Annotation of embedaddon/dhcp/includes/arpa/nameser.h, revision 1.1.1.1
1.1 misho 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: * 3. All advertising materials mentioning features or use of this software
14: * must display the following acknowledgement:
15: * This product includes software developed by the University of
16: * California, Berkeley and its contributors.
17: * 4. Neither the name of the University nor the names of its contributors
18: * may be used to endorse or promote products derived from this software
19: * without specific prior written permission.
20: *
21: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31: * SUCH DAMAGE.
32: */
33:
34: /*
35: * Copyright (c) 2004,2009 by Internet Systems Consortium, Inc. ("ISC")
36: * Copyright (c) 1996-2003 by Internet Software Consortium
37: *
38: * Permission to use, copy, modify, and distribute this software for any
39: * purpose with or without fee is hereby granted, provided that the above
40: * copyright notice and this permission notice appear in all copies.
41: *
42: * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
43: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
44: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR
45: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
46: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
47: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
48: * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
49: *
50: * Internet Systems Consortium, Inc.
51: * 950 Charter Street
52: * Redwood City, CA 94063
53: * <info@isc.org>
54: * https://www.isc.org/
55: */
56:
57: /*
1.1.1.1 ! misho 58: * $Id: nameser.h,v 1.5.786.2 2009/07/24 22:04:52 sar Exp $
1.1 misho 59: */
60:
61: #ifndef _ARPA_NAMESER_H_
62: #define _ARPA_NAMESER_H_
63:
64: /*
65: * Revision information. This is the release date in YYYYMMDD format.
66: * It can change every day so the right thing to do with it is use it
67: * in preprocessor commands such as "#if (__NAMESER > 19931104)". Do not
68: * compare for equality; rather, use it to determine whether your libbind.a
69: * contains a new enough lib/nameser/ to support the feature you need.
70: */
71:
72: #define __NAMESER 19991006 /* New interface version stamp. */
73:
74: /*
75: * Define constants based on RFC 883, RFC 1034, RFC 1035
76: */
77: #define NS_PACKETSZ 512 /* maximum packet size */
78: #define NS_MAXDNAME 1025 /* maximum domain name */
79: #define NS_MAXCDNAME 255 /* maximum compressed domain name */
80: #define NS_MAXLABEL 63 /* maximum length of domain label */
81: #define NS_HFIXEDSZ 12 /* #/bytes of fixed data in header */
82: #define NS_QFIXEDSZ 4 /* #/bytes of fixed data in query */
83: #define NS_RRFIXEDSZ 10 /* #/bytes of fixed data in r record */
84: #define NS_INT32SZ 4 /* #/bytes of data in a u_int32_t */
85: #define NS_INT16SZ 2 /* #/bytes of data in a u_int16_t */
86: #define NS_INT8SZ 1 /* #/bytes of data in a u_int8_t */
87: #define NS_INADDRSZ 4 /* IPv4 T_A */
88: #define NS_IN6ADDRSZ 16 /* IPv6 T_AAAA */
89: #define NS_CMPRSFLGS 0xc0 /* Flag bits indicating name compression. */
90: #define NS_DEFAULTPORT 53 /* For both TCP and UDP. */
91:
92: /*
93: * These can be expanded with synonyms, just keep ns_parse.c:ns_parserecord()
94: * in synch with it.
95: */
96: typedef enum __ns_sect {
97: ns_s_qd = 0, /* Query: Question. */
98: ns_s_zn = 0, /* Update: Zone. */
99: ns_s_an = 1, /* Query: Answer. */
100: ns_s_pr = 1, /* Update: Prerequisites. */
101: ns_s_ns = 2, /* Query: Name servers. */
102: ns_s_ud = 2, /* Update: Update. */
103: ns_s_ar = 3, /* Query|Update: Additional records. */
104: ns_s_max = 4
105: } ns_sect;
106:
107: /*
108: * This is a message handle. It is caller allocated and has no dynamic data.
109: * This structure is intended to be opaque to all but ns_parse.c, thus the
110: * leading _'s on the member names. Use the accessor functions, not the _'s.
111: */
112: typedef struct __ns_msg {
113: const u_int8_t *_msg, *_eom;
114: u_int16_t _id, _flags, _counts[ns_s_max];
115: const u_int8_t *_sections[ns_s_max];
116: ns_sect _sect;
117: int _rrnum;
118: const u_int8_t *_ptr;
119: } ns_msg;
120:
121: /* Private data structure - do not use from outside library. */
122: struct _ns_flagdata { int mask, shift; };
123: extern struct _ns_flagdata _ns_flagdata[];
124:
125: /* Accessor macros - this is part of the public interface. */
126: #define ns_msg_getflag(handle, flag) ( \
127: ((handle)._flags & _ns_flagdata[flag].mask) \
128: >> _ns_flagdata[flag].shift \
129: )
130: #define ns_msg_id(handle) ((handle)._id + 0)
131: #define ns_msg_base(handle) ((handle)._msg + 0)
132: #define ns_msg_end(handle) ((handle)._eom + 0)
133: #define ns_msg_size(handle) ((handle)._eom - (handle)._msg)
134: #define ns_msg_count(handle, section) ((handle)._counts[section] + 0)
135:
136: /*
137: * This is a parsed record. It is caller allocated and has no dynamic data.
138: */
139: typedef struct __ns_rr {
140: char name[NS_MAXDNAME];
141: u_int16_t type;
142: u_int16_t rr_class;
143: u_int32_t ttl;
144: u_int16_t rdlength;
145: const u_int8_t *rdata;
146: } ns_rr;
147:
148: /* Accessor macros - this is part of the public interface. */
149: #define ns_rr_name(rr) (((rr).name[0] != '\0') ? (rr).name : ".")
150: #define ns_rr_type(rr) ((ns_type)((rr).type + 0))
151: #define ns_rr_class(rr) ((ns_class)((rr).rr_class + 0))
152: #define ns_rr_ttl(rr) ((rr).ttl + 0)
153: #define ns_rr_rdlen(rr) ((rr).rdlength + 0)
154: #define ns_rr_rdata(rr) ((rr).rdata + 0)
155:
156: /*
157: * These don't have to be in the same order as in the packet flags word,
158: * and they can even overlap in some cases, but they will need to be kept
159: * in synch with ns_parse.c:ns_flagdata[].
160: */
161: typedef enum __ns_flag {
162: ns_f_qr, /* Question/Response. */
163: ns_f_opcode, /* Operation code. */
164: ns_f_aa, /* Authoritative Answer. */
165: ns_f_tc, /* Truncation occurred. */
166: ns_f_rd, /* Recursion Desired. */
167: ns_f_ra, /* Recursion Available. */
168: ns_f_z, /* MBZ. */
169: ns_f_ad, /* Authentic Data (DNSSEC). */
170: ns_f_cd, /* Checking Disabled (DNSSEC). */
171: ns_f_rcode, /* Response code. */
172: ns_f_max
173: } ns_flag;
174:
175: /*
176: * Currently defined opcodes.
177: */
178: typedef enum __ns_opcode {
179: ns_o_query = 0, /* Standard query. */
180: ns_o_iquery = 1, /* Inverse query (deprecated/unsupported). */
181: ns_o_status = 2, /* Name server status query (unsupported). */
182: /* Opcode 3 is undefined/reserved. */
183: ns_o_notify = 4, /* Zone change notification. */
184: ns_o_update = 5, /* Zone update message. */
185: ns_o_max = 6
186: } ns_opcode;
187:
188: /*
189: * Currently defined response codes.
190: */
191: typedef enum __ns_rcode {
192: ns_r_noerror = 0, /* No error occurred. */
193: ns_r_formerr = 1, /* Format error. */
194: ns_r_servfail = 2, /* Server failure. */
195: ns_r_nxdomain = 3, /* Name error. */
196: ns_r_notimpl = 4, /* Unimplemented. */
197: ns_r_refused = 5, /* Operation refused. */
198: /* these are for BIND_UPDATE */
199: ns_r_yxdomain = 6, /* Name exists */
200: ns_r_yxrrset = 7, /* RRset exists */
201: ns_r_nxrrset = 8, /* RRset does not exist */
202: ns_r_notauth = 9, /* Not authoritative for zone */
203: ns_r_notzone = 10, /* Zone of record different from zone section */
204: ns_r_max = 11,
205: /* The following are TSIG extended errors */
206: ns_r_badsig = 16,
207: ns_r_badkey = 17,
208: ns_r_badtime = 18
209: } ns_rcode;
210:
211: /* BIND_UPDATE */
212: typedef enum __ns_update_operation {
213: ns_uop_delete = 0,
214: ns_uop_add = 1,
215: ns_uop_max = 2
216: } ns_update_operation;
217:
218: /*
219: * This structure is used for TSIG authenticated messages
220: */
221: struct ns_tsig_key {
222: char name[NS_MAXDNAME], alg[NS_MAXDNAME];
223: unsigned char *data;
224: unsigned len;
225: };
226: typedef struct ns_tsig_key ns_tsig_key;
227:
228: /*
229: * This structure is used for TSIG authenticated TCP messages
230: */
231: struct ns_tcp_tsig_state {
232: int counter;
233: struct dst_key *key;
234: void *ctx;
235: unsigned char sig[NS_PACKETSZ];
236: unsigned siglen;
237: };
238: typedef struct ns_tcp_tsig_state ns_tcp_tsig_state;
239:
240: #define NS_TSIG_FUDGE 300
241: #define NS_TSIG_TCP_COUNT 100
242: #define NS_TSIG_ALG_HMAC_MD5 "HMAC-MD5.SIG-ALG.REG.INT"
243:
244: #define NS_TSIG_ERROR_NO_TSIG -10
245: #define NS_TSIG_ERROR_NO_SPACE -11
246: #define NS_TSIG_ERROR_FORMERR -12
247:
248: /*
249: * Currently defined type values for resources and queries.
250: */
251: typedef enum __ns_type {
252: ns_t_invalid = 0, /* Cookie. */
253: ns_t_a = 1, /* Host address. */
254: ns_t_ns = 2, /* Authoritative server. */
255: ns_t_md = 3, /* Mail destination. */
256: ns_t_mf = 4, /* Mail forwarder. */
257: ns_t_cname = 5, /* Canonical name. */
258: ns_t_soa = 6, /* Start of authority zone. */
259: ns_t_mb = 7, /* Mailbox domain name. */
260: ns_t_mg = 8, /* Mail group member. */
261: ns_t_mr = 9, /* Mail rename name. */
262: ns_t_null = 10, /* Null resource record. */
263: ns_t_wks = 11, /* Well known service. */
264: ns_t_ptr = 12, /* Domain name pointer. */
265: ns_t_hinfo = 13, /* Host information. */
266: ns_t_minfo = 14, /* Mailbox information. */
267: ns_t_mx = 15, /* Mail routing information. */
268: ns_t_txt = 16, /* Text strings. */
269: ns_t_rp = 17, /* Responsible person. */
270: ns_t_afsdb = 18, /* AFS cell database. */
271: ns_t_x25 = 19, /* X_25 calling address. */
272: ns_t_isdn = 20, /* ISDN calling address. */
273: ns_t_rt = 21, /* Router. */
274: ns_t_nsap = 22, /* NSAP address. */
275: ns_t_nsap_ptr = 23, /* Reverse NSAP lookup (deprecated). */
276: ns_t_sig = 24, /* Security signature. */
277: ns_t_key = 25, /* Security key. */
278: ns_t_px = 26, /* X.400 mail mapping. */
279: ns_t_gpos = 27, /* Geographical position (withdrawn). */
280: ns_t_aaaa = 28, /* Ip6 Address. */
281: ns_t_loc = 29, /* Location Information. */
282: ns_t_nxt = 30, /* Next domain (security). */
283: ns_t_eid = 31, /* Endpoint identifier. */
284: ns_t_nimloc = 32, /* Nimrod Locator. */
285: ns_t_srv = 33, /* Server Selection. */
286: ns_t_atma = 34, /* ATM Address */
287: ns_t_naptr = 35, /* Naming Authority PoinTeR */
288: ns_t_kx = 36, /* Key Exchange */
289: ns_t_cert = 37, /* Certification record */
290: ns_t_a6 = 38, /* IPv6 address (deprecates AAAA) */
291: ns_t_dname = 39, /* Non-terminal DNAME (for IPv6) */
292: ns_t_sink = 40, /* Kitchen sink (experimentatl) */
293: ns_t_opt = 41, /* EDNS0 option (meta-RR) */
294: ns_t_tsig = 250, /* Transaction signature. */
295: ns_t_ixfr = 251, /* Incremental zone transfer. */
296: ns_t_axfr = 252, /* Transfer zone of authority. */
297: ns_t_mailb = 253, /* Transfer mailbox records. */
298: ns_t_maila = 254, /* Transfer mail agent records. */
299: ns_t_any = 255, /* Wildcard match. */
300: ns_t_zxfr = 256, /* BIND-specific, nonstandard. */
301: ns_t_max = 65536
302: } ns_type;
303:
304: /* Exclusively a QTYPE? (not also an RTYPE) */
305: #define ns_t_qt_p(t) (ns_t_xfr_p(t) || (t) == ns_t_any || \
306: (t) == ns_t_mailb || (t) == ns_t_maila)
307: /* Some kind of meta-RR? (not a QTYPE, but also not an RTYPE) */
308: #define ns_t_mrr_p(t) ((t) == ns_t_tsig || (t) == ns_t_opt)
309: /* Exclusively an RTYPE? (not also a QTYPE or a meta-RR) */
310: #define ns_t_rr_p(t) (!ns_t_qt_p(t) && !ns_t_mrr_p(t))
311: #define ns_t_udp_p(t) ((t) != ns_t_axfr && (t) != ns_t_zxfr)
312: #define ns_t_xfr_p(t) ((t) == ns_t_axfr || (t) == ns_t_ixfr || \
313: (t) == ns_t_zxfr)
314:
315: /*
316: * Values for class field
317: */
318: typedef enum __ns_class {
319: ns_c_invalid = 0, /* Cookie. */
320: ns_c_in = 1, /* Internet. */
321: ns_c_2 = 2, /* unallocated/unsupported. */
322: ns_c_chaos = 3, /* MIT Chaos-net. */
323: ns_c_hs = 4, /* MIT Hesiod. */
324: /* Query class values which do not appear in resource records */
325: ns_c_none = 254, /* for prereq. sections in update requests */
326: ns_c_any = 255, /* Wildcard match. */
327: ns_c_max = 65536
328: } ns_class;
329:
330: /* DNSSEC constants. */
331:
332: typedef enum __ns_key_types {
333: ns_kt_rsa = 1, /* key type RSA/MD5 */
334: ns_kt_dh = 2, /* Diffie Hellman */
335: ns_kt_dsa = 3, /* Digital Signature Standard (MANDATORY) */
336: ns_kt_private = 254 /* Private key type starts with OID */
337: } ns_key_types;
338:
339: typedef enum __ns_cert_types {
340: cert_t_pkix = 1, /* PKIX (X.509v3) */
341: cert_t_spki = 2, /* SPKI */
342: cert_t_pgp = 3, /* PGP */
343: cert_t_url = 253, /* URL private type */
344: cert_t_oid = 254 /* OID private type */
345: } ns_cert_types;
346:
347: /* Flags field of the KEY RR rdata. */
348: #define NS_KEY_TYPEMASK 0xC000 /* Mask for "type" bits */
349: #define NS_KEY_TYPE_AUTH_CONF 0x0000 /* Key usable for both */
350: #define NS_KEY_TYPE_CONF_ONLY 0x8000 /* Key usable for confidentiality */
351: #define NS_KEY_TYPE_AUTH_ONLY 0x4000 /* Key usable for authentication */
352: #define NS_KEY_TYPE_NO_KEY 0xC000 /* No key usable for either; no key */
353: /* The type bits can also be interpreted independently, as single bits: */
354: #define NS_KEY_NO_AUTH 0x8000 /* Key unusable for authentication */
355: #define NS_KEY_NO_CONF 0x4000 /* Key unusable for confidentiality */
356: #define NS_KEY_RESERVED2 0x2000 /* Security is *mandatory* if bit=0 */
357: #define NS_KEY_EXTENDED_FLAGS 0x1000 /* reserved - must be zero */
358: #define NS_KEY_RESERVED4 0x0800 /* reserved - must be zero */
359: #define NS_KEY_RESERVED5 0x0400 /* reserved - must be zero */
360: #define NS_KEY_NAME_TYPE 0x0300 /* these bits determine the type */
361: #define NS_KEY_NAME_USER 0x0000 /* key is assoc. with user */
362: #define NS_KEY_NAME_ENTITY 0x0200 /* key is assoc. with entity eg host */
363: #define NS_KEY_NAME_ZONE 0x0100 /* key is zone key */
364: #define NS_KEY_NAME_RESERVED 0x0300 /* reserved meaning */
365: #define NS_KEY_RESERVED8 0x0080 /* reserved - must be zero */
366: #define NS_KEY_RESERVED9 0x0040 /* reserved - must be zero */
367: #define NS_KEY_RESERVED10 0x0020 /* reserved - must be zero */
368: #define NS_KEY_RESERVED11 0x0010 /* reserved - must be zero */
369: #define NS_KEY_SIGNATORYMASK 0x000F /* key can sign RR's of same name */
370: #define NS_KEY_RESERVED_BITMASK ( NS_KEY_RESERVED2 | \
371: NS_KEY_RESERVED4 | \
372: NS_KEY_RESERVED5 | \
373: NS_KEY_RESERVED8 | \
374: NS_KEY_RESERVED9 | \
375: NS_KEY_RESERVED10 | \
376: NS_KEY_RESERVED11 )
377: #define NS_KEY_RESERVED_BITMASK2 0xFFFF /* no bits defined here */
378:
379: /* The Algorithm field of the KEY and SIG RR's is an integer, {1..254} */
380: #define NS_ALG_MD5RSA 1 /* MD5 with RSA */
381: #define NS_ALG_DH 2 /* Diffie Hellman KEY */
382: #define NS_ALG_DSA 3 /* DSA KEY */
383: #define NS_ALG_DSS NS_ALG_DSA
384: #define NS_ALG_EXPIRE_ONLY 253 /* No alg, no security */
385: #define NS_ALG_PRIVATE_OID 254 /* Key begins with OID giving alg */
386:
387: /* Protocol values */
388: /* value 0 is reserved */
389: #define NS_KEY_PROT_TLS 1
390: #define NS_KEY_PROT_EMAIL 2
391: #define NS_KEY_PROT_DNSSEC 3
392: #define NS_KEY_PROT_IPSEC 4
393: #define NS_KEY_PROT_ANY 255
394:
395: /* Signatures */
396: #define NS_MD5RSA_MIN_BITS 512 /* Size of a mod or exp in bits */
397: #define NS_MD5RSA_MAX_BITS 2552
398: /* Total of binary mod and exp */
399: #define NS_MD5RSA_MAX_BYTES ((NS_MD5RSA_MAX_BITS+7/8)*2+3)
400: /* Max length of text sig block */
401: #define NS_MD5RSA_MAX_BASE64 (((NS_MD5RSA_MAX_BYTES+2)/3)*4)
402: #define NS_MD5RSA_MIN_SIZE ((NS_MD5RSA_MIN_BITS+7)/8)
403: #define NS_MD5RSA_MAX_SIZE ((NS_MD5RSA_MAX_BITS+7)/8)
404:
405: #define NS_DSA_SIG_SIZE 41
406: #define NS_DSA_MIN_SIZE 213
407: #define NS_DSA_MAX_BYTES 405
408:
409: /* Offsets into SIG record rdata to find various values */
410: #define NS_SIG_TYPE 0 /* Type flags */
411: #define NS_SIG_ALG 2 /* Algorithm */
412: #define NS_SIG_LABELS 3 /* How many labels in name */
413: #define NS_SIG_OTTL 4 /* Original TTL */
414: #define NS_SIG_EXPIR 8 /* Expiration time */
415: #define NS_SIG_SIGNED 12 /* Signature time */
416: #define NS_SIG_FOOT 16 /* Key footprint */
417: #define NS_SIG_SIGNER 18 /* Domain name of who signed it */
418:
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: * Inline versions of get/put short/long. Pointer is advanced.
428: */
429: #define NS_GET16(s, cp) do { \
430: register u_int8_t *t_cp = (u_int8_t *)(cp); \
431: (s) = ((u_int16_t)t_cp[0] << 8) \
432: | ((u_int16_t)t_cp[1]) \
433: ; \
434: (cp) += NS_INT16SZ; \
435: } while (0)
436:
437: #define NS_GET32(l, cp) do { \
438: register u_int8_t *t_cp = (u_int8_t *)(cp); \
439: (l) = ((u_int32_t)t_cp[0] << 24) \
440: | ((u_int32_t)t_cp[1] << 16) \
441: | ((u_int32_t)t_cp[2] << 8) \
442: | ((u_int32_t)t_cp[3]) \
443: ; \
444: (cp) += NS_INT32SZ; \
445: } while (0)
446:
447: #define NS_PUT16(s, cp) do { \
448: register u_int16_t t_s = (u_int16_t)(s); \
449: register u_int8_t *t_cp = (u_int8_t *)(cp); \
450: *t_cp++ = t_s >> 8; \
451: *t_cp = t_s; \
452: (cp) += NS_INT16SZ; \
453: } while (0)
454:
455: #define NS_PUT32(l, cp) do { \
456: register u_int32_t t_l = (u_int32_t)(l); \
457: register u_int8_t *t_cp = (u_int8_t *)(cp); \
458: *t_cp++ = t_l >> 24; \
459: *t_cp++ = t_l >> 16; \
460: *t_cp++ = t_l >> 8; \
461: *t_cp = t_l; \
462: (cp) += NS_INT32SZ; \
463: } while (0)
464:
465: #include <arpa/nameser_compat.h>
466:
467: #endif /* !_ARPA_NAMESER_H_ */
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