1
2 /* Copyright 1998 by the Massachusetts Institute of Technology.
3 * Copyright 2005 Dominick Meglio
4 * Copyright (C) 2019 by Andrew Selivanov
5 *
6 * Permission to use, copy, modify, and distribute this
7 * software and its documentation for any purpose and without
8 * fee is hereby granted, provided that the above copyright
9 * notice appear in all copies and that both that copyright
10 * notice and this permission notice appear in supporting
11 * documentation, and that the name of M.I.T. not be used in
12 * advertising or publicity pertaining to distribution of the
13 * software without specific, written prior permission.
14 * M.I.T. makes no representations about the suitability of
15 * this software for any purpose. It is provided "as is"
16 * without express or implied warranty.
17 */
18
19 #include "ares_setup.h"
20
21 #ifdef HAVE_NETINET_IN_H
22 # include <netinet/in.h>
23 #endif
24 #ifdef HAVE_NETDB_H
25 # include <netdb.h>
26 #endif
27 #ifdef HAVE_ARPA_INET_H
28 # include <arpa/inet.h>
29 #endif
30
31 #include "ares_nameser.h"
32
33 #ifdef HAVE_STRINGS_H
34 # include <strings.h>
35 #endif
36
37 #ifdef HAVE_LIMITS_H
38 # include <limits.h>
39 #endif
40
41 #include "ares.h"
42 #include "ares_dns.h"
43 #include "ares_inet_net_pton.h"
44 #include "ares_private.h"
45
ares_parse_aaaa_reply(const unsigned char * abuf,int alen,struct hostent ** host,struct ares_addr6ttl * addrttls,int * naddrttls)46 int ares_parse_aaaa_reply(const unsigned char *abuf, int alen,
47 struct hostent **host, struct ares_addr6ttl *addrttls,
48 int *naddrttls)
49 {
50 struct ares_addrinfo ai;
51 char *question_hostname = NULL;
52 int status;
53 int req_naddrttls = 0;
54
55 if (naddrttls)
56 {
57 req_naddrttls = *naddrttls;
58 *naddrttls = 0;
59 }
60
61 memset(&ai, 0, sizeof(ai));
62
63 status = ares__parse_into_addrinfo(abuf, alen, 0, 0, &ai);
64 if (status != ARES_SUCCESS && status != ARES_ENODATA)
65 {
66 goto fail;
67 }
68
69 if (host != NULL)
70 {
71 status = ares__addrinfo2hostent(&ai, AF_INET6, host);
72 if (status != ARES_SUCCESS && status != ARES_ENODATA)
73 {
74 goto fail;
75 }
76 }
77
78 if (addrttls != NULL && req_naddrttls)
79 {
80 ares__addrinfo2addrttl(&ai, AF_INET6, req_naddrttls, NULL,
81 addrttls, naddrttls);
82 }
83
84 fail:
85 ares__freeaddrinfo_cnames(ai.cnames);
86 ares__freeaddrinfo_nodes(ai.nodes);
87 ares_free(question_hostname);
88 ares_free(ai.name);
89
90 return status;
91 }
92
93