gecko/dom/bluetooth2/bluedroid/BluetoothSocketMessageWatcher.h
Thomas Zimmermann 889bfc527b Bug 1084342: Move |SocketMessageWatcher| to separate file, r=shawnjohnjr
This patch moves |SocketMessageWatcher| into a separate file. The new
Bluetooth daemon will require it's functionality for OPP profiles.
2014-10-28 10:34:09 +01:00

110 lines
3.0 KiB
C++

/* -*- 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 "base/message_loop.h"
#include "BluetoothCommon.h"
BEGIN_BLUETOOTH_NAMESPACE
class BluetoothSocketResultHandler;
/* |SocketMessageWatcher| receives Bluedroid's socket setup
* messages on the I/O thread. You need to inherit from this
* class to make use of it.
*
* Bluedroid sends two socket info messages (20 bytes) at
* the beginning of a connection to both peers.
*
* - 1st message: [channel:4]
* - 2nd message: [size:2][bd address:6][channel:4][connection status:4]
*
* On the server side, the second message will contain a
* socket file descriptor for the connection. The client
* uses the original file descriptor.
*/
class SocketMessageWatcher : public MessageLoopForIO::Watcher
{
public:
static const unsigned char MSG1_SIZE = 4;
static const unsigned char MSG2_SIZE = 16;
static const unsigned char OFF_CHANNEL1 = 0;
static const unsigned char OFF_SIZE = 4;
static const unsigned char OFF_BDADDRESS = 6;
static const unsigned char OFF_CHANNEL2 = 12;
static const unsigned char OFF_STATUS = 16;
virtual ~SocketMessageWatcher();
virtual void Proceed(BluetoothStatus aStatus) = 0;
void OnFileCanReadWithoutBlocking(int aFd) MOZ_OVERRIDE;
void OnFileCanWriteWithoutBlocking(int aFd) MOZ_OVERRIDE;
void Watch();
void StopWatching();
bool IsComplete() const;
int GetFd() const;
int32_t GetChannel1() const;
int32_t GetSize() const;
nsString GetBdAddress() const;
int32_t GetChannel2() const;
int32_t GetConnectionStatus() const;
int GetClientFd() const;
BluetoothSocketResultHandler* GetResultHandler() const;
protected:
SocketMessageWatcher(int aFd, BluetoothSocketResultHandler* aRes);
private:
BluetoothStatus RecvMsg1();
BluetoothStatus RecvMsg2();
int16_t ReadInt16(unsigned long aOffset) const;
int32_t ReadInt32(unsigned long aOffset) const;
void ReadBdAddress(unsigned long aOffset, nsAString& aBdAddress) const;
MessageLoopForIO::FileDescriptorWatcher mWatcher;
int mFd;
int mClientFd;
unsigned char mLen;
uint8_t mBuf[MSG1_SIZE + MSG2_SIZE];
nsRefPtr<BluetoothSocketResultHandler> mRes;
};
/* |SocketMessageWatcherTask| starts a SocketMessageWatcher
* on the I/O task
*/
class SocketMessageWatcherTask MOZ_FINAL : public Task
{
public:
SocketMessageWatcherTask(SocketMessageWatcher* aWatcher);
void Run() MOZ_OVERRIDE;
private:
SocketMessageWatcher* mWatcher;
};
/* |DeleteSocketMessageWatcherTask| deletes a watching SocketMessageWatcher
* on the I/O task
*/
class DeleteSocketMessageWatcherTask MOZ_FINAL : public Task
{
public:
DeleteSocketMessageWatcherTask(BluetoothSocketResultHandler* aRes);
void Run() MOZ_OVERRIDE;
private:
BluetoothSocketResultHandler* mRes;
};
END_BLUETOOTH_NAMESPACE