/* * Copyright (c) 1995 - 2002 Kungliga Tekniska Högskolan * (Royal Institute of Technology, Stockholm, Sweden). * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * 3. Neither the name of the Institute nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ /* $Id: resolve.h 14773 2005-04-12 11:29:18Z lha $ */ #ifndef __RESOLVE_H__ #define __RESOLVE_H__ #ifndef ROKEN_LIB_FUNCTION #ifdef _WIN32 #define ROKEN_LIB_FUNCTION _stdcall #else #define ROKEN_LIB_FUNCTION #endif #endif typedef enum { rk_ns_t_invalid = 0, /* Cookie. */ rk_ns_t_a = 1, /* Host address. */ rk_ns_t_ns = 2, /* Authoritative server. */ rk_ns_t_md = 3, /* Mail destination. */ rk_ns_t_mf = 4, /* Mail forwarder. */ rk_ns_t_cname = 5, /* Canonical name. */ rk_ns_t_soa = 6, /* Start of authority zone. */ rk_ns_t_mb = 7, /* Mailbox domain name. */ rk_ns_t_mg = 8, /* Mail group member. */ rk_ns_t_mr = 9, /* Mail rename name. */ rk_ns_t_null = 10, /* Null resource record. */ rk_ns_t_wks = 11, /* Well known service. */ rk_ns_t_ptr = 12, /* Domain name pointer. */ rk_ns_t_hinfo = 13, /* Host information. */ rk_ns_t_minfo = 14, /* Mailbox information. */ rk_ns_t_mx = 15, /* Mail routing information. */ rk_ns_t_txt = 16, /* Text strings. */ rk_ns_t_rp = 17, /* Responsible person. */ rk_ns_t_afsdb = 18, /* AFS cell database. */ rk_ns_t_x25 = 19, /* X_25 calling address. */ rk_ns_t_isdn = 20, /* ISDN calling address. */ rk_ns_t_rt = 21, /* Router. */ rk_ns_t_nsap = 22, /* NSAP address. */ rk_ns_t_nsap_ptr = 23, /* Reverse NSAP lookup (deprecated). */ rk_ns_t_sig = 24, /* Security signature. */ rk_ns_t_key = 25, /* Security key. */ rk_ns_t_px = 26, /* X.400 mail mapping. */ rk_ns_t_gpos = 27, /* Geographical position (withdrawn). */ rk_ns_t_aaaa = 28, /* Ip6 Address. */ rk_ns_t_loc = 29, /* Location Information. */ rk_ns_t_nxt = 30, /* Next domain (security). */ rk_ns_t_eid = 31, /* Endpoint identifier. */ rk_ns_t_nimloc = 32, /* Nimrod Locator. */ rk_ns_t_srv = 33, /* Server Selection. */ rk_ns_t_atma = 34, /* ATM Address */ rk_ns_t_naptr = 35, /* Naming Authority PoinTeR */ rk_ns_t_kx = 36, /* Key Exchange */ rk_ns_t_cert = 37, /* Certification record */ rk_ns_t_a6 = 38, /* IPv6 address (deprecates AAAA) */ rk_ns_t_dname = 39, /* Non-terminal DNAME (for IPv6) */ rk_ns_t_sink = 40, /* Kitchen sink (experimentatl) */ rk_ns_t_opt = 41, /* EDNS0 option (meta-RR) */ rk_ns_t_apl = 42, /* Address prefix list (RFC 3123) */ rk_ns_t_ds = 43, /* Delegation Signer (RFC 3658) */ rk_ns_t_sshfp = 44, /* SSH fingerprint */ rk_ns_t_tkey = 249, /* Transaction key */ rk_ns_t_tsig = 250, /* Transaction signature. */ rk_ns_t_ixfr = 251, /* Incremental zone transfer. */ rk_ns_t_axfr = 252, /* Transfer zone of authority. */ rk_ns_t_mailb = 253, /* Transfer mailbox records. */ rk_ns_t_maila = 254, /* Transfer mail agent records. */ rk_ns_t_any = 255, /* Wildcard match. */ rk_ns_t_zxfr = 256, /* BIND-specific, nonstandard. */ rk_ns_t_max = 65536 } rk_ns_type; /* We use these, but they are not always present in */ #ifndef C_IN #define C_IN 1 #endif #ifndef T_A #define T_A 1 #endif #ifndef T_NS #define T_NS 2 #endif #ifndef T_CNAME #define T_CNAME 5 #endif #ifndef T_SOA #define T_SOA 5 #endif #ifndef T_PTR #define T_PTR 12 #endif #ifndef T_MX #define T_MX 15 #endif #ifndef T_TXT #define T_TXT 16 #endif #ifndef T_AFSDB #define T_AFSDB 18 #endif #ifndef T_SIG #define T_SIG 24 #endif #ifndef T_KEY #define T_KEY 25 #endif #ifndef T_AAAA #define T_AAAA 28 #endif #ifndef T_SRV #define T_SRV 33 #endif #ifndef T_NAPTR #define T_NAPTR 35 #endif #ifndef T_CERT #define T_CERT 37 #endif #ifndef T_SSHFP #define T_SSHFP 44 #endif #ifndef MAXDNAME #define MAXDNAME 1025 #endif #define dns_query rk_dns_query #define mx_record rk_mx_record #define srv_record rk_srv_record #define key_record rk_key_record #define sig_record rk_sig_record #define cert_record rk_cert_record #define sshfp_record rk_sshfp_record #define resource_record rk_resource_record #define dns_reply rk_dns_reply #define dns_lookup rk_dns_lookup #define dns_free_data rk_dns_free_data #define dns_string_to_type rk_dns_string_to_type #define dns_type_to_string rk_dns_type_to_string #define dns_srv_order rk_dns_srv_order struct dns_query{ char *domain; unsigned type; unsigned class; }; struct mx_record{ unsigned preference; char domain[1]; }; struct srv_record{ unsigned priority; unsigned weight; unsigned port; char target[1]; }; struct key_record { unsigned flags; unsigned protocol; unsigned algorithm; size_t key_len; u_char key_data[1]; }; struct sig_record { unsigned type; unsigned algorithm; unsigned labels; unsigned orig_ttl; unsigned sig_expiration; unsigned sig_inception; unsigned key_tag; char *signer; unsigned sig_len; char sig_data[1]; /* also includes signer */ }; struct cert_record { unsigned type; unsigned tag; unsigned algorithm; size_t cert_len; u_char cert_data[1]; }; struct sshfp_record { unsigned algorithm; unsigned type; size_t sshfp_len; u_char sshfp_data[1]; }; struct ds_record { unsigned key_tag; unsigned algorithm; unsigned digest_type; unsigned digest_len; u_char digest_data[1]; }; struct resource_record{ char *domain; unsigned type; unsigned class; unsigned ttl; unsigned size; union { void *data; struct mx_record *mx; struct mx_record *afsdb; /* mx and afsdb are identical */ struct srv_record *srv; struct in_addr *a; char *txt; struct key_record *key; struct cert_record *cert; struct sig_record *sig; struct sshfp_record *sshfp; struct ds_record *ds; }u; struct resource_record *next; }; #define rk_DNS_MAX_PACKET_SIZE 0xffff struct dns_header { unsigned id; unsigned flags; #define rk_DNS_HEADER_RESPONSE_FLAG 1 #define rk_DNS_HEADER_AUTHORITIVE_ANSWER 2 #define rk_DNS_HEADER_TRUNCATED_MESSAGE 4 #define rk_DNS_HEADER_RECURSION_DESIRED 8 #define rk_DNS_HEADER_RECURSION_AVAILABLE 16 #define rk_DNS_HEADER_AUTHENTIC_DATA 32 #define rk_DNS_HEADER_CHECKING_DISABLED 64 unsigned opcode; unsigned response_code; unsigned qdcount; unsigned ancount; unsigned nscount; unsigned arcount; }; struct dns_reply{ struct dns_header h; struct dns_query q; struct resource_record *head; }; struct dns_reply* ROKEN_LIB_FUNCTION dns_lookup(const char *, const char *); void ROKEN_LIB_FUNCTION dns_free_data(struct dns_reply *); int ROKEN_LIB_FUNCTION dns_string_to_type(const char *name); const char *ROKEN_LIB_FUNCTION dns_type_to_string(int type); void ROKEN_LIB_FUNCTION dns_srv_order(struct dns_reply*); #endif /* __RESOLVE_H__ */