1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
|
----------------------------------------------------------
-- Licensed under the GNU General Public License version 2
-- * Copyright (C) 2009 Adrian C. <anrxc_sysphere_org>
----------------------------------------------------------
-- {{{ Grab environment
local io = { popen = io.popen }
local setmetatable = setmetatable
local string = {
find = string.find,
match = string.match
}
-- }}}
-- Wifi: provides wireless information for a requested interface
module("vicious.wifi")
-- {{{ Wireless widget type
function worker(format, iface)
-- Get data from iwconfig, on distributions where it is executable
-- by users, and /sbin or /usr/sbin is in their path
local f = io.popen("iwconfig " .. iface)
local iw = f:read("*all")
f:close()
-- Setup tables
local winfo = {
["{ssid}"] = "N/A",
["{mode}"] = "N/A",
["{chan}"] = "N/A",
["{rate}"] = "N/A",
["{link}"] = "N/A",
["{sign}"] = "N/A"
}
-- Check if iwconfig wasn't found, can't be executed or the
-- interface is not a wireless one
if iw == nil or string.find(iw, "No such device") then
return winfo
else
-- The output differs from system to system, some stats can
-- be separated by =, and not all drivers report all stats
winfo["{ssid}"] = -- SSID can have almost anything in it
string.match(iw, 'ESSID[=:]"([%w]+[%s]*[%w]*]*)"') or winfo["{ssid}"]
winfo["{mode}"] = -- Modes are simple, but also match the "-" in Ad-Hoc
string.match(iw, "Mode[=:]([%w%-]*)") or winfo["{mode}"]
winfo["{chan}"] = -- Channels are plain digits
string.match(iw, "Channel[=:]([%d]+)") or winfo["{chan}"]
winfo["{rate}"] = -- Bitrate can start with a space and we want to display Mb/s
string.match(iw, "Bit Rate[=:]([%s]?[%d%.]*[%s][%/%a]+)") or winfo["{rate}"]
-- winfo["{link}"] = -- Link quality can contain a slash: 32/100
-- string.match(iw, "Link Quality[=:]([%d]+[%/%d]*)") or winfo["{link}"]
winfo["{link}"] = -- * match only the first number, great data for a progressbar
string.match(iw, "Link Quality[=:]([%d]+)") or winfo["{link}"]
winfo["{sign}"] = -- Signal level can be a negative value, also display decibel notation
string.match(iw, "Signal level[=:]([%-%d]+[%s][%a]*)") or winfo["{sign}"]
end
return winfo
end
-- }}}
setmetatable(_M, { __call = function(_, ...) return worker(...) end })
|
