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/*
*
* Copyright 2018 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPC_CORE_TSI_ALTS_HANDSHAKER_ALTS_TSI_HANDSHAKER_H
#define GRPC_CORE_TSI_ALTS_HANDSHAKER_ALTS_TSI_HANDSHAKER_H
#include <grpc/support/port_platform.h>
#include <grpc/grpc.h>
#include "src/core/lib/iomgr/pollset_set.h"
#include "src/core/lib/security/credentials/alts/grpc_alts_credentials_options.h"
#include "src/core/tsi/alts/handshaker/alts_handshaker_client.h"
#include "src/core/tsi/alts/handshaker/alts_handshaker_service_api_util.h"
#include "src/core/tsi/alts_transport_security.h"
#include "src/core/tsi/transport_security.h"
#include "src/core/tsi/transport_security_interface.h"
#define TSI_ALTS_SERVICE_ACCOUNT_PEER_PROPERTY "service_accont"
#define TSI_ALTS_CERTIFICATE_TYPE "ALTS"
#define TSI_ALTS_RPC_VERSIONS "rpc_versions"
const size_t kTsiAltsNumOfPeerProperties = 3;
typedef struct alts_tsi_handshaker alts_tsi_handshaker;
/**
* This method creates a ALTS TSI handshaker instance.
*
* - options: ALTS credentials options containing information passed from TSI
* caller (e.g., rpc protocol versions).
* - target_name: the name of the endpoint that the channel is connecting to,
* and will be used for secure naming check.
* - handshaker_service_url: address of ALTS handshaker service in the format of
* "host:port".
* - is_client: boolean value indicating if the handshaker is used at the client
* (is_client = true) or server (is_client = false) side.
* - interested_parties: set of pollsets interested in this connection.
* - self: address of ALTS TSI handshaker instance to be returned from the
* method.
*
* It returns TSI_OK on success and an error status code on failure. Note that
* if interested_parties is nullptr, a dedicated TSI thread will be created and
* used.
*/
tsi_result alts_tsi_handshaker_create(
const grpc_alts_credentials_options* options, const char* target_name,
const char* handshaker_service_url, bool is_client,
grpc_pollset_set* interested_parties, tsi_handshaker** self);
/**
* This method creates an ALTS TSI handshaker result instance.
*
* - resp: data received from the handshaker service.
* - is_client: a boolean value indicating if the result belongs to a
* client or not.
* - result: address of ALTS TSI handshaker result instance.
*/
tsi_result alts_tsi_handshaker_result_create(grpc_gcp_handshaker_resp* resp,
bool is_client,
tsi_handshaker_result** result);
/**
* This method sets unused bytes of ALTS TSI handshaker result instance.
*
* - result: an ALTS TSI handshaker result instance.
* - recv_bytes: data received from the handshaker service.
* - bytes_consumed: size of data consumed by the handshaker service.
*/
void alts_tsi_handshaker_result_set_unused_bytes(tsi_handshaker_result* result,
grpc_slice* recv_bytes,
size_t bytes_consumed);
/**
* This method returns a boolean value indicating if an ALTS TSI handshaker
* has been shutdown or not.
*/
bool alts_tsi_handshaker_has_shutdown(alts_tsi_handshaker* handshaker);
#endif /* GRPC_CORE_TSI_ALTS_HANDSHAKER_ALTS_TSI_HANDSHAKER_H */
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