#!/bin/bash

# Network Interface Configuration System

# Copyright (c) 1996-2009 Red Hat, Inc. all rights reserved.

#

# This program is free software; you can redistribute it and/or modify

# it under the terms of the GNU General Public License, version 2,

# as published by the Free Software Foundation.

#

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

# GNU General Public License for more details.

#

# You should have received a copy of the GNU General Public License

# along with this program; if not, write to the Free Software

# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

. /etc/init.d/functions

cd /etc/sysconfig/network-scripts

. ./network-functions

[ -f ../network ] && . ../network

CONFIG=${1}

source_config

. /etc/sysconfig/network

# Check to make sure the device is actually up

check_device_down ${DEVICE} && [ "$BOOTPROTO" != "dhcp" -a "$BOOTPROTO" != "bootp" ] && [ -n "$VLAN" -a "$VLAN" != "yes" ] && exit 0

if [ -n "${TEAM_MASTER}" ] && [ ! "${DEVICETYPE}" = "TeamPort" ] && [ -x ./ifdown-TeamPort ]; then

    ./ifdown-TeamPort ${CONFIG} $2

fi

if [ "${SLAVE}" != "yes" -o -z "${MASTER}" ]; then

    if [ -n "${HWADDR}" -a -z "${MACADDR}" ]; then

        FOUNDMACADDR=$(get_hwaddr ${REALDEVICE})

        if [ -n "${FOUNDMACADDR}" -a "${FOUNDMACADDR}" != "${HWADDR}" ]; then

            NEWCONFIG=$(get_config_by_hwaddr ${FOUNDMACADDR})

            if [ -n "${NEWCONFIG}" ]; then

                eval $(LANG=C grep -F "DEVICE=" $NEWCONFIG)

            else

                net_log $"Device ${DEVICE} has MAC address ${FOUNDMACADDR}, instead of configured address ${HWADDR}. Ignoring."

                exit 1

            fi

            if [ -n "${NEWCONFIG}" -a "${NEWCONFIG##*/}" != "${CONFIG##*/}" -a "${DEVICE}" = "${REALDEVICE}" ]; then

                exec /sbin/ifdown ${NEWCONFIG}

            else

                net_log $"Device ${DEVICE} has MAC address ${FOUNDMACADDR}, instead of configured address ${HWADDR}. Ignoring."

                exit 1

            fi

        fi

    fi

fi

if is_bonding_device ${DEVICE} ; then

    for device in $(LANG=C grep -l "^[[:space:]]*MASTER=['\"]\?${DEVICE}['\"]\?\([[:space:]#]\|$\)" /etc/sysconfig/network-scripts/ifcfg-*) ; do

        is_ignored_file "$device" && continue

        /sbin/ifdown ${device##*/}

    done

    for arg in $BONDING_OPTS ; do

        key=${arg%%=*};

        [[ "${key}" != "arp_ip_target" ]] && continue

        value=${arg##*=};

        if [ "${value:0:1}" != "" ]; then

            OLDIFS=$IFS;

            IFS=',';

            for arp_ip in $value; do

                if grep -q $arp_ip /sys/class/net/${DEVICE}/bonding/arp_ip_target; then

                    echo "-$arp_ip" > /sys/class/net/${DEVICE}/bonding/arp_ip_target

                fi

            done

            IFS=$OLDIFS;

        else

            value=${value#+};

            if grep -q $value /sys/class/net/${DEVICE}/bonding/arp_ip_target; then

                echo "-$value" > /sys/class/net/${DEVICE}/bonding/arp_ip_target

            fi

        fi

    done

fi

/etc/sysconfig/network-scripts/ifdown-ipv6 ${CONFIG}

retcode=0

for VER in "" 6 ; do

    if [ -f "/run/dhclient$VER-${DEVICE}.pid" ]; then

        dhcpid=$(cat /run/dhclient$VER-${DEVICE}.pid)

        generate_lease_file_name $VER

        if is_true "$DHCPRELEASE";  then

            /sbin/dhclient -r -lf ${LEASEFILE} -pf /run/dhclient$VER-${DEVICE}.pid ${DEVICE} >/dev/null 2>&1

            retcode=$?

        else

            kill $dhcpid >/dev/null 2>&1

            retcode=$?

            reason=STOP$VER interface=${DEVICE} /sbin/dhclient-script

        fi

        if [ -f "/run/dhclient$VER-${DEVICE}.pid" ]; then

            rm -f /run/dhclient$VER-${DEVICE}.pid

            kill $dhcpid >/dev/null 2>&1

        fi  

    fi

done

# we can't just delete the configured address because that address

# may have been changed in the config file since the device was

# brought up.  Flush all addresses associated with this

# instance instead.

if [ -d "/sys/class/net/${REALDEVICE}" ]; then

    LABEL=

    if [ "${REALDEVICE}" != "${DEVICE}" ]; then

        LABEL="label ${DEVICE}"

    fi

    if [ "${REALDEVICE}" = "lo" ]; then

        TIMEOUT=""

        [ -x /usr/bin/timeout ] && TIMEOUT="/usr/bin/timeout --signal=SIGQUIT 4"

        $TIMEOUT ip addr flush dev ${REALDEVICE} ${LABEL} scope global 2>/dev/null

        $TIMEOUT ip addr flush dev ${REALDEVICE} ${LABEL} scope host 2>/dev/null

    else

        ip addr flush dev ${REALDEVICE} ${LABEL} scope global 2>/dev/null

        ip -4 addr flush dev ${REALDEVICE} ${LABEL} scope host 2>/dev/null

    fi

    if [ "${SLAVE}" = "yes" -a -n "${MASTER}" ]; then

        echo "-${DEVICE}" > /sys/class/net/${MASTER}/bonding/slaves 2>/dev/null

    fi

    if [ "${REALDEVICE}" = "${DEVICE}" ]; then

        ip link set dev ${DEVICE} down 2>/dev/null

    fi

fi

[ "$retcode" = "0" ] && retcode=$?

if [ -n "${BRIDGE}" ]; then

    ip link set dev ${DEVICE} nomaster down

    # Upon removing a device from a bridge,

    # it's necessary to make radvd reload its config

    [ -r /run/radvd/radvd.pid ] && kill -HUP $(cat /run/radvd/radvd.pid)

    if [ -d /sys/class/net/${BRIDGE}/brif ] && [ $(ls -1 /sys/class/net/${BRIDGE}/brif | wc -l) -eq 0 ]; then

        ip link del ${BRIDGE}

    fi

fi

if [ "${TYPE}" = "Tap" ]; then

    TUNMODE="mode tap"

    [[ ${DEVICE} == tun* ]] && TUNMODE="mode tun"

    ip tuntap del ${TUNMODE} dev ${DEVICE} >/dev/null

fi

if [ -n "${TEAM_CONFIG}" ] && [ ! "${DEVICETYPE}" = "Team" ] && [ -x ./ifdown-Team ]; then

    ./ifdown-Team ${CONFIG} $2

fi

# wait up to 5 seconds for device to actually come down...

waited=0

while ! check_device_down ${DEVICE} && [ "$waited" -lt 50 ] ; do

    sleep 0.01

    waited=$(($waited+1))

done

# don't leave an outdated key sitting around

if [ -n "${WIRELESS_ENC_KEY}" ] && [ -x /sbin/iwconfig ]; then

    /sbin/iwconfig ${DEVICE} enc 0 >/dev/null 2>&1

fi

if [ "$retcode" = 0 ] ; then

    /etc/sysconfig/network-scripts/ifdown-post $CONFIG

    # do NOT use $? because ifdown should return whether or not

    # the interface went down.

fi

if [ -n "$VLAN" ]; then

    # 802.1q VLAN

    if [ -f /proc/net/vlan/${DEVICE} ]; then

        ip link delete ${DEVICE} type vlan

    fi

fi

exit $retcode