adding error handling on file_put_contents within the web dav implementation

lib/connector/sabre/directory.php

@@ -72,7 +72,12 @@ class OC_Connector_Sabre_Directory extends OC_Connector_Sabre_Node implements Sa
 			// mark file as partial while uploading (ignored by the scanner)
 			$partpath = $newPath . '.part';
 
-			\OC\Files\Filesystem::file_put_contents($partpath, $data);
+			$putOkay = \OC\Files\Filesystem::file_put_contents($partpath, $data);
+			if ($putOkay === false) {
+				\OC_Log::write('webdav', '\OC\Files\Filesystem::file_put_contents() failed', \OC_Log::ERROR);
+				\OC\Files\Filesystem::unlink($partpath);
+				throw new Sabre_DAV_Exception();
+			}
 
 			//detect aborted upload
 			if (isset ($_SERVER['REQUEST_METHOD']) && $_SERVER['REQUEST_METHOD'] === 'PUT' ) {

lib/connector/sabre/file.php

@@ -58,7 +58,12 @@ class OC_Connector_Sabre_File extends OC_Connector_Sabre_Node implements Sabre_D
 		// mark file as partial while uploading (ignored by the scanner)
 		$partpath = $this->path . '.part';
 
-		\OC\Files\Filesystem::file_put_contents($partpath, $data);
+		$putOkay = \OC\Files\Filesystem::file_put_contents($partpath, $data);
+		if ($putOkay === false) {
+			\OC_Log::write('webdav', '\OC\Files\Filesystem::file_put_contents() failed', \OC_Log::ERROR);
+			\OC\Files\Filesystem::unlink($partpath);
+			throw new Sabre_DAV_Exception();
+		}
 
 		//detect aborted upload
 		if (isset ($_SERVER['REQUEST_METHOD']) && $_SERVER['REQUEST_METHOD'] === 'PUT') {