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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  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 "winreg.h"
  32 #include "winver.h"
  33 #include "winternl.h"
  34 #include "wine/winuser16.h"
  35 #include "wine/unicode.h"
  36 #include "winerror.h"
  37 #include "wine/debug.h"
  38
  39 WINE_DEFAULT_DEBUG_CHANNEL(ver);
  40
  41 /******************************************************************************
  42  *
  43  *   This function will print via standard TRACE, debug info regarding
  44  *   the file info structure vffi.
  45  *      15-Feb-1998 Dimitrie Paun (dimi@cs.toronto.edu)
  46  *      Added this function to clean up the code.
  47  *
  48  *****************************************************************************/
  49 static void print_vffi_debug(VS_FIXEDFILEINFO *vffi)
  50 {
  51     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",
  52           HIWORD(vffi->dwStrucVersion),LOWORD(vffi->dwStrucVersion),
  53           HIWORD(vffi->dwFileVersionMS),LOWORD(vffi->dwFileVersionMS),
  54           HIWORD(vffi->dwFileVersionLS),LOWORD(vffi->dwFileVersionLS),
  55           HIWORD(vffi->dwProductVersionMS),LOWORD(vffi->dwProductVersionMS),
  56           HIWORD(vffi->dwProductVersionLS),LOWORD(vffi->dwProductVersionLS),
  57           vffi->dwFileFlagsMask,
  58           (vffi->dwFileFlags & VS_FF_DEBUG) ? "DEBUG," : "",
  59           (vffi->dwFileFlags & VS_FF_PRERELEASE) ? "PRERELEASE," : "",
  60           (vffi->dwFileFlags & VS_FF_PATCHED) ? "PATCHED," : "",
  61           (vffi->dwFileFlags & VS_FF_PRIVATEBUILD) ? "PRIVATEBUILD," : "",
  62           (vffi->dwFileFlags & VS_FF_INFOINFERRED) ? "INFOINFERRED," : "",
  63           (vffi->dwFileFlags & VS_FF_SPECIALBUILD) ? "SPECIALBUILD," : "");
  64
  65     TRACE("(");
  66
  67     TRACE("OS=0x%x.0x%x ", HIWORD(vffi->dwFileOS), LOWORD(vffi->dwFileOS));
  68
  69     switch (vffi->dwFileOS&0xFFFF0000)
  70     {
  71     case VOS_DOS:TRACE("DOS,");break;
  72     case VOS_OS216:TRACE("OS/2-16,");break;
  73     case VOS_OS232:TRACE("OS/2-32,");break;
  74     case VOS_NT:TRACE("NT,");break;
  75     case VOS_UNKNOWN:
  76     default:
  77         TRACE("UNKNOWN(0x%lx),",vffi->dwFileOS&0xFFFF0000);break;
  78     }
  79
  80     switch (LOWORD(vffi->dwFileOS))
  81     {
  82     case VOS__BASE:TRACE("BASE");break;
  83     case VOS__WINDOWS16:TRACE("WIN16");break;
  84     case VOS__WINDOWS32:TRACE("WIN32");break;
  85     case VOS__PM16:TRACE("PM16");break;
  86     case VOS__PM32:TRACE("PM32");break;
  87     default:
  88         TRACE("UNKNOWN(0x%x)",LOWORD(vffi->dwFileOS));break;
  89     }
  90
  91     TRACE(")\n");
  92
  93     switch (vffi->dwFileType)
  94     {
  95     case VFT_APP:TRACE("filetype=APP");break;
  96     case VFT_DLL:TRACE("filetype=DLL");break;
  97     case VFT_DRV:
  98         TRACE("filetype=DRV,");
  99         switch(vffi->dwFileSubtype)
 100         {
 101         case VFT2_DRV_PRINTER:TRACE("PRINTER");break;
 102         case VFT2_DRV_KEYBOARD:TRACE("KEYBOARD");break;
 103         case VFT2_DRV_LANGUAGE:TRACE("LANGUAGE");break;
 104         case VFT2_DRV_DISPLAY:TRACE("DISPLAY");break;
 105         case VFT2_DRV_MOUSE:TRACE("MOUSE");break;
 106         case VFT2_DRV_NETWORK:TRACE("NETWORK");break;
 107         case VFT2_DRV_SYSTEM:TRACE("SYSTEM");break;
 108         case VFT2_DRV_INSTALLABLE:TRACE("INSTALLABLE");break;
 109         case VFT2_DRV_SOUND:TRACE("SOUND");break;
 110         case VFT2_DRV_COMM:TRACE("COMM");break;
 111         case VFT2_DRV_INPUTMETHOD:TRACE("INPUTMETHOD");break;
 112         case VFT2_UNKNOWN:
 113         default:
 114             TRACE("UNKNOWN(0x%lx)",vffi->dwFileSubtype);break;
 115         }
 116         break;
 117     case VFT_FONT:
 118         TRACE("filetype=FONT,");
 119         switch (vffi->dwFileSubtype)
 120         {
 121         case VFT2_FONT_RASTER:TRACE("RASTER");break;
 122         case VFT2_FONT_VECTOR:TRACE("VECTOR");break;
 123         case VFT2_FONT_TRUETYPE:TRACE("TRUETYPE");break;
 124         default:TRACE("UNKNOWN(0x%lx)",vffi->dwFileSubtype);break;
 125         }
 126         break;
 127     case VFT_VXD:TRACE("filetype=VXD");break;
 128     case VFT_STATIC_LIB:TRACE("filetype=STATIC_LIB");break;
 129     case VFT_UNKNOWN:
 130     default:
 131         TRACE("filetype=Unknown(0x%lx)",vffi->dwFileType);break;
 132     }
 133
 134     TRACE("\n");
 135     TRACE("filedate=0x%lx.0x%lx\n",vffi->dwFileDateMS,vffi->dwFileDateLS);
 136 }
 137
 138 /***********************************************************************
 139  * Version Info Structure
 140  */
 141
 142 typedef struct
 143 {
 144     WORD  wLength;
 145     WORD  wValueLength;
 146     CHAR  szKey[1];
 147 #if 0   /* variable length structure */
 148     /* DWORD aligned */
 149     BYTE  Value[];
 150     /* DWORD aligned */
 151     VS_VERSION_INFO_STRUCT16 Children[];
 152 #endif
 153 } VS_VERSION_INFO_STRUCT16;
 154
 155 typedef struct
 156 {
 157     WORD  wLength;
 158     WORD  wValueLength;
 159     WORD  wType;
 160     WCHAR szKey[1];
 161 #if 0   /* variable length structure */
 162     /* DWORD aligned */
 163     BYTE  Value[];
 164     /* DWORD aligned */
 165     VS_VERSION_INFO_STRUCT32 Children[];
 166 #endif
 167 } VS_VERSION_INFO_STRUCT32;
 168
 169 #define VersionInfoIs16( ver ) \
 170     ( ((VS_VERSION_INFO_STRUCT16 *)ver)->szKey[0] >= ' ' )
 171
 172 #define DWORD_ALIGN( base, ptr ) \
 173     ( (LPBYTE)(base) + ((((LPBYTE)(ptr) - (LPBYTE)(base)) + 3) & ~3) )
 174
 175 #define VersionInfo16_Value( ver )  \
 176     DWORD_ALIGN( (ver), (ver)->szKey + strlen((ver)->szKey) + 1 )
 177 #define VersionInfo32_Value( ver )  \
 178     DWORD_ALIGN( (ver), (ver)->szKey + strlenW((ver)->szKey) + 1 )
 179
 180 #define VersionInfo16_Children( ver )  \
 181     (VS_VERSION_INFO_STRUCT16 *)( VersionInfo16_Value( ver ) + \
 182                            ( ( (ver)->wValueLength + 3 ) & ~3 ) )
 183 #define VersionInfo32_Children( ver )  \
 184     (VS_VERSION_INFO_STRUCT32 *)( VersionInfo32_Value( ver ) + \
 185                            ( ( (ver)->wValueLength * \
 186                                ((ver)->wType? 2 : 1) + 3 ) & ~3 ) )
 187
 188 #define VersionInfo16_Next( ver ) \
 189     (VS_VERSION_INFO_STRUCT16 *)( (LPBYTE)ver + (((ver)->wLength + 3) & ~3) )
 190 #define VersionInfo32_Next( ver ) \
 191     (VS_VERSION_INFO_STRUCT32 *)( (LPBYTE)ver + (((ver)->wLength + 3) & ~3) )
 192
 193 /***********************************************************************
 194  *           VERSION_GetFileVersionInfo_PE             [internal]
 195  *
 196  *    NOTE: returns size of the PE VERSION resource or 0xFFFFFFFF
 197  *    in the case the file is a PE module, but VERSION_INFO not found.
 198  */
 199 static DWORD VERSION_GetFileVersionInfo_PE( LPCWSTR filename, DWORD datasize, LPVOID data )
 200 {
 201     VS_FIXEDFILEINFO *vffi;
 202     DWORD len;
 203     BYTE *buf;
 204     HMODULE hModule;
 205     HRSRC hRsrc;
 206     HGLOBAL hMem;
 207
 208     TRACE("%s\n", debugstr_w(filename));
 209
 210     hModule = GetModuleHandleW(filename);
 211     if(!hModule)
 212         hModule = LoadLibraryExW(filename, 0, LOAD_LIBRARY_AS_DATAFILE);
 213     else
 214         hModule = LoadLibraryExW(filename, 0, 0);
 215     if(!hModule)
 216     {
 217         WARN("Could not load %s\n", debugstr_w(filename));
 218         return 0;
 219     }
 220     hRsrc = FindResourceW(hModule,
 221                           MAKEINTRESOURCEW(VS_VERSION_INFO),
 222                           MAKEINTRESOURCEW(VS_FILE_INFO));
 223     if(!hRsrc)
 224     {
 225         WARN("Could not find VS_VERSION_INFO in %s\n", debugstr_w(filename));
 226         FreeLibrary(hModule);
 227         return 0xFFFFFFFF;
 228     }
 229     len = SizeofResource(hModule, hRsrc);
 230     hMem = LoadResource(hModule, hRsrc);
 231     if(!hMem)
 232     {
 233         WARN("Could not load VS_VERSION_INFO from %s\n", debugstr_w(filename));
 234         FreeLibrary(hModule);
 235         return 0xFFFFFFFF;
 236     }
 237     buf = LockResource(hMem);
 238
 239     vffi = (VS_FIXEDFILEINFO *)VersionInfo32_Value( (VS_VERSION_INFO_STRUCT32 *)buf );
 240
 241     if ( vffi->dwSignature != VS_FFI_SIGNATURE )
 242     {
 243         WARN("vffi->dwSignature is 0x%08lx, but not 0x%08lx!\n",
 244                    vffi->dwSignature, VS_FFI_SIGNATURE );
 245         len = 0xFFFFFFFF;
 246         goto END;
 247     }
 248
 249     if ( TRACE_ON(ver) )
 250         print_vffi_debug( vffi );
 251
 252     if(data)
 253     {
 254         if(datasize < len)
 255             len = datasize; /* truncate data */
 256         if(len)
 257             memcpy(data, buf, len);
 258         else
 259             len = 0xFFFFFFFF;
 260     }
 261 END:
 262     FreeResource(hMem);
 263     FreeLibrary(hModule);
 264
 265     return len;
 266 }
 267
 268 /***********************************************************************
 269  *           VERSION_GetFileVersionInfo_16             [internal]
 270  *
 271  *    NOTE: returns size of the 16-bit VERSION resource or 0xFFFFFFFF
 272  *    in the case the file exists, but VERSION_INFO not found.
 273  */
 274 static DWORD VERSION_GetFileVersionInfo_16( LPCSTR filename, DWORD datasize, LPVOID data )
 275 {
 276     VS_FIXEDFILEINFO *vffi;
 277     DWORD len, offset;
 278     BYTE *buf;
 279     HMODULE16 hModule;
 280     HRSRC16 hRsrc;
 281     HGLOBAL16 hMem;
 282     char dllname[20], owner[20], *p;
 283     const char *basename;
 284     BOOL is_builtin = FALSE;
 285
 286     TRACE("%s\n", debugstr_a(filename));
 287
 288     /* strip path information */
 289
 290     basename = filename;
 291     if (basename[0] && basename[1] == ':') basename += 2;  /* strip drive specification */
 292     if ((p = strrchr( basename, '\\' ))) basename = p + 1;
 293     if ((p = strrchr( basename, '/' ))) basename = p + 1;
 294
 295     if (strlen(basename) < sizeof(dllname)-4)
 296     {
 297         int file_exists;
 298
 299         strcpy( dllname, basename );
 300         p = strrchr( dllname, '.' );
 301         if (!p) strcat( dllname, ".dll" );
 302         for (p = dllname; *p; p++) if (*p >= 'A' && *p <= 'Z') *p += 32;
 303
 304         if (wine_dll_get_owner( dllname, owner, sizeof(owner), &file_exists ) == 0)
 305             is_builtin = TRUE;
 306     }
 307
 308     /* first try without loading a 16-bit module */
 309     if (is_builtin)
 310         len = 0;
 311     else
 312         len = GetFileResourceSize16( filename,
 313                                      MAKEINTRESOURCEA(VS_FILE_INFO),
 314                                      MAKEINTRESOURCEA(VS_VERSION_INFO),
 315                                      &offset );
 316     if (len)
 317     {
 318         if (!data) return len;
 319
 320         len = GetFileResource16( filename,
 321                                  MAKEINTRESOURCEA(VS_FILE_INFO),
 322                                  MAKEINTRESOURCEA(VS_VERSION_INFO),
 323                                  offset, datasize, data );
 324         if (len)
 325         {
 326             vffi = (VS_FIXEDFILEINFO *)VersionInfo16_Value( (VS_VERSION_INFO_STRUCT16 *)data );
 327
 328             if ( vffi->dwSignature == VS_FFI_SIGNATURE )
 329             {
 330                 if ( ((VS_VERSION_INFO_STRUCT16 *)data)->wLength < len )
 331                     len = ((VS_VERSION_INFO_STRUCT16 *)data)->wLength;
 332
 333                 if ( TRACE_ON(ver) )
 334                     print_vffi_debug( vffi );
 335
 336                 return len;
 337             }
 338         }
 339     }
 340
 341     /* this might be a builtin 16-bit module */
 342     hModule = LoadLibrary16(filename);
 343     if(hModule < 32)
 344     {
 345         WARN("Could not load %s\n", debugstr_a(filename));
 346         return 0;
 347     }
 348     hRsrc = FindResource16(hModule,
 349                           MAKEINTRESOURCEA(VS_VERSION_INFO),
 350                           MAKEINTRESOURCEA(VS_FILE_INFO));
 351     if(!hRsrc)
 352     {
 353         WARN("Could not find VS_VERSION_INFO in %s\n", debugstr_a(filename));
 354         FreeLibrary16(hModule);
 355         return 0xFFFFFFFF;
 356     }
 357     len = SizeofResource16(hModule, hRsrc);
 358     hMem = LoadResource16(hModule, hRsrc);
 359     if(!hMem)
 360     {
 361         WARN("Could not load VS_VERSION_INFO from %s\n", debugstr_a(filename));
 362         FreeLibrary16(hModule);
 363         return 0xFFFFFFFF;
 364     }
 365     buf = LockResource16(hMem);
 366
 367     if(!VersionInfoIs16(buf))
 368     {
 369         len = 0xFFFFFFFF;
 370         goto END;
 371     }
 372
 373     vffi = (VS_FIXEDFILEINFO *)VersionInfo16_Value( (VS_VERSION_INFO_STRUCT16 *)buf );
 374
 375     if ( vffi->dwSignature != VS_FFI_SIGNATURE )
 376     {
 377         WARN("vffi->dwSignature is 0x%08lx, but not 0x%08lx!\n",
 378                    vffi->dwSignature, VS_FFI_SIGNATURE );
 379         len = 0xFFFFFFFF;
 380         goto END;
 381     }
 382
 383     if ( TRACE_ON(ver) )
 384         print_vffi_debug( vffi );
 385
 386     if(data)
 387     {
 388         if(datasize < len)
 389             len = datasize; /* truncate data */
 390         if(len)
 391             memcpy(data, buf, len);
 392         else
 393             len = 0xFFFFFFFF;
 394     }
 395 END:
 396     FreeResource16(hMem);
 397     FreeLibrary16(hModule);
 398
 399     return len;
 400 }
 401
 402 /***********************************************************************
 403  *           GetFileVersionInfoSizeW         [VERSION.@]
 404  */
 405 DWORD WINAPI GetFileVersionInfoSizeW( LPCWSTR filename, LPDWORD handle )
 406 {
 407     DWORD len;
 408
 409     TRACE("(%s,%p)\n", debugstr_w(filename), handle );
 410
 411     if (handle) *handle = 0;
 412
 413     if (!filename)
 414     {
 415         SetLastError(ERROR_INVALID_PARAMETER);
 416         return 0;
 417     }
 418     if (!*filename)
 419     {
 420         SetLastError(ERROR_BAD_PATHNAME);
 421         return 0;
 422     }
 423
 424     len = VERSION_GetFileVersionInfo_PE(filename, 0, NULL);
 425     /* 0xFFFFFFFF means: file is a PE module, but VERSION_INFO not found */
 426     if(len == 0xFFFFFFFF)
 427     {
 428         SetLastError(ERROR_RESOURCE_DATA_NOT_FOUND);
 429         return 0;
 430     }
 431
 432     if (!len)
 433     {
 434         LPSTR filenameA;
 435
 436         len = WideCharToMultiByte( CP_ACP, 0, filename, -1, NULL, 0, NULL, NULL );
 437         filenameA = HeapAlloc( GetProcessHeap(), 0, len );
 438         WideCharToMultiByte( CP_ACP, 0, filename, -1, filenameA, len, NULL, NULL );
 439
 440         len = VERSION_GetFileVersionInfo_16(filenameA, 0, NULL);
 441         HeapFree( GetProcessHeap(), 0, filenameA );
 442         /* 0xFFFFFFFF means: file exists, but VERSION_INFO not found */
 443         if (!len)
 444         {
 445             SetLastError(ERROR_FILE_NOT_FOUND);
 446             return 0;
 447         }
 448         if (len == 0xFFFFFFFF)
 449         {
 450             SetLastError(ERROR_RESOURCE_DATA_NOT_FOUND);
 451             return 0;
 452         }
 453
 454         /* We have a 16bit resource.
 455          *
 456          * XP/W2K/W2K3 uses a buffer which is more than the actual needed space:
 457          *
 458          * (info->wLength - sizeof(VS_FIXEDFILEINFO)) * 4
 459          *
 460          * This extra buffer is used for ANSI to Unicode conversions in W-Calls.
 461          * info->wLength should be the same as len. Currently it isn't but that
 462          * doesn't seem to be a problem (len is bigger then info->wLength).
 463          */
 464          len = (len - sizeof(VS_FIXEDFILEINFO)) * 4;
 465     }
 466     else
 467     {
 468         /* We have a 32bit resource.
 469          *
 470          * XP/W2K/W2K3 uses a buffer which is 2 times the actual needed space + 4 bytes "FE2X"
 471          * This extra buffer is used for Unicode to ANSI conversions in A-Calls
 472          */
 473          len = (len * 2) + 4;
 474     }
 475
 476     SetLastError(0);
 477     return len;
 478 }
 479
 480 /***********************************************************************
 481  *           GetFileVersionInfoSizeA         [VERSION.@]
 482  */
 483 DWORD WINAPI GetFileVersionInfoSizeA( LPCSTR filename, LPDWORD handle )
 484 {
 485     UNICODE_STRING filenameW;
 486     DWORD retval;
 487
 488     TRACE("(%s,%p)\n", debugstr_a(filename), handle );
 489
 490     if(filename)
 491         RtlCreateUnicodeStringFromAsciiz(&filenameW, filename);
 492     else
 493         filenameW.Buffer = NULL;
 494
 495     retval = GetFileVersionInfoSizeW(filenameW.Buffer, handle);
 496
 497     RtlFreeUnicodeString(&filenameW);
 498
 499     return retval;
 500 }
 501
 502 /***********************************************************************
 503  *           GetFileVersionInfoW             [VERSION.@]
 504  */
 505 BOOL WINAPI GetFileVersionInfoW( LPCWSTR filename, DWORD handle,
 506                                     DWORD datasize, LPVOID data )
 507 {
 508     DWORD len;
 509     VS_VERSION_INFO_STRUCT32* vvis = (VS_VERSION_INFO_STRUCT32*)data;
 510
 511     TRACE("(%s,%ld,size=%ld,data=%p)\n",
 512                 debugstr_w(filename), handle, datasize, data );
 513
 514     if (!data)
 515     {
 516         SetLastError(ERROR_INVALID_DATA);
 517         return FALSE;
 518     }
 519     len = VERSION_GetFileVersionInfo_PE(filename, datasize, data);
 520     /* 0xFFFFFFFF means: file is a PE module, but VERSION_INFO not found */
 521     if (len == 0xFFFFFFFF)
 522     {
 523         SetLastError(ERROR_RESOURCE_DATA_NOT_FOUND);
 524         return FALSE;
 525     }
 526
 527     if (!len)
 528     {
 529         LPSTR filenameA;
 530
 531         len = WideCharToMultiByte( CP_ACP, 0, filename, -1, NULL, 0, NULL, NULL );
 532         filenameA = HeapAlloc( GetProcessHeap(), 0, len );
 533         WideCharToMultiByte( CP_ACP, 0, filename, -1, filenameA, len, NULL, NULL );
 534
 535         len = VERSION_GetFileVersionInfo_16(filenameA, datasize, data);
 536         HeapFree( GetProcessHeap(), 0, filenameA );
 537         /* 0xFFFFFFFF means: file exists, but VERSION_INFO not found */
 538         if (!len || len == 0xFFFFFFFF)
 539         {
 540             SetLastError(ERROR_RESOURCE_DATA_NOT_FOUND);
 541             return FALSE;
 542         }
 543         /* We have a 16bit resource. */
 544     }
 545     else
 546     {
 547         DWORD convbuf;
 548
 549         /* We have a 32bit resource.
 550          *
 551          * XP/W2K/W2K3 uses a buffer which is 2 times the actual needed space + 4 bytes "FE2X"
 552          * This extra buffer is used for Unicode to ANSI conversions in A-Calls
 553          */
 554
 555         convbuf = datasize - vvis->wLength;
 556         memcpy( ((char*)(data))+vvis->wLength, "FE2X", convbuf > 4 ? 4 : convbuf );
 557     }
 558
 559     SetLastError(0);
 560     return TRUE;
 561 }
 562
 563 /***********************************************************************
 564  *           GetFileVersionInfoA             [VERSION.@]
 565  */
 566 BOOL WINAPI GetFileVersionInfoA( LPCSTR filename, DWORD handle,
 567                                     DWORD datasize, LPVOID data )
 568 {
 569     UNICODE_STRING filenameW;
 570     BOOL retval;
 571
 572     TRACE("(%s,%ld,size=%ld,data=%p)\n",
 573                 debugstr_a(filename), handle, datasize, data );
 574
 575     if(filename)
 576         RtlCreateUnicodeStringFromAsciiz(&filenameW, filename);
 577     else
 578         filenameW.Buffer = NULL;
 579
 580     retval = GetFileVersionInfoW(filenameW.Buffer, handle, datasize, data);
 581
 582     RtlFreeUnicodeString(&filenameW);
 583
 584     return retval;
 585 }
 586
 587 /***********************************************************************
 588  *           VersionInfo16_FindChild             [internal]
 589  */
 590 static VS_VERSION_INFO_STRUCT16 *VersionInfo16_FindChild( VS_VERSION_INFO_STRUCT16 *info,
 591                                             LPCSTR szKey, UINT cbKey )
 592 {
 593     VS_VERSION_INFO_STRUCT16 *child = VersionInfo16_Children( info );
 594
 595     while ((char *)child < (char *)info + info->wLength )
 596     {
 597         if ( !strncasecmp( child->szKey, szKey, cbKey ) )
 598             return child;
 599
 600         if (!(child->wLength)) return NULL;
 601         child = VersionInfo16_Next( child );
 602     }
 603
 604     return NULL;
 605 }
 606
 607 /***********************************************************************
 608  *           VersionInfo32_FindChild             [internal]
 609  */
 610 static VS_VERSION_INFO_STRUCT32 *VersionInfo32_FindChild( VS_VERSION_INFO_STRUCT32 *info,
 611                                             LPCWSTR szKey, UINT cbKey )
 612 {
 613     VS_VERSION_INFO_STRUCT32 *child = VersionInfo32_Children( info );
 614
 615     while ((char *)child < (char *)info + info->wLength )
 616     {
 617         if ( !strncmpiW( child->szKey, szKey, cbKey ) )
 618             return child;
 619
 620         child = VersionInfo32_Next( child );
 621     }
 622
 623     return NULL;
 624 }
 625
 626 /***********************************************************************
 627  *           VersionInfo16_QueryValue              [internal]
 628  *
 629  *    Gets a value from a 16-bit NE resource
 630  */
 631 static BOOL WINAPI VersionInfo16_QueryValue( VS_VERSION_INFO_STRUCT16 *info, LPCSTR lpSubBlock,
 632                                LPVOID *lplpBuffer, UINT *puLen )
 633 {
 634     while ( *lpSubBlock )
 635     {
 636         /* Find next path component */
 637         LPCSTR lpNextSlash;
 638         for ( lpNextSlash = lpSubBlock; *lpNextSlash; lpNextSlash++ )
 639             if ( *lpNextSlash == '\\' )
 640                 break;
 641
 642         /* Skip empty components */
 643         if ( lpNextSlash == lpSubBlock )
 644         {
 645             lpSubBlock++;
 646             continue;
 647         }
 648
 649         /* We have a non-empty component: search info for key */
 650         info = VersionInfo16_FindChild( info, lpSubBlock, lpNextSlash-lpSubBlock );
 651         if ( !info ) return FALSE;
 652
 653         /* Skip path component */
 654         lpSubBlock = lpNextSlash;
 655     }
 656
 657     /* Return value */
 658     *lplpBuffer = VersionInfo16_Value( info );
 659     if (puLen)
 660         *puLen = info->wValueLength;
 661
 662     return TRUE;
 663 }
 664
 665 /***********************************************************************
 666  *           VersionInfo32_QueryValue              [internal]
 667  *
 668  *    Gets a value from a 32-bit PE resource
 669  */
 670 static BOOL WINAPI VersionInfo32_QueryValue( VS_VERSION_INFO_STRUCT32 *info, LPCWSTR lpSubBlock,
 671                                LPVOID *lplpBuffer, UINT *puLen )
 672 {
 673     TRACE("lpSubBlock : (%s)\n", debugstr_w(lpSubBlock));
 674
 675     while ( *lpSubBlock )
 676     {
 677         /* Find next path component */
 678         LPCWSTR lpNextSlash;
 679         for ( lpNextSlash = lpSubBlock; *lpNextSlash; lpNextSlash++ )
 680             if ( *lpNextSlash == '\\' )
 681                 break;
 682
 683         /* Skip empty components */
 684         if ( lpNextSlash == lpSubBlock )
 685         {
 686             lpSubBlock++;
 687             continue;
 688         }
 689
 690         /* We have a non-empty component: search info for key */
 691         info = VersionInfo32_FindChild( info, lpSubBlock, lpNextSlash-lpSubBlock );
 692         if ( !info ) return FALSE;
 693
 694         /* Skip path component */
 695         lpSubBlock = lpNextSlash;
 696     }
 697
 698     /* Return value */
 699     *lplpBuffer = VersionInfo32_Value( info );
 700     if (puLen)
 701         *puLen = info->wValueLength;
 702
 703     return TRUE;
 704 }
 705
 706 /***********************************************************************
 707  *           VerQueryValueA              [VERSION.@]
 708  */
 709 BOOL WINAPI VerQueryValueA( LPVOID pBlock, LPCSTR lpSubBlock,
 710                                LPVOID *lplpBuffer, UINT *puLen )
 711 {
 712     static const char rootA[] = "\\";
 713     static const char varfileinfoA[] = "\\VarFileInfo\\Translation";
 714     VS_VERSION_INFO_STRUCT16 *info = (VS_VERSION_INFO_STRUCT16 *)pBlock;
 715
 716     TRACE("(%p,%s,%p,%p)\n",
 717                 pBlock, debugstr_a(lpSubBlock), lplpBuffer, puLen );
 718
 719     if ( !VersionInfoIs16( info ) )
 720     {
 721         BOOL ret;
 722         INT len;
 723         LPWSTR lpSubBlockW;
 724
 725         len  = MultiByteToWideChar(CP_ACP, 0, lpSubBlock, -1, NULL, 0);
 726         lpSubBlockW = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR));
 727
 728         if (!lpSubBlockW)
 729             return FALSE;
 730
 731         MultiByteToWideChar(CP_ACP, 0, lpSubBlock, -1, lpSubBlockW, len);
 732
 733         ret = VersionInfo32_QueryValue(pBlock, lpSubBlockW, lplpBuffer, puLen);
 734
 735         HeapFree(GetProcessHeap(), 0, lpSubBlockW);
 736
 737         if (ret && strcasecmp( lpSubBlock, rootA ) && strcasecmp( lpSubBlock, varfileinfoA ))
 738         {
 739             LPSTR lpBufferA = (LPSTR)pBlock + info->wLength + 4;
 740             DWORD pos = (LPSTR)*lplpBuffer - (LPSTR)pBlock;
 741
 742             len = WideCharToMultiByte(CP_ACP, 0, (LPCWSTR)*lplpBuffer, -1,
 743                                       lpBufferA + pos, info->wLength - pos, NULL, NULL);
 744             *lplpBuffer = lpBufferA + pos;
 745             *puLen = len;
 746         }
 747         return ret;
 748     }
 749
 750     return VersionInfo16_QueryValue(info, lpSubBlock, lplpBuffer, puLen);
 751 }
 752
 753 /***********************************************************************
 754  *           VerQueryValueW              [VERSION.@]
 755  */
 756 BOOL WINAPI VerQueryValueW( LPVOID pBlock, LPCWSTR lpSubBlock,
 757                                LPVOID *lplpBuffer, UINT *puLen )
 758 {
 759     static const WCHAR rootW[] = { '\\', 0 };
 760     static const WCHAR varfileinfoW[] = { '\\','V','a','r','F','i','l','e','I','n','f','o',
 761                                           '\\','T','r','a','n','s','l','a','t','i','o','n', 0 };
 762
 763     VS_VERSION_INFO_STRUCT32 *info = (VS_VERSION_INFO_STRUCT32 *)pBlock;
 764
 765     TRACE("(%p,%s,%p,%p)\n",
 766                 pBlock, debugstr_w(lpSubBlock), lplpBuffer, puLen );
 767
 768     if ( VersionInfoIs16( info ) )
 769     {
 770         BOOL ret;
 771         int len;
 772         LPSTR lpSubBlockA;
 773
 774         len = WideCharToMultiByte(CP_ACP, 0, lpSubBlock, -1, NULL, 0, NULL, NULL);
 775         lpSubBlockA = HeapAlloc(GetProcessHeap(), 0, len * sizeof(char));
 776
 777         if (!lpSubBlockA)
 778             return FALSE;
 779
 780         WideCharToMultiByte(CP_ACP, 0, lpSubBlock, -1, lpSubBlockA, len, NULL, NULL);
 781
 782         ret = VersionInfo16_QueryValue(pBlock, lpSubBlockA, lplpBuffer, puLen);
 783
 784         HeapFree(GetProcessHeap(), 0, lpSubBlockA);
 785
 786         if (ret && strcmpiW( lpSubBlock, rootW ) && strcmpiW( lpSubBlock, varfileinfoW ))
 787         {
 788             LPWSTR lpBufferW = (LPWSTR)((LPSTR)pBlock + info->wLength);
 789             DWORD pos = (LPSTR)*lplpBuffer - (LPSTR)pBlock;
 790             DWORD max = (info->wLength - sizeof(VS_FIXEDFILEINFO)) * 4 - info->wLength;
 791
 792             len = MultiByteToWideChar(CP_ACP, 0, (LPCSTR)*lplpBuffer, -1,
 793                                       lpBufferW + pos, max/sizeof(WCHAR) - pos );
 794             *lplpBuffer = lpBufferW + pos;
 795             *puLen = len;
 796         }
 797         return ret;
 798     }
 799
 800     return VersionInfo32_QueryValue(info, lpSubBlock, lplpBuffer, puLen);
 801 }