mod/scorm/datamodel.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 require_once('../../config.php');
  18 require_once($CFG->dirroot.'/mod/scorm/locallib.php');
  19
  20 $id = optional_param('id', '', PARAM_INT);       // Course Module ID, or
  21 $a = optional_param('a', '', PARAM_INT);         // scorm ID
  22 $scoid = required_param('scoid', PARAM_INT);  // sco ID
  23 $attempt = required_param('attempt', PARAM_INT);  // attempt number.
  24
  25 if (!empty($id)) {
  26     if (! $cm = get_coursemodule_from_id('scorm', $id)) {
  27         throw new \moodle_exception('invalidcoursemodule');
  28     }
  29     if (! $course = $DB->get_record("course", array("id" => $cm->course))) {
  30         throw new \moodle_exception('coursemisconf');
  31     }
  32     if (! $scorm = $DB->get_record("scorm", array("id" => $cm->instance))) {
  33         throw new \moodle_exception('invalidcoursemodule');
  34     }
  35 } else if (!empty($a)) {
  36     if (! $scorm = $DB->get_record("scorm", array("id" => $a))) {
  37         throw new \moodle_exception('invalidcoursemodule');
  38     }
  39     if (! $course = $DB->get_record("course", array("id" => $scorm->course))) {
  40         throw new \moodle_exception('coursemisconf');
  41     }
  42     if (! $cm = get_coursemodule_from_instance("scorm", $scorm->id, $course->id)) {
  43         throw new \moodle_exception('invalidcoursemodule');
  44     }
  45 } else {
  46     throw new \moodle_exception('missingparameter');
  47 }
  48
  49 $PAGE->set_url('/mod/scorm/datamodel.php', array('scoid' => $scoid, 'attempt' => $attempt, 'id' => $cm->id));
  50
  51 require_login($course, false, $cm);
  52
  53 if (confirm_sesskey() && (!empty($scoid))) {
  54     $result = true;
  55     $request = null;
  56     if (has_capability('mod/scorm:savetrack', context_module::instance($cm->id))) {
  57         // Preload all current tracking data.
  58         $sql = "SELECT e.element, v.value, v.timemodified, v.id as valueid
  59                   FROM {scorm_scoes_value} v
  60                   JOIN {scorm_attempt} a ON a.id = v.attemptid
  61                   JOIN {scorm_element} e on e.id = v.elementid
  62                   WHERE a.scormid = :scormid AND a.userid = :userid AND v.scoid = :scoid AND a.attempt = :attempt";
  63         $trackdata = $DB->get_records_sql($sql, ['userid' => $USER->id, 'scormid' => $scorm->id,
  64                                                  'scoid' => $scoid, 'attempt' => $attempt]);
  65         $attemptobject = scorm_get_attempt($USER->id, $scorm->id, $attempt);
  66         foreach (data_submitted() as $element => $value) {
  67             $element = str_replace('__', '.', $element);
  68             if (substr($element, 0, 3) == 'cmi') {
  69                 $netelement = preg_replace('/\.N(\d+)\./', "\.\$1\.", $element);
  70                 $result = scorm_insert_track($USER->id, $scorm->id, $scoid, $attemptobject, $element, $value,
  71                                              $scorm->forcecompleted, $trackdata) && $result;
  72             }
  73             if (substr($element, 0, 15) == 'adl.nav.request') {
  74                 // SCORM 2004 Sequencing Request.
  75                 require_once($CFG->dirroot.'/mod/scorm/datamodels/scorm_13lib.php');
  76
  77                 $search = array('@continue@', '@previous@', '@\{target=(\S+)\}choice@', '@exit@',
  78                                     '@exitAll@', '@abandon@', '@abandonAll@');
  79                 $replace = array('continue_', 'previous_', '\1', 'exit_', 'exitall_', 'abandon_', 'abandonall');
  80                 $action = preg_replace($search, $replace, $value);
  81
  82                 if ($action != $value) {
  83                     // Evaluating navigation request.
  84                     $valid = scorm_seq_overall ($scoid, $USER->id, $action, $attempt);
  85                     $valid = 'true';
  86
  87                     // Set valid request.
  88                     $search = array('@continue@', '@previous@', '@\{target=(\S+)\}choice@');
  89                     $replace = array('true', 'true', 'true');
  90                     $matched = preg_replace($search, $replace, $value);
  91                     if ($matched == 'true') {
  92                         $request = 'adl.nav.request_valid["'.$action.'"] = "'.$valid.'";';
  93                     }
  94                 }
  95             }
  96         }
  97     }
  98     if ($result) {
  99         echo "true\n0";
 100     } else {
 101         echo "false\n101";
 102     }
 103     if ($request != null) {
 104         echo "\n".$request;
 105     }
 106 }