1/* 2 Unix SMB/CIFS implementation. 3 4 libndr interface 5 6 Copyright (C) Andrew Tridgell 2003 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 this provides the core routines for NDR parsing functions 24 25 see http://www.opengroup.org/onlinepubs/9629399/chap14.htm for details 26 of NDR encoding rules 27*/ 28 29#include "includes.h" 30#include "librpc/ndr/libndr.h" 31#include "../lib/util/dlinklist.h" 32#if _SAMBA_BUILD_ == 4 33#include "param/param.h" 34#endif 35 36#define NDR_BASE_MARSHALL_SIZE 1024 37 38/* this guid indicates NDR encoding in a protocol tower */ 39const struct ndr_syntax_id ndr_transfer_syntax = { 40 { 0x8a885d04, 0x1ceb, 0x11c9, {0x9f, 0xe8}, {0x08,0x00,0x2b,0x10,0x48,0x60} }, 41 2 42}; 43 44const struct ndr_syntax_id ndr64_transfer_syntax = { 45 { 0x71710533, 0xbeba, 0x4937, {0x83, 0x19}, {0xb5,0xdb,0xef,0x9c,0xcc,0x36} }, 46 1 47}; 48 49/* 50 work out the number of bytes needed to align on a n byte boundary 51*/ 52_PUBLIC_ size_t ndr_align_size(uint32_t offset, size_t n) 53{ 54 if ((offset & (n-1)) == 0) return 0; 55 return n - (offset & (n-1)); 56} 57 58/* 59 initialise a ndr parse structure from a data blob 60*/ 61_PUBLIC_ struct ndr_pull *ndr_pull_init_blob(const DATA_BLOB *blob, TALLOC_CTX *mem_ctx, struct smb_iconv_convenience *iconv_convenience) 62{ 63 struct ndr_pull *ndr; 64 65 ndr = talloc_zero(mem_ctx, struct ndr_pull); 66 if (!ndr) return NULL; 67 ndr->current_mem_ctx = mem_ctx; 68 69 ndr->data = blob->data; 70 ndr->data_size = blob->length; 71 ndr->iconv_convenience = talloc_reference(ndr, iconv_convenience); 72 73 return ndr; 74} 75 76/* 77 advance by 'size' bytes 78*/ 79_PUBLIC_ enum ndr_err_code ndr_pull_advance(struct ndr_pull *ndr, uint32_t size) 80{ 81 ndr->offset += size; 82 if (ndr->offset > ndr->data_size) { 83 return ndr_pull_error(ndr, NDR_ERR_BUFSIZE, 84 "ndr_pull_advance by %u failed", 85 size); 86 } 87 return NDR_ERR_SUCCESS; 88} 89 90/* 91 set the parse offset to 'ofs' 92*/ 93static enum ndr_err_code ndr_pull_set_offset(struct ndr_pull *ndr, uint32_t ofs) 94{ 95 ndr->offset = ofs; 96 if (ndr->offset > ndr->data_size) { 97 return ndr_pull_error(ndr, NDR_ERR_BUFSIZE, 98 "ndr_pull_set_offset %u failed", 99 ofs); 100 } 101 return NDR_ERR_SUCCESS; 102} 103 104/* create a ndr_push structure, ready for some marshalling */ 105_PUBLIC_ struct ndr_push *ndr_push_init_ctx(TALLOC_CTX *mem_ctx, struct smb_iconv_convenience *iconv_convenience) 106{ 107 struct ndr_push *ndr; 108 109 ndr = talloc_zero(mem_ctx, struct ndr_push); 110 if (!ndr) { 111 return NULL; 112 } 113 114 ndr->flags = 0; 115 ndr->alloc_size = NDR_BASE_MARSHALL_SIZE; 116 ndr->data = talloc_array(ndr, uint8_t, ndr->alloc_size); 117 if (!ndr->data) { 118 return NULL; 119 } 120 ndr->iconv_convenience = talloc_reference(ndr, iconv_convenience); 121 122 return ndr; 123} 124 125/* return a DATA_BLOB structure for the current ndr_push marshalled data */ 126_PUBLIC_ DATA_BLOB ndr_push_blob(struct ndr_push *ndr) 127{ 128 DATA_BLOB blob; 129 blob = data_blob_const(ndr->data, ndr->offset); 130 if (ndr->alloc_size > ndr->offset) { 131 ndr->data[ndr->offset] = 0; 132 } 133 return blob; 134} 135 136 137/* 138 expand the available space in the buffer to ndr->offset + extra_size 139*/ 140_PUBLIC_ enum ndr_err_code ndr_push_expand(struct ndr_push *ndr, uint32_t extra_size) 141{ 142 uint32_t size = extra_size + ndr->offset; 143 144 if (size < ndr->offset) { 145 /* extra_size overflowed the offset */ 146 return ndr_push_error(ndr, NDR_ERR_BUFSIZE, "Overflow in push_expand to %u", 147 size); 148 } 149 150 if (ndr->alloc_size > size) { 151 return NDR_ERR_SUCCESS; 152 } 153 154 ndr->alloc_size += NDR_BASE_MARSHALL_SIZE; 155 if (size+1 > ndr->alloc_size) { 156 ndr->alloc_size = size+1; 157 } 158 ndr->data = talloc_realloc(ndr, ndr->data, uint8_t, ndr->alloc_size); 159 if (!ndr->data) { 160 return ndr_push_error(ndr, NDR_ERR_ALLOC, "Failed to push_expand to %u", 161 ndr->alloc_size); 162 } 163 164 return NDR_ERR_SUCCESS; 165} 166 167_PUBLIC_ void ndr_print_debug_helper(struct ndr_print *ndr, const char *format, ...) 168{ 169 va_list ap; 170 char *s = NULL; 171 int i, ret; 172 173 va_start(ap, format); 174 ret = vasprintf(&s, format, ap); 175 va_end(ap); 176 177 if (ret == -1) { 178 return; 179 } 180 181 for (i=0;i<ndr->depth;i++) { 182 DEBUGADD(1,(" ")); 183 } 184 185 DEBUGADD(1,("%s\n", s)); 186 free(s); 187} 188 189_PUBLIC_ void ndr_print_string_helper(struct ndr_print *ndr, const char *format, ...) 190{ 191 va_list ap; 192 int i; 193 194 for (i=0;i<ndr->depth;i++) { 195 ndr->private_data = talloc_asprintf_append_buffer( 196 (char *)ndr->private_data, " "); 197 } 198 199 va_start(ap, format); 200 ndr->private_data = talloc_vasprintf_append_buffer((char *)ndr->private_data, 201 format, ap); 202 va_end(ap); 203 ndr->private_data = talloc_asprintf_append_buffer((char *)ndr->private_data, 204 "\n"); 205} 206 207/* 208 a useful helper function for printing idl structures via DEBUG() 209*/ 210_PUBLIC_ void ndr_print_debug(ndr_print_fn_t fn, const char *name, void *ptr) 211{ 212 struct ndr_print *ndr; 213 214 DEBUG(1,(" ")); 215 216 ndr = talloc_zero(NULL, struct ndr_print); 217 if (!ndr) return; 218 ndr->print = ndr_print_debug_helper; 219 ndr->depth = 1; 220 ndr->flags = 0; 221 fn(ndr, name, ptr); 222 talloc_free(ndr); 223} 224 225/* 226 a useful helper function for printing idl unions via DEBUG() 227*/ 228_PUBLIC_ void ndr_print_union_debug(ndr_print_fn_t fn, const char *name, uint32_t level, void *ptr) 229{ 230 struct ndr_print *ndr; 231 232 DEBUG(1,(" ")); 233 234 ndr = talloc_zero(NULL, struct ndr_print); 235 if (!ndr) return; 236 ndr->print = ndr_print_debug_helper; 237 ndr->depth = 1; 238 ndr->flags = 0; 239 ndr_print_set_switch_value(ndr, ptr, level); 240 fn(ndr, name, ptr); 241 talloc_free(ndr); 242} 243 244/* 245 a useful helper function for printing idl function calls via DEBUG() 246*/ 247_PUBLIC_ void ndr_print_function_debug(ndr_print_function_t fn, const char *name, int flags, void *ptr) 248{ 249 struct ndr_print *ndr; 250 251 DEBUG(1,(" ")); 252 253 ndr = talloc_zero(NULL, struct ndr_print); 254 if (!ndr) return; 255 ndr->print = ndr_print_debug_helper; 256 ndr->depth = 1; 257 ndr->flags = 0; 258 259 /* this is a s4 hack until we build up the courage to pass 260 * this all the way down 261 */ 262#if _SAMBA_BUILD_ == 4 263 ndr->iconv_convenience = smb_iconv_convenience_init(talloc_autofree_context(), "ASCII", "UTF-8", true); 264#endif 265 266 fn(ndr, name, flags, ptr); 267 talloc_free(ndr); 268} 269 270/* 271 a useful helper function for printing idl structures to a string 272*/ 273_PUBLIC_ char *ndr_print_struct_string(TALLOC_CTX *mem_ctx, ndr_print_fn_t fn, const char *name, void *ptr) 274{ 275 struct ndr_print *ndr; 276 char *ret = NULL; 277 278 ndr = talloc_zero(mem_ctx, struct ndr_print); 279 if (!ndr) return NULL; 280 ndr->private_data = talloc_strdup(ndr, ""); 281 if (!ndr->private_data) { 282 goto failed; 283 } 284 ndr->print = ndr_print_string_helper; 285 ndr->depth = 1; 286 ndr->flags = 0; 287 288 /* this is a s4 hack until we build up the courage to pass 289 * this all the way down 290 */ 291#if _SAMBA_BUILD_ == 4 292 ndr->iconv_convenience = smb_iconv_convenience_init(talloc_autofree_context(), "ASCII", "UTF-8", true); 293#endif 294 295 fn(ndr, name, ptr); 296 ret = talloc_steal(mem_ctx, (char *)ndr->private_data); 297failed: 298 talloc_free(ndr); 299 return ret; 300} 301 302/* 303 a useful helper function for printing idl unions to a string 304*/ 305_PUBLIC_ char *ndr_print_union_string(TALLOC_CTX *mem_ctx, ndr_print_fn_t fn, const char *name, uint32_t level, void *ptr) 306{ 307 struct ndr_print *ndr; 308 char *ret = NULL; 309 310 ndr = talloc_zero(mem_ctx, struct ndr_print); 311 if (!ndr) return NULL; 312 ndr->private_data = talloc_strdup(ndr, ""); 313 if (!ndr->private_data) { 314 goto failed; 315 } 316 ndr->print = ndr_print_string_helper; 317 ndr->depth = 1; 318 ndr->flags = 0; 319 ndr_print_set_switch_value(ndr, ptr, level); 320 fn(ndr, name, ptr); 321 ret = talloc_steal(mem_ctx, (char *)ndr->private_data); 322failed: 323 talloc_free(ndr); 324 return ret; 325} 326 327/* 328 a useful helper function for printing idl function calls to a string 329*/ 330_PUBLIC_ char *ndr_print_function_string(TALLOC_CTX *mem_ctx, 331 ndr_print_function_t fn, const char *name, 332 int flags, void *ptr) 333{ 334 struct ndr_print *ndr; 335 char *ret = NULL; 336 337 ndr = talloc_zero(mem_ctx, struct ndr_print); 338 if (!ndr) return NULL; 339 ndr->private_data = talloc_strdup(ndr, ""); 340 if (!ndr->private_data) { 341 goto failed; 342 } 343 ndr->print = ndr_print_string_helper; 344 ndr->depth = 1; 345 ndr->flags = 0; 346 fn(ndr, name, flags, ptr); 347 ret = talloc_steal(mem_ctx, (char *)ndr->private_data); 348failed: 349 talloc_free(ndr); 350 return ret; 351} 352 353_PUBLIC_ void ndr_set_flags(uint32_t *pflags, uint32_t new_flags) 354{ 355 /* the big/little endian flags are inter-dependent */ 356 if (new_flags & LIBNDR_FLAG_LITTLE_ENDIAN) { 357 (*pflags) &= ~LIBNDR_FLAG_BIGENDIAN; 358 (*pflags) &= ~LIBNDR_FLAG_NDR64; 359 } 360 if (new_flags & LIBNDR_FLAG_BIGENDIAN) { 361 (*pflags) &= ~LIBNDR_FLAG_LITTLE_ENDIAN; 362 (*pflags) &= ~LIBNDR_FLAG_NDR64; 363 } 364 if (new_flags & LIBNDR_FLAG_REMAINING) { 365 (*pflags) &= ~LIBNDR_ALIGN_FLAGS; 366 } 367 if (new_flags & LIBNDR_ALIGN_FLAGS) { 368 (*pflags) &= ~LIBNDR_FLAG_REMAINING; 369 } 370 if (new_flags & LIBNDR_FLAG_NO_RELATIVE_REVERSE) { 371 (*pflags) &= ~LIBNDR_FLAG_RELATIVE_REVERSE; 372 } 373 (*pflags) |= new_flags; 374} 375 376/* 377 return and possibly log an NDR error 378*/ 379_PUBLIC_ enum ndr_err_code ndr_pull_error(struct ndr_pull *ndr, 380 enum ndr_err_code ndr_err, 381 const char *format, ...) 382{ 383 char *s=NULL; 384 va_list ap; 385 int ret; 386 387 va_start(ap, format); 388 ret = vasprintf(&s, format, ap); 389 va_end(ap); 390 391 if (ret == -1) { 392 return NDR_ERR_ALLOC; 393 } 394 395 DEBUG(1,("ndr_pull_error(%u): %s\n", ndr_err, s)); 396 397 free(s); 398 399 return ndr_err; 400} 401 402/* 403 return and possibly log an NDR error 404*/ 405_PUBLIC_ enum ndr_err_code ndr_push_error(struct ndr_push *ndr, 406 enum ndr_err_code ndr_err, 407 const char *format, ...) 408{ 409 char *s=NULL; 410 va_list ap; 411 int ret; 412 413 va_start(ap, format); 414 ret = vasprintf(&s, format, ap); 415 va_end(ap); 416 417 if (ret == -1) { 418 return NDR_ERR_ALLOC; 419 } 420 421 DEBUG(1,("ndr_push_error(%u): %s\n", ndr_err, s)); 422 423 free(s); 424 425 return ndr_err; 426} 427 428/* 429 handle subcontext buffers, which in midl land are user-marshalled, but 430 we use magic in pidl to make them easier to cope with 431*/ 432_PUBLIC_ enum ndr_err_code ndr_pull_subcontext_start(struct ndr_pull *ndr, 433 struct ndr_pull **_subndr, 434 size_t header_size, 435 ssize_t size_is) 436{ 437 struct ndr_pull *subndr; 438 uint32_t r_content_size; 439 bool force_le = false; 440 bool force_be = false; 441 442 switch (header_size) { 443 case 0: { 444 uint32_t content_size = ndr->data_size - ndr->offset; 445 if (size_is >= 0) { 446 content_size = size_is; 447 } 448 r_content_size = content_size; 449 break; 450 } 451 452 case 2: { 453 uint16_t content_size; 454 NDR_CHECK(ndr_pull_uint16(ndr, NDR_SCALARS, &content_size)); 455 if (size_is >= 0 && size_is != content_size) { 456 return ndr_pull_error(ndr, NDR_ERR_SUBCONTEXT, "Bad subcontext (PULL) size_is(%d) mismatch content_size %d", 457 (int)size_is, (int)content_size); 458 } 459 r_content_size = content_size; 460 break; 461 } 462 463 case 4: { 464 uint32_t content_size; 465 NDR_CHECK(ndr_pull_uint3264(ndr, NDR_SCALARS, &content_size)); 466 if (size_is >= 0 && size_is != content_size) { 467 return ndr_pull_error(ndr, NDR_ERR_SUBCONTEXT, "Bad subcontext (PULL) size_is(%d) mismatch content_size %d", 468 (int)size_is, (int)content_size); 469 } 470 r_content_size = content_size; 471 break; 472 } 473 case 0xFFFFFC01: { 474 /* 475 * Common Type Header for the Serialization Stream 476 * See [MS-RPCE] 2.2.6 Type Serialization Version 1 477 */ 478 uint8_t version; 479 uint8_t drep; 480 uint16_t hdrlen; 481 uint32_t filler; 482 uint32_t content_size; 483 uint32_t reserved; 484 485 /* version */ 486 NDR_CHECK(ndr_pull_uint8(ndr, NDR_SCALARS, &version)); 487 488 if (version != 1) { 489 return ndr_pull_error(ndr, NDR_ERR_SUBCONTEXT, 490 "Bad subcontext (PULL) Common Type Header version %d != 1", 491 (int)version); 492 } 493 494 /* 495 * 0x10 little endian 496 * 0x00 big endian 497 */ 498 NDR_CHECK(ndr_pull_uint8(ndr, NDR_SCALARS, &drep)); 499 if (drep == 0x10) { 500 force_le = true; 501 } else if (drep == 0x00) { 502 force_be = true; 503 } else { 504 return ndr_pull_error(ndr, NDR_ERR_SUBCONTEXT, 505 "Bad subcontext (PULL) Common Type Header invalid drep 0x%02X", 506 (unsigned int)drep); 507 } 508 509 /* length of the "Private Header for Constructed Type" */ 510 NDR_CHECK(ndr_pull_uint16(ndr, NDR_SCALARS, &hdrlen)); 511 if (hdrlen != 8) { 512 return ndr_pull_error(ndr, NDR_ERR_SUBCONTEXT, 513 "Bad subcontext (PULL) Common Type Header length %d != 8", 514 (int)hdrlen); 515 } 516 517 /* filler should be ignored */ 518 NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &filler)); 519 520 /* 521 * Private Header for Constructed Type 522 */ 523 /* length - will be updated latter */ 524 NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &content_size)); 525 if (size_is >= 0 && size_is != content_size) { 526 return ndr_pull_error(ndr, NDR_ERR_SUBCONTEXT, "Bad subcontext (PULL) size_is(%d) mismatch content_size %d", 527 (int)size_is, (int)content_size); 528 } 529 /* the content size must be a multiple of 8 */ 530 if ((content_size % 8) != 0) { 531 return ndr_pull_error(ndr, NDR_ERR_SUBCONTEXT, 532 "Bad subcontext (PULL) size_is(%d) not padded to 8 content_size %d", 533 (int)size_is, (int)content_size); 534 } 535 r_content_size = content_size; 536 537 /* reserved */ 538 NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &reserved)); 539 break; 540 } 541 default: 542 return ndr_pull_error(ndr, NDR_ERR_SUBCONTEXT, "Bad subcontext (PULL) header_size %d", 543 (int)header_size); 544 } 545 546 NDR_PULL_NEED_BYTES(ndr, r_content_size); 547 548 subndr = talloc_zero(ndr, struct ndr_pull); 549 NDR_ERR_HAVE_NO_MEMORY(subndr); 550 subndr->flags = ndr->flags & ~LIBNDR_FLAG_NDR64; 551 subndr->current_mem_ctx = ndr->current_mem_ctx; 552 553 subndr->data = ndr->data + ndr->offset; 554 subndr->offset = 0; 555 subndr->data_size = r_content_size; 556 subndr->iconv_convenience = talloc_reference(subndr, ndr->iconv_convenience); 557 558 if (force_le) { 559 ndr_set_flags(&ndr->flags, LIBNDR_FLAG_LITTLE_ENDIAN); 560 } else if (force_be) { 561 ndr_set_flags(&ndr->flags, LIBNDR_FLAG_BIGENDIAN); 562 } 563 564 *_subndr = subndr; 565 return NDR_ERR_SUCCESS; 566} 567 568_PUBLIC_ enum ndr_err_code ndr_pull_subcontext_end(struct ndr_pull *ndr, 569 struct ndr_pull *subndr, 570 size_t header_size, 571 ssize_t size_is) 572{ 573 uint32_t advance; 574 if (size_is >= 0) { 575 advance = size_is; 576 } else if (header_size > 0) { 577 advance = subndr->data_size; 578 } else { 579 advance = subndr->offset; 580 } 581 NDR_CHECK(ndr_pull_advance(ndr, advance)); 582 return NDR_ERR_SUCCESS; 583} 584 585_PUBLIC_ enum ndr_err_code ndr_push_subcontext_start(struct ndr_push *ndr, 586 struct ndr_push **_subndr, 587 size_t header_size, 588 ssize_t size_is) 589{ 590 struct ndr_push *subndr; 591 592 subndr = ndr_push_init_ctx(ndr, ndr->iconv_convenience); 593 NDR_ERR_HAVE_NO_MEMORY(subndr); 594 subndr->flags = ndr->flags & ~LIBNDR_FLAG_NDR64; 595 596 if (size_is > 0) { 597 NDR_CHECK(ndr_push_zero(subndr, size_is)); 598 subndr->offset = 0; 599 subndr->relative_end_offset = size_is; 600 } 601 602 *_subndr = subndr; 603 return NDR_ERR_SUCCESS; 604} 605 606/* 607 push a subcontext header 608*/ 609_PUBLIC_ enum ndr_err_code ndr_push_subcontext_end(struct ndr_push *ndr, 610 struct ndr_push *subndr, 611 size_t header_size, 612 ssize_t size_is) 613{ 614 ssize_t padding_len; 615 616 if (size_is >= 0) { 617 padding_len = size_is - subndr->offset; 618 if (padding_len < 0) { 619 return ndr_push_error(ndr, NDR_ERR_SUBCONTEXT, "Bad subcontext (PUSH) content_size %d is larger than size_is(%d)", 620 (int)subndr->offset, (int)size_is); 621 } 622 subndr->offset = size_is; 623 } 624 625 switch (header_size) { 626 case 0: 627 break; 628 629 case 2: 630 NDR_CHECK(ndr_push_uint16(ndr, NDR_SCALARS, subndr->offset)); 631 break; 632 633 case 4: 634 NDR_CHECK(ndr_push_uint3264(ndr, NDR_SCALARS, subndr->offset)); 635 break; 636 637 case 0xFFFFFC01: 638 /* 639 * Common Type Header for the Serialization Stream 640 * See [MS-RPCE] 2.2.6 Type Serialization Version 1 641 */ 642 padding_len = NDR_ROUND(subndr->offset, 8) - subndr->offset; 643 if (padding_len > 0) { 644 NDR_CHECK(ndr_push_zero(subndr, padding_len)); 645 } 646 647 /* version */ 648 NDR_CHECK(ndr_push_uint8(ndr, NDR_SCALARS, 1)); 649 650 /* 651 * 0x10 little endian 652 * 0x00 big endian 653 */ 654 NDR_CHECK(ndr_push_uint8(ndr, NDR_SCALARS, NDR_BE(ndr)?0x00:0x10)); 655 656 /* length of the "Private Header for Constructed Type" */ 657 NDR_CHECK(ndr_push_uint16(ndr, NDR_SCALARS, 8)); 658 659 /* filler */ 660 NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS, 0xCCCCCCCC)); 661 662 /* 663 * Private Header for Constructed Type 664 */ 665 /* length - will be updated latter */ 666 NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS, subndr->offset)); 667 668 /* reserved */ 669 NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS, 0)); 670 break; 671 672 default: 673 return ndr_push_error(ndr, NDR_ERR_SUBCONTEXT, "Bad subcontext header size %d", 674 (int)header_size); 675 } 676 677 NDR_CHECK(ndr_push_bytes(ndr, subndr->data, subndr->offset)); 678 return NDR_ERR_SUCCESS; 679} 680 681/* 682 store a token in the ndr context, for later retrieval 683*/ 684_PUBLIC_ enum ndr_err_code ndr_token_store(TALLOC_CTX *mem_ctx, 685 struct ndr_token_list **list, 686 const void *key, 687 uint32_t value) 688{ 689 struct ndr_token_list *tok; 690 tok = talloc(mem_ctx, struct ndr_token_list); 691 NDR_ERR_HAVE_NO_MEMORY(tok); 692 tok->key = key; 693 tok->value = value; 694 DLIST_ADD((*list), tok); 695 return NDR_ERR_SUCCESS; 696} 697 698/* 699 retrieve a token from a ndr context, using cmp_fn to match the tokens 700*/ 701_PUBLIC_ enum ndr_err_code ndr_token_retrieve_cmp_fn(struct ndr_token_list **list, const void *key, uint32_t *v, 702 comparison_fn_t _cmp_fn, bool _remove_tok) 703{ 704 struct ndr_token_list *tok; 705 for (tok=*list;tok;tok=tok->next) { 706 if (_cmp_fn && _cmp_fn(tok->key,key)==0) goto found; 707 else if (!_cmp_fn && tok->key == key) goto found; 708 } 709 return NDR_ERR_TOKEN; 710found: 711 *v = tok->value; 712 if (_remove_tok) { 713 DLIST_REMOVE((*list), tok); 714 talloc_free(tok); 715 } 716 return NDR_ERR_SUCCESS; 717} 718 719/* 720 retrieve a token from a ndr context 721*/ 722_PUBLIC_ enum ndr_err_code ndr_token_retrieve(struct ndr_token_list **list, const void *key, uint32_t *v) 723{ 724 return ndr_token_retrieve_cmp_fn(list, key, v, NULL, true); 725} 726 727/* 728 peek at but don't removed a token from a ndr context 729*/ 730_PUBLIC_ uint32_t ndr_token_peek(struct ndr_token_list **list, const void *key) 731{ 732 enum ndr_err_code status; 733 uint32_t v; 734 735 status = ndr_token_retrieve_cmp_fn(list, key, &v, NULL, false); 736 if (!NDR_ERR_CODE_IS_SUCCESS(status)) { 737 return 0; 738 } 739 740 return v; 741} 742 743/* 744 pull an array size field and add it to the array_size_list token list 745*/ 746_PUBLIC_ enum ndr_err_code ndr_pull_array_size(struct ndr_pull *ndr, const void *p) 747{ 748 uint32_t size; 749 NDR_CHECK(ndr_pull_uint3264(ndr, NDR_SCALARS, &size)); 750 return ndr_token_store(ndr, &ndr->array_size_list, p, size); 751} 752 753/* 754 get the stored array size field 755*/ 756_PUBLIC_ uint32_t ndr_get_array_size(struct ndr_pull *ndr, const void *p) 757{ 758 return ndr_token_peek(&ndr->array_size_list, p); 759} 760 761/* 762 check the stored array size field 763*/ 764_PUBLIC_ enum ndr_err_code ndr_check_array_size(struct ndr_pull *ndr, void *p, uint32_t size) 765{ 766 uint32_t stored; 767 stored = ndr_token_peek(&ndr->array_size_list, p); 768 if (stored != size) { 769 return ndr_pull_error(ndr, NDR_ERR_ARRAY_SIZE, 770 "Bad array size - got %u expected %u\n", 771 stored, size); 772 } 773 return NDR_ERR_SUCCESS; 774} 775 776/* 777 pull an array length field and add it to the array_length_list token list 778*/ 779_PUBLIC_ enum ndr_err_code ndr_pull_array_length(struct ndr_pull *ndr, const void *p) 780{ 781 uint32_t length, offset; 782 NDR_CHECK(ndr_pull_uint3264(ndr, NDR_SCALARS, &offset)); 783 if (offset != 0) { 784 return ndr_pull_error(ndr, NDR_ERR_ARRAY_SIZE, 785 "non-zero array offset %u\n", offset); 786 } 787 NDR_CHECK(ndr_pull_uint3264(ndr, NDR_SCALARS, &length)); 788 return ndr_token_store(ndr, &ndr->array_length_list, p, length); 789} 790 791/* 792 get the stored array length field 793*/ 794_PUBLIC_ uint32_t ndr_get_array_length(struct ndr_pull *ndr, const void *p) 795{ 796 return ndr_token_peek(&ndr->array_length_list, p); 797} 798 799/* 800 check the stored array length field 801*/ 802_PUBLIC_ enum ndr_err_code ndr_check_array_length(struct ndr_pull *ndr, void *p, uint32_t length) 803{ 804 uint32_t stored; 805 stored = ndr_token_peek(&ndr->array_length_list, p); 806 if (stored != length) { 807 return ndr_pull_error(ndr, NDR_ERR_ARRAY_SIZE, 808 "Bad array length - got %u expected %u\n", 809 stored, length); 810 } 811 return NDR_ERR_SUCCESS; 812} 813 814/* 815 store a switch value 816 */ 817_PUBLIC_ enum ndr_err_code ndr_push_set_switch_value(struct ndr_push *ndr, const void *p, uint32_t val) 818{ 819 return ndr_token_store(ndr, &ndr->switch_list, p, val); 820} 821 822_PUBLIC_ enum ndr_err_code ndr_pull_set_switch_value(struct ndr_pull *ndr, const void *p, uint32_t val) 823{ 824 return ndr_token_store(ndr, &ndr->switch_list, p, val); 825} 826 827_PUBLIC_ enum ndr_err_code ndr_print_set_switch_value(struct ndr_print *ndr, const void *p, uint32_t val) 828{ 829 return ndr_token_store(ndr, &ndr->switch_list, p, val); 830} 831 832/* 833 retrieve a switch value 834 */ 835_PUBLIC_ uint32_t ndr_push_get_switch_value(struct ndr_push *ndr, const void *p) 836{ 837 return ndr_token_peek(&ndr->switch_list, p); 838} 839 840_PUBLIC_ uint32_t ndr_pull_get_switch_value(struct ndr_pull *ndr, const void *p) 841{ 842 return ndr_token_peek(&ndr->switch_list, p); 843} 844 845_PUBLIC_ uint32_t ndr_print_get_switch_value(struct ndr_print *ndr, const void *p) 846{ 847 return ndr_token_peek(&ndr->switch_list, p); 848} 849 850/* 851 pull a struct from a blob using NDR 852*/ 853_PUBLIC_ enum ndr_err_code ndr_pull_struct_blob(const DATA_BLOB *blob, TALLOC_CTX *mem_ctx, struct smb_iconv_convenience *iconv_convenience, void *p, 854 ndr_pull_flags_fn_t fn) 855{ 856 struct ndr_pull *ndr; 857 ndr = ndr_pull_init_blob(blob, mem_ctx, iconv_convenience); 858 NDR_ERR_HAVE_NO_MEMORY(ndr); 859 NDR_CHECK_FREE(fn(ndr, NDR_SCALARS|NDR_BUFFERS, p)); 860 talloc_free(ndr); 861 return NDR_ERR_SUCCESS; 862} 863 864/* 865 pull a struct from a blob using NDR - failing if all bytes are not consumed 866*/ 867_PUBLIC_ enum ndr_err_code ndr_pull_struct_blob_all(const DATA_BLOB *blob, TALLOC_CTX *mem_ctx, 868 struct smb_iconv_convenience *iconv_convenience, 869 void *p, ndr_pull_flags_fn_t fn) 870{ 871 struct ndr_pull *ndr; 872 ndr = ndr_pull_init_blob(blob, mem_ctx, iconv_convenience); 873 NDR_ERR_HAVE_NO_MEMORY(ndr); 874 NDR_CHECK_FREE(fn(ndr, NDR_SCALARS|NDR_BUFFERS, p)); 875 if (ndr->offset < ndr->data_size) { 876 return ndr_pull_error(ndr, NDR_ERR_UNREAD_BYTES, 877 "not all bytes consumed ofs[%u] size[%u]", 878 ndr->offset, ndr->data_size); 879 } 880 talloc_free(ndr); 881 return NDR_ERR_SUCCESS; 882} 883 884/* 885 pull a union from a blob using NDR, given the union discriminator 886*/ 887_PUBLIC_ enum ndr_err_code ndr_pull_union_blob(const DATA_BLOB *blob, TALLOC_CTX *mem_ctx, 888 struct smb_iconv_convenience *iconv_convenience, void *p, 889 uint32_t level, ndr_pull_flags_fn_t fn) 890{ 891 struct ndr_pull *ndr; 892 ndr = ndr_pull_init_blob(blob, mem_ctx, iconv_convenience); 893 NDR_ERR_HAVE_NO_MEMORY(ndr); 894 NDR_CHECK_FREE(ndr_pull_set_switch_value(ndr, p, level)); 895 NDR_CHECK_FREE(fn(ndr, NDR_SCALARS|NDR_BUFFERS, p)); 896 talloc_free(ndr); 897 return NDR_ERR_SUCCESS; 898} 899 900/* 901 pull a union from a blob using NDR, given the union discriminator, 902 failing if all bytes are not consumed 903*/ 904_PUBLIC_ enum ndr_err_code ndr_pull_union_blob_all(const DATA_BLOB *blob, TALLOC_CTX *mem_ctx, 905 struct smb_iconv_convenience *iconv_convenience, void *p, 906 uint32_t level, ndr_pull_flags_fn_t fn) 907{ 908 struct ndr_pull *ndr; 909 ndr = ndr_pull_init_blob(blob, mem_ctx, iconv_convenience); 910 NDR_ERR_HAVE_NO_MEMORY(ndr); 911 NDR_CHECK_FREE(ndr_pull_set_switch_value(ndr, p, level)); 912 NDR_CHECK_FREE(fn(ndr, NDR_SCALARS|NDR_BUFFERS, p)); 913 if (ndr->offset < ndr->data_size) { 914 enum ndr_err_code ret; 915 ret = ndr_pull_error(ndr, NDR_ERR_UNREAD_BYTES, 916 "not all bytes consumed ofs[%u] size[%u]", 917 ndr->offset, ndr->data_size); 918 talloc_free(ndr); 919 return ret; 920 } 921 talloc_free(ndr); 922 return NDR_ERR_SUCCESS; 923} 924 925/* 926 push a struct to a blob using NDR 927*/ 928_PUBLIC_ enum ndr_err_code ndr_push_struct_blob(DATA_BLOB *blob, TALLOC_CTX *mem_ctx, struct smb_iconv_convenience *iconv_convenience, const void *p, ndr_push_flags_fn_t fn) 929{ 930 struct ndr_push *ndr; 931 ndr = ndr_push_init_ctx(mem_ctx, iconv_convenience); 932 NDR_ERR_HAVE_NO_MEMORY(ndr); 933 934 NDR_CHECK(fn(ndr, NDR_SCALARS|NDR_BUFFERS, p)); 935 936 *blob = ndr_push_blob(ndr); 937 talloc_steal(mem_ctx, blob->data); 938 talloc_free(ndr); 939 940 return NDR_ERR_SUCCESS; 941} 942 943/* 944 push a union to a blob using NDR 945*/ 946_PUBLIC_ enum ndr_err_code ndr_push_union_blob(DATA_BLOB *blob, TALLOC_CTX *mem_ctx, struct smb_iconv_convenience *iconv_convenience, void *p, 947 uint32_t level, ndr_push_flags_fn_t fn) 948{ 949 struct ndr_push *ndr; 950 ndr = ndr_push_init_ctx(mem_ctx, iconv_convenience); 951 NDR_ERR_HAVE_NO_MEMORY(ndr); 952 953 NDR_CHECK(ndr_push_set_switch_value(ndr, p, level)); 954 NDR_CHECK(fn(ndr, NDR_SCALARS|NDR_BUFFERS, p)); 955 956 *blob = ndr_push_blob(ndr); 957 talloc_steal(mem_ctx, blob->data); 958 talloc_free(ndr); 959 960 return NDR_ERR_SUCCESS; 961} 962 963/* 964 generic ndr_size_*() handler for structures 965*/ 966_PUBLIC_ size_t ndr_size_struct(const void *p, int flags, ndr_push_flags_fn_t push, struct smb_iconv_convenience *iconv_convenience) 967{ 968 struct ndr_push *ndr; 969 enum ndr_err_code status; 970 size_t ret; 971 972 /* avoid recursion */ 973 if (flags & LIBNDR_FLAG_NO_NDR_SIZE) return 0; 974 975 ndr = ndr_push_init_ctx(NULL, iconv_convenience); 976 if (!ndr) return 0; 977 ndr->flags |= flags | LIBNDR_FLAG_NO_NDR_SIZE; 978 status = push(ndr, NDR_SCALARS|NDR_BUFFERS, discard_const(p)); 979 if (!NDR_ERR_CODE_IS_SUCCESS(status)) { 980 talloc_free(ndr); 981 return 0; 982 } 983 ret = ndr->offset; 984 talloc_free(ndr); 985 return ret; 986} 987 988/* 989 generic ndr_size_*() handler for unions 990*/ 991_PUBLIC_ size_t ndr_size_union(const void *p, int flags, uint32_t level, ndr_push_flags_fn_t push, struct smb_iconv_convenience *iconv_convenience) 992{ 993 struct ndr_push *ndr; 994 enum ndr_err_code status; 995 size_t ret; 996 997 /* avoid recursion */ 998 if (flags & LIBNDR_FLAG_NO_NDR_SIZE) return 0; 999 1000 ndr = ndr_push_init_ctx(NULL, iconv_convenience); 1001 if (!ndr) return 0; 1002 ndr->flags |= flags | LIBNDR_FLAG_NO_NDR_SIZE; 1003 1004 status = ndr_push_set_switch_value(ndr, p, level); 1005 if (!NDR_ERR_CODE_IS_SUCCESS(status)) { 1006 talloc_free(ndr); 1007 return 0; 1008 } 1009 status = push(ndr, NDR_SCALARS|NDR_BUFFERS, p); 1010 if (!NDR_ERR_CODE_IS_SUCCESS(status)) { 1011 talloc_free(ndr); 1012 return 0; 1013 } 1014 ret = ndr->offset; 1015 talloc_free(ndr); 1016 return ret; 1017} 1018 1019/* 1020 get the current base for relative pointers for the push 1021*/ 1022_PUBLIC_ uint32_t ndr_push_get_relative_base_offset(struct ndr_push *ndr) 1023{ 1024 return ndr->relative_base_offset; 1025} 1026 1027/* 1028 restore the old base for relative pointers for the push 1029*/ 1030_PUBLIC_ void ndr_push_restore_relative_base_offset(struct ndr_push *ndr, uint32_t offset) 1031{ 1032 ndr->relative_base_offset = offset; 1033} 1034 1035/* 1036 setup the current base for relative pointers for the push 1037 called in the NDR_SCALAR stage 1038*/ 1039_PUBLIC_ enum ndr_err_code ndr_push_setup_relative_base_offset1(struct ndr_push *ndr, const void *p, uint32_t offset) 1040{ 1041 ndr->relative_base_offset = offset; 1042 return ndr_token_store(ndr, &ndr->relative_base_list, p, offset); 1043} 1044 1045/* 1046 setup the current base for relative pointers for the push 1047 called in the NDR_BUFFERS stage 1048*/ 1049_PUBLIC_ enum ndr_err_code ndr_push_setup_relative_base_offset2(struct ndr_push *ndr, const void *p) 1050{ 1051 return ndr_token_retrieve(&ndr->relative_base_list, p, &ndr->relative_base_offset); 1052} 1053 1054/* 1055 push a relative object - stage1 1056 this is called during SCALARS processing 1057*/ 1058_PUBLIC_ enum ndr_err_code ndr_push_relative_ptr1(struct ndr_push *ndr, const void *p) 1059{ 1060 if (p == NULL) { 1061 NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS, 0)); 1062 return NDR_ERR_SUCCESS; 1063 } 1064 NDR_CHECK(ndr_push_align(ndr, 4)); 1065 NDR_CHECK(ndr_token_store(ndr, &ndr->relative_list, p, ndr->offset)); 1066 return ndr_push_uint32(ndr, NDR_SCALARS, 0xFFFFFFFF); 1067} 1068 1069/* 1070 push a relative object - stage2 1071 this is called during buffers processing 1072*/ 1073static enum ndr_err_code ndr_push_relative_ptr2(struct ndr_push *ndr, const void *p) 1074{ 1075 uint32_t save_offset; 1076 uint32_t ptr_offset = 0xFFFFFFFF; 1077 if (p == NULL) { 1078 return NDR_ERR_SUCCESS; 1079 } 1080 save_offset = ndr->offset; 1081 NDR_CHECK(ndr_token_retrieve(&ndr->relative_list, p, &ptr_offset)); 1082 if (ptr_offset > ndr->offset) { 1083 return ndr_push_error(ndr, NDR_ERR_BUFSIZE, 1084 "ndr_push_relative_ptr2 ptr_offset(%u) > ndr->offset(%u)", 1085 ptr_offset, ndr->offset); 1086 } 1087 ndr->offset = ptr_offset; 1088 if (save_offset < ndr->relative_base_offset) { 1089 return ndr_push_error(ndr, NDR_ERR_BUFSIZE, 1090 "ndr_push_relative_ptr2 save_offset(%u) < ndr->relative_base_offset(%u)", 1091 save_offset, ndr->relative_base_offset); 1092 } 1093 NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS, save_offset - ndr->relative_base_offset)); 1094 ndr->offset = save_offset; 1095 return NDR_ERR_SUCCESS; 1096} 1097 1098/* 1099 push a relative object - stage2 start 1100 this is called during buffers processing 1101*/ 1102_PUBLIC_ enum ndr_err_code ndr_push_relative_ptr2_start(struct ndr_push *ndr, const void *p) 1103{ 1104 if (p == NULL) { 1105 return NDR_ERR_SUCCESS; 1106 } 1107 if (!(ndr->flags & LIBNDR_FLAG_RELATIVE_REVERSE)) { 1108 uint32_t relative_offset; 1109 size_t pad; 1110 size_t align = 1; 1111 1112 if (ndr->offset < ndr->relative_base_offset) { 1113 return ndr_push_error(ndr, NDR_ERR_BUFSIZE, 1114 "ndr_push_relative_ptr2_start ndr->offset(%u) < ndr->relative_base_offset(%u)", 1115 ndr->offset, ndr->relative_base_offset); 1116 } 1117 1118 relative_offset = ndr->offset - ndr->relative_base_offset; 1119 1120 if (ndr->flags & LIBNDR_FLAG_NOALIGN) { 1121 align = 1; 1122 } else if (ndr->flags & LIBNDR_FLAG_ALIGN2) { 1123 align = 2; 1124 } else if (ndr->flags & LIBNDR_FLAG_ALIGN4) { 1125 align = 4; 1126 } else if (ndr->flags & LIBNDR_FLAG_ALIGN8) { 1127 align = 8; 1128 } 1129 1130 pad = ndr_align_size(relative_offset, align); 1131 if (pad) { 1132 NDR_CHECK(ndr_push_zero(ndr, pad)); 1133 } 1134 1135 return ndr_push_relative_ptr2(ndr, p); 1136 } 1137 if (ndr->relative_end_offset == -1) { 1138 return ndr_push_error(ndr, NDR_ERR_RELATIVE, 1139 "ndr_push_relative_ptr2_start RELATIVE_REVERSE flag set and relative_end_offset %d", 1140 ndr->relative_end_offset); 1141 } 1142 NDR_CHECK(ndr_token_store(ndr, &ndr->relative_begin_list, p, ndr->offset)); 1143 return NDR_ERR_SUCCESS; 1144} 1145 1146/* 1147 push a relative object - stage2 end 1148 this is called during buffers processing 1149*/ 1150_PUBLIC_ enum ndr_err_code ndr_push_relative_ptr2_end(struct ndr_push *ndr, const void *p) 1151{ 1152 uint32_t begin_offset = 0xFFFFFFFF; 1153 ssize_t len; 1154 uint32_t correct_offset = 0; 1155 uint32_t align = 1; 1156 uint32_t pad = 0; 1157 1158 if (p == NULL) { 1159 return NDR_ERR_SUCCESS; 1160 } 1161 1162 if (!(ndr->flags & LIBNDR_FLAG_RELATIVE_REVERSE)) { 1163 return NDR_ERR_SUCCESS; 1164 } 1165 1166 if (ndr->flags & LIBNDR_FLAG_NO_NDR_SIZE) { 1167 /* better say more than calculation a too small buffer */ 1168 NDR_PUSH_ALIGN(ndr, 8); 1169 return NDR_ERR_SUCCESS; 1170 } 1171 1172 if (ndr->relative_end_offset < ndr->offset) { 1173 return ndr_push_error(ndr, NDR_ERR_RELATIVE, 1174 "ndr_push_relative_ptr2_end:" 1175 "relative_end_offset %u < offset %u", 1176 ndr->relative_end_offset, ndr->offset); 1177 } 1178 1179 NDR_CHECK(ndr_token_retrieve(&ndr->relative_begin_list, p, &begin_offset)); 1180 1181 /* we have marshalled a buffer, see how long it was */ 1182 len = ndr->offset - begin_offset; 1183 1184 if (len < 0) { 1185 return ndr_push_error(ndr, NDR_ERR_RELATIVE, 1186 "ndr_push_relative_ptr2_end:" 1187 "offset %u - begin_offset %u < 0", 1188 ndr->offset, begin_offset); 1189 } 1190 1191 if (ndr->relative_end_offset < len) { 1192 return ndr_push_error(ndr, NDR_ERR_RELATIVE, 1193 "ndr_push_relative_ptr2_end:" 1194 "relative_end_offset %u < len %lld", 1195 ndr->offset, (long long)len); 1196 } 1197 1198 /* the reversed offset is at the end of the main buffer */ 1199 correct_offset = ndr->relative_end_offset - len; 1200 1201 if (ndr->flags & LIBNDR_FLAG_NOALIGN) { 1202 align = 1; 1203 } else if (ndr->flags & LIBNDR_FLAG_ALIGN2) { 1204 align = 2; 1205 } else if (ndr->flags & LIBNDR_FLAG_ALIGN4) { 1206 align = 4; 1207 } else if (ndr->flags & LIBNDR_FLAG_ALIGN8) { 1208 align = 8; 1209 } 1210 1211 pad = ndr_align_size(correct_offset, align); 1212 if (pad) { 1213 correct_offset += pad; 1214 correct_offset -= align; 1215 } 1216 1217 if (correct_offset < begin_offset) { 1218 return ndr_push_error(ndr, NDR_ERR_RELATIVE, 1219 "ndr_push_relative_ptr2_end: " 1220 "correct_offset %u < begin_offset %u", 1221 correct_offset, begin_offset); 1222 } 1223 1224 if (len > 0) { 1225 uint32_t clear_size = correct_offset - begin_offset; 1226 1227 clear_size = MIN(clear_size, len); 1228 1229 /* now move the marshalled buffer to the end of the main buffer */ 1230 memmove(ndr->data + correct_offset, ndr->data + begin_offset, len); 1231 1232 if (clear_size) { 1233 /* and wipe out old buffer within the main buffer */ 1234 memset(ndr->data + begin_offset, '\0', clear_size); 1235 } 1236 } 1237 1238 /* and set the end offset for the next buffer */ 1239 ndr->relative_end_offset = correct_offset; 1240 1241 /* finally write the offset to the main buffer */ 1242 ndr->offset = correct_offset; 1243 NDR_CHECK(ndr_push_relative_ptr2(ndr, p)); 1244 1245 /* restore to where we were in the main buffer */ 1246 ndr->offset = begin_offset; 1247 1248 return NDR_ERR_SUCCESS; 1249} 1250 1251/* 1252 get the current base for relative pointers for the pull 1253*/ 1254_PUBLIC_ uint32_t ndr_pull_get_relative_base_offset(struct ndr_pull *ndr) 1255{ 1256 return ndr->relative_base_offset; 1257} 1258 1259/* 1260 restore the old base for relative pointers for the pull 1261*/ 1262_PUBLIC_ void ndr_pull_restore_relative_base_offset(struct ndr_pull *ndr, uint32_t offset) 1263{ 1264 ndr->relative_base_offset = offset; 1265} 1266 1267/* 1268 setup the current base for relative pointers for the pull 1269 called in the NDR_SCALAR stage 1270*/ 1271_PUBLIC_ enum ndr_err_code ndr_pull_setup_relative_base_offset1(struct ndr_pull *ndr, const void *p, uint32_t offset) 1272{ 1273 ndr->relative_base_offset = offset; 1274 return ndr_token_store(ndr, &ndr->relative_base_list, p, offset); 1275} 1276 1277/* 1278 setup the current base for relative pointers for the pull 1279 called in the NDR_BUFFERS stage 1280*/ 1281_PUBLIC_ enum ndr_err_code ndr_pull_setup_relative_base_offset2(struct ndr_pull *ndr, const void *p) 1282{ 1283 return ndr_token_retrieve(&ndr->relative_base_list, p, &ndr->relative_base_offset); 1284} 1285 1286/* 1287 pull a relative object - stage1 1288 called during SCALARS processing 1289*/ 1290_PUBLIC_ enum ndr_err_code ndr_pull_relative_ptr1(struct ndr_pull *ndr, const void *p, uint32_t rel_offset) 1291{ 1292 rel_offset += ndr->relative_base_offset; 1293 if (rel_offset > ndr->data_size) { 1294 return ndr_pull_error(ndr, NDR_ERR_BUFSIZE, 1295 "ndr_pull_relative_ptr1 rel_offset(%u) > ndr->data_size(%u)", 1296 rel_offset, ndr->data_size); 1297 } 1298 return ndr_token_store(ndr, &ndr->relative_list, p, rel_offset); 1299} 1300 1301/* 1302 pull a relative object - stage2 1303 called during BUFFERS processing 1304*/ 1305_PUBLIC_ enum ndr_err_code ndr_pull_relative_ptr2(struct ndr_pull *ndr, const void *p) 1306{ 1307 uint32_t rel_offset; 1308 NDR_CHECK(ndr_token_retrieve(&ndr->relative_list, p, &rel_offset)); 1309 return ndr_pull_set_offset(ndr, rel_offset); 1310} 1311 1312const static struct { 1313 enum ndr_err_code err; 1314 const char *string; 1315} ndr_err_code_strings[] = { 1316 { NDR_ERR_SUCCESS, "Success" }, 1317 { NDR_ERR_ARRAY_SIZE, "Bad Array Size" }, 1318 { NDR_ERR_BAD_SWITCH, "Bad Switch" }, 1319 { NDR_ERR_OFFSET, "Offset Error" }, 1320 { NDR_ERR_RELATIVE, "Relative Pointer Error" }, 1321 { NDR_ERR_CHARCNV, "Character Conversion Error" }, 1322 { NDR_ERR_LENGTH, "Length Error" }, 1323 { NDR_ERR_SUBCONTEXT, "Subcontext Error" }, 1324 { NDR_ERR_COMPRESSION, "Compression Error" }, 1325 { NDR_ERR_STRING, "String Error" }, 1326 { NDR_ERR_VALIDATE, "Validate Error" }, 1327 { NDR_ERR_BUFSIZE, "Buffer Size Error" }, 1328 { NDR_ERR_ALLOC, "Allocation Error" }, 1329 { NDR_ERR_RANGE, "Range Error" }, 1330 { NDR_ERR_TOKEN, "Token Error" }, 1331 { NDR_ERR_IPV4ADDRESS, "IPv4 Address Error" }, 1332 { NDR_ERR_INVALID_POINTER, "Invalid Pointer" }, 1333 { NDR_ERR_UNREAD_BYTES, "Unread Bytes" }, 1334 { NDR_ERR_NDR64, "NDR64 assertion error" }, 1335 { 0, NULL } 1336}; 1337 1338_PUBLIC_ const char *ndr_map_error2string(enum ndr_err_code ndr_err) 1339{ 1340 int i; 1341 for (i = 0; ndr_err_code_strings[i].string != NULL; i++) { 1342 if (ndr_err_code_strings[i].err == ndr_err) 1343 return ndr_err_code_strings[i].string; 1344 } 1345 return "Unknown error"; 1346} 1347