From 1b0c5e57e5e4042ebb4f0e5956330a908645b61a Mon Sep 17 00:00:00 2001
From: Vincent Petry <pvince81@owncloud.com>
Date: Fri, 22 Nov 2013 18:18:08 +0100
Subject: [PATCH] Fixed SMB rename function to overwrite target file

When uploading files through WebDAV, a part file is created and a rename
operation is performed with the expectation that the part file
overwrites an existing file, if any.

This fix makes the SMB external storage delete the target file before
renaming, as smbclient doesn't support overwrite on move/rename.

Fixes #5348
---
 apps/files_external/3rdparty/smb4php/smb.php | 16 +++++++++++++++-
 apps/files_external/lib/streamwrapper.php    |  2 +-
 2 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/apps/files_external/3rdparty/smb4php/smb.php b/apps/files_external/3rdparty/smb4php/smb.php
index 9650f809041..87638271f0e 100644
--- a/apps/files_external/3rdparty/smb4php/smb.php
+++ b/apps/files_external/3rdparty/smb4php/smb.php
@@ -302,6 +302,7 @@ class smb {
 	}
 
 	function rename ($url_from, $url_to) {
+		$replace = false;
 		list ($from, $to) = array (smb::parse_url($url_from), smb::parse_url($url_to));
 		if ($from['host'] <> $to['host'] ||
 			$from['share'] <> $to['share'] ||
@@ -314,7 +315,20 @@ class smb {
 			trigger_error('rename(): error in URL', E_USER_ERROR);
 		}
 		smb::clearstatcache ($url_from);
-		$result = smb::execute ('rename "'.$from['path'].'" "'.$to['path'].'"', $to);
+		$cmd = '';
+		// check if target file exists
+		if (smb::url_stat($url_to)) {
+			// delete target file first
+			$cmd = 'del "' . $to['path'] . '"; ';
+			$replace = true;
+		}
+		$cmd .= 'rename "' . $from['path'] . '" "' . $to['path'] . '"';
+		$result = smb::execute($cmd, $to);
+		if ($replace) {
+			// clear again, else the cache will return the info
+			// from the old file
+			smb::clearstatcache ($url_to);
+		}
 		return $result !== false;
 	}
 
diff --git a/apps/files_external/lib/streamwrapper.php b/apps/files_external/lib/streamwrapper.php
index 23c5f91a2f3..4f3dc889b01 100644
--- a/apps/files_external/lib/streamwrapper.php
+++ b/apps/files_external/lib/streamwrapper.php
@@ -38,7 +38,7 @@ abstract class StreamWrapper extends Common {
 	}
 
 	public function filetype($path) {
-		return filetype($this->constructUrl($path));
+		return @filetype($this->constructUrl($path));
 	}
 
 	public function file_exists($path) {
-- 
2.39.5