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samba-mirror/librpc/ndr/ndr_negoex.c
Andrew Bartlett 3bc680c1e3 pidl: Avoid leaving array_size NDR tokens around 
In many cases these can and should be consumed as soon as
they are used.

This is not a complete fix, we don't clean up the array_size
token after using it split between an NDR_SCALARS and
an NDR_BUFFERS pass, but it is much better than it was
and helps the winbind case with a large number of groups
(eg 100,000) as otherwise we hit the 65535 NDR token limit.

(This is an arbitary Samba-only limit to avoid DoS conditions)

BUG: https://bugzilla.samba.org/show_bug.cgi?id=14710

Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
2021-06-02 03:56:36 +00:00

522 lines
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/*
Unix SMB/CIFS implementation.
routines for marshalling/unmarshalling special NEGOEX structures
Copyright (C) Stefan Metzmacher 2015
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/>.
*/
#include "includes.h"
#include "librpc/gen_ndr/ndr_negoex.h"
#include "librpc/gen_ndr/ndr_misc.h"
#include "librpc/ndr/ndr_negoex.h"
void ndr_print_negoex_BYTE_VECTOR(struct ndr_print *ndr, const char *name, const struct negoex_BYTE_VECTOR *r)
{
ndr_print_struct(ndr, name, "negoex_BYTE_VECTOR");
if (r == NULL) { ndr_print_null(ndr); return; }
ndr->depth++;
ndr_print_DATA_BLOB(ndr, "blob", r->blob);
ndr->depth--;
}
enum ndr_err_code ndr_push_negoex_BYTE_VECTOR(struct ndr_push *ndr, int ndr_flags, const struct negoex_BYTE_VECTOR *r)
{
NDR_PUSH_CHECK_FLAGS(ndr, ndr_flags);
if (ndr_flags & NDR_SCALARS) {
NDR_CHECK(ndr_push_align(ndr, 5));
NDR_CHECK(ndr_push_relative_ptr1(ndr, r->blob.data));
NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS, r->blob.length));
NDR_CHECK(ndr_push_trailer_align(ndr, 5));
}
if (ndr_flags & NDR_BUFFERS) {
if (r->blob.data) {
NDR_CHECK(ndr_push_relative_ptr2_start(ndr, r->blob.data));
#if 0
NDR_CHECK(ndr_push_uint3264(ndr, NDR_SCALARS, r->blob.length));
#endif
NDR_CHECK(ndr_push_array_uint8(ndr, NDR_SCALARS, r->blob.data, r->blob.length));
NDR_CHECK(ndr_push_relative_ptr2_end(ndr, r->blob.data));
}
}
return NDR_ERR_SUCCESS;
}
enum ndr_err_code ndr_pull_negoex_BYTE_VECTOR(struct ndr_pull *ndr, int ndr_flags, struct negoex_BYTE_VECTOR *r)
{
uint32_t _ptr_data;
uint32_t size_data_1 = 0;
TALLOC_CTX *_mem_save_data_0 = NULL;
NDR_PULL_CHECK_FLAGS(ndr, ndr_flags);
r->_dummy = NULL;
if (ndr_flags & NDR_SCALARS) {
NDR_CHECK(ndr_pull_align(ndr, 5));
NDR_CHECK(ndr_pull_generic_ptr(ndr, &_ptr_data));
if (_ptr_data) {
NDR_PULL_ALLOC(ndr, r->blob.data);
NDR_CHECK(ndr_pull_relative_ptr1(ndr, r->blob.data, _ptr_data));
} else {
r->blob.data = NULL;
}
r->blob.length = 0;
NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &size_data_1));
r->_length = size_data_1;
NDR_CHECK(ndr_pull_trailer_align(ndr, 5));
}
if (ndr_flags & NDR_BUFFERS) {
if (r->blob.data) {
uint32_t _relative_save_offset;
_relative_save_offset = ndr->offset;
NDR_CHECK(ndr_pull_relative_ptr2(ndr, r->blob.data));
_mem_save_data_0 = NDR_PULL_GET_MEM_CTX(ndr);
NDR_PULL_SET_MEM_CTX(ndr, r->blob.data, 0);
#if 0
NDR_CHECK(ndr_pull_array_size(ndr, &r->blob.data));
size_data_1 = ndr_get_array_size(ndr, &r->blob.data);
#else
size_data_1 = r->_length;
#endif
NDR_PULL_ALLOC_N(ndr, r->blob.data, size_data_1);
NDR_CHECK(ndr_pull_array_uint8(ndr, NDR_SCALARS, r->blob.data, size_data_1));
r->blob.length = size_data_1;
NDR_PULL_SET_MEM_CTX(ndr, _mem_save_data_0, 0);
if (ndr->offset > ndr->relative_highest_offset) {
ndr->relative_highest_offset = ndr->offset;
}
ndr->offset = _relative_save_offset;
}
#if 0
if (r->blob.data) {
NDR_CHECK(ndr_check_steal_array_size(ndr, (void*)&r->blob.data, r->blob.length));
}
#endif
}
return NDR_ERR_SUCCESS;
}
enum ndr_err_code ndr_push_negoex_AUTH_SCHEME_VECTOR(struct ndr_push *ndr, int ndr_flags, const struct negoex_AUTH_SCHEME_VECTOR *r)
{
uint32_t cntr_array_1;
NDR_PUSH_CHECK_FLAGS(ndr, ndr_flags);
if (ndr_flags & NDR_SCALARS) {
NDR_CHECK(ndr_push_align(ndr, 5));
NDR_CHECK(ndr_push_relative_ptr1(ndr, r->array));
NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS, r->count));
NDR_CHECK(ndr_push_trailer_align(ndr, 5));
}
if (ndr_flags & NDR_BUFFERS) {
if (r->array) {
NDR_CHECK(ndr_push_relative_ptr2_start(ndr, r->array));
#if 0
NDR_CHECK(ndr_push_uint3264(ndr, NDR_SCALARS, r->count));
#endif
for (cntr_array_1 = 0; cntr_array_1 < (r->count); cntr_array_1++) {
NDR_CHECK(ndr_push_negoex_AUTH_SCHEME(ndr, NDR_SCALARS, &r->array[cntr_array_1]));
}
NDR_CHECK(ndr_push_relative_ptr2_end(ndr, r->array));
}
}
return NDR_ERR_SUCCESS;
}
enum ndr_err_code ndr_pull_negoex_AUTH_SCHEME_VECTOR(struct ndr_pull *ndr, int ndr_flags, struct negoex_AUTH_SCHEME_VECTOR *r)
{
uint32_t _ptr_array;
uint32_t size_array_1 = 0;
uint32_t cntr_array_1;
TALLOC_CTX *_mem_save_array_0 = NULL;
TALLOC_CTX *_mem_save_array_1 = NULL;
NDR_PULL_CHECK_FLAGS(ndr, ndr_flags);
if (ndr_flags & NDR_SCALARS) {
NDR_CHECK(ndr_pull_align(ndr, 5));
NDR_CHECK(ndr_pull_generic_ptr(ndr, &_ptr_array));
if (_ptr_array) {
NDR_PULL_ALLOC(ndr, r->array);
NDR_CHECK(ndr_pull_relative_ptr1(ndr, r->array, _ptr_array));
} else {
r->array = NULL;
}
NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &r->count));
NDR_CHECK(ndr_pull_trailer_align(ndr, 5));
}
if (ndr_flags & NDR_BUFFERS) {
if (r->array) {
uint32_t _relative_save_offset;
_relative_save_offset = ndr->offset;
NDR_CHECK(ndr_pull_relative_ptr2(ndr, r->array));
_mem_save_array_0 = NDR_PULL_GET_MEM_CTX(ndr);
NDR_PULL_SET_MEM_CTX(ndr, r->array, 0);
#if 0
NDR_CHECK(ndr_pull_array_size(ndr, &r->array));
size_array_1 = ndr_get_array_size(ndr, &r->array);
#else
size_array_1 = r->count;
#endif
NDR_PULL_ALLOC_N(ndr, r->array, size_array_1);
_mem_save_array_1 = NDR_PULL_GET_MEM_CTX(ndr);
NDR_PULL_SET_MEM_CTX(ndr, r->array, 0);
for (cntr_array_1 = 0; cntr_array_1 < (size_array_1); cntr_array_1++) {
NDR_CHECK(ndr_pull_negoex_AUTH_SCHEME(ndr, NDR_SCALARS, &r->array[cntr_array_1]));
}
NDR_PULL_SET_MEM_CTX(ndr, _mem_save_array_1, 0);
NDR_PULL_SET_MEM_CTX(ndr, _mem_save_array_0, 0);
if (ndr->offset > ndr->relative_highest_offset) {
ndr->relative_highest_offset = ndr->offset;
}
ndr->offset = _relative_save_offset;
}
#if 0
if (r->array) {
NDR_CHECK(ndr_check_steal_array_size(ndr, (void*)&r->array, r->count));
}
#endif
}
return NDR_ERR_SUCCESS;
}
enum ndr_err_code ndr_push_negoex_EXTENSION_VECTOR(struct ndr_push *ndr, int ndr_flags, const struct negoex_EXTENSION_VECTOR *r)
{
uint32_t cntr_array_1;
NDR_PUSH_CHECK_FLAGS(ndr, ndr_flags);
if (ndr_flags & NDR_SCALARS) {
NDR_CHECK(ndr_push_align(ndr, 5));
NDR_CHECK(ndr_push_relative_ptr1(ndr, r->array));
NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS, r->count));
NDR_CHECK(ndr_push_trailer_align(ndr, 5));
}
if (ndr_flags & NDR_BUFFERS) {
if (r->array) {
NDR_CHECK(ndr_push_relative_ptr2_start(ndr, r->array));
#if 0
NDR_CHECK(ndr_push_uint3264(ndr, NDR_SCALARS, r->count));
#endif
for (cntr_array_1 = 0; cntr_array_1 < (r->count); cntr_array_1++) {
NDR_CHECK(ndr_push_negoex_EXTENSION(ndr, NDR_SCALARS, &r->array[cntr_array_1]));
}
for (cntr_array_1 = 0; cntr_array_1 < (r->count); cntr_array_1++) {
NDR_CHECK(ndr_push_negoex_EXTENSION(ndr, NDR_BUFFERS, &r->array[cntr_array_1]));
}
NDR_CHECK(ndr_push_relative_ptr2_end(ndr, r->array));
}
}
return NDR_ERR_SUCCESS;
}
enum ndr_err_code ndr_pull_negoex_EXTENSION_VECTOR(struct ndr_pull *ndr, int ndr_flags, struct negoex_EXTENSION_VECTOR *r)
{
uint32_t _ptr_array;
uint32_t size_array_1 = 0;
uint32_t cntr_array_1;
TALLOC_CTX *_mem_save_array_0 = NULL;
TALLOC_CTX *_mem_save_array_1 = NULL;
NDR_PULL_CHECK_FLAGS(ndr, ndr_flags);
if (ndr_flags & NDR_SCALARS) {
NDR_CHECK(ndr_pull_align(ndr, 5));
NDR_CHECK(ndr_pull_generic_ptr(ndr, &_ptr_array));
if (_ptr_array) {
NDR_PULL_ALLOC(ndr, r->array);
NDR_CHECK(ndr_pull_relative_ptr1(ndr, r->array, _ptr_array));
} else {
r->array = NULL;
}
NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &r->count));
NDR_CHECK(ndr_pull_trailer_align(ndr, 5));
}
if (ndr_flags & NDR_BUFFERS) {
if (r->array) {
uint32_t _relative_save_offset;
_relative_save_offset = ndr->offset;
NDR_CHECK(ndr_pull_relative_ptr2(ndr, r->array));
_mem_save_array_0 = NDR_PULL_GET_MEM_CTX(ndr);
NDR_PULL_SET_MEM_CTX(ndr, r->array, 0);
#if 0
NDR_CHECK(ndr_pull_array_size(ndr, &r->array));
size_array_1 = ndr_get_array_size(ndr, &r->array);
#else
size_array_1 = r->count;
#endif
NDR_PULL_ALLOC_N(ndr, r->array, size_array_1);
_mem_save_array_1 = NDR_PULL_GET_MEM_CTX(ndr);
NDR_PULL_SET_MEM_CTX(ndr, r->array, 0);
for (cntr_array_1 = 0; cntr_array_1 < (size_array_1); cntr_array_1++) {
NDR_CHECK(ndr_pull_negoex_EXTENSION(ndr, NDR_SCALARS, &r->array[cntr_array_1]));
}
for (cntr_array_1 = 0; cntr_array_1 < (size_array_1); cntr_array_1++) {
NDR_CHECK(ndr_pull_negoex_EXTENSION(ndr, NDR_BUFFERS, &r->array[cntr_array_1]));
}
NDR_PULL_SET_MEM_CTX(ndr, _mem_save_array_1, 0);
NDR_PULL_SET_MEM_CTX(ndr, _mem_save_array_0, 0);
if (ndr->offset > ndr->relative_highest_offset) {
ndr->relative_highest_offset = ndr->offset;
}
ndr->offset = _relative_save_offset;
}
#if 0
if (r->array) {
NDR_CHECK(ndr_check_steal_array_size(ndr, (void*)&r->array, r->count));
}
#endif
}
return NDR_ERR_SUCCESS;
}
enum ndr_err_code ndr_push_negoex_ALERT_VECTOR(struct ndr_push *ndr, int ndr_flags, const struct negoex_ALERT_VECTOR *r)
{
uint32_t cntr_array_1;
NDR_PUSH_CHECK_FLAGS(ndr, ndr_flags);
if (ndr_flags & NDR_SCALARS) {
NDR_CHECK(ndr_push_align(ndr, 5));
NDR_CHECK(ndr_push_relative_ptr1(ndr, r->array));
NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS, r->count));
NDR_CHECK(ndr_push_trailer_align(ndr, 5));
}
if (ndr_flags & NDR_BUFFERS) {
if (r->array) {
NDR_CHECK(ndr_push_relative_ptr2_start(ndr, r->array));
#if 0
NDR_CHECK(ndr_push_uint3264(ndr, NDR_SCALARS, r->count));
#endif
for (cntr_array_1 = 0; cntr_array_1 < (r->count); cntr_array_1++) {
NDR_CHECK(ndr_push_negoex_ALERT(ndr, NDR_SCALARS, &r->array[cntr_array_1]));
}
for (cntr_array_1 = 0; cntr_array_1 < (r->count); cntr_array_1++) {
NDR_CHECK(ndr_push_negoex_ALERT(ndr, NDR_BUFFERS, &r->array[cntr_array_1]));
}
NDR_CHECK(ndr_push_relative_ptr2_end(ndr, r->array));
}
}
return NDR_ERR_SUCCESS;
}
enum ndr_err_code ndr_pull_negoex_ALERT_VECTOR(struct ndr_pull *ndr, int ndr_flags, struct negoex_ALERT_VECTOR *r)
{
uint32_t _ptr_array;
uint32_t size_array_1 = 0;
uint32_t cntr_array_1;
TALLOC_CTX *_mem_save_array_0 = NULL;
TALLOC_CTX *_mem_save_array_1 = NULL;
NDR_PULL_CHECK_FLAGS(ndr, ndr_flags);
if (ndr_flags & NDR_SCALARS) {
NDR_CHECK(ndr_pull_align(ndr, 5));
NDR_CHECK(ndr_pull_generic_ptr(ndr, &_ptr_array));
if (_ptr_array) {
NDR_PULL_ALLOC(ndr, r->array);
NDR_CHECK(ndr_pull_relative_ptr1(ndr, r->array, _ptr_array));
} else {
r->array = NULL;
}
NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &r->count));
NDR_CHECK(ndr_pull_trailer_align(ndr, 5));
}
if (ndr_flags & NDR_BUFFERS) {
if (r->array) {
uint32_t _relative_save_offset;
_relative_save_offset = ndr->offset;
NDR_CHECK(ndr_pull_relative_ptr2(ndr, r->array));
_mem_save_array_0 = NDR_PULL_GET_MEM_CTX(ndr);
NDR_PULL_SET_MEM_CTX(ndr, r->array, 0);
#if 0
NDR_CHECK(ndr_pull_array_size(ndr, &r->array));
size_array_1 = ndr_get_array_size(ndr, &r->array);
#else
size_array_1 = r->count;
#endif
NDR_PULL_ALLOC_N(ndr, r->array, size_array_1);
_mem_save_array_1 = NDR_PULL_GET_MEM_CTX(ndr);
NDR_PULL_SET_MEM_CTX(ndr, r->array, 0);
for (cntr_array_1 = 0; cntr_array_1 < (size_array_1); cntr_array_1++) {
NDR_CHECK(ndr_pull_negoex_ALERT(ndr, NDR_SCALARS, &r->array[cntr_array_1]));
}
for (cntr_array_1 = 0; cntr_array_1 < (size_array_1); cntr_array_1++) {
NDR_CHECK(ndr_pull_negoex_ALERT(ndr, NDR_BUFFERS, &r->array[cntr_array_1]));
}
NDR_PULL_SET_MEM_CTX(ndr, _mem_save_array_1, 0);
NDR_PULL_SET_MEM_CTX(ndr, _mem_save_array_0, 0);
if (ndr->offset > ndr->relative_highest_offset) {
ndr->relative_highest_offset = ndr->offset;
}
ndr->offset = _relative_save_offset;
}
#if 0
if (r->array) {
NDR_CHECK(ndr_check_steal_array_size(ndr, (void*)&r->array, r->count));
}
#endif
}
return NDR_ERR_SUCCESS;
}
size_t ndr_negoex_MESSAGE_header_length(const struct negoex_MESSAGE *r)
{
size_t size = 0;
size += 8; /* signature */
size += 4; /* type */
size += 4; /* sequence_number */
size += 4; /* header_length */
size += 4; /* message_length */
size += 16; /* conversation_id */
switch (r->type) {
case NEGOEX_MESSAGE_TYPE_INITIATOR_NEGO:
case NEGOEX_MESSAGE_TYPE_ACCEPTOR_NEGO:
size += 32; /* random */
size += 8; /* protocol_version */
size += 8; /* auth_schemes */
size += 8; /* extensions */
break;
case NEGOEX_MESSAGE_TYPE_INITIATOR_META_DATA:
case NEGOEX_MESSAGE_TYPE_ACCEPTOR_META_DATA:
case NEGOEX_MESSAGE_TYPE_CHALLENGE:
case NEGOEX_MESSAGE_TYPE_AP_REQUEST:
size += 16; /* auth_scheme */
size += 8; /* exchange */
break;
case NEGOEX_MESSAGE_TYPE_VERIFY:
size += 16; /* auth_scheme */
size += 4; /* checksum.header_length */
size += 4; /* checksum.scheme */
size += 4; /* checksum.type */
size += 8; /* checksum.value */
break;
case NEGOEX_MESSAGE_TYPE_ALERT:
size += 16; /* auth_scheme */
size += 4; /* status */
size += 8; /* alerts */
break;
}
return size;
}
enum ndr_err_code ndr_pull_negoex_MESSAGE(struct ndr_pull *ndr, int ndr_flags, struct negoex_MESSAGE *r)
{
uint32_t _save_relative_base_offset = ndr_pull_get_relative_base_offset(ndr);
uint32_t size_signature_0 = 0;
uint32_t start_data_size = ndr->data_size;
uint32_t saved_offset = 0;
NDR_PULL_CHECK_FLAGS(ndr, ndr_flags);
if (ndr_flags & NDR_SCALARS) {
NDR_CHECK(ndr_pull_align(ndr, 5));
NDR_CHECK(ndr_pull_setup_relative_base_offset1(ndr, r, ndr->offset));
size_signature_0 = 8;
NDR_CHECK(ndr_pull_charset(ndr, NDR_SCALARS, &r->signature, size_signature_0, sizeof(uint8_t), CH_DOS));
NDR_CHECK(ndr_pull_negoex_MESSAGE_TYPE(ndr, NDR_SCALARS, &r->type));
NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &r->sequence_number));
NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &r->header_length));
NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &r->message_length));
saved_offset = ndr->offset;
ndr->offset = ndr->relative_base_offset;
NDR_PULL_NEED_BYTES(ndr, r->message_length);
ndr->data_size = ndr->offset + r->message_length;
ndr->offset = saved_offset;
NDR_CHECK(ndr_pull_GUID(ndr, NDR_SCALARS, &r->conversation_id));
NDR_CHECK(ndr_pull_set_switch_value(ndr, &r->p, r->type));
NDR_CHECK(ndr_pull_negoex_PAYLOAD(ndr, NDR_SCALARS, &r->p));
NDR_CHECK(ndr_pull_trailer_align(ndr, 5));
ndr->offset = ndr->data_size;
ndr->data_size = start_data_size;
}
if (ndr_flags & NDR_BUFFERS) {
NDR_CHECK(ndr_pull_setup_relative_base_offset2(ndr, r));
saved_offset = ndr->offset;
ndr->offset = ndr->relative_base_offset;
NDR_PULL_NEED_BYTES(ndr, r->message_length);
ndr->data_size = ndr->offset + r->message_length;
ndr->offset = saved_offset;
NDR_CHECK(ndr_pull_set_switch_value(ndr, &r->p, r->type));
NDR_CHECK(ndr_pull_negoex_PAYLOAD(ndr, NDR_BUFFERS, &r->p));
ndr->offset = ndr->data_size;
ndr->data_size = start_data_size;
}
ndr_pull_restore_relative_base_offset(ndr, _save_relative_base_offset);
return NDR_ERR_SUCCESS;
}
enum ndr_err_code ndr_push_negoex_MESSAGE_ARRAY(struct ndr_push *ndr, int ndr_flags, const struct negoex_MESSAGE_ARRAY *r)
{
uint32_t cntr_messages_0;
{
uint32_t _flags_save_STRUCT = ndr->flags;
ndr_set_flags(&ndr->flags, LIBNDR_FLAG_NOALIGN);
NDR_PUSH_CHECK_FLAGS(ndr, ndr_flags);
if (ndr_flags & NDR_SCALARS) {
NDR_CHECK(ndr_push_align(ndr, 5));
for (cntr_messages_0 = 0; cntr_messages_0 < (r->count); cntr_messages_0++) {
NDR_CHECK(ndr_push_negoex_MESSAGE(ndr, NDR_SCALARS|NDR_BUFFERS, &r->messages[cntr_messages_0]));
}
NDR_CHECK(ndr_push_trailer_align(ndr, 5));
}
ndr->flags = _flags_save_STRUCT;
}
return NDR_ERR_SUCCESS;
}
enum ndr_err_code ndr_pull_negoex_MESSAGE_ARRAY(struct ndr_pull *ndr, int ndr_flags, struct negoex_MESSAGE_ARRAY *r)
{
uint32_t size_messages_0 = 0;
uint32_t cntr_messages_0;
TALLOC_CTX *_mem_save_messages_0 = NULL;
{
uint32_t _flags_save_STRUCT = ndr->flags;
ndr_set_flags(&ndr->flags, LIBNDR_FLAG_NOALIGN);
NDR_PULL_CHECK_FLAGS(ndr, ndr_flags);
if (ndr_flags & NDR_SCALARS) {
uint32_t saved_offset = ndr->offset;
uint32_t available = 0;
NDR_CHECK(ndr_pull_align(ndr, 5));
r->count = 0;
available = ndr->data_size - ndr->offset;
while (available > 0) {
uint32_t length;
/*
* The common header is 40 bytes
* and message_length is at offset 20
*/
NDR_PULL_NEED_BYTES(ndr, 40);
ndr->offset += 20;
NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &length));
ndr->offset -= 24;
if (length < 40) {
/*
* let the pull function catch the error
*/
length = 40;
}
NDR_PULL_NEED_BYTES(ndr, length);
ndr->offset += length;
available -= length;
r->count++;
}
ndr->offset = saved_offset;
size_messages_0 = r->count;
NDR_PULL_ALLOC_N(ndr, r->messages, size_messages_0);
_mem_save_messages_0 = NDR_PULL_GET_MEM_CTX(ndr);
NDR_PULL_SET_MEM_CTX(ndr, r->messages, 0);
for (cntr_messages_0 = 0; cntr_messages_0 < (size_messages_0); cntr_messages_0++) {
NDR_CHECK(ndr_pull_negoex_MESSAGE(ndr, NDR_SCALARS|NDR_BUFFERS, &r->messages[cntr_messages_0]));
}
NDR_PULL_SET_MEM_CTX(ndr, _mem_save_messages_0, 0);
NDR_CHECK(ndr_pull_trailer_align(ndr, 5));
}
ndr->flags = _flags_save_STRUCT;
}
return NDR_ERR_SUCCESS;
}
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