Merge pull request #328 from defunctl/master

Throw exception if a resource fails to seek

getid3/getid3.php

@@ -2255,7 +2255,15 @@ protected function fseek($bytes, $whence=SEEK_SET) {
 				throw new getid3_exception('cannot fseek('.$pos.') because beyond PHP filesystem limit', 10);
 			}
 		}
-		return fseek($this->getid3->fp, $bytes, $whence);
+
+		$result = fseek($this->getid3->fp, $bytes, $whence);
+
+		// fseek returns 0 on success
+		if ($result !== 0) {
+			throw new getid3_exception('cannot fseek('.$pos.'). resource/stream does not appear to support seeking', 10);
+		}
+
+		return $result;
 	}
 
 	/**