Source/WebCore/Modules/webauthn/AuthenticationExtensionsClientOutputs.h

/*
 * Copyright (C) 2019 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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 */

#pragma once

#if ENABLE(WEB_AUTHN)

#include "CBORReader.h"
#include "CBORWriter.h"
#include <optional>

namespace WebCore {

struct AuthenticationExtensionsClientOutputs {
    struct CredentialPropertiesOutput {
        bool rk;
        template<class Encoder> void encode(Encoder&) const;
        template<class Decoder> static std::optional<CredentialPropertiesOutput> decode(Decoder&);
    };
    std::optional<bool> appid;
    std::optional<CredentialPropertiesOutput> credProps;

    template<class Encoder> void encode(Encoder&) const;
    template<class Decoder> static std::optional<AuthenticationExtensionsClientOutputs> decode(Decoder&);

    WEBCORE_EXPORT Vector<uint8_t> toCBOR() const;
    WEBCORE_EXPORT static std::optional<AuthenticationExtensionsClientOutputs> fromCBOR(const Vector<uint8_t>&);
};

template<class Encoder>
void AuthenticationExtensionsClientOutputs::encode(Encoder& encoder) const
{
    encoder << appid << credProps;
}

template<class Decoder>
std::optional<AuthenticationExtensionsClientOutputs> AuthenticationExtensionsClientOutputs::decode(Decoder& decoder)
{
    AuthenticationExtensionsClientOutputs result;

    std::optional<std::optional<bool>> appid;
    decoder >> appid;
    if (!appid)
        return std::nullopt;
    result.appid = WTFMove(*appid);

    std::optional<std::optional<CredentialPropertiesOutput>> credProps;
    decoder >> credProps;
    if (!credProps)
        return std::nullopt;
    result.credProps = WTFMove(*credProps);

    return result;
}

template<class Encoder>
void AuthenticationExtensionsClientOutputs::CredentialPropertiesOutput::encode(Encoder& encoder) const
{
    encoder << rk;
}

template<class Decoder>
std::optional<AuthenticationExtensionsClientOutputs::CredentialPropertiesOutput> AuthenticationExtensionsClientOutputs::CredentialPropertiesOutput::decode(Decoder& decoder)
{
    CredentialPropertiesOutput result;

    std::optional<bool> rk;
    decoder >> rk;
    if (!rk)
        return std::nullopt;
    result.rk = *rk;

    return result;
}

} // namespace WebCore

#endif // ENABLE(WEB_AUTHN)