don't alter file when there is not enough free space

Signed-off-by: grnd-alt <[email protected]>

lib/Controller/WopiController.php

@@ -485,10 +485,21 @@ public function putFile($fileId,
 
 			$content = fopen('php://input', 'rb');
 
+			// Get expected FileSize after writing
+			$storage = \OC_Helper::getStorageInfo($path);
+			fseek($content,0,SEEK_END);
+			$finalSize = ftell($content) + $file->getSize();
+			rewind( $content );
+
 			try {
-				$this->wrappedFilesystemOperation($wopi, function () use ($file, $content) {
-					return $file->putContent($content);
-				});
+				if ($finalSize <= $storage['free']){
+					$this->wrappedFilesystemOperation($wopi, function () use ($file, $content) {
+						return $file->putContent($content);
+					});
+				}
+				else {
+					throw new \Exception('Not enough storage');
+				}
 			} catch (LockedException $e) {
 				$this->logger->error($e->getMessage(), ['exception' => $e]);
 				return new JSONResponse(['message' => 'File locked'], Http::STATUS_INTERNAL_SERVER_ERROR);