forked from extern/shorewall_code
f12bb3e534
git-svn-id: https://shorewall.svn.sourceforge.net/svnroot/shorewall/trunk@5927 fbd18981-670d-0410-9b5c-8dc0c1a9a2bb
820 lines
17 KiB
Bash
Executable File
820 lines
17 KiB
Bash
Executable File
#!/bin/sh
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#
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# Shorewall Lite Packet Filtering Firewall Control Program - V3.4
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#
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# This program is under GPL [http://www.gnu.org/copyleft/gpl.htm]
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#
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# (c) 2006 - 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., 675 Mass Ave, Cambridge, MA 02139, 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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# Commands are:
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#
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# shorewall-lite dump Dumps all Shorewall-related information
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# for problem analysis
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# shorewall-lite start Starts the firewall
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# shorewall-lite restart Restarts the firewall
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# shorewall-lite stop Stops the firewall
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# shorewall-lite status Displays firewall status
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# shorewall-lite reset Resets iptables packet and
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# byte counts
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# shorewall-lite clear Open the floodgates by
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# removing all iptables rules
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# and setting the three permanent
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# chain policies to ACCEPT
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# shorewall-lite show <chain> [ <chain> ... ] Display the rules in each <chain> listed
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# shorewall-lite show log Print the last 20 log messages
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# shorewall-lite show connections Show the kernel's connection
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# tracking table
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# shorewall-lite show nat Display the rules in the nat table
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# shorewall-lite show {mangle|tos} Display the rules in the mangle table
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# shorewall-lite show tc Display traffic control info
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# shorewall-lite show classifiers Display classifiers
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# shorewall-lite show capabilities Display iptables/kernel capabilities
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# shorewall-lite version Display the installed version id
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# shorewall-lite logwatch [ refresh-interval ] Monitor the local log for Shorewall
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# messages.
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# shorewall-lite drop <address> ... Temporarily drop all packets from the
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# listed address(es)
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# shorewall-lite reject <address> ... Temporarily reject all packets from the
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# listed address(es)
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# shorewall-lite allow <address> ... Reenable address(es) previously
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# disabled with "drop" or "reject"
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# shorewall-lite save [ <file> ] Save the list of "rejected" and
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# "dropped" addresses so that it will
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# be automatically reinstated the
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# next time that Shorewall starts.
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# Save the current state so that 'shorewall
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# restore' can be used.
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#
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# shorewall-lite forget [ <file> ] Discard the data saved by 'shorewall save'
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#
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# shorewall-lite restore [ <file> ] Restore the state of the firewall from
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# previously saved information.
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#
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# shorewall-lite ipaddr { <address>/<cidr> | <address> <netmask> }
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#
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# Displays information about the network
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# defined by the argument[s]
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#
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# shorewall-lite iprange <address>-<address> Decomposes a range of IP addresses into
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# a list of network/host addresses.
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#
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# shorewall-lite ipdecimal { <address> | <integer> }
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#
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# Displays the decimal equivalent of an IP
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# address and vice versa.
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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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LOGREAD="logread"
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elif [ -f $LOGFILE ]; then
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LOGREAD="cat $LOGFILE"
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else
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echo "LOGFILE ($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 "$FW" ] || FW=fw
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[ -n "LOGFORMAT" ] && LOGFORMAT="${LOGFORMAT%%%*}"
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[ -n "$LOGFORMAT" ] || LOGFORMAT="Shorewall:"
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export LOGFORMAT
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if [ -n "$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 "$IPTABLES" ] ; then
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echo " ERROR: Can't find iptables executable" >&2
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exit 2
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fi
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fi
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export IPTABLES
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if [ -n "$SHOREWALL_SHELL" ]; then
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if [ ! -x "$SHOREWALL_SHELL" ]; then
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echo " ERROR: The program specified in SHOREWALL_SHELL does not exist or is not executable" >&2
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exit 2
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fi
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fi
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[ -n "$RESTOREFILE" ] || RESTOREFILE=restore
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validate_restorefile RESTOREFILE
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export RESTOREFILE
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[ -n "${VERBOSITY:=2}" ]
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VERBOSE=$(($VERBOSE_OFFSET + $VERBOSITY))
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export VERBOSE
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[ -n "${HOSTNAME:=$(hostname)}" ]
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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 $FIREWALL ]; then
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echo " ERROR: Shorewall Lite is not properly installed" >&2
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if [ -L $FIREWALL ]; then
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echo " $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 $FIREWALL does not exist" >&2
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fi
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exit 2
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fi
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}
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#
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# Start Command Executor
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#
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start_command() {
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local finished=0
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do_it() {
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local rc=0
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[ -n "$nolock" ] || mutex_on
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if [ -x ${LITEDIR}/firewall ]; then
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${LITEDIR}/firewall $debugging start
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rc=$?
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else
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error_message "${LITEDIR}/firewall is missing or is not executable"
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logger -p kern.err "ERROR:Shorewall Lite start failed"
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rc=2
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fi
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[ -n "$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 shorewall_is_started; then
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error_message "Shorewall is already running"
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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 $option in
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-)
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finished=1
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option=
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;;
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f*)
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FAST=Yes
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option=${option#f}
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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 $# in
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0)
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;;
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1)
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[ -n "$SHOREWALL_DIR" -o -n "$FAST" ] && usage 2
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if [ ! -d $1 ]; then
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if [ -e $1 ]; then
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echo "$1 is not a directory" >&2 && exit 2
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else
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echo "Directory $1 does not exist" >&2 && exit 2
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fi
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fi
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SHOREWALL_DIR=$
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export SHOREWALL_DIR
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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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export NOROUTES
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if [ -n "$FAST" ]; then
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if qt mywhich make; then
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#
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# RESTOREFILE is exported by get_config()
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#
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make -qf ${CONFDIR}/Makefile || FAST=
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fi
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if [ -n "$FAST" ]; then
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RESTOREPATH=${VARDIR}/$RESTOREFILE
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if [ -x $RESTOREPATH ]; then
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if [ -x ${RESTOREPATH}-ipsets ]; then
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echo Restoring Ipsets...
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#
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# We must purge iptables to be sure that there are no
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# references to ipsets
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#
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iptables -F
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iptables -X
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$SHOREWALL_SHELL ${RESTOREPATH}-ipsets
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fi
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echo Restoring Shorewall Lite...
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$SHOREWALL_SHELL $RESTOREPATH restore
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date > ${VARDIR}/restarted
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progress_message3 Shorewall Lite restored from $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=0 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 $option in
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-)
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finished=1
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option=
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;;
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n*)
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NOROUTES=Yes
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option=${option#n}
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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 $# in
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0)
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;;
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1)
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[ -n "$SHOREWALL_DIR" ] && usage 2
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if [ ! -d $1 ]; then
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if [ -e $1 ]; then
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echo "$1 is not a directory" >&2 && exit 2
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else
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echo "Directory $1 does not exist" >&2 && exit 2
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fi
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fi
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SHOREWALL_DIR=$1
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export SHOREWALL_DIR
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;;
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*)
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usage 1
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;;
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esac
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export NOROUTES
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[ -n "$nolock" ] || mutex_on
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if [ -x ${LITEDIR}/firewall ]; then
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$SHOREWALL_SHELL ${LITEDIR}/firewall $debugging restart
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rc=$?
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else
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error_message "${LITEDIR}/firewall is missing or is not executable"
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logger -p kern.err "ERROR:Shorewall Lite restart failed"
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rc=2
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fi
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[ -n "$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 ] [ -t ] <command>"
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echo "where <command> is one of:"
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echo " allow <address> ..."
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echo " clear"
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echo " drop <address> ..."
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echo " dump [ -x ]"
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echo " forget [ <file name> ]"
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echo " help"
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echo " hits"
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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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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"
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echo " restart [ -n ] [ <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 ] [ -m ] [ -f ] [<chain> [ <chain> ... ]|capabilities|classifiers|config|connections|ip|log|mangle|nat|routing|tc|zones]"
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echo " start [ -f ] [ -n ] [ <directory> ]"
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echo " stop"
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echo " status"
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echo " version"
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echo
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exit $1
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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=debug
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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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SHOREWALL_DIR=
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IPT_OPTIONS="-nv"
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FAST=
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VERBOSE_OFFSET=0
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NOROUTES=
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EXPORT=
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export TIMESTAMP=
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noroutes=
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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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c)
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[ $# -eq 1 ] && usage 1
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if [ ! -d $2 ]; then
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if [ -e $2 ]; then
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echo "$2 is not a directory" >&2 && exit 2
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else
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echo "Directory $2 does not exist" >&2 && exit 2
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fi
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fi
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SHOREWALL_DIR=$2
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option=
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shift
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;;
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e*)
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EXPORT=Yes
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option=${option#e}
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;;
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x*)
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IPT_OPTIONS="-xnv"
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option=${option#x}
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;;
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q*)
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VERBOSE_OFFSET=$(($VERBOSE_OFFSET - 1 ))
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option=${option#q}
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;;
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f*)
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FAST=Yes
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option=${option#f}
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;;
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v*)
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VERBOSE_OFFSET=$(($VERBOSE_OFFSET + 1 ))
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option=${option#v}
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;;
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n*)
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NOROUTES=Yes
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option=${option#n}
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;;
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t*)
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TIMESTAMP=Yes
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option=${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 [ $# -eq 0 ]; then
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usage 1
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fi
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[ -n "$SHOREWALL_DIR" ] && export SHOREWALL_DIR
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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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SHAREDIR=/usr/share/shorewall-lite
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VARDIR=/var/lib/shorewall-lite
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CONFDIR=/etc/shorewall-lite
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export PRODUCT="Shorewall Lite"
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LIBRARIES="$SHAREDIR/lib.base $SHAREDIR/lib.cli"
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VERSION_FILE=$SHAREDIR/version
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HELP=$SHAREDIR/help
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for library in $LIBRARIES; do
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if [ -f $library ]; then
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. $library
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else
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echo "Installation error: $library does not exist!" >&2
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exit 2
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fi
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done
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ensure_config_path
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config=$(find_file shorewall-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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[ -n "${LITEDIR}" -a -f ${LITEDIR}/firewall.conf ] && . ${LITEDIR}/firewall.conf
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ensure_config_path
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export CONFIG_PATH
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[ -n "$LITEDIR" ] || { echo " ERROR: LITEDIR not defined in ${SHAREDIR}/configpath" >&2; exit 2; }
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get_config
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FIREWALL=$LITEDIR/firewall
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if [ -f $VERSION_FILE ]; then
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version=$(cat $VERSION_FILE)
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else
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echo " ERROR: Shorewall Lite 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="Shorewall Lite $version Status at $HOSTNAME -"
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case $(echo -e) in
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-e*)
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RING_BELL="echo \a"
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;;
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*)
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RING_BELL="echo -e \a"
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;;
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esac
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case $(echo -n "Testing") in
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-n*)
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ECHO_N=
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;;
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*)
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ECHO_N=-n
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;;
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esac
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COMMAND=$1
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|
case "$COMMAND" in
|
|
start)
|
|
shift
|
|
start_command $@
|
|
;;
|
|
stop|reset|clear)
|
|
[ $# -ne 1 ] && usage 1
|
|
verify_firewall_script
|
|
export NOROUTES
|
|
exec $SHOREWALL_SHELL $FIREWALL $debugging $nolock $COMMAND
|
|
;;
|
|
restart)
|
|
shift
|
|
restart_command $@
|
|
;;
|
|
show|list)
|
|
shift
|
|
show_command $@
|
|
;;
|
|
status)
|
|
[ $# -eq 1 ] || usage 1
|
|
echo "Shorewall Lite $version Status at $HOSTNAME - $(date)"
|
|
echo
|
|
if shorewall_is_started ; then
|
|
echo "Shorewall Lite is running"
|
|
status=0
|
|
else
|
|
echo "Shorewall Lite is stopped"
|
|
status=4
|
|
fi
|
|
|
|
if [ -f ${VARDIR}/state ]; then
|
|
state="$(cat ${VARDIR}/state)"
|
|
case $state in
|
|
Stopped*|Clear*)
|
|
status=3
|
|
;;
|
|
esac
|
|
else
|
|
state=Unknown
|
|
fi
|
|
echo "State:$state"
|
|
echo
|
|
exit $status
|
|
;;
|
|
dump)
|
|
shift
|
|
dump_command $@
|
|
;;
|
|
hits)
|
|
[ -n "$debugging" ] && set -x
|
|
[ $# -eq 1 ] || usage 1
|
|
hits_command
|
|
;;
|
|
version)
|
|
echo $version Lite
|
|
;;
|
|
logwatch)
|
|
logwatch_command $@
|
|
;;
|
|
drop)
|
|
[ -n "$debugging" ] && set -x
|
|
[ $# -eq 1 ] && usage 1
|
|
if shorewall_is_started ; then
|
|
mutex_on
|
|
block DROP Dropped $*
|
|
mutex_off
|
|
else
|
|
error_message "ERROR: Shorewall Lite is not started"
|
|
exit 2
|
|
fi
|
|
;;
|
|
logdrop)
|
|
[ -n "$debugging" ] && set -x
|
|
[ $# -eq 1 ] && usage 1
|
|
if shorewall_is_started ; then
|
|
mutex_on
|
|
block logdrop Dropped $*
|
|
mutex_off
|
|
else
|
|
error_message "ERROR: Shorewall Lite is not started"
|
|
exit 2
|
|
fi
|
|
;;
|
|
reject|logreject)
|
|
[ -n "$debugging" ] && set -x
|
|
[ $# -eq 1 ] && usage 1
|
|
if shorewall_is_started ; then
|
|
mutex_on
|
|
block $COMMAND Rejected $*
|
|
mutex_off
|
|
else
|
|
error_message "ERROR: Shorewall Lite is not started"
|
|
exit 2
|
|
fi
|
|
;;
|
|
allow)
|
|
allow_command $@
|
|
;;
|
|
save)
|
|
[ -n "$debugging" ] && set -x
|
|
|
|
case $# in
|
|
1)
|
|
;;
|
|
2)
|
|
RESTOREFILE="$2"
|
|
validate_restorefile '<restore file>'
|
|
;;
|
|
*)
|
|
usage 1
|
|
;;
|
|
esac
|
|
|
|
RESTOREPATH=${VARDIR}/$RESTOREFILE
|
|
|
|
[ "$nolock" ] || mutex_on
|
|
|
|
save_config
|
|
|
|
[ "$nolock" ] || mutex_off
|
|
;;
|
|
forget)
|
|
case $# in
|
|
1)
|
|
;;
|
|
2)
|
|
RESTOREFILE="$2"
|
|
validate_restorefile '<restore file>'
|
|
;;
|
|
*)
|
|
usage 1
|
|
;;
|
|
esac
|
|
|
|
|
|
RESTOREPATH=${VARDIR}/$RESTOREFILE
|
|
|
|
if [ -x $RESTOREPATH ]; then
|
|
|
|
if [ -x ${RESTOREPATH}-ipsets ]; then
|
|
rm -f ${RESTOREPATH}-ipsets
|
|
echo " ${RESTOREPATH}-ipsets removed"
|
|
fi
|
|
|
|
rm -f $RESTOREPATH
|
|
rm -f ${RESTOREPATH}-iptables
|
|
echo " $RESTOREPATH removed"
|
|
elif [ -f $RESTOREPATH ]; then
|
|
echo " $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
|
|
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
|