Renamed the misleading libc/netbsd directory to libc/dns.

Bug: 13219633
Change-Id: Ide43add0b90b3081cc709a22d1ff1f59d65f1104

6 files changed, 0 insertions, 2528 deletions

diff --git a/libc/netbsd/nameser/ns_name.c b/libc/netbsd/nameser/ns_name.c
deleted file mode 100644
index 85d2f60..0000000
--- a/libc/netbsd/nameser/ns_name.c
+++ /dev/null
@@ -1,970 +0,0 @@
-/*	$NetBSD: ns_name.c,v 1.3 2004/11/07 02:19:49 christos Exp $	*/
-
-/*
- * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
- * 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.
- */
-
-#include <sys/cdefs.h>
-#ifndef lint
-#ifdef notdef
-static const char rcsid[] = "Id: ns_name.c,v 1.3.2.4.4.2 2004/05/04 03:27:47 marka Exp";
-#else
-__RCSID("$NetBSD: ns_name.c,v 1.3 2004/11/07 02:19:49 christos Exp $");
-#endif
-#endif
-
-#include <sys/types.h>
-
-#include <netinet/in.h>
-#include "arpa_nameser.h"
-
-#include <errno.h>
-#ifdef ANDROID_CHANGES
-#include "resolv_private.h"
-#else
-#include <resolv.h>
-#endif
-#include <string.h>
-#include <ctype.h>
-#include <stdlib.h>
-#include <limits.h>
-
-#ifdef SPRINTF_CHAR
-# define SPRINTF(x) strlen(sprintf/**/x)
-#else
-# define SPRINTF(x) ((size_t)sprintf x)
-#endif
-
-#define NS_TYPE_ELT			0x40 /* EDNS0 extended label type */
-#define DNS_LABELTYPE_BITSTRING		0x41
-
-/* Data. */
-
-static const char	digits[] = "0123456789";
-
-static const char digitvalue[256] = {
-	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,	/*16*/
-	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /*32*/
-	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /*48*/
-	 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, -1, -1, -1, -1, -1, -1, /*64*/
-	-1, 10, 11, 12, 13, 14, 15, -1, -1, -1, -1, -1, -1, -1, -1, -1, /*80*/
-	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /*96*/
-	-1, 10, 11, 12, 13, 14, 15, -1, -1, -1, -1, -1, -1, -1, -1, -1, /*112*/
-	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /*128*/
-	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /*256*/
-};
-
-/* Forward. */
-
-static int		special(int);
-static int		printable(int);
-static int		dn_find(const u_char *, const u_char *,
-				const u_char * const *,
-				const u_char * const *);
-static int		encode_bitsring(const char **, const char *,
-					unsigned char **, unsigned char **,
-					unsigned const char *);
-static int		labellen(const u_char *);
-static int		decode_bitstring(const unsigned char **,
-					 char *, const char *);
-
-/* Public. */
-
-/*
- * ns_name_ntop(src, dst, dstsiz)
- *	Convert an encoded domain name to printable ascii as per RFC1035.
- * return:
- *	Number of bytes written to buffer, or -1 (with errno set)
- * notes:
- *	The root is returned as "."
- *	All other domains are returned in non absolute form
- */
-int
-ns_name_ntop(const u_char *src, char *dst, size_t dstsiz)
-{
-	const u_char *cp;
-	char *dn, *eom;
-	u_char c;
-	u_int n;
-	int l;
-
-	cp = src;
-	dn = dst;
-	eom = dst + dstsiz;
-
-	while ((n = *cp++) != 0) {
-		if ((n & NS_CMPRSFLGS) == NS_CMPRSFLGS) {
-			/* Some kind of compression pointer. */
-			errno = EMSGSIZE;
-			return (-1);
-		}
-		if (dn != dst) {
-			if (dn >= eom) {
-				errno = EMSGSIZE;
-				return (-1);
-			}
-			*dn++ = '.';
-		}
-		if ((l = labellen(cp - 1)) < 0) {
-			errno = EMSGSIZE; /* XXX */
-			return(-1);
-		}
-		if (dn + l >= eom) {
-			errno = EMSGSIZE;
-			return (-1);
-		}
-		if ((n & NS_CMPRSFLGS) == NS_TYPE_ELT) {
-			int m;
-
-			if (n != DNS_LABELTYPE_BITSTRING) {
-				/* XXX: labellen should reject this case */
-				errno = EINVAL;
-				return(-1);
-			}
-			if ((m = decode_bitstring(&cp, dn, eom)) < 0)
-			{
-				errno = EMSGSIZE;
-				return(-1);
-			}
-			dn += m;
-			continue;
-		}
-		for (; l > 0; l--) {
-			c = *cp++;
-			if (special(c)) {
-				if (dn + 1 >= eom) {
-					errno = EMSGSIZE;
-					return (-1);
-				}
-				*dn++ = '\\';
-				*dn++ = (char)c;
-			} else if (!printable(c)) {
-				if (dn + 3 >= eom) {
-					errno = EMSGSIZE;
-					return (-1);
-				}
-				*dn++ = '\\';
-				*dn++ = digits[c / 100];
-				*dn++ = digits[(c % 100) / 10];
-				*dn++ = digits[c % 10];
-			} else {
-				if (dn >= eom) {
-					errno = EMSGSIZE;
-					return (-1);
-				}
-				*dn++ = (char)c;
-			}
-		}
-	}
-	if (dn == dst) {
-		if (dn >= eom) {
-			errno = EMSGSIZE;
-			return (-1);
-		}
-		*dn++ = '.';
-	}
-	if (dn >= eom) {
-		errno = EMSGSIZE;
-		return (-1);
-	}
-	*dn++ = '\0';
-	return (dn - dst);
-}
-
-/*
- * ns_name_pton(src, dst, dstsiz)
- *	Convert a ascii string into an encoded domain name as per RFC1035.
- * return:
- *	-1 if it fails
- *	1 if string was fully qualified
- *	0 is string was not fully qualified
- * notes:
- *	Enforces label and domain length limits.
- */
-
-int
-ns_name_pton(const char *src, u_char *dst, size_t dstsiz)
-{
-	u_char *label, *bp, *eom;
-	int c, n, escaped, e = 0;
-	char *cp;
-
-	escaped = 0;
-	bp = dst;
-	eom = dst + dstsiz;
-	label = bp++;
-
-	while ((c = *src++) != 0) {
-		if (escaped) {
-			if (c == '[') { /* start a bit string label */
-				if ((cp = strchr(src, ']')) == NULL) {
-					errno = EINVAL; /* ??? */
-					return(-1);
-				}
-				if ((e = encode_bitsring(&src, cp + 2,
-							 &label, &bp, eom))
-				    != 0) {
-					errno = e;
-					return(-1);
-				}
-				escaped = 0;
-				label = bp++;
-				if ((c = *src++) == 0)
-					goto done;
-				else if (c != '.') {
-					errno = EINVAL;
-					return(-1);
-				}
-				continue;
-			}
-			else if ((cp = strchr(digits, c)) != NULL) {
-				n = (cp - digits) * 100;
-				if ((c = *src++) == 0 ||
-				    (cp = strchr(digits, c)) == NULL) {
-					errno = EMSGSIZE;
-					return (-1);
-				}
-				n += (cp - digits) * 10;
-				if ((c = *src++) == 0 ||
-				    (cp = strchr(digits, c)) == NULL) {
-					errno = EMSGSIZE;
-					return (-1);
-				}
-				n += (cp - digits);
-				if (n > 255) {
-					errno = EMSGSIZE;
-					return (-1);
-				}
-				c = n;
-			}
-			escaped = 0;
-		} else if (c == '\\') {
-			escaped = 1;
-			continue;
-		} else if (c == '.') {
-			c = (bp - label - 1);
-			if ((c & NS_CMPRSFLGS) != 0) {	/* Label too big. */
-				errno = EMSGSIZE;
-				return (-1);
-			}
-			if (label >= eom) {
-				errno = EMSGSIZE;
-				return (-1);
-			}
-			*label = c;
-			/* Fully qualified ? */
-			if (*src == '\0') {
-				if (c != 0) {
-					if (bp >= eom) {
-						errno = EMSGSIZE;
-						return (-1);
-					}
-					*bp++ = '\0';
-				}
-				if ((bp - dst) > MAXCDNAME) {
-					errno = EMSGSIZE;
-					return (-1);
-				}
-				return (1);
-			}
-			if (c == 0 || *src == '.') {
-				errno = EMSGSIZE;
-				return (-1);
-			}
-			label = bp++;
-			continue;
-		}
-		if (bp >= eom) {
-			errno = EMSGSIZE;
-			return (-1);
-		}
-		*bp++ = (u_char)c;
-	}
-	c = (bp - label - 1);
-	if ((c & NS_CMPRSFLGS) != 0) {		/* Label too big. */
-		errno = EMSGSIZE;
-		return (-1);
-	}
-  done:
-	if (label >= eom) {
-		errno = EMSGSIZE;
-		return (-1);
-	}
-	*label = c;
-	if (c != 0) {
-		if (bp >= eom) {
-			errno = EMSGSIZE;
-			return (-1);
-		}
-		*bp++ = 0;
-	}
-	if ((bp - dst) > MAXCDNAME) {	/* src too big */
-		errno = EMSGSIZE;
-		return (-1);
-	}
-	return (0);
-}
-
-/*
- * ns_name_ntol(src, dst, dstsiz)
- *	Convert a network strings labels into all lowercase.
- * return:
- *	Number of bytes written to buffer, or -1 (with errno set)
- * notes:
- *	Enforces label and domain length limits.
- */
-
-int
-ns_name_ntol(const u_char *src, u_char *dst, size_t dstsiz)
-{
-	const u_char *cp;
-	u_char *dn, *eom;
-	u_char c;
-	u_int n;
-	int l;
-
-	cp = src;
-	dn = dst;
-	eom = dst + dstsiz;
-
-	if (dn >= eom) {
-		errno = EMSGSIZE;
-		return (-1);
-	}
-	while ((n = *cp++) != 0) {
-		if ((n & NS_CMPRSFLGS) == NS_CMPRSFLGS) {
-			/* Some kind of compression pointer. */
-			errno = EMSGSIZE;
-			return (-1);
-		}
-		*dn++ = n;
-		if ((l = labellen(cp - 1)) < 0) {
-			errno = EMSGSIZE;
-			return (-1);
-		}
-		if (dn + l >= eom) {
-			errno = EMSGSIZE;
-			return (-1);
-		}
-		for (; l > 0; l--) {
-			c = *cp++;
-			if (isupper(c))
-				*dn++ = tolower(c);
-			else
-				*dn++ = c;
-		}
-	}
-	*dn++ = '\0';
-	return (dn - dst);
-}
-
-/*
- * ns_name_unpack(msg, eom, src, dst, dstsiz)
- *	Unpack a domain name from a message, source may be compressed.
- * return:
- *	-1 if it fails, or consumed octets if it succeeds.
- */
-int
-ns_name_unpack(const u_char *msg, const u_char *eom, const u_char *src,
-	       u_char *dst, size_t dstsiz)
-{
-	const u_char *srcp, *dstlim;
-	u_char *dstp;
-	int n, len, checked, l;
-
-	len = -1;
-	checked = 0;
-	dstp = dst;
-	srcp = src;
-	dstlim = dst + dstsiz;
-	if (srcp < msg || srcp >= eom) {
-		errno = EMSGSIZE;
-		return (-1);
-	}
-	/* Fetch next label in domain name. */
-	while ((n = *srcp++) != 0) {
-		/* Check for indirection. */
-		switch (n & NS_CMPRSFLGS) {
-		case 0:
-		case NS_TYPE_ELT:
-			/* Limit checks. */
-			if ((l = labellen(srcp - 1)) < 0) {
-				errno = EMSGSIZE;
-				return(-1);
-			}
-			if (dstp + l + 1 >= dstlim || srcp + l >= eom) {
-				errno = EMSGSIZE;
-				return (-1);
-			}
-			checked += l + 1;
-			*dstp++ = n;
-			memcpy(dstp, srcp, (size_t)l);
-			dstp += l;
-			srcp += l;
-			break;
-
-		case NS_CMPRSFLGS:
-			if (srcp >= eom) {
-				errno = EMSGSIZE;
-				return (-1);
-			}
-			if (len < 0)
-				len = srcp - src + 1;
-			srcp = msg + (((n & 0x3f) << 8) | (*srcp & 0xff));
-			if (srcp < msg || srcp >= eom) {  /* Out of range. */
-				errno = EMSGSIZE;
-				return (-1);
-			}
-			checked += 2;
-			/*
-			 * Check for loops in the compressed name;
-			 * if we've looked at the whole message,
-			 * there must be a loop.
-			 */
-			if (checked >= eom - msg) {
-				errno = EMSGSIZE;
-				return (-1);
-			}
-			break;
-
-		default:
-			errno = EMSGSIZE;
-			return (-1);			/* flag error */
-		}
-	}
-	*dstp = '\0';
-	if (len < 0)
-		len = srcp - src;
-	return (len);
-}
-
-/*
- * ns_name_pack(src, dst, dstsiz, dnptrs, lastdnptr)
- *	Pack domain name 'domain' into 'comp_dn'.
- * return:
- *	Size of the compressed name, or -1.
- * notes:
- *	'dnptrs' is an array of pointers to previous compressed names.
- *	dnptrs[0] is a pointer to the beginning of the message. The array
- *	ends with NULL.
- *	'lastdnptr' is a pointer to the end of the array pointed to
- *	by 'dnptrs'.
- * Side effects:
- *	The list of pointers in dnptrs is updated for labels inserted into
- *	the message as we compress the name.  If 'dnptr' is NULL, we don't
- *	try to compress names. If 'lastdnptr' is NULL, we don't update the
- *	list.
- */
-int
-ns_name_pack(const u_char *src, u_char *dst, int dstsiz,
-	     const u_char **dnptrs, const u_char **lastdnptr)
-{
-	u_char *dstp;
-	const u_char **cpp, **lpp, *eob, *msg;
-	const u_char *srcp;
-	int n, l, first = 1;
-
-	srcp = src;
-	dstp = dst;
-	eob = dstp + dstsiz;
-	lpp = cpp = NULL;
-	if (dnptrs != NULL) {
-		if ((msg = *dnptrs++) != NULL) {
-			for (cpp = dnptrs; *cpp != NULL; cpp++)
-				;
-			lpp = cpp;	/* end of list to search */
-		}
-	} else
-		msg = NULL;
-
-	/* make sure the domain we are about to add is legal */
-	l = 0;
-	do {
-		int l0;
-
-		n = *srcp;
-		if ((n & NS_CMPRSFLGS) == NS_CMPRSFLGS) {
-			errno = EMSGSIZE;
-			return (-1);
-		}
-		if ((l0 = labellen(srcp)) < 0) {
-			errno = EINVAL;
-			return(-1);
-		}
-		l += l0 + 1;
-		if (l > MAXCDNAME) {
-			errno = EMSGSIZE;
-			return (-1);
-		}
-		srcp += l0 + 1;
-	} while (n != 0);
-
-	/* from here on we need to reset compression pointer array on error */
-	srcp = src;
-	do {
-		/* Look to see if we can use pointers. */
-		n = *srcp;
-		if (n != 0 && msg != NULL) {
-			l = dn_find(srcp, msg, (const u_char * const *)dnptrs,
-				    (const u_char * const *)lpp);
-			if (l >= 0) {
-				if (dstp + 1 >= eob) {
-					goto cleanup;
-				}
-				*dstp++ = ((u_int32_t)l >> 8) | NS_CMPRSFLGS;
-				*dstp++ = l % 256;
-				return (dstp - dst);
-			}
-			/* Not found, save it. */
-			if (lastdnptr != NULL && cpp < lastdnptr - 1 &&
-			    (dstp - msg) < 0x4000 && first) {
-				*cpp++ = dstp;
-				*cpp = NULL;
-				first = 0;
-			}
-		}
-		/* copy label to buffer */
-		if ((n & NS_CMPRSFLGS) == NS_CMPRSFLGS) {
-			/* Should not happen. */
-			goto cleanup;
-		}
-		n = labellen(srcp);
-		if (dstp + 1 + n >= eob) {
-			goto cleanup;
-		}
-		memcpy(dstp, srcp, (size_t)(n + 1));
-		srcp += n + 1;
-		dstp += n + 1;
-	} while (n != 0);
-
-	if (dstp > eob) {
-cleanup:
-		if (msg != NULL)
-			*lpp = NULL;
-		errno = EMSGSIZE;
-		return (-1);
-	}
-	return (dstp - dst);
-}
-
-/*
- * ns_name_uncompress(msg, eom, src, dst, dstsiz)
- *	Expand compressed domain name to presentation format.
- * return:
- *	Number of bytes read out of `src', or -1 (with errno set).
- * note:
- *	Root domain returns as "." not "".
- */
-int
-ns_name_uncompress(const u_char *msg, const u_char *eom, const u_char *src,
-		   char *dst, size_t dstsiz)
-{
-	u_char tmp[NS_MAXCDNAME];
-	int n;
-
-	if ((n = ns_name_unpack(msg, eom, src, tmp, sizeof tmp)) == -1)
-		return (-1);
-	if (ns_name_ntop(tmp, dst, dstsiz) == -1)
-		return (-1);
-	return (n);
-}
-
-/*
- * ns_name_compress(src, dst, dstsiz, dnptrs, lastdnptr)
- *	Compress a domain name into wire format, using compression pointers.
- * return:
- *	Number of bytes consumed in `dst' or -1 (with errno set).
- * notes:
- *	'dnptrs' is an array of pointers to previous compressed names.
- *	dnptrs[0] is a pointer to the beginning of the message.
- *	The list ends with NULL.  'lastdnptr' is a pointer to the end of the
- *	array pointed to by 'dnptrs'. Side effect is to update the list of
- *	pointers for labels inserted into the message as we compress the name.
- *	If 'dnptr' is NULL, we don't try to compress names. If 'lastdnptr'
- *	is NULL, we don't update the list.
- */
-int
-ns_name_compress(const char *src, u_char *dst, size_t dstsiz,
-		 const u_char **dnptrs, const u_char **lastdnptr)
-{
-	u_char tmp[NS_MAXCDNAME];
-
-	if (ns_name_pton(src, tmp, sizeof tmp) == -1)
-		return (-1);
-	return (ns_name_pack(tmp, dst, (int)dstsiz, dnptrs, lastdnptr));
-}
-
-/*
- * Reset dnptrs so that there are no active references to pointers at or
- * after src.
- */
-void
-ns_name_rollback(const u_char *src, const u_char **dnptrs,
-		 const u_char **lastdnptr)
-{
-	while (dnptrs < lastdnptr && *dnptrs != NULL) {
-		if (*dnptrs >= src) {
-			*dnptrs = NULL;
-			break;
-		}
-		dnptrs++;
-	}
-}
-
-/*
- * ns_name_skip(ptrptr, eom)
- *	Advance *ptrptr to skip over the compressed name it points at.
- * return:
- *	0 on success, -1 (with errno set) on failure.
- */
-int
-ns_name_skip(const u_char **ptrptr, const u_char *eom)
-{
-	const u_char *cp;
-	u_int n;
-	int l;
-
-	cp = *ptrptr;
-	while (cp < eom && (n = *cp++) != 0) {
-		/* Check for indirection. */
-		switch (n & NS_CMPRSFLGS) {
-		case 0:			/* normal case, n == len */
-			cp += n;
-			continue;
-		case NS_TYPE_ELT: /* EDNS0 extended label */
-			if ((l = labellen(cp - 1)) < 0) {
-				errno = EMSGSIZE; /* XXX */
-				return(-1);
-			}
-			cp += l;
-			continue;
-		case NS_CMPRSFLGS:	/* indirection */
-			cp++;
-			break;
-		default:		/* illegal type */
-			errno = EMSGSIZE;
-			return (-1);
-		}
-		break;
-	}
-	if (cp > eom) {
-		errno = EMSGSIZE;
-		return (-1);
-	}
-	*ptrptr = cp;
-	return (0);
-}
-
-/* Private. */
-
-/*
- * special(ch)
- *	Thinking in noninternationalized USASCII (per the DNS spec),
- *	is this characted special ("in need of quoting") ?
- * return:
- *	boolean.
- */
-static int
-special(int ch) {
-	switch (ch) {
-	case 0x22: /* '"' */
-	case 0x2E: /* '.' */
-	case 0x3B: /* ';' */
-	case 0x5C: /* '\\' */
-	case 0x28: /* '(' */
-	case 0x29: /* ')' */
-	/* Special modifiers in zone files. */
-	case 0x40: /* '@' */
-	case 0x24: /* '$' */
-		return (1);
-	default:
-		return (0);
-	}
-}
-
-/*
- * printable(ch)
- *	Thinking in noninternationalized USASCII (per the DNS spec),
- *	is this character visible and not a space when printed ?
- * return:
- *	boolean.
- */
-static int
-printable(int ch) {
-	return (ch > 0x20 && ch < 0x7f);
-}
-
-/*
- *	Thinking in noninternationalized USASCII (per the DNS spec),
- *	convert this character to lower case if it's upper case.
- */
-static int
-mklower(int ch) {
-	if (ch >= 0x41 && ch <= 0x5A)
-		return (ch + 0x20);
-	return (ch);
-}
-
-/*
- * dn_find(domain, msg, dnptrs, lastdnptr)
- *	Search for the counted-label name in an array of compressed names.
- * return:
- *	offset from msg if found, or -1.
- * notes:
- *	dnptrs is the pointer to the first name on the list,
- *	not the pointer to the start of the message.
- */
-static int
-dn_find(const u_char *domain, const u_char *msg,
-	const u_char * const *dnptrs,
-	const u_char * const *lastdnptr)
-{
-	const u_char *dn, *cp, *sp;
-	const u_char * const *cpp;
-	u_int n;
-
-	for (cpp = dnptrs; cpp < lastdnptr; cpp++) {
-		sp = *cpp;
-		/*
-		 * terminate search on:
-		 * root label
-		 * compression pointer
-		 * unusable offset
-		 */
-		while (*sp != 0 && (*sp & NS_CMPRSFLGS) == 0 &&
-		       (sp - msg) < 0x4000) {
-			dn = domain;
-			cp = sp;
-			while ((n = *cp++) != 0) {
-				/*
-				 * check for indirection
-				 */
-				switch (n & NS_CMPRSFLGS) {
-				case 0:		/* normal case, n == len */
-					n = labellen(cp - 1); /* XXX */
-
-					if (n != *dn++)
-						goto next;
-
-					for (; n > 0; n--)
-						if (mklower(*dn++) !=
-						    mklower(*cp++))
-							goto next;
-					/* Is next root for both ? */
-					if (*dn == '\0' && *cp == '\0')
-						return (sp - msg);
-					if (*dn)
-						continue;
-					goto next;
-				case NS_CMPRSFLGS:	/* indirection */
-					cp = msg + (((n & 0x3f) << 8) | *cp);
-					break;
-
-				default:	/* illegal type */
-					errno = EMSGSIZE;
-					return (-1);
-				}
-			}
- next: ;
-			sp += *sp + 1;
-		}
-	}
-	errno = ENOENT;
-	return (-1);
-}
-
-static int
-decode_bitstring(const unsigned char **cpp, char *dn, const char *eom)
-{
-	const unsigned char *cp = *cpp;
-	char *beg = dn, tc;
-	int b, blen, plen, i;
-
-	if ((blen = (*cp & 0xff)) == 0)
-		blen = 256;
-	plen = (blen + 3) / 4;
-	plen += sizeof("\\[x/]") + (blen > 99 ? 3 : (blen > 9) ? 2 : 1);
-	if (dn + plen >= eom)
-		return(-1);
-
-	cp++;
-	i = SPRINTF((dn, "\\[x"));
-	if (i < 0)
-		return (-1);
-	dn += i;
-	for (b = blen; b > 7; b -= 8, cp++) {
-		i = SPRINTF((dn, "%02x", *cp & 0xff));
-		if (i < 0)
-			return (-1);
-		dn += i;
-	}
-	if (b > 4) {
-		tc = *cp++;
-		i = SPRINTF((dn, "%02x", tc & (0xff << (8 - b))));
-		if (i < 0)
-			return (-1);
-		dn += i;
-	} else if (b > 0) {
-		tc = *cp++;
-		i = SPRINTF((dn, "%1x",
-			       (((u_int32_t)tc >> 4) & 0x0f) & (0x0f << (4 - b))));
-		if (i < 0)
-			return (-1);
-		dn += i;
-	}
-	i = SPRINTF((dn, "/%d]", blen));
-	if (i < 0)
-		return (-1);
-	dn += i;
-
-	*cpp = cp;
-	return(dn - beg);
-}
-
-static int
-encode_bitsring(const char **bp, const char *end, unsigned char **labelp,
-	        unsigned char ** dst, unsigned const char *eom)
-{
-	int afterslash = 0;
-	const char *cp = *bp;
-	unsigned char *tp;
-	char c;
-	const char *beg_blen;
-	char *end_blen = NULL;
-	int value = 0, count = 0, tbcount = 0, blen = 0;
-
-	beg_blen = end_blen = NULL;
-
-	/* a bitstring must contain at least 2 characters */
-	if (end - cp < 2)
-		return(EINVAL);
-
-	/* XXX: currently, only hex strings are supported */
-	if (*cp++ != 'x')
-		return(EINVAL);
-	if (!isxdigit((*cp) & 0xff)) /* reject '\[x/BLEN]' */
-		return(EINVAL);
-
-	for (tp = *dst + 1; cp < end && tp < eom; cp++) {
-		switch((c = *cp)) {
-		case ']':	/* end of the bitstring */
-			if (afterslash) {
-				if (beg_blen == NULL)
-					return(EINVAL);
-				blen = (int)strtol(beg_blen, &end_blen, 10);
-				if (*end_blen != ']')
-					return(EINVAL);
-			}
-			if (count)
-				*tp++ = ((value << 4) & 0xff);
-			cp++;	/* skip ']' */
-			goto done;
-		case '/':
-			afterslash = 1;
-			break;
-		default:
-			if (afterslash) {
-				if (!isdigit(c&0xff))
-					return(EINVAL);
-				if (beg_blen == NULL) {
-
-					if (c == '0') {
-						/* blen never begings with 0 */
-						return(EINVAL);
-					}
-					beg_blen = cp;
-				}
-			} else {
-				if (!isxdigit(c&0xff))
-					return(EINVAL);
-				value <<= 4;
-				value += digitvalue[(int)c];
-				count += 4;
-				tbcount += 4;
-				if (tbcount > 256)
-					return(EINVAL);
-				if (count == 8) {
-					*tp++ = value;
-					count = 0;
-				}
-			}
-			break;
-		}
-	}
-  done:
-	if (cp >= end || tp >= eom)
-		return(EMSGSIZE);
-
-	/*
-	 * bit length validation:
-	 * If a <length> is present, the number of digits in the <bit-data>
-	 * MUST be just sufficient to contain the number of bits specified
-	 * by the <length>. If there are insignificant bits in a final
-	 * hexadecimal or octal digit, they MUST be zero.
-	 * RFC 2673, Section 3.2.
-	 */
-	if (blen > 0) {
-		int traillen;
-
-		if (((blen + 3) & ~3) != tbcount)
-			return(EINVAL);
-		traillen = tbcount - blen; /* between 0 and 3 */
-		if (((value << (8 - traillen)) & 0xff) != 0)
-			return(EINVAL);
-	}
-	else
-		blen = tbcount;
-	if (blen == 256)
-		blen = 0;
-
-	/* encode the type and the significant bit fields */
-	**labelp = DNS_LABELTYPE_BITSTRING;
-	**dst = blen;
-
-	*bp = cp;
-	*dst = tp;
-
-	return(0);
-}
-
-static int
-labellen(const u_char *lp)
-{
-	int bitlen;
-	u_char l = *lp;
-
-	if ((l & NS_CMPRSFLGS) == NS_CMPRSFLGS) {
-		/* should be avoided by the caller */
-		return(-1);
-	}
-
-	if ((l & NS_CMPRSFLGS) == NS_TYPE_ELT) {
-		if (l == DNS_LABELTYPE_BITSTRING) {
-			if ((bitlen = *(lp + 1)) == 0)
-				bitlen = 256;
-			return((bitlen + 7 ) / 8 + 1);
-		}
-		return(-1);	/* unknwon ELT */
-	}
-	return(l);
-}
diff --git a/libc/netbsd/nameser/ns_netint.c b/libc/netbsd/nameser/ns_netint.c
deleted file mode 100644
index 1b2964f..0000000
--- a/libc/netbsd/nameser/ns_netint.c
+++ /dev/null
@@ -1,59 +0,0 @@
-/*	$NetBSD: ns_netint.c,v 1.2 2004/05/20 20:19:00 christos Exp $	*/
-
-/*
- * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
- * 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.
- */
-
-#include <sys/cdefs.h>
-#ifndef lint
-#ifdef notdef
-static const char rcsid[] = "Id: ns_netint.c,v 1.1.206.1 2004/03/09 08:33:44 marka Exp";
-#else
-__RCSID("$NetBSD: ns_netint.c,v 1.2 2004/05/20 20:19:00 christos Exp $");
-#endif
-#endif
-
-/* Import. */
-
-#include "arpa_nameser.h"
-
-/* Public. */
-
-u_int16_t
-ns_get16(const u_char *src) {
-	u_int dst;
-
-	NS_GET16(dst, src);
-	return (dst);
-}
-
-u_int32_t
-ns_get32(const u_char *src) {
-	u_long dst;
-
-	NS_GET32(dst, src);
-	return (dst);
-}
-
-void
-ns_put16(u_int16_t src, u_char *dst) {
-	NS_PUT16(src, dst);
-}
-
-void
-ns_put32(u_int32_t src, u_char *dst) {
-	NS_PUT32(src, dst);
-}
diff --git a/libc/netbsd/nameser/ns_parse.c b/libc/netbsd/nameser/ns_parse.c
deleted file mode 100644
index fd94860..0000000
--- a/libc/netbsd/nameser/ns_parse.c
+++ /dev/null
@@ -1,209 +0,0 @@
-/*	$NetBSD: ns_parse.c,v 1.2 2004/05/20 20:35:05 christos Exp $	*/
-
-/*
- * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
- * 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.
- */
-
-#include <sys/cdefs.h>
-#ifndef lint
-#ifdef notdef
-static const char rcsid[] = "Id: ns_parse.c,v 1.3.2.1.4.1 2004/03/09 08:33:44 marka Exp";
-#else
-__RCSID("$NetBSD: ns_parse.c,v 1.2 2004/05/20 20:35:05 christos Exp $");
-#endif
-#endif
-
-/* Import. */
-
-#include <sys/types.h>
-
-#include <netinet/in.h>
-#include "arpa_nameser.h"
-
-#include <errno.h>
-#ifdef ANDROID_CHANGES
-#include "resolv_private.h"
-#else
-#include <resolv.h>
-#endif
-#include <string.h>
-
-/* Forward. */
-
-static void	setsection(ns_msg *msg, ns_sect sect);
-
-/* Macros. */
-
-#define RETERR(err) do { errno = (err); return (-1); } while (/*NOTREACHED*//*CONSTCOND*/0)
-
-/* Public. */
-
-/* These need to be in the same order as the nres.h:ns_flag enum. */
-const struct _ns_flagdata _ns_flagdata[16] = {
-	{ 0x8000, 15 },		/* qr. */
-	{ 0x7800, 11 },		/* opcode. */
-	{ 0x0400, 10 },		/* aa. */
-	{ 0x0200, 9 },		/* tc. */
-	{ 0x0100, 8 },		/* rd. */
-	{ 0x0080, 7 },		/* ra. */
-	{ 0x0040, 6 },		/* z. */
-	{ 0x0020, 5 },		/* ad. */
-	{ 0x0010, 4 },		/* cd. */
-	{ 0x000f, 0 },		/* rcode. */
-	{ 0x0000, 0 },		/* expansion (1/6). */
-	{ 0x0000, 0 },		/* expansion (2/6). */
-	{ 0x0000, 0 },		/* expansion (3/6). */
-	{ 0x0000, 0 },		/* expansion (4/6). */
-	{ 0x0000, 0 },		/* expansion (5/6). */
-	{ 0x0000, 0 },		/* expansion (6/6). */
-};
-
-int ns_msg_getflag(ns_msg handle, int flag) {
-	return((u_int32_t)((handle)._flags & _ns_flagdata[flag].mask) >> _ns_flagdata[flag].shift);
-}
-
-int
-ns_skiprr(const u_char *ptr, const u_char *eom, ns_sect section, int count) {
-	const u_char *optr = ptr;
-
-	for (; count > 0; count--) {
-		int b, rdlength;
-
-		b = dn_skipname(ptr, eom);
-		if (b < 0)
-			RETERR(EMSGSIZE);
-		ptr += b/*Name*/ + NS_INT16SZ/*Type*/ + NS_INT16SZ/*Class*/;
-		if (section != ns_s_qd) {
-			if (ptr + NS_INT32SZ + NS_INT16SZ > eom)
-				RETERR(EMSGSIZE);
-			ptr += NS_INT32SZ/*TTL*/;
-			NS_GET16(rdlength, ptr);
-			ptr += rdlength/*RData*/;
-		}
-	}
-	if (ptr > eom)
-		RETERR(EMSGSIZE);
-	return (ptr - optr);
-}
-
-int
-ns_initparse(const u_char *msg, int msglen, ns_msg *handle) {
-	const u_char *eom = msg + msglen;
-	int i;
-
-	memset(handle, 0x5e, sizeof *handle);
-	handle->_msg = msg;
-	handle->_eom = eom;
-	if (msg + NS_INT16SZ > eom)
-		RETERR(EMSGSIZE);
-	NS_GET16(handle->_id, msg);
-	if (msg + NS_INT16SZ > eom)
-		RETERR(EMSGSIZE);
-	NS_GET16(handle->_flags, msg);
-	for (i = 0; i < ns_s_max; i++) {
-		if (msg + NS_INT16SZ > eom)
-			RETERR(EMSGSIZE);
-		NS_GET16(handle->_counts[i], msg);
-	}
-	for (i = 0; i < ns_s_max; i++)
-		if (handle->_counts[i] == 0)
-			handle->_sections[i] = NULL;
-		else {
-			int b = ns_skiprr(msg, eom, (ns_sect)i,
-					  handle->_counts[i]);
-
-			if (b < 0)
-				return (-1);
-			handle->_sections[i] = msg;
-			msg += b;
-		}
-	if (msg != eom)
-		RETERR(EMSGSIZE);
-	setsection(handle, ns_s_max);
-	return (0);
-}
-
-int
-ns_parserr(ns_msg *handle, ns_sect section, int rrnum, ns_rr *rr) {
-	int b;
-
-	/* Make section right. */
-	if ((unsigned)section >= (unsigned)ns_s_max)
-		RETERR(ENODEV);
-	if (section != handle->_sect)
-		setsection(handle, section);
-
-	/* Make rrnum right. */
-	if (rrnum == -1)
-		rrnum = handle->_rrnum;
-	if (rrnum < 0 || rrnum >= handle->_counts[(int)section])
-		RETERR(ENODEV);
-	if (rrnum < handle->_rrnum)
-		setsection(handle, section);
-	if (rrnum > handle->_rrnum) {
-		b = ns_skiprr(handle->_msg_ptr, handle->_eom, section,
-			      rrnum - handle->_rrnum);
-
-		if (b < 0)
-			return (-1);
-		handle->_msg_ptr += b;
-		handle->_rrnum = rrnum;
-	}
-
-	/* Do the parse. */
-	b = dn_expand(handle->_msg, handle->_eom,
-		      handle->_msg_ptr, rr->name, NS_MAXDNAME);
-	if (b < 0)
-		return (-1);
-	handle->_msg_ptr += b;
-	if (handle->_msg_ptr + NS_INT16SZ + NS_INT16SZ > handle->_eom)
-		RETERR(EMSGSIZE);
-	NS_GET16(rr->type, handle->_msg_ptr);
-	NS_GET16(rr->rr_class, handle->_msg_ptr);
-	if (section == ns_s_qd) {
-		rr->ttl = 0;
-		rr->rdlength = 0;
-		rr->rdata = NULL;
-	} else {
-		if (handle->_msg_ptr + NS_INT32SZ + NS_INT16SZ > handle->_eom)
-			RETERR(EMSGSIZE);
-		NS_GET32(rr->ttl, handle->_msg_ptr);
-		NS_GET16(rr->rdlength, handle->_msg_ptr);
-		if (handle->_msg_ptr + rr->rdlength > handle->_eom)
-			RETERR(EMSGSIZE);
-		rr->rdata = handle->_msg_ptr;
-		handle->_msg_ptr += rr->rdlength;
-	}
-	if (++handle->_rrnum > handle->_counts[(int)section])
-		setsection(handle, (ns_sect)((int)section + 1));
-
-	/* All done. */
-	return (0);
-}
-
-/* Private. */
-
-static void
-setsection(ns_msg *msg, ns_sect sect) {
-	msg->_sect = sect;
-	if (sect == ns_s_max) {
-		msg->_rrnum = -1;
-		msg->_msg_ptr = NULL;
-	} else {
-		msg->_rrnum = 0;
-		msg->_msg_ptr = msg->_sections[(int)sect];
-	}
-}
diff --git a/libc/netbsd/nameser/ns_print.c b/libc/netbsd/nameser/ns_print.c
deleted file mode 100644
index 7465e62..0000000
--- a/libc/netbsd/nameser/ns_print.c
+++ /dev/null
@@ -1,915 +0,0 @@
-/*	$NetBSD: ns_print.c,v 1.5 2004/11/07 02:19:49 christos Exp $	*/
-
-/*
- * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
- * 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.
- */
-
-#include <sys/cdefs.h>
-#ifndef lint
-#ifdef notdef
-static const char rcsid[] = "Id: ns_print.c,v 1.3.2.1.4.5 2004/07/28 20:16:45 marka Exp";
-#else
-__RCSID("$NetBSD: ns_print.c,v 1.5 2004/11/07 02:19:49 christos Exp $");
-#endif
-#endif
-
-/* Import. */
-
-#include <sys/types.h>
-#include <sys/socket.h>
-
-#include <netinet/in.h>
-#include "arpa_nameser.h"
-#include <arpa/inet.h>
-
-#include <isc/assertions.h>
-#include <isc/dst.h>
-#include <errno.h>
-#ifdef ANDROID_CHANGES
-#include "resolv_private.h"
-#else
-#include <resolv.h>
-#endif
-#include <string.h>
-#include <ctype.h>
-#include <assert.h>
-
-#ifdef SPRINTF_CHAR
-# define SPRINTF(x) strlen(sprintf/**/x)
-#else
-# define SPRINTF(x) ((size_t)sprintf x)
-#endif
-
-#ifndef MIN
-#define	MIN(x,y)	((x)<(y)?(x):(y))
-#endif
-
-/* Forward. */
-
-static size_t	prune_origin(const char *name, const char *origin);
-static int	charstr(const u_char *rdata, const u_char *edata,
-			char **buf, size_t *buflen);
-static int	addname(const u_char *msg, size_t msglen,
-			const u_char **p, const char *origin,
-			char **buf, size_t *buflen);
-static void	addlen(size_t len, char **buf, size_t *buflen);
-static int	addstr(const char *src, size_t len,
-		       char **buf, size_t *buflen);
-static int	addtab(size_t len, size_t target, int spaced,
-		       char **buf, size_t *buflen);
-
-/* Macros. */
-
-#define	T(x) \
-	do { \
-		if ((x) < 0) \
-			return (-1); \
-	} while (/*CONSTCOND*/0)
-
-/* Public. */
-
-/*
- * int
- * ns_sprintrr(handle, rr, name_ctx, origin, buf, buflen)
- *	Convert an RR to presentation format.
- * return:
- *	Number of characters written to buf, or -1 (check errno).
- */
-int
-ns_sprintrr(const ns_msg *handle, const ns_rr *rr,
-	    const char *name_ctx, const char *origin,
-	    char *buf, size_t buflen)
-{
-	int n;
-
-	n = ns_sprintrrf(ns_msg_base(*handle), ns_msg_size(*handle),
-			 ns_rr_name(*rr), ns_rr_class(*rr), ns_rr_type(*rr),
-			 ns_rr_ttl(*rr), ns_rr_rdata(*rr), ns_rr_rdlen(*rr),
-			 name_ctx, origin, buf, buflen);
-	return (n);
-}
-
-/*
- * int
- * ns_sprintrrf(msg, msglen, name, class, type, ttl, rdata, rdlen,
- *	       name_ctx, origin, buf, buflen)
- *	Convert the fields of an RR into presentation format.
- * return:
- *	Number of characters written to buf, or -1 (check errno).
- */
-int
-ns_sprintrrf(const u_char *msg, size_t msglen,
-	    const char *name, ns_class class, ns_type type,
-	    u_long ttl, const u_char *rdata, size_t rdlen,
-	    const char *name_ctx, const char *origin,
-	    char *buf, size_t buflen)
-{
-	const char *obuf = buf;
-	const u_char *edata = rdata + rdlen;
-	int spaced = 0;
-
-	const char *comment;
-	char tmp[100];
-	int len, x;
-
-	/*
-	 * Owner.
-	 */
-	if (name_ctx != NULL && ns_samename(name_ctx, name) == 1) {
-		T(addstr("\t\t\t", (size_t)3, &buf, &buflen));
-	} else {
-		len = prune_origin(name, origin);
-		if (*name == '\0') {
-			goto root;
-		} else if (len == 0) {
-			T(addstr("@\t\t\t", (size_t)4, &buf, &buflen));
-		} else {
-			T(addstr(name, (size_t)len, &buf, &buflen));
-			/* Origin not used or not root, and no trailing dot? */
-			if (((origin == NULL || origin[0] == '\0') ||
-			    (origin[0] != '.' && origin[1] != '\0' &&
-			    name[len] == '\0')) && name[len - 1] != '.') {
- root:
-				T(addstr(".", (size_t)1, &buf, &buflen));
-				len++;
-			}
-			T(spaced = addtab((size_t)len, 24, spaced, &buf, &buflen));
-		}
-	}
-
-	/*
-	 * TTL, Class, Type.
-	 */
-	T(x = ns_format_ttl(ttl, buf, buflen));
-	addlen((size_t)x, &buf, &buflen);
-	len = SPRINTF((tmp, " %s %s", p_class(class), p_type(type)));
-	T(addstr(tmp, (size_t)len, &buf, &buflen));
-	T(spaced = addtab((size_t)(x + len), (size_t)16, spaced, &buf, &buflen));
-
-	/*
-	 * RData.
-	 */
-	switch (type) {
-	case ns_t_a:
-		if (rdlen != (size_t)NS_INADDRSZ)
-			goto formerr;
-		(void) inet_ntop(AF_INET, rdata, buf, buflen);
-		addlen(strlen(buf), &buf, &buflen);
-		break;
-
-	case ns_t_cname:
-	case ns_t_mb:
-	case ns_t_mg:
-	case ns_t_mr:
-	case ns_t_ns:
-	case ns_t_ptr:
-	case ns_t_dname:
-		T(addname(msg, msglen, &rdata, origin, &buf, &buflen));
-		break;
-
-	case ns_t_hinfo:
-	case ns_t_isdn:
-		/* First word. */
-		T(len = charstr(rdata, edata, &buf, &buflen));
-		if (len == 0)
-			goto formerr;
-		rdata += len;
-		T(addstr(" ", (size_t)1, &buf, &buflen));
-
-
-		/* Second word, optional in ISDN records. */
-		if (type == ns_t_isdn && rdata == edata)
-			break;
-
-		T(len = charstr(rdata, edata, &buf, &buflen));
-		if (len == 0)
-			goto formerr;
-		rdata += len;
-		break;
-
-	case ns_t_soa: {
-		u_long t;
-
-		/* Server name. */
-		T(addname(msg, msglen, &rdata, origin, &buf, &buflen));
-		T(addstr(" ", (size_t)1, &buf, &buflen));
-
-		/* Administrator name. */
-		T(addname(msg, msglen, &rdata, origin, &buf, &buflen));
-		T(addstr(" (\n", (size_t)3, &buf, &buflen));
-		spaced = 0;
-
-		if ((edata - rdata) != 5*NS_INT32SZ)
-			goto formerr;
-
-		/* Serial number. */
-		t = ns_get32(rdata);  rdata += NS_INT32SZ;
-		T(addstr("\t\t\t\t\t", (size_t)5, &buf, &buflen));
-		len = SPRINTF((tmp, "%lu", t));
-		T(addstr(tmp, (size_t)len, &buf, &buflen));
-		T(spaced = addtab((size_t)len, (size_t)16, spaced, &buf, &buflen));
-		T(addstr("; serial\n", (size_t)9, &buf, &buflen));
-		spaced = 0;
-
-		/* Refresh interval. */
-		t = ns_get32(rdata);  rdata += NS_INT32SZ;
-		T(addstr("\t\t\t\t\t", (size_t)5, &buf, &buflen));
-		T(len = ns_format_ttl(t, buf, buflen));
-		addlen((size_t)len, &buf, &buflen);
-		T(spaced = addtab((size_t)len, (size_t)16, spaced, &buf, &buflen));
-		T(addstr("; refresh\n", (size_t)10, &buf, &buflen));
-		spaced = 0;
-
-		/* Retry interval. */
-		t = ns_get32(rdata);  rdata += NS_INT32SZ;
-		T(addstr("\t\t\t\t\t", (size_t)5, &buf, &buflen));
-		T(len = ns_format_ttl(t, buf, buflen));
-		addlen((size_t)len, &buf, &buflen);
-		T(spaced = addtab((size_t)len, (size_t)16, spaced, &buf, &buflen));
-		T(addstr("; retry\n", (size_t)8, &buf, &buflen));
-		spaced = 0;
-
-		/* Expiry. */
-		t = ns_get32(rdata);  rdata += NS_INT32SZ;
-		T(addstr("\t\t\t\t\t", (size_t)5, &buf, &buflen));
-		T(len = ns_format_ttl(t, buf, buflen));
-		addlen((size_t)len, &buf, &buflen);
-		T(spaced = addtab((size_t)len, (size_t)16, spaced, &buf, &buflen));
-		T(addstr("; expiry\n", (size_t)9, &buf, &buflen));
-		spaced = 0;
-
-		/* Minimum TTL. */
-		t = ns_get32(rdata);  rdata += NS_INT32SZ;
-		T(addstr("\t\t\t\t\t", (size_t)5, &buf, &buflen));
-		T(len = ns_format_ttl(t, buf, buflen));
-		addlen((size_t)len, &buf, &buflen);
-		T(addstr(" )", (size_t)2, &buf, &buflen));
-		T(spaced = addtab((size_t)len, (size_t)16, spaced, &buf, &buflen));
-		T(addstr("; minimum\n", (size_t)10, &buf, &buflen));
-
-		break;
-	    }
-
-	case ns_t_mx:
-	case ns_t_afsdb:
-	case ns_t_rt: {
-		u_int t;
-
-		if (rdlen < (size_t)NS_INT16SZ)
-			goto formerr;
-
-		/* Priority. */
-		t = ns_get16(rdata);
-		rdata += NS_INT16SZ;
-		len = SPRINTF((tmp, "%u ", t));
-		T(addstr(tmp, (size_t)len, &buf, &buflen));
-
-		/* Target. */
-		T(addname(msg, msglen, &rdata, origin, &buf, &buflen));
-
-		break;
-	    }
-
-	case ns_t_px: {
-		u_int t;
-
-		if (rdlen < (size_t)NS_INT16SZ)
-			goto formerr;
-
-		/* Priority. */
-		t = ns_get16(rdata);
-		rdata += NS_INT16SZ;
-		len = SPRINTF((tmp, "%u ", t));
-		T(addstr(tmp, (size_t)len, &buf, &buflen));
-
-		/* Name1. */
-		T(addname(msg, msglen, &rdata, origin, &buf, &buflen));
-		T(addstr(" ", (size_t)1, &buf, &buflen));
-
-		/* Name2. */
-		T(addname(msg, msglen, &rdata, origin, &buf, &buflen));
-
-		break;
-	    }
-
-	case ns_t_x25:
-		T(len = charstr(rdata, edata, &buf, &buflen));
-		if (len == 0)
-			goto formerr;
-		rdata += len;
-		break;
-
-	case ns_t_txt:
-		while (rdata < edata) {
-			T(len = charstr(rdata, edata, &buf, &buflen));
-			if (len == 0)
-				goto formerr;
-			rdata += len;
-			if (rdata < edata)
-				T(addstr(" ", (size_t)1, &buf, &buflen));
-		}
-		break;
-
-	case ns_t_nsap: {
-		char t[2+255*3];
-
-		(void) inet_nsap_ntoa((int)rdlen, rdata, t);
-		T(addstr(t, strlen(t), &buf, &buflen));
-		break;
-	    }
-
-	case ns_t_aaaa:
-		if (rdlen != (size_t)NS_IN6ADDRSZ)
-			goto formerr;
-		(void) inet_ntop(AF_INET6, rdata, buf, buflen);
-		addlen(strlen(buf), &buf, &buflen);
-		break;
-
-	case ns_t_loc: {
-		char t[255];
-
-		/* XXX protocol format checking? */
-		(void) loc_ntoa(rdata, t);
-		T(addstr(t, strlen(t), &buf, &buflen));
-		break;
-	    }
-
-	case ns_t_naptr: {
-		u_int order, preference;
-		char t[50];
-
-		if (rdlen < 2U*NS_INT16SZ)
-			goto formerr;
-
-		/* Order, Precedence. */
-		order = ns_get16(rdata);	rdata += NS_INT16SZ;
-		preference = ns_get16(rdata);	rdata += NS_INT16SZ;
-		len = SPRINTF((t, "%u %u ", order, preference));
-		T(addstr(t, (size_t)len, &buf, &buflen));
-
-		/* Flags. */
-		T(len = charstr(rdata, edata, &buf, &buflen));
-		if (len == 0)
-			goto formerr;
-		rdata += len;
-		T(addstr(" ", (size_t)1, &buf, &buflen));
-
-		/* Service. */
-		T(len = charstr(rdata, edata, &buf, &buflen));
-		if (len == 0)
-			goto formerr;
-		rdata += len;
-		T(addstr(" ", (size_t)1, &buf, &buflen));
-
-		/* Regexp. */
-		T(len = charstr(rdata, edata, &buf, &buflen));
-		if (len < 0)
-			return (-1);
-		if (len == 0)
-			goto formerr;
-		rdata += len;
-		T(addstr(" ", (size_t)1, &buf, &buflen));
-
-		/* Server. */
-		T(addname(msg, msglen, &rdata, origin, &buf, &buflen));
-		break;
-	    }
-
-	case ns_t_srv: {
-		u_int priority, weight, port;
-		char t[50];
-
-		if (rdlen < 3U*NS_INT16SZ)
-			goto formerr;
-
-		/* Priority, Weight, Port. */
-		priority = ns_get16(rdata);  rdata += NS_INT16SZ;
-		weight   = ns_get16(rdata);  rdata += NS_INT16SZ;
-		port     = ns_get16(rdata);  rdata += NS_INT16SZ;
-		len = SPRINTF((t, "%u %u %u ", priority, weight, port));
-		T(addstr(t, (size_t)len, &buf, &buflen));
-
-		/* Server. */
-		T(addname(msg, msglen, &rdata, origin, &buf, &buflen));
-		break;
-	    }
-
-	case ns_t_minfo:
-	case ns_t_rp:
-		/* Name1. */
-		T(addname(msg, msglen, &rdata, origin, &buf, &buflen));
-		T(addstr(" ", (size_t)1, &buf, &buflen));
-
-		/* Name2. */
-		T(addname(msg, msglen, &rdata, origin, &buf, &buflen));
-
-		break;
-
-	case ns_t_wks: {
-		int n, lcnt;
-
-		if (rdlen < 1U + NS_INT32SZ)
-			goto formerr;
-
-		/* Address. */
-		(void) inet_ntop(AF_INET, rdata, buf, buflen);
-		addlen(strlen(buf), &buf, &buflen);
-		rdata += NS_INADDRSZ;
-
-		/* Protocol. */
-		len = SPRINTF((tmp, " %u ( ", *rdata));
-		T(addstr(tmp, (size_t)len, &buf, &buflen));
-		rdata += NS_INT8SZ;
-
-		/* Bit map. */
-		n = 0;
-		lcnt = 0;
-		while (rdata < edata) {
-			u_int c = *rdata++;
-			do {
-				if (c & 0200) {
-					if (lcnt == 0) {
-						T(addstr("\n\t\t\t\t", (size_t)5,
-							 &buf, &buflen));
-						lcnt = 10;
-						spaced = 0;
-					}
-					len = SPRINTF((tmp, "%d ", n));
-					T(addstr(tmp, (size_t)len, &buf, &buflen));
-					lcnt--;
-				}
-				c <<= 1;
-			} while (++n & 07);
-		}
-		T(addstr(")", (size_t)1, &buf, &buflen));
-
-		break;
-	    }
-
-	case ns_t_key: {
-		char base64_key[NS_MD5RSA_MAX_BASE64];
-		u_int keyflags, protocol, algorithm, key_id;
-		const char *leader;
-		int n;
-
-		if (rdlen < 0U + NS_INT16SZ + NS_INT8SZ + NS_INT8SZ)
-			goto formerr;
-
-		/* Key flags, Protocol, Algorithm. */
-#ifndef _LIBC
-		key_id = dst_s_dns_key_id(rdata, edata-rdata);
-#else
-		key_id = 0;
-#endif
-		keyflags = ns_get16(rdata);  rdata += NS_INT16SZ;
-		protocol = *rdata++;
-		algorithm = *rdata++;
-		len = SPRINTF((tmp, "0x%04x %u %u",
-			       keyflags, protocol, algorithm));
-		T(addstr(tmp, (size_t)len, &buf, &buflen));
-
-		/* Public key data. */
-		len = b64_ntop(rdata, (size_t)(edata - rdata),
-			       base64_key, sizeof base64_key);
-		if (len < 0)
-			goto formerr;
-		if (len > 15) {
-			T(addstr(" (", (size_t)2, &buf, &buflen));
-			leader = "\n\t\t";
-			spaced = 0;
-		} else
-			leader = " ";
-		for (n = 0; n < len; n += 48) {
-			T(addstr(leader, strlen(leader), &buf, &buflen));
-			T(addstr(base64_key + n, (size_t)MIN(len - n, 48),
-				 &buf, &buflen));
-		}
-		if (len > 15)
-			T(addstr(" )", (size_t)2, &buf, &buflen));
-		n = SPRINTF((tmp, " ; key_tag= %u", key_id));
-		T(addstr(tmp, (size_t)n, &buf, &buflen));
-
-		break;
-	    }
-
-	case ns_t_sig: {
-		char base64_key[NS_MD5RSA_MAX_BASE64];
-		u_int typ, algorithm, labels, footprint;
-		const char *leader;
-		u_long t;
-		int n;
-
-		if (rdlen < 22U)
-			goto formerr;
-
-		/* Type covered, Algorithm, Label count, Original TTL. */
-	        typ = ns_get16(rdata);  rdata += NS_INT16SZ;
-		algorithm = *rdata++;
-		labels = *rdata++;
-		t = ns_get32(rdata);  rdata += NS_INT32SZ;
-		len = SPRINTF((tmp, "%s %d %d %lu ",
-			       p_type((int)typ), algorithm, labels, t));
-		T(addstr(tmp, (size_t)len, &buf, &buflen));
-		if (labels > (u_int)dn_count_labels(name))
-			goto formerr;
-
-		/* Signature expiry. */
-		t = ns_get32(rdata);  rdata += NS_INT32SZ;
-		len = SPRINTF((tmp, "%s ", p_secstodate(t)));
-		T(addstr(tmp, (size_t)len, &buf, &buflen));
-
-		/* Time signed. */
-		t = ns_get32(rdata);  rdata += NS_INT32SZ;
-		len = SPRINTF((tmp, "%s ", p_secstodate(t)));
-		T(addstr(tmp, (size_t)len, &buf, &buflen));
-
-		/* Signature Footprint. */
-		footprint = ns_get16(rdata);  rdata += NS_INT16SZ;
-		len = SPRINTF((tmp, "%u ", footprint));
-		T(addstr(tmp, (size_t)len, &buf, &buflen));
-
-		/* Signer's name. */
-		T(addname(msg, msglen, &rdata, origin, &buf, &buflen));
-
-		/* Signature. */
-		len = b64_ntop(rdata, (size_t)(edata - rdata),
-			       base64_key, sizeof base64_key);
-		if (len > 15) {
-			T(addstr(" (", (size_t)2, &buf, &buflen));
-			leader = "\n\t\t";
-			spaced = 0;
-		} else
-			leader = " ";
-		if (len < 0)
-			goto formerr;
-		for (n = 0; n < len; n += 48) {
-			T(addstr(leader, strlen(leader), &buf, &buflen));
-			T(addstr(base64_key + n, (size_t)MIN(len - n, 48),
-				 &buf, &buflen));
-		}
-		if (len > 15)
-			T(addstr(" )", (size_t)2, &buf, &buflen));
-		break;
-	    }
-
-	case ns_t_nxt: {
-		int n, c;
-
-		/* Next domain name. */
-		T(addname(msg, msglen, &rdata, origin, &buf, &buflen));
-
-		/* Type bit map. */
-		n = edata - rdata;
-		for (c = 0; c < n*8; c++)
-			if (NS_NXT_BIT_ISSET(c, rdata)) {
-				len = SPRINTF((tmp, " %s", p_type(c)));
-				T(addstr(tmp, (size_t)len, &buf, &buflen));
-			}
-		break;
-	    }
-
-	case ns_t_cert: {
-		u_int c_type, key_tag, alg;
-		int n;
-		unsigned int siz;
-		char base64_cert[8192], tmp1[40];
-		const char *leader;
-
-		c_type  = ns_get16(rdata); rdata += NS_INT16SZ;
-		key_tag = ns_get16(rdata); rdata += NS_INT16SZ;
-		alg = (u_int) *rdata++;
-
-		len = SPRINTF((tmp1, "%d %d %d ", c_type, key_tag, alg));
-		T(addstr(tmp1, (size_t)len, &buf, &buflen));
-		siz = (edata-rdata)*4/3 + 4; /* "+4" accounts for trailing \0 */
-		if (siz > sizeof(base64_cert) * 3/4) {
-			const char *str = "record too long to print";
-			T(addstr(str, strlen(str), &buf, &buflen));
-		}
-		else {
-			len = b64_ntop(rdata, (size_t)(edata-rdata),
-			    base64_cert, siz);
-
-			if (len < 0)
-				goto formerr;
-			else if (len > 15) {
-				T(addstr(" (", (size_t)2, &buf, &buflen));
-				leader = "\n\t\t";
-				spaced = 0;
-			}
-			else
-				leader = " ";
-
-			for (n = 0; n < len; n += 48) {
-				T(addstr(leader, strlen(leader),
-					 &buf, &buflen));
-				T(addstr(base64_cert + n, (size_t)MIN(len - n, 48),
-					 &buf, &buflen));
-			}
-			if (len > 15)
-				T(addstr(" )", (size_t)2, &buf, &buflen));
-		}
-		break;
-	    }
-
-	case ns_t_tkey: {
-		/* KJD - need to complete this */
-		u_long t;
-		int mode, err, keysize;
-
-		/* Algorithm name. */
-		T(addname(msg, msglen, &rdata, origin, &buf, &buflen));
-		T(addstr(" ", (size_t)1, &buf, &buflen));
-
-		/* Inception. */
-		t = ns_get32(rdata);  rdata += NS_INT32SZ;
-		len = SPRINTF((tmp, "%s ", p_secstodate(t)));
-		T(addstr(tmp, (size_t)len, &buf, &buflen));
-
-		/* Experation. */
-		t = ns_get32(rdata);  rdata += NS_INT32SZ;
-		len = SPRINTF((tmp, "%s ", p_secstodate(t)));
-		T(addstr(tmp, (size_t)len, &buf, &buflen));
-
-		/* Mode , Error, Key Size. */
-		/* Priority, Weight, Port. */
-		mode = ns_get16(rdata);  rdata += NS_INT16SZ;
-		err  = ns_get16(rdata);  rdata += NS_INT16SZ;
-		keysize  = ns_get16(rdata);  rdata += NS_INT16SZ;
-		len = SPRINTF((tmp, "%u %u %u ", mode, err, keysize));
-		T(addstr(tmp, (size_t)len, &buf, &buflen));
-
-		/* XXX need to dump key, print otherdata length & other data */
-		break;
-	    }
-
-	case ns_t_tsig: {
-		/* BEW - need to complete this */
-		int n;
-
-		T(len = addname(msg, msglen, &rdata, origin, &buf, &buflen));
-		T(addstr(" ", (size_t)1, &buf, &buflen));
-		rdata += 8; /* time */
-		n = ns_get16(rdata); rdata += INT16SZ;
-		rdata += n; /* sig */
-		n = ns_get16(rdata); rdata += INT16SZ; /* original id */
-		sprintf(buf, "%d", ns_get16(rdata));
-		rdata += INT16SZ;
-		addlen(strlen(buf), &buf, &buflen);
-		break;
-	    }
-
-	case ns_t_a6: {
-		struct in6_addr a;
-		int pbyte, pbit;
-
-		/* prefix length */
-		if (rdlen == 0U) goto formerr;
-		len = SPRINTF((tmp, "%d ", *rdata));
-		T(addstr(tmp, (size_t)len, &buf, &buflen));
-		pbit = *rdata;
-		if (pbit > 128) goto formerr;
-		pbyte = (pbit & ~7) / 8;
-		rdata++;
-
-		/* address suffix: provided only when prefix len != 128 */
-		if (pbit < 128) {
-			if (rdata + pbyte >= edata) goto formerr;
-			memset(&a, 0, sizeof(a));
-			memcpy(&a.s6_addr[pbyte], rdata, sizeof(a) - pbyte);
-			(void) inet_ntop(AF_INET6, &a, buf, buflen);
-			addlen(strlen(buf), &buf, &buflen);
-			rdata += sizeof(a) - pbyte;
-		}
-
-		/* prefix name: provided only when prefix len > 0 */
-		if (pbit == 0)
-			break;
-		if (rdata >= edata) goto formerr;
-		T(addstr(" ", (size_t)1, &buf, &buflen));
-		T(addname(msg, msglen, &rdata, origin, &buf, &buflen));
-
-		break;
-	    }
-
-	case ns_t_opt: {
-		len = SPRINTF((tmp, "%u bytes", class));
-		T(addstr(tmp, (size_t)len, &buf, &buflen));
-		break;
-	    }
-
-	default:
-		comment = "unknown RR type";
-		goto hexify;
-	}
-	return (buf - obuf);
- formerr:
-	comment = "RR format error";
- hexify: {
-	int n, m;
-	char *p;
-
-	len = SPRINTF((tmp, "\\# %tu%s\t; %s", edata - rdata,
-		       rdlen != 0 ? " (" : "", comment));
-	T(addstr(tmp, (size_t)len, &buf, &buflen));
-	while (rdata < edata) {
-		p = tmp;
-		p += SPRINTF((p, "\n\t"));
-		spaced = 0;
-		n = MIN(16, edata - rdata);
-		for (m = 0; m < n; m++)
-			p += SPRINTF((p, "%02x ", rdata[m]));
-		T(addstr(tmp, (size_t)(p - tmp), &buf, &buflen));
-		if (n < 16) {
-			T(addstr(")", (size_t)1, &buf, &buflen));
-			T(addtab((size_t)(p - tmp + 1), (size_t)48, spaced, &buf, &buflen));
-		}
-		p = tmp;
-		p += SPRINTF((p, "; "));
-		for (m = 0; m < n; m++)
-			*p++ = (isascii(rdata[m]) && isprint(rdata[m]))
-				? rdata[m]
-				: '.';
-		T(addstr(tmp, (size_t)(p - tmp), &buf, &buflen));
-		rdata += n;
-	}
-	return (buf - obuf);
-    }
-}
-
-/* Private. */
-
-/*
- * size_t
- * prune_origin(name, origin)
- *	Find out if the name is at or under the current origin.
- * return:
- *	Number of characters in name before start of origin,
- *	or length of name if origin does not match.
- * notes:
- *	This function should share code with samedomain().
- */
-static size_t
-prune_origin(const char *name, const char *origin) {
-	const char *oname = name;
-
-	while (*name != '\0') {
-		if (origin != NULL && ns_samename(name, origin) == 1)
-			return (name - oname - (name > oname));
-		while (*name != '\0') {
-			if (*name == '\\') {
-				name++;
-				/* XXX need to handle \nnn form. */
-				if (*name == '\0')
-					break;
-			} else if (*name == '.') {
-				name++;
-				break;
-			}
-			name++;
-		}
-	}
-	return (name - oname);
-}
-
-/*
- * int
- * charstr(rdata, edata, buf, buflen)
- *	Format a <character-string> into the presentation buffer.
- * return:
- *	Number of rdata octets consumed
- *	0 for protocol format error
- *	-1 for output buffer error
- * side effects:
- *	buffer is advanced on success.
- */
-static int
-charstr(const u_char *rdata, const u_char *edata, char **buf, size_t *buflen) {
-	const u_char *odata = rdata;
-	size_t save_buflen = *buflen;
-	char *save_buf = *buf;
-
-	if (addstr("\"", (size_t)1, buf, buflen) < 0)
-		goto enospc;
-	if (rdata < edata) {
-		int n = *rdata;
-
-		if (rdata + 1 + n <= edata) {
-			rdata++;
-			while (n-- > 0) {
-				if (strchr("\n\"\\", *rdata) != NULL)
-					if (addstr("\\", (size_t)1, buf, buflen) < 0)
-						goto enospc;
-				if (addstr((const char *)rdata, (size_t)1,
-					   buf, buflen) < 0)
-					goto enospc;
-				rdata++;
-			}
-		}
-	}
-	if (addstr("\"", (size_t)1, buf, buflen) < 0)
-		goto enospc;
-	return (rdata - odata);
- enospc:
-	errno = ENOSPC;
-	*buf = save_buf;
-	*buflen = save_buflen;
-	return (-1);
-}
-
-static int
-addname(const u_char *msg, size_t msglen,
-	const u_char **pp, const char *origin,
-	char **buf, size_t *buflen)
-{
-	size_t newlen, save_buflen = *buflen;
-	char *save_buf = *buf;
-	int n;
-
-	n = dn_expand(msg, msg + msglen, *pp, *buf, (int)*buflen);
-	if (n < 0)
-		goto enospc;	/* Guess. */
-	newlen = prune_origin(*buf, origin);
-	if (**buf == '\0') {
-		goto root;
-	} else if (newlen == 0U) {
-		/* Use "@" instead of name. */
-		if (newlen + 2 > *buflen)
-			goto enospc;        /* No room for "@\0". */
-		(*buf)[newlen++] = '@';
-		(*buf)[newlen] = '\0';
-	} else {
-		if (((origin == NULL || origin[0] == '\0') ||
-		    (origin[0] != '.' && origin[1] != '\0' &&
-		    (*buf)[newlen] == '\0')) && (*buf)[newlen - 1] != '.') {
-			/* No trailing dot. */
- root:
-			if (newlen + 2 > *buflen)
-				goto enospc;	/* No room for ".\0". */
-			(*buf)[newlen++] = '.';
-			(*buf)[newlen] = '\0';
-		}
-	}
-	*pp += n;
-	addlen(newlen, buf, buflen);
-	**buf = '\0';
-	return (newlen);
- enospc:
-	errno = ENOSPC;
-	*buf = save_buf;
-	*buflen = save_buflen;
-	return (-1);
-}
-
-static void
-addlen(size_t len, char **buf, size_t *buflen) {
-	assert(len <= *buflen);
-	*buf += len;
-	*buflen -= len;
-}
-
-static int
-addstr(const char *src, size_t len, char **buf, size_t *buflen) {
-	if (len >= *buflen) {
-		errno = ENOSPC;
-		return (-1);
-	}
-	memcpy(*buf, src, len);
-	addlen(len, buf, buflen);
-	**buf = '\0';
-	return (0);
-}
-
-static int
-addtab(size_t len, size_t target, int spaced, char **buf, size_t *buflen) {
-	size_t save_buflen = *buflen;
-	char *save_buf = *buf;
-	int t;
-
-	if (spaced || len >= target - 1) {
-		T(addstr("  ", (size_t)2, buf, buflen));
-		spaced = 1;
-	} else {
-		for (t = (target - len - 1) / 8; t >= 0; t--)
-			if (addstr("\t", (size_t)1, buf, buflen) < 0) {
-				*buflen = save_buflen;
-				*buf = save_buf;
-				return (-1);
-			}
-		spaced = 0;
-	}
-	return (spaced);
-}
diff --git a/libc/netbsd/nameser/ns_samedomain.c b/libc/netbsd/nameser/ns_samedomain.c
deleted file mode 100644
index 04fdb61..0000000
--- a/libc/netbsd/nameser/ns_samedomain.c
+++ /dev/null
@@ -1,211 +0,0 @@
-/*	$NetBSD: ns_samedomain.c,v 1.2 2004/05/20 20:35:05 christos Exp $	*/
-
-/*
- * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
- * Copyright (c) 1995,1999 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.
- */
-
-#include <sys/cdefs.h>
-#ifndef lint
-#ifdef notdef
-static const char rcsid[] = "Id: ns_samedomain.c,v 1.1.2.2.4.2 2004/03/16 12:34:17 marka Exp";
-#else
-__RCSID("$NetBSD: ns_samedomain.c,v 1.2 2004/05/20 20:35:05 christos Exp $");
-#endif
-#endif
-
-#include <sys/types.h>
-#include "arpa_nameser.h"
-#include <errno.h>
-#include <string.h>
-
-#ifndef _LIBC
-/*
- * int
- * ns_samedomain(a, b)
- *	Check whether a name belongs to a domain.
- * Inputs:
- *	a - the domain whose ancestory is being verified
- *	b - the potential ancestor we're checking against
- * Return:
- *	boolean - is a at or below b?
- * Notes:
- *	Trailing dots are first removed from name and domain.
- *	Always compare complete subdomains, not only whether the
- *	domain name is the trailing string of the given name.
- *
- *	"host.foobar.top" lies in "foobar.top" and in "top" and in ""
- *	but NOT in "bar.top"
- */
-
-int
-ns_samedomain(const char *a, const char *b) {
-	size_t la, lb;
-	int diff, i, escaped;
-	const char *cp;
-
-	la = strlen(a);
-	lb = strlen(b);
-
-	/* Ignore a trailing label separator (i.e. an unescaped dot) in 'a'. */
-	if (la != 0U && a[la - 1] == '.') {
-		escaped = 0;
-		/* Note this loop doesn't get executed if la==1. */
-		for (i = la - 2; i >= 0; i--)
-			if (a[i] == '\\') {
-				if (escaped)
-					escaped = 0;
-				else
-					escaped = 1;
-			} else
-				break;
-		if (!escaped)
-			la--;
-	}
-
-	/* Ignore a trailing label separator (i.e. an unescaped dot) in 'b'. */
-	if (lb != 0U && b[lb - 1] == '.') {
-		escaped = 0;
-		/* note this loop doesn't get executed if lb==1 */
-		for (i = lb - 2; i >= 0; i--)
-			if (b[i] == '\\') {
-				if (escaped)
-					escaped = 0;
-				else
-					escaped = 1;
-			} else
-				break;
-		if (!escaped)
-			lb--;
-	}
-
-	/* lb == 0 means 'b' is the root domain, so 'a' must be in 'b'. */
-	if (lb == 0U)
-		return (1);
-
-	/* 'b' longer than 'a' means 'a' can't be in 'b'. */
-	if (lb > la)
-		return (0);
-
-	/* 'a' and 'b' being equal at this point indicates sameness. */
-	if (lb == la)
-		return (strncasecmp(a, b, lb) == 0);
-
-	/* Ok, we know la > lb. */
-
-	diff = la - lb;
-
-	/*
-	 * If 'a' is only 1 character longer than 'b', then it can't be
-	 * a subdomain of 'b' (because of the need for the '.' label
-	 * separator).
-	 */
-	if (diff < 2)
-		return (0);
-
-	/*
-	 * If the character before the last 'lb' characters of 'b'
-	 * isn't '.', then it can't be a match (this lets us avoid
-	 * having "foobar.com" match "bar.com").
-	 */
-	if (a[diff - 1] != '.')
-		return (0);
-
-	/*
-	 * We're not sure about that '.', however.  It could be escaped
-         * and thus not a really a label separator.
-	 */
-	escaped = 0;
-	for (i = diff - 2; i >= 0; i--)
-		if (a[i] == '\\') {
-			if (escaped)
-				escaped = 0;
-			else
-				escaped = 1;
-		} else
-			break;
-	if (escaped)
-		return (0);
-
-	/* Now compare aligned trailing substring. */
-	cp = a + diff;
-	return (strncasecmp(cp, b, lb) == 0);
-}
-
-/*
- * int
- * ns_subdomain(a, b)
- *	is "a" a subdomain of "b"?
- */
-int
-ns_subdomain(const char *a, const char *b) {
-	return (ns_samename(a, b) != 1 && ns_samedomain(a, b));
-}
-#endif
-
-/*
- * int
- * ns_makecanon(src, dst, dstsize)
- *	make a canonical copy of domain name "src"
- * notes:
- *	foo -> foo.
- *	foo. -> foo.
- *	foo.. -> foo.
- *	foo\. -> foo\..
- *	foo\\. -> foo\\.
- */
-
-int
-ns_makecanon(const char *src, char *dst, size_t dstsize) {
-	size_t n = strlen(src);
-
-	if (n + sizeof "." > dstsize) {			/* Note: sizeof == 2 */
-		errno = EMSGSIZE;
-		return (-1);
-	}
-	strcpy(dst, src);
-	while (n >= 1U && dst[n - 1] == '.')		/* Ends in "." */
-		if (n >= 2U && dst[n - 2] == '\\' &&	/* Ends in "\." */
-		    (n < 3U || dst[n - 3] != '\\'))	/* But not "\\." */
-			break;
-		else
-			dst[--n] = '\0';
-	dst[n++] = '.';
-	dst[n] = '\0';
-	return (0);
-}
-
-/*
- * int
- * ns_samename(a, b)
- *	determine whether domain name "a" is the same as domain name "b"
- * return:
- *	-1 on error
- *	0 if names differ
- *	1 if names are the same
- */
-
-int
-ns_samename(const char *a, const char *b) {
-	char ta[NS_MAXDNAME], tb[NS_MAXDNAME];
-
-	if (ns_makecanon(a, ta, sizeof ta) < 0 ||
-	    ns_makecanon(b, tb, sizeof tb) < 0)
-		return (-1);
-	if (strcasecmp(ta, tb) == 0)
-		return (1);
-	else
-		return (0);
-}
diff --git a/libc/netbsd/nameser/ns_ttl.c b/libc/netbsd/nameser/ns_ttl.c
deleted file mode 100644
index cc98331..0000000
--- a/libc/netbsd/nameser/ns_ttl.c
+++ /dev/null
@@ -1,164 +0,0 @@
-/*	$NetBSD: ns_ttl.c,v 1.2 2004/05/20 20:35:05 christos Exp $	*/
-
-/*
- * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
- * 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.
- */
-
-#include <sys/cdefs.h>
-#ifndef lint
-#ifdef notdef
-static const char rcsid[] = "Id: ns_ttl.c,v 1.1.206.1 2004/03/09 08:33:45 marka Exp";
-#else
-__RCSID("$NetBSD: ns_ttl.c,v 1.2 2004/05/20 20:35:05 christos Exp $");
-#endif
-#endif
-
-/* Import. */
-
-#include "arpa_nameser.h"
-
-#include <ctype.h>
-#include <errno.h>
-#include <stdio.h>
-#include <string.h>
-
-#ifdef SPRINTF_CHAR
-# define SPRINTF(x) strlen(sprintf/**/x)
-#else
-# define SPRINTF(x) ((size_t)sprintf x)
-#endif
-
-/* Forward. */
-
-static int	fmt1(int t, char s, char **buf, size_t *buflen);
-
-/* Macros. */
-
-#define T(x) do { if ((x) < 0) return (-1); } while(0)
-
-/* Public. */
-
-int
-ns_format_ttl(u_long src, char *dst, size_t dstlen) {
-	char *odst = dst;
-	int secs, mins, hours, days, weeks, x;
-	char *p;
-
-	secs = src % 60;   src /= 60;
-	mins = src % 60;   src /= 60;
-	hours = src % 24;  src /= 24;
-	days = src % 7;    src /= 7;
-	weeks = src;       src = 0;
-
-	x = 0;
-	if (weeks) {
-		T(fmt1(weeks, 'W', &dst, &dstlen));
-		x++;
-	}
-	if (days) {
-		T(fmt1(days, 'D', &dst, &dstlen));
-		x++;
-	}
-	if (hours) {
-		T(fmt1(hours, 'H', &dst, &dstlen));
-		x++;
-	}
-	if (mins) {
-		T(fmt1(mins, 'M', &dst, &dstlen));
-		x++;
-	}
-	if (secs || !(weeks || days || hours || mins)) {
-		T(fmt1(secs, 'S', &dst, &dstlen));
-		x++;
-	}
-
-	if (x > 1) {
-		int ch;
-
-		for (p = odst; (ch = *p) != '\0'; p++)
-			if (isascii(ch) && isupper(ch))
-				*p = tolower(ch);
-	}
-
-	return (dst - odst);
-}
-
-#ifndef _LIBC
-int
-ns_parse_ttl(const char *src, u_long *dst) {
-	u_long ttl, tmp;
-	int ch, digits, dirty;
-
-	ttl = 0;
-	tmp = 0;
-	digits = 0;
-	dirty = 0;
-	while ((ch = *src++) != '\0') {
-		if (!isascii(ch) || !isprint(ch))
-			goto einval;
-		if (isdigit(ch)) {
-			tmp *= 10;
-			tmp += (ch - '0');
-			digits++;
-			continue;
-		}
-		if (digits == 0)
-			goto einval;
-		if (islower(ch))
-			ch = toupper(ch);
-		switch (ch) {
-		case 'W':  tmp *= 7;	/*FALLTHROUGH*/
-		case 'D':  tmp *= 24;	/*FALLTHROUGH*/
-		case 'H':  tmp *= 60;	/*FALLTHROUGH*/
-		case 'M':  tmp *= 60;	/*FALLTHROUGH*/
-		case 'S':  break;
-		default:   goto einval;
-		}
-		ttl += tmp;
-		tmp = 0;
-		digits = 0;
-		dirty = 1;
-	}
-	if (digits > 0) {
-		if (dirty)
-			goto einval;
-		else
-			ttl += tmp;
-	}
-	*dst = ttl;
-	return (0);
-
- einval:
-	errno = EINVAL;
-	return (-1);
-}
-#endif
-
-/* Private. */
-
-static int
-fmt1(int t, char s, char **buf, size_t *buflen) {
-	char tmp[50];
-	size_t len;
-
-	len = SPRINTF((tmp, "%d%c", t, s));
-	if (len + 1 > *buflen)
-		return (-1);
-	strcpy(*buf, tmp);
-	*buf += len;
-	*buflen -= len;
-	return (0);
-}