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fwbuilder/test/ipt/test-shadowing-1.fw.orig
Vadim Kurland f366e2dc66 * PolicyCompiler_PrintRule.cpp (_printOptionalGlobalRules): SF bug 
3178186 "Add ND/NS allow rules for the FORWARD chain". Rules that are
added automatically to ipv6 Linux firewall to permit neighbor discovery
packets should be also added to the FORWARD chain if the firewall is
a bridge.

see #2323
2011-04-10 17:58:32 -07:00

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#!/bin/sh
#
# This is automatically generated file. DO NOT MODIFY !
#
# Firewall Builder fwb_ipt v4.2.0.3523
#
# Generated Sun Apr 10 17:53:53 2011 PDT by vadim
#
# files: * test-shadowing-1.fw /etc/test-shadowing-1.fw
#
# Compiled for iptables (any version)
#
# testing shadowing detection
# compiler runs with -xt flag
# firewall is assumed to be part of any
# test-shadowing-1:Policy:0: error: Rule '0 (eth0)' shadows rule '1 (eth0)' below it
# test-shadowing-1:Policy:2: error: Rule '2 (global)' shadows rule '3 (global)' below it
# test-shadowing-1:Policy:2: error: Rule '2 (global)' shadows rule '3 (global)' below it
# test-shadowing-1:Policy:2: error: Rule '2 (global)' shadows rule '3 (global)' below it
# test-shadowing-1:Policy:4: error: Rule '4 (global)' shadows rule '5 (global)' below it
# test-shadowing-1:Policy:6: error: Rule '6 (global)' shadows rule '7 (global)' below it
# test-shadowing-1:Policy:8: error: Rule '8 (global)' shadows rule '9 (global)' below it
FWBDEBUG=""
PATH="/sbin:/usr/sbin:/bin:/usr/bin:${PATH}"
export PATH
LSMOD="/sbin/lsmod"
MODPROBE="/sbin/modprobe"
IPTABLES="/sbin/iptables"
IP6TABLES="/sbin/ip6tables"
IPTABLES_RESTORE="/sbin/iptables-restore"
IP6TABLES_RESTORE="/sbin/ip6tables-restore"
IP="/sbin/ip"
IFCONFIG="/sbin/ifconfig"
VCONFIG="/sbin/vconfig"
BRCTL="/sbin/brctl"
IFENSLAVE="/sbin/ifenslave"
IPSET="/usr/sbin/ipset"
LOGGER="/usr/bin/logger"
log() {
echo "$1"
command -v "$LOGGER" >/dev/null 2>&1 && $LOGGER -p info "$1"
}
getInterfaceVarName() {
echo $1 | sed 's/\./_/'
}
getaddr_internal() {
dev=$1
name=$2
af=$3
L=$($IP $af addr show dev $dev | sed -n '/inet/{s!.*inet6* !!;s!/.*!!p}' | sed 's/peer.*//')
test -z "$L" && {
eval "$name=''"
return
}
eval "${name}_list=\"$L\""
}
getaddr() {
getaddr_internal $1 $2 "-4"
}
getaddr6() {
getaddr_internal $1 $2 "-6"
}
# function getinterfaces is used to process wildcard interfaces
getinterfaces() {
NAME=$1
$IP link show | grep ": $NAME" | while read L; do
OIFS=$IFS
IFS=" :"
set $L
IFS=$OIFS
echo $2
done
}
diff_intf() {
func=$1
list1=$2
list2=$3
cmd=$4
for intf in $list1
do
echo $list2 | grep -q $intf || {
# $vlan is absent in list 2
$func $intf $cmd
}
done
}
find_program() {
PGM=$1
command -v $PGM >/dev/null 2>&1 || {
echo "$PGM not found"
exit 1
}
}
check_tools() {
find_program $IPTABLES
find_program $MODPROBE
find_program $IP
}
reset_iptables_v4() {
$IPTABLES -P OUTPUT DROP
$IPTABLES -P INPUT DROP
$IPTABLES -P FORWARD DROP
cat /proc/net/ip_tables_names | while read table; do
$IPTABLES -t $table -L -n | while read c chain rest; do
if test "X$c" = "XChain" ; then
$IPTABLES -t $table -F $chain
fi
done
$IPTABLES -t $table -X
done
}
reset_iptables_v6() {
$IP6TABLES -P OUTPUT DROP
$IP6TABLES -P INPUT DROP
$IP6TABLES -P FORWARD DROP
cat /proc/net/ip6_tables_names | while read table; do
$IP6TABLES -t $table -L -n | while read c chain rest; do
if test "X$c" = "XChain" ; then
$IP6TABLES -t $table -F $chain
fi
done
$IP6TABLES -t $table -X
done
}
P2P_INTERFACE_WARNING=""
missing_address() {
address=$1
cmd=$2
oldIFS=$IFS
IFS="@"
set $address
addr=$1
interface=$2
IFS=$oldIFS
$IP addr show dev $interface | grep -q POINTOPOINT && {
test -z "$P2P_INTERFACE_WARNING" && echo "Warning: Can not update address of interface $interface. fwbuilder can not manage addresses of point-to-point interfaces yet"
P2P_INTERFACE_WARNING="yes"
return
}
test "$cmd" = "add" && {
echo "# Adding ip address: $interface $addr"
echo $addr | grep -q ':' && {
$FWBDEBUG $IP addr $cmd $addr dev $interface
} || {
$FWBDEBUG $IP addr $cmd $addr broadcast + dev $interface
}
}
test "$cmd" = "del" && {
echo "# Removing ip address: $interface $addr"
$FWBDEBUG $IP addr $cmd $addr dev $interface || exit 1
}
$FWBDEBUG $IP link set $interface up
}
list_addresses_by_scope() {
interface=$1
scope=$2
ignore_list=$3
$IP addr ls dev $interface | \
awk -v IGNORED="$ignore_list" -v SCOPE="$scope" \
'BEGIN {
split(IGNORED,ignored_arr);
for (a in ignored_arr) {ignored_dict[ignored_arr[a]]=1;}
}
(/inet |inet6 / && $0 ~ SCOPE && !($2 in ignored_dict)) {print $2;}' | \
while read addr; do
echo "${addr}@$interface"
done | sort
}
update_addresses_of_interface() {
ignore_list=$2
set $1
interface=$1
shift
FWB_ADDRS=$(
for addr in $*; do
echo "${addr}@$interface"
done | sort
)
CURRENT_ADDRS_ALL_SCOPES=""
CURRENT_ADDRS_GLOBAL_SCOPE=""
$IP link show dev $interface >/dev/null 2>&1 && {
CURRENT_ADDRS_ALL_SCOPES=$(list_addresses_by_scope $interface 'scope .*' "$ignore_list")
CURRENT_ADDRS_GLOBAL_SCOPE=$(list_addresses_by_scope $interface 'scope global' "$ignore_list")
} || {
echo "# Interface $interface does not exist"
# Stop the script if we are not in test mode
test -z "$FWBDEBUG" && exit 1
}
diff_intf missing_address "$FWB_ADDRS" "$CURRENT_ADDRS_ALL_SCOPES" add
diff_intf missing_address "$CURRENT_ADDRS_GLOBAL_SCOPE" "$FWB_ADDRS" del
}
clear_addresses_except_known_interfaces() {
$IP link show | sed 's/://g' | awk -v IGNORED="$*" \
'BEGIN {
split(IGNORED,ignored_arr);
for (a in ignored_arr) {ignored_dict[ignored_arr[a]]=1;}
}
(/state/ && !($2 in ignored_dict)) {print $2;}' | \
while read intf; do
echo "# Removing addresses not configured in fwbuilder from interface $intf"
$FWBDEBUG $IP addr flush dev $intf scope global
$FWBDEBUG $IP link set $intf down
done
}
check_file() {
test -r "$2" || {
echo "Can not find file $2 referenced by address table object $1"
exit 1
}
}
check_run_time_address_table_files() {
:
}
load_modules() {
:
OPTS=$1
MODULES_DIR="/lib/modules/`uname -r`/kernel/net/"
MODULES=$(find $MODULES_DIR -name '*conntrack*' \! -name '*ipv6*'|sed -e 's/^.*\///' -e 's/\([^\.]\)\..*/\1/')
echo $OPTS | grep -q nat && {
MODULES="$MODULES $(find $MODULES_DIR -name '*nat*'|sed -e 's/^.*\///' -e 's/\([^\.]\)\..*/\1/')"
}
echo $OPTS | grep -q ipv6 && {
MODULES="$MODULES $(find $MODULES_DIR -name nf_conntrack_ipv6|sed -e 's/^.*\///' -e 's/\([^\.]\)\..*/\1/')"
}
for module in $MODULES; do
if $LSMOD | grep ${module} >/dev/null; then continue; fi
$MODPROBE ${module} || exit 1
done
}
verify_interfaces() {
:
echo "Verifying interfaces: eth0 eth1 eth2"
for i in eth0 eth1 eth2 ; do
$IP link show "$i" > /dev/null 2>&1 || {
log "Interface $i does not exist"
exit 1
}
done
}
prolog_commands() {
echo "Running prolog script"
}
epilog_commands() {
echo "Running epilog script"
}
run_epilog_and_exit() {
epilog_commands
exit $1
}
configure_interfaces() {
:
# Configure interfaces
update_addresses_of_interface "eth0 22.22.22.22/24" ""
update_addresses_of_interface "eth1 192.168.1.1/24" ""
update_addresses_of_interface "eth2 192.168.2.1/24" ""
}
script_body() {
# ================ IPv4
# ================ Table 'filter', automatic rules
# accept established sessions
$IPTABLES -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
$IPTABLES -A OUTPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
$IPTABLES -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT
# ================ Table 'filter', rule set Policy
#
# Rule 0 (eth0)
#
echo "Rule 0 (eth0)"
#
# shades rule below
# test-shadowing-1:Policy:0: error: Rule '0 (eth0)' shadows rule '1 (eth0)' below it
$IPTABLES -A OUTPUT -o eth0 -s 192.168.1.0/24 -m state --state NEW -j ACCEPT
$IPTABLES -A FORWARD -o eth0 -s 192.168.1.0/24 -m state --state NEW -j ACCEPT
#
# Rule 1 (eth0)
#
echo "Rule 1 (eth0)"
#
$IPTABLES -N Out_RULE_1
$IPTABLES -A FORWARD -o eth0 -s 192.168.1.10 -j Out_RULE_1
$IPTABLES -A Out_RULE_1 -j LOG --log-level info --log-prefix "RULE 1 -- DENY "
$IPTABLES -A Out_RULE_1 -j DROP
#
# Rule 2 (global)
#
echo "Rule 2 (global)"
#
# firewall is part
# of any for this rule
# test-shadowing-1:Policy:2: error: Rule '2 (global)' shadows rule '3 (global)' below it
$IPTABLES -A OUTPUT -p tcp -m tcp --dport 80 -m state --state NEW -j ACCEPT
$IPTABLES -A INPUT -p tcp -m tcp --dport 80 -m state --state NEW -j ACCEPT
$IPTABLES -A FORWARD -p tcp -m tcp --dport 80 -m state --state NEW -j ACCEPT
#
# Rule 3 (global)
#
echo "Rule 3 (global)"
#
$IPTABLES -N Cid4514B3E62143.0
$IPTABLES -A INPUT -p tcp -m tcp --dport 80 -j Cid4514B3E62143.0
$IPTABLES -A Cid4514B3E62143.0 -s 22.22.22.22 -j DROP
$IPTABLES -A Cid4514B3E62143.0 -s 192.168.1.1 -j DROP
$IPTABLES -A Cid4514B3E62143.0 -s 192.168.2.1 -j DROP
$IPTABLES -A OUTPUT -p tcp -m tcp --dport 80 -j DROP
#
# Rule 4 (global)
#
echo "Rule 4 (global)"
#
# test-shadowing-1:Policy:4: error: Rule '4 (global)' shadows rule '5 (global)' below it
$IPTABLES -A INPUT -p tcp -m tcp -s 192.168.1.0/24 -m state --state NEW -j ACCEPT
$IPTABLES -A OUTPUT -p tcp -m tcp -s 192.168.1.0/24 -m state --state NEW -j ACCEPT
$IPTABLES -A FORWARD -p tcp -m tcp -s 192.168.1.0/24 -m state --state NEW -j ACCEPT
#
# Rule 5 (global)
#
echo "Rule 5 (global)"
#
$IPTABLES -A INPUT -p tcp -m tcp -s 192.168.1.0/24 --dport 21 -j DROP
$IPTABLES -A OUTPUT -p tcp -m tcp -s 192.168.1.0/24 --dport 21 -j DROP
$IPTABLES -A FORWARD -p tcp -m tcp -s 192.168.1.0/24 --dport 21 -j DROP
#
# Rule 6 (global)
#
echo "Rule 6 (global)"
#
# test-shadowing-1:Policy:6: error: Rule '6 (global)' shadows rule '7 (global)' below it
$IPTABLES -A INPUT -p udp -m udp -s 192.168.1.0/24 -m state --state NEW -j ACCEPT
$IPTABLES -A OUTPUT -p udp -m udp -s 192.168.1.0/24 -m state --state NEW -j ACCEPT
$IPTABLES -A FORWARD -p udp -m udp -s 192.168.1.0/24 -m state --state NEW -j ACCEPT
#
# Rule 7 (global)
#
echo "Rule 7 (global)"
#
$IPTABLES -A INPUT -p udp -m udp -s 192.168.1.0/24 --dport 123 -j DROP
$IPTABLES -A OUTPUT -p udp -m udp -s 192.168.1.0/24 --dport 123 -j DROP
$IPTABLES -A FORWARD -p udp -m udp -s 192.168.1.0/24 --dport 123 -j DROP
#
# Rule 8 (global)
#
echo "Rule 8 (global)"
#
# this rule should shadow rule below it because
# it uses IPService object with protocol 0
# test-shadowing-1:Policy:8: error: Rule '8 (global)' shadows rule '9 (global)' below it
$IPTABLES -A INPUT -p all -s 192.168.1.0/24 -m state --state NEW -j ACCEPT
$IPTABLES -A OUTPUT -p all -s 192.168.1.0/24 -m state --state NEW -j ACCEPT
$IPTABLES -A FORWARD -p all -s 192.168.1.0/24 -m state --state NEW -j ACCEPT
#
# Rule 9 (global)
#
echo "Rule 9 (global)"
#
$IPTABLES -A INPUT -p icmp -m icmp -s 192.168.1.0/24 --icmp-type 0/0 -j DROP
$IPTABLES -A OUTPUT -p icmp -m icmp -s 192.168.1.0/24 --icmp-type 0/0 -j DROP
$IPTABLES -A FORWARD -p icmp -m icmp -s 192.168.1.0/24 --icmp-type 0/0 -j DROP
}
ip_forward() {
:
echo 1 > /proc/sys/net/ipv4/ip_forward
}
reset_all() {
:
reset_iptables_v4
}
block_action() {
reset_all
}
stop_action() {
reset_all
$IPTABLES -P OUTPUT ACCEPT
$IPTABLES -P INPUT ACCEPT
$IPTABLES -P FORWARD ACCEPT
}
check_iptables() {
IP_TABLES="$1"
[ ! -e $IP_TABLES ] && return 151
NF_TABLES=$(cat $IP_TABLES 2>/dev/null)
[ -z "$NF_TABLES" ] && return 152
return 0
}
status_action() {
check_iptables "/proc/net/ip_tables_names"
ret_ipv4=$?
check_iptables "/proc/net/ip6_tables_names"
ret_ipv6=$?
[ $ret_ipv4 -eq 0 -o $ret_ipv6 -eq 0 ] && return 0
[ $ret_ipv4 -eq 151 -o $ret_ipv6 -eq 151 ] && {
echo "iptables modules are not loaded"
}
[ $ret_ipv4 -eq 152 -o $ret_ipv6 -eq 152 ] && {
echo "Firewall is not configured"
}
exit 3
}
# See how we were called.
# For backwards compatibility missing argument is equivalent to 'start'
cmd=$1
test -z "$cmd" && {
cmd="start"
}
case "$cmd" in
start)
log "Activating firewall script generated Sun Apr 10 17:53:53 2011 by vadim"
check_tools
prolog_commands
check_run_time_address_table_files
load_modules " "
configure_interfaces
verify_interfaces
reset_all
script_body
ip_forward
epilog_commands
RETVAL=$?
;;
stop)
stop_action
RETVAL=$?
;;
status)
status_action
RETVAL=$?
;;
block)
block_action
RETVAL=$?
;;
reload)
$0 stop
$0 start
RETVAL=$?
;;
interfaces)
configure_interfaces
RETVAL=$?
;;
test_interfaces)
FWBDEBUG="echo"
configure_interfaces
RETVAL=$?
;;
*)
echo "Usage $0 [start|stop|status|block|reload|interfaces|test_interfaces]"
;;
esac
exit $RETVAL
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