Return a correct timestamp when a folder is empty.

If a folder was empty a zero timestamp was returned. Now it will
return the timestamp of the folder itself.

include/reddav.php

@@ -356,9 +356,13 @@ class RedDirectory extends DAV\Node implements DAV\ICollection, DAV\IQuota {
 	}
 
 	/**
-	 * @brief Returns the last modification time for the directory, as a unix
+	 * @brief Returns the last modification time for the directory, as a UNIX
 	 *        timestamp.
 	 *
+	 * It looks for the last edited file in the folder. If it is an empty folder
+	 * it returns the lastmodified time of the folder itself, to prevent zero
+	 * timestamps.
+	 *
 	 * @return int last modification time in UNIX timestamp
 	 */
 	public function getLastModified() {
@@ -366,10 +370,16 @@ class RedDirectory extends DAV\Node implements DAV\ICollection, DAV\IQuota {
 			dbesc($this->folder_hash),
 			intval($this->auth->owner_id)
 		);
-		if ($r)
+		if (! $r) {
-			return datetime_convert('UTC', 'UTC', $r[0]['edited'], 'U');
+			$r = q("SELECT edited FROM attach WHERE hash = '%s' AND uid = %d LIMIT 1",
+				dbesc($this->folder_hash),
+				intval($this->auth->owner_id)
+			);
+			if (! $r)
 				return '';
 		}
+		return datetime_convert('UTC', 'UTC', $r[0]['edited'], 'U');
+	}
 
 	/**
 	 * @brief Return quota usage.
@@ -997,11 +1007,17 @@ class RedBasicAuth extends DAV\Auth\Backend\AbstractBasic {
 		$this->currentUser = $name;
 	}
 
-	function setBrowserPlugin($browser) {
+	/**
+	 * @brief Set browser plugin.
+	 *
+	 * @see RedBrowser::set_writeable()
+	 * @param DAV\Browser\Plugin $browser
+	 */
+	public function setBrowserPlugin($browser) {
 		$this->browser = $browser;
 	}
 
-	// internal? loggin function
+	// internal? logging function
 	function log() {
 		logger('dav: auth: channel_name ' . $this->channel_name, LOGGER_DATA);
 		logger('dav: auth: channel_id ' . $this->channel_id, LOGGER_DATA);
@@ -1045,9 +1061,7 @@ class RedBrowser extends DAV\Browser\Plugin {
 	}
 
 	/**
-	 * Creates the directory listing for the given path.
+	 * @brief Creates the directory listing for the given path.
-	 *
-	 * @todo Why not use RedDirectory for this?
 	 *
 	 * @param string $path which should be displayed
 	 */

mod/cloud.php

@@ -1,10 +1,13 @@
 <?php
+/**
+ * @file mod/cloud.php
+ * @brief Initialize Red Matrix's cloud (SabreDAV)
+ *
+ */
 
 	use Sabre\DAV;
-
 	require_once('vendor/autoload.php');
 
-
 	// workaround for HTTP-auth in CGI mode
 	if(x($_SERVER,'REDIRECT_REMOTE_USER')) {
 	 	$userpass = base64_decode(substr($_SERVER["REDIRECT_REMOTE_USER"], 6)) ;
@@ -24,10 +27,11 @@
 		}
 	}
 
-
+/**
-
+ * @brief Fires up the SabreDAV server.
-
+ *
-
+ * @param App &$a
+ */
 function cloud_init(&$a) {
 
 	require_once('include/reddav.php');
@@ -47,9 +51,6 @@ function cloud_init(&$a) {
 	if($which)
 		profile_load($a, $which, $profile);
 
-
-
-
 	$auth = new RedBasicAuth();
 
 	$ob_hash = get_observer_hash();
@@ -71,8 +72,6 @@ function cloud_init(&$a) {
 	if($_GET['davguest'])
 		$_SESSION['davguest'] = true;
 
-
-
 	$_SERVER['QUERY_STRING'] = str_replace(array('?f=','&f='),array('',''),$_SERVER['QUERY_STRING']);
 	$_SERVER['QUERY_STRING'] = strip_zids($_SERVER['QUERY_STRING']);
 	$_SERVER['QUERY_STRING'] = preg_replace('/[\?&]davguest=(.*?)([\?&]|$)/ism','',$_SERVER['QUERY_STRING']);
@@ -82,7 +81,10 @@ function cloud_init(&$a) {
 	$_SERVER['REQUEST_URI'] = preg_replace('/[\?&]davguest=(.*?)([\?&]|$)/ism','',$_SERVER['REQUEST_URI']);
 
 	$rootDirectory = new RedDirectory('/', $auth);
+
+	// A SabreDAV server-object
 	$server = new DAV\Server($rootDirectory);
+	// prevent overwriting changes each other with a lock backend
 	$lockBackend = new DAV\Locks\Backend\File('store/[data]/locks');
 	$lockPlugin = new DAV\Locks\Plugin($lockBackend);
 
@@ -118,16 +120,14 @@ function cloud_init(&$a) {
 		}
 	}
 
-//	$browser = new DAV\Browser\Plugin();
 
+	// provide a directory view for the cloud in Red Matrix
 	$browser = new RedBrowser($auth);
 
 	$auth->setBrowserPlugin($browser);
 
-
 	$server->addPlugin($browser);
 
-
 	// All we need to do now, is to fire up the server
 	$server->exec();