From dd4934a943d4de4fd4a85620889276bc0c8bdcc5 Mon Sep 17 00:00:00 2001
From: Jo-Philipp Wich <jow@openwrt.org>
Date: Wed, 6 Jul 2011 22:10:46 +0000
Subject: firewall: - solve scoping issues when multiple values are used,
thanks Daniel Dickinson - ignore src_port/dest_port for proto icmp rules,
ignore icmp_type for non-icmp rules - properly handle icmp when proto is
given in numerical form (1, 58) - support negated icmp types
SVN-Revision: 27500
---
package/firewall/files/lib/core_redirect.sh | 10 +++----
package/firewall/files/lib/core_rule.sh | 42 +++++++++++++----------------
package/firewall/files/lib/fw.sh | 2 +-
3 files changed, 25 insertions(+), 29 deletions(-)
(limited to 'package/firewall/files')
diff --git a/package/firewall/files/lib/core_redirect.sh b/package/firewall/files/lib/core_redirect.sh
index 0b8030d96a..a6245fad24 100644
--- a/package/firewall/files/lib/core_redirect.sh
+++ b/package/firewall/files/lib/core_redirect.sh
@@ -91,15 +91,15 @@ fw_load_redirect() {
fw_get_negation destports '--dport' "$destports"
[ "$redirect_proto" == "tcpudp" ] && redirect_proto="tcp udp"
- for redirect_proto in $redirect_proto; do
- fw_get_negation redirect_proto '-p' "$redirect_proto"
- for redirect_src_mac in ${redirect_src_mac:-""}; do
- fw_get_negation redirect_src_mac '--mac-source' "$redirect_src_mac"
+ local pr; for pr in $redirect_proto; do
+ fw_get_negation pr '-p' "$pr"
+ local sm; for sm in ${redirect_src_mac:-""}; do
+ fw_get_negation sm '--mac-source' "$sm"
fw add $mode n $natchain $redirect_target + \
{ $redirect_src_ip $redirect_dest_ip } { \
$srcaddr $srcdaddr $redirect_proto \
$srcports $srcdports \
- ${redirect_src_mac:+-m mac $redirect_src_mac} \
+ ${sm:+-m mac $sm} \
$natopt $nataddr${natports:+:$natports} \
$redirect_options \
}
diff --git a/package/firewall/files/lib/core_rule.sh b/package/firewall/files/lib/core_rule.sh
index 55381598b5..0a25fcd953 100644
--- a/package/firewall/files/lib/core_rule.sh
+++ b/package/firewall/files/lib/core_rule.sh
@@ -65,32 +65,28 @@ fw_load_rule() {
fw_get_negation src_spec '-s' "${rule_src_ip:+$rule_src_ip/$rule_src_ip_prefixlen}"
fw_get_negation dest_spec '-d' "${rule_dest_ip:+$rule_dest_ip/$rule_dest_ip_prefixlen}"
- local rule_src_port_copy
- local rule_dest_port_copy
-
[ "$rule_proto" == "tcpudp" ] && rule_proto="tcp udp"
- rule_src_port_copy="$rule_src_port"
- rule_dest_port_copy="$rule_dest_port"
- for rule_proto in $rule_proto; do
- rule_src_port="$rule_src_port_copy"
- rule_dest_port="$rule_dest_port_copy"
- fw_get_negation rule_proto '-p' "$rule_proto"
- for rule_src_port in ${rule_src_port:-""}; do
- fw_get_port_range rule_src_port $rule_src_port
- fw_get_negation rule_src_port '--sport' "$rule_src_port"
- for rule_dest_port in ${rule_dest_port:-""}; do
- fw_get_port_range rule_dest_port $rule_dest_port
- fw_get_negation rule_dest_port '--dport' "$rule_dest_port"
- for rule_src_mac in ${rule_src_mac:-""}; do
- fw_get_negation rule_src_mac '--mac-source' "$rule_src_mac"
- for rule_icmp_type in ${rule_icmp_type:-""}; do
- [ "$rule_proto" = "-p icmp" ] || rule_icmp_type=""
+ local pr; for pr in $rule_proto; do
+ fw_get_negation pr '-p' "$pr"
+ local sp; for sp in ${rule_src_port:-""}; do
+ fw_get_port_range sp $sp
+ fw_get_negation sp '--sport' "$sp"
+ local dp; for dp in ${rule_dest_port:-""}; do
+ fw_get_port_range dp $dp
+ fw_get_negation dp '--dport' "$dp"
+ local sm; for sm in ${rule_src_mac:-""}; do
+ fw_get_negation sm '--mac-source' "$sm"
+ local it; for it in ${rule_icmp_type:-""}; do
+ fw_get_negation it '--icmp-type' "$it"
+ case "$pr" in
+ *" icmp"|*" icmpv6"|*" 1"|*" 58") sp=""; dp="" ;;
+ *) it="" ;;
+ esac
fw add $mode $table $chain $target + \
{ $rule_src_ip $rule_dest_ip } { \
- $src_spec $dest_spec $rule_proto \
- $rule_src_port $rule_dest_port \
- ${rule_src_mac:+-m mac $rule_src_mac} \
- ${rule_icmp_type:+--icmp-type $rule_icmp_type} \
+ $src_spec $dest_spec \
+ $pr $sp $dp $it \
+ ${sm:+-m mac $sm} \
${rule_limit:+-m limit --limit $rule_limit \
${rule_limit_burst:+--limit-burst $rule_limit_burst}} \
$rule_extra \
diff --git a/package/firewall/files/lib/fw.sh b/package/firewall/files/lib/fw.sh
index 647bcd6a54..a13eb7eb13 100644
--- a/package/firewall/files/lib/fw.sh
+++ b/package/firewall/files/lib/fw.sh
@@ -166,7 +166,7 @@ fw__exec() { # <action> <family> <table> <chain> <target> <position> { <rules> }
while [ $# -gt 1 ]; do
# special parameter handling
case "$1:$2" in
- -p:icmp*|--protocol:icmp*)
+ -p:icmp*|-p:1|-p:58|--protocol:icmp*|--protocol:1|--protocol:58)
[ "$app" = ip6tables ] && \
cmdline="$cmdline -p icmpv6" || \
cmdline="$cmdline -p icmp"
--
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