mirror of
https://gitlab.torproject.org/tpo/core/tor.git
synced 2024-11-24 04:13:28 +01:00
Turn all of run_scheduled_events() into a bunch of periodic events
This patch is designed to look good when you see it through 'diff -b': it mostly leaves entries in the same order, and leaves the code unmodified.
This commit is contained in:
Nick Mathewson
parent
e8b459a2fa
commit
9f31908a40
753
src/or/main.c
753
src/or/main.c
@ -1231,43 +1231,87 @@ get_signewnym_epoch(void)
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/** DOCDOC */
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static int periodic_events_initialized = 0;
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#define CALLBACK(name) \
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static int name ## _callback(time_t, const or_options_t *)
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CALLBACK(rotate_onion_key);
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CALLBACK(check_ed_keys);
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CALLBACK(launch_descriptor_fetches);
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CALLBACK(reset_descriptor_failures);
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CALLBACK(fetch_bridge_descriptors);
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CALLBACK(rotate_x509_certificate);
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CALLBACK(add_entropy);
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CALLBACK(enable_accounting);
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CALLBACK(launch_reachability_tests);
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CALLBACK(downrate_stability);
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CALLBACK(save_stability);
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CALLBACK(check_authority_cert);
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CALLBACK(check_expired_networkstatus);
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CALLBACK(write_stats_file);
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CALLBACK(record_bridge_stats);
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CALLBACK(clean_caches);
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CALLBACK(rend_cache_failure_clean);
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CALLBACK(retry_dns);
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CALLBACK(check_descriptor);
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CALLBACK(check_for_reachability_bw);
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CALLBACK(fetch_networkstatus);
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CALLBACK(dirvote_act);
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CALLBACK(expire_misc);
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CALLBACK(retry_listeners);
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CALLBACK(build_circuits);
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CALLBACK(expire_old_ciruits_serverside);
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CALLBACK(housekeeping);
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CALLBACK(check_dns_honesty);
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CALLBACK(write_bridge_ns);
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CALLBACK(check_fw_helper_app);
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CALLBACK(pt_configuration);
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CALLBACK(heartbeat);
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#undef CALLBACK
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#define CALLBACK(name) PERIODIC_EVENT(name)
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static periodic_event_item_t periodic_events[] = {
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CALLBACK(rotate_onion_key),
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CALLBACK(check_ed_keys),
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CALLBACK(launch_descriptor_fetches),
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CALLBACK(reset_descriptor_failures),
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CALLBACK(fetch_bridge_descriptors),
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CALLBACK(rotate_x509_certificate),
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CALLBACK(add_entropy),
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CALLBACK(enable_accounting),
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CALLBACK(launch_reachability_tests),
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CALLBACK(downrate_stability),
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CALLBACK(save_stability),
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CALLBACK(check_authority_cert),
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CALLBACK(check_expired_networkstatus),
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CALLBACK(write_stats_file),
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CALLBACK(record_bridge_stats),
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CALLBACK(clean_caches),
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CALLBACK(rend_cache_failure_clean),
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CALLBACK(retry_dns),
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CALLBACK(check_descriptor),
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CALLBACK(check_for_reachability_bw),
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CALLBACK(fetch_networkstatus),
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CALLBACK(dirvote_act),
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CALLBACK(expire_misc),
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CALLBACK(retry_listeners),
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CALLBACK(build_circuits),
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CALLBACK(expire_old_ciruits_serverside),
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CALLBACK(housekeeping),
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CALLBACK(check_dns_honesty),
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CALLBACK(write_bridge_ns),
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CALLBACK(check_fw_helper_app),
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CALLBACK(pt_configuration),
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CALLBACK(heartbeat),
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END_OF_PERIODIC_EVENTS
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};
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#undef CALLBACK
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typedef struct {
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time_t last_rotated_x509_certificate;
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time_t check_v3_certificate;
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time_t check_listeners;
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time_t download_networkstatus;
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time_t try_getting_descriptors;
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time_t reset_descriptor_failures;
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time_t add_entropy;
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time_t write_bridge_status_file;
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time_t downrate_stability;
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time_t save_stability;
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time_t clean_caches;
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time_t recheck_bandwidth;
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time_t check_for_expired_networkstatus;
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time_t write_stats_files;
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time_t write_bridge_stats;
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time_t check_port_forwarding;
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time_t launch_reachability_tests;
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time_t retry_dns_init;
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time_t next_heartbeat;
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time_t check_descriptor;
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/** When do we next launch DNS wildcarding checks? */
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time_t check_for_correct_dns;
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/** When do we next make sure our Ed25519 keys aren't about to expire? */
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time_t check_ed_keys;
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static periodic_event_item_t *check_descriptor_event=NULL;
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static periodic_event_item_t *fetch_networkstatus_event=NULL;
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static periodic_event_item_t *launch_descriptor_fetches_event=NULL;
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static periodic_event_item_t *check_dns_honesty_event=NULL;
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} time_to_t;
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static time_to_t time_to = {
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
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};
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/** Reset all the time_to's so we'll do all our actions again as if we
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/** Reset all the periodic events so we'll do all our actions again as if we
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* just started up.
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* Useful if our clock just moved back a long time from the future,
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* so we don't wait until that future arrives again before acting.
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@ -1276,12 +1320,23 @@ void
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reset_all_main_loop_timers(void)
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{
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int i;
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memset(&time_to, 0, sizeof(time_to));
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for (i = 0; periodic_events[i].name; ++i) {
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periodic_event_reschedule(&periodic_events[i]);
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}
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}
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/**DOCDOC*/
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static periodic_event_item_t *
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find_periodic_event(const char *name)
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{
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int i;
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for (i = 0; periodic_events[i].name; ++i) {
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if (strcmp(name, periodic_events[i].name) == 0)
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return &periodic_events[i];
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}
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return NULL;
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}
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/** DOCDOC */
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static void
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initialize_periodic_events_cb(evutil_socket_t fd, short events, void *data)
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@ -1302,6 +1357,14 @@ initialize_periodic_events(void)
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tor_assert(periodic_events_initialized == 0);
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periodic_events_initialized = 1;
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#define NAMED_CALLBACK(name) \
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STMT_BEGIN name ## _event = find_periodic_event( #name ); STMT_END
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NAMED_CALLBACK(check_descriptor);
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NAMED_CALLBACK(fetch_networkstatus);
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NAMED_CALLBACK(launch_descriptor_fetches);
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NAMED_CALLBACK(check_dns_honesty);
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struct timeval one_second = { 1, 0 };
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event_base_once(tor_libevent_get_base(), -1, 0,
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initialize_periodic_events_cb, NULL,
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@ -1325,7 +1388,8 @@ teardown_periodic_events(void)
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void
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reschedule_descriptor_update_check(void)
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{
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time_to.check_descriptor = 0;
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tor_assert(check_descriptor_event);
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periodic_event_reschedule(check_descriptor_event);
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}
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/**
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@ -1335,8 +1399,22 @@ reschedule_descriptor_update_check(void)
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void
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reschedule_directory_downloads(void)
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{
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time_to.download_networkstatus = 0;
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time_to.try_getting_descriptors = 0;
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tor_assert(fetch_networkstatus_event);
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tor_assert(launch_descriptor_fetches_event);
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periodic_event_reschedule(fetch_networkstatus_event);
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periodic_event_reschedule(launch_descriptor_fetches_event);
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}
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static inline int
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safe_timer_diff(time_t now, time_t next)
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{
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if (next > now) {
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tor_assert(next - now <= INT_MAX);
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return (int)(next - now);
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} else {
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return 1;
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}
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}
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/** Perform regular maintenance tasks. This function gets run once per
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@ -1345,13 +1423,6 @@ reschedule_directory_downloads(void)
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static void
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run_scheduled_events(time_t now)
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{
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static int should_init_bridge_stats = 1;
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const or_options_t *options = get_options();
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int is_server = server_mode(options);
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int i;
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int have_dir_info;
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/* 0. See if we've been asked to shut down and our timeout has
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* expired; or if our bandwidth limits are exhausted and we
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* should hibernate; or if it's time to wake up from hibernation.
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@ -1368,13 +1439,21 @@ run_scheduled_events(time_t now)
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/* 0c. If we've deferred log messages for the controller, handle them now */
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flush_pending_log_callbacks();
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}
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static int
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rotate_onion_key_callback(time_t now, const or_options_t *options)
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{
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/* 1a. Every MIN_ONION_KEY_LIFETIME seconds, rotate the onion keys,
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* shut down and restart all cpuworkers, and update the directory if
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* necessary.
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*/
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if (is_server &&
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get_onion_key_set_at()+MIN_ONION_KEY_LIFETIME < now) {
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if (server_mode(options)) {
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time_t rotation_time = get_onion_key_set_at()+MIN_ONION_KEY_LIFETIME;
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if (rotation_time > now) {
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return safe_timer_diff(now, rotation_time);
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}
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log_info(LD_GENERAL,"Rotating onion key.");
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rotate_onion_key();
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cpuworkers_rotate_keyinfo();
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@ -1383,9 +1462,15 @@ run_scheduled_events(time_t now)
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}
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if (advertised_server_mode() && !options->DisableNetwork)
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router_upload_dir_desc_to_dirservers(0);
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return MIN_ONION_KEY_LIFETIME;
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}
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return -1;
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}
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if (is_server && time_to.check_ed_keys < now) {
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static int
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check_ed_keys_callback(time_t now, const or_options_t *options)
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{
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if (server_mode(options)) {
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if (should_make_new_ed_keys(options, now)) {
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if (load_ed_keys(options, now) < 0 ||
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generate_ed_link_cert(options, now)) {
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@ -1394,200 +1479,275 @@ run_scheduled_events(time_t now)
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exit(0);
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}
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}
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time_to.check_ed_keys = now + 30;
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return 30;
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}
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return -1;
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}
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if (!should_delay_dir_fetches(options, NULL) &&
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time_to.try_getting_descriptors < now) {
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update_all_descriptor_downloads(now);
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update_extrainfo_downloads(now);
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if (router_have_minimum_dir_info())
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time_to.try_getting_descriptors = now + LAZY_DESCRIPTOR_RETRY_INTERVAL;
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else
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time_to.try_getting_descriptors = now + GREEDY_DESCRIPTOR_RETRY_INTERVAL;
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}
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static int
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launch_descriptor_fetches_callback(time_t now, const or_options_t *options)
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{
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if (should_delay_dir_fetches(options, NULL))
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return -1;
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if (time_to.reset_descriptor_failures < now) {
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router_reset_descriptor_download_failures();
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time_to.reset_descriptor_failures =
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now + DESCRIPTOR_FAILURE_RESET_INTERVAL;
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}
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update_all_descriptor_downloads(now);
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update_extrainfo_downloads(now);
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if (router_have_minimum_dir_info())
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return LAZY_DESCRIPTOR_RETRY_INTERVAL;
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else
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return GREEDY_DESCRIPTOR_RETRY_INTERVAL;
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}
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if (options->UseBridges && !options->DisableNetwork)
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static int
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reset_descriptor_failures_callback(time_t now, const or_options_t *options)
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{
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(void)now;
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(void)options;
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router_reset_descriptor_download_failures();
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return DESCRIPTOR_FAILURE_RESET_INTERVAL;
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}
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static int
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fetch_bridge_descriptors_callback(time_t now, const or_options_t *options)
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{
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if (options->UseBridges && !options->DisableNetwork) {
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fetch_bridge_descriptors(options, now);
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return 1;
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}
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return -1;
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}
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static int
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rotate_x509_certificate_callback(time_t now, const or_options_t *options)
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{
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static int first = 1;
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(void)now;
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(void)options;
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if (first) {
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first = 0;
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return MAX_SSL_KEY_LIFETIME_INTERNAL;
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}
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/* 1b. Every MAX_SSL_KEY_LIFETIME_INTERNAL seconds, we change our
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* TLS context. */
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if (!time_to.last_rotated_x509_certificate)
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time_to.last_rotated_x509_certificate = now;
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if (time_to.last_rotated_x509_certificate +
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MAX_SSL_KEY_LIFETIME_INTERNAL < now) {
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log_info(LD_GENERAL,"Rotating tls context.");
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if (router_initialize_tls_context() < 0) {
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log_warn(LD_BUG, "Error reinitializing TLS context");
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/* XXX is it a bug here, that we just keep going? -RD */
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}
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time_to.last_rotated_x509_certificate = now;
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/* We also make sure to rotate the TLS connections themselves if they've
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* been up for too long -- but that's done via is_bad_for_new_circs in
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* connection_run_housekeeping() above. */
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log_info(LD_GENERAL,"Rotating tls context.");
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if (router_initialize_tls_context() < 0) {
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log_warn(LD_BUG, "Error reinitializing TLS context");
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/* XXX is it a bug here, that we just keep going? -RD */
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}
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if (time_to.add_entropy < now) {
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if (time_to.add_entropy) {
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/* We already seeded once, so don't die on failure. */
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crypto_seed_rng();
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}
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/** How often do we add more entropy to OpenSSL's RNG pool? */
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/* We also make sure to rotate the TLS connections themselves if they've
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* been up for too long -- but that's done via is_bad_for_new_circs in
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* connection_run_housekeeping() above. */
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return MAX_SSL_KEY_LIFETIME_INTERNAL;
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}
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static int
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add_entropy_callback(time_t now, const or_options_t *options)
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{
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(void)now;
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(void)options;
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/* We already seeded once, so don't die on failure. */
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crypto_seed_rng();
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/** How often do we add more entropy to OpenSSL's RNG pool? */
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#define ENTROPY_INTERVAL (60*60)
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time_to.add_entropy = now + ENTROPY_INTERVAL;
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}
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return ENTROPY_INTERVAL;
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}
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static int
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enable_accounting_callback(time_t now, const or_options_t *options)
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{
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/* 1c. If we have to change the accounting interval or record
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* bandwidth used in this accounting interval, do so. */
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if (accounting_is_enabled(options))
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if (accounting_is_enabled(options)) {
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accounting_run_housekeeping(now);
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return 1;
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}
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return -1;
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}
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if (time_to.launch_reachability_tests < now &&
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(authdir_mode_tests_reachability(options)) &&
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!net_is_disabled()) {
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time_to.launch_reachability_tests = now + REACHABILITY_TEST_INTERVAL;
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static int
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launch_reachability_tests_callback(time_t now, const or_options_t *options)
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{
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if (authdir_mode_tests_reachability(options) &&
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!net_is_disabled()) {
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/* try to determine reachability of the other Tor relays */
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dirserv_test_reachability(now);
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}
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return REACHABILITY_TEST_INTERVAL;
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}
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static int
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downrate_stability_callback(time_t now, const or_options_t *options)
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{
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(void)options;
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/* 1d. Periodically, we discount older stability information so that new
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* stability info counts more, and save the stability information to disk as
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* appropriate. */
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if (time_to.downrate_stability < now)
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time_to.downrate_stability = rep_hist_downrate_old_runs(now);
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time_t next = rep_hist_downrate_old_runs(now);
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return safe_timer_diff(now, next);
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}
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static int
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save_stability_callback(time_t now, const or_options_t *options)
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{
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if (authdir_mode_tests_reachability(options)) {
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if (time_to.save_stability < now) {
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if (time_to.save_stability && rep_hist_record_mtbf_data(now, 1)<0) {
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log_warn(LD_GENERAL, "Couldn't store mtbf data.");
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}
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#define SAVE_STABILITY_INTERVAL (30*60)
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time_to.save_stability = now + SAVE_STABILITY_INTERVAL;
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if (rep_hist_record_mtbf_data(now, 1)<0) {
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log_warn(LD_GENERAL, "Couldn't store mtbf data.");
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}
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}
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#define SAVE_STABILITY_INTERVAL (30*60)
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return SAVE_STABILITY_INTERVAL;
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}
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static int
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check_authority_cert_callback(time_t now, const or_options_t *options)
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{
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(void)now;
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(void)options;
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/* 1e. Periodically, if we're a v3 authority, we check whether our cert is
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* close to expiring and warn the admin if it is. */
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if (time_to.check_v3_certificate < now) {
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v3_authority_check_key_expiry();
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v3_authority_check_key_expiry();
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#define CHECK_V3_CERTIFICATE_INTERVAL (5*60)
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time_to.check_v3_certificate = now + CHECK_V3_CERTIFICATE_INTERVAL;
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}
|
||||
return CHECK_V3_CERTIFICATE_INTERVAL;
|
||||
}
|
||||
|
||||
static int
|
||||
check_expired_networkstatus_callback(time_t now, const or_options_t *options)
|
||||
{
|
||||
(void)options;
|
||||
/* 1f. Check whether our networkstatus has expired.
|
||||
*/
|
||||
if (time_to.check_for_expired_networkstatus < now) {
|
||||
networkstatus_t *ns = networkstatus_get_latest_consensus();
|
||||
/*XXXX RD: This value needs to be the same as REASONABLY_LIVE_TIME in
|
||||
* networkstatus_get_reasonably_live_consensus(), but that value is way
|
||||
* way too high. Arma: is the bridge issue there resolved yet? -NM */
|
||||
networkstatus_t *ns = networkstatus_get_latest_consensus();
|
||||
/*XXXX RD: This value needs to be the same as REASONABLY_LIVE_TIME in
|
||||
* networkstatus_get_reasonably_live_consensus(), but that value is way
|
||||
* way too high. Arma: is the bridge issue there resolved yet? -NM */
|
||||
#define NS_EXPIRY_SLOP (24*60*60)
|
||||
if (ns && ns->valid_until < now+NS_EXPIRY_SLOP &&
|
||||
router_have_minimum_dir_info()) {
|
||||
router_dir_info_changed();
|
||||
}
|
||||
#define CHECK_EXPIRED_NS_INTERVAL (2*60)
|
||||
time_to.check_for_expired_networkstatus = now + CHECK_EXPIRED_NS_INTERVAL;
|
||||
if (ns && ns->valid_until < now+NS_EXPIRY_SLOP &&
|
||||
router_have_minimum_dir_info()) {
|
||||
router_dir_info_changed();
|
||||
}
|
||||
#define CHECK_EXPIRED_NS_INTERVAL (2*60)
|
||||
return CHECK_EXPIRED_NS_INTERVAL;
|
||||
}
|
||||
|
||||
static int
|
||||
write_stats_file_callback(time_t now, const or_options_t *options)
|
||||
{
|
||||
/* 1g. Check whether we should write statistics to disk.
|
||||
*/
|
||||
if (time_to.write_stats_files < now) {
|
||||
#define CHECK_WRITE_STATS_INTERVAL (60*60)
|
||||
time_t next_time_to_write_stats_files = (time_to.write_stats_files > 0 ?
|
||||
time_to.write_stats_files : now) + CHECK_WRITE_STATS_INTERVAL;
|
||||
if (options->CellStatistics) {
|
||||
time_t next_write =
|
||||
rep_hist_buffer_stats_write(time_to.write_stats_files);
|
||||
if (next_write && next_write < next_time_to_write_stats_files)
|
||||
next_time_to_write_stats_files = next_write;
|
||||
}
|
||||
if (options->DirReqStatistics) {
|
||||
time_t next_write = geoip_dirreq_stats_write(time_to.write_stats_files);
|
||||
if (next_write && next_write < next_time_to_write_stats_files)
|
||||
next_time_to_write_stats_files = next_write;
|
||||
}
|
||||
if (options->EntryStatistics) {
|
||||
time_t next_write = geoip_entry_stats_write(time_to.write_stats_files);
|
||||
if (next_write && next_write < next_time_to_write_stats_files)
|
||||
next_time_to_write_stats_files = next_write;
|
||||
}
|
||||
if (options->HiddenServiceStatistics) {
|
||||
time_t next_write = rep_hist_hs_stats_write(time_to.write_stats_files);
|
||||
if (next_write && next_write < next_time_to_write_stats_files)
|
||||
next_time_to_write_stats_files = next_write;
|
||||
}
|
||||
if (options->ExitPortStatistics) {
|
||||
time_t next_write = rep_hist_exit_stats_write(time_to.write_stats_files);
|
||||
if (next_write && next_write < next_time_to_write_stats_files)
|
||||
next_time_to_write_stats_files = next_write;
|
||||
}
|
||||
if (options->ConnDirectionStatistics) {
|
||||
time_t next_write = rep_hist_conn_stats_write(time_to.write_stats_files);
|
||||
if (next_write && next_write < next_time_to_write_stats_files)
|
||||
next_time_to_write_stats_files = next_write;
|
||||
}
|
||||
if (options->BridgeAuthoritativeDir) {
|
||||
time_t next_write = rep_hist_desc_stats_write(time_to.write_stats_files);
|
||||
if (next_write && next_write < next_time_to_write_stats_files)
|
||||
next_time_to_write_stats_files = next_write;
|
||||
}
|
||||
time_to.write_stats_files = next_time_to_write_stats_files;
|
||||
time_t next_time_to_write_stats_files = now + CHECK_WRITE_STATS_INTERVAL;
|
||||
if (options->CellStatistics) {
|
||||
time_t next_write =
|
||||
rep_hist_buffer_stats_write(now);
|
||||
if (next_write && next_write < next_time_to_write_stats_files)
|
||||
next_time_to_write_stats_files = next_write;
|
||||
}
|
||||
if (options->DirReqStatistics) {
|
||||
time_t next_write = geoip_dirreq_stats_write(now);
|
||||
if (next_write && next_write < next_time_to_write_stats_files)
|
||||
next_time_to_write_stats_files = next_write;
|
||||
}
|
||||
if (options->EntryStatistics) {
|
||||
time_t next_write = geoip_entry_stats_write(now);
|
||||
if (next_write && next_write < next_time_to_write_stats_files)
|
||||
next_time_to_write_stats_files = next_write;
|
||||
}
|
||||
if (options->HiddenServiceStatistics) {
|
||||
time_t next_write = rep_hist_hs_stats_write(now);
|
||||
if (next_write && next_write < next_time_to_write_stats_files)
|
||||
next_time_to_write_stats_files = next_write;
|
||||
}
|
||||
if (options->ExitPortStatistics) {
|
||||
time_t next_write = rep_hist_exit_stats_write(now);
|
||||
if (next_write && next_write < next_time_to_write_stats_files)
|
||||
next_time_to_write_stats_files = next_write;
|
||||
}
|
||||
if (options->ConnDirectionStatistics) {
|
||||
time_t next_write = rep_hist_conn_stats_write(now);
|
||||
if (next_write && next_write < next_time_to_write_stats_files)
|
||||
next_time_to_write_stats_files = next_write;
|
||||
}
|
||||
if (options->BridgeAuthoritativeDir) {
|
||||
time_t next_write = rep_hist_desc_stats_write(now);
|
||||
if (next_write && next_write < next_time_to_write_stats_files)
|
||||
next_time_to_write_stats_files = next_write;
|
||||
}
|
||||
|
||||
return safe_timer_diff(now, next_time_to_write_stats_files);
|
||||
}
|
||||
|
||||
static int
|
||||
record_bridge_stats_callback(time_t now, const or_options_t *options)
|
||||
{
|
||||
static int should_init_bridge_stats = 1;
|
||||
|
||||
/* 1h. Check whether we should write bridge statistics to disk.
|
||||
*/
|
||||
if (should_record_bridge_info(options)) {
|
||||
if (time_to.write_bridge_stats < now) {
|
||||
if (should_init_bridge_stats) {
|
||||
/* (Re-)initialize bridge statistics. */
|
||||
if (should_init_bridge_stats) {
|
||||
/* (Re-)initialize bridge statistics. */
|
||||
geoip_bridge_stats_init(now);
|
||||
time_to.write_bridge_stats = now + WRITE_STATS_INTERVAL;
|
||||
should_init_bridge_stats = 0;
|
||||
} else {
|
||||
/* Possibly write bridge statistics to disk and ask when to write
|
||||
* them next time. */
|
||||
time_to.write_bridge_stats = geoip_bridge_stats_write(
|
||||
time_to.write_bridge_stats);
|
||||
}
|
||||
return WRITE_STATS_INTERVAL;
|
||||
} else {
|
||||
/* Possibly write bridge statistics to disk and ask when to write
|
||||
* them next time. */
|
||||
time_t next = geoip_bridge_stats_write(now);
|
||||
return safe_timer_diff(now, next);
|
||||
}
|
||||
} else if (!should_init_bridge_stats) {
|
||||
/* Bridge mode was turned off. Ensure that stats are re-initialized
|
||||
* next time bridge mode is turned on. */
|
||||
should_init_bridge_stats = 1;
|
||||
}
|
||||
return -1;
|
||||
}
|
||||
|
||||
static int
|
||||
clean_caches_callback(time_t now, const or_options_t *options)
|
||||
{
|
||||
/* Remove old information from rephist and the rend cache. */
|
||||
if (time_to.clean_caches < now) {
|
||||
rep_history_clean(now - options->RephistTrackTime);
|
||||
rend_cache_clean(now, REND_CACHE_TYPE_CLIENT);
|
||||
rend_cache_clean(now, REND_CACHE_TYPE_SERVICE);
|
||||
rend_cache_clean_v2_descs_as_dir(now, 0);
|
||||
microdesc_cache_rebuild(NULL, 0);
|
||||
rep_history_clean(now - options->RephistTrackTime);
|
||||
rend_cache_clean(now, REND_CACHE_TYPE_CLIENT);
|
||||
rend_cache_clean(now, REND_CACHE_TYPE_SERVICE);
|
||||
rend_cache_clean_v2_descs_as_dir(now, 0);
|
||||
microdesc_cache_rebuild(NULL, 0);
|
||||
#define CLEAN_CACHES_INTERVAL (30*60)
|
||||
time_to.clean_caches = now + CLEAN_CACHES_INTERVAL;
|
||||
}
|
||||
return CLEAN_CACHES_INTERVAL;
|
||||
}
|
||||
|
||||
static int
|
||||
rend_cache_failure_clean_callback(time_t now, const or_options_t *options)
|
||||
{
|
||||
(void)options;
|
||||
/* We don't keep entries that are more than five minutes old so we try to
|
||||
* clean it as soon as we can since we want to make sure the client waits
|
||||
* as little as possible for reachability reasons. */
|
||||
rend_cache_failure_clean(now);
|
||||
return 1;
|
||||
}
|
||||
|
||||
static int
|
||||
retry_dns_callback(time_t now, const or_options_t *options)
|
||||
{
|
||||
(void)now;
|
||||
#define RETRY_DNS_INTERVAL (10*60)
|
||||
/* If we're a server and initializing dns failed, retry periodically. */
|
||||
if (time_to.retry_dns_init < now) {
|
||||
time_to.retry_dns_init = now + RETRY_DNS_INTERVAL;
|
||||
if (is_server && has_dns_init_failed())
|
||||
dns_init();
|
||||
}
|
||||
if (server_mode(options) && has_dns_init_failed())
|
||||
dns_init();
|
||||
return RETRY_DNS_INTERVAL;
|
||||
}
|
||||
|
||||
/* 2. Periodically, we consider force-uploading our descriptor
|
||||
* (if we've passed our internal checks). */
|
||||
|
||||
static int
|
||||
check_descriptor_callback(time_t now, const or_options_t *options)
|
||||
{
|
||||
/** How often do we check whether part of our router info has changed in a
|
||||
* way that would require an upload? That includes checking whether our IP
|
||||
* address has changed. */
|
||||
@ -1595,60 +1755,91 @@ run_scheduled_events(time_t now)
|
||||
|
||||
/* 2b. Once per minute, regenerate and upload the descriptor if the old
|
||||
* one is inaccurate. */
|
||||
if (time_to.check_descriptor < now && !options->DisableNetwork) {
|
||||
static int dirport_reachability_count = 0;
|
||||
time_to.check_descriptor = now + CHECK_DESCRIPTOR_INTERVAL;
|
||||
if (!options->DisableNetwork) {
|
||||
check_descriptor_bandwidth_changed(now);
|
||||
check_descriptor_ipaddress_changed(now);
|
||||
mark_my_descriptor_dirty_if_too_old(now);
|
||||
consider_publishable_server(0);
|
||||
/* also, check religiously for reachability, if it's within the first
|
||||
* 20 minutes of our uptime. */
|
||||
if (is_server &&
|
||||
(have_completed_a_circuit() || !any_predicted_circuits(now)) &&
|
||||
!we_are_hibernating()) {
|
||||
if (stats_n_seconds_working < TIMEOUT_UNTIL_UNREACHABILITY_COMPLAINT) {
|
||||
consider_testing_reachability(1, dirport_reachability_count==0);
|
||||
if (++dirport_reachability_count > 5)
|
||||
dirport_reachability_count = 0;
|
||||
} else if (time_to.recheck_bandwidth < now) {
|
||||
/* If we haven't checked for 12 hours and our bandwidth estimate is
|
||||
* low, do another bandwidth test. This is especially important for
|
||||
* bridges, since they might go long periods without much use. */
|
||||
const routerinfo_t *me = router_get_my_routerinfo();
|
||||
if (time_to.recheck_bandwidth && me &&
|
||||
me->bandwidthcapacity < me->bandwidthrate &&
|
||||
me->bandwidthcapacity < 51200) {
|
||||
reset_bandwidth_test();
|
||||
}
|
||||
#define BANDWIDTH_RECHECK_INTERVAL (12*60*60)
|
||||
time_to.recheck_bandwidth = now + BANDWIDTH_RECHECK_INTERVAL;
|
||||
}
|
||||
}
|
||||
|
||||
/* If any networkstatus documents are no longer recent, we need to
|
||||
* update all the descriptors' running status. */
|
||||
/* Remove dead routers. */
|
||||
/* XXXX This doesn't belong here, but it was here in the pre-
|
||||
* XXXX refactoring code. */
|
||||
routerlist_remove_old_routers();
|
||||
}
|
||||
|
||||
return CHECK_DESCRIPTOR_INTERVAL;
|
||||
}
|
||||
|
||||
static int
|
||||
check_for_reachability_bw_callback(time_t now, const or_options_t *options)
|
||||
{
|
||||
/* XXXX This whole thing was stuck in the middle of what is now
|
||||
* XXXX check_descriptor_callback. I'm not sure it's right. */
|
||||
|
||||
static int dirport_reachability_count = 0;
|
||||
/* also, check religiously for reachability, if it's within the first
|
||||
* 20 minutes of our uptime. */
|
||||
if (server_mode(options) &&
|
||||
(have_completed_a_circuit() || !any_predicted_circuits(now)) &&
|
||||
!we_are_hibernating()) {
|
||||
if (stats_n_seconds_working < TIMEOUT_UNTIL_UNREACHABILITY_COMPLAINT) {
|
||||
consider_testing_reachability(1, dirport_reachability_count==0);
|
||||
if (++dirport_reachability_count > 5)
|
||||
dirport_reachability_count = 0;
|
||||
return 1;
|
||||
} else {
|
||||
/* If we haven't checked for 12 hours and our bandwidth estimate is
|
||||
* low, do another bandwidth test. This is especially important for
|
||||
* bridges, since they might go long periods without much use. */
|
||||
const routerinfo_t *me = router_get_my_routerinfo();
|
||||
static int first_time = 1;
|
||||
if (!first_time && me &&
|
||||
me->bandwidthcapacity < me->bandwidthrate &&
|
||||
me->bandwidthcapacity < 51200) {
|
||||
reset_bandwidth_test();
|
||||
}
|
||||
first_time = 0;
|
||||
#define BANDWIDTH_RECHECK_INTERVAL (12*60*60)
|
||||
return BANDWIDTH_RECHECK_INTERVAL;
|
||||
}
|
||||
}
|
||||
return CHECK_DESCRIPTOR_INTERVAL;
|
||||
}
|
||||
|
||||
static int
|
||||
fetch_networkstatus_callback(time_t now, const or_options_t *options)
|
||||
{
|
||||
/* 2c. Every minute (or every second if TestingTorNetwork), check
|
||||
* whether we want to download any networkstatus documents. */
|
||||
|
||||
/* How often do we check whether we should download network status
|
||||
* documents? */
|
||||
/* How often do we check whether we should download network status
|
||||
* documents? */
|
||||
#define networkstatus_dl_check_interval(o) ((o)->TestingTorNetwork ? 1 : 60)
|
||||
|
||||
if (!should_delay_dir_fetches(options, NULL) &&
|
||||
time_to.download_networkstatus < now) {
|
||||
time_to.download_networkstatus =
|
||||
now + networkstatus_dl_check_interval(options);
|
||||
update_networkstatus_downloads(now);
|
||||
}
|
||||
if (should_delay_dir_fetches(options, NULL))
|
||||
return -1;
|
||||
|
||||
update_networkstatus_downloads(now);
|
||||
return networkstatus_dl_check_interval(options);
|
||||
}
|
||||
|
||||
static int
|
||||
dirvote_act_callback(time_t now, const or_options_t *options)
|
||||
{
|
||||
/* 2c. Let directory voting happen. */
|
||||
if (authdir_mode_v3(options))
|
||||
if (authdir_mode_v3(options)) {
|
||||
dirvote_act(options, now);
|
||||
return 1;
|
||||
}
|
||||
return -1;
|
||||
}
|
||||
|
||||
static int
|
||||
expire_misc_callback(time_t now, const or_options_t *options)
|
||||
{
|
||||
(void)now;
|
||||
(void)options;
|
||||
|
||||
/* 3a. Every second, we examine pending circuits and prune the
|
||||
* ones which have been pending for more than a few seconds.
|
||||
@ -1670,28 +1861,54 @@ run_scheduled_events(time_t now)
|
||||
*/
|
||||
connection_expire_held_open();
|
||||
|
||||
/* 3d. And every 60 seconds, we relaunch listeners if any died. */
|
||||
if (!net_is_disabled() && time_to.check_listeners < now) {
|
||||
retry_all_listeners(NULL, NULL, 0);
|
||||
time_to.check_listeners = now+60;
|
||||
}
|
||||
return 1;
|
||||
}
|
||||
|
||||
static int
|
||||
retry_listeners_callback(time_t now, const or_options_t *options)
|
||||
{
|
||||
(void)now;
|
||||
(void)options;
|
||||
/* 3d. And every 60 seconds, we relaunch listeners if any died. */
|
||||
if (!net_is_disabled()) {
|
||||
retry_all_listeners(NULL, NULL, 0);
|
||||
return 60;
|
||||
}
|
||||
return -1;
|
||||
}
|
||||
|
||||
static int
|
||||
build_circuits_callback(time_t now, const or_options_t *options)
|
||||
{
|
||||
(void)options;
|
||||
/* 4. Every second, we try a new circuit if there are no valid
|
||||
* circuits. Every NewCircuitPeriod seconds, we expire circuits
|
||||
* that became dirty more than MaxCircuitDirtiness seconds ago,
|
||||
* and we make a new circ if there are no clean circuits.
|
||||
*/
|
||||
have_dir_info = router_have_minimum_dir_info();
|
||||
const int have_dir_info = router_have_minimum_dir_info();
|
||||
if (have_dir_info && !net_is_disabled()) {
|
||||
circuit_build_needed_circs(now);
|
||||
} else {
|
||||
circuit_expire_old_circs_as_needed(now);
|
||||
}
|
||||
return 1;
|
||||
}
|
||||
|
||||
/* every 10 seconds, but not at the same second as other such events */
|
||||
if (now % 10 == 5)
|
||||
circuit_expire_old_circuits_serverside(now);
|
||||
static int
|
||||
expire_old_ciruits_serverside_callback(time_t now, const or_options_t *options)
|
||||
{
|
||||
(void)options;
|
||||
/* every 11 seconds, so not usually the same second as other such events */
|
||||
circuit_expire_old_circuits_serverside(now);
|
||||
return 11;
|
||||
}
|
||||
|
||||
static int
|
||||
housekeeping_callback(time_t now, const or_options_t *options)
|
||||
{
|
||||
(void)options;
|
||||
int i;
|
||||
/* 5. We do housekeeping for each connection... */
|
||||
connection_or_set_bad_connections(NULL, 0);
|
||||
for (i=0;i<smartlist_len(connection_array);i++) {
|
||||
@ -1721,59 +1938,88 @@ run_scheduled_events(time_t now)
|
||||
channel_run_cleanup();
|
||||
channel_listener_run_cleanup();
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
static int
|
||||
check_dns_honesty_callback(time_t now, const or_options_t *options)
|
||||
{
|
||||
(void)now;
|
||||
/* 9. and if we're an exit node, check whether our DNS is telling stories
|
||||
* to us. */
|
||||
if (!net_is_disabled() &&
|
||||
public_server_mode(options) &&
|
||||
time_to.check_for_correct_dns < now &&
|
||||
! router_my_exit_policy_is_reject_star()) {
|
||||
if (!time_to.check_for_correct_dns) {
|
||||
time_to.check_for_correct_dns =
|
||||
crypto_rand_time_range(now + 60, now + 180);
|
||||
} else {
|
||||
dns_launch_correctness_checks();
|
||||
time_to.check_for_correct_dns = now + 12*3600 +
|
||||
crypto_rand_int(12*3600);
|
||||
}
|
||||
if (net_is_disabled() ||
|
||||
! public_server_mode(options) ||
|
||||
router_my_exit_policy_is_reject_star())
|
||||
return -1;
|
||||
|
||||
static int first_time = 1;
|
||||
if (first_time) {
|
||||
/* Don't launch right when we start */
|
||||
first_time = 0;
|
||||
return crypto_rand_int_range(60, 180);
|
||||
}
|
||||
|
||||
dns_launch_correctness_checks();
|
||||
return 12*3600 + crypto_rand_int(12*3600);
|
||||
}
|
||||
|
||||
static int
|
||||
write_bridge_ns_callback(time_t now, const or_options_t *options)
|
||||
{
|
||||
/* 10. write bridge networkstatus file to disk */
|
||||
if (options->BridgeAuthoritativeDir &&
|
||||
time_to.write_bridge_status_file < now) {
|
||||
if (options->BridgeAuthoritativeDir) {
|
||||
networkstatus_dump_bridge_status_to_file(now);
|
||||
#define BRIDGE_STATUSFILE_INTERVAL (30*60)
|
||||
time_to.write_bridge_status_file = now+BRIDGE_STATUSFILE_INTERVAL;
|
||||
return BRIDGE_STATUSFILE_INTERVAL;
|
||||
}
|
||||
return -1;
|
||||
}
|
||||
|
||||
static int
|
||||
check_fw_helper_app_callback(time_t now, const or_options_t *options)
|
||||
{
|
||||
if (net_is_disabled() ||
|
||||
! server_mode(options) ||
|
||||
! options->PortForwarding) {
|
||||
return -1;
|
||||
}
|
||||
/* 11. check the port forwarding app */
|
||||
if (!net_is_disabled() &&
|
||||
time_to.check_port_forwarding < now &&
|
||||
options->PortForwarding &&
|
||||
is_server) {
|
||||
|
||||
#define PORT_FORWARDING_CHECK_INTERVAL 5
|
||||
smartlist_t *ports_to_forward = get_list_of_ports_to_forward();
|
||||
if (ports_to_forward) {
|
||||
tor_check_port_forwarding(options->PortForwardingHelper,
|
||||
ports_to_forward,
|
||||
now);
|
||||
smartlist_t *ports_to_forward = get_list_of_ports_to_forward();
|
||||
if (ports_to_forward) {
|
||||
tor_check_port_forwarding(options->PortForwardingHelper,
|
||||
ports_to_forward,
|
||||
now);
|
||||
|
||||
SMARTLIST_FOREACH(ports_to_forward, char *, cp, tor_free(cp));
|
||||
smartlist_free(ports_to_forward);
|
||||
}
|
||||
time_to.check_port_forwarding = now+PORT_FORWARDING_CHECK_INTERVAL;
|
||||
SMARTLIST_FOREACH(ports_to_forward, char *, cp, tor_free(cp));
|
||||
smartlist_free(ports_to_forward);
|
||||
}
|
||||
return PORT_FORWARDING_CHECK_INTERVAL;
|
||||
}
|
||||
|
||||
static int
|
||||
pt_configuration_callback(time_t now, const or_options_t *options)
|
||||
{
|
||||
(void)now;
|
||||
(void)options;
|
||||
/* 11b. check pending unconfigured managed proxies */
|
||||
if (!net_is_disabled() && pt_proxies_configuration_pending())
|
||||
pt_configure_remaining_proxies();
|
||||
return 1;
|
||||
}
|
||||
|
||||
static int
|
||||
heartbeat_callback(time_t now, const or_options_t *options)
|
||||
{
|
||||
static int first = 1;
|
||||
/* 12. write the heartbeat message */
|
||||
if (options->HeartbeatPeriod &&
|
||||
time_to.next_heartbeat <= now) {
|
||||
if (time_to.next_heartbeat) /* don't log the first heartbeat */
|
||||
log_heartbeat(now);
|
||||
time_to.next_heartbeat = now+options->HeartbeatPeriod;
|
||||
if (first) {
|
||||
first = 0;
|
||||
} else {
|
||||
log_heartbeat(now);
|
||||
}
|
||||
return options->HeartbeatPeriod;
|
||||
}
|
||||
|
||||
/** Timer: used to invoke second_elapsed_callback() once per second. */
|
||||
@ -1995,7 +2241,8 @@ dns_servers_relaunch_checks(void)
|
||||
{
|
||||
if (server_mode(get_options())) {
|
||||
dns_reset_correctness_checks();
|
||||
time_to.check_for_correct_dns = 0;
|
||||
tor_assert(check_dns_honesty_event);
|
||||
periodic_event_reschedule(check_dns_honesty_event);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user