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<?php |
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/* |
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* The MIT License (MIT) |
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* |
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* Copyright (c) 2014-2015 Spomky-Labs |
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* |
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* This software may be modified and distributed under the terms |
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* of the MIT license. See the LICENSE file for details. |
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*/ |
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namespace SpomkyLabs\IpFilterBundle\Tool; |
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class Network |
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{ |
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public static function getRange($network) |
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{ |
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try { |
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list($ip, $cidr) = explode('/', $network); |
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} catch (\Exception $e) { |
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throw new \Exception('Invalid IP/CIDR combination supplied'); |
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} |
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if (filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4)) { |
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return self::getIPv4Range($ip, $cidr); |
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} |
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if (filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6)) { |
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return self::getIPv6Range($ip, $cidr); |
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} |
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throw new \Exception('Invalid IP/CIDR combination supplied'); |
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} |
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protected static function getIPv4Range($ip, $cidr) |
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{ |
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if ($cidr < 0 || $cidr > 32) { |
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throw new \Exception('Invalid network, IPv4 CIDR must be between 0 and 32.'); |
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} |
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$ipLong = ip2long($ip); |
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$ipMaskLong = bindec(str_repeat('1', $cidr).str_repeat('0', 32 - $cidr)); |
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$network = $ipLong & $ipMaskLong; |
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$broadcast = $ipLong | ~$ipMaskLong; |
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return [ |
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'start' => long2ip($network + 1), |
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'end' => long2ip($broadcast - 1), |
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'network' => long2ip($network), |
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'mask' => long2ip($ipMaskLong), |
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'broadcast' => long2ip($broadcast), |
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]; |
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} |
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protected static function getIPv6Range($ip, $cidr) |
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{ |
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if ($cidr < 0 || $cidr > 128) { |
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throw new \Exception('Invalid network, IPv6 CIDR must be between 0 and 128.'); |
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} |
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$hosts = 128 - $cidr; |
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$networks = 128 - $hosts; |
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$_m = str_repeat('1', $networks).str_repeat('0', $hosts); |
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$_hexMask = ''; |
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foreach (str_split($_m, 4) as $segment) { |
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$_hexMask .= base_convert($segment, 2, 16); |
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} |
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$mask = substr(preg_replace('/([A-f0-9]{4})/', '$1:', $_hexMask), 0, -1); |
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$ip_bin = inet_pton($ip); |
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$mask_bin = inet_pton($mask); |
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$network = $ip_bin & $mask_bin; |
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$broadcast = $ip_bin | ~$mask_bin; |
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return [ |
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'start' => self::convertBinaryToPrintable($network), |
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'end' => self::convertBinaryToPrintable($broadcast), |
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]; |
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} |
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/** |
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* @param string $str |
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*/ |
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protected static function convertBinaryToPrintable($str) |
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{ |
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return inet_ntop(pack('A'.strlen($str), $str)); |
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} |
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} |
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Spomky-Labs /
IpFilterBundle
