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 "winuser.h"
  41 #include "wine/winbase16.h"
  42 #include "user_private.h"
  43 #include "wine/debug.h"
  44
  45 WINE_DEFAULT_DEBUG_CHANNEL(icon);
  46
  47 #include "pshpack1.h"
  48
  49 typedef struct
  50 {
  51     BYTE        bWidth;          /* Width, in pixels, of the image      */
  52     BYTE        bHeight;         /* Height, in pixels, of the image     */
  53     BYTE        bColorCount;     /* Number of colors in image (0 if >=8bpp) */
  54     BYTE        bReserved;       /* Reserved ( must be 0)               */
  55     WORD        wPlanes;         /* Color Planes                        */
  56     WORD        wBitCount;       /* Bits per pixel                      */
  57     DWORD       dwBytesInRes;    /* How many bytes in this resource?    */
  58     DWORD       dwImageOffset;   /* Where in the file is this image?    */
  59 } icoICONDIRENTRY, *LPicoICONDIRENTRY;
  60
  61 typedef struct
  62 {
  63     WORD            idReserved;   /* Reserved (must be 0) */
  64     WORD            idType;       /* Resource Type (RES_ICON or RES_CURSOR) */
  65     WORD            idCount;      /* How many images */
  66     icoICONDIRENTRY idEntries[1]; /* An entry for each image (idCount of 'em) */
  67 } icoICONDIR, *LPicoICONDIR;
  68
  69 #include "poppack.h"
  70
  71 #if 0
  72 static void dumpIcoDirEnty ( LPicoICONDIRENTRY entry )
  73 {
  74         TRACE("width = 0x%08x height = 0x%08x\n", entry->bWidth, entry->bHeight);
  75         TRACE("colors = 0x%08x planes = 0x%08x\n", entry->bColorCount, entry->wPlanes);
  76         TRACE("bitcount = 0x%08x bytesinres = 0x%08lx offset = 0x%08lx\n",
  77         entry->wBitCount, entry->dwBytesInRes, entry->dwImageOffset);
  78 }
  79 static void dumpIcoDir ( LPicoICONDIR entry )
  80 {
  81         TRACE("type = 0x%08x count = 0x%08x\n", entry->idType, entry->idCount);
  82 }
  83 #endif
  84
  85 /**********************************************************************
  86  *  find_entry_by_id
  87  *
  88  * Find an entry by id in a resource directory
  89  * Copied from loader/pe_resource.c (FIXME: should use exported resource functions)
  90  */
  91 static const IMAGE_RESOURCE_DIRECTORY *find_entry_by_id( const IMAGE_RESOURCE_DIRECTORY *dir,
  92                                                          WORD id, const void *root )
  93 {
  94     const IMAGE_RESOURCE_DIRECTORY_ENTRY *entry;
  95     int min, max, pos;
  96
  97     entry = (const IMAGE_RESOURCE_DIRECTORY_ENTRY *)(dir + 1);
  98     min = dir->NumberOfNamedEntries;
  99     max = min + dir->NumberOfIdEntries - 1;
 100     while (min <= max)
 101     {
 102         pos = (min + max) / 2;
 103         if (entry[pos].u1.s2.Id == id)
 104             return (const IMAGE_RESOURCE_DIRECTORY *)((const char *)root + entry[pos].u2.s3.OffsetToDirectory);
 105         if (entry[pos].u1.s2.Id > id) max = pos - 1;
 106         else min = pos + 1;
 107     }
 108     return NULL;
 109 }
 110
 111 /**********************************************************************
 112  *  find_entry_default
 113  *
 114  * Find a default entry in a resource directory
 115  * Copied from loader/pe_resource.c (FIXME: should use exported resource functions)
 116  */
 117 static const IMAGE_RESOURCE_DIRECTORY *find_entry_default( const IMAGE_RESOURCE_DIRECTORY *dir,
 118                                                            const void *root )
 119 {
 120     const IMAGE_RESOURCE_DIRECTORY_ENTRY *entry;
 121     entry = (const IMAGE_RESOURCE_DIRECTORY_ENTRY *)(dir + 1);
 122     return (const IMAGE_RESOURCE_DIRECTORY *)((const char *)root + entry->u2.s3.OffsetToDirectory);
 123 }
 124
 125 /*************************************************************************
 126  *                              USER32_GetResourceTable
 127  */
 128 static DWORD USER32_GetResourceTable(LPBYTE peimage,DWORD pesize,LPBYTE *retptr)
 129 {
 130         IMAGE_DOS_HEADER        * mz_header;
 131
 132         TRACE("%p %p\n", peimage, retptr);
 133
 134         *retptr = NULL;
 135
 136         mz_header = (IMAGE_DOS_HEADER*) peimage;
 137
 138         if (mz_header->e_magic != IMAGE_DOS_SIGNATURE)
 139         {
 140           if (mz_header->e_cblp == 1)   /* .ICO file ? */
 141           {
 142             *retptr = (LPBYTE)-1;       /* ICONHEADER.idType, must be 1 */
 143             return 1;
 144           }
 145           else
 146             return 0; /* failed */
 147         }
 148         if (mz_header->e_lfanew >= pesize) {
 149             return 0; /* failed, happens with PKZIP DOS Exes for instance. */
 150         }
 151         if (*((DWORD*)(peimage + mz_header->e_lfanew)) == IMAGE_NT_SIGNATURE )
 152           return IMAGE_NT_SIGNATURE;
 153
 154         if (*((WORD*)(peimage + mz_header->e_lfanew)) == IMAGE_OS2_SIGNATURE )
 155         {
 156           IMAGE_OS2_HEADER      * ne_header;
 157
 158           ne_header = (IMAGE_OS2_HEADER*)(peimage + mz_header->e_lfanew);
 159
 160           if (ne_header->ne_magic != IMAGE_OS2_SIGNATURE)
 161             return 0;
 162
 163           if( (ne_header->ne_restab - ne_header->ne_rsrctab) <= sizeof(NE_TYPEINFO) )
 164             *retptr = (LPBYTE)-1;
 165           else
 166             *retptr = peimage + mz_header->e_lfanew + ne_header->ne_rsrctab;
 167
 168           return IMAGE_OS2_SIGNATURE;
 169         }
 170         return 0; /* failed */
 171 }
 172 /*************************************************************************
 173  *                      USER32_LoadResource
 174  */
 175 static BYTE * USER32_LoadResource( LPBYTE peimage, NE_NAMEINFO* pNInfo, WORD sizeShift, ULONG *uSize)
 176 {
 177         TRACE("%p %p 0x%08x\n", peimage, pNInfo, sizeShift);
 178
 179         *uSize = (DWORD)pNInfo->length << sizeShift;
 180         return peimage + ((DWORD)pNInfo->offset << sizeShift);
 181 }
 182
 183 /*************************************************************************
 184  *                      ICO_LoadIcon
 185  */
 186 static BYTE * ICO_LoadIcon( LPBYTE peimage, LPicoICONDIRENTRY lpiIDE, ULONG *uSize)
 187 {
 188         TRACE("%p %p\n", peimage, lpiIDE);
 189
 190         *uSize = lpiIDE->dwBytesInRes;
 191         return peimage + lpiIDE->dwImageOffset;
 192 }
 193
 194 /*************************************************************************
 195  *                      ICO_GetIconDirectory
 196  *
 197  * Reads .ico file and build phony ICONDIR struct
 198  * see http://www.microsoft.com/win32dev/ui/icons.htm
 199  */
 200 #define HEADER_SIZE             (sizeof(CURSORICONDIR) - sizeof (CURSORICONDIRENTRY))
 201 #define HEADER_SIZE_FILE        (sizeof(icoICONDIR) - sizeof (icoICONDIRENTRY))
 202
 203 static BYTE * ICO_GetIconDirectory( LPBYTE peimage, LPicoICONDIR* lplpiID, ULONG *uSize )
 204 {
 205         CURSORICONDIR   * lpcid;        /* icon resource in resource-dir format */
 206         CURSORICONDIR   * lpID;         /* icon resource in resource format */
 207         int             i;
 208
 209         TRACE("%p %p\n", peimage, lplpiID);
 210
 211         lpcid = (CURSORICONDIR*)peimage;
 212
 213         if( lpcid->idReserved || (lpcid->idType != 1) || (!lpcid->idCount) )
 214           return 0;
 215
 216         /* allocate the phony ICONDIR structure */
 217         *uSize = lpcid->idCount * sizeof(CURSORICONDIRENTRY) + HEADER_SIZE;
 218         if( (lpID = HeapAlloc(GetProcessHeap(),0, *uSize) ))
 219         {
 220           /* copy the header */
 221           lpID->idReserved = lpcid->idReserved;
 222           lpID->idType = lpcid->idType;
 223           lpID->idCount = lpcid->idCount;
 224
 225           /* copy the entries */
 226           for( i=0; i < lpcid->idCount; i++ )
 227           {
 228             memcpy((void*)&(lpID->idEntries[i]),(void*)&(lpcid->idEntries[i]), sizeof(CURSORICONDIRENTRY) - 2);
 229             lpID->idEntries[i].wResId = i;
 230           }
 231
 232           *lplpiID = (LPicoICONDIR)peimage;
 233           return (BYTE *)lpID;
 234         }
 235         return 0;
 236 }
 237
 238 /*************************************************************************
 239  *      ICO_ExtractIconExW              [internal]
 240  *
 241  * NOTES
 242  *  nIcons = 0: returns number of Icons in file
 243  *
 244  * returns
 245  *  invalid file: -1
 246  *  failure:0;
 247  *  success: number of icons in file (nIcons = 0) or nr of icons retrieved
 248  */
 249 static UINT ICO_ExtractIconExW(
 250         LPCWSTR lpszExeFileName,
 251         HICON * RetPtr,
 252         INT nIconIndex,
 253         UINT nIcons,
 254         UINT cxDesired,
 255         UINT cyDesired,
 256         UINT *pIconId,
 257         UINT flags)
 258 {
 259         UINT            ret = 0;
 260         UINT            cx1, cx2, cy1, cy2;
 261         LPBYTE          pData;
 262         DWORD           sig;
 263         HANDLE          hFile;
 264         UINT16          iconDirCount = 0,iconCount = 0;
 265         LPBYTE          peimage;
 266         HANDLE          fmapping;
 267         ULONG           uSize;
 268         DWORD           fsizeh,fsizel;
 269         WCHAR           szExePath[MAX_PATH];
 270         DWORD           dwSearchReturn;
 271
 272         TRACE("%s, %d, %d %p 0x%08x\n", debugstr_w(lpszExeFileName), nIconIndex, nIcons, pIconId, flags);
 273
 274         dwSearchReturn = SearchPathW(NULL, lpszExeFileName, NULL, sizeof(szExePath) / sizeof(szExePath[0]), szExePath, NULL);
 275         if ((dwSearchReturn == 0) || (dwSearchReturn > sizeof(szExePath) / sizeof(szExePath[0])))
 276         {
 277             WARN("File %s not found or path too long\n", debugstr_w(lpszExeFileName));
 278             return -1;
 279         }
 280
 281         hFile = CreateFileW(szExePath, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, 0);
 282         if (hFile == INVALID_HANDLE_VALUE) return ret;
 283         fsizel = GetFileSize(hFile,&fsizeh);
 284
 285         /* Map the file */
 286         fmapping = CreateFileMappingW(hFile, NULL, PAGE_READONLY | SEC_COMMIT, 0, 0, NULL);
 287         CloseHandle(hFile);
 288         if (!fmapping)
 289         {
 290           WARN("CreateFileMapping error %ld\n", GetLastError() );
 291           return 0xFFFFFFFF;
 292         }
 293
 294         if (!(peimage = MapViewOfFile(fmapping, FILE_MAP_READ, 0, 0, 0)))
 295         {
 296           WARN("MapViewOfFile error %ld\n", GetLastError() );
 297           CloseHandle(fmapping);
 298           return 0xFFFFFFFF;
 299         }
 300         CloseHandle(fmapping);
 301
 302         cx1 = LOWORD(cxDesired);
 303         cx2 = HIWORD(cxDesired) ? HIWORD(cxDesired) : cx1;
 304         cy1 = LOWORD(cyDesired);
 305         cy2 = HIWORD(cyDesired) ? HIWORD(cyDesired) : cy1;
 306
 307         if (pIconId) /* Invalidate first icon identifier */
 308                 *pIconId = 0xFFFFFFFF;
 309
 310         if (!pIconId) /* if no icon identifier array present use the icon handle array as intermediate storage */
 311           pIconId = (UINT*)RetPtr;
 312
 313         sig = USER32_GetResourceTable(peimage, fsizel, &pData);
 314
 315 /* ico file or NE exe/dll*/
 316         if (sig==IMAGE_OS2_SIGNATURE || sig==1) /* .ICO file */
 317         {
 318           BYTE          *pCIDir = 0;
 319           NE_TYPEINFO   *pTInfo = (NE_TYPEINFO*)(pData + 2);
 320           NE_NAMEINFO   *pIconStorage = NULL;
 321           NE_NAMEINFO   *pIconDir = NULL;
 322           LPicoICONDIR  lpiID = NULL;
 323
 324           TRACE("-- OS2/icon Signature (0x%08lx)\n", sig);
 325
 326           if (pData == (BYTE*)-1)
 327           {
 328             pCIDir = ICO_GetIconDirectory(peimage, &lpiID, &uSize);     /* check for .ICO file */
 329             if (pCIDir)
 330             {
 331               iconDirCount = 1; iconCount = lpiID->idCount;
 332               TRACE("-- icon found %p 0x%08lx 0x%08x 0x%08x\n", pCIDir, uSize, iconDirCount, iconCount);
 333             }
 334           }
 335           else while (pTInfo->type_id && !(pIconStorage && pIconDir))
 336           {
 337             if (pTInfo->type_id == NE_RSCTYPE_GROUP_ICON)       /* find icon directory and icon repository */
 338             {
 339               iconDirCount = pTInfo->count;
 340               pIconDir = ((NE_NAMEINFO*)(pTInfo + 1));
 341               TRACE("\tfound directory - %i icon families\n", iconDirCount);
 342             }
 343             if (pTInfo->type_id == NE_RSCTYPE_ICON)
 344             {
 345               iconCount = pTInfo->count;
 346               pIconStorage = ((NE_NAMEINFO*)(pTInfo + 1));
 347               TRACE("\ttotal icons - %i\n", iconCount);
 348             }
 349             pTInfo = (NE_TYPEINFO *)((char*)(pTInfo+1)+pTInfo->count*sizeof(NE_NAMEINFO));
 350           }
 351
 352           if ((pIconStorage && pIconDir) || lpiID)        /* load resources and create icons */
 353           {
 354             if (nIcons == 0)
 355             {
 356               ret = iconDirCount;
 357               if (lpiID && pCIDir)      /* *.ico file, deallocate heap pointer*/
 358                 HeapFree(GetProcessHeap(), 0, pCIDir);
 359             }
 360             else if (nIconIndex < iconDirCount)
 361             {
 362               UINT16   i, icon;
 363               if (nIcons > iconDirCount - nIconIndex)
 364                 nIcons = iconDirCount - nIconIndex;
 365
 366               for (i = 0; i < nIcons; i++)
 367               {
 368                 /* .ICO files have only one icon directory */
 369                 if (lpiID == NULL)      /* not *.ico */
 370                   pCIDir = USER32_LoadResource(peimage, pIconDir + i + nIconIndex, *(WORD*)pData, &uSize);
 371                 pIconId[i] = LookupIconIdFromDirectoryEx(pCIDir, TRUE, (i & 1) ? cx2 : cx1, (i & 1) ? cy2 : cy1, flags);
 372               }
 373               if (lpiID && pCIDir)      /* *.ico file, deallocate heap pointer*/
 374                 HeapFree(GetProcessHeap(), 0, pCIDir);
 375
 376               for (icon = 0; icon < nIcons; icon++)
 377               {
 378                 pCIDir = NULL;
 379                 if (lpiID)
 380                   pCIDir = ICO_LoadIcon(peimage, lpiID->idEntries + (int)pIconId[icon], &uSize);
 381                 else
 382                   for (i = 0; i < iconCount; i++)
 383                     if (pIconStorage[i].id == ((int)pIconId[icon] | 0x8000) )
 384                       pCIDir = USER32_LoadResource(peimage, pIconStorage + i, *(WORD*)pData, &uSize);
 385
 386                 if (pCIDir)
 387                   RetPtr[icon] = (HICON)CreateIconFromResourceEx(pCIDir, uSize, TRUE, 0x00030000,
 388                                                                  (icon & 1) ? cx2 : cx1, (icon & 1) ? cy2 : cy1, flags);
 389                 else
 390                   RetPtr[icon] = 0;
 391               }
 392               ret = icon;       /* return number of retrieved icons */
 393             }
 394           }
 395         }
 396 /* end ico file */
 397
 398 /* exe/dll */
 399         else if( sig == IMAGE_NT_SIGNATURE )
 400         {
 401           LPBYTE                idata,igdata;
 402           PIMAGE_DOS_HEADER     dheader;
 403           PIMAGE_NT_HEADERS     pe_header;
 404           PIMAGE_SECTION_HEADER pe_sections;
 405           const IMAGE_RESOURCE_DIRECTORY *rootresdir,*iconresdir,*icongroupresdir;
 406           const IMAGE_RESOURCE_DATA_ENTRY *idataent,*igdataent;
 407           const IMAGE_RESOURCE_DIRECTORY_ENTRY *xresent;
 408           UINT  i, j;
 409
 410           dheader = (PIMAGE_DOS_HEADER)peimage;
 411           pe_header = (PIMAGE_NT_HEADERS)(peimage+dheader->e_lfanew);     /* it is a pe header, USER32_GetResourceTable checked that */
 412           pe_sections = (PIMAGE_SECTION_HEADER)(((char*)pe_header) + sizeof(DWORD) + sizeof(IMAGE_FILE_HEADER)
 413                                                 + pe_header->FileHeader.SizeOfOptionalHeader);
 414           rootresdir = NULL;
 415
 416           /* search for the root resource directory */
 417           for (i=0;i<pe_header->FileHeader.NumberOfSections;i++)
 418           {
 419             if (pe_sections[i].Characteristics & IMAGE_SCN_CNT_UNINITIALIZED_DATA)
 420               continue;
 421             if (fsizel < pe_sections[i].PointerToRawData+pe_sections[i].SizeOfRawData) {
 422               FIXME("File %s too short (section is at %ld bytes, real size is %ld)\n",
 423                       debugstr_w(lpszExeFileName),
 424                       pe_sections[i].PointerToRawData+pe_sections[i].SizeOfRawData,
 425                       fsizel
 426               );
 427               goto end;
 428             }
 429             /* FIXME: doesn't work when the resources are not in a separate section */
 430             if (pe_sections[i].VirtualAddress == pe_header->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_RESOURCE].VirtualAddress)
 431             {
 432               rootresdir = (PIMAGE_RESOURCE_DIRECTORY)(peimage+pe_sections[i].PointerToRawData);
 433               break;
 434             }
 435           }
 436
 437           if (!rootresdir)
 438           {
 439             WARN("haven't found section for resource directory.\n");
 440             goto end;           /* failure */
 441           }
 442
 443           /* search for the group icon directory */
 444           if (!(icongroupresdir = find_entry_by_id(rootresdir, LOWORD(RT_GROUP_ICON), rootresdir)))
 445           {
 446             WARN("No Icongroupresourcedirectory!\n");
 447             goto end;           /* failure */
 448           }
 449           iconDirCount = icongroupresdir->NumberOfNamedEntries + icongroupresdir->NumberOfIdEntries;
 450
 451           /* only number of icons requested */
 452           if( nIcons == 0 )
 453           {
 454             ret = iconDirCount;
 455             goto end;           /* success */
 456           }
 457
 458           if( nIconIndex < 0 )
 459           {
 460             /* search resource id */
 461             int n = 0;
 462             int iId = abs(nIconIndex);
 463             const IMAGE_RESOURCE_DIRECTORY_ENTRY* xprdeTmp = (const IMAGE_RESOURCE_DIRECTORY_ENTRY*)(icongroupresdir+1);
 464
 465             while(n<iconDirCount && xprdeTmp)
 466             {
 467               if(xprdeTmp->u1.s2.Id ==  iId)
 468               {
 469                   nIconIndex = n;
 470                   break;
 471               }
 472               n++;
 473               xprdeTmp++;
 474             }
 475             if (nIconIndex < 0)
 476             {
 477               WARN("resource id %d not found\n", iId);
 478               goto end;         /* failure */
 479             }
 480           }
 481           else
 482           {
 483             /* check nIconIndex to be in range */
 484             if (nIconIndex >= iconDirCount)
 485             {
 486               WARN("nIconIndex %d is larger than iconDirCount %d\n",nIconIndex,iconDirCount);
 487               goto end;         /* failure */
 488             }
 489           }
 490
 491           /* assure we don't get too much */
 492           if( nIcons > iconDirCount - nIconIndex )
 493             nIcons = iconDirCount - nIconIndex;
 494
 495           /* starting from specified index */
 496           xresent = (const IMAGE_RESOURCE_DIRECTORY_ENTRY*)(icongroupresdir+1) + nIconIndex;
 497
 498           for (i=0; i < nIcons; i++,xresent++)
 499           {
 500             const IMAGE_RESOURCE_DIRECTORY *resdir;
 501
 502             /* go down this resource entry, name */
 503             resdir = (PIMAGE_RESOURCE_DIRECTORY)((DWORD)rootresdir+(xresent->u2.s3.OffsetToDirectory));
 504
 505             /* default language (0) */
 506             resdir = find_entry_default(resdir,rootresdir);
 507             igdataent = (const IMAGE_RESOURCE_DATA_ENTRY*)resdir;
 508
 509             /* lookup address in mapped image for virtual address */
 510             igdata = NULL;
 511
 512             for (j=0;j<pe_header->FileHeader.NumberOfSections;j++)
 513             {
 514               if (igdataent->OffsetToData < pe_sections[j].VirtualAddress)
 515                 continue;
 516               if (igdataent->OffsetToData+igdataent->Size > pe_sections[j].VirtualAddress+pe_sections[j].SizeOfRawData)
 517                 continue;
 518
 519               if (igdataent->OffsetToData-pe_sections[j].VirtualAddress+pe_sections[j].PointerToRawData+igdataent->Size > fsizel) {
 520                 FIXME("overflow in PE lookup (%s has len %ld, have offset %ld), short file?\n", debugstr_w(lpszExeFileName), fsizel,
 521                            igdataent->OffsetToData - pe_sections[j].VirtualAddress + pe_sections[j].PointerToRawData + igdataent->Size);
 522                 goto end; /* failure */
 523               }
 524               igdata = peimage+(igdataent->OffsetToData-pe_sections[j].VirtualAddress+pe_sections[j].PointerToRawData);
 525             }
 526
 527             if (!igdata)
 528             {
 529               FIXME("no matching real address for icongroup!\n");
 530               goto end; /* failure */
 531             }
 532             pIconId[i] = LookupIconIdFromDirectoryEx(igdata, TRUE, (i & 1) ? cx2 : cx1, (i & 1) ? cy2 : cy1, flags);
 533           }
 534
 535           if (!(iconresdir=find_entry_by_id(rootresdir,LOWORD(RT_ICON),rootresdir)))
 536           {
 537             WARN("No Iconresourcedirectory!\n");
 538             goto end;           /* failure */
 539           }
 540
 541           for (i=0; i<nIcons; i++)
 542           {
 543             const IMAGE_RESOURCE_DIRECTORY *xresdir;
 544             xresdir = find_entry_by_id(iconresdir, LOWORD(pIconId[i]), rootresdir);
 545             if( !xresdir )
 546             {
 547               WARN("icon entry %d not found\n", LOWORD(pIconId[i]));
 548               RetPtr[i]=0;
 549               continue;
 550             }
 551             xresdir = find_entry_default(xresdir, rootresdir);
 552             idataent = (const IMAGE_RESOURCE_DATA_ENTRY*)xresdir;
 553             idata = NULL;
 554
 555             /* map virtual to address in image */
 556             for (j=0;j<pe_header->FileHeader.NumberOfSections;j++)
 557             {
 558               if (idataent->OffsetToData < pe_sections[j].VirtualAddress)
 559                 continue;
 560               if (idataent->OffsetToData+idataent->Size > pe_sections[j].VirtualAddress+pe_sections[j].SizeOfRawData)
 561                 continue;
 562               idata = peimage+(idataent->OffsetToData-pe_sections[j].VirtualAddress+pe_sections[j].PointerToRawData);
 563             }
 564             if (!idata)
 565             {
 566               WARN("no matching real address found for icondata!\n");
 567               RetPtr[i]=0;
 568               continue;
 569             }
 570             RetPtr[i] = (HICON) CreateIconFromResourceEx(idata,idataent->Size,TRUE,0x00030000,
 571                                                          (i & 1) ? cx2 : cx1, (i & 1) ? cy2 : cy1, flags);
 572           }
 573           ret = i;      /* return number of retrieved icons */
 574         }                       /* if(sig == IMAGE_NT_SIGNATURE) */
 575
 576 end:
 577         UnmapViewOfFile(peimage);       /* success */
 578         return ret;
 579 }
 580
 581 /***********************************************************************
 582  *           PrivateExtractIconsW                       [USER32.@]
 583  *
 584  * NOTES
 585  *  If HIWORD(sizeX) && HIWORD(sizeY) 2 * ((nIcons + 1) MOD 2) icons are
 586  *  returned, with the LOWORD size icon first and the HIWORD size icon
 587  *  second.
 588  *  Also the Windows equivalent does extract icons in a strange way if
 589  *  nIndex is negative. Our implementation treats a negative nIndex as
 590  *  looking for that resource identifier for the first icon to retrieve.
 591  *
 592  * FIXME:
 593  *  should also support 16 bit EXE + DLLs, cursor and animated cursor as
 594  *  well as bitmap files.
 595  */
 596
 597 UINT WINAPI PrivateExtractIconsW (
 598         LPCWSTR lpwstrFile,
 599         int nIndex,
 600         int sizeX,
 601         int sizeY,
 602         HICON * phicon, /* [out] pointer to array of nIcons HICON handles */
 603         UINT* pIconId,  /* [out] pointer to array of nIcons icon identifiers or NULL */
 604         UINT nIcons,    /* [in] number of icons to retrieve */
 605         UINT flags )    /* [in] LR_* flags used by LoadImage */
 606 {
 607         TRACE("%s %d %dx%d %p %p %d 0x%08x\n",
 608               debugstr_w(lpwstrFile), nIndex, sizeX, sizeY, phicon, pIconId, nIcons, flags);
 609
 610         if ((nIcons & 1) && HIWORD(sizeX) && HIWORD(sizeY))
 611         {
 612           WARN("Uneven number %d of icons requested for small and large icons!\n", nIcons);
 613         }
 614         return ICO_ExtractIconExW(lpwstrFile, phicon, nIndex, nIcons, sizeX, sizeY, pIconId, flags);
 615 }
 616
 617 /***********************************************************************
 618  *           PrivateExtractIconsA                       [USER32.@]
 619  */
 620
 621 UINT WINAPI PrivateExtractIconsA (
 622         LPCSTR lpstrFile,
 623         int nIndex,
 624         int sizeX,
 625         int sizeY,
 626         HICON * phicon, /* [out] pointer to array of nIcons HICON handles */
 627         UINT* piconid,  /* [out] pointer to array of nIcons icon identifiers or NULL */
 628         UINT nIcons,    /* [in] number of icons to retrieve */
 629         UINT flags )    /* [in] LR_* flags used by LoadImage */
 630 {
 631     UINT ret;
 632     INT len = MultiByteToWideChar(CP_ACP, 0, lpstrFile, -1, NULL, 0);
 633     LPWSTR lpwstrFile = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR));
 634
 635     MultiByteToWideChar(CP_ACP, 0, lpstrFile, -1, lpwstrFile, len);
 636     ret = PrivateExtractIconsW(lpwstrFile, nIndex, sizeX, sizeY, phicon, piconid, nIcons, flags);
 637
 638     HeapFree(GetProcessHeap(), 0, lpwstrFile);
 639     return ret;
 640 }
 641
 642 /***********************************************************************
 643  *           PrivateExtractIconExW                      [USER32.@]
 644  * NOTES
 645  *  if nIndex == -1 it returns the number of icons in any case !!!
 646  */
 647 UINT WINAPI PrivateExtractIconExW (
 648         LPCWSTR lpwstrFile,
 649         int nIndex,
 650         HICON * phIconLarge,
 651         HICON * phIconSmall,
 652         UINT nIcons )
 653 {
 654         DWORD cyicon, cysmicon, cxicon, cxsmicon;
 655         UINT ret = 0;
 656
 657         TRACE("%s %d %p %p %d\n",
 658         debugstr_w(lpwstrFile),nIndex,phIconLarge, phIconSmall, nIcons);
 659
 660         if (nIndex == -1)
 661           /* get the number of icons */
 662           return ICO_ExtractIconExW(lpwstrFile, NULL, 0, 0, 0, 0, NULL, LR_DEFAULTCOLOR);
 663
 664         if (nIcons == 1 && phIconSmall && phIconLarge)
 665         {
 666           HICON hIcon[2];
 667           cxicon = GetSystemMetrics(SM_CXICON);
 668           cyicon = GetSystemMetrics(SM_CYICON);
 669           cxsmicon = GetSystemMetrics(SM_CXSMICON);
 670           cysmicon = GetSystemMetrics(SM_CYSMICON);
 671
 672           ret = ICO_ExtractIconExW(lpwstrFile, (HICON*) &hIcon, nIndex, 2, cxicon | (cxsmicon<<16),
 673                                    cyicon | (cysmicon<<16), NULL, LR_DEFAULTCOLOR);
 674           *phIconLarge = hIcon[0];
 675           *phIconSmall = hIcon[1];
 676           return ret;
 677         }
 678
 679         if (phIconSmall)
 680         {
 681           /* extract n small icons */
 682           cxsmicon = GetSystemMetrics(SM_CXSMICON);
 683           cysmicon = GetSystemMetrics(SM_CYSMICON);
 684           ret = ICO_ExtractIconExW(lpwstrFile, phIconSmall, nIndex, nIcons, cxsmicon,
 685                                    cysmicon, NULL, LR_DEFAULTCOLOR);
 686         }
 687        if (phIconLarge)
 688         {
 689           /* extract n large icons */
 690           cxicon = GetSystemMetrics(SM_CXICON);
 691           cyicon = GetSystemMetrics(SM_CYICON);
 692          ret = ICO_ExtractIconExW(lpwstrFile, phIconLarge, nIndex, nIcons, cxicon,
 693                                    cyicon, NULL, LR_DEFAULTCOLOR);
 694         }
 695         return ret;
 696 }
 697
 698 /***********************************************************************
 699  *           PrivateExtractIconExA                      [USER32.@]
 700  */
 701 UINT WINAPI PrivateExtractIconExA (
 702         LPCSTR lpstrFile,
 703         int nIndex,
 704         HICON * phIconLarge,
 705         HICON * phIconSmall,
 706         UINT nIcons )
 707 {
 708         UINT ret;
 709         INT len = MultiByteToWideChar(CP_ACP, 0, lpstrFile, -1, NULL, 0);
 710         LPWSTR lpwstrFile = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR));
 711
 712         TRACE("%s %d %p %p %d\n", lpstrFile, nIndex, phIconLarge, phIconSmall, nIcons);
 713
 714         MultiByteToWideChar(CP_ACP, 0, lpstrFile, -1, lpwstrFile, len);
 715         ret = PrivateExtractIconExW(lpwstrFile, nIndex, phIconLarge, phIconSmall, nIcons);
 716         HeapFree(GetProcessHeap(), 0, lpwstrFile);
 717         return ret;
 718 }