[package] firewall:
[openwrt/svn-archive/archive.git] / package / firewall / files / lib / core_rule.sh
1 # Copyright (C) 2009-2010 OpenWrt.org
2
3 fw_config_get_rule() {
4 [ "${rule_NAME}" != "$1" ] || return
5 fw_config_get_section "$1" rule { \
6 string _name "$1" \
7 string name "" \
8 string src "" \
9 ipaddr src_ip "" \
10 string src_mac "" \
11 string src_port "" \
12 string dest "" \
13 ipaddr dest_ip "" \
14 string dest_port "" \
15 string icmp_type "" \
16 string proto "tcpudp" \
17 string target "" \
18 string family "" \
19 string limit "" \
20 string limit_burst "" \
21 string extra "" \
22 } || return
23 [ -n "$rule_name" ] || rule_name=$rule__name
24 }
25
26 fw_load_rule() {
27 fw_config_get_rule "$1"
28
29 [ "$rule_target" != "NOTRACK" ] || [ -n "$rule_src" ] || [ "$rule_src" != "*" ] || {
30 fw_log error "NOTRACK rule ${rule_name}: needs src, skipping"
31 return 0
32 }
33
34 fw_callback pre rule
35
36 local table=f
37 local chain=input
38 local target="${rule_target:-REJECT}"
39 if [ "$target" == "NOTRACK" ]; then
40 table=r
41 chain="zone_${rule_src}_notrack"
42 else
43 if [ -n "$rule_src" ]; then
44 if [ "$rule_src" != "*" ]; then
45 chain="zone_${rule_src}${rule_dest:+_forward}"
46 else
47 chain="${rule_dest:+forward}"
48 chain="${chain:-input}"
49 fi
50 fi
51
52 if [ -n "$rule_dest" ]; then
53 if [ "$rule_dest" != "*" ]; then
54 target="zone_${rule_dest}_${target}"
55 elif [ "$target" = REJECT ]; then
56 target=reject
57 fi
58 fi
59 fi
60
61 local mode
62 fw_get_family_mode mode ${rule_family:-x} $rule_src I
63
64 local src_spec dest_spec
65 fw_get_negation src_spec '-s' "${rule_src_ip:+$rule_src_ip/$rule_src_ip_prefixlen}"
66 fw_get_negation dest_spec '-d' "${rule_dest_ip:+$rule_dest_ip/$rule_dest_ip_prefixlen}"
67
68 [ "$rule_proto" == "tcpudp" ] && rule_proto="tcp udp"
69 for rule_proto in $rule_proto; do
70 fw_get_negation rule_proto '-p' "$rule_proto"
71 for rule_src_port in ${rule_src_port:-""}; do
72 fw_get_port_range rule_src_port $rule_src_port
73 fw_get_negation rule_src_port '--sport' "$rule_src_port"
74 for rule_dest_port in ${rule_dest_port:-""}; do
75 fw_get_port_range rule_dest_port $rule_dest_port
76 fw_get_negation rule_dest_port '--dport' "$rule_dest_port"
77 for rule_src_mac in ${rule_src_mac:-""}; do
78 fw_get_negation rule_src_mac '--mac-source' "$rule_src_mac"
79 for rule_icmp_type in ${rule_icmp_type:-""}; do
80 [ "$rule_proto" = "-p icmp" ] || rule_icmp_type=""
81 fw add $mode $table $chain $target + \
82 { $rule_src_ip $rule_dest_ip } { \
83 $src_spec $dest_spec $rule_proto \
84 $rule_src_port $rule_dest_port \
85 ${rule_src_mac:+-m mac $rule_src_mac} \
86 ${rule_icmp_type:+--icmp-type $rule_icmp_type} \
87 ${rule_limit:+-m limit --limit $rule_limit \
88 ${rule_limit_burst:+--limit-burst $rule_limit_burst}} \
89 $rule_extra \
90 }
91 done
92 done
93 done
94 done
95 done
96
97 fw_callback post rule
98 }