mirror of
https://github.com/librenms/librenms.git
synced 2024-10-07 16:52:45 +00:00
88b4e31912
* bgp-peers update Use IP parsing library more effectively. Fix update issue Include comware bgp-peers test data deeper refactoring Allow JunOS fallback to BGP4-MIB, some models only use that. Add junos bgp4 data Actually update all bpg data in the poller * fix arista data. refactor some to prevent missing data from mucking things up * refactor to use $oid_map for BGP4-MIB too * A few comments to break up teh file a bit * Junos bgp data an a quick revert for now. * small cleanup * fix ios bgp polling, add test data * check the correct variable
133 lines
3.5 KiB
PHP
133 lines
3.5 KiB
PHP
<?php
|
|
/**
|
|
* IPv4.php
|
|
*
|
|
* -Description-
|
|
*
|
|
* This program 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 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program 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, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
* @package LibreNMS
|
|
* @link http://librenms.org
|
|
* @copyright 2017 Tony Murray
|
|
* @author Tony Murray <murraytony@gmail.com>
|
|
*/
|
|
|
|
namespace LibreNMS\Util;
|
|
|
|
use LibreNMS\Exceptions\InvalidIpException;
|
|
|
|
class IPv4 extends IP
|
|
{
|
|
/**
|
|
* IPv4 constructor.
|
|
* @param $ipv4
|
|
* @throws InvalidIpException
|
|
*/
|
|
public function __construct($ipv4)
|
|
{
|
|
$this->host_bits = 32;
|
|
list($this->ip, $this->cidr) = $this->extractCidr($ipv4);
|
|
|
|
if (!self::isValid($this->ip)) {
|
|
throw new InvalidIpException("$ipv4 is not a valid ipv4 address");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Check if the supplied IP is valid.
|
|
* @param string $ipv4
|
|
* @param bool $exclude_reserved Exclude reserved IP ranges.
|
|
* @return bool
|
|
*/
|
|
public static function isValid($ipv4, $exclude_reserved = false)
|
|
{
|
|
$filter = FILTER_FLAG_IPV4;
|
|
if ($exclude_reserved) {
|
|
$filter |= FILTER_FLAG_NO_RES_RANGE;
|
|
}
|
|
|
|
return filter_var($ipv4, FILTER_VALIDATE_IP, $filter) !== false;
|
|
}
|
|
|
|
/**
|
|
* Convert an IPv4 network mask to a bit mask. For example: 255.255.255.0 -> 24
|
|
* @param string $netmask
|
|
* @return int
|
|
*/
|
|
public static function netmask2cidr($netmask)
|
|
{
|
|
$long = ip2long($netmask);
|
|
$base = ip2long('255.255.255.255');
|
|
return (int)(32 - log(($long ^ $base) + 1, 2));
|
|
}
|
|
|
|
/**
|
|
* Returns the netmask of this IP address. For example: 255.255.255.0
|
|
* @return string
|
|
*/
|
|
public function getNetmask()
|
|
{
|
|
return long2ip($this->cidr2long($this->cidr));
|
|
}
|
|
|
|
/**
|
|
* Convert an IPv4 bit mask to a long. Generally used with long2ip() or bitwise operations.
|
|
* @return int
|
|
*/
|
|
private function cidr2long($cidr)
|
|
{
|
|
return -1 << (32 - (int)$cidr);
|
|
}
|
|
|
|
/**
|
|
* Check if this IP address is contained inside the network.
|
|
* @param string $network should be in cidr format.
|
|
* @return mixed
|
|
*/
|
|
public function inNetwork($network)
|
|
{
|
|
list($net, $cidr) = $this->extractCidr($network);
|
|
if (!self::isValid($net)) {
|
|
return false;
|
|
}
|
|
|
|
$mask = $this->cidr2long($cidr);
|
|
return ((ip2long($this->ip) & $mask) == (ip2long($net) & $mask));
|
|
}
|
|
|
|
/**
|
|
* Get the network address of this IP
|
|
* @param int $cidr if not given will use the cidr stored with this IP
|
|
* @return string
|
|
*/
|
|
public function getNetworkAddress($cidr = null)
|
|
{
|
|
if (is_null($cidr)) {
|
|
$cidr = $this->cidr;
|
|
}
|
|
|
|
return long2ip(ip2long($this->ip) & $this->cidr2long($cidr));
|
|
}
|
|
|
|
/**
|
|
* Convert this IP to an snmp index hex encoded
|
|
*
|
|
* @return string
|
|
*/
|
|
public function toSnmpIndex()
|
|
{
|
|
return (string)$this->ip;
|
|
}
|
|
}
|