/*
 * $Id: patch-modules::nathelper::nathelper.h,v 1.2 2005/04/05 13:10:08 netch Exp $
 *
 *
 * Copyright (C) 2005 Porta Software Ltd.
 *
 * 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
 */

#ifndef nathelper_H_
#define nathelper_H_

/* Handy macros */
#define	STR2IOVEC(sx, ix)	do {(ix).iov_base = (sx).s; (ix).iov_len = (sx).len;} while(0)
#define SZ2IOVEC(sx, ix)	do {char *_t_p = (ix).iov_base = (sx); (ix).iov_len = strlen(_t_p);} while(0)

struct rtpp_node;

/* Parameters from nathelper.c */
extern struct socket_info* force_socket;

/* Functions from nathelper.c */
int isnulladdr(str *, int);
int get_to_tag(struct sip_msg* _m, str* _tag);
int get_from_tag(struct sip_msg* _m, str* _tag);
int get_callid(struct sip_msg* _m, str* _cid);
int extract_mediaip(str *, str *, int *);
int extract_mediaport(str *, str *);
int alter_mediaip(struct sip_msg *, str *, str *, int, str *, int, int);
int alter_mediaport(struct sip_msg *, str *, str *, str *, int);
struct rtpp_node * select_rtpp_node(str, int);
char *send_rtpp_command(struct rtpp_node*, struct iovec *, int);
char* find_sdp_line(char*, char*, char);
char* find_next_sdp_line(char*, char*, char, char*);

/* Functions from moh.c */
int is_hold_f(struct sip_msg *msg, char *str1, char *str2);
int start_moh_f(struct sip_msg *msg, char *str1, char *str2);
int stop_moh_f(struct sip_msg *msg, char *str1, char *str2);

/* Functions from natping.c */
int natpinger_init(void);
int natpinger_child_init(int);
int natpinger_cleanup(void);

/* Variables from moh.c referenced from nathelper.c */
extern char *pname_audio;
extern char *pname_video;
extern char *codecs_audio;
extern char *codecs_video;

/* Variables from natping.c referenced from nathelper.c */
extern int natping_interval;
extern int ping_nated_only;
extern char *natping_method;

#endif