зеркало из https://github.com/mozilla/gecko-dev.git
133 строки
3.7 KiB
C++
133 строки
3.7 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 "BroadcastChannelChild.h"
|
|
#include "BroadcastChannel.h"
|
|
#include "jsapi.h"
|
|
#include "mozilla/dom/ipc/BlobChild.h"
|
|
#include "mozilla/dom/File.h"
|
|
#include "mozilla/dom/MessageEvent.h"
|
|
#include "mozilla/dom/MessageEventBinding.h"
|
|
#include "mozilla/dom/StructuredCloneUtils.h"
|
|
#include "mozilla/dom/WorkerPrivate.h"
|
|
#include "mozilla/dom/WorkerScope.h"
|
|
#include "mozilla/dom/ScriptSettings.h"
|
|
#include "mozilla/ipc/PBackgroundChild.h"
|
|
#include "WorkerPrivate.h"
|
|
|
|
namespace mozilla {
|
|
|
|
using namespace ipc;
|
|
|
|
namespace dom {
|
|
|
|
using namespace workers;
|
|
|
|
BroadcastChannelChild::BroadcastChannelChild(const nsAString& aOrigin)
|
|
: mOrigin(aOrigin)
|
|
, mActorDestroyed(false)
|
|
{
|
|
}
|
|
|
|
BroadcastChannelChild::~BroadcastChannelChild()
|
|
{
|
|
MOZ_ASSERT(!mBC);
|
|
}
|
|
|
|
bool
|
|
BroadcastChannelChild::RecvNotify(const ClonedMessageData& aData)
|
|
{
|
|
// Make sure to retrieve all blobs from the message before returning to avoid
|
|
// leaking their actors.
|
|
nsTArray<nsRefPtr<Blob>> blobs;
|
|
if (!aData.blobsChild().IsEmpty()) {
|
|
blobs.SetCapacity(aData.blobsChild().Length());
|
|
|
|
for (uint32_t i = 0, len = aData.blobsChild().Length(); i < len; ++i) {
|
|
nsRefPtr<BlobImpl> impl =
|
|
static_cast<BlobChild*>(aData.blobsChild()[i])->GetBlobImpl();
|
|
|
|
nsRefPtr<Blob> blob = Blob::Create(mBC ? mBC->GetOwner() : nullptr, impl);
|
|
blobs.AppendElement(blob);
|
|
}
|
|
}
|
|
|
|
nsCOMPtr<DOMEventTargetHelper> helper = mBC;
|
|
nsCOMPtr<EventTarget> eventTarget = do_QueryInterface(helper);
|
|
|
|
// This object has been already closed by content or is going to be deleted
|
|
// soon. No notify is required.
|
|
if (!eventTarget || mBC->IsClosed()) {
|
|
return true;
|
|
}
|
|
|
|
// CheckInnerWindowCorrectness can be used also without a window when
|
|
// BroadcastChannel is running in a worker. In this case, it's a NOP.
|
|
if (NS_FAILED(mBC->CheckInnerWindowCorrectness())) {
|
|
return true;
|
|
}
|
|
|
|
AutoJSAPI jsapi;
|
|
nsCOMPtr<nsIGlobalObject> globalObject;
|
|
|
|
if (NS_IsMainThread()) {
|
|
globalObject = do_QueryInterface(mBC->GetParentObject());
|
|
} else {
|
|
WorkerPrivate* workerPrivate = GetCurrentThreadWorkerPrivate();
|
|
MOZ_ASSERT(workerPrivate);
|
|
globalObject = workerPrivate->GlobalScope();
|
|
}
|
|
|
|
if (!globalObject || !jsapi.Init(globalObject)) {
|
|
NS_WARNING("Failed to initialize AutoJSAPI object.");
|
|
return true;
|
|
}
|
|
|
|
JSContext* cx = jsapi.cx();
|
|
|
|
const SerializedStructuredCloneBuffer& buffer = aData.data();
|
|
StructuredCloneData cloneData;
|
|
cloneData.mData = buffer.data;
|
|
cloneData.mDataLength = buffer.dataLength;
|
|
cloneData.mClosure.mBlobs.SwapElements(blobs);
|
|
|
|
JS::Rooted<JS::Value> value(cx, JS::NullValue());
|
|
if (cloneData.mDataLength && !ReadStructuredClone(cx, cloneData, &value)) {
|
|
JS_ClearPendingException(cx);
|
|
return false;
|
|
}
|
|
|
|
RootedDictionary<MessageEventInit> init(cx);
|
|
init.mBubbles = false;
|
|
init.mCancelable = false;
|
|
init.mOrigin.Construct(mOrigin);
|
|
init.mData = value;
|
|
|
|
ErrorResult rv;
|
|
nsRefPtr<MessageEvent> event =
|
|
MessageEvent::Constructor(mBC, NS_LITERAL_STRING("message"), init, rv);
|
|
if (rv.Failed()) {
|
|
NS_WARNING("Failed to create a MessageEvent object.");
|
|
return true;
|
|
}
|
|
|
|
event->SetTrusted(true);
|
|
|
|
bool status;
|
|
mBC->DispatchEvent(static_cast<Event*>(event.get()), &status);
|
|
|
|
return true;
|
|
}
|
|
|
|
void
|
|
BroadcastChannelChild::ActorDestroy(ActorDestroyReason aWhy)
|
|
{
|
|
mActorDestroyed = true;
|
|
}
|
|
|
|
} // dom namespace
|
|
} // mozilla namespace
|