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samba-mirror/librpc/ndr/ndr_drsblobs.c
Stefan Metzmacher 26d2ea389b drsblobs.idl: supplementalCredentialsSubBlob make it possible to parse strange blobs
Windows omits the uint16 num_packages field when the packages array is empty.
This happens if the UF_SMARTCARD_REQUIRED flag is set for an account.

A user was created with a password and then userAccountControl was changed to
UF_NORMAL_ACCOUNT|UF_SMARTCARD_REQUIRED. In that case I'm getting
(as the whole supplementalCredentialsBlob):

[0000] 00 00 00 00 62 00 00 00   00 00 00 00 20 00 20 00   ....b... .... . .
[0010] 20 00 20 00 20 00 20 00   20 00 20 00 20 00 20 00    . . . .  . . . .
[0020] 20 00 20 00 20 00 20 00   20 00 20 00 20 00 20 00    . . . .  . . . .
[0030] 20 00 20 00 20 00 20 00   20 00 20 00 20 00 20 00    . . . .  . . . .
[0040] 20 00 20 00 20 00 20 00   20 00 20 00 20 00 20 00    . . . .  . . . .
[0050] 20 00 20 00 20 00 20 00   20 00 20 00 20 00 20 00    . . . .  . . . .
[0060] 20 00 20 00 20 00 20 00   20 00 20 00 50 00 30       . . . .  . .P.0

I've also got cases (where I created an account with
UF_NORMAL_ACCOUNT|UF_ACCOUNTDISABLE|UF_SMARTCARD_REQUIRED
in the LDAP add) with the following strange blobs:

One time:
[0000] 00 00 00 00 00 00 00 00   00 00 00 00 00
and once:
[0000] 00 00 00 00 00 00 00 00   00 00 00 00 53

BUG: https://bugzilla.samba.org/show_bug.cgi?id=11441

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
2016-07-20 21:27:17 +02:00

221 lines
8.3 KiB
C

/*
Unix SMB/CIFS implementation.
Manually parsed structures found in the DRS protocol
Copyright (C) Andrew Bartlett <abartlet@samba.org> 2008
Copyright (C) Guenther Deschner <gd@samba.org> 2010
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_drsblobs.h"
#include "../lib/util/asn1.h"
_PUBLIC_ enum ndr_err_code ndr_push_AuthenticationInformationArray(struct ndr_push *ndr, int ndr_flags, const struct AuthenticationInformationArray *r)
{
uint32_t cntr_array_0;
if (ndr_flags & NDR_SCALARS) {
NDR_CHECK(ndr_push_align(ndr, 4));
for (cntr_array_0 = 0; cntr_array_0 < r->count; cntr_array_0++) {
NDR_CHECK(ndr_push_AuthenticationInformation(ndr, NDR_SCALARS, &r->array[cntr_array_0]));
}
NDR_CHECK(ndr_push_align(ndr, 4));
}
if (ndr_flags & NDR_BUFFERS) {
}
return NDR_ERR_SUCCESS;
}
_PUBLIC_ enum ndr_err_code ndr_pull_AuthenticationInformationArray(struct ndr_pull *ndr, int ndr_flags, struct AuthenticationInformationArray *r)
{
if (ndr_flags & NDR_SCALARS) {
r->count = 0;
NDR_PULL_ALLOC_N(ndr, r->array, r->count);
/* entry is at least 16 bytes large */
while (ndr->offset + 16 <= ndr->data_size) {
r->array = talloc_realloc(ndr, r->array, struct AuthenticationInformation, r->count + 1);
NDR_ERR_HAVE_NO_MEMORY(r->array);
NDR_CHECK(ndr_pull_AuthenticationInformation(ndr, NDR_SCALARS, &r->array[r->count]));
r->count++;
}
NDR_CHECK(ndr_pull_align(ndr, 4));
}
if (ndr_flags & NDR_BUFFERS) {
}
return NDR_ERR_SUCCESS;
}
_PUBLIC_ enum ndr_err_code ndr_push_trustAuthInOutBlob(struct ndr_push *ndr, int ndr_flags, const struct trustAuthInOutBlob *r)
{
if (ndr_flags & NDR_SCALARS) {
NDR_CHECK(ndr_push_align(ndr, 4));
NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS, r->count));
NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS, (r->count > 0)?12:0));
NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS, (r->count > 0)?12 + ndr_size_AuthenticationInformationArray(&r->current, 0):0));
{
struct ndr_push *_ndr_current;
NDR_CHECK(ndr_push_subcontext_start(ndr, &_ndr_current, 0, ((r->count > 0)?12 + ndr_size_AuthenticationInformationArray(&r->current, 0):0) - ((r->count > 0)?12:0)));
NDR_CHECK(ndr_push_AuthenticationInformationArray(_ndr_current, NDR_SCALARS, &r->current));
NDR_CHECK(ndr_push_subcontext_end(ndr, _ndr_current, 0, ((r->count > 0)?12 + ndr_size_AuthenticationInformationArray(&r->current, 0):0) - ((r->count > 0)?12:0)));
}
{
uint32_t _flags_save_AuthenticationInformationArray = ndr->flags;
ndr_set_flags(&ndr->flags, LIBNDR_FLAG_REMAINING);
{
struct ndr_push *_ndr_previous;
NDR_CHECK(ndr_push_subcontext_start(ndr, &_ndr_previous, 0, -1));
NDR_CHECK(ndr_push_AuthenticationInformationArray(_ndr_previous, NDR_SCALARS, &r->previous));
NDR_CHECK(ndr_push_subcontext_end(ndr, _ndr_previous, 0, -1));
}
ndr->flags = _flags_save_AuthenticationInformationArray;
}
NDR_CHECK(ndr_push_trailer_align(ndr, 4));
}
if (ndr_flags & NDR_BUFFERS) {
}
return NDR_ERR_SUCCESS;
}
_PUBLIC_ enum ndr_err_code ndr_pull_trustDomainPasswords(struct ndr_pull *ndr, int ndr_flags, struct trustDomainPasswords *r)
{
if (ndr_flags & NDR_SCALARS) {
uint32_t offset;
NDR_PULL_ALIGN(ndr, 4);
NDR_PULL_NEED_BYTES(ndr, 8);
offset = ndr->offset;
ndr->offset = ndr->data_size - 8;
NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &r->outgoing_size));
NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &r->incoming_size));
ndr->offset = offset;
NDR_CHECK(ndr_pull_array_uint8(ndr, NDR_SCALARS, r->confounder, 512));
{
struct ndr_pull *_ndr_outgoing;
NDR_CHECK(ndr_pull_subcontext_start(ndr, &_ndr_outgoing, 0, r->outgoing_size));
NDR_CHECK(ndr_pull_trustAuthInOutBlob(_ndr_outgoing, NDR_SCALARS|NDR_BUFFERS, &r->outgoing));
NDR_CHECK(ndr_pull_subcontext_end(ndr, _ndr_outgoing, 0, r->outgoing_size));
}
{
struct ndr_pull *_ndr_incoming;
NDR_CHECK(ndr_pull_subcontext_start(ndr, &_ndr_incoming, 0, r->incoming_size));
NDR_CHECK(ndr_pull_trustAuthInOutBlob(_ndr_incoming, NDR_SCALARS|NDR_BUFFERS, &r->incoming));
NDR_CHECK(ndr_pull_subcontext_end(ndr, _ndr_incoming, 0, r->incoming_size));
}
NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &r->outgoing_size));
NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &r->incoming_size));
}
if (ndr_flags & NDR_BUFFERS) {
}
return NDR_ERR_SUCCESS;
}
_PUBLIC_ void ndr_print_drsuapi_MSPrefixMap_Entry(struct ndr_print *ndr, const char *name, const struct drsuapi_MSPrefixMap_Entry *r)
{
ndr_print_struct(ndr, name, "drsuapi_MSPrefixMap_Entry");
{
uint32_t _flags_save_STRUCT = ndr->flags;
ndr_set_flags(&ndr->flags, LIBNDR_FLAG_NOALIGN);
ndr->depth++;
ndr_print_uint16(ndr, "entryID", r->entryID);
ndr->print(ndr, "%-25s: length=%u", "oid", r->length);
if (r->binary_oid) {
char *partial_oid = NULL;
DATA_BLOB oid_blob = data_blob_const(r->binary_oid, r->length);
char *hex_str = data_blob_hex_string_upper(ndr, &oid_blob);
ber_read_partial_OID_String(ndr, oid_blob, &partial_oid);
ndr->depth++;
ndr->print(ndr, "%-25s: 0x%s (%s)", "binary_oid", hex_str, partial_oid);
ndr->depth--;
talloc_free(hex_str);
talloc_free(partial_oid);
}
ndr->depth--;
ndr->flags = _flags_save_STRUCT;
}
}
_PUBLIC_ enum ndr_err_code ndr_push_supplementalCredentialsSubBlob(struct ndr_push *ndr, int ndr_flags, const struct supplementalCredentialsSubBlob *r)
{
uint32_t cntr_packages_0;
NDR_PUSH_CHECK_FLAGS(ndr, ndr_flags);
if (ndr_flags & NDR_SCALARS) {
if ((r->signature != SUPPLEMENTAL_CREDENTIALS_SIGNATURE)
&& (r->num_packages == 0)) {
return NDR_ERR_SUCCESS;
}
NDR_CHECK(ndr_push_align(ndr, 3));
NDR_CHECK(ndr_push_charset(ndr, NDR_SCALARS, SUPPLEMENTAL_CREDENTIALS_PREFIX, 0x30, sizeof(uint16_t), CH_UTF16));
NDR_CHECK(ndr_push_supplementalCredentialsSignature(ndr, NDR_SCALARS, SUPPLEMENTAL_CREDENTIALS_SIGNATURE));
if (r->num_packages > 0) {
NDR_CHECK(ndr_push_uint16(ndr, NDR_SCALARS, r->num_packages));
}
for (cntr_packages_0 = 0; cntr_packages_0 < (r->num_packages); cntr_packages_0++) {
NDR_CHECK(ndr_push_supplementalCredentialsPackage(ndr, NDR_SCALARS, &r->packages[cntr_packages_0]));
}
NDR_CHECK(ndr_push_trailer_align(ndr, 3));
}
if (ndr_flags & NDR_BUFFERS) {
}
return NDR_ERR_SUCCESS;
}
_PUBLIC_ enum ndr_err_code ndr_pull_supplementalCredentialsSubBlob(struct ndr_pull *ndr, int ndr_flags, struct supplementalCredentialsSubBlob *r)
{
uint32_t size_prefix_0 = 0;
uint32_t size_packages_0 = 0;
uint32_t cntr_packages_0;
TALLOC_CTX *_mem_save_packages_0 = NULL;
NDR_PULL_CHECK_FLAGS(ndr, ndr_flags);
if (ndr_flags & NDR_SCALARS) {
uint32_t remaining = 0;
NDR_CHECK(ndr_pull_align(ndr, 3));
size_prefix_0 = 0x30;
remaining = ndr->data_size - ndr->offset;
if (remaining >= size_prefix_0) {
NDR_CHECK(ndr_pull_charset(ndr, NDR_SCALARS, &r->prefix, size_prefix_0, sizeof(uint16_t), CH_UTF16));
} else {
r->prefix = NULL;
}
remaining = ndr->data_size - ndr->offset;
if (remaining >= 2) {
NDR_CHECK(ndr_pull_supplementalCredentialsSignature(ndr, NDR_SCALARS, &r->signature));
} else {
r->signature = 0;
}
remaining = ndr->data_size - ndr->offset;
if (remaining > 0) {
NDR_CHECK(ndr_pull_uint16(ndr, NDR_SCALARS, &r->num_packages));
} else {
r->num_packages = 0;
}
size_packages_0 = r->num_packages;
NDR_PULL_ALLOC_N(ndr, r->packages, size_packages_0);
_mem_save_packages_0 = NDR_PULL_GET_MEM_CTX(ndr);
NDR_PULL_SET_MEM_CTX(ndr, r->packages, 0);
for (cntr_packages_0 = 0; cntr_packages_0 < (size_packages_0); cntr_packages_0++) {
NDR_CHECK(ndr_pull_supplementalCredentialsPackage(ndr, NDR_SCALARS, &r->packages[cntr_packages_0]));
}
NDR_PULL_SET_MEM_CTX(ndr, _mem_save_packages_0, 0);
NDR_CHECK(ndr_pull_trailer_align(ndr, 3));
}
if (ndr_flags & NDR_BUFFERS) {
}
return NDR_ERR_SUCCESS;
}