e800605ad3
This URL library ends up being a relatively fundamental base library of the system, as LibCore depends on LibURL. This change has two main benefits: * Moving AK back more towards being an agnostic library that can be used between the kernel and userspace. URL has never really fit that description - and is not used in the kernel. * URL _should_ depend on LibUnicode, as it needs punnycode support. However, it's not really possible to do this inside of AK as it can't depend on any external library. This change brings us a little closer to being able to do that, but unfortunately we aren't there quite yet, as the code generators depend on LibCore.
91 lines
2.9 KiB
C++
91 lines
2.9 KiB
C++
/*
|
||
* Copyright (c) 2023, Tim Flynn <trflynn89@serenityos.org>
|
||
*
|
||
* SPDX-License-Identifier: BSD-2-Clause
|
||
*/
|
||
|
||
#include <AK/String.h>
|
||
#include <LibURL/URL.h>
|
||
#include <LibWeb/DOM/Document.h>
|
||
#include <LibWeb/DOMURL/DOMURL.h>
|
||
#include <LibWeb/HTML/Origin.h>
|
||
#include <LibWeb/PermissionsPolicy/AutoplayAllowlist.h>
|
||
|
||
// FIXME: This is an ad-hoc implementation of the "autoplay" policy-controlled feature:
|
||
// https://w3c.github.io/webappsec-permissions-policy/#policy-controlled-feature
|
||
|
||
namespace Web::PermissionsPolicy {
|
||
|
||
AutoplayAllowlist& AutoplayAllowlist::the()
|
||
{
|
||
static AutoplayAllowlist filter;
|
||
return filter;
|
||
}
|
||
|
||
AutoplayAllowlist::AutoplayAllowlist() = default;
|
||
AutoplayAllowlist::~AutoplayAllowlist() = default;
|
||
|
||
// https://w3c.github.io/webappsec-permissions-policy/#is-feature-enabled
|
||
Decision AutoplayAllowlist::is_allowed_for_origin(DOM::Document const& document, HTML::Origin const& origin) const
|
||
{
|
||
// FIXME: 1. Let policy be document’s Permissions Policy
|
||
// FIXME: 2. If policy’s inherited policy for feature is Disabled, return "Disabled".
|
||
|
||
// 3. If feature is present in policy’s declared policy:
|
||
if (m_allowlist.has_value()) {
|
||
// 1. If the allowlist for feature in policy’s declared policy matches origin, then return "Enabled".
|
||
// 2. Otherwise return "Disabled".
|
||
return m_allowlist->visit(
|
||
[](Global) {
|
||
return Decision::Enabled;
|
||
},
|
||
[&](auto const& patterns) {
|
||
for (auto const& pattern : patterns) {
|
||
if (pattern.is_same_origin_domain(origin))
|
||
return Decision::Enabled;
|
||
}
|
||
|
||
return Decision::Disabled;
|
||
});
|
||
}
|
||
|
||
// 4. If feature’s default allowlist is *, return "Enabled".
|
||
// 5. If feature’s default allowlist is 'self', and origin is same origin with document’s origin, return "Enabled".
|
||
// NOTE: The "autoplay" feature's default allowlist is 'self'.
|
||
// https://html.spec.whatwg.org/multipage/infrastructure.html#autoplay-feature
|
||
if (origin.is_same_origin(document.origin()))
|
||
return Decision::Enabled;
|
||
|
||
// 6. Return "Disabled".
|
||
return Decision::Disabled;
|
||
}
|
||
|
||
void AutoplayAllowlist::enable_globally()
|
||
{
|
||
m_allowlist = Global {};
|
||
}
|
||
|
||
ErrorOr<void> AutoplayAllowlist::enable_for_origins(ReadonlySpan<String> origins)
|
||
{
|
||
m_allowlist = Patterns {};
|
||
|
||
auto& allowlist = m_allowlist->get<Patterns>();
|
||
TRY(allowlist.try_ensure_capacity(origins.size()));
|
||
|
||
for (auto const& origin : origins) {
|
||
URL::URL url { origin };
|
||
|
||
if (!url.is_valid())
|
||
url = TRY(String::formatted("https://{}", origin));
|
||
if (!url.is_valid()) {
|
||
dbgln("Invalid origin for autoplay allowlist: {}", origin);
|
||
continue;
|
||
}
|
||
|
||
TRY(allowlist.try_append(DOMURL::url_origin(url)));
|
||
}
|
||
|
||
return {};
|
||
}
|
||
|
||
}
|