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|
/*
Unix SMB/CIFS implementation.
Samba utility functions
Copyright (C) Andrew Tridgell 1992-1998
Copyright (C) Luke Kenneth Caseson Leighton 1998-1999
Copyright (C) Jeremy Allison 1999
Copyright (C) Stefan (metze) Metzmacher 2002
Copyright (C) Simo Sorce 2002
Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2005
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"
/*
* Some useful sids, more well known sids can be found at
* http://support.microsoft.com/kb/243330/EN-US/
*/
const DOM_SID global_sid_World_Domain = /* Everyone domain */
{ 1, 0, {0,0,0,0,0,1}, {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
const DOM_SID global_sid_World = /* Everyone */
{ 1, 1, {0,0,0,0,0,1}, {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
const DOM_SID global_sid_Creator_Owner_Domain = /* Creator Owner domain */
{ 1, 0, {0,0,0,0,0,3}, {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
const DOM_SID global_sid_NT_Authority = /* NT Authority */
{ 1, 0, {0,0,0,0,0,5}, {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
const DOM_SID global_sid_System = /* System */
{ 1, 1, {0,0,0,0,0,5}, {18,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
const DOM_SID global_sid_NULL = /* NULL sid */
{ 1, 1, {0,0,0,0,0,0}, {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
const DOM_SID global_sid_Authenticated_Users = /* All authenticated rids */
{ 1, 1, {0,0,0,0,0,5}, {11,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
#if 0
/* for documentation */
const DOM_SID global_sid_Restriced = /* Restriced Code */
{ 1, 1, {0,0,0,0,0,5}, {12,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
#endif
const DOM_SID global_sid_Network = /* Network rids */
{ 1, 1, {0,0,0,0,0,5}, {2,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
const DOM_SID global_sid_Creator_Owner = /* Creator Owner */
{ 1, 1, {0,0,0,0,0,3}, {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
const DOM_SID global_sid_Creator_Group = /* Creator Group */
{ 1, 1, {0,0,0,0,0,3}, {1,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
const DOM_SID global_sid_Anonymous = /* Anonymous login */
{ 1, 1, {0,0,0,0,0,5}, {7,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
const DOM_SID global_sid_Builtin = /* Local well-known domain */
{ 1, 1, {0,0,0,0,0,5}, {32,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
const DOM_SID global_sid_Builtin_Administrators = /* Builtin administrators */
{ 1, 2, {0,0,0,0,0,5}, {32,544,0,0,0,0,0,0,0,0,0,0,0,0,0}};
const DOM_SID global_sid_Builtin_Users = /* Builtin users */
{ 1, 2, {0,0,0,0,0,5}, {32,545,0,0,0,0,0,0,0,0,0,0,0,0,0}};
const DOM_SID global_sid_Builtin_Guests = /* Builtin guest users */
{ 1, 2, {0,0,0,0,0,5}, {32,546,0,0,0,0,0,0,0,0,0,0,0,0,0}};
const DOM_SID global_sid_Builtin_Power_Users = /* Builtin power users */
{ 1, 2, {0,0,0,0,0,5}, {32,547,0,0,0,0,0,0,0,0,0,0,0,0,0}};
const DOM_SID global_sid_Builtin_Account_Operators = /* Builtin account operators */
{ 1, 2, {0,0,0,0,0,5}, {32,548,0,0,0,0,0,0,0,0,0,0,0,0,0}};
const DOM_SID global_sid_Builtin_Server_Operators = /* Builtin server operators */
{ 1, 2, {0,0,0,0,0,5}, {32,549,0,0,0,0,0,0,0,0,0,0,0,0,0}};
const DOM_SID global_sid_Builtin_Print_Operators = /* Builtin print operators */
{ 1, 2, {0,0,0,0,0,5}, {32,550,0,0,0,0,0,0,0,0,0,0,0,0,0}};
const DOM_SID global_sid_Builtin_Backup_Operators = /* Builtin backup operators */
{ 1, 2, {0,0,0,0,0,5}, {32,551,0,0,0,0,0,0,0,0,0,0,0,0,0}};
const DOM_SID global_sid_Builtin_Replicator = /* Builtin replicator */
{ 1, 2, {0,0,0,0,0,5}, {32,552,0,0,0,0,0,0,0,0,0,0,0,0,0}};
const DOM_SID global_sid_Builtin_PreWin2kAccess = /* Builtin pre win2k access */
{ 1, 2, {0,0,0,0,0,5}, {32,554,0,0,0,0,0,0,0,0,0,0,0,0,0}};
const DOM_SID global_sid_Unix_Users = /* Unmapped Unix users */
{ 1, 1, {0,0,0,0,0,22}, {1,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
const DOM_SID global_sid_Unix_Groups = /* Unmapped Unix groups */
{ 1, 1, {0,0,0,0,0,22}, {2,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
/* Unused, left here for documentary purposes */
#if 0
#define SECURITY_NULL_SID_AUTHORITY 0
#define SECURITY_WORLD_SID_AUTHORITY 1
#define SECURITY_LOCAL_SID_AUTHORITY 2
#define SECURITY_CREATOR_SID_AUTHORITY 3
#define SECURITY_NT_AUTHORITY 5
#endif
/*
* An NT compatible anonymous token.
*/
static DOM_SID anon_sid_array[3] =
{ { 1, 1, {0,0,0,0,0,1}, {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}},
{ 1, 1, {0,0,0,0,0,5}, {2,0,0,0,0,0,0,0,0,0,0,0,0,0,0}},
{ 1, 1, {0,0,0,0,0,5}, {7,0,0,0,0,0,0,0,0,0,0,0,0,0,0}} };
NT_USER_TOKEN anonymous_token = { 3, anon_sid_array, SE_NONE };
static DOM_SID system_sid_array[1] =
{ { 1, 1, {0,0,0,0,0,5}, {18,0,0,0,0,0,0,0,0,0,0,0,0,0,0}} };
NT_USER_TOKEN system_token = { 1, system_sid_array, SE_ALL_PRIVS };
/****************************************************************************
Lookup string names for SID types.
****************************************************************************/
static const struct {
enum lsa_SidType sid_type;
const char *string;
} sid_name_type[] = {
{SID_NAME_USER, "User"},
{SID_NAME_DOM_GRP, "Domain Group"},
{SID_NAME_DOMAIN, "Domain"},
{SID_NAME_ALIAS, "Local Group"},
{SID_NAME_WKN_GRP, "Well-known Group"},
{SID_NAME_DELETED, "Deleted Account"},
{SID_NAME_INVALID, "Invalid Account"},
{SID_NAME_UNKNOWN, "UNKNOWN"},
{SID_NAME_COMPUTER, "Computer"},
{(enum lsa_SidType)0, NULL}
};
const char *sid_type_lookup(uint32 sid_type)
{
int i = 0;
/* Look through list */
while(sid_name_type[i].sid_type != 0) {
if (sid_name_type[i].sid_type == sid_type)
return sid_name_type[i].string;
i++;
}
/* Default return */
return "SID *TYPE* is INVALID";
}
/**************************************************************************
Create the SYSTEM token.
***************************************************************************/
NT_USER_TOKEN *get_system_token(void)
{
return &system_token;
}
/******************************************************************
get the default domain/netbios name to be used when dealing
with our passdb list of accounts
******************************************************************/
const char *get_global_sam_name(void)
{
if ((lp_server_role() == ROLE_DOMAIN_PDC) || (lp_server_role() == ROLE_DOMAIN_BDC)) {
return lp_workgroup();
}
return global_myname();
}
/*****************************************************************
Convert a SID to an ascii string.
*****************************************************************/
char *sid_to_fstring(fstring sidstr_out, const DOM_SID *sid)
{
char *str = sid_string_talloc(talloc_tos(), sid);
fstrcpy(sidstr_out, str);
TALLOC_FREE(str);
return sidstr_out;
}
/*****************************************************************
Essentially a renamed dom_sid_string from librpc/ndr with a
panic if it didn't work
This introduces a dependency on librpc/ndr/sid.o which can easily
be turned around if necessary
*****************************************************************/
char *sid_string_talloc(TALLOC_CTX *mem_ctx, const DOM_SID *sid)
{
char *result = dom_sid_string(mem_ctx, sid);
SMB_ASSERT(result != NULL);
return result;
}
/*****************************************************************
Useful function for debug lines.
*****************************************************************/
char *sid_string_dbg(const DOM_SID *sid)
{
return sid_string_talloc(talloc_tos(), sid);
}
/*****************************************************************
Use with care!
*****************************************************************/
char *sid_string_tos(const DOM_SID *sid)
{
return sid_string_talloc(talloc_tos(), sid);
}
/*****************************************************************
Convert a string to a SID. Returns True on success, False on fail.
*****************************************************************/
bool string_to_sid(DOM_SID *sidout, const char *sidstr)
{
const char *p;
char *q;
/* BIG NOTE: this function only does SIDS where the identauth is not >= 2^32 */
uint32 conv;
if ((sidstr[0] != 'S' && sidstr[0] != 's') || sidstr[1] != '-') {
DEBUG(3,("string_to_sid: Sid %s does not start with 'S-'.\n", sidstr));
return False;
}
ZERO_STRUCTP(sidout);
/* Get the revision number. */
p = sidstr + 2;
conv = (uint32) strtoul(p, &q, 10);
if (!q || (*q != '-')) {
DEBUG(3,("string_to_sid: Sid %s is not in a valid format.\n", sidstr));
return False;
}
sidout->sid_rev_num = (uint8) conv;
q++;
/* get identauth */
conv = (uint32) strtoul(q, &q, 10);
if (!q || (*q != '-')) {
DEBUG(0,("string_to_sid: Sid %s is not in a valid format.\n", sidstr));
return False;
}
/* identauth in decimal should be < 2^32 */
/* NOTE - the conv value is in big-endian format. */
sidout->id_auth[0] = 0;
sidout->id_auth[1] = 0;
sidout->id_auth[2] = (conv & 0xff000000) >> 24;
sidout->id_auth[3] = (conv & 0x00ff0000) >> 16;
sidout->id_auth[4] = (conv & 0x0000ff00) >> 8;
sidout->id_auth[5] = (conv & 0x000000ff);
q++;
sidout->num_auths = 0;
for(conv = (uint32) strtoul(q, &q, 10);
q && (*q =='-' || *q =='\0') && (sidout->num_auths < MAXSUBAUTHS);
conv = (uint32) strtoul(q, &q, 10)) {
sid_append_rid(sidout, conv);
if (*q == '\0')
break;
q++;
}
return True;
}
DOM_SID *string_sid_talloc(TALLOC_CTX *mem_ctx, const char *sidstr)
{
DOM_SID *result = TALLOC_P(mem_ctx, DOM_SID);
if (result == NULL)
return NULL;
if (!string_to_sid(result, sidstr))
return NULL;
return result;
}
/*****************************************************************
Add a rid to the end of a sid
*****************************************************************/
bool sid_append_rid(DOM_SID *sid, uint32 rid)
{
if (sid->num_auths < MAXSUBAUTHS) {
sid->sub_auths[sid->num_auths++] = rid;
return True;
}
return False;
}
bool sid_compose(DOM_SID *dst, const DOM_SID *domain_sid, uint32 rid)
{
sid_copy(dst, domain_sid);
return sid_append_rid(dst, rid);
}
/*****************************************************************
Removes the last rid from the end of a sid
*****************************************************************/
bool sid_split_rid(DOM_SID *sid, uint32 *rid)
{
if (sid->num_auths > 0) {
sid->num_auths--;
*rid = sid->sub_auths[sid->num_auths];
return True;
}
return False;
}
/*****************************************************************
Return the last rid from the end of a sid
*****************************************************************/
bool sid_peek_rid(const DOM_SID *sid, uint32 *rid)
{
if (!sid || !rid)
return False;
if (sid->num_auths > 0) {
*rid = sid->sub_auths[sid->num_auths - 1];
return True;
}
return False;
}
/*****************************************************************
Return the last rid from the end of a sid
and check the sid against the exp_dom_sid
*****************************************************************/
bool sid_peek_check_rid(const DOM_SID *exp_dom_sid, const DOM_SID *sid, uint32 *rid)
{
if (!exp_dom_sid || !sid || !rid)
return False;
if (sid->num_auths != (exp_dom_sid->num_auths+1)) {
return False;
}
if (sid_compare_domain(exp_dom_sid, sid)!=0){
*rid=(-1);
return False;
}
return sid_peek_rid(sid, rid);
}
/*****************************************************************
Copies a sid
*****************************************************************/
void sid_copy(DOM_SID *dst, const DOM_SID *src)
{
int i;
ZERO_STRUCTP(dst);
dst->sid_rev_num = src->sid_rev_num;
dst->num_auths = src->num_auths;
memcpy(&dst->id_auth[0], &src->id_auth[0], sizeof(src->id_auth));
for (i = 0; i < src->num_auths; i++)
dst->sub_auths[i] = src->sub_auths[i];
}
/*****************************************************************
Write a sid out into on-the-wire format.
*****************************************************************/
bool sid_linearize(char *outbuf, size_t len, const DOM_SID *sid)
{
size_t i;
if (len < ndr_size_dom_sid(sid, NULL, 0))
return False;
SCVAL(outbuf,0,sid->sid_rev_num);
SCVAL(outbuf,1,sid->num_auths);
memcpy(&outbuf[2], sid->id_auth, 6);
for(i = 0; i < sid->num_auths; i++)
SIVAL(outbuf, 8 + (i*4), sid->sub_auths[i]);
return True;
}
/*****************************************************************
Parse a on-the-wire SID to a DOM_SID.
*****************************************************************/
bool sid_parse(const char *inbuf, size_t len, DOM_SID *sid)
{
int i;
if (len < 8)
return False;
ZERO_STRUCTP(sid);
sid->sid_rev_num = CVAL(inbuf, 0);
sid->num_auths = CVAL(inbuf, 1);
memcpy(sid->id_auth, inbuf+2, 6);
if (len < 8 + sid->num_auths*4)
return False;
for (i=0;i<sid->num_auths;i++)
sid->sub_auths[i] = IVAL(inbuf, 8+i*4);
return True;
}
/*****************************************************************
Compare the auth portion of two sids.
*****************************************************************/
static int sid_compare_auth(const DOM_SID *sid1, const DOM_SID *sid2)
{
int i;
if (sid1 == sid2)
return 0;
if (!sid1)
return -1;
if (!sid2)
return 1;
if (sid1->sid_rev_num != sid2->sid_rev_num)
return sid1->sid_rev_num - sid2->sid_rev_num;
for (i = 0; i < 6; i++)
if (sid1->id_auth[i] != sid2->id_auth[i])
return sid1->id_auth[i] - sid2->id_auth[i];
return 0;
}
/*****************************************************************
Compare two sids.
*****************************************************************/
int sid_compare(const DOM_SID *sid1, const DOM_SID *sid2)
{
int i;
if (sid1 == sid2)
return 0;
if (!sid1)
return -1;
if (!sid2)
return 1;
/* Compare most likely different rids, first: i.e start at end */
if (sid1->num_auths != sid2->num_auths)
return sid1->num_auths - sid2->num_auths;
for (i = sid1->num_auths-1; i >= 0; --i)
if (sid1->sub_auths[i] != sid2->sub_auths[i])
return sid1->sub_auths[i] - sid2->sub_auths[i];
return sid_compare_auth(sid1, sid2);
}
/*****************************************************************
See if 2 SIDs are in the same domain
this just compares the leading sub-auths
*****************************************************************/
int sid_compare_domain(const DOM_SID *sid1, const DOM_SID *sid2)
{
int n, i;
n = MIN(sid1->num_auths, sid2->num_auths);
for (i = n-1; i >= 0; --i)
if (sid1->sub_auths[i] != sid2->sub_auths[i])
return sid1->sub_auths[i] - sid2->sub_auths[i];
return sid_compare_auth(sid1, sid2);
}
/*****************************************************************
Compare two sids.
*****************************************************************/
bool sid_equal(const DOM_SID *sid1, const DOM_SID *sid2)
{
return sid_compare(sid1, sid2) == 0;
}
/*****************************************************************
Returns true if SID is internal (and non-mappable).
*****************************************************************/
bool non_mappable_sid(DOM_SID *sid)
{
DOM_SID dom;
uint32 rid;
sid_copy(&dom, sid);
sid_split_rid(&dom, &rid);
if (sid_equal(&dom, &global_sid_Builtin))
return True;
if (sid_equal(&dom, &global_sid_NT_Authority))
return True;
return False;
}
/*****************************************************************
Return the binary string representation of a DOM_SID.
Caller must free.
*****************************************************************/
char *sid_binstring(TALLOC_CTX *mem_ctx, const DOM_SID *sid)
{
uint8_t *buf;
char *s;
int len = ndr_size_dom_sid(sid, NULL, 0);
buf = talloc_array(mem_ctx, uint8_t, len);
if (!buf) {
return NULL;
}
sid_linearize((char *)buf, len, sid);
s = binary_string_rfc2254(mem_ctx, buf, len);
TALLOC_FREE(buf);
return s;
}
/*****************************************************************
Return the binary string representation of a DOM_SID.
Caller must free.
*****************************************************************/
char *sid_binstring_hex(const DOM_SID *sid)
{
char *buf, *s;
int len = ndr_size_dom_sid(sid, NULL, 0);
buf = (char *)SMB_MALLOC(len);
if (!buf)
return NULL;
sid_linearize(buf, len, sid);
s = binary_string(buf, len);
free(buf);
return s;
}
/*******************************************************************
Tallocs a duplicate SID.
********************************************************************/
DOM_SID *sid_dup_talloc(TALLOC_CTX *ctx, const DOM_SID *src)
{
DOM_SID *dst;
if(!src)
return NULL;
if((dst = TALLOC_ZERO_P(ctx, DOM_SID)) != NULL) {
sid_copy( dst, src);
}
return dst;
}
/********************************************************************
Add SID to an array SIDs
********************************************************************/
NTSTATUS add_sid_to_array(TALLOC_CTX *mem_ctx, const DOM_SID *sid,
DOM_SID **sids, size_t *num)
{
*sids = TALLOC_REALLOC_ARRAY(mem_ctx, *sids, DOM_SID,
(*num)+1);
if (*sids == NULL) {
*num = 0;
return NT_STATUS_NO_MEMORY;
}
sid_copy(&((*sids)[*num]), sid);
*num += 1;
return NT_STATUS_OK;
}
/********************************************************************
Add SID to an array SIDs ensuring that it is not already there
********************************************************************/
NTSTATUS add_sid_to_array_unique(TALLOC_CTX *mem_ctx, const DOM_SID *sid,
DOM_SID **sids, size_t *num_sids)
{
size_t i;
for (i=0; i<(*num_sids); i++) {
if (sid_compare(sid, &(*sids)[i]) == 0)
return NT_STATUS_OK;
}
return add_sid_to_array(mem_ctx, sid, sids, num_sids);
}
/********************************************************************
Remove SID from an array
********************************************************************/
void del_sid_from_array(const DOM_SID *sid, DOM_SID **sids, size_t *num)
{
DOM_SID *sid_list = *sids;
size_t i;
for ( i=0; i<*num; i++ ) {
/* if we find the SID, then decrement the count
and break out of the loop */
if ( sid_equal(sid, &sid_list[i]) ) {
*num -= 1;
break;
}
}
/* This loop will copy the remainder of the array
if i < num of sids ni the array */
for ( ; i<*num; i++ )
sid_copy( &sid_list[i], &sid_list[i+1] );
return;
}
bool add_rid_to_array_unique(TALLOC_CTX *mem_ctx,
uint32 rid, uint32 **pp_rids, size_t *p_num)
{
size_t i;
for (i=0; i<*p_num; i++) {
if ((*pp_rids)[i] == rid)
return True;
}
*pp_rids = TALLOC_REALLOC_ARRAY(mem_ctx, *pp_rids, uint32, *p_num+1);
if (*pp_rids == NULL) {
*p_num = 0;
return False;
}
(*pp_rids)[*p_num] = rid;
*p_num += 1;
return True;
}
bool is_null_sid(const DOM_SID *sid)
{
static const DOM_SID null_sid = {0};
return sid_equal(sid, &null_sid);
}
bool is_sid_in_token(const NT_USER_TOKEN *token, const DOM_SID *sid)
{
int i;
for (i=0; i<token->num_sids; i++) {
if (sid_compare(sid, &token->user_sids[i]) == 0)
return true;
}
return false;
}
NTSTATUS sid_array_from_info3(TALLOC_CTX *mem_ctx,
const struct netr_SamInfo3 *info3,
DOM_SID **user_sids,
size_t *num_user_sids,
bool include_user_group_rid,
bool skip_ressource_groups)
{
NTSTATUS status;
DOM_SID sid;
DOM_SID *sid_array = NULL;
size_t num_sids = 0;
int i;
if (include_user_group_rid) {
if (!sid_compose(&sid, info3->base.domain_sid, info3->base.rid)) {
DEBUG(3, ("could not compose user SID from rid 0x%x\n",
info3->base.rid));
return NT_STATUS_INVALID_PARAMETER;
}
status = add_sid_to_array(mem_ctx, &sid, &sid_array, &num_sids);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(3, ("could not append user SID from rid 0x%x\n",
info3->base.rid));
return status;
}
}
if (!sid_compose(&sid, info3->base.domain_sid, info3->base.primary_gid)) {
DEBUG(3, ("could not compose group SID from rid 0x%x\n",
info3->base.primary_gid));
return NT_STATUS_INVALID_PARAMETER;
}
status = add_sid_to_array(mem_ctx, &sid, &sid_array, &num_sids);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(3, ("could not append group SID from rid 0x%x\n",
info3->base.rid));
return status;
}
for (i = 0; i < info3->base.groups.count; i++) {
/* Don't add the primary group sid twice. */
if (info3->base.primary_gid == info3->base.groups.rids[i].rid) {
continue;
}
if (!sid_compose(&sid, info3->base.domain_sid,
info3->base.groups.rids[i].rid)) {
DEBUG(3, ("could not compose SID from additional group "
"rid 0x%x\n", info3->base.groups.rids[i].rid));
return NT_STATUS_INVALID_PARAMETER;
}
status = add_sid_to_array(mem_ctx, &sid, &sid_array, &num_sids);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(3, ("could not append SID from additional group "
"rid 0x%x\n", info3->base.groups.rids[i].rid));
return status;
}
}
/* Copy 'other' sids. We need to do sid filtering here to
prevent possible elevation of privileges. See:
http://www.microsoft.com/windows2000/techinfo/administration/security/sidfilter.asp
*/
for (i = 0; i < info3->sidcount; i++) {
if (skip_ressource_groups &&
(info3->sids[i].attributes & SE_GROUP_RESOURCE)) {
continue;
}
status = add_sid_to_array(mem_ctx, info3->sids[i].sid,
&sid_array, &num_sids);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(3, ("could not add SID to array: %s\n",
sid_string_dbg(info3->sids[i].sid)));
return status;
}
}
*user_sids = sid_array;
*num_user_sids = num_sids;
return NT_STATUS_OK;
}
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