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
|
// -*-c++-*-
/* $Id$ */
/*
*
* Copyright (C) 1998-2003 David Mazieres (dm@uun.org)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2, or (at
* your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*
*/
#ifndef _DNS_H_
#define _DNS_H_ 1
#include "async.h"
extern "C" {
#define class rr_class
#if HAVE_ARPA_NAMESER_COMPAT_H
#include <arpa/nameser_compat.h>
#include <arpa/nameser.h>
#else /* !HAVE_ARPA_NAMESER_COMPAT_H */
#include <arpa/nameser.h>
#endif /* !HAVE_ARPA_NAMESER_COMPAT_H */
#undef class
#include <resolv.h>
/* Declarations missing on some OS's */
#ifdef NEED_RES_INIT_DECL
void res_init ();
#endif /* NEED_RES_INIT_DECL */
#ifdef NEED_RES_MKQUERY_DECL
int res_mkquery (int, const char *, int, int,
const u_char *, int, const u_char *,
u_char *, int);
#endif /* NEED_RES_MKQUERY_DECL */
}
struct addrhint {
char *h_name;
int h_addrtype;
int h_length;
char h_address[16];
};
// struct hostent;
struct mxrec {
u_int16_t pref;
char *name;
};
struct mxlist {
char *m_name; /* Name of host for which MX list taken */
struct addrhint **m_hints;
u_short m_nmx; /* Number of mx records */
struct mxrec m_mxes[1]; /* MX records */
};
struct srvrec {
u_int16_t prio;
u_int16_t weight;
u_int16_t port;
char *name;
};
struct srvlist {
char *s_name;
struct addrhint **s_hints;
u_short s_nsrv;
struct srvrec s_srvs[1];
};
struct txtlist {
char *t_name;
u_short t_ntxt;
char *t_txts[1];
};
/* Extender error types for ar_errno */
#define ARERR_NXREC 0x101 /* No records of appropriate type */
#define ARERR_TIMEOUT 0x102 /* Query timed out */
#define ARERR_PTRSPOOF 0x103 /* PTR response was a lie! */
#define ARERR_BADRESP 0x104 /* Nameserver replied with malformed packet */
#define ARERR_CANTSEND 0x105 /* Can't send to name server */
#define ARERR_REQINVAL 0x106 /* Request was for malformed domain name */
#define ARERR_CNAMELOOP 0x107 /* CNAME records form loop */
typedef struct dnsreq dnsreq_t;
void dnsreq_cancel (dnsreq_t *rqp);
typedef callback<void, ptr<hostent>, int>::ref cbhent;
dnsreq_t *dns_hostbyname (str, cbhent,
bool search = false, bool addrok = true);
dnsreq_t *dns_hostbyaddr (const in_addr, cbhent);
typedef callback<void, ptr<mxlist>, int>::ref cbmxlist;
dnsreq_t *dns_mxbyname (str, cbmxlist, bool search = false);
typedef callback<void, ptr<srvlist>, int>::ref cbsrvlist;
dnsreq_t *dns_srvbyname (str name, cbsrvlist, bool search = false);
typedef callback<void, ptr<txtlist>, int>::ref cbtxtlist;
dnsreq_t *dns_txtbyname (str name, cbtxtlist cb, bool search = false);
inline dnsreq_t *
dns_srvbyname (const char *name, const char *proto, const char *srv,
cbsrvlist cb, bool search = false)
{
return dns_srvbyname (strbuf ("_%s._%s.%s", srv, proto, name), cb, search);
}
const char *dns_strerror (int);
int dns_tmperr (int);
void printaddrs (const char *, ptr<hostent>, int = 0);
void printmxlist (const char *, ptr<mxlist>, int = 0);
void printsrvlist (const char *msg, ptr<srvlist> s, int = 0);
void printtxtlist (const char *msg, ptr<txtlist> s, int = 0);
void dns_reload ();
#endif /* !_DNS_H_ */
|
