kamailio/socket_info.h

/* $Id$
 *
 * 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:
 *    [email protected]
 *
 * 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
 *  2008-08-08  sctp support (andrei)
 */


#ifndef socket_info_h
#define socket_info_h

#include "ip_addr.h" 
#include "dprint.h"
#include "globals.h"



/* struct socket_info is defined in ip_addr.h */

extern struct socket_info* udp_listen;
#ifdef USE_TCP
extern struct socket_info* tcp_listen;
#endif
#ifdef USE_TLS
extern struct socket_info* tls_listen;
#endif
#ifdef USE_SCTP
extern struct socket_info* sctp_listen;
#endif

extern enum sip_protos nxt_proto[PROTO_LAST+1];



/* flags for finding out the address types */
#define SOCKET_T_IPV4  1
#define SOCKET_T_IPV6  2
#define SOCKET_T_UDP   4
#define SOCKET_T_TCP   8
#define SOCKET_T_TLS  16
#define SOCKET_T_SCTP 32

extern int socket_types;

void init_proto_order();

int add_listen_iface(char* name, struct name_lst* nlst,
						unsigned short port, unsigned short proto,
						enum si_flags flags);
int fix_all_socket_lists();
void print_all_socket_lists();
void print_aliases();

struct socket_info* grep_sock_info(str* host, unsigned short port,
										unsigned short proto);
struct socket_info* grep_sock_info_by_port(unsigned short port,
											unsigned short proto);
struct socket_info* find_si(struct ip_addr* ip, unsigned short port,
												unsigned short proto);



/* helper function:
 * returns next protocol, if the last one is reached return 0
 * useful for cycling on the supported protocols
 * order: udp, tcp, tls, sctp */
static inline int next_proto(unsigned short proto)
{
	if (proto>PROTO_LAST)
			LOG(L_ERR, "ERROR: next_proto: unknown proto %d\n", proto);
	else
		return nxt_proto[proto];
	return 0;
}



/* gets first non-null socket_info structure
 * (useful 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;
#endif
#ifdef USE_SCTP
	else if (sctp_listen) return sctp_listen;
#endif
#ifdef USE_TCP
#ifdef USE_TLS
	else if (tls_listen) return tls_listen;
#endif
#endif
	return 0;
}


#endif