[Summary view]

   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   * @package   moodlecore
  18   * @subpackage backup-imscc
  19   * @copyright 2011 Darko Miletic (dmiletic@moodlerooms.com)
  20   * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  21   */
  22  
  23  defined('MOODLE_INTERNAL') or die('Direct access to this script is forbidden.');
  24  
  25  class cc11_lti extends entities11 {
  26  
  27      public function generate_node () {
  28  
  29          cc2moodle::log_action('Creating BasicLTI mods');
  30  
  31          $response = '';
  32  
  33          if (!empty(cc2moodle::$instances['instances'][MOODLE_TYPE_LTI])) {
  34              foreach (cc2moodle::$instances['instances'][MOODLE_TYPE_LTI] as $instance) {
  35                  $response .= $this->create_node_course_modules_mod_basiclti($instance);
  36              }
  37          }
  38  
  39          return $response;
  40      }
  41  
  42      private function create_node_course_modules_mod_basiclti ($instance) {
  43  
  44          $sheet_mod_basiclti = cc112moodle::loadsheet(SHEET_COURSE_SECTIONS_SECTION_MODS_MOD_LTI);
  45  
  46          $topic_data = $this->get_basiclti_data($instance);
  47  
  48          $result = '';
  49          if (!empty($topic_data)) {
  50  
  51              $find_tags = array('[#mod_instance#]'        ,
  52                                 '[#mod_basiclti_name#]'   ,
  53                                 '[#mod_basiclti_intro#]'  ,
  54                                 '[#mod_basiclti_timec#]'  ,
  55                                 '[#mod_basiclti_timem#]'  ,
  56                                 '[#mod_basiclti_toolurl#]',
  57                                 '[#mod_basiclti_icon#]'
  58                                 );
  59  
  60              $replace_values = array($instance['instance'],
  61                                      $topic_data['title'],
  62                                      $topic_data['description'],
  63                                      time(),time(),
  64                                      $topic_data['launchurl'],
  65                                      $topic_data['icon']
  66                                      );
  67  
  68              $result = str_replace($find_tags, $replace_values, $sheet_mod_basiclti);
  69  
  70          }
  71  
  72          return $result;
  73      }
  74  
  75      protected function getValue($node, $default = '') {
  76          $result = $default;
  77          if (is_object($node) && ($node->length > 0) && !empty($node->item(0)->nodeValue)) {
  78              $result = htmlspecialchars(trim($node->item(0)->nodeValue), ENT_COMPAT, 'UTF-8', false);
  79          }
  80          return $result;
  81      }
  82  
  83      public function get_basiclti_data($instance) {
  84  
  85          $topic_data = array();
  86  
  87          $basiclti_file = $this->get_external_xml($instance['resource_indentifier']);
  88  
  89          if (!empty($basiclti_file)) {
  90              $basiclti_file_path = cc2moodle::$path_to_manifest_folder . DIRECTORY_SEPARATOR . $basiclti_file;
  91              $basiclti_file_dir = dirname($basiclti_file_path);
  92              $basiclti = $this->load_xml_resource($basiclti_file_path);
  93              if (!empty($basiclti)) {
  94                  $xpath = cc2moodle::newx_path($basiclti, cc112moodle::$basicltins);
  95                  $topic_title = $this->getValue($xpath->query('/xmlns:cartridge_basiclti_link/blti:title'),'Untitled');
  96                  $blti_description = $this->getValue($xpath->query('/xmlns:cartridge_basiclti_link/blti:description'));
  97                  $launch_url = $this->getValue($xpath->query('/xmlns:cartridge_basiclti_link/blti:launch_url'));
  98                  $launch_icon = $this->getValue($xpath->query('/xmlns:cartridge_basiclti_link/blti:icon'));
  99                  $tool_raw = $this->getValue($xpath->query('/xmlns:cartridge_basiclti_link/blti:vendor/lticp:code'),null);
 100                  $tool_url = $this->getValue($xpath->query('/xmlns:cartridge_basiclti_link/blti:vendor/lticp:url'),null);
 101                  $tool_desc = $this->getValue($xpath->query('/xmlns:cartridge_basiclti_link/blti:vendor/lticp:description'),null);
 102                  $topic_data['title'      ] = $topic_title;
 103                  $topic_data['description'] = $blti_description;
 104                  $topic_data['launchurl'  ] = $launch_url;
 105                  $topic_data['icon'       ] = $launch_icon;
 106                  $topic_data['orgid'      ] = $tool_raw;
 107                  $topic_data['orgurl'     ] = $tool_url;
 108                  $topic_data['orgdesc'    ] = $tool_desc;
 109              }
 110          }
 111  
 112          return $topic_data;
 113      }
 114  
 115  }
 116