source: vendor/3.5.0/source3/lib/util_sid.c

Last change on this file was 414, checked in by Herwig Bauernfeind, 15 years ago

Samba 3.5.0: Initial import
File size: 21.4 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(talloc_tos(), 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, NULL, 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 memcpy(sid->id_auth, inbuf+2, 6);
412 if (len < 8 + sid->num_auths*4)
413 return False;
414 for (i=0;i<sid->num_auths;i++)
415 sid->sub_auths[i] = IVAL(inbuf, 8+i*4);
416 return True;
417}
418
419/*****************************************************************
420 Compare the auth portion of two sids.
421*****************************************************************/
422
423static int sid_compare_auth(const DOM_SID *sid1, const DOM_SID *sid2)
424{
425 int i;
426
427 if (sid1 == sid2)
428 return 0;
429 if (!sid1)
430 return -1;
431 if (!sid2)
432 return 1;
433
434 if (sid1->sid_rev_num != sid2->sid_rev_num)
435 return sid1->sid_rev_num - sid2->sid_rev_num;
436
437 for (i = 0; i < 6; i++)
438 if (sid1->id_auth[i] != sid2->id_auth[i])
439 return sid1->id_auth[i] - sid2->id_auth[i];
440
441 return 0;
442}
443
444/*****************************************************************
445 Compare two sids.
446*****************************************************************/
447
448int sid_compare(const DOM_SID *sid1, const DOM_SID *sid2)
449{
450 int i;
451
452 if (sid1 == sid2)
453 return 0;
454 if (!sid1)
455 return -1;
456 if (!sid2)
457 return 1;
458
459 /* Compare most likely different rids, first: i.e start at end */
460 if (sid1->num_auths != sid2->num_auths)
461 return sid1->num_auths - sid2->num_auths;
462
463 for (i = sid1->num_auths-1; i >= 0; --i)
464 if (sid1->sub_auths[i] != sid2->sub_auths[i])
465 return sid1->sub_auths[i] - sid2->sub_auths[i];
466
467 return sid_compare_auth(sid1, sid2);
468}
469
470/*****************************************************************
471 See if 2 SIDs are in the same domain
472 this just compares the leading sub-auths
473*****************************************************************/
474
475int sid_compare_domain(const DOM_SID *sid1, const DOM_SID *sid2)
476{
477 int n, i;
478
479 n = MIN(sid1->num_auths, sid2->num_auths);
480
481 for (i = n-1; i >= 0; --i)
482 if (sid1->sub_auths[i] != sid2->sub_auths[i])
483 return sid1->sub_auths[i] - sid2->sub_auths[i];
484
485 return sid_compare_auth(sid1, sid2);
486}
487
488/*****************************************************************
489 Compare two sids.
490*****************************************************************/
491
492bool sid_equal(const DOM_SID *sid1, const DOM_SID *sid2)
493{
494 return sid_compare(sid1, sid2) == 0;
495}
496
497/*****************************************************************
498 Returns true if SID is internal (and non-mappable).
499*****************************************************************/
500
501bool non_mappable_sid(DOM_SID *sid)
502{
503 DOM_SID dom;
504 uint32 rid;
505
506 sid_copy(&dom, sid);
507 sid_split_rid(&dom, &rid);
508
509 if (sid_equal(&dom, &global_sid_Builtin))
510 return True;
511
512 if (sid_equal(&dom, &global_sid_NT_Authority))
513 return True;
514
515 return False;
516}
517
518/*****************************************************************
519 Return the binary string representation of a DOM_SID.
520 Caller must free.
521*****************************************************************/
522
523char *sid_binstring(TALLOC_CTX *mem_ctx, const DOM_SID *sid)
524{
525 uint8_t *buf;
526 char *s;
527 int len = ndr_size_dom_sid(sid, NULL, 0);
528 buf = talloc_array(mem_ctx, uint8_t, len);
529 if (!buf) {
530 return NULL;
531 }
532 sid_linearize((char *)buf, len, sid);
533 s = binary_string_rfc2254(mem_ctx, buf, len);
534 TALLOC_FREE(buf);
535 return s;
536}
537
538/*****************************************************************
539 Return the binary string representation of a DOM_SID.
540 Caller must free.
541*****************************************************************/
542
543char *sid_binstring_hex(const DOM_SID *sid)
544{
545 char *buf, *s;
546 int len = ndr_size_dom_sid(sid, NULL, 0);
547 buf = (char *)SMB_MALLOC(len);
548 if (!buf)
549 return NULL;
550 sid_linearize(buf, len, sid);
551 s = binary_string(buf, len);
552 free(buf);
553 return s;
554}
555
556/*******************************************************************
557 Tallocs a duplicate SID.
558********************************************************************/
559
560DOM_SID *sid_dup_talloc(TALLOC_CTX *ctx, const DOM_SID *src)
561{
562 DOM_SID *dst;
563
564 if(!src)
565 return NULL;
566
567 if((dst = TALLOC_ZERO_P(ctx, DOM_SID)) != NULL) {
568 sid_copy( dst, src);
569 }
570
571 return dst;
572}
573
574/********************************************************************
575 Add SID to an array SIDs
576********************************************************************/
577
578NTSTATUS add_sid_to_array(TALLOC_CTX *mem_ctx, const DOM_SID *sid,
579 DOM_SID **sids, size_t *num)
580{
581 *sids = TALLOC_REALLOC_ARRAY(mem_ctx, *sids, DOM_SID,
582 (*num)+1);
583 if (*sids == NULL) {
584 *num = 0;
585 return NT_STATUS_NO_MEMORY;
586 }
587
588 sid_copy(&((*sids)[*num]), sid);
589 *num += 1;
590
591 return NT_STATUS_OK;
592}
593
594
595/********************************************************************
596 Add SID to an array SIDs ensuring that it is not already there
597********************************************************************/
598
599NTSTATUS add_sid_to_array_unique(TALLOC_CTX *mem_ctx, const DOM_SID *sid,
600 DOM_SID **sids, size_t *num_sids)
601{
602 size_t i;
603
604 for (i=0; i<(*num_sids); i++) {
605 if (sid_compare(sid, &(*sids)[i]) == 0)
606 return NT_STATUS_OK;
607 }
608
609 return add_sid_to_array(mem_ctx, sid, sids, num_sids);
610}
611
612/********************************************************************
613 Remove SID from an array
614********************************************************************/
615
616void del_sid_from_array(const DOM_SID *sid, DOM_SID **sids, size_t *num)
617{
618 DOM_SID *sid_list = *sids;
619 size_t i;
620
621 for ( i=0; i<*num; i++ ) {
622
623 /* if we find the SID, then decrement the count
624 and break out of the loop */
625
626 if ( sid_equal(sid, &sid_list[i]) ) {
627 *num -= 1;
628 break;
629 }
630 }
631
632 /* This loop will copy the remainder of the array
633 if i < num of sids ni the array */
634
635 for ( ; i<*num; i++ )
636 sid_copy( &sid_list[i], &sid_list[i+1] );
637
638 return;
639}
640
641bool add_rid_to_array_unique(TALLOC_CTX *mem_ctx,
642 uint32 rid, uint32 **pp_rids, size_t *p_num)
643{
644 size_t i;
645
646 for (i=0; i<*p_num; i++) {
647 if ((*pp_rids)[i] == rid)
648 return True;
649 }
650
651 *pp_rids = TALLOC_REALLOC_ARRAY(mem_ctx, *pp_rids, uint32, *p_num+1);
652
653 if (*pp_rids == NULL) {
654 *p_num = 0;
655 return False;
656 }
657
658 (*pp_rids)[*p_num] = rid;
659 *p_num += 1;
660 return True;
661}
662
663bool is_null_sid(const DOM_SID *sid)
664{
665 static const DOM_SID null_sid = {0};
666 return sid_equal(sid, &null_sid);
667}
668
669bool is_sid_in_token(const NT_USER_TOKEN *token, const DOM_SID *sid)
670{
671 int i;
672
673 for (i=0; i<token->num_sids; i++) {
674 if (sid_compare(sid, &token->user_sids[i]) == 0)
675 return true;
676 }
677 return false;
678}
679
680NTSTATUS sid_array_from_info3(TALLOC_CTX *mem_ctx,
681 const struct netr_SamInfo3 *info3,
682 DOM_SID **user_sids,
683 size_t *num_user_sids,
684 bool include_user_group_rid,
685 bool skip_ressource_groups)
686{
687 NTSTATUS status;
688 DOM_SID sid;
689 DOM_SID *sid_array = NULL;
690 size_t num_sids = 0;
691 int i;
692
693 if (include_user_group_rid) {
694 if (!sid_compose(&sid, info3->base.domain_sid, info3->base.rid)) {
695 DEBUG(3, ("could not compose user SID from rid 0x%x\n",
696 info3->base.rid));
697 return NT_STATUS_INVALID_PARAMETER;
698 }
699 status = add_sid_to_array(mem_ctx, &sid, &sid_array, &num_sids);
700 if (!NT_STATUS_IS_OK(status)) {
701 DEBUG(3, ("could not append user SID from rid 0x%x\n",
702 info3->base.rid));
703 return status;
704 }
705 }
706
707 if (!sid_compose(&sid, info3->base.domain_sid, info3->base.primary_gid)) {
708 DEBUG(3, ("could not compose group SID from rid 0x%x\n",
709 info3->base.primary_gid));
710 return NT_STATUS_INVALID_PARAMETER;
711 }
712 status = add_sid_to_array(mem_ctx, &sid, &sid_array, &num_sids);
713 if (!NT_STATUS_IS_OK(status)) {
714 DEBUG(3, ("could not append group SID from rid 0x%x\n",
715 info3->base.rid));
716 return status;
717 }
718
719 for (i = 0; i < info3->base.groups.count; i++) {
720 /* Don't add the primary group sid twice. */
721 if (info3->base.primary_gid == info3->base.groups.rids[i].rid) {
722 continue;
723 }
724 if (!sid_compose(&sid, info3->base.domain_sid,
725 info3->base.groups.rids[i].rid)) {
726 DEBUG(3, ("could not compose SID from additional group "
727 "rid 0x%x\n", info3->base.groups.rids[i].rid));
728 return NT_STATUS_INVALID_PARAMETER;
729 }
730 status = add_sid_to_array(mem_ctx, &sid, &sid_array, &num_sids);
731 if (!NT_STATUS_IS_OK(status)) {
732 DEBUG(3, ("could not append SID from additional group "
733 "rid 0x%x\n", info3->base.groups.rids[i].rid));
734 return status;
735 }
736 }
737
738 /* Copy 'other' sids. We need to do sid filtering here to
739 prevent possible elevation of privileges. See:
740
741 http://www.microsoft.com/windows2000/techinfo/administration/security/sidfilter.asp
742 */
743
744 for (i = 0; i < info3->sidcount; i++) {
745
746 if (skip_ressource_groups &&
747 (info3->sids[i].attributes & SE_GROUP_RESOURCE)) {
748 continue;
749 }
750
751 status = add_sid_to_array(mem_ctx, info3->sids[i].sid,
752 &sid_array, &num_sids);
753 if (!NT_STATUS_IS_OK(status)) {
754 DEBUG(3, ("could not add SID to array: %s\n",
755 sid_string_dbg(info3->sids[i].sid)));
756 return status;
757 }
758 }
759
760 *user_sids = sid_array;
761 *num_user_sids = num_sids;
762
763 return NT_STATUS_OK;
764}
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