mod/scorm/loadSCO.php

   1 <?php  // $Id$
   2     require_once('../../config.php');
   3     require_once('locallib.php');
   4
   5     $id = optional_param('id', '', PARAM_INT);       // Course Module ID, or
   6     $a = optional_param('a', '', PARAM_INT);         // scorm ID
   7     $scoid = required_param('scoid', PARAM_INT);     // sco ID
   8
   9     $delayseconds = 2;  // Delay time before sco launch, used to give time to browser to define API
  10
  11     if (!empty($id)) {
  12         if (! $cm = get_coursemodule_from_id('scorm', $id)) {
  13             error('Course Module ID was incorrect');
  14         }
  15         if (! $course = get_record('course', 'id', $cm->course)) {
  16             error('Course is misconfigured');
  17         }
  18         if (! $scorm = get_record('scorm', 'id', $cm->instance)) {
  19             error('Course module is incorrect');
  20         }
  21     } else if (!empty($a)) {
  22         if (! $scorm = get_record('scorm', 'id', $a)) {
  23             error('Course module is incorrect');
  24         }
  25         if (! $course = get_record('course', 'id', $scorm->course)) {
  26             error('Course is misconfigured');
  27         }
  28         if (! $cm = get_coursemodule_from_instance('scorm', $scorm->id, $course->id)) {
  29             error('Course Module ID was incorrect');
  30         }
  31     } else {
  32         error('A required parameter is missing');
  33     }
  34
  35     require_login($course->id, false, $cm);
  36     if (!empty($scoid)) {
  37     //
  38     // Direct SCO request
  39     //
  40         if ($sco = scorm_get_sco($scoid)) {
  41             if ($sco->launch == '') {
  42                 // Search for the next launchable sco
  43                 if ($scoes = get_records_select('scorm_scoes','scorm='.$scorm->id." AND launch<>'' AND id>".$sco->id,'id ASC')) {
  44                     $sco = current($scoes);
  45                 }
  46             }
  47         }
  48     }
  49     //
  50     // If no sco was found get the first of SCORM package
  51     //
  52     if (!isset($sco)) {
  53         $scoes = get_records_select('scorm_scoes','scorm='.$scorm->id." AND launch<>''",'id ASC');
  54         $sco = current($scoes);
  55     }
  56
  57     if ($sco->scormtype == 'asset') {
  58        $attempt = scorm_get_last_attempt($scorm->id,$USER->id);
  59        $element = $scorm->version == 'scorm_13'?'cmi.completion_status':'cmi.core.lesson_status';
  60        $value = 'completed';
  61        $result = scorm_insert_track($USER->id, $scorm->id, $sco->id, $attempt, $element, $value);
  62     }
  63
  64     //
  65     // Forge SCO URL
  66     //
  67     $connector = '';
  68     $version = substr($scorm->version,0,4);
  69     if ((isset($sco->parameters) && (!empty($sco->parameters))) || ($version == 'AICC')) {
  70         if (stripos($sco->launch,'?') !== false) {
  71             $connector = '&';
  72         } else {
  73             $connector = '?';
  74         }
  75         if ((isset($sco->parameters) && (!empty($sco->parameters))) && ($sco->parameters[0] == '?')) {
  76             $sco->parameters = substr($sco->parameters,1);
  77         }
  78     }
  79
  80     if ($version == 'AICC') {
  81         if (isset($sco->parameters) && (!empty($sco->parameters))) {
  82             $sco->parameters = '&'. $sco->parameters;
  83         }
  84         $launcher = $sco->launch.$connector.'aicc_sid='.sesskey().'&aicc_url='.$CFG->wwwroot.'/mod/scorm/aicc.php'.$sco->parameters;
  85     } else {
  86         if (isset($sco->parameters) && (!empty($sco->parameters))) {
  87             $launcher = $sco->launch.$connector.$sco->parameters;
  88         } else {
  89             $launcher = $sco->launch;
  90         }
  91     }
  92
  93     if (scorm_external_link($sco->launch)) {
  94         // Remote learning activity
  95         $result = $launcher;
  96     } else if ($scorm->reference[0] == '#') {
  97         // Repository
  98         require_once($repositoryconfigfile);
  99         $result = $CFG->repositorywebroot.substr($scorm->reference,1).'/'.$sco->launch;
 100     } else {
 101         if ((basename($scorm->reference) == 'imsmanifest.xml') && scorm_external_link($scorm->reference)) {
 102             // Remote manifest
 103             $result = dirname($scorm->reference).'/'.$launcher;
 104         } else {
 105             // Moodle internal package/manifest or remote (auto-imported) package
 106             if (basename($scorm->reference) == 'imsmanifest.xml') {
 107                 $basedir = dirname($scorm->reference);
 108             } else {
 109                 $basedir = $CFG->moddata.'/scorm/'.$scorm->id;
 110             }
 111             if ($CFG->slasharguments) {
 112                 $result = $CFG->wwwroot.'/file.php/'.$scorm->course.'/'.$basedir.'/'.$launcher;
 113             } else {
 114                 $result = $CFG->wwwroot.'/file.php?file=/'.$scorm->course.'/'.$basedir.'/'.$launcher;
 115             }
 116         }
 117     }
 118 ?>
 119 <html>
 120     <head>
 121         <title>LoadSCO</title>
 122         <script type="text/javascript">
 123         //<![CDATA[
 124             setTimeout('document.location = "<?php echo $result ?>";',<?php echo $delayseconds ?>000);
 125         //]]>
 126         </script>
 127         <noscript>
 128             <meta http-equiv="refresh" content="<?php echo $delayseconds ?>;url=<?php echo $result ?>" />
 129         </noscript>
 130     </head>
 131     <body>
 132         &nbsp;
 133     </body>
 134 </html>