crypt32/tests: Add a trailing '\n' to ok() calls.
[wine] / dlls / version / info.c
1 /*
2  * Implementation of VERSION.DLL - Version Info access
3  *
4  * Copyright 1996,1997 Marcus Meissner
5  * Copyright 1997 David Cuthbert
6  * Copyright 1999 Ulrich Weigand
7  * Copyright 2005 Paul Vriens
8  *
9  * This library is free software; you can redistribute it and/or
10  * modify it under the terms of the GNU Lesser General Public
11  * License as published by the Free Software Foundation; either
12  * version 2.1 of the License, or (at your option) any later version.
13  *
14  * This library is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
17  * Lesser General Public License for more details.
18  *
19  * You should have received a copy of the GNU Lesser General Public
20  * License along with this library; if not, write to the Free Software
21  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
22  *
23  */
24
25 #include <stdarg.h>
26 #include <stdlib.h>
27 #include <string.h>
28
29 #include "windef.h"
30 #include "winbase.h"
31 #include "winver.h"
32 #include "winuser.h"
33 #include "winternl.h"
34 #include "lzexpand.h"
35 #include "wine/unicode.h"
36 #include "winerror.h"
37 #include "wine/debug.h"
38
39 WINE_DEFAULT_DEBUG_CHANNEL(ver);
40
41 extern DWORD find_version_resource( HFILE lzfd, DWORD *reslen, DWORD *offset );
42
43 /******************************************************************************
44  *
45  *   This function will print via standard TRACE, debug info regarding
46  *   the file info structure vffi.
47  *      15-Feb-1998 Dimitrie Paun (dimi@cs.toronto.edu)
48  *      Added this function to clean up the code.
49  *
50  *****************************************************************************/
51 static void print_vffi_debug(const VS_FIXEDFILEINFO *vffi)
52 {
53     BOOL    versioned_printer = FALSE;
54
55     if((vffi->dwFileType == VFT_DLL) || (vffi->dwFileType == VFT_DRV))
56     {
57         if(vffi->dwFileSubtype == VFT2_DRV_VERSIONED_PRINTER)
58             /* this is documented for newer w2k Drivers and up */
59             versioned_printer = TRUE;
60         else if( (vffi->dwFileSubtype == VFT2_DRV_PRINTER) &&
61                  (vffi->dwFileVersionMS != vffi->dwProductVersionMS) &&
62                  (vffi->dwFileVersionMS > 0) &&
63                  (vffi->dwFileVersionMS <= 3) )
64             /* found this on NT 3.51, NT4.0 and old w2k Drivers */
65             versioned_printer = TRUE;
66     }
67
68     TRACE("structversion=%u.%u, ",
69             HIWORD(vffi->dwStrucVersion),LOWORD(vffi->dwStrucVersion));
70     if(versioned_printer)
71     {
72         WORD mode = LOWORD(vffi->dwFileVersionMS);
73         WORD ver_rev = HIWORD(vffi->dwFileVersionLS);
74         TRACE("fileversion=%u.%u.%u.%u (%s.major.minor.release), ",
75             (vffi->dwFileVersionMS),
76             HIBYTE(ver_rev), LOBYTE(ver_rev), LOWORD(vffi->dwFileVersionLS),
77             (mode == 3) ? "Usermode" : ((mode <= 2) ? "Kernelmode" : "?") );
78     }
79     else
80     {
81         TRACE("fileversion=%u.%u.%u.%u, ",
82             HIWORD(vffi->dwFileVersionMS),LOWORD(vffi->dwFileVersionMS),
83             HIWORD(vffi->dwFileVersionLS),LOWORD(vffi->dwFileVersionLS));
84     }
85     TRACE("productversion=%u.%u.%u.%u\n",
86           HIWORD(vffi->dwProductVersionMS),LOWORD(vffi->dwProductVersionMS),
87           HIWORD(vffi->dwProductVersionLS),LOWORD(vffi->dwProductVersionLS));
88
89     TRACE("flagmask=0x%x, flags=0x%x %s%s%s%s%s%s\n",
90           vffi->dwFileFlagsMask, vffi->dwFileFlags,
91           (vffi->dwFileFlags & VS_FF_DEBUG) ? "DEBUG," : "",
92           (vffi->dwFileFlags & VS_FF_PRERELEASE) ? "PRERELEASE," : "",
93           (vffi->dwFileFlags & VS_FF_PATCHED) ? "PATCHED," : "",
94           (vffi->dwFileFlags & VS_FF_PRIVATEBUILD) ? "PRIVATEBUILD," : "",
95           (vffi->dwFileFlags & VS_FF_INFOINFERRED) ? "INFOINFERRED," : "",
96           (vffi->dwFileFlags & VS_FF_SPECIALBUILD) ? "SPECIALBUILD," : "");
97
98     TRACE("(");
99
100     TRACE("OS=0x%x.0x%x ", HIWORD(vffi->dwFileOS), LOWORD(vffi->dwFileOS));
101
102     switch (vffi->dwFileOS&0xFFFF0000)
103     {
104     case VOS_DOS:TRACE("DOS,");break;
105     case VOS_OS216:TRACE("OS/2-16,");break;
106     case VOS_OS232:TRACE("OS/2-32,");break;
107     case VOS_NT:TRACE("NT,");break;
108     case VOS_UNKNOWN:
109     default:
110         TRACE("UNKNOWN(0x%x),",vffi->dwFileOS&0xFFFF0000);break;
111     }
112
113     switch (LOWORD(vffi->dwFileOS))
114     {
115     case VOS__BASE:TRACE("BASE");break;
116     case VOS__WINDOWS16:TRACE("WIN16");break;
117     case VOS__WINDOWS32:TRACE("WIN32");break;
118     case VOS__PM16:TRACE("PM16");break;
119     case VOS__PM32:TRACE("PM32");break;
120     default:
121         TRACE("UNKNOWN(0x%x)",LOWORD(vffi->dwFileOS));break;
122     }
123
124     TRACE(")\n");
125
126     switch (vffi->dwFileType)
127     {
128     case VFT_APP:TRACE("filetype=APP");break;
129     case VFT_DLL:
130         TRACE("filetype=DLL");
131         if(vffi->dwFileSubtype != 0)
132         {
133             if(versioned_printer) /* NT3.x/NT4.0 or old w2k Driver  */
134                 TRACE(",PRINTER");
135             TRACE(" (subtype=0x%x)", vffi->dwFileSubtype);
136         }
137         break;
138     case VFT_DRV:
139         TRACE("filetype=DRV,");
140         switch(vffi->dwFileSubtype)
141         {
142         case VFT2_DRV_PRINTER:TRACE("PRINTER");break;
143         case VFT2_DRV_KEYBOARD:TRACE("KEYBOARD");break;
144         case VFT2_DRV_LANGUAGE:TRACE("LANGUAGE");break;
145         case VFT2_DRV_DISPLAY:TRACE("DISPLAY");break;
146         case VFT2_DRV_MOUSE:TRACE("MOUSE");break;
147         case VFT2_DRV_NETWORK:TRACE("NETWORK");break;
148         case VFT2_DRV_SYSTEM:TRACE("SYSTEM");break;
149         case VFT2_DRV_INSTALLABLE:TRACE("INSTALLABLE");break;
150         case VFT2_DRV_SOUND:TRACE("SOUND");break;
151         case VFT2_DRV_COMM:TRACE("COMM");break;
152         case VFT2_DRV_INPUTMETHOD:TRACE("INPUTMETHOD");break;
153         case VFT2_DRV_VERSIONED_PRINTER:TRACE("VERSIONED_PRINTER");break;
154         case VFT2_UNKNOWN:
155         default:
156             TRACE("UNKNOWN(0x%x)",vffi->dwFileSubtype);break;
157         }
158         break;
159     case VFT_FONT:
160         TRACE("filetype=FONT,");
161         switch (vffi->dwFileSubtype)
162         {
163         case VFT2_FONT_RASTER:TRACE("RASTER");break;
164         case VFT2_FONT_VECTOR:TRACE("VECTOR");break;
165         case VFT2_FONT_TRUETYPE:TRACE("TRUETYPE");break;
166         default:TRACE("UNKNOWN(0x%x)",vffi->dwFileSubtype);break;
167         }
168         break;
169     case VFT_VXD:TRACE("filetype=VXD");break;
170     case VFT_STATIC_LIB:TRACE("filetype=STATIC_LIB");break;
171     case VFT_UNKNOWN:
172     default:
173         TRACE("filetype=Unknown(0x%x)",vffi->dwFileType);break;
174     }
175
176     TRACE("\n");
177     TRACE("filedate=0x%x.0x%x\n",vffi->dwFileDateMS,vffi->dwFileDateLS);
178 }
179
180 /***********************************************************************
181  * Version Info Structure
182  */
183
184 typedef struct
185 {
186     WORD  wLength;
187     WORD  wValueLength;
188     CHAR  szKey[1];
189 #if 0   /* variable length structure */
190     /* DWORD aligned */
191     BYTE  Value[];
192     /* DWORD aligned */
193     VS_VERSION_INFO_STRUCT16 Children[];
194 #endif
195 } VS_VERSION_INFO_STRUCT16;
196
197 typedef struct
198 {
199     WORD  wLength;
200     WORD  wValueLength;
201     WORD  wType;
202     WCHAR szKey[1];
203 #if 0   /* variable length structure */
204     /* DWORD aligned */
205     BYTE  Value[];
206     /* DWORD aligned */
207     VS_VERSION_INFO_STRUCT32 Children[];
208 #endif
209 } VS_VERSION_INFO_STRUCT32;
210
211 #define VersionInfoIs16( ver ) \
212     ( ((const VS_VERSION_INFO_STRUCT16 *)ver)->szKey[0] >= ' ' )
213
214 #define DWORD_ALIGN( base, ptr ) \
215     ( (LPBYTE)(base) + ((((LPBYTE)(ptr) - (LPBYTE)(base)) + 3) & ~3) )
216
217 #define VersionInfo16_Value( ver )  \
218     DWORD_ALIGN( (ver), (ver)->szKey + strlen((ver)->szKey) + 1 )
219 #define VersionInfo32_Value( ver )  \
220     DWORD_ALIGN( (ver), (ver)->szKey + strlenW((ver)->szKey) + 1 )
221
222 #define VersionInfo16_Children( ver )  \
223     (const VS_VERSION_INFO_STRUCT16 *)( VersionInfo16_Value( ver ) + \
224                            ( ( (ver)->wValueLength + 3 ) & ~3 ) )
225 #define VersionInfo32_Children( ver )  \
226     (const VS_VERSION_INFO_STRUCT32 *)( VersionInfo32_Value( ver ) + \
227                            ( ( (ver)->wValueLength * \
228                                ((ver)->wType? 2 : 1) + 3 ) & ~3 ) )
229
230 #define VersionInfo16_Next( ver ) \
231     (VS_VERSION_INFO_STRUCT16 *)( (LPBYTE)ver + (((ver)->wLength + 3) & ~3) )
232 #define VersionInfo32_Next( ver ) \
233     (VS_VERSION_INFO_STRUCT32 *)( (LPBYTE)ver + (((ver)->wLength + 3) & ~3) )
234
235
236 /***********************************************************************
237  *           GetFileVersionInfoSizeW         [VERSION.@]
238  */
239 DWORD WINAPI GetFileVersionInfoSizeW( LPCWSTR filename, LPDWORD handle )
240 {
241     DWORD len, offset, magic = 1;
242     HFILE lzfd;
243     HMODULE hModule;
244     OFSTRUCT ofs;
245
246     TRACE("(%s,%p)\n", debugstr_w(filename), handle );
247
248     if (handle) *handle = 0;
249
250     if (!filename)
251     {
252         SetLastError(ERROR_INVALID_PARAMETER);
253         return 0;
254     }
255     if (!*filename)
256     {
257         SetLastError(ERROR_BAD_PATHNAME);
258         return 0;
259     }
260
261     if ((lzfd = LZOpenFileW( (LPWSTR)filename, &ofs, OF_READ )) != HFILE_ERROR)
262     {
263         magic = find_version_resource( lzfd, &len, &offset );
264         LZClose( lzfd );
265     }
266
267     if ((magic == 1) && (hModule = LoadLibraryExW( filename, 0, LOAD_LIBRARY_AS_DATAFILE )))
268     {
269         HRSRC hRsrc = FindResourceW( hModule, MAKEINTRESOURCEW(VS_VERSION_INFO),
270                                      MAKEINTRESOURCEW(VS_FILE_INFO) );
271         if (hRsrc)
272         {
273             magic = IMAGE_NT_SIGNATURE;
274             len = SizeofResource( hModule, hRsrc );
275         }
276         FreeLibrary( hModule );
277     }
278
279     switch (magic)
280     {
281     case IMAGE_OS2_SIGNATURE:
282         /* We have a 16bit resource.
283          *
284          * XP/W2K/W2K3 uses a buffer which is more than the actual needed space:
285          *
286          * (info->wLength - sizeof(VS_FIXEDFILEINFO)) * 4
287          *
288          * This extra buffer is used for ANSI to Unicode conversions in W-Calls.
289          * info->wLength should be the same as len. Currently it isn't but that
290          * doesn't seem to be a problem (len is bigger than info->wLength).
291          */
292         SetLastError(0);
293         return (len - sizeof(VS_FIXEDFILEINFO)) * 4;
294
295     case IMAGE_NT_SIGNATURE:
296         /* We have a 32bit resource.
297          *
298          * XP/W2K/W2K3 uses a buffer which is 2 times the actual needed space + 4 bytes "FE2X"
299          * This extra buffer is used for Unicode to ANSI conversions in A-Calls
300          */
301         SetLastError(0);
302         return (len * 2) + 4;
303
304     default:
305         SetLastError( lzfd == HFILE_ERROR ? ofs.nErrCode : ERROR_RESOURCE_DATA_NOT_FOUND );
306         return 0;
307     }
308 }
309
310 /***********************************************************************
311  *           GetFileVersionInfoSizeA         [VERSION.@]
312  */
313 DWORD WINAPI GetFileVersionInfoSizeA( LPCSTR filename, LPDWORD handle )
314 {
315     UNICODE_STRING filenameW;
316     DWORD retval;
317
318     TRACE("(%s,%p)\n", debugstr_a(filename), handle );
319
320     if(filename)
321         RtlCreateUnicodeStringFromAsciiz(&filenameW, filename);
322     else
323         filenameW.Buffer = NULL;
324
325     retval = GetFileVersionInfoSizeW(filenameW.Buffer, handle);
326
327     RtlFreeUnicodeString(&filenameW);
328
329     return retval;
330 }
331
332 /***********************************************************************
333  *           GetFileVersionInfoW             [VERSION.@]
334  */
335 BOOL WINAPI GetFileVersionInfoW( LPCWSTR filename, DWORD handle,
336                                     DWORD datasize, LPVOID data )
337 {
338     static const char signature[4] = "FE2X";
339     DWORD len, offset, magic = 1;
340     HFILE lzfd;
341     OFSTRUCT ofs;
342     HMODULE hModule;
343     VS_VERSION_INFO_STRUCT32* vvis = data;
344
345     TRACE("(%s,%d,size=%d,data=%p)\n",
346                 debugstr_w(filename), handle, datasize, data );
347
348     if (!data)
349     {
350         SetLastError(ERROR_INVALID_DATA);
351         return FALSE;
352     }
353
354     if ((lzfd = LZOpenFileW( (LPWSTR)filename, &ofs, OF_READ )) != HFILE_ERROR)
355     {
356         if ((magic = find_version_resource( lzfd, &len, &offset )) > 1)
357         {
358             LZSeek( lzfd, offset, 0 /* SEEK_SET */ );
359             len = LZRead( lzfd, data, min( len, datasize ) );
360         }
361         LZClose( lzfd );
362     }
363
364     if ((magic == 1) && (hModule = LoadLibraryExW( filename, 0, LOAD_LIBRARY_AS_DATAFILE )))
365     {
366         HRSRC hRsrc = FindResourceW( hModule, MAKEINTRESOURCEW(VS_VERSION_INFO),
367                                      MAKEINTRESOURCEW(VS_FILE_INFO) );
368         if (hRsrc)
369         {
370             HGLOBAL hMem = LoadResource( hModule, hRsrc );
371             magic = IMAGE_NT_SIGNATURE;
372             len = min( SizeofResource(hModule, hRsrc), datasize );
373             memcpy( data, LockResource( hMem ), len );
374             FreeResource( hMem );
375         }
376         FreeLibrary( hModule );
377     }
378
379     switch (magic)
380     {
381     case IMAGE_OS2_SIGNATURE:
382         /* We have a 16bit resource. */
383         if (TRACE_ON(ver))
384             print_vffi_debug( (VS_FIXEDFILEINFO *)VersionInfo16_Value( (VS_VERSION_INFO_STRUCT16 *)data ));
385         SetLastError(0);
386         return TRUE;
387
388     case IMAGE_NT_SIGNATURE:
389         /* We have a 32bit resource.
390          *
391          * XP/W2K/W2K3 uses a buffer which is 2 times the actual needed space + 4 bytes "FE2X"
392          * This extra buffer is used for Unicode to ANSI conversions in A-Calls
393          */
394         len = vvis->wLength + sizeof(signature);
395         if (datasize >= len) memcpy( (char*)data + vvis->wLength, signature, sizeof(signature) );
396         if (TRACE_ON(ver))
397             print_vffi_debug( (VS_FIXEDFILEINFO *)VersionInfo32_Value( vvis ));
398         SetLastError(0);
399         return TRUE;
400
401     default:
402         SetLastError( lzfd == HFILE_ERROR ? ofs.nErrCode : ERROR_RESOURCE_DATA_NOT_FOUND );
403         return FALSE;
404     }
405 }
406
407 /***********************************************************************
408  *           GetFileVersionInfoA             [VERSION.@]
409  */
410 BOOL WINAPI GetFileVersionInfoA( LPCSTR filename, DWORD handle,
411                                     DWORD datasize, LPVOID data )
412 {
413     UNICODE_STRING filenameW;
414     BOOL retval;
415
416     TRACE("(%s,%d,size=%d,data=%p)\n",
417                 debugstr_a(filename), handle, datasize, data );
418
419     if(filename)
420         RtlCreateUnicodeStringFromAsciiz(&filenameW, filename);
421     else
422         filenameW.Buffer = NULL;
423
424     retval = GetFileVersionInfoW(filenameW.Buffer, handle, datasize, data);
425
426     RtlFreeUnicodeString(&filenameW);
427
428     return retval;
429 }
430
431 /***********************************************************************
432  *           VersionInfo16_FindChild             [internal]
433  */
434 static const VS_VERSION_INFO_STRUCT16 *VersionInfo16_FindChild( const VS_VERSION_INFO_STRUCT16 *info,
435                                             LPCSTR szKey, UINT cbKey )
436 {
437     const VS_VERSION_INFO_STRUCT16 *child = VersionInfo16_Children( info );
438
439     while ((char *)child < (char *)info + info->wLength )
440     {
441         if (!strncasecmp( child->szKey, szKey, cbKey ) && !child->szKey[cbKey])
442             return child;
443
444         if (!(child->wLength)) return NULL;
445         child = VersionInfo16_Next( child );
446     }
447
448     return NULL;
449 }
450
451 /***********************************************************************
452  *           VersionInfo32_FindChild             [internal]
453  */
454 static const VS_VERSION_INFO_STRUCT32 *VersionInfo32_FindChild( const VS_VERSION_INFO_STRUCT32 *info,
455                                             LPCWSTR szKey, UINT cbKey )
456 {
457     const VS_VERSION_INFO_STRUCT32 *child = VersionInfo32_Children( info );
458
459     while ((char *)child < (char *)info + info->wLength )
460     {
461         if (!strncmpiW( child->szKey, szKey, cbKey ) && !child->szKey[cbKey])
462             return child;
463
464         if (!(child->wLength)) return NULL;
465         child = VersionInfo32_Next( child );
466     }
467
468     return NULL;
469 }
470
471 /***********************************************************************
472  *           VersionInfo16_QueryValue              [internal]
473  *
474  *    Gets a value from a 16-bit NE resource
475  */
476 static BOOL VersionInfo16_QueryValue( const VS_VERSION_INFO_STRUCT16 *info, LPCSTR lpSubBlock,
477                                LPVOID *lplpBuffer, UINT *puLen )
478 {
479     while ( *lpSubBlock )
480     {
481         /* Find next path component */
482         LPCSTR lpNextSlash;
483         for ( lpNextSlash = lpSubBlock; *lpNextSlash; lpNextSlash++ )
484             if ( *lpNextSlash == '\\' )
485                 break;
486
487         /* Skip empty components */
488         if ( lpNextSlash == lpSubBlock )
489         {
490             lpSubBlock++;
491             continue;
492         }
493
494         /* We have a non-empty component: search info for key */
495         info = VersionInfo16_FindChild( info, lpSubBlock, lpNextSlash-lpSubBlock );
496         if ( !info )
497         {
498             if (puLen) *puLen = 0 ;
499             SetLastError( ERROR_RESOURCE_TYPE_NOT_FOUND );
500             return FALSE;
501         }
502
503         /* Skip path component */
504         lpSubBlock = lpNextSlash;
505     }
506
507     /* Return value */
508     *lplpBuffer = VersionInfo16_Value( info );
509     if (puLen)
510         *puLen = info->wValueLength;
511
512     return TRUE;
513 }
514
515 /***********************************************************************
516  *           VersionInfo32_QueryValue              [internal]
517  *
518  *    Gets a value from a 32-bit PE resource
519  */
520 static BOOL VersionInfo32_QueryValue( const VS_VERSION_INFO_STRUCT32 *info, LPCWSTR lpSubBlock,
521                                LPVOID *lplpBuffer, UINT *puLen )
522 {
523     TRACE("lpSubBlock : (%s)\n", debugstr_w(lpSubBlock));
524
525     while ( *lpSubBlock )
526     {
527         /* Find next path component */
528         LPCWSTR lpNextSlash;
529         for ( lpNextSlash = lpSubBlock; *lpNextSlash; lpNextSlash++ )
530             if ( *lpNextSlash == '\\' )
531                 break;
532
533         /* Skip empty components */
534         if ( lpNextSlash == lpSubBlock )
535         {
536             lpSubBlock++;
537             continue;
538         }
539
540         /* We have a non-empty component: search info for key */
541         info = VersionInfo32_FindChild( info, lpSubBlock, lpNextSlash-lpSubBlock );
542         if ( !info )
543         {
544             if (puLen) *puLen = 0 ;
545             SetLastError( ERROR_RESOURCE_TYPE_NOT_FOUND );
546             return FALSE;
547         }
548
549         /* Skip path component */
550         lpSubBlock = lpNextSlash;
551     }
552
553     /* Return value */
554     *lplpBuffer = VersionInfo32_Value( info );
555     if (puLen)
556         *puLen = info->wValueLength;
557
558     return TRUE;
559 }
560
561 /***********************************************************************
562  *           VerQueryValueA              [VERSION.@]
563  */
564 BOOL WINAPI VerQueryValueA( LPCVOID pBlock, LPCSTR lpSubBlock,
565                                LPVOID *lplpBuffer, PUINT puLen )
566 {
567     static const char rootA[] = "\\";
568     static const char varfileinfoA[] = "\\VarFileInfo\\Translation";
569     const VS_VERSION_INFO_STRUCT16 *info = pBlock;
570
571     TRACE("(%p,%s,%p,%p)\n",
572                 pBlock, debugstr_a(lpSubBlock), lplpBuffer, puLen );
573
574      if (!pBlock)
575         return FALSE;
576
577     if (lpSubBlock == NULL || lpSubBlock[0] == '\0')
578         lpSubBlock = rootA;
579
580     if ( !VersionInfoIs16( info ) )
581     {
582         BOOL ret;
583         INT len;
584         LPWSTR lpSubBlockW;
585
586         len  = MultiByteToWideChar(CP_ACP, 0, lpSubBlock, -1, NULL, 0);
587         lpSubBlockW = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR));
588
589         if (!lpSubBlockW)
590             return FALSE;
591
592         MultiByteToWideChar(CP_ACP, 0, lpSubBlock, -1, lpSubBlockW, len);
593
594         ret = VersionInfo32_QueryValue(pBlock, lpSubBlockW, lplpBuffer, puLen);
595
596         HeapFree(GetProcessHeap(), 0, lpSubBlockW);
597
598         if (ret && strcasecmp( lpSubBlock, rootA ) && strcasecmp( lpSubBlock, varfileinfoA ))
599         {
600             /* Set lpBuffer so it points to the 'empty' area where we store
601              * the converted strings
602              */
603             LPSTR lpBufferA = (LPSTR)pBlock + info->wLength + 4;
604             DWORD pos = (LPCSTR)*lplpBuffer - (LPCSTR)pBlock;
605
606             len = WideCharToMultiByte(CP_ACP, 0, *lplpBuffer, -1,
607                                       lpBufferA + pos, info->wLength - pos, NULL, NULL);
608             *lplpBuffer = lpBufferA + pos;
609             *puLen = len;
610         }
611         return ret;
612     }
613
614     return VersionInfo16_QueryValue(info, lpSubBlock, lplpBuffer, puLen);
615 }
616
617 /***********************************************************************
618  *           VerQueryValueW              [VERSION.@]
619  */
620 BOOL WINAPI VerQueryValueW( LPCVOID pBlock, LPCWSTR lpSubBlock,
621                                LPVOID *lplpBuffer, PUINT puLen )
622 {
623     static const WCHAR nullW[] = { 0 };
624     static const WCHAR rootW[] = { '\\', 0 };
625     static const WCHAR varfileinfoW[] = { '\\','V','a','r','F','i','l','e','I','n','f','o',
626                                           '\\','T','r','a','n','s','l','a','t','i','o','n', 0 };
627
628     const VS_VERSION_INFO_STRUCT32 *info = pBlock;
629
630     TRACE("(%p,%s,%p,%p)\n",
631                 pBlock, debugstr_w(lpSubBlock), lplpBuffer, puLen );
632
633     if (!pBlock)
634         return FALSE;
635
636     if (lpSubBlock == NULL || lpSubBlock[0] == nullW[0])
637         lpSubBlock = rootW;
638
639     if ( VersionInfoIs16( info ) )
640     {
641         BOOL ret;
642         int len;
643         LPSTR lpSubBlockA;
644
645         len = WideCharToMultiByte(CP_ACP, 0, lpSubBlock, -1, NULL, 0, NULL, NULL);
646         lpSubBlockA = HeapAlloc(GetProcessHeap(), 0, len * sizeof(char));
647
648         if (!lpSubBlockA)
649             return FALSE;
650
651         WideCharToMultiByte(CP_ACP, 0, lpSubBlock, -1, lpSubBlockA, len, NULL, NULL);
652
653         ret = VersionInfo16_QueryValue(pBlock, lpSubBlockA, lplpBuffer, puLen);
654
655         HeapFree(GetProcessHeap(), 0, lpSubBlockA);
656
657         if (ret && strcmpiW( lpSubBlock, rootW ) && strcmpiW( lpSubBlock, varfileinfoW ))
658         {
659             /* Set lpBuffer so it points to the 'empty' area where we store
660              * the converted strings
661              */
662             LPWSTR lpBufferW = (LPWSTR)((LPSTR)pBlock + info->wLength);
663             DWORD pos = (LPCSTR)*lplpBuffer - (LPCSTR)pBlock;
664             DWORD max = (info->wLength - sizeof(VS_FIXEDFILEINFO)) * 4 - info->wLength;
665
666             len = MultiByteToWideChar(CP_ACP, 0, *lplpBuffer, -1,
667                                       lpBufferW + pos, max/sizeof(WCHAR) - pos );
668             *lplpBuffer = lpBufferW + pos;
669             *puLen = len;
670         }
671         return ret;
672     }
673
674     return VersionInfo32_QueryValue(info, lpSubBlock, lplpBuffer, puLen);
675 }