contrib/package/iwinfo/src/iwinfo.lua

   1 #!/usr/bin/lua
   2
   3 require "iwinfo"
   4
   5 function printf(fmt, ...)
   6         print(string.format(fmt, ...))
   7 end
   8
   9 function s(x)
  10         if x == nil then
  11                 return "?"
  12         else
  13                 return tostring(x)
  14         end
  15 end
  16
  17 function n(x)
  18         if x == nil then
  19                 return 0
  20         else
  21                 return tonumber(x)
  22         end
  23 end
  24
  25 function print_info(api, dev)
  26         local iw = iwinfo[api]
  27
  28         printf("%-9s Type: %s  ESSID: \"%s\"", dev, api, iw.ssid(dev))
  29         printf("          Access Point: %s", iw.bssid(dev))
  30
  31         printf("          Mode: %s  Channel: %d (%.3f GHz)",
  32                 iw.mode(dev), iw.channel(dev), n(iw.frequency(dev)) / 1000)
  33
  34         printf("          Tx-Power: %s dBm  Link Quality: %s/%s",
  35                 s(iw.txpower(dev)), s(iw.quality(dev)), s(iw.quality_max(dev)))
  36
  37         printf("          Signal: %s dBm  Noise: %s dBm",
  38                 s(iw.signal(dev)), s(iw.noise(dev)))
  39
  40         printf("          Bit Rate: %.1f MBit/s",
  41                 n(iw.bitrate(dev)) / 1000)
  42
  43         printf("          Encryption: %s",
  44                 iw.encryption(dev).description)
  45
  46         print("")
  47 end
  48
  49 function print_scan(api, dev)
  50         local iw = iwinfo[api]
  51         local sr = iw.scanlist(dev)
  52         local si, se
  53
  54         if sr and #sr > 0 then
  55                 for si, se in ipairs(sr) do
  56                         printf("Cell %02d - Address: %s", si, se.bssid)
  57                         printf("          ESSID: \"%s\"",
  58                                 s(se.ssid))
  59
  60                         printf("          Mode: %s  Channel: %d",
  61                                 s(se.mode), n(se.channel))
  62
  63                         printf("          Signal: %s dBm  Quality: %d/%d",
  64                                 s(se.signal), n(se.quality), n(se.quality_max))
  65
  66                         printf("          Encryption: %s",
  67                                 s(se.encryption.description))
  68
  69                         print("")
  70                 end
  71         else
  72                 print("No scan results or scanning not possible")
  73                 print("")
  74         end
  75 end
  76
  77 function print_txpwrlist(api, dev)
  78         local iw = iwinfo[api]
  79         local pl = iw.txpwrlist(dev)
  80         local cp = n(iw.txpower(dev))
  81         local pe
  82
  83         if pl and #pl > 0 then
  84                 for _, pe in ipairs(pl) do
  85                         printf("%s%3d dBm (%4d mW)",
  86                                 (cp == pe.dbm) and "*" or " ",
  87                                 pe.dbm, pe.mw)
  88                 end
  89         else
  90                 print("No TX power information available")
  91         end
  92
  93         print("")
  94 end
  95
  96 function print_freqlist(api, dev)
  97         local iw = iwinfo[api]
  98         local fl = iw.freqlist(dev)
  99         local cc = n(iw.channel(dev))
 100         local fe
 101
 102         if fl and #fl > 0 then
 103                 for _, fe in ipairs(fl) do
 104                         printf("%s %.3f GHz (Channel %d)",
 105                                 (cc == fe.channel) and "*" or " ",
 106                                 n(fe.mhz) / 1000, n(fe.channel))
 107                 end
 108         else
 109                 print("No frequency information available")
 110         end
 111
 112         print("")
 113 end
 114
 115 function print_assoclist(api, dev)
 116         local iw = iwinfo[api]
 117         local al = iw.assoclist(dev)
 118         local ai, ae
 119
 120         if al and next(al) then
 121                 for ai, ae in pairs(al) do
 122                         printf("%s  %s dBm", ai, s(ae.signal))
 123                 end
 124         else
 125                 print("No client connected or no information available")
 126         end
 127
 128         print("")
 129 end
 130
 131
 132 if #arg ~= 2 then
 133         print("Usage:")
 134         print(" iwinfo <device> info")
 135         print(" iwinfo <device> scan")
 136         print(" iwinfo <device> txpowerlist")
 137         print(" iwinfo <device> freqlist")
 138         print(" iwinfo <device> assoclist")
 139         os.exit(1)
 140 end
 141
 142 local dev = arg[1]
 143 local api = iwinfo.type(dev)
 144 if not api then
 145         print("No such wireless device: " .. dev)
 146         os.exit(1)
 147 end
 148
 149
 150 if arg[2]:match("^i") then
 151         print_info(api, dev)
 152
 153 elseif arg[2]:match("^s") then
 154         print_scan(api, dev)
 155
 156 elseif arg[2]:match("^t") then
 157         print_txpwrlist(api, dev)
 158
 159 elseif arg[2]:match("^f") then
 160         print_freqlist(api, dev)
 161
 162 elseif arg[2]:match("^a") then
 163         print_assoclist(api, dev)
 164
 165 else
 166         print("Unknown command: " .. arg[2])
 167 end