| /* 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" |
| |
| #define FAPI_MAX_APP_DATA_SIZE 10*1024*1024 |
| |
| /** One-Call function for Fapi_SetAppData |
| * |
| * Associates an arbitrary data blob with a given object. |
| * |
| * @param[in,out] context The FAPI_CONTEXT |
| * @param[in] path The path to the object the blob is associated with |
| * @param[in] appData The blob to associate with the object. May be NULL |
| * @param[in] appDataSize The size of appData in bytes. Must be 0 if appData is |
| * NULL |
| * |
| * @retval TSS2_RC_SUCCESS: if the function call was a success. |
| * @retval TSS2_FAPI_RC_BAD_REFERENCE: if context or path is NULL or if appData |
| * is NULL and appDataSize is not 0. |
| * @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_BAD_VALUE if an invalid value was passed into |
| * the function. |
| * @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_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_SetAppData( |
| FAPI_CONTEXT *context, |
| char const *path, |
| uint8_t const *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_SetAppData_Async(context, path, appData, appDataSize); |
| return_if_error_reset_state(r, "SetAppData"); |
| |
| 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_SetAppData_Finish(context); |
| } while (base_rc(r) == TSS2_BASE_RC_TRY_AGAIN); |
| |
| return_if_error_reset_state(r, "SetAppData"); |
| |
| LOG_TRACE("finished"); |
| return TSS2_RC_SUCCESS; |
| } |
| |
| /** One-Call function for Fapi_SetAppData |
| * |
| * Associates an arbitrary data blob with a given object. |
| * |
| * Call Fapi_SetAppData_Finish to finish the execution of this command. |
| * |
| * @param[in,out] context The FAPI_CONTEXT |
| * @param[in] path The path to the object the blob is associated with |
| * @param[in] appData The blob to associate with the object. May be NULL |
| * @param[in] appDataSize The size of appData in bytes. Must be 0 if appData is |
| * NULL |
| * |
| * @retval TSS2_RC_SUCCESS: if the function call was a success. |
| * @retval TSS2_FAPI_RC_BAD_REFERENCE: if context or path is NULL or if appData |
| * is NULL and appDataSize is not 0. |
| * @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_BAD_VALUE if an invalid value was passed into |
| * the function. |
| * @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_NOT_PROVISIONED FAPI was not provisioned. |
| */ |
| TSS2_RC |
| Fapi_SetAppData_Async( |
| FAPI_CONTEXT *context, |
| char const *path, |
| uint8_t const *appData, |
| size_t appDataSize) |
| { |
| LOG_TRACE("called for context:%p", context); |
| LOG_TRACE("path: %s", path); |
| if (appData) { |
| LOGBLOB_TRACE(appData, appDataSize, "appData"); |
| } else { |
| LOG_TRACE("appData: (null) appDataSize: %zi", appDataSize); |
| } |
| |
| TSS2_RC r; |
| |
| /* Check for NULL parameters */ |
| check_not_null(context); |
| check_not_null(path); |
| |
| /* App data is restricted to 10MB. */ |
| if (appDataSize > FAPI_MAX_APP_DATA_SIZE) { |
| LOG_ERROR("Only 10MB are allowd for app data."); |
| return TSS2_FAPI_RC_BAD_VALUE; |
| } |
| |
| /* Check for invalid parameters */ |
| if (!appData && appDataSize != 0) { |
| return_error(TSS2_FAPI_RC_BAD_VALUE, |
| "NULL-pointer passed for appData, though appDataSize != 0."); |
| } |
| |
| /* Helpful alias pointers */ |
| IFAPI_Path_SetDescription * command = &context->cmd.path_set_info; |
| |
| /* Copy parameters to context for use during _Finish. */ |
| strdup_check(command->object_path, path, r, error_cleanup); |
| |
| if (appDataSize > 0) { |
| command->appData.buffer = malloc(appDataSize); |
| goto_if_null2(command->appData.buffer, "Out of memory.", |
| r, TSS2_FAPI_RC_MEMORY, error_cleanup); |
| |
| memcpy(&command->appData.buffer[0], appData, appDataSize); |
| } else { |
| command->appData.buffer = NULL; |
| } |
| command->appData.size = appDataSize; |
| |
| /* Load the current metadata for the object from keystore. */ |
| r = ifapi_keystore_load_async(&context->keystore, &context->io, path); |
| return_if_error2(r, "Could not open: %s", path); |
| |
| /* Initialize the context state for this operation. */ |
| context->state = APP_DATA_SET_READ; |
| LOG_TRACE("finished"); |
| return TSS2_RC_SUCCESS; |
| |
| error_cleanup: |
| /* Cleanup duplicated input parameters that were copied before. */ |
| SAFE_FREE(command->object_path); |
| SAFE_FREE(command->appData.buffer); |
| return r; |
| } |
| |
| /** Asynchronous finish function for Fapi_SetAppData |
| * |
| * This function should be called after a previous Fapi_SetAppData_Async. |
| * |
| * @param[in,out] context The FAPI_CONTEXT |
| * |
| * @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. |
| * @retval TSS2_FAPI_RC_PATH_NOT_FOUND if a FAPI object path was not found |
| * during authorization. |
| */ |
| TSS2_RC |
| Fapi_SetAppData_Finish( |
| FAPI_CONTEXT *context) |
| { |
| LOG_TRACE("called for context:%p", context); |
| |
| TSS2_RC r; |
| |
| /* Check for NULL parameters */ |
| check_not_null(context); |
| |
| /* Helpful alias pointers */ |
| IFAPI_Path_SetDescription * command = &context->cmd.path_set_info; |
| IFAPI_OBJECT *object = &command->object; |
| UINT8_ARY *objAppData; |
| |
| switch (context->state) { |
| statecase(context->state, APP_DATA_SET_READ); |
| r = ifapi_keystore_load_finish(&context->keystore, &context->io, object); |
| return_try_again(r); |
| return_if_error_reset_state(r, "read_finish failed"); |
| |
| r = ifapi_initialize_object(context->esys, object); |
| goto_if_error_reset_state(r, "Initialize key object", error_cleanup); |
| |
| /* Depending on the object type get the correct appData pointer. */ |
| 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.", error_cleanup); |
| } |
| |
| /* If exists delete old appData */ |
| SAFE_FREE(objAppData->buffer); |
| |
| /* Set new appData for object */ |
| objAppData->size = command->appData.size; |
| objAppData->buffer = command->appData.buffer; |
| |
| /* Prepare (over-)writing of object */ |
| r = ifapi_keystore_store_async(&context->keystore, &context->io, |
| command->object_path, object); |
| goto_if_error_reset_state(r, "Could not open: %sh", error_cleanup, |
| command->object_path); |
| |
| fallthrough; |
| |
| statecase(context->state, APP_DATA_SET_WRITE); |
| /* Finish writing of object */ |
| r = ifapi_keystore_store_finish(&context->keystore, &context->io); |
| return_try_again(r); |
| return_if_error_reset_state(r, "write_finish failed"); |
| ifapi_cleanup_ifapi_object(object); |
| |
| context->state = _FAPI_STATE_INIT; |
| r = TSS2_RC_SUCCESS; |
| break; |
| |
| statecasedefault(context->state); |
| } |
| |
| error_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); |
| SAFE_FREE(command->object_path); |
| LOG_TRACE("finished"); |
| return r; |
| } |