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 #undef strcasecmp
  32 #undef strncasecmp
  33
  34 /*
  35  * Some useful sids, more well known sids can be found at
  36  * http://support.microsoft.com/kb/243330/EN-US/
  37  */
  38
  39
  40 /* S-1-1 */
  41 const struct dom_sid global_sid_World_Domain =               /* Everyone domain */
  42 { 1, 0, {0,0,0,0,0,1}, {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
  43 /* S-1-1-0 */
  44 const struct dom_sid global_sid_World =                      /* Everyone */
  45 { 1, 1, {0,0,0,0,0,1}, {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
  46 /* S-1-2 */
  47 const struct dom_sid global_sid_Local_Authority =            /* Local Authority */
  48 { 1, 0, {0,0,0,0,0,2}, {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
  49 /* S-1-3 */
  50 const struct dom_sid global_sid_Creator_Owner_Domain =       /* Creator Owner domain */
  51 { 1, 0, {0,0,0,0,0,3}, {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
  52 /* S-1-5 */
  53 const struct dom_sid global_sid_NT_Authority =                  /* NT Authority */
  54 { 1, 0, {0,0,0,0,0,5}, {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
  55 /* S-1-5-18 */
  56 const struct dom_sid global_sid_System =                        /* System */
  57 { 1, 1, {0,0,0,0,0,5}, {18,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
  58 /* S-1-0-0 */
  59 const struct dom_sid global_sid_NULL =                          /* NULL sid */
  60 { 1, 1, {0,0,0,0,0,0}, {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
  61 /* S-1-5-11 */
  62 const struct dom_sid global_sid_Authenticated_Users =   /* All authenticated rids */
  63 { 1, 1, {0,0,0,0,0,5}, {11,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
  64 #if 0
  65 /* for documentation S-1-5-12 */
  66 const struct dom_sid global_sid_Restriced =                     /* Restriced Code */
  67 { 1, 1, {0,0,0,0,0,5}, {12,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
  68 #endif
  69
  70 /* S-1-18 */
  71 const struct dom_sid global_sid_Asserted_Identity =       /* Asserted Identity */
  72 { 1, 0, {0,0,0,0,0,18}, {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
  73 /* S-1-18-1 */
  74 const struct dom_sid global_sid_Asserted_Identity_Service =     /* Asserted Identity Service */
  75 { 1, 1, {0,0,0,0,0,18}, {1,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
  76 /* S-1-18-2 */
  77 const struct dom_sid global_sid_Asserted_Identity_Authentication_Authority =    /* Asserted Identity Authentication Authority */
  78 { 1, 1, {0,0,0,0,0,18}, {2,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
  79
  80 /* S-1-5-2 */
  81 const struct dom_sid global_sid_Network =                       /* Network rids */
  82 { 1, 1, {0,0,0,0,0,5}, {2,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
  83
  84 /* S-1-3 */
  85 const struct dom_sid global_sid_Creator_Owner =         /* Creator Owner */
  86 { 1, 1, {0,0,0,0,0,3}, {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
  87 /* S-1-3-1 */
  88 const struct dom_sid global_sid_Creator_Group =         /* Creator Group */
  89 { 1, 1, {0,0,0,0,0,3}, {1,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
  90 /* S-1-3-4 */
  91 const struct dom_sid global_sid_Owner_Rights =          /* Owner Rights */
  92 { 1, 1, {0,0,0,0,0,3}, {4,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
  93 /* S-1-5-7 */
  94 const struct dom_sid global_sid_Anonymous =                     /* Anonymous login */
  95 { 1, 1, {0,0,0,0,0,5}, {7,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
  96 /* S-1-5-9 */
  97 const struct dom_sid global_sid_Enterprise_DCs =                /* Enterprise DCs */
  98 { 1, 1, {0,0,0,0,0,5}, {9,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
  99 /* S-1-5-32 */
 100 const struct dom_sid global_sid_Builtin =                       /* Local well-known domain */
 101 { 1, 1, {0,0,0,0,0,5}, {32,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
 102 /* S-1-5-32-544 */
 103 const struct dom_sid global_sid_Builtin_Administrators =        /* Builtin administrators */
 104 { 1, 2, {0,0,0,0,0,5}, {32,544,0,0,0,0,0,0,0,0,0,0,0,0,0}};
 105 /* S-1-5-32-545 */
 106 const struct dom_sid global_sid_Builtin_Users =         /* Builtin users */
 107 { 1, 2, {0,0,0,0,0,5}, {32,545,0,0,0,0,0,0,0,0,0,0,0,0,0}};
 108 /* S-1-5-32-546 */
 109 const struct dom_sid global_sid_Builtin_Guests =                /* Builtin guest users */
 110 { 1, 2, {0,0,0,0,0,5}, {32,546,0,0,0,0,0,0,0,0,0,0,0,0,0}};
 111 /* S-1-5-32-547 */
 112 const struct dom_sid global_sid_Builtin_Power_Users =   /* Builtin power users */
 113 { 1, 2, {0,0,0,0,0,5}, {32,547,0,0,0,0,0,0,0,0,0,0,0,0,0}};
 114 /* S-1-5-32-548 */
 115 const struct dom_sid global_sid_Builtin_Account_Operators =     /* Builtin account operators */
 116 { 1, 2, {0,0,0,0,0,5}, {32,548,0,0,0,0,0,0,0,0,0,0,0,0,0}};
 117 /* S-1-5-32-549 */
 118 const struct dom_sid global_sid_Builtin_Server_Operators =      /* Builtin server operators */
 119 { 1, 2, {0,0,0,0,0,5}, {32,549,0,0,0,0,0,0,0,0,0,0,0,0,0}};
 120 /* S-1-5-32-550 */
 121 const struct dom_sid global_sid_Builtin_Print_Operators =       /* Builtin print operators */
 122 { 1, 2, {0,0,0,0,0,5}, {32,550,0,0,0,0,0,0,0,0,0,0,0,0,0}};
 123 /* S-1-5-32-551 */
 124 const struct dom_sid global_sid_Builtin_Backup_Operators =      /* Builtin backup operators */
 125 { 1, 2, {0,0,0,0,0,5}, {32,551,0,0,0,0,0,0,0,0,0,0,0,0,0}};
 126 /* S-1-5-32-552 */
 127 const struct dom_sid global_sid_Builtin_Replicator =            /* Builtin replicator */
 128 { 1, 2, {0,0,0,0,0,5}, {32,552,0,0,0,0,0,0,0,0,0,0,0,0,0}};
 129 /* S-1-5-32-554 */
 130 const struct dom_sid global_sid_Builtin_PreWin2kAccess =        /* Builtin pre win2k access */
 131 { 1, 2, {0,0,0,0,0,5}, {32,554,0,0,0,0,0,0,0,0,0,0,0,0,0}};
 132
 133 /* S-1-22-1 */
 134 const struct dom_sid global_sid_Unix_Users =                    /* Unmapped Unix users */
 135 { 1, 1, {0,0,0,0,0,22}, {1,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
 136 /* S-1-22-2 */
 137 const struct dom_sid global_sid_Unix_Groups =                   /* Unmapped Unix groups */
 138 { 1, 1, {0,0,0,0,0,22}, {2,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
 139
 140 /*
 141  * http://technet.microsoft.com/en-us/library/hh509017(v=ws.10).aspx
 142  */
 143 /* S-1-5-88 */
 144 const struct dom_sid global_sid_Unix_NFS =             /* MS NFS and Apple style */
 145 { 1, 1, {0,0,0,0,0,5}, {88,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
 146 /* S-1-5-88-1 */
 147 const struct dom_sid global_sid_Unix_NFS_Users =                /* Unix uid, MS NFS and Apple style */
 148 { 1, 2, {0,0,0,0,0,5}, {88,1,0,0,0,0,0,0,0,0,0,0,0,0,0}};
 149 /* S-1-5-88-2 */
 150 const struct dom_sid global_sid_Unix_NFS_Groups =               /* Unix gid, MS NFS and Apple style */
 151 { 1, 2, {0,0,0,0,0,5}, {88,2,0,0,0,0,0,0,0,0,0,0,0,0,0}};
 152 /* S-1-5-88-3 */
 153 const struct dom_sid global_sid_Unix_NFS_Mode =                 /* Unix mode */
 154 { 1, 2, {0,0,0,0,0,5}, {88,3,0,0,0,0,0,0,0,0,0,0,0,0,0}};
 155 /* Unused, left here for documentary purposes */
 156 #if 0
 157 const struct dom_sid global_sid_Unix_NFS_Other =                /* Unix other, MS NFS and Apple style */
 158 { 1, 2, {0,0,0,0,0,5}, {88,4,0,0,0,0,0,0,0,0,0,0,0,0,0}};
 159 #endif
 160
 161 /* Unused, left here for documentary purposes */
 162 #if 0
 163 #define SECURITY_NULL_SID_AUTHORITY    0
 164 #define SECURITY_WORLD_SID_AUTHORITY   1
 165 #define SECURITY_LOCAL_SID_AUTHORITY   2
 166 #define SECURITY_CREATOR_SID_AUTHORITY 3
 167 #define SECURITY_NT_AUTHORITY          5
 168 #endif
 169
 170 static struct dom_sid system_sid_array[1] =
 171 { { 1, 1, {0,0,0,0,0,5}, {18,0,0,0,0,0,0,0,0,0,0,0,0,0,0}} };
 172 static const struct security_token system_token = {
 173         .num_sids       = ARRAY_SIZE(system_sid_array),
 174         .sids           = system_sid_array,
 175         .privilege_mask = SE_ALL_PRIVS
 176 };
 177
 178 /****************************************************************************
 179  Lookup string names for SID types.
 180 ****************************************************************************/
 181
 182 static const struct {
 183         enum lsa_SidType sid_type;
 184         const char *string;
 185 } sid_name_type[] = {
 186         {SID_NAME_USE_NONE, "None"},
 187         {SID_NAME_USER, "User"},
 188         {SID_NAME_DOM_GRP, "Domain Group"},
 189         {SID_NAME_DOMAIN, "Domain"},
 190         {SID_NAME_ALIAS, "Local Group"},
 191         {SID_NAME_WKN_GRP, "Well-known Group"},
 192         {SID_NAME_DELETED, "Deleted Account"},
 193         {SID_NAME_INVALID, "Invalid Account"},
 194         {SID_NAME_UNKNOWN, "UNKNOWN"},
 195         {SID_NAME_COMPUTER, "Computer"},
 196         {SID_NAME_LABEL, "Mandatory Label"}
 197 };
 198
 199 const char *sid_type_lookup(uint32_t sid_type)
 200 {
 201         size_t i;
 202
 203         /* Look through list */
 204         for (i=0; i < ARRAY_SIZE(sid_name_type); i++) {
 205                 if (sid_name_type[i].sid_type == sid_type) {
 206                         return sid_name_type[i].string;
 207                 }
 208         }
 209
 210         /* Default return */
 211         return "SID *TYPE* is INVALID";
 212 }
 213
 214 /**************************************************************************
 215  Create the SYSTEM token.
 216 ***************************************************************************/
 217
 218 const struct security_token *get_system_token(void)
 219 {
 220         return &system_token;
 221 }
 222
 223 bool sid_compose(struct dom_sid *dst, const struct dom_sid *domain_sid, uint32_t rid)
 224 {
 225         sid_copy(dst, domain_sid);
 226         return sid_append_rid(dst, rid);
 227 }
 228
 229 /*****************************************************************
 230  Removes the last rid from the end of a sid
 231 *****************************************************************/
 232
 233 bool sid_split_rid(struct dom_sid *sid, uint32_t *rid)
 234 {
 235         if (sid->num_auths > 0) {
 236                 sid->num_auths--;
 237                 if (rid != NULL) {
 238                         *rid = sid->sub_auths[sid->num_auths];
 239                 }
 240                 return true;
 241         }
 242         return false;
 243 }
 244
 245 /*****************************************************************
 246  Return the last rid from the end of a sid
 247 *****************************************************************/
 248
 249 bool sid_peek_rid(const struct dom_sid *sid, uint32_t *rid)
 250 {
 251         if (!sid || !rid)
 252                 return false;
 253
 254         if (sid->num_auths > 0) {
 255                 *rid = sid->sub_auths[sid->num_auths - 1];
 256                 return true;
 257         }
 258         return false;
 259 }
 260
 261 /*****************************************************************
 262  Return the last rid from the end of a sid
 263  and check the sid against the exp_dom_sid
 264 *****************************************************************/
 265
 266 bool sid_peek_check_rid(const struct dom_sid *exp_dom_sid, const struct dom_sid *sid, uint32_t *rid)
 267 {
 268         if (!exp_dom_sid || !sid || !rid)
 269                 return false;
 270
 271         if (sid->num_auths != (exp_dom_sid->num_auths+1)) {
 272                 return false;
 273         }
 274
 275         if (sid_compare_domain(exp_dom_sid, sid)!=0){
 276                 *rid=(-1);
 277                 return false;
 278         }
 279
 280         return sid_peek_rid(sid, rid);
 281 }
 282
 283 /*****************************************************************
 284  Copies a sid
 285 *****************************************************************/
 286
 287 void sid_copy(struct dom_sid *dst, const struct dom_sid *src)
 288 {
 289         int i;
 290
 291         *dst = (struct dom_sid) {
 292                 .sid_rev_num = src->sid_rev_num,
 293                 .num_auths = src->num_auths,
 294         };
 295
 296         memcpy(&dst->id_auth[0], &src->id_auth[0], sizeof(src->id_auth));
 297
 298         for (i = 0; i < src->num_auths; i++)
 299                 dst->sub_auths[i] = src->sub_auths[i];
 300 }
 301
 302 /*****************************************************************
 303  Parse a on-the-wire SID to a struct dom_sid.
 304 *****************************************************************/
 305
 306 ssize_t sid_parse(const uint8_t *inbuf, size_t len, struct dom_sid *sid)
 307 {
 308         DATA_BLOB in = data_blob_const(inbuf, len);
 309         enum ndr_err_code ndr_err;
 310
 311         ndr_err = ndr_pull_struct_blob_all(
 312                 &in, NULL, sid, (ndr_pull_flags_fn_t)ndr_pull_dom_sid);
 313         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 314                 return -1;
 315         }
 316         return ndr_size_dom_sid(sid, 0);
 317 }
 318
 319 /*****************************************************************
 320  See if 2 SIDs are in the same domain
 321  this just compares the leading sub-auths
 322 *****************************************************************/
 323
 324 int sid_compare_domain(const struct dom_sid *sid1, const struct dom_sid *sid2)
 325 {
 326         int n, i;
 327
 328         n = MIN(sid1->num_auths, sid2->num_auths);
 329
 330         for (i = n-1; i >= 0; --i)
 331                 if (sid1->sub_auths[i] != sid2->sub_auths[i])
 332                         return sid1->sub_auths[i] - sid2->sub_auths[i];
 333
 334         return dom_sid_compare_auth(sid1, sid2);
 335 }
 336
 337 /********************************************************************
 338  Add SID to an array SIDs
 339 ********************************************************************/
 340
 341 NTSTATUS add_sid_to_array(TALLOC_CTX *mem_ctx, const struct dom_sid *sid,
 342                           struct dom_sid **sids, uint32_t *num)
 343 {
 344         struct dom_sid *tmp;
 345
 346         if ((*num) == UINT32_MAX) {
 347                 return NT_STATUS_INTEGER_OVERFLOW;
 348         }
 349
 350         tmp = talloc_realloc(mem_ctx, *sids, struct dom_sid, (*num)+1);
 351         if (tmp == NULL) {
 352                 *num = 0;
 353                 return NT_STATUS_NO_MEMORY;
 354         }
 355         *sids = tmp;
 356
 357         sid_copy(&((*sids)[*num]), sid);
 358         *num += 1;
 359
 360         return NT_STATUS_OK;
 361 }
 362
 363
 364 /********************************************************************
 365  Add SID to an array SIDs ensuring that it is not already there
 366 ********************************************************************/
 367
 368 NTSTATUS add_sid_to_array_unique(TALLOC_CTX *mem_ctx, const struct dom_sid *sid,
 369                                  struct dom_sid **sids, uint32_t *num_sids)
 370 {
 371         uint32_t i;
 372
 373         for (i=0; i<(*num_sids); i++) {
 374                 if (dom_sid_equal(sid, &(*sids)[i])) {
 375                         return NT_STATUS_OK;
 376                 }
 377         }
 378
 379         return add_sid_to_array(mem_ctx, sid, sids, num_sids);
 380 }
 381
 382 /********************************************************************
 383  Remove SID from an array
 384 ********************************************************************/
 385
 386 void del_sid_from_array(const struct dom_sid *sid, struct dom_sid **sids,
 387                         uint32_t *num)
 388 {
 389         struct dom_sid *sid_list = *sids;
 390         uint32_t i;
 391
 392         for ( i=0; i<*num; i++ ) {
 393
 394                 /* if we find the SID, then decrement the count
 395                    and break out of the loop */
 396
 397                 if (dom_sid_equal(sid, &sid_list[i])) {
 398                         *num -= 1;
 399                         break;
 400                 }
 401         }
 402
 403         /* This loop will copy the remainder of the array
 404            if i < num of sids in the array */
 405
 406         for ( ; i<*num; i++ ) {
 407                 sid_copy( &sid_list[i], &sid_list[i+1] );
 408         }
 409
 410         return;
 411 }
 412
 413 bool add_rid_to_array_unique(TALLOC_CTX *mem_ctx,
 414                              uint32_t rid, uint32_t **pp_rids, size_t *p_num)
 415 {
 416         size_t i;
 417
 418         for (i=0; i<*p_num; i++) {
 419                 if ((*pp_rids)[i] == rid)
 420                         return true;
 421         }
 422
 423         *pp_rids = talloc_realloc(mem_ctx, *pp_rids, uint32_t, *p_num+1);
 424
 425         if (*pp_rids == NULL) {
 426                 *p_num = 0;
 427                 return false;
 428         }
 429
 430         (*pp_rids)[*p_num] = rid;
 431         *p_num += 1;
 432         return true;
 433 }
 434
 435 bool is_null_sid(const struct dom_sid *sid)
 436 {
 437         const struct dom_sid null_sid = {0};
 438         return dom_sid_equal(sid, &null_sid);
 439 }
 440
 441 /*
 442  * See [MS-LSAT] 3.1.1.1.1 Predefined Translation Database and Corresponding View
 443  */
 444 struct predefined_name_mapping {
 445         const char *name;
 446         enum lsa_SidType type;
 447         struct dom_sid sid;
 448 };
 449
 450 struct predefined_domain_mapping {
 451         const char *domain;
 452         struct dom_sid sid;
 453         size_t num_names;
 454         const struct predefined_name_mapping *names;
 455 };
 456
 457 /* S-1-${AUTHORITY} */
 458 #define _SID0(authority) \
 459         { 1, 0, {0,0,0,0,0,authority}, {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}}
 460 /* S-1-${AUTHORITY}-${SUB1} */
 461 #define _SID1(authority,sub1) \
 462         { 1, 1, {0,0,0,0,0,authority}, {sub1,0,0,0,0,0,0,0,0,0,0,0,0,0,0}}
 463 /* S-1-${AUTHORITY}-${SUB1}-${SUB2} */
 464 #define _SID2(authority,sub1,sub2) \
 465         { 1, 2, {0,0,0,0,0,authority}, {sub1,sub2,0,0,0,0,0,0,0,0,0,0,0,0,0}}
 466
 467 /*
 468  * S-1-0
 469  */
 470 static const struct predefined_name_mapping predefined_names_S_1_0[] = {
 471         {
 472                 .name = "NULL SID",
 473                 .type = SID_NAME_WKN_GRP,
 474                 .sid = _SID1(0, 0), /* S-1-0-0 */
 475         },
 476 };
 477
 478 /*
 479  * S-1-1
 480  */
 481 static const struct predefined_name_mapping predefined_names_S_1_1[] = {
 482         {
 483                 .name = "Everyone",
 484                 .type = SID_NAME_WKN_GRP,
 485                 .sid = _SID1(1, 0), /* S-1-1-0 */
 486         },
 487 };
 488
 489 /*
 490  * S-1-2
 491  */
 492 static const struct predefined_name_mapping predefined_names_S_1_2[] = {
 493         {
 494                 .name = "LOCAL",
 495                 .type = SID_NAME_WKN_GRP,
 496                 .sid = _SID1(2, 0), /* S-1-2-0 */
 497         },
 498 };
 499
 500 /*
 501  * S-1-3
 502  */
 503 static const struct predefined_name_mapping predefined_names_S_1_3[] = {
 504         {
 505                 .name = "CREATOR OWNER",
 506                 .type = SID_NAME_WKN_GRP,
 507                 .sid = _SID1(3, 0), /* S-1-3-0 */
 508         },
 509         {
 510                 .name = "CREATOR GROUP",
 511                 .type = SID_NAME_WKN_GRP,
 512                 .sid = _SID1(3, 1), /* S-1-3-1 */
 513         },
 514         {
 515                 .name = "CREATOR OWNER SERVER",
 516                 .type = SID_NAME_WKN_GRP,
 517                 .sid = _SID1(3, 0), /* S-1-3-2 */
 518         },
 519         {
 520                 .name = "CREATOR GROUP SERVER",
 521                 .type = SID_NAME_WKN_GRP,
 522                 .sid = _SID1(3, 1), /* S-1-3-3 */
 523         },
 524         {
 525                 .name = "OWNER RIGHTS",
 526                 .type = SID_NAME_WKN_GRP,
 527                 .sid = _SID1(3, 4), /* S-1-3-4 */
 528         },
 529 };
 530
 531 /*
 532  * S-1-5 only 'NT Pseudo Domain'
 533  */
 534 static const struct predefined_name_mapping predefined_names_S_1_5p[] = {
 535         {
 536                 .name = "NT Pseudo Domain",
 537                 .type = SID_NAME_DOMAIN,
 538                 .sid = _SID0(5), /* S-1-5 */
 539         },
 540 };
 541
 542 /*
 543  * S-1-5 'NT AUTHORITY'
 544  */
 545 static const struct predefined_name_mapping predefined_names_S_1_5a[] = {
 546         {
 547                 .name = "DIALUP",
 548                 .type = SID_NAME_WKN_GRP,
 549                 .sid = _SID1(5, 1), /* S-1-5-1 */
 550         },
 551         {
 552                 .name = "NETWORK",
 553                 .type = SID_NAME_WKN_GRP,
 554                 .sid = _SID1(5, 2), /* S-1-5-2 */
 555         },
 556         {
 557                 .name = "BATCH",
 558                 .type = SID_NAME_WKN_GRP,
 559                 .sid = _SID1(5, 3), /* S-1-5-3 */
 560         },
 561         {
 562                 .name = "INTERACTIVE",
 563                 .type = SID_NAME_WKN_GRP,
 564                 .sid = _SID1(5, 4), /* S-1-5-4 */
 565         },
 566         {
 567                 .name = "SERVICE",
 568                 .type = SID_NAME_WKN_GRP,
 569                 .sid = _SID1(5, 6), /* S-1-5-6 */
 570         },
 571         {
 572                 .name = "ANONYMOUS LOGON",
 573                 .type = SID_NAME_WKN_GRP,
 574                 .sid = _SID1(5, 7), /* S-1-5-7 */
 575         },
 576         {
 577                 .name = "PROXY",
 578                 .type = SID_NAME_WKN_GRP,
 579                 .sid = _SID1(5, 8), /* S-1-5-8 */
 580         },
 581         {
 582                 .name = "ENTERPRISE DOMAIN CONTROLLERS",
 583                 .type = SID_NAME_WKN_GRP,
 584                 .sid = _SID1(5, 9), /* S-1-5-9 */
 585         },
 586         {
 587                 .name = "SELF",
 588                 .type = SID_NAME_WKN_GRP,
 589                 .sid = _SID1(5, 10), /* S-1-5-10 */
 590         },
 591         {
 592                 .name = "Authenticated Users",
 593                 .type = SID_NAME_WKN_GRP,
 594                 .sid = _SID1(5, 11), /* S-1-5-11 */
 595         },
 596         {
 597                 .name = "RESTRICTED",
 598                 .type = SID_NAME_WKN_GRP,
 599                 .sid = _SID1(5, 12), /* S-1-5-12 */
 600         },
 601         {
 602                 .name = "TERMINAL SERVER USER",
 603                 .type = SID_NAME_WKN_GRP,
 604                 .sid = _SID1(5, 13), /* S-1-5-13 */
 605         },
 606         {
 607                 .name = "REMOTE INTERACTIVE LOGON",
 608                 .type = SID_NAME_WKN_GRP,
 609                 .sid = _SID1(5, 14), /* S-1-5-14 */
 610         },
 611         {
 612                 .name = "This Organization",
 613                 .type = SID_NAME_WKN_GRP,
 614                 .sid = _SID1(5, 15), /* S-1-5-15 */
 615         },
 616         {
 617                 .name = "IUSR",
 618                 .type = SID_NAME_WKN_GRP,
 619                 .sid = _SID1(5, 17), /* S-1-5-17 */
 620         },
 621         {
 622                 .name = "SYSTEM",
 623                 .type = SID_NAME_WKN_GRP,
 624                 .sid = _SID1(5, 18), /* S-1-5-18 */
 625         },
 626         {
 627                 .name = "LOCAL SERVICE",
 628                 .type = SID_NAME_WKN_GRP,
 629                 .sid = _SID1(5, 19), /* S-1-5-19 */
 630         },
 631         {
 632                 .name = "NETWORK SERVICE",
 633                 .type = SID_NAME_WKN_GRP,
 634                 .sid = _SID1(5, 20), /* S-1-5-20 */
 635         },
 636         {
 637                 .name = "WRITE RESTRICTED",
 638                 .type = SID_NAME_WKN_GRP,
 639                 .sid = _SID1(5, 33), /* S-1-5-33 */
 640         },
 641         {
 642                 .name = "Other Organization",
 643                 .type = SID_NAME_WKN_GRP,
 644                 .sid = _SID1(5, 1000), /* S-1-5-1000 */
 645         },
 646 };
 647
 648 /*
 649  * S-1-5-32
 650  */
 651 static const struct predefined_name_mapping predefined_names_S_1_5_32[] = {
 652         {
 653                 .name = "BUILTIN",
 654                 .type = SID_NAME_DOMAIN,
 655                 .sid = _SID1(5, 32), /* S-1-5-32 */
 656         },
 657 };
 658
 659 /*
 660  * S-1-5-64
 661  */
 662 static const struct predefined_name_mapping predefined_names_S_1_5_64[] = {
 663         {
 664                 .name = "NTLM Authentication",
 665                 .type = SID_NAME_WKN_GRP,
 666                 .sid = _SID2(5, 64, 10), /* S-1-5-64-10 */
 667         },
 668         {
 669                 .name = "SChannel Authentication",
 670                 .type = SID_NAME_WKN_GRP,
 671                 .sid = _SID2(5, 64, 14), /* S-1-5-64-14 */
 672         },
 673         {
 674                 .name = "Digest Authentication",
 675                 .type = SID_NAME_WKN_GRP,
 676                 .sid = _SID2(5, 64, 21), /* S-1-5-64-21 */
 677         },
 678 };
 679
 680 /*
 681  * S-1-7
 682  */
 683 static const struct predefined_name_mapping predefined_names_S_1_7[] = {
 684         {
 685                 .name = "Internet$",
 686                 .type = SID_NAME_DOMAIN,
 687                 .sid = _SID0(7), /* S-1-7 */
 688         },
 689 };
 690
 691 /*
 692  * S-1-16
 693  */
 694 static const struct predefined_name_mapping predefined_names_S_1_16[] = {
 695         {
 696                 .name = "Mandatory Label",
 697                 .type = SID_NAME_DOMAIN,
 698                 .sid = _SID0(16), /* S-1-16 */
 699         },
 700         {
 701                 .name = "Untrusted Mandatory Level",
 702                 .type = SID_NAME_LABEL,
 703                 .sid = _SID1(16, 0), /* S-1-16-0 */
 704         },
 705         {
 706                 .name = "Low Mandatory Level",
 707                 .type = SID_NAME_LABEL,
 708                 .sid = _SID1(16, 4096), /* S-1-16-4096 */
 709         },
 710         {
 711                 .name = "Medium Mandatory Level",
 712                 .type = SID_NAME_LABEL,
 713                 .sid = _SID1(16, 8192), /* S-1-16-8192 */
 714         },
 715         {
 716                 .name = "High Mandatory Level",
 717                 .type = SID_NAME_LABEL,
 718                 .sid = _SID1(16, 12288), /* S-1-16-12288 */
 719         },
 720         {
 721                 .name = "System Mandatory Level",
 722                 .type = SID_NAME_LABEL,
 723                 .sid = _SID1(16, 16384), /* S-1-16-16384 */
 724         },
 725         {
 726                 .name = "Protected Process Mandatory Level",
 727                 .type = SID_NAME_LABEL,
 728                 .sid = _SID1(16, 20480), /* S-1-16-20480 */
 729         },
 730 };
 731
 732 static const struct predefined_domain_mapping predefined_domains[] = {
 733         {
 734                 .domain = "",
 735                 .sid = _SID0(0), /* S-1-0 */
 736                 .num_names = ARRAY_SIZE(predefined_names_S_1_0),
 737                 .names = predefined_names_S_1_0,
 738         },
 739         {
 740                 .domain = "",
 741                 .sid = _SID0(1), /* S-1-1 */
 742                 .num_names = ARRAY_SIZE(predefined_names_S_1_1),
 743                 .names = predefined_names_S_1_1,
 744         },
 745         {
 746                 .domain = "",
 747                 .sid = _SID0(2), /* S-1-2 */
 748                 .num_names = ARRAY_SIZE(predefined_names_S_1_2),
 749                 .names = predefined_names_S_1_2,
 750         },
 751         {
 752                 .domain = "",
 753                 .sid = _SID0(3), /* S-1-3 */
 754                 .num_names = ARRAY_SIZE(predefined_names_S_1_3),
 755                 .names = predefined_names_S_1_3,
 756         },
 757         {
 758                 .domain = "",
 759                 .sid = _SID0(3), /* S-1-3 */
 760                 .num_names = ARRAY_SIZE(predefined_names_S_1_3),
 761                 .names = predefined_names_S_1_3,
 762         },
 763         /*
 764          * S-1-5 is split here
 765          *
 766          * 'NT Pseudo Domain' has precedence before 'NT AUTHORITY'.
 767          *
 768          * In a LookupSids with multiple sids e.g. S-1-5 and S-1-5-7
 769          * the domain section (struct lsa_DomainInfo) gets
 770          * 'NT Pseudo Domain' with S-1-5. If asked in reversed order
 771          * S-1-5-7 and then S-1-5, you get struct lsa_DomainInfo
 772          * with 'NT AUTHORITY' and S-1-5.
 773          */
 774         {
 775                 .domain = "NT Pseudo Domain",
 776                 .sid = _SID0(5), /* S-1-5 */
 777                 .num_names = ARRAY_SIZE(predefined_names_S_1_5p),
 778                 .names = predefined_names_S_1_5p,
 779         },
 780         {
 781                 .domain = "NT AUTHORITY",
 782                 .sid = _SID0(5), /* S-1-5 */
 783                 .num_names = ARRAY_SIZE(predefined_names_S_1_5a),
 784                 .names = predefined_names_S_1_5a,
 785         },
 786         {
 787                 .domain = "BUILTIN",
 788                 .sid = _SID1(5, 32), /* S-1-5-32 */
 789                 .num_names = ARRAY_SIZE(predefined_names_S_1_5_32),
 790                 .names = predefined_names_S_1_5_32,
 791         },
 792         /*
 793          * 'NT AUTHORITY' again with S-1-5-64 this time
 794          */
 795         {
 796                 .domain = "NT AUTHORITY",
 797                 .sid = _SID1(5, 64), /* S-1-5-64 */
 798                 .num_names = ARRAY_SIZE(predefined_names_S_1_5_64),
 799                 .names = predefined_names_S_1_5_64,
 800         },
 801         {
 802                 .domain = "Internet$",
 803                 .sid = _SID0(7), /* S-1-7 */
 804                 .num_names = ARRAY_SIZE(predefined_names_S_1_7),
 805                 .names = predefined_names_S_1_7,
 806         },
 807         {
 808                 .domain = "Mandatory Label",
 809                 .sid = _SID0(16), /* S-1-16 */
 810                 .num_names = ARRAY_SIZE(predefined_names_S_1_16),
 811                 .names = predefined_names_S_1_16,
 812         },
 813 };
 814
 815 NTSTATUS dom_sid_lookup_predefined_name(const char *name,
 816                                         const struct dom_sid **sid,
 817                                         enum lsa_SidType *type,
 818                                         const struct dom_sid **authority_sid,
 819                                         const char **authority_name)
 820 {
 821         size_t di;
 822         const char *domain = "";
 823         size_t domain_len = 0;
 824         const char *p;
 825         bool match;
 826
 827         *sid = NULL;
 828         *type = SID_NAME_UNKNOWN;
 829         *authority_sid = NULL;
 830         *authority_name = NULL;
 831
 832         if (name == NULL) {
 833                 name = "";
 834         }
 835
 836         p = strchr(name, '\\');
 837         if (p != NULL) {
 838                 domain = name;
 839                 domain_len = PTR_DIFF(p, domain);
 840                 name = p + 1;
 841         }
 842
 843         match = strequal(name, "");
 844         if (match) {
 845                 /*
 846                  * Strange, but that's what W2012R2 does.
 847                  */
 848                 name = "BUILTIN";
 849         }
 850
 851         for (di = 0; di < ARRAY_SIZE(predefined_domains); di++) {
 852                 const struct predefined_domain_mapping *d =
 853                         &predefined_domains[di];
 854                 size_t ni;
 855
 856                 if (domain_len != 0) {
 857                         int cmp;
 858
 859                         cmp = strncasecmp(d->domain, domain, domain_len);
 860                         if (cmp != 0) {
 861                                 continue;
 862                         }
 863                 }
 864
 865                 for (ni = 0; ni < d->num_names; ni++) {
 866                         const struct predefined_name_mapping *n =
 867                                 &d->names[ni];
 868
 869                         match = strequal(n->name, name);
 870                         if (!match) {
 871                                 continue;
 872                         }
 873
 874                         *sid = &n->sid;
 875                         *type = n->type;
 876                         *authority_sid = &d->sid;
 877                         *authority_name = d->domain;
 878                         return NT_STATUS_OK;
 879                 }
 880         }
 881
 882         return NT_STATUS_NONE_MAPPED;
 883 }
 884
 885 bool dom_sid_lookup_is_predefined_domain(const char *domain)
 886 {
 887         size_t di;
 888         bool match;
 889
 890         if (domain == NULL) {
 891                 domain = "";
 892         }
 893
 894         match = strequal(domain, "");
 895         if (match) {
 896                 /*
 897                  * Strange, but that's what W2012R2 does.
 898                  */
 899                 domain = "BUILTIN";
 900         }
 901
 902         for (di = 0; di < ARRAY_SIZE(predefined_domains); di++) {
 903                 const struct predefined_domain_mapping *d =
 904                         &predefined_domains[di];
 905                 int cmp;
 906
 907                 cmp = strcasecmp(d->domain, domain);
 908                 if (cmp != 0) {
 909                         continue;
 910                 }
 911
 912                 return true;
 913         }
 914
 915         return false;
 916 }
 917
 918 NTSTATUS dom_sid_lookup_predefined_sid(const struct dom_sid *sid,
 919                                        const char **name,
 920                                        enum lsa_SidType *type,
 921                                        const struct dom_sid **authority_sid,
 922                                        const char **authority_name)
 923 {
 924         size_t di;
 925         bool match_domain = false;
 926
 927         *name = NULL;
 928         *type = SID_NAME_UNKNOWN;
 929         *authority_sid = NULL;
 930         *authority_name = NULL;
 931
 932         if (sid == NULL) {
 933                 return NT_STATUS_INVALID_SID;
 934         }
 935
 936         for (di = 0; di < ARRAY_SIZE(predefined_domains); di++) {
 937                 const struct predefined_domain_mapping *d =
 938                         &predefined_domains[di];
 939                 size_t ni;
 940                 int cmp;
 941
 942                 cmp = dom_sid_compare_auth(&d->sid, sid);
 943                 if (cmp != 0) {
 944                         continue;
 945                 }
 946
 947                 match_domain = true;
 948
 949                 for (ni = 0; ni < d->num_names; ni++) {
 950                         const struct predefined_name_mapping *n =
 951                                 &d->names[ni];
 952
 953                         cmp = dom_sid_compare(&n->sid, sid);
 954                         if (cmp != 0) {
 955                                 continue;
 956                         }
 957
 958                         *name = n->name;
 959                         *type = n->type;
 960                         *authority_sid = &d->sid;
 961                         *authority_name = d->domain;
 962                         return NT_STATUS_OK;
 963                 }
 964         }
 965
 966         if (!match_domain) {
 967                 return NT_STATUS_INVALID_SID;
 968         }
 969
 970         return NT_STATUS_NONE_MAPPED;
 971 }