2 /* Copyright (C) 2009-2010 by Daniel Stenberg
4 * Permission to use, copy, modify, and distribute this
5 * software and its documentation for any purpose and without
6 * fee is hereby granted, provided that the above copyright
7 * notice appear in all copies and that both that copyright
8 * notice and this permission notice appear in supporting
9 * documentation, and that the name of M.I.T. not be used in
10 * advertising or publicity pertaining to distribution of the
11 * software without specific, written prior permission.
12 * M.I.T. makes no representations about the suitability of
13 * this software for any purpose. It is provided "as is"
14 * without express or implied warranty.
18 ARES_DATATYPE_UNKNOWN = 1, /* unknown data type - introduced in 1.7.0 */
19 ARES_DATATYPE_SRV_REPLY, /* struct ares_srv_reply - introduced in 1.7.0 */
20 ARES_DATATYPE_TXT_REPLY, /* struct ares_txt_reply - introduced in 1.7.0 */
21 ARES_DATATYPE_ADDR_NODE, /* struct ares_addr_node - introduced in 1.7.1 */
22 ARES_DATATYPE_MX_REPLY, /* struct ares_mx_reply - introduced in 1.7.2 */
24 ARES_DATATYPE_ADDR6TTL, /* struct ares_addrttl */
25 ARES_DATATYPE_ADDRTTL, /* struct ares_addr6ttl */
26 ARES_DATATYPE_HOSTENT, /* struct hostent */
27 ARES_DATATYPE_OPTIONS, /* struct ares_options */
29 ARES_DATATYPE_LAST /* not used - introduced in 1.7.0 */
32 #define ARES_DATATYPE_MARK 0xbead
35 * ares_data struct definition is internal to c-ares and shall not
36 * be exposed by the public API in order to allow future changes
37 * and extensions to it without breaking ABI. This will be used
38 * internally by c-ares as the container of multiple types of data
39 * dynamically allocated for which a reference will be returned
40 * to the calling application.
42 * c-ares API functions returning a pointer to c-ares internally
43 * allocated data will actually be returning an interior pointer
44 * into this ares_data struct.
46 * All this is 'invisible' to the calling application, the only
47 * requirement is that this kind of data must be free'ed by the
48 * calling application using ares_free_data() with the pointer
49 * it has received from a previous c-ares function call.
53 ares_datatype type; /* Actual data type identifier. */
54 unsigned int mark; /* Private ares_data signature. */
56 struct ares_txt_reply txt_reply;
57 struct ares_srv_reply srv_reply;
58 struct ares_addr_node addr_node;
59 struct ares_mx_reply mx_reply;
63 void *ares_malloc_data(ares_datatype type);
65 ares_datatype ares_get_datatype(void * dataptr);