2 Unix SMB/CIFS implementation.
6 Copyright (C) Andrew Tridgell 2003
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.
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.
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/>.
23 this provides the core routines for NDR parsing functions
25 see http://www.opengroup.org/onlinepubs/9629399/chap14.htm for details
30 #include "librpc/ndr/libndr.h"
31 #include "../lib/util/dlinklist.h"
32 #if _SAMBA_BUILD_ == 4
33 #include "param/param.h"
36 #define NDR_BASE_MARSHALL_SIZE 1024
38 /* this guid indicates NDR encoding in a protocol tower */
39 const struct ndr_syntax_id ndr_transfer_syntax = {
40 { 0x8a885d04, 0x1ceb, 0x11c9, {0x9f, 0xe8}, {0x08,0x00,0x2b,0x10,0x48,0x60} },
44 const struct ndr_syntax_id ndr64_transfer_syntax = {
45 { 0x71710533, 0xbeba, 0x4937, {0x83, 0x19}, {0xb5,0xdb,0xef,0x9c,0xcc,0x36} },
50 work out the number of bytes needed to align on a n byte boundary
52 _PUBLIC_ size_t ndr_align_size(uint32_t offset, size_t n)
54 if ((offset & (n-1)) == 0) return 0;
55 return n - (offset & (n-1));
59 initialise a ndr parse structure from a data blob
61 _PUBLIC_ struct ndr_pull *ndr_pull_init_blob(const DATA_BLOB *blob, TALLOC_CTX *mem_ctx, struct smb_iconv_convenience *iconv_convenience)
65 ndr = talloc_zero(mem_ctx, struct ndr_pull);
66 if (!ndr) return NULL;
67 ndr->current_mem_ctx = mem_ctx;
69 ndr->data = blob->data;
70 ndr->data_size = blob->length;
71 ndr->iconv_convenience = talloc_reference(ndr, iconv_convenience);
77 advance by 'size' bytes
79 _PUBLIC_ enum ndr_err_code ndr_pull_advance(struct ndr_pull *ndr, uint32_t size)
82 if (ndr->offset > ndr->data_size) {
83 return ndr_pull_error(ndr, NDR_ERR_BUFSIZE,
84 "ndr_pull_advance by %u failed",
87 return NDR_ERR_SUCCESS;
91 set the parse offset to 'ofs'
93 static enum ndr_err_code ndr_pull_set_offset(struct ndr_pull *ndr, uint32_t ofs)
96 if (ndr->offset > ndr->data_size) {
97 return ndr_pull_error(ndr, NDR_ERR_BUFSIZE,
98 "ndr_pull_set_offset %u failed",
101 return NDR_ERR_SUCCESS;
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)
107 struct ndr_push *ndr;
109 ndr = talloc_zero(mem_ctx, struct ndr_push);
115 ndr->alloc_size = NDR_BASE_MARSHALL_SIZE;
116 ndr->data = talloc_array(ndr, uint8_t, ndr->alloc_size);
120 ndr->iconv_convenience = talloc_reference(ndr, iconv_convenience);
125 /* return a DATA_BLOB structure for the current ndr_push marshalled data */
126 _PUBLIC_ DATA_BLOB ndr_push_blob(struct ndr_push *ndr)
129 blob = data_blob_const(ndr->data, ndr->offset);
130 if (ndr->alloc_size > ndr->offset) {
131 ndr->data[ndr->offset] = 0;
138 expand the available space in the buffer to ndr->offset + extra_size
140 _PUBLIC_ enum ndr_err_code ndr_push_expand(struct ndr_push *ndr, uint32_t extra_size)
142 uint32_t size = extra_size + ndr->offset;
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",
150 if (ndr->alloc_size > size) {
151 return NDR_ERR_SUCCESS;
154 ndr->alloc_size += NDR_BASE_MARSHALL_SIZE;
155 if (size+1 > ndr->alloc_size) {
156 ndr->alloc_size = size+1;
158 ndr->data = talloc_realloc(ndr, ndr->data, uint8_t, ndr->alloc_size);
160 return ndr_push_error(ndr, NDR_ERR_ALLOC, "Failed to push_expand to %u",
164 return NDR_ERR_SUCCESS;
167 _PUBLIC_ void ndr_print_debug_helper(struct ndr_print *ndr, const char *format, ...)
173 va_start(ap, format);
174 ret = vasprintf(&s, format, ap);
181 for (i=0;i<ndr->depth;i++) {
185 DEBUGADD(1,("%s\n", s));
189 _PUBLIC_ void ndr_print_string_helper(struct ndr_print *ndr, const char *format, ...)
194 for (i=0;i<ndr->depth;i++) {
195 ndr->private_data = talloc_asprintf_append_buffer(
196 (char *)ndr->private_data, " ");
199 va_start(ap, format);
200 ndr->private_data = talloc_vasprintf_append_buffer((char *)ndr->private_data,
203 ndr->private_data = talloc_asprintf_append_buffer((char *)ndr->private_data,
208 a useful helper function for printing idl structures via DEBUG()
210 _PUBLIC_ void ndr_print_debug(ndr_print_fn_t fn, const char *name, void *ptr)
212 struct ndr_print *ndr;
216 ndr = talloc_zero(NULL, struct ndr_print);
218 ndr->print = ndr_print_debug_helper;
226 a useful helper function for printing idl unions via DEBUG()
228 _PUBLIC_ void ndr_print_union_debug(ndr_print_fn_t fn, const char *name, uint32_t level, void *ptr)
230 struct ndr_print *ndr;
234 ndr = talloc_zero(NULL, struct ndr_print);
236 ndr->print = ndr_print_debug_helper;
239 ndr_print_set_switch_value(ndr, ptr, level);
245 a useful helper function for printing idl function calls via DEBUG()
247 _PUBLIC_ void ndr_print_function_debug(ndr_print_function_t fn, const char *name, int flags, void *ptr)
249 struct ndr_print *ndr;
253 ndr = talloc_zero(NULL, struct ndr_print);
255 ndr->print = ndr_print_debug_helper;
259 /* this is a s4 hack until we build up the courage to pass
260 * this all the way down
262 #if _SAMBA_BUILD_ == 4
263 ndr->iconv_convenience = smb_iconv_convenience_init(talloc_autofree_context(), "ASCII", "UTF-8", true);
266 fn(ndr, name, flags, ptr);
271 a useful helper function for printing idl structures to a string
273 _PUBLIC_ char *ndr_print_struct_string(TALLOC_CTX *mem_ctx, ndr_print_fn_t fn, const char *name, void *ptr)
275 struct ndr_print *ndr;
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) {
284 ndr->print = ndr_print_string_helper;
288 /* this is a s4 hack until we build up the courage to pass
289 * this all the way down
291 #if _SAMBA_BUILD_ == 4
292 ndr->iconv_convenience = smb_iconv_convenience_init(talloc_autofree_context(), "ASCII", "UTF-8", true);
296 ret = talloc_steal(mem_ctx, (char *)ndr->private_data);
303 a useful helper function for printing idl unions to a string
305 _PUBLIC_ char *ndr_print_union_string(TALLOC_CTX *mem_ctx, ndr_print_fn_t fn, const char *name, uint32_t level, void *ptr)
307 struct ndr_print *ndr;
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) {
316 ndr->print = ndr_print_string_helper;
319 ndr_print_set_switch_value(ndr, ptr, level);
321 ret = talloc_steal(mem_ctx, (char *)ndr->private_data);
328 a useful helper function for printing idl function calls to a string
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)
334 struct ndr_print *ndr;
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) {
343 ndr->print = ndr_print_string_helper;
346 fn(ndr, name, flags, ptr);
347 ret = talloc_steal(mem_ctx, (char *)ndr->private_data);
353 _PUBLIC_ void ndr_set_flags(uint32_t *pflags, uint32_t new_flags)
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;
360 if (new_flags & LIBNDR_FLAG_BIGENDIAN) {
361 (*pflags) &= ~LIBNDR_FLAG_LITTLE_ENDIAN;
362 (*pflags) &= ~LIBNDR_FLAG_NDR64;
364 if (new_flags & LIBNDR_FLAG_REMAINING) {
365 (*pflags) &= ~LIBNDR_ALIGN_FLAGS;
367 if (new_flags & LIBNDR_ALIGN_FLAGS) {
368 (*pflags) &= ~LIBNDR_FLAG_REMAINING;
370 if (new_flags & LIBNDR_FLAG_NO_RELATIVE_REVERSE) {
371 (*pflags) &= ~LIBNDR_FLAG_RELATIVE_REVERSE;
373 (*pflags) |= new_flags;
377 return and possibly log an NDR error
379 _PUBLIC_ enum ndr_err_code ndr_pull_error(struct ndr_pull *ndr,
380 enum ndr_err_code ndr_err,
381 const char *format, ...)
387 va_start(ap, format);
388 ret = vasprintf(&s, format, ap);
392 return NDR_ERR_ALLOC;
395 DEBUG(1,("ndr_pull_error(%u): %s\n", ndr_err, s));
403 return and possibly log an NDR error
405 _PUBLIC_ enum ndr_err_code ndr_push_error(struct ndr_push *ndr,
406 enum ndr_err_code ndr_err,
407 const char *format, ...)
413 va_start(ap, format);
414 ret = vasprintf(&s, format, ap);
418 return NDR_ERR_ALLOC;
421 DEBUG(1,("ndr_push_error(%u): %s\n", ndr_err, s));
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
432 _PUBLIC_ enum ndr_err_code ndr_pull_subcontext_start(struct ndr_pull *ndr,
433 struct ndr_pull **_subndr,
437 struct ndr_pull *subndr;
438 uint32_t r_content_size;
439 bool force_le = false;
440 bool force_be = false;
442 switch (header_size) {
444 uint32_t content_size = ndr->data_size - ndr->offset;
446 content_size = size_is;
448 r_content_size = content_size;
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);
459 r_content_size = content_size;
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);
470 r_content_size = content_size;
475 * Common Type Header for the Serialization Stream
476 * See [MS-RPCE] 2.2.6 Type Serialization Version 1
482 uint32_t content_size;
486 NDR_CHECK(ndr_pull_uint8(ndr, NDR_SCALARS, &version));
489 return ndr_pull_error(ndr, NDR_ERR_SUBCONTEXT,
490 "Bad subcontext (PULL) Common Type Header version %d != 1",
498 NDR_CHECK(ndr_pull_uint8(ndr, NDR_SCALARS, &drep));
501 } else if (drep == 0x00) {
504 return ndr_pull_error(ndr, NDR_ERR_SUBCONTEXT,
505 "Bad subcontext (PULL) Common Type Header invalid drep 0x%02X",
509 /* length of the "Private Header for Constructed Type" */
510 NDR_CHECK(ndr_pull_uint16(ndr, NDR_SCALARS, &hdrlen));
512 return ndr_pull_error(ndr, NDR_ERR_SUBCONTEXT,
513 "Bad subcontext (PULL) Common Type Header length %d != 8",
517 /* filler should be ignored */
518 NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &filler));
521 * Private Header for Constructed Type
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);
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);
535 r_content_size = content_size;
538 NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &reserved));
542 return ndr_pull_error(ndr, NDR_ERR_SUBCONTEXT, "Bad subcontext (PULL) header_size %d",
546 NDR_PULL_NEED_BYTES(ndr, r_content_size);
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;
553 subndr->data = ndr->data + ndr->offset;
555 subndr->data_size = r_content_size;
556 subndr->iconv_convenience = talloc_reference(subndr, ndr->iconv_convenience);
559 ndr_set_flags(&ndr->flags, LIBNDR_FLAG_LITTLE_ENDIAN);
560 } else if (force_be) {
561 ndr_set_flags(&ndr->flags, LIBNDR_FLAG_BIGENDIAN);
565 return NDR_ERR_SUCCESS;
568 _PUBLIC_ enum ndr_err_code ndr_pull_subcontext_end(struct ndr_pull *ndr,
569 struct ndr_pull *subndr,
576 } else if (header_size > 0) {
577 advance = subndr->data_size;
579 advance = subndr->offset;
581 NDR_CHECK(ndr_pull_advance(ndr, advance));
582 return NDR_ERR_SUCCESS;
585 _PUBLIC_ enum ndr_err_code ndr_push_subcontext_start(struct ndr_push *ndr,
586 struct ndr_push **_subndr,
590 struct ndr_push *subndr;
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;
597 NDR_CHECK(ndr_push_zero(subndr, size_is));
599 subndr->relative_end_offset = size_is;
603 return NDR_ERR_SUCCESS;
607 push a subcontext header
609 _PUBLIC_ enum ndr_err_code ndr_push_subcontext_end(struct ndr_push *ndr,
610 struct ndr_push *subndr,
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);
622 subndr->offset = size_is;
625 switch (header_size) {
630 NDR_CHECK(ndr_push_uint16(ndr, NDR_SCALARS, subndr->offset));
634 NDR_CHECK(ndr_push_uint3264(ndr, NDR_SCALARS, subndr->offset));
639 * Common Type Header for the Serialization Stream
640 * See [MS-RPCE] 2.2.6 Type Serialization Version 1
642 padding_len = NDR_ROUND(subndr->offset, 8) - subndr->offset;
643 if (padding_len > 0) {
644 NDR_CHECK(ndr_push_zero(subndr, padding_len));
648 NDR_CHECK(ndr_push_uint8(ndr, NDR_SCALARS, 1));
654 NDR_CHECK(ndr_push_uint8(ndr, NDR_SCALARS, NDR_BE(ndr)?0x00:0x10));
656 /* length of the "Private Header for Constructed Type" */
657 NDR_CHECK(ndr_push_uint16(ndr, NDR_SCALARS, 8));
660 NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS, 0xCCCCCCCC));
663 * Private Header for Constructed Type
665 /* length - will be updated latter */
666 NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS, subndr->offset));
669 NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS, 0));
673 return ndr_push_error(ndr, NDR_ERR_SUBCONTEXT, "Bad subcontext header size %d",
677 NDR_CHECK(ndr_push_bytes(ndr, subndr->data, subndr->offset));
678 return NDR_ERR_SUCCESS;
682 store a token in the ndr context, for later retrieval
684 _PUBLIC_ enum ndr_err_code ndr_token_store(TALLOC_CTX *mem_ctx,
685 struct ndr_token_list **list,
689 struct ndr_token_list *tok;
690 tok = talloc(mem_ctx, struct ndr_token_list);
691 NDR_ERR_HAVE_NO_MEMORY(tok);
694 DLIST_ADD((*list), tok);
695 return NDR_ERR_SUCCESS;
699 retrieve a token from a ndr context, using cmp_fn to match the tokens
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)
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;
709 return NDR_ERR_TOKEN;
713 DLIST_REMOVE((*list), tok);
716 return NDR_ERR_SUCCESS;
720 retrieve a token from a ndr context
722 _PUBLIC_ enum ndr_err_code ndr_token_retrieve(struct ndr_token_list **list, const void *key, uint32_t *v)
724 return ndr_token_retrieve_cmp_fn(list, key, v, NULL, true);
728 peek at but don't removed a token from a ndr context
730 _PUBLIC_ uint32_t ndr_token_peek(struct ndr_token_list **list, const void *key)
732 enum ndr_err_code status;
735 status = ndr_token_retrieve_cmp_fn(list, key, &v, NULL, false);
736 if (!NDR_ERR_CODE_IS_SUCCESS(status)) {
744 pull an array size field and add it to the array_size_list token list
746 _PUBLIC_ enum ndr_err_code ndr_pull_array_size(struct ndr_pull *ndr, const void *p)
749 NDR_CHECK(ndr_pull_uint3264(ndr, NDR_SCALARS, &size));
750 return ndr_token_store(ndr, &ndr->array_size_list, p, size);
754 get the stored array size field
756 _PUBLIC_ uint32_t ndr_get_array_size(struct ndr_pull *ndr, const void *p)
758 return ndr_token_peek(&ndr->array_size_list, p);
762 check the stored array size field
764 _PUBLIC_ enum ndr_err_code ndr_check_array_size(struct ndr_pull *ndr, void *p, uint32_t size)
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",
773 return NDR_ERR_SUCCESS;
777 pull an array length field and add it to the array_length_list token list
779 _PUBLIC_ enum ndr_err_code ndr_pull_array_length(struct ndr_pull *ndr, const void *p)
781 uint32_t length, offset;
782 NDR_CHECK(ndr_pull_uint3264(ndr, NDR_SCALARS, &offset));
784 return ndr_pull_error(ndr, NDR_ERR_ARRAY_SIZE,
785 "non-zero array offset %u\n", offset);
787 NDR_CHECK(ndr_pull_uint3264(ndr, NDR_SCALARS, &length));
788 return ndr_token_store(ndr, &ndr->array_length_list, p, length);
792 get the stored array length field
794 _PUBLIC_ uint32_t ndr_get_array_length(struct ndr_pull *ndr, const void *p)
796 return ndr_token_peek(&ndr->array_length_list, p);
800 check the stored array length field
802 _PUBLIC_ enum ndr_err_code ndr_check_array_length(struct ndr_pull *ndr, void *p, uint32_t length)
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",
811 return NDR_ERR_SUCCESS;
817 _PUBLIC_ enum ndr_err_code ndr_push_set_switch_value(struct ndr_push *ndr, const void *p, uint32_t val)
819 return ndr_token_store(ndr, &ndr->switch_list, p, val);
822 _PUBLIC_ enum ndr_err_code ndr_pull_set_switch_value(struct ndr_pull *ndr, const void *p, uint32_t val)
824 return ndr_token_store(ndr, &ndr->switch_list, p, val);
827 _PUBLIC_ enum ndr_err_code ndr_print_set_switch_value(struct ndr_print *ndr, const void *p, uint32_t val)
829 return ndr_token_store(ndr, &ndr->switch_list, p, val);
833 retrieve a switch value
835 _PUBLIC_ uint32_t ndr_push_get_switch_value(struct ndr_push *ndr, const void *p)
837 return ndr_token_peek(&ndr->switch_list, p);
840 _PUBLIC_ uint32_t ndr_pull_get_switch_value(struct ndr_pull *ndr, const void *p)
842 return ndr_token_peek(&ndr->switch_list, p);
845 _PUBLIC_ uint32_t ndr_print_get_switch_value(struct ndr_print *ndr, const void *p)
847 return ndr_token_peek(&ndr->switch_list, p);
851 pull a struct from a blob using NDR
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)
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));
861 return NDR_ERR_SUCCESS;
865 pull a struct from a blob using NDR - failing if all bytes are not consumed
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)
871 struct ndr_pull *ndr;
872 uint32_t highest_ofs;
873 ndr = ndr_pull_init_blob(blob, mem_ctx, iconv_convenience);
874 NDR_ERR_HAVE_NO_MEMORY(ndr);
875 NDR_CHECK_FREE(fn(ndr, NDR_SCALARS|NDR_BUFFERS, p));
876 if (ndr->offset > ndr->relative_highest_offset) {
877 highest_ofs = ndr->offset;
879 highest_ofs = ndr->relative_highest_offset;
881 if (highest_ofs < ndr->data_size) {
882 enum ndr_err_code ret;
883 ret = ndr_pull_error(ndr, NDR_ERR_UNREAD_BYTES,
884 "not all bytes consumed ofs[%u] size[%u]",
885 highest_ofs, ndr->data_size);
890 return NDR_ERR_SUCCESS;
894 pull a union from a blob using NDR, given the union discriminator
896 _PUBLIC_ enum ndr_err_code ndr_pull_union_blob(const DATA_BLOB *blob, TALLOC_CTX *mem_ctx,
897 struct smb_iconv_convenience *iconv_convenience, void *p,
898 uint32_t level, ndr_pull_flags_fn_t fn)
900 struct ndr_pull *ndr;
901 ndr = ndr_pull_init_blob(blob, mem_ctx, iconv_convenience);
902 NDR_ERR_HAVE_NO_MEMORY(ndr);
903 NDR_CHECK_FREE(ndr_pull_set_switch_value(ndr, p, level));
904 NDR_CHECK_FREE(fn(ndr, NDR_SCALARS|NDR_BUFFERS, p));
906 return NDR_ERR_SUCCESS;
910 pull a union from a blob using NDR, given the union discriminator,
911 failing if all bytes are not consumed
913 _PUBLIC_ enum ndr_err_code ndr_pull_union_blob_all(const DATA_BLOB *blob, TALLOC_CTX *mem_ctx,
914 struct smb_iconv_convenience *iconv_convenience, void *p,
915 uint32_t level, ndr_pull_flags_fn_t fn)
917 struct ndr_pull *ndr;
918 uint32_t highest_ofs;
919 ndr = ndr_pull_init_blob(blob, mem_ctx, iconv_convenience);
920 NDR_ERR_HAVE_NO_MEMORY(ndr);
921 NDR_CHECK_FREE(ndr_pull_set_switch_value(ndr, p, level));
922 NDR_CHECK_FREE(fn(ndr, NDR_SCALARS|NDR_BUFFERS, p));
923 if (ndr->offset > ndr->relative_highest_offset) {
924 highest_ofs = ndr->offset;
926 highest_ofs = ndr->relative_highest_offset;
928 if (highest_ofs < ndr->data_size) {
929 enum ndr_err_code ret;
930 ret = ndr_pull_error(ndr, NDR_ERR_UNREAD_BYTES,
931 "not all bytes consumed ofs[%u] size[%u]",
932 highest_ofs, ndr->data_size);
937 return NDR_ERR_SUCCESS;
941 push a struct to a blob using NDR
943 _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)
945 struct ndr_push *ndr;
946 ndr = ndr_push_init_ctx(mem_ctx, iconv_convenience);
947 NDR_ERR_HAVE_NO_MEMORY(ndr);
949 NDR_CHECK(fn(ndr, NDR_SCALARS|NDR_BUFFERS, p));
951 *blob = ndr_push_blob(ndr);
952 talloc_steal(mem_ctx, blob->data);
955 return NDR_ERR_SUCCESS;
959 push a union to a blob using NDR
961 _PUBLIC_ enum ndr_err_code ndr_push_union_blob(DATA_BLOB *blob, TALLOC_CTX *mem_ctx, struct smb_iconv_convenience *iconv_convenience, void *p,
962 uint32_t level, ndr_push_flags_fn_t fn)
964 struct ndr_push *ndr;
965 ndr = ndr_push_init_ctx(mem_ctx, iconv_convenience);
966 NDR_ERR_HAVE_NO_MEMORY(ndr);
968 NDR_CHECK(ndr_push_set_switch_value(ndr, p, level));
969 NDR_CHECK(fn(ndr, NDR_SCALARS|NDR_BUFFERS, p));
971 *blob = ndr_push_blob(ndr);
972 talloc_steal(mem_ctx, blob->data);
975 return NDR_ERR_SUCCESS;
979 generic ndr_size_*() handler for structures
981 _PUBLIC_ size_t ndr_size_struct(const void *p, int flags, ndr_push_flags_fn_t push, struct smb_iconv_convenience *iconv_convenience)
983 struct ndr_push *ndr;
984 enum ndr_err_code status;
987 /* avoid recursion */
988 if (flags & LIBNDR_FLAG_NO_NDR_SIZE) return 0;
990 ndr = ndr_push_init_ctx(NULL, iconv_convenience);
992 ndr->flags |= flags | LIBNDR_FLAG_NO_NDR_SIZE;
993 status = push(ndr, NDR_SCALARS|NDR_BUFFERS, discard_const(p));
994 if (!NDR_ERR_CODE_IS_SUCCESS(status)) {
1004 generic ndr_size_*() handler for unions
1006 _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)
1008 struct ndr_push *ndr;
1009 enum ndr_err_code status;
1012 /* avoid recursion */
1013 if (flags & LIBNDR_FLAG_NO_NDR_SIZE) return 0;
1015 ndr = ndr_push_init_ctx(NULL, iconv_convenience);
1017 ndr->flags |= flags | LIBNDR_FLAG_NO_NDR_SIZE;
1019 status = ndr_push_set_switch_value(ndr, p, level);
1020 if (!NDR_ERR_CODE_IS_SUCCESS(status)) {
1024 status = push(ndr, NDR_SCALARS|NDR_BUFFERS, p);
1025 if (!NDR_ERR_CODE_IS_SUCCESS(status)) {
1035 get the current base for relative pointers for the push
1037 _PUBLIC_ uint32_t ndr_push_get_relative_base_offset(struct ndr_push *ndr)
1039 return ndr->relative_base_offset;
1043 restore the old base for relative pointers for the push
1045 _PUBLIC_ void ndr_push_restore_relative_base_offset(struct ndr_push *ndr, uint32_t offset)
1047 ndr->relative_base_offset = offset;
1051 setup the current base for relative pointers for the push
1052 called in the NDR_SCALAR stage
1054 _PUBLIC_ enum ndr_err_code ndr_push_setup_relative_base_offset1(struct ndr_push *ndr, const void *p, uint32_t offset)
1056 ndr->relative_base_offset = offset;
1057 return ndr_token_store(ndr, &ndr->relative_base_list, p, offset);
1061 setup the current base for relative pointers for the push
1062 called in the NDR_BUFFERS stage
1064 _PUBLIC_ enum ndr_err_code ndr_push_setup_relative_base_offset2(struct ndr_push *ndr, const void *p)
1066 return ndr_token_retrieve(&ndr->relative_base_list, p, &ndr->relative_base_offset);
1070 push a relative object - stage1
1071 this is called during SCALARS processing
1073 _PUBLIC_ enum ndr_err_code ndr_push_relative_ptr1(struct ndr_push *ndr, const void *p)
1076 NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS, 0));
1077 return NDR_ERR_SUCCESS;
1079 NDR_CHECK(ndr_push_align(ndr, 4));
1080 NDR_CHECK(ndr_token_store(ndr, &ndr->relative_list, p, ndr->offset));
1081 return ndr_push_uint32(ndr, NDR_SCALARS, 0xFFFFFFFF);
1085 push a short relative object - stage1
1086 this is called during SCALARS processing
1088 _PUBLIC_ enum ndr_err_code ndr_push_short_relative_ptr1(struct ndr_push *ndr, const void *p)
1091 NDR_CHECK(ndr_push_uint16(ndr, NDR_SCALARS, 0));
1092 return NDR_ERR_SUCCESS;
1094 NDR_CHECK(ndr_push_align(ndr, 2));
1095 NDR_CHECK(ndr_token_store(ndr, &ndr->relative_list, p, ndr->offset));
1096 return ndr_push_uint16(ndr, NDR_SCALARS, 0xFFFF);
1099 push a relative object - stage2
1100 this is called during buffers processing
1102 static enum ndr_err_code ndr_push_relative_ptr2(struct ndr_push *ndr, const void *p)
1104 uint32_t save_offset;
1105 uint32_t ptr_offset = 0xFFFFFFFF;
1107 return NDR_ERR_SUCCESS;
1109 save_offset = ndr->offset;
1110 NDR_CHECK(ndr_token_retrieve(&ndr->relative_list, p, &ptr_offset));
1111 if (ptr_offset > ndr->offset) {
1112 return ndr_push_error(ndr, NDR_ERR_BUFSIZE,
1113 "ndr_push_relative_ptr2 ptr_offset(%u) > ndr->offset(%u)",
1114 ptr_offset, ndr->offset);
1116 ndr->offset = ptr_offset;
1117 if (save_offset < ndr->relative_base_offset) {
1118 return ndr_push_error(ndr, NDR_ERR_BUFSIZE,
1119 "ndr_push_relative_ptr2 save_offset(%u) < ndr->relative_base_offset(%u)",
1120 save_offset, ndr->relative_base_offset);
1122 NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS, save_offset - ndr->relative_base_offset));
1123 ndr->offset = save_offset;
1124 return NDR_ERR_SUCCESS;
1127 push a short relative object - stage2
1128 this is called during buffers processing
1130 _PUBLIC_ enum ndr_err_code ndr_push_short_relative_ptr2(struct ndr_push *ndr, const void *p)
1132 uint32_t save_offset;
1133 uint32_t ptr_offset = 0xFFFF;
1135 return NDR_ERR_SUCCESS;
1137 save_offset = ndr->offset;
1138 NDR_CHECK(ndr_token_retrieve(&ndr->relative_list, p, &ptr_offset));
1139 if (ptr_offset > ndr->offset) {
1140 return ndr_push_error(ndr, NDR_ERR_BUFSIZE,
1141 "ndr_push_short_relative_ptr2 ptr_offset(%u) > ndr->offset(%u)",
1142 ptr_offset, ndr->offset);
1144 ndr->offset = ptr_offset;
1145 if (save_offset < ndr->relative_base_offset) {
1146 return ndr_push_error(ndr, NDR_ERR_BUFSIZE,
1147 "ndr_push_relative_ptr2 save_offset(%u) < ndr->relative_base_offset(%u)",
1148 save_offset, ndr->relative_base_offset);
1150 NDR_CHECK(ndr_push_uint16(ndr, NDR_SCALARS, save_offset - ndr->relative_base_offset));
1151 ndr->offset = save_offset;
1152 return NDR_ERR_SUCCESS;
1156 push a relative object - stage2 start
1157 this is called during buffers processing
1159 _PUBLIC_ enum ndr_err_code ndr_push_relative_ptr2_start(struct ndr_push *ndr, const void *p)
1162 return NDR_ERR_SUCCESS;
1164 if (!(ndr->flags & LIBNDR_FLAG_RELATIVE_REVERSE)) {
1165 return ndr_push_relative_ptr2(ndr, p);
1168 return ndr_push_error(ndr, NDR_ERR_RELATIVE,
1169 "ndr_push_relative_ptr2_start RELATIVE_REVERSE flag set, but not supported");
1173 push a relative object - stage2 end
1174 this is called during buffers processing
1176 _PUBLIC_ enum ndr_err_code ndr_push_relative_ptr2_end(struct ndr_push *ndr, const void *p)
1179 return NDR_ERR_SUCCESS;
1181 return NDR_ERR_SUCCESS;
1185 get the current base for relative pointers for the pull
1187 _PUBLIC_ uint32_t ndr_pull_get_relative_base_offset(struct ndr_pull *ndr)
1189 return ndr->relative_base_offset;
1193 restore the old base for relative pointers for the pull
1195 _PUBLIC_ void ndr_pull_restore_relative_base_offset(struct ndr_pull *ndr, uint32_t offset)
1197 ndr->relative_base_offset = offset;
1201 setup the current base for relative pointers for the pull
1202 called in the NDR_SCALAR stage
1204 _PUBLIC_ enum ndr_err_code ndr_pull_setup_relative_base_offset1(struct ndr_pull *ndr, const void *p, uint32_t offset)
1206 ndr->relative_base_offset = offset;
1207 return ndr_token_store(ndr, &ndr->relative_base_list, p, offset);
1211 setup the current base for relative pointers for the pull
1212 called in the NDR_BUFFERS stage
1214 _PUBLIC_ enum ndr_err_code ndr_pull_setup_relative_base_offset2(struct ndr_pull *ndr, const void *p)
1216 return ndr_token_retrieve(&ndr->relative_base_list, p, &ndr->relative_base_offset);
1220 pull a relative object - stage1
1221 called during SCALARS processing
1223 _PUBLIC_ enum ndr_err_code ndr_pull_relative_ptr1(struct ndr_pull *ndr, const void *p, uint32_t rel_offset)
1225 rel_offset += ndr->relative_base_offset;
1226 if (rel_offset > ndr->data_size) {
1227 return ndr_pull_error(ndr, NDR_ERR_BUFSIZE,
1228 "ndr_pull_relative_ptr1 rel_offset(%u) > ndr->data_size(%u)",
1229 rel_offset, ndr->data_size);
1231 return ndr_token_store(ndr, &ndr->relative_list, p, rel_offset);
1235 pull a relative object - stage2
1236 called during BUFFERS processing
1238 _PUBLIC_ enum ndr_err_code ndr_pull_relative_ptr2(struct ndr_pull *ndr, const void *p)
1240 uint32_t rel_offset;
1241 NDR_CHECK(ndr_token_retrieve(&ndr->relative_list, p, &rel_offset));
1242 return ndr_pull_set_offset(ndr, rel_offset);
1245 const static struct {
1246 enum ndr_err_code err;
1248 } ndr_err_code_strings[] = {
1249 { NDR_ERR_SUCCESS, "Success" },
1250 { NDR_ERR_ARRAY_SIZE, "Bad Array Size" },
1251 { NDR_ERR_BAD_SWITCH, "Bad Switch" },
1252 { NDR_ERR_OFFSET, "Offset Error" },
1253 { NDR_ERR_RELATIVE, "Relative Pointer Error" },
1254 { NDR_ERR_CHARCNV, "Character Conversion Error" },
1255 { NDR_ERR_LENGTH, "Length Error" },
1256 { NDR_ERR_SUBCONTEXT, "Subcontext Error" },
1257 { NDR_ERR_COMPRESSION, "Compression Error" },
1258 { NDR_ERR_STRING, "String Error" },
1259 { NDR_ERR_VALIDATE, "Validate Error" },
1260 { NDR_ERR_BUFSIZE, "Buffer Size Error" },
1261 { NDR_ERR_ALLOC, "Allocation Error" },
1262 { NDR_ERR_RANGE, "Range Error" },
1263 { NDR_ERR_TOKEN, "Token Error" },
1264 { NDR_ERR_IPV4ADDRESS, "IPv4 Address Error" },
1265 { NDR_ERR_INVALID_POINTER, "Invalid Pointer" },
1266 { NDR_ERR_UNREAD_BYTES, "Unread Bytes" },
1267 { NDR_ERR_NDR64, "NDR64 assertion error" },
1271 _PUBLIC_ const char *ndr_map_error2string(enum ndr_err_code ndr_err)
1274 for (i = 0; ndr_err_code_strings[i].string != NULL; i++) {
1275 if (ndr_err_code_strings[i].err == ndr_err)
1276 return ndr_err_code_strings[i].string;
1278 return "Unknown error";