Update.

1999-02-06  Ulrich Drepper  <drepper@cygnus.com>

	* Versions.def: Add versions for ld.so.
	* csu/Versions: Remove __libc_stack_end here.
	* elf/Versions: Split libc definitions in libc and ld.so definitions.
	* elf/Makefile (ld-map): Change to ld.so.map.
	* scripts/versions.awk: Recognize dot in library names.

	* ctype/ctype.h: Remove definitions of __tolower and __toupper.
	Don't use __tolower and __toupper in inline functions.
	Add optimizing macros for tolower and toupper.
	* ctype/ctype-extn.c (_tolower): Don't use __tolower.
	(_toupper): Don't use __toupper.
	* ctype/ctype.c (tolower): Don't use __tolower.
	(toupper): Don't use toupper.

	* nscd/cache.c (prune_cache): Correct printing of debugging messages.

	* resolv/Versions (libresolv): Export __ns_name_unpack and
	__ns_name_ntop.
	* resolv/res_comp.c: Rename ns_name_unpack to __ns_name_unpack and
	make it global.  Change all users.  Similar for ns_name_ntop.
	* resolv/nss_dns/dns-host.c: Don't use dn_expand when extracting in
	user-provided buffer.  Use __ns_name_unpack and __ns_name_ntop
	directly to detect too small buffer.
	* stdio-common/Makefile (tests): Add scanf12.
	* stdio-common/scanf12.c: New file.
	* stdio-common/scanf12.input: New file.
	* stdio-common/vfscanf.c (__vfscanf): Handle +/- at beginning of
	floating-point correctly if the number is invalid.
	* stdio-common/vfscanf.c: Don't use non-reentrant multibyte conversion
	* stdio-common/printf_fphex.c: Likewise.
	* stdio-common/vfprintf.c: Likewise.
See ChangeLog.9 for earlier changes.

4 files changed, 121 insertions, 36 deletions

diff --git a/resolv/Versions b/resolv/Versions
index 112f55a19e..9bf6a39b6a 100644
--- a/resolv/Versions
+++ b/resolv/Versions
@@ -42,6 +42,10 @@ libresolv {
     __res_send;
     __sym_ntop; __sym_ntos; __sym_ston;
   }
+  GLIBC_2.1 {
+    # Needed in libnss_dns.
+    __ns_name_unpack; __ns_name_ntop;
+  }
 }
 
 libnss_dns {
diff --git a/resolv/nss_dns/dns-host.c b/resolv/nss_dns/dns-host.c
index 4d46384ca7..078d452fd6 100644
--- a/resolv/nss_dns/dns-host.c
+++ b/resolv/nss_dns/dns-host.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.
+/* Copyright (C) 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Extended from original form by Ulrich Drepper <drepper@cygnus.com>, 1996.
 
@@ -116,6 +116,12 @@ typedef union querybuf
   u_char buf[MAXPACKET];
 } querybuf;
 
+/* These functions are defined in res_comp.c.  */
+#define NS_MAXCDNAME	255	/* maximum compressed domain name */
+extern int __ns_name_ntop __P ((const u_char *, char *, size_t));
+extern int __ns_name_unpack __P ((const u_char *, const u_char *,
+				  const u_char *, u_char *, size_t));
+
 
 static enum nss_status getanswer_r (const querybuf *answer, int anslen,
 				    const char *qname, int qtype,
@@ -315,6 +321,7 @@ getanswer_r (const querybuf *answer, int anslen, const char *qname, int qtype,
   char tbuf[MAXDNAME];
   const char *tname;
   int (*name_ok) __P ((const char *));
+  u_char packtmp[NS_MAXCDNAME];
 
   tname = qname;
   result->h_name = NULL;
@@ -346,20 +353,27 @@ getanswer_r (const querybuf *answer, int anslen, const char *qname, int qtype,
       return NSS_STATUS_UNAVAIL;
     }
 
-  n = dn_expand (answer->buf, end_of_message, cp, bp, linebuflen);
-  if (n < 0 || (*name_ok) (bp) == 0)
+  n = __ns_name_unpack (answer->buf, end_of_message, cp,
+			packtmp, sizeof packtmp);
+  if (n != -1 && __ns_name_ntop (packtmp, bp, linebuflen) == -1)
     {
       if (errno == EMSGSIZE)
 	{
-	  /* There is not enough room in the input buffer.  */
 	  *errnop = ERANGE;
 	  *h_errnop = NETDB_INTERNAL;
+	  return NSS_STATUS_TRYAGAIN;
 	}
-      else
-	{
-	  *errnop = errno;
-	  *h_errnop = NO_RECOVERY;
-	}
+
+      n = -1;
+    }
+
+  if (n > 0 && bp[0] == '.')
+    bp[0] = '\0';
+
+  if (n < 0 || (*name_ok) (bp) == 0)
+    {
+      *errnop = errno;
+      *h_errnop = NO_RECOVERY;
       return NSS_STATUS_UNAVAIL;
     }
   cp += n + QFIXEDSZ;
@@ -396,7 +410,20 @@ getanswer_r (const querybuf *answer, int anslen, const char *qname, int qtype,
     {
       int type, class;
 
-      n = dn_expand (answer->buf, end_of_message, cp, bp, linebuflen);
+      n = __ns_name_unpack (answer->buf, end_of_message, cp,
+			    packtmp, sizeof packtmp);
+      if (n != -1 && __ns_name_ntop (packtmp, bp, linebuflen) == -1)
+	{
+	  if (errno == EMSGSIZE)
+	    {
+	      *errnop = ERANGE;
+	      *h_errnop = NETDB_INTERNAL;
+	      return NSS_STATUS_TRYAGAIN;
+	    }
+
+	  n = -1;
+	}
+
       if (n < 0 || (*name_ok) (bp) == 0)
 	{
 	  ++had_error;
@@ -405,9 +432,9 @@ getanswer_r (const querybuf *answer, int anslen, const char *qname, int qtype,
       cp += n;				/* name */
       type = _getshort (cp);
       cp += INT16SZ;			/* type */
-      class = _getshort(cp);
+      class = _getshort (cp);
       cp += INT16SZ + INT32SZ;		/* class, TTL */
-      n = _getshort(cp);
+      n = _getshort (cp);
       cp += INT16SZ;			/* len */
       if (class != C_IN)
 	{
@@ -444,8 +471,8 @@ getanswer_r (const querybuf *answer, int anslen, const char *qname, int qtype,
 	      ++had_error;
 	      continue;
 	    }
-	  result->h_name = strcpy (bp, tbuf);	/* Cannot overflow.  */
-	  bp += n;
+	  result->h_name = bp;
+	  bp = __mempcpy (bp, tbuf, n);	/* Cannot overflow.  */
 	  linebuflen -= n;
 	  continue;
 	}
@@ -466,8 +493,8 @@ getanswer_r (const querybuf *answer, int anslen, const char *qname, int qtype,
 	      ++had_error;
 	      continue;
 	    }
-	  tname = strcpy (bp, tbuf);	/* Cannot overflow.  */
-	  bp += n;
+	  tname = bp;
+	  bp = __mempcpy (bp, tbuf, n);	/* Cannot overflow.  */
 	  linebuflen -= n;
 	  continue;
 	}
@@ -493,13 +520,27 @@ getanswer_r (const querybuf *answer, int anslen, const char *qname, int qtype,
       switch (type)
 	{
 	case T_PTR:
-	  if (strcasecmp (tname, bp) != 0)
+	  if (__strcasecmp (tname, bp) != 0)
 	    {
 	      syslog (LOG_NOTICE | LOG_AUTH, AskedForGot, qname, bp);
 	      cp += n;
 	      continue;			/* XXX - had_error++ ? */
 	    }
-	  n = dn_expand (answer->buf, end_of_message, cp, bp, linebuflen);
+
+	  n = __ns_name_unpack (answer->buf, end_of_message, cp,
+				packtmp, sizeof packtmp);
+	  if (n != -1 && __ns_name_ntop (packtmp, bp, linebuflen) == -1)
+	    {
+	      if (errno == EMSGSIZE)
+		{
+		  *errnop = ERANGE;
+		  *h_errnop = NETDB_INTERNAL;
+		  return NSS_STATUS_TRYAGAIN;
+		}
+
+	      n = -1;
+	    }
+
 	  if (n < 0 || res_hnok (bp) == 0)
 	    {
 	      ++had_error;
@@ -577,8 +618,7 @@ getanswer_r (const querybuf *answer, int anslen, const char *qname, int qtype,
 	      cp += n;
 	      continue;
 	    }
-	  memcpy (*hap++ = bp, cp, n);
-	  bp += n;
+	  bp = __mempcpy (*hap++ = bp, cp, n);
 	  cp += n;
 	  linebuflen -= n;
 	  break;
@@ -606,10 +646,16 @@ getanswer_r (const querybuf *answer, int anslen, const char *qname, int qtype,
       if (result->h_name == NULL)
 	{
 	  n = strlen (qname) + 1;	/* For the \0.  */
-	  if (n > linebuflen || n >= MAXHOSTNAMELEN)
+	  if (n > linebuflen)
+	    {
+	      *errnop = ERANGE;
+	      *h_errnop = NETDB_INTERNAL;
+	      return NSS_STATUS_TRYAGAIN;
+	    }
+	  if (n >= MAXHOSTNAMELEN)
 	    goto no_recovery;
-	  result->h_name = strcpy (bp, qname);	/* Cannot overflow.  */
-	  bp += n;
+	  result->h_name = bp;
+	  bp = __mempcpy (bp, qname, n);	/* Cannot overflow.  */
 	  linebuflen -= n;
 	}
 
diff --git a/resolv/nss_dns/dns-network.c b/resolv/nss_dns/dns-network.c
index 6faeec33e4..c8fee78bbe 100644
--- a/resolv/nss_dns/dns-network.c
+++ b/resolv/nss_dns/dns-network.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.
+/* Copyright (C) 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Extended from original form by Ulrich Drepper <drepper@cygnus.com>, 1996.
 
@@ -95,6 +95,12 @@ typedef union querybuf
   u_char buf[MAXPACKET];
 } querybuf;
 
+/* These functions are defined in res_comp.c.  */
+#define NS_MAXCDNAME	255	/* maximum compressed domain name */
+extern int __ns_name_ntop __P ((const u_char *, char *, size_t));
+extern int __ns_name_unpack __P ((const u_char *, const u_char *,
+				  const u_char *, u_char *, size_t));
+
 
 /* Prototypes for local functions.  */
 static enum nss_status getanswer_r (const querybuf *answer, int anslen,
@@ -235,6 +241,7 @@ getanswer_r (const querybuf *answer, int anslen, struct netent *result,
   char **alias_pointer;
   int have_answer;
   char *ans;
+  u_char packtmp[NS_MAXCDNAME];
 
   if (question_count == 0)
     {
@@ -267,6 +274,22 @@ getanswer_r (const querybuf *answer, int anslen, struct netent *result,
       int n = dn_expand (answer->buf, end_of_message, cp, bp, linebuflen);
       int type, class;
 
+      n = __ns_name_unpack (answer->buf, end_of_message, cp,
+			    packtmp, sizeof packtmp);
+      if (n != -1 && __ns_name_ntop (packtmp, bp, linebuflen) == -1)
+	{
+	  if (errno == EMSGSIZE)
+	    {
+	      errno = ERANGE;
+	      return NSS_STATUS_TRYAGAIN;
+	    }
+
+	  n = -1;
+	}
+
+      if (n > 0 && bp[0] == '.')
+	bp[0] = '\0';
+
       if (n < 0 || res_dnok (bp) == 0)
 	break;
       cp += n;
@@ -278,7 +301,19 @@ getanswer_r (const querybuf *answer, int anslen, struct netent *result,
 
       if (class == C_IN && type == T_PTR)
 	{
-	  n = dn_expand (answer->buf, end_of_message, cp, bp, linebuflen);
+	  n = __ns_name_unpack (answer->buf, end_of_message, cp,
+				packtmp, sizeof packtmp);
+	  if (n != -1 && __ns_name_ntop (packtmp, bp, linebuflen) == -1)
+	    {
+	      if (errno == EMSGSIZE)
+		{
+		  errno = ERANGE;
+		  return NSS_STATUS_TRYAGAIN;
+		}
+
+	      n = -1;
+	    }
+
 	  if (n < 0 || !res_hnok (bp))
 	    {
 	      /* XXX What does this mean?  The original form from bind
diff --git a/resolv/res_comp.c b/resolv/res_comp.c
index 2661963632..bc3b245351 100644
--- a/resolv/res_comp.c
+++ b/resolv/res_comp.c
@@ -75,10 +75,10 @@ static char rcsid[] = "$Id$";
 # include "../conf/portability.h"
 #endif
 
-static int	ns_name_ntop __P((const u_char *, char *, size_t));
+extern int	__ns_name_ntop __P((const u_char *, char *, size_t));
 static int	ns_name_pton __P((const char *, u_char *, size_t));
-static int	ns_name_unpack __P((const u_char *, const u_char *,
-				    const u_char *, u_char *, size_t));
+extern int	__ns_name_unpack __P((const u_char *, const u_char *,
+				      const u_char *, u_char *, size_t));
 static int	ns_name_pack __P((const u_char *, u_char *, int,
 				  const u_char **, const u_char **));
 static int	ns_name_uncompress __P((const u_char *, const u_char *,
@@ -349,7 +349,7 @@ __putlong(l, msgp)
 
 /* Data. */
 
-static char		digits[] = "0123456789";
+static const char	digits[] = "0123456789";
 
 /* Forward. */
 
@@ -370,8 +370,8 @@ static int		dn_find(const u_char *, const u_char *,
  *	The root is returned as "."
  *	All other domains are returned in non absolute form
  */
-static int
-ns_name_ntop(src, dst, dstsiz)
+int
+__ns_name_ntop(src, dst, dstsiz)
 	const u_char *src;
 	char *dst;
 	size_t dstsiz;
@@ -388,7 +388,7 @@ ns_name_ntop(src, dst, dstsiz)
 	while ((n = *cp++) != 0) {
 		if ((n & NS_CMPRSFLGS) != 0) {
 			/* Some kind of compression pointer. */
-			__set_errno (EMSGSIZE);
+			__set_errno (EINVAL);
 			return (-1);
 		}
 		if (dn != dst) {
@@ -565,8 +565,8 @@ ns_name_pton(src, dst, dstsiz)
  * return:
  *	-1 if it fails, or consumed octets if it succeeds.
  */
-static int
-ns_name_unpack(msg, eom, src, dst, dstsiz)
+int
+__ns_name_unpack(msg, eom, src, dst, dstsiz)
 	const u_char *msg;
 	const u_char *eom;
 	const u_char *src;
@@ -767,9 +767,9 @@ ns_name_uncompress(msg, eom, src, dst, dstsiz)
 	u_char tmp[NS_MAXCDNAME];
 	int n;
 
-	if ((n = ns_name_unpack(msg, eom, src, tmp, sizeof tmp)) == -1)
+	if ((n = __ns_name_unpack(msg, eom, src, tmp, sizeof tmp)) == -1)
 		return (-1);
-	if (ns_name_ntop(tmp, dst, dstsiz) == -1)
+	if (__ns_name_ntop(tmp, dst, dstsiz) == -1)
 		return (-1);
 	return (n);
 }