From: Vsevolod Stakhov <vsevolod@rambler-co.ru>
Date: Tue, 28 Apr 2009 10:13:32 +0000 (+0400)
Subject: * Avoid division by zero while comparing fuzzy hashes
X-Git-Tag: 0.2.7~165
X-Git-Url: https://source.dussan.org/?a=commitdiff_plain;h=99caa0aca331669149c7b77b4a5d851a3e0a2b49;p=rspamd.git

* Avoid division by zero while comparing fuzzy hashes
---

diff --git a/src/fuzzy.c b/src/fuzzy.c
index a53ed929d..49bb9da27 100644
--- a/src/fuzzy.c
+++ b/src/fuzzy.c
@@ -273,6 +273,11 @@ fuzzy_compare_hashes (fuzzy_hash_t *h1, fuzzy_hash_t *h2)
 	
 	l1 = strlen (h1->hash_pipe);
 	l2 = strlen (h2->hash_pipe);
+
+	if (l1 == 0 || l2 == 0) {
+		return 0;
+	}
+
 	res = lev_distance (h1->hash_pipe, l1, h2->hash_pipe, l2);
 	res = (res * 100) / (l1 + l2);