source: branches/samba-3.3.x/source/lib/util_sid.c

Last change on this file was 491, checked in by Herwig Bauernfeind, 15 years ago

Update Samba 3.3 to 3.3.14 (security update)
File size: 22.1 KB
Line 
1/*
2 Unix SMB/CIFS implementation.
3 Samba utility functions
4 Copyright (C) Andrew Tridgell 1992-1998
5 Copyright (C) Luke Kenneth Caseson Leighton 1998-1999
6 Copyright (C) Jeremy Allison 1999
7 Copyright (C) Stefan (metze) Metzmacher 2002
8 Copyright (C) Simo Sorce 2002
9 Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2005
10
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 3 of the License, or
14 (at your option) any later version.
15
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
20
21 You should have received a copy of the GNU General Public License
22 along with this program. If not, see <http://www.gnu.org/licenses/>.
23*/
24
25#include "includes.h"
26
27/*
28 * Some useful sids, more well known sids can be found at
29 * http://support.microsoft.com/kb/243330/EN-US/
30 */
31
32
33const DOM_SID global_sid_World_Domain = /* Everyone domain */
34{ 1, 0, {0,0,0,0,0,1}, {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
35const DOM_SID global_sid_World = /* Everyone */
36{ 1, 1, {0,0,0,0,0,1}, {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
37const DOM_SID global_sid_Creator_Owner_Domain = /* Creator Owner domain */
38{ 1, 0, {0,0,0,0,0,3}, {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
39const DOM_SID global_sid_NT_Authority = /* NT Authority */
40{ 1, 0, {0,0,0,0,0,5}, {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
41const DOM_SID global_sid_System = /* System */
42{ 1, 1, {0,0,0,0,0,5}, {18,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
43const DOM_SID global_sid_NULL = /* NULL sid */
44{ 1, 1, {0,0,0,0,0,0}, {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
45const DOM_SID global_sid_Authenticated_Users = /* All authenticated rids */
46{ 1, 1, {0,0,0,0,0,5}, {11,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
47#if 0
48/* for documentation */
49const DOM_SID global_sid_Restriced = /* Restriced Code */
50{ 1, 1, {0,0,0,0,0,5}, {12,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
51#endif
52const DOM_SID global_sid_Network = /* Network rids */
53{ 1, 1, {0,0,0,0,0,5}, {2,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
54
55const DOM_SID global_sid_Creator_Owner = /* Creator Owner */
56{ 1, 1, {0,0,0,0,0,3}, {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
57const DOM_SID global_sid_Creator_Group = /* Creator Group */
58{ 1, 1, {0,0,0,0,0,3}, {1,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
59const DOM_SID global_sid_Anonymous = /* Anonymous login */
60{ 1, 1, {0,0,0,0,0,5}, {7,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
61
62const DOM_SID global_sid_Builtin = /* Local well-known domain */
63{ 1, 1, {0,0,0,0,0,5}, {32,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
64const DOM_SID global_sid_Builtin_Administrators = /* Builtin administrators */
65{ 1, 2, {0,0,0,0,0,5}, {32,544,0,0,0,0,0,0,0,0,0,0,0,0,0}};
66const DOM_SID global_sid_Builtin_Users = /* Builtin users */
67{ 1, 2, {0,0,0,0,0,5}, {32,545,0,0,0,0,0,0,0,0,0,0,0,0,0}};
68const DOM_SID global_sid_Builtin_Guests = /* Builtin guest users */
69{ 1, 2, {0,0,0,0,0,5}, {32,546,0,0,0,0,0,0,0,0,0,0,0,0,0}};
70const DOM_SID global_sid_Builtin_Power_Users = /* Builtin power users */
71{ 1, 2, {0,0,0,0,0,5}, {32,547,0,0,0,0,0,0,0,0,0,0,0,0,0}};
72const DOM_SID global_sid_Builtin_Account_Operators = /* Builtin account operators */
73{ 1, 2, {0,0,0,0,0,5}, {32,548,0,0,0,0,0,0,0,0,0,0,0,0,0}};
74const DOM_SID global_sid_Builtin_Server_Operators = /* Builtin server operators */
75{ 1, 2, {0,0,0,0,0,5}, {32,549,0,0,0,0,0,0,0,0,0,0,0,0,0}};
76const DOM_SID global_sid_Builtin_Print_Operators = /* Builtin print operators */
77{ 1, 2, {0,0,0,0,0,5}, {32,550,0,0,0,0,0,0,0,0,0,0,0,0,0}};
78const DOM_SID global_sid_Builtin_Backup_Operators = /* Builtin backup operators */
79{ 1, 2, {0,0,0,0,0,5}, {32,551,0,0,0,0,0,0,0,0,0,0,0,0,0}};
80const DOM_SID global_sid_Builtin_Replicator = /* Builtin replicator */
81{ 1, 2, {0,0,0,0,0,5}, {32,552,0,0,0,0,0,0,0,0,0,0,0,0,0}};
82const DOM_SID global_sid_Builtin_PreWin2kAccess = /* Builtin pre win2k access */
83{ 1, 2, {0,0,0,0,0,5}, {32,554,0,0,0,0,0,0,0,0,0,0,0,0,0}};
84
85const DOM_SID global_sid_Unix_Users = /* Unmapped Unix users */
86{ 1, 1, {0,0,0,0,0,22}, {1,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
87const DOM_SID global_sid_Unix_Groups = /* Unmapped Unix groups */
88{ 1, 1, {0,0,0,0,0,22}, {2,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
89
90/* Unused, left here for documentary purposes */
91#if 0
92#define SECURITY_NULL_SID_AUTHORITY 0
93#define SECURITY_WORLD_SID_AUTHORITY 1
94#define SECURITY_LOCAL_SID_AUTHORITY 2
95#define SECURITY_CREATOR_SID_AUTHORITY 3
96#define SECURITY_NT_AUTHORITY 5
97#endif
98
99/*
100 * An NT compatible anonymous token.
101 */
102
103static DOM_SID anon_sid_array[3] =
104{ { 1, 1, {0,0,0,0,0,1}, {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}},
105 { 1, 1, {0,0,0,0,0,5}, {2,0,0,0,0,0,0,0,0,0,0,0,0,0,0}},
106 { 1, 1, {0,0,0,0,0,5}, {7,0,0,0,0,0,0,0,0,0,0,0,0,0,0}} };
107NT_USER_TOKEN anonymous_token = { 3, anon_sid_array, SE_NONE };
108
109static DOM_SID system_sid_array[1] =
110{ { 1, 1, {0,0,0,0,0,5}, {18,0,0,0,0,0,0,0,0,0,0,0,0,0,0}} };
111NT_USER_TOKEN system_token = { 1, system_sid_array, SE_ALL_PRIVS };
112
113/****************************************************************************
114 Lookup string names for SID types.
115****************************************************************************/
116
117static const struct {
118 enum lsa_SidType sid_type;
119 const char *string;
120} sid_name_type[] = {
121 {SID_NAME_USER, "User"},
122 {SID_NAME_DOM_GRP, "Domain Group"},
123 {SID_NAME_DOMAIN, "Domain"},
124 {SID_NAME_ALIAS, "Local Group"},
125 {SID_NAME_WKN_GRP, "Well-known Group"},
126 {SID_NAME_DELETED, "Deleted Account"},
127 {SID_NAME_INVALID, "Invalid Account"},
128 {SID_NAME_UNKNOWN, "UNKNOWN"},
129 {SID_NAME_COMPUTER, "Computer"},
130
131 {(enum lsa_SidType)0, NULL}
132};
133
134const char *sid_type_lookup(uint32 sid_type)
135{
136 int i = 0;
137
138 /* Look through list */
139 while(sid_name_type[i].sid_type != 0) {
140 if (sid_name_type[i].sid_type == sid_type)
141 return sid_name_type[i].string;
142 i++;
143 }
144
145 /* Default return */
146 return "SID *TYPE* is INVALID";
147}
148
149/**************************************************************************
150 Create the SYSTEM token.
151***************************************************************************/
152
153NT_USER_TOKEN *get_system_token(void)
154{
155 return &system_token;
156}
157
158/******************************************************************
159 get the default domain/netbios name to be used when dealing
160 with our passdb list of accounts
161******************************************************************/
162
163const char *get_global_sam_name(void)
164{
165 if ((lp_server_role() == ROLE_DOMAIN_PDC) || (lp_server_role() == ROLE_DOMAIN_BDC)) {
166 return lp_workgroup();
167 }
168 return global_myname();
169}
170
171/*****************************************************************
172 Convert a SID to an ascii string.
173*****************************************************************/
174
175char *sid_to_fstring(fstring sidstr_out, const DOM_SID *sid)
176{
177 char *str = sid_string_talloc(talloc_tos(), sid);
178 fstrcpy(sidstr_out, str);
179 TALLOC_FREE(str);
180 return sidstr_out;
181}
182
183/*****************************************************************
184 Essentially a renamed dom_sid_string from librpc/ndr with a
185 panic if it didn't work
186
187 This introduces a dependency on librpc/ndr/sid.o which can easily
188 be turned around if necessary
189*****************************************************************/
190
191char *sid_string_talloc(TALLOC_CTX *mem_ctx, const DOM_SID *sid)
192{
193 char *result = dom_sid_string(mem_ctx, sid);
194 SMB_ASSERT(result != NULL);
195 return result;
196}
197
198/*****************************************************************
199 Useful function for debug lines.
200*****************************************************************/
201
202char *sid_string_dbg(const DOM_SID *sid)
203{
204 return sid_string_talloc(debug_ctx(), sid);
205}
206
207/*****************************************************************
208 Use with care!
209*****************************************************************/
210
211char *sid_string_tos(const DOM_SID *sid)
212{
213 return sid_string_talloc(talloc_tos(), sid);
214}
215
216/*****************************************************************
217 Convert a string to a SID. Returns True on success, False on fail.
218*****************************************************************/
219
220bool string_to_sid(DOM_SID *sidout, const char *sidstr)
221{
222 const char *p;
223 char *q;
224 /* BIG NOTE: this function only does SIDS where the identauth is not >= 2^32 */
225 uint32 conv;
226
227 if ((sidstr[0] != 'S' && sidstr[0] != 's') || sidstr[1] != '-') {
228 DEBUG(3,("string_to_sid: Sid %s does not start with 'S-'.\n", sidstr));
229 return False;
230 }
231
232 ZERO_STRUCTP(sidout);
233
234 /* Get the revision number. */
235 p = sidstr + 2;
236 conv = (uint32) strtoul(p, &q, 10);
237 if (!q || (*q != '-')) {
238 DEBUG(3,("string_to_sid: Sid %s is not in a valid format.\n", sidstr));
239 return False;
240 }
241 sidout->sid_rev_num = (uint8) conv;
242 q++;
243
244 /* get identauth */
245 conv = (uint32) strtoul(q, &q, 10);
246 if (!q || (*q != '-')) {
247 DEBUG(0,("string_to_sid: Sid %s is not in a valid format.\n", sidstr));
248 return False;
249 }
250 /* identauth in decimal should be < 2^32 */
251 /* NOTE - the conv value is in big-endian format. */
252 sidout->id_auth[0] = 0;
253 sidout->id_auth[1] = 0;
254 sidout->id_auth[2] = (conv & 0xff000000) >> 24;
255 sidout->id_auth[3] = (conv & 0x00ff0000) >> 16;
256 sidout->id_auth[4] = (conv & 0x0000ff00) >> 8;
257 sidout->id_auth[5] = (conv & 0x000000ff);
258
259 q++;
260 sidout->num_auths = 0;
261
262 for(conv = (uint32) strtoul(q, &q, 10);
263 q && (*q =='-' || *q =='\0') && (sidout->num_auths < MAXSUBAUTHS);
264 conv = (uint32) strtoul(q, &q, 10)) {
265 sid_append_rid(sidout, conv);
266 if (*q == '\0')
267 break;
268 q++;
269 }
270
271 return True;
272}
273
274DOM_SID *string_sid_talloc(TALLOC_CTX *mem_ctx, const char *sidstr)
275{
276 DOM_SID *result = TALLOC_P(mem_ctx, DOM_SID);
277
278 if (result == NULL)
279 return NULL;
280
281 if (!string_to_sid(result, sidstr))
282 return NULL;
283
284 return result;
285}
286
287/*****************************************************************
288 Add a rid to the end of a sid
289*****************************************************************/
290
291bool sid_append_rid(DOM_SID *sid, uint32 rid)
292{
293 if (sid->num_auths < MAXSUBAUTHS) {
294 sid->sub_auths[sid->num_auths++] = rid;
295 return True;
296 }
297 return False;
298}
299
300bool sid_compose(DOM_SID *dst, const DOM_SID *domain_sid, uint32 rid)
301{
302 sid_copy(dst, domain_sid);
303 return sid_append_rid(dst, rid);
304}
305
306/*****************************************************************
307 Removes the last rid from the end of a sid
308*****************************************************************/
309
310bool sid_split_rid(DOM_SID *sid, uint32 *rid)
311{
312 if (sid->num_auths > 0) {
313 sid->num_auths--;
314 *rid = sid->sub_auths[sid->num_auths];
315 return True;
316 }
317 return False;
318}
319
320/*****************************************************************
321 Return the last rid from the end of a sid
322*****************************************************************/
323
324bool sid_peek_rid(const DOM_SID *sid, uint32 *rid)
325{
326 if (!sid || !rid)
327 return False;
328
329 if (sid->num_auths > 0) {
330 *rid = sid->sub_auths[sid->num_auths - 1];
331 return True;
332 }
333 return False;
334}
335
336/*****************************************************************
337 Return the last rid from the end of a sid
338 and check the sid against the exp_dom_sid
339*****************************************************************/
340
341bool sid_peek_check_rid(const DOM_SID *exp_dom_sid, const DOM_SID *sid, uint32 *rid)
342{
343 if (!exp_dom_sid || !sid || !rid)
344 return False;
345
346 if (sid->num_auths != (exp_dom_sid->num_auths+1)) {
347 return False;
348 }
349
350 if (sid_compare_domain(exp_dom_sid, sid)!=0){
351 *rid=(-1);
352 return False;
353 }
354
355 return sid_peek_rid(sid, rid);
356}
357
358/*****************************************************************
359 Copies a sid
360*****************************************************************/
361
362void sid_copy(DOM_SID *dst, const DOM_SID *src)
363{
364 int i;
365
366 ZERO_STRUCTP(dst);
367
368 dst->sid_rev_num = src->sid_rev_num;
369 dst->num_auths = src->num_auths;
370
371 memcpy(&dst->id_auth[0], &src->id_auth[0], sizeof(src->id_auth));
372
373 for (i = 0; i < src->num_auths; i++)
374 dst->sub_auths[i] = src->sub_auths[i];
375}
376
377/*****************************************************************
378 Write a sid out into on-the-wire format.
379*****************************************************************/
380
381bool sid_linearize(char *outbuf, size_t len, const DOM_SID *sid)
382{
383 size_t i;
384
385 if (len < ndr_size_dom_sid(sid, 0))
386 return False;
387
388 SCVAL(outbuf,0,sid->sid_rev_num);
389 SCVAL(outbuf,1,sid->num_auths);
390 memcpy(&outbuf[2], sid->id_auth, 6);
391 for(i = 0; i < sid->num_auths; i++)
392 SIVAL(outbuf, 8 + (i*4), sid->sub_auths[i]);
393
394 return True;
395}
396
397/*****************************************************************
398 Parse a on-the-wire SID to a DOM_SID.
399*****************************************************************/
400
401bool sid_parse(const char *inbuf, size_t len, DOM_SID *sid)
402{
403 int i;
404 if (len < 8)
405 return False;
406
407 ZERO_STRUCTP(sid);
408
409 sid->sid_rev_num = CVAL(inbuf, 0);
410 sid->num_auths = CVAL(inbuf, 1);
411 if (sid->num_auths > MAXSUBAUTHS) {
412 return false;
413 }
414 memcpy(sid->id_auth, inbuf+2, 6);
415 if (len < 8 + sid->num_auths*4)
416 return False;
417 for (i=0;i<sid->num_auths;i++)
418 sid->sub_auths[i] = IVAL(inbuf, 8+i*4);
419 return True;
420}
421
422/*****************************************************************
423 Compare the auth portion of two sids.
424*****************************************************************/
425
426static int sid_compare_auth(const DOM_SID *sid1, const DOM_SID *sid2)
427{
428 int i;
429
430 if (sid1 == sid2)
431 return 0;
432 if (!sid1)
433 return -1;
434 if (!sid2)
435 return 1;
436
437 if (sid1->sid_rev_num != sid2->sid_rev_num)
438 return sid1->sid_rev_num - sid2->sid_rev_num;
439
440 for (i = 0; i < 6; i++)
441 if (sid1->id_auth[i] != sid2->id_auth[i])
442 return sid1->id_auth[i] - sid2->id_auth[i];
443
444 return 0;
445}
446
447/*****************************************************************
448 Compare two sids.
449*****************************************************************/
450
451int sid_compare(const DOM_SID *sid1, const DOM_SID *sid2)
452{
453 int i;
454
455 if (sid1 == sid2)
456 return 0;
457 if (!sid1)
458 return -1;
459 if (!sid2)
460 return 1;
461
462 /* Compare most likely different rids, first: i.e start at end */
463 if (sid1->num_auths != sid2->num_auths)
464 return sid1->num_auths - sid2->num_auths;
465
466 for (i = sid1->num_auths-1; i >= 0; --i)
467 if (sid1->sub_auths[i] != sid2->sub_auths[i])
468 return sid1->sub_auths[i] - sid2->sub_auths[i];
469
470 return sid_compare_auth(sid1, sid2);
471}
472
473/*****************************************************************
474 See if 2 SIDs are in the same domain
475 this just compares the leading sub-auths
476*****************************************************************/
477
478int sid_compare_domain(const DOM_SID *sid1, const DOM_SID *sid2)
479{
480 int n, i;
481
482 n = MIN(sid1->num_auths, sid2->num_auths);
483
484 for (i = n-1; i >= 0; --i)
485 if (sid1->sub_auths[i] != sid2->sub_auths[i])
486 return sid1->sub_auths[i] - sid2->sub_auths[i];
487
488 return sid_compare_auth(sid1, sid2);
489}
490
491/*****************************************************************
492 Compare two sids.
493*****************************************************************/
494
495bool sid_equal(const DOM_SID *sid1, const DOM_SID *sid2)
496{
497 return sid_compare(sid1, sid2) == 0;
498}
499
500/*****************************************************************
501 Returns true if SID is internal (and non-mappable).
502*****************************************************************/
503
504bool non_mappable_sid(DOM_SID *sid)
505{
506 DOM_SID dom;
507 uint32 rid;
508
509 sid_copy(&dom, sid);
510 sid_split_rid(&dom, &rid);
511
512 if (sid_equal(&dom, &global_sid_Builtin))
513 return True;
514
515 if (sid_equal(&dom, &global_sid_NT_Authority))
516 return True;
517
518 return False;
519}
520
521/*****************************************************************
522 Return the binary string representation of a DOM_SID.
523 Caller must free.
524*****************************************************************/
525
526char *sid_binstring(const DOM_SID *sid)
527{
528 char *buf, *s;
529 int len = ndr_size_dom_sid(sid, 0);
530 buf = (char *)SMB_MALLOC(len);
531 if (!buf)
532 return NULL;
533 sid_linearize(buf, len, sid);
534 s = binary_string_rfc2254(buf, len);
535 free(buf);
536 return s;
537}
538
539/*****************************************************************
540 Return the binary string representation of a DOM_SID.
541 Caller must free.
542*****************************************************************/
543
544char *sid_binstring_hex(const DOM_SID *sid)
545{
546 char *buf, *s;
547 int len = ndr_size_dom_sid(sid, 0);
548 buf = (char *)SMB_MALLOC(len);
549 if (!buf)
550 return NULL;
551 sid_linearize(buf, len, sid);
552 s = binary_string(buf, len);
553 free(buf);
554 return s;
555}
556
557/*******************************************************************
558 Tallocs a duplicate SID.
559********************************************************************/
560
561DOM_SID *sid_dup_talloc(TALLOC_CTX *ctx, const DOM_SID *src)
562{
563 DOM_SID *dst;
564
565 if(!src)
566 return NULL;
567
568 if((dst = TALLOC_ZERO_P(ctx, DOM_SID)) != NULL) {
569 sid_copy( dst, src);
570 }
571
572 return dst;
573}
574
575/********************************************************************
576 Add SID to an array SIDs
577********************************************************************/
578
579NTSTATUS add_sid_to_array(TALLOC_CTX *mem_ctx, const DOM_SID *sid,
580 DOM_SID **sids, size_t *num)
581{
582 *sids = TALLOC_REALLOC_ARRAY(mem_ctx, *sids, DOM_SID,
583 (*num)+1);
584 if (*sids == NULL) {
585 *num = 0;
586 return NT_STATUS_NO_MEMORY;
587 }
588
589 sid_copy(&((*sids)[*num]), sid);
590 *num += 1;
591
592 return NT_STATUS_OK;
593}
594
595
596/********************************************************************
597 Add SID to an array SIDs ensuring that it is not already there
598********************************************************************/
599
600NTSTATUS add_sid_to_array_unique(TALLOC_CTX *mem_ctx, const DOM_SID *sid,
601 DOM_SID **sids, size_t *num_sids)
602{
603 size_t i;
604
605 for (i=0; i<(*num_sids); i++) {
606 if (sid_compare(sid, &(*sids)[i]) == 0)
607 return NT_STATUS_OK;
608 }
609
610 return add_sid_to_array(mem_ctx, sid, sids, num_sids);
611}
612
613/********************************************************************
614 Remove SID from an array
615********************************************************************/
616
617void del_sid_from_array(const DOM_SID *sid, DOM_SID **sids, size_t *num)
618{
619 DOM_SID *sid_list = *sids;
620 size_t i;
621
622 for ( i=0; i<*num; i++ ) {
623
624 /* if we find the SID, then decrement the count
625 and break out of the loop */
626
627 if ( sid_equal(sid, &sid_list[i]) ) {
628 *num -= 1;
629 break;
630 }
631 }
632
633 /* This loop will copy the remainder of the array
634 if i < num of sids ni the array */
635
636 for ( ; i<*num; i++ )
637 sid_copy( &sid_list[i], &sid_list[i+1] );
638
639 return;
640}
641
642bool add_rid_to_array_unique(TALLOC_CTX *mem_ctx,
643 uint32 rid, uint32 **pp_rids, size_t *p_num)
644{
645 size_t i;
646
647 for (i=0; i<*p_num; i++) {
648 if ((*pp_rids)[i] == rid)
649 return True;
650 }
651
652 *pp_rids = TALLOC_REALLOC_ARRAY(mem_ctx, *pp_rids, uint32, *p_num+1);
653
654 if (*pp_rids == NULL) {
655 *p_num = 0;
656 return False;
657 }
658
659 (*pp_rids)[*p_num] = rid;
660 *p_num += 1;
661 return True;
662}
663
664bool is_null_sid(const DOM_SID *sid)
665{
666 static const DOM_SID null_sid = {0};
667 return sid_equal(sid, &null_sid);
668}
669
670bool is_sid_in_token(const NT_USER_TOKEN *token, const DOM_SID *sid)
671{
672 int i;
673
674 for (i=0; i<token->num_sids; i++) {
675 if (sid_compare(sid, &token->user_sids[i]) == 0)
676 return true;
677 }
678 return false;
679}
680
681NTSTATUS sid_array_from_info3(TALLOC_CTX *mem_ctx,
682 const struct netr_SamInfo3 *info3,
683 DOM_SID **user_sids,
684 size_t *num_user_sids,
685 bool include_user_group_rid,
686 bool skip_ressource_groups)
687{
688 NTSTATUS status;
689 DOM_SID sid;
690 DOM_SID *sid_array = NULL;
691 size_t num_sids = 0;
692 int i;
693
694 if (include_user_group_rid) {
695 if (!sid_compose(&sid, info3->base.domain_sid, info3->base.rid)) {
696 DEBUG(3, ("could not compose user SID from rid 0x%x\n",
697 info3->base.rid));
698 return NT_STATUS_INVALID_PARAMETER;
699 }
700 status = add_sid_to_array(mem_ctx, &sid, &sid_array, &num_sids);
701 if (!NT_STATUS_IS_OK(status)) {
702 DEBUG(3, ("could not append user SID from rid 0x%x\n",
703 info3->base.rid));
704 return status;
705 }
706 }
707
708 if (!sid_compose(&sid, info3->base.domain_sid, info3->base.primary_gid)) {
709 DEBUG(3, ("could not compose group SID from rid 0x%x\n",
710 info3->base.primary_gid));
711 return NT_STATUS_INVALID_PARAMETER;
712 }
713 status = add_sid_to_array(mem_ctx, &sid, &sid_array, &num_sids);
714 if (!NT_STATUS_IS_OK(status)) {
715 DEBUG(3, ("could not append group SID from rid 0x%x\n",
716 info3->base.rid));
717 return status;
718 }
719
720 for (i = 0; i < info3->base.groups.count; i++) {
721 /* Don't add the primary group sid twice. */
722 if (info3->base.primary_gid == info3->base.groups.rids[i].rid) {
723 continue;
724 }
725 if (!sid_compose(&sid, info3->base.domain_sid,
726 info3->base.groups.rids[i].rid)) {
727 DEBUG(3, ("could not compose SID from additional group "
728 "rid 0x%x\n", info3->base.groups.rids[i].rid));
729 return NT_STATUS_INVALID_PARAMETER;
730 }
731 status = add_sid_to_array(mem_ctx, &sid, &sid_array, &num_sids);
732 if (!NT_STATUS_IS_OK(status)) {
733 DEBUG(3, ("could not append SID from additional group "
734 "rid 0x%x\n", info3->base.groups.rids[i].rid));
735 return status;
736 }
737 }
738
739 /* Copy 'other' sids. We need to do sid filtering here to
740 prevent possible elevation of privileges. See:
741
742 http://www.microsoft.com/windows2000/techinfo/administration/security/sidfilter.asp
743 */
744
745 for (i = 0; i < info3->sidcount; i++) {
746
747 if (skip_ressource_groups &&
748 (info3->sids[i].attributes & SE_GROUP_RESOURCE)) {
749 continue;
750 }
751
752 status = add_sid_to_array(mem_ctx, info3->sids[i].sid,
753 &sid_array, &num_sids);
754 if (!NT_STATUS_IS_OK(status)) {
755 DEBUG(3, ("could not add SID to array: %s\n",
756 sid_string_dbg(info3->sids[i].sid)));
757 return status;
758 }
759 }
760
761 *user_sids = sid_array;
762 *num_user_sids = num_sids;
763
764 return NT_STATUS_OK;
765}
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