+--[[
+LuCI - Lua Configuration Interface
+
+Copyright 2008 Steven Barth <steven@midlink.org>
+Copyright 2008 Jo-Philipp Wich <xm@leipzig.freifunk.net>
+
+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
projects / project / luci.git / commitdiff