projects / github / wallabag / wallabag.git / blame
| Commit | Line | Data |
|---|---|---|
| d4949327 NL |
1 | <?php\r |
| 2 | \r | |
| 3 | /**\r | |
| 4 | * Validates an IPv6 address.\r | |
| 5 | * @author Feyd @ forums.devnetwork.net (public domain)\r | |
| 6 | * @note This function requires brackets to have been removed from address\r | |
| 7 | * in URI.\r | |
| 8 | */\r | |
| 9 | class HTMLPurifier_AttrDef_URI_IPv6 extends HTMLPurifier_AttrDef_URI_IPv4\r | |
| 10 | {\r | |
| 11 | \r | |
| 12 | /**\r | |
| 13 | * @param string $aIP\r | |
| 14 | * @param HTMLPurifier_Config $config\r | |
| 15 | * @param HTMLPurifier_Context $context\r | |
| 16 | * @return bool|string\r | |
| 17 | */\r | |
| 18 | public function validate($aIP, $config, $context)\r | |
| 19 | {\r | |
| 20 | if (!$this->ip4) {\r | |
| 21 | $this->_loadRegex();\r | |
| 22 | }\r | |
| 23 | \r | |
| 24 | $original = $aIP;\r | |
| 25 | \r | |
| 26 | $hex = '[0-9a-fA-F]';\r | |
| 27 | $blk = '(?:' . $hex . '{1,4})';\r | |
| 28 | $pre = '(?:/(?:12[0-8]|1[0-1][0-9]|[1-9][0-9]|[0-9]))'; // /0 - /128\r | |
| 29 | \r | |
| 30 | // prefix check\r | |
| 31 | if (strpos($aIP, '/') !== false) {\r | |
| 32 | if (preg_match('#' . $pre . '$#s', $aIP, $find)) {\r | |
| 33 | $aIP = substr($aIP, 0, 0 - strlen($find[0]));\r | |
| 34 | unset($find);\r | |
| 35 | } else {\r | |
| 36 | return false;\r | |
| 37 | }\r | |
| 38 | }\r | |
| 39 | \r | |
| 40 | // IPv4-compatiblity check\r | |
| 41 | if (preg_match('#(?<=:' . ')' . $this->ip4 . '$#s', $aIP, $find)) {\r | |
| 42 | $aIP = substr($aIP, 0, 0 - strlen($find[0]));\r | |
| 43 | $ip = explode('.', $find[0]);\r | |
| 44 | $ip = array_map('dechex', $ip);\r | |
| 45 | $aIP .= $ip[0] . $ip[1] . ':' . $ip[2] . $ip[3];\r | |
| 46 | unset($find, $ip);\r | |
| 47 | }\r | |
| 48 | \r | |
| 49 | // compression check\r | |
| 50 | $aIP = explode('::', $aIP);\r | |
| 51 | $c = count($aIP);\r | |
| 52 | if ($c > 2) {\r | |
| 53 | return false;\r | |
| 54 | } elseif ($c == 2) {\r | |
| 55 | list($first, $second) = $aIP;\r | |
| 56 | $first = explode(':', $first);\r | |
| 57 | $second = explode(':', $second);\r | |
| 58 | \r | |
| 59 | if (count($first) + count($second) > 8) {\r | |
| 60 | return false;\r | |
| 61 | }\r | |
| 62 | \r | |
| 63 | while (count($first) < 8) {\r | |
| 64 | array_push($first, '0');\r | |
| 65 | }\r | |
| 66 | \r | |
| 67 | array_splice($first, 8 - count($second), 8, $second);\r | |
| 68 | $aIP = $first;\r | |
| 69 | unset($first, $second);\r | |
| 70 | } else {\r | |
| 71 | $aIP = explode(':', $aIP[0]);\r | |
| 72 | }\r | |
| 73 | $c = count($aIP);\r | |
| 74 | \r | |
| 75 | if ($c != 8) {\r | |
| 76 | return false;\r | |
| 77 | }\r | |
| 78 | \r | |
| 79 | // All the pieces should be 16-bit hex strings. Are they?\r | |
| 80 | foreach ($aIP as $piece) {\r | |
| 81 | if (!preg_match('#^[0-9a-fA-F]{4}$#s', sprintf('%04s', $piece))) {\r | |
| 82 | return false;\r | |
| 83 | }\r | |
| 84 | }\r | |
| 85 | return $original;\r | |
| 86 | }\r | |
| 87 | }\r | |
| 88 | \r | |
| 89 | // vim: et sw=4 sts=4\r |