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