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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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19
Libraries/LibWeb/ContentSecurityPolicy/Directives/DirectiveFactory.cpp Normal file
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/*
* Copyright (c) 2025, Luke Wilde <luke@ladybird.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibJS/Runtime/Realm.h>
#include <LibWeb/ContentSecurityPolicy/Directives/Directive.h>
#include <LibWeb/ContentSecurityPolicy/Directives/DirectiveFactory.h>
namespace Web::ContentSecurityPolicy::Directives {
GC::Ref<Directive> create_directive(JS::Realm& realm, String name, Vector<String> value)
{
dbgln("Potential FIXME: Creating unknown Content Security Policy directive: {}", name);
return realm.create<Directive>(move(name), move(value));
}
}