Fix: invalid mask shift

bzick · bzick · commit cea5842132b0 · 2016-03-31T10:23:41.000+03:00
diff --git a/websocket_parser.c b/websocket_parser.c
@@ -185,5 +185,5 @@ uint8_t websocket_decode(char * dst, const char * src, size_t len, char mask[4],
         dst[i] = src[i] ^ mask[(i + mask_offset) % 4];
     }
 
-    return (uint8_t) ((i + mask_offset + 1) % 4);
+    return (uint8_t) ((i + mask_offset) % 4);
 }

Original file line number	Diff line number	Diff line change
`@@ -185,5 +185,5 @@ uint8_t websocket_decode(char * dst, const char * src, size_t len, char mask[4],`
`185`	`185`	`dst[i] = src[i] ^ mask[(i + mask_offset) % 4];`
`186`	`186`	`}`
`187`	`187`
`188`		`- return (uint8_t) ((i + mask_offset + 1) % 4);`
	`188`	`+ return (uint8_t) ((i + mask_offset) % 4);`
`189`	`189`	`}`