PHP에 구현된 SSO Single Sign-On 시스템 액세스 기능의 샘플 분석

interface SSOLogin
{
  /**
   * 获取登录用户信息
   * @param $ticket
   * @return mixed
   */
  public function getInfoFromTicket($ticket);
  /**
   * 单点登录授权地址
   * @return mixed
   */
  public function getAuthUrl();
}

/**
 * 检测是否单点登录
 * @return bool|string
 */
public function actionCheck()
{
  $ticket = Yii::$app->getRequest()->get('ticket');
  if (!$ticket) {
    return $this->renderAuthError(&#39;请先授权&#39;, sprintf(&#39;<a href="%s">点击登录单点登录系统</a>&#39;, SSOlogin::getInstance()->getAuthUrl()));
  }
  $userInfo = SSOlogin::getInstance()->getInfoFromTicket($ticket);
  if (empty($userInfo[&#39;username&#39;])) {
    return $this->renderAuthError(&#39;请先授权&#39;, sprintf(&#39;<a href="%s">点击登录单点登录系统</a>&#39;, SSOlogin::getInstance()->getAuthUrl()));
  }
  $username = $this->getUserName($userInfo[&#39;username&#39;]);
  $user = User::find()->canLogin()->username($username)->one();
  if (!$user) {
    $newUser = [];
    $newUser[&#39;username&#39;] = $userInfo[&#39;username&#39;];
    $newUser[&#39;email&#39;] = $this->getUserName($userInfo[&#39;username&#39;]);
    $newUser[&#39;role&#39;] = User::ROLE_DEV;
    $newUser[&#39;is_email_verified&#39;] = 1;
    $newUser[&#39;realname&#39;] = $userInfo[&#39;truename&#39;];
    $user = $this->addUser($newUser);
  }
  $isLogin = Yii::$app->user->login($user, 3600 * 24 * 30);
  if ($isLogin) {
    $this->redirect(&#39;/task/index&#39;);
  }
  return true;
}