1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
|
/*
* Copyright (C) 2019 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package android.net.util;
import static android.net.util.DnsUtils.IPV6_ADDR_SCOPE_GLOBAL;
import static android.net.util.DnsUtils.IPV6_ADDR_SCOPE_LINKLOCAL;
import static android.net.util.DnsUtils.IPV6_ADDR_SCOPE_SITELOCAL;
import static org.junit.Assert.assertEquals;
import android.annotation.NonNull;
import android.annotation.Nullable;
import android.net.InetAddresses;
import android.os.Build;
import androidx.test.filters.SmallTest;
import com.android.testutils.DevSdkIgnoreRule;
import com.android.testutils.DevSdkIgnoreRunner;
import org.junit.Test;
import org.junit.runner.RunWith;
import java.net.InetAddress;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
@RunWith(DevSdkIgnoreRunner.class)
@SmallTest
@DevSdkIgnoreRule.IgnoreUpTo(Build.VERSION_CODES.R)
public class DnsUtilsTest {
private InetAddress stringToAddress(@NonNull String addr) {
return InetAddresses.parseNumericAddress(addr);
}
private DnsUtils.SortableAddress makeSortableAddress(@NonNull String addr) {
return makeSortableAddress(addr, null);
}
private DnsUtils.SortableAddress makeSortableAddress(@NonNull String addr,
@Nullable String srcAddr) {
return new DnsUtils.SortableAddress(stringToAddress(addr),
srcAddr != null ? stringToAddress(srcAddr) : null);
}
@Test
public void testRfc6724Comparator() {
final List<DnsUtils.SortableAddress> test = Arrays.asList(
// Ipv4
makeSortableAddress("216.58.200.36", "192.168.1.1"),
// global with different scope src
makeSortableAddress("2404:6800:4008:801::2004", "fe80::1111:2222"),
// global without src addr
makeSortableAddress("2404:6800:cafe:801::1"),
// loop back
makeSortableAddress("::1", "::1"),
// link local
makeSortableAddress("fe80::c46f:1cff:fe04:39b4", "fe80::1"),
// teredo tunneling
makeSortableAddress("2001::47c1", "2001::2"),
// 6bone without src addr
makeSortableAddress("3ffe::1234:5678"),
// IPv4-compatible
makeSortableAddress("::216.58.200.36", "::216.58.200.9"),
// 6bone
makeSortableAddress("3ffe::1234:5678", "3ffe::1234:1"),
// IPv4-mapped IPv6
makeSortableAddress("::ffff:192.168.95.7", "::ffff:192.168.95.1"));
final List<InetAddress> expected = Arrays.asList(
stringToAddress("::1"), // loop back
stringToAddress("fe80::c46f:1cff:fe04:39b4"), // link local
stringToAddress("216.58.200.36"), // Ipv4
stringToAddress("::ffff:192.168.95.7"), // IPv4-mapped IPv6
stringToAddress("2001::47c1"), // teredo tunneling
stringToAddress("::216.58.200.36"), // IPv4-compatible
stringToAddress("3ffe::1234:5678"), // 6bone
stringToAddress("2404:6800:4008:801::2004"), // global with different scope src
stringToAddress("2404:6800:cafe:801::1"), // global without src addr
stringToAddress("3ffe::1234:5678")); // 6bone without src addr
Collections.sort(test, new DnsUtils.Rfc6724Comparator());
for (int i = 0; i < test.size(); ++i) {
assertEquals(test.get(i).address, expected.get(i));
}
// TODO: add more combinations
}
@Test
public void testV4SortableAddress() {
// Test V4 address
DnsUtils.SortableAddress test = makeSortableAddress("216.58.200.36");
assertEquals(test.hasSrcAddr, 0);
assertEquals(test.prefixMatchLen, 0);
assertEquals(test.address, stringToAddress("216.58.200.36"));
assertEquals(test.labelMatch, 0);
assertEquals(test.scopeMatch, 0);
assertEquals(test.scope, IPV6_ADDR_SCOPE_GLOBAL);
assertEquals(test.label, 4);
assertEquals(test.precedence, 35);
// Test V4 loopback address with the same source address
test = makeSortableAddress("127.1.2.3", "127.1.2.3");
assertEquals(test.hasSrcAddr, 1);
assertEquals(test.prefixMatchLen, 0);
assertEquals(test.address, stringToAddress("127.1.2.3"));
assertEquals(test.labelMatch, 1);
assertEquals(test.scopeMatch, 1);
assertEquals(test.scope, IPV6_ADDR_SCOPE_LINKLOCAL);
assertEquals(test.label, 4);
assertEquals(test.precedence, 35);
}
@Test
public void testV6SortableAddress() {
// Test global address
DnsUtils.SortableAddress test = makeSortableAddress("2404:6800:4008:801::2004");
assertEquals(test.address, stringToAddress("2404:6800:4008:801::2004"));
assertEquals(test.scope, IPV6_ADDR_SCOPE_GLOBAL);
assertEquals(test.label, 1);
assertEquals(test.precedence, 40);
// Test global address with global source address
test = makeSortableAddress("2404:6800:4008:801::2004",
"2401:fa00:fc:fd00:6d6c:7199:b8e7:41d6");
assertEquals(test.address, stringToAddress("2404:6800:4008:801::2004"));
assertEquals(test.hasSrcAddr, 1);
assertEquals(test.scope, IPV6_ADDR_SCOPE_GLOBAL);
assertEquals(test.labelMatch, 1);
assertEquals(test.scopeMatch, 1);
assertEquals(test.label, 1);
assertEquals(test.precedence, 40);
assertEquals(test.prefixMatchLen, 13);
// Test global address with linklocal source address
test = makeSortableAddress("2404:6800:4008:801::2004", "fe80::c46f:1cff:fe04:39b4");
assertEquals(test.hasSrcAddr, 1);
assertEquals(test.scope, IPV6_ADDR_SCOPE_GLOBAL);
assertEquals(test.labelMatch, 1);
assertEquals(test.scopeMatch, 0);
assertEquals(test.label, 1);
assertEquals(test.precedence, 40);
assertEquals(test.prefixMatchLen, 0);
// Test loopback address with the same source address
test = makeSortableAddress("::1", "::1");
assertEquals(test.hasSrcAddr, 1);
assertEquals(test.prefixMatchLen, 16 * 8);
assertEquals(test.labelMatch, 1);
assertEquals(test.scopeMatch, 1);
assertEquals(test.scope, IPV6_ADDR_SCOPE_LINKLOCAL);
assertEquals(test.label, 0);
assertEquals(test.precedence, 50);
// Test linklocal address
test = makeSortableAddress("fe80::c46f:1cff:fe04:39b4");
assertEquals(test.scope, IPV6_ADDR_SCOPE_LINKLOCAL);
assertEquals(test.label, 1);
assertEquals(test.precedence, 40);
// Test linklocal address
test = makeSortableAddress("fe80::");
assertEquals(test.scope, IPV6_ADDR_SCOPE_LINKLOCAL);
assertEquals(test.label, 1);
assertEquals(test.precedence, 40);
// Test 6to4 address
test = makeSortableAddress("2002:c000:0204::");
assertEquals(test.scope, IPV6_ADDR_SCOPE_GLOBAL);
assertEquals(test.label, 2);
assertEquals(test.precedence, 30);
// Test unique local address
test = makeSortableAddress("fc00::c000:13ab");
assertEquals(test.scope, IPV6_ADDR_SCOPE_GLOBAL);
assertEquals(test.label, 13);
assertEquals(test.precedence, 3);
// Test teredo tunneling address
test = makeSortableAddress("2001::47c1");
assertEquals(test.scope, IPV6_ADDR_SCOPE_GLOBAL);
assertEquals(test.label, 5);
assertEquals(test.precedence, 5);
// Test IPv4-compatible addresses
test = makeSortableAddress("::216.58.200.36");
assertEquals(test.scope, IPV6_ADDR_SCOPE_GLOBAL);
assertEquals(test.label, 3);
assertEquals(test.precedence, 1);
// Test site-local address
test = makeSortableAddress("fec0::cafe:3ab2");
assertEquals(test.scope, IPV6_ADDR_SCOPE_SITELOCAL);
assertEquals(test.label, 11);
assertEquals(test.precedence, 1);
// Test 6bone address
test = makeSortableAddress("3ffe::1234:5678");
assertEquals(test.scope, IPV6_ADDR_SCOPE_GLOBAL);
assertEquals(test.label, 12);
assertEquals(test.precedence, 1);
}
}
|
