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resolved: tests for dns_packet_append_key() domain name compression

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This commit is contained in:
James Coglan 2024-06-10 12:30:48 +01:00
parent fc838bd42a
commit 1ac8f468b6
1 changed files with 62 additions and 0 deletions
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62
src/resolve/test-dns-packet-append.c
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@ -207,4 +207,66 @@ TEST(packet_append_key_single_soa_any_class) {
ASSERT_EQ(memcmp(DNS_PACKET_DATA(packet), data, sizeof(data)), 0);
}
/* ================================================================
* dns_packet_append_question()
* ================================================================ */
TEST(packet_append_question_compression) {
_cleanup_(dns_packet_unrefp) DnsPacket *packet = NULL;
_cleanup_(dns_question_unrefp) DnsQuestion *question = NULL;
DnsResourceKey *key = NULL;
question = dns_question_new(3);
ASSERT_NOT_NULL(question);
key = dns_resource_key_new(DNS_CLASS_IN, DNS_TYPE_A, "www.example.com");
ASSERT_NOT_NULL(key);
ASSERT_OK(dns_question_add(question, key, 0));
dns_resource_key_unref(key);
key = dns_resource_key_new(DNS_CLASS_IN, DNS_TYPE_MX, "mail.example.com");
ASSERT_NOT_NULL(key);
ASSERT_OK(dns_question_add(question, key, 0));
dns_resource_key_unref(key);
key = dns_resource_key_new(DNS_CLASS_IN, DNS_TYPE_SOA, "host.mail.example.com");
ASSERT_NOT_NULL(key);
ASSERT_OK(dns_question_add(question, key, 0));
dns_resource_key_unref(key);
ASSERT_OK(dns_packet_new(&packet, DNS_PROTOCOL_DNS, 0, DNS_PACKET_SIZE_MAX));
ASSERT_NOT_NULL(packet);
DNS_PACKET_ID(packet) = htobe16(42);
DNS_PACKET_HEADER(packet)->flags = htobe16(DNS_PACKET_MAKE_FLAGS(0, 0, 0, 0, 1, 0, 0, 0, DNS_RCODE_SUCCESS));
DNS_PACKET_HEADER(packet)->qdcount = htobe16(dns_question_size(question));
ASSERT_OK(dns_packet_append_question(packet, question));
const uint8_t data[] = {
0x00, 0x2a, BIT_RD, DNS_RCODE_SUCCESS,
0x00, 0x03, 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',
0xc0, 0x10,
/* MX */ 0x00, 0x0f,
/* IN */ 0x00, 0x01,
/* name */ 0x04, 'h', 'o', 's', 't',
0xc0, 0x21,
/* SOA */ 0x00, 0x06,
/* IN */ 0x00, 0x01
};
ASSERT_EQ(packet->size, sizeof(data));
ASSERT_EQ(memcmp(DNS_PACKET_DATA(packet), data, sizeof(data)), 0);
}
DEFINE_TEST_MAIN(LOG_DEBUG)