ThinkPHP6 interface current limiting and anti-brushing: protecting the security of the interface

In modern Internet applications, the use of interfaces is becoming more and more widespread, and many applications rely on Various interfaces for data transmission and interaction. However, due to the openness and convenience of interfaces, they are also easy targets for attackers, so protecting the security of interfaces becomes crucial. In the ThinkPHP6 framework, some protection mechanisms and restrictions are provided to help us effectively protect the security of the interface.

1. Interface current limiting

Interface current limiting refers to limiting the request frequency of an interface to prevent an interface from being abused by too many requests. ThinkPHP6 implements interface current limiting by using middleware. The example is as follows:

1. Create a middleware file:

In the app/middleware directory, create an ApiLimiter.php file with the following content :

<?php
namespace appmiddleware;

class ApiLimiter
{
    public function handle($request, Closure $next)
    {
        // 獲取請求的路由信息等，根據具體情況進行限流
        // 這里以請求路徑作為示例
        $route = $request->pathinfo();
        $cacheKey = 'api_limiter_'.$route;
        
        // 判斷緩存中的請求次數，如果超過了限定次數，則返回請求頻繁的錯誤信息
        if(cache($cacheKey) >= 10) {
            return json([
                'code' => 400,
                'message' => '請求頻繁，請稍后再試',
                'data' => null
            ]);
        }

        // 如果沒有超過限定次數，則繼續(xù)執(zhí)行請求，并將請求次數加1
        cache($cacheKey, cache($cacheKey) + 1, 60); // 緩存的時間可以根據實際需求進行調整

        return $next($request);
    }
}

2. Register middleware:

In the app/middleware.php file, register the middleware we created:

<?php
// 注冊中間件
return [
    // ...
    appmiddlewareApiLimiter::class
    // ...
];

3. Use middleware:

Use middleware in the routing definition:

<?php
Route::group('/api/', function () {
    // ...
    Route::rule('example', 'api/example')->middleware(appmiddlewareApiLimiter::class);
    // ...
});

Through the above configuration, we can limit the request frequency of the /api/example interface, allowing up to 10 requests per minute.

2. Anti-brushing mechanism

In addition to interface current limiting, we can also use the anti-brushing mechanism to further protect the security of the interface. ThinkPHP6 provides a convenient method to prevent swiping, that is, using tokens.

1. Generate token:

After the user successfully logs in, a token is generated and returned to the client. The method of generating tokens can be determined according to actual needs. The following is an example:

<?php
use thinkacadeCache;

function generateToken($userId)
{
    $token = md5(uniqid() . $userId);
    Cache::set('token_'.$token, $userId, 3600); // 令牌有效時間為1小時

    return $token;
}

2. Verify token:

In the interface, each time the client requests, the client needs to be verified Whether the token passed by the client is valid:

<?php
use thinkacadeCache;

function validateToken($token)
{
    $userId = Cache::get('token_'.$token);
    if(!$userId) {
        // 令牌無效，返回錯誤信息
        return false;
    }

    // 令牌有效，可以繼續(xù)執(zhí)行接口邏輯
    // 在這里可以獲取到$userID，可以根據用戶ID做進一步的操作，例如校驗用戶權限等

    return true;
}

Through the above method, we can effectively restrict and protect access to the interface. In actual projects, more complex and flexible restriction strategies can be customized according to needs and actual conditions, such as IP-based restrictions, user role-based restrictions, etc.

Summary:

The security of interfaces is crucial to modern Internet applications. Through reasonable interface current limiting and anti-brushing mechanisms, we can protect the security of the interface and prevent abuse and attacks. In the ThinkPHP6 framework, middleware and token mechanisms provide convenient implementation methods and can be flexibly applied to various projects. During the development process, we should pay more attention to interface security and make corresponding technical choices and implementations based on the actual situation. Only by ensuring the security of the interface can we better protect user privacy and application stability.

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