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 98 #define LOG_TAG "resolv" 99 100 #include "res_debug.h" 101 102 #include <sys/param.h> 103 #include <sys/socket.h> 104 105 #include <arpa/inet.h> 106 #include <arpa/nameser.h> 107 #include <netinet/in.h> 108 109 #include <aidl/android/net/IDnsResolver.h> 110 #include <android-base/logging.h> 111 #include <android-base/stringprintf.h> 112 #include <ctype.h> 113 #include <errno.h> 114 #include <inttypes.h> 115 #include <math.h> 116 #include <netdb.h> 117 #include <netdutils/Slice.h> 118 #include <stdlib.h> 119 #include <string.h> 120 #include <strings.h> 121 #include <time.h> 122 123 #include "resolv_private.h" 124 125 // Default to disabling verbose logging unless overridden by Android.bp 126 // for debuggable builds. 127 // 128 // NOTE: Verbose resolver logs could contain PII -- do NOT enable in production builds 129 #ifndef RESOLV_ALLOW_VERBOSE_LOGGING 130 #define RESOLV_ALLOW_VERBOSE_LOGGING 0 131 #endif 132 133 using android::base::StringAppendF; 134 using android::netdutils::Slice; 135 136 struct res_sym { 137 int number; /* Identifying number, like T_MX */ 138 const char* name; /* Its symbolic name, like "MX" */ 139 const char* humanname; /* Its fun name, like "mail exchanger" */ 140 }; 141 142 static void do_section(ns_msg* handle, ns_sect section) { 143 int n, rrnum = 0; 144 int buflen = 2048; 145 ns_rr rr; 146 std::string s; 147 148 /* 149 * Print answer records. 150 */ 151 for (;;) { 152 if (ns_parserr(handle, section, rrnum, &rr)) { 153 if (errno != ENODEV) StringAppendF(&s, "ns_parserr: %s", strerror(errno)); 154 LOG(VERBOSE) << s; 155 return; 156 } 157 if (rrnum == 0) { 158 int opcode = ns_msg_getflag(*handle, ns_f_opcode); 159 StringAppendF(&s, ";; %s SECTION:\n", p_section(section, opcode)); 160 } 161 if (section == ns_s_qd) 162 StringAppendF(&s, ";;\t%s, type = %s, class = %s\n", ns_rr_name(rr), 163 p_type(ns_rr_type(rr)), p_class(ns_rr_class(rr))); 164 else if (section == ns_s_ar && ns_rr_type(rr) == ns_t_opt) { 165 size_t rdatalen; 166 uint16_t optcode, optlen; 167 168 rdatalen = ns_rr_rdlen(rr); 169 StringAppendF(&s, "; EDNS: version: %" PRIu32 ", udp=%u, flags=%" PRIu32 "\n", 170 (rr.ttl >> 16) & 0xff, ns_rr_class(rr), rr.ttl & 0xffff); 171 const uint8_t* cp = ns_rr_rdata(rr); 172 while (rdatalen <= ns_rr_rdlen(rr) && rdatalen >= 4) { 173 int i; 174 175 GETSHORT(optcode, cp); 176 GETSHORT(optlen, cp); 177 178 if (optcode == NS_OPT_NSID) { 179 StringAppendF(&s, "; NSID: "); 180 if (optlen == 0) { 181 StringAppendF(&s, "; NSID\n"); 182 } else { 183 StringAppendF(&s, "; NSID: "); 184 for (i = 0; i < optlen; i++) { 185 StringAppendF(&s, "%02x ", cp[i]); 186 } 187 StringAppendF(&s, " ("); 188 for (i = 0; i < optlen; i++) { 189 StringAppendF(&s, "%c", isprint(cp[i]) ? cp[i] : '.'); 190 } 191 StringAppendF(&s, ")\n"); 192 } 193 } else { 194 if (optlen == 0) { 195 StringAppendF(&s, "; OPT=%u\n", optcode); 196 } else { 197 StringAppendF(&s, "; OPT=%u: ", optcode); 198 for (i = 0; i < optlen; i++) { 199 StringAppendF(&s, "%02x ", cp[i]); 200 } 201 StringAppendF(&s, " ("); 202 for (i = 0; i < optlen; i++) { 203 StringAppendF(&s, "%c", isprint(cp[i]) ? cp[i] : '.'); 204 } 205 StringAppendF(&s, ")\n"); 206 } 207 } 208 rdatalen -= 4 + optlen; 209 cp += optlen; 210 } 211 } else { 212 auto buf = std::make_unique<char[]>(buflen); 213 n = ns_sprintrr(handle, &rr, NULL, NULL, buf.get(), (uint32_t)buflen); 214 if (n < 0) { 215 if (errno == ENOSPC) { 216 if (buflen < 131072) { 217 buflen += 1024; 218 continue; 219 } else { 220 StringAppendF(&s, "buflen over 131072"); 221 PLOG(VERBOSE) << s; 222 return; 223 } 224 } 225 StringAppendF(&s, "ns_sprintrr failed"); 226 PLOG(VERBOSE) << s; 227 return; 228 } 229 StringAppendF(&s, ";; %s\n", buf.get()); 230 } 231 rrnum++; 232 } 233 } 234 235 /* 236 * Print the contents of a query. 237 * This is intended to be primarily a debugging routine. 238 */ 239 void res_pquery(const uint8_t* msg, int len) { 240 if (!WOULD_LOG(VERBOSE)) return; 241 242 ns_msg handle; 243 int qdcount, ancount, nscount, arcount; 244 uint32_t opcode, rcode, id; 245 246 if (ns_initparse(msg, len, &handle) < 0) { 247 PLOG(VERBOSE) << "ns_initparse failed"; 248 return; 249 } 250 opcode = ns_msg_getflag(handle, ns_f_opcode); 251 rcode = ns_msg_getflag(handle, ns_f_rcode); 252 id = ns_msg_id(handle); 253 qdcount = ns_msg_count(handle, ns_s_qd); 254 ancount = ns_msg_count(handle, ns_s_an); 255 nscount = ns_msg_count(handle, ns_s_ns); 256 arcount = ns_msg_count(handle, ns_s_ar); 257 258 /* 259 * Print header fields. 260 */ 261 std::string s; 262 StringAppendF(&s, ";; ->>HEADER<<- opcode: %s, status: %s, id: %d\n", _res_opcodes[opcode], 263 p_rcode((int)rcode), id); 264 StringAppendF(&s, ";; flags:"); 265 if (ns_msg_getflag(handle, ns_f_qr)) StringAppendF(&s, " qr"); 266 if (ns_msg_getflag(handle, ns_f_aa)) StringAppendF(&s, " aa"); 267 if (ns_msg_getflag(handle, ns_f_tc)) StringAppendF(&s, " tc"); 268 if (ns_msg_getflag(handle, ns_f_rd)) StringAppendF(&s, " rd"); 269 if (ns_msg_getflag(handle, ns_f_ra)) StringAppendF(&s, " ra"); 270 if (ns_msg_getflag(handle, ns_f_z)) StringAppendF(&s, " ??"); 271 if (ns_msg_getflag(handle, ns_f_ad)) StringAppendF(&s, " ad"); 272 if (ns_msg_getflag(handle, ns_f_cd)) StringAppendF(&s, " cd"); 273 StringAppendF(&s, "; %s: %d", p_section(ns_s_qd, (int)opcode), qdcount); 274 StringAppendF(&s, ", %s: %d", p_section(ns_s_an, (int)opcode), ancount); 275 StringAppendF(&s, ", %s: %d", p_section(ns_s_ns, (int)opcode), nscount); 276 StringAppendF(&s, ", %s: %d", p_section(ns_s_ar, (int)opcode), arcount); 277 278 LOG(VERBOSE) << s; 279 280 /* 281 * Print the various sections. 282 */ 283 do_section(&handle, ns_s_qd); 284 do_section(&handle, ns_s_an); 285 do_section(&handle, ns_s_ns); 286 do_section(&handle, ns_s_ar); 287 288 LOG(VERBOSE) << "Hex dump:"; 289 LOG(VERBOSE) << android::netdutils::toHex(Slice(const_cast<uint8_t*>(msg), len), 32); 290 } 291 292 /* 293 * Names of RR classes and qclasses. Classes and qclasses are the same, except 294 * that C_ANY is a qclass but not a class. (You can ask for records of class 295 * C_ANY, but you can't have any records of that class in the database.) 296 */ 297 static const struct res_sym p_class_syms[] = { 298 {C_IN, "IN", (char*) 0}, {C_CHAOS, "CH", (char*) 0}, {C_CHAOS, "CHAOS", (char*) 0}, 299 {C_HS, "HS", (char*) 0}, {C_HS, "HESIOD", (char*) 0}, {C_ANY, "ANY", (char*) 0}, 300 {C_NONE, "NONE", (char*) 0}, {C_IN, (char*) 0, (char*) 0}}; 301 302 /* 303 * Names of message sections. 304 */ 305 static const struct res_sym p_default_section_syms[] = {{ns_s_qd, "QUERY", (char*) 0}, 306 {ns_s_an, "ANSWER", (char*) 0}, 307 {ns_s_ns, "AUTHORITY", (char*) 0}, 308 {ns_s_ar, "ADDITIONAL", (char*) 0}, 309 {0, (char*) 0, (char*) 0}}; 310 311 static const struct res_sym p_update_section_syms[] = {{S_ZONE, "ZONE", (char*) 0}, 312 {S_PREREQ, "PREREQUISITE", (char*) 0}, 313 {S_UPDATE, "UPDATE", (char*) 0}, 314 {S_ADDT, "ADDITIONAL", (char*) 0}, 315 {0, (char*) 0, (char*) 0}}; 316 317 /* 318 * Names of RR types and qtypes. Types and qtypes are the same, except 319 * that T_ANY is a qtype but not a type. (You can ask for records of type 320 * T_ANY, but you can't have any records of that type in the database.) 321 */ 322 const struct res_sym p_type_syms[] = { 323 {ns_t_a, "A", "address"}, 324 {ns_t_ns, "NS", "name server"}, 325 {ns_t_md, "MD", "mail destination (deprecated)"}, 326 {ns_t_mf, "MF", "mail forwarder (deprecated)"}, 327 {ns_t_cname, "CNAME", "canonical name"}, 328 {ns_t_soa, "SOA", "start of authority"}, 329 {ns_t_mb, "MB", "mailbox"}, 330 {ns_t_mg, "MG", "mail group member"}, 331 {ns_t_mr, "MR", "mail rename"}, 332 {ns_t_null, "NULL", "null"}, 333 {ns_t_wks, "WKS", "well-known service (deprecated)"}, 334 {ns_t_ptr, "PTR", "domain name pointer"}, 335 {ns_t_hinfo, "HINFO", "host information"}, 336 {ns_t_minfo, "MINFO", "mailbox information"}, 337 {ns_t_mx, "MX", "mail exchanger"}, 338 {ns_t_txt, "TXT", "text"}, 339 {ns_t_rp, "RP", "responsible person"}, 340 {ns_t_afsdb, "AFSDB", "DCE or AFS server"}, 341 {ns_t_x25, "X25", "X25 address"}, 342 {ns_t_isdn, "ISDN", "ISDN address"}, 343 {ns_t_rt, "RT", "router"}, 344 {ns_t_nsap, "NSAP", "nsap address"}, 345 {ns_t_nsap_ptr, "NSAP_PTR", "domain name pointer"}, 346 {ns_t_sig, "SIG", "signature"}, 347 {ns_t_key, "KEY", "key"}, 348 {ns_t_px, "PX", "mapping information"}, 349 {ns_t_gpos, "GPOS", "geographical position (withdrawn)"}, 350 {ns_t_aaaa, "AAAA", "IPv6 address"}, 351 {ns_t_loc, "LOC", "location"}, 352 {ns_t_nxt, "NXT", "next valid name (unimplemented)"}, 353 {ns_t_eid, "EID", "endpoint identifier (unimplemented)"}, 354 {ns_t_nimloc, "NIMLOC", "NIMROD locator (unimplemented)"}, 355 {ns_t_srv, "SRV", "server selection"}, 356 {ns_t_atma, "ATMA", "ATM address (unimplemented)"}, 357 {ns_t_naptr, "NAPTR", "naptr"}, 358 {ns_t_kx, "KX", "key exchange"}, 359 {ns_t_cert, "CERT", "certificate"}, 360 {ns_t_a6, "A", "IPv6 address (experminental)"}, 361 {ns_t_dname, "DNAME", "non-terminal redirection"}, 362 {ns_t_opt, "OPT", "opt"}, 363 {ns_t_apl, "apl", "apl"}, 364 {ns_t_ds, "DS", "delegation signer"}, 365 {ns_t_sshfp, "SSFP", "SSH fingerprint"}, 366 {ns_t_ipseckey, "IPSECKEY", "IPSEC key"}, 367 {ns_t_rrsig, "RRSIG", "rrsig"}, 368 {ns_t_nsec, "NSEC", "nsec"}, 369 {ns_t_dnskey, "DNSKEY", "DNS key"}, 370 {ns_t_dhcid, "DHCID", "dynamic host configuration identifier"}, 371 {ns_t_nsec3, "NSEC3", "nsec3"}, 372 {ns_t_nsec3param, "NSEC3PARAM", "NSEC3 parameters"}, 373 {ns_t_hip, "HIP", "host identity protocol"}, 374 {ns_t_spf, "SPF", "sender policy framework"}, 375 {ns_t_tkey, "TKEY", "tkey"}, 376 {ns_t_tsig, "TSIG", "transaction signature"}, 377 {ns_t_ixfr, "IXFR", "incremental zone transfer"}, 378 {ns_t_axfr, "AXFR", "zone transfer"}, 379 {ns_t_zxfr, "ZXFR", "compressed zone transfer"}, 380 {ns_t_mailb, "MAILB", "mailbox-related data (deprecated)"}, 381 {ns_t_maila, "MAILA", "mail agent (deprecated)"}, 382 {ns_t_naptr, "NAPTR", "URN Naming Authority"}, 383 {ns_t_kx, "KX", "Key Exchange"}, 384 {ns_t_cert, "CERT", "Certificate"}, 385 {ns_t_a6, "A6", "IPv6 Address"}, 386 {ns_t_dname, "DNAME", "dname"}, 387 {ns_t_sink, "SINK", "Kitchen Sink (experimental)"}, 388 {ns_t_opt, "OPT", "EDNS Options"}, 389 {ns_t_any, "ANY", "\"any\""}, 390 {ns_t_dlv, "DLV", "DNSSEC look-aside validation"}, 391 {0, NULL, NULL}}; 392 393 /* 394 * Names of DNS rcodes. 395 */ 396 static const struct res_sym p_rcode_syms[] = {{ns_r_noerror, "NOERROR", "no error"}, 397 {ns_r_formerr, "FORMERR", "format error"}, 398 {ns_r_servfail, "SERVFAIL", "server failed"}, 399 {ns_r_nxdomain, "NXDOMAIN", "no such domain name"}, 400 {ns_r_notimpl, "NOTIMP", "not implemented"}, 401 {ns_r_refused, "REFUSED", "refused"}, 402 {ns_r_yxdomain, "YXDOMAIN", "domain name exists"}, 403 {ns_r_yxrrset, "YXRRSET", "rrset exists"}, 404 {ns_r_nxrrset, "NXRRSET", "rrset doesn't exist"}, 405 {ns_r_notauth, "NOTAUTH", "not authoritative"}, 406 {ns_r_notzone, "NOTZONE", "Not in zone"}, 407 {ns_r_max, "", ""}, 408 {ns_r_badsig, "BADSIG", "bad signature"}, 409 {ns_r_badkey, "BADKEY", "bad key"}, 410 {ns_r_badtime, "BADTIME", "bad time"}, 411 {0, NULL, NULL}}; 412 413 static const char* sym_ntos(const struct res_sym* syms, int number, int* success) { 414 static char unname[20]; 415 416 for (; syms->name != 0; syms++) { 417 if (number == syms->number) { 418 if (success) *success = 1; 419 return (syms->name); 420 } 421 } 422 423 snprintf(unname, sizeof(unname), "%d", number); /* XXX nonreentrant */ 424 if (success) *success = 0; 425 return (unname); 426 } 427 428 /* 429 * Return a string for the type. 430 */ 431 const char* p_type(int type) { 432 int success; 433 const char* result; 434 static char typebuf[20]; 435 436 result = sym_ntos(p_type_syms, type, &success); 437 if (success) return (result); 438 if (type < 0 || type > 0xffff) return ("BADTYPE"); 439 snprintf(typebuf, sizeof(typebuf), "TYPE%d", type); 440 return (typebuf); 441 } 442 443 /* 444 * Return a string for the type. 445 */ 446 const char* p_section(int section, int opcode) { 447 const struct res_sym* symbols; 448 449 switch (opcode) { 450 case ns_o_update: 451 symbols = p_update_section_syms; 452 break; 453 default: 454 symbols = p_default_section_syms; 455 break; 456 } 457 return (sym_ntos(symbols, section, (int*) 0)); 458 } 459 460 /* 461 * Return a mnemonic for class. 462 */ 463 const char* p_class(int cl) { 464 int success; 465 const char* result; 466 static char classbuf[20]; 467 468 result = sym_ntos(p_class_syms, cl, &success); 469 if (success) return (result); 470 if (cl < 0 || cl > 0xffff) return ("BADCLASS"); 471 snprintf(classbuf, sizeof(classbuf), "CLASS%d", cl); 472 return (classbuf); 473 } 474 475 /* 476 * Return a string for the rcode. 477 */ 478 const char* p_rcode(int rcode) { 479 return (sym_ntos(p_rcode_syms, rcode, (int*) 0)); 480 } 481 482 int resolv_set_log_severity(uint32_t logSeverity) { 483 switch (logSeverity) { 484 case aidl::android::net::IDnsResolver::DNS_RESOLVER_LOG_VERBOSE: 485 logSeverity = android::base::VERBOSE; 486 // *** enable verbose logging only when DBG is set. It prints sensitive data *** 487 if (RESOLV_ALLOW_VERBOSE_LOGGING == false) { 488 logSeverity = android::base::DEBUG; 489 LOG(ERROR) << "Refusing to set VERBOSE logging in non-debuggable build"; 490 // TODO: Return EACCES then callers could know if the log 491 // severity is acceptable 492 } 493 break; 494 case aidl::android::net::IDnsResolver::DNS_RESOLVER_LOG_DEBUG: 495 logSeverity = android::base::DEBUG; 496 break; 497 case aidl::android::net::IDnsResolver::DNS_RESOLVER_LOG_INFO: 498 logSeverity = android::base::INFO; 499 break; 500 case aidl::android::net::IDnsResolver::DNS_RESOLVER_LOG_WARNING: 501 logSeverity = android::base::WARNING; 502 break; 503 case aidl::android::net::IDnsResolver::DNS_RESOLVER_LOG_ERROR: 504 logSeverity = android::base::ERROR; 505 break; 506 default: 507 LOG(ERROR) << __func__ << ": invalid log severity: " << logSeverity; 508 return -EINVAL; 509 } 510 android::base::SetMinimumLogSeverity(static_cast<android::base::LogSeverity>(logSeverity)); 511 return 0; 512 } 513