Stop using all dirauth-only options in shared_random_client.c

This is not as clean a patch as I would like: see the comment on
ASSUME_AUTHORITY_SCHEDULING. This issue here is that the unit tests
sometimes assume that we are going to be looking at the dirauth
options and behaving like a dirauth, but without setting the options
to turn is into one.

This isn't an issue for actually running Tor, as far as I can tell
with chutney.

2 files changed, 30 insertions, 30 deletions

diff --git a/src/feature/hs_common/shared_random_client.c b/src/feature/hs_common/shared_random_client.c
index b30d68fb43..6b291c9344 100644
--- a/src/feature/hs_common/shared_random_client.c
+++ b/src/feature/hs_common/shared_random_client.c
@@ -11,6 +11,7 @@
 #include "feature/hs_common/shared_random_client.h"
 
 #include "app/config/config.h"
+#include "feature/dirauth/authmode.h"
 #include "feature/dirauth/voting_schedule.h"
 #include "feature/nodelist/networkstatus.h"
 #include "lib/encoding/binascii.h"
@@ -31,6 +32,24 @@ srv_to_control_string(const sr_srv_t *srv)
   return srv_str;
 }
 
+/**
+ * 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.
+ **/
+#define DEFAULT_NETWORK_VOTING_INTERVAL (3600)
+
+/* 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
+ * authority, but they do not always set V3AuthoritativeDir.
+ */
+#ifdef TOR_UNIT_TESTS
+#define ASSUME_AUTHORITY_SCHEDULING 1
+#else
+#define ASSUME_AUTHORITY_SCHEDULING 0
+#endif
+
 /** Return the voting interval of the tor vote subsystem. */
 int
 get_voting_interval(void)
@@ -40,39 +59,16 @@ get_voting_interval(void)
 
   if (consensus) {
     interval = (int)(consensus->fresh_until - consensus->valid_after);
+  } else if (authdir_mode(get_options()) || ASSUME_AUTHORITY_SCHEDULING) {
+    interval = dirauth_sched_get_configured_interval();
   } else {
-    /* Same for both a testing and real network. We voluntarily ignore the
-     * InitialVotingInterval since it complexifies things and it doesn't
-     * affect the SR protocol. */
-    interval = get_options()->V3AuthVotingInterval;
+    tor_assert_nonfatal_unreached_once();
+    interval = DEFAULT_NETWORK_VOTING_INTERVAL;
   }
   tor_assert(interval > 0);
   return interval;
 }
 
-/** Given the current consensus, return the start time of the current round of
- * the SR protocol. For example, if it's 23:47:08, the current round thus
- * started at 23:47:00 for a voting interval of 10 seconds.
- *
- * This function uses the consensus voting schedule to derive its results,
- * instead of the actual consensus we are currently using, so it should be used
- * for voting purposes. */
-time_t
-get_start_time_of_current_round(void)
-{
-  const or_options_t *options = get_options();
-  int voting_interval = get_voting_interval();
-  /* First, get the start time of the next round */
-  time_t next_start = dirauth_sched_get_next_valid_after_time();
-  /* Now roll back next_start by a voting interval to find the start time of
-     the current round. */
-  time_t curr_start = voting_sched_get_start_of_interval_after(
-                                     next_start - voting_interval - 1,
-                                     voting_interval,
-                                     options->TestingV3AuthVotingStartOffset);
-  return curr_start;
-}
-
 /*
  * Public API
  */
@@ -242,8 +238,14 @@ sr_state_get_start_time_of_current_protocol_run(void)
   networkstatus_t *ns = networkstatus_get_live_consensus(approx_time());
   if (ns) {
     beginning_of_curr_round = ns->valid_after;
+  } else if (authdir_mode(get_options()) || ASSUME_AUTHORITY_SCHEDULING) {
+    beginning_of_curr_round = dirauth_sched_get_cur_valid_after_time();
   } else {
-    beginning_of_curr_round = get_start_time_of_current_round();
+    tor_assert_nonfatal_unreached_once();
+    beginning_of_curr_round = voting_sched_get_start_of_interval_after(
+                                             approx_time() - voting_interval,
+                                             voting_interval,
+                                             0);
   }
 
   /* Get current SR protocol round */
diff --git a/src/feature/hs_common/shared_random_client.h b/src/feature/hs_common/shared_random_client.h
index 3031a2bb9a..37a086d590 100644
--- a/src/feature/hs_common/shared_random_client.h
+++ b/src/feature/hs_common/shared_random_client.h
@@ -38,11 +38,9 @@ time_t sr_state_get_start_time_of_current_protocol_run(void);
 time_t sr_state_get_start_time_of_previous_protocol_run(void);
 unsigned int sr_state_get_phase_duration(void);
 unsigned int sr_state_get_protocol_run_duration(void);
-time_t get_start_time_of_current_round(void);
 
 #ifdef TOR_UNIT_TESTS
 
 #endif /* TOR_UNIT_TESTS */
 
 #endif /* !defined(TOR_SHARED_RANDOM_CLIENT_H) */
-