#!/bin/sh
# SmartDNS for Keenetic-Split-DNS (wraps Entware smartdns)

KSD_ETC="/opt/etc/keenetic-split-dns"
CONF="${KSD_ETC}/smartdns.conf"
PIDFILE="/opt/var/run/keenetic-split-dns/smartdns.pid"
LOGDIR="/opt/var/log/keenetic-split-dns"

start() {
  mkdir -p "$LOGDIR" "$(dirname "$PIDFILE")"
  [ -f "$CONF" ] || return 1
  if pidof smartdns >/dev/null 2>&1; then
    return 0
  fi
  smartdns -c "$CONF" -p "$PIDFILE" >/dev/null 2>&1 &
  sleep 1
  pidof smartdns >/dev/null 2>&1
}

stop() {
  if [ -f "$PIDFILE" ]; then
    kill "$(cat "$PIDFILE" 2>/dev/null)" 2>/dev/null || true
    rm -f "$PIDFILE"
  fi
  killall smartdns 2>/dev/null || true
}

case "$1" in
  start) start ;;
  stop) stop ;;
  restart) stop; sleep 1; start ;;
  status)
    if pidof smartdns >/dev/null 2>&1; then
      echo "smartdns running"
      exit 0
    fi
    echo "smartdns stopped"
    exit 1
    ;;
esac
exit 0