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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) 2007-2011, The Tor Project, Inc. */
- /* See LICENSE for licensing information */
- /**
- * \file circuitbuild.h
- * \brief Header file for circuitbuild.c.
- **/
- #ifndef _TOR_CIRCUITBUILD_H
- #define _TOR_CIRCUITBUILD_H
- /** Represents a pluggable transport proxy used by a bridge. */
- typedef struct {
- /** SOCKS version: One of PROXY_SOCKS4, PROXY_SOCKS5. */
- int socks_version;
- /** Name of pluggable transport protocol */
- char *name;
- /** Address of proxy */
- tor_addr_t addr;
- /** Port of proxy */
- uint16_t port;
- /** Boolean: We are re-parsing our transport list, and we are going to remove
- * this one if we don't find it in the list of configured transports. */
- unsigned marked_for_removal : 1;
- } transport_t;
- char *circuit_list_path(origin_circuit_t *circ, int verbose);
- char *circuit_list_path_for_controller(origin_circuit_t *circ);
- void circuit_log_path(int severity, unsigned int domain,
- origin_circuit_t *circ);
- void circuit_rep_hist_note_result(origin_circuit_t *circ);
- origin_circuit_t *origin_circuit_init(uint8_t purpose, int flags);
- origin_circuit_t *circuit_establish_circuit(uint8_t purpose,
- extend_info_t *exit,
- int flags);
- int circuit_handle_first_hop(origin_circuit_t *circ);
- void circuit_n_conn_done(or_connection_t *or_conn, int status);
- int inform_testing_reachability(void);
- int circuit_timeout_want_to_count_circ(origin_circuit_t *circ);
- int circuit_send_next_onion_skin(origin_circuit_t *circ);
- void circuit_note_clock_jumped(int seconds_elapsed);
- int circuit_extend(cell_t *cell, circuit_t *circ);
- int circuit_init_cpath_crypto(crypt_path_t *cpath, const char *key_data,
- int reverse);
- int circuit_finish_handshake(origin_circuit_t *circ, uint8_t cell_type,
- const uint8_t *reply);
- int circuit_truncated(origin_circuit_t *circ, crypt_path_t *layer);
- int onionskin_answer(or_circuit_t *circ, uint8_t cell_type,
- const char *payload, const char *keys);
- int circuit_all_predicted_ports_handled(time_t now, int *need_uptime,
- int *need_capacity);
- int circuit_append_new_exit(origin_circuit_t *circ, extend_info_t *info);
- int circuit_extend_to_new_exit(origin_circuit_t *circ, extend_info_t *info);
- void onion_append_to_cpath(crypt_path_t **head_ptr, crypt_path_t *new_hop);
- extend_info_t *extend_info_alloc(const char *nickname, const char *digest,
- crypto_pk_t *onion_key,
- const tor_addr_t *addr, uint16_t port);
- extend_info_t *extend_info_from_router(const routerinfo_t *r,
- int for_direct_connect);
- extend_info_t *extend_info_from_node(const node_t *node,
- int for_direct_connect);
- extend_info_t *extend_info_dup(extend_info_t *info);
- void extend_info_free(extend_info_t *info);
- const node_t *build_state_get_exit_node(cpath_build_state_t *state);
- const char *build_state_get_exit_nickname(cpath_build_state_t *state);
- void entry_guards_compute_status(const or_options_t *options, time_t now);
- int entry_guard_register_connect_status(const char *digest, int succeeded,
- int mark_relay_status, time_t now);
- void entry_nodes_should_be_added(void);
- int entry_list_is_constrained(const or_options_t *options);
- const node_t *choose_random_entry(cpath_build_state_t *state);
- int entry_guards_parse_state(or_state_t *state, int set, char **msg);
- void entry_guards_update_state(or_state_t *state);
- int getinfo_helper_entry_guards(control_connection_t *conn,
- const char *question, char **answer,
- const char **errmsg);
- void mark_bridge_list(void);
- void sweep_bridge_list(void);
- void mark_transport_list(void);
- void sweep_transport_list(void);
- int routerinfo_is_a_configured_bridge(const routerinfo_t *ri);
- int node_is_a_configured_bridge(const node_t *node);
- void learned_router_identity(const tor_addr_t *addr, uint16_t port,
- const char *digest);
- void bridge_add_from_config(const tor_addr_t *addr, uint16_t port,
- const char *digest,
- const char *transport_name);
- void retry_bridge_descriptor_fetch_directly(const char *digest);
- void fetch_bridge_descriptors(const or_options_t *options, time_t now);
- void learned_bridge_descriptor(routerinfo_t *ri, int from_cache);
- int any_bridge_descriptors_known(void);
- int any_pending_bridge_descriptor_fetches(void);
- int entries_known_but_down(const or_options_t *options);
- void entries_retry_all(const or_options_t *options);
- int any_bridges_dont_support_microdescriptors(void);
- void entry_guards_free_all(void);
- extern circuit_build_times_t circ_times;
- int circuit_build_times_enough_to_compute(circuit_build_times_t *cbt);
- void circuit_build_times_update_state(circuit_build_times_t *cbt,
- or_state_t *state);
- int circuit_build_times_parse_state(circuit_build_times_t *cbt,
- or_state_t *state);
- void circuit_build_times_count_timeout(circuit_build_times_t *cbt,
- int did_onehop);
- int circuit_build_times_count_close(circuit_build_times_t *cbt,
- int did_onehop, time_t start_time);
- void circuit_build_times_set_timeout(circuit_build_times_t *cbt);
- int circuit_build_times_add_time(circuit_build_times_t *cbt,
- build_time_t time);
- int circuit_build_times_needs_circuits(circuit_build_times_t *cbt);
- int circuit_build_times_needs_circuits_now(circuit_build_times_t *cbt);
- void circuit_build_times_init(circuit_build_times_t *cbt);
- void circuit_build_times_new_consensus_params(circuit_build_times_t *cbt,
- networkstatus_t *ns);
- double circuit_build_times_timeout_rate(const circuit_build_times_t *cbt);
- double circuit_build_times_close_rate(const circuit_build_times_t *cbt);
- #ifdef CIRCUIT_PRIVATE
- double circuit_build_times_calculate_timeout(circuit_build_times_t *cbt,
- double quantile);
- build_time_t circuit_build_times_generate_sample(circuit_build_times_t *cbt,
- double q_lo, double q_hi);
- void circuit_build_times_initial_alpha(circuit_build_times_t *cbt,
- double quantile, double time_ms);
- int circuit_build_times_update_alpha(circuit_build_times_t *cbt);
- double circuit_build_times_cdf(circuit_build_times_t *cbt, double x);
- void circuitbuild_running_unit_tests(void);
- void circuit_build_times_reset(circuit_build_times_t *cbt);
- /* Network liveness functions */
- int circuit_build_times_network_check_changed(circuit_build_times_t *cbt);
- #endif
- /* Network liveness functions */
- void circuit_build_times_network_is_live(circuit_build_times_t *cbt);
- int circuit_build_times_network_check_live(circuit_build_times_t *cbt);
- void circuit_build_times_network_circ_success(circuit_build_times_t *cbt);
- /* DOCDOC circuit_build_times_get_bw_scale */
- int circuit_build_times_get_bw_scale(networkstatus_t *ns);
- void clear_transport_list(void);
- int transport_add_from_config(const tor_addr_t *addr, uint16_t port,
- const char *name, int socks_ver);
- int transport_add(transport_t *t);
- void transport_free(transport_t *transport);
- transport_t *transport_new(const tor_addr_t *addr, uint16_t port,
- const char *name, int socks_ver);
- /* DOCDOC find_transport_name_by_bridge_addrport */
- const char *find_transport_name_by_bridge_addrport(const tor_addr_t *addr,
- uint16_t port);
- int find_transport_by_bridge_addrport(const tor_addr_t *addr, uint16_t port,
- const transport_t **transport);
- transport_t *transport_get_by_name(const char *name);
- int validate_pluggable_transports_config(void);
- #endif
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