The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2001 WIDE Project. |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
| 8 | * 1. Redistributions of source code must retain the above copyright |
| 9 | * notice, this list of conditions and the following disclaimer. |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer in the |
| 12 | * documentation and/or other materials provided with the distribution. |
| 13 | * 3. Neither the name of the project nor the names of its contributors |
| 14 | * may be used to endorse or promote products derived from this software |
| 15 | * without specific prior written permission. |
| 16 | * |
| 17 | * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND |
| 18 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE |
| 21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 23 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 25 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 26 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 27 | * SUCH DAMAGE. |
| 28 | */ |
| 29 | |
| 30 | #ifndef lint |
| 31 | static const char rcsid[] _U_ = |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 32 | "@(#) $Header: /tcpdump/master/tcpdump/print-lwres.c,v 1.13 2004-03-24 01:54:29 guy Exp $ (LBL)"; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 33 | #endif |
| 34 | |
| 35 | #ifdef HAVE_CONFIG_H |
| 36 | #include "config.h" |
| 37 | #endif |
| 38 | |
| 39 | #include <tcpdump-stdinc.h> |
| 40 | |
| 41 | #include "nameser.h" |
| 42 | |
| 43 | #include <stdio.h> |
| 44 | #include <string.h> |
| 45 | |
| 46 | #include "interface.h" |
| 47 | #include "addrtoname.h" |
| 48 | #include "extract.h" /* must come after interface.h */ |
| 49 | |
| 50 | /* BIND9 lib/lwres/include/lwres */ |
| 51 | typedef u_int32_t lwres_uint32_t; |
| 52 | typedef u_int16_t lwres_uint16_t; |
| 53 | typedef u_int8_t lwres_uint8_t; |
| 54 | |
| 55 | struct lwres_lwpacket { |
| 56 | lwres_uint32_t length; |
| 57 | lwres_uint16_t version; |
| 58 | lwres_uint16_t pktflags; |
| 59 | lwres_uint32_t serial; |
| 60 | lwres_uint32_t opcode; |
| 61 | lwres_uint32_t result; |
| 62 | lwres_uint32_t recvlength; |
| 63 | lwres_uint16_t authtype; |
| 64 | lwres_uint16_t authlength; |
| 65 | }; |
| 66 | |
| 67 | #define LWRES_LWPACKETFLAG_RESPONSE 0x0001U /* if set, pkt is a response */ |
| 68 | |
| 69 | #define LWRES_LWPACKETVERSION_0 0 |
| 70 | |
| 71 | #define LWRES_FLAG_TRUSTNOTREQUIRED 0x00000001U |
| 72 | #define LWRES_FLAG_SECUREDATA 0x00000002U |
| 73 | |
| 74 | /* |
| 75 | * no-op |
| 76 | */ |
| 77 | #define LWRES_OPCODE_NOOP 0x00000000U |
| 78 | |
| 79 | typedef struct { |
| 80 | /* public */ |
| 81 | lwres_uint16_t datalength; |
| 82 | /* data follows */ |
| 83 | } lwres_nooprequest_t; |
| 84 | |
| 85 | typedef struct { |
| 86 | /* public */ |
| 87 | lwres_uint16_t datalength; |
| 88 | /* data follows */ |
| 89 | } lwres_noopresponse_t; |
| 90 | |
| 91 | /* |
| 92 | * get addresses by name |
| 93 | */ |
| 94 | #define LWRES_OPCODE_GETADDRSBYNAME 0x00010001U |
| 95 | |
| 96 | typedef struct lwres_addr lwres_addr_t; |
| 97 | |
| 98 | struct lwres_addr { |
| 99 | lwres_uint32_t family; |
| 100 | lwres_uint16_t length; |
| 101 | /* address folows */ |
| 102 | }; |
| 103 | |
| 104 | typedef struct { |
| 105 | /* public */ |
| 106 | lwres_uint32_t flags; |
| 107 | lwres_uint32_t addrtypes; |
| 108 | lwres_uint16_t namelen; |
| 109 | /* name follows */ |
| 110 | } lwres_gabnrequest_t; |
| 111 | |
| 112 | typedef struct { |
| 113 | /* public */ |
| 114 | lwres_uint32_t flags; |
| 115 | lwres_uint16_t naliases; |
| 116 | lwres_uint16_t naddrs; |
| 117 | lwres_uint16_t realnamelen; |
| 118 | /* aliases follows */ |
| 119 | /* addrs follows */ |
| 120 | /* realname follows */ |
| 121 | } lwres_gabnresponse_t; |
| 122 | |
| 123 | /* |
| 124 | * get name by address |
| 125 | */ |
| 126 | #define LWRES_OPCODE_GETNAMEBYADDR 0x00010002U |
| 127 | typedef struct { |
| 128 | /* public */ |
| 129 | lwres_uint32_t flags; |
| 130 | lwres_addr_t addr; |
| 131 | /* addr body follows */ |
| 132 | } lwres_gnbarequest_t; |
| 133 | |
| 134 | typedef struct { |
| 135 | /* public */ |
| 136 | lwres_uint32_t flags; |
| 137 | lwres_uint16_t naliases; |
| 138 | lwres_uint16_t realnamelen; |
| 139 | /* aliases follows */ |
| 140 | /* realname follows */ |
| 141 | } lwres_gnbaresponse_t; |
| 142 | |
| 143 | /* |
| 144 | * get rdata by name |
| 145 | */ |
| 146 | #define LWRES_OPCODE_GETRDATABYNAME 0x00010003U |
| 147 | |
| 148 | typedef struct { |
| 149 | /* public */ |
| 150 | lwres_uint32_t flags; |
| 151 | lwres_uint16_t rdclass; |
| 152 | lwres_uint16_t rdtype; |
| 153 | lwres_uint16_t namelen; |
| 154 | /* name follows */ |
| 155 | } lwres_grbnrequest_t; |
| 156 | |
| 157 | typedef struct { |
| 158 | /* public */ |
| 159 | lwres_uint32_t flags; |
| 160 | lwres_uint16_t rdclass; |
| 161 | lwres_uint16_t rdtype; |
| 162 | lwres_uint32_t ttl; |
| 163 | lwres_uint16_t nrdatas; |
| 164 | lwres_uint16_t nsigs; |
| 165 | /* realname here (len + name) */ |
| 166 | /* rdata here (len + name) */ |
| 167 | /* signatures here (len + name) */ |
| 168 | } lwres_grbnresponse_t; |
| 169 | |
| 170 | #define LWRDATA_VALIDATED 0x00000001 |
| 171 | |
| 172 | #define LWRES_ADDRTYPE_V4 0x00000001U /* ipv4 */ |
| 173 | #define LWRES_ADDRTYPE_V6 0x00000002U /* ipv6 */ |
| 174 | |
| 175 | #define LWRES_MAX_ALIASES 16 /* max # of aliases */ |
| 176 | #define LWRES_MAX_ADDRS 64 /* max # of addrs */ |
| 177 | |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 178 | static const struct tok opcode[] = { |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 179 | { LWRES_OPCODE_NOOP, "noop", }, |
| 180 | { LWRES_OPCODE_GETADDRSBYNAME, "getaddrsbyname", }, |
| 181 | { LWRES_OPCODE_GETNAMEBYADDR, "getnamebyaddr", }, |
| 182 | { LWRES_OPCODE_GETRDATABYNAME, "getrdatabyname", }, |
| 183 | { 0, NULL, }, |
| 184 | }; |
| 185 | |
| 186 | /* print-domain.c */ |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 187 | extern const struct tok ns_type2str[]; |
| 188 | extern const struct tok ns_class2str[]; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 189 | |
| 190 | static int lwres_printname(size_t, const char *); |
| 191 | static int lwres_printnamelen(const char *); |
| 192 | static int lwres_printbinlen(const char *); |
| 193 | static int lwres_printaddr(lwres_addr_t *); |
| 194 | |
| 195 | static int |
| 196 | lwres_printname(size_t l, const char *p0) |
| 197 | { |
| 198 | const char *p; |
| 199 | size_t i; |
| 200 | |
| 201 | p = p0; |
| 202 | /* + 1 for terminating \0 */ |
| 203 | if (p + l + 1 > (const char *)snapend) |
| 204 | goto trunc; |
| 205 | |
| 206 | printf(" "); |
| 207 | for (i = 0; i < l; i++) |
| 208 | safeputchar(*p++); |
| 209 | p++; /* skip terminating \0 */ |
| 210 | |
| 211 | return p - p0; |
| 212 | |
| 213 | trunc: |
| 214 | return -1; |
| 215 | } |
| 216 | |
| 217 | static int |
| 218 | lwres_printnamelen(const char *p) |
| 219 | { |
| 220 | u_int16_t l; |
| 221 | int advance; |
| 222 | |
| 223 | if (p + 2 > (const char *)snapend) |
| 224 | goto trunc; |
| 225 | l = EXTRACT_16BITS(p); |
| 226 | advance = lwres_printname(l, p + 2); |
| 227 | if (advance < 0) |
| 228 | goto trunc; |
| 229 | return 2 + advance; |
| 230 | |
| 231 | trunc: |
| 232 | return -1; |
| 233 | } |
| 234 | |
| 235 | static int |
| 236 | lwres_printbinlen(const char *p0) |
| 237 | { |
| 238 | const char *p; |
| 239 | u_int16_t l; |
| 240 | int i; |
| 241 | |
| 242 | p = p0; |
| 243 | if (p + 2 > (const char *)snapend) |
| 244 | goto trunc; |
| 245 | l = EXTRACT_16BITS(p); |
| 246 | if (p + 2 + l > (const char *)snapend) |
| 247 | goto trunc; |
| 248 | p += 2; |
| 249 | for (i = 0; i < l; i++) |
| 250 | printf("%02x", *p++); |
| 251 | return p - p0; |
| 252 | |
| 253 | trunc: |
| 254 | return -1; |
| 255 | } |
| 256 | |
| 257 | static int |
| 258 | lwres_printaddr(lwres_addr_t *ap) |
| 259 | { |
| 260 | u_int16_t l; |
| 261 | const char *p; |
| 262 | int i; |
| 263 | |
| 264 | TCHECK(ap->length); |
| 265 | l = EXTRACT_16BITS(&ap->length); |
| 266 | /* XXX ap points to packed struct */ |
| 267 | p = (const char *)&ap->length + sizeof(ap->length); |
| 268 | TCHECK2(*p, l); |
| 269 | |
| 270 | switch (EXTRACT_32BITS(&ap->family)) { |
| 271 | case 1: /* IPv4 */ |
| 272 | if (l < 4) |
| 273 | return -1; |
| 274 | printf(" %s", ipaddr_string(p)); |
| 275 | p += sizeof(struct in_addr); |
| 276 | break; |
| 277 | #ifdef INET6 |
| 278 | case 2: /* IPv6 */ |
| 279 | if (l < 16) |
| 280 | return -1; |
| 281 | printf(" %s", ip6addr_string(p)); |
| 282 | p += sizeof(struct in6_addr); |
| 283 | break; |
| 284 | #endif |
| 285 | default: |
| 286 | printf(" %u/", EXTRACT_32BITS(&ap->family)); |
| 287 | for (i = 0; i < l; i++) |
| 288 | printf("%02x", *p++); |
| 289 | } |
| 290 | |
| 291 | return p - (const char *)ap; |
| 292 | |
| 293 | trunc: |
| 294 | return -1; |
| 295 | } |
| 296 | |
| 297 | void |
| 298 | lwres_print(register const u_char *bp, u_int length) |
| 299 | { |
| 300 | const struct lwres_lwpacket *np; |
| 301 | u_int32_t v; |
| 302 | const char *s; |
| 303 | int response; |
| 304 | int advance; |
| 305 | int unsupported = 0; |
| 306 | |
| 307 | np = (const struct lwres_lwpacket *)bp; |
| 308 | TCHECK(np->authlength); |
| 309 | |
| 310 | printf(" lwres"); |
| 311 | v = EXTRACT_16BITS(&np->version); |
| 312 | if (vflag || v != LWRES_LWPACKETVERSION_0) |
| 313 | printf(" v%u", v); |
| 314 | if (v != LWRES_LWPACKETVERSION_0) { |
| 315 | s = (const char *)np + EXTRACT_32BITS(&np->length); |
| 316 | goto tail; |
| 317 | } |
| 318 | |
| 319 | response = EXTRACT_16BITS(&np->pktflags) & LWRES_LWPACKETFLAG_RESPONSE; |
| 320 | |
| 321 | /* opcode and pktflags */ |
| 322 | v = EXTRACT_32BITS(&np->opcode); |
| 323 | s = tok2str(opcode, "#0x%x", v); |
| 324 | printf(" %s%s", s, response ? "" : "?"); |
| 325 | |
| 326 | /* pktflags */ |
| 327 | v = EXTRACT_16BITS(&np->pktflags); |
| 328 | if (v & ~LWRES_LWPACKETFLAG_RESPONSE) |
| 329 | printf("[0x%x]", v); |
| 330 | |
| 331 | if (vflag > 1) { |
| 332 | printf(" ("); /*)*/ |
| 333 | printf("serial:0x%x", EXTRACT_32BITS(&np->serial)); |
| 334 | printf(" result:0x%x", EXTRACT_32BITS(&np->result)); |
| 335 | printf(" recvlen:%u", EXTRACT_32BITS(&np->recvlength)); |
| 336 | /* BIND910: not used */ |
| 337 | if (vflag > 2) { |
| 338 | printf(" authtype:0x%x", EXTRACT_16BITS(&np->authtype)); |
| 339 | printf(" authlen:%u", EXTRACT_16BITS(&np->authlength)); |
| 340 | } |
| 341 | /*(*/ |
| 342 | printf(")"); |
| 343 | } |
| 344 | |
| 345 | /* per-opcode content */ |
| 346 | if (!response) { |
| 347 | /* |
| 348 | * queries |
| 349 | */ |
| 350 | lwres_gabnrequest_t *gabn; |
| 351 | lwres_gnbarequest_t *gnba; |
| 352 | lwres_grbnrequest_t *grbn; |
| 353 | u_int32_t l; |
| 354 | |
| 355 | gabn = NULL; |
| 356 | gnba = NULL; |
| 357 | grbn = NULL; |
| 358 | |
| 359 | switch (EXTRACT_32BITS(&np->opcode)) { |
| 360 | case LWRES_OPCODE_NOOP: |
| 361 | break; |
| 362 | case LWRES_OPCODE_GETADDRSBYNAME: |
| 363 | gabn = (lwres_gabnrequest_t *)(np + 1); |
| 364 | TCHECK(gabn->namelen); |
| 365 | /* XXX gabn points to packed struct */ |
| 366 | s = (const char *)&gabn->namelen + |
| 367 | sizeof(gabn->namelen); |
| 368 | l = EXTRACT_16BITS(&gabn->namelen); |
| 369 | |
| 370 | /* BIND910: not used */ |
| 371 | if (vflag > 2) { |
| 372 | printf(" flags:0x%x", |
| 373 | EXTRACT_32BITS(&gabn->flags)); |
| 374 | } |
| 375 | |
| 376 | v = EXTRACT_32BITS(&gabn->addrtypes); |
| 377 | switch (v & (LWRES_ADDRTYPE_V4 | LWRES_ADDRTYPE_V6)) { |
| 378 | case LWRES_ADDRTYPE_V4: |
| 379 | printf(" IPv4"); |
| 380 | break; |
| 381 | case LWRES_ADDRTYPE_V6: |
| 382 | printf(" IPv6"); |
| 383 | break; |
| 384 | case LWRES_ADDRTYPE_V4 | LWRES_ADDRTYPE_V6: |
| 385 | printf(" IPv4/6"); |
| 386 | break; |
| 387 | } |
| 388 | if (v & ~(LWRES_ADDRTYPE_V4 | LWRES_ADDRTYPE_V6)) |
| 389 | printf("[0x%x]", v); |
| 390 | |
| 391 | advance = lwres_printname(l, s); |
| 392 | if (advance < 0) |
| 393 | goto trunc; |
| 394 | s += advance; |
| 395 | break; |
| 396 | case LWRES_OPCODE_GETNAMEBYADDR: |
| 397 | gnba = (lwres_gnbarequest_t *)(np + 1); |
| 398 | TCHECK(gnba->addr); |
| 399 | |
| 400 | /* BIND910: not used */ |
| 401 | if (vflag > 2) { |
| 402 | printf(" flags:0x%x", |
| 403 | EXTRACT_32BITS(&gnba->flags)); |
| 404 | } |
| 405 | |
| 406 | s = (const char *)&gnba->addr; |
| 407 | |
| 408 | advance = lwres_printaddr(&gnba->addr); |
| 409 | if (advance < 0) |
| 410 | goto trunc; |
| 411 | s += advance; |
| 412 | break; |
| 413 | case LWRES_OPCODE_GETRDATABYNAME: |
| 414 | /* XXX no trace, not tested */ |
| 415 | grbn = (lwres_grbnrequest_t *)(np + 1); |
| 416 | TCHECK(grbn->namelen); |
| 417 | |
| 418 | /* BIND910: not used */ |
| 419 | if (vflag > 2) { |
| 420 | printf(" flags:0x%x", |
| 421 | EXTRACT_32BITS(&grbn->flags)); |
| 422 | } |
| 423 | |
| 424 | printf(" %s", tok2str(ns_type2str, "Type%d", |
| 425 | EXTRACT_16BITS(&grbn->rdtype))); |
| 426 | if (EXTRACT_16BITS(&grbn->rdclass) != C_IN) { |
| 427 | printf(" %s", tok2str(ns_class2str, "Class%d", |
| 428 | EXTRACT_16BITS(&grbn->rdclass))); |
| 429 | } |
| 430 | |
| 431 | /* XXX grbn points to packed struct */ |
| 432 | s = (const char *)&grbn->namelen + |
| 433 | sizeof(grbn->namelen); |
| 434 | l = EXTRACT_16BITS(&grbn->namelen); |
| 435 | |
| 436 | advance = lwres_printname(l, s); |
| 437 | if (advance < 0) |
| 438 | goto trunc; |
| 439 | s += advance; |
| 440 | break; |
| 441 | default: |
| 442 | unsupported++; |
| 443 | break; |
| 444 | } |
| 445 | } else { |
| 446 | /* |
| 447 | * responses |
| 448 | */ |
| 449 | lwres_gabnresponse_t *gabn; |
| 450 | lwres_gnbaresponse_t *gnba; |
| 451 | lwres_grbnresponse_t *grbn; |
| 452 | u_int32_t l, na; |
| 453 | u_int32_t i; |
| 454 | |
| 455 | gabn = NULL; |
| 456 | gnba = NULL; |
| 457 | grbn = NULL; |
| 458 | |
| 459 | switch (EXTRACT_32BITS(&np->opcode)) { |
| 460 | case LWRES_OPCODE_NOOP: |
| 461 | break; |
| 462 | case LWRES_OPCODE_GETADDRSBYNAME: |
| 463 | gabn = (lwres_gabnresponse_t *)(np + 1); |
| 464 | TCHECK(gabn->realnamelen); |
| 465 | /* XXX gabn points to packed struct */ |
| 466 | s = (const char *)&gabn->realnamelen + |
| 467 | sizeof(gabn->realnamelen); |
| 468 | l = EXTRACT_16BITS(&gabn->realnamelen); |
| 469 | |
| 470 | /* BIND910: not used */ |
| 471 | if (vflag > 2) { |
| 472 | printf(" flags:0x%x", |
| 473 | EXTRACT_32BITS(&gabn->flags)); |
| 474 | } |
| 475 | |
| 476 | printf(" %u/%u", EXTRACT_16BITS(&gabn->naliases), |
| 477 | EXTRACT_16BITS(&gabn->naddrs)); |
| 478 | |
| 479 | advance = lwres_printname(l, s); |
| 480 | if (advance < 0) |
| 481 | goto trunc; |
| 482 | s += advance; |
| 483 | |
| 484 | /* aliases */ |
| 485 | na = EXTRACT_16BITS(&gabn->naliases); |
| 486 | for (i = 0; i < na; i++) { |
| 487 | advance = lwres_printnamelen(s); |
| 488 | if (advance < 0) |
| 489 | goto trunc; |
| 490 | s += advance; |
| 491 | } |
| 492 | |
| 493 | /* addrs */ |
| 494 | na = EXTRACT_16BITS(&gabn->naddrs); |
| 495 | for (i = 0; i < na; i++) { |
| 496 | advance = lwres_printaddr((lwres_addr_t *)s); |
| 497 | if (advance < 0) |
| 498 | goto trunc; |
| 499 | s += advance; |
| 500 | } |
| 501 | break; |
| 502 | case LWRES_OPCODE_GETNAMEBYADDR: |
| 503 | gnba = (lwres_gnbaresponse_t *)(np + 1); |
| 504 | TCHECK(gnba->realnamelen); |
| 505 | /* XXX gnba points to packed struct */ |
| 506 | s = (const char *)&gnba->realnamelen + |
| 507 | sizeof(gnba->realnamelen); |
| 508 | l = EXTRACT_16BITS(&gnba->realnamelen); |
| 509 | |
| 510 | /* BIND910: not used */ |
| 511 | if (vflag > 2) { |
| 512 | printf(" flags:0x%x", |
| 513 | EXTRACT_32BITS(&gnba->flags)); |
| 514 | } |
| 515 | |
| 516 | printf(" %u", EXTRACT_16BITS(&gnba->naliases)); |
| 517 | |
| 518 | advance = lwres_printname(l, s); |
| 519 | if (advance < 0) |
| 520 | goto trunc; |
| 521 | s += advance; |
| 522 | |
| 523 | /* aliases */ |
| 524 | na = EXTRACT_16BITS(&gnba->naliases); |
| 525 | for (i = 0; i < na; i++) { |
| 526 | advance = lwres_printnamelen(s); |
| 527 | if (advance < 0) |
| 528 | goto trunc; |
| 529 | s += advance; |
| 530 | } |
| 531 | break; |
| 532 | case LWRES_OPCODE_GETRDATABYNAME: |
| 533 | /* XXX no trace, not tested */ |
| 534 | grbn = (lwres_grbnresponse_t *)(np + 1); |
| 535 | TCHECK(grbn->nsigs); |
| 536 | |
| 537 | /* BIND910: not used */ |
| 538 | if (vflag > 2) { |
| 539 | printf(" flags:0x%x", |
| 540 | EXTRACT_32BITS(&grbn->flags)); |
| 541 | } |
| 542 | |
| 543 | printf(" %s", tok2str(ns_type2str, "Type%d", |
| 544 | EXTRACT_16BITS(&grbn->rdtype))); |
| 545 | if (EXTRACT_16BITS(&grbn->rdclass) != C_IN) { |
| 546 | printf(" %s", tok2str(ns_class2str, "Class%d", |
| 547 | EXTRACT_16BITS(&grbn->rdclass))); |
| 548 | } |
| 549 | printf(" TTL "); |
| 550 | relts_print(EXTRACT_32BITS(&grbn->ttl)); |
| 551 | printf(" %u/%u", EXTRACT_16BITS(&grbn->nrdatas), |
| 552 | EXTRACT_16BITS(&grbn->nsigs)); |
| 553 | |
| 554 | /* XXX grbn points to packed struct */ |
| 555 | s = (const char *)&grbn->nsigs+ sizeof(grbn->nsigs); |
| 556 | |
| 557 | advance = lwres_printnamelen(s); |
| 558 | if (advance < 0) |
| 559 | goto trunc; |
| 560 | s += advance; |
| 561 | |
| 562 | /* rdatas */ |
| 563 | na = EXTRACT_16BITS(&grbn->nrdatas); |
| 564 | for (i = 0; i < na; i++) { |
| 565 | /* XXX should decode resource data */ |
| 566 | advance = lwres_printbinlen(s); |
| 567 | if (advance < 0) |
| 568 | goto trunc; |
| 569 | s += advance; |
| 570 | } |
| 571 | |
| 572 | /* sigs */ |
| 573 | na = EXTRACT_16BITS(&grbn->nsigs); |
| 574 | for (i = 0; i < na; i++) { |
| 575 | /* XXX how should we print it? */ |
| 576 | advance = lwres_printbinlen(s); |
| 577 | if (advance < 0) |
| 578 | goto trunc; |
| 579 | s += advance; |
| 580 | } |
| 581 | break; |
| 582 | default: |
| 583 | unsupported++; |
| 584 | break; |
| 585 | } |
| 586 | } |
| 587 | |
| 588 | tail: |
| 589 | /* length mismatch */ |
| 590 | if (EXTRACT_32BITS(&np->length) != length) { |
| 591 | printf(" [len: %u != %u]", EXTRACT_32BITS(&np->length), |
| 592 | length); |
| 593 | } |
| 594 | if (!unsupported && s < (const char *)np + EXTRACT_32BITS(&np->length)) |
| 595 | printf("[extra]"); |
| 596 | return; |
| 597 | |
| 598 | trunc: |
| 599 | printf("[|lwres]"); |
| 600 | return; |
| 601 | } |