1 files changed, 106 insertions, 0 deletions
diff --git a/lib/private/cache/fileglobal.php b/lib/private/cache/fileglobal.php
new file mode 100644
index 00000000000..bd049bba4d0
--- /dev/null
+++ b/lib/private/cache/fileglobal.php
@@ -0,0 +1,106 @@
+<?php
+/**
+ * Copyright (c) 2012 Bart Visscher <bartv@thisnet.nl>
+ * This file is licensed under the Affero General Public License version 3 or
+ * later.
+ * See the COPYING-README file.
+ */
+
+namespace OC\Cache;
+
+class FileGlobal {
+	static protected function getCacheDir() {
+		$cache_dir = get_temp_dir().'/owncloud-' . \OC_Util::getInstanceId().'/';
+		if (!is_dir($cache_dir)) {
+			mkdir($cache_dir);
+		}
+		return $cache_dir;
+	}
+
+	protected function fixKey($key) {
+		return str_replace('/', '_', $key);
+	}
+
+	public function get($key) {
+		$key = $this->fixKey($key);
+		if ($this->hasKey($key)) {
+			$cache_dir = self::getCacheDir();
+			return file_get_contents($cache_dir.$key);
+		}
+		return null;
+	}
+
+	public function set($key, $value, $ttl=0) {
+		$key = $this->fixKey($key);
+		$cache_dir = self::getCacheDir();
+		if ($cache_dir and file_put_contents($cache_dir.$key, $value)) {
+			if ($ttl === 0) {
+				$ttl = 86400; // 60*60*24
+			}
+			return touch($cache_dir.$key, time() + $ttl);
+		}
+		return false;
+	}
+
+	public function hasKey($key) {
+		$key = $this->fixKey($key);
+		$cache_dir = self::getCacheDir();
+		if ($cache_dir && is_file($cache_dir.$key)) {
+			$mtime = filemtime($cache_dir.$key);
+			if ($mtime < time()) {
+				unlink($cache_dir.$key);
+				return false;
+			}
+			return true;
+		}
+		return false;
+	}
+
+	public function remove($key) {
+		$cache_dir = self::getCacheDir();
+		if(!$cache_dir) {
+			return false;
+		}
+		$key = $this->fixKey($key);
+		return unlink($cache_dir.$key);
+	}
+
+	public function clear($prefix='') {
+		$cache_dir = self::getCacheDir();
+		$prefix = $this->fixKey($prefix);
+		if($cache_dir and is_dir($cache_dir)) {
+			$dh=opendir($cache_dir);
+			if(is_resource($dh)) {
+				while (($file = readdir($dh)) !== false) {
+					if($file!='.' and $file!='..' and ($prefix==='' || strpos($file, $prefix) === 0)) {
+						unlink($cache_dir.$file);
+					}
+				}
+			}
+		}
+	}
+
+	static public function gc() {
+		$last_run = \OC_AppConfig::getValue('core', 'global_cache_gc_lastrun', 0);
+		$now = time();
+		if (($now - $last_run) < 300) {
+			// only do cleanup every 5 minutes
+			return;
+		}
+		\OC_AppConfig::setValue('core', 'global_cache_gc_lastrun', $now);
+		$cache_dir = self::getCacheDir();
+		if($cache_dir and is_dir($cache_dir)) {
+			$dh=opendir($cache_dir);
+			if(is_resource($dh)) {
+				while (($file = readdir($dh)) !== false) {
+					if($file!='.' and $file!='..') {
+						$mtime = filemtime($cache_dir.$file);
+						if ($mtime < $now) {
+							unlink($cache_dir.$file);
+						}
+					}
+				}
+			}
+		}
+	}
+}