67 lines
2.5 KiB
Lua
67 lines
2.5 KiB
Lua
---------------------------------------------------
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-- Licensed under the GNU General Public License v2
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-- * (c) 2016, Marius M. <mellich@gmx.net>
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---------------------------------------------------
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-- {{{ Grab environment
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local tonumber = tonumber
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local setmetatable = setmetatable
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local helpers = require("vicious.helpers")
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local io = {
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open = io.open,
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popen = io.popen
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}
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local string = {
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find = string.find,
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match = string.match
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}
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-- }}}
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-- Wifiiw: provides wireless information for a requested interface using iw instead of deprecated iwconfig
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-- vicious.widgets.wifiiw
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local wifiiw_linux = {}
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-- {{{ Wireless widget type
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local function worker(format, warg)
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if not warg then return end
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-- Default values
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local winfo = {}
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-- Get data from iw where available
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local f = io.popen("export PATH=$PATH:/sbin/:/usr/sbin:/usr/local/sbin;" ..
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"iw dev ".. helpers.shellquote(tostring(warg)) .. " link 2>&1;" ..
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"iw dev ".. helpers.shellquote(tostring(warg)) .. " info 2>&1")
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local iwresult = f:read("*all")
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f:close()
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-- iw wasn't found, isn't executable, or non-wireless interface
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if iwresult == nil or string.find(iwresult, "No such device") then
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return winfo
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end
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-- string match is simple in most cases, because iw uses a new line for every info
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winfo["{ssid}"] = -- SSID can have almost anything in it until new line
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string.match(iwresult, "SSID: ([^\n]*)") or "N/A"
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winfo["{mode}"] = -- everything after 'type ' until new line
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string.match(iwresult, "type ([^\n]*)") or "N/A"
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winfo["{chan}"] = -- Channels are plain digits
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tonumber(string.match(iwresult, "channel ([%d]+)") or 0)
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winfo["{rate}"] = -- We don't want to display Mb/s
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tonumber(string.match(iwresult, "tx bitrate: ([%d%.]*)") or 0)
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winfo["{freq}"] = -- Frequency are plain digits
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tonumber(string.match(iwresult, "freq: ([%d]+)") or 0)
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winfo["{sign}"] = -- Signal level can be a negative value, don't display decibel notation
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tonumber(string.match(iwresult, "signal: (%-[%d]+)") or 0)
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winfo["{linp}"] = -- Link Quality using the Windows definition (-50dBm->100%, -100dBm->0%)
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(winfo["{sign}"] ~= 0 and 100 - ((winfo["{sign}"] * -2) - 100) or 0)
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winfo["{txpw}"] = -- TX Power can be a negative value, don't display decibel notation
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tonumber(string.match(iwresult, "txpower ([%-]?[%d]+)") or 0)
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return winfo
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end
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-- }}}
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return setmetatable(wifiiw_linux, { __call = function(_, ...) return worker(...) end })
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