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
|
#include <stdio.h>
#include <assert.h>
#include <getdns_core_only.h>
int main()
{
getdns_return_t r; /* Holder for all function returns */
getdns_context *context = NULL;
getdns_dict *response = NULL;
getdns_dict *extensions = NULL;
getdns_bindata *address_data;
char *first = NULL, *second = NULL;
/* Create the DNS context for this call */
if ((r = getdns_context_create(&context, 1)))
fprintf(stderr, "Trying to create the context failed");
else if (!(extensions = getdns_dict_create()))
fprintf(stderr, "Could not create extensions dict.\n");
else if ((r = getdns_dict_set_int(extensions, "return_both_v4_and_v6", GETDNS_EXTENSION_TRUE)))
fprintf(stderr, "Trying to set an extension do both IPv4 and IPv6 failed");
else if ((r = getdns_general_sync(context, "example.com", GETDNS_RRTYPE_A, extensions, &response)))
fprintf(stderr, "Error scheduling synchronous request");
else if ((r = getdns_dict_get_bindata(response, "/just_address_answers/0/address_data", &address_data)))
fprintf(stderr, "Could not get first address");
else if (!(first = getdns_display_ip_address(address_data)))
fprintf(stderr, "Could not convert first address to string\n");
else if ((r = getdns_dict_get_bindata(response, "/just_address_answers/1/address_data", &address_data)))
fprintf(stderr, "Could not get second address");
else if (!(second = getdns_display_ip_address(address_data)))
fprintf(stderr, "Could not convert second address to string\n");
if (first) {
printf("The address is %s\n", first);
free(first);
}
if (second) {
printf("The address is %s\n", second);
free(second);
}
/* Clean up */
if (response)
getdns_dict_destroy(response);
if (extensions)
getdns_dict_destroy(extensions);
if (context)
getdns_context_destroy(context);
if (r) {
assert( r != GETDNS_RETURN_GOOD );
fprintf(stderr, ": %d\n", r);
exit(EXIT_FAILURE);
}
/* Assuming we get here, leave gracefully */
exit(EXIT_SUCCESS);
}
|
