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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
Copyright (C) Andrew Bartlett 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_security.h"
#include "../librpc/gen_ndr/netlogon.h"
#include "../libcli/security/security.h"
/*
* Some useful sids, more well known sids can be found at
* http://support.microsoft.com/kb/243330/EN-US/
*/
const struct 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 struct 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 struct 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 struct 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 struct 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 struct 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 struct 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 struct 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 struct 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 struct 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 struct 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 struct 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 struct dom_sid global_sid_Enterprise_DCs = /* Enterprise DCs */
{ 1, 1, {0,0,0,0,0,5}, {9,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
const struct 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 struct 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 struct 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 struct 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 struct 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 struct 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 struct 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 struct 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 struct 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 struct 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 struct 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 struct 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 struct 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
static struct 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}} };
static const struct security_token system_token = {
.num_sids = ARRAY_SIZE(system_sid_array),
.sids = system_sid_array,
.privilege_mask = 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_USE_NONE, "None"},
{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_t 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.
***************************************************************************/
const struct security_token *get_system_token(void)
{
return &system_token;
}
bool sid_compose(struct dom_sid *dst, const struct dom_sid *domain_sid, uint32_t 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(struct dom_sid *sid, uint32_t *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 struct dom_sid *sid, uint32_t *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 struct dom_sid *exp_dom_sid, const struct dom_sid *sid, uint32_t *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(struct dom_sid *dst, const struct 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];
}
/*****************************************************************
Parse a on-the-wire SID (in a DATA_BLOB) to a struct dom_sid.
*****************************************************************/
bool sid_blob_parse(DATA_BLOB in, struct dom_sid *sid)
{
enum ndr_err_code ndr_err;
ndr_err = ndr_pull_struct_blob_all(&in, NULL, sid,
(ndr_pull_flags_fn_t)ndr_pull_dom_sid);
if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
return false;
}
return true;
}
/*****************************************************************
Parse a on-the-wire SID to a struct dom_sid.
*****************************************************************/
bool sid_parse(const char *inbuf, size_t len, struct dom_sid *sid)
{
enum ndr_err_code ndr_err;
DATA_BLOB in = data_blob_const(inbuf, len);
return sid_blob_parse(in, sid);
}
/*****************************************************************
See if 2 SIDs are in the same domain
this just compares the leading sub-auths
*****************************************************************/
int sid_compare_domain(const struct dom_sid *sid1, const struct 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 dom_sid_compare_auth(sid1, sid2);
}
/*****************************************************************
Compare two sids.
*****************************************************************/
bool sid_equal(const struct dom_sid *sid1, const struct dom_sid *sid2)
{
return dom_sid_compare(sid1, sid2) == 0;
}
/********************************************************************
Add SID to an array SIDs
********************************************************************/
NTSTATUS add_sid_to_array(TALLOC_CTX *mem_ctx, const struct dom_sid *sid,
struct dom_sid **sids, uint32_t *num)
{
*sids = talloc_realloc(mem_ctx, *sids, struct 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 struct dom_sid *sid,
struct dom_sid **sids, uint32_t *num_sids)
{
size_t i;
for (i=0; i<(*num_sids); i++) {
if (dom_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 struct dom_sid *sid, struct dom_sid **sids, size_t *num)
{
struct 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_t rid, uint32_t **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(mem_ctx, *pp_rids, uint32_t, *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 struct dom_sid *sid)
{
static const struct dom_sid null_sid = {0};
return sid_equal(sid, &null_sid);
}
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