source/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 2 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 #define VALUE_PREFIX    "SAMBA_REGVAL"
  32 #define SECDESC_PREFIX  "SAMBA_SECDESC"
  33
  34 #define REG_TDB_FLAGS TDB_SEQNUM
  35
  36 /* List the deepest path into the registry.  All part components will be created.*/
  37
  38 /* If you want to have a part of the path controlled by the tdb and part by
  39    a virtual registry db (e.g. printing), then you have to list the deepest path.
  40    For example,"HKLM/SOFTWARE/Microsoft/Windows NT/CurrentVersion/Print"
  41    allows the reg_db backend to handle everything up to
  42    "HKLM/SOFTWARE/Microsoft/Windows NT/CurrentVersion" and then we'll hook
  43    the reg_printing backend onto the last component of the path (see
  44    KEY_PRINTING_2K in include/rpc_reg.h)   --jerry */
  45
  46 static const char *builtin_registry_paths[] = {
  47         KEY_PRINTING_2K,
  48         KEY_PRINTING_PORTS,
  49         KEY_PRINTING,
  50         KEY_SHARES,
  51         KEY_EVENTLOG,
  52         KEY_SMBCONF,
  53         "HKLM\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Perflib",
  54         "HKLM\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Perflib\\009",
  55         "HKLM\\SYSTEM\\CurrentControlSet\\Control\\Print\\Monitors",
  56         "HKLM\\SYSTEM\\CurrentControlSet\\Control\\ProductOptions",
  57         "HKLM\\SYSTEM\\CurrentControlSet\\Control\\Terminal Server\\DefaultUserConfiguration",
  58         "HKLM\\SYSTEM\\CurrentControlSet\\Services\\TcpIp\\Parameters",
  59         "HKLM\\SYSTEM\\CurrentControlSet\\Services\\Netlogon\\Parameters",
  60         "HKU",
  61         "HKCR",
  62         "HKPD",
  63         "HKPT",
  64          NULL };
  65
  66 struct builtin_regkey_value {
  67         const char *path;
  68         const char *valuename;
  69         uint32 type;
  70         union {
  71                 const char *string;
  72                 uint32 dw_value;
  73         } data;
  74 };
  75
  76 static struct builtin_regkey_value builtin_registry_values[] = {
  77         { KEY_PRINTING_PORTS,
  78                 SAMBA_PRINTER_PORT_NAME, REG_SZ, { "" } },
  79         { KEY_PRINTING_2K,
  80                 "DefaultSpoolDirectory", REG_SZ, { "C:\\Windows\\System32\\Spool\\Printers" } },
  81         { KEY_EVENTLOG,
  82                 "DisplayName", REG_SZ, { "Event Log" } },
  83         { KEY_EVENTLOG,
  84                 "ErrorControl", REG_DWORD, { (char*)0x00000001 } },
  85         { NULL, NULL, 0, { NULL } }
  86 };
  87
  88 #define REGVER_V1       1       /* first db version with write support */
  89
  90 /***********************************************************************
  91  Open the registry data in the tdb
  92  ***********************************************************************/
  93
  94 static BOOL init_registry_data( void )
  95 {
  96         pstring path, base, remaining;
  97         fstring keyname, subkeyname;
  98         REGSUBKEY_CTR *subkeys;
  99         REGVAL_CTR *values;
 100         int i;
 101         const char *p, *p2;
 102         UNISTR2 data;
 103
 104         /*
 105          * There are potentially quite a few store operations which are all
 106          * indiviually wrapped in tdb transactions. Wrapping them in a single
 107          * transaction gives just a single transaction_commit() to actually do
 108          * its fsync()s. See tdb/common/transaction.c for info about nested
 109          * transaction behaviour.
 110          */
 111
 112         if ( tdb_transaction_start( tdb_reg->tdb ) == -1 ) {
 113                 DEBUG(0, ("init_registry_data: tdb_transaction_start "
 114                           "failed\n"));
 115                 return False;
 116         }
 117
 118         /* loop over all of the predefined paths and add each component */
 119
 120         for ( i=0; builtin_registry_paths[i] != NULL; i++ ) {
 121
 122                 DEBUG(6,("init_registry_data: Adding [%s]\n", builtin_registry_paths[i]));
 123
 124                 pstrcpy( path, builtin_registry_paths[i] );
 125                 pstrcpy( base, "" );
 126                 p = path;
 127
 128                 while ( next_token(&p, keyname, "\\", sizeof(keyname)) ) {
 129
 130                         /* build up the registry path from the components */
 131
 132                         if ( *base )
 133                                 pstrcat( base, "\\" );
 134                         pstrcat( base, keyname );
 135
 136                         /* get the immediate subkeyname (if we have one ) */
 137
 138                         *subkeyname = '\0';
 139                         if ( *p ) {
 140                                 pstrcpy( remaining, p );
 141                                 p2 = remaining;
 142
 143                                 if ( !next_token(&p2, subkeyname, "\\", sizeof(subkeyname)) )
 144                                         fstrcpy( subkeyname, p2 );
 145                         }
 146
 147                         DEBUG(10,("init_registry_data: Storing key [%s] with subkey [%s]\n",
 148                                 base, *subkeyname ? subkeyname : "NULL"));
 149
 150                         /* we don't really care if the lookup succeeds or not since
 151                            we are about to update the record.  We just want any
 152                            subkeys already present */
 153
 154                         if ( !(subkeys = TALLOC_ZERO_P( NULL, REGSUBKEY_CTR )) ) {
 155                                 DEBUG(0,("talloc() failure!\n"));
 156                                 goto fail;
 157                         }
 158
 159                         regdb_fetch_keys( base, subkeys );
 160                         if ( *subkeyname )
 161                                 regsubkey_ctr_addkey( subkeys, subkeyname );
 162                         if ( !regdb_store_keys( base, subkeys ))
 163                                 goto fail;
 164
 165                         TALLOC_FREE( subkeys );
 166                 }
 167         }
 168
 169         /* loop over all of the predefined values and add each component */
 170
 171         for ( i=0; builtin_registry_values[i].path != NULL; i++ ) {
 172                 if ( !(values = TALLOC_ZERO_P( NULL, REGVAL_CTR )) ) {
 173                         DEBUG(0,("talloc() failure!\n"));
 174                         goto fail;
 175                 }
 176
 177                 regdb_fetch_values( builtin_registry_values[i].path, values );
 178
 179                 /* preserve existing values across restarts.  Only add new ones */
 180
 181                 if ( !regval_ctr_key_exists( values, builtin_registry_values[i].valuename ) )
 182                 {
 183                         switch( builtin_registry_values[i].type ) {
 184                         case REG_DWORD:
 185                                 regval_ctr_addvalue( values,
 186                                                      builtin_registry_values[i].valuename,
 187                                                      REG_DWORD,
 188                                                      (char*)&builtin_registry_values[i].data.dw_value,
 189                                                      sizeof(uint32) );
 190                                 break;
 191
 192                         case REG_SZ:
 193                                 init_unistr2( &data, builtin_registry_values[i].data.string, UNI_STR_TERMINATE);
 194                                 regval_ctr_addvalue( values,
 195                                                      builtin_registry_values[i].valuename,
 196                                                      REG_SZ,
 197                                                      (char*)data.buffer,
 198                                                      data.uni_str_len*sizeof(uint16) );
 199                                 break;
 200
 201                         default:
 202                                 DEBUG(0,("init_registry_data: invalid value type in builtin_registry_values [%d]\n",
 203                                         builtin_registry_values[i].type));
 204                         }
 205                         regdb_store_values( builtin_registry_values[i].path, values );
 206                 }
 207
 208                 TALLOC_FREE( values );
 209         }
 210
 211         if (tdb_transaction_commit( tdb_reg->tdb ) == -1) {
 212                 DEBUG(0, ("init_registry_data: Could not commit "
 213                           "transaction\n"));
 214                 return False;
 215         }
 216
 217         return True;
 218
 219  fail:
 220
 221         if (tdb_transaction_cancel( tdb_reg->tdb ) == -1) {
 222                 smb_panic("init_registry_data: tdb_transaction_cancel "
 223                           "failed\n");
 224         }
 225
 226         return False;
 227 }
 228
 229 /***********************************************************************
 230  Open the registry database
 231  ***********************************************************************/
 232
 233 BOOL regdb_init( void )
 234 {
 235         const char *vstring = "INFO/version";
 236         uint32 vers_id;
 237
 238         if ( tdb_reg )
 239                 return True;
 240
 241         if ( !(tdb_reg = tdb_wrap_open(NULL, lock_path("registry.tdb"), 0, REG_TDB_FLAGS, O_RDWR, 0600)) )
 242         {
 243                 tdb_reg = tdb_wrap_open(NULL, lock_path("registry.tdb"), 0, REG_TDB_FLAGS, O_RDWR|O_CREAT, 0600);
 244                 if ( !tdb_reg ) {
 245                         DEBUG(0,("regdb_init: Failed to open registry %s (%s)\n",
 246                                 lock_path("registry.tdb"), strerror(errno) ));
 247                         return False;
 248                 }
 249
 250                 DEBUG(10,("regdb_init: Successfully created registry tdb\n"));
 251         }
 252
 253         tdb_refcount = 1;
 254
 255         vers_id = tdb_fetch_int32(tdb_reg->tdb, vstring);
 256
 257         if ( vers_id != REGVER_V1 ) {
 258                 /* any upgrade code here if needed */
 259         }
 260
 261         /* always setup the necessary keys and values */
 262
 263         if ( !init_registry_data() ) {
 264                 DEBUG(0,("init_registry: Failed to initialize data in registry!\n"));
 265                 return False;
 266         }
 267
 268         return True;
 269 }
 270
 271 /***********************************************************************
 272  Open the registry.  Must already have been initialized by regdb_init()
 273  ***********************************************************************/
 274
 275 WERROR regdb_open( void )
 276 {
 277         WERROR result = WERR_OK;
 278
 279         if ( tdb_reg ) {
 280                 DEBUG(10,("regdb_open: incrementing refcount (%d)\n", tdb_refcount));
 281                 tdb_refcount++;
 282                 return WERR_OK;
 283         }
 284
 285         become_root();
 286
 287         tdb_reg = tdb_wrap_open(NULL, lock_path("registry.tdb"), 0, REG_TDB_FLAGS, O_RDWR, 0600);
 288         if ( !tdb_reg ) {
 289                 result = ntstatus_to_werror( map_nt_error_from_unix( errno ) );
 290                 DEBUG(0,("regdb_open: Failed to open %s! (%s)\n",
 291                         lock_path("registry.tdb"), strerror(errno) ));
 292         }
 293
 294         unbecome_root();
 295
 296         tdb_refcount = 1;
 297         DEBUG(10,("regdb_open: refcount reset (%d)\n", tdb_refcount));
 298
 299         return result;
 300 }
 301
 302 /***********************************************************************
 303  ***********************************************************************/
 304
 305 int regdb_close( void )
 306 {
 307         tdb_refcount--;
 308
 309         DEBUG(10,("regdb_close: decrementing refcount (%d)\n", tdb_refcount));
 310
 311         if ( tdb_refcount > 0 )
 312                 return 0;
 313
 314         SMB_ASSERT( tdb_refcount >= 0 );
 315
 316         TALLOC_FREE(tdb_reg);
 317         return 0;
 318 }
 319
 320 /***********************************************************************
 321  return the tdb sequence number of the registry tdb.
 322  this is an indicator for the content of the registry
 323  having changed. it will change upon regdb_init, too, though.
 324  ***********************************************************************/
 325 int regdb_get_seqnum(void)
 326 {
 327         return tdb_get_seqnum(tdb_reg->tdb);
 328 }
 329
 330 /***********************************************************************
 331  Add subkey strings to the registry tdb under a defined key
 332  fmt is the same format as tdb_pack except this function only supports
 333  fstrings
 334  ***********************************************************************/
 335
 336 static BOOL regdb_store_keys_internal( const char *key, REGSUBKEY_CTR *ctr )
 337 {
 338         TDB_DATA dbuf;
 339         uint8 *buffer;
 340         int i = 0;
 341         uint32 len, buflen;
 342         BOOL ret = True;
 343         uint32 num_subkeys = regsubkey_ctr_numkeys( ctr );
 344         pstring keyname;
 345
 346         if ( !key )
 347                 return False;
 348
 349         pstrcpy( keyname, key );
 350         normalize_reg_path( keyname );
 351
 352         /* allocate some initial memory */
 353
 354         if (!(buffer = (uint8 *)SMB_MALLOC(sizeof(pstring)))) {
 355                 return False;
 356         }
 357         buflen = sizeof(pstring);
 358         len = 0;
 359
 360         /* store the number of subkeys */
 361
 362         len += tdb_pack(buffer+len, buflen-len, "d", num_subkeys );
 363
 364         /* pack all the strings */
 365
 366         for (i=0; i<num_subkeys; i++) {
 367                 len += tdb_pack( buffer+len, buflen-len, "f", regsubkey_ctr_specific_key(ctr, i) );
 368                 if ( len > buflen ) {
 369                         /* allocate some extra space */
 370                         if ((buffer = (uint8 *)SMB_REALLOC( buffer, len*2 )) == NULL) {
 371                                 DEBUG(0,("regdb_store_keys: Failed to realloc memory of size [%d]\n", len*2));
 372                                 ret = False;
 373                                 goto done;
 374                         }
 375                         buflen = len*2;
 376
 377                         len = tdb_pack( buffer+len, buflen-len, "f", regsubkey_ctr_specific_key(ctr, i) );
 378                 }
 379         }
 380
 381         /* finally write out the data */
 382
 383         dbuf.dptr = buffer;
 384         dbuf.dsize = len;
 385         if ( tdb_store_bystring( tdb_reg->tdb, keyname, dbuf, TDB_REPLACE ) == -1) {
 386                 ret = False;
 387                 goto done;
 388         }
 389
 390 done:
 391         SAFE_FREE( buffer );
 392
 393         return ret;
 394 }
 395
 396 /***********************************************************************
 397  Store the new subkey record and create any child key records that
 398  do not currently exist
 399  ***********************************************************************/
 400
 401 BOOL regdb_store_keys( const char *key, REGSUBKEY_CTR *ctr )
 402 {
 403         int num_subkeys, i;
 404         pstring path;
 405         REGSUBKEY_CTR *subkeys = NULL, *old_subkeys = NULL;
 406         char *oldkeyname;
 407
 408         if ( tdb_transaction_start( tdb_reg->tdb ) == -1 ) {
 409                 DEBUG(0, ("regdb_store_keys: tdb_transaction_start failed\n"));
 410                 return False;
 411         }
 412
 413         /* fetch a list of the old subkeys so we can determine if any were
 414          * deleted */
 415
 416         if ( !(old_subkeys = TALLOC_ZERO_P( ctr, REGSUBKEY_CTR )) ) {
 417                 DEBUG(0,("regdb_store_keys: talloc() failure!\n"));
 418                 goto fail;
 419         }
 420
 421         regdb_fetch_keys( key, old_subkeys );
 422
 423         /* store the subkey list for the parent */
 424
 425         if ( !regdb_store_keys_internal( key, ctr ) ) {
 426                 DEBUG(0,("regdb_store_keys: Failed to store new subkey list "
 427                          "for parent [%s]\n", key ));
 428                 goto fail;
 429         }
 430
 431         /* now delete removed keys */
 432
 433         num_subkeys = regsubkey_ctr_numkeys( old_subkeys );
 434         for ( i=0; i<num_subkeys; i++ ) {
 435                 oldkeyname = regsubkey_ctr_specific_key( old_subkeys, i );
 436
 437                 if ( regsubkey_ctr_key_exists( ctr, oldkeyname ) ) {
 438                         /*
 439                          * It's still around, don't delete
 440                          */
 441
 442                         continue;
 443                 }
 444
 445                 pstr_sprintf( path, "%s/%s", key, oldkeyname );
 446                 normalize_reg_path( path );
 447                 if (tdb_delete_bystring( tdb_reg->tdb, path ) == -1) {
 448                         DEBUG(1, ("Deleting %s failed\n", path));
 449                         goto fail;
 450                 }
 451
 452                 pstr_sprintf( path, "%s/%s/%s", VALUE_PREFIX, key,
 453                               oldkeyname );
 454                 normalize_reg_path( path );
 455
 456                 /*
 457                  * Ignore errors here, we might have no values around
 458                  */
 459                 tdb_delete_bystring( tdb_reg->tdb, path );
 460         }
 461
 462         TALLOC_FREE( old_subkeys );
 463
 464         /* now create records for any subkeys that don't already exist */
 465
 466         num_subkeys = regsubkey_ctr_numkeys( ctr );
 467         for ( i=0; i<num_subkeys; i++ ) {
 468                 pstr_sprintf( path, "%s/%s", key,
 469                               regsubkey_ctr_specific_key( ctr, i ) );
 470
 471                 if ( !(subkeys = TALLOC_ZERO_P( ctr, REGSUBKEY_CTR )) ) {
 472                         DEBUG(0,("regdb_store_keys: talloc() failure!\n"));
 473                         goto fail;
 474                 }
 475
 476                 if ( regdb_fetch_keys( path, subkeys ) == -1 ) {
 477                         /* create a record with 0 subkeys */
 478                         if ( !regdb_store_keys_internal( path, subkeys ) ) {
 479                                 DEBUG(0,("regdb_store_keys: Failed to store "
 480                                          "new record for key [%s]\n", path ));
 481                                 goto fail;
 482                         }
 483                 }
 484
 485                 TALLOC_FREE( subkeys );
 486         }
 487
 488         if (tdb_transaction_commit( tdb_reg->tdb ) == -1) {
 489                 DEBUG(0, ("regdb_store_keys: Could not commit transaction\n"));
 490                 return False;
 491         }
 492
 493         return True;
 494
 495  fail:
 496         TALLOC_FREE( old_subkeys );
 497         TALLOC_FREE( subkeys );
 498
 499         if (tdb_transaction_cancel( tdb_reg->tdb ) == -1) {
 500                 smb_panic("regdb_store_keys: tdb_transaction_cancel failed\n");
 501         }
 502
 503         return False;
 504 }
 505
 506
 507 /***********************************************************************
 508  Retrieve an array of strings containing subkeys.  Memory should be
 509  released by the caller.
 510  ***********************************************************************/
 511
 512 int regdb_fetch_keys( const char* key, REGSUBKEY_CTR *ctr )
 513 {
 514         pstring path;
 515         uint32 num_items;
 516         TDB_DATA dbuf;
 517         uint8 *buf;
 518         uint32 buflen, len;
 519         int i;
 520         fstring subkeyname;
 521
 522         DEBUG(11,("regdb_fetch_keys: Enter key => [%s]\n", key ? key : "NULL"));
 523
 524         pstrcpy( path, key );
 525
 526         /* convert to key format */
 527         pstring_sub( path, "\\", "/" );
 528         strupper_m( path );
 529
 530         dbuf = tdb_fetch_bystring( tdb_reg->tdb, path );
 531
 532         buf = dbuf.dptr;
 533         buflen = dbuf.dsize;
 534
 535         if ( !buf ) {
 536                 DEBUG(5,("regdb_fetch_keys: tdb lookup failed to locate key [%s]\n", key));
 537                 return -1;
 538         }
 539
 540         len = tdb_unpack( buf, buflen, "d", &num_items);
 541
 542         for (i=0; i<num_items; i++) {
 543                 len += tdb_unpack( buf+len, buflen-len, "f", subkeyname );
 544                 regsubkey_ctr_addkey( ctr, subkeyname );
 545         }
 546
 547         SAFE_FREE( dbuf.dptr );
 548
 549         DEBUG(11,("regdb_fetch_keys: Exit [%d] items\n", num_items));
 550
 551         return num_items;
 552 }
 553
 554 /****************************************************************************
 555  Unpack a list of registry values frem the TDB
 556  ***************************************************************************/
 557
 558 static int regdb_unpack_values(REGVAL_CTR *values, uint8 *buf, int buflen)
 559 {
 560         int             len = 0;
 561         uint32          type;
 562         pstring         valuename;
 563         uint32          size;
 564         uint8           *data_p;
 565         uint32          num_values = 0;
 566         int             i;
 567
 568
 569
 570         /* loop and unpack the rest of the registry values */
 571
 572         len += tdb_unpack(buf+len, buflen-len, "d", &num_values);
 573
 574         for ( i=0; i<num_values; i++ ) {
 575                 /* unpack the next regval */
 576
 577                 type = REG_NONE;
 578                 size = 0;
 579                 data_p = NULL;
 580                 len += tdb_unpack(buf+len, buflen-len, "fdB",
 581                                   valuename,
 582                                   &type,
 583                                   &size,
 584                                   &data_p);
 585
 586                 /* add the new value. Paranoid protective code -- make sure data_p is valid */
 587
 588                 if ( size && data_p ) {
 589                         regval_ctr_addvalue( values, valuename, type, (const char *)data_p, size );
 590                         SAFE_FREE(data_p); /* 'B' option to tdb_unpack does a malloc() */
 591                 }
 592
 593                 DEBUG(8,("specific: [%s], len: %d\n", valuename, size));
 594         }
 595
 596         return len;
 597 }
 598
 599 /****************************************************************************
 600  Pack all values in all printer keys
 601  ***************************************************************************/
 602
 603 static int regdb_pack_values(REGVAL_CTR *values, uint8 *buf, int buflen)
 604 {
 605         int             len = 0;
 606         int             i;
 607         REGISTRY_VALUE  *val;
 608         int             num_values;
 609
 610         if ( !values )
 611                 return 0;
 612
 613         num_values = regval_ctr_numvals( values );
 614
 615         /* pack the number of values first */
 616
 617         len += tdb_pack( buf+len, buflen-len, "d", num_values );
 618
 619         /* loop over all values */
 620
 621         for ( i=0; i<num_values; i++ ) {
 622                 val = regval_ctr_specific_value( values, i );
 623                 len += tdb_pack(buf+len, buflen-len, "fdB",
 624                                 regval_name(val),
 625                                 regval_type(val),
 626                                 regval_size(val),
 627                                 regval_data_p(val) );
 628         }
 629
 630         return len;
 631 }
 632
 633 /***********************************************************************
 634  Retrieve an array of strings containing subkeys.  Memory should be
 635  released by the caller.
 636  ***********************************************************************/
 637
 638 int regdb_fetch_values( const char* key, REGVAL_CTR *values )
 639 {
 640         TDB_DATA data;
 641         pstring keystr;
 642
 643         DEBUG(10,("regdb_fetch_values: Looking for value of key [%s] \n", key));
 644
 645         pstr_sprintf( keystr, "%s/%s", VALUE_PREFIX, key );
 646         normalize_reg_path( keystr );
 647
 648         data = tdb_fetch_bystring( tdb_reg->tdb, keystr );
 649
 650         if ( !data.dptr ) {
 651                 /* all keys have zero values by default */
 652                 return 0;
 653         }
 654
 655         regdb_unpack_values( values, data.dptr, data.dsize );
 656
 657         SAFE_FREE( data.dptr );
 658
 659         return regval_ctr_numvals(values);
 660 }
 661
 662 /***********************************************************************
 663  Stub function since we do not currently support storing registry
 664  values in the registry.tdb
 665  ***********************************************************************/
 666
 667 BOOL regdb_store_values( const char *key, REGVAL_CTR *values )
 668 {
 669         TDB_DATA data;
 670         pstring keystr;
 671         int len, ret;
 672
 673         DEBUG(10,("regdb_store_values: Looking for value of key [%s] \n", key));
 674
 675         ZERO_STRUCT( data );
 676
 677         len = regdb_pack_values( values, data.dptr, data.dsize );
 678         if ( len <= 0 ) {
 679                 DEBUG(0,("regdb_store_values: unable to pack values. len <= 0\n"));
 680                 return False;
 681         }
 682
 683         data.dptr = SMB_MALLOC_ARRAY( uint8, len );
 684         data.dsize = len;
 685
 686         len = regdb_pack_values( values, data.dptr, data.dsize );
 687
 688         SMB_ASSERT( len == data.dsize );
 689
 690         pstr_sprintf( keystr, "%s/%s", VALUE_PREFIX, key );
 691         normalize_reg_path( keystr );
 692
 693         ret = tdb_trans_store_bystring(tdb_reg->tdb, keystr, data, TDB_REPLACE);
 694
 695         SAFE_FREE( data.dptr );
 696
 697         return ret != -1 ;
 698 }
 699
 700 static WERROR regdb_get_secdesc(TALLOC_CTX *mem_ctx, const char *key,
 701                                 struct security_descriptor **psecdesc)
 702 {
 703         char *tdbkey;
 704         TDB_DATA data;
 705         NTSTATUS status;
 706
 707         DEBUG(10, ("regdb_get_secdesc: Getting secdesc of key [%s]\n", key));
 708
 709         if (asprintf(&tdbkey, "%s/%s", SECDESC_PREFIX, key) == -1) {
 710                 return WERR_NOMEM;
 711         }
 712         normalize_dbkey(tdbkey);
 713
 714         data = tdb_fetch_bystring(tdb_reg->tdb, tdbkey);
 715         SAFE_FREE(tdbkey);
 716
 717         if (data.dptr == NULL) {
 718                 return WERR_BADFILE;
 719         }
 720
 721         status = unmarshall_sec_desc(mem_ctx, (uint8 *)data.dptr, data.dsize,
 722                                      psecdesc);
 723
 724         SAFE_FREE(data.dptr);
 725
 726         if (NT_STATUS_EQUAL(status, NT_STATUS_NO_MEMORY)) {
 727                 return WERR_NOMEM;
 728         }
 729
 730         if (!NT_STATUS_IS_OK(status)) {
 731                 return WERR_REG_CORRUPT;
 732         }
 733
 734         return WERR_OK;
 735 }
 736
 737 static WERROR regdb_set_secdesc(const char *key,
 738                                 struct security_descriptor *secdesc)
 739 {
 740         prs_struct ps;
 741         TALLOC_CTX *mem_ctx;
 742         char *tdbkey;
 743         WERROR err = WERR_NOMEM;
 744         TDB_DATA tdbdata;
 745
 746         if (!(mem_ctx = talloc_init("regdb_set_secdesc"))) {
 747                 return WERR_NOMEM;
 748         }
 749
 750         ZERO_STRUCT(ps);
 751
 752         if (!(tdbkey = talloc_asprintf(mem_ctx, "%s/%s", SECDESC_PREFIX,
 753                                        key))) {
 754                 goto done;
 755         }
 756         normalize_dbkey(tdbkey);
 757
 758         err = ntstatus_to_werror(marshall_sec_desc(mem_ctx, secdesc,
 759                                                    &tdbdata.dptr,
 760                                                    &tdbdata.dsize));
 761         if (!W_ERROR_IS_OK(err)) {
 762                 goto done;
 763         }
 764
 765         if (tdb_trans_store_bystring(tdb_reg->tdb, tdbkey, tdbdata, 0) == -1) {
 766                 err = ntstatus_to_werror(map_nt_error_from_unix(errno));
 767                 goto done;
 768         }
 769
 770  done:
 771         prs_mem_free(&ps);
 772         TALLOC_FREE(mem_ctx);
 773         return err;
 774 }
 775
 776 /*
 777  * Table of function pointers for default access
 778  */
 779
 780 REGISTRY_OPS regdb_ops = {
 781         regdb_fetch_keys,
 782         regdb_fetch_values,
 783         regdb_store_keys,
 784         regdb_store_values,
 785         NULL,
 786         regdb_get_secdesc,
 787         regdb_set_secdesc
 788 };