1#ifndef _ARPA_NAMESER_H
2#define _ARPA_NAMESER_H
3
4#ifdef __cplusplus
5extern "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
28typedef 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
39typedef 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
48struct _ns_flagdata { int mask, shift; };
49extern 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
59typedef 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
75typedef 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
89typedef 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
98typedef 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
117typedef enum __ns_update_operation {
118 ns_uop_delete = 0,
119 ns_uop_add = 1,
120 ns_uop_max = 2
121} ns_update_operation;
122
123struct ns_tsig_key {
124 char name[NS_MAXDNAME], alg[NS_MAXDNAME];
125 unsigned char *data;
126 int len;
127};
128typedef struct ns_tsig_key ns_tsig_key;
129
130struct 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};
137typedef 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
147typedef 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_ds = 43,
192 ns_t_sshfp = 44,
193 ns_t_ipseckey = 45,
194 ns_t_rrsig = 46,
195 ns_t_nsec = 47,
196 ns_t_dnskey = 48,
197 ns_t_dhcid = 49,
198 ns_t_nsec3 = 50,
199 ns_t_nsec3param = 51,
200 ns_t_tlsa = 52,
201 ns_t_smimea = 53,
202 ns_t_hip = 55,
203 ns_t_ninfo = 56,
204 ns_t_rkey = 57,
205 ns_t_talink = 58,
206 ns_t_cds = 59,
207 ns_t_cdnskey = 60,
208 ns_t_openpgpkey = 61,
209 ns_t_csync = 62,
210 ns_t_spf = 99,
211 ns_t_uinfo = 100,
212 ns_t_uid = 101,
213 ns_t_gid = 102,
214 ns_t_unspec = 103,
215 ns_t_nid = 104,
216 ns_t_l32 = 105,
217 ns_t_l64 = 106,
218 ns_t_lp = 107,
219 ns_t_eui48 = 108,
220 ns_t_eui64 = 109,
221 ns_t_tkey = 249,
222 ns_t_tsig = 250,
223 ns_t_ixfr = 251,
224 ns_t_axfr = 252,
225 ns_t_mailb = 253,
226 ns_t_maila = 254,
227 ns_t_any = 255,
228 ns_t_zxfr = 256,
229 ns_t_uri = 256,
230 ns_t_caa = 257,
231 ns_t_avc = 258,
232 ns_t_ta = 32768,
233 ns_t_dlv = 32769,
234 ns_t_max = 65536
235} ns_type;
236
237#define ns_t_qt_p(t) (ns_t_xfr_p(t) || (t) == ns_t_any || \
238 (t) == ns_t_mailb || (t) == ns_t_maila)
239#define ns_t_mrr_p(t) ((t) == ns_t_tsig || (t) == ns_t_opt)
240#define ns_t_rr_p(t) (!ns_t_qt_p(t) && !ns_t_mrr_p(t))
241#define ns_t_udp_p(t) ((t) != ns_t_axfr && (t) != ns_t_zxfr)
242#define ns_t_xfr_p(t) ((t) == ns_t_axfr || (t) == ns_t_ixfr || \
243 (t) == ns_t_zxfr)
244
245typedef enum __ns_class {
246 ns_c_invalid = 0,
247 ns_c_in = 1,
248 ns_c_2 = 2,
249 ns_c_chaos = 3,
250 ns_c_hs = 4,
251 ns_c_none = 254,
252 ns_c_any = 255,
253 ns_c_max = 65536
254} ns_class;
255
256typedef enum __ns_key_types {
257 ns_kt_rsa = 1,
258 ns_kt_dh = 2,
259 ns_kt_dsa = 3,
260 ns_kt_private = 254
261} ns_key_types;
262
263typedef enum __ns_cert_types {
264 cert_t_pkix = 1,
265 cert_t_spki = 2,
266 cert_t_pgp = 3,
267 cert_t_url = 253,
268 cert_t_oid = 254
269} ns_cert_types;
270
271#define NS_KEY_TYPEMASK 0xC000
272#define NS_KEY_TYPE_AUTH_CONF 0x0000
273#define NS_KEY_TYPE_CONF_ONLY 0x8000
274#define NS_KEY_TYPE_AUTH_ONLY 0x4000
275#define NS_KEY_TYPE_NO_KEY 0xC000
276#define NS_KEY_NO_AUTH 0x8000
277#define NS_KEY_NO_CONF 0x4000
278#define NS_KEY_RESERVED2 0x2000
279#define NS_KEY_EXTENDED_FLAGS 0x1000
280#define NS_KEY_RESERVED4 0x0800
281#define NS_KEY_RESERVED5 0x0400
282#define NS_KEY_NAME_TYPE 0x0300
283#define NS_KEY_NAME_USER 0x0000
284#define NS_KEY_NAME_ENTITY 0x0200
285#define NS_KEY_NAME_ZONE 0x0100
286#define NS_KEY_NAME_RESERVED 0x0300
287#define NS_KEY_RESERVED8 0x0080
288#define NS_KEY_RESERVED9 0x0040
289#define NS_KEY_RESERVED10 0x0020
290#define NS_KEY_RESERVED11 0x0010
291#define NS_KEY_SIGNATORYMASK 0x000F
292#define NS_KEY_RESERVED_BITMASK ( NS_KEY_RESERVED2 | \
293 NS_KEY_RESERVED4 | \
294 NS_KEY_RESERVED5 | \
295 NS_KEY_RESERVED8 | \
296 NS_KEY_RESERVED9 | \
297 NS_KEY_RESERVED10 | \
298 NS_KEY_RESERVED11 )
299#define NS_KEY_RESERVED_BITMASK2 0xFFFF
300#define NS_ALG_MD5RSA 1
301#define NS_ALG_DH 2
302#define NS_ALG_DSA 3
303#define NS_ALG_DSS NS_ALG_DSA
304#define NS_ALG_EXPIRE_ONLY 253
305#define NS_ALG_PRIVATE_OID 254
306
307#define NS_KEY_PROT_TLS 1
308#define NS_KEY_PROT_EMAIL 2
309#define NS_KEY_PROT_DNSSEC 3
310#define NS_KEY_PROT_IPSEC 4
311#define NS_KEY_PROT_ANY 255
312
313#define NS_MD5RSA_MIN_BITS 512
314#define NS_MD5RSA_MAX_BITS 4096
315#define NS_MD5RSA_MAX_BYTES ((NS_MD5RSA_MAX_BITS+7/8)*2+3)
316#define NS_MD5RSA_MAX_BASE64 (((NS_MD5RSA_MAX_BYTES+2)/3)*4)
317#define NS_MD5RSA_MIN_SIZE ((NS_MD5RSA_MIN_BITS+7)/8)
318#define NS_MD5RSA_MAX_SIZE ((NS_MD5RSA_MAX_BITS+7)/8)
319
320#define NS_DSA_SIG_SIZE 41
321#define NS_DSA_MIN_SIZE 213
322#define NS_DSA_MAX_BYTES 405
323
324#define NS_SIG_TYPE 0
325#define NS_SIG_ALG 2
326#define NS_SIG_LABELS 3
327#define NS_SIG_OTTL 4
328#define NS_SIG_EXPIR 8
329#define NS_SIG_SIGNED 12
330#define NS_SIG_FOOT 16
331#define NS_SIG_SIGNER 18
332#define NS_NXT_BITS 8
333#define NS_NXT_BIT_SET( n,p) (p[(n)/NS_NXT_BITS] |= (0x80>>((n)%NS_NXT_BITS)))
334#define NS_NXT_BIT_CLEAR(n,p) (p[(n)/NS_NXT_BITS] &= ~(0x80>>((n)%NS_NXT_BITS)))
335#define NS_NXT_BIT_ISSET(n,p) (p[(n)/NS_NXT_BITS] & (0x80>>((n)%NS_NXT_BITS)))
336#define NS_NXT_MAX 127
337
338#define NS_OPT_DNSSEC_OK 0x8000U
339#define NS_OPT_NSID 3
340
341#define NS_GET16(s, cp) (void)((s) = ns_get16(((cp)+=2)-2))
342#define NS_GET32(l, cp) (void)((l) = ns_get32(((cp)+=4)-4))
343#define NS_PUT16(s, cp) ns_put16((s), ((cp)+=2)-2)
344#define NS_PUT32(l, cp) ns_put32((l), ((cp)+=4)-4)
345
346unsigned ns_get16(const unsigned char *);
347unsigned long ns_get32(const unsigned char *);
348void ns_put16(unsigned, unsigned char *);
349void ns_put32(unsigned long, unsigned char *);
350
351int ns_initparse(const unsigned char *, int, ns_msg *);
352int ns_parserr(ns_msg *, ns_sect, int, ns_rr *);
353int ns_skiprr(const unsigned char *, const unsigned char *, ns_sect, int);
354int ns_name_uncompress(const unsigned char *, const unsigned char *, const unsigned char *, char *, size_t);
355
356
357#define __BIND 19950621
358
359typedef struct {
360 unsigned id :16;
361#if __BYTE_ORDER == __BIG_ENDIAN
362 unsigned qr: 1;
363 unsigned opcode: 4;
364 unsigned aa: 1;
365 unsigned tc: 1;
366 unsigned rd: 1;
367 unsigned ra: 1;
368 unsigned unused :1;
369 unsigned ad: 1;
370 unsigned cd: 1;
371 unsigned rcode :4;
372#else
373 unsigned rd :1;
374 unsigned tc :1;
375 unsigned aa :1;
376 unsigned opcode :4;
377 unsigned qr :1;
378 unsigned rcode :4;
379 unsigned cd: 1;
380 unsigned ad: 1;
381 unsigned unused :1;
382 unsigned ra :1;
383#endif
384 unsigned qdcount :16;
385 unsigned ancount :16;
386 unsigned nscount :16;
387 unsigned arcount :16;
388} HEADER;
389
390#define PACKETSZ NS_PACKETSZ
391#define MAXDNAME NS_MAXDNAME
392#define MAXCDNAME NS_MAXCDNAME
393#define MAXLABEL NS_MAXLABEL
394#define HFIXEDSZ NS_HFIXEDSZ
395#define QFIXEDSZ NS_QFIXEDSZ
396#define RRFIXEDSZ NS_RRFIXEDSZ
397#define INT32SZ NS_INT32SZ
398#define INT16SZ NS_INT16SZ
399#define INT8SZ NS_INT8SZ
400#define INADDRSZ NS_INADDRSZ
401#define IN6ADDRSZ NS_IN6ADDRSZ
402#define INDIR_MASK NS_CMPRSFLGS
403#define NAMESERVER_PORT NS_DEFAULTPORT
404
405#define S_ZONE ns_s_zn
406#define S_PREREQ ns_s_pr
407#define S_UPDATE ns_s_ud
408#define S_ADDT ns_s_ar
409
410#define QUERY ns_o_query
411#define IQUERY ns_o_iquery
412#define STATUS ns_o_status
413#define NS_NOTIFY_OP ns_o_notify
414#define NS_UPDATE_OP ns_o_update
415
416#define NOERROR ns_r_noerror
417#define FORMERR ns_r_formerr
418#define SERVFAIL ns_r_servfail
419#define NXDOMAIN ns_r_nxdomain
420#define NOTIMP ns_r_notimpl
421#define REFUSED ns_r_refused
422#define YXDOMAIN ns_r_yxdomain
423#define YXRRSET ns_r_yxrrset
424#define NXRRSET ns_r_nxrrset
425#define NOTAUTH ns_r_notauth
426#define NOTZONE ns_r_notzone
427
428#define DELETE ns_uop_delete
429#define ADD ns_uop_add
430
431#define T_A ns_t_a
432#define T_NS ns_t_ns
433#define T_MD ns_t_md
434#define T_MF ns_t_mf
435#define T_CNAME ns_t_cname
436#define T_SOA ns_t_soa
437#define T_MB ns_t_mb
438#define T_MG ns_t_mg
439#define T_MR ns_t_mr
440#define T_NULL ns_t_null
441#define T_WKS ns_t_wks
442#define T_PTR ns_t_ptr
443#define T_HINFO ns_t_hinfo
444#define T_MINFO ns_t_minfo
445#define T_MX ns_t_mx
446#define T_TXT ns_t_txt
447#define T_RP ns_t_rp
448#define T_AFSDB ns_t_afsdb
449#define T_X25 ns_t_x25
450#define T_ISDN ns_t_isdn
451#define T_RT ns_t_rt
452#define T_NSAP ns_t_nsap
453#define T_NSAP_PTR ns_t_nsap_ptr
454#define T_SIG ns_t_sig
455#define T_KEY ns_t_key
456#define T_PX ns_t_px
457#define T_GPOS ns_t_gpos
458#define T_AAAA ns_t_aaaa
459#define T_LOC ns_t_loc
460#define T_NXT ns_t_nxt
461#define T_EID ns_t_eid
462#define T_NIMLOC ns_t_nimloc
463#define T_SRV ns_t_srv
464#define T_ATMA ns_t_atma
465#define T_NAPTR ns_t_naptr
466#define T_A6 ns_t_a6
467#define T_DNAME ns_t_dname
468#define T_DS ns_t_ds
469#define T_SSHFP ns_t_sshfp
470#define T_IPSECKEY ns_t_ipseckey
471#define T_RRSIG ns_t_rrsig
472#define T_NSEC ns_t_nsec
473#define T_DNSKEY ns_t_dnskey
474#define T_DHCID ns_t_dhcid
475#define T_NSEC3 ns_t_nsec3
476#define T_NSEC3PARAM ns_t_nsec3param
477#define T_TLSA ns_t_tlsa
478#define T_SMIMEA ns_t_smimea
479#define T_HIP ns_t_hip
480#define T_NINFO ns_t_ninfo
481#define T_RKEY ns_t_rkey
482#define T_TALINK ns_t_talink
483#define T_CDS ns_t_cds
484#define T_CDNSKEY ns_t_cdnskey
485#define T_OPENPGPKEY ns_t_openpgpkey
486#define T_CSYNC ns_t_csync
487#define T_SPF ns_t_spf
488#define T_UINFO ns_t_uinfo
489#define T_UID ns_t_uid
490#define T_GID ns_t_gid
491#define T_UNSPEC ns_t_unspec
492#define T_NID ns_t_nid
493#define T_L32 ns_t_l32
494#define T_L64 ns_t_l64
495#define T_LP ns_t_lp
496#define T_EUI48 ns_t_eui48
497#define T_EUI64 ns_t_eui64
498#define T_TKEY ns_t_tkey
499#define T_TSIG ns_t_tsig
500#define T_IXFR ns_t_ixfr
501#define T_AXFR ns_t_axfr
502#define T_MAILB ns_t_mailb
503#define T_MAILA ns_t_maila
504#define T_ANY ns_t_any
505#define T_URI ns_t_uri
506#define T_CAA ns_t_caa
507#define T_AVC ns_t_avc
508#define T_TA ns_t_ta
509#define T_DLV ns_t_dlv
510
511#define C_IN ns_c_in
512#define C_CHAOS ns_c_chaos
513#define C_HS ns_c_hs
514#define C_NONE ns_c_none
515#define C_ANY ns_c_any
516
517#define GETSHORT NS_GET16
518#define GETLONG NS_GET32
519#define PUTSHORT NS_PUT16
520#define PUTLONG NS_PUT32
521
522#ifdef __cplusplus
523}
524#endif
525
526#endif