In debugging mode we enable Sabre's browser plugin since it helps a lot when debugging

apps/dav/appinfo/v1/caldav.php

@@ -23,6 +23,7 @@
 
 // Backends
 use OCA\DAV\CalDAV\CalDavBackend;
+use OCA\DAV\Connector\LegacyDAVACL;
 use OCA\DAV\Connector\Sabre\Auth;
 use OCA\DAV\Connector\Sabre\ExceptionLoggerPlugin;
 use OCA\DAV\Connector\Sabre\MaintenancePlugin;
@@ -43,12 +44,14 @@ $principalBackend = new Principal(
 $db = \OC::$server->getDatabaseConnection();
 $calDavBackend = new CalDavBackend($db, $principalBackend);
 
+$debugging = \OC::$server->getConfig()->getSystemValue('debug', false);
+
 // Root nodes
 $principalCollection = new \Sabre\CalDAV\Principal\Collection($principalBackend);
-$principalCollection->disableListing = true; // Disable listing
+$principalCollection->disableListing = !$debugging; // Disable listing
 
 $addressBookRoot = new CalendarRoot($principalBackend, $calDavBackend);
-$addressBookRoot->disableListing = true; // Disable listing
+$addressBookRoot->disableListing = !$debugging; // Disable listing
 
 $nodes = array(
 	$principalCollection,
@@ -65,8 +68,10 @@ $server->addPlugin(new MaintenancePlugin());
 $server->addPlugin(new \Sabre\DAV\Auth\Plugin($authBackend, 'ownCloud'));
 $server->addPlugin(new \Sabre\CalDAV\Plugin());
 
-$acl = new \OCA\DAV\Connector\LegacyDAVACL();
-$server->addPlugin($acl);
+$server->addPlugin(new LegacyDAVACL());
+if ($debugging) {
+	$server->addPlugin(new Sabre\DAV\Browser\Plugin());
+}
 
 $server->addPlugin(new \Sabre\CalDAV\ICSExportPlugin());
 $server->addPlugin(new ExceptionLoggerPlugin('caldav', \OC::$server->getLogger()));

apps/dav/appinfo/v1/carddav.php

@@ -24,6 +24,7 @@
 // Backends
 use OCA\DAV\CardDAV\AddressBookRoot;
 use OCA\DAV\CardDAV\CardDavBackend;
+use OCA\DAV\Connector\LegacyDAVACL;
 use OCA\DAV\Connector\Sabre\Auth;
 use OCA\DAV\Connector\Sabre\ExceptionLoggerPlugin;
 use OCA\DAV\Connector\Sabre\MaintenancePlugin;
@@ -44,12 +45,14 @@ $principalBackend = new Principal(
 $db = \OC::$server->getDatabaseConnection();
 $cardDavBackend = new CardDavBackend($db, $principalBackend);
 
+$debugging = \OC::$server->getConfig()->getSystemValue('debug', false);
+
 // Root nodes
 $principalCollection = new \Sabre\CalDAV\Principal\Collection($principalBackend);
-$principalCollection->disableListing = true; // Disable listing
+$principalCollection->disableListing = !$debugging; // Disable listing
 
 $addressBookRoot = new AddressBookRoot($principalBackend, $cardDavBackend);
-$addressBookRoot->disableListing = true; // Disable listing
+$addressBookRoot->disableListing = !$debugging; // Disable listing
 
 $nodes = array(
 	$principalCollection,
@@ -65,8 +68,10 @@ $server->addPlugin(new MaintenancePlugin());
 $server->addPlugin(new \Sabre\DAV\Auth\Plugin($authBackend, 'ownCloud'));
 $server->addPlugin(new Plugin());
 
-$acl = new \OCA\DAV\Connector\LegacyDAVACL();
-$server->addPlugin($acl);
+$server->addPlugin(new LegacyDAVACL());
+if ($debugging) {
+	$server->addPlugin(new Sabre\DAV\Browser\Plugin());
+}
 
 $server->addPlugin(new \Sabre\CardDAV\VCFExportPlugin());
 $server->addPlugin(new ExceptionLoggerPlugin('carddav', \OC::$server->getLogger()));

apps/dav/lib/server.php

@@ -28,6 +28,7 @@ use OCA\DAV\Connector\FedAuth;
 use OCA\DAV\Connector\Sabre\Auth;
 use OCA\DAV\Connector\Sabre\BlockLegacyClientPlugin;
 use OCA\DAV\Connector\Sabre\DavAclPlugin;
+use OCA\DAV\Connector\Sabre\DummyGetResponsePlugin;
 use OCA\DAV\Connector\Sabre\FilesPlugin;
 use OCA\DAV\Files\CustomPropertiesBackend;
 use OCP\IRequest;
@@ -68,7 +69,13 @@ class Server {
 		$event = new SabrePluginEvent($this->server);
 		$dispatcher->dispatch('OCA\DAV\Connector\Sabre::authInit', $event);
 
-		$this->server->addPlugin(new \OCA\DAV\Connector\Sabre\DummyGetResponsePlugin());
+		// debugging
+		if(\OC::$server->getConfig()->getSystemValue('debug', false)) {
+			$this->server->addPlugin(new \Sabre\DAV\Browser\Plugin());
+		} else {
+			$this->server->addPlugin(new DummyGetResponsePlugin());
+		}
+
 		$this->server->addPlugin(new \OCA\DAV\Connector\Sabre\ExceptionLoggerPlugin('webdav', $logger));
 		$this->server->addPlugin(new \OCA\DAV\Connector\Sabre\LockPlugin());
 		$this->server->addPlugin(new \Sabre\DAV\Sync\Plugin());