source: autobuild/win32build/include/arpa/nameser.h @ 905

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1/*
2 * ++Copyright++ 1983, 1989, 1993
3 * -
4 * Copyright (c) 1983, 1989, 1993
5 *    The Regents of the University of California.  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 * Portions Copyright (c) 1993 by Digital Equipment Corporation.
36 *
37 * Permission to use, copy, modify, and distribute this software for any
38 * purpose with or without fee is hereby granted, provided that the above
39 * copyright notice and this permission notice appear in all copies, and that
40 * the name of Digital Equipment Corporation not be used in advertising or
41 * publicity pertaining to distribution of the document or software without
42 * specific, written prior permission.
43 *
44 * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
45 * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
46 * OF MERCHANTABILITY AND FITNESS.   IN NO EVENT SHALL DIGITAL EQUIPMENT
47 * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
48 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
49 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
50 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
51 * SOFTWARE.
52 * -
53 * Portions Copyright (c) 1995 by International Business Machines, Inc.
54 *
55 * International Business Machines, Inc. (hereinafter called IBM) grants
56 * permission under its copyrights to use, copy, modify, and distribute this
57 * Software with or without fee, provided that the above copyright notice and
58 * all paragraphs of this notice appear in all copies, and that the name of IBM
59 * not be used in connection with the marketing of any product incorporating
60 * the Software or modifications thereof, without specific, written prior
61 * permission.
62 *
63 * To the extent it has a right to do so, IBM grants an immunity from suit
64 * under its patents, if any, for the use, sale or manufacture of products to
65 * the extent that such products are used for performing Domain Name System
66 * dynamic updates in TCP/IP networks by means of the Software.  No immunity is
67 * granted for any product per se or for any other function of any product.
68 *
69 * THE SOFTWARE IS PROVIDED "AS IS", AND IBM DISCLAIMS ALL WARRANTIES,
70 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
71 * PARTICULAR PURPOSE.  IN NO EVENT SHALL IBM BE LIABLE FOR ANY SPECIAL,
72 * DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER ARISING
73 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE, EVEN
74 * IF IBM IS APPRISED OF THE POSSIBILITY OF SUCH DAMAGES.
75 * --Copyright--
76 */
77
78/*
79 *      @(#)nameser.h   8.1 (Berkeley) 6/2/93
80 *  $Id: nameser.h,v 8.11 1996/10/08 04:51:02 vixie Exp $
81 */
82
83#ifndef _NAMESER_H_
84#define _NAMESER_H_
85
86#ifndef WINNT
87#include <sys/param.h>
88#endif
89#if (!defined(BSD)) || (BSD < 199306)
90# include <sys/bitypes.h>
91#else
92# include <sys/types.h>
93#endif
94#include <sys/cdefs.h>
95
96#ifdef _AUX_SOURCE
97# include <sys/types.h>
98#endif
99
100/*
101 * revision information.  this is the release date in YYYYMMDD format.
102 * it can change every day so the right thing to do with it is use it
103 * in preprocessor commands such as "#if (__BIND > 19931104)".  do not
104 * compare for equality; rather, use it to determine whether your resolver
105 * is new enough to contain a certain feature.
106 */
107
108#define __BIND      19960801    /* interface version stamp */
109
110/*
111 * Define constants based on rfc883
112 */
113#define PACKETSZ    512     /* maximum packet size */
114#define MAXDNAME    1025        /* maximum presentation domain name */
115#define MAXCDNAME   255     /* maximum compressed domain name */
116#define MAXLABEL    63      /* maximum length of domain label */
117#define HFIXEDSZ    12      /* #/bytes of fixed data in header */
118#define QFIXEDSZ    4       /* #/bytes of fixed data in query */
119#define RRFIXEDSZ   10      /* #/bytes of fixed data in r record */
120#define INT32SZ     4       /* for systems without 32-bit ints */
121#define INT16SZ     2       /* for systems without 16-bit ints */
122#define INADDRSZ    4       /* IPv4 T_A */
123#define IN6ADDRSZ   16      /* IPv6 T_AAAA */
124
125/*
126 * Internet nameserver port number
127 */
128#define NAMESERVER_PORT 53
129
130/*
131 * Currently defined opcodes
132 */
133#define QUERY       0x0     /* standard query */
134#define IQUERY      0x1     /* inverse query */
135#define STATUS      0x2     /* nameserver status query */
136/*#define xxx       0x3*/       /* 0x3 reserved */
137#define NS_NOTIFY_OP    0x4     /* notify secondary of SOA change */
138/*
139 * Currently defined response codes
140 */
141#if !(defined(WINNT) && defined(NOERROR))
142#define NOERROR     0       /* no error */
143#endif
144#define FORMERR     1       /* format error */
145#define SERVFAIL    2       /* server failure */
146#define NXDOMAIN    3       /* non existent domain */
147#define NOTIMP      4       /* not implemented */
148#define REFUSED     5       /* query refused */
149
150/*
151 * Type values for resources and queries
152 */
153#define T_A     1       /* host address */
154#define T_NS        2       /* authoritative server */
155#define T_MD        3       /* mail destination */
156#define T_MF        4       /* mail forwarder */
157#define T_CNAME     5       /* canonical name */
158#define T_SOA       6       /* start of authority zone */
159#define T_MB        7       /* mailbox domain name */
160#define T_MG        8       /* mail group member */
161#define T_MR        9       /* mail rename name */
162#define T_NULL      10      /* null resource record */
163#define T_WKS       11      /* well known service */
164#define T_PTR       12      /* domain name pointer */
165#define T_HINFO     13      /* host information */
166#define T_MINFO     14      /* mailbox information */
167#define T_MX        15      /* mail routing information */
168#define T_TXT       16      /* text strings */
169#define T_RP        17      /* responsible person */
170#define T_AFSDB     18      /* AFS cell database */
171#define T_X25       19      /* X_25 calling address */
172#define T_ISDN      20      /* ISDN calling address */
173#define T_RT        21      /* router */
174#define T_NSAP      22      /* NSAP address */
175#define T_NSAP_PTR  23      /* reverse NSAP lookup (deprecated) */
176#define T_SIG       24      /* security signature */
177#define T_KEY       25      /* security key */
178#define T_PX        26      /* X.400 mail mapping */
179#define T_GPOS      27      /* geographical position (withdrawn) */
180#define T_AAAA      28      /* IP6 Address */
181#define T_LOC       29      /* Location Information */
182#define T_NXT       30      /* Next Valid Name in Zone */
183#define T_EID       31      /* Endpoint identifier */
184#define T_NIMLOC    32      /* Nimrod locator */
185#define T_SRV       33      /* Server selection */
186#define T_ATMA      34      /* ATM Address */
187#define T_NAPTR     35      /* Naming Authority PoinTeR */
188    /* non standard */
189#define T_UINFO     100     /* user (finger) information */
190#define T_UID       101     /* user ID */
191#define T_GID       102     /* group ID */
192#define T_UNSPEC    103     /* Unspecified format (binary data) */
193    /* Query type values which do not appear in resource records */
194#define T_IXFR      251     /* incremental zone transfer */
195#define T_AXFR      252     /* transfer zone of authority */
196#define T_MAILB     253     /* transfer mailbox records */
197#define T_MAILA     254     /* transfer mail agent records */
198#define T_ANY       255     /* wildcard match */
199
200/*
201 * Values for class field
202 */
203
204#define C_IN        1       /* the arpa internet */
205#define C_CHAOS     3       /* for chaos net (MIT) */
206#define C_HS        4       /* for Hesiod name server (MIT) (XXX) */
207    /* Query class values which do not appear in resource records */
208#define C_ANY       255     /* wildcard match */
209
210/*
211 * Flags field of the KEY RR rdata
212 */
213#define KEYFLAG_TYPEMASK    0xC000  /* Mask for "type" bits */
214#define KEYFLAG_TYPE_AUTH_CONF  0x0000  /* Key usable for both */
215#define KEYFLAG_TYPE_CONF_ONLY  0x8000  /* Key usable for confidentiality */
216#define KEYFLAG_TYPE_AUTH_ONLY  0x4000  /* Key usable for authentication */
217#define KEYFLAG_TYPE_NO_KEY 0xC000  /* No key usable for either; no key */
218/* The type bits can also be interpreted independently, as single bits: */
219#define KEYFLAG_NO_AUTH     0x8000  /* Key not usable for authentication */
220#define KEYFLAG_NO_CONF     0x4000  /* Key not usable for confidentiality */
221
222#define KEYFLAG_EXPERIMENTAL    0x2000  /* Security is *mandatory* if bit=0 */
223#define KEYFLAG_RESERVED3   0x1000  /* reserved - must be zero */
224#define KEYFLAG_RESERVED4   0x0800  /* reserved - must be zero */
225#define KEYFLAG_USERACCOUNT 0x0400  /* key is assoc. with a user acct */
226#define KEYFLAG_ENTITY      0x0200  /* key is assoc. with entity eg host */
227#define KEYFLAG_ZONEKEY     0x0100  /* key is zone key for the zone named */
228#define KEYFLAG_IPSEC       0x0080  /* key is for IPSEC use (host or user)*/
229#define KEYFLAG_EMAIL       0x0040  /* key is for email (MIME security) */
230#define KEYFLAG_RESERVED10  0x0020  /* reserved - must be zero */
231#define KEYFLAG_RESERVED11  0x0010  /* reserved - must be zero */
232#define KEYFLAG_SIGNATORYMASK   0x000F  /* key can sign DNS RR's of same name */
233
234#define  KEYFLAG_RESERVED_BITMASK ( KEYFLAG_RESERVED3 | \
235                    KEYFLAG_RESERVED4 | \
236                    KEYFLAG_RESERVED10| KEYFLAG_RESERVED11)
237
238/* The Algorithm field of the KEY and SIG RR's is an integer, {1..254} */
239#define ALGORITHM_MD5RSA    1   /* MD5 with RSA */
240#define ALGORITHM_EXPIRE_ONLY   253 /* No alg, no security */
241#define ALGORITHM_PRIVATE_OID   254 /* Key begins with OID indicating alg */
242
243/* Signatures */
244                    /* Size of a mod or exp in bits */
245#define MIN_MD5RSA_KEY_PART_BITS     512
246#define MAX_MD5RSA_KEY_PART_BITS    2552
247                    /* Total of binary mod and exp, bytes */
248#define MAX_MD5RSA_KEY_BYTES        ((MAX_MD5RSA_KEY_PART_BITS+7/8)*2+3)
249                    /* Max length of text sig block */
250#define MAX_KEY_BASE64          (((MAX_MD5RSA_KEY_BYTES+2)/3)*4)
251
252/*
253 * Status return codes for T_UNSPEC conversion routines
254 */
255#define CONV_SUCCESS    0
256#define CONV_OVERFLOW   (-1)
257#define CONV_BADFMT (-2)
258#define CONV_BADCKSUM   (-3)
259#define CONV_BADBUFLEN  (-4)
260
261#ifndef BYTE_ORDER
262#if (BSD >= 199103)
263# include <machine/endian.h>
264#else
265#ifdef linux
266# include <endian.h>
267#else
268#define LITTLE_ENDIAN   1234    /* least-significant byte first (vax, pc) */
269#define BIG_ENDIAN  4321    /* most-significant byte first (IBM, net) */
270#define PDP_ENDIAN  3412    /* LSB first in word, MSW first in long (pdp)*/
271
272#if defined(vax) || defined(ns32000) || defined(sun386) || defined(i386) || \
273    defined(MIPSEL) || defined(_MIPSEL) || defined(BIT_ZERO_ON_RIGHT) || \
274    defined(__alpha__) || defined(__alpha)
275#define BYTE_ORDER  LITTLE_ENDIAN
276#endif
277
278#if defined(sel) || defined(pyr) || defined(mc68000) || defined(sparc) || \
279    defined(is68k) || defined(tahoe) || defined(ibm032) || defined(ibm370) || \
280    defined(MIPSEB) || defined(_MIPSEB) || defined(_IBMR2) || defined(DGUX) ||\
281    defined(apollo) || defined(__convex__) || defined(_CRAY) || \
282    defined(__hppa) || defined(__hp9000) || \
283    defined(__hp9000s300) || defined(__hp9000s700) || \
284    defined (BIT_ZERO_ON_LEFT) || defined(m68k)
285#define BYTE_ORDER  BIG_ENDIAN
286#endif
287#endif /* linux */
288#endif /* BSD */
289#endif /* BYTE_ORDER */
290
291#if !defined(BYTE_ORDER) || \
292    (BYTE_ORDER != BIG_ENDIAN && BYTE_ORDER != LITTLE_ENDIAN && \
293    BYTE_ORDER != PDP_ENDIAN)
294    /* you must determine what the correct bit order is for
295     * your compiler - the next line is an intentional error
296     * which will force your compiles to bomb until you fix
297     * the above macros.
298  error "Undefined or invalid BYTE_ORDER";
299     */
300#endif
301
302/*
303 * Structure for query header.  The order of the fields is machine- and
304 * compiler-dependent, depending on the byte/bit order and the layout
305 * of bit fields.  We use bit fields only in int variables, as this
306 * is all ANSI requires.  This requires a somewhat confusing rearrangement.
307 */
308
309typedef struct {
310    unsigned    id :16;     /* query identification number */
311#if BYTE_ORDER == BIG_ENDIAN
312            /* fields in third byte */
313    unsigned    qr: 1;      /* response flag */
314    unsigned    opcode: 4;  /* purpose of message */
315    unsigned    aa: 1;      /* authoritive answer */
316    unsigned    tc: 1;      /* truncated message */
317    unsigned    rd: 1;      /* recursion desired */
318            /* fields in fourth byte */
319    unsigned    ra: 1;      /* recursion available */
320    unsigned    unused :1;  /* unused bits (MBZ as of 4.9.3a3) */
321    unsigned    ad: 1;      /* authentic data from named */
322    unsigned    cd: 1;      /* checking disabled by resolver */
323    unsigned    rcode :4;   /* response code */
324#endif
325#if BYTE_ORDER == LITTLE_ENDIAN || BYTE_ORDER == PDP_ENDIAN
326            /* fields in third byte */
327    unsigned    rd :1;      /* recursion desired */
328    unsigned    tc :1;      /* truncated message */
329    unsigned    aa :1;      /* authoritive answer */
330    unsigned    opcode :4;  /* purpose of message */
331    unsigned    qr :1;      /* response flag */
332            /* fields in fourth byte */
333    unsigned    rcode :4;   /* response code */
334    unsigned    cd: 1;      /* checking disabled by resolver */
335    unsigned    ad: 1;      /* authentic data from named */
336    unsigned    unused :1;  /* unused bits (MBZ as of 4.9.3a3) */
337    unsigned    ra :1;      /* recursion available */
338#endif
339            /* remaining bytes */
340    unsigned    qdcount :16;    /* number of question entries */
341    unsigned    ancount :16;    /* number of answer entries */
342    unsigned    nscount :16;    /* number of authority entries */
343    unsigned    arcount :16;    /* number of resource entries */
344} HEADER;
345
346/*
347 * Defines for handling compressed domain names
348 */
349#define INDIR_MASK  0xc0
350
351extern  u_int16_t   _getshort __P((const u_char *));
352extern  u_int32_t   _getlong __P((const u_char *));
353
354/*
355 * Inline versions of get/put short/long.  Pointer is advanced.
356 *
357 * These macros demonstrate the property of C whereby it can be
358 * portable or it can be elegant but rarely both.
359 */
360#define GETSHORT(s, cp) { \
361    register u_char *t_cp = (u_char *)(cp); \
362    (s) = ((u_int16_t)t_cp[0] << 8) \
363        | ((u_int16_t)t_cp[1]) \
364        ; \
365    (cp) += INT16SZ; \
366}
367
368#define GETLONG(l, cp) { \
369    register u_char *t_cp = (u_char *)(cp); \
370    (l) = ((u_int32_t)t_cp[0] << 24) \
371        | ((u_int32_t)t_cp[1] << 16) \
372        | ((u_int32_t)t_cp[2] << 8) \
373        | ((u_int32_t)t_cp[3]) \
374        ; \
375    (cp) += INT32SZ; \
376}
377
378#define PUTSHORT(s, cp) { \
379    register u_int16_t t_s = (u_int16_t)(s); \
380    register u_char *t_cp = (u_char *)(cp); \
381    *t_cp++ = (char) (t_s >> 8); \
382    *t_cp   = (char) t_s; \
383    (cp) += INT16SZ; \
384}
385
386#define PUTLONG(l, cp) { \
387    register u_int32_t t_l = (u_int32_t)(l); \
388    register u_char *t_cp = (u_char *)(cp); \
389    *t_cp++ = t_l >> 24; \
390    *t_cp++ = t_l >> 16; \
391    *t_cp++ = t_l >> 8; \
392    *t_cp   = t_l; \
393    (cp) += INT32SZ; \
394}
395
396#endif /* !_NAMESER_H_ */
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