dlls/user32/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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, 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 "winuser.h"
  40 #include "wine/winbase16.h"
  41 #include "user_private.h"
  42 #include "wine/debug.h"
  43
  44 WINE_DEFAULT_DEBUG_CHANNEL(icon);
  45
  46 #include "pshpack1.h"
  47
  48 typedef struct
  49 {
  50     BYTE        bWidth;          /* Width, in pixels, of the image      */
  51     BYTE        bHeight;         /* Height, in pixels, of the image     */
  52     BYTE        bColorCount;     /* Number of colors in image (0 if >=8bpp) */
  53     BYTE        bReserved;       /* Reserved ( must be 0)               */
  54     WORD        wPlanes;         /* Color Planes                        */
  55     WORD        wBitCount;       /* Bits per pixel                      */
  56     DWORD       dwBytesInRes;    /* How many bytes in this resource?    */
  57     DWORD       dwImageOffset;   /* Where in the file is this image?    */
  58 } icoICONDIRENTRY, *LPicoICONDIRENTRY;
  59
  60 typedef struct
  61 {
  62     WORD            idReserved;   /* Reserved (must be 0) */
  63     WORD            idType;       /* Resource Type (RES_ICON or RES_CURSOR) */
  64     WORD            idCount;      /* How many images */
  65     icoICONDIRENTRY idEntries[1]; /* An entry for each image (idCount of 'em) */
  66 } icoICONDIR, *LPicoICONDIR;
  67
  68 #include "poppack.h"
  69
  70 #if 0
  71 static void dumpIcoDirEnty ( LPicoICONDIRENTRY entry )
  72 {
  73         TRACE("width = 0x%08x height = 0x%08x\n", entry->bWidth, entry->bHeight);
  74         TRACE("colors = 0x%08x planes = 0x%08x\n", entry->bColorCount, entry->wPlanes);
  75         TRACE("bitcount = 0x%08x bytesinres = 0x%08lx offset = 0x%08lx\n",
  76         entry->wBitCount, entry->dwBytesInRes, entry->dwImageOffset);
  77 }
  78 static void dumpIcoDir ( LPicoICONDIR entry )
  79 {
  80         TRACE("type = 0x%08x count = 0x%08x\n", entry->idType, entry->idCount);
  81 }
  82 #endif
  83
  84 /**********************************************************************
  85  *  find_entry_by_id
  86  *
  87  * Find an entry by id in a resource directory
  88  * Copied from loader/pe_resource.c (FIXME: should use exported resource functions)
  89  */
  90 static const IMAGE_RESOURCE_DIRECTORY *find_entry_by_id( const IMAGE_RESOURCE_DIRECTORY *dir,
  91                                                          WORD id, const void *root )
  92 {
  93     const IMAGE_RESOURCE_DIRECTORY_ENTRY *entry;
  94     int min, max, pos;
  95
  96     entry = (const IMAGE_RESOURCE_DIRECTORY_ENTRY *)(dir + 1);
  97     min = dir->NumberOfNamedEntries;
  98     max = min + dir->NumberOfIdEntries - 1;
  99     while (min <= max)
 100     {
 101         pos = (min + max) / 2;
 102         if (entry[pos].u1.s2.Id == id)
 103             return (const IMAGE_RESOURCE_DIRECTORY *)((const char *)root + entry[pos].u2.s3.OffsetToDirectory);
 104         if (entry[pos].u1.s2.Id > id) max = pos - 1;
 105         else min = pos + 1;
 106     }
 107     return NULL;
 108 }
 109
 110 /**********************************************************************
 111  *  find_entry_default
 112  *
 113  * Find a default entry in a resource directory
 114  * Copied from loader/pe_resource.c (FIXME: should use exported resource functions)
 115  */
 116 static const IMAGE_RESOURCE_DIRECTORY *find_entry_default( const IMAGE_RESOURCE_DIRECTORY *dir,
 117                                                            const void *root )
 118 {
 119     const IMAGE_RESOURCE_DIRECTORY_ENTRY *entry;
 120     entry = (const IMAGE_RESOURCE_DIRECTORY_ENTRY *)(dir + 1);
 121     return (const IMAGE_RESOURCE_DIRECTORY *)((const char *)root + entry->u2.s3.OffsetToDirectory);
 122 }
 123
 124 /*************************************************************************
 125  *                              USER32_GetResourceTable
 126  */
 127 static DWORD USER32_GetResourceTable(LPBYTE peimage,DWORD pesize,LPBYTE *retptr)
 128 {
 129         IMAGE_DOS_HEADER        * mz_header;
 130
 131         TRACE("%p %p\n", peimage, retptr);
 132
 133         *retptr = NULL;
 134
 135         mz_header = (IMAGE_DOS_HEADER*) peimage;
 136
 137         if (mz_header->e_magic != IMAGE_DOS_SIGNATURE)
 138         {
 139           if (mz_header->e_cblp == 1)   /* .ICO file ? */
 140           {
 141             *retptr = (LPBYTE)-1;       /* ICONHEADER.idType, must be 1 */
 142             return 1;
 143           }
 144           else
 145             return 0; /* failed */
 146         }
 147         if (mz_header->e_lfanew >= pesize) {
 148             return 0; /* failed, happens with PKZIP DOS Exes for instance. */
 149         }
 150         if (*((DWORD*)(peimage + mz_header->e_lfanew)) == IMAGE_NT_SIGNATURE )
 151           return IMAGE_NT_SIGNATURE;
 152
 153         if (*((WORD*)(peimage + mz_header->e_lfanew)) == IMAGE_OS2_SIGNATURE )
 154         {
 155           IMAGE_OS2_HEADER      * ne_header;
 156
 157           ne_header = (IMAGE_OS2_HEADER*)(peimage + mz_header->e_lfanew);
 158
 159           if (ne_header->ne_magic != IMAGE_OS2_SIGNATURE)
 160             return 0;
 161
 162           if( (ne_header->ne_restab - ne_header->ne_rsrctab) <= sizeof(NE_TYPEINFO) )
 163             *retptr = (LPBYTE)-1;
 164           else
 165             *retptr = peimage + mz_header->e_lfanew + ne_header->ne_rsrctab;
 166
 167           return IMAGE_OS2_SIGNATURE;
 168         }
 169         return 0; /* failed */
 170 }
 171 /*************************************************************************
 172  *                      USER32_LoadResource
 173  */
 174 static BYTE * USER32_LoadResource( LPBYTE peimage, NE_NAMEINFO* pNInfo, WORD sizeShift, ULONG *uSize)
 175 {
 176         TRACE("%p %p 0x%08x\n", peimage, pNInfo, sizeShift);
 177
 178         *uSize = (DWORD)pNInfo->length << sizeShift;
 179         return peimage + ((DWORD)pNInfo->offset << sizeShift);
 180 }
 181
 182 /*************************************************************************
 183  *                      ICO_LoadIcon
 184  */
 185 static BYTE * ICO_LoadIcon( LPBYTE peimage, LPicoICONDIRENTRY lpiIDE, ULONG *uSize)
 186 {
 187         TRACE("%p %p\n", peimage, lpiIDE);
 188
 189         *uSize = lpiIDE->dwBytesInRes;
 190         return peimage + lpiIDE->dwImageOffset;
 191 }
 192
 193 /*************************************************************************
 194  *                      ICO_GetIconDirectory
 195  *
 196  * Reads .ico file and build phony ICONDIR struct
 197  * see http://www.microsoft.com/win32dev/ui/icons.htm
 198  */
 199 #define HEADER_SIZE             (sizeof(CURSORICONDIR) - sizeof (CURSORICONDIRENTRY))
 200 #define HEADER_SIZE_FILE        (sizeof(icoICONDIR) - sizeof (icoICONDIRENTRY))
 201
 202 static BYTE * ICO_GetIconDirectory( LPBYTE peimage, LPicoICONDIR* lplpiID, ULONG *uSize )
 203 {
 204         CURSORICONDIR   * lpcid;        /* icon resource in resource-dir format */
 205         CURSORICONDIR   * lpID;         /* icon resource in resource format */
 206         int             i;
 207
 208         TRACE("%p %p\n", peimage, lplpiID);
 209
 210         lpcid = (CURSORICONDIR*)peimage;
 211
 212         if( lpcid->idReserved || (lpcid->idType != 1) || (!lpcid->idCount) )
 213           return 0;
 214
 215         /* allocate the phony ICONDIR structure */
 216         *uSize = lpcid->idCount * sizeof(CURSORICONDIRENTRY) + HEADER_SIZE;
 217         if( (lpID = HeapAlloc(GetProcessHeap(),0, *uSize) ))
 218         {
 219           /* copy the header */
 220           lpID->idReserved = lpcid->idReserved;
 221           lpID->idType = lpcid->idType;
 222           lpID->idCount = lpcid->idCount;
 223
 224           /* copy the entries */
 225           for( i=0; i < lpcid->idCount; i++ )
 226           {
 227             memcpy((void*)&(lpID->idEntries[i]),(void*)&(lpcid->idEntries[i]), sizeof(CURSORICONDIRENTRY) - 2);
 228             lpID->idEntries[i].wResId = i;
 229           }
 230
 231           *lplpiID = (LPicoICONDIR)peimage;
 232           return (BYTE *)lpID;
 233         }
 234         return 0;
 235 }
 236
 237 /******************************************************************************
 238  *  struct extract_icons_state [internal]
 239  *
 240  * Used to carry params and state through the iterations of EnumResourceNames in ICO_ExtractIconExW
 241  */
 242 struct extract_icons_state {
 243     INT     nBaseIndex; /* Zero based index or negated integer id of the first icon to extract. */
 244     UINT    nIcons;     /* Number of icons to extract. */
 245     UINT    cxDesired;  /* Desired horizontal size in pixels (Might be two sizes in HI/LOWORD). */
 246     UINT    cyDesired;  /* Desired vertical size in pixels (Might be two sizes in HI/LOWORD). */
 247     UINT    fuLoad;     /* Flags passed to LoadImage. */
 248     INT     cIter;      /* Iteration counter. */
 249     HICON   *pahIcon;   /* Pointer to an array where the icon handles will be stored. */
 250     UINT    *paIconId;  /* Pointer to an array where the icon identifiers will be stored. */
 251 };
 252
 253 /******************************************************************************
 254  *  extract_icons_callback [internal]
 255  *
 256  * Callback function of type ENUMRESNAMEPROC for EnumResourceNames. Used in
 257  * ICO_ExtractIconsExW.
 258  */
 259 static BOOL CALLBACK extract_icons_callback(HMODULE hModule, LPCWSTR pwszType, LPWSTR pwszName,
 260     LONG_PTR lParam)
 261 {
 262     struct extract_icons_state *pState = (struct extract_icons_state *)lParam;
 263     INT idCurrent = (INT)pwszName;
 264
 265     /* If the handle array pointer is NULL, we just count the number of icons in the module. */
 266     if (!pState->pahIcon) {
 267         pState->cIter++;
 268         return TRUE;
 269     }
 270
 271     /* If we didn't already start extracting icons (cIter == 0), we look if the current
 272      * icon is the one we should start with. That's the case if nBaseIndex is negative and
 273      * it's absolute value matches the current icon's identifier. Or if nBaseIndex is positive
 274      * and we already omitted the first nBaseIndex icons. */
 275     if (pState->cIter == 0) {
 276         if (pState->nBaseIndex < 0) {
 277             if (!IS_INTRESOURCE(pwszName) || idCurrent != -pState->nBaseIndex) {
 278                 return TRUE;
 279             }
 280         } else if (pState->nBaseIndex > 0) {
 281             pState->nBaseIndex--;
 282             return TRUE;
 283         }
 284     }
 285
 286     if (pState->cIter < pState->nIcons) {
 287         /* Load the current icon with the size given in the LOWORD of cx/cyDesired */
 288         pState->pahIcon[pState->cIter] =
 289             LoadImageW(hModule, pwszName, IMAGE_ICON, LOWORD(pState->cxDesired),
 290                        LOWORD(pState->cyDesired), pState->fuLoad);
 291         /* FIXME: The resource's identifier (that is not idCurrent, which is the
 292          * identifier of the icon directory) should be stored in paIconId, but I don't
 293          * know how to query for it. */
 294         if (pState->paIconId) pState->paIconId[pState->cIter] = 0;
 295         pState->cIter++;
 296
 297         /* If there is a second desired size given in the HIWORDs of cx/cyDesired, load too.
 298          * There seems to be an off-by-one error here, since pState->cIter might now be equal
 299          * to pState->nIcons, but this is in fact how it works on windows. */
 300         if (HIWORD(pState->cxDesired) && HIWORD(pState->cyDesired)) {
 301             pState->pahIcon[pState->cIter] =
 302                 LoadImageW(hModule, pwszName, IMAGE_ICON, HIWORD(pState->cxDesired),
 303                            HIWORD(pState->cyDesired), pState->fuLoad);
 304             if (pState->paIconId) pState->paIconId[pState->cIter] = 0;
 305             pState->cIter++;
 306         }
 307     }
 308
 309     return pState->cIter < pState->nIcons;
 310 }
 311
 312 /*************************************************************************
 313  *      ICO_ExtractIconExW              [internal]
 314  *
 315  * NOTES
 316  *  nIcons = 0: returns number of Icons in file
 317  *
 318  * returns
 319  *  invalid file: -1
 320  *  failure:0;
 321  *  success: number of icons in file (nIcons = 0) or nr of icons retrieved
 322  */
 323 static UINT ICO_ExtractIconExW(
 324         LPCWSTR lpszExeFileName,
 325         HICON * RetPtr,
 326         INT nIconIndex,
 327         UINT nIcons,
 328         UINT cxDesired,
 329         UINT cyDesired,
 330         UINT *pIconId,
 331         UINT flags)
 332 {
 333         UINT            ret = 0;
 334         UINT            cx1, cx2, cy1, cy2;
 335         LPBYTE          pData;
 336         DWORD           sig;
 337         HANDLE          hFile;
 338         UINT16          iconDirCount = 0,iconCount = 0;
 339         LPBYTE          peimage;
 340         HANDLE          fmapping;
 341         DWORD           fsizeh,fsizel;
 342         WCHAR           szExePath[MAX_PATH];
 343         DWORD           dwSearchReturn;
 344
 345         TRACE("%s, %d, %d %p 0x%08x\n", debugstr_w(lpszExeFileName), nIconIndex, nIcons, pIconId, flags);
 346
 347         dwSearchReturn = SearchPathW(NULL, lpszExeFileName, NULL, sizeof(szExePath) / sizeof(szExePath[0]), szExePath, NULL);
 348         if ((dwSearchReturn == 0) || (dwSearchReturn > sizeof(szExePath) / sizeof(szExePath[0])))
 349         {
 350           /* This is very wine specific: If the user tries to extract icons from system dlls,
 351            * wine's builtin *.dll.so's will not be found (Even if they would be found it wouldn't
 352            * work, since they are not in PE-format). Thus, if the SearchPath call fails, we try
 353            * to load the file with LoadLibrary and extract the icons with LoadImage (via
 354            * EnumResourceNames).
 355            */
 356           struct extract_icons_state state;
 357           HMODULE hDllSo = LoadLibraryW(lpszExeFileName);
 358
 359           if (!hDllSo) {
 360             WARN("File %s not found or path too long\n", debugstr_w(lpszExeFileName));
 361             return -1;
 362           }
 363
 364           state.nBaseIndex = nIconIndex;
 365           state.nIcons = nIcons;
 366           state.cxDesired = cxDesired;
 367           state.cyDesired = cyDesired;
 368           state.fuLoad = flags;
 369           state.cIter = 0;
 370           state.pahIcon = RetPtr;
 371           state.paIconId = pIconId;
 372
 373           EnumResourceNamesW(hDllSo, MAKEINTRESOURCEW(RT_GROUP_ICON), extract_icons_callback,
 374                              (LONG_PTR)&state);
 375           FreeLibrary(hDllSo);
 376
 377           return state.cIter;
 378         }
 379
 380         hFile = CreateFileW(szExePath, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, 0);
 381         if (hFile == INVALID_HANDLE_VALUE) return ret;
 382         fsizel = GetFileSize(hFile,&fsizeh);
 383
 384         /* Map the file */
 385         fmapping = CreateFileMappingW(hFile, NULL, PAGE_READONLY | SEC_COMMIT, 0, 0, NULL);
 386         CloseHandle(hFile);
 387         if (!fmapping)
 388         {
 389           WARN("CreateFileMapping error %d\n", GetLastError() );
 390           return 0xFFFFFFFF;
 391         }
 392
 393         if (!(peimage = MapViewOfFile(fmapping, FILE_MAP_READ, 0, 0, 0)))
 394         {
 395           WARN("MapViewOfFile error %d\n", GetLastError() );
 396           CloseHandle(fmapping);
 397           return 0xFFFFFFFF;
 398         }
 399         CloseHandle(fmapping);
 400
 401         cx1 = LOWORD(cxDesired);
 402         cx2 = HIWORD(cxDesired);
 403         cy1 = LOWORD(cyDesired);
 404         cy2 = HIWORD(cyDesired);
 405
 406         if (pIconId) /* Invalidate first icon identifier */
 407                 *pIconId = 0xFFFFFFFF;
 408
 409         if (!pIconId) /* if no icon identifier array present use the icon handle array as intermediate storage */
 410           pIconId = (UINT*)RetPtr;
 411
 412         sig = USER32_GetResourceTable(peimage, fsizel, &pData);
 413
 414 /* ico file or NE exe/dll*/
 415         if (sig==IMAGE_OS2_SIGNATURE || sig==1) /* .ICO file */
 416         {
 417           BYTE          *pCIDir = 0;
 418           NE_TYPEINFO   *pTInfo = (NE_TYPEINFO*)(pData + 2);
 419           NE_NAMEINFO   *pIconStorage = NULL;
 420           NE_NAMEINFO   *pIconDir = NULL;
 421           LPicoICONDIR  lpiID = NULL;
 422           ULONG         uSize = 0;
 423
 424           TRACE("-- OS2/icon Signature (0x%08x)\n", sig);
 425
 426           if (pData == (BYTE*)-1)
 427           {
 428             pCIDir = ICO_GetIconDirectory(peimage, &lpiID, &uSize);     /* check for .ICO file */
 429             if (pCIDir)
 430             {
 431               iconDirCount = 1; iconCount = lpiID->idCount;
 432               TRACE("-- icon found %p 0x%08x 0x%08x 0x%08x\n", pCIDir, uSize, iconDirCount, iconCount);
 433             }
 434           }
 435           else while (pTInfo->type_id && !(pIconStorage && pIconDir))
 436           {
 437             if (pTInfo->type_id == NE_RSCTYPE_GROUP_ICON)       /* find icon directory and icon repository */
 438             {
 439               iconDirCount = pTInfo->count;
 440               pIconDir = ((NE_NAMEINFO*)(pTInfo + 1));
 441               TRACE("\tfound directory - %i icon families\n", iconDirCount);
 442             }
 443             if (pTInfo->type_id == NE_RSCTYPE_ICON)
 444             {
 445               iconCount = pTInfo->count;
 446               pIconStorage = ((NE_NAMEINFO*)(pTInfo + 1));
 447               TRACE("\ttotal icons - %i\n", iconCount);
 448             }
 449             pTInfo = (NE_TYPEINFO *)((char*)(pTInfo+1)+pTInfo->count*sizeof(NE_NAMEINFO));
 450           }
 451
 452           if ((pIconStorage && pIconDir) || lpiID)        /* load resources and create icons */
 453           {
 454             if (nIcons == 0)
 455             {
 456               ret = iconDirCount;
 457               if (lpiID)        /* *.ico file, deallocate heap pointer*/
 458                 HeapFree(GetProcessHeap(), 0, pCIDir);
 459             }
 460             else if (nIconIndex < iconDirCount)
 461             {
 462               UINT16   i, icon;
 463               if (nIcons > iconDirCount - nIconIndex)
 464                 nIcons = iconDirCount - nIconIndex;
 465
 466               for (i = 0; i < nIcons; i++)
 467               {
 468                 /* .ICO files have only one icon directory */
 469                 if (lpiID == NULL)      /* not *.ico */
 470                   pCIDir = USER32_LoadResource(peimage, pIconDir + i + nIconIndex, *(WORD*)pData, &uSize);
 471                 pIconId[i] = LookupIconIdFromDirectoryEx(pCIDir, TRUE, cx1, cy1, flags);
 472                 if (cx2 && cy2) pIconId[++i] = LookupIconIdFromDirectoryEx(pCIDir, TRUE,  cx2, cy2, flags);
 473               }
 474               if (lpiID)        /* *.ico file, deallocate heap pointer*/
 475                 HeapFree(GetProcessHeap(), 0, pCIDir);
 476
 477               for (icon = 0; icon < nIcons; icon++)
 478               {
 479                 pCIDir = NULL;
 480                 if (lpiID)
 481                   pCIDir = ICO_LoadIcon(peimage, lpiID->idEntries + (int)pIconId[icon], &uSize);
 482                 else
 483                   for (i = 0; i < iconCount; i++)
 484                     if (pIconStorage[i].id == ((int)pIconId[icon] | 0x8000) )
 485                       pCIDir = USER32_LoadResource(peimage, pIconStorage + i, *(WORD*)pData, &uSize);
 486
 487                 if (pCIDir)
 488                 {
 489                   RetPtr[icon] = CreateIconFromResourceEx(pCIDir, uSize, TRUE, 0x00030000,
 490                                                                  cx1, cy1, flags);
 491                   if (cx2 && cy2)
 492                       RetPtr[++icon] = CreateIconFromResourceEx(pCIDir, uSize, TRUE, 0x00030000,
 493                                                                        cx2, cy2, flags);
 494                 }
 495                 else
 496                   RetPtr[icon] = 0;
 497               }
 498               ret = icon;       /* return number of retrieved icons */
 499             }
 500           }
 501         }
 502 /* end ico file */
 503
 504 /* exe/dll */
 505         else if( sig == IMAGE_NT_SIGNATURE )
 506         {
 507           LPBYTE                idata,igdata;
 508           PIMAGE_DOS_HEADER     dheader;
 509           PIMAGE_NT_HEADERS     pe_header;
 510           PIMAGE_SECTION_HEADER pe_sections;
 511           const IMAGE_RESOURCE_DIRECTORY *rootresdir,*iconresdir,*icongroupresdir;
 512           const IMAGE_RESOURCE_DATA_ENTRY *idataent,*igdataent;
 513           const IMAGE_RESOURCE_DIRECTORY_ENTRY *xresent;
 514           UINT  i, j;
 515
 516           dheader = (PIMAGE_DOS_HEADER)peimage;
 517           pe_header = (PIMAGE_NT_HEADERS)(peimage+dheader->e_lfanew);     /* it is a pe header, USER32_GetResourceTable checked that */
 518           pe_sections = (PIMAGE_SECTION_HEADER)(((char*)pe_header) + sizeof(DWORD) + sizeof(IMAGE_FILE_HEADER)
 519                                                 + pe_header->FileHeader.SizeOfOptionalHeader);
 520           rootresdir = NULL;
 521
 522           /* search for the root resource directory */
 523           for (i=0;i<pe_header->FileHeader.NumberOfSections;i++)
 524           {
 525             if (pe_sections[i].Characteristics & IMAGE_SCN_CNT_UNINITIALIZED_DATA)
 526               continue;
 527             if (fsizel < pe_sections[i].PointerToRawData+pe_sections[i].SizeOfRawData) {
 528               FIXME("File %s too short (section is at %d bytes, real size is %d)\n",
 529                       debugstr_w(lpszExeFileName),
 530                       pe_sections[i].PointerToRawData+pe_sections[i].SizeOfRawData,
 531                       fsizel
 532               );
 533               goto end;
 534             }
 535             /* FIXME: doesn't work when the resources are not in a separate section */
 536             if (pe_sections[i].VirtualAddress == pe_header->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_RESOURCE].VirtualAddress)
 537             {
 538               rootresdir = (PIMAGE_RESOURCE_DIRECTORY)(peimage+pe_sections[i].PointerToRawData);
 539               break;
 540             }
 541           }
 542
 543           if (!rootresdir)
 544           {
 545             WARN("haven't found section for resource directory.\n");
 546             goto end;           /* failure */
 547           }
 548
 549           /* search for the group icon directory */
 550           if (!(icongroupresdir = find_entry_by_id(rootresdir, LOWORD(RT_GROUP_ICON), rootresdir)))
 551           {
 552             WARN("No Icongroupresourcedirectory!\n");
 553             goto end;           /* failure */
 554           }
 555           iconDirCount = icongroupresdir->NumberOfNamedEntries + icongroupresdir->NumberOfIdEntries;
 556
 557           /* only number of icons requested */
 558           if( !pIconId )
 559           {
 560             ret = iconDirCount;
 561             goto end;           /* success */
 562           }
 563
 564           if( nIconIndex < 0 )
 565           {
 566             /* search resource id */
 567             int n = 0;
 568             int iId = abs(nIconIndex);
 569             const IMAGE_RESOURCE_DIRECTORY_ENTRY* xprdeTmp = (const IMAGE_RESOURCE_DIRECTORY_ENTRY*)(icongroupresdir+1);
 570
 571             while(n<iconDirCount && xprdeTmp)
 572             {
 573               if(xprdeTmp->u1.s2.Id ==  iId)
 574               {
 575                   nIconIndex = n;
 576                   break;
 577               }
 578               n++;
 579               xprdeTmp++;
 580             }
 581             if (nIconIndex < 0)
 582             {
 583               WARN("resource id %d not found\n", iId);
 584               goto end;         /* failure */
 585             }
 586           }
 587           else
 588           {
 589             /* check nIconIndex to be in range */
 590             if (nIconIndex >= iconDirCount)
 591             {
 592               WARN("nIconIndex %d is larger than iconDirCount %d\n",nIconIndex,iconDirCount);
 593               goto end;         /* failure */
 594             }
 595           }
 596
 597           /* assure we don't get too much */
 598           if( nIcons > iconDirCount - nIconIndex )
 599             nIcons = iconDirCount - nIconIndex;
 600
 601           /* starting from specified index */
 602           xresent = (const IMAGE_RESOURCE_DIRECTORY_ENTRY*)(icongroupresdir+1) + nIconIndex;
 603
 604           for (i=0; i < nIcons; i++,xresent++)
 605           {
 606             const IMAGE_RESOURCE_DIRECTORY *resdir;
 607
 608             /* go down this resource entry, name */
 609             resdir = (const IMAGE_RESOURCE_DIRECTORY *)((const char *)rootresdir + xresent->u2.s3.OffsetToDirectory);
 610
 611             /* default language (0) */
 612             resdir = find_entry_default(resdir,rootresdir);
 613             igdataent = (const IMAGE_RESOURCE_DATA_ENTRY*)resdir;
 614
 615             /* lookup address in mapped image for virtual address */
 616             igdata = NULL;
 617
 618             for (j=0;j<pe_header->FileHeader.NumberOfSections;j++)
 619             {
 620               if (igdataent->OffsetToData < pe_sections[j].VirtualAddress)
 621                 continue;
 622               if (igdataent->OffsetToData+igdataent->Size > pe_sections[j].VirtualAddress+pe_sections[j].SizeOfRawData)
 623                 continue;
 624
 625               if (igdataent->OffsetToData-pe_sections[j].VirtualAddress+pe_sections[j].PointerToRawData+igdataent->Size > fsizel) {
 626                 FIXME("overflow in PE lookup (%s has len %d, have offset %d), short file?\n", debugstr_w(lpszExeFileName), fsizel,
 627                            igdataent->OffsetToData - pe_sections[j].VirtualAddress + pe_sections[j].PointerToRawData + igdataent->Size);
 628                 goto end; /* failure */
 629               }
 630               igdata = peimage+(igdataent->OffsetToData-pe_sections[j].VirtualAddress+pe_sections[j].PointerToRawData);
 631             }
 632
 633             if (!igdata)
 634             {
 635               FIXME("no matching real address for icongroup!\n");
 636               goto end; /* failure */
 637             }
 638             pIconId[i] = LookupIconIdFromDirectoryEx(igdata, TRUE, cx1, cy1, flags);
 639             if (cx2 && cy2) pIconId[++i] = LookupIconIdFromDirectoryEx(igdata, TRUE, cx2, cy2, flags);
 640           }
 641
 642           if (!(iconresdir=find_entry_by_id(rootresdir,LOWORD(RT_ICON),rootresdir)))
 643           {
 644             WARN("No Iconresourcedirectory!\n");
 645             goto end;           /* failure */
 646           }
 647
 648           for (i=0; i<nIcons; i++)
 649           {
 650             const IMAGE_RESOURCE_DIRECTORY *xresdir;
 651             xresdir = find_entry_by_id(iconresdir, LOWORD(pIconId[i]), rootresdir);
 652             if( !xresdir )
 653             {
 654               WARN("icon entry %d not found\n", LOWORD(pIconId[i]));
 655               RetPtr[i]=0;
 656               continue;
 657             }
 658             xresdir = find_entry_default(xresdir, rootresdir);
 659             idataent = (const IMAGE_RESOURCE_DATA_ENTRY*)xresdir;
 660             idata = NULL;
 661
 662             /* map virtual to address in image */
 663             for (j=0;j<pe_header->FileHeader.NumberOfSections;j++)
 664             {
 665               if (idataent->OffsetToData < pe_sections[j].VirtualAddress)
 666                 continue;
 667               if (idataent->OffsetToData+idataent->Size > pe_sections[j].VirtualAddress+pe_sections[j].SizeOfRawData)
 668                 continue;
 669               idata = peimage+(idataent->OffsetToData-pe_sections[j].VirtualAddress+pe_sections[j].PointerToRawData);
 670             }
 671             if (!idata)
 672             {
 673               WARN("no matching real address found for icondata!\n");
 674               RetPtr[i]=0;
 675               continue;
 676             }
 677             RetPtr[i] = CreateIconFromResourceEx(idata, idataent->Size, TRUE, 0x00030000, cx1, cy1, flags);
 678             if (cx2 && cy2)
 679                 RetPtr[++i] = CreateIconFromResourceEx(idata, idataent->Size, TRUE, 0x00030000, cx2, cy2, flags);
 680           }
 681           ret = i;      /* return number of retrieved icons */
 682         }                       /* if(sig == IMAGE_NT_SIGNATURE) */
 683
 684 end:
 685         UnmapViewOfFile(peimage);       /* success */
 686         return ret;
 687 }
 688
 689 /***********************************************************************
 690  *           PrivateExtractIconsW                       [USER32.@]
 691  *
 692  * NOTES
 693  *  If HIWORD(sizeX) && HIWORD(sizeY) 2 * ((nIcons + 1) MOD 2) icons are
 694  *  returned, with the LOWORD size icon first and the HIWORD size icon
 695  *  second.
 696  *  Also the Windows equivalent does extract icons in a strange way if
 697  *  nIndex is negative. Our implementation treats a negative nIndex as
 698  *  looking for that resource identifier for the first icon to retrieve.
 699  *
 700  * FIXME:
 701  *  should also support 16 bit EXE + DLLs, cursor and animated cursor as
 702  *  well as bitmap files.
 703  */
 704
 705 UINT WINAPI PrivateExtractIconsW (
 706         LPCWSTR lpwstrFile,
 707         int nIndex,
 708         int sizeX,
 709         int sizeY,
 710         HICON * phicon, /* [out] pointer to array of nIcons HICON handles */
 711         UINT* pIconId,  /* [out] pointer to array of nIcons icon identifiers or NULL */
 712         UINT nIcons,    /* [in] number of icons to retrieve */
 713         UINT flags )    /* [in] LR_* flags used by LoadImage */
 714 {
 715         TRACE("%s %d %dx%d %p %p %d 0x%08x\n",
 716               debugstr_w(lpwstrFile), nIndex, sizeX, sizeY, phicon, pIconId, nIcons, flags);
 717
 718         if ((nIcons & 1) && HIWORD(sizeX) && HIWORD(sizeY))
 719         {
 720           WARN("Uneven number %d of icons requested for small and large icons!\n", nIcons);
 721         }
 722         return ICO_ExtractIconExW(lpwstrFile, phicon, nIndex, nIcons, sizeX, sizeY, pIconId, flags);
 723 }
 724
 725 /***********************************************************************
 726  *           PrivateExtractIconsA                       [USER32.@]
 727  */
 728
 729 UINT WINAPI PrivateExtractIconsA (
 730         LPCSTR lpstrFile,
 731         int nIndex,
 732         int sizeX,
 733         int sizeY,
 734         HICON * phicon, /* [out] pointer to array of nIcons HICON handles */
 735         UINT* piconid,  /* [out] pointer to array of nIcons icon identifiers or NULL */
 736         UINT nIcons,    /* [in] number of icons to retrieve */
 737         UINT flags )    /* [in] LR_* flags used by LoadImage */
 738 {
 739     UINT ret;
 740     INT len = MultiByteToWideChar(CP_ACP, 0, lpstrFile, -1, NULL, 0);
 741     LPWSTR lpwstrFile = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR));
 742
 743     MultiByteToWideChar(CP_ACP, 0, lpstrFile, -1, lpwstrFile, len);
 744     ret = PrivateExtractIconsW(lpwstrFile, nIndex, sizeX, sizeY, phicon, piconid, nIcons, flags);
 745
 746     HeapFree(GetProcessHeap(), 0, lpwstrFile);
 747     return ret;
 748 }
 749
 750 /***********************************************************************
 751  *           PrivateExtractIconExW                      [USER32.@]
 752  * NOTES
 753  *  if nIndex == -1 it returns the number of icons in any case !!!
 754  */
 755 UINT WINAPI PrivateExtractIconExW (
 756         LPCWSTR lpwstrFile,
 757         int nIndex,
 758         HICON * phIconLarge,
 759         HICON * phIconSmall,
 760         UINT nIcons )
 761 {
 762         DWORD cyicon, cysmicon, cxicon, cxsmicon;
 763         UINT ret = 0;
 764
 765         TRACE("%s %d %p %p %d\n",
 766         debugstr_w(lpwstrFile),nIndex,phIconLarge, phIconSmall, nIcons);
 767
 768         if (nIndex == -1)
 769           /* get the number of icons */
 770           return ICO_ExtractIconExW(lpwstrFile, NULL, 0, 0, 0, 0, NULL, LR_DEFAULTCOLOR);
 771
 772         if (nIcons == 1 && phIconSmall && phIconLarge)
 773         {
 774           HICON hIcon[2];
 775           cxicon = GetSystemMetrics(SM_CXICON);
 776           cyicon = GetSystemMetrics(SM_CYICON);
 777           cxsmicon = GetSystemMetrics(SM_CXSMICON);
 778           cysmicon = GetSystemMetrics(SM_CYSMICON);
 779
 780           ret = ICO_ExtractIconExW(lpwstrFile, (HICON*) &hIcon, nIndex, 2, cxicon | (cxsmicon<<16),
 781                                    cyicon | (cysmicon<<16), NULL, LR_DEFAULTCOLOR);
 782           *phIconLarge = hIcon[0];
 783           *phIconSmall = hIcon[1];
 784           return ret;
 785         }
 786
 787         if (phIconSmall)
 788         {
 789           /* extract n small icons */
 790           cxsmicon = GetSystemMetrics(SM_CXSMICON);
 791           cysmicon = GetSystemMetrics(SM_CYSMICON);
 792           ret = ICO_ExtractIconExW(lpwstrFile, phIconSmall, nIndex, nIcons, cxsmicon,
 793                                    cysmicon, NULL, LR_DEFAULTCOLOR);
 794         }
 795        if (phIconLarge)
 796         {
 797           /* extract n large icons */
 798           cxicon = GetSystemMetrics(SM_CXICON);
 799           cyicon = GetSystemMetrics(SM_CYICON);
 800          ret = ICO_ExtractIconExW(lpwstrFile, phIconLarge, nIndex, nIcons, cxicon,
 801                                    cyicon, NULL, LR_DEFAULTCOLOR);
 802         }
 803         return ret;
 804 }
 805
 806 /***********************************************************************
 807  *           PrivateExtractIconExA                      [USER32.@]
 808  */
 809 UINT WINAPI PrivateExtractIconExA (
 810         LPCSTR lpstrFile,
 811         int nIndex,
 812         HICON * phIconLarge,
 813         HICON * phIconSmall,
 814         UINT nIcons )
 815 {
 816         UINT ret;
 817         INT len = MultiByteToWideChar(CP_ACP, 0, lpstrFile, -1, NULL, 0);
 818         LPWSTR lpwstrFile = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR));
 819
 820         TRACE("%s %d %p %p %d\n", lpstrFile, nIndex, phIconLarge, phIconSmall, nIcons);
 821
 822         MultiByteToWideChar(CP_ACP, 0, lpstrFile, -1, lpwstrFile, len);
 823         ret = PrivateExtractIconExW(lpwstrFile, nIndex, phIconLarge, phIconSmall, nIcons);
 824         HeapFree(GetProcessHeap(), 0, lpwstrFile);
 825         return ret;
 826 }