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LibWeb: Introduce Content Security Policy policies and directives

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These form the basis of Content Security Policy. A policy is a
collection of directives that are parsed from either the
Content-Security-Policy(-Report-Only) HTTP header, or the `<meta>`
element.

The directives are what restrict the operations can be performed in the
current global execution context. For example, "frame-ancestors: none"
tells us to prevent the page from being loaded in an embedded context,
such as `<iframe>`.

You can see it a bit like OpenBSD's pledge() functionality, but for the
web platform: https://man.openbsd.org/pledge.2
This commit is contained in:
Luke Wilde 2024-11-25 16:17:17 +00:00 • committed by Andreas Kling
commit e34a6c86b9
Notes: github-actions[bot] 2025-03-04 13:28:21 +00:00
20 changed files with 846 additions and 3 deletions
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44
Libraries/LibWeb/ContentSecurityPolicy/Directives/Names.h Normal file
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/*
* Copyright (c) 2025, Luke Wilde <luke@ladybird.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/FlyString.h>
namespace Web::ContentSecurityPolicy::Directives::Names {
#define ENUMERATE_DIRECTIVE_NAMES \
__ENUMERATE_DIRECTIVE_NAME(BaseUri, "base-uri") \
__ENUMERATE_DIRECTIVE_NAME(ChildSrc, "child-src") \
__ENUMERATE_DIRECTIVE_NAME(ConnectSrc, "connect-src") \
__ENUMERATE_DIRECTIVE_NAME(DefaultSrc, "default-src") \
__ENUMERATE_DIRECTIVE_NAME(FontSrc, "font-src") \
__ENUMERATE_DIRECTIVE_NAME(FormAction, "form-action") \
__ENUMERATE_DIRECTIVE_NAME(FrameAncestors, "frame-ancestors") \
__ENUMERATE_DIRECTIVE_NAME(FrameSrc, "frame-src") \
__ENUMERATE_DIRECTIVE_NAME(ImgSrc, "img-src") \
__ENUMERATE_DIRECTIVE_NAME(ManifestSrc, "manifest-src") \
__ENUMERATE_DIRECTIVE_NAME(MediaSrc, "media-src") \
__ENUMERATE_DIRECTIVE_NAME(ObjectSrc, "object-src") \
__ENUMERATE_DIRECTIVE_NAME(ReportTo, "report-to") \
__ENUMERATE_DIRECTIVE_NAME(ReportUri, "report-uri") \
__ENUMERATE_DIRECTIVE_NAME(Sandbox, "sandbox") \
__ENUMERATE_DIRECTIVE_NAME(ScriptSrc, "script-src") \
__ENUMERATE_DIRECTIVE_NAME(ScriptSrcElem, "script-src-elem") \
__ENUMERATE_DIRECTIVE_NAME(ScriptSrcAttr, "script-src-attr") \
__ENUMERATE_DIRECTIVE_NAME(StyleSrc, "style-src") \
__ENUMERATE_DIRECTIVE_NAME(StyleSrcElem, "style-src-elem") \
__ENUMERATE_DIRECTIVE_NAME(StyleSrcAttr, "style-src-attr") \
__ENUMERATE_DIRECTIVE_NAME(WebRTC, "webrtc") \
__ENUMERATE_DIRECTIVE_NAME(WorkerSrc, "worker-src")
#define __ENUMERATE_DIRECTIVE_NAME(name, value) extern FlyString name;
ENUMERATE_DIRECTIVE_NAMES
#undef __ENUMERATE_DIRECTIVE_NAME
void initialize_strings();
}