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loadSCO.php
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loadSCO.php
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<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
require_once('../../config.php');
require_once($CFG->dirroot.'/mod/scorm/locallib.php');
$id = optional_param('id', '', PARAM_INT); // Course Module ID, or
$a = optional_param('a', '', PARAM_INT); // scorm ID
$scoid = required_param('scoid', PARAM_INT); // sco ID.
$delayseconds = 2; // Delay time before sco launch, used to give time to browser to define API.
if (!empty($id)) {
if (! $cm = get_coursemodule_from_id('scorm', $id)) {
print_error('invalidcoursemodule');
}
if (! $course = $DB->get_record('course', array('id' => $cm->course))) {
print_error('coursemisconf');
}
if (! $scorm = $DB->get_record('scorm', array('id' => $cm->instance))) {
print_error('invalidcoursemodule');
}
} else if (!empty($a)) {
if (! $scorm = $DB->get_record('scorm', array('id' => $a))) {
print_error('coursemisconf');
}
if (! $course = $DB->get_record('course', array('id' => $scorm->course))) {
print_error('coursemisconf');
}
if (! $cm = get_coursemodule_from_instance('scorm', $scorm->id, $course->id)) {
print_error('invalidcoursemodule');
}
} else {
print_error('missingparameter');
}
$PAGE->set_url('/mod/scorm/loadSCO.php', array('scoid' => $scoid, 'id' => $cm->id));
if (!isloggedin()) { // Prevent login page from being shown in iframe.
// Using simple html instead of exceptions here as shown inside iframe/object.
echo html_writer::start_tag('html');
echo html_writer::tag('head', '');
echo html_writer::tag('body', get_string('loggedinnot'));
echo html_writer::end_tag('html');
exit;
}
require_login($course, false, $cm, false); // Call require_login anyway to set up globals correctly.
// Check if SCORM is available.
scorm_require_available($scorm);
$context = context_module::instance($cm->id);
// Forge SCO URL.
list($sco, $scolaunchurl) = scorm_get_sco_and_launch_url($scorm, $scoid, $context);
if ($sco->scormtype == 'asset') {
$attempt = scorm_get_last_attempt($scorm->id, $USER->id);
$element = (scorm_version_check($scorm->version, SCORM_13)) ? 'cmi.completion_status' : 'cmi.core.lesson_status';
$value = 'completed';
scorm_insert_track($USER->id, $scorm->id, $sco->id, $attempt, $element, $value);
}
// Trigger the SCO launched event.
scorm_launch_sco($scorm, $sco, $cm, $context, $scolaunchurl);
header('Content-Type: text/html; charset=UTF-8');
if ($sco->scormtype == 'asset') {
// HTTP 302 Found => Moved Temporarily.
header('Location: ' . $scolaunchurl);
// Provide a short feedback in case of slow network connection.
echo html_writer::start_tag('html');
echo html_writer::tag('body', html_writer::tag('p', get_string('activitypleasewait', 'scorm')));
echo html_writer::end_tag('html');
exit;
}
// We expect a SCO: select which API are we looking for.
$lmsapi = (scorm_version_check($scorm->version, SCORM_12) || empty($scorm->version)) ? 'API' : 'API_1484_11';
echo html_writer::start_tag('html');
echo html_writer::start_tag('head');
echo html_writer::tag('title', 'LoadSCO');
?>
<script type="text/javascript">
//<![CDATA[
var myApiHandle = null;
var myFindAPITries = 0;
function myGetAPIHandle() {
myFindAPITries = 0;
if (myApiHandle == null) {
myApiHandle = myGetAPI();
}
return myApiHandle;
}
function myFindAPI(win) {
while ((win.<?php echo $lmsapi; ?> == null) && (win.parent != null) && (win.parent != win)) {
myFindAPITries++;
// Note: 7 is an arbitrary number, but should be more than sufficient
if (myFindAPITries > 7) {
return null;
}
win = win.parent;
}
return win.<?php echo $lmsapi; ?>;
}
// hun for the API - needs to be loaded before we can launch the package
function myGetAPI() {
var theAPI = myFindAPI(window);
if ((theAPI == null) && (window.opener != null) && (typeof(window.opener) != "undefined")) {
theAPI = myFindAPI(window.opener);
}
if (theAPI == null) {
return null;
}
return theAPI;
}
function doredirect() {
if (myGetAPIHandle() != null) {
location = "<?php echo $scolaunchurl ?>";
}
else {
document.body.innerHTML = "<p><?php echo get_string('activityloading', 'scorm');?>" +
"<span id='countdown'><?php echo $delayseconds ?></span> " +
"<?php echo get_string('numseconds', 'moodle', '');?>. " +
"<?php echo addslashes($OUTPUT->pix_icon('wait', '', 'scorm')); ?></p>";
var e = document.getElementById("countdown");
var cSeconds = parseInt(e.innerHTML);
var timer = setInterval(function() {
if( cSeconds && myGetAPIHandle() == null ) {
e.innerHTML = --cSeconds;
} else {
clearInterval(timer);
document.body.innerHTML = "<p><?php echo get_string('activitypleasewait', 'scorm');?></p>";
location = "<?php echo $scolaunchurl ?>";
}
}, 1000);
}
}
//]]>
</script>
<noscript>
<meta http-equiv="refresh" content="0;url=<?php echo $scolaunchurl ?>" />
</noscript>
<?php
echo html_writer::end_tag('head');
echo html_writer::tag('body', html_writer::tag('p', get_string('activitypleasewait', 'scorm')), array('onload' => "doredirect();"));
echo html_writer::end_tag('html');