Slim 프레임워크에서 미들웨어를 사용하여 CSRF(교차 사이트 요청 위조)를 처리하는 방법

composer create-project slim/slim my-app

<?php
namespace AppMiddlewares;

class CsrfMiddleware extends SlimMiddlewareAntiCsrf
{
    public function call()
    {
        $this->app->hook('slim.before', [$this, 'check']);
        $this->next->call();
    }

    public function validateStorage()
    {
        if (!$this->app->view()->getData('csrf_key') ||
            !$this->app->view()->getData('csrf_value')) {
            $this->app->getLog()->error('CSRF validation error: missing CSRF key and/or value');
            $this->app->pass();
        }
    }
}

$app = new SlimApp();
...
$app->add(new AppMiddlewaresCsrfMiddleware());
...
$app->run();

<form action="/submit" method="post">
    <input type="hidden" name="csrf_key" value="{{ csrf_key }}">
    <input type="hidden" name="csrf_value" value="{{ csrf_value }}">
    <!-- 其他表单字段 -->
    <button type="submit">提交</button>
</form>

$app->post('/submit', function ($request, $response) {
    $data = $request->getParsedBody(); // 获取请求参数

    // 检查CSRF令牌
    $csrf_key = $data['csrf_key'];
    $csrf_value = $data['csrf_value'];
    if (!$app->csrf->check($csrf_key, $csrf_value)) {
        // CSRF令牌验证失败
        $response->getBody()->write('CSRF validation failed');
        return $response->withStatus(403);
    }

    // 处理表单提交
    // ...

    $response->getBody()->write('Form submitted successfully');
    return $response;
});