[tor-commits] [tor/master] Reinstate support for GUARD NEW/UP/DOWN control port events.

[dgoulet@xxxxxxxxxxxxxx]

commit 68d848e244cf274d1a1df4da2f9adca2aaffec19
Author: George Kadianakis <desnacked@xxxxxxxxxx>
Date:   Wed Jun 17 13:48:33 2020 +0300

    Reinstate support for GUARD NEW/UP/DOWN control port events.
---
 changes/bug40001                |  3 +++
 src/feature/client/entrynodes.c | 13 +++++++++++++
 2 files changed, 16 insertions(+)

diff --git a/changes/bug40001 b/changes/bug40001
new file mode 100644
index 000000000..0e3f45461
--- /dev/null
+++ b/changes/bug40001
@@ -0,0 +1,3 @@
+  o Minor features (entry guards):
+    - Reinstate support for GUARD NEW/UP/DOWN control port events.
+      Closes ticket 40001.
\ No newline at end of file
diff --git a/src/feature/client/entrynodes.c b/src/feature/client/entrynodes.c
index 2a000a47b..223815e7b 100644
--- a/src/feature/client/entrynodes.c
+++ b/src/feature/client/entrynodes.c
@@ -906,6 +906,11 @@ entry_guard_add_to_sample_impl(guard_selection_t *gs,
   guard->in_selection = gs;
   entry_guard_set_filtered_flags(get_options(), gs, guard);
   entry_guards_changed_for_guard_selection(gs);
+
+  /* Just added this guard to the sampled set and hence it might be used as a
+   * guard in the future: send GUARD NEW control event. */
+  control_event_guard(guard->nickname, guard->identity, "NEW");
+
   return guard;
 }
 
@@ -2259,6 +2264,9 @@ entry_guards_note_guard_failure(guard_selection_t *gs,
   if (guard->failing_since == 0)
     guard->failing_since = approx_time();
 
+  /* This guard not reachable: send GUARD DOWN event */
+  control_event_guard(guard->nickname, guard->identity, "DOWN");
+
   log_info(LD_GUARD, "Recorded failure for %s%sguard %s",
            guard->is_primary?"primary ":"",
            guard->confirmed_idx>=0?"confirmed ":"",
@@ -2284,6 +2292,11 @@ entry_guards_note_guard_success(guard_selection_t *gs,
   const time_t last_time_on_internet = gs->last_time_on_internet;
   gs->last_time_on_internet = approx_time();
 
+  /* If guard was not already marked as reachable, send a GUARD UP signal */
+  if (guard->is_reachable != GUARD_REACHABLE_YES) {
+    control_event_guard(guard->nickname, guard->identity, "UP");
+  }
+
   guard->is_reachable = GUARD_REACHABLE_YES;
   guard->failing_since = 0;
   guard->is_pending = 0;



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