// Copyright 2018 The Chromium Authors. All rights reserved.
// Copyright (C) 2019-2021 Apple Inc. All rights reserved.
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#pragma once

#if ENABLE(WEB_AUTHN)

#include <wtf/Forward.h>

namespace WebCore {
class BufferSource;
struct AuthenticationExtensionsClientInputs;
struct PublicKeyCredentialCreationOptions;
struct PublicKeyCredentialDescriptor;
struct PublicKeyCredentialRequestOptions;
}

namespace fido {

// Checks whether the request can be translated to valid U2F request
// parameter. Namely, U2F request does not support resident key and
// user verification, and ES256 algorithm must be used for public key
// credential.
// https://fidoalliance.org/specs/fido-v2.0-id-20180227/fido-client-to-authenticator-protocol-v2.0-id-20180227.html#u2f-authenticatorMakeCredential-interoperability
WEBCORE_EXPORT bool isConvertibleToU2fRegisterCommand(const WebCore::PublicKeyCredentialCreationOptions&);

// Checks whether user verification is not required and that allow list is
// not empty.
// https://fidoalliance.org/specs/fido-v2.0-id-20180227/fido-client-to-authenticator-protocol-v2.0-id-20180227.html#u2f-authenticatorGetAssertion-interoperability
WEBCORE_EXPORT bool isConvertibleToU2fSignCommand(const WebCore::PublicKeyCredentialRequestOptions&);

// Extracts APDU encoded U2F register command from PublicKeyCredentialCreationOptions.
WEBCORE_EXPORT std::optional<Vector<uint8_t>> convertToU2fRegisterCommand(const Vector<uint8_t>& clientDataHash, const WebCore::PublicKeyCredentialCreationOptions&);

// Extracts APDU encoded U2F check only sign command from
// PublicKeyCredentialCreationOptions. Invoked when U2F register operation includes key
// handles in exclude list.
WEBCORE_EXPORT std::optional<Vector<uint8_t>> convertToU2fCheckOnlySignCommand(const Vector<uint8_t>& clientDataHash, const WebCore::PublicKeyCredentialCreationOptions&, const WebCore::PublicKeyCredentialDescriptor&);

// Extracts APDU encoded U2F sign command from PublicKeyCredentialRequestOptions.
WEBCORE_EXPORT std::optional<Vector<uint8_t>> convertToU2fSignCommand(const Vector<uint8_t>& clientDataHash, const WebCore::PublicKeyCredentialRequestOptions&, const WebCore::BufferSource& keyHandle, bool isAppId = false);

WEBCORE_EXPORT Vector<uint8_t> constructBogusU2fRegistrationCommand();

// Returns "https://www.gstatic.com/securitykey/origins.json" as an AppID when googleLegacyAppidSupport is true.
WEBCORE_EXPORT String processGoogleLegacyAppIdSupportExtension(const std::optional<WebCore::AuthenticationExtensionsClientInputs>&);

} // namespace fido

#endif // ENABLE(WEB_AUTHN)
