232 lines
6 KiB
Lua
232 lines
6 KiB
Lua
--[[
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LuCI - Lua Configuration Interface
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Copyright 2008 Steven Barth <steven@midlink.org>
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Copyright 2008 Jo-Philipp Wich <xm@leipzig.freifunk.net>
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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$Id$
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]]--
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local uci = require "luci.model.uci".cursor()
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-------------------- View --------------------
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f = SimpleForm("siitwizward", "4over6-Assistent",
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"Dieser Assistent unterstüzt bei der Einrichtung von IPv4-over-IPv6 Translation.")
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mode = f:field(ListValue, "mode", "Betriebsmodus")
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mode:value("gateway", "Gateway")
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mode:value("client", "Client")
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dev = f:field(ListValue, "device", "WLAN-Gerät")
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uci:foreach("wireless", "wifi-device",
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function(section)
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dev:value(section[".name"])
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end)
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lanip = f:field(Value, "ipaddr", "LAN IP Adresse")
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lanip.value = "172.23.1.1"
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lanip:depends("mode", "client")
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lanmsk = f:field(Value, "netmask", "LAN Netzmaske")
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lanmsk.value = "255.255.0.0"
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lanmsk:depends("mode", "client")
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-------------------- Control --------------------
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LL_PREFIX = luci.ip.IPv6("fe80::/64")
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--
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-- find link-local address
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--
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function find_ll()
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for _, r in ipairs(luci.sys.net.routes6()) do
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if LL_PREFIX:contains(r.dest) and r.dest:higher(LL_PREFIX) then
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return r.dest:sub(LL_PREFIX)
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end
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end
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return luci.ip.IPv6("::")
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end
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function f.handle(self, state, data)
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if state == FORM_VALID then
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luci.http.redirect(luci.dispatcher.build_url("admin", "uci", "changes"))
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return false
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elseif state == FORM_INVALID then
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self.errmessage = "Ungültige Eingabe: Bitte die Formularfelder auf Fehler prüfen."
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end
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return true
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end
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function mode.write(self, section, value)
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--
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-- Configure wifi device
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--
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local wifi_device = dev:formvalue(section)
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local wifi_essid = uci:get("siit", "wifi", "essid") or "6mesh.freifunk.net"
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local wifi_bssid = uci:get("siit", "wifi", "bssid") or "02:ca:ff:ee:ba:be"
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local wifi_channel = uci:get("siit", "wifi", "channel") or "1"
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-- nuke old device definition
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uci:delete_all("wireless", "wifi-iface",
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function(s) return s.device == wifi_device end )
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uci:delete_all("network", "interface",
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function(s) return s['.name'] == wifi_device end )
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-- create wifi device definition
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uci:tset("wireless", wifi_device, {
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disabled = 0,
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channel = wifi_channel,
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-- txantenna = 1,
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-- rxantenna = 1,
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-- diversity = 0
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})
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uci:section("wireless", "wifi-iface", nil, {
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encryption = "none",
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mode = "adhoc",
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network = wifi_device,
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device = wifi_device,
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ssid = wifi_essid,
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bssid = wifi_bssid,
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})
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--
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-- Determine defaults
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--
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local ula_prefix = uci:get("siit", "ipv6", "ula_prefix") or "fd00::"
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local ula_global = uci:get("siit", "ipv6", "ula_global") or "00ca:ffee:babe::" -- = Freifunk
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local ula_subnet = uci:get("siit", "ipv6", "ula_subnet") or "0000:0000:0000:4223::" -- = Berlin
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local siit_prefix = uci:get("siit", "ipv6", "siit_prefix") or "::ffff:0000:0000"
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-- Find wifi interface
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local device = dev:formvalue(section)
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--
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-- Generate ULA
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--
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local ula = luci.ip.IPv6("::/64")
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for _, prefix in ipairs({ ula_prefix, ula_global, ula_subnet }) do
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ula = ula:add(luci.ip.IPv6(prefix))
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end
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ula = ula:add(find_ll())
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--
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-- Gateway mode
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--
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-- * wan port is dhcp, lan port is 172.23.1.1/24
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-- * siit0 gets a dummy address: 169.254.42.42
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-- * wl0 gets an ipv6 address, in this case the fdca:ffee:babe::1:1/64
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-- * we do a ::ffff:ffff:0/96 route into siit0, so everything from 6mesh goes into translation.
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-- * an HNA6 of ::ffff:ffff:0:0/96 announces the mapped 0.0.0.0/0 ipv4 space.
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-- * MTU on WAN, LAN down to 1400, ipv6 headers are slighly larger.
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if value == "gateway" then
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uci:set("network", "wan", "mtu", 1400)
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-- use full siit subnet
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siit_route = luci.ip.IPv6(siit_prefix .. "/96")
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--
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-- Client mode
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--
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-- * 172.23.2.1/24 on its lan, fdca:ffee:babe::1:2 on wl0 and the usual dummy address on siit0.
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-- * we do a ::ffff:ffff:172.13.2.0/120 to siit0, because in this case, only traffic directed to clients needs to go into translation.
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-- * same route as HNA6 announcement to catch the traffic out of the mesh.
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-- * Also, MTU on LAN reduced to 1400.
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else
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-- lan interface
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local lan_net = luci.ip.IPv4(
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lanip:formvalue(section) or "192.168.1.1",
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lanmsk:formvalue(section) or "255.255.255.0"
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)
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uci:tset("network", "lan", {
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mtu = 1400,
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ipaddr = lan_net:host():string(),
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netmask = lan_net:mask():string()
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})
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-- derive siit subnet from lan config
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siit_route = luci.ip.IPv6(
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siit_prefix .. "/" .. (96 + lan_net:prefix())
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):add(lan_net[2])
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end
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-- siit0 interface
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uci:delete_all("network", "interface",
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function(s) return ( s.ifname == "siit0" ) end)
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uci:section("network", "interface", "siit0", {
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ifname = "siit0",
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proto = "static",
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ipaddr = "169.254.42.42",
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netmask = "255.255.255.0"
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})
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-- siit0 route
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uci:delete_all("network", "route6",
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function(s) return siit_route:contains(luci.ip.IPv6(s.target)) end)
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uci:section("network", "route6", nil, {
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interface = "siit0",
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target = siit_route:string()
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})
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-- create wifi network interface
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uci:section("network", "interface", wifi_device, {
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proto = "static",
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mtu = 1400,
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ip6addr = ula:string()
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})
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-- nuke old olsrd interfaces
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uci:delete_all("olsrd", "Interface",
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function(s) return s.interface == wifi_device end)
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-- configure olsrd interface
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uci:foreach("olsrd", "olsrd",
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function(s) uci:set("olsrd", s['.name'], "IpVersion", 6) end)
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uci:section("olsrd", "Interface", nil, {
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ignore = 0,
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interface = wifi_device,
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Ip6AddrType = "global"
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})
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-- hna6
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uci:delete_all("olsrd", "Hna6",
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function(s)
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if s.netaddr and s.prefix then
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return siit_route:contains(luci.ip.IPv6(s.netaddr.."/"..s.prefix))
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end
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end)
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uci:section("olsrd", "Hna6", nil, {
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netaddr = siit_route:host():string(),
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prefix = siit_route:prefix()
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})
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uci:save("wireless")
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uci:save("network")
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uci:save("olsrd")
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end
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return f
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