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 "winnls.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 typedef struct
  69 {
  70     WORD offset;
  71     WORD length;
  72     WORD flags;
  73     WORD id;
  74     WORD handle;
  75     WORD usage;
  76 } NE_NAMEINFO;
  77
  78 typedef struct
  79 {
  80     WORD  type_id;
  81     WORD  count;
  82     DWORD resloader;
  83 } NE_TYPEINFO;
  84
  85 #define NE_RSCTYPE_ICON        0x8003
  86 #define NE_RSCTYPE_GROUP_ICON  0x800e
  87
  88 #include "poppack.h"
  89
  90 #if 0
  91 static void dumpIcoDirEnty ( LPicoICONDIRENTRY entry )
  92 {
  93         TRACE("width = 0x%08x height = 0x%08x\n", entry->bWidth, entry->bHeight);
  94         TRACE("colors = 0x%08x planes = 0x%08x\n", entry->bColorCount, entry->wPlanes);
  95         TRACE("bitcount = 0x%08x bytesinres = 0x%08lx offset = 0x%08lx\n",
  96         entry->wBitCount, entry->dwBytesInRes, entry->dwImageOffset);
  97 }
  98 static void dumpIcoDir ( LPicoICONDIR entry )
  99 {
 100         TRACE("type = 0x%08x count = 0x%08x\n", entry->idType, entry->idCount);
 101 }
 102 #endif
 103
 104 /**********************************************************************
 105  *  find_entry_by_id
 106  *
 107  * Find an entry by id in a resource directory
 108  * Copied from loader/pe_resource.c (FIXME: should use exported resource functions)
 109  */
 110 static const IMAGE_RESOURCE_DIRECTORY *find_entry_by_id( const IMAGE_RESOURCE_DIRECTORY *dir,
 111                                                          WORD id, const void *root )
 112 {
 113     const IMAGE_RESOURCE_DIRECTORY_ENTRY *entry;
 114     int min, max, pos;
 115
 116     entry = (const IMAGE_RESOURCE_DIRECTORY_ENTRY *)(dir + 1);
 117     min = dir->NumberOfNamedEntries;
 118     max = min + dir->NumberOfIdEntries - 1;
 119     while (min <= max)
 120     {
 121         pos = (min + max) / 2;
 122         if (entry[pos].u1.s2.Id == id)
 123             return (const IMAGE_RESOURCE_DIRECTORY *)((const char *)root + entry[pos].u2.s3.OffsetToDirectory);
 124         if (entry[pos].u1.s2.Id > id) max = pos - 1;
 125         else min = pos + 1;
 126     }
 127     return NULL;
 128 }
 129
 130 /**********************************************************************
 131  *  find_entry_default
 132  *
 133  * Find a default entry in a resource directory
 134  * Copied from loader/pe_resource.c (FIXME: should use exported resource functions)
 135  */
 136 static const IMAGE_RESOURCE_DIRECTORY *find_entry_default( const IMAGE_RESOURCE_DIRECTORY *dir,
 137                                                            const void *root )
 138 {
 139     const IMAGE_RESOURCE_DIRECTORY_ENTRY *entry;
 140     entry = (const IMAGE_RESOURCE_DIRECTORY_ENTRY *)(dir + 1);
 141     return (const IMAGE_RESOURCE_DIRECTORY *)((const char *)root + entry->u2.s3.OffsetToDirectory);
 142 }
 143
 144 /*************************************************************************
 145  *                              USER32_GetResourceTable
 146  */
 147 static DWORD USER32_GetResourceTable(LPBYTE peimage,DWORD pesize,LPBYTE *retptr)
 148 {
 149         IMAGE_DOS_HEADER        * mz_header;
 150
 151         TRACE("%p %p\n", peimage, retptr);
 152
 153         *retptr = NULL;
 154
 155         mz_header = (IMAGE_DOS_HEADER*) peimage;
 156
 157         if (mz_header->e_magic != IMAGE_DOS_SIGNATURE)
 158         {
 159           if (mz_header->e_cblp == 1)   /* .ICO file ? */
 160           {
 161             *retptr = (LPBYTE)-1;       /* ICONHEADER.idType, must be 1 */
 162             return 1;
 163           }
 164           else
 165             return 0; /* failed */
 166         }
 167         if (mz_header->e_lfanew >= pesize) {
 168             return 0; /* failed, happens with PKZIP DOS Exes for instance. */
 169         }
 170         if (*((DWORD*)(peimage + mz_header->e_lfanew)) == IMAGE_NT_SIGNATURE )
 171           return IMAGE_NT_SIGNATURE;
 172
 173         if (*((WORD*)(peimage + mz_header->e_lfanew)) == IMAGE_OS2_SIGNATURE )
 174         {
 175           IMAGE_OS2_HEADER      * ne_header;
 176
 177           ne_header = (IMAGE_OS2_HEADER*)(peimage + mz_header->e_lfanew);
 178
 179           if (ne_header->ne_magic != IMAGE_OS2_SIGNATURE)
 180             return 0;
 181
 182           if( (ne_header->ne_restab - ne_header->ne_rsrctab) <= sizeof(NE_TYPEINFO) )
 183             *retptr = (LPBYTE)-1;
 184           else
 185             *retptr = peimage + mz_header->e_lfanew + ne_header->ne_rsrctab;
 186
 187           return IMAGE_OS2_SIGNATURE;
 188         }
 189         return 0; /* failed */
 190 }
 191 /*************************************************************************
 192  *                      USER32_LoadResource
 193  */
 194 static BYTE * USER32_LoadResource( LPBYTE peimage, NE_NAMEINFO* pNInfo, WORD sizeShift, ULONG *uSize)
 195 {
 196         TRACE("%p %p 0x%08x\n", peimage, pNInfo, sizeShift);
 197
 198         *uSize = (DWORD)pNInfo->length << sizeShift;
 199         return peimage + ((DWORD)pNInfo->offset << sizeShift);
 200 }
 201
 202 /*************************************************************************
 203  *                      ICO_LoadIcon
 204  */
 205 static BYTE * ICO_LoadIcon( LPBYTE peimage, LPicoICONDIRENTRY lpiIDE, ULONG *uSize)
 206 {
 207         TRACE("%p %p\n", peimage, lpiIDE);
 208
 209         *uSize = lpiIDE->dwBytesInRes;
 210         return peimage + lpiIDE->dwImageOffset;
 211 }
 212
 213 /*************************************************************************
 214  *                      ICO_GetIconDirectory
 215  *
 216  * Reads .ico file and build phony ICONDIR struct
 217  */
 218 #define HEADER_SIZE             (sizeof(CURSORICONDIR) - sizeof (CURSORICONDIRENTRY))
 219 #define HEADER_SIZE_FILE        (sizeof(icoICONDIR) - sizeof (icoICONDIRENTRY))
 220
 221 static BYTE * ICO_GetIconDirectory( LPBYTE peimage, LPicoICONDIR* lplpiID, ULONG *uSize )
 222 {
 223         CURSORICONDIR   * lpcid;        /* icon resource in resource-dir format */
 224         CURSORICONDIR   * lpID;         /* icon resource in resource format */
 225         int             i;
 226
 227         TRACE("%p %p\n", peimage, lplpiID);
 228
 229         lpcid = (CURSORICONDIR*)peimage;
 230
 231         if( lpcid->idReserved || (lpcid->idType != 1) || (!lpcid->idCount) )
 232           return 0;
 233
 234         /* allocate the phony ICONDIR structure */
 235         *uSize = lpcid->idCount * sizeof(CURSORICONDIRENTRY) + HEADER_SIZE;
 236         if( (lpID = HeapAlloc(GetProcessHeap(),0, *uSize) ))
 237         {
 238           /* copy the header */
 239           lpID->idReserved = lpcid->idReserved;
 240           lpID->idType = lpcid->idType;
 241           lpID->idCount = lpcid->idCount;
 242
 243           /* copy the entries */
 244           for( i=0; i < lpcid->idCount; i++ )
 245           {
 246             memcpy(&lpID->idEntries[i], &lpcid->idEntries[i], sizeof(CURSORICONDIRENTRY) - 2);
 247             lpID->idEntries[i].wResId = i;
 248           }
 249
 250           *lplpiID = (LPicoICONDIR)peimage;
 251           return (BYTE *)lpID;
 252         }
 253         return 0;
 254 }
 255
 256 /*************************************************************************
 257  *      ICO_ExtractIconExW              [internal]
 258  *
 259  * NOTES
 260  *  nIcons = 0: returns number of Icons in file
 261  *
 262  * returns
 263  *  invalid file: -1
 264  *  failure:0;
 265  *  success: number of icons in file (nIcons = 0) or nr of icons retrieved
 266  */
 267 static UINT ICO_ExtractIconExW(
 268         LPCWSTR lpszExeFileName,
 269         HICON * RetPtr,
 270         INT nIconIndex,
 271         UINT nIcons,
 272         UINT cxDesired,
 273         UINT cyDesired,
 274         UINT *pIconId,
 275         UINT flags)
 276 {
 277         UINT            ret = 0;
 278         UINT            cx1, cx2, cy1, cy2;
 279         LPBYTE          pData;
 280         DWORD           sig;
 281         HANDLE          hFile;
 282         UINT16          iconDirCount = 0,iconCount = 0;
 283         LPBYTE          peimage;
 284         HANDLE          fmapping;
 285         DWORD           fsizeh,fsizel;
 286         WCHAR           szExePath[MAX_PATH];
 287         DWORD           dwSearchReturn;
 288
 289         TRACE("%s, %d, %d %p 0x%08x\n", debugstr_w(lpszExeFileName), nIconIndex, nIcons, pIconId, flags);
 290
 291         dwSearchReturn = SearchPathW(NULL, lpszExeFileName, NULL, sizeof(szExePath) / sizeof(szExePath[0]), szExePath, NULL);
 292         if ((dwSearchReturn == 0) || (dwSearchReturn > sizeof(szExePath) / sizeof(szExePath[0])))
 293         {
 294             WARN("File %s not found or path too long\n", debugstr_w(lpszExeFileName));
 295             return -1;
 296         }
 297
 298         hFile = CreateFileW(szExePath, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, 0);
 299         if (hFile == INVALID_HANDLE_VALUE) return ret;
 300         fsizel = GetFileSize(hFile,&fsizeh);
 301
 302         /* Map the file */
 303         fmapping = CreateFileMappingW(hFile, NULL, PAGE_READONLY | SEC_COMMIT, 0, 0, NULL);
 304         CloseHandle(hFile);
 305         if (!fmapping)
 306         {
 307           WARN("CreateFileMapping error %d\n", GetLastError() );
 308           return 0xFFFFFFFF;
 309         }
 310
 311         if (!(peimage = MapViewOfFile(fmapping, FILE_MAP_READ, 0, 0, 0)))
 312         {
 313           WARN("MapViewOfFile error %d\n", GetLastError() );
 314           CloseHandle(fmapping);
 315           return 0xFFFFFFFF;
 316         }
 317         CloseHandle(fmapping);
 318
 319         cx1 = LOWORD(cxDesired);
 320         cx2 = HIWORD(cxDesired);
 321         cy1 = LOWORD(cyDesired);
 322         cy2 = HIWORD(cyDesired);
 323
 324         if (pIconId) /* Invalidate first icon identifier */
 325                 *pIconId = 0xFFFFFFFF;
 326
 327         if (!pIconId) /* if no icon identifier array present use the icon handle array as intermediate storage */
 328           pIconId = (UINT*)RetPtr;
 329
 330         sig = USER32_GetResourceTable(peimage, fsizel, &pData);
 331
 332 /* ico file or NE exe/dll*/
 333         if (sig==IMAGE_OS2_SIGNATURE || sig==1) /* .ICO file */
 334         {
 335           BYTE          *pCIDir = 0;
 336           NE_TYPEINFO   *pTInfo = (NE_TYPEINFO*)(pData + 2);
 337           NE_NAMEINFO   *pIconStorage = NULL;
 338           NE_NAMEINFO   *pIconDir = NULL;
 339           LPicoICONDIR  lpiID = NULL;
 340           ULONG         uSize = 0;
 341
 342           TRACE("-- OS2/icon Signature (0x%08x)\n", sig);
 343
 344           if (pData == (BYTE*)-1)
 345           {
 346             pCIDir = ICO_GetIconDirectory(peimage, &lpiID, &uSize);     /* check for .ICO file */
 347             if (pCIDir)
 348             {
 349               iconDirCount = 1; iconCount = lpiID->idCount;
 350               TRACE("-- icon found %p 0x%08x 0x%08x 0x%08x\n", pCIDir, uSize, iconDirCount, iconCount);
 351             }
 352           }
 353           else while (pTInfo->type_id && !(pIconStorage && pIconDir))
 354           {
 355             if (pTInfo->type_id == NE_RSCTYPE_GROUP_ICON)       /* find icon directory and icon repository */
 356             {
 357               iconDirCount = pTInfo->count;
 358               pIconDir = ((NE_NAMEINFO*)(pTInfo + 1));
 359               TRACE("\tfound directory - %i icon families\n", iconDirCount);
 360             }
 361             if (pTInfo->type_id == NE_RSCTYPE_ICON)
 362             {
 363               iconCount = pTInfo->count;
 364               pIconStorage = ((NE_NAMEINFO*)(pTInfo + 1));
 365               TRACE("\ttotal icons - %i\n", iconCount);
 366             }
 367             pTInfo = (NE_TYPEINFO *)((char*)(pTInfo+1)+pTInfo->count*sizeof(NE_NAMEINFO));
 368           }
 369
 370           if ((pIconStorage && pIconDir) || lpiID)        /* load resources and create icons */
 371           {
 372             if (nIcons == 0)
 373             {
 374               ret = iconDirCount;
 375               if (lpiID)        /* *.ico file, deallocate heap pointer*/
 376                 HeapFree(GetProcessHeap(), 0, pCIDir);
 377             }
 378             else if (nIconIndex < iconDirCount)
 379             {
 380               UINT16   i, icon;
 381               if (nIcons > iconDirCount - nIconIndex)
 382                 nIcons = iconDirCount - nIconIndex;
 383
 384               for (i = 0; i < nIcons; i++)
 385               {
 386                 /* .ICO files have only one icon directory */
 387                 if (lpiID == NULL)      /* not *.ico */
 388                   pCIDir = USER32_LoadResource(peimage, pIconDir + i + nIconIndex, *(WORD*)pData, &uSize);
 389                 pIconId[i] = LookupIconIdFromDirectoryEx(pCIDir, TRUE, cx1, cy1, flags);
 390                 if (cx2 && cy2) pIconId[++i] = LookupIconIdFromDirectoryEx(pCIDir, TRUE,  cx2, cy2, flags);
 391               }
 392               if (lpiID)        /* *.ico file, deallocate heap pointer*/
 393                 HeapFree(GetProcessHeap(), 0, pCIDir);
 394
 395               for (icon = 0; icon < nIcons; icon++)
 396               {
 397                 pCIDir = NULL;
 398                 if (lpiID)
 399                   pCIDir = ICO_LoadIcon(peimage, lpiID->idEntries + (int)pIconId[icon], &uSize);
 400                 else
 401                   for (i = 0; i < iconCount; i++)
 402                     if (pIconStorage[i].id == ((int)pIconId[icon] | 0x8000) )
 403                       pCIDir = USER32_LoadResource(peimage, pIconStorage + i, *(WORD*)pData, &uSize);
 404
 405                 if (pCIDir)
 406                 {
 407                   RetPtr[icon] = CreateIconFromResourceEx(pCIDir, uSize, TRUE, 0x00030000,
 408                                                                  cx1, cy1, flags);
 409                   if (cx2 && cy2)
 410                       RetPtr[++icon] = CreateIconFromResourceEx(pCIDir, uSize, TRUE, 0x00030000,
 411                                                                        cx2, cy2, flags);
 412                 }
 413                 else
 414                   RetPtr[icon] = 0;
 415               }
 416               ret = icon;       /* return number of retrieved icons */
 417             }
 418           }
 419         }
 420 /* end ico file */
 421
 422 /* exe/dll */
 423         else if( sig == IMAGE_NT_SIGNATURE )
 424         {
 425           LPBYTE                idata,igdata;
 426           PIMAGE_DOS_HEADER     dheader;
 427           PIMAGE_NT_HEADERS     pe_header;
 428           PIMAGE_SECTION_HEADER pe_sections;
 429           const IMAGE_RESOURCE_DIRECTORY *rootresdir,*iconresdir,*icongroupresdir;
 430           const IMAGE_RESOURCE_DATA_ENTRY *idataent,*igdataent;
 431           const IMAGE_RESOURCE_DIRECTORY_ENTRY *xresent;
 432           UINT  i, j;
 433
 434           dheader = (PIMAGE_DOS_HEADER)peimage;
 435           pe_header = (PIMAGE_NT_HEADERS)(peimage+dheader->e_lfanew);     /* it is a pe header, USER32_GetResourceTable checked that */
 436           pe_sections = (PIMAGE_SECTION_HEADER)(((char*)pe_header) + sizeof(DWORD) + sizeof(IMAGE_FILE_HEADER)
 437                                                 + pe_header->FileHeader.SizeOfOptionalHeader);
 438           rootresdir = NULL;
 439
 440           /* search for the root resource directory */
 441           for (i=0;i<pe_header->FileHeader.NumberOfSections;i++)
 442           {
 443             if (pe_sections[i].Characteristics & IMAGE_SCN_CNT_UNINITIALIZED_DATA)
 444               continue;
 445             if (fsizel < pe_sections[i].PointerToRawData+pe_sections[i].SizeOfRawData) {
 446               FIXME("File %s too short (section is at %d bytes, real size is %d)\n",
 447                       debugstr_w(lpszExeFileName),
 448                       pe_sections[i].PointerToRawData+pe_sections[i].SizeOfRawData,
 449                       fsizel
 450               );
 451               goto end;
 452             }
 453             /* FIXME: doesn't work when the resources are not in a separate section */
 454             if (pe_sections[i].VirtualAddress == pe_header->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_RESOURCE].VirtualAddress)
 455             {
 456               rootresdir = (PIMAGE_RESOURCE_DIRECTORY)(peimage+pe_sections[i].PointerToRawData);
 457               break;
 458             }
 459           }
 460
 461           if (!rootresdir)
 462           {
 463             WARN("haven't found section for resource directory.\n");
 464             goto end;           /* failure */
 465           }
 466
 467           /* search for the group icon directory */
 468           if (!(icongroupresdir = find_entry_by_id(rootresdir, LOWORD(RT_GROUP_ICON), rootresdir)))
 469           {
 470             WARN("No Icongroupresourcedirectory!\n");
 471             goto end;           /* failure */
 472           }
 473           iconDirCount = icongroupresdir->NumberOfNamedEntries + icongroupresdir->NumberOfIdEntries;
 474
 475           /* only number of icons requested */
 476           if( !pIconId )
 477           {
 478             ret = iconDirCount;
 479             goto end;           /* success */
 480           }
 481
 482           if( nIconIndex < 0 )
 483           {
 484             /* search resource id */
 485             int n = 0;
 486             int iId = abs(nIconIndex);
 487             const IMAGE_RESOURCE_DIRECTORY_ENTRY* xprdeTmp = (const IMAGE_RESOURCE_DIRECTORY_ENTRY*)(icongroupresdir+1);
 488
 489             while(n<iconDirCount && xprdeTmp)
 490             {
 491               if(xprdeTmp->u1.s2.Id ==  iId)
 492               {
 493                   nIconIndex = n;
 494                   break;
 495               }
 496               n++;
 497               xprdeTmp++;
 498             }
 499             if (nIconIndex < 0)
 500             {
 501               WARN("resource id %d not found\n", iId);
 502               goto end;         /* failure */
 503             }
 504           }
 505           else
 506           {
 507             /* check nIconIndex to be in range */
 508             if (nIconIndex >= iconDirCount)
 509             {
 510               WARN("nIconIndex %d is larger than iconDirCount %d\n",nIconIndex,iconDirCount);
 511               goto end;         /* failure */
 512             }
 513           }
 514
 515           /* assure we don't get too much */
 516           if( nIcons > iconDirCount - nIconIndex )
 517             nIcons = iconDirCount - nIconIndex;
 518
 519           /* starting from specified index */
 520           xresent = (const IMAGE_RESOURCE_DIRECTORY_ENTRY*)(icongroupresdir+1) + nIconIndex;
 521
 522           for (i=0; i < nIcons; i++,xresent++)
 523           {
 524             const IMAGE_RESOURCE_DIRECTORY *resdir;
 525
 526             /* go down this resource entry, name */
 527             resdir = (const IMAGE_RESOURCE_DIRECTORY *)((const char *)rootresdir + xresent->u2.s3.OffsetToDirectory);
 528
 529             /* default language (0) */
 530             resdir = find_entry_default(resdir,rootresdir);
 531             igdataent = (const IMAGE_RESOURCE_DATA_ENTRY*)resdir;
 532
 533             /* lookup address in mapped image for virtual address */
 534             igdata = NULL;
 535
 536             for (j=0;j<pe_header->FileHeader.NumberOfSections;j++)
 537             {
 538               if (igdataent->OffsetToData < pe_sections[j].VirtualAddress)
 539                 continue;
 540               if (igdataent->OffsetToData+igdataent->Size > pe_sections[j].VirtualAddress+pe_sections[j].SizeOfRawData)
 541                 continue;
 542
 543               if (igdataent->OffsetToData-pe_sections[j].VirtualAddress+pe_sections[j].PointerToRawData+igdataent->Size > fsizel) {
 544                 FIXME("overflow in PE lookup (%s has len %d, have offset %d), short file?\n", debugstr_w(lpszExeFileName), fsizel,
 545                            igdataent->OffsetToData - pe_sections[j].VirtualAddress + pe_sections[j].PointerToRawData + igdataent->Size);
 546                 goto end; /* failure */
 547               }
 548               igdata = peimage+(igdataent->OffsetToData-pe_sections[j].VirtualAddress+pe_sections[j].PointerToRawData);
 549             }
 550
 551             if (!igdata)
 552             {
 553               FIXME("no matching real address for icongroup!\n");
 554               goto end; /* failure */
 555             }
 556             pIconId[i] = LookupIconIdFromDirectoryEx(igdata, TRUE, cx1, cy1, flags);
 557             if (cx2 && cy2) pIconId[++i] = LookupIconIdFromDirectoryEx(igdata, TRUE, cx2, cy2, flags);
 558           }
 559
 560           if (!(iconresdir=find_entry_by_id(rootresdir,LOWORD(RT_ICON),rootresdir)))
 561           {
 562             WARN("No Iconresourcedirectory!\n");
 563             goto end;           /* failure */
 564           }
 565
 566           for (i=0; i<nIcons; i++)
 567           {
 568             const IMAGE_RESOURCE_DIRECTORY *xresdir;
 569             xresdir = find_entry_by_id(iconresdir, LOWORD(pIconId[i]), rootresdir);
 570             if( !xresdir )
 571             {
 572               WARN("icon entry %d not found\n", LOWORD(pIconId[i]));
 573               RetPtr[i]=0;
 574               continue;
 575             }
 576             xresdir = find_entry_default(xresdir, rootresdir);
 577             idataent = (const IMAGE_RESOURCE_DATA_ENTRY*)xresdir;
 578             idata = NULL;
 579
 580             /* map virtual to address in image */
 581             for (j=0;j<pe_header->FileHeader.NumberOfSections;j++)
 582             {
 583               if (idataent->OffsetToData < pe_sections[j].VirtualAddress)
 584                 continue;
 585               if (idataent->OffsetToData+idataent->Size > pe_sections[j].VirtualAddress+pe_sections[j].SizeOfRawData)
 586                 continue;
 587               idata = peimage+(idataent->OffsetToData-pe_sections[j].VirtualAddress+pe_sections[j].PointerToRawData);
 588             }
 589             if (!idata)
 590             {
 591               WARN("no matching real address found for icondata!\n");
 592               RetPtr[i]=0;
 593               continue;
 594             }
 595             RetPtr[i] = CreateIconFromResourceEx(idata, idataent->Size, TRUE, 0x00030000, cx1, cy1, flags);
 596             if (cx2 && cy2)
 597                 RetPtr[++i] = CreateIconFromResourceEx(idata, idataent->Size, TRUE, 0x00030000, cx2, cy2, flags);
 598           }
 599           ret = i;      /* return number of retrieved icons */
 600         }                       /* if(sig == IMAGE_NT_SIGNATURE) */
 601
 602 end:
 603         UnmapViewOfFile(peimage);       /* success */
 604         return ret;
 605 }
 606
 607 /***********************************************************************
 608  *           PrivateExtractIconsW                       [USER32.@]
 609  *
 610  * NOTES
 611  *  If HIWORD(sizeX) && HIWORD(sizeY) 2 * ((nIcons + 1) MOD 2) icons are
 612  *  returned, with the LOWORD size icon first and the HIWORD size icon
 613  *  second.
 614  *  Also the Windows equivalent does extract icons in a strange way if
 615  *  nIndex is negative. Our implementation treats a negative nIndex as
 616  *  looking for that resource identifier for the first icon to retrieve.
 617  *
 618  * FIXME:
 619  *  should also support 16 bit EXE + DLLs, cursor and animated cursor as
 620  *  well as bitmap files.
 621  */
 622
 623 UINT WINAPI PrivateExtractIconsW (
 624         LPCWSTR lpwstrFile,
 625         int nIndex,
 626         int sizeX,
 627         int sizeY,
 628         HICON * phicon, /* [out] pointer to array of nIcons HICON handles */
 629         UINT* pIconId,  /* [out] pointer to array of nIcons icon identifiers or NULL */
 630         UINT nIcons,    /* [in] number of icons to retrieve */
 631         UINT flags )    /* [in] LR_* flags used by LoadImage */
 632 {
 633         TRACE("%s %d %dx%d %p %p %d 0x%08x\n",
 634               debugstr_w(lpwstrFile), nIndex, sizeX, sizeY, phicon, pIconId, nIcons, flags);
 635
 636         if ((nIcons & 1) && HIWORD(sizeX) && HIWORD(sizeY))
 637         {
 638           WARN("Uneven number %d of icons requested for small and large icons!\n", nIcons);
 639         }
 640         return ICO_ExtractIconExW(lpwstrFile, phicon, nIndex, nIcons, sizeX, sizeY, pIconId, flags);
 641 }
 642
 643 /***********************************************************************
 644  *           PrivateExtractIconsA                       [USER32.@]
 645  */
 646
 647 UINT WINAPI PrivateExtractIconsA (
 648         LPCSTR lpstrFile,
 649         int nIndex,
 650         int sizeX,
 651         int sizeY,
 652         HICON * phicon, /* [out] pointer to array of nIcons HICON handles */
 653         UINT* piconid,  /* [out] pointer to array of nIcons icon identifiers or NULL */
 654         UINT nIcons,    /* [in] number of icons to retrieve */
 655         UINT flags )    /* [in] LR_* flags used by LoadImage */
 656 {
 657     UINT ret;
 658     INT len = MultiByteToWideChar(CP_ACP, 0, lpstrFile, -1, NULL, 0);
 659     LPWSTR lpwstrFile = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR));
 660
 661     MultiByteToWideChar(CP_ACP, 0, lpstrFile, -1, lpwstrFile, len);
 662     ret = PrivateExtractIconsW(lpwstrFile, nIndex, sizeX, sizeY, phicon, piconid, nIcons, flags);
 663
 664     HeapFree(GetProcessHeap(), 0, lpwstrFile);
 665     return ret;
 666 }
 667
 668 /***********************************************************************
 669  *           PrivateExtractIconExW                      [USER32.@]
 670  * NOTES
 671  *  if nIndex == -1 it returns the number of icons in any case !!!
 672  */
 673 UINT WINAPI PrivateExtractIconExW (
 674         LPCWSTR lpwstrFile,
 675         int nIndex,
 676         HICON * phIconLarge,
 677         HICON * phIconSmall,
 678         UINT nIcons )
 679 {
 680         DWORD cyicon, cysmicon, cxicon, cxsmicon;
 681         UINT ret = 0;
 682
 683         TRACE("%s %d %p %p %d\n",
 684         debugstr_w(lpwstrFile),nIndex,phIconLarge, phIconSmall, nIcons);
 685
 686         if (nIndex == -1)
 687           /* get the number of icons */
 688           return ICO_ExtractIconExW(lpwstrFile, NULL, 0, 0, 0, 0, NULL, LR_DEFAULTCOLOR);
 689
 690         if (nIcons == 1 && phIconSmall && phIconLarge)
 691         {
 692           HICON hIcon[2];
 693           cxicon = GetSystemMetrics(SM_CXICON);
 694           cyicon = GetSystemMetrics(SM_CYICON);
 695           cxsmicon = GetSystemMetrics(SM_CXSMICON);
 696           cysmicon = GetSystemMetrics(SM_CYSMICON);
 697
 698           ret = ICO_ExtractIconExW(lpwstrFile, hIcon, nIndex, 2, cxicon | (cxsmicon<<16),
 699                                    cyicon | (cysmicon<<16), NULL, LR_DEFAULTCOLOR);
 700           *phIconLarge = hIcon[0];
 701           *phIconSmall = hIcon[1];
 702           return ret;
 703         }
 704
 705         if (phIconSmall)
 706         {
 707           /* extract n small icons */
 708           cxsmicon = GetSystemMetrics(SM_CXSMICON);
 709           cysmicon = GetSystemMetrics(SM_CYSMICON);
 710           ret = ICO_ExtractIconExW(lpwstrFile, phIconSmall, nIndex, nIcons, cxsmicon,
 711                                    cysmicon, NULL, LR_DEFAULTCOLOR);
 712         }
 713        if (phIconLarge)
 714         {
 715           /* extract n large icons */
 716           cxicon = GetSystemMetrics(SM_CXICON);
 717           cyicon = GetSystemMetrics(SM_CYICON);
 718          ret = ICO_ExtractIconExW(lpwstrFile, phIconLarge, nIndex, nIcons, cxicon,
 719                                    cyicon, NULL, LR_DEFAULTCOLOR);
 720         }
 721         return ret;
 722 }
 723
 724 /***********************************************************************
 725  *           PrivateExtractIconExA                      [USER32.@]
 726  */
 727 UINT WINAPI PrivateExtractIconExA (
 728         LPCSTR lpstrFile,
 729         int nIndex,
 730         HICON * phIconLarge,
 731         HICON * phIconSmall,
 732         UINT nIcons )
 733 {
 734         UINT ret;
 735         INT len = MultiByteToWideChar(CP_ACP, 0, lpstrFile, -1, NULL, 0);
 736         LPWSTR lpwstrFile = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR));
 737
 738         TRACE("%s %d %p %p %d\n", lpstrFile, nIndex, phIconLarge, phIconSmall, nIcons);
 739
 740         MultiByteToWideChar(CP_ACP, 0, lpstrFile, -1, lpwstrFile, len);
 741         ret = PrivateExtractIconExW(lpwstrFile, nIndex, phIconLarge, phIconSmall, nIcons);
 742         HeapFree(GetProcessHeap(), 0, lpwstrFile);
 743         return ret;
 744 }