From 2b7e06d3c5d93dc8bfd3ba1bee558610cfe37b38 Mon Sep 17 00:00:00 2001
From: Martin Mares <mj@ucw.cz>
Date: Thu, 9 Jul 2015 00:00:36 +0200
Subject: [PATCH] JSON: Reject denormalized UTF-8 sequences

---
 ucw-json/json-test.t | 6 ++++++
 ucw-json/parse.c     | 1 -
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/ucw-json/json-test.t b/ucw-json/json-test.t
index cece0d23..db747e7f 100644
--- a/ucw-json/json-test.t
+++ b/ucw-json/json-test.t
@@ -205,6 +205,12 @@ In:	"<ed><b0><80>"
 Exit:	1
 Err:	ERROR: Invalid surrogate character in string at line 1:2
 
+# Denormalized U+07FF
+Name:	UTF-8 denormalized
+In:	"<c1><bf>"
+Exit:	1
+Err:	ERROR: Malformed UTF-8 character at line 1:1
+
 # U+FEFF
 Name:	UTF-8 BOM
 In:	<ef><bb><bf>
diff --git a/ucw-json/parse.c b/ucw-json/parse.c
index 8ed97e3b..7873d13f 100644
--- a/ucw-json/parse.c
+++ b/ucw-json/parse.c
@@ -40,7 +40,6 @@ static int json_get_char(struct json_context *js)
       if (c == -2)
 	json_parse_error(js, "Malformed UTF-8 character");
       js->in_eof = 1;
-      // FIXME: Reject alternative sequences
       return c;
     }
   js->in_column++;
-- 
2.39.2