/*
- * ++Copyright++ 1983, 1987, 1989, 1993
- * -
- * Copyright (c) 1983, 1987, 1989, 1993
+ * 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
* 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. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
* 4. 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.
* 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.
- * -
- * Portions Copyright (c) 1993 by Digital Equipment Corporation.
+ */
+
+/*
+ * 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, and that
- * the name of Digital Equipment Corporation not be used in advertising or
- * publicity pertaining to distribution of the document or software without
- * specific, written prior permission.
+ * copyright notice and this permission notice appear in all copies.
*
- * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
- * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT
- * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
+ * 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
+ * CONSORTIUM 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.
- * -
- * --Copyright--
*/
/*
* @(#)resolv.h 8.1 (Berkeley) 6/2/93
- * $Id$
+ * $BINDId: resolv.h,v 8.31 2000/03/30 20:16:50 vixie Exp $
*/
-#ifndef _RESOLV_H
-#define _RESOLV_H 1
+#ifndef _RESOLV_H_
+
+/* These headers are needed for types used in the `struct res_state'
+ declaration. */
+#include <sys/types.h>
+#include <netinet/in.h>
-#include <features.h>
+#ifndef __need_res_state
+# define _RESOLV_H_
-#include <sys/param.h>
-#if (!defined(BSD)) || (BSD < 199306)
-# include <sys/bitypes.h>
+# include <sys/param.h>
+# include <sys/cdefs.h>
+# include <stdio.h>
+# include <arpa/nameser.h>
+#endif
+
+#ifndef __res_state_defined
+# define __res_state_defined
+
+/*
+ * 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; /* retransmition time interval */
+ int retry; /* number of times to retransmit */
+ unsigned 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 */
+ unsigned short id; /* current message id */
+ /* 2 byte hole here. */
+ char *dnsrch[MAXDNSRCH+1]; /* components of domain to search */
+ char defdname[256]; /* default domain (deprecated) */
+ unsigned long pfcode; /* RES_PRF_ flags - see below. */
+ unsigned ndots:4; /* threshold for initial abs. query */
+ unsigned nsort:4; /* number of elements in sort_list[] */
+ unsigned ipv6_unavail:1; /* connecting to IPv6 server failed */
+ unsigned unused:23;
+ struct {
+ struct in_addr addr;
+ uint32_t mask;
+ } sort_list[MAXRESOLVSORT];
+ /* 4 byte hole here on 64-bit architectures. */
+ void * __glibc_unused_qhook;
+ void * __glibc_unused_rhook;
+ int res_h_errno; /* last one set for this context */
+ int _vcsock; /* PRIVATE: for res_send VC i/o */
+ unsigned int _flags; /* PRIVATE: see below */
+ /* 4 byte hole here on 64-bit architectures. */
+ union {
+ char pad[52]; /* On an i386 this means 512b total. */
+ struct {
+ uint16_t nscount;
+ uint16_t nsmap[MAXNS];
+ int nssocks[MAXNS];
+ uint16_t nscount6;
+ uint16_t nsinit;
+ struct sockaddr_in6 *nsaddrs[MAXNS];
+#ifdef _LIBC
+ unsigned long long int initstamp
+ __attribute__((packed));
#else
-# include <sys/types.h>
+ unsigned int _initstamp[2];
+#endif
+ } _ext;
+ } _u;
+};
+
+typedef struct __res_state *res_state;
+# undef __need_res_state
#endif
-#include <stdio.h>
-#include <netinet/in.h>
+#ifdef _RESOLV_H_
/*
* 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
* is new enough to contain a certain feature.
*/
-#define __RES 19960801
+#define __RES 19991006
/*
* Resolver configuration file.
* Normally not present, but may contain the address of the
- * initial name server(s) to query and the domain search list.
+ * inital name server(s) to query and the domain search list.
*/
#ifndef _PATH_RESCONF
#define _PATH_RESCONF "/etc/resolv.conf"
#endif
+struct res_sym {
+ int number; /* Identifying number, like T_MX */
+ char * name; /* Its symbolic name, like "MX" */
+ char * humanname; /* Its fun name, like "mail exchanger" */
+};
+
/*
- * Global defines and variables for resolver stub.
+ * Resolver flags (used to be discrete per-module statics ints).
*/
-#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_F_VC 0x00000001 /* socket is TCP */
+#define RES_F_CONN 0x00000002 /* socket is connected */
+#define RES_F_EDNS0ERR 0x00000004 /* EDNS0 caused errors */
-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 */
-};
+/* res_findzonecut() options */
+#define RES_EXHAUSTIVE 0x00000001 /* always do all queries */
/*
* 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_AAONLY \
+ __glibc_macro_warning ("RES_AAONLY is deprecated") 0x00000004
#define RES_USEVC 0x00000008 /* use virtual circuit */
-#define RES_PRIMARY 0x00000010 /* query primary server only (!IMPL) */
+#define RES_PRIMARY \
+ __glibc_macro_warning ("RES_PRIMARY is deprecated") 0x00000010
#define RES_IGNTC 0x00000020 /* ignore trucation errors */
#define RES_RECURSE 0x00000040 /* recursion desired */
#define RES_DEFNAMES 0x00000080 /* use default domain name */
#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_ROTATE 0x00004000 /* rotate ns list after each query */
+#define RES_NOCHECKNAME \
+ __glibc_macro_warning ("RES_NOCHECKNAME is deprecated") 0x00008000
+#define RES_KEEPTSIG \
+ __glibc_macro_warning ("RES_KEEPTSIG is deprecated") 0x00010000
+#define RES_BLAST 0x00020000 /* blast all recursive servers */
+#define RES_USEBSTRING 0x00040000 /* IPv6 reverse lookup with byte
+ strings */
+#define RES_NOIP6DOTINT 0x00080000 /* Do not use .ip6.int in IPv6
+ reverse lookup */
+#define RES_USE_EDNS0 0x00100000 /* Use EDNS0. */
+#define RES_SNGLKUP 0x00200000 /* one outstanding request at a time */
+#define RES_SNGLKUPREOP 0x00400000 /* -"-, but open new socket for each
+ request */
+#define RES_USE_DNSSEC 0x00800000 /* use DNSSEC using OK bit in OPT */
+#define RES_NOTLDQUERY 0x01000000 /* Do not look up unqualified name
+ as a TLD. */
-#define RES_DEFAULT (RES_RECURSE | RES_DEFNAMES | RES_DNSRCH)
+#define RES_DEFAULT (RES_RECURSE|RES_DEFNAMES|RES_DNSRCH|RES_NOIP6DOTINT)
/*
* Resolver "pfcode" values. Used by dig.
*/
#define RES_PRF_STATS 0x00000001
-/* 0x00000002 */
+#define RES_PRF_UPDATE 0x00000002
#define RES_PRF_CLASS 0x00000004
#define RES_PRF_CMD 0x00000008
#define RES_PRF_QUES 0x00000010
#define RES_PRF_HEADX 0x00000800
#define RES_PRF_QUERY 0x00001000
#define RES_PRF_REPLY 0x00002000
-#define RES_PRF_INIT 0x00004000
+#define RES_PRF_INIT 0x00004000
/* 0x00008000 */
-/* hooks are still experimental as of 4.9.2 */
-typedef enum { res_goahead, res_nextns, res_modified, res_done, res_error }
- res_sendhookact;
-
-typedef res_sendhookact (*res_send_qhook)__PMT((struct sockaddr_in * const *ns,
- const u_char **query,
- int *querylen,
- u_char *ans,
- int anssiz,
- int *resplen));
-
-typedef res_sendhookact (*res_send_rhook)__PMT((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 */
- char * name; /* Its symbolic name, like "MX" */
- char * humanname; /* Its fun name, like "mail exchanger" */
-};
-
-extern struct __res_state _res;
-extern const struct res_sym __p_class_syms[];
-extern const struct res_sym __p_type_syms[];
+/* Things involving an internal (static) resolver context. */
+__BEGIN_DECLS
+extern struct __res_state *__res_state(void) __attribute__ ((__const__));
+__END_DECLS
+#define _res (*__res_state())
-/* Private routines shared between libc/net, named, nslookup and others. */
-#define res_hnok __res_hnok
-#define res_ownok __res_ownok
-#define res_mailok __res_mailok
-#define res_dnok __res_dnok
-#define sym_ston __sym_ston
-#define sym_ntos __sym_ntos
-#define sym_ntop __sym_ntop
-#define b64_ntop __b64_ntop
-#define b64_pton __b64_pton
-#define loc_ntoa __loc_ntoa
-#define loc_aton __loc_aton
-#define dn_skipname __dn_skipname
-#define fp_resstat __fp_resstat
-#define fp_query __fp_query
-#define fp_nquery __fp_nquery
-#define hostalias __hostalias
-#define putlong __putlong
-#define putshort __putshort
-#define p_class __p_class
-#define p_time __p_time
-#define p_type __p_type
-#define p_query __p_query
-#define p_cdnname __p_cdnname
-#define p_cdname __p_cdname
-#define p_fqnname __p_fqnname
-#define p_fqname __p_fqname
-#define p_rr __p_rr
-#define p_option __p_option
-#define p_secstodate __p_secstodate
-#define dn_count_labels __dn_count_labels
-#define dn_comp __dn_comp
-#define res_randomid __res_randomid
-#define res_send __res_send
-#define res_isourserver __res_isourserver
-#define res_nameinquery __res_nameinquery
-#define res_queriesmatch __res_queriesmatch
-#define res_close __res_close
+#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
-#ifdef BIND_RES_POSIX3
-#define dn_expand __dn_expand
-#define res_init __res_init
-#define res_query __res_query
-#define res_search __res_search
-#define res_querydomain __res_querydomain
-#define res_mkquery __res_mkquery
-#endif
+__BEGIN_DECLS
+void fp_nquery (const unsigned char *, int, FILE *) __THROW;
+void fp_query (const unsigned char *, FILE *) __THROW;
+const char * hostalias (const char *) __THROW;
+void p_query (const unsigned char *) __THROW;
+void res_close (void) __THROW;
+int res_init (void) __THROW;
+int res_isourserver (const struct sockaddr_in *) __THROW;
+int res_mkquery (int, const char *, int, int,
+ const unsigned char *, int, const unsigned char *,
+ unsigned char *, int) __THROW;
+int res_query (const char *, int, int, unsigned char *, int)
+ __THROW;
+int res_querydomain (const char *, const char *, int, int,
+ unsigned char *, int) __THROW;
+int res_search (const char *, int, int, unsigned char *, int)
+ __THROW;
+int res_send (const unsigned char *, int, unsigned char *, int)
+ __THROW;
+__END_DECLS
+#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_secstodate __p_secstodate
+#define p_section __p_section
+#define p_time __p_time
+#define p_type __p_type
+#define p_rcode __p_rcode
+#define putlong __putlong
+#define putshort __putshort
+#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_npquery __res_npquery
+#define res_nquery __res_nquery
+#define res_nquerydomain __res_nquerydomain
+#define res_nsearch __res_nsearch
+#define res_nsend __res_nsend
+#define res_nisourserver __res_nisourserver
+#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
__BEGIN_DECLS
-int res_hnok __P((const char *));
-int res_ownok __P((const char *));
-int res_mailok __P((const char *));
-int res_dnok __P((const char *));
-int sym_ston __P((const struct res_sym *, char *, int *));
-const char * sym_ntos __P((const struct res_sym *, int, int *));
-const char * sym_ntop __P((const struct res_sym *, int, int *));
-int b64_ntop __P((u_char const *, size_t, char *, size_t));
-int b64_pton __P((char const *, u_char *, size_t));
-int loc_aton __P((const char *, u_char *));
-const char * loc_ntoa __P((const u_char *, char *));
-int dn_skipname __P((const u_char *, const u_char *));
-void fp_resstat __P((struct __res_state *, FILE *));
-void fp_query __P((const u_char *, FILE *));
-void fp_nquery __P((const u_char *, int, FILE *));
-const char * hostalias __P((const char *));
-void putlong __P((u_int32_t, u_char *));
-void putshort __P((u_int16_t, u_char *));
-const char * p_class __P((int));
-const char * p_time __P((u_int32_t));
-const char * p_type __P((int));
-void p_query __P((const u_char *));
-const u_char * p_cdnname __P((const u_char *, const u_char *, int, FILE *));
-const u_char * p_cdname __P((const u_char *, const u_char *, FILE *));
-const u_char * p_fqnname __P((const u_char *cp, const u_char *msg,
- int, char *, int));
-const u_char * p_fqname __P((const u_char *, const u_char *, FILE *));
-const u_char * p_rr __P((const u_char *, const u_char *, FILE *));
-const char * p_option __P((u_long option));
-char * p_secstodate __P((u_long));
-int dn_count_labels __P((char *));
-int dn_comp __P((const char *, u_char *, int,
- u_char **, u_char **));
-int dn_expand __P((const u_char *, const u_char *, const u_char *,
- char *, int));
-int res_init __P((void));
-u_int res_randomid __P((void));
-int res_query __P((const char *, int, int, u_char *, int));
-int res_search __P((const char *, int, int, u_char *, int));
-int res_querydomain __P((const char *, const char *, int, int,
- u_char *, int));
-int res_mkquery __P((int, const char *, int, int, const u_char *, int,
- const u_char *, u_char *, int));
-int res_send __P((const u_char *, int, u_char *, int));
-int res_isourserver __P((const struct sockaddr_in *));
-int res_nameinquery __P((const char *, int, int,
- const u_char *, const u_char *));
-int res_queriesmatch __P((const u_char *, const u_char *,
- const u_char *, const u_char *));
-void res_close __P((void));
+int res_hnok (const char *) __THROW;
+int res_ownok (const char *) __THROW;
+int res_mailok (const char *) __THROW;
+int res_dnok (const char *) __THROW;
+int sym_ston (const struct res_sym *, const char *, int *) __THROW;
+const char * sym_ntos (const struct res_sym *, int, int *) __THROW;
+const char * sym_ntop (const struct res_sym *, int, int *) __THROW;
+int b64_ntop (const unsigned char *, size_t, char *, size_t)
+ __THROW;
+int b64_pton (char const *, unsigned char *, size_t) __THROW;
+int loc_aton (const char *__ascii, unsigned char *__binary) __THROW;
+const char * loc_ntoa (const unsigned char *__binary, char *__ascii) __THROW;
+int dn_skipname (const unsigned char *, const unsigned char *)
+ __THROW;
+void putlong (uint32_t, unsigned char *) __THROW;
+void putshort (uint16_t, unsigned char *) __THROW;
+const char * p_class (int) __THROW;
+const char * p_time (uint32_t) __THROW;
+const char * p_type (int) __THROW;
+const char * p_rcode (int) __THROW;
+const unsigned char * p_cdnname (const unsigned char *,
+ const unsigned char *, int, FILE *) __THROW;
+const unsigned char * p_cdname (const unsigned char *, const unsigned char *,
+ FILE *) __THROW;
+const unsigned char * p_fqnname (const unsigned char *__cp,
+ const unsigned char *__msg,
+ int, char *, int) __THROW;
+const unsigned char * p_fqname (const unsigned char *,
+ const unsigned char *, FILE *) __THROW;
+const char * p_option (unsigned long __option) __THROW;
+char * p_secstodate (unsigned long) __THROW;
+int dn_count_labels (const char *) __THROW;
+int dn_comp (const char *, unsigned char *, int, unsigned char **,
+ unsigned char **) __THROW;
+int dn_expand (const unsigned char *, const unsigned char *,
+ const unsigned char *, char *, int) __THROW;
+unsigned int res_randomid (void) __THROW;
+int res_nameinquery (const char *, int, int,
+ const unsigned char *,
+ const unsigned char *) __THROW;
+int res_queriesmatch (const unsigned char *,
+ const unsigned char *,
+ const unsigned char *,
+ const unsigned char *) __THROW;
+const char * p_section (int __section, int __opcode) __THROW;
+/* Things involving a resolver context. */
+int res_ninit (res_state) __THROW;
+int res_nisourserver (const res_state,
+ const struct sockaddr_in *) __THROW;
+void fp_resstat (const res_state, FILE *) __THROW;
+void res_npquery (const res_state, const unsigned char *, int,
+ FILE *) __THROW;
+const char * res_hostalias (const res_state, const char *, char *, size_t)
+ __THROW;
+int res_nquery (res_state, const char *, int, int,
+ unsigned char *, int) __THROW;
+int res_nsearch (res_state, const char *, int, int,
+ unsigned char *, int) __THROW;
+int res_nquerydomain (res_state, const char *, const char *, int,
+ int, unsigned char *, int) __THROW;
+int res_nmkquery (res_state, int, const char *, int, int,
+ const unsigned char *, int,
+ const unsigned char *, unsigned char *, int)
+ __THROW;
+int res_nsend (res_state, const unsigned char *, int,
+ unsigned char *, int) __THROW;
+void res_nclose (res_state) __THROW;
__END_DECLS
+#endif
-#endif /* resolv.h */
+#endif /* !_RESOLV_H_ */
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