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/*
* $Id$
*
* Functions that process IPOPS message
*
* Copyright (C) 2012 Hugh Waite (crocodile-rcs.com)
*
* 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
*
*/
#include <stdio.h>
#include "api.h"
#include "ip_parser.h"
extern int _compare_ips(char*, size_t, enum enum_ip_type, char*, size_t, enum enum_ip_type);
extern int _ip_is_in_subnet(char *ip1, size_t len1, enum enum_ip_type ip1_type, char *ip2, size_t len2, enum enum_ip_type ip2_type, int netmask);
/**
*
*/
int ipopsapi_compare_ips(const str *const ip1, const str *const ip2)
{
str string1 = *ip1;
str string2 = *ip2;
enum enum_ip_type ip1_type, ip2_type;
switch(ip1_type = ip_parser_execute(string1.s, string1.len)) {
case(ip_type_error):
return -1;
break;
case(ip_type_ipv6_reference):
string1.s += 1;
string1.len -= 2;
ip1_type = ip_type_ipv6;
break;
default:
break;
}
switch(ip2_type = ip_parser_execute(string2.s, string2.len)) {
case(ip_type_error):
return -1;
break;
case(ip_type_ipv6_reference):
string2.s += 1;
string2.len -= 2;
ip2_type = ip_type_ipv6;
break;
default:
break;
}
if (_compare_ips(string1.s, string1.len, ip1_type, string2.s, string2.len, ip2_type))
return 1;
else
return -1;
}
/**
*
*/
int ipopsapi_ip_is_in_subnet(const str *const ip1, const str *const ip2)
{
str string1 = *ip1;
str string2 = *ip2;
enum enum_ip_type ip1_type, ip2_type;
char *cidr_pos = NULL;
int netmask = 0;
switch(ip1_type = ip_parser_execute(string1.s, string1.len)) {
case(ip_type_error):
return -1;
break;
case(ip_type_ipv6_reference):
return -1;
break;
default:
break;
}
cidr_pos = string2.s + string2.len - 1;
while (cidr_pos > string2.s)
{
if (*cidr_pos == '/') break;
cidr_pos--;
}
if (cidr_pos == string2.s) return -1;
string2.len = (cidr_pos - string2.s);
netmask = atoi(cidr_pos+1);
switch(ip2_type = ip_parser_execute(string2.s, string2.len)) {
case(ip_type_error):
return -1;
break;
case(ip_type_ipv6_reference):
return -1;
break;
default:
break;
}
if (_ip_is_in_subnet(string1.s, string1.len, ip1_type, string2.s, string2.len, ip2_type, netmask))
return 1;
else
return -1;
}
/**
*
*/
int ipopsapi_is_ip(const str * const ip)
{
if (ip_parser_execute(ip->s, ip->len) != ip_type_error)
return 1;
else
return -1;
}
/**
*
*/
int bind_ipops(ipops_api_t* api)
{
if (!api) {
ERR("Invalid parameter value\n");
return -1;
}
api->compare_ips = ipopsapi_compare_ips;
api->ip_is_in_subnet = ipopsapi_ip_is_in_subnet;
api->is_ip = ipopsapi_is_ip;
return 0;
}
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