1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
|
/*
* Copyright (c) 1983, 1987, 1989 The Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* from: @(#)resolv.h 5.15 (Berkeley) 4/3/91
* $Id$
*/
#ifndef _RESOLV_H_
#define _RESOLV_H_
#include <netinet/in.h>
/*
* This is specificly for Solaris which defines NOERROR in the streams
* header files and defines it differently than in arpa/nameser.h
*/
#ifdef NOERROR
#undef NOERROR
#endif
#include <arpa/nameser.h>
/*
* revision information. this is the release date in YYYYMMDD format.
* it can change every day so the right thing to do with it is use it
* in preprocessor commands such as "#if (__RES > 19931104)". do not
* compare for equality; rather, use it to determine whether your resolver
* is new enough to contain a certain feature.
*/
#define __RES 19940703
/*
* Resolver configuration file.
* Normally not present, but may contain the address of the
* inital name server(s) to query and the domain search list.
*/
#ifndef _PATH_RESCONF
#define _PATH_RESCONF "/etc/resolv.conf"
#endif
/*
* Global defines and variables for resolver stub.
*/
#define MAXNS 3 /* max # name servers we'll track */
#define MAXDFLSRCH 3 /* # default domain levels to try */
#define MAXDNSRCH 6 /* max # domains in search path */
#define LOCALDOMAINPARTS 2 /* min levels in name that is "local" */
#define MAXDNSLUS 4 /* max # of host lookup types */
#define RES_TIMEOUT 5 /* min. seconds between retries */
#define MAXRESOLVSORT 10 /* number of net to sort on */
#define RES_MAXNDOTS 15 /* should reflect bit field size */
struct __res_state {
int retrans; /* retransmition time interval */
int retry; /* number of times to retransmit */
long options; /* option flags - see below. */
int nscount; /* number of name servers */
struct sockaddr_in nsaddr_list[MAXNS]; /* address of name server */
#define nsaddr nsaddr_list[0] /* for backward compatibility */
u_short id; /* current packet id */
char *dnsrch[MAXDNSRCH+1]; /* components of domain to search */
char defdname[MAXDNAME]; /* default domain */
long pfcode; /* RES_PRF_ flags - see below. */
u_char ndots:4; /* threshold for initial abs. query */
u_char nsort:4; /* number of elements in sort_list[] */
char unused[3];
struct {
struct in_addr addr;
u_long mask;
} sort_list[MAXRESOLVSORT];
char lookups[MAXDNSLUS];
};
/*
* Resolver options
*/
#define RES_INIT 0x0001 /* address initialized */
#define RES_DEBUG 0x0002 /* print debug messages */
#define RES_AAONLY 0x0004 /* authoritative answers only */
#define RES_USEVC 0x0008 /* use virtual circuit */
#define RES_PRIMARY 0x0010 /* query primary server only */
#define RES_IGNTC 0x0020 /* ignore trucation errors */
#define RES_RECURSE 0x0040 /* recursion desired */
#define RES_DEFNAMES 0x0080 /* use default domain name */
#define RES_STAYOPEN 0x0100 /* Keep TCP socket open */
#define RES_DNSRCH 0x0200 /* search up local domain tree */
#define RES_DEFAULT (RES_RECURSE | RES_DEFNAMES | RES_DNSRCH)
/*
* Resolver "pfcode" values. Used by dig.
*/
#define RES_PRF_STATS 0x0001
/* 0x0002 */
#define RES_PRF_CLASS 0x0004
#define RES_PRF_CMD 0x0008
#define RES_PRF_QUES 0x0010
#define RES_PRF_ANS 0x0020
#define RES_PRF_AUTH 0x0040
#define RES_PRF_ADD 0x0080
#define RES_PRF_HEAD1 0x0100
#define RES_PRF_HEAD2 0x0200
#define RES_PRF_TTLID 0x0400
#define RES_PRF_HEADX 0x0800
#define RES_PRF_QUERY 0x1000
#define RES_PRF_REPLY 0x2000
#define RES_PRF_INIT 0x4000
/* 0x8000 */
#define _res (*_res_status())
#define h_errno (_res_get_error())
#include <sys/cdefs.h>
#include <stdio.h>
/* Private routines shared between libc/net, named, nslookup and others. */
#define dn_skipname __dn_skipname
#define fp_query __fp_query
#define hostalias __hostalias
#define putlong __putlong
#define putshort __putshort
#define p_class __p_class
#define p_time __p_time
#define p_type __p_type
__BEGIN_DECLS
struct __res_state *_res_status __P_((void));
int _res_get_error __P_((void));
int __dn_skipname __P_((const u_char *, const u_char *));
void __fp_query __P_((char *, FILE *));
char *__hostalias __P_((const char *));
void __putlong __P_((pthread_ipaddr_type, unsigned char *));
void __putshort __P_((pthread_ipport_type, unsigned char *));
char *__p_class __P_((int));
char *__p_time __P_((unsigned long));
char *__p_type __P_((int));
int dn_comp __P_((const unsigned char *, unsigned char *, int,
unsigned char **, unsigned char **));
int dn_expand __P_((const unsigned char *, const unsigned char *,
const unsigned char *, unsigned char *, int));
int res_init __P_((void));
int res_mkquery __P_((int, const char *, int, int, const char *, int,
const char *, char *, int));
int res_send __P_((const char *, int, char *, int));
__END_DECLS
#endif /* !_RESOLV_H_ */
|
