#!/usr/bin/env bash
set -eu
TMP_FILE=""
stop() {
trap - SIGINT EXIT
{ pkill -f socat || true; } 2>/dev/null
[ -f "$TMP_FILE" ] && rm -f "$TMP_FILE"
}
trap 'stop' EXIT SIGINT SIGTERM SIGHUP
if [[ "$2" == "/"* ]]; then
socat TCP4-LISTEN:"${1:-5000}",reuseaddr,fork,crlf SYSTEM:"$2" 2> /dev/null & wait $!
else
HTML="VirtualDSM
$2
"
LENGTH="${#HTML}"
TMP_FILE=$(mktemp -q /tmp/server.XXXXXX)
echo -en "HTTP/1.1 200 OK\nContent-Length: ${LENGTH}\nConnection: close\n\n$HTML" > $TMP_FILE
socat TCP4-LISTEN:"${1:-5000}",reuseaddr,fork,crlf SYSTEM:"cat ${TMP_FILE}" 2> /dev/null & wait $!
fi