From e50e5cffded9f4c98871966f559bfae3b438fde3 Mon Sep 17 00:00:00 2001 From: James Coglan Date: Wed, 5 Jun 2024 15:31:05 +0100 Subject: [PATCH] resolved: tests for dns_packet_extract(); parsing of queries --- src/resolve/test-dns-packet-extract.c | 166 ++++++++++++++++++++++++++ 1 file changed, 166 insertions(+) diff --git a/src/resolve/test-dns-packet-extract.c b/src/resolve/test-dns-packet-extract.c index 36a26072c4d..566cc37ee20 100644 --- a/src/resolve/test-dns-packet-extract.c +++ b/src/resolve/test-dns-packet-extract.c @@ -1,6 +1,8 @@ /* SPDX-License-Identifier: LGPL-2.1-or-later */ +#include "dns-type.h" #include "resolved-dns-packet.h" +#include "resolved-dns-rr.h" #include "log.h" #include "tests.h" @@ -249,4 +251,168 @@ TEST(packet_header_reply_dnssec_bits) { ASSERT_EQ(DNS_PACKET_ARCOUNT(packet), 0); } +/* ================================================================ + * queries + * ================================================================ */ + +TEST(packet_query_single) { + _cleanup_(dns_packet_unrefp) DnsPacket *packet = NULL; + _cleanup_(dns_resource_key_unrefp) DnsResourceKey *key = NULL; + + ASSERT_OK(dns_packet_new(&packet, DNS_PROTOCOL_DNS, 0, DNS_PACKET_SIZE_MAX)); + ASSERT_NOT_NULL(packet); + dns_packet_truncate(packet, 0); + + const uint8_t data[] = { + 0x00, 0x42, 0x00, 0x00, + 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + + /* name */ 0x03, 'w', 'w', 'w', + 0x07, 'e', 'x', 'a', 'm', 'p', 'l', 'e', + 0x03, 'c', 'o', 'm', + 0x00, + /* A */ 0x00, 0x01, + /* IN */ 0x00, 0x01 + }; + + ASSERT_OK(dns_packet_append_blob(packet, data, sizeof(data), NULL)); + + ASSERT_OK(dns_packet_extract(packet)); + ASSERT_EQ(dns_question_size(packet->question), 1u); + ASSERT_EQ(dns_answer_size(packet->answer), 0u); + + key = dns_resource_key_new(DNS_CLASS_IN, DNS_TYPE_A, "www.example.com"); + ASSERT_NOT_NULL(key); + ASSERT_TRUE(dns_question_contains_key(packet->question, key)); +} + +TEST(packet_query_multi) { + _cleanup_(dns_packet_unrefp) DnsPacket *packet = NULL; + DnsResourceKey *key = NULL; + + ASSERT_OK(dns_packet_new(&packet, DNS_PROTOCOL_DNS, 0, DNS_PACKET_SIZE_MAX)); + ASSERT_NOT_NULL(packet); + dns_packet_truncate(packet, 0); + + const uint8_t data[] = { + 0x00, 0x42, 0x00, 0x00, + 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + + /* name */ 0x03, 'w', 'w', 'w', + 0x07, 'e', 'x', 'a', 'm', 'p', 'l', 'e', + 0x03, 'c', 'o', 'm', + 0x00, + /* A */ 0x00, 0x01, + /* IN */ 0x00, 0x01, + + /* name */ 0x04, 'm', 'a', 'i', 'l', + 0x07, 'e', 'x', 'a', 'm', 'p', 'l', 'e', + 0x03, 'c', 'o', 'm', + 0x00, + /* MX */ 0x00, 0x0f, + /* ANY */ 0x00, 0xff + }; + + ASSERT_OK(dns_packet_append_blob(packet, data, sizeof(data), NULL)); + + ASSERT_OK(dns_packet_extract(packet)); + ASSERT_EQ(dns_question_size(packet->question), 2u); + ASSERT_EQ(dns_answer_size(packet->answer), 0u); + + key = dns_resource_key_new(DNS_CLASS_IN, DNS_TYPE_A, "www.example.com"); + ASSERT_NOT_NULL(key); + ASSERT_TRUE(dns_question_contains_key(packet->question, key)); + dns_resource_key_unref(key); + + key = dns_resource_key_new(DNS_CLASS_ANY, DNS_TYPE_MX, "mail.example.com"); + ASSERT_NOT_NULL(key); + ASSERT_TRUE(dns_question_contains_key(packet->question, key)); + dns_resource_key_unref(key); +} + +TEST(packet_query_multi_compressed_domain_1) { + _cleanup_(dns_packet_unrefp) DnsPacket *packet = NULL; + DnsResourceKey *key = NULL; + + ASSERT_OK(dns_packet_new(&packet, DNS_PROTOCOL_DNS, 0, DNS_PACKET_SIZE_MAX)); + ASSERT_NOT_NULL(packet); + dns_packet_truncate(packet, 0); + + const uint8_t data[] = { + 0x00, 0x42, 0x00, 0x00, + 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + + /* name */ 0x03, 'w', 'w', 'w', + 0x07, 'e', 'x', 'a', 'm', 'p', 'l', 'e', + 0x03, 'c', 'o', 'm', + 0x00, + /* A */ 0x00, 0x01, + /* IN */ 0x00, 0x01, + + /* name */ 0x04, 'm', 'a', 'i', 'l', + 0x07, 'e', 'x', 'a', 'm', 'p', 'l', 'e', + 0xc0, 0x18, + /* MX */ 0x00, 0x0f, + /* ANY */ 0x00, 0xff + }; + + ASSERT_OK(dns_packet_append_blob(packet, data, sizeof(data), NULL)); + + ASSERT_OK(dns_packet_extract(packet)); + ASSERT_EQ(dns_question_size(packet->question), 2u); + ASSERT_EQ(dns_answer_size(packet->answer), 0u); + + key = dns_resource_key_new(DNS_CLASS_IN, DNS_TYPE_A, "www.example.com"); + ASSERT_NOT_NULL(key); + ASSERT_TRUE(dns_question_contains_key(packet->question, key)); + dns_resource_key_unref(key); + + key = dns_resource_key_new(DNS_CLASS_ANY, DNS_TYPE_MX, "mail.example.com"); + ASSERT_NOT_NULL(key); + ASSERT_TRUE(dns_question_contains_key(packet->question, key)); + dns_resource_key_unref(key); +} + +TEST(packet_query_multi_compressed_domain_2) { + _cleanup_(dns_packet_unrefp) DnsPacket *packet = NULL; + DnsResourceKey *key = NULL; + + ASSERT_OK(dns_packet_new(&packet, DNS_PROTOCOL_DNS, 0, DNS_PACKET_SIZE_MAX)); + ASSERT_NOT_NULL(packet); + dns_packet_truncate(packet, 0); + + const uint8_t data[] = { + 0x00, 0x42, 0x00, 0x00, + 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + + /* name */ 0x03, 'w', 'w', 'w', + 0x07, 'e', 'x', 'a', 'm', 'p', 'l', 'e', + 0x03, 'c', 'o', 'm', + 0x00, + /* AAAA */ 0x00, 0x1c, + /* IN */ 0x00, 0x01, + + /* name */ 0x04, 'm', 'a', 'i', 'l', + 0xc0, 0x10, + /* MX */ 0x00, 0x0f, + /* ANY */ 0x00, 0xff + }; + + ASSERT_OK(dns_packet_append_blob(packet, data, sizeof(data), NULL)); + + ASSERT_OK(dns_packet_extract(packet)); + ASSERT_EQ(dns_question_size(packet->question), 2u); + ASSERT_EQ(dns_answer_size(packet->answer), 0u); + + key = dns_resource_key_new(DNS_CLASS_IN, DNS_TYPE_AAAA, "www.example.com"); + ASSERT_NOT_NULL(key); + ASSERT_TRUE(dns_question_contains_key(packet->question, key)); + dns_resource_key_unref(key); + + key = dns_resource_key_new(DNS_CLASS_ANY, DNS_TYPE_MX, "mail.example.com"); + ASSERT_NOT_NULL(key); + ASSERT_TRUE(dns_question_contains_key(packet->question, key)); + dns_resource_key_unref(key); +} + DEFINE_TEST_MAIN(LOG_DEBUG) -- 2.47.3