1 files changed, 109 insertions, 0 deletions
diff --git a/lain/widgets/net.lua b/lain/widgets/net.lua
new file mode 100644
index 0000000..2585ad4
--- /dev/null
+++ b/lain/widgets/net.lua
@@ -0,0 +1,109 @@
+
+--[[
+                                                  
+     Licensed under GNU General Public License v2 
+      * (c) 2013,      Luke Bonham                
+      * (c) 2010-2012, Peter Hofmann              
+                                                  
+--]]
+
+local helpers      = require("lain.helpers")
+
+local notify_fg    = require("beautiful").fg_focus
+local naughty      = require("naughty")
+local wibox        = require("wibox")
+
+local io           = { popen  = io.popen }
+local string       = { format = string.format,
+                       gsub   = string.gsub,
+                       match  = string.match }
+
+local setmetatable = setmetatable
+
+-- Network infos
+-- lain.widgets.net
+local net = {
+    last_t = 0,
+    last_r = 0
+}
+
+function net.get_device()
+    f = io.popen("ip link show | cut -d' ' -f2,9")
+    ws = f:read("*a")
+    f:close()
+    ws = ws:match("%w+: UP") or ws:match("ppp%w+: UNKNOWN")
+    if ws ~= nil then
+        return ws:match("(%w+):")
+    else
+        return "network off"
+    end
+end
+
+local function worker(args)
+    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
+
+    iface = args.iface or net.get_device()
+
+    net.widget = wibox.widget.textbox('')
+
+    helpers.set_map(iface, true)
+
+    function update()
+        net_now = {}
+
+        if iface == "" or string.match(iface, "network off")
+        then
+            iface = net.get_device()
+        end
+
+        net_now.carrier = helpers.first_line('/sys/class/net/' .. iface ..
+                                           '/carrier') or "0"
+        net_now.state = helpers.first_line('/sys/class/net/' .. iface ..
+                                           '/operstate') or "down"
+        local now_t = helpers.first_line('/sys/class/net/' .. iface ..
+                                           '/statistics/tx_bytes') or 0
+        local now_r = helpers.first_line('/sys/class/net/' .. iface ..
+                                           '/statistics/rx_bytes') or 0
+
+        net_now.sent = (now_t - net.last_t) / timeout / units
+        net_now.sent = string.gsub(string.format('%.1f', net_now.sent), ",", ".")
+
+        net_now.received = (now_r - net.last_r) / timeout / units
+        net_now.received = string.gsub(string.format('%.1f', net_now.received), ",", ".")
+
+        widget = net.widget
+        settings()
+
+        net.last_t = now_t
+        net.last_r = now_r
+
+        if net_now.carrier ~= "1" and notify == "on"
+        then
+            if helpers.get_map(iface)
+            then
+                naughty.notify({
+                    title    = iface,
+                    text     = "no carrier",
+                    timeout  = 7,
+                    position = "top_left",
+                    icon     = helpers.icons_dir .. "no_net.png",
+                    fg       = notify_fg or "#FFFFFF",
+                    screen   = screen
+                })
+                helpers.set_map(iface, false)
+            end
+        else
+            helpers.set_map(iface, true)
+        end
+    end
+
+    helpers.newtimer(iface, timeout, update)
+    return net.widget
+end
+
+return setmetatable(net, { __call = function(_, ...) return worker(...) end })