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shorewall_code/Shorewall6/lib.cli
Tom Eastep 2702d7f208 Implement header matching
2010-11-24 10:46:06 -08:00

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#!/bin/sh
#
# Shorewall6 4.2 -- /usr/share/shorewall6/lib.cli.
#
# 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 - Tom Eastep (teastep@shorewall.net)
#
# Complete documentation is available at http://shorewall.net
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of Version 2 of the GNU General Public License
# as published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
# This library contains the command processing code common to /sbin/shorewall6 and
# /sbin/shorewall6-lite.
#
#
# Fatal Error
#
fatal_error() # $@ = Message
{
echo " $@" >&2
exit 2
}
#
# Display a chain if it exists
#
showfirstchain() # $1 = name of chain
{
awk \
'BEGIN {prnt=0; rslt=1; }; \
/^$/ { next; };\
/^Chain/ {if ( prnt == 1 ) { rslt=0; exit 0; }; };\
/Chain '$1'/ { prnt=1; }; \
{ if (prnt == 1) print; };\
END { exit rslt; }' $TMPFILE
}
showchain() # $1 = name of chain
{
if [ "$firstchain" = "Yes" ]; then
if showfirstchain $1; then
firstchain=
fi
else
awk \
'BEGIN {prnt=0;};\
/^$|^ pkts/ { next; };\
/^Chain/ {if ( prnt == 1 ) exit; };\
/Chain '$1'/ { prnt=1; };\
{ if (prnt == 1) print; }' $TMPFILE
fi
}
#
# Validate the value of RESTOREFILE
#
validate_restorefile() # $* = label
{
case $RESTOREFILE in
*/*)
error_message "ERROR: $@ must specify a simple file name: $RESTOREFILE"
exit 2
;;
.safe|.try)
;;
.*|NONE)
error_message "ERROR: Reserved File Name: $RESTOREFILE"
exit 2
;;
esac
}
#
# Clear descriptor 1 if it is a terminal
#
clear_term() {
[ -t 1 ] && clear
}
#
# Delay $timeout seconds -- if we're running on a recent bash2 then allow
# <enter> to terminate the delay
#
timed_read ()
{
read -t $timeout foo 2> /dev/null
test $? -eq 2 && sleep $timeout
}
#
# Determine if 'syslog -C' is running
#
syslog_circular_buffer() {
local pid
local tty
local flags
local cputime
local path
local args
local arg
ps ax 2> /dev/null | while read pid tty flags cputime path args; do
case $path in
syslogd|*/syslogd)
for arg in $args; do
if [ x$arg = x-C ]; then
echo Yes
return
fi
done
;;
esac
done
}
#
# Display the last $1 packets logged
#
packet_log() # $1 = number of messages
{
if [ -n "$g_showmacs" -o $VERBOSITY -gt 2 ]; then
$g_logread | grep 'IN=.* OUT=.*SRC=.*:.*DST=' | head -n$1 | tac | sed -r 's/ kernel://; s/\[.*\] //; s/0000:/:/g; s/:::+/::/g; s/:0+/:/g' | sed s/" $host $LOGFORMAT"/" "/
else
$g_logread | grep 'IN=.* OUT=.*SRC=.*:.*DST=' | head -n$1 | tac | sed -r 's/ kernel://; s/MAC=.* SRC=/SRC=/; s/\[.*\] //; s/0000:/:/g; s/:::+/::/g; s/:0+/:/g' | sed s/" $host $LOGFORMAT"/" "/
fi
}
search_log() # $1 = IP address to search for
{
if [ -n "$g_showmacs" -o $VERBOSITY -gt 2 ]; then
$g_logread | grep 'IN=.* OUT=.*SRC=.*\..*DST=' | grep "$1" | tac | sed -r 's/ kernel://; s/\[.*\] //; s/0000:/:/g; s/:::+/::/g; s/:0+/:/g' | sed s/" $host $LOGFORMAT"/" "/
else
$g_logread | grep 'IN=.* OUT=.*SRC=.*\..*DST=' | grep "$1" | tac | sed -r 's/ kernel://; s/MAC=.* SRC=/SRC=/; s/\[.*\] //; s/0000:/:/g; s/:::+/::/g; s/:0+/:/g' | sed s/" $host $LOGFORMAT"/" "/
fi
}
#
# Show traffic control information
#
show_tc() {
show_one_tc() {
local device
device=${1%@*}
qdisc=$(tc qdisc list dev $device)
if [ -n "$qdisc" ]; then
echo Device $device:
tc -s -d qdisc show dev $device
echo
tc -s -d class show dev $device
echo
fi
}
if [ $# -gt 0 ]; then
show_one_tc $1
else
ip -o link list | while read inx interface details; do
show_one_tc ${interface%:}
done
fi
}
#
# Show classifier information
#
show_classifiers() {
show_one_classifier() {
local device
device=${1%@*}
qdisc=$(tc qdisc list dev $device)
if [ -n "$qdisc" ]; then
echo Device $device:
tc -s filter ls dev $device
echo
fi
}
ip -o link list | while read inx interface details; do
show_one_classifier ${interface%:}
done
}
#
# Watch the Firewall Log
#
logwatch() # $1 = timeout -- if negative, prompt each time that
# an 'interesting' packet count changes
{
if [ -z "$LOGFILE" ]; then
LOGFILE=/var/log/messages
if [ -n "$(syslog_circular_buffer)" ]; then
g_logread="logread | tac"
elif [ -r $LOGFILE ]; then
g_logread="tac $LOGFILE"
else
echo "LOGFILE ($LOGFILE) does not exist!" >&2
exit 2
fi
fi
host=$(echo $g_hostname | sed 's/\..*$//')
oldrejects=$($IP6TABLES -L -v -n | grep 'LOG')
if [ $1 -lt 0 ]; then
timeout=$((- $1))
pause="Yes"
else
pause="No"
timeout=$1
fi
qt mywhich awk && haveawk=Yes || haveawk=
while true; do
clear_term
echo "$banner $(date)"
echo
echo "Dropped/Rejected Packet Log ($LOGFILE)"
echo
show_reset
rejects=$($IP6TABLES -L -v -n | grep 'LOG')
if [ "$rejects" != "$oldrejects" ]; then
oldrejects="$rejects"
$g_ring_bell
packet_log 40
if [ "$pause" = "Yes" ]; then
echo
echo $g_echo_n 'Enter any character to continue: '
read foo
else
timed_read
fi
else
echo
packet_log 40
timed_read
fi
done
}
#
# Save currently running configuration
#
do_save() {
local status
status=0
if [ -f ${VARDIR}/firewall ]; then
if $iptables_save > ${VARDIR}/restore-$$; then
cp -f ${VARDIR}/firewall $g_restorepath
mv -f ${VARDIR}/restore-$$ ${g_restorepath}-iptables
chmod +x $g_restorepath
echo " Currently-running Configuration Saved to $g_restorepath"
run_user_exit save
else
rm -f ${VARDIR}/restore-$$
echo " ERROR: Currently-running Configuration Not Saved" >&2
status=1
fi
else
echo " ERROR: ${VARDIR}/firewall does not exist" >&2
status=1
fi
return $status
}
save_config() {
local result
result=1
iptables_save=${IP6TABLES}-save
[ -x $iptables_save ] || echo "$iptables_save does not exist or is not executable" >&2
if shorewall6_is_started ; then
[ -d ${VARDIR} ] || mkdir -p ${VARDIR}
if [ -f $g_restorepath -a ! -x $g_restorepath ]; then
echo " ERROR: $g_restorepath exists and is not a saved $g_product configuration" >&2
else
case $RESTOREFILE in
capabilities|chains|default_route|firewall|firewall.conf|nat|proxyarp|restarted|rt_tables|save|state|undo_routing|zones)
echo " ERROR: Reserved file name: $RESTOREFILE" >&2
;;
*)
validate_restorefile RESTOREFILE
if chain_exists dynamic; then
if $IP6TABLES -L dynamic -n > ${VARDIR}/save; then
echo " Dynamic Rules Saved"
do_save
else
echo "Error Saving the Dynamic Rules" >&2
fi
else
do_save && rm -f ${VARDIR}/save
fi
;;
esac
fi
else
echo "Shorewall6 isn't started" >&2
fi
return 0
}
#
# Show routing configuration
#
show_routing() {
if [ -n "$(ip -6 rule list)" ]; then
heading "Routing Rules"
ip -6 rule list
ip -6 rule list | while read rule; do
echo ${rule##* }
done | sort -u | while read table; do
heading "Table $table:"
ip -6 route list table $table
done
else
heading "Routing Table"
ip -6 route list
fi
}
#
# Show Filter - For Shorewall6-lite, if there was an scfilter file at compile-time,
# then the compiler generated another version of this function and
# embedded it in the firewall.conf file. That version supersedes this
# one.
#
show_connections_filter() {
local filter
local command
local first
command=${SHOREWALL_SHELL}
filter=$(find_file scfilter)
if [ -f $filter ]; then
first=$(head -n1 $filter)
case $first in
\#!*)
command=${first#\#!}
;;
esac
$command $filter
else
cat -
fi
}
#
# Show Command Executor
#
show_command() {
local finished
finished=0
local table
table=filter
local table_given
table_given=
show_macro() {
foo=`grep 'This macro' $macro | sed 's/This macro //'`
if [ -n "$foo" ]; then
macro=${macro#*.}
foo=${foo%.*}
if [ ${#macro} -gt 10 ]; then
echo " $macro ${foo#\#}"
else
$g_echo_e " $macro \t${foo#\#}"
fi
fi
}
while [ $finished -eq 0 -a $# -gt 0 ]; do
option=$1
case $option in
-*)
option=${option#-}
while [ -n "$option" ]; do
case $option in
-)
finished=1
option=
;;
v*)
VERBOSITY=$(($VERBOSITY + 1 ))
option=${option#v}
;;
x*)
g_ipt_options="-xnv"
option=${option#x}
;;
m*)
g_showmacs=Yes
option=${option#m}
;;
f*)
g_filemode=Yes
option=${option#f}
;;
t)
[ $# -eq 1 ] && usage 1
case $2 in
mangle|nat|filter|raw)
table=$2
table_given=Yes
;;
*)
fatal_error "Invalid table name ($s)"
;;
esac
option=
shift
;;
l*)
g_ipt_options1="--line-numbers"
option=${option#l}
;;
*)
usage 1
;;
esac
done
shift
;;
*)
finished=1
;;
esac
done
g_ipt_options="$g_ipt_options $g_ipt_options1"
[ -n "$g_debugging" ] && set -x
case "$1" in
connections)
[ $# -gt 1 ] && usage 1
if mywhich conntrack ; then
echo "$g_product $SHOREWALL_VERSION Connections at $g_hostname - $(date)"
echo
conntrack -f ipv6 -L | show_connections_filter
else
local count=$(cat /proc/sys/net/netfilter/nf_conntrack_count)
local max=$(cat /proc/sys/net/netfilter/nf_conntrack_max)
echo "$g_product $SHOREWALL_VERSION Connections ($count of $max) at $g_hostname - $(date)"
echo
grep '^ipv6' /proc/net/nf_conntrack | sed -r 's/0000:/:/g; s/:::+/::/g; s/:0+/:/g' | show_connections_filter
fi
;;
tos|mangle)
[ $# -gt 1 ] && usage 1
echo "$g_product $SHOREWALL_VERSION Mangle Table at $g_hostname - $(date)"
echo
show_reset
$IP6TABLES -t mangle -L $g_ipt_options
;;
raw)
[ $# -gt 1 ] && usage 1
echo "$g_product $SHOREWALL_VERSION raw Table at $g_hostname - $(date)"
echo
show_reset
$IP6TABLES -t raw -L $g_ipt_options
;;
log)
[ $# -gt 2 ] && usage 1
if [ -z "$LOGFILE" ]; then
LOGFILE=/var/log/messages
if [ -n "$(syslog_circular_buffer)" ]; then
g_logread="logread | tac"
elif [ -r $LOGFILE ]; then
g_logread="tac $LOGFILE"
else
echo "LOGFILE ($LOGFILE) does not exist!" >&2
exit 2
fi
fi
echo "$g_product $SHOREWALL_VERSION Log ($LOGFILE) at $g_hostname - $(date)"
echo
show_reset
host=$(echo $g_hostname | sed 's/\..*$//')
if [ $# -eq 2 ]; then
search_log $2
else
packet_log 20
fi
;;
tc)
[ $# -gt 2 ] && usage 1
echo "$g_product $SHOREWALL_VERSION Traffic Control at $g_hostname - $(date)"
echo
show_tc
;;
classifiers|filters)
[ $# -gt 1 ] && usage 1
echo "$g_product $SHOREWALL_VERSION Classifiers at $g_hostname - $(date)"
echo
show_classifiers
;;
zones)
[ $# -gt 1 ] && usage 1
if [ -f ${VARDIR}/zones ]; then
echo "$g_product $SHOREWALL_VERSION Zones at $g_hostname - $(date)"
echo
while read zone type hosts; do
echo "$zone ($type)"
for host in $hosts; do
case $host in
exclude)
echo " exclude:"
;;
*)
echo " $host"
;;
esac
done
done < ${VARDIR}/zones
echo
else
echo " ERROR: ${VARDIR}/zones does not exist" >&2
exit 1
fi
;;
capabilities)
[ $# -gt 1 ] && usage 1
determine_capabilities
VERBOSITY=2
if [ -n "$g_filemode" ]; then
report_capabilities1
else
report_capabilities
fi
;;
ip)
[ $# -gt 1 ] && usage 1
echo "$g_product $SHOREWALL_VERSION IP at $g_hostname - $(date)"
echo
ip -6 addr list
;;
routing)
[ $# -gt 1 ] && usage 1
echo "$g_product $SHOREWALL_VERSION Routing at $g_hostname - $(date)"
echo
show_routing
;;
config)
. ${SHAREDIR}/configpath
echo "Default CONFIG_PATH is $CONFIG_PATH"
[ -n "$LITEDIR" ] && echo "LITEDIR is $LITEDIR"
;;
chain)
shift
echo "$g_product $SHOREWALL_VERSION $([ $# -gt 1 ] && echo "Chains " || [ $# -gt 0 ] && echo "Chain " || echo $table Table)$* at $g_hostname - $(date)"
echo
show_reset
if [ $# -gt 0 ]; then
for chain in $*; do
$IP6TABLES -t $table -L $chain $g_ipt_options
done
else
$IP6TABLES -t $table -L $g_ipt_options
fi
;;
vardir)
echo $VARDIR;
;;
policies)
[ $# -gt 1 ] && usage 1
echo "$g_product $SHOREWALL_VERSION Policies at $g_hostname - $(date)"
echo
[ -f ${VARDIR}/policies ] && cat ${VARDIR}/policies;
;;
*)
if [ "$g_product" = Shorewall6 ]; then
case $1 in
actions)
[ $# -gt 1 ] && usage 1
echo "allowBcast # Accept Multicast and Anycast Packets"
echo "dropBcast # Silently Drop Multicast and Anycast Packets"
echo "allowInvalid # Accept packets that are in the INVALID conntrack state."
echo "dropInvalid # Silently Drop packets that are in the INVALID conntrack state"
echo "dropNotSyn # Silently Drop Non-syn TCP packets"
echo "rejNotSyn # Silently Reject Non-syn TCP packets"
if [ -f ${CONFDIR}/actions ]; then
cat ${SHAREDIR}/actions.std ${CONFDIR}/actions | grep -Ev '^\#|^$'
else
grep -Ev '^\#|^$' ${SHAREDIR}/actions.std
fi
return
;;
macros)
[ $# -gt 1 ] && usage 1
for directory in $(split $CONFIG_PATH); do
temp=
for macro in ${directory}/macro.*; do
case $macro in
*\*)
;;
*)
if [ -z "$temp" ]; then
echo
echo "Macros in $directory:"
echo
temp=Yes
fi
show_macro
;;
esac
done
done
return
;;
esac
fi
if [ $# -gt 0 ]; then
[ -n "$table_given" ] || for chain in $*; do
if ! qt $IP6TABLES -t $table -L $chain $g_ipt_options; then
error_message "ERROR: Chain '$chain' is not recognized by $IP6TABLES."
exit 1
fi
done
echo "$g_product $SHOREWALL_VERSION $([ $# -gt 1 ] && echo "Chains " || echo "Chain ")$* at $g_hostname - $(date)"
echo
show_reset
for chain in $*; do
$IP6TABLES -t $table -L $chain $g_ipt_options
done
else
echo "$g_product $SHOREWALL_VERSION $table Table at $g_hostname - $(date)"
echo
show_reset
$IP6TABLES -t $table -L $g_ipt_options
fi
;;
esac
}
#
# Dump Filter - For Shorewall-lite, if there was a dumpfilter file at compile-time,
# then the compiler generated another version of this function and
# embedded it in the firewall.conf file. That version supersedes this
# one.
#
dump_filter() {
local filter
local command
local first
command=${SHOREWALL_SHELL}
filter=$(find_file dumpfilter)
if [ -f $filter ]; then
first=$(head -n1 $filter)
case $first in
\#!*)
command=${first#\#!}
;;
esac
$command $filter
else
cat -
fi
}
#
# Dump Command Executor
#
do_dump_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 $option in
-)
finished=1
option=
;;
x*)
g_ipt_options="-xnv"
option=${option#x}
;;
m*)
g_showmacs=Yes
option=${option#m}
;;
l*)
g_ipt_options1="--line-numbers"
option=${option#l}
;;
*)
usage 1
;;
esac
done
shift
;;
*)
finished=1
;;
esac
done
if [ -z "$LOGFILE" ]; then
LOGFILE=/var/log/messages
if [ -n "$(syslog_circular_buffer)" ]; then
g_logread="logread | tac"
elif [ -r $LOGFILE ]; then
g_logread="tac $LOGFILE"
else
echo "LOGFILE ($LOGFILE) does not exist!" >&2
exit 2
fi
fi
g_ipt_options="$g_ipt_options $g_ipt_options1"
[ $VERBOSITY -lt 2 ] && VERBOSITY=2
[ -n "$g_debugging" ] && set -x
[ $# -eq 0 ] || usage 1
clear_term
echo "$g_product $SHOREWALL_VERSION Dump at $g_hostname - $(date)"
echo
if [ -f /usr/share/shorewall/version ]; then
echo " Shorewall $(cat /usr/share/shorewall/version)"
echo
fi
show_reset
host=$(echo $g_hostname | sed 's/\..*$//')
$IP6TABLES -L $g_ipt_options
heading "Log ($LOGFILE)"
packet_log 20
if qt $IP6TABLES -t mangle -L -n; then
heading "Mangle Table"
$IP6TABLES -t mangle -L $g_ipt_options
fi
if qt $IP6TABLES -t raw -L -n; then
heading "Raw Table"
$IP6TABLES -t raw -L $g_ipt_options
fi
local count=$(cat /proc/sys/net/netfilter/nf_conntrack_count)
local max=$(cat /proc/sys/net/netfilter/nf_conntrack_max)
heading "Conntrack Table ($count out of $max)"
grep '^ipv6' /proc/net/nf_conntrack
heading "IP Configuration"
ip -6 addr list
heading "IP Stats"
ip -stat link list
if qt mywhich brctl; then
heading "Bridges"
brctl show
fi
if qt mywhich setkey; then
heading "PFKEY SPD"
setkey -DP
heading "PFKEY SAD"
setkey -D | grep -Ev '^[[:space:]](A:|E:)' # Don't divulge the keys
fi
heading "/proc"
show_proc /proc/version
for directory in /proc/sys/net/ipv6/conf/*; do
for file in forwarding proxy_ra proxy_ndp; do
show_proc $directory/$file
done
done
show_routing
heading "Neighbors"
ip -6 neigh ls
if qt mywhich lsmod; then
heading "Modules"
lsmod | grep -E '^(x_|ip6|nf_|xt_)' | sort
fi
determine_capabilities
echo
report_capabilities
echo
netstat -6tunap
if [ -n "$TC_ENABLED" ]; then
heading "Traffic Control"
show_tc
heading "TC Filters"
show_classifiers
fi
}
dump_command() {
do_dump_command | dump_filter
}
#
# Restore Comand Executor
#
restore_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 $option in
-)
finished=1
option=
;;
n*)
g_noroutes=Yes
option=${option#n}
;;
*)
usage 1
;;
esac
done
shift
;;
*)
finished=1
;;
esac
done
case $# in
0)
;;
1)
RESTOREFILE="$1"
validate_restorefile '<restore file>'
;;
*)
usage 1
;;
esac
if [ -z "$STARTUP_ENABLED" ]; then
error_message "ERROR: Startup is disabled"
exit 2
fi
g_restorepath=${VARDIR}/$RESTOREFILE
[ -n "$nolock" ] || mutex_on
if [ -x $g_restorepath ]; then
if [ -x ${g_restorepath}-ipsets ] ; then
echo Restoring Ipsets...
$IP6TABLES -F
$IP6TABLES -X
$SHOREWALL_SHELL ${g_restorepath}-ipsets
fi
progress_message3 "Restoring Shorewall6..."
run_it $g_restorepath restore && progress_message3 "$g_product restored from ${VARDIR}/$RESTOREFILE"
[ -n "$nolock" ] || mutex_off
else
echo "File $g_restorepath: file not found"
[ -n "$nolock" ] || mutex_off
exit 2
fi
}
#
# Display the time that the counters were last reset
#
show_reset() {
[ -f ${VARDIR}/restarted ] && \
echo "Counters reset $(cat ${VARDIR}/restarted)" && \
echo
}
#
# Display's the passed file name followed by "=" and the file's contents.
#
show_proc() # $1 = name of a file
{
[ -f $1 ] && echo " $1 = $(cat $1)"
}
read_yesno_with_timeout() {
read -t 60 yn 2> /dev/null
if [ $? -eq 2 ]
then
# read doesn't support timeout
test -x /bin/bash || return 2 # bash is not installed so the feature is not available
/bin/bash -c 'read -t 60 yn ; if [ "$yn" == "y" ] ; then exit 0 ; else exit 1 ; fi' # invoke bash and use its version of read
return $?
else
# read supports timeout
case "$yn" in
y|Y)
return 0
;;
*)
return 1
;;
esac
fi
}
#
# Print a heading with leading and trailing black lines
#
heading() {
echo
echo "$@"
echo
}
#
# Create the appropriate -q option to pass onward
#
make_verbose() {
local v
v=$g_verbose_offset
local option
option=-
if [ -n "$g_use_verbosity" ]; then
echo "-v$g_use_verbosity"
elif [ $g_verbose_offset -gt 0 ]; then
while [ $v -gt 0 ]; do
option="${option}v"
v=$(($v - 1))
done
echo $option
elif [ $g_verbose_offset -lt 0 ]; then
while [ $v -lt 0 ]; do
option="${option}q"
v=$(($v + 1))
done
echo $option
fi
}
#
# Executor for drop,reject,... commands
#
block() # $1 = command, $2 = Finished, $3 - $n addresses
{
local chain
chain=$1
local finished
finished=$2
local which
which='-s'
local range
range='--src-range'
if ! chain_exists dynamic; then
echo "Dynamic blacklisting is not enabled in the current $g_product configuration" >&2
[ -n "$nolock" ] || mutex_off
exit 2
fi
shift 3
while [ $# -gt 0 ]; do
case $1 in
from)
which='-s'
range='--src-range'
shift
continue
;;
to)
which='-d'
range='--dst-range'
shift
continue
;;
*-*)
qt $IP6TABLES -D dynamic -m iprange $range $1 -j reject
qt $IP6TABLES -D dynamic -m iprange $range $1 -j DROP
qt $IP6TABLES -D dynamic -m iprange $range $1 -j logreject
qt $IP6TABLES -D dynamic -m iprange $range $1 -j logdrop
$IP6TABLES -A dynamic -m iprange $range $1 -j $chain || break 1
;;
*)
qt $IP6TABLES -D dynamic $which $1 -j reject
qt $IP6TABLES -D dynamic $which $1 -j DROP
qt $IP6TABLES -D dynamic $which $1 -j logreject
qt $IP6TABLES -D dynamic $which $1 -j logdrop
$IP6TABLES -A dynamic $which $1 -j $chain || break 1
;;
esac
echo "$1 $finished"
shift
done
}
#
# 'hits' commmand executor
#
hits_command() {
local finished
finished=0
local today
today=
while [ $finished -eq 0 -a $# -gt 0 ]; do
option=$1
case $option in
-*)
option=${option#-}
while [ -n "$option" ]; do
case $option in
-)
finished=1
option=
;;
t*)
today=$(date +'^%b %_d.*')
option=${option#t}
;;
*)
usage 1
;;
esac
done
shift
;;
*)
finished=1
;;
esac
done
[ $# -eq 0 ] || usage 1
clear_term
echo "$g_product $SHOREWALL_VERSION Hits at $g_hostname - $(date)"
echo
timeout=30
if $g_logread | grep -q "${today}IN=.* OUT=" ; then
echo " HITS IP DATE"
echo " ---- --------------- ------"
$g_logread | grep "${today}IN=.* OUT=" | sed 's/\(.\{6\}\)\(.*SRC=\)\(.*\)\( DST=.*\)/\3 \1/' | sort | uniq -c | sort -rn | while read count address month day; do
printf '%7d %-15s %3s %2d\n' $count $address $month $day
done
echo ""
echo " HITS IP PORT"
echo " ---- --------------- -----"
$g_logread | grep "${today}IN=.* OUT=" | sed 's/\(.*SRC=\)\(.*\)\( DST=.*DPT=\)\([0-9]\{1,5\}\)\(.*\)/\2 \4/
t
s/\(.*SRC=\)\(.*\)\( DST=.*\)/\2/' | sort | uniq -c | sort -rn | while read count address port; do
printf '%7d %-15s %d\n' $count $address $port
done
echo ""
echo " HITS DATE"
echo " ---- ------"
$g_logread | grep "${today}IN=.* OUT=" | sed 's/\(.\{6\}\)\(.*\)/\1/' | sort | uniq -c | sort -rn | while read count month day; do
printf '%7d %3s %2d\n' $count $month $day
done
echo ""
echo " HITS PORT SERVICE(S)"
echo " ---- ----- ----------"
$g_logread | grep "${today}IN=.* OUT=.*DPT" | sed 's/\(.*DPT=\)\([0-9]\{1,5\}\)\(.*\)/\2/' | sort | uniq -c | sort -rn | while read count port ; do
# List all services defined for the given port
srv=$(grep "^[^#].*\\b$port/" /etc/services | cut -f 1 | cut -f 1 -d' ' | sort -u)
srv=$(echo $srv | sed 's/ /,/g')
if [ -n "$srv" ] ; then
printf '%7d %5d %s\n' $count $port $srv
else
printf '%7d %5d\n' $count $port
fi
done
fi
}
#
# 'allow' command executor
#
allow_command() {
[ -n "$g_debugging" ] && set -x
[ $# -eq 1 ] && usage 1
if shorewall6_is_started ; then
local which
which='-s'
local range
range='--src-range'
if ! chain_exists dynamic; then
echo "Dynamic blacklisting is not enabled in the current $g_product configuration" >&2
exit 2
fi
[ -n "$nolock" ] || mutex_on
while [ $# -gt 1 ]; do
shift
case $1 in
from)
which='-s'
range='--src-range'
continue
;;
to)
which='-d'
range='--dst-range'
continue
;;
*-*)
if qt $IP6TABLES -D dynamic -m iprange $range $1 -j reject ||\
qt $IP6TABLES -D dynamic -m iprange $range $1 -j DROP ||\
qt $IP6TABLES -D dynamic -m iprange $range $1 -j logdrop ||\
qt $IP6TABLES -D dynamic -m iprange $range $1 -j logreject
then
echo "$1 Allowed"
else
echo "$1 Not Dropped or Rejected"
fi
;;
*)
if qt $IP6TABLES -D dynamic $which $1 -j reject ||\
qt $IP6TABLES -D dynamic $which $1 -j DROP ||\
qt $IP6TABLES -D dynamic $which $1 -j logdrop ||\
qt $IP6TABLES -D dynamic $which $1 -j logreject
then
echo "$1 Allowed"
else
echo "$1 Not Dropped or Rejected"
fi
;;
esac
done
[ -n "$nolock" ] || mutex_off
else
error_message "ERROR: $g_product is not started"
exit 2
fi
}
#
# 'logwatch' command executor
#
logwatch_command() {
shift
finished=0
while [ $finished -eq 0 -a $# -ne 0 ]; do
option=$1
case $option in
-*)
option=${option#-}
[ -z "$option" ] && usage 1
while [ -n "$option" ]; do
case $option in
v*)
VERBOSITY=$(($VERBOSITY + 1 ))
option=${option#v}
;;
q*)
VERBOSITY=$(($VERBOSITY - 1 ))
option=${option#q}
;;
m*)
g_showmacs=Yes
option=${option#m}
;;
-)
finished=1
option=
;;
*)
usage 1
;;
esac
done
shift
;;
*)
finished=1
;;
esac
done
[ -n "$g_debugging" ] && set -x
if [ $# -eq 1 ]; then
logwatch $1
elif [ $# -eq 0 ]; then
logwatch 30
else
usage 1
fi
}
#
# Determine which optional facilities are supported by iptables/netfilter
#
determine_capabilities() {
CONNTRACK_MATCH=
NEW_CONNTRACK_MATCH=
OLD_CONNTRACK_MATCH=
MULTIPORT=
XMULTIPORT=
POLICY_MATCH=
PHYSDEV_MATCH=
PHYSDEV_BRIDGE=
IPRANGE_MATCH=
RECENT_MATCH=
OWNER_MATCH=
IPSET_MATCH=
OLD_IPSET_MATCH=
CONNMARK=
XCONNMARK=
CONNMARK_MATCH=
XCONNMARK_MATCH=
RAW_TABLE=
IPP2P_MATCH=
OLD_IPP2P_MATCH=
LENGTH_MATCH=
CLASSIFY_TARGET=
ENHANCED_REJECT=
USEPKTTYPE=
KLUDGEFREE=
MARK=
XMARK=
EXMARK=
TPROXY_TARGET=
MANGLE_FORWARD=
COMMENTS=
ADDRTYPE=
TCPMSS_MATCH=
HASHLIMIT_MATCH=
NFQUEUE_TARGET=
REALM_MATCH=
HELPER_MATCH=
CONNLIMIT_MATCH=
TIME_MATCH=
GOTO_TARGET=
IPMARK_TARGET=
LOG_TARGET=Yes
FLOW_FILTER=
FWMARK_RT_MASK=
MARK_ANYWHERE=
HEADER_MATCH=
chain=fooX$$
[ -n "$IP6TABLES" ] || IP6TABLES=$(mywhich ip6tables)
if [ -z "$IP6TABLES" ]; then
echo " ERROR: No executable iptables binary can be found on your PATH" >&2
exit 1
fi
[ -n "$IP" ] || IP=$(which ip)
[ -n "$IP" -a -x "$IP" ] || IP=
[ "$TC" = tc -o -z "$TC" ] && TC=$(which tc)
[ -n "$TC" -a -x "$TC" ] || TC=
qt $IP6TABLES -t mangle -L -n && MANGLE_ENABLED=Yes || MANGLE_ENABLED=
qt $IP6TABLES -F $chain
qt $IP6TABLES -X $chain
if ! $IP6TABLES -N $chain; then
echo " ERROR: The command \"$IP6TABLES -N $chain\" failed" >&2
exit 1
fi
chain1=${chain}1
qt $IP6TABLES -F $chain1
qt $IP6TABLES -X $chain1
if ! $IP6TABLES -N $chain1; then
echo " ERROR: The command \"$IP6TABLES -N $chain1\" failed" >&2
exit 1
fi
if ! qt $IP6TABLES -A $chain -m state --state ESTABLISHED,RELATED -j ACCEPT &&
! qt $IP6TABLES -A $chain -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT; then
echo " ERROR: Your kernel lacks connection tracking and/or state matching -- Shorewall will not run on this system" >&2
exit 1
fi
qt $IP6TABLES -A $chain -m conntrack --ctorigdst ::1 -j ACCEPT && CONNTRACK_MATCH=Yes
if [ -n "$CONNTRACK_MATCH" ]; then
qt $IP6TABLES -A $chain -m conntrack -p tcp --ctorigdstport 22 -j ACCEPT && NEW_CONNTRACK_MATCH=Yes
qt $IP6TABLES -A $chain -m conntrack ! --ctorigdst ::1 || OLD_CONNTRACK_MATCH=Yes
fi
if qt $IP6TABLES -A $chain -p tcp -m multiport --dports 21,22 -j ACCEPT; then
MULTIPORT=Yes
qt $IP6TABLES -A $chain -p tcp -m multiport --sports 60 -m multiport --dports 99 -j ACCEPT && KLUDEFREE=Yes
fi
qt $IP6TABLES -A $chain -p tcp -m multiport --dports 21:22 -j ACCEPT && XMULTIPORT=Yes
qt $IP6TABLES -A $chain -m policy --pol ipsec --mode tunnel --dir in -j ACCEPT && POLICY_MATCH=Yes
if qt $IP6TABLES -A $chain -m physdev --physdev-out eth0 -j ACCEPT; then
PHYSDEV_MATCH=Yes
qt $IP6TABLES -A $chain -m physdev --physdev-is-bridged --physdev-in eth0 --physdev-out eth0 -j ACCEPT && PHYSDEV_BRIDGE=Yes
if [ -z "${KLUDGEFREE}" ]; then
qt $IP6TABLES -A $chain -m physdev --physdev-in eth0 -m physdev --physdev-out eth0 -j ACCEPT && KLUDGEFREE=Yes
fi
fi
if qt $IP6TABLES -A $chain -m iprange --src-range ::1-::2 -j ACCEPT; then
IPRANGE_MATCH=Yes
if [ -z "${KLUDGEFREE}" ]; then
qt $IP6TABLES -A $chain -m iprange --src-range ::1-::2 -m iprange --dst-range ::1-::2 -j ACCEPT && KLUDGEFREE=Yes
fi
fi
qt $IP6TABLES -A $chain -m recent --update -j ACCEPT && RECENT_MATCH=Yes
qt $IP6TABLES -A $chain -m owner --uid-owner 0 -j ACCEPT && OWNER_MATCH=Yes
if qt $IP6TABLES -A $chain -m connmark --mark 2 -j ACCEPT; then
CONNMARK_MATCH=Yes
qt $IP6TABLES -A $chain -m connmark --mark 2/0xFF -j ACCEPT && XCONNMARK_MATCH=Yes
fi
qt $IP6TABLES -A $chain -p tcp -m ipp2p --edk -j ACCEPT && IPP2P_MATCH=Yes
if [ -n "$IPP2P_MATCH" ]; then
qt $IP6TABLES -A $chain -p tcp -m ipp2p --ipp2p -j ACCEPT && OLD_IPP2P_MATCH=Yes
fi
qt $IP6TABLES -A $chain -m length --length 10:20 -j ACCEPT && LENGTH_MATCH=Yes
qt $IP6TABLES -A $chain -j REJECT --reject-with icmp6-adm-prohibited && ENHANCED_REJECT=Yes
qt $IP6TABLES -A $chain -j ACCEPT -m comment --comment "This is a comment" && COMMENTS=Yes
if [ -n "$MANGLE_ENABLED" ]; then
qt $IP6TABLES -t mangle -N $chain
if qt $IP6TABLES -t mangle -A $chain -j MARK --set-mark 1; then
MARK=Yes
qt $IP6TABLES -t mangle -A $chain -j MARK --and-mark 0xFF && XMARK=Yes
qt $IP6TABLES -t mangle -A $chain -j MARK --set-mark 1/0xFF && EXMARK=Yes
fi
if qt $IP6TABLES -t mangle -A $chain -j CONNMARK --save-mark; then
CONNMARK=Yes
qt $IP6TABLES -t mangle -A $chain -j CONNMARK --save-mark --mask 0xFF && XCONNMARK=Yes
fi
qt $IP6TABLES -t mangle -A $chain -j CLASSIFY --set-class 1:1 && CLASSIFY_TARGET=Yes
qt $IP6TABLES -t mangle -A $chain -j IPMARK --addr src && IPMARK_TARGET=Yes
qt $IP6TABLES -t mangle -A $chain -p tcp -j TPROXY --on-port 0 --tproxy-mark 1 && TPROXY_TARGET=Yes
qt $IP6TABLES -t mangle -F $chain
qt $IP6TABLES -t mangle -X $chain
qt $IP6TABLES -t mangle -L FORWARD -n && MANGLE_FORWARD=Yes
fi
qt $IP6TABLES -t raw -L -n && RAW_TABLE=Yes
if qt mywhich ipset; then
qt ipset -X $chain # Just in case something went wrong the last time
if qt ipset -N $chain iphash ; then
if qt $IP6TABLES -A $chain -m set --set $chain src -j ACCEPT; then
qt $IP6TABLES -D $chain -m set --set $chain src -j ACCEPT
IPSET_MATCH=Yes
fi
qt ipset -X $chain
fi
fi
qt $IP6TABLES -A $chain -m pkttype --pkt-type broadcast -j ACCEPT && USEPKTTYPE=Yes
qt $IP6TABLES -A $chain -m addrtype --src-type BROADCAST -j ACCEPT && ADDRTYPE=Yes
qt $IP6TABLES -A $chain -p tcp --tcp-flags SYN,RST SYN -m tcpmss --mss 1000:1500 -j ACCEPT && TCPMSS_MATCH=Yes
qt $IP6TABLES -A $chain -m hashlimit --hashlimit-upto 4 --hashlimit-burst 5 --hashlimit-name $chain --hashlimit-mode dstip -j ACCEPT && HASHLIMIT_MATCH=Yes
if [ -z "$HASHLIMIT_MATCH" ]; then
qt $IP6TABLES -A $chain -m hashlimit --hashlimit 4 --hashlimit-burst 5 --hashlimit-name $chain --hashlimit-mode dstip -j ACCEPT && OLD_HL_MATCH=Yes
HASHLIMIT_MATCH=$OLD_HL_MATCH
fi
qt $IP6TABLES -A $chain -j NFQUEUE --queue-num 4 && NFQUEUE_TARGET=Yes
qt $IP6TABLES -A $chain -m realm --realm 4 && REALM_MATCH=Yes
qt $IP6TABLES -A $chain -m helper --helper "ftp" && HELPER_MATCH=Yes
qt $IP6TABLES -A $chain -m connlimit --connlimit-above 8 -j DROP && CONNLIMIT_MATCH=Yes
qt $IP6TABLES -A $chain -m time --timestart 23:00 -j DROP && TIME_MATCH=Yes
qt $IP6TABLES -A $chain -g $chain1 && GOTO_TARGET=Yes
qt $IP6TABLES -A $chain -j LOG || LOG_TARGET=
qt $IP6TABLES -A $chain -j MARK --set-mark 5 && MARK_ANYWHERE=Yes
qt $IP6TABLES -A $chain -m ipv6header --header 255 && HEADER_MATCH=Yes
qt $IP6TABLES -F $chain
qt $IP6TABLES -X $chain
qt $IP6TABLES -F $chain1
qt $IP6TABLES -X $chain1
[ -n "$TC" ] && $TC filter add flow help 2>&1 | grep -q ^Usage && FLOW_FILTER=Yes
[ -n "$IP" ] && $IP rule add help 2>&1 | grep -q /MASK && FWMARK_RT_MASK=Yes
CAPVERSION=$SHOREWALL_CAPVERSION
KERNELVERSION=$(printf "%d%02d%02d" $(uname -r 2> /dev/null | sed -e 's/-.*//' -e 's/^\([0-9][0-9]*\)\.\([0-9][0-9]*\)\.\([0-9][0-9]*\).*$/\1 \2 \3/g'))
}
report_capabilities() {
report_capability() # $1 = Capability Description , $2 Capability Setting (if any)
{
local setting
setting=
[ "x$2" = "xYes" ] && setting="Available" || setting="Not available"
echo " " $1: $setting
}
if [ $VERBOSITY -gt 1 ]; then
echo "Shorewall6 has detected the following ip6tables/netfilter capabilities:"
report_capability "Packet Mangling" $MANGLE_ENABLED
report_capability "Multi-port Match" $MULTIPORT
[ -n "$MULTIPORT" ] && report_capability "Extended Multi-port Match" $XMULTIPORT
report_capability "Connection Tracking Match" $CONNTRACK_MATCH
if [ -n "$CONNTRACK_MATCH" ]; then
report_capability "Extended Connection Tracking Match Support" $NEW_CONNTRACK_MATCH
[ -n "$OLD_CONNTRACK_MATCH" ] && report_capability "Old Connection Tracking Match Syntax" $OLD_CONNTRACK_MATCH
fi
report_capability "Packet Type Match" $USEPKTTYPE
report_capability "Policy Match" $POLICY_MATCH
report_capability "Physdev Match" $PHYSDEV_MATCH
report_capability "Physdev-is-bridged Support" $PHYSDEV_BRIDGE
report_capability "Packet length Match" $LENGTH_MATCH
report_capability "IP range Match" $IPRANGE_MATCH
report_capability "Recent Match" $RECENT_MATCH
report_capability "Owner Match" $OWNER_MATCH
if [ -n "$IPSET_MATCH" ]; then
report_capability "Ipset Match" $IPSET_MATCH
[ -n "$OLD_IPSET_MATCH" ] && report_capability "OLD_Ipset Match" $OLD_IPSET_MATCH
fi
report_capability "CONNMARK Target" $CONNMARK
[ -n "$CONNMARK" ] && report_capability "Extended CONNMARK Target" $XCONNMARK
report_capability "Connmark Match" $CONNMARK_MATCH
[ -n "$CONNMARK_MATCH" ] && report_capability "Extended Connmark Match" $XCONNMARK_MATCH
report_capability "Raw Table" $RAW_TABLE
report_capability "IPP2P Match" $IPP2P_MATCH
[ -n "$OLD_IPP2P_MATCH" ] && report_capability "Old IPP2P Match Syntax" $OLD_IPP2P_MATCH
report_capability "CLASSIFY Target" $CLASSIFY_TARGET
report_capability "Extended REJECT" $ENHANCED_REJECT
report_capability "Repeat match" $KLUDGEFREE
report_capability "MARK Target" $MARK
[ -n "$MARK" ] && report_capability "Extended MARK Target" $XMARK
[ -n "$XMARK" ] && report_capability "Extended MARK Target 2" $EXMARK
report_capability "Mangle FORWARD Chain" $MANGLE_FORWARD
report_capability "Comments" $COMMENTS
report_capability "Address Type Match" $ADDRTYPE
report_capability "TCPMSS Match" $TCPMSS_MATCH
report_capability "Hashlimit Match" $HASHLIMIT_MATCH
[ -n "$OLD_HL_MATCH" ] && report_capability "Old Hashlimit Match" $OLD_HL_MATCH
report_capability "NFQUEUE Target" $NFQUEUE_TARGET
report_capability "Realm Match" $REALM_MATCH
report_capability "Helper Match" $HELPER_MATCH
report_capability "Connlimit Match" $CONNLIMIT_MATCH
report_capability "Time Match" $TIME_MATCH
report_capability "Goto Support" $GOTO_TARGET
report_capability "IPMARK Target" $IPMARK_TARGET
report_capability "LOG Target" $LOG_TARGET
report_capability "TPROXY Target" $TPROXY_TARGET
report_capability "FLOW Classifier" $FLOW_FILTER
report_capability "fwmark route mask" $FWMARK_RT_MASK
report_capability "Mark in any table" $MARK_ANYWHERE
report_capability "Header Match" $HEADER_MATCH
fi
[ -n "$PKTTYPE" ] || USEPKTTYPE=
}
report_capabilities1() {
report_capability1() # $1 = Capability
{
eval echo $1=\$$1
}
echo "#"
echo "# Shorewall6 $SHOREWALL_VERSION detected the following ip6tables/netfilter capabilities - $(date)"
echo "#"
report_capability1 MANGLE_ENABLED
report_capability1 MULTIPORT
report_capability1 XMULTIPORT
report_capability1 CONNTRACK_MATCH
report_capability1 NEW_CONNTRACK_MATCH
report_capability1 OLD_CONNTRACK_MATCH
report_capability1 USEPKTTYPE
report_capability1 POLICY_MATCH
report_capability1 PHYSDEV_MATCH
report_capability1 PHYSDEV_BRIDGE
report_capability1 LENGTH_MATCH
report_capability1 IPRANGE_MATCH
report_capability1 RECENT_MATCH
report_capability1 OWNER_MATCH
report_capability1 IPSET_MATCH
report_capability1 OLD_IPSET_MATCH
report_capability1 CONNMARK
report_capability1 XCONNMARK
report_capability1 CONNMARK_MATCH
report_capability1 XCONNMARK_MATCH
report_capability1 RAW_TABLE
report_capability1 IPP2P_MATCH
report_capability1 OLD_IPP2P_MATCH
report_capability1 CLASSIFY_TARGET
report_capability1 ENHANCED_REJECT
report_capability1 KLUDGEFREE
report_capability1 MARK
report_capability1 XMARK
report_capability1 EXMARK
report_capability1 MANGLE_FORWARD
report_capability1 COMMENTS
report_capability1 ADDRTYPE
report_capability1 TCPMSS_MATCH
report_capability1 HASHLIMIT_MATCH
report_capability1 OLD_HL_MATCH
report_capability1 NFQUEUE_TARGET
report_capability1 REALM_MATCH
report_capability1 HELPER_MATCH
report_capability1 CONNLIMIT_MATCH
report_capability1 TIME_MATCH
report_capability1 GOTO_TARGET
report_capability1 IPMARK_TARGET
report_capability1 LOG_TARGET
report_capability1 TPROXY_TARGET
report_capability1 FLOW_FILTER
report_capability1 FWMARK_RT_MASK
report_capability1 MARK_ANYWHERE
report_capability1 HEADER_MATCH
echo CAPVERSION=$SHOREWALL_CAPVERSION
echo KERNELVERSION=$KERNELVERSION
}
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