auto import from //depot/cupcake/@135843

1 files changed, 499 insertions, 0 deletions

diff --git a/libc/private/resolv_private.h b/libc/private/resolv_private.h
new file mode 100644
index 0000000..0f3c6c0
--- /dev/null
+++ b/libc/private/resolv_private.h
@@ -0,0 +1,499 @@
+/*	$NetBSD: resolv.h,v 1.31 2005/12/26 19:01:47 perry Exp $	*/
+
+/*
+ * 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
+ *	Id: resolv.h,v 1.7.2.11.4.2 2004/06/25 00:41:05 marka Exp
+ */
+
+#ifndef _RESOLV_PRIVATE_H_
+#define	_RESOLV_PRIVATE_H_
+
+#include <resolv.h>
+#include "resolv_static.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
+ * 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	20030124
+
+/*
+ * This used to be defined in res_query.c, now it's in herror.c.
+ * [XXX no it's not.  It's in irs/irs_data.c]
+ * It was
+ * never extern'd by any *.h file before it was placed here.  For thread
+ * aware programs, the last h_errno value set is stored in res->h_errno.
+ *
+ * XXX:	There doesn't seem to be a good reason for exposing RES_SET_H_ERRNO
+ *	(and __h_errno_set) to the public via <resolv.h>.
+ * XXX:	__h_errno_set is really part of IRS, not part of the resolver.
+ *	If somebody wants to build and use a resolver that doesn't use IRS,
+ *	what do they do?  Perhaps something like
+ *		#ifdef WANT_IRS
+ *		# define RES_SET_H_ERRNO(r,x) __h_errno_set(r,x)
+ *		#else
+ *		# define RES_SET_H_ERRNO(r,x) (h_errno = (r)->res_h_errno = (x))
+ *		#endif
+ */
+
+#define RES_SET_H_ERRNO(r,x) (h_errno = (r)->res_h_errno = (x))
+struct __res_state; /* forward */
+
+/*
+ * 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
+#ifdef ANDROID_CHANGES
+#define _PATH_RESCONF        "/etc/ppp/resolv.conf"
+#else
+#define _PATH_RESCONF        "/etc/resolv.conf"
+#endif
+#endif
+
+typedef enum { res_goahead, res_nextns, res_modified, res_done, res_error }
+	res_sendhookact;
+
+typedef res_sendhookact (*res_send_qhook)(struct sockaddr * const *,
+					      const u_char **, int *,
+					      u_char *, int, int *);
+
+typedef res_sendhookact (*res_send_rhook)(const struct sockaddr *,
+					      const u_char *, int, u_char *,
+					      int, int *);
+
+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 */
+#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_ext;
+
+struct __res_state {
+	int	retrans;	 	/* retransmission time interval */
+	int	retry;			/* number of times to retransmit */
+#ifdef sun
+	u_int	options;		/* option flags - see below. */
+#else
+	u_long	options;		/* option flags - see below. */
+#endif
+	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) */
+#ifdef sun
+	u_int	pfcode;			/* RES_PRF_ flags - see below. */
+#else
+	u_long	pfcode;			/* RES_PRF_ flags - see below. */
+#endif
+	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;
+		uint32_t	mask;
+	} sort_list[MAXRESOLVSORT];
+#ifdef __OLD_RES_STATE
+	char lookups[4];
+#else
+	res_send_qhook qhook;		/* query hook */
+	res_send_rhook rhook;		/* response hook */
+	int	res_h_errno;		/* last one set for this context */
+	int	_vcsock;		/* PRIVATE: for res_send VC i/o */
+	u_int	_flags;			/* PRIVATE: see below */
+	u_int	_pad;			/* make _u 64 bit aligned */
+	union {
+		/* On an 32-bit arch this means 512b total. */
+		char	pad[72 - 4*sizeof (int) - 2*sizeof (void *)];
+		struct {
+			uint16_t		nscount;
+			uint16_t		nstimes[MAXNS];	/* ms. */
+			int			nssocks[MAXNS];
+			struct __res_state_ext *ext;	/* extention for IPv6 */
+		} _ext;
+	} _u;
+#endif
+        struct res_static   rstatic[1];
+};
+
+typedef struct __res_state *res_state;
+
+union res_sockaddr_union {
+	struct sockaddr_in	sin;
+#ifdef IN6ADDR_ANY_INIT
+	struct sockaddr_in6	sin6;
+#endif
+#ifdef ISC_ALIGN64
+	int64_t			__align64;	/* 64bit alignment */
+#else
+	int32_t			__align32;	/* 32bit alignment */
+#endif
+	char			__space[128];   /* max size */
+};
+
+/*
+ * Resolver flags (used to be discrete per-module statics ints).
+ */
+#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_F__UNUSED	0x00000008	/* (unused) */
+#define	RES_F_LASTMASK	0x000000F0	/* ordinal server of last res_nsend */
+#define	RES_F_LASTSHIFT	4		/* bit position of LASTMASK "flag" */
+#define	RES_GETLAST(res) (((res)._flags & RES_F_LASTMASK) >> RES_F_LASTSHIFT)
+
+/* res_findzonecut2() options */
+#define	RES_EXHAUSTIVE	0x00000001	/* always do all queries */
+#define	RES_IPV4ONLY	0x00000002	/* IPv4 only */
+#define	RES_IPV6ONLY	0x00000004	/* IPv6 only */
+
+/*
+ * 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 trucation 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_ROTATE	0x00004000	/* rotate ns list after each query */
+#define	RES_NOCHECKNAME	0x00008000	/* do not check names for sanity. */
+#define	RES_KEEPTSIG	0x00010000	/* do not strip TSIG records */
+#define	RES_BLAST	0x00020000	/* blast all recursive servers */
+#define RES_NOTLDQUERY	0x00100000	/* don't unqualified name as a tld */
+#define RES_USE_DNSSEC	0x00200000	/* use DNSSEC using OK bit in OPT */
+/* #define RES_DEBUG2	0x00400000 */	/* nslookup internal */
+/* KAME extensions: use higher bit to avoid conflict with ISC use */
+#define RES_USE_DNAME	0x10000000	/* use DNAME */
+#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)
+
+/*
+ * 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
+#define RES_PRF_TRUNC	0x00008000
+/*			0x00010000	*/
+
+/* Things involving an internal (static) resolver context. */
+__BEGIN_DECLS
+extern struct __res_state *__res_get_state(void);
+extern void __res_put_state(struct __res_state *);
+
+#ifndef ANDROID_CHANGES
+/*
+ * Source and Binary compatibility; _res will not work properly
+ * with multi-threaded programs.
+ */
+extern struct __res_state *__res_state(void);
+#define _res (*__res_state())
+#endif
+
+__END_DECLS
+
+#ifndef __BIND_NOSTATIC
+#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_opt			__res_opt
+#define res_isourserver		__res_isourserver
+#define	res_querydomain		__res_querydomain
+#define res_send		__res_send
+#define res_sendsigned		__res_sendsigned
+
+#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_mkquery	__res_mkquery
+#endif
+
+__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_opt(int, u_char *, int, int);
+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);
+int		res_sendsigned(const u_char *, int, ns_tsig_key *, u_char *, int);
+__END_DECLS
+#endif
+
+#if !defined(SHARED_LIBBIND) || defined(LIB)
+/*
+ * If libbind is a shared object (well, DLL anyway)
+ * these externs break the linker when resolv.h is
+ * included by a lib client (like named)
+ * Make them go away if a client is including this
+ *
+ */
+extern const struct res_sym __p_key_syms[];
+extern const struct res_sym __p_cert_syms[];
+extern const struct res_sym __p_class_syms[];
+extern const struct res_sym __p_type_syms[];
+extern const struct res_sym __p_rcode_syms[];
+#endif /* SHARED_LIBBIND */
+
+#ifndef ADNROID_CHANGES
+#define b64_ntop		__b64_ntop
+#define b64_pton		__b64_pton
+#endif
+
+#define dn_comp			__dn_comp
+#define dn_count_labels		__dn_count_labels
+#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 p_sockun		__p_sockun
+#define putlong			__putlong
+#define putshort		__putshort
+#define res_dnok		__res_dnok
+#define res_findzonecut		__res_findzonecut
+#define res_findzonecut2	__res_findzonecut2
+#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_pquery		__res_pquery
+#define res_nquery		__res_nquery
+#define res_nquerydomain	__res_nquerydomain
+#define res_nsearch		__res_nsearch
+#define res_nsend		__res_nsend
+#define res_nsendsigned		__res_nsendsigned
+#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
+#define res_nopt		__res_nopt
+#define res_ndestroy		__res_ndestroy
+#define	res_nametoclass		__res_nametoclass
+#define	res_nametotype		__res_nametotype
+#define	res_setservers		__res_setservers
+#define	res_getservers		__res_getservers
+#define	res_buildprotolist	__res_buildprotolist
+#define	res_destroyprotolist	__res_destroyprotolist
+#define	res_destroyservicelist	__res_destroyservicelist
+#define	res_get_nibblesuffix	__res_get_nibblesuffix
+#define	res_get_nibblesuffix2	__res_get_nibblesuffix2
+#define	res_ourserver_p		__res_ourserver_p
+#define	res_protocolname	__res_protocolname
+#define	res_protocolnumber	__res_protocolnumber
+#define	res_send_setqhook	__res_send_setqhook
+#define	res_send_setrhook	__res_send_setrhook
+#define	res_servicename		__res_servicename
+#define	res_servicenumber	__res_servicenumber
+__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 *);
+#ifndef ANDROID_CHANGES
+int		b64_ntop(u_char const *, size_t, char *, size_t);
+int		b64_pton(char const *, u_char *, size_t);
+#endif
+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		putlong(uint32_t, u_char *);
+void		putshort(uint16_t, u_char *);
+#ifndef __ultrix__
+uint16_t	_getshort(const u_char *);
+uint32_t	_getlong(const u_char *);
+#endif
+const char *	p_class(int);
+const char *	p_time(uint32_t);
+const char *	p_type(int);
+const char *	p_rcode(int);
+const char *	p_sockun(union res_sockaddr_union, char *, size_t);
+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);
+/* Things involving a resolver context. */
+int		res_ninit(res_state);
+int		res_nisourserver(const res_state, const struct sockaddr_in *);
+void		fp_resstat(const res_state, FILE *);
+void		res_pquery(const res_state, const u_char *, int, FILE *);
+const char *	res_hostalias(const res_state, const char *, char *, size_t);
+int		res_nquery(res_state, const char *, int, int, u_char *, int);
+int		res_nsearch(res_state, const char *, int, int, u_char *, int);
+int		res_nquerydomain(res_state, const char *, const char *,
+				      int, int, u_char *, int);
+int		res_nmkquery(res_state, int, const char *, int, int,
+				  const u_char *, int, const u_char *,
+				  u_char *, int);
+int		res_nsend(res_state, const u_char *, int, u_char *, int);
+int		res_nsendsigned(res_state, const u_char *, int,
+				     ns_tsig_key *, u_char *, int);
+int		res_findzonecut(res_state, const char *, ns_class, int,
+				     char *, size_t, struct in_addr *, int);
+int		res_findzonecut2(res_state, const char *, ns_class, int,
+				      char *, size_t,
+				      union res_sockaddr_union *, int);
+void		res_nclose(res_state);
+int		res_nopt(res_state, int, u_char *, int, int);
+void		res_send_setqhook(res_send_qhook);
+void		res_send_setrhook(res_send_rhook);
+int		__res_vinit(res_state, int);
+void		res_destroyservicelist(void);
+const char *	res_servicename(uint16_t, const char *);
+const char *	res_protocolname(int);
+void		res_destroyprotolist(void);
+void		res_buildprotolist(void);
+const char *	res_get_nibblesuffix(res_state);
+const char *	res_get_nibblesuffix2(res_state);
+void		res_ndestroy(res_state);
+uint16_t	res_nametoclass(const char *, int *);
+uint16_t	res_nametotype(const char *, int *);
+void		res_setservers(res_state,
+				    const union res_sockaddr_union *, int);
+int		res_getservers(res_state,
+				    union res_sockaddr_union *, int);
+
+int res_get_dns_changed();
+u_int  res_randomid(void);
+
+__END_DECLS
+
+#endif /* !_RESOLV_PRIVATE_H_ */