#!/bin/sh
#
#    tnldown - tunnel configuration script
#    Copyright (C) 1999, 2000 Arkadiusz Miśkiewicz <misiek@pld-linux.org>
#
#    This program is free software; you can redistribute it and/or modify
#    it under the terms of the GNU General Public License as published by
#    the Free Software Foundation; either version 2 of the License, or
#    (at your option) any later version.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU General Public License for more details.
#
#    You should have received a copy of the GNU General Public License
#    along with this program; if not, write to the Free Software
#    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
#
#

. /etc/sysconfig/network
. /etc/rc.d/init.d/functions
. /lib/rc-scripts/functions.network

DEV=$1

[ -z "$DEV" ] && {
	nls "Usage: %s <device name>" "tnldown" >&2
	exit 1
}

TNLCONFIGS=$(LC_ALL=C ls /etc/sysconfig/interfaces/tnlcfg-* 2>/dev/null | grep -vE '~$')
TNLCONFIGS=$(grep -LE '^#!' $TNLCONFIGS)
CONFIG=$(grep -lE "^DEVICE=[\"\']*$DEV[\"\']*\$" $TNLCONFIGS)

if [ -z "$CONFIG" ]; then
	CONFIG="$DEV"
fi

if false; then
	[ -f "/etc/sysconfig/interfaces/$CONFIG" ] || CONFIG=tnlcfg-$CONFIG
	[ -f "/etc/sysconfig/interfaces/$CONFIG" ] || {
		echo "usage: tnldown <device name>" >&2
		exit 1
	}
fi

source_config

case "${MODE}" in
  sit|four)
	is_no "${IPV6_NETWORKING}" && exit 0
	is_no "${IPV6_TUNNELCONFIG}" && exit 0
	;;
  ipip)
	is_no "${IPV4_NETWORKING}" && exit 0
	;;
  gre)
	is_no "${IPV4_NETWORKING}" && exit 0
	;;
  ipxip|ipipx)
	is_no "${IPX}" && exit 0
	;;
esac

RESULT=0

case "${MODE}" in
  ipip|sit|gre)
	ip link set ${DEVICE} down
	ip tunnel del ${DEVICE}
	RESULT=$?
	;;
  four)
	ip link set ${DEVICE} down
	fourcfg del ${DEVICE}
	RESULT=$?
	;;
  ipxip|ipipx)
	;;
esac

exit $RESULT