From: Michael Tremer <michael.tremer@ipfire.org>
Date: Thu, 11 Dec 2025 19:21:39 +0000 (+0000)
Subject: util: Don't accept any IP addresses being listed
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=594a9ac5f7d6982c6bb895245a53f57abe81b15a;p=dnsbl.git

util: Don't accept any IP addresses being listed

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

diff --git a/src/dnsbl/util.py b/src/dnsbl/util.py
index 126984c..bed15d1 100644
--- a/src/dnsbl/util.py
+++ b/src/dnsbl/util.py
@@ -19,6 +19,7 @@
 ###############################################################################
 
 import idna
+import ipaddress
 import logging
 import re
 import time
@@ -105,4 +106,12 @@ def is_fqdn(s):
 			if not ch.isalnum() or ch in "-_":
 				return False
 
+	# The string cannot be an IP address
+	try:
+		ipaddress.ip_address(s)
+	except ValueError:
+		pass
+	else:
+		return False
+
 	return True