gSHLog, LogLevel::Debug,
+ ("nsDocShell::IsSameDocumentNavigation %p NavBetweenSameDoc=%d",
+ this, aState.mHistoryNavBetweenSameDoc));
+ } else {
+ if (mOSHE && aLoadState->LoadIsFromSessionHistory()) {
+ // We're doing a history load.
+
+ mOSHE->SharesDocumentWith(aLoadState->SHEntry(),
+ &aState.mHistoryNavBetweenSameDoc);
+ }
+ }
+
+ // A same document navigation happens when we navigate between two SHEntries
+ // for the same document. We do a same document navigation under two
+ // circumstances. Either
+ //
+ // a) we're navigating between two different SHEntries which share a
+ // document, or
+ //
+ // b) we're navigating to a new shentry whose URI differs from the
+ // current URI only in its hash, the new hash is non-empty, and
+ // we're not doing a POST.
+ //
+ // The restriction that the SHEntries in (a) must be different ensures
+ // that history.go(0) and the like trigger full refreshes, rather than
+ // same document navigations.
+ if (!mozilla::SessionHistoryInParent()) {
+ bool doSameDocumentNavigation =
+ (aState.mHistoryNavBetweenSameDoc && mOSHE != aLoadState->SHEntry()) ||
+ (!aLoadState->SHEntry() && !aLoadState->PostDataStream() &&
+ aState.mSameExceptHashes && aState.mNewURIHasRef);
+ MOZ_LOG(gSHLog, LogLevel::Debug,
+ ("nsDocShell %p NavBetweenSameDoc=%d is same doc = %d", this,
+ aState.mHistoryNavBetweenSameDoc, doSameDocumentNavigation));
+ return doSameDocumentNavigation;
+ }
+
+ if (aState.mHistoryNavBetweenSameDoc &&
+ !aLoadState->GetLoadingSessionHistoryInfo()->mLoadingCurrentEntry) {
+ return true;
+ }
+
+ MOZ_LOG(
+ gSHLog, LogLevel::Debug,
+ ("nsDocShell::IsSameDocumentNavigation %p !LoadIsFromSessionHistory=%s "
+ "!PostDataStream: %s mSameExceptHashes: %s mNewURIHasRef: %s",
+ this, !aLoadState->LoadIsFromSessionHistory() ? "true" : "false",
+ !aLoadState->PostDataStream() ? "true" : "false",
+ aState.mSameExceptHashes ? "true" : "false",
+ aState.mNewURIHasRef ? "true" : "false"));
+ return !aLoadState->LoadIsFromSessionHistory() &&
+ !aLoadState->PostDataStream() && aState.mSameExceptHashes &&
+ aState.mNewURIHasRef;
+}
+
+nsresult nsDocShell::HandleSameDocumentNavigation(
+ nsDocShellLoadState* aLoadState, SameDocumentNavigationState& aState) {
+#ifdef DEBUG
+ SameDocumentNavigationState state;
+ MOZ_ASSERT(IsSameDocumentNavigation(aLoadState, state));
+#endif
+
+ MOZ_LOG(gSHLog, LogLevel::Debug,
+ ("nsDocShell::HandleSameDocumentNavigation %p %s -> %s", this,
+ mCurrentURI->GetSpecOrDefault().get(),
+ aLoadState->URI()->GetSpecOrDefault().get()));
+
+ RefPtr<Document> doc = GetDocument();
+ NS_ENSURE_TRUE(doc, NS_ERROR_FAILURE);
+ doc->DoNotifyPossibleTitleChange();
+
+ nsCOMPtr<nsIURI> currentURI = mCurrentURI;
+
+ // We need to upgrade the new URI from http: to https:
+ nsCOMPtr<nsIURI> newURI = aLoadState->URI();
+ if (aState.mSecureUpgradeURI) {
+ MOZ_TRY(NS_GetSecureUpgradedURI(aLoadState->URI(), getter_AddRefs(newURI)));
+ MOZ_LOG(gSHLog, LogLevel::Debug,
+ ("Upgraded URI to %s", newURI->GetSpecOrDefault().get()));
+ }
+
+#ifdef DEBUG
+ if (aState.mSameExceptHashes) {
+ bool sameExceptHashes = false;
+ currentURI->EqualsExceptRef(newURI, &sameExceptHashes);
+ MOZ_ASSERT(sameExceptHashes);
+ }
+#endif
+
+ // Save the position of the scrollers.
+ nsPoint scrollPos = GetCurScrollPos();
+
+ // Reset mLoadType to its original value once we exit this block, because this
+ // same document navigation might have started after a normal, network load,
+ // and we don't want to clobber its load type. See bug 737307.
+ AutoRestore<uint32_t> loadTypeResetter(mLoadType);
+
+ // If a non-same-document-navigation (i.e., a network load) is pending, make
+ // this a replacement load, so that we don't add a SHEntry here and the
+ // network load goes into the SHEntry it expects to.
+ if (JustStartedNetworkLoad() && (aLoadState->LoadType() & LOAD_CMD_NORMAL)) {
+ mLoadType = LOAD_NORMAL_REPLACE;
+ } else {
+ mLoadType = aLoadState->LoadType();
+ }
+
+ mURIResultedInDocument = true;
+
+ nsCOMPtr<nsISHEntry> oldLSHE = mLSHE;
+
+ // we need to assign aLoadState->SHEntry() to mLSHE right here, so that on
+ // History loads, SetCurrentURI() called from OnNewURI() will send proper
+ // onLocationChange() notifications to the browser to update back/forward
+ // buttons.
+ SetHistoryEntryAndUpdateBC(Some<nsISHEntry*>(aLoadState->SHEntry()),
+ Nothing());
+ UniquePtr<mozilla::dom::LoadingSessionHistoryInfo> oldLoadingEntry;
+ mLoadingEntry.swap(oldLoadingEntry);
+ if (aLoadState->GetLoadingSessionHistoryInfo()) {
+ mLoadingEntry = MakeUnique<LoadingSessionHistoryInfo>(
+ *aLoadState->GetLoadingSessionHistoryInfo());
+ mNeedToReportActiveAfterLoadingBecomesActive = false;
+ }
+
+ // Set the doc's URI according to the new history entry's URI.
+ doc->SetDocumentURI(newURI);
+
+ /* This is a anchor traversal within the same page.
+ * call OnNewURI() so that, this traversal will be
+ * recorded in session and global history.
+ */
+ nsCOMPtr<nsIPrincipal> newURITriggeringPrincipal, newURIPrincipalToInherit,
+ newURIPartitionedPrincipalToInherit;
+ nsCOMPtr<nsIContentSecurityPolicy> newCsp;
+ if (mozilla::SessionHistoryInParent() ? !!mActiveEntry : !!mOSHE) {
+ if (mozilla::SessionHistoryInParent()) {
+ newURITriggeringPrincipal = mActiveEntry->GetTriggeringPrincipal();
+ newURIPrincipalToInherit = mActiveEntry->GetPrincipalToInherit();
+ newURIPartitionedPrincipalToInherit =
+ mActiveEntry->GetPartitionedPrincipalToInherit();
+ newCsp = mActiveEntry->GetCsp();
+ } else {
+ newURITriggeringPrincipal = mOSHE->GetTriggeringPrincipal();
+ newURIPrincipalToInherit = mOSHE->GetPrincipalToInherit();
+ newURIPartitionedPrincipalToInherit =
+ mOSHE->GetPartitionedPrincipalToInherit();
+ newCsp = mOSHE->GetCsp();
+ }
+ } else {
+ newURITriggeringPrincipal = aLoadState->TriggeringPrincipal();
+ newURIPrincipalToInherit = doc->NodePrincipal();
+ newURIPartitionedPrincipalToInherit = doc->PartitionedPrincipal();
+ newCsp = doc->GetCsp();
+ }
+
+ uint32_t locationChangeFlags = GetSameDocumentNavigationFlags(newURI);
+
+ // Pass true for aCloneSHChildren, since we're not
+ // changing documents here, so all of our subframes are
+ // still relevant to the new session history entry.
+ //
+ // It also makes OnNewURI(...) set LOCATION_CHANGE_SAME_DOCUMENT
+ // flag on firing onLocationChange(...).
+ // Anyway, aCloneSHChildren param is simply reflecting
+ // doSameDocumentNavigation in this scope.
+ //
+ // Note: we'll actually fire onLocationChange later, in order to preserve
+ // ordering of HistoryCommit() in the parent vs onLocationChange (bug
+ // 1668126)
+ bool locationChangeNeeded = OnNewURI(
+ newURI, nullptr, newURITriggeringPrincipal, newURIPrincipalToInherit,
+ newURIPartitionedPrincipalToInherit, newCsp, false, true, true);
+
+ nsCOMPtr<nsIInputStream> postData;
+ uint32_t cacheKey = 0;
+
+ bool scrollRestorationIsManual = false;
+ if (!mozilla::SessionHistoryInParent()) {
+ if (mOSHE) {
+ /* save current position of scroller(s) (bug 59774) */
+ mOSHE->SetScrollPosition(scrollPos.x, scrollPos.y);
+ scrollRestorationIsManual = mOSHE->GetScrollRestorationIsManual();
+ // Get the postdata and page ident from the current page, if
+ // the new load is being done via normal means. Note that
+ // "normal means" can be checked for just by checking for
+ // LOAD_CMD_NORMAL, given the loadType and allowScroll check
+ // above -- it filters out some LOAD_CMD_NORMAL cases that we
+ // wouldn't want here.
+ if (aLoadState->LoadType() & LOAD_CMD_NORMAL) {
+ postData = mOSHE->GetPostData();
+ cacheKey = mOSHE->GetCacheKey();
+ }
+
+ // Link our new SHEntry to the old SHEntry's back/forward
+ // cache data, since the two SHEntries correspond to the
+ // same document.
+ if (mLSHE) {
+ if (!aLoadState->LoadIsFromSessionHistory()) {
+ // If we're not doing a history load, scroll restoration
+ // should be inherited from the previous session history entry.
+ SetScrollRestorationIsManualOnHistoryEntry(mLSHE,
+ scrollRestorationIsManual);
+ }
+ mLSHE->AdoptBFCacheEntry(mOSHE);
+ }
+ }
+ } else {
+ if (mActiveEntry) {
+ mActiveEntry->SetScrollPosition(scrollPos.x, scrollPos.y);
+ if (mBrowsingContext) {
+ CollectWireframe();
+ if (XRE_IsParentProcess()) {
+ SessionHistoryEntry* entry =
+ mBrowsingContext->Canonical()->GetActiveSessionHistoryEntry();
+ if (entry) {
+ entry->SetScrollPosition(scrollPos.x, scrollPos.y);
+ }
+ } else {
+ mozilla::Unused << ContentChild::GetSingleton()
+ ->SendSessionHistoryEntryScrollPosition(
+ mBrowsingContext, scrollPos.x,
+ scrollPos.y);
+ }
+ }
+ }
+ if (mLoadingEntry) {
+ if (!mLoadingEntry->mLoadIsFromSessionHistory) {
+ // If we're not doing a history load, scroll restoration
+ // should be inherited from the previous session history entry.
+ // XXX This needs most probably tweaks once fragment navigation is
+ // fixed to work with session-history-in-parent.
+ SetScrollRestorationIsManualOnHistoryEntry(nullptr,
+ scrollRestorationIsManual);
+ }
+ }
+ }
+
+ // If we're doing a history load, use its scroll restoration state.
+ if (aLoadState->LoadIsFromSessionHistory()) {
+ if (mozilla::SessionHistoryInParent()) {
+ scrollRestorationIsManual = aLoadState->GetLoadingSessionHistoryInfo()
+ ->mInfo.GetScrollRestorationIsManual();
+ } else {
+ scrollRestorationIsManual =
+ aLoadState->SHEntry()->GetScrollRestorationIsManual();
+ }
+ }
+
+ /* Assign mLSHE to mOSHE. This will either be a new entry created
+ * by OnNewURI() for normal loads or aLoadState->SHEntry() for history
+ * loads.
+ */
+ if (!mozilla::SessionHistoryInParent()) {
+ if (mLSHE) {
+ SetHistoryEntryAndUpdateBC(Nothing(), Some<nsISHEntry*>(mLSHE));
+ // Save the postData obtained from the previous page
+ // in to the session history entry created for the
+ // anchor page, so that any history load of the anchor
+ // page will restore the appropriate postData.
+ if (postData) {
+ mOSHE->SetPostData(postData);
+ }
+
+ // Make sure we won't just repost without hitting the
+ // cache first
+ if (cacheKey != 0) {
+ mOSHE->SetCacheKey(cacheKey);
+ }
+ }
+
+ /* Set the title for the SH entry for this target url so that
+ * SH menus in go/back/forward buttons won't be empty for this.
+ * Note, this happens on mOSHE (and mActiveEntry in the future) because of
+ * the code above.
+ * Note, when session history lives in the parent process, this does not
+ * update the title there.
+ */
+ SetTitleOnHistoryEntry(false);
+ } else {
+ if (aLoadState->LoadIsFromSessionHistory()) {
+ MOZ_LOG(
+ gSHLog, LogLevel::Debug,
+ ("Moving the loading entry to the active entry on nsDocShell %p to "
+ "%s",
+ this, mLoadingEntry->mInfo.GetURI()->GetSpecOrDefault().get()));
+
+ nsCOMPtr<nsILayoutHistoryState> currentLayoutHistoryState;
+ if (mActiveEntry) {
+ currentLayoutHistoryState = mActiveEntry->GetLayoutHistoryState();
+ }
+
+ UniquePtr<SessionHistoryInfo> previousActiveEntry(mActiveEntry.release());
+ mActiveEntry = MakeUnique<SessionHistoryInfo>(mLoadingEntry->mInfo);
+ if (currentLayoutHistoryState) {
+ // Restore the existing nsILayoutHistoryState object, since it is
+ // possibly being used by the layout. When doing a new load, the
+ // shared state is copied from the existing active entry, so this
+ // special case is needed only with the history loads.
+ mActiveEntry->SetLayoutHistoryState(currentLayoutHistoryState);
+ }
+
+ if (cacheKey != 0) {
+ mActiveEntry->SetCacheKey(cacheKey);
+ }
+ // We're passing in mCurrentURI, which could be null. SessionHistoryCommit
+ // does require a non-null uri if this is for a refresh load of the same
+ // URI, but in that case mCurrentURI won't be null here.
+ mBrowsingContext->SessionHistoryCommit(
+ *mLoadingEntry, mLoadType, mCurrentURI, previousActiveEntry.get(),
+ true, true,
+ /* No expiration update on the same document loads*/
+ false, cacheKey);
+ // FIXME Need to set postdata.
+
+ // Set the title for the SH entry for this target url so that
+ // SH menus in go/back/forward buttons won't be empty for this.
+ // Note, when session history lives in the parent process, this does not
+ // update the title there.
+ SetTitleOnHistoryEntry(false);
+ } else {
+ Maybe<bool> scrollRestorationIsManual;
+ if (mActiveEntry) {
+ scrollRestorationIsManual.emplace(
+ mActiveEntry->GetScrollRestorationIsManual());
+
+ // Get the postdata and page ident from the current page, if the new
+ // load is being done via normal means. Note that "normal means" can be
+ // checked for just by checking for LOAD_CMD_NORMAL, given the loadType
+ // and allowScroll check above -- it filters out some LOAD_CMD_NORMAL
+ // cases that we wouldn't want here.
+ if (aLoadState->LoadType() & LOAD_CMD_NORMAL) {
+ postData = mActiveEntry->GetPostData();
+ cacheKey = mActiveEntry->GetCacheKey();
+ }
+ }
+
+ MOZ_LOG(gSHLog, LogLevel::Debug,
+ ("Creating an active entry on nsDocShell %p to %s", this,
+ newURI->GetSpecOrDefault().get()));
+ if (mActiveEntry) {
+ mActiveEntry = MakeUnique<SessionHistoryInfo>(*mActiveEntry, newURI);
+ } else {
+ mActiveEntry = MakeUnique<SessionHistoryInfo>(
+ newURI, newURITriggeringPrincipal, newURIPrincipalToInherit,
+ newURIPartitionedPrincipalToInherit, newCsp, mContentTypeHint);
+ }
+
+ // Save the postData obtained from the previous page in to the session
+ // history entry created for the anchor page, so that any history load of
+ // the anchor page will restore the appropriate postData.
+ if (postData) {
+ mActiveEntry->SetPostData(postData);
+ }
+
+ // Make sure we won't just repost without hitting the
+ // cache first
+ if (cacheKey != 0) {
+ mActiveEntry->SetCacheKey(cacheKey);
+ }
+
+ // Set the title for the SH entry for this target url so that
+ // SH menus in go/back/forward buttons won't be empty for this.
+ mActiveEntry->SetTitle(mTitle);
+
+ if (scrollRestorationIsManual.isSome()) {
+ mActiveEntry->SetScrollRestorationIsManual(
+ scrollRestorationIsManual.value());
+ }
+
+ if (LOAD_TYPE_HAS_FLAGS(mLoadType, LOAD_FLAGS_REPLACE_HISTORY)) {
+ mBrowsingContext->ReplaceActiveSessionHistoryEntry(mActiveEntry.get());
+ } else {
+ mBrowsingContext->IncrementHistoryEntryCountForBrowsingContext();
+ // FIXME We should probably just compute mChildOffset in the parent
+ // instead of passing it over IPC here.
+ mBrowsingContext->SetActiveSessionHistoryEntry(
+ Some(scrollPos), mActiveEntry.get(), mLoadType, cacheKey);
+ // FIXME Do we need to update mPreviousEntryIndex and mLoadedEntryIndex?
+ }
+ }
+ }
+
+ if (locationChangeNeeded) {
+ FireOnLocationChange(this, nullptr, newURI, locationChangeFlags);
+ }
+
+ /* Restore the original LSHE if we were loading something
+ * while same document navigation was initiated.
+ */
+ SetHistoryEntryAndUpdateBC(Some<nsISHEntry*>(oldLSHE), Nothing());
+ mLoadingEntry.swap(oldLoadingEntry);
+
+ /* Set the title for the Global History entry for this anchor url.
+ */
+ UpdateGlobalHistoryTitle(newURI);
+
+ SetDocCurrentStateObj(mOSHE, mActiveEntry.get());
+
+ // Inform the favicon service that the favicon for oldURI also
+ // applies to newURI.
+ CopyFavicon(currentURI, newURI, UsePrivateBrowsing());
+
+ RefPtr<nsGlobalWindowOuter> scriptGlobal = mScriptGlobal;
+ RefPtr<nsGlobalWindowInner> win =
+ scriptGlobal ? scriptGlobal->GetCurrentInnerWindowInternal() : nullptr;
+
+ // ScrollToAnchor doesn't necessarily cause us to scroll the window;
+ // the function decides whether a scroll is appropriate based on the
+ // arguments it receives. But even if we don't end up scrolling,
+ // ScrollToAnchor performs other important tasks, such as informing
+ // the presShell that we have a new hash. See bug 680257.
+ nsresult rv = ScrollToAnchor(aState.mCurrentURIHasRef, aState.mNewURIHasRef,
+ aState.mNewHash, aLoadState->LoadType());
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ /* restore previous position of scroller(s), if we're moving
+ * back in history (bug 59774)
+ */
+ nscoord bx = 0;
+ nscoord by = 0;
+ bool needsScrollPosUpdate = false;
+ if ((mozilla::SessionHistoryInParent() ? !!mActiveEntry : !!mOSHE) &&
+ (aLoadState->LoadType() == LOAD_HISTORY ||
+ aLoadState->LoadType() == LOAD_RELOAD_NORMAL) &&
+ !scrollRestorationIsManual) {
+ needsScrollPosUpdate = true;
+ if (mozilla::SessionHistoryInParent()) {
+ mActiveEntry->GetScrollPosition(&bx, &by);
+ } else {
+ mOSHE->GetScrollPosition(&bx, &by);
+ }
+ }
+
+ // Dispatch the popstate and hashchange events, as appropriate.
+ //
+ // The event dispatch below can cause us to re-enter script and
+ // destroy the docshell, nulling out mScriptGlobal. Hold a stack
+ // reference to avoid null derefs. See bug 914521.
+ if (win) {
+ // Fire a hashchange event URIs differ, and only in their hashes.
+ bool doHashchange = aState.mSameExceptHashes &&
+ (aState.mCurrentURIHasRef != aState.mNewURIHasRef ||
+ !aState.mCurrentHash.Equals(aState.mNewHash));
+
+ if (aState.mHistoryNavBetweenSameDoc || doHashchange) {
+ win->DispatchSyncPopState();
+ }
+
+ if (needsScrollPosUpdate && win->HasActiveDocument()) {
+ SetCurScrollPosEx(bx, by);
+ }
+
+ if (doHashchange) {
+ // Note that currentURI hasn't changed because it's on the
+ // stack, so we can just use it directly as the old URI.
+ win->DispatchAsyncHashchange(currentURI, newURI);
+ }
+ }
+
+ return NS_OK;
+}
+
+static bool NavigationShouldTakeFocus(nsDocShell* aDocShell,
+ nsDocShellLoadState* aLoadState) {
+ if (!aLoadState->AllowFocusMove()) {
+ return false;
+ }
+ if (!aLoadState->HasValidUserGestureActivation()) {
+ return false;
+ }
+ const auto& sourceBC = aLoadState->SourceBrowsingContext();
+ if (!sourceBC || !sourceBC->IsActive()) {
+ // If the navigation didn't come from a foreground tab, then we don't steal
+ // focus.
+ return false;
+ }
+ auto* bc = aDocShell->GetBrowsingContext();
+ if (sourceBC.get() == bc) {
+ // If it comes from the same tab / frame, don't steal focus either.
+ return false;
+ }
+ auto* fm = nsFocusManager::GetFocusManager();
+ if (fm && bc->IsActive() && fm->IsInActiveWindow(bc)) {
+ // If we're already on the foreground tab of the foreground window, then we
+ // don't need to do this. This helps to e.g. not steal focus from the
+ // browser chrome unnecessarily.
+ return false;
+ }
+ if (auto* doc = aDocShell->GetExtantDocument()) {
+ if (doc->IsInitialDocument()) {
+ // If we're the initial load for the browsing context, the browser
+ // chrome determines what to focus. This is important because the
+ // browser chrome may want to e.g focus the url-bar
+ return false;
+ }
+ }
+ // Take loadDivertedInBackground into account so the behavior would be the
+ // same as how the tab first opened.
+ return !Preferences::GetBool("browser.tabs.loadDivertedInBackground", false);
+}
+
+nsresult nsDocShell::InternalLoad(nsDocShellLoadState* aLoadState,
+ Maybe<uint32_t> aCacheKey) {
+ MOZ_ASSERT(aLoadState, "need a load state!");
+ MOZ_ASSERT(aLoadState->TriggeringPrincipal(),
+ "need a valid TriggeringPrincipal");
+
+ if (!aLoadState->TriggeringPrincipal()) {
+ MOZ_ASSERT(false, "InternalLoad needs a valid triggeringPrincipal");
+ return NS_ERROR_FAILURE;
+ }
+ if (NS_WARN_IF(mBrowsingContext->GetPendingInitialization())) {
+ return NS_ERROR_NOT_AVAILABLE;
+ }
+
+ const bool shouldTakeFocus = NavigationShouldTakeFocus(this, aLoadState);
+
+ mOriginalUriString.Truncate();
+
+ MOZ_LOG(gDocShellLeakLog, LogLevel::Debug,
+ ("DOCSHELL %p InternalLoad %s\n", this,
+ aLoadState->URI()->GetSpecOrDefault().get()));
+
+ NS_ENSURE_TRUE(IsValidLoadType(aLoadState->LoadType()), NS_ERROR_INVALID_ARG);
+
+ // Cancel loads coming from Docshells that are being destroyed.
+ if (mIsBeingDestroyed) {
+ return NS_ERROR_NOT_AVAILABLE;
+ }
+
+ nsresult rv = EnsureScriptEnvironment();
+ if (NS_FAILED(rv)) {
+ return rv;
+ }
+
+ // If we have a target to move to, do that now.
+ if (!aLoadState->Target().IsEmpty()) {
+ return PerformRetargeting(aLoadState);
+ }
+
+ if (aLoadState->TargetBrowsingContext().IsNull()) {
+ aLoadState->SetTargetBrowsingContext(GetBrowsingContext());
+ }
+
+ MOZ_DIAGNOSTIC_ASSERT(
+ aLoadState->TargetBrowsingContext() == GetBrowsingContext(),
+ "Load must be targeting this BrowsingContext");
+
+ MOZ_TRY(CheckDisallowedJavascriptLoad(aLoadState));
+
+ // If we don't have a target, we're loading into ourselves, and our load
+ // delegate may want to intercept that load.
+ SameDocumentNavigationState sameDocumentNavigationState;
+ bool sameDocument =
+ IsSameDocumentNavigation(aLoadState, sameDocumentNavigationState) &&
+ !aLoadState->GetPendingRedirectedChannel();
+
+ // Note: We do this check both here and in BrowsingContext::
+ // LoadURI/InternalLoad, since document-specific sandbox flags are only
+ // available in the process triggering the load, and we don't want the target
+ // process to have to trust the triggering process to do the appropriate
+ // checks for the BrowsingContext's sandbox flags.
+ MOZ_TRY(mBrowsingContext->CheckSandboxFlags(aLoadState));
+
+ NS_ENSURE_STATE(!HasUnloadedParent());
+
+ rv = CheckLoadingPermissions();
+ if (NS_FAILED(rv)) {
+ return rv;
+ }
+
+ if (mFiredUnloadEvent) {
+ if (IsOKToLoadURI(aLoadState->URI())) {
+ MOZ_ASSERT(aLoadState->Target().IsEmpty(),
+ "Shouldn't have a window target here!");
+
+ // If this is a replace load, make whatever load triggered
+ // the unload event also a replace load, so we don't
+ // create extra history entries.
+ if (LOAD_TYPE_HAS_FLAGS(aLoadState->LoadType(),
+ LOAD_FLAGS_REPLACE_HISTORY)) {
+ mLoadType = LOAD_NORMAL_REPLACE;
+ }
+
+ // Do this asynchronously
+ nsCOMPtr<nsIRunnable> ev = new InternalLoadEvent(this, aLoadState);
+ return Dispatch(TaskCategory::Other, ev.forget());
+ }
+
+ // Just ignore this load attempt
+ return NS_OK;
+ }
+
+ // If we are loading a URI that should inherit a security context (basically
+ // javascript: at this point), and the caller has said that principal
+ // inheritance is allowed, there are a few possible cases:
+ //
+ // 1) We are provided with the principal to inherit. In that case, we just use
+ // it.
+ //
+ // 2) The load is coming from some other application. In this case we don't
+ // want to inherit from whatever document we have loaded now, since the
+ // load is unrelated to it.
+ //
+ // 3) It's a load from our application, but does not provide an explicit
+ // principal to inherit. In that case, we want to inherit the principal of
+ // our current document, or of our parent document (if any) if we don't
+ // have a current document.
+ {
+ bool inherits;
+
+ if (!aLoadState->HasLoadFlags(LOAD_FLAGS_FROM_EXTERNAL) &&
+ !aLoadState->PrincipalToInherit() &&
+ (aLoadState->HasInternalLoadFlags(
+ INTERNAL_LOAD_FLAGS_INHERIT_PRINCIPAL)) &&
+ NS_SUCCEEDED(nsContentUtils::URIInheritsSecurityContext(
+ aLoadState->URI(), &inherits)) &&
+ inherits) {
+ aLoadState->SetPrincipalToInherit(GetInheritedPrincipal(true));
+ }
+ // If principalToInherit is still null (e.g. if some of the conditions of
+ // were not satisfied), then no inheritance of any sort will happen: the
+ // load will just get a principal based on the URI being loaded.
+ }
+
+ // If this docshell is owned by a frameloader, make sure to cancel
+ // possible frameloader initialization before loading a new page.
+ nsCOMPtr<nsIDocShellTreeItem> parent = GetInProcessParentDocshell();
+ if (parent) {
+ RefPtr<Document> doc = parent->GetDocument();
+ if (doc) {
+ doc->TryCancelFrameLoaderInitialization(this);
+ }
+ }
+
+ // Before going any further vet loads initiated by external programs.
+ if (aLoadState->HasLoadFlags(LOAD_FLAGS_FROM_EXTERNAL)) {
+ MOZ_DIAGNOSTIC_ASSERT(aLoadState->LoadType() == LOAD_NORMAL);
+
+ // Disallow external chrome: loads targetted at content windows
+ if (SchemeIsChrome(aLoadState->URI())) {
+ NS_WARNING("blocked external chrome: url -- use '--chrome' option");
+ return NS_ERROR_FAILURE;
+ }
+
+ // clear the decks to prevent context bleed-through (bug 298255)
+ rv = CreateAboutBlankContentViewer(nullptr, nullptr, nullptr, nullptr,
+ /* aIsInitialDocument */ false);
+ if (NS_FAILED(rv)) {
+ return NS_ERROR_FAILURE;
+ }
+ }
+
+ mAllowKeywordFixup = aLoadState->HasInternalLoadFlags(
+ INTERNAL_LOAD_FLAGS_ALLOW_THIRD_PARTY_FIXUP);
+ mURIResultedInDocument = false; // reset the clock...
+
+ // See if this is actually a load between two history entries for the same
+ // document. If the process fails, or if we successfully navigate within the
+ // same document, return.
+ if (sameDocument) {
+ nsresult rv =
+ HandleSameDocumentNavigation(aLoadState, sameDocumentNavigationState);
+ NS_ENSURE_SUCCESS(rv, rv);
+ if (shouldTakeFocus) {
+ mBrowsingContext->Focus(CallerType::System, IgnoreErrors());
+ }
+ return rv;
+ }
+
+ // mContentViewer->PermitUnload can destroy |this| docShell, which
+ // causes the next call of CanSavePresentation to crash.
+ // Hold onto |this| until we return, to prevent a crash from happening.
+ // (bug#331040)
+ nsCOMPtr<nsIDocShell> kungFuDeathGrip(this);
+
+ // Don't init timing for javascript:, since it generally doesn't
+ // actually start a load or anything. If it does, we'll init
+ // timing then, from OnStateChange.
+
+ // XXXbz mTiming should know what channel it's for, so we don't
+ // need this hackery.
+ bool toBeReset = false;
+ bool isJavaScript = SchemeIsJavascript(aLoadState->URI());
+
+ if (!isJavaScript) {
+ toBeReset = MaybeInitTiming();
+ }
+ bool isNotDownload = aLoadState->FileName().IsVoid();
+ if (mTiming && isNotDownload) {
+ mTiming->NotifyBeforeUnload();
+ }
+ // Check if the page doesn't want to be unloaded. The javascript:
+ // protocol handler deals with this for javascript: URLs.
+ if (!isJavaScript && isNotDownload &&
+ !aLoadState->NotifiedBeforeUnloadListeners() && mContentViewer) {
+ bool okToUnload;
+
+ // Check if request is exempted from HTTPSOnlyMode and if https-first is
+ // enabled, if so it means:
+ // * https-first failed to upgrade request to https
+ // * we already asked for permission to unload and the user accepted
+ // otherwise we wouldn't be here.
+ bool isPrivateWin = GetOriginAttributes().mPrivateBrowsingId > 0;
+ bool isHistoryOrReload = false;
+ uint32_t loadType = aLoadState->LoadType();
+
+ // Check if request is a reload.
+ if (loadType == LOAD_RELOAD_NORMAL ||
+ loadType == LOAD_RELOAD_BYPASS_CACHE ||
+ loadType == LOAD_RELOAD_BYPASS_PROXY ||
+ loadType == LOAD_RELOAD_BYPASS_PROXY_AND_CACHE ||
+ loadType == LOAD_HISTORY) {
+ isHistoryOrReload = true;
+ }
+
+ // If it isn't a reload, the request already failed to be upgraded and
+ // https-first is enabled then don't ask the user again for permission to
+ // unload and just unload.
+ if (!isHistoryOrReload && aLoadState->IsExemptFromHTTPSOnlyMode() &&
+ nsHTTPSOnlyUtils::IsHttpsFirstModeEnabled(isPrivateWin)) {
+ rv = mContentViewer->PermitUnload(
+ nsIContentViewer::PermitUnloadAction::eDontPromptAndUnload,
+ &okToUnload);
+ } else {
+ rv = mContentViewer->PermitUnload(&okToUnload);
+ }
+
+ if (NS_SUCCEEDED(rv) && !okToUnload) {
+ // The user chose not to unload the page, interrupt the
+ // load.
+ MaybeResetInitTiming(toBeReset);
+ return NS_OK;
+ }
+ }
+
+ if (mTiming && isNotDownload) {
+ mTiming->NotifyUnloadAccepted(mCurrentURI);
+ }
+
+ // In e10s, in the parent process, we refuse to load anything other than
+ // "safe" resources that we ship or trust enough to give "special" URLs.
+ // Similar check will be performed by the ParentProcessDocumentChannel if in
+ // use.
+ if (XRE_IsE10sParentProcess() &&
+ !DocumentChannel::CanUseDocumentChannel(aLoadState->URI()) &&
+ !CanLoadInParentProcess(aLoadState->URI())) {
+ return NS_ERROR_FAILURE;
+ }
+
+ // Whenever a top-level browsing context is navigated, the user agent MUST
+ // lock the orientation of the document to the document's default
+ // orientation. We don't explicitly check for a top-level browsing context
+ // here because orientation is only set on top-level browsing contexts.
+ if (mBrowsingContext->GetOrientationLock() != hal::ScreenOrientation::None) {
+ MOZ_ASSERT(mBrowsingContext->IsTop());
+ MOZ_ALWAYS_SUCCEEDS(
+ mBrowsingContext->SetOrientationLock(hal::ScreenOrientation::None));
+ if (mBrowsingContext->IsActive()) {
+ ScreenOrientation::UpdateActiveOrientationLock(
+ hal::ScreenOrientation::None);
+ }
+ }
+
+ // Check for saving the presentation here, before calling Stop().
+ // This is necessary so that we can catch any pending requests.
+ // Since the new request has not been created yet, we pass null for the
+ // new request parameter.
+ // Also pass nullptr for the document, since it doesn't affect the return
+ // value for our purposes here.
+ bool savePresentation =
+ CanSavePresentation(aLoadState->LoadType(), nullptr, nullptr,
+ /* aReportBFCacheComboTelemetry */ true);
+
+ // nsDocShell::CanSavePresentation is for non-SHIP version only. Do a
+ // separate check for SHIP so that we know if there are ongoing requests
+ // before calling Stop() below.
+ if (mozilla::SessionHistoryInParent()) {
+ Document* document = GetDocument();
+ uint32_t flags = 0;
+ if (document && !document->CanSavePresentation(nullptr, flags, true)) {
+ // This forces some flags into the WindowGlobalParent's mBFCacheStatus,
+ // which we'll then use in CanonicalBrowsingContext::AllowedInBFCache,
+ // and in particular we'll store BFCacheStatus::REQUEST if needed.
+ // Also, we want to report all the flags to the parent process here (and
+ // not just BFCacheStatus::NOT_ALLOWED), so that it can update the
+ // telemetry data correctly.
+ document->DisallowBFCaching(flags);
+ }
+ }
+
+ // Don't stop current network activity for javascript: URL's since
+ // they might not result in any data, and thus nothing should be
+ // stopped in those cases. In the case where they do result in
+ // data, the javascript: URL channel takes care of stopping
+ // current network activity.
+ if (!isJavaScript && isNotDownload) {
+ // Stop any current network activity.
+ // Also stop content if this is a zombie doc. otherwise
+ // the onload will be delayed by other loads initiated in the
+ // background by the first document that
+ // didn't fully load before the next load was initiated.
+ // If not a zombie, don't stop content until data
+ // starts arriving from the new URI...
+
+ if ((mContentViewer && mContentViewer->GetPreviousViewer()) ||
+ LOAD_TYPE_HAS_FLAGS(aLoadState->LoadType(), LOAD_FLAGS_STOP_CONTENT)) {
+ rv = Stop(nsIWebNavigation::STOP_ALL);
+ } else {
+ rv = Stop(nsIWebNavigation::STOP_NETWORK);
+ }
+
+ if (NS_FAILED(rv)) {
+ return rv;
+ }
+ }
+
+ mLoadType = aLoadState->LoadType();
+
+ // aLoadState->SHEntry() should be assigned to mLSHE, only after Stop() has
+ // been called. But when loading an error page, do not clear the
+ // mLSHE for the real page.
+ if (mLoadType != LOAD_ERROR_PAGE) {
+ SetHistoryEntryAndUpdateBC(Some<nsISHEntry*>(aLoadState->SHEntry()),
+ Nothing());
+ if (aLoadState->LoadIsFromSessionHistory() &&
+ !mozilla::SessionHistoryInParent()) {
+ // We're making history navigation or a reload. Make sure our history ID
+ // points to the same ID as SHEntry's docshell ID.
+ nsID historyID = {};
+ aLoadState->SHEntry()->GetDocshellID(historyID);
+
+ Unused << mBrowsingContext->SetHistoryID(historyID);
+ }
+ }
+
+ mSavingOldViewer = savePresentation;
+
+ // If we have a saved content viewer in history, restore and show it now.
+ if (aLoadState->LoadIsFromSessionHistory() &&
+ (mLoadType & LOAD_CMD_HISTORY)) {
+ // https://html.spec.whatwg.org/#history-traversal:
+ // To traverse the history
+ // "If entry has a different Document object than the current entry, then
+ // run the following substeps: Remove any tasks queued by the history
+ // traversal task source..."
+ // Same document object case was handled already above with
+ // HandleSameDocumentNavigation call.
+ RefPtr<ChildSHistory> shistory = GetRootSessionHistory();
+ if (shistory) {
+ shistory->RemovePendingHistoryNavigations();
+ }
+ if (!mozilla::SessionHistoryInParent()) {
+ // It's possible that the previous viewer of mContentViewer is the
+ // viewer that will end up in aLoadState->SHEntry() when it gets closed.
+ // If that's the case, we need to go ahead and force it into its shentry
+ // so we can restore it.
+ if (mContentViewer) {
+ nsCOMPtr<nsIContentViewer> prevViewer =
+ mContentViewer->GetPreviousViewer();
+ if (prevViewer) {
+#ifdef DEBUG
+ nsCOMPtr<nsIContentViewer> prevPrevViewer =
+ prevViewer->GetPreviousViewer();
+ NS_ASSERTION(!prevPrevViewer, "Should never have viewer chain here");
+#endif
+ nsCOMPtr<nsISHEntry> viewerEntry;
+ prevViewer->GetHistoryEntry(getter_AddRefs(viewerEntry));
+ if (viewerEntry == aLoadState->SHEntry()) {
+ // Make sure this viewer ends up in the right place
+ mContentViewer->SetPreviousViewer(nullptr);
+ prevViewer->Destroy();
+ }
+ }
+ }
+ nsCOMPtr<nsISHEntry> oldEntry = mOSHE;
+ bool restoring;
+ rv = RestorePresentation(aLoadState->SHEntry(), &restoring);
+ if (restoring) {
+ Telemetry::Accumulate(Telemetry::BFCACHE_PAGE_RESTORED, true);
+ return rv;
+ }
+ Telemetry::Accumulate(Telemetry::BFCACHE_PAGE_RESTORED, false);
+
+ // We failed to restore the presentation, so clean up.
+ // Both the old and new history entries could potentially be in
+ // an inconsistent state.
+ if (NS_FAILED(rv)) {
+ if (oldEntry) {
+ oldEntry->SyncPresentationState();
+ }
+
+ aLoadState->SHEntry()->SyncPresentationState();
+ }
+ }
+ }
+
+ bool isTopLevelDoc = mBrowsingContext->IsTopContent();
+
+ OriginAttributes attrs = GetOriginAttributes();
+ attrs.SetFirstPartyDomain(isTopLevelDoc, aLoadState->URI());
+
+ PredictorLearn(aLoadState->URI(), nullptr,
+ nsINetworkPredictor::LEARN_LOAD_TOPLEVEL, attrs);
+ PredictorPredict(aLoadState->URI(), nullptr,
+ nsINetworkPredictor::PREDICT_LOAD, attrs, nullptr);
+
+ nsCOMPtr<nsIRequest> req;
+ rv = DoURILoad(aLoadState, aCacheKey, getter_AddRefs(req));
+
+ if (NS_SUCCEEDED(rv)) {
+ if (shouldTakeFocus) {
+ mBrowsingContext->Focus(CallerType::System, IgnoreErrors());
+ }
+ }
+
+ if (NS_FAILED(rv)) {
+ nsCOMPtr<nsIChannel> chan(do_QueryInterface(req));
+ UnblockEmbedderLoadEventForFailure();
+ nsCOMPtr<nsIURI> uri = aLoadState->URI();
+ if (DisplayLoadError(rv, uri, nullptr, chan) &&
+ // FIXME: At this point code was using internal load flags, but checking
+ // non-internal load flags?
+ aLoadState->HasLoadFlags(LOAD_FLAGS_ERROR_LOAD_CHANGES_RV)) {
+ return NS_ERROR_LOAD_SHOWED_ERRORPAGE;
+ }
+
+ // We won't report any error if this is an unknown protocol error. The
+ // reason behind this is that it will allow enumeration of external
+ // protocols if we report an error for each unknown protocol.
+ if (NS_ERROR_UNKNOWN_PROTOCOL == rv) {
+ return NS_OK;
+ }
+ }
+
+ return rv;
+}
+
+/* static */
+bool nsDocShell::CanLoadInParentProcess(nsIURI* aURI) {
+ nsCOMPtr<nsIURI> uri = aURI;
+ // In e10s, in the parent process, we refuse to load anything other than
+ // "safe" resources that we ship or trust enough to give "special" URLs.
+ bool canLoadInParent = false;
+ if (NS_SUCCEEDED(NS_URIChainHasFlags(
+ uri, nsIProtocolHandler::URI_IS_UI_RESOURCE, &canLoadInParent)) &&
+ canLoadInParent) {
+ // We allow UI resources.
+ return true;
+ }
+ // For about: and extension-based URIs, which don't get
+ // URI_IS_UI_RESOURCE, first remove layers of view-source:, if present.
+ while (uri && uri->SchemeIs("view-source")) {
+ nsCOMPtr<nsINestedURI> nested = do_QueryInterface(uri);
+ if (nested) {
+ nested->GetInnerURI(getter_AddRefs(uri));
+ } else {
+ break;
+ }
+ }
+ // Allow about: URIs, and allow moz-extension ones if we're running
+ // extension content in the parent process.
+ if (!uri || uri->SchemeIs("about") ||
+ (!StaticPrefs::extensions_webextensions_remote() &&
+ uri->SchemeIs("moz-extension"))) {
+ return true;
+ }
+#ifdef MOZ_THUNDERBIRD
+ if (uri->SchemeIs("imap") || uri->SchemeIs("mailbox") ||
+ uri->SchemeIs("news") || uri->SchemeIs("nntp") ||
+ uri->SchemeIs("snews")) {
+ return true;
+ }
+#endif
+ nsAutoCString scheme;
+ uri->GetScheme(scheme);
+ // Allow ext+foo URIs (extension-registered custom protocols). See
+ // https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/manifest.json/protocol_handlers
+ if (StringBeginsWith(scheme, "ext+"_ns) &&
+ !StaticPrefs::extensions_webextensions_remote()) {
+ return true;
+ }
+ // Final exception for some legacy automated tests:
+ if (xpc::IsInAutomation() &&
+ StaticPrefs::security_allow_unsafe_parent_loads()) {
+ return true;
+ }
+ return false;
+}
+
+nsIPrincipal* nsDocShell::GetInheritedPrincipal(
+ bool aConsiderCurrentDocument, bool aConsiderPartitionedPrincipal) {
+ RefPtr<Document> document;
+ bool inheritedFromCurrent = false;
+
+ if (aConsiderCurrentDocument && mContentViewer) {
+ document = mContentViewer->GetDocument();
+ inheritedFromCurrent = true;
+ }
+
+ if (!document) {
+ nsCOMPtr<nsIDocShellTreeItem> parentItem;
+ GetInProcessSameTypeParent(getter_AddRefs(parentItem));
+ if (parentItem) {
+ document = parentItem->GetDocument();
+ }
+ }
+
+ if (!document) {
+ if (!aConsiderCurrentDocument) {
+ return nullptr;
+ }
+
+ // Make sure we end up with _something_ as the principal no matter
+ // what.If this fails, we'll just get a null docViewer and bail.
+ EnsureContentViewer();
+ if (!mContentViewer) {
+ return nullptr;
+ }
+ document = mContentViewer->GetDocument();
+ }
+
+ //-- Get the document's principal
+ if (document) {
+ nsIPrincipal* docPrincipal = aConsiderPartitionedPrincipal
+ ? document->PartitionedPrincipal()
+ : document->NodePrincipal();
+
+ // Don't allow loads in typeContent docShells to inherit the system
+ // principal from existing documents.
+ if (inheritedFromCurrent && mItemType == typeContent &&
+ docPrincipal->IsSystemPrincipal()) {
+ return nullptr;
+ }
+
+ return docPrincipal;
+ }
+
+ return nullptr;
+}
+
+/* static */ nsresult nsDocShell::CreateRealChannelForDocument(
+ nsIChannel** aChannel, nsIURI* aURI, nsILoadInfo* aLoadInfo,
+ nsIInterfaceRequestor* aCallbacks, nsLoadFlags aLoadFlags,
+ const nsAString& aSrcdoc, nsIURI* aBaseURI) {
+ nsCOMPtr<nsIChannel> channel;
+ if (aSrcdoc.IsVoid()) {
+ MOZ_TRY(NS_NewChannelInternal(getter_AddRefs(channel), aURI, aLoadInfo,
+ nullptr, // PerformanceStorage
+ nullptr, // loadGroup
+ aCallbacks, aLoadFlags));
+
+ if (aBaseURI) {
+ nsCOMPtr<nsIViewSourceChannel> vsc = do_QueryInterface(channel);
+ if (vsc) {
+ MOZ_ALWAYS_SUCCEEDS(vsc->SetBaseURI(aBaseURI));
+ }
+ }
+ } else if (SchemeIsViewSource(aURI)) {
+ // Instantiate view source handler protocol, if it doesn't exist already.
+ nsCOMPtr<nsIIOService> io(do_GetIOService());
+ MOZ_ASSERT(io);
+ nsCOMPtr<nsIProtocolHandler> handler;
+ nsresult rv =
+ io->GetProtocolHandler("view-source", getter_AddRefs(handler));
+ if (NS_FAILED(rv)) {
+ return rv;
+ }
+
+ nsViewSourceHandler* vsh = nsViewSourceHandler::GetInstance();
+ if (!vsh) {
+ return NS_ERROR_FAILURE;
+ }
+
+ MOZ_TRY(vsh->NewSrcdocChannel(aURI, aBaseURI, aSrcdoc, aLoadInfo,
+ getter_AddRefs(channel)));
+ } else {
+ MOZ_TRY(NS_NewInputStreamChannelInternal(getter_AddRefs(channel), aURI,
+ aSrcdoc, "text/html"_ns, aLoadInfo,
+ true));
+ nsCOMPtr<nsIInputStreamChannel> isc = do_QueryInterface(channel);
+ MOZ_ASSERT(isc);
+ isc->SetBaseURI(aBaseURI);
+ }
+
+ if (aLoadFlags != nsIRequest::LOAD_NORMAL) {
+ nsresult rv = channel->SetLoadFlags(aLoadFlags);
+ NS_ENSURE_SUCCESS(rv, rv);
+ }
+
+ channel.forget(aChannel);
+ return NS_OK;
+}
+
+/* static */ bool nsDocShell::CreateAndConfigureRealChannelForLoadState(
+ BrowsingContext* aBrowsingContext, nsDocShellLoadState* aLoadState,
+ LoadInfo* aLoadInfo, nsIInterfaceRequestor* aCallbacks,
+ nsDocShell* aDocShell, const OriginAttributes& aOriginAttributes,
+ nsLoadFlags aLoadFlags, uint32_t aCacheKey, nsresult& aRv,
+ nsIChannel** aChannel) {
+ MOZ_ASSERT(aLoadInfo);
+
+ nsString srcdoc = VoidString();
+ bool isSrcdoc =
+ aLoadState->HasInternalLoadFlags(INTERNAL_LOAD_FLAGS_IS_SRCDOC);
+ if (isSrcdoc) {
+ srcdoc = aLoadState->SrcdocData();
+ }
+
+ aLoadInfo->SetTriggeringRemoteType(
+ aLoadState->GetEffectiveTriggeringRemoteType());
+
+ if (aLoadState->PrincipalToInherit()) {
+ aLoadInfo->SetPrincipalToInherit(aLoadState->PrincipalToInherit());
+ }
+ aLoadInfo->SetLoadTriggeredFromExternal(
+ aLoadState->HasLoadFlags(LOAD_FLAGS_FROM_EXTERNAL));
+ aLoadInfo->SetForceAllowDataURI(aLoadState->HasInternalLoadFlags(
+ INTERNAL_LOAD_FLAGS_FORCE_ALLOW_DATA_URI));
+ aLoadInfo->SetOriginalFrameSrcLoad(
+ aLoadState->HasInternalLoadFlags(INTERNAL_LOAD_FLAGS_ORIGINAL_FRAME_SRC));
+
+ bool inheritAttrs = false;
+ if (aLoadState->PrincipalToInherit()) {
+ inheritAttrs = nsContentUtils::ChannelShouldInheritPrincipal(
+ aLoadState->PrincipalToInherit(), aLoadState->URI(),
+ true, // aInheritForAboutBlank
+ isSrcdoc);
+ }
+
+ // Strip the target query parameters before creating the channel.
+ aLoadState->MaybeStripTrackerQueryStrings(aBrowsingContext);
+
+ OriginAttributes attrs;
+
+ // Inherit origin attributes from PrincipalToInherit if inheritAttrs is
+ // true. Otherwise we just use the origin attributes from docshell.
+ if (inheritAttrs) {
+ MOZ_ASSERT(aLoadState->PrincipalToInherit(),
+ "We should have PrincipalToInherit here.");
+ attrs = aLoadState->PrincipalToInherit()->OriginAttributesRef();
+ // If firstPartyIsolation is not enabled, then PrincipalToInherit should
+ // have the same origin attributes with docshell.
+ MOZ_ASSERT_IF(!OriginAttributes::IsFirstPartyEnabled(),
+ attrs == aOriginAttributes);
+ } else {
+ attrs = aOriginAttributes;
+ attrs.SetFirstPartyDomain(IsTopLevelDoc(aBrowsingContext, aLoadInfo),
+ aLoadState->URI());
+ }
+
+ aRv = aLoadInfo->SetOriginAttributes(attrs);
+ if (NS_WARN_IF(NS_FAILED(aRv))) {
+ return false;
+ }
+
+ if (aLoadState->GetIsFromProcessingFrameAttributes()) {
+ aLoadInfo->SetIsFromProcessingFrameAttributes();
+ }
+
+ // Propagate the IsFormSubmission flag to the loadInfo.
+ if (aLoadState->IsFormSubmission()) {
+ aLoadInfo->SetIsFormSubmission(true);
+ }
+
+ aLoadInfo->SetUnstrippedURI(aLoadState->GetUnstrippedURI());
+
+ nsCOMPtr<nsIChannel> channel;
+ aRv = CreateRealChannelForDocument(getter_AddRefs(channel), aLoadState->URI(),
+ aLoadInfo, aCallbacks, aLoadFlags, srcdoc,
+ aLoadState->BaseURI());
+ NS_ENSURE_SUCCESS(aRv, false);
+
+ if (!channel) {
+ return false;
+ }
+
+ // If the HTTPS-Only mode is enabled, every insecure request gets upgraded to
+ // HTTPS by default. This behavior can be disabled through the loadinfo flag
+ // HTTPS_ONLY_EXEMPT.
+ nsHTTPSOnlyUtils::TestSitePermissionAndPotentiallyAddExemption(channel);
+
+ // hack
+ nsCOMPtr<nsIHttpChannel> httpChannel(do_QueryInterface(channel));
+ nsCOMPtr<nsIHttpChannelInternal> httpChannelInternal(
+ do_QueryInterface(channel));
+ nsCOMPtr<nsIURI> referrer;
+ nsIReferrerInfo* referrerInfo = aLoadState->GetReferrerInfo();
+ if (referrerInfo) {
+ referrerInfo->GetOriginalReferrer(getter_AddRefs(referrer));
+ }
+ if (httpChannelInternal) {
+ if (aLoadState->HasInternalLoadFlags(
+ INTERNAL_LOAD_FLAGS_FORCE_ALLOW_COOKIES)) {
+ aRv = httpChannelInternal->SetThirdPartyFlags(
+ nsIHttpChannelInternal::THIRD_PARTY_FORCE_ALLOW);
+ MOZ_ASSERT(NS_SUCCEEDED(aRv));
+ }
+ if (aLoadState->FirstParty()) {
+ aRv = httpChannelInternal->SetDocumentURI(aLoadState->URI());
+ MOZ_ASSERT(NS_SUCCEEDED(aRv));
+ } else {
+ aRv = httpChannelInternal->SetDocumentURI(referrer);
+ MOZ_ASSERT(NS_SUCCEEDED(aRv));
+ }
+ aRv = httpChannelInternal->SetRedirectMode(
+ nsIHttpChannelInternal::REDIRECT_MODE_MANUAL);
+ MOZ_ASSERT(NS_SUCCEEDED(aRv));
+ }
+
+ if (httpChannel) {
+ if (aLoadState->HeadersStream()) {
+ aRv = AddHeadersToChannel(aLoadState->HeadersStream(), httpChannel);
+ }
+ // Set the referrer explicitly
+ // Referrer is currenly only set for link clicks here.
+ if (referrerInfo) {
+ aRv = httpChannel->SetReferrerInfo(referrerInfo);
+ MOZ_ASSERT(NS_SUCCEEDED(aRv));
+ }
+
+ // Mark the http channel as UrgentStart for top level document loading in
+ // active tab.
+ if (IsUrgentStart(aBrowsingContext, aLoadInfo, aLoadState->LoadType())) {
+ nsCOMPtr<nsIClassOfService> cos(do_QueryInterface(channel));
+ if (cos) {
+ cos->AddClassFlags(nsIClassOfService::UrgentStart);
+ }
+ }
+ }
+
+ channel->SetOriginalURI(aLoadState->OriginalURI() ? aLoadState->OriginalURI()
+ : aLoadState->URI());
+
+ const nsACString& typeHint = aLoadState->TypeHint();
+ if (!typeHint.IsVoid()) {
+ channel->SetContentType(typeHint);
+ }
+
+ const nsAString& fileName = aLoadState->FileName();
+ if (!fileName.IsVoid()) {
+ aRv = channel->SetContentDisposition(nsIChannel::DISPOSITION_ATTACHMENT);
+ NS_ENSURE_SUCCESS(aRv, false);
+ if (!fileName.IsEmpty()) {
+ aRv = channel->SetContentDispositionFilename(fileName);
+ NS_ENSURE_SUCCESS(aRv, false);
+ }
+ }
+
+ if (nsCOMPtr<nsIWritablePropertyBag2> props = do_QueryInterface(channel)) {
+ nsCOMPtr<nsIURI> referrer;
+ nsIReferrerInfo* referrerInfo = aLoadState->GetReferrerInfo();
+ if (referrerInfo) {
+ referrerInfo->GetOriginalReferrer(getter_AddRefs(referrer));
+ }
+ // save true referrer for those who need it (e.g. xpinstall whitelisting)
+ // Currently only http and ftp channels support this.
+ props->SetPropertyAsInterface(u"docshell.internalReferrer"_ns, referrer);
+
+ if (aLoadState->HasInternalLoadFlags(INTERNAL_LOAD_FLAGS_FIRST_LOAD)) {
+ props->SetPropertyAsBool(u"docshell.newWindowTarget"_ns, true);
+ }
+ }
+
+ nsCOMPtr<nsICacheInfoChannel> cacheChannel(do_QueryInterface(channel));
+ auto loadType = aLoadState->LoadType();
+
+ if (loadType == LOAD_RELOAD_NORMAL &&
+ StaticPrefs::
+ browser_soft_reload_only_force_validate_top_level_document()) {
+ nsCOMPtr<nsICacheInfoChannel> cachingChannel = do_QueryInterface(channel);
+ if (cachingChannel) {
+ cachingChannel->SetForceValidateCacheContent(true);
+ }
+ }
+
+ // figure out if we need to set the post data stream on the channel...
+ if (aLoadState->PostDataStream()) {
+ if (nsCOMPtr<nsIFormPOSTActionChannel> postChannel =
+ do_QueryInterface(channel)) {
+ // XXX it's a bit of a hack to rewind the postdata stream here but
+ // it has to be done in case the post data is being reused multiple
+ // times.
+ nsCOMPtr<nsISeekableStream> postDataSeekable =
+ do_QueryInterface(aLoadState->PostDataStream());
+ if (postDataSeekable) {
+ aRv = postDataSeekable->Seek(nsISeekableStream::NS_SEEK_SET, 0);
+ NS_ENSURE_SUCCESS(aRv, false);
+ }
+
+ // we really need to have a content type associated with this stream!!
+ postChannel->SetUploadStream(aLoadState->PostDataStream(), ""_ns, -1);
+
+ // Ownership of the stream has transferred to the channel, clear our
+ // reference.
+ aLoadState->SetPostDataStream(nullptr);
+ }
+
+ /* If there is a valid postdata *and* it is a History Load,
+ * set up the cache key on the channel, to retrieve the
+ * data *only* from the cache. If it is a normal reload, the
+ * cache is free to go to the server for updated postdata.
+ */
+ if (cacheChannel && aCacheKey != 0) {
+ if (loadType == LOAD_HISTORY || loadType == LOAD_RELOAD_CHARSET_CHANGE) {
+ cacheChannel->SetCacheKey(aCacheKey);
+ uint32_t loadFlags;
+ if (NS_SUCCEEDED(channel->GetLoadFlags(&loadFlags))) {
+ channel->SetLoadFlags(loadFlags |
+ nsICachingChannel::LOAD_ONLY_FROM_CACHE);
+ }
+ } else if (loadType == LOAD_RELOAD_NORMAL) {
+ cacheChannel->SetCacheKey(aCacheKey);
+ }
+ }
+ } else {
+ /* If there is no postdata, set the cache key on the channel, and
+ * do not set the LOAD_ONLY_FROM_CACHE flag, so that the channel
+ * will be free to get it from net if it is not found in cache.
+ * New cache may use it creatively on CGI pages with GET
+ * method and even on those that say "no-cache"
+ */
+ if (loadType == LOAD_HISTORY || loadType == LOAD_RELOAD_NORMAL ||
+ loadType == LOAD_RELOAD_CHARSET_CHANGE ||
+ loadType == LOAD_RELOAD_CHARSET_CHANGE_BYPASS_CACHE ||
+ loadType == LOAD_RELOAD_CHARSET_CHANGE_BYPASS_PROXY_AND_CACHE) {
+ if (cacheChannel && aCacheKey != 0) {
+ cacheChannel->SetCacheKey(aCacheKey);
+ }
+ }
+ }
+
+ if (nsCOMPtr<nsIScriptChannel> scriptChannel = do_QueryInterface(channel)) {
+ // Allow execution against our context if the principals match
+ scriptChannel->SetExecutionPolicy(nsIScriptChannel::EXECUTE_NORMAL);
+ }
+
+ if (nsCOMPtr<nsITimedChannel> timedChannel = do_QueryInterface(channel)) {
+ timedChannel->SetTimingEnabled(true);
+
+ nsString initiatorType;
+ switch (aLoadInfo->InternalContentPolicyType()) {
+ case nsIContentPolicy::TYPE_INTERNAL_EMBED:
+ initiatorType = u"embed"_ns;
+ break;
+ case nsIContentPolicy::TYPE_INTERNAL_OBJECT:
+ initiatorType = u"object"_ns;
+ break;
+ default: {
+ const auto& embedderElementType =
+ aBrowsingContext->GetEmbedderElementType();
+ if (embedderElementType) {
+ initiatorType = *embedderElementType;
+ }
+ break;
+ }
+ }
+
+ if (!initiatorType.IsEmpty()) {
+ timedChannel->SetInitiatorType(initiatorType);
+ }
+ }
+
+ nsCOMPtr<nsIURI> rpURI;
+ aLoadInfo->GetResultPrincipalURI(getter_AddRefs(rpURI));
+ Maybe<nsCOMPtr<nsIURI>> originalResultPrincipalURI;
+ aLoadState->GetMaybeResultPrincipalURI(originalResultPrincipalURI);
+ if (originalResultPrincipalURI &&
+ (!aLoadState->KeepResultPrincipalURIIfSet() || !rpURI)) {
+ // Unconditionally override, we want the replay to be equal to what has
+ // been captured.
+ aLoadInfo->SetResultPrincipalURI(originalResultPrincipalURI.ref());
+ }
+
+ if (aLoadState->OriginalURI() && aLoadState->LoadReplace()) {
+ // The LOAD_REPLACE flag and its handling here will be removed as part
+ // of bug 1319110. For now preserve its restoration here to not break
+ // any code expecting it being set specially on redirected channels.
+ // If the flag has originally been set to change result of
+ // NS_GetFinalChannelURI it won't have any effect and also won't cause
+ // any harm.
+ uint32_t loadFlags;
+ aRv = channel->GetLoadFlags(&loadFlags);
+ NS_ENSURE_SUCCESS(aRv, false);
+ channel->SetLoadFlags(loadFlags | nsIChannel::LOAD_REPLACE);
+ }
+
+ nsCOMPtr<nsIContentSecurityPolicy> csp = aLoadState->Csp();
+ if (csp) {
+ // Navigational requests that are same origin need to be upgraded in case
+ // upgrade-insecure-requests is present. Please note that for document
+ // navigations that bit is re-computed in case we encounter a server
+ // side redirect so the navigation is not same-origin anymore.
+ bool upgradeInsecureRequests = false;
+ csp->GetUpgradeInsecureRequests(&upgradeInsecureRequests);
+ if (upgradeInsecureRequests) {
+ // only upgrade if the navigation is same origin
+ nsCOMPtr<nsIPrincipal> resultPrincipal;
+ aRv = nsContentUtils::GetSecurityManager()->GetChannelResultPrincipal(
+ channel, getter_AddRefs(resultPrincipal));
+ NS_ENSURE_SUCCESS(aRv, false);
+ if (nsContentSecurityUtils::IsConsideredSameOriginForUIR(
+ aLoadState->TriggeringPrincipal(), resultPrincipal)) {
+ aLoadInfo->SetUpgradeInsecureRequests(true);
+ }
+ }
+
+ // For document loads we store the CSP that potentially needs to
+ // be inherited by the new document, e.g. in case we are loading
+ // an opaque origin like a data: URI. The actual inheritance
+ // check happens within Document::InitCSP().
+ // Please create an actual copy of the CSP (do not share the same
+ // reference) otherwise a Meta CSP of an opaque origin will
+ // incorrectly be propagated to the embedding document.
+ RefPtr<nsCSPContext> cspToInherit = new nsCSPContext();
+ cspToInherit->InitFromOther(static_cast<nsCSPContext*>(csp.get()));
+ aLoadInfo->SetCSPToInherit(cspToInherit);
+ }
+
+ channel.forget(aChannel);
+ return true;
+}
+
+bool nsDocShell::IsAboutBlankLoadOntoInitialAboutBlank(
+ nsIURI* aURI, bool aInheritPrincipal, nsIPrincipal* aPrincipalToInherit) {
+ return NS_IsAboutBlank(aURI) && aInheritPrincipal &&
+ (aPrincipalToInherit == GetInheritedPrincipal(false)) &&
+ (!mContentViewer || !mContentViewer->GetDocument() ||
+ mContentViewer->GetDocument()->IsInitialDocument());
+}
+
+nsresult nsDocShell::DoURILoad(nsDocShellLoadState* aLoadState,
+ Maybe<uint32_t> aCacheKey,
+ nsIRequest** aRequest) {
+ // Double-check that we're still around to load this URI.
+ if (mIsBeingDestroyed) {
+ // Return NS_OK despite not doing anything to avoid throwing exceptions
+ // from nsLocation::SetHref if the unload handler of the existing page
+ // tears us down.
+ return NS_OK;
+ }
+
+ nsCOMPtr<nsIURILoader> uriLoader = components::URILoader::Service();
+ if (NS_WARN_IF(!uriLoader)) {
+ return NS_ERROR_UNEXPECTED;
+ }
+
+ // Persist and sync layout history state before we load a new uri, as this
+ // might be our last chance to do so, in the content process.
+ PersistLayoutHistoryState();
+ SynchronizeLayoutHistoryState();
+
+ nsresult rv;
+ nsContentPolicyType contentPolicyType = DetermineContentType();
+
+ if (IsSubframe()) {
+ MOZ_ASSERT(contentPolicyType == nsIContentPolicy::TYPE_INTERNAL_IFRAME ||
+ contentPolicyType == nsIContentPolicy::TYPE_INTERNAL_FRAME,
+ "DoURILoad thinks this is a frame and InternalLoad does not");
+
+ if (StaticPrefs::dom_block_external_protocol_in_iframes()) {
+ // Only allow URLs able to return data in iframes.
+ if (nsContentUtils::IsExternalProtocol(aLoadState->URI())) {
+ // The context to check user-interaction with for the purposes of
+ // popup-blocking.
+ //
+ // We generally want to check the context that initiated the navigation.
+ WindowContext* sourceWindowContext = [&] {
+ const MaybeDiscardedBrowsingContext& sourceBC =
+ aLoadState->SourceBrowsingContext();
+ if (!sourceBC.IsNullOrDiscarded()) {
+ if (WindowContext* wc = sourceBC.get()->GetCurrentWindowContext()) {
+ return wc;
+ }
+ }
+ return mBrowsingContext->GetParentWindowContext();
+ }();
+
+ MOZ_ASSERT(sourceWindowContext);
+ // FIXME: We can't check user-interaction against an OOP window. This is
+ // the next best thing we can really do. The load state keeps whether
+ // the navigation had a user interaction in process
+ // (aLoadState->HasValidUserGestureActivation()), but we can't really
+ // consume it, which we want to prevent popup-spamming from the same
+ // click event.
+ WindowContext* context =
+ sourceWindowContext->IsInProcess()
+ ? sourceWindowContext
+ : mBrowsingContext->GetCurrentWindowContext();
+ const bool popupBlocked = [&] {
+ const bool active = mBrowsingContext->IsActive();
+
+ // For same-origin-with-top windows, we grant a single free popup
+ // without user activation, see bug 1680721.
+ //
+ // We consume the flag now even if there's no user activation.
+ const bool hasFreePass = [&] {
+ if (!active ||
+ !(context->IsInProcess() && context->SameOriginWithTop())) {
+ return false;
+ }
+ nsGlobalWindowInner* win =
+ context->TopWindowContext()->GetInnerWindow();
+ return win && win->TryOpenExternalProtocolIframe();
+ }();
+
+ if (context->IsInProcess() &&
+ context->ConsumeTransientUserGestureActivation()) {
+ // If the user has interacted with the page, consume it.
+ return false;
+ }
+
+ // TODO(emilio): Can we remove this check? It seems like what prompted
+ // this code (bug 1514547) should be covered by transient user
+ // activation, see bug 1514547.
+ if (active &&
+ PopupBlocker::ConsumeTimerTokenForExternalProtocolIframe()) {
+ return false;
+ }
+
+ if (sourceWindowContext->CanShowPopup()) {
+ return false;
+ }
+
+ if (hasFreePass) {
+ return false;
+ }
+
+ return true;
+ }();
+
+ // No error must be returned when iframes are blocked.
+ if (popupBlocked) {
+ nsAutoString message;
+ nsresult rv = nsContentUtils::GetLocalizedString(
+ nsContentUtils::eDOM_PROPERTIES,
+ "ExternalProtocolFrameBlockedNoUserActivation", message);
+ if (NS_SUCCEEDED(rv)) {
+ nsContentUtils::ReportToConsoleByWindowID(
+ message, nsIScriptError::warningFlag, "DOM"_ns,
+ context->InnerWindowId());
+ }
+ return NS_OK;
+ }
+ }
+ }
+
+ // Only allow view-source scheme in top-level docshells. view-source is
+ // the only scheme to which this applies at the moment due to potential
+ // timing attacks to read data from cross-origin iframes. If this widens
+ // we should add a protocol flag for whether the scheme is allowed in
+ // frames and use something like nsNetUtil::NS_URIChainHasFlags.
+ nsCOMPtr<nsIURI> tempURI = aLoadState->URI();
+ nsCOMPtr<nsINestedURI> nestedURI = do_QueryInterface(tempURI);
+ while (nestedURI) {
+ // view-source should always be an nsINestedURI, loop and check the
+ // scheme on this and all inner URIs that are also nested URIs.
+ if (SchemeIsViewSource(tempURI)) {
+ return NS_ERROR_UNKNOWN_PROTOCOL;
+ }
+ nestedURI->GetInnerURI(getter_AddRefs(tempURI));
+ nestedURI = do_QueryInterface(tempURI);
+ }
+ } else {
+ MOZ_ASSERT(contentPolicyType == nsIContentPolicy::TYPE_DOCUMENT,
+ "DoURILoad thinks this is a document and InternalLoad does not");
+ }
+
+ // We want to inherit aLoadState->PrincipalToInherit() when:
+ // 1. ChannelShouldInheritPrincipal returns true.
+ // 2. aLoadState->URI() is not data: URI, or data: URI is not
+ // configured as unique opaque origin.
+ bool inheritPrincipal = false;
+
+ if (aLoadState->PrincipalToInherit()) {
+ bool isSrcdoc =
+ aLoadState->HasInternalLoadFlags(INTERNAL_LOAD_FLAGS_IS_SRCDOC);
+ bool inheritAttrs = nsContentUtils::ChannelShouldInheritPrincipal(
+ aLoadState->PrincipalToInherit(), aLoadState->URI(),
+ true, // aInheritForAboutBlank
+ isSrcdoc);
+
+ inheritPrincipal = inheritAttrs && !SchemeIsData(aLoadState->URI());
+ }
+
+ // See https://bugzilla.mozilla.org/show_bug.cgi?id=1736570
+ const bool isAboutBlankLoadOntoInitialAboutBlank =
+ IsAboutBlankLoadOntoInitialAboutBlank(aLoadState->URI(), inheritPrincipal,
+ aLoadState->PrincipalToInherit());
+
+ // FIXME We still have a ton of codepaths that don't pass through
+ // DocumentLoadListener, so probably need to create session history info
+ // in more places.
+ if (aLoadState->GetLoadingSessionHistoryInfo()) {
+ SetLoadingSessionHistoryInfo(*aLoadState->GetLoadingSessionHistoryInfo());
+ } else if (isAboutBlankLoadOntoInitialAboutBlank &&
+ mozilla::SessionHistoryInParent()) {
+ // Materialize LoadingSessionHistoryInfo here, because DocumentChannel
+ // loads have it, and later history behavior depends on it existing.
+ UniquePtr<SessionHistoryInfo> entry = MakeUnique<SessionHistoryInfo>(
+ aLoadState->URI(), aLoadState->TriggeringPrincipal(),
+ aLoadState->PrincipalToInherit(),
+ aLoadState->PartitionedPrincipalToInherit(), aLoadState->Csp(),
+ mContentTypeHint);
+ mozilla::dom::LoadingSessionHistoryInfo info(*entry);
+ SetLoadingSessionHistoryInfo(info, true);
+ }
+
+ // open a channel for the url
+
+ // If we have a pending channel, use the channel we've already created here.
+ // We don't need to set up load flags for our channel, as it has already been
+ // created.
+
+ if (nsCOMPtr<nsIChannel> channel =
+ aLoadState->GetPendingRedirectedChannel()) {
+ // If we have a request outparameter, shove our channel into it.
+ if (aRequest) {
+ nsCOMPtr<nsIRequest> outRequest = channel;
+ outRequest.forget(aRequest);
+ }
+
+ return OpenRedirectedChannel(aLoadState);
+ }
+
+ // There are two cases we care about:
+ // * Top-level load: In this case, loadingNode is null, but loadingWindow
+ // is our mScriptGlobal. We pass null for loadingPrincipal in this case.
+ // * Subframe load: loadingWindow is null, but loadingNode is the frame
+ // element for the load. loadingPrincipal is the NodePrincipal of the
+ // frame element.
+ nsCOMPtr<nsINode> loadingNode;
+ nsCOMPtr<nsPIDOMWindowOuter> loadingWindow;
+ nsCOMPtr<nsIPrincipal> loadingPrincipal;
+ nsCOMPtr<nsISupports> topLevelLoadingContext;
+
+ if (contentPolicyType == nsIContentPolicy::TYPE_DOCUMENT) {
+ loadingNode = nullptr;
+ loadingPrincipal = nullptr;
+ loadingWindow = mScriptGlobal;
+ if (XRE_IsContentProcess()) {
+ // In e10s the child process doesn't have access to the element that
+ // contains the browsing context (because that element is in the chrome
+ // process).
+ nsCOMPtr<nsIBrowserChild> browserChild = GetBrowserChild();
+ topLevelLoadingContext = ToSupports(browserChild);
+ } else {
+ // This is for loading non-e10s tabs and toplevel windows of various
+ // sorts.
+ // For the toplevel window cases, requestingElement will be null.
+ nsCOMPtr<Element> requestingElement =
+ loadingWindow->GetFrameElementInternal();
+ topLevelLoadingContext = requestingElement;
+ }
+ } else {
+ loadingWindow = nullptr;
+ loadingNode = mScriptGlobal->GetFrameElementInternal();
+ if (loadingNode) {
+ // If we have a loading node, then use that as our loadingPrincipal.
+ loadingPrincipal = loadingNode->NodePrincipal();
+#ifdef DEBUG
+ // Get the docshell type for requestingElement.
+ RefPtr<Document> requestingDoc = loadingNode->OwnerDoc();
+ nsCOMPtr<nsIDocShell> elementDocShell = requestingDoc->GetDocShell();
+ // requestingElement docshell type = current docshell type.
+ MOZ_ASSERT(
+ mItemType == elementDocShell->ItemType(),
+ "subframes should have the same docshell type as their parent");
+#endif
+ } else {
+ if (mIsBeingDestroyed) {
+ // If this isn't a top-level load and mScriptGlobal's frame element is
+ // null, then the element got removed from the DOM while we were trying
+ // to load this resource. This docshell is scheduled for destruction
+ // already, so bail out here.
+ return NS_OK;
+ }
+ // If we are not being destroyed and we do not have access to the loading
+ // node, then we are a remote subframe. Set the loading principal
+ // to be a null principal and then set it correctly in the parent.
+ loadingPrincipal = NullPrincipal::Create(GetOriginAttributes(), nullptr);
+ }
+ }
+
+ if (!aLoadState->TriggeringPrincipal()) {
+ MOZ_ASSERT(false, "DoURILoad needs a valid triggeringPrincipal");
+ return NS_ERROR_FAILURE;
+ }
+
+ uint32_t sandboxFlags = mBrowsingContext->GetSandboxFlags();
+ nsSecurityFlags securityFlags =
+ nsILoadInfo::SEC_ALLOW_CROSS_ORIGIN_SEC_CONTEXT_IS_NULL;
+
+ if (mLoadType == LOAD_ERROR_PAGE) {
+ securityFlags |= nsILoadInfo::SEC_LOAD_ERROR_PAGE;
+ }
+
+ if (inheritPrincipal) {
+ securityFlags |= nsILoadInfo::SEC_FORCE_INHERIT_PRINCIPAL;
+ }
+
+ // Must never have a parent for TYPE_DOCUMENT loads
+ MOZ_ASSERT_IF(contentPolicyType == nsIContentPolicy::TYPE_DOCUMENT,
+ !mBrowsingContext->GetParent());
+ // Subdocuments must have a parent
+ MOZ_ASSERT_IF(contentPolicyType == nsIContentPolicy::TYPE_SUBDOCUMENT,
+ mBrowsingContext->GetParent());
+ mBrowsingContext->SetTriggeringAndInheritPrincipals(
+ aLoadState->TriggeringPrincipal(), aLoadState->PrincipalToInherit(),
+ aLoadState->GetLoadIdentifier());
+ RefPtr<LoadInfo> loadInfo =
+ (contentPolicyType == nsIContentPolicy::TYPE_DOCUMENT)
+ ? new LoadInfo(loadingWindow, aLoadState->URI(),
+ aLoadState->TriggeringPrincipal(),
+ topLevelLoadingContext, securityFlags, sandboxFlags)
+ : new LoadInfo(loadingPrincipal, aLoadState->TriggeringPrincipal(),
+ loadingNode, securityFlags, contentPolicyType,
+ Maybe<mozilla::dom::ClientInfo>(),
+ Maybe<mozilla::dom::ServiceWorkerDescriptor>(),
+ sandboxFlags);
+ RefPtr<WindowContext> context = mBrowsingContext->GetCurrentWindowContext();
+
+ if (isAboutBlankLoadOntoInitialAboutBlank) {
+ // Match the DocumentChannel case where the default for third-partiness
+ // differs from the default in LoadInfo construction here.
+ // toolkit/components/antitracking/test/browser/browser_aboutblank.js
+ // fails without this.
+ BrowsingContext* top = mBrowsingContext->Top();
+ if (top == mBrowsingContext) {
+ // If we're at the top, this must be a window.open()ed
+ // window, and we can't be third-party relative to ourselves.
+ loadInfo->SetIsThirdPartyContextToTopWindow(false);
+ } else {
+ if (Document* topDoc = top->GetDocument()) {
+ bool thirdParty = false;
+ mozilla::Unused << topDoc->GetPrincipal()->IsThirdPartyPrincipal(
+ aLoadState->PrincipalToInherit(), &thirdParty);
+ loadInfo->SetIsThirdPartyContextToTopWindow(thirdParty);
+ } else {
+ // If top is in a different process, we have to be third-party relative
+ // to it.
+ loadInfo->SetIsThirdPartyContextToTopWindow(true);
+ }
+ }
+ }
+
+ if (mLoadType != LOAD_ERROR_PAGE && context && context->IsInProcess() &&
+ context->HasValidTransientUserGestureActivation()) {
+ aLoadState->SetHasValidUserGestureActivation(true);
+ }
+
+ // in case this docshell load was triggered by a valid transient user gesture,
+ // or also the load originates from external, then we pass that information on
+ // to the loadinfo, which allows e.g. setting Sec-Fetch-User request headers.
+ if (aLoadState->HasValidUserGestureActivation() ||
+ aLoadState->HasLoadFlags(LOAD_FLAGS_FROM_EXTERNAL)) {
+ loadInfo->SetHasValidUserGestureActivation(true);
+ }
+ loadInfo->SetTriggeringSandboxFlags(aLoadState->TriggeringSandboxFlags());
+ loadInfo->SetIsMetaRefresh(aLoadState->IsMetaRefresh());
+
+ uint32_t cacheKey = 0;
+ if (aCacheKey) {
+ cacheKey = *aCacheKey;
+ } else if (mozilla::SessionHistoryInParent()) {
+ if (mLoadingEntry) {
+ cacheKey = mLoadingEntry->mInfo.GetCacheKey();
+ } else if (mActiveEntry) { // for reload cases
+ cacheKey = mActiveEntry->GetCacheKey();
+ }
+ } else {
+ if (mLSHE) {
+ cacheKey = mLSHE->GetCacheKey();
+ } else if (mOSHE) { // for reload cases
+ cacheKey = mOSHE->GetCacheKey();
+ }
+ }
+
+ bool uriModified;
+ if (mLSHE || mLoadingEntry) {
+ if (mLoadingEntry) {
+ uriModified = mLoadingEntry->mInfo.GetURIWasModified();
+ } else {
+ uriModified = mLSHE->GetURIWasModified();
+ }
+ } else {
+ uriModified = false;
+ }
+
+ bool isXFOError = false;
+ if (mFailedChannel) {
+ nsresult status;
+ mFailedChannel->GetStatus(&status);
+ isXFOError = status == NS_ERROR_XFO_VIOLATION;
+ }
+
+ nsLoadFlags loadFlags = aLoadState->CalculateChannelLoadFlags(
+ mBrowsingContext, Some(uriModified), Some(isXFOError));
+
+ nsCOMPtr<nsIChannel> channel;
+ if (DocumentChannel::CanUseDocumentChannel(aLoadState->URI()) &&
+ !isAboutBlankLoadOntoInitialAboutBlank) {
+ channel = DocumentChannel::CreateForDocument(aLoadState, loadInfo,
+ loadFlags, this, cacheKey,
+ uriModified, isXFOError);
+ MOZ_ASSERT(channel);
+
+ // Disable keyword fixup when using DocumentChannel, since
+ // DocumentLoadListener will handle this for us (in the parent process).
+ mAllowKeywordFixup = false;
+ } else if (!CreateAndConfigureRealChannelForLoadState(
+ mBrowsingContext, aLoadState, loadInfo, this, this,
+ GetOriginAttributes(), loadFlags, cacheKey, rv,
+ getter_AddRefs(channel))) {
+ return rv;
+ }
+
+ // Make sure to give the caller a channel if we managed to create one
+ // This is important for correct error page/session history interaction
+ if (aRequest) {
+ NS_ADDREF(*aRequest = channel);
+ }
+
+ nsCOMPtr<nsIContentSecurityPolicy> csp = aLoadState->Csp();
+ if (csp) {
+ // Check CSP navigate-to
+ bool allowsNavigateTo = false;
+ rv = csp->GetAllowsNavigateTo(aLoadState->URI(),
+ aLoadState->IsFormSubmission(),
+ false, /* aWasRedirected */
+ false, /* aEnforceWhitelist */
+ &allowsNavigateTo);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ if (!allowsNavigateTo) {
+ return NS_ERROR_CSP_NAVIGATE_TO_VIOLATION;
+ }
+ }
+
+ const nsACString& typeHint = aLoadState->TypeHint();
+ if (!typeHint.IsVoid()) {
+ mContentTypeHint = typeHint;
+ } else {
+ mContentTypeHint.Truncate();
+ }
+
+ // Load attributes depend on load type...
+ if (mLoadType == LOAD_RELOAD_CHARSET_CHANGE) {
+ // Use SetAllowStaleCacheContent (not LOAD_FROM_CACHE flag) since we
+ // only want to force cache load for this channel, not the whole
+ // loadGroup.
+ nsCOMPtr<nsICacheInfoChannel> cachingChannel = do_QueryInterface(channel);
+ if (cachingChannel) {
+ cachingChannel->SetAllowStaleCacheContent(true);
+ }
+ }
+
+ uint32_t openFlags =
+ nsDocShell::ComputeURILoaderFlags(mBrowsingContext, mLoadType);
+ return OpenInitializedChannel(channel, uriLoader, openFlags);
+}
+
+static nsresult AppendSegmentToString(nsIInputStream* aIn, void* aClosure,
+ const char* aFromRawSegment,
+ uint32_t aToOffset, uint32_t aCount,
+ uint32_t* aWriteCount) {
+ // aFromSegment now contains aCount bytes of data.
+
+ nsAutoCString* buf = static_cast<nsAutoCString*>(aClosure);
+ buf->Append(aFromRawSegment, aCount);
+
+ // Indicate that we have consumed all of aFromSegment
+ *aWriteCount = aCount;
+ return NS_OK;
+}
+
+/* static */ nsresult nsDocShell::AddHeadersToChannel(
+ nsIInputStream* aHeadersData, nsIChannel* aGenericChannel) {
+ nsCOMPtr<nsIHttpChannel> httpChannel = do_QueryInterface(aGenericChannel);
+ NS_ENSURE_STATE(httpChannel);
+
+ uint32_t numRead;
+ nsAutoCString headersString;
+ nsresult rv = aHeadersData->ReadSegments(
+ AppendSegmentToString, &headersString, UINT32_MAX, &numRead);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ // used during the manipulation of the String from the InputStream
+ nsAutoCString headerName;
+ nsAutoCString headerValue;
+ int32_t crlf;
+ int32_t colon;
+
+ //
+ // Iterate over the headersString: for each "\r\n" delimited chunk,
+ // add the value as a header to the nsIHttpChannel
+ //
+
+ static const char kWhitespace[] = "\b\t\r\n ";
+ while (true) {
+ crlf = headersString.Find("\r\n");
+ if (crlf == kNotFound) {
+ return NS_OK;
+ }
+
+ const nsACString& oneHeader = StringHead(headersString, crlf);
+
+ colon = oneHeader.FindChar(':');
+ if (colon == kNotFound) {
+ return NS_ERROR_UNEXPECTED;
+ }
+
+ headerName = StringHead(oneHeader, colon);
+ headerValue = Substring(oneHeader, colon + 1);
+
+ headerName.Trim(kWhitespace);
+ headerValue.Trim(kWhitespace);
+
+ headersString.Cut(0, crlf + 2);
+
+ //
+ // FINALLY: we can set the header!
+ //
+
+ rv = httpChannel->SetRequestHeader(headerName, headerValue, true);
+ NS_ENSURE_SUCCESS(rv, rv);
+ }
+
+ MOZ_ASSERT_UNREACHABLE("oops");
+ return NS_ERROR_UNEXPECTED;
+}
+
+/* static */ uint32_t nsDocShell::ComputeURILoaderFlags(
+ BrowsingContext* aBrowsingContext, uint32_t aLoadType) {
+ MOZ_ASSERT(aBrowsingContext);
+
+ uint32_t openFlags = 0;
+ if (aLoadType == LOAD_LINK) {
+ openFlags |= nsIURILoader::IS_CONTENT_PREFERRED;
+ }
+ if (!aBrowsingContext->GetAllowContentRetargeting()) {
+ openFlags |= nsIURILoader::DONT_RETARGET;
+ }
+
+ return openFlags;
+}
+
+nsresult nsDocShell::OpenInitializedChannel(nsIChannel* aChannel,
+ nsIURILoader* aURILoader,
+ uint32_t aOpenFlags) {
+ nsresult rv = NS_OK;
+
+ // If anything fails here, make sure to clear our initial ClientSource.
+ auto cleanupInitialClient =
+ MakeScopeExit([&] { mInitialClientSource.reset(); });
+
+ nsCOMPtr<nsPIDOMWindowOuter> win = GetWindow();
+ NS_ENSURE_TRUE(win, NS_ERROR_FAILURE);
+
+ MaybeCreateInitialClientSource();
+
+ // Let the client channel helper know if we are using DocumentChannel,
+ // since redirects get handled in the parent process in that case.
+ RefPtr<net::DocumentChannel> docChannel = do_QueryObject(aChannel);
+ if (docChannel && XRE_IsContentProcess()) {
+ // Tell the content process nsDocumentOpenInfo to not try to do
+ // any sort of targeting.
+ aOpenFlags |= nsIURILoader::DONT_RETARGET;
+ }
+
+ // Since we are loading a document we need to make sure the proper reserved
+ // and initial client data is stored on the nsILoadInfo. The
+ // ClientChannelHelper does this and ensures that it is propagated properly
+ // on redirects. We pass no reserved client here so that the helper will
+ // create the reserved ClientSource if necessary.
+ Maybe<ClientInfo> noReservedClient;
+ if (docChannel) {
+ // When using DocumentChannel, all redirect handling is done in the parent,
+ // so we just need the child variant to watch for the internal redirect
+ // to the final channel.
+ rv = AddClientChannelHelperInChild(
+ aChannel, win->EventTargetFor(TaskCategory::Other));
+ docChannel->SetInitialClientInfo(GetInitialClientInfo());
+ } else {
+ rv = AddClientChannelHelper(aChannel, std::move(noReservedClient),
+ GetInitialClientInfo(),
+ win->EventTargetFor(TaskCategory::Other));
+ }
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ rv = aURILoader->OpenURI(aChannel, aOpenFlags, this);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ // We're about to load a new page and it may take time before necko
+ // gives back any data, so main thread might have a chance to process a
+ // collector slice
+ nsJSContext::MaybeRunNextCollectorSlice(this, JS::GCReason::DOCSHELL);
+
+ // Success. Keep the initial ClientSource if it exists.
+ cleanupInitialClient.release();
+
+ return NS_OK;
+}
+
+nsresult nsDocShell::OpenRedirectedChannel(nsDocShellLoadState* aLoadState) {
+ nsCOMPtr<nsIChannel> channel = aLoadState->GetPendingRedirectedChannel();
+ MOZ_ASSERT(channel);
+
+ // If anything fails here, make sure to clear our initial ClientSource.
+ auto cleanupInitialClient =
+ MakeScopeExit([&] { mInitialClientSource.reset(); });
+
+ nsCOMPtr<nsPIDOMWindowOuter> win = GetWindow();
+ NS_ENSURE_TRUE(win, NS_ERROR_FAILURE);
+
+ MaybeCreateInitialClientSource();
+
+ nsCOMPtr<nsILoadInfo> loadInfo = channel->LoadInfo();
+
+ LoadInfo* li = static_cast<LoadInfo*>(loadInfo.get());
+ if (loadInfo->GetExternalContentPolicyType() ==
+ ExtContentPolicy::TYPE_DOCUMENT) {
+ li->UpdateBrowsingContextID(mBrowsingContext->Id());
+ } else if (loadInfo->GetExternalContentPolicyType() ==
+ ExtContentPolicy::TYPE_SUBDOCUMENT) {
+ li->UpdateFrameBrowsingContextID(mBrowsingContext->Id());
+ }
+ // TODO: more attributes need to be updated on the LoadInfo (bug 1561706)
+
+ // If we did a process switch, then we should have an existing allocated
+ // ClientInfo, so we just need to allocate a corresponding ClientSource.
+ CreateReservedSourceIfNeeded(channel,
+ win->EventTargetFor(TaskCategory::Other));
+
+ RefPtr<nsDocumentOpenInfo> loader =
+ new nsDocumentOpenInfo(this, nsIURILoader::DONT_RETARGET, nullptr);
+ channel->SetLoadGroup(mLoadGroup);
+
+ MOZ_ALWAYS_SUCCEEDS(loader->Prepare());
+
+ nsresult rv = NS_OK;
+ if (XRE_IsParentProcess()) {
+ // If we're in the parent, the we don't have an nsIChildChannel, just
+ // the original channel, which is already open in this process.
+
+ // DocumentLoadListener expects to get an nsIParentChannel, so
+ // we create a wrapper around the channel and nsIStreamListener
+ // that forwards functionality as needed, and then we register
+ // it under the provided identifier.
+ RefPtr<ParentChannelWrapper> wrapper =
+ new ParentChannelWrapper(channel, loader);
+ wrapper->Register(aLoadState->GetPendingRedirectChannelRegistrarId());
+
+ mLoadGroup->AddRequest(channel, nullptr);
+ } else if (nsCOMPtr<nsIChildChannel> childChannel =
+ do_QueryInterface(channel)) {
+ // Our channel was redirected from another process, so doesn't need to
+ // be opened again. However, it does need its listener hooked up
+ // correctly.
+ rv = childChannel->CompleteRedirectSetup(loader);
+ } else {
+ // It's possible for the redirected channel to not implement
+ // nsIChildChannel and be entirely local (like srcdoc). In that case we
+ // can just open the local instance and it will work.
+ rv = channel->AsyncOpen(loader);
+ }
+ if (rv == NS_ERROR_NO_CONTENT) {
+ return NS_OK;
+ }
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ // Success. Keep the initial ClientSource if it exists.
+ cleanupInitialClient.release();
+ return NS_OK;
+}
+
+nsresult nsDocShell::ScrollToAnchor(bool aCurHasRef, bool aNewHasRef,
+ nsACString& aNewHash, uint32_t aLoadType) {
+ if (!mCurrentURI) {
+ return NS_OK;
+ }
+
+ RefPtr<PresShell> presShell = GetPresShell();
+ if (!presShell) {
+ // If we failed to get the shell, or if there is no shell,
+ // nothing left to do here.
+ return NS_OK;
+ }
+
+ nsIScrollableFrame* rootScroll = presShell->GetRootScrollFrameAsScrollable();
+ if (rootScroll) {
+ rootScroll->ClearDidHistoryRestore();
+ }
+
+ // If we have no new anchor, we do not want to scroll, unless there is a
+ // current anchor and we are doing a history load. So return if we have no
+ // new anchor, and there is no current anchor or the load is not a history
+ // load.
+ if ((!aCurHasRef || aLoadType != LOAD_HISTORY) && !aNewHasRef) {
+ return NS_OK;
+ }
+
+ // Both the new and current URIs refer to the same page. We can now
+ // browse to the hash stored in the new URI.
+
+ if (!aNewHash.IsEmpty()) {
+ // anchor is there, but if it's a load from history,
+ // we don't have any anchor jumping to do
+ bool scroll = aLoadType != LOAD_HISTORY && aLoadType != LOAD_RELOAD_NORMAL;
+
+ // We assume that the bytes are in UTF-8, as it says in the
+ // spec:
+ // http://www.w3.org/TR/html4/appendix/notes.html#h-B.2.1
+
+ // We try the UTF-8 string first, and then try the document's
+ // charset (see below). If the string is not UTF-8,
+ // conversion will fail and give us an empty Unicode string.
+ // In that case, we should just fall through to using the
+ // page's charset.
+ nsresult rv = NS_ERROR_FAILURE;
+ NS_ConvertUTF8toUTF16 uStr(aNewHash);
+ if (!uStr.IsEmpty()) {
+ rv = presShell->GoToAnchor(uStr, scroll, ScrollFlags::ScrollSmoothAuto);
+ }
+
+ if (NS_FAILED(rv)) {
+ char* str = ToNewCString(aNewHash, mozilla::fallible);
+ if (!str) {
+ return NS_ERROR_OUT_OF_MEMORY;
+ }
+ nsUnescape(str);
+ NS_ConvertUTF8toUTF16 utf16Str(str);
+ if (!utf16Str.IsEmpty()) {
+ rv = presShell->GoToAnchor(utf16Str, scroll,
+ ScrollFlags::ScrollSmoothAuto);
+ }
+ free(str);
+ }
+
+ // Above will fail if the anchor name is not UTF-8. Need to
+ // convert from document charset to unicode.
+ if (NS_FAILED(rv)) {
+ // Get a document charset
+ NS_ENSURE_TRUE(mContentViewer, NS_ERROR_FAILURE);
+ Document* doc = mContentViewer->GetDocument();
+ NS_ENSURE_TRUE(doc, NS_ERROR_FAILURE);
+ nsAutoCString charset;
+ doc->GetDocumentCharacterSet()->Name(charset);
+
+ nsCOMPtr<nsITextToSubURI> textToSubURI =
+ do_GetService(NS_ITEXTTOSUBURI_CONTRACTID, &rv);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ // Unescape and convert to unicode
+ nsAutoString uStr;
+
+ rv = textToSubURI->UnEscapeAndConvert(charset, aNewHash, uStr);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ // Ignore return value of GoToAnchor, since it will return an error
+ // if there is no such anchor in the document, which is actually a
+ // success condition for us (we want to update the session history
+ // with the new URI no matter whether we actually scrolled
+ // somewhere).
+ //
+ // When aNewHash contains "%00", unescaped string may be empty.
+ // And GoToAnchor asserts if we ask it to scroll to an empty ref.
+ presShell->GoToAnchor(uStr, scroll && !uStr.IsEmpty(),
+ ScrollFlags::ScrollSmoothAuto);
+ }
+ } else {
+ // Tell the shell it's at an anchor, without scrolling.
+ presShell->GoToAnchor(u""_ns, false);
+
+ // An empty anchor was found, but if it's a load from history,
+ // we don't have to jump to the top of the page. Scrollbar
+ // position will be restored by the caller, based on positions
+ // stored in session history.
+ if (aLoadType == LOAD_HISTORY || aLoadType == LOAD_RELOAD_NORMAL) {
+ return NS_OK;
+ }
+ // An empty anchor. Scroll to the top of the page. Ignore the
+ // return value; failure to scroll here (e.g. if there is no
+ // root scrollframe) is not grounds for canceling the load!
+ SetCurScrollPosEx(0, 0);
+ }
+
+ return NS_OK;
+}
+
+bool nsDocShell::OnNewURI(nsIURI* aURI, nsIChannel* aChannel,
+ nsIPrincipal* aTriggeringPrincipal,
+ nsIPrincipal* aPrincipalToInherit,
+ nsIPrincipal* aPartitionedPrincipalToInherit,
+ nsIContentSecurityPolicy* aCsp,
+ bool aFireOnLocationChange, bool aAddToGlobalHistory,
+ bool aCloneSHChildren) {
+ MOZ_ASSERT(aURI, "uri is null");
+ MOZ_ASSERT(!aChannel || !aTriggeringPrincipal, "Shouldn't have both set");
+
+ MOZ_ASSERT(!aPrincipalToInherit ||
+ (aPrincipalToInherit && aTriggeringPrincipal));
+
+#if defined(DEBUG)
+ if (MOZ_LOG_TEST(gDocShellLog, LogLevel::Debug)) {
+ nsAutoCString chanName;
+ if (aChannel) {
+ aChannel->GetName(chanName);
+ } else {
+ chanName.AssignLiteral("<no channel>");
+ }
+
+ MOZ_LOG(gDocShellLog, LogLevel::Debug,
+ ("nsDocShell[%p]::OnNewURI(\"%s\", [%s], 0x%x)\n", this,
+ aURI->GetSpecOrDefault().get(), chanName.get(), mLoadType));
+ }
+#endif
+
+ bool equalUri = false;
+
+ // Get the post data and the HTTP response code from the channel.
+ uint32_t responseStatus = 0;
+ nsCOMPtr<nsIInputStream> inputStream;
+ if (aChannel) {
+ nsCOMPtr<nsIHttpChannel> httpChannel(do_QueryInterface(aChannel));
+
+ // Check if the HTTPChannel is hiding under a multiPartChannel
+ if (!httpChannel) {
+ GetHttpChannel(aChannel, getter_AddRefs(httpChannel));
+ }
+
+ if (httpChannel) {
+ nsCOMPtr<nsIUploadChannel> uploadChannel(do_QueryInterface(httpChannel));
+ if (uploadChannel) {
+ uploadChannel->GetUploadStream(getter_AddRefs(inputStream));
+ }
+
+ // If the response status indicates an error, unlink this session
+ // history entry from any entries sharing its document.
+ nsresult rv = httpChannel->GetResponseStatus(&responseStatus);
+ if (mLSHE && NS_SUCCEEDED(rv) && responseStatus >= 400) {
+ mLSHE->AbandonBFCacheEntry();
+ // FIXME Do the same for mLoadingEntry
+ }
+ }
+ }
+
+ // Determine if this type of load should update history.
+ bool updateGHistory = ShouldUpdateGlobalHistory(mLoadType);
+
+ // We don't update session history on reload unless we're loading
+ // an iframe in shift-reload case.
+ bool updateSHistory = mBrowsingContext->ShouldUpdateSessionHistory(mLoadType);
+
+ // Create SH Entry (mLSHE) only if there is a SessionHistory object in the
+ // root browsing context.
+ // FIXME If session history in the parent is enabled then we only do this if
+ // the session history object is in process, otherwise we can't really
+ // use the mLSHE anyway. Once session history is only stored in the
+ // parent then this code will probably be removed anyway.
+ RefPtr<ChildSHistory> rootSH = GetRootSessionHistory();
+ if (!rootSH) {
+ updateSHistory = false;
+ updateGHistory = false; // XXX Why global history too?
+ }
+
+ // Check if the url to be loaded is the same as the one already loaded.
+ if (mCurrentURI) {
+ aURI->Equals(mCurrentURI, &equalUri);
+ }
+
+#ifdef DEBUG
+ bool shAvailable = (rootSH != nullptr);
+
+ // XXX This log message is almost useless because |updateSHistory|
+ // and |updateGHistory| are not correct at this point.
+
+ MOZ_LOG(gDocShellLog, LogLevel::Debug,
+ (" shAvailable=%i updateSHistory=%i updateGHistory=%i"
+ " equalURI=%i\n",
+ shAvailable, updateSHistory, updateGHistory, equalUri));
+#endif
+
+ /* If the url to be loaded is the same as the one already there,
+ * and the original loadType is LOAD_NORMAL, LOAD_LINK, or
+ * LOAD_STOP_CONTENT, set loadType to LOAD_NORMAL_REPLACE so that
+ * AddToSessionHistory() won't mess with the current SHEntry and
+ * if this page has any frame children, it also will be handled
+ * properly. see bug 83684
+ *
+ * NB: If mOSHE is null but we have a current URI, then it probably
+ * means that we must be at the transient about:blank content viewer;
+ * we should let the normal load continue, since there's nothing to
+ * replace. Sometimes this happens after a session restore (eg process
+ * switch) and mCurrentURI is not about:blank; we assume we can let the load
+ * continue (Bug 1301399).
+ *
+ * XXX Hopefully changing the loadType at this time will not hurt
+ * anywhere. The other way to take care of sequentially repeating
+ * frameset pages is to add new methods to nsIDocShellTreeItem.
+ * Hopefully I don't have to do that.
+ */
+ if (equalUri &&
+ (mozilla::SessionHistoryInParent() ? !!mActiveEntry : !!mOSHE) &&
+ (mLoadType == LOAD_NORMAL || mLoadType == LOAD_LINK ||
+ mLoadType == LOAD_STOP_CONTENT) &&
+ !inputStream) {
+ mLoadType = LOAD_NORMAL_REPLACE;
+ }
+
+ // If this is a refresh to the currently loaded url, we don't
+ // have to update session or global history.
+ if (mLoadType == LOAD_REFRESH && !inputStream && equalUri) {
+ SetHistoryEntryAndUpdateBC(Some<nsISHEntry*>(mOSHE), Nothing());
+ }
+
+ /* If the user pressed shift-reload, cache will create a new cache key
+ * for the page. Save the new cacheKey in Session History.
+ * see bug 90098
+ */
+ if (aChannel && IsForceReloadType(mLoadType)) {
+ MOZ_ASSERT(!updateSHistory || IsSubframe(),
+ "We shouldn't be updating session history for forced"
+ " reloads unless we're in a newly created iframe!");
+
+ nsCOMPtr<nsICacheInfoChannel> cacheChannel(do_QueryInterface(aChannel));
+ uint32_t cacheKey = 0;
+ // Get the Cache Key and store it in SH.
+ if (cacheChannel) {
+ cacheChannel->GetCacheKey(&cacheKey);
+ }
+ // If we already have a loading history entry, store the new cache key
+ // in it. Otherwise, since we're doing a reload and won't be updating
+ // our history entry, store the cache key in our current history entry.
+ SetCacheKeyOnHistoryEntry(mLSHE ? mLSHE : mOSHE, cacheKey);
+
+ if (!mozilla::SessionHistoryInParent()) {
+ // Since we're force-reloading, clear all the sub frame history.
+ ClearFrameHistory(mLSHE);
+ ClearFrameHistory(mOSHE);
+ }
+ }
+
+ if (!mozilla::SessionHistoryInParent()) {
+ // Clear subframe history on refresh.
+ // XXX: history.go(0) won't go this path as mLoadType is LOAD_HISTORY in
+ // this case. One should re-validate after bug 1331865 fixed.
+ if (mLoadType == LOAD_REFRESH) {
+ ClearFrameHistory(mLSHE);
+ ClearFrameHistory(mOSHE);
+ }
+
+ if (updateSHistory) {
+ // Update session history if necessary...
+ if (!mLSHE && (mItemType == typeContent) && mURIResultedInDocument) {
+ /* This is a fresh page getting loaded for the first time
+ *.Create a Entry for it and add it to SH, if this is the
+ * rootDocShell
+ */
+ (void)AddToSessionHistory(aURI, aChannel, aTriggeringPrincipal,
+ aPrincipalToInherit,
+ aPartitionedPrincipalToInherit, aCsp,
+ aCloneSHChildren, getter_AddRefs(mLSHE));
+ }
+ } else if (GetSessionHistory() && mLSHE && mURIResultedInDocument) {
+ // Even if we don't add anything to SHistory, ensure the current index
+ // points to the same SHEntry as our mLSHE.
+
+ GetSessionHistory()->LegacySHistory()->EnsureCorrectEntryAtCurrIndex(
+ mLSHE);
+ }
+ }
+
+ // If this is a POST request, we do not want to include this in global
+ // history.
+ if (ShouldAddURIVisit(aChannel) && updateGHistory && aAddToGlobalHistory &&
+ !net::ChannelIsPost(aChannel)) {
+ nsCOMPtr<nsIURI> previousURI;
+ uint32_t previousFlags = 0;
+
+ if (mLoadType & LOAD_CMD_RELOAD) {
+ // On a reload request, we don't set redirecting flags.
+ previousURI = aURI;
+ } else {
+ ExtractLastVisit(aChannel, getter_AddRefs(previousURI), &previousFlags);
+ }
+
+ AddURIVisit(aURI, previousURI, previousFlags, responseStatus);
+ }
+
+ // If this was a history load or a refresh, or it was a history load but
+ // later changed to LOAD_NORMAL_REPLACE due to redirection, update the index
+ // in session history.
+ if (!mozilla::SessionHistoryInParent() && rootSH &&
+ ((mLoadType & (LOAD_CMD_HISTORY | LOAD_CMD_RELOAD)) ||
+ mLoadType == LOAD_NORMAL_REPLACE || mLoadType == LOAD_REFRESH_REPLACE)) {
+ mPreviousEntryIndex = rootSH->Index();
+ if (!mozilla::SessionHistoryInParent()) {
+ rootSH->LegacySHistory()->UpdateIndex();
+ }
+ mLoadedEntryIndex = rootSH->Index();
+ MOZ_LOG(gPageCacheLog, LogLevel::Verbose,
+ ("Previous index: %d, Loaded index: %d", mPreviousEntryIndex,
+ mLoadedEntryIndex));
+ }
+
+ // aCloneSHChildren exactly means "we are not loading a new document".
+ uint32_t locationFlags =
+ aCloneSHChildren ? uint32_t(LOCATION_CHANGE_SAME_DOCUMENT) : 0;
+
+ bool onLocationChangeNeeded =
+ SetCurrentURI(aURI, aChannel, aFireOnLocationChange,
+ /* aIsInitialAboutBlank */ false, locationFlags);
+ // Make sure to store the referrer from the channel, if any
+ nsCOMPtr<nsIHttpChannel> httpChannel(do_QueryInterface(aChannel));
+ if (httpChannel) {
+ mReferrerInfo = httpChannel->GetReferrerInfo();
+ }
+ return onLocationChangeNeeded;
+}
+
+Maybe<Wireframe> nsDocShell::GetWireframe() {
+ const bool collectWireFrame =
+ mozilla::SessionHistoryInParent() &&
+ StaticPrefs::browser_history_collectWireframes() &&
+ mBrowsingContext->IsTopContent() && mActiveEntry;
+
+ if (!collectWireFrame) {
+ return Nothing();
+ }
+
+ RefPtr<Document> doc = mContentViewer->GetDocument();
+ Nullable<Wireframe> wireframe;
+ doc->GetWireframeWithoutFlushing(false, wireframe);
+ if (wireframe.IsNull()) {
+ return Nothing();
+ }
+ return Some(wireframe.Value());
+}
+
+bool nsDocShell::CollectWireframe() {
+ Maybe<Wireframe> wireframe = GetWireframe();
+ if (wireframe.isNothing()) {
+ return false;
+ }
+
+ if (XRE_IsParentProcess()) {
+ SessionHistoryEntry* entry =
+ mBrowsingContext->Canonical()->GetActiveSessionHistoryEntry();
+ if (entry) {
+ entry->SetWireframe(wireframe);
+ }
+ } else {
+ mozilla::Unused
+ << ContentChild::GetSingleton()->SendSessionHistoryEntryWireframe(
+ mBrowsingContext, wireframe.ref());
+ }
+
+ return true;
+}
+
+//*****************************************************************************
+// nsDocShell: Session History
+//*****************************************************************************
+
+NS_IMETHODIMP
+nsDocShell::AddState(JS::Handle<JS::Value> aData, const nsAString& aTitle,
+ const nsAString& aURL, bool aReplace, JSContext* aCx) {
+ MOZ_LOG(gSHLog, LogLevel::Debug,
+ ("nsDocShell[%p]: AddState(..., %s, %s, %d)", this,
+ NS_ConvertUTF16toUTF8(aTitle).get(),
+ NS_ConvertUTF16toUTF8(aURL).get(), aReplace));
+ // Implements History.pushState and History.replaceState
+
+ // Here's what we do, roughly in the order specified by HTML5. The specific
+ // steps we are executing are at
+ // <https://html.spec.whatwg.org/multipage/history.html#dom-history-pushstate>
+ // and
+ // <https://html.spec.whatwg.org/multipage/history.html#url-and-history-update-steps>.
+ // This function basically implements #dom-history-pushstate and
+ // UpdateURLAndHistory implements #url-and-history-update-steps.
+ //
+ // A. Serialize aData using structured clone. This is #dom-history-pushstate
+ // step 5.
+ // B. If the third argument is present, #dom-history-pushstate step 7.
+ // 7.1. Resolve the url, relative to our document.
+ // 7.2. If (a) fails, raise a SECURITY_ERR
+ // 7.4. Compare the resulting absolute URL to the document's address. If
+ // any part of the URLs difer other than the <path>, <query>, and
+ // <fragment> components, raise a SECURITY_ERR and abort.
+ // C. If !aReplace, #url-and-history-update-steps steps 2.1-2.3:
+ // Remove from the session history all entries after the current entry,
+ // as we would after a regular navigation, and save the current
+ // entry's scroll position (bug 590573).
+ // D. #url-and-history-update-steps step 2.4 or step 3. As apropriate,
+ // either add a state object entry to the session history after the
+ // current entry with the following properties, or modify the current
+ // session history entry to set
+ // a. cloned data as the state object,
+ // b. if the third argument was present, the absolute URL found in
+ // step 2
+ // Also clear the new history entry's POST data (see bug 580069).
+ // E. If aReplace is false (i.e. we're doing a pushState instead of a
+ // replaceState), notify bfcache that we've navigated to a new page.
+ // F. If the third argument is present, set the document's current address
+ // to the absolute URL found in step B. This is
+ // #url-and-history-update-steps step 4.
+ //
+ // It's important that this function not run arbitrary scripts after step A
+ // and before completing step E. For example, if a script called
+ // history.back() before we completed step E, bfcache might destroy an
+ // active content viewer. Since EvictOutOfRangeContentViewers at the end of
+ // step E might run script, we can't just put a script blocker around the
+ // critical section.
+ //
+ // Note that we completely ignore the aTitle parameter.
+
+ nsresult rv;
+
+ // Don't clobber the load type of an existing network load.
+ AutoRestore<uint32_t> loadTypeResetter(mLoadType);
+
+ // pushState effectively becomes replaceState when we've started a network
+ // load but haven't adopted its document yet. This mirrors what we do with
+ // changes to the hash at this stage of the game.
+ if (JustStartedNetworkLoad()) {
+ aReplace = true;
+ }
+
+ RefPtr<Document> document = GetDocument();
+ NS_ENSURE_TRUE(document, NS_ERROR_FAILURE);
+
+ // Step A: Serialize aData using structured clone.
+ // https://html.spec.whatwg.org/multipage/history.html#dom-history-pushstate
+ // step 5.
+ nsCOMPtr<nsIStructuredCloneContainer> scContainer;
+
+ // scContainer->Init might cause arbitrary JS to run, and this code might
+ // navigate the page we're on, potentially to a different origin! (bug
+ // 634834) To protect against this, we abort if our principal changes due
+ // to the InitFromJSVal() call.
+ {
+ RefPtr<Document> origDocument = GetDocument();
+ if (!origDocument) {
+ return NS_ERROR_DOM_SECURITY_ERR;
+ }
+ nsCOMPtr<nsIPrincipal> origPrincipal = origDocument->NodePrincipal();
+
+ scContainer = new nsStructuredCloneContainer();
+ rv = scContainer->InitFromJSVal(aData, aCx);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ RefPtr<Document> newDocument = GetDocument();
+ if (!newDocument) {
+ return NS_ERROR_DOM_SECURITY_ERR;
+ }
+ nsCOMPtr<nsIPrincipal> newPrincipal = newDocument->NodePrincipal();
+
+ bool principalsEqual = false;
+ origPrincipal->Equals(newPrincipal, &principalsEqual);
+ NS_ENSURE_TRUE(principalsEqual, NS_ERROR_DOM_SECURITY_ERR);
+ }
+
+ // Check that the state object isn't too long.
+ int32_t maxStateObjSize = StaticPrefs::browser_history_maxStateObjectSize();
+ if (maxStateObjSize < 0) {
+ maxStateObjSize = 0;
+ }
+
+ uint64_t scSize;
+ rv = scContainer->GetSerializedNBytes(&scSize);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ NS_ENSURE_TRUE(scSize <= (uint32_t)maxStateObjSize, NS_ERROR_ILLEGAL_VALUE);
+
+ // Step B: Resolve aURL.
+ // https://html.spec.whatwg.org/multipage/history.html#dom-history-pushstate
+ // step 7.
+ bool equalURIs = true;
+ nsCOMPtr<nsIURI> currentURI;
+ if (mCurrentURI) {
+ currentURI = nsIOService::CreateExposableURI(mCurrentURI);
+ } else {
+ currentURI = mCurrentURI;
+ }
+ nsCOMPtr<nsIURI> newURI;
+ if (aURL.Length() == 0) {
+ newURI = currentURI;
+ } else {
+ // 7.1: Resolve aURL relative to mURI
+
+ nsIURI* docBaseURI = document->GetDocBaseURI();
+ if (!docBaseURI) {
+ return NS_ERROR_FAILURE;
+ }
+
+ nsAutoCString spec;
+ docBaseURI->GetSpec(spec);
+
+ rv = NS_NewURI(getter_AddRefs(newURI), aURL,
+ document->GetDocumentCharacterSet(), docBaseURI);
+
+ // 7.2: If 2a fails, raise a SECURITY_ERR
+ if (NS_FAILED(rv)) {
+ return NS_ERROR_DOM_SECURITY_ERR;
+ }
+
+ // 7.4 and 7.5: Same-origin check.
+ if (!nsContentUtils::URIIsLocalFile(newURI)) {
+ // In addition to checking that the security manager says that
+ // the new URI has the same origin as our current URI, we also
+ // check that the two URIs have the same userpass. (The
+ // security manager says that |http://foo.com| and
+ // |http://me@foo.com| have the same origin.) currentURI
+ // won't contain the password part of the userpass, so this
+ // means that it's never valid to specify a password in a
+ // pushState or replaceState URI.
+
+ nsCOMPtr<nsIScriptSecurityManager> secMan =
+ do_GetService(NS_SCRIPTSECURITYMANAGER_CONTRACTID);
+ NS_ENSURE_TRUE(secMan, NS_ERROR_FAILURE);
+
+ // It's very important that we check that newURI is of the same
+ // origin as currentURI, not docBaseURI, because a page can
+ // set docBaseURI arbitrarily to any domain.
+ nsAutoCString currentUserPass, newUserPass;
+ NS_ENSURE_SUCCESS(currentURI->GetUserPass(currentUserPass),
+ NS_ERROR_FAILURE);
+ NS_ENSURE_SUCCESS(newURI->GetUserPass(newUserPass), NS_ERROR_FAILURE);
+ bool isPrivateWin =
+ document->NodePrincipal()->OriginAttributesRef().mPrivateBrowsingId >
+ 0;
+ if (NS_FAILED(secMan->CheckSameOriginURI(currentURI, newURI, true,
+ isPrivateWin)) ||
+ !currentUserPass.Equals(newUserPass)) {
+ return NS_ERROR_DOM_SECURITY_ERR;
+ }
+ } else {
+ // It's a file:// URI
+ nsCOMPtr<nsIPrincipal> principal = document->GetPrincipal();
+
+ if (!principal || NS_FAILED(principal->CheckMayLoadWithReporting(
+ newURI, false, document->InnerWindowID()))) {
+ return NS_ERROR_DOM_SECURITY_ERR;
+ }
+ }
+
+ if (currentURI) {
+ currentURI->Equals(newURI, &equalURIs);
+ } else {
+ equalURIs = false;
+ }
+
+ } // end of same-origin check
+
+ // Step 8: call "URL and history update steps"
+ rv = UpdateURLAndHistory(document, newURI, scContainer, aTitle, aReplace,
+ currentURI, equalURIs);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ return NS_OK;
+}
+
+nsresult nsDocShell::UpdateURLAndHistory(Document* aDocument, nsIURI* aNewURI,
+ nsIStructuredCloneContainer* aData,
+ const nsAString& aTitle, bool aReplace,
+ nsIURI* aCurrentURI, bool aEqualURIs) {
+ // Implements
+ // https://html.spec.whatwg.org/multipage/history.html#url-and-history-update-steps
+
+ // If we have a pending title change, handle it before creating a new entry.
+ aDocument->DoNotifyPossibleTitleChange();
+
+ // Step 2, if aReplace is false: Create a new entry in the session
+ // history. This will erase all SHEntries after the new entry and make this
+ // entry the current one. This operation may modify mOSHE, which we need
+ // later, so we keep a reference here.
+ NS_ENSURE_TRUE(mOSHE || mActiveEntry || aReplace, NS_ERROR_FAILURE);
+ nsCOMPtr<nsISHEntry> oldOSHE = mOSHE;
+
+ // If this push/replaceState changed the document's current URI and the new
+ // URI differs from the old URI in more than the hash, or if the old
+ // SHEntry's URI was modified in this way by a push/replaceState call
+ // set URIWasModified to true for the current SHEntry (bug 669671).
+ bool sameExceptHashes = true;
+ aNewURI->EqualsExceptRef(aCurrentURI, &sameExceptHashes);
+ bool uriWasModified;
+ if (sameExceptHashes) {
+ if (mozilla::SessionHistoryInParent()) {
+ uriWasModified = mActiveEntry && mActiveEntry->GetURIWasModified();
+ } else {
+ uriWasModified = oldOSHE && oldOSHE->GetURIWasModified();
+ }
+ } else {
+ uriWasModified = true;
+ }
+
+ mLoadType = LOAD_PUSHSTATE;
+
+ nsCOMPtr<nsISHEntry> newSHEntry;
+ if (!aReplace) {
+ // Step 2.
+
+ // Step 2.2, "Remove any tasks queued by the history traversal task
+ // source that are associated with any Document objects in the
+ // top-level browsing context's document family." This is very hard in
+ // SessionHistoryInParent since we can't synchronously access the
+ // pending navigations that are already sent to the parent. We can
+ // abort any AsyncGo navigations that are waiting to be sent. If we
+ // send a message to the parent, it would be processed after any
+ // navigations previously sent. So long as we consider the "history
+ // traversal task source" to be the list in this process we match the
+ // spec. If we move the entire list to the parent, we can handle the
+ // aborting of loads there, but we don't have a way to synchronously
+ // remove entries as we do here for non-SHIP.
+ RefPtr<ChildSHistory> shistory = GetRootSessionHistory();
+ if (shistory) {
+ shistory->RemovePendingHistoryNavigations();
+ }
+
+ nsPoint scrollPos = GetCurScrollPos();
+
+ bool scrollRestorationIsManual;
+ if (mozilla::SessionHistoryInParent()) {
+ // FIXME Need to save the current scroll position on mActiveEntry.
+ scrollRestorationIsManual = mActiveEntry->GetScrollRestorationIsManual();
+ } else {
+ // Save the current scroll position (bug 590573). Step 2.3.
+ mOSHE->SetScrollPosition(scrollPos.x, scrollPos.y);
+
+ scrollRestorationIsManual = mOSHE->GetScrollRestorationIsManual();
+ }
+
+ nsCOMPtr<nsIContentSecurityPolicy> csp = aDocument->GetCsp();
+
+ if (mozilla::SessionHistoryInParent()) {
+ MOZ_LOG(gSHLog, LogLevel::Debug,
+ ("nsDocShell %p UpdateActiveEntry (not replacing)", this));
+ nsString title(mActiveEntry->GetTitle());
+ UpdateActiveEntry(false,
+ /* aPreviousScrollPos = */ Some(scrollPos), aNewURI,
+ /* aOriginalURI = */ nullptr,
+ /* aReferrerInfo = */ nullptr,
+ /* aTriggeringPrincipal = */ aDocument->NodePrincipal(),
+ csp, title, scrollRestorationIsManual, aData,
+ uriWasModified);
+ } else {
+ // Since we're not changing which page we have loaded, pass
+ // true for aCloneChildren.
+ nsresult rv = AddToSessionHistory(
+ aNewURI, nullptr,
+ aDocument->NodePrincipal(), // triggeringPrincipal
+ nullptr, nullptr, csp, true, getter_AddRefs(newSHEntry));
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ NS_ENSURE_TRUE(newSHEntry, NS_ERROR_FAILURE);
+
+ // Session history entries created by pushState inherit scroll restoration
+ // mode from the current entry.
+ newSHEntry->SetScrollRestorationIsManual(scrollRestorationIsManual);
+
+ nsString title;
+ mOSHE->GetTitle(title);
+
+ // Set the new SHEntry's title (bug 655273).
+ newSHEntry->SetTitle(title);
+
+ // Link the new SHEntry to the old SHEntry's BFCache entry, since the
+ // two entries correspond to the same document.
+ NS_ENSURE_SUCCESS(newSHEntry->AdoptBFCacheEntry(oldOSHE),
+ NS_ERROR_FAILURE);
+
+ // AddToSessionHistory may not modify mOSHE. In case it doesn't,
+ // we'll just set mOSHE here.
+ mOSHE = newSHEntry;
+ }
+ } else if (mozilla::SessionHistoryInParent()) {
+ MOZ_LOG(gSHLog, LogLevel::Debug,
+ ("nsDocShell %p UpdateActiveEntry (replacing) mActiveEntry %p",
+ this, mActiveEntry.get()));
+ // Setting the resultPrincipalURI to nullptr is fine here: it will cause
+ // NS_GetFinalChannelURI to use the originalURI as the URI, which is aNewURI
+ // in our case. We could also set it to aNewURI, with the same result.
+ // We don't use aTitle here, see bug 544535.
+ nsString title;
+ nsCOMPtr<nsIReferrerInfo> referrerInfo;
+ if (mActiveEntry) {
+ title = mActiveEntry->GetTitle();
+ referrerInfo = mActiveEntry->GetReferrerInfo();
+ } else {
+ referrerInfo = nullptr;
+ }
+ UpdateActiveEntry(
+ true, /* aPreviousScrollPos = */ Nothing(), aNewURI, aNewURI,
+ /* aReferrerInfo = */ referrerInfo, aDocument->NodePrincipal(),
+ aDocument->GetCsp(), title,
+ mActiveEntry && mActiveEntry->GetScrollRestorationIsManual(), aData,
+ uriWasModified);
+ } else {
+ // Step 3.
+ newSHEntry = mOSHE;
+
+ MOZ_LOG(gSHLog, LogLevel::Debug, ("nsDocShell %p step 3", this));
+ // Since we're not changing which page we have loaded, pass
+ // true for aCloneChildren.
+ if (!newSHEntry) {
+ nsresult rv = AddToSessionHistory(
+ aNewURI, nullptr,
+ aDocument->NodePrincipal(), // triggeringPrincipal
+ nullptr, nullptr, aDocument->GetCsp(), true,
+ getter_AddRefs(newSHEntry));
+ NS_ENSURE_SUCCESS(rv, rv);
+ mOSHE = newSHEntry;
+ }
+
+ newSHEntry->SetURI(aNewURI);
+ newSHEntry->SetOriginalURI(aNewURI);
+ // We replaced the URI of the entry, clear the unstripped URI as it
+ // shouldn't be used for reloads anymore.
+ newSHEntry->SetUnstrippedURI(nullptr);
+ // Setting the resultPrincipalURI to nullptr is fine here: it will cause
+ // NS_GetFinalChannelURI to use the originalURI as the URI, which is aNewURI
+ // in our case. We could also set it to aNewURI, with the same result.
+ newSHEntry->SetResultPrincipalURI(nullptr);
+ newSHEntry->SetLoadReplace(false);
+ }
+
+ if (!mozilla::SessionHistoryInParent()) {
+ // Step 2.4 and 3: Modify new/original session history entry and clear its
+ // POST data, if there is any.
+ newSHEntry->SetStateData(aData);
+ newSHEntry->SetPostData(nullptr);
+
+ newSHEntry->SetURIWasModified(uriWasModified);
+
+ // Step E as described at the top of AddState: If aReplace is false,
+ // indicating that we're doing a pushState rather than a replaceState,
+ // notify bfcache that we've added a page to the history so it can evict
+ // content viewers if appropriate. Otherwise call ReplaceEntry so that we
+ // notify nsIHistoryListeners that an entry was replaced. We may not have a
+ // root session history if this call is coming from a document.open() in a
+ // docshell subtree that disables session history.
+ RefPtr<ChildSHistory> rootSH = GetRootSessionHistory();
+ if (rootSH) {
+ rootSH->LegacySHistory()->EvictContentViewersOrReplaceEntry(newSHEntry,
+ aReplace);
+ }
+ }
+
+ // Step 4: If the document's URI changed, update document's URI and update
+ // global history.
+ //
+ // We need to call FireOnLocationChange so that the browser's address bar
+ // gets updated and the back button is enabled, but we only need to
+ // explicitly call FireOnLocationChange if we're not calling SetCurrentURI,
+ // since SetCurrentURI will call FireOnLocationChange for us.
+ //
+ // Both SetCurrentURI(...) and FireDummyOnLocationChange() pass
+ // nullptr for aRequest param to FireOnLocationChange(...). Such an update
+ // notification is allowed only when we know docshell is not loading a new
+ // document and it requires LOCATION_CHANGE_SAME_DOCUMENT flag. Otherwise,
+ // FireOnLocationChange(...) breaks security UI.
+ //
+ // If the docshell is shutting down, don't update the document URI, as we
+ // can't load into a docshell that is being destroyed.
+ if (!aEqualURIs && !mIsBeingDestroyed) {
+ aDocument->SetDocumentURI(aNewURI);
+ SetCurrentURI(aNewURI, nullptr, /* aFireLocationChange */ true,
+ /* aIsInitialAboutBlank */ false,
+ GetSameDocumentNavigationFlags(aNewURI));
+
+ AddURIVisit(aNewURI, aCurrentURI, 0);
+
+ // AddURIVisit doesn't set the title for the new URI in global history,
+ // so do that here.
+ UpdateGlobalHistoryTitle(aNewURI);
+
+ // Inform the favicon service that our old favicon applies to this new
+ // URI.
+ CopyFavicon(aCurrentURI, aNewURI, UsePrivateBrowsing());
+ } else {
+ FireDummyOnLocationChange();
+ }
+ aDocument->SetStateObject(aData);
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetCurrentScrollRestorationIsManual(bool* aIsManual) {
+ if (mozilla::SessionHistoryInParent()) {
+ *aIsManual = mActiveEntry && mActiveEntry->GetScrollRestorationIsManual();
+ return NS_OK;
+ }
+
+ *aIsManual = false;
+ if (mOSHE) {
+ return mOSHE->GetScrollRestorationIsManual(aIsManual);
+ }
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::SetCurrentScrollRestorationIsManual(bool aIsManual) {
+ SetScrollRestorationIsManualOnHistoryEntry(mOSHE, aIsManual);
+
+ return NS_OK;
+}
+
+void nsDocShell::SetScrollRestorationIsManualOnHistoryEntry(
+ nsISHEntry* aSHEntry, bool aIsManual) {
+ if (aSHEntry) {
+ aSHEntry->SetScrollRestorationIsManual(aIsManual);
+ }
+
+ if (mActiveEntry && mBrowsingContext) {
+ mActiveEntry->SetScrollRestorationIsManual(aIsManual);
+ if (XRE_IsParentProcess()) {
+ SessionHistoryEntry* entry =
+ mBrowsingContext->Canonical()->GetActiveSessionHistoryEntry();
+ if (entry) {
+ entry->SetScrollRestorationIsManual(aIsManual);
+ }
+ } else {
+ mozilla::Unused << ContentChild::GetSingleton()
+ ->SendSessionHistoryEntryScrollRestorationIsManual(
+ mBrowsingContext, aIsManual);
+ }
+ }
+}
+
+void nsDocShell::SetCacheKeyOnHistoryEntry(nsISHEntry* aSHEntry,
+ uint32_t aCacheKey) {
+ if (aSHEntry) {
+ aSHEntry->SetCacheKey(aCacheKey);
+ }
+
+ if (mActiveEntry && mBrowsingContext) {
+ mActiveEntry->SetCacheKey(aCacheKey);
+ if (XRE_IsParentProcess()) {
+ SessionHistoryEntry* entry =
+ mBrowsingContext->Canonical()->GetActiveSessionHistoryEntry();
+ if (entry) {
+ entry->SetCacheKey(aCacheKey);
+ }
+ } else {
+ mozilla::Unused
+ << ContentChild::GetSingleton()->SendSessionHistoryEntryCacheKey(
+ mBrowsingContext, aCacheKey);
+ }
+ }
+}
+
+/* static */
+bool nsDocShell::ShouldAddToSessionHistory(nsIURI* aURI, nsIChannel* aChannel) {
+ // I believe none of the about: urls should go in the history. But then
+ // that could just be me... If the intent is only deny about:blank then we
+ // should just do a spec compare, rather than two gets of the scheme and
+ // then the path. -Gagan
+ nsresult rv;
+ nsAutoCString buf;
+
+ rv = aURI->GetScheme(buf);
+ if (NS_FAILED(rv)) {
+ return false;
+ }
+
+ if (buf.EqualsLiteral("about")) {
+ rv = aURI->GetPathQueryRef(buf);
+ if (NS_FAILED(rv)) {
+ return false;
+ }
+
+ if (buf.EqualsLiteral("blank")) {
+ return false;
+ }
+ // We only want to add about:newtab if it's not privileged, and
+ // if it is not configured to show the blank page.
+ if (buf.EqualsLiteral("newtab")) {
+ if (!StaticPrefs::browser_newtabpage_enabled()) {
+ return false;
+ }
+
+ NS_ENSURE_TRUE(aChannel, false);
+ nsCOMPtr<nsIPrincipal> resultPrincipal;
+ rv = nsContentUtils::GetSecurityManager()->GetChannelResultPrincipal(
+ aChannel, getter_AddRefs(resultPrincipal));
+ NS_ENSURE_SUCCESS(rv, false);
+ return !resultPrincipal->IsSystemPrincipal();
+ }
+ }
+
+ return true;
+}
+
+nsresult nsDocShell::AddToSessionHistory(
+ nsIURI* aURI, nsIChannel* aChannel, nsIPrincipal* aTriggeringPrincipal,
+ nsIPrincipal* aPrincipalToInherit,
+ nsIPrincipal* aPartitionedPrincipalToInherit,
+ nsIContentSecurityPolicy* aCsp, bool aCloneChildren,
+ nsISHEntry** aNewEntry) {
+ MOZ_ASSERT(aURI, "uri is null");
+ MOZ_ASSERT(!aChannel || !aTriggeringPrincipal, "Shouldn't have both set");
+ MOZ_DIAGNOSTIC_ASSERT(!mozilla::SessionHistoryInParent());
+
+#if defined(DEBUG)
+ if (MOZ_LOG_TEST(gDocShellLog, LogLevel::Debug)) {
+ nsAutoCString chanName;
+ if (aChannel) {
+ aChannel->GetName(chanName);
+ } else {
+ chanName.AssignLiteral("<no channel>");
+ }
+
+ MOZ_LOG(gDocShellLog, LogLevel::Debug,
+ ("nsDocShell[%p]::AddToSessionHistory(\"%s\", [%s])\n", this,
+ aURI->GetSpecOrDefault().get(), chanName.get()));
+ }
+#endif
+
+ nsresult rv = NS_OK;
+ nsCOMPtr<nsISHEntry> entry;
+
+ /*
+ * If this is a LOAD_FLAGS_REPLACE_HISTORY in a subframe, we use
+ * the existing SH entry in the page and replace the url and
+ * other vitalities.
+ */
+ if (LOAD_TYPE_HAS_FLAGS(mLoadType, LOAD_FLAGS_REPLACE_HISTORY) &&
+ !mBrowsingContext->IsTop()) {
+ // This is a subframe
+ entry = mOSHE;
+ if (entry) {
+ entry->ClearEntry();
+ }
+ }
+
+ // Create a new entry if necessary.
+ if (!entry) {
+ entry = new nsSHEntry();
+ }
+
+ // Get the post data & referrer
+ nsCOMPtr<nsIInputStream> inputStream;
+ nsCOMPtr<nsIURI> originalURI;
+ nsCOMPtr<nsIURI> resultPrincipalURI;
+ nsCOMPtr<nsIURI> unstrippedURI;
+ bool loadReplace = false;
+ nsCOMPtr<nsIReferrerInfo> referrerInfo;
+ uint32_t cacheKey = 0;
+ nsCOMPtr<nsIPrincipal> triggeringPrincipal = aTriggeringPrincipal;
+ nsCOMPtr<nsIPrincipal> principalToInherit = aPrincipalToInherit;
+ nsCOMPtr<nsIPrincipal> partitionedPrincipalToInherit =
+ aPartitionedPrincipalToInherit;
+ nsCOMPtr<nsIContentSecurityPolicy> csp = aCsp;
+ bool expired = false; // by default the page is not expired
+ bool discardLayoutState = false;
+ nsCOMPtr<nsICacheInfoChannel> cacheChannel;
+ bool userActivation = false;
+
+ if (aChannel) {
+ cacheChannel = do_QueryInterface(aChannel);
+
+ /* If there is a caching channel, get the Cache Key and store it
+ * in SH.
+ */
+ if (cacheChannel) {
+ cacheChannel->GetCacheKey(&cacheKey);
+ }
+ nsCOMPtr<nsIHttpChannel> httpChannel(do_QueryInterface(aChannel));
+
+ // Check if the httpChannel is hiding under a multipartChannel
+ if (!httpChannel) {
+ GetHttpChannel(aChannel, getter_AddRefs(httpChannel));
+ }
+ if (httpChannel) {
+ nsCOMPtr<nsIUploadChannel> uploadChannel(do_QueryInterface(httpChannel));
+ if (uploadChannel) {
+ uploadChannel->GetUploadStream(getter_AddRefs(inputStream));
+ }
+ httpChannel->GetOriginalURI(getter_AddRefs(originalURI));
+ uint32_t loadFlags;
+ aChannel->GetLoadFlags(&loadFlags);
+ loadReplace = loadFlags & nsIChannel::LOAD_REPLACE;
+ rv = httpChannel->GetReferrerInfo(getter_AddRefs(referrerInfo));
+ MOZ_ASSERT(NS_SUCCEEDED(rv));
+
+ discardLayoutState = ShouldDiscardLayoutState(httpChannel);
+ }
+
+ nsCOMPtr<nsILoadInfo> loadInfo = aChannel->LoadInfo();
+ if (!triggeringPrincipal) {
+ triggeringPrincipal = loadInfo->TriggeringPrincipal();
+ }
+ if (!csp) {
+ csp = loadInfo->GetCspToInherit();
+ }
+
+ loadInfo->GetResultPrincipalURI(getter_AddRefs(resultPrincipalURI));
+
+ loadInfo->GetUnstrippedURI(getter_AddRefs(unstrippedURI));
+
+ userActivation = loadInfo->GetHasValidUserGestureActivation();
+
+ // For now keep storing just the principal in the SHEntry.
+ if (!principalToInherit) {
+ if (loadInfo->GetLoadingSandboxed()) {
+ if (loadInfo->GetLoadingPrincipal()) {
+ principalToInherit = NullPrincipal::CreateWithInheritedAttributes(
+ loadInfo->GetLoadingPrincipal());
+ } else {
+ // get the OriginAttributes
+ OriginAttributes attrs;
+ loadInfo->GetOriginAttributes(&attrs);
+ principalToInherit = NullPrincipal::Create(attrs);
+ }
+ } else {
+ principalToInherit = loadInfo->PrincipalToInherit();
+ }
+ }
+
+ if (!partitionedPrincipalToInherit) {
+ // XXXehsan is it correct to fall back to the principal to inherit in all
+ // cases? For example, what about the cases where we are using the load
+ // info's principal to inherit? Do we need to add a similar concept to
+ // load info for partitioned principal?
+ partitionedPrincipalToInherit = principalToInherit;
+ }
+ }
+
+ nsAutoString srcdoc;
+ bool srcdocEntry = false;
+ nsCOMPtr<nsIURI> baseURI;
+
+ nsCOMPtr<nsIInputStreamChannel> inStrmChan = do_QueryInterface(aChannel);
+ if (inStrmChan) {
+ bool isSrcdocChannel;
+ inStrmChan->GetIsSrcdocChannel(&isSrcdocChannel);
+ if (isSrcdocChannel) {
+ inStrmChan->GetSrcdocData(srcdoc);
+ srcdocEntry = true;
+ inStrmChan->GetBaseURI(getter_AddRefs(baseURI));
+ } else {
+ srcdoc.SetIsVoid(true);
+ }
+ }
+ /* If cache got a 'no-store', ask SH not to store
+ * HistoryLayoutState. By default, SH will set this
+ * flag to true and save HistoryLayoutState.
+ */
+ bool saveLayoutState = !discardLayoutState;
+
+ if (cacheChannel) {
+ // Check if the page has expired from cache
+ uint32_t expTime = 0;
+ cacheChannel->GetCacheTokenExpirationTime(&expTime);
+ uint32_t now = PRTimeToSeconds(PR_Now());
+ if (expTime <= now) {
+ expired = true;
+ }
+ }
+
+ // Title is set in nsDocShell::SetTitle()
+ entry->Create(aURI, // uri
+ u""_ns, // Title
+ inputStream, // Post data stream
+ cacheKey, // CacheKey
+ mContentTypeHint, // Content-type
+ triggeringPrincipal, // Channel or provided principal
+ principalToInherit, partitionedPrincipalToInherit, csp,
+ HistoryID(), GetCreatedDynamically(), originalURI,
+ resultPrincipalURI, unstrippedURI, loadReplace, referrerInfo,
+ srcdoc, srcdocEntry, baseURI, saveLayoutState, expired,
+ userActivation);
+
+ if (mBrowsingContext->IsTop() && GetSessionHistory()) {
+ bool shouldPersist = ShouldAddToSessionHistory(aURI, aChannel);
+ Maybe<int32_t> previousEntryIndex;
+ Maybe<int32_t> loadedEntryIndex;
+ rv = GetSessionHistory()->LegacySHistory()->AddToRootSessionHistory(
+ aCloneChildren, mOSHE, mBrowsingContext, entry, mLoadType,
+ shouldPersist, &previousEntryIndex, &loadedEntryIndex);
+
+ MOZ_ASSERT(NS_SUCCEEDED(rv), "Could not add entry to root session history");
+ if (previousEntryIndex.isSome()) {
+ mPreviousEntryIndex = previousEntryIndex.value();
+ }
+ if (loadedEntryIndex.isSome()) {
+ mLoadedEntryIndex = loadedEntryIndex.value();
+ }
+
+ // aCloneChildren implies that we are retaining the same document, thus we
+ // need to signal to the top WC that the new SHEntry may receive a fresh
+ // user interaction flag.
+ if (aCloneChildren) {
+ WindowContext* topWc = mBrowsingContext->GetTopWindowContext();
+ if (topWc && !topWc->IsDiscarded()) {
+ MOZ_ALWAYS_SUCCEEDS(topWc->SetSHEntryHasUserInteraction(false));
+ }
+ }
+ } else {
+ // This is a subframe, make sure that this new SHEntry will be
+ // marked with user interaction.
+ WindowContext* topWc = mBrowsingContext->GetTopWindowContext();
+ if (topWc && !topWc->IsDiscarded()) {
+ MOZ_ALWAYS_SUCCEEDS(topWc->SetSHEntryHasUserInteraction(false));
+ }
+ if (!mOSHE || !LOAD_TYPE_HAS_FLAGS(mLoadType, LOAD_FLAGS_REPLACE_HISTORY)) {
+ rv = AddChildSHEntryToParent(entry, mBrowsingContext->ChildOffset(),
+ aCloneChildren);
+ }
+ }
+
+ // Return the new SH entry...
+ if (aNewEntry) {
+ *aNewEntry = nullptr;
+ if (NS_SUCCEEDED(rv)) {
+ entry.forget(aNewEntry);
+ }
+ }
+
+ return rv;
+}
+
+void nsDocShell::UpdateActiveEntry(
+ bool aReplace, const Maybe<nsPoint>& aPreviousScrollPos, nsIURI* aURI,
+ nsIURI* aOriginalURI, nsIReferrerInfo* aReferrerInfo,
+ nsIPrincipal* aTriggeringPrincipal, nsIContentSecurityPolicy* aCsp,
+ const nsAString& aTitle, bool aScrollRestorationIsManual,
+ nsIStructuredCloneContainer* aData, bool aURIWasModified) {
+ MOZ_ASSERT(mozilla::SessionHistoryInParent());
+ MOZ_ASSERT(aURI, "uri is null");
+ MOZ_ASSERT(mLoadType == LOAD_PUSHSTATE,
+ "This code only deals with pushState");
+ MOZ_ASSERT_IF(aPreviousScrollPos.isSome(), !aReplace);
+
+ MOZ_LOG(gSHLog, LogLevel::Debug,
+ ("Creating an active entry on nsDocShell %p to %s", this,
+ aURI->GetSpecOrDefault().get()));
+
+ // Even if we're replacing an existing entry we create new a
+ // SessionHistoryInfo. In the parent process we'll keep the existing
+ // SessionHistoryEntry, but just replace its SessionHistoryInfo, that way the
+ // entry keeps identity but its data is replaced.
+ bool replace = aReplace && mActiveEntry;
+
+ if (!replace) {
+ CollectWireframe();
+ }
+
+ if (mActiveEntry) {
+ // Link this entry to the previous active entry.
+ mActiveEntry = MakeUnique<SessionHistoryInfo>(*mActiveEntry, aURI);
+ } else {
+ mActiveEntry = MakeUnique<SessionHistoryInfo>(
+ aURI, aTriggeringPrincipal, nullptr, nullptr, aCsp, mContentTypeHint);
+ }
+ mActiveEntry->SetOriginalURI(aOriginalURI);
+ mActiveEntry->SetUnstrippedURI(nullptr);
+ mActiveEntry->SetReferrerInfo(aReferrerInfo);
+ mActiveEntry->SetTitle(aTitle);
+ mActiveEntry->SetStateData(static_cast<nsStructuredCloneContainer*>(aData));
+ mActiveEntry->SetURIWasModified(aURIWasModified);
+ mActiveEntry->SetScrollRestorationIsManual(aScrollRestorationIsManual);
+
+ if (replace) {
+ mBrowsingContext->ReplaceActiveSessionHistoryEntry(mActiveEntry.get());
+ } else {
+ mBrowsingContext->IncrementHistoryEntryCountForBrowsingContext();
+ // FIXME We should probably just compute mChildOffset in the parent
+ // instead of passing it over IPC here.
+ mBrowsingContext->SetActiveSessionHistoryEntry(
+ aPreviousScrollPos, mActiveEntry.get(), mLoadType,
+ /* aCacheKey = */ 0);
+ // FIXME Do we need to update mPreviousEntryIndex and mLoadedEntryIndex?
+ }
+}
+
+nsresult nsDocShell::LoadHistoryEntry(nsISHEntry* aEntry, uint32_t aLoadType,
+ bool aUserActivation) {
+ NS_ENSURE_TRUE(aEntry, NS_ERROR_FAILURE);
+
+ nsresult rv;
+ RefPtr<nsDocShellLoadState> loadState;
+ rv = aEntry->CreateLoadInfo(getter_AddRefs(loadState));
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ // Calling CreateAboutBlankContentViewer can set mOSHE to null, and if
+ // that's the only thing holding a ref to aEntry that will cause aEntry to
+ // die while we're loading it. So hold a strong ref to aEntry here, just
+ // in case.
+ nsCOMPtr<nsISHEntry> kungFuDeathGrip(aEntry);
+
+ loadState->SetHasValidUserGestureActivation(
+ loadState->HasValidUserGestureActivation() || aUserActivation);
+
+ return LoadHistoryEntry(loadState, aLoadType, aEntry == mOSHE);
+}
+
+nsresult nsDocShell::LoadHistoryEntry(const LoadingSessionHistoryInfo& aEntry,
+ uint32_t aLoadType,
+ bool aUserActivation) {
+ RefPtr<nsDocShellLoadState> loadState = aEntry.CreateLoadInfo();
+ loadState->SetHasValidUserGestureActivation(
+ loadState->HasValidUserGestureActivation() || aUserActivation);
+
+ return LoadHistoryEntry(loadState, aLoadType, aEntry.mLoadingCurrentEntry);
+}
+
+nsresult nsDocShell::LoadHistoryEntry(nsDocShellLoadState* aLoadState,
+ uint32_t aLoadType,
+ bool aLoadingCurrentEntry) {
+ if (!IsNavigationAllowed()) {
+ return NS_OK;
+ }
+
+ // We are setting load type afterwards so we don't have to
+ // send it in an IPC message
+ aLoadState->SetLoadType(aLoadType);
+
+ nsresult rv;
+ if (SchemeIsJavascript(aLoadState->URI())) {
+ // We're loading a URL that will execute script from inside asyncOpen.
+ // Replace the current document with about:blank now to prevent
+ // anything from the current document from leaking into any JavaScript
+ // code in the URL.
+ // Don't cache the presentation if we're going to just reload the
+ // current entry. Caching would lead to trying to save the different
+ // content viewers in the same nsISHEntry object.
+ rv = CreateAboutBlankContentViewer(
+ aLoadState->PrincipalToInherit(),
+ aLoadState->PartitionedPrincipalToInherit(), nullptr, nullptr,
+ /* aIsInitialDocument */ false, Nothing(), !aLoadingCurrentEntry);
+
+ if (NS_FAILED(rv)) {
+ // The creation of the intermittent about:blank content
+ // viewer failed for some reason (potentially because the
+ // user prevented it). Interrupt the history load.
+ return NS_OK;
+ }
+
+ if (!aLoadState->TriggeringPrincipal()) {
+ // Ensure that we have a triggeringPrincipal. Otherwise javascript:
+ // URIs will pick it up from the about:blank page we just loaded,
+ // and we don't really want even that in this case.
+ nsCOMPtr<nsIPrincipal> principal =
+ NullPrincipal::Create(GetOriginAttributes());
+ aLoadState->SetTriggeringPrincipal(principal);
+ }
+ }
+
+ /* If there is a valid postdata *and* the user pressed
+ * reload or shift-reload, take user's permission before we
+ * repost the data to the server.
+ */
+ if ((aLoadType & LOAD_CMD_RELOAD) && aLoadState->PostDataStream()) {
+ bool repost;
+ rv = ConfirmRepost(&repost);
+ if (NS_FAILED(rv)) {
+ return rv;
+ }
+
+ // If the user pressed cancel in the dialog, return. We're done here.
+ if (!repost) {
+ return NS_BINDING_ABORTED;
+ }
+ }
+
+ // If there is no valid triggeringPrincipal, we deny the load
+ MOZ_ASSERT(aLoadState->TriggeringPrincipal(),
+ "need a valid triggeringPrincipal to load from history");
+ if (!aLoadState->TriggeringPrincipal()) {
+ return NS_ERROR_FAILURE;
+ }
+
+ return InternalLoad(aLoadState); // No nsIRequest
+}
+
+NS_IMETHODIMP
+nsDocShell::PersistLayoutHistoryState() {
+ nsresult rv = NS_OK;
+
+ if (mozilla::SessionHistoryInParent() ? !!mActiveEntry : !!mOSHE) {
+ bool scrollRestorationIsManual;
+ if (mozilla::SessionHistoryInParent()) {
+ scrollRestorationIsManual = mActiveEntry->GetScrollRestorationIsManual();
+ } else {
+ scrollRestorationIsManual = mOSHE->GetScrollRestorationIsManual();
+ }
+ nsCOMPtr<nsILayoutHistoryState> layoutState;
+ if (RefPtr<PresShell> presShell = GetPresShell()) {
+ rv = presShell->CaptureHistoryState(getter_AddRefs(layoutState));
+ } else if (scrollRestorationIsManual) {
+ // Even if we don't have layout anymore, we may want to reset the
+ // current scroll state in layout history.
+ GetLayoutHistoryState(getter_AddRefs(layoutState));
+ }
+
+ if (scrollRestorationIsManual && layoutState) {
+ layoutState->ResetScrollState();
+ }
+ }
+
+ return rv;
+}
+
+void nsDocShell::SwapHistoryEntries(nsISHEntry* aOldEntry,
+ nsISHEntry* aNewEntry) {
+ if (aOldEntry == mOSHE) {
+ mOSHE = aNewEntry;
+ }
+
+ if (aOldEntry == mLSHE) {
+ mLSHE = aNewEntry;
+ }
+}
+
+void nsDocShell::SetHistoryEntryAndUpdateBC(const Maybe<nsISHEntry*>& aLSHE,
+ const Maybe<nsISHEntry*>& aOSHE) {
+ // We want to hold on to the reference in mLSHE before we update it.
+ // Otherwise, SetHistoryEntry could release the last reference to
+ // the entry while aOSHE is pointing to it.
+ nsCOMPtr<nsISHEntry> deathGripOldLSHE;
+ if (aLSHE.isSome()) {
+ deathGripOldLSHE = SetHistoryEntry(&mLSHE, aLSHE.value());
+ MOZ_ASSERT(mLSHE.get() == aLSHE.value());
+ }
+ nsCOMPtr<nsISHEntry> deathGripOldOSHE;
+ if (aOSHE.isSome()) {
+ deathGripOldOSHE = SetHistoryEntry(&mOSHE, aOSHE.value());
+ MOZ_ASSERT(mOSHE.get() == aOSHE.value());
+ }
+}
+
+already_AddRefed<nsISHEntry> nsDocShell::SetHistoryEntry(
+ nsCOMPtr<nsISHEntry>* aPtr, nsISHEntry* aEntry) {
+ // We need to sync up the docshell and session history trees for
+ // subframe navigation. If the load was in a subframe, we forward up to
+ // the root docshell, which will then recursively sync up all docshells
+ // to their corresponding entries in the new session history tree.
+ // If we don't do this, then we can cache a content viewer on the wrong
+ // cloned entry, and subsequently restore it at the wrong time.
+ RefPtr<BrowsingContext> topBC = mBrowsingContext->Top();
+ if (topBC->IsDiscarded()) {
+ topBC = nullptr;
+ }
+ RefPtr<BrowsingContext> currBC =
+ mBrowsingContext->IsDiscarded() ? nullptr : mBrowsingContext;
+ if (topBC && *aPtr) {
+ (*aPtr)->SyncTreesForSubframeNavigation(aEntry, topBC, currBC);
+ }
+ nsCOMPtr<nsISHEntry> entry(aEntry);
+ entry.swap(*aPtr);
+ return entry.forget();
+}
+
+already_AddRefed<ChildSHistory> nsDocShell::GetRootSessionHistory() {
+ RefPtr<ChildSHistory> childSHistory =
+ mBrowsingContext->Top()->GetChildSessionHistory();
+ return childSHistory.forget();
+}
+
+nsresult nsDocShell::GetHttpChannel(nsIChannel* aChannel,
+ nsIHttpChannel** aReturn) {
+ NS_ENSURE_ARG_POINTER(aReturn);
+ if (!aChannel) {
+ return NS_ERROR_FAILURE;
+ }
+
+ nsCOMPtr<nsIMultiPartChannel> multiPartChannel(do_QueryInterface(aChannel));
+ if (multiPartChannel) {
+ nsCOMPtr<nsIChannel> baseChannel;
+ multiPartChannel->GetBaseChannel(getter_AddRefs(baseChannel));
+ nsCOMPtr<nsIHttpChannel> httpChannel(do_QueryInterface(baseChannel));
+ *aReturn = httpChannel;
+ NS_IF_ADDREF(*aReturn);
+ }
+ return NS_OK;
+}
+
+bool nsDocShell::ShouldDiscardLayoutState(nsIHttpChannel* aChannel) {
+ // By default layout State will be saved.
+ if (!aChannel) {
+ return false;
+ }
+
+ // figure out if SH should be saving layout state
+ bool noStore = false;
+ Unused << aChannel->IsNoStoreResponse(&noStore);
+ return noStore;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetEditor(nsIEditor** aEditor) {
+ NS_ENSURE_ARG_POINTER(aEditor);
+ RefPtr<HTMLEditor> htmlEditor = GetHTMLEditorInternal();
+ htmlEditor.forget(aEditor);
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::SetEditor(nsIEditor* aEditor) {
+ HTMLEditor* htmlEditor = aEditor ? aEditor->GetAsHTMLEditor() : nullptr;
+ // If TextEditor comes, throw an error.
+ if (aEditor && !htmlEditor) {
+ return NS_ERROR_INVALID_ARG;
+ }
+ return SetHTMLEditorInternal(htmlEditor);
+}
+
+HTMLEditor* nsDocShell::GetHTMLEditorInternal() {
+ return mEditorData ? mEditorData->GetHTMLEditor() : nullptr;
+}
+
+nsresult nsDocShell::SetHTMLEditorInternal(HTMLEditor* aHTMLEditor) {
+ if (!aHTMLEditor && !mEditorData) {
+ return NS_OK;
+ }
+
+ nsresult rv = EnsureEditorData();
+ if (NS_FAILED(rv)) {
+ return rv;
+ }
+
+ return mEditorData->SetHTMLEditor(aHTMLEditor);
+}
+
+NS_IMETHODIMP
+nsDocShell::GetEditable(bool* aEditable) {
+ NS_ENSURE_ARG_POINTER(aEditable);
+ *aEditable = mEditorData && mEditorData->GetEditable();
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetHasEditingSession(bool* aHasEditingSession) {
+ NS_ENSURE_ARG_POINTER(aHasEditingSession);
+
+ if (mEditorData) {
+ *aHasEditingSession = !!mEditorData->GetEditingSession();
+ } else {
+ *aHasEditingSession = false;
+ }
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::MakeEditable(bool aInWaitForUriLoad) {
+ nsresult rv = EnsureEditorData();
+ if (NS_FAILED(rv)) {
+ return rv;
+ }
+
+ return mEditorData->MakeEditable(aInWaitForUriLoad);
+}
+
+/* static */ bool nsDocShell::ShouldAddURIVisit(nsIChannel* aChannel) {
+ bool needToAddURIVisit = true;
+ nsCOMPtr<nsIPropertyBag2> props(do_QueryInterface(aChannel));
+ if (props) {
+ mozilla::Unused << props->GetPropertyAsBool(
+ u"docshell.needToAddURIVisit"_ns, &needToAddURIVisit);
+ }
+
+ return needToAddURIVisit;
+}
+
+/* static */ void nsDocShell::ExtractLastVisit(
+ nsIChannel* aChannel, nsIURI** aURI, uint32_t* aChannelRedirectFlags) {
+ nsCOMPtr<nsIPropertyBag2> props(do_QueryInterface(aChannel));
+ if (!props) {
+ return;
+ }
+
+ nsresult rv;
+ nsCOMPtr<nsIURI> uri(do_GetProperty(props, u"docshell.previousURI"_ns, &rv));
+ if (NS_SUCCEEDED(rv)) {
+ uri.forget(aURI);
+
+ rv = props->GetPropertyAsUint32(u"docshell.previousFlags"_ns,
+ aChannelRedirectFlags);
+
+ NS_WARNING_ASSERTION(
+ NS_SUCCEEDED(rv),
+ "Could not fetch previous flags, URI will be treated like referrer");
+
+ } else {
+ // There is no last visit for this channel, so this must be the first
+ // link. Link the visit to the referrer of this request, if any.
+ // Treat referrer as null if there is an error getting it.
+ NS_GetReferrerFromChannel(aChannel, aURI);
+ }
+}
+
+void nsDocShell::SaveLastVisit(nsIChannel* aChannel, nsIURI* aURI,
+ uint32_t aChannelRedirectFlags) {
+ nsCOMPtr<nsIWritablePropertyBag2> props(do_QueryInterface(aChannel));
+ if (!props || !aURI) {
+ return;
+ }
+
+ props->SetPropertyAsInterface(u"docshell.previousURI"_ns, aURI);
+ props->SetPropertyAsUint32(u"docshell.previousFlags"_ns,
+ aChannelRedirectFlags);
+}
+
+/* static */ void nsDocShell::InternalAddURIVisit(
+ nsIURI* aURI, nsIURI* aPreviousURI, uint32_t aChannelRedirectFlags,
+ uint32_t aResponseStatus, BrowsingContext* aBrowsingContext,
+ nsIWidget* aWidget, uint32_t aLoadType) {
+ MOZ_ASSERT(aURI, "Visited URI is null!");
+ MOZ_ASSERT(aLoadType != LOAD_ERROR_PAGE && aLoadType != LOAD_BYPASS_HISTORY,
+ "Do not add error or bypass pages to global history");
+
+ bool usePrivateBrowsing = false;
+ aBrowsingContext->GetUsePrivateBrowsing(&usePrivateBrowsing);
+
+ // Only content-type docshells save URI visits. Also don't do
+ // anything here if we're not supposed to use global history.
+ if (!aBrowsingContext->IsContent() ||
+ !aBrowsingContext->GetUseGlobalHistory() || usePrivateBrowsing) {
+ return;
+ }
+
+ nsCOMPtr<IHistory> history = components::History::Service();
+
+ if (history) {
+ uint32_t visitURIFlags = 0;
+
+ if (aBrowsingContext->IsTop()) {
+ visitURIFlags |= IHistory::TOP_LEVEL;
+ }
+
+ if (aChannelRedirectFlags & nsIChannelEventSink::REDIRECT_TEMPORARY) {
+ visitURIFlags |= IHistory::REDIRECT_TEMPORARY;
+ } else if (aChannelRedirectFlags &
+ nsIChannelEventSink::REDIRECT_PERMANENT) {
+ visitURIFlags |= IHistory::REDIRECT_PERMANENT;
+ } else {
+ MOZ_ASSERT(!aChannelRedirectFlags,
+ "One of REDIRECT_TEMPORARY or REDIRECT_PERMANENT must be set "
+ "if any flags in aChannelRedirectFlags is set.");
+ }
+
+ if (aResponseStatus >= 300 && aResponseStatus < 400) {
+ visitURIFlags |= IHistory::REDIRECT_SOURCE;
+ if (aResponseStatus == 301 || aResponseStatus == 308) {
+ visitURIFlags |= IHistory::REDIRECT_SOURCE_PERMANENT;
+ }
+ }
+ // Errors 400-501 and 505 are considered unrecoverable, in the sense a
+ // simple retry attempt by the user is unlikely to solve them.
+ // 408 is special cased, since may actually indicate a temporary
+ // connection problem.
+ else if (aResponseStatus != 408 &&
+ ((aResponseStatus >= 400 && aResponseStatus <= 501) ||
+ aResponseStatus == 505)) {
+ visitURIFlags |= IHistory::UNRECOVERABLE_ERROR;
+ }
+
+ mozilla::Unused << history->VisitURI(aWidget, aURI, aPreviousURI,
+ visitURIFlags,
+ aBrowsingContext->BrowserId());
+ }
+}
+
+void nsDocShell::AddURIVisit(nsIURI* aURI, nsIURI* aPreviousURI,
+ uint32_t aChannelRedirectFlags,
+ uint32_t aResponseStatus) {
+ nsPIDOMWindowOuter* outer = GetWindow();
+ nsCOMPtr<nsIWidget> widget = widget::WidgetUtils::DOMWindowToWidget(outer);
+
+ InternalAddURIVisit(aURI, aPreviousURI, aChannelRedirectFlags,
+ aResponseStatus, mBrowsingContext, widget, mLoadType);
+}
+
+//*****************************************************************************
+// nsDocShell: Helper Routines
+//*****************************************************************************
+
+NS_IMETHODIMP
+nsDocShell::SetLoadType(uint32_t aLoadType) {
+ mLoadType = aLoadType;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetLoadType(uint32_t* aLoadType) {
+ *aLoadType = mLoadType;
+ return NS_OK;
+}
+
+nsresult nsDocShell::ConfirmRepost(bool* aRepost) {
+ if (StaticPrefs::dom_confirm_repost_testing_always_accept()) {
+ *aRepost = true;
+ return NS_OK;
+ }
+
+ nsCOMPtr<nsIPromptCollection> prompter =
+ do_GetService("@mozilla.org/embedcomp/prompt-collection;1");
+ if (!prompter) {
+ return NS_ERROR_NOT_AVAILABLE;
+ }
+
+ return prompter->ConfirmRepost(mBrowsingContext, aRepost);
+}
+
+nsresult nsDocShell::GetPromptAndStringBundle(nsIPrompt** aPrompt,
+ nsIStringBundle** aStringBundle) {
+ NS_ENSURE_SUCCESS(GetInterface(NS_GET_IID(nsIPrompt), (void**)aPrompt),
+ NS_ERROR_FAILURE);
+
+ nsCOMPtr<nsIStringBundleService> stringBundleService =
+ mozilla::components::StringBundle::Service();
+ NS_ENSURE_TRUE(stringBundleService, NS_ERROR_FAILURE);
+
+ NS_ENSURE_SUCCESS(
+ stringBundleService->CreateBundle(kAppstringsBundleURL, aStringBundle),
+ NS_ERROR_FAILURE);
+
+ return NS_OK;
+}
+
+nsIScrollableFrame* nsDocShell::GetRootScrollFrame() {
+ PresShell* presShell = GetPresShell();
+ NS_ENSURE_TRUE(presShell, nullptr);
+
+ return presShell->GetRootScrollFrameAsScrollable();
+}
+
+nsresult nsDocShell::EnsureScriptEnvironment() {
+ if (mScriptGlobal) {
+ return NS_OK;
+ }
+
+ if (mIsBeingDestroyed) {
+ return NS_ERROR_NOT_AVAILABLE;
+ }
+
+#ifdef DEBUG
+ NS_ASSERTION(!mInEnsureScriptEnv,
+ "Infinite loop! Calling EnsureScriptEnvironment() from "
+ "within EnsureScriptEnvironment()!");
+
+ // Yeah, this isn't re-entrant safe, but that's ok since if we
+ // re-enter this method, we'll infinitely loop...
+ AutoRestore<bool> boolSetter(mInEnsureScriptEnv);
+ mInEnsureScriptEnv = true;
+#endif
+
+ nsCOMPtr<nsIWebBrowserChrome> browserChrome(do_GetInterface(mTreeOwner));
+ NS_ENSURE_TRUE(browserChrome, NS_ERROR_NOT_AVAILABLE);
+
+ uint32_t chromeFlags;
+ browserChrome->GetChromeFlags(&chromeFlags);
+
+ // If our window is modal and we're not opened as chrome, make
+ // this window a modal content window.
+ mScriptGlobal = nsGlobalWindowOuter::Create(this, mItemType == typeChrome);
+ MOZ_ASSERT(mScriptGlobal);
+
+ // Ensure the script object is set up to run script.
+ return mScriptGlobal->EnsureScriptEnvironment();
+}
+
+nsresult nsDocShell::EnsureEditorData() {
+ MOZ_ASSERT(!mIsBeingDestroyed);
+
+ bool openDocHasDetachedEditor = mOSHE && mOSHE->HasDetachedEditor();
+ if (!mEditorData && !mIsBeingDestroyed && !openDocHasDetachedEditor) {
+ // We shouldn't recreate the editor data if it already exists, or
+ // we're shutting down, or we already have a detached editor data
+ // stored in the session history. We should only have one editordata
+ // per docshell.
+ mEditorData = MakeUnique<nsDocShellEditorData>(this);
+ }
+
+ return mEditorData ? NS_OK : NS_ERROR_NOT_AVAILABLE;
+}
+
+nsresult nsDocShell::EnsureFind() {
+ if (!mFind) {
+ mFind = new nsWebBrowserFind();
+ }
+
+ // we promise that the nsIWebBrowserFind that we return has been set
+ // up to point to the focused, or content window, so we have to
+ // set that up each time.
+
+ nsIScriptGlobalObject* scriptGO = GetScriptGlobalObject();
+ NS_ENSURE_TRUE(scriptGO, NS_ERROR_UNEXPECTED);
+
+ // default to our window
+ nsCOMPtr<nsPIDOMWindowOuter> ourWindow = do_QueryInterface(scriptGO);
+ nsCOMPtr<nsPIDOMWindowOuter> windowToSearch;
+ nsFocusManager::GetFocusedDescendant(ourWindow,
+ nsFocusManager::eIncludeAllDescendants,
+ getter_AddRefs(windowToSearch));
+
+ nsCOMPtr<nsIWebBrowserFindInFrames> findInFrames = do_QueryInterface(mFind);
+ if (!findInFrames) {
+ return NS_ERROR_NO_INTERFACE;
+ }
+
+ nsresult rv = findInFrames->SetRootSearchFrame(ourWindow);
+ if (NS_FAILED(rv)) {
+ return rv;
+ }
+ rv = findInFrames->SetCurrentSearchFrame(windowToSearch);
+ if (NS_FAILED(rv)) {
+ return rv;
+ }
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::IsBeingDestroyed(bool* aDoomed) {
+ NS_ENSURE_ARG(aDoomed);
+ *aDoomed = mIsBeingDestroyed;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetIsExecutingOnLoadHandler(bool* aResult) {
+ NS_ENSURE_ARG(aResult);
+ *aResult = mIsExecutingOnLoadHandler;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetLayoutHistoryState(nsILayoutHistoryState** aLayoutHistoryState) {
+ nsCOMPtr<nsILayoutHistoryState> state;
+ if (mozilla::SessionHistoryInParent()) {
+ if (mActiveEntry) {
+ state = mActiveEntry->GetLayoutHistoryState();
+ }
+ } else {
+ if (mOSHE) {
+ state = mOSHE->GetLayoutHistoryState();
+ }
+ }
+ state.forget(aLayoutHistoryState);
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::SetLayoutHistoryState(nsILayoutHistoryState* aLayoutHistoryState) {
+ if (mOSHE) {
+ mOSHE->SetLayoutHistoryState(aLayoutHistoryState);
+ }
+ if (mActiveEntry) {
+ mActiveEntry->SetLayoutHistoryState(aLayoutHistoryState);
+ }
+ return NS_OK;
+}
+
+nsDocShell::InterfaceRequestorProxy::InterfaceRequestorProxy(
+ nsIInterfaceRequestor* aRequestor) {
+ if (aRequestor) {
+ mWeakPtr = do_GetWeakReference(aRequestor);
+ }
+}
+
+nsDocShell::InterfaceRequestorProxy::~InterfaceRequestorProxy() {
+ mWeakPtr = nullptr;
+}
+
+NS_IMPL_ISUPPORTS(nsDocShell::InterfaceRequestorProxy, nsIInterfaceRequestor)
+
+NS_IMETHODIMP
+nsDocShell::InterfaceRequestorProxy::GetInterface(const nsIID& aIID,
+ void** aSink) {
+ NS_ENSURE_ARG_POINTER(aSink);
+ nsCOMPtr<nsIInterfaceRequestor> ifReq = do_QueryReferent(mWeakPtr);
+ if (ifReq) {
+ return ifReq->GetInterface(aIID, aSink);
+ }
+ *aSink = nullptr;
+ return NS_NOINTERFACE;
+}
+
+//*****************************************************************************
+// nsDocShell::nsIAuthPromptProvider
+//*****************************************************************************
+
+NS_IMETHODIMP
+nsDocShell::GetAuthPrompt(uint32_t aPromptReason, const nsIID& aIID,
+ void** aResult) {
+ // a priority prompt request will override a false mAllowAuth setting
+ bool priorityPrompt = (aPromptReason == PROMPT_PROXY);
+
+ if (!mAllowAuth && !priorityPrompt) {
+ return NS_ERROR_NOT_AVAILABLE;
+ }
+
+ // we're either allowing auth, or it's a proxy request
+ nsresult rv;
+ nsCOMPtr<nsIPromptFactory> wwatch =
+ do_GetService(NS_WINDOWWATCHER_CONTRACTID, &rv);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ rv = EnsureScriptEnvironment();
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ // Get the an auth prompter for our window so that the parenting
+ // of the dialogs works as it should when using tabs.
+
+ return wwatch->GetPrompt(mScriptGlobal, aIID,
+ reinterpret_cast<void**>(aResult));
+}
+
+//*****************************************************************************
+// nsDocShell::nsILoadContext
+//*****************************************************************************
+
+NS_IMETHODIMP
+nsDocShell::GetAssociatedWindow(mozIDOMWindowProxy** aWindow) {
+ CallGetInterface(this, aWindow);
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetTopWindow(mozIDOMWindowProxy** aWindow) {
+ return mBrowsingContext->GetTopWindow(aWindow);
+}
+
+NS_IMETHODIMP
+nsDocShell::GetTopFrameElement(Element** aElement) {
+ return mBrowsingContext->GetTopFrameElement(aElement);
+}
+
+NS_IMETHODIMP
+nsDocShell::GetUseTrackingProtection(bool* aUseTrackingProtection) {
+ return mBrowsingContext->GetUseTrackingProtection(aUseTrackingProtection);
+}
+
+NS_IMETHODIMP
+nsDocShell::SetUseTrackingProtection(bool aUseTrackingProtection) {
+ return mBrowsingContext->SetUseTrackingProtection(aUseTrackingProtection);
+}
+
+NS_IMETHODIMP
+nsDocShell::GetIsContent(bool* aIsContent) {
+ *aIsContent = (mItemType == typeContent);
+ return NS_OK;
+}
+
+bool nsDocShell::IsOKToLoadURI(nsIURI* aURI) {
+ MOZ_ASSERT(aURI, "Must have a URI!");
+
+ if (!mFiredUnloadEvent) {
+ return true;
+ }
+
+ if (!mLoadingURI) {
+ return false;
+ }
+
+ bool isPrivateWin = false;
+ Document* doc = GetDocument();
+ if (doc) {
+ isPrivateWin =
+ doc->NodePrincipal()->OriginAttributesRef().mPrivateBrowsingId > 0;
+ }
+
+ nsCOMPtr<nsIScriptSecurityManager> secMan =
+ do_GetService(NS_SCRIPTSECURITYMANAGER_CONTRACTID);
+ return secMan && NS_SUCCEEDED(secMan->CheckSameOriginURI(
+ aURI, mLoadingURI, false, isPrivateWin));
+}
+
+//
+// Routines for selection and clipboard
+//
+nsresult nsDocShell::GetControllerForCommand(const char* aCommand,
+ nsIController** aResult) {
+ NS_ENSURE_ARG_POINTER(aResult);
+ *aResult = nullptr;
+
+ NS_ENSURE_TRUE(mScriptGlobal, NS_ERROR_FAILURE);
+
+ nsCOMPtr<nsPIWindowRoot> root = mScriptGlobal->GetTopWindowRoot();
+ NS_ENSURE_TRUE(root, NS_ERROR_FAILURE);
+
+ return root->GetControllerForCommand(aCommand, false /* for any window */,
+ aResult);
+}
+
+NS_IMETHODIMP
+nsDocShell::IsCommandEnabled(const char* aCommand, bool* aResult) {
+ NS_ENSURE_ARG_POINTER(aResult);
+ *aResult = false;
+
+ nsresult rv = NS_ERROR_FAILURE;
+
+ nsCOMPtr<nsIController> controller;
+ rv = GetControllerForCommand(aCommand, getter_AddRefs(controller));
+ if (controller) {
+ rv = controller->IsCommandEnabled(aCommand, aResult);
+ }
+
+ return rv;
+}
+
+NS_IMETHODIMP
+nsDocShell::DoCommand(const char* aCommand) {
+ nsresult rv = NS_ERROR_FAILURE;
+
+ nsCOMPtr<nsIController> controller;
+ rv = GetControllerForCommand(aCommand, getter_AddRefs(controller));
+ if (controller) {
+ rv = controller->DoCommand(aCommand);
+ }
+
+ return rv;
+}
+
+NS_IMETHODIMP
+nsDocShell::DoCommandWithParams(const char* aCommand,
+ nsICommandParams* aParams) {
+ nsCOMPtr<nsIController> controller;
+ nsresult rv = GetControllerForCommand(aCommand, getter_AddRefs(controller));
+ if (NS_WARN_IF(NS_FAILED(rv))) {
+ return rv;
+ }
+
+ nsCOMPtr<nsICommandController> commandController =
+ do_QueryInterface(controller, &rv);
+ if (NS_WARN_IF(NS_FAILED(rv))) {
+ return rv;
+ }
+
+ return commandController->DoCommandWithParams(aCommand, aParams);
+}
+
+nsresult nsDocShell::EnsureCommandHandler() {
+ if (!mCommandManager) {
+ if (nsCOMPtr<nsPIDOMWindowOuter> domWindow = GetWindow()) {
+ mCommandManager = new nsCommandManager(domWindow);
+ }
+ }
+ return mCommandManager ? NS_OK : NS_ERROR_FAILURE;
+}
+
+// link handling
+
+class OnLinkClickEvent : public Runnable {
+ public:
+ OnLinkClickEvent(nsDocShell* aHandler, nsIContent* aContent,
+ nsDocShellLoadState* aLoadState, bool aNoOpenerImplied,
+ bool aIsTrusted, nsIPrincipal* aTriggeringPrincipal);
+
+ NS_IMETHOD Run() override {
+ AutoPopupStatePusher popupStatePusher(mPopupState);
+
+ // We need to set up an AutoJSAPI here for the following reason: When we
+ // do OnLinkClickSync we'll eventually end up in
+ // nsGlobalWindow::OpenInternal which only does popup blocking if
+ // !LegacyIsCallerChromeOrNativeCode(). So we need to fake things so that
+ // we don't look like native code as far as LegacyIsCallerNativeCode() is
+ // concerned.
+ AutoJSAPI jsapi;
+ if (mIsTrusted || jsapi.Init(mContent->OwnerDoc()->GetScopeObject())) {
+ mHandler->OnLinkClickSync(mContent, mLoadState, mNoOpenerImplied,
+ mTriggeringPrincipal);
+ }
+ return NS_OK;
+ }
+
+ private:
+ RefPtr<nsDocShell> mHandler;
+ nsCOMPtr<nsIContent> mContent;
+ RefPtr<nsDocShellLoadState> mLoadState;
+ nsCOMPtr<nsIPrincipal> mTriggeringPrincipal;
+ PopupBlocker::PopupControlState mPopupState;
+ bool mNoOpenerImplied;
+ bool mIsTrusted;
+};
+
+OnLinkClickEvent::OnLinkClickEvent(nsDocShell* aHandler, nsIContent* aContent,
+ nsDocShellLoadState* aLoadState,
+ bool aNoOpenerImplied, bool aIsTrusted,
+ nsIPrincipal* aTriggeringPrincipal)
+ : mozilla::Runnable("OnLinkClickEvent"),
+ mHandler(aHandler),
+ mContent(aContent),
+ mLoadState(aLoadState),
+ mTriggeringPrincipal(aTriggeringPrincipal),
+ mPopupState(PopupBlocker::GetPopupControlState()),
+ mNoOpenerImplied(aNoOpenerImplied),
+ mIsTrusted(aIsTrusted) {}
+
+nsresult nsDocShell::OnLinkClick(
+ nsIContent* aContent, nsIURI* aURI, const nsAString& aTargetSpec,
+ const nsAString& aFileName, nsIInputStream* aPostDataStream,
+ nsIInputStream* aHeadersDataStream, bool aIsUserTriggered, bool aIsTrusted,
+ nsIPrincipal* aTriggeringPrincipal, nsIContentSecurityPolicy* aCsp) {
+#ifndef ANDROID
+ MOZ_ASSERT(aTriggeringPrincipal, "Need a valid triggeringPrincipal");
+#endif
+ NS_ASSERTION(NS_IsMainThread(), "wrong thread");
+
+ if (!IsNavigationAllowed() || !IsOKToLoadURI(aURI)) {
+ return NS_OK;
+ }
+
+ // On history navigation through Back/Forward buttons, don't execute
+ // automatic JavaScript redirection such as |anchorElement.click()| or
+ // |formElement.submit()|.
+ //
+ // XXX |formElement.submit()| bypasses this checkpoint because it calls
+ // nsDocShell::OnLinkClickSync(...) instead.
+ if (ShouldBlockLoadingForBackButton()) {
+ return NS_OK;
+ }
+
+ if (aContent->IsEditable()) {
+ return NS_OK;
+ }
+
+ Document* ownerDoc = aContent->OwnerDoc();
+ if (nsContentUtils::IsExternalProtocol(aURI)) {
+ ownerDoc->EnsureNotEnteringAndExitFullscreen();
+ }
+
+ bool noOpenerImplied = false;
+ nsAutoString target(aTargetSpec);
+ if (aFileName.IsVoid() &&
+ ShouldOpenInBlankTarget(aTargetSpec, aURI, aContent, aIsUserTriggered)) {
+ target = u"_blank";
+ if (!aTargetSpec.Equals(target)) {
+ noOpenerImplied = true;
+ }
+ }
+
+ RefPtr<nsDocShellLoadState> loadState = new nsDocShellLoadState(aURI);
+ loadState->SetTarget(target);
+ loadState->SetFileName(aFileName);
+ loadState->SetPostDataStream(aPostDataStream);
+ loadState->SetHeadersStream(aHeadersDataStream);
+ loadState->SetFirstParty(true);
+ loadState->SetTriggeringPrincipal(
+ aTriggeringPrincipal ? aTriggeringPrincipal : aContent->NodePrincipal());
+ loadState->SetPrincipalToInherit(aContent->NodePrincipal());
+ loadState->SetCsp(aCsp ? aCsp : aContent->GetCsp());
+ loadState->SetAllowFocusMove(UserActivation::IsHandlingUserInput());
+
+ nsCOMPtr<nsIRunnable> ev =
+ new OnLinkClickEvent(this, aContent, loadState, noOpenerImplied,
+ aIsTrusted, aTriggeringPrincipal);
+ return Dispatch(TaskCategory::UI, ev.forget());
+}
+
+bool nsDocShell::ShouldOpenInBlankTarget(const nsAString& aOriginalTarget,
+ nsIURI* aLinkURI, nsIContent* aContent,
+ bool aIsUserTriggered) {
+ if (net::SchemeIsJavascript(aLinkURI)) {
+ return false;
+ }
+
+ // External links from within app tabs should always open in new tabs
+ // instead of replacing the app tab's page (Bug 575561)
+ // nsIURI.host can throw for non-nsStandardURL nsIURIs. If we fail to
+ // get either host, just return false to use the original target.
+ nsAutoCString linkHost;
+ if (NS_FAILED(aLinkURI->GetHost(linkHost))) {
+ return false;
+ }
+
+ // The targetTopLevelLinkClicksToBlank property on BrowsingContext allows
+ // privileged code to change the default targeting behaviour. In particular,
+ // if a user-initiated link click for the (or targetting the) top-level frame
+ // is detected, we default the target to "_blank" to give it a new
+ // top-level BrowsingContext.
+ if (mBrowsingContext->TargetTopLevelLinkClicksToBlank() && aIsUserTriggered &&
+ ((aOriginalTarget.IsEmpty() && mBrowsingContext->IsTop()) ||
+ aOriginalTarget == u"_top"_ns)) {
+ return true;
+ }
+
+ // Don't modify non-default targets.
+ if (!aOriginalTarget.IsEmpty()) {
+ return false;
+ }
+
+ // Only check targets that are in extension panels or app tabs.
+ // (isAppTab will be false for app tab subframes).
+ nsString mmGroup = mBrowsingContext->Top()->GetMessageManagerGroup();
+ if (!mmGroup.EqualsLiteral("webext-browsers") &&
+ !mBrowsingContext->IsAppTab()) {
+ return false;
+ }
+
+ nsCOMPtr<nsIURI> docURI = aContent->OwnerDoc()->GetDocumentURIObject();
+ if (!docURI) {
+ return false;
+ }
+
+ nsAutoCString docHost;
+ if (NS_FAILED(docURI->GetHost(docHost))) {
+ return false;
+ }
+
+ if (linkHost.Equals(docHost)) {
+ return false;
+ }
+
+ // Special case: ignore "www" prefix if it is part of host string
+ return linkHost.Length() < docHost.Length()
+ ? !docHost.Equals("www."_ns + linkHost)
+ : !linkHost.Equals("www."_ns + docHost);
+}
+
+static bool ElementCanHaveNoopener(nsIContent* aContent) {
+ // Make sure we are dealing with either an <A>, <AREA>, or <FORM> element in
+ // the HTML, XHTML, or SVG namespace.
+ return aContent->IsAnyOfHTMLElements(nsGkAtoms::a, nsGkAtoms::area,
+ nsGkAtoms::form) ||
+ aContent->IsSVGElement(nsGkAtoms::a);
+}
+
+nsresult nsDocShell::OnLinkClickSync(nsIContent* aContent,
+ nsDocShellLoadState* aLoadState,
+ bool aNoOpenerImplied,
+ nsIPrincipal* aTriggeringPrincipal) {
+ if (!IsNavigationAllowed() || !IsOKToLoadURI(aLoadState->URI())) {
+ return NS_OK;
+ }
+
+ // XXX When the linking node was HTMLFormElement, it is synchronous event.
+ // That is, the caller of this method is not |OnLinkClickEvent::Run()|
+ // but |HTMLFormElement::SubmitSubmission(...)|.
+ if (aContent->IsHTMLElement(nsGkAtoms::form) &&
+ ShouldBlockLoadingForBackButton()) {
+ return NS_OK;
+ }
+
+ if (aContent->IsEditable()) {
+ return NS_OK;
+ }
+
+ // if the triggeringPrincipal is not passed explicitly, then we
+ // fall back to using doc->NodePrincipal() as the triggeringPrincipal.
+ nsCOMPtr<nsIPrincipal> triggeringPrincipal =
+ aTriggeringPrincipal ? aTriggeringPrincipal : aContent->NodePrincipal();
+
+ {
+ // defer to an external protocol handler if necessary...
+ nsCOMPtr<nsIExternalProtocolService> extProtService =
+ do_GetService(NS_EXTERNALPROTOCOLSERVICE_CONTRACTID);
+ if (extProtService) {
+ nsAutoCString scheme;
+ aLoadState->URI()->GetScheme(scheme);
+ if (!scheme.IsEmpty()) {
+ // if the URL scheme does not correspond to an exposed protocol, then
+ // we need to hand this link click over to the external protocol
+ // handler.
+ bool isExposed;
+ nsresult rv =
+ extProtService->IsExposedProtocol(scheme.get(), &isExposed);
+ if (NS_SUCCEEDED(rv) && !isExposed) {
+ return extProtService->LoadURI(
+ aLoadState->URI(), triggeringPrincipal, nullptr, mBrowsingContext,
+ /* aTriggeredExternally */
+ false,
+ /* aHasValidUserGestureActivation */
+ aContent->OwnerDoc()->HasValidTransientUserGestureActivation());
+ }
+ }
+ }
+ }
+ uint32_t triggeringSandboxFlags = 0;
+ if (mBrowsingContext) {
+ triggeringSandboxFlags = aContent->OwnerDoc()->GetSandboxFlags();
+ }
+
+ uint32_t flags = INTERNAL_LOAD_FLAGS_NONE;
+ bool elementCanHaveNoopener = ElementCanHaveNoopener(aContent);
+ bool triggeringPrincipalIsSystemPrincipal =
+ aLoadState->TriggeringPrincipal()->IsSystemPrincipal();
+ if (elementCanHaveNoopener) {
+ MOZ_ASSERT(aContent->IsHTMLElement() || aContent->IsSVGElement());
+ nsAutoString relString;
+ aContent->AsElement()->GetAttr(kNameSpaceID_None, nsGkAtoms::rel,
+ relString);
+ nsWhitespaceTokenizerTemplate<nsContentUtils::IsHTMLWhitespace> tok(
+ relString);
+
+ bool targetBlank = aLoadState->Target().LowerCaseEqualsLiteral("_blank");
+ bool explicitOpenerSet = false;
+
+ // The opener behaviour follows a hierarchy, such that if a higher
+ // priority behaviour is specified, it always takes priority. That
+ // priority is currently: norefrerer > noopener > opener > default
+
+ while (tok.hasMoreTokens()) {
+ const nsAString& token = tok.nextToken();
+ if (token.LowerCaseEqualsLiteral("noreferrer")) {
+ flags |= INTERNAL_LOAD_FLAGS_DONT_SEND_REFERRER |
+ INTERNAL_LOAD_FLAGS_NO_OPENER;
+ // noreferrer cannot be overwritten by a 'rel=opener'.
+ explicitOpenerSet = true;
+ break;
+ }
+
+ if (token.LowerCaseEqualsLiteral("noopener")) {
+ flags |= INTERNAL_LOAD_FLAGS_NO_OPENER;
+ explicitOpenerSet = true;
+ }
+
+ if (targetBlank && StaticPrefs::dom_targetBlankNoOpener_enabled() &&
+ token.LowerCaseEqualsLiteral("opener") && !explicitOpenerSet) {
+ explicitOpenerSet = true;
+ }
+ }
+
+ if (targetBlank && StaticPrefs::dom_targetBlankNoOpener_enabled() &&
+ !explicitOpenerSet && !triggeringPrincipalIsSystemPrincipal) {
+ flags |= INTERNAL_LOAD_FLAGS_NO_OPENER;
+ }
+
+ if (aNoOpenerImplied) {
+ flags |= INTERNAL_LOAD_FLAGS_NO_OPENER;
+ }
+ }
+
+ // Get the owner document of the link that was clicked, this will be
+ // the document that the link is in, or the last document that the
+ // link was in. From that document, we'll get the URI to use as the
+ // referrer, since the current URI in this docshell may be a
+ // new document that we're in the process of loading.
+ RefPtr<Document> referrerDoc = aContent->OwnerDoc();
+
+ // Now check that the referrerDoc's inner window is the current inner
+ // window for mScriptGlobal. If it's not, then we don't want to
+ // follow this link.
+ nsPIDOMWindowInner* referrerInner = referrerDoc->GetInnerWindow();
+ if (!mScriptGlobal || !referrerInner ||
+ mScriptGlobal->GetCurrentInnerWindow() != referrerInner) {
+ // We're no longer the current inner window
+ return NS_OK;
+ }
+
+ // referrer could be null here in some odd cases, but that's ok,
+ // we'll just load the link w/o sending a referrer in those cases.
+
+ // If this is an anchor element, grab its type property to use as a hint
+ nsAutoString typeHint;
+ RefPtr<HTMLAnchorElement> anchor = HTMLAnchorElement::FromNode(aContent);
+ if (anchor) {
+ anchor->GetType(typeHint);
+ NS_ConvertUTF16toUTF8 utf8Hint(typeHint);
+ nsAutoCString type, dummy;
+ NS_ParseRequestContentType(utf8Hint, type, dummy);
+ CopyUTF8toUTF16(type, typeHint);
+ }
+
+ // Link click (or form submission) can be triggered inside an onload
+ // handler, and we don't want to add history entry in this case.
+ bool inOnLoadHandler = false;
+ GetIsExecutingOnLoadHandler(&inOnLoadHandler);
+ uint32_t loadType = inOnLoadHandler ? LOAD_NORMAL_REPLACE : LOAD_LINK;
+
+ nsCOMPtr<nsIReferrerInfo> referrerInfo =
+ elementCanHaveNoopener ? new ReferrerInfo(*aContent->AsElement())
+ : new ReferrerInfo(*referrerDoc);
+ RefPtr<WindowContext> context = mBrowsingContext->GetCurrentWindowContext();
+
+ aLoadState->SetTriggeringSandboxFlags(triggeringSandboxFlags);
+ aLoadState->SetReferrerInfo(referrerInfo);
+ aLoadState->SetInternalLoadFlags(flags);
+ aLoadState->SetTypeHint(NS_ConvertUTF16toUTF8(typeHint));
+ aLoadState->SetLoadType(loadType);
+ aLoadState->SetSourceBrowsingContext(mBrowsingContext);
+ aLoadState->SetHasValidUserGestureActivation(
+ context && context->HasValidTransientUserGestureActivation());
+
+ nsresult rv = InternalLoad(aLoadState);
+
+ if (NS_SUCCEEDED(rv)) {
+ nsPingListener::DispatchPings(this, aContent, aLoadState->URI(),
+ referrerInfo);
+ }
+
+ return rv;
+}
+
+nsresult nsDocShell::OnOverLink(nsIContent* aContent, nsIURI* aURI,
+ const nsAString& aTargetSpec) {
+ if (aContent->IsEditable()) {
+ return NS_OK;
+ }
+
+ nsresult rv = NS_ERROR_FAILURE;
+
+ nsCOMPtr<nsIWebBrowserChrome> browserChrome = do_GetInterface(mTreeOwner);
+ if (!browserChrome) {
+ return rv;
+ }
+
+ nsCOMPtr<nsIURI> exposableURI = nsIOService::CreateExposableURI(aURI);
+ nsAutoCString spec;
+ rv = exposableURI->GetDisplaySpec(spec);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ NS_ConvertUTF8toUTF16 uStr(spec);
+
+ PredictorPredict(aURI, mCurrentURI, nsINetworkPredictor::PREDICT_LINK,
+ aContent->NodePrincipal()->OriginAttributesRef(), nullptr);
+
+ rv = browserChrome->SetLinkStatus(uStr);
+ return rv;
+}
+
+nsresult nsDocShell::OnLeaveLink() {
+ nsCOMPtr<nsIWebBrowserChrome> browserChrome(do_GetInterface(mTreeOwner));
+ nsresult rv = NS_ERROR_FAILURE;
+
+ if (browserChrome) {
+ rv = browserChrome->SetLinkStatus(u""_ns);
+ }
+ return rv;
+}
+
+bool nsDocShell::ShouldBlockLoadingForBackButton() {
+ if (!(mLoadType & LOAD_CMD_HISTORY) ||
+ UserActivation::IsHandlingUserInput() ||
+ !Preferences::GetBool("accessibility.blockjsredirection")) {
+ return false;
+ }
+
+ bool canGoForward = false;
+ GetCanGoForward(&canGoForward);
+ return canGoForward;
+}
+
+bool nsDocShell::PluginsAllowedInCurrentDoc() {
+ if (!mContentViewer) {
+ return false;
+ }
+
+ Document* doc = mContentViewer->GetDocument();
+ if (!doc) {
+ return false;
+ }
+
+ return doc->GetAllowPlugins();
+}
+
+//----------------------------------------------------------------------
+// Web Shell Services API
+
+// This functions is only called when a new charset is detected in loading a
+// document.
+nsresult nsDocShell::CharsetChangeReloadDocument(
+ mozilla::NotNull<const mozilla::Encoding*> aEncoding, int32_t aSource) {
+ // XXX hack. keep the aCharset and aSource wait to pick it up
+ nsCOMPtr<nsIContentViewer> cv;
+ NS_ENSURE_SUCCESS(GetContentViewer(getter_AddRefs(cv)), NS_ERROR_FAILURE);
+ if (cv) {
+ int32_t source;
+ Unused << cv->GetReloadEncodingAndSource(&source);
+ if (aSource > source) {
+ cv->SetReloadEncodingAndSource(aEncoding, aSource);
+ if (eCharsetReloadRequested != mCharsetReloadState) {
+ mCharsetReloadState = eCharsetReloadRequested;
+ switch (mLoadType) {
+ case LOAD_RELOAD_BYPASS_PROXY_AND_CACHE:
+ return Reload(LOAD_FLAGS_CHARSET_CHANGE | LOAD_FLAGS_BYPASS_CACHE |
+ LOAD_FLAGS_BYPASS_PROXY);
+ case LOAD_RELOAD_BYPASS_CACHE:
+ return Reload(LOAD_FLAGS_CHARSET_CHANGE | LOAD_FLAGS_BYPASS_CACHE);
+ default:
+ return Reload(LOAD_FLAGS_CHARSET_CHANGE);
+ }
+ }
+ }
+ }
+ // return failure if this request is not accepted due to mCharsetReloadState
+ return NS_ERROR_DOCSHELL_REQUEST_REJECTED;
+}
+
+nsresult nsDocShell::CharsetChangeStopDocumentLoad() {
+ if (eCharsetReloadRequested != mCharsetReloadState) {
+ Stop(nsIWebNavigation::STOP_ALL);
+ return NS_OK;
+ }
+ // return failer if this request is not accepted due to mCharsetReloadState
+ return NS_ERROR_DOCSHELL_REQUEST_REJECTED;
+}
+
+NS_IMETHODIMP nsDocShell::ExitPrintPreview() {
+#if NS_PRINT_PREVIEW
+ nsCOMPtr<nsIWebBrowserPrint> viewer = do_QueryInterface(mContentViewer);
+ return viewer->ExitPrintPreview();
+#else
+ return NS_OK;
+#endif
+}
+
+/* [infallible] */
+NS_IMETHODIMP nsDocShell::GetIsTopLevelContentDocShell(
+ bool* aIsTopLevelContentDocShell) {
+ *aIsTopLevelContentDocShell = false;
+
+ if (mItemType == typeContent) {
+ *aIsTopLevelContentDocShell = mBrowsingContext->IsTopContent();
+ }
+
+ return NS_OK;
+}
+
+// Implements nsILoadContext.originAttributes
+NS_IMETHODIMP
+nsDocShell::GetScriptableOriginAttributes(JSContext* aCx,
+ JS::MutableHandle<JS::Value> aVal) {
+ return mBrowsingContext->GetScriptableOriginAttributes(aCx, aVal);
+}
+
+// Implements nsIDocShell.GetOriginAttributes()
+NS_IMETHODIMP
+nsDocShell::GetOriginAttributes(JSContext* aCx,
+ JS::MutableHandle<JS::Value> aVal) {
+ return mBrowsingContext->GetScriptableOriginAttributes(aCx, aVal);
+}
+
+bool nsDocShell::ServiceWorkerAllowedToControlWindow(nsIPrincipal* aPrincipal,
+ nsIURI* aURI) {
+ MOZ_ASSERT(aPrincipal);
+ MOZ_ASSERT(aURI);
+
+ if (UsePrivateBrowsing() || mBrowsingContext->GetSandboxFlags()) {
+ return false;
+ }
+
+ nsCOMPtr<nsIDocShellTreeItem> parent;
+ GetInProcessSameTypeParent(getter_AddRefs(parent));
+ nsPIDOMWindowOuter* parentOuter = parent ? parent->GetWindow() : nullptr;
+ nsPIDOMWindowInner* parentInner =
+ parentOuter ? parentOuter->GetCurrentInnerWindow() : nullptr;
+
+ StorageAccess storage =
+ StorageAllowedForNewWindow(aPrincipal, aURI, parentInner);
+
+ // If the partitioned service worker is enabled, service worker is allowed to
+ // control the window if partition is enabled.
+ if (StaticPrefs::privacy_partition_serviceWorkers() && parentInner) {
+ RefPtr<Document> doc = parentInner->GetExtantDoc();
+
+ if (doc && StoragePartitioningEnabled(storage, doc->CookieJarSettings())) {
+ return true;
+ }
+ }
+
+ return storage == StorageAccess::eAllow;
+}
+
+nsresult nsDocShell::SetOriginAttributes(const OriginAttributes& aAttrs) {
+ MOZ_ASSERT(!mIsBeingDestroyed);
+ return mBrowsingContext->SetOriginAttributes(aAttrs);
+}
+
+NS_IMETHODIMP
+nsDocShell::ResumeRedirectedLoad(uint64_t aIdentifier, int32_t aHistoryIndex) {
+ RefPtr<nsDocShell> self = this;
+ RefPtr<ChildProcessChannelListener> cpcl =
+ ChildProcessChannelListener::GetSingleton();
+
+ // Call into InternalLoad with the pending channel when it is received.
+ cpcl->RegisterCallback(
+ aIdentifier, [self, aHistoryIndex](
+ nsDocShellLoadState* aLoadState,
+ nsTArray<Endpoint<extensions::PStreamFilterParent>>&&
+ aStreamFilterEndpoints,
+ nsDOMNavigationTiming* aTiming) {
+ MOZ_ASSERT(aLoadState->GetPendingRedirectedChannel());
+ if (NS_WARN_IF(self->mIsBeingDestroyed)) {
+ aLoadState->GetPendingRedirectedChannel()->CancelWithReason(
+ NS_BINDING_ABORTED, "nsDocShell::mIsBeingDestroyed"_ns);
+ return NS_BINDING_ABORTED;
+ }
+
+ self->mLoadType = aLoadState->LoadType();
+ nsCOMPtr<nsIURI> previousURI;
+ uint32_t previousFlags = 0;
+ ExtractLastVisit(aLoadState->GetPendingRedirectedChannel(),
+ getter_AddRefs(previousURI), &previousFlags);
+ self->SaveLastVisit(aLoadState->GetPendingRedirectedChannel(),
+ previousURI, previousFlags);
+
+ if (aTiming) {
+ self->mTiming = new nsDOMNavigationTiming(self, aTiming);
+ self->mBlankTiming = false;
+ }
+
+ // If we're performing a history load, locate the correct history entry,
+ // and set the relevant bits on our loadState.
+ if (aHistoryIndex >= 0 && self->GetSessionHistory() &&
+ !mozilla::SessionHistoryInParent()) {
+ nsCOMPtr<nsISHistory> legacySHistory =
+ self->GetSessionHistory()->LegacySHistory();
+
+ nsCOMPtr<nsISHEntry> entry;
+ nsresult rv = legacySHistory->GetEntryAtIndex(aHistoryIndex,
+ getter_AddRefs(entry));
+ if (NS_SUCCEEDED(rv)) {
+ legacySHistory->InternalSetRequestedIndex(aHistoryIndex);
+ aLoadState->SetLoadType(LOAD_HISTORY);
+ aLoadState->SetSHEntry(entry);
+ }
+ }
+
+ self->InternalLoad(aLoadState);
+
+ if (aLoadState->GetOriginalURIString().isSome()) {
+ // Save URI string in case it's needed later when
+ // sending to search engine service in EndPageLoad()
+ self->mOriginalUriString = *aLoadState->GetOriginalURIString();
+ }
+
+ for (auto& endpoint : aStreamFilterEndpoints) {
+ extensions::StreamFilterParent::Attach(
+ aLoadState->GetPendingRedirectedChannel(), std::move(endpoint));
+ }
+
+ // If the channel isn't pending, then it means that InternalLoad
+ // never connected it, and we shouldn't try to continue. This
+ // can happen even if InternalLoad returned NS_OK.
+ bool pending = false;
+ aLoadState->GetPendingRedirectedChannel()->IsPending(&pending);
+ NS_ASSERTION(pending, "We should have connected the pending channel!");
+ if (!pending) {
+ return NS_BINDING_ABORTED;
+ }
+ return NS_OK;
+ });
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::SetOriginAttributes(JS::Handle<JS::Value> aOriginAttributes,
+ JSContext* aCx) {
+ OriginAttributes attrs;
+ if (!aOriginAttributes.isObject() || !attrs.Init(aCx, aOriginAttributes)) {
+ return NS_ERROR_INVALID_ARG;
+ }
+
+ return SetOriginAttributes(attrs);
+}
+
+NS_IMETHODIMP
+nsDocShell::GetAsyncPanZoomEnabled(bool* aOut) {
+ if (PresShell* presShell = GetPresShell()) {
+ *aOut = presShell->AsyncPanZoomEnabled();
+ return NS_OK;
+ }
+
+ // If we don't have a presShell, fall back to the default platform value of
+ // whether or not APZ is enabled.
+ *aOut = gfxPlatform::AsyncPanZoomEnabled();
+ return NS_OK;
+}
+
+bool nsDocShell::HasUnloadedParent() {
+ for (WindowContext* wc = GetBrowsingContext()->GetParentWindowContext(); wc;
+ wc = wc->GetParentWindowContext()) {
+ if (!wc->IsCurrent() || wc->IsDiscarded() ||
+ wc->GetBrowsingContext()->IsDiscarded()) {
+ // If a parent is OOP and the parent WindowContext is no
+ // longer current, we can assume the parent was unloaded.
+ return true;
+ }
+
+ if (wc->GetBrowsingContext()->IsInProcess() &&
+ (!wc->GetBrowsingContext()->GetDocShell() ||
+ wc->GetBrowsingContext()->GetDocShell()->GetIsInUnload())) {
+ return true;
+ }
+ }
+ return false;
+}
+
+/* static */
+bool nsDocShell::ShouldUpdateGlobalHistory(uint32_t aLoadType) {
+ return !(aLoadType == LOAD_BYPASS_HISTORY || aLoadType == LOAD_ERROR_PAGE ||
+ aLoadType & LOAD_CMD_HISTORY);
+}
+
+void nsDocShell::UpdateGlobalHistoryTitle(nsIURI* aURI) {
+ if (!mBrowsingContext->GetUseGlobalHistory() || UsePrivateBrowsing()) {
+ return;
+ }
+
+ // Global history is interested into sub-frame visits only for link-coloring
+ // purposes, thus title updates are skipped for those.
+ //
+ // Moreover, some iframe documents (such as the ones created via
+ // document.open()) inherit the document uri of the caller, which would cause
+ // us to override a previously set page title with one from the subframe.
+ if (IsSubframe()) {
+ return;
+ }
+
+ if (nsCOMPtr<IHistory> history = components::History::Service()) {
+ history->SetURITitle(aURI, mTitle);
+ }
+}
+
+bool nsDocShell::IsInvisible() { return mInvisible; }
+
+void nsDocShell::SetInvisible(bool aInvisible) { mInvisible = aInvisible; }
+
+// The caller owns |aAsyncCause| here.
+void nsDocShell::NotifyJSRunToCompletionStart(const char* aReason,
+ const nsAString& aFunctionName,
+ const nsAString& aFilename,
+ const uint32_t aLineNumber,
+ JS::Handle<JS::Value> aAsyncStack,
+ const char* aAsyncCause) {
+ // If first start, mark interval start.
+ if (mJSRunToCompletionDepth == 0 && TimelineConsumers::HasConsumer(this)) {
+ TimelineConsumers::AddMarkerForDocShell(
+ this, mozilla::MakeUnique<JavascriptTimelineMarker>(
+ aReason, aFunctionName, aFilename, aLineNumber,
+ MarkerTracingType::START, aAsyncStack, aAsyncCause));
+ }
+
+ mJSRunToCompletionDepth++;
+}
+
+void nsDocShell::NotifyJSRunToCompletionStop() {
+ mJSRunToCompletionDepth--;
+
+ // If last stop, mark interval end.
+ if (mJSRunToCompletionDepth == 0 && TimelineConsumers::HasConsumer(this)) {
+ TimelineConsumers::AddMarkerForDocShell(this, "Javascript",
+ MarkerTracingType::END);
+ }
+}
+
+/* static */
+void nsDocShell::MaybeNotifyKeywordSearchLoading(const nsString& aProvider,
+ const nsString& aKeyword) {
+ if (aProvider.IsEmpty()) {
+ return;
+ }
+ nsresult rv;
+ nsCOMPtr<nsISupportsString> isupportsString =
+ do_CreateInstance(NS_SUPPORTS_STRING_CONTRACTID, &rv);
+ NS_ENSURE_SUCCESS_VOID(rv);
+
+ rv = isupportsString->SetData(aProvider);
+ NS_ENSURE_SUCCESS_VOID(rv);
+
+ nsCOMPtr<nsIObserverService> obsSvc = services::GetObserverService();
+ if (obsSvc) {
+ // Note that "keyword-search" refers to a search via the url
+ // bar, not a bookmarks keyword search.
+ obsSvc->NotifyObservers(isupportsString, "keyword-search", aKeyword.get());
+ }
+}
+
+NS_IMETHODIMP
+nsDocShell::ShouldPrepareForIntercept(nsIURI* aURI, nsIChannel* aChannel,
+ bool* aShouldIntercept) {
+ return mInterceptController->ShouldPrepareForIntercept(aURI, aChannel,
+ aShouldIntercept);
+}
+
+NS_IMETHODIMP
+nsDocShell::ChannelIntercepted(nsIInterceptedChannel* aChannel) {
+ return mInterceptController->ChannelIntercepted(aChannel);
+}
+
+bool nsDocShell::InFrameSwap() {
+ RefPtr<nsDocShell> shell = this;
+ do {
+ if (shell->mInFrameSwap) {
+ return true;
+ }
+ shell = shell->GetInProcessParentDocshell();
+ } while (shell);
+ return false;
+}
+
+UniquePtr<ClientSource> nsDocShell::TakeInitialClientSource() {
+ return std::move(mInitialClientSource);
+}
+
+NS_IMETHODIMP
+nsDocShell::GetEditingSession(nsIEditingSession** aEditSession) {
+ if (!NS_SUCCEEDED(EnsureEditorData())) {
+ return NS_ERROR_FAILURE;
+ }
+
+ *aEditSession = do_AddRef(mEditorData->GetEditingSession()).take();
+ return *aEditSession ? NS_OK : NS_ERROR_FAILURE;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetScriptableBrowserChild(nsIBrowserChild** aBrowserChild) {
+ *aBrowserChild = GetBrowserChild().take();
+ return *aBrowserChild ? NS_OK : NS_ERROR_FAILURE;
+}
+
+already_AddRefed<nsIBrowserChild> nsDocShell::GetBrowserChild() {
+ nsCOMPtr<nsIBrowserChild> tc = do_QueryReferent(mBrowserChild);
+ return tc.forget();
+}
+
+nsCommandManager* nsDocShell::GetCommandManager() {
+ NS_ENSURE_SUCCESS(EnsureCommandHandler(), nullptr);
+ return mCommandManager;
+}
+
+NS_IMETHODIMP_(void)
+nsDocShell::GetOriginAttributes(mozilla::OriginAttributes& aAttrs) {
+ mBrowsingContext->GetOriginAttributes(aAttrs);
+}
+
+HTMLEditor* nsIDocShell::GetHTMLEditor() {
+ nsDocShell* docShell = static_cast<nsDocShell*>(this);
+ return docShell->GetHTMLEditorInternal();
+}
+
+nsresult nsIDocShell::SetHTMLEditor(HTMLEditor* aHTMLEditor) {
+ nsDocShell* docShell = static_cast<nsDocShell*>(this);
+ return docShell->SetHTMLEditorInternal(aHTMLEditor);
+}
+
+#define MATRIX_LENGTH 20
+
+NS_IMETHODIMP
+nsDocShell::SetColorMatrix(const nsTArray<float>& aMatrix) {
+ if (aMatrix.Length() == MATRIX_LENGTH) {
+ mColorMatrix.reset(new gfx::Matrix5x4());
+ static_assert(
+ MATRIX_LENGTH * sizeof(float) == sizeof(mColorMatrix->components),
+ "Size mismatch for our memcpy");
+ memcpy(mColorMatrix->components, aMatrix.Elements(),
+ sizeof(mColorMatrix->components));
+ } else if (aMatrix.Length() == 0) {
+ mColorMatrix.reset();
+ } else {
+ return NS_ERROR_INVALID_ARG;
+ }
+
+ PresShell* presShell = GetPresShell();
+ if (!presShell) {
+ return NS_ERROR_FAILURE;
+ }
+
+ nsIFrame* frame = presShell->GetRootFrame();
+ if (!frame) {
+ return NS_ERROR_FAILURE;
+ }
+
+ frame->SchedulePaint();
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocShell::GetColorMatrix(nsTArray<float>& aMatrix) {
+ if (mColorMatrix) {
+ aMatrix.SetLength(MATRIX_LENGTH);
+ static_assert(
+ MATRIX_LENGTH * sizeof(float) == sizeof(mColorMatrix->components),
+ "Size mismatch for our memcpy");
+ memcpy(aMatrix.Elements(), mColorMatrix->components,
+ MATRIX_LENGTH * sizeof(float));
+ }
+
+ return NS_OK;
+}
+
+#undef MATRIX_LENGTH
+
+NS_IMETHODIMP
+nsDocShell::GetIsForceReloading(bool* aForceReload) {
+ *aForceReload = IsForceReloading();
+ return NS_OK;
+}
+
+bool nsDocShell::IsForceReloading() { return IsForceReloadType(mLoadType); }
+
+NS_IMETHODIMP
+nsDocShell::GetBrowsingContextXPCOM(BrowsingContext** aBrowsingContext) {
+ *aBrowsingContext = do_AddRef(mBrowsingContext).take();
+ return NS_OK;
+}
+
+BrowsingContext* nsDocShell::GetBrowsingContext() { return mBrowsingContext; }
+
+bool nsDocShell::GetIsAttemptingToNavigate() {
+ // XXXbz the document.open spec says to abort even if there's just a
+ // queued navigation task, sort of. It's not clear whether browsers
+ // actually do that, and we didn't use to do it, so for now let's
+ // not do that.
+ // https://github.com/whatwg/html/issues/3447 tracks the spec side of this.
+ if (mDocumentRequest) {
+ // There's definitely a navigation in progress.
+ return true;
+ }
+
+ // javascript: channels have slightly weird behavior: they're LOAD_BACKGROUND
+ // until the script runs, which means they're not sending loadgroup
+ // notifications and hence not getting set as mDocumentRequest. Look through
+ // our loadgroup for document-level javascript: loads.
+ if (!mLoadGroup) {
+ return false;
+ }
+
+ nsCOMPtr<nsISimpleEnumerator> requests;
+ mLoadGroup->GetRequests(getter_AddRefs(requests));
+ bool hasMore = false;
+ while (NS_SUCCEEDED(requests->HasMoreElements(&hasMore)) && hasMore) {
+ nsCOMPtr<nsISupports> elem;
+ requests->GetNext(getter_AddRefs(elem));
+ nsCOMPtr<nsIScriptChannel> scriptChannel(do_QueryInterface(elem));
+ if (!scriptChannel) {
+ continue;
+ }
+
+ if (scriptChannel->GetIsDocumentLoad()) {
+ // This is a javascript: load that might lead to a new document,
+ // hence a navigation.
+ return true;
+ }
+ }
+
+ return mCheckingSessionHistory;
+}
+
+void nsDocShell::SetLoadingSessionHistoryInfo(
+ const mozilla::dom::LoadingSessionHistoryInfo& aLoadingInfo,
+ bool aNeedToReportActiveAfterLoadingBecomesActive) {
+ // FIXME Would like to assert this, but can't yet.
+ // MOZ_ASSERT(!mLoadingEntry);
+ MOZ_LOG(gSHLog, LogLevel::Debug,
+ ("Setting the loading entry on nsDocShell %p to %s", this,
+ aLoadingInfo.mInfo.GetURI()->GetSpecOrDefault().get()));
+ mLoadingEntry = MakeUnique<LoadingSessionHistoryInfo>(aLoadingInfo);
+ mNeedToReportActiveAfterLoadingBecomesActive =
+ aNeedToReportActiveAfterLoadingBecomesActive;
+}
+
+void nsDocShell::MoveLoadingToActiveEntry(bool aPersist, bool aExpired,
+ uint32_t aCacheKey,
+ nsIURI* aPreviousURI) {
+ MOZ_ASSERT(mozilla::SessionHistoryInParent());
+
+ MOZ_LOG(gSHLog, LogLevel::Debug,
+ ("nsDocShell %p MoveLoadingToActiveEntry", this));
+
+ UniquePtr<SessionHistoryInfo> previousActiveEntry(mActiveEntry.release());
+ mozilla::UniquePtr<mozilla::dom::LoadingSessionHistoryInfo> loadingEntry;
+ mActiveEntryIsLoadingFromSessionHistory =
+ mLoadingEntry && mLoadingEntry->mLoadIsFromSessionHistory;
+ if (mLoadingEntry) {
+ MOZ_LOG(gSHLog, LogLevel::Debug,
+ ("Moving the loading entry to the active entry on nsDocShell %p "
+ "to %s",
+ this, mLoadingEntry->mInfo.GetURI()->GetSpecOrDefault().get()));
+ mActiveEntry = MakeUnique<SessionHistoryInfo>(mLoadingEntry->mInfo);
+ mLoadingEntry.swap(loadingEntry);
+ if (!mActiveEntryIsLoadingFromSessionHistory) {
+ if (mNeedToReportActiveAfterLoadingBecomesActive) {
+ // Needed to pass various history length WPTs.
+ mBrowsingContext->SetActiveSessionHistoryEntry(
+ mozilla::Nothing(), mActiveEntry.get(), mLoadType,
+ /* aUpdatedCacheKey = */ 0, false);
+ }
+ mBrowsingContext->IncrementHistoryEntryCountForBrowsingContext();
+ }
+ }
+ mNeedToReportActiveAfterLoadingBecomesActive = false;
+
+ if (mActiveEntry) {
+ if (aCacheKey != 0) {
+ mActiveEntry->SetCacheKey(aCacheKey);
+ }
+ MOZ_ASSERT(loadingEntry);
+ uint32_t loadType =
+ mLoadType == LOAD_ERROR_PAGE ? mFailedLoadType : mLoadType;
+
+ if (loadingEntry->mLoadId != UINT64_MAX) {
+ // We're passing in mCurrentURI, which could be null. SessionHistoryCommit
+ // does require a non-null uri if this is for a refresh load of the same
+ // URI, but in that case mCurrentURI won't be null here.
+ mBrowsingContext->SessionHistoryCommit(
+ *loadingEntry, loadType, aPreviousURI, previousActiveEntry.get(),
+ aPersist, false, aExpired, aCacheKey);
+ }
+ }
+}
+
+static bool IsFaviconLoad(nsIRequest* aRequest) {
+ nsCOMPtr<nsIChannel> channel = do_QueryInterface(aRequest);
+ if (!channel) {
+ return false;
+ }
+
+ nsCOMPtr<nsILoadInfo> li = channel->LoadInfo();
+ return li && li->InternalContentPolicyType() ==
+ nsIContentPolicy::TYPE_INTERNAL_IMAGE_FAVICON;
+}
+
+void nsDocShell::RecordSingleChannelId(bool aStartRequest,
+ nsIRequest* aRequest) {
+ // Ignore favicon loads, they don't need to block caching.
+ if (IsFaviconLoad(aRequest)) {
+ return;
+ }
+
+ MOZ_ASSERT_IF(!aStartRequest, mRequestForBlockingFromBFCacheCount > 0);
+
+ mRequestForBlockingFromBFCacheCount += aStartRequest ? 1 : -1;
+
+ if (mBrowsingContext->GetCurrentWindowContext()) {
+ // We have three states: no request, one request with an id and
+ // eiher one request without an id or multiple requests. Nothing() is no
+ // request, Some(non-zero) is one request with an id and Some(0) is one
+ // request without an id or multiple requests.
+ Maybe<uint64_t> singleChannelId;
+ if (mRequestForBlockingFromBFCacheCount > 1) {
+ singleChannelId = Some(0);
+ } else if (mRequestForBlockingFromBFCacheCount == 1) {
+ nsCOMPtr<nsIIdentChannel> identChannel;
+ if (aStartRequest) {
+ identChannel = do_QueryInterface(aRequest);
+ } else {
+ // aChannel is the channel that's being removed, but we need to check if
+ // the remaining channel in the loadgroup has an id.
+ nsCOMPtr<nsISimpleEnumerator> requests;
+ mLoadGroup->GetRequests(getter_AddRefs(requests));
+ for (const auto& request : SimpleEnumerator<nsIRequest>(requests)) {
+ if (!IsFaviconLoad(request) &&
+ !!(identChannel = do_QueryInterface(request))) {
+ break;
+ }
+ }
+ }
+
+ if (identChannel) {
+ singleChannelId = Some(identChannel->ChannelId());
+ } else {
+ singleChannelId = Some(0);
+ }
+ } else {
+ MOZ_ASSERT(mRequestForBlockingFromBFCacheCount == 0);
+ singleChannelId = Nothing();
+ }
+
+ if (MOZ_UNLIKELY(MOZ_LOG_TEST(gSHIPBFCacheLog, LogLevel::Verbose))) {
+ nsAutoCString uri("[no uri]");
+ if (mCurrentURI) {
+ uri = mCurrentURI->GetSpecOrDefault();
+ }
+ if (singleChannelId.isNothing()) {
+ MOZ_LOG(gSHIPBFCacheLog, LogLevel::Verbose,
+ ("Loadgroup for %s doesn't have any requests relevant for "
+ "blocking BFCache",
+ uri.get()));
+ } else if (singleChannelId.value() == 0) {
+ MOZ_LOG(gSHIPBFCacheLog, LogLevel::Verbose,
+ ("Loadgroup for %s has multiple requests relevant for blocking "
+ "BFCache",
+ uri.get()));
+ } else {
+ MOZ_LOG(gSHIPBFCacheLog, LogLevel::Verbose,
+ ("Loadgroup for %s has one request with id %" PRIu64
+ " relevant for blocking BFCache",
+ uri.get(), singleChannelId.value()));
+ }
+ }
+
+ if (mSingleChannelId != singleChannelId) {
+ mSingleChannelId = singleChannelId;
+ WindowGlobalChild* wgc =
+ mBrowsingContext->GetCurrentWindowContext()->GetWindowGlobalChild();
+ if (wgc) {
+ wgc->SendSetSingleChannelId(singleChannelId);
+ }
+ }
+ }
+}
+
+NS_IMETHODIMP
+nsDocShell::OnStartRequest(nsIRequest* aRequest) {
+ if (MOZ_UNLIKELY(MOZ_LOG_TEST(gSHIPBFCacheLog, LogLevel::Verbose))) {
+ nsAutoCString uri("[no uri]");
+ if (mCurrentURI) {
+ uri = mCurrentURI->GetSpecOrDefault();
+ }
+ nsAutoCString name;
+ aRequest->GetName(name);
+ MOZ_LOG(gSHIPBFCacheLog, LogLevel::Verbose,
+ ("Adding request %s to loadgroup for %s", name.get(), uri.get()));
+ }
+ RecordSingleChannelId(true, aRequest);
+ return nsDocLoader::OnStartRequest(aRequest);
+}
+
+NS_IMETHODIMP
+nsDocShell::OnStopRequest(nsIRequest* aRequest, nsresult aStatusCode) {
+ if (MOZ_UNLIKELY(MOZ_LOG_TEST(gSHIPBFCacheLog, LogLevel::Verbose))) {
+ nsAutoCString uri("[no uri]");
+ if (mCurrentURI) {
+ uri = mCurrentURI->GetSpecOrDefault();
+ }
+ nsAutoCString name;
+ aRequest->GetName(name);
+ MOZ_LOG(
+ gSHIPBFCacheLog, LogLevel::Verbose,
+ ("Removing request %s from loadgroup for %s", name.get(), uri.get()));
+ }
+ RecordSingleChannelId(false, aRequest);
+ return nsDocLoader::OnStopRequest(aRequest, aStatusCode);
+}
+
+void nsDocShell::MaybeDisconnectChildListenersOnPageHide() {
+ MOZ_RELEASE_ASSERT(XRE_IsContentProcess());
+
+ if (mChannelToDisconnectOnPageHide != 0 && mLoadGroup) {
+ nsCOMPtr<nsISimpleEnumerator> requests;
+ mLoadGroup->GetRequests(getter_AddRefs(requests));
+ for (const auto& request : SimpleEnumerator<nsIRequest>(requests)) {
+ RefPtr<DocumentChannel> channel = do_QueryObject(request);
+ if (channel && channel->ChannelId() == mChannelToDisconnectOnPageHide) {
+ static_cast<DocumentChannelChild*>(channel.get())
+ ->DisconnectChildListeners(NS_BINDING_ABORTED, NS_BINDING_ABORTED);
+ }
+ }
+ mChannelToDisconnectOnPageHide = 0;
+ }
+}