1/* 2 * Copyright (c) 1995 - 2002 Kungliga Tekniska H��gskolan 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 1.1.1.1 2011/06/10 09:34:42 andrew Exp $ */ 35 36#ifndef __RESOLVE_H__ 37#define __RESOLVE_H__ 38 39#ifndef ROKEN_LIB_FUNCTION 40#ifdef _WIN32 41#define ROKEN_LIB_FUNCTION _stdcall 42#else 43#define ROKEN_LIB_FUNCTION 44#endif 45#endif 46 47enum { 48 rk_ns_c_in = 1 49}; 50 51enum { 52 rk_ns_t_invalid = 0, /* Cookie. */ 53 rk_ns_t_a = 1, /* Host address. */ 54 rk_ns_t_ns = 2, /* Authoritative server. */ 55 rk_ns_t_md = 3, /* Mail destination. */ 56 rk_ns_t_mf = 4, /* Mail forwarder. */ 57 rk_ns_t_cname = 5, /* Canonical name. */ 58 rk_ns_t_soa = 6, /* Start of authority zone. */ 59 rk_ns_t_mb = 7, /* Mailbox domain name. */ 60 rk_ns_t_mg = 8, /* Mail group member. */ 61 rk_ns_t_mr = 9, /* Mail rename name. */ 62 rk_ns_t_null = 10, /* Null resource record. */ 63 rk_ns_t_wks = 11, /* Well known service. */ 64 rk_ns_t_ptr = 12, /* Domain name pointer. */ 65 rk_ns_t_hinfo = 13, /* Host information. */ 66 rk_ns_t_minfo = 14, /* Mailbox information. */ 67 rk_ns_t_mx = 15, /* Mail routing information. */ 68 rk_ns_t_txt = 16, /* Text strings. */ 69 rk_ns_t_rp = 17, /* Responsible person. */ 70 rk_ns_t_afsdb = 18, /* AFS cell database. */ 71 rk_ns_t_x25 = 19, /* X_25 calling address. */ 72 rk_ns_t_isdn = 20, /* ISDN calling address. */ 73 rk_ns_t_rt = 21, /* Router. */ 74 rk_ns_t_nsap = 22, /* NSAP address. */ 75 rk_ns_t_nsap_ptr = 23, /* Reverse NSAP lookup (deprecated). */ 76 rk_ns_t_sig = 24, /* Security signature. */ 77 rk_ns_t_key = 25, /* Security key. */ 78 rk_ns_t_px = 26, /* X.400 mail mapping. */ 79 rk_ns_t_gpos = 27, /* Geographical position (withdrawn). */ 80 rk_ns_t_aaaa = 28, /* Ip6 Address. */ 81 rk_ns_t_loc = 29, /* Location Information. */ 82 rk_ns_t_nxt = 30, /* Next domain (security). */ 83 rk_ns_t_eid = 31, /* Endpoint identifier. */ 84 rk_ns_t_nimloc = 32, /* Nimrod Locator. */ 85 rk_ns_t_srv = 33, /* Server Selection. */ 86 rk_ns_t_atma = 34, /* ATM Address */ 87 rk_ns_t_naptr = 35, /* Naming Authority PoinTeR */ 88 rk_ns_t_kx = 36, /* Key Exchange */ 89 rk_ns_t_cert = 37, /* Certification record */ 90 rk_ns_t_a6 = 38, /* IPv6 address (deprecates AAAA) */ 91 rk_ns_t_dname = 39, /* Non-terminal DNAME (for IPv6) */ 92 rk_ns_t_sink = 40, /* Kitchen sink (experimentatl) */ 93 rk_ns_t_opt = 41, /* EDNS0 option (meta-RR) */ 94 rk_ns_t_apl = 42, /* Address prefix list (RFC 3123) */ 95 rk_ns_t_ds = 43, /* Delegation Signer (RFC 3658) */ 96 rk_ns_t_sshfp = 44, /* SSH fingerprint */ 97 rk_ns_t_tkey = 249, /* Transaction key */ 98 rk_ns_t_tsig = 250, /* Transaction signature. */ 99 rk_ns_t_ixfr = 251, /* Incremental zone transfer. */ 100 rk_ns_t_axfr = 252, /* Transfer zone of authority. */ 101 rk_ns_t_mailb = 253, /* Transfer mailbox records. */ 102 rk_ns_t_maila = 254, /* Transfer mail agent records. */ 103 rk_ns_t_any = 255, /* Wildcard match. */ 104 rk_ns_t_zxfr = 256, /* BIND-specific, nonstandard. */ 105 rk_ns_t_max = 65536 106}; 107 108#ifndef MAXDNAME 109#define MAXDNAME 1025 110#endif 111 112#define mx_record rk_mx_record 113#define srv_record rk_srv_record 114#define key_record rk_key_record 115#define sig_record rk_sig_record 116#define cert_record rk_cert_record 117#define sshfp_record rk_sshfp_record 118 119struct rk_dns_query{ 120 char *domain; 121 unsigned type; 122 unsigned class; 123}; 124 125struct rk_mx_record{ 126 unsigned preference; 127 char domain[1]; 128}; 129 130struct rk_srv_record{ 131 unsigned priority; 132 unsigned weight; 133 unsigned port; 134 char target[1]; 135}; 136 137struct rk_key_record { 138 unsigned flags; 139 unsigned protocol; 140 unsigned algorithm; 141 size_t key_len; 142 u_char key_data[1]; 143}; 144 145struct rk_sig_record { 146 unsigned type; 147 unsigned algorithm; 148 unsigned labels; 149 unsigned orig_ttl; 150 unsigned sig_expiration; 151 unsigned sig_inception; 152 unsigned key_tag; 153 char *signer; 154 unsigned sig_len; 155 char sig_data[1]; /* also includes signer */ 156}; 157 158struct rk_cert_record { 159 unsigned type; 160 unsigned tag; 161 unsigned algorithm; 162 size_t cert_len; 163 u_char cert_data[1]; 164}; 165 166struct rk_sshfp_record { 167 unsigned algorithm; 168 unsigned type; 169 size_t sshfp_len; 170 u_char sshfp_data[1]; 171}; 172 173struct rk_ds_record { 174 unsigned key_tag; 175 unsigned algorithm; 176 unsigned digest_type; 177 unsigned digest_len; 178 u_char digest_data[1]; 179}; 180 181struct rk_resource_record{ 182 char *domain; 183 unsigned type; 184 unsigned class; 185 unsigned ttl; 186 unsigned size; 187 union { 188 void *data; 189 struct rk_mx_record *mx; 190 struct rk_mx_record *afsdb; /* mx and afsdb are identical */ 191 struct rk_srv_record *srv; 192 struct in_addr *a; 193 char *txt; 194 struct rk_key_record *key; 195 struct rk_cert_record *cert; 196 struct rk_sig_record *sig; 197 struct rk_sshfp_record *sshfp; 198 struct rk_ds_record *ds; 199 }u; 200 struct rk_resource_record *next; 201}; 202 203#define rk_DNS_MAX_PACKET_SIZE 0xffff 204 205struct rk_dns_header { 206 unsigned id; 207 unsigned flags; 208#define rk_DNS_HEADER_RESPONSE_FLAG 1 209#define rk_DNS_HEADER_AUTHORITIVE_ANSWER 2 210#define rk_DNS_HEADER_TRUNCATED_MESSAGE 4 211#define rk_DNS_HEADER_RECURSION_DESIRED 8 212#define rk_DNS_HEADER_RECURSION_AVAILABLE 16 213#define rk_DNS_HEADER_AUTHENTIC_DATA 32 214#define rk_DNS_HEADER_CHECKING_DISABLED 64 215 unsigned opcode; 216 unsigned response_code; 217 unsigned qdcount; 218 unsigned ancount; 219 unsigned nscount; 220 unsigned arcount; 221}; 222 223struct rk_dns_reply{ 224 struct rk_dns_header h; 225 struct rk_dns_query q; 226 struct rk_resource_record *head; 227}; 228 229 230#ifdef __cplusplus 231extern "C" { 232#endif 233 234struct rk_dns_reply* ROKEN_LIB_FUNCTION 235 rk_dns_lookup(const char *, const char *); 236void ROKEN_LIB_FUNCTION 237 rk_dns_free_data(struct rk_dns_reply *); 238int ROKEN_LIB_FUNCTION 239 rk_dns_string_to_type(const char *name); 240const char *ROKEN_LIB_FUNCTION 241 rk_dns_type_to_string(int type); 242void ROKEN_LIB_FUNCTION 243 rk_dns_srv_order(struct rk_dns_reply*); 244 245#ifdef __cplusplus 246} 247#endif 248 249#endif /* __RESOLVE_H__ */ 250