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Diffstat (limited to 'include/resolv.h')
| -rw-r--r-- | include/resolv.h | 312 |
1 files changed, 312 insertions, 0 deletions
diff --git a/include/resolv.h b/include/resolv.h new file mode 100644 index 0000000000..6c87a005e3 --- /dev/null +++ b/include/resolv.h @@ -0,0 +1,312 @@ +/* + * Copyright (c) 1983, 1987, 1989 + * The Regents of the University of California. 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 University 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 REGENTS 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 REGENTS 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. + */ + +/* + * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC") + * Portions Copyright (c) 1996-1999 by Internet Software Consortium. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT + * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +/*% + * @(#)resolv.h 8.1 (Berkeley) 6/2/93 + * $FreeBSD: release/9.0.0/include/resolv.h 203964 2010-02-16 19:39:50Z imp $ + */ + +#ifndef _RESOLV_H_ +#define _RESOLV_H_ + +#include <sys/param.h> +#include <sys/types.h> +#include <sys/cdefs.h> +#include <stdio.h> +#include <netinet/in.h> /* struct in_addr */ + +/*% + * Revision information. This is the release date in YYYYMMDD format. + * It can change every day so the right thing to do with it is use it + * in preprocessor commands such as "#if (__RES > 19931104)". Do not + * compare for equality; rather, use it to determine whether your resolver + * is new enough to contain a certain feature. + */ + +#define __RES 19960801 + +/*% + * This used to be defined in res_query.c, now it's in herror.c. It was + * never extern'd by any *.h file before it was placed here. herror.c is + * part of libresolv.a even though it might make more sense in libnetdb.a + * or even libnet.a. + */ + +extern int h_errno; + +/*% + * Resolver configuration file. + * Normally not present, but may contain the address of the + * initial name server(s) to query and the domain search list. + */ + +#ifndef _PATH_RESCONF +#define _PATH_RESCONF "/etc/resolv.conf" +#endif + +typedef enum { res_goahead, res_nextns, res_modified, res_done, res_error } + res_sendhookact; + +typedef res_sendhookact (*res_send_qhook)(struct sockaddr_in * const *ns, + const u_char **query, + int *querylen, + u_char *ans, + int anssiz, + int *resplen); + +typedef res_sendhookact (*res_send_rhook)(const struct sockaddr_in *ns, + const u_char *query, + int querylen, + u_char *ans, + int anssiz, + int *resplen); + +struct res_sym { + int number; /*%< Identifying number, like T_MX */ + const char * name; /*%< Its symbolic name, like "MX" */ + const char * humanname; /*%< Its fun name, like "mail exchanger" */ +}; + +/*% + * Global defines and variables for resolver stub. + */ +#define MAXNS 3 /*%< max # name servers we'll track */ +#define MAXDFLSRCH 3 /*%< # default domain levels to try */ +#define MAXDNSRCH 6 /*%< max # domains in search path */ +#define LOCALDOMAINPARTS 2 /*%< min levels in name that is "local" */ +#define RES_TIMEOUT 5 /*%< min. seconds between retries */ +#define MAXRESOLVSORT 10 /*%< number of net to sort on */ +#define RES_MAXNDOTS 15 /*%< should reflect bit field size */ + +struct __res_state { + int retrans; /*%< retransmission time interval */ + int retry; /*%< number of times to retransmit */ + u_long options; /*%< option flags - see below. */ + int nscount; /*%< number of name servers */ + struct sockaddr_in + nsaddr_list[MAXNS]; /*%< address of name server */ +#define nsaddr nsaddr_list[0] /*%< for backward compatibility */ + u_short id; /*%< current message id */ + char *dnsrch[MAXDNSRCH+1]; /*%< components of domain to search */ + char defdname[256]; /*%< default domain (deprecated) */ + u_long pfcode; /*%< RES_PRF_ flags - see below. */ + unsigned ndots:4; /*%< threshold for initial abs. query */ + unsigned nsort:4; /*%< number of elements in sort_list[] */ + char unused[3]; + struct { + struct in_addr addr; + u_int32_t mask; + } sort_list[MAXRESOLVSORT]; + char pad[72]; /* on an i386 this means 512b total */ +}; + +typedef struct __res_state *res_state; + +/*% + * Resolver options (keep these in synch with res_debug.c, please) + */ +#define RES_INIT 0x00000001 /*%< address initialized */ +#define RES_DEBUG 0x00000002 /*%< print debug messages */ +#define RES_AAONLY 0x00000004 /*%< authoritative answers only (!IMPL)*/ +#define RES_USEVC 0x00000008 /*%< use virtual circuit */ +#define RES_PRIMARY 0x00000010 /*%< query primary server only (!IMPL) */ +#define RES_IGNTC 0x00000020 /*%< ignore truncation errors */ +#define RES_RECURSE 0x00000040 /*%< recursion desired */ +#define RES_DEFNAMES 0x00000080 /*%< use default domain name */ +#define RES_STAYOPEN 0x00000100 /*%< Keep TCP socket open */ +#define RES_DNSRCH 0x00000200 /*%< search up local domain tree */ +#define RES_INSECURE1 0x00000400 /*%< type 1 security disabled */ +#define RES_INSECURE2 0x00000800 /*%< type 2 security disabled */ +#define RES_NOALIASES 0x00001000 /*%< shuts off HOSTALIASES feature */ +#define RES_USE_INET6 0x00002000 /*%< use/map IPv6 in gethostbyname() */ +#define RES_NOTLDQUERY 0x00004000 /*%< Don't query TLD names */ + +#define RES_DEFAULT (RES_RECURSE | RES_DEFNAMES | \ + RES_DNSRCH) + +/*% + * Resolver "pfcode" values. Used by dig. + */ +#define RES_PRF_STATS 0x00000001 +#define RES_PRF_UPDATE 0x00000002 +#define RES_PRF_CLASS 0x00000004 +#define RES_PRF_CMD 0x00000008 +#define RES_PRF_QUES 0x00000010 +#define RES_PRF_ANS 0x00000020 +#define RES_PRF_AUTH 0x00000040 +#define RES_PRF_ADD 0x00000080 +#define RES_PRF_HEAD1 0x00000100 +#define RES_PRF_HEAD2 0x00000200 +#define RES_PRF_TTLID 0x00000400 +#define RES_PRF_HEADX 0x00000800 +#define RES_PRF_QUERY 0x00001000 +#define RES_PRF_REPLY 0x00002000 +#define RES_PRF_INIT 0x00004000 +/* 0x00008000 */ + +#define fp_nquery __fp_nquery +#define fp_query __fp_query +#define hostalias __hostalias +#define p_query __p_query +#define res_close __res_close +#define res_init __res_init +#define res_isourserver __res_isourserver +#define res_mkquery __res_mkquery +#define res_query __res_query +#define res_querydomain __res_querydomain +#define res_search __res_search +#define res_send __res_send + +__BEGIN_DECLS +void fp_nquery(const u_char *, int, FILE *); +void fp_query(const u_char *, FILE *); +const char * hostalias(const char *); +void p_query(const u_char *); +void res_close(void); +int res_init(void); +int res_isourserver(const struct sockaddr_in *); +int res_mkquery(int, const char *, int, int, const u_char *, + int, const u_char *, u_char *, int); +int res_query(const char *, int, int, u_char *, int); +int res_querydomain(const char *, const char *, int, int, + u_char *, int); +int res_search(const char *, int, int, u_char *, int); +int res_send(const u_char *, int, u_char *, int); +__END_DECLS + +extern struct __res_state _res; + + +extern const struct res_sym __p_class_syms[]; +extern const struct res_sym __p_type_syms[]; + +/* Private routines shared between libc/net, named, nslookup and others. */ +#define b64_ntop __b64_ntop +#define b64_pton __b64_pton +#define dn_comp __dn_comp +#define dn_count_labels __dn_count_labels +#define dn_expand __dn_expand +#define dn_skipname __dn_skipname +#define fp_resstat __fp_resstat +#define loc_aton __loc_aton +#define loc_ntoa __loc_ntoa +#define p_cdname __p_cdname +#define p_cdnname __p_cdnname +#define fp_resstat __fp_resstat +#define p_class __p_class +#define p_fqname __p_fqname +#define p_fqnname __p_fqnname +#define p_option __p_option +#define p_secstodate __p_secstodate +#define p_section __p_section +#define p_time __p_time +#define p_type __p_type +#define putlong __putlong +#define putshort __putshort +#define res_dnok __res_dnok +#define res_hnok __res_hnok +#define res_mailok __res_mailok +#define res_nameinquery __res_nameinquery +#define res_ownok __res_ownok +#define res_queriesmatch __res_queriesmatch +#define res_randomid __res_randomid +#define sym_ntop __sym_ntop +#define sym_ntos __sym_ntos +#define sym_ston __sym_ston +#define res_send_setqhook __res_send_setqhook +#define res_send_setrhook __res_send_setrhook +#define res_mkupdate __res_mkupdate +#define res_mkupdrec __res_mkupdrec +#define res_freeupdrec __res_freeupdrec + +__BEGIN_DECLS +int res_hnok(const char *); +int res_ownok(const char *); +int res_mailok(const char *); +int res_dnok(const char *); +int sym_ston(const struct res_sym *, const char *, int *); +const char * sym_ntos(const struct res_sym *, int, int *); +const char * sym_ntop(const struct res_sym *, int, int *); +int b64_ntop(u_char const *, size_t, char *, size_t); +int b64_pton(char const *, u_char *, size_t); +int loc_aton(const char *, u_char *); +const char * loc_ntoa(const u_char *, char *); +int dn_skipname(const u_char *, const u_char *); +void fp_resstat(struct __res_state *, FILE *); +void putlong(u_int32_t, u_char *); +void putshort(u_int16_t, u_char *); +const char * p_class(int); +const char * p_time(u_int32_t); +const char * p_type(int); +const u_char * p_cdnname(const u_char *, const u_char *, int, FILE *); +const u_char * p_cdname(const u_char *, const u_char *, FILE *); +const u_char * p_fqnname(const u_char *, const u_char *, int, char *, int); +const u_char * p_fqname(const u_char *, const u_char *, FILE *); +const char * p_option(u_long); +char * p_secstodate(u_long); +int dn_count_labels(const char *); +int dn_comp(const char *, u_char *, int, u_char **, u_char **); +int dn_expand(const u_char *, const u_char *, const u_char *, + char *, int); +u_int res_randomid(void); +int res_nameinquery(const char *, int, int, const u_char *, + const u_char *); +int res_queriesmatch(const u_char *, const u_char *, + const u_char *, const u_char *); +const char * p_section(int, int); +void res_send_setqhook(res_send_qhook); +void res_send_setrhook(res_send_rhook); + +/* XXX The following depend on the ns_updrec typedef in arpa/nameser.h */ +#ifdef _ARPA_NAMESER_H_ +int res_update (ns_updrec *); +int res_mkupdate (ns_updrec *, u_char *, int); +ns_updrec * res_mkupdrec (int, const char *, u_int, u_int, u_long); +void res_freeupdrec (ns_updrec *); +#endif +__END_DECLS + +#endif /* !_RESOLV_H_ */ |