diff options
Diffstat (limited to 'src/client_initialization.c')
| -rw-r--r-- | src/client_initialization.c | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/src/client_initialization.c b/src/client_initialization.c new file mode 100644 index 0000000..a5ab560 --- /dev/null +++ b/src/client_initialization.c @@ -0,0 +1,212 @@ +/* + * 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; +} |