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wiki updated
[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 string       = { format = string.format,
17                        gsub   = string.gsub,
18                        match  = string.match }
19
20 local setmetatable = setmetatable
21
22 -- Network infos
23 -- lain.widgets.net
24
25 local function worker(args)
26     local net = { last_t = 0, last_r = 0 }
27
28     function net.get_device()
29         local ws = helpers.read_pipe("ip link show | cut -d' ' -f2,9")
30         ws = ws:match("%w+: UP") or ws:match("ppp%w+: UNKNOWN")
31         if ws ~= nil then
32             return ws:match("(%w+):")
33         else
34             return "network off"
35         end
36     end
37
38     local args = args or {}
39     local timeout = args.timeout or 2
40     local units = args.units or 1024 --kb
41     local notify = args.notify or "on"
42     local screen = args.screen or 1
43     local settings = args.settings or function() end
44
45     iface = args.iface or net.get_device()
46
47     net.widget = wibox.widget.textbox('')
48
49     helpers.set_map(iface, true)
50
51     function update()
52         net_now = {}
53
54         if iface == "" or string.match(iface, "network off")
55         then
56             iface = net.get_device()
57         end
58
59         net_now.carrier = helpers.first_line('/sys/class/net/' .. iface ..
60                                            '/carrier') or "0"
61         net_now.state = helpers.first_line('/sys/class/net/' .. iface ..
62                                            '/operstate') or "down"
63         local now_t = helpers.first_line('/sys/class/net/' .. iface ..
64                                            '/statistics/tx_bytes') or 0
65         local now_r = helpers.first_line('/sys/class/net/' .. iface ..
66                                            '/statistics/rx_bytes') or 0
67
68         net_now.sent = (now_t - net.last_t) / timeout / units
69         net_now.sent = string.gsub(string.format('%.1f', net_now.sent), ",", ".")
70
71         net_now.received = (now_r - net.last_r) / timeout / units
72         net_now.received = string.gsub(string.format('%.1f', net_now.received), ",", ".")
73
74         widget = net.widget
75         settings()
76
77         net.last_t = now_t
78         net.last_r = now_r
79
80         if net_now.carrier ~= "1" and notify == "on"
81         then
82             if helpers.get_map(iface)
83             then
84                 naughty.notify({
85                     title    = iface,
86                     text     = "no carrier",
87                     timeout  = 7,
88                     position = "top_left",
89                     icon     = helpers.icons_dir .. "no_net.png",
90                     fg       = notify_fg or "#FFFFFF",
91                     screen   = screen
92                 })
93                 helpers.set_map(iface, false)
94             end
95         else
96             helpers.set_map(iface, true)
97         end
98     end
99
100     helpers.newtimer(iface, timeout, update)
101
102     return setmetatable(net, { __index = net.widget })
103 end
104
105 return setmetatable({}, { __call = function(_, ...) return worker(...) end })