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         local function hwmode()
  30                 local m = iw.hwmodelist(dev)
  31                 if m then
  32                         local s = "802.11"
  33                         if m.a then s = s.."a" end
  34                         if m.b then s = s.."b" end
  35                         if m.g then s = s.."g" end
  36                         if m.n then s = s.."n" end
  37                         return s
  38                 else
  39                         return "?"
  40                 end
  41         end
  42
  43         printf("%-9s ESSID: \"%s\"",
  44                 dev, s(iw.ssid(dev)))
  45
  46         printf("          Access Point: %s",
  47                 s(iw.bssid(dev)))
  48
  49         printf("          Type: %s  HW Mode(s): %s",
  50                 api, hwmode())
  51
  52         printf("          Mode: %s  Channel: %d (%.3f GHz)",
  53                 s(iw.mode(dev)), n(iw.channel(dev)), n(iw.frequency(dev)) / 1000)
  54
  55         printf("          Tx-Power: %s dBm  Link Quality: %s/%s",
  56                 s(iw.txpower(dev)), s(iw.quality(dev)), s(iw.quality_max(dev)))
  57
  58         printf("          Signal: %s dBm  Noise: %s dBm",
  59                 s(iw.signal(dev)), s(iw.noise(dev)))
  60
  61         printf("          Bit Rate: %.1f MBit/s",
  62                 n(iw.bitrate(dev)) / 1000)
  63
  64         printf("          Encryption: %s",
  65                 s(enc and enc.description or "None"))
  66
  67         printf("          Supports VAPs: %s",
  68                 iw.mbssid_support(dev) and "yes" or "no")
  69
  70         print("")
  71 end
  72
  73 function print_scan(api, dev)
  74         local iw = iwinfo[api]
  75         local sr = iw.scanlist(dev)
  76         local si, se
  77
  78         if sr and #sr > 0 then
  79                 for si, se in ipairs(sr) do
  80                         printf("Cell %02d - Address: %s", si, se.bssid)
  81                         printf("          ESSID: \"%s\"",
  82                                 s(se.ssid))
  83
  84                         printf("          Mode: %s  Channel: %d",
  85                                 s(se.mode), n(se.channel))
  86
  87                         printf("          Signal: %s dBm  Quality: %d/%d",
  88                                 s(se.signal), n(se.quality), n(se.quality_max))
  89
  90                         printf("          Encryption: %s",
  91                                 s(se.encryption.description or "None"))
  92
  93                         print("")
  94                 end
  95         else
  96                 print("No scan results or scanning not possible")
  97                 print("")
  98         end
  99 end
 100
 101 function print_txpwrlist(api, dev)
 102         local iw = iwinfo[api]
 103         local pl = iw.txpwrlist(dev)
 104         local cp = n(iw.txpower(dev))
 105         local pe
 106
 107         if pl and #pl > 0 then
 108                 for _, pe in ipairs(pl) do
 109                         printf("%s%3d dBm (%4d mW)",
 110                                 (cp == pe.dbm) and "*" or " ",
 111                                 n(pe.dbm), n(pe.mw))
 112                 end
 113         else
 114                 print("No TX power information available")
 115         end
 116
 117         print("")
 118 end
 119
 120 function print_freqlist(api, dev)
 121         local iw = iwinfo[api]
 122         local fl = iw.freqlist(dev)
 123         local cc = n(iw.channel(dev))
 124         local fe
 125
 126         if fl and #fl > 0 then
 127                 for _, fe in ipairs(fl) do
 128                         printf("%s %.3f GHz (Channel %d)%s",
 129                                 (cc == fe.channel) and "*" or " ",
 130                                 n(fe.mhz) / 1000, n(fe.channel),
 131                                 fe.restricted and " [restricted]" or "")
 132                 end
 133         else
 134                 print("No frequency information available")
 135         end
 136
 137         print("")
 138 end
 139
 140 function print_assoclist(api, dev)
 141         local iw = iwinfo[api]
 142         local al = iw.assoclist(dev)
 143         local ns = iw.noise(dev)
 144         local ai, ae
 145
 146         if al and next(al) then
 147                 for ai, ae in pairs(al) do
 148                         printf("%s  %s dBm / %d dBm (SNR %d)",
 149                                 ai, s(ae.signal), ns, n(ae.signal) - ns)
 150                 end
 151         else
 152                 print("No client connected or no information available")
 153         end
 154
 155         print("")
 156 end
 157
 158 function print_countrylist(api, dev)
 159         local iw = iwinfo[api]
 160         local cl = iw.countrylist(dev)
 161         local cc = iw.country(dev)
 162         local ce
 163
 164         if cl and #cl > 0 then
 165                 for _, ce in ipairs(cl) do
 166                         printf("%s %4s  %s",
 167                                 (cc == ce.alpha2) and "*" or " ",
 168                                 ce.ccode, ce.name)
 169                 end
 170         else
 171                 print("No country code information available")
 172         end
 173
 174         print("")
 175 end
 176
 177
 178 if #arg ~= 2 then
 179         print("Usage:")
 180         print(" iwinfo <device> info")
 181         print(" iwinfo <device> scan")
 182         print(" iwinfo <device> txpowerlist")
 183         print(" iwinfo <device> freqlist")
 184         print(" iwinfo <device> assoclist")
 185         print(" iwinfo <device> countrylist")
 186         os.exit(1)
 187 end
 188
 189 local dev = arg[1]
 190 local api = iwinfo.type(dev)
 191 if not api then
 192         print("No such wireless device: " .. dev)
 193         os.exit(1)
 194 end
 195
 196
 197 if arg[2]:match("^i") then
 198         print_info(api, dev)
 199
 200 elseif arg[2]:match("^s") then
 201         print_scan(api, dev)
 202
 203 elseif arg[2]:match("^t") then
 204         print_txpwrlist(api, dev)
 205
 206 elseif arg[2]:match("^f") then
 207         print_freqlist(api, dev)
 208
 209 elseif arg[2]:match("^a") then
 210         print_assoclist(api, dev)
 211
 212 elseif arg[2]:match("^c") then
 213         print_countrylist(api, dev)
 214
 215 else
 216         print("Unknown command: " .. arg[2])
 217 end