dlls/version/resource.c

   1 /*
   2  * Implementation of VERSION.DLL - Resource Access routines
   3  *
   4  * Copyright 1996,1997 Marcus Meissner
   5  * Copyright 1997 David Cuthbert
   6  * Copyright 1999 Ulrich Weigand
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  */
  22
  23 #include "config.h"
  24
  25 #include <stdarg.h>
  26 #include <stdio.h>
  27 #include <stdlib.h>
  28 #include <string.h>
  29 #include <sys/types.h>
  30 #ifdef HAVE_UNISTD_H
  31 # include <unistd.h>
  32 #endif
  33
  34 #define NONAMELESSUNION
  35 #define NONAMELESSSTRUCT
  36 #include "windef.h"
  37 #include "winbase.h"
  38 #include "lzexpand.h"
  39
  40 #include "wine/unicode.h"
  41 #include "wine/winbase16.h"
  42 #include "wine/winuser16.h"
  43 #include "winver.h"
  44
  45 #include "wine/debug.h"
  46
  47 WINE_DEFAULT_DEBUG_CHANNEL(ver);
  48
  49
  50 /**********************************************************************
  51  *  find_entry_by_id
  52  *
  53  * Find an entry by id in a resource directory
  54  * Copied from loader/pe_resource.c
  55  */
  56 static const IMAGE_RESOURCE_DIRECTORY *find_entry_by_id( const IMAGE_RESOURCE_DIRECTORY *dir,
  57                                                          WORD id, const void *root )
  58 {
  59     const IMAGE_RESOURCE_DIRECTORY_ENTRY *entry;
  60     int min, max, pos;
  61
  62     entry = (const IMAGE_RESOURCE_DIRECTORY_ENTRY *)(dir + 1);
  63     min = dir->NumberOfNamedEntries;
  64     max = min + dir->NumberOfIdEntries - 1;
  65     while (min <= max)
  66     {
  67         pos = (min + max) / 2;
  68         if (entry[pos].u1.s2.Id == id)
  69             return (IMAGE_RESOURCE_DIRECTORY *)((char *)root + entry[pos].u2.s3.OffsetToDirectory);
  70         if (entry[pos].u1.s2.Id > id) max = pos - 1;
  71         else min = pos + 1;
  72     }
  73     return NULL;
  74 }
  75
  76
  77 /**********************************************************************
  78  *  find_entry_default
  79  *
  80  * Find a default entry in a resource directory
  81  * Copied from loader/pe_resource.c
  82  */
  83 static const IMAGE_RESOURCE_DIRECTORY *find_entry_default( const IMAGE_RESOURCE_DIRECTORY *dir,
  84                                                            const void *root )
  85 {
  86     const IMAGE_RESOURCE_DIRECTORY_ENTRY *entry;
  87
  88     entry = (const IMAGE_RESOURCE_DIRECTORY_ENTRY *)(dir + 1);
  89     return (IMAGE_RESOURCE_DIRECTORY *)((char *)root + entry->u2.s3.OffsetToDirectory);
  90 }
  91
  92
  93 /**********************************************************************
  94  *  find_entry_by_name
  95  *
  96  * Find an entry by name in a resource directory
  97  * Copied from loader/pe_resource.c
  98  */
  99 static const IMAGE_RESOURCE_DIRECTORY *find_entry_by_name( const IMAGE_RESOURCE_DIRECTORY *dir,
 100                                                            LPCSTR name, const void *root )
 101 {
 102     const IMAGE_RESOURCE_DIRECTORY *ret = NULL;
 103     LPWSTR nameW;
 104     DWORD namelen;
 105
 106     if (!HIWORD(name)) return find_entry_by_id( dir, LOWORD(name), root );
 107     if (name[0] == '#')
 108     {
 109         return find_entry_by_id( dir, atoi(name+1), root );
 110     }
 111
 112     namelen = MultiByteToWideChar( CP_ACP, 0, name, -1, NULL, 0 );
 113     if ((nameW = HeapAlloc( GetProcessHeap(), 0, namelen * sizeof(WCHAR) )))
 114     {
 115         const IMAGE_RESOURCE_DIRECTORY_ENTRY *entry;
 116         const IMAGE_RESOURCE_DIR_STRING_U *str;
 117         int min, max, res, pos;
 118
 119         MultiByteToWideChar( CP_ACP, 0, name, -1, nameW, namelen );
 120         namelen--;  /* remove terminating null */
 121         entry = (const IMAGE_RESOURCE_DIRECTORY_ENTRY *)(dir + 1);
 122         min = 0;
 123         max = dir->NumberOfNamedEntries - 1;
 124         while (min <= max)
 125         {
 126             pos = (min + max) / 2;
 127             str = (IMAGE_RESOURCE_DIR_STRING_U *)((char *)root + entry[pos].u1.s1.NameOffset);
 128             res = strncmpiW( nameW, str->NameString, str->Length );
 129             if (!res && namelen == str->Length)
 130             {
 131                 ret = (IMAGE_RESOURCE_DIRECTORY *)((char *)root + entry[pos].u2.s3.OffsetToDirectory);
 132                 break;
 133             }
 134             if (res < 0) max = pos - 1;
 135             else min = pos + 1;
 136         }
 137         HeapFree( GetProcessHeap(), 0, nameW );
 138     }
 139     return ret;
 140 }
 141
 142
 143 /***********************************************************************
 144  *           read_xx_header         [internal]
 145  */
 146 static int read_xx_header( HFILE lzfd )
 147 {
 148     IMAGE_DOS_HEADER mzh;
 149     char magic[3];
 150
 151     LZSeek( lzfd, 0, SEEK_SET );
 152     if ( sizeof(mzh) != LZRead( lzfd, (LPSTR)&mzh, sizeof(mzh) ) )
 153         return 0;
 154     if ( mzh.e_magic != IMAGE_DOS_SIGNATURE )
 155         return 0;
 156
 157     LZSeek( lzfd, mzh.e_lfanew, SEEK_SET );
 158     if ( 2 != LZRead( lzfd, magic, 2 ) )
 159         return 0;
 160
 161     LZSeek( lzfd, mzh.e_lfanew, SEEK_SET );
 162
 163     if ( magic[0] == 'N' && magic[1] == 'E' )
 164         return IMAGE_OS2_SIGNATURE;
 165     if ( magic[0] == 'P' && magic[1] == 'E' )
 166         return IMAGE_NT_SIGNATURE;
 167
 168     magic[2] = '\0';
 169     WARN("Can't handle %s files.\n", magic );
 170     return 0;
 171 }
 172
 173 /***********************************************************************
 174  *           load_ne_resource         [internal]
 175  */
 176 static BOOL find_ne_resource( HFILE lzfd, LPCSTR typeid, LPCSTR resid,
 177                                 DWORD *resLen, DWORD *resOff )
 178 {
 179     IMAGE_OS2_HEADER nehd;
 180     NE_TYPEINFO *typeInfo;
 181     NE_NAMEINFO *nameInfo;
 182     DWORD nehdoffset;
 183     LPBYTE resTab;
 184     DWORD resTabSize;
 185     int count;
 186
 187     /* Read in NE header */
 188     nehdoffset = LZSeek( lzfd, 0, SEEK_CUR );
 189     if ( sizeof(nehd) != LZRead( lzfd, (LPSTR)&nehd, sizeof(nehd) ) ) return 0;
 190
 191     resTabSize = nehd.ne_restab - nehd.ne_rsrctab;
 192     if ( !resTabSize )
 193     {
 194         TRACE("No resources in NE dll\n" );
 195         return FALSE;
 196     }
 197
 198     /* Read in resource table */
 199     resTab = HeapAlloc( GetProcessHeap(), 0, resTabSize );
 200     if ( !resTab ) return FALSE;
 201
 202     LZSeek( lzfd, nehd.ne_rsrctab + nehdoffset, SEEK_SET );
 203     if ( resTabSize != LZRead( lzfd, resTab, resTabSize ) )
 204     {
 205         HeapFree( GetProcessHeap(), 0, resTab );
 206         return FALSE;
 207     }
 208
 209     /* Find resource */
 210     typeInfo = (NE_TYPEINFO *)(resTab + 2);
 211
 212     if (HIWORD(typeid) != 0)  /* named type */
 213     {
 214         BYTE len = strlen( typeid );
 215         while (typeInfo->type_id)
 216         {
 217             if (!(typeInfo->type_id & 0x8000))
 218             {
 219                 BYTE *p = resTab + typeInfo->type_id;
 220                 if ((*p == len) && !strncasecmp( p+1, typeid, len )) goto found_type;
 221             }
 222             typeInfo = (NE_TYPEINFO *)((char *)(typeInfo + 1) +
 223                                        typeInfo->count * sizeof(NE_NAMEINFO));
 224         }
 225     }
 226     else  /* numeric type id */
 227     {
 228         WORD id = LOWORD(typeid) | 0x8000;
 229         while (typeInfo->type_id)
 230         {
 231             if (typeInfo->type_id == id) goto found_type;
 232             typeInfo = (NE_TYPEINFO *)((char *)(typeInfo + 1) +
 233                                        typeInfo->count * sizeof(NE_NAMEINFO));
 234         }
 235     }
 236     TRACE("No typeid entry found for %p\n", typeid );
 237     HeapFree( GetProcessHeap(), 0, resTab );
 238     return FALSE;
 239
 240  found_type:
 241     nameInfo = (NE_NAMEINFO *)(typeInfo + 1);
 242
 243     if (HIWORD(resid) != 0)  /* named resource */
 244     {
 245         BYTE len = strlen( resid );
 246         for (count = typeInfo->count; count > 0; count--, nameInfo++)
 247         {
 248             BYTE *p = resTab + nameInfo->id;
 249             if (nameInfo->id & 0x8000) continue;
 250             if ((*p == len) && !strncasecmp( p+1, resid, len )) goto found_name;
 251         }
 252     }
 253     else  /* numeric resource id */
 254     {
 255         WORD id = LOWORD(resid) | 0x8000;
 256         for (count = typeInfo->count; count > 0; count--, nameInfo++)
 257             if (nameInfo->id == id) goto found_name;
 258     }
 259     TRACE("No resid entry found for %p\n", typeid );
 260     HeapFree( GetProcessHeap(), 0, resTab );
 261     return FALSE;
 262
 263  found_name:
 264     /* Return resource data */
 265     if ( resLen ) *resLen = nameInfo->length << *(WORD *)resTab;
 266     if ( resOff ) *resOff = nameInfo->offset << *(WORD *)resTab;
 267
 268     HeapFree( GetProcessHeap(), 0, resTab );
 269     return TRUE;
 270 }
 271
 272 /***********************************************************************
 273  *           load_pe_resource         [internal]
 274  */
 275 static BOOL find_pe_resource( HFILE lzfd, LPCSTR typeid, LPCSTR resid,
 276                                 DWORD *resLen, DWORD *resOff )
 277 {
 278     IMAGE_NT_HEADERS pehd;
 279     DWORD pehdoffset;
 280     PIMAGE_DATA_DIRECTORY resDataDir;
 281     PIMAGE_SECTION_HEADER sections;
 282     LPBYTE resSection;
 283     DWORD resSectionSize;
 284     const void *resDir;
 285     const IMAGE_RESOURCE_DIRECTORY *resPtr;
 286     const IMAGE_RESOURCE_DATA_ENTRY *resData;
 287     int i, nSections;
 288     BOOL ret = FALSE;
 289
 290     /* Read in PE header */
 291     pehdoffset = LZSeek( lzfd, 0, SEEK_CUR );
 292     if ( sizeof(pehd) != LZRead( lzfd, (LPSTR)&pehd, sizeof(pehd) ) ) return 0;
 293
 294     resDataDir = pehd.OptionalHeader.DataDirectory+IMAGE_FILE_RESOURCE_DIRECTORY;
 295     if ( !resDataDir->Size )
 296     {
 297         TRACE("No resources in PE dll\n" );
 298         return FALSE;
 299     }
 300
 301     /* Read in section table */
 302     nSections = pehd.FileHeader.NumberOfSections;
 303     sections = HeapAlloc( GetProcessHeap(), 0,
 304                           nSections * sizeof(IMAGE_SECTION_HEADER) );
 305     if ( !sections ) return FALSE;
 306
 307     LZSeek( lzfd, pehdoffset +
 308                     sizeof(DWORD) + /* Signature */
 309                     sizeof(IMAGE_FILE_HEADER) +
 310                     pehd.FileHeader.SizeOfOptionalHeader, SEEK_SET );
 311
 312     if ( nSections * sizeof(IMAGE_SECTION_HEADER) !=
 313          LZRead( lzfd, (LPSTR)sections, nSections * sizeof(IMAGE_SECTION_HEADER) ) )
 314     {
 315         HeapFree( GetProcessHeap(), 0, sections );
 316         return FALSE;
 317     }
 318
 319     /* Find resource section */
 320     for ( i = 0; i < nSections; i++ )
 321         if (    resDataDir->VirtualAddress >= sections[i].VirtualAddress
 322              && resDataDir->VirtualAddress <  sections[i].VirtualAddress +
 323                                               sections[i].SizeOfRawData )
 324             break;
 325
 326     if ( i == nSections )
 327     {
 328         HeapFree( GetProcessHeap(), 0, sections );
 329         TRACE("Couldn't find resource section\n" );
 330         return FALSE;
 331     }
 332
 333     /* Read in resource section */
 334     resSectionSize = sections[i].SizeOfRawData;
 335     resSection = HeapAlloc( GetProcessHeap(), 0, resSectionSize );
 336     if ( !resSection )
 337     {
 338         HeapFree( GetProcessHeap(), 0, sections );
 339         return FALSE;
 340     }
 341
 342     LZSeek( lzfd, sections[i].PointerToRawData, SEEK_SET );
 343     if ( resSectionSize != LZRead( lzfd, resSection, resSectionSize ) ) goto done;
 344
 345     /* Find resource */
 346     resDir = resSection + (resDataDir->VirtualAddress - sections[i].VirtualAddress);
 347
 348     resPtr = (PIMAGE_RESOURCE_DIRECTORY)resDir;
 349     resPtr = find_entry_by_name( resPtr, typeid, resDir );
 350     if ( !resPtr )
 351     {
 352         TRACE("No typeid entry found for %p\n", typeid );
 353         goto done;
 354     }
 355     resPtr = find_entry_by_name( resPtr, resid, resDir );
 356     if ( !resPtr )
 357     {
 358         TRACE("No resid entry found for %p\n", resid );
 359         goto done;
 360     }
 361     resPtr = find_entry_default( resPtr, resDir );
 362     if ( !resPtr )
 363     {
 364         TRACE("No default language entry found for %p\n", resid );
 365         goto done;
 366     }
 367
 368     /* Find resource data section */
 369     resData = (PIMAGE_RESOURCE_DATA_ENTRY)resPtr;
 370     for ( i = 0; i < nSections; i++ )
 371         if (    resData->OffsetToData >= sections[i].VirtualAddress
 372              && resData->OffsetToData <  sections[i].VirtualAddress +
 373                                          sections[i].SizeOfRawData )
 374             break;
 375
 376     if ( i == nSections )
 377     {
 378         TRACE("Couldn't find resource data section\n" );
 379         goto done;
 380     }
 381
 382     /* Return resource data */
 383     if ( resLen ) *resLen = resData->Size;
 384     if ( resOff ) *resOff = resData->OffsetToData - sections[i].VirtualAddress
 385                             + sections[i].PointerToRawData;
 386     ret = TRUE;
 387
 388  done:
 389     HeapFree( GetProcessHeap(), 0, resSection );
 390     HeapFree( GetProcessHeap(), 0, sections );
 391     return ret;
 392 }
 393
 394
 395 /*************************************************************************
 396  * GetFileResourceSize                     [VER.2]
 397  */
 398 DWORD WINAPI GetFileResourceSize16( LPCSTR lpszFileName, LPCSTR lpszResType,
 399                                     LPCSTR lpszResId, LPDWORD lpdwFileOffset )
 400 {
 401     BOOL retv = FALSE;
 402     HFILE lzfd;
 403     OFSTRUCT ofs;
 404     DWORD reslen;
 405
 406     TRACE("(%s,type=0x%lx,id=0x%lx,off=%p)\n",
 407                 debugstr_a(lpszFileName), (LONG)lpszResType, (LONG)lpszResId,
 408                 lpszResId );
 409
 410     lzfd = LZOpenFileA( (LPSTR)lpszFileName, &ofs, OF_READ );
 411     if ( lzfd < 0 ) return 0;
 412
 413     switch ( read_xx_header( lzfd ) )
 414     {
 415     case IMAGE_OS2_SIGNATURE:
 416         retv = find_ne_resource( lzfd, lpszResType, lpszResId,
 417                                  &reslen, lpdwFileOffset );
 418         break;
 419
 420     case IMAGE_NT_SIGNATURE:
 421         retv = find_pe_resource( lzfd, lpszResType, lpszResId,
 422                                  &reslen, lpdwFileOffset );
 423         break;
 424     }
 425
 426     LZClose( lzfd );
 427     return retv? reslen : 0;
 428 }
 429
 430
 431 /*************************************************************************
 432  * GetFileResource                         [VER.3]
 433  */
 434 DWORD WINAPI GetFileResource16( LPCSTR lpszFileName, LPCSTR lpszResType,
 435                                 LPCSTR lpszResId, DWORD dwFileOffset,
 436                                 DWORD dwResLen, LPVOID lpvData )
 437 {
 438     BOOL retv = FALSE;
 439     HFILE lzfd;
 440     OFSTRUCT ofs;
 441     DWORD reslen = dwResLen;
 442
 443     TRACE("(%s,type=0x%lx,id=0x%lx,off=%ld,len=%ld,data=%p)\n",
 444                 debugstr_a(lpszFileName), (LONG)lpszResType, (LONG)lpszResId,
 445                 dwFileOffset, dwResLen, lpvData );
 446
 447     lzfd = LZOpenFileA( (LPSTR)lpszFileName, &ofs, OF_READ );
 448     if ( lzfd < 0 ) return 0;
 449
 450     if ( !dwFileOffset )
 451     {
 452         switch ( read_xx_header( lzfd ) )
 453         {
 454         case IMAGE_OS2_SIGNATURE:
 455             retv = find_ne_resource( lzfd, lpszResType, lpszResId,
 456                                      &reslen, &dwFileOffset );
 457             break;
 458
 459         case IMAGE_NT_SIGNATURE:
 460             retv = find_pe_resource( lzfd, lpszResType, lpszResId,
 461                                      &reslen, &dwFileOffset );
 462             break;
 463         }
 464
 465         if ( !retv )
 466         {
 467             LZClose( lzfd );
 468             return 0;
 469         }
 470     }
 471
 472     LZSeek( lzfd, dwFileOffset, SEEK_SET );
 473     reslen = LZRead( lzfd, lpvData, min( reslen, dwResLen ) );
 474     LZClose( lzfd );
 475
 476     return reslen;
 477 }
 478