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Diffstat (limited to 'python/samba/tests/dns.py')
-rw-r--r-- | python/samba/tests/dns.py | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/python/samba/tests/dns.py b/python/samba/tests/dns.py index 1b5b64da3a4..3390a3990c9 100644 --- a/python/samba/tests/dns.py +++ b/python/samba/tests/dns.py @@ -798,6 +798,30 @@ class TestComplexQueries(DNSTest): self.assertEquals(response.answers[1].name, name2) self.assertEquals(response.answers[1].rdata, name0) + def test_cname_loop(self): + cname1 = "cnamelooptestrec." + self.get_dns_domain() + cname2 = "cnamelooptestrec2." + self.get_dns_domain() + cname3 = "cnamelooptestrec3." + self.get_dns_domain() + self.make_dns_update(cname1, cname2, dnsp.DNS_TYPE_CNAME) + self.make_dns_update(cname2, cname3, dnsp.DNS_TYPE_CNAME) + self.make_dns_update(cname3, cname1, dnsp.DNS_TYPE_CNAME) + + p = self.make_name_packet(dns.DNS_OPCODE_QUERY) + questions = [] + + q = self.make_name_question(cname1, + dns.DNS_QTYPE_A, + dns.DNS_QCLASS_IN) + questions.append(q) + self.finish_name_packet(p, questions) + + (response, response_packet) =\ + self.dns_transaction_udp(p, host=self.server_ip) + + max_recursion_depth = 20 + self.assertEquals(len(response.answers), max_recursion_depth) + + class TestInvalidQueries(DNSTest): def setUp(self): super(TestInvalidQueries, self).setUp() |