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<?php
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/**
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* Basic Plugin Functions
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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_Plugin
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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.PSI_Plugin.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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* basic functions to get a plugin working in phpSysinfo
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* every plugin must implement this abstract class to be a valid plugin, main tasks
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* of this class are reading the configuration file and check for the required files
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* (*.js, lang/en.xml) to get everything working, if we have errors here we log them
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* to our global error object
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*
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* @category PHP
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* @package PSI_Plugin
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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 PSI_Plugin implements PSI_Interface_Plugin
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{
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/**
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* name of the plugin (classname)
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*
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* @var string
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*/
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private $_plugin_name = "";
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/**
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* full directory path of the plugin
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*
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* @var string
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*/
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private $_plugin_base = "";
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/**
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* global object for error handling
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*
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* @var Error
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*/
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protected $global_error = "";
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/**
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* xml tamplate with header
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*
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* @var SimpleXMLExtended
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*/
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protected $xml;
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/**
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* build the global Error object, read the configuration and check if all files are available
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* for a minimalistic function of the plugin
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*
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* @param string $plugin_name name of the plugin
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* @param string $enc target encoding
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* @return void
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*/
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public function __construct($plugin_name, $enc)
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{
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$this->global_error = PSI_Error::Singleton();
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if (trim($plugin_name) != "") {
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$this->_plugin_name = $plugin_name;
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$this->_plugin_base = PSI_APP_ROOT."/plugins/".strtolower($this->_plugin_name)."/";
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$this->_checkfiles();
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$this->_getconfig();
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} else {
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$this->global_error->addError("__construct()", "Parent constructor called without Plugin-Name!");
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}
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$this->_createXml($enc);
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}
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/**
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* read the plugin configuration file, if we have one in the plugin directory
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*
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* @return void
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*/
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private function _getconfig()
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{
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if ((!defined('PSI_PLUGIN_'.strtoupper($this->_plugin_name).'_ACCESS')) &&
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(!defined('PSI_PLUGIN_'.strtoupper($this->_plugin_name).'_FILE')) &&
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(!defined('PSI_PLUGIN_'.strtoupper($this->_plugin_name).'_SHOW_SERIAL'))) {
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$this->global_error->addError("phpsysinfo.ini", "Config for plugin ".$this->_plugin_name." not exist!");
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}
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}
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/**
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* check if there is a default translation file availabe and also the required js file for
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* appending the content of the plugin to the main webpage
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*
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* @return void
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*/
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private function _checkfiles()
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{
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if (!file_exists($this->_plugin_base."js/".strtolower($this->_plugin_name).".js")) {
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$this->global_error->addError("file_exists(".$this->_plugin_base."js/".strtolower($this->_plugin_name).".js)", "JS-File for Plugin '".$this->_plugin_name."' is missing!");
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} else {
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if (!is_readable($this->_plugin_base."js/".strtolower($this->_plugin_name).".js")) {
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$this->global_error->addError("is_readable(".$this->_plugin_base."js/".strtolower($this->_plugin_name).".js)", "JS-File for Plugin '".$this->_plugin_name."' is not readable but present!");
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}
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}
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if (!file_exists($this->_plugin_base."lang/en.xml")) {
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$this->global_error->addError("file_exists(".$this->_plugin_base."lang/en.xml)", "At least an english translation must exist for the plugin!");
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} else {
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if (!is_readable($this->_plugin_base."lang/en.xml")) {
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$this->global_error->addError("is_readable(".$this->_plugin_base."js/".$this->_plugin_name.".js)", "The english translation can't be read but is present!");
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}
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}
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}
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/**
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* create the xml template where plugin information are added to
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*
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* @param string $enc target encoding
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*
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* @return void
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*/
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private function _createXml($enc)
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{
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$dom = new DOMDocument('1.0', 'UTF-8');
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$root = $dom->createElement("Plugin_".$this->_plugin_name);
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$dom->appendChild($root);
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$this->xml = new SimpleXMLExtended(simplexml_import_dom($dom), $enc);
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$plugname = strtoupper($this->_plugin_name);
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if (((PSI_OS == 'WINNT') || (PSI_OS == 'Linux')) &&
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defined('PSI_PLUGIN_'.$plugname.'_WMI_HOSTNAME') &&
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(!defined('PSI_WMI_HOSTNAME') || (PSI_WMI_HOSTNAME != constant('PSI_PLUGIN_'.strtoupper($this->_plugin_name).'_WMI_HOSTNAME')))) {
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$this->xml->addAttribute('Hostname', constant('PSI_PLUGIN_'.strtoupper($this->_plugin_name).'_WMI_HOSTNAME'));
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}
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}
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}
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