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/*
* $Id: parse_from.c,v 1.5 2006/03/01 10:58:38 bogdan_iancu Exp $
*
* Copyright (C) 2001-2003 FhG Fokus
*
* This file is part of openser, a free SIP server.
*
* openser 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
*
* openser 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
*
* History:
* --------
* 2005-07-12 missing TAG is reported as error (bogdan)
*/
#include "parse_from.h"
#include "parse_to.h"
#include <stdlib.h>
#include <string.h>
#include "../dprint.h"
#include "msg_parser.h"
#include "../ut.h"
#include "../mem/mem.h"
/*
* This method is used to parse the from header. It was decided not to parse
* anything in core that is not *needed* so this method gets called by
* rad_acc module and any other modules that needs the FROM header.
*
* params: msg : sip msg
* returns =0 on success,
* <0 on failure.
*/
int parse_from_header( struct sip_msg *msg)
{
struct to_body* from_b;
if ( !msg->from && ( parse_headers(msg,HDR_FROM_F,0)==-1 || !msg->from)) {
LOG(L_ERR,"ERROR:parse_from_header: bad msg or missing FROM header\n");
goto error;
}
/* maybe the header is already parsed! */
if (msg->from->parsed)
return 0;
/* bad luck! :-( - we have to parse it */
/* first, get some memory */
from_b = pkg_malloc(sizeof(struct to_body));
if (from_b == 0) {
LOG(L_ERR, "ERROR:parse_from_header: out of pkg_memory\n");
goto error;
}
/* now parse it!! */
memset(from_b, 0, sizeof(struct to_body));
parse_to(msg->from->body.s,msg->from->body.s+msg->from->body.len+1,from_b);
if (from_b->error == PARSE_ERROR) {
LOG(L_ERR, "ERROR:parse_from_header: bad from header\n");
free_to(from_b);
goto error;
}
/* REGISTER doesn't have a from tag :( -bogdan
if (from_b->tag_value.len==0 || from_b->tag_value.s==0) {
LOG(L_ERR, "ERROR:parse_from_header: missing TAG value\n");
free_to(from_b);
goto error;
}
*/
msg->from->parsed = from_b;
return 0;
error:
return -1;
}
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