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-rw-r--r--vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/URI/IPv4.php45
1 files changed, 45 insertions, 0 deletions
diff --git a/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/URI/IPv4.php b/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/URI/IPv4.php
new file mode 100644
index 000000000..30ac16c9e
--- /dev/null
+++ b/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/URI/IPv4.php
@@ -0,0 +1,45 @@
+<?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.
+ * @type string
+ */
+ protected $ip4;
+
+ /**
+ * @param string $aIP
+ * @param HTMLPurifier_Config $config
+ * @param HTMLPurifier_Context $context
+ * @return bool|string
+ */
+ public function validate($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