From 360a23478dda391daa056c08a7c564f5b350e43a Mon Sep 17 00:00:00 2001
From: nocjj <1250062498@qq.com>
Date: Thu, 21 Jan 2021 10:57:09 +0800
Subject: [PATCH] bugfix: add check to avoid invalid ptr for strcmp

If len of d_name is less than "pid", it will pass a invalid ptr
to strcmp, which will cause crash.
---
 src/domain.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/domain.c b/src/domain.c
index 7f9173d..f8dea48 100644
--- a/src/domain.c
+++ b/src/domain.c
@@ -253,6 +253,10 @@ static int check_pid_file(const char *d_name)
     int extern_len = strlen(extern_name);
     int len = strlen(d_name);
 
+    if (len <= extern_len) {
+        return -1;
+    }
+
     return strcmp(d_name + len - extern_len, extern_name);
 }
 
-- 
2.27.0