| /* SPDX-License-Identifier: BSD-2-Clause */ |
| /******************************************************************************* |
| * Copyright 2018-2019, Fraunhofer SIT sponsored by Infineon Technologies AG |
| * All rights reserved. |
| ******************************************************************************/ |
| |
| #ifdef HAVE_CONFIG_H |
| #include <config.h> |
| #endif |
| |
| #include <stdlib.h> |
| #include <errno.h> |
| #include <unistd.h> |
| #include <errno.h> |
| #include <string.h> |
| |
| #include "tss2_fapi.h" |
| #include "fapi_int.h" |
| #include "fapi_util.h" |
| #include "tss2_esys.h" |
| #define LOGMODULE fapi |
| #include "util/log.h" |
| #include "util/aux_util.h" |
| |
| /** One-Call function for Fapi_GetAppData |
| * |
| * Every object has a description field that can be retrieved in order to obtain |
| * additional information in its “path” entry. |
| * |
| * @param[in,out] context The FAPI_CONTEXT |
| * @param[in] path The path to the object for which the appData is returned |
| * @param[out] appData A copy of the appData. May be NULL (callee-allocated) |
| * @param[out] appDataSize The size of the returned AppData. May be NULL |
| * |
| * @retval TSS2_RC_SUCCESS: if the function call was a success. |
| * @retval TSS2_FAPI_RC_BAD_REFERENCE: if context or path is NULL. |
| * @retval TSS2_FAPI_RC_BAD_CONTEXT: if context corruption is detected. |
| * @retval TSS2_FAPI_RC_BAD_PATH: if path does not map to a FAPI entity. |
| * @retval TSS2_FAPI_RC_BAD_SEQUENCE: if the context has an asynchronous |
| * operation already pending. |
| * @retval TSS2_FAPI_RC_IO_ERROR: if the data cannot be saved. |
| * @retval TSS2_FAPI_RC_MEMORY: if the FAPI cannot allocate enough memory for |
| * internal operations or return parameters. |
| * @retval TSS2_FAPI_RC_NO_TPM if FAPI was initialized in no-TPM-mode via its |
| * config file. |
| * @retval TSS2_FAPI_RC_PATH_NOT_FOUND if a FAPI object path was not found |
| * during authorization. |
| * @retval TSS2_FAPI_RC_KEY_NOT_FOUND if a key was not found. |
| * @retval TSS2_FAPI_RC_BAD_VALUE if an invalid value was passed into |
| * the function. |
| * @retval TSS2_FAPI_RC_TRY_AGAIN if an I/O operation is not finished yet and |
| * this function needs to be called again. |
| * @retval TSS2_FAPI_RC_GENERAL_FAILURE if an internal error occurred. |
| * @retval TSS2_FAPI_RC_NOT_PROVISIONED FAPI was not provisioned. |
| */ |
| TSS2_RC |
| Fapi_GetAppData( |
| FAPI_CONTEXT *context, |
| char const *path, |
| uint8_t **appData, |
| size_t *appDataSize) |
| { |
| LOG_TRACE("called for context:%p", context); |
| |
| TSS2_RC r; |
| |
| /* Check for NULL parameters */ |
| check_not_null(context); |
| check_not_null(path); |
| |
| r = Fapi_GetAppData_Async(context, path); |
| return_if_error_reset_state(r, "Path_SetDescription"); |
| |
| do { |
| /* We wait for file I/O to be ready if the FAPI state automata |
| are in a file I/O state. */ |
| r = ifapi_io_poll(&context->io); |
| return_if_error(r, "Something went wrong with IO polling"); |
| |
| /* Repeatedly call the finish function, until FAPI has transitioned |
| through all execution stages / states of this invocation. */ |
| r = Fapi_GetAppData_Finish(context, appData, appDataSize); |
| } while (base_rc(r) == TSS2_BASE_RC_TRY_AGAIN); |
| |
| return_if_error_reset_state(r, "Path_SetDescription"); |
| |
| LOG_TRACE("finished"); |
| return TSS2_RC_SUCCESS; |
| } |
| |
| /** Asynchronous function for Fapi_GetAppData |
| * |
| * Every object has a description field that can be retrieved in order to obtain |
| * additional information in its “path” entry. |
| * |
| * Call Fapi_GetAppData_Finish to finish the execution of this command. |
| * |
| * @param[in,out] context The FAPI_CONTEXT |
| * @param[in] path The path to the object for which the appData is returned |
| * |
| * @retval TSS2_RC_SUCCESS: if the function call was a success. |
| * @retval TSS2_FAPI_RC_BAD_REFERENCE: if context or path is NULL. |
| * @retval TSS2_FAPI_RC_BAD_CONTEXT: if context corruption is detected. |
| * @retval TSS2_FAPI_RC_BAD_PATH: if path does not map to a FAPI entity. |
| * @retval TSS2_FAPI_RC_BAD_SEQUENCE: if the context has an asynchronous |
| * operation already pending. |
| * @retval TSS2_FAPI_RC_IO_ERROR: if the data cannot be saved. |
| * @retval TSS2_FAPI_RC_MEMORY: if the FAPI cannot allocate enough memory for |
| * internal operations or return parameters. |
| * @retval TSS2_FAPI_RC_NO_TPM if FAPI was initialized in no-TPM-mode via its |
| * config file. |
| * @retval TSS2_FAPI_RC_PATH_NOT_FOUND if a FAPI object path was not found |
| * during authorization. |
| * @retval TSS2_FAPI_RC_KEY_NOT_FOUND if a key was not found. |
| * @retval TSS2_FAPI_RC_BAD_VALUE if an invalid value was passed into |
| * the function. |
| * @retval TSS2_FAPI_RC_NOT_PROVISIONED FAPI was not provisioned. |
| */ |
| TSS2_RC |
| Fapi_GetAppData_Async( |
| FAPI_CONTEXT *context, |
| char const *path) |
| { |
| LOG_TRACE("called for context:%p", context); |
| LOG_TRACE("path: %s", path); |
| |
| TSS2_RC r; |
| |
| /* Check for NULL parameters */ |
| check_not_null(context); |
| check_not_null(path); |
| |
| /* Reset all context-internal session state information. */ |
| r = ifapi_session_init(context); |
| return_if_error(r, "Initialize GetAppData"); |
| |
| /* Load the object metadata from keystore. */ |
| r = ifapi_keystore_load_async(&context->keystore, &context->io, path); |
| return_if_error2(r, "Could not open: %s", path); |
| |
| context->state = PATH_GET_DESCRIPTION_READ; |
| LOG_TRACE("finished"); |
| return TSS2_RC_SUCCESS; |
| } |
| |
| /** Asynchronous finish function for Fapi_GetAppData |
| * |
| * This function should be called after a previous Fapi_GetAppData_Async. |
| * |
| * @param[in,out] context The FAPI_CONTEXT |
| * @param[out] appData A copy of the appData. May be Null (callee-allocated) |
| * @param[out] appDataSize The size of the returned AppData. May be NULL |
| * |
| * @retval TSS2_RC_SUCCESS: if the function call was a success. |
| * @retval TSS2_FAPI_RC_BAD_REFERENCE: if context is NULL. |
| * @retval TSS2_FAPI_RC_BAD_CONTEXT: if context corruption is detected. |
| * @retval TSS2_FAPI_RC_BAD_SEQUENCE: if the context has an asynchronous |
| * operation already pending. |
| * @retval TSS2_FAPI_RC_IO_ERROR: if the data cannot be saved. |
| * @retval TSS2_FAPI_RC_MEMORY: if the FAPI cannot allocate enough memory for |
| * internal operations or return parameters. |
| * @retval TSS2_FAPI_RC_TRY_AGAIN: if the asynchronous operation is not yet |
| * complete. Call this function again later. |
| * @retval TSS2_FAPI_RC_BAD_PATH if a path is used in inappropriate context |
| * or contains illegal characters. |
| * @retval TSS2_FAPI_RC_GENERAL_FAILURE if an internal error occurred. |
| * @retval TSS2_FAPI_RC_BAD_VALUE if an invalid value was passed into |
| * the function. |
| */ |
| TSS2_RC |
| Fapi_GetAppData_Finish( |
| FAPI_CONTEXT *context, |
| uint8_t **appData, |
| size_t *appDataSize) |
| { |
| LOG_TRACE("called for context:%p", context); |
| |
| TSS2_RC r; |
| IFAPI_OBJECT object; |
| UINT8_ARY *objAppData; |
| |
| /* Check for NULL parameters */ |
| check_not_null(context); |
| |
| switch (context->state) { |
| statecase(context->state, PATH_GET_DESCRIPTION_READ); |
| r = ifapi_keystore_load_finish(&context->keystore, &context->io, &object); |
| return_try_again(r); |
| return_if_error_reset_state(r, "read_finish failed"); |
| |
| /* Get the application data from the metadata objects. */ |
| switch (object.objectType) { |
| case IFAPI_KEY_OBJ: |
| objAppData = &object.misc.key.appData; |
| break; |
| case IFAPI_NV_OBJ: |
| objAppData = &object.misc.nv.appData; |
| break; |
| default: |
| goto_error(r, TSS2_FAPI_RC_BAD_PATH, "Object has no app data.", cleanup); |
| } |
| |
| if (appData) { |
| /* Duplicate the application data to be returned to the caller. */ |
| if (objAppData->size) { |
| *appData = malloc(objAppData->size); |
| goto_if_null2(*appData, "Out of memory.", r, TSS2_FAPI_RC_MEMORY, |
| cleanup); |
| memcpy(*appData, &objAppData->buffer[0], |
| objAppData->size); |
| } else { |
| *appData = NULL; |
| } |
| } |
| if (appDataSize) |
| *appDataSize = objAppData->size; |
| |
| context->state = _FAPI_STATE_INIT; |
| r = TSS2_RC_SUCCESS; |
| break; |
| |
| statecasedefault(context->state); |
| } |
| |
| cleanup: |
| /* Cleanup any intermediate results and state stored in the context. */ |
| ifapi_cleanup_ifapi_object(&object); |
| ifapi_cleanup_ifapi_object(&context->loadKey.auth_object); |
| ifapi_cleanup_ifapi_object(context->loadKey.key_object); |
| ifapi_cleanup_ifapi_object(&context->createPrimary.pkey_object); |
| LOG_TRACE("finished"); |
| return r; |
| } |