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   1  <?php // $Id: view_xml.class.php,v 1.4 2007/10/10 05:25:23 nicolasconnault 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 class will display one XML file
  28  
  29  class view_xml extends XMLDBAction {
  30  
  31      /**
  32       * Init method, every subclass will have its own
  33       */
  34      function init() {
  35          parent::init();
  36      /// Set own core attributes
  37          $this->can_subaction = ACTION_NONE;
  38          //$this->can_subaction = ACTION_HAVE_SUBACTIONS;
  39  
  40      /// Set own custom attributes
  41  
  42      /// Get needed strings
  43          $this->loadStrings(array(
  44          /// 'key' => 'module',
  45          ));
  46      }
  47  
  48      /**
  49       * Invoke method, every class will have its own
  50       * returns true/false on completion, setting both
  51       * errormsg and output as necessary
  52       */
  53      function invoke() {
  54          parent::invoke();
  55  
  56          $result = true;
  57  
  58      /// Set own core attributes
  59          $this->does_generate = ACTION_GENERATE_XML;
  60  
  61      /// These are always here
  62          global $CFG, $XMLDB;
  63  
  64      /// Do the job, setting result as needed
  65  
  66      /// Get the file parameter
  67          $file = required_param('file', PARAM_PATH);
  68          $file = $CFG->dirroot . stripslashes_safe($file);
  69      /// File must be under $CFG->wwwroot and
  70      ///  under one db directory (simple protection)
  71          if (substr($file, 0, strlen($CFG->dirroot)) == $CFG->dirroot &&
  72              substr(dirname($file), -2, 2) == 'db') {
  73          /// Everything is ok. Load the file to memory
  74              $this->output = file_get_contents($file);
  75          } else {
  76          /// Switch to HTML and error
  77              $this->does_generate = ACTION_GENERATE_HTML;
  78              $this->errormsg = 'File not viewable (' . $file .')';
  79              $result = false;
  80          }
  81  
  82      /// Return ok if arrived here
  83          return $result;
  84      }
  85  }
  86  ?>