backup/cc/entity11.lti.class.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  * @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 = '';
  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