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/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 40 -*- */
/* vim: set ts=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 "DaemonSocket.h"
#include "mozilla/ipc/DaemonSocketConsumer.h"
#include "mozilla/ipc/DaemonSocketPDU.h"
#include "mozilla/UniquePtr.h"
#include "nsISupportsImpl.h" // for MOZ_COUNT_CTOR, MOZ_COUNT_DTOR
#ifdef CHROMIUM_LOG
#undef CHROMIUM_LOG
#endif
#include <stdio.h>
#define IODEBUG true
#define CHROMIUM_LOG(args...) if (IODEBUG) printf(args);
namespace mozilla {
namespace ipc {
//
// DaemonSocketIO
//
class DaemonSocketIO final : public ConnectionOrientedSocketIO
{
public:
DaemonSocketIO(MessageLoop* aConsumerLoop,
MessageLoop* aIOLoop,
int aFd, ConnectionStatus aConnectionStatus,
UnixSocketConnector* aConnector,
DaemonSocket* aConnection,
DaemonSocketIOConsumer* aConsumer);
~DaemonSocketIO();
// Methods for |DataSocketIO|
//
nsresult QueryReceiveBuffer(UnixSocketIOBuffer** aBuffer) override;
void ConsumeBuffer() override;
void DiscardBuffer() override;
// Methods for |SocketIOBase|
//
SocketBase* GetSocketBase() override;
bool IsShutdownOnConsumerThread() const override;
bool IsShutdownOnIOThread() const override;
void ShutdownOnConsumerThread() override;
void ShutdownOnIOThread() override;
private:
DaemonSocket* mConnection;
DaemonSocketIOConsumer* mConsumer;
UniquePtr<DaemonSocketPDU> mPDU;
bool mShuttingDownOnIOThread;
};
DaemonSocketIO::DaemonSocketIO(
MessageLoop* aConsumerLoop,
MessageLoop* aIOLoop,
int aFd,
ConnectionStatus aConnectionStatus,
UnixSocketConnector* aConnector,
DaemonSocket* aConnection,
DaemonSocketIOConsumer* aConsumer)
: ConnectionOrientedSocketIO(aConsumerLoop,
aIOLoop,
aFd,
aConnectionStatus,
aConnector)
, mConnection(aConnection)
, mConsumer(aConsumer)
, mShuttingDownOnIOThread(false)
{
MOZ_ASSERT(mConnection);
MOZ_ASSERT(mConsumer);
MOZ_COUNT_CTOR_INHERITED(DaemonSocketIO, ConnectionOrientedSocketIO);
}
DaemonSocketIO::~DaemonSocketIO()
{
MOZ_COUNT_DTOR_INHERITED(DaemonSocketIO, ConnectionOrientedSocketIO);
}
// |DataSocketIO|
nsresult
DaemonSocketIO::QueryReceiveBuffer(UnixSocketIOBuffer** aBuffer)
{
MOZ_ASSERT(aBuffer);
if (!mPDU) {
/* There's only one PDU for receiving. We reuse it every time. */
mPDU = MakeUnique<DaemonSocketPDU>(DaemonSocketPDU::PDU_MAX_PAYLOAD_LENGTH);
}
*aBuffer = mPDU.get();
return NS_OK;
}
void
DaemonSocketIO::ConsumeBuffer()
{
MOZ_ASSERT(mConsumer);
mConsumer->Handle(*mPDU);
}
void
DaemonSocketIO::DiscardBuffer()
{
// Nothing to do.
}
// |SocketIOBase|
SocketBase*
DaemonSocketIO::GetSocketBase()
{
return mConnection;
}
bool
DaemonSocketIO::IsShutdownOnConsumerThread() const
{
MOZ_ASSERT(IsConsumerThread());
return mConnection == nullptr;
}
bool
DaemonSocketIO::IsShutdownOnIOThread() const
{
return mShuttingDownOnIOThread;
}
void
DaemonSocketIO::ShutdownOnConsumerThread()
{
MOZ_ASSERT(IsConsumerThread());
MOZ_ASSERT(!IsShutdownOnConsumerThread());
mConnection = nullptr;
}
void
DaemonSocketIO::ShutdownOnIOThread()
{
MOZ_ASSERT(!IsConsumerThread());
MOZ_ASSERT(!mShuttingDownOnIOThread);
Close(); // will also remove fd from I/O loop
mShuttingDownOnIOThread = true;
}
//
// DaemonSocket
//
DaemonSocket::DaemonSocket(
DaemonSocketIOConsumer* aIOConsumer,
DaemonSocketConsumer* aConsumer,
int aIndex)
: mIO(nullptr)
, mIOConsumer(aIOConsumer)
, mConsumer(aConsumer)
, mIndex(aIndex)
{
MOZ_ASSERT(mConsumer);
MOZ_COUNT_CTOR_INHERITED(DaemonSocket, ConnectionOrientedSocket);
}
DaemonSocket::~DaemonSocket()
{
MOZ_COUNT_DTOR_INHERITED(DaemonSocket, ConnectionOrientedSocket);
}
// |ConnectionOrientedSocket|
nsresult
DaemonSocket::PrepareAccept(UnixSocketConnector* aConnector,
MessageLoop* aConsumerLoop,
MessageLoop* aIOLoop,
ConnectionOrientedSocketIO*& aIO)
{
MOZ_ASSERT(!mIO);
SetConnectionStatus(SOCKET_CONNECTING);
mIO = new DaemonSocketIO(
aConsumerLoop, aIOLoop, -1, UnixSocketWatcher::SOCKET_IS_CONNECTING,
aConnector, this, mIOConsumer);
aIO = mIO;
return NS_OK;
}
// |DataSocket|
void
DaemonSocket::SendSocketData(UnixSocketIOBuffer* aBuffer)
{
MOZ_ASSERT(mIO);
MOZ_ASSERT(mIO->IsConsumerThread());
mIO->GetIOLoop()->PostTask(
MakeAndAddRef<SocketIOSendTask<DaemonSocketIO, UnixSocketIOBuffer>>(
mIO, aBuffer));
}
// |SocketBase|
void
DaemonSocket::Close()
{
if (!mIO) {
CHROMIUM_LOG("HAL daemon already disconnected!");
return;
}
MOZ_ASSERT(mIO->IsConsumerThread());
mIO->ShutdownOnConsumerThread();
mIO->GetIOLoop()->PostTask(MakeAndAddRef<SocketIOShutdownTask>(mIO));
mIO = nullptr;
NotifyDisconnect();
}
void
DaemonSocket::OnConnectSuccess()
{
mConsumer->OnConnectSuccess(mIndex);
}
void
DaemonSocket::OnConnectError()
{
mConsumer->OnConnectError(mIndex);
}
void
DaemonSocket::OnDisconnect()
{
mConsumer->OnDisconnect(mIndex);
}
}
}
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