#! /bin/sh
#
# network 1.54 1999/07/28 17:55:14 (David Hinds)
#
# Initialize or shutdown a PCMCIA ethernet adapter
#
# This script should be invoked with two arguments.  The first is the
# action to be taken, either "start", "stop", or "restart".  The
# second is the network interface name.
#
# The script passes an extended device address to 'network.opts' in
# the ADDRESS variable, to retrieve device-specific configuration
# options.  The address format is "scheme,socket,instance,hwaddr"
# where "scheme" is the current PCMCIA device configuration scheme,
# "socket" is the socket number, "instance" is used to number multiple
# interfaces in a single socket, and "hwaddr" is the card's hardware
# ethernet address.
#

if [ -r ./shared ] ; then . ./shared ; else . /etc/pcmcia/shared ; fi

# Get device attributes
get_info $DEVICE
HWADDR=`/sbin/ifconfig $DEVICE | sed -n -e 's/.*addr \([^ ]*\) */\1/p'`

# Load site-specific settings
ADDRESS="$SCHEME,$SOCKET,$INSTANCE,$HWADDR"
start_fn () { return; }
stop_fn () { return; }
. $0.opts

RESOLV=/etc/resolv.conf

case "$ACTION" in

'start')

    test "$IF_PORT" && /sbin/ifport $DEVICE $IF_PORT

    if is_true $BOOTP ; then
	/sbin/ifconfig $DEVICE up 0.0.0.0
	/sbin/route add default dev $DEVICE
	eval `/sbin/bootpc --bootfile '' --returniffail \
	    --timeoutwait 10 --dev $DEVICE`
	/sbin/route del default
	/sbin/ifconfig $DEVICE down
	if [ "$GATEWAYS" ] ; then
	    set - $GATEWAYS ; GATEWAY=$1
	fi
    fi

    if is_true $DHCP ; then
	/sbin/ifconfig $DEVICE up 0.0.0.0
	/sbin/route add default dev $DEVICE
	if /sbin/dhcpcd -V 2>&1 | grep -q DHCP ; then
	    /sbin/dhcpcd $DEVICE >/dev/null 2>&1 || exit 1
	else
	    # Jump through hoops for lame 0.70-era dhcpcd
	    L=/var/run/dhcp-lock-$DEVICE
	    /bin/echo "#!/bin/sh\nrm $L" > $L ; chmod +x $L
	    /sbin/dhcpcd -c $L $DEVICE >/dev/null 2>&1
	    for t in 0 1 2 3 4 5 6 7 8 9 ; do
		sleep 2 ; if [ ! -e $L ] ; then break ; fi
	    done
	    rm -f $L
	    if [ -e /etc/dhcpc/resolv.conf ] ; then
		echo "# $DEVICE begin" > $RESOLV.N
		cat /etc/dhcpc/resolv.conf >> $RESOLV.N
		echo "# $DEVICE end" >> $RESOLV.N
		cat $RESOLV >> $RESOLV.N ; mv $RESOLV.N $RESOLV
	    fi
	fi
    fi
    
    if [ "$IPADDR" ] ; then

	# Basic network setup
	BC=${BROADCAST:+broadcast $BROADCAST}
	/sbin/ifconfig $DEVICE up $IPADDR netmask $NETMASK $BC

	if [ "$NETWORK" ] ; then
	    /sbin/ifuser $DEVICE $NETWORK || \
		/sbin/route add -net $NETWORK netmask $NETMASK dev $DEVICE
	elif [ "$GATEWAY" ] ; then
	    /sbin/ifuser $DEVICE $GATEWAY || \
		/sbin/route add $GATEWAY $DEVICE
	fi

	test "$GATEWAY" && /sbin/route add default gw $GATEWAY metric 1

	# Update DNS stuff
	if [ "$DOMAIN$SEARCH$DNSSRVS$DNS_1$DNS_2$DNS_3" ] ; then
	    echo "# $DEVICE begin" > $RESOLV.N
	    test "$DOMAIN" && echo "domain $DOMAIN" >> $RESOLV.N
	    test "$SEARCH" && echo "search $SEARCH" >> $RESOLV.N
	    for DNS in $DNSSRVS $DNS_1 $DNS_2 $DNS_3 ; do
		echo "nameserver $DNS" >> $RESOLV.N
	    done
	    echo "# $DEVICE end" >> $RESOLV.N
	    sed -e "/# $DEVICE begin/,/# $DEVICE end/d" $RESOLV >> $RESOLV.N
	    mv $RESOLV.N $RESOLV
	fi

	# Handle NFS mounts
	if [ "$MOUNTS" ] ; then
	    for MT in $MOUNTS ; do mount -v $MT ; done
	fi

    fi

    if [ "$IPX_NETNUM" ] ; then
	ipx_interface add $DEVICE $IPX_FRAME $IPX_NETNUM
    fi

    start_fn $DEVICE
    ;;

'stop')

    stop_fn $DEVICE
    
    if is_true $BOOTP || is_true $DHCP || [ "$IPADDR" ] ; then

	# Shut down all NFS mounts on this interface
	nfsstop ()
	{
	    while read HOST MT ; do
		nfsstop
		if /sbin/ifuser $DEVICE $HOST ; then
		    fuser -s -k -m $MT
		    umount -v $MT
		fi
	    done
	}
	mount -t nfs | sed -e 's/:.* on \(.*\) type .*/ \1/' | nfsstop

	test "$IPX_NETNUM" && ipx_interface del $DEVICE $IPX_FRAME

	# Remove nameservers
	if fgrep -q "# $DEVICE begin" $RESOLV ; then
	    sed -e "/# $DEVICE begin/,/# $DEVICE end/d"	$RESOLV > $RESOLV.N
	    mv $RESOLV.N $RESOLV
	fi

	if is_true $DHCP ; then
	    kill -TERM `cat /var/run/dhcpcd-$DEVICE.pid`
	    sleep 2
	    /sbin/dhcpcd -V 2>&1 | grep -q DHCP || \
		rm -f /var/run/dhcpcd-$DEVICE.pid
	fi
    fi
    /sbin/ifconfig $DEVICE down
    ;;

'check')
    /sbin/ifconfig $DEVICE | grep -q RUNNING || exit 0

    # Check for any in-use NFS mounts
    nfscheck ()
    {
	while read HOST MT ; do
	    /sbin/ifuser $DEVICE $HOST && fuser -sm $MT && exit 1
	done
    }
    mount -t nfs | sed -e 's/:.* on \(.*\) type .*/ \1/' | nfscheck

    # Check for active TCP or UDP connections
    getdests ()
    {
    	IFS=" :" ; read A ; read A
	while read A B C D E HOST PORT STATE ; do
	    if [ "$STATE" != "FIN_WAIT1" -a "$STATE" != "FIN_WAIT2" \
		-a "$STATE" != "CLOSE_WAIT" -a "$STATE" != "TIME_WAIT" \
		-a "$HOST" != "127.0.0.1" -a "$HOST" != "0.0.0.0" \
		-a "$PORT" != "*" ] ; then
		echo $HOST
	    fi
	done
    }
    DESTS=`netstat -ntuw | getdests`
    /sbin/ifuser $DEVICE $DESTS && exit 1
    ;;

'cksum')
    chk_simple "$3,$SOCKET,$INSTANCE,$HWADDR" || exit 1
    ;;

'restart')
    test "$IPADDR" && /sbin/ifconfig $DEVICE down up
    ;;

'suspend'|'resume')
    ;;

*)
    usage
    ;;

esac

exit 0