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/*
* Copyright (C) 2001-2009 Jacek Sieka, arnetheduck on gmail point com
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef DCPLUSPLUS_DCPP_BUFFERED_SOCKET_H
#define DCPLUSPLUS_DCPP_BUFFERED_SOCKET_H
#include "forward.h"
#include "BufferedSocketListener.h"
#include "Semaphore.h"
#include "Thread.h"
#include "Speaker.h"
#include "Util.h"
#include "Socket.h"
namespace dcpp {
class BufferedSocket : public Speaker<BufferedSocketListener>, private Thread {
public:
enum Modes {
MODE_LINE,
MODE_ZPIPE,
MODE_DATA
};
/**
* BufferedSocket factory, each BufferedSocket may only be used to create one connection
* @param sep Line separator
* @return An unconnected socket
*/
static BufferedSocket* getSocket(char sep) throw(ThreadException) {
return new BufferedSocket(sep);
}
static void putSocket(BufferedSocket* aSock) {
if(aSock) {
aSock->removeListeners();
aSock->shutdown();
}
}
static void waitShutdown() {
while(sockets)
Thread::sleep(100);
}
void accept(const Socket& srv, bool secure, bool allowUntrusted) throw(SocketException);
void connect(const string& aAddress, uint16_t aPort, bool secure, bool allowUntrusted, bool proxy) throw(SocketException);
/** Sets data mode for aBytes bytes. Must be called within onLine. */
void setDataMode(int64_t aBytes = -1) { mode = MODE_DATA; dataBytes = aBytes; }
/**
* Rollback is an ugly hack to solve problems with compressed transfers where not all data received
* should be treated as data.
* Must be called from within onData.
*/
void setLineMode(size_t aRollback) { setMode (MODE_LINE, aRollback);}
void setMode(Modes mode, size_t aRollback = 0);
Modes getMode() const { return mode; }
const string& getIp() const { return sock->getIp(); }
bool isConnected() const { return sock->isConnected(); }
bool isSecure() const { return sock->isSecure(); }
bool isTrusted() const { return sock->isTrusted(); }
std::string getCipherName() const { return sock->getCipherName(); }
void write(const string& aData) { write(aData.data(), aData.length()); }
void write(const char* aBuf, size_t aLen) throw();
/** Send the file f over this socket. */
void transmitFile(InputStream* f) { Lock l(cs); addTask(SEND_FILE, new SendFileInfo(f)); }
/** Send an updated signal to all listeners */
void updated() { Lock l(cs); addTask(UPDATED, 0); }
void disconnect(bool graceless = false) throw() { Lock l(cs); if(graceless) disconnecting = true; addTask(DISCONNECT, 0); }
string getLocalIp() const { return sock->getLocalIp(); }
GETSET(char, separator, Separator)
private:
enum Tasks {
CONNECT,
DISCONNECT,
SEND_DATA,
SEND_FILE,
SHUTDOWN,
ACCEPTED,
UPDATED
};
enum State {
STARTING, // Waiting for CONNECT/ACCEPTED/SHUTDOWN
RUNNING,
FAILED
};
struct TaskData {
virtual ~TaskData() { }
};
struct ConnectInfo : public TaskData {
ConnectInfo(string addr_, uint16_t port_, bool proxy_) : addr(addr_), port(port_), proxy(proxy_) { }
string addr;
uint16_t port;
bool proxy;
};
struct SendFileInfo : public TaskData {
SendFileInfo(InputStream* stream_) : stream(stream_) { }
InputStream* stream;
};
BufferedSocket(char aSeparator) throw(ThreadException);
virtual ~BufferedSocket() throw();
CriticalSection cs;
Semaphore taskSem;
deque<pair<Tasks, boost::shared_ptr<TaskData> > > tasks;
Modes mode;
std::auto_ptr<UnZFilter> filterIn;
int64_t dataBytes;
size_t rollback;
string line;
ByteVector inbuf;
ByteVector writeBuf;
ByteVector sendBuf;
std::auto_ptr<Socket> sock;
State state;
bool disconnecting;
virtual int run();
void threadConnect(const string& aAddr, uint16_t aPort, bool proxy) throw(SocketException);
void threadAccept() throw(SocketException);
void threadRead() throw(Exception);
void threadSendFile(InputStream* is) throw(Exception);
void threadSendData() throw(Exception);
void fail(const string& aError);
static volatile long sockets;
bool checkEvents() throw(Exception);
void checkSocket() throw(Exception);
void setSocket(std::auto_ptr<Socket> s);
void shutdown();
void addTask(Tasks task, TaskData* data);
};
} // namespace dcpp
#endif // !defined(BUFFERED_SOCKET_H)
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