forked from mirrors/gecko-dev
42b7f1a58c
This prevents copies and avoids the hack we have to avoid this, which
right now is using nsDependent{C,}String.
Non-virtual actors can still use `nsString` if they need to on the
receiving end.
Differential Revision: https://phabricator.services.mozilla.com/D152519
1647 lines
54 KiB
C++
1647 lines
54 KiB
C++
/* -*- 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 "nsFrameMessageManager.h"
|
|
|
|
#include <algorithm>
|
|
#include <cmath>
|
|
#include <cstddef>
|
|
#include <cstdint>
|
|
#include <new>
|
|
#include <utility>
|
|
#include "ContentChild.h"
|
|
#include "ErrorList.h"
|
|
#include "mozilla/ProfilerLabels.h"
|
|
#include "mozilla/Unused.h"
|
|
#include "base/process_util.h"
|
|
#include "chrome/common/ipc_channel.h"
|
|
#include "js/CallAndConstruct.h" // JS::IsCallable, JS_CallFunctionValue
|
|
#include "js/CompilationAndEvaluation.h"
|
|
#include "js/CompileOptions.h"
|
|
#include "js/experimental/JSStencil.h"
|
|
#include "js/GCVector.h"
|
|
#include "js/JSON.h"
|
|
#include "js/PropertyAndElement.h" // JS_GetProperty
|
|
#include "js/RootingAPI.h"
|
|
#include "js/SourceText.h"
|
|
#include "js/StructuredClone.h"
|
|
#include "js/TypeDecls.h"
|
|
#include "js/Wrapper.h"
|
|
#include "jsapi.h"
|
|
#include "jsfriendapi.h"
|
|
#include "mozilla/AlreadyAddRefed.h"
|
|
#include "mozilla/Assertions.h"
|
|
#include "mozilla/ClearOnShutdown.h"
|
|
#include "mozilla/ErrorResult.h"
|
|
#include "mozilla/MacroForEach.h"
|
|
#include "mozilla/NotNull.h"
|
|
#include "mozilla/OwningNonNull.h"
|
|
#include "mozilla/RefPtr.h"
|
|
#include "mozilla/ScriptPreloader.h"
|
|
#include "mozilla/Services.h"
|
|
#include "mozilla/StaticPtr.h"
|
|
#include "mozilla/Telemetry.h"
|
|
#include "mozilla/TelemetryHistogramEnums.h"
|
|
#include "mozilla/TimeStamp.h"
|
|
#include "mozilla/TypedEnumBits.h"
|
|
#include "mozilla/UniquePtr.h"
|
|
#include "mozilla/dom/AutoEntryScript.h"
|
|
#include "mozilla/dom/BindingDeclarations.h"
|
|
#include "mozilla/dom/CallbackObject.h"
|
|
#include "mozilla/dom/ChildProcessMessageManager.h"
|
|
#include "mozilla/dom/ChromeMessageBroadcaster.h"
|
|
#include "mozilla/dom/ContentProcessMessageManager.h"
|
|
#include "mozilla/dom/DOMTypes.h"
|
|
#include "mozilla/dom/MessageBroadcaster.h"
|
|
#include "mozilla/dom/MessageListenerManager.h"
|
|
#include "mozilla/dom/MessageManagerBinding.h"
|
|
#include "mozilla/dom/MessagePort.h"
|
|
#include "mozilla/dom/ParentProcessMessageManager.h"
|
|
#include "mozilla/dom/ProcessMessageManager.h"
|
|
#include "mozilla/dom/RootedDictionary.h"
|
|
#include "mozilla/dom/SameProcessMessageQueue.h"
|
|
#include "mozilla/dom/ScriptLoader.h"
|
|
#include "mozilla/dom/ScriptSettings.h"
|
|
#include "mozilla/dom/ToJSValue.h"
|
|
#include "mozilla/dom/MessageManagerCallback.h"
|
|
#include "mozilla/dom/ipc/SharedMap.h"
|
|
#include "mozilla/dom/ipc/StructuredCloneData.h"
|
|
#include "mozilla/scache/StartupCacheUtils.h"
|
|
#include "nsASCIIMask.h"
|
|
#include "nsBaseHashtable.h"
|
|
#include "nsCOMPtr.h"
|
|
#include "nsClassHashtable.h"
|
|
#include "nsComponentManagerUtils.h"
|
|
#include "nsContentUtils.h"
|
|
#include "nsCycleCollectionNoteChild.h"
|
|
#include "nsCycleCollectionParticipant.h"
|
|
#include "nsTHashMap.h"
|
|
#include "nsDebug.h"
|
|
#include "nsError.h"
|
|
#include "nsHashKeys.h"
|
|
#include "nsIChannel.h"
|
|
#include "nsIConsoleService.h"
|
|
#include "nsIContentPolicy.h"
|
|
#include "nsIInputStream.h"
|
|
#include "nsILoadInfo.h"
|
|
#include "nsIMemoryReporter.h"
|
|
#include "nsIMessageManager.h"
|
|
#include "nsIObserver.h"
|
|
#include "nsIObserverService.h"
|
|
#include "nsIProtocolHandler.h"
|
|
#include "nsIScriptError.h"
|
|
#include "nsISupports.h"
|
|
#include "nsISupportsUtils.h"
|
|
#include "nsIURI.h"
|
|
#include "nsIWeakReferenceUtils.h"
|
|
#include "nsIXPConnect.h"
|
|
#include "nsJSUtils.h"
|
|
#include "nsLiteralString.h"
|
|
#include "nsNetUtil.h"
|
|
#include "nsPrintfCString.h"
|
|
#include "nsQueryObject.h"
|
|
#include "nsServiceManagerUtils.h"
|
|
#include "nsString.h"
|
|
#include "nsStringFlags.h"
|
|
#include "nsStringFwd.h"
|
|
#include "nsTArray.h"
|
|
#include "nsTLiteralString.h"
|
|
#include "nsTObserverArray.h"
|
|
#include "nsTPromiseFlatString.h"
|
|
#include "nsTStringRepr.h"
|
|
#include "nsThreadUtils.h"
|
|
#include "nsXULAppAPI.h"
|
|
#include "nscore.h"
|
|
#include "xpcpublic.h"
|
|
|
|
#ifdef XP_WIN
|
|
# if defined(SendMessage)
|
|
# undef SendMessage
|
|
# endif
|
|
#endif
|
|
|
|
#ifdef FUZZING
|
|
# include "MessageManagerFuzzer.h"
|
|
#endif
|
|
|
|
using namespace mozilla;
|
|
using namespace mozilla::dom;
|
|
using namespace mozilla::dom::ipc;
|
|
|
|
#define CACHE_PREFIX(type) "mm/" type
|
|
|
|
nsFrameMessageManager::nsFrameMessageManager(MessageManagerCallback* aCallback,
|
|
MessageManagerFlags aFlags)
|
|
: mChrome(aFlags & MessageManagerFlags::MM_CHROME),
|
|
mGlobal(aFlags & MessageManagerFlags::MM_GLOBAL),
|
|
mIsProcessManager(aFlags & MessageManagerFlags::MM_PROCESSMANAGER),
|
|
mIsBroadcaster(aFlags & MessageManagerFlags::MM_BROADCASTER),
|
|
mOwnsCallback(aFlags & MessageManagerFlags::MM_OWNSCALLBACK),
|
|
mHandlingMessage(false),
|
|
mClosed(false),
|
|
mDisconnected(false),
|
|
mCallback(aCallback) {
|
|
NS_ASSERTION(!mIsBroadcaster || !mCallback,
|
|
"Broadcasters cannot have callbacks!");
|
|
if (mOwnsCallback) {
|
|
mOwnedCallback = WrapUnique(aCallback);
|
|
}
|
|
}
|
|
|
|
nsFrameMessageManager::~nsFrameMessageManager() {
|
|
for (int32_t i = mChildManagers.Length(); i > 0; --i) {
|
|
mChildManagers[i - 1]->Disconnect(false);
|
|
}
|
|
if (mIsProcessManager) {
|
|
if (this == sParentProcessManager) {
|
|
sParentProcessManager = nullptr;
|
|
}
|
|
if (this == sChildProcessManager) {
|
|
sChildProcessManager = nullptr;
|
|
delete mozilla::dom::SameProcessMessageQueue::Get();
|
|
}
|
|
if (this == sSameProcessParentManager) {
|
|
sSameProcessParentManager = nullptr;
|
|
}
|
|
}
|
|
}
|
|
|
|
inline void ImplCycleCollectionTraverse(
|
|
nsCycleCollectionTraversalCallback& aCallback,
|
|
nsMessageListenerInfo& aField, const char* aName, uint32_t aFlags = 0) {
|
|
ImplCycleCollectionTraverse(aCallback, aField.mStrongListener, aName, aFlags);
|
|
ImplCycleCollectionTraverse(aCallback, aField.mWeakListener, aName, aFlags);
|
|
}
|
|
|
|
NS_IMPL_CYCLE_COLLECTION_CLASS(nsFrameMessageManager)
|
|
|
|
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsFrameMessageManager)
|
|
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mListeners)
|
|
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mChildManagers)
|
|
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mSharedData)
|
|
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
|
|
|
|
NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(nsFrameMessageManager)
|
|
NS_IMPL_CYCLE_COLLECTION_TRACE_JS_MEMBER_CALLBACK(mInitialProcessData)
|
|
NS_IMPL_CYCLE_COLLECTION_TRACE_END
|
|
|
|
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(nsFrameMessageManager)
|
|
NS_IMPL_CYCLE_COLLECTION_UNLINK(mListeners)
|
|
for (int32_t i = tmp->mChildManagers.Length(); i > 0; --i) {
|
|
tmp->mChildManagers[i - 1]->Disconnect(false);
|
|
}
|
|
NS_IMPL_CYCLE_COLLECTION_UNLINK(mChildManagers)
|
|
NS_IMPL_CYCLE_COLLECTION_UNLINK(mSharedData)
|
|
tmp->mInitialProcessData.setNull();
|
|
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
|
|
|
|
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsFrameMessageManager)
|
|
NS_INTERFACE_MAP_ENTRY(nsISupports)
|
|
|
|
/* Message managers in child process implement nsIMessageSender.
|
|
Message managers in the chrome process are
|
|
either broadcasters (if they have subordinate/child message
|
|
managers) or they're simple message senders. */
|
|
NS_INTERFACE_MAP_ENTRY_CONDITIONAL(nsIMessageSender,
|
|
!mChrome || !mIsBroadcaster)
|
|
|
|
NS_INTERFACE_MAP_END
|
|
|
|
NS_IMPL_CYCLE_COLLECTING_ADDREF(nsFrameMessageManager)
|
|
NS_IMPL_CYCLE_COLLECTING_RELEASE(nsFrameMessageManager)
|
|
|
|
void MessageManagerCallback::DoGetRemoteType(nsACString& aRemoteType,
|
|
ErrorResult& aError) const {
|
|
aRemoteType.Truncate();
|
|
mozilla::dom::ProcessMessageManager* parent = GetProcessMessageManager();
|
|
if (!parent) {
|
|
return;
|
|
}
|
|
|
|
parent->GetRemoteType(aRemoteType, aError);
|
|
}
|
|
|
|
bool MessageManagerCallback::BuildClonedMessageData(
|
|
StructuredCloneData& aData, ClonedMessageData& aClonedData) {
|
|
return aData.BuildClonedMessageData(aClonedData);
|
|
}
|
|
|
|
void mozilla::dom::ipc::UnpackClonedMessageData(
|
|
const ClonedMessageData& aClonedData, StructuredCloneData& aData) {
|
|
aData.BorrowFromClonedMessageData(aClonedData);
|
|
}
|
|
|
|
void nsFrameMessageManager::AddMessageListener(const nsAString& aMessageName,
|
|
MessageListener& aListener,
|
|
bool aListenWhenClosed,
|
|
ErrorResult& aError) {
|
|
auto* const listeners = mListeners.GetOrInsertNew(aMessageName);
|
|
uint32_t len = listeners->Length();
|
|
for (uint32_t i = 0; i < len; ++i) {
|
|
MessageListener* strongListener = listeners->ElementAt(i).mStrongListener;
|
|
if (strongListener && *strongListener == aListener) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
nsMessageListenerInfo* entry = listeners->AppendElement();
|
|
entry->mStrongListener = &aListener;
|
|
entry->mListenWhenClosed = aListenWhenClosed;
|
|
}
|
|
|
|
void nsFrameMessageManager::RemoveMessageListener(const nsAString& aMessageName,
|
|
MessageListener& aListener,
|
|
ErrorResult& aError) {
|
|
nsAutoTObserverArray<nsMessageListenerInfo, 1>* listeners =
|
|
mListeners.Get(aMessageName);
|
|
if (listeners) {
|
|
uint32_t len = listeners->Length();
|
|
for (uint32_t i = 0; i < len; ++i) {
|
|
MessageListener* strongListener = listeners->ElementAt(i).mStrongListener;
|
|
if (strongListener && *strongListener == aListener) {
|
|
listeners->RemoveElementAt(i);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static already_AddRefed<nsISupports> ToXPCOMMessageListener(
|
|
MessageListener& aListener) {
|
|
return CallbackObjectHolder<mozilla::dom::MessageListener, nsISupports>(
|
|
&aListener)
|
|
.ToXPCOMCallback();
|
|
}
|
|
|
|
void nsFrameMessageManager::AddWeakMessageListener(
|
|
const nsAString& aMessageName, MessageListener& aListener,
|
|
ErrorResult& aError) {
|
|
nsCOMPtr<nsISupports> listener(ToXPCOMMessageListener(aListener));
|
|
nsWeakPtr weak = do_GetWeakReference(listener);
|
|
if (!weak) {
|
|
aError.Throw(NS_ERROR_NO_INTERFACE);
|
|
return;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
// It's technically possible that one object X could give two different
|
|
// nsIWeakReference*'s when you do_GetWeakReference(X). We really don't want
|
|
// this to happen; it will break e.g. RemoveWeakMessageListener. So let's
|
|
// check that we're not getting ourselves into that situation.
|
|
nsCOMPtr<nsISupports> canonical = do_QueryInterface(listener);
|
|
for (const auto& entry : mListeners) {
|
|
nsAutoTObserverArray<nsMessageListenerInfo, 1>* listeners = entry.GetWeak();
|
|
uint32_t count = listeners->Length();
|
|
for (uint32_t i = 0; i < count; i++) {
|
|
nsWeakPtr weakListener = listeners->ElementAt(i).mWeakListener;
|
|
if (weakListener) {
|
|
nsCOMPtr<nsISupports> otherCanonical = do_QueryReferent(weakListener);
|
|
MOZ_ASSERT((canonical == otherCanonical) == (weak == weakListener));
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
auto* const listeners = mListeners.GetOrInsertNew(aMessageName);
|
|
uint32_t len = listeners->Length();
|
|
for (uint32_t i = 0; i < len; ++i) {
|
|
if (listeners->ElementAt(i).mWeakListener == weak) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
nsMessageListenerInfo* entry = listeners->AppendElement();
|
|
entry->mWeakListener = weak;
|
|
entry->mListenWhenClosed = false;
|
|
}
|
|
|
|
void nsFrameMessageManager::RemoveWeakMessageListener(
|
|
const nsAString& aMessageName, MessageListener& aListener,
|
|
ErrorResult& aError) {
|
|
nsCOMPtr<nsISupports> listener(ToXPCOMMessageListener(aListener));
|
|
nsWeakPtr weak = do_GetWeakReference(listener);
|
|
if (!weak) {
|
|
aError.Throw(NS_ERROR_NO_INTERFACE);
|
|
return;
|
|
}
|
|
|
|
nsAutoTObserverArray<nsMessageListenerInfo, 1>* listeners =
|
|
mListeners.Get(aMessageName);
|
|
if (!listeners) {
|
|
return;
|
|
}
|
|
|
|
uint32_t len = listeners->Length();
|
|
for (uint32_t i = 0; i < len; ++i) {
|
|
if (listeners->ElementAt(i).mWeakListener == weak) {
|
|
listeners->RemoveElementAt(i);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
void nsFrameMessageManager::LoadScript(const nsAString& aURL,
|
|
bool aAllowDelayedLoad,
|
|
bool aRunInGlobalScope,
|
|
ErrorResult& aError) {
|
|
if (aAllowDelayedLoad) {
|
|
// Cache for future windows or frames
|
|
mPendingScripts.AppendElement(aURL);
|
|
mPendingScriptsGlobalStates.AppendElement(aRunInGlobalScope);
|
|
}
|
|
|
|
if (mCallback) {
|
|
#ifdef DEBUG_smaug
|
|
printf("Will load %s \n", NS_ConvertUTF16toUTF8(aURL).get());
|
|
#endif
|
|
if (!mCallback->DoLoadMessageManagerScript(aURL, aRunInGlobalScope)) {
|
|
aError.Throw(NS_ERROR_FAILURE);
|
|
return;
|
|
}
|
|
}
|
|
|
|
for (uint32_t i = 0; i < mChildManagers.Length(); ++i) {
|
|
RefPtr<nsFrameMessageManager> mm = mChildManagers[i];
|
|
if (mm) {
|
|
// Use false here, so that child managers don't cache the script, which
|
|
// is already cached in the parent.
|
|
mm->LoadScript(aURL, false, aRunInGlobalScope, IgnoreErrors());
|
|
}
|
|
}
|
|
}
|
|
|
|
void nsFrameMessageManager::RemoveDelayedScript(const nsAString& aURL) {
|
|
for (uint32_t i = 0; i < mPendingScripts.Length(); ++i) {
|
|
if (mPendingScripts[i] == aURL) {
|
|
mPendingScripts.RemoveElementAt(i);
|
|
mPendingScriptsGlobalStates.RemoveElementAt(i);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
void nsFrameMessageManager::GetDelayedScripts(
|
|
JSContext* aCx, nsTArray<nsTArray<JS::Value>>& aList, ErrorResult& aError) {
|
|
// Frame message managers may return an incomplete list because scripts
|
|
// that were loaded after it was connected are not added to the list.
|
|
if (!IsGlobal() && !IsBroadcaster()) {
|
|
NS_WARNING(
|
|
"Cannot retrieve list of pending frame scripts for frame"
|
|
"message managers as it may be incomplete");
|
|
aError.Throw(NS_ERROR_NOT_IMPLEMENTED);
|
|
return;
|
|
}
|
|
|
|
aError.MightThrowJSException();
|
|
|
|
aList.SetCapacity(mPendingScripts.Length());
|
|
for (uint32_t i = 0; i < mPendingScripts.Length(); ++i) {
|
|
JS::Rooted<JS::Value> url(aCx);
|
|
if (!ToJSValue(aCx, mPendingScripts[i], &url)) {
|
|
aError.NoteJSContextException(aCx);
|
|
return;
|
|
}
|
|
|
|
nsTArray<JS::Value>* array = aList.AppendElement(2);
|
|
array->AppendElement(url);
|
|
array->AppendElement(JS::BooleanValue(mPendingScriptsGlobalStates[i]));
|
|
}
|
|
}
|
|
|
|
/* static */
|
|
bool nsFrameMessageManager::GetParamsForMessage(JSContext* aCx,
|
|
const JS::Value& aValue,
|
|
const JS::Value& aTransfer,
|
|
StructuredCloneData& aData) {
|
|
// First try to use structured clone on the whole thing.
|
|
JS::Rooted<JS::Value> v(aCx, aValue);
|
|
JS::Rooted<JS::Value> t(aCx, aTransfer);
|
|
ErrorResult rv;
|
|
aData.Write(aCx, v, t, JS::CloneDataPolicy(), rv);
|
|
if (!rv.Failed()) {
|
|
return true;
|
|
}
|
|
|
|
rv.SuppressException();
|
|
JS_ClearPendingException(aCx);
|
|
|
|
nsCOMPtr<nsIConsoleService> console(
|
|
do_GetService(NS_CONSOLESERVICE_CONTRACTID));
|
|
if (console) {
|
|
nsAutoString filename;
|
|
uint32_t lineno = 0, column = 0;
|
|
nsJSUtils::GetCallingLocation(aCx, filename, &lineno, &column);
|
|
nsCOMPtr<nsIScriptError> error(
|
|
do_CreateInstance(NS_SCRIPTERROR_CONTRACTID));
|
|
error->Init(
|
|
u"Sending message that cannot be cloned. Are "
|
|
"you trying to send an XPCOM object?"_ns,
|
|
filename, u""_ns, lineno, column, nsIScriptError::warningFlag,
|
|
"chrome javascript"_ns, false /* from private window */,
|
|
true /* from chrome context */);
|
|
console->LogMessage(error);
|
|
}
|
|
|
|
// Not clonable, try JSON
|
|
// Bug 1749037 - This is ugly but currently structured cloning doesn't handle
|
|
// properly cases when interface is implemented in JS and used
|
|
// as a dictionary.
|
|
nsAutoString json;
|
|
NS_ENSURE_TRUE(nsContentUtils::StringifyJSON(aCx, &v, json), false);
|
|
NS_ENSURE_TRUE(!json.IsEmpty(), false);
|
|
|
|
JS::Rooted<JS::Value> val(aCx, JS::NullValue());
|
|
NS_ENSURE_TRUE(JS_ParseJSON(aCx, static_cast<const char16_t*>(json.get()),
|
|
json.Length(), &val),
|
|
false);
|
|
|
|
aData.Write(aCx, val, rv);
|
|
if (NS_WARN_IF(rv.Failed())) {
|
|
rv.SuppressException();
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool sSendingSyncMessage = false;
|
|
|
|
static bool AllowMessage(size_t aDataLength, const nsAString& aMessageName) {
|
|
// A message includes more than structured clone data, so subtract
|
|
// 20KB to make it more likely that a message within this bound won't
|
|
// result in an overly large IPC message.
|
|
static const size_t kMaxMessageSize =
|
|
IPC::Channel::kMaximumMessageSize - 20 * 1024;
|
|
return aDataLength < kMaxMessageSize;
|
|
}
|
|
|
|
void nsFrameMessageManager::SendSyncMessage(JSContext* aCx,
|
|
const nsAString& aMessageName,
|
|
JS::Handle<JS::Value> aObj,
|
|
nsTArray<JS::Value>& aResult,
|
|
ErrorResult& aError) {
|
|
NS_ASSERTION(!IsGlobal(), "Should not call SendSyncMessage in chrome");
|
|
NS_ASSERTION(!IsBroadcaster(), "Should not call SendSyncMessage in chrome");
|
|
NS_ASSERTION(!GetParentManager(),
|
|
"Should not have parent manager in content!");
|
|
|
|
AUTO_PROFILER_LABEL_DYNAMIC_LOSSY_NSSTRING(
|
|
"nsFrameMessageManager::SendMessage", OTHER, aMessageName);
|
|
|
|
if (sSendingSyncMessage) {
|
|
// No kind of blocking send should be issued on top of a sync message.
|
|
aError.Throw(NS_ERROR_UNEXPECTED);
|
|
return;
|
|
}
|
|
|
|
StructuredCloneData data;
|
|
if (!aObj.isUndefined() &&
|
|
!GetParamsForMessage(aCx, aObj, JS::UndefinedHandleValue, data)) {
|
|
aError.Throw(NS_ERROR_DOM_DATA_CLONE_ERR);
|
|
return;
|
|
}
|
|
|
|
#ifdef FUZZING
|
|
if (data.DataLength() > 0) {
|
|
MessageManagerFuzzer::TryMutate(aCx, aMessageName, &data,
|
|
JS::UndefinedHandleValue);
|
|
}
|
|
#endif
|
|
|
|
if (!AllowMessage(data.DataLength(), aMessageName)) {
|
|
aError.Throw(NS_ERROR_FAILURE);
|
|
return;
|
|
}
|
|
|
|
if (!mCallback) {
|
|
aError.Throw(NS_ERROR_NOT_INITIALIZED);
|
|
return;
|
|
}
|
|
|
|
nsTArray<StructuredCloneData> retval;
|
|
|
|
TimeStamp start = TimeStamp::Now();
|
|
sSendingSyncMessage = true;
|
|
bool ok = mCallback->DoSendBlockingMessage(aMessageName, data, &retval);
|
|
sSendingSyncMessage = false;
|
|
|
|
uint32_t latencyMs = round((TimeStamp::Now() - start).ToMilliseconds());
|
|
if (latencyMs >= kMinTelemetrySyncMessageManagerLatencyMs) {
|
|
NS_ConvertUTF16toUTF8 messageName(aMessageName);
|
|
// NOTE: We need to strip digit characters from the message name in order to
|
|
// avoid a large number of buckets due to generated names from addons (such
|
|
// as "ublock:sb:{N}"). See bug 1348113 comment 10.
|
|
messageName.StripTaggedASCII(ASCIIMask::Mask0to9());
|
|
Telemetry::Accumulate(Telemetry::IPC_SYNC_MESSAGE_MANAGER_LATENCY_MS,
|
|
messageName, latencyMs);
|
|
}
|
|
|
|
if (!ok) {
|
|
return;
|
|
}
|
|
|
|
uint32_t len = retval.Length();
|
|
aResult.SetCapacity(len);
|
|
for (uint32_t i = 0; i < len; ++i) {
|
|
JS::Rooted<JS::Value> ret(aCx);
|
|
retval[i].Read(aCx, &ret, aError);
|
|
if (aError.Failed()) {
|
|
MOZ_ASSERT(false, "Unable to read structured clone in SendMessage");
|
|
return;
|
|
}
|
|
aResult.AppendElement(ret);
|
|
}
|
|
}
|
|
|
|
nsresult nsFrameMessageManager::DispatchAsyncMessageInternal(
|
|
JSContext* aCx, const nsAString& aMessage, StructuredCloneData& aData) {
|
|
if (mIsBroadcaster) {
|
|
uint32_t len = mChildManagers.Length();
|
|
for (uint32_t i = 0; i < len; ++i) {
|
|
mChildManagers[i]->DispatchAsyncMessageInternal(aCx, aMessage, aData);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
if (!mCallback) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
|
|
nsresult rv = mCallback->DoSendAsyncMessage(aMessage, aData);
|
|
if (NS_FAILED(rv)) {
|
|
return rv;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
void nsFrameMessageManager::DispatchAsyncMessage(
|
|
JSContext* aCx, const nsAString& aMessageName, JS::Handle<JS::Value> aObj,
|
|
JS::Handle<JS::Value> aTransfers, ErrorResult& aError) {
|
|
StructuredCloneData data;
|
|
if (!aObj.isUndefined() &&
|
|
!GetParamsForMessage(aCx, aObj, aTransfers, data)) {
|
|
aError.Throw(NS_ERROR_DOM_DATA_CLONE_ERR);
|
|
return;
|
|
}
|
|
|
|
#ifdef FUZZING
|
|
if (data.DataLength()) {
|
|
MessageManagerFuzzer::TryMutate(aCx, aMessageName, &data, aTransfers);
|
|
}
|
|
#endif
|
|
|
|
if (!AllowMessage(data.DataLength(), aMessageName)) {
|
|
aError.Throw(NS_ERROR_FAILURE);
|
|
return;
|
|
}
|
|
|
|
aError = DispatchAsyncMessageInternal(aCx, aMessageName, data);
|
|
}
|
|
|
|
class MMListenerRemover {
|
|
public:
|
|
explicit MMListenerRemover(nsFrameMessageManager* aMM)
|
|
: mWasHandlingMessage(aMM->mHandlingMessage), mMM(aMM) {
|
|
mMM->mHandlingMessage = true;
|
|
}
|
|
~MMListenerRemover() {
|
|
if (!mWasHandlingMessage) {
|
|
mMM->mHandlingMessage = false;
|
|
if (mMM->mDisconnected) {
|
|
mMM->mListeners.Clear();
|
|
}
|
|
}
|
|
}
|
|
|
|
bool mWasHandlingMessage;
|
|
RefPtr<nsFrameMessageManager> mMM;
|
|
};
|
|
|
|
void nsFrameMessageManager::ReceiveMessage(
|
|
nsISupports* aTarget, nsFrameLoader* aTargetFrameLoader, bool aTargetClosed,
|
|
const nsAString& aMessage, bool aIsSync, StructuredCloneData* aCloneData,
|
|
nsTArray<StructuredCloneData>* aRetVal, ErrorResult& aError) {
|
|
MOZ_ASSERT(aTarget);
|
|
|
|
nsAutoTObserverArray<nsMessageListenerInfo, 1>* listeners =
|
|
mListeners.Get(aMessage);
|
|
if (listeners) {
|
|
MMListenerRemover lr(this);
|
|
|
|
nsAutoTObserverArray<nsMessageListenerInfo, 1>::EndLimitedIterator iter(
|
|
*listeners);
|
|
while (iter.HasMore()) {
|
|
nsMessageListenerInfo& listener = iter.GetNext();
|
|
// Remove mListeners[i] if it's an expired weak listener.
|
|
nsCOMPtr<nsISupports> weakListener;
|
|
if (listener.mWeakListener) {
|
|
weakListener = do_QueryReferent(listener.mWeakListener);
|
|
if (!weakListener) {
|
|
iter.Remove();
|
|
continue;
|
|
}
|
|
}
|
|
|
|
if (!listener.mListenWhenClosed && aTargetClosed) {
|
|
continue;
|
|
}
|
|
|
|
JS::RootingContext* rcx = RootingCx();
|
|
JS::Rooted<JSObject*> object(rcx);
|
|
JS::Rooted<JSObject*> objectGlobal(rcx);
|
|
|
|
RefPtr<MessageListener> webIDLListener;
|
|
if (!weakListener) {
|
|
webIDLListener = listener.mStrongListener;
|
|
object = webIDLListener->CallbackOrNull();
|
|
objectGlobal = webIDLListener->CallbackGlobalOrNull();
|
|
} else {
|
|
nsCOMPtr<nsIXPConnectWrappedJS> wrappedJS =
|
|
do_QueryInterface(weakListener);
|
|
if (!wrappedJS) {
|
|
continue;
|
|
}
|
|
|
|
object = wrappedJS->GetJSObject();
|
|
objectGlobal = wrappedJS->GetJSObjectGlobal();
|
|
}
|
|
|
|
if (!object) {
|
|
continue;
|
|
}
|
|
|
|
AutoEntryScript aes(js::UncheckedUnwrap(object),
|
|
"message manager handler");
|
|
JSContext* cx = aes.cx();
|
|
|
|
// We passed the unwrapped object to AutoEntryScript so we now need to
|
|
// enter the realm of the global object that represents the realm of our
|
|
// callback.
|
|
JSAutoRealm ar(cx, objectGlobal);
|
|
|
|
RootedDictionary<ReceiveMessageArgument> argument(cx);
|
|
|
|
JS::Rooted<JS::Value> json(cx, JS::NullValue());
|
|
if (aCloneData && aCloneData->DataLength()) {
|
|
aCloneData->Read(cx, &json, aError);
|
|
if (NS_WARN_IF(aError.Failed())) {
|
|
aError.SuppressException();
|
|
JS_ClearPendingException(cx);
|
|
return;
|
|
}
|
|
}
|
|
argument.mData = json;
|
|
argument.mJson = json;
|
|
|
|
// Get cloned MessagePort from StructuredCloneData.
|
|
if (aCloneData) {
|
|
Sequence<OwningNonNull<MessagePort>> ports;
|
|
if (!aCloneData->TakeTransferredPortsAsSequence(ports)) {
|
|
aError.Throw(NS_ERROR_FAILURE);
|
|
return;
|
|
}
|
|
argument.mPorts.Construct(std::move(ports));
|
|
}
|
|
|
|
argument.mName = aMessage;
|
|
argument.mSync = aIsSync;
|
|
argument.mTarget = aTarget;
|
|
if (aTargetFrameLoader) {
|
|
argument.mTargetFrameLoader.Construct(*aTargetFrameLoader);
|
|
}
|
|
|
|
JS::Rooted<JS::Value> thisValue(cx, JS::UndefinedValue());
|
|
|
|
if (JS::IsCallable(object)) {
|
|
// A small hack to get 'this' value right on content side where
|
|
// messageManager is wrapped in BrowserChildMessageManager's global.
|
|
nsCOMPtr<nsISupports> defaultThisValue;
|
|
if (mChrome) {
|
|
defaultThisValue = do_QueryObject(this);
|
|
} else {
|
|
defaultThisValue = aTarget;
|
|
}
|
|
js::AssertSameCompartment(cx, object);
|
|
aError = nsContentUtils::WrapNative(cx, defaultThisValue, &thisValue);
|
|
if (aError.Failed()) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
JS::Rooted<JS::Value> rval(cx, JS::UndefinedValue());
|
|
if (webIDLListener) {
|
|
webIDLListener->ReceiveMessage(thisValue, argument, &rval, aError);
|
|
if (aError.Failed()) {
|
|
// At this point the call to ReceiveMessage will have reported any
|
|
// exceptions (we kept the default of eReportExceptions). We suppress
|
|
// the failure in the ErrorResult and continue.
|
|
aError.SuppressException();
|
|
continue;
|
|
}
|
|
} else {
|
|
JS::Rooted<JS::Value> funval(cx);
|
|
if (JS::IsCallable(object)) {
|
|
// If the listener is a JS function:
|
|
funval.setObject(*object);
|
|
} else {
|
|
// If the listener is a JS object which has receiveMessage function:
|
|
if (!JS_GetProperty(cx, object, "receiveMessage", &funval) ||
|
|
!funval.isObject()) {
|
|
aError.Throw(NS_ERROR_UNEXPECTED);
|
|
return;
|
|
}
|
|
|
|
// Check if the object is even callable.
|
|
if (!JS::IsCallable(&funval.toObject())) {
|
|
aError.Throw(NS_ERROR_UNEXPECTED);
|
|
return;
|
|
}
|
|
thisValue.setObject(*object);
|
|
}
|
|
|
|
JS::Rooted<JS::Value> argv(cx);
|
|
if (!ToJSValue(cx, argument, &argv)) {
|
|
aError.Throw(NS_ERROR_UNEXPECTED);
|
|
return;
|
|
}
|
|
|
|
{
|
|
JS::Rooted<JSObject*> thisObject(cx, thisValue.toObjectOrNull());
|
|
js::AssertSameCompartment(cx, thisObject);
|
|
if (!JS_CallFunctionValue(cx, thisObject, funval,
|
|
JS::HandleValueArray(argv), &rval)) {
|
|
// Because the AutoEntryScript is inside the loop this continue will
|
|
// make us report any exceptions (after which we'll move on to the
|
|
// next listener).
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (aRetVal) {
|
|
StructuredCloneData* data = aRetVal->AppendElement();
|
|
data->InitScope(JS::StructuredCloneScope::DifferentProcess);
|
|
data->Write(cx, rval, aError);
|
|
if (NS_WARN_IF(aError.Failed())) {
|
|
aRetVal->RemoveLastElement();
|
|
nsString msg =
|
|
aMessage + nsLiteralString(
|
|
u": message reply cannot be cloned. Are "
|
|
"you trying to send an XPCOM object?");
|
|
|
|
nsCOMPtr<nsIConsoleService> console(
|
|
do_GetService(NS_CONSOLESERVICE_CONTRACTID));
|
|
if (console) {
|
|
nsCOMPtr<nsIScriptError> error(
|
|
do_CreateInstance(NS_SCRIPTERROR_CONTRACTID));
|
|
error->Init(msg, u""_ns, u""_ns, 0, 0, nsIScriptError::warningFlag,
|
|
"chrome javascript"_ns, false /* from private window */,
|
|
true /* from chrome context */);
|
|
console->LogMessage(error);
|
|
}
|
|
|
|
JS_ClearPendingException(cx);
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
RefPtr<nsFrameMessageManager> kungFuDeathGrip = GetParentManager();
|
|
if (kungFuDeathGrip) {
|
|
kungFuDeathGrip->ReceiveMessage(aTarget, aTargetFrameLoader, aTargetClosed,
|
|
aMessage, aIsSync, aCloneData, aRetVal,
|
|
aError);
|
|
}
|
|
}
|
|
|
|
void nsFrameMessageManager::LoadPendingScripts(
|
|
nsFrameMessageManager* aManager, nsFrameMessageManager* aChildMM) {
|
|
// We have parent manager if we're a message broadcaster.
|
|
// In that case we want to load the pending scripts from all parent
|
|
// message managers in the hierarchy. Process the parent first so
|
|
// that pending scripts higher up in the hierarchy are loaded before others.
|
|
nsFrameMessageManager* parentManager = aManager->GetParentManager();
|
|
if (parentManager) {
|
|
LoadPendingScripts(parentManager, aChildMM);
|
|
}
|
|
|
|
for (uint32_t i = 0; i < aManager->mPendingScripts.Length(); ++i) {
|
|
aChildMM->LoadScript(aManager->mPendingScripts[i], false,
|
|
aManager->mPendingScriptsGlobalStates[i],
|
|
IgnoreErrors());
|
|
}
|
|
}
|
|
|
|
void nsFrameMessageManager::LoadPendingScripts() {
|
|
RefPtr<nsFrameMessageManager> kungfuDeathGrip = this;
|
|
LoadPendingScripts(this, this);
|
|
}
|
|
|
|
void nsFrameMessageManager::SetCallback(MessageManagerCallback* aCallback) {
|
|
MOZ_ASSERT(!mIsBroadcaster || !mCallback,
|
|
"Broadcasters cannot have callbacks!");
|
|
if (aCallback && mCallback != aCallback) {
|
|
mCallback = aCallback;
|
|
if (mOwnsCallback) {
|
|
mOwnedCallback = WrapUnique(aCallback);
|
|
}
|
|
}
|
|
}
|
|
|
|
void nsFrameMessageManager::Close() {
|
|
if (!mClosed) {
|
|
if (nsCOMPtr<nsIObserverService> obs =
|
|
mozilla::services::GetObserverService()) {
|
|
obs->NotifyWhenScriptSafe(this, "message-manager-close", nullptr);
|
|
}
|
|
}
|
|
mClosed = true;
|
|
mCallback = nullptr;
|
|
mOwnedCallback = nullptr;
|
|
}
|
|
|
|
void nsFrameMessageManager::Disconnect(bool aRemoveFromParent) {
|
|
// Notify message-manager-close if we haven't already.
|
|
Close();
|
|
|
|
if (!mDisconnected) {
|
|
if (nsCOMPtr<nsIObserverService> obs =
|
|
mozilla::services::GetObserverService()) {
|
|
obs->NotifyWhenScriptSafe(this, "message-manager-disconnect", nullptr);
|
|
}
|
|
}
|
|
|
|
ClearParentManager(aRemoveFromParent);
|
|
|
|
mDisconnected = true;
|
|
if (!mHandlingMessage) {
|
|
mListeners.Clear();
|
|
}
|
|
}
|
|
|
|
void nsFrameMessageManager::SetInitialProcessData(
|
|
JS::Handle<JS::Value> aInitialData) {
|
|
MOZ_ASSERT(!mChrome);
|
|
MOZ_ASSERT(mIsProcessManager);
|
|
MOZ_ASSERT(aInitialData.isObject());
|
|
mInitialProcessData = aInitialData;
|
|
}
|
|
|
|
void nsFrameMessageManager::GetInitialProcessData(
|
|
JSContext* aCx, JS::MutableHandle<JS::Value> aInitialProcessData,
|
|
ErrorResult& aError) {
|
|
MOZ_ASSERT(mIsProcessManager);
|
|
MOZ_ASSERT_IF(mChrome, IsBroadcaster());
|
|
|
|
JS::Rooted<JS::Value> init(aCx, mInitialProcessData);
|
|
if (mChrome && init.isUndefined()) {
|
|
// We create the initial object in the junk scope. If we created it in a
|
|
// normal realm, that realm would leak until shutdown.
|
|
JS::Rooted<JSObject*> global(aCx, xpc::PrivilegedJunkScope());
|
|
JSAutoRealm ar(aCx, global);
|
|
|
|
JS::Rooted<JSObject*> obj(aCx, JS_NewPlainObject(aCx));
|
|
if (!obj) {
|
|
aError.NoteJSContextException(aCx);
|
|
return;
|
|
}
|
|
|
|
mInitialProcessData.setObject(*obj);
|
|
init.setObject(*obj);
|
|
}
|
|
|
|
if (!mChrome && XRE_IsParentProcess()) {
|
|
// This is the cpmm in the parent process. We should use the same object as
|
|
// the ppmm. Create it first through do_GetService and use the cached
|
|
// pointer in sParentProcessManager.
|
|
nsCOMPtr<nsISupports> ppmm =
|
|
do_GetService("@mozilla.org/parentprocessmessagemanager;1");
|
|
sParentProcessManager->GetInitialProcessData(aCx, &init, aError);
|
|
if (aError.Failed()) {
|
|
return;
|
|
}
|
|
mInitialProcessData = init;
|
|
}
|
|
|
|
if (!JS_WrapValue(aCx, &init)) {
|
|
aError.NoteJSContextException(aCx);
|
|
return;
|
|
}
|
|
aInitialProcessData.set(init);
|
|
}
|
|
|
|
WritableSharedMap* nsFrameMessageManager::SharedData() {
|
|
if (!mChrome || !mIsProcessManager) {
|
|
MOZ_ASSERT(false, "Should only call this binding method on ppmm");
|
|
return nullptr;
|
|
}
|
|
if (!mSharedData) {
|
|
mSharedData = new WritableSharedMap();
|
|
}
|
|
return mSharedData;
|
|
}
|
|
|
|
already_AddRefed<ProcessMessageManager>
|
|
nsFrameMessageManager::GetProcessMessageManager(ErrorResult& aError) {
|
|
RefPtr<ProcessMessageManager> pmm;
|
|
if (mCallback) {
|
|
pmm = mCallback->GetProcessMessageManager();
|
|
}
|
|
return pmm.forget();
|
|
}
|
|
|
|
void nsFrameMessageManager::GetRemoteType(nsACString& aRemoteType,
|
|
ErrorResult& aError) const {
|
|
aRemoteType.Truncate();
|
|
if (mCallback) {
|
|
mCallback->DoGetRemoteType(aRemoteType, aError);
|
|
}
|
|
}
|
|
|
|
namespace {
|
|
|
|
struct MessageManagerReferentCount {
|
|
MessageManagerReferentCount() : mStrong(0), mWeakAlive(0), mWeakDead(0) {}
|
|
size_t mStrong;
|
|
size_t mWeakAlive;
|
|
size_t mWeakDead;
|
|
nsTArray<nsString> mSuspectMessages;
|
|
nsTHashMap<nsStringHashKey, uint32_t> mMessageCounter;
|
|
};
|
|
|
|
} // namespace
|
|
|
|
namespace mozilla::dom {
|
|
|
|
class MessageManagerReporter final : public nsIMemoryReporter {
|
|
~MessageManagerReporter() = default;
|
|
|
|
public:
|
|
NS_DECL_ISUPPORTS
|
|
NS_DECL_NSIMEMORYREPORTER
|
|
|
|
static const size_t kSuspectReferentCount = 300;
|
|
|
|
protected:
|
|
void CountReferents(nsFrameMessageManager* aMessageManager,
|
|
MessageManagerReferentCount* aReferentCount);
|
|
};
|
|
|
|
NS_IMPL_ISUPPORTS(MessageManagerReporter, nsIMemoryReporter)
|
|
|
|
void MessageManagerReporter::CountReferents(
|
|
nsFrameMessageManager* aMessageManager,
|
|
MessageManagerReferentCount* aReferentCount) {
|
|
for (const auto& entry : aMessageManager->mListeners) {
|
|
nsAutoTObserverArray<nsMessageListenerInfo, 1>* listeners = entry.GetWeak();
|
|
uint32_t listenerCount = listeners->Length();
|
|
if (listenerCount == 0) {
|
|
continue;
|
|
}
|
|
|
|
nsString key(entry.GetKey());
|
|
const uint32_t currentCount =
|
|
(aReferentCount->mMessageCounter.LookupOrInsert(key, 0) +=
|
|
listenerCount);
|
|
|
|
// Keep track of messages that have a suspiciously large
|
|
// number of referents (symptom of leak).
|
|
if (currentCount >= MessageManagerReporter::kSuspectReferentCount) {
|
|
aReferentCount->mSuspectMessages.AppendElement(key);
|
|
}
|
|
|
|
for (uint32_t i = 0; i < listenerCount; ++i) {
|
|
const nsMessageListenerInfo& listenerInfo = listeners->ElementAt(i);
|
|
if (listenerInfo.mWeakListener) {
|
|
nsCOMPtr<nsISupports> referent =
|
|
do_QueryReferent(listenerInfo.mWeakListener);
|
|
if (referent) {
|
|
aReferentCount->mWeakAlive++;
|
|
} else {
|
|
aReferentCount->mWeakDead++;
|
|
}
|
|
} else {
|
|
aReferentCount->mStrong++;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Add referent count in child managers because the listeners
|
|
// participate in messages dispatched from parent message manager.
|
|
for (uint32_t i = 0; i < aMessageManager->mChildManagers.Length(); ++i) {
|
|
RefPtr<nsFrameMessageManager> mm = aMessageManager->mChildManagers[i];
|
|
CountReferents(mm, aReferentCount);
|
|
}
|
|
}
|
|
|
|
static void ReportReferentCount(
|
|
const char* aManagerType, const MessageManagerReferentCount& aReferentCount,
|
|
nsIHandleReportCallback* aHandleReport, nsISupports* aData) {
|
|
#define REPORT(_path, _amount, _desc) \
|
|
do { \
|
|
aHandleReport->Callback(""_ns, _path, nsIMemoryReporter::KIND_OTHER, \
|
|
nsIMemoryReporter::UNITS_COUNT, _amount, _desc, \
|
|
aData); \
|
|
} while (0)
|
|
|
|
REPORT(nsPrintfCString("message-manager/referent/%s/strong", aManagerType),
|
|
aReferentCount.mStrong,
|
|
nsPrintfCString("The number of strong referents held by the message "
|
|
"manager in the %s manager.",
|
|
aManagerType));
|
|
REPORT(
|
|
nsPrintfCString("message-manager/referent/%s/weak/alive", aManagerType),
|
|
aReferentCount.mWeakAlive,
|
|
nsPrintfCString("The number of weak referents that are still alive "
|
|
"held by the message manager in the %s manager.",
|
|
aManagerType));
|
|
REPORT(nsPrintfCString("message-manager/referent/%s/weak/dead", aManagerType),
|
|
aReferentCount.mWeakDead,
|
|
nsPrintfCString("The number of weak referents that are dead "
|
|
"held by the message manager in the %s manager.",
|
|
aManagerType));
|
|
|
|
for (uint32_t i = 0; i < aReferentCount.mSuspectMessages.Length(); i++) {
|
|
const uint32_t totalReferentCount =
|
|
aReferentCount.mMessageCounter.Get(aReferentCount.mSuspectMessages[i]);
|
|
NS_ConvertUTF16toUTF8 suspect(aReferentCount.mSuspectMessages[i]);
|
|
REPORT(nsPrintfCString("message-manager-suspect/%s/referent(message=%s)",
|
|
aManagerType, suspect.get()),
|
|
totalReferentCount,
|
|
nsPrintfCString("A message in the %s message manager with a "
|
|
"suspiciously large number of referents (symptom "
|
|
"of a leak).",
|
|
aManagerType));
|
|
}
|
|
|
|
#undef REPORT
|
|
}
|
|
|
|
static StaticRefPtr<ChromeMessageBroadcaster> sGlobalMessageManager;
|
|
|
|
NS_IMETHODIMP
|
|
MessageManagerReporter::CollectReports(nsIHandleReportCallback* aHandleReport,
|
|
nsISupports* aData, bool aAnonymize) {
|
|
if (XRE_IsParentProcess() && sGlobalMessageManager) {
|
|
MessageManagerReferentCount count;
|
|
CountReferents(sGlobalMessageManager, &count);
|
|
ReportReferentCount("global-manager", count, aHandleReport, aData);
|
|
}
|
|
|
|
if (nsFrameMessageManager::sParentProcessManager) {
|
|
MessageManagerReferentCount count;
|
|
CountReferents(nsFrameMessageManager::sParentProcessManager, &count);
|
|
ReportReferentCount("parent-process-manager", count, aHandleReport, aData);
|
|
}
|
|
|
|
if (nsFrameMessageManager::sChildProcessManager) {
|
|
MessageManagerReferentCount count;
|
|
CountReferents(nsFrameMessageManager::sChildProcessManager, &count);
|
|
ReportReferentCount("child-process-manager", count, aHandleReport, aData);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
} // namespace mozilla::dom
|
|
|
|
already_AddRefed<ChromeMessageBroadcaster>
|
|
nsFrameMessageManager::GetGlobalMessageManager() {
|
|
RefPtr<ChromeMessageBroadcaster> mm;
|
|
if (sGlobalMessageManager) {
|
|
mm = sGlobalMessageManager;
|
|
} else {
|
|
sGlobalMessageManager = mm =
|
|
new ChromeMessageBroadcaster(MessageManagerFlags::MM_GLOBAL);
|
|
ClearOnShutdown(&sGlobalMessageManager);
|
|
RegisterStrongMemoryReporter(new MessageManagerReporter());
|
|
}
|
|
return mm.forget();
|
|
}
|
|
|
|
nsresult NS_NewGlobalMessageManager(nsISupports** aResult) {
|
|
*aResult = nsFrameMessageManager::GetGlobalMessageManager().take();
|
|
return NS_OK;
|
|
}
|
|
|
|
nsTHashMap<nsStringHashKey, nsMessageManagerScriptHolder*>*
|
|
nsMessageManagerScriptExecutor::sCachedScripts = nullptr;
|
|
StaticRefPtr<nsScriptCacheCleaner>
|
|
nsMessageManagerScriptExecutor::sScriptCacheCleaner;
|
|
|
|
void nsMessageManagerScriptExecutor::DidCreateScriptLoader() {
|
|
if (!sCachedScripts) {
|
|
sCachedScripts =
|
|
new nsTHashMap<nsStringHashKey, nsMessageManagerScriptHolder*>;
|
|
sScriptCacheCleaner = new nsScriptCacheCleaner();
|
|
}
|
|
}
|
|
|
|
// static
|
|
void nsMessageManagerScriptExecutor::PurgeCache() {
|
|
if (sCachedScripts) {
|
|
NS_ASSERTION(sCachedScripts != nullptr, "Need cached scripts");
|
|
for (auto iter = sCachedScripts->Iter(); !iter.Done(); iter.Next()) {
|
|
delete iter.Data();
|
|
iter.Remove();
|
|
}
|
|
}
|
|
}
|
|
|
|
// static
|
|
void nsMessageManagerScriptExecutor::Shutdown() {
|
|
if (sCachedScripts) {
|
|
PurgeCache();
|
|
|
|
delete sCachedScripts;
|
|
sCachedScripts = nullptr;
|
|
sScriptCacheCleaner = nullptr;
|
|
}
|
|
}
|
|
|
|
static void FillCompileOptionsForCachedStencil(JS::CompileOptions& aOptions) {
|
|
ScriptPreloader::FillCompileOptionsForCachedStencil(aOptions);
|
|
aOptions.setNonSyntacticScope(true);
|
|
}
|
|
|
|
void nsMessageManagerScriptExecutor::LoadScriptInternal(
|
|
JS::Handle<JSObject*> aMessageManager, const nsAString& aURL,
|
|
bool aRunInUniqueScope) {
|
|
AUTO_PROFILER_LABEL_DYNAMIC_LOSSY_NSSTRING(
|
|
"nsMessageManagerScriptExecutor::LoadScriptInternal", OTHER, aURL);
|
|
|
|
if (!sCachedScripts) {
|
|
return;
|
|
}
|
|
|
|
RefPtr<JS::Stencil> stencil;
|
|
nsMessageManagerScriptHolder* holder = sCachedScripts->Get(aURL);
|
|
if (holder) {
|
|
stencil = holder->mStencil;
|
|
} else {
|
|
stencil =
|
|
TryCacheLoadAndCompileScript(aURL, aRunInUniqueScope, aMessageManager);
|
|
}
|
|
|
|
AutoEntryScript aes(aMessageManager, "message manager script load");
|
|
JSContext* cx = aes.cx();
|
|
if (stencil) {
|
|
JS::CompileOptions options(cx);
|
|
FillCompileOptionsForCachedStencil(options);
|
|
JS::InstantiateOptions instantiateOptions(options);
|
|
JS::Rooted<JSScript*> script(
|
|
cx, JS::InstantiateGlobalStencil(cx, instantiateOptions, stencil));
|
|
|
|
if (script) {
|
|
if (aRunInUniqueScope) {
|
|
JS::Rooted<JSObject*> scope(cx);
|
|
bool ok = js::ExecuteInFrameScriptEnvironment(cx, aMessageManager,
|
|
script, &scope);
|
|
if (ok) {
|
|
// Force the scope to stay alive.
|
|
mAnonymousGlobalScopes.AppendElement(scope);
|
|
}
|
|
} else {
|
|
JS::Rooted<JS::Value> rval(cx);
|
|
JS::RootedVector<JSObject*> envChain(cx);
|
|
if (!envChain.append(aMessageManager)) {
|
|
return;
|
|
}
|
|
Unused << JS_ExecuteScript(cx, envChain, script, &rval);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
already_AddRefed<JS::Stencil>
|
|
nsMessageManagerScriptExecutor::TryCacheLoadAndCompileScript(
|
|
const nsAString& aURL, bool aRunInUniqueScope,
|
|
JS::Handle<JSObject*> aMessageManager) {
|
|
nsCString url = NS_ConvertUTF16toUTF8(aURL);
|
|
nsCOMPtr<nsIURI> uri;
|
|
nsresult rv = NS_NewURI(getter_AddRefs(uri), url);
|
|
if (NS_FAILED(rv)) {
|
|
return nullptr;
|
|
}
|
|
|
|
bool hasFlags;
|
|
rv = NS_URIChainHasFlags(uri, nsIProtocolHandler::URI_IS_LOCAL_RESOURCE,
|
|
&hasFlags);
|
|
if (NS_FAILED(rv) || !hasFlags) {
|
|
NS_WARNING("Will not load a frame script!");
|
|
return nullptr;
|
|
}
|
|
|
|
// If this script won't be cached, or there is only one of this type of
|
|
// message manager per process, treat this script as run-once. Run-once
|
|
// scripts can be compiled directly for the target global, and will be dropped
|
|
// from the preloader cache after they're executed and serialized.
|
|
//
|
|
// NOTE: This does not affect the JS::CompileOptions. We generate the same
|
|
// bytecode as though it were run multiple times. This is required for the
|
|
// batch decoding from ScriptPreloader to work.
|
|
bool isRunOnce = IsProcessScoped();
|
|
|
|
// We don't cache data: scripts!
|
|
nsAutoCString scheme;
|
|
uri->GetScheme(scheme);
|
|
bool isCacheable = !scheme.EqualsLiteral("data");
|
|
bool useScriptPreloader = isCacheable;
|
|
|
|
// If the script will be reused in this session, compile it in the compilation
|
|
// scope instead of the current global to avoid keeping the current
|
|
// compartment alive.
|
|
AutoJSAPI jsapi;
|
|
if (!jsapi.Init(isRunOnce ? aMessageManager : xpc::CompilationScope())) {
|
|
return nullptr;
|
|
}
|
|
JSContext* cx = jsapi.cx();
|
|
|
|
RefPtr<JS::Stencil> stencil;
|
|
if (useScriptPreloader) {
|
|
nsAutoCString cachePath;
|
|
rv = scache::PathifyURI(CACHE_PREFIX("script"), uri, cachePath);
|
|
NS_ENSURE_SUCCESS(rv, nullptr);
|
|
|
|
JS::DecodeOptions decodeOptions;
|
|
ScriptPreloader::FillDecodeOptionsForCachedStencil(decodeOptions);
|
|
stencil = ScriptPreloader::GetChildSingleton().GetCachedStencil(
|
|
cx, decodeOptions, cachePath);
|
|
}
|
|
|
|
if (!stencil) {
|
|
nsCOMPtr<nsIChannel> channel;
|
|
NS_NewChannel(getter_AddRefs(channel), uri,
|
|
nsContentUtils::GetSystemPrincipal(),
|
|
nsILoadInfo::SEC_ALLOW_CROSS_ORIGIN_SEC_CONTEXT_IS_NULL,
|
|
nsIContentPolicy::TYPE_INTERNAL_FRAME_MESSAGEMANAGER_SCRIPT);
|
|
|
|
if (!channel) {
|
|
return nullptr;
|
|
}
|
|
|
|
nsCOMPtr<nsIInputStream> input;
|
|
rv = channel->Open(getter_AddRefs(input));
|
|
NS_ENSURE_SUCCESS(rv, nullptr);
|
|
nsString dataString;
|
|
char16_t* dataStringBuf = nullptr;
|
|
size_t dataStringLength = 0;
|
|
if (input) {
|
|
nsCString buffer;
|
|
uint64_t written;
|
|
if (NS_FAILED(NS_ReadInputStreamToString(input, buffer, -1, &written))) {
|
|
return nullptr;
|
|
}
|
|
|
|
uint32_t size = (uint32_t)std::min(written, (uint64_t)UINT32_MAX);
|
|
ScriptLoader::ConvertToUTF16(channel, (uint8_t*)buffer.get(), size,
|
|
u""_ns, nullptr, dataStringBuf,
|
|
dataStringLength);
|
|
}
|
|
|
|
if (!dataStringBuf || dataStringLength == 0) {
|
|
return nullptr;
|
|
}
|
|
|
|
JS::CompileOptions options(cx);
|
|
FillCompileOptionsForCachedStencil(options);
|
|
options.setFileAndLine(url.get(), 1);
|
|
|
|
// If we are not encoding to the ScriptPreloader cache, we can now relax the
|
|
// compile options and use the JS syntax-parser for lower latency.
|
|
if (!useScriptPreloader || !ScriptPreloader::GetChildSingleton().Active()) {
|
|
options.setSourceIsLazy(false);
|
|
}
|
|
|
|
JS::UniqueTwoByteChars srcChars(dataStringBuf);
|
|
|
|
JS::SourceText<char16_t> srcBuf;
|
|
if (!srcBuf.init(cx, std::move(srcChars), dataStringLength)) {
|
|
return nullptr;
|
|
}
|
|
|
|
stencil = JS::CompileGlobalScriptToStencil(cx, options, srcBuf);
|
|
if (!stencil) {
|
|
return nullptr;
|
|
}
|
|
|
|
if (isCacheable && !isRunOnce) {
|
|
// Store into our cache only when we compile it here.
|
|
auto* holder = new nsMessageManagerScriptHolder(stencil);
|
|
sCachedScripts->InsertOrUpdate(aURL, holder);
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
// The above shouldn't touch any options for instantiation.
|
|
JS::InstantiateOptions instantiateOptions(options);
|
|
instantiateOptions.assertDefault();
|
|
#endif
|
|
}
|
|
|
|
MOZ_ASSERT(stencil);
|
|
|
|
if (useScriptPreloader) {
|
|
nsAutoCString cachePath;
|
|
rv = scache::PathifyURI(CACHE_PREFIX("script"), uri, cachePath);
|
|
NS_ENSURE_SUCCESS(rv, nullptr);
|
|
ScriptPreloader::GetChildSingleton().NoteStencil(url, cachePath, stencil,
|
|
isRunOnce);
|
|
}
|
|
|
|
return stencil.forget();
|
|
}
|
|
|
|
void nsMessageManagerScriptExecutor::Trace(const TraceCallbacks& aCallbacks,
|
|
void* aClosure) {
|
|
for (size_t i = 0, length = mAnonymousGlobalScopes.Length(); i < length;
|
|
++i) {
|
|
aCallbacks.Trace(&mAnonymousGlobalScopes[i], "mAnonymousGlobalScopes[i]",
|
|
aClosure);
|
|
}
|
|
}
|
|
|
|
void nsMessageManagerScriptExecutor::Unlink() {
|
|
ImplCycleCollectionUnlink(mAnonymousGlobalScopes);
|
|
}
|
|
|
|
bool nsMessageManagerScriptExecutor::Init() {
|
|
DidCreateScriptLoader();
|
|
return true;
|
|
}
|
|
|
|
void nsMessageManagerScriptExecutor::MarkScopesForCC() {
|
|
for (uint32_t i = 0; i < mAnonymousGlobalScopes.Length(); ++i) {
|
|
mAnonymousGlobalScopes[i].exposeToActiveJS();
|
|
}
|
|
}
|
|
|
|
NS_IMPL_ISUPPORTS(nsScriptCacheCleaner, nsIObserver)
|
|
|
|
ChildProcessMessageManager* nsFrameMessageManager::sChildProcessManager =
|
|
nullptr;
|
|
ParentProcessMessageManager* nsFrameMessageManager::sParentProcessManager =
|
|
nullptr;
|
|
nsFrameMessageManager* nsFrameMessageManager::sSameProcessParentManager =
|
|
nullptr;
|
|
|
|
class nsAsyncMessageToSameProcessChild : public nsSameProcessAsyncMessageBase,
|
|
public Runnable {
|
|
public:
|
|
nsAsyncMessageToSameProcessChild()
|
|
: nsSameProcessAsyncMessageBase(),
|
|
mozilla::Runnable("nsAsyncMessageToSameProcessChild") {}
|
|
NS_IMETHOD Run() override {
|
|
nsFrameMessageManager* ppm =
|
|
nsFrameMessageManager::GetChildProcessManager();
|
|
ReceiveMessage(ppm, nullptr, ppm);
|
|
return NS_OK;
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Send messages to an imaginary child process in a single-process scenario.
|
|
*/
|
|
class SameParentProcessMessageManagerCallback : public MessageManagerCallback {
|
|
public:
|
|
SameParentProcessMessageManagerCallback() {
|
|
MOZ_COUNT_CTOR(SameParentProcessMessageManagerCallback);
|
|
}
|
|
~SameParentProcessMessageManagerCallback() override {
|
|
MOZ_COUNT_DTOR(SameParentProcessMessageManagerCallback);
|
|
}
|
|
|
|
bool DoLoadMessageManagerScript(const nsAString& aURL,
|
|
bool aRunInGlobalScope) override {
|
|
auto* global = ContentProcessMessageManager::Get();
|
|
MOZ_ASSERT(!aRunInGlobalScope);
|
|
global->LoadScript(aURL);
|
|
return true;
|
|
}
|
|
|
|
nsresult DoSendAsyncMessage(const nsAString& aMessage,
|
|
StructuredCloneData& aData) override {
|
|
RefPtr<nsAsyncMessageToSameProcessChild> ev =
|
|
new nsAsyncMessageToSameProcessChild();
|
|
|
|
nsresult rv = ev->Init(aMessage, aData);
|
|
if (NS_FAILED(rv)) {
|
|
return rv;
|
|
}
|
|
rv = NS_DispatchToCurrentThread(ev);
|
|
if (NS_FAILED(rv)) {
|
|
return rv;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Send messages to the parent process.
|
|
*/
|
|
class ChildProcessMessageManagerCallback : public MessageManagerCallback {
|
|
public:
|
|
ChildProcessMessageManagerCallback() {
|
|
MOZ_COUNT_CTOR(ChildProcessMessageManagerCallback);
|
|
}
|
|
~ChildProcessMessageManagerCallback() override {
|
|
MOZ_COUNT_DTOR(ChildProcessMessageManagerCallback);
|
|
}
|
|
|
|
bool DoSendBlockingMessage(const nsAString& aMessage,
|
|
StructuredCloneData& aData,
|
|
nsTArray<StructuredCloneData>* aRetVal) override {
|
|
mozilla::dom::ContentChild* cc = mozilla::dom::ContentChild::GetSingleton();
|
|
if (!cc) {
|
|
return true;
|
|
}
|
|
ClonedMessageData data;
|
|
if (!BuildClonedMessageData(aData, data)) {
|
|
return false;
|
|
}
|
|
return cc->SendSyncMessage(PromiseFlatString(aMessage), data, aRetVal);
|
|
}
|
|
|
|
nsresult DoSendAsyncMessage(const nsAString& aMessage,
|
|
StructuredCloneData& aData) override {
|
|
mozilla::dom::ContentChild* cc = mozilla::dom::ContentChild::GetSingleton();
|
|
if (!cc) {
|
|
return NS_OK;
|
|
}
|
|
ClonedMessageData data;
|
|
if (!BuildClonedMessageData(aData, data)) {
|
|
return NS_ERROR_DOM_DATA_CLONE_ERR;
|
|
}
|
|
if (!cc->SendAsyncMessage(PromiseFlatString(aMessage), data)) {
|
|
return NS_ERROR_UNEXPECTED;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
};
|
|
|
|
class nsAsyncMessageToSameProcessParent
|
|
: public nsSameProcessAsyncMessageBase,
|
|
public SameProcessMessageQueue::Runnable {
|
|
public:
|
|
nsAsyncMessageToSameProcessParent() : nsSameProcessAsyncMessageBase() {}
|
|
nsresult HandleMessage() override {
|
|
nsFrameMessageManager* ppm =
|
|
nsFrameMessageManager::sSameProcessParentManager;
|
|
ReceiveMessage(ppm, nullptr, ppm);
|
|
return NS_OK;
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Send messages to the imaginary parent process in a single-process scenario.
|
|
*/
|
|
class SameChildProcessMessageManagerCallback : public MessageManagerCallback {
|
|
public:
|
|
SameChildProcessMessageManagerCallback() {
|
|
MOZ_COUNT_CTOR(SameChildProcessMessageManagerCallback);
|
|
}
|
|
~SameChildProcessMessageManagerCallback() override {
|
|
MOZ_COUNT_DTOR(SameChildProcessMessageManagerCallback);
|
|
}
|
|
|
|
bool DoSendBlockingMessage(const nsAString& aMessage,
|
|
StructuredCloneData& aData,
|
|
nsTArray<StructuredCloneData>* aRetVal) override {
|
|
SameProcessMessageQueue* queue = SameProcessMessageQueue::Get();
|
|
queue->Flush();
|
|
|
|
if (nsFrameMessageManager::sSameProcessParentManager) {
|
|
RefPtr<nsFrameMessageManager> ppm =
|
|
nsFrameMessageManager::sSameProcessParentManager;
|
|
ppm->ReceiveMessage(ppm, nullptr, aMessage, true, &aData, aRetVal,
|
|
IgnoreErrors());
|
|
}
|
|
return true;
|
|
}
|
|
|
|
nsresult DoSendAsyncMessage(const nsAString& aMessage,
|
|
StructuredCloneData& aData) override {
|
|
SameProcessMessageQueue* queue = SameProcessMessageQueue::Get();
|
|
RefPtr<nsAsyncMessageToSameProcessParent> ev =
|
|
new nsAsyncMessageToSameProcessParent();
|
|
nsresult rv = ev->Init(aMessage, aData);
|
|
|
|
if (NS_FAILED(rv)) {
|
|
return rv;
|
|
}
|
|
queue->Push(ev);
|
|
return NS_OK;
|
|
}
|
|
};
|
|
|
|
// This creates the global parent process message manager.
|
|
nsresult NS_NewParentProcessMessageManager(nsISupports** aResult) {
|
|
NS_ASSERTION(!nsFrameMessageManager::sParentProcessManager,
|
|
"Re-creating sParentProcessManager");
|
|
RefPtr<ParentProcessMessageManager> mm = new ParentProcessMessageManager();
|
|
nsFrameMessageManager::sParentProcessManager = mm;
|
|
nsFrameMessageManager::NewProcessMessageManager(
|
|
false); // Create same process message manager.
|
|
mm.forget(aResult);
|
|
return NS_OK;
|
|
}
|
|
|
|
ProcessMessageManager* nsFrameMessageManager::NewProcessMessageManager(
|
|
bool aIsRemote) {
|
|
if (!nsFrameMessageManager::sParentProcessManager) {
|
|
nsCOMPtr<nsISupports> dummy =
|
|
do_GetService("@mozilla.org/parentprocessmessagemanager;1");
|
|
}
|
|
|
|
MOZ_ASSERT(nsFrameMessageManager::sParentProcessManager,
|
|
"parent process manager not created");
|
|
ProcessMessageManager* mm;
|
|
if (aIsRemote) {
|
|
// Callback is set in ContentParent::InitInternal so that the process has
|
|
// already started when we send pending scripts.
|
|
mm = new ProcessMessageManager(
|
|
nullptr, nsFrameMessageManager::sParentProcessManager);
|
|
} else {
|
|
mm =
|
|
new ProcessMessageManager(new SameParentProcessMessageManagerCallback(),
|
|
nsFrameMessageManager::sParentProcessManager,
|
|
MessageManagerFlags::MM_OWNSCALLBACK);
|
|
mm->SetOsPid(base::GetCurrentProcId());
|
|
sSameProcessParentManager = mm;
|
|
}
|
|
return mm;
|
|
}
|
|
|
|
nsresult NS_NewChildProcessMessageManager(nsISupports** aResult) {
|
|
NS_ASSERTION(!nsFrameMessageManager::GetChildProcessManager(),
|
|
"Re-creating sChildProcessManager");
|
|
|
|
MessageManagerCallback* cb;
|
|
if (XRE_IsParentProcess()) {
|
|
cb = new SameChildProcessMessageManagerCallback();
|
|
} else {
|
|
cb = new ChildProcessMessageManagerCallback();
|
|
RegisterStrongMemoryReporter(new MessageManagerReporter());
|
|
}
|
|
auto* mm = new ChildProcessMessageManager(cb);
|
|
nsFrameMessageManager::SetChildProcessManager(mm);
|
|
auto global = MakeRefPtr<ContentProcessMessageManager>(mm);
|
|
NS_ENSURE_TRUE(global->Init(), NS_ERROR_UNEXPECTED);
|
|
return CallQueryInterface(global, aResult);
|
|
}
|
|
|
|
void nsFrameMessageManager::MarkForCC() {
|
|
for (const auto& entry : mListeners) {
|
|
nsAutoTObserverArray<nsMessageListenerInfo, 1>* listeners = entry.GetWeak();
|
|
uint32_t count = listeners->Length();
|
|
for (uint32_t i = 0; i < count; i++) {
|
|
MessageListener* strongListener = listeners->ElementAt(i).mStrongListener;
|
|
if (strongListener) {
|
|
strongListener->MarkForCC();
|
|
}
|
|
}
|
|
}
|
|
|
|
if (mRefCnt.IsPurple()) {
|
|
mRefCnt.RemovePurple();
|
|
}
|
|
}
|
|
|
|
nsSameProcessAsyncMessageBase::nsSameProcessAsyncMessageBase()
|
|
#ifdef DEBUG
|
|
: mCalledInit(false)
|
|
#endif
|
|
{
|
|
}
|
|
|
|
nsresult nsSameProcessAsyncMessageBase::Init(const nsAString& aMessage,
|
|
StructuredCloneData& aData) {
|
|
if (!mData.Copy(aData)) {
|
|
Telemetry::Accumulate(Telemetry::IPC_SAME_PROCESS_MESSAGE_COPY_OOM_KB,
|
|
aData.DataLength());
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
mMessage = aMessage;
|
|
#ifdef DEBUG
|
|
mCalledInit = true;
|
|
#endif
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void nsSameProcessAsyncMessageBase::ReceiveMessage(
|
|
nsISupports* aTarget, nsFrameLoader* aTargetFrameLoader,
|
|
nsFrameMessageManager* aManager) {
|
|
// Make sure that we have called Init() and it has succeeded.
|
|
MOZ_ASSERT(mCalledInit);
|
|
if (aManager) {
|
|
RefPtr<nsFrameMessageManager> mm = aManager;
|
|
mm->ReceiveMessage(aTarget, aTargetFrameLoader, mMessage, false, &mData,
|
|
nullptr, IgnoreErrors());
|
|
}
|
|
}
|