#!/bin/sh
#----------------------------------------------------------------------------
# /etc/rc.d/ip-eth - ip configuration of ethernet cards
#
# Creation   :  2001-02-04  fm
# Last Update:  $Id$
#
# Copyright (c) 2001-@@YEAR@@ the eisfair team, team(at)eisfair(dot)org
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#----------------------------------------------------------------------------
### BEGIN INIT INFO
# Provides:             network
# Required-Start:
# Should-Start:
# Required-Stop:
# Should-Stop:
# Default-Start:        3 5
# Default-Stop:         0 1 2 6
# Short-Description:    network
# Description:          network
### END INIT INFO

#
# Important:
# if settings change, please update /var/install/include/restore-ip-eth also
#

. /etc/config.d/base
. /etc/init.d/functions

if [ "${IP_ETH_DEBUG}" = "yes" ]
then
    set -x
fi

# ---------------------------------------------------------------------------
# get network device name
# ---------------------------------------------------------------------------
get_name()
{
    eth_name=${1}
    net_devices=$(/usr/bin/find /sys/class/net/ -maxdepth 1 -type l -printf '%f\n')

    # if name = eth?
    if echo "${net_devices}" | /usr/bin/grep -q -Ew "${eth_name}"
    then
        name=${eth_name}
        eth_found=true
    fi

    # if name != eth?
    if ! ${eth_found:-false}
    then
        name=$(echo "${net_devices}" | /usr/bin/grep -Ew '(enp[1-9]?[0-9]s[1-9]?[0-9][fu]?[1-9]?[0-9]?u?[1-9]?[0-9]?)|(en[os][1-9]?[0-9])|(enx[[:alnum:]]{12})')
    fi
}

# ---------------------------------------------------------------------------
# main
# ---------------------------------------------------------------------------

case $1 in
start)
    boot_mesg ' * Configuring ip on ethernet cards ...'

    idx0=0
    idx=1
    while [ ${idx} -le ${IP_ETH_N:-0} ]
    do
        eval name='${IP_ETH_'${idx}'_NAME}'

        if [ -z "${name}" ]
        then
            get_name eth${idx0}
        fi

        eval ip_n='${IP_ETH_'${idx}'_IP_N}'

        if [ ${ip_n} -eq 0 ]
        then
            idx=$((${idx} + 1))
            continue
        fi 

        idy=1
        while [ ${idy} -le ${ip_n:-0} ]
        do
            eval  ipaddr='${IP_ETH_'${idx}'_IP_'${idy}'_IPADDR}'
            eval network='${IP_ETH_'${idx}'_IP_'${idy}'_NETWORK}'
            eval netmask='${IP_ETH_'${idx}'_IP_'${idy}'_NETMASK}'
            netmaskbits=$(/usr/bin/netcalc netmaskbits ${network}:${netmask})

            # skip configuration if no ip name and ip address set
            if [ -n "${name}" -a -n "${ipaddr}" -a "${ipaddr}" != "0.0.0.0" ]
            then
    #            if echo "${name}" | /usr/bin/grep -q ':'
                if [ ${idy} -ge 2 ]  
                then
#                    /usr/sbin/ip addr add ${ipaddr}/${netmaskbits} dev ${name%:*} label ${name}
                    /usr/sbin/ip addr add ${ipaddr}/${netmaskbits} brd + dev ${name}
                    /usr/sbin/ip link set ${name} up
                else
                    /usr/sbin/ip -4 addr flush dev ${name}
                    /usr/sbin/ip addr add ${ipaddr}/${netmaskbits} brd + dev ${name}
                    /usr/sbin/ip link set ${name} up
                fi

                # wait for device state to become 'UP' (check value between angle brackets)
                jdx=10
                while /usr/sbin/ip link show ${name} | /usr/bin/grep -i -q 'state DOWN'
                do
                    if [ ${jdx} -lt 2 ]
                    then
                        echo "   failed to start network interface '${name}'!"
                        break
                    else
                        echo "   waiting ${jdx} seconds for network interface '${name}' to be up."

                        jdx=$((${jdx} - 2))
                        sleep 2
                    fi
                done
            fi
            idy=$((${idy} + 1))
        done

        idx0=${idx}
        idx=$((${idx} + 1))
    done
    evaluate_retval
    ;;
stop)
    boot_mesg ' * Shutting down ip on ethernet cards ...'
    echo 'Network is going down now!' | /usr/bin/wall

    idx0=0
    idx=1
    while [ ${idx} -le ${IP_ETH_N:-0} ]
    do
        eval name='${IP_ETH_'${idx}'_NAME}'

        if [ -z "${name}" ]
        then
            get_name eth${idx0}
        fi

        /usr/sbin/ip link set ${name} down

        idx0=${idx}
        idx=$((${idx} + 1))
    done
    evaluate_retval
    ;;
esac

set +x
# ---------------------------------------------------------------------------
# end
# ---------------------------------------------------------------------------