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<?php |
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/** |
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* GpsLab component. |
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* |
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* @author Peter Gribanov <[email protected]> |
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* @copyright Copyright (c) 2016, Peter Gribanov |
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* @license http://opensource.org/licenses/MIT |
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*/ |
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namespace GpsLab\Component\Interval\IPv4Network; |
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use GpsLab\Component\Interval\Exception\InvalidPointTypeException; |
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class IPv4NetworkMask |
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{ |
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/** |
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* @var string |
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*/ |
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const CIDR = '(3[0-2]|[1-2]?[0-9])'; // 0-32 |
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/** |
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* @var string |
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*/ |
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private $ip = ''; |
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/** |
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* @var int |
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*/ |
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private $long = 0; |
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/** |
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* @var int |
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*/ |
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private $cidr = 0; |
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/** |
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* @param string $ip |
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* @param int $cidr |
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*/ |
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private function __construct($ip, $cidr) |
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{ |
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$this->ip = $ip; |
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$this->long = ip2long($ip); |
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$this->cidr = $cidr; |
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} |
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/** |
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* @param string $ip |
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* |
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* @return self |
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*/ |
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public static function fromIP($ip) |
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{ |
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if (filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4) === false) { |
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throw InvalidPointTypeException::point('IPv4', $ip); |
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} |
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// get CIDR from IP mask |
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$mask = ''; |
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foreach (explode('.', $ip) as $octet) { |
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$mask .= str_pad(decbin($octet), 8, '0', STR_PAD_LEFT); |
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} |
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// check mask |
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if (strpos('01', $mask) !== false) { |
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// valid 11111111111111111111111100000000 -> 255.255.255.0 |
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// invalid 11111111111111111111111100000001 -> 255.255.255.1 |
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throw InvalidMaskException::ip($ip); |
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} |
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return new self($ip, substr_count($mask, '1')); |
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} |
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/** |
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* @param int $cidr |
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* |
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* @return self |
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*/ |
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public static function fromCIDR($cidr) |
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{ |
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if ($cidr < 0 || $cidr > 32) { |
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throw InvalidMaskException::cidr($cidr); |
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} |
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// ip2long('255.255.255.255') == -1 |
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return new self(long2ip((-1 << (32 - $cidr)) & -1), $cidr); |
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} |
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/** |
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* @return int |
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*/ |
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public function ip() |
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{ |
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return $this->long; |
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} |
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/** |
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* @return int |
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*/ |
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public function cidr() |
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{ |
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return $this->cidr; |
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} |
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/** |
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* @param IPv4NetworkMask $mask |
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* |
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* @return bool |
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*/ |
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public function equal(IPv4NetworkMask $mask) |
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{ |
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return $this->long == $mask->ip(); |
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} |
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/** |
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* @return string |
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*/ |
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public function __toString() |
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{ |
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return $this->ip; |
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} |
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} |
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gpslab /
interval
