#----------------------------------------------------------------------------
# /var/installl/include/retore-ip-eth - configuration of ethernet cards
#
# Creation   :  2022-12-29  hbfl
# 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.
#----------------------------------------------------------------------------
#
# update the ip-eth after a special package was stopped to restore default settings
# included from bonding, brigde, etc..
#

# ---------------------------------------------------------------------------
# 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
}


    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 [ ${idy} -ge 2 ]
                then
                    /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