Update the resolver in libc to BIND9's one.

Since, res_sendsigned(3) and the friends use MD5 functions, it is
hard to include them without having MD5 functions in libc.  So,
res_sendsigned(3) is not merged into libc.

Since, res_update(3) in BIND9 is not binary compatible with our
res_update(3), res_update(3) is leaved as is, except some
necessary modifications.
The res_update(3) and the friends are not essential part of the
resolver.  They are not defined in resolv.h but defined in
res_update.h separately in BIND9.  Further, they are not called from
our tree.  So, I hide them from our resolv.h, but leave them only
for binary backward compatibility (perhaps, no one calls them).

Since, struct __res_state_ext is not exposed in BIND9, I hide it
from our resolv.h.  And, global variable _res_ext is removed.  It
breaks binary backward compatibility.  But, since it is not used from
outside of our libc, I think it is safe.

Reviewed by:	arch@ (no objection)

1 files changed, 0 insertions, 113 deletions

diff --git a/lib/libc/net/nsap_addr.c b/lib/libc/net/nsap_addr.c
deleted file mode 100644
index 61b315f..0000000
--- a/lib/libc/net/nsap_addr.c
+++ /dev/null
@@ -1,113 +0,0 @@
-/*
- * Copyright (c) 1996, 1998 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.
- */
-
-#include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
-
-#include <sys/types.h>
-#include <sys/param.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-#include <arpa/nameser.h>
-#include <ctype.h>
-#include <resolv.h>
-
-static char
-xtob(c)
-	int c;
-{
-	return (c - (((c >= '0') && (c <= '9')) ? '0' : '7'));
-}
-
-u_int
-inet_nsap_addr(ascii, binary, maxlen)
-	const char *ascii;
-	u_char *binary;
-	int maxlen;
-{
-	u_char c, nib;
-	u_int len = 0;
-
-	while ((c = *ascii++) != '\0' && len < (u_int)maxlen) {
-		if (c == '.' || c == '+' || c == '/')
-			continue;
-		if (!isascii(c))
-			return (0);
-		if (islower(c))
-			c = toupper(c);
-		if (isxdigit(c)) {
-			nib = xtob(c);
-			c = *ascii++;
-			if (c != '\0') {
-				c = toupper(c);
-				if (isxdigit(c)) {
-					*binary++ = (nib << 4) | xtob(c);
-					len++;
-				} else
-					return (0);
-			}
-			else
-				return (0);
-		}
-		else
-			return (0);
-	}
-	return (len);
-}
-
-char *
-inet_nsap_ntoa(binlen, binary, ascii)
-	int binlen;
-	const u_char *binary;
-	char *ascii;
-{
-	int nib;
-	int i;
-	static char tmpbuf[255*3];
-	char *start;
-
-	if (ascii)
-		start = ascii;
-	else {
-		ascii = tmpbuf;
-		start = tmpbuf;
-	}
-
-	if (binlen > 255)
-		binlen = 255;
-
-	for (i = 0; i < binlen; i++) {
-		nib = *binary >> 4;
-		*ascii++ = nib + (nib < 10 ? '0' : '7');
-		nib = *binary++ & 0x0f;
-		*ascii++ = nib + (nib < 10 ? '0' : '7');
-		if (((i % 2) == 0 && (i + 1) < binlen))
-			*ascii++ = '.';
-	}
-	*ascii = '\0';
-	return (start);
-}
-
-/*
- * Weak aliases for applications that use certain private entry points,
- * and fail to include <arpa/inet.h>.
- */
-#undef inet_nsap_addr
-__weak_reference(__inet_nsap_addr, inet_nsap_addr);
-#undef inet_nsap_ntoa
-__weak_reference(__inet_nsap_ntoa, inet_nsap_ntoa);