dlls/advapi32/registry.c

   1 /*
   2  * Registry management
   3  *
   4  * Copyright (C) 1999 Alexandre Julliard
   5  *
   6  * Based on misc/registry.c code
   7  * Copyright (C) 1996 Marcus Meissner
   8  * Copyright (C) 1998 Matthew Becker
   9  * Copyright (C) 1999 Sylvain St-Germain
  10  *
  11  * This file is concerned about handle management and interaction with the Wine server.
  12  * Registry file I/O is in misc/registry.c.
  13  *
  14  * This library is free software; you can redistribute it and/or
  15  * modify it under the terms of the GNU Lesser General Public
  16  * License as published by the Free Software Foundation; either
  17  * version 2.1 of the License, or (at your option) any later version.
  18  *
  19  * This library is distributed in the hope that it will be useful,
  20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  22  * Lesser General Public License for more details.
  23  *
  24  * You should have received a copy of the GNU Lesser General Public
  25  * License along with this library; if not, write to the Free Software
  26  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  27  */
  28
  29 #include <stdlib.h>
  30 #include <stdarg.h>
  31 #include <stdio.h>
  32
  33 #include "windef.h"
  34 #include "winbase.h"
  35 #include "winreg.h"
  36 #include "winerror.h"
  37 #include "ntstatus.h"
  38 #include "wine/unicode.h"
  39 #include "wine/server.h"
  40 #include "wine/debug.h"
  41 #include "winternl.h"
  42
  43 WINE_DEFAULT_DEBUG_CHANNEL(reg);
  44
  45 /* allowed bits for access mask */
  46 #define KEY_ACCESS_MASK (KEY_ALL_ACCESS | MAXIMUM_ALLOWED)
  47
  48 #define HKEY_SPECIAL_ROOT_FIRST   HKEY_CLASSES_ROOT
  49 #define HKEY_SPECIAL_ROOT_LAST    HKEY_DYN_DATA
  50 #define NB_SPECIAL_ROOT_KEYS      ((UINT)HKEY_SPECIAL_ROOT_LAST - (UINT)HKEY_SPECIAL_ROOT_FIRST + 1)
  51
  52 static HKEY special_root_keys[NB_SPECIAL_ROOT_KEYS];
  53
  54 static const WCHAR name_CLASSES_ROOT[] =
  55     {'M','a','c','h','i','n','e','\\',
  56      'S','o','f','t','w','a','r','e','\\',
  57      'C','l','a','s','s','e','s',0};
  58 static const WCHAR name_LOCAL_MACHINE[] =
  59     {'M','a','c','h','i','n','e',0};
  60 static const WCHAR name_USERS[] =
  61     {'U','s','e','r',0};
  62 static const WCHAR name_PERFORMANCE_DATA[] =
  63     {'P','e','r','f','D','a','t','a',0};
  64 static const WCHAR name_CURRENT_CONFIG[] =
  65     {'M','a','c','h','i','n','e','\\',
  66      'S','y','s','t','e','m','\\',
  67      'C','u','r','r','e','n','t','C','o','n','t','r','o','l','S','e','t','\\',
  68      'H','a','r','d','w','a','r','e','P','r','o','f','i','l','e','s','\\',
  69      'C','u','r','r','e','n','t',0};
  70 static const WCHAR name_DYN_DATA[] =
  71     {'D','y','n','D','a','t','a',0};
  72
  73 #define DECL_STR(key) { sizeof(name_##key)-sizeof(WCHAR), sizeof(name_##key), (LPWSTR)name_##key }
  74 static UNICODE_STRING root_key_names[NB_SPECIAL_ROOT_KEYS] =
  75 {
  76     DECL_STR(CLASSES_ROOT),
  77     { 0, 0, NULL },         /* HKEY_CURRENT_USER is determined dynamically */
  78     DECL_STR(LOCAL_MACHINE),
  79     DECL_STR(USERS),
  80     DECL_STR(PERFORMANCE_DATA),
  81     DECL_STR(CURRENT_CONFIG),
  82     DECL_STR(DYN_DATA)
  83 };
  84 #undef DECL_STR
  85
  86
  87 /* check if value type needs string conversion (Ansi<->Unicode) */
  88 inline static int is_string( DWORD type )
  89 {
  90     return (type == REG_SZ) || (type == REG_EXPAND_SZ) || (type == REG_MULTI_SZ);
  91 }
  92
  93 /* check if current version is NT or Win95 */
  94 inline static int is_version_nt(void)
  95 {
  96     return !(GetVersion() & 0x80000000);
  97 }
  98
  99 /* create one of the HKEY_* special root keys */
 100 static HKEY create_special_root_hkey( HKEY hkey, DWORD access )
 101 {
 102     HKEY ret = 0;
 103     int idx = (UINT)hkey - (UINT)HKEY_SPECIAL_ROOT_FIRST;
 104
 105     if (hkey == HKEY_CURRENT_USER)
 106     {
 107         if (RtlOpenCurrentUser( access, &hkey )) return 0;
 108         TRACE( "HKEY_CURRENT_USER -> %p\n", hkey );
 109     }
 110     else
 111     {
 112         OBJECT_ATTRIBUTES attr;
 113
 114         attr.Length = sizeof(attr);
 115         attr.RootDirectory = 0;
 116         attr.ObjectName = &root_key_names[idx];
 117         attr.Attributes = 0;
 118         attr.SecurityDescriptor = NULL;
 119         attr.SecurityQualityOfService = NULL;
 120         if (NtCreateKey( &hkey, access, &attr, 0, NULL, 0, NULL )) return 0;
 121         TRACE( "%s -> %p\n", debugstr_w(attr.ObjectName->Buffer), hkey );
 122     }
 123
 124     if (!(ret = InterlockedCompareExchangePointer( (void **)&special_root_keys[idx], hkey, 0 )))
 125         ret = hkey;
 126     else
 127         NtClose( hkey );  /* somebody beat us to it */
 128     return ret;
 129 }
 130
 131 /* map the hkey from special root to normal key if necessary */
 132 inline static HKEY get_special_root_hkey( HKEY hkey )
 133 {
 134     HKEY ret = hkey;
 135
 136     if ((hkey >= HKEY_SPECIAL_ROOT_FIRST) && (hkey <= HKEY_SPECIAL_ROOT_LAST))
 137     {
 138         if (!(ret = special_root_keys[(UINT)hkey - (UINT)HKEY_SPECIAL_ROOT_FIRST]))
 139             ret = create_special_root_hkey( hkey, KEY_ALL_ACCESS );
 140     }
 141     return ret;
 142 }
 143
 144
 145 /******************************************************************************
 146  * RegCreateKeyExW   [ADVAPI32.@]
 147  *
 148  * See RegCreateKeyExA.
 149  */
 150 DWORD WINAPI RegCreateKeyExW( HKEY hkey, LPCWSTR name, DWORD reserved, LPCWSTR class,
 151                               DWORD options, REGSAM access, SECURITY_ATTRIBUTES *sa,
 152                               PHKEY retkey, LPDWORD dispos )
 153 {
 154     OBJECT_ATTRIBUTES attr;
 155     UNICODE_STRING nameW, classW;
 156
 157     if (reserved) return ERROR_INVALID_PARAMETER;
 158     if (!(access & KEY_ACCESS_MASK) || (access & ~KEY_ACCESS_MASK)) return ERROR_ACCESS_DENIED;
 159     if (!(hkey = get_special_root_hkey( hkey ))) return ERROR_INVALID_HANDLE;
 160
 161     attr.Length = sizeof(attr);
 162     attr.RootDirectory = hkey;
 163     attr.ObjectName = &nameW;
 164     attr.Attributes = 0;
 165     attr.SecurityDescriptor = NULL;
 166     attr.SecurityQualityOfService = NULL;
 167     RtlInitUnicodeString( &nameW, name );
 168     RtlInitUnicodeString( &classW, class );
 169
 170     return RtlNtStatusToDosError( NtCreateKey( retkey, access, &attr, 0,
 171                                                &classW, options, dispos ) );
 172 }
 173
 174
 175 /******************************************************************************
 176  * RegCreateKeyExA   [ADVAPI32.@]
 177  *
 178  * Open a registry key, creating it if it doesn't exist.
 179  *
 180  * PARAMS
 181  *  hkey       [I] Handle of the parent registry key
 182  *  name       [I] Name of the new key to open or create
 183  *  reserved   [I] Reserved, pass 0
 184  *  class      [I] The object type of the new key
 185  *  options    [I] Flags controlling the key creation (REG_OPTION_* flags from "winnt.h")
 186  *  access     [I] Access level desired
 187  *  sa         [I] Security attributes for the key
 188  *  retkey     [O] Destination for the resulting handle
 189  *  dispos     [O] Receives REG_CREATED_NEW_KEY or REG_OPENED_EXISTING_KEY
 190  *
 191  * RETURNS
 192  *  Success: ERROR_SUCCESS.
 193  *  Failure: A standard Win32 error code. retkey remains untouched.
 194  *
 195  * FIXME
 196  *  MAXIMUM_ALLOWED in access mask not supported by server
 197  */
 198 DWORD WINAPI RegCreateKeyExA( HKEY hkey, LPCSTR name, DWORD reserved, LPCSTR class,
 199                               DWORD options, REGSAM access, SECURITY_ATTRIBUTES *sa,
 200                               PHKEY retkey, LPDWORD dispos )
 201 {
 202     OBJECT_ATTRIBUTES attr;
 203     UNICODE_STRING classW;
 204     ANSI_STRING nameA, classA;
 205     NTSTATUS status;
 206
 207     if (reserved) return ERROR_INVALID_PARAMETER;
 208     if (!is_version_nt()) access = KEY_ALL_ACCESS;  /* Win95 ignores the access mask */
 209     else if (!(access & KEY_ACCESS_MASK) || (access & ~KEY_ACCESS_MASK)) return ERROR_ACCESS_DENIED;
 210     if (!(hkey = get_special_root_hkey( hkey ))) return ERROR_INVALID_HANDLE;
 211
 212     attr.Length = sizeof(attr);
 213     attr.RootDirectory = hkey;
 214     attr.ObjectName = &NtCurrentTeb()->StaticUnicodeString;
 215     attr.Attributes = 0;
 216     attr.SecurityDescriptor = NULL;
 217     attr.SecurityQualityOfService = NULL;
 218     RtlInitAnsiString( &nameA, name );
 219     RtlInitAnsiString( &classA, class );
 220
 221     if (!(status = RtlAnsiStringToUnicodeString( &NtCurrentTeb()->StaticUnicodeString,
 222                                                  &nameA, FALSE )))
 223     {
 224         if (!(status = RtlAnsiStringToUnicodeString( &classW, &classA, TRUE )))
 225         {
 226             status = NtCreateKey( retkey, access, &attr, 0, &classW, options, dispos );
 227             RtlFreeUnicodeString( &classW );
 228         }
 229     }
 230     return RtlNtStatusToDosError( status );
 231 }
 232
 233
 234 /******************************************************************************
 235  * RegCreateKeyW   [ADVAPI32.@]
 236  *
 237  * Creates the specified reg key.
 238  *
 239  * PARAMS
 240  *  hKey      [I] Handle to an open key.
 241  *  lpSubKey  [I] Name of a key that will be opened or created.
 242  *  phkResult [O] Receives a handle to the opened or created key.
 243  *
 244  * RETURNS
 245  *  Success: ERROR_SUCCESS
 246  *  Failure: nonzero error code defined in Winerror.h
 247  */
 248 DWORD WINAPI RegCreateKeyW( HKEY hkey, LPCWSTR lpSubKey, PHKEY phkResult )
 249 {
 250     /* FIXME: previous implementation converted ERROR_INVALID_HANDLE to ERROR_BADKEY, */
 251     /* but at least my version of NT (4.0 SP5) doesn't do this.  -- AJ */
 252     return RegCreateKeyExW( hkey, lpSubKey, 0, NULL, REG_OPTION_NON_VOLATILE,
 253                             KEY_ALL_ACCESS, NULL, phkResult, NULL );
 254 }
 255
 256
 257 /******************************************************************************
 258  * RegCreateKeyA   [ADVAPI32.@]
 259  *
 260  * see RegCreateKeyW
 261  */
 262 DWORD WINAPI RegCreateKeyA( HKEY hkey, LPCSTR lpSubKey, PHKEY phkResult )
 263 {
 264     return RegCreateKeyExA( hkey, lpSubKey, 0, NULL, REG_OPTION_NON_VOLATILE,
 265                             KEY_ALL_ACCESS, NULL, phkResult, NULL );
 266 }
 267
 268
 269
 270 /******************************************************************************
 271  * RegOpenKeyExW   [ADVAPI32.@]
 272  *
 273  * See RegOpenKeyExA.
 274  */
 275 DWORD WINAPI RegOpenKeyExW( HKEY hkey, LPCWSTR name, DWORD reserved, REGSAM access, PHKEY retkey )
 276 {
 277     OBJECT_ATTRIBUTES attr;
 278     UNICODE_STRING nameW;
 279
 280     if (!(hkey = get_special_root_hkey( hkey ))) return ERROR_INVALID_HANDLE;
 281
 282     attr.Length = sizeof(attr);
 283     attr.RootDirectory = hkey;
 284     attr.ObjectName = &nameW;
 285     attr.Attributes = 0;
 286     attr.SecurityDescriptor = NULL;
 287     attr.SecurityQualityOfService = NULL;
 288     RtlInitUnicodeString( &nameW, name );
 289     return RtlNtStatusToDosError( NtOpenKey( retkey, access, &attr ) );
 290 }
 291
 292
 293 /******************************************************************************
 294  * RegOpenKeyExA   [ADVAPI32.@]
 295  *
 296  * Open a registry key.
 297  *
 298  * PARAMS
 299  *  hkey       [I] Handle of open key
 300  *  name       [I] Name of subkey to open
 301  *  reserved   [I] Reserved - must be zero
 302  *  access     [I] Security access mask
 303  *  retkey     [O] Handle to open key
 304  *
 305  * RETURNS
 306  *  Success: ERROR_SUCCESS
 307  *  Failure: A standard Win32 error code. retkey is set to 0.
 308  *
 309  * NOTES
 310  *  Unlike RegCreateKeyExA(), this function will not create the key if it
 311  *  does not exist.
 312  */
 313 DWORD WINAPI RegOpenKeyExA( HKEY hkey, LPCSTR name, DWORD reserved, REGSAM access, PHKEY retkey )
 314 {
 315     OBJECT_ATTRIBUTES attr;
 316     STRING nameA;
 317     NTSTATUS status;
 318
 319     if (!is_version_nt()) access = KEY_ALL_ACCESS;  /* Win95 ignores the access mask */
 320
 321     if (!(hkey = get_special_root_hkey( hkey ))) return ERROR_INVALID_HANDLE;
 322
 323     attr.Length = sizeof(attr);
 324     attr.RootDirectory = hkey;
 325     attr.ObjectName = &NtCurrentTeb()->StaticUnicodeString;
 326     attr.Attributes = 0;
 327     attr.SecurityDescriptor = NULL;
 328     attr.SecurityQualityOfService = NULL;
 329
 330     RtlInitAnsiString( &nameA, name );
 331     if (!(status = RtlAnsiStringToUnicodeString( &NtCurrentTeb()->StaticUnicodeString,
 332                                                  &nameA, FALSE )))
 333     {
 334         status = NtOpenKey( retkey, access, &attr );
 335     }
 336     return RtlNtStatusToDosError( status );
 337 }
 338
 339
 340 /******************************************************************************
 341  * RegOpenKeyW   [ADVAPI32.@]
 342  *
 343  * See RegOpenKeyA.
 344  */
 345 DWORD WINAPI RegOpenKeyW( HKEY hkey, LPCWSTR name, PHKEY retkey )
 346 {
 347     return RegOpenKeyExW( hkey, name, 0, KEY_ALL_ACCESS, retkey );
 348 }
 349
 350
 351 /******************************************************************************
 352  * RegOpenKeyA   [ADVAPI32.@]
 353  *
 354  * Open a registry key.
 355  *
 356  * PARAMS
 357  *  hkey    [I] Handle of parent key to open the new key under
 358  *  name    [I] Name of the key under hkey to open
 359  *  retkey  [O] Destination for the resulting Handle
 360  *
 361  * RETURNS
 362  *  Success: ERROR_SUCCESS
 363  *  Failure: A standard Win32 error code. retkey is set to 0.
 364  */
 365 DWORD WINAPI RegOpenKeyA( HKEY hkey, LPCSTR name, PHKEY retkey )
 366 {
 367     return RegOpenKeyExA( hkey, name, 0, KEY_ALL_ACCESS, retkey );
 368 }
 369
 370
 371 /******************************************************************************
 372  * RegOpenCurrentUser   [ADVAPI32.@]
 373  *
 374  * FIXME: This function is supposed to retrieve a handle to the
 375  * HKEY_CURRENT_USER for the user the current thread is impersonating.
 376  * Since Wine does not currently allow threads to impersonate other users,
 377  * this stub should work fine.
 378  */
 379 DWORD WINAPI RegOpenCurrentUser( REGSAM access, PHKEY retkey )
 380 {
 381     return RegOpenKeyExA( HKEY_CURRENT_USER, "", 0, access, retkey );
 382 }
 383
 384
 385
 386 /******************************************************************************
 387  * RegEnumKeyExW   [ADVAPI32.@]
 388  *
 389  * PARAMS
 390  *  hkey         [I] Handle to key to enumerate
 391  *  index        [I] Index of subkey to enumerate
 392  *  name         [O] Buffer for subkey name
 393  *  name_len     [O] Size of subkey buffer
 394  *  reserved     [I] Reserved
 395  *  class        [O] Buffer for class string
 396  *  class_len    [O] Size of class buffer
 397  *  ft           [O] Time key last written to
 398  *
 399  * RETURNS
 400  *  Success: ERROR_SUCCESS
 401  *  Failure: System error code. If there are no more subkeys available, the
 402  *           function returns ERROR_NO_MORE_ITEMS.
 403  */
 404 DWORD WINAPI RegEnumKeyExW( HKEY hkey, DWORD index, LPWSTR name, LPDWORD name_len,
 405                             LPDWORD reserved, LPWSTR class, LPDWORD class_len, FILETIME *ft )
 406 {
 407     NTSTATUS status;
 408     char buffer[256], *buf_ptr = buffer;
 409     KEY_NODE_INFORMATION *info = (KEY_NODE_INFORMATION *)buffer;
 410     DWORD total_size;
 411
 412     TRACE( "(%p,%ld,%p,%p(%ld),%p,%p,%p,%p)\n", hkey, index, name, name_len,
 413            name_len ? *name_len : -1, reserved, class, class_len, ft );
 414
 415     if (reserved) return ERROR_INVALID_PARAMETER;
 416     if (!(hkey = get_special_root_hkey( hkey ))) return ERROR_INVALID_HANDLE;
 417
 418     status = NtEnumerateKey( hkey, index, KeyNodeInformation,
 419                              buffer, sizeof(buffer), &total_size );
 420
 421     while (status == STATUS_BUFFER_OVERFLOW)
 422     {
 423         /* retry with a dynamically allocated buffer */
 424         if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
 425         if (!(buf_ptr = HeapAlloc( GetProcessHeap(), 0, total_size )))
 426             return ERROR_NOT_ENOUGH_MEMORY;
 427         info = (KEY_NODE_INFORMATION *)buf_ptr;
 428         status = NtEnumerateKey( hkey, index, KeyNodeInformation,
 429                                  buf_ptr, total_size, &total_size );
 430     }
 431
 432     if (!status)
 433     {
 434         DWORD len = info->NameLength / sizeof(WCHAR);
 435         DWORD cls_len = info->ClassLength / sizeof(WCHAR);
 436
 437         if (ft) *ft = *(FILETIME *)&info->LastWriteTime;
 438
 439         if (len >= *name_len || (class && class_len && (cls_len >= *class_len)))
 440             status = STATUS_BUFFER_OVERFLOW;
 441         else
 442         {
 443             *name_len = len;
 444             memcpy( name, info->Name, info->NameLength );
 445             name[len] = 0;
 446             if (class_len)
 447             {
 448                 *class_len = cls_len;
 449                 if (class)
 450                 {
 451                     memcpy( class, buf_ptr + info->ClassOffset, info->ClassLength );
 452                     class[cls_len] = 0;
 453                 }
 454             }
 455         }
 456     }
 457
 458     if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
 459     return RtlNtStatusToDosError( status );
 460 }
 461
 462
 463 /******************************************************************************
 464  * RegEnumKeyExA   [ADVAPI32.@]
 465  *
 466  * see RegEnumKeyExW
 467  */
 468 DWORD WINAPI RegEnumKeyExA( HKEY hkey, DWORD index, LPSTR name, LPDWORD name_len,
 469                             LPDWORD reserved, LPSTR class, LPDWORD class_len, FILETIME *ft )
 470 {
 471     NTSTATUS status;
 472     char buffer[256], *buf_ptr = buffer;
 473     KEY_NODE_INFORMATION *info = (KEY_NODE_INFORMATION *)buffer;
 474     DWORD total_size;
 475
 476     TRACE( "(%p,%ld,%p,%p(%ld),%p,%p,%p,%p)\n", hkey, index, name, name_len,
 477            name_len ? *name_len : -1, reserved, class, class_len, ft );
 478
 479     if (reserved) return ERROR_INVALID_PARAMETER;
 480     if (!(hkey = get_special_root_hkey( hkey ))) return ERROR_INVALID_HANDLE;
 481
 482     status = NtEnumerateKey( hkey, index, KeyNodeInformation,
 483                              buffer, sizeof(buffer), &total_size );
 484
 485     while (status == STATUS_BUFFER_OVERFLOW)
 486     {
 487         /* retry with a dynamically allocated buffer */
 488         if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
 489         if (!(buf_ptr = HeapAlloc( GetProcessHeap(), 0, total_size )))
 490             return ERROR_NOT_ENOUGH_MEMORY;
 491         info = (KEY_NODE_INFORMATION *)buf_ptr;
 492         status = NtEnumerateKey( hkey, index, KeyNodeInformation,
 493                                  buf_ptr, total_size, &total_size );
 494     }
 495
 496     if (!status)
 497     {
 498         DWORD len, cls_len;
 499
 500         RtlUnicodeToMultiByteSize( &len, info->Name, info->NameLength );
 501         RtlUnicodeToMultiByteSize( &cls_len, (WCHAR *)(buf_ptr + info->ClassOffset),
 502                                    info->ClassLength );
 503         if (ft) *ft = *(FILETIME *)&info->LastWriteTime;
 504
 505         if (len >= *name_len || (class && class_len && (cls_len >= *class_len)))
 506             status = STATUS_BUFFER_OVERFLOW;
 507         else
 508         {
 509             *name_len = len;
 510             RtlUnicodeToMultiByteN( name, len, NULL, info->Name, info->NameLength );
 511             name[len] = 0;
 512             if (class_len)
 513             {
 514                 *class_len = cls_len;
 515                 if (class)
 516                 {
 517                     RtlUnicodeToMultiByteN( class, cls_len, NULL,
 518                                             (WCHAR *)(buf_ptr + info->ClassOffset),
 519                                             info->ClassLength );
 520                     class[cls_len] = 0;
 521                 }
 522             }
 523         }
 524     }
 525
 526     if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
 527     return RtlNtStatusToDosError( status );
 528 }
 529
 530
 531 /******************************************************************************
 532  * RegEnumKeyW   [ADVAPI32.@]
 533  *
 534  * Enumerates subkyes of the specified open reg key.
 535  *
 536  * PARAMS
 537  *  hKey    [I] Handle to an open key.
 538  *  dwIndex [I] Index of the subkey of hKey to retrieve.
 539  *  lpName  [O] Name of the subkey.
 540  *  cchName [I] Size of lpName in TCHARS.
 541  *
 542  * RETURNS
 543  *  Success: ERROR_SUCCESS
 544  *  Failure: system error code. If there are no more subkeys available, the
 545  *           function returns ERROR_NO_MORE_ITEMS.
 546  */
 547 DWORD WINAPI RegEnumKeyW( HKEY hkey, DWORD index, LPWSTR name, DWORD name_len )
 548 {
 549     return RegEnumKeyExW( hkey, index, name, &name_len, NULL, NULL, NULL, NULL );
 550 }
 551
 552
 553 /******************************************************************************
 554  * RegEnumKeyA   [ADVAPI32.@]
 555  *
 556  * see RegEnumKeyW
 557  */
 558 DWORD WINAPI RegEnumKeyA( HKEY hkey, DWORD index, LPSTR name, DWORD name_len )
 559 {
 560     return RegEnumKeyExA( hkey, index, name, &name_len, NULL, NULL, NULL, NULL );
 561 }
 562
 563
 564 /******************************************************************************
 565  * RegQueryInfoKeyW   [ADVAPI32.@]
 566  *
 567  * PARAMS
 568  *    hkey       [I] Handle to key to query
 569  *    class      [O] Buffer for class string
 570  *    class_len  [O] Size of class string buffer
 571  *    reserved   [I] Reserved
 572  *    subkeys    [O] Buffer for number of subkeys
 573  *    max_subkey [O] Buffer for longest subkey name length
 574  *    max_class  [O] Buffer for longest class string length
 575  *    values     [O] Buffer for number of value entries
 576  *    max_value  [O] Buffer for longest value name length
 577  *    max_data   [O] Buffer for longest value data length
 578  *    security   [O] Buffer for security descriptor length
 579  *    modif      [O] Modification time
 580  *
 581  * - win95 allows class to be valid and class_len to be NULL
 582  * - winnt returns ERROR_INVALID_PARAMETER if class is valid and class_len is NULL
 583  * - both allow class to be NULL and class_len to be NULL
 584  * (it's hard to test validity, so test !NULL instead)
 585  */
 586 DWORD WINAPI RegQueryInfoKeyW( HKEY hkey, LPWSTR class, LPDWORD class_len, LPDWORD reserved,
 587                                LPDWORD subkeys, LPDWORD max_subkey, LPDWORD max_class,
 588                                LPDWORD values, LPDWORD max_value, LPDWORD max_data,
 589                                LPDWORD security, FILETIME *modif )
 590 {
 591     NTSTATUS status;
 592     char buffer[256], *buf_ptr = buffer;
 593     KEY_FULL_INFORMATION *info = (KEY_FULL_INFORMATION *)buffer;
 594     DWORD total_size;
 595
 596     TRACE( "(%p,%p,%ld,%p,%p,%p,%p,%p,%p,%p,%p)\n", hkey, class, class_len ? *class_len : 0,
 597            reserved, subkeys, max_subkey, values, max_value, max_data, security, modif );
 598
 599     if (class && !class_len && is_version_nt()) return ERROR_INVALID_PARAMETER;
 600     if (!(hkey = get_special_root_hkey( hkey ))) return ERROR_INVALID_HANDLE;
 601
 602     status = NtQueryKey( hkey, KeyFullInformation, buffer, sizeof(buffer), &total_size );
 603     if (status && status != STATUS_BUFFER_OVERFLOW) goto done;
 604
 605     if (class)
 606     {
 607         /* retry with a dynamically allocated buffer */
 608         while (status == STATUS_BUFFER_OVERFLOW)
 609         {
 610             if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
 611             if (!(buf_ptr = HeapAlloc( GetProcessHeap(), 0, total_size )))
 612                 return ERROR_NOT_ENOUGH_MEMORY;
 613             info = (KEY_FULL_INFORMATION *)buf_ptr;
 614             status = NtQueryKey( hkey, KeyFullInformation, buf_ptr, total_size, &total_size );
 615         }
 616
 617         if (status) goto done;
 618
 619         if (class_len && (info->ClassLength/sizeof(WCHAR) + 1 > *class_len))
 620         {
 621             status = STATUS_BUFFER_OVERFLOW;
 622         }
 623         else
 624         {
 625             memcpy( class, buf_ptr + info->ClassOffset, info->ClassLength );
 626             class[info->ClassLength/sizeof(WCHAR)] = 0;
 627         }
 628     }
 629     else status = STATUS_SUCCESS;
 630
 631     if (class_len) *class_len = info->ClassLength / sizeof(WCHAR);
 632     if (subkeys) *subkeys = info->SubKeys;
 633     if (max_subkey) *max_subkey = info->MaxNameLen;
 634     if (max_class) *max_class = info->MaxClassLen;
 635     if (values) *values = info->Values;
 636     if (max_value) *max_value = info->MaxValueNameLen;
 637     if (max_data) *max_data = info->MaxValueDataLen;
 638     if (modif) *modif = *(FILETIME *)&info->LastWriteTime;
 639
 640  done:
 641     if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
 642     return RtlNtStatusToDosError( status );
 643 }
 644
 645
 646 /******************************************************************************
 647  * RegQueryMultipleValuesA   [ADVAPI32.@]
 648  *
 649  * Retrieves the type and data for a list of value names associated with a key.
 650  *
 651  * PARAMS
 652  *  hKey       [I] Handle to an open key.
 653  *  val_list   [O] Array of VALENT structures that describes the entries.
 654  *  num_vals   [I] Number of elements in val_list.
 655  *  lpValueBuf [O] Pointer to a buffer that receives the data for each value.
 656  *  ldwTotsize [I/O] Size of lpValueBuf.
 657  *
 658  * RETURNS
 659  *  Success: ERROR_SUCCESS. ldwTotsize contains num bytes copied.
 660  *  Failure: nonzero error code from Winerror.h ldwTotsize contains num needed
 661  *           bytes.
 662  */
 663 DWORD WINAPI RegQueryMultipleValuesA(HKEY hkey, PVALENTA val_list, DWORD num_vals,
 664                                      LPSTR lpValueBuf, LPDWORD ldwTotsize)
 665 {
 666     int i;
 667     DWORD maxBytes = *ldwTotsize;
 668     HRESULT status;
 669     LPSTR bufptr = lpValueBuf;
 670     *ldwTotsize = 0;
 671
 672     TRACE("(%p,%p,%ld,%p,%p=%ld)\n", hkey, val_list, num_vals, lpValueBuf, ldwTotsize, *ldwTotsize);
 673
 674     for(i=0; i < num_vals; ++i)
 675     {
 676
 677         val_list[i].ve_valuelen=0;
 678         status = RegQueryValueExA(hkey, val_list[i].ve_valuename, NULL, NULL, NULL, &val_list[i].ve_valuelen);
 679         if(status != ERROR_SUCCESS)
 680         {
 681             return status;
 682         }
 683
 684         if(lpValueBuf != NULL && *ldwTotsize + val_list[i].ve_valuelen <= maxBytes)
 685         {
 686             status = RegQueryValueExA(hkey, val_list[i].ve_valuename, NULL, &val_list[i].ve_type,
 687                                       bufptr, &val_list[i].ve_valuelen);
 688             if(status != ERROR_SUCCESS)
 689             {
 690                 return status;
 691             }
 692
 693             val_list[i].ve_valueptr = (DWORD_PTR)bufptr;
 694
 695             bufptr += val_list[i].ve_valuelen;
 696         }
 697
 698         *ldwTotsize += val_list[i].ve_valuelen;
 699     }
 700     return lpValueBuf != NULL && *ldwTotsize <= maxBytes ? ERROR_SUCCESS : ERROR_MORE_DATA;
 701 }
 702
 703
 704 /******************************************************************************
 705  * RegQueryMultipleValuesW   [ADVAPI32.@]
 706  *
 707  * see RegQueryMultipleValuesA
 708  */
 709 DWORD WINAPI RegQueryMultipleValuesW(HKEY hkey, PVALENTW val_list, DWORD num_vals,
 710                                      LPWSTR lpValueBuf, LPDWORD ldwTotsize)
 711 {
 712     int i;
 713     DWORD maxBytes = *ldwTotsize;
 714     HRESULT status;
 715     LPSTR bufptr = (LPSTR)lpValueBuf;
 716     *ldwTotsize = 0;
 717
 718     TRACE("(%p,%p,%ld,%p,%p=%ld)\n", hkey, val_list, num_vals, lpValueBuf, ldwTotsize, *ldwTotsize);
 719
 720     for(i=0; i < num_vals; ++i)
 721     {
 722         val_list[i].ve_valuelen=0;
 723         status = RegQueryValueExW(hkey, val_list[i].ve_valuename, NULL, NULL, NULL, &val_list[i].ve_valuelen);
 724         if(status != ERROR_SUCCESS)
 725         {
 726             return status;
 727         }
 728
 729         if(lpValueBuf != NULL && *ldwTotsize + val_list[i].ve_valuelen <= maxBytes)
 730         {
 731             status = RegQueryValueExW(hkey, val_list[i].ve_valuename, NULL, &val_list[i].ve_type,
 732                                       bufptr, &val_list[i].ve_valuelen);
 733             if(status != ERROR_SUCCESS)
 734             {
 735                 return status;
 736             }
 737
 738             val_list[i].ve_valueptr = (DWORD_PTR)bufptr;
 739
 740             bufptr += val_list[i].ve_valuelen;
 741         }
 742
 743         *ldwTotsize += val_list[i].ve_valuelen;
 744     }
 745     return lpValueBuf != NULL && *ldwTotsize <= maxBytes ? ERROR_SUCCESS : ERROR_MORE_DATA;
 746 }
 747
 748 /******************************************************************************
 749  * RegQueryInfoKeyA   [ADVAPI32.@]
 750  *
 751  * Retrieves information about a registry key.
 752  *
 753  * PARAMS
 754  *  hKey                   [I] Handle to an open key.
 755  *  lpClass                [O] Class string of the key.
 756  *  lpcClass               [I/O] size of lpClass.
 757  *  lpReserved             [I] Reserved; must be NULL.
 758  *  lpcSubKeys             [O] Number of subkeys contained by the key.
 759  *  lpcMaxSubKeyLen        [O] Size of the key's subkey with the longest name.
 760  *  lpcMaxClassLen         [O] Size of the longest string specifying a subkey
 761  *                             class in TCHARS.
 762  *  lpcValues              [O] Number of values associated with the key.
 763  *  lpcMaxValueNameLen     [O] Size of the key's longest value name in TCHARS.
 764  *  lpcMaxValueLen         [O] Longest data component among the key's values
 765  *  lpcbSecurityDescriptor [O] Size of the key's security descriptor.
 766  *  lpftLastWriteTime      [O] FILETIME strucutre that is the last write time.
 767  *
 768  *  RETURNS
 769  *   Success: ERROR_SUCCESS
 770  *   Failure: nonzero error code from Winerror.h
 771  */
 772 DWORD WINAPI RegQueryInfoKeyA( HKEY hkey, LPSTR class, LPDWORD class_len, LPDWORD reserved,
 773                                LPDWORD subkeys, LPDWORD max_subkey, LPDWORD max_class,
 774                                LPDWORD values, LPDWORD max_value, LPDWORD max_data,
 775                                LPDWORD security, FILETIME *modif )
 776 {
 777     NTSTATUS status;
 778     char buffer[256], *buf_ptr = buffer;
 779     KEY_FULL_INFORMATION *info = (KEY_FULL_INFORMATION *)buffer;
 780     DWORD total_size, len;
 781
 782     TRACE( "(%p,%p,%ld,%p,%p,%p,%p,%p,%p,%p,%p)\n", hkey, class, class_len ? *class_len : 0,
 783            reserved, subkeys, max_subkey, values, max_value, max_data, security, modif );
 784
 785     if (class && !class_len && is_version_nt()) return ERROR_INVALID_PARAMETER;
 786     if (!(hkey = get_special_root_hkey( hkey ))) return ERROR_INVALID_HANDLE;
 787
 788     status = NtQueryKey( hkey, KeyFullInformation, buffer, sizeof(buffer), &total_size );
 789     if (status && status != STATUS_BUFFER_OVERFLOW) goto done;
 790
 791     if (class || class_len)
 792     {
 793         /* retry with a dynamically allocated buffer */
 794         while (status == STATUS_BUFFER_OVERFLOW)
 795         {
 796             if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
 797             if (!(buf_ptr = HeapAlloc( GetProcessHeap(), 0, total_size )))
 798                 return ERROR_NOT_ENOUGH_MEMORY;
 799             info = (KEY_FULL_INFORMATION *)buf_ptr;
 800             status = NtQueryKey( hkey, KeyFullInformation, buf_ptr, total_size, &total_size );
 801         }
 802
 803         if (status) goto done;
 804
 805         RtlUnicodeToMultiByteSize( &len, (WCHAR *)(buf_ptr + info->ClassOffset), info->ClassLength);
 806         if (class_len)
 807         {
 808             if (len + 1 > *class_len) status = STATUS_BUFFER_OVERFLOW;
 809             *class_len = len;
 810         }
 811         if (class && !status)
 812         {
 813             RtlUnicodeToMultiByteN( class, len, NULL, (WCHAR *)(buf_ptr + info->ClassOffset),
 814                                     info->ClassLength );
 815             class[len] = 0;
 816         }
 817     }
 818     else status = STATUS_SUCCESS;
 819
 820     if (subkeys) *subkeys = info->SubKeys;
 821     if (max_subkey) *max_subkey = info->MaxNameLen;
 822     if (max_class) *max_class = info->MaxClassLen;
 823     if (values) *values = info->Values;
 824     if (max_value) *max_value = info->MaxValueNameLen;
 825     if (max_data) *max_data = info->MaxValueDataLen;
 826     if (modif) *modif = *(FILETIME *)&info->LastWriteTime;
 827
 828  done:
 829     if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
 830     return RtlNtStatusToDosError( status );
 831 }
 832
 833
 834 /******************************************************************************
 835  * RegCloseKey   [ADVAPI32.@]
 836  *
 837  * Close an open registry key.
 838  *
 839  * PARAMS
 840  *  hkey [I] Handle of key to close
 841  *
 842  * RETURNS
 843  *  Success: ERROR_SUCCESS
 844  *  Failure: Error code
 845  */
 846 DWORD WINAPI RegCloseKey( HKEY hkey )
 847 {
 848     if (!hkey || hkey >= (HKEY)0x80000000) return ERROR_SUCCESS;
 849     return RtlNtStatusToDosError( NtClose( hkey ) );
 850 }
 851
 852
 853 /******************************************************************************
 854  * RegDeleteKeyW   [ADVAPI32.@]
 855  *
 856  * See RegDeleteKeyA.
 857  */
 858 DWORD WINAPI RegDeleteKeyW( HKEY hkey, LPCWSTR name )
 859 {
 860     DWORD ret;
 861     HKEY tmp;
 862
 863     if (!(hkey = get_special_root_hkey( hkey ))) return ERROR_INVALID_HANDLE;
 864
 865     if (!name || !*name)
 866     {
 867         ret = RtlNtStatusToDosError( NtDeleteKey( hkey ) );
 868     }
 869     else if (!(ret = RegOpenKeyExW( hkey, name, 0, KEY_ENUMERATE_SUB_KEYS, &tmp )))
 870     {
 871         ret = RtlNtStatusToDosError( NtDeleteKey( tmp ) );
 872         RegCloseKey( tmp );
 873     }
 874     TRACE("%s ret=%08lx\n", debugstr_w(name), ret);
 875     return ret;
 876 }
 877
 878
 879 /******************************************************************************
 880  * RegDeleteKeyA   [ADVAPI32.@]
 881  *
 882  * Delete a registry key.
 883  *
 884  * PARAMS
 885  *  hkey   [I] Handle to parent key containing the key to delete
 886  *  name   [I] Name of the key user hkey to delete
 887  *
 888  * RETURNS
 889  *  Success: ERROR_SUCCESS
 890  *  Failure: Error code
 891  */
 892 DWORD WINAPI RegDeleteKeyA( HKEY hkey, LPCSTR name )
 893 {
 894     DWORD ret;
 895     HKEY tmp;
 896
 897     if (!(hkey = get_special_root_hkey( hkey ))) return ERROR_INVALID_HANDLE;
 898
 899     if (!name || !*name)
 900     {
 901         ret = RtlNtStatusToDosError( NtDeleteKey( hkey ) );
 902     }
 903     else if (!(ret = RegOpenKeyExA( hkey, name, 0, KEY_ENUMERATE_SUB_KEYS, &tmp )))
 904     {
 905         if (!is_version_nt()) /* win95 does recursive key deletes */
 906         {
 907             CHAR name[MAX_PATH];
 908
 909             while(!RegEnumKeyA(tmp, 0, name, sizeof(name)))
 910             {
 911                 if(RegDeleteKeyA(tmp, name))  /* recurse */
 912                     break;
 913             }
 914         }
 915         ret = RtlNtStatusToDosError( NtDeleteKey( tmp ) );
 916         RegCloseKey( tmp );
 917     }
 918     TRACE("%s ret=%08lx\n", debugstr_a(name), ret);
 919     return ret;
 920 }
 921
 922
 923
 924 /******************************************************************************
 925  * RegSetValueExW   [ADVAPI32.@]
 926  *
 927  * Set the data and contents of a registry value.
 928  *
 929  * PARAMS
 930  *  hkey       [I] Handle of key to set value for
 931  *  name       [I] Name of value to set
 932  *  reserved   [I] Reserved, must be zero
 933  *  type       [I] Type of the value being set
 934  *  data       [I] The new contents of the value to set
 935  *  count      [I] Size of data
 936  *
 937  * RETURNS
 938  *  Success: ERROR_SUCCESS
 939  *  Failure: Error code
 940  */
 941 DWORD WINAPI RegSetValueExW( HKEY hkey, LPCWSTR name, DWORD reserved,
 942                              DWORD type, CONST BYTE *data, DWORD count )
 943 {
 944     UNICODE_STRING nameW;
 945
 946     /* no need for version check, not implemented on win9x anyway */
 947     if (count && is_string(type))
 948     {
 949         LPCWSTR str = (LPCWSTR)data;
 950         /* if user forgot to count terminating null, add it (yes NT does this) */
 951         if (str[count / sizeof(WCHAR) - 1] && !str[count / sizeof(WCHAR)])
 952             count += sizeof(WCHAR);
 953     }
 954     if (!(hkey = get_special_root_hkey( hkey ))) return ERROR_INVALID_HANDLE;
 955
 956     RtlInitUnicodeString( &nameW, name );
 957     return RtlNtStatusToDosError( NtSetValueKey( hkey, &nameW, 0, type, data, count ) );
 958 }
 959
 960
 961 /******************************************************************************
 962  * RegSetValueExA   [ADVAPI32.@]
 963  *
 964  * see RegSetValueExW
 965  *
 966  * NOTES
 967  *  win95 does not care about count for REG_SZ and finds out the len by itself (js)
 968  *  NT does definitely care (aj)
 969  */
 970 DWORD WINAPI RegSetValueExA( HKEY hkey, LPCSTR name, DWORD reserved, DWORD type,
 971                              CONST BYTE *data, DWORD count )
 972 {
 973     ANSI_STRING nameA;
 974     WCHAR *dataW = NULL;
 975     NTSTATUS status;
 976
 977     if (!is_version_nt())  /* win95 */
 978     {
 979         if (type == REG_SZ)
 980         {
 981             if (!data) return ERROR_INVALID_PARAMETER;
 982             count = strlen(data) + 1;
 983         }
 984     }
 985     else if (count && is_string(type))
 986     {
 987         /* if user forgot to count terminating null, add it (yes NT does this) */
 988         if (data[count-1] && !data[count]) count++;
 989     }
 990
 991     if (!(hkey = get_special_root_hkey( hkey ))) return ERROR_INVALID_HANDLE;
 992
 993     if (is_string( type )) /* need to convert to Unicode */
 994     {
 995         DWORD lenW;
 996         RtlMultiByteToUnicodeSize( &lenW, data, count );
 997         if (!(dataW = HeapAlloc( GetProcessHeap(), 0, lenW ))) return ERROR_OUTOFMEMORY;
 998         RtlMultiByteToUnicodeN( dataW, lenW, NULL, data, count );
 999         count = lenW;
1000         data = (BYTE *)dataW;
1001     }
1002
1003     RtlInitAnsiString( &nameA, name );
1004     if (!(status = RtlAnsiStringToUnicodeString( &NtCurrentTeb()->StaticUnicodeString,
1005                                                  &nameA, FALSE )))
1006     {
1007         status = NtSetValueKey( hkey, &NtCurrentTeb()->StaticUnicodeString, 0, type, data, count );
1008     }
1009     if (dataW) HeapFree( GetProcessHeap(), 0, dataW );
1010     return RtlNtStatusToDosError( status );
1011 }
1012
1013
1014 /******************************************************************************
1015  * RegSetValueW   [ADVAPI32.@]
1016  *
1017  * Sets the data for the default or unnamed value of a reg key.
1018  *
1019  * PARAMS
1020  *  hKey     [I] Handle to an open key.
1021  *  lpSubKey [I] Name of a subkey of hKey.
1022  *  dwType   [I] Type of information to store.
1023  *  lpData   [I] String that contains the data to set for the default value.
1024  *  cbData   [I] Size of lpData.
1025  *
1026  * RETURNS
1027  *  Success: ERROR_SUCCESS
1028  *  Failure: nonzero error code from Winerror.h
1029  */
1030 DWORD WINAPI RegSetValueW( HKEY hkey, LPCWSTR name, DWORD type, LPCWSTR data, DWORD count )
1031 {
1032     HKEY subkey = hkey;
1033     DWORD ret;
1034
1035     TRACE("(%p,%s,%ld,%s,%ld)\n", hkey, debugstr_w(name), type, debugstr_w(data), count );
1036
1037     if (type != REG_SZ) return ERROR_INVALID_PARAMETER;
1038
1039     if (name && name[0])  /* need to create the subkey */
1040     {
1041         if ((ret = RegCreateKeyW( hkey, name, &subkey )) != ERROR_SUCCESS) return ret;
1042     }
1043
1044     ret = RegSetValueExW( subkey, NULL, 0, REG_SZ, (LPBYTE)data,
1045                           (strlenW( data ) + 1) * sizeof(WCHAR) );
1046     if (subkey != hkey) RegCloseKey( subkey );
1047     return ret;
1048 }
1049
1050
1051 /******************************************************************************
1052  * RegSetValueA   [ADVAPI32.@]
1053  *
1054  * see RegSetValueW
1055  */
1056 DWORD WINAPI RegSetValueA( HKEY hkey, LPCSTR name, DWORD type, LPCSTR data, DWORD count )
1057 {
1058     HKEY subkey = hkey;
1059     DWORD ret;
1060
1061     TRACE("(%p,%s,%ld,%s,%ld)\n", hkey, debugstr_a(name), type, debugstr_a(data), count );
1062
1063     if (type != REG_SZ) return ERROR_INVALID_PARAMETER;
1064
1065     if (name && name[0])  /* need to create the subkey */
1066     {
1067         if ((ret = RegCreateKeyA( hkey, name, &subkey )) != ERROR_SUCCESS) return ret;
1068     }
1069     ret = RegSetValueExA( subkey, NULL, 0, REG_SZ, (LPBYTE)data, strlen(data)+1 );
1070     if (subkey != hkey) RegCloseKey( subkey );
1071     return ret;
1072 }
1073
1074
1075
1076 /******************************************************************************
1077  * RegQueryValueExW   [ADVAPI32.@]
1078  *
1079  * See RegQueryValueExA.
1080  */
1081 DWORD WINAPI RegQueryValueExW( HKEY hkey, LPCWSTR name, LPDWORD reserved, LPDWORD type,
1082                                LPBYTE data, LPDWORD count )
1083 {
1084     NTSTATUS status;
1085     UNICODE_STRING name_str;
1086     DWORD total_size;
1087     char buffer[256], *buf_ptr = buffer;
1088     KEY_VALUE_PARTIAL_INFORMATION *info = (KEY_VALUE_PARTIAL_INFORMATION *)buffer;
1089     static const int info_size = offsetof( KEY_VALUE_PARTIAL_INFORMATION, Data );
1090
1091     TRACE("(%p,%s,%p,%p,%p,%p=%ld)\n",
1092           hkey, debugstr_w(name), reserved, type, data, count,
1093           (count && data) ? *count : 0 );
1094
1095     if ((data && !count) || reserved) return ERROR_INVALID_PARAMETER;
1096     if (!(hkey = get_special_root_hkey( hkey ))) return ERROR_INVALID_HANDLE;
1097
1098     RtlInitUnicodeString( &name_str, name );
1099
1100     if (data) total_size = min( sizeof(buffer), *count + info_size );
1101     else total_size = info_size;
1102
1103     status = NtQueryValueKey( hkey, &name_str, KeyValuePartialInformation,
1104                               buffer, total_size, &total_size );
1105     if (status && status != STATUS_BUFFER_OVERFLOW) goto done;
1106
1107     if (data)
1108     {
1109         /* retry with a dynamically allocated buffer */
1110         while (status == STATUS_BUFFER_OVERFLOW && total_size - info_size <= *count)
1111         {
1112             if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
1113             if (!(buf_ptr = HeapAlloc( GetProcessHeap(), 0, total_size )))
1114                 return ERROR_NOT_ENOUGH_MEMORY;
1115             info = (KEY_VALUE_PARTIAL_INFORMATION *)buf_ptr;
1116             status = NtQueryValueKey( hkey, &name_str, KeyValuePartialInformation,
1117                                       buf_ptr, total_size, &total_size );
1118         }
1119
1120         if (!status)
1121         {
1122             memcpy( data, buf_ptr + info_size, total_size - info_size );
1123             /* if the type is REG_SZ and data is not 0-terminated
1124              * and there is enough space in the buffer NT appends a \0 */
1125             if (total_size - info_size <= *count-sizeof(WCHAR) && is_string(info->Type))
1126             {
1127                 WCHAR *ptr = (WCHAR *)(data + total_size - info_size);
1128                 if (ptr > (WCHAR *)data && ptr[-1]) *ptr = 0;
1129             }
1130         }
1131         else if (status != STATUS_BUFFER_OVERFLOW) goto done;
1132     }
1133     else status = STATUS_SUCCESS;
1134
1135     if (type) *type = info->Type;
1136     if (count) *count = total_size - info_size;
1137
1138  done:
1139     if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
1140     return RtlNtStatusToDosError(status);
1141 }
1142
1143
1144 /******************************************************************************
1145  * RegQueryValueExA   [ADVAPI32.@]
1146  *
1147  * Get the type and contents of a specified value under with a key.
1148  *
1149  * PARAMS
1150  *  hkey      [I]   Handle of the key to query
1151  *  name      [I]   Name of value under hkey to query
1152  *  reserved  [I]   Reserved - must be NULL
1153  *  type      [O]   Destination for the value type, or NULL if not required
1154  *  data      [O]   Destination for the values contents, or NULL if not required
1155  *  count     [I/O] Size of data, updated with the number of bytes returned
1156  *
1157  * RETURNS
1158  *  Success: ERROR_SUCCESS. *count is updated with the number of bytes copied to data.
1159  *  Failure: ERROR_INVALID_HANDLE, if hkey is invalid.
1160  *           ERROR_INVALID_PARAMETER, if any other parameter is invalid.
1161  *           ERROR_MORE_DATA, if on input *count is too small to hold the contents.
1162  *
1163  * NOTES
1164  *   MSDN states that if data is too small it is partially filled. In reality
1165  *   it remains untouched.
1166  */
1167 DWORD WINAPI RegQueryValueExA( HKEY hkey, LPCSTR name, LPDWORD reserved, LPDWORD type,
1168                                LPBYTE data, LPDWORD count )
1169 {
1170     NTSTATUS status;
1171     ANSI_STRING nameA;
1172     DWORD total_size;
1173     char buffer[256], *buf_ptr = buffer;
1174     KEY_VALUE_PARTIAL_INFORMATION *info = (KEY_VALUE_PARTIAL_INFORMATION *)buffer;
1175     static const int info_size = offsetof( KEY_VALUE_PARTIAL_INFORMATION, Data );
1176
1177     TRACE("(%p,%s,%p,%p,%p,%p=%ld)\n",
1178           hkey, debugstr_a(name), reserved, type, data, count, count ? *count : 0 );
1179
1180     if ((data && !count) || reserved) return ERROR_INVALID_PARAMETER;
1181     if (!(hkey = get_special_root_hkey( hkey ))) return ERROR_INVALID_HANDLE;
1182
1183     RtlInitAnsiString( &nameA, name );
1184     if ((status = RtlAnsiStringToUnicodeString( &NtCurrentTeb()->StaticUnicodeString,
1185                                                 &nameA, FALSE )))
1186         return RtlNtStatusToDosError(status);
1187
1188     status = NtQueryValueKey( hkey, &NtCurrentTeb()->StaticUnicodeString,
1189                               KeyValuePartialInformation, buffer, sizeof(buffer), &total_size );
1190     if (status && status != STATUS_BUFFER_OVERFLOW) goto done;
1191
1192     /* we need to fetch the contents for a string type even if not requested,
1193      * because we need to compute the length of the ASCII string. */
1194     if (data || is_string(info->Type))
1195     {
1196         /* retry with a dynamically allocated buffer */
1197         while (status == STATUS_BUFFER_OVERFLOW)
1198         {
1199             if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
1200             if (!(buf_ptr = HeapAlloc( GetProcessHeap(), 0, total_size )))
1201             {
1202                 status = STATUS_NO_MEMORY;
1203                 goto done;
1204             }
1205             info = (KEY_VALUE_PARTIAL_INFORMATION *)buf_ptr;
1206             status = NtQueryValueKey( hkey, &NtCurrentTeb()->StaticUnicodeString,
1207                                     KeyValuePartialInformation, buf_ptr, total_size, &total_size );
1208         }
1209
1210         if (status) goto done;
1211
1212         if (is_string(info->Type))
1213         {
1214             DWORD len;
1215
1216             RtlUnicodeToMultiByteSize( &len, (WCHAR *)(buf_ptr + info_size),
1217                                        total_size - info_size );
1218             if (data && len)
1219             {
1220                 if (len > *count) status = STATUS_BUFFER_OVERFLOW;
1221                 else
1222                 {
1223                     RtlUnicodeToMultiByteN( data, len, NULL, (WCHAR *)(buf_ptr + info_size),
1224                                             total_size - info_size );
1225                     /* if the type is REG_SZ and data is not 0-terminated
1226                      * and there is enough space in the buffer NT appends a \0 */
1227                     if (len < *count && data[len-1]) data[len] = 0;
1228                 }
1229             }
1230             total_size = len + info_size;
1231         }
1232         else if (data)
1233         {
1234             if (total_size - info_size > *count) status = STATUS_BUFFER_OVERFLOW;
1235             else memcpy( data, buf_ptr + info_size, total_size - info_size );
1236         }
1237     }
1238     else status = STATUS_SUCCESS;
1239
1240     if (type) *type = info->Type;
1241     if (count) *count = total_size - info_size;
1242
1243  done:
1244     if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
1245     return RtlNtStatusToDosError(status);
1246 }
1247
1248
1249 /******************************************************************************
1250  * RegQueryValueW   [ADVAPI32.@]
1251  *
1252  * Retrieves the data associated with the default or unnamed value of a key.
1253  *
1254  * PARAMS
1255  *  hKey      [I] Handle to an open key.
1256  *  lpSubKey  [I] Name of the subkey of hKey.
1257  *  lpValue   [O] Receives the string associated with the default value
1258  *                of the key.
1259  *  lpcbValue [I/O] Size of lpValue.
1260  *
1261  *  RETURNS
1262  *   Success: ERROR_SUCCESS
1263  *   Failure: nonzero error code from Winerror.h
1264  */
1265 DWORD WINAPI RegQueryValueW( HKEY hkey, LPCWSTR name, LPWSTR data, LPLONG count )
1266 {
1267     DWORD ret;
1268     HKEY subkey = hkey;
1269
1270     TRACE("(%p,%s,%p,%ld)\n", hkey, debugstr_w(name), data, count ? *count : 0 );
1271
1272     if (name && name[0])
1273     {
1274         if ((ret = RegOpenKeyW( hkey, name, &subkey )) != ERROR_SUCCESS) return ret;
1275     }
1276     ret = RegQueryValueExW( subkey, NULL, NULL, NULL, (LPBYTE)data, count );
1277     if (subkey != hkey) RegCloseKey( subkey );
1278     if (ret == ERROR_FILE_NOT_FOUND)
1279     {
1280         /* return empty string if default value not found */
1281         if (data) *data = 0;
1282         if (count) *count = 1;
1283         ret = ERROR_SUCCESS;
1284     }
1285     return ret;
1286 }
1287
1288
1289 /******************************************************************************
1290  * RegQueryValueA   [ADVAPI32.@]
1291  *
1292  * see RegQueryValueW
1293  */
1294 DWORD WINAPI RegQueryValueA( HKEY hkey, LPCSTR name, LPSTR data, LPLONG count )
1295 {
1296     DWORD ret;
1297     HKEY subkey = hkey;
1298
1299     TRACE("(%p,%s,%p,%ld)\n", hkey, debugstr_a(name), data, count ? *count : 0 );
1300
1301     if (name && name[0])
1302     {
1303         if ((ret = RegOpenKeyA( hkey, name, &subkey )) != ERROR_SUCCESS) return ret;
1304     }
1305     ret = RegQueryValueExA( subkey, NULL, NULL, NULL, (LPBYTE)data, count );
1306     if (subkey != hkey) RegCloseKey( subkey );
1307     if (ret == ERROR_FILE_NOT_FOUND)
1308     {
1309         /* return empty string if default value not found */
1310         if (data) *data = 0;
1311         if (count) *count = 1;
1312         ret = ERROR_SUCCESS;
1313     }
1314     return ret;
1315 }
1316
1317
1318 /******************************************************************************
1319  * RegEnumValueW   [ADVAPI32.@]
1320  *
1321  * PARAMS
1322  *  hkey       [I] Handle to key to query
1323  *  index      [I] Index of value to query
1324  *  value      [O] Value string
1325  *  val_count  [I/O] Size of value buffer (in wchars)
1326  *  reserved   [I] Reserved
1327  *  type       [O] Type code
1328  *  data       [O] Value data
1329  *  count      [I/O] Size of data buffer (in bytes)
1330  *
1331  * RETURNS
1332  *  Success: ERROR_SUCCESS
1333  *  Failure: nonzero error code from Winerror.h
1334  */
1335
1336 DWORD WINAPI RegEnumValueW( HKEY hkey, DWORD index, LPWSTR value, LPDWORD val_count,
1337                             LPDWORD reserved, LPDWORD type, LPBYTE data, LPDWORD count )
1338 {
1339     NTSTATUS status;
1340     DWORD total_size;
1341     char buffer[256], *buf_ptr = buffer;
1342     KEY_VALUE_FULL_INFORMATION *info = (KEY_VALUE_FULL_INFORMATION *)buffer;
1343     static const int info_size = offsetof( KEY_VALUE_FULL_INFORMATION, Name );
1344
1345     TRACE("(%p,%ld,%p,%p,%p,%p,%p,%p)\n",
1346           hkey, index, value, val_count, reserved, type, data, count );
1347
1348     /* NT only checks count, not val_count */
1349     if ((data && !count) || reserved) return ERROR_INVALID_PARAMETER;
1350     if (!(hkey = get_special_root_hkey( hkey ))) return ERROR_INVALID_HANDLE;
1351
1352     total_size = info_size + (MAX_PATH + 1) * sizeof(WCHAR);
1353     if (data) total_size += *count;
1354     total_size = min( sizeof(buffer), total_size );
1355
1356     status = NtEnumerateValueKey( hkey, index, KeyValueFullInformation,
1357                                   buffer, total_size, &total_size );
1358     if (status && status != STATUS_BUFFER_OVERFLOW) goto done;
1359
1360     if (value || data)
1361     {
1362         /* retry with a dynamically allocated buffer */
1363         while (status == STATUS_BUFFER_OVERFLOW)
1364         {
1365             if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
1366             if (!(buf_ptr = HeapAlloc( GetProcessHeap(), 0, total_size )))
1367                 return ERROR_NOT_ENOUGH_MEMORY;
1368             info = (KEY_VALUE_FULL_INFORMATION *)buf_ptr;
1369             status = NtEnumerateValueKey( hkey, index, KeyValueFullInformation,
1370                                           buf_ptr, total_size, &total_size );
1371         }
1372
1373         if (status) goto done;
1374
1375         if (value)
1376         {
1377             if (info->NameLength/sizeof(WCHAR) >= *val_count)
1378             {
1379                 status = STATUS_BUFFER_OVERFLOW;
1380                 goto overflow;
1381             }
1382             memcpy( value, info->Name, info->NameLength );
1383             *val_count = info->NameLength / sizeof(WCHAR);
1384             value[*val_count] = 0;
1385         }
1386
1387         if (data)
1388         {
1389             if (total_size - info->DataOffset > *count)
1390             {
1391                 status = STATUS_BUFFER_OVERFLOW;
1392                 goto overflow;
1393             }
1394             memcpy( data, buf_ptr + info->DataOffset, total_size - info->DataOffset );
1395             if (total_size - info->DataOffset <= *count-sizeof(WCHAR) && is_string(info->Type))
1396             {
1397                 /* if the type is REG_SZ and data is not 0-terminated
1398                  * and there is enough space in the buffer NT appends a \0 */
1399                 WCHAR *ptr = (WCHAR *)(data + total_size - info->DataOffset);
1400                 if (ptr > (WCHAR *)data && ptr[-1]) *ptr = 0;
1401             }
1402         }
1403     }
1404     else status = STATUS_SUCCESS;
1405
1406  overflow:
1407     if (type) *type = info->Type;
1408     if (count) *count = info->DataLength;
1409
1410  done:
1411     if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
1412     return RtlNtStatusToDosError(status);
1413 }
1414
1415
1416 /******************************************************************************
1417  * RegEnumValueA   [ADVAPI32.@]
1418  *
1419  * see RegEnumValueW
1420  */
1421 DWORD WINAPI RegEnumValueA( HKEY hkey, DWORD index, LPSTR value, LPDWORD val_count,
1422                             LPDWORD reserved, LPDWORD type, LPBYTE data, LPDWORD count )
1423 {
1424     NTSTATUS status;
1425     DWORD total_size;
1426     char buffer[256], *buf_ptr = buffer;
1427     KEY_VALUE_FULL_INFORMATION *info = (KEY_VALUE_FULL_INFORMATION *)buffer;
1428     static const int info_size = offsetof( KEY_VALUE_FULL_INFORMATION, Name );
1429
1430     TRACE("(%p,%ld,%p,%p,%p,%p,%p,%p)\n",
1431           hkey, index, value, val_count, reserved, type, data, count );
1432
1433     /* NT only checks count, not val_count */
1434     if ((data && !count) || reserved) return ERROR_INVALID_PARAMETER;
1435     if (!(hkey = get_special_root_hkey( hkey ))) return ERROR_INVALID_HANDLE;
1436
1437     total_size = info_size + (MAX_PATH + 1) * sizeof(WCHAR);
1438     if (data) total_size += *count;
1439     total_size = min( sizeof(buffer), total_size );
1440
1441     status = NtEnumerateValueKey( hkey, index, KeyValueFullInformation,
1442                                   buffer, total_size, &total_size );
1443     if (status && status != STATUS_BUFFER_OVERFLOW) goto done;
1444
1445     /* we need to fetch the contents for a string type even if not requested,
1446      * because we need to compute the length of the ASCII string. */
1447     if (value || data || is_string(info->Type))
1448     {
1449         /* retry with a dynamically allocated buffer */
1450         while (status == STATUS_BUFFER_OVERFLOW)
1451         {
1452             if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
1453             if (!(buf_ptr = HeapAlloc( GetProcessHeap(), 0, total_size )))
1454                 return ERROR_NOT_ENOUGH_MEMORY;
1455             info = (KEY_VALUE_FULL_INFORMATION *)buf_ptr;
1456             status = NtEnumerateValueKey( hkey, index, KeyValueFullInformation,
1457                                           buf_ptr, total_size, &total_size );
1458         }
1459
1460         if (status) goto done;
1461
1462         if (is_string(info->Type))
1463         {
1464             DWORD len;
1465             RtlUnicodeToMultiByteSize( &len, (WCHAR *)(buf_ptr + info->DataOffset),
1466                                        total_size - info->DataOffset );
1467             if (data && len)
1468             {
1469                 if (len > *count) status = STATUS_BUFFER_OVERFLOW;
1470                 else
1471                 {
1472                     RtlUnicodeToMultiByteN( data, len, NULL, (WCHAR *)(buf_ptr + info->DataOffset),
1473                                             total_size - info->DataOffset );
1474                     /* if the type is REG_SZ and data is not 0-terminated
1475                      * and there is enough space in the buffer NT appends a \0 */
1476                     if (len < *count && data[len-1]) data[len] = 0;
1477                 }
1478             }
1479             info->DataLength = len;
1480         }
1481         else if (data)
1482         {
1483             if (total_size - info->DataOffset > *count) status = STATUS_BUFFER_OVERFLOW;
1484             else memcpy( data, buf_ptr + info->DataOffset, total_size - info->DataOffset );
1485         }
1486
1487         if (value && !status)
1488         {
1489             DWORD len;
1490
1491             RtlUnicodeToMultiByteSize( &len, info->Name, info->NameLength );
1492             if (len >= *val_count)
1493             {
1494                 status = STATUS_BUFFER_OVERFLOW;
1495                 if (*val_count)
1496                 {
1497                     len = *val_count - 1;
1498                     RtlUnicodeToMultiByteN( value, len, NULL, info->Name, info->NameLength );
1499                     value[len] = 0;
1500                 }
1501             }
1502             else
1503             {
1504                 RtlUnicodeToMultiByteN( value, len, NULL, info->Name, info->NameLength );
1505                 value[len] = 0;
1506                 *val_count = len;
1507             }
1508         }
1509     }
1510     else status = STATUS_SUCCESS;
1511
1512     if (type) *type = info->Type;
1513     if (count) *count = info->DataLength;
1514
1515  done:
1516     if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
1517     return RtlNtStatusToDosError(status);
1518 }
1519
1520
1521
1522 /******************************************************************************
1523  * RegDeleteValueW   [ADVAPI32.@]
1524  *
1525  * See RegDeleteValueA.
1526  */
1527 DWORD WINAPI RegDeleteValueW( HKEY hkey, LPCWSTR name )
1528 {
1529     UNICODE_STRING nameW;
1530
1531     if (!(hkey = get_special_root_hkey( hkey ))) return ERROR_INVALID_HANDLE;
1532
1533     RtlInitUnicodeString( &nameW, name );
1534     return RtlNtStatusToDosError( NtDeleteValueKey( hkey, &nameW ) );
1535 }
1536
1537
1538 /******************************************************************************
1539  * RegDeleteValueA   [ADVAPI32.@]
1540  *
1541  * Delete a value from the registry.
1542  *
1543  * PARAMS
1544  *  hkey [I] Registry handle of the key holding the value
1545  *  name [I] Name of the value under hkey to delete
1546  *
1547  * RETURNS
1548  *  Success: ERROR_SUCCESS
1549  *  Failure: nonzero error code from Winerror.h
1550  */
1551 DWORD WINAPI RegDeleteValueA( HKEY hkey, LPCSTR name )
1552 {
1553     STRING nameA;
1554     NTSTATUS status;
1555
1556     if (!(hkey = get_special_root_hkey( hkey ))) return ERROR_INVALID_HANDLE;
1557
1558     RtlInitAnsiString( &nameA, name );
1559     if (!(status = RtlAnsiStringToUnicodeString( &NtCurrentTeb()->StaticUnicodeString,
1560                                                  &nameA, FALSE )))
1561         status = NtDeleteValueKey( hkey, &NtCurrentTeb()->StaticUnicodeString );
1562     return RtlNtStatusToDosError( status );
1563 }
1564
1565
1566 /******************************************************************************
1567  * RegLoadKeyW   [ADVAPI32.@]
1568  *
1569  * PARAMS
1570  *  hkey      [I] Handle of open key
1571  *  subkey    [I] Address of name of subkey
1572  *  filename  [I] Address of filename for registry information
1573  *
1574  * RETURNS
1575  *  Success: ERROR_SUCCES
1576  *  Failure: nonzero error code from Winerror.h
1577  */
1578 LONG WINAPI RegLoadKeyW( HKEY hkey, LPCWSTR subkey, LPCWSTR filename )
1579 {
1580     HANDLE file;
1581     DWORD ret, len, err = GetLastError();
1582     HKEY shkey;
1583
1584     TRACE( "(%p,%s,%s)\n", hkey, debugstr_w(subkey), debugstr_w(filename) );
1585
1586     if (!filename || !*filename) return ERROR_INVALID_PARAMETER;
1587     if (!subkey || !*subkey) return ERROR_INVALID_PARAMETER;
1588     if (!(hkey = get_special_root_hkey( hkey ))) return ERROR_INVALID_HANDLE;
1589
1590     len = strlenW( subkey ) * sizeof(WCHAR);
1591     if (len > MAX_PATH*sizeof(WCHAR)) return ERROR_INVALID_PARAMETER;
1592
1593     if ((file = CreateFileW( filename, GENERIC_READ, 0, NULL, OPEN_EXISTING,
1594                              FILE_ATTRIBUTE_NORMAL, 0 )) == INVALID_HANDLE_VALUE)
1595     {
1596         ret = GetLastError();
1597         goto done;
1598     }
1599
1600     RegCreateKeyW(hkey,subkey,&shkey);
1601
1602     SERVER_START_REQ( load_registry )
1603     {
1604         req->hkey  = shkey;
1605         req->file  = file;
1606         wine_server_add_data( req, subkey, len );
1607         ret = RtlNtStatusToDosError( wine_server_call(req) );
1608     }
1609     SERVER_END_REQ;
1610     CloseHandle( file );
1611     RegCloseKey(shkey);
1612
1613  done:
1614     SetLastError( err );  /* restore the last error code */
1615     return ret;
1616 }
1617
1618
1619 /******************************************************************************
1620  * RegLoadKeyA   [ADVAPI32.@]
1621  *
1622  * see RegLoadKeyW
1623  */
1624 LONG WINAPI RegLoadKeyA( HKEY hkey, LPCSTR subkey, LPCSTR filename )
1625 {
1626     WCHAR buffer[MAX_PATH];
1627     HANDLE file;
1628     DWORD ret, len, err = GetLastError();
1629     HKEY shkey;
1630
1631     TRACE( "(%p,%s,%s)\n", hkey, debugstr_a(subkey), debugstr_a(filename) );
1632
1633     if (!filename || !*filename) return ERROR_INVALID_PARAMETER;
1634     if (!subkey || !*subkey) return ERROR_INVALID_PARAMETER;
1635     if (!(hkey = get_special_root_hkey( hkey ))) return ERROR_INVALID_HANDLE;
1636
1637     if (!(len = MultiByteToWideChar( CP_ACP, 0, subkey, strlen(subkey), buffer, MAX_PATH )))
1638         return ERROR_INVALID_PARAMETER;
1639
1640     if ((file = CreateFileA( filename, GENERIC_READ, 0, NULL, OPEN_EXISTING,
1641                              FILE_ATTRIBUTE_NORMAL, 0 )) == INVALID_HANDLE_VALUE)
1642     {
1643         ret = GetLastError();
1644         goto done;
1645     }
1646
1647     RegCreateKeyA(hkey,subkey,&shkey);
1648
1649     SERVER_START_REQ( load_registry )
1650     {
1651         req->hkey  = shkey;
1652         req->file  = file;
1653         wine_server_add_data( req, buffer, len * sizeof(WCHAR) );
1654         ret = RtlNtStatusToDosError( wine_server_call(req) );
1655     }
1656     SERVER_END_REQ;
1657     CloseHandle( file );
1658     RegCloseKey(shkey);
1659
1660  done:
1661     SetLastError( err );  /* restore the last error code */
1662     return ret;
1663 }
1664
1665
1666 /******************************************************************************
1667  * RegSaveKeyW   [ADVAPI32.@]
1668  *
1669  * PARAMS
1670  *  hkey   [I] Handle of key where save begins
1671  *  lpFile [I] Address of filename to save to
1672  *  sa     [I] Address of security structure
1673  *
1674  * RETURNS
1675  *  Success: ERROR_SUCCESS
1676  *  Failure: nonzero error code from Winerror.h
1677  */
1678 LONG WINAPI RegSaveKeyW( HKEY hkey, LPCWSTR file, LPSECURITY_ATTRIBUTES sa )
1679 {
1680     static const WCHAR format[] =
1681         {'r','e','g','%','0','4','x','.','t','m','p',0};
1682     WCHAR buffer[MAX_PATH];
1683     int count = 0;
1684     LPWSTR nameW;
1685     DWORD ret, err;
1686     HANDLE handle;
1687
1688     TRACE( "(%p,%s,%p)\n", hkey, debugstr_w(file), sa );
1689
1690     if (!file || !*file) return ERROR_INVALID_PARAMETER;
1691     if (!(hkey = get_special_root_hkey( hkey ))) return ERROR_INVALID_HANDLE;
1692
1693     err = GetLastError();
1694     GetFullPathNameW( file, sizeof(buffer)/sizeof(WCHAR), buffer, &nameW );
1695
1696     for (;;)
1697     {
1698         snprintfW( nameW, 16, format, count++ );
1699         handle = CreateFileW( buffer, GENERIC_WRITE, 0, NULL,
1700                             CREATE_NEW, FILE_ATTRIBUTE_NORMAL, 0 );
1701         if (handle != INVALID_HANDLE_VALUE) break;
1702         if ((ret = GetLastError()) != ERROR_ALREADY_EXISTS) goto done;
1703
1704         /* Something gone haywire ? Please report if this happens abnormally */
1705         if (count >= 100)
1706             MESSAGE("Wow, we are already fiddling with a temp file %s with an ordinal as high as %d !\nYou might want to delete all corresponding temp files in that directory.\n", debugstr_w(buffer), count);
1707     }
1708
1709     SERVER_START_REQ( save_registry )
1710     {
1711         req->hkey = hkey;
1712         req->file = handle;
1713         ret = RtlNtStatusToDosError( wine_server_call( req ) );
1714     }
1715     SERVER_END_REQ;
1716
1717     CloseHandle( handle );
1718     if (!ret)
1719     {
1720         if (!MoveFileExW( buffer, file, MOVEFILE_REPLACE_EXISTING ))
1721         {
1722             ERR( "Failed to move %s to %s\n", debugstr_w(buffer),
1723                 debugstr_w(file) );
1724             ret = GetLastError();
1725         }
1726     }
1727     if (ret) DeleteFileW( buffer );
1728
1729 done:
1730     SetLastError( err );  /* restore last error code */
1731     return ret;
1732 }
1733
1734
1735 /******************************************************************************
1736  * RegSaveKeyA  [ADVAPI32.@]
1737  *
1738  * see RegSaveKeyW
1739  */
1740 LONG WINAPI RegSaveKeyA( HKEY hkey, LPCSTR file, LPSECURITY_ATTRIBUTES sa )
1741 {
1742     UNICODE_STRING *fileW = &NtCurrentTeb()->StaticUnicodeString;
1743     NTSTATUS status;
1744     STRING fileA;
1745
1746     RtlInitAnsiString(&fileA, file);
1747     if ((status = RtlAnsiStringToUnicodeString(fileW, &fileA, FALSE)))
1748         return RtlNtStatusToDosError( status );
1749     return RegSaveKeyW(hkey, fileW->Buffer, sa);
1750 }
1751
1752
1753 /******************************************************************************
1754  * RegRestoreKeyW [ADVAPI32.@]
1755  *
1756  * PARAMS
1757  *  hkey    [I] Handle of key where restore begins
1758  *  lpFile  [I] Address of filename containing saved tree
1759  *  dwFlags [I] Optional flags
1760  *
1761  * RETURNS
1762  *  Success: ERROR_SUCCESS
1763  *  Failure: nonzero error code from Winerror.h
1764  */
1765 LONG WINAPI RegRestoreKeyW( HKEY hkey, LPCWSTR lpFile, DWORD dwFlags )
1766 {
1767     TRACE("(%p,%s,%ld)\n",hkey,debugstr_w(lpFile),dwFlags);
1768
1769     /* It seems to do this check before the hkey check */
1770     if (!lpFile || !*lpFile)
1771         return ERROR_INVALID_PARAMETER;
1772
1773     FIXME("(%p,%s,%ld): stub\n",hkey,debugstr_w(lpFile),dwFlags);
1774
1775     /* Check for file existence */
1776
1777     return ERROR_SUCCESS;
1778 }
1779
1780
1781 /******************************************************************************
1782  * RegRestoreKeyA [ADVAPI32.@]
1783  *
1784  * see RegRestoreKeyW
1785  */
1786 LONG WINAPI RegRestoreKeyA( HKEY hkey, LPCSTR lpFile, DWORD dwFlags )
1787 {
1788     UNICODE_STRING lpFileW;
1789     LONG ret;
1790
1791     RtlCreateUnicodeStringFromAsciiz( &lpFileW, lpFile );
1792     ret = RegRestoreKeyW( hkey, lpFileW.Buffer, dwFlags );
1793     RtlFreeUnicodeString( &lpFileW );
1794     return ret;
1795 }
1796
1797
1798 /******************************************************************************
1799  * RegUnLoadKeyW [ADVAPI32.@]
1800  *
1801  * PARAMS
1802  *  hkey     [I] Handle of open key
1803  *  lpSubKey [I] Address of name of subkey to unload
1804  *
1805  * RETURNS
1806  *  Success: ERROR_SUCCESS
1807  *  Failure: nonzero error code from Winerror.h
1808  */
1809 LONG WINAPI RegUnLoadKeyW( HKEY hkey, LPCWSTR lpSubKey )
1810 {
1811     DWORD ret;
1812     HKEY shkey;
1813
1814     TRACE("(%p,%s)\n",hkey, debugstr_w(lpSubKey));
1815
1816     ret = RegOpenKeyW(hkey,lpSubKey,&shkey);
1817     if( ret )
1818         return ERROR_INVALID_PARAMETER;
1819
1820     SERVER_START_REQ( unload_registry )
1821     {
1822         req->hkey  = shkey;
1823         ret = RtlNtStatusToDosError( wine_server_call(req) );
1824     }
1825     SERVER_END_REQ;
1826     RegCloseKey(shkey);
1827
1828     return ret;
1829 }
1830
1831
1832 /******************************************************************************
1833  * RegUnLoadKeyA [ADVAPI32.@]
1834  *
1835  * see RegUnLoadKeyW
1836  */
1837 LONG WINAPI RegUnLoadKeyA( HKEY hkey, LPCSTR lpSubKey )
1838 {
1839     UNICODE_STRING lpSubKeyW;
1840     LONG ret;
1841
1842     RtlCreateUnicodeStringFromAsciiz( &lpSubKeyW, lpSubKey );
1843     ret = RegUnLoadKeyW( hkey, lpSubKeyW.Buffer );
1844     RtlFreeUnicodeString( &lpSubKeyW );
1845     return ret;
1846 }
1847
1848
1849 /******************************************************************************
1850  * RegReplaceKeyW [ADVAPI32.@]
1851  *
1852  * PARAMS
1853  *  hkey      [I] Handle of open key
1854  *  lpSubKey  [I] Address of name of subkey
1855  *  lpNewFile [I] Address of filename for file with new data
1856  *  lpOldFile [I] Address of filename for backup file
1857  *
1858  * RETURNS
1859  *  Success: ERROR_SUCCESS
1860  *  Failure: nonzero error code from Winerror.h
1861  */
1862 LONG WINAPI RegReplaceKeyW( HKEY hkey, LPCWSTR lpSubKey, LPCWSTR lpNewFile,
1863                               LPCWSTR lpOldFile )
1864 {
1865     FIXME("(%p,%s,%s,%s): stub\n", hkey, debugstr_w(lpSubKey),
1866           debugstr_w(lpNewFile),debugstr_w(lpOldFile));
1867     return ERROR_SUCCESS;
1868 }
1869
1870
1871 /******************************************************************************
1872  * RegReplaceKeyA [ADVAPI32.@]
1873  *
1874  * see RegReplaceKeyW
1875  */
1876 LONG WINAPI RegReplaceKeyA( HKEY hkey, LPCSTR lpSubKey, LPCSTR lpNewFile,
1877                               LPCSTR lpOldFile )
1878 {
1879     UNICODE_STRING lpSubKeyW;
1880     UNICODE_STRING lpNewFileW;
1881     UNICODE_STRING lpOldFileW;
1882     LONG ret;
1883
1884     RtlCreateUnicodeStringFromAsciiz( &lpSubKeyW, lpSubKey );
1885     RtlCreateUnicodeStringFromAsciiz( &lpOldFileW, lpOldFile );
1886     RtlCreateUnicodeStringFromAsciiz( &lpNewFileW, lpNewFile );
1887     ret = RegReplaceKeyW( hkey, lpSubKeyW.Buffer, lpNewFileW.Buffer, lpOldFileW.Buffer );
1888     RtlFreeUnicodeString( &lpOldFileW );
1889     RtlFreeUnicodeString( &lpNewFileW );
1890     RtlFreeUnicodeString( &lpSubKeyW );
1891     return ret;
1892 }
1893
1894
1895 /******************************************************************************
1896  * RegSetKeySecurity [ADVAPI32.@]
1897  *
1898  * PARAMS
1899  *  hkey          [I] Open handle of key to set
1900  *  SecurityInfo  [I] Descriptor contents
1901  *  pSecurityDesc [I] Address of descriptor for key
1902  *
1903  * RETURNS
1904  *  Success: ERROR_SUCCESS
1905  *  Failure: nonzero error code from Winerror.h
1906  */
1907 LONG WINAPI RegSetKeySecurity( HKEY hkey, SECURITY_INFORMATION SecurityInfo,
1908                                PSECURITY_DESCRIPTOR pSecurityDesc )
1909 {
1910     TRACE("(%p,%ld,%p)\n",hkey,SecurityInfo,pSecurityDesc);
1911
1912     /* It seems to perform this check before the hkey check */
1913     if ((SecurityInfo & OWNER_SECURITY_INFORMATION) ||
1914         (SecurityInfo & GROUP_SECURITY_INFORMATION) ||
1915         (SecurityInfo & DACL_SECURITY_INFORMATION) ||
1916         (SecurityInfo & SACL_SECURITY_INFORMATION)) {
1917         /* Param OK */
1918     } else
1919         return ERROR_INVALID_PARAMETER;
1920
1921     if (!pSecurityDesc)
1922         return ERROR_INVALID_PARAMETER;
1923
1924     FIXME(":(%p,%ld,%p): stub\n",hkey,SecurityInfo,pSecurityDesc);
1925
1926     return ERROR_SUCCESS;
1927 }
1928
1929
1930 /******************************************************************************
1931  * RegGetKeySecurity [ADVAPI32.@]
1932  *
1933  * Get a copy of the security descriptor for a given registry key.
1934  *
1935  * PARAMS
1936  *  hkey                   [I]   Open handle of key to set
1937  *  SecurityInformation    [I]   Descriptor contents
1938  *  pSecurityDescriptor    [O]   Address of descriptor for key
1939  *  lpcbSecurityDescriptor [I/O] Address of size of buffer and description
1940  *
1941  * RETURNS
1942  *  Success: ERROR_SUCCESS
1943  *  Failure: Error code
1944  */
1945 LONG WINAPI RegGetKeySecurity( HKEY hkey, SECURITY_INFORMATION SecurityInformation,
1946                                PSECURITY_DESCRIPTOR pSecurityDescriptor,
1947                                LPDWORD lpcbSecurityDescriptor )
1948 {
1949     TRACE("(%p,%ld,%p,%ld)\n",hkey,SecurityInformation,pSecurityDescriptor,
1950           lpcbSecurityDescriptor?*lpcbSecurityDescriptor:0);
1951
1952     /* FIXME: Check for valid SecurityInformation values */
1953
1954     if (*lpcbSecurityDescriptor < sizeof(SECURITY_DESCRIPTOR))
1955         return ERROR_INSUFFICIENT_BUFFER;
1956
1957     FIXME("(%p,%ld,%p,%ld): stub\n",hkey,SecurityInformation,
1958           pSecurityDescriptor,lpcbSecurityDescriptor?*lpcbSecurityDescriptor:0);
1959
1960     /* Do not leave security descriptor filled with garbage */
1961     RtlCreateSecurityDescriptor(pSecurityDescriptor, SECURITY_DESCRIPTOR_REVISION);
1962
1963     return ERROR_SUCCESS;
1964 }
1965
1966
1967 /******************************************************************************
1968  * RegFlushKey [ADVAPI32.@]
1969  *
1970  * Immediately write a registry key to registry.
1971  *
1972  * PARAMS
1973  *  hkey [I] Handle of key to write
1974  *
1975  * RETURNS
1976  *  Success: ERROR_SUCCESS
1977  *  Failure: Error code
1978  */
1979 DWORD WINAPI RegFlushKey( HKEY hkey )
1980 {
1981     hkey = get_special_root_hkey( hkey );
1982     if (!hkey) return ERROR_INVALID_HANDLE;
1983
1984     return RtlNtStatusToDosError( NtFlushKey( hkey ) );
1985 }
1986
1987
1988 /******************************************************************************
1989  * RegConnectRegistryW [ADVAPI32.@]
1990  *
1991  * PARAMS
1992  *  lpMachineName [I] Address of name of remote computer
1993  *  hHey          [I] Predefined registry handle
1994  *  phkResult     [I] Address of buffer for remote registry handle
1995  *
1996  * RETURNS
1997  *  Success: ERROR_SUCCESS
1998  *  Failure: nonzero error code from Winerror.h
1999  */
2000 LONG WINAPI RegConnectRegistryW( LPCWSTR lpMachineName, HKEY hKey,
2001                                    PHKEY phkResult )
2002 {
2003     LONG ret;
2004
2005     TRACE("(%s,%p,%p): stub\n",debugstr_w(lpMachineName),hKey,phkResult);
2006
2007     if (!lpMachineName || !*lpMachineName) {
2008         /* Use the local machine name */
2009         ret = RegOpenKeyW( hKey, NULL, phkResult );
2010     }
2011     else if (lpMachineName[0] != '\\' || lpMachineName[1] != '\\')
2012         ret = ERROR_BAD_NETPATH;
2013     else
2014     {
2015         WCHAR compName[MAX_COMPUTERNAME_LENGTH + 1];
2016         DWORD len = sizeof(compName) / sizeof(WCHAR);
2017
2018         if (GetComputerNameW(compName, &len))
2019         {
2020             if (!strcmpiW(lpMachineName + 2, compName))
2021                 ret = RegOpenKeyW(hKey, NULL, phkResult);
2022             else
2023             {
2024                 FIXME("Cannot connect to %s\n",debugstr_w(lpMachineName));
2025                 ret = ERROR_BAD_NETPATH;
2026             }
2027         }
2028         else
2029             ret = GetLastError();
2030     }
2031     return ret;
2032 }
2033
2034
2035 /******************************************************************************
2036  * RegConnectRegistryA [ADVAPI32.@]
2037  *
2038  * see RegConnectRegistryW
2039  */
2040 LONG WINAPI RegConnectRegistryA( LPCSTR machine, HKEY hkey, PHKEY reskey )
2041 {
2042     UNICODE_STRING machineW;
2043     LONG ret;
2044
2045     RtlCreateUnicodeStringFromAsciiz( &machineW, machine );
2046     ret = RegConnectRegistryW( machineW.Buffer, hkey, reskey );
2047     RtlFreeUnicodeString( &machineW );
2048     return ret;
2049 }
2050
2051
2052 /******************************************************************************
2053  * RegNotifyChangeKeyValue [ADVAPI32.@]
2054  *
2055  * PARAMS
2056  *  hkey            [I] Handle of key to watch
2057  *  fWatchSubTree   [I] Flag for subkey notification
2058  *  fdwNotifyFilter [I] Changes to be reported
2059  *  hEvent          [I] Handle of signaled event
2060  *  fAsync          [I] Flag for asynchronous reporting
2061  *
2062  * RETURNS
2063  *  Success: ERROR_SUCCESS
2064  *  Failure: nonzero error code from Winerror.h
2065  */
2066 LONG WINAPI RegNotifyChangeKeyValue( HKEY hkey, BOOL fWatchSubTree,
2067                                      DWORD fdwNotifyFilter, HANDLE hEvent,
2068                                      BOOL fAsync )
2069 {
2070     LONG ret;
2071
2072     TRACE("(%p,%i,%ld,%p,%i)\n",hkey,fWatchSubTree,fdwNotifyFilter,
2073           hEvent,fAsync);
2074
2075     if( !fAsync )
2076         hEvent = CreateEventA(NULL, 0, 0, NULL);
2077
2078     SERVER_START_REQ( set_registry_notification )
2079     {
2080         req->hkey    = hkey;
2081         req->event   = hEvent;
2082         req->subtree = fWatchSubTree;
2083         req->filter  = fdwNotifyFilter;
2084         ret = RtlNtStatusToDosError( wine_server_call(req) );
2085     }
2086     SERVER_END_REQ;
2087
2088     if( !fAsync )
2089     {
2090         if( ret == ERROR_SUCCESS )
2091             WaitForSingleObject( hEvent, INFINITE );
2092         CloseHandle( hEvent );
2093     }
2094
2095     return ret;
2096 }
2097
2098 /******************************************************************************
2099  * RegOpenUserClassesRoot [ADVAPI32.@]
2100  *
2101  * Open the HKEY_CLASSES_ROOT key for a user.
2102  *
2103  * PARAMS
2104  *  hToken     [I] Handle of token representing the user
2105  *  dwOptions  [I] Reserved, nust be 0
2106  *  samDesired [I] Desired access rights
2107  *  phkResult  [O] Destination for the resulting key handle
2108  *
2109  * RETURNS
2110  *  Success: ERROR_SUCCESS
2111  *  Failure: nonzero error code from Winerror.h
2112  *
2113  * NOTES
2114  *  On Windows 2000 and upwards the HKEY_CLASSES_ROOT key is a view of the
2115  *  "HKEY_LOCAL_MACHINE\Software\Classes" and the
2116  *  "HKEY_CURRENT_USER\Software\Classes" keys merged together.
2117  */
2118 LONG WINAPI RegOpenUserClassesRoot(
2119     HANDLE hToken,
2120     DWORD dwOptions,
2121     REGSAM samDesired,
2122     PHKEY phkResult
2123 )
2124 {
2125     FIXME("(%p, 0x%lx, 0x%lx, %p) semi-stub\n", hToken, dwOptions, samDesired, phkResult);
2126
2127     *phkResult = HKEY_CLASSES_ROOT;
2128     return ERROR_SUCCESS;
2129 }