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/*
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* Copyright (C) 2000,2001 Onlyer (onlyer@263.net)
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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,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* 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 "setup.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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#include <ctype.h>
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#ifdef HAVE_STRING_H
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# include <string.h>
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#else
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# ifdef HAVE_STRINGS_H
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# include <strings.h>
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# endif
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# ifdef HAVE_MEMORY_H
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# include <memory.h>
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# endif
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#endif
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#include "compat/memset.h"
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#include "compat/strdup.h"
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#ifdef STDC_HEADERS
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# include <stdlib.h>
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#else
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# ifdef HAVE_MALLOC_H
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# include <malloc.h>
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# endif
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#endif
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#include <errno.h>
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#include "compat/strerror.h"
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#ifdef HAVE_UNISTD_H
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# include <unistd.h>
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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_SOCKET_H
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# include <sys/socket.h>
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#endif
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#include "compat/psock.h"
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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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#include <ctype.h>
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#include "compat/psock.h"
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#include "compat/strtoul.h"
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#include "connection.h"
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#include "bnetd.h"
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#include "net.h"
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#include "s2s.h"
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#include "common/fdwatch.h"
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#include "server.h"
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#include "common/eventlog.h"
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#include "common/xalloc.h"
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#include "common/setup_after.h"
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extern int s2s_check(void)
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{
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bnetd_check();
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return 0;
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}
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extern int s2s_init(void)
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{
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bnetd_init();
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return 0;
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}
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extern t_connection * s2s_create(char const * server, unsigned short def_port, t_conn_class class)
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{
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struct sockaddr_in addr, laddr;
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psock_t_socklen laddr_len;
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unsigned int ip;
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unsigned short port;
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int sock, connected;
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t_connection * c;
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char * p, * tserver;
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ASSERT(server,NULL);
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tserver=xstrdup(server);
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p=strchr(tserver,':');
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if (p) {
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port=(unsigned short)strtoul(p+1,NULL,10);
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*p='\0';
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} else {
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port=def_port;
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}
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if ((sock=net_socket(PSOCK_SOCK_STREAM))<0) {
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eventlog(eventlog_level_error,__FUNCTION__,"error creating s2s socket");
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xfree(tserver);
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return NULL;
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}
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memset(&addr,0,sizeof(addr));
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addr.sin_family = PSOCK_AF_INET;
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addr.sin_port = htons(port);
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addr.sin_addr.s_addr= net_inet_addr(tserver);
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xfree(tserver);
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eventlog(eventlog_level_info,__FUNCTION__,"try make s2s connection to %s",server);
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if (psock_connect(sock,(struct sockaddr *)&addr,sizeof(addr))<0) {
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if (psock_errno()!=PSOCK_EWOULDBLOCK && psock_errno() != PSOCK_EINPROGRESS) {
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eventlog(eventlog_level_error,__FUNCTION__,"error connecting to %s (psock_connect: %s)",server,pstrerror(psock_errno()));
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psock_close(sock);
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return NULL;
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}
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connected=0;
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eventlog(eventlog_level_info,__FUNCTION__,"connection to s2s server %s is in progress",server);
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} else {
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connected=1;
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eventlog(eventlog_level_info,__FUNCTION__,"connected to s2s server %s",server);
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}
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laddr_len=sizeof(laddr);
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memset(&laddr,0,sizeof(laddr));
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ip=port=0;
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if (psock_getsockname(sock,(struct sockaddr *)&laddr,&laddr_len)<0) {
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eventlog(eventlog_level_error,__FUNCTION__,"unable to get local socket info");
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} else {
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if (laddr.sin_family != PSOCK_AF_INET) {
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eventlog(eventlog_level_error,__FUNCTION__,"got bad socket family %d",laddr.sin_family);
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} else {
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ip=ntohl(laddr.sin_addr.s_addr);
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port=ntohs(laddr.sin_port);
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}
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}
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if (!(c=d2cs_conn_create(sock,ip,port, ntohl(addr.sin_addr.s_addr), ntohs(addr.sin_port)))) {
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eventlog(eventlog_level_error,__FUNCTION__,"error create s2s connection");
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psock_close(sock);
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return NULL;
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}
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if (connected) {
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if (conn_add_fd(c,fdwatch_type_read, d2cs_server_handle_tcp)<0) {
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eventlog(eventlog_level_error, __FUNCTION__, "error adding socket %d to fdwatch pool (max sockets?)",sock);
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d2cs_conn_set_state(c,conn_state_destroy);
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return NULL;
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}
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d2cs_conn_set_state(c,conn_state_init);
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} else {
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if (conn_add_fd(c, fdwatch_type_write, d2cs_server_handle_tcp)<0) {
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eventlog(eventlog_level_error, __FUNCTION__, "error adding socket %d to fdwatch pool (max sockets?)",sock);
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d2cs_conn_set_state(c,conn_state_destroy);
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return NULL;
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}
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d2cs_conn_set_state(c,conn_state_connecting);
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}
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d2cs_conn_set_class(c,class);
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return c;
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}
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extern int s2s_destroy(t_connection * c)
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{
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ASSERT(c,-1);
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switch (d2cs_conn_get_class(c)) {
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case conn_class_bnetd:
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bnetd_destroy(c);
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break;
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default:
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eventlog(eventlog_level_error,__FUNCTION__,"got bad s2s connection class %d",d2cs_conn_get_class(c));
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return -1;
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}
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return 0;
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}
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