From: Vsevolod Stakhov <vsevolod@highsecure.ru>
Date: Sat, 20 Mar 2021 19:47:22 +0000 (+0000)
Subject: [Minor] Jitter min age for hashes
X-Git-Tag: 3.0~565
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=68f4c290ed18e91c3c0eb1afae41bf6a0303396f;p=thirdparty%2Frspamd.git

[Minor] Jitter min age for hashes
---

diff --git a/src/fuzzy_storage.c b/src/fuzzy_storage.c
index 316e19d0eb..d710de1723 100644
--- a/src/fuzzy_storage.c
+++ b/src/fuzzy_storage.c
@@ -906,10 +906,15 @@ rspamd_fuzzy_check_callback (struct rspamd_fuzzy_reply *result, void *ud)
 	}
 
 	if (!isnan (session->ctx->delay) &&
-			rspamd_get_calendar_ticks () - result->ts < session->ctx->delay &&
 			rspamd_match_radix_map_addr (session->ctx->delay_whitelist,
 					session->addr) == NULL)  {
-		send_flags |= RSPAMD_FUZZY_REPLY_DELAY;
+		gdouble hash_age = rspamd_get_calendar_ticks () - result->ts;
+		gdouble jittered_age = rspamd_time_jitter (session->ctx->delay,
+				session->ctx->delay / 2.0);
+
+		if (hash_age < jittered_age) {
+			send_flags |= RSPAMD_FUZZY_REPLY_DELAY;
+		}
 	}
 
 	/* Refresh hash if found with strong confidence */