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fune/docshell/base/CanonicalBrowsingContext.cpp
Valentin Gosu d245bc86c2 Bug 1828643 - Make sure LOAD_TRR_DISABLED_MODE gets passed through defaultLoadFlags when browsing context is replaced r=necko-reviewers,kershaw 
When the user clicks continue this time in the DoH fallback warning page
we want to set the defaultLoadFlags to LOAD_TRR_DISABLED_MODE so all of
the pages & subresources in the tab will not use TRR from that point
forward.

Setting it directly on docshell.defaultLoadFlags seems to not have the correct
behaviour when the page is using the Cross-Origin-Opener-Policy header,
as that causes the DocumentChannel to do a cross process redirect and
recreate the browsing context.

Setting the defaultLoadFlags on the browsingContext directly and
adding the field to `CanonicalBrowsingContext::ReplacedBy` seems to lead to
the expected behaviour.

Differential Revision: https://phabricator.services.mozilla.com/D176959
2023-05-04 10:06:44 +00:00

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "mozilla/dom/CanonicalBrowsingContext.h"
#include "ErrorList.h"
#include "mozilla/CheckedInt.h"
#include "mozilla/ErrorResult.h"
#include "mozilla/EventForwards.h"
#include "mozilla/AsyncEventDispatcher.h"
#include "mozilla/dom/BrowserParent.h"
#include "mozilla/dom/BrowsingContextBinding.h"
#include "mozilla/dom/BrowsingContextGroup.h"
#include "mozilla/dom/ContentParent.h"
#include "mozilla/dom/EventTarget.h"
#include "mozilla/dom/PBrowserParent.h"
#include "mozilla/dom/PBackgroundSessionStorageCache.h"
#include "mozilla/dom/PWindowGlobalParent.h"
#include "mozilla/dom/WindowGlobalParent.h"
#include "mozilla/dom/ContentProcessManager.h"
#include "mozilla/dom/MediaController.h"
#include "mozilla/dom/MediaControlService.h"
#include "mozilla/dom/ContentPlaybackController.h"
#include "mozilla/dom/SessionStorageManager.h"
#include "mozilla/ipc/ProtocolUtils.h"
#include "mozilla/layers/CompositorBridgeChild.h"
#ifdef NS_PRINTING
# include "mozilla/layout/RemotePrintJobParent.h"
#endif
#include "mozilla/net/DocumentLoadListener.h"
#include "mozilla/NullPrincipal.h"
#include "mozilla/StaticPrefs_browser.h"
#include "mozilla/StaticPrefs_docshell.h"
#include "mozilla/StaticPrefs_fission.h"
#include "mozilla/Telemetry.h"
#include "nsILayoutHistoryState.h"
#include "nsIPrintSettings.h"
#include "nsIPrintSettingsService.h"
#include "nsISupports.h"
#include "nsIWebNavigation.h"
#include "mozilla/MozPromiseInlines.h"
#include "nsDocShell.h"
#include "nsFrameLoader.h"
#include "nsFrameLoaderOwner.h"
#include "nsGlobalWindowOuter.h"
#include "nsIWebBrowserChrome.h"
#include "nsIXULRuntime.h"
#include "nsNetUtil.h"
#include "nsSHistory.h"
#include "nsSecureBrowserUI.h"
#include "nsQueryObject.h"
#include "nsBrowserStatusFilter.h"
#include "nsIBrowser.h"
#include "nsTHashSet.h"
#include "SessionStoreFunctions.h"
#include "nsIXPConnect.h"
#include "nsImportModule.h"
#include "UnitTransforms.h"
using namespace mozilla::ipc;
extern mozilla::LazyLogModule gAutoplayPermissionLog;
extern mozilla::LazyLogModule gSHLog;
extern mozilla::LazyLogModule gSHIPBFCacheLog;
#define AUTOPLAY_LOG(msg, ...) \
MOZ_LOG(gAutoplayPermissionLog, LogLevel::Debug, (msg, ##__VA_ARGS__))
static mozilla::LazyLogModule sPBContext("PBContext");
// Global count of canonical browsing contexts with the private attribute set
static uint32_t gNumberOfPrivateContexts = 0;
// Current parent process epoch for parent initiated navigations
static uint64_t gParentInitiatedNavigationEpoch = 0;
static void IncreasePrivateCount() {
gNumberOfPrivateContexts++;
MOZ_LOG(sPBContext, mozilla::LogLevel::Debug,
("%s: Private browsing context count %d -> %d", __func__,
gNumberOfPrivateContexts - 1, gNumberOfPrivateContexts));
if (gNumberOfPrivateContexts > 1) {
return;
}
static bool sHasSeenPrivateContext = false;
if (!sHasSeenPrivateContext) {
sHasSeenPrivateContext = true;
mozilla::Telemetry::ScalarSet(
mozilla::Telemetry::ScalarID::DOM_PARENTPROCESS_PRIVATE_WINDOW_USED,
true);
}
}
static void DecreasePrivateCount() {
MOZ_ASSERT(gNumberOfPrivateContexts > 0);
gNumberOfPrivateContexts--;
MOZ_LOG(sPBContext, mozilla::LogLevel::Debug,
("%s: Private browsing context count %d -> %d", __func__,
gNumberOfPrivateContexts + 1, gNumberOfPrivateContexts));
if (!gNumberOfPrivateContexts &&
!mozilla::StaticPrefs::browser_privatebrowsing_autostart()) {
nsCOMPtr<nsIObserverService> observerService =
mozilla::services::GetObserverService();
if (observerService) {
MOZ_LOG(sPBContext, mozilla::LogLevel::Debug,
("%s: last-pb-context-exited fired", __func__));
observerService->NotifyObservers(nullptr, "last-pb-context-exited",
nullptr);
}
}
}
namespace mozilla {
namespace dom {
extern mozilla::LazyLogModule gUserInteractionPRLog;
#define USER_ACTIVATION_LOG(msg, ...) \
MOZ_LOG(gUserInteractionPRLog, LogLevel::Debug, (msg, ##__VA_ARGS__))
CanonicalBrowsingContext::CanonicalBrowsingContext(WindowContext* aParentWindow,
BrowsingContextGroup* aGroup,
uint64_t aBrowsingContextId,
uint64_t aOwnerProcessId,
uint64_t aEmbedderProcessId,
BrowsingContext::Type aType,
FieldValues&& aInit)
: BrowsingContext(aParentWindow, aGroup, aBrowsingContextId, aType,
std::move(aInit)),
mProcessId(aOwnerProcessId),
mEmbedderProcessId(aEmbedderProcessId),
mPermanentKey(JS::NullValue()) {
// You are only ever allowed to create CanonicalBrowsingContexts in the
// parent process.
MOZ_RELEASE_ASSERT(XRE_IsParentProcess());
// The initial URI in a BrowsingContext is always "about:blank".
MOZ_ALWAYS_SUCCEEDS(
NS_NewURI(getter_AddRefs(mCurrentRemoteURI), "about:blank"));
mozilla::HoldJSObjects(this);
}
CanonicalBrowsingContext::~CanonicalBrowsingContext() {
mPermanentKey.setNull();
mozilla::DropJSObjects(this);
if (mSessionHistory) {
mSessionHistory->SetBrowsingContext(nullptr);
}
}
/* static */
already_AddRefed<CanonicalBrowsingContext> CanonicalBrowsingContext::Get(
uint64_t aId) {
MOZ_RELEASE_ASSERT(XRE_IsParentProcess());
return BrowsingContext::Get(aId).downcast<CanonicalBrowsingContext>();
}
/* static */
CanonicalBrowsingContext* CanonicalBrowsingContext::Cast(
BrowsingContext* aContext) {
MOZ_RELEASE_ASSERT(XRE_IsParentProcess());
return static_cast<CanonicalBrowsingContext*>(aContext);
}
/* static */
const CanonicalBrowsingContext* CanonicalBrowsingContext::Cast(
const BrowsingContext* aContext) {
MOZ_RELEASE_ASSERT(XRE_IsParentProcess());
return static_cast<const CanonicalBrowsingContext*>(aContext);
}
already_AddRefed<CanonicalBrowsingContext> CanonicalBrowsingContext::Cast(
already_AddRefed<BrowsingContext>&& aContext) {
MOZ_RELEASE_ASSERT(XRE_IsParentProcess());
return aContext.downcast<CanonicalBrowsingContext>();
}
ContentParent* CanonicalBrowsingContext::GetContentParent() const {
if (mProcessId == 0) {
return nullptr;
}
ContentProcessManager* cpm = ContentProcessManager::GetSingleton();
if (!cpm) {
return nullptr;
}
return cpm->GetContentProcessById(ContentParentId(mProcessId));
}
void CanonicalBrowsingContext::GetCurrentRemoteType(nsACString& aRemoteType,
ErrorResult& aRv) const {
// If we're in the parent process, dump out the void string.
if (mProcessId == 0) {
aRemoteType = NOT_REMOTE_TYPE;
return;
}
ContentParent* cp = GetContentParent();
if (!cp) {
aRv.Throw(NS_ERROR_UNEXPECTED);
return;
}
aRemoteType = cp->GetRemoteType();
}
void CanonicalBrowsingContext::SetOwnerProcessId(uint64_t aProcessId) {
MOZ_LOG(GetLog(), LogLevel::Debug,
("SetOwnerProcessId for 0x%08" PRIx64 " (0x%08" PRIx64
" -> 0x%08" PRIx64 ")",
Id(), mProcessId, aProcessId));
mProcessId = aProcessId;
}
nsISecureBrowserUI* CanonicalBrowsingContext::GetSecureBrowserUI() {
if (!IsTop()) {
return nullptr;
}
if (!mSecureBrowserUI) {
mSecureBrowserUI = new nsSecureBrowserUI(this);
}
return mSecureBrowserUI;
}
namespace {
// The DocShellProgressBridge is attached to a root content docshell loaded in
// the parent process. Notifications are paired up with the docshell which they
// came from, so that they can be fired to the correct
// BrowsingContextWebProgress and bubble through this tree separately.
//
// Notifications are filtered by a nsBrowserStatusFilter before being received
// by the DocShellProgressBridge.
class DocShellProgressBridge : public nsIWebProgressListener {
public:
NS_DECL_ISUPPORTS
// NOTE: This relies in the expansion of `NS_FORWARD_SAFE` and all listener
// methods accepting an `aWebProgress` argument. If this changes in the
// future, this may need to be written manually.
NS_FORWARD_SAFE_NSIWEBPROGRESSLISTENER(GetTargetContext(aWebProgress))
explicit DocShellProgressBridge(uint64_t aTopContextId)
: mTopContextId(aTopContextId) {}
private:
virtual ~DocShellProgressBridge() = default;
nsIWebProgressListener* GetTargetContext(nsIWebProgress* aWebProgress) {
RefPtr<CanonicalBrowsingContext> context;
if (nsCOMPtr<nsIDocShell> docShell = do_QueryInterface(aWebProgress)) {
context = docShell->GetBrowsingContext()->Canonical();
} else {
context = CanonicalBrowsingContext::Get(mTopContextId);
}
return context && !context->IsDiscarded() ? context->GetWebProgress()
: nullptr;
}
uint64_t mTopContextId = 0;
};
NS_IMPL_ISUPPORTS(DocShellProgressBridge, nsIWebProgressListener)
} // namespace
void CanonicalBrowsingContext::MaybeAddAsProgressListener(
nsIWebProgress* aWebProgress) {
// Only add as a listener if the created docshell is a toplevel content
// docshell. We'll get notifications for all of our subframes through a single
// listener.
if (!IsTopContent()) {
return;
}
if (!mDocShellProgressBridge) {
mDocShellProgressBridge = new DocShellProgressBridge(Id());
mStatusFilter = new nsBrowserStatusFilter();
mStatusFilter->AddProgressListener(mDocShellProgressBridge,
nsIWebProgress::NOTIFY_ALL);
}
aWebProgress->AddProgressListener(mStatusFilter, nsIWebProgress::NOTIFY_ALL);
}
void CanonicalBrowsingContext::ReplacedBy(
CanonicalBrowsingContext* aNewContext,
const NavigationIsolationOptions& aRemotenessOptions) {
MOZ_ASSERT(!aNewContext->mWebProgress);
MOZ_ASSERT(!aNewContext->mSessionHistory);
MOZ_ASSERT(IsTop() && aNewContext->IsTop());
mIsReplaced = true;
aNewContext->mIsReplaced = false;
if (mStatusFilter) {
mStatusFilter->RemoveProgressListener(mDocShellProgressBridge);
mStatusFilter = nullptr;
}
mWebProgress->ContextReplaced(aNewContext);
aNewContext->mWebProgress = std::move(mWebProgress);
// Use the Transaction for the fields which need to be updated whether or not
// the new context has been attached before.
// SetWithoutSyncing can be used if context hasn't been attached.
Transaction txn;
txn.SetBrowserId(GetBrowserId());
txn.SetIsAppTab(GetIsAppTab());
txn.SetHasSiblings(GetHasSiblings());
txn.SetHistoryID(GetHistoryID());
txn.SetExplicitActive(GetExplicitActive());
txn.SetEmbedderColorSchemes(GetEmbedderColorSchemes());
txn.SetHasRestoreData(GetHasRestoreData());
txn.SetShouldDelayMediaFromStart(GetShouldDelayMediaFromStart());
// Propagate some settings on BrowsingContext replacement so they're not lost
// on bfcached navigations. These are important for GeckoView (see bug
// 1781936).
txn.SetAllowJavascript(GetAllowJavascript());
txn.SetForceEnableTrackingProtection(GetForceEnableTrackingProtection());
txn.SetUserAgentOverride(GetUserAgentOverride());
txn.SetSuspendMediaWhenInactive(GetSuspendMediaWhenInactive());
txn.SetDisplayMode(GetDisplayMode());
txn.SetForceDesktopViewport(GetForceDesktopViewport());
// Propagate the default load flags so that the TRR mode flags are forwarded
// to the new browsing context. See bug 1828643.
txn.SetDefaultLoadFlags(GetDefaultLoadFlags());
// As this is a different BrowsingContext, set InitialSandboxFlags to the
// current flags in the new context so that they also apply to any initial
// about:blank documents created in it.
txn.SetSandboxFlags(GetSandboxFlags());
txn.SetInitialSandboxFlags(GetSandboxFlags());
txn.SetTargetTopLevelLinkClicksToBlankInternal(
TargetTopLevelLinkClicksToBlank());
if (aNewContext->EverAttached()) {
MOZ_ALWAYS_SUCCEEDS(txn.Commit(aNewContext));
} else {
txn.CommitWithoutSyncing(aNewContext);
}
aNewContext->mRestoreState = mRestoreState.forget();
MOZ_ALWAYS_SUCCEEDS(SetHasRestoreData(false));
// XXXBFCache name handling is still a bit broken in Fission in general,
// at least in case name should be cleared.
if (aRemotenessOptions.mTryUseBFCache) {
MOZ_ASSERT(!aNewContext->EverAttached());
aNewContext->mFields.SetWithoutSyncing<IDX_Name>(GetName());
// We don't copy over HasLoadedNonInitialDocument here, we'll actually end
// up loading a new initial document at this point, before the real load.
// The real load will then end up setting HasLoadedNonInitialDocument to
// true.
}
if (mSessionHistory) {
mSessionHistory->SetBrowsingContext(aNewContext);
// At this point we will be creating a new ChildSHistory in the child.
// That means that the child's epoch will be reset, so it makes sense to
// reset the epoch in the parent too.
mSessionHistory->SetEpoch(0, Nothing());
mSessionHistory.swap(aNewContext->mSessionHistory);
RefPtr<ChildSHistory> childSHistory = ForgetChildSHistory();
aNewContext->SetChildSHistory(childSHistory);
}
if (mozilla::SessionHistoryInParent()) {
BackgroundSessionStorageManager::PropagateManager(Id(), aNewContext->Id());
}
// Transfer the ownership of the priority active status from the old context
// to the new context.
aNewContext->mPriorityActive = mPriorityActive;
mPriorityActive = false;
MOZ_ASSERT(aNewContext->mLoadingEntries.IsEmpty());
mLoadingEntries.SwapElements(aNewContext->mLoadingEntries);
MOZ_ASSERT(!aNewContext->mActiveEntry);
mActiveEntry.swap(aNewContext->mActiveEntry);
aNewContext->mPermanentKey = mPermanentKey;
mPermanentKey.setNull();
}
void CanonicalBrowsingContext::UpdateSecurityState() {
if (mSecureBrowserUI) {
mSecureBrowserUI->RecomputeSecurityFlags();
}
}
void CanonicalBrowsingContext::GetWindowGlobals(
nsTArray<RefPtr<WindowGlobalParent>>& aWindows) {
aWindows.SetCapacity(GetWindowContexts().Length());
for (auto& window : GetWindowContexts()) {
aWindows.AppendElement(static_cast<WindowGlobalParent*>(window.get()));
}
}
WindowGlobalParent* CanonicalBrowsingContext::GetCurrentWindowGlobal() const {
return static_cast<WindowGlobalParent*>(GetCurrentWindowContext());
}
WindowGlobalParent* CanonicalBrowsingContext::GetParentWindowContext() {
return static_cast<WindowGlobalParent*>(
BrowsingContext::GetParentWindowContext());
}
WindowGlobalParent* CanonicalBrowsingContext::GetTopWindowContext() {
return static_cast<WindowGlobalParent*>(
BrowsingContext::GetTopWindowContext());
}
already_AddRefed<nsIWidget>
CanonicalBrowsingContext::GetParentProcessWidgetContaining() {
// If our document is loaded in-process, such as chrome documents, get the
// widget directly from our outer window. Otherwise, try to get the widget
// from the toplevel content's browser's element.
nsCOMPtr<nsIWidget> widget;
if (nsGlobalWindowOuter* window = nsGlobalWindowOuter::Cast(GetDOMWindow())) {
widget = window->GetNearestWidget();
} else if (Element* topEmbedder = Top()->GetEmbedderElement()) {
widget = nsContentUtils::WidgetForContent(topEmbedder);
if (!widget) {
widget = nsContentUtils::WidgetForDocument(topEmbedder->OwnerDoc());
}
}
if (widget) {
widget = widget->GetTopLevelWidget();
}
return widget.forget();
}
already_AddRefed<nsIBrowserDOMWindow>
CanonicalBrowsingContext::GetBrowserDOMWindow() {
RefPtr<CanonicalBrowsingContext> chromeTop = TopCrossChromeBoundary();
if (nsCOMPtr<nsIDOMChromeWindow> chromeWin =
do_QueryInterface(chromeTop->GetDOMWindow())) {
nsCOMPtr<nsIBrowserDOMWindow> bdw;
if (NS_SUCCEEDED(chromeWin->GetBrowserDOMWindow(getter_AddRefs(bdw)))) {
return bdw.forget();
}
}
return nullptr;
}
already_AddRefed<WindowGlobalParent>
CanonicalBrowsingContext::GetEmbedderWindowGlobal() const {
uint64_t windowId = GetEmbedderInnerWindowId();
if (windowId == 0) {
return nullptr;
}
return WindowGlobalParent::GetByInnerWindowId(windowId);
}
already_AddRefed<CanonicalBrowsingContext>
CanonicalBrowsingContext::GetParentCrossChromeBoundary() {
if (GetParent()) {
return do_AddRef(Cast(GetParent()));
}
if (GetEmbedderElement()) {
return do_AddRef(
Cast(GetEmbedderElement()->OwnerDoc()->GetBrowsingContext()));
}
return nullptr;
}
already_AddRefed<CanonicalBrowsingContext>
CanonicalBrowsingContext::TopCrossChromeBoundary() {
RefPtr<CanonicalBrowsingContext> bc(this);
while (RefPtr<CanonicalBrowsingContext> parent =
bc->GetParentCrossChromeBoundary()) {
bc = parent.forget();
}
return bc.forget();
}
Nullable<WindowProxyHolder> CanonicalBrowsingContext::GetTopChromeWindow() {
RefPtr<CanonicalBrowsingContext> bc = TopCrossChromeBoundary();
if (bc->IsChrome()) {
return WindowProxyHolder(bc.forget());
}
return nullptr;
}
nsISHistory* CanonicalBrowsingContext::GetSessionHistory() {
if (!IsTop()) {
return Cast(Top())->GetSessionHistory();
}
// Check GetChildSessionHistory() to make sure that this BrowsingContext has
// session history enabled.
if (!mSessionHistory && GetChildSessionHistory()) {
mSessionHistory = new nsSHistory(this);
}
return mSessionHistory;
}
SessionHistoryEntry* CanonicalBrowsingContext::GetActiveSessionHistoryEntry() {
return mActiveEntry;
}
void CanonicalBrowsingContext::SetActiveSessionHistoryEntry(
SessionHistoryEntry* aEntry) {
mActiveEntry = aEntry;
}
bool CanonicalBrowsingContext::HasHistoryEntry(nsISHEntry* aEntry) {
// XXX Should we check also loading entries?
return aEntry && mActiveEntry == aEntry;
}
void CanonicalBrowsingContext::SwapHistoryEntries(nsISHEntry* aOldEntry,
nsISHEntry* aNewEntry) {
// XXX Should we check also loading entries?
if (mActiveEntry == aOldEntry) {
nsCOMPtr<SessionHistoryEntry> newEntry = do_QueryInterface(aNewEntry);
mActiveEntry = newEntry.forget();
}
}
void CanonicalBrowsingContext::AddLoadingSessionHistoryEntry(
uint64_t aLoadId, SessionHistoryEntry* aEntry) {
Unused << SetHistoryID(aEntry->DocshellID());
mLoadingEntries.AppendElement(LoadingSessionHistoryEntry{aLoadId, aEntry});
}
void CanonicalBrowsingContext::GetLoadingSessionHistoryInfoFromParent(
Maybe<LoadingSessionHistoryInfo>& aLoadingInfo) {
nsISHistory* shistory = GetSessionHistory();
if (!shistory || !GetParent()) {
return;
}
SessionHistoryEntry* parentSHE =
GetParent()->Canonical()->GetActiveSessionHistoryEntry();
if (parentSHE) {
int32_t index = -1;
for (BrowsingContext* sibling : GetParent()->Children()) {
++index;
if (sibling == this) {
nsCOMPtr<nsISHEntry> shEntry;
parentSHE->GetChildSHEntryIfHasNoDynamicallyAddedChild(
index, getter_AddRefs(shEntry));
nsCOMPtr<SessionHistoryEntry> she = do_QueryInterface(shEntry);
if (she) {
aLoadingInfo.emplace(she);
mLoadingEntries.AppendElement(LoadingSessionHistoryEntry{
aLoadingInfo.value().mLoadId, she.get()});
Unused << SetHistoryID(she->DocshellID());
}
break;
}
}
}
}
UniquePtr<LoadingSessionHistoryInfo>
CanonicalBrowsingContext::CreateLoadingSessionHistoryEntryForLoad(
nsDocShellLoadState* aLoadState, SessionHistoryEntry* existingEntry,
nsIChannel* aChannel) {
RefPtr<SessionHistoryEntry> entry;
const LoadingSessionHistoryInfo* existingLoadingInfo =
aLoadState->GetLoadingSessionHistoryInfo();
MOZ_ASSERT_IF(!existingLoadingInfo, !existingEntry);
if (existingLoadingInfo) {
if (existingEntry) {
entry = existingEntry;
} else {
MOZ_ASSERT(!existingLoadingInfo->mLoadIsFromSessionHistory);
SessionHistoryEntry::LoadingEntry* loadingEntry =
SessionHistoryEntry::GetByLoadId(existingLoadingInfo->mLoadId);
MOZ_LOG(gSHLog, LogLevel::Verbose,
("SHEntry::GetByLoadId(%" PRIu64 ") -> %p",
existingLoadingInfo->mLoadId, entry.get()));
if (!loadingEntry) {
return nullptr;
}
entry = loadingEntry->mEntry;
}
// If the entry was updated, update also the LoadingSessionHistoryInfo.
UniquePtr<LoadingSessionHistoryInfo> lshi =
MakeUnique<LoadingSessionHistoryInfo>(entry, existingLoadingInfo);
aLoadState->SetLoadingSessionHistoryInfo(std::move(lshi));
existingLoadingInfo = aLoadState->GetLoadingSessionHistoryInfo();
Unused << SetHistoryEntryCount(entry->BCHistoryLength());
} else if (aLoadState->LoadType() == LOAD_REFRESH &&
!ShouldAddEntryForRefresh(aLoadState->URI(),
aLoadState->PostDataStream()) &&
mActiveEntry) {
entry = mActiveEntry;
} else {
entry = new SessionHistoryEntry(aLoadState, aChannel);
if (IsTop()) {
// Only top level pages care about Get/SetPersist.
entry->SetPersist(
nsDocShell::ShouldAddToSessionHistory(aLoadState->URI(), aChannel));
} else if (mActiveEntry || !mLoadingEntries.IsEmpty()) {
entry->SetIsSubFrame(true);
}
entry->SetDocshellID(GetHistoryID());
entry->SetIsDynamicallyAdded(CreatedDynamically());
entry->SetForInitialLoad(true);
}
MOZ_DIAGNOSTIC_ASSERT(entry);
UniquePtr<LoadingSessionHistoryInfo> loadingInfo;
if (existingLoadingInfo) {
loadingInfo = MakeUnique<LoadingSessionHistoryInfo>(*existingLoadingInfo);
} else {
loadingInfo = MakeUnique<LoadingSessionHistoryInfo>(entry);
mLoadingEntries.AppendElement(
LoadingSessionHistoryEntry{loadingInfo->mLoadId, entry});
}
MOZ_ASSERT(SessionHistoryEntry::GetByLoadId(loadingInfo->mLoadId)->mEntry ==
entry);
return loadingInfo;
}
UniquePtr<LoadingSessionHistoryInfo>
CanonicalBrowsingContext::ReplaceLoadingSessionHistoryEntryForLoad(
LoadingSessionHistoryInfo* aInfo, nsIChannel* aNewChannel) {
MOZ_ASSERT(aInfo);
MOZ_ASSERT(aNewChannel);
SessionHistoryInfo newInfo = SessionHistoryInfo(
aNewChannel, aInfo->mInfo.LoadType(),
aInfo->mInfo.GetPartitionedPrincipalToInherit(), aInfo->mInfo.GetCsp());
for (size_t i = 0; i < mLoadingEntries.Length(); ++i) {
if (mLoadingEntries[i].mLoadId == aInfo->mLoadId) {
RefPtr<SessionHistoryEntry> loadingEntry = mLoadingEntries[i].mEntry;
loadingEntry->SetInfo(&newInfo);
if (IsTop()) {
// Only top level pages care about Get/SetPersist.
nsCOMPtr<nsIURI> uri;
aNewChannel->GetURI(getter_AddRefs(uri));
loadingEntry->SetPersist(
nsDocShell::ShouldAddToSessionHistory(uri, aNewChannel));
} else {
loadingEntry->SetIsSubFrame(aInfo->mInfo.IsSubFrame());
}
loadingEntry->SetDocshellID(GetHistoryID());
loadingEntry->SetIsDynamicallyAdded(CreatedDynamically());
return MakeUnique<LoadingSessionHistoryInfo>(loadingEntry, aInfo);
}
}
return nullptr;
}
using PrintPromise = CanonicalBrowsingContext::PrintPromise;
#ifdef NS_PRINTING
class PrintListenerAdapter final : public nsIWebProgressListener {
public:
explicit PrintListenerAdapter(PrintPromise::Private* aPromise)
: mPromise(aPromise) {}
NS_DECL_ISUPPORTS
// NS_DECL_NSIWEBPROGRESSLISTENER
NS_IMETHOD OnStateChange(nsIWebProgress* aWebProgress, nsIRequest* aRequest,
uint32_t aStateFlags, nsresult aStatus) override {
if (aStateFlags & nsIWebProgressListener::STATE_STOP &&
aStateFlags & nsIWebProgressListener::STATE_IS_DOCUMENT && mPromise) {
mPromise->Resolve(true, __func__);
mPromise = nullptr;
}
return NS_OK;
}
NS_IMETHOD OnStatusChange(nsIWebProgress* aWebProgress, nsIRequest* aRequest,
nsresult aStatus,
const char16_t* aMessage) override {
if (aStatus != NS_OK && mPromise) {
mPromise->Reject(aStatus, __func__);
mPromise = nullptr;
}
return NS_OK;
}
NS_IMETHOD OnProgressChange(nsIWebProgress* aWebProgress,
nsIRequest* aRequest, int32_t aCurSelfProgress,
int32_t aMaxSelfProgress,
int32_t aCurTotalProgress,
int32_t aMaxTotalProgress) override {
return NS_OK;
}
NS_IMETHOD OnLocationChange(nsIWebProgress* aWebProgress,
nsIRequest* aRequest, nsIURI* aLocation,
uint32_t aFlags) override {
return NS_OK;
}
NS_IMETHOD OnSecurityChange(nsIWebProgress* aWebProgress,
nsIRequest* aRequest, uint32_t aState) override {
return NS_OK;
}
NS_IMETHOD OnContentBlockingEvent(nsIWebProgress* aWebProgress,
nsIRequest* aRequest,
uint32_t aEvent) override {
return NS_OK;
}
private:
~PrintListenerAdapter() = default;
RefPtr<PrintPromise::Private> mPromise;
};
NS_IMPL_ISUPPORTS(PrintListenerAdapter, nsIWebProgressListener)
#endif
already_AddRefed<Promise> CanonicalBrowsingContext::PrintJS(
nsIPrintSettings* aPrintSettings, ErrorResult& aRv) {
RefPtr<Promise> promise = Promise::Create(GetIncumbentGlobal(), aRv);
if (NS_WARN_IF(aRv.Failed())) {
return promise.forget();
}
Print(aPrintSettings)
->Then(
GetCurrentSerialEventTarget(), __func__,
[promise](bool) { promise->MaybeResolveWithUndefined(); },
[promise](nsresult aResult) { promise->MaybeReject(aResult); });
return promise.forget();
}
RefPtr<PrintPromise> CanonicalBrowsingContext::Print(
nsIPrintSettings* aPrintSettings) {
#ifndef NS_PRINTING
return PrintPromise::CreateAndReject(NS_ERROR_NOT_AVAILABLE, __func__);
#else
auto promise = MakeRefPtr<PrintPromise::Private>(__func__);
auto listener = MakeRefPtr<PrintListenerAdapter>(promise);
if (IsInProcess()) {
RefPtr<nsGlobalWindowOuter> outerWindow =
nsGlobalWindowOuter::Cast(GetDOMWindow());
if (NS_WARN_IF(!outerWindow)) {
promise->Reject(NS_ERROR_FAILURE, __func__);
return promise;
}
ErrorResult rv;
outerWindow->Print(aPrintSettings,
/* aRemotePrintJob = */ nullptr, listener,
/* aDocShellToCloneInto = */ nullptr,
nsGlobalWindowOuter::IsPreview::No,
nsGlobalWindowOuter::IsForWindowDotPrint::No,
/* aPrintPreviewCallback = */ nullptr, rv);
if (rv.Failed()) {
promise->Reject(rv.StealNSResult(), __func__);
}
return promise;
}
auto* browserParent = GetBrowserParent();
if (NS_WARN_IF(!browserParent)) {
promise->Reject(NS_ERROR_FAILURE, __func__);
return promise;
}
nsCOMPtr<nsIPrintSettingsService> printSettingsSvc =
do_GetService("@mozilla.org/gfx/printsettings-service;1");
if (NS_WARN_IF(!printSettingsSvc)) {
promise->Reject(NS_ERROR_FAILURE, __func__);
return promise;
}
nsresult rv;
nsCOMPtr<nsIPrintSettings> printSettings = aPrintSettings;
if (!printSettings) {
rv =
printSettingsSvc->CreateNewPrintSettings(getter_AddRefs(printSettings));
if (NS_WARN_IF(NS_FAILED(rv))) {
promise->Reject(rv, __func__);
return promise;
}
}
embedding::PrintData printData;
rv = printSettingsSvc->SerializeToPrintData(printSettings, &printData);
if (NS_WARN_IF(NS_FAILED(rv))) {
promise->Reject(rv, __func__);
return promise;
}
layout::RemotePrintJobParent* remotePrintJob =
new layout::RemotePrintJobParent(printSettings);
printData.remotePrintJob() =
browserParent->Manager()->SendPRemotePrintJobConstructor(remotePrintJob);
if (listener) {
remotePrintJob->RegisterListener(listener);
}
if (NS_WARN_IF(!browserParent->SendPrint(this, printData))) {
promise->Reject(NS_ERROR_FAILURE, __func__);
}
return promise.forget();
#endif
}
void CanonicalBrowsingContext::CallOnAllTopDescendants(
const std::function<mozilla::CallState(CanonicalBrowsingContext*)>&
aCallback) {
#ifdef DEBUG
RefPtr<CanonicalBrowsingContext> parent = GetParentCrossChromeBoundary();
MOZ_ASSERT(!parent, "Should only call on top chrome BC");
#endif
nsTArray<RefPtr<BrowsingContextGroup>> groups;
BrowsingContextGroup::GetAllGroups(groups);
for (auto& browsingContextGroup : groups) {
for (auto& bc : browsingContextGroup->Toplevels()) {
if (bc == this) {
// Cannot be a descendent of myself so skip.
continue;
}
RefPtr<CanonicalBrowsingContext> top =
bc->Canonical()->TopCrossChromeBoundary();
if (top == this) {
if (aCallback(bc->Canonical()) == CallState::Stop) {
return;
}
}
}
}
}
void CanonicalBrowsingContext::SessionHistoryCommit(
uint64_t aLoadId, const nsID& aChangeID, uint32_t aLoadType, bool aPersist,
bool aCloneEntryChildren, bool aChannelExpired, uint32_t aCacheKey) {
MOZ_LOG(gSHLog, LogLevel::Verbose,
("CanonicalBrowsingContext::SessionHistoryCommit %p %" PRIu64, this,
aLoadId));
MOZ_ASSERT(aLoadId != UINT64_MAX,
"Must not send special about:blank loadinfo to parent.");
for (size_t i = 0; i < mLoadingEntries.Length(); ++i) {
if (mLoadingEntries[i].mLoadId == aLoadId) {
nsSHistory* shistory = static_cast<nsSHistory*>(GetSessionHistory());
if (!shistory) {
SessionHistoryEntry::RemoveLoadId(aLoadId);
mLoadingEntries.RemoveElementAt(i);
return;
}
RefPtr<SessionHistoryEntry> newActiveEntry = mLoadingEntries[i].mEntry;
if (aCacheKey != 0) {
newActiveEntry->SetCacheKey(aCacheKey);
}
if (aChannelExpired) {
newActiveEntry->SharedInfo()->mExpired = true;
}
bool loadFromSessionHistory = !newActiveEntry->ForInitialLoad();
newActiveEntry->SetForInitialLoad(false);
SessionHistoryEntry::RemoveLoadId(aLoadId);
mLoadingEntries.RemoveElementAt(i);
int32_t indexOfHistoryLoad = -1;
if (loadFromSessionHistory) {
nsCOMPtr<nsISHEntry> root = nsSHistory::GetRootSHEntry(newActiveEntry);
indexOfHistoryLoad = shistory->GetIndexOfEntry(root);
if (indexOfHistoryLoad < 0) {
// Entry has been removed from the session history.
return;
}
}
CallerWillNotifyHistoryIndexAndLengthChanges caller(shistory);
// If there is a name in the new entry, clear the name of all contiguous
// entries. This is for https://html.spec.whatwg.org/#history-traversal
// Step 4.4.2.
nsAutoString nameOfNewEntry;
newActiveEntry->GetName(nameOfNewEntry);
if (!nameOfNewEntry.IsEmpty()) {
nsSHistory::WalkContiguousEntries(
newActiveEntry,
[](nsISHEntry* aEntry) { aEntry->SetName(EmptyString()); });
}
bool addEntry = ShouldUpdateSessionHistory(aLoadType);
if (IsTop()) {
if (mActiveEntry && !mActiveEntry->GetFrameLoader()) {
bool sharesDocument = true;
mActiveEntry->SharesDocumentWith(newActiveEntry, &sharesDocument);
if (!sharesDocument) {
// If the old page won't be in the bfcache,
// clear the dynamic entries.
RemoveDynEntriesFromActiveSessionHistoryEntry();
}
}
if (LOAD_TYPE_HAS_FLAGS(aLoadType,
nsIWebNavigation::LOAD_FLAGS_REPLACE_HISTORY)) {
// Replace the current entry with the new entry.
int32_t index = shistory->GetIndexForReplace();
// If we're trying to replace an inexistant shistory entry then we
// should append instead.
addEntry = index < 0;
if (!addEntry) {
shistory->ReplaceEntry(index, newActiveEntry);
}
mActiveEntry = newActiveEntry;
} else if (LOAD_TYPE_HAS_FLAGS(
aLoadType, nsIWebNavigation::LOAD_FLAGS_IS_REFRESH) &&
!ShouldAddEntryForRefresh(newActiveEntry) && mActiveEntry) {
addEntry = false;
mActiveEntry->ReplaceWith(*newActiveEntry);
} else {
mActiveEntry = newActiveEntry;
}
if (loadFromSessionHistory) {
// XXX Synchronize browsing context tree and session history tree?
shistory->InternalSetRequestedIndex(indexOfHistoryLoad);
shistory->UpdateIndex();
if (IsTop()) {
mActiveEntry->SetWireframe(Nothing());
}
} else if (addEntry) {
shistory->AddEntry(mActiveEntry, aPersist);
shistory->InternalSetRequestedIndex(-1);
}
} else {
// FIXME The old implementations adds it to the parent's mLSHE if there
// is one, need to figure out if that makes sense here (peterv
// doesn't think it would).
if (loadFromSessionHistory) {
if (mActiveEntry) {
// mActiveEntry is null if we're loading iframes from session
// history while also parent page is loading from session history.
// In that case there isn't anything to sync.
mActiveEntry->SyncTreesForSubframeNavigation(newActiveEntry, Top(),
this);
}
mActiveEntry = newActiveEntry;
shistory->InternalSetRequestedIndex(indexOfHistoryLoad);
// FIXME UpdateIndex() here may update index too early (but even the
// old implementation seems to have similar issues).
shistory->UpdateIndex();
} else if (addEntry) {
if (mActiveEntry) {
if (LOAD_TYPE_HAS_FLAGS(
aLoadType, nsIWebNavigation::LOAD_FLAGS_REPLACE_HISTORY) ||
(LOAD_TYPE_HAS_FLAGS(aLoadType,
nsIWebNavigation::LOAD_FLAGS_IS_REFRESH) &&
!ShouldAddEntryForRefresh(newActiveEntry))) {
// FIXME We need to make sure that when we create the info we
// make a copy of the shared state.
mActiveEntry->ReplaceWith(*newActiveEntry);
} else {
// AddChildSHEntryHelper does update the index of the session
// history!
shistory->AddChildSHEntryHelper(mActiveEntry, newActiveEntry,
Top(), aCloneEntryChildren);
mActiveEntry = newActiveEntry;
}
} else {
SessionHistoryEntry* parentEntry = GetParent()->mActiveEntry;
// XXX What should happen if parent doesn't have mActiveEntry?
// Or can that even happen ever?
if (parentEntry) {
mActiveEntry = newActiveEntry;
// FIXME Using IsInProcess for aUseRemoteSubframes isn't quite
// right, but aUseRemoteSubframes should be going away.
parentEntry->AddChild(
mActiveEntry,
CreatedDynamically() ? -1 : GetParent()->IndexOf(this),
IsInProcess());
}
}
shistory->InternalSetRequestedIndex(-1);
}
}
ResetSHEntryHasUserInteractionCache();
HistoryCommitIndexAndLength(aChangeID, caller);
shistory->LogHistory();
return;
}
// XXX Should the loading entries before [i] be removed?
}
// FIXME Should we throw an error if we don't find an entry for
// aSessionHistoryEntryId?
}
already_AddRefed<nsDocShellLoadState> CanonicalBrowsingContext::CreateLoadInfo(
SessionHistoryEntry* aEntry) {
const SessionHistoryInfo& info = aEntry->Info();
RefPtr<nsDocShellLoadState> loadState(new nsDocShellLoadState(info.GetURI()));
info.FillLoadInfo(*loadState);
UniquePtr<LoadingSessionHistoryInfo> loadingInfo;
loadingInfo = MakeUnique<LoadingSessionHistoryInfo>(aEntry);
mLoadingEntries.AppendElement(
LoadingSessionHistoryEntry{loadingInfo->mLoadId, aEntry});
loadState->SetLoadingSessionHistoryInfo(std::move(loadingInfo));
return loadState.forget();
}
void CanonicalBrowsingContext::NotifyOnHistoryReload(
bool aForceReload, bool& aCanReload,
Maybe<NotNull<RefPtr<nsDocShellLoadState>>>& aLoadState,
Maybe<bool>& aReloadActiveEntry) {
MOZ_DIAGNOSTIC_ASSERT(!aLoadState);
aCanReload = true;
nsISHistory* shistory = GetSessionHistory();
NS_ENSURE_TRUE_VOID(shistory);
shistory->NotifyOnHistoryReload(&aCanReload);
if (!aCanReload) {
return;
}
if (mActiveEntry) {
aLoadState.emplace(WrapMovingNotNull(RefPtr{CreateLoadInfo(mActiveEntry)}));
aReloadActiveEntry.emplace(true);
if (aForceReload) {
shistory->RemoveFrameEntries(mActiveEntry);
}
} else if (!mLoadingEntries.IsEmpty()) {
const LoadingSessionHistoryEntry& loadingEntry =
mLoadingEntries.LastElement();
aLoadState.emplace(
WrapMovingNotNull(RefPtr{CreateLoadInfo(loadingEntry.mEntry)}));
aReloadActiveEntry.emplace(false);
if (aForceReload) {
SessionHistoryEntry::LoadingEntry* entry =
SessionHistoryEntry::GetByLoadId(loadingEntry.mLoadId);
if (entry) {
shistory->RemoveFrameEntries(entry->mEntry);
}
}
}
if (aLoadState) {
// Use 0 as the offset, since aLoadState will be be used for reload.
aLoadState.ref()->SetLoadIsFromSessionHistory(0,
aReloadActiveEntry.value());
}
// If we don't have an active entry and we don't have a loading entry then
// the nsDocShell will create a load state based on its document.
}
void CanonicalBrowsingContext::SetActiveSessionHistoryEntry(
const Maybe<nsPoint>& aPreviousScrollPos, SessionHistoryInfo* aInfo,
uint32_t aLoadType, uint32_t aUpdatedCacheKey, const nsID& aChangeID) {
nsISHistory* shistory = GetSessionHistory();
if (!shistory) {
return;
}
CallerWillNotifyHistoryIndexAndLengthChanges caller(shistory);
RefPtr<SessionHistoryEntry> oldActiveEntry = mActiveEntry;
if (aPreviousScrollPos.isSome() && oldActiveEntry) {
oldActiveEntry->SetScrollPosition(aPreviousScrollPos.ref().x,
aPreviousScrollPos.ref().y);
}
mActiveEntry = new SessionHistoryEntry(aInfo);
mActiveEntry->SetDocshellID(GetHistoryID());
mActiveEntry->AdoptBFCacheEntry(oldActiveEntry);
if (aUpdatedCacheKey != 0) {
mActiveEntry->SharedInfo()->mCacheKey = aUpdatedCacheKey;
}
if (IsTop()) {
Maybe<int32_t> previousEntryIndex, loadedEntryIndex;
shistory->AddToRootSessionHistory(
true, oldActiveEntry, this, mActiveEntry, aLoadType,
nsDocShell::ShouldAddToSessionHistory(aInfo->GetURI(), nullptr),
&previousEntryIndex, &loadedEntryIndex);
} else {
if (oldActiveEntry) {
shistory->AddChildSHEntryHelper(oldActiveEntry, mActiveEntry, Top(),
true);
} else if (GetParent() && GetParent()->mActiveEntry) {
GetParent()->mActiveEntry->AddChild(
mActiveEntry, CreatedDynamically() ? -1 : GetParent()->IndexOf(this),
UseRemoteSubframes());
}
}
ResetSHEntryHasUserInteractionCache();
shistory->InternalSetRequestedIndex(-1);
// FIXME Need to do the equivalent of EvictContentViewersOrReplaceEntry.
HistoryCommitIndexAndLength(aChangeID, caller);
static_cast<nsSHistory*>(shistory)->LogHistory();
}
void CanonicalBrowsingContext::ReplaceActiveSessionHistoryEntry(
SessionHistoryInfo* aInfo) {
if (!mActiveEntry) {
return;
}
mActiveEntry->SetInfo(aInfo);
// Notify children of the update
nsSHistory* shistory = static_cast<nsSHistory*>(GetSessionHistory());
if (shistory) {
shistory->NotifyOnHistoryReplaceEntry();
shistory->UpdateRootBrowsingContextState();
}
ResetSHEntryHasUserInteractionCache();
if (IsTop()) {
mActiveEntry->SetWireframe(Nothing());
}
// FIXME Need to do the equivalent of EvictContentViewersOrReplaceEntry.
}
void CanonicalBrowsingContext::RemoveDynEntriesFromActiveSessionHistoryEntry() {
nsISHistory* shistory = GetSessionHistory();
// In theory shistory can be null here if the method is called right after
// CanonicalBrowsingContext::ReplacedBy call.
NS_ENSURE_TRUE_VOID(shistory);
nsCOMPtr<nsISHEntry> root = nsSHistory::GetRootSHEntry(mActiveEntry);
shistory->RemoveDynEntries(shistory->GetIndexOfEntry(root), mActiveEntry);
}
void CanonicalBrowsingContext::RemoveFromSessionHistory(const nsID& aChangeID) {
nsSHistory* shistory = static_cast<nsSHistory*>(GetSessionHistory());
if (shistory) {
CallerWillNotifyHistoryIndexAndLengthChanges caller(shistory);
nsCOMPtr<nsISHEntry> root = nsSHistory::GetRootSHEntry(mActiveEntry);
bool didRemove;
AutoTArray<nsID, 16> ids({GetHistoryID()});
shistory->RemoveEntries(ids, shistory->GetIndexOfEntry(root), &didRemove);
if (didRemove) {
RefPtr<BrowsingContext> rootBC = shistory->GetBrowsingContext();
if (rootBC) {
if (!rootBC->IsInProcess()) {
if (ContentParent* cp = rootBC->Canonical()->GetContentParent()) {
Unused << cp->SendDispatchLocationChangeEvent(rootBC);
}
} else if (rootBC->GetDocShell()) {
rootBC->GetDocShell()->DispatchLocationChangeEvent();
}
}
}
HistoryCommitIndexAndLength(aChangeID, caller);
}
}
Maybe<int32_t> CanonicalBrowsingContext::HistoryGo(
int32_t aOffset, uint64_t aHistoryEpoch, bool aRequireUserInteraction,
bool aUserActivation, Maybe<ContentParentId> aContentId) {
if (aRequireUserInteraction && aOffset != -1 && aOffset != 1) {
NS_ERROR(
"aRequireUserInteraction may only be used with an offset of -1 or 1");
return Nothing();
}
nsSHistory* shistory = static_cast<nsSHistory*>(GetSessionHistory());
if (!shistory) {
return Nothing();
}
CheckedInt<int32_t> index = shistory->GetRequestedIndex() >= 0
? shistory->GetRequestedIndex()
: shistory->Index();
MOZ_LOG(gSHLog, LogLevel::Debug,
("HistoryGo(%d->%d) epoch %" PRIu64 "/id %" PRIu64, aOffset,
(index + aOffset).value(), aHistoryEpoch,
(uint64_t)(aContentId.isSome() ? aContentId.value() : 0)));
while (true) {
index += aOffset;
if (!index.isValid()) {
MOZ_LOG(gSHLog, LogLevel::Debug, ("Invalid index"));
return Nothing();
}
// Check for user interaction if desired, except for the first and last
// history entries. We compare with >= to account for the case where
// aOffset >= length.
if (!aRequireUserInteraction || index.value() >= shistory->Length() - 1 ||
index.value() <= 0) {
break;
}
if (shistory->HasUserInteractionAtIndex(index.value())) {
break;
}
}
// Implement aborting additional history navigations from within the same
// event spin of the content process.
uint64_t epoch;
bool sameEpoch = false;
Maybe<ContentParentId> id;
shistory->GetEpoch(epoch, id);
if (aContentId == id && epoch >= aHistoryEpoch) {
sameEpoch = true;
MOZ_LOG(gSHLog, LogLevel::Debug, ("Same epoch/id"));
}
// Don't update the epoch until we know if the target index is valid
// GoToIndex checks that index is >= 0 and < length.
nsTArray<nsSHistory::LoadEntryResult> loadResults;
nsresult rv = shistory->GotoIndex(index.value(), loadResults, sameEpoch,
aOffset == 0, aUserActivation);
if (NS_FAILED(rv)) {
MOZ_LOG(gSHLog, LogLevel::Debug,
("Dropping HistoryGo - bad index or same epoch (not in same doc)"));
return Nothing();
}
if (epoch < aHistoryEpoch || aContentId != id) {
MOZ_LOG(gSHLog, LogLevel::Debug, ("Set epoch"));
shistory->SetEpoch(aHistoryEpoch, aContentId);
}
int32_t requestedIndex = shistory->GetRequestedIndex();
nsSHistory::LoadURIs(loadResults);
return Some(requestedIndex);
}
JSObject* CanonicalBrowsingContext::WrapObject(
JSContext* aCx, JS::Handle<JSObject*> aGivenProto) {
return CanonicalBrowsingContext_Binding::Wrap(aCx, this, aGivenProto);
}
void CanonicalBrowsingContext::DispatchWheelZoomChange(bool aIncrease) {
Element* element = Top()->GetEmbedderElement();
if (!element) {
return;
}
auto event = aIncrease ? u"DoZoomEnlargeBy10"_ns : u"DoZoomReduceBy10"_ns;
auto dispatcher = MakeRefPtr<AsyncEventDispatcher>(
element, event, CanBubble::eYes, ChromeOnlyDispatch::eYes);
dispatcher->PostDOMEvent();
}
void CanonicalBrowsingContext::CanonicalDiscard() {
if (mTabMediaController) {
mTabMediaController->Shutdown();
mTabMediaController = nullptr;
}
if (mCurrentLoad) {
mCurrentLoad->Cancel(NS_BINDING_ABORTED,
"CanonicalBrowsingContext::CanonicalDiscard"_ns);
}
if (mWebProgress) {
RefPtr<BrowsingContextWebProgress> progress = mWebProgress;
progress->ContextDiscarded();
}
if (IsTop()) {
BackgroundSessionStorageManager::RemoveManager(Id());
}
CancelSessionStoreUpdate();
if (UsePrivateBrowsing() && EverAttached() && IsContent()) {
DecreasePrivateCount();
}
}
void CanonicalBrowsingContext::CanonicalAttach() {
if (UsePrivateBrowsing() && IsContent()) {
IncreasePrivateCount();
}
}
void CanonicalBrowsingContext::AddPendingDiscard() {
MOZ_ASSERT(!mFullyDiscarded);
mPendingDiscards++;
}
void CanonicalBrowsingContext::RemovePendingDiscard() {
mPendingDiscards--;
if (!mPendingDiscards) {
mFullyDiscarded = true;
auto listeners = std::move(mFullyDiscardedListeners);
for (const auto& listener : listeners) {
listener(Id());
}
}
}
void CanonicalBrowsingContext::AddFinalDiscardListener(
std::function<void(uint64_t)>&& aListener) {
if (mFullyDiscarded) {
aListener(Id());
return;
}
mFullyDiscardedListeners.AppendElement(std::move(aListener));
}
void CanonicalBrowsingContext::SetForceAppWindowActive(bool aForceActive,
ErrorResult& aRv) {
MOZ_DIAGNOSTIC_ASSERT(IsChrome());
MOZ_DIAGNOSTIC_ASSERT(IsTop());
if (!IsChrome() || !IsTop()) {
return aRv.ThrowNotAllowedError(
"You shouldn't need to force this BrowsingContext to be active, use "
".isActive instead");
}
if (mForceAppWindowActive == aForceActive) {
return;
}
mForceAppWindowActive = aForceActive;
RecomputeAppWindowVisibility();
}
void CanonicalBrowsingContext::RecomputeAppWindowVisibility() {
MOZ_RELEASE_ASSERT(IsChrome());
MOZ_RELEASE_ASSERT(IsTop());
const bool wasAlreadyActive = IsActive();
nsCOMPtr<nsIWidget> widget;
if (auto* docShell = GetDocShell()) {
nsDocShell::Cast(docShell)->GetMainWidget(getter_AddRefs(widget));
}
Unused << NS_WARN_IF(!widget);
const bool isNowActive =
ForceAppWindowActive() || (widget && !widget->IsFullyOccluded() &&
widget->SizeMode() != nsSizeMode_Minimized);
if (isNowActive == wasAlreadyActive) {
return;
}
SetIsActive(isNowActive, IgnoreErrors());
if (widget) {
// Pause if we are not active, resume if we are active.
widget->PauseOrResumeCompositor(!isNowActive);
}
}
void CanonicalBrowsingContext::AdjustPrivateBrowsingCount(
bool aPrivateBrowsing) {
if (IsDiscarded() || !EverAttached() || IsChrome()) {
return;
}
MOZ_DIAGNOSTIC_ASSERT(aPrivateBrowsing == UsePrivateBrowsing());
if (aPrivateBrowsing) {
IncreasePrivateCount();
} else {
DecreasePrivateCount();
}
}
void CanonicalBrowsingContext::NotifyStartDelayedAutoplayMedia() {
WindowContext* windowContext = GetCurrentWindowContext();
if (!windowContext) {
return;
}
// As this function would only be called when user click the play icon on the
// tab bar. That's clear user intent to play, so gesture activate the window
// context so that the block-autoplay logic allows the media to autoplay.
windowContext->NotifyUserGestureActivation();
AUTOPLAY_LOG("NotifyStartDelayedAutoplayMedia for chrome bc 0x%08" PRIx64,
Id());
StartDelayedAutoplayMediaComponents();
// Notfiy all content browsing contexts which are related with the canonical
// browsing content tree to start delayed autoplay media.
Group()->EachParent([&](ContentParent* aParent) {
Unused << aParent->SendStartDelayedAutoplayMediaComponents(this);
});
}
void CanonicalBrowsingContext::NotifyMediaMutedChanged(bool aMuted,
ErrorResult& aRv) {
MOZ_ASSERT(!GetParent(),
"Notify media mute change on non top-level context!");
SetMuted(aMuted, aRv);
}
uint32_t CanonicalBrowsingContext::CountSiteOrigins(
GlobalObject& aGlobal,
const Sequence<OwningNonNull<BrowsingContext>>& aRoots) {
nsTHashSet<nsCString> uniqueSiteOrigins;
for (const auto& root : aRoots) {
root->PreOrderWalk([&](BrowsingContext* aContext) {
WindowGlobalParent* windowGlobalParent =
aContext->Canonical()->GetCurrentWindowGlobal();
if (windowGlobalParent) {
nsIPrincipal* documentPrincipal =
windowGlobalParent->DocumentPrincipal();
bool isContentPrincipal = documentPrincipal->GetIsContentPrincipal();
if (isContentPrincipal) {
nsCString siteOrigin;
documentPrincipal->GetSiteOrigin(siteOrigin);
uniqueSiteOrigins.Insert(siteOrigin);
}
}
});
}
return uniqueSiteOrigins.Count();
}
void CanonicalBrowsingContext::UpdateMediaControlAction(
const MediaControlAction& aAction) {
if (IsDiscarded()) {
return;
}
ContentMediaControlKeyHandler::HandleMediaControlAction(this, aAction);
Group()->EachParent([&](ContentParent* aParent) {
Unused << aParent->SendUpdateMediaControlAction(this, aAction);
});
}
void CanonicalBrowsingContext::LoadURI(nsIURI* aURI,
const LoadURIOptions& aOptions,
ErrorResult& aError) {
RefPtr<nsDocShellLoadState> loadState;
nsresult rv = nsDocShellLoadState::CreateFromLoadURIOptions(
this, aURI, aOptions, getter_AddRefs(loadState));
MOZ_ASSERT(rv != NS_ERROR_MALFORMED_URI);
if (NS_FAILED(rv)) {
aError.Throw(rv);
return;
}
LoadURI(loadState, true);
}
void CanonicalBrowsingContext::FixupAndLoadURIString(
const nsAString& aURI, const LoadURIOptions& aOptions,
ErrorResult& aError) {
RefPtr<nsDocShellLoadState> loadState;
nsresult rv = nsDocShellLoadState::CreateFromLoadURIOptions(
this, aURI, aOptions, getter_AddRefs(loadState));
if (rv == NS_ERROR_MALFORMED_URI) {
DisplayLoadError(aURI);
return;
}
if (NS_FAILED(rv)) {
aError.Throw(rv);
return;
}
LoadURI(loadState, true);
}
void CanonicalBrowsingContext::GoBack(
const Optional<int32_t>& aCancelContentJSEpoch,
bool aRequireUserInteraction, bool aUserActivation) {
if (IsDiscarded()) {
return;
}
// Stop any known network loads if necessary.
if (mCurrentLoad) {
mCurrentLoad->Cancel(NS_BINDING_CANCELLED_OLD_LOAD, ""_ns);
}
if (nsDocShell* docShell = nsDocShell::Cast(GetDocShell())) {
if (aCancelContentJSEpoch.WasPassed()) {
docShell->SetCancelContentJSEpoch(aCancelContentJSEpoch.Value());
}
docShell->GoBack(aRequireUserInteraction, aUserActivation);
} else if (ContentParent* cp = GetContentParent()) {
Maybe<int32_t> cancelContentJSEpoch;
if (aCancelContentJSEpoch.WasPassed()) {
cancelContentJSEpoch = Some(aCancelContentJSEpoch.Value());
}
Unused << cp->SendGoBack(this, cancelContentJSEpoch,
aRequireUserInteraction, aUserActivation);
}
}
void CanonicalBrowsingContext::GoForward(
const Optional<int32_t>& aCancelContentJSEpoch,
bool aRequireUserInteraction, bool aUserActivation) {
if (IsDiscarded()) {
return;
}
// Stop any known network loads if necessary.
if (mCurrentLoad) {
mCurrentLoad->Cancel(NS_BINDING_CANCELLED_OLD_LOAD, ""_ns);
}
if (auto* docShell = nsDocShell::Cast(GetDocShell())) {
if (aCancelContentJSEpoch.WasPassed()) {
docShell->SetCancelContentJSEpoch(aCancelContentJSEpoch.Value());
}
docShell->GoForward(aRequireUserInteraction, aUserActivation);
} else if (ContentParent* cp = GetContentParent()) {
Maybe<int32_t> cancelContentJSEpoch;
if (aCancelContentJSEpoch.WasPassed()) {
cancelContentJSEpoch.emplace(aCancelContentJSEpoch.Value());
}
Unused << cp->SendGoForward(this, cancelContentJSEpoch,
aRequireUserInteraction, aUserActivation);
}
}
void CanonicalBrowsingContext::GoToIndex(
int32_t aIndex, const Optional<int32_t>& aCancelContentJSEpoch,
bool aUserActivation) {
if (IsDiscarded()) {
return;
}
// Stop any known network loads if necessary.
if (mCurrentLoad) {
mCurrentLoad->Cancel(NS_BINDING_CANCELLED_OLD_LOAD, ""_ns);
}
if (auto* docShell = nsDocShell::Cast(GetDocShell())) {
if (aCancelContentJSEpoch.WasPassed()) {
docShell->SetCancelContentJSEpoch(aCancelContentJSEpoch.Value());
}
docShell->GotoIndex(aIndex, aUserActivation);
} else if (ContentParent* cp = GetContentParent()) {
Maybe<int32_t> cancelContentJSEpoch;
if (aCancelContentJSEpoch.WasPassed()) {
cancelContentJSEpoch.emplace(aCancelContentJSEpoch.Value());
}
Unused << cp->SendGoToIndex(this, aIndex, cancelContentJSEpoch,
aUserActivation);
}
}
void CanonicalBrowsingContext::Reload(uint32_t aReloadFlags) {
if (IsDiscarded()) {
return;
}
// Stop any known network loads if necessary.
if (mCurrentLoad) {
mCurrentLoad->Cancel(NS_BINDING_CANCELLED_OLD_LOAD, ""_ns);
}
if (auto* docShell = nsDocShell::Cast(GetDocShell())) {
docShell->Reload(aReloadFlags);
} else if (ContentParent* cp = GetContentParent()) {
Unused << cp->SendReload(this, aReloadFlags);
}
}
void CanonicalBrowsingContext::Stop(uint32_t aStopFlags) {
if (IsDiscarded()) {
return;
}
// Stop any known network loads if necessary.
if (mCurrentLoad && (aStopFlags & nsIWebNavigation::STOP_NETWORK)) {
mCurrentLoad->Cancel(NS_BINDING_ABORTED,
"CanonicalBrowsingContext::Stop"_ns);
}
// Ask the docshell to stop to handle loads that haven't
// yet reached here, as well as non-network activity.
if (auto* docShell = nsDocShell::Cast(GetDocShell())) {
docShell->Stop(aStopFlags);
} else if (ContentParent* cp = GetContentParent()) {
Unused << cp->SendStopLoad(this, aStopFlags);
}
}
void CanonicalBrowsingContext::PendingRemotenessChange::ProcessLaunched() {
if (!mPromise) {
return;
}
if (mContentParent) {
// If our new content process is still unloading from a previous process
// switch, wait for that unload to complete before continuing.
auto found = mTarget->FindUnloadingHost(mContentParent->ChildID());
if (found != mTarget->mUnloadingHosts.end()) {
found->mCallbacks.AppendElement(
[self = RefPtr{this}]() { self->ProcessReady(); });
return;
}
}
ProcessReady();
}
void CanonicalBrowsingContext::PendingRemotenessChange::ProcessReady() {
if (!mPromise) {
return;
}
MOZ_ASSERT(!mProcessReady);
mProcessReady = true;
MaybeFinish();
}
void CanonicalBrowsingContext::PendingRemotenessChange::MaybeFinish() {
if (!mPromise) {
return;
}
if (!mProcessReady || mWaitingForPrepareToChange) {
return;
}
// If this BrowsingContext is embedded within the parent process, perform the
// process switch directly.
nsresult rv = mTarget->IsTopContent() ? FinishTopContent() : FinishSubframe();
if (NS_FAILED(rv)) {
NS_WARNING("Error finishing PendingRemotenessChange!");
Cancel(rv);
} else {
Clear();
}
}
// Logic for finishing a toplevel process change embedded within the parent
// process. Due to frontend integration the logic differs substantially from
// subframe process switches, and is handled separately.
nsresult CanonicalBrowsingContext::PendingRemotenessChange::FinishTopContent() {
MOZ_DIAGNOSTIC_ASSERT(mTarget->IsTop(),
"We shouldn't be trying to change the remoteness of "
"non-remote iframes");
// Abort if our ContentParent died while process switching.
if (mContentParent && NS_WARN_IF(mContentParent->IsShuttingDown())) {
return NS_ERROR_FAILURE;
}
// While process switching, we need to check if any of our ancestors are
// discarded or no longer current, in which case the process switch needs to
// be aborted.
RefPtr<CanonicalBrowsingContext> target(mTarget);
if (target->IsDiscarded() || !target->AncestorsAreCurrent()) {
return NS_ERROR_FAILURE;
}
Element* browserElement = target->GetEmbedderElement();
if (!browserElement) {
return NS_ERROR_FAILURE;
}
nsCOMPtr<nsIBrowser> browser = browserElement->AsBrowser();
if (!browser) {
return NS_ERROR_FAILURE;
}
RefPtr<nsFrameLoaderOwner> frameLoaderOwner = do_QueryObject(browserElement);
MOZ_RELEASE_ASSERT(frameLoaderOwner,
"embedder browser must be nsFrameLoaderOwner");
// If we're process switching a browsing context in private browsing
// mode we might decrease the private browsing count to '0', which
// would make us fire "last-pb-context-exited" and drop the private
// session. To prevent that we artificially increment the number of
// private browsing contexts with '1' until the process switch is done.
bool usePrivateBrowsing = mTarget->UsePrivateBrowsing();
if (usePrivateBrowsing) {
IncreasePrivateCount();
}
auto restorePrivateCount = MakeScopeExit([usePrivateBrowsing]() {
if (usePrivateBrowsing) {
DecreasePrivateCount();
}
});
// Tell frontend code that this browser element is about to change process.
nsresult rv = browser->BeforeChangeRemoteness();
if (NS_FAILED(rv)) {
return rv;
}
// Some frontend code checks the value of the `remote` attribute on the
// browser to determine if it is remote, so update the value.
browserElement->SetAttr(kNameSpaceID_None, nsGkAtoms::remote,
mContentParent ? u"true"_ns : u"false"_ns,
/* notify */ true);
// The process has been created, hand off to nsFrameLoaderOwner to finish
// the process switch.
ErrorResult error;
frameLoaderOwner->ChangeRemotenessToProcess(mContentParent, mOptions,
mSpecificGroup, error);
if (error.Failed()) {
return error.StealNSResult();
}
// Tell frontend the load is done.
bool loadResumed = false;
rv = browser->FinishChangeRemoteness(mPendingSwitchId, &loadResumed);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
// We did it! The process switch is complete.
RefPtr<nsFrameLoader> frameLoader = frameLoaderOwner->GetFrameLoader();
RefPtr<BrowserParent> newBrowser = frameLoader->GetBrowserParent();
if (!newBrowser) {
if (mContentParent) {
// Failed to create the BrowserParent somehow! Abort the process switch
// attempt.
return NS_ERROR_UNEXPECTED;
}
if (!loadResumed) {
RefPtr<nsDocShell> newDocShell = frameLoader->GetDocShell(error);
if (error.Failed()) {
return error.StealNSResult();
}
rv = newDocShell->ResumeRedirectedLoad(mPendingSwitchId,
/* aHistoryIndex */ -1);
if (NS_FAILED(rv)) {
return rv;
}
}
} else if (!loadResumed) {
newBrowser->ResumeLoad(mPendingSwitchId);
}
mPromise->Resolve(newBrowser, __func__);
return NS_OK;
}
nsresult CanonicalBrowsingContext::PendingRemotenessChange::FinishSubframe() {
MOZ_DIAGNOSTIC_ASSERT(!mOptions.mReplaceBrowsingContext,
"Cannot replace BC for subframe");
MOZ_DIAGNOSTIC_ASSERT(!mTarget->IsTop());
// While process switching, we need to check if any of our ancestors are
// discarded or no longer current, in which case the process switch needs to
// be aborted.
RefPtr<CanonicalBrowsingContext> target(mTarget);
if (target->IsDiscarded() || !target->AncestorsAreCurrent()) {
return NS_ERROR_FAILURE;
}
if (NS_WARN_IF(!mContentParent)) {
return NS_ERROR_FAILURE;
}
RefPtr<WindowGlobalParent> embedderWindow = target->GetParentWindowContext();
if (NS_WARN_IF(!embedderWindow) || NS_WARN_IF(!embedderWindow->CanSend())) {
return NS_ERROR_FAILURE;
}
RefPtr<BrowserParent> embedderBrowser = embedderWindow->GetBrowserParent();
if (NS_WARN_IF(!embedderBrowser)) {
return NS_ERROR_FAILURE;
}
// If we're creating a new remote browser, and the host process is already
// dead, abort the process switch.
if (mContentParent != embedderBrowser->Manager() &&
NS_WARN_IF(mContentParent->IsShuttingDown())) {
return NS_ERROR_FAILURE;
}
RefPtr<BrowserParent> oldBrowser = target->GetBrowserParent();
target->SetCurrentBrowserParent(nullptr);
// If we were in a remote frame, trigger unloading of the remote window. The
// previous BrowserParent is registered in `mUnloadingHosts` and will only be
// cleared when the BrowserParent is fully destroyed.
bool wasRemote = oldBrowser && oldBrowser->GetBrowsingContext() == target;
if (wasRemote) {
MOZ_DIAGNOSTIC_ASSERT(oldBrowser != embedderBrowser);
MOZ_DIAGNOSTIC_ASSERT(oldBrowser->IsDestroyed() ||
oldBrowser->GetBrowserBridgeParent());
// `oldBrowser` will clear the `UnloadingHost` status once the actor has
// been destroyed.
if (oldBrowser->CanSend()) {
target->StartUnloadingHost(oldBrowser->Manager()->ChildID());
Unused << oldBrowser->SendWillChangeProcess();
oldBrowser->Destroy();
}
}
// Update which process is considered the current owner
target->SetOwnerProcessId(mContentParent->ChildID());
// If we're switching from remote to local, we don't need to create a
// BrowserBridge, and can instead perform the switch directly.
if (mContentParent == embedderBrowser->Manager()) {
MOZ_DIAGNOSTIC_ASSERT(
mPendingSwitchId,
"We always have a PendingSwitchId, except for print-preview loads, "
"which will never perform a process-switch to being in-process with "
"their embedder");
MOZ_DIAGNOSTIC_ASSERT(wasRemote,
"Attempt to process-switch from local to local?");
target->SetCurrentBrowserParent(embedderBrowser);
Unused << embedderWindow->SendMakeFrameLocal(target, mPendingSwitchId);
mPromise->Resolve(embedderBrowser, __func__);
return NS_OK;
}
// The BrowsingContext will be remote, either as an already-remote frame
// changing processes, or as a local frame becoming remote. Construct a new
// BrowserBridgeParent to host the remote content.
target->SetCurrentBrowserParent(nullptr);
MOZ_DIAGNOSTIC_ASSERT(target->UseRemoteTabs() && target->UseRemoteSubframes(),
"Not supported without fission");
uint32_t chromeFlags = nsIWebBrowserChrome::CHROME_REMOTE_WINDOW |
nsIWebBrowserChrome::CHROME_FISSION_WINDOW;
if (target->UsePrivateBrowsing()) {
chromeFlags |= nsIWebBrowserChrome::CHROME_PRIVATE_WINDOW;
}
nsCOMPtr<nsIPrincipal> initialPrincipal =
NullPrincipal::Create(target->OriginAttributesRef());
WindowGlobalInit windowInit =
WindowGlobalActor::AboutBlankInitializer(target, initialPrincipal);
// Create and initialize our new BrowserBridgeParent.
TabId tabId(nsContentUtils::GenerateTabId());
RefPtr<BrowserBridgeParent> bridge = new BrowserBridgeParent();
nsresult rv = bridge->InitWithProcess(embedderBrowser, mContentParent,
windowInit, chromeFlags, tabId);
if (NS_WARN_IF(NS_FAILED(rv))) {
// If we've already destroyed our previous document, make a best-effort
// attempt to recover from this failure and show the crashed tab UI. We only
// do this in the previously-remote case, as previously in-process frames
// will have their navigation cancelled, and will remain visible.
if (wasRemote) {
target->ShowSubframeCrashedUI(oldBrowser->GetBrowserBridgeParent());
}
return rv;
}
// Tell the embedder process a remoteness change is in-process. When this is
// acknowledged, reset the in-flight ID if it used to be an in-process load.
RefPtr<BrowserParent> newBrowser = bridge->GetBrowserParent();
{
// If we weren't remote, mark our embedder window browser as unloading until
// our embedder process has acked our MakeFrameRemote message.
Maybe<uint64_t> clearChildID;
if (!wasRemote) {
clearChildID = Some(embedderBrowser->Manager()->ChildID());
target->StartUnloadingHost(*clearChildID);
}
auto callback = [target, clearChildID](auto&&) {
if (clearChildID) {
target->ClearUnloadingHost(*clearChildID);
}
};
ManagedEndpoint<PBrowserBridgeChild> endpoint =
embedderBrowser->OpenPBrowserBridgeEndpoint(bridge);
MOZ_DIAGNOSTIC_ASSERT(endpoint.IsValid());
embedderWindow->SendMakeFrameRemote(target, std::move(endpoint), tabId,
newBrowser->GetLayersId(), callback,
callback);
}
// Resume the pending load in our new process.
if (mPendingSwitchId) {
newBrowser->ResumeLoad(mPendingSwitchId);
}
// We did it! The process switch is complete.
mPromise->Resolve(newBrowser, __func__);
return NS_OK;
}
void CanonicalBrowsingContext::PendingRemotenessChange::Cancel(nsresult aRv) {
if (!mPromise) {
return;
}
mPromise->Reject(aRv, __func__);
Clear();
}
void CanonicalBrowsingContext::PendingRemotenessChange::Clear() {
// Make sure we don't die while we're doing cleanup.
RefPtr<PendingRemotenessChange> kungFuDeathGrip(this);
if (mTarget) {
MOZ_DIAGNOSTIC_ASSERT(mTarget->mPendingRemotenessChange == this);
mTarget->mPendingRemotenessChange = nullptr;
}
// When this PendingRemotenessChange was created, it was given a
// `mContentParent`.
if (mContentParent) {
mContentParent->RemoveKeepAlive();
mContentParent = nullptr;
}
// If we were given a specific group, stop keeping that group alive manually.
if (mSpecificGroup) {
mSpecificGroup->RemoveKeepAlive();
mSpecificGroup = nullptr;
}
mPromise = nullptr;
mTarget = nullptr;
}
CanonicalBrowsingContext::PendingRemotenessChange::PendingRemotenessChange(
CanonicalBrowsingContext* aTarget, RemotenessPromise::Private* aPromise,
uint64_t aPendingSwitchId, const NavigationIsolationOptions& aOptions)
: mTarget(aTarget),
mPromise(aPromise),
mPendingSwitchId(aPendingSwitchId),
mOptions(aOptions) {}
CanonicalBrowsingContext::PendingRemotenessChange::~PendingRemotenessChange() {
MOZ_ASSERT(!mPromise && !mTarget && !mContentParent && !mSpecificGroup,
"should've already been Cancel() or Complete()-ed");
}
BrowserParent* CanonicalBrowsingContext::GetBrowserParent() const {
return mCurrentBrowserParent;
}
void CanonicalBrowsingContext::SetCurrentBrowserParent(
BrowserParent* aBrowserParent) {
MOZ_DIAGNOSTIC_ASSERT(!mCurrentBrowserParent || !aBrowserParent,
"BrowsingContext already has a current BrowserParent!");
MOZ_DIAGNOSTIC_ASSERT_IF(aBrowserParent, aBrowserParent->CanSend());
MOZ_DIAGNOSTIC_ASSERT_IF(aBrowserParent,
aBrowserParent->Manager()->ChildID() == mProcessId);
// BrowserParent must either be directly for this BrowsingContext, or the
// manager out our embedder WindowGlobal.
MOZ_DIAGNOSTIC_ASSERT_IF(
aBrowserParent && aBrowserParent->GetBrowsingContext() != this,
GetParentWindowContext() &&
GetParentWindowContext()->Manager() == aBrowserParent);
mCurrentBrowserParent = aBrowserParent;
}
RefPtr<CanonicalBrowsingContext::RemotenessPromise>
CanonicalBrowsingContext::ChangeRemoteness(
const NavigationIsolationOptions& aOptions, uint64_t aPendingSwitchId) {
MOZ_DIAGNOSTIC_ASSERT(IsContent(),
"cannot change the process of chrome contexts");
MOZ_DIAGNOSTIC_ASSERT(
IsTop() == IsEmbeddedInProcess(0),
"toplevel content must be embedded in the parent process");
MOZ_DIAGNOSTIC_ASSERT(!aOptions.mReplaceBrowsingContext || IsTop(),
"Cannot replace BrowsingContext for subframes");
MOZ_DIAGNOSTIC_ASSERT(
aOptions.mSpecificGroupId == 0 || aOptions.mReplaceBrowsingContext,
"Cannot specify group ID unless replacing BC");
MOZ_DIAGNOSTIC_ASSERT(aPendingSwitchId || !IsTop(),
"Should always have aPendingSwitchId for top-level "
"frames");
if (!AncestorsAreCurrent()) {
NS_WARNING("An ancestor context is no longer current");
return RemotenessPromise::CreateAndReject(NS_ERROR_FAILURE, __func__);
}
// Ensure our embedder hasn't been destroyed or asked to shutdown already.
RefPtr<WindowGlobalParent> embedderWindowGlobal = GetEmbedderWindowGlobal();
if (!embedderWindowGlobal) {
NS_WARNING("Non-embedded BrowsingContext");
return RemotenessPromise::CreateAndReject(NS_ERROR_UNEXPECTED, __func__);
}
if (!embedderWindowGlobal->CanSend()) {
NS_WARNING("Embedder already been destroyed.");
return RemotenessPromise::CreateAndReject(NS_ERROR_NOT_AVAILABLE, __func__);
}
RefPtr<BrowserParent> embedderBrowser =
embedderWindowGlobal->GetBrowserParent();
if (embedderBrowser && embedderBrowser->Manager()->IsShuttingDown()) {
NS_WARNING("Embedder already asked to shutdown.");
return RemotenessPromise::CreateAndReject(NS_ERROR_NOT_AVAILABLE, __func__);
}
if (aOptions.mRemoteType.IsEmpty() && (!IsTop() || !GetEmbedderElement())) {
NS_WARNING("Cannot load non-remote subframes");
return RemotenessPromise::CreateAndReject(NS_ERROR_FAILURE, __func__);
}
// Cancel ongoing remoteness changes.
if (mPendingRemotenessChange) {
mPendingRemotenessChange->Cancel(NS_ERROR_ABORT);
MOZ_DIAGNOSTIC_ASSERT(!mPendingRemotenessChange, "Should have cleared");
}
auto promise = MakeRefPtr<RemotenessPromise::Private>(__func__);
promise->UseDirectTaskDispatch(__func__);
RefPtr<PendingRemotenessChange> change =
new PendingRemotenessChange(this, promise, aPendingSwitchId, aOptions);
mPendingRemotenessChange = change;
// If a specific BrowsingContextGroup ID was specified for this load, make
// sure to keep it alive until the process switch is completed.
if (aOptions.mSpecificGroupId) {
change->mSpecificGroup =
BrowsingContextGroup::GetOrCreate(aOptions.mSpecificGroupId);
change->mSpecificGroup->AddKeepAlive();
}
// Call `prepareToChangeRemoteness` in parallel with starting a new process
// for <browser> loads.
if (IsTop() && GetEmbedderElement()) {
nsCOMPtr<nsIBrowser> browser = GetEmbedderElement()->AsBrowser();
if (!browser) {
change->Cancel(NS_ERROR_FAILURE);
return promise.forget();
}
RefPtr<Promise> blocker;
nsresult rv = browser->PrepareToChangeRemoteness(getter_AddRefs(blocker));
if (NS_FAILED(rv)) {
change->Cancel(rv);
return promise.forget();
}
// Mark prepareToChange as unresolved, and wait for it to become resolved.
if (blocker && blocker->State() != Promise::PromiseState::Resolved) {
change->mWaitingForPrepareToChange = true;
RefPtr<DomPromiseListener> listener = new DomPromiseListener(
[change](JSContext* aCx, JS::Handle<JS::Value> aValue) {
change->mWaitingForPrepareToChange = false;
change->MaybeFinish();
},
[change](nsresult aRv) { change->Cancel(aRv); });
blocker->AppendNativeHandler(listener);
}
}
// Switching a subframe to be local within it's embedding process.
if (embedderBrowser &&
aOptions.mRemoteType == embedderBrowser->Manager()->GetRemoteType()) {
MOZ_DIAGNOSTIC_ASSERT(
aPendingSwitchId,
"We always have a PendingSwitchId, except for print-preview loads, "
"which will never perform a process-switch to being in-process with "
"their embedder");
MOZ_DIAGNOSTIC_ASSERT(!aOptions.mReplaceBrowsingContext);
MOZ_DIAGNOSTIC_ASSERT(!aOptions.mRemoteType.IsEmpty());
MOZ_DIAGNOSTIC_ASSERT(!change->mWaitingForPrepareToChange);
MOZ_DIAGNOSTIC_ASSERT(!change->mSpecificGroup);
// Switching to local, so we don't need to create a new process, and will
// instead use our embedder process.
change->mContentParent = embedderBrowser->Manager();
change->mContentParent->AddKeepAlive();
change->ProcessLaunched();
return promise.forget();
}
// Switching to the parent process.
if (aOptions.mRemoteType.IsEmpty()) {
change->ProcessLaunched();
return promise.forget();
}
// If we're aiming to end up in a new process of the same type as our old
// process, and then putting our previous document in the BFCache, try to stay
// in the same process to avoid creating new processes unnecessarily.
RefPtr<ContentParent> existingProcess = GetContentParent();
if (existingProcess && !existingProcess->IsShuttingDown() &&
aOptions.mReplaceBrowsingContext &&
aOptions.mRemoteType == existingProcess->GetRemoteType()) {
change->mContentParent = existingProcess;
change->mContentParent->AddKeepAlive();
change->ProcessLaunched();
return promise.forget();
}
// Try to predict which BrowsingContextGroup will be used for the final load
// in this BrowsingContext. This has to be accurate if switching into an
// existing group, as it will control what pool of processes will be used
// for process selection.
//
// It's _technically_ OK to provide a group here if we're actually going to
// switch into a brand new group, though it's sub-optimal, as it can
// restrict the set of processes we're using.
BrowsingContextGroup* finalGroup =
aOptions.mReplaceBrowsingContext ? change->mSpecificGroup.get() : Group();
bool preferUsed =
StaticPrefs::browser_tabs_remote_subframesPreferUsed() && !IsTop();
change->mContentParent = ContentParent::GetNewOrUsedLaunchingBrowserProcess(
/* aRemoteType = */ aOptions.mRemoteType,
/* aGroup = */ finalGroup,
/* aPriority = */ hal::PROCESS_PRIORITY_FOREGROUND,
/* aPreferUsed = */ preferUsed);
if (!change->mContentParent) {
change->Cancel(NS_ERROR_FAILURE);
return promise.forget();
}
// Add a KeepAlive used by this ContentParent, which will be cleared when
// the change is complete. This should prevent the process dying before
// we're ready to use it.
change->mContentParent->AddKeepAlive();
if (change->mContentParent->IsLaunching()) {
change->mContentParent->WaitForLaunchAsync()->Then(
GetMainThreadSerialEventTarget(), __func__,
[change](ContentParent*) { change->ProcessLaunched(); },
[change]() { change->Cancel(NS_ERROR_FAILURE); });
} else {
change->ProcessLaunched();
}
return promise.forget();
}
void CanonicalBrowsingContext::MaybeSetPermanentKey(Element* aEmbedder) {
MOZ_DIAGNOSTIC_ASSERT(IsTop());
if (aEmbedder) {
if (nsCOMPtr<nsIBrowser> browser = aEmbedder->AsBrowser()) {
JS::Rooted<JS::Value> key(RootingCx());
if (NS_SUCCEEDED(browser->GetPermanentKey(&key)) && key.isObject()) {
mPermanentKey = key;
}
}
}
}
MediaController* CanonicalBrowsingContext::GetMediaController() {
// We would only create one media controller per tab, so accessing the
// controller via the top-level browsing context.
if (GetParent()) {
return Cast(Top())->GetMediaController();
}
MOZ_ASSERT(!GetParent(),
"Must access the controller from the top-level browsing context!");
// Only content browsing context can create media controller, we won't create
// controller for chrome document, such as the browser UI.
if (!mTabMediaController && !IsDiscarded() && IsContent()) {
mTabMediaController = new MediaController(Id());
}
return mTabMediaController;
}
bool CanonicalBrowsingContext::HasCreatedMediaController() const {
return !!mTabMediaController;
}
bool CanonicalBrowsingContext::SupportsLoadingInParent(
nsDocShellLoadState* aLoadState, uint64_t* aOuterWindowId) {
// We currently don't support initiating loads in the parent when they are
// watched by devtools. This is because devtools tracks loads using content
// process notifications, which happens after the load is initiated in this
// case. Devtools clears all prior requests when it detects a new navigation,
// so it drops the main document load that happened here.
if (WatchedByDevTools()) {
return false;
}
// Session-history-in-parent implementation relies currently on getting a
// round trip through a child process.
if (aLoadState->LoadIsFromSessionHistory()) {
return false;
}
// DocumentChannel currently only supports connecting channels into the
// content process, so we can only support schemes that will always be loaded
// there for now. Restrict to just http(s) for simplicity.
if (!net::SchemeIsHTTP(aLoadState->URI()) &&
!net::SchemeIsHTTPS(aLoadState->URI())) {
return false;
}
if (WindowGlobalParent* global = GetCurrentWindowGlobal()) {
nsCOMPtr<nsIURI> currentURI = global->GetDocumentURI();
if (currentURI) {
bool newURIHasRef = false;
aLoadState->URI()->GetHasRef(&newURIHasRef);
bool equalsExceptRef = false;
aLoadState->URI()->EqualsExceptRef(currentURI, &equalsExceptRef);
if (equalsExceptRef && newURIHasRef) {
// This navigation is same-doc WRT the current one, we should pass it
// down to the docshell to be handled.
return false;
}
}
// If the current document has a beforeunload listener, then we need to
// start the load in that process after we fire the event.
if (global->HasBeforeUnload()) {
return false;
}
*aOuterWindowId = global->OuterWindowId();
}
return true;
}
bool CanonicalBrowsingContext::LoadInParent(nsDocShellLoadState* aLoadState,
bool aSetNavigating) {
// We currently only support starting loads directly from the
// CanonicalBrowsingContext for top-level BCs.
// We currently only support starting loads directly from the
// CanonicalBrowsingContext for top-level BCs.
if (!IsTopContent() || !GetContentParent() ||
!StaticPrefs::browser_tabs_documentchannel_parent_controlled()) {
return false;
}
uint64_t outerWindowId = 0;
if (!SupportsLoadingInParent(aLoadState, &outerWindowId)) {
return false;
}
MOZ_ASSERT(!net::SchemeIsJavascript(aLoadState->URI()));
MOZ_ALWAYS_SUCCEEDS(
SetParentInitiatedNavigationEpoch(++gParentInitiatedNavigationEpoch));
// Note: If successful, this will recurse into StartDocumentLoad and
// set mCurrentLoad to the DocumentLoadListener instance created.
// Ideally in the future we will only start loads from here, and we can
// just set this directly instead.
return net::DocumentLoadListener::LoadInParent(this, aLoadState,
aSetNavigating);
}
bool CanonicalBrowsingContext::AttemptSpeculativeLoadInParent(
nsDocShellLoadState* aLoadState) {
// We currently only support starting loads directly from the
// CanonicalBrowsingContext for top-level BCs.
// We currently only support starting loads directly from the
// CanonicalBrowsingContext for top-level BCs.
if (!IsTopContent() || !GetContentParent() ||
(StaticPrefs::browser_tabs_documentchannel_parent_controlled())) {
return false;
}
uint64_t outerWindowId = 0;
if (!SupportsLoadingInParent(aLoadState, &outerWindowId)) {
return false;
}
// If we successfully open the DocumentChannel, then it'll register
// itself using aLoadIdentifier and be kept alive until it completes
// loading.
return net::DocumentLoadListener::SpeculativeLoadInParent(this, aLoadState);
}
bool CanonicalBrowsingContext::StartDocumentLoad(
net::DocumentLoadListener* aLoad) {
// If we're controlling loads from the parent, then starting a new load means
// that we need to cancel any existing ones.
if (StaticPrefs::browser_tabs_documentchannel_parent_controlled() &&
mCurrentLoad) {
// Make sure we are not loading a javascript URI.
MOZ_ASSERT(!aLoad->IsLoadingJSURI());
// If we want to do a download, don't cancel the current navigation.
if (!aLoad->IsDownload()) {
mCurrentLoad->Cancel(NS_BINDING_CANCELLED_OLD_LOAD, ""_ns);
}
}
mCurrentLoad = aLoad;
if (NS_FAILED(SetCurrentLoadIdentifier(Some(aLoad->GetLoadIdentifier())))) {
mCurrentLoad = nullptr;
return false;
}
return true;
}
void CanonicalBrowsingContext::EndDocumentLoad(bool aContinueNavigating) {
mCurrentLoad = nullptr;
if (!aContinueNavigating) {
// Resetting the current load identifier on a discarded context
// has no effect when a document load has finished.
Unused << SetCurrentLoadIdentifier(Nothing());
}
}
already_AddRefed<nsIURI> CanonicalBrowsingContext::GetCurrentURI() const {
nsCOMPtr<nsIURI> currentURI;
if (nsIDocShell* docShell = GetDocShell()) {
MOZ_ALWAYS_SUCCEEDS(
nsDocShell::Cast(docShell)->GetCurrentURI(getter_AddRefs(currentURI)));
} else {
currentURI = mCurrentRemoteURI;
}
return currentURI.forget();
}
void CanonicalBrowsingContext::SetCurrentRemoteURI(nsIURI* aCurrentRemoteURI) {
MOZ_ASSERT(!GetDocShell());
mCurrentRemoteURI = aCurrentRemoteURI;
}
void CanonicalBrowsingContext::ResetSHEntryHasUserInteractionCache() {
WindowContext* topWc = GetTopWindowContext();
if (topWc && !topWc->IsDiscarded()) {
MOZ_ALWAYS_SUCCEEDS(topWc->SetSHEntryHasUserInteraction(false));
}
}
void CanonicalBrowsingContext::HistoryCommitIndexAndLength() {
nsID changeID = {};
CallerWillNotifyHistoryIndexAndLengthChanges caller(nullptr);
HistoryCommitIndexAndLength(changeID, caller);
}
void CanonicalBrowsingContext::HistoryCommitIndexAndLength(
const nsID& aChangeID,
const CallerWillNotifyHistoryIndexAndLengthChanges& aProofOfCaller) {
if (!IsTop()) {
Cast(Top())->HistoryCommitIndexAndLength(aChangeID, aProofOfCaller);
return;
}
nsISHistory* shistory = GetSessionHistory();
if (!shistory) {
return;
}
int32_t index = 0;
shistory->GetIndex(&index);
int32_t length = shistory->GetCount();
GetChildSessionHistory()->SetIndexAndLength(index, length, aChangeID);
shistory->EvictOutOfRangeContentViewers(index);
Group()->EachParent([&](ContentParent* aParent) {
Unused << aParent->SendHistoryCommitIndexAndLength(this, index, length,
aChangeID);
});
}
void CanonicalBrowsingContext::SynchronizeLayoutHistoryState() {
if (mActiveEntry) {
if (IsInProcess()) {
nsIDocShell* docShell = GetDocShell();
if (docShell) {
docShell->PersistLayoutHistoryState();
nsCOMPtr<nsILayoutHistoryState> state;
docShell->GetLayoutHistoryState(getter_AddRefs(state));
if (state) {
mActiveEntry->SetLayoutHistoryState(state);
}
}
} else if (ContentParent* cp = GetContentParent()) {
cp->SendGetLayoutHistoryState(this)->Then(
GetCurrentSerialEventTarget(), __func__,
[activeEntry = mActiveEntry](
const std::tuple<RefPtr<nsILayoutHistoryState>, Maybe<Wireframe>>&
aResult) {
if (std::get<0>(aResult)) {
activeEntry->SetLayoutHistoryState(std::get<0>(aResult));
}
if (std::get<1>(aResult)) {
activeEntry->SetWireframe(std::get<1>(aResult));
}
},
[]() {});
}
}
}
void CanonicalBrowsingContext::ResetScalingZoom() {
// This currently only ever gets called in the parent process, and we
// pass the message on to the WindowGlobalChild for the rootmost browsing
// context.
if (WindowGlobalParent* topWindow = GetTopWindowContext()) {
Unused << topWindow->SendResetScalingZoom();
}
}
void CanonicalBrowsingContext::SetRestoreData(SessionStoreRestoreData* aData,
ErrorResult& aError) {
MOZ_DIAGNOSTIC_ASSERT(aData);
nsCOMPtr<nsIGlobalObject> global = do_QueryInterface(GetParentObject());
RefPtr<Promise> promise = Promise::Create(global, aError);
if (aError.Failed()) {
return;
}
if (NS_WARN_IF(NS_FAILED(SetHasRestoreData(true)))) {
aError.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
return;
}
mRestoreState = new RestoreState();
mRestoreState->mData = aData;
mRestoreState->mPromise = promise;
}
already_AddRefed<Promise> CanonicalBrowsingContext::GetRestorePromise() {
if (mRestoreState) {
return do_AddRef(mRestoreState->mPromise);
}
return nullptr;
}
void CanonicalBrowsingContext::ClearRestoreState() {
if (!mRestoreState) {
MOZ_DIAGNOSTIC_ASSERT(!GetHasRestoreData());
return;
}
if (mRestoreState->mPromise) {
mRestoreState->mPromise->MaybeRejectWithUndefined();
}
mRestoreState = nullptr;
MOZ_ALWAYS_SUCCEEDS(SetHasRestoreData(false));
}
void CanonicalBrowsingContext::RequestRestoreTabContent(
WindowGlobalParent* aWindow) {
MOZ_DIAGNOSTIC_ASSERT(IsTop());
if (IsDiscarded() || !mRestoreState || !mRestoreState->mData) {
return;
}
CanonicalBrowsingContext* context = aWindow->GetBrowsingContext();
MOZ_DIAGNOSTIC_ASSERT(!context->IsDiscarded());
RefPtr<SessionStoreRestoreData> data =
mRestoreState->mData->FindDataForChild(context);
if (context->IsTop()) {
MOZ_DIAGNOSTIC_ASSERT(context == this);
// We need to wait until the appropriate load event has fired before we
// can "complete" the restore process, so if we're holding an empty data
// object, just resolve the promise immediately.
if (mRestoreState->mData->IsEmpty()) {
MOZ_DIAGNOSTIC_ASSERT(!data || data->IsEmpty());
mRestoreState->Resolve();
ClearRestoreState();
return;
}
// Since we're following load event order, we'll only arrive here for a
// toplevel context after we've already sent down data for all child frames,
// so it's safe to clear this reference now. The completion callback below
// relies on the mData field being null to determine if all requests have
// been sent out.
mRestoreState->ClearData();
MOZ_ALWAYS_SUCCEEDS(SetHasRestoreData(false));
}
if (data && !data->IsEmpty()) {
auto onTabRestoreComplete = [self = RefPtr{this},
state = RefPtr{mRestoreState}](auto) {
state->mResolves++;
if (!state->mData && state->mRequests == state->mResolves) {
state->Resolve();
if (state == self->mRestoreState) {
self->ClearRestoreState();
}
}
};
mRestoreState->mRequests++;
if (data->CanRestoreInto(aWindow->GetDocumentURI())) {
if (!aWindow->IsInProcess()) {
aWindow->SendRestoreTabContent(WrapNotNull(data.get()),
onTabRestoreComplete,
onTabRestoreComplete);
return;
}
data->RestoreInto(context);
}
// This must be called both when we're doing an in-process restore, and when
// we didn't do a restore at all due to a URL mismatch.
onTabRestoreComplete(true);
}
}
void CanonicalBrowsingContext::RestoreState::Resolve() {
MOZ_DIAGNOSTIC_ASSERT(mPromise);
mPromise->MaybeResolveWithUndefined();
mPromise = nullptr;
}
nsresult CanonicalBrowsingContext::WriteSessionStorageToSessionStore(
const nsTArray<SSCacheCopy>& aSesssionStorage, uint32_t aEpoch) {
nsCOMPtr<nsISessionStoreFunctions> funcs = do_ImportESModule(
"resource://gre/modules/SessionStoreFunctions.sys.mjs", fallible);
if (!funcs) {
return NS_ERROR_FAILURE;
}
nsCOMPtr<nsIXPConnectWrappedJS> wrapped = do_QueryInterface(funcs);
AutoJSAPI jsapi;
if (!jsapi.Init(wrapped->GetJSObjectGlobal())) {
return NS_ERROR_FAILURE;
}
JS::Rooted<JS::Value> key(jsapi.cx(), Top()->PermanentKey());
Record<nsCString, Record<nsString, nsString>> storage;
JS::Rooted<JS::Value> update(jsapi.cx());
if (!aSesssionStorage.IsEmpty()) {
SessionStoreUtils::ConstructSessionStorageValues(this, aSesssionStorage,
storage);
if (!ToJSValue(jsapi.cx(), storage, &update)) {
return NS_ERROR_FAILURE;
}
} else {
update.setNull();
}
return funcs->UpdateSessionStoreForStorage(Top()->GetEmbedderElement(), this,
key, aEpoch, update);
}
void CanonicalBrowsingContext::UpdateSessionStoreSessionStorage(
const std::function<void()>& aDone) {
if (!StaticPrefs::browser_sessionstore_collect_session_storage_AtStartup()) {
aDone();
return;
}
using DataPromise = BackgroundSessionStorageManager::DataPromise;
BackgroundSessionStorageManager::GetData(
this, StaticPrefs::browser_sessionstore_dom_storage_limit(),
/* aClearSessionStoreTimer = */ true)
->Then(GetCurrentSerialEventTarget(), __func__,
[self = RefPtr{this}, aDone, epoch = GetSessionStoreEpoch()](
const DataPromise::ResolveOrRejectValue& valueList) {
if (valueList.IsResolve()) {
self->WriteSessionStorageToSessionStore(
valueList.ResolveValue(), epoch);
}
aDone();
});
}
/* static */
void CanonicalBrowsingContext::UpdateSessionStoreForStorage(
uint64_t aBrowsingContextId) {
RefPtr<CanonicalBrowsingContext> browsingContext = Get(aBrowsingContextId);
if (!browsingContext) {
return;
}
browsingContext->UpdateSessionStoreSessionStorage([]() {});
}
void CanonicalBrowsingContext::MaybeScheduleSessionStoreUpdate() {
if (!StaticPrefs::browser_sessionstore_platform_collection_AtStartup()) {
return;
}
if (!IsTop()) {
Top()->MaybeScheduleSessionStoreUpdate();
return;
}
if (IsInBFCache()) {
return;
}
if (mSessionStoreSessionStorageUpdateTimer) {
return;
}
if (!StaticPrefs::browser_sessionstore_debug_no_auto_updates()) {
auto result = NS_NewTimerWithFuncCallback(
[](nsITimer*, void* aClosure) {
auto* context = static_cast<CanonicalBrowsingContext*>(aClosure);
context->UpdateSessionStoreSessionStorage([]() {});
},
this, StaticPrefs::browser_sessionstore_interval(),
nsITimer::TYPE_ONE_SHOT,
"CanonicalBrowsingContext::MaybeScheduleSessionStoreUpdate");
if (result.isErr()) {
return;
}
mSessionStoreSessionStorageUpdateTimer = result.unwrap();
}
}
void CanonicalBrowsingContext::CancelSessionStoreUpdate() {
if (mSessionStoreSessionStorageUpdateTimer) {
mSessionStoreSessionStorageUpdateTimer->Cancel();
mSessionStoreSessionStorageUpdateTimer = nullptr;
}
}
void CanonicalBrowsingContext::SetContainerFeaturePolicy(
FeaturePolicy* aContainerFeaturePolicy) {
mContainerFeaturePolicy = aContainerFeaturePolicy;
if (WindowGlobalParent* current = GetCurrentWindowGlobal()) {
Unused << current->SendSetContainerFeaturePolicy(mContainerFeaturePolicy);
}
}
void CanonicalBrowsingContext::SetCrossGroupOpenerId(uint64_t aOpenerId) {
MOZ_DIAGNOSTIC_ASSERT(IsTopContent());
MOZ_DIAGNOSTIC_ASSERT(mCrossGroupOpenerId == 0,
"Can only set CrossGroupOpenerId once");
mCrossGroupOpenerId = aOpenerId;
}
void CanonicalBrowsingContext::SetCrossGroupOpener(
CanonicalBrowsingContext& aCrossGroupOpener, ErrorResult& aRv) {
if (!IsTopContent()) {
aRv.ThrowNotAllowedError(
"Can only set crossGroupOpener on toplevel content");
return;
}
if (mCrossGroupOpenerId != 0) {
aRv.ThrowNotAllowedError("Can only set crossGroupOpener once");
return;
}
SetCrossGroupOpenerId(aCrossGroupOpener.Id());
}
auto CanonicalBrowsingContext::FindUnloadingHost(uint64_t aChildID)
-> nsTArray<UnloadingHost>::iterator {
return std::find_if(
mUnloadingHosts.begin(), mUnloadingHosts.end(),
[&](const auto& host) { return host.mChildID == aChildID; });
}
void CanonicalBrowsingContext::ClearUnloadingHost(uint64_t aChildID) {
// Notify any callbacks which were waiting for the host to finish unloading
// that it has.
auto found = FindUnloadingHost(aChildID);
if (found != mUnloadingHosts.end()) {
auto callbacks = std::move(found->mCallbacks);
mUnloadingHosts.RemoveElementAt(found);
for (const auto& callback : callbacks) {
callback();
}
}
}
void CanonicalBrowsingContext::StartUnloadingHost(uint64_t aChildID) {
MOZ_DIAGNOSTIC_ASSERT(FindUnloadingHost(aChildID) == mUnloadingHosts.end());
mUnloadingHosts.AppendElement(UnloadingHost{aChildID, {}});
}
void CanonicalBrowsingContext::BrowserParentDestroyed(
BrowserParent* aBrowserParent, bool aAbnormalShutdown) {
ClearUnloadingHost(aBrowserParent->Manager()->ChildID());
// Handling specific to when the current BrowserParent has been destroyed.
if (mCurrentBrowserParent == aBrowserParent) {
mCurrentBrowserParent = nullptr;
// If this BrowserParent is for a subframe, attempt to recover from a
// subframe crash by rendering the subframe crashed page in the embedding
// content.
if (aAbnormalShutdown) {
ShowSubframeCrashedUI(aBrowserParent->GetBrowserBridgeParent());
}
}
}
void CanonicalBrowsingContext::ShowSubframeCrashedUI(
BrowserBridgeParent* aBridge) {
if (!aBridge || IsDiscarded() || !aBridge->CanSend()) {
return;
}
MOZ_DIAGNOSTIC_ASSERT(!aBridge->GetBrowsingContext() ||
aBridge->GetBrowsingContext() == this);
// There is no longer a current inner window within this
// BrowsingContext, update the `CurrentInnerWindowId` field to reflect
// this.
MOZ_ALWAYS_SUCCEEDS(SetCurrentInnerWindowId(0));
// The owning process will now be the embedder to render the subframe
// crashed page, switch ownership back over.
SetOwnerProcessId(aBridge->Manager()->Manager()->ChildID());
SetCurrentBrowserParent(aBridge->Manager());
Unused << aBridge->SendSubFrameCrashed();
}
static void LogBFCacheBlockingForDoc(BrowsingContext* aBrowsingContext,
uint32_t aBFCacheCombo, bool aIsSubDoc) {
if (aIsSubDoc) {
nsAutoCString uri("[no uri]");
nsCOMPtr<nsIURI> currentURI =
aBrowsingContext->Canonical()->GetCurrentURI();
if (currentURI) {
uri = currentURI->GetSpecOrDefault();
}
MOZ_LOG(gSHIPBFCacheLog, LogLevel::Debug,
(" ** Blocked for document %s", uri.get()));
}
if (aBFCacheCombo & BFCacheStatus::EVENT_HANDLING_SUPPRESSED) {
MOZ_LOG(gSHIPBFCacheLog, LogLevel::Debug,
(" * event handling suppression"));
}
if (aBFCacheCombo & BFCacheStatus::SUSPENDED) {
MOZ_LOG(gSHIPBFCacheLog, LogLevel::Debug, (" * suspended Window"));
}
if (aBFCacheCombo & BFCacheStatus::UNLOAD_LISTENER) {
MOZ_LOG(gSHIPBFCacheLog, LogLevel::Debug, (" * unload listener"));
}
if (aBFCacheCombo & BFCacheStatus::REQUEST) {
MOZ_LOG(gSHIPBFCacheLog, LogLevel::Debug, (" * requests in the loadgroup"));
}
if (aBFCacheCombo & BFCacheStatus::ACTIVE_GET_USER_MEDIA) {
MOZ_LOG(gSHIPBFCacheLog, LogLevel::Debug, (" * GetUserMedia"));
}
if (aBFCacheCombo & BFCacheStatus::ACTIVE_PEER_CONNECTION) {
MOZ_LOG(gSHIPBFCacheLog, LogLevel::Debug, (" * PeerConnection"));
}
if (aBFCacheCombo & BFCacheStatus::CONTAINS_EME_CONTENT) {
MOZ_LOG(gSHIPBFCacheLog, LogLevel::Debug, (" * EME content"));
}
if (aBFCacheCombo & BFCacheStatus::CONTAINS_MSE_CONTENT) {
MOZ_LOG(gSHIPBFCacheLog, LogLevel::Debug, (" * MSE use"));
}
if (aBFCacheCombo & BFCacheStatus::HAS_ACTIVE_SPEECH_SYNTHESIS) {
MOZ_LOG(gSHIPBFCacheLog, LogLevel::Debug, (" * Speech use"));
}
if (aBFCacheCombo & BFCacheStatus::HAS_USED_VR) {
MOZ_LOG(gSHIPBFCacheLog, LogLevel::Debug, (" * used VR"));
}
if (aBFCacheCombo & BFCacheStatus::BEFOREUNLOAD_LISTENER) {
MOZ_LOG(gSHIPBFCacheLog, LogLevel::Debug, (" * beforeunload listener"));
}
if (aBFCacheCombo & BFCacheStatus::ACTIVE_LOCK) {
MOZ_LOG(gSHIPBFCacheLog, LogLevel::Debug, (" * has active Web Locks"));
}
}
bool CanonicalBrowsingContext::AllowedInBFCache(
const Maybe<uint64_t>& aChannelId, nsIURI* aNewURI) {
if (MOZ_UNLIKELY(MOZ_LOG_TEST(gSHIPBFCacheLog, LogLevel::Debug))) {
nsAutoCString uri("[no uri]");
nsCOMPtr<nsIURI> currentURI = GetCurrentURI();
if (currentURI) {
uri = currentURI->GetSpecOrDefault();
}
MOZ_LOG(gSHIPBFCacheLog, LogLevel::Debug, ("Checking %s", uri.get()));
}
if (IsInProcess()) {
return false;
}
uint32_t bfcacheCombo = 0;
if (mRestoreState) {
bfcacheCombo |= BFCacheStatus::RESTORING;
MOZ_LOG(gSHIPBFCacheLog, LogLevel::Debug, (" * during session restore"));
}
if (Group()->Toplevels().Length() > 1) {
bfcacheCombo |= BFCacheStatus::NOT_ONLY_TOPLEVEL_IN_BCG;
MOZ_LOG(gSHIPBFCacheLog, LogLevel::Debug,
(" * auxiliary BrowsingContexts"));
}
// There are not a lot of about:* pages that are allowed to load in
// subframes, so it's OK to allow those few about:* pages enter BFCache.
MOZ_ASSERT(IsTop(), "Trying to put a non top level BC into BFCache");
WindowGlobalParent* wgp = GetCurrentWindowGlobal();
if (wgp && wgp->GetDocumentURI()) {
nsCOMPtr<nsIURI> currentURI = wgp->GetDocumentURI();
// Exempt about:* pages from bfcache, with the exception of about:blank
if (currentURI->SchemeIs("about") &&
!currentURI->GetSpecOrDefault().EqualsLiteral("about:blank")) {
bfcacheCombo |= BFCacheStatus::ABOUT_PAGE;
MOZ_LOG(gSHIPBFCacheLog, LogLevel::Debug, (" * about:* page"));
}
if (aNewURI) {
bool equalUri = false;
aNewURI->Equals(currentURI, &equalUri);
if (equalUri) {
// When loading the same uri, disable bfcache so that
// nsDocShell::OnNewURI transforms the load to LOAD_NORMAL_REPLACE.
return false;
}
}
}
// For telemetry we're collecting all the flags for all the BCs hanging
// from this top-level BC.
PreOrderWalk([&](BrowsingContext* aBrowsingContext) {
WindowGlobalParent* wgp =
aBrowsingContext->Canonical()->GetCurrentWindowGlobal();
uint32_t subDocBFCacheCombo = wgp ? wgp->GetBFCacheStatus() : 0;
if (wgp) {
const Maybe<uint64_t>& singleChannelId = wgp->GetSingleChannelId();
if (singleChannelId.isSome()) {
if (singleChannelId.value() == 0 || aChannelId.isNothing() ||
singleChannelId.value() != aChannelId.value()) {
subDocBFCacheCombo |= BFCacheStatus::REQUEST;
}
}
}
if (MOZ_UNLIKELY(MOZ_LOG_TEST(gSHIPBFCacheLog, LogLevel::Debug))) {
LogBFCacheBlockingForDoc(aBrowsingContext, subDocBFCacheCombo,
aBrowsingContext != this);
}
bfcacheCombo |= subDocBFCacheCombo;
});
nsDocShell::ReportBFCacheComboTelemetry(bfcacheCombo);
if (MOZ_UNLIKELY(MOZ_LOG_TEST(gSHIPBFCacheLog, LogLevel::Debug))) {
nsAutoCString uri("[no uri]");
nsCOMPtr<nsIURI> currentURI = GetCurrentURI();
if (currentURI) {
uri = currentURI->GetSpecOrDefault();
}
MOZ_LOG(gSHIPBFCacheLog, LogLevel::Debug,
(" +> %s %s be blocked from going into the BFCache", uri.get(),
bfcacheCombo == 0 ? "shouldn't" : "should"));
}
if (StaticPrefs::docshell_shistory_bfcache_allow_unload_listeners()) {
bfcacheCombo &= ~BFCacheStatus::UNLOAD_LISTENER;
}
return bfcacheCombo == 0;
}
void CanonicalBrowsingContext::SetTouchEventsOverride(
dom::TouchEventsOverride aOverride, ErrorResult& aRv) {
SetTouchEventsOverrideInternal(aOverride, aRv);
}
void CanonicalBrowsingContext::SetTargetTopLevelLinkClicksToBlank(
bool aTargetTopLevelLinkClicksToBlank, ErrorResult& aRv) {
SetTargetTopLevelLinkClicksToBlankInternal(aTargetTopLevelLinkClicksToBlank,
aRv);
}
void CanonicalBrowsingContext::AddPageAwakeRequest() {
MOZ_ASSERT(IsTop());
auto count = GetPageAwakeRequestCount();
MOZ_ASSERT(count < UINT32_MAX);
Unused << SetPageAwakeRequestCount(++count);
}
void CanonicalBrowsingContext::RemovePageAwakeRequest() {
MOZ_ASSERT(IsTop());
auto count = GetPageAwakeRequestCount();
MOZ_ASSERT(count > 0);
Unused << SetPageAwakeRequestCount(--count);
}
void CanonicalBrowsingContext::CloneDocumentTreeInto(
CanonicalBrowsingContext* aSource, const nsACString& aRemoteType,
embedding::PrintData&& aPrintData) {
NavigationIsolationOptions options;
options.mRemoteType = aRemoteType;
mClonePromise =
ChangeRemoteness(options, /* aPendingSwitchId = */ 0)
->Then(
GetMainThreadSerialEventTarget(), __func__,
[source = MaybeDiscardedBrowsingContext{aSource},
data = std::move(aPrintData)](
BrowserParent* aBp) -> RefPtr<GenericNonExclusivePromise> {
RefPtr<BrowserBridgeParent> bridge =
aBp->GetBrowserBridgeParent();
return aBp->SendCloneDocumentTreeIntoSelf(source, data)
->Then(
GetMainThreadSerialEventTarget(), __func__,
[bridge](
BrowserParent::CloneDocumentTreeIntoSelfPromise::
ResolveOrRejectValue&& aValue) {
// We're cloning a remote iframe, so we created a
// BrowserBridge which makes us register an OOP load
// (see Document::OOPChildLoadStarted), even though
// this isn't a real load. We call
// SendMaybeFireEmbedderLoadEvents here so that we do
// register the end of the load (see
// Document::OOPChildLoadDone).
if (bridge) {
Unused << bridge->SendMaybeFireEmbedderLoadEvents(
EmbedderElementEventType::NoEvent);
}
if (aValue.IsResolve() && aValue.ResolveValue()) {
return GenericNonExclusivePromise::CreateAndResolve(
true, __func__);
}
return GenericNonExclusivePromise::CreateAndReject(
NS_ERROR_FAILURE, __func__);
});
},
[](nsresult aRv) -> RefPtr<GenericNonExclusivePromise> {
NS_WARNING(
nsPrintfCString("Remote clone failed: %x\n", unsigned(aRv))
.get());
return GenericNonExclusivePromise::CreateAndReject(
NS_ERROR_FAILURE, __func__);
});
mClonePromise->Then(
GetMainThreadSerialEventTarget(), __func__,
[self = RefPtr{this}]() { self->mClonePromise = nullptr; });
}
bool CanonicalBrowsingContext::StartApzAutoscroll(float aAnchorX,
float aAnchorY,
nsViewID aScrollId,
uint32_t aPresShellId) {
nsCOMPtr<nsIWidget> widget;
mozilla::layers::LayersId layersId{0};
if (IsInProcess()) {
nsCOMPtr<nsPIDOMWindowOuter> outer = GetDOMWindow();
if (!outer) {
return false;
}
widget = widget::WidgetUtils::DOMWindowToWidget(outer);
if (widget) {
layersId = widget->GetRootLayerTreeId();
}
} else {
RefPtr<BrowserParent> parent = GetBrowserParent();
if (!parent) {
return false;
}
widget = parent->GetWidget();
layersId = parent->GetLayersId();
}
if (!widget || !widget->AsyncPanZoomEnabled()) {
return false;
}
// The anchor coordinates that are passed in are relative to the origin of the
// screen, but we are sending them to APZ which only knows about coordinates
// relative to the widget, so convert them accordingly.
const LayoutDeviceIntPoint anchor =
RoundedToInt(LayoutDevicePoint(aAnchorX, aAnchorY)) -
widget->WidgetToScreenOffset();
mozilla::layers::ScrollableLayerGuid guid(layersId, aPresShellId, aScrollId);
return widget->StartAsyncAutoscroll(
ViewAs<ScreenPixel>(
anchor, PixelCastJustification::LayoutDeviceIsScreenForBounds),
guid);
}
void CanonicalBrowsingContext::StopApzAutoscroll(nsViewID aScrollId,
uint32_t aPresShellId) {
nsCOMPtr<nsIWidget> widget;
mozilla::layers::LayersId layersId{0};
if (IsInProcess()) {
nsCOMPtr<nsPIDOMWindowOuter> outer = GetDOMWindow();
if (!outer) {
return;
}
widget = widget::WidgetUtils::DOMWindowToWidget(outer);
if (widget) {
layersId = widget->GetRootLayerTreeId();
}
} else {
RefPtr<BrowserParent> parent = GetBrowserParent();
if (!parent) {
return;
}
widget = parent->GetWidget();
layersId = parent->GetLayersId();
}
if (!widget || !widget->AsyncPanZoomEnabled()) {
return;
}
mozilla::layers::ScrollableLayerGuid guid(layersId, aPresShellId, aScrollId);
widget->StopAsyncAutoscroll(guid);
}
already_AddRefed<nsISHEntry>
CanonicalBrowsingContext::GetMostRecentLoadingSessionHistoryEntry() {
if (mLoadingEntries.IsEmpty()) {
return nullptr;
}
RefPtr<SessionHistoryEntry> entry = mLoadingEntries.LastElement().mEntry;
return entry.forget();
}
NS_IMPL_CYCLE_COLLECTION_CLASS(CanonicalBrowsingContext)
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(CanonicalBrowsingContext,
BrowsingContext)
tmp->mPermanentKey.setNull();
if (tmp->mSessionHistory) {
tmp->mSessionHistory->SetBrowsingContext(nullptr);
}
NS_IMPL_CYCLE_COLLECTION_UNLINK(mSessionHistory, mContainerFeaturePolicy,
mCurrentBrowserParent, mWebProgress,
mSessionStoreSessionStorageUpdateTimer)
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(CanonicalBrowsingContext,
BrowsingContext)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mSessionHistory, mContainerFeaturePolicy,
mCurrentBrowserParent, mWebProgress,
mSessionStoreSessionStorageUpdateTimer)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN_INHERITED(CanonicalBrowsingContext,
BrowsingContext)
NS_IMPL_CYCLE_COLLECTION_TRACE_JS_MEMBER_CALLBACK(mPermanentKey)
NS_IMPL_CYCLE_COLLECTION_TRACE_END
NS_IMPL_ADDREF_INHERITED(CanonicalBrowsingContext, BrowsingContext)
NS_IMPL_RELEASE_INHERITED(CanonicalBrowsingContext, BrowsingContext)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(CanonicalBrowsingContext)
NS_INTERFACE_MAP_END_INHERITING(BrowsingContext)
} // namespace dom
} // namespace mozilla
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