* Copyright 2009-2020, Haiku, Inc. All rights reserved.
* Distributed under the terms of the MIT License.
*/
* 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 INTERNET SOFTWARE CONSORTIUM DISCLAIMS
* ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
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* 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.
*/
* 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.
*/
#ifndef _RESOLV_H_
#define _RESOLV_H_
#include <stdint.h>
#include <stdio.h>
#include <arpa/nameser.h>
#include <netinet/in.h>
#ifdef __cplusplus
extern "C" {
#endif
#define __RES 19991006
struct res_sym {
int number;
const char *name;
const char *humanname;
};
* 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 */
#define RES_MAXRETRANS 30 /* only for resolv.conf/RES_OPTIONS */
#define RES_MAXRETRY 5 /* only for resolv.conf/RES_OPTIONS */
#define RES_DFLRETRY 2 /* Default #/tries. */
#define RES_MAXTIME 65535 /* Infinity, in milliseconds. */
struct __res_state {
int retrans;
int retry;
unsigned long options;
int nscount;
struct sockaddr_in
nsaddr_list[MAXNS];
unsigned short id;
char *dnsrch[MAXDNSRCH+1];
char defdname[256];
unsigned long pfcode;
unsigned ndots:4;
unsigned nsort:4;
char unused[3];
struct {
struct in_addr addr;
uint32_t mask;
} sort_list[MAXRESOLVSORT];
void* qhook;
void* rhook;
int res_h_errno;
int _vcsock;
unsigned int _flags;
unsigned char _rnd[16];
unsigned int _pad;
union {
char pad[56 - 4*sizeof (int) - 2*sizeof (void *)];
struct {
uint16_t nscount;
uint16_t nstimes[MAXNS];
int nssocks[MAXNS];
struct __res_state_ext *ext;
} _ext;
} _u;
};
typedef struct __res_state *res_state;
#define RES_F_VC 0x00000001 /* socket is TCP */
#define RES_F_CONN 0x00000002 /* socket is connected */
#define RES_F_EDNS0ERR 0x00000004 /* EDNS0 caused errors */
#define RES_EXHAUSTIVE 0x00000001 /* always do all queries */
#define RES_IPV4ONLY 0x00000002 /* IPv4 only */
#define RES_IPV6ONLY 0x00000004 /* IPv6 only */
#define RES_INIT (1 << 0) /* address initialized */
#define RES_DEBUG (1 << 1) /* print debug messages */
#define RES_AAONLY (1 << 2) /* authoritative answers only (!IMPL)*/
#define RES_USEVC (1 << 3) /* use virtual circuit */
#define RES_PRIMARY (1 << 4) /* query primary server only (!IMPL) */
#define RES_IGNTC (1 << 5) /* ignore trucation errors */
#define RES_RECURSE (1 << 6) /* recursion desired */
#define RES_DEFNAMES (1 << 7) /* use default domain name */
#define RES_STAYOPEN (1 << 8) /* Keep TCP socket open */
#define RES_DNSRCH (1 << 9) /* search up local domain tree */
#define RES_INSECURE1 (1 << 10) /* type 1 security disabled */
#define RES_INSECURE2 (1 << 11) /* type 2 security disabled */
#define RES_NOALIASES (1 << 12) /* shuts off HOSTALIASES feature */
#define RES_USE_INET6 (1 << 13) /* use/map IPv6 in gethostbyname() */
#define RES_ROTATE (1 << 14) /* rotate ns list after each query */
#define RES_NOCHECKNAME (1 << 15) /* do not check names for sanity. */
#define RES_KEEPTSIG (1 << 16) /* do not strip TSIG records */
#define RES_BLAST (1 << 17) /* blast all recursive servers */
#define RES_NOTLDQUERY (1 << 20) /* don't unqualified name as a tld */
#define RES_USE_DNSSEC (1 << 21) /* use DNSSEC using OK bit in OPT */
#define RES_USE_INET4 (1 << 23) /* use IPv4 in gethostbyname() */
#define RES_USE_EDNS0 0x40000000 /* use EDNS0 if configured */
#define RES_NO_NIBBLE2 0x80000000 /* disable alternate nibble lookup */
#define RES_DEFAULT \
(RES_RECURSE | RES_DEFNAMES | RES_DNSRCH | RES_NO_NIBBLE2)
#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
extern struct __res_state *__res_state(void) __attribute__ ((__const__));
#define _res (*__res_state())
#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
void fp_nquery(const unsigned char *, int, FILE *);
void fp_query(const unsigned char *, FILE *);
const char *hostalias(const char *);
void p_query(const unsigned 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 unsigned char *,
int, const unsigned char *, unsigned char *, int);
int res_query(const char *, int, int, unsigned char *, int);
int res_querydomain(const char *, const char *, int, int,
unsigned char *, int);
int res_search(const char *, int, int, unsigned char *, int);
int res_send(const unsigned char *, int, unsigned char *, int);
#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 p_class __p_class
#define p_fqname __p_fqname
#define p_fqnname __p_fqnname
#define p_option __p_option
#define p_time __p_time
#define p_type __p_type
#define p_rcode __p_rcode
#define res_dnok __res_dnok
#define res_hnok __res_hnok
#define res_hostalias __res_hostalias
#define res_mailok __res_mailok
#define res_nameinquery __res_nameinquery
#define res_nclose __res_nclose
#define res_ninit __res_ninit
#define res_nmkquery __res_nmkquery
#define res_nquery __res_nquery
#define res_nquerydomain __res_nquerydomain
#define res_nsearch __res_nsearch
#define res_nsend __res_nsend
#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
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(unsigned char const *, size_t, char *, size_t);
int b64_pton(char const *, unsigned char *, size_t);
int loc_aton(const char *, unsigned char *);
const char * loc_ntoa(const unsigned char *, char *);
int dn_skipname(const unsigned char *, const unsigned char *);
const char * p_class(int);
const char * p_time(uint32_t);
const char * p_type(int);
const char * p_rcode(int);
const unsigned char * p_cdnname(const unsigned char *, const unsigned char *,
int, FILE *);
const unsigned char * p_cdname(const unsigned char *, const unsigned char *,
FILE *);
const unsigned char * p_fqnname(const unsigned char *, const unsigned char *,
int, char *, int);
const unsigned char * p_fqname(const unsigned char *, const unsigned char *,
FILE *);
const char * p_option(unsigned long);
int dn_count_labels(const char *);
int dn_comp(const char *, unsigned char *, int, unsigned char **,
unsigned char **);
int dn_expand(const unsigned char *, const unsigned char *,
const unsigned char *, char *, int);
unsigned int res_randomid(void);
int res_nameinquery(const char *, int, int, const unsigned char *,
const unsigned char *);
int res_queriesmatch(const unsigned char *, const unsigned char *,
const unsigned char *, const unsigned char *);
int res_ninit(res_state);
void fp_resstat(const res_state, FILE *);
const char * res_hostalias(const res_state, const char *, char *, size_t);
int res_nquery(res_state, const char *, int, int, unsigned char *,
int);
int res_nsearch(res_state, const char *, int, int, unsigned char *,
int);
int res_nquerydomain(res_state, const char *, const char *, int,
int, unsigned char *, int);
int res_nmkquery(res_state, int, const char *, int, int,
const unsigned char *, int, const unsigned char *,
unsigned char *, int);
int res_nsend(res_state, const unsigned char *, int, unsigned char *,
int);
void res_nclose(res_state);
#ifdef __cplusplus
}
#endif
#endif
