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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_dom_FeaturePolicyUtils_h
#define mozilla_dom_FeaturePolicyUtils_h
#include "nsString.h"
#include <functional>
#include "mozilla/dom/FeaturePolicy.h"
class PickleIterator;
namespace IPC {
class Message;
class MessageReader;
class MessageWriter;
} // namespace IPC
namespace mozilla {
namespace dom {
class Document;
class FeaturePolicyUtils final {
public:
enum FeaturePolicyValue {
// Feature always allowed.
eAll,
// Feature allowed for documents that are same-origin with this one.
eSelf,
// Feature denied.
eNone,
};
// This method returns true if aFeatureName is allowed for aDocument.
// Use this method everywhere you need to check feature-policy directives.
static bool IsFeatureAllowed(Document* aDocument,
const nsAString& aFeatureName);
// Returns true if aFeatureName is a known feature policy name.
static bool IsSupportedFeature(const nsAString& aFeatureName);
// Returns true if aFeatureName is a experimental feature policy name.
static bool IsExperimentalFeature(const nsAString& aFeatureName);
// Runs aCallback for each known feature policy, with the feature name as
// argument.
static void ForEachFeature(const std::function<void(const char*)>& aCallback);
// Returns the default policy value for aFeatureName.
static FeaturePolicyValue DefaultAllowListFeature(
const nsAString& aFeatureName);
// This method returns true if aFeatureName is in unsafe allowed "*" case.
// We are in "unsafe" case when there is 'allow "*"' presents for an origin
// that's not presented in the ancestor feature policy chain, via src, via
// explicitly listed in allow, and not being the top-level origin.
static bool IsFeatureUnsafeAllowedAll(Document* aDocument,
const nsAString& aFeatureName);
private:
static void ReportViolation(Document* aDocument,
const nsAString& aFeatureName);
};
} // namespace dom
namespace ipc {
class IProtocol;
template <typename T>
struct IPDLParamTraits;
template <>
struct IPDLParamTraits<mozilla::dom::FeaturePolicy*> {
static void Write(IPC::MessageWriter* aWriter, IProtocol* aActor,
mozilla::dom::FeaturePolicy* aParam);
static bool Read(IPC::MessageReader* aReader, IProtocol* aActor,
RefPtr<mozilla::dom::FeaturePolicy>* aResult);
};
} // namespace ipc
} // namespace mozilla
#endif // mozilla_dom_FeaturePolicyUtils_h
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