Bernie Innocenti | 318ed2d | 2018-08-30 04:05:20 +0900 | [diff] [blame] | 1 | /* $NetBSD: res_debug.c,v 1.13 2012/06/25 22:32:45 abs Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * Portions Copyright (C) 2004, 2005, 2008, 2009 Internet Systems Consortium, Inc. ("ISC") |
| 5 | * Portions Copyright (C) 1996-2003 Internet Software Consortium. |
| 6 | * |
| 7 | * Permission to use, copy, modify, and/or distribute this software for any |
| 8 | * purpose with or without fee is hereby granted, provided that the above |
| 9 | * copyright notice and this permission notice appear in all copies. |
| 10 | * |
| 11 | * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH |
| 12 | * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY |
| 13 | * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT, |
| 14 | * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM |
| 15 | * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE |
| 16 | * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR |
| 17 | * PERFORMANCE OF THIS SOFTWARE. |
| 18 | */ |
| 19 | |
| 20 | /* |
| 21 | * Copyright (c) 1985 |
| 22 | * The Regents of the University of California. All rights reserved. |
| 23 | * |
| 24 | * Redistribution and use in source and binary forms, with or without |
| 25 | * modification, are permitted provided that the following conditions |
| 26 | * are met: |
| 27 | * 1. Redistributions of source code must retain the above copyright |
| 28 | * notice, this list of conditions and the following disclaimer. |
| 29 | * 2. Redistributions in binary form must reproduce the above copyright |
| 30 | * notice, this list of conditions and the following disclaimer in the |
| 31 | * documentation and/or other materials provided with the distribution. |
| 32 | * 3. All advertising materials mentioning features or use of this software |
| 33 | * must display the following acknowledgement: |
| 34 | * This product includes software developed by the University of |
| 35 | * California, Berkeley and its contributors. |
| 36 | * 4. Neither the name of the University nor the names of its contributors |
| 37 | * may be used to endorse or promote products derived from this software |
| 38 | * without specific prior written permission. |
| 39 | * |
| 40 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 41 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 42 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 43 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 44 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 45 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 46 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 47 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 48 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 49 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 50 | * SUCH DAMAGE. |
| 51 | */ |
| 52 | |
| 53 | /* |
| 54 | * Portions Copyright (c) 1993 by Digital Equipment Corporation. |
| 55 | * |
| 56 | * Permission to use, copy, modify, and distribute this software for any |
| 57 | * purpose with or without fee is hereby granted, provided that the above |
| 58 | * copyright notice and this permission notice appear in all copies, and that |
| 59 | * the name of Digital Equipment Corporation not be used in advertising or |
| 60 | * publicity pertaining to distribution of the document or software without |
| 61 | * specific, written prior permission. |
| 62 | * |
| 63 | * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL |
| 64 | * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES |
| 65 | * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT |
| 66 | * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL |
| 67 | * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR |
| 68 | * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS |
| 69 | * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS |
| 70 | * SOFTWARE. |
| 71 | */ |
| 72 | |
| 73 | /* |
| 74 | * Portions Copyright (c) 1995 by International Business Machines, Inc. |
| 75 | * |
| 76 | * International Business Machines, Inc. (hereinafter called IBM) grants |
| 77 | * permission under its copyrights to use, copy, modify, and distribute this |
| 78 | * Software with or without fee, provided that the above copyright notice and |
| 79 | * all paragraphs of this notice appear in all copies, and that the name of IBM |
| 80 | * not be used in connection with the marketing of any product incorporating |
| 81 | * the Software or modifications thereof, without specific, written prior |
| 82 | * permission. |
| 83 | * |
| 84 | * To the extent it has a right to do so, IBM grants an immunity from suit |
| 85 | * under its patents, if any, for the use, sale or manufacture of products to |
| 86 | * the extent that such products are used for performing Domain Name System |
| 87 | * dynamic updates in TCP/IP networks by means of the Software. No immunity is |
| 88 | * granted for any product per se or for any other function of any product. |
| 89 | * |
| 90 | * THE SOFTWARE IS PROVIDED "AS IS", AND IBM DISCLAIMS ALL WARRANTIES, |
| 91 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A |
| 92 | * PARTICULAR PURPOSE. IN NO EVENT SHALL IBM BE LIABLE FOR ANY SPECIAL, |
| 93 | * DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER ARISING |
| 94 | * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE, EVEN |
| 95 | * IF IBM IS APPRISED OF THE POSSIBILITY OF SUCH DAMAGES. |
| 96 | */ |
| 97 | |
Bernie Innocenti | 318ed2d | 2018-08-30 04:05:20 +0900 | [diff] [blame] | 98 | #include <sys/param.h> |
| 99 | #include <sys/socket.h> |
Bernie Innocenti | 8ad893f | 2018-08-31 14:09:46 +0900 | [diff] [blame] | 100 | #include <sys/types.h> |
Bernie Innocenti | 318ed2d | 2018-08-30 04:05:20 +0900 | [diff] [blame] | 101 | |
Bernie Innocenti | 318ed2d | 2018-08-30 04:05:20 +0900 | [diff] [blame] | 102 | #include <arpa/inet.h> |
| 103 | #include <arpa/nameser.h> |
Bernie Innocenti | 8ad893f | 2018-08-31 14:09:46 +0900 | [diff] [blame] | 104 | #include <netinet/in.h> |
Bernie Innocenti | 318ed2d | 2018-08-30 04:05:20 +0900 | [diff] [blame] | 105 | |
chenbruce | acb832c | 2019-02-20 19:45:50 +0800 | [diff] [blame^] | 106 | #include <android-base/logging.h> |
Bernie Innocenti | 318ed2d | 2018-08-30 04:05:20 +0900 | [diff] [blame] | 107 | #include <ctype.h> |
| 108 | #include <errno.h> |
| 109 | #include <math.h> |
| 110 | #include <netdb.h> |
Bernie Innocenti | 318ed2d | 2018-08-30 04:05:20 +0900 | [diff] [blame] | 111 | #include <stdio.h> |
| 112 | #include <stdlib.h> |
| 113 | #include <string.h> |
| 114 | #include <strings.h> |
| 115 | #include <time.h> |
Bernie Innocenti | ac18b12 | 2018-10-01 23:10:18 +0900 | [diff] [blame] | 116 | |
Bernie Innocenti | 8ad893f | 2018-08-31 14:09:46 +0900 | [diff] [blame] | 117 | #include "resolv_private.h" |
Bernie Innocenti | 318ed2d | 2018-08-30 04:05:20 +0900 | [diff] [blame] | 118 | |
Bernie Innocenti | ac18b12 | 2018-10-01 23:10:18 +0900 | [diff] [blame] | 119 | struct res_sym { |
| 120 | int number; /* Identifying number, like T_MX */ |
| 121 | const char* name; /* Its symbolic name, like "MX" */ |
| 122 | const char* humanname; /* Its fun name, like "mail exchanger" */ |
| 123 | }; |
Bernie Innocenti | afaacf7 | 2018-08-30 07:34:37 +0900 | [diff] [blame] | 124 | |
chenbruce | acb832c | 2019-02-20 19:45:50 +0800 | [diff] [blame^] | 125 | /* add a formatted string to a bounded buffer */ |
| 126 | static char* dbprint(char* p, char* end, const char* format, ...) { |
| 127 | int avail, n; |
| 128 | va_list args; |
| 129 | |
| 130 | avail = end - p; |
| 131 | |
| 132 | if (avail <= 0) return p; |
| 133 | |
| 134 | va_start(args, format); |
| 135 | n = vsnprintf(p, avail, format, args); |
| 136 | va_end(args); |
| 137 | |
| 138 | /* certain C libraries return -1 in case of truncation */ |
| 139 | if (n < 0 || n > avail) n = avail; |
| 140 | |
| 141 | p += n; |
| 142 | /* certain C libraries do not zero-terminate in case of truncation */ |
| 143 | if (p == end) p[-1] = 0; |
| 144 | |
| 145 | return p; |
| 146 | } |
| 147 | static void do_section(const res_state statp, ns_msg* handle, ns_sect section, int pflag) { |
Bernie Innocenti | 8ad893f | 2018-08-31 14:09:46 +0900 | [diff] [blame] | 148 | int n, sflag, rrnum; |
| 149 | int buflen = 2048; |
Bernie Innocenti | 8ad893f | 2018-08-31 14:09:46 +0900 | [diff] [blame] | 150 | ns_opcode opcode; |
| 151 | ns_rr rr; |
chenbruce | acb832c | 2019-02-20 19:45:50 +0800 | [diff] [blame^] | 152 | char temp[2048], *p = temp, *end = p + sizeof(temp); |
Bernie Innocenti | 318ed2d | 2018-08-30 04:05:20 +0900 | [diff] [blame] | 153 | |
Bernie Innocenti | 8ad893f | 2018-08-31 14:09:46 +0900 | [diff] [blame] | 154 | /* |
| 155 | * Print answer records. |
| 156 | */ |
| 157 | sflag = (int) (statp->pfcode & pflag); |
| 158 | if (statp->pfcode && !sflag) return; |
Bernie Innocenti | 318ed2d | 2018-08-30 04:05:20 +0900 | [diff] [blame] | 159 | |
Bernie Innocenti | 9c57593 | 2018-09-07 21:10:25 +0900 | [diff] [blame] | 160 | char* buf = (char*) malloc((size_t) buflen); |
Bernie Innocenti | 8ad893f | 2018-08-31 14:09:46 +0900 | [diff] [blame] | 161 | if (buf == NULL) { |
chenbruce | acb832c | 2019-02-20 19:45:50 +0800 | [diff] [blame^] | 162 | dbprint(p, end, ";; memory allocation failure\n"); |
| 163 | LOG(VERBOSE) << temp; |
Bernie Innocenti | 8ad893f | 2018-08-31 14:09:46 +0900 | [diff] [blame] | 164 | return; |
| 165 | } |
Bernie Innocenti | 318ed2d | 2018-08-30 04:05:20 +0900 | [diff] [blame] | 166 | |
Bernie Innocenti | 8ad893f | 2018-08-31 14:09:46 +0900 | [diff] [blame] | 167 | opcode = (ns_opcode) ns_msg_getflag(*handle, ns_f_opcode); |
| 168 | rrnum = 0; |
| 169 | for (;;) { |
| 170 | if (ns_parserr(handle, section, rrnum, &rr)) { |
| 171 | if (errno != ENODEV) |
chenbruce | acb832c | 2019-02-20 19:45:50 +0800 | [diff] [blame^] | 172 | dbprint(p, end, ";; ns_parserr: %s", strerror(errno)); |
Bernie Innocenti | 8ad893f | 2018-08-31 14:09:46 +0900 | [diff] [blame] | 173 | else if (rrnum > 0 && sflag != 0 && (statp->pfcode & RES_PRF_HEAD1)) |
chenbruce | acb832c | 2019-02-20 19:45:50 +0800 | [diff] [blame^] | 174 | dbprint(p, end, "\n"); |
Bernie Innocenti | 8ad893f | 2018-08-31 14:09:46 +0900 | [diff] [blame] | 175 | goto cleanup; |
| 176 | } |
| 177 | if (rrnum == 0 && sflag != 0 && (statp->pfcode & RES_PRF_HEAD1)) |
chenbruce | acb832c | 2019-02-20 19:45:50 +0800 | [diff] [blame^] | 178 | dbprint(p, end, ";; %s SECTION:\n", p_section(section, opcode)); |
Bernie Innocenti | 8ad893f | 2018-08-31 14:09:46 +0900 | [diff] [blame] | 179 | if (section == ns_s_qd) |
chenbruce | acb832c | 2019-02-20 19:45:50 +0800 | [diff] [blame^] | 180 | dbprint(p, end, ";;\t%s, type = %s, class = %s\n", ns_rr_name(rr), |
| 181 | p_type(ns_rr_type(rr)), p_class(ns_rr_class(rr))); |
Bernie Innocenti | 8ad893f | 2018-08-31 14:09:46 +0900 | [diff] [blame] | 182 | else if (section == ns_s_ar && ns_rr_type(rr) == ns_t_opt) { |
| 183 | size_t rdatalen, ttl; |
| 184 | uint16_t optcode, optlen; |
Bernie Innocenti | 318ed2d | 2018-08-30 04:05:20 +0900 | [diff] [blame] | 185 | |
Bernie Innocenti | 8ad893f | 2018-08-31 14:09:46 +0900 | [diff] [blame] | 186 | rdatalen = ns_rr_rdlen(rr); |
| 187 | ttl = ns_rr_ttl(rr); |
chenbruce | acb832c | 2019-02-20 19:45:50 +0800 | [diff] [blame^] | 188 | dbprint(p, end, "; EDNS: version: %zu, udp=%u, flags=%04zx\n", (ttl >> 16) & 0xff, |
Bernie Innocenti | 8ad893f | 2018-08-31 14:09:46 +0900 | [diff] [blame] | 189 | ns_rr_class(rr), ttl & 0xffff); |
| 190 | while (rdatalen >= 4) { |
| 191 | const u_char* cp = ns_rr_rdata(rr); |
| 192 | int i; |
Bernie Innocenti | 318ed2d | 2018-08-30 04:05:20 +0900 | [diff] [blame] | 193 | |
Bernie Innocenti | 8ad893f | 2018-08-31 14:09:46 +0900 | [diff] [blame] | 194 | GETSHORT(optcode, cp); |
| 195 | GETSHORT(optlen, cp); |
Bernie Innocenti | 318ed2d | 2018-08-30 04:05:20 +0900 | [diff] [blame] | 196 | |
Bernie Innocenti | 8ad893f | 2018-08-31 14:09:46 +0900 | [diff] [blame] | 197 | if (optcode == NS_OPT_NSID) { |
chenbruce | acb832c | 2019-02-20 19:45:50 +0800 | [diff] [blame^] | 198 | p = dbprint(p, end, "; NSID: "); |
Bernie Innocenti | 8ad893f | 2018-08-31 14:09:46 +0900 | [diff] [blame] | 199 | if (optlen == 0) { |
chenbruce | acb832c | 2019-02-20 19:45:50 +0800 | [diff] [blame^] | 200 | p = dbprint(p, end, "; NSID\n"); |
Bernie Innocenti | 8ad893f | 2018-08-31 14:09:46 +0900 | [diff] [blame] | 201 | } else { |
chenbruce | acb832c | 2019-02-20 19:45:50 +0800 | [diff] [blame^] | 202 | p = dbprint(p, end, "; NSID: "); |
| 203 | for (i = 0; i < optlen; i++) { |
| 204 | p = dbprint(p, end, "%02x ", cp[i]); |
| 205 | } |
| 206 | p = dbprint(p, end, " ("); |
| 207 | for (i = 0; i < optlen; i++) { |
| 208 | p = dbprint(p, end, "%c", isprint(cp[i]) ? cp[i] : '.'); |
| 209 | } |
| 210 | p = dbprint(p, end, ")\n"); |
Bernie Innocenti | 8ad893f | 2018-08-31 14:09:46 +0900 | [diff] [blame] | 211 | } |
| 212 | } else { |
| 213 | if (optlen == 0) { |
chenbruce | acb832c | 2019-02-20 19:45:50 +0800 | [diff] [blame^] | 214 | p = dbprint(p, end, "; OPT=%u\n", optcode); |
Bernie Innocenti | 8ad893f | 2018-08-31 14:09:46 +0900 | [diff] [blame] | 215 | } else { |
chenbruce | acb832c | 2019-02-20 19:45:50 +0800 | [diff] [blame^] | 216 | p = dbprint(p, end, "; OPT=%u: ", optcode); |
| 217 | for (i = 0; i < optlen; i++) { |
| 218 | p = dbprint(p, end, "%02x ", cp[i]); |
| 219 | } |
| 220 | p = dbprint(p, end, " ("); |
| 221 | for (i = 0; i < optlen; i++) { |
| 222 | p = dbprint(p, end, "%c", isprint(cp[i]) ? cp[i] : '.'); |
| 223 | } |
| 224 | p = dbprint(p, end, ")\n"); |
Bernie Innocenti | 8ad893f | 2018-08-31 14:09:46 +0900 | [diff] [blame] | 225 | } |
| 226 | } |
| 227 | rdatalen -= 4 + optlen; |
| 228 | } |
| 229 | } else { |
| 230 | n = ns_sprintrr(handle, &rr, NULL, NULL, buf, (u_int) buflen); |
| 231 | if (n < 0) { |
| 232 | if (errno == ENOSPC) { |
| 233 | free(buf); |
| 234 | buf = NULL; |
Bernie Innocenti | 9c57593 | 2018-09-07 21:10:25 +0900 | [diff] [blame] | 235 | if (buflen < 131072) { |
| 236 | buf = (char*) malloc((size_t)(buflen += 1024)); |
| 237 | } |
Bernie Innocenti | 8ad893f | 2018-08-31 14:09:46 +0900 | [diff] [blame] | 238 | if (buf == NULL) { |
chenbruce | acb832c | 2019-02-20 19:45:50 +0800 | [diff] [blame^] | 239 | p = dbprint(p, end, ";; memory allocation failure\n"); |
| 240 | LOG(VERBOSE) << temp; |
Bernie Innocenti | 8ad893f | 2018-08-31 14:09:46 +0900 | [diff] [blame] | 241 | return; |
| 242 | } |
| 243 | continue; |
| 244 | } |
chenbruce | acb832c | 2019-02-20 19:45:50 +0800 | [diff] [blame^] | 245 | p = dbprint(p, end, ";; ns_sprintrr: %s\n", strerror(errno)); |
Bernie Innocenti | 8ad893f | 2018-08-31 14:09:46 +0900 | [diff] [blame] | 246 | goto cleanup; |
| 247 | } |
chenbruce | acb832c | 2019-02-20 19:45:50 +0800 | [diff] [blame^] | 248 | p = dbprint(p, end, ";; %s\n", buf); |
Bernie Innocenti | 8ad893f | 2018-08-31 14:09:46 +0900 | [diff] [blame] | 249 | } |
| 250 | rrnum++; |
| 251 | } |
| 252 | cleanup: |
Bernie Innocenti | 9c57593 | 2018-09-07 21:10:25 +0900 | [diff] [blame] | 253 | free(buf); |
chenbruce | acb832c | 2019-02-20 19:45:50 +0800 | [diff] [blame^] | 254 | LOG(VERBOSE) << temp; |
Bernie Innocenti | 318ed2d | 2018-08-30 04:05:20 +0900 | [diff] [blame] | 255 | } |
| 256 | |
| 257 | /* |
| 258 | * Print the contents of a query. |
| 259 | * This is intended to be primarily a debugging routine. |
| 260 | */ |
chenbruce | acb832c | 2019-02-20 19:45:50 +0800 | [diff] [blame^] | 261 | |
| 262 | void res_pquery(const res_state statp, const u_char* msg, int len) { |
Bernie Innocenti | 8ad893f | 2018-08-31 14:09:46 +0900 | [diff] [blame] | 263 | ns_msg handle; |
| 264 | int qdcount, ancount, nscount, arcount; |
| 265 | u_int opcode, rcode, id; |
chenbruce | acb832c | 2019-02-20 19:45:50 +0800 | [diff] [blame^] | 266 | char temp[2048], *p = temp, *end = p + sizeof(temp); |
Bernie Innocenti | 318ed2d | 2018-08-30 04:05:20 +0900 | [diff] [blame] | 267 | |
Bernie Innocenti | 8ad893f | 2018-08-31 14:09:46 +0900 | [diff] [blame] | 268 | if (ns_initparse(msg, len, &handle) < 0) { |
chenbruce | acb832c | 2019-02-20 19:45:50 +0800 | [diff] [blame^] | 269 | dbprint(p, end, ";; ns_initparse: %s\n", strerror(errno)); |
Bernie Innocenti | 8ad893f | 2018-08-31 14:09:46 +0900 | [diff] [blame] | 270 | return; |
| 271 | } |
| 272 | opcode = ns_msg_getflag(handle, ns_f_opcode); |
| 273 | rcode = ns_msg_getflag(handle, ns_f_rcode); |
| 274 | id = ns_msg_id(handle); |
| 275 | qdcount = ns_msg_count(handle, ns_s_qd); |
| 276 | ancount = ns_msg_count(handle, ns_s_an); |
| 277 | nscount = ns_msg_count(handle, ns_s_ns); |
| 278 | arcount = ns_msg_count(handle, ns_s_ar); |
Bernie Innocenti | 318ed2d | 2018-08-30 04:05:20 +0900 | [diff] [blame] | 279 | |
Bernie Innocenti | 8ad893f | 2018-08-31 14:09:46 +0900 | [diff] [blame] | 280 | /* |
| 281 | * Print header fields. |
| 282 | */ |
| 283 | if ((!statp->pfcode) || (statp->pfcode & RES_PRF_HEADX) || rcode) |
chenbruce | acb832c | 2019-02-20 19:45:50 +0800 | [diff] [blame^] | 284 | dbprint(p, end, ";; ->>HEADER<<- opcode: %s, status: %s, id: %d\n", _res_opcodes[opcode], |
| 285 | p_rcode((int)rcode), id); |
| 286 | if ((!statp->pfcode) || (statp->pfcode & RES_PRF_HEADX)) p = dbprint(p, end, ";"); |
Bernie Innocenti | 8ad893f | 2018-08-31 14:09:46 +0900 | [diff] [blame] | 287 | if ((!statp->pfcode) || (statp->pfcode & RES_PRF_HEAD2)) { |
chenbruce | acb832c | 2019-02-20 19:45:50 +0800 | [diff] [blame^] | 288 | p = dbprint(p, end, "; flags:"); |
| 289 | if (ns_msg_getflag(handle, ns_f_qr)) p = dbprint(p, end, " qr"); |
| 290 | if (ns_msg_getflag(handle, ns_f_aa)) p = dbprint(p, end, " aa"); |
| 291 | if (ns_msg_getflag(handle, ns_f_tc)) p = dbprint(p, end, " tc"); |
| 292 | if (ns_msg_getflag(handle, ns_f_rd)) p = dbprint(p, end, " rd"); |
| 293 | if (ns_msg_getflag(handle, ns_f_ra)) p = dbprint(p, end, " ra"); |
| 294 | if (ns_msg_getflag(handle, ns_f_z)) p = dbprint(p, end, " ??"); |
| 295 | if (ns_msg_getflag(handle, ns_f_ad)) p = dbprint(p, end, " ad"); |
| 296 | if (ns_msg_getflag(handle, ns_f_cd)) p = dbprint(p, end, " cd"); |
Bernie Innocenti | 8ad893f | 2018-08-31 14:09:46 +0900 | [diff] [blame] | 297 | } |
| 298 | if ((!statp->pfcode) || (statp->pfcode & RES_PRF_HEAD1)) { |
chenbruce | acb832c | 2019-02-20 19:45:50 +0800 | [diff] [blame^] | 299 | p = dbprint(p, end, "; %s: %d", p_section(ns_s_qd, (int)opcode), qdcount); |
| 300 | p = dbprint(p, end, ", %s: %d", p_section(ns_s_an, (int)opcode), ancount); |
| 301 | p = dbprint(p, end, ", %s: %d", p_section(ns_s_ns, (int)opcode), nscount); |
| 302 | p = dbprint(p, end, ", %s: %d", p_section(ns_s_ar, (int)opcode), arcount); |
Bernie Innocenti | 8ad893f | 2018-08-31 14:09:46 +0900 | [diff] [blame] | 303 | } |
| 304 | if ((!statp->pfcode) || (statp->pfcode & (RES_PRF_HEADX | RES_PRF_HEAD2 | RES_PRF_HEAD1))) { |
chenbruce | acb832c | 2019-02-20 19:45:50 +0800 | [diff] [blame^] | 305 | p = dbprint(p, end, " \n"); |
Bernie Innocenti | 8ad893f | 2018-08-31 14:09:46 +0900 | [diff] [blame] | 306 | } |
chenbruce | acb832c | 2019-02-20 19:45:50 +0800 | [diff] [blame^] | 307 | LOG(VERBOSE) << temp; |
| 308 | |
Bernie Innocenti | 8ad893f | 2018-08-31 14:09:46 +0900 | [diff] [blame] | 309 | /* |
| 310 | * Print the various sections. |
| 311 | */ |
chenbruce | acb832c | 2019-02-20 19:45:50 +0800 | [diff] [blame^] | 312 | do_section(statp, &handle, ns_s_qd, RES_PRF_QUES); |
| 313 | do_section(statp, &handle, ns_s_an, RES_PRF_ANS); |
| 314 | do_section(statp, &handle, ns_s_ns, RES_PRF_AUTH); |
| 315 | do_section(statp, &handle, ns_s_ar, RES_PRF_ADD); |
| 316 | if (qdcount == 0 && ancount == 0 && nscount == 0 && arcount == 0) LOG(VERBOSE) << ";;"; |
Bernie Innocenti | 318ed2d | 2018-08-30 04:05:20 +0900 | [diff] [blame] | 317 | } |
| 318 | |
Bernie Innocenti | 8ad893f | 2018-08-31 14:09:46 +0900 | [diff] [blame] | 319 | const u_char* p_cdnname(const u_char* cp, const u_char* msg, int len, FILE* file) { |
| 320 | char name[MAXDNAME]; |
| 321 | int n; |
Bernie Innocenti | 318ed2d | 2018-08-30 04:05:20 +0900 | [diff] [blame] | 322 | |
Bernie Innocenti | 8ad893f | 2018-08-31 14:09:46 +0900 | [diff] [blame] | 323 | if ((n = dn_expand(msg, msg + len, cp, name, (int) sizeof name)) < 0) return (NULL); |
| 324 | if (name[0] == '\0') |
| 325 | putc('.', file); |
| 326 | else |
| 327 | fputs(name, file); |
| 328 | return (cp + n); |
Bernie Innocenti | 318ed2d | 2018-08-30 04:05:20 +0900 | [diff] [blame] | 329 | } |
| 330 | |
Bernie Innocenti | 8ad893f | 2018-08-31 14:09:46 +0900 | [diff] [blame] | 331 | const u_char* p_cdname(const u_char* cp, const u_char* msg, FILE* file) { |
| 332 | return (p_cdnname(cp, msg, PACKETSZ, file)); |
Bernie Innocenti | 318ed2d | 2018-08-30 04:05:20 +0900 | [diff] [blame] | 333 | } |
| 334 | |
| 335 | /* Return a fully-qualified domain name from a compressed name (with |
| 336 | length supplied). */ |
| 337 | |
Bernie Innocenti | 8ad893f | 2018-08-31 14:09:46 +0900 | [diff] [blame] | 338 | const u_char* p_fqnname(const u_char* cp, const u_char* msg, int msglen, char* name, int namelen) { |
| 339 | int n; |
| 340 | size_t newlen; |
Bernie Innocenti | 318ed2d | 2018-08-30 04:05:20 +0900 | [diff] [blame] | 341 | |
Bernie Innocenti | 8ad893f | 2018-08-31 14:09:46 +0900 | [diff] [blame] | 342 | if ((n = dn_expand(msg, cp + msglen, cp, name, namelen)) < 0) return (NULL); |
| 343 | newlen = strlen(name); |
| 344 | if (newlen == 0 || name[newlen - 1] != '.') { |
| 345 | if ((int) newlen + 1 >= namelen) /* Lack space for final dot */ |
| 346 | return (NULL); |
| 347 | else |
| 348 | strcpy(name + newlen, "."); |
| 349 | } |
| 350 | return (cp + n); |
Bernie Innocenti | 318ed2d | 2018-08-30 04:05:20 +0900 | [diff] [blame] | 351 | } |
| 352 | |
| 353 | /* XXX: the rest of these functions need to become length-limited, too. */ |
| 354 | |
Bernie Innocenti | 8ad893f | 2018-08-31 14:09:46 +0900 | [diff] [blame] | 355 | const u_char* p_fqname(const u_char* cp, const u_char* msg, FILE* file) { |
| 356 | char name[MAXDNAME]; |
| 357 | const u_char* n; |
Bernie Innocenti | 318ed2d | 2018-08-30 04:05:20 +0900 | [diff] [blame] | 358 | |
Bernie Innocenti | 8ad893f | 2018-08-31 14:09:46 +0900 | [diff] [blame] | 359 | n = p_fqnname(cp, msg, MAXCDNAME, name, (int) sizeof name); |
| 360 | if (n == NULL) return (NULL); |
| 361 | fputs(name, file); |
| 362 | return (n); |
Bernie Innocenti | 318ed2d | 2018-08-30 04:05:20 +0900 | [diff] [blame] | 363 | } |
| 364 | |
| 365 | /* |
| 366 | * Names of RR classes and qclasses. Classes and qclasses are the same, except |
| 367 | * that C_ANY is a qclass but not a class. (You can ask for records of class |
| 368 | * C_ANY, but you can't have any records of that class in the database.) |
| 369 | */ |
Bernie Innocenti | ac18b12 | 2018-10-01 23:10:18 +0900 | [diff] [blame] | 370 | static const struct res_sym p_class_syms[] = { |
Bernie Innocenti | 8ad893f | 2018-08-31 14:09:46 +0900 | [diff] [blame] | 371 | {C_IN, "IN", (char*) 0}, {C_CHAOS, "CH", (char*) 0}, {C_CHAOS, "CHAOS", (char*) 0}, |
| 372 | {C_HS, "HS", (char*) 0}, {C_HS, "HESIOD", (char*) 0}, {C_ANY, "ANY", (char*) 0}, |
| 373 | {C_NONE, "NONE", (char*) 0}, {C_IN, (char*) 0, (char*) 0}}; |
Bernie Innocenti | 318ed2d | 2018-08-30 04:05:20 +0900 | [diff] [blame] | 374 | |
| 375 | /* |
| 376 | * Names of message sections. |
| 377 | */ |
Bernie Innocenti | ac18b12 | 2018-10-01 23:10:18 +0900 | [diff] [blame] | 378 | static const struct res_sym p_default_section_syms[] = {{ns_s_qd, "QUERY", (char*) 0}, |
| 379 | {ns_s_an, "ANSWER", (char*) 0}, |
| 380 | {ns_s_ns, "AUTHORITY", (char*) 0}, |
| 381 | {ns_s_ar, "ADDITIONAL", (char*) 0}, |
| 382 | {0, (char*) 0, (char*) 0}}; |
Bernie Innocenti | 318ed2d | 2018-08-30 04:05:20 +0900 | [diff] [blame] | 383 | |
Bernie Innocenti | ac18b12 | 2018-10-01 23:10:18 +0900 | [diff] [blame] | 384 | static const struct res_sym p_update_section_syms[] = {{S_ZONE, "ZONE", (char*) 0}, |
| 385 | {S_PREREQ, "PREREQUISITE", (char*) 0}, |
| 386 | {S_UPDATE, "UPDATE", (char*) 0}, |
| 387 | {S_ADDT, "ADDITIONAL", (char*) 0}, |
| 388 | {0, (char*) 0, (char*) 0}}; |
Bernie Innocenti | 318ed2d | 2018-08-30 04:05:20 +0900 | [diff] [blame] | 389 | |
Bernie Innocenti | 318ed2d | 2018-08-30 04:05:20 +0900 | [diff] [blame] | 390 | /* |
| 391 | * Names of RR types and qtypes. Types and qtypes are the same, except |
| 392 | * that T_ANY is a qtype but not a type. (You can ask for records of type |
| 393 | * T_ANY, but you can't have any records of that type in the database.) |
| 394 | */ |
Bernie Innocenti | ac18b12 | 2018-10-01 23:10:18 +0900 | [diff] [blame] | 395 | const struct res_sym p_type_syms[] = { |
Bernie Innocenti | 8ad893f | 2018-08-31 14:09:46 +0900 | [diff] [blame] | 396 | {ns_t_a, "A", "address"}, |
| 397 | {ns_t_ns, "NS", "name server"}, |
| 398 | {ns_t_md, "MD", "mail destination (deprecated)"}, |
| 399 | {ns_t_mf, "MF", "mail forwarder (deprecated)"}, |
| 400 | {ns_t_cname, "CNAME", "canonical name"}, |
| 401 | {ns_t_soa, "SOA", "start of authority"}, |
| 402 | {ns_t_mb, "MB", "mailbox"}, |
| 403 | {ns_t_mg, "MG", "mail group member"}, |
| 404 | {ns_t_mr, "MR", "mail rename"}, |
| 405 | {ns_t_null, "NULL", "null"}, |
| 406 | {ns_t_wks, "WKS", "well-known service (deprecated)"}, |
| 407 | {ns_t_ptr, "PTR", "domain name pointer"}, |
| 408 | {ns_t_hinfo, "HINFO", "host information"}, |
| 409 | {ns_t_minfo, "MINFO", "mailbox information"}, |
| 410 | {ns_t_mx, "MX", "mail exchanger"}, |
| 411 | {ns_t_txt, "TXT", "text"}, |
| 412 | {ns_t_rp, "RP", "responsible person"}, |
| 413 | {ns_t_afsdb, "AFSDB", "DCE or AFS server"}, |
| 414 | {ns_t_x25, "X25", "X25 address"}, |
| 415 | {ns_t_isdn, "ISDN", "ISDN address"}, |
| 416 | {ns_t_rt, "RT", "router"}, |
| 417 | {ns_t_nsap, "NSAP", "nsap address"}, |
| 418 | {ns_t_nsap_ptr, "NSAP_PTR", "domain name pointer"}, |
| 419 | {ns_t_sig, "SIG", "signature"}, |
| 420 | {ns_t_key, "KEY", "key"}, |
| 421 | {ns_t_px, "PX", "mapping information"}, |
| 422 | {ns_t_gpos, "GPOS", "geographical position (withdrawn)"}, |
| 423 | {ns_t_aaaa, "AAAA", "IPv6 address"}, |
| 424 | {ns_t_loc, "LOC", "location"}, |
| 425 | {ns_t_nxt, "NXT", "next valid name (unimplemented)"}, |
| 426 | {ns_t_eid, "EID", "endpoint identifier (unimplemented)"}, |
| 427 | {ns_t_nimloc, "NIMLOC", "NIMROD locator (unimplemented)"}, |
| 428 | {ns_t_srv, "SRV", "server selection"}, |
| 429 | {ns_t_atma, "ATMA", "ATM address (unimplemented)"}, |
| 430 | {ns_t_naptr, "NAPTR", "naptr"}, |
| 431 | {ns_t_kx, "KX", "key exchange"}, |
| 432 | {ns_t_cert, "CERT", "certificate"}, |
| 433 | {ns_t_a6, "A", "IPv6 address (experminental)"}, |
| 434 | {ns_t_dname, "DNAME", "non-terminal redirection"}, |
| 435 | {ns_t_opt, "OPT", "opt"}, |
| 436 | {ns_t_apl, "apl", "apl"}, |
| 437 | {ns_t_ds, "DS", "delegation signer"}, |
| 438 | {ns_t_sshfp, "SSFP", "SSH fingerprint"}, |
| 439 | {ns_t_ipseckey, "IPSECKEY", "IPSEC key"}, |
| 440 | {ns_t_rrsig, "RRSIG", "rrsig"}, |
| 441 | {ns_t_nsec, "NSEC", "nsec"}, |
| 442 | {ns_t_dnskey, "DNSKEY", "DNS key"}, |
| 443 | {ns_t_dhcid, "DHCID", "dynamic host configuration identifier"}, |
| 444 | {ns_t_nsec3, "NSEC3", "nsec3"}, |
| 445 | {ns_t_nsec3param, "NSEC3PARAM", "NSEC3 parameters"}, |
| 446 | {ns_t_hip, "HIP", "host identity protocol"}, |
| 447 | {ns_t_spf, "SPF", "sender policy framework"}, |
| 448 | {ns_t_tkey, "TKEY", "tkey"}, |
| 449 | {ns_t_tsig, "TSIG", "transaction signature"}, |
| 450 | {ns_t_ixfr, "IXFR", "incremental zone transfer"}, |
| 451 | {ns_t_axfr, "AXFR", "zone transfer"}, |
| 452 | {ns_t_zxfr, "ZXFR", "compressed zone transfer"}, |
| 453 | {ns_t_mailb, "MAILB", "mailbox-related data (deprecated)"}, |
| 454 | {ns_t_maila, "MAILA", "mail agent (deprecated)"}, |
| 455 | {ns_t_naptr, "NAPTR", "URN Naming Authority"}, |
| 456 | {ns_t_kx, "KX", "Key Exchange"}, |
| 457 | {ns_t_cert, "CERT", "Certificate"}, |
| 458 | {ns_t_a6, "A6", "IPv6 Address"}, |
| 459 | {ns_t_dname, "DNAME", "dname"}, |
| 460 | {ns_t_sink, "SINK", "Kitchen Sink (experimental)"}, |
| 461 | {ns_t_opt, "OPT", "EDNS Options"}, |
| 462 | {ns_t_any, "ANY", "\"any\""}, |
| 463 | {ns_t_dlv, "DLV", "DNSSEC look-aside validation"}, |
| 464 | {0, NULL, NULL}}; |
Bernie Innocenti | 318ed2d | 2018-08-30 04:05:20 +0900 | [diff] [blame] | 465 | |
| 466 | /* |
| 467 | * Names of DNS rcodes. |
| 468 | */ |
Bernie Innocenti | ac18b12 | 2018-10-01 23:10:18 +0900 | [diff] [blame] | 469 | static const struct res_sym p_rcode_syms[] = {{ns_r_noerror, "NOERROR", "no error"}, |
| 470 | {ns_r_formerr, "FORMERR", "format error"}, |
| 471 | {ns_r_servfail, "SERVFAIL", "server failed"}, |
| 472 | {ns_r_nxdomain, "NXDOMAIN", "no such domain name"}, |
| 473 | {ns_r_notimpl, "NOTIMP", "not implemented"}, |
| 474 | {ns_r_refused, "REFUSED", "refused"}, |
| 475 | {ns_r_yxdomain, "YXDOMAIN", "domain name exists"}, |
| 476 | {ns_r_yxrrset, "YXRRSET", "rrset exists"}, |
| 477 | {ns_r_nxrrset, "NXRRSET", "rrset doesn't exist"}, |
| 478 | {ns_r_notauth, "NOTAUTH", "not authoritative"}, |
| 479 | {ns_r_notzone, "NOTZONE", "Not in zone"}, |
| 480 | {ns_r_max, "", ""}, |
| 481 | {ns_r_badsig, "BADSIG", "bad signature"}, |
| 482 | {ns_r_badkey, "BADKEY", "bad key"}, |
| 483 | {ns_r_badtime, "BADTIME", "bad time"}, |
| 484 | {0, NULL, NULL}}; |
Bernie Innocenti | 318ed2d | 2018-08-30 04:05:20 +0900 | [diff] [blame] | 485 | |
Bernie Innocenti | 5c6e0b0 | 2018-09-11 18:18:22 +0900 | [diff] [blame] | 486 | static const char* sym_ntos(const struct res_sym* syms, int number, int* success) { |
Bernie Innocenti | 8ad893f | 2018-08-31 14:09:46 +0900 | [diff] [blame] | 487 | static char unname[20]; |
Bernie Innocenti | 318ed2d | 2018-08-30 04:05:20 +0900 | [diff] [blame] | 488 | |
Bernie Innocenti | 8ad893f | 2018-08-31 14:09:46 +0900 | [diff] [blame] | 489 | for (; syms->name != 0; syms++) { |
| 490 | if (number == syms->number) { |
| 491 | if (success) *success = 1; |
| 492 | return (syms->name); |
| 493 | } |
| 494 | } |
Bernie Innocenti | 318ed2d | 2018-08-30 04:05:20 +0900 | [diff] [blame] | 495 | |
Bernie Innocenti | 8ad893f | 2018-08-31 14:09:46 +0900 | [diff] [blame] | 496 | snprintf(unname, sizeof(unname), "%d", number); /* XXX nonreentrant */ |
| 497 | if (success) *success = 0; |
| 498 | return (unname); |
Bernie Innocenti | 318ed2d | 2018-08-30 04:05:20 +0900 | [diff] [blame] | 499 | } |
| 500 | |
Bernie Innocenti | 318ed2d | 2018-08-30 04:05:20 +0900 | [diff] [blame] | 501 | /* |
| 502 | * Return a string for the type. |
| 503 | */ |
Bernie Innocenti | 8ad893f | 2018-08-31 14:09:46 +0900 | [diff] [blame] | 504 | const char* p_type(int type) { |
| 505 | int success; |
| 506 | const char* result; |
| 507 | static char typebuf[20]; |
Bernie Innocenti | 318ed2d | 2018-08-30 04:05:20 +0900 | [diff] [blame] | 508 | |
Bernie Innocenti | ac18b12 | 2018-10-01 23:10:18 +0900 | [diff] [blame] | 509 | result = sym_ntos(p_type_syms, type, &success); |
Bernie Innocenti | 8ad893f | 2018-08-31 14:09:46 +0900 | [diff] [blame] | 510 | if (success) return (result); |
| 511 | if (type < 0 || type > 0xffff) return ("BADTYPE"); |
| 512 | snprintf(typebuf, sizeof(typebuf), "TYPE%d", type); |
| 513 | return (typebuf); |
Bernie Innocenti | 318ed2d | 2018-08-30 04:05:20 +0900 | [diff] [blame] | 514 | } |
| 515 | |
| 516 | /* |
| 517 | * Return a string for the type. |
| 518 | */ |
Bernie Innocenti | 8ad893f | 2018-08-31 14:09:46 +0900 | [diff] [blame] | 519 | const char* p_section(int section, int opcode) { |
| 520 | const struct res_sym* symbols; |
Bernie Innocenti | 318ed2d | 2018-08-30 04:05:20 +0900 | [diff] [blame] | 521 | |
Bernie Innocenti | 8ad893f | 2018-08-31 14:09:46 +0900 | [diff] [blame] | 522 | switch (opcode) { |
| 523 | case ns_o_update: |
Bernie Innocenti | ac18b12 | 2018-10-01 23:10:18 +0900 | [diff] [blame] | 524 | symbols = p_update_section_syms; |
Bernie Innocenti | 8ad893f | 2018-08-31 14:09:46 +0900 | [diff] [blame] | 525 | break; |
| 526 | default: |
Bernie Innocenti | ac18b12 | 2018-10-01 23:10:18 +0900 | [diff] [blame] | 527 | symbols = p_default_section_syms; |
Bernie Innocenti | 8ad893f | 2018-08-31 14:09:46 +0900 | [diff] [blame] | 528 | break; |
| 529 | } |
| 530 | return (sym_ntos(symbols, section, (int*) 0)); |
Bernie Innocenti | 318ed2d | 2018-08-30 04:05:20 +0900 | [diff] [blame] | 531 | } |
| 532 | |
| 533 | /* |
| 534 | * Return a mnemonic for class. |
| 535 | */ |
Bernie Innocenti | 9c57593 | 2018-09-07 21:10:25 +0900 | [diff] [blame] | 536 | const char* p_class(int cl) { |
Bernie Innocenti | 8ad893f | 2018-08-31 14:09:46 +0900 | [diff] [blame] | 537 | int success; |
| 538 | const char* result; |
| 539 | static char classbuf[20]; |
Bernie Innocenti | 318ed2d | 2018-08-30 04:05:20 +0900 | [diff] [blame] | 540 | |
Bernie Innocenti | ac18b12 | 2018-10-01 23:10:18 +0900 | [diff] [blame] | 541 | result = sym_ntos(p_class_syms, cl, &success); |
Bernie Innocenti | 8ad893f | 2018-08-31 14:09:46 +0900 | [diff] [blame] | 542 | if (success) return (result); |
Bernie Innocenti | 9c57593 | 2018-09-07 21:10:25 +0900 | [diff] [blame] | 543 | if (cl < 0 || cl > 0xffff) return ("BADCLASS"); |
| 544 | snprintf(classbuf, sizeof(classbuf), "CLASS%d", cl); |
Bernie Innocenti | 8ad893f | 2018-08-31 14:09:46 +0900 | [diff] [blame] | 545 | return (classbuf); |
Bernie Innocenti | 318ed2d | 2018-08-30 04:05:20 +0900 | [diff] [blame] | 546 | } |
| 547 | |
| 548 | /* |
Bernie Innocenti | 318ed2d | 2018-08-30 04:05:20 +0900 | [diff] [blame] | 549 | * Return a string for the rcode. |
| 550 | */ |
Bernie Innocenti | 8ad893f | 2018-08-31 14:09:46 +0900 | [diff] [blame] | 551 | const char* p_rcode(int rcode) { |
Bernie Innocenti | ac18b12 | 2018-10-01 23:10:18 +0900 | [diff] [blame] | 552 | return (sym_ntos(p_rcode_syms, rcode, (int*) 0)); |
Bernie Innocenti | 318ed2d | 2018-08-30 04:05:20 +0900 | [diff] [blame] | 553 | } |
chenbruce | acb832c | 2019-02-20 19:45:50 +0800 | [diff] [blame^] | 554 | |
| 555 | android::base::LogSeverity logSeverityStrToEnum(const std::string& logSeverityStr) { |
| 556 | android::base::LogSeverity logSeverityEnum; |
| 557 | if (logSeverityStr == "VERBOSE") { |
| 558 | logSeverityEnum = android::base::VERBOSE; |
| 559 | } else if (logSeverityStr == "DEBUG") { |
| 560 | logSeverityEnum = android::base::DEBUG; |
| 561 | } else if (logSeverityStr == "INFO") { |
| 562 | logSeverityEnum = android::base::INFO; |
| 563 | } else if (logSeverityStr == "WARNING") { |
| 564 | logSeverityEnum = android::base::WARNING; |
| 565 | } else if (logSeverityStr == "ERROR") { |
| 566 | logSeverityEnum = android::base::ERROR; |
| 567 | } else if (logSeverityStr == "FATAL_WITHOUT_ABORT") { |
| 568 | logSeverityEnum = android::base::FATAL_WITHOUT_ABORT; |
| 569 | } else if (logSeverityStr == "FATAL") { |
| 570 | logSeverityEnum = android::base::FATAL; |
| 571 | } else { |
| 572 | // Invalid parameter is treated as WARNING (default setting) |
| 573 | logSeverityEnum = android::base::WARNING; |
| 574 | } |
| 575 | LOG(INFO) << "logSeverityEnum " << logSeverityEnum; |
| 576 | return logSeverityEnum; |
| 577 | } |