Merge pull request #7979 from DDDHuang/bad_node_name

fix(conf): check node name, otp regular expression

CHANGES-4.3.md

@@ -32,6 +32,7 @@ File format:
 * Improved resilience against autocluster partitioning during cluster
   startup. [#7876]
   [ekka-158](https://github.com/emqx/ekka/pull/158)
+* Add regular expression check ^[0-9A-Za-z_\-]+$ for node name [#7979]
 
 ## v4.3.14
 

bin/emqx

@@ -488,6 +488,10 @@ fi
 NAME_TYPE="$(echo "$NAME_ARG" | awk '{print $1}')"
 NAME="$(echo "$NAME_ARG" | awk '{print $2}')"
 NODENAME="$(echo "$NAME" | awk -F'@' '{print $1}')"
+if ! (echo "$NODENAME" | grep -q '^[0-9A-Za-z_\-]\+$'); then
+    echo "Invalid node name, should be of format '^[0-9A-Za-z_-]+$'."
+    exit 1
+fi
 export ESCRIPT_NAME="$NODENAME"
 
 PIPE_DIR="${PIPE_DIR:-/$RUNNER_DATA_DIR/${WHOAMI}_erl_pipes/$NAME/}"