Symfony 3 - 内容安全策略

Question

Symfony 3 - 内容安全策略

Art*_*tur 3 javascript php symfony content-security-policy easyadmin

我对内容安全策略有疑问。每当我尝试将 JavaScript 包含到我的项目中时，都会收到内容安全策略错误。

<!DOCTYPE html>
<html>
    <head>
        <title>Symfony</title>
        <script src="{{ asset('myscript.js') }}"></script>
    </head>
    <body>
      // ...
    </body>
</html>

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我究竟做错了什么？

我已经尝试过：

.htaccess：Header set Content-Security-Policy "script-src 'self';"
html:<meta http-equiv="Content-Security-Policy" content="script-src 'self'">
https://ikvasnica.com/blog/how-to-protect-php-application-from-xss-attacks-csp-3-nonce/

Answer 1

Art*_*tur 6

好吧，我找到了解决方案。我在代码中添加了一个事件订阅者，它设置“Content-Security-Policy”标头。

<?php

namespace AppBundle\Subscriber;

use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Symfony\Component\HttpKernel\Event\FilterResponseEvent;
use Symfony\Component\HttpKernel\KernelEvents;

/**
 * Class ResponseSubscriber
 * @package AppBundle\Subscriber
 */
class ResponseSubscriber implements EventSubscriberInterface
{
    /** @inheritdoc */
    public static function getSubscribedEvents()
    {
        return [
            KernelEvents::RESPONSE => 'onResponse'
        ];
    }

    /**
     * Callback function for event subscriber
     * @param FilterResponseEvent $event
     */
    public function onResponse(FilterResponseEvent $event)
    {
        $response = $event->getResponse();

        $policy = "default-src 'self' 'unsafe-inline';"
            . "script-src 'self' 'unsafe-inline'";

        $response->headers->set("Content-Security-Policy", $policy);
        $response->headers->set("X-Content-Security-Policy", $policy);
        $response->headers->set("X-WebKit-CSP", $policy);
    }
}

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和

# app/config/services.yml
services:
    # ...
    app.responseSubscriber:
        class: AppBundle\Subscriber\ResponseSubscriber
        autowire: true

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