| 1 |
/*
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* Copyright (C) 1999,2000 Ross Combs (rocombs@cs.nmsu.edu)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
|
| 10 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
| 11 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
|
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include "common/setup_before.h"
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#include <stdio.h>
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#ifdef HAVE_STDDEF_H
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# include <stddef.h>
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#else
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# ifndef NULL
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# define NULL ((void *)0)
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# endif
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#endif
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| 27 |
#ifdef STDC_HEADERS
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| 28 |
# include <stdlib.h>
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| 29 |
#endif
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#include "compat/exitstatus.h"
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| 31 |
#ifdef HAVE_UNISTD_H
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# include <unistd.h>
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| 33 |
#endif
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#include "compat/stdfileno.h"
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| 35 |
#ifdef HAVE_FCNTL_H
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# include <fcntl.h>
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#else
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# ifdef HAVE_SYS_FILE_H
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# include <sys/file.h>
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| 40 |
# endif
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#endif
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| 42 |
#ifdef HAVE_STRING_H
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| 43 |
# include <string.h>
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| 44 |
#else
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# ifdef HAVE_STRINGS_H
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# include <strings.h>
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| 47 |
# endif
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#endif
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#ifdef HAVE_MEMORY_H
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| 50 |
# include <memory.h>
|
| 51 |
#endif
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#include "compat/memset.h"
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| 53 |
#include "compat/memcpy.h"
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| 54 |
#include <ctype.h>
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| 55 |
#include <errno.h>
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| 56 |
#include "compat/strerror.h"
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| 57 |
#ifdef TIME_WITH_SYS_TIME
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# include <sys/time.h>
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# include <time.h>
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| 60 |
#else
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| 61 |
# ifdef HAVE_SYS_TIME_H
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# include <sys/time.h>
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# else
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# include <time.h>
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# endif
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#endif
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#ifdef HAVE_SYS_TYPES_H
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# include <sys/types.h>
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#endif
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#ifdef HAVE_SYS_SELECT_H
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# include <sys/select.h>
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| 72 |
#endif
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#ifdef HAVE_SYS_SOCKET_H
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# include <sys/socket.h>
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| 75 |
#endif
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| 76 |
#include "compat/socket.h"
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#include "compat/recv.h"
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#ifdef HAVE_SYS_PARAM_H
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# include <sys/param.h>
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#endif
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#ifdef HAVE_NETINET_IN_H
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# include <netinet/in.h>
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#endif
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#include "compat/netinet_in.h"
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#ifdef HAVE_ARPA_INET_H
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# include <arpa/inet.h>
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#endif
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#include "compat/inet_ntoa.h"
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#ifdef HAVE_NETDB_H
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# include <netdb.h>
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#endif
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#include "compat/psock.h"
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#include "common/packet.h"
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#include "common/init_protocol.h"
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#include "common/hexdump.h"
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#include "common/eventlog.h"
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#include "common/bn_type.h"
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#include "common/queue.h"
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#include "common/network.h"
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#include "common/list.h"
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#include "common/util.h"
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#include "virtconn.h"
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#include "common/version.h"
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#include "common/setup_after.h"
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FILE * hexstrm=NULL;
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/* FIXME: This code is horribly unreadable. The UDP stuff is a hack for now. */
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#define PROXY_FLAG_UDP 1
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static int init_virtconn(t_virtconn * vc, struct sockaddr_in servaddr);
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static int proxy_process(unsigned short server_listen_port, struct sockaddr_in servaddr);
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static void usage(char const * progname);
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static int init_virtconn(t_virtconn * vc, struct sockaddr_in servaddr)
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{
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int addlen;
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char connect_type;
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/* determine connection type by first character sent by client */
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addlen = psock_recv(virtconn_get_client_socket(vc),&connect_type,sizeof(char),0);
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if (addlen<0 && (psock_errno()==PSOCK_EINTR || psock_errno()==PSOCK_EAGAIN || psock_errno()==PSOCK_EWOULDBLOCK))
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return 0;
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/* error occurred or connection lost */
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if (addlen<1)
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{
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eventlog(eventlog_level_error,__FUNCTION__,"[%d] could not get virtconn class (closing connection) (psock_recv: %s)",virtconn_get_client_socket(vc),pstrerror(psock_errno()));
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return -1;
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}
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switch (connect_type)
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{
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case CLIENT_INITCONN_CLASS_BNET:
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eventlog(eventlog_level_info,__FUNCTION__,"[%d] client initiated normal connection",virtconn_get_client_socket(vc));
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virtconn_set_class(vc,virtconn_class_bnet);
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break;
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case CLIENT_INITCONN_CLASS_FILE:
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eventlog(eventlog_level_info,__FUNCTION__,"[%d] client initiated file download connection",virtconn_get_client_socket(vc));
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virtconn_set_class(vc,virtconn_class_file);
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break;
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case CLIENT_INITCONN_CLASS_BOT:
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eventlog(eventlog_level_info,__FUNCTION__,"[%d] client initiated chat bot connection",virtconn_get_client_socket(vc));
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virtconn_set_class(vc,virtconn_class_bot);
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break;
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default:
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eventlog(eventlog_level_error,__FUNCTION__,"[%d] client initiated unknown connection type 0x%02hx (length %d) (closing connection)",virtconn_get_client_socket(vc),(unsigned short)connect_type,addlen);
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return -1;
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}
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/* now connect to the real server */
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if (psock_connect(virtconn_get_server_socket(vc),(struct sockaddr *)&servaddr,(psock_t_socklen)sizeof(servaddr))<0)
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{
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if (psock_errno()!=PSOCK_EINPROGRESS)
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{
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eventlog(eventlog_level_error,__FUNCTION__,"[%d] could not connect to server (psock_connect: %s)\n",virtconn_get_client_socket(vc),pstrerror(psock_errno()));
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return -1;
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}
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virtconn_set_state(vc,virtconn_state_connecting);
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}
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else
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virtconn_set_state(vc,virtconn_state_connected);
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| 173 |
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{
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t_packet * packet;
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| 176 |
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if (!(packet = packet_create(packet_class_raw)))
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| 178 |
{
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eventlog(eventlog_level_error,__FUNCTION__,"[%d] could not create packet",virtconn_get_client_socket(vc));
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return -1;
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}
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packet_append_data(packet,&connect_type,1);
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queue_push_packet(virtconn_get_serverout_queue(vc),packet);
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packet_del_ref(packet);
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}
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return 0;
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}
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| 190 |
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static int proxy_process(unsigned short server_listen_port, struct sockaddr_in servaddr)
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{
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| 193 |
int lsock;
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struct sockaddr_in laddr;
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t_psock_fd_set rfds, wfds;
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int highest_fd;
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int udpsock;
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t_virtconn * vc;
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t_elem const * curr;
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int csocket;
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int ssocket;
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if ((udpsock = psock_socket(PSOCK_PF_INET,PSOCK_SOCK_DGRAM,PSOCK_IPPROTO_UDP))<0)
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{
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eventlog(eventlog_level_error,__FUNCTION__,"could not create UDP socket (psock_socket: %s)",pstrerror(psock_errno()));
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return -1;
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}
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if (psock_ctl(udpsock,PSOCK_NONBLOCK)<0)
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eventlog(eventlog_level_error,__FUNCTION__,"could not set UDP listen socket to non-blocking mode (psock_ctl: %s)",pstrerror(psock_errno()));
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if ((lsock = psock_socket(PSOCK_PF_INET,PSOCK_SOCK_STREAM,PSOCK_IPPROTO_TCP))<0)
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{
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eventlog(eventlog_level_error,__FUNCTION__,"could not create listening socket (psock_socket: %s)",pstrerror(psock_errno()));
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psock_close(udpsock);
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return -1;
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}
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{
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int val=1;
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if (psock_setsockopt(lsock,PSOCK_SOL_SOCKET,PSOCK_SO_REUSEADDR,&val,(psock_t_socklen)sizeof(int))<0)
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eventlog(eventlog_level_error,__FUNCTION__,"[%d] could not set socket option SO_REUSEADDR (psock_setsockopt: %s)",lsock,pstrerror(psock_errno()));
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/* not a fatal error... */
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}
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memset(&laddr,0,sizeof(laddr));
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laddr.sin_family = PSOCK_AF_INET;
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laddr.sin_port = htons(server_listen_port);
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laddr.sin_addr.s_addr = htonl(INADDR_ANY);
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if (psock_bind(lsock,(struct sockaddr *)&laddr,(psock_t_socklen)sizeof(laddr))<0)
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{
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eventlog(eventlog_level_error,__FUNCTION__,"could not bind socket to address 0.0.0.0:%hu TCP (psock_bind: %s)",server_listen_port,pstrerror(psock_errno()));
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psock_close(udpsock);
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psock_close(lsock);
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return -1;
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}
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memset(&laddr,0,sizeof(laddr));
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laddr.sin_family = PSOCK_AF_INET;
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laddr.sin_port = htons(server_listen_port);
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laddr.sin_addr.s_addr = htonl(INADDR_ANY);
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if (psock_bind(udpsock,(struct sockaddr *)&laddr,(psock_t_socklen)sizeof(laddr))<0)
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| 243 |
{
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| 244 |
eventlog(eventlog_level_error,__FUNCTION__,"could not bind socket to address 0.0.0.0:%hu UDP (psock_bind: %s)",server_listen_port,pstrerror(psock_errno()));
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| 245 |
psock_close(udpsock);
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| 246 |
psock_close(lsock);
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| 247 |
return -1;
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| 248 |
}
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| 249 |
eventlog(eventlog_level_info,__FUNCTION__,"bound to UDP port %hu",server_listen_port);
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| 250 |
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| 251 |
/* tell socket to listen for connections */
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| 252 |
if (psock_listen(lsock,LISTEN_QUEUE)<0)
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| 253 |
{
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| 254 |
eventlog(eventlog_level_error,__FUNCTION__,"could not listen (psock_listen: %s)",pstrerror(psock_errno()));
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| 255 |
psock_close(udpsock);
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| 256 |
psock_close(lsock);
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| 257 |
return -1;
|
| 258 |
}
|
| 259 |
if (psock_ctl(lsock,PSOCK_NONBLOCK)<0)
|
| 260 |
eventlog(eventlog_level_error,__FUNCTION__,"could not set TCP listen socket to non-blocking mode (psock_ctl: %s)",pstrerror(psock_errno()));
|
| 261 |
|
| 262 |
eventlog(eventlog_level_info,__FUNCTION__,"listening on TCP port %hu",server_listen_port);
|
| 263 |
|
| 264 |
for (;;)
|
| 265 |
{
|
| 266 |
/* loop over all connections to create the sets for select() */
|
| 267 |
PSOCK_FD_ZERO(&rfds);
|
| 268 |
PSOCK_FD_ZERO(&wfds);
|
| 269 |
highest_fd = lsock;
|
| 270 |
PSOCK_FD_SET(lsock,&rfds);
|
| 271 |
if (udpsock>highest_fd)
|
| 272 |
highest_fd = udpsock;
|
| 273 |
PSOCK_FD_SET(udpsock,&rfds);
|
| 274 |
|
| 275 |
LIST_TRAVERSE_CONST(virtconnlist(),curr)
|
| 276 |
{
|
| 277 |
vc = elem_get_data(curr);
|
| 278 |
csocket = virtconn_get_client_socket(vc);
|
| 279 |
if (queue_get_length((t_queue const * const *)virtconn_get_clientout_queue(vc))>0)
|
| 280 |
PSOCK_FD_SET(csocket,&wfds); /* pending output, also check for writeability */
|
| 281 |
PSOCK_FD_SET(csocket,&rfds);
|
| 282 |
|
| 283 |
if (csocket>highest_fd)
|
| 284 |
highest_fd = csocket;
|
| 285 |
|
| 286 |
switch (virtconn_get_state(vc))
|
| 287 |
{
|
| 288 |
case virtconn_state_connecting:
|
| 289 |
eventlog(eventlog_level_debug,__FUNCTION__,"waiting for %d to finish connecting",ssocket);
|
| 290 |
ssocket = virtconn_get_server_socket(vc);
|
| 291 |
PSOCK_FD_SET(ssocket,&wfds); /* wait for connect to complete */
|
| 292 |
|
| 293 |
if (ssocket>highest_fd)
|
| 294 |
highest_fd = ssocket;
|
| 295 |
break;
|
| 296 |
case virtconn_state_connected:
|
| 297 |
eventlog(eventlog_level_debug,__FUNCTION__,"checking for reading on connected socket %d",ssocket);
|
| 298 |
ssocket = virtconn_get_server_socket(vc);
|
| 299 |
if (queue_get_length((t_queue const * const *)virtconn_get_serverout_queue(vc))>0)
|
| 300 |
PSOCK_FD_SET(ssocket,&wfds); /* pending output, also check for writeability */
|
| 301 |
PSOCK_FD_SET(ssocket,&rfds);
|
| 302 |
|
| 303 |
if (ssocket>highest_fd)
|
| 304 |
highest_fd = ssocket;
|
| 305 |
break;
|
| 306 |
default: /* avoid warning */
|
| 307 |
break;
|
| 308 |
}
|
| 309 |
}
|
| 310 |
|
| 311 |
/* find which sockets need servicing */
|
| 312 |
if (psock_select(highest_fd+1,&rfds,&wfds,NULL,NULL)<0)
|
| 313 |
{
|
| 314 |
if (errno!=PSOCK_EINTR)
|
| 315 |
eventlog(eventlog_level_error,__FUNCTION__,"select failed (select: %s)",pstrerror(errno));
|
| 316 |
continue;
|
| 317 |
}
|
| 318 |
|
| 319 |
/* check for incoming connection */
|
| 320 |
if (PSOCK_FD_ISSET(lsock,&rfds))
|
| 321 |
{
|
| 322 |
int asock;
|
| 323 |
struct sockaddr_in caddr;
|
| 324 |
psock_t_socklen caddr_len;
|
| 325 |
|
| 326 |
/* accept the connection */
|
| 327 |
caddr_len = sizeof(caddr);
|
| 328 |
if ((asock = psock_accept(lsock,(struct sockaddr *)&caddr,&caddr_len))<0)
|
| 329 |
{
|
| 330 |
if (psock_errno()==PSOCK_EWOULDBLOCK || psock_errno()==PSOCK_ECONNABORTED) /* BSD, POSIX error for aborted connections, SYSV often uses EAGAIN */
|
| 331 |
eventlog(eventlog_level_error,__FUNCTION__,"client aborted connection (psock_accept: %s)",pstrerror(psock_errno()));
|
| 332 |
else /* EAGAIN can mean out of resources _or_ connection aborted */
|
| 333 |
if (psock_errno()!=PSOCK_EINTR)
|
| 334 |
eventlog(eventlog_level_error,__FUNCTION__,"could not accept new connection (psock_accept: %s)",pstrerror(psock_errno()));
|
| 335 |
}
|
| 336 |
else
|
| 337 |
{
|
| 338 |
int ssd;
|
| 339 |
int val=1;
|
| 340 |
|
| 341 |
eventlog(eventlog_level_info,__FUNCTION__,"[%d] accepted connection from %s:%hu",asock,inet_ntoa(caddr.sin_addr),ntohs(caddr.sin_port));
|
| 342 |
|
| 343 |
if (psock_setsockopt(asock,PSOCK_SOL_SOCKET,PSOCK_SO_KEEPALIVE,&val,(psock_t_socklen)sizeof(val))<0)
|
| 344 |
eventlog(eventlog_level_error,__FUNCTION__,"[%d] could not set socket option SO_KEEPALIVE (psock_setsockopt: %s)",asock,pstrerror(psock_errno()));
|
| 345 |
/* not a fatal error */
|
| 346 |
|
| 347 |
if (psock_ctl(asock,PSOCK_NONBLOCK)<0)
|
| 348 |
{
|
| 349 |
eventlog(eventlog_level_error,__FUNCTION__,"[%d] could not set TCP socket to non-blocking mode (closing connection) (psock_ctl: %s)",asock,pstrerror(psock_errno()));
|
| 350 |
psock_close(asock);
|
| 351 |
}
|
| 352 |
else
|
| 353 |
if ((ssd = psock_socket(PSOCK_PF_INET,PSOCK_SOCK_STREAM,PSOCK_IPPROTO_TCP))<0)
|
| 354 |
{
|
| 355 |
eventlog(eventlog_level_error,__FUNCTION__,"[%d] could create TCP socket (closing connection) (psock_socket: %s)",asock,pstrerror(psock_errno()));
|
| 356 |
psock_close(asock);
|
| 357 |
}
|
| 358 |
else
|
| 359 |
if (psock_ctl(ssd,PSOCK_NONBLOCK)<0)
|
| 360 |
{
|
| 361 |
eventlog(eventlog_level_error,__FUNCTION__,"[%d] could not set TCP socket to non-blocking mode (closing connection) (psock_ctl: %s)",asock,pstrerror(psock_errno()));
|
| 362 |
psock_close(ssd);
|
| 363 |
psock_close(asock);
|
| 364 |
}
|
| 365 |
else
|
| 366 |
if (!(vc = virtconn_create(asock,ssd,ntohl(caddr.sin_addr.s_addr),BNETD_MIN_TEST_PORT)))
|
| 367 |
{
|
| 368 |
eventlog(eventlog_level_error,__FUNCTION__,"[%d] unable to create new connection (closing connection)",asock);
|
| 369 |
psock_close(ssd);
|
| 370 |
psock_close(asock);
|
| 371 |
}
|
| 372 |
else
|
| 373 |
{
|
| 374 |
memset(&caddr,0,sizeof(caddr));
|
| 375 |
caddr.sin_family = PSOCK_AF_INET;
|
| 376 |
caddr.sin_port = htons(virtconn_get_udpport(vc));
|
| 377 |
caddr.sin_addr.s_addr = htonl(virtconn_get_udpaddr(vc));
|
| 378 |
eventlog(eventlog_level_info,__FUNCTION__,"[%d] addr now %s:%hu",asock,inet_ntoa(caddr.sin_addr),ntohs(caddr.sin_port));
|
| 379 |
}
|
| 380 |
}
|
| 381 |
}
|
| 382 |
|
| 383 |
eventlog(eventlog_level_debug,__FUNCTION__,"checking for incoming UDP");
|
| 384 |
if (PSOCK_FD_ISSET(udpsock,&rfds))
|
| 385 |
{
|
| 386 |
t_packet * upacket;
|
| 387 |
struct sockaddr_in toaddr;
|
| 388 |
struct sockaddr_in fromaddr;
|
| 389 |
psock_t_socklen fromlen;
|
| 390 |
int len;
|
| 391 |
|
| 392 |
if (!(upacket = packet_create(packet_class_raw)))
|
| 393 |
eventlog(eventlog_level_error,__FUNCTION__,"could not allocate raw packet for input");
|
| 394 |
else
|
| 395 |
{
|
| 396 |
/* packet_set_flags(upacket,PROXY_FLAG_UDP);*/
|
| 397 |
|
| 398 |
fromlen = sizeof(fromaddr);
|
| 399 |
if ((len = psock_recvfrom(udpsock,packet_get_raw_data_build(upacket,0),MAX_PACKET_SIZE,0,(struct sockaddr *)&fromaddr,&fromlen))<0)
|
| 400 |
{
|
| 401 |
if (psock_errno()!=PSOCK_EINTR && psock_errno()!=PSOCK_EAGAIN && psock_errno()!=PSOCK_EWOULDBLOCK)
|
| 402 |
eventlog(eventlog_level_error,__FUNCTION__,"could not recv UDP datagram (psock_recvfrom: %s)",pstrerror(psock_errno()));
|
| 403 |
}
|
| 404 |
else
|
| 405 |
{
|
| 406 |
if (fromaddr.sin_family!=PSOCK_AF_INET)
|
| 407 |
eventlog(eventlog_level_error,__FUNCTION__,"got UDP datagram with bad address family %d",fromaddr.sin_family);
|
| 408 |
else
|
| 409 |
{
|
| 410 |
char tempa[32];
|
| 411 |
char tempb[32];
|
| 412 |
|
| 413 |
packet_set_size(upacket,len);
|
| 414 |
|
| 415 |
if (fromaddr.sin_addr.s_addr==servaddr.sin_addr.s_addr) /* from server */
|
| 416 |
{
|
| 417 |
if ((curr = list_get_first_const(virtconnlist()))) /* hack.. find proper client */
|
| 418 |
{
|
| 419 |
vc = elem_get_data(curr);
|
| 420 |
memset(&toaddr,0,sizeof(toaddr));
|
| 421 |
toaddr.sin_family = PSOCK_AF_INET;
|
| 422 |
toaddr.sin_port = htons(virtconn_get_udpport(vc));
|
| 423 |
toaddr.sin_addr.s_addr = htonl(virtconn_get_udpaddr(vc));
|
| 424 |
eventlog(eventlog_level_info,__FUNCTION__,"[%d] addr by UDP send is %s:%hu",virtconn_get_client_socket(vc),inet_ntoa(toaddr.sin_addr),ntohs(toaddr.sin_port));
|
| 425 |
|
| 426 |
if (hexstrm)
|
| 427 |
{
|
| 428 |
strcpy(tempa,inet_ntoa(fromaddr.sin_addr));
|
| 429 |
strcpy(tempb,inet_ntoa(toaddr.sin_addr));
|
| 430 |
fprintf(hexstrm,"%d: srv prot=UDP from=%s:%hu to=%s:%hu length=%d\n",
|
| 431 |
udpsock,
|
| 432 |
tempa,
|
| 433 |
ntohs(fromaddr.sin_port),
|
| 434 |
tempb,
|
| 435 |
ntohs(toaddr.sin_port),
|
| 436 |
len);
|
| 437 |
hexdump(hexstrm,packet_get_raw_data(upacket,0),len);
|
| 438 |
}
|
| 439 |
|
| 440 |
/*queue_push_packet(virtconn_get_clientout_queue(__));*/ /* where to queue ... */
|
| 441 |
for (;;) /* hack.. just block for now */
|
| 442 |
{
|
| 443 |
if (psock_sendto(udpsock,packet_get_raw_data_const(upacket,0),len,0,
|
| 444 |
(struct sockaddr *)&toaddr,(psock_t_socklen)sizeof(toaddr))<len)
|
| 445 |
{
|
| 446 |
if (psock_errno()==PSOCK_EINTR || psock_errno()==PSOCK_EAGAIN || psock_errno()==PSOCK_EWOULDBLOCK)
|
| 447 |
continue;
|
| 448 |
eventlog(eventlog_level_error,__FUNCTION__,"could not send UDP datagram to client (psock_sendto: %s)",pstrerror(psock_errno()));
|
| 449 |
}
|
| 450 |
break;
|
| 451 |
}
|
| 452 |
}
|
| 453 |
}
|
| 454 |
else /* from client */
|
| 455 |
{
|
| 456 |
if (hexstrm)
|
| 457 |
{
|
| 458 |
strcpy(tempa,inet_ntoa(fromaddr.sin_addr));
|
| 459 |
strcpy(tempb,inet_ntoa(servaddr.sin_addr));
|
| 460 |
|
| 461 |
fprintf(hexstrm,"%d: clt prot=UDP from=%s:%hu to=%s:%hu length=%d\n",
|
| 462 |
udpsock,
|
| 463 |
tempa,
|
| 464 |
ntohs(fromaddr.sin_port),
|
| 465 |
tempb,
|
| 466 |
ntohs(servaddr.sin_port),
|
| 467 |
len);
|
| 468 |
hexdump(hexstrm,packet_get_raw_data(upacket,0),len);
|
| 469 |
}
|
| 470 |
/*queue_push_packet(virtconn_get_serverout_queue(vc));*/
|
| 471 |
for (;;) /* hack.. just block for now */
|
| 472 |
{
|
| 473 |
if (psock_sendto(udpsock,packet_get_raw_data_const(upacket,0),len,0,
|
| 474 |
(struct sockaddr *)&servaddr,(psock_t_socklen)sizeof(servaddr))<len)
|
| 475 |
{
|
| 476 |
if (psock_errno()==PSOCK_EINTR || psock_errno()==PSOCK_EAGAIN || psock_errno()==PSOCK_EWOULDBLOCK)
|
| 477 |
continue;
|
| 478 |
eventlog(eventlog_level_error,__FUNCTION__,"could not send UDP datagram to server (psock_sendto: %s)",pstrerror(psock_errno()));
|
| 479 |
}
|
| 480 |
break;
|
| 481 |
}
|
| 482 |
}
|
| 483 |
}
|
| 484 |
}
|
| 485 |
packet_del_ref(upacket);
|
| 486 |
}
|
| 487 |
}
|
| 488 |
|
| 489 |
/* search connections for sockets that need service */
|
| 490 |
eventlog(eventlog_level_debug,__FUNCTION__,"checking for sockets that need service");
|
| 491 |
LIST_TRAVERSE_CONST(virtconnlist(),curr)
|
| 492 |
{
|
| 493 |
unsigned int currsize;
|
| 494 |
t_packet * packet;
|
| 495 |
|
| 496 |
vc = elem_get_data(curr);
|
| 497 |
|
| 498 |
csocket = virtconn_get_client_socket(vc);
|
| 499 |
if (virtconn_get_state(vc)==virtconn_state_connected ||
|
| 500 |
virtconn_get_state(vc)==virtconn_state_connecting)
|
| 501 |
ssocket = virtconn_get_server_socket(vc);
|
| 502 |
else
|
| 503 |
ssocket = -1;
|
| 504 |
|
| 505 |
eventlog(eventlog_level_debug,__FUNCTION__,"checking %d for client readability",csocket);
|
| 506 |
if (PSOCK_FD_ISSET(csocket,&rfds))
|
| 507 |
{
|
| 508 |
if (virtconn_get_state(vc)==virtconn_state_initial)
|
| 509 |
{
|
| 510 |
if (init_virtconn(vc,servaddr)<0)
|
| 511 |
{
|
| 512 |
virtconn_destroy(vc);
|
| 513 |
continue;
|
| 514 |
}
|
| 515 |
}
|
| 516 |
else
|
| 517 |
{
|
| 518 |
currsize = virtconn_get_clientin_size(vc);
|
| 519 |
|
| 520 |
if (!queue_get_length(virtconn_get_clientin_queue(vc)))
|
| 521 |
{
|
| 522 |
switch (virtconn_get_class(vc))
|
| 523 |
{
|
| 524 |
case virtconn_class_bnet:
|
| 525 |
if (!(packet = packet_create(packet_class_bnet)))
|
| 526 |
{
|
| 527 |
eventlog(eventlog_level_error,__FUNCTION__,"could not allocate normal packet for input");
|
| 528 |
continue;
|
| 529 |
}
|
| 530 |
break;
|
| 531 |
case virtconn_class_file:
|
| 532 |
if (!(packet = packet_create(packet_class_file)))
|
| 533 |
{
|
| 534 |
eventlog(eventlog_level_error,__FUNCTION__,"could not allocate file packet for input");
|
| 535 |
continue;
|
| 536 |
}
|
| 537 |
break;
|
| 538 |
case virtconn_class_bot:
|
| 539 |
if (!(packet = packet_create(packet_class_raw)))
|
| 540 |
{
|
| 541 |
eventlog(eventlog_level_error,__FUNCTION__,"could not allocate raw packet for input");
|
| 542 |
continue;
|
| 543 |
}
|
| 544 |
packet_set_size(packet,1); /* start by only reading one char */
|
| 545 |
break;
|
| 546 |
default:
|
| 547 |
eventlog(eventlog_level_error,__FUNCTION__,"[%d] connection has bad type (closing connection)",virtconn_get_client_socket(vc));
|
| 548 |
virtconn_destroy(vc);
|
| 549 |
continue;
|
| 550 |
}
|
| 551 |
queue_push_packet(virtconn_get_clientin_queue(vc),packet);
|
| 552 |
packet_del_ref(packet);
|
| 553 |
if (!queue_get_length(virtconn_get_clientin_queue(vc)))
|
| 554 |
continue; /* push failed */
|
| 555 |
currsize = 0;
|
| 556 |
}
|
| 557 |
|
| 558 |
packet = queue_peek_packet((t_queue const * const *)virtconn_get_clientin_queue(vc)); /* avoid warning */
|
| 559 |
switch (net_recv_packet(csocket,packet,&currsize))
|
| 560 |
{
|
| 561 |
case -1:
|
| 562 |
virtconn_destroy(vc);
|
| 563 |
continue;
|
| 564 |
|
| 565 |
case 0: /* still working on it */
|
| 566 |
virtconn_set_clientin_size(vc,currsize);
|
| 567 |
break;
|
| 568 |
|
| 569 |
case 1: /* done reading */
|
| 570 |
if (virtconn_get_class(vc)==virtconn_class_bot &&
|
| 571 |
currsize<MAX_PACKET_SIZE)
|
| 572 |
{
|
| 573 |
char const * const temp=packet_get_raw_data_const(packet,0);
|
| 574 |
|
| 575 |
if (temp[currsize-1]!='\r' && temp[currsize-1]!='\n')
|
| 576 |
{
|
| 577 |
virtconn_set_clientin_size(vc,currsize);
|
| 578 |
packet_set_size(packet,currsize+1);
|
| 579 |
break; /* no end of line, get another char */
|
| 580 |
}
|
| 581 |
/* got a complete line... fall through */
|
| 582 |
}
|
| 583 |
|
| 584 |
packet = queue_pull_packet(virtconn_get_clientin_queue(vc));
|
| 585 |
|
| 586 |
if (hexstrm)
|
| 587 |
{
|
| 588 |
fprintf(hexstrm,"%d: cli class=%s[0x%04hx] type=%s[0x%04hx] length=%hu\n",
|
| 589 |
csocket,
|
| 590 |
packet_get_class_str(packet),packet_get_class(packet),
|
| 591 |
packet_get_type_str(packet,packet_dir_from_client),packet_get_type(packet),
|
| 592 |
packet_get_size(packet));
|
| 593 |
hexdump(hexstrm,packet_get_raw_data_const(packet,0),packet_get_size(packet));
|
| 594 |
}
|
| 595 |
|
| 596 |
queue_push_packet(virtconn_get_serverout_queue(vc),packet);
|
| 597 |
packet_del_ref(packet);
|
| 598 |
virtconn_set_clientin_size(vc,0);
|
| 599 |
}
|
| 600 |
}
|
| 601 |
}
|
| 602 |
|
| 603 |
eventlog(eventlog_level_debug,__FUNCTION__,"checking %d for server readability",ssocket);
|
| 604 |
if (ssocket!=-1 && PSOCK_FD_ISSET(ssocket,&rfds))
|
| 605 |
{
|
| 606 |
currsize = virtconn_get_serverin_size(vc);
|
| 607 |
|
| 608 |
if (!queue_get_length(virtconn_get_serverin_queue(vc)))
|
| 609 |
{
|
| 610 |
switch (virtconn_get_class(vc))
|
| 611 |
{
|
| 612 |
case virtconn_class_bnet:
|
| 613 |
if (!(packet = packet_create(packet_class_bnet)))
|
| 614 |
{
|
| 615 |
eventlog(eventlog_level_error,__FUNCTION__,"could not allocate normal packet for input");
|
| 616 |
continue;
|
| 617 |
}
|
| 618 |
break;
|
| 619 |
case virtconn_class_file:
|
| 620 |
{
|
| 621 |
unsigned int fileleft;
|
| 622 |
|
| 623 |
if ((fileleft = virtconn_get_fileleft(vc))>0)
|
| 624 |
{
|
| 625 |
if (!(packet = packet_create(packet_class_raw)))
|
| 626 |
{
|
| 627 |
eventlog(eventlog_level_error,__FUNCTION__,"could not allocate raw file packet for input");
|
| 628 |
continue;
|
| 629 |
}
|
| 630 |
if (fileleft>MAX_PACKET_SIZE)
|
| 631 |
packet_set_size(packet,MAX_PACKET_SIZE);
|
| 632 |
else
|
| 633 |
packet_set_size(packet,fileleft);
|
| 634 |
}
|
| 635 |
else
|
| 636 |
{
|
| 637 |
if (!(packet = packet_create(packet_class_file)))
|
| 638 |
{
|
| 639 |
eventlog(eventlog_level_error,__FUNCTION__,"could not allocate file packet for input");
|
| 640 |
continue;
|
| 641 |
}
|
| 642 |
}
|
| 643 |
}
|
| 644 |
break;
|
| 645 |
case virtconn_class_bot:
|
| 646 |
if (!(packet = packet_create(packet_class_raw)))
|
| 647 |
{
|
| 648 |
eventlog(eventlog_level_error,__FUNCTION__,"could not allocate raw packet for input");
|
| 649 |
continue;
|
| 650 |
}
|
| 651 |
packet_set_size(packet,MAX_PACKET_SIZE); /* read as much as possible */
|
| 652 |
break;
|
| 653 |
default:
|
| 654 |
eventlog(eventlog_level_error,__FUNCTION__,"[%d] connection has bad type (closing connection)",virtconn_get_client_socket(vc));
|
| 655 |
virtconn_destroy(vc);
|
| 656 |
continue;
|
| 657 |
}
|
| 658 |
queue_push_packet(virtconn_get_serverin_queue(vc),packet);
|
| 659 |
packet_del_ref(packet);
|
| 660 |
if (!queue_get_length(virtconn_get_serverin_queue(vc)))
|
| 661 |
continue; /* push failed */
|
| 662 |
currsize = 0;
|
| 663 |
}
|
| 664 |
|
| 665 |
packet = queue_peek_packet((t_queue const * const *)virtconn_get_serverin_queue(vc)); /* avoid warning */
|
| 666 |
switch (net_recv_packet(ssocket,packet,&currsize))
|
| 667 |
{
|
| 668 |
case -1:
|
| 669 |
virtconn_destroy(vc);
|
| 670 |
continue;
|
| 671 |
|
| 672 |
case 0: /* still working on it */
|
| 673 |
virtconn_set_serverin_size(vc,currsize);
|
| 674 |
if (virtconn_get_class(vc)!=virtconn_class_bot || currsize<1)
|
| 675 |
break;
|
| 676 |
else
|
| 677 |
packet_set_size(packet,currsize);
|
| 678 |
/* fallthough... we take what we can get with the bot data */
|
| 679 |
|
| 680 |
case 1: /* done reading */
|
| 681 |
packet = queue_pull_packet(virtconn_get_serverin_queue(vc));
|
| 682 |
if (virtconn_get_class(vc)==virtconn_class_file)
|
| 683 |
{
|
| 684 |
unsigned int len=virtconn_get_fileleft(vc);
|
| 685 |
|
| 686 |
if (len)
|
| 687 |
virtconn_set_fileleft(vc,len-currsize);
|
| 688 |
else if (packet_get_type(packet)==SERVER_FILE_REPLY &&
|
| 689 |
packet_get_size(packet)>=sizeof(t_server_file_reply))
|
| 690 |
virtconn_set_fileleft(vc,bn_int_get(packet->u.server_file_reply.filelen));
|
| 691 |
}
|
| 692 |
queue_push_packet(virtconn_get_clientout_queue(vc),packet);
|
| 693 |
packet_del_ref(packet);
|
| 694 |
virtconn_set_serverin_size(vc,0);
|
| 695 |
}
|
| 696 |
}
|
| 697 |
|
| 698 |
eventlog(eventlog_level_debug,__FUNCTION__,"checking %d for client writeability",csocket);
|
| 699 |
if (PSOCK_FD_ISSET(csocket,&wfds))
|
| 700 |
{
|
| 701 |
currsize = virtconn_get_clientout_size(vc);
|
| 702 |
switch (net_send_packet(csocket,queue_peek_packet((t_queue const * const *)virtconn_get_clientout_queue(vc)),&currsize)) /* avoid warning */
|
| 703 |
{
|
| 704 |
case -1:
|
| 705 |
virtconn_destroy(vc);
|
| 706 |
continue;
|
| 707 |
|
| 708 |
case 0: /* still working on it */
|
| 709 |
virtconn_set_clientout_size(vc,currsize);
|
| 710 |
break;
|
| 711 |
|
| 712 |
case 1: /* done sending */
|
| 713 |
packet = queue_pull_packet(virtconn_get_clientout_queue(vc));
|
| 714 |
|
| 715 |
if (hexstrm)
|
| 716 |
{
|
| 717 |
fprintf(hexstrm,"%d: srv class=%s[0x%04hx] type=%s[0x%04hx] length=%hu\n",
|
| 718 |
csocket,
|
| 719 |
packet_get_class_str(packet),packet_get_class(packet),
|
| 720 |
packet_get_type_str(packet,packet_dir_from_server),packet_get_type(packet),
|
| 721 |
packet_get_size(packet));
|
| 722 |
hexdump(hexstrm,packet_get_raw_data(packet,0),packet_get_size(packet));
|
| 723 |
}
|
| 724 |
|
| 725 |
packet_del_ref(packet);
|
| 726 |
virtconn_set_clientout_size(vc,0);
|
| 727 |
}
|
| 728 |
}
|
| 729 |
|
| 730 |
eventlog(eventlog_level_debug,__FUNCTION__,"checking %d for server writeability",ssocket);
|
| 731 |
if (ssocket!=-1 && PSOCK_FD_ISSET(ssocket,&wfds))
|
| 732 |
{
|
| 733 |
if (virtconn_get_state(vc)==virtconn_state_connecting)
|
| 734 |
{
|
| 735 |
int err;
|
| 736 |
psock_t_socklen errlen;
|
| 737 |
|
| 738 |
err = 0;
|
| 739 |
errlen = sizeof(err);
|
| 740 |
if (psock_getsockopt(ssocket,PSOCK_SOL_SOCKET,PSOCK_SO_ERROR,&err,&errlen)<0)
|
| 741 |
{
|
| 742 |
eventlog(eventlog_level_error,__FUNCTION__,"[%d] unable to read socket error (psock_getsockopt[psock_connect]: %s)",virtconn_get_client_socket(vc),pstrerror(psock_errno()));
|
| 743 |
virtconn_destroy(vc);
|
| 744 |
continue;
|
| 745 |
}
|
| 746 |
if (errlen==0 || err==0)
|
| 747 |
virtconn_set_state(vc,virtconn_state_connected);
|
| 748 |
else
|
| 749 |
{
|
| 750 |
eventlog(eventlog_level_error,__FUNCTION__,"[%d] could not connect to server (psock_getsockopt[psock_connect]: %s)",virtconn_get_client_socket(vc),pstrerror(err));
|
| 751 |
virtconn_destroy(vc);
|
| 752 |
continue;
|
| 753 |
}
|
| 754 |
}
|
| 755 |
else
|
| 756 |
{
|
| 757 |
currsize = virtconn_get_serverout_size(vc);
|
| 758 |
switch (net_send_packet(ssocket,queue_peek_packet((t_queue const * const *)virtconn_get_serverout_queue(vc)),&currsize)) /* avoid warning */
|
| 759 |
{
|
| 760 |
case -1:
|
| 761 |
virtconn_destroy(vc);
|
| 762 |
continue;
|
| 763 |
|
| 764 |
case 0: /* still working on it */
|
| 765 |
virtconn_set_serverout_size(vc,currsize);
|
| 766 |
break;
|
| 767 |
|
| 768 |
case 1: /* done sending */
|
| 769 |
packet = queue_pull_packet(virtconn_get_serverout_queue(vc));
|
| 770 |
packet_del_ref(packet);
|
| 771 |
virtconn_set_serverout_size(vc,0);
|
| 772 |
}
|
| 773 |
}
|
| 774 |
}
|
| 775 |
}
|
| 776 |
eventlog(eventlog_level_debug,__FUNCTION__,"done checking");
|
| 777 |
}
|
| 778 |
|
| 779 |
return 0;
|
| 780 |
}
|
| 781 |
|
| 782 |
|
| 783 |
static void usage(char const * progname)
|
| 784 |
{
|
| 785 |
fprintf(stderr,
|
| 786 |
"usage: %s [<options>] <servername> [<TCP portnumber>]\n"
|
| 787 |
" -d FILE, --hexdump=FILE do hex dump of packets into FILE\n"
|
| 788 |
" -l FILE, --logfile=FILE save eventlog lines into FILE\n"
|
| 789 |
" -p PORT, --port=PORT listen for connections on port PORT\n"
|
| 790 |
#ifdef DO_DAEMONIZE
|
| 791 |
" -f, --foreground don't daemonize\n"
|
| 792 |
#else
|
| 793 |
" -f, --foreground don't daemonize (default)\n"
|
| 794 |
#endif
|
| 795 |
" -h, --help, --usage show this information and exit\n"
|
| 796 |
" -v, --version print version number and exit\n",
|
| 797 |
progname);
|
| 798 |
exit(STATUS_FAILURE);
|
| 799 |
}
|
| 800 |
|
| 801 |
|
| 802 |
extern int main(int argc, char * argv[])
|
| 803 |
{
|
| 804 |
int a;
|
| 805 |
char const * logfile=NULL;
|
| 806 |
char const * hexfile=NULL;
|
| 807 |
int foreground=0;
|
| 808 |
unsigned short port=0;
|
| 809 |
char const * servname=NULL;
|
| 810 |
unsigned short servport=0;
|
| 811 |
struct hostent * host;
|
| 812 |
struct sockaddr_in servaddr;
|
| 813 |
|
| 814 |
if (argc<1 || !argv || !argv[0])
|
| 815 |
{
|
| 816 |
fprintf(stderr,"bad arguments\n");
|
| 817 |
return STATUS_FAILURE;
|
| 818 |
}
|
| 819 |
|
| 820 |
for (a=1; a<argc; a++)
|
| 821 |
if (servname && isdigit((int)argv[a][0]) && a+1>=argc)
|
| 822 |
{
|
| 823 |
if (str_to_ushort(argv[a],&servport)<0)
|
| 824 |
{
|
| 825 |
fprintf(stderr,"%s: \"%s\" should be a positive integer\n",argv[0],argv[a]);
|
| 826 |
usage(argv[0]);
|
| 827 |
}
|
| 828 |
}
|
| 829 |
else if (!servname && argv[a][0]!='-' && a+2>=argc)
|
| 830 |
servname = argv[a];
|
| 831 |
else if (strncmp(argv[a],"--hexdump=",10)==0)
|
| 832 |
{
|
| 833 |
if (hexfile)
|
| 834 |
{
|
| 835 |
fprintf(stderr,"%s: hexdump file was already specified as \"%s\"\n",argv[0],hexfile);
|
| 836 |
usage(argv[0]);
|
| 837 |
}
|
| 838 |
hexfile = &argv[a][10];
|
| 839 |
}
|
| 840 |
else if (strcmp(argv[a],"-d")==0)
|
| 841 |
{
|
| 842 |
if (a+1>=argc)
|
| 843 |
{
|
| 844 |
fprintf(stderr,"%s: option \"%s\" requires an argument\n",argv[0],argv[a]);
|
| 845 |
usage(argv[0]);
|
| 846 |
}
|
| 847 |
if (hexfile)
|
| 848 |
{
|
| 849 |
fprintf(stderr,"%s: hexdump file was already specified as \"%s\"\n",argv[0],hexfile);
|
| 850 |
usage(argv[0]);
|
| 851 |
}
|
| 852 |
a++;
|
| 853 |
hexfile = argv[a];
|
| 854 |
}
|
| 855 |
else if (strncmp(argv[a],"--logfile=",10)==0)
|
| 856 |
{
|
| 857 |
if (logfile)
|
| 858 |
{
|
| 859 |
fprintf(stderr,"%s: eventlog file was already specified as \"%s\"\n",argv[0],logfile);
|
| 860 |
usage(argv[0]);
|
| 861 |
}
|
| 862 |
logfile = &argv[a][10];
|
| 863 |
}
|
| 864 |
else if (strcmp(argv[a],"-l")==0)
|
| 865 |
{
|
| 866 |
if (a+1>=argc)
|
| 867 |
{
|
| 868 |
fprintf(stderr,"%s: option \"%s\" requires an argument\n",argv[0],argv[a]);
|
| 869 |
usage(argv[0]);
|
| 870 |
}
|
| 871 |
if (logfile)
|
| 872 |
{
|
| 873 |
fprintf(stderr,"%s: eventlog file was already specified as \"%s\"\n",argv[0],logfile);
|
| 874 |
usage(argv[0]);
|
| 875 |
}
|
| 876 |
a++;
|
| 877 |
logfile = argv[a];
|
| 878 |
}
|
| 879 |
else if (strncmp(argv[a],"--port=",7)==0)
|
| 880 |
{
|
| 881 |
if (port>0)
|
| 882 |
{
|
| 883 |
fprintf(stderr,"%s: listen port was already specified as \"%hu\"\n",argv[0],port);
|
| 884 |
usage(argv[0]);
|
| 885 |
}
|
| 886 |
if (str_to_ushort(&argv[a][7],&port)<0)
|
| 887 |
{
|
| 888 |
fprintf(stderr,"%s: \"%s\" should be a positive integer\n",argv[0],argv[a]);
|
| 889 |
usage(argv[0]);
|
| 890 |
}
|
| 891 |
}
|
| 892 |
else if (strcmp(argv[a],"-p")==0)
|
| 893 |
{
|
| 894 |
if (a+1>=argc)
|
| 895 |
{
|
| 896 |
fprintf(stderr,"%s: option \"%s\" requires an argument\n",argv[0],argv[a]);
|
| 897 |
usage(argv[0]);
|
| 898 |
}
|
| 899 |
if (port>0)
|
| 900 |
{
|
| 901 |
fprintf(stderr,"%s: eventlog file was already specified as \"%hu\"\n",argv[0],port);
|
| 902 |
usage(argv[0]);
|
| 903 |
}
|
| 904 |
a++;
|
| 905 |
if (str_to_ushort(argv[a],&port)<0)
|
| 906 |
{
|
| 907 |
fprintf(stderr,"%s: \"%s\" should be a positive integer\n",argv[0],argv[a]);
|
| 908 |
usage(argv[0]);
|
| 909 |
}
|
| 910 |
}
|
| 911 |
else if (strcmp(argv[a],"-f")==0 || strcmp(argv[a],"--foreground")==0)
|
| 912 |
foreground = 1;
|
| 913 |
else if (strcmp(argv[a],"-h")==0 || strcmp(argv[a],"--help")==0 || strcmp(argv[a],"--usage")==0)
|
| 914 |
usage(argv[0]);
|
| 915 |
else if (strcmp(argv[a],"-v")==0 || strcmp(argv[a],"--version")==0)
|
| 916 |
{
|
| 917 |
printf("version "PVPGN_VERSION"\n");
|
| 918 |
return STATUS_SUCCESS;
|
| 919 |
}
|
| 920 |
else if (strcmp(argv[a],"--hexdump")==0 || strcmp(argv[a],"--logfile")==0 || strcmp(argv[a],"--port")==0)
|
| 921 |
{
|
| 922 |
fprintf(stderr,"%s: option \"%s\" requires and argument.\n",argv[0],argv[a]);
|
| 923 |
usage(argv[0]);
|
| 924 |
}
|
| 925 |
else
|
| 926 |
{
|
| 927 |
fprintf(stderr,"%s: bad option \"%s\"\n",argv[0],argv[a]);
|
| 928 |
usage(argv[0]);
|
| 929 |
}
|
| 930 |
|
| 931 |
if (port==0)
|
| 932 |
port = BNETD_SERV_PORT;
|
| 933 |
if (servport==0)
|
| 934 |
servport = BNETD_SERV_PORT;
|
| 935 |
if (!servname)
|
| 936 |
servname = BNETD_DEFAULT_HOST;
|
| 937 |
|
| 938 |
if (psock_init()<0)
|
| 939 |
{
|
| 940 |
fprintf(stderr,"%s: could not initialize socket functions\n",argv[0]);
|
| 941 |
return STATUS_FAILURE;
|
| 942 |
}
|
| 943 |
|
| 944 |
if (!(host = gethostbyname(servname)))
|
| 945 |
{
|
| 946 |
fprintf(stderr,"%s: unknown host \"%s\"\n",argv[0],servname);
|
| 947 |
return STATUS_FAILURE;
|
| 948 |
}
|
| 949 |
|
| 950 |
memset(&servaddr,0,sizeof(servaddr));
|
| 951 |
servaddr.sin_family = PSOCK_AF_INET;
|
| 952 |
servaddr.sin_port = htons(servport);
|
| 953 |
memcpy(&servaddr.sin_addr.s_addr,host->h_addr_list[0],host->h_length);
|
| 954 |
|
| 955 |
eventlog_set(stderr);
|
| 956 |
/* errors to eventlog from here on... */
|
| 957 |
|
| 958 |
if (logfile)
|
| 959 |
{
|
| 960 |
eventlog_clear_level();
|
| 961 |
eventlog_add_level("error");
|
| 962 |
eventlog_add_level("warn");
|
| 963 |
eventlog_add_level("info");
|
| 964 |
eventlog_add_level("debug");
|
| 965 |
|
| 966 |
if (eventlog_open(logfile)<0)
|
| 967 |
{
|
| 968 |
eventlog(eventlog_level_fatal,__FUNCTION__,"could not use file \"%s\" for the eventlog (exiting)",logfile);
|
| 969 |
return STATUS_FAILURE;
|
| 970 |
}
|
| 971 |
}
|
| 972 |
|
| 973 |
#ifdef DO_DAEMONIZE
|
| 974 |
if (!foreground)
|
| 975 |
{
|
| 976 |
if (chdir("/")<0)
|
| 977 |
{
|
| 978 |
eventlog(eventlog_level_error,__FUNCTION__,"could not change working directory to / (chdir: %s)",pstrerror(errno));
|
| 979 |
return STATUS_FAILURE;
|
| 980 |
}
|
| 981 |
|
| 982 |
switch (fork())
|
| 983 |
{
|
| 984 |
case -1:
|
| 985 |
eventlog(eventlog_level_error,__FUNCTION__,"could not fork (fork: %s)",pstrerror(errno));
|
| 986 |
return STATUS_FAILURE;
|
| 987 |
case 0: /* child */
|
| 988 |
break;
|
| 989 |
default: /* parent */
|
| 990 |
return STATUS_SUCCESS;
|
| 991 |
}
|
| 992 |
|
| 993 |
close(STDINFD);
|
| 994 |
close(STDOUTFD);
|
| 995 |
close(STDERRFD);
|
| 996 |
|
| 997 |
# ifdef HAVE_SETPGID
|
| 998 |
if (setpgid(0,0)<0)
|
| 999 |
{
|
| 1000 |
eventlog(eventlog_level_error,__FUNCTION__,"could not create new process group (setpgid: %s)",pstrerror(errno));
|
| 1001 |
return STATUS_FAILURE;
|
| 1002 |
}
|
| 1003 |
# else
|
| 1004 |
# ifdef HAVE_SETPGRP
|
| 1005 |
# ifdef SETPGRP_VOID
|
| 1006 |
if (setpgrp()<0)
|
| 1007 |
{
|
| 1008 |
eventlog(eventlog_level_error,__FUNCTION__,"could not create new process group (setpgrp: %s)",pstrerror(errno));
|
| 1009 |
return STATUS_FAILURE;
|
| 1010 |
}
|
| 1011 |
# else
|
| 1012 |
if (setpgrp(0,0)<0)
|
| 1013 |
{
|
| 1014 |
eventlog(eventlog_level_error,__FUNCTION__,"could not create new process group (setpgrp: %s)",pstrerror(errno));
|
| 1015 |
return STATUS_FAILURE;
|
| 1016 |
}
|
| 1017 |
# endif
|
| 1018 |
# else
|
| 1019 |
# ifdef HAVE_SETSID
|
| 1020 |
if (setsid()<0)
|
| 1021 |
{
|
| 1022 |
eventlog(eventlog_level_error,__FUNCTION__,"could not create new process group (setsid: %s)",pstrerror(errno));
|
| 1023 |
return STATUS_FAILURE;
|
| 1024 |
}
|
| 1025 |
# else
|
| 1026 |
# error "One of setpgid(), setpgrp(), or setsid() is required"
|
| 1027 |
# endif
|
| 1028 |
# endif
|
| 1029 |
# endif
|
| 1030 |
}
|
| 1031 |
#endif
|
| 1032 |
|
| 1033 |
if (hexfile)
|
| 1034 |
if (!(hexstrm = fopen(hexfile,"w")))
|
| 1035 |
eventlog(eventlog_level_error,__FUNCTION__,"could not open file \"%s\" for writing the hexdump (fopen: %s)",hexfile,pstrerror(errno));
|
| 1036 |
|
| 1037 |
if (proxy_process(port,servaddr)<0)
|
| 1038 |
{
|
| 1039 |
eventlog(eventlog_level_fatal,__FUNCTION__,"failed to initialize network (exiting)");
|
| 1040 |
return STATUS_FAILURE;
|
| 1041 |
}
|
| 1042 |
|
| 1043 |
if (hexstrm)
|
| 1044 |
if (fclose(hexstrm)<0)
|
| 1045 |
eventlog(eventlog_level_error,__FUNCTION__,"could not close hexdump file \"%s\" after writing (fclose: %s)",hexfile,pstrerror(errno));
|
| 1046 |
|
| 1047 |
return STATUS_SUCCESS;
|
| 1048 |
}
|
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| 
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