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-rw-r--r--src/or/hs_common.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/src/or/hs_common.c b/src/or/hs_common.c
index 75339df6cd..3bf423f855 100644
--- a/src/or/hs_common.c
+++ b/src/or/hs_common.c
@@ -276,6 +276,14 @@ hs_get_next_time_period_num(time_t now)
return hs_get_time_period_num(now) + 1;
}
+/* Get the number of the _previous_ HS time period, given that the current
+ * time is <b>now</b>. */
+uint64_t
+hs_get_previous_time_period_num(time_t now)
+{
+ return hs_get_time_period_num(now) - 1;
+}
+
/* Return the start time of the upcoming time period based on <b>now</b>. */
time_t
hs_get_start_time_of_next_time_period(time_t now)