diff options
Diffstat (limited to 'source4/librpc/ndr/ndr.c')
| -rw-r--r-- | source4/librpc/ndr/ndr.c | 1103 |
1 files changed, 0 insertions, 1103 deletions
diff --git a/source4/librpc/ndr/ndr.c b/source4/librpc/ndr/ndr.c deleted file mode 100644 index c5e4c44794..0000000000 --- a/source4/librpc/ndr/ndr.c +++ /dev/null @@ -1,1103 +0,0 @@ -/* - Unix SMB/CIFS implementation. - - libndr interface - - Copyright (C) Andrew Tridgell 2003 - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 3 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see <http://www.gnu.org/licenses/>. -*/ - -/* - this provides the core routines for NDR parsing functions - - see http://www.opengroup.org/onlinepubs/9629399/chap14.htm for details - of NDR encoding rules -*/ - -#include "includes.h" -#include "librpc/ndr/libndr.h" -#include "lib/util/dlinklist.h" -#include "librpc/gen_ndr/dcerpc.h" -#include "param/param.h" - -#define NDR_BASE_MARSHALL_SIZE 1024 - -/* this guid indicates NDR encoding in a protocol tower */ -const struct ndr_syntax_id ndr_transfer_syntax = { - { 0x8a885d04, 0x1ceb, 0x11c9, {0x9f, 0xe8}, {0x08,0x00,0x2b,0x10,0x48,0x60} }, - 2 -}; - -const struct ndr_syntax_id ndr64_transfer_syntax = { - { 0x71710533, 0xbeba, 0x4937, {0x83, 0x19}, {0xb5,0xdb,0xef,0x9c,0xcc,0x36} }, - 1 -}; - -/* - work out the number of bytes needed to align on a n byte boundary -*/ -_PUBLIC_ size_t ndr_align_size(uint32_t offset, size_t n) -{ - if ((offset & (n-1)) == 0) return 0; - return n - (offset & (n-1)); -} - -/* - initialise a ndr parse structure from a data blob -*/ -_PUBLIC_ struct ndr_pull *ndr_pull_init_blob(const DATA_BLOB *blob, TALLOC_CTX *mem_ctx, struct smb_iconv_convenience *iconv_convenience) -{ - struct ndr_pull *ndr; - - ndr = talloc_zero(mem_ctx, struct ndr_pull); - if (!ndr) return NULL; - ndr->current_mem_ctx = mem_ctx; - - ndr->data = blob->data; - ndr->data_size = blob->length; - ndr->iconv_convenience = talloc_reference(ndr, iconv_convenience); - - return ndr; -} - -/* - advance by 'size' bytes -*/ -_PUBLIC_ enum ndr_err_code ndr_pull_advance(struct ndr_pull *ndr, uint32_t size) -{ - ndr->offset += size; - if (ndr->offset > ndr->data_size) { - return ndr_pull_error(ndr, NDR_ERR_BUFSIZE, - "ndr_pull_advance by %u failed", - size); - } - return NDR_ERR_SUCCESS; -} - -/* - set the parse offset to 'ofs' -*/ -static enum ndr_err_code ndr_pull_set_offset(struct ndr_pull *ndr, uint32_t ofs) -{ - ndr->offset = ofs; - if (ndr->offset > ndr->data_size) { - return ndr_pull_error(ndr, NDR_ERR_BUFSIZE, - "ndr_pull_set_offset %u failed", - ofs); - } - return NDR_ERR_SUCCESS; -} - -/* create a ndr_push structure, ready for some marshalling */ -_PUBLIC_ struct ndr_push *ndr_push_init_ctx(TALLOC_CTX *mem_ctx, struct smb_iconv_convenience *iconv_convenience) -{ - struct ndr_push *ndr; - - ndr = talloc_zero(mem_ctx, struct ndr_push); - if (!ndr) { - return NULL; - } - - ndr->flags = 0; - ndr->alloc_size = NDR_BASE_MARSHALL_SIZE; - ndr->data = talloc_array(ndr, uint8_t, ndr->alloc_size); - if (!ndr->data) { - return NULL; - } - ndr->iconv_convenience = talloc_reference(ndr, iconv_convenience); - - return ndr; -} - -/* return a DATA_BLOB structure for the current ndr_push marshalled data */ -_PUBLIC_ DATA_BLOB ndr_push_blob(struct ndr_push *ndr) -{ - DATA_BLOB blob; - blob = data_blob_const(ndr->data, ndr->offset); - if (ndr->alloc_size > ndr->offset) { - ndr->data[ndr->offset] = 0; - } - return blob; -} - - -/* - expand the available space in the buffer to ndr->offset + extra_size -*/ -_PUBLIC_ enum ndr_err_code ndr_push_expand(struct ndr_push *ndr, uint32_t extra_size) -{ - uint32_t size = extra_size + ndr->offset; - - if (size < ndr->offset) { - /* extra_size overflowed the offset */ - return ndr_push_error(ndr, NDR_ERR_BUFSIZE, "Overflow in push_expand to %u", - size); - } - - if (ndr->alloc_size > size) { - return NDR_ERR_SUCCESS; - } - - ndr->alloc_size += NDR_BASE_MARSHALL_SIZE; - if (size+1 > ndr->alloc_size) { - ndr->alloc_size = size+1; - } - ndr->data = talloc_realloc(ndr, ndr->data, uint8_t, ndr->alloc_size); - if (!ndr->data) { - return ndr_push_error(ndr, NDR_ERR_ALLOC, "Failed to push_expand to %u", - ndr->alloc_size); - } - - return NDR_ERR_SUCCESS; -} - -_PUBLIC_ void ndr_print_debug_helper(struct ndr_print *ndr, const char *format, ...) -{ - va_list ap; - char *s = NULL; - int i; - - va_start(ap, format); - vasprintf(&s, format, ap); - va_end(ap); - - for (i=0;i<ndr->depth;i++) { - DEBUGADD(0,(" ")); - } - - DEBUGADD(0,("%s\n", s)); - free(s); -} - -_PUBLIC_ void ndr_print_string_helper(struct ndr_print *ndr, const char *format, ...) -{ - va_list ap; - int i; - - for (i=0;i<ndr->depth;i++) { - ndr->private_data = talloc_asprintf_append_buffer( - (char *)ndr->private_data, " "); - } - - va_start(ap, format); - ndr->private_data = talloc_vasprintf_append_buffer((char *)ndr->private_data, - format, ap); - va_end(ap); - ndr->private_data = talloc_asprintf_append_buffer((char *)ndr->private_data, - "\n"); -} - -/* - a useful helper function for printing idl structures via DEBUG() -*/ -_PUBLIC_ void ndr_print_debug(ndr_print_fn_t fn, const char *name, void *ptr) -{ - struct ndr_print *ndr; - - ndr = talloc_zero(NULL, struct ndr_print); - if (!ndr) return; - ndr->print = ndr_print_debug_helper; - ndr->depth = 1; - ndr->flags = 0; - fn(ndr, name, ptr); - talloc_free(ndr); -} - -/* - a useful helper function for printing idl unions via DEBUG() -*/ -_PUBLIC_ void ndr_print_union_debug(ndr_print_fn_t fn, const char *name, uint32_t level, void *ptr) -{ - struct ndr_print *ndr; - - ndr = talloc_zero(NULL, struct ndr_print); - if (!ndr) return; - ndr->print = ndr_print_debug_helper; - ndr->depth = 1; - ndr->flags = 0; - ndr_print_set_switch_value(ndr, ptr, level); - fn(ndr, name, ptr); - talloc_free(ndr); -} - -/* - a useful helper function for printing idl function calls via DEBUG() -*/ -_PUBLIC_ void ndr_print_function_debug(ndr_print_function_t fn, const char *name, int flags, void *ptr) -{ - struct ndr_print *ndr; - - ndr = talloc_zero(NULL, struct ndr_print); - if (!ndr) return; - ndr->print = ndr_print_debug_helper; - ndr->depth = 1; - ndr->flags = 0; - fn(ndr, name, flags, ptr); - talloc_free(ndr); -} - -/* - a useful helper function for printing idl structures to a string -*/ -_PUBLIC_ char *ndr_print_struct_string(TALLOC_CTX *mem_ctx, ndr_print_fn_t fn, const char *name, void *ptr) -{ - struct ndr_print *ndr; - char *ret = NULL; - - ndr = talloc_zero(mem_ctx, struct ndr_print); - if (!ndr) return NULL; - ndr->private_data = talloc_strdup(ndr, ""); - if (!ndr->private_data) { - goto failed; - } - ndr->print = ndr_print_string_helper; - ndr->depth = 1; - ndr->flags = 0; - fn(ndr, name, ptr); - ret = talloc_steal(mem_ctx, (char *)ndr->private_data); -failed: - talloc_free(ndr); - return ret; -} - -/* - a useful helper function for printing idl unions to a string -*/ -_PUBLIC_ char *ndr_print_union_string(TALLOC_CTX *mem_ctx, ndr_print_fn_t fn, const char *name, uint32_t level, void *ptr) -{ - struct ndr_print *ndr; - char *ret = NULL; - - ndr = talloc_zero(mem_ctx, struct ndr_print); - if (!ndr) return NULL; - ndr->private_data = talloc_strdup(ndr, ""); - if (!ndr->private_data) { - goto failed; - } - ndr->print = ndr_print_string_helper; - ndr->depth = 1; - ndr->flags = 0; - ndr_print_set_switch_value(ndr, ptr, level); - fn(ndr, name, ptr); - ret = talloc_steal(mem_ctx, (char *)ndr->private_data); -failed: - talloc_free(ndr); - return ret; -} - -/* - a useful helper function for printing idl function calls to a string -*/ -_PUBLIC_ char *ndr_print_function_string(TALLOC_CTX *mem_ctx, - ndr_print_function_t fn, const char *name, - int flags, void *ptr) -{ - struct ndr_print *ndr; - char *ret = NULL; - - ndr = talloc_zero(mem_ctx, struct ndr_print); - if (!ndr) return NULL; - ndr->private_data = talloc_strdup(ndr, ""); - if (!ndr->private_data) { - goto failed; - } - ndr->print = ndr_print_string_helper; - ndr->depth = 1; - ndr->flags = 0; - fn(ndr, name, flags, ptr); - ret = talloc_steal(mem_ctx, (char *)ndr->private_data); -failed: - talloc_free(ndr); - return ret; -} - -_PUBLIC_ void ndr_set_flags(uint32_t *pflags, uint32_t new_flags) -{ - /* the big/little endian flags are inter-dependent */ - if (new_flags & LIBNDR_FLAG_LITTLE_ENDIAN) { - (*pflags) &= ~LIBNDR_FLAG_BIGENDIAN; - } - if (new_flags & LIBNDR_FLAG_BIGENDIAN) { - (*pflags) &= ~LIBNDR_FLAG_LITTLE_ENDIAN; - } - if (new_flags & LIBNDR_FLAG_REMAINING) { - (*pflags) &= ~LIBNDR_ALIGN_FLAGS; - } - if (new_flags & LIBNDR_ALIGN_FLAGS) { - (*pflags) &= ~LIBNDR_FLAG_REMAINING; - } - (*pflags) |= new_flags; -} - -/* - return and possibly log an NDR error -*/ -_PUBLIC_ enum ndr_err_code ndr_pull_error(struct ndr_pull *ndr, - enum ndr_err_code ndr_err, - const char *format, ...) -{ - char *s=NULL; - va_list ap; - - va_start(ap, format); - vasprintf(&s, format, ap); - va_end(ap); - - DEBUG(3,("ndr_pull_error(%u): %s\n", ndr_err, s)); - - free(s); - - return ndr_err; -} - -/* - return and possibly log an NDR error -*/ -_PUBLIC_ enum ndr_err_code ndr_push_error(struct ndr_push *ndr, - enum ndr_err_code ndr_err, - const char *format, ...) -{ - char *s=NULL; - va_list ap; - - va_start(ap, format); - vasprintf(&s, format, ap); - va_end(ap); - - DEBUG(3,("ndr_push_error(%u): %s\n", ndr_err, s)); - - free(s); - - return ndr_err; -} - -/* - handle subcontext buffers, which in midl land are user-marshalled, but - we use magic in pidl to make them easier to cope with -*/ -_PUBLIC_ enum ndr_err_code ndr_pull_subcontext_start(struct ndr_pull *ndr, - struct ndr_pull **_subndr, - size_t header_size, - ssize_t size_is) -{ - struct ndr_pull *subndr; - uint32_t r_content_size; - bool force_le = false; - bool force_be = false; - - switch (header_size) { - case 0: { - uint32_t content_size = ndr->data_size - ndr->offset; - if (size_is >= 0) { - content_size = size_is; - } - r_content_size = content_size; - break; - } - - case 2: { - uint16_t content_size; - NDR_CHECK(ndr_pull_uint16(ndr, NDR_SCALARS, &content_size)); - if (size_is >= 0 && size_is != content_size) { - return ndr_pull_error(ndr, NDR_ERR_SUBCONTEXT, "Bad subcontext (PULL) size_is(%d) mismatch content_size %d", - (int)size_is, (int)content_size); - } - r_content_size = content_size; - break; - } - - case 4: { - uint32_t content_size; - NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &content_size)); - if (size_is >= 0 && size_is != content_size) { - return ndr_pull_error(ndr, NDR_ERR_SUBCONTEXT, "Bad subcontext (PULL) size_is(%d) mismatch content_size %d", - (int)size_is, (int)content_size); - } - r_content_size = content_size; - break; - } - case 0xFFFFFC01: { - /* - * Common Type Header for the Serialization Stream - * See [MS-RPCE] 2.2.6 Type Serialization Version 1 - */ - uint8_t version; - uint8_t drep; - uint16_t hdrlen; - uint32_t filler; - uint32_t content_size; - uint32_t reserved; - - /* version */ - NDR_CHECK(ndr_pull_uint8(ndr, NDR_SCALARS, &version)); - - if (version != 1) { - return ndr_pull_error(ndr, NDR_ERR_SUBCONTEXT, - "Bad subcontext (PULL) Common Type Header version %d != 1", - (int)version); - } - - /* - * 0x10 little endian - * 0x00 big endian - */ - NDR_CHECK(ndr_pull_uint8(ndr, NDR_SCALARS, &drep)); - if (drep == 0x10) { - force_le = true; - } else if (drep == 0x00) { - force_be = true; - } else { - return ndr_pull_error(ndr, NDR_ERR_SUBCONTEXT, - "Bad subcontext (PULL) Common Type Header invalid drep 0x%02X", - (unsigned int)drep); - } - - /* length of the "Private Header for Constructed Type" */ - NDR_CHECK(ndr_pull_uint16(ndr, NDR_SCALARS, &hdrlen)); - if (hdrlen != 8) { - return ndr_pull_error(ndr, NDR_ERR_SUBCONTEXT, - "Bad subcontext (PULL) Common Type Header length %d != 8", - (int)hdrlen); - } - - /* filler should be ignored */ - NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &filler)); - - /* - * Private Header for Constructed Type - */ - /* length - will be updated latter */ - NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &content_size)); - if (size_is >= 0 && size_is != content_size) { - return ndr_pull_error(ndr, NDR_ERR_SUBCONTEXT, "Bad subcontext (PULL) size_is(%d) mismatch content_size %d", - (int)size_is, (int)content_size); - } - /* the content size must be a multiple of 8 */ - if ((content_size % 8) != 0) { - return ndr_pull_error(ndr, NDR_ERR_SUBCONTEXT, - "Bad subcontext (PULL) size_is(%d) not padded to 8 content_size %d", - (int)size_is, (int)content_size); - } - r_content_size = content_size; - - /* reserved */ - NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &reserved)); - break; - } - default: - return ndr_pull_error(ndr, NDR_ERR_SUBCONTEXT, "Bad subcontext (PULL) header_size %d", - (int)header_size); - } - - NDR_PULL_NEED_BYTES(ndr, r_content_size); - - subndr = talloc_zero(ndr, struct ndr_pull); - NDR_ERR_HAVE_NO_MEMORY(subndr); - subndr->flags = ndr->flags; - subndr->current_mem_ctx = ndr->current_mem_ctx; - - subndr->data = ndr->data + ndr->offset; - subndr->offset = 0; - subndr->data_size = r_content_size; - subndr->iconv_convenience = talloc_reference(subndr, ndr->iconv_convenience); - - if (force_le) { - ndr_set_flags(&ndr->flags, LIBNDR_FLAG_LITTLE_ENDIAN); - } else if (force_be) { - ndr_set_flags(&ndr->flags, LIBNDR_FLAG_BIGENDIAN); - } - - *_subndr = subndr; - return NDR_ERR_SUCCESS; -} - -_PUBLIC_ enum ndr_err_code ndr_pull_subcontext_end(struct ndr_pull *ndr, - struct ndr_pull *subndr, - size_t header_size, - ssize_t size_is) -{ - uint32_t advance; - if (size_is >= 0) { - advance = size_is; - } else if (header_size > 0) { - advance = subndr->data_size; - } else { - advance = subndr->offset; - } - NDR_CHECK(ndr_pull_advance(ndr, advance)); - return NDR_ERR_SUCCESS; -} - -_PUBLIC_ enum ndr_err_code ndr_push_subcontext_start(struct ndr_push *ndr, - struct ndr_push **_subndr, - size_t header_size, - ssize_t size_is) -{ - struct ndr_push *subndr; - - subndr = ndr_push_init_ctx(ndr, ndr->iconv_convenience); - NDR_ERR_HAVE_NO_MEMORY(subndr); - subndr->flags = ndr->flags; - - *_subndr = subndr; - return NDR_ERR_SUCCESS; -} - -/* - push a subcontext header -*/ -_PUBLIC_ enum ndr_err_code ndr_push_subcontext_end(struct ndr_push *ndr, - struct ndr_push *subndr, - size_t header_size, - ssize_t size_is) -{ - ssize_t padding_len; - - if (size_is >= 0) { - padding_len = size_is - subndr->offset; - if (padding_len > 0) { - NDR_CHECK(ndr_push_zero(subndr, padding_len)); - } else if (padding_len < 0) { - return ndr_push_error(ndr, NDR_ERR_SUBCONTEXT, "Bad subcontext (PUSH) content_size %d is larger than size_is(%d)", - (int)subndr->offset, (int)size_is); - } - } - - switch (header_size) { - case 0: - break; - - case 2: - NDR_CHECK(ndr_push_uint16(ndr, NDR_SCALARS, subndr->offset)); - break; - - case 4: - NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS, subndr->offset)); - break; - - case 0xFFFFFC01: - /* - * Common Type Header for the Serialization Stream - * See [MS-RPCE] 2.2.6 Type Serialization Version 1 - */ - padding_len = NDR_ROUND(subndr->offset, 8) - subndr->offset; - if (padding_len > 0) { - NDR_CHECK(ndr_push_zero(subndr, padding_len)); - } - - /* version */ - NDR_CHECK(ndr_push_uint8(ndr, NDR_SCALARS, 1)); - - /* - * 0x10 little endian - * 0x00 big endian - */ - NDR_CHECK(ndr_push_uint8(ndr, NDR_SCALARS, NDR_BE(ndr)?0x00:0x10)); - - /* length of the "Private Header for Constructed Type" */ - NDR_CHECK(ndr_push_uint16(ndr, NDR_SCALARS, 8)); - - /* filler */ - NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS, 0xCCCCCCCC)); - - /* - * Private Header for Constructed Type - */ - /* length - will be updated latter */ - NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS, subndr->offset)); - - /* reserved */ - NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS, 0)); - break; - - default: - return ndr_push_error(ndr, NDR_ERR_SUBCONTEXT, "Bad subcontext header size %d", - (int)header_size); - } - - NDR_CHECK(ndr_push_bytes(ndr, subndr->data, subndr->offset)); - return NDR_ERR_SUCCESS; -} - -/* - store a token in the ndr context, for later retrieval -*/ -_PUBLIC_ enum ndr_err_code ndr_token_store(TALLOC_CTX *mem_ctx, - struct ndr_token_list **list, - const void *key, - uint32_t value) -{ - struct ndr_token_list *tok; - tok = talloc(mem_ctx, struct ndr_token_list); - NDR_ERR_HAVE_NO_MEMORY(tok); - tok->key = key; - tok->value = value; - DLIST_ADD((*list), tok); - return NDR_ERR_SUCCESS; -} - -/* - retrieve a token from a ndr context, using cmp_fn to match the tokens -*/ -_PUBLIC_ enum ndr_err_code ndr_token_retrieve_cmp_fn(struct ndr_token_list **list, const void *key, uint32_t *v, - comparison_fn_t _cmp_fn, bool _remove_tok) -{ - struct ndr_token_list *tok; - for (tok=*list;tok;tok=tok->next) { - if (_cmp_fn && _cmp_fn(tok->key,key)==0) goto found; - else if (!_cmp_fn && tok->key == key) goto found; - } - return NDR_ERR_TOKEN; -found: - *v = tok->value; - if (_remove_tok) { - DLIST_REMOVE((*list), tok); - talloc_free(tok); - } - return NDR_ERR_SUCCESS; -} - -/* - retrieve a token from a ndr context -*/ -_PUBLIC_ enum ndr_err_code ndr_token_retrieve(struct ndr_token_list **list, const void *key, uint32_t *v) -{ - return ndr_token_retrieve_cmp_fn(list, key, v, NULL, true); -} - -/* - peek at but don't removed a token from a ndr context -*/ -_PUBLIC_ uint32_t ndr_token_peek(struct ndr_token_list **list, const void *key) -{ - enum ndr_err_code status; - uint32_t v; - - status = ndr_token_retrieve_cmp_fn(list, key, &v, NULL, false); - if (!NDR_ERR_CODE_IS_SUCCESS(status)) { - return 0; - } - - return v; -} - -/* - pull an array size field and add it to the array_size_list token list -*/ -_PUBLIC_ enum ndr_err_code ndr_pull_array_size(struct ndr_pull *ndr, const void *p) -{ - uint32_t size; - NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &size)); - return ndr_token_store(ndr, &ndr->array_size_list, p, size); -} - -/* - get the stored array size field -*/ -_PUBLIC_ uint32_t ndr_get_array_size(struct ndr_pull *ndr, const void *p) -{ - return ndr_token_peek(&ndr->array_size_list, p); -} - -/* - check the stored array size field -*/ -_PUBLIC_ enum ndr_err_code ndr_check_array_size(struct ndr_pull *ndr, void *p, uint32_t size) -{ - uint32_t stored; - stored = ndr_token_peek(&ndr->array_size_list, p); - if (stored != size) { - return ndr_pull_error(ndr, NDR_ERR_ARRAY_SIZE, - "Bad array size - got %u expected %u\n", - stored, size); - } - return NDR_ERR_SUCCESS; -} - -/* - pull an array length field and add it to the array_length_list token list -*/ -_PUBLIC_ enum ndr_err_code ndr_pull_array_length(struct ndr_pull *ndr, const void *p) -{ - uint32_t length, offset; - NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &offset)); - if (offset != 0) { - return ndr_pull_error(ndr, NDR_ERR_ARRAY_SIZE, - "non-zero array offset %u\n", offset); - } - NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &length)); - return ndr_token_store(ndr, &ndr->array_length_list, p, length); -} - -/* - get the stored array length field -*/ -_PUBLIC_ uint32_t ndr_get_array_length(struct ndr_pull *ndr, const void *p) -{ - return ndr_token_peek(&ndr->array_length_list, p); -} - -/* - check the stored array length field -*/ -_PUBLIC_ enum ndr_err_code ndr_check_array_length(struct ndr_pull *ndr, void *p, uint32_t length) -{ - uint32_t stored; - stored = ndr_token_peek(&ndr->array_length_list, p); - if (stored != length) { - return ndr_pull_error(ndr, NDR_ERR_ARRAY_SIZE, - "Bad array length - got %u expected %u\n", - stored, length); - } - return NDR_ERR_SUCCESS; -} - -/* - store a switch value - */ -_PUBLIC_ enum ndr_err_code ndr_push_set_switch_value(struct ndr_push *ndr, const void *p, uint32_t val) -{ - return ndr_token_store(ndr, &ndr->switch_list, p, val); -} - -_PUBLIC_ enum ndr_err_code ndr_pull_set_switch_value(struct ndr_pull *ndr, const void *p, uint32_t val) -{ - return ndr_token_store(ndr, &ndr->switch_list, p, val); -} - -_PUBLIC_ enum ndr_err_code ndr_print_set_switch_value(struct ndr_print *ndr, const void *p, uint32_t val) -{ - return ndr_token_store(ndr, &ndr->switch_list, p, val); -} - -/* - retrieve a switch value - */ -_PUBLIC_ uint32_t ndr_push_get_switch_value(struct ndr_push *ndr, const void *p) -{ - return ndr_token_peek(&ndr->switch_list, p); -} - -_PUBLIC_ uint32_t ndr_pull_get_switch_value(struct ndr_pull *ndr, const void *p) -{ - return ndr_token_peek(&ndr->switch_list, p); -} - -_PUBLIC_ uint32_t ndr_print_get_switch_value(struct ndr_print *ndr, const void *p) -{ - return ndr_token_peek(&ndr->switch_list, p); -} - -/* - pull a struct from a blob using NDR -*/ -_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, - ndr_pull_flags_fn_t fn) -{ - struct ndr_pull *ndr; - ndr = ndr_pull_init_blob(blob, mem_ctx, iconv_convenience); - NDR_ERR_HAVE_NO_MEMORY(ndr); - NDR_CHECK(fn(ndr, NDR_SCALARS|NDR_BUFFERS, p)); - return NDR_ERR_SUCCESS; -} - -/* - pull a struct from a blob using NDR - failing if all bytes are not consumed -*/ -_PUBLIC_ enum ndr_err_code ndr_pull_struct_blob_all(const DATA_BLOB *blob, TALLOC_CTX *mem_ctx, - struct smb_iconv_convenience *iconv_convenience, - void *p, ndr_pull_flags_fn_t fn) -{ - struct ndr_pull *ndr; - ndr = ndr_pull_init_blob(blob, mem_ctx, iconv_convenience); - NDR_ERR_HAVE_NO_MEMORY(ndr); - NDR_CHECK(fn(ndr, NDR_SCALARS|NDR_BUFFERS, p)); - if (ndr->offset < ndr->data_size) { - return ndr_pull_error(ndr, NDR_ERR_UNREAD_BYTES, - "not all bytes consumed ofs[%u] size[%u]", - ndr->offset, ndr->data_size); - } - return NDR_ERR_SUCCESS; -} - -/* - pull a union from a blob using NDR, given the union discriminator -*/ -_PUBLIC_ enum ndr_err_code ndr_pull_union_blob(const DATA_BLOB *blob, TALLOC_CTX *mem_ctx, - struct smb_iconv_convenience *iconv_convenience, void *p, - uint32_t level, ndr_pull_flags_fn_t fn) -{ - struct ndr_pull *ndr; - ndr = ndr_pull_init_blob(blob, mem_ctx, iconv_convenience); - NDR_ERR_HAVE_NO_MEMORY(ndr); - NDR_CHECK(ndr_pull_set_switch_value(ndr, p, level)); - NDR_CHECK(fn(ndr, NDR_SCALARS|NDR_BUFFERS, p)); - return NDR_ERR_SUCCESS; -} - -/* - pull a union from a blob using NDR, given the union discriminator, - failing if all bytes are not consumed -*/ -_PUBLIC_ enum ndr_err_code ndr_pull_union_blob_all(const DATA_BLOB *blob, TALLOC_CTX *mem_ctx, - struct smb_iconv_convenience *iconv_convenience, void *p, - uint32_t level, ndr_pull_flags_fn_t fn) -{ - struct ndr_pull *ndr; - ndr = ndr_pull_init_blob(blob, mem_ctx, iconv_convenience); - NDR_ERR_HAVE_NO_MEMORY(ndr); - NDR_CHECK(ndr_pull_set_switch_value(ndr, p, level)); - NDR_CHECK(fn(ndr, NDR_SCALARS|NDR_BUFFERS, p)); - if (ndr->offset < ndr->data_size) { - return ndr_pull_error(ndr, NDR_ERR_UNREAD_BYTES, - "not all bytes consumed ofs[%u] size[%u]", - ndr->offset, ndr->data_size); - } - return NDR_ERR_SUCCESS; -} - -/* - push a struct to a blob using NDR -*/ -_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) -{ - struct ndr_push *ndr; - ndr = ndr_push_init_ctx(mem_ctx, iconv_convenience); - NDR_ERR_HAVE_NO_MEMORY(ndr); - - NDR_CHECK(fn(ndr, NDR_SCALARS|NDR_BUFFERS, p)); - - *blob = ndr_push_blob(ndr); - talloc_steal(mem_ctx, blob->data); - talloc_free(ndr); - - return NDR_ERR_SUCCESS; -} - -/* - push a union to a blob using NDR -*/ -_PUBLIC_ enum ndr_err_code ndr_push_union_blob(DATA_BLOB *blob, TALLOC_CTX *mem_ctx, struct smb_iconv_convenience *iconv_convenience, void *p, - uint32_t level, ndr_push_flags_fn_t fn) -{ - struct ndr_push *ndr; - ndr = ndr_push_init_ctx(mem_ctx, iconv_convenience); - NDR_ERR_HAVE_NO_MEMORY(ndr); - - NDR_CHECK(ndr_push_set_switch_value(ndr, p, level)); - NDR_CHECK(fn(ndr, NDR_SCALARS|NDR_BUFFERS, p)); - - *blob = ndr_push_blob(ndr); - talloc_steal(mem_ctx, blob->data); - talloc_free(ndr); - - return NDR_ERR_SUCCESS; -} - -/* - generic ndr_size_*() handler for structures -*/ -_PUBLIC_ size_t ndr_size_struct(const void *p, int flags, ndr_push_flags_fn_t push) -{ - struct ndr_push *ndr; - enum ndr_err_code status; - size_t ret; - - /* avoid recursion */ - if (flags & LIBNDR_FLAG_NO_NDR_SIZE) return 0; - - ndr = ndr_push_init_ctx(NULL, lp_iconv_convenience(global_loadparm)); - if (!ndr) return 0; - ndr->flags |= flags | LIBNDR_FLAG_NO_NDR_SIZE; - status = push(ndr, NDR_SCALARS|NDR_BUFFERS, discard_const(p)); - if (!NDR_ERR_CODE_IS_SUCCESS(status)) { - talloc_free(ndr); - return 0; - } - ret = ndr->offset; - talloc_free(ndr); - return ret; -} - -/* - generic ndr_size_*() handler for unions -*/ -_PUBLIC_ size_t ndr_size_union(const void *p, int flags, uint32_t level, ndr_push_flags_fn_t push) -{ - struct ndr_push *ndr; - enum ndr_err_code status; - size_t ret; - - /* avoid recursion */ - if (flags & LIBNDR_FLAG_NO_NDR_SIZE) return 0; - - ndr = ndr_push_init_ctx(NULL, lp_iconv_convenience(global_loadparm)); - if (!ndr) return 0; - ndr->flags |= flags | LIBNDR_FLAG_NO_NDR_SIZE; - - status = ndr_push_set_switch_value(ndr, p, level); - if (!NDR_ERR_CODE_IS_SUCCESS(status)) { - talloc_free(ndr); - return 0; - } - status = push(ndr, NDR_SCALARS|NDR_BUFFERS, p); - if (!NDR_ERR_CODE_IS_SUCCESS(status)) { - talloc_free(ndr); - return 0; - } - ret = ndr->offset; - talloc_free(ndr); - return ret; -} - -/* - get the current base for relative pointers for the push -*/ -_PUBLIC_ uint32_t ndr_push_get_relative_base_offset(struct ndr_push *ndr) -{ - return ndr->relative_base_offset; -} - -/* - restore the old base for relative pointers for the push -*/ -_PUBLIC_ void ndr_push_restore_relative_base_offset(struct ndr_push *ndr, uint32_t offset) -{ - ndr->relative_base_offset = offset; -} - -/* - setup the current base for relative pointers for the push - called in the NDR_SCALAR stage -*/ -_PUBLIC_ enum ndr_err_code ndr_push_setup_relative_base_offset1(struct ndr_push *ndr, const void *p, uint32_t offset) -{ - ndr->relative_base_offset = offset; - return ndr_token_store(ndr, &ndr->relative_base_list, p, offset); -} - -/* - setup the current base for relative pointers for the push - called in the NDR_BUFFERS stage -*/ -_PUBLIC_ enum ndr_err_code ndr_push_setup_relative_base_offset2(struct ndr_push *ndr, const void *p) -{ - return ndr_token_retrieve(&ndr->relative_base_list, p, &ndr->relative_base_offset); -} - -/* - push a relative object - stage1 - this is called during SCALARS processing -*/ -_PUBLIC_ enum ndr_err_code ndr_push_relative_ptr1(struct ndr_push *ndr, const void *p) -{ - if (p == NULL) { - NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS, 0)); - return NDR_ERR_SUCCESS; - } - NDR_CHECK(ndr_push_align(ndr, 4)); - NDR_CHECK(ndr_token_store(ndr, &ndr->relative_list, p, ndr->offset)); - return ndr_push_uint32(ndr, NDR_SCALARS, 0xFFFFFFFF); -} - -/* - push a relative object - stage2 - this is called during buffers processing -*/ -_PUBLIC_ enum ndr_err_code ndr_push_relative_ptr2(struct ndr_push *ndr, const void *p) -{ - uint32_t save_offset; - uint32_t ptr_offset = 0xFFFFFFFF; - if (p == NULL) { - return NDR_ERR_SUCCESS; - } - save_offset = ndr->offset; - NDR_CHECK(ndr_token_retrieve(&ndr->relative_list, p, &ptr_offset)); - if (ptr_offset > ndr->offset) { - return ndr_push_error(ndr, NDR_ERR_BUFSIZE, - "ndr_push_relative_ptr2 ptr_offset(%u) > ndr->offset(%u)", - ptr_offset, ndr->offset); - } - ndr->offset = ptr_offset; - if (save_offset < ndr->relative_base_offset) { - return ndr_push_error(ndr, NDR_ERR_BUFSIZE, - "ndr_push_relative_ptr2 save_offset(%u) < ndr->relative_base_offset(%u)", - save_offset, ndr->relative_base_offset); - } - NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS, save_offset - ndr->relative_base_offset)); - ndr->offset = save_offset; - return NDR_ERR_SUCCESS; -} - -/* - get the current base for relative pointers for the pull -*/ -_PUBLIC_ uint32_t ndr_pull_get_relative_base_offset(struct ndr_pull *ndr) -{ - return ndr->relative_base_offset; -} - -/* - restore the old base for relative pointers for the pull -*/ -_PUBLIC_ void ndr_pull_restore_relative_base_offset(struct ndr_pull *ndr, uint32_t offset) -{ - ndr->relative_base_offset = offset; -} - -/* - setup the current base for relative pointers for the pull - called in the NDR_SCALAR stage -*/ -_PUBLIC_ enum ndr_err_code ndr_pull_setup_relative_base_offset1(struct ndr_pull *ndr, const void *p, uint32_t offset) -{ - ndr->relative_base_offset = offset; - return ndr_token_store(ndr, &ndr->relative_base_list, p, offset); -} - -/* - setup the current base for relative pointers for the pull - called in the NDR_BUFFERS stage -*/ -_PUBLIC_ enum ndr_err_code ndr_pull_setup_relative_base_offset2(struct ndr_pull *ndr, const void *p) -{ - return ndr_token_retrieve(&ndr->relative_base_list, p, &ndr->relative_base_offset); -} - -/* - pull a relative object - stage1 - called during SCALARS processing -*/ -_PUBLIC_ enum ndr_err_code ndr_pull_relative_ptr1(struct ndr_pull *ndr, const void *p, uint32_t rel_offset) -{ - rel_offset += ndr->relative_base_offset; - if (rel_offset > ndr->data_size) { - return ndr_pull_error(ndr, NDR_ERR_BUFSIZE, - "ndr_pull_relative_ptr1 rel_offset(%u) > ndr->data_size(%u)", - rel_offset, ndr->data_size); - } - return ndr_token_store(ndr, &ndr->relative_list, p, rel_offset); -} - -/* - pull a relative object - stage2 - called during BUFFERS processing -*/ -_PUBLIC_ enum ndr_err_code ndr_pull_relative_ptr2(struct ndr_pull *ndr, const void *p) -{ - uint32_t rel_offset; - NDR_CHECK(ndr_token_retrieve(&ndr->relative_list, p, &rel_offset)); - return ndr_pull_set_offset(ndr, rel_offset); -} |