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/* Copyright (c) 2001 Matej Pfajfar.
* Copyright (c) 2001-2004, Roger Dingledine.
* Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
* Copyright (c) 2007-2020, The Tor Project, Inc. */
/* See LICENSE for licensing information */
/**
* @file circuitbuild_relay.h
* @brief Header for feature/relay/circuitbuild_relay.c
**/
#ifndef TOR_FEATURE_RELAY_CIRCUITBUILD_RELAY_H
#define TOR_FEATURE_RELAY_CIRCUITBUILD_RELAY_H
#include "lib/cc/torint.h"
#include "lib/log/log.h"
#include "app/config/config.h"
struct cell_t;
struct created_cell_t;
struct circuit_t;
struct or_circuit_t;
struct extend_cell_t;
/* Log a protocol warning about getting an extend cell on a client. */
static inline void
circuitbuild_warn_client_extend(void)
{
log_fn(LOG_PROTOCOL_WARN, LD_PROTOCOL,
"Got an extend cell, but running as a client. Closing.");
}
#ifdef HAVE_MODULE_RELAY
int circuit_extend(struct cell_t *cell, struct circuit_t *circ);
int onionskin_answer(struct or_circuit_t *circ,
const struct created_cell_t *created_cell,
const char *keys, size_t keys_len,
const uint8_t *rend_circ_nonce);
#else /* !defined(HAVE_MODULE_RELAY) */
static inline int
circuit_extend(struct cell_t *cell, struct circuit_t *circ)
{
(void)cell;
(void)circ;
circuitbuild_warn_client_extend();
return -1;
}
static inline int
onionskin_answer(struct or_circuit_t *circ,
const struct created_cell_t *created_cell,
const char *keys, size_t keys_len,
const uint8_t *rend_circ_nonce)
{
(void)circ;
(void)created_cell;
(void)keys;
(void)keys_len;
(void)rend_circ_nonce;
tor_assert_nonfatal_unreached();
return -1;
}
#endif /* defined(HAVE_MODULE_RELAY) */
#ifdef TOR_UNIT_TESTS
STATIC int circuit_extend_state_valid_helper(const struct circuit_t *circ);
STATIC int circuit_extend_add_ed25519_helper(struct extend_cell_t *ec);
STATIC int circuit_extend_lspec_valid_helper(const struct extend_cell_t *ec,
const struct circuit_t *circ);
STATIC const tor_addr_port_t * circuit_choose_ip_ap_for_extend(
const tor_addr_port_t *ipv4_ap,
const tor_addr_port_t *ipv6_ap);
STATIC void circuit_open_connection_for_extend(const struct extend_cell_t *ec,
struct circuit_t *circ,
int should_launch);
#endif /* defined(TOR_UNIT_TESTS) */
#endif /* !defined(TOR_FEATURE_RELAY_CIRCUITBUILD_RELAY_H) */
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