mirror of https://github.com/lcpz/lain.git
145 lines
5.0 KiB
Lua
145 lines
5.0 KiB
Lua
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--[[
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Licensed under GNU General Public License v2
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* (c) 2013, Luke Bonham
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* (c) 2010-2012, Peter Hofmann
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--]]
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local helpers = require("lain.helpers")
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local naughty = require("naughty")
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local wibox = require("wibox")
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local string = { format = string.format,
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gsub = string.gsub,
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match = string.match }
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local setmetatable = setmetatable
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-- Network infos
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-- lain.widgets.net
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local function worker(args)
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local net = { last_t = 0, last_r = 0, devices = {} }
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function net.get_first_device()
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local ws = helpers.read_pipe("ip link show | cut -d' ' -f2,9")
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ws = ws:match("%w+: UP") or ws:match("ppp%w+: UNKNOWN")
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if ws then return { ws:match("(%w+):") }
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else return {} end
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end
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local args = args or {}
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local timeout = args.timeout or 2
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local units = args.units or 1024 --kb
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local notify = args.notify or "on"
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local screen = args.screen or 1
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local settings = args.settings or function() end
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local iface = args.iface or net.get_first_device()
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net.widget = wibox.widget.textbox('')
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-- Compatibility with old API where iface was a string corresponding to 1 interface
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if type(iface) == "string" then
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iftable = {iface}
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else
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iftable = iface
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end
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-- Mark all devices as initially online/active
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for i, dev in ipairs(iftable) do
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helpers.set_map(dev, true)
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end
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function update()
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-- This check is required to ensure we keep looking for one device if
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-- none is found by net.get_first_device() at startup (i.e. iftable = {})
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if next(iftable) == nil then
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iftable = net.get_first_device()
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end
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-- These are the totals over all specified interfaces
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net_now = {
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-- New api - Current state of requested devices
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devices = {},
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-- Bytes since last iteration
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sent = 0,
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received = 0
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}
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-- Total bytes transfered
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local total_t = 0
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local total_r = 0
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for i, dev in ipairs(iftable) do
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local dev_now = {}
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local dev_before = net.devices[dev] or { last_t = 0, last_r = 0 }
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dev_now.carrier = helpers.first_line(string.format('/sys/class/net/%s/carrier', dev)) or '0'
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dev_now.state = helpers.first_line(string.format('/sys/class/net/%s/operstate', dev)) or 'down'
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local now_t = tonumber(helpers.first_line(string.format('/sys/class/net/%s/statistics/tx_bytes', dev)) or 0)
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local now_r = tonumber(helpers.first_line(string.format('/sys/class/net/%s/statistics/rx_bytes', dev)) or 0)
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dev_now.sent = (now_t - dev_before.last_t) / timeout / units
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dev_now.received = (now_r - dev_before.last_r) / timeout / units
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net_now.sent = net_now.sent + dev_now.sent
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net_now.received = net_now.received + dev_now.received
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dev_now.sent = string.gsub(string.format('%.1f', dev_now.sent), ',', '.')
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dev_now.received = string.gsub(string.format('%.1f', dev_now.received), ',', '.')
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dev_now.last_t = now_t
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dev_now.last_r = now_r
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-- This will become dev_before in the next update/iteration
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net.devices[dev] = dev_now
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total_t = total_t + now_t
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total_r = total_r + now_r
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-- Notify only once when connection is loss
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if string.match(dev_now.carrier, "0") and notify == "on" and helpers.get_map(dev) then
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naughty.notify({
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title = dev,
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text = "no carrier",
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icon = helpers.icons_dir .. "no_net.png",
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screen = screen
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})
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helpers.set_map(dev, false)
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elseif string.match(dev_now.carrier, "1") then
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helpers.set_map(dev, true)
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end
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-- Old api compatibility
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net_now.carrier = dev_now.carrier
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net_now.state = dev_now.state
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-- And new api
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net_now.devices[dev] = dev_now
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-- With the new api new_now.sent and net_now.received will be the
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-- totals across all specified devices
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end
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if total_t ~= net.last_t or total_r ~= net.last_r then
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-- Convert to a string to round the digits after the float point
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net_now.sent = string.gsub(string.format('%.1f', net_now.sent), ',', '.')
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net_now.received = string.gsub(string.format('%.1f', net_now.received), ',', '.')
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net.last_t = total_t
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net.last_r = total_r
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end
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widget = net.widget
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settings()
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end
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helpers.newtimer(iface, timeout, update)
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return setmetatable(net, { __index = net.widget })
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end
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return setmetatable({}, { __call = function(_, ...) return worker(...) end })
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