Source/WebCore/Modules/webauthn/apdu/ApduResponse.h

// Copyright 2017 The Chromium Authors. All rights reserved.
// Copyright (C) 2018 Apple Inc. All rights reserved.
//
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#pragma once

#if ENABLE(WEB_AUTHN)

#include <wtf/Noncopyable.h>
#include <wtf/Vector.h>

namespace apdu {

// APDU responses are defined as part of ISO 7816-4. Serialized responses
// consist of a data field of varying length, up to a maximum 65536, and a
// two byte status field.
class WEBCORE_EXPORT ApduResponse {
    WTF_MAKE_NONCOPYABLE(ApduResponse);
public:
    // Status bytes are specified in ISO 7816-4.
    enum class Status : uint16_t {
        SW_NO_ERROR = 0x9000,
        SW_CONDITIONS_NOT_SATISFIED = 0x6985,
        SW_WRONG_DATA = 0x6A80,
        SW_WRONG_LENGTH = 0x6700,
        SW_INS_NOT_SUPPORTED = 0x6D00,
    };

    // Create a APDU response from the serialized message.
    static Optional<ApduResponse> createFromMessage(const Vector<uint8_t>& data);

    ApduResponse(Vector<uint8_t>&& data, Status);
    ApduResponse(ApduResponse&& that) = default;
    ApduResponse& operator=(ApduResponse&& that) = default;

    Vector<uint8_t> getEncodedResponse() const;

    const Vector<uint8_t>& data() const { return m_data; }
    Vector<uint8_t>& data() { return m_data; }
    Status status() const { return m_responseStatus; }

private:
    Vector<uint8_t> m_data;
    Status m_responseStatus;
};

} // namespace apdu

#endif // ENABLE(WEB_AUTHN)