#! /bin/bash

mii_check() {
    local conn_state=$(mii-tool $1 2> /dev/null)
    local ret=$?
    if echo $conn_state|grep "no link" &> /dev/null; then
        if [ $ret -eq 0 ]; then
            return 1
        fi
    fi
    return 0
}

ethernet_up() {

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

	if ! mii_check $INTERFACE; then
        err "No connection available"	
    	return 1
    fi
    
    case $IP in
    dhcp)
        # Check if DHCP_TIMEOUT was set if not set a default value
        [ -z $DHCP_TIMEOUT ] && DHCP_TIMEOUT=10

        if checkyesno $DHCLIENT; then
            rm -r /var/run/dhclient-${INTERFACE}.pid >/dev/null 2>&1
            if ! dhclient -q -e TIMEOUT=$DHCP_TIMEOUT -pf /var/run/dhclient-${INTERFACE}.pid; then
                err "DHCP IP lease attempt failed"
                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 ] && DHCP_OPTIONS="-R $DHCP_OPTIONS"
            # Start dhcpcd
            if ! dhcpcd -L -t $DHCP_TIMEOUT $DHCP_OPTIONS $INTERFACE; then
                err "DHCP IP lease attempt failed"
                return 1
            fi 
        fi
        # TODO: add support for $section:ifconfig for other stuff, like mtu or mac?
        ;;
    static)
        if ! ifconfig $INTERFACE $IFOPTS up; then
            err "Could not bring interface up"
            return 1
        fi

        # bring up the default route (gateway)
        if [ "$GATEWAY" ]; then
            if ! route add default gw $GATEWAY; then
                err "Adding gateway $GATEWAY failed"
                return 1
            fi 
        fi
        ;;
    esac

    # set the hostname
    if [ "$HOSTNAME" ]; then
        if ! hostname $HOSTNAME; then
            err "Cannot set hostname"
            return 1
        fi
    fi

    # Generate a new resolv.conf
    if [ "$DNS1" ]; then
        : >/etc/resolv.conf 
        [ "$DOMAIN" ] && echo "domain $DOMAIN"   >>/etc/resolv.conf
        [ "$SEARCH" ] && echo "search $SEARCH"   >>/etc/resolv.conf
        [ "$DNS1" ]   && echo "nameserver $DNS1" >>/etc/resolv.conf
        [ "$DNS2" ]   && echo "nameserver $DNS2" >>/etc/resolv.conf
    fi
}

ethernet_down() {
    case $IP in
    dhcp)
        if checkyesno $DHCLIENT; then
            if [ -f /var/run/dhclient-${INTERFACE}.pid ]; then
                kill `cat /var/run/dhclient-${INTERFACE}.pid`
            fi
        else
            if [ -f /var/run/dhcpcd-${INTERFACE}.pid ]; then
                dhcpcd -x $INTERFACE
            fi
        fi
        ;;
    static)
        [ "$GATEWAY" ] && route del default gw $GATEWAY
        ;;
    esac
    ifconfig $INTERFACE 0.0.0.0
}

ethernet_clean_scope() {
    unset DOMAIN SEARCH DNS1 DNS2
    unset GATEWAY IFOPTS HOSTNAME DHCP_OPTIONS DHCP_TIMEOUT DHCLIENT
    unset INTERFACE CONNECTION
}
# vim: set ts=4 et sw=4: