1 /* $NetBSD: resolve.h,v 1.2 2017/01/28 21:31:50 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1995 - 2002 Kungliga Tekniska Hgskolan 5 * (Royal Institute of Technology, Stockholm, Sweden). 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * 3. Neither the name of the Institute nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 /* Id */ 37 38 #ifndef __RESOLVE_H__ 39 #define __RESOLVE_H__ 40 41 #ifndef ROKEN_LIB_FUNCTION 42 #ifdef _WIN32 43 #define ROKEN_LIB_FUNCTION 44 #define ROKEN_LIB_CALL __cdecl 45 #else 46 #define ROKEN_LIB_FUNCTION 47 #define ROKEN_LIB_CALL 48 #endif 49 #endif 50 51 enum { 52 rk_ns_c_in = 1 53 }; 54 55 enum { 56 rk_ns_t_invalid = 0, /* Cookie. */ 57 rk_ns_t_a = 1, /* Host address. */ 58 rk_ns_t_ns = 2, /* Authoritative server. */ 59 rk_ns_t_md = 3, /* Mail destination. */ 60 rk_ns_t_mf = 4, /* Mail forwarder. */ 61 rk_ns_t_cname = 5, /* Canonical name. */ 62 rk_ns_t_soa = 6, /* Start of authority zone. */ 63 rk_ns_t_mb = 7, /* Mailbox domain name. */ 64 rk_ns_t_mg = 8, /* Mail group member. */ 65 rk_ns_t_mr = 9, /* Mail rename name. */ 66 rk_ns_t_null = 10, /* Null resource record. */ 67 rk_ns_t_wks = 11, /* Well known service. */ 68 rk_ns_t_ptr = 12, /* Domain name pointer. */ 69 rk_ns_t_hinfo = 13, /* Host information. */ 70 rk_ns_t_minfo = 14, /* Mailbox information. */ 71 rk_ns_t_mx = 15, /* Mail routing information. */ 72 rk_ns_t_txt = 16, /* Text strings. */ 73 rk_ns_t_rp = 17, /* Responsible person. */ 74 rk_ns_t_afsdb = 18, /* AFS cell database. */ 75 rk_ns_t_x25 = 19, /* X_25 calling address. */ 76 rk_ns_t_isdn = 20, /* ISDN calling address. */ 77 rk_ns_t_rt = 21, /* Router. */ 78 rk_ns_t_nsap = 22, /* NSAP address. */ 79 rk_ns_t_nsap_ptr = 23, /* Reverse NSAP lookup (deprecated). */ 80 rk_ns_t_sig = 24, /* Security signature. */ 81 rk_ns_t_key = 25, /* Security key. */ 82 rk_ns_t_px = 26, /* X.400 mail mapping. */ 83 rk_ns_t_gpos = 27, /* Geographical position (withdrawn). */ 84 rk_ns_t_aaaa = 28, /* Ip6 Address. */ 85 rk_ns_t_loc = 29, /* Location Information. */ 86 rk_ns_t_nxt = 30, /* Next domain (security). */ 87 rk_ns_t_eid = 31, /* Endpoint identifier. */ 88 rk_ns_t_nimloc = 32, /* Nimrod Locator. */ 89 rk_ns_t_srv = 33, /* Server Selection. */ 90 rk_ns_t_atma = 34, /* ATM Address */ 91 rk_ns_t_naptr = 35, /* Naming Authority PoinTeR */ 92 rk_ns_t_kx = 36, /* Key Exchange */ 93 rk_ns_t_cert = 37, /* Certification record */ 94 rk_ns_t_a6 = 38, /* IPv6 address (deprecates AAAA) */ 95 rk_ns_t_dname = 39, /* Non-terminal DNAME (for IPv6) */ 96 rk_ns_t_sink = 40, /* Kitchen sink (experimentatl) */ 97 rk_ns_t_opt = 41, /* EDNS0 option (meta-RR) */ 98 rk_ns_t_apl = 42, /* Address prefix list (RFC 3123) */ 99 rk_ns_t_ds = 43, /* Delegation Signer (RFC 3658) */ 100 rk_ns_t_sshfp = 44, /* SSH fingerprint */ 101 rk_ns_t_tkey = 249, /* Transaction key */ 102 rk_ns_t_tsig = 250, /* Transaction signature. */ 103 rk_ns_t_ixfr = 251, /* Incremental zone transfer. */ 104 rk_ns_t_axfr = 252, /* Transfer zone of authority. */ 105 rk_ns_t_mailb = 253, /* Transfer mailbox records. */ 106 rk_ns_t_maila = 254, /* Transfer mail agent records. */ 107 rk_ns_t_any = 255, /* Wildcard match. */ 108 rk_ns_t_zxfr = 256, /* BIND-specific, nonstandard. */ 109 rk_ns_t_max = 65536 110 }; 111 112 #ifndef MAXDNAME 113 #define MAXDNAME 1025 114 #endif 115 116 #define mx_record rk_mx_record 117 #define srv_record rk_srv_record 118 #define key_record rk_key_record 119 #define sig_record rk_sig_record 120 #define cert_record rk_cert_record 121 #define sshfp_record rk_sshfp_record 122 123 struct rk_dns_query{ 124 char *domain; 125 unsigned type; 126 unsigned class; 127 }; 128 129 struct rk_mx_record{ 130 unsigned preference; 131 char domain[1]; 132 }; 133 134 struct rk_srv_record{ 135 unsigned priority; 136 unsigned weight; 137 unsigned port; 138 char target[1]; 139 }; 140 141 struct rk_key_record { 142 unsigned flags; 143 unsigned protocol; 144 unsigned algorithm; 145 size_t key_len; 146 u_char key_data[1]; 147 }; 148 149 struct rk_sig_record { 150 unsigned type; 151 unsigned algorithm; 152 unsigned labels; 153 unsigned orig_ttl; 154 unsigned sig_expiration; 155 unsigned sig_inception; 156 unsigned key_tag; 157 char *signer; 158 size_t sig_len; 159 char sig_data[1]; /* also includes signer */ 160 }; 161 162 struct rk_cert_record { 163 unsigned type; 164 unsigned tag; 165 unsigned algorithm; 166 size_t cert_len; 167 u_char cert_data[1]; 168 }; 169 170 struct rk_sshfp_record { 171 unsigned algorithm; 172 unsigned type; 173 size_t sshfp_len; 174 u_char sshfp_data[1]; 175 }; 176 177 struct rk_ds_record { 178 unsigned key_tag; 179 unsigned algorithm; 180 unsigned digest_type; 181 size_t digest_len; 182 u_char digest_data[1]; 183 }; 184 185 struct rk_resource_record{ 186 char *domain; 187 unsigned type; 188 unsigned class; 189 unsigned ttl; 190 unsigned size; 191 union { 192 void *data; 193 struct rk_mx_record *mx; 194 struct rk_mx_record *afsdb; /* mx and afsdb are identical */ 195 struct rk_srv_record *srv; 196 struct in_addr *a; 197 char *txt; 198 struct rk_key_record *key; 199 struct rk_cert_record *cert; 200 struct rk_sig_record *sig; 201 struct rk_sshfp_record *sshfp; 202 struct rk_ds_record *ds; 203 }u; 204 struct rk_resource_record *next; 205 }; 206 207 #define rk_DNS_MAX_PACKET_SIZE 0xffff 208 209 struct rk_dns_header { 210 unsigned id; 211 unsigned flags; 212 #define rk_DNS_HEADER_RESPONSE_FLAG 1 213 #define rk_DNS_HEADER_AUTHORITIVE_ANSWER 2 214 #define rk_DNS_HEADER_TRUNCATED_MESSAGE 4 215 #define rk_DNS_HEADER_RECURSION_DESIRED 8 216 #define rk_DNS_HEADER_RECURSION_AVAILABLE 16 217 #define rk_DNS_HEADER_AUTHENTIC_DATA 32 218 #define rk_DNS_HEADER_CHECKING_DISABLED 64 219 unsigned opcode; 220 unsigned response_code; 221 unsigned qdcount; 222 unsigned ancount; 223 unsigned nscount; 224 unsigned arcount; 225 }; 226 227 struct rk_dns_reply{ 228 struct rk_dns_header h; 229 struct rk_dns_query q; 230 struct rk_resource_record *head; 231 }; 232 233 234 #ifdef __cplusplus 235 extern "C" { 236 #endif 237 238 ROKEN_LIB_FUNCTION struct rk_dns_reply* ROKEN_LIB_CALL 239 rk_dns_lookup(const char *, const char *); 240 ROKEN_LIB_FUNCTION void ROKEN_LIB_CALL 241 rk_dns_free_data(struct rk_dns_reply *); 242 ROKEN_LIB_FUNCTION int ROKEN_LIB_CALL 243 rk_dns_string_to_type(const char *name); 244 ROKEN_LIB_FUNCTION const char * ROKEN_LIB_CALL 245 rk_dns_type_to_string(int type); 246 ROKEN_LIB_FUNCTION void ROKEN_LIB_CALL 247 rk_dns_srv_order(struct rk_dns_reply*); 248 249 #ifdef __cplusplus 250 } 251 #endif 252 253 #endif /* __RESOLVE_H__ */ 254
Indexes created Wed Jul 22 00:25:13 UTC 2026