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|
#!/bin/sh
# map.sh - IPv4-in-IPv6 tunnel backend
#
# Author: Steven Barth <cyrus@openwrt.org>
# Copyright (c) 2014 cisco Systems, Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2
# as published by the Free Software Foundation
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
[ -n "$INCLUDE_ONLY" ] || {
. /lib/functions.sh
. /lib/functions/network.sh
. ../netifd-proto.sh
init_proto "$@"
}
proto_map_setup() {
local cfg="$1"
local iface="$2"
local link="map-$cfg"
# uncomment for legacy MAP0 mode
#export LEGACY=1
local type mtu ttl tunlink zone
local rule ipaddr ip4prefixlen ip6prefix ip6prefixlen peeraddr ealen psidlen psid offset
json_get_vars type mtu ttl tunlink zone
json_get_vars rule ipaddr ip4prefixlen ip6prefix ip6prefixlen peeraddr ealen psidlen psid offset
[ -z "$zone" ] && zone="wan"
[ -z "$type" ] && type="map-e"
[ -z "$ip4prefixlen" ] && ip4prefixlen=32
( proto_add_host_dependency "$cfg" "::" "$tunlink" )
if [ -z "$rule" ]; then
rule="type=$type,ipv6prefix=$ip6prefix,prefix6len=$ip6prefixlen,ipv4prefix=$ipaddr,prefix4len=$ip4prefixlen"
[ -n "$psid" ] && rule="$rule,psid=$psid"
[ -n "$psidlen" ] && rule="$rule,psidlen=$psidlen"
[ -n "$offset" ] && rule="$rule,offset=$offset"
[ -n "$ealen" ] && rule="$rule,ealen=$ealen"
rule="$rule,br=$peeraddr"
fi
RULE_DATA=$(mapcalc ${tunlink:-\*} $rule)
if [ "$?" != 0 ]; then
proto_notify_error "$cfg" "INVALID_MAP_RULE"
proto_block_restart "$cfg"
return
fi
eval $RULE_DATA
if [ -z "$RULE_BMR" ]; then
proto_notify_error "$cfg" "NO_MATCHING_PD"
proto_block_restart "$cfg"
return
fi
k=$RULE_BMR
if [ "$type" = "lw4o6" -o "$type" = "map-e" ]; then
proto_init_update "$link" 1
proto_add_ipv4_address $(eval "echo \$RULE_${k}_IPV4ADDR") "" "" ""
proto_add_tunnel
json_add_string mode ipip6
json_add_int mtu "${mtu:-1280}"
json_add_int ttl "${ttl:-64}"
json_add_string local $(eval "echo \$RULE_${k}_IPV6ADDR")
json_add_string remote $(eval "echo \$RULE_${k}_BR")
json_add_string link $(eval "echo \$RULE_${k}_PD6IFACE")
if [ "$type" = "map-e" ]; then
json_add_array "fmrs"
for i in $(seq $RULE_COUNT); do
[ "$(eval "echo \$RULE_${i}_FMR")" != 1 ] && continue
fmr="$(eval "echo \$RULE_${i}_IPV6PREFIX")/$(eval "echo \$RULE_${i}_PREFIX6LEN")"
fmr="$fmr,$(eval "echo \$RULE_${i}_IPV4PREFIX")/$(eval "echo \$RULE_${i}_PREFIX4LEN")"
fmr="$fmr,$(eval "echo \$RULE_${i}_EALEN"),$(eval "echo \$RULE_${i}_OFFSET")"
json_add_string "" "$fmr"
done
json_close_array
fi
proto_close_tunnel
else
proto_notify_error "$cfg" "UNSUPPORTED_TYPE"
proto_block_restart "$cfg"
fi
proto_add_ipv4_route "0.0.0.0" 0
proto_add_data
[ "$zone" != "-" ] && json_add_string zone "$zone"
json_add_array firewall
for portset in $(eval "echo \$RULE_${k}_PORTSETS"); do
for proto in icmp tcp udp; do
json_add_object ""
json_add_string type nat
json_add_string target SNAT
json_add_string family inet
json_add_string proto "$proto"
json_add_boolean connlimit_ports 1
json_add_string snat_ip $(eval "echo \$RULE_${k}_IPV4ADDR")
json_add_string snat_port "$portset"
json_close_object
done
done
json_close_array
proto_close_data
proto_send_update "$cfg"
if [ "$type" = "lw4o6" -o "$type" = "map-e" ]; then
json_init
json_add_string name "${cfg}_local"
json_add_string ifname "@$(eval "echo \$RULE_${k}_PD6IFACE")"
json_add_string proto "static"
json_add_array ip6addr
json_add_string "" "$(eval "echo \$RULE_${k}_IPV6ADDR")"
json_close_array
json_close_object
ubus call network add_dynamic "$(json_dump)"
fi
}
proto_map_teardown() {
local cfg="$1"
ifdown "${cfg}_local"
}
proto_map_init_config() {
no_device=1
available=1
proto_config_add_string "rule"
proto_config_add_string "ipaddr"
proto_config_add_int "ip4prefixlen"
proto_config_add_string "ip6prefix"
proto_config_add_int "ip6prefixlen"
proto_config_add_string "peeraddr"
proto_config_add_int "psidlen"
proto_config_add_int "psid"
proto_config_add_int "offset"
proto_config_add_string "tunlink"
proto_config_add_int "mtu"
proto_config_add_int "ttl"
proto_config_add_string "zone"
}
[ -n "$INCLUDE_ONLY" ] || {
add_protocol map
}
|
