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Differences Between: [Versions 39 and 310] [Versions 39 and 311] [Versions 39 and 400] [Versions 39 and 401] [Versions 39 and 402] [Versions 39 and 403]

   1  <?php
   2  // This file is part of Moodle - http://moodle.org/
   3  //
   4  // Moodle is free software: you can redistribute it and/or modify
   5  // it under the terms of the GNU General Public License as published by
   6  // the Free Software Foundation, either version 3 of the License, or
   7  // (at your option) any later version.
   8  //
   9  // Moodle is distributed in the hope that it will be useful,
  10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  // GNU General Public License for more details.
  13  //
  14  // You should have received a copy of the GNU General Public License
  15  // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16  
  17  /**
  18   * This file contains the version information for the comments feedback plugin
  19   *
  20   * @package assignfeedback_editpdf
  21   * @copyright  2012 Davo Smith
  22   * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23   */
  24  
  25  defined('MOODLE_INTERNAL') || die();
  26  
  27  /**
  28   * Serves assignment feedback and other files.
  29   *
  30   * @param mixed $course course or id of the course
  31   * @param mixed $cm course module or id of the course module
  32   * @param context $context
  33   * @param string $filearea
  34   * @param array $args
  35   * @param bool $forcedownload
  36   * @param array $options - List of options affecting file serving.
  37   * @return bool false if file not found, does not return if found - just send the file
  38   */
  39  function assignfeedback_editpdf_pluginfile($course,
  40                                             $cm,
  41                                             context $context,
  42                                             $filearea,
  43                                             $args,
  44                                             $forcedownload,
  45                                             array $options=array()) {
  46      global $USER, $DB, $CFG;
  47  
  48      require_once($CFG->dirroot . '/mod/assign/locallib.php');
  49  
  50      if ($context->contextlevel == CONTEXT_MODULE) {
  51  
  52          require_login($course, false, $cm);
  53          $itemid = (int)array_shift($args);
  54  
  55          $assign = new assign($context, $cm, $course);
  56  
  57          $record = $DB->get_record('assign_grades', array('id' => $itemid), 'userid,assignment', MUST_EXIST);
  58          $userid = $record->userid;
  59          if ($assign->get_instance()->id != $record->assignment) {
  60              return false;
  61          }
  62  
  63          // Rely on mod_assign checking permissions.
  64          if (!$assign->can_view_submission($userid)) {
  65              return false;
  66          }
  67  
  68          $relativepath = implode('/', $args);
  69  
  70          $fullpath = "/{$context->id}/assignfeedback_editpdf/$filearea/$itemid/$relativepath";
  71  
  72          $fs = get_file_storage();
  73          if (!$file = $fs->get_file_by_hash(sha1($fullpath)) or $file->is_directory()) {
  74              return false;
  75          }
  76          // Download MUST be forced - security!
  77          send_stored_file($file, 0, 0, true, $options);// Check if we want to retrieve the stamps.
  78      }
  79  
  80  }