1 /*
2 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
3 * Use is subject to license terms.
4 * Copyright (c) 2016, Chris Fraire <cfraire@me.com>.
5 */
6
7 /*
8 * Copyright (c) 1983, 1989, 1993
9 * The Regents of the University of California. All rights reserved.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. All advertising materials mentioning features or use of this software
20 * must display the following acknowledgement:
21 * This product includes software developed by the University of
22 * California, Berkeley and its contributors.
23 * 4. Neither the name of the University nor the names of its contributors
24 * may be used to endorse or promote products derived from this software
25 * without specific prior written permission.
26 *
27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 * SUCH DAMAGE.
38 */
39
40 /*
41 * Portions Copyright (C) 2004, 2005, 2008, 2009
42 * Internet Systems Consortium, Inc. ("ISC")
43 * Portions Copyright (C) 1996-2003 Internet Software Consortium.
44 *
45 * Permission to use, copy, modify, and/or distribute this software for any
46 * purpose with or without fee is hereby granted, provided that the above
47 * copyright notice and this permission notice appear in all copies.
48 *
49 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
50 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
51 * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
52 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
53 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
54 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
55 * PERFORMANCE OF THIS SOFTWARE.
56 */
57
58 /*
59 * $Id: nameser.h,v 8.50 2003/05/27 23:36:52 marka Exp $
60 */
61
62 #ifndef _ARPA_NAMESER_H
63 #define _ARPA_NAMESER_H
64
65 #include <sys/isa_defs.h>
66
67
68 #ifdef __cplusplus
69 extern "C" {
70 #endif
71
72 #define BIND_4_COMPAT
73
74 /*
75 * Revision information. This is the release date in YYYYMMDD format.
76 * It can change every day so the right thing to do with it is use it
77 * in preprocessor commands such as "#if (__NAMESER > 19931104)". Do not
78 * compare for equality; rather, use it to determine whether your libresolv
79 * contains a new enough lib/nameser/ to support the feature you need.
80 */
81
82 #define __NAMESER 20090302 /* New interface version stamp. */
83
84 /*
85 * Define constants based on RFC 883, RFC 1034, RFC 1035
86 */
87 #define NS_PACKETSZ 512 /* default UDP packet size */
88 #define NS_MAXDNAME 1025 /* maximum domain name */
89 #define NS_MAXMSG 65535 /* maximum message size */
90 #define NS_MAXCDNAME 255 /* maximum compressed domain name */
91 #define NS_MAXLABEL 63 /* maximum length of domain label */
92 #define NS_MAXLABELS 128 /* theoretical max #/labels per domain name */
93 #define NS_MAXNNAME 256 /* maximum uncompressed (binary) domain name */
94 #define NS_MAXPADDR (sizeof ("ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff"))
95 #define NS_HFIXEDSZ 12 /* #/bytes of fixed data in header */
96 #define NS_QFIXEDSZ 4 /* #/bytes of fixed data in query */
97 #define NS_RRFIXEDSZ 10 /* #/bytes of fixed data in r record */
98 #define NS_INT32SZ 4 /* #/bytes of data in a u_int32_t */
99 #define NS_INT16SZ 2 /* #/bytes of data in a u_int16_t */
100 #define NS_INT8SZ 1 /* #/bytes of data in a u_int8_t */
101 #define NS_INADDRSZ 4 /* IPv4 T_A */
102 #define NS_IN6ADDRSZ 16 /* IPv6 T_AAAA */
103 #define NS_CMPRSFLGS 0xc0 /* Flag bits indicating name compression. */
104 #define NS_DEFAULTPORT 53 /* For both TCP and UDP. */
105
106 /*
107 * These can be expanded with synonyms, just keep ns_parse.c:ns_parserecord()
108 * in synch with it.
109 */
110 typedef enum __ns_sect {
111 ns_s_qd = 0, /* Query: Question. */
112 ns_s_zn = 0, /* Update: Zone. */
113 ns_s_an = 1, /* Query: Answer. */
114 ns_s_pr = 1, /* Update: Prerequisites. */
115 ns_s_ns = 2, /* Query: Name servers. */
116 ns_s_ud = 2, /* Update: Update. */
117 ns_s_ar = 3, /* Query|Update: Additional records. */
118 ns_s_max = 4
119 } ns_sect;
120
121 /*
122 * Network name (compressed or not) type. Equivalent to a pointer when used
123 * in a function prototype. Can be const'd.
124 */
125 typedef uchar_t ns_nname[NS_MAXNNAME];
126 typedef const uchar_t *ns_nname_ct;
127 typedef uchar_t *ns_nname_t;
128
129 struct ns_namemap { ns_nname_ct base; int len; };
130 typedef struct ns_namemap *ns_namemap_t;
131 typedef const struct ns_namemap *ns_namemap_ct;
132
133 /*
134 * This is a message handle. It is caller allocated and has no dynamic data.
135 * This structure is intended to be opaque to all but ns_parse.c, thus the
136 * leading _'s on the member names. Use the accessor functions, not the _'s.
137 */
138 typedef struct __ns_msg {
139 const uchar_t *_msg, *_eom;
140 uint16_t _id, _flags, _counts[ns_s_max];
141 const uchar_t *_sections[ns_s_max];
142 ns_sect _sect;
143 int _rrnum;
144 const uchar_t *_msg_ptr;
145 } ns_msg;
146
147 /*
148 * This is a newmsg handle, used when constructing new messages with
149 * ns_newmsg_init, et al.
150 */
151 struct ns_newmsg {
152 ns_msg msg;
153 const uchar_t *dnptrs[25];
154 const uchar_t **lastdnptr;
155 };
156 typedef struct ns_newmsg ns_newmsg;
157
158 /* Private data structure - do not use from outside library. */
159 struct _ns_flagdata { int mask, shift; };
160 extern struct _ns_flagdata _ns_flagdata[];
161
162 /* Accessor macros - this is part of the public interface. */
163 #define ns_msg_id(handle) ((handle)._id + 0)
164 #define ns_msg_base(handle) ((handle)._msg + 0)
165 #define ns_msg_end(handle) ((handle)._eom + 0)
166 #define ns_msg_size(handle) ((handle)._eom - (handle)._msg)
167 #define ns_msg_count(handle, section) ((handle)._counts[section] + 0)
168
169 /*
170 * This is a parsed record. It is caller allocated and has no dynamic data.
171 */
172 typedef struct __ns_rr {
173 char name[NS_MAXDNAME];
174 uint16_t type;
175 uint16_t rr_class;
176 uint32_t ttl;
177 uint16_t rdlength;
178 const uchar_t *rdata;
179 } ns_rr;
180
181 /*
182 * Same thing, but using uncompressed network binary names, and real C types.
183 */
184 typedef struct __ns_rr2 {
185 ns_nname nname;
186 size_t nnamel;
187 int type;
188 int rr_class;
189 uint_t ttl;
190 int rdlength;
191 const uchar_t *rdata;
192 } ns_rr2;
193
194 /* Accessor macros - this is part of the public interface. */
195 #define ns_rr_name(rr) (((rr).name[0] != '\0') ? (rr).name : ".")
196 #define ns_rr_nname(rr) ((const ns_nname_t)(rr).nname)
197 #define ns_rr_nnamel(rr) ((rr).nnamel + 0)
198 #define ns_rr_type(rr) ((ns_type)((rr).type + 0))
199 #define ns_rr_class(rr) ((ns_class)((rr).rr_class + 0))
200 #define ns_rr_ttl(rr) ((rr).ttl + 0)
201 #define ns_rr_rdlen(rr) ((rr).rdlength + 0)
202 #define ns_rr_rdata(rr) ((rr).rdata + 0)
203
204 /*
205 * These don't have to be in the same order as in the packet flags word,
206 * and they can even overlap in some cases, but they will need to be kept
207 * in synch with ns_parse.c:ns_flagdata[].
208 */
209 typedef enum __ns_flag {
210 ns_f_qr, /* Question/Response. */
211 ns_f_opcode, /* Operation code. */
212 ns_f_aa, /* Authoritative Answer. */
213 ns_f_tc, /* Truncation occurred. */
214 ns_f_rd, /* Recursion Desired. */
215 ns_f_ra, /* Recursion Available. */
216 ns_f_z, /* MBZ. */
217 ns_f_ad, /* Authentic Data (DNSSEC). */
218 ns_f_cd, /* Checking Disabled (DNSSEC). */
219 ns_f_rcode, /* Response code. */
220 ns_f_max
221 } ns_flag;
222
223 /*
224 * Currently defined opcodes.
225 */
226 typedef enum __ns_opcode {
227 ns_o_query = 0, /* Standard query. */
228 ns_o_iquery = 1, /* Inverse query (deprecated/unsupported). */
229 ns_o_status = 2, /* Name server status query (unsupported). */
230 /* Opcode 3 is undefined/reserved. */
231 ns_o_notify = 4, /* Zone change notification. */
232 ns_o_update = 5, /* Zone update message. */
233 ns_o_max = 6
234 } ns_opcode;
235
236 /*
237 * Currently defined response codes.
238 */
239 typedef enum __ns_rcode {
240 ns_r_noerror = 0, /* No error occurred. */
241 ns_r_formerr = 1, /* Format error. */
242 ns_r_servfail = 2, /* Server failure. */
243 ns_r_nxdomain = 3, /* Name error. */
244 ns_r_notimpl = 4, /* Unimplemented. */
245 ns_r_refused = 5, /* Operation refused. */
246 /* these are for BIND_UPDATE */
247 ns_r_yxdomain = 6, /* Name exists */
248 ns_r_yxrrset = 7, /* RRset exists */
249 ns_r_nxrrset = 8, /* RRset does not exist */
250 ns_r_notauth = 9, /* Not authoritative for zone */
251 ns_r_notzone = 10, /* Zone of record different from zone section */
252 ns_r_max = 11,
253 /* The following are EDNS extended rcodes */
254 ns_r_badvers = 16,
255 /* The following are TSIG errors */
256 ns_r_badsig = 16,
257 ns_r_badkey = 17,
258 ns_r_badtime = 18
259 } ns_rcode;
260
261 /* BIND_UPDATE */
262 typedef enum __ns_update_operation {
263 ns_uop_delete = 0,
264 ns_uop_add = 1,
265 ns_uop_max = 2
266 } ns_update_operation;
267
268 /*
269 * This RR-like structure is particular to UPDATE.
270 */
271 struct ns_updrec {
272 struct ns_updrec *r_prev; /* prev record */
273 struct ns_updrec *r_next; /* next record */
274 uint8_t r_section; /* ZONE/PREREQUISITE/UPDATE */
275 char *r_dname; /* owner of the RR */
276 uint16_t r_class; /* class number */
277 uint16_t r_type; /* type number */
278 uint32_t r_ttl; /* time to live */
279 uchar_t *r_data; /* rdata fields as text string */
280 uint16_t r_size; /* size of r_data field */
281 int r_opcode; /* type of operation */
282 /* following fields for private use by the resolver/server routines */
283 struct ns_updrec *r_grpnext; /* next record when grouped */
284 struct databuf *r_dp; /* databuf to process */
285 struct databuf *r_deldp; /* databuf's deleted/overwritten */
286 uint16_t r_zone; /* zone number on server */
287 };
288 typedef struct ns_updrec ns_updrec;
289
290 /*
291 * This structure is used for TSIG authenticated messages
292 */
293 struct ns_tsig_key {
294 char name[NS_MAXDNAME], alg[NS_MAXDNAME];
295 unsigned char *data;
296 int len;
297 };
298 typedef struct ns_tsig_key ns_tsig_key;
299
300 /*
301 * This structure is used for TSIG authenticated TCP messages
302 */
303 struct ns_tcp_tsig_state {
304 int counter;
305 struct dst_key *key;
306 void *ctx;
307 unsigned char sig[NS_PACKETSZ];
308 int siglen;
309 };
310 typedef struct ns_tcp_tsig_state ns_tcp_tsig_state;
311
312 #define NS_TSIG_FUDGE 300
313 #define NS_TSIG_TCP_COUNT 100
314 #define NS_TSIG_ALG_HMAC_MD5 "HMAC-MD5.SIG-ALG.REG.INT"
315
316 #define NS_TSIG_ERROR_NO_TSIG -10
317 #define NS_TSIG_ERROR_NO_SPACE -11
318 #define NS_TSIG_ERROR_FORMERR -12
319
320 /*
321 * Currently defined type values for resources and queries.
322 */
323 typedef enum __ns_type {
324 ns_t_invalid = 0, /* Cookie. */
325 ns_t_a = 1, /* Host address. */
326 ns_t_ns = 2, /* Authoritative server. */
327 ns_t_md = 3, /* Mail destination. */
328 ns_t_mf = 4, /* Mail forwarder. */
329 ns_t_cname = 5, /* Canonical name. */
330 ns_t_soa = 6, /* Start of authority zone. */
331 ns_t_mb = 7, /* Mailbox domain name. */
332 ns_t_mg = 8, /* Mail group member. */
333 ns_t_mr = 9, /* Mail rename name. */
334 ns_t_null = 10, /* Null resource record. */
335 ns_t_wks = 11, /* Well known service. */
336 ns_t_ptr = 12, /* Domain name pointer. */
337 ns_t_hinfo = 13, /* Host information. */
338 ns_t_minfo = 14, /* Mailbox information. */
339 ns_t_mx = 15, /* Mail routing information. */
340 ns_t_txt = 16, /* Text strings. */
341 ns_t_rp = 17, /* Responsible person. */
342 ns_t_afsdb = 18, /* AFS cell database. */
343 ns_t_x25 = 19, /* X_25 calling address. */
344 ns_t_isdn = 20, /* ISDN calling address. */
345 ns_t_rt = 21, /* Router. */
346 ns_t_nsap = 22, /* NSAP address. */
347 ns_t_nsap_ptr = 23, /* Reverse NSAP lookup (deprecated). */
348 ns_t_sig = 24, /* Security signature. */
349 ns_t_key = 25, /* Security key. */
350 ns_t_px = 26, /* X.400 mail mapping. */
351 ns_t_gpos = 27, /* Geographical position (withdrawn). */
352 ns_t_aaaa = 28, /* IPv6 Address. */
353 ns_t_loc = 29, /* Location Information. */
354 ns_t_nxt = 30, /* Next domain (security). */
355 ns_t_eid = 31, /* Endpoint identifier. */
356 ns_t_nimloc = 32, /* Nimrod Locator. */
357 ns_t_srv = 33, /* Server Selection. */
358 ns_t_atma = 34, /* ATM Address */
359 ns_t_naptr = 35, /* Naming Authority PoinTeR */
360 ns_t_kx = 36, /* Key Exchange */
361 ns_t_cert = 37, /* Certification record */
362 ns_t_a6 = 38, /* IPv6 address (deprecated) */
363 ns_t_dname = 39, /* Non-terminal DNAME (for IPv6) */
364 ns_t_sink = 40, /* Kitchen sink (experimentatl) */
365 ns_t_opt = 41, /* EDNS0 option (meta-RR) */
366 ns_t_apl = 42, /* Address prefix list (RFC 3123) */
367 ns_t_ds = 43, /* Delegation Signer */
368 ns_t_sshfp = 44, /* SSH Fingerprint */
369 ns_t_ipseckey = 45, /* IPSEC Key */
370 ns_t_rrsig = 46, /* RRset Signature */
371 ns_t_nsec = 47, /* Negative security */
372 ns_t_dnskey = 48, /* DNS Key */
373 ns_t_dhcid = 49, /* Dynamic host configuratin identifier */
374 ns_t_nsec3 = 50, /* Negative security type 3 */
375 ns_t_nsec3param = 51, /* Negative security type 3 parameters */
376 ns_t_hip = 55, /* Host Identity Protocol */
377 ns_t_spf = 99, /* Sender Policy Framework */
378 ns_t_tkey = 249, /* Transaction key */
379 ns_t_tsig = 250, /* Transaction signature. */
380 ns_t_ixfr = 251, /* Incremental zone transfer. */
381 ns_t_axfr = 252, /* Transfer zone of authority. */
382 ns_t_mailb = 253, /* Transfer mailbox records. */
383 ns_t_maila = 254, /* Transfer mail agent records. */
384 ns_t_any = 255, /* Wildcard match. */
385 ns_t_zxfr = 256, /* BIND-specific, nonstandard. */
386 ns_t_dlv = 32769, /* DNSSEC look-aside validatation. */
387 ns_t_max = 65536
388 } ns_type;
389
390 /* Exclusively a QTYPE? (not also an RTYPE) */
391 #define ns_t_qt_p(t) (ns_t_xfr_p(t) || (t) == ns_t_any || \
392 (t) == ns_t_mailb || (t) == ns_t_maila)
393 /* Some kind of meta-RR? (not a QTYPE, but also not an RTYPE) */
394 #define ns_t_mrr_p(t) ((t) == ns_t_tsig || (t) == ns_t_opt)
395 /* Exclusively an RTYPE? (not also a QTYPE or a meta-RR) */
396 #define ns_t_rr_p(t) (!ns_t_qt_p(t) && !ns_t_mrr_p(t))
397 #define ns_t_udp_p(t) ((t) != ns_t_axfr && (t) != ns_t_zxfr)
398 #define ns_t_xfr_p(t) ((t) == ns_t_axfr || (t) == ns_t_ixfr || \
399 (t) == ns_t_zxfr)
400
401 /*
402 * Values for class field
403 */
404 typedef enum __ns_class {
405 ns_c_invalid = 0, /* Cookie. */
406 ns_c_in = 1, /* Internet. */
407 ns_c_2 = 2, /* unallocated/unsupported. */
408 ns_c_chaos = 3, /* MIT Chaos-net. */
409 ns_c_hs = 4, /* MIT Hesiod. */
410 /* Query class values which do not appear in resource records */
411 ns_c_none = 254, /* for prereq. sections in update requests */
412 ns_c_any = 255, /* Wildcard match. */
413 ns_c_max = 65536
414 } ns_class;
415
416 /* DNSSEC constants. */
417
418 typedef enum __ns_key_types {
419 ns_kt_rsa = 1, /* key type RSA/MD5 */
420 ns_kt_dh = 2, /* Diffie Hellman */
421 ns_kt_dsa = 3, /* Digital Signature Standard (MANDATORY) */
422 ns_kt_private = 254 /* Private key type starts with OID */
423 } ns_key_types;
424
425 typedef enum __ns_cert_types {
426 cert_t_pkix = 1, /* PKIX (X.509v3) */
427 cert_t_spki = 2, /* SPKI */
428 cert_t_pgp = 3, /* PGP */
429 cert_t_url = 253, /* URL private type */
430 cert_t_oid = 254 /* OID private type */
431 } ns_cert_types;
432
433 /* Flags field of the KEY RR rdata. */
434 #define NS_KEY_TYPEMASK 0xC000 /* Mask for "type" bits */
435 #define NS_KEY_TYPE_AUTH_CONF 0x0000 /* Key usable for both */
436 #define NS_KEY_TYPE_CONF_ONLY 0x8000 /* Key usable for confidentiality */
437 #define NS_KEY_TYPE_AUTH_ONLY 0x4000 /* Key usable for authentication */
438 #define NS_KEY_TYPE_NO_KEY 0xC000 /* No key usable for either; no key */
439 /* The type bits can also be interpreted independently, as single bits: */
440 #define NS_KEY_NO_AUTH 0x8000 /* Key unusable for authentication */
441 #define NS_KEY_NO_CONF 0x4000 /* Key unusable for confidentiality */
442 #define NS_KEY_RESERVED2 0x2000 /* Security is *mandatory* if bit=0 */
443 #define NS_KEY_EXTENDED_FLAGS 0x1000 /* reserved - must be zero */
444 #define NS_KEY_RESERVED4 0x0800 /* reserved - must be zero */
445 #define NS_KEY_RESERVED5 0x0400 /* reserved - must be zero */
446 #define NS_KEY_NAME_TYPE 0x0300 /* these bits determine the type */
447 #define NS_KEY_NAME_USER 0x0000 /* key is assoc. with user */
448 #define NS_KEY_NAME_ENTITY 0x0200 /* key is assoc. with entity eg host */
449 #define NS_KEY_NAME_ZONE 0x0100 /* key is zone key */
450 #define NS_KEY_NAME_RESERVED 0x0300 /* reserved meaning */
451 #define NS_KEY_RESERVED8 0x0080 /* reserved - must be zero */
452 #define NS_KEY_RESERVED9 0x0040 /* reserved - must be zero */
453 #define NS_KEY_RESERVED10 0x0020 /* reserved - must be zero */
454 #define NS_KEY_RESERVED11 0x0010 /* reserved - must be zero */
455 #define NS_KEY_SIGNATORYMASK 0x000F /* key can sign RR's of same name */
456 #define NS_KEY_RESERVED_BITMASK (NS_KEY_RESERVED2 | \
457 NS_KEY_RESERVED4 | \
458 NS_KEY_RESERVED5 | \
459 NS_KEY_RESERVED8 | \
460 NS_KEY_RESERVED9 | \
461 NS_KEY_RESERVED10 | \
462 NS_KEY_RESERVED11)
463 #define NS_KEY_RESERVED_BITMASK2 0xFFFF /* no bits defined here */
464
465 /* The Algorithm field of the KEY and SIG RR's is an integer, {1..254} */
466 #define NS_ALG_MD5RSA 1 /* MD5 with RSA */
467 #define NS_ALG_DH 2 /* Diffie Hellman KEY */
468 #define NS_ALG_DSA 3 /* DSA KEY */
469 #define NS_ALG_DSS NS_ALG_DSA
470 #define NS_ALG_EXPIRE_ONLY 253 /* No alg, no security */
471 #define NS_ALG_PRIVATE_OID 254 /* Key begins with OID giving alg */
472
473 /* Protocol values */
474 /* value 0 is reserved */
475 #define NS_KEY_PROT_TLS 1
476 #define NS_KEY_PROT_EMAIL 2
477 #define NS_KEY_PROT_DNSSEC 3
478 #define NS_KEY_PROT_IPSEC 4
479 #define NS_KEY_PROT_ANY 255
480
481 /* Signatures */
482 #define NS_MD5RSA_MIN_BITS 512 /* Size of a mod or exp in bits */
483 #define NS_MD5RSA_MAX_BITS 4096
484 /* Total of binary mod and exp */
485 #define NS_MD5RSA_MAX_BYTES ((NS_MD5RSA_MAX_BITS+7/8)*2+3)
486 /* Max length of text sig block */
487 #define NS_MD5RSA_MAX_BASE64 (((NS_MD5RSA_MAX_BYTES+2)/3)*4)
488 #define NS_MD5RSA_MIN_SIZE ((NS_MD5RSA_MIN_BITS+7)/8)
489 #define NS_MD5RSA_MAX_SIZE ((NS_MD5RSA_MAX_BITS+7)/8)
490
491 #define NS_DSA_SIG_SIZE 41
492 #define NS_DSA_MIN_SIZE 213
493 #define NS_DSA_MAX_BYTES 405
494
495 /* Offsets into SIG record rdata to find various values */
496 #define NS_SIG_TYPE 0 /* Type flags */
497 #define NS_SIG_ALG 2 /* Algorithm */
498 #define NS_SIG_LABELS 3 /* How many labels in name */
499 #define NS_SIG_OTTL 4 /* Original TTL */
500 #define NS_SIG_EXPIR 8 /* Expiration time */
501 #define NS_SIG_SIGNED 12 /* Signature time */
502 #define NS_SIG_FOOT 16 /* Key footprint */
503 #define NS_SIG_SIGNER 18 /* Domain name of who signed it */
504
505 /* How RR types are represented as bit-flags in NXT records */
506 #define NS_NXT_BITS 8
507 #define NS_NXT_BIT_SET(n, p) \
508 (p[(n)/NS_NXT_BITS] |= (0x80>>((n)%NS_NXT_BITS)))
509 #define NS_NXT_BIT_CLEAR(n, p) \
510 (p[(n)/NS_NXT_BITS] &= ~(0x80>>((n)%NS_NXT_BITS)))
511 #define NS_NXT_BIT_ISSET(n, p) \
512 (p[(n)/NS_NXT_BITS] & (0x80>>((n)%NS_NXT_BITS)))
513 #define NS_NXT_MAX 127
514
515 /*
516 * EDNS0 extended flags, host order.
517 */
518 #define NS_OPT_DNSSEC_OK 0x8000U
519 #define NS_OPT_NSID 3
520
521 /*
522 * Inline versions of get/put short/long. Pointer is advanced.
523 */
524 #define NS_GET16(s, cp) do { \
525 register const uchar_t *t_cp = (const uchar_t *)(cp); \
526 (s) = ((uint16_t)t_cp[0] << 8) \
527 | ((uint16_t)t_cp[1]) \
528 ; \
529 (cp) += NS_INT16SZ; \
530 } while (0)
531
532 #define NS_GET32(l, cp) do { \
533 register const uchar_t *t_cp = (const uchar_t *)(cp); \
534 (l) = ((uint32_t)t_cp[0] << 24) \
535 | ((uint32_t)t_cp[1] << 16) \
536 | ((uint32_t)t_cp[2] << 8) \
537 | ((uint32_t)t_cp[3]) \
538 ; \
539 (cp) += NS_INT32SZ; \
540 } while (0)
541
542 #define NS_PUT16(s, cp) do { \
543 register uint16_t t_s = (uint16_t)(s); \
544 register uchar_t *t_cp = (uchar_t *)(cp); \
545 *t_cp++ = t_s >> 8; \
546 *t_cp = t_s; \
547 (cp) += NS_INT16SZ; \
548 } while (0)
549
550 #define NS_PUT32(l, cp) do { \
551 register uint32_t t_l = (uint32_t)(l); \
552 register uchar_t *t_cp = (uchar_t *)(cp); \
553 *t_cp++ = t_l >> 24; \
554 *t_cp++ = t_l >> 16; \
555 *t_cp++ = t_l >> 8; \
556 *t_cp = t_l; \
557 (cp) += NS_INT32SZ; \
558 } while (0)
559
560 /*
561 * ANSI C identifier hiding.
562 */
563 #define ns_msg_getflag __ns_msg_getflag
564 #define ns_get16 __ns_get16
565 #define ns_get32 __ns_get32
566 #define ns_put16 __ns_put16
567 #define ns_put32 __ns_put32
568 #define ns_initparse __ns_initparse
569 #define ns_skiprr __ns_skiprr
570 #define ns_parserr __ns_parserr
571 #define ns_parserr2 __ns_parserr2
572 #define ns_sprintrr __ns_sprintrr
573 #define ns_sprintrrf __ns_sprintrrf
574 #define ns_format_ttl __ns_format_ttl
575 #define ns_parse_ttl __ns_parse_ttl
576 #define ns_datetosecs __ns_datetosecs
577 #define ns_name_ntol __ns_name_ntol
578 #define ns_name_ntop __ns_name_ntop
579 #define ns_name_pton __ns_name_pton
580 #define ns_name_pton2 __ns_name_pton2
581 #define ns_name_unpack __ns_name_unpack
582 #define ns_name_pack __ns_name_pack
583 #define ns_name_compress __ns_name_compress
584 #define ns_name_uncompress __ns_name_uncompress
585 #define ns_name_skip __ns_name_skip
586 #define ns_name_rollback __ns_name_rollback
587 #define ns_name_length __ns_name_length
588 #define ns_name_eq __ns_name_eq
589 #define ns_name_owned __ns_name_owned
590 #define ns_name_map __ns_name_map
591 #define ns_name_labels __ns_name_labels
592 #define ns_sign __ns_sign
593 #define ns_sign2 __ns_sign2
594 #define ns_sign_tcp __ns_sign_tcp
595 #define ns_sign_tcp2 __ns_sign_tcp2
596 #define ns_sign_tcp_init __ns_sign_tcp_init
597 #define ns_find_tsig __ns_find_tsig
598 #define ns_verify __ns_verify
599 #define ns_verify_tcp __ns_verify_tcp
600 #define ns_verify_tcp_init __ns_verify_tcp_init
601 #define ns_samedomain __ns_samedomain
602 #define ns_subdomain __ns_subdomain
603 #define ns_makecanon __ns_makecanon
604 #define ns_samename __ns_samename
605 #define ns_newmsg_init __ns_newmsg_init
606 #define ns_newmsg_copy __ns_newmsg_copy
607 #define ns_newmsg_id __ns_newmsg_id
608 #define ns_newmsg_flag __ns_newmsg_flag
609 #define ns_newmsg_q __ns_newmsg_q
610 #define ns_newmsg_rr __ns_newmsg_rr
611 #define ns_newmsg_done __ns_newmsg_done
612 #define ns_rdata_unpack __ns_rdata_unpack
613 #define ns_rdata_equal __ns_rdata_equal
614 #define ns_rdata_refers __ns_rdata_refers
615
616 int ns_msg_getflag(ns_msg, int);
617 uint_t ns_get16(const uchar_t *);
618 ulong_t ns_get32(const uchar_t *);
619 void ns_put16(uint_t, uchar_t *);
620 void ns_put32(ulong_t, uchar_t *);
621 int ns_initparse(const uchar_t *, int, ns_msg *);
622 int ns_skiprr(const uchar_t *, const uchar_t *, ns_sect, int);
623 int ns_parserr(ns_msg *, ns_sect, int, ns_rr *);
624 int ns_parserr2(ns_msg *, ns_sect, int, ns_rr2 *);
625 int ns_sprintrr(const ns_msg *, const ns_rr *,
626 const char *, const char *, char *, size_t);
627 int ns_sprintrrf(const uchar_t *, size_t, const char *,
628 ns_class, ns_type, ulong_t, const uchar_t *,
629 size_t, const char *, const char *,
630 char *, size_t);
631 int ns_format_ttl(ulong_t, char *, size_t);
632 int ns_parse_ttl(const char *, ulong_t *);
633 uint32_t ns_datetosecs(const char *cp, int *errp);
634 int ns_name_ntol(const uchar_t *, uchar_t *, size_t);
635 int ns_name_ntop(const uchar_t *, char *, size_t);
636 int ns_name_pton(const char *, uchar_t *, size_t);
637 int ns_name_pton2(const char *, uchar_t *, size_t, size_t *);
638 int ns_name_unpack(const uchar_t *, const uchar_t *,
639 const uchar_t *, uchar_t *, size_t);
640 int ns_name_pack(const uchar_t *, uchar_t *, int,
641 const uchar_t **, const uchar_t **);
642 int ns_name_uncompress(const uchar_t *, const uchar_t *,
643 const uchar_t *, char *, size_t);
644 int ns_name_compress(const char *, uchar_t *, size_t,
645 const uchar_t **, const uchar_t **);
646 int ns_name_skip(const uchar_t **, const uchar_t *);
647 void ns_name_rollback(const uchar_t *, const uchar_t **,
648 const uchar_t **);
649 ssize_t ns_name_length(ns_nname_ct, size_t);
650 int ns_name_eq(ns_nname_ct, size_t, ns_nname_ct, size_t);
651 int ns_name_owned(ns_namemap_ct, int, ns_namemap_ct, int);
652 int ns_name_map(ns_nname_ct, size_t, ns_namemap_t, int);
653 int ns_name_labels(ns_nname_ct, size_t);
654 int ns_sign(uchar_t *, int *, int, int, void *,
655 const uchar_t *, int, uchar_t *, int *, time_t);
656 int ns_sign2(uchar_t *, int *, int, int, void *,
657 const uchar_t *, int, uchar_t *, int *, time_t,
658 uchar_t **, uchar_t **);
659 int ns_sign_tcp(uchar_t *, int *, int, int,
660 ns_tcp_tsig_state *, int);
661 int ns_sign_tcp2(uchar_t *, int *, int, int,
662 ns_tcp_tsig_state *, int,
663 uchar_t **, uchar_t **);
664 int ns_sign_tcp_init(void *, const uchar_t *, int,
665 ns_tcp_tsig_state *);
666 uchar_t *ns_find_tsig(uchar_t *, uchar_t *);
667 int ns_verify(uchar_t *, int *, void *,
668 const uchar_t *, int, uchar_t *, int *,
669 time_t *, int);
670 int ns_verify_tcp(uchar_t *, int *, ns_tcp_tsig_state *, int);
671 int ns_verify_tcp_init(void *, const uchar_t *, int,
672 ns_tcp_tsig_state *);
673 int ns_samedomain(const char *, const char *);
674 int ns_subdomain(const char *, const char *);
675 int ns_makecanon(const char *, char *, size_t);
676 int ns_samename(const char *, const char *);
677 int ns_newmsg_init(uchar_t *buffer, size_t bufsiz, ns_newmsg *);
678 int ns_newmsg_copy(ns_newmsg *, ns_msg *);
679 void ns_newmsg_id(ns_newmsg *handle, uint16_t id);
680 void ns_newmsg_flag(ns_newmsg *handle, ns_flag flag, uint_t value);
681 int ns_newmsg_q(ns_newmsg *handle, ns_nname_ct qname,
682 ns_type qtype, ns_class qclass);
683 int ns_newmsg_rr(ns_newmsg *handle, ns_sect sect,
684 ns_nname_ct name, ns_type type,
685 ns_class rr_class, uint32_t ttl,
686 uint16_t rdlen, const uchar_t *rdata);
687 size_t ns_newmsg_done(ns_newmsg *handle);
688 ssize_t ns_rdata_unpack(const uchar_t *, const uchar_t *, ns_type,
689 const uchar_t *, size_t, uchar_t *, size_t);
690 int ns_rdata_equal(ns_type, const uchar_t *, size_t,
691 const uchar_t *, size_t);
692 int ns_rdata_refers(ns_type,
693 const uchar_t *, size_t,
694 const uchar_t *);
695
696 #ifdef BIND_4_COMPAT
697 #include <arpa/nameser_compat.h>
698 #endif
699
700 #ifdef __cplusplus
701 }
702 #endif
703
704 #endif /* !_ARPA_NAMESER_H */