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/*
* Copyright (C) The c-ares project
*
* Permission to use, copy, modify, and distribute this
* software and its documentation for any purpose and without
* fee is hereby granted, provided that the above copyright
* notice appear in all copies and that both that copyright
* notice and this permission notice appear in supporting
* documentation, and that the name of M.I.T. not be used in
* advertising or publicity pertaining to distribution of the
* software without specific, written prior permission.
* M.I.T. makes no representations about the suitability of
* this software for any purpose. It is provided "as is"
* without express or implied warranty.
*
* SPDX-License-Identifier: MIT
*/
#include "ares-test.h"
#include "dns-proto.h"
#include <vector>
namespace ares {
namespace test {
TEST(DNSProto, EncodeQuestions) {
DNSPacket pkt;
pkt.set_qid(0x1234).set_response().set_aa()
.add_question(new DNSQuestion("example.com.", T_A))
.add_question(new DNSQuestion("www.example.com", T_AAAA, C_CHAOS));
std::vector<byte> data = {
0x12, 0x34, // qid
0x84, // response + query + AA + not-TC + not-RD
0x00, // not-RA + not-Z + not-AD + not-CD + rc=NoError
0x00, 0x02, // num questions
0x00, 0x00, // num answer RRs
0x00, 0x00, // num authority RRs
0x00, 0x00, // num additional RRs
// Question 1
0x07, 'e', 'x', 'a', 'm', 'p', 'l', 'e',
0x03, 'c', 'o', 'm',
0x00,
0x00, 0x01, // type A
0x00, 0x01, // class IN
// Question 2
0x03, 'w', 'w', 'w',
0x07, 'e', 'x', 'a', 'm', 'p', 'l', 'e',
0x03, 'c', 'o', 'm',
0x00,
0x00, 0x1C, // type AAAA = 28
0x00, 0x03, // class CHAOS = 3
};
EXPECT_EQ(data, pkt.data());
}
TEST(DNSProto, EncodeSingleNameAnswers) {
DNSPacket pkt;
pkt.qid_ = 0x1234;
pkt.response_ = true;
pkt.aa_ = true;
pkt.opcode_ = O_QUERY;
pkt.add_answer(new DNSCnameRR("example.com", 0x01020304, "other.com."));
pkt.add_auth(new DNSPtrRR("www.example.com", 0x01020304, "www.other.com"));
std::vector<byte> data = {
0x12, 0x34, // qid
0x84, // response + query + AA + not-TC + not-RD
0x00, // not-RA + not-Z + not-AD + not-CD + rc=NoError
0x00, 0x00, // num questions
0x00, 0x01, // num answer RRs
0x00, 0x01, // num authority RRs
0x00, 0x00, // num additional RRs
// Answer 1
0x07, 'e', 'x', 'a', 'm', 'p', 'l', 'e',
0x03, 'c', 'o', 'm',
0x00,
0x00, 0x05, // RR type
0x00, 0x01, // class IN
0x01, 0x02, 0x03, 0x04, // TTL
0x00, 0x0B, // rdata length
0x05, 'o', 't', 'h', 'e', 'r',
0x03, 'c', 'o', 'm',
0x00,
// Authority 1
0x03, 'w', 'w', 'w',
0x07, 'e', 'x', 'a', 'm', 'p', 'l', 'e',
0x03, 'c', 'o', 'm',
0x00,
0x00, 0x0c, // RR type
0x00, 0x01, // class IN
0x01, 0x02, 0x03, 0x04, // TTL
0x00, 0x0F, // rdata length
0x03, 'w', 'w', 'w',
0x05, 'o', 't', 'h', 'e', 'r',
0x03, 'c', 'o', 'm',
0x00,
};
EXPECT_EQ(data, pkt.data());
}
TEST(DNSProto, EncodeAddressAnswers) {
DNSPacket pkt;
pkt.qid_ = 0x1234;
pkt.response_ = true;
pkt.aa_ = true;
pkt.opcode_ = O_QUERY;
std::vector<byte> addrv4 = {0x02, 0x03, 0x04, 0x05};
pkt.add_answer(new DNSARR("example.com", 0x01020304, addrv4));
byte addrv6[16] = {0x01, 0x01, 0x01, 0x01, 0x02, 0x02, 0x02, 0x02,
0x03, 0x03, 0x03, 0x03, 0x04, 0x04, 0x04, 0x04};
pkt.add_additional(new DNSAaaaRR("www.example.com", 0x01020304, addrv6, 16));
std::vector<byte> data = {
0x12, 0x34, // qid
0x84, // response + query + AA + not-TC + not-RD
0x00, // not-RA + not-Z + not-AD + not-CD + rc=NoError
0x00, 0x00, // num questions
0x00, 0x01, // num answer RRs
0x00, 0x00, // num authority RRs
0x00, 0x01, // num additional RRs
// Answer 1
0x07, 'e', 'x', 'a', 'm', 'p', 'l', 'e',
0x03, 'c', 'o', 'm',
0x00,
0x00, 0x01, // RR type
0x00, 0x01, // class IN
0x01, 0x02, 0x03, 0x04, // TTL
0x00, 0x04, // rdata length
0x02, 0x03, 0x04, 0x05,
// Additional 1
0x03, 'w', 'w', 'w',
0x07, 'e', 'x', 'a', 'm', 'p', 'l', 'e',
0x03, 'c', 'o', 'm',
0x00,
0x00, 0x1c, // RR type
0x00, 0x01, // class IN
0x01, 0x02, 0x03, 0x04, // TTL
0x00, 0x10, // rdata length
0x01, 0x01, 0x01, 0x01, 0x02, 0x02, 0x02, 0x02,
0x03, 0x03, 0x03, 0x03, 0x04, 0x04, 0x04, 0x04
};
EXPECT_EQ(data, pkt.data());
}
} // namespace test
} // namespace ares
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