diff options
author | jow <jow@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2011-06-30 01:31:23 +0000 |
---|---|---|
committer | jow <jow@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2011-06-30 01:31:23 +0000 |
commit | 87281df9037fc10f244c4f31e9731cc1332f8dad (patch) | |
tree | 16c0df4e8d376ce0b821752124885dd9195da43c /package/firewall/files/lib/core_rule.sh | |
parent | 0cca467832e1e56a22be77ddf949c6169fc8d89c (diff) |
[package] firewall:
- allow multiple ports, protocols, macs, icmp types per rule
- implement "limit" and "limit_burst" options for rules
- implement "extra" option to rules and redirects for passing arbritary flags to iptables
- implement negations for "src_port", "dest_port", "src_dport", "src_mac", "proto" and "icmp_type" options
- allow wildcard (*) "src" and "dest" options in rules to allow specifying "any" source or destination
- validate symbolic icmp-type names against the selected iptables binary
- properly handle forwarded ICMPv6 traffic in the default configuration
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@27317 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'package/firewall/files/lib/core_rule.sh')
-rw-r--r-- | package/firewall/files/lib/core_rule.sh | 63 |
1 files changed, 45 insertions, 18 deletions
diff --git a/package/firewall/files/lib/core_rule.sh b/package/firewall/files/lib/core_rule.sh index 8c234a33a1..64a510df92 100644 --- a/package/firewall/files/lib/core_rule.sh +++ b/package/firewall/files/lib/core_rule.sh @@ -16,24 +16,23 @@ fw_config_get_rule() { string proto "tcpudp" \ string target "" \ string family "" \ + string limit "" \ + string limit_burst "" \ + string extra "" \ } || return [ -n "$rule_name" ] || rule_name=$rule__name - [ "$rule_proto" == "icmp" ] || rule_icmp_type= } fw_load_rule() { fw_config_get_rule "$1" - [ "$rule_target" != "NOTRACK" ] || [ -n "$rule_src" ] || { + [ "$rule_target" != "NOTRACK" ] || [ -n "$rule_src" ] || [ "$rule_src" != "*" ] || { fw_log error "NOTRACK rule ${rule_name}: needs src, skipping" return 0 } fw_callback pre rule - fw_get_port_range rule_src_port $rule_src_port - fw_get_port_range rule_dest_port $rule_dest_port - local table=f local chain=input local target="${rule_target:-REJECT}" @@ -41,8 +40,22 @@ fw_load_rule() { table=r chain="zone_${rule_src}_notrack" else - [ -n "$rule_src" ] && chain="zone_${rule_src}${rule_dest:+_forward}" - [ -n "$rule_dest" ] && target="zone_${rule_dest}_${target}" + if [ -n "$rule_src" ]; then + if [ "$rule_src" != "*" ]; then + chain="zone_${rule_src}${rule_dest:+_forward}" + else + chain="${rule_dest:+forward}" + chain="${chain:-input}" + fi + fi + + if [ -n "$rule_dest" ]; then + if [ "$rule_dest" != "*" ]; then + target="zone_${rule_dest}_${target}" + elif [ "$target" = REJECT ]; then + target=reject + fi + fi fi local mode @@ -54,17 +67,31 @@ fw_load_rule() { [ "$rule_proto" == "tcpudp" ] && rule_proto="tcp udp" for rule_proto in $rule_proto; do - local rule_pos - eval 'rule_pos=$((++FW__RULE_COUNT_'${mode#G}'_'$chain'))' - - fw add $mode $table $chain $target $rule_pos { $rule_src_ip $rule_dest_ip } { \ - $src_spec $dest_spec \ - ${rule_proto:+-p $rule_proto} \ - ${rule_src_port:+--sport $rule_src_port} \ - ${rule_src_mac:+-m mac --mac-source $rule_src_mac} \ - ${rule_dest_port:+--dport $rule_dest_port} \ - ${rule_icmp_type:+--icmp-type $rule_icmp_type} \ - } + fw_get_negation rule_proto '-p' "$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="" + 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} \ + ${rule_limit:+-m limit --limit $rule_limit \ + ${rule_limit_burst:+--limit-burst $rule_limit_burst}} \ + $rule_extra \ + } + done + done + done + done done fw_callback post rule |