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fwbuilder/test/ipt/firewall-ipv6-ipt-reset-prolog-after-flush.fw.orig
Vadim Kurland c5ca42940f fixes SF bug 3489096, Shell code that restores old static routing 
table entries in case of an error with commands adding new routing
entries was broken and left the machine with no routes at all.

Also, using mktemp to create temporary directory. If mktemp is not
available, fall back onto less secure but guaranteed to work method
where I generate randomized the name of the temporary directory using
process ID.
2012-02-20 14:18:10 -08:00

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#!/bin/sh
#
# This is automatically generated file. DO NOT MODIFY !
#
# Firewall Builder fwb_ipt v5.0.2.3595
#
# Generated Mon Feb 20 14:12:24 2012 PST by vadim
#
# files: * firewall-ipv6-ipt-reset-prolog-after-flush.fw /etc/firewall-ipv6-ipt-reset-prolog-after-flush.fw
#
# Compiled for iptables (any version)
#
# Policy is configured as dual address family. Usigng iptables-restore. Prolog is after iptables reset and flush
# Prolog place "after policy reset" can not be used when policy is activated with iptables-restore
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 "$1"
which "$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\""
}
getnet_internal() {
dev=$1
name=$2
af=$3
L=$($IP route list proto kernel | grep $dev | grep -v default | sed 's! .*$!!')
test -z "$L" && {
eval "$name=''"
return
}
eval "${name}_list=\"$L\""
}
getaddr() {
getaddr_internal $1 $2 "-4"
}
getaddr6() {
getaddr_internal $1 $2 "-6"
}
getnet() {
getnet_internal $1 $2 "-4"
}
getnet6() {
getnet_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
which $PGM >/dev/null 2>&1 || {
echo "\"$PGM\" not found"
exit 1
}
}
check_tools() {
find_program which
find_program $IPTABLES
find_program $IPTABLES_RESTORE
find_program $IP6TABLES_RESTORE
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"
for i in eth0 eth1 ; do
$IP link show "$i" > /dev/null 2>&1 || {
log "Interface $i does not exist"
exit 1
}
done
}
prolog_commands() {
echo "Running prolog script"
echo "This is prolog"
}
epilog_commands() {
echo "Running epilog script"
}
run_epilog_and_exit() {
epilog_commands
exit $1
}
configure_interfaces() {
:
# Configure interfaces
# See http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=429689
# this ensures that secondary ip address is "promoted" to primary
# when primary address is deleted, instead of deleting both
# primary and secondary addresses. It looks like this is only
# available starting from Linux 2.6.16
test -f /proc/sys/net/ipv4/conf/all/promote_secondaries && \
echo 1 > /proc/sys/net/ipv4/conf/all/promote_secondaries
update_addresses_of_interface "eth0 fe80::21d:9ff:fe8b:8e94/64 1.1.1.1/24" ""
update_addresses_of_interface "eth1 22.22.22.22/24" ""
}
script_body() {
# ================ IPv4
(
echo '*filter'
# ================ Table 'filter', automatic rules
echo :INPUT DROP [0:0]
echo :FORWARD DROP [0:0]
echo :OUTPUT DROP [0:0]
# accept established sessions
echo "-A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT "
echo "-A OUTPUT -m state --state ESTABLISHED,RELATED -j ACCEPT "
echo "-A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT "
# drop packets that do not match any valid state and log them
echo ":drop_invalid - [0:0]"
echo "-A OUTPUT -m state --state INVALID -j drop_invalid "
echo "-A INPUT -m state --state INVALID -j drop_invalid "
echo "-A FORWARD -m state --state INVALID -j drop_invalid "
echo "-A drop_invalid -j ULOG --ulog-nlgroup 1 --ulog-qthreshold 1 --ulog-prefix \"INVALID state -- DENY \""
echo "-A drop_invalid -j DROP "
# ================ Table 'filter', rule set Policy
#
# Rule 0 (global)
echo "-A INPUT -m state --state NEW -j ACCEPT "
echo "-A FORWARD -i + -m state --state NEW -j ACCEPT "
#
echo COMMIT
echo '*nat'
# ================ Table 'nat', rule set NAT
echo :PREROUTING ACCEPT [0:0]
echo :POSTROUTING ACCEPT [0:0]
echo :OUTPUT ACCEPT [0:0]
#
# Rule 0 (NAT)
echo "-A POSTROUTING -o eth1 -s 1.1.1.0/24 -j SNAT --to-source 22.22.22.22 "
#
echo COMMIT
) | $IPTABLES_RESTORE; IPTABLES_RESTORE_RES=$?
test $IPTABLES_RESTORE_RES != 0 && run_epilog_and_exit $IPTABLES_RESTORE_RES
# ================ IPv6
(
echo '*filter'
# ================ Table 'filter', automatic rules
echo :INPUT DROP [0:0]
echo :FORWARD DROP [0:0]
echo :OUTPUT DROP [0:0]
# accept established sessions
echo "-A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT "
echo "-A OUTPUT -m state --state ESTABLISHED,RELATED -j ACCEPT "
echo "-A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT "
# drop packets that do not match any valid state and log them
echo ":drop_invalid - [0:0]"
echo "-A OUTPUT -m state --state INVALID -j drop_invalid "
echo "-A INPUT -m state --state INVALID -j drop_invalid "
echo "-A FORWARD -m state --state INVALID -j drop_invalid "
echo "-A drop_invalid -j LOG --log-level debug --log-prefix \"INVALID state -- DENY \""
echo "-A drop_invalid -j DROP "
# ================ Table 'filter', rule set Policy
#
# Rule 0 (global)
echo "-A INPUT -m state --state NEW -j ACCEPT "
echo "-A FORWARD -i + -m state --state NEW -j ACCEPT "
#
echo COMMIT
) | $IP6TABLES_RESTORE; IPTABLES_RESTORE_RES=$?
test $IPTABLES_RESTORE_RES != 0 && run_epilog_and_exit $IPTABLES_RESTORE_RES
}
ip_forward() {
:
echo 1 > /proc/sys/net/ipv4/ip_forward
echo 1 > /proc/sys/net/ipv6/conf/all/forwarding
}
reset_all() {
:
reset_iptables_v4
reset_iptables_v6
}
block_action() {
reset_all
}
stop_action() {
reset_all
$IPTABLES -P OUTPUT ACCEPT
$IPTABLES -P INPUT ACCEPT
$IPTABLES -P FORWARD ACCEPT
$IP6TABLES -P OUTPUT ACCEPT
$IP6TABLES -P INPUT ACCEPT
$IP6TABLES -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 "$cmd" in
start)
log "Activating firewall script generated Mon Feb 20 14:12:24 2012 by vadim"
check_tools
prolog_commands
check_run_time_address_table_files
load_modules "nat ipv6"
configure_interfaces
verify_interfaces
script_body
ip_forward
epilog_commands
RETVAL=$?
;;
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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