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 }