基于 API 调用响应的自定义用户身份验证

按照以下步骤，您可以设置自己的身份验证驱动程序，以处理使用 API 调用获取和验证用户凭据：

1. 在app/Auth/ApiUserProvider.php中创建您自己的自定义用户提供程序，内容如下：

namespace App'Auth;
use Illuminate'Contracts'Auth'UserProvider;
use Illuminate'Contracts'Auth'Authenticatable as UserContract;
class ApiUserProvider implements UserProvider
{
    /**
     * Retrieve a user by the given credentials.
     *
     * @param  array  $credentials
     * @return 'Illuminate'Contracts'Auth'Authenticatable|null
     */
    public function retrieveByCredentials(array $credentials)
    {
        $user = $this->getUserByUsername($credentials['username']);
        return $this->getApiUser($user);
    }
    /**
     * Retrieve a user by their unique identifier.
     *
     * @param  mixed  $identifier
     * @return 'Illuminate'Contracts'Auth'Authenticatable|null
     */
    public function retrieveById($identifier)
    {
        $user = $this->getUserById($identifier);
        return $this->getApiUser($user);
    }
    /**
     * Validate a user against the given credentials.
     *
     * @param  'Illuminate'Contracts'Auth'Authenticatable  $user
     * @param  array  $credentials
     * @return bool
     */
    public function validateCredentials(UserContract $user, array $credentials)
    {
        return $user->getAuthPassword() == $credentials['password'];
    }
    /**
     * Get the api user.
     *
     * @param  mixed  $user
     * @return 'App'Auth'ApiUser|null
     */
    protected function getApiUser($user)
    {
        if ($user !== null) {
            return new ApiUser($user);
        }
    }
    /**
     * Get the use details from your API.
     *
     * @param  string  $username
     * @return array|null
     */
    protected function getUsers()
    {
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($ch, CURLOPT_URL, env('API_HOST') . 'vse/accounts');
        $response = curl_exec($ch);
        $response = json_decode($response, true);
        curl_close($ch);
        return $response['data'];
    }
    protected function getUserById($id)
    {
        $user = [];
        foreach ($this->getUsers() as $item) {
            if ($item['account_id'] == $id) {
                $user = $item;
                break;
            }
        }
        return $user ?: null;
    }
    protected function getUserByUsername($username)
    {
        $user = [];
        foreach ($this->getUsers() as $item) {
            if ($item['email_address'] == $username) {
                $user = $item;
                break;
            }
        }
        return $user ?: null;
    }
    // The methods below need to be defined because of the Authenticatable contract
    // but need no implementation for 'Auth::attempt' to work and can be implemented
    // if you need their functionality
    public function retrieveByToken($identifier, $token) { }
    public function updateRememberToken(UserContract $user, $token) { }
}

2. 还要创建一个用户类，该类扩展了身份验证系统在app/Auth/ApiUser.php中提供的默认GenericUser，内容如下：

namespace App'Auth;
use Illuminate'Auth'GenericUser;
use Illuminate'Contracts'Auth'Authenticatable as UserContract;
class ApiUser extends GenericUser implements UserContract
{
    public function getAuthIdentifier()
    {
        return $this->attributes['account_id'];
    }
}

3. 在app/Providers/AuthServiceProvider.php文件的引导方法中，注册新的驱动程序用户提供程序：

public function boot(GateContract $gate)
{
    $this->registerPolicies($gate);
    // The code below sets up the 'api' driver
    $this->app['auth']->extend('api', function() {
        return new 'App'Auth'ApiUserProvider();
    });
}

4.最后，在config/auth.php文件中将驱动程序设置为自定义驱动程序：

    'driver' => 'api',

现在，您可以在控制器操作中执行以下操作：

public function postSignIn()
{
    $username = strtolower(Input::get('username'));
    $password = Input::get('password');
    if (Auth::attempt(['username' => $username, 'password' => $password])) {
        return Redirect::to('/dashboard')->with('success', 'Hi '. $username .'! You have been successfully logged in.');
    } else {
        return Redirect::to('/')->with('error', 'Username/Password Wrong')->withInput(Request::except('password'))->with('username', $username);
    }
}

成功登录后调用Auth::user()以获取用户详细信息，将返回一个包含从远程 API 获取的属性的ApiUser实例，如下所示：

ApiUser {#143 ▼
  #attributes: array:10 [▼
    "DBA" => ""
    "account_id" => 111
    "account_type" => "admin"
    "display_name" => "BobJ"
    "email_address" => "bob@xyzcorp.com"
    "first_name" => "Bob"
    "last_name" => "Jones"
    "password" => "abc"
    "message" => "Success"
    "status" => 200
  ]
}

由于您尚未发布在用户电子邮件的 API 中没有匹配项时收到的响应示例，因此我在 getUserDetails 方法中设置了条件，以确定没有匹配项，如果响应不包含 data 属性或data属性为空，则返回null。您可以根据需要更改该条件。

上面的代码是使用模拟响应进行测试的，该响应返回您在问题中发布的数据结构，并且效果很好。

最后一点：您应该强烈考虑修改 API 以尽早处理用户身份验证(也许使用 Oauth 实现(，因为发送密码(甚至更令人担忧的是纯文本(不是您想要推迟的事情。