--[[ 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() -------------------- 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("client", "Client") mode:value("gateway", "Gateway") dev = f:field(ListValue, "device", "WLAN-Gerät") uci:foreach("wireless", "wifi-device", function(section) dev:value(section[".name"]) end) lanip = f:field(Value, "ipaddr", "LAN IP Adresse") lanip.value = "172.23.1.1" lanmsk = f:field(Value, "lanmask", "Lokale LAN Netzmaske") lanmsk.value = "255.255.255.0" gv4msk = f:field(Value, "gv4mask", "Globale LAN Netzmaske") gv4msk.value = "255.255.0.0" -------------------- Control -------------------- LL_PREFIX = luci.ip.IPv6("fe80::/64") -- -- find link-local address -- function find_ll() for _, r in ipairs(luci.sys.net.routes6()) do if LL_PREFIX:contains(r.dest) and r.dest:higher(LL_PREFIX) 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) -- lan interface local lan_net = luci.ip.IPv4( lanip:formvalue(section) or "192.168.1.1", lanmsk:formvalue(section) or "255.255.255.0" ) local gv4_net = luci.ip.IPv4( lanip:formvalue(section) or "192.168.1.1", gv4msk:formvalue(section) or "255.255.0.0" ) -- -- Configure wifi device -- local wifi_device = dev:formvalue(section) local wifi_essid = uci:get("siit", "wifi", "essid") or "6mesh.freifunk.net" local wifi_bssid = uci:get("siit", "wifi", "bssid") or "02:ca:ff:ee:ba:be" local wifi_channel = uci:get("siit", "wifi", "channel") or "1" -- nuke old device definition uci:delete_all("wireless", "wifi-iface", function(s) return s.device == wifi_device end ) uci:delete_all("network", "interface", function(s) return s['.name'] == wifi_device end ) -- create wifi device definition uci:tset("wireless", wifi_device, { disabled = 0, channel = wifi_channel, -- txantenna = 1, -- rxantenna = 1, -- diversity = 0 }) uci:section("wireless", "wifi-iface", nil, { encryption = "none", mode = "adhoc", network = wifi_device, device = wifi_device, ssid = wifi_essid, bssid = wifi_bssid, }) -- -- Determine defaults -- local ula_prefix = uci:get("siit", "ipv6", "ula_prefix") or "fd00::" local ula_global = uci:get("siit", "ipv6", "ula_global") or "00ca:ffee:babe::" -- = Freifunk local ula_subnet = uci:get("siit", "ipv6", "ula_subnet") or "0000:0000:0000:4223::" -- = Berlin local siit_prefix = uci:get("siit", "ipv6", "siit_prefix") or "::ffff:0000:0000" -- Find wifi interface local device = dev:formvalue(section) -- -- Generate ULA -- local ula = luci.ip.IPv6("::/64") for _, prefix in ipairs({ ula_prefix, ula_global, ula_subnet }) do ula = ula:add(luci.ip.IPv6(prefix)) end ula = ula:add(find_ll()) -- -- 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 -- wan mtu uci:set("network", "wan", "mtu", 1400) -- lan settings uci:tset("network", "lan", { mtu = 1400, ipaddr = lan_net:host():string(), netmask = lan_net:mask():string() }) -- use full siit subnet siit_route = luci.ip.IPv6(siit_prefix .. "/96") -- v4 <-> siit route uci:delete_all("network", "route", function(s) return s.interface == "siit0" end) uci:section("network", "route", nil, { interface = "siit0", target = gv4_net:network():string(), netmask = gv4_net:mask():string() }) -- -- 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 -- lan settings uci:tset("network", "lan", { mtu = 1400, ipaddr = lan_net:host():string(), netmask = lan_net:mask():string() }) -- derive siit subnet from lan config siit_route = luci.ip.IPv6( siit_prefix .. "/" .. (96 + lan_net:prefix()) ):add(lan_net[2]) -- ipv4 <-> siit route uci:delete_all("network", "route", function(s) return s.interface == "siit0" end) -- XXX: kind of a catch all, gv4_net would be better -- but does not cover non-local v4 space uci:section("network", "route", nil, { interface = "siit0", target = "0.0.0.0", netmask = "0.0.0.0" }) end -- setup the firewall uci:delete_all("firewall", "zone", function(s) return ( s['.name'] == "siit0" or s.name == "siit0" or s.network == "siit0" or s['.name'] == wifi_device or s.name == wifi_device or s.network == wifi_device ) end) uci:delete_all("firewall", "forwarding", function(s) return ( s.src == wifi_device and s.dest == "siit0" or s.dest == wifi_device and s.src == "siit0" or s.src == "lan" and s.dest == "siit0" or s.dest == "lan" and s.src == "siit0" ) end) uci:section("firewall", "zone", "siit0", { name = "siit0", network = "siit0", input = "ACCEPT", output = "ACCEPT", forward = "ACCEPT" }) uci:section("firewall", "zone", wifi_device, { name = wifi_device, network = wifi_device, input = "ACCEPT", output = "ACCEPT", forward = "ACCEPT" }) uci:section("firewall", "forwarding", nil, { src = wifi_device, dest = "siit0" }) uci:section("firewall", "forwarding", nil, { src = "siit0", dest = wifi_device }) uci:section("firewall", "forwarding", nil, { src = "lan", dest = "siit0" }) uci:section("firewall", "forwarding", nil, { src = "siit0", dest = "lan" }) -- 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 = "siit0", target = siit_route:string() }) -- create wifi network interface uci:section("network", "interface", wifi_device, { proto = "static", mtu = 1400, ip6addr = ula:string() }) -- nuke old olsrd interfaces uci:delete_all("olsrd", "Interface", function(s) return s.interface == wifi_device end) -- configure olsrd interface uci:foreach("olsrd", "olsrd", function(s) uci:set("olsrd", s['.name'], "IpVersion", 6) end) uci:section("olsrd", "Interface", nil, { ignore = 0, interface = wifi_device, Ip6AddrType = "global" }) -- 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() }) -- txtinfo v6 uci:foreach("olsrd", "LoadPlugin", function(s) if s.library == "olsrd_txtinfo.so.0.1" then uci:set("olsrd", s['.name'], "accept", "::1") end end) uci:save("wireless") uci:save("firewall") uci:save("network") uci:save("olsrd") end return f