1#include <stdbool.h>
2#include <stdio.h>
3#include <ifaddrs.h>
4#include <stdint.h>
5
6/* Internal definitions used in the libc code. */
7#define __getservbyname_r getservbyname_r
8#define __socket socket
9#define __getsockname getsockname
10#define __inet_aton inet_aton
11#define __gethostbyaddr_r gethostbyaddr_r
12#define __gethostbyname2_r gethostbyname2_r
13#define __qsort_r qsort_r
14#define __stat64 stat64
15
16void
17attribute_hidden
18__check_pf (bool *p1, bool *p2, struct in6addrinfo **in6ai, size_t *in6ailen)
19{
20 *p1 = *p2 = true;
21 *in6ai = NULL;
22 *in6ailen = 0;
23}
24
25void
26attribute_hidden
27__free_in6ai (struct in6addrinfo *ai)
28{
29}
30
31void
32attribute_hidden
33__check_native (uint32_t a1_index, int *a1_native,
34 uint32_t a2_index, int *a2_native)
35{
36}
37
38int
39attribute_hidden
40__idna_to_ascii_lz (const char *input, char **output, int flags)
41{
42 return 0;
43}
44
45int
46attribute_hidden
47__idna_to_unicode_lzlz (const char *input, char **output, int flags)
48{
49 *output = NULL;
50 return 0;
51}
52
53void
54attribute_hidden
55_res_hconf_init (void)
56{
57}
58
59#undef USE_NSCD
60#include "../sysdeps/posix/getaddrinfo.c"
61
62nss_action_list __nss_hosts_database attribute_hidden;
63
64/* This is the beginning of the real test code. The above defines
65 (among other things) the function rfc3484_sort. */
66
67
68#if __BYTE_ORDER == __BIG_ENDIAN
69# define h(n) n
70#else
71# define h(n) __bswap_constant_32 (n)
72#endif
73
74struct sockaddr_in addrs[] =
75{
76 { .sin_family = AF_INET, .sin_addr = { h (0x0aa85f19) } },
77 { .sin_family = AF_INET, .sin_addr = { h (0xac105f19) } },
78 { .sin_family = AF_INET, .sin_addr = { h (0xc0000219) } },
79 { .sin_family = AF_INET, .sin_addr = { h (0xc0a86d1d) } },
80 { .sin_family = AF_INET, .sin_addr = { h (0xc0a85d03) } },
81 { .sin_family = AF_INET, .sin_addr = { h (0xc0a82c3d) } },
82 { .sin_family = AF_INET, .sin_addr = { h (0xc0a86002) } },
83 { .sin_family = AF_INET, .sin_addr = { h (0xc0a802f3) } },
84 { .sin_family = AF_INET, .sin_addr = { h (0xc0a80810) } },
85 { .sin_family = AF_INET, .sin_addr = { h (0xc0a85e02) } }
86};
87#define naddrs (sizeof (addrs) / sizeof (addrs[0]))
88static struct addrinfo ais[naddrs];
89static struct sort_result results[naddrs];
90static size_t order[naddrs];
91
92static int expected[naddrs] =
93 {
94 9, 4, 3, 6, 5, 7, 8, 2, 0, 1
95 };
96
97
98ssize_t
99__getline (char **lineptr, size_t *n, FILE *s)
100{
101 *lineptr = NULL;
102 *n = 0;
103 return 0;
104}
105
106
107static int
108do_test (void)
109{
110 labels = default_labels;
111 precedence = default_precedence;
112 scopes= default_scopes;
113
114 struct sockaddr_in so;
115 so.sin_family = AF_INET;
116 so.sin_addr.s_addr = h (0xc0a85f19);
117 /* Clear the rest of the structure to avoid warnings. */
118 memset (so.sin_zero, '\0', sizeof (so.sin_zero));
119
120 for (int i = 0; i < naddrs; ++i)
121 {
122 ais[i].ai_family = AF_INET;
123 ais[i].ai_addr = (struct sockaddr *) &addrs[i];
124 results[i].dest_addr = &ais[i];
125 results[i].got_source_addr = true;
126 memcpy(&results[i].source_addr, &so, sizeof (so));
127 results[i].source_addr_len = sizeof (so);
128 results[i].source_addr_flags = 0;
129 results[i].prefixlen = 8;
130 results[i].index = 0;
131
132 order[i] = i;
133 }
134
135 struct sort_result_combo combo = { .results = results, .nresults = naddrs };
136 qsort_r (order, naddrs, sizeof (order[0]), rfc3484_sort, &combo);
137
138 int result = 0;
139 for (int i = 0; i < naddrs; ++i)
140 {
141 struct in_addr addr = ((struct sockaddr_in *) (results[order[i]].dest_addr->ai_addr))->sin_addr;
142
143 int here = memcmp (&addr, &addrs[expected[i]].sin_addr,
144 sizeof (struct in_addr));
145 printf (format: "[%d] = %s: %s\n", i, inet_ntoa (in: addr), here ? "FAIL" : "OK");
146 result |= here;
147 }
148
149 return result;
150}
151
152#define TEST_FUNCTION do_test ()
153#include "../test-skeleton.c"
154

source code of glibc/posix/tst-rfc3484.c