From 38d92c940107f55e93c4dd9abdee19e74cc3a732 Mon Sep 17 00:00:00 2001
From: Shawn <506895667@qq.com>
Date: Tue, 20 Jun 2023 10:30:06 +0800
Subject: [PATCH] fix: add range validation for max_clientid_len

---
 priv/emqx.schema | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/priv/emqx.schema b/priv/emqx.schema
index 9e2487757..7aa0592f2 100644
--- a/priv/emqx.schema
+++ b/priv/emqx.schema
@@ -276,6 +276,9 @@ end}.
 {validator, "range:1-65535", "must be 1 to 65535",
   fun(X) -> X >= 1 andalso X =< 65535 end}.
 
+{validator, "range:23-65535", "must be 23 to 65535",
+  fun(X) -> X >= 23 andalso X =< 65535 end}.
+
 {validator, "range:1-9", "must be 1 to 9",
   fun(X) -> X >= 1 andalso X =< 9 end}.
 
@@ -955,7 +958,8 @@ end}.
 %% @doc Set the Max ClientId Length Allowed.
 {mapping, "mqtt.max_clientid_len", "emqx.max_clientid_len", [
   {default, 65535},
-  {datatype, integer}
+  {datatype, integer},
+  {validators, ["range:23-65535"]}
 ]}.
 
 %% @doc Set the Maximum topic levels.