1/*
2 * Copyright (c) 2000-2001 Proofpoint, Inc. and its suppliers.
3 *	All rights reserved.
4 *
5 * By using this file, you agree to the terms and conditions set
6 * forth in the LICENSE file which can be found at the top level of
7 * the sendmail distribution.
8 *
9 */
10
11/*
12 * Copyright (c) 1995, 1996, 1997, 1998, 1999 Kungliga Tekniska H�gskolan
13 * (Royal Institute of Technology, Stockholm, Sweden).
14 * All rights reserved.
15 *
16 * Redistribution and use in source and binary forms, with or without
17 * modification, are permitted provided that the following conditions
18 * are met:
19 *
20 * 1. Redistributions of source code must retain the above copyright
21 *    notice, this list of conditions and the following disclaimer.
22 *
23 * 2. Redistributions in binary form must reproduce the above copyright
24 *    notice, this list of conditions and the following disclaimer in the
25 *    documentation and/or other materials provided with the distribution.
26 *
27 * 3. Neither the name of the Institute nor the names of its contributors
28 *    may be used to endorse or promote products derived from this software
29 *    without specific prior written permission.
30 *
31 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
32 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
33 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
34 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
35 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
36 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
37 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
38 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
39 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
40 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
41 * SUCH DAMAGE.
42 */
43
44/* $Id: sm_resolve.h,v 8.9 2013-11-22 20:51:56 ca Exp $ */
45
46#if DNSMAP || DANE
47# ifndef __ROKEN_RESOLVE_H__
48#  define __ROKEN_RESOLVE_H__
49
50/* We use these, but they are not always present in <arpa/nameser.h> */
51
52#  ifndef T_TXT
53#   define T_TXT		16
54#  endif
55#  ifndef T_AFSDB
56#   define T_AFSDB		18
57#  endif
58#  ifndef T_SRV
59#   define T_SRV		33
60#  endif
61#  ifndef T_NAPTR
62#   define T_NAPTR		35
63#  endif
64#  ifndef T_RRSIG
65#   define T_RRSIG		46
66#  endif
67#  ifndef T_TLSA
68#   define T_TLSA		52
69#  endif
70
71typedef struct
72{
73	char		*dns_q_domain;
74	unsigned int	dns_q_type;
75	unsigned int	dns_q_class;
76} DNS_QUERY_T;
77
78typedef struct
79{
80	unsigned int	mx_r_preference;
81	char		mx_r_domain[1];
82} MX_RECORD_T;
83
84typedef struct
85{
86	unsigned int	srv_r_priority;
87	unsigned int	srv_r_weight;
88	unsigned int	srv_r_port;
89	char		srv_r_target[1];
90} SRV_RECORDT_T;
91
92
93typedef struct resource_record RESOURCE_RECORD_T;
94
95struct resource_record
96{
97	char			*rr_domain;
98	unsigned int		rr_type;
99	unsigned int		rr_class;
100	unsigned int		rr_ttl;
101	unsigned int		rr_size;
102	union
103	{
104		void		*rr_data;
105		MX_RECORD_T	*rr_mx;
106		MX_RECORD_T	*rr_afsdb; /* mx and afsdb are identical */
107		SRV_RECORDT_T	*rr_srv;
108#  if NETINET
109		struct in_addr	*rr_a;
110#  endif
111#  if NETINET6
112		struct in6_addr *rr_aaaa;
113#  endif
114		char		*rr_txt;
115	} rr_u;
116	RESOURCE_RECORD_T *rr_next;
117};
118
119#  if !defined(T_A) && !defined(T_AAAA)
120/* XXX if <arpa/nameser.h> isn't included */
121typedef int HEADER; /* will never be used */
122#  endif
123
124typedef struct
125{
126	HEADER			dns_r_h;
127	DNS_QUERY_T		dns_r_q;
128	RESOURCE_RECORD_T	*dns_r_head;
129} DNS_REPLY_T;
130
131#define SM_DNS_FL_EDNS0		0x01
132#define SM_DNS_FL_DNSSEC	0x02
133
134/* flags for parse_dns_reply() et.al. */
135#define RR_AS_TEXT	0x01	/* convert some RRs to text, e.g., TLSA */
136#define RR_RAW		0x02	/* return some RRs as "raw" data */
137			/* currently not used (set, but not read) */
138#define RR_NO_CNAME	0x04	/* do not try CNAME lookup */
139#define RR_ONLY_CNAME	0x08	/* if !RR_NO_CNAME" return only CNAME */
140
141extern void		dns_free_data __P((DNS_REPLY_T *));
142extern int		dns_string_to_type __P((const char *));
143extern const char	*dns_type_to_string __P((int));
144extern DNS_REPLY_T	*dns_lookup_map __P((const char *, int, int, time_t,
145				int, unsigned int));
146extern DNS_REPLY_T	*dns_lookup_int __P((const char *, int, int, time_t,
147				int, unsigned int, unsigned int, int *, int *));
148#  if 0
149extern DNS_REPLY_T	*dns_lookup __P((const char *domain,
150				const char *type_name,
151				time_t retrans,
152				int retry));
153#  endif /* 0 */
154
155#  if DANE
156struct hostent *dns2he __P((DNS_REPLY_T *, int));
157#  endif
158
159/* what to do if family is not supported? add SM_ASSERT()? */
160#define FAM2T_(family) (((family) == AF_INET) ? T_A : T_AAAA)
161
162#  if DNSSEC_TEST
163const char *herrno2txt __P((int));
164int setherrnofromstring __P((const char *, int *));
165int getttlfromstring __P((const char *));
166int tstdns_search __P((const char *, int, int, u_char *, int));
167int tstdns_querydomain  __P((const char *, const char *, int, int, unsigned char *, int));
168
169#   ifdef _DEFINE_SMR_GLOBALS
170#    define SMR_EXTERN
171#   else
172#    define SMR_EXTERN extern
173#   endif
174SMR_EXTERN char *NameSearchList;
175#   undef SMR_EXTERN
176extern void	dns_setns __P((struct in_addr *, unsigned int));
177extern int	nsportip __P((char *));
178#  endif /* DNSSEC_TEST*/
179
180#ifndef RES_TRUSTAD
181# define RES_TRUSTAD	0
182#endif
183#define SM_RES_DNSSEC (RES_USE_EDNS0|RES_USE_DNSSEC|RES_TRUSTAD)
184
185# endif /* ! __ROKEN_RESOLVE_H__ */
186#endif /* DNSMAP || DANE */
187