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2770 rexy 1 
<?php
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/**
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 * Basic OS Class
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 *
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 * PHP version 5
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 *
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 * @category  PHP
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 * @package   PSI OS class
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 * @author    Michael Cramer <BigMichi1@users.sourceforge.net>
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 * @copyright 2009 phpSysInfo
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 * @license   http://opensource.org/licenses/gpl-2.0.php GNU General Public License version 2, or (at your option) any later version
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 * @version   SVN: $Id: class.OS.inc.php 699 2012-09-15 11:57:13Z namiltd $
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 * @link      http://phpsysinfo.sourceforge.net
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 */
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 /**
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 * Basic OS functions for all OS classes
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 *
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 * @category  PHP
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 * @package   PSI OS class
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 * @author    Michael Cramer <BigMichi1@users.sourceforge.net>
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 * @copyright 2009 phpSysInfo
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 * @license   http://opensource.org/licenses/gpl-2.0.php GNU General Public License version 2, or (at your option) any later version
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 * @version   Release: 3.0
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 * @link      http://phpsysinfo.sourceforge.net
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 */
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abstract class OS implements PSI_Interface_OS
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{
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    /**
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     * object for error handling
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     *
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     * @var PSI_Error
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     */
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    protected $error;
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    /**
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     * block name
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     *
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     * @var string
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     */
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    protected $blockname = false;
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    /**
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     * @var System
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     */
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    protected $sys;
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    /**
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     * build the global Error object
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     */
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    public function __construct($blockname = false)
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    {
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        $this->error = PSI_Error::singleton();
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        $this->sys = new System();
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        $this->blockname = $blockname;
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    }
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    /**
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     * get os specific encoding
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     *
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     * @see PSI_Interface_OS::getEncoding()
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     *
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     * @return string
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     */
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    public function getEncoding()
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    {
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        return PSI_SYSTEM_CODEPAGE;
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    }
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    /**
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     * get os specific language
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     *
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     * @see PSI_Interface_OS::getLanguage()
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     *
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     * @return string
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     */
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    public function getLanguage()
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    {
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        return PSI_SYSTEM_LANG;
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    }
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    /**
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     * get block name
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     *
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     * @see PSI_Interface_OS::getBlockName()
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     *
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     * @return string
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     */
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    public function getBlockName()
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    {
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        return $this->blockname;
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    }
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    /**
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     * Number of Users
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     *
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     * @return void
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     */
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    protected function _users()
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    {
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        if (CommonFunctions::executeProgram('who', '', $strBuf, PSI_DEBUG)) {
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            if (strlen($strBuf) > 0) {
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                $lines = preg_split('/\n/', $strBuf);
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                $this->sys->setUsers(count($lines));
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            }
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        } elseif (CommonFunctions::executeProgram('uptime', '', $buf, PSI_DEBUG) && preg_match("/,\s+(\d+)\s+user[s]?,/", $buf, $ar_buf)) {
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        //} elseif (CommonFunctions::executeProgram('uptime', '', $buf) && preg_match("/,\s+(\d+)\s+user[s]?,\s+load average[s]?:\s+(.*),\s+(.*),\s+(.*)$/", $buf, $ar_buf)) {
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            $this->sys->setUsers($ar_buf[1]);
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        } else {
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            $processlist = glob('/proc/*/cmdline', GLOB_NOSORT);
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            if (is_array($processlist) && (($total = count($processlist)) > 0)) {
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                $count = 0;
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                $buf = "";
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                for ($i = 0; $i < $total; $i++) {
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                    if (CommonFunctions::rfts($processlist[$i], $buf, 0, 4096, false)) {
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                        $name = str_replace(chr(0), ' ', trim($buf));
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                        if (preg_match("/^-/", $name)) {
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                            $count++;
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                        }
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                    }
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                }
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                if ($count > 0) {
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                    $this->sys->setUsers($count);
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                }
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            }
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        }
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    }
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    /**
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     * IP of the Host
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     *
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     * @return void
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     */
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    protected function _ip()
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    {
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        if (PSI_USE_VHOST === true) {
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           if ((CommonFunctions::readenv('SERVER_ADDR', $result) || CommonFunctions::readenv('LOCAL_ADDR', $result)) //is server address defined
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               && !strstr($result, '.') && strstr($result, ':')) { //is IPv6, quick version of preg_match('/\(([[0-9A-Fa-f\:]+)\)/', $result)
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                $dnsrec = dns_get_record($this->sys->getHostname(), DNS_AAAA);
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                if (isset($dnsrec[0]['ipv6'])) { //is DNS IPv6 record
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                    $this->sys->setIp($dnsrec[0]['ipv6']); //from DNS (avoid IPv6 NAT translation)
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                } else {
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                    $this->sys->setIp(preg_replace('/^::ffff:/i', '', $result)); //from SERVER_ADDR or LOCAL_ADDR
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                }
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            } else {
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                $this->sys->setIp(gethostbyname($this->sys->getHostname())); //IPv4 only
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            }
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        } else {
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            if (CommonFunctions::readenv('SERVER_ADDR', $result) || CommonFunctions::readenv('LOCAL_ADDR', $result)) {
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                $this->sys->setIp(preg_replace('/^::ffff:/i', '', $result));
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            } else {
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                $this->sys->setIp(gethostbyname($this->sys->getHostname()));
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            }
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        }
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    }
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    /**
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     * get the filled or unfilled (with default values) System object
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     *
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     * @see PSI_Interface_OS::getSys()
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     *
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     * @return System
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     */
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    final public function getSys()
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    {
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        $this->build();
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        if (!$this->blockname || $this->blockname==='vitals') {
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            $this->_ip();
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        }
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        return $this->sys;
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    }
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}