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asyncshell.request: removed unused argument
[etc/awesome.git] / widgets / net.lua
1
2 --[[
3                                                   
4      Licensed under GNU General Public License v2 
5       * (c) 2013,      Luke Bonham                
6       * (c) 2010-2012, Peter Hofmann              
7                                                   
8 --]]
9
10 local helpers      = require("lain.helpers")
11
12 local notify_fg    = require("beautiful").fg_focus
13 local naughty      = require("naughty")
14 local wibox        = require("wibox")
15
16 local io           = { popen  = io.popen }
17 local tostring     = tostring
18 local string       = { format = string.format,
19                        gsub   = string.gsub,
20                        match  = string.match }
21
22 local setmetatable = setmetatable
23
24 -- Network infos
25 -- lain.widgets.net
26 local net = {
27     last_t = 0,
28     last_r = 0
29 }
30
31 function net.get_device()
32     f = io.popen("ip link show | cut -d' ' -f2,9")
33     ws = f:read("*a")
34     f:close()
35     ws = ws:match("%w+: UP") or ws:match("ppp%w+: UNKNOWN")
36     if ws ~= nil then
37         return ws:match("(%w+):")
38     else
39         return "network off"
40     end
41 end
42
43 local function worker(args)
44     local args = args or {}
45     local timeout = args.timeout or 2
46     local units = args.units or 1024 --kb
47     local notify = args.notify or "on"
48     local screen = args.screen or 1
49     local settings = args.settings or function() end
50
51     iface = args.iface or net.get_device()
52
53     net.widget = wibox.widget.textbox('')
54
55     helpers.set_map(iface, true)
56
57     function update()
58         net_now = {}
59
60         if iface == "" or string.match(iface, "network off")
61         then
62             iface = net.get_device()
63         end
64
65         net_now.carrier = helpers.first_line('/sys/class/net/' .. iface ..
66                                            '/carrier') or "0"
67         net_now.state = helpers.first_line('/sys/class/net/' .. iface ..
68                                            '/operstate') or "down"
69         local now_t = helpers.first_line('/sys/class/net/' .. iface ..
70                                            '/statistics/tx_bytes') or 0
71         local now_r = helpers.first_line('/sys/class/net/' .. iface ..
72                                            '/statistics/rx_bytes') or 0
73
74         net_now.sent = tostring((now_t - net.last_t) / timeout / units)
75         net_now.sent = string.gsub(string.format('%.1f', net_now.sent), ",", ".")
76
77         net_now.received = tostring((now_r - net.last_r) / timeout / units)
78         net_now.received = string.gsub(string.format('%.1f', net_now.received), ",", ".")
79
80         widget = net.widget
81         settings()
82
83         net.last_t = now_t
84         net.last_r = now_r
85
86         if net_now.carrier ~= "1" and notify == "on"
87         then
88             if helpers.get_map(iface)
89             then
90                 naughty.notify({
91                     title    = iface,
92                     text     = "no carrier",
93                     timeout  = 7,
94                     position = "top_left",
95                     icon     = helpers.icons_dir .. "no_net.png",
96                     fg       = notify_fg or "#FFFFFF",
97                     screen   = screen
98                 })
99                 helpers.set_map(iface, false)
100             end
101         else
102             helpers.set_map(iface, true)
103         end
104     end
105
106     helpers.newtimer(iface, timeout, update)
107     return net.widget
108 end
109
110 return setmetatable(net, { __call = function(_, ...) return worker(...) end })