1/*
2 * Copyright (c) 1983, 1987, 1989
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 4. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30/*
31 * Portions Copyright (c) 1996-1999 by Internet Software Consortium.
32 *
33 * Permission to use, copy, modify, and distribute this software for any
34 * purpose with or without fee is hereby granted, provided that the above
35 * copyright notice and this permission notice appear in all copies.
36 *
37 * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
38 * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
39 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
40 * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
41 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
42 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
43 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
44 * SOFTWARE.
45 */
46
47/*
48 * @(#)resolv.h 8.1 (Berkeley) 6/2/93
49 * $BINDId: resolv.h,v 8.31 2000/03/30 20:16:50 vixie Exp $
50 */
51
52#ifndef _RESOLV_H_
53#define _RESOLV_H_
54
55#include <sys/cdefs.h>
56#include <sys/param.h>
57#include <sys/types.h>
58#include <stdio.h>
59#include <netinet/in.h>
60#include <arpa/nameser.h>
61#include <bits/types/res_state.h>
62
63/*
64 * Global defines and variables for resolver stub.
65 */
66#define LOCALDOMAINPARTS 2 /* min levels in name that is "local" */
67
68#define RES_TIMEOUT 5 /* min. seconds between retries */
69#define RES_MAXNDOTS 15 /* should reflect bit field size */
70#define RES_MAXRETRANS 30 /* only for resolv.conf/RES_OPTIONS */
71#define RES_MAXRETRY 5 /* only for resolv.conf/RES_OPTIONS */
72#define RES_DFLRETRY 2 /* Default #/tries. */
73#define RES_MAXTIME 65535 /* Infinity, in milliseconds. */
74
75#define nsaddr nsaddr_list[0] /* for backward compatibility */
76
77/*
78 * Revision information. This is the release date in YYYYMMDD format.
79 * It can change every day so the right thing to do with it is use it
80 * in preprocessor commands such as "#if (__RES > 19931104)". Do not
81 * compare for equality; rather, use it to determine whether your resolver
82 * is new enough to contain a certain feature.
83 */
84
85#define __RES 19991006
86
87/*
88 * Resolver configuration file.
89 * Normally not present, but may contain the address of the
90 * inital name server(s) to query and the domain search list.
91 */
92
93#ifndef _PATH_RESCONF
94#define _PATH_RESCONF "/etc/resolv.conf"
95#endif
96
97struct res_sym {
98 int number; /* Identifying number, like T_MX */
99 char * name; /* Its symbolic name, like "MX" */
100 char * humanname; /* Its fun name, like "mail exchanger" */
101};
102
103/*
104 * Resolver options (keep these in synch with res_debug.c, please)
105 */
106#define RES_INIT 0x00000001 /* address initialized */
107#define RES_DEBUG 0x00000002 /* print debug messages */
108#define RES_AAONLY \
109 __glibc_macro_warning ("RES_AAONLY is deprecated") 0x00000004
110#define RES_USEVC 0x00000008 /* use virtual circuit */
111#define RES_PRIMARY \
112 __glibc_macro_warning ("RES_PRIMARY is deprecated") 0x00000010
113#define RES_IGNTC 0x00000020 /* ignore trucation errors */
114#define RES_RECURSE 0x00000040 /* recursion desired */
115#define RES_DEFNAMES 0x00000080 /* use default domain name */
116#define RES_STAYOPEN 0x00000100 /* Keep TCP socket open */
117#define RES_DNSRCH 0x00000200 /* search up local domain tree */
118#define RES_NOALIASES 0x00001000 /* shuts off HOSTALIASES feature */
119#define RES_ROTATE 0x00004000 /* rotate ns list after each query */
120#define RES_NOCHECKNAME \
121 __glibc_macro_warning ("RES_NOCHECKNAME is deprecated") 0x00008000
122#define RES_KEEPTSIG \
123 __glibc_macro_warning ("RES_KEEPTSIG is deprecated") 0x00010000
124#define RES_BLAST \
125 __glibc_macro_warning ("RES_BLAST is deprecated") 0x00020000
126#define RES_USE_EDNS0 0x00100000 /* Use EDNS0. */
127#define RES_SNGLKUP 0x00200000 /* one outstanding request at a time */
128#define RES_SNGLKUPREOP 0x00400000 /* -"-, but open new socket for each
129 request */
130#define RES_USE_DNSSEC 0x00800000 /* use DNSSEC using OK bit in OPT */
131#define RES_NOTLDQUERY 0x01000000 /* Do not look up unqualified name
132 as a TLD. */
133#define RES_NORELOAD 0x02000000 /* No automatic configuration reload. */
134#define RES_TRUSTAD 0x04000000 /* Request AD bit, keep it in responses. */
135
136#define RES_DEFAULT (RES_RECURSE|RES_DEFNAMES|RES_DNSRCH)
137
138/*
139 * Resolver "pfcode" values. Used by dig.
140 */
141#define RES_PRF_STATS 0x00000001
142#define RES_PRF_UPDATE 0x00000002
143#define RES_PRF_CLASS 0x00000004
144#define RES_PRF_CMD 0x00000008
145#define RES_PRF_QUES 0x00000010
146#define RES_PRF_ANS 0x00000020
147#define RES_PRF_AUTH 0x00000040
148#define RES_PRF_ADD 0x00000080
149#define RES_PRF_HEAD1 0x00000100
150#define RES_PRF_HEAD2 0x00000200
151#define RES_PRF_TTLID 0x00000400
152#define RES_PRF_HEADX 0x00000800
153#define RES_PRF_QUERY 0x00001000
154#define RES_PRF_REPLY 0x00002000
155#define RES_PRF_INIT 0x00004000
156/* 0x00008000 */
157
158/* Things involving an internal (static) resolver context. */
159__BEGIN_DECLS
160extern struct __res_state *__res_state(void) __attribute__ ((__const__));
161__END_DECLS
162#define _res (*__res_state())
163
164#define fp_nquery __fp_nquery
165#define fp_query __fp_query
166#define hostalias __hostalias
167#define p_query __p_query
168#define res_close __res_close
169#define res_init __res_init
170#define res_isourserver __res_isourserver
171
172#ifdef _LIBC
173# define __RESOLV_DEPRECATED
174# define __RESOLV_DEPRECATED_MSG(msg)
175#else
176# define __RESOLV_DEPRECATED __attribute_deprecated__
177# define __RESOLV_DEPRECATED_MSG(msg) __attribute_deprecated_msg__ (msg)
178#endif
179
180__BEGIN_DECLS
181void fp_nquery (const unsigned char *, int, FILE *) __THROW
182 __RESOLV_DEPRECATED;
183void fp_query (const unsigned char *, FILE *) __THROW
184 __RESOLV_DEPRECATED;
185const char * hostalias (const char *) __THROW
186 __RESOLV_DEPRECATED_MSG ("use getaddrinfo instead");
187void p_query (const unsigned char *) __THROW
188 __RESOLV_DEPRECATED;
189void res_close (void) __THROW;
190int res_init (void) __THROW;
191int res_isourserver (const struct sockaddr_in *) __THROW
192 __RESOLV_DEPRECATED;
193int res_mkquery (int, const char *, int, int,
194 const unsigned char *, int, const unsigned char *,
195 unsigned char *, int) __THROW;
196int res_query (const char *, int, int, unsigned char *, int)
197 __THROW;
198int res_querydomain (const char *, const char *, int, int,
199 unsigned char *, int) __THROW;
200int res_search (const char *, int, int, unsigned char *, int)
201 __THROW;
202int res_send (const unsigned char *, int, unsigned char *, int)
203 __THROW;
204__END_DECLS
205
206#define b64_ntop __b64_ntop
207#define b64_pton __b64_pton
208#define dn_count_labels __dn_count_labels
209#define fp_resstat __fp_resstat
210#define loc_aton __loc_aton
211#define loc_ntoa __loc_ntoa
212#define p_cdname __p_cdname
213#define p_cdnname __p_cdnname
214#define p_class __p_class
215#define p_fqname __p_fqname
216#define p_fqnname __p_fqnname
217#define p_option __p_option
218#define p_time __p_time
219#define p_type __p_type
220#define p_rcode __p_rcode
221#define putlong __putlong
222#define putshort __putshort
223#define res_hostalias __res_hostalias
224#define res_nameinquery __res_nameinquery
225#define res_nclose __res_nclose
226#define res_ninit __res_ninit
227#define res_queriesmatch __res_queriesmatch
228#define res_randomid __res_randomid
229#define sym_ntop __sym_ntop
230#define sym_ntos __sym_ntos
231#define sym_ston __sym_ston
232__BEGIN_DECLS
233int res_hnok (const char *) __THROW;
234int res_ownok (const char *) __THROW;
235int res_mailok (const char *) __THROW;
236int res_dnok (const char *) __THROW;
237int sym_ston (const struct res_sym *, const char *, int *) __THROW
238 __RESOLV_DEPRECATED;
239const char * sym_ntos (const struct res_sym *, int, int *) __THROW
240 __RESOLV_DEPRECATED;
241const char * sym_ntop (const struct res_sym *, int, int *) __THROW
242 __RESOLV_DEPRECATED;
243int b64_ntop (const unsigned char *, size_t, char *, size_t)
244 __THROW;
245int b64_pton (char const *, unsigned char *, size_t) __THROW;
246int loc_aton (const char *__ascii, unsigned char *__binary) __THROW
247 __RESOLV_DEPRECATED;
248const char * loc_ntoa (const unsigned char *__binary, char *__ascii) __THROW
249 __RESOLV_DEPRECATED;
250int dn_skipname (const unsigned char *, const unsigned char *)
251 __THROW;
252void putlong (uint32_t, unsigned char *) __THROW
253 __RESOLV_DEPRECATED_MSG ("use NS_PUT16 instead");
254void putshort (uint16_t, unsigned char *) __THROW
255 __RESOLV_DEPRECATED_MSG ("use NS_PUT32 instead");
256const char * p_class (int) __THROW __RESOLV_DEPRECATED;
257const char * p_time (uint32_t) __THROW __RESOLV_DEPRECATED;
258const char * p_type (int) __THROW __RESOLV_DEPRECATED;
259const char * p_rcode (int) __THROW __RESOLV_DEPRECATED;
260const unsigned char * p_cdnname (const unsigned char *, const unsigned char *,
261 int, FILE *) __THROW __RESOLV_DEPRECATED;
262const unsigned char * p_cdname (const unsigned char *, const unsigned char *,
263 FILE *) __THROW __RESOLV_DEPRECATED;
264const unsigned char * p_fqnname (const unsigned char *__cp,
265 const unsigned char *__msg,
266 int, char *, int) __THROW __RESOLV_DEPRECATED;
267const unsigned char * p_fqname (const unsigned char *, const unsigned char *,
268 FILE *) __THROW __RESOLV_DEPRECATED;
269const char * p_option (unsigned long __option) __THROW __RESOLV_DEPRECATED;
270int dn_count_labels (const char *) __THROW __RESOLV_DEPRECATED;
271int dn_comp (const char *, unsigned char *, int, unsigned char **,
272 unsigned char **) __THROW;
273int dn_expand (const unsigned char *, const unsigned char *,
274 const unsigned char *, char *, int) __THROW;
275unsigned int res_randomid (void) __THROW
276 __RESOLV_DEPRECATED_MSG ("use getentropy instead");
277int res_nameinquery (const char *, int, int,
278 const unsigned char *,
279 const unsigned char *) __THROW
280 __RESOLV_DEPRECATED;
281int res_queriesmatch (const unsigned char *,
282 const unsigned char *,
283 const unsigned char *,
284 const unsigned char *) __THROW
285 __RESOLV_DEPRECATED;
286/* Things involving a resolver context. */
287int res_ninit (res_state) __THROW;
288void fp_resstat (const res_state, FILE *) __THROW
289 __RESOLV_DEPRECATED;
290const char * res_hostalias (const res_state, const char *, char *, size_t)
291 __THROW __RESOLV_DEPRECATED_MSG ("use getaddrinfo instead");
292int res_nquery (res_state, const char *, int, int,
293 unsigned char *, int) __THROW;
294int res_nsearch (res_state, const char *, int, int,
295 unsigned char *, int) __THROW;
296int res_nquerydomain (res_state, const char *, const char *, int,
297 int, unsigned char *, int) __THROW;
298int res_nmkquery (res_state, int, const char *, int, int,
299 const unsigned char *, int,
300 const unsigned char *, unsigned char *, int)
301 __THROW;
302int res_nsend (res_state, const unsigned char *, int,
303 unsigned char *, int) __THROW;
304void res_nclose (res_state) __THROW;
305
306__END_DECLS
307
308#endif /* !_RESOLV_H_ */
309