Fixed FTP and SMB to use rmdir() when deleting folders

Some storages need to use different calls for deleting files or folders,
usually unlink() and rmdir().

Fixes #4532 (SMB dir deletion)
Fixes #5941 (FTP dir deletion)

Note that the extra is_dir() should be fast because it's read from the
stat cache.

1 files changed, 8 insertions, 4 deletions

diff --git a/apps/files_external/lib/streamwrapper.php b/apps/files_external/lib/streamwrapper.php
index 7a1991d4f04..e484325e2fb 100644
--- a/apps/files_external/lib/streamwrapper.php
+++ b/apps/files_external/lib/streamwrapper.php
@@ -25,8 +25,9 @@ abstract class StreamWrapper extends Common {
 					$this->unlink($path . '/' . $file);
 				}
 			}
-			$success = rmdir($this->constructUrl($path));
-			clearstatcache();
+			$url = $this->constructUrl($path);
+			$success = rmdir($url);
+			clearstatcache(false, $url);
 			return $success;
 		} else {
 			return false;
@@ -46,8 +47,11 @@ abstract class StreamWrapper extends Common {
 	}
 
 	public function unlink($path) {
-		$success = unlink($this->constructUrl($path));
-		clearstatcache();
+		$url = $this->constructUrl($path);
+		$success = unlink($url);
+		// normally unlink() is supposed to do this implicitly,
+		// but doing it anyway just to be sure
+		clearstatcache(false, $url);
 		return $success;
 	}