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
  15 #include <stdlib.h>
  16 #include <stdio.h>
  17 #include <unistd.h>
  18
  19 #include "winbase.h"
  20 #include "winreg.h"
  21 #include "winerror.h"
  22 #include "wine/unicode.h"
  23 #include "heap.h"
  24 #include "server.h"
  25 #include "debugtools.h"
  26
  27 DEFAULT_DEBUG_CHANNEL(reg);
  28
  29
  30 /* check if value type needs string conversion (Ansi<->Unicode) */
  31 static inline int is_string( DWORD type )
  32 {
  33     return (type == REG_SZ) || (type == REG_EXPAND_SZ) || (type == REG_MULTI_SZ);
  34 }
  35
  36
  37 /******************************************************************************
  38  *           RegCreateKeyExW   [ADVAPI32.@]
  39  *
  40  * PARAMS
  41  *    hkey       [I] Handle of an open key
  42  *    name       [I] Address of subkey name
  43  *    reserved   [I] Reserved - must be 0
  44  *    class      [I] Address of class string
  45  *    options    [I] Special options flag
  46  *    access     [I] Desired security access
  47  *    sa         [I] Address of key security structure
  48  *    retkey     [O] Address of buffer for opened handle
  49  *    dispos     [O] Receives REG_CREATED_NEW_KEY or REG_OPENED_EXISTING_KEY
  50  *
  51  * NOTES
  52  *  in case of failing retkey remains untouched
  53  */
  54 DWORD WINAPI RegCreateKeyExW( HKEY hkey, LPCWSTR name, DWORD reserved, LPWSTR class,
  55                               DWORD options, REGSAM access, SECURITY_ATTRIBUTES *sa,
  56                               LPHKEY retkey, LPDWORD dispos )
  57 {
  58     OBJECT_ATTRIBUTES attr;
  59     UNICODE_STRING nameW, classW;
  60
  61     if (reserved) return ERROR_INVALID_PARAMETER;
  62     if (!(access & KEY_ALL_ACCESS) || (access & ~KEY_ALL_ACCESS)) return ERROR_ACCESS_DENIED;
  63
  64     attr.Length = sizeof(attr);
  65     attr.RootDirectory = hkey;
  66     attr.ObjectName = &nameW;
  67     attr.Attributes = 0;
  68     attr.SecurityDescriptor = NULL;
  69     attr.SecurityQualityOfService = NULL;
  70     RtlInitUnicodeString( &nameW, name );
  71     RtlInitUnicodeString( &classW, class );
  72
  73     return RtlNtStatusToDosError( NtCreateKey( retkey, access, &attr, 0,
  74                                                &classW, options, dispos ) );
  75 }
  76
  77
  78 /******************************************************************************
  79  *           RegCreateKeyExA   [ADVAPI32.@]
  80  */
  81 DWORD WINAPI RegCreateKeyExA( HKEY hkey, LPCSTR name, DWORD reserved, LPSTR class,
  82                               DWORD options, REGSAM access, SECURITY_ATTRIBUTES *sa,
  83                               LPHKEY retkey, LPDWORD dispos )
  84 {
  85     OBJECT_ATTRIBUTES attr;
  86     UNICODE_STRING classW;
  87     ANSI_STRING nameA, classA;
  88     NTSTATUS status;
  89
  90     if (reserved) return ERROR_INVALID_PARAMETER;
  91     if (!(access & KEY_ALL_ACCESS) || (access & ~KEY_ALL_ACCESS)) return ERROR_ACCESS_DENIED;
  92
  93     attr.Length = sizeof(attr);
  94     attr.RootDirectory = hkey;
  95     attr.ObjectName = &NtCurrentTeb()->StaticUnicodeString;
  96     attr.Attributes = 0;
  97     attr.SecurityDescriptor = NULL;
  98     attr.SecurityQualityOfService = NULL;
  99     RtlInitAnsiString( &nameA, name );
 100     RtlInitAnsiString( &classA, class );
 101
 102     if (!(status = RtlAnsiStringToUnicodeString( &NtCurrentTeb()->StaticUnicodeString,
 103                                                  &nameA, FALSE )))
 104     {
 105         if (!(status = RtlAnsiStringToUnicodeString( &classW, &classA, TRUE )))
 106         {
 107             status = NtCreateKey( retkey, access, &attr, 0, &classW, options, dispos );
 108             RtlFreeUnicodeString( &classW );
 109         }
 110     }
 111     return RtlNtStatusToDosError( status );
 112 }
 113
 114
 115 /******************************************************************************
 116  *           RegCreateKeyW   [ADVAPI32.@]
 117  */
 118 DWORD WINAPI RegCreateKeyW( HKEY hkey, LPCWSTR name, LPHKEY retkey )
 119 {
 120     /* FIXME: previous implementation converted ERROR_INVALID_HANDLE to ERROR_BADKEY, */
 121     /* but at least my version of NT (4.0 SP5) doesn't do this.  -- AJ */
 122     return RegCreateKeyExW( hkey, name, 0, NULL, REG_OPTION_NON_VOLATILE,
 123                             KEY_ALL_ACCESS, NULL, retkey, NULL );
 124 }
 125
 126
 127 /******************************************************************************
 128  *           RegCreateKeyA   [ADVAPI32.@]
 129  */
 130 DWORD WINAPI RegCreateKeyA( HKEY hkey, LPCSTR name, LPHKEY retkey )
 131 {
 132     return RegCreateKeyExA( hkey, name, 0, NULL, REG_OPTION_NON_VOLATILE,
 133                             KEY_ALL_ACCESS, NULL, retkey, NULL );
 134 }
 135
 136
 137
 138 /******************************************************************************
 139  *           RegOpenKeyExW   [ADVAPI32.@]
 140  *
 141  * Opens the specified key
 142  *
 143  * Unlike RegCreateKeyEx, this does not create the key if it does not exist.
 144  *
 145  * PARAMS
 146  *    hkey       [I] Handle of open key
 147  *    name       [I] Name of subkey to open
 148  *    reserved   [I] Reserved - must be zero
 149  *    access     [I] Security access mask
 150  *    retkey     [O] Handle to open key
 151  *
 152  * RETURNS
 153  *    Success: ERROR_SUCCESS
 154  *    Failure: Error code
 155  *
 156  * NOTES
 157  *  in case of failing is retkey = 0
 158  */
 159 DWORD WINAPI RegOpenKeyExW( HKEY hkey, LPCWSTR name, DWORD reserved, REGSAM access, LPHKEY retkey )
 160 {
 161     OBJECT_ATTRIBUTES attr;
 162     UNICODE_STRING nameW;
 163
 164     attr.Length = sizeof(attr);
 165     attr.RootDirectory = hkey;
 166     attr.ObjectName = &nameW;
 167     attr.Attributes = 0;
 168     attr.SecurityDescriptor = NULL;
 169     attr.SecurityQualityOfService = NULL;
 170     RtlInitUnicodeString( &nameW, name );
 171     return RtlNtStatusToDosError( NtOpenKey( retkey, access, &attr ) );
 172 }
 173
 174
 175 /******************************************************************************
 176  *           RegOpenKeyExA   [ADVAPI32.@]
 177  */
 178 DWORD WINAPI RegOpenKeyExA( HKEY hkey, LPCSTR name, DWORD reserved, REGSAM access, LPHKEY retkey )
 179 {
 180     OBJECT_ATTRIBUTES attr;
 181     STRING nameA;
 182     NTSTATUS status;
 183
 184     attr.Length = sizeof(attr);
 185     attr.RootDirectory = hkey;
 186     attr.ObjectName = &NtCurrentTeb()->StaticUnicodeString;
 187     attr.Attributes = 0;
 188     attr.SecurityDescriptor = NULL;
 189     attr.SecurityQualityOfService = NULL;
 190
 191     RtlInitAnsiString( &nameA, name );
 192     if (!(status = RtlAnsiStringToUnicodeString( &NtCurrentTeb()->StaticUnicodeString,
 193                                                  &nameA, FALSE )))
 194     {
 195         status = NtOpenKey( retkey, access, &attr );
 196     }
 197     return RtlNtStatusToDosError( status );
 198 }
 199
 200
 201 /******************************************************************************
 202  *           RegOpenKeyW   [ADVAPI32.@]
 203  *
 204  * PARAMS
 205  *    hkey    [I] Handle of open key
 206  *    name    [I] Address of name of subkey to open
 207  *    retkey  [O] Handle to open key
 208  *
 209  * RETURNS
 210  *    Success: ERROR_SUCCESS
 211  *    Failure: Error code
 212  *
 213  * NOTES
 214  *  in case of failing is retkey = 0
 215  */
 216 DWORD WINAPI RegOpenKeyW( HKEY hkey, LPCWSTR name, LPHKEY retkey )
 217 {
 218     return RegOpenKeyExW( hkey, name, 0, KEY_ALL_ACCESS, retkey );
 219 }
 220
 221
 222 /******************************************************************************
 223  *           RegOpenKeyA   [ADVAPI32.@]
 224  */
 225 DWORD WINAPI RegOpenKeyA( HKEY hkey, LPCSTR name, LPHKEY retkey )
 226 {
 227     return RegOpenKeyExA( hkey, name, 0, KEY_ALL_ACCESS, retkey );
 228 }
 229
 230
 231 /******************************************************************************
 232  *           RegOpenCurrentUser   [ADVAPI32.@]
 233  * FIXME: This function is supposed to retrieve a handle to the
 234  * HKEY_CURRENT_USER for the user the current thread is impersonating.
 235  * Since Wine does not currently allow threads to impersonate other users,
 236  * this stub should work fine.
 237  */
 238 DWORD WINAPI RegOpenCurrentUser( REGSAM access, PHKEY retkey )
 239 {
 240     return RegOpenKeyExA( HKEY_CURRENT_USER, "", 0, access, retkey );
 241 }
 242
 243
 244
 245 /******************************************************************************
 246  *           RegEnumKeyExW   [ADVAPI32.@]
 247  *
 248  * PARAMS
 249  *    hkey         [I] Handle to key to enumerate
 250  *    index        [I] Index of subkey to enumerate
 251  *    name         [O] Buffer for subkey name
 252  *    name_len     [O] Size of subkey buffer
 253  *    reserved     [I] Reserved
 254  *    class        [O] Buffer for class string
 255  *    class_len    [O] Size of class buffer
 256  *    ft           [O] Time key last written to
 257  */
 258 DWORD WINAPI RegEnumKeyExW( HKEY hkey, DWORD index, LPWSTR name, LPDWORD name_len,
 259                             LPDWORD reserved, LPWSTR class, LPDWORD class_len, FILETIME *ft )
 260 {
 261     NTSTATUS status;
 262     char buffer[256], *buf_ptr = buffer;
 263     KEY_NODE_INFORMATION *info = (KEY_NODE_INFORMATION *)buffer;
 264     DWORD total_size;
 265
 266     TRACE( "(0x%x,%ld,%p,%p(%ld),%p,%p,%p,%p)\n", hkey, index, name, name_len,
 267            name_len ? *name_len : -1, reserved, class, class_len, ft );
 268
 269     if (reserved) return ERROR_INVALID_PARAMETER;
 270
 271     status = NtEnumerateKey( hkey, index, KeyNodeInformation,
 272                              buffer, sizeof(buffer), &total_size );
 273
 274     while (status == STATUS_BUFFER_OVERFLOW)
 275     {
 276         /* retry with a dynamically allocated buffer */
 277         if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
 278         if (!(buf_ptr = HeapAlloc( GetProcessHeap(), 0, total_size )))
 279             return ERROR_NOT_ENOUGH_MEMORY;
 280         info = (KEY_NODE_INFORMATION *)buf_ptr;
 281         status = NtEnumerateKey( hkey, index, KeyNodeInformation,
 282                                  buf_ptr, total_size, &total_size );
 283     }
 284
 285     if (!status)
 286     {
 287         DWORD len = info->NameLength / sizeof(WCHAR);
 288         DWORD cls_len = info->ClassLength / sizeof(WCHAR);
 289
 290         if (ft) *ft = info->LastWriteTime;
 291
 292         if (len >= *name_len || (class_len && (cls_len >= *class_len)))
 293             status = STATUS_BUFFER_OVERFLOW;
 294         else
 295         {
 296             *name_len = len;
 297             memcpy( name, info->Name, info->NameLength );
 298             name[len] = 0;
 299             if (class_len)
 300             {
 301                 *class_len = cls_len;
 302                 if (class)
 303                 {
 304                     memcpy( class, buf_ptr + info->ClassOffset, info->ClassLength );
 305                     class[cls_len] = 0;
 306                 }
 307             }
 308         }
 309     }
 310
 311     if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
 312     return RtlNtStatusToDosError( status );
 313 }
 314
 315
 316 /******************************************************************************
 317  *           RegEnumKeyExA   [ADVAPI32.@]
 318  */
 319 DWORD WINAPI RegEnumKeyExA( HKEY hkey, DWORD index, LPSTR name, LPDWORD name_len,
 320                             LPDWORD reserved, LPSTR class, LPDWORD class_len, FILETIME *ft )
 321 {
 322     NTSTATUS status;
 323     char buffer[256], *buf_ptr = buffer;
 324     KEY_NODE_INFORMATION *info = (KEY_NODE_INFORMATION *)buffer;
 325     DWORD total_size;
 326
 327     TRACE( "(0x%x,%ld,%p,%p(%ld),%p,%p,%p,%p)\n", hkey, index, name, name_len,
 328            name_len ? *name_len : -1, reserved, class, class_len, ft );
 329
 330     if (reserved) return ERROR_INVALID_PARAMETER;
 331
 332     status = NtEnumerateKey( hkey, index, KeyNodeInformation,
 333                              buffer, sizeof(buffer), &total_size );
 334
 335     while (status == STATUS_BUFFER_OVERFLOW)
 336     {
 337         /* retry with a dynamically allocated buffer */
 338         if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
 339         if (!(buf_ptr = HeapAlloc( GetProcessHeap(), 0, total_size )))
 340             return ERROR_NOT_ENOUGH_MEMORY;
 341         info = (KEY_NODE_INFORMATION *)buf_ptr;
 342         status = NtEnumerateKey( hkey, index, KeyNodeInformation,
 343                                  buf_ptr, total_size, &total_size );
 344     }
 345
 346     if (!status)
 347     {
 348         DWORD len = WideCharToMultiByte( CP_ACP, 0, info->Name, info->NameLength/sizeof(WCHAR),
 349                                          NULL, 0, NULL, NULL );
 350         DWORD cls_len = WideCharToMultiByte( CP_ACP, 0, (WCHAR *)(buf_ptr + info->ClassOffset),
 351                                              info->ClassLength / sizeof(WCHAR),
 352                                              NULL, 0, NULL, NULL );
 353
 354         if (ft) *ft = info->LastWriteTime;
 355
 356         if (len >= *name_len || (class_len && (cls_len >= *class_len)))
 357             status = STATUS_BUFFER_OVERFLOW;
 358         else
 359         {
 360             *name_len = len;
 361             WideCharToMultiByte( CP_ACP, 0, info->Name, info->NameLength/sizeof(WCHAR),
 362                                  name, len, NULL, NULL );
 363             name[len] = 0;
 364             if (class_len)
 365             {
 366                 *class_len = cls_len;
 367                 if (class)
 368                 {
 369                     WideCharToMultiByte( CP_ACP, 0, (WCHAR *)(buf_ptr + info->ClassOffset),
 370                                          info->ClassLength / sizeof(WCHAR),
 371                                          class, cls_len, NULL, NULL );
 372                     class[cls_len] = 0;
 373                 }
 374             }
 375         }
 376     }
 377
 378     if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
 379     return RtlNtStatusToDosError( status );
 380 }
 381
 382
 383 /******************************************************************************
 384  *           RegEnumKeyW   [ADVAPI32.@]
 385  */
 386 DWORD WINAPI RegEnumKeyW( HKEY hkey, DWORD index, LPWSTR name, DWORD name_len )
 387 {
 388     return RegEnumKeyExW( hkey, index, name, &name_len, NULL, NULL, NULL, NULL );
 389 }
 390
 391
 392 /******************************************************************************
 393  *           RegEnumKeyA   [ADVAPI32.@]
 394  */
 395 DWORD WINAPI RegEnumKeyA( HKEY hkey, DWORD index, LPSTR name, DWORD name_len )
 396 {
 397     return RegEnumKeyExA( hkey, index, name, &name_len, NULL, NULL, NULL, NULL );
 398 }
 399
 400
 401 /******************************************************************************
 402  *           RegQueryInfoKeyW   [ADVAPI32.@]
 403  *
 404  * PARAMS
 405  *    hkey       [I] Handle to key to query
 406  *    class      [O] Buffer for class string
 407  *    class_len  [O] Size of class string buffer
 408  *    reserved   [I] Reserved
 409  *    subkeys    [O] Buffer for number of subkeys
 410  *    max_subkey [O] Buffer for longest subkey name length
 411  *    max_class  [O] Buffer for longest class string length
 412  *    values     [O] Buffer for number of value entries
 413  *    max_value  [O] Buffer for longest value name length
 414  *    max_data   [O] Buffer for longest value data length
 415  *    security   [O] Buffer for security descriptor length
 416  *    modif      [O] Modification time
 417  *
 418  * - win95 allows class to be valid and class_len to be NULL
 419  * - winnt returns ERROR_INVALID_PARAMETER if class is valid and class_len is NULL
 420  * - both allow class to be NULL and class_len to be NULL
 421  * (it's hard to test validity, so test !NULL instead)
 422  */
 423 DWORD WINAPI RegQueryInfoKeyW( HKEY hkey, LPWSTR class, LPDWORD class_len, LPDWORD reserved,
 424                                LPDWORD subkeys, LPDWORD max_subkey, LPDWORD max_class,
 425                                LPDWORD values, LPDWORD max_value, LPDWORD max_data,
 426                                LPDWORD security, FILETIME *modif )
 427 {
 428     NTSTATUS status;
 429     char buffer[256], *buf_ptr = buffer;
 430     KEY_FULL_INFORMATION *info = (KEY_FULL_INFORMATION *)buffer;
 431     DWORD total_size;
 432
 433     TRACE( "(0x%x,%p,%ld,%p,%p,%p,%p,%p,%p,%p,%p)\n", hkey, class, class_len ? *class_len : 0,
 434            reserved, subkeys, max_subkey, values, max_value, max_data, security, modif );
 435
 436     if (class && !class_len && !(GetVersion() & 0x80000000 /*NT*/))
 437         return ERROR_INVALID_PARAMETER;
 438
 439     status = NtQueryKey( hkey, KeyFullInformation, buffer, sizeof(buffer), &total_size );
 440     if (status && status != STATUS_BUFFER_OVERFLOW) goto done;
 441
 442     if (class)
 443     {
 444         /* retry with a dynamically allocated buffer */
 445         while (status == STATUS_BUFFER_OVERFLOW)
 446         {
 447             if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
 448             if (!(buf_ptr = HeapAlloc( GetProcessHeap(), 0, total_size )))
 449                 return ERROR_NOT_ENOUGH_MEMORY;
 450             info = (KEY_FULL_INFORMATION *)buf_ptr;
 451             status = NtQueryKey( hkey, KeyFullInformation, buf_ptr, total_size, &total_size );
 452         }
 453
 454         if (status) goto done;
 455
 456         if (class_len && (info->ClassLength/sizeof(WCHAR) + 1 > *class_len))
 457         {
 458             status = STATUS_BUFFER_OVERFLOW;
 459         }
 460         else
 461         {
 462             memcpy( class, buf_ptr + info->ClassOffset, info->ClassLength );
 463             class[info->ClassLength/sizeof(WCHAR)] = 0;
 464         }
 465     }
 466     else status = STATUS_SUCCESS;
 467
 468     if (class_len) *class_len = info->ClassLength / sizeof(WCHAR);
 469     if (subkeys) *subkeys = info->SubKeys;
 470     if (max_subkey) *max_subkey = info->MaxNameLen;
 471     if (max_class) *max_class = info->MaxClassLen;
 472     if (values) *values = info->Values;
 473     if (max_value) *max_value = info->MaxValueNameLen;
 474     if (max_data) *max_data = info->MaxValueDataLen;
 475     if (modif) *modif = info->LastWriteTime;
 476
 477  done:
 478     if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
 479     return RtlNtStatusToDosError( status );
 480 }
 481
 482
 483 /******************************************************************************
 484  *           RegQueryInfoKeyA   [ADVAPI32.@]
 485  */
 486 DWORD WINAPI RegQueryInfoKeyA( HKEY hkey, LPSTR class, LPDWORD class_len, LPDWORD reserved,
 487                                LPDWORD subkeys, LPDWORD max_subkey, LPDWORD max_class,
 488                                LPDWORD values, LPDWORD max_value, LPDWORD max_data,
 489                                LPDWORD security, FILETIME *modif )
 490 {
 491     NTSTATUS status;
 492     char buffer[256], *buf_ptr = buffer;
 493     KEY_FULL_INFORMATION *info = (KEY_FULL_INFORMATION *)buffer;
 494     DWORD total_size, len;
 495
 496     TRACE( "(0x%x,%p,%ld,%p,%p,%p,%p,%p,%p,%p,%p)\n", hkey, class, class_len ? *class_len : 0,
 497            reserved, subkeys, max_subkey, values, max_value, max_data, security, modif );
 498
 499     if (class && !class_len && !(GetVersion() & 0x80000000 /*NT*/))
 500         return ERROR_INVALID_PARAMETER;
 501
 502     status = NtQueryKey( hkey, KeyFullInformation, buffer, sizeof(buffer), &total_size );
 503     if (status && status != STATUS_BUFFER_OVERFLOW) goto done;
 504
 505     if (class || class_len)
 506     {
 507         /* retry with a dynamically allocated buffer */
 508         while (status == STATUS_BUFFER_OVERFLOW)
 509         {
 510             if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
 511             if (!(buf_ptr = HeapAlloc( GetProcessHeap(), 0, total_size )))
 512                 return ERROR_NOT_ENOUGH_MEMORY;
 513             info = (KEY_FULL_INFORMATION *)buf_ptr;
 514             status = NtQueryKey( hkey, KeyFullInformation, buf_ptr, total_size, &total_size );
 515         }
 516
 517         if (status) goto done;
 518
 519         len = WideCharToMultiByte( CP_ACP, 0,
 520                                    (WCHAR *)(buf_ptr + info->ClassOffset),
 521                                    info->ClassLength/sizeof(WCHAR),
 522                                    NULL, 0, NULL, NULL );
 523         if (class_len)
 524         {
 525             if (len + 1 > *class_len) status = STATUS_BUFFER_OVERFLOW;
 526             *class_len = len;
 527         }
 528         if (class && !status)
 529         {
 530             WideCharToMultiByte( CP_ACP, 0,
 531                                  (WCHAR *)(buf_ptr + info->ClassOffset),
 532                                  info->ClassLength/sizeof(WCHAR),
 533                                  class, len, NULL, NULL );
 534             class[len] = 0;
 535         }
 536     }
 537     else status = STATUS_SUCCESS;
 538
 539     if (subkeys) *subkeys = info->SubKeys;
 540     if (max_subkey) *max_subkey = info->MaxNameLen;
 541     if (max_class) *max_class = info->MaxClassLen;
 542     if (values) *values = info->Values;
 543     if (max_value) *max_value = info->MaxValueNameLen;
 544     if (max_data) *max_data = info->MaxValueDataLen;
 545     if (modif) *modif = info->LastWriteTime;
 546
 547  done:
 548     if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
 549     return RtlNtStatusToDosError( status );
 550 }
 551
 552
 553 /******************************************************************************
 554  *           RegCloseKey   [ADVAPI32.@]
 555  *
 556  * Releases the handle of the specified key
 557  *
 558  * PARAMS
 559  *    hkey [I] Handle of key to close
 560  *
 561  * RETURNS
 562  *    Success: ERROR_SUCCESS
 563  *    Failure: Error code
 564  */
 565 DWORD WINAPI RegCloseKey( HKEY hkey )
 566 {
 567     if (!hkey || hkey >= 0x80000000) return ERROR_SUCCESS;
 568     return RtlNtStatusToDosError( NtClose( hkey ) );
 569 }
 570
 571
 572 /******************************************************************************
 573  *           RegDeleteKeyW   [ADVAPI32.@]
 574  *
 575  * PARAMS
 576  *    hkey   [I] Handle to open key
 577  *    name   [I] Name of subkey to delete
 578  *
 579  * RETURNS
 580  *    Success: ERROR_SUCCESS
 581  *    Failure: Error code
 582  */
 583 DWORD WINAPI RegDeleteKeyW( HKEY hkey, LPCWSTR name )
 584 {
 585     DWORD ret;
 586     HKEY tmp;
 587
 588     if (!name || !*name) return NtDeleteKey( hkey );
 589     if (!(ret = RegOpenKeyExW( hkey, name, 0, 0, &tmp )))
 590     {
 591         ret = RtlNtStatusToDosError( NtDeleteKey( tmp ) );
 592         RegCloseKey( tmp );
 593     }
 594     return ret;
 595 }
 596
 597
 598 /******************************************************************************
 599  *           RegDeleteKeyA   [ADVAPI32.@]
 600  */
 601 DWORD WINAPI RegDeleteKeyA( HKEY hkey, LPCSTR name )
 602 {
 603     DWORD ret;
 604     HKEY tmp;
 605
 606     if (!name || !*name) return NtDeleteKey( hkey );
 607     if (!(ret = RegOpenKeyExA( hkey, name, 0, 0, &tmp )))
 608     {
 609         ret = RtlNtStatusToDosError( NtDeleteKey( tmp ) );
 610         RegCloseKey( tmp );
 611     }
 612     return ret;
 613 }
 614
 615
 616
 617 /******************************************************************************
 618  *           RegSetValueExW   [ADVAPI32.@]
 619  *
 620  * Sets the data and type of a value under a register key
 621  *
 622  * PARAMS
 623  *    hkey       [I] Handle of key to set value for
 624  *    name       [I] Name of value to set
 625  *    reserved   [I] Reserved - must be zero
 626  *    type       [I] Flag for value type
 627  *    data       [I] Address of value data
 628  *    count      [I] Size of value data
 629  *
 630  * RETURNS
 631  *    Success: ERROR_SUCCESS
 632  *    Failure: Error code
 633  *
 634  * NOTES
 635  *   win95 does not care about count for REG_SZ and finds out the len by itself (js)
 636  *   NT does definitely care (aj)
 637  */
 638 DWORD WINAPI RegSetValueExW( HKEY hkey, LPCWSTR name, DWORD reserved,
 639                              DWORD type, CONST BYTE *data, DWORD count )
 640 {
 641     UNICODE_STRING nameW;
 642
 643     if (count && is_string(type))
 644     {
 645         LPCWSTR str = (LPCWSTR)data;
 646         /* if user forgot to count terminating null, add it (yes NT does this) */
 647         if (str[count / sizeof(WCHAR) - 1] && !str[count / sizeof(WCHAR)])
 648             count += sizeof(WCHAR);
 649     }
 650
 651     RtlInitUnicodeString( &nameW, name );
 652     return RtlNtStatusToDosError( NtSetValueKey( hkey, &nameW, 0, type, data, count ) );
 653 }
 654
 655
 656 /******************************************************************************
 657  *           RegSetValueExA   [ADVAPI32.@]
 658  */
 659 DWORD WINAPI RegSetValueExA( HKEY hkey, LPCSTR name, DWORD reserved, DWORD type,
 660                              CONST BYTE *data, DWORD count )
 661 {
 662     ANSI_STRING nameA;
 663     WCHAR *dataW = NULL;
 664     NTSTATUS status;
 665
 666     if (count && is_string(type))
 667     {
 668         /* if user forgot to count terminating null, add it (yes NT does this) */
 669         if (data[count-1] && !data[count]) count++;
 670     }
 671
 672     if (is_string( type )) /* need to convert to Unicode */
 673     {
 674         DWORD lenW = MultiByteToWideChar( CP_ACP, 0, data, count, NULL, 0 );
 675         if (!(dataW = HeapAlloc( GetProcessHeap(), 0, lenW*sizeof(WCHAR) )))
 676             return ERROR_OUTOFMEMORY;
 677         MultiByteToWideChar( CP_ACP, 0, data, count, dataW, lenW );
 678         count = lenW * sizeof(WCHAR);
 679         data = (BYTE *)dataW;
 680     }
 681
 682     RtlInitAnsiString( &nameA, name );
 683     if (!(status = RtlAnsiStringToUnicodeString( &NtCurrentTeb()->StaticUnicodeString,
 684                                                  &nameA, FALSE )))
 685     {
 686         status = NtSetValueKey( hkey, &NtCurrentTeb()->StaticUnicodeString, 0, type, data, count );
 687     }
 688     if (dataW) HeapFree( GetProcessHeap(), 0, dataW );
 689     return RtlNtStatusToDosError( status );
 690 }
 691
 692
 693 /******************************************************************************
 694  *           RegSetValueW   [ADVAPI32.@]
 695  */
 696 DWORD WINAPI RegSetValueW( HKEY hkey, LPCWSTR name, DWORD type, LPCWSTR data, DWORD count )
 697 {
 698     HKEY subkey = hkey;
 699     DWORD ret;
 700
 701     TRACE("(0x%x,%s,%ld,%s,%ld)\n", hkey, debugstr_w(name), type, debugstr_w(data), count );
 702
 703     if (type != REG_SZ) return ERROR_INVALID_PARAMETER;
 704
 705     if (name && name[0])  /* need to create the subkey */
 706     {
 707         if ((ret = RegCreateKeyW( hkey, name, &subkey )) != ERROR_SUCCESS) return ret;
 708     }
 709
 710     ret = RegSetValueExW( subkey, NULL, 0, REG_SZ, (LPBYTE)data,
 711                           (strlenW( data ) + 1) * sizeof(WCHAR) );
 712     if (subkey != hkey) RegCloseKey( subkey );
 713     return ret;
 714 }
 715
 716
 717 /******************************************************************************
 718  *           RegSetValueA   [ADVAPI32.@]
 719  */
 720 DWORD WINAPI RegSetValueA( HKEY hkey, LPCSTR name, DWORD type, LPCSTR data, DWORD count )
 721 {
 722     HKEY subkey = hkey;
 723     DWORD ret;
 724
 725     TRACE("(0x%x,%s,%ld,%s,%ld)\n", hkey, debugstr_a(name), type, debugstr_a(data), count );
 726
 727     if (type != REG_SZ) return ERROR_INVALID_PARAMETER;
 728
 729     if (name && name[0])  /* need to create the subkey */
 730     {
 731         if ((ret = RegCreateKeyA( hkey, name, &subkey )) != ERROR_SUCCESS) return ret;
 732     }
 733     ret = RegSetValueExA( subkey, NULL, 0, REG_SZ, (LPBYTE)data, strlen(data)+1 );
 734     if (subkey != hkey) RegCloseKey( subkey );
 735     return ret;
 736 }
 737
 738
 739
 740 /******************************************************************************
 741  *           RegQueryValueExW   [ADVAPI32.@]
 742  *
 743  * Retrieves type and data for a specified name associated with an open key
 744  *
 745  * PARAMS
 746  *    hkey      [I]   Handle of key to query
 747  *    name      [I]   Name of value to query
 748  *    reserved  [I]   Reserved - must be NULL
 749  *    type      [O]   Address of buffer for value type.  If NULL, the type
 750  *                        is not required.
 751  *    data      [O]   Address of data buffer.  If NULL, the actual data is
 752  *                        not required.
 753  *    count     [I/O] Address of data buffer size
 754  *
 755  * RETURNS
 756  *    ERROR_SUCCESS:   Success
 757  *    ERROR_MORE_DATA: !!! if the specified buffer is not big enough to hold the data
 758  *                     buffer is left untouched. The MS-documentation is wrong (js) !!!
 759  */
 760 DWORD WINAPI RegQueryValueExW( HKEY hkey, LPCWSTR name, LPDWORD reserved, LPDWORD type,
 761                                LPBYTE data, LPDWORD count )
 762 {
 763     NTSTATUS status;
 764     UNICODE_STRING name_str;
 765     DWORD total_size;
 766     char buffer[256], *buf_ptr = buffer;
 767     KEY_VALUE_PARTIAL_INFORMATION *info = (KEY_VALUE_PARTIAL_INFORMATION *)buffer;
 768     static const int info_size = sizeof(*info) - sizeof(info->Data);
 769
 770     TRACE("(0x%x,%s,%p,%p,%p,%p=%ld)\n",
 771           hkey, debugstr_w(name), reserved, type, data, count, count ? *count : 0 );
 772
 773     if ((data && !count) || reserved) return ERROR_INVALID_PARAMETER;
 774
 775     RtlInitUnicodeString( &name_str, name );
 776
 777     if (data) total_size = min( sizeof(buffer), *count + info_size );
 778     else total_size = info_size;
 779
 780     status = NtQueryValueKey( hkey, &name_str, KeyValuePartialInformation,
 781                               buffer, total_size, &total_size );
 782     if (status && status != STATUS_BUFFER_OVERFLOW) goto done;
 783
 784     if (data)
 785     {
 786         /* retry with a dynamically allocated buffer */
 787         while (status == STATUS_BUFFER_OVERFLOW && total_size - info_size <= *count)
 788         {
 789             if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
 790             if (!(buf_ptr = HeapAlloc( GetProcessHeap(), 0, total_size )))
 791                 return ERROR_NOT_ENOUGH_MEMORY;
 792             info = (KEY_VALUE_PARTIAL_INFORMATION *)buf_ptr;
 793             status = NtQueryValueKey( hkey, &name_str, KeyValuePartialInformation,
 794                                       buf_ptr, total_size, &total_size );
 795         }
 796
 797         if (!status)
 798         {
 799             memcpy( data, buf_ptr + info_size, total_size - info_size );
 800             /* if the type is REG_SZ and data is not 0-terminated
 801              * and there is enough space in the buffer NT appends a \0 */
 802             if (total_size - info_size <= *count-sizeof(WCHAR) && is_string(info->Type))
 803             {
 804                 WCHAR *ptr = (WCHAR *)(data + total_size - info_size);
 805                 if (ptr > (WCHAR *)data && ptr[-1]) *ptr = 0;
 806             }
 807         }
 808         else if (status != STATUS_BUFFER_OVERFLOW) goto done;
 809     }
 810     else status = STATUS_SUCCESS;
 811
 812     if (type) *type = info->Type;
 813     if (count) *count = total_size - info_size;
 814
 815  done:
 816     if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
 817     return RtlNtStatusToDosError(status);
 818 }
 819
 820
 821 /******************************************************************************
 822  *           RegQueryValueExA   [ADVAPI32.@]
 823  *
 824  * NOTES:
 825  * the documentation is wrong: if the buffer is too small it remains untouched
 826  */
 827 DWORD WINAPI RegQueryValueExA( HKEY hkey, LPCSTR name, LPDWORD reserved, LPDWORD type,
 828                                LPBYTE data, LPDWORD count )
 829 {
 830     NTSTATUS status;
 831     ANSI_STRING nameA;
 832     DWORD total_size;
 833     char buffer[256], *buf_ptr = buffer;
 834     KEY_VALUE_PARTIAL_INFORMATION *info = (KEY_VALUE_PARTIAL_INFORMATION *)buffer;
 835     static const int info_size = sizeof(*info) - sizeof(info->Data);
 836
 837     TRACE("(0x%x,%s,%p,%p,%p,%p=%ld)\n",
 838           hkey, debugstr_a(name), reserved, type, data, count, count ? *count : 0 );
 839
 840     if ((data && !count) || reserved) return ERROR_INVALID_PARAMETER;
 841
 842     RtlInitAnsiString( &nameA, name );
 843     if ((status = RtlAnsiStringToUnicodeString( &NtCurrentTeb()->StaticUnicodeString,
 844                                                 &nameA, FALSE )))
 845         return RtlNtStatusToDosError(status);
 846
 847     status = NtQueryValueKey( hkey, &NtCurrentTeb()->StaticUnicodeString,
 848                               KeyValuePartialInformation, buffer, sizeof(buffer), &total_size );
 849     if (status && status != STATUS_BUFFER_OVERFLOW) goto done;
 850
 851     /* we need to fetch the contents for a string type even if not requested,
 852      * because we need to compute the length of the ASCII string. */
 853     if (data || is_string(info->Type))
 854     {
 855         /* retry with a dynamically allocated buffer */
 856         while (status == STATUS_BUFFER_OVERFLOW)
 857         {
 858             if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
 859             if (!(buf_ptr = HeapAlloc( GetProcessHeap(), 0, total_size )))
 860             {
 861                 status = STATUS_NO_MEMORY;
 862                 goto done;
 863             }
 864             info = (KEY_VALUE_PARTIAL_INFORMATION *)buf_ptr;
 865             status = NtQueryValueKey( hkey, &NtCurrentTeb()->StaticUnicodeString,
 866                                     KeyValuePartialInformation, buf_ptr, total_size, &total_size );
 867         }
 868
 869         if (status) goto done;
 870
 871         if (is_string(info->Type))
 872         {
 873             DWORD len = WideCharToMultiByte( CP_ACP, 0, (WCHAR *)(buf_ptr + info_size),
 874                                              (total_size - info_size) /sizeof(WCHAR),
 875                                              NULL, 0, NULL, NULL );
 876             if (data && len)
 877             {
 878                 if (len > *count) status = STATUS_BUFFER_OVERFLOW;
 879                 else
 880                 {
 881                     WideCharToMultiByte( CP_ACP, 0, (WCHAR *)(buf_ptr + info_size),
 882                                          (total_size - info_size) /sizeof(WCHAR),
 883                                          data, len, NULL, NULL );
 884                     /* if the type is REG_SZ and data is not 0-terminated
 885                      * and there is enough space in the buffer NT appends a \0 */
 886                     if (len < *count && data[len-1]) data[len] = 0;
 887                 }
 888             }
 889             total_size = len + info_size;
 890         }
 891         else if (data)
 892         {
 893             if (total_size - info_size > *count) status = STATUS_BUFFER_OVERFLOW;
 894             else memcpy( data, buf_ptr + info_size, total_size - info_size );
 895         }
 896     }
 897     else status = STATUS_SUCCESS;
 898
 899     if (type) *type = info->Type;
 900     if (count) *count = total_size - info_size;
 901
 902  done:
 903     if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
 904     return RtlNtStatusToDosError(status);
 905 }
 906
 907
 908 /******************************************************************************
 909  *           RegQueryValueW   [ADVAPI32.@]
 910  */
 911 DWORD WINAPI RegQueryValueW( HKEY hkey, LPCWSTR name, LPWSTR data, LPLONG count )
 912 {
 913     DWORD ret;
 914     HKEY subkey = hkey;
 915
 916     TRACE("(%x,%s,%p,%ld)\n", hkey, debugstr_w(name), data, count ? *count : 0 );
 917
 918     if (name && name[0])
 919     {
 920         if ((ret = RegOpenKeyW( hkey, name, &subkey )) != ERROR_SUCCESS) return ret;
 921     }
 922     ret = RegQueryValueExW( subkey, NULL, NULL, NULL, (LPBYTE)data, count );
 923     if (subkey != hkey) RegCloseKey( subkey );
 924     if (ret == ERROR_FILE_NOT_FOUND)
 925     {
 926         /* return empty string if default value not found */
 927         if (data) *data = 0;
 928         if (count) *count = 1;
 929         ret = ERROR_SUCCESS;
 930     }
 931     return ret;
 932 }
 933
 934
 935 /******************************************************************************
 936  *           RegQueryValueA   [ADVAPI32.@]
 937  */
 938 DWORD WINAPI RegQueryValueA( HKEY hkey, LPCSTR name, LPSTR data, LPLONG count )
 939 {
 940     DWORD ret;
 941     HKEY subkey = hkey;
 942
 943     TRACE("(%x,%s,%p,%ld)\n", hkey, debugstr_a(name), data, count ? *count : 0 );
 944
 945     if (name && name[0])
 946     {
 947         if ((ret = RegOpenKeyA( hkey, name, &subkey )) != ERROR_SUCCESS) return ret;
 948     }
 949     ret = RegQueryValueExA( subkey, NULL, NULL, NULL, (LPBYTE)data, count );
 950     if (subkey != hkey) RegCloseKey( subkey );
 951     if (ret == ERROR_FILE_NOT_FOUND)
 952     {
 953         /* return empty string if default value not found */
 954         if (data) *data = 0;
 955         if (count) *count = 1;
 956         ret = ERROR_SUCCESS;
 957     }
 958     return ret;
 959 }
 960
 961
 962 /******************************************************************************
 963  *           RegEnumValueW   [ADVAPI32.@]
 964  *
 965  * PARAMS
 966  *    hkey       [I] Handle to key to query
 967  *    index      [I] Index of value to query
 968  *    value      [O] Value string
 969  *    val_count  [I/O] Size of value buffer (in wchars)
 970  *    reserved   [I] Reserved
 971  *    type       [O] Type code
 972  *    data       [O] Value data
 973  *    count      [I/O] Size of data buffer (in bytes)
 974  */
 975
 976 DWORD WINAPI RegEnumValueW( HKEY hkey, DWORD index, LPWSTR value, LPDWORD val_count,
 977                             LPDWORD reserved, LPDWORD type, LPBYTE data, LPDWORD count )
 978 {
 979     NTSTATUS status;
 980     DWORD total_size;
 981     char buffer[256], *buf_ptr = buffer;
 982     KEY_VALUE_FULL_INFORMATION *info = (KEY_VALUE_FULL_INFORMATION *)buffer;
 983     static const int info_size = sizeof(*info) - sizeof(info->Name);
 984
 985     TRACE("(%x,%ld,%p,%p,%p,%p,%p,%p)\n",
 986           hkey, index, value, val_count, reserved, type, data, count );
 987
 988     /* NT only checks count, not val_count */
 989     if ((data && !count) || reserved) return ERROR_INVALID_PARAMETER;
 990
 991     total_size = info_size + (MAX_PATH + 1) * sizeof(WCHAR);
 992     if (data) total_size += *count;
 993     total_size = min( sizeof(buffer), total_size );
 994
 995     status = NtEnumerateValueKey( hkey, index, KeyValueFullInformation,
 996                                   buffer, total_size, &total_size );
 997     if (status && status != STATUS_BUFFER_OVERFLOW) goto done;
 998
 999     if (value || data)
1000     {
1001         /* retry with a dynamically allocated buffer */
1002         while (status == STATUS_BUFFER_OVERFLOW)
1003         {
1004             if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
1005             if (!(buf_ptr = HeapAlloc( GetProcessHeap(), 0, total_size )))
1006                 return ERROR_NOT_ENOUGH_MEMORY;
1007             info = (KEY_VALUE_FULL_INFORMATION *)buf_ptr;
1008             status = NtEnumerateValueKey( hkey, index, KeyValueFullInformation,
1009                                           buf_ptr, total_size, &total_size );
1010         }
1011
1012         if (status) goto done;
1013
1014         if (value)
1015         {
1016             if (info->NameLength/sizeof(WCHAR) >= *val_count)
1017             {
1018                 status = STATUS_BUFFER_OVERFLOW;
1019                 goto done;
1020             }
1021             memcpy( value, info->Name, info->NameLength );
1022             *val_count = info->NameLength / sizeof(WCHAR);
1023             value[*val_count] = 0;
1024         }
1025
1026         if (data)
1027         {
1028             if (total_size - info->DataOffset > *count)
1029             {
1030                 status = STATUS_BUFFER_OVERFLOW;
1031                 goto done;
1032             }
1033             memcpy( data, buf_ptr + info->DataOffset, total_size - info->DataOffset );
1034             if (total_size - info->DataOffset <= *count-sizeof(WCHAR) && is_string(info->Type))
1035             {
1036                 /* if the type is REG_SZ and data is not 0-terminated
1037                  * and there is enough space in the buffer NT appends a \0 */
1038                 WCHAR *ptr = (WCHAR *)(data + total_size - info->DataOffset);
1039                 if (ptr > (WCHAR *)data && ptr[-1]) *ptr = 0;
1040             }
1041         }
1042     }
1043     else status = STATUS_SUCCESS;
1044
1045     if (type) *type = info->Type;
1046     if (count) *count = info->DataLength;
1047
1048  done:
1049     if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
1050     return RtlNtStatusToDosError(status);
1051 }
1052
1053
1054 /******************************************************************************
1055  *           RegEnumValueA   [ADVAPI32.@]
1056  */
1057 DWORD WINAPI RegEnumValueA( HKEY hkey, DWORD index, LPSTR value, LPDWORD val_count,
1058                             LPDWORD reserved, LPDWORD type, LPBYTE data, LPDWORD count )
1059 {
1060     NTSTATUS status;
1061     DWORD total_size;
1062     char buffer[256], *buf_ptr = buffer;
1063     KEY_VALUE_FULL_INFORMATION *info = (KEY_VALUE_FULL_INFORMATION *)buffer;
1064     static const int info_size = sizeof(*info) - sizeof(info->Name);
1065
1066     TRACE("(%x,%ld,%p,%p,%p,%p,%p,%p)\n",
1067           hkey, index, value, val_count, reserved, type, data, count );
1068
1069     /* NT only checks count, not val_count */
1070     if ((data && !count) || reserved) return ERROR_INVALID_PARAMETER;
1071
1072     total_size = info_size + (MAX_PATH + 1) * sizeof(WCHAR);
1073     if (data) total_size += *count;
1074     total_size = min( sizeof(buffer), total_size );
1075
1076     status = NtEnumerateValueKey( hkey, index, KeyValueFullInformation,
1077                                   buffer, total_size, &total_size );
1078     if (status && status != STATUS_BUFFER_OVERFLOW) goto done;
1079
1080     /* we need to fetch the contents for a string type even if not requested,
1081      * because we need to compute the length of the ASCII string. */
1082     if (value || data || is_string(info->Type))
1083     {
1084         /* retry with a dynamically allocated buffer */
1085         while (status == STATUS_BUFFER_OVERFLOW)
1086         {
1087             if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
1088             if (!(buf_ptr = HeapAlloc( GetProcessHeap(), 0, total_size )))
1089                 return ERROR_NOT_ENOUGH_MEMORY;
1090             info = (KEY_VALUE_FULL_INFORMATION *)buf_ptr;
1091             status = NtEnumerateValueKey( hkey, index, KeyValueFullInformation,
1092                                           buf_ptr, total_size, &total_size );
1093         }
1094
1095         if (status) goto done;
1096
1097         if (value)
1098         {
1099             DWORD len = WideCharToMultiByte( CP_ACP, 0, info->Name, info->NameLength/sizeof(WCHAR),
1100                                              NULL, 0, NULL, NULL );
1101             if (len >= *val_count)
1102             {
1103                 status = STATUS_BUFFER_OVERFLOW;
1104                 goto done;
1105             }
1106             WideCharToMultiByte( CP_ACP, 0, info->Name, info->NameLength/sizeof(WCHAR),
1107                                  value, len, NULL, NULL );
1108             value[len] = 0;
1109             *val_count = len;
1110         }
1111
1112         if (is_string(info->Type))
1113         {
1114             DWORD len = WideCharToMultiByte( CP_ACP, 0, (WCHAR *)(buf_ptr + info->DataOffset),
1115                                              (total_size - info->DataOffset) / sizeof(WCHAR),
1116                                              NULL, 0, NULL, NULL );
1117             if (data && len)
1118             {
1119                 if (len > *count)
1120                 {
1121                     status = STATUS_BUFFER_OVERFLOW;
1122                     goto done;
1123                 }
1124                 WideCharToMultiByte( CP_ACP, 0, (WCHAR *)(buf_ptr + info->DataOffset),
1125                                      (total_size - info->DataOffset) / sizeof(WCHAR),
1126                                      data, len, NULL, NULL );
1127                 /* if the type is REG_SZ and data is not 0-terminated
1128                  * and there is enough space in the buffer NT appends a \0 */
1129                 if (len < *count && data[len-1]) data[len] = 0;
1130             }
1131             info->DataLength = len;
1132         }
1133         else if (data)
1134         {
1135             if (total_size - info->DataOffset > *count) status = STATUS_BUFFER_OVERFLOW;
1136             else memcpy( data, buf_ptr + info->DataOffset, total_size - info->DataOffset );
1137         }
1138     }
1139     else status = STATUS_SUCCESS;
1140
1141     if (type) *type = info->Type;
1142     if (count) *count = info->DataLength;
1143
1144  done:
1145     if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
1146     return RtlNtStatusToDosError(status);
1147 }
1148
1149
1150
1151 /******************************************************************************
1152  *           RegDeleteValueW   [ADVAPI32.@]
1153  *
1154  * PARAMS
1155  *    hkey   [I] handle to key
1156  *    name   [I] name of value to delete
1157  *
1158  * RETURNS
1159  *    error status
1160  */
1161 DWORD WINAPI RegDeleteValueW( HKEY hkey, LPCWSTR name )
1162 {
1163     UNICODE_STRING nameW;
1164     RtlInitUnicodeString( &nameW, name );
1165     return RtlNtStatusToDosError( NtDeleteValueKey( hkey, &nameW ) );
1166 }
1167
1168
1169 /******************************************************************************
1170  *           RegDeleteValueA   [ADVAPI32.@]
1171  */
1172 DWORD WINAPI RegDeleteValueA( HKEY hkey, LPCSTR name )
1173 {
1174     STRING nameA;
1175     NTSTATUS status;
1176
1177     RtlInitAnsiString( &nameA, name );
1178     if (!(status = RtlAnsiStringToUnicodeString( &NtCurrentTeb()->StaticUnicodeString,
1179                                                  &nameA, FALSE )))
1180     {
1181         status = NtDeleteValueKey( hkey, &NtCurrentTeb()->StaticUnicodeString );
1182     }
1183     return RtlNtStatusToDosError( status );
1184 }
1185
1186
1187 /******************************************************************************
1188  *           RegLoadKeyW   [ADVAPI32.@]
1189  *
1190  * PARAMS
1191  *    hkey      [I] Handle of open key
1192  *    subkey    [I] Address of name of subkey
1193  *    filename  [I] Address of filename for registry information
1194  */
1195 LONG WINAPI RegLoadKeyW( HKEY hkey, LPCWSTR subkey, LPCWSTR filename )
1196 {
1197     HANDLE file;
1198     DWORD ret, len, err = GetLastError();
1199
1200     TRACE( "(%x,%s,%s)\n", hkey, debugstr_w(subkey), debugstr_w(filename) );
1201
1202     if (!filename || !*filename) return ERROR_INVALID_PARAMETER;
1203     if (!subkey || !*subkey) return ERROR_INVALID_PARAMETER;
1204
1205     len = strlenW( subkey ) * sizeof(WCHAR);
1206     if (len > MAX_PATH*sizeof(WCHAR)) return ERROR_INVALID_PARAMETER;
1207
1208     if ((file = CreateFileW( filename, GENERIC_READ, 0, NULL, OPEN_EXISTING,
1209                              FILE_ATTRIBUTE_NORMAL, 0 )) == INVALID_HANDLE_VALUE)
1210     {
1211         ret = GetLastError();
1212         goto done;
1213     }
1214
1215     SERVER_START_VAR_REQ( load_registry, len )
1216     {
1217         req->hkey  = hkey;
1218         req->file  = file;
1219         memcpy( server_data_ptr(req), subkey, len );
1220         ret = RtlNtStatusToDosError( SERVER_CALL() );
1221     }
1222     SERVER_END_VAR_REQ;
1223     CloseHandle( file );
1224
1225  done:
1226     SetLastError( err );  /* restore the last error code */
1227     return ret;
1228 }
1229
1230
1231 /******************************************************************************
1232  *           RegLoadKeyA   [ADVAPI32.@]
1233  */
1234 LONG WINAPI RegLoadKeyA( HKEY hkey, LPCSTR subkey, LPCSTR filename )
1235 {
1236     HANDLE file;
1237     DWORD ret, len, err = GetLastError();
1238
1239     TRACE( "(%x,%s,%s)\n", hkey, debugstr_a(subkey), debugstr_a(filename) );
1240
1241     if (!filename || !*filename) return ERROR_INVALID_PARAMETER;
1242     if (!subkey || !*subkey) return ERROR_INVALID_PARAMETER;
1243
1244     len = MultiByteToWideChar( CP_ACP, 0, subkey, strlen(subkey), NULL, 0 ) * sizeof(WCHAR);
1245     if (len > MAX_PATH*sizeof(WCHAR)) return ERROR_INVALID_PARAMETER;
1246
1247     if ((file = CreateFileA( filename, GENERIC_READ, 0, NULL, OPEN_EXISTING,
1248                              FILE_ATTRIBUTE_NORMAL, 0 )) == INVALID_HANDLE_VALUE)
1249     {
1250         ret = GetLastError();
1251         goto done;
1252     }
1253
1254     SERVER_START_VAR_REQ( load_registry, len )
1255     {
1256         req->hkey  = hkey;
1257         req->file  = file;
1258         MultiByteToWideChar( CP_ACP, 0, subkey, strlen(subkey),
1259                              server_data_ptr(req), len/sizeof(WCHAR) );
1260         ret = RtlNtStatusToDosError( SERVER_CALL() );
1261     }
1262     SERVER_END_VAR_REQ;
1263     CloseHandle( file );
1264
1265  done:
1266     SetLastError( err );  /* restore the last error code */
1267     return ret;
1268 }
1269
1270
1271 /******************************************************************************
1272  *           RegSaveKeyA   [ADVAPI32.@]
1273  *
1274  * PARAMS
1275  *    hkey   [I] Handle of key where save begins
1276  *    lpFile [I] Address of filename to save to
1277  *    sa     [I] Address of security structure
1278  */
1279 LONG WINAPI RegSaveKeyA( HKEY hkey, LPCSTR file, LPSECURITY_ATTRIBUTES sa )
1280 {
1281     char buffer[1024];
1282     int count = 0;
1283     LPSTR name;
1284     DWORD ret, err;
1285     HFILE handle;
1286
1287     TRACE( "(%x,%s,%p)\n", hkey, debugstr_a(file), sa );
1288
1289     if (!file || !*file) return ERROR_INVALID_PARAMETER;
1290
1291     err = GetLastError();
1292     GetFullPathNameA( file, sizeof(buffer), buffer, &name );
1293     for (;;)
1294     {
1295         sprintf( name, "reg%04x.tmp", count++ );
1296         handle = CreateFileA( buffer, GENERIC_WRITE, 0, NULL,
1297                             CREATE_NEW, FILE_ATTRIBUTE_NORMAL, 0 );
1298         if (handle != INVALID_HANDLE_VALUE) break;
1299         if ((ret = GetLastError()) != ERROR_ALREADY_EXISTS) goto done;
1300
1301         /* Something gone haywire ? Please report if this happens abnormally */
1302         if (count >= 100)
1303             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", buffer, count);
1304     }
1305
1306     SERVER_START_REQ( save_registry )
1307     {
1308         req->hkey = hkey;
1309         req->file = handle;
1310         ret = RtlNtStatusToDosError( SERVER_CALL() );
1311     }
1312     SERVER_END_REQ;
1313
1314     CloseHandle( handle );
1315     if (!ret)
1316     {
1317         if (!MoveFileExA( buffer, file, MOVEFILE_REPLACE_EXISTING ))
1318         {
1319             ERR( "Failed to move %s to %s\n", buffer, file );
1320             ret = GetLastError();
1321         }
1322     }
1323     if (ret) DeleteFileA( buffer );
1324
1325 done:
1326     SetLastError( err );  /* restore last error code */
1327     return ret;
1328 }
1329
1330
1331 /******************************************************************************
1332  *           RegSaveKeyW   [ADVAPI32.@]
1333  */
1334 LONG WINAPI RegSaveKeyW( HKEY hkey, LPCWSTR file, LPSECURITY_ATTRIBUTES sa )
1335 {
1336     LPSTR fileA = HEAP_strdupWtoA( GetProcessHeap(), 0, file );
1337     DWORD ret = RegSaveKeyA( hkey, fileA, sa );
1338     if (fileA) HeapFree( GetProcessHeap(), 0, fileA );
1339     return ret;
1340 }
1341
1342
1343 /******************************************************************************
1344  * RegRestoreKeyW [ADVAPI32.@]
1345  *
1346  * PARAMS
1347  *    hkey    [I] Handle of key where restore begins
1348  *    lpFile  [I] Address of filename containing saved tree
1349  *    dwFlags [I] Optional flags
1350  */
1351 LONG WINAPI RegRestoreKeyW( HKEY hkey, LPCWSTR lpFile, DWORD dwFlags )
1352 {
1353     TRACE("(%x,%s,%ld)\n",hkey,debugstr_w(lpFile),dwFlags);
1354
1355     /* It seems to do this check before the hkey check */
1356     if (!lpFile || !*lpFile)
1357         return ERROR_INVALID_PARAMETER;
1358
1359     FIXME("(%x,%s,%ld): stub\n",hkey,debugstr_w(lpFile),dwFlags);
1360
1361     /* Check for file existence */
1362
1363     return ERROR_SUCCESS;
1364 }
1365
1366
1367 /******************************************************************************
1368  * RegRestoreKeyA [ADVAPI32.@]
1369  */
1370 LONG WINAPI RegRestoreKeyA( HKEY hkey, LPCSTR lpFile, DWORD dwFlags )
1371 {
1372     LPWSTR lpFileW = HEAP_strdupAtoW( GetProcessHeap(), 0, lpFile );
1373     LONG ret = RegRestoreKeyW( hkey, lpFileW, dwFlags );
1374     HeapFree( GetProcessHeap(), 0, lpFileW );
1375     return ret;
1376 }
1377
1378
1379 /******************************************************************************
1380  * RegUnLoadKeyW [ADVAPI32.@]
1381  *
1382  * PARAMS
1383  *    hkey     [I] Handle of open key
1384  *    lpSubKey [I] Address of name of subkey to unload
1385  */
1386 LONG WINAPI RegUnLoadKeyW( HKEY hkey, LPCWSTR lpSubKey )
1387 {
1388     FIXME("(%x,%s): stub\n",hkey, debugstr_w(lpSubKey));
1389     return ERROR_SUCCESS;
1390 }
1391
1392
1393 /******************************************************************************
1394  * RegUnLoadKeyA [ADVAPI32.@]
1395  */
1396 LONG WINAPI RegUnLoadKeyA( HKEY hkey, LPCSTR lpSubKey )
1397 {
1398     LPWSTR lpSubKeyW = HEAP_strdupAtoW( GetProcessHeap(), 0, lpSubKey );
1399     LONG ret = RegUnLoadKeyW( hkey, lpSubKeyW );
1400     if(lpSubKeyW) HeapFree( GetProcessHeap(), 0, lpSubKeyW);
1401     return ret;
1402 }
1403
1404
1405 /******************************************************************************
1406  * RegReplaceKeyW [ADVAPI32.@]
1407  *
1408  * PARAMS
1409  *    hkey      [I] Handle of open key
1410  *    lpSubKey  [I] Address of name of subkey
1411  *    lpNewFile [I] Address of filename for file with new data
1412  *    lpOldFile [I] Address of filename for backup file
1413  */
1414 LONG WINAPI RegReplaceKeyW( HKEY hkey, LPCWSTR lpSubKey, LPCWSTR lpNewFile,
1415                               LPCWSTR lpOldFile )
1416 {
1417     FIXME("(%x,%s,%s,%s): stub\n", hkey, debugstr_w(lpSubKey),
1418           debugstr_w(lpNewFile),debugstr_w(lpOldFile));
1419     return ERROR_SUCCESS;
1420 }
1421
1422
1423 /******************************************************************************
1424  * RegReplaceKeyA [ADVAPI32.@]
1425  */
1426 LONG WINAPI RegReplaceKeyA( HKEY hkey, LPCSTR lpSubKey, LPCSTR lpNewFile,
1427                               LPCSTR lpOldFile )
1428 {
1429     LPWSTR lpSubKeyW = HEAP_strdupAtoW( GetProcessHeap(), 0, lpSubKey );
1430     LPWSTR lpNewFileW = HEAP_strdupAtoW( GetProcessHeap(), 0, lpNewFile );
1431     LPWSTR lpOldFileW = HEAP_strdupAtoW( GetProcessHeap(), 0, lpOldFile );
1432     LONG ret = RegReplaceKeyW( hkey, lpSubKeyW, lpNewFileW, lpOldFileW );
1433     HeapFree( GetProcessHeap(), 0, lpOldFileW );
1434     HeapFree( GetProcessHeap(), 0, lpNewFileW );
1435     HeapFree( GetProcessHeap(), 0, lpSubKeyW );
1436     return ret;
1437 }
1438
1439
1440 /******************************************************************************
1441  * RegSetKeySecurity [ADVAPI32.@]
1442  *
1443  * PARAMS
1444  *    hkey          [I] Open handle of key to set
1445  *    SecurityInfo  [I] Descriptor contents
1446  *    pSecurityDesc [I] Address of descriptor for key
1447  */
1448 LONG WINAPI RegSetKeySecurity( HKEY hkey, SECURITY_INFORMATION SecurityInfo,
1449                                PSECURITY_DESCRIPTOR pSecurityDesc )
1450 {
1451     TRACE("(%x,%ld,%p)\n",hkey,SecurityInfo,pSecurityDesc);
1452
1453     /* It seems to perform this check before the hkey check */
1454     if ((SecurityInfo & OWNER_SECURITY_INFORMATION) ||
1455         (SecurityInfo & GROUP_SECURITY_INFORMATION) ||
1456         (SecurityInfo & DACL_SECURITY_INFORMATION) ||
1457         (SecurityInfo & SACL_SECURITY_INFORMATION)) {
1458         /* Param OK */
1459     } else
1460         return ERROR_INVALID_PARAMETER;
1461
1462     if (!pSecurityDesc)
1463         return ERROR_INVALID_PARAMETER;
1464
1465     FIXME(":(%x,%ld,%p): stub\n",hkey,SecurityInfo,pSecurityDesc);
1466
1467     return ERROR_SUCCESS;
1468 }
1469
1470
1471 /******************************************************************************
1472  * RegGetKeySecurity [ADVAPI32.@]
1473  * Retrieves a copy of security descriptor protecting the registry key
1474  *
1475  * PARAMS
1476  *    hkey                   [I]   Open handle of key to set
1477  *    SecurityInformation    [I]   Descriptor contents
1478  *    pSecurityDescriptor    [O]   Address of descriptor for key
1479  *    lpcbSecurityDescriptor [I/O] Address of size of buffer and description
1480  *
1481  * RETURNS
1482  *    Success: ERROR_SUCCESS
1483  *    Failure: Error code
1484  */
1485 LONG WINAPI RegGetKeySecurity( HKEY hkey, SECURITY_INFORMATION SecurityInformation,
1486                                PSECURITY_DESCRIPTOR pSecurityDescriptor,
1487                                LPDWORD lpcbSecurityDescriptor )
1488 {
1489     TRACE("(%x,%ld,%p,%ld)\n",hkey,SecurityInformation,pSecurityDescriptor,
1490           lpcbSecurityDescriptor?*lpcbSecurityDescriptor:0);
1491
1492     /* FIXME: Check for valid SecurityInformation values */
1493
1494     if (*lpcbSecurityDescriptor < sizeof(SECURITY_DESCRIPTOR))
1495         return ERROR_INSUFFICIENT_BUFFER;
1496
1497     FIXME("(%x,%ld,%p,%ld): stub\n",hkey,SecurityInformation,
1498           pSecurityDescriptor,lpcbSecurityDescriptor?*lpcbSecurityDescriptor:0);
1499
1500     return ERROR_SUCCESS;
1501 }
1502
1503
1504 /******************************************************************************
1505  * RegFlushKey [ADVAPI32.@]
1506  * Immediately writes key to registry.
1507  * Only returns after data has been written to disk.
1508  *
1509  * FIXME: does it really wait until data is written ?
1510  *
1511  * PARAMS
1512  *    hkey [I] Handle of key to write
1513  *
1514  * RETURNS
1515  *    Success: ERROR_SUCCESS
1516  *    Failure: Error code
1517  */
1518 DWORD WINAPI RegFlushKey( HKEY hkey )
1519 {
1520     FIXME( "(%x): stub\n", hkey );
1521     return ERROR_SUCCESS;
1522 }
1523
1524
1525 /******************************************************************************
1526  * RegConnectRegistryW [ADVAPI32.@]
1527  *
1528  * PARAMS
1529  *    lpMachineName [I] Address of name of remote computer
1530  *    hHey          [I] Predefined registry handle
1531  *    phkResult     [I] Address of buffer for remote registry handle
1532  */
1533 LONG WINAPI RegConnectRegistryW( LPCWSTR lpMachineName, HKEY hKey,
1534                                    LPHKEY phkResult )
1535 {
1536     TRACE("(%s,%x,%p): stub\n",debugstr_w(lpMachineName),hKey,phkResult);
1537
1538     if (!lpMachineName || !*lpMachineName) {
1539         /* Use the local machine name */
1540         return RegOpenKeyA( hKey, "", phkResult );
1541     }
1542
1543     FIXME("Cannot connect to %s\n",debugstr_w(lpMachineName));
1544     return ERROR_BAD_NETPATH;
1545 }
1546
1547
1548 /******************************************************************************
1549  * RegConnectRegistryA [ADVAPI32.@]
1550  */
1551 LONG WINAPI RegConnectRegistryA( LPCSTR machine, HKEY hkey, LPHKEY reskey )
1552 {
1553     LPWSTR machineW = HEAP_strdupAtoW( GetProcessHeap(), 0, machine );
1554     DWORD ret = RegConnectRegistryW( machineW, hkey, reskey );
1555     HeapFree( GetProcessHeap(), 0, machineW );
1556     return ret;
1557 }
1558
1559
1560 /******************************************************************************
1561  * RegNotifyChangeKeyValue [ADVAPI32.@]
1562  *
1563  * PARAMS
1564  *    hkey            [I] Handle of key to watch
1565  *    fWatchSubTree   [I] Flag for subkey notification
1566  *    fdwNotifyFilter [I] Changes to be reported
1567  *    hEvent          [I] Handle of signaled event
1568  *    fAsync          [I] Flag for asynchronous reporting
1569  */
1570 LONG WINAPI RegNotifyChangeKeyValue( HKEY hkey, BOOL fWatchSubTree,
1571                                      DWORD fdwNotifyFilter, HANDLE hEvent,
1572                                      BOOL fAsync )
1573 {
1574     FIXME("(%x,%i,%ld,%x,%i): stub\n",hkey,fWatchSubTree,fdwNotifyFilter,
1575           hEvent,fAsync);
1576     return ERROR_SUCCESS;
1577 }