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resolved: tests for dns_packet_extract(); parsing NAPTR records

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James Coglan
2024-07-22 10:09:23 +01:00
parent b0a0743b71
commit 99fe3607ca
1 changed files with 104 additions and 0 deletions
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src/resolve/test-dns-packet-extract.c
+104
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@@ -2103,6 +2103,110 @@ TEST(packet_reply_srv_allow_non_srv_names) {
dns_resource_record_unref(rr);
}
/* ================================================================
* reply: NAPTR
* ================================================================ */
TEST(packet_reply_naptr_basic) {
_cleanup_(dns_packet_unrefp) DnsPacket *packet = NULL;
DnsResourceRecord *rr = 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, BIT_QR | BIT_AA, DNS_RCODE_SUCCESS,
0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00,
/* name */ 0x01, '4', 0x01, '3', 0x01, '2', 0x01, '1',
0x01, '5', 0x01, '5', 0x01, '5',
0x01, '0', 0x01, '0', 0x01, '8', 0x01, '1',
0x04, 'e', '1', '6', '4',
0x04, 'a', 'r', 'p', 'a',
0x00,
/* NAPTR */ 0x00, 0x23,
/* IN */ 0x00, 0x01,
/* ttl */ 0x00, 0x00, 0x0e, 0x10,
/* rdata */ 0x00, 0x4d,
/* order */ 0x00, 0x66,
/* pref */ 0x00, 0x0a,
/* flags */ 0x01, 'U',
/* services */ 0x07, 'E', '2', 'U', '+', 's', 'i', 'p',
/* regexp */ 0x27,
'!', '^', '.', '*', '$', '!', 's', 'i',
'p', ':', 'c', 'u', 's', 't', 'o', 'm',
'e', 'r', '-', 's', 'e', 'r', 'v', 'i',
'c', 'e', '@', 'e', 'x', 'a', 'm', 'p',
'l', 'e', '.', 'c', 'o', 'm', '!',
/* replace */ 0x04, '_', 's', 'i', 'p',
0x04, '_', 'u', 'd', 'p',
0x07, 'e', 'x', 'a', 'm', 'p', 'l', 'e',
0x03, 'c', 'o', 'm',
0x00
};
ASSERT_OK(dns_packet_append_blob(packet, data, sizeof(data), NULL));
ASSERT_OK(dns_packet_extract(packet));
ASSERT_EQ(dns_question_size(packet->question), 0u);
ASSERT_EQ(dns_answer_size(packet->answer), 1u);
rr = dns_resource_record_new_full(DNS_CLASS_IN, DNS_TYPE_NAPTR, "4.3.2.1.5.5.5.0.0.8.1.e164.arpa");
ASSERT_NOT_NULL(rr);
rr->ttl = 3600;
rr->naptr.order = 102;
rr->naptr.preference = 10;
rr->naptr.flags = strdup("U");
rr->naptr.services = strdup("E2U+sip");
rr->naptr.regexp = strdup("!^.*$!sip:customer-service@example.com!");
rr->naptr.replacement = strdup("_sip._udp.example.com");
check_answer_contains(packet, rr, DNS_ANSWER_SECTION_ANSWER | DNS_ANSWER_CACHEABLE);
dns_resource_record_unref(rr);
}
TEST(packet_reply_naptr_compressed_replace) {
_cleanup_(dns_packet_unrefp) DnsPacket *packet = 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, BIT_QR | BIT_AA, DNS_RCODE_SUCCESS,
0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00,
/* name */ 0x01, '4', 0x01, '3', 0x01, '2', 0x01, '1',
0x07, 'e', 'x', 'a', 'm', 'p', 'l', 'e',
0x03, 'c', 'o', 'm',
0x00,
/* NAPTR */ 0x00, 0x23,
/* IN */ 0x00, 0x01,
/* ttl */ 0x00, 0x00, 0x0e, 0x10,
/* rdata */ 0x00, 0x4d,
/* order */ 0x00, 0x66,
/* pref */ 0x00, 0x0a,
/* flags */ 0x01, 'U',
/* services */ 0x07, 'E', '2', 'U', '+', 's', 'i', 'p',
/* regexp */ 0x27,
'!', '^', '.', '*', '$', '!', 's', 'i',
'p', ':', 'c', 'u', 's', 't', 'o', 'm',
'e', 'r', '-', 's', 'e', 'r', 'v', 'i',
'c', 'e', '@', 'e', 'x', 'a', 'm', 'p',
'l', 'e', '.', 'c', 'o', 'm', '!',
/* replace */ 0x04, '_', 's', 'i', 'p',
0x04, '_', 'u', 'd', 'p',
0xc0, 0x14
};
ASSERT_OK(dns_packet_append_blob(packet, data, sizeof(data), NULL));
ASSERT_ERROR(dns_packet_extract(packet), EBADMSG);
ASSERT_EQ(dns_question_size(packet->question), 0u);
ASSERT_EQ(dns_answer_size(packet->answer), 0u);
}
/* ================================================================
* reply: RRSIG
* ================================================================ */