php - Guide me implementing Oauth2 PHP server using thephpleague library

Question

I am using Slim Framework With Eloquent ORM. Trying to implement https://github.com/thephpleague/oauth2-server but I am totally confused how to do this. After adding this with composer, I created database with sql file provided in this package.

Now it is suggested to implement Storage interfaces. I don't wanna do this, So I just copied storage classes found in Example Folder. I guess they should work as I am using same database right?

Also it is unclear how to initially seed the db. Here's my router where I am trying password method.

$server = new \League\OAuth2\Server\AuthorizationServer;

$server->setSessionStorage(new SessionStorage);
$server->setAccessTokenStorage(new AccessTokenStorage);
$server->setClientStorage(new ClientStorage);
$server->setScopeStorage(new ScopeStorage);

$passwordGrant = new \League\OAuth2\Server\Grant\PasswordGrant();
$passwordGrant->setVerifyCredentialsCallback(function ($username, $password) {
    // implement logic here to validate a username and password, return an ID if valid, otherwise return false
    return 1;
});

$server->addGrantType($passwordGrant);

$app->post('/token',function() use ($server,$app){
    try{
        $response = $server->issueAccessToken();

        $res = $app->response();
        $res['Content-Type'] = 'application/json';

        $res->body(json_encode($response));

    } catch (\Exception $e) {

       var_dump($e);
    }

});

I am totally frustrated whats happening. This throws following exception. [I have added scope ok in db]

object(League\OAuth2\Server\Exception\InvalidScopeException)[82]
  public 'httpStatusCode' => int 400
  public 'errorType' => string 'invalid_scope' (length=13)
  public 'serverShouldRedirect' => boolean true
  protected 'message' => string 'The requested scope is invalid, unknown, or malformed. Check the "ok" scope.' (length=76)
  private 'string' (Exception) => string '' (length=0)
  protected 'code' => int 0
  protected 'file' => string 'C:\wamp\www\linkshare\vendor\league\oauth2-server\src\Grant\AbstractGrant.php' (length=77)
  protected 'line' => int 163
  private 'trace' (Exception) => 
    array (size=11)
      0 => 
        array (size=6)
          'file' => string 'C:\wamp\www\linkshare\vendor\league\oauth2-server\src\Grant\PasswordGrant.php' (length=77)
          'line' => int 130
          'function' => string 'validateScopes' (length=14)
          'class' => string 'League\OAuth2\Server\Grant\AbstractGrant' (length=40)
          'type' => string '->' (length=2)
          'args' => 
            array (size=2)
              ...
      1 => 
        array (size=6)
          'file' => string 'C:\wamp\www\linkshare\vendor\league\oauth2-server\src\AuthorizationServer.php' (length=77)
          'line' => int 330
          'function' => string 'completeFlow' (length=12)
          'class' => string 'League\OAuth2\Server\Grant\PasswordGrant' (length=40)
          'type' => string '->' (length=2)
          'args' => 
            array (size=0)
              ...
      2 => 
        array (size=6)
          'file' => string 'C:\wamp\www\linkshare\index.php' (length=31)
          'line' => int 67
          'function' => string 'issueAccessToken' (length=16)
          'class' => string 'League\OAuth2\Server\AuthorizationServer' (length=40)
          'type' => string '->' (length=2)
          'args' => 
            array (size=0)
              ...
      3 => 
        array (size=2)
          'function' => string '{closure}' (length=9)
          'args' => 
            array (size=0)
              ...
      4 => 
        array (size=4)
          'file' => string 'C:\wamp\www\linkshare\vendor\slim\slim\Slim\Route.php' (length=53)
          'line' => int 462
          'function' => string 'call_user_func_array' (length=20)
          'args' => 
            array (size=2)
              ...
      5 => 
        array (size=6)
          'file' => string 'C:\wamp\www\linkshare\vendor\slim\slim\Slim\Slim.php' (length=52)
          'line' => int 1326
          'function' => string 'dispatch' (length=8)
          'class' => string 'Slim\Route' (length=10)
          'type' => string '->' (length=2)
          'args' => 
            array (size=0)
              ...
      6 => 
        array (size=6)
          'file' => string 'C:\wamp\www\linkshare\vendor\slim\slim\Slim\Middleware\Flash.php' (length=64)
          'line' => int 85
          'function' => string 'call' (length=4)
          'class' => string 'Slim\Slim' (length=9)
          'type' => string '->' (length=2)
          'args' => 
            array (size=0)
              ...
      7 => 
        array (size=6)
          'file' => string 'C:\wamp\www\linkshare\vendor\slim\slim\Slim\Middleware\MethodOverride.php' (length=73)
          'line' => int 92
          'function' => string 'call' (length=4)
          'class' => string 'Slim\Middleware\Flash' (length=21)
          'type' => string '->' (length=2)
          'args' => 
            array (size=0)
              ...
      8 => 
        array (size=6)
          'file' => string 'C:\wamp\www\linkshare\vendor\slim\slim\Slim\Middleware\PrettyExceptions.php' (length=75)
          'line' => int 67
          'function' => string 'call' (length=4)
          'class' => string 'Slim\Middleware\MethodOverride' (length=30)
          'type' => string '->' (length=2)
          'args' => 
            array (size=0)
              ...
      9 => 
        array (size=6)
          'file' => string 'C:\wamp\www\linkshare\vendor\slim\slim\Slim\Slim.php' (length=52)
          'line' => int 1271
          'function' => string 'call' (length=4)
          'class' => string 'Slim\Middleware\PrettyExceptions' (length=32)
          'type' => string '->' (length=2)
          'args' => 
            array (size=0)
              ...
      10 => 
        array (size=6)
          'file' => string 'C:\wamp\www\linkshare\index.php' (length=31)
          'line' => int 131
          'function' => string 'run' (length=3)
          'class' => string 'Slim\Slim' (length=9)
          'type' => string '->' (length=2)
          'args' => 
            array (size=0)

Answer 1

OAuth 2.0 很难正确理解和使用。事实上，众所周知，OAuth 2.0 的领导者在为它开发多年后离开了该协议。根据 Eran Hammer（上述首席开发人员）的说法：

与 OAuth 1.0 相比，2.0 规范更复杂、互操作性更低、用处更少、更不完整，最重要的是，安全性更低。

需要明确的是，OAuth 2.0 掌握在对 Web 安全有深入了解的开发人员手中，很可能会是一个安全的实现。然而，在大多数开发人员手中——就像过去两年的经验一样——2.0 可能会产生不安全的实现。

所以不用说，关于 OAuth 2.0 存在一些争论。PHP League 的 OAuth 2.0-Server 框架的首席开发人员 Alex Bilbie 似乎是 OAuth 2.0 知识渊博的开发人员之一，尽管毫无疑问还有更多人。尽管如此，请记住 Hammer 的一大抱怨 - 缺乏互操作性和完整性 - 您可能希望在 OAuth 2.0 实现中寻找以下内容：

• 积极发展
• 完全符合 OAuth 2.0

我个人使用并推荐 Alex Bilbie 的 OAuth 2.0-Server，它现在包括 MAC 不记名令牌，旨在完全兼容。它也在积极开发中。

那么，这对您的项目意味着什么？阅读规格。我们使用的包声称完全兼容，这意味着您最好的资源是 OAuth 2.0 规范本身。PHP League 网站下也有不错的文档，可以帮助您完成这个特定的实现。

话虽如此，您可能缺少客户/用户组合的范围。OAuth2.0 的结构方式是，您的用户需要接受客户端请求的范围。这意味着您的“范围”需要在您的其他表中链接。如果用户（在数据库中）没有批准“OK”，那么它将不会被批准。

编辑

听起来范围对您来说不是问题。该场所不太适合进行故障排除，因此我建议您确保拥有您选择使用的任何框架的最新版本，并向开发人员报告任何错误（使用 PHPLeague，它是通过 Github）。

Answer 2

自从提出这个问题以来已经有好几年了，但这里是 Slim 3 的 OAuth2 库的链接：

• https://github.com/chadicus/slim-oauth2-middleware

• https://packagist.org/packages/chadicus/slim-oauth2-routes