+++ /dev/null
-/*
- 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"
-
-#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, ...) _PRINTF_ATTRIBUTE(2,3)
-{
- va_list ap;
- char *s = NULL;
- int i, ret;
-
- va_start(ap, format);
- ret = vasprintf(&s, format, ap);
- va_end(ap);
-
- if (ret == -1) {
- return;
- }
-
- 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, ...) _PRINTF_ATTRIBUTE(3,4)
-{
- char *s=NULL;
- va_list ap;
- int ret;
-
- va_start(ap, format);
- ret = vasprintf(&s, format, ap);
- va_end(ap);
-
- if (ret == -1) {
- return NDR_ERR_ALLOC;
- }
-
- DEBUG(1,("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, ...) _PRINTF_ATTRIBUTE(3,4)
-{
- char *s=NULL;
- va_list ap;
- int ret;
-
- va_start(ap, format);
- ret = vasprintf(&s, format, ap);
- va_end(ap);
-
- if (ret == -1) {
- return NDR_ERR_ALLOC;
- }
-
- DEBUG(1,("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, NULL);
- 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, NULL);
- 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);
-}
git.samba.org / metze / samba / wip.git / commitdiff