Remove unnecessary TYPO3 defaults from CSP
TYPO3 adds some defaults which my website doesn't use. These are removed to keep the website more secure and reduce transferred header size.
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2 changed files with 53 additions and 0 deletions
48
Classes/EventListener/ContentSecurityPolicyMutation.php
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48
Classes/EventListener/ContentSecurityPolicyMutation.php
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<?php
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declare(strict_types=1);
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/*
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* Copyright (C) 2023 Daniel Siepmann <coding@daniel-siepmann.de>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*/
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namespace DanielSiepmann\DsSite\EventListener;
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use TYPO3\CMS\Core\Security\ContentSecurityPolicy\Directive;
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use TYPO3\CMS\Core\Security\ContentSecurityPolicy\Event\PolicyMutatedEvent;
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use TYPO3\CMS\Core\Security\ContentSecurityPolicy\Scope;
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use TYPO3\CMS\Core\Security\ContentSecurityPolicy\UriValue;
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class ContentSecurityPolicyMutation
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{
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public function __invoke(PolicyMutatedEvent $event): void
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{
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if ($event->scope !== Scope::frontend()) {
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return;
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}
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$policy = $event->getCurrentPolicy();
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$policy->remove(Directive::FrameSrc);
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$policy->reduce(
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Directive::ImgSrc,
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new UriValue('*.ytimg.com'),
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new UriValue('*.vimeocdn.com')
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);
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}
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}
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@ -77,3 +77,8 @@ services:
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tags:
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tags:
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- name: event.listener
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- name: event.listener
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event: TYPO3\CMS\Backend\Controller\Event\ModifyPageLayoutContentEvent
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event: TYPO3\CMS\Backend\Controller\Event\ModifyPageLayoutContentEvent
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DanielSiepmann\DsSite\EventListener\ContentSecurityPolicyMutation:
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tags:
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- name: event.listener
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event: TYPO3\CMS\Core\Security\ContentSecurityPolicy\Event\PolicyMutatedEvent
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