source: trunk/src/emx/include/resolv.h@ 1064

Last change on this file since 1064 was 354, checked in by bird, 22 years ago

#434: no function redefinitions. TCPCALL not _System.
  • Property cvs2svn:cvs-rev set to 1.4
  • Property svn:eol-style set to native
  • Property svn:executable set to *
File size: 12.8 KB
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1/* Modified for EMX by hv 1994,1996
2 * Modified for gcc by bird 2003
3 *
4 * Copyright (c) 1983, 1987, 1989 The Regents of the University of California.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 * must display the following acknowledgement:
17 * This product includes software developed by the University of
18 * California, Berkeley and its contributors.
19 * 4. Neither the name of the University nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 *
35 * from: @(#)resolv.h 5.15 (Berkeley) 4/3/91
36 * resolv.h,v 1.4 2003/07/11 11:39:47 bird Exp
37 */
38
39#ifndef _RESOLV_H_
40#define _RESOLV_H_
41
42
43#if defined (__cplusplus)
44extern "C" {
45#endif
46
47/* toolkit includes a bunch of headers */
48#ifndef TCPV40HDRS
49#include <sys/param.h>
50#include <types.h>
51#include <sys/cdefs.h>
52#include <stdio.h>
53
54
55/*
56 * Revision information. This is the release date in YYYYMMDD format.
57 * It can change every day so the right thing to do with it is use it
58 * in preprocessor commands such as "#if (__RES > 19931104)". Do not
59 * compare for equality; rather, use it to determine whether your resolver
60 * is new enough to contain a certain feature.
61 */
62
63#define __RES 19960801
64
65/*
66 * Resolver configuration file.
67 * Normally not present, but may contain the address of the
68 * inital name server(s) to query and the domain search list.
69 */
70
71#ifndef _PATH_RESCONF
72#define _PATH_RESCONF "/mptn/etc/resolv.conf"
73#endif
74#endif /* TCPV40HDRS */
75
76/*
77 * Global defines and variables for resolver stub.
78 */
79#define MAXNS 3 /* max # name servers we'll track */
80#define MAXDFLSRCH 3 /* # default domain levels to try */
81#define LOCALDOMAINPARTS 2 /* min levels in name that is "local" */
82#define RES_TIMEOUT 4 /* min. seconds between retries */
83#ifdef TCPV40HDRS
84#define MAXDNSRCH 3 /* max # domains in search path */
85#else
86#define MAXDNSRCH 6 /* max # domains in search path */
87#define MAXRESOLVSORT 10 /* number of net to sort on */
88#define RES_MAXNDOTS 15 /* should reflect bit field size */
89#endif
90
91
92#ifdef TCPV40HDRS
93
94#pragma pack(4)
95struct state {
96 int retrans; /* retransmition time interval */
97 int retry; /* number of times to retransmit */
98 long options; /* option flags - see below. */
99 int nscount; /* number of name servers */
100 struct sockaddr_in nsaddr_list[MAXNS]; /* address of name server */
101#define nsaddr nsaddr_list[0] /* for backward compatibility */
102 u_short id; /* current packet id */
103 char defdname[MAXDNAME]; /* default domain */
104 char *dnsrch[MAXDNSRCH+1]; /* components of domain to search */
105};
106#pragma pack()
107
108#else
109
110#pragma pack(4)
111struct __res_state {
112 int retrans; /* retransmition time interval */
113 int retry; /* number of times to retransmit */
114 u_long options; /* option flags - see below. */
115 int nscount; /* number of name servers */
116 struct sockaddr_in
117 nsaddr_list[MAXNS]; /* address of name server */
118#define nsaddr nsaddr_list[0] /* for backward compatibility */
119 u_short id; /* current message id */
120 char defdname[256]; /* default domain (deprecated) */
121 char *dnsrch[MAXDNSRCH+1]; /* components of domain to search */
122 u_long pfcode; /* RES_PRF_ flags - see below. */
123 unsigned ndots:4; /* threshold for initial abs. query */
124 unsigned nsort:4; /* number of elements in sort_list[] */
125 char unused[3];
126 struct {
127 struct in_addr addr;
128 u_int32_t mask;
129 } sort_list[MAXRESOLVSORT];
130 char pad[72]; /* on an i386 this means 512b total */
131};
132#pragma pack()
133
134#endif
135
136/*
137 * Resolver options
138 */
139#define RES_INIT 0x0001 /* address initialized */
140#define RES_DEBUG 0x0002 /* print debug messages */
141#define RES_AAONLY 0x0004 /* authoritative answers only */
142#define RES_USEVC 0x0008 /* use virtual circuit */
143#define RES_PRIMARY 0x0010 /* query primary server only */
144#define RES_IGNTC 0x0020 /* ignore trucation errors */
145#define RES_RECURSE 0x0040 /* recursion desired */
146#define RES_DEFNAMES 0x0080 /* use default domain name */
147#define RES_STAYOPEN 0x0100 /* Keep TCP socket open */
148#define RES_DNSRCH 0x0200 /* search up local domain tree */
149#ifndef TCPV40HDRS
150#define RES_INSECURE1 0x00000400 /* type 1 security disabled */
151#define RES_INSECURE2 0x00000800 /* type 2 security disabled */
152#define RES_NOALIASES 0x00001000 /* shuts off HOSTALIASES feature */
153#define RES_USE_INET6 0x00002000 /* use/map IPv6 in gethostbyname() */
154#endif
155
156#define RES_DEFAULT (RES_RECURSE | RES_DEFNAMES | RES_DNSRCH)
157
158
159
160#ifdef TCPV40HDRS
161
162extern struct state _res;
163
164#else /* !TCPV40HDRS: */
165
166/*
167 * Resolver "pfcode" values. Used by dig.
168 */
169#define RES_PRF_STATS 0x00000001
170/* 0x00000002 */
171#define RES_PRF_CLASS 0x00000004
172#define RES_PRF_CMD 0x00000008
173#define RES_PRF_QUES 0x00000010
174#define RES_PRF_ANS 0x00000020
175#define RES_PRF_AUTH 0x00000040
176#define RES_PRF_ADD 0x00000080
177#define RES_PRF_HEAD1 0x00000100
178#define RES_PRF_HEAD2 0x00000200
179#define RES_PRF_TTLID 0x00000400
180#define RES_PRF_HEADX 0x00000800
181#define RES_PRF_QUERY 0x00001000
182#define RES_PRF_REPLY 0x00002000
183#define RES_PRF_INIT 0x00004000
184/* 0x00008000 */
185
186/* hooks are still experimental as of 4.9.2 */
187typedef enum { res_goahead, res_nextns, res_modified, res_done, res_error }
188 res_sendhookact;
189
190#ifndef TCPCALL
191#define TCPCALL _System
192#endif
193
194typedef res_sendhookact (* TCPCALL res_send_qhook)(struct sockaddr_in * const *ns,
195 const u_char **query,
196 int *querylen,
197 u_char *ans,
198 int anssiz,
199 int *resplen);
200
201typedef res_sendhookact (* TCPCALL res_send_rhook)(const struct sockaddr_in *ns,
202 const u_char *query,
203 int querylen,
204 u_char *ans,
205 int anssiz,
206 int *resplen);
207
208#pragma pack(4)
209struct res_sym {
210 int number; /* Identifying number, like T_MX */
211 char * name; /* Its symbolic name, like "MX" */
212 char * humanname; /* Its fun name, like "mail exchanger" */
213};
214#pragma pack()
215
216extern struct __res_state _ress[2];
217extern const struct res_sym __p_class_syms[];
218extern const struct res_sym __p_type_syms[];
219#define _res (_ress[0])
220
221/* Private routines shared between libc/net, named, nslookup and others. */
222#define res_hnok __res_hnok
223#define res_ownok __res_ownok
224#define res_mailok __res_mailok
225#define res_dnok __res_dnok
226#define sym_ston __sym_ston
227#define sym_ntos __sym_ntos
228#define sym_ntop __sym_ntop
229#define b64_ntop __b64_ntop
230#define b64_pton __b64_pton
231#define loc_ntoa __loc_ntoa
232#define loc_aton __loc_aton
233#define dn_skipname __dn_skipname
234#define fp_resstat __fp_resstat
235#define fp_query __fp_query
236#define fp_nquery __fp_nquery
237#define hostalias __hostalias
238#define putlong __putlong
239#define putshort __putshort
240#define p_class __p_class
241#define p_time __p_time
242#define p_type __p_type
243#define p_query __p_query
244#define p_cdnname __p_cdnname
245#define p_cdname __p_cdname
246#define p_fqnname __p_fqnname
247#define p_fqname __p_fqname
248#define p_rr __p_rr
249#define p_option __p_option
250#define p_secstodate __p_secstodate
251#define dn_count_labels __dn_count_labels
252#define dn_comp __dn_comp
253#define dn_expand __dn_expand
254#define res_init __res_init
255#define res_randomid __res_randomid
256#define res_query __res_query
257#define res_search __res_search
258#define res_querydomain __res_querydomain
259#define res_mkquery __res_mkquery
260#define res_send __res_send
261#define res_isourserver __res_isourserver
262#define res_nameinquery __res_nameinquery
263#define res_queriesmatch __res_queriesmatch
264#define res_close __res_close
265
266int TCPCALL res_hnok(const char *);
267int TCPCALL res_ownok(const char *);
268int TCPCALL res_mailok(const char *);
269int TCPCALL res_dnok(const char *);
270int TCPCALL sym_ston(const struct res_sym *, char *, int *);
271const char * TCPCALL sym_ntos(const struct res_sym *, int, int *);
272const char * TCPCALL sym_ntop(const struct res_sym *, int, int *);
273int TCPCALL b64_ntop(u_char const *, size_t, char *, size_t);
274int TCPCALL b64_pton(char const *, u_char *, size_t);
275int TCPCALL loc_aton(const char *, u_char *);
276const char * TCPCALL loc_ntoa(const u_char *, char *);
277int TCPCALL dn_skipname(const u_char *, const u_char *);
278void TCPCALL fp_resstat(struct __res_state *, int);
279void TCPCALL fp_query(const u_char *, int);
280void TCPCALL fp_nquery(const u_char *, int, int);
281const char * TCPCALL hostalias(const char *);
282void TCPCALL putlong(u_int32_t, u_char *);
283void TCPCALL putshort(u_int16_t, u_char *);
284const char * TCPCALL p_class(int);
285const char * TCPCALL p_time(u_int32_t);
286const char * TCPCALL p_type(int);
287void TCPCALL p_query(const u_char *);
288const u_char * TCPCALL p_cdnname(const u_char *, const u_char *, int, int);
289const u_char * TCPCALL p_cdname(const u_char *, const u_char *, int);
290const u_char * TCPCALL p_fqnname(const u_char *cp, const u_char *msg,
291 int, char *, int);
292const u_char * TCPCALL p_fqname(const u_char *, const u_char *, int);
293const u_char * TCPCALL p_rr(const u_char *, const u_char *, int);
294const char * TCPCALL p_option(u_long option);
295char * TCPCALL p_secstodate(u_long);
296int TCPCALL dn_count_labels(char *);
297int TCPCALL dn_comp(const char *, u_char *, int,
298 u_char **, u_char **);
299int TCPCALL dn_expand(const u_char *, const u_char *, const u_char *,
300 char *, int);
301int TCPCALL res_init(void);
302u_int TCPCALL res_randomid(void);
303int TCPCALL res_query(const char *, int, int, u_char *, int);
304int TCPCALL res_search(const char *, int, int, u_char *, int);
305int TCPCALL res_querydomain(const char *, const char *, int, int, u_char *, int);
306int TCPCALL res_mkquery(int, const char *, int, int, const u_char *, int,
307 const u_char *, u_char *, int);
308int TCPCALL res_send(const u_char *, int, u_char *, int);
309int TCPCALL res_isourserver(const struct sockaddr_in *);
310int TCPCALL res_nameinquery(const char *, int, int,
311 const u_char *, const u_char *);
312int TCPCALL res_queriesmatch(const u_char *, const u_char *,
313 const u_char *, const u_char *);
314void TCPCALL res_close(void);
315int TCPCALL dn_find(u_char *exp_dn, u_char *msg,
316 u_char **dnptrs, u_char **lastdnptr);
317#endif /* !TCPV40HDRS */
318
319
320#if defined (__cplusplus)
321}
322#endif
323
324#endif /* !_RESOLV_H_ */
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