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<?php |
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/** |
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* League.Uri (http://uri.thephpleague.com) |
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* |
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* @package League.uri |
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* @author Ignace Nyamagana Butera <[email protected]> |
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* @copyright 2013-2015 Ignace Nyamagana Butera |
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* @license https://github.com/thephpleague/uri/blob/master/LICENSE (MIT License) |
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* @version 4.1.0 |
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* @link https://github.com/thephpleague/uri/ |
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*/ |
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namespace League\Uri\Components; |
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/** |
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* A Trait to validate a IP type Host |
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* |
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* @package League.uri |
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* @author Ignace Nyamagana Butera <[email protected]> |
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* @since 4.0.0 |
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*/ |
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trait HostIpTrait |
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{ |
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/** |
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* Is the Host an IPv4 |
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* |
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* @var bool |
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*/ |
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protected $hostAsIpv4 = false; |
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/** |
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* Is the Host an IPv6 |
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* |
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* @var bool |
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*/ |
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protected $hostAsIpv6 = false; |
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/** |
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* Tell whether the IP has a zone Identifier |
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* |
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* @var bool |
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*/ |
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protected $hasZoneIdentifier = false; |
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/** |
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* IPv6 Local Link binary-like prefix |
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* |
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* @var string |
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*/ |
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protected static $local_link_prefix = '1111111010'; |
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/** |
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* Validate a Host as an IP |
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* |
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* @param string $str |
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* |
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* @return array |
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*/ |
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protected function validateIpHost($str) |
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{ |
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$res = $this->filterIpv6Host($str); |
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if (is_string($res)) { |
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$this->hostAsIpv4 = false; |
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$this->hostAsIpv6 = true; |
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return [$res]; |
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} |
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if (filter_var($str, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4)) { |
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$this->hostAsIpv4 = true; |
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$this->hostAsIpv6 = false; |
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return [$str]; |
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} |
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return []; |
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} |
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/** |
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* validate and filter a Ipv6 Hostname |
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* |
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* @param string $str |
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* |
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* @return string|false |
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*/ |
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protected function filterIpv6Host($str) |
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{ |
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preg_match(',^(?P<ldelim>[\[]?)(?P<ipv6>.*?)(?P<rdelim>[\]]?)$,', $str, $matches); |
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if (!in_array(strlen($matches['ldelim'].$matches['rdelim']), [0, 2])) { |
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return false; |
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604 |
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} |
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604 |
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if (false === strpos($str, '%')) { |
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return filter_var($matches['ipv6'], FILTER_VALIDATE_IP, FILTER_FLAG_IPV6); |
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} |
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return $this->validateScopedIpv6($matches['ipv6']); |
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} |
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/** |
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* Scope Ip validation according to RFC6874 rules |
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* |
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* @see http://tools.ietf.org/html/rfc6874#section-2 |
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* @see http://tools.ietf.org/html/rfc6874#section-4 |
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* |
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* @param string $ip The ip to validate |
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* |
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* @return string |
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*/ |
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protected function validateScopedIpv6($ip) |
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{ |
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$pos = strpos($ip, '%'); |
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if (preg_match(',[^\x20-\x7f]|[?#@\[\]],', rawurldecode(substr($ip, $pos)))) { |
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return false; |
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} |
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$ipv6 = substr($ip, 0, $pos); |
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if (!$this->isLocalLink($ipv6)) { |
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return false; |
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604 |
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} |
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604 |
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$this->hasZoneIdentifier = true; |
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return strtolower(rawurldecode($ip)); |
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} |
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586 |
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/** |
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* Tell whether the submitted string is a local link IPv6 |
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* |
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* @param string $ipv6 |
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* |
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* @return bool |
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*/ |
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protected function isLocalLink($ipv6) |
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{ |
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if (!filter_var($ipv6, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6)) { |
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return false; |
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} |
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$convert = function ($carry, $char) { |
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return $carry.str_pad(decbin(ord($char)), 8, '0', STR_PAD_LEFT); |
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}; |
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$res = array_reduce(str_split(unpack('A16', inet_pton($ipv6))[1]), $convert, ''); |
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return substr($res, 0, 10) === self::$local_link_prefix; |
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} |
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/** |
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* Format an IP for string representation of the Host |
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* |
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* @param string $ip_address IP address |
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* |
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* @return string |
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*/ |
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protected function formatIp($ip_address) |
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{ |
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$tmp = explode('%', $ip_address); |
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if (isset($tmp[1])) { |
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$ip_address = $tmp[0].'%25'.rawurlencode($tmp[1]); |
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} |
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if ($this->hostAsIpv6) { |
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return "[$ip_address]"; |
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} |
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return $ip_address; |
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} |
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} |
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thephpleague /
uri
