applications/luci-ahcp/luasrc/controller/ahcp.lua

   1 --[[
   2 LuCI - Lua Configuration Interface
   3
   4 Copyright 2011 Jo-Philipp Wich <xm@subsignal.org>
   5
   6 Licensed under the Apache License, Version 2.0 (the "License");
   7 you may not use this file except in compliance with the License.
   8 You may obtain a copy of the License at
   9
  10         http://www.apache.org/licenses/LICENSE-2.0
  11
  12 $Id: init.lua 6731 2011-01-14 19:44:03Z soma $
  13 ]]--
  14
  15 module("luci.controller.ahcp", package.seeall)
  16
  17 function index()
  18         if not nixio.fs.access("/etc/config/ahcpd") then
  19                 return
  20         end
  21
  22         require("luci.i18n")
  23         luci.i18n.loadc("ahcp")
  24
  25         entry({"admin", "network", "ahcpd"}, cbi("ahcp"), luci.i18n.translate("AHCP Server"), 90).i18n = "ahcp"
  26         entry({"admin", "network", "ahcpd", "status"}, call("ahcp_status"))
  27 end
  28
  29 function ahcp_status()
  30         local nfs = require "nixio.fs"
  31         local uci = require "luci.model.uci".cursor()
  32         local lsd = uci:get_first("ahcpd", "ahcpd", "lease_dir") or "/var/lib/leases"
  33         local idf = uci:get_first("ahcpd", "ahcpd", "id_file")   or "/var/lib/ahcpd-unique-id"
  34
  35         local rv = {
  36                 uid    = "00:00:00:00:00:00:00:00",
  37                 leases = { }
  38         }
  39
  40         idf = nfs.readfile(idf)
  41         if idf and #idf == 8 then
  42                 rv.uid = "%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X" %{ idf:byte(1, 8) }
  43         end
  44
  45         local itr = nfs.dir(lsd)
  46         if itr then
  47                 local addr
  48                 for addr in itr do
  49                         if addr:match("^%d+%.%d+%.%d+%.%d+$") then
  50                                 local s = nfs.stat(lsd .. "/" .. addr)
  51                                 rv.leases[#rv.leases+1] = {
  52                                         addr = addr,
  53                                         age  = s and (os.time() - s.mtime) or 0
  54                                 }
  55                         end
  56                 end
  57         end
  58
  59         table.sort(rv.leases, function(a, b) return a.age < b.age end)
  60
  61         luci.http.prepare_content("application/json")
  62         luci.http.write_json(rv)
  63 end