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116 lines
2.9 KiB
116 lines
2.9 KiB
/*
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* $Id$
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*
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* Helper functions for Path support.
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*
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* Copyright (C) 2006 Andreas Granig <agranig@linguin.org>
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*
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* This file is part of Kamailio, a free SIP server.
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*
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* Kamailio is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version
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*
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* Kamailio is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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/*!
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* \file
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* \brief SIP registrar module - Helper functions for Path support
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* \ingroup registrar
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*/
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#include "../../data_lump.h"
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#include "../../parser/parse_rr.h"
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#include "../../parser/parse_uri.h"
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#include "path.h"
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#include "reg_mod.h"
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/*! \brief
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* Combines all Path HF bodies into one string.
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*/
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int build_path_vector(struct sip_msg *_m, str *path, str *received)
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{
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static char buf[MAX_PATH_SIZE];
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char *p;
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struct hdr_field *hdr;
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struct sip_uri puri;
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rr_t *route = 0;
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path->len = 0;
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path->s = 0;
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received->s = 0;
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received->len = 0;
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if(parse_headers(_m, HDR_EOH_F, 0) < 0) {
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LM_ERR("failed to parse the message\n");
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goto error;
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}
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for( hdr=_m->path,p=buf ; hdr ; hdr = next_sibling_hdr(hdr)) {
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/* check for max. Path length */
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if( p-buf+hdr->body.len+1 >= MAX_PATH_SIZE) {
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LM_ERR("Overall Path body exceeds max. length of %d\n",
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MAX_PATH_SIZE);
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goto error;
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}
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if(p!=buf)
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*(p++) = ',';
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memcpy( p, hdr->body.s, hdr->body.len);
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p += hdr->body.len;
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}
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if (p!=buf) {
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/* check if next hop is a loose router */
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if (parse_rr_body( buf, p-buf, &route) < 0) {
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LM_ERR("failed to parse Path body, no head found\n");
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goto error;
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}
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if (parse_uri(route->nameaddr.uri.s,route->nameaddr.uri.len,&puri)<0){
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LM_ERR("failed to parse the first Path URI\n");
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goto error;
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}
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if (!puri.lr.s) {
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LM_ERR("first Path URI is not a loose-router, not supported\n");
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goto error;
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}
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if (path_use_params) {
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param_hooks_t hooks;
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param_t *params;
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if (parse_params(&(puri.params),CLASS_CONTACT,&hooks,¶ms)!=0){
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LM_ERR("failed to parse parameters of first hop\n");
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goto error;
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}
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if (hooks.contact.received)
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*received = hooks.contact.received->body;
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/*for (;params; params = params->next) {
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if (params->type == P_RECEIVED) {
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*received = hooks.contact.received->body;
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break;
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}
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}*/
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free_params(params);
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}
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free_rr(&route);
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}
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path->s = buf;
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path->len = p-buf;
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return 0;
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error:
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if(route) free_rr(&route);
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return -1;
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}
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