#! /bin/bash
. /usr/lib/network/network

report_iproute()
{
    report_fail "$*"
    bring_interface down "$INTERFACE"
    exit 1
}

ethernet_up() {
    load_profile "$1"

    if [[ ! -e "/sys/class/net/$INTERFACE" ]]; then
        if ! echo "$INTERFACE" | fgrep -q ":"; then
            report_iproute "Interface $INTERFACE does not exist"
        fi
    fi

    report_debug ethernet_iproute_up ifup
    bring_interface up "$INTERFACE"


    if ! checkyesno "${SKIPNOCARRIER:-no}" && ip link show dev "$INTERFACE" | fgrep -q "NO-CARRIER"; then
        sleep ${CARRIER_TIMEOUT:-2} # Some cards are plain slow to come up. Don't fail immediately.
        if ip link show dev "$INTERFACE" | fgrep -q "NO-CARRIER"; then
            report_iproute "No connection"
        fi
    fi

    if checkyesno "${AUTH8021X:-no}"; then
        . "$SUBR_DIR/8021x"
        [[ -z "$WPA_CONF" ]] && WPA_CONF="/etc/wpa_supplicant.conf"
        [[ -z "$WPA_DRIVER" ]] && WPA_DRIVER="wired"

        report_debug ethernet_iproute_up start_wpa "$INTERFACE" "$WPA_CONF" "$WPA_DRIVER" "$WPA_OPTS"
        if ! start_wpa "$INTERFACE" "$WPA_CONF" "$WPA_DRIVER" "$WPA_OPTS"; then
            report_fail "wpa_supplicant did not start, possible configuration error"
            return 1
        fi

        if ! wpa_check "$INTERFACE" 15 "ASSOCIATED"; then
            bring_interface down "$INTERFACE"
            report_fail "WPA Authentication/Association Failed"
            return 1
        fi
    fi

    if [[ -z "$IP" && -z "$IP6" ]]; then
        report_iproute "At least one of IP or IP6 should be specified"
        return 1
    fi

    case "$IP" in
    dhcp)
        if checkyesno "${DHCLIENT:-no}"; then
            rm -r "/var/run/dhclient-${INTERFACE}.pid" >/dev/null 2>&1
            report_debug ethernet_up dhclient -q -e TIMEOUT="${DHCP_TIMEOUT:-10}" -pf "/var/run/dhclient-$INTERFACE.pid" "$INTERFACE"
            if ! dhclient -q -e TIMEOUT="${DHCP_TIMEOUT:-10}" -pf "/var/run/dhclient-${INTERFACE}.pid" ${DHCLIENT_OPTIONS} "$INTERFACE"; then
                report_fail "DHCP IP lease attempt failed."
                stop_80211x
                return 1
            fi
        else
            # Clear remaining pid files.
            rm -f "/var/run/dhcpcd-$INTERFACE".{pid,cache} >/dev/null 2>&1
            # If using own dns, tell dhcpcd to NOT replace resolv.conf
            [[ -n "$DNS1" || -n "$DNS" ]] && DHCP_OPTIONS="-C resolv.conf $DHCP_OPTIONS"
            # Start dhcpcd
            report_debug ethernet_up dhcpcd -qL -t "${DHCP_TIMEOUT:-10}" $DHCP_OPTIONS "$INTERFACE"
            dhcpcd -qL -t "${DHCP_TIMEOUT:-10}" $DHCP_OPTIONS "$INTERFACE" 2>&1 | report_debug "$(cat)"
            if [[ "$PIPESTATUS" -ne 0 ]]; then
                report_fail "DHCP IP lease attempt failed."
                stop_80211x
                return 1
            fi
        fi
        ;;
    static)
        if [[ -n "$ADDR" ]]; then
            [[ -z $NETMASK ]] && NETMASK=24
            report_debug ethernet_iproute_up ip addr add "$ADDR/$NETMASK" brd + dev "$INTERFACE" 
            if ! ip addr add "$ADDR/$NETMASK" brd + dev "$INTERFACE"; then
                report_iproute "Could not configure interface"
            fi
        fi
        if [[ -n "$IFOPTS" ]]; then
            if ! ifconfig "$INTERFACE" $IFOPTS up; then
                report_iproute "Bringing interface up failed."
                return 1
            fi
        fi
        if [[ -n "$ROUTES" ]]; then
            for route in "${ROUTES[@]}"; do
                report_debug ethernet_iproute_up ip route add $route dev "$INTERFACE"
                if ! ip route add $route dev "$INTERFACE" ; then
                    report_iproute "Adding route '$route' failed"
                fi
            done
        fi
        if [[ -n "$GATEWAY" ]]; then
            report_debug ethernet_iproute_up ip route add default via "$GATEWAY"
            if ! ip route add default via "$GATEWAY"; then
                report_iproute "Adding gateway $GATEWAY failed"
            fi
        fi
        ;;
    "")
        ;;
      *)
        report_iproute "IP must be either 'dhcp' or 'static'"
        ;;
    esac

    if [[ -n "$IPCFG" ]]; then
        for line in "${IPCFG[@]}"; do

            report_debug ethernet_iproute_up ip "$line"
            if ! ip $line; then
                report_iproute "Could not configure interface ($line)."
            fi
        done
    fi

    case "$IP6" in
    static)
        if [[ -n "$ADDR6" ]]; then
            [[ -z $PREFIXLEN ]] && PREFIXLEN=64
            report_debug ethernet_iproute_up ip -6 addr add "$ADDR6/$PREFIXLEN" dev "$INTERFACE" 
            if ! ip -6 addr add "$ADDR6/$PREFIXLEN" dev "$INTERFACE"; then
                report_iproute "Could not configure interface"
            fi
        fi
        if [[ -n "$GATEWAY6" ]]; then
            report_debug ethernet_iproute_up ip -6 route add default via "$GATEWAY6"
            if ! ip -6 route add default via "$GATEWAY6"; then
                report_iproute "Adding gateway $GATEWAY6 failed"
            fi
        fi
        ;;
    "")
        ;;
    *)
        report_iproute "IP6 must be 'static'"
        ;;
    esac

    # Set hostname
    if [[ -n "$HOSTNAME" ]]; then
        report_debug ethernet_iproute_up hostname "$HOSTNAME"
        if ! echo "$HOSTNAME" > /proc/sys/kernel/hostname; then
            report_iproute "Cannot set hostname to $HOSTNAME"
        fi
    fi

    # Generate a new resolv.conf
    if [[ -n "$DNS" ]]; then
        : >/etc/resolv.conf
        [[ -n "$DOMAIN" ]] && echo "domain $DOMAIN"   >>/etc/resolv.conf
        [[ -n "$SEARCH" ]] && echo "search $SEARCH"   >>/etc/resolv.conf

        for dns in "${DNS[@]}"; do
            echo "nameserver $dns" >>/etc/resolv.conf
        done
    elif [[ -n "$DNS1" ]]; then # support older 'ethernet' syntax.
        : >/etc/resolv.conf
        [[ -n "$DOMAIN" ]] && echo "domain $DOMAIN"   >>/etc/resolv.conf
        [[ -n "$SEARCH" ]] && echo "search $SEARCH"   >>/etc/resolv.conf
        [[ -n "$DNS1" ]]   && echo "nameserver $DNS1" >>/etc/resolv.conf
        [[ -n "$DNS2" ]]   && echo "nameserver $DNS2" >>/etc/resolv.conf
    fi

    return 0
}

ethernet_down() {
    load_profile "$1"

    if [[ "$IP" == "dhcp" ]]; then
        if [[ -f "/var/run/dhcpcd-${INTERFACE}.pid" ]]; then
            report_debug ethernet_down dhcpcd -qx "$INTERFACE"
            dhcpcd -qk "$INTERFACE" &>/dev/null
        fi
    fi

    stop_80211x

    report_debug ethernet_down if_down
    if [[ "$CONNECTION" == "wireless" ]]; then
        bring_interface flush "$INTERFACE"
    else
        bring_interface down "$INTERFACE"
    fi
    return 0 
}

# Returns status of profile - is it still functional?
ethernet_status() {
    if ! ip link show dev "$INTERFACE" | fgrep -q "state UP"; then
        return 1
    fi
}

# Stop wpa_supplicant if neccessary 
stop_80211x() {
    if checkyesno "${AUTH8021X:-no}"; then
        . "$SUBR_DIR/8021x"
        report_debug ethernet_down stop_wpa "$INTERFACE"
        stop_wpa "$INTERFACE"
    fi
}

ethernet_$1 "$2"
exit $?
# vim: set ts=4 et sw=4: