2 Unix SMB/CIFS implementation.
3 Privileges handling functions
4 Copyright (C) Jean François Micouleau 1998-2001
5 Copyright (C) Simo Sorce 2002-2003
6 Copyright (C) Gerald (Jerry) Carter 2005
7 Copyright (C) Michael Adam 2007
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27 #define PRIVPREFIX "PRIV_"
40 static BOOL
get_privileges( const DOM_SID
*sid
, SE_PRIV
*mask
)
42 TDB_CONTEXT
*tdb
= get_account_pol_tdb();
46 /* Fail if the admin has not enable privileges */
48 if ( !lp_enable_privileges() ) {
55 /* PRIV_<SID> (NULL terminated) as the key */
57 fstr_sprintf( keystr
, "%s%s", PRIVPREFIX
, sid_string_static(sid
) );
59 data
= tdb_fetch_bystring( tdb
, keystr
);
62 DEBUG(3,("get_privileges: No privileges assigned to SID [%s]\n",
63 sid_string_static(sid
)));
67 SMB_ASSERT( data
.dsize
== sizeof( SE_PRIV
) );
69 se_priv_copy( mask
, (SE_PRIV
*)data
.dptr
);
75 /***************************************************************************
76 Store the privilege mask (set) for a given SID
77 ****************************************************************************/
79 static BOOL
set_privileges( const DOM_SID
*sid
, SE_PRIV
*mask
)
81 TDB_CONTEXT
*tdb
= get_account_pol_tdb();
85 if ( !lp_enable_privileges() )
91 if ( !sid
|| (sid
->num_auths
== 0) ) {
92 DEBUG(0,("set_privileges: Refusing to store empty SID!\n"));
96 /* PRIV_<SID> (NULL terminated) as the key */
98 fstr_sprintf( keystr
, "%s%s", PRIVPREFIX
, sid_string_static(sid
) );
100 /* no packing. static size structure, just write it out */
102 data
.dptr
= (uint8
*)mask
;
103 data
.dsize
= sizeof(SE_PRIV
);
105 return ( tdb_store_bystring(tdb
, keystr
, data
, TDB_REPLACE
) != -1 );
108 /*********************************************************************
109 get a list of all privleges for all sids the in list
110 *********************************************************************/
112 BOOL
get_privileges_for_sids(SE_PRIV
*privileges
, DOM_SID
*slist
, int scount
)
118 se_priv_copy( privileges
, &se_priv_none
);
120 for ( i
=0; i
<scount
; i
++ ) {
121 /* don't add unless we actually have a privilege assigned */
123 if ( !get_privileges( &slist
[i
], &mask
) )
126 DEBUG(5,("get_privileges_for_sids: sid = %s\nPrivilege set:\n",
127 sid_string_static(&slist
[i
])));
128 dump_se_priv( DBGC_ALL
, 5, &mask
);
130 se_priv_add( privileges
, &mask
);
138 /*********************************************************************
139 travseral functions for privilege_enumerate_accounts
140 *********************************************************************/
142 static int priv_traverse_fn(TDB_CONTEXT
*t
, TDB_DATA key
, TDB_DATA data
, void *state
)
144 PRIV_SID_LIST
*priv
= (PRIV_SID_LIST
*)state
;
145 int prefixlen
= strlen(PRIVPREFIX
);
149 /* easy check first */
151 if ( data
.dsize
!= sizeof(SE_PRIV
) )
154 /* check we have a PRIV_+SID entry */
156 if ( strncmp((const char *)key
.dptr
, PRIVPREFIX
, prefixlen
) != 0)
159 /* check to see if we are looking for a particular privilege */
161 if ( !se_priv_equal(&priv
->privilege
, &se_priv_none
) ) {
164 se_priv_copy( &mask
, (SE_PRIV
*)data
.dptr
);
166 /* if the SID does not have the specified privilege
169 if ( !is_privilege_assigned( &mask
, &priv
->privilege
) )
173 fstrcpy( sid_string
, (const char *)&key
.dptr
[strlen(PRIVPREFIX
)] );
175 /* this is a last ditch safety check to preventing returning
176 and invalid SID (i've somehow run into this on development branches) */
178 if ( strcmp( "S-0-0", sid_string
) == 0 )
181 if ( !string_to_sid(&sid
, sid_string
) ) {
182 DEBUG(0,("travsersal_fn_enum__acct: Could not convert SID [%s]\n",
187 if (!add_sid_to_array( NULL
, &sid
, &priv
->sids
.list
, &priv
->sids
.count
)) {
194 /*********************************************************************
195 Retreive list of privileged SIDs (for _lsa_enumerate_accounts()
196 *********************************************************************/
198 NTSTATUS
privilege_enumerate_accounts(DOM_SID
**sids
, int *num_sids
)
200 TDB_CONTEXT
*tdb
= get_account_pol_tdb();
204 return NT_STATUS_ACCESS_DENIED
;
209 se_priv_copy( &priv
.privilege
, &se_priv_none
);
211 tdb_traverse( tdb
, priv_traverse_fn
, &priv
);
213 /* give the memory away; caller will free */
215 *sids
= priv
.sids
.list
;
216 *num_sids
= priv
.sids
.count
;
221 /***************************************************************************
223 ****************************************************************************/
225 BOOL
grant_privilege(const DOM_SID
*sid
, const SE_PRIV
*priv_mask
)
227 SE_PRIV old_mask
, new_mask
;
229 ZERO_STRUCT( old_mask
);
230 ZERO_STRUCT( new_mask
);
232 if ( get_privileges( sid
, &old_mask
) )
233 se_priv_copy( &new_mask
, &old_mask
);
235 se_priv_copy( &new_mask
, &se_priv_none
);
237 se_priv_add( &new_mask
, priv_mask
);
239 DEBUG(10,("grant_privilege: %s\n", sid_string_static(sid
)));
241 DEBUGADD( 10, ("original privilege mask:\n"));
242 dump_se_priv( DBGC_ALL
, 10, &old_mask
);
244 DEBUGADD( 10, ("new privilege mask:\n"));
245 dump_se_priv( DBGC_ALL
, 10, &new_mask
);
247 return set_privileges( sid
, &new_mask
);
250 /*********************************************************************
251 Add a privilege based on its name
252 *********************************************************************/
254 BOOL
grant_privilege_by_name(DOM_SID
*sid
, const char *name
)
258 if (! se_priv_from_name(name
, &mask
)) {
259 DEBUG(3, ("grant_privilege_by_name: "
260 "No Such Privilege Found (%s)\n", name
));
264 return grant_privilege( sid
, &mask
);
267 /***************************************************************************
268 Remove privilege from sid
269 ****************************************************************************/
271 BOOL
revoke_privilege(const DOM_SID
*sid
, const SE_PRIV
*priv_mask
)
275 /* if the user has no privileges, then we can't revoke any */
277 if ( !get_privileges( sid
, &mask
) )
280 DEBUG(10,("revoke_privilege: %s\n", sid_string_static(sid
)));
282 DEBUGADD( 10, ("original privilege mask:\n"));
283 dump_se_priv( DBGC_ALL
, 10, &mask
);
285 se_priv_remove( &mask
, priv_mask
);
287 DEBUGADD( 10, ("new privilege mask:\n"));
288 dump_se_priv( DBGC_ALL
, 10, &mask
);
290 return set_privileges( sid
, &mask
);
293 /*********************************************************************
294 Revoke all privileges
295 *********************************************************************/
297 BOOL
revoke_all_privileges( DOM_SID
*sid
)
299 return revoke_privilege( sid
, &se_priv_all
);
302 /*********************************************************************
303 Add a privilege based on its name
304 *********************************************************************/
306 BOOL
revoke_privilege_by_name(DOM_SID
*sid
, const char *name
)
310 if (! se_priv_from_name(name
, &mask
)) {
311 DEBUG(3, ("revoke_privilege_by_name: "
312 "No Such Privilege Found (%s)\n", name
));
316 return revoke_privilege(sid
, &mask
);
320 /***************************************************************************
321 Retrieve the SIDs assigned to a given privilege
322 ****************************************************************************/
324 NTSTATUS
privilege_create_account(const DOM_SID
*sid
)
326 return ( grant_privilege(sid
, &se_priv_none
) ? NT_STATUS_OK
: NT_STATUS_UNSUCCESSFUL
);
329 /****************************************************************************
330 initialise a privilege list and set the talloc context
331 ****************************************************************************/
333 NTSTATUS
privilege_set_init(PRIVILEGE_SET
*priv_set
)
337 ZERO_STRUCTP( priv_set
);
339 mem_ctx
= talloc_init("privilege set");
341 DEBUG(0,("privilege_set_init: failed to initialize talloc ctx!\n"));
342 return NT_STATUS_NO_MEMORY
;
345 priv_set
->mem_ctx
= mem_ctx
;
350 /****************************************************************************
351 initialise a privilege list and with someone else's talloc context
352 ****************************************************************************/
354 NTSTATUS
privilege_set_init_by_ctx(TALLOC_CTX
*mem_ctx
, PRIVILEGE_SET
*priv_set
)
356 ZERO_STRUCTP( priv_set
);
358 priv_set
->mem_ctx
= mem_ctx
;
359 priv_set
->ext_ctx
= True
;
364 /****************************************************************************
365 Free all memory used by a PRIVILEGE_SET
366 ****************************************************************************/
368 void privilege_set_free(PRIVILEGE_SET
*priv_set
)
373 if ( !( priv_set
->ext_ctx
) )
374 talloc_destroy( priv_set
->mem_ctx
);
376 ZERO_STRUCTP( priv_set
);
379 /****************************************************************************
380 duplicate alloc luid_attr
381 ****************************************************************************/
383 NTSTATUS
dup_luid_attr(TALLOC_CTX
*mem_ctx
, LUID_ATTR
**new_la
, LUID_ATTR
*old_la
, int count
)
391 *new_la
= TALLOC_ARRAY(mem_ctx
, LUID_ATTR
, count
);
393 DEBUG(0,("dup_luid_attr: failed to alloc new LUID_ATTR array [%d]\n", count
));
394 return NT_STATUS_NO_MEMORY
;
400 for (i
=0; i
<count
; i
++) {
401 (*new_la
)[i
].luid
.high
= old_la
[i
].luid
.high
;
402 (*new_la
)[i
].luid
.low
= old_la
[i
].luid
.low
;
403 (*new_la
)[i
].attr
= old_la
[i
].attr
;
409 /*******************************************************************
410 *******************************************************************/
412 BOOL
is_privileged_sid( const DOM_SID
*sid
)
416 return get_privileges( sid
, &mask
);
419 /*******************************************************************
420 *******************************************************************/
422 BOOL
grant_all_privileges( const DOM_SID
*sid
)
426 if (!se_priv_put_all_privileges(&mask
)) {
430 return grant_privilege( sid
, &mask
);