And wifi tool using 'wpa_cli', i.e 'wpa_supplicant'

contrib/README

@@ -83,6 +83,12 @@ vicious.contrib.rss
 vicious.contrib.sensors
   -
 
+vicious.contrib.wpa
+  - the 'wpa_cli' cmd should be at '/usr/bin/wpa_cli'
+  - Using the wpa_supplicant tool to show your wifi status
+  - takes the interface as an argument, i.e "wlan0" or "wlan1"
+  - $1 returns the ssid your wireless lan is connecting 
+  - $2 returns the quality of your wireless lan
 
 Usage examples
 --------------

contrib/wpa.lua

@@ -0,0 +1,48 @@
+---------------------------------------------------
+-- Licensed under the GNU General Public License v2
+--  * (c) 2012, jinleileiking. <jinleileiking@gmail.com>
+---------------------------------------------------
+
+-- {{{ Grab environment
+local tonumber = tonumber
+local math = { ceil = math.ceil }
+local setmetatable = setmetatable
+local helpers = require("vicious.helpers")
+local io = {
+    open = io.open,
+    popen = io.popen
+}
+local string = {
+    find = string.find,
+    match = string.match
+}
+-- }}}
+
+
+-- Wifi: provides wireless information for a requested interface
+module("vicious.contrib.wpa")
+
+
+-- {{{ Wireless widget type
+local function worker(format, warg)
+    if not warg then return end
+
+    local wpa_cmd = "/usr/bin/wpa_cli -i" .. warg ..  " status 2>&1"
+    local f = io.popen(wpa_cmd)
+    local output = f:read("*all")
+    f:close()
+
+    bssid = string.match(output, 'bssid=([%d:]+)')
+    ssid = string.match(output, 'ssid=([%a]+)')
+
+    local wpa_cmd = "/usr/bin/wpa_cli -i" .. warg ..  " bss " .. bssid .. " 2>&1"
+    local f = io.popen(wpa_cmd)
+    local output = f:read("*all")
+
+    qual = string.match(output, 'qual=([%d]+)')
+
+    return {ssid, qual}
+end
+-- }}}
+
+setmetatable(_M, { __call = function(_, ...) return worker(...) end })

widgets/cpufreq.lua

@@ -29,13 +29,20 @@ local function worker(format, warg)
     }
     -- Default voltage values
     local voltage = { v  = "N/A", mv = "N/A" }
+    local freqmhz = "N/A"
+    local freqghz = "N/A"
 
 
     -- Get the current frequency
     local freq = tonumber(cpufreq.scaling_cur_freq)
     -- Calculate MHz and GHz
-    local freqmhz = freq / 1000
-    local freqghz = freqmhz / 1000
+
+    if freq then
+        freqmhz = freq / 1000
+        freqghz = freqmhz / 1000
+    end
+
+
 
     -- Get the current voltage
     if cpufreq.scaling_voltages then
@@ -49,6 +56,8 @@ local function worker(format, warg)
     -- Represent the governor as a symbol
     governor = governor_state[governor] or governor
 
+    if governor == nil then governor = "N/A" end
+
     return {freqmhz, freqghz, voltage.mv, voltage.v, governor}
 end
 -- }}}