index.php

   1 <?php
   2 /**
   3  * The main class with the entry point to the whole application. This class
   4  * "emulates" Java(tm)'s entry point call. Additionally it covers local
   5  * variables from outside access to prevent possible attacks on uninitialized
   6  * local variables.
   7  *
   8  * But good little boys and girls would always initialize their variables... ;-)
   9  *
  10  * @author              Roland Haeder <webmaster@mxchange.org>
  11  * @version             0.0.0
  12  * @copyright   Copyright(c) 2007, 2008 Roland Haeder, this is free software
  13  * @license             GNU GPL 3.0 or any newer version
  14  * @link                http://www.ship-simu.org
  15  *
  16  * This program is free software: you can redistribute it and/or modify
  17  * it under the terms of the GNU General Public License as published by
  18  * the Free Software Foundation, either version 3 of the License, or
  19  * (at your option) any later version.
  20  *
  21  * This program is distributed in the hope that it will be useful,
  22  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  23  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  24  * GNU General Public License for more details.
  25  *
  26  * You should have received a copy of the GNU General Public License
  27  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  28  */
  29 class ApplicationEntryPoint {
  30         /**
  31          * The instances we want to remove after all is done
  32          *
  33          * @return      void
  34          */
  35         private static $instances = array (
  36                 'cfg',  // The configuration system
  37                 'loader',       // The class loader system
  38                 'debug',  // Debug output
  39                 'db',     // Database layer
  40                 'io',     // Base I/O system (local file [or network])
  41                 'engine', // Template engine ( for ApplicationEntryPoint::app_die() )
  42                 'lang',   // Language sub-system
  43                 'app',    // The ApplicationHelper instance
  44         );
  45
  46         /**
  47          * The application's emergency exit
  48          *
  49          * @param               $message        The optional message we shall output on exit
  50          * @return      void
  51          */
  52         public static function app_die ($message = "") {
  53                 // Is this method already called?
  54                 if (defined('EMERGENCY_EXIT_CALLED')) {
  55                         // Then output the text directly
  56                         die($message);
  57                 }
  58
  59                 // This method shall not be called twice
  60                 define('EMERGENCY_EXIT_CALLED', true);
  61
  62                 // Is a message set?
  63                 if (empty($message)) {
  64                         // No message provided
  65                         $message = "No message provided!";
  66                 }
  67
  68                 // Get some instances
  69                 $tpl = FrameworkConfiguration::getInstance()->readConfig("tpl_engine");
  70                 $lang = LanguageSystem::getInstance();
  71                 $io = FileIOHandler::getInstance();
  72
  73                 // Is the template engine loaded?
  74                 if ((class_exists($tpl)) && (is_object($lang)) && (is_object($io))) {
  75                         // Use the template engine for putting out (nicer look) the message
  76                         try {
  77                                 $eval = sprintf("\$tplEngine = %s::create%s(\"%s%s\", \$lang, \$io);",
  78                                         FrameworkConfiguration::getInstance()->readConfig("tpl_engine"),
  79                                         FrameworkConfiguration::getInstance()->readConfig("tpl_engine"),
  80                                         PATH,
  81                                         FrameworkConfiguration::getInstance()->readConfig("tpl_base_path")
  82                                 );
  83                                 eval($eval);
  84                         } catch (BasePathIsEmptyException $e) {
  85                                 die(sprintf("[Main:] Die Template-Engine konnte nicht initialisieren. Grund: <strong>%s</strong>",
  86                                         $e->getMessage()
  87                                 ));
  88                         } catch (InvalidBasePathStringException $e) {
  89                                 die(sprintf("[Main:] Die Template-Engine konnte nicht initialisieren. Grund: <strong>%s</strong>",
  90                                         $e->getMessage()
  91                                 ));
  92                         } catch (BasePathIsNoDirectoryException $e) {
  93                                 die(sprintf("[Main:] Die Template-Engine konnte nicht initialisieren. Grund: <strong>%s</strong>",
  94                                         $e->getMessage()
  95                                 ));
  96                         } catch (BasePathReadProtectedException $e) {
  97                                 die(sprintf("[Main:] Die Template-Engine konnte nicht initialisieren. Grund: <strong>%s</strong>",
  98                                         $e->getMessage()
  99                                 ));
 100                         }
 101
 102                         // Backtrace holen und aufbereiten
 103                         $backtraceArray = debug_backtrace();
 104                         $backtrace = "";
 105                         foreach ($backtraceArray as $key=>$trace) {
 106                                 if (!isset($trace['file'])) $trace['file'] = __FILE__;
 107                                 if (!isset($trace['line'])) $trace['line'] = 5;
 108                                 if (!isset($trace['args'])) $trace['args'] = array();
 109                                 $backtrace .= "<span class=\"backtrace_file\">".basename($trace['file'])."</span>:".$trace['line'].", <span class=\"backtrace_function\">".$trace['function']."(".count($trace['args']).")</span><br />";
 110                         }
 111
 112                         // Assign variables
 113                         $tplEngine->assignVariable("message", $message);
 114                         $tplEngine->assignVariable("backtrace", $backtrace);
 115
 116                         // Load the template
 117                         $tplEngine->loadCodeTemplate("emergency_exit");
 118
 119                         // Compile the template
 120                         $tplEngine->compileTemplate();
 121
 122                         // Compile all variables
 123                         $tplEngine->compileVariables();
 124
 125                         // Output all
 126                         $tplEngine->output();
 127
 128                         // Good bye...
 129                         exit();
 130                 } else {
 131                         // Output message and die
 132                         die(sprintf("[Main:] Emergency exit reached: <span class=\"emergency_span\">%s</span>",
 133                                 $message
 134                         ));
 135                 }
 136         }
 137
 138         /**
 139          * The application's main entry point. This class isolates some local
 140          * variables which shall not become visible to outside because of security
 141          * concerns. We are doing this here to "emulate" the well-known entry
 142          * point in Java(tm).
 143          *
 144          * @return      void
 145          */
 146         public static function main () {
 147                 // Some non-global common arrays we need...
 148                 global $_SERVER;
 149
 150                 // Load config file
 151                 require(dirname(__FILE__) . "/inc/config.php");
 152
 153                 // Load all include files
 154                 require(PATH . "inc/includes.php");
 155
 156                 // Load all framework classes
 157                 require(PATH . "inc/classes.php");
 158
 159                 // Include the application selector
 160                 require(PATH . "inc/selector.php");
 161
 162         } // END - main()
 163
 164 } // END - class
 165
 166 // Do not remove the following line:
 167 ApplicationEntryPoint::main();
 168
 169 // [EOF]
 170 ?>