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#!/usr/bin/lua
require "iwinfo"
function printf(fmt, ...)
print(string.format(fmt, ...))
end
function s(x)
if x == nil then
return "?"
else
return tostring(x)
end
end
function n(x)
if x == nil then
return 0
else
return tonumber(x)
end
end
function print_info(api, dev)
local iw = iwinfo[api]
printf("%-9s Type: %s ESSID: \"%s\"", dev, api, iw.ssid(dev))
printf(" Access Point: %s", iw.bssid(dev))
printf(" Mode: %s Channel: %d (%.3f GHz)",
iw.mode(dev), iw.channel(dev), n(iw.frequency(dev)) / 1000)
printf(" Tx-Power: %s dBm Link Quality: %s/%s",
s(iw.txpower(dev)), s(iw.quality(dev)), s(iw.quality_max(dev)))
printf(" Signal: %s dBm Noise: %s dBm",
s(iw.signal(dev)), s(iw.noise(dev)))
printf(" Bit Rate: %.1f MBit/s",
n(iw.bitrate(dev)) / 1000)
printf(" Encryption: %s",
iw.encryption(dev).description)
print("")
end
function print_scan(api, dev)
local iw = iwinfo[api]
local sr = iw.scanlist(dev)
local si, se
if sr and #sr > 0 then
for si, se in ipairs(sr) do
printf("Cell %02d - Address: %s", si, se.bssid)
printf(" ESSID: \"%s\"",
s(se.ssid))
printf(" Mode: %s Channel: %d",
s(se.mode), n(se.channel))
printf(" Signal: %s dBm Quality: %d/%d",
s(se.signal), n(se.quality), n(se.quality_max))
printf(" Encryption: %s",
s(se.encryption.description))
print("")
end
else
print("No scan results or scanning not possible")
print("")
end
end
function print_txpwrlist(api, dev)
local iw = iwinfo[api]
local pl = iw.txpwrlist(dev)
local cp = n(iw.txpower(dev))
local pe
if pl and #pl > 0 then
for _, pe in ipairs(pl) do
printf("%s%3d dBm (%4d mW)",
(cp == pe.dbm) and "*" or " ",
pe.dbm, pe.mw)
end
else
print("No TX power information available")
end
print("")
end
function print_freqlist(api, dev)
local iw = iwinfo[api]
local fl = iw.freqlist(dev)
local cc = n(iw.channel(dev))
local fe
if fl and #fl > 0 then
for _, fe in ipairs(fl) do
printf("%s %.3f GHz (Channel %d)",
(cc == fe.channel) and "*" or " ",
n(fe.mhz) / 1000, n(fe.channel))
end
else
print("No frequency information available")
end
print("")
end
function print_assoclist(api, dev)
local iw = iwinfo[api]
local al = iw.assoclist(dev)
local ai, ae
if al and next(al) then
for ai, ae in pairs(al) do
printf("%s %s dBm", ai, s(ae.signal))
end
else
print("No client connected or no information available")
end
print("")
end
if #arg ~= 2 then
print("Usage:")
print(" iwinfo <device> info")
print(" iwinfo <device> scan")
print(" iwinfo <device> txpowerlist")
print(" iwinfo <device> freqlist")
print(" iwinfo <device> assoclist")
os.exit(1)
end
local dev = arg[1]
local api = iwinfo.type(dev)
if not api then
print("No such wireless device: " .. dev)
os.exit(1)
end
if arg[2]:match("^i") then
print_info(api, dev)
elseif arg[2]:match("^s") then
print_scan(api, dev)
elseif arg[2]:match("^t") then
print_txpwrlist(api, dev)
elseif arg[2]:match("^f") then
print_freqlist(api, dev)
elseif arg[2]:match("^a") then
print_assoclist(api, dev)
else
print("Unknown command: " .. arg[2])
end
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