lain/widget/net.lua

124 lines
4.4 KiB
Lua

--[[
Licensed under GNU General Public License v2
* (c) 2013, Luke Bonham
* (c) 2010-2012, Peter Hofmann
--]]
local helpers = require("lain.helpers")
local naughty = require("naughty")
local wibox = require("wibox")
local string = { format = string.format,
match = string.match }
local setmetatable = setmetatable
-- Network infos
-- lain.widget.net
local function worker(args)
local net = { widget = wibox.widget.textbox() }
net.last_t = 0
net.last_r = 0
net.devices = {}
local args = args or {}
local timeout = args.timeout or 2
local units = args.units or 1024 --kb
local notify = args.notify or "on"
local screen = args.screen or 1
local settings = args.settings or function() end
-- Compatibility with old API where iface was a string corresponding to 1 interface
net.iface = (args.iface and (type(args.iface) == "string" and {args.iface}) or
(type(args.iface) == "table" and args.iface)) or {}
function net.get_device()
helpers.async(string.format("ip link show", device_cmd), function(ws)
ws = ws:match("(%w+): <BROADCAST,MULTICAST,.-UP,LOWER_UP>")
net.iface = ws and { ws } or {}
end)
end
if #net.iface == 0 then net.get_device() end
function update()
-- These are the totals over all specified interfaces
net_now = {
-- New api - Current state of requested devices
devices = {},
-- Bytes since last iteration
sent = 0,
received = 0
}
-- Total bytes transfered
local total_t = 0
local total_r = 0
for i, dev in ipairs(net.iface) do
local dev_now = {}
local dev_before = net.devices[dev] or { last_t = 0, last_r = 0 }
local now_t = tonumber(helpers.first_line(string.format("/sys/class/net/%s/statistics/tx_bytes", dev)) or 0)
local now_r = tonumber(helpers.first_line(string.format("/sys/class/net/%s/statistics/rx_bytes", dev)) or 0)
dev_now.carrier = helpers.first_line(string.format("/sys/class/net/%s/carrier", dev)) or "0"
dev_now.state = helpers.first_line(string.format("/sys/class/net/%s/operstate", dev)) or "down"
dev_now.sent = (now_t - dev_before.last_t) / timeout / units
dev_now.received = (now_r - dev_before.last_r) / timeout / units
net_now.sent = net_now.sent + dev_now.sent
net_now.received = net_now.received + dev_now.received
dev_now.sent = string.format('%.1f', dev_now.sent)
dev_now.received = string.format('%.1f', dev_now.received)
dev_now.last_t = now_t
dev_now.last_r = now_r
-- This will become dev_before in the next update/iteration
net.devices[dev] = dev_now
total_t = total_t + now_t
total_r = total_r + now_r
-- Notify only once when connection is loss
if string.match(dev_now.carrier, "0") and notify == "on" and helpers.get_map(dev) then
naughty.notify({
title = dev,
text = "no carrier",
icon = helpers.icons_dir .. "no_net.png",
screen = screen
})
helpers.set_map(dev, false)
elseif string.match(dev_now.carrier, "1") then
helpers.set_map(dev, true)
end
net_now.carrier = dev_now.carrier
net_now.state = dev_now.state
net_now.devices[dev] = dev_now
-- new_now.sent and net_now.received will be the
-- totals across all specified devices
end
if total_t ~= net.last_t or total_r ~= net.last_r then
net_now.sent = string.format('%.1f', net_now.sent)
net_now.received = string.format('%.1f', net_now.received)
net.last_t = total_t
net.last_r = total_r
end
widget = net.widget
settings()
end
helpers.newtimer("network", timeout, update)
return net
end
return setmetatable({}, { __call = function(_, ...) return worker(...) end })