]> git.madduck.net Git - etc/awesome.git/blobdiff - widgets/net.lua

madduck's git repository

Every one of the projects in this repository is available at the canonical URL git://git.madduck.net/madduck/pub/<projectpath> — see each project's metadata for the exact URL.

All patches and comments are welcome. Please squash your changes to logical commits before using git-format-patch and git-send-email to patches@git.madduck.net. If you'd read over the Git project's submission guidelines and adhered to them, I'd be especially grateful.

SSH access, as well as push access can be individually arranged.

If you use my repositories frequently, consider adding the following snippet to ~/.gitconfig and using the third clone URL listed for each project:

[url "git://git.madduck.net/madduck/"]
  insteadOf = madduck:

Merge pull request #223 from monokles/bat-perc-fix
[etc/awesome.git] / widgets / net.lua
index 2bfd375c337deb3f7b97fb211425ad07a8b32ab8..18831685d1a11c73aab9f6ab757e7c54e2e7fd35 100644 (file)
 --]]
 
 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 tostring     = tostring
 local string       = { format = string.format,
-                       gsub   = string.gsub }
+                       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")
-    if ws ~= nil then
-        return ws:gsub(": UP", "")
-    else
-        return "network off"
-    end
-end
 
 local function worker(args)
-    local args = args or {}
-    local timeout = args.timeout or 2
-    local iface = args.iface or net.get_device()
-    local units = args.units or 1024 --kb
-    local notify = args.notify or "on"
+    local net = { last_t = 0, last_r = 0, devices = {} }
+
+    function net.get_first_device()
+        local ws = helpers.read_pipe("ip link show | cut -d' ' -f2,9")
+        ws = ws:match("%w+: UP") or ws:match("ppp%w+: UNKNOWN")
+        if ws then return { ws:match("(%w+):") }
+        else return {} end
+    end
+
+    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
+    local iface    = args.iface or net.get_first_device()
 
     net.widget = wibox.widget.textbox('')
 
-    helpers.set_map(iface, true)
+    -- Compatibility with old API where iface was a string corresponding to 1 interface
+    if type(iface) == "string" then
+        iftable = {iface}
+    else
+        iftable = iface
+    end
+
+    -- Mark all devices as initially online/active
+    for i, dev in ipairs(iftable) do
+        helpers.set_map(dev, true)
+    end
 
     function update()
-        net_now = {}
+        -- This check is required to ensure we keep looking for one device if
+        -- none is found by net.get_first_device() at startup (i.e. iftable = {})
+        if next(iftable) == nil then
+            iftable = net.get_first_device()
+        end
 
-        if iface == "" then iface = net.get_device() end
+        -- 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
+        }
 
-        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
+        -- Total bytes transfered
+        local total_t = 0
+        local total_r = 0
 
-        net_now.sent = tostring((now_t - net.last_t) / timeout / units)
-        net_now.sent = string.gsub(string.format('%.1f', net_now.sent), ",", ".")
+        for i, dev in ipairs(iftable) do
+            local dev_now = {}
+            local dev_before = net.devices[dev] or { last_t = 0, last_r = 0 }
 
-        net_now.received = tostring((now_r - net.last_r) / timeout / units)
-        net_now.received = string.gsub(string.format('%.1f', net_now.received), ",", ".")
+            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'
 
-        widget = net.widget
-        settings()
+            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)
 
-        net.last_t = now_t
-        net.last_r = now_r
+            dev_now.sent     = (now_t - dev_before.last_t) / timeout / units
+            dev_now.received = (now_r - dev_before.last_r) / timeout / units
 
-        if net_now.carrier ~= "1" and notify == "on"
-        then
-            if helpers.get_map(iface)
-            then
+            net_now.sent     = net_now.sent     + dev_now.sent
+            net_now.received = net_now.received + dev_now.received
+
+            dev_now.sent     = string.gsub(string.format('%.1f', dev_now.sent), ',', '.')
+            dev_now.received = string.gsub(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    = iface,
+                    title    = dev,
                     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)
+                helpers.set_map(dev, false)
+            elseif string.match(dev_now.carrier, "1") then
+                helpers.set_map(dev, true)
             end
-        else
-            helpers.set_map(iface, true)
+
+            -- Old api compatibility
+            net_now.carrier      = dev_now.carrier
+            net_now.state        = dev_now.state
+            -- And new api
+            net_now.devices[dev] = dev_now
+            -- With the new api 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
+            -- Convert to a string to round the digits after the float point
+            net_now.sent     = string.gsub(string.format('%.1f', net_now.sent), ',', '.')
+            net_now.received = string.gsub(string.format('%.1f', net_now.received), ',', '.')
+
+            net.last_t = total_t
+            net.last_r = total_r
+        end
+
+        widget = net.widget
+        settings()
     end
 
     helpers.newtimer(iface, timeout, update)
-    return net.widget
+
+    return setmetatable(net, { __index = net.widget })
 end
 
-return setmetatable(net, { __call = function(_, ...) return worker(...) end })
+return setmetatable({}, { __call = function(_, ...) return worker(...) end })