Annotation of src/include/resolv.h, Revision 1.3
1.3 ! downsj 1: /* $OpenBSD: resolv.h,v 1.2 1997/03/12 11:21:15 downsj Exp $ */
! 2:
1.1 deraadt 3: /*
1.2 dm 4: * ++Copyright++ 1983, 1987, 1989, 1993
5: * -
6: * Copyright (c) 1983, 1987, 1989, 1993
7: * The Regents of the University of California. All rights reserved.
8: *
1.1 deraadt 9: * Redistribution and use in source and binary forms, with or without
10: * modification, are permitted provided that the following conditions
11: * are met:
12: * 1. Redistributions of source code must retain the above copyright
13: * notice, this list of conditions and the following disclaimer.
14: * 2. Redistributions in binary form must reproduce the above copyright
15: * notice, this list of conditions and the following disclaimer in the
16: * documentation and/or other materials provided with the distribution.
17: * 3. All advertising materials mentioning features or use of this software
18: * must display the following acknowledgement:
1.2 dm 19: * This product includes software developed by the University of
20: * California, Berkeley and its contributors.
1.1 deraadt 21: * 4. Neither the name of the University nor the names of its contributors
22: * may be used to endorse or promote products derived from this software
23: * without specific prior written permission.
1.2 dm 24: *
1.1 deraadt 25: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35: * SUCH DAMAGE.
1.2 dm 36: * -
37: * Portions Copyright (c) 1993 by Digital Equipment Corporation.
38: *
39: * Permission to use, copy, modify, and distribute this software for any
40: * purpose with or without fee is hereby granted, provided that the above
41: * copyright notice and this permission notice appear in all copies, and that
42: * the name of Digital Equipment Corporation not be used in advertising or
43: * publicity pertaining to distribution of the document or software without
44: * specific, written prior permission.
45: *
46: * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
47: * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
48: * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT
49: * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
50: * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
51: * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
52: * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
53: * SOFTWARE.
54: * -
55: * --Copyright--
56: */
57:
58: /*
59: * @(#)resolv.h 8.1 (Berkeley) 6/2/93
1.3 ! downsj 60: * $From: resolv.h,v 8.17 1996/11/26 10:11:20 vixie Exp $
1.1 deraadt 61: */
62:
63: #ifndef _RESOLV_H_
64: #define _RESOLV_H_
65:
1.2 dm 66: #include <sys/param.h>
67: #if (!defined(BSD)) || (BSD < 199306)
68: # include <sys/bitypes.h>
69: #else
70: # include <sys/types.h>
71: #endif
72: #include <sys/cdefs.h>
73: #include <stdio.h>
74:
1.1 deraadt 75: /*
1.3 ! downsj 76: * Revision information. This is the release date in YYYYMMDD format.
! 77: * It can change every day so the right thing to do with it is use it
! 78: * in preprocessor commands such as "#if (__RES > 19931104)". Do not
1.1 deraadt 79: * compare for equality; rather, use it to determine whether your resolver
80: * is new enough to contain a certain feature.
81: */
82:
1.3 ! downsj 83: #define __RES 19960801
1.1 deraadt 84:
85: /*
86: * Resolver configuration file.
87: * Normally not present, but may contain the address of the
88: * inital name server(s) to query and the domain search list.
89: */
90:
91: #ifndef _PATH_RESCONF
92: #define _PATH_RESCONF "/etc/resolv.conf"
93: #endif
94:
95: /*
96: * Global defines and variables for resolver stub.
97: */
98: #define MAXNS 3 /* max # name servers we'll track */
99: #define MAXDFLSRCH 3 /* # default domain levels to try */
100: #define MAXDNSRCH 6 /* max # domains in search path */
101: #define LOCALDOMAINPARTS 2 /* min levels in name that is "local" */
1.3 ! downsj 102: #define MAXDNSLUS 4 /* max # of host lookup types */
1.1 deraadt 103:
104: #define RES_TIMEOUT 5 /* min. seconds between retries */
1.2 dm 105: #define MAXRESOLVSORT 10 /* number of net to sort on */
106: #define RES_MAXNDOTS 15 /* should reflect bit field size */
1.1 deraadt 107:
108: struct __res_state {
109: int retrans; /* retransmition time interval */
110: int retry; /* number of times to retransmit */
1.2 dm 111: u_long options; /* option flags - see below. */
1.1 deraadt 112: int nscount; /* number of name servers */
1.2 dm 113: struct sockaddr_in
114: nsaddr_list[MAXNS]; /* address of name server */
1.1 deraadt 115: #define nsaddr nsaddr_list[0] /* for backward compatibility */
1.3 ! downsj 116: u_short id; /* current message id */
1.1 deraadt 117: char *dnsrch[MAXDNSRCH+1]; /* components of domain to search */
1.3 ! downsj 118: char defdname[256]; /* default domain (deprecated) */
1.2 dm 119: u_long pfcode; /* RES_PRF_ flags - see below. */
120: unsigned ndots:4; /* threshold for initial abs. query */
121: unsigned nsort:4; /* number of elements in sort_list[] */
1.1 deraadt 122: char unused[3];
123: struct {
1.2 dm 124: struct in_addr addr;
125: u_int32_t mask;
1.1 deraadt 126: } sort_list[MAXRESOLVSORT];
1.3 ! downsj 127: char lookups[MAXDNSLUS];
! 128: char pad[68]; /* on an i386 this means 512b total */
1.1 deraadt 129: };
130:
131: /*
1.2 dm 132: * Resolver options (keep these in synch with res_debug.c, please)
1.1 deraadt 133: */
1.2 dm 134: #define RES_INIT 0x00000001 /* address initialized */
135: #define RES_DEBUG 0x00000002 /* print debug messages */
136: #define RES_AAONLY 0x00000004 /* authoritative answers only (!IMPL)*/
137: #define RES_USEVC 0x00000008 /* use virtual circuit */
138: #define RES_PRIMARY 0x00000010 /* query primary server only (!IMPL) */
139: #define RES_IGNTC 0x00000020 /* ignore trucation errors */
140: #define RES_RECURSE 0x00000040 /* recursion desired */
141: #define RES_DEFNAMES 0x00000080 /* use default domain name */
142: #define RES_STAYOPEN 0x00000100 /* Keep TCP socket open */
143: #define RES_DNSRCH 0x00000200 /* search up local domain tree */
144: #define RES_INSECURE1 0x00000400 /* type 1 security disabled */
145: #define RES_INSECURE2 0x00000800 /* type 2 security disabled */
146: #define RES_NOALIASES 0x00001000 /* shuts off HOSTALIASES feature */
1.3 ! downsj 147: #define RES_USE_INET6 0x00002000 /* use/map IPv6 in gethostbyname() */
1.1 deraadt 148:
149: #define RES_DEFAULT (RES_RECURSE | RES_DEFNAMES | RES_DNSRCH)
150:
151: /*
152: * Resolver "pfcode" values. Used by dig.
153: */
1.2 dm 154: #define RES_PRF_STATS 0x00000001
155: /* 0x00000002 */
156: #define RES_PRF_CLASS 0x00000004
157: #define RES_PRF_CMD 0x00000008
158: #define RES_PRF_QUES 0x00000010
159: #define RES_PRF_ANS 0x00000020
160: #define RES_PRF_AUTH 0x00000040
161: #define RES_PRF_ADD 0x00000080
162: #define RES_PRF_HEAD1 0x00000100
163: #define RES_PRF_HEAD2 0x00000200
164: #define RES_PRF_TTLID 0x00000400
165: #define RES_PRF_HEADX 0x00000800
166: #define RES_PRF_QUERY 0x00001000
167: #define RES_PRF_REPLY 0x00002000
168: #define RES_PRF_INIT 0x00004000
169: /* 0x00008000 */
170:
171: /* hooks are still experimental as of 4.9.2 */
172: typedef enum { res_goahead, res_nextns, res_modified, res_done, res_error }
173: res_sendhookact;
174:
175: typedef res_sendhookact (*res_send_qhook)__P((struct sockaddr_in * const *ns,
176: const u_char **query,
177: int *querylen,
178: u_char *ans,
179: int anssiz,
180: int *resplen));
181:
182: typedef res_sendhookact (*res_send_rhook)__P((const struct sockaddr_in *ns,
183: const u_char *query,
184: int querylen,
185: u_char *ans,
186: int anssiz,
187: int *resplen));
1.1 deraadt 188:
1.3 ! downsj 189: struct res_sym {
! 190: int number; /* Identifying number, like T_MX */
! 191: char * name; /* Its symbolic name, like "MX" */
! 192: char * humanname; /* Its fun name, like "mail exchanger" */
! 193: };
! 194:
1.1 deraadt 195: extern struct __res_state _res;
1.3 ! downsj 196: extern const struct res_sym __p_class_syms[];
! 197: extern const struct res_sym __p_type_syms[];
1.1 deraadt 198:
199: /* Private routines shared between libc/net, named, nslookup and others. */
1.3 ! downsj 200: #define res_hnok __res_hnok
! 201: #define res_ownok __res_ownok
! 202: #define res_mailok __res_mailok
! 203: #define res_dnok __res_dnok
! 204: #define sym_ston __sym_ston
! 205: #define sym_ntos __sym_ntos
! 206: #define sym_ntop __sym_ntop
! 207: #define b64_ntop __b64_ntop
! 208: #define b64_pton __b64_pton
! 209: #define loc_ntoa __loc_ntoa
! 210: #define loc_aton __loc_aton
1.1 deraadt 211: #define dn_skipname __dn_skipname
1.3 ! downsj 212: #define fp_resstat __fp_resstat
1.1 deraadt 213: #define fp_query __fp_query
1.2 dm 214: #define fp_nquery __fp_nquery
1.1 deraadt 215: #define hostalias __hostalias
216: #define putlong __putlong
217: #define putshort __putshort
218: #define p_class __p_class
219: #define p_time __p_time
220: #define p_type __p_type
1.3 ! downsj 221: #define p_query __p_query
1.2 dm 222: #define p_cdnname __p_cdnname
223: #define p_cdname __p_cdname
1.3 ! downsj 224: #define p_fqnname __p_fqnname
1.2 dm 225: #define p_fqname __p_fqname
226: #define p_rr __p_rr
227: #define p_option __p_option
1.3 ! downsj 228: #define p_secstodate __p_secstodate
! 229: #define dn_count_labels __dn_count_labels
! 230: #define dn_comp __dn_comp
1.2 dm 231: #define res_randomid __res_randomid
1.3 ! downsj 232: #define res_send __res_send
1.2 dm 233: #define res_isourserver __res_isourserver
234: #define res_nameinquery __res_nameinquery
235: #define res_queriesmatch __res_queriesmatch
1.3 ! downsj 236: #define res_close __res_close
! 237:
! 238: #ifdef BIND_RES_POSIX3
! 239: #define dn_expand __dn_expand
! 240: #define res_init __res_init
! 241: #define res_query __res_query
! 242: #define res_search __res_search
! 243: #define res_querydomain __res_querydomain
! 244: #define res_mkquery __res_mkquery
! 245: #endif
! 246:
1.1 deraadt 247: __BEGIN_DECLS
1.3 ! downsj 248: int res_hnok __P((const char *));
! 249: int res_ownok __P((const char *));
! 250: int res_mailok __P((const char *));
! 251: int res_dnok __P((const char *));
! 252: int sym_ston __P((const struct res_sym *, char *, int *));
! 253: const char * sym_ntos __P((const struct res_sym *, int, int *));
! 254: const char * sym_ntop __P((const struct res_sym *, int, int *));
! 255: int b64_ntop __P((u_char const *, size_t, char *, size_t));
! 256: int b64_pton __P((char const *, u_char *, size_t));
! 257: int loc_aton __P((const char *, u_char *));
! 258: const char * loc_ntoa __P((const u_char *, char *));
! 259: int dn_skipname __P((const u_char *, const u_char *));
! 260: void fp_resstat __P((struct __res_state *, FILE *));
! 261: void fp_query __P((const u_char *, FILE *));
! 262: void fp_nquery __P((const u_char *, int, FILE *));
! 263: const char * hostalias __P((const char *));
! 264: void putlong __P((u_int32_t, u_char *));
! 265: void putshort __P((u_int16_t, u_char *));
! 266: const char * p_class __P((int));
! 267: const char * p_time __P((u_int32_t));
! 268: const char * p_type __P((int));
! 269: void p_query __P((const u_char *));
! 270: const u_char * p_cdnname __P((const u_char *, const u_char *, int, FILE *));
! 271: const u_char * p_cdname __P((const u_char *, const u_char *, FILE *));
! 272: const u_char * p_fqnname __P((const u_char *cp, const u_char *msg,
! 273: int, char *, int));
! 274: const u_char * p_fqname __P((const u_char *, const u_char *, FILE *));
! 275: const u_char * p_rr __P((const u_char *, const u_char *, FILE *));
! 276: const char * p_option __P((u_long option));
! 277: char * p_secstodate __P((u_long));
! 278: int dn_count_labels __P((char *));
! 279: int dn_comp __P((const char *, u_char *, int,
! 280: u_char **, u_char **));
! 281: int dn_expand __P((const u_char *, const u_char *, const u_char *,
! 282: char *, int));
! 283: int res_init __P((void));
! 284: u_int res_randomid __P((void));
! 285: int res_query __P((const char *, int, int, u_char *, int));
! 286: int res_search __P((const char *, int, int, u_char *, int));
! 287: int res_querydomain __P((const char *, const char *, int, int,
! 288: u_char *, int));
! 289: int res_mkquery __P((int, const char *, int, int, const u_char *, int,
! 290: const u_char *, u_char *, int));
! 291: int res_send __P((const u_char *, int, u_char *, int));
! 292: int res_isourserver __P((const struct sockaddr_in *));
! 293: int res_nameinquery __P((const char *, int, int,
! 294: const u_char *, const u_char *));
! 295: int res_queriesmatch __P((const u_char *, const u_char *,
! 296: const u_char *, const u_char *));
! 297: void res_close __P((void));
1.1 deraadt 298: __END_DECLS
299:
300: #endif /* !_RESOLV_H_ */
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