From 9970343fe5c8226f25234addc6b80836c092fe1f Mon Sep 17 00:00:00 2001
From: ShevAbam <shevabam@gmail.com>
Date: Tue, 7 Jul 2015 15:57:41 +0200
Subject: General : cleaning and optimizing CSS General : responsive design
 General : reload button now spins when you reload block General : update
 jQuery plugin Knob to 1.2.11 General : optimizing security (config file
 esm.config.json is now in the conf/ folder with an htaccess) CPU : retrieves
 correctly CPU frequency for Raspberry Pi CPU : add CPU temperature (+ option
 to enable/disable) System : little correction for getting distro name Swap :
 fix if swap is disabled Services status : adds protocol TCP or UDP for
 checking service status Services status : new option to hide port number (see
 show_port in services section)

---
 libs/Utils/Misc.php | 164 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 164 insertions(+)
 create mode 100644 libs/Utils/Misc.php

(limited to 'libs/Utils/Misc.php')

diff --git a/libs/Utils/Misc.php b/libs/Utils/Misc.php
new file mode 100644
index 0000000..a86312b
--- /dev/null
+++ b/libs/Utils/Misc.php
@@ -0,0 +1,164 @@
+<?php
+
+class Misc
+{
+    /**
+     * Returns human size
+     *
+     * @param  float $filesize   File size
+     * @param  int   $precision  Number of decimals
+     * @return string            Human size
+     */
+    public static function getSize($filesize, $precision = 2)
+    {
+        $units = array('', 'K', 'M', 'G', 'T', 'P', 'E', 'Z', 'Y');
+
+        foreach ($units as $idUnit => $unit)
+        {
+            if ($filesize > 1024)
+                $filesize /= 1024;
+            else
+                break;
+        }
+        
+        return round($filesize, $precision).' '.$units[$idUnit].'B';
+    }
+    
+    
+    /**
+     * Returns hostname
+     *
+     * @return  string  Hostname
+     */
+    public static function getHostname()
+    {
+        return php_uname('n');
+    }
+
+
+    /**
+     * Returns CPU cores number
+     * 
+     * @return  int  Number of cores
+     */
+    public static function getCpuCoresNumber()
+    {
+        if (!($num_cores = shell_exec('/bin/grep -c ^processor /proc/cpuinfo')))
+        {
+            if (!($num_cores = trim(shell_exec('/usr/bin/nproc'))))
+            {
+                $num_cores = 1;
+            }
+        }
+
+        if ((int)$num_cores <= 0)
+            $num_cores = 1;
+
+        return (int)$num_cores;
+    }
+
+
+    /**
+     * Returns server IP
+     *
+     * @return string Server local IP
+     */
+    public static function getLanIp()
+    {
+        return $_SERVER['SERVER_ADDR'];
+    }
+
+
+    /**
+     * Returns a command that exists in the system among $cmds
+     *
+     * @param  array  $cmds             List of commands
+     * @param  string $args             List of arguments (optional)
+     * @param  bool   $returnWithArgs   If true, returns command with the arguments
+     * @return string                   Command
+     */
+    public static function whichCommand($cmds, $args = '', $returnWithArgs = true)
+    {
+        $return = '';
+
+        foreach ($cmds as $cmd)
+        {
+            if (trim(shell_exec($cmd.$args)) != '')
+            {
+                $return = $cmd;
+                
+                if ($returnWithArgs)
+                    $return .= $args;
+
+                break;
+            }
+        }
+
+        return $return;
+    }
+
+
+    /**
+     * Allows to pluralize a word based on a number
+     * Ex : echo 'mot'.Misc::pluralize(5); ==> prints mots
+     * Ex : echo 'cheva'.Misc::pluralize(5, 'ux', 'l'); ==> prints chevaux
+     * Ex : echo 'cheva'.Misc::pluralize(1, 'ux', 'l'); ==> prints cheval
+     * 
+     * @param  int       $nb         Number
+     * @param  string    $plural     String for plural word
+     * @param  string    $singular   String for singular word
+     * @return string                String pluralized
+     */
+    public static function pluralize($nb, $plural = 's', $singular = '')
+    {
+        return $nb > 1 ? $plural : $singular;
+    }
+
+
+    /**
+     * Checks if a port is open (TCP or UPD)
+     *
+     * @param  string   $host       Host to check
+     * @param  int      $port       Port number
+     * @param  string   $protocol   tcp or udp
+     * @param  integer  $timeout    Timeout
+     * @return bool                 True if the port is open else false
+     */
+    public static function scanPort($host, $port, $protocol = 'tcp', $timeout = 3)
+    {
+        if ($protocol == 'tcp')
+        {
+            $handle = @fsockopen($host, $port, $errno, $errstr, $timeout);
+
+            if ($handle)
+                return true;
+            else
+                return false;
+        }
+        elseif ($protocol == 'udp')
+        {
+            $handle = @fsockopen('udp://'.$host, $port, $errno, $errstr, $timeout);
+
+            socket_set_timeout($handle, $timeout);
+
+            $write = fwrite($handle, 'x00');
+
+            $startTime = time();
+
+            $header = fread($handle, 1);
+
+            $endTime = time();
+
+            $timeDiff = $endTime - $startTime; 
+            
+            fclose($handle);
+
+            if ($timeDiff >= $timeout)
+                return true;
+            else
+                return false;
+        }
+
+        return false;
+    }
+}
\ No newline at end of file
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