libgadu.c

Linux下的多协议即时通讯程序源代码

/* $Id: libgadu.c 16856 2006-08-19 01:13:25Z evands $ */

/*
 *  (C) Copyright 2001-2003 Wojtek Kaniewski <[e-mail]>
 *                          Robert J. Wo糿y <[e-mail]>
 *                          Arkadiusz Mi秌iewicz <[e-mail]>
 *                          Tomasz Chili駍ki <[e-mail]>
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU Lesser General Public License Version
 *  2.1 as published by the Free Software Foundation.
 *
 *  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 Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser 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.
 */

#include <sys/types.h>
#ifndef _WIN32
#include <sys/wait.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#ifdef sun
#  include <sys/filio.h>
#endif
#else
#include <io.h>
#include <fcntl.h>
#include <errno.h>
#define SHUT_RDWR SD_BOTH
#endif

#include "libgadu-config.h"

#include <errno.h>
#ifndef _WIN32
#include <netdb.h>
#endif
#ifdef __GG_LIBGADU_HAVE_PTHREAD
#  include <pthread.h>
#endif
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#ifdef __GG_LIBGADU_HAVE_OPENSSL
#  include <openssl/err.h>
#  include <openssl/rand.h>
#endif

#include "compat.h"
#include "libgadu.h"

int gg_debug_level = 0;
void (*gg_debug_handler)(int level, const char *format, va_list ap) = NULL;

int gg_dcc_port = 0;
unsigned long gg_dcc_ip = 0;

unsigned long gg_local_ip = 0;
/*
 * zmienne opisuj眂e parametry proxy http.
 */
char *gg_proxy_host = NULL;
int gg_proxy_port = 0;
int gg_proxy_enabled = 0;
int gg_proxy_http_only = 0;
char *gg_proxy_username = NULL;
char *gg_proxy_password = NULL;

#ifndef lint 
static char rcsid[]
#ifdef __GNUC__
__attribute__ ((unused))
#endif
= "$Id: libgadu.c 16856 2006-08-19 01:13:25Z evands $";
#endif 

#ifdef _WIN32
/**
 *  Deal with the fact that you can't select() on a win32 file fd.
 *  This makes it practically impossible to tie into purple's event loop.
 *
 *  -This is thanks to Tor Lillqvist.
 *  XXX - Move this to where the rest of the the win32 compatiblity stuff goes when we push the changes back to libgadu.
 */
static int
socket_pipe (int *fds)
{
	SOCKET temp, socket1 = -1, socket2 = -1;
	struct sockaddr_in saddr;
	int len;
	u_long arg;
	fd_set read_set, write_set;
	struct timeval tv;

	temp = socket(AF_INET, SOCK_STREAM, 0);

	if (temp == INVALID_SOCKET) {
		goto out0;
	}

	arg = 1;
	if (ioctlsocket(temp, FIONBIO, &arg) == SOCKET_ERROR) {
		goto out0;
	}

	memset(&saddr, 0, sizeof(saddr));
	saddr.sin_family = AF_INET;
	saddr.sin_port = 0;
	saddr.sin_addr.s_addr = htonl(INADDR_LOOPBACK);

	if (bind(temp, (struct sockaddr *)&saddr, sizeof (saddr))) {
		goto out0;
	}

	if (listen(temp, 1) == SOCKET_ERROR) {
		goto out0;
	}

	len = sizeof(saddr);
	if (getsockname(temp, (struct sockaddr *)&saddr, &len)) {
		goto out0;
	}

	socket1 = socket(AF_INET, SOCK_STREAM, 0);

	if (socket1 == INVALID_SOCKET) {
		goto out0;
	}

	arg = 1;
	if (ioctlsocket(socket1, FIONBIO, &arg) == SOCKET_ERROR) {
		goto out1;
	}

	if (connect(socket1, (struct sockaddr  *)&saddr, len) != SOCKET_ERROR ||
			WSAGetLastError() != WSAEWOULDBLOCK) {
		goto out1;
	}

	FD_ZERO(&read_set);
	FD_SET(temp, &read_set);

	tv.tv_sec = 0;
	tv.tv_usec = 0;

	if (select(0, &read_set, NULL, NULL, NULL) == SOCKET_ERROR) {
		goto out1;
	}

	if (!FD_ISSET(temp, &read_set)) {
		goto out1;
	}

	socket2 = accept(temp, (struct sockaddr *) &saddr, &len);
	if (socket2 == INVALID_SOCKET) {
		goto out1;
	}

	FD_ZERO(&write_set);
	FD_SET(socket1, &write_set);

	tv.tv_sec = 0;
	tv.tv_usec = 0;

	if (select(0, NULL, &write_set, NULL, NULL) == SOCKET_ERROR) {
		goto out2;
	}

	if (!FD_ISSET(socket1, &write_set)) {
		goto out2;
	}

	arg = 0;
	if (ioctlsocket(socket1, FIONBIO, &arg) == SOCKET_ERROR) {
		goto out2;
	}

	arg = 0;
	if (ioctlsocket(socket2, FIONBIO, &arg) == SOCKET_ERROR) {
		goto out2;
	}

	fds[0] = socket1;
	fds[1] = socket2;

	closesocket (temp);

	return 0;

out2:
	closesocket (socket2);
out1:
	closesocket (socket1);
out0:
	closesocket (temp);
	errno = EIO;            /* XXX */

	return -1;
}
#endif

/*
 * gg_libgadu_version()
 *
 * zwraca wersj