mirror of https://github.com/lcpz/lain.git
123 lines
4.4 KiB
Lua
123 lines
4.4 KiB
Lua
--[[
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Licensed under GNU General Public License v2
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* (c) 2013, Luca CPZ
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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 = string
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-- Network infos
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-- lain.widget.net
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local function factory(args)
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args = args or {}
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local net = { widget = args.widget or wibox.widget.textbox(), devices = {} }
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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 wifi_state = args.wifi_state or "off"
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local eth_state = args.eth_state or "off"
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local screen = args.screen or 1
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local format = args.format or "%.1f"
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local settings = args.settings or function() end
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-- Compatibility with old API where iface was a string corresponding to 1 interface
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net.iface = (args.iface and (type(args.iface) == "string" and {args.iface}) or
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(type(args.iface) == "table" and args.iface)) or {}
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function net.get_devices()
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net.iface = {} -- reset at every call
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helpers.line_callback("ip link", function(line)
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net.iface[#net.iface + 1] = not string.match(line, "LOOPBACK") and string.match(line, "(%w+): <") or nil
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end)
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end
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if #net.iface == 0 then net.get_devices() end
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function net.update()
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-- These are the totals over all specified interfaces
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net_now = {
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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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for _, dev in ipairs(net.iface) 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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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.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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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.format(format, dev_now.sent)
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dev_now.received = string.format(format, 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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if wifi_state == "on" and helpers.first_line(string.format("/sys/class/net/%s/uevent", dev)) == "DEVTYPE=wlan" then
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dev_now.wifi = true
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if string.match(dev_now.carrier, "1") then
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dev_now.signal = tonumber(string.match(helpers.lines_from("/proc/net/wireless")[3], "(%-%d+%.)")) or nil
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end
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else
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dev_now.wifi = false
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end
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if eth_state == "on" and helpers.first_line(string.format("/sys/class/net/%s/uevent", dev)) ~= "DEVTYPE=wlan" then
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dev_now.ethernet = true
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else
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dev_now.ethernet = false
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end
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net.devices[dev] = dev_now
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-- Notify only once when connection is lost
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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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net_now.carrier = dev_now.carrier
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net_now.state = dev_now.state
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net_now.devices[dev] = dev_now
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-- net_now.sent and net_now.received will be
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-- the totals across all specified devices
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end
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net_now.sent = string.format(format, net_now.sent)
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net_now.received = string.format(format, net_now.received)
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widget = net.widget
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settings()
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end
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helpers.newtimer("network", timeout, net.update)
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return net
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end
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return factory
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