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/*
* $Id: path.c,v 1.12 2006/07/04 13:44:00 bogdan_iancu Exp $
*
* Helper functions for Path support.
*
* Copyright (C) 2006 Andreas Granig <agranig@linguin.org>
*
* 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
*
*/
#include "../../data_lump.h"
#include "../../parser/parse_rr.h"
#include "../../parser/parse_uri.h"
#include "path.h"
#include "reg_mod.h"
/*
* Combines all Path HF bodies into one string.
*/
int build_path_vector(struct sip_msg *_m, str *path, str *received)
{
static char buf[MAX_PATH_SIZE];
char *p;
struct hdr_field *hdr;
struct sip_uri puri;
rr_t *route = 0;
path->len = 0;
path->s = 0;
received->s = 0;
received->len = 0;
if(parse_headers(_m, HDR_EOH_F, 0) < 0) {
LOG(L_ERR,"ERROR: build_path_vector(): Error while parsing message\n");
goto error;
}
for( hdr=_m->path,p=buf ; hdr ; hdr=hdr->sibling) {
/* check for max. Path length */
if( p-buf+hdr->body.len+1 >= MAX_PATH_SIZE) {
LOG(L_ERR, "ERROR: build_path_vector(): Overall Path body "
"exceeds max. length of %d\n",MAX_PATH_SIZE);
goto error;
}
if(p!=buf)
*(p++) = ',';
memcpy( p, hdr->body.s, hdr->body.len);
p += hdr->body.len;
}
if (p!=buf) {
/* check if next hop is a loose router */
if (parse_rr_body( buf, p-buf, &route) < 0) {
LOG(L_ERR, "ERROR: build_path_vector(): Failed to parse Path "
"body, no head found\n");
goto error;
}
if (parse_uri(route->nameaddr.uri.s,route->nameaddr.uri.len,&puri)<0){
LOG(L_ERR, "ERROR: build_path_vector(): Error while parsing "
"first Path URI\n");
goto error;
}
if (!puri.lr.s) {
LOG(L_ERR, "ERROR: build_path_vector(): First Path URI is not a "
"loose-router, not supported\n");
goto error;
}
if (path_use_params) {
param_hooks_t hooks;
param_t *params;
if (parse_params(&(puri.params),CLASS_CONTACT,&hooks,¶ms)!=0){
LOG(L_ERR, "ERROR: build_path_vector(): Error parsing "
"parameters of first hop\n");
goto error;
}
if (hooks.contact.received)
*received = hooks.contact.received->body;
/*for (;params; params = params->next) {
if (params->type == P_RECEIVED) {
*received = hooks.contact.received->body;
break;
}
}*/
free_params(params);
}
free_rr(&route);
}
path->s = buf;
path->len = p-buf;
return 0;
error:
if(route) free_rr(&route);
return -1;
}
/*
* Path must be available. Function returns the first uri
* from Path without any dupication.
*/
int get_path_dst_uri(str *_p, str *_dst)
{
rr_t *route = 0;
DBG("DEBUG: get_path_dst_uri(): Path for branch: '%.*s'\n",
_p->len, _p->s);
if(parse_rr_body(_p->s, _p->len, &route) < 0) {
LOG(L_ERR, "ERROR: get_path_dst_uri(): Failed to parse "
"Path body\n");
return -1;
}
if(!route) {
LOG(L_ERR, "ERROR: get_path_dst_uri(): Failed to parse Path body,"
" no head found\n");
return -1;
}
*_dst = route->nameaddr.uri;
free_rr(&route);
return 0;
}
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