From 2ded3a307ad04799f1694c31a2d8a85c92ad28b1 Mon Sep 17 00:00:00 2001 From: Kai Blin Date: Mon, 10 Dec 2012 05:50:05 +1000 Subject: [PATCH] dns: Add support for MX queries Due to an oversight, the internal DNS server supports MX record updates, but not MX record queries. Add support for MX queries and tests. This should fix bug #9485 Signed-off-by: Kai Blin Reviewed-By: Amitay Isaacs --- python/samba/tests/dns.py | 43 ++++++++++++++++++++++++++++++++++++++++++ source4/dns_server/dns_query.c | 8 ++++++++ 2 files changed, 51 insertions(+) diff --git a/python/samba/tests/dns.py b/python/samba/tests/dns.py index 49d699e..a29025d 100644 --- a/python/samba/tests/dns.py +++ b/python/samba/tests/dns.py @@ -510,6 +510,49 @@ class TestDNSUpdates(DNSTest): response = self.dns_transaction_udp(p) self.assert_dns_rcode_equals(response, dns.DNS_RCODE_NXDOMAIN) + def test_update_add_mx_record(self): + "test adding MX records works" + p = self.make_name_packet(dns.DNS_OPCODE_UPDATE) + updates = [] + + name = self.get_dns_domain() + + u = self.make_name_question(name, dns.DNS_QTYPE_SOA, dns.DNS_QCLASS_IN) + updates.append(u) + self.finish_name_packet(p, updates) + + updates = [] + r = dns.res_rec() + r.name = "%s" % self.get_dns_domain() + r.rr_type = dns.DNS_QTYPE_MX + r.rr_class = dns.DNS_QCLASS_IN + r.ttl = 900 + r.length = 0xffff + rdata = dns.mx_record() + rdata.preference = 10 + rdata.exchange = 'mail.%s' % self.get_dns_domain() + r.rdata = rdata + updates.append(r) + p.nscount = len(updates) + p.nsrecs = updates + + response = self.dns_transaction_udp(p) + self.assert_dns_rcode_equals(response, dns.DNS_RCODE_OK) + + p = self.make_name_packet(dns.DNS_OPCODE_QUERY) + questions = [] + + name = "%s" % self.get_dns_domain() + q = self.make_name_question(name, dns.DNS_QTYPE_MX, dns.DNS_QCLASS_IN) + questions.append(q) + + self.finish_name_packet(p, questions) + response = self.dns_transaction_udp(p) + self.assert_dns_rcode_equals(response, dns.DNS_RCODE_OK) + self.assertEqual(response.ancount, 1) + self.assertEqual(response.answers[0].rdata.preference, 10) + self.assertEqual(response.answers[0].rdata.exchange, 'mail.%s' % self.get_dns_domain()) + class TestComplexQueries(DNSTest): diff --git a/source4/dns_server/dns_query.c b/source4/dns_server/dns_query.c index 54e0c7f..75f0e9f 100644 --- a/source4/dns_server/dns_query.c +++ b/source4/dns_server/dns_query.c @@ -89,6 +89,14 @@ static WERROR create_response_rr(const struct dns_name_question *question, case DNS_QTYPE_PTR: ans[ai].rdata.ptr_record = talloc_strdup(ans, rec->data.ptr); break; + case DNS_QTYPE_MX: + ans[ai].rdata.mx_record.preference = rec->data.mx.wPriority; + ans[ai].rdata.mx_record.exchange = talloc_strdup( + ans, rec->data.mx.nameTarget); + if (ans[ai].rdata.mx_record.exchange == NULL) { + return WERR_NOMEM; + } + break; case DNS_QTYPE_TXT: tmp = talloc_asprintf(ans, "\"%s\"", rec->data.txt.str[0]); W_ERROR_HAVE_NO_MEMORY(tmp); -- 1.8.1.2