/* 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 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_env_t *onion_key, const tor_addr_t *addr, uint16_t port); extend_info_t *extend_info_from_router(const routerinfo_t *r); extend_info_t *extend_info_from_node(const node_t *node); 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(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(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); 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); void retry_bridge_descriptor_fetch_directly(const char *digest); void fetch_bridge_descriptors(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(or_options_t *options); void entries_retry_all(or_options_t *options); 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); int circuit_build_times_get_bw_scale(networkstatus_t *ns); #endif