222 lines
6.8 KiB
C
222 lines
6.8 KiB
C
#if !defined(lint) && !defined(SABER)
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static char sccsid[] = "@(#)db_save.c 4.16 (Berkeley) 3/21/91";
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static char rcsid[] = "$Id: db_save.c,v 8.15 1998/01/26 22:40:08 halley Exp $";
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#endif /* not lint */
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/*
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* Copyright (c) 1986
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* Portions Copyright (c) 1993 by Digital Equipment Corporation.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies, and that
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* the name of Digital Equipment Corporation not be used in advertising or
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* publicity pertaining to distribution of the document or software without
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* specific, written prior permission.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
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* WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT
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* CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
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* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
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* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
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* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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* SOFTWARE.
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*/
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/*
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* Portions Copyright (c) 1996, 1997 by Internet Software Consortium.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
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* ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
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* CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
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* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
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* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
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* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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* SOFTWARE.
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*/
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/*
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* Buffer allocation and deallocation routines.
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*/
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#include "port_before.h"
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/nameser.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <syslog.h>
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#include <time.h>
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#include <isc/eventlib.h>
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#include <isc/logging.h>
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#include <isc/memcluster.h>
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#include "port_after.h"
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#include "named.h"
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/*
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* Allocate a name buffer & save name.
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*/
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struct namebuf *
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savename(const char *name, int len) {
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struct namebuf *np;
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/*
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* Note that MAXLABEL * 4 < 256, so a single length byte is enough.
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* Also, we use MAXLABEL * 4 because each label character can
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* expand into up to four characters when rendered in canonical
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* form.
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*/
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INSIST(len >= 0 && len <= (MAXLABEL * 4));
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np = (struct namebuf *) memget(NAMESIZE(len));
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if (np == NULL)
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panic("savename: memget", NULL);
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memset(np, 0, NAMESIZE(len));
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NAMELEN(*np) = (unsigned)len;
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memcpy(NAME(*np), name, len);
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NAME(*np)[len] = '\0';
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return (np);
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}
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/*
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* Allocate a data buffer & save data.
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*/
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struct databuf *
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savedata(class, type, ttl, data, size)
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int class, type;
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u_int32_t ttl;
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u_char *data;
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int size;
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{
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struct databuf *dp;
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int bytes = (type == T_NS) ? DATASIZE(size)+INT32SZ : DATASIZE(size);
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dp = (struct databuf *)memget(bytes);
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if (dp == NULL)
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panic("savedata: memget", NULL);
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memset(dp, 0, bytes);
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dp->d_next = NULL;
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dp->d_type = type;
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dp->d_class = class;
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dp->d_ttl = ttl;
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dp->d_size = size;
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dp->d_mark = 0;
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dp->d_flags = 0;
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dp->d_cred = 0;
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dp->d_clev = 0;
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dp->d_rcode = NOERROR;
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dp->d_ns = NULL;
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dp->d_nstime = 0;
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memcpy(dp->d_data, data, dp->d_size);
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return (dp);
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}
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int hashsizes[] = { /* hashtable sizes */
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2,
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11,
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113,
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337,
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977,
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2053,
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4073,
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8011,
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16001,
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99887,
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0
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};
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/*
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* Allocate a data buffer & save data.
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*/
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struct hashbuf *
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savehash(oldhtp)
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struct hashbuf *oldhtp;
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{
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struct hashbuf *htp;
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struct namebuf *np, *nnp, **hp;
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int n, newsize;
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if (oldhtp == NULL)
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newsize = hashsizes[0];
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else {
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for (n = 0; (newsize = hashsizes[n++]) != 0; (void)NULL)
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if (oldhtp->h_size == newsize) {
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newsize = hashsizes[n];
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break;
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}
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if (newsize == 0)
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newsize = oldhtp->h_size * 2 + 1;
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}
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ns_debug(ns_log_db, 4, "savehash GROWING to %d", newsize);
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htp = (struct hashbuf *) memget(HASHSIZE(newsize));
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if (htp == NULL)
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ns_panic(ns_log_db, 0, "savehash: %s", strerror(errno));
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htp->h_size = newsize;
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memset(htp->h_tab, 0, newsize * sizeof(struct namebuf *));
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if (oldhtp == NULL) {
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htp->h_cnt = 0;
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return (htp);
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}
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ns_debug(ns_log_db, 4, "savehash(%#lx) cnt=%d, sz=%d, newsz=%d",
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(u_long)oldhtp, oldhtp->h_cnt, oldhtp->h_size, newsize);
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htp->h_cnt = oldhtp->h_cnt;
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for (n = 0; n < oldhtp->h_size; n++) {
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for (np = oldhtp->h_tab[n]; np != NULL; np = nnp) {
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nnp = np->n_next;
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hp = &htp->h_tab[np->n_hashval % htp->h_size];
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np->n_next = *hp;
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*hp = np;
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}
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}
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oldhtp->h_cnt = 0; /* Keep rm_hash() happy. */
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rm_hash(oldhtp);
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return (htp);
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}
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