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
 256         return 0;
 257     }
 258     hRsrc = FindResourceW(hModule,
 259                           MAKEINTRESOURCEW(VS_VERSION_INFO),
 260                           MAKEINTRESOURCEW(VS_FILE_INFO));
 261     if(!hRsrc)
 262     {
 263         WARN("Could not find VS_VERSION_INFO in %s\n", debugstr_w(filename));
 264         FreeLibrary(hModule);
 265         return 0xFFFFFFFF;
 266     }
 267     len = SizeofResource(hModule, hRsrc);
 268     hMem = LoadResource(hModule, hRsrc);
 269     if(!hMem)
 270     {
 271         WARN("Could not load VS_VERSION_INFO from %s\n", debugstr_w(filename));
 272         FreeLibrary(hModule);
 273         return 0xFFFFFFFF;
 274     }
 275     buf = LockResource(hMem);
 276
 277     vffi = (VS_FIXEDFILEINFO *)VersionInfo32_Value( (VS_VERSION_INFO_STRUCT32 *)buf );
 278
 279     if ( vffi->dwSignature != VS_FFI_SIGNATURE )
 280     {
 281         WARN("vffi->dwSignature is 0x%08x, but not 0x%08lx!\n",
 282                    vffi->dwSignature, VS_FFI_SIGNATURE );
 283         len = 0xFFFFFFFF;
 284         goto END;
 285     }
 286
 287     if ( TRACE_ON(ver) )
 288         print_vffi_debug( vffi );
 289
 290     if(data)
 291     {
 292         if(datasize < len)
 293             len = datasize; /* truncate data */
 294         if(len)
 295             memcpy(data, buf, len);
 296         else
 297             len = 0xFFFFFFFF;
 298     }
 299 END:
 300     FreeResource(hMem);
 301     FreeLibrary(hModule);
 302
 303     return len;
 304 }
 305
 306 /***********************************************************************
 307  *           VERSION_GetFileVersionInfo_16             [internal]
 308  *
 309  *    NOTE: returns size of the 16-bit VERSION resource or 0xFFFFFFFF
 310  *    in the case the file exists, but VERSION_INFO not found.
 311  */
 312 static DWORD VERSION_GetFileVersionInfo_16( LPCSTR filename, DWORD datasize, LPVOID data )
 313 {
 314     const VS_FIXEDFILEINFO *vffi;
 315     DWORD len, offset;
 316     BYTE *buf;
 317     HMODULE16 hModule;
 318     HRSRC16 hRsrc;
 319     HGLOBAL16 hMem;
 320     char dllname[20], owner[20], *p;
 321     const char *basename;
 322     BOOL is_builtin = FALSE;
 323
 324     TRACE("%s\n", debugstr_a(filename));
 325
 326     /* strip path information */
 327
 328     basename = filename;
 329     if (basename[0] && basename[1] == ':') basename += 2;  /* strip drive specification */
 330     if ((p = strrchr( basename, '\\' ))) basename = p + 1;
 331     if ((p = strrchr( basename, '/' ))) basename = p + 1;
 332
 333     if (strlen(basename) < sizeof(dllname)-4)
 334     {
 335         int file_exists;
 336
 337         strcpy( dllname, basename );
 338         p = strrchr( dllname, '.' );
 339         if (!p) strcat( dllname, ".dll" );
 340         for (p = dllname; *p; p++) if (*p >= 'A' && *p <= 'Z') *p += 32;
 341
 342         if (wine_dll_get_owner( dllname, owner, sizeof(owner), &file_exists ) == 0)
 343             is_builtin = TRUE;
 344     }
 345
 346     /* first try without loading a 16-bit module */
 347     if (is_builtin)
 348         len = 0;
 349     else
 350         len = GetFileResourceSize16( filename,
 351                                      MAKEINTRESOURCEA(VS_FILE_INFO),
 352                                      MAKEINTRESOURCEA(VS_VERSION_INFO),
 353                                      &offset );
 354     if (len)
 355     {
 356         if (!data) return len;
 357
 358         len = GetFileResource16( filename,
 359                                  MAKEINTRESOURCEA(VS_FILE_INFO),
 360                                  MAKEINTRESOURCEA(VS_VERSION_INFO),
 361                                  offset, datasize, data );
 362         if (len)
 363         {
 364             vffi = (VS_FIXEDFILEINFO *)VersionInfo16_Value( (VS_VERSION_INFO_STRUCT16 *)data );
 365
 366             if ( vffi->dwSignature == VS_FFI_SIGNATURE )
 367             {
 368                 if ( ((VS_VERSION_INFO_STRUCT16 *)data)->wLength < len )
 369                     len = ((VS_VERSION_INFO_STRUCT16 *)data)->wLength;
 370
 371                 if ( TRACE_ON(ver) )
 372                     print_vffi_debug( vffi );
 373
 374                 return len;
 375             }
 376         }
 377     }
 378
 379     /* this might be a builtin 16-bit module */
 380     hModule = LoadLibrary16(filename);
 381     if(hModule < 32)
 382     {
 383         WARN("Could not load %s\n", debugstr_a(filename));
 384         if (hModule == ERROR_BAD_FORMAT)
 385                 return 0xFFFFFFFF;
 386         else
 387                 return 0x0;
 388     }
 389     hRsrc = FindResource16(hModule,
 390                           MAKEINTRESOURCEA(VS_VERSION_INFO),
 391                           MAKEINTRESOURCEA(VS_FILE_INFO));
 392     if(!hRsrc)
 393     {
 394         WARN("Could not find VS_VERSION_INFO in %s\n", debugstr_a(filename));
 395         FreeLibrary16(hModule);
 396         return 0xFFFFFFFF;
 397     }
 398     len = SizeofResource16(hModule, hRsrc);
 399     hMem = LoadResource16(hModule, hRsrc);
 400     if(!hMem)
 401     {
 402         WARN("Could not load VS_VERSION_INFO from %s\n", debugstr_a(filename));
 403         FreeLibrary16(hModule);
 404         return 0xFFFFFFFF;
 405     }
 406     buf = LockResource16(hMem);
 407
 408     if(!VersionInfoIs16(buf))
 409     {
 410         len = 0xFFFFFFFF;
 411         goto END;
 412     }
 413
 414     vffi = (VS_FIXEDFILEINFO *)VersionInfo16_Value( (VS_VERSION_INFO_STRUCT16 *)buf );
 415
 416     if ( vffi->dwSignature != VS_FFI_SIGNATURE )
 417     {
 418         WARN("vffi->dwSignature is 0x%08x, but not 0x%08lx!\n",
 419                    vffi->dwSignature, VS_FFI_SIGNATURE );
 420         len = 0xFFFFFFFF;
 421         goto END;
 422     }
 423
 424     if ( TRACE_ON(ver) )
 425         print_vffi_debug( vffi );
 426
 427     if(data)
 428     {
 429         if(datasize < len)
 430             len = datasize; /* truncate data */
 431         if(len)
 432             memcpy(data, buf, len);
 433         else
 434             len = 0xFFFFFFFF;
 435     }
 436 END:
 437     FreeResource16(hMem);
 438     FreeLibrary16(hModule);
 439
 440     return len;
 441 }
 442
 443 /***********************************************************************
 444  *           GetFileVersionInfoSizeW         [VERSION.@]
 445  */
 446 DWORD WINAPI GetFileVersionInfoSizeW( LPCWSTR filename, LPDWORD handle )
 447 {
 448     DWORD len;
 449
 450     TRACE("(%s,%p)\n", debugstr_w(filename), handle );
 451
 452     if (handle) *handle = 0;
 453
 454     if (!filename)
 455     {
 456         SetLastError(ERROR_INVALID_PARAMETER);
 457         return 0;
 458     }
 459     if (!*filename)
 460     {
 461         SetLastError(ERROR_BAD_PATHNAME);
 462         return 0;
 463     }
 464
 465     len = VERSION_GetFileVersionInfo_PE(filename, 0, NULL);
 466     /* 0xFFFFFFFF means: file is a PE module, but VERSION_INFO not found */
 467     if(len == 0xFFFFFFFF)
 468     {
 469         SetLastError(ERROR_RESOURCE_DATA_NOT_FOUND);
 470         return 0;
 471     }
 472
 473     if (!len)
 474     {
 475         LPSTR filenameA;
 476
 477         len = WideCharToMultiByte( CP_ACP, 0, filename, -1, NULL, 0, NULL, NULL );
 478         filenameA = HeapAlloc( GetProcessHeap(), 0, len );
 479         WideCharToMultiByte( CP_ACP, 0, filename, -1, filenameA, len, NULL, NULL );
 480
 481         len = VERSION_GetFileVersionInfo_16(filenameA, 0, NULL);
 482         HeapFree( GetProcessHeap(), 0, filenameA );
 483         /* 0xFFFFFFFF means: file exists, but VERSION_INFO not found */
 484         if (!len)
 485         {
 486             SetLastError(ERROR_FILE_NOT_FOUND);
 487             return 0;
 488         }
 489         if (len == 0xFFFFFFFF)
 490         {
 491             SetLastError(ERROR_RESOURCE_DATA_NOT_FOUND);
 492             return 0;
 493         }
 494
 495         /* We have a 16bit resource.
 496          *
 497          * XP/W2K/W2K3 uses a buffer which is more than the actual needed space:
 498          *
 499          * (info->wLength - sizeof(VS_FIXEDFILEINFO)) * 4
 500          *
 501          * This extra buffer is used for ANSI to Unicode conversions in W-Calls.
 502          * info->wLength should be the same as len. Currently it isn't but that
 503          * doesn't seem to be a problem (len is bigger than info->wLength).
 504          */
 505          len = (len - sizeof(VS_FIXEDFILEINFO)) * 4;
 506     }
 507     else
 508     {
 509         /* We have a 32bit resource.
 510          *
 511          * XP/W2K/W2K3 uses a buffer which is 2 times the actual needed space + 4 bytes "FE2X"
 512          * This extra buffer is used for Unicode to ANSI conversions in A-Calls
 513          */
 514          len = (len * 2) + 4;
 515     }
 516
 517     SetLastError(0);
 518     return len;
 519 }
 520
 521 /***********************************************************************
 522  *           GetFileVersionInfoSizeA         [VERSION.@]
 523  */
 524 DWORD WINAPI GetFileVersionInfoSizeA( LPCSTR filename, LPDWORD handle )
 525 {
 526     UNICODE_STRING filenameW;
 527     DWORD retval;
 528
 529     TRACE("(%s,%p)\n", debugstr_a(filename), handle );
 530
 531     if(filename)
 532         RtlCreateUnicodeStringFromAsciiz(&filenameW, filename);
 533     else
 534         filenameW.Buffer = NULL;
 535
 536     retval = GetFileVersionInfoSizeW(filenameW.Buffer, handle);
 537
 538     RtlFreeUnicodeString(&filenameW);
 539
 540     return retval;
 541 }
 542
 543 /***********************************************************************
 544  *           GetFileVersionInfoW             [VERSION.@]
 545  */
 546 BOOL WINAPI GetFileVersionInfoW( LPCWSTR filename, DWORD handle,
 547                                     DWORD datasize, LPVOID data )
 548 {
 549     DWORD len;
 550     VS_VERSION_INFO_STRUCT32* vvis = (VS_VERSION_INFO_STRUCT32*)data;
 551
 552     TRACE("(%s,%d,size=%d,data=%p)\n",
 553                 debugstr_w(filename), handle, datasize, data );
 554
 555     if (!data)
 556     {
 557         SetLastError(ERROR_INVALID_DATA);
 558         return FALSE;
 559     }
 560     len = VERSION_GetFileVersionInfo_PE(filename, datasize, data);
 561     /* 0xFFFFFFFF means: file is a PE module, but VERSION_INFO not found */
 562     if (len == 0xFFFFFFFF)
 563     {
 564         SetLastError(ERROR_RESOURCE_DATA_NOT_FOUND);
 565         return FALSE;
 566     }
 567
 568     if (!len)
 569     {
 570         LPSTR filenameA;
 571
 572         len = WideCharToMultiByte( CP_ACP, 0, filename, -1, NULL, 0, NULL, NULL );
 573         filenameA = HeapAlloc( GetProcessHeap(), 0, len );
 574         WideCharToMultiByte( CP_ACP, 0, filename, -1, filenameA, len, NULL, NULL );
 575
 576         len = VERSION_GetFileVersionInfo_16(filenameA, datasize, data);
 577         HeapFree( GetProcessHeap(), 0, filenameA );
 578         /* 0xFFFFFFFF means: file exists, but VERSION_INFO not found */
 579         if (!len || len == 0xFFFFFFFF)
 580         {
 581             SetLastError(ERROR_RESOURCE_DATA_NOT_FOUND);
 582             return FALSE;
 583         }
 584         /* We have a 16bit resource. */
 585     }
 586     else
 587     {
 588         static const char signature[] = "FE2X";
 589         DWORD bufsize = vvis->wLength + strlen(signature);
 590         DWORD convbuf;
 591
 592         /* We have a 32bit resource.
 593          *
 594          * XP/W2K/W2K3 uses a buffer which is 2 times the actual needed space + 4 bytes "FE2X"
 595          * This extra buffer is used for Unicode to ANSI conversions in A-Calls
 596          */
 597
 598         /* information is truncated to datasize bytes */
 599         if (datasize >= bufsize)
 600         {
 601             convbuf = datasize - vvis->wLength;
 602             memcpy( ((char*)(data))+vvis->wLength, signature, convbuf > 4 ? 4 : convbuf );
 603         }
 604     }
 605
 606     SetLastError(0);
 607     return TRUE;
 608 }
 609
 610 /***********************************************************************
 611  *           GetFileVersionInfoA             [VERSION.@]
 612  */
 613 BOOL WINAPI GetFileVersionInfoA( LPCSTR filename, DWORD handle,
 614                                     DWORD datasize, LPVOID data )
 615 {
 616     UNICODE_STRING filenameW;
 617     BOOL retval;
 618
 619     TRACE("(%s,%d,size=%d,data=%p)\n",
 620                 debugstr_a(filename), handle, datasize, data );
 621
 622     if(filename)
 623         RtlCreateUnicodeStringFromAsciiz(&filenameW, filename);
 624     else
 625         filenameW.Buffer = NULL;
 626
 627     retval = GetFileVersionInfoW(filenameW.Buffer, handle, datasize, data);
 628
 629     RtlFreeUnicodeString(&filenameW);
 630
 631     return retval;
 632 }
 633
 634 /***********************************************************************
 635  *           VersionInfo16_FindChild             [internal]
 636  */
 637 static const VS_VERSION_INFO_STRUCT16 *VersionInfo16_FindChild( const VS_VERSION_INFO_STRUCT16 *info,
 638                                             LPCSTR szKey, UINT cbKey )
 639 {
 640     const VS_VERSION_INFO_STRUCT16 *child = VersionInfo16_Children( info );
 641
 642     while ((char *)child < (char *)info + info->wLength )
 643     {
 644         if (!strncasecmp( child->szKey, szKey, cbKey ) && !child->szKey[cbKey])
 645             return child;
 646
 647         if (!(child->wLength)) return NULL;
 648         child = VersionInfo16_Next( child );
 649     }
 650
 651     return NULL;
 652 }
 653
 654 /***********************************************************************
 655  *           VersionInfo32_FindChild             [internal]
 656  */
 657 static const VS_VERSION_INFO_STRUCT32 *VersionInfo32_FindChild( const VS_VERSION_INFO_STRUCT32 *info,
 658                                             LPCWSTR szKey, UINT cbKey )
 659 {
 660     const VS_VERSION_INFO_STRUCT32 *child = VersionInfo32_Children( info );
 661
 662     while ((char *)child < (char *)info + info->wLength )
 663     {
 664         if (!strncmpiW( child->szKey, szKey, cbKey ) && !child->szKey[cbKey])
 665             return child;
 666
 667         if (!(child->wLength)) return NULL;
 668         child = VersionInfo32_Next( child );
 669     }
 670
 671     return NULL;
 672 }
 673
 674 /***********************************************************************
 675  *           VersionInfo16_QueryValue              [internal]
 676  *
 677  *    Gets a value from a 16-bit NE resource
 678  */
 679 static BOOL WINAPI VersionInfo16_QueryValue( const VS_VERSION_INFO_STRUCT16 *info, LPCSTR lpSubBlock,
 680                                LPVOID *lplpBuffer, UINT *puLen )
 681 {
 682     while ( *lpSubBlock )
 683     {
 684         /* Find next path component */
 685         LPCSTR lpNextSlash;
 686         for ( lpNextSlash = lpSubBlock; *lpNextSlash; lpNextSlash++ )
 687             if ( *lpNextSlash == '\\' )
 688                 break;
 689
 690         /* Skip empty components */
 691         if ( lpNextSlash == lpSubBlock )
 692         {
 693             lpSubBlock++;
 694             continue;
 695         }
 696
 697         /* We have a non-empty component: search info for key */
 698         info = VersionInfo16_FindChild( info, lpSubBlock, lpNextSlash-lpSubBlock );
 699         if ( !info )
 700         {
 701             if (puLen) *puLen = 0 ;
 702             SetLastError( ERROR_RESOURCE_TYPE_NOT_FOUND );
 703             return FALSE;
 704         }
 705
 706         /* Skip path component */
 707         lpSubBlock = lpNextSlash;
 708     }
 709
 710     /* Return value */
 711     *lplpBuffer = VersionInfo16_Value( info );
 712     if (puLen)
 713         *puLen = info->wValueLength;
 714
 715     return TRUE;
 716 }
 717
 718 /***********************************************************************
 719  *           VersionInfo32_QueryValue              [internal]
 720  *
 721  *    Gets a value from a 32-bit PE resource
 722  */
 723 static BOOL WINAPI VersionInfo32_QueryValue( const VS_VERSION_INFO_STRUCT32 *info, LPCWSTR lpSubBlock,
 724                                LPVOID *lplpBuffer, UINT *puLen )
 725 {
 726     TRACE("lpSubBlock : (%s)\n", debugstr_w(lpSubBlock));
 727
 728     while ( *lpSubBlock )
 729     {
 730         /* Find next path component */
 731         LPCWSTR lpNextSlash;
 732         for ( lpNextSlash = lpSubBlock; *lpNextSlash; lpNextSlash++ )
 733             if ( *lpNextSlash == '\\' )
 734                 break;
 735
 736         /* Skip empty components */
 737         if ( lpNextSlash == lpSubBlock )
 738         {
 739             lpSubBlock++;
 740             continue;
 741         }
 742
 743         /* We have a non-empty component: search info for key */
 744         info = VersionInfo32_FindChild( info, lpSubBlock, lpNextSlash-lpSubBlock );
 745         if ( !info )
 746         {
 747             if (puLen) *puLen = 0 ;
 748             SetLastError( ERROR_RESOURCE_TYPE_NOT_FOUND );
 749             return FALSE;
 750         }
 751
 752         /* Skip path component */
 753         lpSubBlock = lpNextSlash;
 754     }
 755
 756     /* Return value */
 757     *lplpBuffer = VersionInfo32_Value( info );
 758     if (puLen)
 759         *puLen = info->wValueLength;
 760
 761     return TRUE;
 762 }
 763
 764 /***********************************************************************
 765  *           VerQueryValueA              [VERSION.@]
 766  */
 767 BOOL WINAPI VerQueryValueA( LPCVOID pBlock, LPCSTR lpSubBlock,
 768                                LPVOID *lplpBuffer, PUINT puLen )
 769 {
 770     static const char rootA[] = "\\";
 771     static const char varfileinfoA[] = "\\VarFileInfo\\Translation";
 772     const VS_VERSION_INFO_STRUCT16 *info = (const VS_VERSION_INFO_STRUCT16 *)pBlock;
 773
 774     TRACE("(%p,%s,%p,%p)\n",
 775                 pBlock, debugstr_a(lpSubBlock), lplpBuffer, puLen );
 776
 777      if (!pBlock)
 778         return FALSE;
 779
 780     if (lpSubBlock == NULL || lpSubBlock[0] == '\0')
 781         lpSubBlock = rootA;
 782
 783     if ( !VersionInfoIs16( info ) )
 784     {
 785         BOOL ret;
 786         INT len;
 787         LPWSTR lpSubBlockW;
 788
 789         len  = MultiByteToWideChar(CP_ACP, 0, lpSubBlock, -1, NULL, 0);
 790         lpSubBlockW = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR));
 791
 792         if (!lpSubBlockW)
 793             return FALSE;
 794
 795         MultiByteToWideChar(CP_ACP, 0, lpSubBlock, -1, lpSubBlockW, len);
 796
 797         ret = VersionInfo32_QueryValue(pBlock, lpSubBlockW, lplpBuffer, puLen);
 798
 799         HeapFree(GetProcessHeap(), 0, lpSubBlockW);
 800
 801         if (ret && strcasecmp( lpSubBlock, rootA ) && strcasecmp( lpSubBlock, varfileinfoA ))
 802         {
 803             /* Set lpBuffer so it points to the 'empty' area where we store
 804              * the converted strings
 805              */
 806             LPSTR lpBufferA = (LPSTR)pBlock + info->wLength + 4;
 807             DWORD pos = (LPCSTR)*lplpBuffer - (LPCSTR)pBlock;
 808
 809             len = WideCharToMultiByte(CP_ACP, 0, (LPCWSTR)*lplpBuffer, -1,
 810                                       lpBufferA + pos, info->wLength - pos, NULL, NULL);
 811             *lplpBuffer = lpBufferA + pos;
 812             *puLen = len;
 813         }
 814         return ret;
 815     }
 816
 817     return VersionInfo16_QueryValue(info, lpSubBlock, lplpBuffer, puLen);
 818 }
 819
 820 /***********************************************************************
 821  *           VerQueryValueW              [VERSION.@]
 822  */
 823 BOOL WINAPI VerQueryValueW( LPCVOID pBlock, LPCWSTR lpSubBlock,
 824                                LPVOID *lplpBuffer, PUINT puLen )
 825 {
 826     static const WCHAR nullW[] = { 0 };
 827     static const WCHAR rootW[] = { '\\', 0 };
 828     static const WCHAR varfileinfoW[] = { '\\','V','a','r','F','i','l','e','I','n','f','o',
 829                                           '\\','T','r','a','n','s','l','a','t','i','o','n', 0 };
 830
 831     const VS_VERSION_INFO_STRUCT32 *info = (const VS_VERSION_INFO_STRUCT32 *)pBlock;
 832
 833     TRACE("(%p,%s,%p,%p)\n",
 834                 pBlock, debugstr_w(lpSubBlock), lplpBuffer, puLen );
 835
 836     if (!pBlock)
 837         return FALSE;
 838
 839     if (lpSubBlock == NULL || lpSubBlock[0] == nullW[0])
 840         lpSubBlock = rootW;
 841
 842     if ( VersionInfoIs16( info ) )
 843     {
 844         BOOL ret;
 845         int len;
 846         LPSTR lpSubBlockA;
 847
 848         len = WideCharToMultiByte(CP_ACP, 0, lpSubBlock, -1, NULL, 0, NULL, NULL);
 849         lpSubBlockA = HeapAlloc(GetProcessHeap(), 0, len * sizeof(char));
 850
 851         if (!lpSubBlockA)
 852             return FALSE;
 853
 854         WideCharToMultiByte(CP_ACP, 0, lpSubBlock, -1, lpSubBlockA, len, NULL, NULL);
 855
 856         ret = VersionInfo16_QueryValue(pBlock, lpSubBlockA, lplpBuffer, puLen);
 857
 858         HeapFree(GetProcessHeap(), 0, lpSubBlockA);
 859
 860         if (ret && strcmpiW( lpSubBlock, rootW ) && strcmpiW( lpSubBlock, varfileinfoW ))
 861         {
 862             /* Set lpBuffer so it points to the 'empty' area where we store
 863              * the converted strings
 864              */
 865             LPWSTR lpBufferW = (LPWSTR)((LPSTR)pBlock + info->wLength);
 866             DWORD pos = (LPCSTR)*lplpBuffer - (LPCSTR)pBlock;
 867             DWORD max = (info->wLength - sizeof(VS_FIXEDFILEINFO)) * 4 - info->wLength;
 868
 869             len = MultiByteToWideChar(CP_ACP, 0, (LPCSTR)*lplpBuffer, -1,
 870                                       lpBufferW + pos, max/sizeof(WCHAR) - pos );
 871             *lplpBuffer = lpBufferW + pos;
 872             *puLen = len;
 873         }
 874         return ret;
 875     }
 876
 877     return VersionInfo32_QueryValue(info, lpSubBlock, lplpBuffer, puLen);
 878 }