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754034c429
This patch, relative to a tree with <https://sourceware.org/ml/libc-alpha/2017-11/msg00797.html> (pending review) applied, obsoletes p_secstodate, making the underlying function __p_secstodate into a compat symbol not available for new binaries or ports. The calls in ns_print.c (part of incomplete handling of TKEY) are changed to use %lu to print times instead of trying to pretty-print the times any more. Tested for x86_64. * resolv/res_debug.c (p_secstodate): Condition definition on [SHLIB_COMPAT (libresolv, GLIBC_2_0, GLIBC_2_27)]. Define directly as __p_secstodate, and as a compat symbol. Do not use libresolv_hidden_def. * resolv/resolv.h (p_secstodate): Remove macro and function declaration. * resolv/ns_print.c (ns_sprintrrf): Print times with %lu, not using p_secstodate. * include/resolv.h (__p_secstodate): Do not use libresolv_hidden_proto. * resolv/Makefile (tests): Move tst-p_secstodate to .... (tests-internal): ... here. * resolv/tst-p_secstodate.c: Include <shlib-compat.h>. Condition all contents on [TEST_COMPAT (libresolv, GLIBC_2_0, GLIBC_2_27)] and declare and use __p_secstodate and use compat_symbol_reference in that case. [!TEST_COMPAT (libresolv, GLIBC_2_0, GLIBC_2_27)] (do_test): Add implementation returning 77.
1099 lines
30 KiB
C
1099 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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* 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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* 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 INTERNET SOFTWARE CONSORTIUM DISCLAIMS
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* ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
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* CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
|
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* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
|
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* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
|
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* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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* SOFTWARE.
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*/
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#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/resolv-internal.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 <shlib-compat.h>
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#include <libc-diag.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_sectioncodes[] attribute_hidden;
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/* _res_opcodes was exported by accident as a variable. */
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#if SHLIB_COMPAT (libresolv, GLIBC_2_0, GLIBC_2_26)
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static const char *res_opcodes[] =
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#else
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static const char res_opcodes[][9] =
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#endif
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{
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"QUERY",
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"IQUERY",
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"CQUERYM",
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"CQUERYU", /* experimental */
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"NOTIFY", /* experimental */
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"UPDATE",
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"6",
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"7",
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"8",
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"9",
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"10",
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"11",
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"12",
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"13",
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"ZONEINIT",
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"ZONEREF",
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};
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#if SHLIB_COMPAT (libresolv, GLIBC_2_0, GLIBC_2_26)
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strong_alias (res_opcodes, _res_opcodes)
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#endif
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static const char *p_section(int section, int opcode);
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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 != 0; 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 (int pfcode, ns_msg *handle, ns_sect section, 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 = (pfcode & pflag);
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if (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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(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 && (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 {
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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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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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fp_nquery (const unsigned char *msg, int len, FILE *file)
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{
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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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/* There is no need to initialize _res: If _res is not yet
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initialized, _res.pfcode is zero. But initialization will
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leave it at zero, too. _res.pfcode is an unsigned long,
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but the code here assumes that the flags fit into an int,
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so use that. */
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int pfcode = _res.pfcode;
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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 ((!pfcode) || (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 ((!pfcode) || (pfcode & RES_PRF_HEADX))
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putc(';', file);
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if ((!pfcode) || (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 ((!pfcode) || (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 ((!pfcode) || (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 (pfcode, &handle, ns_s_qd, RES_PRF_QUES, file);
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do_section (pfcode, &handle, ns_s_an, RES_PRF_ANS, file);
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do_section (pfcode, &handle, ns_s_ns, RES_PRF_AUTH, file);
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do_section (pfcode, &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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libresolv_hidden_def (fp_nquery)
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void
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fp_query (const unsigned char *msg, FILE *file)
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{
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fp_nquery (msg, PACKETSZ, file);
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}
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libresolv_hidden_def (fp_query)
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void
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p_query (const unsigned char *msg)
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{
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fp_query (msg, stdout);
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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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libresolv_hidden_def (p_cdnname)
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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 (const u_char *cp, const u_char *msg, int msglen, char *name,
|
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int namelen)
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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);
|
|
newlen = strlen(name);
|
|
if (newlen == 0 || name[newlen - 1] != '.') {
|
|
if (newlen + 1 >= namelen) /* Lack space for final dot */
|
|
return (NULL);
|
|
else
|
|
strcpy(name + newlen, ".");
|
|
}
|
|
return (cp + n);
|
|
}
|
|
libresolv_hidden_def (p_fqnname)
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|
|
|
/* XXX: the rest of these functions need to become length-limited, too. */
|
|
|
|
const u_char *
|
|
p_fqname(const u_char *cp, const u_char *msg, FILE *file) {
|
|
char name[MAXDNAME];
|
|
const u_char *n;
|
|
|
|
n = p_fqnname(cp, msg, MAXCDNAME, name, sizeof name);
|
|
if (n == NULL)
|
|
return (NULL);
|
|
fputs(name, file);
|
|
return (n);
|
|
}
|
|
|
|
/*
|
|
* Names of RR classes and qclasses. Classes and qclasses are the same, except
|
|
* that C_ANY is a qclass but not a class. (You can ask for records of class
|
|
* C_ANY, but you can't have any records of that class in the database.)
|
|
*/
|
|
extern const struct res_sym __p_class_syms[];
|
|
libresolv_hidden_proto (__p_class_syms)
|
|
const struct res_sym __p_class_syms[] = {
|
|
{C_IN, (char *) "IN"},
|
|
{C_CHAOS, (char *) "CHAOS"},
|
|
{C_HS, (char *) "HS"},
|
|
{C_HS, (char *) "HESIOD"},
|
|
{C_ANY, (char *) "ANY"},
|
|
{C_NONE, (char *) "NONE"},
|
|
{C_IN, NULL, NULL}
|
|
};
|
|
libresolv_hidden_data_def (__p_class_syms)
|
|
|
|
/*
|
|
* Names of message sections.
|
|
*/
|
|
const struct res_sym __p_default_section_syms[] attribute_hidden = {
|
|
{ns_s_qd, (char *) "QUERY"},
|
|
{ns_s_an, (char *) "ANSWER"},
|
|
{ns_s_ns, (char *) "AUTHORITY"},
|
|
{ns_s_ar, (char *) "ADDITIONAL"},
|
|
{0, NULL, NULL}
|
|
};
|
|
|
|
const struct res_sym __p_update_section_syms[] attribute_hidden = {
|
|
{S_ZONE, (char *) "ZONE"},
|
|
{S_PREREQ, (char *) "PREREQUISITE"},
|
|
{S_UPDATE, (char *) "UPDATE"},
|
|
{S_ADDT, (char *) "ADDITIONAL"},
|
|
{0, NULL, NULL}
|
|
};
|
|
|
|
/*
|
|
* Names of RR types and qtypes. The list is incomplete because its
|
|
* size is part of the ABI.
|
|
*/
|
|
extern const struct res_sym __p_type_syms[];
|
|
libresolv_hidden_proto (__p_type_syms)
|
|
const struct res_sym __p_type_syms[] = {
|
|
{ns_t_a, (char *) "A", (char *) "address"},
|
|
{ns_t_ns, (char *) "NS", (char *) "name server"},
|
|
{ns_t_md, (char *) "MD", (char *) "mail destination (deprecated)"},
|
|
{ns_t_mf, (char *) "MF", (char *) "mail forwarder (deprecated)"},
|
|
{ns_t_cname, (char *) "CNAME", (char *) "canonical name"},
|
|
{ns_t_soa, (char *) "SOA", (char *) "start of authority"},
|
|
{ns_t_mb, (char *) "MB", (char *) "mailbox"},
|
|
{ns_t_mg, (char *) "MG", (char *) "mail group member"},
|
|
{ns_t_mr, (char *) "MR", (char *) "mail rename"},
|
|
{ns_t_null, (char *) "NULL", (char *) "null"},
|
|
{ns_t_wks, (char *) "WKS", (char *) "well-known service (deprecated)"},
|
|
{ns_t_ptr, (char *) "PTR", (char *) "domain name pointer"},
|
|
{ns_t_hinfo, (char *) "HINFO", (char *) "host information"},
|
|
{ns_t_minfo, (char *) "MINFO", (char *) "mailbox information"},
|
|
{ns_t_mx, (char *) "MX", (char *) "mail exchanger"},
|
|
{ns_t_txt, (char *) "TXT", (char *) "text"},
|
|
{ns_t_rp, (char *) "RP", (char *) "responsible person"},
|
|
{ns_t_afsdb, (char *) "AFSDB", (char *) "DCE or AFS server"},
|
|
{ns_t_x25, (char *) "X25", (char *) "X25 address"},
|
|
{ns_t_isdn, (char *) "ISDN", (char *) "ISDN address"},
|
|
{ns_t_rt, (char *) "RT", (char *) "router"},
|
|
{ns_t_nsap, (char *) "NSAP", (char *) "nsap address"},
|
|
{ns_t_nsap_ptr, (char *) "NSAP_PTR", (char *) "domain name pointer"},
|
|
{ns_t_sig, (char *) "SIG", (char *) "signature"},
|
|
{ns_t_key, (char *) "KEY", (char *) "key"},
|
|
{ns_t_px, (char *) "PX", (char *) "mapping information"},
|
|
{ns_t_gpos, (char *) "GPOS",
|
|
(char *) "geographical position (withdrawn)"},
|
|
{ns_t_aaaa, (char *) "AAAA", (char *) "IPv6 address"},
|
|
{ns_t_loc, (char *) "LOC", (char *) "location"},
|
|
{ns_t_nxt, (char *) "NXT", (char *) "next valid name (unimplemented)"},
|
|
{ns_t_eid, (char *) "EID", (char *) "endpoint identifier (unimplemented)"},
|
|
{ns_t_nimloc, (char *) "NIMLOC", (char *) "NIMROD locator (unimplemented)"},
|
|
{ns_t_srv, (char *) "SRV", (char *) "server selection"},
|
|
{ns_t_atma, (char *) "ATMA", (char *) "ATM address (unimplemented)"},
|
|
{ns_t_dname, (char *) "DNAME", (char *) "Non-terminal DNAME (for IPv6)"},
|
|
{ns_t_tsig, (char *) "TSIG", (char *) "transaction signature"},
|
|
{ns_t_ixfr, (char *) "IXFR", (char *) "incremental zone transfer"},
|
|
{ns_t_axfr, (char *) "AXFR", (char *) "zone transfer"},
|
|
{ns_t_mailb, (char *) "MAILB", (char *) "mailbox-related data (deprecated)"},
|
|
{ns_t_maila, (char *) "MAILA", (char *) "mail agent (deprecated)"},
|
|
{ns_t_naptr, (char *) "NAPTR", (char *) "URN Naming Authority"},
|
|
{ns_t_kx, (char *) "KX", (char *) "Key Exchange"},
|
|
{ns_t_cert, (char *) "CERT", (char *) "Certificate"},
|
|
{ns_t_any, (char *) "ANY", (char *) "\"any\""},
|
|
{0, NULL, NULL}, /* Padding to preserve ABI. */
|
|
{0, NULL, NULL}
|
|
};
|
|
libresolv_hidden_data_def (__p_type_syms)
|
|
|
|
/*
|
|
* Names of DNS rcodes.
|
|
*/
|
|
const struct res_sym __p_rcode_syms[] attribute_hidden = {
|
|
{ns_r_noerror, (char *) "NOERROR", (char *) "no error"},
|
|
{ns_r_formerr, (char *) "FORMERR", (char *) "format error"},
|
|
{ns_r_servfail, (char *) "SERVFAIL", (char *) "server failed"},
|
|
{ns_r_nxdomain, (char *) "NXDOMAIN", (char *) "no such domain name"},
|
|
{ns_r_notimpl, (char *) "NOTIMP", (char *) "not implemented"},
|
|
{ns_r_refused, (char *) "REFUSED", (char *) "refused"},
|
|
{ns_r_yxdomain, (char *) "YXDOMAIN", (char *) "domain name exists"},
|
|
{ns_r_yxrrset, (char *) "YXRRSET", (char *) "rrset exists"},
|
|
{ns_r_nxrrset, (char *) "NXRRSET", (char *) "rrset doesn't exist"},
|
|
{ns_r_notauth, (char *) "NOTAUTH", (char *) "not authoritative"},
|
|
{ns_r_notzone, (char *) "NOTZONE", (char *) "Not in zone"},
|
|
{ns_r_max, (char *) "", (char *) ""},
|
|
{ns_r_badsig, (char *) "BADSIG", (char *) "bad signature"},
|
|
{ns_r_badkey, (char *) "BADKEY", (char *) "bad key"},
|
|
{ns_r_badtime, (char *) "BADTIME", (char *) "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) {
|
|
static char unname[20];
|
|
|
|
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);
|
|
}
|
|
libresolv_hidden_def (sym_ntos)
|
|
|
|
const char *
|
|
sym_ntop(const struct res_sym *syms, int number, int *success) {
|
|
static char unname[20];
|
|
|
|
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) {
|
|
return (sym_ntos(__p_type_syms, type, (int *)0));
|
|
}
|
|
libresolv_hidden_def (p_type)
|
|
|
|
/*
|
|
* Return a string for the type.
|
|
*/
|
|
static 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) {
|
|
return (sym_ntos(__p_class_syms, class, (int *)0));
|
|
}
|
|
libresolv_hidden_def (p_class)
|
|
|
|
/*
|
|
* Return a mnemonic for an option
|
|
*/
|
|
const char *
|
|
p_option(u_long option) {
|
|
static char nbuf[40];
|
|
|
|
switch (option) {
|
|
case RES_INIT: return "init";
|
|
case RES_DEBUG: return "debug";
|
|
case RES_USEVC: return "use-vc";
|
|
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 DEPRECATED_RES_USE_INET6: return "inet6";
|
|
case RES_ROTATE: return "rotate";
|
|
case RES_USE_EDNS0: return "edns0";
|
|
case RES_SNGLKUP: return "single-request";
|
|
case RES_SNGLKUPREOP: return "single-request-reopen";
|
|
case RES_USE_DNSSEC: return "dnssec";
|
|
case RES_NOTLDQUERY: return "no-tld-query";
|
|
case RES_NORELOAD: return "no-reload";
|
|
/* XXX nonreentrant */
|
|
default: sprintf(nbuf, "?0x%lx?", (u_long)option);
|
|
return (nbuf);
|
|
}
|
|
}
|
|
libresolv_hidden_def (p_option)
|
|
|
|
/*
|
|
* Return a mnemonic for a time to live.
|
|
*/
|
|
const char *
|
|
p_time(uint32_t value) {
|
|
static char nbuf[40]; /* XXX nonreentrant */
|
|
|
|
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));
|
|
}
|
|
libresolv_hidden_def (p_rcode)
|
|
|
|
/*
|
|
* 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 const 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 (uint8_t prec)
|
|
{
|
|
static char retbuf[sizeof "90000000.00"]; /* XXX nonreentrant */
|
|
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, "%ld.%.2ld", val/100, val%100);
|
|
return (retbuf);
|
|
}
|
|
|
|
/* converts ascii size/precision X * 10**Y(cm) to 0xXY. moves pointer. */
|
|
static uint8_t
|
|
precsize_aton (const char **strptr)
|
|
{
|
|
unsigned int mval = 0, cmval = 0;
|
|
uint8_t retval = 0;
|
|
const char *cp;
|
|
int exponent;
|
|
int mantissa;
|
|
|
|
cp = *strptr;
|
|
|
|
while (isdigit(*cp))
|
|
mval = mval * 10 + (*cp++ - '0');
|
|
|
|
if (*cp == '.') { /* centimeters */
|
|
cp++;
|
|
if (isdigit(*cp)) {
|
|
cmval = (*cp++ - '0') * 10;
|
|
if (isdigit(*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 uint32_t
|
|
latlon2ul (const char **latlonstrptr, int *which)
|
|
{
|
|
const char *cp;
|
|
uint32_t retval;
|
|
int deg = 0, min = 0, secs = 0, secsfrac = 0;
|
|
|
|
cp = *latlonstrptr;
|
|
|
|
while (isdigit(*cp))
|
|
deg = deg * 10 + (*cp++ - '0');
|
|
|
|
while (isspace(*cp))
|
|
cp++;
|
|
|
|
if (!(isdigit(*cp)))
|
|
goto fndhemi;
|
|
|
|
while (isdigit(*cp))
|
|
min = min * 10 + (*cp++ - '0');
|
|
|
|
while (isspace(*cp))
|
|
cp++;
|
|
|
|
if (!(isdigit(*cp)))
|
|
goto fndhemi;
|
|
|
|
while (isdigit(*cp))
|
|
secs = secs * 10 + (*cp++ - '0');
|
|
|
|
if (*cp == '.') { /* decimal seconds */
|
|
cp++;
|
|
if (isdigit(*cp)) {
|
|
secsfrac = (*cp++ - '0') * 100;
|
|
if (isdigit(*cp)) {
|
|
secsfrac += (*cp++ - '0') * 10;
|
|
if (isdigit(*cp)) {
|
|
secsfrac += (*cp++ - '0');
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
while (!isspace(*cp)) /* if any trailing garbage */
|
|
cp++;
|
|
|
|
while (isspace(*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(*cp)) /* if any trailing garbage */
|
|
cp++;
|
|
|
|
while (isspace(*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 (const char *ascii, u_char *binary)
|
|
{
|
|
const char *cp, *maxcp;
|
|
u_char *bcp;
|
|
|
|
uint32_t latit = 0, longit = 0, alt = 0;
|
|
uint32_t lltemp1 = 0, lltemp2 = 0;
|
|
int altmeters = 0, altfrac = 0, altsign = 1;
|
|
uint8_t hp = 0x16; /* default = 1e6 cm = 10000.00m = 10km */
|
|
uint8_t vp = 0x13; /* default = 1e3 cm = 10.00m */
|
|
uint8_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(*cp))
|
|
altmeters = altmeters * 10 + (*cp++ - '0');
|
|
|
|
if (*cp == '.') { /* decimal meters */
|
|
cp++;
|
|
if (isdigit(*cp)) {
|
|
altfrac = (*cp++ - '0') * 10;
|
|
if (isdigit(*cp)) {
|
|
altfrac += (*cp++ - '0');
|
|
}
|
|
}
|
|
}
|
|
|
|
alt = (10000000 + (altsign * (altmeters * 100 + altfrac)));
|
|
|
|
while (!isspace(*cp) && (cp < maxcp)) /* if trailing garbage or m */
|
|
cp++;
|
|
|
|
while (isspace(*cp) && (cp < maxcp))
|
|
cp++;
|
|
|
|
if (cp >= maxcp)
|
|
goto defaults;
|
|
|
|
siz = precsize_aton(&cp);
|
|
|
|
while (!isspace(*cp) && (cp < maxcp)) /* if trailing garbage or m */
|
|
cp++;
|
|
|
|
while (isspace(*cp) && (cp < maxcp))
|
|
cp++;
|
|
|
|
if (cp >= maxcp)
|
|
goto defaults;
|
|
|
|
hp = precsize_aton(&cp);
|
|
|
|
while (!isspace(*cp) && (cp < maxcp)) /* if trailing garbage or m */
|
|
cp++;
|
|
|
|
while (isspace(*cp) && (cp < maxcp))
|
|
cp++;
|
|
|
|
if (cp >= maxcp)
|
|
goto defaults;
|
|
|
|
vp = precsize_aton(&cp);
|
|
|
|
defaults:
|
|
|
|
bcp = binary;
|
|
*bcp++ = (uint8_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 (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;
|
|
int altmeters, altfrac, altsign;
|
|
|
|
const uint32_t referencealt = 100000 * 100;
|
|
|
|
int32_t latval, longval, altval;
|
|
uint32_t templ;
|
|
uint8_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 = -1;
|
|
} else {
|
|
altval = templ - referencealt;
|
|
altsign = 1;
|
|
}
|
|
|
|
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) * altsign;
|
|
|
|
if ((sizestr = strdup(precsize_ntoa(sizeval))) == NULL)
|
|
sizestr = (char *) error;
|
|
if ((hpstr = strdup(precsize_ntoa(hpval))) == NULL)
|
|
hpstr = (char *) error;
|
|
if ((vpstr = strdup(precsize_ntoa(vpval))) == NULL)
|
|
vpstr = (char *) error;
|
|
|
|
sprintf(ascii,
|
|
"%d %.2d %.2d.%.3d %c %d %.2d %.2d.%.3d %c %d.%.2dm %sm %sm %sm",
|
|
latdeg, latmin, latsec, latsecfrac, northsouth,
|
|
longdeg, longmin, longsec, longsecfrac, eastwest,
|
|
altmeters, altfrac, sizestr, hpstr, vpstr);
|
|
|
|
if (sizestr != (char *) error)
|
|
free(sizestr);
|
|
if (hpstr != (char *) error)
|
|
free(hpstr);
|
|
if (vpstr != (char *) error)
|
|
free(vpstr);
|
|
|
|
return (ascii);
|
|
}
|
|
libresolv_hidden_def (loc_ntoa)
|
|
|
|
|
|
/* 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);
|
|
}
|
|
libresolv_hidden_def (__dn_count_labels)
|
|
|
|
|
|
#if SHLIB_COMPAT (libresolv, GLIBC_2_0, GLIBC_2_27)
|
|
/*
|
|
* 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.
|
|
* This is an obsolescent function and does not handle dates outside the
|
|
* signed 32-bit range.
|
|
*/
|
|
char *
|
|
__p_secstodate (u_long secs) {
|
|
/* XXX nonreentrant */
|
|
static char output[15]; /* YYYYMMDDHHMMSS and null */
|
|
time_t clock = secs;
|
|
struct tm *time;
|
|
|
|
struct tm timebuf;
|
|
/* The call to __gmtime_r can never produce a year overflowing
|
|
the range of int, given the check on SECS, but check for a
|
|
NULL return anyway to avoid a null pointer dereference in
|
|
case there are any other unspecified errors. */
|
|
if (secs > 0x7fffffff
|
|
|| (time = __gmtime_r (&clock, &timebuf)) == NULL) {
|
|
strcpy (output, "<overflow>");
|
|
__set_errno (EOVERFLOW);
|
|
return output;
|
|
}
|
|
time->tm_year += 1900;
|
|
time->tm_mon += 1;
|
|
/* The struct tm fields, given the above range check,
|
|
must have values that mean this sprintf exactly fills the
|
|
buffer. But as of GCC 8 of 2017-11-21, GCC cannot tell
|
|
that, even given range checks on all fields with
|
|
__builtin_unreachable called for out-of-range values. */
|
|
DIAG_PUSH_NEEDS_COMMENT;
|
|
# if __GNUC_PREREQ (7, 0)
|
|
DIAG_IGNORE_NEEDS_COMMENT (8, "-Wformat-overflow=");
|
|
# endif
|
|
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);
|
|
DIAG_POP_NEEDS_COMMENT;
|
|
return (output);
|
|
}
|
|
compat_symbol (libresolv, __p_secstodate, __p_secstodate, GLIBC_2_0);
|
|
#endif
|