/* SPDX-License-Identifier: BSD-2-Clause */
/***********************************************************************;
 * Copyright (c) 2015 - 2017, Intel Corporation
 * All rights reserved.
 ***********************************************************************/

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include "tss2_tpm2_types.h"
#include "tss2_mu.h"
#include "sysapi_util.h"

TSS2_RC Tss2_Sys_LoadExternal_Prepare(
    TSS2_SYS_CONTEXT *sysContext,
    const TPM2B_SENSITIVE *inPrivate,
    const TPM2B_PUBLIC *inPublic,
    TPMI_RH_HIERARCHY hierarchy)
{
    _TSS2_SYS_CONTEXT_BLOB *ctx = syscontext_cast(sysContext);
    TSS2_RC rval;

    if (!ctx)
        return TSS2_SYS_RC_BAD_REFERENCE;

    rval = CommonPreparePrologue(ctx, TPM2_CC_LoadExternal);
    if (rval)
        return rval;

    /* If no private key is specified, set the private key size field to 0 */
    if (!inPrivate) {
        ctx->decryptNull = 1;

        rval = Tss2_MU_UINT16_Marshal(0, ctx->cmdBuffer,
                                      ctx->maxCmdSize,
                                      &ctx->nextData);
    } else {

        rval = Tss2_MU_TPM2B_SENSITIVE_Marshal(inPrivate,
                                               ctx->cmdBuffer,
                                               ctx->maxCmdSize,
                                               &ctx->nextData);
    }

    if (rval)
        return rval;

    if (!inPublic) {
        rval = Tss2_MU_UINT16_Marshal(0, ctx->cmdBuffer,
                                      ctx->maxCmdSize,
                                      &ctx->nextData);

    } else {
        rval = ValidatePublicTemplate(inPublic);

        if (rval)
            return rval;

        rval = Tss2_MU_TPM2B_PUBLIC_Marshal(inPublic, ctx->cmdBuffer,
                                            ctx->maxCmdSize,
                                            &ctx->nextData);
    }

    if (rval)
        return rval;

    rval = Tss2_MU_UINT32_Marshal(hierarchy, ctx->cmdBuffer,
                                  ctx->maxCmdSize,
                                  &ctx->nextData);
    if (rval)
        return rval;

    ctx->decryptAllowed = 1;
    ctx->encryptAllowed = 1;
    ctx->authAllowed = 1;

    return CommonPrepareEpilogue(ctx);
}

TSS2_RC Tss2_Sys_LoadExternal_Complete(
    TSS2_SYS_CONTEXT *sysContext,
    TPM2_HANDLE *objectHandle,
    TPM2B_NAME *name)
{
    _TSS2_SYS_CONTEXT_BLOB *ctx = syscontext_cast(sysContext);
    TSS2_RC rval;

    if (!ctx)
        return TSS2_SYS_RC_BAD_REFERENCE;

    rval = Tss2_MU_UINT32_Unmarshal(ctx->cmdBuffer,
                                    ctx->maxCmdSize,
                                    &ctx->nextData,
                                    objectHandle);
    if (rval)
        return rval;

    rval = CommonComplete(ctx);
    if (rval)
        return rval;

    return Tss2_MU_TPM2B_NAME_Unmarshal(ctx->cmdBuffer,
                                        ctx->maxCmdSize,
                                        &ctx->nextData, name);
}

TSS2_RC Tss2_Sys_LoadExternal(
    TSS2_SYS_CONTEXT *sysContext,
    TSS2L_SYS_AUTH_COMMAND const *cmdAuthsArray,
    const TPM2B_SENSITIVE *inPrivate,
    const TPM2B_PUBLIC *inPublic,
    TPMI_RH_HIERARCHY hierarchy,
    TPM2_HANDLE *objectHandle,
    TPM2B_NAME *name,
    TSS2L_SYS_AUTH_RESPONSE *rspAuthsArray)
{
    _TSS2_SYS_CONTEXT_BLOB *ctx = syscontext_cast(sysContext);
    TSS2_RC rval;

    rval = Tss2_Sys_LoadExternal_Prepare(sysContext, inPrivate, inPublic, hierarchy);
    if (rval)
        return rval;

    rval = CommonOneCall(ctx, cmdAuthsArray, rspAuthsArray);
    if (rval)
        return rval;

    return Tss2_Sys_LoadExternal_Complete(sysContext, objectHandle, name);
}