From: Michael Tremer <michael.tremer@ipfire.org>
Date: Mon, 22 Dec 2025 12:44:01 +0000 (+0000)
Subject: dnsbl: analyze: Don't divide by zero when a source is empty
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b9dfb7bfe6c97db63d0ddfe2cc02d4e1da15565d;p=dbl.git

dnsbl: analyze: Don't divide by zero when a source is empty

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>
---

diff --git a/src/scripts/dnsbl.in b/src/scripts/dnsbl.in
index bcd4596..05ff800 100644
--- a/src/scripts/dnsbl.in
+++ b/src/scripts/dnsbl.in
@@ -454,8 +454,16 @@ class CLI(object):
 					columns.append("")
 					continue
 
+				# Determine the length of the source
+				length = len(source)
+
+				# Skip if the source is empty
+				if not length:
+					columns.append("")
+					continue
+
 				columns.append(
-					"%.2f%%" % (value / len(source) * 100),
+					"%.2f%%" % (value / length * 100),
 				)
 
 			# Add a row to the table