mirror of
https://github.com/fwbuilder/fwbuilder
synced 2026-05-01 22:57:33 +02:00
c5ca42940f
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.
541 lines
14 KiB
Bash
Executable File
541 lines
14 KiB
Bash
Executable File
#!/bin/sh
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#
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# This is automatically generated file. DO NOT MODIFY !
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#
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# Firewall Builder fwb_ipt v5.0.2.3595
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#
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# Generated Mon Feb 20 14:11:11 2012 PST by vadim
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#
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# files: * firewall41.fw /etc/firewall41.fw
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#
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# Compiled for iptables (any version)
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#
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# testing rule shadowing with run-time objects, rules with such objects should be ignored
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# firewall41:Policy:5: error: File not found for Address Table: missing table (this_table_does_not_exist.tbl) Using dummy address in test mode
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# firewall41:Policy:5: error: File not found for Address Table: missing table (this_table_does_not_exist.tbl) Using dummy address in test mode
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# firewall41:Policy:6: error: DNSName object "does not resolve" (compile time) can not resolve dns name "does_not_resolve.local" (AF_INET): Host or network 'does_not_resolve.local' not found; last error: Unknown error Using dummy address in test mode
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# firewall41:Policy:5: error: Rule '5 (global)' shadows rule '6 (global)' below it
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# firewall41:Policy:6: error: DNSName object "does not resolve" (compile time) can not resolve dns name "does_not_resolve.local" (AF_INET): Host or network 'does_not_resolve.local' not found; last error: Unknown error Using dummy address in test mode
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# firewall41:Policy:5: error: Rule '5 (global)' shadows rule '6 (global)' below it
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# firewall41:Policy:5: error: File not found for Address Table: missing table (this_table_does_not_exist.tbl) Using dummy address in test mode
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# firewall41:Policy:6: error: DNSName object "does not resolve" (compile time) can not resolve dns name "does_not_resolve.local" (AF_INET): Host or network 'does_not_resolve.local' not found; last error: Unknown error Using dummy address in test mode
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FWBDEBUG=""
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PATH="/sbin:/usr/sbin:/bin:/usr/bin:${PATH}"
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export PATH
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LSMOD="/sbin/lsmod"
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MODPROBE="/sbin/modprobe"
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IPTABLES="/sbin/iptables"
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IP6TABLES="/sbin/ip6tables"
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IPTABLES_RESTORE="/sbin/iptables-restore"
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IP6TABLES_RESTORE="/sbin/ip6tables-restore"
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IP="/sbin/ip"
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IFCONFIG="/sbin/ifconfig"
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VCONFIG="/sbin/vconfig"
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BRCTL="/sbin/brctl"
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IFENSLAVE="/sbin/ifenslave"
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IPSET="/usr/sbin/ipset"
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LOGGER="/usr/bin/logger"
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log() {
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echo "$1"
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which "$LOGGER" >/dev/null 2>&1 && $LOGGER -p info "$1"
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}
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getInterfaceVarName() {
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echo $1 | sed 's/\./_/'
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}
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getaddr_internal() {
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dev=$1
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name=$2
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af=$3
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L=$($IP $af addr show dev $dev | sed -n '/inet/{s!.*inet6* !!;s!/.*!!p}' | sed 's/peer.*//')
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test -z "$L" && {
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eval "$name=''"
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return
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}
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eval "${name}_list=\"$L\""
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}
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getnet_internal() {
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dev=$1
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name=$2
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af=$3
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L=$($IP route list proto kernel | grep $dev | grep -v default | sed 's! .*$!!')
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test -z "$L" && {
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eval "$name=''"
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return
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}
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eval "${name}_list=\"$L\""
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}
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getaddr() {
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getaddr_internal $1 $2 "-4"
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}
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getaddr6() {
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getaddr_internal $1 $2 "-6"
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}
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getnet() {
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getnet_internal $1 $2 "-4"
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}
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getnet6() {
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getnet_internal $1 $2 "-6"
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}
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# function getinterfaces is used to process wildcard interfaces
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getinterfaces() {
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NAME=$1
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$IP link show | grep ": $NAME" | while read L; do
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OIFS=$IFS
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IFS=" :"
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set $L
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IFS=$OIFS
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echo $2
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done
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}
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diff_intf() {
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func=$1
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list1=$2
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list2=$3
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cmd=$4
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for intf in $list1
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do
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echo $list2 | grep -q $intf || {
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# $vlan is absent in list 2
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$func $intf $cmd
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}
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done
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}
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find_program() {
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PGM=$1
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which $PGM >/dev/null 2>&1 || {
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echo "\"$PGM\" not found"
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exit 1
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}
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}
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check_tools() {
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find_program which
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find_program $IPTABLES
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find_program $MODPROBE
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find_program $IP
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}
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reset_iptables_v4() {
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$IPTABLES -P OUTPUT DROP
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$IPTABLES -P INPUT DROP
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$IPTABLES -P FORWARD DROP
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cat /proc/net/ip_tables_names | while read table; do
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$IPTABLES -t $table -L -n | while read c chain rest; do
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if test "X$c" = "XChain" ; then
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$IPTABLES -t $table -F $chain
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fi
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done
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$IPTABLES -t $table -X
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done
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}
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reset_iptables_v6() {
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$IP6TABLES -P OUTPUT DROP
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$IP6TABLES -P INPUT DROP
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$IP6TABLES -P FORWARD DROP
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cat /proc/net/ip6_tables_names | while read table; do
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$IP6TABLES -t $table -L -n | while read c chain rest; do
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if test "X$c" = "XChain" ; then
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$IP6TABLES -t $table -F $chain
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fi
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done
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$IP6TABLES -t $table -X
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done
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}
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P2P_INTERFACE_WARNING=""
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missing_address() {
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address=$1
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cmd=$2
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oldIFS=$IFS
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IFS="@"
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set $address
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addr=$1
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interface=$2
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IFS=$oldIFS
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$IP addr show dev $interface | grep -q POINTOPOINT && {
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test -z "$P2P_INTERFACE_WARNING" && echo "Warning: Can not update address of interface $interface. fwbuilder can not manage addresses of point-to-point interfaces yet"
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P2P_INTERFACE_WARNING="yes"
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return
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}
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test "$cmd" = "add" && {
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echo "# Adding ip address: $interface $addr"
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echo $addr | grep -q ':' && {
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$FWBDEBUG $IP addr $cmd $addr dev $interface
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} || {
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$FWBDEBUG $IP addr $cmd $addr broadcast + dev $interface
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}
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}
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test "$cmd" = "del" && {
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echo "# Removing ip address: $interface $addr"
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$FWBDEBUG $IP addr $cmd $addr dev $interface || exit 1
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}
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$FWBDEBUG $IP link set $interface up
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}
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list_addresses_by_scope() {
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interface=$1
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scope=$2
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ignore_list=$3
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$IP addr ls dev $interface | \
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awk -v IGNORED="$ignore_list" -v SCOPE="$scope" \
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'BEGIN {
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split(IGNORED,ignored_arr);
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for (a in ignored_arr) {ignored_dict[ignored_arr[a]]=1;}
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}
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(/inet |inet6 / && $0 ~ SCOPE && !($2 in ignored_dict)) {print $2;}' | \
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while read addr; do
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echo "${addr}@$interface"
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done | sort
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}
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update_addresses_of_interface() {
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ignore_list=$2
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set $1
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interface=$1
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shift
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FWB_ADDRS=$(
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for addr in $*; do
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echo "${addr}@$interface"
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done | sort
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)
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CURRENT_ADDRS_ALL_SCOPES=""
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CURRENT_ADDRS_GLOBAL_SCOPE=""
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$IP link show dev $interface >/dev/null 2>&1 && {
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CURRENT_ADDRS_ALL_SCOPES=$(list_addresses_by_scope $interface 'scope .*' "$ignore_list")
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CURRENT_ADDRS_GLOBAL_SCOPE=$(list_addresses_by_scope $interface 'scope global' "$ignore_list")
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} || {
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echo "# Interface $interface does not exist"
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# Stop the script if we are not in test mode
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test -z "$FWBDEBUG" && exit 1
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}
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diff_intf missing_address "$FWB_ADDRS" "$CURRENT_ADDRS_ALL_SCOPES" add
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diff_intf missing_address "$CURRENT_ADDRS_GLOBAL_SCOPE" "$FWB_ADDRS" del
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}
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clear_addresses_except_known_interfaces() {
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$IP link show | sed 's/://g' | awk -v IGNORED="$*" \
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'BEGIN {
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split(IGNORED,ignored_arr);
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for (a in ignored_arr) {ignored_dict[ignored_arr[a]]=1;}
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}
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(/state/ && !($2 in ignored_dict)) {print $2;}' | \
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while read intf; do
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echo "# Removing addresses not configured in fwbuilder from interface $intf"
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$FWBDEBUG $IP addr flush dev $intf scope global
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$FWBDEBUG $IP link set $intf down
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done
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}
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check_file() {
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test -r "$2" || {
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echo "Can not find file $2 referenced by address table object $1"
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exit 1
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}
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}
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check_run_time_address_table_files() {
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:
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check_file "atbl.1" "addr-table-1.tbl"
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check_file "block_these" "block-hosts.tbl"
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}
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load_modules() {
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:
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OPTS=$1
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MODULES_DIR="/lib/modules/`uname -r`/kernel/net/"
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MODULES=$(find $MODULES_DIR -name '*conntrack*' \! -name '*ipv6*'|sed -e 's/^.*\///' -e 's/\([^\.]\)\..*/\1/')
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echo $OPTS | grep -q nat && {
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MODULES="$MODULES $(find $MODULES_DIR -name '*nat*'|sed -e 's/^.*\///' -e 's/\([^\.]\)\..*/\1/')"
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}
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echo $OPTS | grep -q ipv6 && {
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MODULES="$MODULES $(find $MODULES_DIR -name nf_conntrack_ipv6|sed -e 's/^.*\///' -e 's/\([^\.]\)\..*/\1/')"
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}
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for module in $MODULES; do
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if $LSMOD | grep ${module} >/dev/null; then continue; fi
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$MODPROBE ${module} || exit 1
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done
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}
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verify_interfaces() {
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:
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echo "Verifying interfaces: eth0 eth1"
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for i in eth0 eth1 ; do
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$IP link show "$i" > /dev/null 2>&1 || {
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log "Interface $i does not exist"
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exit 1
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}
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done
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}
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prolog_commands() {
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echo "Running prolog script"
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}
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epilog_commands() {
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echo "Running epilog script"
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}
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run_epilog_and_exit() {
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epilog_commands
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exit $1
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}
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configure_interfaces() {
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:
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# Configure interfaces
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update_addresses_of_interface "eth0 1.1.1.1/24" ""
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update_addresses_of_interface "eth1 2.2.2.2/24" ""
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}
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script_body() {
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# ================ IPv4
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# ================ Table 'filter', automatic rules
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# accept established sessions
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$IPTABLES -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
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$IPTABLES -A OUTPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
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$IPTABLES -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT
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# ================ Table 'filter', rule set Policy
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#
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# Rule 0 (global)
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#
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echo "Rule 0 (global)"
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#
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$IPTABLES -N RULE_0
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$IPTABLES -A OUTPUT -d www.heise.de -m state --state NEW -j RULE_0
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$IPTABLES -A RULE_0 -j LOG --log-level info --log-prefix "RULE 0 -- ACCEPT "
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$IPTABLES -A RULE_0 -j ACCEPT
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#
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# Rule 1 (global)
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#
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echo "Rule 1 (global)"
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#
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$IPTABLES -N RULE_1
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grep -Ev '^#|^;|^\s*$' addr-table-1.tbl | while read L ; do
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set $L; at_atbl_1=$1; $IPTABLES -A OUTPUT -d $at_atbl_1 -m state --state NEW -j RULE_1
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done
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$IPTABLES -A RULE_1 -j LOG --log-level info --log-prefix "RULE 1 -- ACCEPT "
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$IPTABLES -A RULE_1 -j ACCEPT
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#
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# Rule 2 (global)
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#
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echo "Rule 2 (global)"
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#
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$IPTABLES -N Cid44F707E428576.0
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$IPTABLES -A INPUT -d 1.1.1.1 -m state --state NEW -j Cid44F707E428576.0
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$IPTABLES -N RULE_2
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$IPTABLES -A Cid44F707E428576.0 -s 1.1.1.1 -j RULE_2
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$IPTABLES -A Cid44F707E428576.0 -s 2.2.2.2 -j RULE_2
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$IPTABLES -A OUTPUT -d 1.1.1.1 -m state --state NEW -j RULE_2
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$IPTABLES -A RULE_2 -j LOG --log-level info --log-prefix "RULE 2 -- ACCEPT "
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$IPTABLES -A RULE_2 -j ACCEPT
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#
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# Rule 3 (global)
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#
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echo "Rule 3 (global)"
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#
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$IPTABLES -N RULE_3
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grep -Ev '^#|^;|^\s*$' addr-table-1.tbl | while read L ; do
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set $L; at_atbl_1=$1; $IPTABLES -A OUTPUT -d $at_atbl_1 -j RULE_3
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done
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grep -Ev '^#|^;|^\s*$' addr-table-1.tbl | while read L ; do
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set $L; at_atbl_1=$1; $IPTABLES -A FORWARD -d $at_atbl_1 -j RULE_3
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done
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$IPTABLES -A RULE_3 -j LOG --log-level info --log-prefix "RULE 3 -- DENY "
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$IPTABLES -A RULE_3 -j DROP
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#
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# Rule 4 (global)
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#
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echo "Rule 4 (global)"
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#
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# testing for bug #1086
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# when two run-time objects are used in the rule, compiler adds blank command that blocks (permits) any to any
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$IPTABLES -N RULE_4
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grep -Ev '^#|^;|^\s*$' addr-table-1.tbl | while read L ; do
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set $L; at_atbl_1=$1; $IPTABLES -A OUTPUT -d $at_atbl_1 -m state --state NEW -j RULE_4
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done
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grep -Ev '^#|^;|^\s*$' block-hosts.tbl | while read L ; do
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set $L; at_block_these=$1; $IPTABLES -A OUTPUT -d $at_block_these -m state --state NEW -j RULE_4
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done
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$IPTABLES -A RULE_4 -j LOG --log-level info --log-prefix "RULE 4 -- ACCEPT "
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$IPTABLES -A RULE_4 -j ACCEPT
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#
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# Rule 5 (global)
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#
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echo "Rule 5 (global)"
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#
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# there should be warning saying the table could not be found
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# firewall41:Policy:5: error: File not found for Address Table: missing table (this_table_does_not_exist.tbl) Using dummy address in test mode
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# firewall41:Policy:5: error: Rule '5 (global)' shadows rule '6 (global)' below it
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$IPTABLES -N RULE_5
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$IPTABLES -A OUTPUT -d 192.0.2.0/24 -j RULE_5
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$IPTABLES -A RULE_5 -j LOG --log-level info --log-prefix "RULE 5 -- DENY "
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$IPTABLES -A RULE_5 -j DROP
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#
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# Rule 6 (global)
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#
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echo "Rule 6 (global)"
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#
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# firewall41:Policy:6: error: DNSName object "does not resolve" (compile time) can not resolve dns name "does_not_resolve.local" (AF_INET): Host or network 'does_not_resolve.local' not found; last error: Unknown error Using dummy address in test mode
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$IPTABLES -N RULE_6
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$IPTABLES -A OUTPUT -d 192.0.2.1 -j RULE_6
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$IPTABLES -A RULE_6 -j LOG --log-level info --log-prefix "RULE 6 -- DENY "
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$IPTABLES -A RULE_6 -j DROP
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}
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ip_forward() {
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:
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echo 1 > /proc/sys/net/ipv4/ip_forward
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}
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reset_all() {
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:
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reset_iptables_v4
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}
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block_action() {
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reset_all
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}
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stop_action() {
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reset_all
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$IPTABLES -P OUTPUT ACCEPT
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$IPTABLES -P INPUT ACCEPT
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$IPTABLES -P FORWARD ACCEPT
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}
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check_iptables() {
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IP_TABLES="$1"
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[ ! -e $IP_TABLES ] && return 151
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NF_TABLES=$(cat $IP_TABLES 2>/dev/null)
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[ -z "$NF_TABLES" ] && return 152
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return 0
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}
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status_action() {
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check_iptables "/proc/net/ip_tables_names"
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ret_ipv4=$?
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check_iptables "/proc/net/ip6_tables_names"
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ret_ipv6=$?
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[ $ret_ipv4 -eq 0 -o $ret_ipv6 -eq 0 ] && return 0
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[ $ret_ipv4 -eq 151 -o $ret_ipv6 -eq 151 ] && {
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echo "iptables modules are not loaded"
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}
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[ $ret_ipv4 -eq 152 -o $ret_ipv6 -eq 152 ] && {
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echo "Firewall is not configured"
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}
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exit 3
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}
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|
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# See how we were called.
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# For backwards compatibility missing argument is equivalent to 'start'
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cmd=$1
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test -z "$cmd" && {
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cmd="start"
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}
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|
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case "$cmd" in
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start)
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log "Activating firewall script generated Mon Feb 20 14:11:11 2012 by vadim"
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check_tools
|
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prolog_commands
|
|
check_run_time_address_table_files
|
|
|
|
load_modules " "
|
|
configure_interfaces
|
|
verify_interfaces
|
|
|
|
reset_all
|
|
|
|
script_body
|
|
ip_forward
|
|
epilog_commands
|
|
RETVAL=$?
|
|
;;
|
|
|
|
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 |