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advapi32: Fix registry API prototypes to match the PSDK.
[wine/wine64.git] / dlls / advapi32 / registry.c
blob81ed4845d34e87f8ceb3143f7594296a9828157a
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 #define DECL_STR(key) { sizeof(name_##key)-sizeof(WCHAR), sizeof(name_##key), (LPWSTR)name_##key }
77 static UNICODE_STRING root_key_names[NB_SPECIAL_ROOT_KEYS] =
78 {
79 DECL_STR(CLASSES_ROOT),
80 { 0, 0, NULL }, /* HKEY_CURRENT_USER is determined dynamically */
81 DECL_STR(LOCAL_MACHINE),
82 DECL_STR(USERS),
83 DECL_STR(PERFORMANCE_DATA),
84 DECL_STR(CURRENT_CONFIG),
85 DECL_STR(DYN_DATA)
86 };
87 #undef DECL_STR
88
89
90 /* check if value type needs string conversion (Ansi<->Unicode) */
91 inline static int is_string( DWORD type )
92 {
93 return (type == REG_SZ) || (type == REG_EXPAND_SZ) || (type == REG_MULTI_SZ);
94 }
95
96 /* check if current version is NT or Win95 */
97 inline static int is_version_nt(void)
98 {
99 return !(GetVersion() & 0x80000000);
100 }
101
102 /* create one of the HKEY_* special root keys */
103 static HKEY create_special_root_hkey( HANDLE hkey, DWORD access )
104 {
105 HKEY ret = 0;
106 int idx = (UINT_PTR)hkey - (UINT_PTR)HKEY_SPECIAL_ROOT_FIRST;
107
108 if (hkey == HKEY_CURRENT_USER)
109 {
110 if (RtlOpenCurrentUser( access, &hkey )) return 0;
111 TRACE( "HKEY_CURRENT_USER -> %p\n", hkey );
112
113 /* don't cache the key in the table if caching is disabled */
114 if (hkcu_cache_disabled)
115 return hkey;
116 }
117 else
118 {
119 OBJECT_ATTRIBUTES attr;
120
121 attr.Length = sizeof(attr);
122 attr.RootDirectory = 0;
123 attr.ObjectName = &root_key_names[idx];
124 attr.Attributes = 0;
125 attr.SecurityDescriptor = NULL;
126 attr.SecurityQualityOfService = NULL;
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,%ld,%p,%p(%ld),%p,%p,%p,%p)\n", hkey, index, name, name_len,
448 name_len ? *name_len : -1, reserved, class, class_len, ft );
449
450 if (reserved) return ERROR_INVALID_PARAMETER;
451 if (!(hkey = get_special_root_hkey( hkey ))) return ERROR_INVALID_HANDLE;
452
453 status = NtEnumerateKey( hkey, index, KeyNodeInformation,
454 buffer, sizeof(buffer), &total_size );
455
456 while (status == STATUS_BUFFER_OVERFLOW)
457 {
458 /* retry with a dynamically allocated buffer */
459 if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
460 if (!(buf_ptr = HeapAlloc( GetProcessHeap(), 0, total_size )))
461 return ERROR_NOT_ENOUGH_MEMORY;
462 info = (KEY_NODE_INFORMATION *)buf_ptr;
463 status = NtEnumerateKey( hkey, index, KeyNodeInformation,
464 buf_ptr, total_size, &total_size );
465 }
466
467 if (!status)
468 {
469 DWORD len = 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,%ld,%p,%p(%ld),%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,%ld,%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,%ld,%p,%p=%ld)\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,%ld,%p,%p=%ld)\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,%ld,%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=%08lx\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=%08lx\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,%ld,%s,%ld)\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,%ld,%s,%ld)\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=%ld)\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 total_size = info_size;
1146
1147 status = NtQueryValueKey( hkey, &name_str, KeyValuePartialInformation,
1148 buffer, total_size, &total_size );
1149 if (status && status != STATUS_BUFFER_OVERFLOW) goto done;
1150
1151 if (data)
1152 {
1153 /* retry with a dynamically allocated buffer */
1154 while (status == STATUS_BUFFER_OVERFLOW && total_size - info_size <= *count)
1155 {
1156 if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
1157 if (!(buf_ptr = HeapAlloc( GetProcessHeap(), 0, total_size )))
1158 return ERROR_NOT_ENOUGH_MEMORY;
1159 info = (KEY_VALUE_PARTIAL_INFORMATION *)buf_ptr;
1160 status = NtQueryValueKey( hkey, &name_str, KeyValuePartialInformation,
1161 buf_ptr, total_size, &total_size );
1162 }
1163
1164 if (!status)
1165 {
1166 memcpy( data, buf_ptr + info_size, total_size - info_size );
1167 /* if the type is REG_SZ and data is not 0-terminated
1168 * and there is enough space in the buffer NT appends a \0 */
1169 if (total_size - info_size <= *count-sizeof(WCHAR) && is_string(info->Type))
1170 {
1171 WCHAR *ptr = (WCHAR *)(data + total_size - info_size);
1172 if (ptr > (WCHAR *)data && ptr[-1]) *ptr = 0;
1173 }
1174 }
1175 else if (status != STATUS_BUFFER_OVERFLOW) goto done;
1176 }
1177 else status = STATUS_SUCCESS;
1178
1179 if (type) *type = info->Type;
1180 if (count) *count = total_size - info_size;
1181
1182 done:
1183 if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
1184 return RtlNtStatusToDosError(status);
1185 }
1186
1187
1188 /******************************************************************************
1189 * RegQueryValueExA [ADVAPI32.@]
1190 *
1191 * Get the type and contents of a specified value under with a key.
1192 *
1193 * PARAMS
1194 * hkey [I] Handle of the key to query
1195 * name [I] Name of value under hkey to query
1196 * reserved [I] Reserved - must be NULL
1197 * type [O] Destination for the value type, or NULL if not required
1198 * data [O] Destination for the values contents, or NULL if not required
1199 * count [I/O] Size of data, updated with the number of bytes returned
1200 *
1201 * RETURNS
1202 * Success: ERROR_SUCCESS. *count is updated with the number of bytes copied to data.
1203 * Failure: ERROR_INVALID_HANDLE, if hkey is invalid.
1204 * ERROR_INVALID_PARAMETER, if any other parameter is invalid.
1205 * ERROR_MORE_DATA, if on input *count is too small to hold the contents.
1206 *
1207 * NOTES
1208 * MSDN states that if data is too small it is partially filled. In reality
1209 * it remains untouched.
1210 */
1211 LONG WINAPI RegQueryValueExA( HKEY hkey, LPCSTR name, LPDWORD reserved, LPDWORD type,
1212 LPBYTE data, LPDWORD count )
1213 {
1214 NTSTATUS status;
1215 ANSI_STRING nameA;
1216 DWORD total_size;
1217 char buffer[256], *buf_ptr = buffer;
1218 KEY_VALUE_PARTIAL_INFORMATION *info = (KEY_VALUE_PARTIAL_INFORMATION *)buffer;
1219 static const int info_size = offsetof( KEY_VALUE_PARTIAL_INFORMATION, Data );
1220
1221 TRACE("(%p,%s,%p,%p,%p,%p=%ld)\n",
1222 hkey, debugstr_a(name), reserved, type, data, count, count ? *count : 0 );
1223
1224 if ((data && !count) || reserved) return ERROR_INVALID_PARAMETER;
1225 if (!(hkey = get_special_root_hkey( hkey ))) return ERROR_INVALID_HANDLE;
1226
1227 RtlInitAnsiString( &nameA, name );
1228 if ((status = RtlAnsiStringToUnicodeString( &NtCurrentTeb()->StaticUnicodeString,
1229 &nameA, FALSE )))
1230 return RtlNtStatusToDosError(status);
1231
1232 status = NtQueryValueKey( hkey, &NtCurrentTeb()->StaticUnicodeString,
1233 KeyValuePartialInformation, buffer, sizeof(buffer), &total_size );
1234 if (status && status != STATUS_BUFFER_OVERFLOW) goto done;
1235
1236 /* we need to fetch the contents for a string type even if not requested,
1237 * because we need to compute the length of the ASCII string. */
1238 if (data || is_string(info->Type))
1239 {
1240 /* retry with a dynamically allocated buffer */
1241 while (status == STATUS_BUFFER_OVERFLOW)
1242 {
1243 if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
1244 if (!(buf_ptr = HeapAlloc( GetProcessHeap(), 0, total_size )))
1245 {
1246 status = STATUS_NO_MEMORY;
1247 goto done;
1248 }
1249 info = (KEY_VALUE_PARTIAL_INFORMATION *)buf_ptr;
1250 status = NtQueryValueKey( hkey, &NtCurrentTeb()->StaticUnicodeString,
1251 KeyValuePartialInformation, buf_ptr, total_size, &total_size );
1252 }
1253
1254 if (status) goto done;
1255
1256 if (is_string(info->Type))
1257 {
1258 DWORD len;
1259
1260 RtlUnicodeToMultiByteSize( &len, (WCHAR *)(buf_ptr + info_size),
1261 total_size - info_size );
1262 if (data && len)
1263 {
1264 if (len > *count) status = STATUS_BUFFER_OVERFLOW;
1265 else
1266 {
1267 RtlUnicodeToMultiByteN( (char*)data, len, NULL, (WCHAR *)(buf_ptr + info_size),
1268 total_size - info_size );
1269 /* if the type is REG_SZ and data is not 0-terminated
1270 * and there is enough space in the buffer NT appends a \0 */
1271 if (len < *count && data[len-1]) data[len] = 0;
1272 }
1273 }
1274 total_size = len + info_size;
1275 }
1276 else if (data)
1277 {
1278 if (total_size - info_size > *count) status = STATUS_BUFFER_OVERFLOW;
1279 else memcpy( data, buf_ptr + info_size, total_size - info_size );
1280 }
1281 }
1282 else status = STATUS_SUCCESS;
1283
1284 if (type) *type = info->Type;
1285 if (count) *count = total_size - info_size;
1286
1287 done:
1288 if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
1289 return RtlNtStatusToDosError(status);
1290 }
1291
1292
1293 /******************************************************************************
1294 * RegQueryValueW [ADVAPI32.@]
1295 *
1296 * Retrieves the data associated with the default or unnamed value of a key.
1297 *
1298 * PARAMS
1299 * hkey [I] Handle to an open key.
1300 * name [I] Name of the subkey of hKey.
1301 * data [O] Receives the string associated with the default value
1302 * of the key.
1303 * count [I/O] Size of lpValue in bytes.
1304 *
1305 * RETURNS
1306 * Success: ERROR_SUCCESS
1307 * Failure: nonzero error code from Winerror.h
1308 */
1309 LONG WINAPI RegQueryValueW( HKEY hkey, LPCWSTR name, LPWSTR data, LPLONG count )
1310 {
1311 DWORD ret;
1312 HKEY subkey = hkey;
1313
1314 TRACE("(%p,%s,%p,%ld)\n", hkey, debugstr_w(name), data, count ? *count : 0 );
1315
1316 if (name && name[0])
1317 {
1318 if ((ret = RegOpenKeyW( hkey, name, &subkey )) != ERROR_SUCCESS) return ret;
1319 }
1320 ret = RegQueryValueExW( subkey, NULL, NULL, NULL, (LPBYTE)data, (LPDWORD)count );
1321 if (subkey != hkey) RegCloseKey( subkey );
1322 if (ret == ERROR_FILE_NOT_FOUND)
1323 {
1324 /* return empty string if default value not found */
1325 if (data) *data = 0;
1326 if (count) *count = sizeof(WCHAR);
1327 ret = ERROR_SUCCESS;
1328 }
1329 return ret;
1330 }
1331
1332
1333 /******************************************************************************
1334 * RegQueryValueA [ADVAPI32.@]
1335 *
1336 * See RegQueryValueW.
1337 */
1338 LONG WINAPI RegQueryValueA( HKEY hkey, LPCSTR name, LPSTR data, LPLONG count )
1339 {
1340 DWORD ret;
1341 HKEY subkey = hkey;
1342
1343 TRACE("(%p,%s,%p,%ld)\n", hkey, debugstr_a(name), data, count ? *count : 0 );
1344
1345 if (name && name[0])
1346 {
1347 if ((ret = RegOpenKeyA( hkey, name, &subkey )) != ERROR_SUCCESS) return ret;
1348 }
1349 ret = RegQueryValueExA( subkey, NULL, NULL, NULL, (LPBYTE)data, (LPDWORD)count );
1350 if (subkey != hkey) RegCloseKey( subkey );
1351 if (ret == ERROR_FILE_NOT_FOUND)
1352 {
1353 /* return empty string if default value not found */
1354 if (data) *data = 0;
1355 if (count) *count = 1;
1356 ret = ERROR_SUCCESS;
1357 }
1358 return ret;
1359 }
1360
1361
1362 /******************************************************************************
1363 * ADVAPI_ApplyRestrictions [internal]
1364 *
1365 * Helper function for RegGetValueA/W.
1366 */
1367 VOID ADVAPI_ApplyRestrictions( DWORD dwFlags, DWORD dwType, DWORD cbData,
1368 PLONG ret )
1369 {
1370 /* Check if the type is restricted by the passed flags */
1371 if (*ret == ERROR_SUCCESS || *ret == ERROR_MORE_DATA)
1372 {
1373 DWORD dwMask = 0;
1374
1375 switch (dwType)
1376 {
1377 case REG_NONE: dwMask = RRF_RT_REG_NONE; break;
1378 case REG_SZ: dwMask = RRF_RT_REG_SZ; break;
1379 case REG_EXPAND_SZ: dwMask = RRF_RT_REG_EXPAND_SZ; break;
1380 case REG_MULTI_SZ: dwMask = RRF_RT_REG_MULTI_SZ; break;
1381 case REG_BINARY: dwMask = RRF_RT_REG_BINARY; break;
1382 case REG_DWORD: dwMask = RRF_RT_REG_DWORD; break;
1383 case REG_QWORD: dwMask = RRF_RT_REG_QWORD; break;
1384 }
1385
1386 if (dwFlags & dwMask)
1387 {
1388 /* Type is not restricted, check for size mismatch */
1389 if (dwType == REG_BINARY)
1390 {
1391 DWORD cbExpect = 0;
1392
1393 if ((dwFlags & RRF_RT_DWORD) == RRF_RT_DWORD)
1394 cbExpect = 4;
1395 else if ((dwFlags & RRF_RT_DWORD) == RRF_RT_QWORD)
1396 cbExpect = 8;
1397
1398 if (cbExpect && cbData != cbExpect)
1399 *ret = ERROR_DATATYPE_MISMATCH;
1400 }
1401 }
1402 else *ret = ERROR_UNSUPPORTED_TYPE;
1403 }
1404 }
1405
1406
1407 /******************************************************************************
1408 * RegGetValueW [ADVAPI32.@]
1409 *
1410 * Retrieves the type and data for a value name associated with a key
1411 * optionally expanding it's content and restricting it's type.
1412 *
1413 * PARAMS
1414 * hKey [I] Handle to an open key.
1415 * pszSubKey [I] Name of the subkey of hKey.
1416 * pszValue [I] Name of value under hKey/szSubKey to query.
1417 * dwFlags [I] Flags restricting the value type to retrieve.
1418 * pdwType [O] Destination for the values type, may be NULL.
1419 * pvData [O] Destination for the values content, may be NULL.
1420 * pcbData [I/O] Size of pvData, updated with the size required to
1421 * retrieve the whole content.
1422 *
1423 * RETURNS
1424 * Success: ERROR_SUCCESS
1425 * Failure: nonzero error code from Winerror.h
1426 *
1427 * NOTES
1428 * - Unless RRF_NOEXPAND is specified REG_EXPAND_SZ is automatically expanded
1429 * and REG_SZ is retrieved instead.
1430 * - Restrictions are applied after expanding, using RRF_RT_REG_EXPAND_SZ
1431 * without RRF_NOEXPAND is thus not allowed.
1432 */
1433 LONG WINAPI RegGetValueW( HKEY hKey, LPCWSTR pszSubKey, LPCWSTR pszValue,
1434 DWORD dwFlags, LPDWORD pdwType, PVOID pvData,
1435 LPDWORD pcbData )
1436 {
1437 DWORD dwType, cbData = pcbData ? *pcbData : 0;
1438 PVOID pvBuf = NULL;
1439 LONG ret;
1440
1441 TRACE("(%p,%s,%s,%ld,%p,%p,%p=%ld)\n",
1442 hKey, debugstr_w(pszSubKey), debugstr_w(pszValue), dwFlags, pdwType,
1443 pvData, pcbData, cbData);
1444
1445 if ((dwFlags & RRF_RT_REG_EXPAND_SZ) && !(dwFlags & RRF_NOEXPAND))
1446 return ERROR_INVALID_PARAMETER;
1447
1448 if (pszSubKey && pszSubKey[0])
1449 {
1450 ret = RegOpenKeyExW(hKey, pszSubKey, 0, KEY_QUERY_VALUE, &hKey);
1451 if (ret != ERROR_SUCCESS) return ret;
1452 }
1453
1454 ret = RegQueryValueExW(hKey, pszValue, NULL, &dwType, pvData, &cbData);
1455
1456 /* If we are going to expand we need to read in the whole the value even
1457 * if the passed buffer was too small as the expanded string might be
1458 * smaller than the unexpanded one and could fit into cbData bytes. */
1459 if ((ret == ERROR_SUCCESS || ret == ERROR_MORE_DATA) &&
1460 (dwType == REG_EXPAND_SZ && !(dwFlags & RRF_NOEXPAND)))
1461 {
1462 do {
1463 HeapFree(GetProcessHeap(), 0, pvBuf);
1464
1465 pvBuf = HeapAlloc(GetProcessHeap(), 0, cbData);
1466 if (!pvBuf)
1467 {
1468 ret = ERROR_NOT_ENOUGH_MEMORY;
1469 break;
1470 }
1471
1472 if (ret == ERROR_MORE_DATA)
1473 ret = RegQueryValueExW(hKey, pszValue, NULL,
1474 &dwType, pvBuf, &cbData);
1475 else
1476 {
1477 /* Even if cbData was large enough we have to copy the
1478 * string since ExpandEnvironmentStrings can't handle
1479 * overlapping buffers. */
1480 CopyMemory(pvBuf, pvData, cbData);
1481 }
1482
1483 /* Both the type or the value itself could have been modified in
1484 * between so we have to keep retrying until the buffer is large
1485 * enough or we no longer have to expand the value. */
1486 } while (dwType == REG_EXPAND_SZ && ret == ERROR_MORE_DATA);
1487
1488 if (ret == ERROR_SUCCESS)
1489 {
1490 if (dwType == REG_EXPAND_SZ)
1491 {
1492 cbData = ExpandEnvironmentStringsW(pvBuf, pvData,
1493 pcbData ? *pcbData : 0);
1494 dwType = REG_SZ;
1495 if(pcbData && cbData > *pcbData)
1496 ret = ERROR_MORE_DATA;
1497 }
1498 else if (pcbData)
1499 CopyMemory(pvData, pvBuf, *pcbData);
1500 }
1501
1502 HeapFree(GetProcessHeap(), 0, pvBuf);
1503 }
1504
1505 if (pszSubKey && pszSubKey[0])
1506 RegCloseKey(hKey);
1507
1508 ADVAPI_ApplyRestrictions(dwFlags, dwType, cbData, &ret);
1509
1510 if (pcbData && ret != ERROR_SUCCESS && (dwFlags & RRF_ZEROONFAILURE))
1511 ZeroMemory(pvData, *pcbData);
1512
1513 if (pdwType) *pdwType = dwType;
1514 if (pcbData) *pcbData = cbData;
1515
1516 return ret;
1517 }
1518
1519
1520 /******************************************************************************
1521 * RegGetValueA [ADVAPI32.@]
1522 *
1523 * See RegGetValueW.
1524 */
1525 LONG WINAPI RegGetValueA( HKEY hKey, LPCSTR pszSubKey, LPCSTR pszValue,
1526 DWORD dwFlags, LPDWORD pdwType, PVOID pvData,
1527 LPDWORD pcbData )
1528 {
1529 DWORD dwType, cbData = pcbData ? *pcbData : 0;
1530 PVOID pvBuf = NULL;
1531 LONG ret;
1532
1533 TRACE("(%p,%s,%s,%ld,%p,%p,%p=%ld)\n",
1534 hKey, pszSubKey, pszValue, dwFlags, pdwType, pvData, pcbData,
1535 cbData);
1536
1537 if ((dwFlags & RRF_RT_REG_EXPAND_SZ) && !(dwFlags & RRF_NOEXPAND))
1538 return ERROR_INVALID_PARAMETER;
1539
1540 if (pszSubKey && pszSubKey[0])
1541 {
1542 ret = RegOpenKeyExA(hKey, pszSubKey, 0, KEY_QUERY_VALUE, &hKey);
1543 if (ret != ERROR_SUCCESS) return ret;
1544 }
1545
1546 ret = RegQueryValueExA(hKey, pszValue, NULL, &dwType, pvData, &cbData);
1547
1548 /* If we are going to expand we need to read in the whole the value even
1549 * if the passed buffer was too small as the expanded string might be
1550 * smaller than the unexpanded one and could fit into cbData bytes. */
1551 if ((ret == ERROR_SUCCESS || ret == ERROR_MORE_DATA) &&
1552 (dwType == REG_EXPAND_SZ && !(dwFlags & RRF_NOEXPAND)))
1553 {
1554 do {
1555 HeapFree(GetProcessHeap(), 0, pvBuf);
1556
1557 pvBuf = HeapAlloc(GetProcessHeap(), 0, cbData);
1558 if (!pvBuf)
1559 {
1560 ret = ERROR_NOT_ENOUGH_MEMORY;
1561 break;
1562 }
1563
1564 if (ret == ERROR_MORE_DATA)
1565 ret = RegQueryValueExA(hKey, pszValue, NULL,
1566 &dwType, pvBuf, &cbData);
1567 else
1568 {
1569 /* Even if cbData was large enough we have to copy the
1570 * string since ExpandEnvironmentStrings can't handle
1571 * overlapping buffers. */
1572 CopyMemory(pvBuf, pvData, cbData);
1573 }
1574
1575 /* Both the type or the value itself could have been modified in
1576 * between so we have to keep retrying until the buffer is large
1577 * enough or we no longer have to expand the value. */
1578 } while (dwType == REG_EXPAND_SZ && ret == ERROR_MORE_DATA);
1579
1580 if (ret == ERROR_SUCCESS)
1581 {
1582 if (dwType == REG_EXPAND_SZ)
1583 {
1584 cbData = ExpandEnvironmentStringsA(pvBuf, pvData,
1585 pcbData ? *pcbData : 0);
1586 dwType = REG_SZ;
1587 if(pcbData && cbData > *pcbData)
1588 ret = ERROR_MORE_DATA;
1589 }
1590 else if (pcbData)
1591 CopyMemory(pvData, pvBuf, *pcbData);
1592 }
1593
1594 HeapFree(GetProcessHeap(), 0, pvBuf);
1595 }
1596
1597 if (pszSubKey && pszSubKey[0])
1598 RegCloseKey(hKey);
1599
1600 ADVAPI_ApplyRestrictions(dwFlags, dwType, cbData, &ret);
1601
1602 if (pcbData && ret != ERROR_SUCCESS && (dwFlags & RRF_ZEROONFAILURE))
1603 ZeroMemory(pvData, *pcbData);
1604
1605 if (pdwType) *pdwType = dwType;
1606 if (pcbData) *pcbData = cbData;
1607
1608 return ret;
1609 }
1610
1611
1612 /******************************************************************************
1613 * RegEnumValueW [ADVAPI32.@]
1614 *
1615 * Enumerates the values for the specified open registry key.
1616 *
1617 * PARAMS
1618 * hkey [I] Handle to key to query
1619 * index [I] Index of value to query
1620 * value [O] Value string
1621 * val_count [I/O] Size of value buffer (in wchars)
1622 * reserved [I] Reserved
1623 * type [O] Type code
1624 * data [O] Value data
1625 * count [I/O] Size of data buffer (in bytes)
1626 *
1627 * RETURNS
1628 * Success: ERROR_SUCCESS
1629 * Failure: nonzero error code from Winerror.h
1630 */
1631
1632 LONG WINAPI RegEnumValueW( HKEY hkey, DWORD index, LPWSTR value, LPDWORD val_count,
1633 LPDWORD reserved, LPDWORD type, LPBYTE data, LPDWORD count )
1634 {
1635 NTSTATUS status;
1636 DWORD total_size;
1637 char buffer[256], *buf_ptr = buffer;
1638 KEY_VALUE_FULL_INFORMATION *info = (KEY_VALUE_FULL_INFORMATION *)buffer;
1639 static const int info_size = offsetof( KEY_VALUE_FULL_INFORMATION, Name );
1640
1641 TRACE("(%p,%ld,%p,%p,%p,%p,%p,%p)\n",
1642 hkey, index, value, val_count, reserved, type, data, count );
1643
1644 /* NT only checks count, not val_count */
1645 if ((data && !count) || reserved) return ERROR_INVALID_PARAMETER;
1646 if (!(hkey = get_special_root_hkey( hkey ))) return ERROR_INVALID_HANDLE;
1647
1648 total_size = info_size + (MAX_PATH + 1) * sizeof(WCHAR);
1649 if (data) total_size += *count;
1650 total_size = min( sizeof(buffer), total_size );
1651
1652 status = NtEnumerateValueKey( hkey, index, KeyValueFullInformation,
1653 buffer, total_size, &total_size );
1654 if (status && status != STATUS_BUFFER_OVERFLOW) goto done;
1655
1656 if (value || data)
1657 {
1658 /* retry with a dynamically allocated buffer */
1659 while (status == STATUS_BUFFER_OVERFLOW)
1660 {
1661 if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
1662 if (!(buf_ptr = HeapAlloc( GetProcessHeap(), 0, total_size )))
1663 return ERROR_NOT_ENOUGH_MEMORY;
1664 info = (KEY_VALUE_FULL_INFORMATION *)buf_ptr;
1665 status = NtEnumerateValueKey( hkey, index, KeyValueFullInformation,
1666 buf_ptr, total_size, &total_size );
1667 }
1668
1669 if (status) goto done;
1670
1671 if (value)
1672 {
1673 if (info->NameLength/sizeof(WCHAR) >= *val_count)
1674 {
1675 status = STATUS_BUFFER_OVERFLOW;
1676 goto overflow;
1677 }
1678 memcpy( value, info->Name, info->NameLength );
1679 *val_count = info->NameLength / sizeof(WCHAR);
1680 value[*val_count] = 0;
1681 }
1682
1683 if (data)
1684 {
1685 if (total_size - info->DataOffset > *count)
1686 {
1687 status = STATUS_BUFFER_OVERFLOW;
1688 goto overflow;
1689 }
1690 memcpy( data, buf_ptr + info->DataOffset, total_size - info->DataOffset );
1691 if (total_size - info->DataOffset <= *count-sizeof(WCHAR) && is_string(info->Type))
1692 {
1693 /* if the type is REG_SZ and data is not 0-terminated
1694 * and there is enough space in the buffer NT appends a \0 */
1695 WCHAR *ptr = (WCHAR *)(data + total_size - info->DataOffset);
1696 if (ptr > (WCHAR *)data && ptr[-1]) *ptr = 0;
1697 }
1698 }
1699 }
1700 else status = STATUS_SUCCESS;
1701
1702 overflow:
1703 if (type) *type = info->Type;
1704 if (count) *count = info->DataLength;
1705
1706 done:
1707 if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
1708 return RtlNtStatusToDosError(status);
1709 }
1710
1711
1712 /******************************************************************************
1713 * RegEnumValueA [ADVAPI32.@]
1714 *
1715 * See RegEnumValueW.
1716 */
1717 LONG WINAPI RegEnumValueA( HKEY hkey, DWORD index, LPSTR value, LPDWORD val_count,
1718 LPDWORD reserved, LPDWORD type, LPBYTE data, LPDWORD count )
1719 {
1720 NTSTATUS status;
1721 DWORD total_size;
1722 char buffer[256], *buf_ptr = buffer;
1723 KEY_VALUE_FULL_INFORMATION *info = (KEY_VALUE_FULL_INFORMATION *)buffer;
1724 static const int info_size = offsetof( KEY_VALUE_FULL_INFORMATION, Name );
1725
1726 TRACE("(%p,%ld,%p,%p,%p,%p,%p,%p)\n",
1727 hkey, index, value, val_count, reserved, type, data, count );
1728
1729 /* NT only checks count, not val_count */
1730 if ((data && !count) || reserved) return ERROR_INVALID_PARAMETER;
1731 if (!(hkey = get_special_root_hkey( hkey ))) return ERROR_INVALID_HANDLE;
1732
1733 total_size = info_size + (MAX_PATH + 1) * sizeof(WCHAR);
1734 if (data) total_size += *count;
1735 total_size = min( sizeof(buffer), total_size );
1736
1737 status = NtEnumerateValueKey( hkey, index, KeyValueFullInformation,
1738 buffer, total_size, &total_size );
1739 if (status && status != STATUS_BUFFER_OVERFLOW) goto done;
1740
1741 /* we need to fetch the contents for a string type even if not requested,
1742 * because we need to compute the length of the ASCII string. */
1743 if (value || data || is_string(info->Type))
1744 {
1745 /* retry with a dynamically allocated buffer */
1746 while (status == STATUS_BUFFER_OVERFLOW)
1747 {
1748 if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
1749 if (!(buf_ptr = HeapAlloc( GetProcessHeap(), 0, total_size )))
1750 return ERROR_NOT_ENOUGH_MEMORY;
1751 info = (KEY_VALUE_FULL_INFORMATION *)buf_ptr;
1752 status = NtEnumerateValueKey( hkey, index, KeyValueFullInformation,
1753 buf_ptr, total_size, &total_size );
1754 }
1755
1756 if (status) goto done;
1757
1758 if (is_string(info->Type))
1759 {
1760 DWORD len;
1761 RtlUnicodeToMultiByteSize( &len, (WCHAR *)(buf_ptr + info->DataOffset),
1762 total_size - info->DataOffset );
1763 if (data && len)
1764 {
1765 if (len > *count) status = STATUS_BUFFER_OVERFLOW;
1766 else
1767 {
1768 RtlUnicodeToMultiByteN( (char*)data, len, NULL, (WCHAR *)(buf_ptr + info->DataOffset),
1769 total_size - info->DataOffset );
1770 /* if the type is REG_SZ and data is not 0-terminated
1771 * and there is enough space in the buffer NT appends a \0 */
1772 if (len < *count && data[len-1]) data[len] = 0;
1773 }
1774 }
1775 info->DataLength = len;
1776 }
1777 else if (data)
1778 {
1779 if (total_size - info->DataOffset > *count) status = STATUS_BUFFER_OVERFLOW;
1780 else memcpy( data, buf_ptr + info->DataOffset, total_size - info->DataOffset );
1781 }
1782
1783 if (value && !status)
1784 {
1785 DWORD len;
1786
1787 RtlUnicodeToMultiByteSize( &len, info->Name, info->NameLength );
1788 if (len >= *val_count)
1789 {
1790 status = STATUS_BUFFER_OVERFLOW;
1791 if (*val_count)
1792 {
1793 len = *val_count - 1;
1794 RtlUnicodeToMultiByteN( value, len, NULL, info->Name, info->NameLength );
1795 value[len] = 0;
1796 }
1797 }
1798 else
1799 {
1800 RtlUnicodeToMultiByteN( value, len, NULL, info->Name, info->NameLength );
1801 value[len] = 0;
1802 *val_count = len;
1803 }
1804 }
1805 }
1806 else status = STATUS_SUCCESS;
1807
1808 if (type) *type = info->Type;
1809 if (count) *count = info->DataLength;
1810
1811 done:
1812 if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
1813 return RtlNtStatusToDosError(status);
1814 }
1815
1816
1817
1818 /******************************************************************************
1819 * RegDeleteValueW [ADVAPI32.@]
1820 *
1821 * See RegDeleteValueA.
1822 */
1823 LONG WINAPI RegDeleteValueW( HKEY hkey, LPCWSTR name )
1824 {
1825 UNICODE_STRING nameW;
1826
1827 if (!(hkey = get_special_root_hkey( hkey ))) return ERROR_INVALID_HANDLE;
1828
1829 RtlInitUnicodeString( &nameW, name );
1830 return RtlNtStatusToDosError( NtDeleteValueKey( hkey, &nameW ) );
1831 }
1832
1833
1834 /******************************************************************************
1835 * RegDeleteValueA [ADVAPI32.@]
1836 *
1837 * Delete a value from the registry.
1838 *
1839 * PARAMS
1840 * hkey [I] Registry handle of the key holding the value
1841 * name [I] Name of the value under hkey to delete
1842 *
1843 * RETURNS
1844 * Success: ERROR_SUCCESS
1845 * Failure: nonzero error code from Winerror.h
1846 */
1847 LONG WINAPI RegDeleteValueA( HKEY hkey, LPCSTR name )
1848 {
1849 STRING nameA;
1850 NTSTATUS status;
1851
1852 if (!(hkey = get_special_root_hkey( hkey ))) return ERROR_INVALID_HANDLE;
1853
1854 RtlInitAnsiString( &nameA, name );
1855 if (!(status = RtlAnsiStringToUnicodeString( &NtCurrentTeb()->StaticUnicodeString,
1856 &nameA, FALSE )))
1857 status = NtDeleteValueKey( hkey, &NtCurrentTeb()->StaticUnicodeString );
1858 return RtlNtStatusToDosError( status );
1859 }
1860
1861
1862 /******************************************************************************
1863 * RegLoadKeyW [ADVAPI32.@]
1864 *
1865 * Create a subkey under HKEY_USERS or HKEY_LOCAL_MACHINE and store
1866 * registration information from a specified file into that subkey.
1867 *
1868 * PARAMS
1869 * hkey [I] Handle of open key
1870 * subkey [I] Address of name of subkey
1871 * filename [I] Address of filename for registry information
1872 *
1873 * RETURNS
1874 * Success: ERROR_SUCCES
1875 * Failure: nonzero error code from Winerror.h
1876 */
1877 LONG WINAPI RegLoadKeyW( HKEY hkey, LPCWSTR subkey, LPCWSTR filename )
1878 {
1879 OBJECT_ATTRIBUTES destkey, file;
1880 UNICODE_STRING subkeyW, filenameW;
1881
1882 if (!(hkey = get_special_root_hkey(hkey))) return ERROR_INVALID_HANDLE;
1883
1884 destkey.Length = sizeof(destkey);
1885 destkey.RootDirectory = hkey; /* root key: HKLM or HKU */
1886 destkey.ObjectName = &subkeyW; /* name of the key */
1887 destkey.Attributes = 0;
1888 destkey.SecurityDescriptor = NULL;
1889 destkey.SecurityQualityOfService = NULL;
1890 RtlInitUnicodeString(&subkeyW, subkey);
1891
1892 file.Length = sizeof(file);
1893 file.RootDirectory = NULL;
1894 file.ObjectName = &filenameW; /* file containing the hive */
1895 file.Attributes = OBJ_CASE_INSENSITIVE;
1896 file.SecurityDescriptor = NULL;
1897 file.SecurityQualityOfService = NULL;
1898 RtlDosPathNameToNtPathName_U(filename, &filenameW, NULL, NULL);
1899
1900 return RtlNtStatusToDosError( NtLoadKey(&destkey, &file) );
1901 }
1902
1903
1904 /******************************************************************************
1905 * RegLoadKeyA [ADVAPI32.@]
1906 *
1907 * See RegLoadKeyW.
1908 */
1909 LONG WINAPI RegLoadKeyA( HKEY hkey, LPCSTR subkey, LPCSTR filename )
1910 {
1911 UNICODE_STRING subkeyW, filenameW;
1912 STRING subkeyA, filenameA;
1913 NTSTATUS status;
1914
1915 RtlInitAnsiString(&subkeyA, subkey);
1916 RtlInitAnsiString(&filenameA, filename);
1917
1918 if ((status = RtlAnsiStringToUnicodeString(&subkeyW, &subkeyA, TRUE)))
1919 return RtlNtStatusToDosError(status);
1920
1921 if ((status = RtlAnsiStringToUnicodeString(&filenameW, &filenameA, TRUE)))
1922 return RtlNtStatusToDosError(status);
1923
1924 return RegLoadKeyW(hkey, subkeyW.Buffer, filenameW.Buffer);
1925 }
1926
1927
1928 /******************************************************************************
1929 * RegSaveKeyW [ADVAPI32.@]
1930 *
1931 * Save a key and all of its subkeys and values to a new file in the standard format.
1932 *
1933 * PARAMS
1934 * hkey [I] Handle of key where save begins
1935 * lpFile [I] Address of filename to save to
1936 * sa [I] Address of security structure
1937 *
1938 * RETURNS
1939 * Success: ERROR_SUCCESS
1940 * Failure: nonzero error code from Winerror.h
1941 */
1942 LONG WINAPI RegSaveKeyW( HKEY hkey, LPCWSTR file, LPSECURITY_ATTRIBUTES sa )
1943 {
1944 static const WCHAR format[] =
1945 {'r','e','g','%','0','4','x','.','t','m','p',0};
1946 WCHAR buffer[MAX_PATH];
1947 int count = 0;
1948 LPWSTR nameW;
1949 DWORD ret, err;
1950 HANDLE handle;
1951
1952 TRACE( "(%p,%s,%p)\n", hkey, debugstr_w(file), sa );
1953
1954 if (!file || !*file) return ERROR_INVALID_PARAMETER;
1955 if (!(hkey = get_special_root_hkey( hkey ))) return ERROR_INVALID_HANDLE;
1956
1957 err = GetLastError();
1958 GetFullPathNameW( file, sizeof(buffer)/sizeof(WCHAR), buffer, &nameW );
1959
1960 for (;;)
1961 {
1962 snprintfW( nameW, 16, format, count++ );
1963 handle = CreateFileW( buffer, GENERIC_WRITE, 0, NULL,
1964 CREATE_NEW, FILE_ATTRIBUTE_NORMAL, 0 );
1965 if (handle != INVALID_HANDLE_VALUE) break;
1966 if ((ret = GetLastError()) != ERROR_ALREADY_EXISTS) goto done;
1967
1968 /* Something gone haywire ? Please report if this happens abnormally */
1969 if (count >= 100)
1970 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);
1971 }
1972
1973 ret = RtlNtStatusToDosError(NtSaveKey(hkey, handle));
1974
1975 CloseHandle( handle );
1976 if (!ret)
1977 {
1978 if (!MoveFileExW( buffer, file, MOVEFILE_REPLACE_EXISTING ))
1979 {
1980 ERR( "Failed to move %s to %s\n", debugstr_w(buffer),
1981 debugstr_w(file) );
1982 ret = GetLastError();
1983 }
1984 }
1985 if (ret) DeleteFileW( buffer );
1986
1987 done:
1988 SetLastError( err ); /* restore last error code */
1989 return ret;
1990 }
1991
1992
1993 /******************************************************************************
1994 * RegSaveKeyA [ADVAPI32.@]
1995 *
1996 * See RegSaveKeyW.
1997 */
1998 LONG WINAPI RegSaveKeyA( HKEY hkey, LPCSTR file, LPSECURITY_ATTRIBUTES sa )
1999 {
2000 UNICODE_STRING *fileW = &NtCurrentTeb()->StaticUnicodeString;
2001 NTSTATUS status;
2002 STRING fileA;
2003
2004 RtlInitAnsiString(&fileA, file);
2005 if ((status = RtlAnsiStringToUnicodeString(fileW, &fileA, FALSE)))
2006 return RtlNtStatusToDosError( status );
2007 return RegSaveKeyW(hkey, fileW->Buffer, sa);
2008 }
2009
2010
2011 /******************************************************************************
2012 * RegRestoreKeyW [ADVAPI32.@]
2013 *
2014 * Read the registry information from a file and copy it over a key.
2015 *
2016 * PARAMS
2017 * hkey [I] Handle of key where restore begins
2018 * lpFile [I] Address of filename containing saved tree
2019 * dwFlags [I] Optional flags
2020 *
2021 * RETURNS
2022 * Success: ERROR_SUCCESS
2023 * Failure: nonzero error code from Winerror.h
2024 */
2025 LONG WINAPI RegRestoreKeyW( HKEY hkey, LPCWSTR lpFile, DWORD dwFlags )
2026 {
2027 TRACE("(%p,%s,%ld)\n",hkey,debugstr_w(lpFile),dwFlags);
2028
2029 /* It seems to do this check before the hkey check */
2030 if (!lpFile || !*lpFile)
2031 return ERROR_INVALID_PARAMETER;
2032
2033 FIXME("(%p,%s,%ld): stub\n",hkey,debugstr_w(lpFile),dwFlags);
2034
2035 /* Check for file existence */
2036
2037 return ERROR_SUCCESS;
2038 }
2039
2040
2041 /******************************************************************************
2042 * RegRestoreKeyA [ADVAPI32.@]
2043 *
2044 * See RegRestoreKeyW.
2045 */
2046 LONG WINAPI RegRestoreKeyA( HKEY hkey, LPCSTR lpFile, DWORD dwFlags )
2047 {
2048 UNICODE_STRING lpFileW;
2049 LONG ret;
2050
2051 RtlCreateUnicodeStringFromAsciiz( &lpFileW, lpFile );
2052 ret = RegRestoreKeyW( hkey, lpFileW.Buffer, dwFlags );
2053 RtlFreeUnicodeString( &lpFileW );
2054 return ret;
2055 }
2056
2057
2058 /******************************************************************************
2059 * RegUnLoadKeyW [ADVAPI32.@]
2060 *
2061 * Unload a registry key and its subkeys from the registry.
2062 *
2063 * PARAMS
2064 * hkey [I] Handle of open key
2065 * lpSubKey [I] Address of name of subkey to unload
2066 *
2067 * RETURNS
2068 * Success: ERROR_SUCCESS
2069 * Failure: nonzero error code from Winerror.h
2070 */
2071 LONG WINAPI RegUnLoadKeyW( HKEY hkey, LPCWSTR lpSubKey )
2072 {
2073 DWORD ret;
2074 HKEY shkey;
2075
2076 TRACE("(%p,%s)\n",hkey, debugstr_w(lpSubKey));
2077
2078 ret = RegOpenKeyW(hkey,lpSubKey,&shkey);
2079 if( ret )
2080 return ERROR_INVALID_PARAMETER;
2081
2082 ret = RtlNtStatusToDosError(NtUnloadKey(shkey));
2083
2084 RegCloseKey(shkey);
2085
2086 return ret;
2087 }
2088
2089
2090 /******************************************************************************
2091 * RegUnLoadKeyA [ADVAPI32.@]
2092 *
2093 * See RegUnLoadKeyW.
2094 */
2095 LONG WINAPI RegUnLoadKeyA( HKEY hkey, LPCSTR lpSubKey )
2096 {
2097 UNICODE_STRING lpSubKeyW;
2098 LONG ret;
2099
2100 RtlCreateUnicodeStringFromAsciiz( &lpSubKeyW, lpSubKey );
2101 ret = RegUnLoadKeyW( hkey, lpSubKeyW.Buffer );
2102 RtlFreeUnicodeString( &lpSubKeyW );
2103 return ret;
2104 }
2105
2106
2107 /******************************************************************************
2108 * RegReplaceKeyW [ADVAPI32.@]
2109 *
2110 * Replace the file backing a registry key and all its subkeys with another file.
2111 *
2112 * PARAMS
2113 * hkey [I] Handle of open key
2114 * lpSubKey [I] Address of name of subkey
2115 * lpNewFile [I] Address of filename for file with new data
2116 * lpOldFile [I] Address of filename for backup file
2117 *
2118 * RETURNS
2119 * Success: ERROR_SUCCESS
2120 * Failure: nonzero error code from Winerror.h
2121 */
2122 LONG WINAPI RegReplaceKeyW( HKEY hkey, LPCWSTR lpSubKey, LPCWSTR lpNewFile,
2123 LPCWSTR lpOldFile )
2124 {
2125 FIXME("(%p,%s,%s,%s): stub\n", hkey, debugstr_w(lpSubKey),
2126 debugstr_w(lpNewFile),debugstr_w(lpOldFile));
2127 return ERROR_SUCCESS;
2128 }
2129
2130
2131 /******************************************************************************
2132 * RegReplaceKeyA [ADVAPI32.@]
2133 *
2134 * See RegReplaceKeyW.
2135 */
2136 LONG WINAPI RegReplaceKeyA( HKEY hkey, LPCSTR lpSubKey, LPCSTR lpNewFile,
2137 LPCSTR lpOldFile )
2138 {
2139 UNICODE_STRING lpSubKeyW;
2140 UNICODE_STRING lpNewFileW;
2141 UNICODE_STRING lpOldFileW;
2142 LONG ret;
2143
2144 RtlCreateUnicodeStringFromAsciiz( &lpSubKeyW, lpSubKey );
2145 RtlCreateUnicodeStringFromAsciiz( &lpOldFileW, lpOldFile );
2146 RtlCreateUnicodeStringFromAsciiz( &lpNewFileW, lpNewFile );
2147 ret = RegReplaceKeyW( hkey, lpSubKeyW.Buffer, lpNewFileW.Buffer, lpOldFileW.Buffer );
2148 RtlFreeUnicodeString( &lpOldFileW );
2149 RtlFreeUnicodeString( &lpNewFileW );
2150 RtlFreeUnicodeString( &lpSubKeyW );
2151 return ret;
2152 }
2153
2154
2155 /******************************************************************************
2156 * RegSetKeySecurity [ADVAPI32.@]
2157 *
2158 * Set the security of an open registry key.
2159 *
2160 * PARAMS
2161 * hkey [I] Open handle of key to set
2162 * SecurityInfo [I] Descriptor contents
2163 * pSecurityDesc [I] Address of descriptor for key
2164 *
2165 * RETURNS
2166 * Success: ERROR_SUCCESS
2167 * Failure: nonzero error code from Winerror.h
2168 */
2169 LONG WINAPI RegSetKeySecurity( HKEY hkey, SECURITY_INFORMATION SecurityInfo,
2170 PSECURITY_DESCRIPTOR pSecurityDesc )
2171 {
2172 TRACE("(%p,%ld,%p)\n",hkey,SecurityInfo,pSecurityDesc);
2173
2174 /* It seems to perform this check before the hkey check */
2175 if ((SecurityInfo & OWNER_SECURITY_INFORMATION) ||
2176 (SecurityInfo & GROUP_SECURITY_INFORMATION) ||
2177 (SecurityInfo & DACL_SECURITY_INFORMATION) ||
2178 (SecurityInfo & SACL_SECURITY_INFORMATION)) {
2179 /* Param OK */
2180 } else
2181 return ERROR_INVALID_PARAMETER;
2182
2183 if (!pSecurityDesc)
2184 return ERROR_INVALID_PARAMETER;
2185
2186 FIXME(":(%p,%ld,%p): stub\n",hkey,SecurityInfo,pSecurityDesc);
2187
2188 return ERROR_SUCCESS;
2189 }
2190
2191
2192 /******************************************************************************
2193 * RegGetKeySecurity [ADVAPI32.@]
2194 *
2195 * Get a copy of the security descriptor for a given registry key.
2196 *
2197 * PARAMS
2198 * hkey [I] Open handle of key to set
2199 * SecurityInformation [I] Descriptor contents
2200 * pSecurityDescriptor [O] Address of descriptor for key
2201 * lpcbSecurityDescriptor [I/O] Address of size of buffer and description
2202 *
2203 * RETURNS
2204 * Success: ERROR_SUCCESS
2205 * Failure: Error code
2206 */
2207 LONG WINAPI RegGetKeySecurity( HKEY hkey, SECURITY_INFORMATION SecurityInformation,
2208 PSECURITY_DESCRIPTOR pSecurityDescriptor,
2209 LPDWORD lpcbSecurityDescriptor )
2210 {
2211 TRACE("(%p,%ld,%p,%ld)\n",hkey,SecurityInformation,pSecurityDescriptor,
2212 lpcbSecurityDescriptor?*lpcbSecurityDescriptor:0);
2213
2214 /* FIXME: Check for valid SecurityInformation values */
2215
2216 if (*lpcbSecurityDescriptor < sizeof(SECURITY_DESCRIPTOR))
2217 return ERROR_INSUFFICIENT_BUFFER;
2218
2219 FIXME("(%p,%ld,%p,%ld): stub\n",hkey,SecurityInformation,
2220 pSecurityDescriptor,lpcbSecurityDescriptor?*lpcbSecurityDescriptor:0);
2221
2222 /* Do not leave security descriptor filled with garbage */
2223 RtlCreateSecurityDescriptor(pSecurityDescriptor, SECURITY_DESCRIPTOR_REVISION);
2224
2225 return ERROR_SUCCESS;
2226 }
2227
2228
2229 /******************************************************************************
2230 * RegFlushKey [ADVAPI32.@]
2231 *
2232 * Immediately write a registry key to registry.
2233 *
2234 * PARAMS
2235 * hkey [I] Handle of key to write
2236 *
2237 * RETURNS
2238 * Success: ERROR_SUCCESS
2239 * Failure: Error code
2240 */
2241 LONG WINAPI RegFlushKey( HKEY hkey )
2242 {
2243 hkey = get_special_root_hkey( hkey );
2244 if (!hkey) return ERROR_INVALID_HANDLE;
2245
2246 return RtlNtStatusToDosError( NtFlushKey( hkey ) );
2247 }
2248
2249
2250 /******************************************************************************
2251 * RegConnectRegistryW [ADVAPI32.@]
2252 *
2253 * Establishe a connection to a predefined registry key on another computer.
2254 *
2255 * PARAMS
2256 * lpMachineName [I] Address of name of remote computer
2257 * hHey [I] Predefined registry handle
2258 * phkResult [I] Address of buffer for remote registry handle
2259 *
2260 * RETURNS
2261 * Success: ERROR_SUCCESS
2262 * Failure: nonzero error code from Winerror.h
2263 */
2264 LONG WINAPI RegConnectRegistryW( LPCWSTR lpMachineName, HKEY hKey,
2265 PHKEY phkResult )
2266 {
2267 LONG ret;
2268
2269 TRACE("(%s,%p,%p): stub\n",debugstr_w(lpMachineName),hKey,phkResult);
2270
2271 if (!lpMachineName || !*lpMachineName) {
2272 /* Use the local machine name */
2273 ret = RegOpenKeyW( hKey, NULL, phkResult );
2274 }
2275 else {
2276 WCHAR compName[MAX_COMPUTERNAME_LENGTH + 1];
2277 DWORD len = sizeof(compName) / sizeof(WCHAR);
2278
2279 /* MSDN says lpMachineName must start with \\ : not so */
2280 if( lpMachineName[0] == '\\' && lpMachineName[1] == '\\')
2281 lpMachineName += 2;
2282 if (GetComputerNameW(compName, &len))
2283 {
2284 if (!strcmpiW(lpMachineName, compName))
2285 ret = RegOpenKeyW(hKey, NULL, phkResult);
2286 else
2287 {
2288 FIXME("Connect to %s is not supported.\n",debugstr_w(lpMachineName));
2289 ret = ERROR_BAD_NETPATH;
2290 }
2291 }
2292 else
2293 ret = GetLastError();
2294 }
2295 return ret;
2296 }
2297
2298
2299 /******************************************************************************
2300 * RegConnectRegistryA [ADVAPI32.@]
2301 *
2302 * See RegConnectRegistryW.
2303 */
2304 LONG WINAPI RegConnectRegistryA( LPCSTR machine, HKEY hkey, PHKEY reskey )
2305 {
2306 UNICODE_STRING machineW;
2307 LONG ret;
2308
2309 RtlCreateUnicodeStringFromAsciiz( &machineW, machine );
2310 ret = RegConnectRegistryW( machineW.Buffer, hkey, reskey );
2311 RtlFreeUnicodeString( &machineW );
2312 return ret;
2313 }
2314
2315
2316 /******************************************************************************
2317 * RegNotifyChangeKeyValue [ADVAPI32.@]
2318 *
2319 * Notify the caller about changes to the attributes or contents of a registry key.
2320 *
2321 * PARAMS
2322 * hkey [I] Handle of key to watch
2323 * fWatchSubTree [I] Flag for subkey notification
2324 * fdwNotifyFilter [I] Changes to be reported
2325 * hEvent [I] Handle of signaled event
2326 * fAsync [I] Flag for asynchronous reporting
2327 *
2328 * RETURNS
2329 * Success: ERROR_SUCCESS
2330 * Failure: nonzero error code from Winerror.h
2331 */
2332 LONG WINAPI RegNotifyChangeKeyValue( HKEY hkey, BOOL fWatchSubTree,
2333 DWORD fdwNotifyFilter, HANDLE hEvent,
2334 BOOL fAsync )
2335 {
2336 NTSTATUS status;
2337 IO_STATUS_BLOCK iosb;
2338
2339 hkey = get_special_root_hkey( hkey );
2340 if (!hkey) return ERROR_INVALID_HANDLE;
2341
2342 TRACE("(%p,%i,%ld,%p,%i)\n", hkey, fWatchSubTree, fdwNotifyFilter,
2343 hEvent, fAsync);
2344
2345 status = NtNotifyChangeKey( hkey, hEvent, NULL, NULL, &iosb,
2346 fdwNotifyFilter, fAsync, NULL, 0,
2347 fWatchSubTree);
2348
2349 if (status && status != STATUS_TIMEOUT)
2350 return RtlNtStatusToDosError( status );
2351
2352 return ERROR_SUCCESS;
2353 }
2354
2355 /******************************************************************************
2356 * RegOpenUserClassesRoot [ADVAPI32.@]
2357 *
2358 * Open the HKEY_CLASSES_ROOT key for a user.
2359 *
2360 * PARAMS
2361 * hToken [I] Handle of token representing the user
2362 * dwOptions [I] Reserved, nust be 0
2363 * samDesired [I] Desired access rights
2364 * phkResult [O] Destination for the resulting key handle
2365 *
2366 * RETURNS
2367 * Success: ERROR_SUCCESS
2368 * Failure: nonzero error code from Winerror.h
2369 *
2370 * NOTES
2371 * On Windows 2000 and upwards the HKEY_CLASSES_ROOT key is a view of the
2372 * "HKEY_LOCAL_MACHINE\Software\Classes" and the
2373 * "HKEY_CURRENT_USER\Software\Classes" keys merged together.
2374 */
2375 LONG WINAPI RegOpenUserClassesRoot(
2376 HANDLE hToken,
2377 DWORD dwOptions,
2378 REGSAM samDesired,
2379 PHKEY phkResult
2380 )
2381 {
2382 FIXME("(%p, 0x%lx, 0x%lx, %p) semi-stub\n", hToken, dwOptions, samDesired, phkResult);
2383
2384 *phkResult = HKEY_CLASSES_ROOT;
2385 return ERROR_SUCCESS;
2386 }
2387
2388 /******************************************************************************
2389 * load_string [Internal]
2390 *
2391 * This is basically a copy of user32/resource.c's LoadStringW. Necessary to
2392 * avoid importing user32, which is higher level than advapi32. Helper for
2393 * RegLoadMUIString.
2394 */
2395 static int load_string(HINSTANCE hModule, UINT resId, LPWSTR pwszBuffer, INT cMaxChars)
2396 {
2397 HGLOBAL hMemory;
2398 HRSRC hResource;
2399 WCHAR *pString;
2400 int idxString;
2401
2402 /* Negative values have to be inverted. */
2403 if (HIWORD(resId) == 0xffff)
2404 resId = (UINT)(-((INT)resId));
2405
2406 /* Load the resource into memory and get a pointer to it. */
2407 hResource = FindResourceW(hModule, MAKEINTRESOURCEW(LOWORD(resId >> 4) + 1), (LPWSTR)RT_STRING);
2408 if (!hResource) return 0;
2409 hMemory = LoadResource(hModule, hResource);
2410 if (!hMemory) return 0;
2411 pString = LockResource(hMemory);
2412
2413 /* Strings are length-prefixed. Lowest nibble of resId is an index. */
2414 idxString = resId & 0xf;
2415 while (idxString--) pString += *pString + 1;
2416
2417 /* If no buffer is given, return length of the string. */
2418 if (!pwszBuffer) return *pString;
2419
2420 /* Else copy over the string, respecting the buffer size. */
2421 cMaxChars = (*pString < cMaxChars) ? *pString : (cMaxChars - 1);
2422 if (cMaxChars >= 0) {
2423 memcpy(pwszBuffer, pString+1, cMaxChars * sizeof(WCHAR));
2424 pwszBuffer[cMaxChars] = '\0';
2425 }
2426
2427 return cMaxChars;
2428 }
2429
2430 /******************************************************************************
2431 * RegLoadMUIStringW [ADVAPI32.@]
2432 *
2433 * Load the localized version of a string resource from some PE, respective
2434 * id and path of which are given in the registry value in the format
2435 * @[path]\dllname,-resourceId
2436 *
2437 * PARAMS
2438 * hKey [I] Key, of which to load the string value from.
2439 * pszValue [I] The value to be loaded (Has to be of REG_EXPAND_SZ or REG_SZ type).
2440 * pszBuffer [O] Buffer to store the localized string in.
2441 * cbBuffer [I] Size of the destination buffer in bytes.
2442 * pcbData [O] Number of bytes written to pszBuffer (optional, may be NULL).
2443 * dwFlags [I] None supported yet.
2444 * pszBaseDir [I] Not supported yet.
2445 *
2446 * RETURNS
2447 * Success: ERROR_SUCCESS,
2448 * Failure: nonzero error code from winerror.h
2449 *
2450 * NOTES
2451 * This is an API of Windows Vista, which wasn't available at the time this code
2452 * was written. We have to check for the correct behaviour once it's available.
2453 */
2454 LONG WINAPI RegLoadMUIStringW(HKEY hKey, LPCWSTR pwszValue, LPWSTR pwszBuffer, DWORD cbBuffer,
2455 LPDWORD pcbData, DWORD dwFlags, LPCWSTR pwszBaseDir)
2456 {
2457 DWORD dwValueType, cbData;
2458 LPWSTR pwszTempBuffer = NULL, pwszExpandedBuffer = NULL;
2459 LONG result;
2460
2461 TRACE("(hKey = %p, pwszValue = %s, pwszBuffer = %p, cbBuffer = %ld, pcbData = %p, "
2462 "dwFlags = %ld, pwszBaseDir = %s) stub\n", hKey, debugstr_w(pwszValue), pwszBuffer,
2463 cbBuffer, pcbData, dwFlags, debugstr_w(pwszBaseDir));
2464
2465 /* Parameter sanity checks. */
2466 if (!hKey || !pwszBuffer)
2467 return ERROR_INVALID_PARAMETER;
2468
2469 if (pwszBaseDir && *pwszBaseDir) {
2470 FIXME("BaseDir parameter not yet supported!\n");
2471 return ERROR_INVALID_PARAMETER;
2472 }
2473
2474 /* Check for value existence and correctness of it's type, allocate a buffer and load it. */
2475 result = RegQueryValueExW(hKey, pwszValue, NULL, &dwValueType, NULL, &cbData);
2476 if (result != ERROR_SUCCESS) goto cleanup;
2477 if (!(dwValueType == REG_SZ || dwValueType == REG_EXPAND_SZ) || !cbData) {
2478 result = ERROR_FILE_NOT_FOUND;
2479 goto cleanup;
2480 }
2481 pwszTempBuffer = HeapAlloc(GetProcessHeap(), 0, cbData);
2482 if (!pwszTempBuffer) {
2483 result = ERROR_NOT_ENOUGH_MEMORY;
2484 goto cleanup;
2485 }
2486 result = RegQueryValueExW(hKey, pwszValue, NULL, &dwValueType, (LPBYTE)pwszTempBuffer, &cbData);
2487 if (result != ERROR_SUCCESS) goto cleanup;
2488
2489 /* Expand environment variables, if appropriate, or copy the original string over. */
2490 if (dwValueType == REG_EXPAND_SZ) {
2491 cbData = ExpandEnvironmentStringsW(pwszTempBuffer, NULL, 0) * sizeof(WCHAR);
2492 if (!cbData) goto cleanup;
2493 pwszExpandedBuffer = HeapAlloc(GetProcessHeap(), 0, cbData);
2494 if (!pwszExpandedBuffer) {
2495 result = ERROR_NOT_ENOUGH_MEMORY;
2496 goto cleanup;
2497 }
2498 ExpandEnvironmentStringsW(pwszTempBuffer, pwszExpandedBuffer, cbData);
2499 } else {
2500 pwszExpandedBuffer = HeapAlloc(GetProcessHeap(), 0, cbData);
2501 memcpy(pwszExpandedBuffer, pwszTempBuffer, cbData);
2502 }
2503
2504 /* If the value references a resource based string, parse the value and load the string.
2505 * Else just copy over the original value. */
2506 result = ERROR_SUCCESS;
2507 if (*pwszExpandedBuffer != '@') { /* '@' is the prefix for resource based string entries. */
2508 lstrcpynW(pwszBuffer, pwszExpandedBuffer, cbBuffer / sizeof(WCHAR));
2509 } else {
2510 WCHAR *pComma = strrchrW(pwszExpandedBuffer, ',');
2511 UINT uiStringId;
2512 HMODULE hModule;
2513
2514 /* Format of the expanded value is 'path_to_dll,-resId' */
2515 if (!pComma || pComma[1] != '-') {
2516 result = ERROR_BADKEY;
2517 goto cleanup;
2518 }
2519
2520 uiStringId = atoiW(pComma+2);
2521 *pComma = '\0';
2522
2523 hModule = LoadLibraryW(pwszExpandedBuffer + 1);
2524 if (!hModule || !load_string(hModule, uiStringId, pwszBuffer, cbBuffer/sizeof(WCHAR)))
2525 result = ERROR_BADKEY;
2526 FreeLibrary(hModule);
2527 }
2528
2529 cleanup:
2530 HeapFree(GetProcessHeap(), 0, pwszTempBuffer);
2531 HeapFree(GetProcessHeap(), 0, pwszExpandedBuffer);
2532 return result;
2533 }
2534
2535 /******************************************************************************
2536 * RegLoadMUIStringA [ADVAPI32.@]
2537 *
2538 * See RegLoadMUIStringW
2539 */
2540 LONG WINAPI RegLoadMUIStringA(HKEY hKey, LPCSTR pszValue, LPSTR pszBuffer, DWORD cbBuffer,
2541 LPDWORD pcbData, DWORD dwFlags, LPCSTR pszBaseDir)
2542 {
2543 UNICODE_STRING valueW, baseDirW;
2544 WCHAR *pwszBuffer;
2545 DWORD cbData = cbBuffer * sizeof(WCHAR);
2546 LONG result;
2547
2548 valueW.Buffer = baseDirW.Buffer = pwszBuffer = NULL;
2549 if (!RtlCreateUnicodeStringFromAsciiz(&valueW, pszValue) ||
2550 !RtlCreateUnicodeStringFromAsciiz(&baseDirW, pszBaseDir) ||
2551 !(pwszBuffer = HeapAlloc(GetProcessHeap(), 0, cbData)))
2552 {
2553 result = ERROR_NOT_ENOUGH_MEMORY;
2554 goto cleanup;
2555 }
2556
2557 result = RegLoadMUIStringW(hKey, valueW.Buffer, pwszBuffer, cbData, NULL, dwFlags,
2558 baseDirW.Buffer);
2559
2560 if (result == ERROR_SUCCESS) {
2561 cbData = WideCharToMultiByte(CP_ACP, 0, pwszBuffer, -1, pszBuffer, cbBuffer, NULL, NULL);
2562 if (pcbData)
2563 *pcbData = cbData;
2564 }
2565
2566 cleanup:
2567 HeapFree(GetProcessHeap(), 0, pwszBuffer);
2568 RtlFreeUnicodeString(&baseDirW);
2569 RtlFreeUnicodeString(&valueW);
2570
2571 return result;
2572 }
2573
2574 /******************************************************************************
2575 * RegDisablePredefinedCache [ADVAPI32.@]
2576 *
2577 * Disables the caching of the HKEY_CLASSES_ROOT key for the process.
2578 *
2579 * PARAMS
2580 * None.
2581 *
2582 * RETURNS
2583 * Success: ERROR_SUCCESS
2584 * Failure: nonzero error code from Winerror.h
2585 *
2586 * NOTES
2587 * This is useful for services that use impersonation.
2588 */
2589 LONG WINAPI RegDisablePredefinedCache(void)
2590 {
2591 HKEY hkey_current_user;
2592 int idx = (UINT_PTR)HKEY_CURRENT_USER - (UINT_PTR)HKEY_SPECIAL_ROOT_FIRST;
2593
2594 /* prevent caching of future requests */
2595 hkcu_cache_disabled = TRUE;
2596
2597 hkey_current_user = InterlockedExchangePointer( (void **)&special_root_keys[idx], NULL );
2598
2599 if (hkey_current_user)
2600 NtClose( hkey_current_user );
2601
2602 return ERROR_SUCCESS;
2603 }