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 #ifndef SM_RESOLVE_H 47 #define SM_RESOLVE_H 48 49 #if DNSMAP || DANE 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 71 typedef struct 72 { 73 char *dns_q_domain; 74 unsigned int dns_q_type; 75 unsigned int dns_q_class; 76 } DNS_QUERY_T; 77 78 typedef struct 79 { 80 unsigned int mx_r_preference; 81 char mx_r_domain[1]; 82 } MX_RECORD_T; 83 84 typedef 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 93 typedef struct resource_record RESOURCE_RECORD_T; 94 95 struct 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 */ 121 typedef int HEADER; /* will never be used */ 122 # endif 123 124 typedef 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 */ 140 141 extern void dns_free_data __P((DNS_REPLY_T *)); 142 extern int dns_string_to_type __P((const char *)); 143 extern const char *dns_type_to_string __P((int)); 144 extern DNS_REPLY_T *dns_lookup_map __P((const char *, int, int, time_t, 145 int, unsigned int)); 146 extern DNS_REPLY_T *dns_lookup_int __P((const char *, int, int, time_t, 147 int, unsigned int, unsigned int, int *, int *)); 148 # if 0 149 extern 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 156 struct 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 163 const char *herrno2txt __P((int)); 164 int setherrnofromstring __P((const char *, int *)); 165 int getttlfromstring __P((const char *)); 166 int tstdns_search __P((const char *, int, int, u_char *, int)); 167 int tstdns_querydomain __P((const char *, const char *, int, int, unsigned char *, int)); 168 169 # endif /* DNSSEC_TEST*/ 170 171 #ifndef RES_TRUSTAD 172 # define RES_TRUSTAD 0 173 #endif 174 #define SM_RES_DNSSEC (RES_USE_EDNS0|RES_USE_DNSSEC|RES_TRUSTAD) 175 176 #endif /* DNSMAP || DANE */ 177 178 #if DNSSEC_TEST || _FFR_NAMESERVER 179 # ifdef _DEFINE_SMR_GLOBALS 180 # define SMR_EXTERN 181 # else 182 # define SMR_EXTERN extern 183 # endif 184 SMR_EXTERN char *NameSearchList; 185 # undef SMR_EXTERN 186 extern int nsportip __P((char *)); 187 #endif /* DNSSEC_TEST || _FFR_NAMESERVER */ 188 189 #endif /* ! SM_RESOLVE_H */ 190