nameser.h raw
1 #ifndef _ARPA_NAMESER_H
2 #define _ARPA_NAMESER_H
3
4 #ifdef __cplusplus
5 extern "C" {
6 #endif
7
8 #include <stddef.h>
9 #include <stdint.h>
10
11 #define __NAMESER 19991006
12 #define NS_PACKETSZ 512
13 #define NS_MAXDNAME 1025
14 #define NS_MAXMSG 65535
15 #define NS_MAXCDNAME 255
16 #define NS_MAXLABEL 63
17 #define NS_HFIXEDSZ 12
18 #define NS_QFIXEDSZ 4
19 #define NS_RRFIXEDSZ 10
20 #define NS_INT32SZ 4
21 #define NS_INT16SZ 2
22 #define NS_INT8SZ 1
23 #define NS_INADDRSZ 4
24 #define NS_IN6ADDRSZ 16
25 #define NS_CMPRSFLGS 0xc0
26 #define NS_DEFAULTPORT 53
27
28 typedef enum __ns_sect {
29 ns_s_qd = 0,
30 ns_s_zn = 0,
31 ns_s_an = 1,
32 ns_s_pr = 1,
33 ns_s_ns = 2,
34 ns_s_ud = 2,
35 ns_s_ar = 3,
36 ns_s_max = 4
37 } ns_sect;
38
39 typedef struct __ns_msg {
40 const unsigned char *_msg, *_eom;
41 uint16_t _id, _flags, _counts[ns_s_max];
42 const unsigned char *_sections[ns_s_max];
43 ns_sect _sect;
44 int _rrnum;
45 const unsigned char *_msg_ptr;
46 } ns_msg;
47
48 struct _ns_flagdata { int mask, shift; };
49 extern const struct _ns_flagdata _ns_flagdata[];
50
51 #define ns_msg_id(handle) ((handle)._id + 0)
52 #define ns_msg_base(handle) ((handle)._msg + 0)
53 #define ns_msg_end(handle) ((handle)._eom + 0)
54 #define ns_msg_size(handle) ((handle)._eom - (handle)._msg)
55 #define ns_msg_count(handle, section) ((handle)._counts[section] + 0)
56 #define ns_msg_getflag(handle, flag) \
57 (((handle)._flags & _ns_flagdata[flag].mask) >> _ns_flagdata[flag].shift)
58
59 typedef struct __ns_rr {
60 char name[NS_MAXDNAME];
61 uint16_t type;
62 uint16_t rr_class;
63 uint32_t ttl;
64 uint16_t rdlength;
65 const unsigned char *rdata;
66 } ns_rr;
67
68 #define ns_rr_name(rr) (((rr).name[0] != '\0') ? (rr).name : ".")
69 #define ns_rr_type(rr) ((ns_type)((rr).type + 0))
70 #define ns_rr_class(rr) ((ns_class)((rr).rr_class + 0))
71 #define ns_rr_ttl(rr) ((rr).ttl + 0)
72 #define ns_rr_rdlen(rr) ((rr).rdlength + 0)
73 #define ns_rr_rdata(rr) ((rr).rdata + 0)
74
75 typedef enum __ns_flag {
76 ns_f_qr,
77 ns_f_opcode,
78 ns_f_aa,
79 ns_f_tc,
80 ns_f_rd,
81 ns_f_ra,
82 ns_f_z,
83 ns_f_ad,
84 ns_f_cd,
85 ns_f_rcode,
86 ns_f_max
87 } ns_flag;
88
89 typedef enum __ns_opcode {
90 ns_o_query = 0,
91 ns_o_iquery = 1,
92 ns_o_status = 2,
93 ns_o_notify = 4,
94 ns_o_update = 5,
95 ns_o_max = 6
96 } ns_opcode;
97
98 typedef enum __ns_rcode {
99 ns_r_noerror = 0,
100 ns_r_formerr = 1,
101 ns_r_servfail = 2,
102 ns_r_nxdomain = 3,
103 ns_r_notimpl = 4,
104 ns_r_refused = 5,
105 ns_r_yxdomain = 6,
106 ns_r_yxrrset = 7,
107 ns_r_nxrrset = 8,
108 ns_r_notauth = 9,
109 ns_r_notzone = 10,
110 ns_r_max = 11,
111 ns_r_badvers = 16,
112 ns_r_badsig = 16,
113 ns_r_badkey = 17,
114 ns_r_badtime = 18
115 } ns_rcode;
116
117 typedef enum __ns_update_operation {
118 ns_uop_delete = 0,
119 ns_uop_add = 1,
120 ns_uop_max = 2
121 } ns_update_operation;
122
123 struct ns_tsig_key {
124 char name[NS_MAXDNAME], alg[NS_MAXDNAME];
125 unsigned char *data;
126 int len;
127 };
128 typedef struct ns_tsig_key ns_tsig_key;
129
130 struct ns_tcp_tsig_state {
131 int counter;
132 struct dst_key *key;
133 void *ctx;
134 unsigned char sig[NS_PACKETSZ];
135 int siglen;
136 };
137 typedef struct ns_tcp_tsig_state ns_tcp_tsig_state;
138
139 #define NS_TSIG_FUDGE 300
140 #define NS_TSIG_TCP_COUNT 100
141 #define NS_TSIG_ALG_HMAC_MD5 "HMAC-MD5.SIG-ALG.REG.INT"
142
143 #define NS_TSIG_ERROR_NO_TSIG -10
144 #define NS_TSIG_ERROR_NO_SPACE -11
145 #define NS_TSIG_ERROR_FORMERR -12
146
147 typedef enum __ns_type {
148 ns_t_invalid = 0,
149 ns_t_a = 1,
150 ns_t_ns = 2,
151 ns_t_md = 3,
152 ns_t_mf = 4,
153 ns_t_cname = 5,
154 ns_t_soa = 6,
155 ns_t_mb = 7,
156 ns_t_mg = 8,
157 ns_t_mr = 9,
158 ns_t_null = 10,
159 ns_t_wks = 11,
160 ns_t_ptr = 12,
161 ns_t_hinfo = 13,
162 ns_t_minfo = 14,
163 ns_t_mx = 15,
164 ns_t_txt = 16,
165 ns_t_rp = 17,
166 ns_t_afsdb = 18,
167 ns_t_x25 = 19,
168 ns_t_isdn = 20,
169 ns_t_rt = 21,
170 ns_t_nsap = 22,
171 ns_t_nsap_ptr = 23,
172 ns_t_sig = 24,
173 ns_t_key = 25,
174 ns_t_px = 26,
175 ns_t_gpos = 27,
176 ns_t_aaaa = 28,
177 ns_t_loc = 29,
178 ns_t_nxt = 30,
179 ns_t_eid = 31,
180 ns_t_nimloc = 32,
181 ns_t_srv = 33,
182 ns_t_atma = 34,
183 ns_t_naptr = 35,
184 ns_t_kx = 36,
185 ns_t_cert = 37,
186 ns_t_a6 = 38,
187 ns_t_dname = 39,
188 ns_t_sink = 40,
189 ns_t_opt = 41,
190 ns_t_apl = 42,
191 ns_t_tkey = 249,
192 ns_t_tsig = 250,
193 ns_t_ixfr = 251,
194 ns_t_axfr = 252,
195 ns_t_mailb = 253,
196 ns_t_maila = 254,
197 ns_t_any = 255,
198 ns_t_zxfr = 256,
199 ns_t_max = 65536
200 } ns_type;
201
202 #define ns_t_qt_p(t) (ns_t_xfr_p(t) || (t) == ns_t_any || \
203 (t) == ns_t_mailb || (t) == ns_t_maila)
204 #define ns_t_mrr_p(t) ((t) == ns_t_tsig || (t) == ns_t_opt)
205 #define ns_t_rr_p(t) (!ns_t_qt_p(t) && !ns_t_mrr_p(t))
206 #define ns_t_udp_p(t) ((t) != ns_t_axfr && (t) != ns_t_zxfr)
207 #define ns_t_xfr_p(t) ((t) == ns_t_axfr || (t) == ns_t_ixfr || \
208 (t) == ns_t_zxfr)
209
210 typedef enum __ns_class {
211 ns_c_invalid = 0,
212 ns_c_in = 1,
213 ns_c_2 = 2,
214 ns_c_chaos = 3,
215 ns_c_hs = 4,
216 ns_c_none = 254,
217 ns_c_any = 255,
218 ns_c_max = 65536
219 } ns_class;
220
221 typedef enum __ns_key_types {
222 ns_kt_rsa = 1,
223 ns_kt_dh = 2,
224 ns_kt_dsa = 3,
225 ns_kt_private = 254
226 } ns_key_types;
227
228 typedef enum __ns_cert_types {
229 cert_t_pkix = 1,
230 cert_t_spki = 2,
231 cert_t_pgp = 3,
232 cert_t_url = 253,
233 cert_t_oid = 254
234 } ns_cert_types;
235
236 #define NS_KEY_TYPEMASK 0xC000
237 #define NS_KEY_TYPE_AUTH_CONF 0x0000
238 #define NS_KEY_TYPE_CONF_ONLY 0x8000
239 #define NS_KEY_TYPE_AUTH_ONLY 0x4000
240 #define NS_KEY_TYPE_NO_KEY 0xC000
241 #define NS_KEY_NO_AUTH 0x8000
242 #define NS_KEY_NO_CONF 0x4000
243 #define NS_KEY_RESERVED2 0x2000
244 #define NS_KEY_EXTENDED_FLAGS 0x1000
245 #define NS_KEY_RESERVED4 0x0800
246 #define NS_KEY_RESERVED5 0x0400
247 #define NS_KEY_NAME_TYPE 0x0300
248 #define NS_KEY_NAME_USER 0x0000
249 #define NS_KEY_NAME_ENTITY 0x0200
250 #define NS_KEY_NAME_ZONE 0x0100
251 #define NS_KEY_NAME_RESERVED 0x0300
252 #define NS_KEY_RESERVED8 0x0080
253 #define NS_KEY_RESERVED9 0x0040
254 #define NS_KEY_RESERVED10 0x0020
255 #define NS_KEY_RESERVED11 0x0010
256 #define NS_KEY_SIGNATORYMASK 0x000F
257 #define NS_KEY_RESERVED_BITMASK ( NS_KEY_RESERVED2 | \
258 NS_KEY_RESERVED4 | \
259 NS_KEY_RESERVED5 | \
260 NS_KEY_RESERVED8 | \
261 NS_KEY_RESERVED9 | \
262 NS_KEY_RESERVED10 | \
263 NS_KEY_RESERVED11 )
264 #define NS_KEY_RESERVED_BITMASK2 0xFFFF
265 #define NS_ALG_MD5RSA 1
266 #define NS_ALG_DH 2
267 #define NS_ALG_DSA 3
268 #define NS_ALG_DSS NS_ALG_DSA
269 #define NS_ALG_EXPIRE_ONLY 253
270 #define NS_ALG_PRIVATE_OID 254
271
272 #define NS_KEY_PROT_TLS 1
273 #define NS_KEY_PROT_EMAIL 2
274 #define NS_KEY_PROT_DNSSEC 3
275 #define NS_KEY_PROT_IPSEC 4
276 #define NS_KEY_PROT_ANY 255
277
278 #define NS_MD5RSA_MIN_BITS 512
279 #define NS_MD5RSA_MAX_BITS 4096
280 #define NS_MD5RSA_MAX_BYTES ((NS_MD5RSA_MAX_BITS+7/8)*2+3)
281 #define NS_MD5RSA_MAX_BASE64 (((NS_MD5RSA_MAX_BYTES+2)/3)*4)
282 #define NS_MD5RSA_MIN_SIZE ((NS_MD5RSA_MIN_BITS+7)/8)
283 #define NS_MD5RSA_MAX_SIZE ((NS_MD5RSA_MAX_BITS+7)/8)
284
285 #define NS_DSA_SIG_SIZE 41
286 #define NS_DSA_MIN_SIZE 213
287 #define NS_DSA_MAX_BYTES 405
288
289 #define NS_SIG_TYPE 0
290 #define NS_SIG_ALG 2
291 #define NS_SIG_LABELS 3
292 #define NS_SIG_OTTL 4
293 #define NS_SIG_EXPIR 8
294 #define NS_SIG_SIGNED 12
295 #define NS_SIG_FOOT 16
296 #define NS_SIG_SIGNER 18
297 #define NS_NXT_BITS 8
298 #define NS_NXT_BIT_SET( n,p) (p[(n)/NS_NXT_BITS] |= (0x80>>((n)%NS_NXT_BITS)))
299 #define NS_NXT_BIT_CLEAR(n,p) (p[(n)/NS_NXT_BITS] &= ~(0x80>>((n)%NS_NXT_BITS)))
300 #define NS_NXT_BIT_ISSET(n,p) (p[(n)/NS_NXT_BITS] & (0x80>>((n)%NS_NXT_BITS)))
301 #define NS_NXT_MAX 127
302
303 #define NS_OPT_DNSSEC_OK 0x8000U
304 #define NS_OPT_NSID 3
305
306 #define NS_GET16(s, cp) (void)((s) = ns_get16(((cp)+=2)-2))
307 #define NS_GET32(l, cp) (void)((l) = ns_get32(((cp)+=4)-4))
308 #define NS_PUT16(s, cp) ns_put16((s), ((cp)+=2)-2)
309 #define NS_PUT32(l, cp) ns_put32((l), ((cp)+=4)-4)
310
311 unsigned ns_get16(const unsigned char *);
312 unsigned long ns_get32(const unsigned char *);
313 void ns_put16(unsigned, unsigned char *);
314 void ns_put32(unsigned long, unsigned char *);
315
316 int ns_initparse(const unsigned char *, int, ns_msg *);
317 int ns_parserr(ns_msg *, ns_sect, int, ns_rr *);
318 int ns_skiprr(const unsigned char *, const unsigned char *, ns_sect, int);
319 int ns_name_uncompress(const unsigned char *, const unsigned char *, const unsigned char *, char *, size_t);
320
321
322 #define __BIND 19950621
323
324 typedef struct {
325 unsigned id :16;
326 #if __BYTE_ORDER == __BIG_ENDIAN
327 unsigned qr: 1;
328 unsigned opcode: 4;
329 unsigned aa: 1;
330 unsigned tc: 1;
331 unsigned rd: 1;
332 unsigned ra: 1;
333 unsigned unused :1;
334 unsigned ad: 1;
335 unsigned cd: 1;
336 unsigned rcode :4;
337 #else
338 unsigned rd :1;
339 unsigned tc :1;
340 unsigned aa :1;
341 unsigned opcode :4;
342 unsigned qr :1;
343 unsigned rcode :4;
344 unsigned cd: 1;
345 unsigned ad: 1;
346 unsigned unused :1;
347 unsigned ra :1;
348 #endif
349 unsigned qdcount :16;
350 unsigned ancount :16;
351 unsigned nscount :16;
352 unsigned arcount :16;
353 } HEADER;
354
355 #define PACKETSZ NS_PACKETSZ
356 #define MAXDNAME NS_MAXDNAME
357 #define MAXCDNAME NS_MAXCDNAME
358 #define MAXLABEL NS_MAXLABEL
359 #define HFIXEDSZ NS_HFIXEDSZ
360 #define QFIXEDSZ NS_QFIXEDSZ
361 #define RRFIXEDSZ NS_RRFIXEDSZ
362 #define INT32SZ NS_INT32SZ
363 #define INT16SZ NS_INT16SZ
364 #define INT8SZ NS_INT8SZ
365 #define INADDRSZ NS_INADDRSZ
366 #define IN6ADDRSZ NS_IN6ADDRSZ
367 #define INDIR_MASK NS_CMPRSFLGS
368 #define NAMESERVER_PORT NS_DEFAULTPORT
369
370 #define S_ZONE ns_s_zn
371 #define S_PREREQ ns_s_pr
372 #define S_UPDATE ns_s_ud
373 #define S_ADDT ns_s_ar
374
375 #define QUERY ns_o_query
376 #define IQUERY ns_o_iquery
377 #define STATUS ns_o_status
378 #define NS_NOTIFY_OP ns_o_notify
379 #define NS_UPDATE_OP ns_o_update
380
381 #define NOERROR ns_r_noerror
382 #define FORMERR ns_r_formerr
383 #define SERVFAIL ns_r_servfail
384 #define NXDOMAIN ns_r_nxdomain
385 #define NOTIMP ns_r_notimpl
386 #define REFUSED ns_r_refused
387 #define YXDOMAIN ns_r_yxdomain
388 #define YXRRSET ns_r_yxrrset
389 #define NXRRSET ns_r_nxrrset
390 #define NOTAUTH ns_r_notauth
391 #define NOTZONE ns_r_notzone
392
393 #define DELETE ns_uop_delete
394 #define ADD ns_uop_add
395
396 #define T_A ns_t_a
397 #define T_NS ns_t_ns
398 #define T_MD ns_t_md
399 #define T_MF ns_t_mf
400 #define T_CNAME ns_t_cname
401 #define T_SOA ns_t_soa
402 #define T_MB ns_t_mb
403 #define T_MG ns_t_mg
404 #define T_MR ns_t_mr
405 #define T_NULL ns_t_null
406 #define T_WKS ns_t_wks
407 #define T_PTR ns_t_ptr
408 #define T_HINFO ns_t_hinfo
409 #define T_MINFO ns_t_minfo
410 #define T_MX ns_t_mx
411 #define T_TXT ns_t_txt
412 #define T_RP ns_t_rp
413 #define T_AFSDB ns_t_afsdb
414 #define T_X25 ns_t_x25
415 #define T_ISDN ns_t_isdn
416 #define T_RT ns_t_rt
417 #define T_NSAP ns_t_nsap
418 #define T_NSAP_PTR ns_t_nsap_ptr
419 #define T_SIG ns_t_sig
420 #define T_KEY ns_t_key
421 #define T_PX ns_t_px
422 #define T_GPOS ns_t_gpos
423 #define T_AAAA ns_t_aaaa
424 #define T_LOC ns_t_loc
425 #define T_NXT ns_t_nxt
426 #define T_EID ns_t_eid
427 #define T_NIMLOC ns_t_nimloc
428 #define T_SRV ns_t_srv
429 #define T_ATMA ns_t_atma
430 #define T_NAPTR ns_t_naptr
431 #define T_A6 ns_t_a6
432 #define T_DNAME ns_t_dname
433 #define T_TSIG ns_t_tsig
434 #define T_IXFR ns_t_ixfr
435 #define T_AXFR ns_t_axfr
436 #define T_MAILB ns_t_mailb
437 #define T_MAILA ns_t_maila
438 #define T_ANY ns_t_any
439
440 #define C_IN ns_c_in
441 #define C_CHAOS ns_c_chaos
442 #define C_HS ns_c_hs
443 #define C_NONE ns_c_none
444 #define C_ANY ns_c_any
445
446 #define GETSHORT NS_GET16
447 #define GETLONG NS_GET32
448 #define PUTSHORT NS_PUT16
449 #define PUTLONG NS_PUT32
450
451 #ifdef __cplusplus
452 }
453 #endif
454
455 #endif
456