494 lines
13 KiB
Lua
494 lines
13 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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local tools = require "luci.tools.ffwizard"
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local util = require "luci.util"
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local sys = require "luci.sys"
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local ip = require "luci.ip"
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local function mksubnet(community, meship)
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local subnet_prefix = tonumber(uci:get("freifunk", community, "splash_prefix")) or 27
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local pool_network = uci:get("freifunk", community, "splash_network") or "10.104.0.0/16"
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local pool = luci.ip.IPv4(pool_network)
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if pool then
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local hosts_per_subnet = 2^(32 - subnet_prefix)
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local number_of_subnets = (2^pool:prefix())/hosts_per_subnet
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local seed1, seed2 = meship:match("(%d+)%.(%d+)$")
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math.randomseed(seed1 * seed2)
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local subnet = pool:add(hosts_per_subnet * math.random(number_of_subnets))
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local subnet_ipaddr = subnet:network(subnet_prefix):add(1):string()
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local subnet_netmask = subnet:mask(subnet_prefix):string()
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return subnet_ipaddr, subnet_netmask
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end
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end
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-------------------- View --------------------
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f = SimpleForm("ffwizward", "Freifunkassistent",
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"Dieser Assistent unterstüzt bei der Einrichtung des Routers für das Freifunknetz.")
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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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main = f:field(Flag, "wifi", "Freifunkzugang einrichten")
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net = f:field(Value, "net", "Freifunk Community", "Mesh Netzbereich")
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net.rmempty = true
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net:depends("wifi", "1")
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uci:foreach("freifunk", "community", function(s)
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net:value(s[".name"], "%s (%s)" % {s.name, s.mesh_network or "?"})
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end)
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function net.cfgvalue(self, section)
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return uci:get("freifunk", "wizard", "net")
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end
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function net.write(self, section, value)
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uci:set("freifunk", "wizard", "net", value)
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uci:save("freifunk")
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end
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meship = f:field(Value, "meship", "Mesh IP Adresse", "Netzweit eindeutige Identifikation")
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meship.rmempty = true
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meship:depends("wifi", "1")
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function meship.cfgvalue(self, section)
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return uci:get("freifunk", "wizard", "meship")
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end
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function meship.write(self, section, value)
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uci:set("freifunk", "wizard", "meship", value)
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uci:save("freifunk")
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end
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function meship.validate(self, value)
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local x = ip.IPv4(value)
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return ( x and x:prefix() == 32 ) and x:string() or ""
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end
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client = f:field(Flag, "client", "WLAN-DHCP anbieten")
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client:depends("wifi", "1")
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client.rmempty = false
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function client.cfgvalue(self, section)
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return uci:get("freifunk", "wizard", "dhcp_splash") or "0"
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end
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olsr = f:field(Flag, "olsr", "OLSR einrichten")
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olsr.rmempty = true
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lat = f:field(Value, "lat", "Latitude")
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lat:depends("olsr", "1")
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function lat.cfgvalue(self, section)
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return uci:get("freifunk", "wizard", "latitude")
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end
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function lat.write(self, section, value)
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uci:set("freifunk", "wizard", "latitude", value)
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uci:save("freifunk")
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end
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lon = f:field(Value, "lon", "Longitude")
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lon:depends("olsr", "1")
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function lon.cfgvalue(self, section)
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return uci:get("freifunk", "wizard", "longitude")
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end
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function lon.write(self, section, value)
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uci:set("freifunk", "wizard", "longitude", value)
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uci:save("freifunk")
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end
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share = f:field(Flag, "sharenet", "Eigenen Internetzugang freigeben")
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share.rmempty = true
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wansec = f:field(Flag, "wansec", "WAN-Zugriff auf Gateway beschränken")
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wansec.rmempty = false
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wansec:depends("sharenet", "1")
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function wansec.cfgvalue(self, section)
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return uci:get("freifunk", "wizard", "wan_security")
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end
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function wansec.write(self, section, value)
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uci:set("freifunk", "wizard", "wan_security", value)
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uci:save("freifunk")
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end
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-------------------- Control --------------------
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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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local function _strip_internals(tbl)
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tbl = tbl or {}
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for k, v in pairs(tbl) do
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if k:sub(1, 1) == "." then
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tbl[k] = nil
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end
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end
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return tbl
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end
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-- Configure Freifunk checked
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function main.write(self, section, value)
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if value == "0" then
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return
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end
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local device = dev:formvalue(section)
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local node_ip, external
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-- Collect IP-Address
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local community = net:formvalue(section)
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-- Invalidate fields
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if not community then
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net.tag_missing[section] = true
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else
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external = uci:get("freifunk", community, "external") or ""
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network = ip.IPv4(uci:get("freifunk", community, "mesh_network") or "104.0.0.0/8")
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node_ip = meship:formvalue(section) and ip.IPv4(meship:formvalue(section))
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if not node_ip or not network or not network:contains(node_ip) then
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meship.tag_missing[section] = true
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node_ip = nil
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end
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end
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if not node_ip then return end
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-- Cleanup
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tools.wifi_delete_ifaces(device)
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tools.network_remove_interface(device)
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tools.firewall_zone_remove_interface("freifunk", device)
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-- Tune community settings
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if community and uci:get("freifunk", community) then
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uci:tset("freifunk", "community", uci:get_all("freifunk", community))
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end
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-- Tune wifi device
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local devconfig = uci:get_all("freifunk", "wifi_device")
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util.update(devconfig, uci:get_all(external, "wifi_device") or {})
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uci:tset("wireless", device, devconfig)
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-- Create wifi iface
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local ifconfig = uci:get_all("freifunk", "wifi_iface")
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util.update(ifconfig, uci:get_all(external, "wifi_iface") or {})
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ifconfig.device = device
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ifconfig.network = device
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ifconfig.ssid = uci:get("freifunk", community, "ssid")
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uci:section("wireless", "wifi-iface", nil, ifconfig)
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-- Save wifi
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uci:save("wireless")
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-- Create firewall zone and add default rules (first time)
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local newzone = tools.firewall_create_zone("freifunk", "REJECT", "ACCEPT", "REJECT", true)
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if newzone then
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uci:foreach("freifunk", "fw_forwarding", function(section)
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uci:section("firewall", "forwarding", nil, section)
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end)
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uci:foreach(external, "fw_forwarding", function(section)
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uci:section("firewall", "forwarding", nil, section)
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end)
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uci:foreach("freifunk", "fw_rule", function(section)
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uci:section("firewall", "rule", nil, section)
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end)
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uci:foreach(external, "fw_rule", function(section)
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uci:section("firewall", "rule", nil, section)
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end)
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end
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-- Enforce firewall include
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local has_include = false
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uci:foreach("firewall", "include",
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function(section)
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if section.path == "/etc/firewall.freifunk" then
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has_include = true
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end
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end)
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if not has_include then
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uci:section("firewall", "include", nil,
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{ path = "/etc/firewall.freifunk" })
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end
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-- Allow state: invalid packets
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uci:foreach("firewall", "defaults",
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function(section)
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uci:set("firewall", section[".name"], "drop_invalid", "0")
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end)
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-- Prepare advanced config
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local has_advanced = false
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uci:foreach("firewall", "advanced",
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function(section) has_advanced = true end)
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if not has_advanced then
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uci:section("firewall", "advanced", nil,
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{ tcp_ecn = "0", ip_conntrack_max = "8192", tcp_westwood = "1" })
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end
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uci:save("firewall")
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-- Create network interface
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local netconfig = uci:get_all("freifunk", "interface")
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util.update(netconfig, uci:get_all(external, "interface") or {})
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netconfig.proto = "static"
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netconfig.ipaddr = node_ip:string()
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uci:section("network", "interface", device, netconfig)
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uci:save("network")
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tools.firewall_zone_add_interface("freifunk", device)
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local new_hostname = node_ip:string():gsub("%.", "-")
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local old_hostname = sys.hostname()
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uci:foreach("system", "system",
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function(s)
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-- Make crond silent
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uci:set("system", s['.name'], "cronloglevel", "10")
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-- Set hostname
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if old_hostname == "OpenWrt" or old_hostname:match("^%d+-%d+-%d+-%d+$") then
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uci:set("system", s['.name'], "hostname", new_hostname)
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sys.hostname(new_hostname)
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end
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end)
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uci:save("system")
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end
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function olsr.write(self, section, value)
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if value == "0" then
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return
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end
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local device = dev:formvalue(section)
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local community = net:formvalue(section)
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local external = community and uci:get("freifunk", community, "external") or ""
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local latval = tonumber(lat:formvalue(section))
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local lonval = tonumber(lon:formvalue(section))
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-- Delete old interface
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uci:delete_all("olsrd", "Interface", {interface=device})
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-- Write new interface
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local olsrbase = uci:get_all("freifunk", "olsr_interface")
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util.update(olsrbase, uci:get_all(external, "olsr_interface") or {})
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olsrbase.interface = device
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olsrbase.ignore = "0"
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uci:section("olsrd", "Interface", nil, olsrbase)
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-- Delete old watchdog settings
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uci:delete_all("olsrd", "LoadPlugin", {library="olsrd_watchdog.so.0.1"})
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-- Write new watchdog settings
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uci:section("olsrd", "LoadPlugin", nil, {
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library = "olsrd_watchdog.so.0.1",
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file = "/var/run/olsrd.watchdog",
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interval = "30"
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})
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-- Delete old nameservice settings
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uci:delete_all("olsrd", "LoadPlugin", {library="olsrd_nameservice.so.0.3"})
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-- Write new nameservice settings
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uci:section("olsrd", "LoadPlugin", nil, {
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library = "olsrd_nameservice.so.0.3",
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suffix = ".olsr",
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hosts_file = "/var/etc/hosts.olsr",
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latlon_file = "/var/run/latlon.js",
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lat = latval and string.format("%.15f", latval) or "",
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lon = lonval and string.format("%.15f", lonval) or ""
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})
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-- Save latlon to system too
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if latval and lonval then
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uci:foreach("system", "system", function(s)
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uci:set("system", s[".name"], "latlon",
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string.format("%.15f %.15f", latval, lonval))
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end)
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else
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uci:foreach("system", "system", function(s)
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uci:delete("system", s[".name"], "latlon")
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end)
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end
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-- Import hosts
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uci:foreach("dhcp", "dnsmasq", function(s)
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uci:set("dhcp", s[".name"], "addnhosts", "/var/etc/hosts.olsr")
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end)
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-- Make sure that OLSR is enabled
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sys.exec("/etc/init.d/olsrd enable")
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uci:save("olsrd")
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uci:save("dhcp")
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end
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function share.write(self, section, value)
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uci:delete_all("firewall", "forwarding", {src="freifunk", dest="wan"})
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uci:delete_all("olsrd", "LoadPlugin", {library="olsrd_dyn_gw_plain.so.0.4"})
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uci:foreach("firewall", "zone",
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function(s)
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if s.name == "wan" then
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uci:delete("firewall", s['.name'], "local_restrict")
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return false
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end
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end)
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if value == "1" then
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uci:section("firewall", "forwarding", nil, {src="freifunk", dest="wan"})
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uci:section("olsrd", "LoadPlugin", nil, {library="olsrd_dyn_gw_plain.so.0.4"})
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if wansec:formvalue(section) == "1" then
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uci:foreach("firewall", "zone",
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function(s)
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if s.name == "wan" then
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uci:set("firewall", s['.name'], "local_restrict", "1")
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return false
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end
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end)
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end
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end
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uci:save("firewall")
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uci:save("olsrd")
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uci:save("system")
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end
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function client.write(self, section, value)
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if value == "0" then
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uci:delete("freifunk", "wizard", "dhcp_splash")
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uci:save("freifunk")
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return
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end
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local device = dev:formvalue(section)
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-- Collect IP-Address
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local node_ip = meship:formvalue(section)
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if not node_ip then return end
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local community = net:formvalue(section)
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local external = community and uci:get("freifunk", community, "external") or ""
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local splash_ip, splash_mask = mksubnet(community, node_ip)
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-- Delete old alias
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uci:delete("network", device .. "dhcp")
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-- Create alias
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local aliasbase = uci:get_all("freifunk", "alias")
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util.update(aliasbase, uci:get_all(external, "alias") or {})
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aliasbase.interface = device
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aliasbase.ipaddr = splash_ip
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aliasbase.netmask = splash_mask
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aliasbase.proto = "static"
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uci:section("network", "alias", device .. "dhcp", aliasbase)
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uci:save("network")
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-- Create dhcp
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local dhcpbase = uci:get_all("freifunk", "dhcp")
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util.update(dhcpbase, uci:get_all(external, "dhcp") or {})
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dhcpbase.interface = device .. "dhcp"
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dhcpbase.start = dhcpbeg
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dhcpbase.limit = limit
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dhcpbase.force = 1
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uci:section("dhcp", "dhcp", device .. "dhcp", dhcpbase)
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uci:save("dhcp")
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uci:delete_all("firewall", "rule", {
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src="freifunk",
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proto="udp",
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dest_port="53"
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})
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uci:section("firewall", "rule", nil, {
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src="freifunk",
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proto="udp",
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dest_port="53",
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target="ACCEPT"
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})
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uci:delete_all("firewall", "rule", {
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src="freifunk",
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proto="udp",
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src_port="68",
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dest_port="67"
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})
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uci:section("firewall", "rule", nil, {
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src="freifunk",
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proto="udp",
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src_port="68",
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dest_port="67",
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target="ACCEPT"
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})
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uci:delete_all("firewall", "rule", {
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src="freifunk",
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proto="tcp",
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dest_port="8082",
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})
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uci:section("firewall", "rule", nil, {
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src="freifunk",
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proto="tcp",
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dest_port="8082",
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target="ACCEPT"
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})
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uci:save("firewall")
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-- Delete old splash
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uci:delete_all("luci_splash", "iface", {network=device.."dhcp", zone="freifunk"})
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-- Register splash
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uci:section("luci_splash", "iface", nil, {network=device.."dhcp", zone="freifunk"})
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uci:save("luci_splash")
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-- Make sure that luci_splash is enabled
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sys.exec("/etc/init.d/luci_splash enable")
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-- Remember state
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uci:set("freifunk", "wizard", "dhcp_splash", "1")
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uci:save("freifunk")
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end
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return f
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