Initial release: install, uninstall, SmartDNS, web UI

Co-authored-by: Cursor <cursoragent@cursor.com>

init.d/S98smartdns

@@ -0,0 +1,41 @@
+#!/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