Version 4.0.13.1

system/Text/HtmlPurifierDefinitionCache.php

@@ -0,0 +1,151 @@
+<?php
+/**
+ * @brief		Definition caching for HTML Purifier not on disk
+ * @author		<a href='http://www.invisionpower.com'>Invision Power Services, Inc.</a>
+ * @copyright	(c) 2001 - SVN_YYYY Invision Power Services, Inc.
+ * @license		http://www.invisionpower.com/legal/standards/
+ * @package		IPS Social Suite
+ * @since		25 Oct 2013
+ * @version		SVN_VERSION_NUMBER
+ */
+
+
+/* To prevent PHP errors (extending class does not exist) revealing path */
+if ( !defined( '\IPS\SUITE_UNIQUE_KEY' ) )
+{
+	header( ( isset( $_SERVER['SERVER_PROTOCOL'] ) ? $_SERVER['SERVER_PROTOCOL'] : 'HTTP/1.0' ) . ' 403 Forbidden' );
+	exit;
+}
+
+/**
+ * Definition caching for HTML Purifier not on disk
+ */
+class HtmlPurifierDefinitionCache extends \HTMLPurifier_DefinitionCache
+{
+	/**
+	 * Adds a definition object to the cache
+	 *
+	 * @param	mixed	$def	Definition to cache
+	 * @param	mixed	$config	HTML Purifier configuration
+	 * @return	bool
+	 */
+	public function add($def, $config)
+	{
+		return $this->set( $def, $config );
+	}
+
+	/**
+	 * Unconditionally saves a definition object to the cache
+	 *
+	 * @param	mixed	$def	Definition to cache
+	 * @param	mixed	$config	HTML Purifier configuration
+	 * @return	bool
+	 */
+	public function set($def, $config)
+	{
+		/* If invalid type, just return */
+		if( !$this->checkDefType( $def ) )
+		{
+			return;
+		}
+
+		/* Generate key and store it */
+		$key	= $this->generateKey( $config );
+
+		\IPS\Data\Store::i()->$key	= base64_encode( \serialize( $def ) );
+
+		/* Store an array of all keys so we can implement flush() and cleanup() */
+		$currentKeys			= \IPS\Data\Store::i()->htmlpurifier_definitions;
+		$currentKeys[ $key ]	= $key;
+
+		\IPS\Data\Store::i()->htmlpurifier_definitions	= $currentKeys;
+
+		/* Return TRUE */
+		return TRUE;
+	}
+
+	/**
+	 * Replace an object in the cache
+	 *
+	 * @param	mixed	$def	Definition to cache
+	 * @param	mixed	$config	HTML Purifier configuration
+	 * @return	bool
+	 */
+	public function replace($def, $config)
+	{
+		return $this->set( $def, $config );
+	}
+
+	/**
+	 * Retrieves a definition object from the cache
+	 *
+	 * @param	mixed	$config	HTML Purifier configuration
+	 * @return	mixed	FALSE if not found, or the definition object
+	 */
+	public function get($config)
+	{
+		$key	= $this->generateKey( $config );
+
+		if( isset( \IPS\Data\Store::i()->$key ) and \IPS\Data\Store::i()->$key !== 0 )
+		{
+			return \unserialize( base64_decode( \IPS\Data\Store::i()->$key ) );
+		}
+		else
+		{
+			return FALSE;
+		}
+	}
+
+	/**
+	 * Removes a definition object to the cache
+	 *
+	 * @param	mixed	$config	HTML Purifier configuration
+	 * @return	bool
+	 */
+	public function remove($config)
+	{
+		$key	= $this->generateKey( $config );
+
+		if( isset( \IPS\Data\Store::i()->$key ) )
+		{
+			unset( \IPS\Data\Store::i()->$key );
+		}
+
+		return TRUE;
+	}
+
+	/**
+	 * Clears all objects from cache
+	 *
+	 * @param	mixed	$config	HTML Purifier configuration
+	 * @return	void
+	 */
+	public function flush($config)
+	{
+		if( !isset( \IPS\Data\Store::i()->htmlpurifier_definitions ) )
+		{
+			\IPS\Data\Store::i()->htmlpurifier_definitions	= array();
+		}
+
+		foreach( \IPS\Data\Store::i()->htmlpurifier_definitions as $key )
+		{
+			if( isset( \IPS\Data\Store::i()->$key ) )
+			{
+				unset( \IPS\Data\Store::i()->$key );
+			}
+		}
+
+		return;
+	}
+
+	/**
+	 * Clears all expired (older version or revision) objects from cache
+	 *
+	 * @param	mixed	$config	HTML Purifier configuration
+	 * @return	void
+	 */
+	public function cleanup($config)
+	{
+		return $this->flush( $config );
+	}
+}