1 | /* |
2 | * Copyright (c) 1983, 1989, 1993 |
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 | * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC") |
32 | * Copyright (c) 1996-1999 by Internet Software Consortium. |
33 | * |
34 | * Permission to use, copy, modify, and distribute this software for any |
35 | * purpose with or without fee is hereby granted, provided that the above |
36 | * copyright notice and this permission notice appear in all copies. |
37 | * |
38 | * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS |
39 | * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES |
40 | * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE |
41 | * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL |
42 | * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR |
43 | * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS |
44 | * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS |
45 | * SOFTWARE. |
46 | */ |
47 | |
48 | /* |
49 | * $BINDId: nameser.h,v 8.37 2000/03/30 21:16:49 vixie Exp $ |
50 | */ |
51 | |
52 | #ifndef _ARPA_NAMESER_H_ |
53 | #define _ARPA_NAMESER_H_ |
54 | |
55 | /*! \file */ |
56 | |
57 | #define BIND_4_COMPAT |
58 | |
59 | #include <sys/param.h> |
60 | #if (!defined(BSD)) || (BSD < 199306) |
61 | # include <sys/bitypes.h> |
62 | #else |
63 | # include <sys/types.h> |
64 | #endif |
65 | #include <sys/cdefs.h> |
66 | |
67 | /*% |
68 | * Revision information. This is the release date in YYYYMMDD format. |
69 | * It can change every day so the right thing to do with it is use it |
70 | * in preprocessor commands such as "#if (__NAMESER > 19931104)". Do not |
71 | * compare for equality; rather, use it to determine whether your libbind.a |
72 | * contains a new enough lib/nameser/ to support the feature you need. |
73 | */ |
74 | |
75 | #define __NAMESER 19991006 /*%< New interface version stamp. */ |
76 | /* |
77 | * Define constants based on RFC 883, RFC 1034, RFC 1035 |
78 | */ |
79 | #define NS_PACKETSZ 512 /*%< default UDP packet size */ |
80 | #define NS_MAXDNAME 1025 /*%< maximum domain name */ |
81 | #define NS_MAXMSG 65535 /*%< maximum message size */ |
82 | #define NS_MAXCDNAME 255 /*%< maximum compressed domain name */ |
83 | #define NS_MAXLABEL 63 /*%< maximum length of domain label */ |
84 | #define NS_HFIXEDSZ 12 /*%< #/bytes of fixed data in header */ |
85 | #define NS_QFIXEDSZ 4 /*%< #/bytes of fixed data in query */ |
86 | #define NS_RRFIXEDSZ 10 /*%< #/bytes of fixed data in r record */ |
87 | #define NS_INT32SZ 4 /*%< #/bytes of data in a u_int32_t */ |
88 | #define NS_INT16SZ 2 /*%< #/bytes of data in a u_int16_t */ |
89 | #define NS_INT8SZ 1 /*%< #/bytes of data in a u_int8_t */ |
90 | #define NS_INADDRSZ 4 /*%< IPv4 T_A */ |
91 | #define NS_IN6ADDRSZ 16 /*%< IPv6 T_AAAA */ |
92 | #define NS_CMPRSFLGS 0xc0 /*%< Flag bits indicating name compression. */ |
93 | #define NS_DEFAULTPORT 53 /*%< For both TCP and UDP. */ |
94 | /* |
95 | * These can be expanded with synonyms, just keep ns_parse.c:ns_parserecord() |
96 | * in synch with it. |
97 | */ |
98 | typedef enum __ns_sect { |
99 | ns_s_qd = 0, /*%< Query: Question. */ |
100 | ns_s_zn = 0, /*%< Update: Zone. */ |
101 | ns_s_an = 1, /*%< Query: Answer. */ |
102 | ns_s_pr = 1, /*%< Update: Prerequisites. */ |
103 | ns_s_ns = 2, /*%< Query: Name servers. */ |
104 | ns_s_ud = 2, /*%< Update: Update. */ |
105 | ns_s_ar = 3, /*%< Query|Update: Additional records. */ |
106 | ns_s_max = 4 |
107 | } ns_sect; |
108 | |
109 | /*% |
110 | * This is a message handle. It is caller allocated and has no dynamic data. |
111 | * This structure is intended to be opaque to all but ns_parse.c, thus the |
112 | * leading _'s on the member names. Use the accessor functions, not the _'s. |
113 | */ |
114 | typedef struct __ns_msg { |
115 | const u_char *_msg, *_eom; |
116 | u_int16_t _id, _flags, _counts[ns_s_max]; |
117 | const u_char *_sections[ns_s_max]; |
118 | ns_sect _sect; |
119 | int _rrnum; |
120 | const u_char *_msg_ptr; |
121 | } ns_msg; |
122 | |
123 | /* Private data structure - do not use from outside library. */ |
124 | struct _ns_flagdata { int mask, shift; }; |
125 | extern const struct _ns_flagdata _ns_flagdata[]; |
126 | |
127 | /* Accessor macros - this is part of the public interface. */ |
128 | |
129 | #define ns_msg_id(handle) ((handle)._id + 0) |
130 | #define ns_msg_base(handle) ((handle)._msg + 0) |
131 | #define ns_msg_end(handle) ((handle)._eom + 0) |
132 | #define ns_msg_size(handle) ((handle)._eom - (handle)._msg) |
133 | #define ns_msg_count(handle, section) ((handle)._counts[section] + 0) |
134 | |
135 | /*% |
136 | * This is a parsed record. It is caller allocated and has no dynamic data. |
137 | */ |
138 | typedef struct __ns_rr { |
139 | char name[NS_MAXDNAME]; |
140 | u_int16_t type; |
141 | u_int16_t rr_class; |
142 | u_int32_t ttl; |
143 | u_int16_t rdlength; |
144 | const u_char * rdata; |
145 | } ns_rr; |
146 | |
147 | /* Accessor macros - this is part of the public interface. */ |
148 | #define ns_rr_name(rr) (((rr).name[0] != '\0') ? (rr).name : ".") |
149 | #define ns_rr_type(rr) ((ns_type)((rr).type + 0)) |
150 | #define ns_rr_class(rr) ((ns_class)((rr).rr_class + 0)) |
151 | #define ns_rr_ttl(rr) ((rr).ttl + 0) |
152 | #define ns_rr_rdlen(rr) ((rr).rdlength + 0) |
153 | #define ns_rr_rdata(rr) ((rr).rdata + 0) |
154 | |
155 | /*% |
156 | * These don't have to be in the same order as in the packet flags word, |
157 | * and they can even overlap in some cases, but they will need to be kept |
158 | * in synch with ns_parse.c:ns_flagdata[]. |
159 | */ |
160 | typedef enum __ns_flag { |
161 | ns_f_qr, /*%< Question/Response. */ |
162 | ns_f_opcode, /*%< Operation code. */ |
163 | ns_f_aa, /*%< Authoritative Answer. */ |
164 | ns_f_tc, /*%< Truncation occurred. */ |
165 | ns_f_rd, /*%< Recursion Desired. */ |
166 | ns_f_ra, /*%< Recursion Available. */ |
167 | ns_f_z, /*%< MBZ. */ |
168 | ns_f_ad, /*%< Authentic Data (DNSSEC). */ |
169 | ns_f_cd, /*%< Checking Disabled (DNSSEC). */ |
170 | ns_f_rcode, /*%< Response code. */ |
171 | ns_f_max |
172 | } ns_flag; |
173 | |
174 | /*% |
175 | * Currently defined opcodes. |
176 | */ |
177 | typedef enum __ns_opcode { |
178 | ns_o_query = 0, /*%< Standard query. */ |
179 | ns_o_iquery = 1, /*%< Inverse query (deprecated/unsupported). */ |
180 | ns_o_status = 2, /*%< Name server status query (unsupported). */ |
181 | /* Opcode 3 is undefined/reserved. */ |
182 | ns_o_notify = 4, /*%< Zone change notification. */ |
183 | ns_o_update = 5, /*%< Zone update message. */ |
184 | ns_o_max = 6 |
185 | } ns_opcode; |
186 | |
187 | /*% |
188 | * Currently defined response codes. |
189 | */ |
190 | typedef enum __ns_rcode { |
191 | ns_r_noerror = 0, /*%< No error occurred. */ |
192 | ns_r_formerr = 1, /*%< Format error. */ |
193 | ns_r_servfail = 2, /*%< Server failure. */ |
194 | ns_r_nxdomain = 3, /*%< Name error. */ |
195 | ns_r_notimpl = 4, /*%< Unimplemented. */ |
196 | ns_r_refused = 5, /*%< Operation refused. */ |
197 | /* these are for BIND_UPDATE */ |
198 | ns_r_yxdomain = 6, /*%< Name exists */ |
199 | ns_r_yxrrset = 7, /*%< RRset exists */ |
200 | ns_r_nxrrset = 8, /*%< RRset does not exist */ |
201 | ns_r_notauth = 9, /*%< Not authoritative for zone */ |
202 | ns_r_notzone = 10, /*%< Zone of record different from zone section */ |
203 | ns_r_max = 11, |
204 | /* The following are EDNS extended rcodes */ |
205 | ns_r_badvers = 16, |
206 | /* The following are TSIG errors */ |
207 | ns_r_badsig = 16, |
208 | ns_r_badkey = 17, |
209 | ns_r_badtime = 18 |
210 | } ns_rcode; |
211 | |
212 | /* BIND_UPDATE */ |
213 | typedef enum __ns_update_operation { |
214 | ns_uop_delete = 0, |
215 | ns_uop_add = 1, |
216 | ns_uop_max = 2 |
217 | } ns_update_operation; |
218 | |
219 | /*% |
220 | * This structure is used for TSIG authenticated messages |
221 | */ |
222 | struct ns_tsig_key { |
223 | char name[NS_MAXDNAME], alg[NS_MAXDNAME]; |
224 | unsigned char *data; |
225 | int len; |
226 | }; |
227 | typedef struct ns_tsig_key ns_tsig_key; |
228 | |
229 | /*% |
230 | * This structure is used for TSIG authenticated TCP messages |
231 | */ |
232 | struct ns_tcp_tsig_state { |
233 | int counter; |
234 | struct dst_key *key; |
235 | void *ctx; |
236 | unsigned char sig[NS_PACKETSZ]; |
237 | int siglen; |
238 | }; |
239 | typedef struct ns_tcp_tsig_state ns_tcp_tsig_state; |
240 | |
241 | #define NS_TSIG_FUDGE 300 |
242 | #define NS_TSIG_TCP_COUNT 100 |
243 | #define NS_TSIG_ALG_HMAC_MD5 "HMAC-MD5.SIG-ALG.REG.INT" |
244 | |
245 | #define NS_TSIG_ERROR_NO_TSIG -10 |
246 | #define NS_TSIG_ERROR_NO_SPACE -11 |
247 | #define NS_TSIG_ERROR_FORMERR -12 |
248 | |
249 | /*% |
250 | * Currently defined type values for resources and queries. |
251 | */ |
252 | typedef enum __ns_type { |
253 | ns_t_invalid = 0, /*%< Cookie. */ |
254 | ns_t_a = 1, /*%< Host address. */ |
255 | ns_t_ns = 2, /*%< Authoritative server. */ |
256 | ns_t_md = 3, /*%< Mail destination. */ |
257 | ns_t_mf = 4, /*%< Mail forwarder. */ |
258 | ns_t_cname = 5, /*%< Canonical name. */ |
259 | ns_t_soa = 6, /*%< Start of authority zone. */ |
260 | ns_t_mb = 7, /*%< Mailbox domain name. */ |
261 | ns_t_mg = 8, /*%< Mail group member. */ |
262 | ns_t_mr = 9, /*%< Mail rename name. */ |
263 | ns_t_null = 10, /*%< Null resource record. */ |
264 | ns_t_wks = 11, /*%< Well known service. */ |
265 | ns_t_ptr = 12, /*%< Domain name pointer. */ |
266 | ns_t_hinfo = 13, /*%< Host information. */ |
267 | ns_t_minfo = 14, /*%< Mailbox information. */ |
268 | ns_t_mx = 15, /*%< Mail routing information. */ |
269 | ns_t_txt = 16, /*%< Text strings. */ |
270 | ns_t_rp = 17, /*%< Responsible person. */ |
271 | ns_t_afsdb = 18, /*%< AFS cell database. */ |
272 | ns_t_x25 = 19, /*%< X_25 calling address. */ |
273 | ns_t_isdn = 20, /*%< ISDN calling address. */ |
274 | ns_t_rt = 21, /*%< Router. */ |
275 | ns_t_nsap = 22, /*%< NSAP address. */ |
276 | ns_t_nsap_ptr = 23, /*%< Reverse NSAP lookup (deprecated). */ |
277 | ns_t_sig = 24, /*%< Security signature. */ |
278 | ns_t_key = 25, /*%< Security key. */ |
279 | ns_t_px = 26, /*%< X.400 mail mapping. */ |
280 | ns_t_gpos = 27, /*%< Geographical position (withdrawn). */ |
281 | ns_t_aaaa = 28, /*%< Ip6 Address. */ |
282 | ns_t_loc = 29, /*%< Location Information. */ |
283 | ns_t_nxt = 30, /*%< Next domain (security). */ |
284 | ns_t_eid = 31, /*%< Endpoint identifier. */ |
285 | ns_t_nimloc = 32, /*%< Nimrod Locator. */ |
286 | ns_t_srv = 33, /*%< Server Selection. */ |
287 | ns_t_atma = 34, /*%< ATM Address */ |
288 | ns_t_naptr = 35, /*%< Naming Authority PoinTeR */ |
289 | ns_t_kx = 36, /*%< Key Exchange */ |
290 | ns_t_cert = 37, /*%< Certification record */ |
291 | ns_t_a6 = 38, /*%< IPv6 address (deprecated, use ns_t_aaaa) */ |
292 | ns_t_dname = 39, /*%< Non-terminal DNAME (for IPv6) */ |
293 | ns_t_sink = 40, /*%< Kitchen sink (experimentatl) */ |
294 | ns_t_opt = 41, /*%< EDNS0 option (meta-RR) */ |
295 | ns_t_apl = 42, /*%< Address prefix list (RFC3123) */ |
296 | ns_t_tkey = 249, /*%< Transaction key */ |
297 | ns_t_tsig = 250, /*%< Transaction signature. */ |
298 | ns_t_ixfr = 251, /*%< Incremental zone transfer. */ |
299 | ns_t_axfr = 252, /*%< Transfer zone of authority. */ |
300 | ns_t_mailb = 253, /*%< Transfer mailbox records. */ |
301 | ns_t_maila = 254, /*%< Transfer mail agent records. */ |
302 | ns_t_any = 255, /*%< Wildcard match. */ |
303 | ns_t_zxfr = 256, /*%< BIND-specific, nonstandard. */ |
304 | ns_t_max = 65536 |
305 | } ns_type; |
306 | |
307 | /* Exclusively a QTYPE? (not also an RTYPE) */ |
308 | #define ns_t_qt_p(t) (ns_t_xfr_p(t) || (t) == ns_t_any || \ |
309 | (t) == ns_t_mailb || (t) == ns_t_maila) |
310 | /* Some kind of meta-RR? (not a QTYPE, but also not an RTYPE) */ |
311 | #define ns_t_mrr_p(t) ((t) == ns_t_tsig || (t) == ns_t_opt) |
312 | /* Exclusively an RTYPE? (not also a QTYPE or a meta-RR) */ |
313 | #define ns_t_rr_p(t) (!ns_t_qt_p(t) && !ns_t_mrr_p(t)) |
314 | #define ns_t_udp_p(t) ((t) != ns_t_axfr && (t) != ns_t_zxfr) |
315 | #define ns_t_xfr_p(t) ((t) == ns_t_axfr || (t) == ns_t_ixfr || \ |
316 | (t) == ns_t_zxfr) |
317 | |
318 | /*% |
319 | * Values for class field |
320 | */ |
321 | typedef enum __ns_class { |
322 | ns_c_invalid = 0, /*%< Cookie. */ |
323 | ns_c_in = 1, /*%< Internet. */ |
324 | ns_c_2 = 2, /*%< unallocated/unsupported. */ |
325 | ns_c_chaos = 3, /*%< MIT Chaos-net. */ |
326 | ns_c_hs = 4, /*%< MIT Hesiod. */ |
327 | /* Query class values which do not appear in resource records */ |
328 | ns_c_none = 254, /*%< for prereq. sections in update requests */ |
329 | ns_c_any = 255, /*%< Wildcard match. */ |
330 | ns_c_max = 65536 |
331 | } ns_class; |
332 | |
333 | /* DNSSEC constants. */ |
334 | |
335 | typedef enum __ns_key_types { |
336 | ns_kt_rsa = 1, /*%< key type RSA/MD5 */ |
337 | ns_kt_dh = 2, /*%< Diffie Hellman */ |
338 | ns_kt_dsa = 3, /*%< Digital Signature Standard (MANDATORY) */ |
339 | ns_kt_private = 254 /*%< Private key type starts with OID */ |
340 | } ns_key_types; |
341 | |
342 | typedef enum __ns_cert_types { |
343 | cert_t_pkix = 1, /*%< PKIX (X.509v3) */ |
344 | cert_t_spki = 2, /*%< SPKI */ |
345 | cert_t_pgp = 3, /*%< PGP */ |
346 | cert_t_url = 253, /*%< URL private type */ |
347 | cert_t_oid = 254 /*%< OID private type */ |
348 | } ns_cert_types; |
349 | |
350 | /* Flags field of the KEY RR rdata. */ |
351 | #define NS_KEY_TYPEMASK 0xC000 /*%< Mask for "type" bits */ |
352 | #define NS_KEY_TYPE_AUTH_CONF 0x0000 /*%< Key usable for both */ |
353 | #define NS_KEY_TYPE_CONF_ONLY 0x8000 /*%< Key usable for confidentiality */ |
354 | #define NS_KEY_TYPE_AUTH_ONLY 0x4000 /*%< Key usable for authentication */ |
355 | #define NS_KEY_TYPE_NO_KEY 0xC000 /*%< No key usable for either; no key */ |
356 | /* The type bits can also be interpreted independently, as single bits: */ |
357 | #define NS_KEY_NO_AUTH 0x8000 /*%< Key unusable for authentication */ |
358 | #define NS_KEY_NO_CONF 0x4000 /*%< Key unusable for confidentiality */ |
359 | #define NS_KEY_RESERVED2 0x2000 /* Security is *mandatory* if bit=0 */ |
360 | #define NS_KEY_EXTENDED_FLAGS 0x1000 /*%< reserved - must be zero */ |
361 | #define NS_KEY_RESERVED4 0x0800 /*%< reserved - must be zero */ |
362 | #define NS_KEY_RESERVED5 0x0400 /*%< reserved - must be zero */ |
363 | #define NS_KEY_NAME_TYPE 0x0300 /*%< these bits determine the type */ |
364 | #define NS_KEY_NAME_USER 0x0000 /*%< key is assoc. with user */ |
365 | #define NS_KEY_NAME_ENTITY 0x0200 /*%< key is assoc. with entity eg host */ |
366 | #define NS_KEY_NAME_ZONE 0x0100 /*%< key is zone key */ |
367 | #define NS_KEY_NAME_RESERVED 0x0300 /*%< reserved meaning */ |
368 | #define NS_KEY_RESERVED8 0x0080 /*%< reserved - must be zero */ |
369 | #define NS_KEY_RESERVED9 0x0040 /*%< reserved - must be zero */ |
370 | #define NS_KEY_RESERVED10 0x0020 /*%< reserved - must be zero */ |
371 | #define NS_KEY_RESERVED11 0x0010 /*%< reserved - must be zero */ |
372 | #define NS_KEY_SIGNATORYMASK 0x000F /*%< key can sign RR's of same name */ |
373 | #define NS_KEY_RESERVED_BITMASK ( NS_KEY_RESERVED2 | \ |
374 | NS_KEY_RESERVED4 | \ |
375 | NS_KEY_RESERVED5 | \ |
376 | NS_KEY_RESERVED8 | \ |
377 | NS_KEY_RESERVED9 | \ |
378 | NS_KEY_RESERVED10 | \ |
379 | NS_KEY_RESERVED11 ) |
380 | #define NS_KEY_RESERVED_BITMASK2 0xFFFF /*%< no bits defined here */ |
381 | /* The Algorithm field of the KEY and SIG RR's is an integer, {1..254} */ |
382 | #define NS_ALG_MD5RSA 1 /*%< MD5 with RSA */ |
383 | #define NS_ALG_DH 2 /*%< Diffie Hellman KEY */ |
384 | #define NS_ALG_DSA 3 /*%< DSA KEY */ |
385 | #define NS_ALG_DSS NS_ALG_DSA |
386 | #define NS_ALG_EXPIRE_ONLY 253 /*%< No alg, no security */ |
387 | #define NS_ALG_PRIVATE_OID 254 /*%< Key begins with OID giving alg */ |
388 | /* Protocol values */ |
389 | /* value 0 is reserved */ |
390 | #define NS_KEY_PROT_TLS 1 |
391 | #define NS_KEY_PROT_EMAIL 2 |
392 | #define NS_KEY_PROT_DNSSEC 3 |
393 | #define NS_KEY_PROT_IPSEC 4 |
394 | #define NS_KEY_PROT_ANY 255 |
395 | |
396 | /* Signatures */ |
397 | #define NS_MD5RSA_MIN_BITS 512 /*%< Size of a mod or exp in bits */ |
398 | #define NS_MD5RSA_MAX_BITS 4096 |
399 | /* Total of binary mod and exp */ |
400 | #define NS_MD5RSA_MAX_BYTES ((NS_MD5RSA_MAX_BITS+7/8)*2+3) |
401 | /* Max length of text sig block */ |
402 | #define NS_MD5RSA_MAX_BASE64 (((NS_MD5RSA_MAX_BYTES+2)/3)*4) |
403 | #define NS_MD5RSA_MIN_SIZE ((NS_MD5RSA_MIN_BITS+7)/8) |
404 | #define NS_MD5RSA_MAX_SIZE ((NS_MD5RSA_MAX_BITS+7)/8) |
405 | |
406 | #define NS_DSA_SIG_SIZE 41 |
407 | #define NS_DSA_MIN_SIZE 213 |
408 | #define NS_DSA_MAX_BYTES 405 |
409 | |
410 | /* Offsets into SIG record rdata to find various values */ |
411 | #define NS_SIG_TYPE 0 /*%< Type flags */ |
412 | #define NS_SIG_ALG 2 /*%< Algorithm */ |
413 | #define NS_SIG_LABELS 3 /*%< How many labels in name */ |
414 | #define NS_SIG_OTTL 4 /*%< Original TTL */ |
415 | #define NS_SIG_EXPIR 8 /*%< Expiration time */ |
416 | #define NS_SIG_SIGNED 12 /*%< Signature time */ |
417 | #define 16 /*%< Key footprint */ |
418 | #define NS_SIG_SIGNER 18 /*%< Domain name of who signed it */ |
419 | /* How RR types are represented as bit-flags in NXT records */ |
420 | #define NS_NXT_BITS 8 |
421 | #define NS_NXT_BIT_SET( n,p) (p[(n)/NS_NXT_BITS] |= (0x80>>((n)%NS_NXT_BITS))) |
422 | #define NS_NXT_BIT_CLEAR(n,p) (p[(n)/NS_NXT_BITS] &= ~(0x80>>((n)%NS_NXT_BITS))) |
423 | #define NS_NXT_BIT_ISSET(n,p) (p[(n)/NS_NXT_BITS] & (0x80>>((n)%NS_NXT_BITS))) |
424 | #define NS_NXT_MAX 127 |
425 | |
426 | /*% |
427 | * EDNS0 extended flags and option codes, host order. |
428 | */ |
429 | #define NS_OPT_DNSSEC_OK 0x8000U |
430 | #define NS_OPT_NSID 3 |
431 | |
432 | /*% |
433 | * Inline versions of get/put short/long. Pointer is advanced. |
434 | */ |
435 | #define NS_GET16(s, cp) do { \ |
436 | const u_char *t_cp = (const u_char *)(cp); \ |
437 | (s) = ((u_int16_t)t_cp[0] << 8) \ |
438 | | ((u_int16_t)t_cp[1]) \ |
439 | ; \ |
440 | (cp) += NS_INT16SZ; \ |
441 | } while (0) |
442 | |
443 | #define NS_GET32(l, cp) do { \ |
444 | const u_char *t_cp = (const u_char *)(cp); \ |
445 | (l) = ((u_int32_t)t_cp[0] << 24) \ |
446 | | ((u_int32_t)t_cp[1] << 16) \ |
447 | | ((u_int32_t)t_cp[2] << 8) \ |
448 | | ((u_int32_t)t_cp[3]) \ |
449 | ; \ |
450 | (cp) += NS_INT32SZ; \ |
451 | } while (0) |
452 | |
453 | #define NS_PUT16(s, cp) do { \ |
454 | u_int16_t t_s = (u_int16_t)(s); \ |
455 | u_char *t_cp = (u_char *)(cp); \ |
456 | *t_cp++ = t_s >> 8; \ |
457 | *t_cp = t_s; \ |
458 | (cp) += NS_INT16SZ; \ |
459 | } while (0) |
460 | |
461 | #define NS_PUT32(l, cp) do { \ |
462 | u_int32_t t_l = (u_int32_t)(l); \ |
463 | u_char *t_cp = (u_char *)(cp); \ |
464 | *t_cp++ = t_l >> 24; \ |
465 | *t_cp++ = t_l >> 16; \ |
466 | *t_cp++ = t_l >> 8; \ |
467 | *t_cp = t_l; \ |
468 | (cp) += NS_INT32SZ; \ |
469 | } while (0) |
470 | |
471 | __BEGIN_DECLS |
472 | int ns_msg_getflag (ns_msg, int) __THROW; |
473 | u_int ns_get16 (const u_char *) __THROW; |
474 | u_long ns_get32 (const u_char *) __THROW; |
475 | void ns_put16 (u_int, u_char *) __THROW; |
476 | void ns_put32 (u_long, u_char *) __THROW; |
477 | int ns_initparse (const u_char *, int, ns_msg *) __THROW; |
478 | int ns_skiprr (const u_char *, const u_char *, ns_sect, int) |
479 | __THROW; |
480 | int ns_parserr (ns_msg *, ns_sect, int, ns_rr *) __THROW; |
481 | int ns_sprintrr (const ns_msg *, const ns_rr *, |
482 | const char *, const char *, char *, size_t) |
483 | __THROW; |
484 | int ns_sprintrrf (const u_char *, size_t, const char *, |
485 | ns_class, ns_type, u_long, const u_char *, |
486 | size_t, const char *, const char *, |
487 | char *, size_t) __THROW; |
488 | int ns_format_ttl (u_long, char *, size_t) __THROW; |
489 | int ns_parse_ttl (const char *, u_long *) __THROW; |
490 | u_int32_t ns_datetosecs (const char *, int *) __THROW; |
491 | int ns_name_ntol (const u_char *, u_char *, size_t) __THROW; |
492 | int ns_name_ntop (const u_char *, char *, size_t) __THROW; |
493 | int ns_name_pton (const char *, u_char *, size_t) __THROW; |
494 | int ns_name_unpack (const u_char *, const u_char *, |
495 | const u_char *, u_char *, size_t) __THROW; |
496 | int ns_name_pack (const u_char *, u_char *, int, |
497 | const u_char **, const u_char **) __THROW; |
498 | int ns_name_uncompress (const u_char *, const u_char *, |
499 | const u_char *, char *, size_t) __THROW; |
500 | int ns_name_compress (const char *, u_char *, size_t, |
501 | const u_char **, const u_char **) __THROW; |
502 | int ns_name_skip (const u_char **, const u_char *) __THROW; |
503 | void ns_name_rollback (const u_char *, const u_char **, |
504 | const u_char **) __THROW; |
505 | int ns_sign (u_char *, int *, int, int, void *, |
506 | const u_char *, int, u_char *, int *, time_t) __THROW; |
507 | int ns_sign2 (u_char *, int *, int, int, void *, |
508 | const u_char *, int, u_char *, int *, time_t, |
509 | u_char **, u_char **) __THROW; |
510 | int ns_sign_tcp (u_char *, int *, int, int, |
511 | ns_tcp_tsig_state *, int) __THROW; |
512 | int ns_sign_tcp2 (u_char *, int *, int, int, |
513 | ns_tcp_tsig_state *, int, |
514 | u_char **, u_char **) __THROW; |
515 | int ns_sign_tcp_init (void *, const u_char *, int, |
516 | ns_tcp_tsig_state *) __THROW; |
517 | u_char *ns_find_tsig (u_char *, u_char *) __THROW; |
518 | int ns_verify (u_char *, int *, void *, const u_char *, int, |
519 | u_char *, int *, time_t *, int) __THROW; |
520 | int ns_verify_tcp (u_char *, int *, ns_tcp_tsig_state *, int) |
521 | __THROW; |
522 | int ns_verify_tcp_init (void *, const u_char *, int, |
523 | ns_tcp_tsig_state *) __THROW; |
524 | int ns_samedomain (const char *, const char *) __THROW; |
525 | int ns_subdomain (const char *, const char *) __THROW; |
526 | int ns_makecanon (const char *, char *, size_t) __THROW; |
527 | int ns_samename (const char *, const char *) __THROW; |
528 | __END_DECLS |
529 | |
530 | #ifdef BIND_4_COMPAT |
531 | #include <arpa/nameser_compat.h> |
532 | #endif |
533 | |
534 | #endif /* !_ARPA_NAMESER_H_ */ |
535 | /*! \file */ |
536 | |