/* SPDX-License-Identifier: BSD-2-Clause */
/*******************************************************************************
 * Copyright 2017-2018, Fraunhofer SIT sponsored by Infineon Technologies AG
 * All rights reserved.
 *******************************************************************************/

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

#include <stdlib.h> // for NULL, EXIT_FAILURE, EXIT_SUCCESS

#include "test-esys.h"       // for EXIT_SKIP, test_invoke_esys
#include "tss2_common.h"     // for TSS2_RC_SUCCESS, TSS2_RC, TSS2_RESMGR_R...
#include "tss2_esys.h"       // for Esys_Free, ESYS_TR_NONE, ESYS_TR_PASSWORD
#include "tss2_tpm2_types.h" // for TPM2B_AUTH, TPM2_ALG_SHA256, TPM2_RC_CO...

#define LOGMODULE test
#include "util/log.h" // for goto_if_error, LOG_ERROR, LOG_INFO, LOG...

/** This test is intended to test the command Esys_NV_Certify.
 *
 * We create a RSA primary signing key which will be used as signing key
 * for the NV data.
 *
 * Tested ESYS commands:
 *  - Esys_CreatePrimary() (M)
 *  - Esys_FlushContext() (M)
 *  - Esys_NV_Certify() (O)
 *  - Esys_NV_DefineSpace() (M)
 *  - Esys_NV_UndefineSpace() (M)
 *  - Esys_NV_Write() (M)
 *
 * @param[in,out] esys_context The ESYS_CONTEXT.
 * @retval EXIT_FAILURE
 * @retval EXIT_SKIP
 * @retval EXIT_SUCCESS
 */

int
test_esys_nv_certify(ESYS_CONTEXT *esys_context) {
    TSS2_RC r;
    ESYS_TR signHandle = ESYS_TR_NONE;
    ESYS_TR nvHandle = ESYS_TR_NONE;
    int     failure_return = EXIT_FAILURE;

    TPM2B_PUBLIC        *outPublic = NULL;
    TPM2B_CREATION_DATA *creationData = NULL;
    TPM2B_DIGEST        *creationHash = NULL;
    TPMT_TK_CREATION    *creationTicket = NULL;
    TPM2B_ATTEST        *certifyInfo = NULL;
    TPMT_SIGNATURE      *signature = NULL;

    TPM2B_AUTH authValuePrimary = { .size = 5, .buffer = { 1, 2, 3, 4, 5 } };

    TPM2B_SENSITIVE_CREATE inSensitivePrimary = {
        .size = 0,
        .sensitive = {
            .userAuth = {
                 .size = 0,
                 .buffer = {0},
             },
            .data = {
                 .size = 0,
                 .buffer = {0},
             },
        },
    };

    inSensitivePrimary.sensitive.userAuth = authValuePrimary;

    TPM2B_PUBLIC inPublic = {
            .size = 0,
            .publicArea = {
                .type = TPM2_ALG_RSA,
                .nameAlg = TPM2_ALG_SHA256,
                .objectAttributes = (
                    TPMA_OBJECT_USERWITHAUTH |
                    TPMA_OBJECT_RESTRICTED |
                    TPMA_OBJECT_SIGN_ENCRYPT |
                    TPMA_OBJECT_FIXEDTPM |
                    TPMA_OBJECT_FIXEDPARENT |
                    TPMA_OBJECT_SENSITIVEDATAORIGIN
                    ),
                .authPolicy = {
                        .size = 0,
                    },
                .parameters.rsaDetail = {
                    .symmetric = {
                        .algorithm = TPM2_ALG_NULL,
                        .keyBits.aes = 128,
                        .mode.aes = TPM2_ALG_CFB,
                        },
                    .scheme = {
                         .scheme = TPM2_ALG_RSASSA,
                         .details = { .rsassa = { .hashAlg = TPM2_ALG_SHA256 }},

                    },
                    .keyBits = 2048,
                    .exponent = 0,
                },
                .unique.rsa = {
                        .size = 0,
                        .buffer = {},
                    },
            },
        };

    TPM2B_AUTH authValue = { .size = 0, .buffer = {} };

    TPM2B_DATA outsideInfo = {
        .size = 0,
        .buffer = {},
    };

    TPML_PCR_SELECTION creationPCR = {
        .count = 0,
    };

    LOG_INFO("\nRSA key will be created.");

    r = Esys_TR_SetAuth(esys_context, ESYS_TR_RH_OWNER, &authValue);
    goto_if_error(r, "Error: TR_SetAuth", error);

    r = Esys_CreatePrimary(esys_context, ESYS_TR_RH_OWNER, ESYS_TR_PASSWORD, ESYS_TR_NONE,
                           ESYS_TR_NONE, &inSensitivePrimary, &inPublic, &outsideInfo, &creationPCR,
                           &signHandle, &outPublic, &creationData, &creationHash, &creationTicket);
    goto_if_error(r, "Error esys create primary", error);

    TPM2B_AUTH auth = { .size = 20, .buffer = { 10, 11, 12, 13, 14, 15, 16, 17, 18, 19,
                                                20, 21, 22, 23, 24, 25, 26, 27, 28, 29 } };

    TPM2B_NV_PUBLIC publicInfo = {
        .size = 0,
        .nvPublic = {
            .nvIndex =TPM2_NV_INDEX_FIRST,
            .nameAlg = TPM2_ALG_SHA256,
            .attributes = (
                TPMA_NV_OWNERWRITE |
                TPMA_NV_AUTHWRITE |
                TPMA_NV_WRITE_STCLEAR |
                TPMA_NV_READ_STCLEAR |
                TPMA_NV_AUTHREAD |
                TPMA_NV_OWNERREAD
                ),
            .authPolicy = {
                 .size = 0,
                 .buffer = {},
             },
            .dataSize = 32,
        }
    };

    r = Esys_NV_DefineSpace(esys_context, ESYS_TR_RH_OWNER, ESYS_TR_PASSWORD, ESYS_TR_NONE,
                            ESYS_TR_NONE, &auth, &publicInfo, &nvHandle);
    goto_if_error(r, "Error esys define nv space", error);

    UINT16              offset = 0;
    TPM2B_MAX_NV_BUFFER nv_test_data
        = { .size = 20, .buffer = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 } };

    r = Esys_NV_Write(esys_context, nvHandle, nvHandle, ESYS_TR_PASSWORD, ESYS_TR_NONE,
                      ESYS_TR_NONE, &nv_test_data, offset);
    goto_if_error(r, "Error esys nv write", error);

    TPM2B_DATA      qualifyingData = { 0 };
    TPMT_SIG_SCHEME inScheme = { .scheme = TPM2_ALG_NULL };

    r = Esys_NV_Certify(esys_context, signHandle, ESYS_TR_RH_OWNER, nvHandle, ESYS_TR_PASSWORD,
                        ESYS_TR_PASSWORD, ESYS_TR_NONE, &qualifyingData, &inScheme, 20, 0,
                        &certifyInfo, &signature);

    if ((r == TPM2_RC_COMMAND_CODE) || (r == (TPM2_RC_COMMAND_CODE | TSS2_RESMGR_RC_LAYER))
        || (r == (TPM2_RC_COMMAND_CODE | TSS2_RESMGR_TPM_RC_LAYER))) {
        LOG_WARNING("Command TPM2_NV_Certify not supported by TPM.");
        failure_return = EXIT_SKIP;
        goto error;
    }

    goto_if_error(r, "Error: NV_Certify", error);

    r = Esys_NV_UndefineSpace(esys_context, ESYS_TR_RH_OWNER, nvHandle, ESYS_TR_PASSWORD,
                              ESYS_TR_NONE, ESYS_TR_NONE);
    goto_if_error(r, "Error: NV_UndefineSpace", error);

    r = Esys_FlushContext(esys_context, signHandle);
    goto_if_error(r, "Error: FlushContext", error);

    Esys_Free(outPublic);
    Esys_Free(creationData);
    Esys_Free(creationHash);
    Esys_Free(creationTicket);
    Esys_Free(certifyInfo);
    Esys_Free(signature);
    return EXIT_SUCCESS;

error:

    if (signHandle != ESYS_TR_NONE) {
        if (Esys_FlushContext(esys_context, signHandle) != TSS2_RC_SUCCESS) {
            LOG_ERROR("Cleanup signHandle failed.");
        }
    }

    if (nvHandle != ESYS_TR_NONE) {
        if (Esys_NV_UndefineSpace(esys_context, ESYS_TR_RH_OWNER, nvHandle, ESYS_TR_PASSWORD,
                                  ESYS_TR_NONE, ESYS_TR_NONE)
            != TSS2_RC_SUCCESS) {
            LOG_ERROR("Cleanup nvHandle failed.");
        }
    }

    Esys_Free(outPublic);
    Esys_Free(creationData);
    Esys_Free(creationHash);
    Esys_Free(creationTicket);
    Esys_Free(certifyInfo);
    Esys_Free(signature);
    return failure_return;
}

int
test_invoke_esys(ESYS_CONTEXT *esys_context) {
    return test_esys_nv_certify(esys_context);
}
