Also check if the source path is valid for rename and copy operations

Author: icewind1991

lib/filesystemview.php

@@ -326,7 +326,9 @@ public function rename($path1, $path2) {
 		$postFix2=(substr($path2,-1,1)==='/')?'/':'';
 		$absolutePath1 = OC_Filesystem::normalizePath($this->getAbsolutePath($path1));
 		$absolutePath2 = OC_Filesystem::normalizePath($this->getAbsolutePath($path2));
-		if(OC_FileProxy::runPreProxies('rename', $absolutePath1, $absolutePath2) and OC_Filesystem::isValidPath($path2)) {
+		if(OC_FileProxy::runPreProxies('rename', $absolutePath1, $absolutePath2)
+				and OC_Filesystem::isValidPath($path1)
+				and OC_Filesystem::isValidPath($path2)) {
 			$path1 = $this->getRelativePath($absolutePath1);
 			$path2 = $this->getRelativePath($absolutePath2);
 
@@ -378,7 +380,9 @@ public function copy($path1, $path2) {
 		$postFix2=(substr($path2,-1,1)==='/')?'/':'';
 		$absolutePath1 = OC_Filesystem::normalizePath($this->getAbsolutePath($path1));
 		$absolutePath2 = OC_Filesystem::normalizePath($this->getAbsolutePath($path2));
-		if(OC_FileProxy::runPreProxies('copy', $absolutePath1, $absolutePath2) and OC_Filesystem::isValidPath($path2)) {
+		if(OC_FileProxy::runPreProxies('copy', $absolutePath1, $absolutePath2)
+				and OC_Filesystem::isValidPath($path1)
+				and OC_Filesystem::isValidPath($path2)) {
 			$path1 = $this->getRelativePath($absolutePath1);
 			$path2 = $this->getRelativePath($absolutePath2);