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

#ifdef HAVE_CONFIG_H
#include "config.h" // IWYU pragma: keep
#endif

#include "sysapi_util.h"     // for _TSS2_SYS_CONTEXT_BLOB, syscontext_cast
#include "tss2_common.h"     // for TSS2_RC, TSS2_SYS_RC_BAD_REFERENCE
#include "tss2_mu.h"         // for Tss2_MU_UINT16_Marshal, Tss2_MU_TPM2B_N...
#include "tss2_sys.h"        // for TSS2_SYS_CONTEXT, TSS2L_SYS_AUTH_COMMAND
#include "tss2_tpm2_types.h" // for TPM2B_NAME, TPM2B_PUBLIC, TPM2B_SENSITIVE

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);
}
