source/lib/privileges.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Privileges handling functions
   4    Copyright (C) Jean François Micouleau        1998-2001
   5    Copyright (C) Simo Sorce                     2002-2003
   6    Copyright (C) Gerald (Jerry) Carter          2004
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 2 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program; if not, write to the Free Software
  20    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21 */
  22
  23
  24 #include "includes.h"
  25
  26 #define PRIVPREFIX              "PRIV_"
  27
  28 #define GENERATE_LUID_LOW(x)    (x)+1;
  29
  30 static SE_PRIV se_priv_all  = SE_ALL_PRIVS;
  31 static SE_PRIV se_priv_end  = SE_END;
  32 static SE_PRIV se_priv_none = SE_NONE;
  33
  34 /* Define variables for all privileges so we can use the
  35    SE_PRIV* in the various se_priv_XXX() functions */
  36
  37 const SE_PRIV se_machine_account = SE_MACHINE_ACCOUNT;
  38 const SE_PRIV se_print_operator  = SE_PRINT_OPERATOR;
  39 const SE_PRIV se_add_users       = SE_ADD_USERS;
  40 const SE_PRIV se_disk_operators  = SE_DISK_OPERATOR;
  41 const SE_PRIV se_remote_shutdown = SE_REMOTE_SHUTDOWN;
  42
  43 PRIVS privs[] = {
  44 #if 0   /* usrmgr will display these twice if you include them.  We don't
  45            use them but we'll keep the bitmasks reserved in privileges.h anyways */
  46
  47         {SE_NETWORK_LOGON,              "SeNetworkLogonRight",                  "Access this computer from network"},
  48         {SE_INTERACTIVE_LOGON,          "SeInteractiveLogonRight",              "Log on locally"},
  49         {SE_BATCH_LOGON,                "SeBatchLogonRight",                    "Log on as a batch job"},
  50         {SE_SERVICE_LOGON,              "SeServiceLogonRight",                  "Log on as a service"},
  51 #endif
  52         {SE_MACHINE_ACCOUNT,            "SeMachineAccountPrivilege",            "Add machines to domain"},
  53         {SE_PRINT_OPERATOR,             "SePrintOperatorPrivilege",             "Manage printers"},
  54         {SE_ADD_USERS,                  "SeAddUsersPrivilege",                  "Add users and groups to the domain"},
  55         {SE_REMOTE_SHUTDOWN,            "SeRemoteShutdownPrivilege",            "Force shutdown from a remote system"},
  56         {SE_DISK_OPERATOR,              "SeDiskOperatorPrivilege",              "Manage disk shares"},
  57
  58         {SE_END,                        "",                                     ""}
  59 };
  60
  61 #if 0   /* not needed currently */
  62 PRIVS privs[] = {
  63         {SE_ASSIGN_PRIMARY_TOKEN,       "SeAssignPrimaryTokenPrivilege",        "Assign Primary Token"},
  64         {SE_CREATE_TOKEN,               "SeCreateTokenPrivilege",               "Create Token"},
  65         {SE_LOCK_MEMORY,                "SeLockMemoryPrivilege",                "Lock Memory"},
  66         {SE_INCREASE_QUOTA,             "SeIncreaseQuotaPrivilege",             "Increase Quota"},
  67         {SE_UNSOLICITED_INPUT,          "SeUnsolicitedInputPrivilege",          "Unsolicited Input"},
  68         {SE_TCB,                        "SeTcbPrivilege",                       "Act as part of the operating system"},
  69         {SE_SECURITY,                   "SeSecurityPrivilege",                  "Security Privilege"},
  70         {SE_TAKE_OWNERSHIP,             "SeTakeOwnershipPrivilege",             "Take Ownership Privilege"},
  71         {SE_LOAD_DRIVER,                "SeLocalDriverPrivilege",               "Local Driver Privilege"},
  72         {SE_SYSTEM_PROFILE,             "SeSystemProfilePrivilege",             "System Profile Privilege"},
  73         {SE_SYSTEM_TIME,                "SeSystemtimePrivilege",                "System Time"},
  74         {SE_PROF_SINGLE_PROCESS,        "SeProfileSingleProcessPrivilege",      "Profile Single Process Privilege"},
  75         {SE_INC_BASE_PRIORITY,          "SeIncreaseBasePriorityPrivilege",      "Increase Base Priority Privilege"},
  76         {SE_CREATE_PAGEFILE,            "SeCreatePagefilePrivilege",            "Create Pagefile Privilege"},
  77         {SE_CREATE_PERMANENT,           "SeCreatePermanentPrivilege",           "Create Permanent"},
  78         {SE_BACKUP,                     "SeBackupPrivilege",                    "Backup Privilege"},
  79         {SE_RESTORE,                    "SeRestorePrivilege",                   "Restore Privilege"},
  80         {SE_SHUTDOWN,                   "SeShutdownPrivilege",                  "Shutdown Privilege"},
  81         {SE_DEBUG,                      "SeDebugPrivilege",                     "Debug Privilege"},
  82         {SE_AUDIT,                      "SeAuditPrivilege",                     "Audit"},
  83         {SE_SYSTEM_ENVIRONMENT,         "SeSystemEnvironmentPrivilege",         "System Environment Privilege"},
  84         {SE_CHANGE_NOTIFY,              "SeChangeNotifyPrivilege",              "Change Notify"},
  85         {SE_UNDOCK,                     "SeUndockPrivilege",                    "Undock"},
  86         {SE_SYNC_AGENT,                 "SeSynchronizationAgentPrivilege",      "Synchronization Agent"},
  87         {SE_ENABLE_DELEGATION,          "SeEnableDelegationPrivilege",          "Enable Delegation"},
  88         {SE_ALL_PRIVS,                  "SeAllPrivileges",                      "All Privileges"}
  89         {SE_END,                        "",                                     ""}
  90 };
  91 #endif
  92
  93 typedef struct priv_sid_list {
  94         SE_PRIV privilege;
  95         SID_LIST sids;
  96 } PRIV_SID_LIST;
  97
  98
  99 /***************************************************************************
 100  copy an SE_PRIV structure
 101 ****************************************************************************/
 102
 103 BOOL se_priv_copy( SE_PRIV *dst, const SE_PRIV *src )
 104 {
 105         if ( !dst || !src )
 106                 return False;
 107
 108         memcpy( dst, src, sizeof(SE_PRIV) );
 109
 110         return True;
 111 }
 112
 113 /***************************************************************************
 114  combine 2 SE_PRIV structures and store the resulting set in mew_mask
 115 ****************************************************************************/
 116
 117 static void se_priv_add( SE_PRIV *mask, const SE_PRIV *addpriv )
 118 {
 119         int i;
 120
 121         for ( i=0; i<SE_PRIV_MASKSIZE; i++ ) {
 122                 mask->mask[i] |= addpriv->mask[i];
 123         }
 124 }
 125
 126 /***************************************************************************
 127  remove one SE_PRIV sytucture from another and store the resulting set
 128  in mew_mask
 129 ****************************************************************************/
 130
 131 static void se_priv_remove( SE_PRIV *mask, const SE_PRIV *removepriv )
 132 {
 133         int i;
 134
 135         for ( i=0; i<SE_PRIV_MASKSIZE; i++ ) {
 136                 mask->mask[i] &= ~removepriv->mask[i];
 137         }
 138 }
 139
 140 /***************************************************************************
 141  invert a given SE_PRIV and store the set in new_mask
 142 ****************************************************************************/
 143
 144 static void se_priv_invert( SE_PRIV *new_mask, const SE_PRIV *mask )
 145 {
 146         SE_PRIV allprivs;
 147
 148         se_priv_copy( &allprivs, &se_priv_all );
 149         se_priv_remove( &allprivs, mask );
 150         se_priv_copy( new_mask, &allprivs );
 151 }
 152
 153 /***************************************************************************
 154  check if 2 SE_PRIV structure are equal
 155 ****************************************************************************/
 156
 157 static BOOL se_priv_equal( const SE_PRIV *mask1, const SE_PRIV *mask2 )
 158 {
 159         return ( memcmp(mask1, mask2, sizeof(SE_PRIV)) == 0 );
 160 }
 161
 162
 163 /***************************************************************************
 164  dump an SE_PRIV structure to the log files
 165 ****************************************************************************/
 166
 167 void dump_se_priv( int dbg_cl, int dbg_lvl, const SE_PRIV *mask )
 168 {
 169         int i;
 170
 171         DEBUGADDC( dbg_cl, dbg_lvl,("SE_PRIV "));
 172
 173         for ( i=0; i<SE_PRIV_MASKSIZE; i++ ) {
 174                 DEBUGADDC( dbg_cl, dbg_lvl,(" 0x%x", mask->mask[i] ));
 175         }
 176
 177         DEBUGADDC( dbg_cl, dbg_lvl, ("\n"));
 178 }
 179
 180 /***************************************************************************
 181  Retrieve the privilege mask (set) for a given SID
 182 ****************************************************************************/
 183
 184 static BOOL get_privileges( const DOM_SID *sid, SE_PRIV *mask )
 185 {
 186         TDB_CONTEXT *tdb = get_account_pol_tdb();
 187         fstring keystr;
 188         TDB_DATA key, data;
 189
 190         /* Fail if the admin has not enable privileges */
 191
 192         if ( !lp_enable_privileges() ) {
 193                 return False;
 194         }
 195
 196         if ( !tdb )
 197                 return False;
 198
 199         /* PRIV_<SID> (NULL terminated) as the key */
 200
 201         fstr_sprintf( keystr, "%s%s", PRIVPREFIX, sid_string_static(sid) );
 202         key.dptr = keystr;
 203         key.dsize = strlen(keystr) + 1;
 204
 205         data = tdb_fetch( tdb, key );
 206
 207         if ( !data.dptr ) {
 208                 DEBUG(3,("get_privileges: No privileges assigned to SID [%s]\n",
 209                         sid_string_static(sid)));
 210                 return False;
 211         }
 212
 213         SMB_ASSERT( data.dsize == sizeof( SE_PRIV ) );
 214
 215         se_priv_copy( mask, (SE_PRIV*)data.dptr );
 216
 217
 218         return True;
 219 }
 220
 221 /***************************************************************************
 222  Store the privilege mask (set) for a given SID
 223 ****************************************************************************/
 224
 225 static BOOL set_privileges( const DOM_SID *sid, SE_PRIV *mask )
 226 {
 227         TDB_CONTEXT *tdb = get_account_pol_tdb();
 228         fstring keystr;
 229         TDB_DATA key, data;
 230
 231         if ( !tdb )
 232                 return False;
 233
 234         /* PRIV_<SID> (NULL terminated) as the key */
 235
 236         fstr_sprintf( keystr, "%s%s", PRIVPREFIX, sid_string_static(sid) );
 237         key.dptr = keystr;
 238         key.dsize = strlen(keystr) + 1;
 239
 240         /* no packing.  static size structure, just write it out */
 241
 242         data.dptr  = (char*)mask;
 243         data.dsize = sizeof(SE_PRIV);
 244
 245         return ( tdb_store(tdb, key, data, TDB_REPLACE) != -1 );
 246 }
 247
 248 /****************************************************************************
 249  check if the privilege is in the privilege list
 250 ****************************************************************************/
 251
 252 static BOOL is_privilege_assigned( SE_PRIV *privileges, SE_PRIV *check )
 253 {
 254         SE_PRIV p1, p2;
 255
 256         if ( !privileges || !check )
 257                 return False;
 258
 259         se_priv_copy( &p1, check );
 260
 261         /* invert the SE_PRIV we want to check for and remove that from the
 262            original set.  If we are left with the SE_PRIV we are checking
 263            for then return True */
 264
 265         se_priv_invert( &p1, check );
 266         se_priv_copy( &p2, privileges );
 267         se_priv_remove( &p2, &p1 );
 268
 269         return se_priv_equal( &p2, check );
 270 }
 271
 272 /****************************************************************************
 273  add a privilege to a privilege array
 274  ****************************************************************************/
 275
 276 static BOOL privilege_set_add(PRIVILEGE_SET *priv_set, LUID_ATTR set)
 277 {
 278         LUID_ATTR *new_set;
 279
 280         /* we can allocate memory to add the new privilege */
 281
 282         new_set = TALLOC_REALLOC_ARRAY(priv_set->mem_ctx, priv_set->set, LUID_ATTR, priv_set->count + 1);
 283         if ( !new_set ) {
 284                 DEBUG(0,("privilege_set_add: failed to allocate memory!\n"));
 285                 return False;
 286         }
 287
 288         new_set[priv_set->count].luid.high = set.luid.high;
 289         new_set[priv_set->count].luid.low = set.luid.low;
 290         new_set[priv_set->count].attr = set.attr;
 291
 292         priv_set->count++;
 293         priv_set->set = new_set;
 294
 295         return True;
 296 }
 297
 298 /*********************************************************************
 299  Generate the LUID_ATTR structure based on a bitmask
 300 *********************************************************************/
 301
 302 LUID_ATTR get_privilege_luid( SE_PRIV *mask )
 303 {
 304         LUID_ATTR priv_luid;
 305         int i;
 306
 307         priv_luid.attr = 0;
 308         priv_luid.luid.high = 0;
 309
 310         for ( i=0; !se_priv_equal(&privs[i].se_priv, &se_priv_end); i++ ) {
 311
 312                 /* just use the index+1 (so its non-zero) into the
 313                    array as the lower portion of the LUID */
 314
 315                 if ( se_priv_equal( &privs[i].se_priv, mask ) ) {
 316                         priv_luid.luid.low = GENERATE_LUID_LOW(i);
 317                 }
 318         }
 319
 320         return priv_luid;
 321 }
 322
 323 /*********************************************************************
 324  Generate the LUID_ATTR structure based on a bitmask
 325 *********************************************************************/
 326
 327 const char* get_privilege_dispname( const char *name )
 328 {
 329         int i;
 330
 331         for ( i=0; !se_priv_equal(&privs[i].se_priv, &se_priv_end); i++ ) {
 332
 333                 if ( strequal( privs[i].name, name ) ) {
 334                         return privs[i].description;
 335                 }
 336         }
 337
 338         return NULL;
 339 }
 340
 341 /*********************************************************************
 342  get a list of all privleges for all sids the in list
 343 *********************************************************************/
 344
 345 BOOL get_privileges_for_sids(SE_PRIV *privileges, DOM_SID *slist, int scount)
 346 {
 347         SE_PRIV mask;
 348         int i;
 349         BOOL found = False;
 350
 351         se_priv_copy( privileges, &se_priv_none );
 352
 353         for ( i=0; i<scount; i++ ) {
 354                 /* don't add unless we actually have a privilege assigned */
 355
 356                 if ( !get_privileges( &slist[i], &mask ) )
 357                         continue;
 358
 359                 DEBUG(5,("get_privileges_for_sids: sid = %s\nPrivilege set:\n",
 360                         sid_string_static(&slist[i])));
 361                 dump_se_priv( DBGC_ALL, 5, &mask );
 362
 363                 se_priv_add( privileges, &mask );
 364                 found = True;
 365         }
 366
 367         return found;
 368 }
 369
 370
 371 /*********************************************************************
 372  travseral functions for privilege_enumerate_accounts
 373 *********************************************************************/
 374
 375 static int priv_traverse_fn(TDB_CONTEXT *t, TDB_DATA key, TDB_DATA data, void *state)
 376 {
 377         PRIV_SID_LIST *priv = state;
 378         int  prefixlen = strlen(PRIVPREFIX);
 379         DOM_SID sid;
 380         fstring sid_string;
 381
 382         /* easy check first */
 383
 384         if ( data.dsize != sizeof(SE_PRIV) )
 385                 return 0;
 386
 387         /* check we have a PRIV_+SID entry */
 388
 389         if ( strncmp(key.dptr, PRIVPREFIX, prefixlen) != 0)
 390                 return 0;
 391
 392         /* check to see if we are looking for a particular privilege */
 393
 394         if ( !se_priv_equal(&priv->privilege, &se_priv_none) ) {
 395                 SE_PRIV mask;
 396
 397                 se_priv_copy( &mask, (SE_PRIV*)data.dptr );
 398
 399                 /* if the SID does not have the specified privilege
 400                    then just return */
 401
 402                 if ( !is_privilege_assigned( &mask, &priv->privilege) )
 403                         return 0;
 404         }
 405
 406         fstrcpy( sid_string, &key.dptr[strlen(PRIVPREFIX)] );
 407
 408         if ( !string_to_sid(&sid, sid_string) ) {
 409                 DEBUG(0,("travsersal_fn_enum__acct: Could not convert SID [%s]\n",
 410                         sid_string));
 411                 return 0;
 412         }
 413
 414         add_sid_to_array( &sid, &priv->sids.list, &priv->sids.count );
 415
 416         return 0;
 417 }
 418
 419 /*********************************************************************
 420  Retreive list of privileged SIDs (for _lsa_enumerate_accounts()
 421 *********************************************************************/
 422
 423 NTSTATUS privilege_enumerate_accounts(DOM_SID **sids, int *num_sids)
 424 {
 425         TDB_CONTEXT *tdb = get_account_pol_tdb();
 426         PRIV_SID_LIST priv;
 427
 428         ZERO_STRUCT(priv);
 429
 430         se_priv_copy( &priv.privilege, &se_priv_none );
 431
 432         tdb_traverse( tdb, priv_traverse_fn, &priv);
 433
 434         /* give the memory away; caller will free */
 435
 436         *sids      = priv.sids.list;
 437         *num_sids  = priv.sids.count;
 438
 439         return NT_STATUS_OK;
 440 }
 441
 442 /***************************************************************************
 443  Add privilege to sid
 444 ****************************************************************************/
 445
 446 BOOL grant_privilege(const DOM_SID *sid, SE_PRIV *priv_mask)
 447 {
 448         SE_PRIV old_mask, new_mask;
 449
 450         if ( get_privileges( sid, &old_mask ) )
 451                 se_priv_copy( &new_mask, &old_mask );
 452         else
 453                 se_priv_copy( &new_mask, &se_priv_none );
 454
 455         se_priv_add( &new_mask, priv_mask );
 456
 457         DEBUG(10,("grant_privilege: %s\n", sid_string_static(sid)));
 458
 459         DEBUGADD( 10, ("original privilege mask:\n"));
 460         dump_se_priv( DBGC_ALL, 10, &old_mask );
 461
 462         DEBUGADD( 10, ("new privilege mask:\n"));
 463         dump_se_priv( DBGC_ALL, 10, &new_mask );
 464
 465         return set_privileges( sid, &new_mask );
 466 }
 467
 468 /*********************************************************************
 469  Add a privilege based on its name
 470 *********************************************************************/
 471
 472 BOOL grant_privilege_by_name(DOM_SID *sid, const char *name)
 473 {
 474         int i;
 475
 476         for ( i=0; !se_priv_equal(&privs[i].se_priv, &se_priv_end); i++ ) {
 477                 if ( strequal(privs[i].name, name) ) {
 478                         return grant_privilege( sid, &privs[i].se_priv );
 479                 }
 480         }
 481
 482         DEBUG(3, ("grant_privilege_by_name: No Such Privilege Found (%s)\n", name));
 483
 484         return False;
 485 }
 486
 487 /***************************************************************************
 488  Remove privilege from sid
 489 ****************************************************************************/
 490
 491 BOOL revoke_privilege(const DOM_SID *sid, SE_PRIV *priv_mask)
 492 {
 493         SE_PRIV mask;
 494
 495         /* if the user has no privileges, then we can't revoke any */
 496
 497         if ( !get_privileges( sid, &mask ) )
 498                 return True;
 499
 500         DEBUG(10,("revoke_privilege: %s\n", sid_string_static(sid)));
 501
 502         DEBUGADD( 10, ("original privilege mask:\n"));
 503         dump_se_priv( DBGC_ALL, 10, &mask );
 504
 505         se_priv_remove( &mask, priv_mask );
 506
 507         DEBUGADD( 10, ("new privilege mask:\n"));
 508         dump_se_priv( DBGC_ALL, 10, &mask );
 509
 510         return set_privileges( sid, &mask );
 511 }
 512
 513 /*********************************************************************
 514  Revoke all privileges
 515 *********************************************************************/
 516
 517 BOOL revoke_all_privileges( DOM_SID *sid )
 518 {
 519         return revoke_privilege( sid, &se_priv_all );
 520 }
 521
 522 /*********************************************************************
 523  Add a privilege based on its name
 524 *********************************************************************/
 525
 526 BOOL revoke_privilege_by_name(DOM_SID *sid, const char *name)
 527 {
 528         int i;
 529
 530         for ( i=0; !se_priv_equal(&privs[i].se_priv, &se_priv_end); i++ ) {
 531                 if ( strequal(privs[i].name, name) ) {
 532                         return revoke_privilege( sid, &privs[i].se_priv );
 533                 }
 534         }
 535
 536         DEBUG(3, ("revoke_privilege_by_name: No Such Privilege Found (%s)\n", name));
 537
 538         return False;
 539 }
 540
 541 /***************************************************************************
 542  Retrieve the SIDs assigned to a given privilege
 543 ****************************************************************************/
 544
 545 NTSTATUS privilege_create_account(const DOM_SID *sid )
 546 {
 547         return ( grant_privilege(sid, &se_priv_none) ? NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL);
 548 }
 549
 550 /****************************************************************************
 551  initialise a privilege list and set the talloc context
 552  ****************************************************************************/
 553 NTSTATUS privilege_set_init(PRIVILEGE_SET *priv_set)
 554 {
 555         TALLOC_CTX *mem_ctx;
 556
 557         ZERO_STRUCTP( priv_set );
 558
 559         mem_ctx = talloc_init("privilege set");
 560         if ( !mem_ctx ) {
 561                 DEBUG(0,("privilege_set_init: failed to initialize talloc ctx!\n"));
 562                 return NT_STATUS_NO_MEMORY;
 563         }
 564
 565         priv_set->mem_ctx = mem_ctx;
 566
 567         return NT_STATUS_OK;
 568 }
 569
 570 /****************************************************************************
 571   initialise a privilege list and with someone else's talloc context
 572 ****************************************************************************/
 573
 574 NTSTATUS privilege_set_init_by_ctx(TALLOC_CTX *mem_ctx, PRIVILEGE_SET *priv_set)
 575 {
 576         ZERO_STRUCTP( priv_set );
 577
 578         priv_set->mem_ctx = mem_ctx;
 579         priv_set->ext_ctx = True;
 580
 581         return NT_STATUS_OK;
 582 }
 583
 584 /****************************************************************************
 585  Free all memory used by a PRIVILEGE_SET
 586 ****************************************************************************/
 587
 588 void privilege_set_free(PRIVILEGE_SET *priv_set)
 589 {
 590         if ( !priv_set )
 591                 return;
 592
 593         if ( !( priv_set->ext_ctx ) )
 594                 talloc_destroy( priv_set->mem_ctx );
 595
 596         ZERO_STRUCTP( priv_set );
 597 }
 598
 599 /****************************************************************************
 600  duplicate alloc luid_attr
 601  ****************************************************************************/
 602
 603 NTSTATUS dup_luid_attr(TALLOC_CTX *mem_ctx, LUID_ATTR **new_la, LUID_ATTR *old_la, int count)
 604 {
 605         int i;
 606
 607         /* don't crash if the source pointer is NULL (since we don't
 608            do priviledges now anyways) */
 609
 610         if ( !old_la )
 611                 return NT_STATUS_OK;
 612
 613         *new_la = TALLOC_ARRAY(mem_ctx, LUID_ATTR, count);
 614         if ( !*new_la ) {
 615                 DEBUG(0,("dup_luid_attr: failed to alloc new LUID_ATTR array [%d]\n", count));
 616                 return NT_STATUS_NO_MEMORY;
 617         }
 618
 619         for (i=0; i<count; i++) {
 620                 (*new_la)[i].luid.high = old_la[i].luid.high;
 621                 (*new_la)[i].luid.low = old_la[i].luid.low;
 622                 (*new_la)[i].attr = old_la[i].attr;
 623         }
 624
 625         return NT_STATUS_OK;
 626 }
 627
 628 /****************************************************************************
 629  Does the user have the specified privilege ?  We only deal with one privilege
 630  at a time here.
 631 *****************************************************************************/
 632
 633 BOOL user_has_privileges(NT_USER_TOKEN *token, SE_PRIV *privilege)
 634 {
 635         if ( !token )
 636                 return False;
 637
 638         return is_privilege_assigned( &token->privileges, privilege );
 639 }
 640
 641 /****************************************************************************
 642  Convert a LUID to a named string
 643 ****************************************************************************/
 644
 645 char* luid_to_privilege_name(const LUID *set)
 646 {
 647         static fstring name;
 648         int max = count_all_privileges();
 649
 650         if (set->high != 0)
 651                 return NULL;
 652
 653         if ( set->low > max )
 654                 return NULL;
 655
 656         fstrcpy( name, privs[set->low - 1].name );
 657
 658         return name;
 659 }
 660
 661 /****************************************************************************
 662  Convert an LUID to a 32-bit mask
 663 ****************************************************************************/
 664
 665 SE_PRIV* luid_to_privilege_mask(const LUID *set)
 666 {
 667         static SE_PRIV mask;
 668         int max = count_all_privileges();
 669
 670         if (set->high != 0)
 671                 return NULL;
 672
 673         if ( set->low > max )
 674                 return NULL;
 675
 676         se_priv_copy( &mask, &privs[set->low - 1].se_priv );
 677
 678         return &mask;
 679 }
 680
 681 /*******************************************************************
 682  return the number of elements in the privlege array
 683 *******************************************************************/
 684
 685 int count_all_privileges( void )
 686 {
 687         static int count;
 688
 689         if ( count )
 690                 return count;
 691
 692         /* loop over the array and count it */
 693         for ( count=0; !se_priv_equal(&privs[count].se_priv, &se_priv_end); count++ ) ;
 694
 695         return count;
 696 }
 697
 698 /*******************************************************************
 699 *******************************************************************/
 700
 701 BOOL se_priv_to_privilege_set( PRIVILEGE_SET *set, SE_PRIV *mask )
 702 {
 703         int i;
 704         uint32 num_privs = count_all_privileges();
 705         LUID_ATTR luid;
 706
 707         luid.attr = 0;
 708         luid.luid.high = 0;
 709
 710         for ( i=0; i<num_privs; i++ ) {
 711                 if ( !is_privilege_assigned(mask, &privs[i].se_priv) )
 712                         continue;
 713
 714                 luid.luid.low = GENERATE_LUID_LOW(i);
 715
 716                 if ( !privilege_set_add( set, luid ) )
 717                         return False;
 718         }
 719
 720         return True;
 721 }
 722
 723 /*******************************************************************
 724 *******************************************************************/
 725
 726 BOOL privilege_set_to_se_priv( SE_PRIV *mask, PRIVILEGE_SET *privset )
 727 {
 728         int i;
 729         uint32 num_privs = count_all_privileges();
 730
 731         ZERO_STRUCTP( mask );
 732
 733         for ( i=0; i<privset->count; i++ ) {
 734                 SE_PRIV r;
 735
 736                 /* sanity check for invalid privilege.  we really
 737                    only care about the low 32 bits */
 738
 739                 if ( privset->set[i].luid.high != 0 )
 740                         return False;
 741
 742                 /* make sure :LUID.low is in range */
 743                 if ( privset->set[i].luid.low == 0 || privset->set[i].luid.low > num_privs )
 744                         return False;
 745
 746                 r = privs[privset->set[i].luid.low - 1].se_priv;
 747                 se_priv_add( mask, &r );
 748         }
 749
 750         return True;
 751 }
 752
 753 /*******************************************************************
 754 *******************************************************************/
 755
 756 BOOL is_privileged_sid( DOM_SID *sid )
 757 {
 758         SE_PRIV mask;
 759
 760         return get_privileges( sid, &mask );
 761 }