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resolved: tests for dns_packet_extract(); parsing SRV records
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James Coglan
parent
887bc36231
commit
02ea4cb919
@ -1788,4 +1788,179 @@ TEST(packet_reply_soa_rdata_partial_final_field) {
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ASSERT_EQ(dns_answer_size(packet->answer), 0u);
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}
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/* ================================================================
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* reply: SRV
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* ================================================================ */
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TEST(packet_reply_srv_with_a) {
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_cleanup_(dns_packet_unrefp) DnsPacket *packet = NULL;
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DnsResourceRecord *rr = NULL;
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ASSERT_OK(dns_packet_new(&packet, DNS_PROTOCOL_DNS, 0, DNS_PACKET_SIZE_MAX));
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ASSERT_NOT_NULL(packet);
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dns_packet_truncate(packet, 0);
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const uint8_t data[] = {
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0x00, 0x42, BIT_QR | BIT_AA, DNS_RCODE_SUCCESS,
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0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01,
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/* name */ 0x05, '_', 'l', 'd', 'a', 'p',
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0x04, '_', 't', 'c', 'p',
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0x07, 'e', 'x', 'a', 'm', 'p', 'l', 'e',
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0x03, 'c', 'o', 'm',
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0x00,
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/* SRV */ 0x00, 0x21,
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/* IN */ 0x00, 0x01,
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/* ttl */ 0x00, 0x00, 0x0e, 0x10,
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/* rdata */ 0x00, 0x19,
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/* priority */ 0x43, 0x21,
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/* weight */ 0x65, 0x78,
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/* port */ 0x01, 0x85,
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/* name */ 0x05, 'c', 'l', 'o', 'u', 'd',
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0x07, 'e', 'x', 'a', 'm', 'p', 'l', 'e',
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0x03, 'c', 'o', 'm',
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0x00,
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/* name */ 0xc0, 0x34,
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/* A */ 0x00, 0x01,
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/* IN */ 0x00, 0x01,
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/* ttl */ 0x00, 0x00, 0x0e, 0x10,
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/* rdata */ 0x00, 0x04,
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/* ip */ 0xc0, 0xa8, 0x01, 0x7f
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};
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ASSERT_OK(dns_packet_append_blob(packet, data, sizeof(data), NULL));
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ASSERT_OK(dns_packet_extract(packet));
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ASSERT_EQ(dns_question_size(packet->question), 0u);
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ASSERT_EQ(dns_answer_size(packet->answer), 2u);
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rr = dns_resource_record_new_full(DNS_CLASS_IN, DNS_TYPE_SRV, "_ldap._tcp.example.com");
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ASSERT_NOT_NULL(rr);
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rr->ttl = 3600;
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rr->srv.priority = 17185;
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rr->srv.weight = 25976;
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rr->srv.port = 389;
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rr->srv.name = strdup("cloud.example.com");
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check_answer_contains(packet, rr, DNS_ANSWER_SECTION_ANSWER | DNS_ANSWER_CACHEABLE);
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dns_resource_record_unref(rr);
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rr = dns_resource_record_new_full(DNS_CLASS_IN, DNS_TYPE_A, "cloud.example.com");
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ASSERT_NOT_NULL(rr);
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rr->ttl = 3600;
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rr->a.in_addr.s_addr = htobe32(0xc0a8017f);
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check_answer_contains(packet, rr, DNS_ANSWER_SECTION_ADDITIONAL);
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dns_resource_record_unref(rr);
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}
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/* we allow compression of the SRV target field even though RFC 2782 advises against it */
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TEST(packet_reply_srv_compression) {
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_cleanup_(dns_packet_unrefp) DnsPacket *packet = NULL;
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DnsResourceRecord *rr = NULL;
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ASSERT_OK(dns_packet_new(&packet, DNS_PROTOCOL_DNS, 0, DNS_PACKET_SIZE_MAX));
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ASSERT_NOT_NULL(packet);
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dns_packet_truncate(packet, 0);
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const uint8_t data[] = {
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0x00, 0x42, BIT_QR | BIT_AA, DNS_RCODE_SUCCESS,
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0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01,
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/* name */ 0x05, '_', 'l', 'd', 'a', 'p',
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0x04, '_', 't', 'c', 'p',
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0x07, 'e', 'x', 'a', 'm', 'p', 'l', 'e',
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0x03, 'c', 'o', 'm',
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0x00,
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/* SRV */ 0x00, 0x21,
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/* IN */ 0x00, 0x01,
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/* ttl */ 0x00, 0x00, 0x0e, 0x10,
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/* rdata */ 0x00, 0x0e,
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/* priority */ 0x00, 0x0a,
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/* weight */ 0x00, 0x05,
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/* port */ 0x01, 0x85,
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/* name */ 0x05, 'c', 'l', 'o', 'u', 'd',
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0xc0, 0x17,
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/* name */ 0xc0, 0x34,
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/* A */ 0x00, 0x01,
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/* IN */ 0x00, 0x01,
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/* ttl */ 0x00, 0x00, 0x0e, 0x10,
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/* rdata */ 0x00, 0x04,
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/* ip */ 0xc0, 0xa8, 0x01, 0x7f
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};
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ASSERT_OK(dns_packet_append_blob(packet, data, sizeof(data), NULL));
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ASSERT_OK(dns_packet_extract(packet));
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ASSERT_EQ(dns_question_size(packet->question), 0u);
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ASSERT_EQ(dns_answer_size(packet->answer), 2u);
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rr = dns_resource_record_new_full(DNS_CLASS_IN, DNS_TYPE_SRV, "_ldap._tcp.example.com");
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ASSERT_NOT_NULL(rr);
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rr->ttl = 3600;
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rr->srv.priority = 10;
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rr->srv.weight = 5;
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rr->srv.port = 389;
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rr->srv.name = strdup("cloud.example.com");
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check_answer_contains(packet, rr, DNS_ANSWER_SECTION_ANSWER | DNS_ANSWER_CACHEABLE);
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dns_resource_record_unref(rr);
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rr = dns_resource_record_new_full(DNS_CLASS_IN, DNS_TYPE_A, "cloud.example.com");
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ASSERT_NOT_NULL(rr);
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rr->ttl = 3600;
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rr->a.in_addr.s_addr = htobe32(0xc0a8017f);
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check_answer_contains(packet, rr, DNS_ANSWER_SECTION_ADDITIONAL);
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dns_resource_record_unref(rr);
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}
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TEST(packet_reply_srv_allow_non_srv_names) {
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_cleanup_(dns_packet_unrefp) DnsPacket *packet = NULL;
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DnsResourceRecord *rr = NULL;
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ASSERT_OK(dns_packet_new(&packet, DNS_PROTOCOL_DNS, 0, DNS_PACKET_SIZE_MAX));
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ASSERT_NOT_NULL(packet);
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dns_packet_truncate(packet, 0);
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const uint8_t data[] = {
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0x00, 0x42, BIT_QR | BIT_AA, DNS_RCODE_SUCCESS,
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0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00,
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/* name */ 0x03, 'w', 'w', 'w',
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0x07, 'e', 'x', 'a', 'm', 'p', 'l', 'e',
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0x03, 'c', 'o', 'm',
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0x00,
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/* SRV */ 0x00, 0x21,
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/* IN */ 0x00, 0x01,
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/* ttl */ 0x00, 0x00, 0x0e, 0x10,
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/* rdata */ 0x00, 0x0e,
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/* priority */ 0x00, 0x0a,
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/* weight */ 0x00, 0x05,
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/* port */ 0x01, 0x85,
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/* name */ 0x05, 'c', 'l', 'o', 'u', 'd',
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0xc0, 0x10
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};
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ASSERT_OK(dns_packet_append_blob(packet, data, sizeof(data), NULL));
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ASSERT_OK(dns_packet_extract(packet));
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ASSERT_EQ(dns_question_size(packet->question), 0u);
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ASSERT_EQ(dns_answer_size(packet->answer), 1u);
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rr = dns_resource_record_new_full(DNS_CLASS_IN, DNS_TYPE_SRV, "www.example.com");
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ASSERT_NOT_NULL(rr);
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rr->ttl = 3600;
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rr->srv.priority = 10;
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rr->srv.weight = 5;
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rr->srv.port = 389;
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rr->srv.name = strdup("cloud.example.com");
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check_answer_contains(packet, rr, DNS_ANSWER_SECTION_ANSWER | DNS_ANSWER_CACHEABLE);
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dns_resource_record_unref(rr);
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}
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DEFINE_TEST_MAIN(LOG_DEBUG)
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