summaryrefslogtreecommitdiffstats
path: root/include/arpa/nameser.h
blob: 1f5ce4539f2498966fbf7a799c22d70ba0c3f2ec (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
/*
 * Copyright (c) 1983, 1989, 1993
 *    The Regents of the University of California.  All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

/*
 * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
 * Copyright (c) 1996-1999 by Internet Software Consortium.
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
 * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

/*
 *	$Id: nameser.h,v 1.7.18.2 2008/04/03 23:15:15 marka Exp $
 * $FreeBSD$
 */

#ifndef _ARPA_NAMESER_H_
#define _ARPA_NAMESER_H_

/*! \file */

#define BIND_4_COMPAT

#include <sys/param.h>
#include <sys/types.h>
#include <sys/cdefs.h>

/*%
 * Revision information.  This is the release date in YYYYMMDD format.
 * It can change every day so the right thing to do with it is use it
 * in preprocessor commands such as "#if (__NAMESER > 19931104)".  Do not
 * compare for equality; rather, use it to determine whether your libbind.a
 * contains a new enough lib/nameser/ to support the feature you need.
 */

#define __NAMESER	19991006	/*%< New interface version stamp. */
/*
 * Define constants based on RFC0883, RFC1034, RFC 1035
 */
#define NS_PACKETSZ	512	/*%< default UDP packet size */
#define NS_MAXDNAME	1025	/*%< maximum domain name */
#define NS_MAXMSG	65535	/*%< maximum message size */
#define NS_MAXCDNAME	255	/*%< maximum compressed domain name */
#define NS_MAXLABEL	63	/*%< maximum length of domain label */
#define NS_HFIXEDSZ	12	/*%< #/bytes of fixed data in header */
#define NS_QFIXEDSZ	4	/*%< #/bytes of fixed data in query */
#define NS_RRFIXEDSZ	10	/*%< #/bytes of fixed data in r record */
#define NS_INT32SZ	4	/*%< #/bytes of data in a u_int32_t */
#define NS_INT16SZ	2	/*%< #/bytes of data in a u_int16_t */
#define NS_INT8SZ	1	/*%< #/bytes of data in a u_int8_t */
#define NS_INADDRSZ	4	/*%< IPv4 T_A */
#define NS_IN6ADDRSZ	16	/*%< IPv6 T_AAAA */
#define NS_CMPRSFLGS	0xc0	/*%< Flag bits indicating name compression. */
#define NS_DEFAULTPORT	53	/*%< For both TCP and UDP. */
/*
 * These can be expanded with synonyms, just keep ns_parse.c:ns_parserecord()
 * in synch with it.
 */
typedef enum __ns_sect {
	ns_s_qd = 0,		/*%< Query: Question. */
	ns_s_zn = 0,		/*%< Update: Zone. */
	ns_s_an = 1,		/*%< Query: Answer. */
	ns_s_pr = 1,		/*%< Update: Prerequisites. */
	ns_s_ns = 2,		/*%< Query: Name servers. */
	ns_s_ud = 2,		/*%< Update: Update. */
	ns_s_ar = 3,		/*%< Query|Update: Additional records. */
	ns_s_max = 4
} ns_sect;

/*%
 * This is a message handle.  It is caller allocated and has no dynamic data.
 * This structure is intended to be opaque to all but ns_parse.c, thus the
 * leading _'s on the member names.  Use the accessor functions, not the _'s.
 */
typedef struct __ns_msg {
	const u_char	*_msg, *_eom;
	u_int16_t	_id, _flags, _counts[ns_s_max];
	const u_char	*_sections[ns_s_max];
	ns_sect		_sect;
	int		_rrnum;
	const u_char	*_msg_ptr;
} ns_msg;

/* Private data structure - do not use from outside library. */
struct _ns_flagdata {  int mask, shift;  };
extern struct _ns_flagdata _ns_flagdata[];

/* Accessor macros - this is part of the public interface. */

#define ns_msg_id(handle) ((handle)._id + 0)
#define ns_msg_base(handle) ((handle)._msg + 0)
#define ns_msg_end(handle) ((handle)._eom + 0)
#define ns_msg_size(handle) ((handle)._eom - (handle)._msg)
#define ns_msg_count(handle, section) ((handle)._counts[section] + 0)

/*%
 * This is a parsed record.  It is caller allocated and has no dynamic data.
 */
typedef	struct __ns_rr {
	char		name[NS_MAXDNAME];
	u_int16_t	type;
	u_int16_t	rr_class;
	u_int32_t	ttl;
	u_int16_t	rdlength;
	const u_char *	rdata;
} ns_rr;

/* Accessor macros - this is part of the public interface. */
#define ns_rr_name(rr)	(((rr).name[0] != '\0') ? (rr).name : ".")
#define ns_rr_type(rr)	((ns_type)((rr).type + 0))
#define ns_rr_class(rr)	((ns_class)((rr).rr_class + 0))
#define ns_rr_ttl(rr)	((rr).ttl + 0)
#define ns_rr_rdlen(rr)	((rr).rdlength + 0)
#define ns_rr_rdata(rr)	((rr).rdata + 0)

/*%
 * These don't have to be in the same order as in the packet flags word,
 * and they can even overlap in some cases, but they will need to be kept
 * in synch with ns_parse.c:ns_flagdata[].
 */
typedef enum __ns_flag {
	ns_f_qr,		/*%< Question/Response. */
	ns_f_opcode,		/*%< Operation code. */
	ns_f_aa,		/*%< Authoritative Answer. */
	ns_f_tc,		/*%< Truncation occurred. */
	ns_f_rd,		/*%< Recursion Desired. */
	ns_f_ra,		/*%< Recursion Available. */
	ns_f_z,			/*%< MBZ. */
	ns_f_ad,		/*%< Authentic Data (DNSSEC). */
	ns_f_cd,		/*%< Checking Disabled (DNSSEC). */
	ns_f_rcode,		/*%< Response code. */
	ns_f_max
} ns_flag;

/*%
 * Currently defined opcodes.
 */
typedef enum __ns_opcode {
	ns_o_query = 0,		/*%< Standard query. */
	ns_o_iquery = 1,	/*%< Inverse query (deprecated/unsupported). */
	ns_o_status = 2,	/*%< Name server status query (unsupported). */
				/* Opcode 3 is undefined/reserved. */
	ns_o_notify = 4,	/*%< Zone change notification. */
	ns_o_update = 5,	/*%< Zone update message. */
	ns_o_max = 6
} ns_opcode;

/*%
 * Currently defined response codes.
 */
typedef	enum __ns_rcode {
	ns_r_noerror = 0,	/*%< No error occurred. */
	ns_r_formerr = 1,	/*%< Format error. */
	ns_r_servfail = 2,	/*%< Server failure. */
	ns_r_nxdomain = 3,	/*%< Name error. */
	ns_r_notimpl = 4,	/*%< Unimplemented. */
	ns_r_refused = 5,	/*%< Operation refused. */
	/* these are for BIND_UPDATE */
	ns_r_yxdomain = 6,	/*%< Name exists */
	ns_r_yxrrset = 7,	/*%< RRset exists */
	ns_r_nxrrset = 8,	/*%< RRset does not exist */
	ns_r_notauth = 9,	/*%< Not authoritative for zone */
	ns_r_notzone = 10,	/*%< Zone of record different from zone section */
	ns_r_max = 11,
	/* The following are EDNS extended rcodes */
	ns_r_badvers = 16,
	/* The following are TSIG errors */
	ns_r_badsig = 16,
	ns_r_badkey = 17,
	ns_r_badtime = 18
} ns_rcode;

/* BIND_UPDATE */
typedef enum __ns_update_operation {
	ns_uop_delete = 0,
	ns_uop_add = 1,
	ns_uop_max = 2
} ns_update_operation;

/*%
 * This structure is used for TSIG authenticated messages
 */
struct ns_tsig_key {
        char name[NS_MAXDNAME], alg[NS_MAXDNAME];
        unsigned char *data;
        int len;
};
typedef struct ns_tsig_key ns_tsig_key;

/*%
 * This structure is used for TSIG authenticated TCP messages
 */
struct ns_tcp_tsig_state {
	int counter;
	struct dst_key *key;
	void *ctx;
	unsigned char sig[NS_PACKETSZ];
	int siglen;
};
typedef struct ns_tcp_tsig_state ns_tcp_tsig_state;

#define NS_TSIG_FUDGE 300
#define NS_TSIG_TCP_COUNT 100
#define NS_TSIG_ALG_HMAC_MD5 "HMAC-MD5.SIG-ALG.REG.INT"

#define NS_TSIG_ERROR_NO_TSIG -10
#define NS_TSIG_ERROR_NO_SPACE -11
#define NS_TSIG_ERROR_FORMERR -12

/*%
 * Currently defined type values for resources and queries.
 */
typedef enum __ns_type {
	ns_t_invalid = 0,	/*%< Cookie. */
	ns_t_a = 1,		/*%< Host address. */
	ns_t_ns = 2,		/*%< Authoritative server. */
	ns_t_md = 3,		/*%< Mail destination. */
	ns_t_mf = 4,		/*%< Mail forwarder. */
	ns_t_cname = 5,		/*%< Canonical name. */
	ns_t_soa = 6,		/*%< Start of authority zone. */
	ns_t_mb = 7,		/*%< Mailbox domain name. */
	ns_t_mg = 8,		/*%< Mail group member. */
	ns_t_mr = 9,		/*%< Mail rename name. */
	ns_t_null = 10,		/*%< Null resource record. */
	ns_t_wks = 11,		/*%< Well known service. */
	ns_t_ptr = 12,		/*%< Domain name pointer. */
	ns_t_hinfo = 13,	/*%< Host information. */
	ns_t_minfo = 14,	/*%< Mailbox information. */
	ns_t_mx = 15,		/*%< Mail routing information. */
	ns_t_txt = 16,		/*%< Text strings. */
	ns_t_rp = 17,		/*%< Responsible person. */
	ns_t_afsdb = 18,	/*%< AFS cell database. */
	ns_t_x25 = 19,		/*%< X_25 calling address. */
	ns_t_isdn = 20,		/*%< ISDN calling address. */
	ns_t_rt = 21,		/*%< Router. */
	ns_t_nsap = 22,		/*%< NSAP address. */
	ns_t_nsap_ptr = 23,	/*%< Reverse NSAP lookup (deprecated). */
	ns_t_sig = 24,		/*%< Security signature. */
	ns_t_key = 25,		/*%< Security key. */
	ns_t_px = 26,		/*%< X.400 mail mapping. */
	ns_t_gpos = 27,		/*%< Geographical position (withdrawn). */
	ns_t_aaaa = 28,		/*%< Ip6 Address. */
	ns_t_loc = 29,		/*%< Location Information. */
	ns_t_nxt = 30,		/*%< Next domain (security). */
	ns_t_eid = 31,		/*%< Endpoint identifier. */
	ns_t_nimloc = 32,	/*%< Nimrod Locator. */
	ns_t_srv = 33,		/*%< Server Selection. */
	ns_t_atma = 34,		/*%< ATM Address */
	ns_t_naptr = 35,	/*%< Naming Authority PoinTeR */
	ns_t_kx = 36,		/*%< Key Exchange */
	ns_t_cert = 37,		/*%< Certification record */
	ns_t_a6 = 38,		/*%< IPv6 address (deprecates AAAA) */
	ns_t_dname = 39,	/*%< Non-terminal DNAME (for IPv6) */
	ns_t_sink = 40,		/*%< Kitchen sink (experimentatl) */
	ns_t_opt = 41,		/*%< EDNS0 option (meta-RR) */
	ns_t_apl = 42,		/*%< Address prefix list (RFC3123) */
	ns_t_tkey = 249,	/*%< Transaction key */
	ns_t_tsig = 250,	/*%< Transaction signature. */
	ns_t_ixfr = 251,	/*%< Incremental zone transfer. */
	ns_t_axfr = 252,	/*%< Transfer zone of authority. */
	ns_t_mailb = 253,	/*%< Transfer mailbox records. */
	ns_t_maila = 254,	/*%< Transfer mail agent records. */
	ns_t_any = 255,		/*%< Wildcard match. */
	ns_t_zxfr = 256,	/*%< BIND-specific, nonstandard. */
	ns_t_max = 65536
} ns_type;

/* Exclusively a QTYPE? (not also an RTYPE) */
#define	ns_t_qt_p(t) (ns_t_xfr_p(t) || (t) == ns_t_any || \
		      (t) == ns_t_mailb || (t) == ns_t_maila)
/* Some kind of meta-RR? (not a QTYPE, but also not an RTYPE) */
#define	ns_t_mrr_p(t) ((t) == ns_t_tsig || (t) == ns_t_opt)
/* Exclusively an RTYPE? (not also a QTYPE or a meta-RR) */
#define ns_t_rr_p(t) (!ns_t_qt_p(t) && !ns_t_mrr_p(t))
#define ns_t_udp_p(t) ((t) != ns_t_axfr && (t) != ns_t_zxfr)
#define ns_t_xfr_p(t) ((t) == ns_t_axfr || (t) == ns_t_ixfr || \
		       (t) == ns_t_zxfr)

/*%
 * Values for class field
 */
typedef enum __ns_class {
	ns_c_invalid = 0,	/*%< Cookie. */
	ns_c_in = 1,		/*%< Internet. */
	ns_c_2 = 2,		/*%< unallocated/unsupported. */
	ns_c_chaos = 3,		/*%< MIT Chaos-net. */
	ns_c_hs = 4,		/*%< MIT Hesiod. */
	/* Query class values which do not appear in resource records */
	ns_c_none = 254,	/*%< for prereq. sections in update requests */
	ns_c_any = 255,		/*%< Wildcard match. */
	ns_c_max = 65536
} ns_class;

/* DNSSEC constants. */

typedef enum __ns_key_types {
	ns_kt_rsa = 1,		/*%< key type RSA/MD5 */
	ns_kt_dh  = 2,		/*%< Diffie Hellman */
	ns_kt_dsa = 3,		/*%< Digital Signature Standard (MANDATORY) */
	ns_kt_private = 254	/*%< Private key type starts with OID */
} ns_key_types;

typedef enum __ns_cert_types {
	cert_t_pkix = 1,	/*%< PKIX (X.509v3) */
	cert_t_spki = 2,	/*%< SPKI */
	cert_t_pgp  = 3,	/*%< PGP */
	cert_t_url  = 253,	/*%< URL private type */
	cert_t_oid  = 254	/*%< OID private type */
} ns_cert_types;

/* Flags field of the KEY RR rdata. */
#define	NS_KEY_TYPEMASK		0xC000	/*%< Mask for "type" bits */
#define	NS_KEY_TYPE_AUTH_CONF	0x0000	/*%< Key usable for both */
#define	NS_KEY_TYPE_CONF_ONLY	0x8000	/*%< Key usable for confidentiality */
#define	NS_KEY_TYPE_AUTH_ONLY	0x4000	/*%< Key usable for authentication */
#define	NS_KEY_TYPE_NO_KEY	0xC000	/*%< No key usable for either; no key */
/* The type bits can also be interpreted independently, as single bits: */
#define	NS_KEY_NO_AUTH		0x8000	/*%< Key unusable for authentication */
#define	NS_KEY_NO_CONF		0x4000	/*%< Key unusable for confidentiality */
#define	NS_KEY_RESERVED2	0x2000	/* Security is *mandatory* if bit=0 */
#define	NS_KEY_EXTENDED_FLAGS	0x1000	/*%< reserved - must be zero */
#define	NS_KEY_RESERVED4	0x0800  /*%< reserved - must be zero */
#define	NS_KEY_RESERVED5	0x0400  /*%< reserved - must be zero */
#define	NS_KEY_NAME_TYPE	0x0300	/*%< these bits determine the type */
#define	NS_KEY_NAME_USER	0x0000	/*%< key is assoc. with user */
#define	NS_KEY_NAME_ENTITY	0x0200	/*%< key is assoc. with entity eg host */
#define	NS_KEY_NAME_ZONE	0x0100	/*%< key is zone key */
#define	NS_KEY_NAME_RESERVED	0x0300	/*%< reserved meaning */
#define	NS_KEY_RESERVED8	0x0080  /*%< reserved - must be zero */
#define	NS_KEY_RESERVED9	0x0040  /*%< reserved - must be zero */
#define	NS_KEY_RESERVED10	0x0020  /*%< reserved - must be zero */
#define	NS_KEY_RESERVED11	0x0010  /*%< reserved - must be zero */
#define	NS_KEY_SIGNATORYMASK	0x000F	/*%< key can sign RR's of same name */
#define	NS_KEY_RESERVED_BITMASK ( NS_KEY_RESERVED2 | \
				  NS_KEY_RESERVED4 | \
				  NS_KEY_RESERVED5 | \
				  NS_KEY_RESERVED8 | \
				  NS_KEY_RESERVED9 | \
				  NS_KEY_RESERVED10 | \
				  NS_KEY_RESERVED11 )
#define NS_KEY_RESERVED_BITMASK2 0xFFFF /*%< no bits defined here */
/* The Algorithm field of the KEY and SIG RR's is an integer, {1..254} */
#define	NS_ALG_MD5RSA		1	/*%< MD5 with RSA */
#define	NS_ALG_DH               2	/*%< Diffie Hellman KEY */
#define	NS_ALG_DSA              3	/*%< DSA KEY */
#define	NS_ALG_DSS              NS_ALG_DSA
#define	NS_ALG_EXPIRE_ONLY	253	/*%< No alg, no security */
#define	NS_ALG_PRIVATE_OID	254	/*%< Key begins with OID giving alg */
/* Protocol values  */
/* value 0 is reserved */
#define NS_KEY_PROT_TLS         1
#define NS_KEY_PROT_EMAIL       2
#define NS_KEY_PROT_DNSSEC      3
#define NS_KEY_PROT_IPSEC       4
#define NS_KEY_PROT_ANY		255

/* Signatures */
#define	NS_MD5RSA_MIN_BITS	 512	/*%< Size of a mod or exp in bits */
#define	NS_MD5RSA_MAX_BITS	4096
	/* Total of binary mod and exp */
#define	NS_MD5RSA_MAX_BYTES	((NS_MD5RSA_MAX_BITS+7/8)*2+3)
	/* Max length of text sig block */
#define	NS_MD5RSA_MAX_BASE64	(((NS_MD5RSA_MAX_BYTES+2)/3)*4)
#define NS_MD5RSA_MIN_SIZE	((NS_MD5RSA_MIN_BITS+7)/8)
#define NS_MD5RSA_MAX_SIZE	((NS_MD5RSA_MAX_BITS+7)/8)

#define NS_DSA_SIG_SIZE         41
#define NS_DSA_MIN_SIZE         213
#define NS_DSA_MAX_BYTES        405

/* Offsets into SIG record rdata to find various values */
#define	NS_SIG_TYPE	0	/*%< Type flags */
#define	NS_SIG_ALG	2	/*%< Algorithm */
#define	NS_SIG_LABELS	3	/*%< How many labels in name */
#define	NS_SIG_OTTL	4	/*%< Original TTL */
#define	NS_SIG_EXPIR	8	/*%< Expiration time */
#define	NS_SIG_SIGNED	12	/*%< Signature time */
#define	NS_SIG_FOOT	16	/*%< Key footprint */
#define	NS_SIG_SIGNER	18	/*%< Domain name of who signed it */
/* How RR types are represented as bit-flags in NXT records */
#define	NS_NXT_BITS 8
#define	NS_NXT_BIT_SET(  n,p) (p[(n)/NS_NXT_BITS] |=  (0x80>>((n)%NS_NXT_BITS)))
#define	NS_NXT_BIT_CLEAR(n,p) (p[(n)/NS_NXT_BITS] &= ~(0x80>>((n)%NS_NXT_BITS)))
#define	NS_NXT_BIT_ISSET(n,p) (p[(n)/NS_NXT_BITS] &   (0x80>>((n)%NS_NXT_BITS)))
#define NS_NXT_MAX 127

/*%
 * EDNS0 extended flags and option codes, host order.
 */
#define NS_OPT_DNSSEC_OK	0x8000U
#define NS_OPT_NSID             3

/*%
 * Inline versions of get/put short/long.  Pointer is advanced.
 */
#define NS_GET16(s, cp) do { \
	register const u_char *t_cp = (const u_char *)(cp); \
	(s) = ((u_int16_t)t_cp[0] << 8) \
	    | ((u_int16_t)t_cp[1]) \
	    ; \
	(cp) += NS_INT16SZ; \
} while (0)

#define NS_GET32(l, cp) do { \
	register const u_char *t_cp = (const u_char *)(cp); \
	(l) = ((u_int32_t)t_cp[0] << 24) \
	    | ((u_int32_t)t_cp[1] << 16) \
	    | ((u_int32_t)t_cp[2] << 8) \
	    | ((u_int32_t)t_cp[3]) \
	    ; \
	(cp) += NS_INT32SZ; \
} while (0)

#define NS_PUT16(s, cp) do { \
	register u_int16_t t_s = (u_int16_t)(s); \
	register u_char *t_cp = (u_char *)(cp); \
	*t_cp++ = t_s >> 8; \
	*t_cp   = t_s; \
	(cp) += NS_INT16SZ; \
} while (0)

#define NS_PUT32(l, cp) do { \
	register u_int32_t t_l = (u_int32_t)(l); \
	register u_char *t_cp = (u_char *)(cp); \
	*t_cp++ = t_l >> 24; \
	*t_cp++ = t_l >> 16; \
	*t_cp++ = t_l >> 8; \
	*t_cp   = t_l; \
	(cp) += NS_INT32SZ; \
} while (0)

/*%
 * ANSI C identifier hiding for bind's lib/nameser.
 */
#define	ns_msg_getflag		__ns_msg_getflag
#define ns_get16		__ns_get16
#define ns_get32		__ns_get32
#define ns_put16		__ns_put16
#define ns_put32		__ns_put32
#define ns_initparse		__ns_initparse
#define ns_skiprr		__ns_skiprr
#define ns_parserr		__ns_parserr
#define	ns_sprintrr		__ns_sprintrr
#define	ns_sprintrrf		__ns_sprintrrf
#define	ns_format_ttl		__ns_format_ttl
#define	ns_parse_ttl		__ns_parse_ttl
#if 0
#define ns_datetosecs		__ns_datetosecs
#endif
#define	ns_name_ntol		__ns_name_ntol
#define	ns_name_ntop		__ns_name_ntop
#define	ns_name_pton		__ns_name_pton
#define	ns_name_unpack		__ns_name_unpack
#define	ns_name_pack		__ns_name_pack
#define	ns_name_compress	__ns_name_compress
#define	ns_name_uncompress	__ns_name_uncompress
#define	ns_name_skip		__ns_name_skip
#define	ns_name_rollback	__ns_name_rollback
#if 0
#define	ns_sign			__ns_sign
#define	ns_sign2		__ns_sign2
#define	ns_sign_tcp		__ns_sign_tcp
#define	ns_sign_tcp2		__ns_sign_tcp2
#define	ns_sign_tcp_init	__ns_sign_tcp_init
#define ns_find_tsig		__ns_find_tsig
#define	ns_verify		__ns_verify
#define	ns_verify_tcp		__ns_verify_tcp
#define	ns_verify_tcp_init	__ns_verify_tcp_init
#endif
#define	ns_samedomain		__ns_samedomain
#if 0
#define	ns_subdomain		__ns_subdomain
#endif
#define	ns_makecanon		__ns_makecanon
#define	ns_samename		__ns_samename

__BEGIN_DECLS
int		ns_msg_getflag(ns_msg, int);
u_int		ns_get16(const u_char *);
u_long		ns_get32(const u_char *);
void		ns_put16(u_int, u_char *);
void		ns_put32(u_long, u_char *);
int		ns_initparse(const u_char *, int, ns_msg *);
int		ns_skiprr(const u_char *, const u_char *, ns_sect, int);
int		ns_parserr(ns_msg *, ns_sect, int, ns_rr *);
int		ns_sprintrr(const ns_msg *, const ns_rr *,
			    const char *, const char *, char *, size_t);
int		ns_sprintrrf(const u_char *, size_t, const char *,
			     ns_class, ns_type, u_long, const u_char *,
			     size_t, const char *, const char *,
			     char *, size_t);
int		ns_format_ttl(u_long, char *, size_t);
int		ns_parse_ttl(const char *, u_long *);
#if 0
u_int32_t	ns_datetosecs(const char *cp, int *errp);
#endif
int		ns_name_ntol(const u_char *, u_char *, size_t);
int		ns_name_ntop(const u_char *, char *, size_t);
int		ns_name_pton(const char *, u_char *, size_t);
int		ns_name_unpack(const u_char *, const u_char *,
			       const u_char *, u_char *, size_t);
int		ns_name_pack(const u_char *, u_char *, int,
			     const u_char **, const u_char **);
int		ns_name_uncompress(const u_char *, const u_char *,
				   const u_char *, char *, size_t);
int		ns_name_compress(const char *, u_char *, size_t,
				 const u_char **, const u_char **);
int		ns_name_skip(const u_char **, const u_char *);
void		ns_name_rollback(const u_char *, const u_char **,
				 const u_char **);
#if 0
int		ns_sign(u_char *, int *, int, int, void *,
			const u_char *, int, u_char *, int *, time_t);
int		ns_sign2(u_char *, int *, int, int, void *,
			 const u_char *, int, u_char *, int *, time_t,
			 u_char **, u_char **);
int		ns_sign_tcp(u_char *, int *, int, int,
			    ns_tcp_tsig_state *, int);
int		ns_sign_tcp2(u_char *, int *, int, int,
			     ns_tcp_tsig_state *, int,
			     u_char **, u_char **);
int		ns_sign_tcp_init(void *, const u_char *, int,
				 ns_tcp_tsig_state *);
u_char		*ns_find_tsig(u_char *, u_char *);
int		ns_verify(u_char *, int *, void *,
			  const u_char *, int, u_char *, int *,
			  time_t *, int);
int		ns_verify_tcp(u_char *, int *, ns_tcp_tsig_state *, int);
int		ns_verify_tcp_init(void *, const u_char *, int,
				   ns_tcp_tsig_state *);
#endif
int		ns_samedomain(const char *, const char *);
#if 0
int		ns_subdomain(const char *, const char *);
#endif
int		ns_makecanon(const char *, char *, size_t);
int		ns_samename(const char *, const char *);
__END_DECLS

#ifdef BIND_4_COMPAT
#include <arpa/nameser_compat.h>
#endif

#endif /* !_ARPA_NAMESER_H_ */
/*! \file */
OpenPOWER on IntegriCloud