backup/cc/entity11.basiclti.class.php

   1 <?php
   2
   3 // This file is part of Moodle - http://moodle.org/
   4 //
   5 // Moodle is free software: you can redistribute it and/or modify
   6 // it under the terms of the GNU General Public License as published by
   7 // the Free Software Foundation, either version 3 of the License, or
   8 // (at your option) any later version.
   9 //
  10 // Moodle is distributed in the hope that it will be useful,
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 // GNU General Public License for more details.
  14 //
  15 // You should have received a copy of the GNU General Public License
  16 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  17 /**
  18  * @package   moodlecore
  19  * @subpackage backup-imscc
  20  * @copyright 2011 Darko Miletic (dmiletic@moodlerooms.com)
  21  * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  22  */
  23
  24 defined('MOODLE_INTERNAL') or die('Direct access to this script is forbidden.');
  25
  26 class cc11_basiclti extends entities11 {
  27
  28     public function generate_node () {
  29
  30         cc2moodle::log_action('Creating BasicLTI mods');
  31
  32         $response = '';
  33
  34         if (!empty(cc2moodle::$instances['instances'][MOODLE_TYPE_BASICLTI])) {
  35             foreach (cc2moodle::$instances['instances'][MOODLE_TYPE_BASICLTI] as $instance) {
  36                 $response .= $this->create_node_course_modules_mod_basiclti($instance);
  37             }
  38         }
  39
  40         return $response;
  41     }
  42
  43     private function create_node_course_modules_mod_basiclti ($instance) {
  44
  45         $sheet_mod_basiclti = cc112moodle::loadsheet(SHEET_COURSE_SECTIONS_SECTION_MODS_MOD_BASICLTI);
  46
  47         $topic_data = $this->get_basiclti_data($instance);
  48
  49         $result = '';
  50         if (!empty($topic_data)) {
  51
  52             $find_tags = array('[#mod_instance#]'        ,
  53                                '[#mod_basiclti_name#]'   ,
  54                                '[#mod_basiclti_intro#]'  ,
  55                                '[#mod_basiclti_timec#]'  ,
  56                                '[#mod_basiclti_timem#]'  ,
  57                                '[#mod_basiclti_toolurl#]',
  58                                '[#mod_basiclti_orgid#]'  ,
  59                                '[#mod_basiclti_orgurl#]' ,
  60                                '[#mod_basiclti_orgdesc#]'
  61                                );
  62
  63             $replace_values = array($instance['instance'],
  64                                     $topic_data['title'],
  65                                     $topic_data['description'],
  66                                     time(),time(),
  67                                     $topic_data['launchurl'],
  68                                     $topic_data['orgid'],
  69                                     $topic_data['orgurl'],
  70                                     $topic_data['orgdesc']
  71                                     );
  72
  73             $result = str_replace($find_tags, $replace_values, $sheet_mod_basiclti);
  74
  75         }
  76
  77         return $result;
  78     }
  79
  80     protected function getValue($node, $default = '') {
  81         $result = $default;
  82         if (is_object($node) && ($node->length > 0) && !empty($node->item(0)->nodeValue)) {
  83             $result = htmlspecialchars(trim($node->item(0)->nodeValue), ENT_COMPAT, 'UTF-8', false);
  84         }
  85         return $result;
  86     }
  87
  88     public function get_basiclti_data($instance) {
  89
  90         $topic_data = '';
  91
  92         $basiclti_file = $this->get_external_xml($instance['resource_indentifier']);
  93
  94         if (!empty($basiclti_file)) {
  95             $basiclti_file_path = cc2moodle::$path_to_manifest_folder . DIRECTORY_SEPARATOR . $basiclti_file;
  96             $basiclti_file_dir = dirname($basiclti_file_path);
  97             $basiclti = $this->load_xml_resource($basiclti_file_path);
  98             if (!empty($basiclti)) {
  99                 $xpath = cc2moodle::newx_path($basiclti, cc112moodle::$basicltins);
 100                 $topic_title = $this->getValue($xpath->query('/xmlns:cartridge_basiclti_link/blti:title'),'Untitled');
 101                 $blti_description = $this->getValue($xpath->query('/xmlns:cartridge_basiclti_link/blti:description'));
 102                 $launch_url = $this->getValue($xpath->query('/xmlns:cartridge_basiclti_link/blti:launch_url'));
 103                 $tool_raw = $this->getValue($xpath->query('/xmlns:cartridge_basiclti_link/blti:vendor/lticp:code'),null);
 104                 $tool_url = $this->getValue($xpath->query('/xmlns:cartridge_basiclti_link/blti:vendor/lticp:url'),null);
 105                 $tool_desc = $this->getValue($xpath->query('/xmlns:cartridge_basiclti_link/blti:vendor/lticp:description'),null);
 106                 $topic_data['title'      ] = $topic_title;
 107                 $topic_data['description'] = $blti_description;
 108                 $topic_data['launchurl'  ] = $launch_url;
 109                 $topic_data['orgid'      ] = $tool_raw;
 110                 $topic_data['orgurl'     ] = $tool_url;
 111                 $topic_data['orgdesc'    ] = $tool_desc;
 112             }
 113         }
 114
 115         return $topic_data;
 116     }
 117
 118 }
 119