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/*
* active port forwarder - software for secure forwarding
* Copyright (C) 2003,2004,2005 jeremian <jeremian [at] poczta.fm>
*
* 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.
*
*/
#include <config.h>
#include "client_initialization.h"
#include "network.h"
int
initialize_client_stage1(char tunneltype, clifd* master, char* name, char* manage,
char* proxyname, char* proxyport, char ipfam, SSL_CTX* ctx, unsigned char* buff, unsigned char* pass,
char wanttoexit)
{
int n;
switch (tunneltype) {
case 0: {
if (ip_connect(&(master->commfd), name, manage, ipfam)) {
#ifdef AF_INET6
aflog(LOG_T_INIT, LOG_I_CRIT,
"tcp_connect_%s error for %s, %s",
(ipfam & 0x02)?"ipv4":(ipfam & 0x04)?"ipv6":"unspec", name, manage);
#else
aflog(LOG_T_INIT, LOG_I_CRIT,
"tcp_connect error for %s, %s", name, manage);
#endif
if (wanttoexit) {
exit(1);
}
else {
return 1;
}
}
break;
}
#ifdef HAVE_LIBPTHREAD
case 1: {
if (initialize_http_proxy_client(&(master->commfd), name, manage, proxyname, proxyport, ipfam)) {
#ifdef AF_INET6
aflog(LOG_T_INIT, LOG_I_CRIT,
"http_proxy_connect_%s error for %s, %s (proxy: %s, %s)",
(ipfam & 0x02)?"ipv4":(ipfam & 0x04)?"ipv6":"unspec", name, manage, proxyname, proxyport);
#else
aflog(LOG_T_INIT, LOG_I_CRIT,
"http_proxy_connect error for %s, %s (proxy: %s, %s)", name, manage, proxyname, proxyport);
#endif
if (wanttoexit) {
exit(1);
}
else {
return 1;
}
}
break;
}
#endif
default: {
aflog(LOG_T_INIT, LOG_I_CRIT,
"Unknown tunnel type");
if (wanttoexit) {
exit(1);
}
else {
return 1;
}
break;
}
}
master->ssl = SSL_new(ctx);
if (SSL_set_fd(master->ssl, master->commfd) != 1) {
aflog(LOG_T_INIT, LOG_I_CRIT,
"Problem with initializing ssl... exiting");
if (wanttoexit) {
exit(1);
}
else {
return 2;
}
}
aflog(LOG_T_INIT, LOG_I_INFO,
"Trying SSL_connect");
if ((n = SSL_connect(master->ssl)) == 1) {
aflog(LOG_T_INIT, LOG_I_INFO,
"SSL_connect successful");
}
else {
aflog(LOG_T_INIT, LOG_I_CRIT,
"SSL_connect has failed (%d)... exiting", n);
if (wanttoexit) {
exit(1);
}
else {
return 3;
}
}
buff[0] = AF_S_LOGIN;
buff[1] = pass[0];
buff[2] = pass[1];
buff[3] = pass[2];
buff[4] = pass[3];
return 0;
}
int
initialize_client_stage2(char *type, clifd* master, int* usernum, unsigned char* buff, char wanttoexit)
{
send_message(*type, *master, buff, 5);
buff[0] = 0;
get_message(*type, *master, buff, -5);
if ( buff[0] == 0 ) {
aflog(LOG_T_INIT, LOG_I_CRIT,
"Connection with afserver failed");
if (wanttoexit) {
exit(1);
}
else {
return 1;
}
}
if ( buff[0] == AF_S_WRONG ) {
aflog(LOG_T_INIT, LOG_I_ERR,
"Wrong password");
if (wanttoexit) {
exit(1);
}
else {
return 1;
}
}
if ( buff[0] == AF_S_CANT_OPEN ) {
aflog(LOG_T_INIT, LOG_I_ERR,
"Server is full");
if (wanttoexit) {
exit(1);
}
else {
return 1;
}
}
if ( buff[0] != AF_S_LOGIN ) {
aflog(LOG_T_INIT, LOG_I_ERR,
"Incompatible server type or server full");
if (wanttoexit) {
exit(1);
}
else {
return 1;
}
}
*type = buff[3];
(*usernum) = buff[1];
(*usernum) = (*usernum) << 8;
(*usernum) += buff[2];
return 0;
}
int
initialize_client_stage3(ConnectuserT** contable, clifd* master, int usernum, int* buflength, socklen_t* len,
fd_set* allset, fd_set* wset, int* maxfdp1, char wanttoexit)
{
(*contable) = calloc( usernum, sizeof(ConnectuserT));
if ((*contable) == NULL) {
aflog(LOG_T_INIT, LOG_I_CRIT,
"Calloc error - unable to successfully communicate with server");
if (wanttoexit) {
exit(1);
}
else {
return 1;
}
}
(*len) = 4;
if (getsockopt(master->commfd, SOL_SOCKET, SO_SNDBUF, buflength, len) == -1) {
aflog(LOG_T_INIT, LOG_I_CRIT,
"Can't get socket send buffer size - exiting...");
if (wanttoexit) {
exit(1);
}
else {
return 2;
}
}
FD_ZERO(allset);
FD_ZERO(wset);
FD_SET(master->commfd, allset);
(*maxfdp1) = master->commfd + 1;
return 0;
}
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