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Infrastructure for Unified Handling of Exclude Lists

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git-svn-id: https://shorewall.svn.sourceforge.net/svnroot/shorewall/trunk@2457 fbd18981-670d-0410-9b5c-8dc0c1a9a2bb
This commit is contained in:
teastep 2005-08-05 15:52:03 +00:00
parent bba152b119
commit 39ca0828db
1 changed files with 28 additions and 38 deletions
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66
Shorewall/firewall
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@ -2876,6 +2876,27 @@ setup_ecn() # $1 = file name
fi
}
#
# Set up an exclusion chain and return it's name
#
build_exclusion_chain() # $1 = table, $2 = SOURCE exclusion list, $3 = DESTINATION exclusion list
{
local chain=excl_${EXCLUSION_SEQ} net
EXCLUSION_SEQ=$(( $EXCLUSION_SEQ + 1 ))
run_iptables -t $1 -N $chain
for net in $(separate_list $2); do
run_iptables -t $1 -A $chain $(source_ip_range $net) -j RETURN
done
for net in $(separate_list 3); do
run_iptables -t $1 -A $chain $(dest_ip_range $net) -j RETURN
done
echo $chain
}
#
# Process a TC Rule - $MARKING_CHAIN is assumed to contain the name of the
@ -4623,7 +4644,7 @@ add_nat_rule() {
;;
!*)
if [ $(list_count $addr) -gt 1 ]; then
excludedests="$(separate_list ${addr#\!})"
excludedests="${addr#\!}"
addr=
fi
;;
@ -4660,18 +4681,12 @@ add_nat_rule() {
if [ $COMMAND != check ]; then
if [ "$source" = "$FW" ]; then
if [ -n "$excludedests" ]; then
chain=nonat${nonat_seq}
nonat_seq=$(($nonat_seq + 1))
createnatchain $chain
chain=$(build_exclusion_chain nat "" $excludedests)
for adr in $(separate_list $addr); do
run_iptables2 -t nat -A OUTPUT $cli $proto $userandgroup $multiport $sports $dports $(dest_ip_range $adr) -j $chain
done
for adr in $excludedests; do
addnatrule $chain $(dest_ip_range $adr) -j RETURN
done
if [ -n "$loglevel" ]; then
log_rule $loglevel $chain $logtarget -t nat
fi
@ -4691,9 +4706,7 @@ add_nat_rule() {
chain=$(dnat_chain $source)
if [ -n "${excludezones}${excludedests}" ]; then
chain=nonat${nonat_seq}
nonat_seq=$(($nonat_seq + 1))
createnatchain $chain
chain=$( build_exclusion_chain nat "" $excludedests
for adr in $(separate_list $addr); do
addnatrule $(dnat_chain $source) $cli $proto $multiport $sports $dports $(dest_ip_range $adr) -j $chain
@ -4706,10 +4719,6 @@ add_nat_rule() {
done
done
for adr in $excludedests; do
addnatrule $chain $(dest_ip_range $adr) -j RETURN
done
if [ -n "$loglevel" ]; then
log_rule_limit $loglevel $chain $chain $logtarget "$ratelimit" "$logtag" -A -t nat
fi
@ -6274,13 +6283,8 @@ setup_masq()
case $destnets in
!*)
newchain=masq${masq_seq}
createnatchain $newchain
destnets=${destnets#!}
for destnet in $(separate_list $destnets); do
addnatrule $newchain $(dest_ip_range $destnet) -j RETURN
done
newchain=$( build_exclusion_chain nat "$nomasq" "$destnets" )
if [ -n "$networks" ]; then
for s in $networks; do
@ -6291,24 +6295,17 @@ setup_masq()
addnatrule $chain -j $newchain
fi
masq_seq=$(($masq_seq + 1))
chain=$newchain
destnets=0.0.0.0/0
proto=
ports=
policy=
if [ -n "$nomasq" ]; then
for addr in $(separate_list $nomasq); do
addnatrule $chain $(source_ip_range $addr) -j RETURN
done
source="$source except $nomasq"
fi
[ -n "$nomasq" ] && source="$source except $nomasq"
;;
*)
if [ -n "$nomasq" ]; then
newchain=masq${masq_seq}
createnatchain $newchain
newchain=$( build_exclusion_chain nat $nomasq )
if [ -n "$networks" ]; then
for s in $networks; do
@ -6322,18 +6319,12 @@ setup_masq()
done
fi
masq_seq=$(($masq_seq + 1))
chain=$newchain
networks=
destnets=0.0.0.0/0
proto=
ports=
policy=
for addr in $(separate_list $nomasq); do
addnatrule $chain $(source_ip_range $addr) -j RETURN
done
source="$source except $nomasq"
fi
;;
@ -8497,11 +8488,10 @@ do_initialize() {
PROVIDERS=
CRITICALHOSTS=
IPSECFILE=
EXCLUSION_SEQ=1
stopping=
have_mutex=
masq_seq=1
nonat_seq=1
aliases_to_add=
FUNCTIONS=$SHARED_DIR/functions