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         local enc = iw.encryption(dev)
  28
  29         printf("%-9s Type: %s  ESSID: \"%s\"",
  30                 dev, api, s(iw.ssid(dev)))
  31
  32         printf("          Access Point: %s",
  33                 s(iw.bssid(dev)))
  34
  35         printf("          Mode: %s  Channel: %d (%.3f GHz)",
  36                 iw.mode(dev), n(iw.channel(dev)), n(iw.frequency(dev)) / 1000)
  37
  38         printf("          Tx-Power: %s dBm  Link Quality: %s/%s",
  39                 s(iw.txpower(dev)), s(iw.quality(dev)), s(iw.quality_max(dev)))
  40
  41         printf("          Signal: %s dBm  Noise: %s dBm",
  42                 s(iw.signal(dev)), s(iw.noise(dev)))
  43
  44         printf("          Bit Rate: %.1f MBit/s",
  45                 n(iw.bitrate(dev)) / 1000)
  46
  47         printf("          Encryption: %s",
  48                 s(enc and enc.description))
  49
  50         print("")
  51 end
  52
  53 function print_scan(api, dev)
  54         local iw = iwinfo[api]
  55         local sr = iw.scanlist(dev)
  56         local si, se
  57
  58         if sr and #sr > 0 then
  59                 for si, se in ipairs(sr) do
  60                         printf("Cell %02d - Address: %s", si, se.bssid)
  61                         printf("          ESSID: \"%s\"",
  62                                 s(se.ssid))
  63
  64                         printf("          Mode: %s  Channel: %d",
  65                                 s(se.mode), n(se.channel))
  66
  67                         printf("          Signal: %s dBm  Quality: %d/%d",
  68                                 s(se.signal), n(se.quality), n(se.quality_max))
  69
  70                         printf("          Encryption: %s",
  71                                 s(se.encryption.description))
  72
  73                         print("")
  74                 end
  75         else
  76                 print("No scan results or scanning not possible")
  77                 print("")
  78         end
  79 end
  80
  81 function print_txpwrlist(api, dev)
  82         local iw = iwinfo[api]
  83         local pl = iw.txpwrlist(dev)
  84         local cp = n(iw.txpower(dev))
  85         local pe
  86
  87         if pl and #pl > 0 then
  88                 for _, pe in ipairs(pl) do
  89                         printf("%s%3d dBm (%4d mW)",
  90                                 (cp == pe.dbm) and "*" or " ",
  91                                 n(pe.dbm), n(pe.mw))
  92                 end
  93         else
  94                 print("No TX power information available")
  95         end
  96
  97         print("")
  98 end
  99
 100 function print_freqlist(api, dev)
 101         local iw = iwinfo[api]
 102         local fl = iw.freqlist(dev)
 103         local cc = n(iw.channel(dev))
 104         local fe
 105
 106         if fl and #fl > 0 then
 107                 for _, fe in ipairs(fl) do
 108                         printf("%s %.3f GHz (Channel %d)",
 109                                 (cc == fe.channel) and "*" or " ",
 110                                 n(fe.mhz) / 1000, n(fe.channel))
 111                 end
 112         else
 113                 print("No frequency information available")
 114         end
 115
 116         print("")
 117 end
 118
 119 function print_assoclist(api, dev)
 120         local iw = iwinfo[api]
 121         local al = iw.assoclist(dev)
 122         local ai, ae
 123
 124         if al and next(al) then
 125                 for ai, ae in pairs(al) do
 126                         printf("%s  %s dBm", ai, s(ae.signal))
 127                 end
 128         else
 129                 print("No client connected or no information available")
 130         end
 131
 132         print("")
 133 end
 134
 135
 136 if #arg ~= 2 then
 137         print("Usage:")
 138         print(" iwinfo <device> info")
 139         print(" iwinfo <device> scan")
 140         print(" iwinfo <device> txpowerlist")
 141         print(" iwinfo <device> freqlist")
 142         print(" iwinfo <device> assoclist")
 143         os.exit(1)
 144 end
 145
 146 local dev = arg[1]
 147 local api = iwinfo.type(dev)
 148 if not api then
 149         print("No such wireless device: " .. dev)
 150         os.exit(1)
 151 end
 152
 153
 154 if arg[2]:match("^i") then
 155         print_info(api, dev)
 156
 157 elseif arg[2]:match("^s") then
 158         print_scan(api, dev)
 159
 160 elseif arg[2]:match("^t") then
 161         print_txpwrlist(api, dev)
 162
 163 elseif arg[2]:match("^f") then
 164         print_freqlist(api, dev)
 165
 166 elseif arg[2]:match("^a") then
 167         print_assoclist(api, dev)
 168
 169 else
 170         print("Unknown command: " .. arg[2])
 171 end