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shorewall_code/Shorewall/shorewall
Tom Eastep b9fb023208 Correct typo in comment
2009-05-11 07:04:08 -07:00

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#!/bin/sh
#
# Shorewall Packet Filtering Firewall Control Program - V4.4
#
# This program is under GPL [http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt]
#
# (c) 1999,2000,2001,2002,2003,2004,2005,2006,2007,2008,2009 - Tom Eastep (teastep@shorewall.net)
#
# This file should be placed in /sbin/shorewall.
#
# Shorewall documentation is available at http://www.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.
#
# If an error occurs while starting or restarting the firewall, the
# firewall is automatically stopped.
#
# The firewall uses configuration files in /etc/shorewall/ - skeleton
# files are included with the firewall.
#
# Commands are:
#
# shorewall add <iface>[:<host>] zone Adds a host or subnet to a zone
# shorewall delete <iface>[:<host>] zone Deletes a host or subnet from a zone
# shorewall dump Dumps all Shorewall-related information
# for problem analysis
# shorewall start Starts the firewall
# shorewall restart Restarts the firewall
# shorewall stop Stops the firewall
# shorewall status Displays firewall status
# shorewall reset Resets iptables packet and
# byte counts
# shorewall clear Open the floodgates by
# removing all iptables rules
# and setting the three permanent
# chain policies to ACCEPT
# shorewall refresh Rebuild the common chain to
# compensate for a change of
# broadcast address on any "detect"
# interface.
# shorewall [re]load [ <directory> ] <system>
# Compile a script and install it on a
# remote Shorewall Lite system.
# shorewall show <chain> [ <chain> ... ] Display the rules in each <chain> listed
# shorewall show actions Displays the available actions
# shorewall show log Print the last 20 log messages
# shorewall show connections Show the kernel's connection
# tracking table
# shorewall show nat Display the rules in the nat table
# shorewall show {mangle|tos} Display the rules in the mangle table
# shorewall show tc Display traffic control info
# shorewall show classifiers Display classifiers
# shorewall show capabilities Display iptables/kernel capabilities
# shorewall show vardir Display the VARDIR setting.
# shorewall version Display the installed version id
# shorewall check [ -e ] [ <directory> ] Dry-run compilation.
# shorewall try <directory> [ <timeout> ] Try a new configuration and if
# it doesn't work, revert to the
# standard one. If a timeout is supplied
# the command reverts back to the
# standard configuration after that many
# seconds have elapsed after successfully
# starting the new configuration.
# shorewall logwatch [ refresh-interval ] Monitor the local log for Shorewall
# messages.
# shorewall drop <address> ... Temporarily drop all packets from the
# listed address(es)
# shorewall reject <address> ... Temporarily reject all packets from the
# listed address(es)
# shorewall allow <address> ... Reenable address(es) previously
# disabled with "drop" or "reject"
# shorewall save [ <file> ] Save the list of "rejected" and
# "dropped" addresses so that it will
# be automatically reinstated the
# next time that Shorewall starts.
# Save the current state so that 'shorewall
# restore' can be used.
#
# shorewall forget [ <file> ] Discard the data saved by 'shorewall save'
#
# shorewall restore [ <file> ] Restore the state of the firewall from
# previously saved information.
#
# shorewall ipaddr { <address>/<cidr> | <address> <netmask> }
#
# Displays information about the network
# defined by the argument[s]
#
# shorewall iprange <address>-<address> Decomposes a range of IP addresses into
# a list of network/host addresses.
#
# shorewall ipdecimal { <address> | <integer> }
#
# Displays the decimal equivalent of an IP
# address and vice versa.
#
# shorewall safe-start [ <directory> ] Starts the firewall and promtp for a c
# confirmation to accept or reject the new
# configuration
#
# shorewall safe-restart [ <directory> ] Restarts the firewall and prompt for a
# confirmation to accept or reject the new
# configuration
#
# shorewall compile [ -e ] [ <directory> ] <filename>
# Compile a firewall program file.
#
# Set the configuration variables from shorewall.conf
#
# $1 = Yes: read the params file
# $2 = Yes: check for STARTUP_ENABLED
# $3 = Yes: Check for LOGFILE
#
#
get_config() {
local prog
ensure_config_path
if [ "$1" = Yes ]; then
params=$(find_file params)
if [ -f $params ]; then
. $params
fi
fi
config=$(find_file shorewall.conf)
if [ -f $config ]; then
if [ -r $config ]; then
. $config
else
echo "Cannot read $config! (Hint: Are you root?)" >&2
exit 1
fi
else
echo "$config does not exist!" >&2
exit 2
fi
ensure_config_path
if [ -z "$EXPORT" -a "$(id -u)" = 0 ]; then
#
# This block is avoided for compile for export and when the user isn't root
#
export CONFIG_PATH
if [ "$3" = Yes ]; then
[ -z "$LOGFILE" ] && LOGFILE=/var/log/messages
if [ -n "$(syslog_circular_buffer)" ]; then
LOGREAD="logread | tac"
elif [ -f $LOGFILE ]; then
LOGREAD="tac $LOGFILE"
else
echo "LOGFILE ($LOGFILE) does not exist!" >&2
exit 2
fi
fi
if [ -n "$IPTABLES" ]; then
if [ ! -x "$IPTABLES" ]; then
echo " ERROR: The program specified in IPTABLES does not exist or is not executable" >&2
exit 2
fi
else
IPTABLES=$(mywhich iptables 2> /dev/null)
if [ -z "$IPTABLES" ] ; then
echo " ERROR: Can't find iptables executable" >&2
exit 2
fi
fi
export IPTABLES
if [ -n "$IP" ]; then
case "$IP" in
*/*)
if [ ! -x "$IP" ] ; then
echo " ERROR: The program specified in IP ($IP) does not exist or is not executable" >&2
exit 2
fi
;;
*)
prog="$(mywhich $IP 2> /dev/null)"
if [ -z "$prog" ] ; then
echo " ERROR: Can't find $IP executable" >&2
exit 2
fi
IP=$prog
;;
esac
else
IP='ip'
fi
export IP
if [ -n "$IPSET" ]; then
case "$IPSET" in
*/*)
if [ ! -x "$IPSET" ] ; then
echo " ERROR: The program specified in IPSET ($IPSET) does not exist or is not executable" >&2
exit 2
fi
;;
*)
prog="$(mywhich $IPSET 2> /dev/null)"
if [ -z "$prog" ] ; then
echo " ERROR: Can't find $IPSET executable" >&2
exit 2
fi
IPSET=$prog
;;
esac
else
IPSET='ipset'
fi
export IPSET
if [ -n "$TC" ]; then
case "$TC" in
*/*)
if [ ! -x "$TC" ] ; then
echo " ERROR: The program specified in TC ($TC) does not exist or is not executable" >&2
exit 2
fi
;;
*)
prog="$(mywhich $TC 2> /dev/null)"
if [ -z "$prog" ] ; then
echo " ERROR: Can't find $TC executable" >&2
exit 2
fi
TC=$prog
;;
esac
else
TC='tc'
fi
export TC
#
# Compile by non-root needs no restore file
#
[ -n "$RESTOREFILE" ] || RESTOREFILE=restore
validate_restorefile RESTOREFILE
export RESTOREFILE
if [ "$2" = Yes ]; then
case $STARTUP_ENABLED in
No|no|NO)
echo " ERROR: Shorewall startup is disabled. To enable startup, set STARTUP_ENABLED=Yes in ${CONFDIR}/shorewall.conf" >&2
exit 2
;;
Yes|yes|YES)
;;
*)
if [ -n "$STARTUP_ENABLED" ]; then
echo " ERROR: Invalid Value for STARTUP_ENABLE: $STARTUP_ENABLED" >&2
exit 2
fi
;;
esac
fi
case ${SHOREWALL_COMPILER:=perl} in
perl|Perl)
;;
shell|Shell)
echo " ERROR: SHOREWALL_COMPILER=shell is no longer supported" >&2
exit 2
;;
*)
echo " ERROR: Invalid value ($SHOREWALL_COMPILER) for SHOREWALL_COMPILER" >&2
exit 2
;;
esac
case ${TC_ENABLED:=Internal} in
No|NO|no)
TC_ENABLED=
;;
esac
[ -n "LOGFORMAT" ] && LOGFORMAT="${LOGFORMAT%%%*}"
[ -n "$LOGFORMAT" ] || LOGFORMAT="Shorewall:"
export LOGFORMAT
if [ -n "$STARTUP_LOG" ]; then
if [ -n "$LOG_VERBOSITY" ]; then
case $LOG_VERBOSITY in
-1)
;;
0|1|2)
;;
*)
echo " ERROR: Invalid LOG_VERBOSITY ($LOG_VERBOSITY)" >&2
exit 2;
;;
esac
else
LOG_VERBOSITY=2;
fi
else
LOG_VERBOSITY=-1;
fi
else
STARTUP_LOG=
LOG_VERBOSITY=-1
fi
if [ -n "$SHOREWALL_SHELL" ]; then
if [ ! -x "$SHOREWALL_SHELL" ]; then
echo " WARNING: The program specified in SHOREWALL_SHELL does not exist or is not executable; falling back to /bin/sh" >&2
SHOREWALL_SHELL=/bin/sh
fi
fi
case $VERBOSITY in
-1|0|1|2)
;;
*)
if [ -n "$VERBOSITY" ]; then
echo " ERROR: Invalid VERBOSITY setting ($VERBOSITY)" >&2
exit 2
else
VERBOSITY=2
fi
;;
esac
[ -n "$USE_VERBOSITY" ] && VERBOSE=$USE_VERBOSITY || VERBOSE=$(($VERBOSE_OFFSET + $VERBOSITY))
if [ $VERBOSE -lt -1 ]; then
VERBOSE=-1
elif [ $VERBOSE -gt 2 ]; then
VERBOSE=2
fi
export VERBOSE
[ -n "${HOSTNAME:=$(hostname)}" ]
[ -n "$RSH_COMMAND" ] || RSH_COMMAND='ssh ${root}@${system} ${command}'
[ -n "$RCP_COMMAND" ] || RCP_COMMAND='scp ${files} ${root}@${system}:${destination}'
case $MANGLE_ENABLED in
Yes|yes)
;;
No|no)
MANGLE_ENABLED=
;;
*)
if [ -n "$MANGLE_ENABLED" ]; then
echo " ERROR: Invalid MANGLE_ENABLED setting ($MANGLE_ENABLED)" >&2
exit 2
fi
;;
esac
case $FAST_STOP in
Yes|yes)
;;
No|no)
FAST_STOP=
;;
*)
if [ -n "$FAST_STOP" ]; then
echo " ERROR: Invalid FAST_STOP setting ($FAST_STOP)" >&2
exit 2
fi
;;
esac
case $AUTOMAKE in
Yes|yes)
;;
No|no)
AUTOMAKE=
;;
*)
if [ -n "$AUTOMAKE" ]; then
echo " ERROR: Invalid AUTOMAKE setting ($AUTOMAKE)" >&2
exit 1
fi
;;
esac
}
#
# Run the compiler
#
compiler() {
startup_error() {
echo " ERROR: $@" >&2
exit 1
}
if [ $(id -u) -ne 0 ]; then
if [ -z "$SHOREWALL_DIR" -o "$SHOREWALL_DIR" = /etc/shorewall ]; then
startup_error "Ordinary users may not compile the /etc/shorewall configuration"
fi
fi
#
# We've now set SHOREWALL_DIR so recalculate CONFIG_PATH
#
ensure_config_path
case $COMMAND in
*start|try|refresh)
;;
*)
STARTUP_LOG=
LOG_VERBOSITY=-1
;;
esac
debugflags="-w"
[ -n "$DEBUG" ] && debugflags='-wd'
[ -n "$PROFILE" ] && debugflags='-wd:DProf'
# Perl compiler only takes the output file as a argument
[ "$1" = debug -o "$1" = trace ] && shift;
[ "$1" = nolock ] && shift;
shift
options="--verbose=$VERBOSE"
[ -n "$STARTUP_LOG" ] && options="$options --log=$STARTUP_LOG"
[ -n "$LOG_VERBOSITY" ] && options="$options --log_verbosity=$LOG_VERBOSITY";
[ -n "$EXPORT" ] && options="$options --export"
[ -n "$SHOREWALL_DIR" ] && options="$options --directory=$SHOREWALL_DIR"
[ -n "$TIMESTAMP" ] && options="$options --timestamp"
[ -n "$TEST" ] && options="$options --test"
[ "$debugging" = trace ] && options="$options --debug"
[ -n "$REFRESHCHAINS" ] && options="$options --refresh=$REFRESHCHAINS"
#
# Run the appropriate params file
#
set -a;
run_user_exit params
set +a
perl $debugflags /usr/share/shorewall/compiler.pl $options $@
}
#
# Start Command Executor
#
start_command() {
local finished
finished=0
local restorefile
do_it() {
local rc
rc=0
if [ -n "$AUTOMAKE" ]; then
[ -n "$nolock" ] || mutex_on
${VARDIR}/firewall $debugging start
rc=$?
[ -n "$nolock" ] || mutex_off
else
progress_message3 "Compiling..."
if compiler $debugging $nolock compile ${VARDIR}/.start; then
[ -n "$nolock" ] || mutex_on
${VARDIR}/.start $debugging start
rc=$?
[ -n "$nolock" ] || mutex_off
else
rc=$?
logger -p kern.err "ERROR:Shorewall start failed"
fi
fi
exit $rc
}
if shorewall_is_started; then
error_message "Shorewall is already running"
exit 0
fi
[ -n "$STARTUP_ENABLED" ] || fatal_error "Startup is disabled"
while [ $finished -eq 0 -a $# -gt 0 ]; do
option=$1
case $option in
-*)
option=${option#-}
while [ -n "$option" ]; do
case $option in
-)
finished=1
option=
;;
d*)
DEBUG=Yes
option=${option#d}
;;
f*)
FAST=Yes
option=${option#f}
;;
p*)
[ -n "$(which conntrack)" ] || fatal_error "The '-p' option requires the conntrack utility which does not appear to be installed on this system"
PURGE=Yes
option=${option%p}
;;
*)
usage 1
;;
esac
done
shift
;;
*)
finished=1
;;
esac
done
case $# in
0)
;;
1)
[ -n "$SHOREWALL_DIR" -o -n "$FAST" ] && usage 2
if [ ! -d $1 ]; then
if [ -e $1 ]; then
echo "$1 is not a directory" >&2 && exit 2
else
echo "Directory $1 does not exist" >&2 && exit 2
fi
fi
SHOREWALL_DIR=$(resolve_file $1)
export SHOREWALL_DIR
AUTOMAKE=
;;
*)
usage 1
;;
esac
export NOROUTES
export PURGE
if [ -n "${FAST}${AUTOMAKE}" ]; then
if qt mywhich make; then
#
# RESTOREFILE is exported by get_config()
#
restorefile=$RESTOREFILE
if [ -z "$FAST" ]; then
#
# Automake -- use the last compiled script
#
RESTOREFILE=firewall
fi
if ! make -qf ${CONFDIR}/Makefile; then
FAST=
AUTOMAKE=
fi
RESTOREFILE=$restorefile
else
FAST=
AUTOMAKE=
fi
if [ -n "$FAST" ]; then
RESTOREPATH=${VARDIR}/$RESTOREFILE
if [ -x $RESTOREPATH ]; then
echo Restoring Shorewall...
$SHOREWALL_SHELL $RESTOREPATH restore
date > ${VARDIR}/restarted
progress_message3 Shorewall restored from $RESTOREPATH
else
do_it
fi
else
do_it
fi
else
do_it
fi
}
#
# Compile Command Executor
#
compile_command() {
local finished
finished=0
while [ $finished -eq 0 ]; do
[ $# -eq 0 ] && break
option=$1
case $option in
-*)
shift
option=${option#-}
[ -z "$option" ] && usage 1
while [ -n "$option" ]; do
case $option in
e*)
EXPORT=Yes
option=${option#e}
;;
p*)
PROFILE=Yes
option=${option#p}
;;
t*)
TEST=Yes
option=${option#t}
;;
d*)
DEBUG=Yes;
option=${option#d}
;;
-)
finished=1
option=
;;
*)
usage 1
;;
esac
done
;;
*)
finished=1
;;
esac
done
file=
case $# in
0)
file=${VARDIR}/firewall
;;
1)
file=$1
[ -d $file ] && echo " ERROR: $file is a directory" >&2 && exit 2;
;;
2)
[ -n "$SHOREWALL_DIR" ] && usage 2
if [ ! -d $1 ]; then
if [ -e $1 ]; then
echo "$1 is not a directory" >&2 && exit 2
else
echo "Directory $1 does not exist" >&2 && exit 2
fi
fi
SHOREWALL_DIR=$(resolve_file $1)
export SHOREWALL_DIR
file=$2
;;
*)
usage 1
;;
esac
export EXPORT
progress_message3 "Compiling..."
compiler $debugging compile $file
}
#
# Check Command Executor
#
check_command() {
local finished
finished=0
while [ $finished -eq 0 -a $# -gt 0 ]; do
option=$1
case $option in
-*)
option=${option#-}
while [ -n "$option" ]; do
case $option in
-)
finished=1
option=
;;
e*)
EXPORT=Yes
option=${option#e}
;;
p*)
PROFILE=Yes
option=${option#p}
;;
d*)
DEBUG=Yes;
option=${option#d}
;;
*)
usage 1
;;
esac
done
shift
;;
*)
finished=1
;;
esac
done
case $# in
0)
;;
1)
[ -n "$SHOREWALL_DIR" ] && usage 2
if [ ! -d $1 ]; then
if [ -e $1 ]; then
echo "$1 is not a directory" >&2 && exit 2
else
echo "Directory $1 does not exist" >&2 && exit 2
fi
fi
SHOREWALL_DIR=$(resolve_file $1)
export SHOREWALL_DIR
;;
*)
usage 1
;;
esac
export EXPORT
progress_message3 "Checking..."
compiler $debugging $nolock check
}
#
# Restart Command Executor
#
restart_command() {
local finished
finished=0
local rc
rc=0
local restorefile
while [ $finished -eq 0 -a $# -gt 0 ]; do
option=$1
case $option in
-*)
option=${option#-}
while [ -n "$option" ]; do
case $option in
-)
finished=1
option=
;;
d*)
DEBUG=Yes
option=${option#d}
;;
f*)
FAST=Yes
option=${option#f}
;;
n*)
NOROUTES=Yes
option=${option#n}
;;
p*)
[ -n "$(which conntrack)" ] || fatal_error "The '-p' option requires the conntrack utility which does not appear to be installed on this system"
PURGE=Yes
option=${option%p}
;;
*)
usage 1
;;
esac
done
shift
;;
*)
finished=1
;;
esac
done
case $# in
0)
;;
1)
[ -n "$SHOREWALL_DIR" ] && usage 2
if [ ! -d $1 ]; then
if [ -e $1 ]; then
echo "$1 is not a directory" >&2 && exit 2
else
echo "Directory $1 does not exist" >&2 && exit 2
fi
fi
SHOREWALL_DIR=$(resolve_file $1)
[ -n "$FAST" ] && fatal_error "Directory may not be specified with the -f option"
export SHOREWALL_DIR
AUTOMAKE=
;;
*)
usage 1
;;
esac
[ -n "$STARTUP_ENABLED" ] || fatal_error "Startup is disabled"
export NOROUTES
export PURGE
if [ -z "$FAST" -a -n "$AUTOMAKE" ]; then
if qt mywhich make; then
#
# RESTOREFILE is exported by get_config()
#
restorefile=$RESTOREFILE
RESTOREFILE=firewall
make -qf ${CONFDIR}/Makefile && FAST=Yes
RESTOREFILE=$restorefile
fi
fi
if [ -z "$FAST" ]; then
progress_message3 "Compiling..."
if compiler $debugging $nolock compile ${VARDIR}/.restart; then
[ -n "$nolock" ] || mutex_on
$SHOREWALL_SHELL ${VARDIR}/.restart $debugging restart
rc=$?
[ -n "$nolock" ] || mutex_off
else
rc=$?
logger -p kern.err "ERROR:Shorewall restart failed"
fi
else
[ -x ${VARDIR}/firewall ] || fatal_error "No ${VARDIR}/firewall file found"
[ -n "$nolock" ] || mutex_on
$SHOREWALL_SHELL ${VARDIR}/firewall $debugging restart
rc=$?
[ -n "$nolock" ] || mutex_off
fi
return $rc
}
#
# Refresh Command Executor
#
refresh_command() {
local finished
finished=0
while [ $finished -eq 0 -a $# -gt 0 ]; do
option=$1
case $option in
-*)
option=${option#-}
while [ -n "$option" ]; do
case $option in
-)
finished=1
option=
;;
*)
usage 1
;;
esac
done
shift
;;
*)
finished=1
;;
esac
done
if [ $# -gt 0 ]; then
REFRESHCHAINS=$1
shift
while [ $# -gt 0 ]; do
REFRESHCHAINS="$REFRESHCHAINS,$1"
shift
done
fi
shorewall_is_started || fatal_error "Shorewall is not running"
[ -n "$STARTUP_ENABLED" ] || fatal_error "Startup is disabled"
export NOROUTES
progress_message3 "Compiling..."
if compiler $debugging $nolock compile ${VARDIR}/.refresh; then
[ -n "$nolock" ] || mutex_on
$SHOREWALL_SHELL ${VARDIR}/.refresh $debugging refresh
rc=$?
[ -n "$nolock" ] || mutex_off
else
rc=$?
fi
return $rc
}
#
# Safe-start/safe-restart Command Executor
#
safe_commands() {
local finished
finished=0
# test is the shell supports timed read
read -t 0 junk 2> /dev/null
if [ $? -eq 2 -a ! -x /bin/bash ];then
echo "Your shell does not support a feature required to execute this command".
exit 2
fi
while [ $finished -eq 0 -a $# -gt 0 ]; do
option=$1
case $option in
-*)
option=${option#-}
while [ -n "$option" ]; do
case $option in
-)
finished=1
option=
;;
n*)
NOROUTES=Yes
option=${option#n}
;;
*)
usage 1
;;
esac
done
shift
;;
*)
finished=1
;;
esac
done
case $# in
0)
;;
1)
[ -n "$SHOREWALL_DIR" ] && usage 2
if [ ! -d $1 ]; then
if [ -e $1 ]; then
echo "$1 is not a directory" >&2 && exit 2
else
echo "Directory $1 does not exist" >&2 && exit 2
fi
fi
SHOREWALL_DIR=$(resolve_file $1)
export SHOREWALL_DIR
;;
*)
usage 1
;;
esac
[ -n "$STARTUP_ENABLED" ] || fatal_error "Startup is disabled"
if shorewall_is_started; then
running=Yes
else
running=
fi
if [ "$COMMAND" = "safe-start" -a -n "$running" ]; then
# the command is safe-start but the firewall is already running
error_message "Shorewall is already started"
exit 0
fi
if [ "$COMMAND" = "safe-start" -o -z "$running" ]; then
# the command is safe-start or shorewall is not started yet
command="start"
else
# the command is safe-restart and the firewall is already running
command="restart"
fi
progress_message3 "Compiling..."
if ! compiler $debugging nolock compile ${VARDIR}/.$command; then
status=$?
exit $status
fi
case $command in
start)
export RESTOREFILE=NONE
progress_message3 "Starting..."
;;
restart)
export RESTOREFILE=.safe
RESTOREPATH=${VARDIR}/.safe
save_config
progress_message3 "Restarting..."
;;
esac
[ -n "$nolock" ] || mutex_on
if ${VARDIR}/.$command $command; then
echo -n "Do you want to accept the new firewall configuration? [y/n] "
if read_yesno_with_timeout; then
echo "New configuration has been accepted"
else
if [ "$command" = "restart" ]; then
${VARDIR}/.safe restore
else
${VARDIR}/.$command clear
fi
[ -n "$nolock" ] || mutex_off
echo "New configuration has been rejected and the old one restored"
exit 2
fi
fi
[ -n "$nolock" ] || mutex_off
}
#
# 'try' Command Executor
#
try_command() {
local finished
finished=0
local timeout
timeout=
handle_directory() {
[ -n "$SHOREWALL_DIR" ] && usage 2
if [ ! -d $1 ]; then
if [ -e $1 ]; then
echo "$1 is not a directory" >&2 && exit 2
else
echo "Directory $1 does not exist" >&2 && exit 2
fi
fi
SHOREWALL_DIR=$(resolve_file $1)
export SHOREWALL_DIR
}
while [ $finished -eq 0 -a $# -gt 0 ]; do
option=$1
case $option in
-*)
option=${option#-}
while [ -n "$option" ]; do
case $option in
-)
finished=1
option=
;;
n*)
NOROUTES=Yes
option=${option#n}
;;
*)
usage 1
;;
esac
done
shift
;;
*)
finished=1
;;
esac
done
case $# in
0)
usage 1
;;
1)
handle_directory $1
;;
2)
handle_directory $1
timeout=$2
case $timeout in
*[!0-9]*)
echo " ERROR: Invalid timeout ($timeout)" >&2;
exit 1
;;
esac
;;
*)
usage 1
;;
esac
[ -n "$STARTUP_ENABLED" ] || fatal_error "Startup is disabled"
if shorewall_is_started; then
running=Yes
else
running=
fi
if [ -z "$running" ]; then
# shorewall is not started yet
command="start"
else
# the firewall is already running
command="restart"
fi
progress_message3 "Compiling..."
if ! compiler $debugging $nolock compile ${VARDIR}/.$command; then
status=$?
exit $status
fi
case $command in
start)
export RESTOREFILE=NONE
progress_message3 "Starting..."
;;
restart)
export RESTOREFILE=.try
RESTOREPATH=${VARDIR}/.try
save_config
progress_message3 "Restarting..."
;;
esac
[ -n "$nolock" ] || mutex_on
if ${VARDIR}/.$command $command && [ -n "$timeout" ]; then
sleep $timeout
if [ "$command" = "restart" ]; then
${VARDIR}/.try restore
else
${VARDIR}/.$command clear
fi
fi
[ -n "$nolock" ] || mutex_off
return 0
}
rsh_command() {
command="$*"
eval $RSH_COMMAND
}
rcp_command() {
files="$1"
destination=$2
eval $RCP_COMMAND
}
#
# [Re]load command executor
#
reload_command() # $* = original arguments less the command.
{
local verbose
verbose=$(make_verbose)
local file
file=
local capabilities
capabilities=
local finished
finished=0
local saveit
saveit=
local result
local directory
local system
local getcaps
getcaps=
local root
root=root
LITEDIR=/var/lib/shorewall-lite
while [ $finished -eq 0 -a $# -gt 0 ]; do
option=$1
case $option in
-*)
option=${option#-}
while [ -n "$option" ]; do
case $option in
-)
finished=1
option=
;;
s*)
saveit=Yes
option=${option#s}
;;
c*)
getcaps=Yes
option=${option#c}
;;
r)
[ $# -gt 1 ] || fatal_error "Missing Root User name"
root=$2
option=
shift
;;
*)
usage 1
;;
esac
done
shift
;;
*)
finished=1
;;
esac
done
case $# in
1)
directory="."
system=$1
;;
2)
directory=$1
system=$2
;;
*)
usage 1
;;
esac
litedir=$(rsh_command /sbin/shorewall-lite show config 2> /dev/null | grep ^LITEDIR | sed 's/LITEDIR is //')
[ -n "$litedir" ] && LITEDIR=$litedir
if [ -z "$getcaps" ]; then
SHOREWALL_DIR=$(resolve_file $directory)
ensure_config_path
capabilities=$(find_file capabilities)
[ -f $capabilities ] || getcaps=Yes
fi
if [ -n "$getcaps" ]; then
if [ -f $directory/shorewall.conf ]; then
. $directory/shorewall.conf
ensure_config_path
fi
progress_message "Getting Capabilities on system $system..."
if ! rsh_command "MODULESDIR=$MODULESDIR MODULE_SUFFIX=\"$MODULE_SUFFIX\" IPTABLES=$IPTABLES /usr/share/shorewall-lite/shorecap" > $directory/capabilities; then
fatal_error "ERROR: Capturing capabilities on system $system failed"
fi
fi
file=$(resolve_file $directory/firewall)
[ -n "$TIMESTAMP" ] && timestamp='-t' || timestamp=
if shorewall $debugging $verbose $timestamp compile -e $directory $directory/firewall && \
progress_message3 "Copying $file and ${file}.conf to ${system}:${LITEDIR}..." && \
rcp_command "$directory/firewall $directory/firewall.conf" ${LITEDIR}
then
save=$(find_file save);
[ -f $save ] && progress_message3 "Copying $save to ${system}:/etc/shorewall-lite/" && rcp_command $save /etc/shorewall-lite/
progress_message3 "Copy complete"
if [ $COMMAND = reload ]; then
rsh_command "/sbin/shorewall-lite $debugging $verbose $timestamp restart" && \
progress_message3 "System $system reloaded" || saveit=
else
rsh_command "/sbin/shorewall-lite $debugging $verbose $timestamp start" && \
progress_message3 "System $system loaded" || saveit=
fi
if [ -n "$saveit" ]; then
rsh_command "/sbin/shorewall-lite $debugging $verbose $timestamp save" && \
progress_message3 "Configuration on system $system saved"
fi
fi
}
#
# Export command executor
#
export_command() # $* = original arguments less the command.
{
local verbose
verbose=$(make_verbose)
local file
file=
local finished
finished=0
local directory
local target
while [ $finished -eq 0 -a $# -gt 0 ]; do
option=$1
case $option in
-*)
option=${option#-}
while [ -n "$option" ]; do
case $option in
-)
finished=1
option=
;;
*)
fatal_error "Unrecognized option \"$option\""
;;
esac
done
shift
;;
*)
finished=1
;;
esac
done
case $# in
1)
directory="."
target=$1
;;
2)
directory=$1
target=$2
;;
*)
fatal_error "ERROR: Invalid command syntax (\"man shorewall\" for help)"
;;
esac
case $target in
*:*)
;;
*)
target=$target:
;;
esac
file=$(resolve_file $directory/firewall)
if shorewall $debugging $verbose compile -e $directory $directory/firewall && \
echo "Copying $file and ${file}.conf to ${target#*@}..." && \
scp $directory/firewall $directory/firewall.conf $target
then
save=$(find_file save);
[ -f $save ] && progress_message3 "Copying $save to ${target#*}..." && rcp_command $save $target
progress_message3 "Copy complete"
fi
}
#
# Give Usage Information
#
usage() # $1 = exit status
{
echo "Usage: $(basename $0) [debug|trace] [nolock] [ -q ] [ -v[-1|{0-2}] ] [ -t ] <command>"
echo "where <command> is one of:"
echo " add <interface>[:<host-list>] ... <zone>"
echo " allow <address> ..."
echo " check [ -e ] [ <directory> ]"
echo " clear [ -f ]"
echo " compile [ -e ] [ -d ] [ <directory name> ] [ <path name> ]"
echo " delete <interface>[:<host-list>] ... <zone>"
echo " drop <address> ..."
echo " dump [ -x ]"
echo " export [ <directory1> ] [<user>@]<system>[:<directory2>]"
echo " forget [ <file name> ]"
echo " help"
echo " hits [ -t ]"
echo " ipcalc { <address>/<vlsm> | <address> <netmask> }"
echo " ipdecimal { <address> | <integer> }"
echo " iprange <address>-<address>"
echo " load [ -s ] [ -c ] [ -r <root user> ] [ <directory> ] <system>"
echo " logdrop <address> ..."
echo " logreject <address> ..."
echo " logwatch [<refresh interval>]"
echo " refresh [ <chain>... ]"
echo " reject <address> ..."
echo " reload [ -s ] [ -c ] [ -r <root user> ] [ <directory> ] <system>"
echo " reset [ <chain> ... ]"
echo " restart [ -n ] [ -p ] [ -f ] [ <directory> ]"
echo " restore [ -n ] [ <file name> ]"
echo " save [ <file name> ]"
echo " show [ -x ] [ -t {filter|mangle|nat} ] [ {chain [<chain> [ <chain> ... ]"
echo " show actions"
echo " show [ -f ] capabilities"
echo " show classifiers"
echo " show config"
echo " show connections"
echo " show dynamic <zone>"
echo " show filter"
echo " show ip"
echo " show [ -m ] log"
echo " show macros"
echo " show [ -x ] mangle|nat|raw|routing"
echo " show tc"
echo " show vardir"
echo " show zones"
echo " start [ -f ] [ -n ] [ -p ] [ <directory> ]"
echo " stop [ -f ]"
echo " status"
echo " try <directory> [ <timeout> ]"
echo " version [ -a ]"
echo " safe-start [ <directory> ]"
echo " safe-restart [ <directory> ]"
echo
exit $1
}
#
# Execution begins here
#
debugging=
if [ $# -gt 0 ] && [ "x$1" = "xdebug" -o "x$1" = "xtrace" ]; then
debugging=$1
shift
fi
nolock=
if [ $# -gt 0 ] && [ "$1" = "nolock" ]; then
nolock=nolock
shift
fi
SHOREWALL_DIR=
IPT_OPTIONS="-nv"
FAST=
VERBOSE_OFFSET=0
USE_VERBOSITY=
NOROUTES=
PURGE=
EXPORT=
export TIMESTAMP=
noroutes=
finished=0
while [ $finished -eq 0 ]; do
[ $# -eq 0 ] && usage 1
option=$1
case $option in
-)
finished=1
;;
-*)
option=${option#-}
while [ -n "$option" ]; do
case $option in
c)
[ $# -eq 1 ] && usage 1
if [ ! -d $2 ]; then
if [ -e $2 ]; then
echo "$2 is not a directory" >&2 && exit 2
else
echo "Directory $2 does not exist" >&2 && exit 2
fi
fi
SHOREWALL_DIR=$(resolve_file $2)
option=
shift
;;
e*)
EXPORT=Yes
option=${option#e}
;;
x*)
IPT_OPTIONS="-xnv"
option=${option#x}
;;
q*)
VERBOSE_OFFSET=$(($VERBOSE_OFFSET - 1 ))
option=${option#q}
;;
f*)
FAST=Yes
option=${option#f}
;;
v*)
option=${option#v}
case $option in
-1*)
USE_VERBOSITY=-1
option=${option#-1}
;;
0*)
USE_VERBOSITY=0
option=${option#0}
;;
1*)
USE_VERBOSITY=1
option=${option#1}
;;
2*)
USE_VERBOSITY=2
option=${option#2}
;;
*)
VERBOSE_OFFSET=$(($VERBOSE_OFFSET + 1 ))
USE_VERBOSITY=
;;
esac
;;
n*)
NOROUTES=Yes
option=${option#n}
;;
t*)
TIMESTAMP=Yes
option=${option#t}
;;
-)
finished=1
option=
;;
*)
usage 1
;;
esac
done
shift
;;
*)
finished=1
;;
esac
done
version_command() {
local finished
finished=0
local all
all=
while [ $finished -eq 0 -a $# -gt 0 ]; do
option=$1
case $option in
-*)
option=${option#-}
while [ -n "$option" ]; do
case $option in
-)
finished=1
option=
;;
a*)
all=Yes
option=${option#a}
;;
*)
usage 1
;;
esac
done
shift
;;
*)
finished=1
;;
esac
done
[ $# -gt 0 ] && usage 1
echo $version
}
if [ $# -eq 0 ]; then
usage 1
fi
[ -n "$SHOREWALL_DIR" ] && export SHOREWALL_DIR
PATH=/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/bin:/usr/local/sbin
MUTEX_TIMEOUT=
SHAREDIR=/usr/share/shorewall
CONFDIR=/etc/shorewall
export PRODUCT="Shorewall"
[ -f ${CONFDIR}/vardir ] && . ${CONFDIR}/vardir
[ -n "${VARDIR:=/var/lib/shorewall}" ]
if [ ! -f ${VARDIR}/firewall ]; then
[ -f ${VARDIR}/.restore ] && cp -f ${VARDIR}/.restore ${VARDIR}/firewall
fi
FIREWALL=${VARDIR}/firewall
LIBRARIES="$SHAREDIR/lib.base $SHAREDIR/lib.cli"
VERSION_FILE=$SHAREDIR/version
REFRESHCHAINS=
for library in $LIBRARIES; do
if [ -f $library ]; then
. $library
else
echo "$library does not exist!" >&2
exit 2
fi
done
if [ -f $VERSION_FILE ]; then
version=$(cat $VERSION_FILE)
else
echo " ERROR: Shorewall is not properly installed" >&2
echo " The file $VERSION_FILE does not exist" >&2
exit 1
fi
banner="Shorewall-$version Status at $HOSTNAME -"
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)
get_config Yes Yes
shift
start_command $@
;;
stop|clear)
get_config
[ $# -ne 1 ] && usage 1
[ -x $FIREWALL ] || fatal_error "Shorewall has never been started"
export NOROUTES
mutex_on
$SHOREWALL_SHELL $FIREWALL $debugging $nolock $COMMAND
mutex_off
;;
reset)
get_config
shift
mutex_on
reset_command $@
mutex_off
;;
compile)
get_config Yes
shift
compile_command $@
;;
restart)
get_config Yes Yes
shift
restart_command $@
;;
refresh)
get_config Yes Yes
shift
refresh_command $@
;;
check)
get_config Yes
shift
check_command $@
;;
show|list)
get_config Yes No Yes
shift
show_command $@
;;
load|reload)
get_config Yes
shift
reload_command $@
;;
export)
get_config Yes
shift
export_command $@
;;
status)
[ $# -eq 1 ] || usage 1
get_config
echo "Shorewall-$version Status at $HOSTNAME - $(date)"
echo
if shorewall_is_started ; then
echo "Shorewall is running"
status=0
else
echo "Shorewall 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)
get_config Yes No Yes
shift
dump_command $@
;;
hits)
get_config Yes No Yes
[ -n "$debugging" ] && set -x
shift
hits_command $@
;;
version)
shift
version_command $@
;;
try)
get_config Yes
shift
try_command $@
;;
logwatch)
get_config Yes Yes Yes
banner="Shorewall-$version Logwatch at $HOSTNAME -"
logwatch_command $@
;;
drop)
get_config
[ -n "$debugging" ] && set -x
[ $# -eq 1 ] && usage 1
if shorewall_is_started ; then
[ -n "$nolock" ] || mutex_on
block DROP Dropped $*
[ -n "$nolock" ] || mutex_off
else
fatal_error "Shorewall is not started"
fi
;;
logdrop)
get_config
[ -n "$debugging" ] && set -x
[ $# -eq 1 ] && usage 1
if shorewall_is_started ; then
[ -n "$nolock" ] || mutex_on
block logdrop Dropped $*
[ -n "$nolock" ] || mutex_off
else
fatal_error "Shorewall is not started"
fi
;;
reject|logreject)
get_config
[ -n "$debugging" ] && set -x
[ $# -eq 1 ] && usage 1
if shorewall_is_started ; then
[ -n "$nolock" ] || mutex_on
block $COMMAND Rejected $*
[ -n "$nolock" ] || mutex_off
else
fatal_error "Shorewall is not started"
fi
;;
allow)
get_config
allow_command $@
;;
add)
get_config
shift
add_command $@
;;
delete)
get_config
shift
delete_command $@
;;
save)
get_config
[ -n "$debugging" ] && set -x
case $# in
1)
;;
2)
RESTOREFILE="$2"
validate_restorefile '<restore file>'
;;
*)
usage 1
;;
esac
RESTOREPATH=${VARDIR}/$RESTOREFILE
[ -n "$nolock" ] || mutex_on
save_config
result=$?
[ -n "$nolock" ] || mutex_off
exit $result
;;
forget)
get_config
case $# in
1)
;;
2)
RESTOREFILE="$2"
validate_restorefile '<restore file>'
;;
*)
usage 1
;;
esac
RESTOREPATH=${VARDIR}/$RESTOREFILE
if [ -x $RESTOREPATH ]; then
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
[ $# -eq 2 ] || usage 1
case $2 in
*.*.*.*)
valid_address $2 || fatal_error "Invalid IP address: $2"
echo " $(decodeaddr $2)"
;;
*)
echo " $(encodeaddr $2)"
;;
esac
;;
restore)
get_config
shift
restore_command $@
;;
call)
get_config
[ -n "$debugging" ] && set -x
#
# Undocumented way to call functions in ${SHAREDIR}/functions directly
#
shift
$@
;;
help)
shift
usage
;;
safe-restart|safe-start)
get_config Yes
shift
safe_commands $@
;;
*)
usage 1
;;
esac
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