#!/bin/sh

# ifup

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
}

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

# Determining if the interface is a bridge:
if [ "x${BRIDGE}" = "xyes" ]; then
    check_brctl
    cmd_run_log ${BRCTL} addbr ${DEVICE} &&
    cmd_run_log ${BRCTL} stp ${DEVICE} off || exit 1
fi

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

if [ "x${BOOTPROTO}" = "xwifi" ]; then
    # Bring interface up
    link_status=$(ip link show ${DEVICE})
    if [ -n "${link_status}" ]; then
        if ! echo "${link_status}" | grep -q UP; then
            cmd_run_log ip link set ${DEVICE} up
        fi
    fi

    if [ -f /var/run/wpa_supplicant/${DEVICE} ]; then
        echo "Stopping previous wpa_supplicant"
        killall wpa_supplicant
        rm /var/run/wpa_supplicant/${DEVICE}
    fi

    wpa_supplicant -B -c /etc/wpa_supplicant.conf -i wlan0
    count=0
    while ! wpa_cli -i wlan0 status | grep "wpa_state=COMPLETED"; do
        echo "Waiting for wpa_supplicant to complete"
        sleep 1

        let count=count+1
        if [ $count -gt 10 ]; then
            echo "wpa_supplicant failure"
            exit ${EXIT_CODE_WARNING}
        fi
    done

    BOOTPROTO=dhcp
fi

if [ "x${BOOTPROTO}" = "xdhcp" ]; then
    # DHCP configuration

    # Load DHCP client parameters
    source /etc/sysconfig/network/dhcp-client

    # Make sure no file named `/var/run/dhclient.pid' remains.
    if [ -f "/var/run/dhclient.pid" ]; then
	rm -f /var/run/dhclient.pid
    fi

    if [ ! -x "${DHCP_PROG}" ]; then
	echo "Program \"${DHCP_PROG}\" is not executable."
        exit ${EXIT_CODE_FAILURE}
    fi

    cmd_run_log ${DHCP_PROG} ${DHCP_START} ${DEVICE}
elif [ x${BOOTPROTO} = "xstatic" ]; then
    # Static configuration
    cmd_run_log ip addr add ${IPADDR}/${PREFIX_LENGTH} dev ${DEVICE} brd + ${IFSCOPE} &&
    cmd_run_log ip link set ${DEVICE} up

    if [ -n "${GATEWAY}" ]; then
	if ip route | grep -q default; then
	    msg_log "Gateway already setup; skipping."
	else
	    cmd_run_log_box "Adding default route to gateway ${GATEWAY}" \
                ip route add default via ${GATEWAY} dev ${DEVICE}
	fi
    fi
elif [ x${BOOTPROTO} = "xpppoe" ]; then
    # PPPoE configuration
    cmd_run_log pppoe-start
else
    exit 1
fi

exit $?