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authorfriendica <info@friendica.com>2012-05-12 17:57:41 -0700
committerfriendica <info@friendica.com>2012-07-18 20:40:31 +1000
commit7a40f4354b32809af3d0cfd6e3af0eda02ab0e0a (patch)
treea9c3d91209cff770bb4b613b1b95e61a7bbc5a2b /lib/htmlpurifier/library/HTMLPurifier/AttrDef/URI/IPv4.php
parentcd727cb26b78a1dade09d510b071446898477356 (diff)
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some important stuff we'll need
Diffstat (limited to 'lib/htmlpurifier/library/HTMLPurifier/AttrDef/URI/IPv4.php')
-rw-r--r--lib/htmlpurifier/library/HTMLPurifier/AttrDef/URI/IPv4.php39
1 files changed, 39 insertions, 0 deletions
diff --git a/lib/htmlpurifier/library/HTMLPurifier/AttrDef/URI/IPv4.php b/lib/htmlpurifier/library/HTMLPurifier/AttrDef/URI/IPv4.php
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index 000000000..ec4cf591b
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+++ b/lib/htmlpurifier/library/HTMLPurifier/AttrDef/URI/IPv4.php
@@ -0,0 +1,39 @@
+<?php
+
+/**
+ * Validates an IPv4 address
+ * @author Feyd @ forums.devnetwork.net (public domain)
+ */
+class HTMLPurifier_AttrDef_URI_IPv4 extends HTMLPurifier_AttrDef
+{
+
+ /**
+ * IPv4 regex, protected so that IPv6 can reuse it
+ */
+ protected $ip4;
+
+ public function validate($aIP, $config, $context) {
+
+ if (!$this->ip4) $this->_loadRegex();
+
+ if (preg_match('#^' . $this->ip4 . '$#s', $aIP))
+ {
+ return $aIP;
+ }
+
+ return false;
+
+ }
+
+ /**
+ * Lazy load function to prevent regex from being stuffed in
+ * cache.
+ */
+ protected function _loadRegex() {
+ $oct = '(?:25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9][0-9]|[0-9])'; // 0-255
+ $this->ip4 = "(?:{$oct}\\.{$oct}\\.{$oct}\\.{$oct})";
+ }
+
+}
+
+// vim: et sw=4 sts=4