From fd8e524b823629b700ae550faced472757df3fbb Mon Sep 17 00:00:00 2001
From: Valentin Bartenev <vbart@nginx.com>
Date: Wed, 25 Mar 2020 19:14:15 +0300
Subject: [PATCH] Configuration: fixed comments parsing.

Unclosed multi-line comments and "/" at the end of JSON shouldn't be allowed.
---
 src/nxt_conf.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/nxt_conf.c b/src/nxt_conf.c
index 2a952c35..3e1130be 100644
--- a/src/nxt_conf.c
+++ b/src/nxt_conf.c
@@ -1269,6 +1269,7 @@ nxt_conf_json_skip_space(u_char *start, u_char *end)
             case '\r':
                 continue;
             case '/':
+                start = p;
                 state = sw_after_slash;
                 continue;
             }
@@ -1285,7 +1286,6 @@ nxt_conf_json_skip_space(u_char *start, u_char *end)
                 continue;
             }
 
-            p--;
             break;
 
         case sw_single_comment:
@@ -1318,6 +1318,10 @@ nxt_conf_json_skip_space(u_char *start, u_char *end)
         break;
     }
 
+    if (nxt_slow_path(state != sw_normal)) {
+        return start;
+    }
+
     return p;
 }