From 87a705223fd07390018811a5a220b862fb3678b3 Mon Sep 17 00:00:00 2001
From: Adela0602 <53685844+Adela0602@users.noreply.github.com>
Date: Sun, 4 Aug 2019 21:11:30 +0800
Subject: [PATCH] Fix potential segmentation fault (SIGSEGV) error #209 (#210)

---
 src/server.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/server.c b/src/server.c
index 87454af..cea5774 100644
--- a/src/server.c
+++ b/src/server.c
@@ -382,6 +382,10 @@ main(int argc, char **argv) {
                         return -1;
                     }
                     char *value = strsep(&option, "=");
+                    if (value == NULL) {
+                        fprintf(stderr, "ttyd: invalid client option: %s, format: key=value\n", optarg);
+                        return -1;
+                    }
                     free(option);
                     struct json_object *obj = json_tokener_parse(value);
                     json_object_object_add(client_prefs, key, obj != NULL ? obj : json_object_new_string(value));
-- 
2.43.4