Move 'compile_stop_firewall' to Shorewall::Rules

Signed-off-by: Tom Eastep <teastep@shorewall.net>

git-svn-id: https://shorewall.svn.sourceforge.net/svnroot/shorewall/trunk@9743 fbd18981-670d-0410-9b5c-8dc0c1a9a2bb
This commit is contained in:
teastep 2009-03-28 19:22:15 +00:00
parent d9622dabfe
commit adb9830e9e
2 changed files with 347 additions and 1 deletions

View File

@ -154,7 +154,6 @@ our %EXPORT_TAGS = (
get_interface_mac get_interface_mac
have_global_variables have_global_variables
set_global_variables set_global_variables
compile_stop_firewall
create_netfilter_load create_netfilter_load
create_chainlist_reload create_chainlist_reload
$section $section

View File

@ -44,6 +44,7 @@ our @EXPORT = qw( process_tos
process_rules process_rules
generate_matrix generate_matrix
setup_mss setup_mss
compile_stop_firewall
); );
our @EXPORT_OK = qw( process_rule process_rule1 initialize ); our @EXPORT_OK = qw( process_rule process_rule1 initialize );
our $VERSION = '4.3_7'; our $VERSION = '4.3_7';
@ -2113,4 +2114,350 @@ sub setup_mss( ) {
add_rule $chainref , "-p tcp --tcp-flags SYN,RST SYN ${match}-j TCPMSS $option" if $clampmss; add_rule $chainref , "-p tcp --tcp-flags SYN,RST SYN ${match}-j TCPMSS $option" if $clampmss;
} }
#
# Compile the stop_firewall() function
#
sub compile_stop_firewall() {
emit <<'EOF';
#
# Stop/restore the firewall after an error or because of a 'stop' or 'clear' command
#
stop_firewall() {
EOF
if ( $family == F_IPV4 ) {
emit( ' deletechain() {',
' qt $IPTABLES -L $1 -n && qt $IPTABLES -F $1 && qt $IPTABLES -X $1' );
} else {
emit( ' deletechain() {',
' qt $IP6TABLES -L $1 -n && qt $IP6TABLES -F $1 && qt $IP6TABLES -X $1' );
}
emit <<'EOF';
}
deleteallchains() {
do_iptables -F
do_iptables -X
}
delete_nat() {
do_iptables -t nat -F
do_iptables -t nat -X
if [ -f ${VARDIR}/nat ]; then
while read external interface; do
del_ip_addr $external $interface
done < ${VARDIR}/nat
rm -f ${VARDIR}/nat
fi
}
case $COMMAND in
stop|clear|restore)
;;
*)
set +x
case $COMMAND in
start)
logger -p kern.err "ERROR:$PRODUCT start failed"
;;
restart)
logger -p kern.err "ERROR:$PRODUCT restart failed"
;;
restore)
logger -p kern.err "ERROR:$PRODUCT restore failed"
;;
esac
if [ "$RESTOREFILE" = NONE ]; then
COMMAND=clear
clear_firewall
echo "$PRODUCT Cleared"
kill $$
exit 2
else
RESTOREPATH=${VARDIR}/$RESTOREFILE
if [ -x $RESTOREPATH ]; then
echo Restoring ${PRODUCT:=Shorewall}...
if $RESTOREPATH restore; then
echo "$PRODUCT restored from $RESTOREPATH"
set_state "Started"
else
set_state "Unknown"
fi
kill $$
exit 2
fi
fi
;;
esac
set_state "Stopping"
STOPPING="Yes"
TERMINATOR=
deletechain shorewall
run_stop_exit
EOF
if ( $capabilities{MANGLE_ENABLED} && $config{MANGLE_ENABLED} ) {
emit <<'EOF';
run_iptables -t mangle -F
run_iptables -t mangle -X
for chain in PREROUTING INPUT FORWARD POSTROUTING; do
qt1 $IPTABLES -t mangle -P $chain ACCEPT
done
EOF
}
if ( $capabilities{RAW_TABLE} ) {
if ( $family == F_IPV4 ) {
emit <<'EOF';
run_iptables -t raw -F
run_iptables -t raw -X
for chain in PREROUTING OUTPUT; do
qt1 $IPTABLES -t raw -P $chain ACCEPT
done
EOF
} else {
emit <<'EOF';
run_iptables -t raw -F
run_iptables -t raw -X
for chain in PREROUTING OUTPUT; do
qt1 $IP6TABLES -t raw -P $chain ACCEPT
done
EOF
}
}
if ( $capabilities{NAT_ENABLED} ) {
emit <<'EOF';
delete_nat
for chain in PREROUTING POSTROUTING OUTPUT; do
qt1 $IPTABLES -t nat -P $chain ACCEPT
done
EOF
}
if ( $family == F_IPV4 ) {
emit <<'EOF';
if [ -f ${VARDIR}/proxyarp ]; then
while read address interface external haveroute; do
qt arp -i $external -d $address pub
[ -z "${haveroute}${NOROUTES}" ] && qt ip route del $address dev $interface
f=/proc/sys/net/ipv4/conf/$interface/proxy_arp
[ -f $f ] && echo 0 > $f
done < ${VARDIR}/proxyarp
fi
rm -f ${VARDIR}/proxyarp
EOF
}
push_indent;
emit 'delete_tc1' if $config{CLEAR_TC};
emit( 'undo_routing',
'restore_default_route'
);
my $criticalhosts = process_criticalhosts;
if ( @$criticalhosts ) {
if ( $config{ADMINISABSENTMINDED} ) {
emit ( 'for chain in INPUT OUTPUT; do',
' setpolicy $chain ACCEPT',
'done',
'',
'setpolicy FORWARD DROP',
'',
'deleteallchains',
''
);
for my $hosts ( @$criticalhosts ) {
my ( $interface, $host, $seq ) = ( split /\|/, $hosts );
my $source = match_source_net $host;
my $dest = match_dest_net $host;
emit( "do_iptables -A INPUT -i $interface $source -j ACCEPT",
"do_iptables -A OUTPUT -o $interface $dest -j ACCEPT"
);
}
emit( '',
'for chain in INPUT OUTPUT; do',
' setpolicy $chain DROP',
"done\n"
);
} else {
emit( '',
'for chain in INPUT OUTPUT; do',
' setpolicy $chain ACCEPT',
'done',
'',
'setpolicy FORWARD DROP',
'',
"deleteallchains\n"
);
for my $hosts ( @$criticalhosts ) {
my ( $interface, $host , $seq ) = ( split /|/, $hosts );
my $source = match_source_net $host;
my $dest = match_dest_net $host;
emit( "do_iptables -A INPUT -i $interface $source -j ACCEPT",
"do_iptables -A OUTPUT -o $interface $dest -j ACCEPT"
);
}
emit( "\nsetpolicy INPUT DROP",
'',
'for chain in INPUT FORWARD; do',
' setcontinue $chain',
"done\n"
);
}
} elsif ( $config{ADMINISABSENTMINDED} ) {
emit( 'for chain in INPUT FORWARD; do',
' setpolicy $chain DROP',
'done',
'',
'setpolicy OUTPUT ACCEPT',
'',
'deleteallchains',
'',
'for chain in INPUT FORWARD; do',
' setcontinue $chain',
"done\n",
);
} else {
emit( 'for chain in INPUT OUTPUT FORWARD; do',
' setpolicy $chain DROP',
'done',
'',
"deleteallchains\n"
);
}
if ( $family == F_IPV6 ) {
emit <<'EOF';
#
# Enable link local and multi-cast
#
run_iptables -A INPUT -s ff80::/10 -j ACCEPT
run_iptables -A INPUT -d ff80::/10 -j ACCEPT
run_iptables -A INPUT -d ff00::/10 -j ACCEPT
EOF
emit <<'EOF' unless $config{ADMINISABSENTMINDED};
run_iptables -A OUTPUT -d ff80::/10 -j ACCEPT
run_iptables -A OUTPUT -d ff00::/10 -j ACCEPT
EOF
}
process_routestopped;
emit( 'do_iptables -A INPUT -i lo -j ACCEPT',
'do_iptables -A OUTPUT -o lo -j ACCEPT'
);
emit 'do_iptables -A OUTPUT -o lo -j ACCEPT' unless $config{ADMINISABSENTMINDED};
my $interfaces = find_interfaces_by_option 'dhcp';
if ( @$interfaces ) {
my $ports = $family == F_IPV4 ? '67:68' : '546:547';
for my $interface ( @$interfaces ) {
emit "do_iptables -A INPUT -p udp -i $interface --dport $ports -j ACCEPT";
emit "do_iptables -A OUTPUT -p udp -o $interface --dport $ports -j ACCEPT" unless $config{ADMINISABSENTMINDED};
#
# This might be a bridge
#
emit "do_iptables -A FORWARD -p udp -i $interface -o $interface --dport $ports -j ACCEPT";
}
}
emit '';
if ( $family == F_IPV4 ) {
if ( $config{IP_FORWARDING} eq 'on' ) {
emit( 'echo 1 > /proc/sys/net/ipv4/ip_forward',
'progress_message2 IPv4 Forwarding Enabled' );
} elsif ( $config{IP_FORWARDING} eq 'off' ) {
emit( 'echo 0 > /proc/sys/net/ipv4/ip_forward',
'progress_message2 IPv4 Forwarding Disabled!'
);
}
} else {
for my $interface ( all_bridges ) {
emit "do_iptables -A FORWARD -p 58 -i $interface -o $interface -j ACCEPT";
}
if ( $config{IP_FORWARDING} eq 'on' ) {
emit( 'echo 1 > /proc/sys/net/ipv6/conf/all/forwarding',
'progress_message2 IPv6 Forwarding Enabled' );
} elsif ( $config{IP_FORWARDING} eq 'off' ) {
emit( 'echo 0 > /proc/sys/net/ipv6/conf/all/forwarding',
'progress_message2 IPv6 Forwarding Disabled!'
);
}
}
pop_indent;
emit '
run_stopped_exit';
my @ipsets = all_ipsets;
if ( @ipsets ) {
emit <<'EOF'
if [ -n "$(mywhich ipset)" ]; then
if ipset -S > ${VARDIR}/ipsets.tmp; then
#
# Don't save an 'empty' file
#
grep -q '^-N' ${VARDIR}/ipsets.tmp && mv -f ${VARDIR}/ipsets.tmp ${VARDIR}/ipsets.save
fi
fi
EOF
}
emit '
set_state "Stopped"
logger -p kern.info "$PRODUCT Stopped"
case $COMMAND in
stop|clear)
;;
*)
#
# The firewall is being stopped when we were trying to do something
# else. Kill the shell in case we\'re running in a subshell
#
kill $$
;;
esac
}
';
}
1; 1;