source: branches/samba-3.5.x/librpc/ndr/ndr.c@ 778

Last change on this file since 778 was 596, checked in by Herwig Bauernfeind, 14 years ago

Samba 3.5: Update trunk to 3.5.8
File size: 36.3 KB
Line 
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}
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