[028aaaf] | 1 | #include "port_before.h" |
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| 2 | |
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| 3 | /* |
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| 4 | * Copyright (c) 1985 |
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| 5 | * The Regents of the University of California. All rights reserved. |
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| 6 | * |
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| 7 | * Redistribution and use in source and binary forms, with or without |
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| 8 | * modification, are permitted provided that the following conditions |
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| 9 | * are met: |
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| 10 | * 1. Redistributions of source code must retain the above copyright |
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| 11 | * notice, this list of conditions and the following disclaimer. |
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| 12 | * 2. Redistributions in binary form must reproduce the above copyright |
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| 13 | * notice, this list of conditions and the following disclaimer in the |
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| 14 | * documentation and/or other materials provided with the distribution. |
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| 15 | * 4. Neither the name of the University nor the names of its contributors |
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| 16 | * may be used to endorse or promote products derived from this software |
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| 17 | * without specific prior written permission. |
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| 18 | * |
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| 19 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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| 20 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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| 21 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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| 22 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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| 23 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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| 24 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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| 25 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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| 26 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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| 27 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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| 28 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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| 29 | * SUCH DAMAGE. |
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| 30 | */ |
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| 31 | |
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| 32 | /* |
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| 33 | * Portions Copyright (c) 1993 by Digital Equipment Corporation. |
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| 34 | * |
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| 35 | * Permission to use, copy, modify, and distribute this software for any |
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| 36 | * purpose with or without fee is hereby granted, provided that the above |
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| 37 | * copyright notice and this permission notice appear in all copies, and that |
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| 38 | * the name of Digital Equipment Corporation not be used in advertising or |
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| 39 | * publicity pertaining to distribution of the document or software without |
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| 40 | * specific, written prior permission. |
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| 41 | * |
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| 42 | * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL |
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| 43 | * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES |
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| 44 | * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT |
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| 45 | * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL |
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| 46 | * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR |
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| 47 | * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS |
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| 48 | * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS |
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| 49 | * SOFTWARE. |
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| 50 | */ |
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| 51 | |
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| 52 | /* |
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| 53 | * Portions Copyright (c) 1995 by International Business Machines, Inc. |
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| 54 | * |
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| 55 | * International Business Machines, Inc. (hereinafter called IBM) grants |
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| 56 | * permission under its copyrights to use, copy, modify, and distribute this |
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| 57 | * Software with or without fee, provided that the above copyright notice and |
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| 58 | * all paragraphs of this notice appear in all copies, and that the name of IBM |
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| 59 | * not be used in connection with the marketing of any product incorporating |
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| 60 | * the Software or modifications thereof, without specific, written prior |
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| 61 | * permission. |
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| 62 | * |
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| 63 | * To the extent it has a right to do so, IBM grants an immunity from suit |
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| 64 | * under its patents, if any, for the use, sale or manufacture of products to |
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| 65 | * the extent that such products are used for performing Domain Name System |
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| 66 | * dynamic updates in TCP/IP networks by means of the Software. No immunity is |
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| 67 | * granted for any product per se or for any other function of any product. |
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| 68 | * |
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| 69 | * THE SOFTWARE IS PROVIDED "AS IS", AND IBM DISCLAIMS ALL WARRANTIES, |
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| 70 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A |
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| 71 | * PARTICULAR PURPOSE. IN NO EVENT SHALL IBM BE LIABLE FOR ANY SPECIAL, |
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| 72 | * DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER ARISING |
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| 73 | * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE, EVEN |
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| 74 | * IF IBM IS APPRISED OF THE POSSIBILITY OF SUCH DAMAGES. |
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| 75 | */ |
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| 76 | |
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| 77 | /* |
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| 78 | * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC") |
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| 79 | * Portions Copyright (c) 1996-1999 by Internet Software Consortium. |
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| 80 | * |
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| 81 | * Permission to use, copy, modify, and distribute this software for any |
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| 82 | * purpose with or without fee is hereby granted, provided that the above |
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| 83 | * copyright notice and this permission notice appear in all copies. |
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| 84 | * |
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| 85 | * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES |
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| 86 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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| 87 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR |
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| 88 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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| 89 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
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| 90 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT |
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| 91 | * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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| 92 | */ |
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| 93 | |
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| 94 | #if defined(LIBC_SCCS) && !defined(lint) |
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| 95 | static const char sccsid[] = "@(#)res_debug.c 8.1 (Berkeley) 6/4/93"; |
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| 96 | static const char rcsid[] = "$Id: res_debug.c,v 1.10.18.6 2008/04/03 23:15:15 marka Exp $"; |
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| 97 | #endif /* LIBC_SCCS and not lint */ |
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| 98 | #include <sys/cdefs.h> |
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| 99 | __FBSDID("$FreeBSD$"); |
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| 100 | |
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| 101 | #include "port_before.h" |
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| 102 | |
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| 103 | #include <sys/types.h> |
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| 104 | #include <sys/param.h> |
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| 105 | #include <sys/socket.h> |
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| 106 | |
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| 107 | #include <netinet/in.h> |
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| 108 | #include <arpa/inet.h> |
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| 109 | #include <arpa/nameser.h> |
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| 110 | |
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| 111 | #include <ctype.h> |
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| 112 | #include <errno.h> |
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| 113 | #include <math.h> |
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| 114 | #include <netdb.h> |
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| 115 | #include <resolv.h> |
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| 116 | #include <resolv_mt.h> |
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| 117 | #include <stdio.h> |
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| 118 | #include <stdlib.h> |
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| 119 | #include <string.h> |
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| 120 | #include <time.h> |
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| 121 | |
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| 122 | #include "port_after.h" |
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| 123 | |
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| 124 | #ifdef SPRINTF_CHAR |
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| 125 | # define SPRINTF(x) strlen(sprintf/**/x) |
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| 126 | #else |
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| 127 | # define SPRINTF(x) sprintf x |
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| 128 | #endif |
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| 129 | |
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| 130 | extern const char *_res_opcodes[]; |
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| 131 | extern const char *_res_sectioncodes[]; |
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| 132 | |
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| 133 | /*% |
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| 134 | * Print the current options. |
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| 135 | */ |
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| 136 | void |
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| 137 | fp_resstat(const res_state statp, FILE *file) { |
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| 138 | u_long mask; |
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| 139 | |
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| 140 | fprintf(file, ";; res options:"); |
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| 141 | for (mask = 1; mask != 0U; mask <<= 1) |
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| 142 | if (statp->options & mask) |
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| 143 | fprintf(file, " %s", p_option(mask)); |
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| 144 | putc('\n', file); |
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| 145 | } |
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| 146 | |
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| 147 | static void |
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| 148 | do_section(const res_state statp, |
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| 149 | ns_msg *handle, ns_sect section, |
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| 150 | int pflag, FILE *file) |
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| 151 | { |
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| 152 | int n, sflag, rrnum; |
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| 153 | static int buflen = 2048; |
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| 154 | char *buf; |
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| 155 | ns_opcode opcode; |
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| 156 | ns_rr rr; |
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| 157 | |
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| 158 | /* |
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| 159 | * Print answer records. |
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| 160 | */ |
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| 161 | sflag = (statp->pfcode & pflag); |
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| 162 | if (statp->pfcode && !sflag) |
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| 163 | return; |
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| 164 | |
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| 165 | buf = malloc(buflen); |
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| 166 | if (buf == NULL) { |
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| 167 | fprintf(file, ";; memory allocation failure\n"); |
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| 168 | return; |
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| 169 | } |
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| 170 | |
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| 171 | opcode = (ns_opcode) ns_msg_getflag(*handle, ns_f_opcode); |
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| 172 | rrnum = 0; |
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| 173 | for (;;) { |
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| 174 | if (ns_parserr(handle, section, rrnum, &rr)) { |
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| 175 | if (errno != ENODEV) |
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| 176 | fprintf(file, ";; ns_parserr: %s\n", |
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| 177 | strerror(errno)); |
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| 178 | else if (rrnum > 0 && sflag != 0 && |
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| 179 | (statp->pfcode & RES_PRF_HEAD1)) |
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| 180 | putc('\n', file); |
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| 181 | goto cleanup; |
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| 182 | } |
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| 183 | if (rrnum == 0 && sflag != 0 && (statp->pfcode & RES_PRF_HEAD1)) |
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| 184 | fprintf(file, ";; %s SECTION:\n", |
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| 185 | p_section(section, opcode)); |
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| 186 | if (section == ns_s_qd) |
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| 187 | fprintf(file, ";;\t%s, type = %s, class = %s\n", |
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| 188 | ns_rr_name(rr), |
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| 189 | p_type(ns_rr_type(rr)), |
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| 190 | p_class(ns_rr_class(rr))); |
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| 191 | else if (section == ns_s_ar && ns_rr_type(rr) == ns_t_opt) { |
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| 192 | u_int16_t optcode, optlen, rdatalen = ns_rr_rdlen(rr); |
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| 193 | u_int32_t ttl = ns_rr_ttl(rr); |
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| 194 | |
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| 195 | fprintf(file, |
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| 196 | "; EDNS: version: %u, udp=%u, flags=%04x\n", |
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| 197 | (ttl>>16)&0xff, ns_rr_class(rr), ttl&0xffff); |
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| 198 | |
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| 199 | while (rdatalen >= 4) { |
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| 200 | const u_char *cp = ns_rr_rdata(rr); |
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| 201 | int i; |
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| 202 | |
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| 203 | GETSHORT(optcode, cp); |
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| 204 | GETSHORT(optlen, cp); |
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| 205 | |
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| 206 | if (optcode == NS_OPT_NSID) { |
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| 207 | fputs("; NSID: ", file); |
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| 208 | if (optlen == 0) { |
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| 209 | fputs("; NSID\n", file); |
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| 210 | } else { |
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| 211 | fputs("; NSID: ", file); |
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| 212 | for (i = 0; i < optlen; i++) |
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| 213 | fprintf(file, "%02x ", |
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| 214 | cp[i]); |
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| 215 | fputs(" (",file); |
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| 216 | for (i = 0; i < optlen; i++) |
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| 217 | fprintf(file, "%c", |
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| 218 | isprint(cp[i])? |
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| 219 | cp[i] : '.'); |
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| 220 | fputs(")\n", file); |
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| 221 | } |
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| 222 | } else { |
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| 223 | if (optlen == 0) { |
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| 224 | fprintf(file, "; OPT=%u\n", |
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| 225 | optcode); |
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| 226 | } else { |
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| 227 | fprintf(file, "; OPT=%u: ", |
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| 228 | optcode); |
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| 229 | for (i = 0; i < optlen; i++) |
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| 230 | fprintf(file, "%02x ", |
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| 231 | cp[i]); |
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| 232 | fputs(" (",file); |
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| 233 | for (i = 0; i < optlen; i++) |
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| 234 | fprintf(file, "%c", |
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| 235 | isprint(cp[i]) ? |
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| 236 | cp[i] : '.'); |
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| 237 | fputs(")\n", file); |
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| 238 | } |
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| 239 | } |
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| 240 | rdatalen -= 4 + optlen; |
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| 241 | } |
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| 242 | } else { |
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| 243 | n = ns_sprintrr(handle, &rr, NULL, NULL, |
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| 244 | buf, buflen); |
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| 245 | if (n < 0) { |
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| 246 | if (errno == ENOSPC) { |
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| 247 | free(buf); |
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| 248 | buf = NULL; |
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| 249 | if (buflen < 131072) |
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| 250 | buf = malloc(buflen += 1024); |
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| 251 | if (buf == NULL) { |
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| 252 | fprintf(file, |
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| 253 | ";; memory allocation failure\n"); |
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| 254 | return; |
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| 255 | } |
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| 256 | continue; |
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| 257 | } |
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| 258 | fprintf(file, ";; ns_sprintrr: %s\n", |
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| 259 | strerror(errno)); |
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| 260 | goto cleanup; |
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| 261 | } |
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| 262 | fputs(buf, file); |
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| 263 | fputc('\n', file); |
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| 264 | } |
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| 265 | rrnum++; |
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| 266 | } |
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| 267 | cleanup: |
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| 268 | if (buf != NULL) |
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| 269 | free(buf); |
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| 270 | } |
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| 271 | |
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| 272 | /*% |
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| 273 | * Print the contents of a query. |
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| 274 | * This is intended to be primarily a debugging routine. |
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| 275 | */ |
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| 276 | void |
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| 277 | res_pquery(const res_state statp, const u_char *msg, int len, FILE *file) { |
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| 278 | ns_msg handle; |
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| 279 | int qdcount, ancount, nscount, arcount; |
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| 280 | u_int opcode, rcode, id; |
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| 281 | |
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| 282 | if (ns_initparse(msg, len, &handle) < 0) { |
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| 283 | fprintf(file, ";; ns_initparse: %s\n", strerror(errno)); |
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| 284 | return; |
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| 285 | } |
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| 286 | opcode = ns_msg_getflag(handle, ns_f_opcode); |
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| 287 | rcode = ns_msg_getflag(handle, ns_f_rcode); |
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| 288 | id = ns_msg_id(handle); |
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| 289 | qdcount = ns_msg_count(handle, ns_s_qd); |
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| 290 | ancount = ns_msg_count(handle, ns_s_an); |
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| 291 | nscount = ns_msg_count(handle, ns_s_ns); |
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| 292 | arcount = ns_msg_count(handle, ns_s_ar); |
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| 293 | |
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| 294 | /* |
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| 295 | * Print header fields. |
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| 296 | */ |
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| 297 | if ((!statp->pfcode) || (statp->pfcode & RES_PRF_HEADX) || rcode) |
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| 298 | fprintf(file, |
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| 299 | ";; ->>HEADER<<- opcode: %s, status: %s, id: %d\n", |
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| 300 | _res_opcodes[opcode], p_rcode(rcode), id); |
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| 301 | if ((!statp->pfcode) || (statp->pfcode & RES_PRF_HEADX)) |
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| 302 | putc(';', file); |
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| 303 | if ((!statp->pfcode) || (statp->pfcode & RES_PRF_HEAD2)) { |
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| 304 | fprintf(file, "; flags:"); |
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| 305 | if (ns_msg_getflag(handle, ns_f_qr)) |
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| 306 | fprintf(file, " qr"); |
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| 307 | if (ns_msg_getflag(handle, ns_f_aa)) |
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| 308 | fprintf(file, " aa"); |
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| 309 | if (ns_msg_getflag(handle, ns_f_tc)) |
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| 310 | fprintf(file, " tc"); |
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| 311 | if (ns_msg_getflag(handle, ns_f_rd)) |
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| 312 | fprintf(file, " rd"); |
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| 313 | if (ns_msg_getflag(handle, ns_f_ra)) |
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| 314 | fprintf(file, " ra"); |
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| 315 | if (ns_msg_getflag(handle, ns_f_z)) |
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| 316 | fprintf(file, " ??"); |
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| 317 | if (ns_msg_getflag(handle, ns_f_ad)) |
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| 318 | fprintf(file, " ad"); |
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| 319 | if (ns_msg_getflag(handle, ns_f_cd)) |
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| 320 | fprintf(file, " cd"); |
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| 321 | } |
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| 322 | if ((!statp->pfcode) || (statp->pfcode & RES_PRF_HEAD1)) { |
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| 323 | fprintf(file, "; %s: %d", |
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| 324 | p_section(ns_s_qd, opcode), qdcount); |
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| 325 | fprintf(file, ", %s: %d", |
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| 326 | p_section(ns_s_an, opcode), ancount); |
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| 327 | fprintf(file, ", %s: %d", |
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| 328 | p_section(ns_s_ns, opcode), nscount); |
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| 329 | fprintf(file, ", %s: %d", |
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| 330 | p_section(ns_s_ar, opcode), arcount); |
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| 331 | } |
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| 332 | if ((!statp->pfcode) || (statp->pfcode & |
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| 333 | (RES_PRF_HEADX | RES_PRF_HEAD2 | RES_PRF_HEAD1))) { |
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| 334 | putc('\n',file); |
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| 335 | } |
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| 336 | /* |
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| 337 | * Print the various sections. |
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| 338 | */ |
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| 339 | do_section(statp, &handle, ns_s_qd, RES_PRF_QUES, file); |
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| 340 | do_section(statp, &handle, ns_s_an, RES_PRF_ANS, file); |
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| 341 | do_section(statp, &handle, ns_s_ns, RES_PRF_AUTH, file); |
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| 342 | do_section(statp, &handle, ns_s_ar, RES_PRF_ADD, file); |
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| 343 | if (qdcount == 0 && ancount == 0 && |
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| 344 | nscount == 0 && arcount == 0) |
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| 345 | putc('\n', file); |
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| 346 | } |
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| 347 | |
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| 348 | const u_char * |
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| 349 | p_cdnname(const u_char *cp, const u_char *msg, int len, FILE *file) { |
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| 350 | char name[MAXDNAME]; |
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| 351 | int n; |
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| 352 | |
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| 353 | if ((n = dn_expand(msg, msg + len, cp, name, sizeof name)) < 0) |
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| 354 | return (NULL); |
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| 355 | if (name[0] == '\0') |
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| 356 | putc('.', file); |
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| 357 | else |
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| 358 | fputs(name, file); |
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| 359 | return (cp + n); |
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| 360 | } |
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| 361 | |
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| 362 | const u_char * |
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| 363 | p_cdname(const u_char *cp, const u_char *msg, FILE *file) { |
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| 364 | return (p_cdnname(cp, msg, PACKETSZ, file)); |
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| 365 | } |
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| 366 | |
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| 367 | /*% |
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| 368 | * Return a fully-qualified domain name from a compressed name (with |
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| 369 | length supplied). */ |
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| 370 | |
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| 371 | const u_char * |
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| 372 | p_fqnname(cp, msg, msglen, name, namelen) |
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| 373 | const u_char *cp, *msg; |
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| 374 | int msglen; |
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| 375 | char *name; |
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| 376 | int namelen; |
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| 377 | { |
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| 378 | int n, newlen; |
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| 379 | |
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| 380 | if ((n = dn_expand(msg, cp + msglen, cp, name, namelen)) < 0) |
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| 381 | return (NULL); |
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| 382 | newlen = strlen(name); |
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| 383 | if (newlen == 0 || name[newlen - 1] != '.') { |
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| 384 | if (newlen + 1 >= namelen) /*%< Lack space for final dot */ |
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| 385 | return (NULL); |
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| 386 | else |
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| 387 | strcpy(name + newlen, "."); |
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| 388 | } |
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| 389 | return (cp + n); |
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| 390 | } |
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| 391 | |
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| 392 | /* XXX: the rest of these functions need to become length-limited, too. */ |
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| 393 | |
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| 394 | const u_char * |
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| 395 | p_fqname(const u_char *cp, const u_char *msg, FILE *file) { |
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| 396 | char name[MAXDNAME]; |
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| 397 | const u_char *n; |
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| 398 | |
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| 399 | n = p_fqnname(cp, msg, MAXCDNAME, name, sizeof name); |
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| 400 | if (n == NULL) |
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| 401 | return (NULL); |
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| 402 | fputs(name, file); |
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| 403 | return (n); |
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| 404 | } |
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| 405 | |
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| 406 | /*% |
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| 407 | * Names of RR classes and qclasses. Classes and qclasses are the same, except |
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| 408 | * that C_ANY is a qclass but not a class. (You can ask for records of class |
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| 409 | * C_ANY, but you can't have any records of that class in the database.) |
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| 410 | */ |
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| 411 | const struct res_sym __p_class_syms[] = { |
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| 412 | {C_IN, "IN", (char *)0}, |
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| 413 | {C_CHAOS, "CH", (char *)0}, |
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| 414 | {C_CHAOS, "CHAOS", (char *)0}, |
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| 415 | {C_HS, "HS", (char *)0}, |
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| 416 | {C_HS, "HESIOD", (char *)0}, |
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| 417 | {C_ANY, "ANY", (char *)0}, |
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| 418 | {C_NONE, "NONE", (char *)0}, |
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| 419 | {C_IN, (char *)0, (char *)0} |
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| 420 | }; |
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| 421 | |
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| 422 | /*% |
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| 423 | * Names of message sections. |
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| 424 | */ |
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| 425 | static const struct res_sym __p_default_section_syms[] = { |
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| 426 | {ns_s_qd, "QUERY", (char *)0}, |
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| 427 | {ns_s_an, "ANSWER", (char *)0}, |
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| 428 | {ns_s_ns, "AUTHORITY", (char *)0}, |
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| 429 | {ns_s_ar, "ADDITIONAL", (char *)0}, |
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| 430 | {0, (char *)0, (char *)0} |
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| 431 | }; |
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| 432 | |
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| 433 | static const struct res_sym __p_update_section_syms[] = { |
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| 434 | {S_ZONE, "ZONE", (char *)0}, |
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| 435 | {S_PREREQ, "PREREQUISITE", (char *)0}, |
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| 436 | {S_UPDATE, "UPDATE", (char *)0}, |
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| 437 | {S_ADDT, "ADDITIONAL", (char *)0}, |
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| 438 | {0, (char *)0, (char *)0} |
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| 439 | }; |
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| 440 | |
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| 441 | const struct res_sym __p_key_syms[] = { |
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| 442 | {NS_ALG_MD5RSA, "RSA", "RSA KEY with MD5 hash"}, |
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| 443 | {NS_ALG_DH, "DH", "Diffie Hellman"}, |
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| 444 | {NS_ALG_DSA, "DSA", "Digital Signature Algorithm"}, |
---|
| 445 | {NS_ALG_EXPIRE_ONLY, "EXPIREONLY", "No algorithm"}, |
---|
| 446 | {NS_ALG_PRIVATE_OID, "PRIVATE", "Algorithm obtained from OID"}, |
---|
| 447 | {0, NULL, NULL} |
---|
| 448 | }; |
---|
| 449 | |
---|
| 450 | const struct res_sym __p_cert_syms[] = { |
---|
| 451 | {cert_t_pkix, "PKIX", "PKIX (X.509v3) Certificate"}, |
---|
| 452 | {cert_t_spki, "SPKI", "SPKI certificate"}, |
---|
| 453 | {cert_t_pgp, "PGP", "PGP certificate"}, |
---|
| 454 | {cert_t_url, "URL", "URL Private"}, |
---|
| 455 | {cert_t_oid, "OID", "OID Private"}, |
---|
| 456 | {0, NULL, NULL} |
---|
| 457 | }; |
---|
| 458 | |
---|
| 459 | /*% |
---|
| 460 | * Names of RR types and qtypes. Types and qtypes are the same, except |
---|
| 461 | * that T_ANY is a qtype but not a type. (You can ask for records of type |
---|
| 462 | * T_ANY, but you can't have any records of that type in the database.) |
---|
| 463 | */ |
---|
| 464 | const struct res_sym __p_type_syms[] = { |
---|
| 465 | {ns_t_a, "A", "address"}, |
---|
| 466 | {ns_t_ns, "NS", "name server"}, |
---|
| 467 | {ns_t_md, "MD", "mail destination (deprecated)"}, |
---|
| 468 | {ns_t_mf, "MF", "mail forwarder (deprecated)"}, |
---|
| 469 | {ns_t_cname, "CNAME", "canonical name"}, |
---|
| 470 | {ns_t_soa, "SOA", "start of authority"}, |
---|
| 471 | {ns_t_mb, "MB", "mailbox"}, |
---|
| 472 | {ns_t_mg, "MG", "mail group member"}, |
---|
| 473 | {ns_t_mr, "MR", "mail rename"}, |
---|
| 474 | {ns_t_null, "NULL", "null"}, |
---|
| 475 | {ns_t_wks, "WKS", "well-known service (deprecated)"}, |
---|
| 476 | {ns_t_ptr, "PTR", "domain name pointer"}, |
---|
| 477 | {ns_t_hinfo, "HINFO", "host information"}, |
---|
| 478 | {ns_t_minfo, "MINFO", "mailbox information"}, |
---|
| 479 | {ns_t_mx, "MX", "mail exchanger"}, |
---|
| 480 | {ns_t_txt, "TXT", "text"}, |
---|
| 481 | {ns_t_rp, "RP", "responsible person"}, |
---|
| 482 | {ns_t_afsdb, "AFSDB", "DCE or AFS server"}, |
---|
| 483 | {ns_t_x25, "X25", "X25 address"}, |
---|
| 484 | {ns_t_isdn, "ISDN", "ISDN address"}, |
---|
| 485 | {ns_t_rt, "RT", "router"}, |
---|
| 486 | {ns_t_nsap, "NSAP", "nsap address"}, |
---|
| 487 | {ns_t_nsap_ptr, "NSAP_PTR", "domain name pointer"}, |
---|
| 488 | {ns_t_sig, "SIG", "signature"}, |
---|
| 489 | {ns_t_key, "KEY", "key"}, |
---|
| 490 | {ns_t_px, "PX", "mapping information"}, |
---|
| 491 | {ns_t_gpos, "GPOS", "geographical position (withdrawn)"}, |
---|
| 492 | {ns_t_aaaa, "AAAA", "IPv6 address"}, |
---|
| 493 | {ns_t_loc, "LOC", "location"}, |
---|
| 494 | {ns_t_nxt, "NXT", "next valid name (unimplemented)"}, |
---|
| 495 | {ns_t_eid, "EID", "endpoint identifier (unimplemented)"}, |
---|
| 496 | {ns_t_nimloc, "NIMLOC", "NIMROD locator (unimplemented)"}, |
---|
| 497 | {ns_t_srv, "SRV", "server selection"}, |
---|
| 498 | {ns_t_atma, "ATMA", "ATM address (unimplemented)"}, |
---|
| 499 | {ns_t_tkey, "TKEY", "tkey"}, |
---|
| 500 | {ns_t_tsig, "TSIG", "transaction signature"}, |
---|
| 501 | {ns_t_ixfr, "IXFR", "incremental zone transfer"}, |
---|
| 502 | {ns_t_axfr, "AXFR", "zone transfer"}, |
---|
| 503 | {ns_t_zxfr, "ZXFR", "compressed zone transfer"}, |
---|
| 504 | {ns_t_mailb, "MAILB", "mailbox-related data (deprecated)"}, |
---|
| 505 | {ns_t_maila, "MAILA", "mail agent (deprecated)"}, |
---|
| 506 | {ns_t_naptr, "NAPTR", "URN Naming Authority"}, |
---|
| 507 | {ns_t_kx, "KX", "Key Exchange"}, |
---|
| 508 | {ns_t_cert, "CERT", "Certificate"}, |
---|
| 509 | {ns_t_a6, "A6", "IPv6 Address"}, |
---|
| 510 | {ns_t_dname, "DNAME", "dname"}, |
---|
| 511 | {ns_t_sink, "SINK", "Kitchen Sink (experimental)"}, |
---|
| 512 | {ns_t_opt, "OPT", "EDNS Options"}, |
---|
| 513 | {ns_t_any, "ANY", "\"any\""}, |
---|
| 514 | {0, NULL, NULL} |
---|
| 515 | }; |
---|
| 516 | |
---|
| 517 | /*% |
---|
| 518 | * Names of DNS rcodes. |
---|
| 519 | */ |
---|
| 520 | const struct res_sym __p_rcode_syms[] = { |
---|
| 521 | {ns_r_noerror, "NOERROR", "no error"}, |
---|
| 522 | {ns_r_formerr, "FORMERR", "format error"}, |
---|
| 523 | {ns_r_servfail, "SERVFAIL", "server failed"}, |
---|
| 524 | {ns_r_nxdomain, "NXDOMAIN", "no such domain name"}, |
---|
| 525 | {ns_r_notimpl, "NOTIMP", "not implemented"}, |
---|
| 526 | {ns_r_refused, "REFUSED", "refused"}, |
---|
| 527 | {ns_r_yxdomain, "YXDOMAIN", "domain name exists"}, |
---|
| 528 | {ns_r_yxrrset, "YXRRSET", "rrset exists"}, |
---|
| 529 | {ns_r_nxrrset, "NXRRSET", "rrset doesn't exist"}, |
---|
| 530 | {ns_r_notauth, "NOTAUTH", "not authoritative"}, |
---|
| 531 | {ns_r_notzone, "NOTZONE", "Not in zone"}, |
---|
| 532 | {ns_r_max, "", ""}, |
---|
| 533 | {ns_r_badsig, "BADSIG", "bad signature"}, |
---|
| 534 | {ns_r_badkey, "BADKEY", "bad key"}, |
---|
| 535 | {ns_r_badtime, "BADTIME", "bad time"}, |
---|
| 536 | {0, NULL, NULL} |
---|
| 537 | }; |
---|
| 538 | |
---|
| 539 | int |
---|
| 540 | sym_ston(const struct res_sym *syms, const char *name, int *success) { |
---|
| 541 | for ((void)NULL; syms->name != 0; syms++) { |
---|
| 542 | if (strcasecmp (name, syms->name) == 0) { |
---|
| 543 | if (success) |
---|
| 544 | *success = 1; |
---|
| 545 | return (syms->number); |
---|
| 546 | } |
---|
| 547 | } |
---|
| 548 | if (success) |
---|
| 549 | *success = 0; |
---|
| 550 | return (syms->number); /*%< The default value. */ |
---|
| 551 | } |
---|
| 552 | |
---|
| 553 | const char * |
---|
| 554 | sym_ntos(const struct res_sym *syms, int number, int *success) { |
---|
| 555 | char *unname = sym_ntos_unname; |
---|
| 556 | |
---|
| 557 | for ((void)NULL; syms->name != 0; syms++) { |
---|
| 558 | if (number == syms->number) { |
---|
| 559 | if (success) |
---|
| 560 | *success = 1; |
---|
| 561 | return (syms->name); |
---|
| 562 | } |
---|
| 563 | } |
---|
| 564 | |
---|
| 565 | sprintf(unname, "%d", number); /*%< XXX nonreentrant */ |
---|
| 566 | if (success) |
---|
| 567 | *success = 0; |
---|
| 568 | return (unname); |
---|
| 569 | } |
---|
| 570 | |
---|
| 571 | const char * |
---|
| 572 | sym_ntop(const struct res_sym *syms, int number, int *success) { |
---|
| 573 | char *unname = sym_ntop_unname; |
---|
| 574 | |
---|
| 575 | for ((void)NULL; syms->name != 0; syms++) { |
---|
| 576 | if (number == syms->number) { |
---|
| 577 | if (success) |
---|
| 578 | *success = 1; |
---|
| 579 | return (syms->humanname); |
---|
| 580 | } |
---|
| 581 | } |
---|
| 582 | sprintf(unname, "%d", number); /*%< XXX nonreentrant */ |
---|
| 583 | if (success) |
---|
| 584 | *success = 0; |
---|
| 585 | return (unname); |
---|
| 586 | } |
---|
| 587 | |
---|
| 588 | /*% |
---|
| 589 | * Return a string for the type. |
---|
| 590 | */ |
---|
| 591 | const char * |
---|
| 592 | p_type(int type) { |
---|
| 593 | int success; |
---|
| 594 | const char *result; |
---|
| 595 | static char typebuf[20]; |
---|
| 596 | |
---|
| 597 | result = sym_ntos(__p_type_syms, type, &success); |
---|
| 598 | if (success) |
---|
| 599 | return (result); |
---|
| 600 | if (type < 0 || type > 0xffff) |
---|
| 601 | return ("BADTYPE"); |
---|
| 602 | sprintf(typebuf, "TYPE%d", type); |
---|
| 603 | return (typebuf); |
---|
| 604 | } |
---|
| 605 | |
---|
| 606 | /*% |
---|
| 607 | * Return a string for the type. |
---|
| 608 | */ |
---|
| 609 | const char * |
---|
| 610 | p_section(int section, int opcode) { |
---|
| 611 | const struct res_sym *symbols; |
---|
| 612 | |
---|
| 613 | switch (opcode) { |
---|
| 614 | case ns_o_update: |
---|
| 615 | symbols = __p_update_section_syms; |
---|
| 616 | break; |
---|
| 617 | default: |
---|
| 618 | symbols = __p_default_section_syms; |
---|
| 619 | break; |
---|
| 620 | } |
---|
| 621 | return (sym_ntos(symbols, section, (int *)0)); |
---|
| 622 | } |
---|
| 623 | |
---|
| 624 | /*% |
---|
| 625 | * Return a mnemonic for class. |
---|
| 626 | */ |
---|
| 627 | const char * |
---|
| 628 | p_class(int class) { |
---|
| 629 | int success; |
---|
| 630 | const char *result; |
---|
| 631 | static char classbuf[20]; |
---|
| 632 | |
---|
| 633 | result = sym_ntos(__p_class_syms, class, &success); |
---|
| 634 | if (success) |
---|
| 635 | return (result); |
---|
| 636 | if (class < 0 || class > 0xffff) |
---|
| 637 | return ("BADCLASS"); |
---|
| 638 | sprintf(classbuf, "CLASS%d", class); |
---|
| 639 | return (classbuf); |
---|
| 640 | } |
---|
| 641 | |
---|
| 642 | /*% |
---|
| 643 | * Return a mnemonic for an option |
---|
| 644 | */ |
---|
| 645 | const char * |
---|
| 646 | p_option(u_long option) { |
---|
| 647 | char *nbuf = p_option_nbuf; |
---|
| 648 | |
---|
| 649 | switch (option) { |
---|
| 650 | case RES_INIT: return "init"; |
---|
| 651 | case RES_DEBUG: return "debug"; |
---|
| 652 | case RES_AAONLY: return "aaonly(unimpl)"; |
---|
| 653 | case RES_USEVC: return "usevc"; |
---|
| 654 | case RES_PRIMARY: return "primry(unimpl)"; |
---|
| 655 | case RES_IGNTC: return "igntc"; |
---|
| 656 | case RES_RECURSE: return "recurs"; |
---|
| 657 | case RES_DEFNAMES: return "defnam"; |
---|
| 658 | case RES_STAYOPEN: return "styopn"; |
---|
| 659 | case RES_DNSRCH: return "dnsrch"; |
---|
| 660 | case RES_INSECURE1: return "insecure1"; |
---|
| 661 | case RES_INSECURE2: return "insecure2"; |
---|
| 662 | case RES_NOALIASES: return "noaliases"; |
---|
| 663 | case RES_USE_INET6: return "inet6"; |
---|
| 664 | #ifdef RES_USE_EDNS0 /*%< KAME extension */ |
---|
| 665 | case RES_USE_EDNS0: return "edns0"; |
---|
| 666 | case RES_NSID: return "nsid"; |
---|
| 667 | #endif |
---|
| 668 | #ifdef RES_USE_DNAME |
---|
| 669 | case RES_USE_DNAME: return "dname"; |
---|
| 670 | #endif |
---|
| 671 | #ifdef RES_USE_DNSSEC |
---|
| 672 | case RES_USE_DNSSEC: return "dnssec"; |
---|
| 673 | #endif |
---|
| 674 | #ifdef RES_NOTLDQUERY |
---|
| 675 | case RES_NOTLDQUERY: return "no-tld-query"; |
---|
| 676 | #endif |
---|
| 677 | #ifdef RES_NO_NIBBLE2 |
---|
| 678 | case RES_NO_NIBBLE2: return "no-nibble2"; |
---|
| 679 | #endif |
---|
| 680 | /* XXX nonreentrant */ |
---|
| 681 | default: sprintf(nbuf, "?0x%lx?", (u_long)option); |
---|
| 682 | return (nbuf); |
---|
| 683 | } |
---|
| 684 | } |
---|
| 685 | |
---|
| 686 | /*% |
---|
| 687 | * Return a mnemonic for a time to live. |
---|
| 688 | */ |
---|
| 689 | const char * |
---|
| 690 | p_time(u_int32_t value) { |
---|
| 691 | char *nbuf = p_time_nbuf; |
---|
| 692 | |
---|
| 693 | if (ns_format_ttl(value, nbuf, sizeof nbuf) < 0) |
---|
| 694 | sprintf(nbuf, "%u", value); |
---|
| 695 | return (nbuf); |
---|
| 696 | } |
---|
| 697 | |
---|
| 698 | /*% |
---|
| 699 | * Return a string for the rcode. |
---|
| 700 | */ |
---|
| 701 | const char * |
---|
| 702 | p_rcode(int rcode) { |
---|
| 703 | return (sym_ntos(__p_rcode_syms, rcode, (int *)0)); |
---|
| 704 | } |
---|
| 705 | |
---|
| 706 | /*% |
---|
| 707 | * Return a string for a res_sockaddr_union. |
---|
| 708 | */ |
---|
| 709 | const char * |
---|
| 710 | p_sockun(union res_sockaddr_union u, char *buf, size_t size) { |
---|
| 711 | char ret[sizeof "ffff:ffff:ffff:ffff:ffff:ffff:123.123.123.123"]; |
---|
| 712 | |
---|
| 713 | switch (u.sin.sin_family) { |
---|
| 714 | case AF_INET: |
---|
| 715 | inet_ntop(AF_INET, &u.sin.sin_addr, ret, sizeof ret); |
---|
| 716 | break; |
---|
| 717 | #ifdef HAS_INET6_STRUCTS |
---|
| 718 | case AF_INET6: |
---|
| 719 | inet_ntop(AF_INET6, &u.sin6.sin6_addr, ret, sizeof ret); |
---|
| 720 | break; |
---|
| 721 | #endif |
---|
| 722 | default: |
---|
| 723 | sprintf(ret, "[af%d]", u.sin.sin_family); |
---|
| 724 | break; |
---|
| 725 | } |
---|
| 726 | if (size > 0U) { |
---|
| 727 | strncpy(buf, ret, size - 1); |
---|
| 728 | buf[size - 1] = '0'; |
---|
| 729 | } |
---|
| 730 | return (buf); |
---|
| 731 | } |
---|
| 732 | |
---|
| 733 | /*% |
---|
| 734 | * routines to convert between on-the-wire RR format and zone file format. |
---|
| 735 | * Does not contain conversion to/from decimal degrees; divide or multiply |
---|
| 736 | * by 60*60*1000 for that. |
---|
| 737 | */ |
---|
| 738 | |
---|
| 739 | static unsigned int poweroften[10] = {1, 10, 100, 1000, 10000, 100000, |
---|
| 740 | 1000000,10000000,100000000,1000000000}; |
---|
| 741 | |
---|
| 742 | /*% takes an XeY precision/size value, returns a string representation. */ |
---|
| 743 | static const char * |
---|
| 744 | precsize_ntoa(prec) |
---|
| 745 | u_int8_t prec; |
---|
| 746 | { |
---|
| 747 | char *retbuf = precsize_ntoa_retbuf; |
---|
| 748 | unsigned long val; |
---|
| 749 | int mantissa, exponent; |
---|
| 750 | |
---|
| 751 | mantissa = (int)((prec >> 4) & 0x0f) % 10; |
---|
| 752 | exponent = (int)((prec >> 0) & 0x0f) % 10; |
---|
| 753 | |
---|
| 754 | val = mantissa * poweroften[exponent]; |
---|
| 755 | |
---|
| 756 | (void) sprintf(retbuf, "%lu.%.2lu", val/100, val%100); |
---|
| 757 | return (retbuf); |
---|
| 758 | } |
---|
| 759 | |
---|
| 760 | /*% converts ascii size/precision X * 10**Y(cm) to 0xXY. moves pointer. */ |
---|
| 761 | static u_int8_t |
---|
| 762 | precsize_aton(const char **strptr) { |
---|
| 763 | unsigned int mval = 0, cmval = 0; |
---|
| 764 | u_int8_t retval = 0; |
---|
| 765 | const char *cp; |
---|
| 766 | int exponent; |
---|
| 767 | int mantissa; |
---|
| 768 | |
---|
| 769 | cp = *strptr; |
---|
| 770 | |
---|
| 771 | while (isdigit((unsigned char)*cp)) |
---|
| 772 | mval = mval * 10 + (*cp++ - '0'); |
---|
| 773 | |
---|
| 774 | if (*cp == '.') { /*%< centimeters */ |
---|
| 775 | cp++; |
---|
| 776 | if (isdigit((unsigned char)*cp)) { |
---|
| 777 | cmval = (*cp++ - '0') * 10; |
---|
| 778 | if (isdigit((unsigned char)*cp)) { |
---|
| 779 | cmval += (*cp++ - '0'); |
---|
| 780 | } |
---|
| 781 | } |
---|
| 782 | } |
---|
| 783 | cmval = (mval * 100) + cmval; |
---|
| 784 | |
---|
| 785 | for (exponent = 0; exponent < 9; exponent++) |
---|
| 786 | if (cmval < poweroften[exponent+1]) |
---|
| 787 | break; |
---|
| 788 | |
---|
| 789 | mantissa = cmval / poweroften[exponent]; |
---|
| 790 | if (mantissa > 9) |
---|
| 791 | mantissa = 9; |
---|
| 792 | |
---|
| 793 | retval = (mantissa << 4) | exponent; |
---|
| 794 | |
---|
| 795 | *strptr = cp; |
---|
| 796 | |
---|
| 797 | return (retval); |
---|
| 798 | } |
---|
| 799 | |
---|
| 800 | /*% converts ascii lat/lon to unsigned encoded 32-bit number. moves pointer. */ |
---|
| 801 | static u_int32_t |
---|
| 802 | latlon2ul(const char **latlonstrptr, int *which) { |
---|
| 803 | const char *cp; |
---|
| 804 | u_int32_t retval; |
---|
| 805 | int deg = 0, min = 0, secs = 0, secsfrac = 0; |
---|
| 806 | |
---|
| 807 | cp = *latlonstrptr; |
---|
| 808 | |
---|
| 809 | while (isdigit((unsigned char)*cp)) |
---|
| 810 | deg = deg * 10 + (*cp++ - '0'); |
---|
| 811 | |
---|
| 812 | while (isspace((unsigned char)*cp)) |
---|
| 813 | cp++; |
---|
| 814 | |
---|
| 815 | if (!(isdigit((unsigned char)*cp))) |
---|
| 816 | goto fndhemi; |
---|
| 817 | |
---|
| 818 | while (isdigit((unsigned char)*cp)) |
---|
| 819 | min = min * 10 + (*cp++ - '0'); |
---|
| 820 | |
---|
| 821 | while (isspace((unsigned char)*cp)) |
---|
| 822 | cp++; |
---|
| 823 | |
---|
| 824 | if (!(isdigit((unsigned char)*cp))) |
---|
| 825 | goto fndhemi; |
---|
| 826 | |
---|
| 827 | while (isdigit((unsigned char)*cp)) |
---|
| 828 | secs = secs * 10 + (*cp++ - '0'); |
---|
| 829 | |
---|
| 830 | if (*cp == '.') { /*%< decimal seconds */ |
---|
| 831 | cp++; |
---|
| 832 | if (isdigit((unsigned char)*cp)) { |
---|
| 833 | secsfrac = (*cp++ - '0') * 100; |
---|
| 834 | if (isdigit((unsigned char)*cp)) { |
---|
| 835 | secsfrac += (*cp++ - '0') * 10; |
---|
| 836 | if (isdigit((unsigned char)*cp)) { |
---|
| 837 | secsfrac += (*cp++ - '0'); |
---|
| 838 | } |
---|
| 839 | } |
---|
| 840 | } |
---|
| 841 | } |
---|
| 842 | |
---|
| 843 | while (!isspace((unsigned char)*cp)) /*%< if any trailing garbage */ |
---|
| 844 | cp++; |
---|
| 845 | |
---|
| 846 | while (isspace((unsigned char)*cp)) |
---|
| 847 | cp++; |
---|
| 848 | |
---|
| 849 | fndhemi: |
---|
| 850 | switch (*cp) { |
---|
| 851 | case 'N': case 'n': |
---|
| 852 | case 'E': case 'e': |
---|
| 853 | retval = ((unsigned)1<<31) |
---|
| 854 | + (((((deg * 60) + min) * 60) + secs) * 1000) |
---|
| 855 | + secsfrac; |
---|
| 856 | break; |
---|
| 857 | case 'S': case 's': |
---|
| 858 | case 'W': case 'w': |
---|
| 859 | retval = ((unsigned)1<<31) |
---|
| 860 | - (((((deg * 60) + min) * 60) + secs) * 1000) |
---|
| 861 | - secsfrac; |
---|
| 862 | break; |
---|
| 863 | default: |
---|
| 864 | retval = 0; /*%< invalid value -- indicates error */ |
---|
| 865 | break; |
---|
| 866 | } |
---|
| 867 | |
---|
| 868 | switch (*cp) { |
---|
| 869 | case 'N': case 'n': |
---|
| 870 | case 'S': case 's': |
---|
| 871 | *which = 1; /*%< latitude */ |
---|
| 872 | break; |
---|
| 873 | case 'E': case 'e': |
---|
| 874 | case 'W': case 'w': |
---|
| 875 | *which = 2; /*%< longitude */ |
---|
| 876 | break; |
---|
| 877 | default: |
---|
| 878 | *which = 0; /*%< error */ |
---|
| 879 | break; |
---|
| 880 | } |
---|
| 881 | |
---|
| 882 | cp++; /*%< skip the hemisphere */ |
---|
| 883 | while (!isspace((unsigned char)*cp)) /*%< if any trailing garbage */ |
---|
| 884 | cp++; |
---|
| 885 | |
---|
| 886 | while (isspace((unsigned char)*cp)) /*%< move to next field */ |
---|
| 887 | cp++; |
---|
| 888 | |
---|
| 889 | *latlonstrptr = cp; |
---|
| 890 | |
---|
| 891 | return (retval); |
---|
| 892 | } |
---|
| 893 | |
---|
| 894 | /*% |
---|
| 895 | * converts a zone file representation in a string to an RDATA on-the-wire |
---|
| 896 | * representation. */ |
---|
| 897 | int |
---|
| 898 | loc_aton(ascii, binary) |
---|
| 899 | const char *ascii; |
---|
| 900 | u_char *binary; |
---|
| 901 | { |
---|
| 902 | const char *cp, *maxcp; |
---|
| 903 | u_char *bcp; |
---|
| 904 | |
---|
| 905 | u_int32_t latit = 0, longit = 0, alt = 0; |
---|
| 906 | u_int32_t lltemp1 = 0, lltemp2 = 0; |
---|
| 907 | int altmeters = 0, altfrac = 0, altsign = 1; |
---|
| 908 | u_int8_t hp = 0x16; /*%< default = 1e6 cm = 10000.00m = 10km */ |
---|
| 909 | u_int8_t vp = 0x13; /*%< default = 1e3 cm = 10.00m */ |
---|
| 910 | u_int8_t siz = 0x12; /*%< default = 1e2 cm = 1.00m */ |
---|
| 911 | int which1 = 0, which2 = 0; |
---|
| 912 | |
---|
| 913 | cp = ascii; |
---|
| 914 | maxcp = cp + strlen(ascii); |
---|
| 915 | |
---|
| 916 | lltemp1 = latlon2ul(&cp, &which1); |
---|
| 917 | |
---|
| 918 | lltemp2 = latlon2ul(&cp, &which2); |
---|
| 919 | |
---|
| 920 | switch (which1 + which2) { |
---|
| 921 | case 3: /*%< 1 + 2, the only valid combination */ |
---|
| 922 | if ((which1 == 1) && (which2 == 2)) { /*%< normal case */ |
---|
| 923 | latit = lltemp1; |
---|
| 924 | longit = lltemp2; |
---|
| 925 | } else if ((which1 == 2) && (which2 == 1)) { /*%< reversed */ |
---|
| 926 | longit = lltemp1; |
---|
| 927 | latit = lltemp2; |
---|
| 928 | } else { /*%< some kind of brokenness */ |
---|
| 929 | return (0); |
---|
| 930 | } |
---|
| 931 | break; |
---|
| 932 | default: /*%< we didn't get one of each */ |
---|
| 933 | return (0); |
---|
| 934 | } |
---|
| 935 | |
---|
| 936 | /* altitude */ |
---|
| 937 | if (*cp == '-') { |
---|
| 938 | altsign = -1; |
---|
| 939 | cp++; |
---|
| 940 | } |
---|
| 941 | |
---|
| 942 | if (*cp == '+') |
---|
| 943 | cp++; |
---|
| 944 | |
---|
| 945 | while (isdigit((unsigned char)*cp)) |
---|
| 946 | altmeters = altmeters * 10 + (*cp++ - '0'); |
---|
| 947 | |
---|
| 948 | if (*cp == '.') { /*%< decimal meters */ |
---|
| 949 | cp++; |
---|
| 950 | if (isdigit((unsigned char)*cp)) { |
---|
| 951 | altfrac = (*cp++ - '0') * 10; |
---|
| 952 | if (isdigit((unsigned char)*cp)) { |
---|
| 953 | altfrac += (*cp++ - '0'); |
---|
| 954 | } |
---|
| 955 | } |
---|
| 956 | } |
---|
| 957 | |
---|
| 958 | alt = (10000000 + (altsign * (altmeters * 100 + altfrac))); |
---|
| 959 | |
---|
| 960 | while (!isspace((unsigned char)*cp) && (cp < maxcp)) /*%< if trailing garbage or m */ |
---|
| 961 | cp++; |
---|
| 962 | |
---|
| 963 | while (isspace((unsigned char)*cp) && (cp < maxcp)) |
---|
| 964 | cp++; |
---|
| 965 | |
---|
| 966 | if (cp >= maxcp) |
---|
| 967 | goto defaults; |
---|
| 968 | |
---|
| 969 | siz = precsize_aton(&cp); |
---|
| 970 | |
---|
| 971 | while (!isspace((unsigned char)*cp) && (cp < maxcp)) /*%< if trailing garbage or m */ |
---|
| 972 | cp++; |
---|
| 973 | |
---|
| 974 | while (isspace((unsigned char)*cp) && (cp < maxcp)) |
---|
| 975 | cp++; |
---|
| 976 | |
---|
| 977 | if (cp >= maxcp) |
---|
| 978 | goto defaults; |
---|
| 979 | |
---|
| 980 | hp = precsize_aton(&cp); |
---|
| 981 | |
---|
| 982 | while (!isspace((unsigned char)*cp) && (cp < maxcp)) /*%< if trailing garbage or m */ |
---|
| 983 | cp++; |
---|
| 984 | |
---|
| 985 | while (isspace((unsigned char)*cp) && (cp < maxcp)) |
---|
| 986 | cp++; |
---|
| 987 | |
---|
| 988 | if (cp >= maxcp) |
---|
| 989 | goto defaults; |
---|
| 990 | |
---|
| 991 | vp = precsize_aton(&cp); |
---|
| 992 | |
---|
| 993 | defaults: |
---|
| 994 | |
---|
| 995 | bcp = binary; |
---|
| 996 | *bcp++ = (u_int8_t) 0; /*%< version byte */ |
---|
| 997 | *bcp++ = siz; |
---|
| 998 | *bcp++ = hp; |
---|
| 999 | *bcp++ = vp; |
---|
| 1000 | PUTLONG(latit,bcp); |
---|
| 1001 | PUTLONG(longit,bcp); |
---|
| 1002 | PUTLONG(alt,bcp); |
---|
| 1003 | |
---|
| 1004 | return (16); /*%< size of RR in octets */ |
---|
| 1005 | } |
---|
| 1006 | |
---|
| 1007 | /*% takes an on-the-wire LOC RR and formats it in a human readable format. */ |
---|
| 1008 | const char * |
---|
| 1009 | loc_ntoa(binary, ascii) |
---|
| 1010 | const u_char *binary; |
---|
| 1011 | char *ascii; |
---|
| 1012 | { |
---|
| 1013 | static const char *error = "?"; |
---|
| 1014 | static char tmpbuf[sizeof |
---|
| 1015 | "1000 60 60.000 N 1000 60 60.000 W -12345678.00m 90000000.00m 90000000.00m 90000000.00m"]; |
---|
| 1016 | const u_char *cp = binary; |
---|
| 1017 | |
---|
| 1018 | int latdeg, latmin, latsec, latsecfrac; |
---|
| 1019 | int longdeg, longmin, longsec, longsecfrac; |
---|
| 1020 | char northsouth, eastwest; |
---|
| 1021 | const char *altsign; |
---|
| 1022 | int altmeters, altfrac; |
---|
| 1023 | |
---|
| 1024 | const u_int32_t referencealt = 100000 * 100; |
---|
| 1025 | |
---|
| 1026 | int32_t latval, longval, altval; |
---|
| 1027 | u_int32_t templ; |
---|
| 1028 | u_int8_t sizeval, hpval, vpval, versionval; |
---|
| 1029 | |
---|
| 1030 | char *sizestr, *hpstr, *vpstr; |
---|
| 1031 | |
---|
| 1032 | versionval = *cp++; |
---|
| 1033 | |
---|
| 1034 | if (ascii == NULL) |
---|
| 1035 | ascii = tmpbuf; |
---|
| 1036 | |
---|
| 1037 | if (versionval) { |
---|
| 1038 | (void) sprintf(ascii, "; error: unknown LOC RR version"); |
---|
| 1039 | return (ascii); |
---|
| 1040 | } |
---|
| 1041 | |
---|
| 1042 | sizeval = *cp++; |
---|
| 1043 | |
---|
| 1044 | hpval = *cp++; |
---|
| 1045 | vpval = *cp++; |
---|
| 1046 | |
---|
| 1047 | GETLONG(templ, cp); |
---|
| 1048 | latval = (templ - ((unsigned)1<<31)); |
---|
| 1049 | |
---|
| 1050 | GETLONG(templ, cp); |
---|
| 1051 | longval = (templ - ((unsigned)1<<31)); |
---|
| 1052 | |
---|
| 1053 | GETLONG(templ, cp); |
---|
| 1054 | if (templ < referencealt) { /*%< below WGS 84 spheroid */ |
---|
| 1055 | altval = referencealt - templ; |
---|
| 1056 | altsign = "-"; |
---|
| 1057 | } else { |
---|
| 1058 | altval = templ - referencealt; |
---|
| 1059 | altsign = ""; |
---|
| 1060 | } |
---|
| 1061 | |
---|
| 1062 | if (latval < 0) { |
---|
| 1063 | northsouth = 'S'; |
---|
| 1064 | latval = -latval; |
---|
| 1065 | } else |
---|
| 1066 | northsouth = 'N'; |
---|
| 1067 | |
---|
| 1068 | latsecfrac = latval % 1000; |
---|
| 1069 | latval = latval / 1000; |
---|
| 1070 | latsec = latval % 60; |
---|
| 1071 | latval = latval / 60; |
---|
| 1072 | latmin = latval % 60; |
---|
| 1073 | latval = latval / 60; |
---|
| 1074 | latdeg = latval; |
---|
| 1075 | |
---|
| 1076 | if (longval < 0) { |
---|
| 1077 | eastwest = 'W'; |
---|
| 1078 | longval = -longval; |
---|
| 1079 | } else |
---|
| 1080 | eastwest = 'E'; |
---|
| 1081 | |
---|
| 1082 | longsecfrac = longval % 1000; |
---|
| 1083 | longval = longval / 1000; |
---|
| 1084 | longsec = longval % 60; |
---|
| 1085 | longval = longval / 60; |
---|
| 1086 | longmin = longval % 60; |
---|
| 1087 | longval = longval / 60; |
---|
| 1088 | longdeg = longval; |
---|
| 1089 | |
---|
| 1090 | altfrac = altval % 100; |
---|
| 1091 | altmeters = (altval / 100); |
---|
| 1092 | |
---|
| 1093 | sizestr = strdup(precsize_ntoa(sizeval)); |
---|
| 1094 | hpstr = strdup(precsize_ntoa(hpval)); |
---|
| 1095 | vpstr = strdup(precsize_ntoa(vpval)); |
---|
| 1096 | |
---|
| 1097 | sprintf(ascii, |
---|
| 1098 | "%d %.2d %.2d.%.3d %c %d %.2d %.2d.%.3d %c %s%d.%.2dm %sm %sm %sm", |
---|
| 1099 | latdeg, latmin, latsec, latsecfrac, northsouth, |
---|
| 1100 | longdeg, longmin, longsec, longsecfrac, eastwest, |
---|
| 1101 | altsign, altmeters, altfrac, |
---|
| 1102 | (sizestr != NULL) ? sizestr : error, |
---|
| 1103 | (hpstr != NULL) ? hpstr : error, |
---|
| 1104 | (vpstr != NULL) ? vpstr : error); |
---|
| 1105 | |
---|
| 1106 | if (sizestr != NULL) |
---|
| 1107 | free(sizestr); |
---|
| 1108 | if (hpstr != NULL) |
---|
| 1109 | free(hpstr); |
---|
| 1110 | if (vpstr != NULL) |
---|
| 1111 | free(vpstr); |
---|
| 1112 | |
---|
| 1113 | return (ascii); |
---|
| 1114 | } |
---|
| 1115 | |
---|
| 1116 | |
---|
| 1117 | /*% Return the number of DNS hierarchy levels in the name. */ |
---|
| 1118 | int |
---|
| 1119 | dn_count_labels(const char *name) { |
---|
| 1120 | int i, len, count; |
---|
| 1121 | |
---|
| 1122 | len = strlen(name); |
---|
| 1123 | for (i = 0, count = 0; i < len; i++) { |
---|
| 1124 | /* XXX need to check for \. or use named's nlabels(). */ |
---|
| 1125 | if (name[i] == '.') |
---|
| 1126 | count++; |
---|
| 1127 | } |
---|
| 1128 | |
---|
| 1129 | /* don't count initial wildcard */ |
---|
| 1130 | if (name[0] == '*') |
---|
| 1131 | if (count) |
---|
| 1132 | count--; |
---|
| 1133 | |
---|
| 1134 | /* don't count the null label for root. */ |
---|
| 1135 | /* if terminating '.' not found, must adjust */ |
---|
| 1136 | /* count to include last label */ |
---|
| 1137 | if (len > 0 && name[len-1] != '.') |
---|
| 1138 | count++; |
---|
| 1139 | return (count); |
---|
| 1140 | } |
---|
| 1141 | |
---|
| 1142 | /*% |
---|
| 1143 | * Make dates expressed in seconds-since-Jan-1-1970 easy to read. |
---|
| 1144 | * SIG records are required to be printed like this, by the Secure DNS RFC. |
---|
| 1145 | */ |
---|
| 1146 | char * |
---|
| 1147 | p_secstodate (u_long secs) { |
---|
| 1148 | char *output = p_secstodate_output; |
---|
| 1149 | time_t clock = secs; |
---|
| 1150 | struct tm *time; |
---|
| 1151 | #ifdef HAVE_TIME_R |
---|
| 1152 | struct tm res; |
---|
| 1153 | |
---|
| 1154 | time = gmtime_r(&clock, &res); |
---|
| 1155 | #else |
---|
| 1156 | time = gmtime(&clock); |
---|
| 1157 | #endif |
---|
| 1158 | time->tm_year += 1900; |
---|
| 1159 | time->tm_mon += 1; |
---|
| 1160 | sprintf(output, "%04d%02d%02d%02d%02d%02d", |
---|
| 1161 | time->tm_year, time->tm_mon, time->tm_mday, |
---|
| 1162 | time->tm_hour, time->tm_min, time->tm_sec); |
---|
| 1163 | return (output); |
---|
| 1164 | } |
---|
| 1165 | |
---|
| 1166 | u_int16_t |
---|
| 1167 | res_nametoclass(const char *buf, int *successp) { |
---|
| 1168 | unsigned long result; |
---|
| 1169 | char *endptr; |
---|
| 1170 | int success; |
---|
| 1171 | |
---|
| 1172 | result = sym_ston(__p_class_syms, buf, &success); |
---|
| 1173 | if (success) |
---|
| 1174 | goto done; |
---|
| 1175 | |
---|
| 1176 | if (strncasecmp(buf, "CLASS", 5) != 0 || |
---|
| 1177 | !isdigit((unsigned char)buf[5])) |
---|
| 1178 | goto done; |
---|
| 1179 | errno = 0; |
---|
| 1180 | result = strtoul(buf + 5, &endptr, 10); |
---|
| 1181 | if (errno == 0 && *endptr == '\0' && result <= 0xffffU) |
---|
| 1182 | success = 1; |
---|
| 1183 | done: |
---|
| 1184 | if (successp) |
---|
| 1185 | *successp = success; |
---|
| 1186 | return (result); |
---|
| 1187 | } |
---|
| 1188 | |
---|
| 1189 | u_int16_t |
---|
| 1190 | res_nametotype(const char *buf, int *successp) { |
---|
| 1191 | unsigned long result; |
---|
| 1192 | char *endptr; |
---|
| 1193 | int success; |
---|
| 1194 | |
---|
| 1195 | result = sym_ston(__p_type_syms, buf, &success); |
---|
| 1196 | if (success) |
---|
| 1197 | goto done; |
---|
| 1198 | |
---|
| 1199 | if (strncasecmp(buf, "type", 4) != 0 || |
---|
| 1200 | !isdigit((unsigned char)buf[4])) |
---|
| 1201 | goto done; |
---|
| 1202 | errno = 0; |
---|
| 1203 | result = strtoul(buf + 4, &endptr, 10); |
---|
| 1204 | if (errno == 0 && *endptr == '\0' && result <= 0xffffU) |
---|
| 1205 | success = 1; |
---|
| 1206 | done: |
---|
| 1207 | if (successp) |
---|
| 1208 | *successp = success; |
---|
| 1209 | return (result); |
---|
| 1210 | } |
---|
| 1211 | |
---|
| 1212 | /* |
---|
| 1213 | * Weak aliases for applications that use certain private entry points, |
---|
| 1214 | * and fail to include <resolv.h>. |
---|
| 1215 | */ |
---|
| 1216 | #undef fp_resstat |
---|
| 1217 | __weak_reference(__fp_resstat, fp_resstat); |
---|
| 1218 | #undef p_fqnname |
---|
| 1219 | __weak_reference(__p_fqnname, p_fqnname); |
---|
| 1220 | #undef sym_ston |
---|
| 1221 | __weak_reference(__sym_ston, sym_ston); |
---|
| 1222 | #undef sym_ntos |
---|
| 1223 | __weak_reference(__sym_ntos, sym_ntos); |
---|
| 1224 | #undef sym_ntop |
---|
| 1225 | __weak_reference(__sym_ntop, sym_ntop); |
---|
| 1226 | #undef dn_count_labels |
---|
| 1227 | __weak_reference(__dn_count_labels, dn_count_labels); |
---|
| 1228 | #undef p_secstodate |
---|
| 1229 | __weak_reference(__p_secstodate, p_secstodate); |
---|
| 1230 | |
---|
| 1231 | /*! \file */ |
---|