shorewall_code/Shorewall-perl/prog.functions
2007-08-09 15:16:08 +00:00

154 lines
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#
# Clear Proxy Arp
#
delete_proxyarp() {
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
done < ${VARDIR}/proxyarp
for f in /proc/sys/net/ipv4/conf/*; do
[ -f $f/proxy_arp ] && echo 0 > $f/proxy_arp
done
fi
rm -f ${VARDIR}/proxyarp
}
#
# Remove all Shorewall-added rules
#
clear_firewall() {
stop_firewall
setpolicy INPUT ACCEPT
setpolicy FORWARD ACCEPT
setpolicy OUTPUT ACCEPT
run_iptables -F
echo 1 > /proc/sys/net/ipv4/ip_forward
if [ -n "$DISABLE_IPV6" ]; then
if qt mywhich ip6tables; then
ip6tables -P INPUT ACCEPT 2> /dev/null
ip6tables -P OUTPUT ACCEPT 2> /dev/null
ip6tables -P FORWARD ACCEPT 2> /dev/null
fi
fi
run_clear_exit
set_state "Cleared"
logger -p kern.info "$PRODUCT Cleared"
}
#
# Issue a message and stop/restore the firewall
#
fatal_error()
{
echo " ERROR: $@" >&2
stop_firewall
[ -n "$TEMPFILE" ] && rm -f $TEMPFILE
exit 2
}
#
# Issue a message and stop
#
startup_error() # $* = Error Message
{
echo " ERROR: $@" >&2
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
kill $$
exit 2
}
#
# Run iptables and if an error occurs, stop/restore the firewall
#
run_iptables()
{
if [ -n "$COMMENT" ]; then
$IPTABLES $@ -m comment --comment "$COMMENT"
else
$IPTABLES $@
fi
if [ $? -ne 0 ]; then
error_message "ERROR: Command \"$IPTABLES $@\" Failed"
stop_firewall
exit 2
fi
}
#
# Run iptables and if an error occurs, stop/restore the firewall
#
run_ip()
{
if ! ip $@; then
error_message "ERROR: Command \"ip $@\" Failed"
stop_firewall
exit 2
fi
}
#
# Run tc and if an error occurs, stop/restore the firewall
#
run_tc() {
if ! tc $@ ; then
error_message "ERROR: Command \"tc $@\" Failed"
stop_firewall
exit 2
fi
}
restore_dynamic_rules() {
if [ -f ${VARDIR}/save ]; then
progress_message2 "Setting up dynamic rules..."
rangematch='source IP range'
while read target ignore1 ignore2 address ignore3 rest; do
case $target in
DROP|reject|logdrop|logreject)
case $rest in
$rangematch*)
run_iptables -A dynamic -m iprange --src-range ${rest#source IP range} -j $target
;;
*)
if [ -z "$rest" ]; then
run_iptables -A dynamic -s $address -j $target
else
error_message "WARNING: Unable to restore dynamic rule \"$target $ignore1 $ignore2 $address $ignore3 $rest\""
fi
;;
esac
;;
esac
done < ${VARDIR}/save
fi
}
#
# Get a list of all configured broadcast addresses on the system
#
get_all_bcasts()
{
ip -f inet addr show 2> /dev/null | grep 'inet.*brd' | sed 's/inet.*brd //; s/scope.*//;' | sort -u
}