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shorewall_code/Shorewall/Contrib/swping.init

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#!/bin/sh
# Shorewall WAN Interface monitor - V4.4
#
# This program is under GPL [http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt]
#
# (c) 1999,2000,2001,2002,2003,2004,2005 - Tom Eastep (teastep@shorewall.net)
#
# On most distributions, this file should be called /etc/init.d/shorewall.
#
# Complete documentation is available at http://shorewall.net
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of Version 2 of the GNU General Public License
# as published by the Free Software Foundation.
#
# 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
# Commands are:
#
# swping start Starts the monitor
# swping restart Restarts the monitor
# swping stop Stops the monitor
# swping status Displays monitor status
#
### BEGIN INIT INFO
# Provides: swping
# Required-Start: shorewall
# Should-Start:
# Required-Stop:
# Default-Start: 2 3 5
# Default-Stop: 0 1 6
# Description: Monitor External links and restart Shorewall when a link goes up or down.
### END INIT INFO
PROG=/usr/local/sbin/swping # The 'swping' script.
STATEDIR=/var/lib/shorewall/ # Where to maintain the '.pid' file.
start() {
echo "Starting swping."
if [ -f $STATEDIR/swping.pid ] && ps -p $(cat $STATEDIR/swping.pid) > /dev/null 2>&1; then
echo "swping is already running" >&2
exit 0
fi
/usr/local/sbin/swping >> /var/log/swping &
if [ $? -eq 0 ]; then
echo $! > $STATEDIR/swping.pid
echo "Done."
else
rm -f $STATEDIR/swping.pid
fi
}
stop() {
echo "Stoping swping."
if [ -f $STATEDIR/swping.pid ]; then
kill -9 $(cat $STATEDIR/swping.pid)
rm -f $STATEDIR/swping.pid
fi
echo "Done."
}
command="$1"
case "$command" in
start)
start
;;
stop)
stop
;;
restart)
stop
start
;;
status)
if [ -f $STATEDIR/swping.pid ]; then
echo "swping is running"
exit 0
else
echo "swping is stopped"
exit 3
fi
;;
*)
echo "Usage /etc/init.d/swping start|stop|restart|status"
;;
esac