applications/luci-asterisk/luasrc/asterisk.lua

   1 --[[
   2 LuCI - Lua Configuration Interface
   3 Asterisk PBX interface library
   4
   5 Copyright 2009 Jo-Philipp Wich <xm@subsignal.org>
   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 module("luci.asterisk", package.seeall)
  18
  19 local _io  = require("io")
  20 local sys  = require("luci.sys")
  21 local util = require("luci.util")
  22
  23 AST_BIN   = "/usr/sbin/asterisk"
  24 AST_FLAGS = "-r -x"
  25
  26
  27 --- LuCI Asterisk io interface
  28 -- Handles low level io.
  29 -- @type        module
  30 io = luci.util.class()
  31
  32 --- Execute command and return output
  33 -- @param command       String containing the command to execute
  34 -- @return                      String containing the command output
  35 function io.exec(command)
  36         local fh = _io.popen( "%s %s %q" %{ AST_BIN, AST_FLAGS, command }, "r" )
  37         assert(fh, "Failed to invoke asterisk")
  38
  39         local buffer = fh:read("*a")
  40         fh:close()
  41         return buffer
  42 end
  43
  44 --- Execute command and invoke given callback for each readed line
  45 -- @param command       String containing the command to execute
  46 -- @param callback      Function to call back for each line
  47 -- @return                      Always true
  48 function io.execl(command, callback)
  49         local ln
  50         local fh = _io.popen( "%s %s %q" %{ AST_BIN, AST_FLAGS, command }, "r" )
  51         assert(fh, "Failed to invoke asterisk")
  52
  53         repeat
  54                 ln = fh:read("*l")
  55                 callback(ln)
  56         until not ln
  57
  58         fh:close()
  59         return true
  60 end
  61
  62 --- Execute command and return an iterator that returns one line per invokation
  63 -- @param command       String containing the command to execute
  64 -- @return                      Iterator function
  65 function io.execi(command)
  66         local fh = _io.popen( "%s %s %q" %{ AST_BIN, AST_FLAGS, command }, "r" )
  67         assert(fh, "Failed to invoke asterisk")
  68
  69         return function()
  70                 local ln = fh:read("*l")
  71                 if not ln then fh:close() end
  72                 return ln
  73         end
  74 end
  75
  76
  77 --- LuCI Asterisk - core status
  78 core = luci.util.class()
  79
  80 --- Retrive version string.
  81 -- @return      String containing the reported asterisk version
  82 function core.version(self)
  83         local version = io.exec("core show version")
  84         return version:gsub(" *\n", "")
  85 end
  86
  87
  88 --- LuCI Asterisk - SIP information.
  89 -- @type module
  90 sip = luci.util.class()
  91
  92 --- Get a list of known SIP peers
  93 -- @return              Table containing each SIP peer
  94 function sip.peers(self)
  95         local head  = false
  96         local peers = { }
  97
  98         for line in io.execi("sip show peers") do
  99                 if not head then
 100                         head = true
 101                 elseif not line:match(" sip peers ") then
 102                         local online, delay, id, uid
 103                         local name, host, dyn, nat, acl, port, status =
 104                                 line:match("(.-) +(.-) +([D ])   ([N ])   (.)  (%d+) +(.+)")
 105
 106                         if host == '(Unspecified)' then host = nil end
 107                         if port == '0' then port = nil else port = tonumber(port) end
 108
 109                         dyn = ( dyn == 'D' and true or false )
 110                         nat = ( nat == 'N' and true or false )
 111                         acl = ( acl ~= ' ' and true or false )
 112
 113                         online, delay = status:match("(OK) %((%d+) ms%)")
 114
 115                         if online == 'OK' then
 116                                 online = true
 117                                 delay  = tonumber(delay)
 118                         elseif status ~= 'Unmonitored' then
 119                                 online = false
 120                                 delay  = 0
 121                         else
 122                                 online = nil
 123                                 delay  = 0
 124                         end
 125
 126                         id, uid = name:match("(.+)/(.+)")
 127
 128                         if not ( id and uid ) then
 129                                 id  = name .. "..."
 130                                 uid = nil
 131                         end
 132
 133                         peers[#peers+1] = {
 134                                 online  = online,
 135                                 delay   = delay,
 136                                 name    = id,
 137                                 user    = uid,
 138                                 dynamic = dyn,
 139                                 nat     = nat,
 140                                 acl     = acl,
 141                                 host    = host,
 142                                 port    = port
 143                         }
 144                 end
 145         end
 146
 147         return peers
 148 end
 149
 150 --- Get informations of given SIP peer
 151 -- @param peer  String containing the name of the SIP peer
 152 function sip.peer(peer)
 153         local info = { }
 154         local keys = { }
 155
 156         for line in io.execi("sip show peer " .. peer) do
 157                 if #line > 0 then
 158                         local key, val = line:match("(.-) *: +(.*)")
 159                         if key and val then
 160
 161                                 key = key:gsub("^ +",""):gsub(" +$", "")
 162                                 val = val:gsub("^ +",""):gsub(" +$", "")
 163
 164                                 if key == "* Name" then
 165                                         key = "Name"
 166                                 elseif key == "Addr->IP" then
 167                                         info.address, info.port = val:match("(.+) Port (.+)")
 168                                         info.port = tonumber(info.port)
 169                                 elseif key == "Status" then
 170                                         info.online, info.delay = val:match("(OK) %((%d+) ms%)")
 171                                         if info.online == 'OK' then
 172                                                 info.online = true
 173                                                 info.delay  = tonumber(info.delay)
 174                                         elseif status ~= 'Unmonitored' then
 175                                                 info.online = false
 176                                                 info.delay  = 0
 177                                         else
 178                                                 info.online = nil
 179                                                 info.delay  = 0
 180                                         end
 181                                 end
 182
 183                                 if val == 'Yes' or val == 'yes' or val == '<Set>' then
 184                                         val = true
 185                                 elseif val == 'No' or val == 'no' then
 186                                         val = false
 187                                 elseif val == '<Not set>' or val == '(none)' then
 188                                         val = nil
 189                                 end
 190
 191                                 keys[#keys+1] = key
 192                                 info[key] = val
 193                         end
 194                 end
 195         end
 196
 197         return info, keys
 198 end