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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* 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/. */
#ifndef mozilla_extensions_StreamFilterParent_h
#define mozilla_extensions_StreamFilterParent_h
#include "StreamFilterBase.h"
#include "mozilla/extensions/PStreamFilterParent.h"
#include "mozilla/LinkedList.h"
#include "mozilla/Mutex.h"
#include "mozilla/SystemGroup.h"
#include "mozilla/WebRequestService.h"
#include "nsIStreamListener.h"
#include "nsIThread.h"
#include "nsIThreadRetargetableStreamListener.h"
#include "nsThreadUtils.h"
#if defined(_MSC_VER)
#define FUNC __FUNCSIG__
#else
#define FUNC __PRETTY_FUNCTION__
#endif
namespace mozilla {
namespace dom {
class ContentParent;
}
namespace net {
class ChannelEventQueue;
class nsHttpChannel;
} // namespace net
namespace extensions {
using namespace mozilla::dom;
using mozilla::ipc::IPCResult;
class StreamFilterParent final : public PStreamFilterParent,
public nsIStreamListener,
public nsIThreadRetargetableStreamListener,
public StreamFilterBase {
public:
NS_DECL_THREADSAFE_ISUPPORTS
NS_DECL_NSISTREAMLISTENER
NS_DECL_NSIREQUESTOBSERVER
NS_DECL_NSITHREADRETARGETABLESTREAMLISTENER
StreamFilterParent();
using ParentEndpoint = mozilla::ipc::Endpoint<PStreamFilterParent>;
static bool Create(ContentParent* aContentParent, uint64_t aChannelId,
const nsAString& aAddonId,
mozilla::ipc::Endpoint<PStreamFilterChild>* aEndpoint);
static void Attach(nsIChannel* aChannel, ParentEndpoint&& aEndpoint);
enum class State {
// The parent has been created, but not yet constructed by the child.
Uninitialized,
// The parent has been successfully constructed.
Initialized,
// The OnRequestStarted event has been received, and data is being
// transferred to the child.
TransferringData,
// The channel is suspended.
Suspended,
// The channel has been closed by the child, and will send or receive data.
Closed,
// The channel is being disconnected from the child, so that all further
// data and events pass unfiltered to the output listener. Any data
// currnetly in transit to, or buffered by, the child will be written to the
// output listener before we enter the Disconnected atate.
Disconnecting,
// The channel has been disconnected from the child, and all further data
// and events will be passed directly to the output listener.
Disconnected,
};
protected:
virtual ~StreamFilterParent();
virtual IPCResult RecvWrite(Data&& aData) override;
virtual IPCResult RecvFlushedData() override;
virtual IPCResult RecvSuspend() override;
virtual IPCResult RecvResume() override;
virtual IPCResult RecvClose() override;
virtual IPCResult RecvDisconnect() override;
virtual IPCResult RecvDestroy() override;
virtual void DeallocPStreamFilterParent() override;
private:
bool IPCActive() {
return (mState != State::Closed && mState != State::Disconnecting &&
mState != State::Disconnected);
}
void Init(nsIChannel* aChannel);
void Bind(ParentEndpoint&& aEndpoint);
void Destroy();
nsresult FlushBufferedData();
nsresult Write(Data& aData);
void WriteMove(Data&& aData);
void DoSendData(Data&& aData);
nsresult EmitStopRequest(nsresult aStatusCode);
virtual void ActorDestroy(ActorDestroyReason aWhy) override;
void Broken();
void CheckResult(bool aResult) {
if (NS_WARN_IF(!aResult)) {
Broken();
}
}
inline nsIEventTarget* ActorThread();
inline nsIEventTarget* IOThread();
inline bool IsIOThread();
inline bool IsActorThread();
inline void AssertIsActorThread();
inline void AssertIsIOThread();
static void AssertIsMainThread() { MOZ_ASSERT(NS_IsMainThread()); }
template <typename Function>
void RunOnMainThread(const char* aName, Function&& aFunc);
void RunOnMainThread(already_AddRefed<Runnable> aRunnable);
template <typename Function>
void RunOnActorThread(const char* aName, Function&& aFunc);
template <typename Function>
void RunOnIOThread(const char* aName, Function&& aFunc);
void RunOnIOThread(already_AddRefed<Runnable>);
nsCOMPtr<nsIChannel> mChannel;
nsCOMPtr<nsIStreamListener> mOrigListener;
nsCOMPtr<nsIEventTarget> mMainThread;
nsCOMPtr<nsIEventTarget> mIOThread;
RefPtr<net::ChannelEventQueue> mQueue;
Mutex mBufferMutex;
bool mReceivedStop;
bool mSentStop;
bool mDisconnected = false;
nsCOMPtr<nsISupports> mContext;
uint64_t mOffset;
volatile State mState;
};
} // namespace extensions
} // namespace mozilla
#endif // mozilla_extensions_StreamFilterParent_h
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