#!/bin/sh

# ifdown

DEVICE=${1}

BRCTL=/usr/sbin/brctl

# Source functions library
source /etc/rc.d/init.d/functions

log_script_name "$0 $*"

# Load network interface card parameters
source /etc/sysconfig/network/ifconfig.${DEVICE}

# Check that the brctl program is present and executable.
check_brctl()
{
    if [ ! -x ${BRCTL} ]; then
        msg_log "*** ERROR: /usr/sbin/brctl not found."
        exit ${EXIT_CODE_FAILURE}
    fi
}

# First make sure interface is available
if ! ip link show ${DEVICE} 1> /dev/null 2>&1 ; then
    echo "Interface ${DEVICE} not available"
    exit ${EXIT_CODE_WARNING}
fi

if [ "x${BOOTPROTO}" = "xdhcp" -o "x${BOOTPROTO}" = "xwifi" ]; then
    # DHCP configuration
    # Load DHCP client parameters
    source /etc/sysconfig/network/dhcp-client

    if [ ! -x ${DHCP_PROG} ]; then
	echo "Program \"${DHCP_PROG}\" is not executable."
        exit ${EXIT_CODE_FAILURE}
    fi
    cmd_run_log ${DHCP_PROG} ${DHCP_STOP} ${DEVICE} || exit ${EXIT_CODE_FAILURE}
elif [ x${BOOTPROTO} = "xstatic" ]; then
    # Static configuration
    cmd_run_log ip addr flush ${DEVICE} || exit ${EXIT_CODE_FAILURE}
elif [ x${BOOTPROTO} = "xpppoe" ]; then
    # PPPoE configuration
    cmd_run_log pppoe-stop
    cmd_run_log ip addr flush ${DEVICE} || exit ${EXIT_CODE_FAILURE}
else
    exit 1
fi

if [ "x${BOOTPROTO}" = "xwifi" ]; then
    echo "Stopping wpa_supplicant"
    killall wpa_supplicant
fi

cmd_run_log ip link set ${DEVICE} down || exit ${EXIT_CODE_FAILURE}

# Determining if the interface is part of a bridge:
if [ -n "${BRIDGE_TO}" ]; then
    check_brctl
    cmd_run_log ${BRCTL} delif ${BRIDGE_TO} ${1} || exit 1
fi

# Determining if the interface is a bridge:
if [ "x${BRIDGE}" = "xyes" ]; then
    # Check that the brctl program is present and executable.
    if [ ! -x ${BRCTL} ]; then
        msg_log "*** ERROR: /usr/sbin/brctl not found."
        exit ${EXIT_CODE_FAILURE}
    fi

    cmd_run_log ${BRCTL} delbr ${1}
fi

exit $?