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Extend get_voting_interval() so that it's callable by relays.

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In the past, only authorities and clients had to use that function because of
the SRV subsystem. However, because of its use in rep_hist_hs_stats_init() it
will now also be used by relays when bootstrapping without a consensus. Make it
do something sensible.

Another approach (instead of using magic values) would be to wait
initialization of HSv3 stats until we get a consensus but that seems messy to
schedule.

Another approach would be to make dirauth_sched_get_configured_interval() also
work for relays (particularly when TestingNetwork is enabled), but that also
seems a good amount of work.
This commit is contained in:
George Kadianakis 2020-11-02 12:42:08 +02:00
parent f2eff17126
commit d0be2ae7f9
1 changed files with 11 additions and 10 deletions
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21
src/feature/hs_common/shared_random_client.c
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@ -33,12 +33,11 @@ srv_to_control_string(const sr_srv_t *srv)
}
/**
* If we have no consensus and we are not an authority, assume that this is
* the voting interval. We should never actually use this: only authorities
* should be trying to figure out the schedule when they don't have a
* consensus.
**/
* If we have no consensus and we are not an authority, assume that this is the
* voting interval. This can be used while bootstrapping as a relay and we are
* asked to initialize HS stats (see rep_hist_hs_stats_init()) */
#define DEFAULT_NETWORK_VOTING_INTERVAL (3600)
#define TESTING_DEFAULT_NETWORK_VOTING_INTERVAL (20)
/* This is an unpleasing workaround for tests. Our unit tests assume that we
* are scheduling all of our shared random stuff as if we were a directory
@ -69,11 +68,13 @@ get_voting_interval(void)
* It's better than falling back to the non-consensus case. */
interval = (int)(consensus->fresh_until - consensus->valid_after);
} else {
/* We should never be reaching this point, since a client should never
* call this code unless they have some kind of a consensus. All we can
* do is hope that this network is using the default voting interval. */
tor_assert_nonfatal_unreached_once();
interval = DEFAULT_NETWORK_VOTING_INTERVAL;
/* We can reach this as a relay when bootstrapping and we are asked to
* initialize HS stats (see rep_hist_hs_stats_init()). */
if (get_options()->TestingTorNetwork) {
interval = TESTING_DEFAULT_NETWORK_VOTING_INTERVAL;
} else {
interval = DEFAULT_NETWORK_VOTING_INTERVAL;
}
}
tor_assert(interval > 0);
return interval;