/**
* Require key login. Function terminates with error if key not found or incorrect.
*
* @uses NO_MOODLE_COOKIES
* @uses PARAM_ALPHANUM
* @param string $script unique script identifier
* @param int $instance optional instance id
* @return int Instance ID
*/
function require_user_key_login($script, $instance = null)
{
global $DB;
if (!NO_MOODLE_COOKIES) {
print_error('sessioncookiesdisable');
}
// Extra safety.
\core\session\manager::write_close();
$keyvalue = required_param('key', PARAM_ALPHANUM);
$key = validate_user_key($keyvalue, $script, $instance);
if (!($user = $DB->get_record('user', array('id' => $key->userid)))) {
print_error('invaliduserid');
}
// Emulate normal session.
enrol_check_plugins($user);
\core\session\manager::set_user($user);
// Note we are not using normal login.
if (!defined('USER_KEY_LOGIN')) {
define('USER_KEY_LOGIN', true);
}
// Return instance id - it might be empty.
return $key->instance;
}
$context = context_system::instance();
$PAGE->set_context($context);
// Force https.
$PAGE->https_required();
// Check if the user is already logged-in.
if (isloggedin() and !isguestuser()) {
delete_user_key('tool_mobile', $userid);
if ($USER->id == $userid) {
redirect($urltogo);
} else {
throw new moodle_exception('alreadyloggedin', 'error', '', format_string(fullname($USER)));
}
}
tool_mobile\api::check_autologin_prerequisites($userid);
// Validate and delete the key.
$key = validate_user_key($key, 'tool_mobile', null);
delete_user_key('tool_mobile', $userid);
// Double check key belong to user.
if ($key->userid != $userid) {
throw new moodle_exception('invalidkey');
}
// Key validated, now require an active user: not guest, not suspended.
$user = core_user::get_user($key->userid, '*', MUST_EXIST);
core_user::require_active_user($user, true, true);
// Do the user log-in.
if (!($user = get_complete_user_data('id', $user->id))) {
throw new moodle_exception('cannotfinduser', '', '', $user->id);
}
complete_user_login($user);
\core\session\manager::apply_concurrent_login_limit($user->id, session_id());
redirect($urltogo);
