crypto/heimdal-0.6.3/lib/roken/resolve.h

   1 /*
   2  * Copyright (c) 1995 - 2002 Kungliga Tekniska Högskolan
   3  * (Royal Institute of Technology, Stockholm, Sweden).
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  *
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * 3. Neither the name of the Institute nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 /* $Id: resolve.h,v 1.15 2002/08/26 13:30:16 assar Exp $ */
  35
  36 #ifndef __RESOLVE_H__
  37 #define __RESOLVE_H__
  38
  39 /* We use these, but they are not always present in <arpa/nameser.h> */
  40
  41 #ifndef T_TXT
  42 #define T_TXT           16
  43 #endif
  44 #ifndef T_AFSDB
  45 #define T_AFSDB         18
  46 #endif
  47 #ifndef T_SIG
  48 #define T_SIG           24
  49 #endif
  50 #ifndef T_KEY
  51 #define T_KEY           25
  52 #endif
  53 #ifndef T_AAAA
  54 #define T_AAAA          28
  55 #endif
  56 #ifndef T_SRV
  57 #define T_SRV           33
  58 #endif
  59 #ifndef T_NAPTR
  60 #define T_NAPTR         35
  61 #endif
  62 #ifndef T_CERT
  63 #define T_CERT          37
  64 #endif
  65
  66 #define dns_query               rk_dns_query
  67 #define mx_record               rk_mx_record
  68 #define srv_record              rk_srv_record
  69 #define key_record              rk_key_record
  70 #define sig_record              rk_sig_record
  71 #define cert_record             rk_cert_record
  72 #define resource_record         rk_resource_record
  73 #define dns_reply               rk_dns_reply
  74
  75 #define dns_lookup              rk_dns_lookup
  76 #define dns_free_data           rk_dns_free_data
  77 #define dns_string_to_type      rk_dns_string_to_type
  78 #define dns_type_to_string      rk_dns_type_to_string
  79 #define dns_srv_order           rk_dns_srv_order
  80
  81 struct dns_query{
  82     char *domain;
  83     unsigned type;
  84     unsigned class;
  85 };
  86
  87 struct mx_record{
  88     unsigned  preference;
  89     char domain[1];
  90 };
  91
  92 struct srv_record{
  93     unsigned priority;
  94     unsigned weight;
  95     unsigned port;
  96     char target[1];
  97 };
  98
  99 struct key_record {
 100     unsigned flags;
 101     unsigned protocol;
 102     unsigned algorithm;
 103     size_t   key_len;
 104     u_char   key_data[1];
 105 };
 106
 107 struct sig_record {
 108     unsigned type;
 109     unsigned algorithm;
 110     unsigned labels;
 111     unsigned orig_ttl;
 112     unsigned sig_expiration;
 113     unsigned sig_inception;
 114     unsigned key_tag;
 115     char     *signer;
 116     unsigned sig_len;
 117     char     sig_data[1];       /* also includes signer */
 118 };
 119
 120 struct cert_record {
 121     unsigned type;
 122     unsigned tag;
 123     unsigned algorithm;
 124     size_t   cert_len;
 125     u_char   cert_data[1];
 126 };
 127
 128 struct resource_record{
 129     char *domain;
 130     unsigned type;
 131     unsigned class;
 132     unsigned ttl;
 133     unsigned size;
 134     union {
 135         void *data;
 136         struct mx_record *mx;
 137         struct mx_record *afsdb; /* mx and afsdb are identical */
 138         struct srv_record *srv;
 139         struct in_addr *a;
 140         char *txt;
 141         struct key_record *key;
 142         struct cert_record *cert;
 143         struct sig_record *sig;
 144     }u;
 145     struct resource_record *next;
 146 };
 147
 148 #ifndef T_A /* XXX if <arpa/nameser.h> isn't included */
 149 typedef int HEADER; /* will never be used */
 150 #endif
 151
 152 struct dns_reply{
 153     HEADER h;
 154     struct dns_query q;
 155     struct resource_record *head;
 156 };
 157
 158
 159 struct dns_reply* dns_lookup(const char *, const char *);
 160 void dns_free_data(struct dns_reply *);
 161 int dns_string_to_type(const char *name);
 162 const char *dns_type_to_string(int type);
 163 void dns_srv_order(struct dns_reply*);
 164
 165 #endif /* __RESOLVE_H__ */