/* $Id$
  *
  * find & manage listen addresses 
  *
  * Copyright (C) 2001-2003 Fhg Fokus
  *
  * This file is part of ser, a free SIP server.
  *
  * ser 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
  *
  * For a license to use the ser software under conditions
  * other than those described here, or to purchase support for this
  * software, please contact iptel.org by e-mail at the following addresses:
  *    info@iptel.org
  *
  * ser 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
  */
 /*
  * This file contains code that initializes and handles ser listen addresses
  * lists (struct socket_info). It is used mainly on startup.
  * 
  * History:
  * --------
  *  2003-10-22  created by andrei
  */
 
 
 #ifndef socket_info_h
 #define socket_info_h
 
 #include "ip_addr.h" 
 #include "dprint.h"
 /* struct socket_info is defined in ip_addr.h */
 
 struct socket_info* udp_listen;
 #ifdef USE_TCP
 struct socket_info* tcp_listen;
 #endif
 #ifdef USE_TLS
 struct socket_info* tls_listen;
 #endif
 
 
 int add_listen_iface(char* name, unsigned short port, unsigned short proto,
 							enum si_flags flags);
 int fix_all_socket_lists();
 void print_all_socket_lists();
 void print_aliases();
 
 
 /* helper function:
  * returns next protocol, if the last one is reached return 0
  * usefull for cycling on the supported protocols */
 static inline int next_proto(unsigned short proto)
 {
 	switch(proto){
 		case PROTO_NONE:
 			return PROTO_UDP;
 		case PROTO_UDP:
 #ifdef	USE_TCP
 			return PROTO_TCP;
 #else
 			return 0;
 #endif
 #ifdef USE_TCP
 		case PROTO_TCP:
 #ifdef USE_TLS
 			return PROTO_TLS;
 #else
 			return 0;
 #endif
 #endif
 #ifdef USE_TLS
 		case PROTO_TLS:
 			return 0;
 #endif
 		default:
 			LOG(L_ERR, "ERROR: next_proto: unknown proto %d\n", proto);
 	}
 	return 0;
 }
 
 
 
 /* gets first non-null socket_info structure
  * (usefull if for. e.g we are not listening on any udp sockets )
  */
 inline static struct socket_info* get_first_socket()
 {
 	if (udp_listen) return udp_listen;
 #ifdef USE_TCP
 	else if (tcp_listen) return tcp_listen;
 #ifdef USE_TLS
 	else if (tls_listen) return tls_listen;
 #endif
 #endif
 	return 0;
 }
 
 
 
 #endif