/* 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 test_invoke_esys
#include "tss2_common.h"     // for TSS2_RC_SUCCESS, TSS2_RC
#include "tss2_esys.h"       // for Esys_Free, ESYS_TR_NONE, Esys_FlushContext
#include "tss2_tpm2_types.h" // for TPM2B_PUBLIC, TPM2_ALG_AES, TPM2_ALG_CFB

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

/** This test is intended to test the ESYS command PolicyPassword.
 *
 * First in a trial session the policy value to ensure that auth value
 * is included in the policy session used for authorization is
 * computed.
 * We start by creating a primary key (Esys_CreatePrimary) with this
 * policy value and a certain authorization. Than a second key it created
 * with a PoliyPassword policy session.
 *
 * Tested ESYS commands:
 *  - Esys_Create() (M)
 *  - Esys_CreatePrimary() (M)
 *  - Esys_FlushContext() (M)
 *  - Esys_PolicyGetDigest() (M)
 *  - Esys_PolicyPassword() (M)
 *  - Esys_StartAuthSession() (M)
 *
 * @param[in,out] esys_context The ESYS_CONTEXT.
 * @retval EXIT_FAILURE
 * @retval EXIT_SUCCESS
 */

int
test_esys_policy_password(ESYS_CONTEXT *esys_context) {
    TSS2_RC r;
    ESYS_TR primaryHandle = ESYS_TR_NONE;
    ESYS_TR policySession = ESYS_TR_NONE;

    TPM2B_PUBLIC        *outPublic = NULL;
    TPM2B_CREATION_DATA *creationData = NULL;
    TPM2B_DIGEST        *creationHash = NULL;
    TPMT_TK_CREATION    *creationTicket = NULL;

    TPM2B_DIGEST *policyDigestTrial = NULL;

    TPM2B_PUBLIC        *outPublic2 = NULL;
    TPM2B_PRIVATE       *outPrivate2 = NULL;
    TPM2B_CREATION_DATA *creationData2 = NULL;
    TPM2B_DIGEST        *creationHash2 = NULL;
    TPMT_TK_CREATION    *creationTicket2 = NULL;

    /*
     * Firth the policy value for changing the auth value of an NV index has to be
     * determined with a policy trial session.
     */
    ESYS_TR      sessionTrial = ESYS_TR_NONE;
    TPMT_SYM_DEF symmetricTrial
        = { .algorithm = TPM2_ALG_AES, .keyBits = { .aes = 128 }, .mode = { .aes = TPM2_ALG_CFB } };
    TPM2B_NONCE nonceCallerTrial
        = { .size = 20, .buffer = { 11, 12, 13, 14, 15, 16, 17, 18, 19, 11,
                                    21, 22, 23, 24, 25, 26, 27, 28, 29, 30 } };

    r = Esys_StartAuthSession(esys_context, ESYS_TR_NONE, ESYS_TR_NONE, ESYS_TR_NONE, ESYS_TR_NONE,
                              ESYS_TR_NONE, &nonceCallerTrial, TPM2_SE_TRIAL, &symmetricTrial,
                              TPM2_ALG_SHA256, &sessionTrial);
    goto_if_error(r, "Error: During initialization of policy trial session", error);

    r = Esys_PolicyPassword(esys_context, sessionTrial, ESYS_TR_NONE, ESYS_TR_NONE, ESYS_TR_NONE);
    goto_if_error(r, "Error: PolicyPassword", error);

    r = Esys_PolicyGetDigest(esys_context, sessionTrial, ESYS_TR_NONE, ESYS_TR_NONE, ESYS_TR_NONE,
                             &policyDigestTrial);
    goto_if_error(r, "Error: PolicyGetDigest", error);

    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 = *policyDigestTrial,
            .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 = {
                 .size = 0,
                 .buffer = {0 },
             },
            .data = {
                 .size = 0,
                 .buffer = {0},
             },
        },
    };

    inSensitivePrimary.sensitive.userAuth = authValuePrimary;

    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);

    TPMT_SYM_DEF policySymmetric
        = { .algorithm = TPM2_ALG_AES, .keyBits = { .aes = 128 }, .mode = { .aes = TPM2_ALG_CFB } };
    TPM2B_NONCE policyNonceCaller
        = { .size = 20, .buffer = { 11, 12, 13, 14, 15, 16, 17, 18, 19, 11,
                                    21, 22, 23, 24, 25, 26, 27, 28, 29, 30 } };
    r = Esys_StartAuthSession(esys_context, ESYS_TR_NONE, ESYS_TR_NONE, ESYS_TR_NONE, ESYS_TR_NONE,
                              ESYS_TR_NONE, &policyNonceCaller, TPM2_SE_POLICY, &policySymmetric,
                              TPM2_ALG_SHA256, &policySession);
    goto_if_error(r, "Error: During initialization of policy trial session", error);

    r = Esys_PolicyPassword(esys_context, policySession, ESYS_TR_NONE, ESYS_TR_NONE, ESYS_TR_NONE);
    goto_if_error(r, "Error: PolicyAuthValue", error);

    r = Esys_TR_SetAuth(esys_context, primaryHandle, &authValuePrimary);
    goto_if_error(r, "Error: TR_SetAuth", error);

    TPM2B_AUTH authKey2 = { .size = 6, .buffer = { 6, 7, 8, 9, 10, 11 } };

    TPM2B_SENSITIVE_CREATE inSensitive2
        = { .size = 0, .sensitive = { .userAuth = authKey2, .data = { .size = 0, .buffer = {} } } };

    TPM2B_PUBLIC inPublic2 = {
        .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_DATA outsideInfo2 = {
        .size = 0,
        .buffer = {},
    };

    TPML_PCR_SELECTION creationPCR2 = {
        .count = 0,
    };

    r = Esys_Create(esys_context, primaryHandle, policySession, ESYS_TR_NONE, ESYS_TR_NONE,
                    &inSensitive2, &inPublic2, &outsideInfo2, &creationPCR2, &outPrivate2,
                    &outPublic2, &creationData2, &creationHash2, &creationTicket2);
    goto_if_error(r, "Error esys create ", error);

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

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

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

    Esys_Free(outPublic);
    Esys_Free(creationData);
    Esys_Free(creationHash);
    Esys_Free(creationTicket);

    Esys_Free(policyDigestTrial);

    Esys_Free(outPublic2);
    Esys_Free(outPrivate2);
    Esys_Free(creationData2);
    Esys_Free(creationHash2);
    Esys_Free(creationTicket2);
    return EXIT_SUCCESS;

error:

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

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

    Esys_Free(outPublic);
    Esys_Free(creationData);
    Esys_Free(creationHash);
    Esys_Free(creationTicket);

    Esys_Free(policyDigestTrial);

    Esys_Free(outPublic2);
    Esys_Free(outPrivate2);
    Esys_Free(creationData2);
    Esys_Free(creationHash2);
    Esys_Free(creationTicket2);
    return EXIT_FAILURE;
}

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