dlls/shell32/pidl.c

   1 /*
   2  *    pidl Handling
   3  *
   4  *    Copyright 1998    Juergen Schmied
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  *
  20  * NOTES
  21  *  a pidl == NULL means desktop and is legal
  22  *
  23  */
  24
  25 #include "config.h"
  26 #include "wine/port.h"
  27
  28 #include <ctype.h>
  29 #include <stdarg.h>
  30 #include <stdlib.h>
  31 #include <string.h>
  32
  33 #define COBJMACROS
  34 #define NONAMELESSUNION
  35 #define NONAMELESSSTRUCT
  36
  37 #include "windef.h"
  38 #include "winbase.h"
  39 #include "winreg.h"
  40 #include "objbase.h"
  41 #include "shlguid.h"
  42 #include "winerror.h"
  43 #include "winnls.h"
  44 #include "undocshell.h"
  45 #include "shell32_main.h"
  46 #include "shlwapi.h"
  47
  48 #include "pidl.h"
  49 #include "wine/debug.h"
  50
  51 WINE_DEFAULT_DEBUG_CHANNEL(pidl);
  52 WINE_DECLARE_DEBUG_CHANNEL(shell);
  53
  54 /* from comctl32.dll */
  55 extern LPVOID WINAPI Alloc(INT);
  56 extern BOOL WINAPI Free(LPVOID);
  57
  58 static LPSTR _ILGetSTextPointer(LPCITEMIDLIST pidl);
  59 static LPWSTR _ILGetTextPointerW(LPCITEMIDLIST pidl);
  60
  61 /*************************************************************************
  62  * ILGetDisplayNameEx        [SHELL32.186]
  63  *
  64  * Retrieves the display name of an ItemIDList
  65  *
  66  * PARAMS
  67  *  psf        [I]   Shell Folder to start with, if NULL the desktop is used
  68  *  pidl       [I]   ItemIDList relative to the psf to get the display name for
  69  *  path       [O]   Filled in with the display name, assumed to be at least MAX_PATH long
  70  *  type       [I]   Type of display name to retrieve
  71  *                    0 = SHGDN_FORPARSING | SHGDN_FORADDRESSBAR uses always the desktop as root
  72  *                    1 = SHGDN_NORMAL relative to the root folder
  73  *                    2 = SHGDN_INFOLDER relative to the root folder, only the last name
  74  *
  75  * RETURNS
  76  *  True if the display name could be retrieved successfully, False otherwise
  77  */
  78 BOOL WINAPI ILGetDisplayNameExA(LPSHELLFOLDER psf, LPCITEMIDLIST pidl, LPSTR path, DWORD type)
  79 {
  80     BOOL ret = FALSE;
  81     WCHAR wPath[MAX_PATH];
  82
  83     TRACE("%p %p %p %d\n", psf, pidl, path, type);
  84
  85     if (!pidl || !path)
  86         return FALSE;
  87
  88     ret = ILGetDisplayNameExW(psf, pidl, wPath, type);
  89     WideCharToMultiByte(CP_ACP, 0, wPath, -1, path, MAX_PATH, NULL, NULL);
  90     TRACE("%p %p %s\n", psf, pidl, debugstr_a(path));
  91
  92     return ret;
  93 }
  94
  95 BOOL WINAPI ILGetDisplayNameExW(LPSHELLFOLDER psf, LPCITEMIDLIST pidl, LPWSTR path, DWORD type)
  96 {
  97     LPSHELLFOLDER psfParent, lsf = psf;
  98     HRESULT ret = NO_ERROR;
  99     LPCITEMIDLIST pidllast;
 100     STRRET strret;
 101     DWORD flag;
 102
 103     TRACE("%p %p %p %x\n", psf, pidl, path, type);
 104
 105     if (!pidl || !path)
 106         return FALSE;
 107
 108     if (!lsf)
 109     {
 110         ret = SHGetDesktopFolder(&lsf);
 111         if (FAILED(ret))
 112             return FALSE;
 113     }
 114
 115     switch (type)
 116     {
 117     case ILGDN_FORPARSING:
 118         flag = SHGDN_FORPARSING | SHGDN_FORADDRESSBAR;
 119         break;
 120     case ILGDN_NORMAL:
 121         flag = SHGDN_NORMAL;
 122         break;
 123     case ILGDN_INFOLDER:
 124         flag = SHGDN_INFOLDER;
 125         break;
 126     default:
 127         FIXME("Unknown type parameter = %x\n", type);
 128         flag = SHGDN_FORPARSING | SHGDN_FORADDRESSBAR;
 129         break;
 130     }
 131
 132     if (!*(const WORD*)pidl || type == ILGDN_FORPARSING)
 133     {
 134         ret = IShellFolder_GetDisplayNameOf(lsf, pidl, flag, &strret);
 135         if (SUCCEEDED(ret))
 136         {
 137             if(!StrRetToStrNW(path, MAX_PATH, &strret, pidl))
 138                 ret = E_FAIL;
 139         }
 140     }
 141     else
 142     {
 143         ret = SHBindToParent(pidl, &IID_IShellFolder, (LPVOID*)&psfParent, &pidllast);
 144         if (SUCCEEDED(ret))
 145         {
 146             ret = IShellFolder_GetDisplayNameOf(psfParent, pidllast, flag, &strret);
 147             if (SUCCEEDED(ret))
 148             {
 149                 if(!StrRetToStrNW(path, MAX_PATH, &strret, pidllast))
 150                     ret = E_FAIL;
 151             }
 152             IShellFolder_Release(psfParent);
 153         }
 154     }
 155
 156     TRACE("%p %p %s\n", psf, pidl, debugstr_w(path));
 157
 158     if (!psf)
 159         IShellFolder_Release(lsf);
 160     return SUCCEEDED(ret);
 161 }
 162
 163 BOOL WINAPI ILGetDisplayNameEx(LPSHELLFOLDER psf, LPCITEMIDLIST pidl, LPVOID path, DWORD type)
 164 {
 165     TRACE_(shell)("%p %p %p %d\n", psf, pidl, path, type);
 166
 167     if (SHELL_OsIsUnicode())
 168         return ILGetDisplayNameExW(psf, pidl, path, type);
 169     return ILGetDisplayNameExA(psf, pidl, path, type);
 170 }
 171
 172 /*************************************************************************
 173  * ILGetDisplayName            [SHELL32.15]
 174  */
 175 BOOL WINAPI ILGetDisplayName(LPCITEMIDLIST pidl, LPVOID path)
 176 {
 177     TRACE_(shell)("%p %p\n", pidl, path);
 178
 179     if (SHELL_OsIsUnicode())
 180         return ILGetDisplayNameExW(NULL, pidl, path, ILGDN_FORPARSING);
 181     return ILGetDisplayNameExA(NULL, pidl, path, ILGDN_FORPARSING);
 182 }
 183
 184 /*************************************************************************
 185  * ILFindLastID [SHELL32.16]
 186  *
 187  * NOTES
 188  *   observed: pidl=Desktop return=pidl
 189  */
 190 LPITEMIDLIST WINAPI ILFindLastID(LPCITEMIDLIST pidl)
 191 {
 192     LPCITEMIDLIST   pidlLast = pidl;
 193
 194     TRACE("(pidl=%p)\n",pidl);
 195
 196     if (!pidl)
 197         return NULL;
 198
 199     while (pidl->mkid.cb)
 200     {
 201         pidlLast = pidl;
 202         pidl = ILGetNext(pidl);
 203     }
 204     return (LPITEMIDLIST)pidlLast;
 205 }
 206
 207 /*************************************************************************
 208  * ILRemoveLastID [SHELL32.17]
 209  *
 210  * NOTES
 211  *   when pidl=Desktop return=FALSE
 212  */
 213 BOOL WINAPI ILRemoveLastID(LPITEMIDLIST pidl)
 214 {
 215     TRACE_(shell)("pidl=%p\n",pidl);
 216
 217     if (!pidl || !pidl->mkid.cb)
 218         return 0;
 219     ILFindLastID(pidl)->mkid.cb = 0;
 220     return 1;
 221 }
 222
 223 /*************************************************************************
 224  * ILClone [SHELL32.18]
 225  *
 226  * NOTES
 227  *    duplicate an idlist
 228  */
 229 LPITEMIDLIST WINAPI ILClone (LPCITEMIDLIST pidl)
 230 {
 231     DWORD    len;
 232     LPITEMIDLIST  newpidl;
 233
 234     if (!pidl)
 235         return NULL;
 236
 237     len = ILGetSize(pidl);
 238     newpidl = SHAlloc(len);
 239     if (newpidl)
 240         memcpy(newpidl,pidl,len);
 241
 242     TRACE("pidl=%p newpidl=%p\n",pidl, newpidl);
 243     pdump(pidl);
 244
 245     return newpidl;
 246 }
 247
 248 /*************************************************************************
 249  * ILCloneFirst [SHELL32.19]
 250  *
 251  * NOTES
 252  *  duplicates the first idlist of a complex pidl
 253  */
 254 LPITEMIDLIST WINAPI ILCloneFirst(LPCITEMIDLIST pidl)
 255 {
 256     DWORD len;
 257     LPITEMIDLIST pidlNew = NULL;
 258
 259     TRACE("pidl=%p\n", pidl);
 260     pdump(pidl);
 261
 262     if (pidl)
 263     {
 264         len = pidl->mkid.cb;
 265         pidlNew = SHAlloc(len+2);
 266         if (pidlNew)
 267         {
 268             memcpy(pidlNew,pidl,len+2);        /* 2 -> mind a desktop pidl */
 269
 270             if (len)
 271                 ILGetNext(pidlNew)->mkid.cb = 0x00;
 272         }
 273     }
 274     TRACE("-- newpidl=%p\n",pidlNew);
 275
 276     return pidlNew;
 277 }
 278
 279 /*************************************************************************
 280  * ILLoadFromStream (SHELL32.26)
 281  *
 282  * NOTES
 283  *   the first two bytes are the len, the pidl is following then
 284  */
 285 HRESULT WINAPI ILLoadFromStream (IStream * pStream, LPITEMIDLIST * ppPidl)
 286 {
 287     WORD        wLen = 0;
 288     DWORD       dwBytesRead;
 289     HRESULT     ret = E_FAIL;
 290
 291
 292     TRACE_(shell)("%p %p\n", pStream ,  ppPidl);
 293
 294     SHFree(*ppPidl);
 295     *ppPidl = NULL;
 296
 297     IStream_AddRef (pStream);
 298
 299     if (SUCCEEDED(IStream_Read(pStream, (LPVOID)&wLen, 2, &dwBytesRead)))
 300     {
 301         TRACE("PIDL length is %d\n", wLen);
 302         if (wLen != 0)
 303         {
 304             *ppPidl = SHAlloc (wLen);
 305             if (SUCCEEDED(IStream_Read(pStream, *ppPidl , wLen, &dwBytesRead)))
 306             {
 307                 TRACE("Stream read OK\n");
 308                 ret = S_OK;
 309             }
 310             else
 311             {
 312                 WARN("reading pidl failed\n");
 313                 SHFree(*ppPidl);
 314                 *ppPidl = NULL;
 315             }
 316         }
 317         else
 318         {
 319             *ppPidl = NULL;
 320             ret = S_OK;
 321         }
 322     }
 323
 324     /* we are not yet fully compatible */
 325     if (*ppPidl && !pcheck(*ppPidl))
 326     {
 327         WARN("Check failed\n");
 328         SHFree(*ppPidl);
 329         *ppPidl = NULL;
 330     }
 331
 332     IStream_Release (pStream);
 333     TRACE("done\n");
 334     return ret;
 335 }
 336
 337 /*************************************************************************
 338  * ILSaveToStream (SHELL32.27)
 339  *
 340  * NOTES
 341  *   the first two bytes are the len, the pidl is following then
 342  */
 343 HRESULT WINAPI ILSaveToStream (IStream * pStream, LPCITEMIDLIST pPidl)
 344 {
 345     WORD        wLen = 0;
 346     HRESULT        ret = E_FAIL;
 347
 348     TRACE_(shell)("%p %p\n", pStream, pPidl);
 349
 350     IStream_AddRef (pStream);
 351
 352     wLen = ILGetSize(pPidl);
 353
 354     if (SUCCEEDED(IStream_Write(pStream, (LPVOID)&wLen, 2, NULL)))
 355     {
 356         if (SUCCEEDED(IStream_Write(pStream, pPidl, wLen, NULL)))
 357             ret = S_OK;
 358     }
 359     IStream_Release (pStream);
 360
 361     return ret;
 362 }
 363
 364 /*************************************************************************
 365  * SHILCreateFromPath        [SHELL32.28]
 366  *
 367  * Create an ItemIDList from a path
 368  *
 369  * PARAMS
 370  *  path       [I]
 371  *  ppidl      [O]
 372  *  attributes [I/O] requested attributes on call and actual attributes when
 373  *                   the function returns
 374  *
 375  * RETURNS
 376  *  NO_ERROR if successful, or an OLE errer code otherwise
 377  *
 378  * NOTES
 379  *  Wrapper for IShellFolder_ParseDisplayName().
 380  */
 381 HRESULT WINAPI SHILCreateFromPathA(LPCSTR path, LPITEMIDLIST * ppidl, DWORD * attributes)
 382 {
 383     WCHAR lpszDisplayName[MAX_PATH];
 384
 385     TRACE_(shell)("%s %p 0x%08x\n", path, ppidl, attributes ? *attributes : 0);
 386
 387     if (!MultiByteToWideChar(CP_ACP, 0, path, -1, lpszDisplayName, MAX_PATH))
 388         lpszDisplayName[MAX_PATH-1] = 0;
 389
 390     return SHILCreateFromPathW(lpszDisplayName, ppidl, attributes);
 391 }
 392
 393 HRESULT WINAPI SHILCreateFromPathW(LPCWSTR path, LPITEMIDLIST * ppidl, DWORD * attributes)
 394 {
 395     LPSHELLFOLDER sf;
 396     DWORD pchEaten;
 397     HRESULT ret = E_FAIL;
 398
 399     TRACE_(shell)("%s %p 0x%08x\n", debugstr_w(path), ppidl, attributes ? *attributes : 0);
 400
 401     if (SUCCEEDED (SHGetDesktopFolder(&sf)))
 402     {
 403         ret = IShellFolder_ParseDisplayName(sf, 0, NULL, (LPWSTR)path, &pchEaten, ppidl, attributes);
 404         IShellFolder_Release(sf);
 405     }
 406     return ret;
 407 }
 408
 409 HRESULT WINAPI SHILCreateFromPathAW (LPCVOID path, LPITEMIDLIST * ppidl, DWORD * attributes)
 410 {
 411     if ( SHELL_OsIsUnicode())
 412         return SHILCreateFromPathW (path, ppidl, attributes);
 413     return SHILCreateFromPathA (path, ppidl, attributes);
 414 }
 415
 416 /*************************************************************************
 417  * SHCloneSpecialIDList      [SHELL32.89]
 418  *
 419  * Create an ItemIDList to one of the special folders.
 420
 421  * PARAMS
 422  *  hwndOwner    [in]
 423  *  nFolder      [in]    CSIDL_xxxxx
 424  *  fCreate      [in]    Create folder if it does not exist
 425  *
 426  * RETURNS
 427  *  Success: The newly created pidl
 428  *  Failure: NULL, if inputs are invalid.
 429  *
 430  * NOTES
 431  *  exported by ordinal.
 432  *  Caller is responsible for deallocating the returned ItemIDList with the
 433  *  shells IMalloc interface, aka ILFree.
 434  */
 435 LPITEMIDLIST WINAPI SHCloneSpecialIDList(HWND hwndOwner, DWORD nFolder, BOOL fCreate)
 436 {
 437     LPITEMIDLIST ppidl;
 438     TRACE_(shell)("(hwnd=%p,csidl=0x%x,%s).\n", hwndOwner, nFolder, fCreate ? "T" : "F");
 439
 440     if (fCreate)
 441         nFolder |= CSIDL_FLAG_CREATE;
 442
 443     SHGetSpecialFolderLocation(hwndOwner, nFolder, &ppidl);
 444     return ppidl;
 445 }
 446
 447 /*************************************************************************
 448  * ILGlobalClone             [SHELL32.20]
 449  *
 450  * Clones an ItemIDList using Alloc.
 451  *
 452  * PARAMS
 453  *  pidl       [I]   ItemIDList to clone
 454  *
 455  * RETURNS
 456  *  Newly allocated ItemIDList.
 457  *
 458  * NOTES
 459  *  exported by ordinal.
 460  */
 461 LPITEMIDLIST WINAPI ILGlobalClone(LPCITEMIDLIST pidl)
 462 {
 463     DWORD    len;
 464     LPITEMIDLIST  newpidl;
 465
 466     if (!pidl)
 467         return NULL;
 468
 469     len = ILGetSize(pidl);
 470     newpidl = Alloc(len);
 471     if (newpidl)
 472         memcpy(newpidl,pidl,len);
 473
 474     TRACE("pidl=%p newpidl=%p\n",pidl, newpidl);
 475     pdump(pidl);
 476
 477     return newpidl;
 478 }
 479
 480 /*************************************************************************
 481  * ILIsEqual [SHELL32.21]
 482  *
 483  */
 484 BOOL WINAPI ILIsEqual(LPCITEMIDLIST pidl1, LPCITEMIDLIST pidl2)
 485 {
 486     char    szData1[MAX_PATH];
 487     char    szData2[MAX_PATH];
 488
 489     LPCITEMIDLIST pidltemp1 = pidl1;
 490     LPCITEMIDLIST pidltemp2 = pidl2;
 491
 492     TRACE("pidl1=%p pidl2=%p\n",pidl1, pidl2);
 493
 494     /*
 495      * Explorer reads from registry directly (StreamMRU),
 496      * so we can only check here
 497      */
 498     if (!pcheck(pidl1) || !pcheck (pidl2))
 499         return FALSE;
 500
 501     pdump (pidl1);
 502     pdump (pidl2);
 503
 504     if (!pidl1 || !pidl2)
 505         return FALSE;
 506
 507     while (pidltemp1->mkid.cb && pidltemp2->mkid.cb)
 508     {
 509         _ILSimpleGetText(pidltemp1, szData1, MAX_PATH);
 510         _ILSimpleGetText(pidltemp2, szData2, MAX_PATH);
 511
 512         if (strcasecmp( szData1, szData2 ))
 513             return FALSE;
 514
 515         pidltemp1 = ILGetNext(pidltemp1);
 516         pidltemp2 = ILGetNext(pidltemp2);
 517     }
 518
 519     if (!pidltemp1->mkid.cb && !pidltemp2->mkid.cb)
 520         return TRUE;
 521
 522     return FALSE;
 523 }
 524
 525 /*************************************************************************
 526  * ILIsParent                [SHELL32.23]
 527  *
 528  * Verifies that pidlParent is indeed the (immediate) parent of pidlChild.
 529  *
 530  * PARAMS
 531  *  pidlParent [I]
 532  *  pidlChild  [I]
 533  *  bImmediate [I]   only return true if the parent is the direct parent
 534  *                   of the child
 535  *
 536  * RETURNS
 537  *  True if the parent ItemIDlist is a complete part of the child ItemIdList,
 538  *  False otherwise.
 539  *
 540  * NOTES
 541  *  parent = a/b, child = a/b/c -> true, c is in folder a/b
 542  *  child = a/b/c/d -> false if bImmediate is true, d is not in folder a/b
 543  *  child = a/b/c/d -> true if bImmediate is false, d is in a subfolder of a/b
 544  */
 545 BOOL WINAPI ILIsParent(LPCITEMIDLIST pidlParent, LPCITEMIDLIST pidlChild, BOOL bImmediate)
 546 {
 547     char    szData1[MAX_PATH];
 548     char    szData2[MAX_PATH];
 549     LPCITEMIDLIST pParent = pidlParent;
 550     LPCITEMIDLIST pChild = pidlChild;
 551
 552     TRACE("%p %p %x\n", pidlParent, pidlChild, bImmediate);
 553
 554     if (!pParent || !pChild)
 555         return FALSE;
 556
 557     while (pParent->mkid.cb && pChild->mkid.cb)
 558     {
 559         _ILSimpleGetText(pParent, szData1, MAX_PATH);
 560         _ILSimpleGetText(pChild, szData2, MAX_PATH);
 561
 562         if (strcasecmp( szData1, szData2 ))
 563             return FALSE;
 564
 565         pParent = ILGetNext(pParent);
 566         pChild = ILGetNext(pChild);
 567     }
 568
 569     /* child shorter or has equal length to parent */
 570     if (pParent->mkid.cb || !pChild->mkid.cb)
 571         return FALSE;
 572
 573     /* not immediate descent */
 574     if ( ILGetNext(pChild)->mkid.cb && bImmediate)
 575         return FALSE;
 576
 577     return TRUE;
 578 }
 579
 580 /*************************************************************************
 581  * ILFindChild               [SHELL32.24]
 582  *
 583  *  Compares elements from pidl1 and pidl2.
 584  *
 585  * PARAMS
 586  *  pidl1      [I]
 587  *  pidl2      [I]
 588  *
 589  * RETURNS
 590  *  pidl1 is desktop      pidl2
 591  *  pidl1 shorter pidl2   pointer to first different element of pidl2
 592  *                        if there was at least one equal element
 593  *  pidl2 shorter pidl1   0
 594  *  pidl2 equal pidl1     pointer to last 0x00-element of pidl2
 595  *
 596  * NOTES
 597  *  exported by ordinal.
 598  */
 599 LPITEMIDLIST WINAPI ILFindChild(LPCITEMIDLIST pidl1, LPCITEMIDLIST pidl2)
 600 {
 601     char    szData1[MAX_PATH];
 602     char    szData2[MAX_PATH];
 603
 604     LPCITEMIDLIST pidltemp1 = pidl1;
 605     LPCITEMIDLIST pidltemp2 = pidl2;
 606     LPCITEMIDLIST ret=NULL;
 607
 608     TRACE("pidl1=%p pidl2=%p\n",pidl1, pidl2);
 609
 610     /* explorer reads from registry directly (StreamMRU),
 611        so we can only check here */
 612     if ((!pcheck (pidl1)) || (!pcheck (pidl2)))
 613         return FALSE;
 614
 615     pdump (pidl1);
 616     pdump (pidl2);
 617
 618     if (_ILIsDesktop(pidl1))
 619     {
 620         ret = pidl2;
 621     }
 622     else
 623     {
 624         while (pidltemp1->mkid.cb && pidltemp2->mkid.cb)
 625         {
 626             _ILSimpleGetText(pidltemp1, szData1, MAX_PATH);
 627             _ILSimpleGetText(pidltemp2, szData2, MAX_PATH);
 628
 629             if (strcasecmp(szData1,szData2))
 630                 break;
 631
 632             pidltemp1 = ILGetNext(pidltemp1);
 633             pidltemp2 = ILGetNext(pidltemp2);
 634             ret = pidltemp2;
 635         }
 636
 637         if (pidltemp1->mkid.cb)
 638             ret = NULL; /* elements of pidl1 left*/
 639     }
 640     TRACE_(shell)("--- %p\n", ret);
 641     return (LPITEMIDLIST)ret; /* pidl 1 is shorter */
 642 }
 643
 644 /*************************************************************************
 645  * ILCombine                 [SHELL32.25]
 646  *
 647  * Concatenates two complex ItemIDLists.
 648  *
 649  * PARAMS
 650  *  pidl1      [I]   first complex ItemIDLists
 651  *  pidl2      [I]   complex ItemIDLists to append
 652  *
 653  * RETURNS
 654  *  if both pidl's == NULL      NULL
 655  *  if pidl1 == NULL            cloned pidl2
 656  *  if pidl2 == NULL            cloned pidl1
 657  *  otherwise new pidl with pidl2 appended to pidl1
 658  *
 659  * NOTES
 660  *  exported by ordinal.
 661  *  Does not destroy the passed in ItemIDLists!
 662  */
 663 LPITEMIDLIST WINAPI ILCombine(LPCITEMIDLIST pidl1, LPCITEMIDLIST pidl2)
 664 {
 665     DWORD    len1,len2;
 666     LPITEMIDLIST  pidlNew;
 667
 668     TRACE("pidl=%p pidl=%p\n",pidl1,pidl2);
 669
 670     if (!pidl1 && !pidl2) return NULL;
 671
 672     pdump (pidl1);
 673     pdump (pidl2);
 674
 675     if (!pidl1)
 676     {
 677         pidlNew = ILClone(pidl2);
 678         return pidlNew;
 679     }
 680
 681     if (!pidl2)
 682     {
 683         pidlNew = ILClone(pidl1);
 684         return pidlNew;
 685     }
 686
 687     len1  = ILGetSize(pidl1)-2;
 688     len2  = ILGetSize(pidl2);
 689     pidlNew  = SHAlloc(len1+len2);
 690
 691     if (pidlNew)
 692     {
 693         memcpy(pidlNew,pidl1,len1);
 694         memcpy(((BYTE *)pidlNew)+len1,pidl2,len2);
 695     }
 696
 697     /*  TRACE(pidl,"--new pidl=%p\n",pidlNew);*/
 698     return pidlNew;
 699 }
 700
 701 /*************************************************************************
 702  *  SHGetRealIDL [SHELL32.98]
 703  *
 704  * NOTES
 705  */
 706 HRESULT WINAPI SHGetRealIDL(LPSHELLFOLDER lpsf, LPCITEMIDLIST pidlSimple, LPITEMIDLIST *pidlReal)
 707 {
 708     IDataObject* pDataObj;
 709     HRESULT hr;
 710
 711     hr = IShellFolder_GetUIObjectOf(lpsf, 0, 1, &pidlSimple,
 712                              &IID_IDataObject, 0, (LPVOID*)&pDataObj);
 713     if (SUCCEEDED(hr))
 714     {
 715         STGMEDIUM medium;
 716         FORMATETC fmt;
 717
 718         fmt.cfFormat = RegisterClipboardFormatW(CFSTR_SHELLIDLISTW);
 719         fmt.ptd = NULL;
 720         fmt.dwAspect = DVASPECT_CONTENT;
 721         fmt.lindex = -1;
 722         fmt.tymed = TYMED_HGLOBAL;
 723
 724         hr = IDataObject_GetData(pDataObj, &fmt, &medium);
 725
 726         IDataObject_Release(pDataObj);
 727
 728         if (SUCCEEDED(hr))
 729         {
 730             /*assert(pida->cidl==1);*/
 731             LPIDA pida = GlobalLock(medium.u.hGlobal);
 732
 733             LPCITEMIDLIST pidl_folder = (LPCITEMIDLIST) ((LPBYTE)pida+pida->aoffset[0]);
 734             LPCITEMIDLIST pidl_child = (LPCITEMIDLIST) ((LPBYTE)pida+pida->aoffset[1]);
 735
 736             *pidlReal = ILCombine(pidl_folder, pidl_child);
 737
 738             if (!*pidlReal)
 739                 hr = E_OUTOFMEMORY;
 740
 741             GlobalUnlock(medium.u.hGlobal);
 742             GlobalFree(medium.u.hGlobal);
 743         }
 744     }
 745
 746     return hr;
 747 }
 748
 749 /*************************************************************************
 750  *  SHLogILFromFSIL [SHELL32.95]
 751  *
 752  * NOTES
 753  *  pild = CSIDL_DESKTOP    ret = 0
 754  *  pild = CSIDL_DRIVES     ret = 0
 755  */
 756 LPITEMIDLIST WINAPI SHLogILFromFSIL(LPITEMIDLIST pidl)
 757 {
 758     FIXME("(pidl=%p)\n",pidl);
 759
 760     pdump(pidl);
 761
 762     return 0;
 763 }
 764
 765 /*************************************************************************
 766  * ILGetSize                 [SHELL32.152]
 767  *
 768  * Gets the byte size of an ItemIDList including zero terminator
 769  *
 770  * PARAMS
 771  *  pidl       [I]   ItemIDList
 772  *
 773  * RETURNS
 774  *  size of pidl in bytes
 775  *
 776  * NOTES
 777  *  exported by ordinal
 778  */
 779 UINT WINAPI ILGetSize(LPCITEMIDLIST pidl)
 780 {
 781     LPCSHITEMID si = &(pidl->mkid);
 782     UINT len=0;
 783
 784     if (pidl)
 785     {
 786         while (si->cb)
 787         {
 788             len += si->cb;
 789             si  = (LPCSHITEMID)(((const BYTE*)si)+si->cb);
 790         }
 791         len += 2;
 792     }
 793     TRACE("pidl=%p size=%u\n",pidl, len);
 794     return len;
 795 }
 796
 797 /*************************************************************************
 798  * ILGetNext                 [SHELL32.153]
 799  *
 800  * Gets the next ItemID of an ItemIDList
 801  *
 802  * PARAMS
 803  *  pidl       [I]   ItemIDList
 804  *
 805  * RETURNS
 806  *  null -> null
 807  *  desktop -> null
 808  *  simple pidl -> pointer to 0x0000 element
 809  *
 810  * NOTES
 811  *  exported by ordinal.
 812  */
 813 LPITEMIDLIST WINAPI ILGetNext(LPCITEMIDLIST pidl)
 814 {
 815     WORD len;
 816
 817     TRACE("%p\n", pidl);
 818
 819     if (pidl)
 820     {
 821         len =  pidl->mkid.cb;
 822         if (len)
 823         {
 824             pidl = (LPCITEMIDLIST) (((const BYTE*)pidl)+len);
 825             TRACE("-- %p\n", pidl);
 826             return (LPITEMIDLIST)pidl;
 827         }
 828     }
 829     return NULL;
 830 }
 831
 832 /*************************************************************************
 833  * ILAppend                  [SHELL32.154]
 834  *
 835  * Adds the single ItemID item to the ItemIDList indicated by pidl.
 836  * If bEnd is FALSE, inserts the item in the front of the list,
 837  * otherwise it adds the item to the end. (???)
 838  *
 839  * PARAMS
 840  *  pidl       [I]   ItemIDList to extend
 841  *  item       [I]   ItemID to prepend/append
 842  *  bEnd       [I]   Indicates if the item should be appended
 843  *
 844  * NOTES
 845  *  Destroys the passed in idlist! (???)
 846  */
 847 LPITEMIDLIST WINAPI ILAppend(LPITEMIDLIST pidl, LPCITEMIDLIST item, BOOL bEnd)
 848 {
 849     LPITEMIDLIST idlRet;
 850
 851     WARN("(pidl=%p,pidl=%p,%08u)semi-stub\n",pidl,item,bEnd);
 852
 853     pdump (pidl);
 854     pdump (item);
 855
 856     if (_ILIsDesktop(pidl))
 857     {
 858         idlRet = ILClone(item);
 859         SHFree (pidl);
 860         return idlRet;
 861     }
 862
 863     if (bEnd)
 864         idlRet = ILCombine(pidl, item);
 865     else
 866         idlRet = ILCombine(item, pidl);
 867
 868     SHFree(pidl);
 869     return idlRet;
 870 }
 871
 872 /*************************************************************************
 873  * ILFree                    [SHELL32.155]
 874  *
 875  * Frees memory (if not NULL) allocated by SHMalloc allocator
 876  *
 877  * PARAMS
 878  *  pidl         [I]
 879  *
 880  * RETURNS
 881  *  Nothing
 882  *
 883  * NOTES
 884  *  exported by ordinal
 885  */
 886 void WINAPI ILFree(LPITEMIDLIST pidl)
 887 {
 888     TRACE("(pidl=%p)\n",pidl);
 889     SHFree(pidl);
 890 }
 891
 892 /*************************************************************************
 893  * ILGlobalFree              [SHELL32.156]
 894  *
 895  * Frees memory (if not NULL) allocated by Alloc allocator
 896  *
 897  * PARAMS
 898  *  pidl         [I]
 899  *
 900  * RETURNS
 901  *  Nothing
 902  *
 903  * NOTES
 904  *  exported by ordinal.
 905  */
 906 void WINAPI ILGlobalFree( LPITEMIDLIST pidl)
 907 {
 908     TRACE("%p\n", pidl);
 909
 910     Free(pidl);
 911 }
 912
 913 /*************************************************************************
 914  * ILCreateFromPathA         [SHELL32.189]
 915  *
 916  * Creates a complex ItemIDList from a path and returns it.
 917  *
 918  * PARAMS
 919  *  path         [I]
 920  *
 921  * RETURNS
 922  *  the newly created complex ItemIDList or NULL if failed
 923  *
 924  * NOTES
 925  *  exported by ordinal.
 926  */
 927 LPITEMIDLIST WINAPI ILCreateFromPathA (LPCSTR path)
 928 {
 929     LPITEMIDLIST pidlnew = NULL;
 930
 931     TRACE_(shell)("%s\n", debugstr_a(path));
 932
 933     if (SUCCEEDED(SHILCreateFromPathA(path, &pidlnew, NULL)))
 934         return pidlnew;
 935     return NULL;
 936 }
 937
 938 /*************************************************************************
 939  * ILCreateFromPathW         [SHELL32.190]
 940  *
 941  * See ILCreateFromPathA.
 942  */
 943 LPITEMIDLIST WINAPI ILCreateFromPathW (LPCWSTR path)
 944 {
 945     LPITEMIDLIST pidlnew = NULL;
 946
 947     TRACE_(shell)("%s\n", debugstr_w(path));
 948
 949     if (SUCCEEDED(SHILCreateFromPathW(path, &pidlnew, NULL)))
 950         return pidlnew;
 951     return NULL;
 952 }
 953
 954 /*************************************************************************
 955  * ILCreateFromPath          [SHELL32.157]
 956  */
 957 LPITEMIDLIST WINAPI ILCreateFromPathAW (LPCVOID path)
 958 {
 959     if ( SHELL_OsIsUnicode())
 960         return ILCreateFromPathW (path);
 961     return ILCreateFromPathA (path);
 962 }
 963
 964 /*************************************************************************
 965  * _ILParsePathW             [internal]
 966  *
 967  * Creates an ItemIDList from a path and returns it.
 968  *
 969  * PARAMS
 970  *  path         [I]   path to parse and convert into an ItemIDList
 971  *  lpFindFile   [I]   pointer to buffer to initialize the FileSystem
 972  *                     Bind Data object with
 973  *  bBindCtx     [I]   indicates to create a BindContext and assign a
 974  *                     FileSystem Bind Data object
 975  *  ppidl        [O]   the newly create ItemIDList
 976  *  prgfInOut    [I/O] requested attributes on input and actual
 977  *                     attributes on return
 978  *
 979  * RETURNS
 980  *  NO_ERROR on success or an OLE error code
 981  *
 982  * NOTES
 983  *  If either lpFindFile is non-NULL or bBindCtx is TRUE, this function
 984  *  creates a BindContext object and assigns a FileSystem Bind Data object
 985  *  to it, passing the BindContext to IShellFolder_ParseDisplayName. Each
 986  *  IShellFolder uses that FileSystem Bind Data object of the BindContext
 987  *  to pass data about the current path element to the next object. This
 988  *  is used to avoid having to verify the current path element on disk, so
 989  *  that creating an ItemIDList from a nonexistent path still can work.
 990  */
 991 static HRESULT _ILParsePathW(LPCWSTR path, LPWIN32_FIND_DATAW lpFindFile,
 992                              BOOL bBindCtx, LPITEMIDLIST *ppidl, LPDWORD prgfInOut)
 993 {
 994     LPSHELLFOLDER pSF = NULL;
 995     LPBC pBC = NULL;
 996     HRESULT ret;
 997
 998     TRACE("%s %p %d (%p)->%p (%p)->0x%x\n", debugstr_w(path), lpFindFile, bBindCtx,
 999                                              ppidl, ppidl ? *ppidl : NULL,
1000                                              prgfInOut, prgfInOut ? *prgfInOut : 0);
1001
1002     ret = SHGetDesktopFolder(&pSF);
1003     if (FAILED(ret))
1004         return ret;
1005
1006     if (lpFindFile || bBindCtx)
1007         ret = IFileSystemBindData_Constructor(lpFindFile, &pBC);
1008
1009     if (SUCCEEDED(ret))
1010     {
1011         ret = IShellFolder_ParseDisplayName(pSF, 0, pBC, (LPOLESTR)path, NULL, ppidl, prgfInOut);
1012     }
1013
1014     if (pBC)
1015     {
1016         IBindCtx_Release(pBC);
1017         pBC = NULL;
1018     }
1019
1020     IShellFolder_Release(pSF);
1021
1022     if (FAILED(ret) && ppidl)
1023         *ppidl = NULL;
1024
1025     TRACE("%s %p 0x%x\n", debugstr_w(path), ppidl ? *ppidl : NULL, prgfInOut ? *prgfInOut : 0);
1026
1027     return ret;
1028 }
1029
1030 /*************************************************************************
1031  * SHSimpleIDListFromPath    [SHELL32.162]
1032  *
1033  * Creates a simple ItemIDList from a path and returns it. This function
1034  * does not fail on nonexistent paths.
1035  *
1036  * PARAMS
1037  *  path         [I]   path to parse and convert into an ItemIDList
1038  *
1039  * RETURNS
1040  *  the newly created simple ItemIDList
1041  *
1042  * NOTES
1043  *  Simple in the name does not mean a relative ItemIDList but rather a
1044  *  fully qualified list, where only the file name is filled in and the
1045  *  directory flag for those ItemID elements this is known about, eg.
1046  *  it is not the last element in the ItemIDList or the actual directory
1047  *  exists on disk.
1048  *  exported by ordinal.
1049  */
1050 LPITEMIDLIST WINAPI SHSimpleIDListFromPathA(LPCSTR lpszPath)
1051 {
1052     LPITEMIDLIST pidl = NULL;
1053     LPWSTR wPath = NULL;
1054     int len;
1055
1056     TRACE("%s\n", debugstr_a(lpszPath));
1057
1058     if (lpszPath)
1059     {
1060         len = MultiByteToWideChar(CP_ACP, 0, lpszPath, -1, NULL, 0);
1061         wPath = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR));
1062         MultiByteToWideChar(CP_ACP, 0, lpszPath, -1, wPath, len);
1063     }
1064
1065     _ILParsePathW(wPath, NULL, TRUE, &pidl, NULL);
1066
1067     HeapFree(GetProcessHeap(), 0, wPath);
1068     TRACE("%s %p\n", debugstr_a(lpszPath), pidl);
1069     return pidl;
1070 }
1071
1072 LPITEMIDLIST WINAPI SHSimpleIDListFromPathW(LPCWSTR lpszPath)
1073 {
1074     LPITEMIDLIST pidl = NULL;
1075
1076     TRACE("%s\n", debugstr_w(lpszPath));
1077
1078     _ILParsePathW(lpszPath, NULL, TRUE, &pidl, NULL);
1079     TRACE("%s %p\n", debugstr_w(lpszPath), pidl);
1080     return pidl;
1081 }
1082
1083 LPITEMIDLIST WINAPI SHSimpleIDListFromPathAW(LPCVOID lpszPath)
1084 {
1085     if ( SHELL_OsIsUnicode())
1086         return SHSimpleIDListFromPathW (lpszPath);
1087     return SHSimpleIDListFromPathA (lpszPath);
1088 }
1089
1090 /*************************************************************************
1091  * SHGetDataFromIDListA [SHELL32.247]
1092  *
1093  * NOTES
1094  *  the pidl can be a simple one. since we can't get the path out of the pidl
1095  *  we have to take all data from the pidl
1096  */
1097 HRESULT WINAPI SHGetDataFromIDListA(LPSHELLFOLDER psf, LPCITEMIDLIST pidl,
1098                                     int nFormat, LPVOID dest, int len)
1099 {
1100     LPSTR filename, shortname;
1101     WIN32_FIND_DATAA * pfd;
1102
1103     TRACE_(shell)("sf=%p pidl=%p 0x%04x %p 0x%04x stub\n",psf,pidl,nFormat,dest,len);
1104
1105     pdump(pidl);
1106     if (!psf || !dest)
1107         return E_INVALIDARG;
1108
1109     switch (nFormat)
1110     {
1111     case SHGDFIL_FINDDATA:
1112         pfd = dest;
1113
1114         if (_ILIsDrive(pidl) || _ILIsSpecialFolder(pidl))
1115             return E_INVALIDARG;
1116
1117         if (len < sizeof(WIN32_FIND_DATAA))
1118             return E_INVALIDARG;
1119
1120         ZeroMemory(pfd, sizeof (WIN32_FIND_DATAA));
1121         _ILGetFileDateTime( pidl, &(pfd->ftLastWriteTime));
1122         pfd->dwFileAttributes = _ILGetFileAttributes(pidl, NULL, 0);
1123         pfd->nFileSizeLow = _ILGetFileSize ( pidl, NULL, 0);
1124
1125         filename = _ILGetTextPointer(pidl);
1126         shortname = _ILGetSTextPointer(pidl);
1127
1128         if (filename)
1129             lstrcpynA(pfd->cFileName, filename, sizeof(pfd->cFileName));
1130         else
1131             pfd->cFileName[0] = '\0';
1132
1133         if (shortname)
1134             lstrcpynA(pfd->cAlternateFileName, shortname, sizeof(pfd->cAlternateFileName));
1135         else
1136             pfd->cAlternateFileName[0] = '\0';
1137         return NOERROR;
1138
1139     case SHGDFIL_NETRESOURCE:
1140     case SHGDFIL_DESCRIPTIONID:
1141         FIXME_(shell)("SHGDFIL %i stub\n", nFormat);
1142         break;
1143
1144     default:
1145         ERR_(shell)("Unknown SHGDFIL %i, please report\n", nFormat);
1146     }
1147
1148     return E_INVALIDARG;
1149 }
1150
1151 /*************************************************************************
1152  * SHGetDataFromIDListW [SHELL32.248]
1153  *
1154  */
1155 HRESULT WINAPI SHGetDataFromIDListW(LPSHELLFOLDER psf, LPCITEMIDLIST pidl,
1156                                     int nFormat, LPVOID dest, int len)
1157 {
1158     LPSTR filename, shortname;
1159     WIN32_FIND_DATAW * pfd = dest;
1160
1161     TRACE_(shell)("sf=%p pidl=%p 0x%04x %p 0x%04x stub\n",psf,pidl,nFormat,dest,len);
1162
1163     pdump(pidl);
1164
1165     if (!psf || !dest)
1166         return E_INVALIDARG;
1167
1168     switch (nFormat)
1169     {
1170     case SHGDFIL_FINDDATA:
1171         pfd = dest;
1172
1173         if (_ILIsDrive(pidl))
1174             return E_INVALIDARG;
1175
1176         if (len < sizeof(WIN32_FIND_DATAW))
1177             return E_INVALIDARG;
1178
1179         ZeroMemory(pfd, sizeof (WIN32_FIND_DATAA));
1180         _ILGetFileDateTime( pidl, &(pfd->ftLastWriteTime));
1181         pfd->dwFileAttributes = _ILGetFileAttributes(pidl, NULL, 0);
1182         pfd->nFileSizeLow = _ILGetFileSize ( pidl, NULL, 0);
1183
1184         filename = _ILGetTextPointer(pidl);
1185         shortname = _ILGetSTextPointer(pidl);
1186
1187         if (!filename)
1188             pfd->cFileName[0] = '\0';
1189         else if (!MultiByteToWideChar(CP_ACP, 0, filename, -1, pfd->cFileName, MAX_PATH))
1190             pfd->cFileName[MAX_PATH-1] = 0;
1191
1192         if (!shortname)
1193             pfd->cAlternateFileName[0] = '\0';
1194         else if (!MultiByteToWideChar(CP_ACP, 0, shortname, -1, pfd->cAlternateFileName, 14))
1195             pfd->cAlternateFileName[13] = 0;
1196         return NOERROR;
1197
1198     case SHGDFIL_NETRESOURCE:
1199     case SHGDFIL_DESCRIPTIONID:
1200         FIXME_(shell)("SHGDFIL %i stub\n", nFormat);
1201         break;
1202
1203     default:
1204         ERR_(shell)("Unknown SHGDFIL %i, please report\n", nFormat);
1205     }
1206
1207     return E_INVALIDARG;
1208 }
1209
1210 /*************************************************************************
1211  * SHGetPathFromIDListA        [SHELL32.@][NT 4.0: SHELL32.220]
1212  *
1213  * PARAMETERS
1214  *  pidl,   [IN] pidl
1215  *  pszPath [OUT] path
1216  *
1217  * RETURNS
1218  *  path from a passed PIDL.
1219  *
1220  * NOTES
1221  *    NULL returns FALSE
1222  *    desktop pidl gives path to desktop directory back
1223  *    special pidls returning FALSE
1224  */
1225 BOOL WINAPI SHGetPathFromIDListA(LPCITEMIDLIST pidl, LPSTR pszPath)
1226 {
1227     WCHAR wszPath[MAX_PATH];
1228     BOOL bSuccess;
1229
1230     bSuccess = SHGetPathFromIDListW(pidl, wszPath);
1231     WideCharToMultiByte(CP_ACP, 0, wszPath, -1, pszPath, MAX_PATH, NULL, NULL);
1232
1233     return bSuccess;
1234 }
1235
1236 /*************************************************************************
1237  * SHGetPathFromIDListW             [SHELL32.@]
1238  *
1239  * See SHGetPathFromIDListA.
1240  */
1241 BOOL WINAPI SHGetPathFromIDListW(LPCITEMIDLIST pidl, LPWSTR pszPath)
1242 {
1243     HRESULT hr;
1244     LPCITEMIDLIST pidlLast;
1245     LPSHELLFOLDER psfFolder;
1246     DWORD dwAttributes;
1247     STRRET strret;
1248
1249     TRACE_(shell)("(pidl=%p,%p)\n", pidl, pszPath);
1250     pdump(pidl);
1251
1252     *pszPath = '\0';
1253     if (!pidl)
1254         return FALSE;
1255
1256     hr = SHBindToParent(pidl, &IID_IShellFolder, (VOID**)&psfFolder, &pidlLast);
1257     if (FAILED(hr)) return FALSE;
1258
1259     dwAttributes = SFGAO_FILESYSTEM;
1260     hr = IShellFolder_GetAttributesOf(psfFolder, 1, &pidlLast, &dwAttributes);
1261     if (FAILED(hr) || !(dwAttributes & SFGAO_FILESYSTEM)) {
1262         IShellFolder_Release(psfFolder);
1263         return FALSE;
1264     }
1265
1266     hr = IShellFolder_GetDisplayNameOf(psfFolder, pidlLast, SHGDN_FORPARSING, &strret);
1267     IShellFolder_Release(psfFolder);
1268     if (FAILED(hr)) return FALSE;
1269
1270     hr = StrRetToBufW(&strret, pidlLast, pszPath, MAX_PATH);
1271
1272     TRACE_(shell)("-- %s, 0x%08x\n",debugstr_w(pszPath), hr);
1273     return SUCCEEDED(hr);
1274 }
1275
1276 /*************************************************************************
1277  *    SHBindToParent        [shell version 5.0]
1278  */
1279 HRESULT WINAPI SHBindToParent(LPCITEMIDLIST pidl, REFIID riid, LPVOID *ppv, LPCITEMIDLIST *ppidlLast)
1280 {
1281     IShellFolder    * psfDesktop;
1282     HRESULT         hr=E_FAIL;
1283
1284     TRACE_(shell)("pidl=%p\n", pidl);
1285     pdump(pidl);
1286
1287     if (!pidl || !ppv)
1288         return E_INVALIDARG;
1289
1290     *ppv = NULL;
1291     if (ppidlLast)
1292         *ppidlLast = NULL;
1293
1294     hr = SHGetDesktopFolder(&psfDesktop);
1295     if (FAILED(hr))
1296         return hr;
1297
1298     if (_ILIsPidlSimple(pidl))
1299     {
1300         /* we are on desktop level */
1301         hr = IShellFolder_QueryInterface(psfDesktop, riid, ppv);
1302     }
1303     else
1304     {
1305         LPITEMIDLIST pidlParent = ILClone(pidl);
1306         ILRemoveLastID(pidlParent);
1307         hr = IShellFolder_BindToObject(psfDesktop, pidlParent, NULL, riid, ppv);
1308         SHFree (pidlParent);
1309     }
1310
1311     IShellFolder_Release(psfDesktop);
1312
1313     if (SUCCEEDED(hr) && ppidlLast)
1314         *ppidlLast = ILFindLastID(pidl);
1315
1316     TRACE_(shell)("-- psf=%p pidl=%p ret=0x%08x\n", *ppv, (ppidlLast)?*ppidlLast:NULL, hr);
1317     return hr;
1318 }
1319
1320 /**************************************************************************
1321  *
1322  *        internal functions
1323  *
1324  *    ### 1. section creating pidls ###
1325  *
1326  *************************************************************************
1327  */
1328
1329 /* Basic PIDL constructor.  Allocates size + 5 bytes, where:
1330  * - two bytes are SHITEMID.cb
1331  * - one byte is PIDLDATA.type
1332  * - two bytes are the NULL PIDL terminator
1333  * Sets type of the returned PIDL to type.
1334  */
1335 static LPITEMIDLIST _ILAlloc(PIDLTYPE type, unsigned int size)
1336 {
1337     LPITEMIDLIST pidlOut = NULL;
1338
1339     pidlOut = SHAlloc(size + 5);
1340     if(pidlOut)
1341     {
1342         LPPIDLDATA pData;
1343         LPITEMIDLIST pidlNext;
1344
1345         ZeroMemory(pidlOut, size + 5);
1346         pidlOut->mkid.cb = size + 3;
1347
1348         pData = _ILGetDataPointer(pidlOut);
1349         if (pData)
1350             pData->type = type;
1351
1352         pidlNext = ILGetNext(pidlOut);
1353         if (pidlNext)
1354             pidlNext->mkid.cb = 0x00;
1355         TRACE("-- (pidl=%p, size=%u)\n", pidlOut, size);
1356     }
1357
1358     return pidlOut;
1359 }
1360
1361 LPITEMIDLIST _ILCreateDesktop(void)
1362 {
1363     LPITEMIDLIST ret;
1364
1365     TRACE("()\n");
1366     ret = SHAlloc(2);
1367     if (ret)
1368         ret->mkid.cb = 0;
1369     return ret;
1370 }
1371
1372 LPITEMIDLIST _ILCreateMyComputer(void)
1373 {
1374     TRACE("()\n");
1375     return _ILCreateGuid(PT_GUID, &CLSID_MyComputer);
1376 }
1377
1378 LPITEMIDLIST _ILCreateMyDocuments(void)
1379 {
1380     TRACE("()\n");
1381     return _ILCreateGuid(PT_GUID, &CLSID_MyDocuments);
1382 }
1383
1384 LPITEMIDLIST _ILCreateIExplore(void)
1385 {
1386     TRACE("()\n");
1387     return _ILCreateGuid(PT_GUID, &CLSID_Internet);
1388 }
1389
1390 LPITEMIDLIST _ILCreateControlPanel(void)
1391 {
1392     LPITEMIDLIST parent = _ILCreateGuid(PT_GUID, &CLSID_MyComputer), ret = NULL;
1393
1394     TRACE("()\n");
1395     if (parent)
1396     {
1397         LPITEMIDLIST cpl = _ILCreateGuid(PT_SHELLEXT, &CLSID_ControlPanel);
1398
1399         if (cpl)
1400         {
1401             ret = ILCombine(parent, cpl);
1402             SHFree(cpl);
1403         }
1404         SHFree(parent);
1405     }
1406     return ret;
1407 }
1408
1409 LPITEMIDLIST _ILCreatePrinters(void)
1410 {
1411     LPITEMIDLIST parent = _ILCreateGuid(PT_GUID, &CLSID_MyComputer), ret = NULL;
1412
1413     TRACE("()\n");
1414     if (parent)
1415     {
1416         LPITEMIDLIST printers = _ILCreateGuid(PT_YAGUID, &CLSID_Printers);
1417
1418         if (printers)
1419         {
1420             ret = ILCombine(parent, printers);
1421             SHFree(printers);
1422         }
1423         SHFree(parent);
1424     }
1425     return ret;
1426 }
1427
1428 LPITEMIDLIST _ILCreateNetwork(void)
1429 {
1430     TRACE("()\n");
1431     return _ILCreateGuid(PT_GUID, &CLSID_NetworkPlaces);
1432 }
1433
1434 LPITEMIDLIST _ILCreateBitBucket(void)
1435 {
1436     TRACE("()\n");
1437     return _ILCreateGuid(PT_GUID, &CLSID_RecycleBin);
1438 }
1439
1440 LPITEMIDLIST _ILCreateNetHood(void)
1441 {
1442     TRACE("()\n");
1443     return _ILCreateGuid(PT_GUID, &CLSID_NetworkPlaces);
1444 }
1445
1446 LPITEMIDLIST _ILCreateGuid(PIDLTYPE type, REFIID guid)
1447 {
1448     LPITEMIDLIST pidlOut;
1449
1450     if (type == PT_SHELLEXT || type == PT_GUID || type == PT_YAGUID)
1451     {
1452         pidlOut = _ILAlloc(type, sizeof(GUIDStruct));
1453         if (pidlOut)
1454         {
1455             LPPIDLDATA pData = _ILGetDataPointer(pidlOut);
1456
1457             pData->u.guid.guid = *guid;
1458             TRACE("-- create GUID-pidl %s\n",
1459                   debugstr_guid(&(pData->u.guid.guid)));
1460         }
1461     }
1462     else
1463     {
1464         WARN("%d: invalid type for GUID\n", type);
1465         pidlOut = NULL;
1466     }
1467     return pidlOut;
1468 }
1469
1470 LPITEMIDLIST _ILCreateGuidFromStrA(LPCSTR szGUID)
1471 {
1472     IID iid;
1473
1474     if (FAILED(SHCLSIDFromStringA(szGUID, &iid)))
1475     {
1476         ERR("%s is not a GUID\n", szGUID);
1477         return NULL;
1478     }
1479     return _ILCreateGuid(PT_GUID, &iid);
1480 }
1481
1482 LPITEMIDLIST _ILCreateGuidFromStrW(LPCWSTR szGUID)
1483 {
1484     IID iid;
1485
1486     if (FAILED(SHCLSIDFromStringW(szGUID, &iid)))
1487     {
1488         ERR("%s is not a GUID\n", debugstr_w(szGUID));
1489         return NULL;
1490     }
1491     return _ILCreateGuid(PT_GUID, &iid);
1492 }
1493
1494 LPITEMIDLIST _ILCreateFromFindDataW( const WIN32_FIND_DATAW *wfd )
1495 {
1496     char    buff[MAX_PATH + 14 +1]; /* see WIN32_FIND_DATA */
1497     DWORD   len, len1, wlen, alen;
1498     LPITEMIDLIST pidl;
1499     PIDLTYPE type;
1500
1501     if (!wfd)
1502         return NULL;
1503
1504     TRACE("(%s, %s)\n",debugstr_w(wfd->cAlternateFileName), debugstr_w(wfd->cFileName));
1505
1506     /* prepare buffer with both names */
1507     len = WideCharToMultiByte(CP_ACP,0,wfd->cFileName,-1,buff,MAX_PATH,NULL,NULL);
1508     len1 = WideCharToMultiByte(CP_ACP,0,wfd->cAlternateFileName,-1, buff+len, sizeof(buff)-len, NULL, NULL);
1509     alen = len + len1;
1510
1511     type = (wfd->dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) ? PT_FOLDER : PT_VALUE;
1512
1513     wlen = lstrlenW(wfd->cFileName) + 1;
1514     pidl = _ILAlloc(type, FIELD_OFFSET(FileStruct, szNames[alen + (alen & 1)]) +
1515                     FIELD_OFFSET(FileStructW, wszName[wlen]) + sizeof(WORD));
1516     if (pidl)
1517     {
1518         LPPIDLDATA pData = _ILGetDataPointer(pidl);
1519         FileStruct *fs = &pData->u.file;
1520         FileStructW *fsw;
1521         WORD *pOffsetW;
1522
1523         FileTimeToDosDateTime( &wfd->ftLastWriteTime, &fs->uFileDate, &fs->uFileTime);
1524         fs->dwFileSize = wfd->nFileSizeLow;
1525         fs->uFileAttribs = wfd->dwFileAttributes;
1526         memcpy(fs->szNames, buff, alen);
1527
1528         fsw = (FileStructW*)(pData->u.file.szNames + alen + (alen & 0x1));
1529         fsw->cbLen = FIELD_OFFSET(FileStructW, wszName[wlen]) + sizeof(WORD);
1530         FileTimeToDosDateTime( &wfd->ftCreationTime, &fsw->uCreationDate, &fsw->uCreationTime);
1531         FileTimeToDosDateTime( &wfd->ftLastAccessTime, &fsw->uLastAccessDate, &fsw->uLastAccessTime);
1532         memcpy(fsw->wszName, wfd->cFileName, wlen * sizeof(WCHAR));
1533
1534         pOffsetW = (WORD*)((LPBYTE)pidl + pidl->mkid.cb - sizeof(WORD));
1535         *pOffsetW = (LPBYTE)fsw - (LPBYTE)pidl;
1536         TRACE("-- Set Value: %s\n",debugstr_w(fsw->wszName));
1537     }
1538     return pidl;
1539
1540 }
1541
1542 HRESULT _ILCreateFromPathW(LPCWSTR szPath, LPITEMIDLIST* ppidl)
1543 {
1544     HANDLE hFile;
1545     WIN32_FIND_DATAW stffile;
1546
1547     if (!ppidl)
1548         return E_INVALIDARG;
1549
1550     hFile = FindFirstFileW(szPath, &stffile);
1551     if (hFile == INVALID_HANDLE_VALUE)
1552         return HRESULT_FROM_WIN32(ERROR_FILE_NOT_FOUND);
1553
1554     FindClose(hFile);
1555
1556     *ppidl = _ILCreateFromFindDataW(&stffile);
1557
1558     return *ppidl ? S_OK : E_OUTOFMEMORY;
1559 }
1560
1561 LPITEMIDLIST _ILCreateDrive(LPCWSTR lpszNew)
1562 {
1563     LPITEMIDLIST pidlOut;
1564
1565     TRACE("(%s)\n",debugstr_w(lpszNew));
1566
1567     pidlOut = _ILAlloc(PT_DRIVE, sizeof(DriveStruct));
1568     if (pidlOut)
1569     {
1570         LPSTR pszDest;
1571
1572         pszDest = _ILGetTextPointer(pidlOut);
1573         if (pszDest)
1574         {
1575             strcpy(pszDest, "x:\\");
1576             pszDest[0]=toupperW(lpszNew[0]);
1577             TRACE("-- create Drive: %s\n", debugstr_a(pszDest));
1578         }
1579     }
1580     return pidlOut;
1581 }
1582
1583 LPITEMIDLIST _ILCreateEntireNetwork(void)
1584 {
1585     LPITEMIDLIST pidlOut;
1586
1587     TRACE("\n");
1588
1589     pidlOut = _ILAlloc(PT_NETWORK, FIELD_OFFSET(PIDLDATA, u.network.szNames[sizeof("Entire Network")]));
1590     if (pidlOut)
1591     {
1592         LPPIDLDATA pData = _ILGetDataPointer(pidlOut);
1593
1594         pData->u.network.dummy = 0;
1595         strcpy(pData->u.network.szNames, "Entire Network");
1596     }
1597     return pidlOut;
1598 }
1599
1600 /**************************************************************************
1601  *  _ILGetDrive()
1602  *
1603  *  Gets the text for the drive eg. 'c:\'
1604  *
1605  * RETURNS
1606  *  strlen (lpszText)
1607  */
1608 DWORD _ILGetDrive(LPCITEMIDLIST pidl,LPSTR pOut, UINT uSize)
1609 {
1610     TRACE("(%p,%p,%u)\n",pidl,pOut,uSize);
1611
1612     if(_ILIsMyComputer(pidl))
1613         pidl = ILGetNext(pidl);
1614
1615     if (pidl && _ILIsDrive(pidl))
1616         return _ILSimpleGetText(pidl, pOut, uSize);
1617
1618     return 0;
1619 }
1620
1621 /**************************************************************************
1622  *
1623  *    ### 2. section testing pidls ###
1624  *
1625  **************************************************************************
1626  *  _ILIsUnicode()
1627  *  _ILIsDesktop()
1628  *  _ILIsMyComputer()
1629  *  _ILIsSpecialFolder()
1630  *  _ILIsDrive()
1631  *  _ILIsFolder()
1632  *  _ILIsValue()
1633  *  _ILIsPidlSimple()
1634  */
1635 BOOL _ILIsUnicode(LPCITEMIDLIST pidl)
1636 {
1637     LPPIDLDATA lpPData = _ILGetDataPointer(pidl);
1638
1639     TRACE("(%p)\n",pidl);
1640
1641     return (pidl && lpPData && PT_VALUEW == lpPData->type);
1642 }
1643
1644 BOOL _ILIsDesktop(LPCITEMIDLIST pidl)
1645 {
1646     TRACE("(%p)\n",pidl);
1647
1648     return pidl && pidl->mkid.cb  ? 0 : 1;
1649 }
1650
1651 BOOL _ILIsMyComputer(LPCITEMIDLIST pidl)
1652 {
1653     REFIID iid = _ILGetGUIDPointer(pidl);
1654
1655     TRACE("(%p)\n",pidl);
1656
1657     if (iid)
1658         return IsEqualIID(iid, &CLSID_MyComputer);
1659     return FALSE;
1660 }
1661
1662 BOOL _ILIsSpecialFolder (LPCITEMIDLIST pidl)
1663 {
1664     LPPIDLDATA lpPData = _ILGetDataPointer(pidl);
1665
1666     TRACE("(%p)\n",pidl);
1667
1668     return (pidl && ( (lpPData && (PT_GUID== lpPData->type || PT_SHELLEXT== lpPData->type || PT_YAGUID == lpPData->type)) ||
1669               (pidl && pidl->mkid.cb == 0x00)
1670             ));
1671 }
1672
1673 BOOL _ILIsDrive(LPCITEMIDLIST pidl)
1674 {
1675     LPPIDLDATA lpPData = _ILGetDataPointer(pidl);
1676
1677     TRACE("(%p)\n",pidl);
1678
1679     return (pidl && lpPData && (PT_DRIVE == lpPData->type ||
1680                     PT_DRIVE1 == lpPData->type ||
1681                     PT_DRIVE2 == lpPData->type ||
1682                     PT_DRIVE3 == lpPData->type));
1683 }
1684
1685 BOOL _ILIsFolder(LPCITEMIDLIST pidl)
1686 {
1687     LPPIDLDATA lpPData = _ILGetDataPointer(pidl);
1688
1689     TRACE("(%p)\n",pidl);
1690
1691     return (pidl && lpPData && (PT_FOLDER == lpPData->type || PT_FOLDER1 == lpPData->type));
1692 }
1693
1694 BOOL _ILIsValue(LPCITEMIDLIST pidl)
1695 {
1696     LPPIDLDATA lpPData = _ILGetDataPointer(pidl);
1697
1698     TRACE("(%p)\n",pidl);
1699
1700     return (pidl && lpPData && PT_VALUE == lpPData->type);
1701 }
1702
1703 BOOL _ILIsCPanelStruct(LPCITEMIDLIST pidl)
1704 {
1705     LPPIDLDATA lpPData = _ILGetDataPointer(pidl);
1706
1707     TRACE("(%p)\n",pidl);
1708
1709     return (pidl && lpPData && (lpPData->type == 0));
1710 }
1711
1712 /**************************************************************************
1713  *    _ILIsPidlSimple
1714  */
1715 BOOL _ILIsPidlSimple(LPCITEMIDLIST pidl)
1716 {
1717     BOOL ret = TRUE;
1718
1719     if(! _ILIsDesktop(pidl))    /* pidl=NULL or mkid.cb=0 */
1720     {
1721         WORD len = pidl->mkid.cb;
1722         LPCITEMIDLIST pidlnext = (LPCITEMIDLIST) (((const BYTE*)pidl) + len );
1723
1724         if (pidlnext->mkid.cb)
1725             ret = FALSE;
1726     }
1727
1728     TRACE("%s\n", ret ? "Yes" : "No");
1729     return ret;
1730 }
1731
1732 /**************************************************************************
1733  *
1734  *    ### 3. section getting values from pidls ###
1735  */
1736
1737  /**************************************************************************
1738  *  _ILSimpleGetText
1739  *
1740  * gets the text for the first item in the pidl (eg. simple pidl)
1741  *
1742  * returns the length of the string
1743  */
1744 DWORD _ILSimpleGetText (LPCITEMIDLIST pidl, LPSTR szOut, UINT uOutSize)
1745 {
1746     DWORD        dwReturn=0;
1747     LPSTR        szSrc;
1748     LPWSTR       szSrcW;
1749     GUID const * riid;
1750     char szTemp[MAX_PATH];
1751
1752     TRACE("(%p %p %x)\n",pidl,szOut,uOutSize);
1753
1754     if (!pidl)
1755         return 0;
1756
1757     if (szOut)
1758         *szOut = 0;
1759
1760     if (_ILIsDesktop(pidl))
1761     {
1762         /* desktop */
1763         if (HCR_GetClassNameA(&CLSID_ShellDesktop, szTemp, MAX_PATH))
1764         {
1765             if (szOut)
1766                 lstrcpynA(szOut, szTemp, uOutSize);
1767
1768             dwReturn = strlen (szTemp);
1769         }
1770     }
1771     else if (( szSrc = _ILGetTextPointer(pidl) ))
1772     {
1773         /* filesystem */
1774         if (szOut)
1775             lstrcpynA(szOut, szSrc, uOutSize);
1776
1777         dwReturn = strlen(szSrc);
1778     }
1779     else if (( szSrcW = _ILGetTextPointerW(pidl) ))
1780     {
1781         /* unicode filesystem */
1782         WideCharToMultiByte(CP_ACP,0,szSrcW, -1, szTemp, MAX_PATH, NULL, NULL);
1783
1784         if (szOut)
1785             lstrcpynA(szOut, szTemp, uOutSize);
1786
1787         dwReturn = strlen (szTemp);
1788     }
1789     else if (( riid = _ILGetGUIDPointer(pidl) ))
1790     {
1791         /* special folder */
1792         if ( HCR_GetClassNameA(riid, szTemp, MAX_PATH) )
1793         {
1794             if (szOut)
1795                 lstrcpynA(szOut, szTemp, uOutSize);
1796
1797             dwReturn = strlen (szTemp);
1798         }
1799     }
1800     else
1801     {
1802         ERR("-- no text\n");
1803     }
1804
1805     TRACE("-- (%p=%s 0x%08x)\n",szOut,debugstr_a(szOut),dwReturn);
1806     return dwReturn;
1807 }
1808
1809  /**************************************************************************
1810  *  _ILSimpleGetTextW
1811  *
1812  * gets the text for the first item in the pidl (eg. simple pidl)
1813  *
1814  * returns the length of the string
1815  */
1816 DWORD _ILSimpleGetTextW (LPCITEMIDLIST pidl, LPWSTR szOut, UINT uOutSize)
1817 {
1818     DWORD   dwReturn;
1819     FileStructW *pFileStructW = _ILGetFileStructW(pidl);
1820
1821     TRACE("(%p %p %x)\n",pidl,szOut,uOutSize);
1822
1823     if (pFileStructW) {
1824         lstrcpynW(szOut, pFileStructW->wszName, uOutSize);
1825         dwReturn = lstrlenW(pFileStructW->wszName);
1826     } else {
1827         GUID const * riid;
1828         WCHAR szTemp[MAX_PATH];
1829         LPSTR szSrc;
1830         LPWSTR szSrcW;
1831         dwReturn=0;
1832
1833         if (!pidl)
1834             return 0;
1835
1836         if (szOut)
1837             *szOut = 0;
1838
1839         if (_ILIsDesktop(pidl))
1840         {
1841             /* desktop */
1842             if (HCR_GetClassNameW(&CLSID_ShellDesktop, szTemp, MAX_PATH))
1843             {
1844                 if (szOut)
1845                     lstrcpynW(szOut, szTemp, uOutSize);
1846
1847                 dwReturn = lstrlenW (szTemp);
1848             }
1849         }
1850         else if (( szSrcW = _ILGetTextPointerW(pidl) ))
1851         {
1852             /* unicode filesystem */
1853             if (szOut)
1854                 lstrcpynW(szOut, szSrcW, uOutSize);
1855
1856             dwReturn = lstrlenW(szSrcW);
1857         }
1858         else if (( szSrc = _ILGetTextPointer(pidl) ))
1859         {
1860             /* filesystem */
1861             MultiByteToWideChar(CP_ACP, 0, szSrc, -1, szTemp, MAX_PATH);
1862
1863             if (szOut)
1864                 lstrcpynW(szOut, szTemp, uOutSize);
1865
1866             dwReturn = lstrlenW (szTemp);
1867         }
1868         else if (( riid = _ILGetGUIDPointer(pidl) ))
1869         {
1870             /* special folder */
1871             if ( HCR_GetClassNameW(riid, szTemp, MAX_PATH) )
1872             {
1873                 if (szOut)
1874                     lstrcpynW(szOut, szTemp, uOutSize);
1875
1876                 dwReturn = lstrlenW (szTemp);
1877             }
1878         }
1879         else
1880         {
1881             ERR("-- no text\n");
1882         }
1883     }
1884
1885     TRACE("-- (%p=%s 0x%08x)\n",szOut,debugstr_w(szOut),dwReturn);
1886     return dwReturn;
1887 }
1888
1889 /**************************************************************************
1890  *
1891  *    ### 4. getting pointers to parts of pidls ###
1892  *
1893  **************************************************************************
1894  *  _ILGetDataPointer()
1895  */
1896 LPPIDLDATA _ILGetDataPointer(LPCITEMIDLIST pidl)
1897 {
1898     if(pidl && pidl->mkid.cb != 0x00)
1899         return (LPPIDLDATA)pidl->mkid.abID;
1900     return NULL;
1901 }
1902
1903 /**************************************************************************
1904  *  _ILGetTextPointerW()
1905  * gets a pointer to the unicode long filename string stored in the pidl
1906  */
1907 static LPWSTR _ILGetTextPointerW(LPCITEMIDLIST pidl)
1908 {
1909     /* TRACE(pidl,"(pidl%p)\n", pidl);*/
1910
1911     LPPIDLDATA pdata = _ILGetDataPointer(pidl);
1912
1913     if (!pdata)
1914         return NULL;
1915
1916     switch (pdata->type)
1917     {
1918     case PT_GUID:
1919     case PT_SHELLEXT:
1920     case PT_YAGUID:
1921         return NULL;
1922
1923     case PT_DRIVE:
1924     case PT_DRIVE1:
1925     case PT_DRIVE2:
1926     case PT_DRIVE3:
1927         /*return (LPSTR)&(pdata->u.drive.szDriveName);*/
1928         return NULL;
1929
1930     case PT_FOLDER:
1931     case PT_FOLDER1:
1932     case PT_VALUE:
1933     case PT_IESPECIAL1:
1934     case PT_IESPECIAL2:
1935         /*return (LPSTR)&(pdata->u.file.szNames);*/
1936         return NULL;
1937
1938     case PT_WORKGRP:
1939     case PT_COMP:
1940     case PT_NETWORK:
1941     case PT_NETPROVIDER:
1942     case PT_SHARE:
1943         /*return (LPSTR)&(pdata->u.network.szNames);*/
1944         return NULL;
1945
1946     case PT_VALUEW:
1947         return (LPWSTR)pdata->u.file.szNames;
1948     }
1949     return NULL;
1950 }
1951
1952
1953 /**************************************************************************
1954  *  _ILGetTextPointer()
1955  * gets a pointer to the long filename string stored in the pidl
1956  */
1957 LPSTR _ILGetTextPointer(LPCITEMIDLIST pidl)
1958 {
1959     /* TRACE(pidl,"(pidl%p)\n", pidl);*/
1960
1961     LPPIDLDATA pdata = _ILGetDataPointer(pidl);
1962
1963     if (!pdata)
1964         return NULL;
1965
1966     switch (pdata->type)
1967     {
1968     case PT_GUID:
1969     case PT_SHELLEXT:
1970     case PT_YAGUID:
1971         return NULL;
1972
1973     case PT_DRIVE:
1974     case PT_DRIVE1:
1975     case PT_DRIVE2:
1976     case PT_DRIVE3:
1977         return (LPSTR)pdata->u.drive.szDriveName;
1978
1979     case PT_FOLDER:
1980     case PT_FOLDER1:
1981     case PT_VALUE:
1982     case PT_IESPECIAL1:
1983     case PT_IESPECIAL2:
1984         return (LPSTR)pdata->u.file.szNames;
1985
1986     case PT_WORKGRP:
1987     case PT_COMP:
1988     case PT_NETWORK:
1989     case PT_NETPROVIDER:
1990     case PT_SHARE:
1991         return (LPSTR)pdata->u.network.szNames;
1992     }
1993     return NULL;
1994 }
1995
1996 /**************************************************************************
1997  *  _ILGetSTextPointer()
1998  * gets a pointer to the short filename string stored in the pidl
1999  */
2000 static LPSTR _ILGetSTextPointer(LPCITEMIDLIST pidl)
2001 {
2002     /* TRACE(pidl,"(pidl%p)\n", pidl); */
2003
2004     LPPIDLDATA pdata =_ILGetDataPointer(pidl);
2005
2006     if (!pdata)
2007         return NULL;
2008
2009     switch (pdata->type)
2010     {
2011     case PT_FOLDER:
2012     case PT_VALUE:
2013     case PT_IESPECIAL1:
2014     case PT_IESPECIAL2:
2015         return (LPSTR)(pdata->u.file.szNames + strlen (pdata->u.file.szNames) + 1);
2016
2017     case PT_WORKGRP:
2018         return (LPSTR)(pdata->u.network.szNames + strlen (pdata->u.network.szNames) + 1);
2019     }
2020     return NULL;
2021 }
2022
2023 /**************************************************************************
2024  * _ILGetGUIDPointer()
2025  *
2026  * returns reference to guid stored in some pidls
2027  */
2028 IID* _ILGetGUIDPointer(LPCITEMIDLIST pidl)
2029 {
2030     LPPIDLDATA pdata =_ILGetDataPointer(pidl);
2031
2032     TRACE("%p\n", pidl);
2033
2034     if (!pdata)
2035         return NULL;
2036
2037     TRACE("pdata->type 0x%04x\n", pdata->type);
2038     switch (pdata->type)
2039     {
2040     case PT_SHELLEXT:
2041     case PT_GUID:
2042     case PT_YAGUID:
2043         return &(pdata->u.guid.guid);
2044
2045     default:
2046         TRACE("Unknown pidl type 0x%04x\n", pdata->type);
2047         break;
2048     }
2049     return NULL;
2050 }
2051
2052 /******************************************************************************
2053  * _ILGetFileStructW [Internal]
2054  *
2055  * Get pointer the a SHITEMID's FileStructW field if present
2056  *
2057  * PARAMS
2058  *  pidl [I] The SHITEMID
2059  *
2060  * RETURNS
2061  *  Success: Pointer to pidl's FileStructW field.
2062  *  Failure: NULL
2063  */
2064 FileStructW* _ILGetFileStructW(LPCITEMIDLIST pidl) {
2065     FileStructW *pFileStructW;
2066     WORD cbOffset;
2067
2068     if (!(_ILIsValue(pidl) || _ILIsFolder(pidl)))
2069         return NULL;
2070
2071     cbOffset = *(const WORD *)((const BYTE *)pidl + pidl->mkid.cb - sizeof(WORD));
2072     pFileStructW = (FileStructW*)((LPBYTE)pidl + cbOffset);
2073
2074     /* Currently I don't see a fool prove way to figure out if a pidl is for sure of WinXP
2075      * style with a FileStructW member. If we switch all our shellfolder-implementations to
2076      * the new format, this won't be a problem. For now, we do as many sanity checks as possible. */
2077     if (cbOffset & 0x1 || /* FileStructW member is word aligned in the pidl */
2078         /* FileStructW is positioned after FileStruct */
2079         cbOffset < sizeof(pidl->mkid.cb) + sizeof(PIDLTYPE) + sizeof(FileStruct) ||
2080         /* There has to be enough space at cbOffset in the pidl to hold FileStructW and cbOffset */
2081         cbOffset > pidl->mkid.cb - sizeof(cbOffset) - sizeof(FileStructW) ||
2082         pidl->mkid.cb != cbOffset + pFileStructW->cbLen)
2083     {
2084         WARN("Invalid pidl format (cbOffset = %d)!\n", cbOffset);
2085         return NULL;
2086     }
2087
2088     return pFileStructW;
2089 }
2090
2091 /*************************************************************************
2092  * _ILGetFileDateTime
2093  *
2094  * Given the ItemIdList, get the FileTime
2095  *
2096  * PARAMS
2097  *      pidl        [I] The ItemIDList
2098  *      pFt         [I] the resulted FILETIME of the file
2099  *
2100  * RETURNS
2101  *     True if Successful
2102  *
2103  * NOTES
2104  *
2105  */
2106 BOOL _ILGetFileDateTime(LPCITEMIDLIST pidl, FILETIME *pFt)
2107 {
2108     LPPIDLDATA pdata = _ILGetDataPointer(pidl);
2109
2110     if (!pdata)
2111         return FALSE;
2112
2113     switch (pdata->type)
2114     {
2115     case PT_FOLDER:
2116     case PT_VALUE:
2117         DosDateTimeToFileTime(pdata->u.file.uFileDate, pdata->u.file.uFileTime, pFt);
2118         break;
2119     default:
2120         return FALSE;
2121     }
2122     return TRUE;
2123 }
2124
2125 BOOL _ILGetFileDate (LPCITEMIDLIST pidl, LPSTR pOut, UINT uOutSize)
2126 {
2127     FILETIME ft,lft;
2128     SYSTEMTIME time;
2129     BOOL ret;
2130
2131     if (_ILGetFileDateTime( pidl, &ft ))
2132     {
2133         FileTimeToLocalFileTime(&ft, &lft);
2134         FileTimeToSystemTime (&lft, &time);
2135
2136         ret = GetDateFormatA(LOCALE_USER_DEFAULT,DATE_SHORTDATE,&time, NULL,  pOut, uOutSize);
2137         if (ret)
2138         {
2139             /* Append space + time without seconds */
2140             pOut[ret-1] = ' ';
2141             GetTimeFormatA(LOCALE_USER_DEFAULT, TIME_NOSECONDS, &time, NULL, &pOut[ret], uOutSize - ret);
2142         }
2143     }
2144     else
2145     {
2146         pOut[0] = '\0';
2147         ret = FALSE;
2148     }
2149     return ret;
2150 }
2151
2152 /*************************************************************************
2153  * _ILGetFileSize
2154  *
2155  * Given the ItemIdList, get the FileSize
2156  *
2157  * PARAMS
2158  *    pidl     [I] The ItemIDList
2159  *    pOut     [I] The buffer to save the result
2160  *    uOutsize [I] The size of the buffer
2161  *
2162  * RETURNS
2163  *    The FileSize
2164  *
2165  * NOTES
2166  *    pOut can be null when no string is needed
2167  *
2168  */
2169 DWORD _ILGetFileSize (LPCITEMIDLIST pidl, LPSTR pOut, UINT uOutSize)
2170 {
2171     LPPIDLDATA pdata = _ILGetDataPointer(pidl);
2172     DWORD dwSize;
2173
2174     if (!pdata)
2175         return 0;
2176
2177     switch (pdata->type)
2178     {
2179     case PT_VALUE:
2180         dwSize = pdata->u.file.dwFileSize;
2181         if (pOut)
2182             StrFormatKBSizeA(dwSize, pOut, uOutSize);
2183         return dwSize;
2184     }
2185     if (pOut)
2186         *pOut = 0x00;
2187     return 0;
2188 }
2189
2190 BOOL _ILGetExtension (LPCITEMIDLIST pidl, LPSTR pOut, UINT uOutSize)
2191 {
2192     char szTemp[MAX_PATH];
2193     const char * pPoint;
2194     LPCITEMIDLIST  pidlTemp=pidl;
2195
2196     TRACE("pidl=%p\n",pidl);
2197
2198     if (!pidl)
2199         return FALSE;
2200
2201     pidlTemp = ILFindLastID(pidl);
2202
2203     if (!_ILIsValue(pidlTemp))
2204         return FALSE;
2205     if (!_ILSimpleGetText(pidlTemp, szTemp, MAX_PATH))
2206         return FALSE;
2207
2208     pPoint = PathFindExtensionA(szTemp);
2209
2210     if (!*pPoint)
2211         return FALSE;
2212
2213     pPoint++;
2214     lstrcpynA(pOut, pPoint, uOutSize);
2215     TRACE("%s\n",pOut);
2216
2217     return TRUE;
2218 }
2219
2220 /*************************************************************************
2221  * _ILGetFileType
2222  *
2223  * Given the ItemIdList, get the file type description
2224  *
2225  * PARAMS
2226  *      pidl        [I] The ItemIDList (simple)
2227  *      pOut        [I] The buffer to save the result
2228  *      uOutsize    [I] The size of the buffer
2229  *
2230  * RETURNS
2231  *    nothing
2232  *
2233  * NOTES
2234  *    This function copies as much as possible into the buffer.
2235  */
2236 void _ILGetFileType(LPCITEMIDLIST pidl, LPSTR pOut, UINT uOutSize)
2237 {
2238     if(_ILIsValue(pidl))
2239     {
2240         char sTemp[64];
2241
2242         if(uOutSize > 0)
2243             pOut[0] = 0;
2244         if (_ILGetExtension (pidl, sTemp, 64))
2245         {
2246             if (!( HCR_MapTypeToValueA(sTemp, sTemp, 64, TRUE)
2247                 && HCR_MapTypeToValueA(sTemp, pOut, uOutSize, FALSE )))
2248             {
2249                 lstrcpynA (pOut, sTemp, uOutSize - 6);
2250                 strcat (pOut, "-file");
2251             }
2252         }
2253     }
2254     else
2255         lstrcpynA(pOut, "Folder", uOutSize);
2256 }
2257
2258 /*************************************************************************
2259  * _ILGetFileAttributes
2260  *
2261  * Given the ItemIdList, get the Attrib string format
2262  *
2263  * PARAMS
2264  *      pidl        [I] The ItemIDList
2265  *      pOut        [I] The buffer to save the result
2266  *      uOutsize    [I] The size of the Buffer
2267  *
2268  * RETURNS
2269  *     Attributes
2270  *
2271  * FIXME
2272  *  return value 0 in case of error is a valid return value
2273  *
2274  */
2275 DWORD _ILGetFileAttributes(LPCITEMIDLIST pidl, LPSTR pOut, UINT uOutSize)
2276 {
2277     LPPIDLDATA pData = _ILGetDataPointer(pidl);
2278     WORD wAttrib = 0;
2279     int i;
2280
2281     if (!pData)
2282         return 0;
2283
2284     switch(pData->type)
2285     {
2286     case PT_FOLDER:
2287     case PT_VALUE:
2288         wAttrib = pData->u.file.uFileAttribs;
2289         break;
2290     }
2291
2292     if(uOutSize >= 6)
2293     {
2294         i=0;
2295         if(wAttrib & FILE_ATTRIBUTE_READONLY)
2296             pOut[i++] = 'R';
2297         if(wAttrib & FILE_ATTRIBUTE_HIDDEN)
2298             pOut[i++] = 'H';
2299         if(wAttrib & FILE_ATTRIBUTE_SYSTEM)
2300             pOut[i++] = 'S';
2301         if(wAttrib & FILE_ATTRIBUTE_ARCHIVE)
2302             pOut[i++] = 'A';
2303         if(wAttrib & FILE_ATTRIBUTE_COMPRESSED)
2304             pOut[i++] = 'C';
2305         pOut[i] = 0x00;
2306     }
2307     return wAttrib;
2308 }
2309
2310 /*************************************************************************
2311  * ILFreeaPidl
2312  *
2313  * free a aPidl struct
2314  */
2315 void _ILFreeaPidl(LPITEMIDLIST * apidl, UINT cidl)
2316 {
2317     UINT   i;
2318
2319     if (apidl)
2320     {
2321         for (i = 0; i < cidl; i++)
2322             SHFree(apidl[i]);
2323         SHFree(apidl);
2324     }
2325 }
2326
2327 /*************************************************************************
2328  * ILCopyaPidl
2329  *
2330  * copies an aPidl struct
2331  */
2332 LPITEMIDLIST* _ILCopyaPidl(const LPCITEMIDLIST * apidlsrc, UINT cidl)
2333 {
2334     UINT i;
2335     LPITEMIDLIST *apidldest;
2336
2337     apidldest = SHAlloc(cidl * sizeof(LPITEMIDLIST));
2338     if (!apidlsrc)
2339         return NULL;
2340
2341     for (i = 0; i < cidl; i++)
2342         apidldest[i] = ILClone(apidlsrc[i]);
2343
2344     return apidldest;
2345 }
2346
2347 /*************************************************************************
2348  * _ILCopyCidaToaPidl
2349  *
2350  * creates aPidl from CIDA
2351  */
2352 LPITEMIDLIST* _ILCopyCidaToaPidl(LPITEMIDLIST* pidl, const CIDA * cida)
2353 {
2354     UINT i;
2355     LPITEMIDLIST *dst;
2356
2357     dst = SHAlloc(cida->cidl * sizeof(LPITEMIDLIST));
2358     if (!dst)
2359         return NULL;
2360
2361     if (pidl)
2362         *pidl = ILClone((LPCITEMIDLIST)(&((const BYTE*)cida)[cida->aoffset[0]]));
2363
2364     for (i = 0; i < cida->cidl; i++)
2365         dst[i] = ILClone((LPCITEMIDLIST)(&((const BYTE*)cida)[cida->aoffset[i + 1]]));
2366
2367     return dst;
2368 }
2369
2370 HRESULT WINAPI SHCreateShellItem(LPCITEMIDLIST pidlParent,
2371     IShellFolder *psfParent, LPCITEMIDLIST pidl, void **ppsi)
2372 {
2373     FIXME("STUB: %p %p %p %p\n",pidlParent, psfParent, pidl, ppsi);
2374     return E_NOINTERFACE;
2375 }