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