libcli/security: add dom_sid_lookup_is_predefined_domain()
[amitay/samba.git] / libcli / security / util_sid.c
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    Copyright (C) Andrew Bartlett                2010
11
12    This program is free software; you can redistribute it and/or modify
13    it under the terms of the GNU General Public License as published by
14    the Free Software Foundation; either version 3 of the License, or
15    (at your option) any later version.
16
17    This program is distributed in the hope that it will be useful,
18    but WITHOUT ANY WARRANTY; without even the implied warranty of
19    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
20    GNU General Public License for more details.
21
22    You should have received a copy of the GNU General Public License
23    along with this program.  If not, see <http://www.gnu.org/licenses/>.
24 */
25
26 #include "includes.h"
27 #include "../librpc/gen_ndr/ndr_security.h"
28 #include "../librpc/gen_ndr/netlogon.h"
29 #include "../libcli/security/security.h"
30
31 /*
32  * Some useful sids, more well known sids can be found at
33  * http://support.microsoft.com/kb/243330/EN-US/
34  */
35
36
37 /* S-1-1 */
38 const struct dom_sid global_sid_World_Domain =               /* Everyone domain */
39 { 1, 0, {0,0,0,0,0,1}, {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
40 /* S-1-1-0 */
41 const struct dom_sid global_sid_World =                      /* Everyone */
42 { 1, 1, {0,0,0,0,0,1}, {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
43 /* S-1-2 */
44 const struct dom_sid global_sid_Local_Authority =            /* Local Authority */
45 { 1, 0, {0,0,0,0,0,2}, {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
46 /* S-1-3 */
47 const struct dom_sid global_sid_Creator_Owner_Domain =       /* Creator Owner domain */
48 { 1, 0, {0,0,0,0,0,3}, {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
49 /* S-1-5 */
50 const struct dom_sid global_sid_NT_Authority =                  /* NT Authority */
51 { 1, 0, {0,0,0,0,0,5}, {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
52 /* S-1-5-18 */
53 const struct dom_sid global_sid_System =                        /* System */
54 { 1, 1, {0,0,0,0,0,5}, {18,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
55 /* S-1-0-0 */
56 const struct dom_sid global_sid_NULL =                          /* NULL sid */
57 { 1, 1, {0,0,0,0,0,0}, {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
58 /* S-1-5-11 */
59 const struct dom_sid global_sid_Authenticated_Users =   /* All authenticated rids */
60 { 1, 1, {0,0,0,0,0,5}, {11,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
61 #if 0
62 /* for documentation S-1-5-12 */
63 const struct dom_sid global_sid_Restriced =                     /* Restriced Code */
64 { 1, 1, {0,0,0,0,0,5}, {12,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
65 #endif
66
67 /* S-1-18 */
68 const struct dom_sid global_sid_Asserted_Identity =       /* Asserted Identity */
69 { 1, 0, {0,0,0,0,0,18}, {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
70 /* S-1-18-1 */
71 const struct dom_sid global_sid_Asserted_Identity_Service =     /* Asserted Identity Service */
72 { 1, 1, {0,0,0,0,0,18}, {1,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
73 /* S-1-18-2 */
74 const struct dom_sid global_sid_Asserted_Identity_Authentication_Authority =    /* Asserted Identity Authentication Authority */
75 { 1, 1, {0,0,0,0,0,18}, {2,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
76
77 /* S-1-5-2 */
78 const struct dom_sid global_sid_Network =                       /* Network rids */
79 { 1, 1, {0,0,0,0,0,5}, {2,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
80
81 /* S-1-3 */
82 const struct dom_sid global_sid_Creator_Owner =         /* Creator Owner */
83 { 1, 1, {0,0,0,0,0,3}, {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
84 /* S-1-3-1 */
85 const struct dom_sid global_sid_Creator_Group =         /* Creator Group */
86 { 1, 1, {0,0,0,0,0,3}, {1,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
87 /* S-1-3-4 */
88 const struct dom_sid global_sid_Owner_Rights =          /* Owner Rights */
89 { 1, 1, {0,0,0,0,0,3}, {4,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
90 /* S-1-5-7 */
91 const struct dom_sid global_sid_Anonymous =                     /* Anonymous login */
92 { 1, 1, {0,0,0,0,0,5}, {7,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
93 /* S-1-5-9 */
94 const struct dom_sid global_sid_Enterprise_DCs =                /* Enterprise DCs */
95 { 1, 1, {0,0,0,0,0,5}, {9,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
96 /* S-1-5-32 */
97 const struct dom_sid global_sid_Builtin =                       /* Local well-known domain */
98 { 1, 1, {0,0,0,0,0,5}, {32,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
99 /* S-1-5-32-544 */
100 const struct dom_sid global_sid_Builtin_Administrators =        /* Builtin administrators */
101 { 1, 2, {0,0,0,0,0,5}, {32,544,0,0,0,0,0,0,0,0,0,0,0,0,0}};
102 /* S-1-5-32-545 */
103 const struct dom_sid global_sid_Builtin_Users =         /* Builtin users */
104 { 1, 2, {0,0,0,0,0,5}, {32,545,0,0,0,0,0,0,0,0,0,0,0,0,0}};
105 /* S-1-5-32-546 */
106 const struct dom_sid global_sid_Builtin_Guests =                /* Builtin guest users */
107 { 1, 2, {0,0,0,0,0,5}, {32,546,0,0,0,0,0,0,0,0,0,0,0,0,0}};
108 /* S-1-5-32-547 */
109 const struct dom_sid global_sid_Builtin_Power_Users =   /* Builtin power users */
110 { 1, 2, {0,0,0,0,0,5}, {32,547,0,0,0,0,0,0,0,0,0,0,0,0,0}};
111 /* S-1-5-32-548 */
112 const struct dom_sid global_sid_Builtin_Account_Operators =     /* Builtin account operators */
113 { 1, 2, {0,0,0,0,0,5}, {32,548,0,0,0,0,0,0,0,0,0,0,0,0,0}};
114 /* S-1-5-32-549 */
115 const struct dom_sid global_sid_Builtin_Server_Operators =      /* Builtin server operators */
116 { 1, 2, {0,0,0,0,0,5}, {32,549,0,0,0,0,0,0,0,0,0,0,0,0,0}};
117 /* S-1-5-32-550 */
118 const struct dom_sid global_sid_Builtin_Print_Operators =       /* Builtin print operators */
119 { 1, 2, {0,0,0,0,0,5}, {32,550,0,0,0,0,0,0,0,0,0,0,0,0,0}};
120 /* S-1-5-32-551 */
121 const struct dom_sid global_sid_Builtin_Backup_Operators =      /* Builtin backup operators */
122 { 1, 2, {0,0,0,0,0,5}, {32,551,0,0,0,0,0,0,0,0,0,0,0,0,0}};
123 /* S-1-5-32-552 */
124 const struct dom_sid global_sid_Builtin_Replicator =            /* Builtin replicator */
125 { 1, 2, {0,0,0,0,0,5}, {32,552,0,0,0,0,0,0,0,0,0,0,0,0,0}};
126 /* S-1-5-32-554 */
127 const struct dom_sid global_sid_Builtin_PreWin2kAccess =        /* Builtin pre win2k access */
128 { 1, 2, {0,0,0,0,0,5}, {32,554,0,0,0,0,0,0,0,0,0,0,0,0,0}};
129
130 /* S-1-22-1 */
131 const struct dom_sid global_sid_Unix_Users =                    /* Unmapped Unix users */
132 { 1, 1, {0,0,0,0,0,22}, {1,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
133 /* S-1-22-2 */
134 const struct dom_sid global_sid_Unix_Groups =                   /* Unmapped Unix groups */
135 { 1, 1, {0,0,0,0,0,22}, {2,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
136
137 /*
138  * http://technet.microsoft.com/en-us/library/hh509017(v=ws.10).aspx
139  */
140 /* S-1-5-88 */
141 const struct dom_sid global_sid_Unix_NFS =             /* MS NFS and Apple style */
142 { 1, 1, {0,0,0,0,0,5}, {88,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
143 /* S-1-5-88-1 */
144 const struct dom_sid global_sid_Unix_NFS_Users =                /* Unix uid, MS NFS and Apple style */
145 { 1, 2, {0,0,0,0,0,5}, {88,1,0,0,0,0,0,0,0,0,0,0,0,0,0}};
146 /* S-1-5-88-2 */
147 const struct dom_sid global_sid_Unix_NFS_Groups =               /* Unix gid, MS NFS and Apple style */
148 { 1, 2, {0,0,0,0,0,5}, {88,2,0,0,0,0,0,0,0,0,0,0,0,0,0}};
149 /* S-1-5-88-3 */
150 const struct dom_sid global_sid_Unix_NFS_Mode =                 /* Unix mode */
151 { 1, 2, {0,0,0,0,0,5}, {88,3,0,0,0,0,0,0,0,0,0,0,0,0,0}};
152 /* Unused, left here for documentary purposes */
153 #if 0
154 const struct dom_sid global_sid_Unix_NFS_Other =                /* Unix other, MS NFS and Apple style */
155 { 1, 2, {0,0,0,0,0,5}, {88,4,0,0,0,0,0,0,0,0,0,0,0,0,0}};
156 #endif
157
158 /* Unused, left here for documentary purposes */
159 #if 0
160 #define SECURITY_NULL_SID_AUTHORITY    0
161 #define SECURITY_WORLD_SID_AUTHORITY   1
162 #define SECURITY_LOCAL_SID_AUTHORITY   2
163 #define SECURITY_CREATOR_SID_AUTHORITY 3
164 #define SECURITY_NT_AUTHORITY          5
165 #endif
166
167 static struct dom_sid system_sid_array[1] =
168 { { 1, 1, {0,0,0,0,0,5}, {18,0,0,0,0,0,0,0,0,0,0,0,0,0,0}} };
169 static const struct security_token system_token = {
170         .num_sids       = ARRAY_SIZE(system_sid_array),
171         .sids           = system_sid_array,
172         .privilege_mask = SE_ALL_PRIVS
173 };
174
175 /****************************************************************************
176  Lookup string names for SID types.
177 ****************************************************************************/
178
179 static const struct {
180         enum lsa_SidType sid_type;
181         const char *string;
182 } sid_name_type[] = {
183         {SID_NAME_USE_NONE, "None"},
184         {SID_NAME_USER, "User"},
185         {SID_NAME_DOM_GRP, "Domain Group"},
186         {SID_NAME_DOMAIN, "Domain"},
187         {SID_NAME_ALIAS, "Local Group"},
188         {SID_NAME_WKN_GRP, "Well-known Group"},
189         {SID_NAME_DELETED, "Deleted Account"},
190         {SID_NAME_INVALID, "Invalid Account"},
191         {SID_NAME_UNKNOWN, "UNKNOWN"},
192         {SID_NAME_COMPUTER, "Computer"},
193         {SID_NAME_LABEL, "Mandatory Label"}
194 };
195
196 const char *sid_type_lookup(uint32_t sid_type)
197 {
198         size_t i;
199
200         /* Look through list */
201         for (i=0; i < ARRAY_SIZE(sid_name_type); i++) {
202                 if (sid_name_type[i].sid_type == sid_type) {
203                         return sid_name_type[i].string;
204                 }
205         }
206
207         /* Default return */
208         return "SID *TYPE* is INVALID";
209 }
210
211 /**************************************************************************
212  Create the SYSTEM token.
213 ***************************************************************************/
214
215 const struct security_token *get_system_token(void)
216 {
217         return &system_token;
218 }
219
220 bool sid_compose(struct dom_sid *dst, const struct dom_sid *domain_sid, uint32_t rid)
221 {
222         sid_copy(dst, domain_sid);
223         return sid_append_rid(dst, rid);
224 }
225
226 /*****************************************************************
227  Removes the last rid from the end of a sid
228 *****************************************************************/
229
230 bool sid_split_rid(struct dom_sid *sid, uint32_t *rid)
231 {
232         if (sid->num_auths > 0) {
233                 sid->num_auths--;
234                 if (rid != NULL) {
235                         *rid = sid->sub_auths[sid->num_auths];
236                 }
237                 return true;
238         }
239         return false;
240 }
241
242 /*****************************************************************
243  Return the last rid from the end of a sid
244 *****************************************************************/
245
246 bool sid_peek_rid(const struct dom_sid *sid, uint32_t *rid)
247 {
248         if (!sid || !rid)
249                 return false;
250
251         if (sid->num_auths > 0) {
252                 *rid = sid->sub_auths[sid->num_auths - 1];
253                 return true;
254         }
255         return false;
256 }
257
258 /*****************************************************************
259  Return the last rid from the end of a sid
260  and check the sid against the exp_dom_sid
261 *****************************************************************/
262
263 bool sid_peek_check_rid(const struct dom_sid *exp_dom_sid, const struct dom_sid *sid, uint32_t *rid)
264 {
265         if (!exp_dom_sid || !sid || !rid)
266                 return false;
267
268         if (sid->num_auths != (exp_dom_sid->num_auths+1)) {
269                 return false;
270         }
271
272         if (sid_compare_domain(exp_dom_sid, sid)!=0){
273                 *rid=(-1);
274                 return false;
275         }
276
277         return sid_peek_rid(sid, rid);
278 }
279
280 /*****************************************************************
281  Copies a sid
282 *****************************************************************/
283
284 void sid_copy(struct dom_sid *dst, const struct dom_sid *src)
285 {
286         int i;
287
288         *dst = (struct dom_sid) {
289                 .sid_rev_num = src->sid_rev_num,
290                 .num_auths = src->num_auths,
291         };
292
293         memcpy(&dst->id_auth[0], &src->id_auth[0], sizeof(src->id_auth));
294
295         for (i = 0; i < src->num_auths; i++)
296                 dst->sub_auths[i] = src->sub_auths[i];
297 }
298
299 /*****************************************************************
300  Parse a on-the-wire SID to a struct dom_sid.
301 *****************************************************************/
302
303 bool sid_parse(const uint8_t *inbuf, size_t len, struct dom_sid *sid)
304 {
305         DATA_BLOB in = data_blob_const(inbuf, len);
306         enum ndr_err_code ndr_err;
307
308         ndr_err = ndr_pull_struct_blob_all(
309                 &in, NULL, sid, (ndr_pull_flags_fn_t)ndr_pull_dom_sid);
310         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
311                 return false;
312         }
313         return true;
314 }
315
316 /*****************************************************************
317  See if 2 SIDs are in the same domain
318  this just compares the leading sub-auths
319 *****************************************************************/
320
321 int sid_compare_domain(const struct dom_sid *sid1, const struct dom_sid *sid2)
322 {
323         int n, i;
324
325         n = MIN(sid1->num_auths, sid2->num_auths);
326
327         for (i = n-1; i >= 0; --i)
328                 if (sid1->sub_auths[i] != sid2->sub_auths[i])
329                         return sid1->sub_auths[i] - sid2->sub_auths[i];
330
331         return dom_sid_compare_auth(sid1, sid2);
332 }
333
334 /********************************************************************
335  Add SID to an array SIDs
336 ********************************************************************/
337
338 NTSTATUS add_sid_to_array(TALLOC_CTX *mem_ctx, const struct dom_sid *sid,
339                           struct dom_sid **sids, uint32_t *num)
340 {
341         struct dom_sid *tmp;
342
343         if ((*num) == UINT32_MAX) {
344                 return NT_STATUS_INTEGER_OVERFLOW;
345         }
346
347         tmp = talloc_realloc(mem_ctx, *sids, struct dom_sid, (*num)+1);
348         if (tmp == NULL) {
349                 *num = 0;
350                 return NT_STATUS_NO_MEMORY;
351         }
352         *sids = tmp;
353
354         sid_copy(&((*sids)[*num]), sid);
355         *num += 1;
356
357         return NT_STATUS_OK;
358 }
359
360
361 /********************************************************************
362  Add SID to an array SIDs ensuring that it is not already there
363 ********************************************************************/
364
365 NTSTATUS add_sid_to_array_unique(TALLOC_CTX *mem_ctx, const struct dom_sid *sid,
366                                  struct dom_sid **sids, uint32_t *num_sids)
367 {
368         uint32_t i;
369
370         for (i=0; i<(*num_sids); i++) {
371                 if (dom_sid_equal(sid, &(*sids)[i])) {
372                         return NT_STATUS_OK;
373                 }
374         }
375
376         return add_sid_to_array(mem_ctx, sid, sids, num_sids);
377 }
378
379 /********************************************************************
380  Remove SID from an array
381 ********************************************************************/
382
383 void del_sid_from_array(const struct dom_sid *sid, struct dom_sid **sids,
384                         uint32_t *num)
385 {
386         struct dom_sid *sid_list = *sids;
387         uint32_t i;
388
389         for ( i=0; i<*num; i++ ) {
390
391                 /* if we find the SID, then decrement the count
392                    and break out of the loop */
393
394                 if (dom_sid_equal(sid, &sid_list[i])) {
395                         *num -= 1;
396                         break;
397                 }
398         }
399
400         /* This loop will copy the remainder of the array
401            if i < num of sids in the array */
402
403         for ( ; i<*num; i++ ) {
404                 sid_copy( &sid_list[i], &sid_list[i+1] );
405         }
406
407         return;
408 }
409
410 bool add_rid_to_array_unique(TALLOC_CTX *mem_ctx,
411                              uint32_t rid, uint32_t **pp_rids, size_t *p_num)
412 {
413         size_t i;
414
415         for (i=0; i<*p_num; i++) {
416                 if ((*pp_rids)[i] == rid)
417                         return true;
418         }
419
420         *pp_rids = talloc_realloc(mem_ctx, *pp_rids, uint32_t, *p_num+1);
421
422         if (*pp_rids == NULL) {
423                 *p_num = 0;
424                 return false;
425         }
426
427         (*pp_rids)[*p_num] = rid;
428         *p_num += 1;
429         return true;
430 }
431
432 bool is_null_sid(const struct dom_sid *sid)
433 {
434         const struct dom_sid null_sid = {0};
435         return dom_sid_equal(sid, &null_sid);
436 }
437
438 /*
439  * See [MS-LSAT] 3.1.1.1.1 Predefined Translation Database and Corresponding View
440  */
441 struct predefined_name_mapping {
442         const char *name;
443         enum lsa_SidType type;
444         struct dom_sid sid;
445 };
446
447 struct predefined_domain_mapping {
448         const char *domain;
449         struct dom_sid sid;
450         size_t num_names;
451         const struct predefined_name_mapping *names;
452 };
453
454 /* S-1-${AUTHORITY} */
455 #define _SID0(authority) \
456         { 1, 0, {0,0,0,0,0,authority}, {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}}
457 /* S-1-${AUTHORITY}-${SUB1} */
458 #define _SID1(authority,sub1) \
459         { 1, 1, {0,0,0,0,0,authority}, {sub1,0,0,0,0,0,0,0,0,0,0,0,0,0,0}}
460 /* S-1-${AUTHORITY}-${SUB1}-${SUB2} */
461 #define _SID2(authority,sub1,sub2) \
462         { 1, 2, {0,0,0,0,0,authority}, {sub1,sub2,0,0,0,0,0,0,0,0,0,0,0,0,0}}
463
464 /*
465  * S-1-0
466  */
467 static const struct predefined_name_mapping predefined_names_S_1_0[] = {
468         {
469                 .name = "NULL SID",
470                 .type = SID_NAME_WKN_GRP,
471                 .sid = _SID1(0, 0), /* S-1-0-0 */
472         },
473 };
474
475 /*
476  * S-1-1
477  */
478 static const struct predefined_name_mapping predefined_names_S_1_1[] = {
479         {
480                 .name = "Everyone",
481                 .type = SID_NAME_WKN_GRP,
482                 .sid = _SID1(1, 0), /* S-1-1-0 */
483         },
484 };
485
486 /*
487  * S-1-2
488  */
489 static const struct predefined_name_mapping predefined_names_S_1_2[] = {
490         {
491                 .name = "LOCAL",
492                 .type = SID_NAME_WKN_GRP,
493                 .sid = _SID1(2, 0), /* S-1-2-0 */
494         },
495 };
496
497 /*
498  * S-1-3
499  */
500 static const struct predefined_name_mapping predefined_names_S_1_3[] = {
501         {
502                 .name = "CREATOR OWNER",
503                 .type = SID_NAME_WKN_GRP,
504                 .sid = _SID1(3, 0), /* S-1-3-0 */
505         },
506         {
507                 .name = "CREATOR GROUP",
508                 .type = SID_NAME_WKN_GRP,
509                 .sid = _SID1(3, 1), /* S-1-3-1 */
510         },
511         {
512                 .name = "CREATOR OWNER SERVER",
513                 .type = SID_NAME_WKN_GRP,
514                 .sid = _SID1(3, 0), /* S-1-3-2 */
515         },
516         {
517                 .name = "CREATOR GROUP SERVER",
518                 .type = SID_NAME_WKN_GRP,
519                 .sid = _SID1(3, 1), /* S-1-3-3 */
520         },
521         {
522                 .name = "OWNER RIGHTS",
523                 .type = SID_NAME_WKN_GRP,
524                 .sid = _SID1(3, 4), /* S-1-3-4 */
525         },
526 };
527
528 /*
529  * S-1-5 only 'NT Pseudo Domain'
530  */
531 static const struct predefined_name_mapping predefined_names_S_1_5p[] = {
532         {
533                 .name = "NT Pseudo Domain",
534                 .type = SID_NAME_DOMAIN,
535                 .sid = _SID0(5), /* S-1-5 */
536         },
537 };
538
539 /*
540  * S-1-5 'NT AUTHORITY'
541  */
542 static const struct predefined_name_mapping predefined_names_S_1_5a[] = {
543         {
544                 .name = "DIALUP",
545                 .type = SID_NAME_WKN_GRP,
546                 .sid = _SID1(5, 1), /* S-1-5-1 */
547         },
548         {
549                 .name = "NETWORK",
550                 .type = SID_NAME_WKN_GRP,
551                 .sid = _SID1(5, 2), /* S-1-5-2 */
552         },
553         {
554                 .name = "BATCH",
555                 .type = SID_NAME_WKN_GRP,
556                 .sid = _SID1(5, 3), /* S-1-5-3 */
557         },
558         {
559                 .name = "INTERACTIVE",
560                 .type = SID_NAME_WKN_GRP,
561                 .sid = _SID1(5, 4), /* S-1-5-4 */
562         },
563         {
564                 .name = "SERVICE",
565                 .type = SID_NAME_WKN_GRP,
566                 .sid = _SID1(5, 6), /* S-1-5-6 */
567         },
568         {
569                 .name = "ANONYMOUS LOGON",
570                 .type = SID_NAME_WKN_GRP,
571                 .sid = _SID1(5, 7), /* S-1-5-7 */
572         },
573         {
574                 .name = "PROXY",
575                 .type = SID_NAME_WKN_GRP,
576                 .sid = _SID1(5, 8), /* S-1-5-8 */
577         },
578         {
579                 .name = "ENTERPRISE DOMAIN CONTROLLERS",
580                 .type = SID_NAME_WKN_GRP,
581                 .sid = _SID1(5, 9), /* S-1-5-9 */
582         },
583         {
584                 .name = "SELF",
585                 .type = SID_NAME_WKN_GRP,
586                 .sid = _SID1(5, 10), /* S-1-5-10 */
587         },
588         {
589                 .name = "Authenticated Users",
590                 .type = SID_NAME_WKN_GRP,
591                 .sid = _SID1(5, 11), /* S-1-5-11 */
592         },
593         {
594                 .name = "RESTRICTED",
595                 .type = SID_NAME_WKN_GRP,
596                 .sid = _SID1(5, 12), /* S-1-5-12 */
597         },
598         {
599                 .name = "TERMINAL SERVER USER",
600                 .type = SID_NAME_WKN_GRP,
601                 .sid = _SID1(5, 13), /* S-1-5-13 */
602         },
603         {
604                 .name = "REMOTE INTERACTIVE LOGON",
605                 .type = SID_NAME_WKN_GRP,
606                 .sid = _SID1(5, 14), /* S-1-5-14 */
607         },
608         {
609                 .name = "This Organization",
610                 .type = SID_NAME_WKN_GRP,
611                 .sid = _SID1(5, 15), /* S-1-5-15 */
612         },
613         {
614                 .name = "IUSR",
615                 .type = SID_NAME_WKN_GRP,
616                 .sid = _SID1(5, 17), /* S-1-5-17 */
617         },
618         {
619                 .name = "SYSTEM",
620                 .type = SID_NAME_WKN_GRP,
621                 .sid = _SID1(5, 18), /* S-1-5-18 */
622         },
623         {
624                 .name = "LOCAL SERVICE",
625                 .type = SID_NAME_WKN_GRP,
626                 .sid = _SID1(5, 19), /* S-1-5-19 */
627         },
628         {
629                 .name = "NETWORK SERVICE",
630                 .type = SID_NAME_WKN_GRP,
631                 .sid = _SID1(5, 20), /* S-1-5-20 */
632         },
633         {
634                 .name = "WRITE RESTRICTED",
635                 .type = SID_NAME_WKN_GRP,
636                 .sid = _SID1(5, 33), /* S-1-5-33 */
637         },
638         {
639                 .name = "Other Organization",
640                 .type = SID_NAME_WKN_GRP,
641                 .sid = _SID1(5, 1000), /* S-1-5-1000 */
642         },
643 };
644
645 /*
646  * S-1-5-32
647  */
648 static const struct predefined_name_mapping predefined_names_S_1_5_32[] = {
649         {
650                 .name = "BUILTIN",
651                 .type = SID_NAME_DOMAIN,
652                 .sid = _SID1(5, 32), /* S-1-5-32 */
653         },
654 };
655
656 /*
657  * S-1-5-64
658  */
659 static const struct predefined_name_mapping predefined_names_S_1_5_64[] = {
660         {
661                 .name = "NTLM Authentication",
662                 .type = SID_NAME_WKN_GRP,
663                 .sid = _SID2(5, 64, 10), /* S-1-5-64-10 */
664         },
665         {
666                 .name = "SChannel Authentication",
667                 .type = SID_NAME_WKN_GRP,
668                 .sid = _SID2(5, 64, 14), /* S-1-5-64-14 */
669         },
670         {
671                 .name = "Digest Authentication",
672                 .type = SID_NAME_WKN_GRP,
673                 .sid = _SID2(5, 64, 21), /* S-1-5-64-21 */
674         },
675 };
676
677 /*
678  * S-1-7
679  */
680 static const struct predefined_name_mapping predefined_names_S_1_7[] = {
681         {
682                 .name = "Internet$",
683                 .type = SID_NAME_DOMAIN,
684                 .sid = _SID0(7), /* S-1-7 */
685         },
686 };
687
688 /*
689  * S-1-16
690  */
691 static const struct predefined_name_mapping predefined_names_S_1_16[] = {
692         {
693                 .name = "Mandatory Label",
694                 .type = SID_NAME_DOMAIN,
695                 .sid = _SID0(16), /* S-1-16 */
696         },
697         {
698                 .name = "Untrusted Mandatory Level",
699                 .type = SID_NAME_LABEL,
700                 .sid = _SID1(16, 0), /* S-1-16-0 */
701         },
702         {
703                 .name = "Low Mandatory Level",
704                 .type = SID_NAME_LABEL,
705                 .sid = _SID1(16, 4096), /* S-1-16-4096 */
706         },
707         {
708                 .name = "Medium Mandatory Level",
709                 .type = SID_NAME_LABEL,
710                 .sid = _SID1(16, 8192), /* S-1-16-8192 */
711         },
712         {
713                 .name = "High Mandatory Level",
714                 .type = SID_NAME_LABEL,
715                 .sid = _SID1(16, 12288), /* S-1-16-12288 */
716         },
717         {
718                 .name = "System Mandatory Level",
719                 .type = SID_NAME_LABEL,
720                 .sid = _SID1(16, 16384), /* S-1-16-16384 */
721         },
722         {
723                 .name = "Protected Process Mandatory Level",
724                 .type = SID_NAME_LABEL,
725                 .sid = _SID1(16, 20480), /* S-1-16-20480 */
726         },
727 };
728
729 static const struct predefined_domain_mapping predefined_domains[] = {
730         {
731                 .domain = "",
732                 .sid = _SID0(0), /* S-1-0 */
733                 .num_names = ARRAY_SIZE(predefined_names_S_1_0),
734                 .names = predefined_names_S_1_0,
735         },
736         {
737                 .domain = "",
738                 .sid = _SID0(1), /* S-1-1 */
739                 .num_names = ARRAY_SIZE(predefined_names_S_1_1),
740                 .names = predefined_names_S_1_1,
741         },
742         {
743                 .domain = "",
744                 .sid = _SID0(2), /* S-1-2 */
745                 .num_names = ARRAY_SIZE(predefined_names_S_1_2),
746                 .names = predefined_names_S_1_2,
747         },
748         {
749                 .domain = "",
750                 .sid = _SID0(3), /* S-1-3 */
751                 .num_names = ARRAY_SIZE(predefined_names_S_1_3),
752                 .names = predefined_names_S_1_3,
753         },
754         {
755                 .domain = "",
756                 .sid = _SID0(3), /* S-1-3 */
757                 .num_names = ARRAY_SIZE(predefined_names_S_1_3),
758                 .names = predefined_names_S_1_3,
759         },
760         /*
761          * S-1-5 is split here
762          *
763          * 'NT Pseudo Domain' has precedence before 'NT AUTHORITY'.
764          *
765          * In a LookupSids with multiple sids e.g. S-1-5 and S-1-5-7
766          * the domain section (struct lsa_DomainInfo) gets
767          * 'NT Pseudo Domain' with S-1-5. If asked in reversed order
768          * S-1-5-7 and then S-1-5, you get struct lsa_DomainInfo
769          * with 'NT AUTHORITY' and S-1-5.
770          */
771         {
772                 .domain = "NT Pseudo Domain",
773                 .sid = _SID0(5), /* S-1-5 */
774                 .num_names = ARRAY_SIZE(predefined_names_S_1_5p),
775                 .names = predefined_names_S_1_5p,
776         },
777         {
778                 .domain = "NT AUTHORITY",
779                 .sid = _SID0(5), /* S-1-5 */
780                 .num_names = ARRAY_SIZE(predefined_names_S_1_5a),
781                 .names = predefined_names_S_1_5a,
782         },
783         {
784                 .domain = "BUILTIN",
785                 .sid = _SID1(5, 32), /* S-1-5-32 */
786                 .num_names = ARRAY_SIZE(predefined_names_S_1_5_32),
787                 .names = predefined_names_S_1_5_32,
788         },
789         /*
790          * 'NT AUTHORITY' again with S-1-5-64 this time
791          */
792         {
793                 .domain = "NT AUTHORITY",
794                 .sid = _SID1(5, 64), /* S-1-5-64 */
795                 .num_names = ARRAY_SIZE(predefined_names_S_1_5_64),
796                 .names = predefined_names_S_1_5_64,
797         },
798         {
799                 .domain = "Internet$",
800                 .sid = _SID0(7), /* S-1-7 */
801                 .num_names = ARRAY_SIZE(predefined_names_S_1_7),
802                 .names = predefined_names_S_1_7,
803         },
804         {
805                 .domain = "Mandatory Label",
806                 .sid = _SID0(16), /* S-1-16 */
807                 .num_names = ARRAY_SIZE(predefined_names_S_1_16),
808                 .names = predefined_names_S_1_16,
809         },
810 };
811
812 NTSTATUS dom_sid_lookup_predefined_name(const char *name,
813                                         const struct dom_sid **sid,
814                                         enum lsa_SidType *type,
815                                         const struct dom_sid **authority_sid,
816                                         const char **authority_name)
817 {
818         size_t di;
819         const char *domain = "";
820         size_t domain_len = 0;
821         const char *p;
822         bool match;
823
824         *sid = NULL;
825         *type = SID_NAME_UNKNOWN;
826         *authority_sid = NULL;
827         *authority_name = NULL;
828
829         if (name == NULL) {
830                 name = "";
831         }
832
833         p = strchr(name, '\\');
834         if (p != NULL) {
835                 domain = name;
836                 domain_len = PTR_DIFF(p, domain);
837                 name = p + 1;
838         }
839
840         match = strequal(name, "");
841         if (match) {
842                 /*
843                  * Strange, but that's what W2012R2 does.
844                  */
845                 name = "BUILTIN";
846         }
847
848         for (di = 0; di < ARRAY_SIZE(predefined_domains); di++) {
849                 const struct predefined_domain_mapping *d =
850                         &predefined_domains[di];
851                 size_t ni;
852
853                 if (domain_len != 0) {
854                         int cmp;
855
856                         cmp = strncasecmp(d->domain, domain, domain_len);
857                         if (cmp != 0) {
858                                 continue;
859                         }
860                 }
861
862                 for (ni = 0; ni < d->num_names; ni++) {
863                         const struct predefined_name_mapping *n =
864                                 &d->names[ni];
865
866                         match = strequal(n->name, name);
867                         if (!match) {
868                                 continue;
869                         }
870
871                         *sid = &n->sid;
872                         *type = n->type;
873                         *authority_sid = &d->sid;
874                         *authority_name = d->domain;
875                         return NT_STATUS_OK;
876                 }
877         }
878
879         return NT_STATUS_NONE_MAPPED;
880 }
881
882 bool dom_sid_lookup_is_predefined_domain(const char *domain)
883 {
884         size_t di;
885         bool match;
886
887         if (domain == NULL) {
888                 domain = "";
889         }
890
891         match = strequal(domain, "");
892         if (match) {
893                 /*
894                  * Strange, but that's what W2012R2 does.
895                  */
896                 domain = "BUILTIN";
897         }
898
899         for (di = 0; di < ARRAY_SIZE(predefined_domains); di++) {
900                 const struct predefined_domain_mapping *d =
901                         &predefined_domains[di];
902                 int cmp;
903
904                 cmp = strcasecmp(d->domain, domain);
905                 if (cmp != 0) {
906                         continue;
907                 }
908
909                 return true;
910         }
911
912         return false;
913 }
914
915 NTSTATUS dom_sid_lookup_predefined_sid(const struct dom_sid *sid,
916                                        const char **name,
917                                        enum lsa_SidType *type,
918                                        const struct dom_sid **authority_sid,
919                                        const char **authority_name)
920 {
921         size_t di;
922         bool match_domain = false;
923
924         *name = NULL;
925         *type = SID_NAME_UNKNOWN;
926         *authority_sid = NULL;
927         *authority_name = NULL;
928
929         if (sid == NULL) {
930                 return NT_STATUS_INVALID_SID;
931         }
932
933         for (di = 0; di < ARRAY_SIZE(predefined_domains); di++) {
934                 const struct predefined_domain_mapping *d =
935                         &predefined_domains[di];
936                 size_t ni;
937                 int cmp;
938
939                 cmp = dom_sid_compare_auth(&d->sid, sid);
940                 if (cmp != 0) {
941                         continue;
942                 }
943
944                 match_domain = true;
945
946                 for (ni = 0; ni < d->num_names; ni++) {
947                         const struct predefined_name_mapping *n =
948                                 &d->names[ni];
949
950                         cmp = dom_sid_compare(&n->sid, sid);
951                         if (cmp != 0) {
952                                 continue;
953                         }
954
955                         *name = n->name;
956                         *type = n->type;
957                         *authority_sid = &d->sid;
958                         *authority_name = d->domain;
959                         return NT_STATUS_OK;
960                 }
961         }
962
963         if (!match_domain) {
964                 return NT_STATUS_INVALID_SID;
965         }
966
967         return NT_STATUS_NONE_MAPPED;
968 }