--[[ LuCI - Lua Configuration Interface Copyright 2008 Steven Barth Copyright 2008 Jo-Philipp Wich Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 $Id$ ]]-- local uci = require "luci.model.uci".cursor() local tools = require "luci.tools.ffwizard" local util = require "luci.util" local io = require "io" -------------------- View -------------------- f = SimpleForm("siitwizward", "4over6-Assistent", "Dieser Assistent unterstüzt bei der Einrichtung von IPv4-over-IPv6 Translation.") mode = f:field(ListValue, "mode", "Betriebsmodus") mode:value("gateway", "Gateway") mode:value("client", "Client") dev = f:field(ListValue, "device", "WLAN-Gerät") uci:foreach("network", "interface", function(section) if section[".name"] ~= "siit0" then dev:value(section[".name"]) end end) -------------------- Control -------------------- LL_PREFIX = luci.ip.IPv6("fe80::/16") -- -- find link-local address -- function find_ll(dev) for _, r in ipairs(luci.sys.net.routes6()) do if r.device == dev and LL_PREFIX:contains(r.dest) then return r.dest:sub(LL_PREFIX) end end return luci.ip.IPv6("::") end function f.handle(self, state, data) if state == FORM_VALID then luci.http.redirect(luci.dispatcher.build_url("admin", "uci", "changes")) return false elseif state == FORM_INVALID then self.errmessage = "Ungültige Eingabe: Bitte die Formularfelder auf Fehler prüfen." end return true end function mode.write(self, section, value) -- -- Determine defaults -- local ula_prefix = uci:get("siit", "defaults", "ula_prefix") or "fd00::" local ula_global = uci:get("siit", "defaults", "ula_global") or "00ca:ffee:babe::" -- = Freifunk local ula_subnet = uci:get("siit", "defaults", "ula_subnet") or "0000:0000:0000:4223::" -- = Berlin local siit_prefix = uci:get("siit", "defaults", "siit_prefix") or "::ffff:ffff:0000:0000" local siit_route = luci.ip.IPv6(siit_prefix .. "/96") -- Find wifi interface local device = dev:formvalue(section) -- -- Generate ULA -- local ula = luci.ip.IPv6("::") for _, prefix in ipairs({ ula_prefix, ula_global, ula_subnet }) do ula = ula:add(luci.ip.IPv6(prefix)) end ula = ula:add(find_ll(uci:get("network", device, "ifname") or device)) -- -- Gateway mode -- -- * wan port is dhcp, lan port is 172.23.1.1/24 -- * siit0 gets a dummy address: 169.254.42.42 -- * wl0 gets an ipv6 address, in this case the fdca:ffee:babe::1:1/64 -- * we do a ::ffff:ffff:0/96 route into siit0, so everything from 6mesh goes into translation. -- * an HNA6 of ::ffff:ffff:0:0/96 announces the mapped 0.0.0.0/0 ipv4 space. -- * MTU on WAN, LAN down to 1400, ipv6 headers are slighly larger. if value == "gateway" then uci:set("network", "wan", "mtu", 1400) -- -- Client mode -- -- * 172.23.2.1/24 on its lan, fdca:ffee:babe::1:2 on wl0 and the usual dummy address on siit0. -- * 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. -- * same route as HNA6 announcement to catch the traffic out of the mesh. -- * Also, MTU on LAN reduced to 1400. else local lan_ip = luci.ip.IPv4( uci:get("network", "lan", "ipaddr"), uci:get("network", "lan", "netmask") ) siit_route = luci.ip.IPv6( siit_prefix .. "/" .. (96 + lan_ip:prefix()) ):add(lan_ip[2]) end -- siit0 interface uci:delete_all("network", "interface", function(s) return ( s.ifname == "siit0" ) end) uci:section("network", "interface", "siit0", { ifname = "siit0", proto = "static", ipaddr = "169.254.42.42", netmask = "255.255.255.0" }) -- siit0 route uci:delete_all("network", "route6", function(s) return siit_route:contains(luci.ip.IPv6(s.target)) end) uci:section("network", "route6", nil, { interface = device, target = siit_route:string() }) -- interface uci:set("network", device, "ip6addr", ula:string()) uci:set("network", "lan", "mtu", 1400) uci:set("olsrd", "general", "IpVersion", 6) uci:foreach("olsrd", "Interface", function(s) if s.interface == device then uci:set("olsrd", s[".name"], "Ip6AddrType", "global") end uci:delete("olsrd", s[".name"], "Ip4Boradcast") end) -- hna6 uci:delete_all("olsrd", "Hna6", function(s) if s.netaddr and s.prefix then return siit_route:contains(luci.ip.IPv6(s.netaddr.."/"..s.prefix)) end end) uci:section("olsrd", "Hna6", nil, { netaddr = siit_route:host():string(), prefix = siit_route:prefix() }) uci:save("network") uci:save("olsrd") end return f