protected function process_mediaelementjs($data)
{
global $CFG, $DB;
$data = (object) $data;
$oldid = $data->id;
$data->course = $this->get_courseid();
$data = GcrStorageAccessS3::refreshUrl($data);
// insert the url record
$newitemid = $DB->insert_record('mediaelementjs', $data);
// immediately after inserting "activity" record, call this
$this->apply_activity_instance($newitemid);
}
public static function refreshUrl($mdl_mediaelementjs)
{
$url = $mdl_mediaelementjs->externalurl;
if (strpos($url, 'institution/getUserStorageFile?')) {
$file_param = self::FILE_GET_PARAMETER . '=';
$str_start = strpos($url, $file_param);
if ($str_start) {
$short_name = GcrEschoolTable::parseShortNameFromUrl($url);
$app = GcrInstitutionTable::getApp($short_name);
$institution = $app->getInstitution();
$short_name = $institution->getShortName();
$str_start += strlen($file_param);
$str_end = strpos($url, '&', $str_start);
$filename = substr($url, $str_start, $str_end - $str_start);
$filename = urldecode($filename);
$str_start = strpos($url, '&app=');
if ($str_start) {
$str_start += strlen('&app=');
$str_end = strpos($url, '&', $str_start);
$short_name_user_app = substr($url, $str_start, $str_end - $str_start);
$user_app = GcrInstitutionTable::getApp($short_name_user_app);
if ($user_app) {
$short_name = $short_name_user_app;
}
}
$params = array(self::FILE_GET_PARAMETER => $filename, 'course_id' => $mdl_mediaelementjs->course, 'app' => $short_name);
$mdl_mediaelementjs->externalurl = GcrStorageAccessS3::generateStaticUrl($filename, $params, $app);
}
}
return $mdl_mediaelementjs;
}
public function executeGetUserStorageFile(sfWebRequest $request)
{
global $CFG;
$get_params = $request->getGetParameters();
$signed_request = new GcrSignedRequest($get_params);
if (!$signed_request->validateSignature()) {
$CFG->current_app->gcError('Signature Invalid', 'gcpageaccessdenied');
}
$file = $get_params[GcrStorageAccessS3::FILE_GET_PARAMETER];
if ($file) {
if (!isset($get_params['app'])) {
$app = $CFG->current_app->getInstitution();
} else {
$app = GcrInstitutionTable::getApp($get_params['app']);
}
$s3_storage = new GcrStorageAccessS3($app);
if (!$s3_storage->isPublicObject($file)) {
$CFG->current_app->requireLogin();
$current_user = $CFG->current_app->getCurrentUser();
$role_manager = $current_user->getRoleManager();
if (isset($get_params['course_id']) && !$role_manager->hasPrivilege('EschoolAdmin')) {
// make sure the current user has access to this course
$flag = false;
$mdl_course = $CFG->current_app->getCourse($get_params['course_id']);
if ($mdl_course) {
// For new course instances, we want to maintain access to
// Cloud Storage URLs with course id signed to parent course.
$course_collection = $mdl_course->getCourseCollection();
if ($course_collection) {
foreach ($course_collection->getCourses() as $course_instance) {
if ($role_manager->hasCourseAccess($course_instance)) {
$flag = true;
break;
}
}
} else {
$flag = $role_manager->hasCourseAccess($mdl_course);
}
} else {
$CFG->current_app->gcError('course_id parameter ' . $get_params['course_id'] . 'does not exist', 'gcdatabaseerror');
}
if (!$flag) {
$CFG->current_app->gcError('User Does Not Have Course Access', 'gcpageaccessdenied');
}
}
}
$url = $s3_storage->getObjectUrl($file);
} else {
$url = $CFG->current_app->getUrl();
}
$this->redirect($url);
}
public function deleteObject($obj)
{
if ($this->authorizeWriteAccess($obj)) {
parent::deleteObject($obj);
} else {
$this->app->gcError('User does not have permission to access AWS S3 resource: ' . $obj, 'gcdatabaseerror');
}
}
public function refreshMdlMediaelementjsUrls()
{
$this->start_time = time();
$count = 0;
$this->operation_description = 'Refresh Cloud Storage Video Urls:';
foreach ($this->app_array as $eschool) {
$ts = time();
$mdl_mediaelementjs_records = $eschool->selectFromMdlTable('mediaelementjs');
foreach ($mdl_mediaelementjs_records as $mdl_mediaelementjs) {
$old_url = $mdl_mediaelementjs->externalurl;
$mdl_mediaelementjs = GcrStorageAccessS3::refreshUrl($mdl_mediaelementjs, $eschool->getInstitution());
if ($old_url != $mdl_mediaelementjs->externalurl) {
$eschool->updateMdlTable('mediaelementjs', array('externalurl' => $mdl_mediaelementjs->externalurl), array('id' => $mdl_mediaelementjs->id));
$count++;
}
}
$seconds = time() - $ts;
$this->updateLogFile($eschool, true, $seconds);
}
$this->close();
return $count;
}
