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authorMike Macgirvin <mike@macgirvin.com>2010-09-08 20:14:17 -0700
committerMike Macgirvin <mike@macgirvin.com>2010-09-08 20:14:17 -0700
commitffb1997902facb36b78a7cfa522f41f2b3d71cda (patch)
treee9fe47acf26c5fd2c742677f2610b60d3008eb26 /library/HTMLPurifier/AttrDef/URI/IPv6.php
parentb49858b038a0a05bbe7685929e88071d0e125538 (diff)
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mistpark 2.0 infrasturcture lands
Diffstat (limited to 'library/HTMLPurifier/AttrDef/URI/IPv6.php')
-rw-r--r--library/HTMLPurifier/AttrDef/URI/IPv6.php99
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