source3/registry/reg_db.c

   1 /*
   2  *  Unix SMB/CIFS implementation.
   3  *  Virtual Windows Registry Layer
   4  *  Copyright (C) Gerald Carter                     2002-2005
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 3 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19  */
  20
  21 /* Implementation of internal registry database functions. */
  22
  23 #include "includes.h"
  24
  25 #undef DBGC_CLASS
  26 #define DBGC_CLASS DBGC_RPC_SRV
  27
  28 static struct tdb_wrap *tdb_reg = NULL;
  29 static int tdb_refcount;
  30
  31 /* List the deepest path into the registry.  All part components will be created.*/
  32
  33 /* If you want to have a part of the path controlled by the tdb and part by
  34    a virtual registry db (e.g. printing), then you have to list the deepest path.
  35    For example,"HKLM/SOFTWARE/Microsoft/Windows NT/CurrentVersion/Print"
  36    allows the reg_db backend to handle everything up to
  37    "HKLM/SOFTWARE/Microsoft/Windows NT/CurrentVersion" and then we'll hook
  38    the reg_printing backend onto the last component of the path (see
  39    KEY_PRINTING_2K in include/rpc_reg.h)   --jerry */
  40
  41 static const char *builtin_registry_paths[] = {
  42         KEY_PRINTING_2K,
  43         KEY_PRINTING_PORTS,
  44         KEY_PRINTING,
  45         KEY_SHARES,
  46         KEY_EVENTLOG,
  47         KEY_SMBCONF,
  48         "HKLM\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Perflib",
  49         "HKLM\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Perflib\\009",
  50         "HKLM\\SYSTEM\\CurrentControlSet\\Control\\Print\\Monitors",
  51         "HKLM\\SYSTEM\\CurrentControlSet\\Control\\ProductOptions",
  52         "HKLM\\SYSTEM\\CurrentControlSet\\Control\\Terminal Server\\DefaultUserConfiguration",
  53         "HKLM\\SYSTEM\\CurrentControlSet\\Services\\TcpIp\\Parameters",
  54         "HKLM\\SYSTEM\\CurrentControlSet\\Services\\Netlogon\\Parameters",
  55         "HKU",
  56         "HKCR",
  57         "HKPD",
  58         "HKPT",
  59          NULL };
  60
  61 struct builtin_regkey_value {
  62         const char *path;
  63         const char *valuename;
  64         uint32 type;
  65         union {
  66                 const char *string;
  67                 uint32 dw_value;
  68         } data;
  69 };
  70
  71 static struct builtin_regkey_value builtin_registry_values[] = {
  72         { KEY_PRINTING_PORTS,
  73                 SAMBA_PRINTER_PORT_NAME, REG_SZ, { "" } },
  74         { KEY_PRINTING_2K,
  75                 "DefaultSpoolDirectory", REG_SZ, { "C:\\Windows\\System32\\Spool\\Printers" } },
  76         { KEY_EVENTLOG,
  77                 "DisplayName", REG_SZ, { "Event Log" } },
  78         { KEY_EVENTLOG,
  79                 "ErrorControl", REG_DWORD, { (char*)0x00000001 } },
  80         { NULL, NULL, 0, { NULL } }
  81 };
  82
  83 /***********************************************************************
  84  Open the registry data in the tdb
  85  ***********************************************************************/
  86
  87 static BOOL init_registry_data( void )
  88 {
  89         pstring path, base, remaining;
  90         fstring keyname, subkeyname;
  91         REGSUBKEY_CTR *subkeys;
  92         REGVAL_CTR *values;
  93         int i;
  94         const char *p, *p2;
  95         UNISTR2 data;
  96
  97         /*
  98          * There are potentially quite a few store operations which are all
  99          * indiviually wrapped in tdb transactions. Wrapping them in a single
 100          * transaction gives just a single transaction_commit() to actually do
 101          * its fsync()s. See tdb/common/transaction.c for info about nested
 102          * transaction behaviour.
 103          */
 104
 105         if ( tdb_transaction_start( tdb_reg->tdb ) == -1 ) {
 106                 DEBUG(0, ("init_registry_data: tdb_transaction_start "
 107                           "failed\n"));
 108                 return False;
 109         }
 110
 111         /* loop over all of the predefined paths and add each component */
 112
 113         for ( i=0; builtin_registry_paths[i] != NULL; i++ ) {
 114
 115                 DEBUG(6,("init_registry_data: Adding [%s]\n", builtin_registry_paths[i]));
 116
 117                 pstrcpy( path, builtin_registry_paths[i] );
 118                 pstrcpy( base, "" );
 119                 p = path;
 120
 121                 while ( next_token(&p, keyname, "\\", sizeof(keyname)) ) {
 122
 123                         /* build up the registry path from the components */
 124
 125                         if ( *base )
 126                                 pstrcat( base, "\\" );
 127                         pstrcat( base, keyname );
 128
 129                         /* get the immediate subkeyname (if we have one ) */
 130
 131                         *subkeyname = '\0';
 132                         if ( *p ) {
 133                                 pstrcpy( remaining, p );
 134                                 p2 = remaining;
 135
 136                                 if ( !next_token(&p2, subkeyname, "\\", sizeof(subkeyname)) )
 137                                         fstrcpy( subkeyname, p2 );
 138                         }
 139
 140                         DEBUG(10,("init_registry_data: Storing key [%s] with subkey [%s]\n",
 141                                 base, *subkeyname ? subkeyname : "NULL"));
 142
 143                         /* we don't really care if the lookup succeeds or not since
 144                            we are about to update the record.  We just want any
 145                            subkeys already present */
 146
 147                         if ( !(subkeys = TALLOC_ZERO_P( NULL, REGSUBKEY_CTR )) ) {
 148                                 DEBUG(0,("talloc() failure!\n"));
 149                                 goto fail;
 150                         }
 151
 152                         regdb_fetch_keys( base, subkeys );
 153                         if ( *subkeyname )
 154                                 regsubkey_ctr_addkey( subkeys, subkeyname );
 155                         if ( !regdb_store_keys( base, subkeys ))
 156                                 goto fail;
 157
 158                         TALLOC_FREE( subkeys );
 159                 }
 160         }
 161
 162         /* loop over all of the predefined values and add each component */
 163
 164         for ( i=0; builtin_registry_values[i].path != NULL; i++ ) {
 165                 if ( !(values = TALLOC_ZERO_P( NULL, REGVAL_CTR )) ) {
 166                         DEBUG(0,("talloc() failure!\n"));
 167                         goto fail;
 168                 }
 169
 170                 regdb_fetch_values( builtin_registry_values[i].path, values );
 171
 172                 /* preserve existing values across restarts.  Only add new ones */
 173
 174                 if ( !regval_ctr_key_exists( values, builtin_registry_values[i].valuename ) )
 175                 {
 176                         switch( builtin_registry_values[i].type ) {
 177                         case REG_DWORD:
 178                                 regval_ctr_addvalue( values,
 179                                                      builtin_registry_values[i].valuename,
 180                                                      REG_DWORD,
 181                                                      (char*)&builtin_registry_values[i].data.dw_value,
 182                                                      sizeof(uint32) );
 183                                 break;
 184
 185                         case REG_SZ:
 186                                 init_unistr2( &data, builtin_registry_values[i].data.string, UNI_STR_TERMINATE);
 187                                 regval_ctr_addvalue( values,
 188                                                      builtin_registry_values[i].valuename,
 189                                                      REG_SZ,
 190                                                      (char*)data.buffer,
 191                                                      data.uni_str_len*sizeof(uint16) );
 192                                 break;
 193
 194                         default:
 195                                 DEBUG(0,("init_registry_data: invalid value type in builtin_registry_values [%d]\n",
 196                                         builtin_registry_values[i].type));
 197                         }
 198                         regdb_store_values( builtin_registry_values[i].path, values );
 199                 }
 200
 201                 TALLOC_FREE( values );
 202         }
 203
 204         if (tdb_transaction_commit( tdb_reg->tdb ) == -1) {
 205                 DEBUG(0, ("init_registry_data: Could not commit "
 206                           "transaction\n"));
 207                 return False;
 208         }
 209
 210         return True;
 211
 212  fail:
 213
 214         if (tdb_transaction_cancel( tdb_reg->tdb ) == -1) {
 215                 smb_panic("init_registry_data: tdb_transaction_cancel "
 216                           "failed\n");
 217         }
 218
 219         return False;
 220 }
 221
 222 /***********************************************************************
 223  Open the registry database
 224  ***********************************************************************/
 225
 226 BOOL regdb_init( void )
 227 {
 228         const char *vstring = "INFO/version";
 229         uint32 vers_id;
 230
 231         if ( tdb_reg )
 232                 return True;
 233
 234         if ( !(tdb_reg = tdb_wrap_open(NULL, lock_path("registry.tdb"), 0, REG_TDB_FLAGS, O_RDWR, 0600)) )
 235         {
 236                 tdb_reg = tdb_wrap_open(NULL, lock_path("registry.tdb"), 0, REG_TDB_FLAGS, O_RDWR|O_CREAT, 0600);
 237                 if ( !tdb_reg ) {
 238                         DEBUG(0,("regdb_init: Failed to open registry %s (%s)\n",
 239                                 lock_path("registry.tdb"), strerror(errno) ));
 240                         return False;
 241                 }
 242
 243                 DEBUG(10,("regdb_init: Successfully created registry tdb\n"));
 244         }
 245
 246         tdb_refcount = 1;
 247
 248         vers_id = tdb_fetch_int32(tdb_reg->tdb, vstring);
 249
 250         if ( vers_id != REGVER_V1 ) {
 251                 /* any upgrade code here if needed */
 252                 DEBUG(10, ("regdb_init: got INFO/version = %d != %d\n",
 253                            vers_id, REGVER_V1));
 254         }
 255
 256         /* always setup the necessary keys and values */
 257
 258         if ( !init_registry_data() ) {
 259                 DEBUG(0,("init_registry: Failed to initialize data in registry!\n"));
 260                 return False;
 261         }
 262
 263         return True;
 264 }
 265
 266 /***********************************************************************
 267  Open the registry.  Must already have been initialized by regdb_init()
 268  ***********************************************************************/
 269
 270 WERROR regdb_open( void )
 271 {
 272         WERROR result = WERR_OK;
 273
 274         if ( tdb_reg ) {
 275                 DEBUG(10,("regdb_open: incrementing refcount (%d)\n", tdb_refcount));
 276                 tdb_refcount++;
 277                 return WERR_OK;
 278         }
 279
 280         become_root();
 281
 282         tdb_reg = tdb_wrap_open(NULL, lock_path("registry.tdb"), 0, REG_TDB_FLAGS, O_RDWR, 0600);
 283         if ( !tdb_reg ) {
 284                 result = ntstatus_to_werror( map_nt_error_from_unix( errno ) );
 285                 DEBUG(0,("regdb_open: Failed to open %s! (%s)\n",
 286                         lock_path("registry.tdb"), strerror(errno) ));
 287         }
 288
 289         unbecome_root();
 290
 291         tdb_refcount = 1;
 292         DEBUG(10,("regdb_open: refcount reset (%d)\n", tdb_refcount));
 293
 294         return result;
 295 }
 296
 297 /***********************************************************************
 298  ***********************************************************************/
 299
 300 int regdb_close( void )
 301 {
 302         tdb_refcount--;
 303
 304         DEBUG(10,("regdb_close: decrementing refcount (%d)\n", tdb_refcount));
 305
 306         if ( tdb_refcount > 0 )
 307                 return 0;
 308
 309         SMB_ASSERT( tdb_refcount >= 0 );
 310
 311         TALLOC_FREE(tdb_reg);
 312         return 0;
 313 }
 314
 315 /***********************************************************************
 316  return the tdb sequence number of the registry tdb.
 317  this is an indicator for the content of the registry
 318  having changed. it will change upon regdb_init, too, though.
 319  ***********************************************************************/
 320 int regdb_get_seqnum(void)
 321 {
 322         return tdb_get_seqnum(tdb_reg->tdb);
 323 }
 324
 325 /***********************************************************************
 326  Add subkey strings to the registry tdb under a defined key
 327  fmt is the same format as tdb_pack except this function only supports
 328  fstrings
 329  ***********************************************************************/
 330
 331 static BOOL regdb_store_keys_internal( const char *key, REGSUBKEY_CTR *ctr )
 332 {
 333         TDB_DATA dbuf;
 334         uint8 *buffer;
 335         int i = 0;
 336         uint32 len, buflen;
 337         BOOL ret = True;
 338         uint32 num_subkeys = regsubkey_ctr_numkeys( ctr );
 339         pstring keyname;
 340
 341         if ( !key )
 342                 return False;
 343
 344         pstrcpy( keyname, key );
 345         normalize_reg_path( keyname );
 346
 347         /* allocate some initial memory */
 348
 349         if (!(buffer = (uint8 *)SMB_MALLOC(sizeof(pstring)))) {
 350                 return False;
 351         }
 352         buflen = sizeof(pstring);
 353         len = 0;
 354
 355         /* store the number of subkeys */
 356
 357         len += tdb_pack(buffer+len, buflen-len, "d", num_subkeys );
 358
 359         /* pack all the strings */
 360
 361         for (i=0; i<num_subkeys; i++) {
 362                 len += tdb_pack( buffer+len, buflen-len, "f", regsubkey_ctr_specific_key(ctr, i) );
 363                 if ( len > buflen ) {
 364                         /* allocate some extra space */
 365                         if ((buffer = (uint8 *)SMB_REALLOC( buffer, len*2 )) == NULL) {
 366                                 DEBUG(0,("regdb_store_keys: Failed to realloc memory of size [%d]\n", len*2));
 367                                 ret = False;
 368                                 goto done;
 369                         }
 370                         buflen = len*2;
 371
 372                         len = tdb_pack( buffer+len, buflen-len, "f", regsubkey_ctr_specific_key(ctr, i) );
 373                 }
 374         }
 375
 376         /* finally write out the data */
 377
 378         dbuf.dptr = buffer;
 379         dbuf.dsize = len;
 380         if ( tdb_store_bystring( tdb_reg->tdb, keyname, dbuf, TDB_REPLACE ) == -1) {
 381                 ret = False;
 382                 goto done;
 383         }
 384
 385 done:
 386         SAFE_FREE( buffer );
 387
 388         return ret;
 389 }
 390
 391 /***********************************************************************
 392  Store the new subkey record and create any child key records that
 393  do not currently exist
 394  ***********************************************************************/
 395
 396 BOOL regdb_store_keys( const char *key, REGSUBKEY_CTR *ctr )
 397 {
 398         int num_subkeys, i;
 399         pstring path;
 400         REGSUBKEY_CTR *subkeys = NULL, *old_subkeys = NULL;
 401         char *oldkeyname;
 402
 403         if ( tdb_transaction_start( tdb_reg->tdb ) == -1 ) {
 404                 DEBUG(0, ("regdb_store_keys: tdb_transaction_start failed\n"));
 405                 return False;
 406         }
 407
 408         /* fetch a list of the old subkeys so we can determine if any were
 409          * deleted */
 410
 411         if ( !(old_subkeys = TALLOC_ZERO_P( ctr, REGSUBKEY_CTR )) ) {
 412                 DEBUG(0,("regdb_store_keys: talloc() failure!\n"));
 413                 goto fail;
 414         }
 415
 416         regdb_fetch_keys( key, old_subkeys );
 417
 418         /* store the subkey list for the parent */
 419
 420         if ( !regdb_store_keys_internal( key, ctr ) ) {
 421                 DEBUG(0,("regdb_store_keys: Failed to store new subkey list "
 422                          "for parent [%s]\n", key ));
 423                 goto fail;
 424         }
 425
 426         /* now delete removed keys */
 427
 428         num_subkeys = regsubkey_ctr_numkeys( old_subkeys );
 429         for ( i=0; i<num_subkeys; i++ ) {
 430                 oldkeyname = regsubkey_ctr_specific_key( old_subkeys, i );
 431
 432                 if ( regsubkey_ctr_key_exists( ctr, oldkeyname ) ) {
 433                         /*
 434                          * It's still around, don't delete
 435                          */
 436
 437                         continue;
 438                 }
 439
 440                 pstr_sprintf( path, "%s/%s", key, oldkeyname );
 441                 normalize_reg_path( path );
 442                 if (tdb_delete_bystring( tdb_reg->tdb, path ) == -1) {
 443                         DEBUG(1, ("Deleting %s failed\n", path));
 444                         goto fail;
 445                 }
 446
 447                 pstr_sprintf( path, "%s/%s/%s", REG_VALUE_PREFIX, key,
 448                               oldkeyname );
 449                 normalize_reg_path( path );
 450
 451                 /*
 452                  * Ignore errors here, we might have no values around
 453                  */
 454                 tdb_delete_bystring( tdb_reg->tdb, path );
 455         }
 456
 457         TALLOC_FREE( old_subkeys );
 458
 459         /* now create records for any subkeys that don't already exist */
 460
 461         num_subkeys = regsubkey_ctr_numkeys( ctr );
 462         for ( i=0; i<num_subkeys; i++ ) {
 463                 pstr_sprintf( path, "%s/%s", key,
 464                               regsubkey_ctr_specific_key( ctr, i ) );
 465
 466                 if ( !(subkeys = TALLOC_ZERO_P( ctr, REGSUBKEY_CTR )) ) {
 467                         DEBUG(0,("regdb_store_keys: talloc() failure!\n"));
 468                         goto fail;
 469                 }
 470
 471                 if ( regdb_fetch_keys( path, subkeys ) == -1 ) {
 472                         /* create a record with 0 subkeys */
 473                         if ( !regdb_store_keys_internal( path, subkeys ) ) {
 474                                 DEBUG(0,("regdb_store_keys: Failed to store "
 475                                          "new record for key [%s]\n", path ));
 476                                 goto fail;
 477                         }
 478                 }
 479
 480                 TALLOC_FREE( subkeys );
 481         }
 482
 483         if (tdb_transaction_commit( tdb_reg->tdb ) == -1) {
 484                 DEBUG(0, ("regdb_store_keys: Could not commit transaction\n"));
 485                 return False;
 486         }
 487
 488         return True;
 489
 490  fail:
 491         TALLOC_FREE( old_subkeys );
 492         TALLOC_FREE( subkeys );
 493
 494         if (tdb_transaction_cancel( tdb_reg->tdb ) == -1) {
 495                 smb_panic("regdb_store_keys: tdb_transaction_cancel failed\n");
 496         }
 497
 498         return False;
 499 }
 500
 501
 502 /***********************************************************************
 503  Retrieve an array of strings containing subkeys.  Memory should be
 504  released by the caller.
 505  ***********************************************************************/
 506
 507 int regdb_fetch_keys( const char* key, REGSUBKEY_CTR *ctr )
 508 {
 509         pstring path;
 510         uint32 num_items;
 511         TDB_DATA dbuf;
 512         uint8 *buf;
 513         uint32 buflen, len;
 514         int i;
 515         fstring subkeyname;
 516
 517         DEBUG(11,("regdb_fetch_keys: Enter key => [%s]\n", key ? key : "NULL"));
 518
 519         pstrcpy( path, key );
 520
 521         /* convert to key format */
 522         pstring_sub( path, "\\", "/" );
 523         strupper_m( path );
 524
 525         dbuf = tdb_fetch_bystring( tdb_reg->tdb, path );
 526
 527         buf = dbuf.dptr;
 528         buflen = dbuf.dsize;
 529
 530         if ( !buf ) {
 531                 DEBUG(5,("regdb_fetch_keys: tdb lookup failed to locate key [%s]\n", key));
 532                 return -1;
 533         }
 534
 535         len = tdb_unpack( buf, buflen, "d", &num_items);
 536
 537         for (i=0; i<num_items; i++) {
 538                 len += tdb_unpack( buf+len, buflen-len, "f", subkeyname );
 539                 regsubkey_ctr_addkey( ctr, subkeyname );
 540         }
 541
 542         SAFE_FREE( dbuf.dptr );
 543
 544         DEBUG(11,("regdb_fetch_keys: Exit [%d] items\n", num_items));
 545
 546         return num_items;
 547 }
 548
 549 /****************************************************************************
 550  Unpack a list of registry values frem the TDB
 551  ***************************************************************************/
 552
 553 static int regdb_unpack_values(REGVAL_CTR *values, uint8 *buf, int buflen)
 554 {
 555         int             len = 0;
 556         uint32          type;
 557         pstring         valuename;
 558         uint32          size;
 559         uint8           *data_p;
 560         uint32          num_values = 0;
 561         int             i;
 562
 563
 564
 565         /* loop and unpack the rest of the registry values */
 566
 567         len += tdb_unpack(buf+len, buflen-len, "d", &num_values);
 568
 569         for ( i=0; i<num_values; i++ ) {
 570                 /* unpack the next regval */
 571
 572                 type = REG_NONE;
 573                 size = 0;
 574                 data_p = NULL;
 575                 len += tdb_unpack(buf+len, buflen-len, "fdB",
 576                                   valuename,
 577                                   &type,
 578                                   &size,
 579                                   &data_p);
 580
 581                 /* add the new value. Paranoid protective code -- make sure data_p is valid */
 582
 583                 if ( size && data_p ) {
 584                         regval_ctr_addvalue( values, valuename, type, (const char *)data_p, size );
 585                         SAFE_FREE(data_p); /* 'B' option to tdb_unpack does a malloc() */
 586                 }
 587
 588                 DEBUG(8,("specific: [%s], len: %d\n", valuename, size));
 589         }
 590
 591         return len;
 592 }
 593
 594 /****************************************************************************
 595  Pack all values in all printer keys
 596  ***************************************************************************/
 597
 598 static int regdb_pack_values(REGVAL_CTR *values, uint8 *buf, int buflen)
 599 {
 600         int             len = 0;
 601         int             i;
 602         REGISTRY_VALUE  *val;
 603         int             num_values;
 604
 605         if ( !values )
 606                 return 0;
 607
 608         num_values = regval_ctr_numvals( values );
 609
 610         /* pack the number of values first */
 611
 612         len += tdb_pack( buf+len, buflen-len, "d", num_values );
 613
 614         /* loop over all values */
 615
 616         for ( i=0; i<num_values; i++ ) {
 617                 val = regval_ctr_specific_value( values, i );
 618                 len += tdb_pack(buf+len, buflen-len, "fdB",
 619                                 regval_name(val),
 620                                 regval_type(val),
 621                                 regval_size(val),
 622                                 regval_data_p(val) );
 623         }
 624
 625         return len;
 626 }
 627
 628 /***********************************************************************
 629  Retrieve an array of strings containing subkeys.  Memory should be
 630  released by the caller.
 631  ***********************************************************************/
 632
 633 int regdb_fetch_values( const char* key, REGVAL_CTR *values )
 634 {
 635         TDB_DATA data;
 636         pstring keystr;
 637
 638         DEBUG(10,("regdb_fetch_values: Looking for value of key [%s] \n", key));
 639
 640         pstr_sprintf( keystr, "%s/%s", REG_VALUE_PREFIX, key );
 641         normalize_reg_path( keystr );
 642
 643         data = tdb_fetch_bystring( tdb_reg->tdb, keystr );
 644
 645         if ( !data.dptr ) {
 646                 /* all keys have zero values by default */
 647                 return 0;
 648         }
 649
 650         regdb_unpack_values( values, data.dptr, data.dsize );
 651
 652         SAFE_FREE( data.dptr );
 653
 654         return regval_ctr_numvals(values);
 655 }
 656
 657 /***********************************************************************
 658  Stub function since we do not currently support storing registry
 659  values in the registry.tdb
 660  ***********************************************************************/
 661
 662 BOOL regdb_store_values( const char *key, REGVAL_CTR *values )
 663 {
 664         TDB_DATA data;
 665         pstring keystr;
 666         int len, ret;
 667
 668         DEBUG(10,("regdb_store_values: Looking for value of key [%s] \n", key));
 669
 670         ZERO_STRUCT( data );
 671
 672         len = regdb_pack_values( values, data.dptr, data.dsize );
 673         if ( len <= 0 ) {
 674                 DEBUG(0,("regdb_store_values: unable to pack values. len <= 0\n"));
 675                 return False;
 676         }
 677
 678         data.dptr = SMB_MALLOC_ARRAY( uint8, len );
 679         data.dsize = len;
 680
 681         len = regdb_pack_values( values, data.dptr, data.dsize );
 682
 683         SMB_ASSERT( len == data.dsize );
 684
 685         pstr_sprintf( keystr, "%s/%s", REG_VALUE_PREFIX, key );
 686         normalize_reg_path( keystr );
 687
 688         ret = tdb_trans_store_bystring(tdb_reg->tdb, keystr, data, TDB_REPLACE);
 689
 690         SAFE_FREE( data.dptr );
 691
 692         return ret != -1 ;
 693 }
 694
 695 static WERROR regdb_get_secdesc(TALLOC_CTX *mem_ctx, const char *key,
 696                                 struct security_descriptor **psecdesc)
 697 {
 698         char *tdbkey;
 699         TDB_DATA data;
 700         NTSTATUS status;
 701
 702         DEBUG(10, ("regdb_get_secdesc: Getting secdesc of key [%s]\n", key));
 703
 704         if (asprintf(&tdbkey, "%s/%s", REG_SECDESC_PREFIX, key) == -1) {
 705                 return WERR_NOMEM;
 706         }
 707         normalize_dbkey(tdbkey);
 708
 709         data = tdb_fetch_bystring(tdb_reg->tdb, tdbkey);
 710         SAFE_FREE(tdbkey);
 711
 712         if (data.dptr == NULL) {
 713                 return WERR_BADFILE;
 714         }
 715
 716         status = unmarshall_sec_desc(mem_ctx, (uint8 *)data.dptr, data.dsize,
 717                                      psecdesc);
 718
 719         SAFE_FREE(data.dptr);
 720
 721         if (NT_STATUS_EQUAL(status, NT_STATUS_NO_MEMORY)) {
 722                 return WERR_NOMEM;
 723         }
 724
 725         if (!NT_STATUS_IS_OK(status)) {
 726                 return WERR_REG_CORRUPT;
 727         }
 728
 729         return WERR_OK;
 730 }
 731
 732 static WERROR regdb_set_secdesc(const char *key,
 733                                 struct security_descriptor *secdesc)
 734 {
 735         prs_struct ps;
 736         TALLOC_CTX *mem_ctx;
 737         char *tdbkey;
 738         WERROR err = WERR_NOMEM;
 739         TDB_DATA tdbdata;
 740
 741         if (!(mem_ctx = talloc_init("regdb_set_secdesc"))) {
 742                 return WERR_NOMEM;
 743         }
 744
 745         ZERO_STRUCT(ps);
 746
 747         if (!(tdbkey = talloc_asprintf(mem_ctx, "%s/%s", REG_SECDESC_PREFIX,
 748                                        key))) {
 749                 goto done;
 750         }
 751         normalize_dbkey(tdbkey);
 752
 753         err = ntstatus_to_werror(marshall_sec_desc(mem_ctx, secdesc,
 754                                                    &tdbdata.dptr,
 755                                                    &tdbdata.dsize));
 756         if (!W_ERROR_IS_OK(err)) {
 757                 goto done;
 758         }
 759
 760         if (tdb_trans_store_bystring(tdb_reg->tdb, tdbkey, tdbdata, 0) == -1) {
 761                 err = ntstatus_to_werror(map_nt_error_from_unix(errno));
 762                 goto done;
 763         }
 764
 765  done:
 766         prs_mem_free(&ps);
 767         TALLOC_FREE(mem_ctx);
 768         return err;
 769 }
 770
 771 /*
 772  * Table of function pointers for default access
 773  */
 774
 775 REGISTRY_OPS regdb_ops = {
 776         regdb_fetch_keys,
 777         regdb_fetch_values,
 778         regdb_store_keys,
 779         regdb_store_values,
 780         NULL,
 781         regdb_get_secdesc,
 782         regdb_set_secdesc
 783 };