/*
 * $Id$
 *
 *
 * 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
 */


#ifndef _MSGBUILDER_H
#define _MSGBUILDER_H

#include "defs.h"


#define CSEQ "CSeq: "
#define CSEQ_LEN (sizeof(CSEQ)-1)
#define TO "To: "
#define TO_LEN (sizeof(TO)-1)
#define CALLID "Call-ID: "
#define CALLID_LEN (sizeof(CALLID)-1)
#define FROM "From: "
#define FROM_LEN (sizeof(FROM)-1)
#define FROMTAG ";tag="
#define FROMTAG_LEN (sizeof(FROMTAG)-1)
#define TOTAG ";tag="
#define TOTAG_LEN (sizeof(TOTAG)-1)

#ifdef _OBSOLETED
#define UAC_CSEQNR "1"
#define UAC_CSEQNR_LEN 1
#define CONTENT_LENGTH "Content-Length: "
#define CONTENT_LENGTH_LEN (sizeof(CONTENT_LENGTH)-1)
#endif


/* convenience macros */
#define memapp(_d,_s,_len) \
	do{\
		memcpy((_d),(_s),(_len));\
		(_d) += (_len);\
	}while(0);

#define  append_mem_block(_d,_s,_len) \
	do{\
		memcpy((_d),(_s),(_len));\
		(_d) += (_len);\
	}while(0);

#ifdef _OBSO
#define append_str(_p,_str) \
	do{ \
		memcpy((_p), (_str).s, (_str).len); \
		(_p)+=(_str).len); \
	} while(0);
#endif

char *build_local(struct cell *Trans, unsigned int branch,
	unsigned int *len, char *method, int method_len, str *to);

char *build_uac_request(  str msg_type, str dst, str from,
	str fromtag, int cseq, str callid, str headers, 
	str body, int branch,
	struct cell *t, unsigned int *len);


char *build_uac_request_dlg(str* msg,            /* Method */
	                    str* ruri,           /* Request-URI */
	                    str* to,             /* To header field w/o tag */
	                    str* from,           /* From header field w/o tag */
	                    str* totag,          /* To tag */
	                    str* fromtag,        /* From tag */
	                    unsigned int cseq,  /* CSeq number */
	                    str* callid,         /* Call-ID */
	                    str* headers,        /* Headers to be appended including CRLF */
	                    str* body,           /* Body of the message */
	                    int branch,         /* Branch */
	                    struct cell *t,
	                    unsigned int *len
	                   );


int t_calc_branch(struct cell *t,
	int b, char *branch, int *branch_len);


#endif