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/* Copyright (C) 2002-2005 RealVNC Ltd. All Rights Reserved.
*
* This 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 software 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 software; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
* USA.
*/
// -=- TcpSocket.h - base-class for TCP stream sockets.
// This header also defines the TcpListener class, used
// to listen for incoming socket connections over TCP
//
// NB: Any file descriptors created by the TcpSocket or
// TcpListener classes are close-on-exec if the OS supports
// it. TcpSockets initialised with a caller-supplied fd
// are NOT set to close-on-exec.
#ifndef __NETWORK_TCP_SOCKET_H__
#define __NETWORK_TCP_SOCKET_H__
#include <network/Socket.h>
#ifdef WIN32
#include <winsock2.h>
#include <ws2tcpip.h>
#else
#include <sys/socket.h> /* for socklen_t */
#include <netinet/in.h> /* for struct sockaddr_in */
#endif
#include <list>
/* Tunnelling support. */
#define TUNNEL_PORT_OFFSET 5500
namespace network {
/* Tunnelling support. */
int findFreeTcpPort (void);
int getSockPort(int sock);
class TcpSocket : public Socket {
public:
TcpSocket(int sock);
TcpSocket(const char *name, int port);
virtual char* getPeerAddress();
virtual char* getPeerEndpoint();
protected:
bool enableNagles(bool enable);
};
class TcpListener : public SocketListener {
public:
TcpListener(const struct sockaddr *listenaddr, socklen_t listenaddrlen);
TcpListener(int sock);
virtual int getMyPort();
static void getMyAddresses(std::list<char*>* result);
protected:
virtual Socket* createSocket(int fd);
};
void createLocalTcpListeners(std::list<SocketListener*> *listeners,
int port);
void createTcpListeners(std::list<SocketListener*> *listeners,
const char *addr,
int port);
void createTcpListeners(std::list<SocketListener*> *listeners,
const struct addrinfo *ai);
typedef struct vnc_sockaddr {
union {
sockaddr sa;
sockaddr_in sin;
sockaddr_in6 sin6;
} u;
} vnc_sockaddr_t;
class TcpFilter : public ConnectionFilter {
public:
TcpFilter(const char* filter);
virtual ~TcpFilter();
virtual bool verifyConnection(Socket* s);
typedef enum {Accept, Reject, Query} Action;
struct Pattern {
Action action;
vnc_sockaddr_t address;
unsigned int prefixlen;
vnc_sockaddr_t mask; // computed from address and prefix
};
static Pattern parsePattern(const char* s);
static char* patternToStr(const Pattern& p);
protected:
std::list<Pattern> filter;
};
}
#endif // __NETWORK_TCP_SOCKET_H__
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