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<?php
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/**
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 * Nut 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_UPS
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 * @author    Artem Volk <artvolk@mail.ru>
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 * @author    Anders Häggström <hagge@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.nut.inc.php 661 2012-08-27 11:26:39Z namiltd $
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 * @link      http://phpsysinfo.sourceforge.net
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 */
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 /**
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 * getting ups information from upsc program
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 *
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 * @category  PHP
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 * @package   PSI_UPS
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 * @author    Artem Volk <artvolk@mail.ru>
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 * @author    Anders Häggström <hagge@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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class Nut extends UPS
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{
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    /**
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     * internal storage for all gathered data
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     *
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     * @var array
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     */
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    private $_output = array();
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    /**
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     * get all information from all configured ups and store output in internal array
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     */
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    public function __construct()
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    {
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        parent::__construct();
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        if (defined('PSI_UPS_NUT_LIST') && is_string(PSI_UPS_NUT_LIST)) {
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            if (preg_match(ARRAY_EXP, PSI_UPS_NUT_LIST)) {
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                $upses = eval(PSI_UPS_NUT_LIST);
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            } else {
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                $upses = array(PSI_UPS_NUT_LIST);
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            }
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            foreach ($upses as $ups) {
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                CommonFunctions::executeProgram('upsc', '-l '.trim($ups), $output, PSI_DEBUG);
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                $ups_names = preg_split("/\n/", $output, -1, PREG_SPLIT_NO_EMPTY);
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                foreach ($ups_names as $ups_name) {
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                    CommonFunctions::executeProgram('upsc', trim($ups_name).'@'.trim($ups), $temp, PSI_DEBUG);
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                    if (! empty($temp)) {
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                        $this->_output[trim($ups_name).'@'.trim($ups)] = $temp;
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                    }
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                }
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            }
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        } else { //use default if address and port not defined
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            CommonFunctions::executeProgram('upsc', '-l', $output, PSI_DEBUG);
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            $ups_names = preg_split("/\n/", $output, -1, PREG_SPLIT_NO_EMPTY);
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            foreach ($ups_names as $ups_name) {
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                CommonFunctions::executeProgram('upsc', trim($ups_name), $temp, PSI_DEBUG);
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                if (! empty($temp)) {
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                    $this->_output[trim($ups_name)] = $temp;
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                }
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            }
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        }
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    }
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    /**
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     * parse the input and store data in resultset for xml generation
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     *
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     * @return void
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     */
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    private function _info()
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    {
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        if (! empty($this->_output)) {
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            foreach ($this->_output as $name => $value) {
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                $temp = preg_split("/\n/", $value, -1, PREG_SPLIT_NO_EMPTY);
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                $ups_data = array();
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                foreach ($temp as $valueTemp) {
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                    $line = preg_split('/: /', $valueTemp, 2);
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                    $ups_data[$line[0]] = isset($line[1]) ? trim($line[1]) : '';
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                }
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                $dev = new UPSDevice();
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                //General
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                $dev->setName($name);
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                if (isset($ups_data['ups.model'])) {
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                    $dev->setModel($ups_data['ups.model']);
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                }
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                if (isset($ups_data['driver.name'])) {
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                    $dev->setMode($ups_data['driver.name']);
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                }
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                if (isset($ups_data['ups.status'])) {
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                    $dev->setStatus($ups_data['ups.status']);
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                }
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                //Line
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                if (isset($ups_data['input.voltage'])) {
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                    $dev->setLineVoltage($ups_data['input.voltage']);
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                }
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                if (isset($ups_data['input.frequency'])) {
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                    $dev->setLineFrequency($ups_data['input.frequency']);
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                }
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                if (isset($ups_data['ups.load'])) {
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                    $dev->setLoad($ups_data['ups.load']);
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                }
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                //Battery
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                if (isset($ups_data['battery.voltage'])) {
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                    $dev->setBatteryVoltage($ups_data['battery.voltage']);
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                }
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                if (isset($ups_data['battery.charge'])) {
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                    $dev->setBatterCharge($ups_data['battery.charge']);
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                }
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                if (isset($ups_data['battery.runtime'])) {
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                    $dev->setTimeLeft(round($ups_data['battery.runtime']/60, 2));
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                }
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                //Temperature
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                if (isset($ups_data['ups.temperature'])) {
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                    $dev->setTemperatur($ups_data['ups.temperature']);
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                }
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                $this->upsinfo->setUpsDevices($dev);
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            }
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        }
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    }
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    /**
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     * get the information
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     *
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     * @see PSI_Interface_UPS::build()
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     *
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     * @return Void
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     */
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    public function build()
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    {
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        $this->_info();
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    }
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}