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 struct sid_parse_ret sid_parse(
 304         const uint8_t *inbuf, size_t len, struct dom_sid *sid)
 305 {
 306         DATA_BLOB in = data_blob_const(inbuf, len);
 307         enum ndr_err_code ndr_err;
 308
 309         ndr_err = ndr_pull_struct_blob_all(
 310                 &in, NULL, sid, (ndr_pull_flags_fn_t)ndr_pull_dom_sid);
 311         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 312                 return (struct sid_parse_ret) { .len = -1 };
 313         }
 314         return (struct sid_parse_ret) { .len = ndr_size_dom_sid(sid, 0) };
 315 }
 316
 317 /*****************************************************************
 318  See if 2 SIDs are in the same domain
 319  this just compares the leading sub-auths
 320 *****************************************************************/
 321
 322 int sid_compare_domain(const struct dom_sid *sid1, const struct dom_sid *sid2)
 323 {
 324         int n, i;
 325
 326         n = MIN(sid1->num_auths, sid2->num_auths);
 327
 328         for (i = n-1; i >= 0; --i)
 329                 if (sid1->sub_auths[i] != sid2->sub_auths[i])
 330                         return sid1->sub_auths[i] - sid2->sub_auths[i];
 331
 332         return dom_sid_compare_auth(sid1, sid2);
 333 }
 334
 335 /********************************************************************
 336  Add SID to an array SIDs
 337 ********************************************************************/
 338
 339 NTSTATUS add_sid_to_array(TALLOC_CTX *mem_ctx, const struct dom_sid *sid,
 340                           struct dom_sid **sids, uint32_t *num)
 341 {
 342         struct dom_sid *tmp;
 343
 344         if ((*num) == UINT32_MAX) {
 345                 return NT_STATUS_INTEGER_OVERFLOW;
 346         }
 347
 348         tmp = talloc_realloc(mem_ctx, *sids, struct dom_sid, (*num)+1);
 349         if (tmp == NULL) {
 350                 *num = 0;
 351                 return NT_STATUS_NO_MEMORY;
 352         }
 353         *sids = tmp;
 354
 355         sid_copy(&((*sids)[*num]), sid);
 356         *num += 1;
 357
 358         return NT_STATUS_OK;
 359 }
 360
 361
 362 /********************************************************************
 363  Add SID to an array SIDs ensuring that it is not already there
 364 ********************************************************************/
 365
 366 NTSTATUS add_sid_to_array_unique(TALLOC_CTX *mem_ctx, const struct dom_sid *sid,
 367                                  struct dom_sid **sids, uint32_t *num_sids)
 368 {
 369         uint32_t i;
 370
 371         for (i=0; i<(*num_sids); i++) {
 372                 if (dom_sid_equal(sid, &(*sids)[i])) {
 373                         return NT_STATUS_OK;
 374                 }
 375         }
 376
 377         return add_sid_to_array(mem_ctx, sid, sids, num_sids);
 378 }
 379
 380 /********************************************************************
 381  Remove SID from an array
 382 ********************************************************************/
 383
 384 void del_sid_from_array(const struct dom_sid *sid, struct dom_sid **sids,
 385                         uint32_t *num)
 386 {
 387         struct dom_sid *sid_list = *sids;
 388         uint32_t i;
 389
 390         for ( i=0; i<*num; i++ ) {
 391
 392                 /* if we find the SID, then decrement the count
 393                    and break out of the loop */
 394
 395                 if (dom_sid_equal(sid, &sid_list[i])) {
 396                         *num -= 1;
 397                         break;
 398                 }
 399         }
 400
 401         /* This loop will copy the remainder of the array
 402            if i < num of sids in the array */
 403
 404         for ( ; i<*num; i++ ) {
 405                 sid_copy( &sid_list[i], &sid_list[i+1] );
 406         }
 407
 408         return;
 409 }
 410
 411 bool add_rid_to_array_unique(TALLOC_CTX *mem_ctx,
 412                              uint32_t rid, uint32_t **pp_rids, size_t *p_num)
 413 {
 414         size_t i;
 415
 416         for (i=0; i<*p_num; i++) {
 417                 if ((*pp_rids)[i] == rid)
 418                         return true;
 419         }
 420
 421         *pp_rids = talloc_realloc(mem_ctx, *pp_rids, uint32_t, *p_num+1);
 422
 423         if (*pp_rids == NULL) {
 424                 *p_num = 0;
 425                 return false;
 426         }
 427
 428         (*pp_rids)[*p_num] = rid;
 429         *p_num += 1;
 430         return true;
 431 }
 432
 433 bool is_null_sid(const struct dom_sid *sid)
 434 {
 435         const struct dom_sid null_sid = {0};
 436         return dom_sid_equal(sid, &null_sid);
 437 }
 438
 439 /*
 440  * See [MS-LSAT] 3.1.1.1.1 Predefined Translation Database and Corresponding View
 441  */
 442 struct predefined_name_mapping {
 443         const char *name;
 444         enum lsa_SidType type;
 445         struct dom_sid sid;
 446 };
 447
 448 struct predefined_domain_mapping {
 449         const char *domain;
 450         struct dom_sid sid;
 451         size_t num_names;
 452         const struct predefined_name_mapping *names;
 453 };
 454
 455 /* S-1-${AUTHORITY} */
 456 #define _SID0(authority) \
 457         { 1, 0, {0,0,0,0,0,authority}, {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}}
 458 /* S-1-${AUTHORITY}-${SUB1} */
 459 #define _SID1(authority,sub1) \
 460         { 1, 1, {0,0,0,0,0,authority}, {sub1,0,0,0,0,0,0,0,0,0,0,0,0,0,0}}
 461 /* S-1-${AUTHORITY}-${SUB1}-${SUB2} */
 462 #define _SID2(authority,sub1,sub2) \
 463         { 1, 2, {0,0,0,0,0,authority}, {sub1,sub2,0,0,0,0,0,0,0,0,0,0,0,0,0}}
 464
 465 /*
 466  * S-1-0
 467  */
 468 static const struct predefined_name_mapping predefined_names_S_1_0[] = {
 469         {
 470                 .name = "NULL SID",
 471                 .type = SID_NAME_WKN_GRP,
 472                 .sid = _SID1(0, 0), /* S-1-0-0 */
 473         },
 474 };
 475
 476 /*
 477  * S-1-1
 478  */
 479 static const struct predefined_name_mapping predefined_names_S_1_1[] = {
 480         {
 481                 .name = "Everyone",
 482                 .type = SID_NAME_WKN_GRP,
 483                 .sid = _SID1(1, 0), /* S-1-1-0 */
 484         },
 485 };
 486
 487 /*
 488  * S-1-2
 489  */
 490 static const struct predefined_name_mapping predefined_names_S_1_2[] = {
 491         {
 492                 .name = "LOCAL",
 493                 .type = SID_NAME_WKN_GRP,
 494                 .sid = _SID1(2, 0), /* S-1-2-0 */
 495         },
 496 };
 497
 498 /*
 499  * S-1-3
 500  */
 501 static const struct predefined_name_mapping predefined_names_S_1_3[] = {
 502         {
 503                 .name = "CREATOR OWNER",
 504                 .type = SID_NAME_WKN_GRP,
 505                 .sid = _SID1(3, 0), /* S-1-3-0 */
 506         },
 507         {
 508                 .name = "CREATOR GROUP",
 509                 .type = SID_NAME_WKN_GRP,
 510                 .sid = _SID1(3, 1), /* S-1-3-1 */
 511         },
 512         {
 513                 .name = "CREATOR OWNER SERVER",
 514                 .type = SID_NAME_WKN_GRP,
 515                 .sid = _SID1(3, 0), /* S-1-3-2 */
 516         },
 517         {
 518                 .name = "CREATOR GROUP SERVER",
 519                 .type = SID_NAME_WKN_GRP,
 520                 .sid = _SID1(3, 1), /* S-1-3-3 */
 521         },
 522         {
 523                 .name = "OWNER RIGHTS",
 524                 .type = SID_NAME_WKN_GRP,
 525                 .sid = _SID1(3, 4), /* S-1-3-4 */
 526         },
 527 };
 528
 529 /*
 530  * S-1-5 only 'NT Pseudo Domain'
 531  */
 532 static const struct predefined_name_mapping predefined_names_S_1_5p[] = {
 533         {
 534                 .name = "NT Pseudo Domain",
 535                 .type = SID_NAME_DOMAIN,
 536                 .sid = _SID0(5), /* S-1-5 */
 537         },
 538 };
 539
 540 /*
 541  * S-1-5 'NT AUTHORITY'
 542  */
 543 static const struct predefined_name_mapping predefined_names_S_1_5a[] = {
 544         {
 545                 .name = "DIALUP",
 546                 .type = SID_NAME_WKN_GRP,
 547                 .sid = _SID1(5, 1), /* S-1-5-1 */
 548         },
 549         {
 550                 .name = "NETWORK",
 551                 .type = SID_NAME_WKN_GRP,
 552                 .sid = _SID1(5, 2), /* S-1-5-2 */
 553         },
 554         {
 555                 .name = "BATCH",
 556                 .type = SID_NAME_WKN_GRP,
 557                 .sid = _SID1(5, 3), /* S-1-5-3 */
 558         },
 559         {
 560                 .name = "INTERACTIVE",
 561                 .type = SID_NAME_WKN_GRP,
 562                 .sid = _SID1(5, 4), /* S-1-5-4 */
 563         },
 564         {
 565                 .name = "SERVICE",
 566                 .type = SID_NAME_WKN_GRP,
 567                 .sid = _SID1(5, 6), /* S-1-5-6 */
 568         },
 569         {
 570                 .name = "ANONYMOUS LOGON",
 571                 .type = SID_NAME_WKN_GRP,
 572                 .sid = _SID1(5, 7), /* S-1-5-7 */
 573         },
 574         {
 575                 .name = "PROXY",
 576                 .type = SID_NAME_WKN_GRP,
 577                 .sid = _SID1(5, 8), /* S-1-5-8 */
 578         },
 579         {
 580                 .name = "ENTERPRISE DOMAIN CONTROLLERS",
 581                 .type = SID_NAME_WKN_GRP,
 582                 .sid = _SID1(5, 9), /* S-1-5-9 */
 583         },
 584         {
 585                 .name = "SELF",
 586                 .type = SID_NAME_WKN_GRP,
 587                 .sid = _SID1(5, 10), /* S-1-5-10 */
 588         },
 589         {
 590                 .name = "Authenticated Users",
 591                 .type = SID_NAME_WKN_GRP,
 592                 .sid = _SID1(5, 11), /* S-1-5-11 */
 593         },
 594         {
 595                 .name = "RESTRICTED",
 596                 .type = SID_NAME_WKN_GRP,
 597                 .sid = _SID1(5, 12), /* S-1-5-12 */
 598         },
 599         {
 600                 .name = "TERMINAL SERVER USER",
 601                 .type = SID_NAME_WKN_GRP,
 602                 .sid = _SID1(5, 13), /* S-1-5-13 */
 603         },
 604         {
 605                 .name = "REMOTE INTERACTIVE LOGON",
 606                 .type = SID_NAME_WKN_GRP,
 607                 .sid = _SID1(5, 14), /* S-1-5-14 */
 608         },
 609         {
 610                 .name = "This Organization",
 611                 .type = SID_NAME_WKN_GRP,
 612                 .sid = _SID1(5, 15), /* S-1-5-15 */
 613         },
 614         {
 615                 .name = "IUSR",
 616                 .type = SID_NAME_WKN_GRP,
 617                 .sid = _SID1(5, 17), /* S-1-5-17 */
 618         },
 619         {
 620                 .name = "SYSTEM",
 621                 .type = SID_NAME_WKN_GRP,
 622                 .sid = _SID1(5, 18), /* S-1-5-18 */
 623         },
 624         {
 625                 .name = "LOCAL SERVICE",
 626                 .type = SID_NAME_WKN_GRP,
 627                 .sid = _SID1(5, 19), /* S-1-5-19 */
 628         },
 629         {
 630                 .name = "NETWORK SERVICE",
 631                 .type = SID_NAME_WKN_GRP,
 632                 .sid = _SID1(5, 20), /* S-1-5-20 */
 633         },
 634         {
 635                 .name = "WRITE RESTRICTED",
 636                 .type = SID_NAME_WKN_GRP,
 637                 .sid = _SID1(5, 33), /* S-1-5-33 */
 638         },
 639         {
 640                 .name = "Other Organization",
 641                 .type = SID_NAME_WKN_GRP,
 642                 .sid = _SID1(5, 1000), /* S-1-5-1000 */
 643         },
 644 };
 645
 646 /*
 647  * S-1-5-32
 648  */
 649 static const struct predefined_name_mapping predefined_names_S_1_5_32[] = {
 650         {
 651                 .name = "BUILTIN",
 652                 .type = SID_NAME_DOMAIN,
 653                 .sid = _SID1(5, 32), /* S-1-5-32 */
 654         },
 655 };
 656
 657 /*
 658  * S-1-5-64
 659  */
 660 static const struct predefined_name_mapping predefined_names_S_1_5_64[] = {
 661         {
 662                 .name = "NTLM Authentication",
 663                 .type = SID_NAME_WKN_GRP,
 664                 .sid = _SID2(5, 64, 10), /* S-1-5-64-10 */
 665         },
 666         {
 667                 .name = "SChannel Authentication",
 668                 .type = SID_NAME_WKN_GRP,
 669                 .sid = _SID2(5, 64, 14), /* S-1-5-64-14 */
 670         },
 671         {
 672                 .name = "Digest Authentication",
 673                 .type = SID_NAME_WKN_GRP,
 674                 .sid = _SID2(5, 64, 21), /* S-1-5-64-21 */
 675         },
 676 };
 677
 678 /*
 679  * S-1-7
 680  */
 681 static const struct predefined_name_mapping predefined_names_S_1_7[] = {
 682         {
 683                 .name = "Internet$",
 684                 .type = SID_NAME_DOMAIN,
 685                 .sid = _SID0(7), /* S-1-7 */
 686         },
 687 };
 688
 689 /*
 690  * S-1-16
 691  */
 692 static const struct predefined_name_mapping predefined_names_S_1_16[] = {
 693         {
 694                 .name = "Mandatory Label",
 695                 .type = SID_NAME_DOMAIN,
 696                 .sid = _SID0(16), /* S-1-16 */
 697         },
 698         {
 699                 .name = "Untrusted Mandatory Level",
 700                 .type = SID_NAME_LABEL,
 701                 .sid = _SID1(16, 0), /* S-1-16-0 */
 702         },
 703         {
 704                 .name = "Low Mandatory Level",
 705                 .type = SID_NAME_LABEL,
 706                 .sid = _SID1(16, 4096), /* S-1-16-4096 */
 707         },
 708         {
 709                 .name = "Medium Mandatory Level",
 710                 .type = SID_NAME_LABEL,
 711                 .sid = _SID1(16, 8192), /* S-1-16-8192 */
 712         },
 713         {
 714                 .name = "High Mandatory Level",
 715                 .type = SID_NAME_LABEL,
 716                 .sid = _SID1(16, 12288), /* S-1-16-12288 */
 717         },
 718         {
 719                 .name = "System Mandatory Level",
 720                 .type = SID_NAME_LABEL,
 721                 .sid = _SID1(16, 16384), /* S-1-16-16384 */
 722         },
 723         {
 724                 .name = "Protected Process Mandatory Level",
 725                 .type = SID_NAME_LABEL,
 726                 .sid = _SID1(16, 20480), /* S-1-16-20480 */
 727         },
 728 };
 729
 730 static const struct predefined_domain_mapping predefined_domains[] = {
 731         {
 732                 .domain = "",
 733                 .sid = _SID0(0), /* S-1-0 */
 734                 .num_names = ARRAY_SIZE(predefined_names_S_1_0),
 735                 .names = predefined_names_S_1_0,
 736         },
 737         {
 738                 .domain = "",
 739                 .sid = _SID0(1), /* S-1-1 */
 740                 .num_names = ARRAY_SIZE(predefined_names_S_1_1),
 741                 .names = predefined_names_S_1_1,
 742         },
 743         {
 744                 .domain = "",
 745                 .sid = _SID0(2), /* S-1-2 */
 746                 .num_names = ARRAY_SIZE(predefined_names_S_1_2),
 747                 .names = predefined_names_S_1_2,
 748         },
 749         {
 750                 .domain = "",
 751                 .sid = _SID0(3), /* S-1-3 */
 752                 .num_names = ARRAY_SIZE(predefined_names_S_1_3),
 753                 .names = predefined_names_S_1_3,
 754         },
 755         {
 756                 .domain = "",
 757                 .sid = _SID0(3), /* S-1-3 */
 758                 .num_names = ARRAY_SIZE(predefined_names_S_1_3),
 759                 .names = predefined_names_S_1_3,
 760         },
 761         /*
 762          * S-1-5 is split here
 763          *
 764          * 'NT Pseudo Domain' has precedence before 'NT AUTHORITY'.
 765          *
 766          * In a LookupSids with multiple sids e.g. S-1-5 and S-1-5-7
 767          * the domain section (struct lsa_DomainInfo) gets
 768          * 'NT Pseudo Domain' with S-1-5. If asked in reversed order
 769          * S-1-5-7 and then S-1-5, you get struct lsa_DomainInfo
 770          * with 'NT AUTHORITY' and S-1-5.
 771          */
 772         {
 773                 .domain = "NT Pseudo Domain",
 774                 .sid = _SID0(5), /* S-1-5 */
 775                 .num_names = ARRAY_SIZE(predefined_names_S_1_5p),
 776                 .names = predefined_names_S_1_5p,
 777         },
 778         {
 779                 .domain = "NT AUTHORITY",
 780                 .sid = _SID0(5), /* S-1-5 */
 781                 .num_names = ARRAY_SIZE(predefined_names_S_1_5a),
 782                 .names = predefined_names_S_1_5a,
 783         },
 784         {
 785                 .domain = "BUILTIN",
 786                 .sid = _SID1(5, 32), /* S-1-5-32 */
 787                 .num_names = ARRAY_SIZE(predefined_names_S_1_5_32),
 788                 .names = predefined_names_S_1_5_32,
 789         },
 790         /*
 791          * 'NT AUTHORITY' again with S-1-5-64 this time
 792          */
 793         {
 794                 .domain = "NT AUTHORITY",
 795                 .sid = _SID1(5, 64), /* S-1-5-64 */
 796                 .num_names = ARRAY_SIZE(predefined_names_S_1_5_64),
 797                 .names = predefined_names_S_1_5_64,
 798         },
 799         {
 800                 .domain = "Internet$",
 801                 .sid = _SID0(7), /* S-1-7 */
 802                 .num_names = ARRAY_SIZE(predefined_names_S_1_7),
 803                 .names = predefined_names_S_1_7,
 804         },
 805         {
 806                 .domain = "Mandatory Label",
 807                 .sid = _SID0(16), /* S-1-16 */
 808                 .num_names = ARRAY_SIZE(predefined_names_S_1_16),
 809                 .names = predefined_names_S_1_16,
 810         },
 811 };
 812
 813 NTSTATUS dom_sid_lookup_predefined_name(const char *name,
 814                                         const struct dom_sid **sid,
 815                                         enum lsa_SidType *type,
 816                                         const struct dom_sid **authority_sid,
 817                                         const char **authority_name)
 818 {
 819         size_t di;
 820         const char *domain = "";
 821         size_t domain_len = 0;
 822         const char *p;
 823         bool match;
 824
 825         *sid = NULL;
 826         *type = SID_NAME_UNKNOWN;
 827         *authority_sid = NULL;
 828         *authority_name = NULL;
 829
 830         if (name == NULL) {
 831                 name = "";
 832         }
 833
 834         p = strchr(name, '\\');
 835         if (p != NULL) {
 836                 domain = name;
 837                 domain_len = PTR_DIFF(p, domain);
 838                 name = p + 1;
 839         }
 840
 841         match = strequal(name, "");
 842         if (match) {
 843                 /*
 844                  * Strange, but that's what W2012R2 does.
 845                  */
 846                 name = "BUILTIN";
 847         }
 848
 849         for (di = 0; di < ARRAY_SIZE(predefined_domains); di++) {
 850                 const struct predefined_domain_mapping *d =
 851                         &predefined_domains[di];
 852                 size_t ni;
 853
 854                 if (domain_len != 0) {
 855                         int cmp;
 856
 857                         cmp = strncasecmp(d->domain, domain, domain_len);
 858                         if (cmp != 0) {
 859                                 continue;
 860                         }
 861                 }
 862
 863                 for (ni = 0; ni < d->num_names; ni++) {
 864                         const struct predefined_name_mapping *n =
 865                                 &d->names[ni];
 866
 867                         match = strequal(n->name, name);
 868                         if (!match) {
 869                                 continue;
 870                         }
 871
 872                         *sid = &n->sid;
 873                         *type = n->type;
 874                         *authority_sid = &d->sid;
 875                         *authority_name = d->domain;
 876                         return NT_STATUS_OK;
 877                 }
 878         }
 879
 880         return NT_STATUS_NONE_MAPPED;
 881 }
 882
 883 bool dom_sid_lookup_is_predefined_domain(const char *domain)
 884 {
 885         size_t di;
 886         bool match;
 887
 888         if (domain == NULL) {
 889                 domain = "";
 890         }
 891
 892         match = strequal(domain, "");
 893         if (match) {
 894                 /*
 895                  * Strange, but that's what W2012R2 does.
 896                  */
 897                 domain = "BUILTIN";
 898         }
 899
 900         for (di = 0; di < ARRAY_SIZE(predefined_domains); di++) {
 901                 const struct predefined_domain_mapping *d =
 902                         &predefined_domains[di];
 903                 int cmp;
 904
 905                 cmp = strcasecmp(d->domain, domain);
 906                 if (cmp != 0) {
 907                         continue;
 908                 }
 909
 910                 return true;
 911         }
 912
 913         return false;
 914 }
 915
 916 NTSTATUS dom_sid_lookup_predefined_sid(const struct dom_sid *sid,
 917                                        const char **name,
 918                                        enum lsa_SidType *type,
 919                                        const struct dom_sid **authority_sid,
 920                                        const char **authority_name)
 921 {
 922         size_t di;
 923         bool match_domain = false;
 924
 925         *name = NULL;
 926         *type = SID_NAME_UNKNOWN;
 927         *authority_sid = NULL;
 928         *authority_name = NULL;
 929
 930         if (sid == NULL) {
 931                 return NT_STATUS_INVALID_SID;
 932         }
 933
 934         for (di = 0; di < ARRAY_SIZE(predefined_domains); di++) {
 935                 const struct predefined_domain_mapping *d =
 936                         &predefined_domains[di];
 937                 size_t ni;
 938                 int cmp;
 939
 940                 cmp = dom_sid_compare_auth(&d->sid, sid);
 941                 if (cmp != 0) {
 942                         continue;
 943                 }
 944
 945                 match_domain = true;
 946
 947                 for (ni = 0; ni < d->num_names; ni++) {
 948                         const struct predefined_name_mapping *n =
 949                                 &d->names[ni];
 950
 951                         cmp = dom_sid_compare(&n->sid, sid);
 952                         if (cmp != 0) {
 953                                 continue;
 954                         }
 955
 956                         *name = n->name;
 957                         *type = n->type;
 958                         *authority_sid = &d->sid;
 959                         *authority_name = d->domain;
 960                         return NT_STATUS_OK;
 961                 }
 962         }
 963
 964         if (!match_domain) {
 965                 return NT_STATUS_INVALID_SID;
 966         }
 967
 968         return NT_STATUS_NONE_MAPPED;
 969 }