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- <?php
-
-
- class HTMLPurifier_AttrDef_URI_IPv6 extends HTMLPurifier_AttrDef_URI_IPv4
- {
-
-
-
- public function validate($aIP, $config, $context)
- {
- if (!$this->ip4) {
- $this->_loadRegex();
- }
-
- $original = $aIP;
-
- $hex = '[0-9a-fA-F]';
- $blk = '(?:' . $hex . '{1,4})';
- $pre = '(?:/(?:12[0-8]|1[0-1][0-9]|[1-9][0-9]|[0-9]))';
-
-
- if (strpos($aIP, '/') !== false) {
- if (preg_match('#' . $pre . '$#s', $aIP, $find)) {
- $aIP = substr($aIP, 0, 0 - strlen($find[0]));
- unset($find);
- } else {
- return false;
- }
- }
-
-
- if (preg_match('#(?<=:' . ')' . $this->ip4 . '$#s', $aIP, $find)) {
- $aIP = substr($aIP, 0, 0 - strlen($find[0]));
- $ip = explode('.', $find[0]);
- $ip = array_map('dechex', $ip);
- $aIP .= $ip[0] . $ip[1] . ':' . $ip[2] . $ip[3];
- unset($find, $ip);
- }
-
-
- $aIP = explode('::', $aIP);
- $c = count($aIP);
- if ($c > 2) {
- return false;
- } elseif ($c == 2) {
- list($first, $second) = $aIP;
- $first = explode(':', $first);
- $second = explode(':', $second);
-
- if (count($first) + count($second) > 8) {
- return false;
- }
-
- while (count($first) < 8) {
- array_push($first, '0');
- }
-
- array_splice($first, 8 - count($second), 8, $second);
- $aIP = $first;
- unset($first, $second);
- } else {
- $aIP = explode(':', $aIP[0]);
- }
- $c = count($aIP);
-
- if ($c != 8) {
- return false;
- }
-
-
- foreach ($aIP as $piece) {
- if (!preg_match('#^[0-9a-fA-F]{4}$#s', sprintf('%04s', $piece))) {
- return false;
- }
- }
- return $original;
- }
- }
-
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