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 "winternl.h"
  33 #include "wine/winuser16.h"
  34 #include "wine/unicode.h"
  35 #include "winerror.h"
  36 #include "wine/debug.h"
  37
  38 WINE_DEFAULT_DEBUG_CHANNEL(ver);
  39
  40 /******************************************************************************
  41  *
  42  *   This function will print via standard TRACE, debug info regarding
  43  *   the file info structure vffi.
  44  *      15-Feb-1998 Dimitrie Paun (dimi@cs.toronto.edu)
  45  *      Added this function to clean up the code.
  46  *
  47  *****************************************************************************/
  48 static void print_vffi_debug(const VS_FIXEDFILEINFO *vffi)
  49 {
  50     BOOL    versioned_printer = FALSE;
  51
  52     if((vffi->dwFileType == VFT_DLL) || (vffi->dwFileType == VFT_DRV))
  53     {
  54         if(vffi->dwFileSubtype == VFT2_DRV_VERSIONED_PRINTER)
  55             /* this is documented for newer w2k Drivers and up */
  56             versioned_printer = TRUE;
  57         else if( (vffi->dwFileSubtype == VFT2_DRV_PRINTER) &&
  58                  (vffi->dwFileVersionMS != vffi->dwProductVersionMS) &&
  59                  (vffi->dwFileVersionMS > 0) &&
  60                  (vffi->dwFileVersionMS <= 3) )
  61             /* found this on NT 3.51, NT4.0 and old w2k Drivers */
  62             versioned_printer = TRUE;
  63     }
  64
  65     TRACE("structversion=%u.%u, ",
  66             HIWORD(vffi->dwStrucVersion),LOWORD(vffi->dwStrucVersion));
  67     if(versioned_printer)
  68     {
  69         WORD mode = LOWORD(vffi->dwFileVersionMS);
  70         WORD ver_rev = HIWORD(vffi->dwFileVersionLS);
  71         TRACE("fileversion=%u.%u.%u.%u (%s.major.minor.release), ",
  72             (vffi->dwFileVersionMS),
  73             HIBYTE(ver_rev), LOBYTE(ver_rev), LOWORD(vffi->dwFileVersionLS),
  74             (mode == 3) ? "Usermode" : ((mode <= 2) ? "Kernelmode" : "?") );
  75     }
  76     else
  77     {
  78         TRACE("fileversion=%u.%u.%u.%u, ",
  79             HIWORD(vffi->dwFileVersionMS),LOWORD(vffi->dwFileVersionMS),
  80             HIWORD(vffi->dwFileVersionLS),LOWORD(vffi->dwFileVersionLS));
  81     }
  82     TRACE("productversion=%u.%u.%u.%u\n",
  83           HIWORD(vffi->dwProductVersionMS),LOWORD(vffi->dwProductVersionMS),
  84           HIWORD(vffi->dwProductVersionLS),LOWORD(vffi->dwProductVersionLS));
  85
  86     TRACE("flagmask=0x%x, flags=0x%x %s%s%s%s%s%s\n",
  87           vffi->dwFileFlagsMask, vffi->dwFileFlags,
  88           (vffi->dwFileFlags & VS_FF_DEBUG) ? "DEBUG," : "",
  89           (vffi->dwFileFlags & VS_FF_PRERELEASE) ? "PRERELEASE," : "",
  90           (vffi->dwFileFlags & VS_FF_PATCHED) ? "PATCHED," : "",
  91           (vffi->dwFileFlags & VS_FF_PRIVATEBUILD) ? "PRIVATEBUILD," : "",
  92           (vffi->dwFileFlags & VS_FF_INFOINFERRED) ? "INFOINFERRED," : "",
  93           (vffi->dwFileFlags & VS_FF_SPECIALBUILD) ? "SPECIALBUILD," : "");
  94
  95     TRACE("(");
  96
  97     TRACE("OS=0x%x.0x%x ", HIWORD(vffi->dwFileOS), LOWORD(vffi->dwFileOS));
  98
  99     switch (vffi->dwFileOS&0xFFFF0000)
 100     {
 101     case VOS_DOS:TRACE("DOS,");break;
 102     case VOS_OS216:TRACE("OS/2-16,");break;
 103     case VOS_OS232:TRACE("OS/2-32,");break;
 104     case VOS_NT:TRACE("NT,");break;
 105     case VOS_UNKNOWN:
 106     default:
 107         TRACE("UNKNOWN(0x%x),",vffi->dwFileOS&0xFFFF0000);break;
 108     }
 109
 110     switch (LOWORD(vffi->dwFileOS))
 111     {
 112     case VOS__BASE:TRACE("BASE");break;
 113     case VOS__WINDOWS16:TRACE("WIN16");break;
 114     case VOS__WINDOWS32:TRACE("WIN32");break;
 115     case VOS__PM16:TRACE("PM16");break;
 116     case VOS__PM32:TRACE("PM32");break;
 117     default:
 118         TRACE("UNKNOWN(0x%x)",LOWORD(vffi->dwFileOS));break;
 119     }
 120
 121     TRACE(")\n");
 122
 123     switch (vffi->dwFileType)
 124     {
 125     case VFT_APP:TRACE("filetype=APP");break;
 126     case VFT_DLL:
 127         TRACE("filetype=DLL");
 128         if(vffi->dwFileSubtype != 0)
 129         {
 130             if(versioned_printer) /* NT3.x/NT4.0 or old w2k Driver  */
 131                 TRACE(",PRINTER");
 132             TRACE(" (subtype=0x%x)", vffi->dwFileSubtype);
 133         }
 134         break;
 135     case VFT_DRV:
 136         TRACE("filetype=DRV,");
 137         switch(vffi->dwFileSubtype)
 138         {
 139         case VFT2_DRV_PRINTER:TRACE("PRINTER");break;
 140         case VFT2_DRV_KEYBOARD:TRACE("KEYBOARD");break;
 141         case VFT2_DRV_LANGUAGE:TRACE("LANGUAGE");break;
 142         case VFT2_DRV_DISPLAY:TRACE("DISPLAY");break;
 143         case VFT2_DRV_MOUSE:TRACE("MOUSE");break;
 144         case VFT2_DRV_NETWORK:TRACE("NETWORK");break;
 145         case VFT2_DRV_SYSTEM:TRACE("SYSTEM");break;
 146         case VFT2_DRV_INSTALLABLE:TRACE("INSTALLABLE");break;
 147         case VFT2_DRV_SOUND:TRACE("SOUND");break;
 148         case VFT2_DRV_COMM:TRACE("COMM");break;
 149         case VFT2_DRV_INPUTMETHOD:TRACE("INPUTMETHOD");break;
 150         case VFT2_DRV_VERSIONED_PRINTER:TRACE("VERSIONED_PRINTER");break;
 151         case VFT2_UNKNOWN:
 152         default:
 153             TRACE("UNKNOWN(0x%x)",vffi->dwFileSubtype);break;
 154         }
 155         break;
 156     case VFT_FONT:
 157         TRACE("filetype=FONT,");
 158         switch (vffi->dwFileSubtype)
 159         {
 160         case VFT2_FONT_RASTER:TRACE("RASTER");break;
 161         case VFT2_FONT_VECTOR:TRACE("VECTOR");break;
 162         case VFT2_FONT_TRUETYPE:TRACE("TRUETYPE");break;
 163         default:TRACE("UNKNOWN(0x%x)",vffi->dwFileSubtype);break;
 164         }
 165         break;
 166     case VFT_VXD:TRACE("filetype=VXD");break;
 167     case VFT_STATIC_LIB:TRACE("filetype=STATIC_LIB");break;
 168     case VFT_UNKNOWN:
 169     default:
 170         TRACE("filetype=Unknown(0x%x)",vffi->dwFileType);break;
 171     }
 172
 173     TRACE("\n");
 174     TRACE("filedate=0x%x.0x%x\n",vffi->dwFileDateMS,vffi->dwFileDateLS);
 175 }
 176
 177 /***********************************************************************
 178  * Version Info Structure
 179  */
 180
 181 typedef struct
 182 {
 183     WORD  wLength;
 184     WORD  wValueLength;
 185     CHAR  szKey[1];
 186 #if 0   /* variable length structure */
 187     /* DWORD aligned */
 188     BYTE  Value[];
 189     /* DWORD aligned */
 190     VS_VERSION_INFO_STRUCT16 Children[];
 191 #endif
 192 } VS_VERSION_INFO_STRUCT16;
 193
 194 typedef struct
 195 {
 196     WORD  wLength;
 197     WORD  wValueLength;
 198     WORD  wType;
 199     WCHAR szKey[1];
 200 #if 0   /* variable length structure */
 201     /* DWORD aligned */
 202     BYTE  Value[];
 203     /* DWORD aligned */
 204     VS_VERSION_INFO_STRUCT32 Children[];
 205 #endif
 206 } VS_VERSION_INFO_STRUCT32;
 207
 208 #define VersionInfoIs16( ver ) \
 209     ( ((const VS_VERSION_INFO_STRUCT16 *)ver)->szKey[0] >= ' ' )
 210
 211 #define DWORD_ALIGN( base, ptr ) \
 212     ( (LPBYTE)(base) + ((((LPBYTE)(ptr) - (LPBYTE)(base)) + 3) & ~3) )
 213
 214 #define VersionInfo16_Value( ver )  \
 215     DWORD_ALIGN( (ver), (ver)->szKey + strlen((ver)->szKey) + 1 )
 216 #define VersionInfo32_Value( ver )  \
 217     DWORD_ALIGN( (ver), (ver)->szKey + strlenW((ver)->szKey) + 1 )
 218
 219 #define VersionInfo16_Children( ver )  \
 220     (const VS_VERSION_INFO_STRUCT16 *)( VersionInfo16_Value( ver ) + \
 221                            ( ( (ver)->wValueLength + 3 ) & ~3 ) )
 222 #define VersionInfo32_Children( ver )  \
 223     (const VS_VERSION_INFO_STRUCT32 *)( VersionInfo32_Value( ver ) + \
 224                            ( ( (ver)->wValueLength * \
 225                                ((ver)->wType? 2 : 1) + 3 ) & ~3 ) )
 226
 227 #define VersionInfo16_Next( ver ) \
 228     (VS_VERSION_INFO_STRUCT16 *)( (LPBYTE)ver + (((ver)->wLength + 3) & ~3) )
 229 #define VersionInfo32_Next( ver ) \
 230     (VS_VERSION_INFO_STRUCT32 *)( (LPBYTE)ver + (((ver)->wLength + 3) & ~3) )
 231
 232 /***********************************************************************
 233  *           VERSION_GetFileVersionInfo_PE             [internal]
 234  *
 235  *    NOTE: returns size of the PE VERSION resource or 0xFFFFFFFF
 236  *    in the case the file is a PE module, but VERSION_INFO not found.
 237  */
 238 static DWORD VERSION_GetFileVersionInfo_PE( LPCWSTR filename, DWORD datasize, LPVOID data )
 239 {
 240     const VS_FIXEDFILEINFO *vffi;
 241     DWORD len;
 242     BYTE *buf;
 243     HMODULE hModule;
 244     HRSRC hRsrc;
 245     HGLOBAL hMem;
 246
 247     TRACE("%s\n", debugstr_w(filename));
 248
 249     if (!GetModuleHandleExW(0, filename, &hModule))
 250         hModule = LoadLibraryExW(filename, 0, LOAD_LIBRARY_AS_DATAFILE);
 251
 252     if(!hModule)
 253     {
 254         WARN("Could not load %s\n", debugstr_w(filename));
 255         return 0;
 256     }
 257     hRsrc = FindResourceW(hModule,
 258                           MAKEINTRESOURCEW(VS_VERSION_INFO),
 259                           MAKEINTRESOURCEW(VS_FILE_INFO));
 260     if(!hRsrc)
 261     {
 262         WARN("Could not find VS_VERSION_INFO in %s\n", debugstr_w(filename));
 263         FreeLibrary(hModule);
 264         return 0xFFFFFFFF;
 265     }
 266     len = SizeofResource(hModule, hRsrc);
 267     hMem = LoadResource(hModule, hRsrc);
 268     if(!hMem)
 269     {
 270         WARN("Could not load VS_VERSION_INFO from %s\n", debugstr_w(filename));
 271         FreeLibrary(hModule);
 272         return 0xFFFFFFFF;
 273     }
 274     buf = LockResource(hMem);
 275
 276     vffi = (VS_FIXEDFILEINFO *)VersionInfo32_Value( (VS_VERSION_INFO_STRUCT32 *)buf );
 277
 278     if ( vffi->dwSignature != VS_FFI_SIGNATURE )
 279     {
 280         WARN("vffi->dwSignature is 0x%08x, but not 0x%08lx!\n",
 281                    vffi->dwSignature, VS_FFI_SIGNATURE );
 282         len = 0xFFFFFFFF;
 283         goto END;
 284     }
 285
 286     if ( TRACE_ON(ver) )
 287         print_vffi_debug( vffi );
 288
 289     if(data)
 290     {
 291         if(datasize < len)
 292             len = datasize; /* truncate data */
 293         if(len)
 294             memcpy(data, buf, len);
 295         else
 296             len = 0xFFFFFFFF;
 297     }
 298 END:
 299     FreeResource(hMem);
 300     FreeLibrary(hModule);
 301
 302     return len;
 303 }
 304
 305 /***********************************************************************
 306  *           VERSION_GetFileVersionInfo_16             [internal]
 307  *
 308  *    NOTE: returns size of the 16-bit VERSION resource or 0xFFFFFFFF
 309  *    in the case the file exists, but VERSION_INFO not found.
 310  */
 311 static DWORD VERSION_GetFileVersionInfo_16( LPCSTR filename, DWORD datasize, LPVOID data )
 312 {
 313     const VS_FIXEDFILEINFO *vffi;
 314     DWORD len, offset;
 315     BYTE *buf;
 316     HMODULE16 hModule;
 317     HRSRC16 hRsrc;
 318     HGLOBAL16 hMem;
 319     char dllname[20], owner[20], *p;
 320     const char *basename;
 321     BOOL is_builtin = FALSE;
 322
 323     TRACE("%s\n", debugstr_a(filename));
 324
 325     /* strip path information */
 326
 327     basename = filename;
 328     if (basename[0] && basename[1] == ':') basename += 2;  /* strip drive specification */
 329     if ((p = strrchr( basename, '\\' ))) basename = p + 1;
 330     if ((p = strrchr( basename, '/' ))) basename = p + 1;
 331
 332     if (strlen(basename) < sizeof(dllname)-4)
 333     {
 334         int file_exists;
 335
 336         strcpy( dllname, basename );
 337         p = strrchr( dllname, '.' );
 338         if (!p) strcat( dllname, ".dll" );
 339         for (p = dllname; *p; p++) if (*p >= 'A' && *p <= 'Z') *p += 32;
 340
 341         if (wine_dll_get_owner( dllname, owner, sizeof(owner), &file_exists ) == 0)
 342             is_builtin = TRUE;
 343     }
 344
 345     /* first try without loading a 16-bit module */
 346     if (is_builtin)
 347         len = 0;
 348     else
 349         len = GetFileResourceSize16( filename,
 350                                      MAKEINTRESOURCEA(VS_FILE_INFO),
 351                                      MAKEINTRESOURCEA(VS_VERSION_INFO),
 352                                      &offset );
 353     if (len)
 354     {
 355         if (!data) return len;
 356
 357         len = GetFileResource16( filename,
 358                                  MAKEINTRESOURCEA(VS_FILE_INFO),
 359                                  MAKEINTRESOURCEA(VS_VERSION_INFO),
 360                                  offset, datasize, data );
 361         if (len)
 362         {
 363             vffi = (VS_FIXEDFILEINFO *)VersionInfo16_Value( (VS_VERSION_INFO_STRUCT16 *)data );
 364
 365             if ( vffi->dwSignature == VS_FFI_SIGNATURE )
 366             {
 367                 if ( ((VS_VERSION_INFO_STRUCT16 *)data)->wLength < len )
 368                     len = ((VS_VERSION_INFO_STRUCT16 *)data)->wLength;
 369
 370                 if ( TRACE_ON(ver) )
 371                     print_vffi_debug( vffi );
 372
 373                 return len;
 374             }
 375         }
 376     }
 377
 378     /* this might be a builtin 16-bit module */
 379     hModule = LoadLibrary16(filename);
 380     if(hModule < 32)
 381     {
 382         WARN("Could not load %s\n", debugstr_a(filename));
 383         return 0;
 384     }
 385     hRsrc = FindResource16(hModule,
 386                           MAKEINTRESOURCEA(VS_VERSION_INFO),
 387                           MAKEINTRESOURCEA(VS_FILE_INFO));
 388     if(!hRsrc)
 389     {
 390         WARN("Could not find VS_VERSION_INFO in %s\n", debugstr_a(filename));
 391         FreeLibrary16(hModule);
 392         return 0xFFFFFFFF;
 393     }
 394     len = SizeofResource16(hModule, hRsrc);
 395     hMem = LoadResource16(hModule, hRsrc);
 396     if(!hMem)
 397     {
 398         WARN("Could not load VS_VERSION_INFO from %s\n", debugstr_a(filename));
 399         FreeLibrary16(hModule);
 400         return 0xFFFFFFFF;
 401     }
 402     buf = LockResource16(hMem);
 403
 404     if(!VersionInfoIs16(buf))
 405     {
 406         len = 0xFFFFFFFF;
 407         goto END;
 408     }
 409
 410     vffi = (VS_FIXEDFILEINFO *)VersionInfo16_Value( (VS_VERSION_INFO_STRUCT16 *)buf );
 411
 412     if ( vffi->dwSignature != VS_FFI_SIGNATURE )
 413     {
 414         WARN("vffi->dwSignature is 0x%08x, but not 0x%08lx!\n",
 415                    vffi->dwSignature, VS_FFI_SIGNATURE );
 416         len = 0xFFFFFFFF;
 417         goto END;
 418     }
 419
 420     if ( TRACE_ON(ver) )
 421         print_vffi_debug( vffi );
 422
 423     if(data)
 424     {
 425         if(datasize < len)
 426             len = datasize; /* truncate data */
 427         if(len)
 428             memcpy(data, buf, len);
 429         else
 430             len = 0xFFFFFFFF;
 431     }
 432 END:
 433     FreeResource16(hMem);
 434     FreeLibrary16(hModule);
 435
 436     return len;
 437 }
 438
 439 /***********************************************************************
 440  *           GetFileVersionInfoSizeW         [VERSION.@]
 441  */
 442 DWORD WINAPI GetFileVersionInfoSizeW( LPCWSTR filename, LPDWORD handle )
 443 {
 444     DWORD len;
 445
 446     TRACE("(%s,%p)\n", debugstr_w(filename), handle );
 447
 448     if (handle) *handle = 0;
 449
 450     if (!filename)
 451     {
 452         SetLastError(ERROR_INVALID_PARAMETER);
 453         return 0;
 454     }
 455     if (!*filename)
 456     {
 457         SetLastError(ERROR_BAD_PATHNAME);
 458         return 0;
 459     }
 460
 461     len = VERSION_GetFileVersionInfo_PE(filename, 0, NULL);
 462     /* 0xFFFFFFFF means: file is a PE module, but VERSION_INFO not found */
 463     if(len == 0xFFFFFFFF)
 464     {
 465         SetLastError(ERROR_RESOURCE_DATA_NOT_FOUND);
 466         return 0;
 467     }
 468
 469     if (!len)
 470     {
 471         LPSTR filenameA;
 472
 473         len = WideCharToMultiByte( CP_ACP, 0, filename, -1, NULL, 0, NULL, NULL );
 474         filenameA = HeapAlloc( GetProcessHeap(), 0, len );
 475         WideCharToMultiByte( CP_ACP, 0, filename, -1, filenameA, len, NULL, NULL );
 476
 477         len = VERSION_GetFileVersionInfo_16(filenameA, 0, NULL);
 478         HeapFree( GetProcessHeap(), 0, filenameA );
 479         /* 0xFFFFFFFF means: file exists, but VERSION_INFO not found */
 480         if (!len)
 481         {
 482             SetLastError(ERROR_FILE_NOT_FOUND);
 483             return 0;
 484         }
 485         if (len == 0xFFFFFFFF)
 486         {
 487             SetLastError(ERROR_RESOURCE_DATA_NOT_FOUND);
 488             return 0;
 489         }
 490
 491         /* We have a 16bit resource.
 492          *
 493          * XP/W2K/W2K3 uses a buffer which is more than the actual needed space:
 494          *
 495          * (info->wLength - sizeof(VS_FIXEDFILEINFO)) * 4
 496          *
 497          * This extra buffer is used for ANSI to Unicode conversions in W-Calls.
 498          * info->wLength should be the same as len. Currently it isn't but that
 499          * doesn't seem to be a problem (len is bigger than info->wLength).
 500          */
 501          len = (len - sizeof(VS_FIXEDFILEINFO)) * 4;
 502     }
 503     else
 504     {
 505         /* We have a 32bit resource.
 506          *
 507          * XP/W2K/W2K3 uses a buffer which is 2 times the actual needed space + 4 bytes "FE2X"
 508          * This extra buffer is used for Unicode to ANSI conversions in A-Calls
 509          */
 510          len = (len * 2) + 4;
 511     }
 512
 513     SetLastError(0);
 514     return len;
 515 }
 516
 517 /***********************************************************************
 518  *           GetFileVersionInfoSizeA         [VERSION.@]
 519  */
 520 DWORD WINAPI GetFileVersionInfoSizeA( LPCSTR filename, LPDWORD handle )
 521 {
 522     UNICODE_STRING filenameW;
 523     DWORD retval;
 524
 525     TRACE("(%s,%p)\n", debugstr_a(filename), handle );
 526
 527     if(filename)
 528         RtlCreateUnicodeStringFromAsciiz(&filenameW, filename);
 529     else
 530         filenameW.Buffer = NULL;
 531
 532     retval = GetFileVersionInfoSizeW(filenameW.Buffer, handle);
 533
 534     RtlFreeUnicodeString(&filenameW);
 535
 536     return retval;
 537 }
 538
 539 /***********************************************************************
 540  *           GetFileVersionInfoW             [VERSION.@]
 541  */
 542 BOOL WINAPI GetFileVersionInfoW( LPCWSTR filename, DWORD handle,
 543                                     DWORD datasize, LPVOID data )
 544 {
 545     DWORD len;
 546     VS_VERSION_INFO_STRUCT32* vvis = (VS_VERSION_INFO_STRUCT32*)data;
 547
 548     TRACE("(%s,%d,size=%d,data=%p)\n",
 549                 debugstr_w(filename), handle, datasize, data );
 550
 551     if (!data)
 552     {
 553         SetLastError(ERROR_INVALID_DATA);
 554         return FALSE;
 555     }
 556     len = VERSION_GetFileVersionInfo_PE(filename, datasize, data);
 557     /* 0xFFFFFFFF means: file is a PE module, but VERSION_INFO not found */
 558     if (len == 0xFFFFFFFF)
 559     {
 560         SetLastError(ERROR_RESOURCE_DATA_NOT_FOUND);
 561         return FALSE;
 562     }
 563
 564     if (!len)
 565     {
 566         LPSTR filenameA;
 567
 568         len = WideCharToMultiByte( CP_ACP, 0, filename, -1, NULL, 0, NULL, NULL );
 569         filenameA = HeapAlloc( GetProcessHeap(), 0, len );
 570         WideCharToMultiByte( CP_ACP, 0, filename, -1, filenameA, len, NULL, NULL );
 571
 572         len = VERSION_GetFileVersionInfo_16(filenameA, datasize, data);
 573         HeapFree( GetProcessHeap(), 0, filenameA );
 574         /* 0xFFFFFFFF means: file exists, but VERSION_INFO not found */
 575         if (!len || len == 0xFFFFFFFF)
 576         {
 577             SetLastError(ERROR_RESOURCE_DATA_NOT_FOUND);
 578             return FALSE;
 579         }
 580         /* We have a 16bit resource. */
 581     }
 582     else
 583     {
 584         static const char signature[] = "FE2X";
 585         DWORD bufsize = vvis->wLength + strlen(signature);
 586         DWORD convbuf;
 587
 588         /* We have a 32bit resource.
 589          *
 590          * XP/W2K/W2K3 uses a buffer which is 2 times the actual needed space + 4 bytes "FE2X"
 591          * This extra buffer is used for Unicode to ANSI conversions in A-Calls
 592          */
 593
 594         /* information is truncated to datasize bytes */
 595         if (datasize >= bufsize)
 596         {
 597             convbuf = datasize - vvis->wLength;
 598             memcpy( ((char*)(data))+vvis->wLength, signature, convbuf > 4 ? 4 : convbuf );
 599         }
 600     }
 601
 602     SetLastError(0);
 603     return TRUE;
 604 }
 605
 606 /***********************************************************************
 607  *           GetFileVersionInfoA             [VERSION.@]
 608  */
 609 BOOL WINAPI GetFileVersionInfoA( LPCSTR filename, DWORD handle,
 610                                     DWORD datasize, LPVOID data )
 611 {
 612     UNICODE_STRING filenameW;
 613     BOOL retval;
 614
 615     TRACE("(%s,%d,size=%d,data=%p)\n",
 616                 debugstr_a(filename), handle, datasize, data );
 617
 618     if(filename)
 619         RtlCreateUnicodeStringFromAsciiz(&filenameW, filename);
 620     else
 621         filenameW.Buffer = NULL;
 622
 623     retval = GetFileVersionInfoW(filenameW.Buffer, handle, datasize, data);
 624
 625     RtlFreeUnicodeString(&filenameW);
 626
 627     return retval;
 628 }
 629
 630 /***********************************************************************
 631  *           VersionInfo16_FindChild             [internal]
 632  */
 633 static const VS_VERSION_INFO_STRUCT16 *VersionInfo16_FindChild( const VS_VERSION_INFO_STRUCT16 *info,
 634                                             LPCSTR szKey, UINT cbKey )
 635 {
 636     const VS_VERSION_INFO_STRUCT16 *child = VersionInfo16_Children( info );
 637
 638     while ((char *)child < (char *)info + info->wLength )
 639     {
 640         if (!strncasecmp( child->szKey, szKey, cbKey ) && !child->szKey[cbKey])
 641             return child;
 642
 643         if (!(child->wLength)) return NULL;
 644         child = VersionInfo16_Next( child );
 645     }
 646
 647     return NULL;
 648 }
 649
 650 /***********************************************************************
 651  *           VersionInfo32_FindChild             [internal]
 652  */
 653 static const VS_VERSION_INFO_STRUCT32 *VersionInfo32_FindChild( const VS_VERSION_INFO_STRUCT32 *info,
 654                                             LPCWSTR szKey, UINT cbKey )
 655 {
 656     const VS_VERSION_INFO_STRUCT32 *child = VersionInfo32_Children( info );
 657
 658     while ((char *)child < (char *)info + info->wLength )
 659     {
 660         if (!strncmpiW( child->szKey, szKey, cbKey ) && !child->szKey[cbKey])
 661             return child;
 662
 663         child = VersionInfo32_Next( child );
 664     }
 665
 666     return NULL;
 667 }
 668
 669 /***********************************************************************
 670  *           VersionInfo16_QueryValue              [internal]
 671  *
 672  *    Gets a value from a 16-bit NE resource
 673  */
 674 static BOOL WINAPI VersionInfo16_QueryValue( const VS_VERSION_INFO_STRUCT16 *info, LPCSTR lpSubBlock,
 675                                LPVOID *lplpBuffer, UINT *puLen )
 676 {
 677     while ( *lpSubBlock )
 678     {
 679         /* Find next path component */
 680         LPCSTR lpNextSlash;
 681         for ( lpNextSlash = lpSubBlock; *lpNextSlash; lpNextSlash++ )
 682             if ( *lpNextSlash == '\\' )
 683                 break;
 684
 685         /* Skip empty components */
 686         if ( lpNextSlash == lpSubBlock )
 687         {
 688             lpSubBlock++;
 689             continue;
 690         }
 691
 692         /* We have a non-empty component: search info for key */
 693         info = VersionInfo16_FindChild( info, lpSubBlock, lpNextSlash-lpSubBlock );
 694         if ( !info )
 695         {
 696             if (puLen) *puLen = 0 ;
 697             SetLastError( ERROR_RESOURCE_TYPE_NOT_FOUND );
 698             return FALSE;
 699         }
 700
 701         /* Skip path component */
 702         lpSubBlock = lpNextSlash;
 703     }
 704
 705     /* Return value */
 706     *lplpBuffer = VersionInfo16_Value( info );
 707     if (puLen)
 708         *puLen = info->wValueLength;
 709
 710     return TRUE;
 711 }
 712
 713 /***********************************************************************
 714  *           VersionInfo32_QueryValue              [internal]
 715  *
 716  *    Gets a value from a 32-bit PE resource
 717  */
 718 static BOOL WINAPI VersionInfo32_QueryValue( const VS_VERSION_INFO_STRUCT32 *info, LPCWSTR lpSubBlock,
 719                                LPVOID *lplpBuffer, UINT *puLen )
 720 {
 721     TRACE("lpSubBlock : (%s)\n", debugstr_w(lpSubBlock));
 722
 723     while ( *lpSubBlock )
 724     {
 725         /* Find next path component */
 726         LPCWSTR lpNextSlash;
 727         for ( lpNextSlash = lpSubBlock; *lpNextSlash; lpNextSlash++ )
 728             if ( *lpNextSlash == '\\' )
 729                 break;
 730
 731         /* Skip empty components */
 732         if ( lpNextSlash == lpSubBlock )
 733         {
 734             lpSubBlock++;
 735             continue;
 736         }
 737
 738         /* We have a non-empty component: search info for key */
 739         info = VersionInfo32_FindChild( info, lpSubBlock, lpNextSlash-lpSubBlock );
 740         if ( !info )
 741         {
 742             if (puLen) *puLen = 0 ;
 743             SetLastError( ERROR_RESOURCE_TYPE_NOT_FOUND );
 744             return FALSE;
 745         }
 746
 747         /* Skip path component */
 748         lpSubBlock = lpNextSlash;
 749     }
 750
 751     /* Return value */
 752     *lplpBuffer = VersionInfo32_Value( info );
 753     if (puLen)
 754         *puLen = info->wValueLength;
 755
 756     return TRUE;
 757 }
 758
 759 /***********************************************************************
 760  *           VerQueryValueA              [VERSION.@]
 761  */
 762 BOOL WINAPI VerQueryValueA( LPCVOID pBlock, LPCSTR lpSubBlock,
 763                                LPVOID *lplpBuffer, PUINT puLen )
 764 {
 765     static const char rootA[] = "\\";
 766     static const char varfileinfoA[] = "\\VarFileInfo\\Translation";
 767     const VS_VERSION_INFO_STRUCT16 *info = (const VS_VERSION_INFO_STRUCT16 *)pBlock;
 768
 769     TRACE("(%p,%s,%p,%p)\n",
 770                 pBlock, debugstr_a(lpSubBlock), lplpBuffer, puLen );
 771
 772      if (!pBlock)
 773         return FALSE;
 774
 775     if ( !VersionInfoIs16( info ) )
 776     {
 777         BOOL ret;
 778         INT len;
 779         LPWSTR lpSubBlockW;
 780
 781         len  = MultiByteToWideChar(CP_ACP, 0, lpSubBlock, -1, NULL, 0);
 782         lpSubBlockW = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR));
 783
 784         if (!lpSubBlockW)
 785             return FALSE;
 786
 787         MultiByteToWideChar(CP_ACP, 0, lpSubBlock, -1, lpSubBlockW, len);
 788
 789         ret = VersionInfo32_QueryValue(pBlock, lpSubBlockW, lplpBuffer, puLen);
 790
 791         HeapFree(GetProcessHeap(), 0, lpSubBlockW);
 792
 793         if (ret && strcasecmp( lpSubBlock, rootA ) && strcasecmp( lpSubBlock, varfileinfoA ))
 794         {
 795             /* Set lpBuffer so it points to the 'empty' area where we store
 796              * the converted strings
 797              */
 798             LPSTR lpBufferA = (LPSTR)pBlock + info->wLength + 4;
 799             DWORD pos = (LPCSTR)*lplpBuffer - (LPCSTR)pBlock;
 800
 801             len = WideCharToMultiByte(CP_ACP, 0, (LPCWSTR)*lplpBuffer, -1,
 802                                       lpBufferA + pos, info->wLength - pos, NULL, NULL);
 803             *lplpBuffer = lpBufferA + pos;
 804             *puLen = len;
 805         }
 806         return ret;
 807     }
 808
 809     return VersionInfo16_QueryValue(info, lpSubBlock, lplpBuffer, puLen);
 810 }
 811
 812 /***********************************************************************
 813  *           VerQueryValueW              [VERSION.@]
 814  */
 815 BOOL WINAPI VerQueryValueW( LPCVOID pBlock, LPCWSTR lpSubBlock,
 816                                LPVOID *lplpBuffer, PUINT puLen )
 817 {
 818     static const WCHAR rootW[] = { '\\', 0 };
 819     static const WCHAR varfileinfoW[] = { '\\','V','a','r','F','i','l','e','I','n','f','o',
 820                                           '\\','T','r','a','n','s','l','a','t','i','o','n', 0 };
 821
 822     const VS_VERSION_INFO_STRUCT32 *info = (const VS_VERSION_INFO_STRUCT32 *)pBlock;
 823
 824     TRACE("(%p,%s,%p,%p)\n",
 825                 pBlock, debugstr_w(lpSubBlock), lplpBuffer, puLen );
 826
 827     if (!pBlock)
 828         return FALSE;
 829
 830     if ( VersionInfoIs16( info ) )
 831     {
 832         BOOL ret;
 833         int len;
 834         LPSTR lpSubBlockA;
 835
 836         len = WideCharToMultiByte(CP_ACP, 0, lpSubBlock, -1, NULL, 0, NULL, NULL);
 837         lpSubBlockA = HeapAlloc(GetProcessHeap(), 0, len * sizeof(char));
 838
 839         if (!lpSubBlockA)
 840             return FALSE;
 841
 842         WideCharToMultiByte(CP_ACP, 0, lpSubBlock, -1, lpSubBlockA, len, NULL, NULL);
 843
 844         ret = VersionInfo16_QueryValue(pBlock, lpSubBlockA, lplpBuffer, puLen);
 845
 846         HeapFree(GetProcessHeap(), 0, lpSubBlockA);
 847
 848         if (ret && strcmpiW( lpSubBlock, rootW ) && strcmpiW( lpSubBlock, varfileinfoW ))
 849         {
 850             /* Set lpBuffer so it points to the 'empty' area where we store
 851              * the converted strings
 852              */
 853             LPWSTR lpBufferW = (LPWSTR)((LPSTR)pBlock + info->wLength);
 854             DWORD pos = (LPCSTR)*lplpBuffer - (LPCSTR)pBlock;
 855             DWORD max = (info->wLength - sizeof(VS_FIXEDFILEINFO)) * 4 - info->wLength;
 856
 857             len = MultiByteToWideChar(CP_ACP, 0, (LPCSTR)*lplpBuffer, -1,
 858                                       lpBufferW + pos, max/sizeof(WCHAR) - pos );
 859             *lplpBuffer = lpBufferW + pos;
 860             *puLen = len;
 861         }
 862         return ret;
 863     }
 864
 865     return VersionInfo32_QueryValue(info, lpSubBlock, lplpBuffer, puLen);
 866 }