/* This Source Code Form is subject to the terms of the Mozilla Public *License,v.2.0.IfacopyoftheMPLwasnotdistributedwiththis
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
if (aLoadInfo->GetExternalContentPolicyType() !=
ExtContentPolicy::TYPE_DOCUMENT) { returnfalse;
}
return aBrowsingContext->IsTopContent();
}
// True if loading for top level document loading in active tab. staticbool IsUrgentStart(BrowsingContext* aBrowsingContext,
nsILoadInfo* aLoadInfo, uint32_t aLoadType) {
MOZ_ASSERT(aBrowsingContext);
MOZ_ASSERT(aLoadInfo);
if (!IsTopLevelDoc(aBrowsingContext, aLoadInfo)) { returnfalse;
}
if (aLoadType &
(nsIDocShell::LOAD_CMD_NORMAL | nsIDocShell::LOAD_CMD_HISTORY)) { return true;
}
#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
}
nsresult nsDocShell::Initialize(nsIOpenWindowInfo* aOpenWindowInfo,
mozilla::dom::WindowGlobalChild* aWindowActor) { if (mInitialized) { // We've already been initialized.
MOZ_ASSERT(!aOpenWindowInfo, "Tried to reinitialize with override principal");
MOZ_ASSERT(!aWindowActor, "Tried to reinitialize with a window actor"); return NS_OK;
}
MOZ_ASSERT(aOpenWindowInfo, "Must have openwindowinfo if not already initialized.");
NS_ASSERTION(mItemType == typeContent || mItemType == typeChrome, "Unexpected item type in docshell");
/* 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 = MakeRefPtr<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.
RefPtr proxy = MakeRefPtr<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;
}
// NOTE: Only listen for NOTIFY_PROGRESS on toplevel BrowsingContexts, as // listeners in the browser UI only cares about total progress on the toplevel // context. Aggregation of the total progress is currently handled within // `nsDocLoader`, and does not take out-of-process iframes into account. if (aBrowsingContext->IsTop()) {
notifyMask |= nsIWebProgress::NOTIFY_PROGRESS;
}
// 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, notifyMask); 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());
return ds.forget();
}
void nsDocShell::DestroyChildren() { for (auto* child : mChildList.ForwardRange()) {
nsCOMPtr<nsIDocShellTreeItem> shell = do_QueryObject(child);
NS_ASSERTION(shell, "docshell has null child");
// 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;
} elseif (aIID.Equals(NS_GET_IID(nsIAuthPrompt)) ||
aIID.Equals(NS_GET_IID(nsIAuthPrompt2))) { return NS_SUCCEEDED(GetAuthPrompt(PROMPT_NORMAL, aIID, aSink))
? NS_OK
: NS_NOINTERFACE;
} elseif (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;
} elseif (aIID.Equals(NS_GET_IID(nsIWebBrowserFind))) {
nsresult rv = EnsureFind(); if (NS_FAILED(rv)) { return rv;
}
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::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;
}
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
}
// 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.
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));
// Set up the inheriting principal in LoadState.
nsresult rv = aLoadState->SetupInheritingPrincipal(
bcType, mBrowsingContext->OriginAttributesRef());
NS_ENSURE_SUCCESS(rv, rv);
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()) {
WindowContext* topWc = mBrowsingContext->GetTopWindowContext(); if (topWc && !topWc->IsDiscarded()) {
MOZ_ALWAYS_SUCCEEDS(topWc->SetSHEntryHasUserInteraction(true));
}
}
if (aLoadState->GetOriginalURIString().isSome()) { // Save URI string in case it's needed later when // sending to search engine service in EndPageLoad()
mOriginalUriString = *aLoadState->GetOriginalURIString();
}
// 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;
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() &&
!aLoadState->HistoryBehavior()) { // 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! if (aLoadState->IsFormSubmission()) { #ifdef DEBUG if (!mEODForCurrentDocument) { const MaybeDiscarded<BrowsingContext>& targetBC =
aLoadState->TargetBrowsingContext();
MOZ_ASSERT_IF(GetBrowsingContext() == targetBC.get(),
aLoadState->LoadType() == LOAD_NORMAL_REPLACE);
} #endif
} else { bool inOnLoadHandler = false;
GetIsExecutingOnLoadHandler(&inOnLoadHandler); if (inOnLoadHandler) {
aLoadState->SetLoadType(LOAD_NORMAL_REPLACE);
}
}
} returnfalse;
}
/* OK. It is a subframe. Checkout the parent's loadtype. If the parent was *loadedthroughahistorymechanism,thengettheSHentryforthechild *fromtheparent.Thisisdonetorestoreframesetnavigationwhilegoing *back/forward.IftheparentwasloadedthroughanyotherloadType,setthe *child'sloadTypetooaccordingly,sothatsessionhistorydoesnotget *confused.
*/
// Get the parent's load type
uint32_t parentLoadType;
parentDS->GetLoadType(&parentLoadType);
if (!aContinueHandlingSubframeHistory) { 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 && !GetIsAttemptingToNavigate()) {
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 = MakeRefPtr<StopDetector>();
loadGroup->AddRequest(stopDetector, nullptr); // Need to set mCheckingSessionHistory so that // GetIsAttemptingToNavigate() returns true.
mCheckingSessionHistory = true;
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);
}
}
}
}
// 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.
if (mCurrentURI &&
(!NS_IsAboutBlank(mCurrentURI) || mLoadingEntry || mActiveEntry) &&
!aLoadState->HistoryBehavior()) { // 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();
// 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();
}
} elseif (parentLoadType == LOAD_REFRESH) { // Clear shEntry. For refresh loads, we have to load // what comes through the pipe, not what's in history.
aLoadState->ClearLoadIsFromSessionHistory();
} elseif ((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);
} elseif (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);
} elseif ((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);
}
returnfalse;
}
/* *Resetstatetoanewcontentmodelwithinthecurrentdocumentandthe *documentviewer.Calledbythedocumentbeforeinitiatinganoutofband *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;
}
if (mDocumentViewer && !mFiredUnloadEvent) { // Keep an explicit reference since calling PageHide could release // mDocumentViewer
nsCOMPtr<nsIDocumentViewer> viewer(mDocumentViewer);
mFiredUnloadEvent = true;
if (mTiming) {
mTiming->NotifyUnloadEventStart();
}
viewer->PageHide(true);
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(true);
}
}
// If the document is unloading, remove all dynamic subframe entries. if (!aSkipCheckingDynEntries) {
RefPtr<ChildSHistory> rootSH = GetRootSessionHistory(); if (rootSH) {
MOZ_LOG(
gSHLog, LogLevel::Debug,
("nsDocShell %p unloading, remove dynamic subframe entries", this)); if (mActiveEntry) {
mBrowsingContext->RemoveDynEntriesFromActiveSessionHistoryEntry();
}
MOZ_LOG(gSHLog, LogLevel::Debug,
("nsDocShell %p unloading, no active entries", this));
}
}
// Now make sure our editor, if any, is detached before we go // any farther.
DetachEditorFromWindow();
}
}
// 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<nsIDocumentViewer> viewer(mDocumentViewer); if (aShow) {
viewer->SetIsHidden(false);
mRefreshURIList = std::move(mBFCachedRefreshURIList);
RefreshURIFromQueue();
mFiredUnloadEvent = false;
RefPtr<Document> doc = viewer->GetDocument(); if (doc) {
doc->NotifyActivityChanged();
nsCOMPtr<nsPIDOMWindowInner> inner =
mScriptGlobal ? mScriptGlobal->GetCurrentInnerWindow() : nullptr; if (mBrowsingContext->IsTop()) {
doc->NotifyPossibleTitleChange(false);
doc->SetLoadingOrRestoredFromBFCacheTimeStampToNow(); if (inner) { // Now that we have found the inner window of the page restored // from the history, we have to make sure that // performance.navigation.type is 2. // Traditionally this type change has been done to the top level page // only.
Performance* performance = inner->GetPerformance(); if (performance) {
performance->GetDOMTiming()->NotifyRestoreStart();
}
}
}
nsCOMPtr<nsIChannel> channel = doc->GetChannel(); if (channel) {
SetLoadType(LOAD_HISTORY);
mEODForCurrentDocument = false;
mIsRestoringDocument = true;
mLoadGroup->AddRequest(channel, nullptr);
nsCOMPtr<nsIURI> uri; if (doc->FragmentDirective()) { // If we have fragment directives, then we've mutated the document // uri. Set the current URI from session history instead.
uri = mActiveEntry ? mActiveEntry->GetURI() : nullptr;
} if (!uri) {
uri = doc->GetDocumentURI();
}
SetCurrentURI(uri, 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);
}
}
} elseif (!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);
}
nsresult nsDocShell::Dispatch(already_AddRefed<nsIRunnable> aRunnable) {
nsCOMPtr<nsIRunnable> runnable(aRunnable); if (NS_WARN_IF(!GetWindow())) { // Window should only be unavailable after destroyed.
MOZ_ASSERT(mIsBeingDestroyed); return NS_ERROR_FAILURE;
} return SchedulerGroup::Dispatch(runnable.forget());
}
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;
}
// 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) { returnfalse;
}
if (!NS_IsAboutBlankAllowQueryAndFragment(mCurrentURI)) {
mHasLoadedNonBlankURI = true;
}
// Don't fire onLocationChange when creating a the initial about:blank // document, as this can happen when it's not safe for us to run script. // Note that if this initial about:blank isn't immediately navigated // away from, the onLocationChange will be fired as part of committing // to keeping the initial about:blank as the actual first initial // navigation destination. if (aIsInitialAboutBlank) {
MOZ_ASSERT(!mHasLoadedNonBlankURI && !aRequest && aLocationFlags == 0); returnfalse;
}
nsIURI* uri = doc->GetOriginalURI(); bool isFileURL = uri && uri->SchemeIs("file");
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")); break; case kCharsetFromInitialAutoDetectionWouldNotHaveBeenUTF8Generic: case kCharsetFromFinalAutoDetectionWouldNotHaveBeenUTF8Generic: case kCharsetFromFinalAutoDetectionWouldNotHaveBeenUTF8GenericInitialWasASCII: case kCharsetFromInitialAutoDetectionWouldNotHaveBeenUTF8Content: case kCharsetFromFinalAutoDetectionWouldNotHaveBeenUTF8Content: case kCharsetFromFinalAutoDetectionWouldNotHaveBeenUTF8ContentInitialWasASCII:
LOGCHARSETMENU(("TEXT:UnlabeledNonUtf8")); break; case kCharsetFromInitialAutoDetectionWouldNotHaveBeenUTF8DependedOnTLD: case kCharsetFromFinalAutoDetectionWouldNotHaveBeenUTF8DependedOnTLD: case kCharsetFromFinalAutoDetectionWouldNotHaveBeenUTF8DependedOnTLDInitialWasASCII:
LOGCHARSETMENU(("TEXT:UnlabeledNonUtf8TLD")); break; case kCharsetFromInitialAutoDetectionWouldHaveBeenUTF8: case kCharsetFromFinalAutoDetectionWouldHaveBeenUTF8InitialWasASCII:
LOGCHARSETMENU(("TEXT:UnlabeledUtf8")); break; case kCharsetFromChannel: if (encoding == UTF_8_ENCODING) {
LOGCHARSETMENU(("TEXT:ChannelUtf8"));
} else {
LOGCHARSETMENU(("TEXT:ChannelNonUtf8"));
} break; default:
LOGCHARSETMENU(("TEXT:Bug")); break;
}
} else { switch (charsetSource) { case kCharsetFromInitialAutoDetectionASCII: // Deliberately no final version
LOGCHARSETMENU(("HTML:UnlabeledAscii")); break; case kCharsetFromInitialAutoDetectionWouldNotHaveBeenUTF8Generic: case kCharsetFromFinalAutoDetectionWouldNotHaveBeenUTF8Generic: case kCharsetFromFinalAutoDetectionWouldNotHaveBeenUTF8GenericInitialWasASCII: case kCharsetFromInitialAutoDetectionWouldNotHaveBeenUTF8Content: case kCharsetFromFinalAutoDetectionWouldNotHaveBeenUTF8Content: case kCharsetFromFinalAutoDetectionWouldNotHaveBeenUTF8ContentInitialWasASCII:
LOGCHARSETMENU(("HTML:UnlabeledNonUtf8")); break; case kCharsetFromInitialAutoDetectionWouldNotHaveBeenUTF8DependedOnTLD: case kCharsetFromFinalAutoDetectionWouldNotHaveBeenUTF8DependedOnTLD: case kCharsetFromFinalAutoDetectionWouldNotHaveBeenUTF8DependedOnTLDInitialWasASCII:
LOGCHARSETMENU(("HTML:UnlabeledNonUtf8TLD")); break; case kCharsetFromInitialAutoDetectionWouldHaveBeenUTF8: case kCharsetFromFinalAutoDetectionWouldHaveBeenUTF8InitialWasASCII:
LOGCHARSETMENU(("HTML:UnlabeledUtf8")); break; case kCharsetFromChannel: if (encoding == UTF_8_ENCODING) {
LOGCHARSETMENU(("HTML:ChannelUtf8"));
} else {
LOGCHARSETMENU(("HTML:ChannelNonUtf8"));
} break; case kCharsetFromXmlDeclaration: case kCharsetFromMetaTag: if (isFileURL) {
LOGCHARSETMENU(("HTML:LocalLabeled"));
} elseif (encoding == UTF_8_ENCODING) {
LOGCHARSETMENU(("HTML:MetaUtf8"));
} else {
LOGCHARSETMENU(("HTML:MetaNonUtf8"));
} break; default:
LOGCHARSETMENU(("HTML:Bug")); break;
}
} 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;
}
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;
} elseif (aIndex < mPreviousEntryIndex) {
--mPreviousEntryIndex;
} if (mLoadedEntryIndex == aIndex) {
mLoadedEntryIndex = 0;
} elseif (aIndex < mLoadedEntryIndex) {
--mLoadedEntryIndex;
}
for (auto* child : mChildList.ForwardRange()) {
nsCOMPtr<nsIDocShell> shell = do_QueryObject(child); if (shell) {
static_cast<nsDocShell*>(shell.get())->HistoryEntryRemoved(aIndex);
}
}
NS_IMETHODIMP
nsDocShell::SetWindowDraggingAllowed(bool aValue) {
RefPtr<nsDocShell> parent; if (!aValue && mItemType == typeChrome &&
!(parent = GetInProcessParentDocshell())) { // 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; if (mItemType == typeChrome && !(parent = GetInProcessParentDocshell())) { // Top level chrome window
*aValue = true;
} else {
*aValue = mWindowDraggingAllowed;
} 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>();
}
// 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->GetCurrentInnerWindow() &&
mScriptGlobal->GetCurrentInnerWindow()->GetExtantDoc()) {
MOZ_DIAGNOSTIC_ASSERT(
mScriptGlobal->GetCurrentInnerWindow()->GetClientInfo().isSome());
MOZ_DIAGNOSTIC_ASSERT(!mInitialClientSource); return;
}
// Don't recreate the initial client source. We call this multiple times // when DoChannelLoad() is called before CreateAboutBlankDocumentViewer. 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 // CreateAboutBlankDocumentViewer. 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;
}
// 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.
MaybeInheritController(mInitialClientSource.get(), principal);
}
void VerifyCientPrincipalInfosMatch(const mozilla::ipc::PrincipalInfo& aLeft, const mozilla::ipc::PrincipalInfo& aRight) { // Inheriting a controller when the principals don't match would cause a // crash. Let's do the checks earlier to crash here already instead of // ClientSource::SetController. And assert each condition separately. See bug // 1880012.
MOZ_RELEASE_ASSERT(aLeft.type() == aRight.type());
switch (aLeft.type()) { case mozilla::ipc::PrincipalInfo::TContentPrincipalInfo: { const mozilla::ipc::ContentPrincipalInfo& leftContent =
aLeft.get_ContentPrincipalInfo(); const mozilla::ipc::ContentPrincipalInfo& rightContent =
aRight.get_ContentPrincipalInfo();
{ // The most likely mismatch is the foreign bit in the partition key. // See bug 2006265 and 2013379.
nsAutoString scheme;
nsAutoString baseDomain;
int32_t port; bool leftForeignBit; bool rightForeignBit;
OriginAttributes::ParsePartitionKey(leftContent.attrs().mPartitionKey,
scheme, baseDomain, port,
leftForeignBit);
OriginAttributes::ParsePartitionKey(rightContent.attrs().mPartitionKey,
scheme, baseDomain, port,
rightForeignBit);
MOZ_RELEASE_ASSERT(leftForeignBit == rightForeignBit);
}
MOZ_RELEASE_ASSERT(leftContent.attrs() == rightContent.attrs());
MOZ_RELEASE_ASSERT(leftContent.originNoSuffix() ==
rightContent.originNoSuffix()); return;
} case mozilla::ipc::PrincipalInfo::TNullPrincipalInfo: { // null principal never matches
MOZ_RELEASE_ASSERT(false, "Clients have null principals"); return;
} default: { break;
}
}
}
// 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(aPrincipal, uri)) { return;
}
// 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);
}
nsCOMPtr<nsIURIContentListener> parentURIListener(do_GetInterface(parent)); if (parentURIListener) {
mContentListener->SetParentContentListener(parentURIListener);
}
return NS_OK;
}
void nsDocShell::MaybeRestoreWindowName() { if (!StaticPrefs::privacy_window_name_update_enabled()) { return;
}
// We only restore window.name for the top-level content. if (!mBrowsingContext->IsTopContent()) { return;
}
if (mLoadingEntry) {
name = mLoadingEntry->mInfo.GetName();
}
if (name.IsEmpty()) { return;
}
// Step 4.4.1. Set the name to the browsing context.
(void)mBrowsingContext->SetName(name);
// Step 4.4.2. Clear the name of all entries that are contiguous and // same-origin with the loading entry. 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());
}
}
if (XRE_IsParentProcess()) {
SessionHistoryEntry* entry =
mBrowsingContext->Canonical()->GetActiveSessionHistoryEntry(); if (entry) {
nsSHistory::WalkContiguousEntries(
entry, [&](SessionHistoryEntry* aEntry) { aEntry->SetName(name); });
}
} else { // Ask parent process to store the name in entries.
(void)ContentChild::GetSingleton()
->SendSessionHistoryEntryStoreWindowNameInContiguousEntries(
mBrowsingContext, name);
}
}
// Don't automatically set the progress based on the tree owner for frames if (!IsSubframe()) {
nsCOMPtr<nsIWebProgress> webProgress =
do_QueryInterface(GetAsSupports(this));
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!");
// 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 (!mDocumentViewer) { return NS_OK;
}
Document* doc = mDocumentViewer->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());
nsDocShell* nsDocShell::GetInProcessChildAt(int32_t aIndex) { #ifdef DEBUG if (aIndex < 0) {
NS_WARNING("Negative index passed to GetChildAt");
} elseif (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);
}
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");
}
}
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, StaticPrefs::browser_navigation_requireUserInteraction());
MOZ_LOG(gSHLog, LogLevel::Verbose,
("nsDocShell %p CanGoBack()->%d", this, *aCanGoBack));
return NS_OK;
} return NS_ERROR_FAILURE;
}
NS_IMETHODIMP
nsDocShell::GetCanGoBackIgnoringUserInteraction(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, false);
MOZ_LOG(gSHLog, LogLevel::Verbose,
("nsDocShell %p CanGoBackIgnoringUserInteraction()->%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, StaticPrefs::browser_navigation_requireUserInteraction());
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
}
NS_IMETHODIMP
nsDocShell::GoForward(bool aRequireUserInteraction, bool aUserActivation) { if (!IsNavigationAllowed()) { return NS_OK; // JS may not handle returning of an error code
}
// 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
}
nsresult nsDocShell::LoadURI(nsIURI* aURI, const LoadURIOptions& aLoadURIOptions) { if (!IsNavigationAllowed()) { return NS_OK; // JS may not handle returning of an error code
}
RefPtr<nsDocShellLoadState> loadState;
nsresult rv = nsDocShellLoadState::CreateFromLoadURIOptions(
mBrowsingContext, aURI, aLoadURIOptions, getter_AddRefs(loadState));
MOZ_ASSERT(rv != NS_ERROR_MALFORMED_URI); if (NS_FAILED(rv) || !loadState) { return NS_ERROR_FAILURE;
}
// Set the captive portal tab flag on the browsing context if requested if (loadState->GetIsCaptivePortalTab()) {
(void)mBrowsingContext->SetIsCaptivePortalTab(true);
}
return LoadURI(loadState, true);
}
NS_IMETHODIMP
nsDocShell::LoadURIFromScript(nsIURI* aURI,
JS::Handle<JS::Value> aLoadURIOptions,
JSContext* aCx) { // generate dictionary for aLoadURIOptions and forward call
LoadURIOptions loadURIOptions; if (!loadURIOptions.Init(aCx, aLoadURIOptions)) { return NS_ERROR_INVALID_ARG;
} return LoadURI(aURI, loadURIOptions);
}
nsresult nsDocShell::FixupAndLoadURIString( const nsAString& aURIString, const LoadURIOptions& aLoadURIOptions) { if (!IsNavigationAllowed()) { return NS_OK; // JS may not handle returning of an error code
}
uint32_t loadFlags = aLoadURIOptions.mLoadFlags; if (NS_ERROR_MALFORMED_URI == rv) {
MOZ_LOG(gSHLog, LogLevel::Debug,
("Creating an active entry on nsDocShell %p to %s (because " "we're showing an error page)",
this, NS_ConvertUTF16toUTF8(aURIString).get()));
// We need to store a session history entry. We don't have a valid URI, so // we use about:blank instead.
nsCOMPtr<nsIURI> uri;
MOZ_ALWAYS_SUCCEEDS(NS_NewURI(getter_AddRefs(uri), "about:blank"_ns));
nsCOMPtr<nsIPrincipal> triggeringPrincipal; if (aLoadURIOptions.mTriggeringPrincipal) {
triggeringPrincipal = aLoadURIOptions.mTriggeringPrincipal;
} else {
triggeringPrincipal = nsContentUtils::GetSystemPrincipal();
}
UniquePtr<SessionHistoryInfo> previousActiveEntry(mActiveEntry.release());
mActiveEntry = MakeUnique<SessionHistoryInfo>(
uri, triggeringPrincipal, nullptr, nullptr, nullptr,
nsLiteralCString("text/html"));
mBrowsingContext->SetActiveSessionHistoryEntry(
Nothing(), mActiveEntry.get(), previousActiveEntry.get(),
MAKE_LOAD_TYPE(LOAD_NORMAL, loadFlags), /* aUpdatedCacheKey = */ 0); if (DisplayLoadError(rv, nullptr, PromiseFlatString(aURIString).get(),
nullptr) &&
(loadFlags & LOAD_FLAGS_ERROR_LOAD_CHANGES_RV) != 0) { return NS_ERROR_LOAD_SHOWED_ERRORPAGE;
}
}
if (NS_FAILED(rv) || !loadState) { return NS_ERROR_FAILURE;
}
// Set the captive portal tab flag on the browsing context if requested if (loadState->GetIsCaptivePortalTab()) {
(void)mBrowsingContext->SetIsCaptivePortalTab(true);
}
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 &&
!mBrowsingContext->GetParentWindowContext()->IsInProcess()) {
(void)browserChild->SendMaybeFireEmbedderLoadEvents(
aFireFrameErrorEvent ? EmbedderElementEventType::ErrorEvent
: EmbedderElementEventType::NoEvent);
}
}
nsCOMPtr<nsITransportSecurityInfo> tsi; if (aFailedChannel) {
aFailedChannel->GetSecurityInfo(getter_AddRefs(tsi));
} if (tsi) {
uint32_t securityState;
tsi->GetSecurityState(&securityState); if (securityState & nsIWebProgressListener::STATE_USES_SSL_3) {
error = "sslv3Used";
addHostPort = true;
} elseif (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 (Preferences::GetBool("browser.xul.error_pages.expert_bad_cert", false)) {
cssClass.AssignLiteral("expertBadCert");
}
// HSTS/pinning takes precedence over the expert bad cert pref. We // never want to show the "Add Exception" button for these sites. // In the future we should differentiate between an HSTS host and a // pinned host and display a more informative message to the user. if (isStsHost || isPinnedHost) {
isBadStsCertError = true;
cssClass.AssignLiteral("badStsCert");
}
// 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);
}
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" ");
}
} elseif (NS_ERROR_FRAME_CRASHED == aError) {
errorPage.AssignLiteral("framecrashed");
error = "framecrashed";
messageStr.AssignLiteral(u" ");
} elseif (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" ");
}
} elseif (aError == NS_ERROR_RESTRICTED_CONTENT) {
errorPage.AssignLiteral("restricted");
error = "restrictedcontent"; 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 the client is misconfigured
error = "clientSocketMisconfiguration"; 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: // Page blocked by policy
error = "blockedByPolicy"; break; case NS_ERROR_DOM_COOP_FAILED:
error = "blockedByCOOP";
errorDescriptionID = "blockedByCORP"; break; case NS_ERROR_DOM_COEP_FAILED:
error = "blockedByCOEP";
errorDescriptionID = "blockedByCORP"; break; case NS_ERROR_DOM_INVALID_HEADER_VALUE:
error = "invalidHeaderValue"; 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; case NS_ERROR_BASIC_HTTP_AUTH_DISABLED:
error = "basicHttpAuthDisabled"; break; default: break;
}
}
nsresult delegateErrorCode = aError; // If the HTTPS-Only Mode upgraded this request and the upgrade might have // caused this error, we replace the error-page with about:httpsonlyerror if (nsHTTPSOnlyUtils::CouldBeHttpsOnlyError(aFailedChannel, aError)) {
errorPage.AssignLiteral("httpsonlyerror");
delegateErrorCode = NS_ERROR_HTTPS_ONLY;
} elseif (isBadStsCertError) {
delegateErrorCode = NS_ERROR_BAD_HSTS_CERT;
}
if (nsCOMPtr<nsILoadURIDelegate> loadURIDelegate = GetLoadURIDelegate()) {
nsCOMPtr<nsIURI> errorPageURI;
rv = loadURIDelegate->HandleLoadError(
aURI, delegateErrorCode, NS_ERROR_GET_MODULE(delegateErrorCode),
getter_AddRefs(errorPageURI)); // If the docshell is going away there's no point in showing an error page. if (NS_FAILED(rv) || mIsBeingDestroyed) {
*aDisplayedErrorPage = false; return NS_OK;
}
// 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 (aURI->SchemeIs("file")) {
aURI->GetPathQueryRef(spec);
} else {
aURI->GetSpec(spec);
}
// 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) &&
aURI->SchemeIs("https")) { // 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) {
(void)mScriptGlobal->GetDoc();
}
// Display a message box
prompter->Alert(nullptr, messageStr.get());
}
nsCOMPtr<nsICaptivePortalService> cps = do_GetService(NS_CAPTIVEPORTAL_CID);
int32_t cpsState; if (cps && NS_SUCCEEDED(cps->GetState(&cpsState)/* This Source Code Form is subject to the terms of the Mozilla Public if(cpsState==nsICaptivePortalService::LOCKED_PORTAL){ errorPageUrl.AppendLiteral("&captive=true"); } if(strcmp(aErrorPage,"neterror")==0){ java.lang.StringIndexOutOfBoundsException: Index 8 out of bounds for length 0 "unknown","not_captive","unlocked_portal","locked_portal"}; if(cpsState>=0&& size_t(cpsState)<std::size(kCaptivePortalStateNames)){ errorPageUrl.AppendLiteral("&captivePortalState="); aRv.ailed(java.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 21 } } }
RefPtrloadState=MakeRefPtr<nsDocShellLoadState>(aErrorURI); loadState->SetTriggeringPrincipal(nsContentUtils::GetSystemPrincipal()); if(mBrowsingContext){ loadState->SetTriggeringSandboxFlags(mBrowsingContext->GetSandboxFlags()); loadState->SetTriggeringWindowId( mBrowsingContext->GetCurrentInnerWindowId()); nsPIDOMWindowInner*innerWin=mScriptGlobal->GetCurrentInnerWindow(); if(innerWin){ loadState->SetTriggeringStorageAccess(innerWin->UsingStorageAccess()); } } loadState->SetLoadType(LOAD_ERROR_PAGE); loadState->SetFirstParty(true); loadState->SetSourceBrowsingContext(mBrowsingContext); if(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)); }
// Prevent initial about:blank handling, as it's likely irrelevant and // keeps us from needing to change GeckoView / NavigationDelegateTest. // It also makes the load more consistent with non-about-blank cases. loadState->ProhibitInitialAboutBlankHandling();
// 1. If userInvolvement is not "browser UI", then: if(aUserInvolvement!=UserNavigationInvolvement::BrowserUI){ // 1.1 Let navigation be navigable's active window's navigation API. nsPIDOMWindowOuter*windowOuter=GetWindow(); MOZ_DIAGNOSTIC_ASSERT(windowOuter); nsPIDOMWindowInner*windowInner=windowOuter->GetCurrentInnerWindow(); MOZ_DIAGNOSTIC_ASSERT(windowInner); RefPtrnavigation=windowInner->Navigation();
// 1.2 Let destinationNavigationAPIState be navigable's active session // history entry's navigation API state. // 1.3 If navigationAPIState is not null, then set // destinationNavigationAPIState to navigationAPIState. RefPtr<nsIStructuredCloneContainer>destinationNavigationAPIState= aNavigationAPIState; if(!destinationNavigationAPIState){ destinationNavigationAPIState= mActiveEntry?mActiveEntry->GetNavigationAPIState():nullptr; }
// 1.4 Let continue be the result of firing a push/replace/reload navigate // event at navigation with navigationType set to "reload", // isSameDocument set to false, userInvolvement set to userInvolvement, // destinationURL set to navigable's active session history entry's URL, // and navigationAPIState set to destinationNavigationAPIState. // 1.5 If continue is false, then return. RefPtrdestinationURL=mActiveEntry?mActiveEntry->GetURI():nullptr; if(navigation&& !navigation->FirePushReplaceReloadNavigateEvent( *aCx,NavigationType::Reload,destinationURL,
/* aIsSameDocument */false, Some(aUserInvolvement), /* aSourceElement*/ nullptr, /* aFormDataEntryList */ nullptr,
destinationNavigationAPIState, /* aClassiCHistoryAPIState */ nullptr,
aNavigationAPIMethodTracker)) { return NS_OK;
}
}
// The following steps are implemented by the remainder of ReloadNavigable.
// Send notifications to the HistoryListener if any, about the impending // reload
RefPtr<ChildSHistory> rootSH = GetRootSessionHistory();
MOZ_LOG(gSHLog, LogLevel::Debug, ("nsDocShell %p Reload", this)); bool forceReload = IsForceReloadType(loadType); if (!XRE_IsParentProcess()) {
++mPendingReloadCount;
nsCOMPtr<nsIDocumentViewer> viewer(mDocumentViewer);
NS_ENSURE_STATE(viewer);
bool okToUnload = true;
MOZ_TRY(viewer->PermitUnload(&okToUnload)); if (mIsBeingDestroyed) { // unload handler destroyed this docshell. return NS_ERROR_NOT_AVAILABLE;
} if (!okToUnload) { return NS_OK;
}
RefPtr<Document> doc(GetDocument());
RefPtr<BrowsingContext> browsingContext(mBrowsingContext);
nsCOMPtr<nsIURI> currentURI(mCurrentURI);
nsCOMPtr<nsIReferrerInfo> referrerInfo(mReferrerInfo);
RefPtr stopDetector = MakeRefPtr<StopDetector>();
nsCOMPtr<nsILoadGroup> loadGroup;
GetLoadGroup(getter_AddRefs(loadGroup)); if (loadGroup) { // loadGroup may be null in theory. In that case stopDetector just // doesn't do anything.
loadGroup->AddRequest(stopDetector, nullptr);
}
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));
if (mLoadType == LOAD_ERROR_PAGE) {
mActiveEntryIsLoadingFromSessionHistory = false;
mFailedChannel = nullptr;
mFailedURI = nullptr;
}
if (nsIWebNavigation::STOP_CONTENT & aStopFlags) { // Stop the document loading and animations if (mDocumentViewer) {
nsCOMPtr<nsIDocumentViewer> viewer = mDocumentViewer;
viewer->Stop();
}
} elseif (nsIWebNavigation::STOP_NETWORK & aStopFlags) { // Stop the document loading only if (mDocumentViewer) {
RefPtr<Document> doc = mDocumentViewer->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 CreateDocumentViewer. 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! if (aUnsetOngoingNavigation == UnsetOngoingNavigation::No && mLoadGroup) { // Tag load group cancellation as navigation-caused so that XHR can // suppress abort events (bug 1505389). SetCanceledReason is // first-write-wins, so nsDocLoader::Stop's reason won't overwrite.
// XXX Consider using a flag on LoadGroup instead of CanceledReason
mLoadGroup->SetCanceledReason("navigation"_ns);
}
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);
}
}
// 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());
RefPtr<nsIPrincipal> nullPrincipal =
NullPrincipal::CreateWithInheritedAttributes(otherDoc->NodePrincipal());
loadState->SetPrincipalToInherit(nullPrincipal);
loadState->SetPartitionedPrincipalToInherit(nullPrincipal);
loadState->SetOriginalURI(nullptr);
loadState->SetResultPrincipalURI(nullptr);
// Initial about:blank handling is probably irrelevant, but newURI shouldn't // anyway be about:blank. Otherwise we should prohibit initial about blank // handling.
MOZ_ASSERT(!NS_IsAboutBlankAllowQueryAndFragment(newURI), "We only expect view-source:// URIs");
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");
// Brak the cycle with the initial client, if present.
mInitialClientSource.reset();
// 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();
// 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);
}
// Hold strong ref, since SetBounds can make us null out mDocumentViewer
nsCOMPtr<nsIDocumentViewer> viewer = mDocumentViewer; if (viewer) {
uint32_t cvflags = (aFlags & nsIBaseWindow::eDelayResize)
? nsIDocumentViewer::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);
}
if (nsCOMPtr<nsIObserverService> obs = services::GetObserverService()) {
obs->NotifyObservers(GetAsSupports(this), "docshell-position-size-changed",
nullptr);
}
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);
}
}
NS_IMETHODIMP
nsDocShell::GetNativeHandle(nsAString& aNativeHandle) { // the nativeHandle should be accessed from nsIAppWindow return NS_ERROR_NOT_IMPLEMENTED;
}
// Check with the tree owner as well to give embedders a chance to // expose visibility as well.
nsresult rv = treeOwnerAsWin->GetVisibility(aVisibility); if (rv == NS_ERROR_NOT_IMPLEMENTED) { // The tree owner had no opinion on our visibility.
*aVisibility = true; return NS_OK;
} return rv;
}
// 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() &&
!mBrowsingContext->Windowless()) { // 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 && mDocumentViewer) { if (Document* doc = mDocumentViewer->GetDocument()) {
timing = doc->GetNavigationTiming();
}
} if (timing) {
timing->NotifyDocShellStateChanged(
isActive ? nsDOMNavigationTiming::DocShellState::eActive
: nsDOMNavigationTiming::DocShellState::eInactive);
}
// Restart or stop meta refresh timers if necessary if (mDisableMetaRefreshWhenInactive) { if (isActive) {
ResumeRefreshURIs();
} else {
SuspendRefreshURIs();
}
}
if (InputTaskManager::CanSuspendInputEvent()) {
mBrowsingContext->Group()->UpdateInputTaskManagerIfNeeded(isActive);
}
}
NS_IMETHODIMP
nsDocShell::SetDefaultLoadFlags(uint32_t aDefaultLoadFlags) { if (!mWillChangeProcess) { // Intentionally ignoring handling discarded browsing contexts.
(void)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::GetMainWidget(nsIWidget** aMainWidget) { // We don't create our own widget, so simply return the parent one. return GetParentWidget(aMainWidget);
}
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 (mActiveEntry && mBrowsingContext) {
mActiveEntry->SetTitle(mTitle); if (aUpdateEntryInSessionHistory) { if (XRE_IsParentProcess()) {
SessionHistoryEntry* entry =
mBrowsingContext->Canonical()->GetActiveSessionHistoryEntry(); if (entry) {
entry->SetTitle(mTitle);
}
} else {
(void)ContentChild::GetSingleton()->SendSessionHistoryEntryTitle(
mBrowsingContext, mTitle);
}
}
}
}
nsPoint nsDocShell::GetCurScrollPos() {
nsPoint scrollPos; if (ScrollContainerFrame* sf = GetRootScrollContainerFrame()) {
scrollPos = sf->GetVisualViewportOffset();
} return scrollPos;
}
// 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;
}
/* Check if Meta refresh/redirects are permitted. Some *embeddedapplicationsmaynotwanttodothis. *MustdothisbeforesendingoutNOTIFY_REFRESHevents *becauselistenersmayhavesideeffects(e.g.displayinga *buttontomanuallytriggertherefreshlater).
*/ 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;
}
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);
// Set the triggering pricipal to aPrincipal if available, or current // document's principal otherwise.
nsCOMPtr<nsIPrincipal> principal = aPrincipal; if (!principal) {
principal = doc->NodePrincipal();
}
loadState->SetTriggeringPrincipal(principal);
loadState->SetPolicyContainer(doc->GetPolicyContainer());
loadState->SetHasValidUserGestureActivation(
doc->HasValidTransientUserGestureActivation());
/* Check if this META refresh causes a redirection *toanothersite.
*/ bool equalUri = false;
nsresult rv = aURI->Equals(mCurrentURI, &equalUri);
if (NS_SUCCEEDED(rv) && !equalUri && aDelay <= REFRESH_REDIRECT_TIMER) { /* It is a META refresh based redirection within the threshold time *wehaveinmind(15000msasdefinedbyREFRESH_REDIRECT_TIMER). *PassaREPLACEflagtoLoadURI().
*/
loadState->SetLoadType(LOAD_REFRESH_REPLACE);
} else {
loadState->SetLoadType(LOAD_REFRESH);
}
constbool sendReferrer = StaticPrefs::network_http_referer_sendFromRefresh(); /* The document's referrer policy is needed instead of mReferrerInfo's *referrerpolicy.
*/ const RefPtr referrerInfo = MakeRefPtr<ReferrerInfo>(*doc, sendReferrer); /* We mimic HTTP, which passes the original referrer. See step 3 of *<https://html.spec.whatwg.org/multipage/browsing-the-web.html#create-navigation-params-by-fetching>.
*/
loadState->SetReferrerInfo(referrerInfo);
// 1. Let urlString be the substring of input from the code point at
// position to the end of the string.
const char16_t* urlStart = aPosition;
const char16_t* urlEnd = aEnd;
// 2. If the code point in input pointed to by position is U+0055 (U) or
// U+0075 (u), then advance position to the next code point.
// Otherwise, jump to the step labeled skip quotes. if (*aPosition == 'U' || *aPosition == 'u') {
++aPosition;
// 3. If the code point in input pointed to by position is U+0052 (R) or
// U+0072 (r), then advance position to the next code point.
// Otherwise, jump to the step labeled parse. if (aPosition == aEnd || (*aPosition != 'R' && *aPosition != 'r')) {
return std::make_tuple(urlStart, urlEnd);
}
++aPosition;
// 4. If the code point in input pointed to by position is U+004C (L) or
// U+006C (l), then advance position to the next code point.
// Otherwise, jump to the step labeled parse. if (aPosition == aEnd || (*aPosition != 'L' && *aPosition != 'l')) {
return std::make_tuple(urlStart, urlEnd);
}
++aPosition;
// 5. Skip ASCII whitespace within input given position.
aPosition = SkipASCIIWhitespace(aPosition, aEnd);
// 6. If the code point in input pointed to by position is U+003D (=),
// then advance position to the next code point. Otherwise, jump to
// the step labeled parse. if (aPosition == aEnd || *aPosition != '=') {
return std::make_tuple(urlStart, urlEnd);
}
++aPosition;
// 7. Skip ASCII whitespace within input given position.
aPosition = SkipASCIIWhitespace(aPosition, aEnd);
}
// 8. Skip quotes: If the code point in input pointed to by position is
// U+0027 (') or U+0022 ("), then let quote be that code point, and
// advance position to the next code point. Otherwise, let quote be
// the empty string.
Maybe<char> quote; if (aPosition != aEnd && (*aPosition == '\'' || *aPosition == '"')) {
quote.emplace(*aPosition);
++aPosition;
}
// 9. Set urlString to the substring of input from the code point at
// position to the end of the string.
urlStart = aPosition;
urlEnd = aEnd;
// 10. If quote is not the empty string, and there is a code point in
// urlString equal to quote, then truncate urlString at that code
// point, so that it and all subsequent code points are removed.
const char16_t* quotePos; if (quote.isSome() &&
(quotePos = nsCharTraits<char16_t>::find(
urlStart, std::distance(urlStart, aEnd), quote.value()))) {
urlEnd = quotePos;
}
// 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_DidNotConsumeAllInput |
nsContentUtils::eParseHTMLInteger_Error |
nsContentUtils::eParseHTMLInteger_ErrorOverflow)));
return;
}
MOZ_ASSERT(
!(result & nsContentUtils::eParseHTMLInteger_DidNotConsumeAllInput));
// 8. Collect a sequence of code points that are ASCII digits and U+002E FULL
// STOP characters (.) from input given position. Ignore any collected
// characters. while (position != end &&
(mozilla::IsAsciiDigit(*position) || *position == '.')) {
++position;
}
// 9. Let urlRecord be document's URL.
nsCOMPtr<nsIURI> urlRecord(aDocument->GetDocumentURI());
// 10. If position is not past the end of input if (position != end) {
// 1. If the code point in input pointed to by position is not U+003B (;),
// U+002C (,), or ASCII whitespace, then return. if (*position != ';' && *position != ',' &&
!mozilla::IsAsciiWhitespace(*position)) {
return;
}
// 2. Skip ASCII whitespace within input given position.
position = SkipASCIIWhitespace(position, end);
// 3. If the code point in input pointed to by position is U+003B (;) or
// U+002C (,), then advance position to the next code point. if (position != end && (*position == ';' || *position == ',')) {
++position;
// 4. Skip ASCII whitespace within input given position.
position = SkipASCIIWhitespace(position, end);
}
// 11. If position is not past the end of input, then: if (position != end) {
const char16_t* urlStart;
const char16_t* urlEnd;
// 1-10. See ExtractURLString.
std::tie(urlStart, urlEnd) = ExtractURLString(position, end);
// 11. Parse: Parse urlString relative to document. If that fails, return.
// Otherwise, set urlRecord to the resulting URL record.
nsresult rv =
NS_NewURI(getter_AddRefs(urlRecord),
Substring(urlStart, std::distance(urlStart, urlEnd)),
/* charset = */ nullptr, aDocument->GetDocBaseURI());
NS_ENSURE_SUCCESS_VOID(rv);
}
}
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));
// 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);
}
}
}
}
nsresult nsDocShell::Embed(nsIDocumentViewer* aDocumentViewer,
WindowGlobalChild* aWindowActor,
bool aIsTransientAboutBlank, nsIRequest* aRequest,
nsIURI* aPreviousURI) {
// Save the LayoutHistoryState of the previous document, before
// setting up new document
PersistLayoutHistoryState();
// XXX What if SetupNewViewer fails? if (mLoadingEntry) {
// Set history.state
SetDocCurrentStateObj(mLoadingEntry ? &mLoadingEntry->mInfo : nullptr);
}
if (!aIsTransientAboutBlank && !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);
}
}
// 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);
}
NS_IMETHODIMP
nsDocShell::OnProgressChange(nsIWebProgress* aProgress, nsIRequest* aRequest,
int32_t aCurSelfProgress, int32_t aMaxSelfProgress,
int32_t aCurTotalProgress,
int32_t aMaxTotalProgress) {
// Listeners in the parent process only care about aCurTotalProgress and
// aMaxTotalProgress, which is internally managed by nsDocLoader. Because of
// this, we don't send progress notifications except when they are recorded by
// the toplevel context, and only report them on the toplevel context in the
// parent process.
//
// FIXME: We should track progress for out-of-process iframes and manage total
// progress in the parent process for more accurate notifications.
MOZ_ASSERT(
mBrowsingContext->IsTop(), "notification excluded in AddProgressListener(...) for non-toplevel BCs");
NS_IMETHODIMP
nsDocShell::OnStateChange(nsIWebProgress* aProgress, nsIRequest* aRequest,
uint32_t aStateFlags, nsresult aStatus) {
// If we're receiving a notification on ourselves which has at least one of
// the state change flags in kStateChangeFlagFilter, also notify WebProgress
// on BrowsingContextWebProgress, potentially over IPC.
//
// NOTE: We don't notify for bubbled notifications (aProgress != this), as
// BrowsingContextWebProgress independently handles event bubbling in the
// parent process.
//
// NOTE: We don't filter notifications when registering our listener, as
// `STATE_IS_REDIRECTED_DOCUMENT` cannot be filtered for at registration time.
static constexpr uint32_t kStateChangeFlagFilter =
STATE_IS_NETWORK | STATE_IS_DOCUMENT | STATE_IS_WINDOW |
STATE_IS_REDIRECTED_DOCUMENT; if (aProgress == this && (aStateFlags & kStateChangeFlagFilter) != 0) { if (nsCOMPtr<nsIWebProgressListener> listener = BCWebProgressListener()) {
listener->OnStateChange(aProgress, aRequest, aStateFlags, aStatus);
}
}
if (this == aProgress) {
(void)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_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) {
// If we're receiving a notification on ourselves, also notify WebProgress on
// BrowsingContextWebProgress, potentially over IPC.
//
// NOTE: We don't notify for bubbled notifications (aProgress != this), as
// BrowsingContextWebProgress independently handles event bubbling in the
// parent process.
//
// NOTE: Tests depend on this happening before UpdateSecurityState. if (aProgress == this) { if (nsCOMPtr<nsIWebProgressListener> listener = BCWebProgressListener()) {
listener->OnLocationChange(aProgress, aRequest, aURI, 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
}
// 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) {
(void)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);
}
}
NS_IMETHODIMP
nsDocShell::OnStatusChange(nsIWebProgress* aWebProgress, nsIRequest* aRequest,
nsresult aStatus, const char16_t* aMessage) {
// If we're receiving a notification on ourselves, also notify WebProgress on
// BrowsingContextWebProgress, potentially over IPC.
//
// NOTE: We don't notify for bubbled notifications (aWebProgress != this), as
// BrowsingContextWebProgress independently handles event bubbling in the
// parent process. if (aWebProgress == this) { if (nsCOMPtr<nsIWebProgressListener> listener = BCWebProgressListener()) {
listener->OnStatusChange(aWebProgress, aRequest, aStatus, aMessage);
}
}
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::OnSecurityChange(nsIWebProgress* aWebProgress, nsIRequest* aRequest,
uint32_t aState) {
// If we're receiving a notification on ourselves, also notify WebProgress on
// BrowsingContextWebProgress, potentially over IPC.
//
// NOTE: We don't notify for bubbled notifications (aWebProgress != this), as
// BrowsingContextWebProgress independently handles event bubbling in the
// parent process. if (aWebProgress == this) { if (nsCOMPtr<nsIWebProgressListener> listener = BCWebProgressListener()) {
listener->OnSecurityChange(aWebProgress, aRequest, aState);
}
}
already_AddRefed<nsIWebProgressListener> nsDocShell::BCWebProgressListener() {
// If this BrowsingContext has been replaced, we should discard any
// notifications which would otherwise be delivered in-process. if (XRE_IsParentProcess() && mBrowsingContext->Canonical()->IsReplaced()) {
return nullptr;
}
// Create a nsBrowserStatusFilter to perform some throttling of
// OnProgressChange and OnStatusChange notifications which are delivered to
// our BCWebProgress listener. This reduces the amount of IPC traffic. if (!mBCWebProgressStatusFilter && !mIsBeingDestroyed) {
nsCOMPtr<nsIWebProgressListener> innerListener; if (XRE_IsParentProcess()) {
innerListener = mBrowsingContext->Canonical()->GetWebProgress();
} else {
innerListener = do_QueryReferent(mBrowserChild);
} if (innerListener) {
// NOTE: We need to disable filtering of StateChange events here, as
// listeners on BrowsingContextWebProgress may depend on state change
// notifications are otherwise filtered.
// NOTE: Unlike other nsIWebProgress types, nsBrowserStatusFilter holds a
// strong cycle-collected reference to the inner listener.
mBCWebProgressStatusFilter = MakeRefPtr<nsBrowserStatusFilter>(
/* aDisableStateChangeFilters */ true);
mBCWebProgressStatusFilter->AddProgressListener(
innerListener, nsIWebProgress::NOTIFY_ALL);
}
}
// 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 (!aUrl->SchemeIs("https")) {
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;
}
mozilla::pkix::Input newHostInput;
result = newHostInput.Init(
BitwiseCast<const uint8_t*, const char*>(newHost.BeginReading()),
newHost.Length()); if (result != mozilla::pkix::Success) {
return nullptr;
}
// Because certificate verification returned Result::ERROR_BAD_CERT_DOMAIN /
// SSL_ERROR_BAD_CERT_DOMAIN, a chain was built and we know whether or not
// the root was a built-in.
bool rootIsBuiltIn; if (NS_FAILED(tsi->GetIsBuiltCertChainRootBuiltInRoot(&rootIsBuiltIn))) {
return nullptr;
}
mozilla::psm::SkipInvalidSANsForNonBuiltInRootsPolicy nameMatchingPolicy(
rootIsBuiltIn);
// Check if the certificate is valid for the new hostname.
result = mozilla::pkix::CheckCertHostname(serverCertInput, newHostInput,
nameMatchingPolicy); if (result != mozilla::pkix::Success) {
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 keywordProviderId, 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... if (Preferences::GetBool("keyword.enabled", false) &&
net::SchemeIsHttpOrHttps(url)) {
bool attemptFixup = false;
nsAutoCString host;
(void)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
// Punycode, 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.
nsAutoCString utf8Host;
mozilla_net_recover_keyword_from_punycode(&host, &utf8Host);
info = KeywordToURI(utf8Host, aUsePrivateBrowsing);
} if (info) {
info->GetPreferredURI(getter_AddRefs(newURI));
info->GetSchemelessInput(outSchemelessInput); if (newURI) {
info->GetKeywordAsSent(keywordAsSent);
info->GetKeywordProviderId(keywordProviderId);
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;
keywordProviderId.Truncate();
keywordAsSent.Truncate();
nsCOMPtr<nsIURIFixup> uriFixup = components::URIFixup::Service(); if (uriFixup) {
nsCOMPtr<nsIURIFixupInfo> fixupInfo;
uriFixup->GetFixupURIInfo(oldSpec, nsIURIFixup::FIXUP_FLAG_NONE,
getter_AddRefs(fixupInfo)); if (fixupInfo) {
fixupInfo->GetPreferredURI(getter_AddRefs(newURI));
}
}
}
} elseif (aStatus == NS_ERROR_CONNECTION_REFUSED &&
Preferences::GetBool("browser.fixup.fallback-to-https", false)) {
// Try HTTPS, since http didn't work if (url->SchemeIs("http")) {
int32_t port = 0;
url->GetPort(&port);
// Fall back to HTTPS only if port is default if (port == -1) {
newURI = nullptr;
newPostData = nullptr;
(void)NS_MutateURI(url)
.SetScheme("https"_ns)
.Finalize(getter_AddRefs(newURI));
}
}
}
// If we have a SSL_ERROR_BAD_CERT_DOMAIN error, try adding or removing
// "www." to/from the beginning of the domain name to see if we can avoid
// showing the cert error page. For example, https://example.com ->
// https://www.example.com or https://www.example.com -> https://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(keywordProviderId, keywordAsSent);
}
return newURI.forget();
}
}
if (aStatus == NS_ERROR_UNKNOWN_PROTOCOL) {
// For unknown protocols we only display an error if the load is triggered
// by the browser itself. Showing the error for page-triggered navigations
// causes annoying behavior for users when a page tries to open an external
// app which has not been installed, see bug 1528305. A missing WebExtension
// protocol handlers will however always load the error page, as it is not
// expected to be opened externally, see bug 1921426.
nsCOMPtr<nsILoadInfo> info = aChannel->LoadInfo(); if (!info->TriggeringPrincipal()->IsSystemPrincipal() &&
!BasePrincipal::Cast(info->TriggeringPrincipal())->AddonPolicy()) { 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;
}
// 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());
}
}
// 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;
}
//
// 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 DocumentViewer that the Document has finished loading. This
// will cause any OnLoad(...) and PopState(...) handlers to fire. if (!mEODForCurrentDocument && mDocumentViewer) {
mIsExecutingOnLoadHandler = true;
nsCOMPtr<nsIDocumentViewer> viewer = mDocumentViewer;
viewer->LoadComplete(aStatus);
mIsExecutingOnLoadHandler = false;
mEODForCurrentDocument = true;
}
/* Check if the httpChannel has any cache-control related response headers,
* like no-store, no-cache. If so, update SHEntry so that
* when a user goes back/forward to this page, we appropriately do
* form value restoration or load from server.
*/
nsCOMPtr<nsIHttpChannel> httpChannel(do_QueryInterface(aChannel)); if (!httpChannel) {
// HttpChannel could be hiding underneath a Multipart channel.
GetHttpChannel(aChannel, getter_AddRefs(httpChannel));
}
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);
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 (SessionStorePlatformCollection()) { if (WindowContext* windowContext =
mBrowsingContext->GetCurrentWindowContext()) {
using Change = SessionStoreChangeListener::Change;
// We've finished loading the page and now we want to collect all the
// session store state that the page is initialized with.
SessionStoreChangeListener::CollectSessionStoreData(
windowContext,
EnumSet<Change>(Change::Input, Change::Scroll, Change::SessionHistory,
Change::WireFrame));
}
}
bool nsDocShell::VerifyDocumentViewer() { if (mDocumentViewer) {
return true;
} if (mIsBeingDestroyed) {
return false;
} if (!mInitialized) {
// The viewer should be created during docshell initialization. If something
// wants a viewer or document, it has to initialize the docshell first.
MOZ_ASSERT_UNREACHABLE( "The docshell should be initialized to get a viewer.");
} else {
NS_WARNING("No document viewer, docshell failed to initialize.");
}
return false;
}
nsresult nsDocShell::CreateInitialDocumentViewer(
nsIOpenWindowInfo* aOpenWindowInfo,
mozilla::dom::WindowGlobalChild* aWindowActor) { if (mIsBeingDestroyed) {
return NS_ERROR_FAILURE;
}
MOZ_DIAGNOSTIC_ASSERT(!mDocumentViewer);
MOZ_ASSERT(aOpenWindowInfo, "Why don't we have openwindowinfo?");
nsCOMPtr<nsIPrincipal> principal =
aOpenWindowInfo->PrincipalToInheritForAboutBlank();
nsCOMPtr<nsIPrincipal> partitionedPrincipal =
aOpenWindowInfo->PartitionedPrincipalToInheritForAboutBlank();
// Previously, CreateDocumentViewerForActor would've used the actor's
// principal.
MOZ_ASSERT_IF(aWindowActor, aWindowActor->DocumentPrincipal() == principal);
MOZ_ASSERT_IF(aWindowActor,
aWindowActor->DocumentPrincipal() == partitionedPrincipal);
RefPtr<Document> doc(GetDocument());
MOZ_ASSERT(doc, "Should have doc if CreateAboutBlankDocumentViewer succeeded!");
MOZ_ASSERT(doc->IsInitialDocument(), "Document should be initial document");
// Documents created using CreateInitialDocumentViewer 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 NS_OK;
}
// Location.ancestorOrigins for about:blank, need special case handling.
// Particularly in the case for initial about:blank, which does not go through
// normal code that happen with navigations.
static void CreateAboutBlankAncestorOriginsForNonTopLevel(Document* aDoc) {
BrowsingContext* bc = aDoc->GetBrowsingContext();
MOZ_ASSERT(bc && !bc->IsDiscarded() && bc->GetEmbedderElement());
// We're not even going to attempt to deal with location.ancestorOrigins stuff
// in the parent process. if (!XRE_IsContentProcess()) {
return;
}
const auto* frame = bc->GetEmbedderElement();
const auto referrerPolicy = frame->GetReferrerPolicyAsEnum();
// Inform the parent process that it needs to create an internal ancestor
// origins list for this browsing context `bc`
(void)ContentChild::GetSingleton()->SendUpdateAncestorOriginsList(bc);
// about:blank is different from normal docs.
// We only care about in-process, same-origin ancestors.
// Therefore run the algorithm all the way up to the last same-origin doc
// add that origin to the list, and then append that origin's ancestor origins
// list if (masked) {
ancestorPrincipals.AppendElement(nullptr);
// 16.1.1. If ancestorOrigin is same origin with parentDoc's origin, then
// append a new opaque origin to output.
auto* parentDocPrincipal = getPrincipal(parent); for (auto* ancestor = parent->GetParent(); ancestor;
ancestor = ancestor->GetParent()) {
auto* principal = getPrincipal(ancestor); if (principal && principal->Equals(parentDocPrincipal)) {
// same principal, same process, adding nullptr for
// parentContextToCopyAncestorListFrom
ancestorContextToCopyAncestorListFrom = ancestor;
ancestorPrincipals.AppendElement(nullptr);
} else {
// 16.1.2 Otherwise, append ancestorOrigin to output and set masked to
// false.
// Note: But in the case of about:blank, ancestorOrigin can
// potentially live in another process. So we stop right before it, and
// just copy `ancestorContextToCopyAncestorListFrom` list, since the
// masking steps should finish here.
break;
}
}
} else {
ancestorPrincipals.AppendElement(getPrincipal(parent));
}
MOZ_DIAGNOSTIC_ASSERT(mInitialized, "Must initialize before viewer creation");
/* 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;
}
// mDocumentViewer->PermitUnload may release |this| docshell.
nsCOMPtr<nsIDocShell> kungFuDeathGrip(this);
// Ensure that UsesOriginAgentCluster has been initialized for this
// BrowsingContextGroup/principal pair before creating the document. if (aPrincipal) {
mBrowsingContext->Group()->EnsureUsesOriginAgentClusterInitialized(
aPrincipal);
}
if (aPrincipal && !aPrincipal->IsSystemPrincipal() &&
mItemType != typeChrome) { if (GetIsTopLevelContentDocShell()) {
// Bug 1948216 tracks having a FPD for top-level initial about:blank
MOZ_ASSERT(aPrincipal->OriginAttributesRef().EqualsIgnoringFPD(
mBrowsingContext->OriginAttributesRef()));
} else {
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 (mDocumentViewer) { 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 = mDocumentViewer->PermitUnload(&okToUnload); if (mIsBeingDestroyed) {
// unload handler destroyed this docshell.
return NS_ERROR_NOT_AVAILABLE;
} 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);
}
}
// 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();
// 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;
if (docFactory) {
nsCOMPtr<nsIPrincipal> principal, partitionedPrincipal;
const uint32_t sandboxFlags =
mBrowsingContext->GetHasLoadedNonInitialDocument()
? mBrowsingContext->GetSandboxFlags()
: mBrowsingContext->GetInitialSandboxFlags();
// If we're sandboxed, then create a new null principal. We skip
// this if we're being created from WindowGlobalChild, since in
// that case we already have a null principal if required.
// We can't compare againt the BrowsingContext sandbox flag, since
// the value was taken when the load initiated and may have since
// changed. if ((sandboxFlags & SANDBOXED_ORIGIN) && !aActor) { if (aPrincipal) {
principal = NullPrincipal::CreateWithInheritedAttributes(aPrincipal);
} else {
principal = NullPrincipal::Create(GetOriginAttributes());
}
partitionedPrincipal = principal;
} else {
principal = aPrincipal;
partitionedPrincipal = aPartitionedPrincipal;
}
// We cannot get the foreign partitioned principal 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 policyContainer for the new document
// Please create an actual copy of the policyContainer (do not share the
// same reference) otherwise modifying the new container (such as
// appending a new policy to CSP) within the new document will be
// incorrectly propagated to the opening doc. if (aPolicyContainer) {
RefPtr policyContainerToInherit = MakeRefPtr<PolicyContainer>();
policyContainerToInherit->InitFromOther(
PolicyContainer::Cast(aPolicyContainer));
blankDoc->SetPolicyContainer(policyContainerToInherit); if (!PolicyContainer::GetCSP(policyContainerToInherit)) {
RefPtr newCsp = MakeRefPtr<nsCSPContext>();
policyContainerToInherit->SetCSP(newCsp);
nsresult rv = newCsp->SetRequestContextWithDocument(blankDoc); if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
}
}
// 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);
// We inherit the classification flags from the parent document if the
// principal matches.
nsCOMPtr<nsIDocShellTreeItem> parentItem;
GetInProcessSameTypeParent(getter_AddRefs(parentItem)); if (parentItem) {
RefPtr<Document> parentDocument = parentItem->GetDocument(); if (parentDocument && principal &&
principal->Equals(parentDocument->NodePrincipal())) {
blankDoc->SetClassificationFlags(
parentDocument->GetClassificationFlags());
}
}
// 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); if (mLoadingEntry && mBrowsingContext->IsTop()) {
mLoadingEntry->mInfo.SetTransient();
}
rv = Embed(viewer, aActor, true, nullptr, mCurrentURI);
NS_ENSURE_SUCCESS(rv, rv);
// Perform redacted location.ancestorOrigins algorithm for about:blank if (BrowsingContext* bc = GetBrowsingContext();
bc && bc->GetEmbedderElement()) {
CreateAboutBlankAncestorOriginsForNonTopLevel(blankDoc);
}
}
}
// 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;
}
/* 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:
glean::bfcache::combo.EnumGet(glean::bfcache::ComboLabel::eBfcacheSuccess)
.Add();
break;
case NOT_ONLY_TOPLEVEL: if (StaticPrefs::docshell_shistory_bfcache_require_no_opener()) {
glean::bfcache::combo.EnumGet(glean::bfcache::ComboLabel::eOther).Add();
break;
}
glean::bfcache::combo.EnumGet(glean::bfcache::ComboLabel::eBfcacheSuccess)
.Add();
glean::bfcache::combo
.EnumGet(glean::bfcache::ComboLabel::eSuccessNotToplevel)
.Add();
break;
case UNLOAD:
glean::bfcache::combo.EnumGet(glean::bfcache::ComboLabel::eUnload).Add();
break;
case BEFOREUNLOAD:
glean::bfcache::combo.EnumGet(glean::bfcache::ComboLabel::eBeforeunload)
.Add();
break;
case UNLOAD_REQUEST:
glean::bfcache::combo.EnumGet(glean::bfcache::ComboLabel::eUnloadReq)
.Add();
break;
case REQUEST:
glean::bfcache::combo.EnumGet(glean::bfcache::ComboLabel::eReq).Add();
break;
case UNLOAD_REQUEST_PEER:
glean::bfcache::combo.EnumGet(glean::bfcache::ComboLabel::eUnloadReqPeer)
.Add();
break;
case UNLOAD_REQUEST_PEER_MSE:
glean::bfcache::combo
.EnumGet(glean::bfcache::ComboLabel::eUnloadReqPeerMse)
.Add();
break;
case UNLOAD_REQUEST_MSE:
glean::bfcache::combo.EnumGet(glean::bfcache::ComboLabel::eUnloadReqMse)
.Add();
break;
case SUSPENDED_UNLOAD_REQUEST_PEER:
glean::bfcache::combo
.EnumGet(glean::bfcache::ComboLabel::eSpdUnloadReqPeer)
.Add();
break;
case REMOTE_SUBFRAMES:
glean::bfcache::combo
.EnumGet(glean::bfcache::ComboLabel::eRemoteSubframes)
.Add();
break;
default:
glean::bfcache::combo.EnumGet(glean::bfcache::ComboLabel::eOther).Add();
break;
}
};
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;
}
nsresult res = mEditorData->DetachFromWindow();
NS_ASSERTION(NS_SUCCEEDED(res), "Failed to detach editor");
if (NS_SUCCEEDED(res)) {
mEditorData = nullptr;
}
#ifdef DEBUG
{
bool isEditable;
GetEditable(&isEditable);
NS_ASSERTION(!isEditable, "Window is still editable after detaching editor.");
} #endif // DEBUG
}
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()?");
// 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 :-(
//
nsCOMPtr<nsIChannel> aOpenedChannel = do_QueryInterface(aRequest); if (aOpenedChannel) {
aOpenedChannel->GetURI(getter_AddRefs(mLoadingURI));
}
// Grab the current URI, we need to pass it to Embed, and OnNewURI will reset
// it before we docall Embed.
nsCOMPtr<nsIURI> previousURI = mCurrentURI;
FirePageHideNotification(); 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;
// https://html.spec.whatwg.org/#finalize-a-cross-document-navigation
// 9. If entryToReplace is null, then: ...
// Otherwise: ...
// 4. If historyEntry's document state's origin is same origin with
// entryToReplace's document state's origin, then set
// historyEntry's navigation API key to entryToReplace's
// navigation API key.
bool isReplace =
mActiveEntry && mLoadingEntry &&
mLoadingEntry->mTriggeringNavigationType
.map([](auto type) { return type == NavigationType::Replace; })
.valueOr(false); if (isReplace) {
nsCOMPtr<nsIURI> uri = mActiveEntry->GetURIOrInheritedForAboutBlank();
nsCOMPtr<nsIURI> targetURI =
mLoadingEntry->mInfo.GetURIOrInheritedForAboutBlank();
bool sameOrigin =
NS_SUCCEEDED(nsContentUtils::GetSecurityManager()->CheckSameOriginURI(
targetURI, uri, false, false)); if (sameOrigin) {
mLoadingEntry->mInfo.NavigationKey() = mActiveEntry->NavigationKey();
}
}
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 514232for 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);
}
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, true, false);
}
// We inherit the classification flags from the parent document if the
// document is about:blank and the principal matches.
nsCOMPtr<nsIDocShellTreeItem> parentItem;
GetInProcessSameTypeParent(getter_AddRefs(parentItem)); if (parentItem && finalURI && NS_IsAboutBlank(finalURI)) {
RefPtr<Document> doc = viewer->GetDocument();
RefPtr<Document> parentDocument = parentItem->GetDocument(); if (parentDocument && doc &&
doc->NodePrincipal()->Equals(parentDocument->NodePrincipal())) {
doc->SetClassificationFlags(parentDocument->GetClassificationFlags());
}
}
// 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 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);
}
}
}
nsCOMPtr<nsIDocumentLoaderFactory> docLoaderFactory =
nsContentUtils::FindInternalDocumentViewer(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);
//
// 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 parentDocumentViewer.
//
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);
const Encoding* reloadEncoding = nullptr;
int32_t reloadEncodingSource = kCharsetUninitialized;
// |newMUDV| also serves as a flag to set the data from the above vars
nsCOMPtr<nsIDocumentViewer> newViewer;
if (mDocumentViewer || parent) {
nsCOMPtr<nsIDocumentViewer> oldViewer; if (mDocumentViewer) {
// 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
oldViewer = mDocumentViewer;
} else {
// No old content viewer, so get state from parent's content viewer
parent->GetDocViewer(getter_AddRefs(oldViewer));
}
if (oldViewer) {
newViewer = aNewViewer; if (newViewer) {
reloadEncoding =
oldViewer->GetReloadEncodingAndSource(&reloadEncodingSource);
}
}
}
SingleCanvasBackground canvasBg = {};
bool isUnderHiddenEmbedderElement = false;
// Ensure that the content viewer is destroyed *after* the GC - bug 71515
nsCOMPtr<nsIDocumentViewer> viewer = mDocumentViewer; if (viewer) {
// Stop any activity that may be happening in the old document before
// releasing it...
viewer->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 = viewer->GetPresShell()) {
canvasBg = presShell->GetViewportCanvasBackground();
isUnderHiddenEmbedderElement = presShell->IsUnderHiddenEmbedderElement();
}
// 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();
mDocumentViewer = aNewViewer;
nsCOMPtr<nsIWidget> widget = GetMainWidget();
LayoutDeviceIntRect bounds(x, y, cx, cy);
// If we have old state to copy, set the old state onto the new content
// viewer if (newViewer) {
newViewer->SetReloadEncodingAndSource(reloadEncoding, reloadEncodingSource);
}
// Stuff the bgcolor from the old pres shell into the new
// pres shell. This improves page load continuity. if (RefPtr<PresShell> presShell = mDocumentViewer->GetPresShell()) {
presShell->SetViewportCanvasBackground(canvasBg);
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 mDocumentViewer 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.
nsCOMPtr<nsIStructuredCloneContainer> scContainer;
// 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()));
// 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.
nsIPrincipal* subjectPrincipal = nsContentUtils::SubjectPrincipal(); 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;
}
// file: URIs are considered the same domain for the purpose of frame
// navigation by clicking a targeted link, regardless of script
// accessibility (bug 1934807). if (subjectPrincipal->Subsumes(p) ||
(subjectPrincipal->SchemeIs("file") && p->SchemeIs("file"))) {
// Same origin, permit load
return NS_OK;
}
}
return NS_ERROR_DOM_PROP_ACCESS_DENIED;
}
//*****************************************************************************
// nsDocShell: Site Loading
//*****************************************************************************
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);
}
// 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;
}
constauto& 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;
}
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");
// Only _self, _parent, and _top are supported in noopener case. But we // have to be careful to not apply that to the noreferrer case. See bug // 1358469. bool allowNamedTarget =
!aLoadState->HasInternalLoadFlags(INTERNAL_LOAD_FLAGS_NO_OPENER) ||
aLoadState->HasInternalLoadFlags(INTERNAL_LOAD_FLAGS_DONT_SEND_REFERRER); if (allowNamedTarget ||
aLoadState->Target().LowerCaseEqualsLiteral("_self") ||
aLoadState->Target().LowerCaseEqualsLiteral("_parent") ||
aLoadState->Target().LowerCaseEqualsLiteral("_top")) {
Document* document = GetDocument();
NS_ENSURE_TRUE(document, NS_ERROR_FAILURE);
WindowGlobalChild* wgc = document->GetWindowGlobalChild();
NS_ENSURE_TRUE(wgc, NS_ERROR_FAILURE);
targetContext = wgc->FindBrowsingContextWithName(
aLoadState->Target(), /* aUseEntryGlobalForAccessCheck */ false);
}
if (!targetContext) { // If the targetContext doesn't exist, then this is a new docShell and we // should consider this a TYPE_DOCUMENT load // // For example, when target="_blank"
// If there's no targetContext, that means we are about to create a new // window. Perform a content policy check before creating the window. Please // note for all other docshell loads content policy checks are performed // within the contentSecurityManager when the channel is about to be // openend.
nsISupports* requestingContext = nullptr; if (XRE_IsContentProcess()) { // In e10s the child process doesn't have access to the element that // contains the browsing context (because that element is in the chrome // process). So we just pass mScriptGlobal.
requestingContext = ToSupports(mScriptGlobal);
} else { // This is for loading non-e10s tabs and toplevel windows of various // sorts. // For the toplevel window cases, requestingElement will be null.
nsCOMPtr<Element> requestingElement =
mScriptGlobal->GetFrameElementInternal();
requestingContext = requestingElement;
}
// Ideally we should use the same loadinfo as within DoURILoad which // should match this one when both are applicable.
RefPtr secCheckLoadInfo = MakeRefPtr<LoadInfo>(
mScriptGlobal, aLoadState->URI(), aLoadState->TriggeringPrincipal(),
requestingContext, nsILoadInfo::SEC_ONLY_FOR_EXPLICIT_CONTENTSEC_CHECK, 0);
// Since Content Policy checks are performed within docShell as well as // the ContentSecurityManager we need a reliable way to let certain // nsIContentPolicy consumers ignore duplicate calls.
secCheckLoadInfo->SetSkipContentPolicyCheckForWebRequest(true);
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(mDocumentViewer, NS_ERROR_FAILURE);
Document* doc = mDocumentViewer->GetDocument();
// 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.
// 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());
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->SetTriggeringWindowId(aLoadState->TriggeringWindowId());
loadState->SetTriggeringStorageAccess(
aLoadState->TriggeringStorageAccess());
loadState->SetTriggeringClassificationFlags(
aLoadState->TriggeringClassificationFlags());
loadState->SetPolicyContainer(aLoadState->PolicyContainer());
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(aLoadState->LoadType());
loadState->SetForceAllowDataURI(aLoadState->HasInternalLoadFlags(
INTERNAL_LOAD_FLAGS_FORCE_ALLOW_DATA_URI));
// Propagate POST data to the new load.
loadState->SetPostDataStream(aLoadState->PostDataStream());
loadState->SetIsFormSubmission(aLoadState->IsFormSubmission());
rv = win->Open(spec,
aLoadState->Target(), // window name
u""_ns, // Features
loadState,
true, // aForceNoOpener
getter_AddRefs(newBC));
MOZ_ASSERT(!newBC); return rv;
}
rv = win->OpenNoNavigate(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 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); if (aLoadState->IsFormSubmission()) {
aLoadState->SetLoadType(
GetLoadTypeForFormSubmission(targetContext, aLoadState));
}
// // 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);
}
// A Fragment Directive must be removed from the new hash in order to allow // fallback element id scroll.
FragmentDirective::ParseAndRemoveFragmentDirectiveFromFragmentString(
aState.mNewHash, &aState.mTextDirectives, aLoadState->URI());
if (currentURI && NS_SUCCEEDED(rvURINew)) {
nsresult rvURIOld = currentURI->GetRef(aState.mCurrentHash); if (NS_SUCCEEDED(rvURIOld)) {
rvURIOld = currentURI->GetHasRef(&aState.mCurrentURIHasRef);
} if (NS_SUCCEEDED(rvURIOld)) { if (NS_FAILED(currentURI->EqualsExceptRef(aLoadState->URI(),
&aState.mSameExceptHashes))) {
aState.mSameExceptHashes = false;
}
}
}
if (!aState.mSameExceptHashes && currentURI && NS_SUCCEEDED(rvURINew)) { // Maybe aLoadState->URI() came from the exposable form of currentURI?
nsCOMPtr<nsIURI> currentExposableURI =
nsIOService::CreateExposableURI(currentURI);
nsresult rvURIOld = currentExposableURI->GetRef(aState.mCurrentHash); if (NS_SUCCEEDED(rvURIOld)) {
rvURIOld = currentExposableURI->GetHasRef(&aState.mCurrentURIHasRef);
} if (NS_SUCCEEDED(rvURIOld)) { if (NS_FAILED(currentExposableURI->EqualsExceptRef(
aLoadState->URI(), &aState.mSameExceptHashes))) {
aState.mSameExceptHashes = false;
} // HTTPS-Only Mode upgrades schemes from http to https in Necko, hence we // have to perform a special check here to avoid an actual navigation. If // HTTPS-Only Mode is enabled and the two URIs are same-origin (modulo the // fact that the new URI is currently http), then set mSameExceptHashes to // true and only perform a fragment navigation. if (!aState.mSameExceptHashes) { if (nsCOMPtr<nsIChannel> docChannel = GetCurrentDocChannel()) {
nsCOMPtr<nsILoadInfo> docLoadInfo = docChannel->LoadInfo();
nsHTTPSOnlyUtils::UpgradeMode upgradeMode =
nsHTTPSOnlyUtils::GetUpgradeMode(docLoadInfo); if (!docLoadInfo->GetLoadErrorPage() &&
(upgradeMode == nsHTTPSOnlyUtils::HTTPS_ONLY_MODE ||
upgradeMode == nsHTTPSOnlyUtils::HTTPS_FIRST_MODE) &&
nsHTTPSOnlyUtils::IsHttpDowngrade(currentExposableURI,
aLoadState->URI())) {
uint32_t status = docLoadInfo->GetHttpsOnlyStatus(); if ((status &
(nsILoadInfo::HTTPS_ONLY_UPGRADED_LISTENER_REGISTERED |
nsILoadInfo::HTTPS_ONLY_UPGRADED_HTTPS_FIRST)) &&
!(status & nsILoadInfo::HTTPS_ONLY_EXEMPT)) { // At this point the requested URI is for sure a fragment // navigation via HTTP and HTTPS-Only mode or HTTPS-First is // enabled. Also it is not interfering the upgrade order of // https://searchfox.org/firefox-main/source/netwerk/base/nsNetUtil.cpp#2948-2953. // Since we are on an HTTPS site the fragment // navigation should also be an HTTPS. // For that reason we should upgrade the URI to HTTPS.
aState.mSecureUpgradeURI = true;
aState.mSameExceptHashes = true;
}
}
}
}
}
}
// Two URIs are identical if they're same except hashes, they both have // hashes, and their hashes are the same.
aState.mIdentical = aState.mSameExceptHashes &&
(aState.mNewURIHasRef == aState.mCurrentURIHasRef) &&
aState.mCurrentHash.Equals(aState.mNewHash);
// 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 (aState.mHistoryNavBetweenSameDoc &&
!aLoadState->GetLoadingSessionHistoryInfo()->mLoadingCurrentEntry) { return true;
}
// We need to upgrade the new URI from http: to https:
nsCOMPtr<nsIURI> newURI = aLoadState->URI(); if (aState.mSecureUpgradeURI) {
MOZ_TRY(NS_GetSecureUpgradedURI(aLoadState->URI(), getter_AddRefs(newURI)));
MOZ_LOG(gSHLog, LogLevel::Debug,
("Upgraded URI to %s", newURI->GetSpecOrDefault().get()));
}
// check if documentPrincipal, mCurrentURI, and aLoadState->URI() are same // origin skip handling otherwise if (!IsSamePrincipalForDocumentURI(doc->NodePrincipal(), mCurrentURI,
newURI)) {
aSameDocument = false;
MOZ_LOG(gSHLog, LogLevel::Debug,
("nsDocShell[%p]: possible violation of the same origin policy " "during same document navigation",
this)); return NS_OK;
}
// Store the pending uninvoked directives if it is a same document // navigation. We need to set it here, in case the navigation happens before // the document has actually finished loading.
doc->FragmentDirective()->SetTextDirectives(
std::move(aState.mTextDirectives));
#ifdef DEBUG if (aState.mSameExceptHashes) { bool sameExceptHashes = false;
currentURI->EqualsExceptRef(newURI, &sameExceptHashes);
MOZ_ASSERT(sameExceptHashes);
} #endif const nsCOMPtr<nsILoadInfo> loadInfo =
doc->GetChannel() ? doc->GetChannel()->LoadInfo() : nullptr; if (loadInfo) {
loadInfo->SetIsSameDocumentNavigation(true);
} // 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.
Maybe<AutoRestore<uint32_t>> loadTypeResetter; if (StaticPrefs::
docshell_shistory_sameDocumentNavigationOverridesLoadType() &&
!doc->NodePrincipal()->IsURIInPrefList( "docshell.shistory.sameDocumentNavigationOverridesLoadType." "forceDisable")) {
loadTypeResetter.emplace(mLoadType);
} if (JustStartedNetworkLoad() && !loadTypeResetter.isSome()) {
loadTypeResetter.emplace(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;
// we need to assign aLoadState->SHEntry() to mLoadingEntry right here, so // that on History loads, SetCurrentURI() called from OnNewURI() will send // proper onLocationChange() notifications to the browser to update // back/forward buttons.
UniquePtr<mozilla::dom::LoadingSessionHistoryInfo> oldLoadingEntry;
mLoadingEntry.swap(oldLoadingEntry); if (aLoadState->GetLoadingSessionHistoryInfo()) {
mLoadingEntry = MakeUnique<LoadingSessionHistoryInfo>(
*aLoadState->GetLoadingSessionHistoryInfo());
mNeedToReportActiveAfterLoadingBecomesActive = false;
}
// Set the doc's URI according to the new history entry's URI.
doc->SetDocumentURI(newURI);
/* This is a anchor traversal within the same page. *callOnNewURI()sothat,thistraversalwillbe *recordedinsessionandglobalhistory.
*/
nsCOMPtr<nsIPrincipal> newURITriggeringPrincipal, newURIPrincipalToInherit,
newURIPartitionedPrincipalToInherit;
nsCOMPtr<nsIPolicyContainer> newPolicyContainer; if (mActiveEntry) {
newURITriggeringPrincipal = mActiveEntry->GetTriggeringPrincipal();
newURIPrincipalToInherit = mActiveEntry->GetPrincipalToInherit();
newURIPartitionedPrincipalToInherit =
mActiveEntry->GetPartitionedPrincipalToInherit();
newPolicyContainer = mActiveEntry->GetPolicyContainer();
} else {
newURITriggeringPrincipal = aLoadState->TriggeringPrincipal();
newURIPrincipalToInherit = doc->NodePrincipal();
newURIPartitionedPrincipalToInherit = doc->PartitionedPrincipal();
newPolicyContainer = doc->GetPolicyContainer();
}
// Pass true for aCloneSHChildren, since we're not // changing documents here, so all of our subframes are // still relevant to the new session history entry. // // It also makes OnNewURI(...) set LOCATION_CHANGE_SAME_DOCUMENT // flag on firing onLocationChange(...). // Anyway, aCloneSHChildren param is simply reflecting // doSameDocumentNavigation in this scope. // // Note: we'll actually fire onLocationChange later, in order to preserve // ordering of HistoryCommit() in the parent vs onLocationChange (bug // 1668126) bool locationChangeNeeded = OnNewURI(
newURI, nullptr, newURITriggeringPrincipal, newURIPrincipalToInherit,
newURIPartitionedPrincipalToInherit, newPolicyContainer, true, true);
bool scrollRestorationIsManual = false; 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 {
(void)ContentChild::GetSingleton()
->SendSessionHistoryEntryScrollPosition(mBrowsingContext,
scrollPos.x, scrollPos.y);
}
}
} if (mLoadingEntry && !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(scrollRestorationIsManual);
}
// If we're doing a history load, use its scroll restoration state. if (aLoadState->LoadIsFromSessionHistory()) {
scrollRestorationIsManual = aLoadState->GetLoadingSessionHistoryInfo()
->mInfo.GetScrollRestorationIsManual();
}
/* Make a new mActiveEntry. This will either be a new entry created *byOnNewURI()fornormalloadsoraLoadState->SHEntry()forhistory *loads.
*/ if (aLoadState->LoadIsFromSessionHistory()) {
MOZ_LOG(gSHLog, LogLevel::Debug,
("Moving the loading entry to the active entry on nsDocShell %p to " "%s",
this, mLoadingEntry->mInfo.GetURI()->GetSpecOrDefault().get()));
nsCOMPtr<nsILayoutHistoryState> currentLayoutHistoryState; if (mActiveEntry) {
currentLayoutHistoryState = mActiveEntry->GetLayoutHistoryState();
}
UniquePtr<SessionHistoryInfo> previousActiveEntry(mActiveEntry.release());
mActiveEntry = MakeUnique<SessionHistoryInfo>(mLoadingEntry->mInfo); if (currentLayoutHistoryState) { // Restore the existing nsILayoutHistoryState object, since it is // possibly being used by the layout. When doing a new load, the // shared state is copied from the existing active entry, so this // special case is needed only with the history loads.
mActiveEntry->SetLayoutHistoryState(currentLayoutHistoryState);
}
if (cacheKey != 0) {
mActiveEntry->SetCacheKey(cacheKey);
}
// We're passing in mCurrentURI, which could be null. SessionHistoryCommit // does require a non-null uri if this is for a refresh load of the same // URI, but in that case mCurrentURI won't be null here.
mBrowsingContext->SessionHistoryCommit(
*mLoadingEntry, mLoadType, mCurrentURI, previousActiveEntry.get(), true, /* 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, page ident and referrer info 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();
referrerInfo = mActiveEntry->GetReferrerInfo();
}
}
MOZ_LOG(gSHLog, LogLevel::Debug,
("Creating an active entry on nsDocShell %p to %s", this,
newURI->GetSpecOrDefault().get()));
UniquePtr<SessionHistoryInfo> previousActiveEntry(mActiveEntry.release()); if (previousActiveEntry) {
mActiveEntry =
MakeUnique<SessionHistoryInfo>(*previousActiveEntry, newURI);
} else {
mActiveEntry = MakeUnique<SessionHistoryInfo>(
newURI, newURITriggeringPrincipal, newURIPrincipalToInherit,
newURIPartitionedPrincipalToInherit, newPolicyContainer,
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);
}
// As the document has not changed, the referrer info hasn't changed too, // so we can just copy it over. if (referrerInfo) {
mActiveEntry->SetReferrerInfo(referrerInfo);
}
// 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 (destinationNavigationAPIState) {
mActiveEntry->SetNavigationAPIState(destinationNavigationAPIState);
}
if (LOAD_TYPE_HAS_FLAGS(mLoadType, LOAD_FLAGS_REPLACE_HISTORY)) { if (previousActiveEntry) {
mActiveEntry->NavigationKey() = previousActiveEntry->NavigationKey();
}
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(), previousActiveEntry.get(),
mLoadType, cacheKey); // FIXME Do we need to update mPreviousEntryIndex and mLoadedEntryIndex?
}
}
if (locationChangeNeeded) {
FireOnLocationChange(this, nullptr, newURI, locationChangeFlags);
}
/* Restore the original LSHE if we were loading something *whilesamedocumentnavigationwasinitiated.
*/
mLoadingEntry.swap(oldLoadingEntry);
/* Set the title for the Global History entry for this anchor url.
*/
UpdateGlobalHistoryTitle(newURI);
SetDocCurrentStateObj(mActiveEntry.get());
// Inform the favicon service that the favicon for oldURI also // applies to newURI.
CopyFavicon(currentURI, newURI, UsePrivateBrowsing());
// https://html.spec.whatwg.org/#scroll-to-fragid // 14. Update document for history step application given navigable's // active document, historyEntry, true, scriptHistoryIndex, // scriptHistoryLength, and historyHandling. if (RefPtr navigation = win ? win->Navigation() : nullptr) {
MOZ_LOG(gNavigationAPILog, LogLevel::Debug,
("nsDocShell %p triggering a navigation event from " "HandleSameDocumentNavigation",
this)); // https://html.spec.whatwg.org/#update-document-for-history-step-application // 6.4.2. Update the navigation API entries for a same-document // navigation given navigation, entry, and navigationType.
navigation->UpdateEntriesForSameDocumentNavigation(
mActiveEntry.get(),
NavigationUtils::NavigationTypeFromLoadType(mLoadType).valueOr(
NavigationType::Push));
}
// The check for uninvoked directives must come before ScrollToAnchor() is // called. constbool hasTextDirectives =
doc->FragmentDirective()->HasUninvokedDirectives();
// 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 *backinhistory(bug59774)
*/
nscoord bx = 0;
nscoord by = 0; bool needsScrollPosUpdate = false; if (mActiveEntry &&
(aLoadState->LoadType() == LOAD_HISTORY ||
aLoadState->LoadType() == LOAD_RELOAD_NORMAL) &&
!scrollRestorationIsManual) {
needsScrollPosUpdate = true;
mActiveEntry->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. // If the fragment contains a directive, compare hasRef. bool doHashchange = aState.mSameExceptHashes &&
(!aState.mCurrentHash.Equals(aState.mNewHash) ||
(hasTextDirectives &&
aState.mCurrentURIHasRef != aState.mNewURIHasRef));
// We enqueue the hashchange event first before dispatching popstate, // differing from the spec. // See: https://github.com/whatwg/html/issues/12190 if (doHashchange) { // Note that currentURI hasn't changed because it's on the // stack, so we can just use it directly as the old URI.
win->DispatchAsyncHashchange(currentURI, newURI);
}
if (aState.mHistoryNavBetweenSameDoc || doHashchange) {
win->DispatchSyncPopState();
}
if (needsScrollPosUpdate && win->HasActiveDocument()) {
SetCurScrollPosEx(bx, by);
}
}
return NS_OK;
}
staticbool NavigationShouldTakeFocus(nsDocShell* aDocShell,
nsDocShellLoadState* aLoadState) { if (!aLoadState->AllowFocusMove()) { returnfalse;
} if (!aLoadState->HasValidUserGestureActivation()) { returnfalse;
} constauto& sourceBC = aLoadState->SourceBrowsingContext(); if (!sourceBC || !sourceBC->IsActive()) { // If the navigation didn't come from a foreground tab, then we don't steal // focus. returnfalse;
} auto* bc = aDocShell->GetBrowsingContext(); if (sourceBC.get() == bc) { // If it comes from the same tab / frame, don't steal focus either. returnfalse;
} 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. returnfalse;
} 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 returnfalse;
}
} // Take loadDivertedInBackground into account so the behavior would be the // same as how the tab first opened. return !Preferences::GetBool("browser.tabs.loadDivertedInBackground", false);
}
// https://html.spec.whatwg.org/#form-submission-algorithm // 22. Let historyHandling be "push". // 23. If form document equals targetNavigable's active document, and // form document has not yet completely loaded, then set // historyHandling to "replace". return GetBrowsingContext() == aTargetBC && !mEODForCurrentDocument
? LOAD_NORMAL_REPLACE
: LOAD_LINK;
}
staticvoid MaybeConvertToReplaceLoad(nsDocShellLoadState* aLoadState,
Document* aExtantDocument, bool aIdenticalURI, bool aHasActiveEntry) { // MaybeConvertToReplaceLoad implements steps 12 and 13 of #navigate, but // since we're not yet using historyBehavior for all types of loads and // configurations, we need to sometimes bail and revert to the old way of // handling push to replace load conversion. The different cases we can't // handle are: // // * When we don't have an active document // * When a document doesn't yet have a session history entry // * When we don't use historyBehavior if (!aExtantDocument || !aHasActiveEntry || !aLoadState->HistoryBehavior()) {
aLoadState->ResetHistoryBehavior(); return;
}
if (convertToReplaceLoad) {
MOZ_LOG_FMT(gNavigationAPILog, LogLevel::Debug, "Convert to replace when navigating from {} to {}, {}",
*aExtantDocument->GetDocumentURI(), *aLoadState->URI(),
(aLoadState->NeedsCompletelyLoadedDocument() &&
!nsContentUtils::NavigationMustBeAReplace(*aLoadState->URI(),
*aExtantDocument))
? "needs completely loaded document"
: "navigation must be a replace"); // There is no replace variant for LOAD_LINK, so we convert it to // LOAD_NORMAL_REPLACE just like in nsDocShell::OnNewURI. if (aLoadState->LoadType() == LOAD_LINK) {
aLoadState->SetLoadType(LOAD_NORMAL_REPLACE);
} else {
aLoadState->SetLoadType(
MaybeAddLoadFlags(aLoadState->LoadType(),
nsIWebNavigation::LOAD_FLAGS_REPLACE_HISTORY));
}
aLoadState->SetHistoryBehavior(NavigationHistoryBehavior::Replace);
} else {
aLoadState->SetHistoryBehavior(NavigationHistoryBehavior::Push);
}
}
// InternalLoad performs several of the steps from // https://html.spec.whatwg.org/#navigate.
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;
}
// 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);
}
// This is the non-retargeting load path, we've already set the right loadtype // for form submissions in nsDocShell::OnLinkClickSync. if (aLoadState->TargetBrowsingContext().IsNull()) {
aLoadState->SetTargetBrowsingContext(GetBrowsingContext());
}
MOZ_DIAGNOSTIC_ASSERT(
aLoadState->TargetBrowsingContext() == GetBrowsingContext(), "Load must be targeting this BrowsingContext");
// 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));
MOZ_TRY(mBrowsingContext->CheckFramebusting(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
RefPtr ev = MakeRefPtr<InternalLoadEvent>(this, aLoadState); return Dispatch(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 (aLoadState->URI()->SchemeIs("chrome")) {
NS_WARNING("blocked external chrome: url -- use '--chrome' option"); return NS_ERROR_FAILURE;
}
// clear the decks to prevent context bleed-through (bug 298255)
rv = CreateAboutBlankDocumentViewer(nullptr, nullptr, nullptr, nullptr, /* aIsInitialDocument */ false); if (NS_FAILED(rv)) { return NS_ERROR_FAILURE;
}
if (Document* doc = GetDocument()) {
doc->DisallowBFCaching();
}
}
// If container is an iframe element and will lazy load element steps given // container returns true, then stop intersection-observing a lazy loading // element container and set container's lazy load resumption steps to null. if (IsSubframe()) { if (auto* iframe = HTMLIFrameElement::FromNodeOrNull(
mBrowsingContext->GetEmbedderElement())) { // Per spec, reload doesn't cancel lazy loading iframes. if (!(aLoadState->LoadType() & LOAD_RELOAD_NORMAL)) {
iframe->StopLazyLoading(HTMLIFrameElement::TriggerLoad::No);
}
}
}
// 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, sameDocument);
NS_ENSURE_SUCCESS(rv, rv); if (shouldTakeFocus) {
mBrowsingContext->Focus(CallerType::System, IgnoreErrors());
} if (sameDocument) { if (aLoadState->LoadIsFromSessionHistory() &&
(mLoadType & LOAD_CMD_HISTORY) &&
!aLoadState->IsResumingInterceptedNavigation()) { // We must ensure to not abort intercepted history navigations. See // https://github.com/whatwg/html/issues/12407
SetOngoingNavigation(Nothing());
} return rv;
}
}
// mDocumentViewer->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. constbool isJavaScript = aLoadState->URI()->SchemeIs("javascript"); constbool isExternalProtocol =
nsContentUtils::IsExternalProtocol(aLoadState->URI()); constbool isDownload = !aLoadState->FileName().IsVoid(); constbool toBeReset = !isJavaScript && MaybeInitTiming();
// FIXME(emilio): Should this be done by javascript: uris? What about external // protocols? if (mTiming && !isDownload) {
mTiming->NotifyBeforeUnload();
}
// The following steps are from https://html.spec.whatwg.org/#navigate // Step 19, and here we actually also perform step 2 from // #navigate-to-a-javascript:-url (step 20) where the ongoing navigation is // set to null.
SetOngoingNavigation(isJavaScript ? Nothing()
: Some(OngoingNavigation::NavigationID));
// Check if the page doesn't want to be unloaded. The javascript: // protocol handler deals with this for javascript: URLs. // NOTE(emilio): As of this writing, other browsers fire beforeunload for // external protocols, so keep doing that even though they don't return data // and thus we won't really unload this... if (!isJavaScript && !isDownload &&
!aLoadState->NotifiedBeforeUnloadListeners() && mDocumentViewer) { // Check if request is exempted from HTTPSOnlyMode and if https-first is // enabled, if so it means: // * https-first failed to upgrade request to https // * we already asked for permission to unload and the user accepted // otherwise we wouldn't be here. constbool isPrivateWin = GetOriginAttributes().IsPrivateBrowsing(); const uint32_t loadType = aLoadState->LoadType();
// Check if request is a reload. constbool isHistoryOrReload =
loadType == LOAD_RELOAD_NORMAL ||
loadType == LOAD_RELOAD_BYPASS_CACHE ||
loadType == LOAD_RELOAD_BYPASS_PROXY ||
loadType == LOAD_RELOAD_BYPASS_PROXY_AND_CACHE ||
loadType == LOAD_HISTORY;
// If it isn't a reload, the request already failed to be upgraded and // https-first is enabled then don't ask the user again for permission to // unload and just unload. bool okToUnload; if (!isHistoryOrReload && aLoadState->IsExemptFromHTTPSFirstMode() &&
nsHTTPSOnlyUtils::GetUpgradeMode(isPrivateWin) ==
nsHTTPSOnlyUtils::HTTPS_FIRST_MODE) {
rv = mDocumentViewer->PermitUnload(
nsIDocumentViewer::PermitUnloadAction::eDontPromptAndUnload,
&okToUnload);
} else {
rv = mDocumentViewer->PermitUnload(&okToUnload); if (mIsBeingDestroyed) { // unload handler destroyed this docshell. return NS_ERROR_NOT_AVAILABLE;
}
}
if (NS_SUCCEEDED(rv) && !okToUnload) { // The user chose not to unload the page, interrupt the // load.
MaybeResetInitTiming(toBeReset); return NS_OK;
}
}
if (mTiming && !isDownload) {
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);
}
}
// Do a check so that we know if there are ongoing requests // before calling Stop() below.
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);
}
if (aLoadState->LoadIsFromSessionHistory() &&
(mLoadType & LOAD_CMD_HISTORY)) {
SetOngoingNavigation(Nothing());
}
// 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. Similarly, downloads don't // unload this document... if (!isJavaScript && !isDownload && !isExternalProtocol) { // 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 ((mDocumentViewer && mDocumentViewer->GetPreviousViewer()) ||
LOAD_TYPE_HAS_FLAGS(aLoadState->LoadType(), LOAD_FLAGS_STOP_CONTENT)) {
rv = StopInternal(nsIWebNavigation::STOP_ALL, UnsetOngoingNavigation::No);
} else {
rv = StopInternal(nsIWebNavigation::STOP_NETWORK,
UnsetOngoingNavigation::No);
}
if (NS_FAILED(rv)) { return rv;
}
}
mLoadType = aLoadState->LoadType();
if (aLoadState->LoadIsFromSessionHistory() &&
(mLoadType & LOAD_CMD_HISTORY)) { if (RefPtr window = GetActiveWindow()) { if (RefPtr navigation = window->Navigation()) { if (const LoadingSessionHistoryInfo* loadingInfo =
GetLoadingSessionHistoryInfo()) {
navigation->CreateNavigationActivationFrom(
loadingInfo->mPreviousEntry,
NavigationUtils::NavigationTypeFromLoadType(mLoadType));
}
}
}
// 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 (NS_SUCCEEDED(rv)) { if (shouldTakeFocus) {
mBrowsingContext->Focus(CallerType::System, IgnoreErrors());
}
}
if (NS_FAILED(rv)) {
nsCOMPtr<nsIChannel> chan(do_QueryInterface(req));
UnblockEmbedderLoadEventForFailure();
// The spec says no exception should be raised for pre-navigation check // failures. if (NS_ERROR_DOM_SECURITY_ERR == rv) { return NS_OK;
}
nsCOMPtr<nsIURI> uri = aLoadState->URI(); if (DisplayLoadError(rv, uri, nullptr, chan) && // FIXME: At this point code was using internal load flags, but checking // non-internal load flags?
aLoadState->HasLoadFlags(LOAD_FLAGS_ERROR_LOAD_CHANGES_RV)) { return NS_ERROR_LOAD_SHOWED_ERRORPAGE;
}
// We won't report any error if this is an unknown protocol error. The // reason behind this is that it will allow enumeration of external // protocols if we report an error for each unknown protocol. if (NS_ERROR_UNKNOWN_PROTOCOL == rv) { return NS_OK;
}
}
return rv;
}
/* static */ bool nsDocShell::CanLoadInParentProcess(nsIURI* aURI) {
nsCOMPtr<nsIURI> uri = aURI; // In e10s, in the parent process, we refuse to load anything other than // "safe" resources that we ship or trust enough to give "special" URLs. bool canLoadInParent = false; if (NS_SUCCEEDED(NS_URIChainHasFlags(
uri, nsIProtocolHandler::URI_IS_UI_RESOURCE, &canLoadInParent)) &&
canLoadInParent) { // We allow UI resources. return true;
} // For about: and extension-based URIs, which don't get // URI_IS_UI_RESOURCE, first remove layers of view-source:, if present. while (uri && uri->SchemeIs("view-source")) {
nsCOMPtr<nsINestedURI> nested = do_QueryInterface(uri); if (nested) {
nested->GetInnerURI(getter_AddRefs(uri));
} else { break;
}
} // Allow about: URIs, and allow moz-extension ones if we're running // extension content in the parent process. if (!uri || uri->SchemeIs("about") ||
(!StaticPrefs::extensions_webextensions_remote() &&
uri->SchemeIs("moz-extension"))) { return true;
} #ifdef MOZ_THUNDERBIRD if (uri->SchemeIs("imap") || uri->SchemeIs("mailbox") ||
uri->SchemeIs("news") || uri->SchemeIs("nntp") ||
uri->SchemeIs("snews") || uri->SchemeIs("x-moz-ews") ||
uri->SchemeIs("x-moz-graph")) { 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 #"vailableMemoryWatcher.h"
!StaticPrefs::extensions_webextensions_remote()) { return true; #
fjava.lang.StringIndexOutOfBoundsException: Range [40, 37) out of bounds for length 45
:( java.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30
java.lang.StringIndexOutOfBoundsException: Range [11, 10) out of bounds for length 16
} returnfalse;
*: booljava.lang.StringIndexOutOfBoundsException: Range [34, 33) out of bounds for length 72 static java.lang.StringIndexOutOfBoundsException: Range [27, 26) out of bounds for length 56
java.lang.StringIndexOutOfBoundsException: Range [29, 27) out of bounds for length 36
if (!document) {
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
cessSameTypeParent( if
document:() *
}
}
java.lang.StringIndexOutOfBoundsException: Range [5, 4) out of bounds for length 18
java.lang.StringIndexOutOfBoundsException: Range [7, 6) out of bounds for length 36
java.lang.StringIndexOutOfBoundsException: Range [20, 6) out of bounds for length 21
}
/
if (! . full_total; return nullptr;
}
document=mDocumentViewer>GetDocument(;
/
//-- Get the document's principal if (document) { return
>(
:document>();
// Don't allow loads in typeContent docShells to inherit the system // principal from existing documents.
java.lang.StringIndexOutOfBoundsException: Range [2, 1) out of bounds for length 22
docPrincipal->IsSystemPrincipal()) { return nullptr;
}
// Strip the target query parameters before creating the channel.
aLoadState->MaybeStripTrackerQueryStrings(aBrowsingContext);
OriginAttributes attrs;
// Inherit origin attributes from PrincipalToInherit if inheritAttrs is // true. Otherwise we just use the origin attributes from docshell. if (inheritAttrs) {
MOZ_ASSERT(aLoadState->PrincipalToInherit(), "We should have PrincipalToInherit here.");
attrs = aLoadState->PrincipalToInherit()->OriginAttributesRef(); // If firstPartyIsolation is not enabled, then PrincipalToInherit should // have the same origin attributes with docshell.
MOZ_ASSERT_IF(!OriginAttributes::IsFirstPartyEnabled(),
attrs == aOriginAttributes);
} else {
attrs = aOriginAttributes;
attrs.SetFirstPartyDomain(IsTopLevelDoc(aBrowsingContext, aLoadInfo),
aLoadState->URI());
}
aRv = aLoadInfo->SetOriginAttributes(attrs); if (NS_WARN_IF(NS_FAILED(aRv))) { returnfalse;
}
if (aLoadState->GetIsFromProcessingFrameAttributes()) {
aLoadInfo->SetIsFromProcessingFrameAttributes();
}
// Propagate the IsFormSubmission flag to the loadInfo. if (aLoadState->IsFormSubmission()) {
aLoadInfo->SetIsFormSubmission(true);
}
// 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); if (StaticPrefs::dom_document_priority_incremental()) {
cos->SetIncremental(true);
}
}
}
}
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);
}
nsCOMPtr<nsICacheInfoChannel> cacheChannel(do_QueryInterface(channel)); auto loadType = aLoadState->LoadType();
if (loadType == LOAD_RELOAD_NORMAL &&
StaticPrefs::
browser_soft_reload_only_force_validate_top_level_document()) {
nsCOMPtr<nsICacheInfoChannel> cachingChannel = do_QueryInterface(channel); if (cachingChannel) {
cachingChannel->SetForceValidateCacheContent(true);
}
}
// figure out if we need to set the post data stream on the channel... if (aLoadState->PostDataStream()) { if (nsCOMPtr<nsIFormPOSTActionChannel> postChannel =
do_QueryInterface(channel)) { // XXX it's a bit of a hack to rewind the postdata stream here but // it has to be done in case the post data is being reused multiple // times.
nsCOMPtr<nsISeekableStream> postDataSeekable =
do_QueryInterface(aLoadState->PostDataStream()); if (postDataSeekable) {
aRv = postDataSeekable->Seek(nsISeekableStream::NS_SEEK_SET, 0);
NS_ENSURE_SUCCESS(aRv, false);
}
// we really need to have a content type associated with this stream!!
postChannel->SetUploadStream(aLoadState->PostDataStream(), ""_ns, -1);
// Ownership of the stream has transferred to the channel, clear our // reference.
aLoadState->SetPostDataStream(nullptr);
}
/* If there is a valid postdata *and* it is a History Load, *setupthecachekeyonthechannel,toretrievethe *data*only*fromthecache.Ifitisanormalreload,the *cacheisfreetogototheserverforupdatedpostdata.
*/ 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);
}
} elseif (loadType == LOAD_RELOAD_NORMAL) {
cacheChannel->SetCacheKey(aCacheKey);
}
}
} else { /* If there is no postdata, set the cache key on the channel, and *donotsettheLOAD_ONLY_FROM_CACHEflag,sothatthechannel *willbefreetogetitfromnetifitisnotfoundincache. *NewcachemayuseitcreativelyonCGIpageswithGET *methodandevenonthosethatsay"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)) {
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: { constauto& 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<nsIPolicyContainer> policyContainer = aLoadState->PolicyContainer(); if (nsCOMPtr<nsIContentSecurityPolicy> csp =
PolicyContainer::GetCSP(policyContainer)) { // 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);
}
}
}
if (policyContainer) { // For document loads we store the policyContainer 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::InitPolicyContainer(). // Please create an actual copy of the policyContainer (do not share the // same reference) otherwise modifications done (such as the meta CSP of the // new doc) in an opaque origin will incorrectly be propagated to the // embedding document.
RefPtr policyContainerToInherit = MakeRefPtr<PolicyContainer>();
policyContainerToInherit->InitFromOther(
PolicyContainer::Cast(policyContainer));
aLoadInfo->SetPolicyContainerToInherit(policyContainerToInherit);
}
if (!aPrincipalToInherit) {
MOZ_ASSERT(
mDocumentViewer->GetDocument()->NodePrincipal()->GetIsNullPrincipal(), "Load looks like first load but does not want principal inheritance.");
} else { if (XRE_IsContentProcess() &&
!ValidatePrincipalCouldPotentiallyBeLoadedBy(
aPrincipalToInherit, ContentChild::GetSingleton()->GetRemoteType(),
{})) { // Principal doesn't match our remote type, so the we need the normal // load path to do a process switch. returnfalse;
}
// If a page opens about:blank, it will have a content principal. // If it is then restored after a restart, we might not have initialized // UsesOAC for it. If this is the case, do a normal load (bug 2004165). // XXX bug 2005205 tracks removing this workaround. if (aLoadState->LoadIsFromSessionHistory() &&
!mBrowsingContext->Group()
->UsesOriginAgentCluster(aPrincipalToInherit)
.isSome()) { returnfalse;
}
}
return true;
}
void nsDocShell::UnsuppressPaintingIfNoNavigationAwayFromAboutBlank(
mozilla::PresShell* aPresShell) { if (mHasStartedLoadingOtherThanInitialBlankURI || !mDocumentViewer) { return;
}
Document* doc = mDocumentViewer->GetDocument(); if (!doc || !doc->IsInitialDocument()) { return;
} if (mDocumentViewer->GetPresShell() != aPresShell) { return;
} // Our surroundings appear to remain in the same state // as before posting the runnable.
aPresShell->UnsuppressPainting(); // The content viewer's mPresShell could have been removed now, see bug // 378682/421432 if ((aPresShell = mDocumentViewer->GetPresShell())) {
aPresShell->LoadComplete();
}
}
// Exempt web extension content scripts from trusted types policies defined by // the page in which they are running. if (auto principal = BasePrincipal::Cast(aLoadState->TriggeringPrincipal())) { if (principal->ContentScriptAddonPolicyCore()) { return NS_OK;
}
}
// If disposion is enforce for require-trusted-types-for, then we return // errors in order to block navigation. If it's report-only, errors are // ignored and the URL is unchanged. bool shouldBlockOnError = csp->GetRequireTrustedTypesForDirectiveState() ==
RequireTrustedTypesForDirectiveState::ENFORCE;
// 2. Let urlString be the result of running the URL serializer on // request’s url.
nsAutoCString urlString;
aLoadState->URI()->GetSpec(urlString);
// 3. Let encodedScriptSource be the result of removing the leading // "javascript:" from urlString.
constexpr auto javascriptScheme = "javascript:"_ns; const nsDependentCSubstring encodedScriptSource =
Substring(urlString, javascriptScheme.Length());
// 4. Let convertedScriptSource be the result of executing Process value // with a default policy algorithm
Maybe<nsAutoString> compliantStringHolder;
NS_ConvertUTF8toUTF16 encodedScriptSourceUTF16(encodedScriptSource);
constexpr nsLiteralString sink = u"Location href"_ns; auto reportPreNavigationCheckViolations = [&csp, &sink,
&encodedScriptSourceUTF16] { // Report violation the same way as for "Should sink type mismatch // violation be blocked by Content Security Policy", since that's what // other browsers do. See // https://github.com/w3c/trusted-types/issues/584. auto location = JSCallingLocation::Get();
TrustedTypeUtils::ReportSinkTypeMismatchViolations(
csp, nullptr /* aCSPEventListener */, location.FileName(),
location.mLine, location.mColumn, sink, kTrustedTypesOnlySinkGroup,
encodedScriptSourceUTF16);
};
ErrorResult error; auto convertedScriptSource =
TrustedTypeUtils::GetConvertedScriptSourceForPreNavigationCheck(
*aWindow, encodedScriptSourceUTF16, sink, compliantStringHolder,
error);
error.WouldReportJSException(); if (error.Failed()) {
reportPreNavigationCheckViolations(); if (shouldBlockOnError) {
RETURN_NSRESULT_ON_FAILURE(error);
}
error.SuppressException(); return NS_OK;
}
// 5. Set urlString to be the result of prepending "javascript:" to // stringified convertedScriptSource.
urlString = javascriptScheme + NS_ConvertUTF16toUTF8(*convertedScriptSource);
// 6. Let newURL be the result of running the URL parser on urlString.
nsCOMPtr<nsIURI> newURL;
nsresult rv = NS_NewURI(getter_AddRefs(newURL), urlString); if (NS_FAILED(rv)) {
reportPreNavigationCheckViolations(); return shouldBlockOnError ? rv : NS_OK;
}
// 7. Set request’s url to newURL.
aLoadState->SetURI(newURL); return NS_OK;
}
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;
}
MOZ_DIAGNOSTIC_ASSERT(mInitialized, "Need to initialize before load");
NS_ENSURE_TRUE(VerifyDocumentViewer(), NS_ERROR_FAILURE);
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();
auto getSourceWindowContext = [this, &aLoadState] { const MaybeDiscardedBrowsingContext& sourceBC =
aLoadState->SourceBrowsingContext(); if (!sourceBC.IsNullOrDiscarded()) { if (WindowContext* wc = sourceBC.get()->GetCurrentWindowContext()) { return wc;
}
} return mBrowsingContext->GetParentWindowContext();
};
if (StaticPrefs::dom_security_trusted_types_enabled() &&
aLoadState->URI()->SchemeIs("javascript")) { if (WindowContext* sourceWindowContext = getSourceWindowContext()) {
RefPtr<nsGlobalWindowInner> window =
sourceWindowContext->GetInnerWindow();
rv = PerformTrustedTypesPreNavigationCheck(aLoadState, window); // Default policy might destroy the whole docshell, so check that again. if (mIsBeingDestroyed) { return NS_OK;
} if (NS_FAILED(rv)) { return NS_ERROR_DOM_SECURITY_ERR;
}
}
}
if (IsSubframe()) {
MOZ_ASSERT(contentPolicyType == nsIContentPolicy::TYPE_INTERNAL_IFRAME ||
contentPolicyType == nsIContentPolicy::TYPE_INTERNAL_FRAME, "DoURILoad thinks this is a frame and InternalLoad does not"); if (StaticPrefs::dom_block_external_protocol_in_iframes()) { // Only allow URLs able to return data in iframes. if (nsContentUtils::IsExternalProtocol(aLoadState->URI())) { // The context to check user-interaction with for the purposes of // popup-blocking. // // We generally want to check the context that initiated the navigation.
WindowContext* sourceWindowContext = getSourceWindowContext();
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(); constbool popupBlocked = [&] { constbool 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. constbool hasFreePass = [&] { if (!active ||
!(context->IsInProcess() && context->SameOriginWithTop())) { returnfalse;
}
nsGlobalWindowInner* win =
context->TopWindowContext()->GetInnerWindow(); return win && win->TryOpenExternalProtocolIframe();
}();
if (context->IsInProcess() &&
context->ConsumeTransientUserGestureActivation()) { // If the user has interacted with the page, consume it. returnfalse;
}
// 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()) { returnfalse;
}
if (sourceWindowContext->CanShowPopup()) { returnfalse;
}
if (hasFreePass) { returnfalse;
}
return true;
}();
// No error must be returned when iframes are blocked. if (popupBlocked) {
nsAutoString message;
nsresult rv = nsContentUtils::GetLocalizedString(
PropertiesFile::DOM_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 (tempURI->SchemeIs("view-source")) { 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 (!doInitialSyncLoad && mBrowsingContext->IsContent()) { // https://wicg.github.io/document-picture-in-picture/#close-on-navigate // Two exceptions. // - The initial navigation is not per-spec and must complete. // - We also set IsDocumentPiP on chrome but the spec doesn't apply to it. if (Document* doc = GetExtantDocument()) {
NS_DispatchToMainThread(NS_NewRunnableFunction( "Close PIP window on navigate", [doc = RefPtr(doc)]() {
doc->CloseAnyAssociatedDocumentPiPWindows();
}));
} if (mBrowsingContext->GetIsDocumentPiP()) { return NS_OK;
}
}
// 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());
} elseif (doInitialSyncLoad) { // Materialize LoadingSessionHistoryInfo here, because DocumentChannel // loads have it, and later history behavior depends on it existing.
UniquePtr<SessionHistoryInfo> entry = MakeUnique<SessionHistoryInfo>(
uri, aLoadState->TriggeringPrincipal(),
aLoadState->PrincipalToInherit(),
aLoadState->PartitionedPrincipalToInherit(),
aLoadState->PolicyContainer(), mContentTypeHint);
entry->SetTransient();
mozilla::dom::LoadingSessionHistoryInfo info(*entry); if (Navigation::IsAPIEnabled()) {
info.mContiguousEntries.AppendElement(*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);
}
// 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;
}
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; if (contentPolicyType == nsIContentPolicy::TYPE_DOCUMENT) {
loadInfo = MakeRefPtr<LoadInfo>(
loadingWindow, uri, aLoadState->TriggeringPrincipal(),
topLevelLoadingContext, securityFlags, sandboxFlags);
} else {
loadInfo = MOZ_TRY(LoadInfo::Create(
loadingPrincipal, aLoadState->TriggeringPrincipal(), loadingNode,
securityFlags, contentPolicyType, Maybe<mozilla::dom::ClientInfo>(),
Maybe<mozilla::dom::ServiceWorkerDescriptor>(), sandboxFlags));
}
RefPtr<WindowContext> context = mBrowsingContext->GetCurrentWindowContext();
if (doInitialSyncLoad) { // Stay on the eagerly created document and adjust it to match what we would // be loading. return CompleteInitialAboutBlankLoad(aLoadState, loadInfo);
}
mHasStartedLoadingOtherThanInitialBlankURI = true;
if (mLoadType != LOAD_ERROR_PAGE && context && context->IsInProcess()) { if (context->HasValidTransientUserGestureActivation()) {
aLoadState->SetHasValidUserGestureActivation(true);
aLoadState->SetTextDirectiveUserActivation(true);
} if (!aLoadState->TriggeringWindowId()) {
aLoadState->SetTriggeringWindowId(context->Id());
} if (!aLoadState->TriggeringStorageAccess()) {
Document* contextDoc = context->GetExtantDoc(); if (contextDoc) {
aLoadState->SetTriggeringStorageAccess(
contextDoc->UsingStorageAccess());
}
}
}
// 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);
aLoadState->SetTextDirectiveUserActivation(true);
}
// Disable keyword fixup when using DocumentChannel, since // DocumentLoadListener will handle this for us (in the parent process).
mAllowKeywordFixup = false;
} elseif (!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);
}
// 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);
}
}
nsresult nsDocShell::CompleteInitialAboutBlankLoad(
nsDocShellLoadState* aLoadState, nsILoadInfo* aLoadInfo) {
nsresult rv; // 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.
aLoadInfo->SetIsThirdPartyContextToTopWindow(false);
} else { if (Document* topDoc = top->GetDocument()) {
bool thirdParty = false;
(void)topDoc->GetPrincipal()->IsThirdPartyPrincipal(
aLoadState->PrincipalToInherit(), &thirdParty);
aLoadInfo->SetIsThirdPartyContextToTopWindow(thirdParty);
} else { // If top is in a different process, we have to be third-party relative // to it.
aLoadInfo->SetIsThirdPartyContextToTopWindow(true);
}
}
if (!mDocumentViewer) {
MOZ_ASSERT(false, "How did the viewer go away?"); return NS_ERROR_FAILURE;
}
RefPtr<Document> doc = mDocumentViewer->GetDocument();
MOZ_LOG(gDocShellLog, LogLevel::Debug,
("nsDocShell[%p]::DoURILoad sync about:blank onto initial " "about:blank. Document[%p]\n", this, doc.get())); if (!doc) {
MOZ_ASSERT(false, "How did the document go away?"); return NS_ERROR_FAILURE;
}
// Get the load event fired for the initial about:blank without starting // a real load from a channel. We still need a channel object even though // we don't care about reading from the channel.
nsCOMPtr<nsIChannel> aboutBlankChannel;
rv = NS_NewChannelInternal(getter_AddRefs(aboutBlankChannel),
aLoadState->URI(), aLoadInfo, nullptr, mLoadGroup,
nullptr, nsIChannel::LOAD_DOCUMENT_URI); if (NS_FAILED(rv)) { return rv;
} if (!aboutBlankChannel) { return NS_ERROR_FAILURE;
}
nsCOMPtr<nsIPrincipal> expectedPrincipal = aLoadState->PrincipalToInherit();
nsCOMPtr<nsIPrincipal> expectedPartitionedPrincipal = expectedPrincipal; // If we don't have a content principal, also use it as partitioned principal if (expectedPrincipal && expectedPrincipal->GetIsContentPrincipal()) { // The partitioned content principal is always isolated.
StoragePrincipalHelper::Create(
aboutBlankChannel, expectedPrincipal, /* aForceIsolation */ true,
getter_AddRefs(expectedPartitionedPrincipal));
}
// The channel would sandbox aLoadState->PrincipalToInherit(). Even if // the document already has a null principal, we don't know if it's the right // sandboxed one. So be safe and clobber. const uint32_t sandboxFlags =
mBrowsingContext->GetHasLoadedNonInitialDocument()
? mBrowsingContext->GetSandboxFlags()
: mBrowsingContext->GetInitialSandboxFlags(); const bool shouldBeSandboxed = sandboxFlags & SANDBOXED_ORIGIN;
MOZ_ASSERT_IF(shouldBeSandboxed, expectedPrincipal);
// Clobber document before completing the synchronous load if it doesn't have // the right principal (bug 1979032) if (principalMismatch || shouldBeSandboxed) { // This will sandbox the principals as needed
nsCOMPtr<nsIPolicyContainer> policyContainer =
aLoadState->PolicyContainer();
nsCOMPtr<nsIURI> base = doc->GetDocBaseURI();
rv = CreateAboutBlankDocumentViewer(
expectedPrincipal, expectedPartitionedPrincipal, policyContainer, base, /* aIsInitialDocument */ true);
NS_ENSURE_SUCCESS(rv, rv);
if (nsIContentSecurityPolicy* csp =
PolicyContainer::GetCSP(doc->GetPolicyContainer())) { // We do this here rather than when inheriting the CSP in // CreateAboutBlankDocumentViewer so that client source and parsed policies // use the parent's URI as self (bug 2021482, 2035423).
MOZ_TRY(csp->SetRequestContextWithDocument(doc));
}
doc->ApplyCspFromLoadInfo(aLoadInfo);
doc->ApplySettingsFromCSP(false);
doc->RecomputeResistFingerprinting();
nsPIDOMWindowInner* innerWindow = doc->GetInnerWindow(); if (innerWindow) {
mozilla::dom::ClientSource* clientSource =
nsGlobalWindowInner::Cast(innerWindow)->GetClientSource(); // See if we don't have a controller but the parent has gained a // controller. if (clientSource && clientSource->GetController().isNothing()) {
MaybeInheritController(
clientSource,
StoragePrincipalHelper::ShouldUsePartitionPrincipalForServiceWorker( this)
? doc->PartitionedPrincipal()
: doc->GetPrincipal());
}
}
// Normal documents fire the location change at content viewer creation. // The initial about:blank does not do that at content viewer creation, // so that the UI isn't bothered about the initial about:blank if there's // immediate navigation away. However, now that the initial about:blank is // going to remain in this docshell, we need to let to the UI know about it // (at least in the top-level case).
FireOnLocationChange(this, aboutBlankChannel, aLoadState->URI(), 0);
MoveLoadingToActiveEntry(false, 0, nullptr);
doc->BeginLoad();
nsContentUtils::AddScriptRunner(
MakeAndAddRef<nsDocElementCreatedNotificationRunner>(doc)); // When scripts are not blocked (are they ever blocked here?), the runnable // runs immediately, so let's check if this docshell got destroyed or the // document got swapped. Unclear if this ever happens; this is a defensive // check. if (mIsBeingDestroyed || !mDocumentViewer ||
doc != mDocumentViewer->GetDocument()) { return NS_OK;
}
// Initialize the presShell here in the window.open() case.
RefPtr<PresShell> presShell = doc->GetPresShell(); if (presShell && !presShell->DidInitialize()) {
rv = presShell->Initialize();
NS_ENSURE_SUCCESS(rv, rv);
}
doc->SetScrollToRef(doc->GetDocumentURI());
OnStopRequest(aboutBlankChannel, NS_OK);
// Mechanisms in Document will force a load from EndLoad() // even if there are still blockers.
doc->EndLoad(); // Can't assert any postcondition, because the load event // handler may have started loading something new in this // docshell.
uint32_t openFlags = 0; if (aLoadType == LOAD_LINK) {
openFlags |= nsIURILoader::IS_CONTENT_PREFERRED;
} if (!aBrowsingContext->GetAllowContentRetargeting()) {
openFlags |= nsIURILoader::DONT_RETARGET;
}
if (!aIsDocumentLoad) {
openFlags |= nsIURILoader::IS_OBJECT_EMBED;
// Unless the pref is set, object/embed loads always specify DONT_RETARGET. // See bug 1868001 for details. if (!StaticPrefs::dom_navigation_object_embed_allow_retargeting()) {
openFlags |= nsIURILoader::DONT_RETARGET;
}
}
// If anything fails here, make sure to clear our initial ClientSource.
auto cleanupInitialClient =
MakeScopeExit([&] { mInitialClientSource.reset(); });
// 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,
GetMainThreadSerialEventTarget());
docChannel->SetInitialClientInfo(GetInitialClientInfo());
} else {
rv = AddClientChannelHelper(aChannel, std::move(noReservedClient),
GetInitialClientInfo(),
GetMainThreadSerialEventTarget());
}
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();
// If anything fails here, make sure to clear our initial ClientSource.
auto cleanupInitialClient =
MakeScopeExit([&] { mInitialClientSource.reset(); });
LoadInfo* li = static_cast<LoadInfo*>(loadInfo.get()); if (loadInfo->GetExternalContentPolicyType() ==
ExtContentPolicy::TYPE_DOCUMENT) {
li->UpdateBrowsingContextID(mBrowsingContext->Id());
} elseif (loadInfo->GetExternalContentPolicyType() ==
ExtContentPolicy::TYPE_SUBDOCUMENT) {
li->UpdateFrameBrowsingContextID(mBrowsingContext->Id());
}
// 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, GetMainThreadSerialEventTarget());
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 wrapper = MakeRefPtr<ParentChannelWrapper>(channel, loader); // We're in the parent process, so the redirect is owned by the parent // process (ContentParentId 0).
wrapper->Register(aLoadState->GetPendingRedirectChannelRegistrarId(), 0);
mLoadGroup->AddRequest(channel, nullptr);
} elseif (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;
}
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;
}
ScrollContainerFrame* rootScroll = presShell->GetRootScrollContainerFrame(); if (rootScroll) {
rootScroll->ClearDidHistoryRestore();
}
// If it's a load from history, we don't have any anchor jumping to do. // Scrollbar position will be restored by the caller based on positions stored // in session history.
bool scroll = aLoadType != LOAD_HISTORY && aLoadType != LOAD_RELOAD_NORMAL; // If the load contains text directives, try to apply them. This may fail if // the load is a same-document load that was initiated before the document was // fully loaded and the target is not yet included in the DOM tree. // For this case, the `uninvokedTextDirectives` are not cleared, so that // `Document::ScrollToRef()` can re-apply the text directive. // `Document::ScrollToRef()` is (presumably) the second "async" call mentioned // in sec. 7.4.2.3.3 in the HTML spec, "Fragment navigations": // https://html.spec.whatwg.org/#scroll-to-fragid:~:text=This%20algorithm%20will%20be%20called%20twice
// 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 &&
!scrollToTextDirective) { 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() && !scrollToTextDirective) { // 2. If fragment is the empty string, then return the special value top of // the document. // // Tell the shell it's at an anchor without scrolling.
presShell->GoToAnchor(u""_ns, nullptr, false);
if (scroll) { // 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;
}
// 3. Let potentialIndicatedElement be the result of finding a potential // indicated element given document and fragment.
NS_ConvertUTF8toUTF16 uStr(aNewHash);
auto rv = presShell->GoToAnchor(uStr, textDirectiveToScroll, scroll,
ScrollFlags::ScrollSmoothAuto);
// 4. If potentialIndicatedElement is not null, then return // potentialIndicatedElement. if (NS_SUCCEEDED(rv)) { return NS_OK;
}
// 5. Let fragmentBytes be the result of percent-decoding fragment.
nsAutoCString fragmentBytes; const bool unescaped = NS_UnescapeURL(aNewHash.Data(), aNewHash.Length(), /* aFlags = */ 0, fragmentBytes);
if (!unescaped) { // Another attempt is only necessary if characters were unescaped. return NS_OK;
}
if (fragmentBytes.IsEmpty()) { // When aNewHash contains "%00", the unescaped string may be empty, and // GoToAnchor asserts if we ask it to scroll to an empty ref.
presShell->GoToAnchor(u""_ns, nullptr, false); return NS_OK;
}
// 6. Let decodedFragment be the result of running UTF-8 decode without BOM on // fragmentBytes.
nsAutoString decodedFragment;
rv = UTF_8_ENCODING->DecodeWithoutBOMHandling(fragmentBytes, decodedFragment);
NS_ENSURE_SUCCESS(rv, rv);
// 7. Set potentialIndicatedElement to the result of finding a potential // indicated element given document and decodedFragment. // // Ignore the 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).
presShell->GoToAnchor(decodedFragment, nullptr, scroll,
ScrollFlags::ScrollSmoothAuto);
return NS_OK;
}
bool nsDocShell::OnNewURI(nsIURI* aURI, nsIChannel* aChannel,
nsIPrincipal* aTriggeringPrincipal,
nsIPrincipal* aPrincipalToInherit,
nsIPrincipal* aPartitionedPrincipalToInherit,
nsIPolicyContainer* aPolicyContainer,
bool aAddToGlobalHistory, bool aCloneSHChildren) {
MOZ_ASSERT(aURI, "uri is null");
MOZ_ASSERT(!aChannel || !aTriggeringPrincipal, "Shouldn't have both set");
// 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));
}
}
}
// 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.
[[maybe_unused]]
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);
}
/* If the url to be loaded is the same as the one already there, *andtheoriginalloadTypeisLOAD_NORMAL,LOAD_LINK,or *LOAD_STOP_CONTENT,setloadTypetoLOAD_NORMAL_REPLACEsothat *AddToSessionHistory()won'tmesswiththecurrentSHEntryand *ifthispagehasanyframechildren,italsowillbehandled *properly.seebug83684 * *NB:IfmOSHEisnullbutwehaveacurrentURI,thenitprobably *meansthatwemustbeatthetransientabout:blankcontentviewer; *weshouldletthenormalloadcontinue,sincethere'snothingto *replace.Sometimesthishappensafterasessionrestore(egprocess *switch)andmCurrentURIisnotabout:blank;weassumewecanlettheload *continue(Bug1301399). * *XXXHopefullychangingtheloadTypeatthistimewillnothurt *anywhere.Theotherwaytotakecareofsequentiallyrepeating *framesetpagesistoaddnewmethodstonsIDocShellTreeItem. *HopefullyIdon'thavetodothat.
*/ if (equalUri && mActiveEntry &&
(mLoadType == LOAD_NORMAL || mLoadType == LOAD_LINK ||
mLoadType == LOAD_STOP_CONTENT) &&
!inputStream) {
mLoadType = LOAD_NORMAL_REPLACE;
}
/* If the user pressed shift-reload, cache will create a new cache key *forthepage.SavethenewcacheKeyinSessionHistory. *seebug90098
*/ 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(cacheKey);
}
// 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);
}
// 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, false, /* 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;
}
// 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>, // <https://html.spec.whatwg.org/#shared-history-push/replace-state-steps>, // 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 EvictOutOfRangeDocumentViewers 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.
// Don't clobber the load type of an existing network load.
Maybe<AutoRestore<uint32_t>> loadTypeResetter; if (StaticPrefs::
docshell_shistory_sameDocumentNavigationOverridesLoadType() &&
!document->NodePrincipal()->IsURIInPrefList( "docshell.shistory.sameDocumentNavigationOverridesLoadType." "forceDisable")) {
loadTypeResetter.emplace(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()) { if (!loadTypeResetter.isSome()) {
loadTypeResetter.emplace(mLoadType);
}
aReplace = true;
}
// 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);
// Check that the state object isn't too long.
int32_t maxStateObjSize = StaticPrefs::browser_history_maxStateObjectSize(); if (maxStateObjSize < 0) {
maxStateObjSize = 0;
}
// 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.
NS_ENSURE_TRUE(mActiveEntry || isReplace, NS_ERROR_FAILURE);
// 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) {
uriWasModified = mActiveEntry && mActiveEntry->GetURIWasModified();
} else {
uriWasModified = true;
}
mLoadType = LOAD_PUSHSTATE;
RefPtr<SessionHistoryEntry> newSHEntry; if (!isReplace) { // 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; // FIXME Need to save the current scroll position on mActiveEntry.
scrollRestorationIsManual = mActiveEntry->GetScrollRestorationIsManual();
UpdateActiveEntry(false, /* aPreviousScrollPos = */ Some(scrollPos), aNewURI, /* aOriginalURI = */ nullptr, /* aReferrerInfo = */ referrerInfo, /* aTriggeringPrincipal = */ aDocument->NodePrincipal(),
policyContainer, title, scrollRestorationIsManual, aData,
uriWasModified);
} else {
MOZ_LOG(gSHLog, LogLevel::Debug,
("nsDocShell %p UpdateActiveEntry (replacing) mActiveEntry %p", this, mActiveEntry.get())); // Setting the resultPrincipalURI to nullptr is fine here: it will cause // NS_GetFinalChannelURI to use the originalURI as the URI, which is aNewURI // in our case. We could also set it to aNewURI, with the same result. // We don't use aTitle here, see bug 544535.
nsString title;
nsCOMPtr<nsIReferrerInfo> referrerInfo; if (mActiveEntry) {
title = mActiveEntry->GetTitle();
referrerInfo = mActiveEntry->GetReferrerInfo();
} else {
referrerInfo = nullptr;
}
UpdateActiveEntry( true, /* aPreviousScrollPos = */ Nothing(), aNewURI, aNewURI, /* aReferrerInfo = */ referrerInfo, aDocument->NodePrincipal(),
aDocument->GetPolicyContainer(), title,
mActiveEntry && mActiveEntry->GetScrollRestorationIsManual(), aData,
uriWasModified);
}
// 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);
if (RefPtr navigation = aDocument->GetInnerWindow()->Navigation()) {
MOZ_LOG(gNavigationAPILog, LogLevel::Debug,
("nsDocShell %p triggering a navigation event for a same-document " "navigation from UpdateURLAndHistory -> isReplace: %s", this, isReplace ? "true" : "false")); // Step 11: Update the navigation API entries for a same-document // navigation given document's relevant global object's navigation API, // newEntry, and historyHandling.
navigation->UpdateEntriesForSameDocumentNavigation(
mActiveEntry.get(),
isReplace ? NavigationType::Replace : NavigationType::Push,
aFiredNavigateEvent);
}
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();
}
UniquePtr<SessionHistoryInfo> previousActiveEntry(mActiveEntry.release()); if (previousActiveEntry) { // Link this entry to the previous active entry.
mActiveEntry = MakeUnique<SessionHistoryInfo>(*previousActiveEntry, aURI);
} else {
mActiveEntry = MakeUnique<SessionHistoryInfo>(
aURI, aTriggeringPrincipal, nullptr, nullptr, aPolicyContainer,
mContentTypeHint);
}
mActiveEntry->SetOriginalURI(aOriginalURI);
mActiveEntry->SetUnstrippedURI(nullptr);
mActiveEntry->SetReferrerInfo(aReferrerInfo);
mActiveEntry->SetTitle(aTitle);
mActiveEntry->SetStateData(static_cast<nsStructuredCloneContainer*>(aData));
mActiveEntry->SetURIWasModified(aURIWasModified);
mActiveEntry->SetScrollRestorationIsManual(aScrollRestorationIsManual);
if (replace) {
mActiveEntry->NavigationKey() = previousActiveEntry->NavigationKey();
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(), previousActiveEntry.get(),
mLoadType, /* aCacheKey = */ 0); // FIXME Do we need to update mPreviousEntryIndex and mLoadedEntryIndex?
}
}
if (RefPtr window = GetActiveWindow()) { if (RefPtr navigation = window->Navigation()) { if (AutoJSAPI jsapi; jsapi.Init(window)) { // This should send the correct user involvment. See bug 1903552.
navigation->FireTraverseNavigateEvent(jsapi.cx(), aLoadState,
Nothing());
}
}
}
}
nsresult rv; if (aLoadState->URI()->SchemeIs("javascript")) { // 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 SessionHistoryEntry object.
nsCOMPtr<nsIPrincipal> principal = aLoadState->PrincipalToInherit();
nsCOMPtr<nsIPrincipal> partitionedPrincipal =
aLoadState->PartitionedPrincipalToInherit();
rv = CreateAboutBlankDocumentViewer(
principal, partitionedPrincipal, nullptr, nullptr, /* aIsInitialDocument */ false, Nothing(), !aLoadingCurrentEntry);
if (NS_FAILED(rv)) { // The creation of the intermittent about:blank content // viewer failed for some reason (potentially because the // user prevented it). Interrupt the history load. return NS_OK;
}
if (!aLoadState->TriggeringPrincipal()) { // Ensure that we have a triggeringPrincipal. Otherwise javascript: // URIs will pick it up from the about:blank page we just loaded, // and we don't really want even that in this case.
nsCOMPtr<nsIPrincipal> principal =
NullPrincipal::Create(GetOriginAttributes());
aLoadState->SetTriggeringPrincipal(principal);
}
}
/* If there is a valid postdata *and* the user pressed *reloadorshift-reload,takeuser'spermissionbeforewe *repostthedatatotheserver.
*/ 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;
}
MaybeFireTraverseHistory(aLoadState);
return InternalLoad(aLoadState); // No nsIRequest
}
if (mActiveEntry) {
bool scrollRestorationIsManual =
mActiveEntry->GetScrollRestorationIsManual();
nsCOMPtr<nsILayoutHistoryState> layoutState; if (RefPtr<PresShell> presShell = GetPresShell()) {
rv = presShell->CaptureHistoryState(getter_AddRefs(layoutState));
} elseif (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();
}
}
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);
}
}
// 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;
} elseif (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. elseif (aResponseStatus != 408 &&
((aResponseStatus >= 400 && aResponseStatus <= 501) ||
aResponseStatus == 505)) {
visitURIFlags |= IHistory::UNRECOVERABLE_ERROR;
}
if (aWasUpgraded) {
visitURIFlags |=
IHistory::REDIRECT_SOURCE | IHistory::REDIRECT_SOURCE_UPGRADED;
}
// 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
// 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();
}
bool openDocHasDetachedEditor = false; 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);
}
nsresult nsDocShell::EnsureFind() { if (!mFind) {
mFind = MakeRefPtr<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.
class OnLinkClickEvent : public Runnable { public:
OnLinkClickEvent(nsDocShell* aHandler, nsIContent* aContent,
nsDocShellLoadState* aLoadState, bool aNoOpenerImplied,
nsIPrincipal* aTriggeringPrincipal);
NS_IMETHOD Run() override { // 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. (Bug 1930445)
AutoJSAPI jsapi; if (jsapi.Init(mContent->OwnerDoc()->GetScopeObject())) {
mLoadState->SetSourceElement(mContent->AsElement());
mHandler->OnLinkClickSync(mContent, mLoadState, mNoOpenerImplied,
mTriggeringPrincipal);
} return NS_OK;
}
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;
}
RefPtr<Document> ownerDoc = aContent->OwnerDoc(); if (nsContentUtils::IsExternalProtocol(aURI)) {
ownerDoc->EnsureNotEnteringAndExitFullscreen();
}
// https://html.spec.whatwg.org/#downloading-hyperlinks // Step 6, step 6.1, step 6.2 // aFileName not being void implies a download attribute, since we've already // checked if the attribute is present in `nsContentUtils::TriggerLinkClick` // and made it void otherwise. if (!aFileName.IsVoid() &&
aUserInvolvement != UserNavigationInvolvement::BrowserUI) { if (nsCOMPtr<nsPIDOMWindowInner> window = ownerDoc->GetInnerWindow()) { if (RefPtr<Navigation> navigation = window->Navigation()) {
AutoJSAPI jsapi; if (jsapi.Init(window)) {
RefPtr element = aContent->AsElement(); // Step 6.4
bool shouldContinue = navigation->FireDownloadRequestNavigateEvent(
jsapi.cx(), aURI, aUserInvolvement, element, aFileName);
// 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))) { returnfalse;
}
// 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)) { returntrue;
}
// Don't modify non-default targets. if (!aOriginalTarget.IsEmpty()) { returnfalse;
}
// Only check targets that are in extension panels or app tabs. // (isAppTab will be false for app tab subframes).
nsString mmGroup = mBrowsingContext->Top()->GetMessageManagerGroup(); if (!mmGroup.EqualsLiteral("webext-browsers") &&
!mBrowsingContext->IsAppTab()) { returnfalse;
}
nsCOMPtr<nsIURI> docURI = aContent->OwnerDoc()->GetDocumentURIObject(); if (!docURI) { returnfalse;
}
nsAutoCString docHost; if (NS_FAILED(docURI->GetHost(docHost))) { returnfalse;
}
if (linkHost.Equals(docHost)) { returnfalse;
}
// Special case: ignore "www" prefix if it is part of host string return linkHost.Length() < docHost.Length()
? !docHost.Equals("www."_ns + linkHost)
: !linkHost.Equals("www."_ns + docHost);
}
static bool ElementCanHaveNoopener(nsIContent* aContent) { // Make sure we are dealing with either an <A>, <AREA>, or <FORM> element in // the HTML, XHTML, or SVG namespace. return aContent->IsAnyOfHTMLElements(nsGkAtoms::a, nsGkAtoms::area,
nsGkAtoms::form) ||
aContent->IsSVGElement(nsGkAtoms::a);
}
// 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(), /* aNewWindowTarget */ false);
}
}
}
}
uint32_t triggeringSandboxFlags = 0;
uint64_t triggeringWindowId = 0;
bool triggeringStorageAccess = false; if (mBrowsingContext) {
triggeringSandboxFlags = aContent->OwnerDoc()->GetSandboxFlags();
triggeringWindowId = aContent->OwnerDoc()->InnerWindowID();
triggeringStorageAccess = aContent->OwnerDoc()->UsingStorageAccess();
}
// 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 (aNoOpenerImplied) {
flags |= INTERNAL_LOAD_FLAGS_NO_OPENER;
}
}
// Get the owner document of the link that was clicked, this will be // the document that the link is in, or the last document that the // link was in. From that document, we'll get the URI to use as the // referrer, since the current URI in this docshell may be a // new document that we're in the process of loading.
RefPtr<Document> referrerDoc = aContent->OwnerDoc();
// Now check that the referrerDoc's inner window is the current inner // window for mScriptGlobal. If it's not, then we don't want to // follow this link.
nsPIDOMWindowInner* referrerInner = referrerDoc->GetInnerWindow(); if (!mScriptGlobal || !referrerInner ||
mScriptGlobal->GetCurrentInnerWindow() != referrerInner) { // We're no longer the current inner window return NS_OK;
}
// referrer could be null here in some odd cases, but that's ok, // we'll just load the link w/o sending a referrer in those cases.
uint32_t loadType = LOAD_LINK; if (aLoadState->IsFormSubmission()) { if (aLoadState->Target().IsEmpty()) { // We set the right load type here for form submissions with an empty // target. Form submission with a non-empty target are handled in // nsDocShell::PerformRetargeting after we've selected the correct target // BC.
loadType = GetLoadTypeForFormSubmission(GetBrowsingContext(), aLoadState);
}
} else { // Link click can be triggered inside an onload handler, and we don't want // to add history entry in this case.
bool inOnLoadHandler = false;
GetIsExecutingOnLoadHandler(&inOnLoadHandler); if (inOnLoadHandler) {
loadType = LOAD_NORMAL_REPLACE;
}
}
// The speculative connect used to go through the predictor, but we don't // need all that just to initiate a speculative connect. if ((StaticPrefs::network_predictor_enable_hover_on_ssl() &&
mCurrentURI->SchemeIs("https")) ||
mCurrentURI->SchemeIs("http")) { if (nsCOMPtr<nsISpeculativeConnect> specService =
mozilla::components::IO::Service()) { // This would be a navigation, so if this is cross origin the speculative // connection needs to have the origin of the URL not the current page.
nsCOMPtr<nsIPrincipal> principal = BasePrincipal::CreateContentPrincipal(
aURI, aContent->NodePrincipal()->OriginAttributesRef());
//---------------------------------------------------------------------- // 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<nsIDocumentViewer> viewer;
NS_ENSURE_SUCCESS(GetDocViewer(getter_AddRefs(viewer)), NS_ERROR_FAILURE); if (viewer) {
int32_t source;
(void)viewer->GetReloadEncodingAndSource(&source); if (aSource > source) {
viewer->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;
}
// 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())) { returntrue;
}
}
// Call into InternalLoad with the pending channel when it is received.
cpcl->RegisterCallback(
aIdentifier, [self](nsDocShellLoadState* aLoadState,
nsTArray<Endpoint<extensions::PStreamFilterParent>>&&
aStreamFilterEndpoints,
nsDOMNavigationTiming* aTiming) {
MOZ_ASSERT(aLoadState->GetPendingRedirectedChannel()); if (NS_WARN_IF(self->mIsBeingDestroyed)) {
aLoadState->GetPendingRedirectedChannel()->CancelWithReason(
NS_BINDING_ABORTED, "nsDocShell::mIsBeingDestroyed"_ns); return NS_BINDING_ABORTED;
}
if (aTiming) {
self->mTiming = new nsDOMNavigationTiming(self, aTiming);
self->mBlankTiming = false;
}
// Prohibit initial about:blank handling e.g. for when a cross-process // iframe loads about:blank and becomes same-process. Conceptually, the // browsing context isn't new despite the docshell being newly created.
aLoadState->ProhibitInitialAboutBlankHandling();
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;
}
// 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. returntrue;
}
// 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);
}
}
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());
}
}
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. returntrue;
}
// 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) { returnfalse;
}
if (loadingEntry->mLoadId != UINT64_MAX) { // We're passing in mCurrentURI, which could be null. SessionHistoryCommit // does require a non-null uri if this is for a refresh load of the same // URI, but in that case mCurrentURI won't be null here.
mBrowsingContext->SessionHistoryCommit(
*loadingEntry, loadType, aPreviousURI, previousActiveEntry.get(), false, aExpired, aCacheKey);
}
// Only update navigation if the new entry will be persisted (i.e., is not // an about: page). if (!loadingEntry->mInfo.IsTransient() && GetWindow() &&
GetWindow()->GetCurrentInnerWindow()) { if (RefPtr navigation =
GetWindow()->GetCurrentInnerWindow()->Navigation()) {
navigation->InitializeHistoryEntries(loadingEntry->mContiguousEntries,
mActiveEntry.get());
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);
} elseif (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 (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()));
} elseif (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);
}
// https://html.spec.whatwg.org/#set-the-ongoing-navigation void nsDocShell::SetOngoingNavigation( const Maybe<OngoingNavigation>& aOngoingNavigation) { // We currently only use #set-the-ongoing-navigation to call, // #inform-the-navigation-api-about-aborting-navigation, but really it should // be used for more. The spec keeps a piece of state on the navigable: // https://html.spec.whatwg.org/#ongoing-navigation. Spec uses it for several // things, for example right here in #set-the-ongoing-navigation to make sure // that we don't call #inform-the-navigation-api-about-aborting-navigation if // we're setting it to the same value. We currently only care about aborting // the currently firing navigate event. Also, in reality, this is very much // related to nsDocShell::GetIsAttemptingToNavigate() which is what we // currently use to determine if we need to stop an ongoing navigation in // Document::Open, whereas the spec checks if the ongoing navigation is a // NavigationID.
// Step 1, with the exception that we assume setting the ongoing navigation to // an id always means a fresh id. if (aOngoingNavigation == mOngoingNavigation &&
aOngoingNavigation != Some(OngoingNavigation::NavigationID)) { return;
}
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