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gecko-dev
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gecko-dev/docshell/base/nsDocShell.cpp

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "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/Tuple.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 "nsIAppShell.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
// Hint for native dispatch of events on how long to delay after
// all documents have loaded in milliseconds before favoring normal
// native event dispatch priorites over performance
// Can be overridden with docshell.event_starvation_delay_hint pref.
#define NS_EVENT_STARVATION_DELAY_HINT 2000
static NS_DEFINE_CID(kAppShellCID, NS_APPSHELL_CID);
// Number of documents currently loading
static int32_t gNumberOfDocumentsLoading = 0;
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 void FavorPerformanceHint(bool aPerfOverStarvation) {
nsCOMPtr<nsIAppShell> appShell = do_GetService(kAppShellCID);
if (appShell) {
appShell->FavorPerformanceHint(
aPerfOverStarvation,
Preferences::GetUint("docshell.event_starvation_delay_hint",
NS_EVENT_STARVATION_DELAY_HINT));
}
}
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),
mIsAppTab(false),
mDeviceSizeIsPageSize(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),
mSuspendMediaWhenInactive(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);
mDeviceSizeIsPageSize = Preferences::GetBool(
"docshell.device_size_is_page_size", mDeviceSizeIsPageSize);
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()) {
return LoadHistoryEntry(aLoadState->SHEntry(), 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::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);
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;
}
//
// Bug 13871: Prevent frameset spoofing
//
// This routine answers: 'Is origin's document from same domain as
// target's document?'
//
// file: uris are considered the same domain for the purpose of
// frame navigation regardless of script accessibility (bug 420425)
//
/* static */
bool nsDocShell::ValidateOrigin(BrowsingContext* aOrigin,
BrowsingContext* aTarget) {
nsIDocShell* originDocShell = aOrigin->GetDocShell();
MOZ_ASSERT(originDocShell, "originDocShell must not be null");
Document* originDocument = originDocShell->GetDocument();
NS_ENSURE_TRUE(originDocument, false);
nsIDocShell* targetDocShell = aTarget->GetDocShell();
MOZ_ASSERT(targetDocShell, "targetDocShell must not be null");
Document* targetDocument = targetDocShell->GetDocument();
NS_ENSURE_TRUE(targetDocument, false);
bool equal;
nsresult rv = originDocument->NodePrincipal()->Equals(
targetDocument->NodePrincipal(), &equal);
if (NS_SUCCEEDED(rv) && equal) {
return true;
}
// Not strictly equal, special case if both are file: uris
nsCOMPtr<nsIURI> originURI;
nsCOMPtr<nsIURI> targetURI;
nsCOMPtr<nsIURI> innerOriginURI;
nsCOMPtr<nsIURI> innerTargetURI;
// Casting to BasePrincipal, as we can't get InnerMost URI otherwise
auto* originDocumentBasePrincipal =
BasePrincipal::Cast(originDocument->NodePrincipal());
rv = originDocumentBasePrincipal->GetURI(getter_AddRefs(originURI));
if (NS_SUCCEEDED(rv) && originURI) {
innerOriginURI = NS_GetInnermostURI(originURI);
}
auto* targetDocumentBasePrincipal =
BasePrincipal::Cast(targetDocument->NodePrincipal());
rv = targetDocumentBasePrincipal->GetURI(getter_AddRefs(targetURI));
if (NS_SUCCEEDED(rv) && targetURI) {
innerTargetURI = NS_GetInnermostURI(targetURI);
}
return innerOriginURI && innerTargetURI && SchemeIsFile(innerOriginURI) &&
SchemeIsFile(innerTargetURI);
}
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;
}
RefPtr<TimelineConsumers> timelines = TimelineConsumers::Get();
if (!timelines) {
return NS_OK;
}
if (aValue) {
MOZ_ASSERT(!timelines->HasConsumer(this));
timelines->AddConsumer(this);
MOZ_ASSERT(timelines->HasConsumer(this));
UseEntryScriptProfiling();
} else {
MOZ_ASSERT(timelines->HasConsumer(this));
timelines->RemoveConsumer(this);
MOZ_ASSERT(!timelines->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) {
RefPtr<TimelineConsumers> timelines = TimelineConsumers::Get();
if (!timelines) {
return NS_OK;
}
nsTArray<dom::ProfileTimelineMarker> store;
SequenceRooter<dom::ProfileTimelineMarker> rooter(aCx, &store);
timelines->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);
}
// Inform windows when they're being removed from their parent.
if (!aParent) {
MaybeClearStorageAccessFlag();
}
return NS_OK;
}
void nsDocShell::MaybeClearStorageAccessFlag() {
if (mScriptGlobal) {
// Tell our window that the parent has now changed.
mScriptGlobal->ParentWindowChanged();
// Tell all of our children about the change recursively as well.
for (auto* childDocLoader : mChildList.ForwardRange()) {
nsCOMPtr<nsIDocShell> child = do_QueryObject(childDocLoader);
if (child) {
static_cast<nsDocShell*>(child.get())->MaybeClearStorageAccessFlag();
}
}
}
}
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;
}
NS_IMETHODIMP
nsDocShell::SetDeviceSizeIsPageSize(bool aValue) {
if (mDeviceSizeIsPageSize != aValue) {
mDeviceSizeIsPageSize = aValue;
RefPtr<nsPresContext> presContext = GetPresContext();
if (presContext) {
presContext->MediaFeatureValuesChanged(
{MediaFeatureChangeReason::DeviceSizeIsPageSizeChange},
MediaFeatureChangePropagation::JustThisDocument);
}
}
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::GetDeviceSizeIsPageSize(bool* aValue) {
*aValue = mDeviceSizeIsPageSize;
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(const nsAString& 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));
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(aURI).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(aURI).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::LoadURIFromScript(const nsAString& 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);
}
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;
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<nsISupports> securityInfo;
nsCOMPtr<nsITransportSecurityInfo> tsi;
if (aFailedChannel) {
aFailedChannel->GetSecurityInfo(getter_AddRefs(securityInfo));
}
tsi = do_QueryInterface(securityInfo);
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, nullptr, nullptr, &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) {
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;
}
}
// If the HTTPS-Only Mode upgraded this request and the upgrade might have
// caused this error, we replace the error-page with about:httpsonlyerror
bool isHttpsOnlyError =
nsHTTPSOnlyUtils::CouldBeHttpsOnlyError(aFailedChannel, aError);
if (isHttpsOnlyError) {
errorPage.AssignLiteral("httpsonlyerror");
}
if (nsCOMPtr<nsILoadURIDelegate> loadURIDelegate = GetLoadURIDelegate()) {
nsCOMPtr<nsIURI> errorPageURI;
rv = loadURIDelegate->HandleLoadError(
aURI, (isHttpsOnlyError ? NS_ERROR_HTTPS_ONLY : aError),
NS_ERROR_GET_MODULE(aError), 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) {
MOZ_ASSERT(!mIsBeingDestroyed);
#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");
}
// netError.xhtml's getDescription only handles the "d" parameter at the
// end of the URL, so append it last.
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()) {
RefPtr<nsDocShell> docShell(this);
nsCOMPtr<nsIContentViewer> cv(mContentViewer);
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);
ContentChild::GetSingleton()->SendNotifyOnHistoryReload(
mBrowsingContext, forceReload,
[docShell, doc, loadType, browsingContext, currentURI, referrerInfo](
Tuple<bool, Maybe<RefPtr<nsDocShellLoadState>>, Maybe<bool>>&&
aResult) {
bool canReload;
Maybe<RefPtr<nsDocShellLoadState>> loadState;
Maybe<bool> reloadingActiveEntry;
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<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));
ReloadDocument(this, GetDocument(), loadType, mBrowsingContext,
mCurrentURI, mReferrerInfo);
}
}
}
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) {
return LoadHistoryEntry(
mOSHE, loadType,
aReloadFlags & nsIWebNavigation::LOAD_FLAGS_USER_ACTIVATION);
}
if (mLSHE) { // In case a reload happened before the current load is done
return LoadHistoryEntry(
mLSHE, loadType,
aReloadFlags & nsIWebNavigation::LOAD_FLAGS_USER_ACTIVATION);
}
return ReloadDocument(this, GetDocument(), loadType, mBrowsingContext,
mCurrentURI, mReferrerInfo);
}
/* 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;
}
NS_IMETHODIMP
nsDocShell::GetUnscaledDevicePixelsPerCSSPixel(double* aScale) {
if (mParentWidget) {
*aScale = mParentWidget->GetDefaultScale().scale;
return NS_OK;
}
nsCOMPtr<nsIBaseWindow> ownerWindow(do_QueryInterface(mTreeOwner));
if (ownerWindow) {
return ownerWindow->GetUnscaledDevicePixelsPerCSSPixel(aScale);
}
*aScale = 1.0;
return NS_OK;
}
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::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() == nsViewVisibility_kHide) {
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.
return treeOwnerAsWin->GetVisibility(aVisibility);
}
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::SetIsAppTab(bool aIsAppTab) {
mIsAppTab = aIsAppTab;
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::GetIsAppTab(bool* aIsAppTab) {
*aIsAppTab = mIsAppTab;
return NS_OK;
}
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::StyleChange,
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 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 MakeTuple(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 MakeTuple(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 MakeTuple(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 MakeTuple(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.
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) {
// 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);
}
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 constexpr (SessionStoreUtils::NATIVE_LISTENER) {
if (IsForceReloadType(mLoadType)) {
if (WindowContext* windowContext =
mBrowsingContext->GetCurrentWindowContext()) {
SessionStoreChild::From(windowContext->GetWindowGlobalChild())
->SendResetSessionStore(
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<nsISupports> securityInfo;
rv = aChannel->GetSecurityInfo(getter_AddRefs(securityInfo));
if (NS_WARN_IF(NS_FAILED(rv))) {
return nullptr;
}
nsCOMPtr<nsITransportSecurityInfo> tsi = do_QueryInterface(securityInfo);
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;
// If all documents have completed their loading
// favor native event dispatch priorities
// over performance
if (--gNumberOfDocumentsLoading == 0) {
// Hint to use normal native event dispatch priorities
FavorPerformanceHint(false);
}
}
/* 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 constexpr (SessionStoreUtils::NATIVE_LISTENER) {
if (WindowContext* windowContext =
mBrowsingContext->GetCurrentWindowContext()) {
// TODO(farre): File bug: From a user perspective this would probably be
// just fine to run off the change listener timer. Turns out that a flush
// is needed. Several tests depend on this behaviour. Could potentially be
// an optimization for later. See Bug 1756995.
SessionStoreChangeListener::FlushAllSessionStoreData(windowContext);
}
}
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::CreateWithInheritedAttributes(this);
}
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);
// 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);
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;
// Tell the event loop to favor plevents over user events, see comments
// in CreateContentViewer.
if (++gNumberOfDocumentsLoading == 1) {
FavorPerformanceHint(true);
}
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));
}
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",
prinURI->GetSpecOrDefault().get());
PROFILER_MARKER_TEXT("Background Iframe", DOM, {}, marker);
}
SetBackgroundLoadIframe();
}
}
}
NS_ENSURE_SUCCESS(Embed(viewer, nullptr, false,
ShouldAddToSessionHistory(finalURI, aOpenedChannel),
aOpenedChannel),
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);
}
}
}
// Give hint to native plevent dispatch mechanism. If a document
// is loading the native plevent dispatch mechanism should favor
// performance over normal native event dispatch priorities.
if (++gNumberOfDocumentsLoading == 1) {
// Hint to favor performance for the plevent notification mechanism.
// We want the pages to load as fast as possible even if its means
// native messages might be starved.
FavorPerformanceHint(true);
}
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")) {
targetContext = mBrowsingContext->FindWithName(
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->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) {
nsCOMPtr<nsIChannel> docChannel = GetCurrentDocChannel();
if (docChannel) {
nsCOMPtr<nsILoadInfo> docLoadInfo = docChannel->LoadInfo();
if (!docLoadInfo->GetLoadErrorPage()) {
if (nsHTTPSOnlyUtils::IsEqualURIExceptSchemeAndRef(
currentExposableURI, aLoadState->URI(), docLoadInfo)) {
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);
}
}
#ifdef DEBUG
if (aState.mHistoryNavBetweenSameDoc) {
nsCOMPtr<nsIInputStream> currentPostData;
if (mozilla::SessionHistoryInParent()) {
currentPostData = mActiveEntry->GetPostData();
} else {
currentPostData = mOSHE->GetPostData();
}
NS_ASSERTION(currentPostData == aLoadState->PostDataStream(),
"Different POST data for entries for the same page?");
}
#endif
// 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;
// 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(aLoadState->URI());
/* 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(aLoadState->URI());
// 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(aLoadState->URI(), 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()));
bool hadActiveEntry = !!mActiveEntry;
nsCOMPtr<nsILayoutHistoryState> currentLayoutHistoryState;
if (mActiveEntry) {
currentLayoutHistoryState = mActiveEntry->GetLayoutHistoryState();
}
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, hadActiveEntry, 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,
aLoadState->URI()->GetSpecOrDefault().get()));
if (mActiveEntry) {
mActiveEntry =
MakeUnique<SessionHistoryInfo>(*mActiveEntry, aLoadState->URI());
} else {
mActiveEntry = MakeUnique<SessionHistoryInfo>(
aLoadState->URI(), 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, aLoadState->URI(), 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(aLoadState->URI());
SetDocCurrentStateObj(mOSHE, mActiveEntry.get());
// Inform the favicon service that the favicon for oldURI also
// applies to aLoadState->URI().
CopyFavicon(currentURI, aLoadState->URI(), 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, aLoadState->URI());
}
}
return NS_OK;
}
static bool NavigationShouldTakeFocus(nsDocShell* aDocShell,
nsDocShellLoadState* aLoadState) {
if (!aLoadState->AllowFocusMove()) {
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;
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();
if (DisplayLoadError(rv, aLoadState->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();
}
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);
}
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);
}
/* 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.
bool doesNotReturnData = false;
NS_URIChainHasFlags(aLoadState->URI(),
nsIProtocolHandler::URI_DOES_NOT_RETURN_DATA,
&doesNotReturnData);
if (doesNotReturnData) {
// 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->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));
// Get the unstripped URI from the current document channel. The unstripped
// URI will be preserved if it's a reload.
nsCOMPtr<nsIURI> currentUnstrippedURI;
nsCOMPtr<nsIChannel> docChannel = GetCurrentDocChannel();
if (docChannel) {
nsCOMPtr<nsILoadInfo> docLoadInfo = docChannel->LoadInfo();
docLoadInfo->GetUnstrippedURI(getter_AddRefs(currentUnstrippedURI));
}
// Strip the target query parameters before creating the channel.
aLoadState->MaybeStripTrackerQueryStrings(mBrowsingContext,
currentUnstrippedURI);
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;
}
bool nsDocShell::CollectWireframe() {
const bool collectWireFrame =
mozilla::SessionHistoryInParent() &&
StaticPrefs::browser_history_collectWireframes() &&
mBrowsingContext->IsTopContent() && mActiveEntry;
if (!collectWireFrame) {
return false;
}
RefPtr<Document> doc = mContentViewer->GetDocument();
Nullable<Wireframe> wireframe;
doc->GetWireframeWithoutFlushing(false, wireframe);
if (wireframe.IsNull()) {
return false;
}
if (XRE_IsParentProcess()) {
SessionHistoryEntry* entry =
mBrowsingContext->Canonical()->GetActiveSessionHistoryEntry();
if (entry) {
entry->SetWireframe(Some(wireframe.Value()));
}
} else {
mozilla::Unused
<< ContentChild::GetSingleton()->SendSessionHistoryEntryWireframe(
mBrowsingContext, wireframe.Value());
}
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,
/* 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;
if (mActiveEntry) {
title = mActiveEntry->GetTitle();
}
UpdateActiveEntry(
true, /* aPreviousScrollPos = */ Nothing(), aNewURI, aNewURI,
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);
// 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:
if (buf.EqualsLiteral("newtab")) {
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;
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));
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, 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, 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->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::CreateWithInheritedAttributes(this);
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();
}
CollectWireframe();
}
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);
}
}
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;
}
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") && !mIsAppTab) {
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 IsElementAnchorOrArea(nsIContent* aContent) {
// Make sure we are dealing with either an <A> or <AREA> element in the HTML
// or XHTML namespace.
return aContent->IsAnyOfHTMLElements(nsGkAtoms::a, nsGkAtoms::area);
}
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 = mBrowsingContext->GetSandboxFlags();
}
uint32_t flags = INTERNAL_LOAD_FLAGS_NONE;
bool isElementAnchorOrArea = IsElementAnchorOrArea(aContent);
bool triggeringPrincipalIsSystemPrincipal =
aLoadState->TriggeringPrincipal()->IsSystemPrincipal();
if (isElementAnchorOrArea) {
MOZ_ASSERT(aContent->IsHTMLElement());
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();
NS_ENSURE_TRUE(referrerInner, NS_ERROR_UNEXPECTED);
if (!mScriptGlobal ||
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 =
isElementAnchorOrArea ? 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()->Cancel(NS_BINDING_ABORTED);
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) {
RefPtr<TimelineConsumers> timelines = TimelineConsumers::Get();
if (timelines && timelines->HasConsumer(this)) {
timelines->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) {
RefPtr<TimelineConsumers> timelines = TimelineConsumers::Get();
if (timelines && timelines->HasConsumer(this)) {
timelines->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) {
MOZ_ASSERT(mozilla::SessionHistoryInParent());
MOZ_LOG(gSHLog, LogLevel::Debug,
("nsDocShell %p MoveLoadingToActiveEntry", this));
bool hadActiveEntry = !!mActiveEntry;
mActiveEntry = nullptr;
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, mCurrentURI, hadActiveEntry, 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;
}
}
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