text: /* SPDX-License-Identifier: BSD-2-Clause */
  /*******************************************************************************
   * Copyright 2017-2018, Fraunhofer SIT sponsored by Infineon Technologies AG
   * All rights reserved.
   * Copyright 2019, Intel Corporation
   * Copyright (c) 2019, Wind River Systems.
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions are met:
   *
   * 1. Redistributions of source code must retain the above copyright notice,
   * this list of conditions and the following disclaimer.
   *
   * 2. Redistributions in binary form must reproduce the above copyright notice,
   * this list of conditions and the following disclaimer in the documentation
   * and/or other materials provided with the distribution.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
   * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
   * THE POSSIBILITY OF SUCH DAMAGE.
   *******************************************************************************/
  
  #ifdef HAVE_CONFIG_H
  #include <config.h>
  #endif
  
  #include <stdlib.h>
  #include <errno.h>
  #include <string.h>
  #include <inttypes.h>
  
  #include "tctildr.h"
  #include "tss2_tcti_mssim.h"
  #include "tss2_tcti_swtpm.h"
  #ifdef _WIN32
  #include "tss2_tcti_tbs.h"
  #else /* _WIN32 */
  #include "tss2_tcti_device.h"
  #endif
  #define LOGMODULE tcti
  #include "util/log.h"
  
  #define ARRAY_SIZE(X) (sizeof(X)/sizeof(X[0]))
  #define NAME_ARRAY_SIZE 3
  
  struct {
      const char *names [NAME_ARRAY_SIZE];
      TSS2_TCTI_INIT_FUNC init;
      char *conf;
      char *description;
  } tctis [] = {
  #ifdef _WIN32
      {
          .names = {
              "libtss2-tcti-tbs.so.0",
              "libtss2-tcti-tbs.so",
              "tbs",
          },
          .init = Tss2_Tcti_Tbs_Init,
          .description = "Access to TBS",
      },
  #elif defined (__VXWORKS__)
      {
          .names = {
              "libtss2-tcti-device.so.0",
              "libtss2-tcti-device.so",
              "device",
          },
          .init = Tss2_Tcti_Device_Init,
          .conf = "/tpm0",
          .description = "Access to /tpm0",
      },
  #else /* _WIN32 */
  #ifdef TCTI_DEVICE
      {
          .names = {
              "libtss2-tcti-device.so.0",
              "libtss2-tcti-device.so",
              "device",
          },
          .init = Tss2_Tcti_Device_Init,
          .conf = "/dev/tpmrm0",
          .description = "Access to /dev/tpmrm0",
      },
      {
          .names = {
              "libtss2-tcti-device.so.0",
              "libtss2-tcti-device.so",
              "device",
          },
          .init = Tss2_Tcti_Device_Init,
          .conf = "/dev/tpm0",
          .description = "Access to /dev/tpm0",
      },
  #endif /* TCTI_DEVICE */
  #endif /* _WIN32 */
  #ifdef TCTI_SWTPM
      {
          .names = {
              "libtss2-tcti-swtpm.so.0",
              "libtss2-tcti-swtpm.so",
              "swtpm",
          },
          .init = Tss2_Tcti_Swtpm_Init,
          .description = "Access to TPM software simulator, default conf",
      },
  #endif /* TCTI_SWTPM */
  #ifdef TCTI_MSSIM
      {
          .names = {
              "libtss2-tcti-mssim.so.0",
              "libtss2-tcti-mssim.so",
              "mssim",
          },
          .init = Tss2_Tcti_Mssim_Init,
          .description = "Access to simulator using MS protocol, default conf",
      },
  #endif /* TCTI_MSSIM */
  };
  TSS2_RC
  tctildr_get_default(TSS2_TCTI_CONTEXT ** tcticontext, void **dlhandle)
  {
      TSS2_RC rc;
  
      UNUSED(dlhandle);
      if (tcticontext == NULL) {
          LOG_ERROR("tcticontext must not be NULL");
          return TSS2_TCTI_RC_BAD_REFERENCE;
      }
      *tcticontext = NULL;
  
      for (size_t i = 0; i < ARRAY_SIZE(tctis); i++) {
          LOG_DEBUG("Attempting to connect using standard TCTI: %s",
                    tctis[i].description);
          rc = tcti_from_init (tctis[i].init,
                               tctis[i].conf,
                               tcticontext);
          if (rc == TSS2_RC_SUCCESS)
              return TSS2_RC_SUCCESS;
          LOG_DEBUG("Failed to load standard TCTI number %zu", i);
      }
  
      LOG_ERROR("No standard TCTI could be loaded");
      return TSS2_TCTI_RC_IO_ERROR;
  }
  TSS2_RC
  tctildr_get_tcti (const char *name,
                    const char* conf,
                    TSS2_TCTI_CONTEXT **tcti,
                    void **data)
  {
      TSS2_RC rc;
  
      if (tcti == NULL) {
          LOG_ERROR("tcticontext must not be NULL");
          return TSS2_TCTI_RC_BAD_REFERENCE;
      }
      *tcti = NULL;
      if (name == NULL) {
          return tctildr_get_default (tcti, data);
      }
  
      for (size_t i = 0; i < ARRAY_SIZE(tctis); ++i) {
          for (size_t j = 0; j < NAME_ARRAY_SIZE; ++j) {
              if (strcmp (name, tctis[i].names[j]))
                  continue;
              LOG_DEBUG("initializing TCTI with name \"%s\"",
                        tctis[i].names[j]);
              rc = tcti_from_init (tctis[i].init, conf, tcti);
              if (rc == TSS2_RC_SUCCESS)
                  return TSS2_RC_SUCCESS;
          }
      }
      LOG_ERROR("Unable to initialize TCTI with name: \"%s\"", name);
      return TSS2_TCTI_RC_IO_ERROR;
  }
  
  void
  tctildr_finalize_data(void **data)
  {
      UNUSED(data);
      return;
  }
  
  TSS2_RC
  tctildr_get_info (const char *name,
                    const TSS2_TCTI_INFO **info,
                    void **data)
  {
      UNUSED(name);
      UNUSED(info);
      UNUSED(data);
      return TSS2_TCTI_RC_NOT_SUPPORTED;
  }
  