libcli/nbt/nbtname.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    manipulate nbt name structures
   5
   6    Copyright (C) Andrew Tridgell 2005
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 */
  21
  22 /*
  23   see rfc1002 for the detailed format of compressed names
  24 */
  25
  26 #include "includes.h"
  27 #include "librpc/gen_ndr/ndr_nbt.h"
  28 #include "librpc/gen_ndr/ndr_misc.h"
  29 #include "system/locale.h"
  30
  31 /* don't allow an unlimited number of name components */
  32 #define MAX_COMPONENTS 10
  33
  34 /**
  35   print a nbt string
  36 */
  37 _PUBLIC_ void ndr_print_nbt_string(struct ndr_print *ndr, const char *name, const char *s)
  38 {
  39         ndr_print_string(ndr, name, s);
  40 }
  41
  42 /*
  43   pull one component of a nbt_string
  44 */
  45 static enum ndr_err_code ndr_pull_component(struct ndr_pull *ndr,
  46                                             uint8_t **component,
  47                                             uint32_t *offset,
  48                                             uint32_t *max_offset)
  49 {
  50         uint8_t len;
  51         uint_t loops = 0;
  52         while (loops < 5) {
  53                 if (*offset >= ndr->data_size) {
  54                         return ndr_pull_error(ndr, NDR_ERR_STRING,
  55                                               "BAD NBT NAME component");
  56                 }
  57                 len = ndr->data[*offset];
  58                 if (len == 0) {
  59                         *offset += 1;
  60                         *max_offset = MAX(*max_offset, *offset);
  61                         *component = NULL;
  62                         return NDR_ERR_SUCCESS;
  63                 }
  64                 if ((len & 0xC0) == 0xC0) {
  65                         /* its a label pointer */
  66                         if (1 + *offset >= ndr->data_size) {
  67                                 return ndr_pull_error(ndr, NDR_ERR_STRING,
  68                                                       "BAD NBT NAME component");
  69                         }
  70                         *max_offset = MAX(*max_offset, *offset + 2);
  71                         *offset = ((len&0x3F)<<8) | ndr->data[1 + *offset];
  72                         *max_offset = MAX(*max_offset, *offset);
  73                         loops++;
  74                         continue;
  75                 }
  76                 if ((len & 0xC0) != 0) {
  77                         /* its a reserved length field */
  78                         return ndr_pull_error(ndr, NDR_ERR_STRING,
  79                                               "BAD NBT NAME component");
  80                 }
  81                 if (*offset + len + 2 > ndr->data_size) {
  82                         return ndr_pull_error(ndr, NDR_ERR_STRING,
  83                                               "BAD NBT NAME component");
  84                 }
  85                 *component = (uint8_t*)talloc_strndup(
  86                         ndr->current_mem_ctx,
  87                         (const char *)&ndr->data[1 + *offset], len);
  88                 NDR_ERR_HAVE_NO_MEMORY(*component);
  89                 *offset += len + 1;
  90                 *max_offset = MAX(*max_offset, *offset);
  91                 return NDR_ERR_SUCCESS;
  92         }
  93
  94         /* too many pointers */
  95         return ndr_pull_error(ndr, NDR_ERR_STRING, "BAD NBT NAME component");
  96 }
  97
  98 /**
  99   pull a nbt_string from the wire
 100 */
 101 _PUBLIC_ enum ndr_err_code ndr_pull_nbt_string(struct ndr_pull *ndr, int ndr_flags, const char **s)
 102 {
 103         uint32_t offset = ndr->offset;
 104         uint32_t max_offset = offset;
 105         unsigned num_components;
 106         char *name;
 107
 108         if (!(ndr_flags & NDR_SCALARS)) {
 109                 return NDR_ERR_SUCCESS;
 110         }
 111
 112         name = NULL;
 113
 114         /* break up name into a list of components */
 115         for (num_components=0;num_components<MAX_COMPONENTS;num_components++) {
 116                 uint8_t *component = NULL;
 117                 NDR_CHECK(ndr_pull_component(ndr, &component, &offset, &max_offset));
 118                 if (component == NULL) break;
 119                 if (name) {
 120                         name = talloc_asprintf_append_buffer(name, ".%s", component);
 121                         NDR_ERR_HAVE_NO_MEMORY(name);
 122                 } else {
 123                         name = (char *)component;
 124                 }
 125         }
 126         if (num_components == MAX_COMPONENTS) {
 127                 return ndr_pull_error(ndr, NDR_ERR_STRING,
 128                                       "BAD NBT NAME too many components");
 129         }
 130         if (num_components == 0) {
 131                 name = talloc_strdup(ndr->current_mem_ctx, "");
 132                 NDR_ERR_HAVE_NO_MEMORY(name);
 133         }
 134
 135         (*s) = name;
 136         ndr->offset = max_offset;
 137
 138         return NDR_ERR_SUCCESS;
 139 }
 140
 141 /**
 142   push a nbt string to the wire
 143 */
 144 _PUBLIC_ enum ndr_err_code ndr_push_nbt_string(struct ndr_push *ndr, int ndr_flags, const char *s)
 145 {
 146         if (!(ndr_flags & NDR_SCALARS)) {
 147                 return NDR_ERR_SUCCESS;
 148         }
 149
 150         while (s && *s) {
 151                 enum ndr_err_code ndr_err;
 152                 char *compname;
 153                 size_t complen;
 154                 uint32_t offset;
 155
 156                 /* see if we have pushed the remaing string allready,
 157                  * if so we use a label pointer to this string
 158                  */
 159                 ndr_err = ndr_token_retrieve_cmp_fn(&ndr->nbt_string_list, s, &offset, (comparison_fn_t)strcmp, false);
 160                 if (NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 161                         uint8_t b[2];
 162
 163                         if (offset > 0x3FFF) {
 164                                 return ndr_push_error(ndr, NDR_ERR_STRING,
 165                                                       "offset for nbt string label pointer %u[%08X] > 0x00003FFF",
 166                                                       offset, offset);
 167                         }
 168
 169                         b[0] = 0xC0 | (offset>>8);
 170                         b[1] = (offset & 0xFF);
 171
 172                         return ndr_push_bytes(ndr, b, 2);
 173                 }
 174
 175                 complen = strcspn(s, ".");
 176
 177                 /* we need to make sure the length fits into 6 bytes */
 178                 if (complen >= 0x3F) {
 179                         return ndr_push_error(ndr, NDR_ERR_STRING,
 180                                               "component length %u[%08X] > 0x00003F",
 181                                               (unsigned)complen, (unsigned)complen);
 182                 }
 183
 184                 compname = talloc_asprintf(ndr, "%c%*.*s",
 185                                                 (unsigned char)complen,
 186                                                 (unsigned char)complen,
 187                                                 (unsigned char)complen, s);
 188                 NDR_ERR_HAVE_NO_MEMORY(compname);
 189
 190                 /* remember the current componemt + the rest of the string
 191                  * so it can be reused later
 192                  */
 193                 NDR_CHECK(ndr_token_store(ndr, &ndr->nbt_string_list, s, ndr->offset));
 194
 195                 /* push just this component into the blob */
 196                 NDR_CHECK(ndr_push_bytes(ndr, (const uint8_t *)compname, complen+1));
 197                 talloc_free(compname);
 198
 199                 s += complen;
 200                 if (*s == '.') s++;
 201         }
 202
 203         /* if we reach the end of the string and have pushed the last component
 204          * without using a label pointer, we need to terminate the string
 205          */
 206         return ndr_push_bytes(ndr, (const uint8_t *)"", 1);
 207 }
 208
 209
 210 /*
 211   decompress a 'compressed' name component
 212  */
 213 static bool decompress_name(char *name, enum nbt_name_type *type)
 214 {
 215         int i;
 216         for (i=0;name[2*i];i++) {
 217                 uint8_t c1 = name[2*i];
 218                 uint8_t c2 = name[1+(2*i)];
 219                 if (c1 < 'A' || c1 > 'P' ||
 220                     c2 < 'A' || c2 > 'P') {
 221                         return false;
 222                 }
 223                 name[i] = ((c1-'A')<<4) | (c2-'A');
 224         }
 225         name[i] = 0;
 226         if (i == 16) {
 227                 *type = (enum nbt_name_type)(name[15]);
 228                 name[15] = 0;
 229                 i--;
 230         } else {
 231                 *type = NBT_NAME_CLIENT;
 232         }
 233
 234         /* trim trailing spaces */
 235         for (;i>0 && name[i-1]==' ';i--) {
 236                 name[i-1] = 0;
 237         }
 238
 239         return true;
 240 }
 241
 242
 243 /*
 244   compress a name component
 245  */
 246 static uint8_t *compress_name(TALLOC_CTX *mem_ctx,
 247                               const uint8_t *name, enum nbt_name_type type)
 248 {
 249         uint8_t *cname;
 250         int i;
 251         uint8_t pad_char;
 252
 253         if (strlen((const char *)name) > 15) {
 254                 return NULL;
 255         }
 256
 257         cname = talloc_array(mem_ctx, uint8_t, 33);
 258         if (cname == NULL) return NULL;
 259
 260         for (i=0;name[i];i++) {
 261                 cname[2*i]   = 'A' + (name[i]>>4);
 262                 cname[1+2*i] = 'A' + (name[i]&0xF);
 263         }
 264         if (strcmp((const char *)name, "*") == 0) {
 265                 pad_char = 0;
 266         } else {
 267                 pad_char = ' ';
 268         }
 269         for (;i<15;i++) {
 270                 cname[2*i]   = 'A' + (pad_char>>4);
 271                 cname[1+2*i] = 'A' + (pad_char&0xF);
 272         }
 273
 274         pad_char = type;
 275         cname[2*i]   = 'A' + (pad_char>>4);
 276         cname[1+2*i] = 'A' + (pad_char&0xF);
 277
 278         cname[32] = 0;
 279         return cname;
 280 }
 281
 282
 283 /**
 284   pull a nbt name from the wire
 285 */
 286 _PUBLIC_ enum ndr_err_code ndr_pull_nbt_name(struct ndr_pull *ndr, int ndr_flags, struct nbt_name *r)
 287 {
 288         uint8_t *scope;
 289         char *cname;
 290         const char *s;
 291         bool ok;
 292
 293         if (!(ndr_flags & NDR_SCALARS)) {
 294                 return NDR_ERR_SUCCESS;
 295         }
 296
 297         NDR_CHECK(ndr_pull_nbt_string(ndr, ndr_flags, &s));
 298
 299         scope = (uint8_t *)strchr(s, '.');
 300         if (scope) {
 301                 *scope = 0;
 302                 r->scope = talloc_strdup(ndr->current_mem_ctx, (const char *)&scope[1]);
 303                 NDR_ERR_HAVE_NO_MEMORY(r->scope);
 304         } else {
 305                 r->scope = NULL;
 306         }
 307
 308         cname = discard_const_p(char, s);
 309
 310         /* the first component is limited to 16 bytes in the DOS charset,
 311            which is 32 in the 'compressed' form */
 312         if (strlen(cname) > 32) {
 313                 return ndr_pull_error(ndr, NDR_ERR_STRING,
 314                                       "NBT NAME cname > 32");
 315         }
 316
 317         /* decompress the first component */
 318         ok = decompress_name(cname, &r->type);
 319         if (!ok) {
 320                 return ndr_pull_error(ndr, NDR_ERR_STRING,
 321                                       "NBT NAME failed to decompress");
 322         }
 323
 324         r->name = talloc_strdup(ndr->current_mem_ctx, cname);
 325         NDR_ERR_HAVE_NO_MEMORY(r->name);
 326
 327         talloc_free(cname);
 328
 329         return NDR_ERR_SUCCESS;
 330 }
 331
 332 /**
 333   push a nbt name to the wire
 334 */
 335 _PUBLIC_ enum ndr_err_code ndr_push_nbt_name(struct ndr_push *ndr, int ndr_flags, const struct nbt_name *r)
 336 {
 337         uint8_t *cname, *fullname;
 338         enum ndr_err_code ndr_err;
 339
 340         if (!(ndr_flags & NDR_SCALARS)) {
 341                 return NDR_ERR_SUCCESS;
 342         }
 343
 344         if (strlen(r->name) > 15) {
 345                 return ndr_push_error(ndr, NDR_ERR_STRING,
 346                                       "nbt_name longer as 15 chars: %s",
 347                                       r->name);
 348         }
 349
 350         cname = compress_name(ndr, (const uint8_t *)r->name, r->type);
 351         NDR_ERR_HAVE_NO_MEMORY(cname);
 352
 353         if (r->scope) {
 354                 fullname = (uint8_t *)talloc_asprintf(ndr, "%s.%s", cname, r->scope);
 355                 NDR_ERR_HAVE_NO_MEMORY(fullname);
 356                 talloc_free(cname);
 357         } else {
 358                 fullname = cname;
 359         }
 360
 361         ndr_err = ndr_push_nbt_string(ndr, ndr_flags, (const char *)fullname);
 362
 363         return ndr_err;
 364 }
 365
 366
 367 /**
 368   copy a nbt name structure
 369 */
 370 _PUBLIC_ NTSTATUS nbt_name_dup(TALLOC_CTX *mem_ctx, struct nbt_name *name, struct nbt_name *newname)
 371 {
 372         *newname = *name;
 373         newname->name = talloc_strdup(mem_ctx, newname->name);
 374         NT_STATUS_HAVE_NO_MEMORY(newname->name);
 375         newname->scope = talloc_strdup(mem_ctx, newname->scope);
 376         if (name->scope) {
 377                 NT_STATUS_HAVE_NO_MEMORY(newname->scope);
 378         }
 379         return NT_STATUS_OK;
 380 }
 381
 382 /**
 383   push a nbt name into a blob
 384 */
 385 _PUBLIC_ NTSTATUS nbt_name_to_blob(TALLOC_CTX *mem_ctx, struct smb_iconv_convenience *iconv_convenience, DATA_BLOB *blob, struct nbt_name *name)
 386 {
 387         enum ndr_err_code ndr_err;
 388
 389         ndr_err = ndr_push_struct_blob(blob, mem_ctx, iconv_convenience, name, (ndr_push_flags_fn_t)ndr_push_nbt_name);
 390         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 391                 return ndr_map_error2ntstatus(ndr_err);
 392         }
 393
 394         return NT_STATUS_OK;
 395 }
 396
 397 /**
 398   pull a nbt name from a blob
 399 */
 400 _PUBLIC_ NTSTATUS nbt_name_from_blob(TALLOC_CTX *mem_ctx, const DATA_BLOB *blob, struct nbt_name *name)
 401 {
 402         enum ndr_err_code ndr_err;
 403
 404         ndr_err = ndr_pull_struct_blob(blob, mem_ctx, NULL, name,
 405                                        (ndr_pull_flags_fn_t)ndr_pull_nbt_name);
 406         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 407                 return ndr_map_error2ntstatus(ndr_err);
 408         }
 409
 410         return NT_STATUS_OK;
 411 }
 412
 413
 414 /**
 415   choose a name to use when calling a server in a NBT session request.
 416   we use heuristics to see if the name we have been given is a IP
 417   address, or a too-long name. If it is then use *SMBSERVER, or a
 418   truncated name
 419 */
 420 _PUBLIC_ void nbt_choose_called_name(TALLOC_CTX *mem_ctx,
 421                             struct nbt_name *n, const char *name, int type)
 422 {
 423         n->scope = NULL;
 424         n->type = type;
 425
 426         if ((name == NULL) || is_ipaddress(name)) {
 427                 n->name = "*SMBSERVER";
 428                 return;
 429         }
 430         if (strlen(name) > 15) {
 431                 const char *p = strchr(name, '.');
 432                 char *s;
 433                 if (p - name > 15) {
 434                         n->name = "*SMBSERVER";
 435                         return;
 436                 }
 437                 s = talloc_strndup(mem_ctx, name, PTR_DIFF(p, name));
 438                 n->name = talloc_strdup_upper(mem_ctx, s);
 439                 return;
 440         }
 441
 442         n->name = talloc_strdup_upper(mem_ctx, name);
 443 }
 444
 445
 446 /*
 447   escape a string into a form containing only a small set of characters,
 448   the rest is hex encoded. This is similar to URL encoding
 449 */
 450 static const char *nbt_hex_encode(TALLOC_CTX *mem_ctx, const char *s)
 451 {
 452         int i, len;
 453         char *ret;
 454         const char *valid_chars = "_-.$@ ";
 455 #define NBT_CHAR_ALLOW(c) (isalnum((unsigned char)c) || strchr(valid_chars, c))
 456
 457         for (len=i=0;s[i];i++,len++) {
 458                 if (!NBT_CHAR_ALLOW(s[i])) {
 459                         len += 2;
 460                 }
 461         }
 462
 463         ret = talloc_array(mem_ctx, char, len+1);
 464         if (ret == NULL) return NULL;
 465
 466         for (len=i=0;s[i];i++) {
 467                 if (NBT_CHAR_ALLOW(s[i])) {
 468                         ret[len++] = s[i];
 469                 } else {
 470                         snprintf(&ret[len], 4, "%%%02x", (unsigned char)s[i]);
 471                         len += 3;
 472                 }
 473         }
 474         ret[len] = 0;
 475
 476         return ret;
 477 }
 478
 479
 480 /**
 481   form a string for a NBT name
 482 */
 483 _PUBLIC_ char *nbt_name_string(TALLOC_CTX *mem_ctx, const struct nbt_name *name)
 484 {
 485         TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
 486         char *ret;
 487         if (name->scope) {
 488                 ret = talloc_asprintf(mem_ctx, "%s<%02x>-%s",
 489                                       nbt_hex_encode(tmp_ctx, name->name),
 490                                       name->type,
 491                                       nbt_hex_encode(tmp_ctx, name->scope));
 492         } else {
 493                 ret = talloc_asprintf(mem_ctx, "%s<%02x>",
 494                                       nbt_hex_encode(tmp_ctx, name->name),
 495                                       name->type);
 496         }
 497         talloc_free(tmp_ctx);
 498         return ret;
 499 }
 500
 501 /**
 502   pull a nbt name, WINS Replication uses another on wire format for nbt name
 503 */
 504 _PUBLIC_ enum ndr_err_code ndr_pull_wrepl_nbt_name(struct ndr_pull *ndr, int ndr_flags, const struct nbt_name **_r)
 505 {
 506         struct nbt_name *r;
 507         uint8_t *namebuf;
 508         uint32_t namebuf_len;
 509
 510         if (!(ndr_flags & NDR_SCALARS)) {
 511                 return NDR_ERR_SUCCESS;
 512         }
 513
 514         NDR_CHECK(ndr_pull_align(ndr, 4));
 515         NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &namebuf_len));
 516         if (namebuf_len < 1 || namebuf_len > 255) {
 517                 return ndr_pull_error(ndr, NDR_ERR_ALLOC, "value out of range");
 518         }
 519         NDR_PULL_ALLOC_N(ndr, namebuf, namebuf_len);
 520         NDR_CHECK(ndr_pull_array_uint8(ndr, NDR_SCALARS, namebuf, namebuf_len));
 521
 522         NDR_PULL_ALLOC(ndr, r);
 523
 524         /* oh wow, what a nasty bug in windows ... */
 525         if (namebuf[0] == 0x1b && namebuf_len >= 16) {
 526                 namebuf[0] = namebuf[15];
 527                 namebuf[15] = 0x1b;
 528         }
 529
 530         if (namebuf_len < 17) {
 531                 r->type = 0x00;
 532
 533                 r->name = talloc_strndup(r, (char *)namebuf, namebuf_len);
 534                 if (!r->name) return ndr_pull_error(ndr, NDR_ERR_ALLOC, "out of memory");
 535
 536                 r->scope= NULL;
 537
 538                 talloc_free(namebuf);
 539                 *_r = r;
 540                 return NDR_ERR_SUCCESS;
 541         }
 542
 543         r->type = namebuf[15];
 544
 545         namebuf[15] = '\0';
 546         trim_string((char *)namebuf, NULL, " ");
 547         r->name = talloc_strdup(r, (char *)namebuf);
 548         if (!r->name) return ndr_pull_error(ndr, NDR_ERR_ALLOC, "out of memory");
 549
 550         if (namebuf_len > 18) {
 551                 r->scope = talloc_strndup(r, (char *)(namebuf+17), namebuf_len-17);
 552                 if (!r->scope) return ndr_pull_error(ndr, NDR_ERR_ALLOC, "out of memory");
 553         } else {
 554                 r->scope = NULL;
 555         }
 556
 557         talloc_free(namebuf);
 558         *_r = r;
 559         return NDR_ERR_SUCCESS;
 560 }
 561
 562 /**
 563   push a nbt name, WINS Replication uses another on wire format for nbt name
 564 */
 565 _PUBLIC_ enum ndr_err_code ndr_push_wrepl_nbt_name(struct ndr_push *ndr, int ndr_flags, const struct nbt_name *r)
 566 {
 567         uint8_t *namebuf;
 568         uint32_t namebuf_len;
 569         uint32_t _name_len;
 570         uint32_t scope_len = 0;
 571
 572         if (r == NULL) {
 573                 return ndr_push_error(ndr, NDR_ERR_INVALID_POINTER,
 574                                       "wrepl_nbt_name NULL pointer");
 575         }
 576
 577         if (!(ndr_flags & NDR_SCALARS)) {
 578                 return NDR_ERR_SUCCESS;
 579         }
 580
 581         _name_len = strlen(r->name);
 582         if (_name_len > 15) {
 583                 return ndr_push_error(ndr, NDR_ERR_STRING,
 584                                       "wrepl_nbt_name longer as 15 chars: %s",
 585                                       r->name);
 586         }
 587
 588         if (r->scope) {
 589                 scope_len = strlen(r->scope);
 590         }
 591         if (scope_len > 238) {
 592                 return ndr_push_error(ndr, NDR_ERR_STRING,
 593                                       "wrepl_nbt_name scope longer as 238 chars: %s",
 594                                       r->scope);
 595         }
 596
 597         namebuf = (uint8_t *)talloc_asprintf(ndr, "%-15s%c%s",
 598                                              r->name, 'X',
 599                                              (r->scope?r->scope:""));
 600         if (!namebuf) return ndr_push_error(ndr, NDR_ERR_ALLOC, "out of memory");
 601
 602         namebuf_len = strlen((char *)namebuf) + 1;
 603
 604         /*
 605          * we need to set the type here, and use a place-holder in the talloc_asprintf()
 606          * as the type can be 0x00, and then the namebuf_len = strlen(namebuf); would give wrong results
 607          */
 608         namebuf[15] = r->type;
 609
 610         /* oh wow, what a nasty bug in windows ... */
 611         if (r->type == 0x1b) {
 612                 namebuf[15] = namebuf[0];
 613                 namebuf[0] = 0x1b;
 614         }
 615
 616         NDR_CHECK(ndr_push_align(ndr, 4));
 617         NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS, namebuf_len));
 618         NDR_CHECK(ndr_push_array_uint8(ndr, NDR_SCALARS, namebuf, namebuf_len));
 619
 620         talloc_free(namebuf);
 621         return NDR_ERR_SUCCESS;
 622 }
 623
 624 _PUBLIC_ void ndr_print_wrepl_nbt_name(struct ndr_print *ndr, const char *name, const struct nbt_name *r)
 625 {
 626         char *s = nbt_name_string(ndr, r);
 627         ndr_print_string(ndr, name, s);
 628         talloc_free(s);
 629 }
 630
 631 _PUBLIC_ enum ndr_err_code ndr_push_nbt_res_rec(struct ndr_push *ndr, int ndr_flags, const struct nbt_res_rec *r)
 632 {
 633         {
 634                 uint32_t _flags_save_STRUCT = ndr->flags;
 635                 ndr_set_flags(&ndr->flags, LIBNDR_PRINT_ARRAY_HEX);
 636                 if (ndr_flags & NDR_SCALARS) {
 637                         NDR_CHECK(ndr_push_align(ndr, 4));
 638                         NDR_CHECK(ndr_push_nbt_name(ndr, NDR_SCALARS, &r->name));
 639                         NDR_CHECK(ndr_push_nbt_qtype(ndr, NDR_SCALARS, r->rr_type));
 640                         NDR_CHECK(ndr_push_nbt_qclass(ndr, NDR_SCALARS, r->rr_class));
 641                         NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS, r->ttl));
 642                         NDR_CHECK(ndr_push_set_switch_value(ndr, &r->rdata, ((((r->rr_type) == NBT_QTYPE_NETBIOS) && ((r->rdata).data.length == 2))?0:r->rr_type)));
 643                         NDR_CHECK(ndr_push_nbt_rdata(ndr, NDR_SCALARS, &r->rdata));
 644                 }
 645                 if (ndr_flags & NDR_BUFFERS) {
 646                 }
 647                 ndr->flags = _flags_save_STRUCT;
 648         }
 649         return NDR_ERR_SUCCESS;
 650 }