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  *  struct extract_icons_state [internal]
 240  *
 241  * Used to carry params and state through the iterations of EnumResourceNames in ICO_ExtractIconExW
 242  */
 243 struct extract_icons_state {
 244     INT     nBaseIndex; /* Zero based index or negated integer id of the first icon to extract. */
 245     UINT    nIcons;     /* Number of icons to extract. */
 246     UINT    cxDesired;  /* Desired horizontal size in pixels (Might be two sizes in HI/LOWORD). */
 247     UINT    cyDesired;  /* Desired vertical size in pixels (Might be two sizes in HI/LOWORD). */
 248     UINT    fuLoad;     /* Flags passed to LoadImage. */
 249     INT     cIter;      /* Iteration counter. */
 250     HICON   *pahIcon;   /* Pointer to an array where the icon handles will be stored. */
 251     UINT    *paIconId;  /* Pointer to an array where the icon identifiers will be stored. */
 252 };
 253
 254 /******************************************************************************
 255  *  extract_icons_callback [internal]
 256  *
 257  * Callback function of type ENUMRESNAMEPROC for EnumResourceNames. Used in
 258  * ICO_ExtractIconsExW.
 259  */
 260 static BOOL CALLBACK extract_icons_callback(HMODULE hModule, LPCWSTR pwszType, LPWSTR pwszName,
 261     LONG_PTR lParam)
 262 {
 263     struct extract_icons_state *pState = (struct extract_icons_state *)lParam;
 264     INT idCurrent = (INT)pwszName;
 265
 266     /* If the handle array pointer is NULL, we just count the number of icons in the module. */
 267     if (!pState->pahIcon) {
 268         pState->cIter++;
 269         return TRUE;
 270     }
 271
 272     /* If we didn't already start extracting icons (cIter == 0), we look if the current
 273      * icon is the one we should start with. That's the case if nBaseIndex is negative and
 274      * it's absolute value matches the current icon's identifier. Or if nBaseIndex is positive
 275      * and we already omitted the first nBaseIndex icons. */
 276     if (pState->cIter == 0) {
 277         if (pState->nBaseIndex < 0) {
 278             if (!IS_INTRESOURCE(pwszName) || idCurrent != -pState->nBaseIndex) {
 279                 return TRUE;
 280             }
 281         } else if (pState->nBaseIndex > 0) {
 282             pState->nBaseIndex--;
 283             return TRUE;
 284         }
 285     }
 286
 287     if (pState->cIter < pState->nIcons) {
 288         /* Load the current icon with the size given in the LOWORD of cx/cyDesired */
 289         pState->pahIcon[pState->cIter] =
 290             LoadImageW(hModule, pwszName, IMAGE_ICON, LOWORD(pState->cxDesired),
 291                        LOWORD(pState->cyDesired), pState->fuLoad);
 292         /* FIXME: The resource's identifier (that is not idCurrent, which is the
 293          * identifier of the icon directory) should be stored in paIconId, but I don't
 294          * know how to query for it. */
 295         if (pState->paIconId) pState->paIconId[pState->cIter] = 0;
 296         pState->cIter++;
 297
 298         /* If there is a second desired size given in the HIWORDs of cx/cyDesired, load too.
 299          * There seems to be an off-by-one error here, since pState->cIter might now be equal
 300          * to pState->nIcons, but this is in fact how it works on windows. */
 301         if (HIWORD(pState->cxDesired) && HIWORD(pState->cyDesired)) {
 302             pState->pahIcon[pState->cIter] =
 303                 LoadImageW(hModule, pwszName, IMAGE_ICON, HIWORD(pState->cxDesired),
 304                            HIWORD(pState->cyDesired), pState->fuLoad);
 305             if (pState->paIconId) pState->paIconId[pState->cIter] = 0;
 306             pState->cIter++;
 307         }
 308     }
 309
 310     return pState->cIter < pState->nIcons;
 311 }
 312
 313 /*************************************************************************
 314  *      ICO_ExtractIconExW              [internal]
 315  *
 316  * NOTES
 317  *  nIcons = 0: returns number of Icons in file
 318  *
 319  * returns
 320  *  invalid file: -1
 321  *  failure:0;
 322  *  success: number of icons in file (nIcons = 0) or nr of icons retrieved
 323  */
 324 static UINT ICO_ExtractIconExW(
 325         LPCWSTR lpszExeFileName,
 326         HICON * RetPtr,
 327         INT nIconIndex,
 328         UINT nIcons,
 329         UINT cxDesired,
 330         UINT cyDesired,
 331         UINT *pIconId,
 332         UINT flags)
 333 {
 334         UINT            ret = 0;
 335         UINT            cx1, cx2, cy1, cy2;
 336         LPBYTE          pData;
 337         DWORD           sig;
 338         HANDLE          hFile;
 339         UINT16          iconDirCount = 0,iconCount = 0;
 340         LPBYTE          peimage;
 341         HANDLE          fmapping;
 342         ULONG           uSize;
 343         DWORD           fsizeh,fsizel;
 344         WCHAR           szExePath[MAX_PATH];
 345         DWORD           dwSearchReturn;
 346
 347         TRACE("%s, %d, %d %p 0x%08x\n", debugstr_w(lpszExeFileName), nIconIndex, nIcons, pIconId, flags);
 348
 349         dwSearchReturn = SearchPathW(NULL, lpszExeFileName, NULL, sizeof(szExePath) / sizeof(szExePath[0]), szExePath, NULL);
 350         if ((dwSearchReturn == 0) || (dwSearchReturn > sizeof(szExePath) / sizeof(szExePath[0])))
 351         {
 352           /* This is very wine specific: If the user tries to extract icon's from system dlls,
 353            * wine's build-in *.dll.so's will not be found (Even if they would be found it wouldn't
 354            * work, since they are not in PE-format). Thus, if the SearchPath call fails, we try
 355            * to load the file with LoadLibary and extract the icons with LoadImage (via
 356            * EnumResourceNames).
 357            */
 358           struct extract_icons_state state;
 359           HMODULE hDllSo = LoadLibraryW(lpszExeFileName);
 360
 361           if (!hDllSo) {
 362             WARN("File %s not found or path too long\n", debugstr_w(lpszExeFileName));
 363             return -1;
 364           }
 365
 366           state.nBaseIndex = nIconIndex;
 367           state.nIcons = nIcons;
 368           state.cxDesired = cxDesired;
 369           state.cyDesired = cyDesired;
 370           state.fuLoad = flags;
 371           state.cIter = 0;
 372           state.pahIcon = RetPtr;
 373           state.paIconId = pIconId;
 374
 375           EnumResourceNamesW(hDllSo, MAKEINTRESOURCEW(RT_GROUP_ICON), extract_icons_callback,
 376                              (LONG_PTR)&state);
 377           FreeLibrary(hDllSo);
 378
 379           return state.cIter;
 380         }
 381
 382         hFile = CreateFileW(szExePath, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, 0);
 383         if (hFile == INVALID_HANDLE_VALUE) return ret;
 384         fsizel = GetFileSize(hFile,&fsizeh);
 385
 386         /* Map the file */
 387         fmapping = CreateFileMappingW(hFile, NULL, PAGE_READONLY | SEC_COMMIT, 0, 0, NULL);
 388         CloseHandle(hFile);
 389         if (!fmapping)
 390         {
 391           WARN("CreateFileMapping error %ld\n", GetLastError() );
 392           return 0xFFFFFFFF;
 393         }
 394
 395         if (!(peimage = MapViewOfFile(fmapping, FILE_MAP_READ, 0, 0, 0)))
 396         {
 397           WARN("MapViewOfFile error %ld\n", GetLastError() );
 398           CloseHandle(fmapping);
 399           return 0xFFFFFFFF;
 400         }
 401         CloseHandle(fmapping);
 402
 403         cx1 = LOWORD(cxDesired);
 404         cx2 = HIWORD(cxDesired) ? HIWORD(cxDesired) : cx1;
 405         cy1 = LOWORD(cyDesired);
 406         cy2 = HIWORD(cyDesired) ? HIWORD(cyDesired) : cy1;
 407
 408         if (pIconId) /* Invalidate first icon identifier */
 409                 *pIconId = 0xFFFFFFFF;
 410
 411         if (!pIconId) /* if no icon identifier array present use the icon handle array as intermediate storage */
 412           pIconId = (UINT*)RetPtr;
 413
 414         sig = USER32_GetResourceTable(peimage, fsizel, &pData);
 415
 416 /* ico file or NE exe/dll*/
 417         if (sig==IMAGE_OS2_SIGNATURE || sig==1) /* .ICO file */
 418         {
 419           BYTE          *pCIDir = 0;
 420           NE_TYPEINFO   *pTInfo = (NE_TYPEINFO*)(pData + 2);
 421           NE_NAMEINFO   *pIconStorage = NULL;
 422           NE_NAMEINFO   *pIconDir = NULL;
 423           LPicoICONDIR  lpiID = NULL;
 424
 425           TRACE("-- OS2/icon Signature (0x%08lx)\n", sig);
 426
 427           if (pData == (BYTE*)-1)
 428           {
 429             pCIDir = ICO_GetIconDirectory(peimage, &lpiID, &uSize);     /* check for .ICO file */
 430             if (pCIDir)
 431             {
 432               iconDirCount = 1; iconCount = lpiID->idCount;
 433               TRACE("-- icon found %p 0x%08lx 0x%08x 0x%08x\n", pCIDir, uSize, iconDirCount, iconCount);
 434             }
 435           }
 436           else while (pTInfo->type_id && !(pIconStorage && pIconDir))
 437           {
 438             if (pTInfo->type_id == NE_RSCTYPE_GROUP_ICON)       /* find icon directory and icon repository */
 439             {
 440               iconDirCount = pTInfo->count;
 441               pIconDir = ((NE_NAMEINFO*)(pTInfo + 1));
 442               TRACE("\tfound directory - %i icon families\n", iconDirCount);
 443             }
 444             if (pTInfo->type_id == NE_RSCTYPE_ICON)
 445             {
 446               iconCount = pTInfo->count;
 447               pIconStorage = ((NE_NAMEINFO*)(pTInfo + 1));
 448               TRACE("\ttotal icons - %i\n", iconCount);
 449             }
 450             pTInfo = (NE_TYPEINFO *)((char*)(pTInfo+1)+pTInfo->count*sizeof(NE_NAMEINFO));
 451           }
 452
 453           if ((pIconStorage && pIconDir) || lpiID)        /* load resources and create icons */
 454           {
 455             if (nIcons == 0)
 456             {
 457               ret = iconDirCount;
 458               if (lpiID && pCIDir)      /* *.ico file, deallocate heap pointer*/
 459                 HeapFree(GetProcessHeap(), 0, pCIDir);
 460             }
 461             else if (nIconIndex < iconDirCount)
 462             {
 463               UINT16   i, icon;
 464               if (nIcons > iconDirCount - nIconIndex)
 465                 nIcons = iconDirCount - nIconIndex;
 466
 467               for (i = 0; i < nIcons; i++)
 468               {
 469                 /* .ICO files have only one icon directory */
 470                 if (lpiID == NULL)      /* not *.ico */
 471                   pCIDir = USER32_LoadResource(peimage, pIconDir + i + nIconIndex, *(WORD*)pData, &uSize);
 472                 pIconId[i] = LookupIconIdFromDirectoryEx(pCIDir, TRUE, (i & 1) ? cx2 : cx1, (i & 1) ? cy2 : cy1, flags);
 473               }
 474               if (lpiID && pCIDir)      /* *.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                   RetPtr[icon] = (HICON)CreateIconFromResourceEx(pCIDir, uSize, TRUE, 0x00030000,
 489                                                                  (icon & 1) ? cx2 : cx1, (icon & 1) ? cy2 : cy1, flags);
 490                 else
 491                   RetPtr[icon] = 0;
 492               }
 493               ret = icon;       /* return number of retrieved icons */
 494             }
 495           }
 496         }
 497 /* end ico file */
 498
 499 /* exe/dll */
 500         else if( sig == IMAGE_NT_SIGNATURE )
 501         {
 502           LPBYTE                idata,igdata;
 503           PIMAGE_DOS_HEADER     dheader;
 504           PIMAGE_NT_HEADERS     pe_header;
 505           PIMAGE_SECTION_HEADER pe_sections;
 506           const IMAGE_RESOURCE_DIRECTORY *rootresdir,*iconresdir,*icongroupresdir;
 507           const IMAGE_RESOURCE_DATA_ENTRY *idataent,*igdataent;
 508           const IMAGE_RESOURCE_DIRECTORY_ENTRY *xresent;
 509           UINT  i, j;
 510
 511           dheader = (PIMAGE_DOS_HEADER)peimage;
 512           pe_header = (PIMAGE_NT_HEADERS)(peimage+dheader->e_lfanew);     /* it is a pe header, USER32_GetResourceTable checked that */
 513           pe_sections = (PIMAGE_SECTION_HEADER)(((char*)pe_header) + sizeof(DWORD) + sizeof(IMAGE_FILE_HEADER)
 514                                                 + pe_header->FileHeader.SizeOfOptionalHeader);
 515           rootresdir = NULL;
 516
 517           /* search for the root resource directory */
 518           for (i=0;i<pe_header->FileHeader.NumberOfSections;i++)
 519           {
 520             if (pe_sections[i].Characteristics & IMAGE_SCN_CNT_UNINITIALIZED_DATA)
 521               continue;
 522             if (fsizel < pe_sections[i].PointerToRawData+pe_sections[i].SizeOfRawData) {
 523               FIXME("File %s too short (section is at %ld bytes, real size is %ld)\n",
 524                       debugstr_w(lpszExeFileName),
 525                       pe_sections[i].PointerToRawData+pe_sections[i].SizeOfRawData,
 526                       fsizel
 527               );
 528               goto end;
 529             }
 530             /* FIXME: doesn't work when the resources are not in a separate section */
 531             if (pe_sections[i].VirtualAddress == pe_header->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_RESOURCE].VirtualAddress)
 532             {
 533               rootresdir = (PIMAGE_RESOURCE_DIRECTORY)(peimage+pe_sections[i].PointerToRawData);
 534               break;
 535             }
 536           }
 537
 538           if (!rootresdir)
 539           {
 540             WARN("haven't found section for resource directory.\n");
 541             goto end;           /* failure */
 542           }
 543
 544           /* search for the group icon directory */
 545           if (!(icongroupresdir = find_entry_by_id(rootresdir, LOWORD(RT_GROUP_ICON), rootresdir)))
 546           {
 547             WARN("No Icongroupresourcedirectory!\n");
 548             goto end;           /* failure */
 549           }
 550           iconDirCount = icongroupresdir->NumberOfNamedEntries + icongroupresdir->NumberOfIdEntries;
 551
 552           /* only number of icons requested */
 553           if( nIcons == 0 )
 554           {
 555             ret = iconDirCount;
 556             goto end;           /* success */
 557           }
 558
 559           if( nIconIndex < 0 )
 560           {
 561             /* search resource id */
 562             int n = 0;
 563             int iId = abs(nIconIndex);
 564             const IMAGE_RESOURCE_DIRECTORY_ENTRY* xprdeTmp = (const IMAGE_RESOURCE_DIRECTORY_ENTRY*)(icongroupresdir+1);
 565
 566             while(n<iconDirCount && xprdeTmp)
 567             {
 568               if(xprdeTmp->u1.s2.Id ==  iId)
 569               {
 570                   nIconIndex = n;
 571                   break;
 572               }
 573               n++;
 574               xprdeTmp++;
 575             }
 576             if (nIconIndex < 0)
 577             {
 578               WARN("resource id %d not found\n", iId);
 579               goto end;         /* failure */
 580             }
 581           }
 582           else
 583           {
 584             /* check nIconIndex to be in range */
 585             if (nIconIndex >= iconDirCount)
 586             {
 587               WARN("nIconIndex %d is larger than iconDirCount %d\n",nIconIndex,iconDirCount);
 588               goto end;         /* failure */
 589             }
 590           }
 591
 592           /* assure we don't get too much */
 593           if( nIcons > iconDirCount - nIconIndex )
 594             nIcons = iconDirCount - nIconIndex;
 595
 596           /* starting from specified index */
 597           xresent = (const IMAGE_RESOURCE_DIRECTORY_ENTRY*)(icongroupresdir+1) + nIconIndex;
 598
 599           for (i=0; i < nIcons; i++,xresent++)
 600           {
 601             const IMAGE_RESOURCE_DIRECTORY *resdir;
 602
 603             /* go down this resource entry, name */
 604             resdir = (PIMAGE_RESOURCE_DIRECTORY)((char *)rootresdir + xresent->u2.s3.OffsetToDirectory);
 605
 606             /* default language (0) */
 607             resdir = find_entry_default(resdir,rootresdir);
 608             igdataent = (const IMAGE_RESOURCE_DATA_ENTRY*)resdir;
 609
 610             /* lookup address in mapped image for virtual address */
 611             igdata = NULL;
 612
 613             for (j=0;j<pe_header->FileHeader.NumberOfSections;j++)
 614             {
 615               if (igdataent->OffsetToData < pe_sections[j].VirtualAddress)
 616                 continue;
 617               if (igdataent->OffsetToData+igdataent->Size > pe_sections[j].VirtualAddress+pe_sections[j].SizeOfRawData)
 618                 continue;
 619
 620               if (igdataent->OffsetToData-pe_sections[j].VirtualAddress+pe_sections[j].PointerToRawData+igdataent->Size > fsizel) {
 621                 FIXME("overflow in PE lookup (%s has len %ld, have offset %ld), short file?\n", debugstr_w(lpszExeFileName), fsizel,
 622                            igdataent->OffsetToData - pe_sections[j].VirtualAddress + pe_sections[j].PointerToRawData + igdataent->Size);
 623                 goto end; /* failure */
 624               }
 625               igdata = peimage+(igdataent->OffsetToData-pe_sections[j].VirtualAddress+pe_sections[j].PointerToRawData);
 626             }
 627
 628             if (!igdata)
 629             {
 630               FIXME("no matching real address for icongroup!\n");
 631               goto end; /* failure */
 632             }
 633             pIconId[i] = LookupIconIdFromDirectoryEx(igdata, TRUE, (i & 1) ? cx2 : cx1, (i & 1) ? cy2 : cy1, flags);
 634           }
 635
 636           if (!(iconresdir=find_entry_by_id(rootresdir,LOWORD(RT_ICON),rootresdir)))
 637           {
 638             WARN("No Iconresourcedirectory!\n");
 639             goto end;           /* failure */
 640           }
 641
 642           for (i=0; i<nIcons; i++)
 643           {
 644             const IMAGE_RESOURCE_DIRECTORY *xresdir;
 645             xresdir = find_entry_by_id(iconresdir, LOWORD(pIconId[i]), rootresdir);
 646             if( !xresdir )
 647             {
 648               WARN("icon entry %d not found\n", LOWORD(pIconId[i]));
 649               RetPtr[i]=0;
 650               continue;
 651             }
 652             xresdir = find_entry_default(xresdir, rootresdir);
 653             idataent = (const IMAGE_RESOURCE_DATA_ENTRY*)xresdir;
 654             idata = NULL;
 655
 656             /* map virtual to address in image */
 657             for (j=0;j<pe_header->FileHeader.NumberOfSections;j++)
 658             {
 659               if (idataent->OffsetToData < pe_sections[j].VirtualAddress)
 660                 continue;
 661               if (idataent->OffsetToData+idataent->Size > pe_sections[j].VirtualAddress+pe_sections[j].SizeOfRawData)
 662                 continue;
 663               idata = peimage+(idataent->OffsetToData-pe_sections[j].VirtualAddress+pe_sections[j].PointerToRawData);
 664             }
 665             if (!idata)
 666             {
 667               WARN("no matching real address found for icondata!\n");
 668               RetPtr[i]=0;
 669               continue;
 670             }
 671             RetPtr[i] = (HICON) CreateIconFromResourceEx(idata,idataent->Size,TRUE,0x00030000,
 672                                                          (i & 1) ? cx2 : cx1, (i & 1) ? cy2 : cy1, flags);
 673           }
 674           ret = i;      /* return number of retrieved icons */
 675         }                       /* if(sig == IMAGE_NT_SIGNATURE) */
 676
 677 end:
 678         UnmapViewOfFile(peimage);       /* success */
 679         return ret;
 680 }
 681
 682 /***********************************************************************
 683  *           PrivateExtractIconsW                       [USER32.@]
 684  *
 685  * NOTES
 686  *  If HIWORD(sizeX) && HIWORD(sizeY) 2 * ((nIcons + 1) MOD 2) icons are
 687  *  returned, with the LOWORD size icon first and the HIWORD size icon
 688  *  second.
 689  *  Also the Windows equivalent does extract icons in a strange way if
 690  *  nIndex is negative. Our implementation treats a negative nIndex as
 691  *  looking for that resource identifier for the first icon to retrieve.
 692  *
 693  * FIXME:
 694  *  should also support 16 bit EXE + DLLs, cursor and animated cursor as
 695  *  well as bitmap files.
 696  */
 697
 698 UINT WINAPI PrivateExtractIconsW (
 699         LPCWSTR lpwstrFile,
 700         int nIndex,
 701         int sizeX,
 702         int sizeY,
 703         HICON * phicon, /* [out] pointer to array of nIcons HICON handles */
 704         UINT* pIconId,  /* [out] pointer to array of nIcons icon identifiers or NULL */
 705         UINT nIcons,    /* [in] number of icons to retrieve */
 706         UINT flags )    /* [in] LR_* flags used by LoadImage */
 707 {
 708         TRACE("%s %d %dx%d %p %p %d 0x%08x\n",
 709               debugstr_w(lpwstrFile), nIndex, sizeX, sizeY, phicon, pIconId, nIcons, flags);
 710
 711         if ((nIcons & 1) && HIWORD(sizeX) && HIWORD(sizeY))
 712         {
 713           WARN("Uneven number %d of icons requested for small and large icons!\n", nIcons);
 714         }
 715         return ICO_ExtractIconExW(lpwstrFile, phicon, nIndex, nIcons, sizeX, sizeY, pIconId, flags);
 716 }
 717
 718 /***********************************************************************
 719  *           PrivateExtractIconsA                       [USER32.@]
 720  */
 721
 722 UINT WINAPI PrivateExtractIconsA (
 723         LPCSTR lpstrFile,
 724         int nIndex,
 725         int sizeX,
 726         int sizeY,
 727         HICON * phicon, /* [out] pointer to array of nIcons HICON handles */
 728         UINT* piconid,  /* [out] pointer to array of nIcons icon identifiers or NULL */
 729         UINT nIcons,    /* [in] number of icons to retrieve */
 730         UINT flags )    /* [in] LR_* flags used by LoadImage */
 731 {
 732     UINT ret;
 733     INT len = MultiByteToWideChar(CP_ACP, 0, lpstrFile, -1, NULL, 0);
 734     LPWSTR lpwstrFile = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR));
 735
 736     MultiByteToWideChar(CP_ACP, 0, lpstrFile, -1, lpwstrFile, len);
 737     ret = PrivateExtractIconsW(lpwstrFile, nIndex, sizeX, sizeY, phicon, piconid, nIcons, flags);
 738
 739     HeapFree(GetProcessHeap(), 0, lpwstrFile);
 740     return ret;
 741 }
 742
 743 /***********************************************************************
 744  *           PrivateExtractIconExW                      [USER32.@]
 745  * NOTES
 746  *  if nIndex == -1 it returns the number of icons in any case !!!
 747  */
 748 UINT WINAPI PrivateExtractIconExW (
 749         LPCWSTR lpwstrFile,
 750         int nIndex,
 751         HICON * phIconLarge,
 752         HICON * phIconSmall,
 753         UINT nIcons )
 754 {
 755         DWORD cyicon, cysmicon, cxicon, cxsmicon;
 756         UINT ret = 0;
 757
 758         TRACE("%s %d %p %p %d\n",
 759         debugstr_w(lpwstrFile),nIndex,phIconLarge, phIconSmall, nIcons);
 760
 761         if (nIndex == -1)
 762           /* get the number of icons */
 763           return ICO_ExtractIconExW(lpwstrFile, NULL, 0, 0, 0, 0, NULL, LR_DEFAULTCOLOR);
 764
 765         if (nIcons == 1 && phIconSmall && phIconLarge)
 766         {
 767           HICON hIcon[2];
 768           cxicon = GetSystemMetrics(SM_CXICON);
 769           cyicon = GetSystemMetrics(SM_CYICON);
 770           cxsmicon = GetSystemMetrics(SM_CXSMICON);
 771           cysmicon = GetSystemMetrics(SM_CYSMICON);
 772
 773           ret = ICO_ExtractIconExW(lpwstrFile, (HICON*) &hIcon, nIndex, 2, cxicon | (cxsmicon<<16),
 774                                    cyicon | (cysmicon<<16), NULL, LR_DEFAULTCOLOR);
 775           *phIconLarge = hIcon[0];
 776           *phIconSmall = hIcon[1];
 777           return ret;
 778         }
 779
 780         if (phIconSmall)
 781         {
 782           /* extract n small icons */
 783           cxsmicon = GetSystemMetrics(SM_CXSMICON);
 784           cysmicon = GetSystemMetrics(SM_CYSMICON);
 785           ret = ICO_ExtractIconExW(lpwstrFile, phIconSmall, nIndex, nIcons, cxsmicon,
 786                                    cysmicon, NULL, LR_DEFAULTCOLOR);
 787         }
 788        if (phIconLarge)
 789         {
 790           /* extract n large icons */
 791           cxicon = GetSystemMetrics(SM_CXICON);
 792           cyicon = GetSystemMetrics(SM_CYICON);
 793          ret = ICO_ExtractIconExW(lpwstrFile, phIconLarge, nIndex, nIcons, cxicon,
 794                                    cyicon, NULL, LR_DEFAULTCOLOR);
 795         }
 796         return ret;
 797 }
 798
 799 /***********************************************************************
 800  *           PrivateExtractIconExA                      [USER32.@]
 801  */
 802 UINT WINAPI PrivateExtractIconExA (
 803         LPCSTR lpstrFile,
 804         int nIndex,
 805         HICON * phIconLarge,
 806         HICON * phIconSmall,
 807         UINT nIcons )
 808 {
 809         UINT ret;
 810         INT len = MultiByteToWideChar(CP_ACP, 0, lpstrFile, -1, NULL, 0);
 811         LPWSTR lpwstrFile = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR));
 812
 813         TRACE("%s %d %p %p %d\n", lpstrFile, nIndex, phIconLarge, phIconSmall, nIcons);
 814
 815         MultiByteToWideChar(CP_ACP, 0, lpstrFile, -1, lpwstrFile, len);
 816         ret = PrivateExtractIconExW(lpwstrFile, nIndex, phIconLarge, phIconSmall, nIcons);
 817         HeapFree(GetProcessHeap(), 0, lpwstrFile);
 818         return ret;
 819 }