/*
 * Copyright (c) 2024 Real-Time Innovations, Inc. All rights reserved.
 * No duplications, whole or partial, manual or electronic, may be made
 * without express written permission.  Any such copies, or revisions thereof,
 * must display this notice unaltered.
 * This code contains trade secrets of Real-Time Innovations, Inc.
 */

#ifndef mig_rtpsTrust_h
#define mig_rtpsTrust_h


#ifndef osapi_type_h
  #include "osapi/osapi_type.h"
#endif
#ifndef cdr_type_h
  #include "cdr/cdr_type.h"
#endif
#ifndef mig_dll_h
  #include "mig/mig_dll.h"
#endif
#ifndef mig_rtps_h
  #include "mig/mig_rtps.h"
#endif
#ifndef mig_interpreter_h
  #include "mig/mig_interpreter.h"
#endif

#define MIG_RTPS_INTERCEPTOR_TRANSFORM_PREFIX_SIZE 4

#ifdef __cplusplus
extern "C" {
#endif

/*
 * The prefix is the 4-byte transformation kind. It is composed of:
 * - Three bytes of transformation_context. This can be used for the
 *   KeyRevisionId, which indicates the specific revision of the TransformKeyId.
 * - One byte of transformation_algorithm id.
 *
 * TransformKind is not redundant because pre-shared key doesn't have the
 * InterceptorState.
 */
typedef RTICdrOctet MIGRtpsInterceptorTransformPrefix
        [MIG_RTPS_INTERCEPTOR_TRANSFORM_PREFIX_SIZE];

typedef RTICdrOctet MIGRtpsInterceptorTransformKeyId[4];

struct MIGRtpsInterceptorTransformIdentifier {
    MIGRtpsInterceptorTransformPrefix transformation_prefix;
    MIGRtpsInterceptorTransformKeyId transformation_key_id;
};

extern MIGDllExport RTIBool MIGRtpsTrustSubmessage_serializePrefix(
        struct REDABuffer *buffer,
        struct REDABuffer *pluginSpecificHeader,
        MIGRtpsSubmessageFlag submessageFlags,
        RTI_UINT32 keyRevision,
        RTI_UINT8 transformKind,
        const MIGRtpsInterceptorTransformKeyId transformKeyId,
        RTI_INT32 pluginSpecificHeaderLength,
        RTICdrBoolean isRtpsMessage);

extern MIGDllExport RTIBool MIGRtpsTrustSubmessage_serializePostfix(
        struct REDABuffer *buffer,
        struct REDABuffer *pluginTag,
        int pluginTagLength,
        RTICdrBoolean isRtpsMessage);

extern MIGDllExport RTIBool MIGRtpsTrustSubmessage_serializeBody(
        struct REDABuffer *buffer,
        struct REDABuffer *pluginDataBody,
        int pluginDataBodyLength);

extern MIGDllExport int MIGRtpsTrustSubmessage_deserializeSubMsgHeader(
        MIGRtpsSubmessageId *submessageId,
        MIGRtpsSubmessageFlag *submessageFlags,
        RTI_UINT16 *submessagePayloadLength,
        const struct REDABuffer *bufferIn);

extern MIGDllExport int MIGRtpsTrustSubmessage_deserializePrefix(
        struct MIGRtpsInterceptorTransformIdentifier *transformId,
        MIGRtpsSubmessageFlag *flags,
        struct REDABuffer *pluginSpecificHeader,
        const struct REDABuffer *bufferIn,
        RTICdrBoolean isRtpsMessage);

extern MIGDllExport int MIGRtpsTrustSubmessage_deserializePostfix(
        struct REDABuffer *pluginTag,
        const struct REDABuffer *bufferIn,
        RTICdrBoolean isRtpsMessage);

extern MIGDllExport int MIGRtpsTrustSubmessage_skipToSubmessage(
        struct REDABuffer *bufferOut,
        const struct REDABuffer *bufferIn,
        MIGRtpsSubmessageId requestedSubmessageId);

extern MIGDllExport int MIGRtpsTrustSubmessage_deserializeBody(
        struct REDABuffer *pluginData,
        const struct REDABuffer *bufferIn);

extern MIGDllExport int MIGRtpsTrustSubmessage_serializeInfoSrcFromRtpsBuffer(
        char *buffer,
        char *rtpsBuffer);

extern MIGDllExport RTICdrBoolean
MIGRtpsTrustSubmessage_validateInfoSrc(char *buffer, char *rtpsBuffer);


#ifdef __cplusplus
} /* extern "C" */
#endif

#endif /* mig_rtpsTrust_h */