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1219 lines
27 KiB
C
1219 lines
27 KiB
C
#if !defined(lint) && !defined(SABER)
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static char sccsid[] = "@(#)db_load.c 4.38 (Berkeley) 3/2/91";
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static char rcsid[] = "$Id: db_load.c,v 1.2 1994/09/22 20:45:03 pst Exp $";
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#endif /* not lint */
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/*
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* ++Copyright++ 1986, 1988, 1990
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* -
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* Copyright (c) 1986, 1988, 1990
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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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* 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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* --Copyright--
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*/
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/*
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* Load data base from ascii backupfile. Format similar to RFC 883.
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*/
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#include <sys/param.h>
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#include <sys/stat.h>
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#include <netinet/in.h>
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#include <netiso/iso.h>
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#include <arpa/nameser.h>
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#include <arpa/inet.h>
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#include <stdio.h>
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#include <syslog.h>
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#include <ctype.h>
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#include <netdb.h>
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#include "named.h"
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static int gettoken __P((register FILE *, char *)),
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getnonblank __P((FILE *, char *)),
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getprotocol __P((FILE *, char *)),
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getservices __P((int, char *, FILE *, char *));
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static void makename __P((char *, char *));
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static int empty_token = 0;
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/*
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* Map class and type names to number
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*/
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struct map {
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char token[8];
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int val;
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};
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struct map m_class[] = {
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"in", C_IN,
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#ifdef notdef
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"any", C_ANY, /* any is a QCLASS, not CLASS */
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#endif
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"chaos", C_CHAOS,
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"hs", C_HS,
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};
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#define NCLASS (sizeof(m_class) / sizeof(struct map))
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struct map m_type[] = {
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"a", T_A,
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"ns", T_NS,
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"cname", T_CNAME,
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"soa", T_SOA,
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"mb", T_MB,
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"mg", T_MG,
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"mr", T_MR,
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"null", T_NULL,
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"wks", T_WKS,
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"ptr", T_PTR,
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"hinfo", T_HINFO,
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"minfo", T_MINFO,
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"mx", T_MX,
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"uinfo", T_UINFO,
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"txt", T_TXT,
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"rp", T_RP,
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"afsdb", T_AFSDB,
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"x25", T_X25,
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"isdn", T_ISDN,
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"rt", T_RT,
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"nsap", T_NSAP,
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"uid", T_UID,
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"gid", T_GID,
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#ifdef notdef
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"any", T_ANY, /* any is a QTYPE, not TYPE */
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#endif
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#ifdef ALLOW_T_UNSPEC
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"unspec", T_UNSPEC,
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#endif /* ALLOW_T_UNSPEC */
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};
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#define NTYPE (sizeof(m_type) / sizeof(struct map))
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/*
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* Parser token values
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*/
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#define CURRENT 1
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#define DOT 2
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#define AT 3
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#define DNAME 4
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#define INCLUDE 5
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#define ORIGIN 6
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#define ERROR 7
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static int clev; /* a zone deeper in a heirachy has more credability */
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/* int
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* db_load(filename, in_origin, zp, doinginclude)
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* load a database from `filename' into zone `zp'. append `origin'
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* to all nonterminal domain names in the file. `doinginclude' is
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* true if this is a $INCLUDE file.
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* returns:
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* -1 = can't open file
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* 0 = success
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* >0 = number of errors encountered
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*/
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int
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db_load(filename, in_origin, zp, doinginclude)
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char *filename, *in_origin;
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struct zoneinfo *zp;
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int doinginclude;
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{
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register char *cp;
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register struct map *mp;
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char domain[MAXDNAME];
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char origin[MAXDNAME];
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char tmporigin[MAXDNAME];
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char buf[MAXDATA];
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char data[MAXDATA];
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char *cp1;
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char *op;
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int c, class, type, ttl, dbflags, dataflags, multiline;
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static int read_soa; /* number of soa's read */
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struct databuf *dp;
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struct iso_addr *isoa;
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FILE *fp;
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int slineno, i, errs = 0, didinclude = 0;
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register u_int32_t n;
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struct stat sb;
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struct in_addr ina;
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if (!doinginclude) {
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read_soa = 0;
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clev = db_getclev(in_origin);
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}
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dprintf(1, (ddt,"db_load(%s, %s, %d, %d)\n",
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filename, in_origin, zp - zones, doinginclude));
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(void) strcpy(origin, in_origin);
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if ((fp = fopen(filename, "r")) == NULL) {
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syslog(LOG_ERR, "%s: %m", filename);
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dprintf(1, (ddt, "db_load: error opening file %s\n",
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filename));
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return (-1);
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}
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if (zp->z_type == Z_CACHE) {
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dbflags = DB_NODATA | DB_NOHINTS;
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dataflags = DB_F_HINT;
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} else {
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dbflags = DB_NODATA;
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dataflags = 0;
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}
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gettime(&tt);
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if (fstat(fileno(fp), &sb) < 0) {
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syslog(LOG_ERR, "%s: %m", filename);
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sb.st_mtime = (int)tt.tv_sec;
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}
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slineno = lineno;
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lineno = 1;
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domain[0] = '\0';
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class = zp->z_class;
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zp->z_flags &= ~(Z_INCLUDE|Z_DB_BAD);
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while ((c = gettoken(fp, filename)) != EOF) {
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switch (c) {
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case INCLUDE:
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if (!getword((char *)buf, sizeof(buf), fp))
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/* file name*/
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break;
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if (!getword(tmporigin, sizeof(tmporigin), fp))
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strcpy(tmporigin, origin);
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else {
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makename(tmporigin, origin);
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endline(fp);
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}
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didinclude = 1;
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errs += db_load((char *)buf, tmporigin, zp, 1);
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continue;
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case ORIGIN:
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(void) strcpy((char *)buf, origin);
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if (!getword(origin, sizeof(origin), fp))
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break;
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dprintf(3, (ddt, "db_load: origin %s, buf %s\n",
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origin, buf));
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makename(origin, buf);
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dprintf(3, (ddt, "db_load: origin now %s\n", origin));
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continue;
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case DNAME:
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if (!getword(domain, sizeof(domain), fp))
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break;
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n = strlen(domain) - 1;
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if (domain[n] == '.')
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domain[n] = '\0';
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else if (*origin) {
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(void) strcat(domain, ".");
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(void) strcat(domain, origin);
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}
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goto gotdomain;
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case AT:
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(void) strcpy(domain, origin);
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goto gotdomain;
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case DOT:
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domain[0] = '\0';
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/* fall thru ... */
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case CURRENT:
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gotdomain:
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if (!getword((char *)buf, sizeof(buf), fp)) {
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if (c == CURRENT)
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continue;
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break;
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}
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cp = buf;
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ttl = 0;
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if (isdigit(*cp)) {
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n = 0;
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do {
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if (n > (INT_MAX - (*cp - '0')) / 10) {
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syslog(LOG_ERR,
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"%s: line %d: number > %lu\n",
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filename, lineno, INT_MAX);
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dprintf(1, (ddt,
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"%s: line %d: number > %lu\n",
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filename, lineno, INT_MAX));
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n = INT_MAX;
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cp++;
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} else
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n = n * 10 + (*cp++ - '0');
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}
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while (isdigit(*cp));
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if (zp->z_type == Z_CACHE) {
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/* this allows the cache entry to age */
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/* while sitting on disk (powered off) */
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if (n > max_cache_ttl)
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n = max_cache_ttl;
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n += sb.st_mtime;
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}
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ttl = n;
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if (!getword((char *)buf, sizeof(buf), fp))
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break;
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}
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for (mp = m_class; mp < m_class+NCLASS; mp++)
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if (!strcasecmp((char *)buf, mp->token)) {
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class = mp->val;
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(void) getword((char *)buf,
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sizeof(buf), fp);
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break;
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}
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for (mp = m_type; mp < m_type+NTYPE; mp++)
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if (!strcasecmp((char *)buf, mp->token)) {
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type = mp->val;
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goto fndtype;
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}
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dprintf(1, (ddt, "%s: Line %d: Unknown type: %s.\n",
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filename, lineno, buf));
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errs++;
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syslog(LOG_ERR, "%s: Line %d: Unknown type: %s.\n",
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filename, lineno, buf);
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break;
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fndtype:
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#ifdef ALLOW_T_UNSPEC
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/* Don't do anything here for T_UNSPEC...
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* read input separately later
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*/
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if (type != T_UNSPEC) {
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#endif
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if (!getword((char *)buf, sizeof(buf), fp))
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break;
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dprintf(3,
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(ddt,
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"d='%s', c=%d, t=%d, ttl=%d, data='%s'\n",
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domain, class, type, ttl, buf));
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#ifdef ALLOW_T_UNSPEC
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}
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#endif
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/*
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* Convert the ascii data 'buf' to the proper format
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* based on the type and pack into 'data'.
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*/
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switch (type) {
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case T_A:
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if (!inet_aton(buf, &ina))
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goto err;
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n = ntohl(ina.s_addr);
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cp = data;
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PUTLONG(n, cp);
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n = INT32SZ;
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break;
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|
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case T_HINFO:
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case T_ISDN:
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n = strlen((char *)buf);
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if (n > 255) {
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syslog(LOG_WARNING,
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"%s: line %d: CPU type too long",
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filename, lineno);
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n = 255;
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}
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data[0] = n;
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bcopy(buf, (char *)data + 1, (int)n);
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if (n == 0)
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goto err;
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n++;
|
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if (!getword((char *)buf, sizeof(buf), fp))
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i = 0;
|
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else {
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endline(fp);
|
|
i = strlen((char *)buf);
|
|
}
|
|
if (i == 0) {
|
|
/* goto err; */
|
|
/* XXX tolerate for now */
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data[n++] = 1;
|
|
data[n++] = '?';
|
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break;
|
|
}
|
|
if (i > 255) {
|
|
syslog(LOG_WARNING,
|
|
"%s:%d: OS type too long",
|
|
filename, lineno);
|
|
i = 255;
|
|
}
|
|
data[n] = i;
|
|
bcopy(buf, data + n + 1, i);
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n += i + 1;
|
|
break;
|
|
|
|
case T_SOA:
|
|
case T_MINFO:
|
|
case T_RP:
|
|
(void) strcpy((char *)data, (char *)buf);
|
|
makename(data, origin);
|
|
cp = data + strlen((char *)data) + 1;
|
|
if (!getword((char *)cp,
|
|
sizeof(data) - (cp - data), fp))
|
|
goto err;
|
|
makename(cp, origin);
|
|
cp += strlen((char *)cp) + 1;
|
|
if (type != T_SOA) {
|
|
n = cp - data;
|
|
break;
|
|
}
|
|
if (class != zp->z_class) {
|
|
syslog(LOG_WARNING,
|
|
"%s:%d: %s",
|
|
filename, lineno,
|
|
"SOA class not same as zone's");
|
|
}
|
|
c = getnonblank(fp, filename);
|
|
if (c == '(') {
|
|
multiline = 1;
|
|
} else {
|
|
multiline = 0;
|
|
ungetc(c, fp);
|
|
}
|
|
zp->z_serial = getnum(fp, filename, 1);
|
|
n = (u_int32_t) zp->z_serial;
|
|
PUTLONG(n, cp);
|
|
zp->z_refresh = getnum(fp, filename, 0);
|
|
n = (u_int32_t) zp->z_refresh;
|
|
PUTLONG(n, cp);
|
|
if (zp->z_type == Z_SECONDARY
|
|
#if defined(STUBS)
|
|
|| zp->z_type == Z_STUB
|
|
#endif
|
|
) {
|
|
zp->z_time = sb.st_mtime
|
|
+ zp->z_refresh;
|
|
}
|
|
zp->z_retry = getnum(fp, filename, 0);
|
|
n = (u_int32_t) zp->z_retry;
|
|
PUTLONG(n, cp);
|
|
zp->z_expire = getnum(fp, filename, 0);
|
|
n = (u_int32_t) zp->z_expire;
|
|
PUTLONG (n, cp);
|
|
zp->z_minimum = getnum(fp, filename, 0);
|
|
n = (u_int32_t) zp->z_minimum;
|
|
PUTLONG (n, cp);
|
|
n = cp - data;
|
|
if (multiline) {
|
|
if (getnonblank(fp, filename) != ')')
|
|
goto err;
|
|
}
|
|
read_soa++;
|
|
endline(fp);
|
|
break;
|
|
|
|
case T_UID:
|
|
case T_GID:
|
|
n = 0;
|
|
cp = buf;
|
|
while (isdigit(*cp))
|
|
n = n * 10 + (*cp++ - '0');
|
|
if (cp == buf)
|
|
goto err;
|
|
cp = data;
|
|
PUTLONG(n, cp);
|
|
n = INT32SZ;
|
|
break;
|
|
|
|
case T_WKS:
|
|
/* Address */
|
|
if (!inet_aton(buf, &ina))
|
|
goto err;
|
|
n = ntohl(ina.s_addr);
|
|
cp = data;
|
|
PUTLONG(n, cp);
|
|
*cp = (char)getprotocol(fp, filename);
|
|
/* Protocol */
|
|
n = INT32SZ + sizeof(char);
|
|
/* Services */
|
|
n = getservices((int)n, data, fp, filename);
|
|
break;
|
|
|
|
case T_NS:
|
|
case T_CNAME:
|
|
case T_MB:
|
|
case T_MG:
|
|
case T_MR:
|
|
case T_PTR:
|
|
(void) strcpy((char *)data, (char *)buf);
|
|
makename(data, origin);
|
|
n = strlen((char *)data) + 1;
|
|
break;
|
|
|
|
case T_UINFO:
|
|
cp = strchr((char *)buf, '&');
|
|
bzero(data, sizeof(data));
|
|
if ( cp != NULL) {
|
|
(void) strncpy((char *)data,
|
|
(char *)buf, cp - buf);
|
|
op = strchr(domain, '.');
|
|
if ( op != NULL)
|
|
(void) strncat((char *)data,
|
|
domain,op-domain);
|
|
else
|
|
(void) strcat((char *)data,
|
|
domain);
|
|
(void) strcat((char *)data,
|
|
(char *)++cp);
|
|
} else
|
|
(void) strcpy((char *)data,
|
|
(char *)buf);
|
|
n = strlen((char *)data) + 1;
|
|
break;
|
|
case T_MX:
|
|
case T_AFSDB:
|
|
case T_RT:
|
|
n = 0;
|
|
cp = buf;
|
|
while (isdigit(*cp))
|
|
n = n * 10 + (*cp++ - '0');
|
|
/* catch bad values */
|
|
if ((cp == buf) || (n > 65535))
|
|
goto err;
|
|
|
|
cp = data;
|
|
PUTSHORT((u_int16_t)n, cp);
|
|
|
|
if (!getword((char *)buf, sizeof(buf), fp))
|
|
goto err;
|
|
(void) strcpy((char *)cp, (char *)buf);
|
|
makename(cp, origin);
|
|
/* advance pointer to end of data */
|
|
cp += strlen((char *)cp) +1;
|
|
|
|
/* now save length */
|
|
n = (cp - data);
|
|
break;
|
|
|
|
case T_TXT:
|
|
case T_X25:
|
|
cp = buf + (n = strlen(buf));
|
|
while ((i = getc(fp), *cp = i, i != EOF)
|
|
&& *cp != '\n'
|
|
&& (n < MAXDATA)) {
|
|
cp++; n++;
|
|
}
|
|
if (*cp == '\n') /* leave \n for getword */
|
|
ungetc(*cp, fp);
|
|
*cp = '\0';
|
|
/* now do normal processing */
|
|
|
|
i = strlen((char *)buf);
|
|
cp = data;
|
|
cp1 = buf;
|
|
/*
|
|
* there is expansion here so make sure we
|
|
* don't overflow data
|
|
*/
|
|
if (i > sizeof(data) * 255 / 256) {
|
|
syslog(LOG_WARNING,
|
|
"%s: line %d: TXT record truncated",
|
|
filename, lineno);
|
|
i = sizeof(data) * 255 / 256;
|
|
}
|
|
while (i > 255) {
|
|
*cp++ = 255;
|
|
bcopy(cp1, cp, 255);
|
|
cp += 255;
|
|
cp1 += 255;
|
|
i -= 255;
|
|
}
|
|
*cp++ = i;
|
|
bcopy(cp1, cp, i);
|
|
cp += i;
|
|
n = cp - data;
|
|
endline(fp);
|
|
break;
|
|
|
|
case T_NSAP:
|
|
isoa = iso_addr(buf);
|
|
if (!isoa)
|
|
goto err;
|
|
n = isoa->isoa_len;
|
|
bcopy(isoa->isoa_genaddr, data, n);
|
|
endline(fp);
|
|
break;
|
|
#ifdef ALLOW_T_UNSPEC
|
|
case T_UNSPEC:
|
|
{
|
|
int rcode;
|
|
fgets(buf, sizeof(buf), fp);
|
|
dprintf(1, (ddt, "loading T_UNSPEC\n"));
|
|
if (rcode = atob(buf,
|
|
strlen((char*)buf),
|
|
data, sizeof(data),
|
|
&n)) {
|
|
if (rcode == CONV_OVERFLOW) {
|
|
dprintf(1,
|
|
(ddt,
|
|
"Load T_UNSPEC: input buffer overflow\n"
|
|
)
|
|
);
|
|
errs++;
|
|
syslog(LOG_ERR,
|
|
"Load T_UNSPEC: input buffer overflow");
|
|
} else {
|
|
dprintf(1,
|
|
(ddt,
|
|
"Load T_UNSPEC: Data in bad atob format\n"
|
|
)
|
|
);
|
|
errs++;
|
|
syslog(LOG_ERR,
|
|
"Load T_UNSPEC: Data in bad atob format");
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
#endif /* ALLOW_T_UNSPEC */
|
|
|
|
default:
|
|
goto err;
|
|
}
|
|
#ifdef STUBS
|
|
if (type == T_SOA && zp->z_type == Z_STUB)
|
|
continue;
|
|
#endif
|
|
#ifdef NO_GLUE
|
|
/*
|
|
* Ignore data outside the zone.
|
|
*/
|
|
if (zp->z_type != Z_CACHE &&
|
|
!samedomain(domain, zp->z_origin))
|
|
{
|
|
syslog(LOG_WARNING,
|
|
"%s:%d: data \"%s\" outside zone \"%s\" (ignored)",
|
|
filename, lineno, domain, zp->z_origin);
|
|
continue;
|
|
}
|
|
#endif /*NO_GLUE*/
|
|
|
|
dp = savedata(class, type, (u_int32_t)ttl,
|
|
(u_char *)data, (int)n);
|
|
dp->d_zone = zp - zones;
|
|
dp->d_flags = dataflags;
|
|
dp->d_cred = DB_C_ZONE;
|
|
dp->d_clev = clev;
|
|
if ((c = db_update(domain, dp, dp, dbflags,
|
|
(zp->z_type == Z_CACHE)
|
|
? fcachetab
|
|
: hashtab))
|
|
!= OK) {
|
|
#ifdef DEBUG
|
|
if (debug && (c != DATAEXISTS))
|
|
fprintf(ddt, "update failed %s %d\n",
|
|
domain, type);
|
|
#endif
|
|
free((char*) dp);
|
|
}
|
|
continue;
|
|
|
|
case ERROR:
|
|
break;
|
|
}
|
|
err:
|
|
errs++;
|
|
syslog(LOG_ERR, "%s: line %d: database format error (%s)",
|
|
filename, empty_token ? (lineno - 1) : lineno, buf);
|
|
dprintf(1, (ddt,
|
|
"%s: line %d: database format error ('%s', %d)\n",
|
|
filename, empty_token ? (lineno - 1) : lineno,
|
|
buf, n));
|
|
while ((c = getc(fp)) != EOF && c != '\n')
|
|
;
|
|
if (c == '\n')
|
|
lineno++;
|
|
}
|
|
(void) my_fclose(fp);
|
|
lineno = slineno;
|
|
if (doinginclude == 0) {
|
|
if (didinclude) {
|
|
zp->z_flags |= Z_INCLUDE;
|
|
zp->z_ftime = 0;
|
|
} else
|
|
zp->z_ftime = sb.st_mtime;
|
|
zp->z_lastupdate = sb.st_mtime;
|
|
if (zp->z_type != Z_CACHE && read_soa != 1) {
|
|
errs++;
|
|
if (read_soa == 0)
|
|
syslog(LOG_ERR, "%s: no SOA record", filename);
|
|
else
|
|
syslog(LOG_ERR, "%s: multiple SOA records",
|
|
filename);
|
|
}
|
|
}
|
|
#ifdef SECURE_ZONES
|
|
build_secure_netlist(zp);
|
|
#endif
|
|
if (errs)
|
|
zp->z_flags |= Z_DB_BAD;
|
|
return (errs);
|
|
}
|
|
|
|
static int
|
|
gettoken(fp, src)
|
|
register FILE *fp;
|
|
char *src;
|
|
{
|
|
register int c;
|
|
char op[32];
|
|
|
|
for (;;) {
|
|
c = getc(fp);
|
|
top:
|
|
switch (c) {
|
|
case EOF:
|
|
return (EOF);
|
|
|
|
case '$':
|
|
if (getword(op, sizeof(op), fp)) {
|
|
if (!strcasecmp("include", op))
|
|
return (INCLUDE);
|
|
if (!strcasecmp("origin", op))
|
|
return (ORIGIN);
|
|
}
|
|
dprintf(1, (ddt,
|
|
"%s: line %d: Unknown $ option: $%s\n",
|
|
src, lineno, op));
|
|
syslog(LOG_ERR,"%s: line %d: Unknown $ option: $%s\n",
|
|
src, lineno, op);
|
|
return (ERROR);
|
|
|
|
case ';':
|
|
while ((c = getc(fp)) != EOF && c != '\n')
|
|
;
|
|
goto top;
|
|
|
|
case ' ':
|
|
case '\t':
|
|
return (CURRENT);
|
|
|
|
case '.':
|
|
return (DOT);
|
|
|
|
case '@':
|
|
return (AT);
|
|
|
|
case '\n':
|
|
lineno++;
|
|
continue;
|
|
|
|
default:
|
|
(void) ungetc(c, fp);
|
|
return (DNAME);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* int
|
|
* getword(buf, size, fp)
|
|
* get next word, skipping blanks & comments.
|
|
* parameters:
|
|
* buf - destination
|
|
* size - of destination
|
|
* fp - file to read from
|
|
* return value:
|
|
* 0 = no word; perhaps EOL or EOF
|
|
* 1 = word was read
|
|
*/
|
|
int
|
|
getword(buf, size, fp)
|
|
char *buf;
|
|
int size;
|
|
FILE *fp;
|
|
{
|
|
register char *cp;
|
|
register int c;
|
|
|
|
empty_token = 0;
|
|
for (cp = buf; (c = getc(fp)) != EOF; ) {
|
|
if (c == ';') {
|
|
while ((c = getc(fp)) != EOF && c != '\n')
|
|
;
|
|
c = '\n';
|
|
}
|
|
if (c == '\n') {
|
|
if (cp != buf)
|
|
ungetc(c, fp);
|
|
else
|
|
lineno++;
|
|
break;
|
|
}
|
|
if (isspace(c)) {
|
|
while (isspace(c = getc(fp)) && c != '\n')
|
|
;
|
|
ungetc(c, fp);
|
|
if (cp != buf) /* Trailing whitespace */
|
|
break;
|
|
continue; /* Leading whitespace */
|
|
}
|
|
if (c == '"') {
|
|
while ((c = getc(fp)) != EOF && c != '"' && c != '\n') {
|
|
if (c == '\\') {
|
|
if ((c = getc(fp)) == EOF)
|
|
c = '\\';
|
|
if (c == '\n')
|
|
lineno++;
|
|
}
|
|
if (cp >= buf+size-1)
|
|
break;
|
|
*cp++ = c;
|
|
}
|
|
if (c == '\n') {
|
|
lineno++;
|
|
break;
|
|
}
|
|
if ((c = getc(fp)) != EOF)
|
|
ungetc(c, fp);
|
|
if (c == EOF || isspace(c) || c == '\n') {
|
|
*cp = '\0';
|
|
return (1);
|
|
}
|
|
else
|
|
continue;
|
|
}
|
|
if (c == '\\') {
|
|
if ((c = getc(fp)) == EOF)
|
|
c = '\\';
|
|
if (c == '\n')
|
|
lineno++;
|
|
}
|
|
if (cp >= buf+size-1)
|
|
break;
|
|
*cp++ = (char)c;
|
|
}
|
|
*cp = '\0';
|
|
if (cp == buf)
|
|
empty_token = 1;
|
|
return (cp != buf);
|
|
}
|
|
|
|
/*
|
|
From: kagotani@cs.titech.ac.jp
|
|
Message-Id: <9007040716.AA26646@saeko.cs.titech.ac.jp>
|
|
Subject: named bug report and fix
|
|
Date: Wed, 04 Jul 90 16:16:52 JST
|
|
|
|
I found a bug in the BIND source code. Named with this bug parses
|
|
the serial_no field of SOA records incorrectly. For example:
|
|
expression internal
|
|
in files expression I expect
|
|
1. 1000 10000
|
|
1.2 10002 10002
|
|
1.23 100023 10023
|
|
2.3 20003 20003
|
|
Especially I can not accept that "2.3" is treated as if it is
|
|
smaller than "1.23" in their internal expressions.
|
|
|
|
[ if you define SENSIBLE_DOTS in ../conf/options.h, you get
|
|
m. kagotani's expected behaviour. this is NOT compatible
|
|
with pre-4.9 versions of BIND. --vix ]
|
|
*/
|
|
|
|
int
|
|
getnum(fp, src, is_serial)
|
|
FILE *fp;
|
|
char *src;
|
|
int is_serial;
|
|
{
|
|
register int c, n;
|
|
int seendigit = 0;
|
|
int seendecimal = 0;
|
|
int m = 0;
|
|
int allow_dots = 0;
|
|
|
|
#ifdef DOTTED_SERIAL
|
|
allow_dots += is_serial;
|
|
#endif
|
|
for (n = 0; (c = getc(fp)) != EOF; ) {
|
|
if (isspace(c)) {
|
|
if (c == '\n')
|
|
lineno++;
|
|
if (seendigit)
|
|
break;
|
|
continue;
|
|
}
|
|
if (c == ';') {
|
|
while ((c = getc(fp)) != EOF && c != '\n')
|
|
;
|
|
if (c == '\n')
|
|
lineno++;
|
|
if (seendigit)
|
|
break;
|
|
continue;
|
|
}
|
|
if (!isdigit(c)) {
|
|
if (c == ')' && seendigit) {
|
|
(void) ungetc(c, fp);
|
|
break;
|
|
}
|
|
if (seendecimal || c != '.' || !allow_dots) {
|
|
syslog(LOG_ERR, "%s:%d: expected a number",
|
|
src, lineno);
|
|
dprintf(1, (ddt, "%s:%d: expected a number",
|
|
src, lineno));
|
|
exit(1); /* XXX why exit here?? */
|
|
} else {
|
|
if (!seendigit)
|
|
n = 1;
|
|
#ifdef SENSIBLE_DOTS
|
|
n = n * 10000;
|
|
#else
|
|
n = n * 1000;
|
|
#endif
|
|
seendigit = 1;
|
|
seendecimal = 1;
|
|
}
|
|
continue;
|
|
}
|
|
#ifdef SENSIBLE_DOTS
|
|
if (seendecimal)
|
|
m = m * 10 + (c - '0');
|
|
else
|
|
n = n * 10 + (c - '0');
|
|
#else
|
|
n = n * 10 + (c - '0');
|
|
#endif
|
|
seendigit = 1;
|
|
}
|
|
if (m > 9999) {
|
|
syslog(LOG_ERR,
|
|
"%s:%d: number after the decimal point exceeds 9999",
|
|
src, lineno);
|
|
dprintf(1, (ddt,
|
|
"%s:%d: number after the decimal point exceeds 9999",
|
|
src, lineno));
|
|
exit(1); /* XXX why exit here?? */
|
|
}
|
|
if (seendecimal) {
|
|
syslog(LOG_INFO,
|
|
"%s:%d: decimal serial number interpreted as %d",
|
|
src, lineno, n+m);
|
|
}
|
|
return (n + m);
|
|
}
|
|
|
|
static int
|
|
getnonblank(fp, src)
|
|
FILE *fp;
|
|
char *src;
|
|
{
|
|
register int c;
|
|
|
|
while ( (c = getc(fp)) != EOF ) {
|
|
if (isspace(c)) {
|
|
if (c == '\n')
|
|
lineno++;
|
|
continue;
|
|
}
|
|
if (c == ';') {
|
|
while ((c = getc(fp)) != EOF && c != '\n')
|
|
;
|
|
if (c == '\n')
|
|
lineno++;
|
|
continue;
|
|
}
|
|
return(c);
|
|
}
|
|
syslog(LOG_ERR, "%s: line %d: unexpected EOF", src, lineno);
|
|
dprintf(1, (ddt, "%s: line %d: unexpected EOF", src, lineno));
|
|
return (EOF);
|
|
}
|
|
|
|
/*
|
|
* Take name and fix it according to following rules:
|
|
* "." means root.
|
|
* "@" means current origin.
|
|
* "name." means no changes.
|
|
* "name" means append origin.
|
|
*/
|
|
static void
|
|
makename(name, origin)
|
|
char *name, *origin;
|
|
{
|
|
int n;
|
|
|
|
if (origin[0] == '.')
|
|
origin++;
|
|
n = strlen(name);
|
|
if (n == 1) {
|
|
if (name[0] == '.') {
|
|
name[0] = '\0';
|
|
return;
|
|
}
|
|
if (name[0] == '@') {
|
|
(void) strcpy(name, origin);
|
|
return;
|
|
}
|
|
}
|
|
if (n > 0) {
|
|
if (name[n - 1] == '.')
|
|
name[n - 1] = '\0';
|
|
else if (origin[0] != '\0') {
|
|
name[n] = '.';
|
|
(void) strcpy(name + n + 1, origin);
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
endline(fp)
|
|
register FILE *fp;
|
|
{
|
|
register int c;
|
|
|
|
while (c = getc(fp)) {
|
|
if (c == '\n') {
|
|
(void) ungetc(c,fp);
|
|
break;
|
|
} else if (c == EOF) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
#define MAXPORT 256
|
|
#define MAXLEN 24
|
|
|
|
static int
|
|
getprotocol(fp, src)
|
|
FILE *fp;
|
|
char *src;
|
|
{
|
|
int k;
|
|
char b[MAXLEN];
|
|
|
|
(void) getword(b, sizeof(b), fp);
|
|
|
|
k = protocolnumber(b);
|
|
if(k == -1)
|
|
syslog(LOG_ERR, "%s: line %d: unknown protocol: %s.",
|
|
src, lineno, b);
|
|
return(k);
|
|
}
|
|
|
|
static int
|
|
getservices(n, data, fp, src)
|
|
int n;
|
|
char *data, *src;
|
|
FILE *fp;
|
|
{
|
|
int j, ch;
|
|
int k;
|
|
int maxl;
|
|
int bracket;
|
|
char b[MAXLEN];
|
|
char bm[MAXPORT/8];
|
|
|
|
for (j = 0; j < MAXPORT/8; j++)
|
|
bm[j] = 0;
|
|
maxl = 0;
|
|
bracket = 0;
|
|
while (getword(b, sizeof(b), fp) || bracket) {
|
|
if (feof(fp) || ferror(fp))
|
|
break;
|
|
if (strlen(b) == 0)
|
|
continue;
|
|
if ( b[0] == '(') {
|
|
bracket++;
|
|
continue;
|
|
}
|
|
if ( b[0] == ')') {
|
|
bracket = 0;
|
|
while ((ch = getc(fp)) != EOF && ch != '\n')
|
|
;
|
|
if (ch == '\n')
|
|
lineno++;
|
|
break;
|
|
}
|
|
k = servicenumber(b);
|
|
if (k == -1) {
|
|
syslog(LOG_WARNING,
|
|
"%s: line %d: Unknown service '%s'",
|
|
src, lineno, b);
|
|
continue;
|
|
}
|
|
if ((k < MAXPORT) && (k)) {
|
|
bm[k/8] |= (0x80>>(k%8));
|
|
if (k > maxl)
|
|
maxl=k;
|
|
}
|
|
else {
|
|
syslog(LOG_WARNING,
|
|
"%s: line %d: port no. (%d) too big\n",
|
|
src, lineno, k);
|
|
dprintf(1, (ddt,
|
|
"%s: line %d: port no. (%d) too big\n",
|
|
src, lineno, k));
|
|
}
|
|
}
|
|
if (bracket)
|
|
syslog(LOG_WARNING, "%s: line %d: missing close paren\n",
|
|
src, lineno);
|
|
maxl = maxl/8+1;
|
|
bcopy(bm, data+n, maxl);
|
|
return(maxl+n);
|
|
}
|
|
|
|
/* get_netlist(fp, netlistp, allow)
|
|
* get list of nets from 'fp', put on *netlistp, 'allow' controls
|
|
* whether hosts, nets, or both shall be accepted without warnings.
|
|
* (note that they are always accepted; 'allow' just controls the
|
|
* warnings.)
|
|
*/
|
|
void
|
|
get_netlist(fp, netlistp, allow, print_tag)
|
|
FILE *fp;
|
|
struct netinfo **netlistp;
|
|
int allow;
|
|
char *print_tag;
|
|
{
|
|
struct netinfo *ntp = NULL, **end = netlistp;
|
|
char buf[BUFSIZ], *maskp;
|
|
struct in_addr ina;
|
|
|
|
dprintf(1, (ddt, "get_netlist(%s)", print_tag));
|
|
while (getword(buf, sizeof(buf), fp)) {
|
|
if (strlen(buf) == 0)
|
|
break;
|
|
if ((maskp = strchr(buf, '&')) != NULL)
|
|
*maskp++ = '\0';
|
|
dprintf(1, (ddt," %s", buf));
|
|
if (ntp == NULL) {
|
|
ntp = (struct netinfo *)malloc(sizeof(struct netinfo));
|
|
}
|
|
if (!inet_aton(buf, &ntp->my_addr)) {
|
|
syslog(LOG_ERR, "%s contains bogus element (%s)",
|
|
print_tag, buf);
|
|
continue;
|
|
}
|
|
if (maskp) {
|
|
if (!inet_aton(maskp, &ina)) {
|
|
syslog(LOG_ERR,
|
|
"%s element %s has bad mask (%s)",
|
|
print_tag, buf, maskp);
|
|
continue;
|
|
}
|
|
} else {
|
|
if (allow & ALLOW_HOSTS)
|
|
ina.s_addr = 0xffffffff; /* "exact" */
|
|
else
|
|
ina.s_addr = net_mask(ntp->my_addr);
|
|
}
|
|
ntp->next = NULL;
|
|
ntp->mask = ina.s_addr;
|
|
ntp->addr = ntp->my_addr.s_addr & ntp->mask;
|
|
|
|
/* Check for duplicates */
|
|
if (addr_on_netlist(ntp->my_addr, *netlistp))
|
|
continue;
|
|
|
|
if (ntp->addr != ntp->my_addr.s_addr) {
|
|
ina.s_addr = ntp->addr;
|
|
syslog(LOG_WARNING,
|
|
"%s element (%s) mask problem (%s)",
|
|
print_tag, buf, inet_ntoa(ina));
|
|
}
|
|
|
|
*end = ntp;
|
|
end = &ntp->next;
|
|
ntp = NULL;
|
|
}
|
|
if (ntp)
|
|
free((char *)ntp);
|
|
|
|
dprintf(1, (ddt, "\n"));
|
|
#ifdef DEBUG
|
|
if (debug > 2)
|
|
for (ntp = *netlistp; ntp != NULL; ntp = ntp->next) {
|
|
fprintf(ddt, "ntp x%x addr x%x mask x%x",
|
|
ntp, ntp->addr, ntp->mask);
|
|
fprintf(ddt, " my_addr x%x", ntp->my_addr);
|
|
fprintf(ddt, " %s", inet_ntoa(ntp->my_addr));
|
|
fprintf(ddt, " next x%x\n", ntp->next);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
struct netinfo *
|
|
addr_on_netlist(addr, netlist)
|
|
struct in_addr addr;
|
|
struct netinfo *netlist;
|
|
{
|
|
u_int32_t a = addr.s_addr;
|
|
struct netinfo *t;
|
|
|
|
for (t = netlist; t != NULL; t = t->next)
|
|
if (t->addr == (a & t->mask))
|
|
return t;
|
|
return NULL;
|
|
}
|
|
|
|
int
|
|
position_on_netlist(addr, netlist)
|
|
struct in_addr addr;
|
|
struct netinfo *netlist;
|
|
{
|
|
u_int32_t a = addr.s_addr;
|
|
struct netinfo *t;
|
|
int position = 0;
|
|
|
|
for (t = netlist; t != NULL; t = t->next)
|
|
if (t->addr == (a & t->mask))
|
|
break;
|
|
else
|
|
position++;
|
|
return position;
|
|
}
|
|
|
|
void
|
|
free_netlist(netlistp)
|
|
struct netinfo **netlistp;
|
|
{
|
|
register struct netinfo *ntp, *next;
|
|
|
|
for (ntp = *netlistp; ntp != NULL; ntp = next) {
|
|
next = ntp->next;
|
|
free((char *)ntp);
|
|
}
|
|
*netlistp = NULL;
|
|
}
|