applications/luci-ffwizard-leipzig/luasrc/tools/ffwizard.lua

   1 --[[
   2 LuCI - Lua Configuration Interface
   3
   4 Copyright 2008 Steven Barth <steven@midlink.org>
   5 Copyright 2008 Jo-Philipp Wich <xm@leipzig.freifunk.net>
   6
   7 Licensed under the Apache License, Version 2.0 (the "License");
   8 you may not use this file except in compliance with the License.
   9 You may obtain a copy of the License at
  10
  11 http://www.apache.org/licenses/LICENSE-2.0
  12
  13 $Id$
  14
  15 ]]--
  16
  17 local uci = require "luci.model.uci"
  18 local util = require "luci.util"
  19 local table = require "table"
  20
  21
  22 module "luci.tools.ffwizard"
  23
  24 -- Deletes all references of a wifi device
  25 function wifi_delete_ifaces(device)
  26         local cursor = uci.cursor()
  27         cursor:delete_all("wireless", "wifi-iface", {device=device})
  28         cursor:save("wireless")
  29 end
  30
  31 -- Deletes a network interface and all occurences of it in firewall zones and dhcp
  32 function network_remove_interface(iface)
  33         local cursor = uci.cursor()
  34
  35         if not cursor:delete("network", iface) then
  36                 return false
  37         end
  38
  39         local aliases = {iface}
  40         cursor:foreach("network", "alias",
  41                 function(section)
  42                         table.insert(aliases, section[".name"])
  43                 end)
  44
  45         -- Delete Aliases and Routes
  46         cursor:delete_all("network", nil, {interface=iface})
  47
  48         -- Delete DHCP sections
  49         cursor:delete_all("dhcp", "dhcp",
  50                  function(section)
  51                         return util.contains(aliases, section.interface)
  52                  end)
  53
  54         -- Remove OLSR sections
  55         cursor:delete_all("olsr", "Interface", {Interface=iface})
  56
  57         -- Remove Splash sections
  58         cursor:delete_all("luci-splash", "iface", {network=iface})
  59
  60         cursor:save("network")
  61         cursor:save("olsr")
  62         cursor:save("dhcp")
  63         cursor:save("luci-splash")
  64 end
  65
  66 -- Creates a firewall zone
  67 function firewall_create_zone(zone, input, output, forward, masq)
  68         local cursor = uci.cursor()
  69         if not firewall_find_zone(zone) then
  70                 local stat = cursor:section("firewall", "zone", nil, {
  71                         input = input,
  72                         output = output,
  73                         forward = forward,
  74                         masq = masq and "1",
  75                         name = zone
  76                 })
  77                 cursor:save("firewall")
  78                 return stat
  79         end
  80 end
  81
  82 -- Adds interface to zone, creates zone on-demand
  83 function firewall_zone_add_interface(name, interface)
  84         local cursor = uci.cursor()
  85         local zone = firewall_find_zone(name)
  86         local net = cursor:get("firewall", zone, "network")
  87         cursor:set("firewall", zone, "network", (net or name .. " ") .. interface)
  88         cursor:save("firewall")
  89 end
  90
  91 -- Removes interface from zone
  92 function firewall_zone_remove_interface(name, interface)
  93         local cursor = uci.cursor()
  94         local zone = firewall_find_zone(name)
  95         if zone then
  96                 local net = cursor:get("firewall", zone, "network")
  97                 local new = remove_list_entry(net, interface)
  98                 if new then
  99                         if #new > 0 then
 100                                 cursor:set("firewall", zone, "network", new)
 101                         else
 102                                 cursor:delete("firewall", zone, "network")
 103                         end
 104                         cursor:save("firewall")
 105                 end
 106         end
 107 end
 108
 109
 110 -- Finds the firewall zone with given name
 111 function firewall_find_zone(name)
 112         local find
 113
 114         uci.cursor():foreach("firewall", "zone",
 115                 function (section)
 116                         if section.name == name then
 117                                 find = section[".name"]
 118                         end
 119                 end)
 120
 121         return find
 122 end
 123
 124
 125
 126 -- Helpers --
 127
 128 -- Removes a listentry, handles real and pseduo lists transparently
 129 function remove_list_entry(value, entry)
 130         if type(value) == "nil" then
 131                 return nil
 132         end
 133
 134         local result = type(value) == "table" and value or util.split(value, " ")
 135         local key = util.contains(result, entry)
 136
 137         while key do
 138                 table.remove(result, key)
 139                 key = util.contains(result, entry)
 140         end
 141
 142         result = type(value) == "table" and result or table.concat(result, " ")
 143         return result ~= value and result
 144 end