1 files changed, 85 insertions, 0 deletions
diff --git a/lib/Kolab/DAV/TempFilesPlugin.php b/lib/Kolab/DAV/TempFilesPlugin.php
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+++ b/lib/Kolab/DAV/TempFilesPlugin.php
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+<?php
+
+/**
+ * Temporary File Filter Plugin for the Kolab WebDAV service.
+ *
+ * @author Thomas Bruederli <bruederli@kolabsys.com>
+ *
+ * Copyright (C) 2013, Kolab Systems AG <contact@kolabsys.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+namespace Kolab\DAV;
+
+use Sabre\DAV;
+use Kolab\DAV\Auth\HTTPBasic;
+
+/**
+ * Temporary File Filter Plugin
+ *
+ * The purpose of this filter is to intercept some of the garbage files
+ * operation systems and applications tend to generate when mounting
+ * a WebDAV share as a disk.
+ */
+class TempFilesPlugin extends DAV\TemporaryFileFilterPlugin
+{
+    protected $baseDir;
+
+    /**
+     * Creates the plugin.
+     *
+     * @param string $baseDir Temp directoy base path
+     */
+    public function __construct($baseDir)
+    {
+        $this->baseDir = $baseDir;
+    }
+
+    /**
+     * This method returns the directory where the temporary files should be stored.
+     *
+     * @return string
+     */
+    protected function getDataDir()
+    {
+        if (!$this->dataDir) {
+            $this->dataDir = $this->baseDir . '/' . str_replace('@', '_', HTTPBasic::$current_user);
+
+            if (!is_dir($this->dataDir)) {
+                mkdir($this->dataDir);
+            }
+
+            // run a cleanup routine on every 100th request
+            if (rand(0,100) == 100) {
+                $this->cleanup();
+            }
+        }
+
+        return $this->dataDir;
+    }
+
+    /**
+     * Tempfile cleanup routine to remove files not touched for 24 hours
+     */
+    protected function cleanup()
+    {
+        $expires = time() - 86400;
+        foreach (glob($this->dataDir . '/*.tempfile') as $file) {
+            if (filemtime($file) < $expires) {
+                unlink($file);
+            }
+        }
+    }
+}