Added error message for when target folder was removed

Whent trying to upload/rename/create files in a folder that was removed
or rename, the correct error message is now shown.

In the case of upload of multiple files, the upload is cancelled.

This situation can happen if the target folder was renamed or removed
from another browser window or client.

3 files changed, 22 insertions, 2 deletions

diff --git a/apps/files/ajax/newfile.php b/apps/files/ajax/newfile.php
index ec5b716fb2a..1853098c507 100644
--- a/apps/files/ajax/newfile.php
+++ b/apps/files/ajax/newfile.php
@@ -64,6 +64,15 @@ if(strpos($filename, '/') !== false) {
 	exit();
 }
 
+if (!\OC\Files\Filesystem::file_exists($dir . '/')) {
+	$result['data'] = array('message' => (string)$l10n->t(
+			'The target folder has been moved or deleted.'),
+			'code' => 'targetnotfound'
+		);
+	OCP\JSON::error($result);
+	exit();
+}
+
 //TODO why is stripslashes used on foldername in newfolder.php but not here?
 $target = $dir.'/'.$filename;
 
diff --git a/apps/files/ajax/newfolder.php b/apps/files/ajax/newfolder.php
index 2cbc8cfeba5..4cfcae3090d 100644
--- a/apps/files/ajax/newfolder.php
+++ b/apps/files/ajax/newfolder.php
@@ -29,6 +29,15 @@ if(strpos($foldername, '/') !== false) {
 	exit();
 }
 
+if (!\OC\Files\Filesystem::file_exists($dir . '/')) {
+	$result['data'] = array('message' => (string)$l10n->t(
+			'The target folder has been moved or deleted.'),
+			'code' => 'targetnotfound'
+		);
+	OCP\JSON::error($result);
+	exit();
+}
+
 //TODO why is stripslashes used on foldername here but not in newfile.php?
 $target = $dir . '/' . stripslashes($foldername);
 		
diff --git a/apps/files/ajax/upload.php b/apps/files/ajax/upload.php
index bdaf6a77d14..8f6c42d6620 100644
--- a/apps/files/ajax/upload.php
+++ b/apps/files/ajax/upload.php
@@ -8,6 +8,7 @@ OCP\JSON::setContentTypeHeader('text/plain');
 // If no token is sent along, rely on login only
 
 $allowedPermissions = OCP\PERMISSION_ALL;
+$errorCode = null;
 
 $l = OC_L10N::get('files');
 if (empty($_POST['dirToken'])) {
@@ -125,7 +126,8 @@ if (strpos($dir, '..') === false) {
 
 					$meta = \OC\Files\Filesystem::getFileInfo($target);
 					if ($meta === false) {
-						$error = $l->t('Upload failed. Could not get file info.');
+						$error = $l->t('The target folder has been moved or deleted.');
+						$errorCode = 'targetnotfound';
 					} else {
 						$result[] = array('status' => 'success',
 							'mime' => $meta['mimetype'],
@@ -177,5 +179,5 @@ if ($error === false) {
 	OCP\JSON::encodedPrint($result);
 	exit();
 } else {
-	OCP\JSON::error(array(array('data' => array_merge(array('message' => $error), $storageStats))));
+	OCP\JSON::error(array(array('data' => array_merge(array('message' => $error, 'code' => $errorCode), $storageStats))));
 }