function common_remembered_user()
{
$user = null;
$packed = isset($_COOKIE[REMEMBERME]) ? $_COOKIE[REMEMBERME] : null;
if (!$packed) {
return null;
}
list($id, $code) = explode(':', $packed);
if (!$id || !$code) {
common_log(LOG_WARNING, 'Malformed rememberme cookie: ' . $packed);
common_forgetme();
return null;
}
$rm = Remember_me::getKV('code', $code);
if (!$rm) {
common_log(LOG_WARNING, 'No such remember code: ' . $code);
common_forgetme();
return null;
}
if ($rm->user_id != $id) {
common_log(LOG_WARNING, 'Rememberme code for wrong user: '******' != ' . $id);
common_forgetme();
return null;
}
$user = User::getKV('id', $rm->user_id);
if (!$user instanceof User) {
common_log(LOG_WARNING, 'No such user for rememberme: ' . $rm->user_id);
common_forgetme();
return null;
}
// successful!
$result = $rm->delete();
if (!$result) {
common_log_db_error($rm, 'DELETE', __FILE__);
common_log(LOG_WARNING, 'Could not delete rememberme: ' . $code);
common_forgetme();
return null;
}
common_log(LOG_INFO, 'logging in ' . $user->nickname . ' using rememberme code ' . $rm->code);
common_set_user($user);
common_real_login(false);
// We issue a new cookie, so they can log in
// automatically again after this session
common_rememberme($user);
return $user;
}
