83de4cc4dc52d49413429ee702fb7b41dfa585fe
[openwrt/openwrt.git] / package / network / ipv6 / map / files / map.sh
1 #!/bin/sh
2 # map.sh - IPv4-in-IPv6 tunnel backend
3 #
4 # Author: Steven Barth <cyrus@openwrt.org>
5 # Copyright (c) 2014 cisco Systems, Inc.
6 #
7 # This program is free software; you can redistribute it and/or modify
8 # it under the terms of the GNU General Public License version 2
9 # as published by the Free Software Foundation
10 #
11 # This program is distributed in the hope that it will be useful,
12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 # GNU General Public License for more details.
15
16 [ -n "$INCLUDE_ONLY" ] || {
17 . /lib/functions.sh
18 . /lib/functions/network.sh
19 . ../netifd-proto.sh
20 init_proto "$@"
21 }
22
23 proto_map_setup() {
24 local cfg="$1"
25 local iface="$2"
26 local link="map-$cfg"
27
28 # uncomment for legacy MAP0 mode
29 #export LEGACY=1
30
31 local type mtu ttl tunlink zone
32 local rule ipaddr ip4prefixlen ip6prefix ip6prefixlen peeraddr ealen psidlen psid offset
33 json_get_vars type mtu ttl tunlink zone
34 json_get_vars rule ipaddr ip4prefixlen ip6prefix ip6prefixlen peeraddr ealen psidlen psid offset
35
36 [ -z "$zone" ] && zone="wan"
37 [ -z "$type" ] && type="map-e"
38 [ -z "$ip4prefixlen" ] && ip4prefixlen=32
39
40 ( proto_add_host_dependency "$cfg" "::" "$tunlink" )
41
42 if [ -z "$rule" ]; then
43 rule="type=$type,ipv6prefix=$ip6prefix,prefix6len=$ip6prefixlen,ipv4prefix=$ipaddr,prefix4len=$ip4prefixlen"
44 [ -n "$psid" ] && rule="$rule,psid=$psid"
45 [ -n "$psidlen" ] && rule="$rule,psidlen=$psidlen"
46 [ -n "$offset" ] && rule="$rule,offset=$offset"
47 [ -n "$ealen" ] && rule="$rule,ealen=$ealen"
48 if [ "$type" = "map-t" ]; then
49 rule="$rule,dmr=$peeraddr"
50 else
51 rule="$rule,br=$peeraddr"
52 fi
53 fi
54
55 RULE_DATA=$(mapcalc ${tunlink:-\*} $rule)
56 if [ "$?" != 0 ]; then
57 proto_notify_error "$cfg" "INVALID_MAP_RULE"
58 proto_block_restart "$cfg"
59 return
60 fi
61
62 eval $RULE_DATA
63
64 if [ -z "$RULE_BMR" ]; then
65 proto_notify_error "$cfg" "NO_MATCHING_PD"
66 proto_block_restart "$cfg"
67 return
68 fi
69
70 k=$RULE_BMR
71 if [ "$type" = "lw4o6" -o "$type" = "map-e" ]; then
72 proto_init_update "$link" 1
73 proto_add_ipv4_address $(eval "echo \$RULE_${k}_IPV4ADDR") "" "" ""
74
75 proto_add_tunnel
76 json_add_string mode ipip6
77 json_add_int mtu "${mtu:-1280}"
78 json_add_int ttl "${ttl:-64}"
79 json_add_string local $(eval "echo \$RULE_${k}_IPV6ADDR")
80 json_add_string remote $(eval "echo \$RULE_${k}_BR")
81 json_add_string link $(eval "echo \$RULE_${k}_PD6IFACE")
82
83 if [ "$type" = "map-e" ]; then
84 json_add_array "fmrs"
85 for i in $(seq $RULE_COUNT); do
86 [ "$(eval "echo \$RULE_${i}_FMR")" != 1 ] && continue
87 fmr="$(eval "echo \$RULE_${i}_IPV6PREFIX")/$(eval "echo \$RULE_${i}_PREFIX6LEN")"
88 fmr="$fmr,$(eval "echo \$RULE_${i}_IPV4PREFIX")/$(eval "echo \$RULE_${i}_PREFIX4LEN")"
89 fmr="$fmr,$(eval "echo \$RULE_${i}_EALEN"),$(eval "echo \$RULE_${i}_OFFSET")"
90 json_add_string "" "$fmr"
91 done
92 json_close_array
93 fi
94
95 proto_close_tunnel
96 elif [ "$type" = "map-t" -a -f "/proc/net/nat46/control" ]; then
97 proto_init_update "$link" 1
98 local style="MAP"
99 [ "$LEGACY" = 1 ] && style="MAP0"
100
101 echo add $link > /proc/net/nat46/control
102 local cfgstr="local.style $style local.v4 $(eval "echo \$RULE_${k}_IPV4PREFIX")/$(eval "echo \$RULE_${k}_PREFIX4LEN")"
103 cfgstr="$cfgstr local.v6 $(eval "echo \$RULE_${k}_IPV6PREFIX")/$(eval "echo \$RULE_${k}_PREFIX6LEN")"
104 cfgstr="$cfgstr local.ea-len $(eval "echo \$RULE_${k}_EALEN") local.psid-offset $(eval "echo \$RULE_${k}_OFFSET")"
105 cfgstr="$cfgstr remote.v4 0.0.0.0/0 remote.v6 $(eval "echo \$RULE_${k}_DMR") remote.style RFC6052 remote.ea-len 0 remote.psid-offset 0"
106 echo config $link $cfgstr > /proc/net/nat46/control
107
108 for i in $(seq $RULE_COUNT); do
109 [ "$(eval "echo \$RULE_${i}_FMR")" != 1 ] && continue
110 local cfgstr="remote.style $style remote.v4 $(eval "echo \$RULE_${i}_IPV4PREFIX")/$(eval "echo \$RULE_${i}_PREFIX4LEN")"
111 cfgstr="$cfgstr remote.v6 $(eval "echo \$RULE_${i}_IPV6PREFIX")/$(eval "echo \$RULE_${i}_PREFIX6LEN")"
112 cfgstr="$cfgstr remote.ea-len $(eval "echo \$RULE_${i}_EALEN") remote.psid-offset $(eval "echo \$RULE_${i}_OFFSET")"
113 echo insert $link $cfgstr > /proc/net/nat46/control
114 done
115 else
116 proto_notify_error "$cfg" "UNSUPPORTED_TYPE"
117 proto_block_restart "$cfg"
118 fi
119
120 proto_add_ipv4_route "0.0.0.0" 0
121 proto_add_data
122 [ "$zone" != "-" ] && json_add_string zone "$zone"
123
124 json_add_array firewall
125 if [ -z "$(eval "echo \$RULE_${k}_PORTSETS")" ]; then
126 json_add_object ""
127 json_add_string type nat
128 json_add_string target SNAT
129 json_add_string family inet
130 json_add_string snat_ip $(eval "echo \$RULE_${k}_IPV4ADDR")
131 json_close_object
132 else
133 for portset in $(eval "echo \$RULE_${k}_PORTSETS"); do
134 for proto in icmp tcp udp; do
135 json_add_object ""
136 json_add_string type nat
137 json_add_string target SNAT
138 json_add_string family inet
139 json_add_string proto "$proto"
140 json_add_boolean connlimit_ports 1
141 json_add_string snat_ip $(eval "echo \$RULE_${k}_IPV4ADDR")
142 json_add_string snat_port "$portset"
143 json_close_object
144 done
145 done
146 fi
147 if [ "$type" = "map-t" ]; then
148 json_add_object ""
149 json_add_string type rule
150 json_add_string family inet6
151 json_add_string proto all
152 json_add_string direction in
153 json_add_string dest "$zone"
154 json_add_string src "$zone"
155 json_add_string src_ip $(eval "echo \$RULE_${k}_IPV6ADDR")
156 json_add_string target ACCEPT
157 json_close_object
158 json_add_object ""
159 json_add_string type rule
160 json_add_string family inet6
161 json_add_string proto all
162 json_add_string direction out
163 json_add_string dest "$zone"
164 json_add_string src "$zone"
165 json_add_string dest_ip $(eval "echo \$RULE_${k}_IPV6ADDR")
166 json_add_string target ACCEPT
167 json_close_object
168 proto_add_ipv6_route $(eval "echo \$RULE_${k}_IPV6ADDR") 128
169 fi
170 json_close_array
171 proto_close_data
172
173 proto_send_update "$cfg"
174
175 if [ "$type" = "lw4o6" -o "$type" = "map-e" ]; then
176 json_init
177 json_add_string name "${cfg}_local"
178 json_add_string ifname "@$(eval "echo \$RULE_${k}_PD6IFACE")"
179 json_add_string proto "static"
180 json_add_array ip6addr
181 json_add_string "" "$(eval "echo \$RULE_${k}_IPV6ADDR")"
182 json_close_array
183 json_close_object
184 ubus call network add_dynamic "$(json_dump)"
185 fi
186 }
187
188 proto_map_teardown() {
189 local cfg="$1"
190 ifdown "${cfg}_local"
191 }
192
193 proto_map_init_config() {
194 no_device=1
195 available=1
196
197 proto_config_add_string "rule"
198 proto_config_add_string "ipaddr"
199 proto_config_add_int "ip4prefixlen"
200 proto_config_add_string "ip6prefix"
201 proto_config_add_int "ip6prefixlen"
202 proto_config_add_string "peeraddr"
203 proto_config_add_int "psidlen"
204 proto_config_add_int "psid"
205 proto_config_add_int "offset"
206
207 proto_config_add_string "tunlink"
208 proto_config_add_int "mtu"
209 proto_config_add_int "ttl"
210 proto_config_add_string "zone"
211 }
212
213 [ -n "$INCLUDE_ONLY" ] || {
214 add_protocol map
215 }