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----------------------------------------------------------
-- Licensed under the GNU General Public License version 2
-- * Copyright (C) 2009 Adrian C. <anrxc_sysphere_org>
-- * Derived from Wicked, copyright of Lucas de Vries
----------------------------------------------------------
-- {{{ Grab environment
local tonumber = tonumber
local os = { time = os.time }
local io = { open = io.open }
local setmetatable = setmetatable
local math = { floor = math.floor }
-- }}}
-- Net: provides usage statistics for all network interfaces
module("vicious.net")
-- Initialise function tables
local nets = {}
-- {{{ Net widget type
local function worker(format)
-- Get /proc/net/dev
local f = io.open("/proc/net/dev")
local args = {}
for line in f:lines() do
-- Match wmaster0 as well as rt0 (multiple leading spaces)
if line:match("^[%s]?[%s]?[%s]?[%s]?[%w]+:") then
name = line:match("^[%s]?[%s]?[%s]?[%s]?([%w]+):")
-- Received bytes, first value after the name
recv = tonumber(line:match(":[%s]*([%d]+)"))
-- Transmited bytes, 7 fields from end of the line
send = tonumber(line:match("([%d]+)%s+%d+%s+%d+%s+%d+%s+%d+%s+%d+%s+%d+%s+%d$"))
args["{"..name.." rx_b}"] = math.floor(recv*10)/10
args["{"..name.." tx_b}"] = math.floor(send*10)/10
args["{"..name.." rx_kb}"] = math.floor(recv/1024*10)/10
args["{"..name.." tx_kb}"] = math.floor(send/1024*10)/10
args["{"..name.." rx_mb}"] = math.floor(recv/1024/1024*10)/10
args["{"..name.." tx_mb}"] = math.floor(send/1024/1024*10)/10
args["{"..name.." rx_gb}"] = math.floor(recv/1024/1024/1024*10)/10
args["{"..name.." tx_gb}"] = math.floor(send/1024/1024/1024*10)/10
if nets[name] == nil then
-- Default values on the first run
nets[name] = {}
args["{"..name.." down}"] = "n/a"
args["{"..name.." up}"] = "n/a"
args["{"..name.." down_b}"] = 0
args["{"..name.." up_b}"] = 0
args["{"..name.." down_kb}"] = 0
args["{"..name.." up_kb}"] = 0
args["{"..name.." down_mb}"] = 0
args["{"..name.." up_mb}"] = 0
args["{"..name.." down_gb}"] = 0
args["{"..name.." up_gb}"] = 0
nets[name].time = os.time()
else
-- Net stats are absolute, substract our last reading
interval = os.time() - nets[name].time
nets[name].time = os.time()
down = (recv - nets[name][1])/interval
up = (send - nets[name][2])/interval
args["{"..name.." down_b}"] = math.floor(down*10)/10
args["{"..name.." up_b}"] = math.floor(up*10)/10
args["{"..name.." down_kb}"] = math.floor(down/1024*10)/10
args["{"..name.." up_kb}"] = math.floor(up/1024*10)/10
args["{"..name.." down_mb}"] = math.floor(down/1024/1024*10)/10
args["{"..name.." up_mb}"] = math.floor(up/1024/1024*10)/10
args["{"..name.." down_gb}"] = math.floor(down/1024/1024/1024*10)/10
args["{"..name.." up_gb}"] = math.floor(up/1024/1024/1024*10)/10
end
-- Store totals
nets[name][1] = recv
nets[name][2] = send
end
end
f:close()
return args
end
-- }}}
setmetatable(_M, { __call = function(_, ...) return worker(...) end })
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