dlls/user/exticon.c

   1 /*
   2  *      icon extracting
   3  *
   4  * taken and slightly changed from shell
   5  * this should replace the icon extraction code in shell32 and shell16 once
   6  * it needs a serious test for compliance with the native API
   7  *
   8  * Copyright 2000 Juergen Schmied
   9  *
  10  * This library is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU Lesser General Public
  12  * License as published by the Free Software Foundation; either
  13  * version 2.1 of the License, or (at your option) any later version.
  14  *
  15  * This library is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18  * Lesser General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU Lesser General Public
  21  * License along with this library; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  23  */
  24
  25 #include "config.h"
  26
  27 #include <stdarg.h>
  28 #include <string.h>
  29 #include <stdlib.h>     /* abs() */
  30 #include <sys/types.h>
  31 #ifdef HAVE_UNISTD_H
  32 # include <unistd.h>
  33 #endif
  34
  35 #define NONAMELESSUNION
  36 #define NONAMELESSSTRUCT
  37 #include "windef.h"
  38 #include "winbase.h"
  39 #include "winerror.h"
  40 #include "wingdi.h"
  41 #include "winuser.h"
  42 #include "wine/winbase16.h"
  43 #include "cursoricon.h"
  44 #include "wine/debug.h"
  45
  46 WINE_DEFAULT_DEBUG_CHANNEL(icon);
  47
  48 #include "pshpack1.h"
  49
  50 typedef struct
  51 {
  52     BYTE        bWidth;          /* Width, in pixels, of the image      */
  53     BYTE        bHeight;         /* Height, in pixels, of the image     */
  54     BYTE        bColorCount;     /* Number of colors in image (0 if >=8bpp) */
  55     BYTE        bReserved;       /* Reserved ( must be 0)               */
  56     WORD        wPlanes;         /* Color Planes                        */
  57     WORD        wBitCount;       /* Bits per pixel                      */
  58     DWORD       dwBytesInRes;    /* How many bytes in this resource?    */
  59     DWORD       dwImageOffset;   /* Where in the file is this image?    */
  60 } icoICONDIRENTRY, *LPicoICONDIRENTRY;
  61
  62 typedef struct
  63 {
  64     WORD            idReserved;   /* Reserved (must be 0) */
  65     WORD            idType;       /* Resource Type (RES_ICON or RES_CURSOR) */
  66     WORD            idCount;      /* How many images */
  67     icoICONDIRENTRY idEntries[1]; /* An entry for each image (idCount of 'em) */
  68 } icoICONDIR, *LPicoICONDIR;
  69
  70 #include "poppack.h"
  71
  72 #if 0
  73 static void dumpIcoDirEnty ( LPicoICONDIRENTRY entry )
  74 {
  75         TRACE("width = 0x%08x height = 0x%08x\n", entry->bWidth, entry->bHeight);
  76         TRACE("colors = 0x%08x planes = 0x%08x\n", entry->bColorCount, entry->wPlanes);
  77         TRACE("bitcount = 0x%08x bytesinres = 0x%08lx offset = 0x%08lx\n",
  78         entry->wBitCount, entry->dwBytesInRes, entry->dwImageOffset);
  79 }
  80 static void dumpIcoDir ( LPicoICONDIR entry )
  81 {
  82         TRACE("type = 0x%08x count = 0x%08x\n", entry->idType, entry->idCount);
  83 }
  84 #endif
  85
  86 /**********************************************************************
  87  *  find_entry_by_id
  88  *
  89  * Find an entry by id in a resource directory
  90  * Copied from loader/pe_resource.c (FIXME: should use exported resource functions)
  91  */
  92 static const IMAGE_RESOURCE_DIRECTORY *find_entry_by_id( const IMAGE_RESOURCE_DIRECTORY *dir,
  93                                                          WORD id, const void *root )
  94 {
  95     const IMAGE_RESOURCE_DIRECTORY_ENTRY *entry;
  96     int min, max, pos;
  97
  98     entry = (const IMAGE_RESOURCE_DIRECTORY_ENTRY *)(dir + 1);
  99     min = dir->NumberOfNamedEntries;
 100     max = min + dir->NumberOfIdEntries - 1;
 101     while (min <= max)
 102     {
 103         pos = (min + max) / 2;
 104         if (entry[pos].u1.s2.Id == id)
 105             return (IMAGE_RESOURCE_DIRECTORY *)((char *)root + entry[pos].u2.s3.OffsetToDirectory);
 106         if (entry[pos].u1.s2.Id > id) max = pos - 1;
 107         else min = pos + 1;
 108     }
 109     return NULL;
 110 }
 111
 112 /**********************************************************************
 113  *  find_entry_default
 114  *
 115  * Find a default entry in a resource directory
 116  * Copied from loader/pe_resource.c (FIXME: should use exported resource functions)
 117  */
 118 static const IMAGE_RESOURCE_DIRECTORY *find_entry_default( const IMAGE_RESOURCE_DIRECTORY *dir,
 119                                                            const void *root )
 120 {
 121     const IMAGE_RESOURCE_DIRECTORY_ENTRY *entry;
 122     entry = (const IMAGE_RESOURCE_DIRECTORY_ENTRY *)(dir + 1);
 123     return (IMAGE_RESOURCE_DIRECTORY *)((char *)root + entry->u2.s3.OffsetToDirectory);
 124 }
 125
 126 /*************************************************************************
 127  *                              USER32_GetResourceTable
 128  */
 129 static DWORD USER32_GetResourceTable(LPBYTE peimage,DWORD pesize,LPBYTE *retptr)
 130 {
 131         IMAGE_DOS_HEADER        * mz_header;
 132
 133         TRACE("%p %p\n", peimage, retptr);
 134
 135         *retptr = NULL;
 136
 137         mz_header = (IMAGE_DOS_HEADER*) peimage;
 138
 139         if (mz_header->e_magic != IMAGE_DOS_SIGNATURE)
 140         {
 141           if (mz_header->e_cblp == 1)   /* .ICO file ? */
 142           {
 143             *retptr = (LPBYTE)-1;       /* ICONHEADER.idType, must be 1 */
 144             return 1;
 145           }
 146           else
 147             return 0; /* failed */
 148         }
 149         if (mz_header->e_lfanew >= pesize) {
 150             return 0; /* failed, happens with PKZIP DOS Exes for instance. */
 151         }
 152         if (*((DWORD*)(peimage + mz_header->e_lfanew)) == IMAGE_NT_SIGNATURE )
 153           return IMAGE_NT_SIGNATURE;
 154
 155         if (*((WORD*)(peimage + mz_header->e_lfanew)) == IMAGE_OS2_SIGNATURE )
 156         {
 157           IMAGE_OS2_HEADER      * ne_header;
 158
 159           ne_header = (IMAGE_OS2_HEADER*)(peimage + mz_header->e_lfanew);
 160
 161           if (ne_header->ne_magic != IMAGE_OS2_SIGNATURE)
 162             return 0;
 163
 164           if( (ne_header->ne_restab - ne_header->ne_rsrctab) <= sizeof(NE_TYPEINFO) )
 165             *retptr = (LPBYTE)-1;
 166           else
 167             *retptr = peimage + mz_header->e_lfanew + ne_header->ne_rsrctab;
 168
 169           return IMAGE_OS2_SIGNATURE;
 170         }
 171         return 0; /* failed */
 172 }
 173 /*************************************************************************
 174  *                      USER32_LoadResource
 175  */
 176 static BYTE * USER32_LoadResource( LPBYTE peimage, NE_NAMEINFO* pNInfo, WORD sizeShift, ULONG *uSize)
 177 {
 178         TRACE("%p %p 0x%08x\n", peimage, pNInfo, sizeShift);
 179
 180         *uSize = (DWORD)pNInfo->length << sizeShift;
 181         return peimage + ((DWORD)pNInfo->offset << sizeShift);
 182 }
 183
 184 /*************************************************************************
 185  *                      ICO_LoadIcon
 186  */
 187 static BYTE * ICO_LoadIcon( LPBYTE peimage, LPicoICONDIRENTRY lpiIDE, ULONG *uSize)
 188 {
 189         TRACE("%p %p\n", peimage, lpiIDE);
 190
 191         *uSize = lpiIDE->dwBytesInRes;
 192         return peimage + lpiIDE->dwImageOffset;
 193 }
 194
 195 /*************************************************************************
 196  *                      ICO_GetIconDirectory
 197  *
 198  * Reads .ico file and build phony ICONDIR struct
 199  * see http://www.microsoft.com/win32dev/ui/icons.htm
 200  */
 201 #define HEADER_SIZE             (sizeof(CURSORICONDIR) - sizeof (CURSORICONDIRENTRY))
 202 #define HEADER_SIZE_FILE        (sizeof(icoICONDIR) - sizeof (icoICONDIRENTRY))
 203
 204 static BYTE * ICO_GetIconDirectory( LPBYTE peimage, LPicoICONDIR* lplpiID, ULONG *uSize )
 205 {
 206         CURSORICONDIR   * lpcid;        /* icon resource in resource-dir format */
 207         CURSORICONDIR   * lpID;         /* icon resource in resource format */
 208         int             i;
 209
 210         TRACE("%p %p\n", peimage, lplpiID);
 211
 212         lpcid = (CURSORICONDIR*)peimage;
 213
 214         if( lpcid->idReserved || (lpcid->idType != 1) || (!lpcid->idCount) )
 215           return 0;
 216
 217         /* allocate the phony ICONDIR structure */
 218         *uSize = lpcid->idCount * sizeof(CURSORICONDIRENTRY) + HEADER_SIZE;
 219         if( (lpID = (CURSORICONDIR*)HeapAlloc(GetProcessHeap(),0, *uSize) ))
 220         {
 221           /* copy the header */
 222           lpID->idReserved = lpcid->idReserved;
 223           lpID->idType = lpcid->idType;
 224           lpID->idCount = lpcid->idCount;
 225
 226           /* copy the entries */
 227           for( i=0; i < lpcid->idCount; i++ )
 228           {
 229             memcpy((void*)&(lpID->idEntries[i]),(void*)&(lpcid->idEntries[i]), sizeof(CURSORICONDIRENTRY) - 2);
 230             lpID->idEntries[i].wResId = i;
 231           }
 232
 233           *lplpiID = (LPicoICONDIR)peimage;
 234           return (BYTE *)lpID;
 235         }
 236         return 0;
 237 }
 238
 239 /*************************************************************************
 240  *      ICO_ExtractIconExW              [internal]
 241  *
 242  * NOTES
 243  *  nIcons = 0: returns number of Icons in file
 244  *
 245  * returns
 246  *  invalid file: -1
 247  *  failure:0;
 248  *  success: number of icons in file (nIcons = 0) or nr of icons retrieved
 249  */
 250 static UINT ICO_ExtractIconExW(
 251         LPCWSTR lpszExeFileName,
 252         HICON * RetPtr,
 253         INT nIconIndex,
 254         UINT nIcons,
 255         UINT cxDesired,
 256         UINT cyDesired,
 257         UINT *pIconId,
 258         UINT flags)
 259 {
 260         UINT            ret = 0;
 261         UINT            cx1, cx2, cy1, cy2;
 262         LPBYTE          pData;
 263         DWORD           sig;
 264         HANDLE          hFile;
 265         UINT16          iconDirCount = 0,iconCount = 0;
 266         LPBYTE          peimage;
 267         HANDLE          fmapping;
 268         ULONG           uSize;
 269         DWORD           fsizeh,fsizel;
 270         WCHAR           szExePath[MAX_PATH];
 271         DWORD           dwSearchReturn;
 272
 273         TRACE("%s, %d, %d %p 0x%08x\n", debugstr_w(lpszExeFileName), nIconIndex, nIcons, pIconId, flags);
 274
 275         dwSearchReturn = SearchPathW(NULL, lpszExeFileName, NULL, sizeof(szExePath) / sizeof(szExePath[0]), szExePath, NULL);
 276         if ((dwSearchReturn == 0) || (dwSearchReturn > sizeof(szExePath) / sizeof(szExePath[0])))
 277         {
 278             WARN("File %s not found or path too long\n", debugstr_w(lpszExeFileName));
 279             return -1;
 280         }
 281
 282         hFile = CreateFileW(szExePath, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, 0);
 283         if (hFile == INVALID_HANDLE_VALUE) return ret;
 284         fsizel = GetFileSize(hFile,&fsizeh);
 285
 286         /* Map the file */
 287         fmapping = CreateFileMappingW(hFile, NULL, PAGE_READONLY | SEC_COMMIT, 0, 0, NULL);
 288         CloseHandle(hFile);
 289         if (!fmapping)
 290         {
 291           WARN("CreateFileMapping error %ld\n", GetLastError() );
 292           return 0xFFFFFFFF;
 293         }
 294
 295         if (!(peimage = MapViewOfFile(fmapping, FILE_MAP_READ, 0, 0, 0)))
 296         {
 297           WARN("MapViewOfFile error %ld\n", GetLastError() );
 298           CloseHandle(fmapping);
 299           return 0xFFFFFFFF;
 300         }
 301         CloseHandle(fmapping);
 302
 303         cx1 = LOWORD(cxDesired);
 304         cx2 = HIWORD(cxDesired) ? HIWORD(cxDesired) : cx1;
 305         cy1 = LOWORD(cyDesired);
 306         cy2 = HIWORD(cyDesired) ? HIWORD(cyDesired) : cy1;
 307
 308         if (pIconId) /* Invalidate first icon identifier */
 309                 *pIconId = 0xFFFFFFFF;
 310
 311         if (!pIconId) /* if no icon identifier array present use the icon handle array as intermediate storage */
 312           pIconId = (UINT*)RetPtr;
 313
 314         sig = USER32_GetResourceTable(peimage, fsizel, &pData);
 315
 316 /* ico file or NE exe/dll*/
 317         if (sig==IMAGE_OS2_SIGNATURE || sig==1) /* .ICO file */
 318         {
 319           BYTE          *pCIDir = 0;
 320           NE_TYPEINFO   *pTInfo = (NE_TYPEINFO*)(pData + 2);
 321           NE_NAMEINFO   *pIconStorage = NULL;
 322           NE_NAMEINFO   *pIconDir = NULL;
 323           LPicoICONDIR  lpiID = NULL;
 324
 325           TRACE("-- OS2/icon Signature (0x%08lx)\n", sig);
 326
 327           if (pData == (BYTE*)-1)
 328           {
 329             pCIDir = ICO_GetIconDirectory(peimage, &lpiID, &uSize);     /* check for .ICO file */
 330             if (pCIDir)
 331             {
 332               iconDirCount = 1; iconCount = lpiID->idCount;
 333               TRACE("-- icon found %p 0x%08lx 0x%08x 0x%08x\n", pCIDir, uSize, iconDirCount, iconCount);
 334             }
 335           }
 336           else while (pTInfo->type_id && !(pIconStorage && pIconDir))
 337           {
 338             if (pTInfo->type_id == NE_RSCTYPE_GROUP_ICON)       /* find icon directory and icon repository */
 339             {
 340               iconDirCount = pTInfo->count;
 341               pIconDir = ((NE_NAMEINFO*)(pTInfo + 1));
 342               TRACE("\tfound directory - %i icon families\n", iconDirCount);
 343             }
 344             if (pTInfo->type_id == NE_RSCTYPE_ICON)
 345             {
 346               iconCount = pTInfo->count;
 347               pIconStorage = ((NE_NAMEINFO*)(pTInfo + 1));
 348               TRACE("\ttotal icons - %i\n", iconCount);
 349             }
 350             pTInfo = (NE_TYPEINFO *)((char*)(pTInfo+1)+pTInfo->count*sizeof(NE_NAMEINFO));
 351           }
 352
 353           if ((pIconStorage && pIconDir) || lpiID)        /* load resources and create icons */
 354           {
 355             if (nIcons == 0)
 356             {
 357               ret = iconDirCount;
 358               if (lpiID && pCIDir)      /* *.ico file, deallocate heap pointer*/
 359                 HeapFree(GetProcessHeap(), 0, pCIDir);
 360             }
 361             else if (nIconIndex < iconDirCount)
 362             {
 363               UINT16   i, icon;
 364               if (nIcons > iconDirCount - nIconIndex)
 365                 nIcons = iconDirCount - nIconIndex;
 366
 367               for (i = 0; i < nIcons; i++)
 368               {
 369                 /* .ICO files have only one icon directory */
 370                 if (lpiID == NULL)      /* not *.ico */
 371                   pCIDir = USER32_LoadResource(peimage, pIconDir + i + nIconIndex, *(WORD*)pData, &uSize);
 372                 pIconId[i] = LookupIconIdFromDirectoryEx(pCIDir, TRUE, (i & 1) ? cx2 : cx1, (i & 1) ? cy2 : cy1, flags);
 373               }
 374               if (lpiID && pCIDir)      /* *.ico file, deallocate heap pointer*/
 375                 HeapFree(GetProcessHeap(), 0, pCIDir);
 376
 377               for (icon = 0; icon < nIcons; icon++)
 378               {
 379                 pCIDir = NULL;
 380                 if (lpiID)
 381                   pCIDir = ICO_LoadIcon(peimage, lpiID->idEntries + (int)pIconId[icon], &uSize);
 382                 else
 383                   for (i = 0; i < iconCount; i++)
 384                     if (pIconStorage[i].id == ((int)pIconId[icon] | 0x8000) )
 385                       pCIDir = USER32_LoadResource(peimage, pIconStorage + i, *(WORD*)pData, &uSize);
 386
 387                 if (pCIDir)
 388                   RetPtr[icon] = (HICON)CreateIconFromResourceEx(pCIDir, uSize, TRUE, 0x00030000,
 389                                                                  (icon & 1) ? cx2 : cx1, (icon & 1) ? cy2 : cy1, flags);
 390                 else
 391                   RetPtr[icon] = 0;
 392               }
 393               ret = icon;       /* return number of retrieved icons */
 394             }
 395           }
 396         }
 397 /* end ico file */
 398
 399 /* exe/dll */
 400         else if( sig == IMAGE_NT_SIGNATURE )
 401         {
 402           LPBYTE                idata,igdata;
 403           PIMAGE_DOS_HEADER     dheader;
 404           PIMAGE_NT_HEADERS     pe_header;
 405           PIMAGE_SECTION_HEADER pe_sections;
 406           const IMAGE_RESOURCE_DIRECTORY *rootresdir,*iconresdir,*icongroupresdir;
 407           const IMAGE_RESOURCE_DATA_ENTRY *idataent,*igdataent;
 408           const IMAGE_RESOURCE_DIRECTORY_ENTRY *xresent;
 409           UINT  i, j;
 410
 411           dheader = (PIMAGE_DOS_HEADER)peimage;
 412           pe_header = (PIMAGE_NT_HEADERS)(peimage+dheader->e_lfanew);     /* it is a pe header, USER32_GetResourceTable checked that */
 413           pe_sections = (PIMAGE_SECTION_HEADER)(((char*)pe_header) + sizeof(DWORD) + sizeof(IMAGE_FILE_HEADER)
 414                                                 + pe_header->FileHeader.SizeOfOptionalHeader);
 415           rootresdir = NULL;
 416
 417           /* search for the root resource directory */
 418           for (i=0;i<pe_header->FileHeader.NumberOfSections;i++)
 419           {
 420             if (pe_sections[i].Characteristics & IMAGE_SCN_CNT_UNINITIALIZED_DATA)
 421               continue;
 422             if (fsizel < pe_sections[i].PointerToRawData+pe_sections[i].SizeOfRawData) {
 423               FIXME("File %s too short (section is at %ld bytes, real size is %ld)\n",
 424                       debugstr_w(lpszExeFileName),
 425                       pe_sections[i].PointerToRawData+pe_sections[i].SizeOfRawData,
 426                       fsizel
 427               );
 428               goto end;
 429             }
 430             /* FIXME: doesn't work when the resources are not in a separate section */
 431             if (pe_sections[i].VirtualAddress == pe_header->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_RESOURCE].VirtualAddress)
 432             {
 433               rootresdir = (PIMAGE_RESOURCE_DIRECTORY)(peimage+pe_sections[i].PointerToRawData);
 434               break;
 435             }
 436           }
 437
 438           if (!rootresdir)
 439           {
 440             WARN("haven't found section for resource directory.\n");
 441             goto end;           /* failure */
 442           }
 443
 444           /* search for the group icon directory */
 445           if (!(icongroupresdir = find_entry_by_id(rootresdir, LOWORD(RT_GROUP_ICON), rootresdir)))
 446           {
 447             WARN("No Icongroupresourcedirectory!\n");
 448             goto end;           /* failure */
 449           }
 450           iconDirCount = icongroupresdir->NumberOfNamedEntries + icongroupresdir->NumberOfIdEntries;
 451
 452           /* only number of icons requested */
 453           if( nIcons == 0 )
 454           {
 455             ret = iconDirCount;
 456             goto end;           /* success */
 457           }
 458
 459           if( nIconIndex < 0 )
 460           {
 461             /* search resource id */
 462             int n = 0;
 463             int iId = abs(nIconIndex);
 464             PIMAGE_RESOURCE_DIRECTORY_ENTRY xprdeTmp = (PIMAGE_RESOURCE_DIRECTORY_ENTRY)(icongroupresdir+1);
 465
 466             while(n<iconDirCount && xprdeTmp)
 467             {
 468               if(xprdeTmp->u1.s2.Id ==  iId)
 469               {
 470                   nIconIndex = n;
 471                   break;
 472               }
 473               n++;
 474               xprdeTmp++;
 475             }
 476             if (nIconIndex < 0)
 477             {
 478               WARN("resource id %d not found\n", iId);
 479               goto end;         /* failure */
 480             }
 481           }
 482           else
 483           {
 484             /* check nIconIndex to be in range */
 485             if (nIconIndex >= iconDirCount)
 486             {
 487               WARN("nIconIndex %d is larger than iconDirCount %d\n",nIconIndex,iconDirCount);
 488               goto end;         /* failure */
 489             }
 490           }
 491
 492           /* assure we don't get too much */
 493           if( nIcons > iconDirCount - nIconIndex )
 494             nIcons = iconDirCount - nIconIndex;
 495
 496           /* starting from specified index */
 497           xresent = (PIMAGE_RESOURCE_DIRECTORY_ENTRY)(icongroupresdir+1) + nIconIndex;
 498
 499           for (i=0; i < nIcons; i++,xresent++)
 500           {
 501             const IMAGE_RESOURCE_DIRECTORY *resdir;
 502
 503             /* go down this resource entry, name */
 504             resdir = (PIMAGE_RESOURCE_DIRECTORY)((DWORD)rootresdir+(xresent->u2.s3.OffsetToDirectory));
 505
 506             /* default language (0) */
 507             resdir = find_entry_default(resdir,rootresdir);
 508             igdataent = (PIMAGE_RESOURCE_DATA_ENTRY)resdir;
 509
 510             /* lookup address in mapped image for virtual address */
 511             igdata = NULL;
 512
 513             for (j=0;j<pe_header->FileHeader.NumberOfSections;j++)
 514             {
 515               if (igdataent->OffsetToData < pe_sections[j].VirtualAddress)
 516                 continue;
 517               if (igdataent->OffsetToData+igdataent->Size > pe_sections[j].VirtualAddress+pe_sections[j].SizeOfRawData)
 518                 continue;
 519
 520               if (igdataent->OffsetToData-pe_sections[j].VirtualAddress+pe_sections[j].PointerToRawData+igdataent->Size > fsizel) {
 521                 FIXME("overflow in PE lookup (%s has len %ld, have offset %ld), short file?\n", debugstr_w(lpszExeFileName), fsizel,
 522                            igdataent->OffsetToData - pe_sections[j].VirtualAddress + pe_sections[j].PointerToRawData + igdataent->Size);
 523                 goto end; /* failure */
 524               }
 525               igdata = peimage+(igdataent->OffsetToData-pe_sections[j].VirtualAddress+pe_sections[j].PointerToRawData);
 526             }
 527
 528             if (!igdata)
 529             {
 530               FIXME("no matching real address for icongroup!\n");
 531               goto end; /* failure */
 532             }
 533             pIconId[i] = LookupIconIdFromDirectoryEx(igdata, TRUE, (i & 1) ? cx2 : cx1, (i & 1) ? cy2 : cy1, flags);
 534           }
 535
 536           if (!(iconresdir=find_entry_by_id(rootresdir,LOWORD(RT_ICON),rootresdir)))
 537           {
 538             WARN("No Iconresourcedirectory!\n");
 539             goto end;           /* failure */
 540           }
 541
 542           for (i=0; i<nIcons; i++)
 543           {
 544             const IMAGE_RESOURCE_DIRECTORY *xresdir;
 545             xresdir = find_entry_by_id(iconresdir, LOWORD(pIconId[i]), rootresdir);
 546             xresdir = find_entry_default(xresdir, rootresdir);
 547             idataent = (PIMAGE_RESOURCE_DATA_ENTRY)xresdir;
 548             idata = NULL;
 549
 550             /* map virtual to address in image */
 551             for (j=0;j<pe_header->FileHeader.NumberOfSections;j++)
 552             {
 553               if (idataent->OffsetToData < pe_sections[j].VirtualAddress)
 554                 continue;
 555               if (idataent->OffsetToData+idataent->Size > pe_sections[j].VirtualAddress+pe_sections[j].SizeOfRawData)
 556                 continue;
 557               idata = peimage+(idataent->OffsetToData-pe_sections[j].VirtualAddress+pe_sections[j].PointerToRawData);
 558             }
 559             if (!idata)
 560             {
 561               WARN("no matching real address found for icondata!\n");
 562               RetPtr[i]=0;
 563               continue;
 564             }
 565             RetPtr[i] = (HICON) CreateIconFromResourceEx(idata,idataent->Size,TRUE,0x00030000,
 566                                                          (i & 1) ? cx2 : cx1, (i & 1) ? cy2 : cy1, flags);
 567           }
 568           ret = i;      /* return number of retrieved icons */
 569         }                       /* if(sig == IMAGE_NT_SIGNATURE) */
 570
 571 end:
 572         UnmapViewOfFile(peimage);       /* success */
 573         return ret;
 574 }
 575
 576 /***********************************************************************
 577  *           PrivateExtractIconsW                       [USER32.@]
 578  *
 579  * NOTES
 580  *  If HIWORD(sizeX) && HIWORD(sizeY) 2 * ((nIcons + 1) MOD 2) icons are
 581  *  returned, with the LOWORD size icon first and the HIWORD size icon
 582  *  second.
 583  *  Also the Windows equivalent does extract icons in a strange way if
 584  *  nIndex is negative. Our implementation treats a negative nIndex as
 585  *  looking for that resource identifier for the first icon to retrieve.
 586  *
 587  * FIXME:
 588  *  should also support 16 bit EXE + DLLs, cursor and animated cursor as
 589  *  well as bitmap files.
 590  */
 591
 592 UINT WINAPI PrivateExtractIconsW (
 593         LPCWSTR lpwstrFile,
 594         int nIndex,
 595         int sizeX,
 596         int sizeY,
 597         HICON * phicon, /* [out] pointer to array of nIcons HICON handles */
 598         UINT* pIconId,  /* [out] pointer to array of nIcons icon identifiers or NULL */
 599         UINT nIcons,    /* [in] number of icons to retrieve */
 600         UINT flags )    /* [in] LR_* flags used by LoadImage */
 601 {
 602         TRACE("%s %d %dx%d %p %p %d 0x%08x\n",
 603               debugstr_w(lpwstrFile), nIndex, sizeX, sizeY, phicon, pIconId, nIcons, flags);
 604
 605         if ((nIcons & 1) && HIWORD(sizeX) && HIWORD(sizeY))
 606         {
 607           WARN("Uneven number %d of icons requested for small and large icons!\n", nIcons);
 608         }
 609         return ICO_ExtractIconExW(lpwstrFile, phicon, nIndex, nIcons, sizeX, sizeY, pIconId, flags);
 610 }
 611
 612 /***********************************************************************
 613  *           PrivateExtractIconsA                       [USER32.@]
 614  */
 615
 616 UINT WINAPI PrivateExtractIconsA (
 617         LPCSTR lpstrFile,
 618         int nIndex,
 619         int sizeX,
 620         int sizeY,
 621         HICON * phicon, /* [out] pointer to array of nIcons HICON handles */
 622         UINT* piconid,  /* [out] pointer to array of nIcons icon identifiers or NULL */
 623         UINT nIcons,    /* [in] number of icons to retrieve */
 624         UINT flags )    /* [in] LR_* flags used by LoadImage */
 625 {
 626     UINT ret;
 627     INT len = MultiByteToWideChar(CP_ACP, 0, lpstrFile, -1, NULL, 0);
 628     LPWSTR lpwstrFile = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR));
 629
 630     MultiByteToWideChar(CP_ACP, 0, lpstrFile, -1, lpwstrFile, len);
 631     ret = PrivateExtractIconsW(lpwstrFile, nIndex, sizeX, sizeY, phicon, piconid, nIcons, flags);
 632
 633     HeapFree(GetProcessHeap(), 0, lpwstrFile);
 634     return ret;
 635 }
 636
 637 /***********************************************************************
 638  *           PrivateExtractIconExW                      [USER32.@]
 639  * NOTES
 640  *  if nIndex == -1 it returns the number of icons in any case !!!
 641  */
 642 UINT WINAPI PrivateExtractIconExW (
 643         LPCWSTR lpwstrFile,
 644         int nIndex,
 645         HICON * phIconLarge,
 646         HICON * phIconSmall,
 647         UINT nIcons )
 648 {
 649         DWORD cyicon, cysmicon, cxicon, cxsmicon;
 650         UINT ret = 0;
 651
 652         TRACE("%s %d %p %p %d\n",
 653         debugstr_w(lpwstrFile),nIndex,phIconLarge, phIconSmall, nIcons);
 654
 655         if (nIndex == -1)
 656           /* get the number of icons */
 657           return ICO_ExtractIconExW(lpwstrFile, NULL, 0, 0, 0, 0, NULL, LR_DEFAULTCOLOR);
 658
 659         if (nIcons == 1 && phIconSmall && phIconLarge)
 660         {
 661           HICON hIcon[2];
 662           cxicon = GetSystemMetrics(SM_CXICON);
 663           cyicon = GetSystemMetrics(SM_CYICON);
 664           cxsmicon = GetSystemMetrics(SM_CXSMICON);
 665           cysmicon = GetSystemMetrics(SM_CYSMICON);
 666
 667           ret = ICO_ExtractIconExW(lpwstrFile, (HICON*) &hIcon, nIndex, 2, cxicon | (cxsmicon<<16),
 668                                    cyicon | (cysmicon<<16), NULL, LR_DEFAULTCOLOR);
 669           *phIconLarge = hIcon[0];
 670           *phIconSmall = hIcon[1];
 671           return ret;
 672         }
 673
 674         if (phIconSmall)
 675         {
 676           /* extract n small icons */
 677           cxsmicon = GetSystemMetrics(SM_CXSMICON);
 678           cysmicon = GetSystemMetrics(SM_CYSMICON);
 679           ret = ICO_ExtractIconExW(lpwstrFile, phIconSmall, nIndex, nIcons, cxsmicon,
 680                                    cysmicon, NULL, LR_DEFAULTCOLOR);
 681         }
 682        if (phIconLarge)
 683         {
 684           /* extract n large icons */
 685           cxicon = GetSystemMetrics(SM_CXICON);
 686           cyicon = GetSystemMetrics(SM_CYICON);
 687          ret = ICO_ExtractIconExW(lpwstrFile, phIconLarge, nIndex, nIcons, cxicon,
 688                                    cyicon, NULL, LR_DEFAULTCOLOR);
 689         }
 690         return ret;
 691 }
 692
 693 /***********************************************************************
 694  *           PrivateExtractIconExA                      [USER32.@]
 695  */
 696 UINT WINAPI PrivateExtractIconExA (
 697         LPCSTR lpstrFile,
 698         int nIndex,
 699         HICON * phIconLarge,
 700         HICON * phIconSmall,
 701         UINT nIcons )
 702 {
 703         UINT ret;
 704         INT len = MultiByteToWideChar(CP_ACP, 0, lpstrFile, -1, NULL, 0);
 705         LPWSTR lpwstrFile = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR));
 706
 707         TRACE("%s %d %p %p %d\n", lpstrFile, nIndex, phIconLarge, phIconSmall, nIcons);
 708
 709         MultiByteToWideChar(CP_ACP, 0, lpstrFile, -1, lpwstrFile, len);
 710         ret = PrivateExtractIconExW(lpwstrFile, nIndex, phIconLarge, phIconSmall, nIcons);
 711         HeapFree(GetProcessHeap(), 0, lpwstrFile);
 712         return ret;
 713 }