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 */
  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 */
  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 */
  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 NTSTATUS dom_sid_lookup_predefined_sid(const struct dom_sid *sid,
 883                                        const char **name,
 884                                        enum lsa_SidType *type,
 885                                        const struct dom_sid **authority_sid,
 886                                        const char **authority_name)
 887 {
 888         size_t di;
 889         bool match_domain = false;
 890
 891         *name = NULL;
 892         *type = SID_NAME_UNKNOWN;
 893         *authority_sid = NULL;
 894         *authority_name = NULL;
 895
 896         if (sid == NULL) {
 897                 return NT_STATUS_INVALID_SID;
 898         }
 899
 900         for (di = 0; di < ARRAY_SIZE(predefined_domains); di++) {
 901                 const struct predefined_domain_mapping *d =
 902                         &predefined_domains[di];
 903                 size_t ni;
 904                 int cmp;
 905
 906                 cmp = dom_sid_compare_auth(&d->sid, sid);
 907                 if (cmp != 0) {
 908                         continue;
 909                 }
 910
 911                 match_domain = true;
 912
 913                 for (ni = 0; ni < d->num_names; ni++) {
 914                         const struct predefined_name_mapping *n =
 915                                 &d->names[ni];
 916
 917                         cmp = dom_sid_compare(&n->sid, sid);
 918                         if (cmp != 0) {
 919                                 continue;
 920                         }
 921
 922                         *name = n->name;
 923                         *type = n->type;
 924                         *authority_sid = &d->sid;
 925                         *authority_name = d->domain;
 926                         return NT_STATUS_OK;
 927                 }
 928         }
 929
 930         if (!match_domain) {
 931                 return NT_STATUS_INVALID_SID;
 932         }
 933
 934         return NT_STATUS_NONE_MAPPED;
 935 }