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Diffstat (limited to 'wifi.lua')
-rw-r--r-- | wifi.lua | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/wifi.lua b/wifi.lua new file mode 100644 index 0000000..35289dd --- /dev/null +++ b/wifi.lua @@ -0,0 +1,62 @@ +---------------------------------------------------------- +-- Licensed under the GNU General Public License version 2 +-- * Copyright (C) 2009 Adrian C. <anrxc_sysphere_org> +---------------------------------------------------------- + +-- {{{ Grab environment +local io = { popen = io.popen } +local string = { + find = string.find, + match = string.match +} +-- }}} + + +-- Wifi: provides wireless information for a requested interface +module("vicious.wifi") + + +-- {{{ Wireless widget type +function worker(format, iface) + -- Get data from iwconfig, on distributions where it is executable + -- by users, and /sbin or /usr/sbin is in their path + local f = io.popen("iwconfig " .. iface) + local iw = f:read("*all") + f:close() + + -- Setup tables + local winfo = { + ["{ssid}"] = "N/A", + ["{mode}"] = "N/A", + ["{chan}"] = "N/A", + ["{rate}"] = "N/A", + ["{link}"] = "N/A", + ["{sign}"] = "N/A" + } + + -- Check if iwconfig wasn't found, can't be executed or the + -- interface is not a wireless one + if iw == nil or string.find(iw, "No such device") then + return winfo + else + -- The output differs from system to system, some stats can + -- be separated by =, and not all drivers report all stats + winfo["{ssid}"] = -- SSID can have almost anything in it + string.match(iw, 'ESSID[=:]"([%w]+[%s]*[%w]*]*)"') or winfo["{ssid}"] + winfo["{mode}"] = -- Modes are simple, but also match the "-" in Ad-Hoc + string.match(iw, "Mode[=:]([%w%-]*)") or winfo["{mode}"] + winfo["{chan}"] = -- Channels are plain digits + string.match(iw, "Channel[=:]([%d]+)") or winfo["{chan}"] + winfo["{rate}"] = -- Bitrate can start with a space and we want to display Mb/s + string.match(iw, "Bit Rate[=:]([%s]?[%d%.]*[%s][%/%a]+)") or winfo["{rate}"] +-- winfo["{link}"] = -- Link quality can contain a slash: 32/100 +-- string.match(iw, "Link Quality[=:]([%d]+[%/%d]*)") or winfo["{link}"] + winfo["{link}"] = -- * match only the first number, great data for a progressbar + string.match(iw, "Link Quality[=:]([%d]+)") or winfo["{link}"] + winfo["{sign}"] = -- Signal level can be a negative value, also display decibel notation + string.match(iw, "Signal level[=:]([%-%d]+[%s][%a]*)") or winfo["{sign}"] + end + + return winfo +end +-- }}} |