git.oblomov.eu Git - wine/blob - 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  */
   8
   9 #include <stdlib.h>
  10 #include <string.h>
  11
  12 #include "winreg.h"
  13 #include "winver.h"
  14 #include "wine/winuser16.h"
  15 #include "wine/unicode.h"
  16 #include "winerror.h"
  17 #include "debugtools.h"
  18
  19 DEFAULT_DEBUG_CHANNEL(ver);
  20
  21
  22 /******************************************************************************
  23  *
  24  *   This function will print via dprintf[_]ver to stddeb debug info regarding
  25  *   the file info structure vffi.
  26  *      15-Feb-1998 Dimitrie Paun (dimi@cs.toronto.edu)
  27  *      Added this function to clean up the code.
  28  *
  29  *****************************************************************************/
  30 static void print_vffi_debug(VS_FIXEDFILEINFO *vffi)
  31 {
  32         TRACE(" structversion=%u.%u, fileversion=%u.%u.%u.%u, productversion=%u.%u.%u.%u, flagmask=0x%lx, flags=%s%s%s%s%s%s\n",
  33                     HIWORD(vffi->dwStrucVersion),LOWORD(vffi->dwStrucVersion),
  34                     HIWORD(vffi->dwFileVersionMS),LOWORD(vffi->dwFileVersionMS),
  35                     HIWORD(vffi->dwFileVersionLS),LOWORD(vffi->dwFileVersionLS),
  36                     HIWORD(vffi->dwProductVersionMS),LOWORD(vffi->dwProductVersionMS),
  37                     HIWORD(vffi->dwProductVersionLS),LOWORD(vffi->dwProductVersionLS),
  38                     vffi->dwFileFlagsMask,
  39                     (vffi->dwFileFlags & VS_FF_DEBUG) ? "DEBUG," : "",
  40                     (vffi->dwFileFlags & VS_FF_PRERELEASE) ? "PRERELEASE," : "",
  41                     (vffi->dwFileFlags & VS_FF_PATCHED) ? "PATCHED," : "",
  42                     (vffi->dwFileFlags & VS_FF_PRIVATEBUILD) ? "PRIVATEBUILD," : "",
  43                     (vffi->dwFileFlags & VS_FF_INFOINFERRED) ? "INFOINFERRED," : "",
  44                     (vffi->dwFileFlags & VS_FF_SPECIALBUILD) ? "SPECIALBUILD," : ""
  45                     );
  46
  47         TRACE("(");
  48         DPRINTF(" OS=0x%x.0x%x ",
  49                 HIWORD(vffi->dwFileOS),
  50                 LOWORD(vffi->dwFileOS)
  51         );
  52         switch (vffi->dwFileOS&0xFFFF0000) {
  53         case VOS_DOS:DPRINTF("DOS,");break;
  54         case VOS_OS216:DPRINTF("OS/2-16,");break;
  55         case VOS_OS232:DPRINTF("OS/2-32,");break;
  56         case VOS_NT:DPRINTF("NT,");break;
  57         case VOS_UNKNOWN:
  58         default:
  59                 DPRINTF("UNKNOWN(0x%lx),",vffi->dwFileOS&0xFFFF0000);break;
  60         }
  61         switch (LOWORD(vffi->dwFileOS)) {
  62         case VOS__BASE:DPRINTF("BASE");break;
  63         case VOS__WINDOWS16:DPRINTF("WIN16");break;
  64         case VOS__WINDOWS32:DPRINTF("WIN32");break;
  65         case VOS__PM16:DPRINTF("PM16");break;
  66         case VOS__PM32:DPRINTF("PM32");break;
  67         default:DPRINTF("UNKNOWN(0x%x)",LOWORD(vffi->dwFileOS));break;
  68         }
  69         DPRINTF(")\n");
  70
  71         switch (vffi->dwFileType) {
  72         default:
  73         case VFT_UNKNOWN:
  74                 TRACE("filetype=Unknown(0x%lx)",vffi->dwFileType);
  75                 break;
  76         case VFT_APP:TRACE("filetype=APP,");break;
  77         case VFT_DLL:TRACE("filetype=DLL,");break;
  78         case VFT_DRV:
  79                 TRACE("filetype=DRV,");
  80                 switch(vffi->dwFileSubtype) {
  81                 default:
  82                 case VFT2_UNKNOWN:
  83                         DPRINTF("UNKNOWN(0x%lx)",vffi->dwFileSubtype);
  84                         break;
  85                 case VFT2_DRV_PRINTER:
  86                         DPRINTF("PRINTER");
  87                         break;
  88                 case VFT2_DRV_KEYBOARD:
  89                         DPRINTF("KEYBOARD");
  90                         break;
  91                 case VFT2_DRV_LANGUAGE:
  92                         DPRINTF("LANGUAGE");
  93                         break;
  94                 case VFT2_DRV_DISPLAY:
  95                         DPRINTF("DISPLAY");
  96                         break;
  97                 case VFT2_DRV_MOUSE:
  98                         DPRINTF("MOUSE");
  99                         break;
 100                 case VFT2_DRV_NETWORK:
 101                         DPRINTF("NETWORK");
 102                         break;
 103                 case VFT2_DRV_SYSTEM:
 104                         DPRINTF("SYSTEM");
 105                         break;
 106                 case VFT2_DRV_INSTALLABLE:
 107                         DPRINTF("INSTALLABLE");
 108                         break;
 109                 case VFT2_DRV_SOUND:
 110                         DPRINTF("SOUND");
 111                         break;
 112                 case VFT2_DRV_COMM:
 113                         DPRINTF("COMM");
 114                         break;
 115                 case VFT2_DRV_INPUTMETHOD:
 116                         DPRINTF("INPUTMETHOD");
 117                         break;
 118                 }
 119                 break;
 120         case VFT_FONT:
 121                 TRACE("filetype=FONT.");
 122                 switch (vffi->dwFileSubtype) {
 123                 default:
 124                         DPRINTF("UNKNOWN(0x%lx)",vffi->dwFileSubtype);
 125                         break;
 126                 case VFT2_FONT_RASTER:DPRINTF("RASTER");break;
 127                 case VFT2_FONT_VECTOR:DPRINTF("VECTOR");break;
 128                 case VFT2_FONT_TRUETYPE:DPRINTF("TRUETYPE");break;
 129                 }
 130                 break;
 131         case VFT_VXD:TRACE("filetype=VXD");break;
 132         case VFT_STATIC_LIB:TRACE("filetype=STATIC_LIB");break;
 133         }
 134         DPRINTF("\n");
 135         TRACE("  filedata=0x%lx.0x%lx\n",
 136                     vffi->dwFileDateMS,vffi->dwFileDateLS);
 137 }
 138
 139
 140 /***********************************************************************
 141  * Version Info Structure
 142  */
 143
 144 typedef struct
 145 {
 146     WORD  wLength;
 147     WORD  wValueLength;
 148     CHAR  szKey[1];
 149 #if 0   /* variable length structure */
 150     /* DWORD aligned */
 151     BYTE  Value[];
 152     /* DWORD aligned */
 153     VS_VERSION_INFO_STRUCT16 Children[];
 154 #endif
 155 } VS_VERSION_INFO_STRUCT16;
 156
 157 typedef struct
 158 {
 159     WORD  wLength;
 160     WORD  wValueLength;
 161     WORD  bText;
 162     WCHAR szKey[1];
 163 #if 0   /* variable length structure */
 164     /* DWORD aligned */
 165     BYTE  Value[];
 166     /* DWORD aligned */
 167     VS_VERSION_INFO_STRUCT32 Children[];
 168 #endif
 169 } VS_VERSION_INFO_STRUCT32;
 170
 171 #define VersionInfoIs16( ver ) \
 172     ( ((VS_VERSION_INFO_STRUCT16 *)ver)->szKey[0] >= ' ' )
 173
 174 #define DWORD_ALIGN( base, ptr ) \
 175     ( (LPBYTE)(base) + ((((LPBYTE)(ptr) - (LPBYTE)(base)) + 3) & ~3) )
 176
 177 #define VersionInfo16_Value( ver )  \
 178     DWORD_ALIGN( (ver), (ver)->szKey + strlen((ver)->szKey) + 1 )
 179 #define VersionInfo32_Value( ver )  \
 180     DWORD_ALIGN( (ver), (ver)->szKey + strlenW((ver)->szKey) + 1 )
 181
 182 #define VersionInfo16_Children( ver )  \
 183     (VS_VERSION_INFO_STRUCT16 *)( VersionInfo16_Value( ver ) + \
 184                            ( ( (ver)->wValueLength + 3 ) & ~3 ) )
 185 #define VersionInfo32_Children( ver )  \
 186     (VS_VERSION_INFO_STRUCT32 *)( VersionInfo32_Value( ver ) + \
 187                            ( ( (ver)->wValueLength * \
 188                                ((ver)->bText? 2 : 1) + 3 ) & ~3 ) )
 189
 190 #define VersionInfo16_Next( ver ) \
 191     (VS_VERSION_INFO_STRUCT16 *)( (LPBYTE)ver + (((ver)->wLength + 3) & ~3) )
 192 #define VersionInfo32_Next( ver ) \
 193     (VS_VERSION_INFO_STRUCT32 *)( (LPBYTE)ver + (((ver)->wLength + 3) & ~3) )
 194
 195 /***********************************************************************
 196  *           ConvertVersionInfo32To16        [internal]
 197  */
 198 void ConvertVersionInfo32To16( VS_VERSION_INFO_STRUCT32 *info32,
 199                                VS_VERSION_INFO_STRUCT16 *info16 )
 200 {
 201     /* Copy data onto local stack to prevent overwrites */
 202     WORD wLength = info32->wLength;
 203     WORD wValueLength = info32->wValueLength;
 204     WORD bText = info32->bText;
 205     LPBYTE lpValue = VersionInfo32_Value( info32 );
 206     VS_VERSION_INFO_STRUCT32 *child32 = VersionInfo32_Children( info32 );
 207     VS_VERSION_INFO_STRUCT16 *child16;
 208
 209     TRACE("Converting %p to %p\n", info32, info16 );
 210     TRACE("wLength %d, wValueLength %d, bText %d, value %p, child %p\n",
 211                 wLength, wValueLength, bText, lpValue, child32 );
 212
 213     /* Convert key */
 214     WideCharToMultiByte( CP_ACP, 0, info32->szKey, -1, info16->szKey, 0x7fffffff, NULL, NULL );
 215
 216     TRACE("Copied key from %p to %p: %s\n", info32->szKey, info16->szKey,
 217                 debugstr_a(info16->szKey) );
 218
 219     /* Convert value */
 220     if ( wValueLength == 0 )
 221     {
 222         info16->wValueLength = 0;
 223         TRACE("No value present\n" );
 224     }
 225     else if ( bText )
 226     {
 227         info16->wValueLength = WideCharToMultiByte( CP_ACP, 0, (LPCWSTR)lpValue, -1, NULL, 0, NULL, NULL );
 228         WideCharToMultiByte( CP_ACP, 0, (LPCWSTR)lpValue, -1,
 229                              VersionInfo16_Value( info16 ), info16->wValueLength, NULL, NULL );
 230
 231         TRACE("Copied value from %p to %p: %s\n", lpValue,
 232                     VersionInfo16_Value( info16 ),
 233                     debugstr_a(VersionInfo16_Value( info16 )) );
 234     }
 235     else
 236     {
 237         info16->wValueLength = wValueLength;
 238         memmove( VersionInfo16_Value( info16 ), lpValue, wValueLength );
 239
 240         TRACE("Copied value from %p to %p: %d bytes\n", lpValue,
 241                      VersionInfo16_Value( info16 ), wValueLength );
 242     }
 243
 244     /* Convert children */
 245     child16 = VersionInfo16_Children( info16 );
 246     while ( (DWORD)child32 < (DWORD)info32 + wLength )
 247     {
 248         VS_VERSION_INFO_STRUCT32 *nextChild = VersionInfo32_Next( child32 );
 249
 250         ConvertVersionInfo32To16( child32, child16 );
 251
 252         child16 = VersionInfo16_Next( child16 );
 253         child32 = nextChild;
 254     }
 255
 256     /* Fixup length */
 257     info16->wLength = (DWORD)child16 - (DWORD)info16;
 258
 259     TRACE("Finished, length is %d (%p - %p)\n",
 260                 info16->wLength, info16, child16 );
 261 }
 262
 263 /***********************************************************************
 264  *           VERSION_GetFileVersionInfo_PE             [internal]
 265  *
 266  *    NOTE: returns size of the PE VERSION resource or 0xFFFFFFFF
 267  *    in the case if file exists, but VERSION_INFO not found.
 268  *    FIXME: handle is not used.
 269  */
 270 static DWORD WINAPI VERSION_GetFileVersionInfo_PE( LPCSTR filename, LPDWORD handle,
 271                                     DWORD datasize, LPVOID data )
 272 {
 273     VS_FIXEDFILEINFO *vffi;
 274     DWORD len;
 275     BYTE *buf;
 276     HMODULE hModule;
 277     HRSRC hRsrc;
 278     HGLOBAL hMem;
 279     BOOL do_free_library = FALSE;
 280
 281     TRACE("(%s,%p)\n", debugstr_a(filename), handle );
 282
 283     hModule = GetModuleHandleA(filename);
 284     if(!hModule)
 285     {
 286         hModule = LoadLibraryExA(filename, 0, LOAD_LIBRARY_AS_DATAFILE);
 287         do_free_library = TRUE;
 288     }
 289     if(!hModule)
 290     {
 291         WARN("Could not load %s\n", debugstr_a(filename));
 292         return 0;
 293     }
 294     hRsrc = FindResourceW(hModule,
 295                           MAKEINTRESOURCEW(VS_VERSION_INFO),
 296                           MAKEINTRESOURCEW(VS_FILE_INFO));
 297     if(!hRsrc)
 298     {
 299         WARN("Could not find VS_VERSION_INFO in %s\n", debugstr_a(filename));
 300         if(do_free_library) FreeLibrary(hModule);
 301         return 0xFFFFFFFF;
 302     }
 303     len = SizeofResource(hModule, hRsrc);
 304     hMem = LoadResource(hModule, hRsrc);
 305     if(!hMem)
 306     {
 307         WARN("Could not load VS_VERSION_INFO from %s\n", debugstr_a(filename));
 308         if(do_free_library) FreeLibrary(hModule);
 309         return 0xFFFFFFFF;
 310     }
 311     buf = LockResource(hMem);
 312
 313     vffi = (VS_FIXEDFILEINFO *)VersionInfo32_Value( (VS_VERSION_INFO_STRUCT32 *)buf );
 314
 315     if ( vffi->dwSignature != VS_FFI_SIGNATURE )
 316     {
 317         WARN("vffi->dwSignature is 0x%08lx, but not 0x%08lx!\n",
 318                    vffi->dwSignature, VS_FFI_SIGNATURE );
 319         len = 0xFFFFFFFF;
 320         goto END;
 321     }
 322
 323     if ( TRACE_ON(ver) )
 324         print_vffi_debug( vffi );
 325
 326     if(data)
 327     {
 328         if(datasize >= len)
 329             memcpy(data, buf, len);
 330         else
 331             len = 0xFFFFFFFF;
 332     }
 333 END:
 334     FreeResource(hMem);
 335     if(do_free_library) FreeLibrary(hModule);
 336
 337     return len;
 338 }
 339
 340 /***********************************************************************
 341  *           VERSION_GetFileVersionInfo_16             [internal]
 342  *
 343  *    NOTE: returns size of the 16-bit VERSION resource or 0xFFFFFFFF
 344  *    in the case if file exists, but VERSION_INFO not found.
 345  *    FIXME: handle is not used.
 346  */
 347 static DWORD WINAPI VERSION_GetFileVersionInfo_16( LPCSTR filename, LPDWORD handle,
 348                                     DWORD datasize, LPVOID data )
 349 {
 350     VS_FIXEDFILEINFO *vffi;
 351     DWORD len;
 352     BYTE *buf;
 353     HMODULE16 hModule;
 354     HRSRC16 hRsrc;
 355     HGLOBAL16 hMem;
 356     BOOL do_free_library = FALSE;
 357
 358     TRACE("(%s,%p)\n", debugstr_a(filename), handle );
 359
 360     hModule = GetModuleHandle16(filename);
 361     if(hModule < 32)
 362     {
 363         hModule = LoadLibrary16(filename);
 364         do_free_library = TRUE;
 365     }
 366     if(hModule < 32)
 367     {
 368         WARN("Could not load %s\n", debugstr_a(filename));
 369         return 0;
 370     }
 371     hRsrc = FindResource16(hModule,
 372                           MAKEINTRESOURCEA(VS_VERSION_INFO),
 373                           MAKEINTRESOURCEA(VS_FILE_INFO));
 374     if(!hRsrc)
 375     {
 376         WARN("Could not find VS_VERSION_INFO in %s\n", debugstr_a(filename));
 377         if(do_free_library) FreeLibrary16(hModule);
 378         return 0xFFFFFFFF;
 379     }
 380     len = SizeofResource16(hModule, hRsrc);
 381     hMem = LoadResource16(hModule, hRsrc);
 382     if(!hMem)
 383     {
 384         WARN("Could not load VS_VERSION_INFO from %s\n", debugstr_a(filename));
 385         if(do_free_library) FreeLibrary16(hModule);
 386         return 0xFFFFFFFF;
 387     }
 388     buf = LockResource16(hMem);
 389
 390     if(!VersionInfoIs16(buf))
 391         goto END;
 392
 393     vffi = (VS_FIXEDFILEINFO *)VersionInfo16_Value( (VS_VERSION_INFO_STRUCT16 *)buf );
 394
 395     if ( vffi->dwSignature != VS_FFI_SIGNATURE )
 396     {
 397         WARN("vffi->dwSignature is 0x%08lx, but not 0x%08lx!\n",
 398                    vffi->dwSignature, VS_FFI_SIGNATURE );
 399         len = 0xFFFFFFFF;
 400         goto END;
 401     }
 402
 403     if ( TRACE_ON(ver) )
 404         print_vffi_debug( vffi );
 405
 406     if(data)
 407     {
 408         if(datasize >= len)
 409             memcpy(data, buf, len);
 410         else
 411             len = 0xFFFFFFFF;
 412     }
 413 END:
 414     FreeResource16(hMem);
 415     if(do_free_library) FreeLibrary16(hModule);
 416
 417     return len;
 418 }
 419
 420 /***********************************************************************
 421  *           GetFileVersionInfoSizeA         [VERSION.2]
 422  */
 423 DWORD WINAPI GetFileVersionInfoSizeA( LPCSTR filename, LPDWORD handle )
 424 {
 425     VS_FIXEDFILEINFO *vffi;
 426     DWORD len, ret, offset;
 427     BYTE buf[144];
 428
 429     TRACE("(%s,%p)\n", debugstr_a(filename), handle );
 430
 431     len = VERSION_GetFileVersionInfo_PE(filename, handle, 0, NULL);
 432     /* 0xFFFFFFFF means: file exists, but VERSION_INFO not found */
 433     if(len == 0xFFFFFFFF) return 0;
 434     if(len) return len;
 435     len = VERSION_GetFileVersionInfo_16(filename, handle, 0, NULL);
 436     /* 0xFFFFFFFF means: file exists, but VERSION_INFO not found */
 437     if(len == 0xFFFFFFFF) return 0;
 438     if(len) return len;
 439
 440     len = GetFileResourceSize16( filename,
 441                                  MAKEINTRESOURCEA(VS_FILE_INFO),
 442                                  MAKEINTRESOURCEA(VS_VERSION_INFO),
 443                                  &offset );
 444     if (!len) return 0;
 445
 446     ret = GetFileResource16( filename,
 447                              MAKEINTRESOURCEA(VS_FILE_INFO),
 448                              MAKEINTRESOURCEA(VS_VERSION_INFO),
 449                              offset, sizeof( buf ), buf );
 450     if (!ret) return 0;
 451
 452     if ( handle ) *handle = offset;
 453
 454     if ( VersionInfoIs16( buf ) )
 455         vffi = (VS_FIXEDFILEINFO *)VersionInfo16_Value( (VS_VERSION_INFO_STRUCT16 *)buf );
 456     else
 457         vffi = (VS_FIXEDFILEINFO *)VersionInfo32_Value( (VS_VERSION_INFO_STRUCT32 *)buf );
 458
 459     if ( vffi->dwSignature != VS_FFI_SIGNATURE )
 460     {
 461         WARN("vffi->dwSignature is 0x%08lx, but not 0x%08lx!\n",
 462                    vffi->dwSignature, VS_FFI_SIGNATURE );
 463         return 0;
 464     }
 465
 466     if ( ((VS_VERSION_INFO_STRUCT16 *)buf)->wLength < len )
 467         len = ((VS_VERSION_INFO_STRUCT16 *)buf)->wLength;
 468
 469     if ( TRACE_ON(ver) )
 470         print_vffi_debug( vffi );
 471
 472     return len;
 473 }
 474
 475 /***********************************************************************
 476  *           GetFileVersionInfoSizeW         [VERSION.3]
 477  */
 478 DWORD WINAPI GetFileVersionInfoSizeW( LPCWSTR filename, LPDWORD handle )
 479 {
 480     DWORD ret, len = WideCharToMultiByte( CP_ACP, 0, filename, -1, NULL, 0, NULL, NULL );
 481     LPSTR fn = HeapAlloc( GetProcessHeap(), 0, len );
 482     WideCharToMultiByte( CP_ACP, 0, filename, -1, fn, len, NULL, NULL );
 483     ret = GetFileVersionInfoSizeA( fn, handle );
 484     HeapFree( GetProcessHeap(), 0, fn );
 485     return ret;
 486 }
 487
 488 /***********************************************************************
 489  *           GetFileVersionInfoA             [VERSION.1]
 490  */
 491 BOOL WINAPI GetFileVersionInfoA( LPCSTR filename, DWORD handle,
 492                                     DWORD datasize, LPVOID data )
 493 {
 494     DWORD len;
 495
 496     TRACE("(%s,%ld,size=%ld,data=%p)\n",
 497                 debugstr_a(filename), handle, datasize, data );
 498
 499     len = VERSION_GetFileVersionInfo_PE(filename, &handle, datasize, data);
 500     /* 0xFFFFFFFF means: file exists, but VERSION_INFO not found */
 501     if(len == 0xFFFFFFFF) return FALSE;
 502     if(len)
 503         goto DO_CONVERT;
 504     len = VERSION_GetFileVersionInfo_16(filename, &handle, datasize, data);
 505     /* 0xFFFFFFFF means: file exists, but VERSION_INFO not found */
 506     if(len == 0xFFFFFFFF) return FALSE;
 507     if(len)
 508         goto DO_CONVERT;
 509
 510     if ( !GetFileResource16( filename, MAKEINTRESOURCEA(VS_FILE_INFO),
 511                                        MAKEINTRESOURCEA(VS_VERSION_INFO),
 512                                        handle, datasize, data ) )
 513         return FALSE;
 514 DO_CONVERT:
 515     if (    datasize >= sizeof(VS_VERSION_INFO_STRUCT16)
 516          && datasize >= ((VS_VERSION_INFO_STRUCT16 *)data)->wLength
 517          && !VersionInfoIs16( data ) )
 518     {
 519         /* convert resource from PE format to NE format */
 520         ConvertVersionInfo32To16( (VS_VERSION_INFO_STRUCT32 *)data,
 521                                   (VS_VERSION_INFO_STRUCT16 *)data );
 522     }
 523
 524     return TRUE;
 525 }
 526
 527 /***********************************************************************
 528  *           GetFileVersionInfoW             [VERSION.4]
 529  */
 530 BOOL WINAPI GetFileVersionInfoW( LPCWSTR filename, DWORD handle,
 531                                     DWORD datasize, LPVOID data )
 532 {
 533     DWORD len = WideCharToMultiByte( CP_ACP, 0, filename, -1, NULL, 0, NULL, NULL );
 534     LPSTR fn = HeapAlloc( GetProcessHeap(), 0, len );
 535     DWORD retv = TRUE;
 536
 537     WideCharToMultiByte( CP_ACP, 0, filename, -1, fn, len, NULL, NULL );
 538
 539     TRACE("(%s,%ld,size=%ld,data=%p)\n",
 540                 debugstr_w(filename), handle, datasize, data );
 541
 542     if(VERSION_GetFileVersionInfo_PE(fn, &handle, datasize, data))
 543         goto END;
 544     if(VERSION_GetFileVersionInfo_16(fn, &handle, datasize, data))
 545         goto END;
 546
 547     if ( !GetFileResource16( fn, MAKEINTRESOURCEA(VS_FILE_INFO),
 548                                  MAKEINTRESOURCEA(VS_VERSION_INFO),
 549                                  handle, datasize, data ) )
 550         retv = FALSE;
 551
 552     else if (    datasize >= sizeof(VS_VERSION_INFO_STRUCT16)
 553               && datasize >= ((VS_VERSION_INFO_STRUCT16 *)data)->wLength
 554               && VersionInfoIs16( data ) )
 555     {
 556         ERR("Cannot access NE resource in %s\n", debugstr_a(fn) );
 557         retv =  FALSE;
 558     }
 559 END:
 560     HeapFree( GetProcessHeap(), 0, fn );
 561     return retv;
 562 }
 563
 564
 565 /***********************************************************************
 566  *           VersionInfo16_FindChild             [internal]
 567  */
 568 static VS_VERSION_INFO_STRUCT16 *VersionInfo16_FindChild( VS_VERSION_INFO_STRUCT16 *info,
 569                                             LPCSTR szKey, UINT cbKey )
 570 {
 571     VS_VERSION_INFO_STRUCT16 *child = VersionInfo16_Children( info );
 572
 573     while ( (DWORD)child < (DWORD)info + info->wLength )
 574     {
 575         if ( !strncasecmp( child->szKey, szKey, cbKey ) )
 576             return child;
 577
 578         if (!(child->wLength)) return NULL;
 579         child = VersionInfo16_Next( child );
 580     }
 581
 582     return NULL;
 583 }
 584
 585 /***********************************************************************
 586  *           VersionInfo32_FindChild             [internal]
 587  */
 588 static VS_VERSION_INFO_STRUCT32 *VersionInfo32_FindChild( VS_VERSION_INFO_STRUCT32 *info,
 589                                             LPCWSTR szKey, UINT cbKey )
 590 {
 591     VS_VERSION_INFO_STRUCT32 *child = VersionInfo32_Children( info );
 592
 593     while ( (DWORD)child < (DWORD)info + info->wLength )
 594     {
 595         if ( !strncmpiW( child->szKey, szKey, cbKey ) )
 596             return child;
 597
 598         child = VersionInfo32_Next( child );
 599     }
 600
 601     return NULL;
 602 }
 603
 604 /***********************************************************************
 605  *           VerQueryValueA              [VERSION.12]
 606  */
 607 DWORD WINAPI VerQueryValueA( LPVOID pBlock, LPCSTR lpSubBlock,
 608                                LPVOID *lplpBuffer, UINT *puLen )
 609 {
 610     VS_VERSION_INFO_STRUCT16 *info = (VS_VERSION_INFO_STRUCT16 *)pBlock;
 611     if ( !VersionInfoIs16( info ) )
 612     {
 613         INT len;
 614         LPWSTR wide_str;
 615         DWORD give;
 616
 617         /* <lawson_whitney@juno.com> Feb 2001 */
 618         /* AOL 5.0 does this, expecting to get this: */
 619         len = MultiByteToWideChar(CP_ACP, 0, lpSubBlock, -1, NULL, 0);
 620         wide_str = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR));
 621         MultiByteToWideChar(CP_ACP, 0, lpSubBlock, -1, wide_str, len);
 622
 623         give = VerQueryValueW(pBlock, wide_str, lplpBuffer, puLen);
 624         HeapFree(GetProcessHeap(), 0, wide_str);
 625         return give;
 626     }
 627
 628     TRACE("(%p,%s,%p,%p)\n",
 629                 pBlock, debugstr_a(lpSubBlock), lplpBuffer, puLen );
 630
 631     while ( *lpSubBlock )
 632     {
 633         /* Find next path component */
 634         LPCSTR lpNextSlash;
 635         for ( lpNextSlash = lpSubBlock; *lpNextSlash; lpNextSlash++ )
 636             if ( *lpNextSlash == '\\' )
 637                 break;
 638
 639         /* Skip empty components */
 640         if ( lpNextSlash == lpSubBlock )
 641         {
 642             lpSubBlock++;
 643             continue;
 644         }
 645
 646         /* We have a non-empty component: search info for key */
 647         info = VersionInfo16_FindChild( info, lpSubBlock, lpNextSlash-lpSubBlock );
 648         if ( !info ) return FALSE;
 649
 650         /* Skip path component */
 651         lpSubBlock = lpNextSlash;
 652     }
 653
 654     /* Return value */
 655     *lplpBuffer = VersionInfo16_Value( info );
 656     *puLen = info->wValueLength;
 657
 658     return TRUE;
 659 }
 660
 661 /***********************************************************************
 662  *           VerQueryValueW              [VERSION.13]
 663  */
 664 DWORD WINAPI VerQueryValueW( LPVOID pBlock, LPCWSTR lpSubBlock,
 665                                LPVOID *lplpBuffer, UINT *puLen )
 666 {
 667     VS_VERSION_INFO_STRUCT32 *info = (VS_VERSION_INFO_STRUCT32 *)pBlock;
 668     if ( VersionInfoIs16( info ) )
 669     {
 670         ERR("called on NE resource!\n" );
 671         return FALSE;
 672     }
 673
 674     TRACE("(%p,%s,%p,%p)\n",
 675                 pBlock, debugstr_w(lpSubBlock), lplpBuffer, puLen );
 676
 677     while ( *lpSubBlock )
 678     {
 679         /* Find next path component */
 680         LPCWSTR 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 = VersionInfo32_FindChild( info, lpSubBlock, lpNextSlash-lpSubBlock );
 694         if ( !info ) return FALSE;
 695
 696         /* Skip path component */
 697         lpSubBlock = lpNextSlash;
 698     }
 699
 700     /* Return value */
 701     *lplpBuffer = VersionInfo32_Value( info );
 702     *puLen = info->wValueLength;
 703
 704     return TRUE;
 705 }
 706