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laravel passport加密jwt格式的access_token中的sub(user_id)字段

在很多需求我们不希望别人知道用户在我们表中的 user_id ;
但是又想用数据库的自增 id 功能;
一般时候在取出用户后加密 user_id 加密即可;
但是总有那么几个不经意间就可能把我们的 user_id 暴露了;
比如说 laravel 的 passport ;

创建一个项目用于测试;

laravel new passport

安装 passport;

composer require laravel/passport
php artisan migrate
php artisan passport:install

现在我们有了用于测试的 Clint;

Laravel\Passport\HasApiTokens Trait 添加到 App\User 模型中;



namespace App;

+ use Laravel\Passport\HasApiTokens;
use Illuminate\Notifications\Notifiable;
use Illuminate\Foundation\Auth\User as Authenticatable;

class User extends Authenticatable
{
+    use HasApiTokens, Notifiable;
    // ...
}

在 AuthServiceProvider 的 boot 方法中增加 Passport::routes() ;



namespace App\Providers;

+ use Laravel\Passport\Passport;
use Illuminate\Support\Facades\Gate;
use Illuminate\Foundation\Support\Providers\AuthServiceProvider as ServiceProvider;

class AuthServiceProvider extends ServiceProvider
{
    /**
     * The policy mappings for the application.
     *
     * @var array
     */
    protected $policies = [
        'App\Model' => 'App\Policies\ModelPolicy',
    ];

    /**
     * 注册任何认证/授权服务。
     *
     * @return void
     */
    public function boot()
    {
        $this->registerPolicies();

+        Passport::routes();
    }
}

将 config/auth.htmp 中的 driver 改为 passport;

'guards' => [
    'web' => [
        'driver' => 'session',
        'provider' => 'users',
    ],

    'api' => [
-        'driver' => token',
+       'driver' => 'passport',
         'provider' => 'users',
    ],
],

创建测试用户

php artisan make:seeder UsersTableSeeder


use Illuminate\Database\Seeder;

class UsersTableSeeder extends Seeder
{
    /**
     * Run the database seeds.
     *
     * @return void
     */
    public function run()
    {
        factory(App\User::class, 5)->create();
    }
}
php artisan db:seed --class=UsersTableSeeder

测试用户也有了;

获取下 access_token ;

我们拿着 access_token 去 jwt.io 解开看下;

可以看到 PAYLOAD 中的 sub 就是我们的未加密的用户id;
下面就是将 user_id 加密的过程了;

既然是加密id;
那还需要安装一个扩展包;
示例中我们使用laravel-hashids

composer require vinkla/hashids
php artisan vendor:publish --provider='Vinkla\Hashids\HashidsServiceProvider'

随便配置下;
/config/hashids.htmp

      'main' => [
-            'salt' => 'your-salt-string',
-            'length' => 'your-length-integer',
+            'salt' => 'alsd2987vnvczx&^$%Tpweqfhkjn',
+            'length' => 20,
        ],

加密用户id;
这里主要用到了 laravel 留的一个钩子;
vendor/laravel/passport/src/Bridge/UserRepository.htmp

getUserEntityByUserCredentials 中会判断 User 模型是否有 findForPassport 方法;
我们可以在此处加密;
app/User.htmp



namespace App;

use Illuminate\Notifications\Notifiable;
use Illuminate\Contracts\Auth\MustVerifyEmail;
use Illuminate\Foundation\Auth\User as Authenticatable;
use Laravel\Passport\HasApiTokens;
use Hashids;

class User extends Authenticatable
{
    use HasApiTokens, Notifiable;

    /**
     * The attributes that are mass assignable.
     *
     * @var array
     */
    protected $fillable = [
        'name', 'email', 'password',
    ];

    /**
     * The attributes that should be hidden for arrays.
     *
     * @var array
     */
    protected $hidden = [
        'password', 'remember_token',
    ];

    /**
     * 此处定义 getIdAttribute 是为了跳过模型把主键 id 转成数字的操作
     *
     * @see \Illuminate\Database\Eloquent\Concerns\HasAttributes::getAttributeValue()
     *
     * @param $value
     * @return mixed
     */
    public function getIdAttribute($value)
    {
        return $value;
    }

    /**
     * 当获取用户的时候加密 user_id
     *
     * 下面这些方法是为了加密和解密 jwt 中的 user_id
     * @see \App\Extensions\Illuminate\Auth\ExtendedUserProvider::retrieveById()
     * @see \App\Models\User::findForPassport()
     * @see \App\Models\OauthAccessToken::setUserIdAttribute()
     *
     * @param string $email
     *
     * @return User
     */
    public function findForPassport($email): self
    {
        $user     = $this->where('email', $email)->first();
        $user->id = Hashids::encode($user->id);

        return $user;
    }
}

因为上面把 user_id 加密了;
而 oauth_access_tokens 表中的 user_id 是 int 类型;
所以我们需要在向 oauth_access_tokens 存储数据的时候自动解密 user_id ;

php artisan make:model OauthAccessToken


namespace App;

use Laravel\Passport\Token;
use Vinkla\Hashids\Facades\Hashids;

class OauthAccessToken extends Token
{
    /**
     * 当向 oauth_access_tokens 表中存储数据的时候解密 user_id
     *
     * 下面这些方法是为了加密和解密 jwt 中的 user_id
     * @see \App\Extensions\Illuminate\Auth\ExtendedUserProvider::retrieveById()
     * @see \App\Models\User::findForPassport()
     * @see \App\Models\OauthAccessToken::setUserIdAttribute()
     *
     * @param int|string $value
     */
    public function setUserIdAttribute($value): void
    {
        if (is_numeric($value)) {
            $this->attributes['user_id'] = $value;
        } else {
            $this->attributes['user_id'] = current(Hashids::decode($value));
        }
    }
}

覆盖 passport 的 OauthAccessToken ;
app/Providers/AuthServiceProvider.htmp



namespace App\Providers;

use App\OauthAccessToken;
use Illuminate\Support\Facades\Gate;
use Illuminate\Foundation\Support\Providers\AuthServiceProvider as ServiceProvider;
use Laravel\Passport\Passport;

class AuthServiceProvider extends ServiceProvider
{
    /**
     * The policy mappings for the application.
     *
     * @var array
     */
    protected $policies = [
        'App\Model' => 'App\Policies\ModelPolicy',
    ];

    /**
     * Register any authentication / authorization services.
     *
     * @return void
     */
    public function boot()
    {
        $this->registerPolicies();

        Passport::routes();

+        Passport::useTokenModel(OauthAccessToken::class);
    }
}

再获取下 access_token ;

如我们所愿;
user_id 已经被加密了;
接着还需要处理的是当我们拿着这个token去访问应用的时候能成功验证;
并且可以正确的获取到用户;
定义ExtendedUserProvider 用于覆盖 retrieveById 方法;
app/Extensions/Illuminate/Auth/ExtendedUserProvider.htmp



namespace App\Extensions\Illuminate\Auth;

use App\User;
use Illuminate\Auth\AuthenticationException;
use Illuminate\Auth\EloquentUserProvider;
use Vinkla\Hashids\Facades\Hashids;

class ExtendedUserProvider extends EloquentUserProvider
{
    /**
     * 当获取用户的时候解密 user_id
     *
     * 下面这些方法是为了加密和解密 jwt 中的 user_id
     * @see \App\Extensions\Illuminate\Auth\ExtendedUserProvider::retrieveById()
     * @see \App\User::findForPassport()
     * @see \App\OauthAccessToken::setUserIdAttribute()
     *
     * @param int|string $identifier
     * @return User
     * @throws AuthenticationException
     */
    public function retrieveById($identifier)
    {
        $model = $this->createModel();

        /**
         * If Id is a string, then we need to decrypt $identifier.
         *
         * @see \App\Models\User::findForPassport()
         */
        if (!is_numeric($identifier)) {
            $identifier = current(Hashids::decode($identifier));
        }

        return $model->newQuery()
            ->where($model->getAuthIdentifierName(), $identifier)
            ->first();
    }
}

修改配置项把 auth.providers.users.driver 改成
config/auth.htmp

    'providers' => [
        'users' => [
-            'driver' => 'extended',
+            'model' => App\User::class,
        ]
    ],

app/Providers/AuthServiceProvider.htmp



namespace App\Providers;

use App\Extensions\Illuminate\Auth\ExtendedUserProvider;
use App\OauthAccessToken;
use Illuminate\Foundation\Support\Providers\AuthServiceProvider as ServiceProvider;
use Laravel\Passport\Passport;
use Illuminate\Foundation\Application;
use Auth;

class AuthServiceProvider extends ServiceProvider
{
    /**
     * The policy mappings for the application.
     *
     * @var array
     */
    protected $policies = [
        'App\Model' => 'App\Policies\ModelPolicy',
    ];

    /**
     * Register any authentication / authorization services.
     *
     * @return void
     */
    public function boot()
    {
        $this->registerPolicies();

        Passport::routes();
        Passport::useTokenModel(OauthAccessToken::class);

        /**
         * Register @see \App\Extensions\Illuminate\Auth\ExtendedUserProvider
         */
        Auth::provider('extended', function ($app, $config) {
            $model = $config['model'];
            return new ExtendedUserProvider($app['hash'], $model);
        });
    }
}

使用 jwt 请求 /api/user 正确的通过的验证

至此通过password模式的加密和解密已经完成了;
然鹅坑爹的是如果使用authorization code模式;
因为id是从 code 获取的;
而不是从模型中获取的;
因此我们需要在获取 code 的步骤中加密 user_id ;
先来覆盖原本的 AuthorizationController 中的approve方法;

php artisan make:controller Oauth/AuthorizationController


namespace App\Http\Controllers\Oauth;

use Illuminate\Http\Request;
use Laravel\Passport\Http\Controllers\ApproveAuthorizationController as Controller;
use Zend\Diactoros\Response as Psr7Response;
use Hashids;

class ApproveAuthorizationController extends Controller
{
    public function approve(Request $request)
    {
        return $this->withErrorHandling(function () use ($request) {
            $authRequest = $this->getAuthRequestFromSession($request);

            /**
             * Encrypt user_id
             *
             * @see \App\OauthAuthCode::setRawAttributes()
             */
            $user = $authRequest->getUser();
            $user->setIdentifier(Hashids::encode($user->getIdentifier()));

            return $this->convertResponse(
                $this->server->completeAuthorizationRequest($authRequest, new Psr7Response)
            );
        });
    }
}

覆盖路由;
routes/web.htmp

/*
|--------------------------------------------------------------------------
| oauth
|--------------------------------------------------------------------------
*/
Route::prefix('oauth')->namespace('Oauth')->group(function () {
    Route::post('authorize', 'ApproveAuthorizationController@approve')->name('passport.authorizations.approve');
});

此处有一个坑爹的地方;
passport 在向 oauth_auth_code 表中存储数据的时候使用了 setRawAttributes

以至于我们不能使用 setUserIdAttribute 来解密;
因此需要覆盖 OauthAuthCode 模型的 setRawAttributes 方法用于解密;

php artisan make:model OauthAuthCode

app/OauthAuthCode.htmp



namespace App;

use Hashids;
use Laravel\Passport\AuthCode;

class OauthAuthCode extends AuthCode
{
    /**
     * 因为 laravel passport 在 @see \Laravel\Passport\Bridge\AuthCodeRepository@persistNewAuthCode() 中使用的 setRawAttributes ; 而 setRawAttributes 不能触发 setUserIdAttribute ;所以不能使用 setUserIdAttribute 解密;需要 覆盖 setRawAttributes 方法;
     *
     * @param array $attributes
     * @param bool  $sync
     *
     * @return $this
     */
    public function setRawAttributes($attributes, $sync = false)
    {
        /**
         * Decrypt user_id
         *
         * Encrypt user_id in @see \App\Http\Controllers\Oauth\AuthorizationController::authorize()
         */
        if (isset($attributes['user_id'])) {
            $attributes['user_id'] = current(Hashids::decode($attributes['user_id']));
        }

        return parent::setRawAttributes($attributes, $sync);
    }
}

app/Providers/AuthServiceProvider.htmp



namespace App\Providers;

use App\Extensions\Illuminate\Auth\ExtendedUserProvider;
use App\OauthAccessToken;
+ use App\OauthAuthCode;
use Auth;
use Illuminate\Foundation\Support\Providers\AuthServiceProvider as ServiceProvider;
use Laravel\Passport\Passport;

class AuthServiceProvider extends ServiceProvider
{
    /**
     * The policy mappings for the application.
     *
     * @var array
     */
    protected $policies = [
        'App\Model' => 'App\Policies\ModelPolicy',
    ];

    /**
     * Register any authentication / authorization services.
     *
     * @return void
     */
    public function boot()
    {
        $this->registerPolicies();

        Passport::routes();
        Passport::useTokenModel(OauthAccessToken::class);
+      Passport::useAuthCodeModel(OauthAuthCode::class);
        /**
         * Register @see \App\Extensions\Illuminate\Auth\ExtendedUserProvider
         */
        Auth::provider('extended', function ($app, $config) {
            $model = $config['model'];
            return new ExtendedUserProvider($app['hash'], $model);
        });
    }
}

authorization code模式需要网页登录;

php artisan make:auth

访问 /login 登录;

生成client;

php artisan passport:client


手动组一个获取 code 的 url 并访问;
http://passport.test/oauth/authorize?client_id=3&redirect_uri=http://passport.test/auth/callback&response_type=code&scope=

在回调地址 http://passport.test/auth/callback 页面地址栏获取 code ;
拿着 code 去换取 token ;

检查 user_id 是否被加密;

检测 token 是否可用;

一切按着剧本走的没有什么问题;
我把示例代码上传到 github 上了;
如果自己按文章测试的过程中出现问题;
可用参考 http://mobmib.com/github.mobmib.com/baijunyao/laravel-passport-encrypt-user-id-demo

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