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/* Copyright (c) 2017-2019, The Tor Project, Inc. */
/* See LICENSE for licensing information */
/**
* \file hs_circuit.h
* \brief Header file containing circuit data for the whole HS subsytem.
**/
#ifndef TOR_HS_CIRCUIT_H
#define TOR_HS_CIRCUIT_H
#include "core/or/or.h"
#include "lib/crypt_ops/crypto_ed25519.h"
#include "feature/hs/hs_service.h"
/* Cleanup function when the circuit is closed or/and freed. */
void hs_circ_cleanup(circuit_t *circ);
/* Circuit API. */
int hs_circ_service_intro_has_opened(hs_service_t *service,
hs_service_intro_point_t *ip,
const hs_service_descriptor_t *desc,
origin_circuit_t *circ);
void hs_circ_service_rp_has_opened(const hs_service_t *service,
origin_circuit_t *circ);
int hs_circ_launch_intro_point(hs_service_t *service,
const hs_service_intro_point_t *ip,
extend_info_t *ei,
bool direct_conn);
int hs_circ_launch_rendezvous_point(const hs_service_t *service,
const curve25519_public_key_t *onion_key,
const uint8_t *rendezvous_cookie);
void hs_circ_retry_service_rendezvous_point(origin_circuit_t *circ);
origin_circuit_t *hs_circ_service_get_intro_circ(
const hs_service_intro_point_t *ip);
/* Cell API. */
int hs_circ_handle_intro_established(const hs_service_t *service,
const hs_service_intro_point_t *ip,
origin_circuit_t *circ,
const uint8_t *payload,
size_t payload_len);
int hs_circ_handle_introduce2(const hs_service_t *service,
const origin_circuit_t *circ,
hs_service_intro_point_t *ip,
const uint8_t *subcredential,
const uint8_t *payload, size_t payload_len);
int hs_circ_send_introduce1(origin_circuit_t *intro_circ,
origin_circuit_t *rend_circ,
const hs_desc_intro_point_t *ip,
const uint8_t *subcredential);
int hs_circ_send_establish_rendezvous(origin_circuit_t *circ);
/* e2e circuit API. */
int hs_circuit_setup_e2e_rend_circ(origin_circuit_t *circ,
const uint8_t *ntor_key_seed,
size_t seed_len,
int is_service_side);
int hs_circuit_setup_e2e_rend_circ_legacy_client(origin_circuit_t *circ,
const uint8_t *rend_cell_body);
#ifdef HS_CIRCUIT_PRIVATE
STATIC hs_ident_circuit_t *
create_rp_circuit_identifier(const hs_service_t *service,
const uint8_t *rendezvous_cookie,
const curve25519_public_key_t *server_pk,
const hs_ntor_rend_cell_keys_t *keys);
#endif /* defined(HS_CIRCUIT_PRIVATE) */
#endif /* !defined(TOR_HS_CIRCUIT_H) */
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