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   1  <?php // $Id: index.php,v 1.9.2.1 2008/05/02 04:07:29 dongsheng Exp $
   2  
   3  ///////////////////////////////////////////////////////////////////////////
   4  //                                                                       //
   5  // NOTICE OF COPYRIGHT                                                   //
   6  //                                                                       //
   7  // Moodle - Modular Object-Oriented Dynamic Learning Environment         //
   8  //          http://moodle.com                                            //
   9  //                                                                       //
  10  // Copyright (C) 1999 onwards Martin Dougiamas        http://dougiamas.com  //
  11  //           (C) 2001-3001 Eloy Lafuente (stronk7) http://contiento.com  //
  12  //                                                                       //
  13  // This program is free software; you can redistribute it and/or modify  //
  14  // it under the terms of the GNU General Public License as published by  //
  15  // the Free Software Foundation; either version 2 of the License, or     //
  16  // (at your option) any later version.                                   //
  17  //                                                                       //
  18  // This program is distributed in the hope that it will be useful,       //
  19  // but WITHOUT ANY WARRANTY; without even the implied warranty of        //
  20  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         //
  21  // GNU General Public License for more details:                          //
  22  //                                                                       //
  23  //          http://www.gnu.org/copyleft/gpl.html                         //
  24  //                                                                       //
  25  ///////////////////////////////////////////////////////////////////////////
  26  
  27  /// This is the main script for the complete XMLDB interface. From here
  28  /// all the actions supported will be launched.
  29  
  30  /// Add required XMLDB constants
  31      require_once ('../../lib/xmldb/classes/XMLDBConstants.php');
  32  
  33  /// Add required XMLDB action classes
  34      require_once ('actions/XMLDBAction.class.php');
  35  
  36  /// Add main XMLDB Generator
  37      require_once ('../../lib/xmldb/classes/generators/XMLDBGenerator.class.php');
  38  
  39  /// Add required XMLDB DB classes
  40      require_once ('../../lib/xmldb/classes/XMLDBObject.class.php');
  41      require_once ('../../lib/xmldb/classes/XMLDBFile.class.php');
  42      require_once ('../../lib/xmldb/classes/XMLDBStructure.class.php');
  43      require_once ('../../lib/xmldb/classes/XMLDBTable.class.php');
  44      require_once ('../../lib/xmldb/classes/XMLDBField.class.php');
  45      require_once ('../../lib/xmldb/classes/XMLDBKey.class.php');
  46      require_once ('../../lib/xmldb/classes/XMLDBIndex.class.php');
  47      require_once ('../../lib/xmldb/classes/XMLDBStatement.class.php');
  48  
  49  /// Add Moodle config script (this is loaded AFTER all the rest
  50  /// of classes because it starts the SESSION and classes to be
  51  /// stored there MUST be declared before in order to avoid
  52  /// getting "incomplete" objects
  53      require_once('../../config.php');
  54      require_once($CFG->libdir.'/adminlib.php');
  55      require_once($CFG->libdir.'/ddllib.php'); // Install/upgrade related db functions
  56  
  57      admin_externalpage_setup('xmldbeditor');
  58  
  59  /// Add other used libraries
  60      require_once($CFG->libdir . '/xmlize.php');
  61  
  62  /// Add all the available SQL generators
  63      $generators = get_list_of_plugins('lib/xmldb/classes/generators');
  64      foreach($generators as $generator) {
  65          require_once ('../../lib/xmldb/classes/generators/' . $generator . '/' . $generator . '.class.php');
  66      }
  67  
  68  /// Handle session data
  69      global $XMLDB;
  70  /// The global SESSION object where everything will happen
  71      if (!isset($SESSION->xmldb)) {
  72          $SESSION->xmldb = new stdClass;
  73      }
  74      $XMLDB =& $SESSION->xmldb;
  75  
  76  /// Some previous checks
  77      if (! $site = get_site()) {
  78          redirect("$CFG->wwwroot/$CFG->admin/index.php");
  79      }
  80  
  81      require_login();
  82      require_capability('moodle/site:config', get_context_instance(CONTEXT_SYSTEM));
  83  
  84  /// Body of the script, based on action, we delegate the work
  85      $action = optional_param ('action', 'main_view', PARAM_ALPHAEXT);
  86  
  87  /// Get the action path and invoke it
  88      $actionsroot = "$CFG->dirroot/$CFG->admin/xmldb/actions";
  89      $actionclass = $action . '.class.php';
  90      $actionpath = "$actionsroot/$action/$actionclass";
  91  
  92  /// Load and invoke the proper action
  93      if (file_exists($actionpath) && is_readable($actionpath)) {
  94          require_once($actionpath);
  95          if ($xmldb_action = new $action) {
  96              //Invoke it
  97              $result = $xmldb_action->invoke();
  98              if ($result) {
  99              /// Based on getDoesGenerate()
 100                  switch ($xmldb_action->getDoesGenerate()) {
 101                      case ACTION_GENERATE_HTML:
 102                      /// Define $CFG->javascript to use our custom javascripts.
 103                      /// Save the original one to add it from ours. Global too! :-(
 104                          global $standard_javascript;
 105                          $standard_javascript = $CFG->javascript;  // Save original javascript file
 106                          $CFG->javascript = $CFG->dirroot.'/'.$CFG->admin.'/xmldb/javascript.php';  //Use our custom javascript code
 107                      /// Go with standard admin header
 108                          admin_externalpage_print_header();
 109                          print_heading($xmldb_action->getTitle());
 110                          echo $xmldb_action->getOutput();
 111                          admin_externalpage_print_footer();
 112                          break;
 113                      case ACTION_GENERATE_XML:
 114                          header('Content-type: application/xhtml+xml');
 115                          echo $xmldb_action->getOutput();
 116                          break;
 117                  }
 118              } else {
 119                  error($xmldb_action->getError());
 120              }
 121          } else {
 122              error ("Error: cannot instantiate class (actions/$action/$actionclass)");
 123          }
 124      } else {
 125          error ("Error: wrong action specified ($action)");
 126      }
 127  
 128      if ($xmldb_action->getDoesGenerate() != ACTION_GENERATE_XML) {
 129          if (debugging()) {
 130              ///print_object($XMLDB);
 131          }
 132      }
 133  
 134  ?>