/* 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 <stdbool.h> // for bool, false
#include <stdlib.h>  // for NULL, EXIT_FAILURE, EXIT_SUCCESS, size_t
#include <string.h>  // for memcmp, memset

#include "test-esys.h"       // for EXIT_SKIP, test_invoke_esys
#include "tss2_common.h"     // for TSS2_RC_SUCCESS, TSS2_RC, BYTE, TSS2_RE...
#include "tss2_esys.h"       // for ESYS_TR_NONE, Esys_FlushContext, Esys_Free
#include "tss2_mu.h"         // for Tss2_MU_TPMT_PUBLIC_Marshal
#include "tss2_tpm2_types.h" // for TPM2B_NAME, TPM2_ALG_SHA256, TPM2B_AUTH

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

static bool
check_name(ESYS_CONTEXT *esys_context, ESYS_TR object_handle) {
    bool result = false;

    TPM2B_NAME *read_name = NULL;
    TPM2B_NAME *get_name = NULL;

    TSS2_RC r = Esys_ReadPublic(esys_context, object_handle, ESYS_TR_NONE, ESYS_TR_NONE,
                                ESYS_TR_NONE, NULL, &read_name, NULL);
    goto_if_error(r, "Error esys readpublic", out);

    r = Esys_TR_GetName(esys_context, object_handle, &get_name);
    goto_if_error(r, "Error esys getname", out);

    if (read_name->size != get_name->size) {
        LOG_ERROR("name size mismatch %u != %u", read_name->size, get_name->size);
        goto out;
    }

    result = memcmp(read_name->name, get_name->name, get_name->size) == 0;

out:
    Esys_Free(read_name);
    Esys_Free(get_name);

    return result;
}
/** This test is intended to test the ESYS command CreateLoaded.
 *
 * We start by creating a primary key (Esys_CreatePrimary).
 * This primary key will be used as parent key for CreateLoaded.
 *
 * Tested ESYS commands:
 *  - Esys_CreateLoaded() (F)
 *  - Esys_CreatePrimary() (M)
 *  - Esys_FlushContext() (M)
 *  - Esys_StartAuthSession() (M)
 *  - Esys_TR_GetName() (M)
 *  - Esys_TR_ReadPublic() (M)
 *
 * Used compiler defines: TEST_SESSION
 *
 * @param[in,out] esys_context The ESYS_CONTEXT.
 * @retval EXIT_FAILURE
 * @retval EXIT_SKIP
 * @retval EXIT_SUCCESS
 */

int
test_esys_createloaded(ESYS_CONTEXT *esys_context) {

    TSS2_RC r;
    ESYS_TR primaryHandle = ESYS_TR_NONE;
    ESYS_TR objectHandle = 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_PRIVATE       *outPrivate2 = NULL;
    TPM2B_PUBLIC        *outPublic2 = NULL;

#ifdef TEST_SESSION
    ESYS_TR      session = ESYS_TR_NONE;
    TPMT_SYM_DEF symmetric
        = { .algorithm = TPM2_ALG_AES, .keyBits = { .aes = 128 }, .mode = { .aes = TPM2_ALG_CFB } };
    TPMA_SESSION sessionAttributes;
    TPM2B_NONCE  nonceCaller = { .size = 20, .buffer = { 1,  2,  3,  4,  5,  6,  7,  8,  9,  10,
                                                         11, 12, 13, 14, 15, 16, 17, 18, 19, 20 } };

    memset(&sessionAttributes, 0, sizeof sessionAttributes);

    r = Esys_StartAuthSession(esys_context, ESYS_TR_NONE, ESYS_TR_NONE, ESYS_TR_NONE, ESYS_TR_NONE,
                              ESYS_TR_NONE, &nonceCaller, TPM2_SE_HMAC, &symmetric, TPM2_ALG_SHA256,
                              &session);

    goto_if_error(r, "Error: During initialization of session", error);
#endif /* TEST_SESSION */

    TPM2B_PUBLIC inPublic = {
        .size = 0,
        .publicArea = {
            .type = TPM2_ALG_RSA,
            .nameAlg = TPM2_ALG_SHA256,
            .objectAttributes = (TPMA_OBJECT_USERWITHAUTH |
                                 TPMA_OBJECT_RESTRICTED |
                                 TPMA_OBJECT_DECRYPT |
                                 TPMA_OBJECT_FIXEDTPM |
                                 TPMA_OBJECT_FIXEDPARENT |
                                 TPMA_OBJECT_SENSITIVEDATAORIGIN),
            .authPolicy = {
                 .size = 0,
             },
            .parameters.rsaDetail = {
                 .symmetric = {
                     .algorithm = TPM2_ALG_AES,
                     .keyBits.aes = 128,
                     .mode.aes = TPM2_ALG_CFB},
                 .scheme = {
                      .scheme = TPM2_ALG_NULL
                  },
                 .keyBits = 2048,
                 .exponent = 0,
             },
            .unique.rsa = {
                 .size = 0,
                 .buffer = {},
             },
        },
    };

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

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

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

    TPML_PCR_SELECTION creationPCR = {
        .count = 0,
    };

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

    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,
                           &primaryHandle, &outPublic, &creationData, &creationHash,
                           &creationTicket);
    goto_if_error(r, "Error esys create primary", error);

    r = Esys_TR_SetAuth(esys_context, primaryHandle, &authValuePrimary);
    goto_if_error(r, "Setting the Primary's AuthValue", error);

    TPM2B_AUTH authValueObject = { .size = 5, .buffer = { 6, 7, 8, 9, 10 } };

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

    TPM2B_TEMPLATE inPublic_template = { 0 };
    TPMT_PUBLIC  inPublic2 = {
        .type = TPM2_ALG_ECC,
        .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.eccDetail = {
             .symmetric = {
                 .algorithm = TPM2_ALG_NULL,
                 .keyBits.aes = 128,
                 .mode.aes = TPM2_ALG_CFB,
             },
             .scheme = {
                  .scheme = TPM2_ALG_ECDSA,
                  .details = {.ecdsa =
                              {.hashAlg = TPM2_ALG_SHA256}
                  }
              },
             .curveID = TPM2_ECC_NIST_P256,
             .kdf = {.scheme =
                     TPM2_ALG_NULL,.details = {}
              }
         },
        .unique.ecc = {
             .x = {.size = 0,.buffer = {}},
             .y = {.size = 0,.buffer = {}}
         },
    };

    size_t offset = 0;

    r = Tss2_MU_TPMT_PUBLIC_Marshal(&inPublic2, &inPublic_template.buffer[0], sizeof(TPMT_PUBLIC),
                                    &offset);
    goto_if_error(r, "Error Tss2_MU_TPMT_PUBLIC_Marshal", error);

    inPublic_template.size = offset;

    r = Esys_CreateLoaded(esys_context, primaryHandle,
#ifdef TEST_SESSION
                          session,
#else
                          ESYS_TR_PASSWORD,
#endif
                          ESYS_TR_NONE, ESYS_TR_NONE, &inSensitiveObject, &inPublic_template,
                          &objectHandle, &outPrivate2, &outPublic2);
    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_CreateLoaded not supported by TPM.");
        failure_return = EXIT_SKIP;
        goto error;
    }

    goto_if_error(r, "Error During CreateLoaded", error);

    bool names_match = check_name(esys_context, objectHandle);
    if (!names_match) {
        goto error;
    }

    r = Esys_FlushContext(esys_context, primaryHandle);
    goto_if_error(r, "Flushing context", error);

    primaryHandle = ESYS_TR_NONE;

    r = Esys_FlushContext(esys_context, objectHandle);
    goto_if_error(r, "Flushing context", error);

    objectHandle = ESYS_TR_NONE;

#ifdef TEST_SESSION
    r = Esys_FlushContext(esys_context, session);
    goto_if_error(r, "Error: FlushContext", error);
#endif

    SAFE_FREE(outPublic);
    SAFE_FREE(creationData);
    SAFE_FREE(creationHash);
    SAFE_FREE(creationTicket);
    SAFE_FREE(outPrivate2);
    SAFE_FREE(outPublic2);
    return EXIT_SUCCESS;

error:

#ifdef TEST_SESSION
    if (session != ESYS_TR_NONE) {
        if (Esys_FlushContext(esys_context, session) != TSS2_RC_SUCCESS) {
            LOG_ERROR("Cleanup session failed.");
        }
    }
#endif

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

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

    SAFE_FREE(outPublic);
    SAFE_FREE(creationData);
    SAFE_FREE(creationHash);
    SAFE_FREE(creationTicket);
    SAFE_FREE(outPrivate2);
    SAFE_FREE(outPublic2);
    return failure_return;
}

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