1164 lines
30 KiB
C
1164 lines
30 KiB
C
/*
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* Copyright (c) 1985
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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) 1995 by International Business Machines, Inc.
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*
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* International Business Machines, Inc. (hereinafter called IBM) grants
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* permission under its copyrights to use, copy, modify, and distribute this
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* Software with or without fee, provided that the above copyright notice and
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* all paragraphs of this notice appear in all copies, and that the name of IBM
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* not be used in connection with the marketing of any product incorporating
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* the Software or modifications thereof, without specific, written prior
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* permission.
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*
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* To the extent it has a right to do so, IBM grants an immunity from suit
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* under its patents, if any, for the use, sale or manufacture of products to
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* the extent that such products are used for performing Domain Name System
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* dynamic updates in TCP/IP networks by means of the Software. No immunity is
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* granted for any product per se or for any other function of any product.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", AND IBM DISCLAIMS ALL WARRANTIES,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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* PARTICULAR PURPOSE. IN NO EVENT SHALL IBM BE LIABLE FOR ANY SPECIAL,
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* DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER ARISING
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* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE, EVEN
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* IF IBM IS APPRISED OF THE POSSIBILITY OF SUCH DAMAGES.
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*/
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/*
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* Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
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* Portions Copyright (c) 1996-1999 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 ISC DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
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* OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#if defined(LIBC_SCCS) && !defined(lint)
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static const char sccsid[] = "@(#)res_debug.c 8.1 (Berkeley) 6/4/93";
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static const char rcsid[] = "$Id: res_debug.c,v 1.3.2.5.4.6 2005/07/28 07:43:22 marka Exp $";
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#endif /* LIBC_SCCS and not lint */
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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/inet.h>
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#include <arpa/nameser.h>
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#include <ctype.h>
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#include <errno.h>
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#include <math.h>
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#include <netdb.h>
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#include <resolv.h>
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#include <resolv_mt.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 <time.h>
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#include "port_after.h"
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#ifdef SPRINTF_CHAR
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# define SPRINTF(x) strlen(sprintf/**/x)
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#else
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# define SPRINTF(x) sprintf x
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#endif
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extern const char *_res_opcodes[];
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extern const char *_res_sectioncodes[];
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/*
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* Print the current options.
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*/
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void
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fp_resstat(const res_state statp, FILE *file) {
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u_long mask;
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fprintf(file, ";; res options:");
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for (mask = 1; mask != 0U; mask <<= 1)
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if (statp->options & mask)
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fprintf(file, " %s", p_option(mask));
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putc('\n', file);
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}
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static void
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do_section(const res_state statp,
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ns_msg *handle, ns_sect section,
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int pflag, FILE *file)
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{
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int n, sflag, rrnum;
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static int buflen = 2048;
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char *buf;
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ns_opcode opcode;
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ns_rr rr;
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/*
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* Print answer records.
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*/
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sflag = (statp->pfcode & pflag);
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if (statp->pfcode && !sflag)
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return;
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buf = malloc(buflen);
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if (buf == NULL) {
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fprintf(file, ";; memory allocation failure\n");
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return;
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}
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opcode = (ns_opcode) ns_msg_getflag(*handle, ns_f_opcode);
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rrnum = 0;
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for (;;) {
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if (ns_parserr(handle, section, rrnum, &rr)) {
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if (errno != ENODEV)
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fprintf(file, ";; ns_parserr: %s\n",
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strerror(errno));
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else if (rrnum > 0 && sflag != 0 &&
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(statp->pfcode & RES_PRF_HEAD1))
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putc('\n', file);
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goto cleanup;
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}
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if (rrnum == 0 && sflag != 0 && (statp->pfcode & RES_PRF_HEAD1))
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fprintf(file, ";; %s SECTION:\n",
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p_section(section, opcode));
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if (section == ns_s_qd)
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fprintf(file, ";;\t%s, type = %s, class = %s\n",
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ns_rr_name(rr),
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p_type(ns_rr_type(rr)),
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p_class(ns_rr_class(rr)));
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else if (section == ns_s_ar && ns_rr_type(rr) == ns_t_opt) {
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u_int32_t ttl = ns_rr_ttl(rr);
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fprintf(file,
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"; EDNS: version: %u, udp=%u, flags=%04x\n",
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(ttl>>16)&0xff, ns_rr_class(rr), ttl&0xffff);
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} else {
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n = ns_sprintrr(handle, &rr, NULL, NULL,
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buf, buflen);
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if (n < 0) {
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if (errno == ENOSPC) {
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free(buf);
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buf = NULL;
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if (buflen < 131072)
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buf = malloc(buflen += 1024);
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if (buf == NULL) {
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fprintf(file,
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";; memory allocation failure\n");
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return;
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}
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continue;
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}
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fprintf(file, ";; ns_sprintrr: %s\n",
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strerror(errno));
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goto cleanup;
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}
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fputs(buf, file);
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fputc('\n', file);
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}
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rrnum++;
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}
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cleanup:
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if (buf != NULL)
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free(buf);
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}
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/*
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* Print the contents of a query.
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* This is intended to be primarily a debugging routine.
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*/
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void
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res_pquery(const res_state statp, const u_char *msg, int len, FILE *file) {
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ns_msg handle;
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int qdcount, ancount, nscount, arcount;
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u_int opcode, rcode, id;
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if (ns_initparse(msg, len, &handle) < 0) {
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fprintf(file, ";; ns_initparse: %s\n", strerror(errno));
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return;
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}
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opcode = ns_msg_getflag(handle, ns_f_opcode);
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rcode = ns_msg_getflag(handle, ns_f_rcode);
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id = ns_msg_id(handle);
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qdcount = ns_msg_count(handle, ns_s_qd);
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ancount = ns_msg_count(handle, ns_s_an);
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nscount = ns_msg_count(handle, ns_s_ns);
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arcount = ns_msg_count(handle, ns_s_ar);
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/*
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* Print header fields.
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*/
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if ((!statp->pfcode) || (statp->pfcode & RES_PRF_HEADX) || rcode)
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fprintf(file,
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";; ->>HEADER<<- opcode: %s, status: %s, id: %d\n",
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_res_opcodes[opcode], p_rcode(rcode), id);
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if ((!statp->pfcode) || (statp->pfcode & RES_PRF_HEADX))
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putc(';', file);
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if ((!statp->pfcode) || (statp->pfcode & RES_PRF_HEAD2)) {
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fprintf(file, "; flags:");
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if (ns_msg_getflag(handle, ns_f_qr))
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fprintf(file, " qr");
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if (ns_msg_getflag(handle, ns_f_aa))
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fprintf(file, " aa");
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if (ns_msg_getflag(handle, ns_f_tc))
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fprintf(file, " tc");
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if (ns_msg_getflag(handle, ns_f_rd))
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fprintf(file, " rd");
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if (ns_msg_getflag(handle, ns_f_ra))
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fprintf(file, " ra");
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if (ns_msg_getflag(handle, ns_f_z))
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fprintf(file, " ??");
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if (ns_msg_getflag(handle, ns_f_ad))
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fprintf(file, " ad");
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if (ns_msg_getflag(handle, ns_f_cd))
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fprintf(file, " cd");
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}
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if ((!statp->pfcode) || (statp->pfcode & RES_PRF_HEAD1)) {
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fprintf(file, "; %s: %d",
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p_section(ns_s_qd, opcode), qdcount);
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fprintf(file, ", %s: %d",
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p_section(ns_s_an, opcode), ancount);
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fprintf(file, ", %s: %d",
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p_section(ns_s_ns, opcode), nscount);
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fprintf(file, ", %s: %d",
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p_section(ns_s_ar, opcode), arcount);
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}
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if ((!statp->pfcode) || (statp->pfcode &
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(RES_PRF_HEADX | RES_PRF_HEAD2 | RES_PRF_HEAD1))) {
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putc('\n',file);
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}
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/*
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* Print the various sections.
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*/
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do_section(statp, &handle, ns_s_qd, RES_PRF_QUES, file);
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do_section(statp, &handle, ns_s_an, RES_PRF_ANS, file);
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do_section(statp, &handle, ns_s_ns, RES_PRF_AUTH, file);
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do_section(statp, &handle, ns_s_ar, RES_PRF_ADD, file);
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if (qdcount == 0 && ancount == 0 &&
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nscount == 0 && arcount == 0)
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putc('\n', file);
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}
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const u_char *
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p_cdnname(const u_char *cp, const u_char *msg, int len, FILE *file) {
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char name[MAXDNAME];
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int n;
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if ((n = dn_expand(msg, msg + len, cp, name, sizeof name)) < 0)
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return (NULL);
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if (name[0] == '\0')
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putc('.', file);
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else
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fputs(name, file);
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return (cp + n);
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}
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const u_char *
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p_cdname(const u_char *cp, const u_char *msg, FILE *file) {
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return (p_cdnname(cp, msg, PACKETSZ, file));
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}
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/* Return a fully-qualified domain name from a compressed name (with
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length supplied). */
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const u_char *
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p_fqnname(cp, msg, msglen, name, namelen)
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const u_char *cp, *msg;
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int msglen;
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char *name;
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int namelen;
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{
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int n, newlen;
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if ((n = dn_expand(msg, cp + msglen, cp, name, namelen)) < 0)
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return (NULL);
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newlen = strlen(name);
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if (newlen == 0 || name[newlen - 1] != '.') {
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if (newlen + 1 >= namelen) /* Lack space for final dot */
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return (NULL);
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else
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strcpy(name + newlen, ".");
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}
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return (cp + n);
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}
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/* XXX: the rest of these functions need to become length-limited, too. */
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const u_char *
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p_fqname(const u_char *cp, const u_char *msg, FILE *file) {
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char name[MAXDNAME];
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const u_char *n;
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n = p_fqnname(cp, msg, MAXCDNAME, name, sizeof name);
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if (n == NULL)
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return (NULL);
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fputs(name, file);
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return (n);
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}
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/*
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* Names of RR classes and qclasses. Classes and qclasses are the same, except
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* that C_ANY is a qclass but not a class. (You can ask for records of class
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* C_ANY, but you can't have any records of that class in the database.)
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*/
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const struct res_sym __p_class_syms[] = {
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{C_IN, "IN", (char *)0},
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{C_CHAOS, "CH", (char *)0},
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{C_CHAOS, "CHAOS", (char *)0},
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{C_HS, "HS", (char *)0},
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{C_HS, "HESIOD", (char *)0},
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{C_ANY, "ANY", (char *)0},
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{C_NONE, "NONE", (char *)0},
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{C_IN, (char *)0, (char *)0}
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};
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/*
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* Names of message sections.
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*/
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const struct res_sym __p_default_section_syms[] = {
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{ns_s_qd, "QUERY", (char *)0},
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{ns_s_an, "ANSWER", (char *)0},
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{ns_s_ns, "AUTHORITY", (char *)0},
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{ns_s_ar, "ADDITIONAL", (char *)0},
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{0, (char *)0, (char *)0}
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};
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const struct res_sym __p_update_section_syms[] = {
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{S_ZONE, "ZONE", (char *)0},
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{S_PREREQ, "PREREQUISITE", (char *)0},
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{S_UPDATE, "UPDATE", (char *)0},
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{S_ADDT, "ADDITIONAL", (char *)0},
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{0, (char *)0, (char *)0}
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};
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const struct res_sym __p_key_syms[] = {
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{NS_ALG_MD5RSA, "RSA", "RSA KEY with MD5 hash"},
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{NS_ALG_DH, "DH", "Diffie Hellman"},
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{NS_ALG_DSA, "DSA", "Digital Signature Algorithm"},
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{NS_ALG_EXPIRE_ONLY, "EXPIREONLY", "No algorithm"},
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{NS_ALG_PRIVATE_OID, "PRIVATE", "Algorithm obtained from OID"},
|
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{0, NULL, NULL}
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};
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|
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const struct res_sym __p_cert_syms[] = {
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{cert_t_pkix, "PKIX", "PKIX (X.509v3) Certificate"},
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{cert_t_spki, "SPKI", "SPKI certificate"},
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{cert_t_pgp, "PGP", "PGP certificate"},
|
|
{cert_t_url, "URL", "URL Private"},
|
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{cert_t_oid, "OID", "OID Private"},
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{0, NULL, NULL}
|
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};
|
|
|
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/*
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|
* Names of RR types and qtypes. Types and qtypes are the same, except
|
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* that T_ANY is a qtype but not a type. (You can ask for records of type
|
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* T_ANY, but you can't have any records of that type in the database.)
|
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*/
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const struct res_sym __p_type_syms[] = {
|
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{ns_t_a, "A", "address"},
|
|
{ns_t_ns, "NS", "name server"},
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|
{ns_t_md, "MD", "mail destination (deprecated)"},
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|
{ns_t_mf, "MF", "mail forwarder (deprecated)"},
|
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{ns_t_cname, "CNAME", "canonical name"},
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{ns_t_soa, "SOA", "start of authority"},
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{ns_t_mb, "MB", "mailbox"},
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{ns_t_mg, "MG", "mail group member"},
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{ns_t_mr, "MR", "mail rename"},
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{ns_t_null, "NULL", "null"},
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{ns_t_wks, "WKS", "well-known service (deprecated)"},
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{ns_t_ptr, "PTR", "domain name pointer"},
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{ns_t_hinfo, "HINFO", "host information"},
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{ns_t_minfo, "MINFO", "mailbox information"},
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{ns_t_mx, "MX", "mail exchanger"},
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|
{ns_t_txt, "TXT", "text"},
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{ns_t_rp, "RP", "responsible person"},
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{ns_t_afsdb, "AFSDB", "DCE or AFS server"},
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|
{ns_t_x25, "X25", "X25 address"},
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{ns_t_isdn, "ISDN", "ISDN address"},
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{ns_t_rt, "RT", "router"},
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|
{ns_t_nsap, "NSAP", "nsap address"},
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|
{ns_t_nsap_ptr, "NSAP_PTR", "domain name pointer"},
|
|
{ns_t_sig, "SIG", "signature"},
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|
{ns_t_key, "KEY", "key"},
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|
{ns_t_px, "PX", "mapping information"},
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|
{ns_t_gpos, "GPOS", "geographical position (withdrawn)"},
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|
{ns_t_aaaa, "AAAA", "IPv6 address"},
|
|
{ns_t_loc, "LOC", "location"},
|
|
{ns_t_nxt, "NXT", "next valid name (unimplemented)"},
|
|
{ns_t_eid, "EID", "endpoint identifier (unimplemented)"},
|
|
{ns_t_nimloc, "NIMLOC", "NIMROD locator (unimplemented)"},
|
|
{ns_t_srv, "SRV", "server selection"},
|
|
{ns_t_atma, "ATMA", "ATM address (unimplemented)"},
|
|
{ns_t_tkey, "TKEY", "tkey"},
|
|
{ns_t_tsig, "TSIG", "transaction signature"},
|
|
{ns_t_ixfr, "IXFR", "incremental zone transfer"},
|
|
{ns_t_axfr, "AXFR", "zone transfer"},
|
|
{ns_t_zxfr, "ZXFR", "compressed zone transfer"},
|
|
{ns_t_mailb, "MAILB", "mailbox-related data (deprecated)"},
|
|
{ns_t_maila, "MAILA", "mail agent (deprecated)"},
|
|
{ns_t_naptr, "NAPTR", "URN Naming Authority"},
|
|
{ns_t_kx, "KX", "Key Exchange"},
|
|
{ns_t_cert, "CERT", "Certificate"},
|
|
{ns_t_a6, "A6", "IPv6 Address"},
|
|
{ns_t_dname, "DNAME", "dname"},
|
|
{ns_t_sink, "SINK", "Kitchen Sink (experimental)"},
|
|
{ns_t_opt, "OPT", "EDNS Options"},
|
|
{ns_t_any, "ANY", "\"any\""},
|
|
{0, NULL, NULL}
|
|
};
|
|
|
|
/*
|
|
* Names of DNS rcodes.
|
|
*/
|
|
const struct res_sym __p_rcode_syms[] = {
|
|
{ns_r_noerror, "NOERROR", "no error"},
|
|
{ns_r_formerr, "FORMERR", "format error"},
|
|
{ns_r_servfail, "SERVFAIL", "server failed"},
|
|
{ns_r_nxdomain, "NXDOMAIN", "no such domain name"},
|
|
{ns_r_notimpl, "NOTIMP", "not implemented"},
|
|
{ns_r_refused, "REFUSED", "refused"},
|
|
{ns_r_yxdomain, "YXDOMAIN", "domain name exists"},
|
|
{ns_r_yxrrset, "YXRRSET", "rrset exists"},
|
|
{ns_r_nxrrset, "NXRRSET", "rrset doesn't exist"},
|
|
{ns_r_notauth, "NOTAUTH", "not authoritative"},
|
|
{ns_r_notzone, "NOTZONE", "Not in zone"},
|
|
{ns_r_max, "", ""},
|
|
{ns_r_badsig, "BADSIG", "bad signature"},
|
|
{ns_r_badkey, "BADKEY", "bad key"},
|
|
{ns_r_badtime, "BADTIME", "bad time"},
|
|
{0, NULL, NULL}
|
|
};
|
|
|
|
int
|
|
sym_ston(const struct res_sym *syms, const char *name, int *success) {
|
|
for ((void)NULL; syms->name != 0; syms++) {
|
|
if (strcasecmp (name, syms->name) == 0) {
|
|
if (success)
|
|
*success = 1;
|
|
return (syms->number);
|
|
}
|
|
}
|
|
if (success)
|
|
*success = 0;
|
|
return (syms->number); /* The default value. */
|
|
}
|
|
|
|
const char *
|
|
sym_ntos(const struct res_sym *syms, int number, int *success) {
|
|
char *unname = sym_ntos_unname;
|
|
|
|
for ((void)NULL; syms->name != 0; syms++) {
|
|
if (number == syms->number) {
|
|
if (success)
|
|
*success = 1;
|
|
return (syms->name);
|
|
}
|
|
}
|
|
|
|
sprintf(unname, "%d", number); /* XXX nonreentrant */
|
|
if (success)
|
|
*success = 0;
|
|
return (unname);
|
|
}
|
|
|
|
const char *
|
|
sym_ntop(const struct res_sym *syms, int number, int *success) {
|
|
char *unname = sym_ntop_unname;
|
|
|
|
for ((void)NULL; syms->name != 0; syms++) {
|
|
if (number == syms->number) {
|
|
if (success)
|
|
*success = 1;
|
|
return (syms->humanname);
|
|
}
|
|
}
|
|
sprintf(unname, "%d", number); /* XXX nonreentrant */
|
|
if (success)
|
|
*success = 0;
|
|
return (unname);
|
|
}
|
|
|
|
/*
|
|
* Return a string for the type.
|
|
*/
|
|
const char *
|
|
p_type(int type) {
|
|
int success;
|
|
const char *result;
|
|
static char typebuf[20];
|
|
|
|
result = sym_ntos(__p_type_syms, type, &success);
|
|
if (success)
|
|
return (result);
|
|
if (type < 0 || type > 0xffff)
|
|
return ("BADTYPE");
|
|
sprintf(typebuf, "TYPE%d", type);
|
|
return (typebuf);
|
|
}
|
|
|
|
/*
|
|
* Return a string for the type.
|
|
*/
|
|
const char *
|
|
p_section(int section, int opcode) {
|
|
const struct res_sym *symbols;
|
|
|
|
switch (opcode) {
|
|
case ns_o_update:
|
|
symbols = __p_update_section_syms;
|
|
break;
|
|
default:
|
|
symbols = __p_default_section_syms;
|
|
break;
|
|
}
|
|
return (sym_ntos(symbols, section, (int *)0));
|
|
}
|
|
|
|
/*
|
|
* Return a mnemonic for class.
|
|
*/
|
|
const char *
|
|
p_class(int class) {
|
|
int success;
|
|
const char *result;
|
|
static char classbuf[20];
|
|
|
|
result = sym_ntos(__p_class_syms, class, &success);
|
|
if (success)
|
|
return (result);
|
|
if (class < 0 || class > 0xffff)
|
|
return ("BADCLASS");
|
|
sprintf(classbuf, "CLASS%d", class);
|
|
return (classbuf);
|
|
}
|
|
|
|
/*
|
|
* Return a mnemonic for an option
|
|
*/
|
|
const char *
|
|
p_option(u_long option) {
|
|
char *nbuf = p_option_nbuf;
|
|
|
|
switch (option) {
|
|
case RES_INIT: return "init";
|
|
case RES_DEBUG: return "debug";
|
|
case RES_AAONLY: return "aaonly(unimpl)";
|
|
case RES_USEVC: return "usevc";
|
|
case RES_PRIMARY: return "primry(unimpl)";
|
|
case RES_IGNTC: return "igntc";
|
|
case RES_RECURSE: return "recurs";
|
|
case RES_DEFNAMES: return "defnam";
|
|
case RES_STAYOPEN: return "styopn";
|
|
case RES_DNSRCH: return "dnsrch";
|
|
case RES_INSECURE1: return "insecure1";
|
|
case RES_INSECURE2: return "insecure2";
|
|
case RES_NOALIASES: return "noaliases";
|
|
case RES_USE_INET6: return "inet6";
|
|
#ifdef RES_USE_EDNS0 /* KAME extension */
|
|
case RES_USE_EDNS0: return "edns0";
|
|
#endif
|
|
#ifdef RES_USE_DNAME
|
|
case RES_USE_DNAME: return "dname";
|
|
#endif
|
|
#ifdef RES_USE_DNSSEC
|
|
case RES_USE_DNSSEC: return "dnssec";
|
|
#endif
|
|
#ifdef RES_NOTLDQUERY
|
|
case RES_NOTLDQUERY: return "no-tld-query";
|
|
#endif
|
|
#ifdef RES_NO_NIBBLE2
|
|
case RES_NO_NIBBLE2: return "no-nibble2";
|
|
#endif
|
|
/* XXX nonreentrant */
|
|
default: sprintf(nbuf, "?0x%lx?", (u_long)option);
|
|
return (nbuf);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Return a mnemonic for a time to live.
|
|
*/
|
|
const char *
|
|
p_time(u_int32_t value) {
|
|
char *nbuf = p_time_nbuf;
|
|
|
|
if (ns_format_ttl(value, nbuf, sizeof nbuf) < 0)
|
|
sprintf(nbuf, "%u", value);
|
|
return (nbuf);
|
|
}
|
|
|
|
/*
|
|
* Return a string for the rcode.
|
|
*/
|
|
const char *
|
|
p_rcode(int rcode) {
|
|
return (sym_ntos(__p_rcode_syms, rcode, (int *)0));
|
|
}
|
|
|
|
/*
|
|
* Return a string for a res_sockaddr_union.
|
|
*/
|
|
const char *
|
|
p_sockun(union res_sockaddr_union u, char *buf, size_t size) {
|
|
char ret[sizeof "ffff:ffff:ffff:ffff:ffff:ffff:123.123.123.123"];
|
|
|
|
switch (u.sin.sin_family) {
|
|
case AF_INET:
|
|
inet_ntop(AF_INET, &u.sin.sin_addr, ret, sizeof ret);
|
|
break;
|
|
#ifdef HAS_INET6_STRUCTS
|
|
case AF_INET6:
|
|
inet_ntop(AF_INET6, &u.sin6.sin6_addr, ret, sizeof ret);
|
|
break;
|
|
#endif
|
|
default:
|
|
sprintf(ret, "[af%d]", u.sin.sin_family);
|
|
break;
|
|
}
|
|
if (size > 0U) {
|
|
strncpy(buf, ret, size - 1);
|
|
buf[size - 1] = '0';
|
|
}
|
|
return (buf);
|
|
}
|
|
|
|
/*
|
|
* routines to convert between on-the-wire RR format and zone file format.
|
|
* Does not contain conversion to/from decimal degrees; divide or multiply
|
|
* by 60*60*1000 for that.
|
|
*/
|
|
|
|
static unsigned int poweroften[10] = {1, 10, 100, 1000, 10000, 100000,
|
|
1000000,10000000,100000000,1000000000};
|
|
|
|
/* takes an XeY precision/size value, returns a string representation. */
|
|
static const char *
|
|
precsize_ntoa(prec)
|
|
u_int8_t prec;
|
|
{
|
|
char *retbuf = precsize_ntoa_retbuf;
|
|
unsigned long val;
|
|
int mantissa, exponent;
|
|
|
|
mantissa = (int)((prec >> 4) & 0x0f) % 10;
|
|
exponent = (int)((prec >> 0) & 0x0f) % 10;
|
|
|
|
val = mantissa * poweroften[exponent];
|
|
|
|
(void) sprintf(retbuf, "%lu.%.2lu", val/100, val%100);
|
|
return (retbuf);
|
|
}
|
|
|
|
/* converts ascii size/precision X * 10**Y(cm) to 0xXY. moves pointer. */
|
|
static u_int8_t
|
|
precsize_aton(const char **strptr) {
|
|
unsigned int mval = 0, cmval = 0;
|
|
u_int8_t retval = 0;
|
|
const char *cp;
|
|
int exponent;
|
|
int mantissa;
|
|
|
|
cp = *strptr;
|
|
|
|
while (isdigit((unsigned char)*cp))
|
|
mval = mval * 10 + (*cp++ - '0');
|
|
|
|
if (*cp == '.') { /* centimeters */
|
|
cp++;
|
|
if (isdigit((unsigned char)*cp)) {
|
|
cmval = (*cp++ - '0') * 10;
|
|
if (isdigit((unsigned char)*cp)) {
|
|
cmval += (*cp++ - '0');
|
|
}
|
|
}
|
|
}
|
|
cmval = (mval * 100) + cmval;
|
|
|
|
for (exponent = 0; exponent < 9; exponent++)
|
|
if (cmval < poweroften[exponent+1])
|
|
break;
|
|
|
|
mantissa = cmval / poweroften[exponent];
|
|
if (mantissa > 9)
|
|
mantissa = 9;
|
|
|
|
retval = (mantissa << 4) | exponent;
|
|
|
|
*strptr = cp;
|
|
|
|
return (retval);
|
|
}
|
|
|
|
/* converts ascii lat/lon to unsigned encoded 32-bit number. moves pointer. */
|
|
static u_int32_t
|
|
latlon2ul(const char **latlonstrptr, int *which) {
|
|
const char *cp;
|
|
u_int32_t retval;
|
|
int deg = 0, min = 0, secs = 0, secsfrac = 0;
|
|
|
|
cp = *latlonstrptr;
|
|
|
|
while (isdigit((unsigned char)*cp))
|
|
deg = deg * 10 + (*cp++ - '0');
|
|
|
|
while (isspace((unsigned char)*cp))
|
|
cp++;
|
|
|
|
if (!(isdigit((unsigned char)*cp)))
|
|
goto fndhemi;
|
|
|
|
while (isdigit((unsigned char)*cp))
|
|
min = min * 10 + (*cp++ - '0');
|
|
|
|
while (isspace((unsigned char)*cp))
|
|
cp++;
|
|
|
|
if (!(isdigit((unsigned char)*cp)))
|
|
goto fndhemi;
|
|
|
|
while (isdigit((unsigned char)*cp))
|
|
secs = secs * 10 + (*cp++ - '0');
|
|
|
|
if (*cp == '.') { /* decimal seconds */
|
|
cp++;
|
|
if (isdigit((unsigned char)*cp)) {
|
|
secsfrac = (*cp++ - '0') * 100;
|
|
if (isdigit((unsigned char)*cp)) {
|
|
secsfrac += (*cp++ - '0') * 10;
|
|
if (isdigit((unsigned char)*cp)) {
|
|
secsfrac += (*cp++ - '0');
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
while (!isspace((unsigned char)*cp)) /* if any trailing garbage */
|
|
cp++;
|
|
|
|
while (isspace((unsigned char)*cp))
|
|
cp++;
|
|
|
|
fndhemi:
|
|
switch (*cp) {
|
|
case 'N': case 'n':
|
|
case 'E': case 'e':
|
|
retval = ((unsigned)1<<31)
|
|
+ (((((deg * 60) + min) * 60) + secs) * 1000)
|
|
+ secsfrac;
|
|
break;
|
|
case 'S': case 's':
|
|
case 'W': case 'w':
|
|
retval = ((unsigned)1<<31)
|
|
- (((((deg * 60) + min) * 60) + secs) * 1000)
|
|
- secsfrac;
|
|
break;
|
|
default:
|
|
retval = 0; /* invalid value -- indicates error */
|
|
break;
|
|
}
|
|
|
|
switch (*cp) {
|
|
case 'N': case 'n':
|
|
case 'S': case 's':
|
|
*which = 1; /* latitude */
|
|
break;
|
|
case 'E': case 'e':
|
|
case 'W': case 'w':
|
|
*which = 2; /* longitude */
|
|
break;
|
|
default:
|
|
*which = 0; /* error */
|
|
break;
|
|
}
|
|
|
|
cp++; /* skip the hemisphere */
|
|
|
|
while (!isspace((unsigned char)*cp)) /* if any trailing garbage */
|
|
cp++;
|
|
|
|
while (isspace((unsigned char)*cp)) /* move to next field */
|
|
cp++;
|
|
|
|
*latlonstrptr = cp;
|
|
|
|
return (retval);
|
|
}
|
|
|
|
/* converts a zone file representation in a string to an RDATA on-the-wire
|
|
* representation. */
|
|
int
|
|
loc_aton(ascii, binary)
|
|
const char *ascii;
|
|
u_char *binary;
|
|
{
|
|
const char *cp, *maxcp;
|
|
u_char *bcp;
|
|
|
|
u_int32_t latit = 0, longit = 0, alt = 0;
|
|
u_int32_t lltemp1 = 0, lltemp2 = 0;
|
|
int altmeters = 0, altfrac = 0, altsign = 1;
|
|
u_int8_t hp = 0x16; /* default = 1e6 cm = 10000.00m = 10km */
|
|
u_int8_t vp = 0x13; /* default = 1e3 cm = 10.00m */
|
|
u_int8_t siz = 0x12; /* default = 1e2 cm = 1.00m */
|
|
int which1 = 0, which2 = 0;
|
|
|
|
cp = ascii;
|
|
maxcp = cp + strlen(ascii);
|
|
|
|
lltemp1 = latlon2ul(&cp, &which1);
|
|
|
|
lltemp2 = latlon2ul(&cp, &which2);
|
|
|
|
switch (which1 + which2) {
|
|
case 3: /* 1 + 2, the only valid combination */
|
|
if ((which1 == 1) && (which2 == 2)) { /* normal case */
|
|
latit = lltemp1;
|
|
longit = lltemp2;
|
|
} else if ((which1 == 2) && (which2 == 1)) { /* reversed */
|
|
longit = lltemp1;
|
|
latit = lltemp2;
|
|
} else { /* some kind of brokenness */
|
|
return (0);
|
|
}
|
|
break;
|
|
default: /* we didn't get one of each */
|
|
return (0);
|
|
}
|
|
|
|
/* altitude */
|
|
if (*cp == '-') {
|
|
altsign = -1;
|
|
cp++;
|
|
}
|
|
|
|
if (*cp == '+')
|
|
cp++;
|
|
|
|
while (isdigit((unsigned char)*cp))
|
|
altmeters = altmeters * 10 + (*cp++ - '0');
|
|
|
|
if (*cp == '.') { /* decimal meters */
|
|
cp++;
|
|
if (isdigit((unsigned char)*cp)) {
|
|
altfrac = (*cp++ - '0') * 10;
|
|
if (isdigit((unsigned char)*cp)) {
|
|
altfrac += (*cp++ - '0');
|
|
}
|
|
}
|
|
}
|
|
|
|
alt = (10000000 + (altsign * (altmeters * 100 + altfrac)));
|
|
|
|
while (!isspace((unsigned char)*cp) && (cp < maxcp)) /* if trailing garbage or m */
|
|
cp++;
|
|
|
|
while (isspace((unsigned char)*cp) && (cp < maxcp))
|
|
cp++;
|
|
|
|
if (cp >= maxcp)
|
|
goto defaults;
|
|
|
|
siz = precsize_aton(&cp);
|
|
|
|
while (!isspace((unsigned char)*cp) && (cp < maxcp)) /* if trailing garbage or m */
|
|
cp++;
|
|
|
|
while (isspace((unsigned char)*cp) && (cp < maxcp))
|
|
cp++;
|
|
|
|
if (cp >= maxcp)
|
|
goto defaults;
|
|
|
|
hp = precsize_aton(&cp);
|
|
|
|
while (!isspace((unsigned char)*cp) && (cp < maxcp)) /* if trailing garbage or m */
|
|
cp++;
|
|
|
|
while (isspace((unsigned char)*cp) && (cp < maxcp))
|
|
cp++;
|
|
|
|
if (cp >= maxcp)
|
|
goto defaults;
|
|
|
|
vp = precsize_aton(&cp);
|
|
|
|
defaults:
|
|
|
|
bcp = binary;
|
|
*bcp++ = (u_int8_t) 0; /* version byte */
|
|
*bcp++ = siz;
|
|
*bcp++ = hp;
|
|
*bcp++ = vp;
|
|
PUTLONG(latit,bcp);
|
|
PUTLONG(longit,bcp);
|
|
PUTLONG(alt,bcp);
|
|
|
|
return (16); /* size of RR in octets */
|
|
}
|
|
|
|
/* takes an on-the-wire LOC RR and formats it in a human readable format. */
|
|
const char *
|
|
loc_ntoa(binary, ascii)
|
|
const u_char *binary;
|
|
char *ascii;
|
|
{
|
|
static const char *error = "?";
|
|
static char tmpbuf[sizeof
|
|
"1000 60 60.000 N 1000 60 60.000 W -12345678.00m 90000000.00m 90000000.00m 90000000.00m"];
|
|
const u_char *cp = binary;
|
|
|
|
int latdeg, latmin, latsec, latsecfrac;
|
|
int longdeg, longmin, longsec, longsecfrac;
|
|
char northsouth, eastwest;
|
|
const char *altsign;
|
|
int altmeters, altfrac;
|
|
|
|
const u_int32_t referencealt = 100000 * 100;
|
|
|
|
int32_t latval, longval, altval;
|
|
u_int32_t templ;
|
|
u_int8_t sizeval, hpval, vpval, versionval;
|
|
|
|
char *sizestr, *hpstr, *vpstr;
|
|
|
|
versionval = *cp++;
|
|
|
|
if (ascii == NULL)
|
|
ascii = tmpbuf;
|
|
|
|
if (versionval) {
|
|
(void) sprintf(ascii, "; error: unknown LOC RR version");
|
|
return (ascii);
|
|
}
|
|
|
|
sizeval = *cp++;
|
|
|
|
hpval = *cp++;
|
|
vpval = *cp++;
|
|
|
|
GETLONG(templ, cp);
|
|
latval = (templ - ((unsigned)1<<31));
|
|
|
|
GETLONG(templ, cp);
|
|
longval = (templ - ((unsigned)1<<31));
|
|
|
|
GETLONG(templ, cp);
|
|
if (templ < referencealt) { /* below WGS 84 spheroid */
|
|
altval = referencealt - templ;
|
|
altsign = "-";
|
|
} else {
|
|
altval = templ - referencealt;
|
|
altsign = "";
|
|
}
|
|
|
|
if (latval < 0) {
|
|
northsouth = 'S';
|
|
latval = -latval;
|
|
} else
|
|
northsouth = 'N';
|
|
|
|
latsecfrac = latval % 1000;
|
|
latval = latval / 1000;
|
|
latsec = latval % 60;
|
|
latval = latval / 60;
|
|
latmin = latval % 60;
|
|
latval = latval / 60;
|
|
latdeg = latval;
|
|
|
|
if (longval < 0) {
|
|
eastwest = 'W';
|
|
longval = -longval;
|
|
} else
|
|
eastwest = 'E';
|
|
|
|
longsecfrac = longval % 1000;
|
|
longval = longval / 1000;
|
|
longsec = longval % 60;
|
|
longval = longval / 60;
|
|
longmin = longval % 60;
|
|
longval = longval / 60;
|
|
longdeg = longval;
|
|
|
|
altfrac = altval % 100;
|
|
altmeters = (altval / 100);
|
|
|
|
sizestr = strdup(precsize_ntoa(sizeval));
|
|
hpstr = strdup(precsize_ntoa(hpval));
|
|
vpstr = strdup(precsize_ntoa(vpval));
|
|
|
|
sprintf(ascii,
|
|
"%d %.2d %.2d.%.3d %c %d %.2d %.2d.%.3d %c %s%d.%.2dm %sm %sm %sm",
|
|
latdeg, latmin, latsec, latsecfrac, northsouth,
|
|
longdeg, longmin, longsec, longsecfrac, eastwest,
|
|
altsign, altmeters, altfrac,
|
|
(sizestr != NULL) ? sizestr : error,
|
|
(hpstr != NULL) ? hpstr : error,
|
|
(vpstr != NULL) ? vpstr : error);
|
|
|
|
if (sizestr != NULL)
|
|
free(sizestr);
|
|
if (hpstr != NULL)
|
|
free(hpstr);
|
|
if (vpstr != NULL)
|
|
free(vpstr);
|
|
|
|
return (ascii);
|
|
}
|
|
|
|
|
|
/* Return the number of DNS hierarchy levels in the name. */
|
|
int
|
|
dn_count_labels(const char *name) {
|
|
int i, len, count;
|
|
|
|
len = strlen(name);
|
|
for (i = 0, count = 0; i < len; i++) {
|
|
/* XXX need to check for \. or use named's nlabels(). */
|
|
if (name[i] == '.')
|
|
count++;
|
|
}
|
|
|
|
/* don't count initial wildcard */
|
|
if (name[0] == '*')
|
|
if (count)
|
|
count--;
|
|
|
|
/* don't count the null label for root. */
|
|
/* if terminating '.' not found, must adjust */
|
|
/* count to include last label */
|
|
if (len > 0 && name[len-1] != '.')
|
|
count++;
|
|
return (count);
|
|
}
|
|
|
|
|
|
/*
|
|
* Make dates expressed in seconds-since-Jan-1-1970 easy to read.
|
|
* SIG records are required to be printed like this, by the Secure DNS RFC.
|
|
*/
|
|
char *
|
|
p_secstodate (u_long secs) {
|
|
char *output = p_secstodate_output;
|
|
time_t clock = secs;
|
|
struct tm *time;
|
|
#ifdef HAVE_TIME_R
|
|
struct tm res;
|
|
|
|
time = gmtime_r(&clock, &res);
|
|
#else
|
|
time = gmtime(&clock);
|
|
#endif
|
|
time->tm_year += 1900;
|
|
time->tm_mon += 1;
|
|
sprintf(output, "%04d%02d%02d%02d%02d%02d",
|
|
time->tm_year, time->tm_mon, time->tm_mday,
|
|
time->tm_hour, time->tm_min, time->tm_sec);
|
|
return (output);
|
|
}
|
|
|
|
u_int16_t
|
|
res_nametoclass(const char *buf, int *successp) {
|
|
unsigned long result;
|
|
char *endptr;
|
|
int success;
|
|
|
|
result = sym_ston(__p_class_syms, buf, &success);
|
|
if (success)
|
|
goto done;
|
|
|
|
if (strncasecmp(buf, "CLASS", 5) != 0 ||
|
|
!isdigit((unsigned char)buf[5]))
|
|
goto done;
|
|
errno = 0;
|
|
result = strtoul(buf + 5, &endptr, 10);
|
|
if (errno == 0 && *endptr == '\0' && result <= 0xffffU)
|
|
success = 1;
|
|
done:
|
|
if (successp)
|
|
*successp = success;
|
|
return (result);
|
|
}
|
|
|
|
u_int16_t
|
|
res_nametotype(const char *buf, int *successp) {
|
|
unsigned long result;
|
|
char *endptr;
|
|
int success;
|
|
|
|
result = sym_ston(__p_type_syms, buf, &success);
|
|
if (success)
|
|
goto done;
|
|
|
|
if (strncasecmp(buf, "type", 4) != 0 ||
|
|
!isdigit((unsigned char)buf[4]))
|
|
goto done;
|
|
errno = 0;
|
|
result = strtoul(buf + 4, &endptr, 10);
|
|
if (errno == 0 && *endptr == '\0' && result <= 0xffffU)
|
|
success = 1;
|
|
done:
|
|
if (successp)
|
|
*successp = success;
|
|
return (result);
|
|
}
|