/* 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 <stdint.h> // for uint8_t
#include <stdlib.h> // for NULL, EXIT_FAILURE, EXIT_SUCCESS, size_t
#include <string.h> // for strstr, strcmp

#include "tss2_common.h"     // for TSS2_RC, BYTE, TSS2_FAPI_RC_BAD_VALUE
#include "tss2_fapi.h"       // for Fapi_Delete, Fapi_CreateKey, Fapi_Provi...
#include "tss2_tpm2_types.h" // for TPM2B_DIGEST

#define LOGMODULE test
#include "test-fapi.h" // for ASSERT, test_invoke_fapi
#include "util/log.h"  // for SAFE_FREE, goto_if_error, UNUSED, retur...

#ifdef FAPI_PASSWORD

#define PASSWORD "abc"

static TSS2_RC
auth_callback(char const *objectPath, char const *description, const char **auth, void *userData) {
    UNUSED(description);
    UNUSED(userData);

    if (strcmp(objectPath, "P_RSA/HS/SRK/mySignKey") != 0) {
        return_error(TSS2_FAPI_RC_BAD_VALUE, "Unexpected path");
    }

    *auth = PASSWORD;
    return TSS2_RC_SUCCESS;
}
#else /*FAPI_PASSWORD */
#define PASSWORD NULL
#endif /* FAPI_PASSWORD */

#ifdef FAPI_DA
#define SIGN_TEMPLATE "sign"
#else
#define SIGN_TEMPLATE "sign, noDa"
#endif

/** Test the FAPI functions for key creation and usage with noda and da flag.
 *
 * Tested FAPI commands:
 *  - Fapi_Provision()
 *  - Fapi_CreateKey()
 *  - Fapi_SetAuthCB()
 *  - Fapi_Sign()
 *  - Fapi_Delete()
 *
 * @param[in,out] context The FAPI_CONTEXT.
 * @retval EXIT_FAILURE
 * @retval EXIT_SUCCESS
 */
int
test_fapi_key_create_ckda_sign(FAPI_CONTEXT *context) {
    TSS2_RC r;

    uint8_t *signature = NULL;
    char    *publicKey = NULL;
    char    *certificate = NULL;

    r = Fapi_Provision(context, NULL, NULL, NULL);
    goto_if_error(r, "Error Fapi_Provision", error);

    r = Fapi_CreateKey(context, "HS/SRK/mySignKey", SIGN_TEMPLATE, "", PASSWORD);
    goto_if_error(r, "Error Fapi_CreateKey", error);

    r = Fapi_SetCertificate(context, "HS/SRK/mySignKey",
                            "-----BEGIN "
                            "CERTIFICATE-----[...]-----END CERTIFICATE-----");
    goto_if_error(r, "Error Fapi_CreateKey", error);

    size_t signatureSize = 0;

    TPM2B_DIGEST digest = { .size = 32,
                            .buffer = {
                                0x67, 0x68, 0x03, 0x3e, 0x21, 0x64, 0x68, 0x24, 0x7b, 0xd0, 0x31,
                                0xa0, 0xa2, 0xd9, 0x87, 0x6d, 0x79, 0x81, 0x8f, 0x8f, 0x00, 0x00,
                                0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
                            } };

#ifdef FAPI_PASSWORD
    r = Fapi_SetAuthCB(context, auth_callback, "");
    goto_if_error(r, "Error SetPolicyAuthCallback", error);
#endif

    r = Fapi_Sign(context, "HS/SRK/mySignKey", NULL, &digest.buffer[0], digest.size, &signature,
                  &signatureSize, &publicKey, &certificate);
    goto_if_error(r, "Error Fapi_Sign", error);
    ASSERT(signature != NULL);
    ASSERT(publicKey != NULL);
    ASSERT(certificate != NULL);
    ASSERT(strstr(publicKey, "BEGIN PUBLIC KEY"));
    ASSERT(strstr(certificate, "BEGIN CERTIFICATE"));

    r = Fapi_Delete(context, "/");
    goto_if_error(r, "Error Fapi_Delete", error);

    SAFE_FREE(signature);
    SAFE_FREE(publicKey);
    SAFE_FREE(certificate);

    return EXIT_SUCCESS;

error:
    Fapi_Delete(context, "/");
    SAFE_FREE(signature);
    SAFE_FREE(publicKey);
    SAFE_FREE(certificate);
    return EXIT_FAILURE;
}

int
test_invoke_fapi(FAPI_CONTEXT *fapi_context) {
    return test_fapi_key_create_ckda_sign(fapi_context);
}
