added regression test for direct dnskey signature

regression-tests.auth-py/test_DirectDNSKEYSignature.py

@@ -0,0 +1,74 @@
+#!/usr/bin/env python
+
+import dns
+import os
+import socket
+from authtests import AuthTest
+
+class TestDirectDNSKEYSignature(AuthTest):
+    _config_template = """
+    launch=bind
+    direct-dnskey=yes
+    direct-dnskey-signature=yes
+    """
+
+    _zones = {
+        'example.org': """
+example.org.                 3600 IN SOA     {soa}
+example.org.                 3600 IN NS      ns1.example.org.
+example.org.                 3600 IN NS      ns2.example.org.
+ns1.example.org.             3600 IN A       192.0.2.1
+ns2.example.org.             3600 IN A       192.0.2.2
+example.org.                 3600 IN DNSKEY  257 3 13 kRMX25/TJovOrsWq9Hv6QEFpzYsxItaOWPduFEwPz+5FM97SEHyCx+fc /XUN9gtktpXx45LAZpg/sFFEQH89og==
+example.org.                 3600 IN DNSKEY  256 3 13 Fy1p5/TTniw9Ukwca3Fnjo4tQk9ZK5zSwX9HZhHC2Tta/+3OZ9+y/Noz G51m/vs/I3oo9OqF+znxOi69yuGZaQ==
+example.org.                 3600 IN RRSIG   DNSKEY 13 2 3600 20250118211239 20241228221941 22273 example.org. 8HNifVnXhm5u+YDL8wWuJou5BWPzRYainXaP45qn2/yoPqBXSwhGFA2a kmh2Lqpj2D7qcs3KJ/QAR1QZ9CUAjw==
+        """
+    }
+
+    @classmethod
+    def setUpClass(cls):
+        cls.setUpSockets()
+        cls.startResponders()
+        confdir = os.path.join('configs', cls._confdir)
+        cls.createConfigDir(confdir)
+        cls.generateAllAuthConfig(confdir)
+        cls.startAuth(confdir, "0.0.0.0")
+        print("Launching tests...")
+
+    @classmethod
+    def setUpSockets(cls):
+        print("Setting up UDP socket...")
+        cls._sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+        cls._sock.settimeout(2.0)
+        cls._sock.connect((cls._PREFIX + ".2", cls._authPort))
+
+    def testDNSKEYQuery(self):
+        """Test to verify DNSKEY and RRSIG records are served correctly"""
+        query = dns.message.make_query('example.org', 'DNSKEY', use_edns=True, want_dnssec=True)
+        res = self.sendUDPQuery(query)
+
+        # Ensure no error in response
+        self.assertRcodeEqual(res, dns.rcode.NOERROR)
+
+        # Validate DNSKEY record
+        dnskey_found = any(rrset.rdtype == dns.rdatatype.DNSKEY for rrset in res.answer)
+        self.assertTrue(dnskey_found, "DNSKEY record not found in the answer section")
+
+        # Validate RRSIG record for DNSKEY
+        rrsig_found = any(rrset.rdtype == dns.rdatatype.RRSIG and rrset.covers == dns.rdatatype.DNSKEY for rrset in res.answer)
+        self.assertTrue(rrsig_found, "RRSIG for DNSKEY not found in the answer section")
+
+    def testDNSKEYQueryWithoutDNSSEC(self):
+        """Test to ensure no RRSIG records are returned without the DNSSEC flag"""
+        query = dns.message.make_query('example.org', 'DNSKEY', use_edns=True, want_dnssec=False)
+        res = self.sendUDPQuery(query)
+
+        # Ensure no error in response
+        self.assertRcodeEqual(res, dns.rcode.NOERROR)
+
+        # Ensure DNSKEY is present but no RRSIG
+        dnskey_found = any(rrset.rdtype == dns.rdatatype.DNSKEY for rrset in res.answer)
+        self.assertTrue(dnskey_found, "DNSKEY record not found in the answer section")
+
+        rrsig_found = any(rrset.rdtype == dns.rdatatype.RRSIG for rrset in res.answer)
+        self.assertFalse(rrsig_found, "RRSIG records found unexpectedly without DNSSEC flag")