components/service/crypto/client/caller/packed-c/crypto_caller_import_key.h

/*
 * Copyright (c) 2021, Arm Limited and Contributors. All rights reserved.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */

#ifndef PACKEDC_CRYPTO_CALLER_IMPORT_KEY_H
#define PACKEDC_CRYPTO_CALLER_IMPORT_KEY_H

#include <string.h>
#include <stdlib.h>
#include <psa/crypto.h>
#include <service/common/client/service_client.h>
#include <protocols/rpc/common/packed-c/status.h>
#include <protocols/service/crypto/packed-c/opcodes.h>
#include <protocols/service/crypto/packed-c/key_attributes.h>
#include <protocols/service/crypto/packed-c/import_key.h>
#include <common/tlv/tlv.h>
#include "crypto_caller_key_attributes.h"

#ifdef __cplusplus
extern "C" {
#endif

static inline psa_status_t crypto_caller_import_key(struct service_client *context,
	const psa_key_attributes_t *attributes,
	const uint8_t *data, size_t data_length,
	psa_key_id_t *id)
{
	psa_status_t psa_status = PSA_ERROR_GENERIC_ERROR;
	struct ts_crypto_import_key_in req_msg;
	const size_t req_fixed_len = sizeof(struct ts_crypto_import_key_in);
	size_t req_len = req_fixed_len + tlv_required_space(data_length);

	/* Set default outputs for failure case */
	*id = 0;

	packedc_crypto_caller_translate_key_attributes_to_proto(&req_msg.attributes, attributes);

	struct tlv_record key_record;
	key_record.tag = TS_CRYPTO_IMPORT_KEY_IN_TAG_DATA;
	key_record.length = data_length;
	key_record.value = data;

	rpc_call_handle call_handle;
	uint8_t *req_buf;

	call_handle = rpc_caller_session_begin(context->session, &req_buf, req_len, 0);

	if (call_handle) {

		uint8_t *resp_buf;
		size_t resp_len;
		service_status_t service_status;
		struct tlv_iterator req_iter;

		memcpy(req_buf, &req_msg, req_fixed_len);

		tlv_iterator_begin(&req_iter, &req_buf[req_fixed_len], req_len - req_fixed_len);
		tlv_encode(&req_iter, &key_record);

		context->rpc_status =
			rpc_caller_session_invoke(call_handle, TS_CRYPTO_OPCODE_IMPORT_KEY,
						  &resp_buf, &resp_len, &service_status);

		if (context->rpc_status == RPC_SUCCESS) {

			psa_status = service_status;

			if (psa_status == PSA_SUCCESS) {

				if (resp_len >= sizeof(struct ts_crypto_import_key_out)) {

					struct ts_crypto_import_key_out resp_msg;
					memcpy(&resp_msg, resp_buf, sizeof(struct ts_crypto_import_key_out));
					*id = resp_msg.id;
				}
				else {
					/* Failed to decode response message */
					psa_status = PSA_ERROR_GENERIC_ERROR;
				}
			}
		}

		rpc_caller_session_end(call_handle);
	}

	return psa_status;
}

#ifdef __cplusplus
}
#endif

#endif /* PACKEDC_CRYPTO_CALLER_IMPORT_KEY_H */