1 /* MIT License
2 *
3 * Copyright (c) The c-ares project and its contributors
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a copy
6 * of this software and associated documentation files (the "Software"), to deal
7 * in the Software without restriction, including without limitation the rights
8 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
9 * copies of the Software, and to permit persons to whom the Software is
10 * furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
14 * Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22 * SOFTWARE.
23 *
24 * SPDX-License-Identifier: MIT
25 */
26 #include "ares-test.h"
27 #include "dns-proto.h"
28
29 #include <vector>
30
31 namespace ares {
32 namespace test {
33
TEST(DNSProto,EncodeQuestions)34 TEST(DNSProto, EncodeQuestions) {
35 DNSPacket pkt;
36 pkt.set_qid(0x1234).set_response().set_aa()
37 .add_question(new DNSQuestion("example.com.", T_A))
38 .add_question(new DNSQuestion("www.example.com", T_AAAA, C_CHAOS));
39
40 std::vector<byte> data = {
41 0x12, 0x34, // qid
42 0x84, // response + query + AA + not-TC + not-RD
43 0x00, // not-RA + not-Z + not-AD + not-CD + rc=NoError
44 0x00, 0x02, // num questions
45 0x00, 0x00, // num answer RRs
46 0x00, 0x00, // num authority RRs
47 0x00, 0x00, // num additional RRs
48 // Question 1
49 0x07, 'e', 'x', 'a', 'm', 'p', 'l', 'e',
50 0x03, 'c', 'o', 'm',
51 0x00,
52 0x00, 0x01, // type A
53 0x00, 0x01, // class IN
54 // Question 2
55 0x03, 'w', 'w', 'w',
56 0x07, 'e', 'x', 'a', 'm', 'p', 'l', 'e',
57 0x03, 'c', 'o', 'm',
58 0x00,
59 0x00, 0x1C, // type AAAA = 28
60 0x00, 0x03, // class CHAOS = 3
61 };
62 EXPECT_EQ(data, pkt.data());
63 }
64
TEST(DNSProto,EncodeSingleNameAnswers)65 TEST(DNSProto, EncodeSingleNameAnswers) {
66 DNSPacket pkt;
67 pkt.qid_ = 0x1234;
68 pkt.response_ = true;
69 pkt.aa_ = true;
70 pkt.opcode_ = O_QUERY;
71 pkt.add_answer(new DNSCnameRR("example.com", 0x01020304, "other.com."));
72 pkt.add_auth(new DNSPtrRR("www.example.com", 0x01020304, "www.other.com"));
73
74 std::vector<byte> data = {
75 0x12, 0x34, // qid
76 0x84, // response + query + AA + not-TC + not-RD
77 0x00, // not-RA + not-Z + not-AD + not-CD + rc=NoError
78 0x00, 0x00, // num questions
79 0x00, 0x01, // num answer RRs
80 0x00, 0x01, // num authority RRs
81 0x00, 0x00, // num additional RRs
82 // Answer 1
83 0x07, 'e', 'x', 'a', 'm', 'p', 'l', 'e',
84 0x03, 'c', 'o', 'm',
85 0x00,
86 0x00, 0x05, // RR type
87 0x00, 0x01, // class IN
88 0x01, 0x02, 0x03, 0x04, // TTL
89 0x00, 0x0B, // rdata length
90 0x05, 'o', 't', 'h', 'e', 'r',
91 0x03, 'c', 'o', 'm',
92 0x00,
93 // Authority 1
94 0x03, 'w', 'w', 'w',
95 0x07, 'e', 'x', 'a', 'm', 'p', 'l', 'e',
96 0x03, 'c', 'o', 'm',
97 0x00,
98 0x00, 0x0c, // RR type
99 0x00, 0x01, // class IN
100 0x01, 0x02, 0x03, 0x04, // TTL
101 0x00, 0x0F, // rdata length
102 0x03, 'w', 'w', 'w',
103 0x05, 'o', 't', 'h', 'e', 'r',
104 0x03, 'c', 'o', 'm',
105 0x00,
106 };
107 EXPECT_EQ(data, pkt.data());
108 }
109
TEST(DNSProto,EncodeAddressAnswers)110 TEST(DNSProto, EncodeAddressAnswers) {
111 DNSPacket pkt;
112 pkt.qid_ = 0x1234;
113 pkt.response_ = true;
114 pkt.aa_ = true;
115 pkt.opcode_ = O_QUERY;
116 std::vector<byte> addrv4 = {0x02, 0x03, 0x04, 0x05};
117 pkt.add_answer(new DNSARR("example.com", 0x01020304, addrv4));
118 byte addrv6[16] = {0x01, 0x01, 0x01, 0x01, 0x02, 0x02, 0x02, 0x02,
119 0x03, 0x03, 0x03, 0x03, 0x04, 0x04, 0x04, 0x04};
120 pkt.add_additional(new DNSAaaaRR("www.example.com", 0x01020304, addrv6, 16));
121
122 std::vector<byte> data = {
123 0x12, 0x34, // qid
124 0x84, // response + query + AA + not-TC + not-RD
125 0x00, // not-RA + not-Z + not-AD + not-CD + rc=NoError
126 0x00, 0x00, // num questions
127 0x00, 0x01, // num answer RRs
128 0x00, 0x00, // num authority RRs
129 0x00, 0x01, // num additional RRs
130 // Answer 1
131 0x07, 'e', 'x', 'a', 'm', 'p', 'l', 'e',
132 0x03, 'c', 'o', 'm',
133 0x00,
134 0x00, 0x01, // RR type
135 0x00, 0x01, // class IN
136 0x01, 0x02, 0x03, 0x04, // TTL
137 0x00, 0x04, // rdata length
138 0x02, 0x03, 0x04, 0x05,
139 // Additional 1
140 0x03, 'w', 'w', 'w',
141 0x07, 'e', 'x', 'a', 'm', 'p', 'l', 'e',
142 0x03, 'c', 'o', 'm',
143 0x00,
144 0x00, 0x1c, // RR type
145 0x00, 0x01, // class IN
146 0x01, 0x02, 0x03, 0x04, // TTL
147 0x00, 0x10, // rdata length
148 0x01, 0x01, 0x01, 0x01, 0x02, 0x02, 0x02, 0x02,
149 0x03, 0x03, 0x03, 0x03, 0x04, 0x04, 0x04, 0x04
150 };
151 EXPECT_EQ(data, pkt.data());
152 }
153
154
155 } // namespace test
156 } // namespace ares
157