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1 | /* $NetBSD: nameser.h,v 1.19 2005/12/26 19:01:47 perry Exp $ */ |
2 | ||
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. Neither the name of the University nor the names of its contributors | |
16 | * may be used to endorse or promote products derived from this software | |
17 | * without specific prior written permission. | |
18 | * | |
19 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
20 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
21 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
22 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
23 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
24 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
25 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
26 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
27 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
28 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
29 | * SUCH DAMAGE. | |
30 | */ | |
31 | ||
32 | /* | |
33 | * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC") | |
34 | * Copyright (c) 1996-1999 by Internet Software Consortium. | |
35 | * | |
36 | * Permission to use, copy, modify, and distribute this software for any | |
37 | * purpose with or without fee is hereby granted, provided that the above | |
38 | * copyright notice and this permission notice appear in all copies. | |
39 | * | |
40 | * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES | |
41 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | |
42 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR | |
43 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |
44 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
45 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT | |
46 | * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
47 | */ | |
48 | ||
49 | /* | |
50 | * Id: nameser.h,v 1.2.2.4.4.1 2004/03/09 08:33:30 marka Exp | |
51 | */ | |
52 | ||
53 | /* | |
54 | * This version of this file is derived from Android 2.3 "Gingerbread", | |
55 | * which contains uncredited changes by Android/Google developers. It has | |
56 | * been modified in 2011 for use in the Android build of Mozilla Firefox by | |
57 | * Mozilla contributors (including Michael Edwards <m.k.edwards@gmail.com>, | |
58 | * and Steve Workman <sjhworkman@gmail.com>). | |
59 | * These changes are offered under the same license as the original NetBSD | |
60 | * file, whose copyright and license are unchanged above. | |
61 | */ | |
62 | ||
63 | #ifndef _ARPA_NAMESER_H_ | |
64 | #define _ARPA_NAMESER_H_ | |
65 | ||
66 | #define BIND_4_COMPAT | |
67 | ||
68 | #include <sys/types.h> | |
69 | #include <sys/cdefs.h> | |
70 | ||
71 | /* | |
72 | * Revision information. This is the release date in YYYYMMDD format. | |
73 | * It can change every day so the right thing to do with it is use it | |
74 | * in preprocessor commands such as "#if (__NAMESER > 19931104)". Do not | |
75 | * compare for equality; rather, use it to determine whether your libbind.a | |
76 | * contains a new enough lib/nameser/ to support the feature you need. | |
77 | */ | |
78 | ||
79 | #define __NAMESER 19991006 /* New interface version stamp. */ | |
80 | ||
81 | /* | |
82 | * Define constants based on RFC 883, RFC 1034, RFC 1035 | |
83 | */ | |
84 | #define NS_PACKETSZ 512 /* default UDP packet size */ | |
85 | #define NS_MAXDNAME 1025 /* maximum domain name */ | |
86 | #define NS_MAXMSG 65535 /* maximum message size */ | |
87 | #define NS_MAXCDNAME 255 /* maximum compressed domain name */ | |
88 | #define NS_MAXLABEL 63 /* maximum length of domain label */ | |
89 | #define NS_HFIXEDSZ 12 /* #/bytes of fixed data in header */ | |
90 | #define NS_QFIXEDSZ 4 /* #/bytes of fixed data in query */ | |
91 | #define NS_RRFIXEDSZ 10 /* #/bytes of fixed data in r record */ | |
92 | #define NS_INT32SZ 4 /* #/bytes of data in a uint32_t */ | |
93 | #define NS_INT16SZ 2 /* #/bytes of data in a uint16_t */ | |
94 | #define NS_INT8SZ 1 /* #/bytes of data in a uint8_t */ | |
95 | #define NS_INADDRSZ 4 /* IPv4 T_A */ | |
96 | #define NS_IN6ADDRSZ 16 /* IPv6 T_AAAA */ | |
97 | #define NS_CMPRSFLGS 0xc0 /* Flag bits indicating name compression. */ | |
98 | #define NS_DEFAULTPORT 53 /* For both TCP and UDP. */ | |
99 | ||
100 | /* | |
101 | * These can be expanded with synonyms, just keep ns_parse.c:ns_parserecord() | |
102 | * in synch with it. | |
103 | */ | |
104 | typedef enum __ns_sect { | |
105 | ns_s_qd = 0, /* Query: Question. */ | |
106 | ns_s_zn = 0, /* Update: Zone. */ | |
107 | ns_s_an = 1, /* Query: Answer. */ | |
108 | ns_s_pr = 1, /* Update: Prerequisites. */ | |
109 | ns_s_ns = 2, /* Query: Name servers. */ | |
110 | ns_s_ud = 2, /* Update: Update. */ | |
111 | ns_s_ar = 3, /* Query|Update: Additional records. */ | |
112 | ns_s_max = 4 | |
113 | } ns_sect; | |
114 | ||
115 | /* | |
116 | * This is a message handle. It is caller allocated and has no dynamic data. | |
117 | * This structure is intended to be opaque to all but ns_parse.c, thus the | |
118 | * leading _'s on the member names. Use the accessor functions, not the _'s. | |
119 | */ | |
120 | typedef struct __ns_msg { | |
121 | const u_char *_msg, *_eom; | |
122 | uint16_t _id, _flags, _counts[ns_s_max]; | |
123 | const u_char *_sections[ns_s_max]; | |
124 | ns_sect _sect; | |
125 | int _rrnum; | |
126 | const u_char *_msg_ptr; | |
127 | } ns_msg; | |
128 | ||
129 | /* Private data structure - do not use from outside library. */ | |
130 | struct _ns_flagdata { int mask, shift; }; | |
131 | extern const struct _ns_flagdata _ns_flagdata[]; | |
132 | ||
133 | /* Accessor macros - this is part of the public interface. */ | |
134 | ||
135 | #define ns_msg_id(handle) ((handle)._id + 0) | |
136 | #define ns_msg_base(handle) ((handle)._msg + 0) | |
137 | #define ns_msg_end(handle) ((handle)._eom + 0) | |
138 | #define ns_msg_size(handle) ((size_t)((handle)._eom - (handle)._msg)) | |
139 | #define ns_msg_count(handle, section) ((handle)._counts[section] + 0) | |
140 | ||
141 | /* | |
142 | * This is a parsed record. It is caller allocated and has no dynamic data. | |
143 | */ | |
144 | typedef struct __ns_rr { | |
145 | char name[NS_MAXDNAME]; | |
146 | uint16_t type; | |
147 | uint16_t rr_class; | |
148 | uint32_t ttl; | |
149 | uint16_t rdlength; | |
150 | const u_char * rdata; | |
151 | } ns_rr; | |
152 | ||
153 | /* Accessor macros - this is part of the public interface. */ | |
154 | #define ns_rr_name(rr) (((rr).name[0] != '\0') ? (rr).name : ".") | |
155 | #define ns_rr_type(rr) ((ns_type)((rr).type + 0)) | |
156 | #define ns_rr_class(rr) ((ns_class)((rr).rr_class + 0)) | |
157 | #define ns_rr_ttl(rr) ((u_long)(rr).ttl + 0) | |
158 | #define ns_rr_rdlen(rr) ((size_t)(rr).rdlength + 0) | |
159 | #define ns_rr_rdata(rr) ((rr).rdata + 0) | |
160 | ||
161 | /* | |
162 | * These don't have to be in the same order as in the packet flags word, | |
163 | * and they can even overlap in some cases, but they will need to be kept | |
164 | * in synch with ns_parse.c:ns_flagdata[]. | |
165 | */ | |
166 | typedef enum __ns_flag { | |
167 | ns_f_qr, /* Question/Response. */ | |
168 | ns_f_opcode, /* Operation code. */ | |
169 | ns_f_aa, /* Authoritative Answer. */ | |
170 | ns_f_tc, /* Truncation occurred. */ | |
171 | ns_f_rd, /* Recursion Desired. */ | |
172 | ns_f_ra, /* Recursion Available. */ | |
173 | ns_f_z, /* MBZ. */ | |
174 | ns_f_ad, /* Authentic Data (DNSSEC). */ | |
175 | ns_f_cd, /* Checking Disabled (DNSSEC). */ | |
176 | ns_f_rcode, /* Response code. */ | |
177 | ns_f_max | |
178 | } ns_flag; | |
179 | ||
180 | /* | |
181 | * Currently defined opcodes. | |
182 | */ | |
183 | typedef enum __ns_opcode { | |
184 | ns_o_query = 0, /* Standard query. */ | |
185 | ns_o_iquery = 1, /* Inverse query (deprecated/unsupported). */ | |
186 | ns_o_status = 2, /* Name server status query (unsupported). */ | |
187 | /* Opcode 3 is undefined/reserved. */ | |
188 | ns_o_notify = 4, /* Zone change notification. */ | |
189 | ns_o_update = 5, /* Zone update message. */ | |
190 | ns_o_max = 6 | |
191 | } ns_opcode; | |
192 | ||
193 | /* | |
194 | * Currently defined response codes. | |
195 | */ | |
196 | typedef enum __ns_rcode { | |
197 | ns_r_noerror = 0, /* No error occurred. */ | |
198 | ns_r_formerr = 1, /* Format error. */ | |
199 | ns_r_servfail = 2, /* Server failure. */ | |
200 | ns_r_nxdomain = 3, /* Name error. */ | |
201 | ns_r_notimpl = 4, /* Unimplemented. */ | |
202 | ns_r_refused = 5, /* Operation refused. */ | |
203 | /* these are for BIND_UPDATE */ | |
204 | ns_r_yxdomain = 6, /* Name exists */ | |
205 | ns_r_yxrrset = 7, /* RRset exists */ | |
206 | ns_r_nxrrset = 8, /* RRset does not exist */ | |
207 | ns_r_notauth = 9, /* Not authoritative for zone */ | |
208 | ns_r_notzone = 10, /* Zone of record different from zone section */ | |
209 | ns_r_max = 11, | |
210 | /* The following are EDNS extended rcodes */ | |
211 | ns_r_badvers = 16, | |
212 | /* The following are TSIG errors */ | |
213 | ns_r_badsig = 16, | |
214 | ns_r_badkey = 17, | |
215 | ns_r_badtime = 18 | |
216 | } ns_rcode; | |
217 | ||
218 | /* BIND_UPDATE */ | |
219 | typedef enum __ns_update_operation { | |
220 | ns_uop_delete = 0, | |
221 | ns_uop_add = 1, | |
222 | ns_uop_max = 2 | |
223 | } ns_update_operation; | |
224 | ||
225 | /* | |
226 | * This structure is used for TSIG authenticated messages | |
227 | */ | |
228 | struct ns_tsig_key { | |
229 | char name[NS_MAXDNAME], alg[NS_MAXDNAME]; | |
230 | unsigned char *data; | |
231 | int len; | |
232 | }; | |
233 | typedef struct ns_tsig_key ns_tsig_key; | |
234 | ||
235 | /* | |
236 | * This structure is used for TSIG authenticated TCP messages | |
237 | */ | |
238 | struct ns_tcp_tsig_state { | |
239 | int counter; | |
240 | struct dst_key *key; | |
241 | void *ctx; | |
242 | unsigned char sig[NS_PACKETSZ]; | |
243 | int siglen; | |
244 | }; | |
245 | typedef struct ns_tcp_tsig_state ns_tcp_tsig_state; | |
246 | ||
247 | #define NS_TSIG_FUDGE 300 | |
248 | #define NS_TSIG_TCP_COUNT 100 | |
249 | #define NS_TSIG_ALG_HMAC_MD5 "HMAC-MD5.SIG-ALG.REG.INT" | |
250 | ||
251 | #define NS_TSIG_ERROR_NO_TSIG -10 | |
252 | #define NS_TSIG_ERROR_NO_SPACE -11 | |
253 | #define NS_TSIG_ERROR_FORMERR -12 | |
254 | ||
255 | /* | |
256 | * Currently defined type values for resources and queries. | |
257 | */ | |
258 | typedef enum __ns_type { | |
259 | ns_t_invalid = 0, /* Cookie. */ | |
260 | ns_t_a = 1, /* Host address. */ | |
261 | ns_t_ns = 2, /* Authoritative server. */ | |
262 | ns_t_md = 3, /* Mail destination. */ | |
263 | ns_t_mf = 4, /* Mail forwarder. */ | |
264 | ns_t_cname = 5, /* Canonical name. */ | |
265 | ns_t_soa = 6, /* Start of authority zone. */ | |
266 | ns_t_mb = 7, /* Mailbox domain name. */ | |
267 | ns_t_mg = 8, /* Mail group member. */ | |
268 | ns_t_mr = 9, /* Mail rename name. */ | |
269 | ns_t_null = 10, /* Null resource record. */ | |
270 | ns_t_wks = 11, /* Well known service. */ | |
271 | ns_t_ptr = 12, /* Domain name pointer. */ | |
272 | ns_t_hinfo = 13, /* Host information. */ | |
273 | ns_t_minfo = 14, /* Mailbox information. */ | |
274 | ns_t_mx = 15, /* Mail routing information. */ | |
275 | ns_t_txt = 16, /* Text strings. */ | |
276 | ns_t_rp = 17, /* Responsible person. */ | |
277 | ns_t_afsdb = 18, /* AFS cell database. */ | |
278 | ns_t_x25 = 19, /* X_25 calling address. */ | |
279 | ns_t_isdn = 20, /* ISDN calling address. */ | |
280 | ns_t_rt = 21, /* Router. */ | |
281 | ns_t_nsap = 22, /* NSAP address. */ | |
282 | ns_t_nsap_ptr = 23, /* Reverse NSAP lookup (deprecated). */ | |
283 | ns_t_sig = 24, /* Security signature. */ | |
284 | ns_t_key = 25, /* Security key. */ | |
285 | ns_t_px = 26, /* X.400 mail mapping. */ | |
286 | ns_t_gpos = 27, /* Geographical position (withdrawn). */ | |
287 | ns_t_aaaa = 28, /* Ip6 Address. */ | |
288 | ns_t_loc = 29, /* Location Information. */ | |
289 | ns_t_nxt = 30, /* Next domain (security). */ | |
290 | ns_t_eid = 31, /* Endpoint identifier. */ | |
291 | ns_t_nimloc = 32, /* Nimrod Locator. */ | |
292 | ns_t_srv = 33, /* Server Selection. */ | |
293 | ns_t_atma = 34, /* ATM Address */ | |
294 | ns_t_naptr = 35, /* Naming Authority PoinTeR */ | |
295 | ns_t_kx = 36, /* Key Exchange */ | |
296 | ns_t_cert = 37, /* Certification record */ | |
297 | ns_t_a6 = 38, /* IPv6 address (deprecates AAAA) */ | |
298 | ns_t_dname = 39, /* Non-terminal DNAME (for IPv6) */ | |
299 | ns_t_sink = 40, /* Kitchen sink (experimentatl) */ | |
300 | ns_t_opt = 41, /* EDNS0 option (meta-RR) */ | |
301 | ns_t_apl = 42, /* Address prefix list (RFC 3123) */ | |
302 | ns_t_tkey = 249, /* Transaction key */ | |
303 | ns_t_tsig = 250, /* Transaction signature. */ | |
304 | ns_t_ixfr = 251, /* Incremental zone transfer. */ | |
305 | ns_t_axfr = 252, /* Transfer zone of authority. */ | |
306 | ns_t_mailb = 253, /* Transfer mailbox records. */ | |
307 | ns_t_maila = 254, /* Transfer mail agent records. */ | |
308 | ns_t_any = 255, /* Wildcard match. */ | |
309 | ns_t_zxfr = 256, /* BIND-specific, nonstandard. */ | |
310 | ns_t_max = 65536 | |
311 | } ns_type; | |
312 | ||
313 | /* Exclusively a QTYPE? (not also an RTYPE) */ | |
314 | #define ns_t_qt_p(t) (ns_t_xfr_p(t) || (t) == ns_t_any || \ | |
315 | (t) == ns_t_mailb || (t) == ns_t_maila) | |
316 | /* Some kind of meta-RR? (not a QTYPE, but also not an RTYPE) */ | |
317 | #define ns_t_mrr_p(t) ((t) == ns_t_tsig || (t) == ns_t_opt) | |
318 | /* Exclusively an RTYPE? (not also a QTYPE or a meta-RR) */ | |
319 | #define ns_t_rr_p(t) (!ns_t_qt_p(t) && !ns_t_mrr_p(t)) | |
320 | #define ns_t_udp_p(t) ((t) != ns_t_axfr && (t) != ns_t_zxfr) | |
321 | #define ns_t_xfr_p(t) ((t) == ns_t_axfr || (t) == ns_t_ixfr || \ | |
322 | (t) == ns_t_zxfr) | |
323 | ||
324 | /* | |
325 | * Values for class field | |
326 | */ | |
327 | typedef enum __ns_class { | |
328 | ns_c_invalid = 0, /* Cookie. */ | |
329 | ns_c_in = 1, /* Internet. */ | |
330 | ns_c_2 = 2, /* unallocated/unsupported. */ | |
331 | ns_c_chaos = 3, /* MIT Chaos-net. */ | |
332 | ns_c_hs = 4, /* MIT Hesiod. */ | |
333 | /* Query class values which do not appear in resource records */ | |
334 | ns_c_none = 254, /* for prereq. sections in update requests */ | |
335 | ns_c_any = 255, /* Wildcard match. */ | |
336 | ns_c_max = 65536 | |
337 | } ns_class; | |
338 | ||
339 | /* DNSSEC constants. */ | |
340 | ||
341 | typedef enum __ns_key_types { | |
342 | ns_kt_rsa = 1, /* key type RSA/MD5 */ | |
343 | ns_kt_dh = 2, /* Diffie Hellman */ | |
344 | ns_kt_dsa = 3, /* Digital Signature Standard (MANDATORY) */ | |
345 | ns_kt_private = 254 /* Private key type starts with OID */ | |
346 | } ns_key_types; | |
347 | ||
348 | typedef enum __ns_cert_types { | |
349 | cert_t_pkix = 1, /* PKIX (X.509v3) */ | |
350 | cert_t_spki = 2, /* SPKI */ | |
351 | cert_t_pgp = 3, /* PGP */ | |
352 | cert_t_url = 253, /* URL private type */ | |
353 | cert_t_oid = 254 /* OID private type */ | |
354 | } ns_cert_types; | |
355 | ||
356 | /* Flags field of the KEY RR rdata. */ | |
357 | #define NS_KEY_TYPEMASK 0xC000 /* Mask for "type" bits */ | |
358 | #define NS_KEY_TYPE_AUTH_CONF 0x0000 /* Key usable for both */ | |
359 | #define NS_KEY_TYPE_CONF_ONLY 0x8000 /* Key usable for confidentiality */ | |
360 | #define NS_KEY_TYPE_AUTH_ONLY 0x4000 /* Key usable for authentication */ | |
361 | #define NS_KEY_TYPE_NO_KEY 0xC000 /* No key usable for either; no key */ | |
362 | /* The type bits can also be interpreted independently, as single bits: */ | |
363 | #define NS_KEY_NO_AUTH 0x8000 /* Key unusable for authentication */ | |
364 | #define NS_KEY_NO_CONF 0x4000 /* Key unusable for confidentiality */ | |
365 | #define NS_KEY_RESERVED2 0x2000 /* Security is *mandatory* if bit=0 */ | |
366 | #define NS_KEY_EXTENDED_FLAGS 0x1000 /* reserved - must be zero */ | |
367 | #define NS_KEY_RESERVED4 0x0800 /* reserved - must be zero */ | |
368 | #define NS_KEY_RESERVED5 0x0400 /* reserved - must be zero */ | |
369 | #define NS_KEY_NAME_TYPE 0x0300 /* these bits determine the type */ | |
370 | #define NS_KEY_NAME_USER 0x0000 /* key is assoc. with user */ | |
371 | #define NS_KEY_NAME_ENTITY 0x0200 /* key is assoc. with entity eg host */ | |
372 | #define NS_KEY_NAME_ZONE 0x0100 /* key is zone key */ | |
373 | #define NS_KEY_NAME_RESERVED 0x0300 /* reserved meaning */ | |
374 | #define NS_KEY_RESERVED8 0x0080 /* reserved - must be zero */ | |
375 | #define NS_KEY_RESERVED9 0x0040 /* reserved - must be zero */ | |
376 | #define NS_KEY_RESERVED10 0x0020 /* reserved - must be zero */ | |
377 | #define NS_KEY_RESERVED11 0x0010 /* reserved - must be zero */ | |
378 | #define NS_KEY_SIGNATORYMASK 0x000F /* key can sign RR's of same name */ | |
379 | #define NS_KEY_RESERVED_BITMASK ( NS_KEY_RESERVED2 | \ | |
380 | NS_KEY_RESERVED4 | \ | |
381 | NS_KEY_RESERVED5 | \ | |
382 | NS_KEY_RESERVED8 | \ | |
383 | NS_KEY_RESERVED9 | \ | |
384 | NS_KEY_RESERVED10 | \ | |
385 | NS_KEY_RESERVED11 ) | |
386 | #define NS_KEY_RESERVED_BITMASK2 0xFFFF /* no bits defined here */ | |
387 | ||
388 | /* The Algorithm field of the KEY and SIG RR's is an integer, {1..254} */ | |
389 | #define NS_ALG_MD5RSA 1 /* MD5 with RSA */ | |
390 | #define NS_ALG_DH 2 /* Diffie Hellman KEY */ | |
391 | #define NS_ALG_DSA 3 /* DSA KEY */ | |
392 | #define NS_ALG_DSS NS_ALG_DSA | |
393 | #define NS_ALG_EXPIRE_ONLY 253 /* No alg, no security */ | |
394 | #define NS_ALG_PRIVATE_OID 254 /* Key begins with OID giving alg */ | |
395 | ||
396 | /* Protocol values */ | |
397 | /* value 0 is reserved */ | |
398 | #define NS_KEY_PROT_TLS 1 | |
399 | #define NS_KEY_PROT_EMAIL 2 | |
400 | #define NS_KEY_PROT_DNSSEC 3 | |
401 | #define NS_KEY_PROT_IPSEC 4 | |
402 | #define NS_KEY_PROT_ANY 255 | |
403 | ||
404 | /* Signatures */ | |
405 | #define NS_MD5RSA_MIN_BITS 512 /* Size of a mod or exp in bits */ | |
406 | #define NS_MD5RSA_MAX_BITS 4096 | |
407 | /* Total of binary mod and exp */ | |
408 | #define NS_MD5RSA_MAX_BYTES ((NS_MD5RSA_MAX_BITS+7/8)*2+3) | |
409 | /* Max length of text sig block */ | |
410 | #define NS_MD5RSA_MAX_BASE64 (((NS_MD5RSA_MAX_BYTES+2)/3)*4) | |
411 | #define NS_MD5RSA_MIN_SIZE ((NS_MD5RSA_MIN_BITS+7)/8) | |
412 | #define NS_MD5RSA_MAX_SIZE ((NS_MD5RSA_MAX_BITS+7)/8) | |
413 | ||
414 | #define NS_DSA_SIG_SIZE 41 | |
415 | #define NS_DSA_MIN_SIZE 213 | |
416 | #define NS_DSA_MAX_BYTES 405 | |
417 | ||
418 | /* Offsets into SIG record rdata to find various values */ | |
419 | #define NS_SIG_TYPE 0 /* Type flags */ | |
420 | #define NS_SIG_ALG 2 /* Algorithm */ | |
421 | #define NS_SIG_LABELS 3 /* How many labels in name */ | |
422 | #define NS_SIG_OTTL 4 /* Original TTL */ | |
423 | #define NS_SIG_EXPIR 8 /* Expiration time */ | |
424 | #define NS_SIG_SIGNED 12 /* Signature time */ | |
425 | #define NS_SIG_FOOT 16 /* Key footprint */ | |
426 | #define NS_SIG_SIGNER 18 /* Domain name of who signed it */ | |
427 | ||
428 | /* How RR types are represented as bit-flags in NXT records */ | |
429 | #define NS_NXT_BITS 8 | |
430 | #define NS_NXT_BIT_SET( n,p) (p[(n)/NS_NXT_BITS] |= (0x80>>((n)%NS_NXT_BITS))) | |
431 | #define NS_NXT_BIT_CLEAR(n,p) (p[(n)/NS_NXT_BITS] &= ~(0x80>>((n)%NS_NXT_BITS))) | |
432 | #define NS_NXT_BIT_ISSET(n,p) (p[(n)/NS_NXT_BITS] & (0x80>>((n)%NS_NXT_BITS))) | |
433 | #define NS_NXT_MAX 127 | |
434 | ||
435 | /* | |
436 | * EDNS0 extended flags, host order. | |
437 | */ | |
438 | #define NS_OPT_DNSSEC_OK 0x8000U | |
439 | ||
440 | /* | |
441 | * Inline versions of get/put short/long. Pointer is advanced. | |
442 | */ | |
443 | #define NS_GET16(s, cp) do { \ | |
444 | const u_char *t_cp = (const u_char *)(cp); \ | |
445 | (s) = ((uint16_t)t_cp[0] << 8) \ | |
446 | | ((uint16_t)t_cp[1]) \ | |
447 | ; \ | |
448 | (cp) += NS_INT16SZ; \ | |
449 | } while (/*CONSTCOND*/0) | |
450 | ||
451 | #define NS_GET32(l, cp) do { \ | |
452 | const u_char *t_cp = (const u_char *)(cp); \ | |
453 | (l) = ((uint32_t)t_cp[0] << 24) \ | |
454 | | ((uint32_t)t_cp[1] << 16) \ | |
455 | | ((uint32_t)t_cp[2] << 8) \ | |
456 | | ((uint32_t)t_cp[3]) \ | |
457 | ; \ | |
458 | (cp) += NS_INT32SZ; \ | |
459 | } while (/*CONSTCOND*/0) | |
460 | ||
461 | #define NS_PUT16(s, cp) do { \ | |
462 | uint32_t t_s = (uint32_t)(s); \ | |
463 | u_char *t_cp = (u_char *)(cp); \ | |
464 | *t_cp++ = t_s >> 8; \ | |
465 | *t_cp = t_s; \ | |
466 | (cp) += NS_INT16SZ; \ | |
467 | } while (/*CONSTCOND*/0) | |
468 | ||
469 | #define NS_PUT32(l, cp) do { \ | |
470 | uint32_t t_l = (uint32_t)(l); \ | |
471 | u_char *t_cp = (u_char *)(cp); \ | |
472 | *t_cp++ = t_l >> 24; \ | |
473 | *t_cp++ = t_l >> 16; \ | |
474 | *t_cp++ = t_l >> 8; \ | |
475 | *t_cp = t_l; \ | |
476 | (cp) += NS_INT32SZ; \ | |
477 | } while (/*CONSTCOND*/0) | |
478 | ||
479 | /* | |
480 | * ANSI C identifier hiding for bind's lib/nameser. | |
481 | */ | |
482 | #define ns_msg_getflag __ns_msg_getflag | |
483 | #define ns_get16 __ns_get16 | |
484 | #define ns_get32 __ns_get32 | |
485 | #define ns_put16 __ns_put16 | |
486 | #define ns_put32 __ns_put32 | |
487 | #define ns_initparse __ns_initparse | |
488 | #define ns_skiprr __ns_skiprr | |
489 | #define ns_parserr __ns_parserr | |
490 | #define ns_sprintrr __ns_sprintrr | |
491 | #define ns_sprintrrf __ns_sprintrrf | |
492 | #define ns_format_ttl __ns_format_ttl | |
493 | #define ns_parse_ttl __ns_parse_ttl | |
494 | #define ns_datetosecs __ns_datetosecs | |
495 | #define ns_name_ntol __ns_name_ntol | |
496 | #define ns_name_ntop __ns_name_ntop | |
497 | #define ns_name_pton __ns_name_pton | |
498 | #define ns_name_unpack __ns_name_unpack | |
499 | #define ns_name_pack __ns_name_pack | |
500 | #define ns_name_compress __ns_name_compress | |
501 | #define ns_name_uncompress __ns_name_uncompress | |
502 | #define ns_name_skip __ns_name_skip | |
503 | #define ns_name_rollback __ns_name_rollback | |
504 | #define ns_sign __ns_sign | |
505 | #define ns_sign2 __ns_sign2 | |
506 | #define ns_sign_tcp __ns_sign_tcp | |
507 | #define ns_sign_tcp2 __ns_sign_tcp2 | |
508 | #define ns_sign_tcp_init __ns_sign_tcp_init | |
509 | #define ns_find_tsig __ns_find_tsig | |
510 | #define ns_verify __ns_verify | |
511 | #define ns_verify_tcp __ns_verify_tcp | |
512 | #define ns_verify_tcp_init __ns_verify_tcp_init | |
513 | #define ns_samedomain __ns_samedomain | |
514 | #define ns_subdomain __ns_subdomain | |
515 | #define ns_makecanon __ns_makecanon | |
516 | #define ns_samename __ns_samename | |
517 | ||
518 | __BEGIN_DECLS | |
519 | int ns_msg_getflag(ns_msg, int); | |
520 | uint16_t ns_get16(const u_char *); | |
521 | uint32_t ns_get32(const u_char *); | |
522 | void ns_put16(uint16_t, u_char *); | |
523 | void ns_put32(uint32_t, u_char *); | |
524 | int ns_initparse(const u_char *, int, ns_msg *); | |
525 | int ns_skiprr(const u_char *, const u_char *, ns_sect, int); | |
526 | int ns_parserr(ns_msg *, ns_sect, int, ns_rr *); | |
527 | int ns_sprintrr(const ns_msg *, const ns_rr *, | |
528 | const char *, const char *, char *, size_t); | |
529 | int ns_sprintrrf(const u_char *, size_t, const char *, | |
530 | ns_class, ns_type, u_long, const u_char *, | |
531 | size_t, const char *, const char *, | |
532 | char *, size_t); | |
533 | int ns_format_ttl(u_long, char *, size_t); | |
534 | int ns_parse_ttl(const char *, u_long *); | |
535 | uint32_t ns_datetosecs(const char *cp, int *errp); | |
536 | int ns_name_ntol(const u_char *, u_char *, size_t); | |
537 | int ns_name_ntop(const u_char *, char *, size_t); | |
538 | int ns_name_pton(const char *, u_char *, size_t); | |
539 | int ns_name_unpack(const u_char *, const u_char *, | |
540 | const u_char *, u_char *, size_t); | |
541 | int ns_name_pack(const u_char *, u_char *, int, | |
542 | const u_char **, const u_char **); | |
543 | int ns_name_uncompress(const u_char *, const u_char *, | |
544 | const u_char *, char *, size_t); | |
545 | int ns_name_compress(const char *, u_char *, size_t, | |
546 | const u_char **, const u_char **); | |
547 | int ns_name_skip(const u_char **, const u_char *); | |
548 | void ns_name_rollback(const u_char *, const u_char **, | |
549 | const u_char **); | |
550 | int ns_sign(u_char *, int *, int, int, void *, | |
551 | const u_char *, int, u_char *, int *, time_t); | |
552 | int ns_sign2(u_char *, int *, int, int, void *, | |
553 | const u_char *, int, u_char *, int *, time_t, | |
554 | u_char **, u_char **); | |
555 | int ns_sign_tcp(u_char *, int *, int, int, | |
556 | ns_tcp_tsig_state *, int); | |
557 | int ns_sign_tcp2(u_char *, int *, int, int, | |
558 | ns_tcp_tsig_state *, int, | |
559 | u_char **, u_char **); | |
560 | int ns_sign_tcp_init(void *, const u_char *, int, | |
561 | ns_tcp_tsig_state *); | |
562 | u_char *ns_find_tsig(u_char *, u_char *); | |
563 | int ns_verify(u_char *, int *, void *, | |
564 | const u_char *, int, u_char *, int *, | |
565 | time_t *, int); | |
566 | int ns_verify_tcp(u_char *, int *, ns_tcp_tsig_state *, int); | |
567 | int ns_verify_tcp_init(void *, const u_char *, int, | |
568 | ns_tcp_tsig_state *); | |
569 | int ns_samedomain(const char *, const char *); | |
570 | int ns_subdomain(const char *, const char *); | |
571 | int ns_makecanon(const char *, char *, size_t); | |
572 | int ns_samename(const char *, const char *); | |
573 | __END_DECLS | |
574 | ||
575 | #ifdef BIND_4_COMPAT | |
576 | #include <arpa/nameser_compat.h> | |
577 | #endif | |
578 | ||
579 | #if 0 | |
580 | # include <logd.h> | |
581 | # define XLOG(...) \ | |
582 | __libc_android_log_print(ANDROID_LOG_DEBUG,"libc",__VA_ARGS__) | |
583 | #else | |
584 | #define XLOG(...) do {} while (0) | |
585 | #endif | |
586 | ||
587 | #endif /* !_ARPA_NAMESER_H_ */ |