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author | Mike Macgirvin <mike@macgirvin.com> | 2010-09-08 20:14:17 -0700 |
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committer | Mike Macgirvin <mike@macgirvin.com> | 2010-09-08 20:14:17 -0700 |
commit | ffb1997902facb36b78a7cfa522f41f2b3d71cda (patch) | |
tree | e9fe47acf26c5fd2c742677f2610b60d3008eb26 /library/HTMLPurifier/AttrDef/URI/IPv6.php | |
parent | b49858b038a0a05bbe7685929e88071d0e125538 (diff) | |
download | volse-hubzilla-ffb1997902facb36b78a7cfa522f41f2b3d71cda.tar.gz volse-hubzilla-ffb1997902facb36b78a7cfa522f41f2b3d71cda.tar.bz2 volse-hubzilla-ffb1997902facb36b78a7cfa522f41f2b3d71cda.zip |
mistpark 2.0 infrasturcture lands
Diffstat (limited to 'library/HTMLPurifier/AttrDef/URI/IPv6.php')
-rw-r--r-- | library/HTMLPurifier/AttrDef/URI/IPv6.php | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/library/HTMLPurifier/AttrDef/URI/IPv6.php b/library/HTMLPurifier/AttrDef/URI/IPv6.php new file mode 100644 index 000000000..9454e9be5 --- /dev/null +++ b/library/HTMLPurifier/AttrDef/URI/IPv6.php @@ -0,0 +1,99 @@ +<?php + +/** + * Validates an IPv6 address. + * @author Feyd @ forums.devnetwork.net (public domain) + * @note This function requires brackets to have been removed from address + * in URI. + */ +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})'; + $pre = '(?:/(?:12[0-8]|1[0-1][0-9]|[1-9][0-9]|[0-9]))'; // /0 - /128 + + // prefix check + if (strpos($aIP, '/') !== false) + { + if (preg_match('#' . $pre . '$#s', $aIP, $find)) + { + $aIP = substr($aIP, 0, 0-strlen($find[0])); + unset($find); + } + else + { + return false; + } + } + + // IPv4-compatiblity check + 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); + } + + // compression check + $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 ($c != 8) + { + return false; + } + + // All the pieces should be 16-bit hex strings. Are they? + foreach ($aIP as $piece) + { + if (!preg_match('#^[0-9a-fA-F]{4}$#s', sprintf('%04s', $piece))) + { + return false; + } + } + + return $original; + + } + +} + +// vim: et sw=4 sts=4 |