--- /dev/null
+
+--[[
+
+ 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 }
+
+-- Network infos
+-- lain.widget.net
+
+local function factory(args)
+ local net = { widget = wibox.widget.textbox(), 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 net.update()
+ -- These are the totals over all specified interfaces
+ net_now = {
+ devices = {},
+ -- Bytes since last iteration
+ sent = 0,
+ received = 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
+
+ net.devices[dev] = dev_now
+
+ -- 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
+
+ net_now.sent = string.format("%.1f", net_now.sent)
+ net_now.received = string.format("%.1f", net_now.received)
+
+ widget = net.widget
+ settings()
+ end
+
+ helpers.newtimer("network", timeout, net.update)
+
+ return net
+end
+
+return factory