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  *      ICO_ExtractIconExW              [internal]
 238  *
 239  * NOTES
 240  *  nIcons = 0: returns number of Icons in file
 241  *
 242  * returns
 243  *  invalid file: -1
 244  *  failure:0;
 245  *  success: number of icons in file (nIcons = 0) or nr of icons retrieved
 246  */
 247 static UINT ICO_ExtractIconExW(
 248         LPCWSTR lpszExeFileName,
 249         HICON * RetPtr,
 250         INT nIconIndex,
 251         UINT nIcons,
 252         UINT cxDesired,
 253         UINT cyDesired,
 254         UINT *pIconId,
 255         UINT flags)
 256 {
 257         UINT            ret = 0;
 258         UINT            cx1, cx2, cy1, cy2;
 259         LPBYTE          pData;
 260         DWORD           sig;
 261         HANDLE          hFile;
 262         UINT16          iconDirCount = 0,iconCount = 0;
 263         LPBYTE          peimage;
 264         HANDLE          fmapping;
 265         DWORD           fsizeh,fsizel;
 266         WCHAR           szExePath[MAX_PATH];
 267         DWORD           dwSearchReturn;
 268
 269         TRACE("%s, %d, %d %p 0x%08x\n", debugstr_w(lpszExeFileName), nIconIndex, nIcons, pIconId, flags);
 270
 271         dwSearchReturn = SearchPathW(NULL, lpszExeFileName, NULL, sizeof(szExePath) / sizeof(szExePath[0]), szExePath, NULL);
 272         if ((dwSearchReturn == 0) || (dwSearchReturn > sizeof(szExePath) / sizeof(szExePath[0])))
 273         {
 274             WARN("File %s not found or path too long\n", debugstr_w(lpszExeFileName));
 275             return -1;
 276         }
 277
 278         hFile = CreateFileW(szExePath, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, 0);
 279         if (hFile == INVALID_HANDLE_VALUE) return ret;
 280         fsizel = GetFileSize(hFile,&fsizeh);
 281
 282         /* Map the file */
 283         fmapping = CreateFileMappingW(hFile, NULL, PAGE_READONLY | SEC_COMMIT, 0, 0, NULL);
 284         CloseHandle(hFile);
 285         if (!fmapping)
 286         {
 287           WARN("CreateFileMapping error %d\n", GetLastError() );
 288           return 0xFFFFFFFF;
 289         }
 290
 291         if (!(peimage = MapViewOfFile(fmapping, FILE_MAP_READ, 0, 0, 0)))
 292         {
 293           WARN("MapViewOfFile error %d\n", GetLastError() );
 294           CloseHandle(fmapping);
 295           return 0xFFFFFFFF;
 296         }
 297         CloseHandle(fmapping);
 298
 299         cx1 = LOWORD(cxDesired);
 300         cx2 = HIWORD(cxDesired);
 301         cy1 = LOWORD(cyDesired);
 302         cy2 = HIWORD(cyDesired);
 303
 304         if (pIconId) /* Invalidate first icon identifier */
 305                 *pIconId = 0xFFFFFFFF;
 306
 307         if (!pIconId) /* if no icon identifier array present use the icon handle array as intermediate storage */
 308           pIconId = (UINT*)RetPtr;
 309
 310         sig = USER32_GetResourceTable(peimage, fsizel, &pData);
 311
 312 /* ico file or NE exe/dll*/
 313         if (sig==IMAGE_OS2_SIGNATURE || sig==1) /* .ICO file */
 314         {
 315           BYTE          *pCIDir = 0;
 316           NE_TYPEINFO   *pTInfo = (NE_TYPEINFO*)(pData + 2);
 317           NE_NAMEINFO   *pIconStorage = NULL;
 318           NE_NAMEINFO   *pIconDir = NULL;
 319           LPicoICONDIR  lpiID = NULL;
 320           ULONG         uSize = 0;
 321
 322           TRACE("-- OS2/icon Signature (0x%08x)\n", sig);
 323
 324           if (pData == (BYTE*)-1)
 325           {
 326             pCIDir = ICO_GetIconDirectory(peimage, &lpiID, &uSize);     /* check for .ICO file */
 327             if (pCIDir)
 328             {
 329               iconDirCount = 1; iconCount = lpiID->idCount;
 330               TRACE("-- icon found %p 0x%08x 0x%08x 0x%08x\n", pCIDir, uSize, iconDirCount, iconCount);
 331             }
 332           }
 333           else while (pTInfo->type_id && !(pIconStorage && pIconDir))
 334           {
 335             if (pTInfo->type_id == NE_RSCTYPE_GROUP_ICON)       /* find icon directory and icon repository */
 336             {
 337               iconDirCount = pTInfo->count;
 338               pIconDir = ((NE_NAMEINFO*)(pTInfo + 1));
 339               TRACE("\tfound directory - %i icon families\n", iconDirCount);
 340             }
 341             if (pTInfo->type_id == NE_RSCTYPE_ICON)
 342             {
 343               iconCount = pTInfo->count;
 344               pIconStorage = ((NE_NAMEINFO*)(pTInfo + 1));
 345               TRACE("\ttotal icons - %i\n", iconCount);
 346             }
 347             pTInfo = (NE_TYPEINFO *)((char*)(pTInfo+1)+pTInfo->count*sizeof(NE_NAMEINFO));
 348           }
 349
 350           if ((pIconStorage && pIconDir) || lpiID)        /* load resources and create icons */
 351           {
 352             if (nIcons == 0)
 353             {
 354               ret = iconDirCount;
 355               if (lpiID)        /* *.ico file, deallocate heap pointer*/
 356                 HeapFree(GetProcessHeap(), 0, pCIDir);
 357             }
 358             else if (nIconIndex < iconDirCount)
 359             {
 360               UINT16   i, icon;
 361               if (nIcons > iconDirCount - nIconIndex)
 362                 nIcons = iconDirCount - nIconIndex;
 363
 364               for (i = 0; i < nIcons; i++)
 365               {
 366                 /* .ICO files have only one icon directory */
 367                 if (lpiID == NULL)      /* not *.ico */
 368                   pCIDir = USER32_LoadResource(peimage, pIconDir + i + nIconIndex, *(WORD*)pData, &uSize);
 369                 pIconId[i] = LookupIconIdFromDirectoryEx(pCIDir, TRUE, cx1, cy1, flags);
 370                 if (cx2 && cy2) pIconId[++i] = LookupIconIdFromDirectoryEx(pCIDir, TRUE,  cx2, cy2, flags);
 371               }
 372               if (lpiID)        /* *.ico file, deallocate heap pointer*/
 373                 HeapFree(GetProcessHeap(), 0, pCIDir);
 374
 375               for (icon = 0; icon < nIcons; icon++)
 376               {
 377                 pCIDir = NULL;
 378                 if (lpiID)
 379                   pCIDir = ICO_LoadIcon(peimage, lpiID->idEntries + (int)pIconId[icon], &uSize);
 380                 else
 381                   for (i = 0; i < iconCount; i++)
 382                     if (pIconStorage[i].id == ((int)pIconId[icon] | 0x8000) )
 383                       pCIDir = USER32_LoadResource(peimage, pIconStorage + i, *(WORD*)pData, &uSize);
 384
 385                 if (pCIDir)
 386                 {
 387                   RetPtr[icon] = CreateIconFromResourceEx(pCIDir, uSize, TRUE, 0x00030000,
 388                                                                  cx1, cy1, flags);
 389                   if (cx2 && cy2)
 390                       RetPtr[++icon] = CreateIconFromResourceEx(pCIDir, uSize, TRUE, 0x00030000,
 391                                                                        cx2, cy2, flags);
 392                 }
 393                 else
 394                   RetPtr[icon] = 0;
 395               }
 396               ret = icon;       /* return number of retrieved icons */
 397             }
 398           }
 399         }
 400 /* end ico file */
 401
 402 /* exe/dll */
 403         else if( sig == IMAGE_NT_SIGNATURE )
 404         {
 405           LPBYTE                idata,igdata;
 406           PIMAGE_DOS_HEADER     dheader;
 407           PIMAGE_NT_HEADERS     pe_header;
 408           PIMAGE_SECTION_HEADER pe_sections;
 409           const IMAGE_RESOURCE_DIRECTORY *rootresdir,*iconresdir,*icongroupresdir;
 410           const IMAGE_RESOURCE_DATA_ENTRY *idataent,*igdataent;
 411           const IMAGE_RESOURCE_DIRECTORY_ENTRY *xresent;
 412           UINT  i, j;
 413
 414           dheader = (PIMAGE_DOS_HEADER)peimage;
 415           pe_header = (PIMAGE_NT_HEADERS)(peimage+dheader->e_lfanew);     /* it is a pe header, USER32_GetResourceTable checked that */
 416           pe_sections = (PIMAGE_SECTION_HEADER)(((char*)pe_header) + sizeof(DWORD) + sizeof(IMAGE_FILE_HEADER)
 417                                                 + pe_header->FileHeader.SizeOfOptionalHeader);
 418           rootresdir = NULL;
 419
 420           /* search for the root resource directory */
 421           for (i=0;i<pe_header->FileHeader.NumberOfSections;i++)
 422           {
 423             if (pe_sections[i].Characteristics & IMAGE_SCN_CNT_UNINITIALIZED_DATA)
 424               continue;
 425             if (fsizel < pe_sections[i].PointerToRawData+pe_sections[i].SizeOfRawData) {
 426               FIXME("File %s too short (section is at %d bytes, real size is %d)\n",
 427                       debugstr_w(lpszExeFileName),
 428                       pe_sections[i].PointerToRawData+pe_sections[i].SizeOfRawData,
 429                       fsizel
 430               );
 431               goto end;
 432             }
 433             /* FIXME: doesn't work when the resources are not in a separate section */
 434             if (pe_sections[i].VirtualAddress == pe_header->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_RESOURCE].VirtualAddress)
 435             {
 436               rootresdir = (PIMAGE_RESOURCE_DIRECTORY)(peimage+pe_sections[i].PointerToRawData);
 437               break;
 438             }
 439           }
 440
 441           if (!rootresdir)
 442           {
 443             WARN("haven't found section for resource directory.\n");
 444             goto end;           /* failure */
 445           }
 446
 447           /* search for the group icon directory */
 448           if (!(icongroupresdir = find_entry_by_id(rootresdir, LOWORD(RT_GROUP_ICON), rootresdir)))
 449           {
 450             WARN("No Icongroupresourcedirectory!\n");
 451             goto end;           /* failure */
 452           }
 453           iconDirCount = icongroupresdir->NumberOfNamedEntries + icongroupresdir->NumberOfIdEntries;
 454
 455           /* only number of icons requested */
 456           if( !pIconId )
 457           {
 458             ret = iconDirCount;
 459             goto end;           /* success */
 460           }
 461
 462           if( nIconIndex < 0 )
 463           {
 464             /* search resource id */
 465             int n = 0;
 466             int iId = abs(nIconIndex);
 467             const IMAGE_RESOURCE_DIRECTORY_ENTRY* xprdeTmp = (const IMAGE_RESOURCE_DIRECTORY_ENTRY*)(icongroupresdir+1);
 468
 469             while(n<iconDirCount && xprdeTmp)
 470             {
 471               if(xprdeTmp->u1.s2.Id ==  iId)
 472               {
 473                   nIconIndex = n;
 474                   break;
 475               }
 476               n++;
 477               xprdeTmp++;
 478             }
 479             if (nIconIndex < 0)
 480             {
 481               WARN("resource id %d not found\n", iId);
 482               goto end;         /* failure */
 483             }
 484           }
 485           else
 486           {
 487             /* check nIconIndex to be in range */
 488             if (nIconIndex >= iconDirCount)
 489             {
 490               WARN("nIconIndex %d is larger than iconDirCount %d\n",nIconIndex,iconDirCount);
 491               goto end;         /* failure */
 492             }
 493           }
 494
 495           /* assure we don't get too much */
 496           if( nIcons > iconDirCount - nIconIndex )
 497             nIcons = iconDirCount - nIconIndex;
 498
 499           /* starting from specified index */
 500           xresent = (const IMAGE_RESOURCE_DIRECTORY_ENTRY*)(icongroupresdir+1) + nIconIndex;
 501
 502           for (i=0; i < nIcons; i++,xresent++)
 503           {
 504             const IMAGE_RESOURCE_DIRECTORY *resdir;
 505
 506             /* go down this resource entry, name */
 507             resdir = (const IMAGE_RESOURCE_DIRECTORY *)((const char *)rootresdir + xresent->u2.s3.OffsetToDirectory);
 508
 509             /* default language (0) */
 510             resdir = find_entry_default(resdir,rootresdir);
 511             igdataent = (const IMAGE_RESOURCE_DATA_ENTRY*)resdir;
 512
 513             /* lookup address in mapped image for virtual address */
 514             igdata = NULL;
 515
 516             for (j=0;j<pe_header->FileHeader.NumberOfSections;j++)
 517             {
 518               if (igdataent->OffsetToData < pe_sections[j].VirtualAddress)
 519                 continue;
 520               if (igdataent->OffsetToData+igdataent->Size > pe_sections[j].VirtualAddress+pe_sections[j].SizeOfRawData)
 521                 continue;
 522
 523               if (igdataent->OffsetToData-pe_sections[j].VirtualAddress+pe_sections[j].PointerToRawData+igdataent->Size > fsizel) {
 524                 FIXME("overflow in PE lookup (%s has len %d, have offset %d), short file?\n", debugstr_w(lpszExeFileName), fsizel,
 525                            igdataent->OffsetToData - pe_sections[j].VirtualAddress + pe_sections[j].PointerToRawData + igdataent->Size);
 526                 goto end; /* failure */
 527               }
 528               igdata = peimage+(igdataent->OffsetToData-pe_sections[j].VirtualAddress+pe_sections[j].PointerToRawData);
 529             }
 530
 531             if (!igdata)
 532             {
 533               FIXME("no matching real address for icongroup!\n");
 534               goto end; /* failure */
 535             }
 536             pIconId[i] = LookupIconIdFromDirectoryEx(igdata, TRUE, cx1, cy1, flags);
 537             if (cx2 && cy2) pIconId[++i] = LookupIconIdFromDirectoryEx(igdata, TRUE, cx2, cy2, flags);
 538           }
 539
 540           if (!(iconresdir=find_entry_by_id(rootresdir,LOWORD(RT_ICON),rootresdir)))
 541           {
 542             WARN("No Iconresourcedirectory!\n");
 543             goto end;           /* failure */
 544           }
 545
 546           for (i=0; i<nIcons; i++)
 547           {
 548             const IMAGE_RESOURCE_DIRECTORY *xresdir;
 549             xresdir = find_entry_by_id(iconresdir, LOWORD(pIconId[i]), rootresdir);
 550             if( !xresdir )
 551             {
 552               WARN("icon entry %d not found\n", LOWORD(pIconId[i]));
 553               RetPtr[i]=0;
 554               continue;
 555             }
 556             xresdir = find_entry_default(xresdir, rootresdir);
 557             idataent = (const IMAGE_RESOURCE_DATA_ENTRY*)xresdir;
 558             idata = NULL;
 559
 560             /* map virtual to address in image */
 561             for (j=0;j<pe_header->FileHeader.NumberOfSections;j++)
 562             {
 563               if (idataent->OffsetToData < pe_sections[j].VirtualAddress)
 564                 continue;
 565               if (idataent->OffsetToData+idataent->Size > pe_sections[j].VirtualAddress+pe_sections[j].SizeOfRawData)
 566                 continue;
 567               idata = peimage+(idataent->OffsetToData-pe_sections[j].VirtualAddress+pe_sections[j].PointerToRawData);
 568             }
 569             if (!idata)
 570             {
 571               WARN("no matching real address found for icondata!\n");
 572               RetPtr[i]=0;
 573               continue;
 574             }
 575             RetPtr[i] = CreateIconFromResourceEx(idata, idataent->Size, TRUE, 0x00030000, cx1, cy1, flags);
 576             if (cx2 && cy2)
 577                 RetPtr[++i] = CreateIconFromResourceEx(idata, idataent->Size, TRUE, 0x00030000, cx2, cy2, flags);
 578           }
 579           ret = i;      /* return number of retrieved icons */
 580         }                       /* if(sig == IMAGE_NT_SIGNATURE) */
 581
 582 end:
 583         UnmapViewOfFile(peimage);       /* success */
 584         return ret;
 585 }
 586
 587 /***********************************************************************
 588  *           PrivateExtractIconsW                       [USER32.@]
 589  *
 590  * NOTES
 591  *  If HIWORD(sizeX) && HIWORD(sizeY) 2 * ((nIcons + 1) MOD 2) icons are
 592  *  returned, with the LOWORD size icon first and the HIWORD size icon
 593  *  second.
 594  *  Also the Windows equivalent does extract icons in a strange way if
 595  *  nIndex is negative. Our implementation treats a negative nIndex as
 596  *  looking for that resource identifier for the first icon to retrieve.
 597  *
 598  * FIXME:
 599  *  should also support 16 bit EXE + DLLs, cursor and animated cursor as
 600  *  well as bitmap files.
 601  */
 602
 603 UINT WINAPI PrivateExtractIconsW (
 604         LPCWSTR lpwstrFile,
 605         int nIndex,
 606         int sizeX,
 607         int sizeY,
 608         HICON * phicon, /* [out] pointer to array of nIcons HICON handles */
 609         UINT* pIconId,  /* [out] pointer to array of nIcons icon identifiers or NULL */
 610         UINT nIcons,    /* [in] number of icons to retrieve */
 611         UINT flags )    /* [in] LR_* flags used by LoadImage */
 612 {
 613         TRACE("%s %d %dx%d %p %p %d 0x%08x\n",
 614               debugstr_w(lpwstrFile), nIndex, sizeX, sizeY, phicon, pIconId, nIcons, flags);
 615
 616         if ((nIcons & 1) && HIWORD(sizeX) && HIWORD(sizeY))
 617         {
 618           WARN("Uneven number %d of icons requested for small and large icons!\n", nIcons);
 619         }
 620         return ICO_ExtractIconExW(lpwstrFile, phicon, nIndex, nIcons, sizeX, sizeY, pIconId, flags);
 621 }
 622
 623 /***********************************************************************
 624  *           PrivateExtractIconsA                       [USER32.@]
 625  */
 626
 627 UINT WINAPI PrivateExtractIconsA (
 628         LPCSTR lpstrFile,
 629         int nIndex,
 630         int sizeX,
 631         int sizeY,
 632         HICON * phicon, /* [out] pointer to array of nIcons HICON handles */
 633         UINT* piconid,  /* [out] pointer to array of nIcons icon identifiers or NULL */
 634         UINT nIcons,    /* [in] number of icons to retrieve */
 635         UINT flags )    /* [in] LR_* flags used by LoadImage */
 636 {
 637     UINT ret;
 638     INT len = MultiByteToWideChar(CP_ACP, 0, lpstrFile, -1, NULL, 0);
 639     LPWSTR lpwstrFile = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR));
 640
 641     MultiByteToWideChar(CP_ACP, 0, lpstrFile, -1, lpwstrFile, len);
 642     ret = PrivateExtractIconsW(lpwstrFile, nIndex, sizeX, sizeY, phicon, piconid, nIcons, flags);
 643
 644     HeapFree(GetProcessHeap(), 0, lpwstrFile);
 645     return ret;
 646 }
 647
 648 /***********************************************************************
 649  *           PrivateExtractIconExW                      [USER32.@]
 650  * NOTES
 651  *  if nIndex == -1 it returns the number of icons in any case !!!
 652  */
 653 UINT WINAPI PrivateExtractIconExW (
 654         LPCWSTR lpwstrFile,
 655         int nIndex,
 656         HICON * phIconLarge,
 657         HICON * phIconSmall,
 658         UINT nIcons )
 659 {
 660         DWORD cyicon, cysmicon, cxicon, cxsmicon;
 661         UINT ret = 0;
 662
 663         TRACE("%s %d %p %p %d\n",
 664         debugstr_w(lpwstrFile),nIndex,phIconLarge, phIconSmall, nIcons);
 665
 666         if (nIndex == -1)
 667           /* get the number of icons */
 668           return ICO_ExtractIconExW(lpwstrFile, NULL, 0, 0, 0, 0, NULL, LR_DEFAULTCOLOR);
 669
 670         if (nIcons == 1 && phIconSmall && phIconLarge)
 671         {
 672           HICON hIcon[2];
 673           cxicon = GetSystemMetrics(SM_CXICON);
 674           cyicon = GetSystemMetrics(SM_CYICON);
 675           cxsmicon = GetSystemMetrics(SM_CXSMICON);
 676           cysmicon = GetSystemMetrics(SM_CYSMICON);
 677
 678           ret = ICO_ExtractIconExW(lpwstrFile, hIcon, nIndex, 2, cxicon | (cxsmicon<<16),
 679                                    cyicon | (cysmicon<<16), NULL, LR_DEFAULTCOLOR);
 680           *phIconLarge = hIcon[0];
 681           *phIconSmall = hIcon[1];
 682           return ret;
 683         }
 684
 685         if (phIconSmall)
 686         {
 687           /* extract n small icons */
 688           cxsmicon = GetSystemMetrics(SM_CXSMICON);
 689           cysmicon = GetSystemMetrics(SM_CYSMICON);
 690           ret = ICO_ExtractIconExW(lpwstrFile, phIconSmall, nIndex, nIcons, cxsmicon,
 691                                    cysmicon, NULL, LR_DEFAULTCOLOR);
 692         }
 693        if (phIconLarge)
 694         {
 695           /* extract n large icons */
 696           cxicon = GetSystemMetrics(SM_CXICON);
 697           cyicon = GetSystemMetrics(SM_CYICON);
 698          ret = ICO_ExtractIconExW(lpwstrFile, phIconLarge, nIndex, nIcons, cxicon,
 699                                    cyicon, NULL, LR_DEFAULTCOLOR);
 700         }
 701         return ret;
 702 }
 703
 704 /***********************************************************************
 705  *           PrivateExtractIconExA                      [USER32.@]
 706  */
 707 UINT WINAPI PrivateExtractIconExA (
 708         LPCSTR lpstrFile,
 709         int nIndex,
 710         HICON * phIconLarge,
 711         HICON * phIconSmall,
 712         UINT nIcons )
 713 {
 714         UINT ret;
 715         INT len = MultiByteToWideChar(CP_ACP, 0, lpstrFile, -1, NULL, 0);
 716         LPWSTR lpwstrFile = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR));
 717
 718         TRACE("%s %d %p %p %d\n", lpstrFile, nIndex, phIconLarge, phIconSmall, nIcons);
 719
 720         MultiByteToWideChar(CP_ACP, 0, lpstrFile, -1, lpwstrFile, len);
 721         ret = PrivateExtractIconExW(lpwstrFile, nIndex, phIconLarge, phIconSmall, nIcons);
 722         HeapFree(GetProcessHeap(), 0, lpwstrFile);
 723         return ret;
 724 }