inital commit

webroot/forum/inc/cachehandlers/disk.php

@@ -0,0 +1,126 @@
+<?php
+/**
+ * MyBB 1.8
+ * Copyright 2014 MyBB Group, All Rights Reserved
+ *
+ * Website: http://www.mybb.com
+ * License: http://www.mybb.com/about/license
+ *
+ */
+
+/**
+ * Disk Cache Handler
+ */
+class diskCacheHandler implements CacheHandlerInterface
+{
+	/**
+	 * Connect and initialize this handler.
+	 *
+	 * @return boolean True if successful, false on failure
+	 */
+	function connect()
+	{
+		if(!@is_writable(MYBB_ROOT."cache"))
+		{
+			return false;
+		}
+
+		return true;
+	}
+
+	/**
+	 * Retrieve an item from the cache.
+	 *
+	 * @param string $name The name of the cache
+	 * @return mixed Cache data if successful, false if failure
+	 */
+	function fetch($name)
+	{
+		if(!@file_exists(MYBB_ROOT."/cache/{$name}.php"))
+		{
+			return false;
+		}
+
+		@include(MYBB_ROOT."/cache/{$name}.php");
+
+		// Return data
+		return $$name;
+	}
+
+	/**
+	 * Write an item to the cache.
+	 *
+	 * @param string $name The name of the cache
+	 * @param mixed $contents The data to write to the cache item
+	 * @return boolean True on success, false on failure
+	 */
+	function put($name, $contents)
+	{
+		global $mybb;
+		if(!is_writable(MYBB_ROOT."cache"))
+		{
+			$mybb->trigger_generic_error("cache_no_write");
+			return false;
+		}
+
+		$cache_file = fopen(MYBB_ROOT."cache/{$name}.php", "w") or $mybb->trigger_generic_error("cache_no_write");
+		flock($cache_file, LOCK_EX);
+		$cache_contents = "<?php\ndeclare(encoding='UTF-8');\n\n/** MyBB Generated Cache - Do Not Alter\n * Cache Name: $name\n * Generated: ".gmdate("r")."\n*/\n\n";
+		$cache_contents .= "\$$name = ".var_export($contents, true).";\n\n?>";
+		fwrite($cache_file, $cache_contents);
+		flock($cache_file, LOCK_UN);
+		fclose($cache_file);
+
+		return true;
+	}
+
+	/**
+	 * Delete a cache
+	 *
+	 * @param string $name The name of the cache
+	 * @return boolean True on success, false on failure
+	 */
+	function delete($name)
+	{
+		return @unlink(MYBB_ROOT."/cache/{$name}.php");
+	}
+
+	/**
+	 * Disconnect from the cache
+	 *
+	 * @return bool
+	 */
+	function disconnect()
+	{
+		return true;
+	}
+
+	/**
+	 * Select the size of the disk cache
+	 *
+	 * @param string $name The name of the cache
+	 * @return integer the size of the disk cache
+	 */
+	function size_of($name='')
+	{
+		if($name != '')
+		{
+			return @filesize(MYBB_ROOT."/cache/{$name}.php");
+		}
+		else
+		{
+			$total = 0;
+			$dir = opendir(MYBB_ROOT."/cache");
+			while(($file = readdir($dir)) !== false)
+			{
+				if($file == "." || $file == ".." || $file == ".svn" || !is_file(MYBB_ROOT."/cache/{$file}"))
+				{
+					continue;
+				}
+
+				$total += filesize(MYBB_ROOT."/cache/{$file}");
+			}
+			return $total;
+		}
+	}
+}