fix recursive copy and rename for common storage backend

lib/private/files/storage/common.php

@@ -137,20 +137,49 @@ abstract class Common implements \OC\Files\Storage\Storage {
 	}
 
 	public function rename($path1, $path2) {
-		if ($this->copy($path1, $path2)) {
-			$this->removeCachedFile($path1);
-			return $this->unlink($path1);
+		if ($this->file_exists($path2)) {
+			if ($this->is_dir($path2)) {
+				$this->rmdir($path2);
+			} else if ($this->is_file($path2)) {
+				$this->unlink($path2);
+			}
+		}
+
+		$this->removeCachedFile($path1);
+		if ($this->is_dir($path1)) {
+			return $this->copy($path1, $path2) and $this->rmdir($path1);
 		} else {
-			return false;
+			return $this->copy($path1, $path2) and $this->unlink($path1);
 		}
 	}
 
 	public function copy($path1, $path2) {
-		$source = $this->fopen($path1, 'r');
-		$target = $this->fopen($path2, 'w');
-		list($count, $result) = \OC_Helper::streamCopy($source, $target);
-		$this->removeCachedFile($path2);
-		return $result;
+		if ($this->is_dir($path1)) {
+			if ($this->file_exists($path2)) {
+				if ($this->is_dir($path2)) {
+					$this->rmdir($path2);
+				} else if ($this->is_file($path2)) {
+					$this->unlink($path2);
+				}
+			}
+			$dir = $this->opendir($path1);
+			$this->mkdir($path2);
+			while ($file = readdir($dir)) {
+				if (($file != '.') && ($file != '..')) {
+					if (!$this->copy($path1 . '/' . $file, $path2 . '/' . $file)) {
+						return false;
+					}
+				}
+			}
+			closedir($dir);
+			return true;
+		} else {
+			$source = $this->fopen($path1, 'r');
+			$target = $this->fopen($path2, 'w');
+			list(, $result) = \OC_Helper::streamCopy($source, $target);
+			$this->removeCachedFile($path2);
+			return $result;
+		}
 	}
 
 	public function getMimeType($path) {