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kamailio/modules/registrar/common.c

118 lines
2.8 KiB

/*
* Common stuff
*
* Copyright (C) 2001-2003 FhG Fokus
*
* This file is part of Kamailio, a free SIP server.
*
* Kamailio 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
*
* Kamailio 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
/*!
* \file
* \brief SIP registrar module
* \ingroup registrar
*/
#include <string.h>
#include "../../dprint.h"
#include "rerrno.h"
#include "reg_mod.h"
#include "common.h"
#include "config.h"
#define MAX_AOR_LEN 256
/*! \brief
* Extract Address of Record
*/
int extract_aor(str* _uri, str* _a, sip_uri_t *_pu)
{
static char aor_buf[MAX_AOR_LEN];
str tmp;
sip_uri_t turi;
sip_uri_t *puri;
int user_len;
str *uri;
str realm_prefix = {0};
memset(aor_buf, 0, MAX_AOR_LEN);
uri=_uri;
if(_pu!=NULL)
puri = _pu;
else
puri = &turi;
if (parse_uri(uri->s, uri->len, puri) < 0) {
rerrno = R_AOR_PARSE;
LM_ERR("failed to parse AoR [%.*s]\n", uri->len, uri->s);
return -1;
}
if ( (puri->user.len + puri->host.len + 1) > MAX_AOR_LEN
|| puri->user.len > USERNAME_MAX_SIZE
|| puri->host.len > DOMAIN_MAX_SIZE ) {
rerrno = R_AOR_LEN;
LM_ERR("Address Of Record too long\n");
return -2;
}
_a->s = aor_buf;
_a->len = puri->user.len;
if (un_escape(&puri->user, _a) < 0) {
rerrno = R_UNESCAPE;
LM_ERR("failed to unescape username\n");
return -3;
}
user_len = _a->len;
if (reg_use_domain) {
if (user_len)
aor_buf[_a->len++] = '@';
/* strip prefix (if defined) */
realm_prefix.len = cfg_get(registrar, registrar_cfg, realm_pref).len;
if(realm_prefix.len>0) {
realm_prefix.s = cfg_get(registrar, registrar_cfg, realm_pref).s;
LM_DBG("realm prefix is [%.*s]\n", realm_prefix.len,
(realm_prefix.len>0)?realm_prefix.s:"");
}
if (realm_prefix.len>0
&& realm_prefix.len<puri->host.len
&& (memcmp(realm_prefix.s, puri->host.s, realm_prefix.len)==0))
{
memcpy(aor_buf + _a->len, puri->host.s + realm_prefix.len,
puri->host.len - realm_prefix.len);
_a->len += puri->host.len - realm_prefix.len;
} else {
memcpy(aor_buf + _a->len, puri->host.s, puri->host.len);
_a->len += puri->host.len;
}
}
if (cfg_get(registrar, registrar_cfg, case_sensitive) && user_len) {
tmp.s = _a->s + user_len + 1;
tmp.len = _a->s + _a->len - tmp.s;
strlower(&tmp);
} else {
strlower(_a);
}
return 0;
}