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
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
|
#include <arpa/inet.h>
#include <sys/socket.h>
#include <assert.h>
#include <errno.h>
#include <netdb.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#if EMSCRIPTEN
#include <emscripten.h>
#endif
int main() {
struct addrinfo hints;
struct addrinfo *servinfo;
struct sockaddr_in *sa4;
struct sockaddr_in6 *sa6;
int err;
// no name or service
err = getaddrinfo(NULL, NULL, NULL, &servinfo);
assert(err == EAI_NONAME);
// invalid socket type
memset(&hints, 0, sizeof(hints));
hints.ai_family = AF_INET;
hints.ai_socktype = 9999;
err = getaddrinfo("www.mozilla.org", "80", &hints, &servinfo);
#ifdef __APPLE__
assert(err == EAI_BADHINTS);
#else
assert(err == EAI_SOCKTYPE);
#endif
// invalid family
memset(&hints, 0, sizeof(hints));
hints.ai_family = AF_UNIX;
hints.ai_socktype = SOCK_STREAM;
err = getaddrinfo("www.mozilla.org", "80", &hints, &servinfo);
assert(err == EAI_FAMILY);
// invalid service
memset(&hints, 0, sizeof(hints));
hints.ai_family = AF_INET;
hints.ai_socktype = SOCK_STREAM;
err = getaddrinfo("www.mozilla.org", "foobar", &hints, &servinfo);
#ifdef __APPLE__
assert(err == EAI_NONAME);
#else
assert(err == EAI_SERVICE);
#endif
// test loopback resolution (ipv4)
memset(&hints, 0, sizeof(hints));
hints.ai_family = AF_INET;
hints.ai_socktype = SOCK_STREAM;
err = getaddrinfo(NULL, "80", &hints, &servinfo);
assert(!err);
sa4 = ((struct sockaddr_in*)servinfo->ai_addr);
assert(servinfo->ai_family == AF_INET);
assert(servinfo->ai_socktype == SOCK_STREAM);
assert(*(uint32_t*)&(sa4->sin_addr) == ntohl(INADDR_LOOPBACK));
assert(sa4->sin_port == ntohs(80));
freeaddrinfo(servinfo);
// test loopback resolution (ipv6)
memset(&hints, 0, sizeof(hints));
hints.ai_family = AF_INET6;
hints.ai_socktype = SOCK_STREAM;
err = getaddrinfo(NULL, "81", &hints, &servinfo);
assert(!err);
sa6 = ((struct sockaddr_in6*)servinfo->ai_addr);
assert(servinfo->ai_family == AF_INET6);
assert(servinfo->ai_socktype == SOCK_STREAM);
memcmp(&sa6->sin6_addr, &in6addr_loopback, sizeof(in6addr_loopback));
assert(sa6->sin6_port == ntohs(81));
freeaddrinfo(servinfo);
// test bind preparation
memset(&hints, 0, sizeof(hints));
hints.ai_flags = AI_PASSIVE;
hints.ai_family = AF_INET;
hints.ai_socktype = SOCK_STREAM;
err = getaddrinfo(NULL, "82", &hints, &servinfo);
assert(!err);
sa4 = ((struct sockaddr_in*)servinfo->ai_addr);
assert(servinfo->ai_family == AF_INET);
assert(servinfo->ai_socktype == SOCK_STREAM);
assert(*(uint32_t*)&(sa4->sin_addr) == 0);
assert(sa4->sin_port == ntohs(82));
freeaddrinfo(servinfo);
// test numeric address (ipv4)
memset(&hints, 0, sizeof(hints));
hints.ai_family = AF_INET;
hints.ai_socktype = SOCK_DGRAM;
err = getaddrinfo("1.2.3.4", "83", &hints, &servinfo);
assert(!err);
sa4 = ((struct sockaddr_in*)servinfo->ai_addr);
assert(servinfo->ai_family == AF_INET);
assert(servinfo->ai_socktype == SOCK_DGRAM);
assert(*(uint32_t*)&(sa4->sin_addr) == 67305985);
assert(sa4->sin_port == ntohs(83));
freeaddrinfo(servinfo);
// test numeric address (ipv4 address specified as ipv6 with AI_V4MAPPED)
memset(&hints, 0, sizeof(hints));
hints.ai_flags = AI_V4MAPPED;
hints.ai_family = AF_INET6;
hints.ai_socktype = SOCK_STREAM;
err = getaddrinfo("1.2.3.4", "84", &hints, &servinfo);
assert(!err);
sa6 = ((struct sockaddr_in6*)servinfo->ai_addr);
assert(servinfo->ai_family == AF_INET6);
assert(servinfo->ai_socktype == SOCK_STREAM);
assert(*((uint32_t*)&(sa6->sin6_addr)+2) == htonl(0xffff));
assert(*((uint32_t*)&(sa6->sin6_addr)+3) == 67305985);
assert(sa6->sin6_port == ntohs(84));
freeaddrinfo(servinfo);
// test numeric address (ipv4 address specified as ipv6 without AI_V4MAPPED)
memset(&hints, 0, sizeof(hints));
hints.ai_family = AF_INET6;
hints.ai_socktype = SOCK_STREAM;
err = getaddrinfo("1.2.3.4", "85", &hints, &servinfo);
#ifdef __linux__
assert(err == -9 /* EAI_ADDRFAMILY */);
#else
assert(err == EAI_NONAME);
#endif
// test numeric address (ipv6)
memset(&hints, 0, sizeof(hints));
hints.ai_family = AF_INET6;
hints.ai_socktype = SOCK_DGRAM;
err = getaddrinfo("2001:0db8:85a3:0042:1000:8a2e:0370:7334", "86", &hints, &servinfo);
assert(!err);
sa6 = ((struct sockaddr_in6*)servinfo->ai_addr);
assert(servinfo->ai_family == AF_INET6);
assert(servinfo->ai_socktype == SOCK_DGRAM);
assert(*((uint32_t*)&(sa6->sin6_addr)+0) == -1207107296);
assert(*((uint32_t*)&(sa6->sin6_addr)+1) == 1107338117);
assert(*((uint32_t*)&(sa6->sin6_addr)+2) == 780795920);
assert(*((uint32_t*)&(sa6->sin6_addr)+3) == 879980547);
assert(sa6->sin6_port == ntohs(86));
freeaddrinfo(servinfo);
// test numeric address (ipv6 address specified as ipv4)
memset(&hints, 0, sizeof(hints));
hints.ai_family = AF_INET;
hints.ai_socktype = SOCK_STREAM;
err = getaddrinfo("2001:0db8:85a3:0042:1000:8a2e:0370:7334", "87", &hints, &servinfo);
#ifdef __linux__
assert(err == -9 /* EAI_ADDRFAMILY */);
#else
assert(err == EAI_NONAME);
#endif
// test non-numeric host with AI_NUMERICHOST
memset(&hints, 0, sizeof(hints));
hints.ai_flags = AI_NUMERICHOST;
hints.ai_family = AF_INET;
hints.ai_socktype = SOCK_STREAM;
err = getaddrinfo("www.mozilla.org", "88", &hints, &servinfo);
assert(err == EAI_NONAME);
// test non-numeric host with AF_INET
memset(&hints, 0, sizeof(hints));
hints.ai_family = AF_INET;
hints.ai_socktype = SOCK_STREAM;
err = getaddrinfo("www.mozilla.org", "89", &hints, &servinfo);
assert(!err);
sa4 = ((struct sockaddr_in*)servinfo->ai_addr);
assert(servinfo->ai_family == AF_INET);
assert(servinfo->ai_socktype == SOCK_STREAM);
assert(sa4->sin_port == ntohs(89));
freeaddrinfo(servinfo);
// test non-numeric host with AF_INET6
memset(&hints, 0, sizeof(hints));
hints.ai_family = AF_INET6;
hints.ai_socktype = SOCK_STREAM;
err = getaddrinfo("www.mozilla.org", "90", &hints, &servinfo);
assert(!err);
sa6 = ((struct sockaddr_in6*)servinfo->ai_addr);
assert(servinfo->ai_family == AF_INET6);
assert(servinfo->ai_socktype == SOCK_STREAM);
assert(*((uint32_t*)&(sa6->sin6_addr)+0) != 0 ||
*((uint32_t*)&(sa6->sin6_addr)+1) != 0 ||
*((uint32_t*)&(sa6->sin6_addr)+2) != 0 ||
*((uint32_t*)&(sa6->sin6_addr)+3) != 0);
assert(sa6->sin6_port == ntohs(90));
freeaddrinfo(servinfo);
// test with NULL hints
// Specifying hints as NULL is equivalent to setting ai_socktype and ai_protocol to 0;
// ai_family to AF_UNSPEC; and ai_flags to (AI_V4MAPPED | AI_ADDRCONFIG)
// N.B. with NULL hints getaddrinfo should really be passing back multiple addrinfo structures in a
// linked list with next values given in ai_next. The current implementation doesn't do that yet but the
// following tests have assert(servinfo->ai_next == NULL) so that they will fail when multiple values do
// eventually get implemented, so we know to improve the tests then to cope with multiple values.
// test numeric host
err = getaddrinfo("1.2.3.4", "85", NULL, &servinfo);
assert(!err);
sa4 = ((struct sockaddr_in*)servinfo->ai_addr);
assert(servinfo->ai_family == AF_INET);
assert(servinfo->ai_socktype == SOCK_STREAM);
assert(servinfo->ai_protocol == IPPROTO_TCP);
assert(sa4->sin_port == ntohs(85));
assert(servinfo->ai_next == NULL);
freeaddrinfo(servinfo);
// test non-numeric host
err = getaddrinfo("www.mozilla.org", "89", NULL, &servinfo);
assert(!err);
sa4 = ((struct sockaddr_in*)servinfo->ai_addr);
assert(servinfo->ai_family == AF_INET);
assert(servinfo->ai_socktype == SOCK_STREAM);
assert(servinfo->ai_protocol == IPPROTO_TCP);
assert(sa4->sin_port == ntohs(89));
assert(servinfo->ai_next == NULL);
freeaddrinfo(servinfo);
// test loopback resolution
err = getaddrinfo(NULL, "80", NULL, &servinfo);
assert(!err);
sa4 = ((struct sockaddr_in*)servinfo->ai_addr);
assert(servinfo->ai_family == AF_INET);
assert(servinfo->ai_socktype == SOCK_STREAM);
assert(servinfo->ai_protocol == IPPROTO_TCP);
assert(sa4->sin_port == ntohs(80));
assert(servinfo->ai_next == NULL);
freeaddrinfo(servinfo);
// test gai_strerror
assert(strncmp(gai_strerror(0), "Success", 256) == 0);
assert(strncmp(gai_strerror(EAI_BADFLAGS), "Invalid value for 'ai_flags' field", 256) == 0);
assert(strncmp(gai_strerror(EAI_NONAME), "NAME or SERVICE is unknown", 256) == 0);
assert(strncmp(gai_strerror(EAI_AGAIN), "Temporary failure in name resolution", 256) == 0);
assert(strncmp(gai_strerror(EAI_FAIL), "Non-recoverable failure in name res", 256) == 0);
assert(strncmp(gai_strerror(EAI_FAMILY), "'ai_family' not supported", 256) == 0);
assert(strncmp(gai_strerror(EAI_SOCKTYPE), "'ai_socktype' not supported", 256) == 0);
assert(strncmp(gai_strerror(EAI_SERVICE), "SERVICE not supported for 'ai_socktype'", 256) == 0);
assert(strncmp(gai_strerror(EAI_MEMORY), "Memory allocation failure", 256) == 0);
assert(strncmp(gai_strerror(EAI_SYSTEM), "System error returned in 'errno'", 256) == 0);
assert(strncmp(gai_strerror(EAI_OVERFLOW), "Argument buffer overflow", 256) == 0);
assert(strncmp(gai_strerror(-5), "Unknown error", 256) == 0);
assert(strncmp(gai_strerror(-9), "Unknown error", 256) == 0);
assert(strncmp(gai_strerror(-13), "Unknown error", 256) == 0);
assert(strncmp(gai_strerror(-100), "Unknown error", 256) == 0);
puts("success");
return EXIT_SUCCESS;
}
|
