$toolid = optional_param('id', 0, PARAM_INT);
$lticontextid = optional_param('context_id', false, PARAM_RAW);
$custom_create_context = optional_param('custom_create_context', false, PARAM_RAW);
// Temporary context.
$mycontext = new stdClass();
$mycontext->info = array();
$mycontext->info['context_id'] = optional_param('context_id', false, PARAM_RAW);
$mycontext->info['context_title'] = optional_param('context_title', false, PARAM_RAW);
$mycontext->info['context_label'] = optional_param('context_label', false, PARAM_RAW);
$mycontext->info['oauth_consumer_key'] = optional_param('oauth_consumer_key', false, PARAM_RAW);
$mycontext->info['resource_link_id'] = optional_param('resource_link_id', false, PARAM_RAW);
if (optional_param('custom_lti_message_encoded_base64', 0, PARAM_INT) == 1) {
$lticontextid = base64_decode($lticontextid);
$custom_create_context = base64_decode($custom_create_context);
$blti = new BLTI(false, false, false);
$mycontext->info = $blti->decodeBase64($mycontext->info);
}
if (!$toolid and !$lticontextid) {
print_error('invalidtoolid', 'local_ltiprovider');
}
if (!$toolid and $lticontextid) {
// Check if there is more that one course for this LTI context id.
$idnumber = local_ltiprovider_get_new_course_info('idnumber', $mycontext);
if ($DB->count_records('course', array('idnumber' => $idnumber)) > 1) {
print_error('cantdeterminecontext', 'local_ltiprovider');
}
if ($course = $DB->get_record('course', array('idnumber' => $idnumber))) {
// Look for a course created for this LTI context id.
if ($coursecontext = context_course::instance($course->id)) {
if ($DB->count_records('local_ltiprovider', array('contextid' => $coursecontext->id)) > 1) {
print_error('cantdeterminecontext', 'local_ltiprovider');