mirror of
https://gitlab.com/shorewall/code.git
synced 2024-12-11 17:00:51 +01:00
e14349554c
git-svn-id: https://shorewall.svn.sourceforge.net/svnroot/shorewall/trunk@8936 fbd18981-670d-0410-9b5c-8dc0c1a9a2bb
428 lines
11 KiB
Bash
428 lines
11 KiB
Bash
#!/bin/sh
|
|
#
|
|
# Shorewall 4.2 -- /usr/share/shorewall/lib.dynamiczones
|
|
#
|
|
# This program is under GPL [http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt]
|
|
#
|
|
# (c) 1999,2000,2001,2002,2003,2004,2005,2006,2007 - Tom Eastep (teastep@shorewall.net)
|
|
#
|
|
# Complete documentation is available at http://shorewall.net
|
|
#
|
|
# This program is free software; you can redistribute it and/or modify
|
|
# it under the terms of Version 2 of the GNU General Public License
|
|
# as published by the Free Software Foundation.
|
|
#
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with this program; if not, write to the Free Software
|
|
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
#
|
|
# This library is loaded by /usr/share/shorewall/firewall when processing
|
|
# the 'add' and 'delete' commands.
|
|
#
|
|
|
|
#
|
|
# Add a host or networks to a zone
|
|
#
|
|
add_to_zone() # $1...${n-1} = <interface>[:<hosts>] $n = zone
|
|
{
|
|
local interface host zone z h z1 z2 chain
|
|
local dhcp_interfaces blacklist_interfaces maclist_interfaces
|
|
local tcpflags_interfaces newhostlist=
|
|
local rulenum source_chain dest_hosts iface hosts hostlist=
|
|
|
|
nat_chain_exists() # $1 = chain name
|
|
{
|
|
qt $IPTABLES -t nat -L $1 -n
|
|
}
|
|
|
|
do_iptables() # $@ = command
|
|
{
|
|
[ -n "$PHYSDEV_MATCH" ] && [ -f $TMP_DIR/physdev ] && rm -f $TMP_DIR/physdev
|
|
[ -n "$IPRANGE_MATCH" ] && [ -f $TMP_DIR/iprange ] && rm -f $TMP_DIR/iprange
|
|
|
|
if ! $IPTABLES $@ ; then
|
|
error_message "ERROR: Can't add $newhost to zone $zone"
|
|
fi
|
|
}
|
|
|
|
DOING=Processing
|
|
DONE=Processed
|
|
#
|
|
# Load $zones
|
|
#
|
|
determine_zones
|
|
#
|
|
# Validate Interfaces File
|
|
#
|
|
validate_interfaces_file
|
|
#
|
|
# Validate Hosts File
|
|
#
|
|
validate_hosts_file
|
|
#
|
|
# Validate IPSec File
|
|
#
|
|
f=$(find_file $IPSECFILE)
|
|
|
|
[ -f $f ] && setup_ipsec $f
|
|
#
|
|
# Normalize host list
|
|
#
|
|
while [ $# -gt 1 ]; do
|
|
interface=${1%%:*}
|
|
host=${1#*:}
|
|
[ "$host" = "$1" ] && host=
|
|
#
|
|
# Be sure that the interface was dynamic at last [re]start
|
|
#
|
|
if ! chain_exists $(input_chain $interface) ; then
|
|
startup_error "Unknown interface $interface"
|
|
fi
|
|
|
|
if ! chain_exists $(dynamic_in $interface) ; then
|
|
startup_error "At last Shorewall [re]start, DYNAMIC_ZONES=No in shorewall.conf"
|
|
fi
|
|
|
|
if [ -z "$host" ]; then
|
|
hostlist="$hostlist $interface:0.0.0.0/0"
|
|
else
|
|
for h in $(separate_list $host); do
|
|
hostlist="$hostlist $interface:$h"
|
|
done
|
|
fi
|
|
|
|
shift
|
|
done
|
|
#
|
|
# Validate Zone
|
|
#
|
|
zone=$1
|
|
|
|
validate_zone $zone || startup_error "Unknown zone: $zone"
|
|
|
|
[ "$zone" = $FW ] && startup_error "Can't add $1 to firewall zone"
|
|
|
|
#
|
|
# Be sure that Shorewall has been restarted using a DZ-aware version of the code
|
|
#
|
|
[ -f ${VARDIR}/chains ] || startup_error "${VARDIR}/chains -- file not found"
|
|
[ -f ${VARDIR}/zones ] || startup_error "${VARDIR}/zones -- file not found"
|
|
#
|
|
# Check for duplicates and create a new zone state file
|
|
#
|
|
> ${VARDIR}/zones_$$
|
|
|
|
while read z type hosts; do
|
|
if [ "$z" = "$zone" ]; then
|
|
case $type in
|
|
bport4:*)
|
|
rm -f ${VARDIR}/zones_$$
|
|
startup_error "Bridge Port zones may not be dynamically modified"
|
|
;;
|
|
esac
|
|
|
|
case "$hosts" in
|
|
*exclude*)
|
|
rm -f ${VARDIR}/zones_$$
|
|
startup_error "Modifying a zone that has an exclude list is not supported"
|
|
;;
|
|
*)
|
|
for h in $hostlist; do
|
|
if ! list_search +$h $hosts; then
|
|
if ! list_search $h $hosts; then
|
|
newhostlist="$newhostlist +$h"
|
|
else
|
|
error_message "$h is already in zone $zone"
|
|
fi
|
|
else
|
|
error_message "$h is already in zone $zone"
|
|
fi
|
|
done
|
|
|
|
[ -z "$hosts" ] && hosts=$newhostlist || hosts="$hosts $newhostlist"
|
|
;;
|
|
esac
|
|
fi
|
|
|
|
eval ${z}_hosts=\"$hosts\"
|
|
|
|
echo "$z $type $hosts" >> ${VARDIR}/zones_$$
|
|
done < ${VARDIR}/zones
|
|
|
|
mv -f ${VARDIR}/zones_$$ ${VARDIR}/zones
|
|
|
|
TERMINATOR=fatal_error
|
|
#
|
|
# Create a new Zone state file
|
|
#
|
|
for newhost in $newhostlist; do
|
|
newhost=${newhost#+}
|
|
#
|
|
# Isolate interface and host parts
|
|
#
|
|
interface=${newhost%%:*}
|
|
host=${newhost#*:}
|
|
#
|
|
# If the zone passed in the command has a dnat chain then insert a rule in
|
|
# the nat table PREROUTING chain to jump to that chain when the source
|
|
# matches the new host(s)#
|
|
#
|
|
chain=${zone}_dnat
|
|
|
|
if nat_chain_exists $chain; then
|
|
do_iptables -t nat -A $(dynamic_in $interface) $(source_ip_range $host) $(match_ipsec_in $zone $newhost) -j $chain
|
|
fi
|
|
#
|
|
# Insert new rules into the filter table for the passed interface
|
|
#
|
|
while read z1 z2 chain; do
|
|
[ "$z1" = "$z2" ] && op="-I" || op="-A"
|
|
if [ "$z1" = "$zone" ]; then
|
|
if [ "$z2" = "$FW" ]; then
|
|
do_iptables $op $(dynamic_in $interface) $(match_source_hosts $host) $(match_ipsec_in $z1 $newhost) -j $chain
|
|
else
|
|
source_chain=$(dynamic_fwd $interface)
|
|
if is_ipsec_host $z1 $newhost ; then
|
|
do_iptables $op $source_chain $(match_source_hosts $host) $(match_ipsec_in $z1 $newhost) -j ${z1}_frwd
|
|
else
|
|
eval dest_hosts=\"\$${z2}_hosts\"
|
|
|
|
for h in $dest_hosts; do
|
|
[ "$h" = exclude ] && break
|
|
iface=${h%%:*}
|
|
iface=${iface#+}
|
|
hosts=${h#*:}
|
|
|
|
if [ "$iface" != "$interface" -o "$hosts" != "$host" ]; then
|
|
do_iptables $op $source_chain $(match_source_hosts $host) -o $iface $(match_dest_hosts $hosts) $(match_ipsec_out $z2 $h) -j $chain
|
|
fi
|
|
done
|
|
fi
|
|
fi
|
|
elif [ "$z2" = "$zone" ]; then
|
|
if [ "$z1" = "$FW" ]; then
|
|
#
|
|
# Add a rule to the dynamic out chain for the interface
|
|
#
|
|
do_iptables $op $(dynamic_out $interface) $(match_dest_hosts $host) $(match_ipsec_out $z2 $newhost) -j $chain
|
|
else
|
|
eval source_hosts=\"\$${z1}_hosts\"
|
|
|
|
for h in $source_hosts; do
|
|
[ "$h" = exclude ] && break
|
|
iface=${h%%:*}
|
|
iface=${iface#+}
|
|
hosts=${h#*:}
|
|
|
|
if [ "$iface" != "$interface" -o "$hosts" != "$host" ]; then
|
|
if is_ipsec_host $z1 $h; then
|
|
do_iptables $op ${z1}_dyn -o $interface $(match_dest_hosts $host) $(match_ipsec_out $z2 $newhost) -j $chain
|
|
else
|
|
do_iptables $op $(dynamic_fwd $iface) $(match_source_hosts $hosts) -o $interface $(match_dest_hosts $host) $(match_ipsec_out $z2 $newhost) -j $chain
|
|
fi
|
|
fi
|
|
done
|
|
fi
|
|
fi
|
|
done < ${VARDIR}/chains
|
|
|
|
progress_message "$newhost added to zone $zone"
|
|
|
|
done
|
|
|
|
rm -rf $TMP_DIR
|
|
}
|
|
|
|
#
|
|
# Delete a host or networks from a zone
|
|
#
|
|
delete_from_zone() # $1 = <interface>[:<hosts>] $2 = zone
|
|
{
|
|
local interface host zone z h z1 z2 chain delhost
|
|
local dhcp_interfaces blacklist_interfaces maclist_interfaces tcpflags_interfaces
|
|
local rulenum source_chain dest_hosts iface hosts hostlist=
|
|
|
|
DOING=Processing
|
|
DONE=Processed
|
|
#
|
|
# Load $zones
|
|
#
|
|
determine_zones
|
|
#
|
|
# Validate Interfaces File
|
|
#
|
|
validate_interfaces_file
|
|
#
|
|
# Validate Hosts File
|
|
#
|
|
validate_hosts_file
|
|
#
|
|
# Validate IPSec File
|
|
#
|
|
f=$(find_file ipsec)
|
|
|
|
[ -f $f ] && setup_ipsec $f
|
|
|
|
#
|
|
# Normalize host list
|
|
#
|
|
while [ $# -gt 1 ]; do
|
|
interface=${1%%:*}
|
|
host=${1#*:}
|
|
[ "$host" = "$1" ] && host=
|
|
#
|
|
# Be sure that the interface was dynamic at last [re]start
|
|
#
|
|
if ! chain_exists $(input_chain $interface) ; then
|
|
startup_error "Unknown interface $interface"
|
|
fi
|
|
|
|
if ! chain_exists $(dynamic_in $interface) ; then
|
|
startup_error "At last Shorewall [re]start, DYNAMIC_ZONES=No in shorewall.conf"
|
|
fi
|
|
|
|
if [ -z "$host" ]; then
|
|
hostlist="$hostlist $interface:0.0.0.0/0"
|
|
else
|
|
for h in $(separate_list $host); do
|
|
hostlist="$hostlist $interface:$h"
|
|
done
|
|
fi
|
|
|
|
shift
|
|
done
|
|
#
|
|
# Validate Zone
|
|
#
|
|
zone=$1
|
|
|
|
validate_zone $zone || startup_error "Unknown zone: $zone"
|
|
|
|
[ "$zone" = $FW ] && startup_error "Can't delete from the firewall zone"
|
|
|
|
#
|
|
# Be sure that Shorewall has been restarted using a DZ-aware version of the code
|
|
#
|
|
[ -f ${VARDIR}/chains ] || startup_error "${VARDIR}/chains -- file not found"
|
|
[ -f ${VARDIR}/zones ] || startup_error "${VARDIR}/zones -- file not found"
|
|
#
|
|
# Delete the passed hosts from the zone state file
|
|
#
|
|
> ${VARDIR}/zones_$$
|
|
|
|
while read z hosts; do
|
|
if [ "$z" = "$zone" ]; then
|
|
temp=$hosts
|
|
hosts=
|
|
|
|
for host in $hostlist; do
|
|
found=
|
|
for h in $temp; do
|
|
if [ "$h" = "+$host" ]; then
|
|
found=Yes
|
|
break
|
|
fi
|
|
|
|
if [ "$h" = "$host" ]; then
|
|
found=No
|
|
break
|
|
fi
|
|
done
|
|
|
|
[ -n "$found" ] || error_message "WARNING: $host does not appear to be in zone $zone"
|
|
[ "$found" = No ] && startup_error "$host is a permanent member of zone $zone"
|
|
done
|
|
|
|
for h in $temp; do
|
|
found=
|
|
for host in $hostlist; do
|
|
if [ "$h" = "+$host" ]; then
|
|
found=Yes
|
|
break
|
|
fi
|
|
done
|
|
|
|
[ -n "$found" ] || hosts="$hosts $h"
|
|
done
|
|
fi
|
|
|
|
eval ${z}_hosts=\"$hosts\"
|
|
|
|
echo "$z $hosts" >> ${VARDIR}/zones_$$
|
|
done < ${VARDIR}/zones
|
|
|
|
mv -f ${VARDIR}/zones_$$ ${VARDIR}/zones
|
|
|
|
TERMINATOR=fatal_error
|
|
|
|
for delhost in $hostlist; do
|
|
interface=${delhost%%:*}
|
|
host=${delhost#*:}
|
|
#
|
|
# Delete any nat table entries for the host(s)
|
|
#
|
|
qt_iptables -t nat -D $(dynamic_in $interface) $(match_source_hosts $host) $(match_ipsec_in $zone $delhost) -j ${zone}_dnat
|
|
#
|
|
# Delete rules rules the input chains for the passed interface
|
|
#
|
|
while read z1 z2 chain; do
|
|
if [ "$z1" = "$zone" ]; then
|
|
if [ "$z2" = "$FW" ]; then
|
|
qt_iptables -D $(dynamic_in $interface) $(match_source_hosts $host) $(match_ipsec_in $z1 $delhost) -j $chain
|
|
else
|
|
source_chain=$(dynamic_fwd $interface)
|
|
if is_ipsec_host $z1 $delhost ; then
|
|
qt_iptables -D $source_chain $(match_source_hosts $host) $(match_ipsec_in $z1 $newhost) -j ${z1}_frwd
|
|
else
|
|
eval dest_hosts=\"\$${z2}_hosts\"
|
|
|
|
[ "$z2" = "$zone" ] && dest_hosts="$dest_hosts $hostlist"
|
|
|
|
for h in $dest_hosts; do
|
|
[ "$h" = exclude ] && break
|
|
iface=${h%%:*}
|
|
iface=${iface#+}
|
|
hosts=${h#*:}
|
|
|
|
if [ "$iface" != "$interface" -o "$hosts" != "$host" ]; then
|
|
qt_iptables -D $source_chain $(match_source_hosts $host) -o $iface $(match_dest_hosts $hosts) $(match_ipsec_out $z2 $h) -j $chain
|
|
fi
|
|
done
|
|
fi
|
|
fi
|
|
elif [ "$z2" = "$zone" ]; then
|
|
if [ "$z1" = "$FW" ]; then
|
|
qt_iptables -D $(dynamic_out $interface) $(match_dest_hosts $host) $(match_ipsec_out $z2 $delhost) -j $chain
|
|
else
|
|
eval source_hosts=\"\$${z1}_hosts\"
|
|
|
|
for h in $source_hosts; do
|
|
[ "$h" = exclude ] && break
|
|
iface=${h%%:*}
|
|
iface=${iface#+}
|
|
hosts=${h#*:}
|
|
|
|
if [ "$iface" != "$interface" -o "$hosts" != "$host" ]; then
|
|
if is_ipsec_host $z1 $h; then
|
|
qt_iptables -D ${z1}_dyn -o $interface $(match_dest_hosts $host) $(match_ipsec_out $z2 $delhost) -j $chain
|
|
else
|
|
qt_iptables -D $(dynamic_fwd $iface) $(match_source_hosts $hosts) -o $interface $(match_dest_hosts $host) $(match_ipsec_out $z2 $delhost) -j $chain
|
|
fi
|
|
fi
|
|
done
|
|
fi
|
|
fi
|
|
done < ${VARDIR}/chains
|
|
|
|
progress_message "$delhost removed from zone $zone"
|
|
|
|
done
|
|
|
|
rm -rf $TMP_DIR
|
|
}
|