auth/cas/lib.php

   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  * Authentication Plugin: CAS Authentication.
  19  *
  20  * Authentication using CAS (Central Authentication Server).
  21  *
  22  * @package     auth_cas
  23  * @copyright   2018 Fabrice Ménard <menard.fabrice@gmail.com>
  24  * @license     http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  25  */
  26
  27 defined('MOODLE_INTERNAL') || die;
  28
  29 /**
  30  * Serves the logo file settings.
  31  *
  32  * @param   stdClass $course course object
  33  * @param   stdClass $cm course module object
  34  * @param   stdClass $context context object
  35  * @param   string $filearea file area
  36  * @param   array $args extra arguments
  37  * @param   bool $forcedownload whether or not force download
  38  * @param   array $options additional options affecting the file serving
  39  * @return  bool false|void
  40  */
  41 function auth_cas_pluginfile($course, $cm, $context, $filearea, $args, $forcedownload, array $options = []) {
  42     if ($context->contextlevel != CONTEXT_SYSTEM) {
  43         return false;
  44     }
  45
  46     if ($filearea !== 'logo' ) {
  47         return false;
  48     }
  49
  50     // Extract the filename / filepath from the $args array.
  51     $filename = array_pop($args);
  52     if (!$args) {
  53         $filepath = '/';
  54     } else {
  55         $filepath = '/' . implode('/', $args) . '/';
  56     }
  57
  58     // Retrieve the file from the Files API.
  59     $itemid = 0;
  60     $fs = get_file_storage();
  61     $file = $fs->get_file($context->id, 'auth_cas', $filearea, $itemid, $filepath, $filename);
  62     if (!$file) {
  63         return false; // The file does not exist.
  64     }
  65
  66     send_stored_file($file, null, 0, $forcedownload, $options);
  67 }