#!/usr/bin/env bash
# Enable or disable DHCP network-boot options (option 66/67) on the provisioning LXC.
# Does not stop the DHCP server or TFTP; only stops advertising netboot so devices boot from local storage.
# Usage: toggle-network-boot-dhcp.sh enable | disable
# Run as root (or with sudo). Install to /opt/cm4-provisioning/toggle-network-boot-dhcp.sh

set -e
PXE_CONF="/etc/dnsmasq.d/network-boot-pxe.conf"
SNIPPET_CONTENT="# PXE options - do not edit; managed by toggle-network-boot-dhcp.sh
dhcp-option=66,10.20.50.1
dhcp-option=67,start4cd.elf
"

case "${1:-}" in
  enable)
    echo "$SNIPPET_CONTENT" > "$PXE_CONF"
    systemctl reload dnsmasq 2>/dev/null || service dnsmasq reload 2>/dev/null || true
    echo "Network boot (DHCP options) enabled."
    ;;
  disable)
    rm -f "$PXE_CONF"
    systemctl reload dnsmasq 2>/dev/null || service dnsmasq reload 2>/dev/null || true
    echo "Network boot (DHCP options) disabled. Devices will get DHCP but boot from local storage."
    ;;
  status)
    if [ -f "$PXE_CONF" ]; then
      echo "enabled"
    else
      echo "disabled"
    fi
    ;;
  *)
    echo "Usage: $0 enable | disable | status" >&2
    exit 1
    ;;
esac