1 files changed, 0 insertions, 404 deletions

diff --git a/usr.sbin/named/db_update.c b/usr.sbin/named/db_update.c
deleted file mode 100644
index 60702cc5d9e..00000000000
--- a/usr.sbin/named/db_update.c
+++ /dev/null
@@ -1,404 +0,0 @@
-/*
- * Copyright (c) 1986, 1990 Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- *	This product includes software developed by the University of
- *	California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#ifndef lint
-/*static char sccsid[] = "from: @(#)db_update.c	4.28 (Berkeley) 3/21/91";*/
-static char rcsid[] = "$Id: db_update.c,v 1.1 1995/10/18 08:47:50 deraadt Exp $";
-#endif /* not lint */
-
-#include <sys/param.h>
-#include <sys/socket.h>
-#include <sys/time.h>
-#include <netinet/in.h>
-#include <arpa/nameser.h>
-#include <stdio.h>
-#include <syslog.h>
-#include "ns.h"
-#include "db.h"
-
-extern struct timeval	tt;
-extern FILE *ddt;
-extern struct sockaddr_in from_addr;	/* Source addr of last packet */
-extern int needs_prime_cache;
-
-int	max_cache_ttl = (7*24*60*60);	/* ONE_WEEK maximum ttl */
-int	min_cache_ttl = (5*60);		/* 5 minute minimum ttl */
-
-/*
- * Update data base. Flags control the action.
- * Inverse query tables modified.
- */
-db_update(name, odp, newdp, flags, htp)
-	char name[];
-	struct databuf *odp, *newdp;
-	int flags;
-	struct hashbuf *htp;
-{
-	register struct namebuf *np;
-	register struct databuf *dp, *pdp;
-	char *fname;
-        int foundRR = 0;
-
-#ifdef DEBUG
-	if (debug >= 3)
-		fprintf(ddt,"db_update(%s, 0x%x, 0x%x, 0%o, 0x%x)%s\n",
-		    name, odp, newdp, flags, htp,
-		    (odp && (odp->d_flags&DB_F_HINT)) ? " hint":"" );
-#endif
-	np = nlookup(name, &htp, &fname, newdp != NULL);
-	if (np == NULL || fname != name)
-		return (NONAME);
-
-        /* Reflect certain updates in hint cache also... */
-	/* Don't stick data we are authoritative for in hints. */
-        if (!(flags & DB_NOHINTS) && (odp != NULL) &&
-	    (odp->d_zone <= 0) && !(odp->d_flags & DB_F_HINT) &&
-            ((name[0] == '\0' && odp->d_type == T_NS) ||
-	     (odp->d_type == T_A)))
-        {
-		register struct databuf *dp;
-#ifdef DEBUG
-		if (debug >= 3)
-			fprintf(ddt,"db_update: hint '%s' %d\n",
-				name, odp->d_ttl);
-#endif
-		dp = savedata(odp->d_class, odp->d_type, odp->d_ttl,
-			odp->d_data, odp->d_size);
-		dp->d_zone = DB_Z_CACHE;
-		dp->d_flags = DB_F_HINT;
-		if (db_update(name, dp,dp, (flags|DB_NOHINTS), fcachetab) != OK) {
-#ifdef DEBUG		
-			if (debug > 2)
-				fprintf(ddt, "db_update: hint %x freed\n", dp);
-#endif
-			(void) free((char *)dp);
-		}
-        }
-
-	if (odp != NULL) {
-		pdp = NULL;
-		for (dp = np->n_data; dp != NULL; ) {
-			if (!match(dp, odp->d_class, odp->d_type)) {
-				if ((dp->d_type == T_CNAME ||
-				    odp->d_type == T_CNAME) &&
-				    odp->d_mark == dp->d_mark &&
-				    zones[odp->d_zone].z_type != Z_CACHE) {
-					syslog(LOG_ERR,
-				"%s has CNAME and other data (illegal)\n",
-					    name);
-#ifdef DEBUG
-					if (debug)
-					    fprintf(ddt,
-				"db_update: %s: CNAME and more (%d, %d)\n",
-						name, odp->d_type, dp->d_type);
-#endif
-				}
-				goto skip;
-			}
-#ifdef DEBUG
-			if (debug >= 5)
-				fprintf(ddt,"db_update: flags = %#x, sizes = %d, %d (%d)\n",
-				    flags, odp->d_size, dp->d_size,
-				    db_cmp(dp, odp));
-#endif
-			if (flags & DB_NOTAUTH && dp->d_zone) {
-#ifdef DEBUG
-				if (debug)
-					fprintf(ddt,
-					"%s attempted update to auth zone %d '%s'\n",
-				    inet_ntoa(from_addr.sin_addr),
-				    dp->d_zone, zones[dp->d_zone].z_origin);
-#endif
-				return (AUTH);
-			}
-			if ((flags & DB_NODATA) && !db_cmp(dp, odp)) {
-				/* refresh ttl if cache entry */
-				if (dp->d_zone == 0) {
-					if (odp->d_zone != 0) {	/* XXX */
-						/* changing cache->auth */
-						dp->d_zone = odp->d_zone;
-						dp->d_ttl = odp->d_ttl;
-#ifdef DEBUG
-						if (debug > 3)
-							fprintf(ddt,
-				"db_update: cache entry now in auth zone\n");
-#endif
-						return (DATAEXISTS);
-					}
-					fixttl(odp);
-					if (odp->d_ttl > dp->d_ttl)
-						dp->d_ttl = odp->d_ttl;
-#ifdef DEBUG
-				        if (debug >= 3)
-				        fprintf(ddt,"db_update: new ttl %d, +%d\n",
-				                dp->d_ttl, dp->d_ttl - tt.tv_sec);
-#endif
-				}
-				return (DATAEXISTS);
-			}
-			/*
-			 * If the old databuf has some data, check that the
-			 * data matches that in the new databuf (so UPDATED
-			 * will delete only the matching RR)
-			 */
-			if (odp->d_size > 0) {
-				if (db_cmp(dp, odp))
-					goto skip;
-			}
-			foundRR = 1;
-			if (flags & DB_DELETE)
-				dp = rm_datum(dp, np, pdp);
-			else {
-skip:				pdp = dp;
-				dp = dp->d_next;
-			}
-		}
-                if (!foundRR) {
-			if (flags & DB_DELETE)
-				return(NODATA);
-			if (flags & DB_MEXIST)
-				return(NODATA);
-		}
-	}
-	if (newdp == NULL)
-		return (OK);
-	fixttl(newdp);
-#ifdef DEBUG
-        if (debug >= 3)
-	        fprintf(ddt,"db_update: adding%s %x\n",
-			(newdp->d_flags&DB_F_HINT) ? " hint":"", newdp);
-#endif
-	if (!(newdp->d_flags & DB_F_HINT))
-		addinv(np, newdp);	/* modify inverse query tables */
-
-	/* Add to end of list, generally preserving order */
-	newdp->d_next = NULL;
-	if ((dp = np->n_data) == NULL)  {
-		np->n_data = newdp;
-		return (OK);
-	}
-	/* XXX: need to check for duplicate WKS records and flag error */
-	while (dp->d_next != NULL) {
-		if ((flags & DB_NODATA) && !db_cmp(dp, newdp))
-			return (DATAEXISTS);
-		dp = dp->d_next;
-	}
-	if ((flags & DB_NODATA) && !db_cmp(dp, newdp))
-		return (DATAEXISTS);
-	dp->d_next = newdp;
-	return (OK);
-}
-
-fixttl(dp)
-register struct databuf *dp;
-{
-	if (dp->d_zone == 0 && !(dp->d_flags & DB_F_HINT)) {
-		if (dp->d_ttl <= tt.tv_sec)
-			return;
-		else if (dp->d_ttl < tt.tv_sec+min_cache_ttl)
-			dp->d_ttl = tt.tv_sec+min_cache_ttl;
-		else if (dp->d_ttl > tt.tv_sec+max_cache_ttl)
-			dp->d_ttl = tt.tv_sec+max_cache_ttl;
-	}
-	return;
-}
-
-struct invbuf *invtab[INVHASHSZ];	/* Inverse query hash table */
-
-/*
- * Add data 'dp' to inverse query tables for name 'np'.
- */
-addinv(np, dp)
-	struct namebuf *np;
-	struct databuf *dp;
-{
-	register struct invbuf *ip;
-	register int hval, i;
-
-	switch (dp->d_type) {
-	case T_A:
-	case T_UID:
-	case T_GID:
-		break;
-
-	default:
-		return;
-	}
-
-	hval = dhash(dp->d_data, dp->d_size);
-	for (ip = invtab[hval]; ip != NULL; ip = ip->i_next)
-		for (i = 0; i < INVBLKSZ; i++)
-			if (ip->i_dname[i] == NULL) {
-				ip->i_dname[i] = np;
-				return;
-			}
-	ip = saveinv();
-	ip->i_next = invtab[hval];
-	invtab[hval] = ip;
-	ip->i_dname[0] = np;
-}
-
-/*
- * Remove data 'odp' from inverse query table.
- */
-rminv(odp)
-	struct databuf *odp;
-{
-	register struct invbuf *ip;
-	register struct databuf *dp;
-	struct namebuf *np;
-	register int i;
-
-	for (ip = invtab[dhash(odp->d_data, odp->d_size)]; ip != NULL;
-	    ip = ip->i_next) {
-		for (i = 0; i < INVBLKSZ; i++) {
-			if ((np = ip->i_dname[i]) == NULL)
-				break;
-			for (dp = np->n_data; dp != NULL; dp = dp->d_next) {
-				if (!match(dp, odp->d_class, odp->d_type))
-					continue;
-				if (db_cmp(dp, odp))
-					continue;
-				while (i < INVBLKSZ-1) {
-					ip->i_dname[i] = ip->i_dname[i+1];
-					i++;
-				}
-				ip->i_dname[i] = NULL;
-				return;
-			}
-		}
-	}
-}
-
-/*
- * Compute hash value from data.
- */
-dhash(dp, dlen)
-	char *dp;
-	int dlen;
-{
-	register char *cp;
-	register unsigned hval;
-	register int n;
-
-	n = dlen;
-	if (n > 8)
-		n = 8;
-	hval = 0;
-	for (cp = dp; --n >= 0; ) {
-		hval <<= 1;
-		hval += *cp++;
-	}
-	return (hval % INVHASHSZ);
-}
-
-/*
- * Compare type, class and data from databufs for equivalence.
- * Must be case insensitive for some domain names.
- * Return 0 if equivalent, nonzero otherwise.
- */
-db_cmp(dp1, dp2)
-	register struct databuf *dp1, *dp2;
-
-{
-	register char *cp1, *cp2;
-	int len;
-
-	if (dp1->d_type != dp2->d_type || dp1->d_class != dp2->d_class)
-		return(1);
-	if (dp1->d_size != dp2->d_size)
-		return(1);
-	if (dp1->d_mark != dp2->d_mark)
-		return(1);		/* old and new RR's are distinct */
-	switch (dp1->d_type) {
-
-	case T_A:
-	case T_UID:
-	case T_GID:
-	case T_WKS:
-	case T_NULL:
-#ifdef ALLOW_T_UNSPEC
-        case T_UNSPEC:
-#endif ALLOW_T_UNSPEC
-		return(bcmp(dp1->d_data, dp2->d_data, dp1->d_size));
-
-	case T_NS:
-	case T_CNAME:
-	case T_PTR:
-	case T_MB:
-	case T_MG:
-	case T_MR:
-	case T_UINFO:
-		return(strcasecmp(dp1->d_data, dp2->d_data));
-
-	case T_HINFO:
-		cp1 = dp1->d_data;
-		cp2 = dp2->d_data;
-		len = *cp1;
-		if (strncasecmp(++cp1, ++cp2, len))
-			return(1);
-		cp1 += len;
-		cp2 += len;
-		len = *cp1;
-		return(strncasecmp(++cp1, ++cp2, len));
-
-	case T_SOA:
-	case T_MINFO:
-		if (strcasecmp(dp1->d_data, dp2->d_data))
-			return(1);
-		cp1 = dp1->d_data + strlen(dp1->d_data) + 1;
-		cp2 = dp2->d_data + strlen(dp2->d_data) + 1;
-		if (dp1->d_type != T_SOA)
-			return(strcasecmp(cp1, cp2));
-		if (strcasecmp(cp1, cp2))
-			return(1);
-		cp1 += strlen(cp1) + 1;
-		cp2 += strlen(cp2) + 1;
-		return(bcmp(cp1, cp2, sizeof(u_long) * 5));
-	
-	case T_MX:
-		cp1 = dp1->d_data;
-		cp2 = dp2->d_data;
-		if (*cp1++ != *cp2++ || *cp1++ != *cp2++)	/* cmp prio */
-			return(1);
-		return(strcasecmp(cp1, cp2));
-
-	case T_TXT:
-		if (dp1->d_size != dp2->d_size)
-			return(1);
-		return(bcmp(dp1->d_data, dp2->d_data, dp1->d_size));
-
-	default:
-		return (1);
-	}
-}