Update.

1999-12-03  Andreas Jaeger  <aj@suse.de>

	* nss/getXXbyYY.c: Include <resolv.h>
	(FUNCTION_NAME): Use res_ninit instead of res_init.

	* nss/getXXbyYY_r.c [NEED__RES]: Include <resolv.h> for _res
	declaration and prototypes.
	Remove extra _res declaration.
	(INTERNAL): Use thread aware res_ninit function.

	* inet/gethstbyad_r.c: Include <resolv.h>.

	* resolv/res_data.c: Update from Bind 8.2.2-P5.  Moved res_init to
	res_libc.c.  Disabled unneeded functions.

	* resolv/res_libc.c: New file.

	* Versions.def: Add version GLIBC_2.2 for libpthread.
	Add versions GLIBC_2.1 and GLIBC_2.2 for libresolv.

	* include/resolv.h: Add internal interfaces.

	* resolv/Makefile (routines): Add new files.
	(libresolv-routines): Likewise.
	(distribute): Likewise.

	* resolv/gethnamaddr.c: Use thread safe resolver functions.
	* resolv/nss_dns/dns-host.c: Likewise.
	* resolv/nss_dns/dns-network.c: Likewise.

	* resolv/arpa/nameser.h: Update from Bind 8.2.2-P5.
	* resolv/nsap_addr.c: Likewise.
	* resolv/res_comp.c: Likewise.
	* resolv/res_debug.c: Likewise.
	* resolv/res_init.c: Likewise.
	* resolv/res_mkquery.c: Likewise.
	* resolv/res_query.c: Likewise.
	* resolv/res_send.c: Likewise.
	* resolv/resolv.h: Likewise.

	* resolv/Versions: Add __res_state and __res_ninit with version
	GLIBC_2.2 to libc.
	Add new interfaces with version GLIBC_2.2 to libresolv.

	* resolv/Banner: Update.

	* include/arpa/nameser_compat.h: New file.

	* resolv/ns_name.c: New file from Bind 8.2.2-P5.
	* resolv/ns_netint.c: Likewise.
	* resolv/ns_parse.c: Likewise.
	* resolv/ns_print.c: Likewise.
	* resolv/ns_samedomain.c: Likewise.
	* resolv/ns_ttl.c: Likewise.
	* resolv/arpa/nameser_compat.h: Likewise.
	* resolv/res_debug.h: Likewise.

	Some patches are based on work done by Adam D. Bradley
	<artdodge@cs.bu.edu>.

	* sysdeps/unix/sysv/linux/configure.in: Remove check for ldconfig,
	set always use_ldconfig instead.

1 files changed, 207 insertions, 92 deletions

diff --git a/resolv/resolv.h b/resolv/resolv.h
index 58742e90bb..b101262f51 100644
--- a/resolv/resolv.h
+++ b/resolv/resolv.h
@@ -50,6 +50,23 @@
  */
 
 /*
+ * 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
+ * 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.
+ */
+
+/*
  *	@(#)resolv.h	8.1 (Berkeley) 6/2/93
  *	$Id$
  */
@@ -76,7 +93,35 @@
  * is new enough to contain a certain feature.
  */
 
-#define	__RES	19960801
+#define	__RES	19991006
+
+/*
+ * 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)			\
+  do						\
+    {						\
+      (r)->res_h_errno = x;			\
+      __set_h_errno(x);				\
+    }						\
+  while (0)
+
+struct __res_state; /* forward */
 
 /*
  * Resolver configuration file.
@@ -88,6 +133,29 @@
 #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)__P((struct sockaddr_in * const *ns,
+					      const u_char **query,
+					      int *querylen,
+					      u_char *ans,
+					      int anssiz,
+					      int *resplen));
+
+typedef res_sendhookact (*res_send_rhook)__P((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" */
+};
+
 /*
  * Global defines and variables for resolver stub.
  */
@@ -99,6 +167,9 @@
 #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. */
 
 struct __res_state {
 	int	retrans;	 	/* retransmission time interval */
@@ -119,9 +190,25 @@ struct __res_state {
 		struct in_addr	addr;
 		u_int32_t	mask;
 	} sort_list[MAXRESOLVSORT];
-	char	pad[72];		/* on an i386 this means 512b total */
+	res_send_qhook qhook;		/* query hook */
+	res_send_rhook rhook;		/* response hook */
+	int	res_h_errno;		/* last one set for this context */
+	int	_sock;			/* PRIVATE: for res_send i/o */
+	u_int	_flags;			/* PRIVATE: see below */
+	char	pad[52];		/* On an i386 this means 512b total. */
 };
 
+typedef struct __res_state *res_state;
+
+/*
+ * 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 */
+
+/* res_findzonecut() options */
+#define	RES_EXHAUSTIVE	0x00000001	/* always do all queries */
+
 /*
  * Resolver options (keep these in synch with res_debug.c, please)
  */
@@ -139,6 +226,9 @@ struct __res_state {
 #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_DEFAULT	(RES_RECURSE | RES_DEFNAMES | RES_DNSRCH)
 
@@ -146,8 +236,8 @@ struct __res_state {
  * Resolver "pfcode" values.  Used by dig.
  */
 #define RES_PRF_STATS	0x00000001
-/*			0x00000002	*/
-#define RES_PRF_CLASS   0x00000004
+#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
@@ -159,133 +249,158 @@ struct __res_state {
 #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) (struct sockaddr_in * const *ns,
-					   const u_char **query, int *querylen,
-					   u_char *ans, int anssiz,
-					   int *resplen);
+/* Things involving an internal (static) resolver context. */
+#if defined _REENTRANT || defined _LIBC_REENTRANT
+extern struct __res_state *__res_state(void);
+#define _res (*__res_state())
+#else
+extern struct __res_state _res;
+#endif
 
-typedef res_sendhookact (*res_send_rhook) (const struct sockaddr_in *ns,
-					   const u_char *query, int querylen,
-					   u_char *ans, int anssiz,
-					   int *resplen);
+#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_isourserver		__res_isourserver
+#define res_querydomain		__res_querydomain
+#define res_send		__res_send
 
-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" */
-};
+__BEGIN_DECLS
+void		fp_nquery __P((const u_char *, int, FILE *));
+void		fp_query __P((const u_char *, FILE *));
+const char *	hostalias __P((const char *));
+void		p_query __P((const u_char *));
+void		res_close __P((void));
+int		res_init __P((void));
+int		res_isourserver __P((const struct sockaddr_in *));
+int		res_mkquery __P((int, const char *, int, int, const u_char *,
+				 int, const u_char *, u_char *, int));
+int		res_query __P((const char *, int, int, u_char *, int));
+int		res_querydomain __P((const char *, const char *, int, int,
+				     u_char *, int));
+int		res_search __P((const char *, int, int, u_char *, int));
+int		res_send __P((const u_char *, int, u_char *, int));
+__END_DECLS
 
-extern struct __res_state _res;
+#if !defined(SHARED_LIBBIND) || defined(_LIBC)
+/*
+ * 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 */
 
-/* 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
-
-#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
-
+#define b64_ntop		__b64_ntop
+#define b64_pton		__b64_pton
+#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 putlong			__putlong
+#define putshort		__putshort
+#define res_dnok		__res_dnok
+#define res_findzonecut		__res_findzonecut
+#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 (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 *, char *, int *) __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 (u_char const *, size_t, char *, size_t) __THROW;
 int		b64_pton (char const *, u_char *, size_t) __THROW;
-int		loc_aton (const char *, u_char *) __THROW;
-const char *	loc_ntoa (const u_char *, char *) __THROW;
+int		loc_aton (const char *__ascii, u_char *__binary) __THROW;
+const char *	loc_ntoa (const u_char *__binary, char *__ascii) __THROW;
 int		dn_skipname (const u_char *, const u_char *) __THROW;
-void		fp_resstat (struct __res_state *, FILE *) __THROW;
-void		fp_query (const u_char *, FILE *) __THROW;
-void		fp_nquery (const u_char *, int, FILE *) __THROW;
-const char *	hostalias (const char *) __THROW;
 void		putlong (u_int32_t, u_char *) __THROW;
 void		putshort (u_int16_t, u_char *) __THROW;
 const char *	p_class (int) __THROW;
 const char *	p_time (u_int32_t) __THROW;
 const char *	p_type (int) __THROW;
-void		p_query (const u_char *) __THROW;
+const char *	p_rcode (int) __THROW;
 const u_char *	p_cdnname (const u_char *, const u_char *, int, FILE *)
      __THROW;
 const u_char *	p_cdname (const u_char *, const u_char *, FILE *) __THROW;
 const u_char *	p_fqnname (const u_char *cp, const u_char *msg,
 			   int, char *, int) __THROW;
 const u_char *	p_fqname (const u_char *, const u_char *, FILE *) __THROW;
-const u_char *	p_rr (const u_char *, const u_char *, FILE *) __THROW;
 const char *	p_option (u_long option) __THROW;
 char *		p_secstodate (u_long) __THROW;
-int		dn_count_labels (char *) __THROW;
+int		dn_count_labels (const char *) __THROW;
 int		dn_comp (const char *, u_char *, int,
 			     u_char **, u_char **) __THROW;
 int		dn_expand (const u_char *, const u_char *, const u_char *,
 			   char *, int) __THROW;
-int		res_init (void) __THROW;
 u_int		res_randomid (void) __THROW;
-int		res_query (const char *, int, int, u_char *, int) __THROW;
-int		res_search (const char *, int, int, u_char *, int) __THROW;
-int		res_querydomain (const char *, const char *, int, int,
-				 u_char *, int) __THROW;
-int		res_mkquery (int, const char *, int, int, const u_char *, int,
-			     const u_char *, u_char *, int) __THROW;
-int		res_send (const u_char *, int, u_char *, int) __THROW;
-int		res_isourserver (const struct sockaddr_in *) __THROW;
 int		res_nameinquery (const char *, int, int,
 				 const u_char *, const u_char *) __THROW;
 int		res_queriesmatch (const u_char *, const u_char *,
 				  const u_char *, const u_char *) __THROW;
-void		res_close (void) __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 u_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, u_char *, int) __THROW;
+int		res_nsearch (res_state, const char *, int,
+			     int, u_char *, int) __THROW;
+int		res_nquerydomain (res_state,
+				  const char *, const char *, int, int,
+				  u_char *, int) __THROW;
+int		res_nmkquery (res_state,
+			      int, const char *, int, int, const u_char *,
+			      int, const u_char *, u_char *, int) __THROW;
+int		res_nsend (res_state, const u_char *, int, u_char *, int) __THROW;
+void		res_nclose (res_state) __THROW;
 __END_DECLS
 
-#endif /* resolv.h */
+#endif /* !_RESOLV_H_ */