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

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)
    {
        // 获取请求的路由信息等，根据具体情况进行限流
        // 这里以请求路径作为示例
        $route = $request->pathinfo();
        $cacheKey = 'api_limiter_'.$route;
        
        // 判断缓存中的请求次数，如果超过了限定次数，则返回请求频繁的错误信息
        if(cache($cacheKey) >= 10) {
            return json([
                'code' => 400,
                'message' => '请求频繁，请稍后再试',
                'data' => null
            ]);
        }

        // 如果没有超过限定次数，则继续执行请求，并将请求次数加1
        cache($cacheKey, cache($cacheKey) + 1, 60); // 缓存的时间可以根据实际需求进行调整

        return $next($request);
    }
}

2. Register middleware:

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

<?php
// 注册中间件
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); // 令牌有效时间为1小时

    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) {
        // 令牌无效，返回错误信息
        return false;
    }

    // 令牌有效，可以继续执行接口逻辑
    // 在这里可以获取到$userID，可以根据用户ID做进一步的操作，例如校验用户权限等

    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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