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<?php |
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/* |
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* This file is part of Respect/Validation. |
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* |
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* (c) Alexandre Gomes Gaigalas <[email protected]> |
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* |
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* For the full copyright and license information, please view the "LICENSE.md" |
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* file that was distributed with this source code. |
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*/ |
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namespace Respect\Validation\Rules; |
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use Respect\Validation\Exceptions\ComponentException; |
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class Ip extends AbstractRule |
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{ |
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public $ipOptions; |
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public $networkRange; |
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public function __construct($ipOptions = null) |
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{ |
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if (is_int($ipOptions)) { |
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$this->ipOptions = $ipOptions; |
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return; |
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} |
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$this->networkRange = $this->parseRange($ipOptions); |
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} |
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protected function parseRange($input) |
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{ |
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if ($input === null || $input == '*' || $input == '*.*.*.*' |
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|| $input == '0.0.0.0-255.255.255.255') { |
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return; |
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} |
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$range = ['min' => null, 'max' => null, 'mask' => null]; |
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if (mb_strpos($input, '-') !== false) { |
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list($range['min'], $range['max']) = explode('-', $input); |
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} elseif (mb_strpos($input, '*') !== false) { |
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$this->parseRangeUsingWildcards($input, $range); |
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} elseif (mb_strpos($input, '/') !== false) { |
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$this->parseRangeUsingCidr($input, $range); |
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} else { |
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throw new ComponentException('Invalid network range'); |
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} |
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if (!$this->verifyAddress($range['min'])) { |
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throw new ComponentException('Invalid network range'); |
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} |
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if (isset($range['max']) && !$this->verifyAddress($range['max'])) { |
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throw new ComponentException('Invalid network range'); |
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} |
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return $range; |
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} |
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protected function fillAddress(&$input, $char = '*') |
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{ |
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while (mb_substr_count($input, '.') < 3) { |
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$input .= '.'.$char; |
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} |
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} |
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protected function parseRangeUsingWildcards($input, &$range) |
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{ |
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$this->fillAddress($input); |
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$range['min'] = strtr($input, '*', '0'); |
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$range['max'] = str_replace('*', '255', $input); |
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} |
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protected function parseRangeUsingCidr($input, &$range) |
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{ |
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$input = explode('/', $input); |
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$this->fillAddress($input[0], '0'); |
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$range['min'] = $input[0]; |
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$isAddressMask = mb_strpos($input[1], '.') !== false; |
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if ($isAddressMask && $this->verifyAddress($input[1])) { |
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$range['mask'] = sprintf('%032b', ip2long($input[1])); |
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return; |
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} |
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if ($isAddressMask || $input[1] < 8 || $input[1] > 30) { |
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throw new ComponentException('Invalid network mask'); |
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} |
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$range['mask'] = sprintf('%032b', ip2long(long2ip(~(pow(2, (32 - $input[1])) - 1)))); |
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} |
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public function validate($input) |
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{ |
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return $this->verifyAddress($input) && $this->verifyNetwork($input); |
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} |
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protected function verifyAddress($address) |
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{ |
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return (bool) filter_var( |
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$address, |
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FILTER_VALIDATE_IP, |
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[ |
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'flags' => $this->ipOptions, |
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] |
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); |
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} |
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protected function verifyNetwork($input) |
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{ |
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if ($this->networkRange === null) { |
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return true; |
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} |
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if (isset($this->networkRange['mask'])) { |
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return $this->belongsToSubnet($input); |
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} |
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$input = sprintf('%u', ip2long($input)); |
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return bccomp($input, sprintf('%u', ip2long($this->networkRange['min']))) >= 0 |
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&& bccomp($input, sprintf('%u', ip2long($this->networkRange['max']))) <= 0; |
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} |
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protected function belongsToSubnet($input) |
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{ |
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$range = $this->networkRange; |
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$min = sprintf('%032b', ip2long($range['min'])); |
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$input = sprintf('%032b', ip2long($input)); |
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return ($input & $range['mask']) === ($min & $range['mask']); |
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} |
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} |
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Respect /
Validation
