#!/bin/ash
#
# SPDX-License-Identifier: GPL-3.0-or-later

run_hook () {
    # Do *not* declare 'bootif_dev' local! We need it in run_latehook().
    local i net_mac bootif_mac
    local DNSDOMAIN HOSTNAME IPV4DNS0 IPV4DNS1 ROOTSERVER
    # These variables will be parsed from /tmp/net-*.conf generated by ipconfig
    # shellcheck disable=SC2034
    local DEVICE IPV4ADDR IPV4BROADCAST IPV4NETMASK IPV4GATEWAY NISDOMAIN ROOTPATH filename

    if [ -n "${ip}" ]; then
        if [ -n "${BOOTIF}" ]; then
            bootif_mac="${BOOTIF#01-}"
            # shellcheck disable=SC2169
            # ash supports bash-like string replacment
            bootif_mac="${bootif_mac//-/:}"
            for i in /sys/class/net/*/address; do
                read -r net_mac < "${i}"
                if [ "${bootif_mac}" = "${net_mac}" ]; then
                    bootif_dev=${i#/sys/class/net/}
                    bootif_dev=${bootif_dev%/address}
                    break
                fi
            done
            if [ "${ip}" = "dhcp" ]; then
                ip=":::::${bootif_dev}:dhcp"
            else
                ip="${ip}::${bootif_dev}"
            fi
        fi

        # setup network and save some values
        if ! ipconfig -t 20 "ip=${ip}"; then
            echo "ERROR; Failed to configure network"
            echo "   Falling back to interactive prompt"
            echo "   You can try to fix the problem manually, log out when you are finished"
            launch_interactive_shell
        fi

        # shellcheck disable=SC1090
        # ipconfig generates these files
        . /tmp/net-*.conf

        export pxeserver="${ROOTSERVER}"

        # setup DNS resolver
        if [ "${IPV4DNS0}" != "0.0.0.0" ]; then
            echo "# added by parabolaiso_pxe_common hook" > /etc/resolv.conf
            echo "nameserver ${IPV4DNS0}" >> /etc/resolv.conf
        fi
        if [ "${IPV4DNS1}" != "0.0.0.0" ]; then
            echo "nameserver ${IPV4DNS1}" >> /etc/resolv.conf
        fi
        if [ -n "${DNSDOMAIN}" ]; then
            echo "search ${DNSDOMAIN}" >> /etc/resolv.conf
            echo "domain ${DNSDOMAIN}" >> /etc/resolv.conf
        fi
    fi
}

run_latehook () {
    if [ -n "${ip}" ]; then
        [ -z "${copy_resolvconf}" ] && copy_resolvconf="y"

        # shellcheck disable=SC2154
        # defined via initcpio's parse_cmdline()
        if [ "${copytoram}" = "y" ]; then
            if [ -n "${bootif_dev}" ]; then
                ip addr flush dev "${bootif_dev}"
                ip link set "${bootif_dev}" down
            fi
        elif [ "${copy_resolvconf}" != "n" ] && [ -f /etc/resolv.conf ]; then
            cp /etc/resolv.conf /new_root/etc/resolv.conf
        fi
    fi
}

# vim: set ft=sh: