#! /bin/bash
#
# chkconfig: - 09 91
# description: Initialize the shorewall firewall at boot time
#
### BEGIN INIT INFO
# Provides: shorewall-init
# Required-Start: $local_fs
# Required-Stop:  $local_fs
# Default-Start:
# Default-Stop:	  0 1 2 3 4 5 6
# Short-Description: Initialize the shorewall firewall at boot time
# Description:       Place the firewall in a safe state at boot time
#                    prior to bringing up the network.  
### END INIT INFO
#determine where the files were installed

. /usr/share/shorewall/shorewallrc

prog="shorewall-init"
logger="logger -i -t $prog"
lockfile="/var/lock/subsys/shorewall-init"

# Source function library.
. /etc/rc.d/init.d/functions

# Get startup options (override default)
OPTIONS=

# check if shorewall-init is configured or not
if [ -f "/etc/sysconfig/shorewall-init" ]; then
    . /etc/sysconfig/shorewall-init
else
    echo "/etc/sysconfig/shorewall-init not found"
    exit 6
fi

# set the STATEDIR variable
setstatedir() {
    local statedir
    if [ -f ${CONFDIR}/${PRODUCT}/vardir ]; then
	statedir=$( . /${CONFDIR}/${PRODUCT}/vardir && echo $VARDIR )
    fi

    [ -n "$statedir" ] && STATEDIR=${statedir} || STATEDIR=${VARLIB}/${PRODUCT}

    if [ -x ${STATEDIR}/firewall ]; then
	return 0
    elif [ $PRODUCT = shorewall ]; then
	${SBINDIR}/shorewall compile
    elif [ $PRODUCT = shorewall6 ]; then
	${SBINDIR}/shorewall -6 compile
    else
	return 1
    fi
}

# Initialize the firewall
start () {
    local PRODUCT
    local STATEDIR

    if [ -z "$PRODUCTS" ]; then
	echo "No firewalls configured for shorewall-init"
	failure
	return 6 #Not configured
    fi

    printf "Initializing \"Shorewall-based firewalls\": "

    if [ -n "$SAVE_IPSETS" -a -f "$SAVE_IPSETS" ]; then
	ipset -R < "$SAVE_IPSETS"
    fi

    for PRODUCT in $PRODUCTS; do
	setstatedir
	retval=$?

	if [ $retval -eq 0 ]; then
	    ${STATEDIR}/firewall ${OPTIONS} stop 2>&1 | $logger
	    retval=${PIPESTATUS[0]}
	    [ $retval -ne 0 ] && break
	else
	    retval=6 #Product not configured
	    break
	fi
    done

    if [ $retval -eq 0 ]; then
	touch $lockfile 
	success
    else
	failure
    fi
    echo
    return $retval
}

# Clear the firewall
stop () {
    local PRODUCT
    local STATEDIR

    printf "Clearing \"Shorewall-based firewalls\": "

    for PRODUCT in $PRODUCTS; do
	setstatedir
	retval=$?

	if [ $retval -eq 0 ]; then
	    ${STATEDIR}/firewall ${OPTIONS} clear 2>&1 | $logger
	    retval=${PIPESTATUS[0]}
	    [ $retval -ne 0 ] && break
	else
	    retval=6 #Product not configured
	    break
	fi
    done

    if [ $retval -eq 0 ]; then
	if [ -n "$SAVE_IPSETS" ]; then
	    mkdir -p $(dirname "$SAVE_IPSETS")
	    if ipset -S > "${SAVE_IPSETS}.tmp"; then
		grep -qE -- '^(-N|create )' "${SAVE_IPSETS}.tmp" && mv -f "${SAVE_IPSETS}.tmp" "$SAVE_IPSETS" || rm -f "${SAVE_IPSETS}.tmp"
	    else
		rm -f "${SAVE_IPSETS}.tmp"
	    fi
	fi

	rm -f $lockfile
	success
    else
	failure
    fi
    echo
    return $retval
}

status_q() {
    status > /dev/null 2>&1
}

case "$1" in
    start)
	status_q && exit 0
	$1
	;;
    stop)
	status_q || exit 0
	$1
	;;
    restart|reload|force-reload|condrestart|try-restart)
	echo "Not implemented"
	exit 3
	;;
    status)
	status $prog
	;;
  *)
	echo "Usage: $0 {start|stop|status}"
	exit 1
esac

exit 0