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advapi32: Fixed last error check in RegSaveKey.
[wine.git] / dlls / advapi32 / registry.c
blob20f6a7cda8a3314b14c8c4b46fe75d95e2a182dc
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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
27 */
28
29 #include <stdlib.h>
30 #include <stdarg.h>
31 #include <stdio.h>
32
33 #include "ntstatus.h"
34 #define WIN32_NO_STATUS
35 #include "windef.h"
36 #include "winbase.h"
37 #include "winreg.h"
38 #include "winerror.h"
39 #include "winternl.h"
40 #include "winuser.h"
41
42 #include "wine/unicode.h"
43 #include "wine/debug.h"
44
45 WINE_DEFAULT_DEBUG_CHANNEL(reg);
46
47 /* allowed bits for access mask */
48 #define KEY_ACCESS_MASK (KEY_ALL_ACCESS | MAXIMUM_ALLOWED)
49
50 #define HKEY_SPECIAL_ROOT_FIRST HKEY_CLASSES_ROOT
51 #define HKEY_SPECIAL_ROOT_LAST HKEY_DYN_DATA
52 #define NB_SPECIAL_ROOT_KEYS ((UINT)HKEY_SPECIAL_ROOT_LAST - (UINT)HKEY_SPECIAL_ROOT_FIRST + 1)
53
54 static HKEY special_root_keys[NB_SPECIAL_ROOT_KEYS];
55 static BOOL hkcu_cache_disabled;
56
57 static const WCHAR name_CLASSES_ROOT[] =
58 {'M','a','c','h','i','n','e','\\',
59 'S','o','f','t','w','a','r','e','\\',
60 'C','l','a','s','s','e','s',0};
61 static const WCHAR name_LOCAL_MACHINE[] =
62 {'M','a','c','h','i','n','e',0};
63 static const WCHAR name_USERS[] =
64 {'U','s','e','r',0};
65 static const WCHAR name_PERFORMANCE_DATA[] =
66 {'P','e','r','f','D','a','t','a',0};
67 static const WCHAR name_CURRENT_CONFIG[] =
68 {'M','a','c','h','i','n','e','\\',
69 'S','y','s','t','e','m','\\',
70 'C','u','r','r','e','n','t','C','o','n','t','r','o','l','S','e','t','\\',
71 'H','a','r','d','w','a','r','e',' ','P','r','o','f','i','l','e','s','\\',
72 'C','u','r','r','e','n','t',0};
73 static const WCHAR name_DYN_DATA[] =
74 {'D','y','n','D','a','t','a',0};
75
76 static const WCHAR *root_key_names[NB_SPECIAL_ROOT_KEYS] =
77 {
78 name_CLASSES_ROOT,
79 NULL, /* HKEY_CURRENT_USER is determined dynamically */
80 name_LOCAL_MACHINE,
81 name_USERS,
82 name_PERFORMANCE_DATA,
83 name_CURRENT_CONFIG,
84 name_DYN_DATA
85 };
86
87
88 /* check if value type needs string conversion (Ansi<->Unicode) */
89 inline static int is_string( DWORD type )
90 {
91 return (type == REG_SZ) || (type == REG_EXPAND_SZ) || (type == REG_MULTI_SZ);
92 }
93
94 /* check if current version is NT or Win95 */
95 inline static int is_version_nt(void)
96 {
97 return !(GetVersion() & 0x80000000);
98 }
99
100 /* create one of the HKEY_* special root keys */
101 static HKEY create_special_root_hkey( HANDLE hkey, DWORD access )
102 {
103 HKEY ret = 0;
104 int idx = (UINT_PTR)hkey - (UINT_PTR)HKEY_SPECIAL_ROOT_FIRST;
105
106 if (hkey == HKEY_CURRENT_USER)
107 {
108 if (RtlOpenCurrentUser( access, &hkey )) return 0;
109 TRACE( "HKEY_CURRENT_USER -> %p\n", hkey );
110
111 /* don't cache the key in the table if caching is disabled */
112 if (hkcu_cache_disabled)
113 return hkey;
114 }
115 else
116 {
117 OBJECT_ATTRIBUTES attr;
118 UNICODE_STRING name;
119
120 attr.Length = sizeof(attr);
121 attr.RootDirectory = 0;
122 attr.ObjectName = &name;
123 attr.Attributes = 0;
124 attr.SecurityDescriptor = NULL;
125 attr.SecurityQualityOfService = NULL;
126 RtlInitUnicodeString( &name, root_key_names[idx] );
127 if (NtCreateKey( &hkey, access, &attr, 0, NULL, 0, NULL )) return 0;
128 TRACE( "%s -> %p\n", debugstr_w(attr.ObjectName->Buffer), hkey );
129 }
130
131 if (!(ret = InterlockedCompareExchangePointer( (void **)&special_root_keys[idx], hkey, 0 )))
132 ret = hkey;
133 else
134 NtClose( hkey ); /* somebody beat us to it */
135 return ret;
136 }
137
138 /* map the hkey from special root to normal key if necessary */
139 inline static HKEY get_special_root_hkey( HKEY hkey )
140 {
141 HKEY ret = hkey;
142
143 if ((hkey >= HKEY_SPECIAL_ROOT_FIRST) && (hkey <= HKEY_SPECIAL_ROOT_LAST))
144 {
145 if (!(ret = special_root_keys[(UINT_PTR)hkey - (UINT_PTR)HKEY_SPECIAL_ROOT_FIRST]))
146 ret = create_special_root_hkey( hkey, KEY_ALL_ACCESS );
147 }
148 return ret;
149 }
150
151
152 /******************************************************************************
153 * RegCreateKeyExW [ADVAPI32.@]
154 *
155 * See RegCreateKeyExA.
156 */
157 LONG WINAPI RegCreateKeyExW( HKEY hkey, LPCWSTR name, DWORD reserved, LPWSTR class,
158 DWORD options, REGSAM access, SECURITY_ATTRIBUTES *sa,
159 PHKEY retkey, LPDWORD dispos )
160 {
161 OBJECT_ATTRIBUTES attr;
162 UNICODE_STRING nameW, classW;
163
164 if (reserved) return ERROR_INVALID_PARAMETER;
165 if (!(access & KEY_ACCESS_MASK) || (access & ~KEY_ACCESS_MASK)) return ERROR_ACCESS_DENIED;
166 if (!(hkey = get_special_root_hkey( hkey ))) return ERROR_INVALID_HANDLE;
167
168 attr.Length = sizeof(attr);
169 attr.RootDirectory = hkey;
170 attr.ObjectName = &nameW;
171 attr.Attributes = 0;
172 attr.SecurityDescriptor = NULL;
173 attr.SecurityQualityOfService = NULL;
174 RtlInitUnicodeString( &nameW, name );
175 RtlInitUnicodeString( &classW, class );
176
177 return RtlNtStatusToDosError( NtCreateKey( (PHANDLE)retkey, access, &attr, 0,
178 &classW, options, dispos ) );
179 }
180
181
182 /******************************************************************************
183 * RegCreateKeyExA [ADVAPI32.@]
184 *
185 * Open a registry key, creating it if it doesn't exist.
186 *
187 * PARAMS
188 * hkey [I] Handle of the parent registry key
189 * name [I] Name of the new key to open or create
190 * reserved [I] Reserved, pass 0
191 * class [I] The object type of the new key
192 * options [I] Flags controlling the key creation (REG_OPTION_* flags from "winnt.h")
193 * access [I] Access level desired
194 * sa [I] Security attributes for the key
195 * retkey [O] Destination for the resulting handle
196 * dispos [O] Receives REG_CREATED_NEW_KEY or REG_OPENED_EXISTING_KEY
197 *
198 * RETURNS
199 * Success: ERROR_SUCCESS.
200 * Failure: A standard Win32 error code. retkey remains untouched.
201 *
202 * FIXME
203 * MAXIMUM_ALLOWED in access mask not supported by server
204 */
205 LONG WINAPI RegCreateKeyExA( HKEY hkey, LPCSTR name, DWORD reserved, LPSTR class,
206 DWORD options, REGSAM access, SECURITY_ATTRIBUTES *sa,
207 PHKEY retkey, LPDWORD dispos )
208 {
209 OBJECT_ATTRIBUTES attr;
210 UNICODE_STRING classW;
211 ANSI_STRING nameA, classA;
212 NTSTATUS status;
213
214 if (reserved) return ERROR_INVALID_PARAMETER;
215 if (!is_version_nt())
216 {
217 access = KEY_ALL_ACCESS; /* Win95 ignores the access mask */
218 if (name && *name == '\\') name++; /* win9x,ME ignores one (and only one) beginning backslash */
219 }
220 else if (!(access & KEY_ACCESS_MASK) || (access & ~KEY_ACCESS_MASK)) return ERROR_ACCESS_DENIED;
221 if (!(hkey = get_special_root_hkey( hkey ))) return ERROR_INVALID_HANDLE;
222
223 attr.Length = sizeof(attr);
224 attr.RootDirectory = hkey;
225 attr.ObjectName = &NtCurrentTeb()->StaticUnicodeString;
226 attr.Attributes = 0;
227 attr.SecurityDescriptor = NULL;
228 attr.SecurityQualityOfService = NULL;
229 RtlInitAnsiString( &nameA, name );
230 RtlInitAnsiString( &classA, class );
231
232 if (!(status = RtlAnsiStringToUnicodeString( &NtCurrentTeb()->StaticUnicodeString,
233 &nameA, FALSE )))
234 {
235 if (!(status = RtlAnsiStringToUnicodeString( &classW, &classA, TRUE )))
236 {
237 status = NtCreateKey( (PHANDLE)retkey, access, &attr, 0, &classW, options, dispos );
238 RtlFreeUnicodeString( &classW );
239 }
240 }
241 return RtlNtStatusToDosError( status );
242 }
243
244
245 /******************************************************************************
246 * RegCreateKeyW [ADVAPI32.@]
247 *
248 * Creates the specified reg key.
249 *
250 * PARAMS
251 * hKey [I] Handle to an open key.
252 * lpSubKey [I] Name of a key that will be opened or created.
253 * phkResult [O] Receives a handle to the opened or created key.
254 *
255 * RETURNS
256 * Success: ERROR_SUCCESS
257 * Failure: nonzero error code defined in Winerror.h
258 */
259 LONG WINAPI RegCreateKeyW( HKEY hkey, LPCWSTR lpSubKey, PHKEY phkResult )
260 {
261 /* FIXME: previous implementation converted ERROR_INVALID_HANDLE to ERROR_BADKEY, */
262 /* but at least my version of NT (4.0 SP5) doesn't do this. -- AJ */
263 return RegCreateKeyExW( hkey, lpSubKey, 0, NULL, REG_OPTION_NON_VOLATILE,
264 KEY_ALL_ACCESS, NULL, phkResult, NULL );
265 }
266
267
268 /******************************************************************************
269 * RegCreateKeyA [ADVAPI32.@]
270 *
271 * See RegCreateKeyW.
272 */
273 LONG WINAPI RegCreateKeyA( HKEY hkey, LPCSTR lpSubKey, PHKEY phkResult )
274 {
275 return RegCreateKeyExA( hkey, lpSubKey, 0, NULL, REG_OPTION_NON_VOLATILE,
276 KEY_ALL_ACCESS, NULL, phkResult, NULL );
277 }
278
279
280
281 /******************************************************************************
282 * RegOpenKeyExW [ADVAPI32.@]
283 *
284 * See RegOpenKeyExA.
285 */
286 LONG WINAPI RegOpenKeyExW( HKEY hkey, LPCWSTR name, DWORD reserved, REGSAM access, PHKEY retkey )
287 {
288 OBJECT_ATTRIBUTES attr;
289 UNICODE_STRING nameW;
290
291 if (!(hkey = get_special_root_hkey( hkey ))) return ERROR_INVALID_HANDLE;
292
293 attr.Length = sizeof(attr);
294 attr.RootDirectory = hkey;
295 attr.ObjectName = &nameW;
296 attr.Attributes = 0;
297 attr.SecurityDescriptor = NULL;
298 attr.SecurityQualityOfService = NULL;
299 RtlInitUnicodeString( &nameW, name );
300 return RtlNtStatusToDosError( NtOpenKey( (PHANDLE)retkey, access, &attr ) );
301 }
302
303
304 /******************************************************************************
305 * RegOpenKeyExA [ADVAPI32.@]
306 *
307 * Open a registry key.
308 *
309 * PARAMS
310 * hkey [I] Handle of open key
311 * name [I] Name of subkey to open
312 * reserved [I] Reserved - must be zero
313 * access [I] Security access mask
314 * retkey [O] Handle to open key
315 *
316 * RETURNS
317 * Success: ERROR_SUCCESS
318 * Failure: A standard Win32 error code. retkey is set to 0.
319 *
320 * NOTES
321 * Unlike RegCreateKeyExA(), this function will not create the key if it
322 * does not exist.
323 */
324 LONG WINAPI RegOpenKeyExA( HKEY hkey, LPCSTR name, DWORD reserved, REGSAM access, PHKEY retkey )
325 {
326 OBJECT_ATTRIBUTES attr;
327 STRING nameA;
328 NTSTATUS status;
329
330 if (!is_version_nt()) access = KEY_ALL_ACCESS; /* Win95 ignores the access mask */
331
332 if (!(hkey = get_special_root_hkey( hkey ))) return ERROR_INVALID_HANDLE;
333
334 attr.Length = sizeof(attr);
335 attr.RootDirectory = hkey;
336 attr.ObjectName = &NtCurrentTeb()->StaticUnicodeString;
337 attr.Attributes = 0;
338 attr.SecurityDescriptor = NULL;
339 attr.SecurityQualityOfService = NULL;
340
341 RtlInitAnsiString( &nameA, name );
342 if (!(status = RtlAnsiStringToUnicodeString( &NtCurrentTeb()->StaticUnicodeString,
343 &nameA, FALSE )))
344 {
345 status = NtOpenKey( (PHANDLE)retkey, access, &attr );
346 }
347 return RtlNtStatusToDosError( status );
348 }
349
350
351 /******************************************************************************
352 * RegOpenKeyW [ADVAPI32.@]
353 *
354 * See RegOpenKeyA.
355 */
356 LONG WINAPI RegOpenKeyW( HKEY hkey, LPCWSTR name, PHKEY retkey )
357 {
358 if (!name || !*name)
359 {
360 *retkey = hkey;
361 return ERROR_SUCCESS;
362 }
363 return RegOpenKeyExW( hkey, name, 0, KEY_ALL_ACCESS, retkey );
364 }
365
366
367 /******************************************************************************
368 * RegOpenKeyA [ADVAPI32.@]
369 *
370 * Open a registry key.
371 *
372 * PARAMS
373 * hkey [I] Handle of parent key to open the new key under
374 * name [I] Name of the key under hkey to open
375 * retkey [O] Destination for the resulting Handle
376 *
377 * RETURNS
378 * Success: ERROR_SUCCESS
379 * Failure: A standard Win32 error code. retkey is set to 0.
380 */
381 LONG WINAPI RegOpenKeyA( HKEY hkey, LPCSTR name, PHKEY retkey )
382 {
383 if (!name || !*name)
384 {
385 *retkey = hkey;
386 return ERROR_SUCCESS;
387 }
388 return RegOpenKeyExA( hkey, name, 0, KEY_ALL_ACCESS, retkey );
389 }
390
391
392 /******************************************************************************
393 * RegOpenCurrentUser [ADVAPI32.@]
394 *
395 * Get a handle to the HKEY_CURRENT_USER key for the user
396 * the current thread is impersonating.
397 *
398 * PARAMS
399 * access [I] Desired access rights to the key
400 * retkey [O] Handle to the opened key
401 *
402 * RETURNS
403 * Success: ERROR_SUCCESS
404 * Failure: nonzero error code from Winerror.h
405 *
406 * FIXME
407 * This function is supposed to retrieve a handle to the
408 * HKEY_CURRENT_USER for the user the current thread is impersonating.
409 * Since Wine does not currently allow threads to impersonate other users,
410 * this stub should work fine.
411 */
412 LONG WINAPI RegOpenCurrentUser( REGSAM access, PHKEY retkey )
413 {
414 return RegOpenKeyExA( HKEY_CURRENT_USER, "", 0, access, retkey );
415 }
416
417
418
419 /******************************************************************************
420 * RegEnumKeyExW [ADVAPI32.@]
421 *
422 * Enumerate subkeys of the specified open registry key.
423 *
424 * PARAMS
425 * hkey [I] Handle to key to enumerate
426 * index [I] Index of subkey to enumerate
427 * name [O] Buffer for subkey name
428 * name_len [O] Size of subkey buffer
429 * reserved [I] Reserved
430 * class [O] Buffer for class string
431 * class_len [O] Size of class buffer
432 * ft [O] Time key last written to
433 *
434 * RETURNS
435 * Success: ERROR_SUCCESS
436 * Failure: System error code. If there are no more subkeys available, the
437 * function returns ERROR_NO_MORE_ITEMS.
438 */
439 LONG WINAPI RegEnumKeyExW( HKEY hkey, DWORD index, LPWSTR name, LPDWORD name_len,
440 LPDWORD reserved, LPWSTR 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,%d,%p,%p(%d),%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 = info->NameLength / sizeof(WCHAR);
470 DWORD cls_len = info->ClassLength / sizeof(WCHAR);
471
472 if (ft) *ft = *(FILETIME *)&info->LastWriteTime;
473
474 if (len >= *name_len || (class && class_len && (cls_len >= *class_len)))
475 status = STATUS_BUFFER_OVERFLOW;
476 else
477 {
478 *name_len = len;
479 memcpy( name, info->Name, info->NameLength );
480 name[len] = 0;
481 if (class_len)
482 {
483 *class_len = cls_len;
484 if (class)
485 {
486 memcpy( class, buf_ptr + info->ClassOffset, info->ClassLength );
487 class[cls_len] = 0;
488 }
489 }
490 }
491 }
492
493 if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
494 return RtlNtStatusToDosError( status );
495 }
496
497
498 /******************************************************************************
499 * RegEnumKeyExA [ADVAPI32.@]
500 *
501 * See RegEnumKeyExW.
502 */
503 LONG WINAPI RegEnumKeyExA( HKEY hkey, DWORD index, LPSTR name, LPDWORD name_len,
504 LPDWORD reserved, LPSTR class, LPDWORD class_len, FILETIME *ft )
505 {
506 NTSTATUS status;
507 char buffer[256], *buf_ptr = buffer;
508 KEY_NODE_INFORMATION *info = (KEY_NODE_INFORMATION *)buffer;
509 DWORD total_size;
510
511 TRACE( "(%p,%d,%p,%p(%d),%p,%p,%p,%p)\n", hkey, index, name, name_len,
512 name_len ? *name_len : -1, reserved, class, class_len, ft );
513
514 if (reserved) return ERROR_INVALID_PARAMETER;
515 if (!(hkey = get_special_root_hkey( hkey ))) return ERROR_INVALID_HANDLE;
516
517 status = NtEnumerateKey( hkey, index, KeyNodeInformation,
518 buffer, sizeof(buffer), &total_size );
519
520 while (status == STATUS_BUFFER_OVERFLOW)
521 {
522 /* retry with a dynamically allocated buffer */
523 if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
524 if (!(buf_ptr = HeapAlloc( GetProcessHeap(), 0, total_size )))
525 return ERROR_NOT_ENOUGH_MEMORY;
526 info = (KEY_NODE_INFORMATION *)buf_ptr;
527 status = NtEnumerateKey( hkey, index, KeyNodeInformation,
528 buf_ptr, total_size, &total_size );
529 }
530
531 if (!status)
532 {
533 DWORD len, cls_len;
534
535 RtlUnicodeToMultiByteSize( &len, info->Name, info->NameLength );
536 RtlUnicodeToMultiByteSize( &cls_len, (WCHAR *)(buf_ptr + info->ClassOffset),
537 info->ClassLength );
538 if (ft) *ft = *(FILETIME *)&info->LastWriteTime;
539
540 if (len >= *name_len || (class && class_len && (cls_len >= *class_len)))
541 status = STATUS_BUFFER_OVERFLOW;
542 else
543 {
544 *name_len = len;
545 RtlUnicodeToMultiByteN( name, len, NULL, info->Name, info->NameLength );
546 name[len] = 0;
547 if (class_len)
548 {
549 *class_len = cls_len;
550 if (class)
551 {
552 RtlUnicodeToMultiByteN( class, cls_len, NULL,
553 (WCHAR *)(buf_ptr + info->ClassOffset),
554 info->ClassLength );
555 class[cls_len] = 0;
556 }
557 }
558 }
559 }
560
561 if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
562 return RtlNtStatusToDosError( status );
563 }
564
565
566 /******************************************************************************
567 * RegEnumKeyW [ADVAPI32.@]
568 *
569 * Enumerates subkyes of the specified open reg key.
570 *
571 * PARAMS
572 * hKey [I] Handle to an open key.
573 * dwIndex [I] Index of the subkey of hKey to retrieve.
574 * lpName [O] Name of the subkey.
575 * cchName [I] Size of lpName in TCHARS.
576 *
577 * RETURNS
578 * Success: ERROR_SUCCESS
579 * Failure: system error code. If there are no more subkeys available, the
580 * function returns ERROR_NO_MORE_ITEMS.
581 */
582 LONG WINAPI RegEnumKeyW( HKEY hkey, DWORD index, LPWSTR name, DWORD name_len )
583 {
584 return RegEnumKeyExW( hkey, index, name, &name_len, NULL, NULL, NULL, NULL );
585 }
586
587
588 /******************************************************************************
589 * RegEnumKeyA [ADVAPI32.@]
590 *
591 * See RegEnumKeyW.
592 */
593 LONG WINAPI RegEnumKeyA( HKEY hkey, DWORD index, LPSTR name, DWORD name_len )
594 {
595 return RegEnumKeyExA( hkey, index, name, &name_len, NULL, NULL, NULL, NULL );
596 }
597
598
599 /******************************************************************************
600 * RegQueryInfoKeyW [ADVAPI32.@]
601 *
602 * Retrieves information about the specified registry key.
603 *
604 * PARAMS
605 * hkey [I] Handle to key to query
606 * class [O] Buffer for class string
607 * class_len [O] Size of class string buffer
608 * reserved [I] Reserved
609 * subkeys [O] Buffer for number of subkeys
610 * max_subkey [O] Buffer for longest subkey name length
611 * max_class [O] Buffer for longest class string length
612 * values [O] Buffer for number of value entries
613 * max_value [O] Buffer for longest value name length
614 * max_data [O] Buffer for longest value data length
615 * security [O] Buffer for security descriptor length
616 * modif [O] Modification time
617 *
618 * RETURNS
619 * Success: ERROR_SUCCESS
620 * Failure: system error code.
621 *
622 * NOTES
623 * - win95 allows class to be valid and class_len to be NULL
624 * - winnt returns ERROR_INVALID_PARAMETER if class is valid and class_len is NULL
625 * - both allow class to be NULL and class_len to be NULL
626 * (it's hard to test validity, so test !NULL instead)
627 */
628 LONG WINAPI RegQueryInfoKeyW( HKEY hkey, LPWSTR class, LPDWORD class_len, LPDWORD reserved,
629 LPDWORD subkeys, LPDWORD max_subkey, LPDWORD max_class,
630 LPDWORD values, LPDWORD max_value, LPDWORD max_data,
631 LPDWORD security, FILETIME *modif )
632 {
633 NTSTATUS status;
634 char buffer[256], *buf_ptr = buffer;
635 KEY_FULL_INFORMATION *info = (KEY_FULL_INFORMATION *)buffer;
636 DWORD total_size;
637
638 TRACE( "(%p,%p,%d,%p,%p,%p,%p,%p,%p,%p,%p)\n", hkey, class, class_len ? *class_len : 0,
639 reserved, subkeys, max_subkey, values, max_value, max_data, security, modif );
640
641 if (class && !class_len && is_version_nt()) return ERROR_INVALID_PARAMETER;
642 if (!(hkey = get_special_root_hkey( hkey ))) return ERROR_INVALID_HANDLE;
643
644 status = NtQueryKey( hkey, KeyFullInformation, buffer, sizeof(buffer), &total_size );
645 if (status && status != STATUS_BUFFER_OVERFLOW) goto done;
646
647 if (class)
648 {
649 /* retry with a dynamically allocated buffer */
650 while (status == STATUS_BUFFER_OVERFLOW)
651 {
652 if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
653 if (!(buf_ptr = HeapAlloc( GetProcessHeap(), 0, total_size )))
654 return ERROR_NOT_ENOUGH_MEMORY;
655 info = (KEY_FULL_INFORMATION *)buf_ptr;
656 status = NtQueryKey( hkey, KeyFullInformation, buf_ptr, total_size, &total_size );
657 }
658
659 if (status) goto done;
660
661 if (class_len && (info->ClassLength/sizeof(WCHAR) + 1 > *class_len))
662 {
663 status = STATUS_BUFFER_OVERFLOW;
664 }
665 else
666 {
667 memcpy( class, buf_ptr + info->ClassOffset, info->ClassLength );
668 class[info->ClassLength/sizeof(WCHAR)] = 0;
669 }
670 }
671 else status = STATUS_SUCCESS;
672
673 if (class_len) *class_len = info->ClassLength / sizeof(WCHAR);
674 if (subkeys) *subkeys = info->SubKeys;
675 if (max_subkey) *max_subkey = info->MaxNameLen;
676 if (max_class) *max_class = info->MaxClassLen;
677 if (values) *values = info->Values;
678 if (max_value) *max_value = info->MaxValueNameLen;
679 if (max_data) *max_data = info->MaxValueDataLen;
680 if (modif) *modif = *(FILETIME *)&info->LastWriteTime;
681
682 done:
683 if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
684 return RtlNtStatusToDosError( status );
685 }
686
687
688 /******************************************************************************
689 * RegQueryMultipleValuesA [ADVAPI32.@]
690 *
691 * Retrieves the type and data for a list of value names associated with a key.
692 *
693 * PARAMS
694 * hKey [I] Handle to an open key.
695 * val_list [O] Array of VALENT structures that describes the entries.
696 * num_vals [I] Number of elements in val_list.
697 * lpValueBuf [O] Pointer to a buffer that receives the data for each value.
698 * ldwTotsize [I/O] Size of lpValueBuf.
699 *
700 * RETURNS
701 * Success: ERROR_SUCCESS. ldwTotsize contains num bytes copied.
702 * Failure: nonzero error code from Winerror.h ldwTotsize contains num needed
703 * bytes.
704 */
705 LONG WINAPI RegQueryMultipleValuesA( HKEY hkey, PVALENTA val_list, DWORD num_vals,
706 LPSTR lpValueBuf, LPDWORD ldwTotsize )
707 {
708 unsigned int i;
709 DWORD maxBytes = *ldwTotsize;
710 HRESULT status;
711 LPSTR bufptr = lpValueBuf;
712 *ldwTotsize = 0;
713
714 TRACE("(%p,%p,%d,%p,%p=%d)\n", hkey, val_list, num_vals, lpValueBuf, ldwTotsize, *ldwTotsize);
715
716 for(i=0; i < num_vals; ++i)
717 {
718
719 val_list[i].ve_valuelen=0;
720 status = RegQueryValueExA(hkey, val_list[i].ve_valuename, NULL, NULL, NULL, &val_list[i].ve_valuelen);
721 if(status != ERROR_SUCCESS)
722 {
723 return status;
724 }
725
726 if(lpValueBuf != NULL && *ldwTotsize + val_list[i].ve_valuelen <= maxBytes)
727 {
728 status = RegQueryValueExA(hkey, val_list[i].ve_valuename, NULL, &val_list[i].ve_type,
729 (LPBYTE)bufptr, &val_list[i].ve_valuelen);
730 if(status != ERROR_SUCCESS)
731 {
732 return status;
733 }
734
735 val_list[i].ve_valueptr = (DWORD_PTR)bufptr;
736
737 bufptr += val_list[i].ve_valuelen;
738 }
739
740 *ldwTotsize += val_list[i].ve_valuelen;
741 }
742 return lpValueBuf != NULL && *ldwTotsize <= maxBytes ? ERROR_SUCCESS : ERROR_MORE_DATA;
743 }
744
745
746 /******************************************************************************
747 * RegQueryMultipleValuesW [ADVAPI32.@]
748 *
749 * See RegQueryMultipleValuesA.
750 */
751 LONG WINAPI RegQueryMultipleValuesW( HKEY hkey, PVALENTW val_list, DWORD num_vals,
752 LPWSTR lpValueBuf, LPDWORD ldwTotsize )
753 {
754 unsigned int i;
755 DWORD maxBytes = *ldwTotsize;
756 HRESULT status;
757 LPSTR bufptr = (LPSTR)lpValueBuf;
758 *ldwTotsize = 0;
759
760 TRACE("(%p,%p,%d,%p,%p=%d)\n", hkey, val_list, num_vals, lpValueBuf, ldwTotsize, *ldwTotsize);
761
762 for(i=0; i < num_vals; ++i)
763 {
764 val_list[i].ve_valuelen=0;
765 status = RegQueryValueExW(hkey, val_list[i].ve_valuename, NULL, NULL, NULL, &val_list[i].ve_valuelen);
766 if(status != ERROR_SUCCESS)
767 {
768 return status;
769 }
770
771 if(lpValueBuf != NULL && *ldwTotsize + val_list[i].ve_valuelen <= maxBytes)
772 {
773 status = RegQueryValueExW(hkey, val_list[i].ve_valuename, NULL, &val_list[i].ve_type,
774 (LPBYTE)bufptr, &val_list[i].ve_valuelen);
775 if(status != ERROR_SUCCESS)
776 {
777 return status;
778 }
779
780 val_list[i].ve_valueptr = (DWORD_PTR)bufptr;
781
782 bufptr += val_list[i].ve_valuelen;
783 }
784
785 *ldwTotsize += val_list[i].ve_valuelen;
786 }
787 return lpValueBuf != NULL && *ldwTotsize <= maxBytes ? ERROR_SUCCESS : ERROR_MORE_DATA;
788 }
789
790 /******************************************************************************
791 * RegQueryInfoKeyA [ADVAPI32.@]
792 *
793 * Retrieves information about a registry key.
794 *
795 * PARAMS
796 * hKey [I] Handle to an open key.
797 * lpClass [O] Class string of the key.
798 * lpcClass [I/O] size of lpClass.
799 * lpReserved [I] Reserved; must be NULL.
800 * lpcSubKeys [O] Number of subkeys contained by the key.
801 * lpcMaxSubKeyLen [O] Size of the key's subkey with the longest name.
802 * lpcMaxClassLen [O] Size of the longest string specifying a subkey
803 * class in TCHARS.
804 * lpcValues [O] Number of values associated with the key.
805 * lpcMaxValueNameLen [O] Size of the key's longest value name in TCHARS.
806 * lpcMaxValueLen [O] Longest data component among the key's values
807 * lpcbSecurityDescriptor [O] Size of the key's security descriptor.
808 * lpftLastWriteTime [O] FILETIME strucutre that is the last write time.
809 *
810 * RETURNS
811 * Success: ERROR_SUCCESS
812 * Failure: nonzero error code from Winerror.h
813 */
814 LONG WINAPI RegQueryInfoKeyA( HKEY hkey, LPSTR class, LPDWORD class_len, LPDWORD reserved,
815 LPDWORD subkeys, LPDWORD max_subkey, LPDWORD max_class,
816 LPDWORD values, LPDWORD max_value, LPDWORD max_data,
817 LPDWORD security, FILETIME *modif )
818 {
819 NTSTATUS status;
820 char buffer[256], *buf_ptr = buffer;
821 KEY_FULL_INFORMATION *info = (KEY_FULL_INFORMATION *)buffer;
822 DWORD total_size, len;
823
824 TRACE( "(%p,%p,%d,%p,%p,%p,%p,%p,%p,%p,%p)\n", hkey, class, class_len ? *class_len : 0,
825 reserved, subkeys, max_subkey, values, max_value, max_data, security, modif );
826
827 if (class && !class_len && is_version_nt()) return ERROR_INVALID_PARAMETER;
828 if (!(hkey = get_special_root_hkey( hkey ))) return ERROR_INVALID_HANDLE;
829
830 status = NtQueryKey( hkey, KeyFullInformation, buffer, sizeof(buffer), &total_size );
831 if (status && status != STATUS_BUFFER_OVERFLOW) goto done;
832
833 if (class || class_len)
834 {
835 /* retry with a dynamically allocated buffer */
836 while (status == STATUS_BUFFER_OVERFLOW)
837 {
838 if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
839 if (!(buf_ptr = HeapAlloc( GetProcessHeap(), 0, total_size )))
840 return ERROR_NOT_ENOUGH_MEMORY;
841 info = (KEY_FULL_INFORMATION *)buf_ptr;
842 status = NtQueryKey( hkey, KeyFullInformation, buf_ptr, total_size, &total_size );
843 }
844
845 if (status) goto done;
846
847 RtlUnicodeToMultiByteSize( &len, (WCHAR *)(buf_ptr + info->ClassOffset), info->ClassLength);
848 if (class_len)
849 {
850 if (len + 1 > *class_len) status = STATUS_BUFFER_OVERFLOW;
851 *class_len = len;
852 }
853 if (class && !status)
854 {
855 RtlUnicodeToMultiByteN( class, len, NULL, (WCHAR *)(buf_ptr + info->ClassOffset),
856 info->ClassLength );
857 class[len] = 0;
858 }
859 }
860 else status = STATUS_SUCCESS;
861
862 if (subkeys) *subkeys = info->SubKeys;
863 if (max_subkey) *max_subkey = info->MaxNameLen;
864 if (max_class) *max_class = info->MaxClassLen;
865 if (values) *values = info->Values;
866 if (max_value) *max_value = info->MaxValueNameLen;
867 if (max_data) *max_data = info->MaxValueDataLen;
868 if (modif) *modif = *(FILETIME *)&info->LastWriteTime;
869
870 done:
871 if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
872 return RtlNtStatusToDosError( status );
873 }
874
875
876 /******************************************************************************
877 * RegCloseKey [ADVAPI32.@]
878 *
879 * Close an open registry key.
880 *
881 * PARAMS
882 * hkey [I] Handle of key to close
883 *
884 * RETURNS
885 * Success: ERROR_SUCCESS
886 * Failure: Error code
887 */
888 LONG WINAPI RegCloseKey( HKEY hkey )
889 {
890 if (!hkey) return ERROR_INVALID_HANDLE;
891 if (hkey >= (HKEY)0x80000000) return ERROR_SUCCESS;
892 return RtlNtStatusToDosError( NtClose( hkey ) );
893 }
894
895
896 /******************************************************************************
897 * RegDeleteKeyW [ADVAPI32.@]
898 *
899 * See RegDeleteKeyA.
900 */
901 LONG WINAPI RegDeleteKeyW( HKEY hkey, LPCWSTR name )
902 {
903 DWORD ret;
904 HKEY tmp;
905
906 if (!name) return ERROR_INVALID_PARAMETER;
907
908 if (!(hkey = get_special_root_hkey( hkey ))) return ERROR_INVALID_HANDLE;
909
910 if (!(ret = RegOpenKeyExW( hkey, name, 0, DELETE, &tmp )))
911 {
912 ret = RtlNtStatusToDosError( NtDeleteKey( tmp ) );
913 RegCloseKey( tmp );
914 }
915 TRACE("%s ret=%08x\n", debugstr_w(name), ret);
916 return ret;
917 }
918
919
920 /******************************************************************************
921 * RegDeleteKeyA [ADVAPI32.@]
922 *
923 * Delete a registry key.
924 *
925 * PARAMS
926 * hkey [I] Handle to parent key containing the key to delete
927 * name [I] Name of the key user hkey to delete
928 *
929 * NOTES
930 *
931 * MSDN is wrong when it says that hkey must be opened with the DELETE access
932 * right. In reality, it opens a new handle with DELETE access.
933 *
934 * RETURNS
935 * Success: ERROR_SUCCESS
936 * Failure: Error code
937 */
938 LONG WINAPI RegDeleteKeyA( HKEY hkey, LPCSTR name )
939 {
940 DWORD ret;
941 HKEY tmp;
942
943 if (!name) return ERROR_INVALID_PARAMETER;
944
945 if (!(hkey = get_special_root_hkey( hkey ))) return ERROR_INVALID_HANDLE;
946
947 if (!(ret = RegOpenKeyExA( hkey, name, 0, DELETE, &tmp )))
948 {
949 if (!is_version_nt()) /* win95 does recursive key deletes */
950 {
951 CHAR name[MAX_PATH];
952
953 while(!RegEnumKeyA(tmp, 0, name, sizeof(name)))
954 {
955 if(RegDeleteKeyA(tmp, name)) /* recurse */
956 break;
957 }
958 }
959 ret = RtlNtStatusToDosError( NtDeleteKey( tmp ) );
960 RegCloseKey( tmp );
961 }
962 TRACE("%s ret=%08x\n", debugstr_a(name), ret);
963 return ret;
964 }
965
966
967
968 /******************************************************************************
969 * RegSetValueExW [ADVAPI32.@]
970 *
971 * Set the data and contents of a registry value.
972 *
973 * PARAMS
974 * hkey [I] Handle of key to set value for
975 * name [I] Name of value to set
976 * reserved [I] Reserved, must be zero
977 * type [I] Type of the value being set
978 * data [I] The new contents of the value to set
979 * count [I] Size of data
980 *
981 * RETURNS
982 * Success: ERROR_SUCCESS
983 * Failure: Error code
984 */
985 LONG WINAPI RegSetValueExW( HKEY hkey, LPCWSTR name, DWORD reserved,
986 DWORD type, CONST BYTE *data, DWORD count )
987 {
988 UNICODE_STRING nameW;
989
990 /* no need for version check, not implemented on win9x anyway */
991 if (count && is_string(type))
992 {
993 LPCWSTR str = (LPCWSTR)data;
994 /* if user forgot to count terminating null, add it (yes NT does this) */
995 if (str[count / sizeof(WCHAR) - 1] && !str[count / sizeof(WCHAR)])
996 count += sizeof(WCHAR);
997 }
998 if (!(hkey = get_special_root_hkey( hkey ))) return ERROR_INVALID_HANDLE;
999
1000 RtlInitUnicodeString( &nameW, name );
1001 return RtlNtStatusToDosError( NtSetValueKey( hkey, &nameW, 0, type, data, count ) );
1002 }
1003
1004
1005 /******************************************************************************
1006 * RegSetValueExA [ADVAPI32.@]
1007 *
1008 * See RegSetValueExW.
1009 *
1010 * NOTES
1011 * win95 does not care about count for REG_SZ and finds out the len by itself (js)
1012 * NT does definitely care (aj)
1013 */
1014 LONG WINAPI RegSetValueExA( HKEY hkey, LPCSTR name, DWORD reserved, DWORD type,
1015 CONST BYTE *data, DWORD count )
1016 {
1017 ANSI_STRING nameA;
1018 WCHAR *dataW = NULL;
1019 NTSTATUS status;
1020
1021 if (!is_version_nt()) /* win95 */
1022 {
1023 if (type == REG_SZ)
1024 {
1025 if (!data) return ERROR_INVALID_PARAMETER;
1026 count = strlen((const char *)data) + 1;
1027 }
1028 }
1029 else if (count && is_string(type))
1030 {
1031 /* if user forgot to count terminating null, add it (yes NT does this) */
1032 if (data[count-1] && !data[count]) count++;
1033 }
1034
1035 if (!(hkey = get_special_root_hkey( hkey ))) return ERROR_INVALID_HANDLE;
1036
1037 if (is_string( type )) /* need to convert to Unicode */
1038 {
1039 DWORD lenW;
1040 RtlMultiByteToUnicodeSize( &lenW, (const char *)data, count );
1041 if (!(dataW = HeapAlloc( GetProcessHeap(), 0, lenW ))) return ERROR_OUTOFMEMORY;
1042 RtlMultiByteToUnicodeN( dataW, lenW, NULL, (const char *)data, count );
1043 count = lenW;
1044 data = (BYTE *)dataW;
1045 }
1046
1047 RtlInitAnsiString( &nameA, name );
1048 if (!(status = RtlAnsiStringToUnicodeString( &NtCurrentTeb()->StaticUnicodeString,
1049 &nameA, FALSE )))
1050 {
1051 status = NtSetValueKey( hkey, &NtCurrentTeb()->StaticUnicodeString, 0, type, data, count );
1052 }
1053 HeapFree( GetProcessHeap(), 0, dataW );
1054 return RtlNtStatusToDosError( status );
1055 }
1056
1057
1058 /******************************************************************************
1059 * RegSetValueW [ADVAPI32.@]
1060 *
1061 * Sets the data for the default or unnamed value of a reg key.
1062 *
1063 * PARAMS
1064 * hKey [I] Handle to an open key.
1065 * lpSubKey [I] Name of a subkey of hKey.
1066 * dwType [I] Type of information to store.
1067 * lpData [I] String that contains the data to set for the default value.
1068 * cbData [I] Size of lpData.
1069 *
1070 * RETURNS
1071 * Success: ERROR_SUCCESS
1072 * Failure: nonzero error code from Winerror.h
1073 */
1074 LONG WINAPI RegSetValueW( HKEY hkey, LPCWSTR name, DWORD type, LPCWSTR data, DWORD count )
1075 {
1076 HKEY subkey = hkey;
1077 DWORD ret;
1078
1079 TRACE("(%p,%s,%d,%s,%d)\n", hkey, debugstr_w(name), type, debugstr_w(data), count );
1080
1081 if (type != REG_SZ) return ERROR_INVALID_PARAMETER;
1082
1083 if (name && name[0]) /* need to create the subkey */
1084 {
1085 if ((ret = RegCreateKeyW( hkey, name, &subkey )) != ERROR_SUCCESS) return ret;
1086 }
1087
1088 ret = RegSetValueExW( subkey, NULL, 0, REG_SZ, (const BYTE*)data,
1089 (strlenW( data ) + 1) * sizeof(WCHAR) );
1090 if (subkey != hkey) RegCloseKey( subkey );
1091 return ret;
1092 }
1093
1094
1095 /******************************************************************************
1096 * RegSetValueA [ADVAPI32.@]
1097 *
1098 * See RegSetValueW.
1099 */
1100 LONG WINAPI RegSetValueA( HKEY hkey, LPCSTR name, DWORD type, LPCSTR data, DWORD count )
1101 {
1102 HKEY subkey = hkey;
1103 DWORD ret;
1104
1105 TRACE("(%p,%s,%d,%s,%d)\n", hkey, debugstr_a(name), type, debugstr_a(data), count );
1106
1107 if (type != REG_SZ) return ERROR_INVALID_PARAMETER;
1108
1109 if (name && name[0]) /* need to create the subkey */
1110 {
1111 if ((ret = RegCreateKeyA( hkey, name, &subkey )) != ERROR_SUCCESS) return ret;
1112 }
1113 ret = RegSetValueExA( subkey, NULL, 0, REG_SZ, (const BYTE*)data, strlen(data)+1 );
1114 if (subkey != hkey) RegCloseKey( subkey );
1115 return ret;
1116 }
1117
1118
1119
1120 /******************************************************************************
1121 * RegQueryValueExW [ADVAPI32.@]
1122 *
1123 * See RegQueryValueExA.
1124 */
1125 LONG WINAPI RegQueryValueExW( HKEY hkey, LPCWSTR name, LPDWORD reserved, LPDWORD type,
1126 LPBYTE data, LPDWORD count )
1127 {
1128 NTSTATUS status;
1129 UNICODE_STRING name_str;
1130 DWORD total_size;
1131 char buffer[256], *buf_ptr = buffer;
1132 KEY_VALUE_PARTIAL_INFORMATION *info = (KEY_VALUE_PARTIAL_INFORMATION *)buffer;
1133 static const int info_size = offsetof( KEY_VALUE_PARTIAL_INFORMATION, Data );
1134
1135 TRACE("(%p,%s,%p,%p,%p,%p=%d)\n",
1136 hkey, debugstr_w(name), reserved, type, data, count,
1137 (count && data) ? *count : 0 );
1138
1139 if ((data && !count) || reserved) return ERROR_INVALID_PARAMETER;
1140 if (!(hkey = get_special_root_hkey( hkey ))) return ERROR_INVALID_HANDLE;
1141
1142 RtlInitUnicodeString( &name_str, name );
1143
1144 if (data) total_size = min( sizeof(buffer), *count + info_size );
1145 else
1146 {
1147 total_size = info_size;
1148 if (count) *count = 0;
1149 }
1150
1151 status = NtQueryValueKey( hkey, &name_str, KeyValuePartialInformation,
1152 buffer, total_size, &total_size );
1153 if (status && status != STATUS_BUFFER_OVERFLOW) goto done;
1154
1155 if (data)
1156 {
1157 /* retry with a dynamically allocated buffer */
1158 while (status == STATUS_BUFFER_OVERFLOW && total_size - info_size <= *count)
1159 {
1160 if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
1161 if (!(buf_ptr = HeapAlloc( GetProcessHeap(), 0, total_size )))
1162 return ERROR_NOT_ENOUGH_MEMORY;
1163 info = (KEY_VALUE_PARTIAL_INFORMATION *)buf_ptr;
1164 status = NtQueryValueKey( hkey, &name_str, KeyValuePartialInformation,
1165 buf_ptr, total_size, &total_size );
1166 }
1167
1168 if (!status)
1169 {
1170 memcpy( data, buf_ptr + info_size, total_size - info_size );
1171 /* if the type is REG_SZ and data is not 0-terminated
1172 * and there is enough space in the buffer NT appends a \0 */
1173 if (total_size - info_size <= *count-sizeof(WCHAR) && is_string(info->Type))
1174 {
1175 WCHAR *ptr = (WCHAR *)(data + total_size - info_size);
1176 if (ptr > (WCHAR *)data && ptr[-1]) *ptr = 0;
1177 }
1178 }
1179 else if (status != STATUS_BUFFER_OVERFLOW) goto done;
1180 }
1181 else status = STATUS_SUCCESS;
1182
1183 if (type) *type = info->Type;
1184 if (count) *count = total_size - info_size;
1185
1186 done:
1187 if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
1188 return RtlNtStatusToDosError(status);
1189 }
1190
1191
1192 /******************************************************************************
1193 * RegQueryValueExA [ADVAPI32.@]
1194 *
1195 * Get the type and contents of a specified value under with a key.
1196 *
1197 * PARAMS
1198 * hkey [I] Handle of the key to query
1199 * name [I] Name of value under hkey to query
1200 * reserved [I] Reserved - must be NULL
1201 * type [O] Destination for the value type, or NULL if not required
1202 * data [O] Destination for the values contents, or NULL if not required
1203 * count [I/O] Size of data, updated with the number of bytes returned
1204 *
1205 * RETURNS
1206 * Success: ERROR_SUCCESS. *count is updated with the number of bytes copied to data.
1207 * Failure: ERROR_INVALID_HANDLE, if hkey is invalid.
1208 * ERROR_INVALID_PARAMETER, if any other parameter is invalid.
1209 * ERROR_MORE_DATA, if on input *count is too small to hold the contents.
1210 *
1211 * NOTES
1212 * MSDN states that if data is too small it is partially filled. In reality
1213 * it remains untouched.
1214 */
1215 LONG WINAPI RegQueryValueExA( HKEY hkey, LPCSTR name, LPDWORD reserved, LPDWORD type,
1216 LPBYTE data, LPDWORD count )
1217 {
1218 NTSTATUS status;
1219 ANSI_STRING nameA;
1220 DWORD total_size;
1221 char buffer[256], *buf_ptr = buffer;
1222 KEY_VALUE_PARTIAL_INFORMATION *info = (KEY_VALUE_PARTIAL_INFORMATION *)buffer;
1223 static const int info_size = offsetof( KEY_VALUE_PARTIAL_INFORMATION, Data );
1224
1225 TRACE("(%p,%s,%p,%p,%p,%p=%d)\n",
1226 hkey, debugstr_a(name), reserved, type, data, count, count ? *count : 0 );
1227
1228 if ((data && !count) || reserved) return ERROR_INVALID_PARAMETER;
1229 if (!(hkey = get_special_root_hkey( hkey ))) return ERROR_INVALID_HANDLE;
1230
1231 if (!data && count) *count = 0;
1232
1233 /* this matches Win9x behaviour - NT sets *type to a random value */
1234 if (type) *type = REG_NONE;
1235
1236 RtlInitAnsiString( &nameA, name );
1237 if ((status = RtlAnsiStringToUnicodeString( &NtCurrentTeb()->StaticUnicodeString,
1238 &nameA, FALSE )))
1239 return RtlNtStatusToDosError(status);
1240
1241 status = NtQueryValueKey( hkey, &NtCurrentTeb()->StaticUnicodeString,
1242 KeyValuePartialInformation, buffer, sizeof(buffer), &total_size );
1243 if (status && status != STATUS_BUFFER_OVERFLOW) goto done;
1244
1245 /* we need to fetch the contents for a string type even if not requested,
1246 * because we need to compute the length of the ASCII string. */
1247 if (data || is_string(info->Type))
1248 {
1249 /* retry with a dynamically allocated buffer */
1250 while (status == STATUS_BUFFER_OVERFLOW)
1251 {
1252 if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
1253 if (!(buf_ptr = HeapAlloc( GetProcessHeap(), 0, total_size )))
1254 {
1255 status = STATUS_NO_MEMORY;
1256 goto done;
1257 }
1258 info = (KEY_VALUE_PARTIAL_INFORMATION *)buf_ptr;
1259 status = NtQueryValueKey( hkey, &NtCurrentTeb()->StaticUnicodeString,
1260 KeyValuePartialInformation, buf_ptr, total_size, &total_size );
1261 }
1262
1263 if (status) goto done;
1264
1265 if (is_string(info->Type))
1266 {
1267 DWORD len;
1268
1269 RtlUnicodeToMultiByteSize( &len, (WCHAR *)(buf_ptr + info_size),
1270 total_size - info_size );
1271 if (data && len)
1272 {
1273 if (len > *count) status = STATUS_BUFFER_OVERFLOW;
1274 else
1275 {
1276 RtlUnicodeToMultiByteN( (char*)data, len, NULL, (WCHAR *)(buf_ptr + info_size),
1277 total_size - info_size );
1278 /* if the type is REG_SZ and data is not 0-terminated
1279 * and there is enough space in the buffer NT appends a \0 */
1280 if (len < *count && data[len-1]) data[len] = 0;
1281 }
1282 }
1283 total_size = len + info_size;
1284 }
1285 else if (data)
1286 {
1287 if (total_size - info_size > *count) status = STATUS_BUFFER_OVERFLOW;
1288 else memcpy( data, buf_ptr + info_size, total_size - info_size );
1289 }
1290 }
1291 else status = STATUS_SUCCESS;
1292
1293 if (type) *type = info->Type;
1294 if (count) *count = total_size - info_size;
1295
1296 done:
1297 if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
1298 return RtlNtStatusToDosError(status);
1299 }
1300
1301
1302 /******************************************************************************
1303 * RegQueryValueW [ADVAPI32.@]
1304 *
1305 * Retrieves the data associated with the default or unnamed value of a key.
1306 *
1307 * PARAMS
1308 * hkey [I] Handle to an open key.
1309 * name [I] Name of the subkey of hKey.
1310 * data [O] Receives the string associated with the default value
1311 * of the key.
1312 * count [I/O] Size of lpValue in bytes.
1313 *
1314 * RETURNS
1315 * Success: ERROR_SUCCESS
1316 * Failure: nonzero error code from Winerror.h
1317 */
1318 LONG WINAPI RegQueryValueW( HKEY hkey, LPCWSTR name, LPWSTR data, LPLONG count )
1319 {
1320 DWORD ret;
1321 HKEY subkey = hkey;
1322
1323 TRACE("(%p,%s,%p,%d)\n", hkey, debugstr_w(name), data, count ? *count : 0 );
1324
1325 if (name && name[0])
1326 {
1327 if ((ret = RegOpenKeyW( hkey, name, &subkey )) != ERROR_SUCCESS) return ret;
1328 }
1329 ret = RegQueryValueExW( subkey, NULL, NULL, NULL, (LPBYTE)data, (LPDWORD)count );
1330 if (subkey != hkey) RegCloseKey( subkey );
1331 if (ret == ERROR_FILE_NOT_FOUND)
1332 {
1333 /* return empty string if default value not found */
1334 if (data) *data = 0;
1335 if (count) *count = sizeof(WCHAR);
1336 ret = ERROR_SUCCESS;
1337 }
1338 return ret;
1339 }
1340
1341
1342 /******************************************************************************
1343 * RegQueryValueA [ADVAPI32.@]
1344 *
1345 * See RegQueryValueW.
1346 */
1347 LONG WINAPI RegQueryValueA( HKEY hkey, LPCSTR name, LPSTR data, LPLONG count )
1348 {
1349 DWORD ret;
1350 HKEY subkey = hkey;
1351
1352 TRACE("(%p,%s,%p,%d)\n", hkey, debugstr_a(name), data, count ? *count : 0 );
1353
1354 if (name && name[0])
1355 {
1356 if ((ret = RegOpenKeyA( hkey, name, &subkey )) != ERROR_SUCCESS) return ret;
1357 }
1358 ret = RegQueryValueExA( subkey, NULL, NULL, NULL, (LPBYTE)data, (LPDWORD)count );
1359 if (subkey != hkey) RegCloseKey( subkey );
1360 if (ret == ERROR_FILE_NOT_FOUND)
1361 {
1362 /* return empty string if default value not found */
1363 if (data) *data = 0;
1364 if (count) *count = 1;
1365 ret = ERROR_SUCCESS;
1366 }
1367 return ret;
1368 }
1369
1370
1371 /******************************************************************************
1372 * ADVAPI_ApplyRestrictions [internal]
1373 *
1374 * Helper function for RegGetValueA/W.
1375 */
1376 static VOID ADVAPI_ApplyRestrictions( DWORD dwFlags, DWORD dwType,
1377 DWORD cbData, PLONG ret )
1378 {
1379 /* Check if the type is restricted by the passed flags */
1380 if (*ret == ERROR_SUCCESS || *ret == ERROR_MORE_DATA)
1381 {
1382 DWORD dwMask = 0;
1383
1384 switch (dwType)
1385 {
1386 case REG_NONE: dwMask = RRF_RT_REG_NONE; break;
1387 case REG_SZ: dwMask = RRF_RT_REG_SZ; break;
1388 case REG_EXPAND_SZ: dwMask = RRF_RT_REG_EXPAND_SZ; break;
1389 case REG_MULTI_SZ: dwMask = RRF_RT_REG_MULTI_SZ; break;
1390 case REG_BINARY: dwMask = RRF_RT_REG_BINARY; break;
1391 case REG_DWORD: dwMask = RRF_RT_REG_DWORD; break;
1392 case REG_QWORD: dwMask = RRF_RT_REG_QWORD; break;
1393 }
1394
1395 if (dwFlags & dwMask)
1396 {
1397 /* Type is not restricted, check for size mismatch */
1398 if (dwType == REG_BINARY)
1399 {
1400 DWORD cbExpect = 0;
1401
1402 if ((dwFlags & RRF_RT_DWORD) == RRF_RT_DWORD)
1403 cbExpect = 4;
1404 else if ((dwFlags & RRF_RT_DWORD) == RRF_RT_QWORD)
1405 cbExpect = 8;
1406
1407 if (cbExpect && cbData != cbExpect)
1408 *ret = ERROR_DATATYPE_MISMATCH;
1409 }
1410 }
1411 else *ret = ERROR_UNSUPPORTED_TYPE;
1412 }
1413 }
1414
1415
1416 /******************************************************************************
1417 * RegGetValueW [ADVAPI32.@]
1418 *
1419 * Retrieves the type and data for a value name associated with a key
1420 * optionally expanding it's content and restricting it's type.
1421 *
1422 * PARAMS
1423 * hKey [I] Handle to an open key.
1424 * pszSubKey [I] Name of the subkey of hKey.
1425 * pszValue [I] Name of value under hKey/szSubKey to query.
1426 * dwFlags [I] Flags restricting the value type to retrieve.
1427 * pdwType [O] Destination for the values type, may be NULL.
1428 * pvData [O] Destination for the values content, may be NULL.
1429 * pcbData [I/O] Size of pvData, updated with the size required to
1430 * retrieve the whole content.
1431 *
1432 * RETURNS
1433 * Success: ERROR_SUCCESS
1434 * Failure: nonzero error code from Winerror.h
1435 *
1436 * NOTES
1437 * - Unless RRF_NOEXPAND is specified REG_EXPAND_SZ is automatically expanded
1438 * and REG_SZ is retrieved instead.
1439 * - Restrictions are applied after expanding, using RRF_RT_REG_EXPAND_SZ
1440 * without RRF_NOEXPAND is thus not allowed.
1441 */
1442 LONG WINAPI RegGetValueW( HKEY hKey, LPCWSTR pszSubKey, LPCWSTR pszValue,
1443 DWORD dwFlags, LPDWORD pdwType, PVOID pvData,
1444 LPDWORD pcbData )
1445 {
1446 DWORD dwType, cbData = pcbData ? *pcbData : 0;
1447 PVOID pvBuf = NULL;
1448 LONG ret;
1449
1450 TRACE("(%p,%s,%s,%d,%p,%p,%p=%d)\n",
1451 hKey, debugstr_w(pszSubKey), debugstr_w(pszValue), dwFlags, pdwType,
1452 pvData, pcbData, cbData);
1453
1454 if ((dwFlags & RRF_RT_REG_EXPAND_SZ) && !(dwFlags & RRF_NOEXPAND))
1455 return ERROR_INVALID_PARAMETER;
1456
1457 if (pszSubKey && pszSubKey[0])
1458 {
1459 ret = RegOpenKeyExW(hKey, pszSubKey, 0, KEY_QUERY_VALUE, &hKey);
1460 if (ret != ERROR_SUCCESS) return ret;
1461 }
1462
1463 ret = RegQueryValueExW(hKey, pszValue, NULL, &dwType, pvData, &cbData);
1464
1465 /* If we are going to expand we need to read in the whole the value even
1466 * if the passed buffer was too small as the expanded string might be
1467 * smaller than the unexpanded one and could fit into cbData bytes. */
1468 if ((ret == ERROR_SUCCESS || ret == ERROR_MORE_DATA) &&
1469 (dwType == REG_EXPAND_SZ && !(dwFlags & RRF_NOEXPAND)))
1470 {
1471 do {
1472 HeapFree(GetProcessHeap(), 0, pvBuf);
1473
1474 pvBuf = HeapAlloc(GetProcessHeap(), 0, cbData);
1475 if (!pvBuf)
1476 {
1477 ret = ERROR_NOT_ENOUGH_MEMORY;
1478 break;
1479 }
1480
1481 if (ret == ERROR_MORE_DATA)
1482 ret = RegQueryValueExW(hKey, pszValue, NULL,
1483 &dwType, pvBuf, &cbData);
1484 else
1485 {
1486 /* Even if cbData was large enough we have to copy the
1487 * string since ExpandEnvironmentStrings can't handle
1488 * overlapping buffers. */
1489 CopyMemory(pvBuf, pvData, cbData);
1490 }
1491
1492 /* Both the type or the value itself could have been modified in
1493 * between so we have to keep retrying until the buffer is large
1494 * enough or we no longer have to expand the value. */
1495 } while (dwType == REG_EXPAND_SZ && ret == ERROR_MORE_DATA);
1496
1497 if (ret == ERROR_SUCCESS)
1498 {
1499 if (dwType == REG_EXPAND_SZ)
1500 {
1501 cbData = ExpandEnvironmentStringsW(pvBuf, pvData,
1502 pcbData ? *pcbData : 0);
1503 dwType = REG_SZ;
1504 if(pcbData && cbData > *pcbData)
1505 ret = ERROR_MORE_DATA;
1506 }
1507 else if (pcbData)
1508 CopyMemory(pvData, pvBuf, *pcbData);
1509 }
1510
1511 HeapFree(GetProcessHeap(), 0, pvBuf);
1512 }
1513
1514 if (pszSubKey && pszSubKey[0])
1515 RegCloseKey(hKey);
1516
1517 ADVAPI_ApplyRestrictions(dwFlags, dwType, cbData, &ret);
1518
1519 if (pcbData && ret != ERROR_SUCCESS && (dwFlags & RRF_ZEROONFAILURE))
1520 ZeroMemory(pvData, *pcbData);
1521
1522 if (pdwType) *pdwType = dwType;
1523 if (pcbData) *pcbData = cbData;
1524
1525 return ret;
1526 }
1527
1528
1529 /******************************************************************************
1530 * RegGetValueA [ADVAPI32.@]
1531 *
1532 * See RegGetValueW.
1533 */
1534 LONG WINAPI RegGetValueA( HKEY hKey, LPCSTR pszSubKey, LPCSTR pszValue,
1535 DWORD dwFlags, LPDWORD pdwType, PVOID pvData,
1536 LPDWORD pcbData )
1537 {
1538 DWORD dwType, cbData = pcbData ? *pcbData : 0;
1539 PVOID pvBuf = NULL;
1540 LONG ret;
1541
1542 TRACE("(%p,%s,%s,%d,%p,%p,%p=%d)\n",
1543 hKey, pszSubKey, pszValue, dwFlags, pdwType, pvData, pcbData,
1544 cbData);
1545
1546 if ((dwFlags & RRF_RT_REG_EXPAND_SZ) && !(dwFlags & RRF_NOEXPAND))
1547 return ERROR_INVALID_PARAMETER;
1548
1549 if (pszSubKey && pszSubKey[0])
1550 {
1551 ret = RegOpenKeyExA(hKey, pszSubKey, 0, KEY_QUERY_VALUE, &hKey);
1552 if (ret != ERROR_SUCCESS) return ret;
1553 }
1554
1555 ret = RegQueryValueExA(hKey, pszValue, NULL, &dwType, pvData, &cbData);
1556
1557 /* If we are going to expand we need to read in the whole the value even
1558 * if the passed buffer was too small as the expanded string might be
1559 * smaller than the unexpanded one and could fit into cbData bytes. */
1560 if ((ret == ERROR_SUCCESS || ret == ERROR_MORE_DATA) &&
1561 (dwType == REG_EXPAND_SZ && !(dwFlags & RRF_NOEXPAND)))
1562 {
1563 do {
1564 HeapFree(GetProcessHeap(), 0, pvBuf);
1565
1566 pvBuf = HeapAlloc(GetProcessHeap(), 0, cbData);
1567 if (!pvBuf)
1568 {
1569 ret = ERROR_NOT_ENOUGH_MEMORY;
1570 break;
1571 }
1572
1573 if (ret == ERROR_MORE_DATA)
1574 ret = RegQueryValueExA(hKey, pszValue, NULL,
1575 &dwType, pvBuf, &cbData);
1576 else
1577 {
1578 /* Even if cbData was large enough we have to copy the
1579 * string since ExpandEnvironmentStrings can't handle
1580 * overlapping buffers. */
1581 CopyMemory(pvBuf, pvData, cbData);
1582 }
1583
1584 /* Both the type or the value itself could have been modified in
1585 * between so we have to keep retrying until the buffer is large
1586 * enough or we no longer have to expand the value. */
1587 } while (dwType == REG_EXPAND_SZ && ret == ERROR_MORE_DATA);
1588
1589 if (ret == ERROR_SUCCESS)
1590 {
1591 if (dwType == REG_EXPAND_SZ)
1592 {
1593 cbData = ExpandEnvironmentStringsA(pvBuf, pvData,
1594 pcbData ? *pcbData : 0);
1595 dwType = REG_SZ;
1596 if(pcbData && cbData > *pcbData)
1597 ret = ERROR_MORE_DATA;
1598 }
1599 else if (pcbData)
1600 CopyMemory(pvData, pvBuf, *pcbData);
1601 }
1602
1603 HeapFree(GetProcessHeap(), 0, pvBuf);
1604 }
1605
1606 if (pszSubKey && pszSubKey[0])
1607 RegCloseKey(hKey);
1608
1609 ADVAPI_ApplyRestrictions(dwFlags, dwType, cbData, &ret);
1610
1611 if (pcbData && ret != ERROR_SUCCESS && (dwFlags & RRF_ZEROONFAILURE))
1612 ZeroMemory(pvData, *pcbData);
1613
1614 if (pdwType) *pdwType = dwType;
1615 if (pcbData) *pcbData = cbData;
1616
1617 return ret;
1618 }
1619
1620
1621 /******************************************************************************
1622 * RegEnumValueW [ADVAPI32.@]
1623 *
1624 * Enumerates the values for the specified open registry key.
1625 *
1626 * PARAMS
1627 * hkey [I] Handle to key to query
1628 * index [I] Index of value to query
1629 * value [O] Value string
1630 * val_count [I/O] Size of value buffer (in wchars)
1631 * reserved [I] Reserved
1632 * type [O] Type code
1633 * data [O] Value data
1634 * count [I/O] Size of data buffer (in bytes)
1635 *
1636 * RETURNS
1637 * Success: ERROR_SUCCESS
1638 * Failure: nonzero error code from Winerror.h
1639 */
1640
1641 LONG WINAPI RegEnumValueW( HKEY hkey, DWORD index, LPWSTR value, LPDWORD val_count,
1642 LPDWORD reserved, LPDWORD type, LPBYTE data, LPDWORD count )
1643 {
1644 NTSTATUS status;
1645 DWORD total_size;
1646 char buffer[256], *buf_ptr = buffer;
1647 KEY_VALUE_FULL_INFORMATION *info = (KEY_VALUE_FULL_INFORMATION *)buffer;
1648 static const int info_size = offsetof( KEY_VALUE_FULL_INFORMATION, Name );
1649
1650 TRACE("(%p,%d,%p,%p,%p,%p,%p,%p)\n",
1651 hkey, index, value, val_count, reserved, type, data, count );
1652
1653 /* NT only checks count, not val_count */
1654 if ((data && !count) || reserved) return ERROR_INVALID_PARAMETER;
1655 if (!(hkey = get_special_root_hkey( hkey ))) return ERROR_INVALID_HANDLE;
1656
1657 total_size = info_size + (MAX_PATH + 1) * sizeof(WCHAR);
1658 if (data) total_size += *count;
1659 total_size = min( sizeof(buffer), total_size );
1660
1661 status = NtEnumerateValueKey( hkey, index, KeyValueFullInformation,
1662 buffer, total_size, &total_size );
1663 if (status && status != STATUS_BUFFER_OVERFLOW) goto done;
1664
1665 if (value || data)
1666 {
1667 /* retry with a dynamically allocated buffer */
1668 while (status == STATUS_BUFFER_OVERFLOW)
1669 {
1670 if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
1671 if (!(buf_ptr = HeapAlloc( GetProcessHeap(), 0, total_size )))
1672 return ERROR_NOT_ENOUGH_MEMORY;
1673 info = (KEY_VALUE_FULL_INFORMATION *)buf_ptr;
1674 status = NtEnumerateValueKey( hkey, index, KeyValueFullInformation,
1675 buf_ptr, total_size, &total_size );
1676 }
1677
1678 if (status) goto done;
1679
1680 if (value)
1681 {
1682 if (info->NameLength/sizeof(WCHAR) >= *val_count)
1683 {
1684 status = STATUS_BUFFER_OVERFLOW;
1685 goto overflow;
1686 }
1687 memcpy( value, info->Name, info->NameLength );
1688 *val_count = info->NameLength / sizeof(WCHAR);
1689 value[*val_count] = 0;
1690 }
1691
1692 if (data)
1693 {
1694 if (total_size - info->DataOffset > *count)
1695 {
1696 status = STATUS_BUFFER_OVERFLOW;
1697 goto overflow;
1698 }
1699 memcpy( data, buf_ptr + info->DataOffset, total_size - info->DataOffset );
1700 if (total_size - info->DataOffset <= *count-sizeof(WCHAR) && is_string(info->Type))
1701 {
1702 /* if the type is REG_SZ and data is not 0-terminated
1703 * and there is enough space in the buffer NT appends a \0 */
1704 WCHAR *ptr = (WCHAR *)(data + total_size - info->DataOffset);
1705 if (ptr > (WCHAR *)data && ptr[-1]) *ptr = 0;
1706 }
1707 }
1708 }
1709 else status = STATUS_SUCCESS;
1710
1711 overflow:
1712 if (type) *type = info->Type;
1713 if (count) *count = info->DataLength;
1714
1715 done:
1716 if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
1717 return RtlNtStatusToDosError(status);
1718 }
1719
1720
1721 /******************************************************************************
1722 * RegEnumValueA [ADVAPI32.@]
1723 *
1724 * See RegEnumValueW.
1725 */
1726 LONG WINAPI RegEnumValueA( HKEY hkey, DWORD index, LPSTR value, LPDWORD val_count,
1727 LPDWORD reserved, LPDWORD type, LPBYTE data, LPDWORD count )
1728 {
1729 NTSTATUS status;
1730 DWORD total_size;
1731 char buffer[256], *buf_ptr = buffer;
1732 KEY_VALUE_FULL_INFORMATION *info = (KEY_VALUE_FULL_INFORMATION *)buffer;
1733 static const int info_size = offsetof( KEY_VALUE_FULL_INFORMATION, Name );
1734
1735 TRACE("(%p,%d,%p,%p,%p,%p,%p,%p)\n",
1736 hkey, index, value, val_count, reserved, type, data, count );
1737
1738 /* NT only checks count, not val_count */
1739 if ((data && !count) || reserved) return ERROR_INVALID_PARAMETER;
1740 if (!(hkey = get_special_root_hkey( hkey ))) return ERROR_INVALID_HANDLE;
1741
1742 total_size = info_size + (MAX_PATH + 1) * sizeof(WCHAR);
1743 if (data) total_size += *count;
1744 total_size = min( sizeof(buffer), total_size );
1745
1746 status = NtEnumerateValueKey( hkey, index, KeyValueFullInformation,
1747 buffer, total_size, &total_size );
1748 if (status && status != STATUS_BUFFER_OVERFLOW) goto done;
1749
1750 /* we need to fetch the contents for a string type even if not requested,
1751 * because we need to compute the length of the ASCII string. */
1752 if (value || data || is_string(info->Type))
1753 {
1754 /* retry with a dynamically allocated buffer */
1755 while (status == STATUS_BUFFER_OVERFLOW)
1756 {
1757 if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
1758 if (!(buf_ptr = HeapAlloc( GetProcessHeap(), 0, total_size )))
1759 return ERROR_NOT_ENOUGH_MEMORY;
1760 info = (KEY_VALUE_FULL_INFORMATION *)buf_ptr;
1761 status = NtEnumerateValueKey( hkey, index, KeyValueFullInformation,
1762 buf_ptr, total_size, &total_size );
1763 }
1764
1765 if (status) goto done;
1766
1767 if (is_string(info->Type))
1768 {
1769 DWORD len;
1770 RtlUnicodeToMultiByteSize( &len, (WCHAR *)(buf_ptr + info->DataOffset),
1771 total_size - info->DataOffset );
1772 if (data && len)
1773 {
1774 if (len > *count) status = STATUS_BUFFER_OVERFLOW;
1775 else
1776 {
1777 RtlUnicodeToMultiByteN( (char*)data, len, NULL, (WCHAR *)(buf_ptr + info->DataOffset),
1778 total_size - info->DataOffset );
1779 /* if the type is REG_SZ and data is not 0-terminated
1780 * and there is enough space in the buffer NT appends a \0 */
1781 if (len < *count && data[len-1]) data[len] = 0;
1782 }
1783 }
1784 info->DataLength = len;
1785 }
1786 else if (data)
1787 {
1788 if (total_size - info->DataOffset > *count) status = STATUS_BUFFER_OVERFLOW;
1789 else memcpy( data, buf_ptr + info->DataOffset, total_size - info->DataOffset );
1790 }
1791
1792 if (value && !status)
1793 {
1794 DWORD len;
1795
1796 RtlUnicodeToMultiByteSize( &len, info->Name, info->NameLength );
1797 if (len >= *val_count)
1798 {
1799 status = STATUS_BUFFER_OVERFLOW;
1800 if (*val_count)
1801 {
1802 len = *val_count - 1;
1803 RtlUnicodeToMultiByteN( value, len, NULL, info->Name, info->NameLength );
1804 value[len] = 0;
1805 }
1806 }
1807 else
1808 {
1809 RtlUnicodeToMultiByteN( value, len, NULL, info->Name, info->NameLength );
1810 value[len] = 0;
1811 *val_count = len;
1812 }
1813 }
1814 }
1815 else status = STATUS_SUCCESS;
1816
1817 if (type) *type = info->Type;
1818 if (count) *count = info->DataLength;
1819
1820 done:
1821 if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
1822 return RtlNtStatusToDosError(status);
1823 }
1824
1825
1826
1827 /******************************************************************************
1828 * RegDeleteValueW [ADVAPI32.@]
1829 *
1830 * See RegDeleteValueA.
1831 */
1832 LONG WINAPI RegDeleteValueW( HKEY hkey, LPCWSTR name )
1833 {
1834 UNICODE_STRING nameW;
1835
1836 if (!(hkey = get_special_root_hkey( hkey ))) return ERROR_INVALID_HANDLE;
1837
1838 RtlInitUnicodeString( &nameW, name );
1839 return RtlNtStatusToDosError( NtDeleteValueKey( hkey, &nameW ) );
1840 }
1841
1842
1843 /******************************************************************************
1844 * RegDeleteValueA [ADVAPI32.@]
1845 *
1846 * Delete a value from the registry.
1847 *
1848 * PARAMS
1849 * hkey [I] Registry handle of the key holding the value
1850 * name [I] Name of the value under hkey to delete
1851 *
1852 * RETURNS
1853 * Success: ERROR_SUCCESS
1854 * Failure: nonzero error code from Winerror.h
1855 */
1856 LONG WINAPI RegDeleteValueA( HKEY hkey, LPCSTR name )
1857 {
1858 STRING nameA;
1859 NTSTATUS status;
1860
1861 if (!(hkey = get_special_root_hkey( hkey ))) return ERROR_INVALID_HANDLE;
1862
1863 RtlInitAnsiString( &nameA, name );
1864 if (!(status = RtlAnsiStringToUnicodeString( &NtCurrentTeb()->StaticUnicodeString,
1865 &nameA, FALSE )))
1866 status = NtDeleteValueKey( hkey, &NtCurrentTeb()->StaticUnicodeString );
1867 return RtlNtStatusToDosError( status );
1868 }
1869
1870
1871 /******************************************************************************
1872 * RegLoadKeyW [ADVAPI32.@]
1873 *
1874 * Create a subkey under HKEY_USERS or HKEY_LOCAL_MACHINE and store
1875 * registration information from a specified file into that subkey.
1876 *
1877 * PARAMS
1878 * hkey [I] Handle of open key
1879 * subkey [I] Address of name of subkey
1880 * filename [I] Address of filename for registry information
1881 *
1882 * RETURNS
1883 * Success: ERROR_SUCCESS
1884 * Failure: nonzero error code from Winerror.h
1885 */
1886 LONG WINAPI RegLoadKeyW( HKEY hkey, LPCWSTR subkey, LPCWSTR filename )
1887 {
1888 OBJECT_ATTRIBUTES destkey, file;
1889 UNICODE_STRING subkeyW, filenameW;
1890 NTSTATUS status;
1891
1892 if (!(hkey = get_special_root_hkey(hkey))) return ERROR_INVALID_HANDLE;
1893
1894 destkey.Length = sizeof(destkey);
1895 destkey.RootDirectory = hkey; /* root key: HKLM or HKU */
1896 destkey.ObjectName = &subkeyW; /* name of the key */
1897 destkey.Attributes = 0;
1898 destkey.SecurityDescriptor = NULL;
1899 destkey.SecurityQualityOfService = NULL;
1900 RtlInitUnicodeString(&subkeyW, subkey);
1901
1902 file.Length = sizeof(file);
1903 file.RootDirectory = NULL;
1904 file.ObjectName = &filenameW; /* file containing the hive */
1905 file.Attributes = OBJ_CASE_INSENSITIVE;
1906 file.SecurityDescriptor = NULL;
1907 file.SecurityQualityOfService = NULL;
1908 RtlDosPathNameToNtPathName_U(filename, &filenameW, NULL, NULL);
1909
1910 status = NtLoadKey(&destkey, &file);
1911 RtlFreeUnicodeString(&filenameW);
1912 return RtlNtStatusToDosError( status );
1913 }
1914
1915
1916 /******************************************************************************
1917 * RegLoadKeyA [ADVAPI32.@]
1918 *
1919 * See RegLoadKeyW.
1920 */
1921 LONG WINAPI RegLoadKeyA( HKEY hkey, LPCSTR subkey, LPCSTR filename )
1922 {
1923 UNICODE_STRING subkeyW, filenameW;
1924 STRING subkeyA, filenameA;
1925 NTSTATUS status;
1926 LONG ret;
1927
1928 RtlInitAnsiString(&subkeyA, subkey);
1929 RtlInitAnsiString(&filenameA, filename);
1930
1931 RtlInitUnicodeString(&subkeyW, NULL);
1932 RtlInitUnicodeString(&filenameW, NULL);
1933 if (!(status = RtlAnsiStringToUnicodeString(&subkeyW, &subkeyA, TRUE)) &&
1934 !(status = RtlAnsiStringToUnicodeString(&filenameW, &filenameA, TRUE)))
1935 {
1936 ret = RegLoadKeyW(hkey, subkeyW.Buffer, filenameW.Buffer);
1937 }
1938 else ret = RtlNtStatusToDosError(status);
1939 RtlFreeUnicodeString(&subkeyW);
1940 RtlFreeUnicodeString(&filenameW);
1941 return ret;
1942 }
1943
1944
1945 /******************************************************************************
1946 * RegSaveKeyW [ADVAPI32.@]
1947 *
1948 * Save a key and all of its subkeys and values to a new file in the standard format.
1949 *
1950 * PARAMS
1951 * hkey [I] Handle of key where save begins
1952 * lpFile [I] Address of filename to save to
1953 * sa [I] Address of security structure
1954 *
1955 * RETURNS
1956 * Success: ERROR_SUCCESS
1957 * Failure: nonzero error code from Winerror.h
1958 */
1959 LONG WINAPI RegSaveKeyW( HKEY hkey, LPCWSTR file, LPSECURITY_ATTRIBUTES sa )
1960 {
1961 static const WCHAR format[] =
1962 {'r','e','g','%','0','4','x','.','t','m','p',0};
1963 WCHAR buffer[MAX_PATH];
1964 int count = 0;
1965 LPWSTR nameW;
1966 DWORD ret, err;
1967 HANDLE handle;
1968
1969 TRACE( "(%p,%s,%p)\n", hkey, debugstr_w(file), sa );
1970
1971 if (!file || !*file) return ERROR_INVALID_PARAMETER;
1972 if (!(hkey = get_special_root_hkey( hkey ))) return ERROR_INVALID_HANDLE;
1973
1974 err = GetLastError();
1975 GetFullPathNameW( file, sizeof(buffer)/sizeof(WCHAR), buffer, &nameW );
1976
1977 for (;;)
1978 {
1979 snprintfW( nameW, 16, format, count++ );
1980 handle = CreateFileW( buffer, GENERIC_WRITE, 0, NULL,
1981 CREATE_NEW, FILE_ATTRIBUTE_NORMAL, 0 );
1982 if (handle != INVALID_HANDLE_VALUE) break;
1983 if ((ret = GetLastError()) != ERROR_FILE_EXISTS) goto done;
1984
1985 /* Something gone haywire ? Please report if this happens abnormally */
1986 if (count >= 100)
1987 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);
1988 }
1989
1990 ret = RtlNtStatusToDosError(NtSaveKey(hkey, handle));
1991
1992 CloseHandle( handle );
1993 if (!ret)
1994 {
1995 if (!MoveFileExW( buffer, file, MOVEFILE_REPLACE_EXISTING ))
1996 {
1997 ERR( "Failed to move %s to %s\n", debugstr_w(buffer),
1998 debugstr_w(file) );
1999 ret = GetLastError();
2000 }
2001 }
2002 if (ret) DeleteFileW( buffer );
2003
2004 done:
2005 SetLastError( err ); /* restore last error code */
2006 return ret;
2007 }
2008
2009
2010 /******************************************************************************
2011 * RegSaveKeyA [ADVAPI32.@]
2012 *
2013 * See RegSaveKeyW.
2014 */
2015 LONG WINAPI RegSaveKeyA( HKEY hkey, LPCSTR file, LPSECURITY_ATTRIBUTES sa )
2016 {
2017 UNICODE_STRING *fileW = &NtCurrentTeb()->StaticUnicodeString;
2018 NTSTATUS status;
2019 STRING fileA;
2020
2021 RtlInitAnsiString(&fileA, file);
2022 if ((status = RtlAnsiStringToUnicodeString(fileW, &fileA, FALSE)))
2023 return RtlNtStatusToDosError( status );
2024 return RegSaveKeyW(hkey, fileW->Buffer, sa);
2025 }
2026
2027
2028 /******************************************************************************
2029 * RegRestoreKeyW [ADVAPI32.@]
2030 *
2031 * Read the registry information from a file and copy it over a key.
2032 *
2033 * PARAMS
2034 * hkey [I] Handle of key where restore begins
2035 * lpFile [I] Address of filename containing saved tree
2036 * dwFlags [I] Optional flags
2037 *
2038 * RETURNS
2039 * Success: ERROR_SUCCESS
2040 * Failure: nonzero error code from Winerror.h
2041 */
2042 LONG WINAPI RegRestoreKeyW( HKEY hkey, LPCWSTR lpFile, DWORD dwFlags )
2043 {
2044 TRACE("(%p,%s,%d)\n",hkey,debugstr_w(lpFile),dwFlags);
2045
2046 /* It seems to do this check before the hkey check */
2047 if (!lpFile || !*lpFile)
2048 return ERROR_INVALID_PARAMETER;
2049
2050 FIXME("(%p,%s,%d): stub\n",hkey,debugstr_w(lpFile),dwFlags);
2051
2052 /* Check for file existence */
2053
2054 return ERROR_SUCCESS;
2055 }
2056
2057
2058 /******************************************************************************
2059 * RegRestoreKeyA [ADVAPI32.@]
2060 *
2061 * See RegRestoreKeyW.
2062 */
2063 LONG WINAPI RegRestoreKeyA( HKEY hkey, LPCSTR lpFile, DWORD dwFlags )
2064 {
2065 UNICODE_STRING lpFileW;
2066 LONG ret;
2067
2068 RtlCreateUnicodeStringFromAsciiz( &lpFileW, lpFile );
2069 ret = RegRestoreKeyW( hkey, lpFileW.Buffer, dwFlags );
2070 RtlFreeUnicodeString( &lpFileW );
2071 return ret;
2072 }
2073
2074
2075 /******************************************************************************
2076 * RegUnLoadKeyW [ADVAPI32.@]
2077 *
2078 * Unload a registry key and its subkeys from the registry.
2079 *
2080 * PARAMS
2081 * hkey [I] Handle of open key
2082 * lpSubKey [I] Address of name of subkey to unload
2083 *
2084 * RETURNS
2085 * Success: ERROR_SUCCESS
2086 * Failure: nonzero error code from Winerror.h
2087 */
2088 LONG WINAPI RegUnLoadKeyW( HKEY hkey, LPCWSTR lpSubKey )
2089 {
2090 DWORD ret;
2091 HKEY shkey;
2092
2093 TRACE("(%p,%s)\n",hkey, debugstr_w(lpSubKey));
2094
2095 ret = RegOpenKeyW(hkey,lpSubKey,&shkey);
2096 if( ret )
2097 return ERROR_INVALID_PARAMETER;
2098
2099 ret = RtlNtStatusToDosError(NtUnloadKey(shkey));
2100
2101 RegCloseKey(shkey);
2102
2103 return ret;
2104 }
2105
2106
2107 /******************************************************************************
2108 * RegUnLoadKeyA [ADVAPI32.@]
2109 *
2110 * See RegUnLoadKeyW.
2111 */
2112 LONG WINAPI RegUnLoadKeyA( HKEY hkey, LPCSTR lpSubKey )
2113 {
2114 UNICODE_STRING lpSubKeyW;
2115 LONG ret;
2116
2117 RtlCreateUnicodeStringFromAsciiz( &lpSubKeyW, lpSubKey );
2118 ret = RegUnLoadKeyW( hkey, lpSubKeyW.Buffer );
2119 RtlFreeUnicodeString( &lpSubKeyW );
2120 return ret;
2121 }
2122
2123
2124 /******************************************************************************
2125 * RegReplaceKeyW [ADVAPI32.@]
2126 *
2127 * Replace the file backing a registry key and all its subkeys with another file.
2128 *
2129 * PARAMS
2130 * hkey [I] Handle of open key
2131 * lpSubKey [I] Address of name of subkey
2132 * lpNewFile [I] Address of filename for file with new data
2133 * lpOldFile [I] Address of filename for backup file
2134 *
2135 * RETURNS
2136 * Success: ERROR_SUCCESS
2137 * Failure: nonzero error code from Winerror.h
2138 */
2139 LONG WINAPI RegReplaceKeyW( HKEY hkey, LPCWSTR lpSubKey, LPCWSTR lpNewFile,
2140 LPCWSTR lpOldFile )
2141 {
2142 FIXME("(%p,%s,%s,%s): stub\n", hkey, debugstr_w(lpSubKey),
2143 debugstr_w(lpNewFile),debugstr_w(lpOldFile));
2144 return ERROR_SUCCESS;
2145 }
2146
2147
2148 /******************************************************************************
2149 * RegReplaceKeyA [ADVAPI32.@]
2150 *
2151 * See RegReplaceKeyW.
2152 */
2153 LONG WINAPI RegReplaceKeyA( HKEY hkey, LPCSTR lpSubKey, LPCSTR lpNewFile,
2154 LPCSTR lpOldFile )
2155 {
2156 UNICODE_STRING lpSubKeyW;
2157 UNICODE_STRING lpNewFileW;
2158 UNICODE_STRING lpOldFileW;
2159 LONG ret;
2160
2161 RtlCreateUnicodeStringFromAsciiz( &lpSubKeyW, lpSubKey );
2162 RtlCreateUnicodeStringFromAsciiz( &lpOldFileW, lpOldFile );
2163 RtlCreateUnicodeStringFromAsciiz( &lpNewFileW, lpNewFile );
2164 ret = RegReplaceKeyW( hkey, lpSubKeyW.Buffer, lpNewFileW.Buffer, lpOldFileW.Buffer );
2165 RtlFreeUnicodeString( &lpOldFileW );
2166 RtlFreeUnicodeString( &lpNewFileW );
2167 RtlFreeUnicodeString( &lpSubKeyW );
2168 return ret;
2169 }
2170
2171
2172 /******************************************************************************
2173 * RegSetKeySecurity [ADVAPI32.@]
2174 *
2175 * Set the security of an open registry key.
2176 *
2177 * PARAMS
2178 * hkey [I] Open handle of key to set
2179 * SecurityInfo [I] Descriptor contents
2180 * pSecurityDesc [I] Address of descriptor for key
2181 *
2182 * RETURNS
2183 * Success: ERROR_SUCCESS
2184 * Failure: nonzero error code from Winerror.h
2185 */
2186 LONG WINAPI RegSetKeySecurity( HKEY hkey, SECURITY_INFORMATION SecurityInfo,
2187 PSECURITY_DESCRIPTOR pSecurityDesc )
2188 {
2189 TRACE("(%p,%d,%p)\n",hkey,SecurityInfo,pSecurityDesc);
2190
2191 /* It seems to perform this check before the hkey check */
2192 if ((SecurityInfo & OWNER_SECURITY_INFORMATION) ||
2193 (SecurityInfo & GROUP_SECURITY_INFORMATION) ||
2194 (SecurityInfo & DACL_SECURITY_INFORMATION) ||
2195 (SecurityInfo & SACL_SECURITY_INFORMATION)) {
2196 /* Param OK */
2197 } else
2198 return ERROR_INVALID_PARAMETER;
2199
2200 if (!pSecurityDesc)
2201 return ERROR_INVALID_PARAMETER;
2202
2203 FIXME(":(%p,%d,%p): stub\n",hkey,SecurityInfo,pSecurityDesc);
2204
2205 return ERROR_SUCCESS;
2206 }
2207
2208
2209 /******************************************************************************
2210 * RegGetKeySecurity [ADVAPI32.@]
2211 *
2212 * Get a copy of the security descriptor for a given registry key.
2213 *
2214 * PARAMS
2215 * hkey [I] Open handle of key to set
2216 * SecurityInformation [I] Descriptor contents
2217 * pSecurityDescriptor [O] Address of descriptor for key
2218 * lpcbSecurityDescriptor [I/O] Address of size of buffer and description
2219 *
2220 * RETURNS
2221 * Success: ERROR_SUCCESS
2222 * Failure: Error code
2223 */
2224 LONG WINAPI RegGetKeySecurity( HKEY hkey, SECURITY_INFORMATION SecurityInformation,
2225 PSECURITY_DESCRIPTOR pSecurityDescriptor,
2226 LPDWORD lpcbSecurityDescriptor )
2227 {
2228 TRACE("(%p,%d,%p,%d)\n",hkey,SecurityInformation,pSecurityDescriptor,
2229 lpcbSecurityDescriptor?*lpcbSecurityDescriptor:0);
2230
2231 /* FIXME: Check for valid SecurityInformation values */
2232
2233 if (*lpcbSecurityDescriptor < sizeof(SECURITY_DESCRIPTOR))
2234 return ERROR_INSUFFICIENT_BUFFER;
2235
2236 FIXME("(%p,%d,%p,%d): stub\n",hkey,SecurityInformation,
2237 pSecurityDescriptor,lpcbSecurityDescriptor?*lpcbSecurityDescriptor:0);
2238
2239 /* Do not leave security descriptor filled with garbage */
2240 RtlCreateSecurityDescriptor(pSecurityDescriptor, SECURITY_DESCRIPTOR_REVISION);
2241
2242 return ERROR_SUCCESS;
2243 }
2244
2245
2246 /******************************************************************************
2247 * RegFlushKey [ADVAPI32.@]
2248 *
2249 * Immediately write a registry key to registry.
2250 *
2251 * PARAMS
2252 * hkey [I] Handle of key to write
2253 *
2254 * RETURNS
2255 * Success: ERROR_SUCCESS
2256 * Failure: Error code
2257 */
2258 LONG WINAPI RegFlushKey( HKEY hkey )
2259 {
2260 hkey = get_special_root_hkey( hkey );
2261 if (!hkey) return ERROR_INVALID_HANDLE;
2262
2263 return RtlNtStatusToDosError( NtFlushKey( hkey ) );
2264 }
2265
2266
2267 /******************************************************************************
2268 * RegConnectRegistryW [ADVAPI32.@]
2269 *
2270 * Establishe a connection to a predefined registry key on another computer.
2271 *
2272 * PARAMS
2273 * lpMachineName [I] Address of name of remote computer
2274 * hHey [I] Predefined registry handle
2275 * phkResult [I] Address of buffer for remote registry handle
2276 *
2277 * RETURNS
2278 * Success: ERROR_SUCCESS
2279 * Failure: nonzero error code from Winerror.h
2280 */
2281 LONG WINAPI RegConnectRegistryW( LPCWSTR lpMachineName, HKEY hKey,
2282 PHKEY phkResult )
2283 {
2284 LONG ret;
2285
2286 TRACE("(%s,%p,%p): stub\n",debugstr_w(lpMachineName),hKey,phkResult);
2287
2288 if (!lpMachineName || !*lpMachineName) {
2289 /* Use the local machine name */
2290 ret = RegOpenKeyW( hKey, NULL, phkResult );
2291 }
2292 else {
2293 WCHAR compName[MAX_COMPUTERNAME_LENGTH + 1];
2294 DWORD len = sizeof(compName) / sizeof(WCHAR);
2295
2296 /* MSDN says lpMachineName must start with \\ : not so */
2297 if( lpMachineName[0] == '\\' && lpMachineName[1] == '\\')
2298 lpMachineName += 2;
2299 if (GetComputerNameW(compName, &len))
2300 {
2301 if (!strcmpiW(lpMachineName, compName))
2302 ret = RegOpenKeyW(hKey, NULL, phkResult);
2303 else
2304 {
2305 FIXME("Connect to %s is not supported.\n",debugstr_w(lpMachineName));
2306 ret = ERROR_BAD_NETPATH;
2307 }
2308 }
2309 else
2310 ret = GetLastError();
2311 }
2312 return ret;
2313 }
2314
2315
2316 /******************************************************************************
2317 * RegConnectRegistryA [ADVAPI32.@]
2318 *
2319 * See RegConnectRegistryW.
2320 */
2321 LONG WINAPI RegConnectRegistryA( LPCSTR machine, HKEY hkey, PHKEY reskey )
2322 {
2323 UNICODE_STRING machineW;
2324 LONG ret;
2325
2326 RtlCreateUnicodeStringFromAsciiz( &machineW, machine );
2327 ret = RegConnectRegistryW( machineW.Buffer, hkey, reskey );
2328 RtlFreeUnicodeString( &machineW );
2329 return ret;
2330 }
2331
2332
2333 /******************************************************************************
2334 * RegNotifyChangeKeyValue [ADVAPI32.@]
2335 *
2336 * Notify the caller about changes to the attributes or contents of a registry key.
2337 *
2338 * PARAMS
2339 * hkey [I] Handle of key to watch
2340 * fWatchSubTree [I] Flag for subkey notification
2341 * fdwNotifyFilter [I] Changes to be reported
2342 * hEvent [I] Handle of signaled event
2343 * fAsync [I] Flag for asynchronous reporting
2344 *
2345 * RETURNS
2346 * Success: ERROR_SUCCESS
2347 * Failure: nonzero error code from Winerror.h
2348 */
2349 LONG WINAPI RegNotifyChangeKeyValue( HKEY hkey, BOOL fWatchSubTree,
2350 DWORD fdwNotifyFilter, HANDLE hEvent,
2351 BOOL fAsync )
2352 {
2353 NTSTATUS status;
2354 IO_STATUS_BLOCK iosb;
2355
2356 hkey = get_special_root_hkey( hkey );
2357 if (!hkey) return ERROR_INVALID_HANDLE;
2358
2359 TRACE("(%p,%i,%d,%p,%i)\n", hkey, fWatchSubTree, fdwNotifyFilter,
2360 hEvent, fAsync);
2361
2362 status = NtNotifyChangeKey( hkey, hEvent, NULL, NULL, &iosb,
2363 fdwNotifyFilter, fAsync, NULL, 0,
2364 fWatchSubTree);
2365
2366 if (status && status != STATUS_TIMEOUT)
2367 return RtlNtStatusToDosError( status );
2368
2369 return ERROR_SUCCESS;
2370 }
2371
2372 /******************************************************************************
2373 * RegOpenUserClassesRoot [ADVAPI32.@]
2374 *
2375 * Open the HKEY_CLASSES_ROOT key for a user.
2376 *
2377 * PARAMS
2378 * hToken [I] Handle of token representing the user
2379 * dwOptions [I] Reserved, nust be 0
2380 * samDesired [I] Desired access rights
2381 * phkResult [O] Destination for the resulting key handle
2382 *
2383 * RETURNS
2384 * Success: ERROR_SUCCESS
2385 * Failure: nonzero error code from Winerror.h
2386 *
2387 * NOTES
2388 * On Windows 2000 and upwards the HKEY_CLASSES_ROOT key is a view of the
2389 * "HKEY_LOCAL_MACHINE\Software\Classes" and the
2390 * "HKEY_CURRENT_USER\Software\Classes" keys merged together.
2391 */
2392 LONG WINAPI RegOpenUserClassesRoot(
2393 HANDLE hToken,
2394 DWORD dwOptions,
2395 REGSAM samDesired,
2396 PHKEY phkResult
2397 )
2398 {
2399 FIXME("(%p, 0x%x, 0x%x, %p) semi-stub\n", hToken, dwOptions, samDesired, phkResult);
2400
2401 *phkResult = HKEY_CLASSES_ROOT;
2402 return ERROR_SUCCESS;
2403 }
2404
2405 /******************************************************************************
2406 * load_string [Internal]
2407 *
2408 * This is basically a copy of user32/resource.c's LoadStringW. Necessary to
2409 * avoid importing user32, which is higher level than advapi32. Helper for
2410 * RegLoadMUIString.
2411 */
2412 static int load_string(HINSTANCE hModule, UINT resId, LPWSTR pwszBuffer, INT cMaxChars)
2413 {
2414 HGLOBAL hMemory;
2415 HRSRC hResource;
2416 WCHAR *pString;
2417 int idxString;
2418
2419 /* Negative values have to be inverted. */
2420 if (HIWORD(resId) == 0xffff)
2421 resId = (UINT)(-((INT)resId));
2422
2423 /* Load the resource into memory and get a pointer to it. */
2424 hResource = FindResourceW(hModule, MAKEINTRESOURCEW(LOWORD(resId >> 4) + 1), (LPWSTR)RT_STRING);
2425 if (!hResource) return 0;
2426 hMemory = LoadResource(hModule, hResource);
2427 if (!hMemory) return 0;
2428 pString = LockResource(hMemory);
2429
2430 /* Strings are length-prefixed. Lowest nibble of resId is an index. */
2431 idxString = resId & 0xf;
2432 while (idxString--) pString += *pString + 1;
2433
2434 /* If no buffer is given, return length of the string. */
2435 if (!pwszBuffer) return *pString;
2436
2437 /* Else copy over the string, respecting the buffer size. */
2438 cMaxChars = (*pString < cMaxChars) ? *pString : (cMaxChars - 1);
2439 if (cMaxChars >= 0) {
2440 memcpy(pwszBuffer, pString+1, cMaxChars * sizeof(WCHAR));
2441 pwszBuffer[cMaxChars] = '\0';
2442 }
2443
2444 return cMaxChars;
2445 }
2446
2447 /******************************************************************************
2448 * RegLoadMUIStringW [ADVAPI32.@]
2449 *
2450 * Load the localized version of a string resource from some PE, respective
2451 * id and path of which are given in the registry value in the format
2452 * @[path]\dllname,-resourceId
2453 *
2454 * PARAMS
2455 * hKey [I] Key, of which to load the string value from.
2456 * pszValue [I] The value to be loaded (Has to be of REG_EXPAND_SZ or REG_SZ type).
2457 * pszBuffer [O] Buffer to store the localized string in.
2458 * cbBuffer [I] Size of the destination buffer in bytes.
2459 * pcbData [O] Number of bytes written to pszBuffer (optional, may be NULL).
2460 * dwFlags [I] None supported yet.
2461 * pszBaseDir [I] Not supported yet.
2462 *
2463 * RETURNS
2464 * Success: ERROR_SUCCESS,
2465 * Failure: nonzero error code from winerror.h
2466 *
2467 * NOTES
2468 * This is an API of Windows Vista, which wasn't available at the time this code
2469 * was written. We have to check for the correct behaviour once it's available.
2470 */
2471 LONG WINAPI RegLoadMUIStringW(HKEY hKey, LPCWSTR pwszValue, LPWSTR pwszBuffer, DWORD cbBuffer,
2472 LPDWORD pcbData, DWORD dwFlags, LPCWSTR pwszBaseDir)
2473 {
2474 DWORD dwValueType, cbData;
2475 LPWSTR pwszTempBuffer = NULL, pwszExpandedBuffer = NULL;
2476 LONG result;
2477
2478 TRACE("(hKey = %p, pwszValue = %s, pwszBuffer = %p, cbBuffer = %d, pcbData = %p, "
2479 "dwFlags = %d, pwszBaseDir = %s) stub\n", hKey, debugstr_w(pwszValue), pwszBuffer,
2480 cbBuffer, pcbData, dwFlags, debugstr_w(pwszBaseDir));
2481
2482 /* Parameter sanity checks. */
2483 if (!hKey || !pwszBuffer)
2484 return ERROR_INVALID_PARAMETER;
2485
2486 if (pwszBaseDir && *pwszBaseDir) {
2487 FIXME("BaseDir parameter not yet supported!\n");
2488 return ERROR_INVALID_PARAMETER;
2489 }
2490
2491 /* Check for value existence and correctness of it's type, allocate a buffer and load it. */
2492 result = RegQueryValueExW(hKey, pwszValue, NULL, &dwValueType, NULL, &cbData);
2493 if (result != ERROR_SUCCESS) goto cleanup;
2494 if (!(dwValueType == REG_SZ || dwValueType == REG_EXPAND_SZ) || !cbData) {
2495 result = ERROR_FILE_NOT_FOUND;
2496 goto cleanup;
2497 }
2498 pwszTempBuffer = HeapAlloc(GetProcessHeap(), 0, cbData);
2499 if (!pwszTempBuffer) {
2500 result = ERROR_NOT_ENOUGH_MEMORY;
2501 goto cleanup;
2502 }
2503 result = RegQueryValueExW(hKey, pwszValue, NULL, &dwValueType, (LPBYTE)pwszTempBuffer, &cbData);
2504 if (result != ERROR_SUCCESS) goto cleanup;
2505
2506 /* Expand environment variables, if appropriate, or copy the original string over. */
2507 if (dwValueType == REG_EXPAND_SZ) {
2508 cbData = ExpandEnvironmentStringsW(pwszTempBuffer, NULL, 0) * sizeof(WCHAR);
2509 if (!cbData) goto cleanup;
2510 pwszExpandedBuffer = HeapAlloc(GetProcessHeap(), 0, cbData);
2511 if (!pwszExpandedBuffer) {
2512 result = ERROR_NOT_ENOUGH_MEMORY;
2513 goto cleanup;
2514 }
2515 ExpandEnvironmentStringsW(pwszTempBuffer, pwszExpandedBuffer, cbData);
2516 } else {
2517 pwszExpandedBuffer = HeapAlloc(GetProcessHeap(), 0, cbData);
2518 memcpy(pwszExpandedBuffer, pwszTempBuffer, cbData);
2519 }
2520
2521 /* If the value references a resource based string, parse the value and load the string.
2522 * Else just copy over the original value. */
2523 result = ERROR_SUCCESS;
2524 if (*pwszExpandedBuffer != '@') { /* '@' is the prefix for resource based string entries. */
2525 lstrcpynW(pwszBuffer, pwszExpandedBuffer, cbBuffer / sizeof(WCHAR));
2526 } else {
2527 WCHAR *pComma = strrchrW(pwszExpandedBuffer, ',');
2528 UINT uiStringId;
2529 HMODULE hModule;
2530
2531 /* Format of the expanded value is 'path_to_dll,-resId' */
2532 if (!pComma || pComma[1] != '-') {
2533 result = ERROR_BADKEY;
2534 goto cleanup;
2535 }
2536
2537 uiStringId = atoiW(pComma+2);
2538 *pComma = '\0';
2539
2540 hModule = LoadLibraryW(pwszExpandedBuffer + 1);
2541 if (!hModule || !load_string(hModule, uiStringId, pwszBuffer, cbBuffer/sizeof(WCHAR)))
2542 result = ERROR_BADKEY;
2543 FreeLibrary(hModule);
2544 }
2545
2546 cleanup:
2547 HeapFree(GetProcessHeap(), 0, pwszTempBuffer);
2548 HeapFree(GetProcessHeap(), 0, pwszExpandedBuffer);
2549 return result;
2550 }
2551
2552 /******************************************************************************
2553 * RegLoadMUIStringA [ADVAPI32.@]
2554 *
2555 * See RegLoadMUIStringW
2556 */
2557 LONG WINAPI RegLoadMUIStringA(HKEY hKey, LPCSTR pszValue, LPSTR pszBuffer, DWORD cbBuffer,
2558 LPDWORD pcbData, DWORD dwFlags, LPCSTR pszBaseDir)
2559 {
2560 UNICODE_STRING valueW, baseDirW;
2561 WCHAR *pwszBuffer;
2562 DWORD cbData = cbBuffer * sizeof(WCHAR);
2563 LONG result;
2564
2565 valueW.Buffer = baseDirW.Buffer = pwszBuffer = NULL;
2566 if (!RtlCreateUnicodeStringFromAsciiz(&valueW, pszValue) ||
2567 !RtlCreateUnicodeStringFromAsciiz(&baseDirW, pszBaseDir) ||
2568 !(pwszBuffer = HeapAlloc(GetProcessHeap(), 0, cbData)))
2569 {
2570 result = ERROR_NOT_ENOUGH_MEMORY;
2571 goto cleanup;
2572 }
2573
2574 result = RegLoadMUIStringW(hKey, valueW.Buffer, pwszBuffer, cbData, NULL, dwFlags,
2575 baseDirW.Buffer);
2576
2577 if (result == ERROR_SUCCESS) {
2578 cbData = WideCharToMultiByte(CP_ACP, 0, pwszBuffer, -1, pszBuffer, cbBuffer, NULL, NULL);
2579 if (pcbData)
2580 *pcbData = cbData;
2581 }
2582
2583 cleanup:
2584 HeapFree(GetProcessHeap(), 0, pwszBuffer);
2585 RtlFreeUnicodeString(&baseDirW);
2586 RtlFreeUnicodeString(&valueW);
2587
2588 return result;
2589 }
2590
2591 /******************************************************************************
2592 * RegDisablePredefinedCache [ADVAPI32.@]
2593 *
2594 * Disables the caching of the HKEY_CLASSES_ROOT key for the process.
2595 *
2596 * PARAMS
2597 * None.
2598 *
2599 * RETURNS
2600 * Success: ERROR_SUCCESS
2601 * Failure: nonzero error code from Winerror.h
2602 *
2603 * NOTES
2604 * This is useful for services that use impersonation.
2605 */
2606 LONG WINAPI RegDisablePredefinedCache(void)
2607 {
2608 HKEY hkey_current_user;
2609 int idx = (UINT_PTR)HKEY_CURRENT_USER - (UINT_PTR)HKEY_SPECIAL_ROOT_FIRST;
2610
2611 /* prevent caching of future requests */
2612 hkcu_cache_disabled = TRUE;
2613
2614 hkey_current_user = InterlockedExchangePointer( (void **)&special_root_keys[idx], NULL );
2615
2616 if (hkey_current_user)
2617 NtClose( hkey_current_user );
2618
2619 return ERROR_SUCCESS;
2620 }
Windows API implementation