forked from extern/shorewall_code
877 lines
17 KiB
Bash
Executable File
877 lines
17 KiB
Bash
Executable File
#!/bin/sh
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#
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# Shorewall Lite Packet Filtering Firewall Control Program - V4.4
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#
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# This program is under GPL [http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt]
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#
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# (c) 2006,2007,2008,2009,2010,2011 - Tom Eastep (teastep@shorewall.net)
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#
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# This file should be placed in /sbin/shorewall-lite.
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#
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# Shorewall documentation is available at http://shorewall.net
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of Version 2 of the GNU General Public License
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# as published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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#
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# If an error occurs while starting or restarting the firewall, the
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# firewall is automatically stopped.
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#
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# Set the configuration variables from shorewall-lite.conf
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#
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get_config() {
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[ -n "$PATH" ] || PATH=/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/bin:/usr/local/sbin
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[ -z "$LOGFILE" ] && LOGFILE=/var/log/messages
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if ( ps ax 2> /dev/null | grep -v grep | qt grep 'syslogd.*-C' ) ; then
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g_logread="logread | tac"
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elif [ -r $LOGFILE ]; then
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g_logread="tac $LOGFILE"
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else
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echo "LOGFILE ($LOGFILE) does not exist!" >&2
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exit 2
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fi
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#
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# See if we have a real version of "tail" -- use separate redirection so
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# that ash (aka /bin/sh on LRP) doesn't crap
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#
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if ( tail -n5 /dev/null > /dev/null 2> /dev/null ) ; then
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realtail="Yes"
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else
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realtail=""
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fi
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[ -n "$FW" ] || FW=fw
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if [ $g_family -eq 4 ]; then
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if [ -n "$IPTABLES" ]; then
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if [ ! -x "$IPTABLES" ]; then
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echo " ERROR: The program specified in IPTABLES does not exist or is not executable" >&2
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exit 2
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fi
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else
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IPTABLES=$(mywhich iptables 2> /dev/null)
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if [ -z "$IPTABLES" ] ; then
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echo " ERROR: Can't find iptables executable" >&2
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exit 2
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fi
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fi
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g_tool=#$IPTABLES
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else
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if [ -n "$IP6TABLES" ]; then
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if [ ! -x "$IP6TABLES" ]; then
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echo " ERROR: The program specified in IP6TABLES does not exist or is not executable" >&2
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exit 2
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fi
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else
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IP6TABLES=$(mywhich ip6tables 2> /dev/null)
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if [ -z "$IP6TABLES" ] ; then
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echo " ERROR: Can't find ip6tables executable" >&2
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exit 2
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fi
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fi
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g_tool=$IP6TABLES
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fi
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if [ -n "$SHOREWALL_SHELL" ]; then
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if [ ! -x "$SHOREWALL_SHELL" ]; then
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echo " WARNING: The program specified in SHOREWALL_SHELL does not exist or is not executable; falling back to /bin/sh" >&2
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SHOREWALL_SHELL=/bin/sh
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fi
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fi
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[ -n "$RESTOREFILE" ] || RESTOREFILE=restore
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validate_restorefile RESTOREFILE
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[ -n "${VERBOSITY:=2}" ]
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[ -n "$g_use_verbosity" ] && VERBOSITY=$g_use_verbosity || VERBOSITY=$(($g_verbose_offset + $VERBOSITY))
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if [ $VERBOSITY -lt -1 ]; then
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VERBOSITY=-1
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elif [ $VERBOSITY -gt 2 ]; then
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VERBOSITY=2
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fi
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g_hostname=$(hostname 2> /dev/null)
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IP=$(mywhich ip 2> /dev/null)
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if [ -z "$IP" ] ; then
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echo " ERROR: Can't find ip executable" >&2
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exit 2
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fi
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IPSET=ipset
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TC=tc
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}
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#
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# Verify that we have a compiled firewall script
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#
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verify_firewall_script() {
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if [ ! -f $g_firewall ]; then
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echo " ERROR: $g_product is not properly installed" >&2
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if [ -L $g_firewall ]; then
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echo " $g_firewall is a symbolic link to a" >&2
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echo " non-existant file" >&2
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else
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echo " The file $g_firewall does not exist" >&2
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fi
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exit 2
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fi
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}
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#
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# Fatal error
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#
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startup_error() {
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echo " ERROR: $@" >&2
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kill $$
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exit 1
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}
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#
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# Start Command Executor
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#
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start_command() {
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local finished
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finished=0
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do_it() {
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local rc
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rc=0
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[ -n "$nolock" ] || mutex_on
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if [ -x ${LITEDIR}/firewall ]; then
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run_it ${LITEDIR}/firewall $debugging start
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rc=$?
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else
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error_message "${LITEDIR}/firewall is missing or is not executable"
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logger -p kern.err "ERROR:$g_product start failed"
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rc=2
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fi
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[ -n "$nolock" ] || mutex_off
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exit $rc
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}
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verify_firewall_script
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if product_is_started; then
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if [ $g_family -eq 4 ]; then
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error_message "Shorewall is already running"
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else
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error_message "Shorewall6 is already running"
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fi
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exit 0
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fi
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while [ $finished -eq 0 -a $# -gt 0 ]; do
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option=$1
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case $option in
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-*)
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option=${option#-}
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while [ -n "$option" ]; do
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case $option in
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-)
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finished=1
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option=
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;;
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f*)
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g_fast=Yes
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option=${option#f}
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;;
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p*)
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[ -n "$(which conntrack)" ] || fatal_error "The '-p' option requires the conntrack utility which does not appear to be installed on this system"
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g_purge=Yes
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option=${option%p}
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;;
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*)
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usage 1
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;;
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esac
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done
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shift
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;;
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*)
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finished=1
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;;
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esac
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done
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case $# in
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0)
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;;
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*)
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usage 1
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;;
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esac
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if [ -n "$g_fast" ]; then
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if qt mywhich make; then
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export RESTOREFILE
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make -qf ${CONFDIR}/Makefile || g_fast=
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fi
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if [ -n "$g_fast" ]; then
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g_restorepath=${VARDIR}/$RESTOREFILE
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if [ -x $g_restorepath ]; then
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echo Restoring $g_product...
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run_it $g_restorepath restore
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date > ${VARDIR}/restarted
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progress_message3 $g_product restored from $g_restorepath
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else
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do_it
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fi
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else
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do_it
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fi
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else
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do_it
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fi
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}
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#
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# Restart Command Executor
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#
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restart_command() {
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local finished
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finished=0
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local rc
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rc=0
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verify_firewall_script
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while [ $finished -eq 0 -a $# -gt 0 ]; do
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option=$1
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case $option in
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-*)
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option=${option#-}
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while [ -n "$option" ]; do
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case $option in
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-)
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finished=1
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option=
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;;
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n*)
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g_noroutes=Yes
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option=${option#n}
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;;
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p*)
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[ -n "$(which conntrack)" ] || fatal_error "The '-p' option requires the conntrack utility which does not appear to be installed on this system"
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g_purge=Yes
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option=${option%p}
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;;
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*)
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usage 1
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;;
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esac
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done
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shift
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;;
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*)
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finished=1
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;;
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esac
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done
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case $# in
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0)
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;;
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*)
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usage 1
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;;
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esac
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[ -n "$nolock" ] || mutex_on
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if [ -x ${LITEDIR}/firewall ]; then
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run_it ${LITEDIR}/firewall $debugging restart
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rc=$?
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else
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error_message "${LITEDIR}/firewall is missing or is not executable"
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logger -p kern.err "ERROR:$g_product restart failed"
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rc=2
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fi
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[ -n "$nolock" ] || mutex_off
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return $rc
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}
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#
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# Give Usage Information
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#
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usage() # $1 = exit status
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{
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echo "Usage: $(basename $0) [debug|trace] [nolock] [ -q ] [ -v[-1|{0-2}] ] [ -t ] <command>"
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echo "where <command> is one of:"
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echo " add <interface>[:<host-list>] ... <zone>"
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echo " allow <address> ..."
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echo " clear"
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echo " delete <interface>[:<host-list>] ... <zone>"
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echo " disable <interface>"
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echo " drop <address> ..."
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echo " dump [ -x ]"
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echo " enable <interface>"
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echo " forget [ <file name> ]"
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echo " help"
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if [ $g_family -eq 4 ]; then
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echo " ipcalc { <address>/<vlsm> | <address> <netmask> }"
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echo " ipdecimal { <address> | <integer> }"
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echo " iprange <address>-<address>"
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fi
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echo " logdrop <address> ..."
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echo " logreject <address> ..."
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echo " logwatch [<refresh interval>]"
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echo " reject <address> ..."
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echo " reset [ <chain> ... ]"
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echo " restart [ -n ] [ -p ] [ -f ] [ <directory> ]"
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echo " restore [ -n ] [ <file name> ]"
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echo " save [ <file name> ]"
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echo " show [ -x ] [ -t {filter|mangle|nat} ] [ {chain [<chain> [ <chain> ... ]"
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echo " show [ -f ] capabilities"
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echo " show classifiers"
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echo " show config"
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echo " show connections"
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echo " show filters"
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echo " show ip"
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echo " show [ -m ] log [<regex>]"
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echo " show [ -x ] mangle|nat|raw|rawpost|routing"
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echo " show policies"
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echo " show tc [ device ]"
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echo " show vardir"
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echo " show zones"
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echo " start [ -f ] [ -p ] [ <directory> ]"
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echo " stop"
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echo " status"
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echo " version [ -a ]"
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echo
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exit $1
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}
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version_command() {
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local finished
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finished=0
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local all
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all=
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local product
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while [ $finished -eq 0 -a $# -gt 0 ]; do
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option=$1
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case $option in
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-*)
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option=${option#-}
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while [ -n "$option" ]; do
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case $option in
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-)
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finished=1
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option=
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;;
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a*)
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all=Yes
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option=${option#a}
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;;
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*)
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usage 1
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;;
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esac
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done
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shift
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;;
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*)
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finished=1
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;;
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esac
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done
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[ $# -gt 0 ] && usage 1
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echo $SHOREWALL_VERSION
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if [ -n "$all" ]; then
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for product in shorewall shorewall6 shorewall-lite shorewall6-lite shorewall-init; do
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if [ $product ~= $g_program] && [ -f /usr/share/$product/version ]; then
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echo "$product: $(cat /usr/share/$product/version)"
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fi
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done
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fi
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}
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#
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# Execution begins here
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#
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debugging=
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if [ $# -gt 0 ] && [ "$1" = "debug" -o "$1" = "trace" ]; then
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debugging=$1
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shift
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fi
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nolock=
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if [ $# -gt 0 ] && [ "$1" = "nolock" ]; then
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nolock=nolock
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shift
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fi
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g_ipt_options="-nv"
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g_fast=
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g_verbose_offset=0
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g_use_verbosity=
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g_noroutes=
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g_timestamp=
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g_recovering=
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g_purge=
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g_logread=
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#
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# Make sure that these variables are cleared
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#
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VERBOSE=
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VERBOSITY=
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finished=0
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while [ $finished -eq 0 ]; do
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[ $# -eq 0 ] && usage 1
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option=$1
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case $option in
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-)
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finished=1
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;;
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-*)
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option=${option#-}
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[ -z "$option" ] && usage 1
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while [ -n "$option" ]; do
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case $option in
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x*)
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g_ipt_options="-xnv"
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option=${option#x}
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;;
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q*)
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g_verbose_offset=$(($g_verbose_offset - 1 ))
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option=${option#q}
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;;
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f*)
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g_fast=Yes
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option=${option#f}
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;;
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v*)
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option=${option#v}
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case $option in
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-1*)
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g_use_verbosity=-1
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option=${option#-1}
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;;
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0*)
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g_use_verbosity=0
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option=${option#0}
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;;
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1*)
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g_use_verbosity=1
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option=${option#1}
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;;
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2*)
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g_use_verbosity=2
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option=${option#2}
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;;
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*)
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g_verbose_offset=$(($g_verbose_offset + 1 ))
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g_use_verbosity=
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;;
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esac
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;;
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n*)
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g_noroutes=Yes
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option=${option#n}
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;;
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t*)
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g_timestamp=Yes
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option=${option#t}
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;;
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-)
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finished=1
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option=
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;;
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*)
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usage 1
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;;
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esac
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done
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shift
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;;
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*)
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finished=1
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;;
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esac
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done
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if [ $# -eq 0 ]; then
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usage 1
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fi
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PATH=/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/bin:/usr/local/sbin
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MUTEX_TIMEOUT=
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g_program=$(basename $0)
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if [ $g_program = shorewall6-lite ]; then
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SHAREDIR=/usr/share/shorewall6-lite
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CONFDIR=/etc/shorewall6-lite
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g_product="Shorewall6 Lite"
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g_family=6
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g_base=shorewall6
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g_tool=ip6tables
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else
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g_program=shorewall-lite
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SHAREDIR=/usr/share/shorewall-lite
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CONFDIR=/etc/shorewall-lite
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g_product="Shorewall Lite"
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g_family=4
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g_base=shorewall
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g_tool=iptables
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fi
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g_libexec=share
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[ -f ${CONFDIR}/vardir ] && . ${CONFDIR}/vardir ]
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[ -n "${VARDIR:=/var/lib/${g_base}-lite}" ]
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[ -d $VARDIR ] || mkdir -p $VARDIR || fatal_error "Unable to create $VARDIR"
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version_file=$SHAREDIR/version
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for library in base cli; do
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. ${SHAREDIR}/lib.$library
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done
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ensure_config_path
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config=$(find_file ${g_base}-lite.conf)
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if [ -f $config ]; then
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if [ -r $config ]; then
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. $config
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else
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echo "Cannot read $config! (Hint: Are you root?)" >&2
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exit 1
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fi
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else
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echo "$config does not exist!" >&2
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exit 2
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fi
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ensure_config_path
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LITEDIR=${VARDIR}
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[ -f ${LITEDIR}/firewall.conf ] && . ${LITEDIR}/firewall.conf
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get_config
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g_firewall=$LITEDIR/firewall
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|
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if [ -f $version_file ]; then
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SHOREWALL_VERSION=$(cat $version_file)
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else
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echo " ERROR: $g_product is not properly installed" >&2
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echo " The file $version_file does not exist" >&2
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exit 1
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fi
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banner="$g_product $SHOREWALL_VERSION Status at $g_hostname -"
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|
|
case $(echo -e) in
|
|
-e*)
|
|
RING_BELL="echo \a"
|
|
ECHO_E="echo"
|
|
;;
|
|
*)
|
|
RING_BELL="echo -e \a"
|
|
ECHO_E="echo -e"
|
|
;;
|
|
esac
|
|
|
|
case $(echo -n "Testing") in
|
|
-n*)
|
|
ECHO_N=
|
|
;;
|
|
*)
|
|
ECHO_N=-n
|
|
;;
|
|
esac
|
|
|
|
COMMAND=$1
|
|
|
|
case "$COMMAND" in
|
|
start)
|
|
shift
|
|
start_command $@
|
|
;;
|
|
stop|reset|clear)
|
|
[ $# -ne 1 ] && usage 1
|
|
verify_firewall_script
|
|
[ -n "$nolock" ] || mutex_on
|
|
run_it $g_firewall $debugging $COMMAND
|
|
[ -n "$nolock" ] || mutex_off
|
|
;;
|
|
restart)
|
|
shift
|
|
restart_command @
|
|
;;
|
|
show|list)
|
|
shift
|
|
show_command $@
|
|
;;
|
|
status)
|
|
[ $# -eq 1 ] || usage 1
|
|
[ "$(id -u)" != 0 ] && fatal_error "The status command may only be run by root"
|
|
echo "$g_product $SHOREWALL_VERSION Status at $g_hostname - $(date)"
|
|
echo
|
|
if product_is_started ; then
|
|
echo "$g_product is running"
|
|
status=0
|
|
else
|
|
echo "$g_product is stopped"
|
|
status=4
|
|
fi
|
|
|
|
if [ -f ${VARDIR}/state ]; then
|
|
state="$(cat ${VARDIR}/state)"
|
|
case $state in
|
|
Stopped*|Closed*|Clear*)
|
|
status=3
|
|
;;
|
|
esac
|
|
else
|
|
state=Unknown
|
|
fi
|
|
echo "State:$state"
|
|
echo
|
|
exit $status
|
|
;;
|
|
dump)
|
|
shift
|
|
dump_command $@
|
|
;;
|
|
hits)
|
|
[ -n "$debugging" ] && set -x
|
|
shift
|
|
hits_command $@
|
|
;;
|
|
version)
|
|
shift
|
|
version_command $@
|
|
;;
|
|
logwatch)
|
|
logwatch_command $@
|
|
;;
|
|
drop)
|
|
[ -n "$debugging" ] && set -x
|
|
[ $# -eq 1 ] && usage 1
|
|
if product_is_started ; then
|
|
[ -n "$nolock" ] || mutex_on
|
|
block DROP Dropped $*
|
|
[ -n "$nolock" ] || mutex_off
|
|
else
|
|
error_message "ERROR: $g_product is not started"
|
|
exit 2
|
|
fi
|
|
;;
|
|
logdrop)
|
|
[ -n "$debugging" ] && set -x
|
|
[ $# -eq 1 ] && usage 1
|
|
if product_is_started ; then
|
|
[ -n "$nolock" ] || mutex_on
|
|
block logdrop Dropped $*
|
|
[ -n "$nolock" ] || mutex_off
|
|
else
|
|
error_message "ERROR: $g_product is not started"
|
|
exit 2
|
|
fi
|
|
;;
|
|
reject|logreject)
|
|
[ -n "$debugging" ] && set -x
|
|
[ $# -eq 1 ] && usage 1
|
|
if product_is_started ; then
|
|
[ -n "$nolock" ] || mutex_on
|
|
block $COMMAND Rejected $*
|
|
[ -n "$nolock" ] || mutex_off
|
|
else
|
|
error_message "ERROR: $g_product is not started"
|
|
exit 2
|
|
fi
|
|
;;
|
|
allow)
|
|
allow_command $@
|
|
;;
|
|
add)
|
|
get_config
|
|
shift
|
|
add_command $@
|
|
;;
|
|
delete)
|
|
get_config
|
|
shift
|
|
add_command $@
|
|
;;
|
|
disable|enable)
|
|
get_config Yes
|
|
if product_is_started; then
|
|
run_it ${VARDIR}/firewall $g_debugging $@
|
|
else
|
|
fatal_error "Shorewall is not running"
|
|
fi
|
|
;;
|
|
save)
|
|
[ -n "$debugging" ] && set -x
|
|
|
|
case $# in
|
|
1)
|
|
;;
|
|
2)
|
|
RESTOREFILE="$2"
|
|
validate_restorefile '<restore file>'
|
|
;;
|
|
*)
|
|
usage 1
|
|
;;
|
|
esac
|
|
|
|
g_restorepath=${VARDIR}/$RESTOREFILE
|
|
|
|
[ "$nolock" ] || mutex_on
|
|
|
|
save_config
|
|
|
|
[ "$nolock" ] || mutex_off
|
|
;;
|
|
forget)
|
|
case $# in
|
|
1)
|
|
;;
|
|
2)
|
|
RESTOREFILE="$2"
|
|
validate_restorefile '<restore file>'
|
|
;;
|
|
*)
|
|
usage 1
|
|
;;
|
|
esac
|
|
|
|
|
|
g_restorepath=${VARDIR}/$RESTOREFILE
|
|
|
|
if [ -x $g_restorepath ]; then
|
|
rm -f $g_restorepath
|
|
rm -f ${g_restorepath}-iptables
|
|
rm -f ${g_restorepath}-ipsets
|
|
echo " $g_restorepath removed"
|
|
elif [ -f $g_restorepath ]; then
|
|
echo " $g_restorepath exists and is not a saved Shorewall configuration"
|
|
fi
|
|
rm -f ${VARDIR}/save
|
|
;;
|
|
ipcalc)
|
|
[ -n "$debugging" ] && set -x
|
|
if [ $# -eq 2 ]; then
|
|
address=${2%/*}
|
|
vlsm=${2#*/}
|
|
elif [ $# -eq 3 ]; then
|
|
address=$2
|
|
vlsm=$(ip_vlsm $3)
|
|
else
|
|
usage 1
|
|
fi
|
|
|
|
valid_address $address || fatal_error "Invalid IP address: $address"
|
|
[ -z "$vlsm" ] && exit 2
|
|
[ "x$address" = "x$vlsm" ] && usage 2
|
|
[ $vlsm -gt 32 ] && echo "Invalid VLSM: /$vlsm" >&2 && exit 2
|
|
|
|
address=$address/$vlsm
|
|
|
|
echo " CIDR=$address"
|
|
temp=$(ip_netmask $address); echo " NETMASK=$(encodeaddr $temp)"
|
|
temp=$(ip_network $address); echo " NETWORK=$temp"
|
|
temp=$(broadcastaddress $address); echo " BROADCAST=$temp"
|
|
;;
|
|
|
|
iprange)
|
|
[ -n "$debugging" ] && set -x
|
|
case $2 in
|
|
*.*.*.*-*.*.*.*)
|
|
for address in ${2%-*} ${2#*-}; do
|
|
valid_address $address || fatal_error "Invalid IP address: $address"
|
|
done
|
|
|
|
ip_range $2
|
|
;;
|
|
*)
|
|
usage 1
|
|
;;
|
|
esac
|
|
;;
|
|
ipdecimal)
|
|
[ -n "$debugging" ] && set -x
|
|
[ $# -eq 2 ] || usage 1
|
|
case $2 in
|
|
*.*.*.*)
|
|
valid_address $2 || fatal_error "Invalid IP address: $2"
|
|
echo " $(decodeaddr $2)"
|
|
;;
|
|
*)
|
|
echo " $(encodeaddr $2)"
|
|
;;
|
|
esac
|
|
;;
|
|
restore)
|
|
shift
|
|
STARTUP_ENABLED=Yes
|
|
restore_command $@
|
|
;;
|
|
call)
|
|
[ -n "$debugging" ] && set -x
|
|
#
|
|
# Undocumented way to call functions in ${SHAREDIR}/functions directly
|
|
#
|
|
shift
|
|
$@
|
|
;;
|
|
help)
|
|
shift
|
|
usage
|
|
;;
|
|
*)
|
|
usage 1
|
|
;;
|
|
|
|
esac
|