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/* <!-- copyright */
/*
* aria2 - a simple utility for downloading files faster
*
* Copyright (C) 2006 Tatsuhiro Tsujikawa
*
* 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
*/
/* copyright --> */
#ifndef _D_SOCKET_CORE_H_
#define _D_SOCKET_CORE_H_
#include <string>
#include <utility>
#include "common.h"
#ifdef HAVE_LIBSSL
// for SSL
# include <openssl/ssl.h>
#endif // HAVE_LIBSSL
using namespace std;
class SocketCore {
friend class Socket;
private:
// socket endpoint descriptor
int sockfd;
// reference counter for this object.
int use;
bool secure;
#ifdef HAVE_LIBSSL
// for SSL
SSL_CTX* sslCtx;
SSL* ssl;
#endif // HAVE_LIBSSL
void init();
SocketCore(int sockfd);
public:
SocketCore();
~SocketCore();
void beginListen();
void getAddrInfo(pair<string, int>& addrinfo) const;
SocketCore* acceptConnection() const;
/**
* Connects to the server named host and the destination port is port.
* This method make socket non-blocking mode.
* To make the socket blocking mode, call setBlockingMode() after
* the connection is established.
*/
void establishConnection(string host, int port);
void setBlockingMode() const;
// Closes the connection which this socket object has
void closeConnection();
// examines whether the socket of this SocketCore object is available for writing.
// returns true if the socket is available for writing, otherwise returns false.
bool isWritable(int timeout) const;
// examines whether the socket of this SocketCore object is available for reading.
// returns true if the socket is available for reading, otherwise returns false.
bool isReadable(int timeout) const;
// writes characters into the socket. data is a pointer pointing the first
// byte of the data and len is the length of the data.
void writeData(const char* data, int len, int timeout = 5) const;
// Reads up to len bytes from this socket.
// data is a pointer pointing the first
// byte of the data, which must be allocated before this method is called.
// len is the size of the allocated memory. When this method returns
// successfully, len is replaced by the size of the read data.
void readData(char* data, int& len, int timeout = 5) const;
// Reads up to len bytes from this socket, but bytes are not removed from
// this socket.
void peekData(char* data, int& len, int timeout = 5) const;
/**
* Makes this socket secure.
* If the system has not OpenSSL, then this method do nothing.
*/
void initiateSecureConnection() ;
};
#endif // _D_SOCKET_CORE_H_
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