/* 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_D...
#include "tss2_sys.h"        // for TSS2_SYS_CONTEXT, TSS2L_SYS_AUTH_COMMAND
#include "tss2_tpm2_types.h" // for TPM2B_DIGEST, TPM2B_NAME, TPM2B_NONCE

TSS2_RC
Tss2_Sys_PolicyAuthorize_Prepare(TSS2_SYS_CONTEXT       *sysContext,
                                 TPMI_SH_POLICY          policySession,
                                 const TPM2B_DIGEST     *approvedPolicy,
                                 const TPM2B_NONCE      *policyRef,
                                 const TPM2B_NAME       *keySign,
                                 const TPMT_TK_VERIFIED *checkTicket) {
    TSS2_SYS_CONTEXT_BLOB *ctx = syscontext_cast(sysContext);
    TSS2_RC                rval;

    if (!ctx || !checkTicket)
        return TSS2_SYS_RC_BAD_REFERENCE;

    rval = CommonPreparePrologue(ctx, TPM2_CC_PolicyAuthorize);
    if (rval)
        return rval;

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

    if (!approvedPolicy) {
        ctx->decryptNull = 1;

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

        rval = Tss2_MU_TPM2B_DIGEST_Marshal(approvedPolicy, ctx->cmdBuffer, ctx->maxCmdSize,
                                            &ctx->nextData);
    }

    if (rval)
        return rval;

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

    } else {

        rval = Tss2_MU_TPM2B_NONCE_Marshal(policyRef, ctx->cmdBuffer, ctx->maxCmdSize,
                                           &ctx->nextData);
    }

    if (rval)
        return rval;

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

    } else {

        rval = Tss2_MU_TPM2B_NAME_Marshal(keySign, ctx->cmdBuffer, ctx->maxCmdSize, &ctx->nextData);
    }

    if (rval)
        return rval;

    rval = Tss2_MU_TPMT_TK_VERIFIED_Marshal(checkTicket, ctx->cmdBuffer, ctx->maxCmdSize,
                                            &ctx->nextData);
    if (rval)
        return rval;

    ctx->decryptAllowed = 1;
    ctx->encryptAllowed = 0;
    ctx->authAllowed = 1;

    return CommonPrepareEpilogue(ctx);
}

TSS2_RC
Tss2_Sys_PolicyAuthorize_Complete(TSS2_SYS_CONTEXT *sysContext) {
    TSS2_SYS_CONTEXT_BLOB *ctx = syscontext_cast(sysContext);

    if (!ctx)
        return TSS2_SYS_RC_BAD_REFERENCE;

    return CommonComplete(ctx);
}

TSS2_RC
Tss2_Sys_PolicyAuthorize(TSS2_SYS_CONTEXT             *sysContext,
                         TPMI_SH_POLICY                policySession,
                         TSS2L_SYS_AUTH_COMMAND const *cmdAuthsArray,
                         const TPM2B_DIGEST           *approvedPolicy,
                         const TPM2B_NONCE            *policyRef,
                         const TPM2B_NAME             *keySign,
                         const TPMT_TK_VERIFIED       *checkTicket,
                         TSS2L_SYS_AUTH_RESPONSE      *rspAuthsArray) {
    TSS2_SYS_CONTEXT_BLOB *ctx = syscontext_cast(sysContext);
    TSS2_RC                rval;

    if (!checkTicket)
        return TSS2_SYS_RC_BAD_REFERENCE;

    rval = Tss2_Sys_PolicyAuthorize_Prepare(sysContext, policySession, approvedPolicy, policyRef,
                                            keySign, checkTicket);
    if (rval)
        return rval;

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

    return Tss2_Sys_PolicyAuthorize_Complete(sysContext);
}
