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  * ILGetDisplayNameExA
  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 static BOOL 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 /*************************************************************************
 164  * ILGetDisplayNameEx        [SHELL32.186]
 165  */
 166 BOOL WINAPI ILGetDisplayNameEx(LPSHELLFOLDER psf, LPCITEMIDLIST pidl, LPVOID path, DWORD type)
 167 {
 168     TRACE_(shell)("%p %p %p %d\n", psf, pidl, path, type);
 169
 170     if (SHELL_OsIsUnicode())
 171         return ILGetDisplayNameExW(psf, pidl, path, type);
 172     return ILGetDisplayNameExA(psf, pidl, path, type);
 173 }
 174
 175 /*************************************************************************
 176  * ILGetDisplayName            [SHELL32.15]
 177  */
 178 BOOL WINAPI ILGetDisplayName(LPCITEMIDLIST pidl, LPVOID path)
 179 {
 180     TRACE_(shell)("%p %p\n", pidl, path);
 181
 182     if (SHELL_OsIsUnicode())
 183         return ILGetDisplayNameExW(NULL, pidl, path, ILGDN_FORPARSING);
 184     return ILGetDisplayNameExA(NULL, pidl, path, ILGDN_FORPARSING);
 185 }
 186
 187 /*************************************************************************
 188  * ILFindLastID [SHELL32.16]
 189  *
 190  * NOTES
 191  *   observed: pidl=Desktop return=pidl
 192  */
 193 LPITEMIDLIST WINAPI ILFindLastID(LPCITEMIDLIST pidl)
 194 {
 195     LPCITEMIDLIST   pidlLast = pidl;
 196
 197     TRACE("(pidl=%p)\n",pidl);
 198
 199     if (!pidl)
 200         return NULL;
 201
 202     while (pidl->mkid.cb)
 203     {
 204         pidlLast = pidl;
 205         pidl = ILGetNext(pidl);
 206     }
 207     return (LPITEMIDLIST)pidlLast;
 208 }
 209
 210 /*************************************************************************
 211  * ILRemoveLastID [SHELL32.17]
 212  *
 213  * NOTES
 214  *   when pidl=Desktop return=FALSE
 215  */
 216 BOOL WINAPI ILRemoveLastID(LPITEMIDLIST pidl)
 217 {
 218     TRACE_(shell)("pidl=%p\n",pidl);
 219
 220     if (!pidl || !pidl->mkid.cb)
 221         return 0;
 222     ILFindLastID(pidl)->mkid.cb = 0;
 223     return 1;
 224 }
 225
 226 /*************************************************************************
 227  * ILClone [SHELL32.18]
 228  *
 229  * NOTES
 230  *    duplicate an idlist
 231  */
 232 LPITEMIDLIST WINAPI ILClone (LPCITEMIDLIST pidl)
 233 {
 234     DWORD    len;
 235     LPITEMIDLIST  newpidl;
 236
 237     if (!pidl)
 238         return NULL;
 239
 240     len = ILGetSize(pidl);
 241     newpidl = SHAlloc(len);
 242     if (newpidl)
 243         memcpy(newpidl,pidl,len);
 244
 245     TRACE("pidl=%p newpidl=%p\n",pidl, newpidl);
 246     pdump(pidl);
 247
 248     return newpidl;
 249 }
 250
 251 /*************************************************************************
 252  * ILCloneFirst [SHELL32.19]
 253  *
 254  * NOTES
 255  *  duplicates the first idlist of a complex pidl
 256  */
 257 LPITEMIDLIST WINAPI ILCloneFirst(LPCITEMIDLIST pidl)
 258 {
 259     DWORD len;
 260     LPITEMIDLIST pidlNew = NULL;
 261
 262     TRACE("pidl=%p\n", pidl);
 263     pdump(pidl);
 264
 265     if (pidl)
 266     {
 267         len = pidl->mkid.cb;
 268         pidlNew = SHAlloc(len+2);
 269         if (pidlNew)
 270         {
 271             memcpy(pidlNew,pidl,len+2);        /* 2 -> mind a desktop pidl */
 272
 273             if (len)
 274                 ILGetNext(pidlNew)->mkid.cb = 0x00;
 275         }
 276     }
 277     TRACE("-- newpidl=%p\n",pidlNew);
 278
 279     return pidlNew;
 280 }
 281
 282 /*************************************************************************
 283  * ILLoadFromStream (SHELL32.26)
 284  *
 285  * NOTES
 286  *   the first two bytes are the len, the pidl is following then
 287  */
 288 HRESULT WINAPI ILLoadFromStream (IStream * pStream, LPITEMIDLIST * ppPidl)
 289 {
 290     WORD        wLen = 0;
 291     DWORD       dwBytesRead;
 292     HRESULT     ret = E_FAIL;
 293
 294
 295     TRACE_(shell)("%p %p\n", pStream ,  ppPidl);
 296
 297     SHFree(*ppPidl);
 298     *ppPidl = NULL;
 299
 300     IStream_AddRef (pStream);
 301
 302     if (SUCCEEDED(IStream_Read(pStream, (LPVOID)&wLen, 2, &dwBytesRead)))
 303     {
 304         TRACE("PIDL length is %d\n", wLen);
 305         if (wLen != 0)
 306         {
 307             *ppPidl = SHAlloc (wLen);
 308             if (SUCCEEDED(IStream_Read(pStream, *ppPidl , wLen, &dwBytesRead)))
 309             {
 310                 TRACE("Stream read OK\n");
 311                 ret = S_OK;
 312             }
 313             else
 314             {
 315                 WARN("reading pidl failed\n");
 316                 SHFree(*ppPidl);
 317                 *ppPidl = NULL;
 318             }
 319         }
 320         else
 321         {
 322             *ppPidl = NULL;
 323             ret = S_OK;
 324         }
 325     }
 326
 327     /* we are not yet fully compatible */
 328     if (*ppPidl && !pcheck(*ppPidl))
 329     {
 330         WARN("Check failed\n");
 331         SHFree(*ppPidl);
 332         *ppPidl = NULL;
 333     }
 334
 335     IStream_Release (pStream);
 336     TRACE("done\n");
 337     return ret;
 338 }
 339
 340 /*************************************************************************
 341  * ILSaveToStream (SHELL32.27)
 342  *
 343  * NOTES
 344  *   the first two bytes are the len, the pidl is following then
 345  */
 346 HRESULT WINAPI ILSaveToStream (IStream * pStream, LPCITEMIDLIST pPidl)
 347 {
 348     WORD        wLen = 0;
 349     HRESULT        ret = E_FAIL;
 350
 351     TRACE_(shell)("%p %p\n", pStream, pPidl);
 352
 353     IStream_AddRef (pStream);
 354
 355     wLen = ILGetSize(pPidl);
 356
 357     if (SUCCEEDED(IStream_Write(pStream, (LPVOID)&wLen, 2, NULL)))
 358     {
 359         if (SUCCEEDED(IStream_Write(pStream, pPidl, wLen, NULL)))
 360             ret = S_OK;
 361     }
 362     IStream_Release (pStream);
 363
 364     return ret;
 365 }
 366
 367 /*************************************************************************
 368  * SHILCreateFromPath        [SHELL32.28]
 369  *
 370  * Create an ItemIDList from a path
 371  *
 372  * PARAMS
 373  *  path       [I]
 374  *  ppidl      [O]
 375  *  attributes [I/O] requested attributes on call and actual attributes when
 376  *                   the function returns
 377  *
 378  * RETURNS
 379  *  NO_ERROR if successful, or an OLE errer code otherwise
 380  *
 381  * NOTES
 382  *  Wrapper for IShellFolder_ParseDisplayName().
 383  */
 384 HRESULT WINAPI SHILCreateFromPathA(LPCSTR path, LPITEMIDLIST * ppidl, DWORD * attributes)
 385 {
 386     WCHAR lpszDisplayName[MAX_PATH];
 387
 388     TRACE_(shell)("%s %p 0x%08x\n", path, ppidl, attributes ? *attributes : 0);
 389
 390     if (!MultiByteToWideChar(CP_ACP, 0, path, -1, lpszDisplayName, MAX_PATH))
 391         lpszDisplayName[MAX_PATH-1] = 0;
 392
 393     return SHILCreateFromPathW(lpszDisplayName, ppidl, attributes);
 394 }
 395
 396 HRESULT WINAPI SHILCreateFromPathW(LPCWSTR path, LPITEMIDLIST * ppidl, DWORD * attributes)
 397 {
 398     LPSHELLFOLDER sf;
 399     DWORD pchEaten;
 400     HRESULT ret = E_FAIL;
 401
 402     TRACE_(shell)("%s %p 0x%08x\n", debugstr_w(path), ppidl, attributes ? *attributes : 0);
 403
 404     if (SUCCEEDED (SHGetDesktopFolder(&sf)))
 405     {
 406         ret = IShellFolder_ParseDisplayName(sf, 0, NULL, (LPWSTR)path, &pchEaten, ppidl, attributes);
 407         IShellFolder_Release(sf);
 408     }
 409     return ret;
 410 }
 411
 412 HRESULT WINAPI SHILCreateFromPathAW (LPCVOID path, LPITEMIDLIST * ppidl, DWORD * attributes)
 413 {
 414     if ( SHELL_OsIsUnicode())
 415         return SHILCreateFromPathW (path, ppidl, attributes);
 416     return SHILCreateFromPathA (path, ppidl, attributes);
 417 }
 418
 419 /*************************************************************************
 420  * SHCloneSpecialIDList      [SHELL32.89]
 421  *
 422  * Create an ItemIDList to one of the special folders.
 423
 424  * PARAMS
 425  *  hwndOwner    [in]
 426  *  nFolder      [in]    CSIDL_xxxxx
 427  *  fCreate      [in]    Create folder if it does not exist
 428  *
 429  * RETURNS
 430  *  Success: The newly created pidl
 431  *  Failure: NULL, if inputs are invalid.
 432  *
 433  * NOTES
 434  *  exported by ordinal.
 435  *  Caller is responsible for deallocating the returned ItemIDList with the
 436  *  shells IMalloc interface, aka ILFree.
 437  */
 438 LPITEMIDLIST WINAPI SHCloneSpecialIDList(HWND hwndOwner, DWORD nFolder, BOOL fCreate)
 439 {
 440     LPITEMIDLIST ppidl;
 441     TRACE_(shell)("(hwnd=%p,csidl=0x%x,%s).\n", hwndOwner, nFolder, fCreate ? "T" : "F");
 442
 443     if (fCreate)
 444         nFolder |= CSIDL_FLAG_CREATE;
 445
 446     SHGetSpecialFolderLocation(hwndOwner, nFolder, &ppidl);
 447     return ppidl;
 448 }
 449
 450 /*************************************************************************
 451  * ILGlobalClone             [SHELL32.20]
 452  *
 453  * Clones an ItemIDList using Alloc.
 454  *
 455  * PARAMS
 456  *  pidl       [I]   ItemIDList to clone
 457  *
 458  * RETURNS
 459  *  Newly allocated ItemIDList.
 460  *
 461  * NOTES
 462  *  exported by ordinal.
 463  */
 464 LPITEMIDLIST WINAPI ILGlobalClone(LPCITEMIDLIST pidl)
 465 {
 466     DWORD    len;
 467     LPITEMIDLIST  newpidl;
 468
 469     if (!pidl)
 470         return NULL;
 471
 472     len = ILGetSize(pidl);
 473     newpidl = Alloc(len);
 474     if (newpidl)
 475         memcpy(newpidl,pidl,len);
 476
 477     TRACE("pidl=%p newpidl=%p\n",pidl, newpidl);
 478     pdump(pidl);
 479
 480     return newpidl;
 481 }
 482
 483 /*************************************************************************
 484  * ILIsEqual [SHELL32.21]
 485  *
 486  */
 487 BOOL WINAPI ILIsEqual(LPCITEMIDLIST pidl1, LPCITEMIDLIST pidl2)
 488 {
 489     char    szData1[MAX_PATH];
 490     char    szData2[MAX_PATH];
 491
 492     LPCITEMIDLIST pidltemp1 = pidl1;
 493     LPCITEMIDLIST pidltemp2 = pidl2;
 494
 495     TRACE("pidl1=%p pidl2=%p\n",pidl1, pidl2);
 496
 497     /*
 498      * Explorer reads from registry directly (StreamMRU),
 499      * so we can only check here
 500      */
 501     if (!pcheck(pidl1) || !pcheck (pidl2))
 502         return FALSE;
 503
 504     pdump (pidl1);
 505     pdump (pidl2);
 506
 507     if (!pidl1 || !pidl2)
 508         return FALSE;
 509
 510     while (pidltemp1->mkid.cb && pidltemp2->mkid.cb)
 511     {
 512         _ILSimpleGetText(pidltemp1, szData1, MAX_PATH);
 513         _ILSimpleGetText(pidltemp2, szData2, MAX_PATH);
 514
 515         if (strcasecmp( szData1, szData2 ))
 516             return FALSE;
 517
 518         pidltemp1 = ILGetNext(pidltemp1);
 519         pidltemp2 = ILGetNext(pidltemp2);
 520     }
 521
 522     if (!pidltemp1->mkid.cb && !pidltemp2->mkid.cb)
 523         return TRUE;
 524
 525     return FALSE;
 526 }
 527
 528 /*************************************************************************
 529  * ILIsParent                [SHELL32.23]
 530  *
 531  * Verifies that pidlParent is indeed the (immediate) parent of pidlChild.
 532  *
 533  * PARAMS
 534  *  pidlParent [I]
 535  *  pidlChild  [I]
 536  *  bImmediate [I]   only return true if the parent is the direct parent
 537  *                   of the child
 538  *
 539  * RETURNS
 540  *  True if the parent ItemIDlist is a complete part of the child ItemIdList,
 541  *  False otherwise.
 542  *
 543  * NOTES
 544  *  parent = a/b, child = a/b/c -> true, c is in folder a/b
 545  *  child = a/b/c/d -> false if bImmediate is true, d is not in folder a/b
 546  *  child = a/b/c/d -> true if bImmediate is false, d is in a subfolder of a/b
 547  */
 548 BOOL WINAPI ILIsParent(LPCITEMIDLIST pidlParent, LPCITEMIDLIST pidlChild, BOOL bImmediate)
 549 {
 550     char    szData1[MAX_PATH];
 551     char    szData2[MAX_PATH];
 552     LPCITEMIDLIST pParent = pidlParent;
 553     LPCITEMIDLIST pChild = pidlChild;
 554
 555     TRACE("%p %p %x\n", pidlParent, pidlChild, bImmediate);
 556
 557     if (!pParent || !pChild)
 558         return FALSE;
 559
 560     while (pParent->mkid.cb && pChild->mkid.cb)
 561     {
 562         _ILSimpleGetText(pParent, szData1, MAX_PATH);
 563         _ILSimpleGetText(pChild, szData2, MAX_PATH);
 564
 565         if (strcasecmp( szData1, szData2 ))
 566             return FALSE;
 567
 568         pParent = ILGetNext(pParent);
 569         pChild = ILGetNext(pChild);
 570     }
 571
 572     /* child shorter or has equal length to parent */
 573     if (pParent->mkid.cb || !pChild->mkid.cb)
 574         return FALSE;
 575
 576     /* not immediate descent */
 577     if ( ILGetNext(pChild)->mkid.cb && bImmediate)
 578         return FALSE;
 579
 580     return TRUE;
 581 }
 582
 583 /*************************************************************************
 584  * ILFindChild               [SHELL32.24]
 585  *
 586  *  Compares elements from pidl1 and pidl2.
 587  *
 588  * PARAMS
 589  *  pidl1      [I]
 590  *  pidl2      [I]
 591  *
 592  * RETURNS
 593  *  pidl1 is desktop      pidl2
 594  *  pidl1 shorter pidl2   pointer to first different element of pidl2
 595  *                        if there was at least one equal element
 596  *  pidl2 shorter pidl1   0
 597  *  pidl2 equal pidl1     pointer to last 0x00-element of pidl2
 598  *
 599  * NOTES
 600  *  exported by ordinal.
 601  */
 602 LPITEMIDLIST WINAPI ILFindChild(LPCITEMIDLIST pidl1, LPCITEMIDLIST pidl2)
 603 {
 604     char    szData1[MAX_PATH];
 605     char    szData2[MAX_PATH];
 606
 607     LPCITEMIDLIST pidltemp1 = pidl1;
 608     LPCITEMIDLIST pidltemp2 = pidl2;
 609     LPCITEMIDLIST ret=NULL;
 610
 611     TRACE("pidl1=%p pidl2=%p\n",pidl1, pidl2);
 612
 613     /* explorer reads from registry directly (StreamMRU),
 614        so we can only check here */
 615     if ((!pcheck (pidl1)) || (!pcheck (pidl2)))
 616         return FALSE;
 617
 618     pdump (pidl1);
 619     pdump (pidl2);
 620
 621     if (_ILIsDesktop(pidl1))
 622     {
 623         ret = pidl2;
 624     }
 625     else
 626     {
 627         while (pidltemp1->mkid.cb && pidltemp2->mkid.cb)
 628         {
 629             _ILSimpleGetText(pidltemp1, szData1, MAX_PATH);
 630             _ILSimpleGetText(pidltemp2, szData2, MAX_PATH);
 631
 632             if (strcasecmp(szData1,szData2))
 633                 break;
 634
 635             pidltemp1 = ILGetNext(pidltemp1);
 636             pidltemp2 = ILGetNext(pidltemp2);
 637             ret = pidltemp2;
 638         }
 639
 640         if (pidltemp1->mkid.cb)
 641             ret = NULL; /* elements of pidl1 left*/
 642     }
 643     TRACE_(shell)("--- %p\n", ret);
 644     return (LPITEMIDLIST)ret; /* pidl 1 is shorter */
 645 }
 646
 647 /*************************************************************************
 648  * ILCombine                 [SHELL32.25]
 649  *
 650  * Concatenates two complex ItemIDLists.
 651  *
 652  * PARAMS
 653  *  pidl1      [I]   first complex ItemIDLists
 654  *  pidl2      [I]   complex ItemIDLists to append
 655  *
 656  * RETURNS
 657  *  if both pidl's == NULL      NULL
 658  *  if pidl1 == NULL            cloned pidl2
 659  *  if pidl2 == NULL            cloned pidl1
 660  *  otherwise new pidl with pidl2 appended to pidl1
 661  *
 662  * NOTES
 663  *  exported by ordinal.
 664  *  Does not destroy the passed in ItemIDLists!
 665  */
 666 LPITEMIDLIST WINAPI ILCombine(LPCITEMIDLIST pidl1, LPCITEMIDLIST pidl2)
 667 {
 668     DWORD    len1,len2;
 669     LPITEMIDLIST  pidlNew;
 670
 671     TRACE("pidl=%p pidl=%p\n",pidl1,pidl2);
 672
 673     if (!pidl1 && !pidl2) return NULL;
 674
 675     pdump (pidl1);
 676     pdump (pidl2);
 677
 678     if (!pidl1)
 679     {
 680         pidlNew = ILClone(pidl2);
 681         return pidlNew;
 682     }
 683
 684     if (!pidl2)
 685     {
 686         pidlNew = ILClone(pidl1);
 687         return pidlNew;
 688     }
 689
 690     len1  = ILGetSize(pidl1)-2;
 691     len2  = ILGetSize(pidl2);
 692     pidlNew  = SHAlloc(len1+len2);
 693
 694     if (pidlNew)
 695     {
 696         memcpy(pidlNew,pidl1,len1);
 697         memcpy(((BYTE *)pidlNew)+len1,pidl2,len2);
 698     }
 699
 700     /*  TRACE(pidl,"--new pidl=%p\n",pidlNew);*/
 701     return pidlNew;
 702 }
 703
 704 /*************************************************************************
 705  *  SHGetRealIDL [SHELL32.98]
 706  *
 707  * NOTES
 708  */
 709 HRESULT WINAPI SHGetRealIDL(LPSHELLFOLDER lpsf, LPCITEMIDLIST pidlSimple, LPITEMIDLIST *pidlReal)
 710 {
 711     IDataObject* pDataObj;
 712     HRESULT hr;
 713
 714     hr = IShellFolder_GetUIObjectOf(lpsf, 0, 1, &pidlSimple,
 715                              &IID_IDataObject, 0, (LPVOID*)&pDataObj);
 716     if (SUCCEEDED(hr))
 717     {
 718         STGMEDIUM medium;
 719         FORMATETC fmt;
 720
 721         fmt.cfFormat = RegisterClipboardFormatW(CFSTR_SHELLIDLISTW);
 722         fmt.ptd = NULL;
 723         fmt.dwAspect = DVASPECT_CONTENT;
 724         fmt.lindex = -1;
 725         fmt.tymed = TYMED_HGLOBAL;
 726
 727         hr = IDataObject_GetData(pDataObj, &fmt, &medium);
 728
 729         IDataObject_Release(pDataObj);
 730
 731         if (SUCCEEDED(hr))
 732         {
 733             /*assert(pida->cidl==1);*/
 734             LPIDA pida = GlobalLock(medium.u.hGlobal);
 735
 736             LPCITEMIDLIST pidl_folder = (LPCITEMIDLIST) ((LPBYTE)pida+pida->aoffset[0]);
 737             LPCITEMIDLIST pidl_child = (LPCITEMIDLIST) ((LPBYTE)pida+pida->aoffset[1]);
 738
 739             *pidlReal = ILCombine(pidl_folder, pidl_child);
 740
 741             if (!*pidlReal)
 742                 hr = E_OUTOFMEMORY;
 743
 744             GlobalUnlock(medium.u.hGlobal);
 745             GlobalFree(medium.u.hGlobal);
 746         }
 747     }
 748
 749     return hr;
 750 }
 751
 752 /*************************************************************************
 753  *  SHLogILFromFSIL [SHELL32.95]
 754  *
 755  * NOTES
 756  *  pild = CSIDL_DESKTOP    ret = 0
 757  *  pild = CSIDL_DRIVES     ret = 0
 758  */
 759 LPITEMIDLIST WINAPI SHLogILFromFSIL(LPITEMIDLIST pidl)
 760 {
 761     FIXME("(pidl=%p)\n",pidl);
 762
 763     pdump(pidl);
 764
 765     return 0;
 766 }
 767
 768 /*************************************************************************
 769  * ILGetSize                 [SHELL32.152]
 770  *
 771  * Gets the byte size of an ItemIDList including zero terminator
 772  *
 773  * PARAMS
 774  *  pidl       [I]   ItemIDList
 775  *
 776  * RETURNS
 777  *  size of pidl in bytes
 778  *
 779  * NOTES
 780  *  exported by ordinal
 781  */
 782 UINT WINAPI ILGetSize(LPCITEMIDLIST pidl)
 783 {
 784     LPCSHITEMID si = &(pidl->mkid);
 785     UINT len=0;
 786
 787     if (pidl)
 788     {
 789         while (si->cb)
 790         {
 791             len += si->cb;
 792             si  = (LPCSHITEMID)(((const BYTE*)si)+si->cb);
 793         }
 794         len += 2;
 795     }
 796     TRACE("pidl=%p size=%u\n",pidl, len);
 797     return len;
 798 }
 799
 800 /*************************************************************************
 801  * ILGetNext                 [SHELL32.153]
 802  *
 803  * Gets the next ItemID of an ItemIDList
 804  *
 805  * PARAMS
 806  *  pidl       [I]   ItemIDList
 807  *
 808  * RETURNS
 809  *  null -> null
 810  *  desktop -> null
 811  *  simple pidl -> pointer to 0x0000 element
 812  *
 813  * NOTES
 814  *  exported by ordinal.
 815  */
 816 LPITEMIDLIST WINAPI ILGetNext(LPCITEMIDLIST pidl)
 817 {
 818     WORD len;
 819
 820     TRACE("%p\n", pidl);
 821
 822     if (pidl)
 823     {
 824         len =  pidl->mkid.cb;
 825         if (len)
 826         {
 827             pidl = (LPCITEMIDLIST) (((const BYTE*)pidl)+len);
 828             TRACE("-- %p\n", pidl);
 829             return (LPITEMIDLIST)pidl;
 830         }
 831     }
 832     return NULL;
 833 }
 834
 835 /*************************************************************************
 836  * ILAppend                  [SHELL32.154]
 837  *
 838  * Adds the single ItemID item to the ItemIDList indicated by pidl.
 839  * If bEnd is FALSE, inserts the item in the front of the list,
 840  * otherwise it adds the item to the end. (???)
 841  *
 842  * PARAMS
 843  *  pidl       [I]   ItemIDList to extend
 844  *  item       [I]   ItemID to prepend/append
 845  *  bEnd       [I]   Indicates if the item should be appended
 846  *
 847  * NOTES
 848  *  Destroys the passed in idlist! (???)
 849  */
 850 LPITEMIDLIST WINAPI ILAppend(LPITEMIDLIST pidl, LPCITEMIDLIST item, BOOL bEnd)
 851 {
 852     LPITEMIDLIST idlRet;
 853
 854     WARN("(pidl=%p,pidl=%p,%08u)semi-stub\n",pidl,item,bEnd);
 855
 856     pdump (pidl);
 857     pdump (item);
 858
 859     if (_ILIsDesktop(pidl))
 860     {
 861         idlRet = ILClone(item);
 862         SHFree (pidl);
 863         return idlRet;
 864     }
 865
 866     if (bEnd)
 867         idlRet = ILCombine(pidl, item);
 868     else
 869         idlRet = ILCombine(item, pidl);
 870
 871     SHFree(pidl);
 872     return idlRet;
 873 }
 874
 875 /*************************************************************************
 876  * ILFree                    [SHELL32.155]
 877  *
 878  * Frees memory (if not NULL) allocated by SHMalloc allocator
 879  *
 880  * PARAMS
 881  *  pidl         [I]
 882  *
 883  * RETURNS
 884  *  Nothing
 885  *
 886  * NOTES
 887  *  exported by ordinal
 888  */
 889 void WINAPI ILFree(LPITEMIDLIST pidl)
 890 {
 891     TRACE("(pidl=%p)\n",pidl);
 892     SHFree(pidl);
 893 }
 894
 895 /*************************************************************************
 896  * ILGlobalFree              [SHELL32.156]
 897  *
 898  * Frees memory (if not NULL) allocated by Alloc allocator
 899  *
 900  * PARAMS
 901  *  pidl         [I]
 902  *
 903  * RETURNS
 904  *  Nothing
 905  *
 906  * NOTES
 907  *  exported by ordinal.
 908  */
 909 void WINAPI ILGlobalFree( LPITEMIDLIST pidl)
 910 {
 911     TRACE("%p\n", pidl);
 912
 913     Free(pidl);
 914 }
 915
 916 /*************************************************************************
 917  * ILCreateFromPathA         [SHELL32.189]
 918  *
 919  * Creates a complex ItemIDList from a path and returns it.
 920  *
 921  * PARAMS
 922  *  path         [I]
 923  *
 924  * RETURNS
 925  *  the newly created complex ItemIDList or NULL if failed
 926  *
 927  * NOTES
 928  *  exported by ordinal.
 929  */
 930 LPITEMIDLIST WINAPI ILCreateFromPathA (LPCSTR path)
 931 {
 932     LPITEMIDLIST pidlnew = NULL;
 933
 934     TRACE_(shell)("%s\n", debugstr_a(path));
 935
 936     if (SUCCEEDED(SHILCreateFromPathA(path, &pidlnew, NULL)))
 937         return pidlnew;
 938     return NULL;
 939 }
 940
 941 /*************************************************************************
 942  * ILCreateFromPathW         [SHELL32.190]
 943  *
 944  * See ILCreateFromPathA.
 945  */
 946 LPITEMIDLIST WINAPI ILCreateFromPathW (LPCWSTR path)
 947 {
 948     LPITEMIDLIST pidlnew = NULL;
 949
 950     TRACE_(shell)("%s\n", debugstr_w(path));
 951
 952     if (SUCCEEDED(SHILCreateFromPathW(path, &pidlnew, NULL)))
 953         return pidlnew;
 954     return NULL;
 955 }
 956
 957 /*************************************************************************
 958  * ILCreateFromPath          [SHELL32.157]
 959  */
 960 LPITEMIDLIST WINAPI ILCreateFromPathAW (LPCVOID path)
 961 {
 962     if ( SHELL_OsIsUnicode())
 963         return ILCreateFromPathW (path);
 964     return ILCreateFromPathA (path);
 965 }
 966
 967 /*************************************************************************
 968  * _ILParsePathW             [internal]
 969  *
 970  * Creates an ItemIDList from a path and returns it.
 971  *
 972  * PARAMS
 973  *  path         [I]   path to parse and convert into an ItemIDList
 974  *  lpFindFile   [I]   pointer to buffer to initialize the FileSystem
 975  *                     Bind Data object with
 976  *  bBindCtx     [I]   indicates to create a BindContext and assign a
 977  *                     FileSystem Bind Data object
 978  *  ppidl        [O]   the newly create ItemIDList
 979  *  prgfInOut    [I/O] requested attributes on input and actual
 980  *                     attributes on return
 981  *
 982  * RETURNS
 983  *  NO_ERROR on success or an OLE error code
 984  *
 985  * NOTES
 986  *  If either lpFindFile is non-NULL or bBindCtx is TRUE, this function
 987  *  creates a BindContext object and assigns a FileSystem Bind Data object
 988  *  to it, passing the BindContext to IShellFolder_ParseDisplayName. Each
 989  *  IShellFolder uses that FileSystem Bind Data object of the BindContext
 990  *  to pass data about the current path element to the next object. This
 991  *  is used to avoid having to verify the current path element on disk, so
 992  *  that creating an ItemIDList from a nonexistent path still can work.
 993  */
 994 static HRESULT _ILParsePathW(LPCWSTR path, LPWIN32_FIND_DATAW lpFindFile,
 995                              BOOL bBindCtx, LPITEMIDLIST *ppidl, LPDWORD prgfInOut)
 996 {
 997     LPSHELLFOLDER pSF = NULL;
 998     LPBC pBC = NULL;
 999     HRESULT ret;
1000
1001     TRACE("%s %p %d (%p)->%p (%p)->0x%x\n", debugstr_w(path), lpFindFile, bBindCtx,
1002                                              ppidl, ppidl ? *ppidl : NULL,
1003                                              prgfInOut, prgfInOut ? *prgfInOut : 0);
1004
1005     ret = SHGetDesktopFolder(&pSF);
1006     if (FAILED(ret))
1007         return ret;
1008
1009     if (lpFindFile || bBindCtx)
1010         ret = IFileSystemBindData_Constructor(lpFindFile, &pBC);
1011
1012     if (SUCCEEDED(ret))
1013     {
1014         ret = IShellFolder_ParseDisplayName(pSF, 0, pBC, (LPOLESTR)path, NULL, ppidl, prgfInOut);
1015     }
1016
1017     if (pBC)
1018     {
1019         IBindCtx_Release(pBC);
1020         pBC = NULL;
1021     }
1022
1023     IShellFolder_Release(pSF);
1024
1025     if (FAILED(ret) && ppidl)
1026         *ppidl = NULL;
1027
1028     TRACE("%s %p 0x%x\n", debugstr_w(path), ppidl ? *ppidl : NULL, prgfInOut ? *prgfInOut : 0);
1029
1030     return ret;
1031 }
1032
1033 /*************************************************************************
1034  * SHSimpleIDListFromPath    [SHELL32.162]
1035  *
1036  * Creates a simple ItemIDList from a path and returns it. This function
1037  * does not fail on nonexistent paths.
1038  *
1039  * PARAMS
1040  *  path         [I]   path to parse and convert into an ItemIDList
1041  *
1042  * RETURNS
1043  *  the newly created simple ItemIDList
1044  *
1045  * NOTES
1046  *  Simple in the name does not mean a relative ItemIDList but rather a
1047  *  fully qualified list, where only the file name is filled in and the
1048  *  directory flag for those ItemID elements this is known about, eg.
1049  *  it is not the last element in the ItemIDList or the actual directory
1050  *  exists on disk.
1051  *  exported by ordinal.
1052  */
1053 LPITEMIDLIST WINAPI SHSimpleIDListFromPathA(LPCSTR lpszPath)
1054 {
1055     LPITEMIDLIST pidl = NULL;
1056     LPWSTR wPath = NULL;
1057     int len;
1058
1059     TRACE("%s\n", debugstr_a(lpszPath));
1060
1061     if (lpszPath)
1062     {
1063         len = MultiByteToWideChar(CP_ACP, 0, lpszPath, -1, NULL, 0);
1064         wPath = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR));
1065         MultiByteToWideChar(CP_ACP, 0, lpszPath, -1, wPath, len);
1066     }
1067
1068     _ILParsePathW(wPath, NULL, TRUE, &pidl, NULL);
1069
1070     HeapFree(GetProcessHeap(), 0, wPath);
1071     TRACE("%s %p\n", debugstr_a(lpszPath), pidl);
1072     return pidl;
1073 }
1074
1075 LPITEMIDLIST WINAPI SHSimpleIDListFromPathW(LPCWSTR lpszPath)
1076 {
1077     LPITEMIDLIST pidl = NULL;
1078
1079     TRACE("%s\n", debugstr_w(lpszPath));
1080
1081     _ILParsePathW(lpszPath, NULL, TRUE, &pidl, NULL);
1082     TRACE("%s %p\n", debugstr_w(lpszPath), pidl);
1083     return pidl;
1084 }
1085
1086 LPITEMIDLIST WINAPI SHSimpleIDListFromPathAW(LPCVOID lpszPath)
1087 {
1088     if ( SHELL_OsIsUnicode())
1089         return SHSimpleIDListFromPathW (lpszPath);
1090     return SHSimpleIDListFromPathA (lpszPath);
1091 }
1092
1093 /*************************************************************************
1094  * SHGetDataFromIDListA [SHELL32.247]
1095  *
1096  * NOTES
1097  *  the pidl can be a simple one. since we can't get the path out of the pidl
1098  *  we have to take all data from the pidl
1099  */
1100 HRESULT WINAPI SHGetDataFromIDListA(LPSHELLFOLDER psf, LPCITEMIDLIST pidl,
1101                                     int nFormat, LPVOID dest, int len)
1102 {
1103     LPSTR filename, shortname;
1104     WIN32_FIND_DATAA * pfd;
1105
1106     TRACE_(shell)("sf=%p pidl=%p 0x%04x %p 0x%04x stub\n",psf,pidl,nFormat,dest,len);
1107
1108     pdump(pidl);
1109     if (!psf || !dest)
1110         return E_INVALIDARG;
1111
1112     switch (nFormat)
1113     {
1114     case SHGDFIL_FINDDATA:
1115         pfd = dest;
1116
1117         if (_ILIsDrive(pidl) || _ILIsSpecialFolder(pidl))
1118             return E_INVALIDARG;
1119
1120         if (len < sizeof(WIN32_FIND_DATAA))
1121             return E_INVALIDARG;
1122
1123         ZeroMemory(pfd, sizeof (WIN32_FIND_DATAA));
1124         _ILGetFileDateTime( pidl, &(pfd->ftLastWriteTime));
1125         pfd->dwFileAttributes = _ILGetFileAttributes(pidl, NULL, 0);
1126         pfd->nFileSizeLow = _ILGetFileSize ( pidl, NULL, 0);
1127
1128         filename = _ILGetTextPointer(pidl);
1129         shortname = _ILGetSTextPointer(pidl);
1130
1131         if (filename)
1132             lstrcpynA(pfd->cFileName, filename, sizeof(pfd->cFileName));
1133         else
1134             pfd->cFileName[0] = '\0';
1135
1136         if (shortname)
1137             lstrcpynA(pfd->cAlternateFileName, shortname, sizeof(pfd->cAlternateFileName));
1138         else
1139             pfd->cAlternateFileName[0] = '\0';
1140         return NOERROR;
1141
1142     case SHGDFIL_NETRESOURCE:
1143     case SHGDFIL_DESCRIPTIONID:
1144         FIXME_(shell)("SHGDFIL %i stub\n", nFormat);
1145         break;
1146
1147     default:
1148         ERR_(shell)("Unknown SHGDFIL %i, please report\n", nFormat);
1149     }
1150
1151     return E_INVALIDARG;
1152 }
1153
1154 /*************************************************************************
1155  * SHGetDataFromIDListW [SHELL32.248]
1156  *
1157  */
1158 HRESULT WINAPI SHGetDataFromIDListW(LPSHELLFOLDER psf, LPCITEMIDLIST pidl,
1159                                     int nFormat, LPVOID dest, int len)
1160 {
1161     LPSTR filename, shortname;
1162     WIN32_FIND_DATAW * pfd = dest;
1163
1164     TRACE_(shell)("sf=%p pidl=%p 0x%04x %p 0x%04x stub\n",psf,pidl,nFormat,dest,len);
1165
1166     pdump(pidl);
1167
1168     if (!psf || !dest)
1169         return E_INVALIDARG;
1170
1171     switch (nFormat)
1172     {
1173     case SHGDFIL_FINDDATA:
1174         pfd = dest;
1175
1176         if (_ILIsDrive(pidl))
1177             return E_INVALIDARG;
1178
1179         if (len < sizeof(WIN32_FIND_DATAW))
1180             return E_INVALIDARG;
1181
1182         ZeroMemory(pfd, sizeof (WIN32_FIND_DATAA));
1183         _ILGetFileDateTime( pidl, &(pfd->ftLastWriteTime));
1184         pfd->dwFileAttributes = _ILGetFileAttributes(pidl, NULL, 0);
1185         pfd->nFileSizeLow = _ILGetFileSize ( pidl, NULL, 0);
1186
1187         filename = _ILGetTextPointer(pidl);
1188         shortname = _ILGetSTextPointer(pidl);
1189
1190         if (!filename)
1191             pfd->cFileName[0] = '\0';
1192         else if (!MultiByteToWideChar(CP_ACP, 0, filename, -1, pfd->cFileName, MAX_PATH))
1193             pfd->cFileName[MAX_PATH-1] = 0;
1194
1195         if (!shortname)
1196             pfd->cAlternateFileName[0] = '\0';
1197         else if (!MultiByteToWideChar(CP_ACP, 0, shortname, -1, pfd->cAlternateFileName, 14))
1198             pfd->cAlternateFileName[13] = 0;
1199         return NOERROR;
1200
1201     case SHGDFIL_NETRESOURCE:
1202     case SHGDFIL_DESCRIPTIONID:
1203         FIXME_(shell)("SHGDFIL %i stub\n", nFormat);
1204         break;
1205
1206     default:
1207         ERR_(shell)("Unknown SHGDFIL %i, please report\n", nFormat);
1208     }
1209
1210     return E_INVALIDARG;
1211 }
1212
1213 /*************************************************************************
1214  * SHGetPathFromIDListA        [SHELL32.@][NT 4.0: SHELL32.220]
1215  *
1216  * PARAMETERS
1217  *  pidl,   [IN] pidl
1218  *  pszPath [OUT] path
1219  *
1220  * RETURNS
1221  *  path from a passed PIDL.
1222  *
1223  * NOTES
1224  *    NULL returns FALSE
1225  *    desktop pidl gives path to desktop directory back
1226  *    special pidls returning FALSE
1227  */
1228 BOOL WINAPI SHGetPathFromIDListA(LPCITEMIDLIST pidl, LPSTR pszPath)
1229 {
1230     WCHAR wszPath[MAX_PATH];
1231     BOOL bSuccess;
1232
1233     bSuccess = SHGetPathFromIDListW(pidl, wszPath);
1234     WideCharToMultiByte(CP_ACP, 0, wszPath, -1, pszPath, MAX_PATH, NULL, NULL);
1235
1236     return bSuccess;
1237 }
1238
1239 /*************************************************************************
1240  * SHGetPathFromIDListW             [SHELL32.@]
1241  *
1242  * See SHGetPathFromIDListA.
1243  */
1244 BOOL WINAPI SHGetPathFromIDListW(LPCITEMIDLIST pidl, LPWSTR pszPath)
1245 {
1246     HRESULT hr;
1247     LPCITEMIDLIST pidlLast;
1248     LPSHELLFOLDER psfFolder;
1249     DWORD dwAttributes;
1250     STRRET strret;
1251
1252     TRACE_(shell)("(pidl=%p,%p)\n", pidl, pszPath);
1253     pdump(pidl);
1254
1255     *pszPath = '\0';
1256     if (!pidl)
1257         return FALSE;
1258
1259     hr = SHBindToParent(pidl, &IID_IShellFolder, (VOID**)&psfFolder, &pidlLast);
1260     if (FAILED(hr)) return FALSE;
1261
1262     dwAttributes = SFGAO_FILESYSTEM;
1263     hr = IShellFolder_GetAttributesOf(psfFolder, 1, &pidlLast, &dwAttributes);
1264     if (FAILED(hr) || !(dwAttributes & SFGAO_FILESYSTEM)) {
1265         IShellFolder_Release(psfFolder);
1266         return FALSE;
1267     }
1268
1269     hr = IShellFolder_GetDisplayNameOf(psfFolder, pidlLast, SHGDN_FORPARSING, &strret);
1270     IShellFolder_Release(psfFolder);
1271     if (FAILED(hr)) return FALSE;
1272
1273     hr = StrRetToBufW(&strret, pidlLast, pszPath, MAX_PATH);
1274
1275     TRACE_(shell)("-- %s, 0x%08x\n",debugstr_w(pszPath), hr);
1276     return SUCCEEDED(hr);
1277 }
1278
1279 /*************************************************************************
1280  *    SHBindToParent        [shell version 5.0]
1281  */
1282 HRESULT WINAPI SHBindToParent(LPCITEMIDLIST pidl, REFIID riid, LPVOID *ppv, LPCITEMIDLIST *ppidlLast)
1283 {
1284     IShellFolder    * psfDesktop;
1285     HRESULT         hr=E_FAIL;
1286
1287     TRACE_(shell)("pidl=%p\n", pidl);
1288     pdump(pidl);
1289
1290     if (!pidl || !ppv)
1291         return E_INVALIDARG;
1292
1293     *ppv = NULL;
1294     if (ppidlLast)
1295         *ppidlLast = NULL;
1296
1297     hr = SHGetDesktopFolder(&psfDesktop);
1298     if (FAILED(hr))
1299         return hr;
1300
1301     if (_ILIsPidlSimple(pidl))
1302     {
1303         /* we are on desktop level */
1304         hr = IShellFolder_QueryInterface(psfDesktop, riid, ppv);
1305     }
1306     else
1307     {
1308         LPITEMIDLIST pidlParent = ILClone(pidl);
1309         ILRemoveLastID(pidlParent);
1310         hr = IShellFolder_BindToObject(psfDesktop, pidlParent, NULL, riid, ppv);
1311         SHFree (pidlParent);
1312     }
1313
1314     IShellFolder_Release(psfDesktop);
1315
1316     if (SUCCEEDED(hr) && ppidlLast)
1317         *ppidlLast = ILFindLastID(pidl);
1318
1319     TRACE_(shell)("-- psf=%p pidl=%p ret=0x%08x\n", *ppv, (ppidlLast)?*ppidlLast:NULL, hr);
1320     return hr;
1321 }
1322
1323 /**************************************************************************
1324  *
1325  *        internal functions
1326  *
1327  *    ### 1. section creating pidls ###
1328  *
1329  *************************************************************************
1330  */
1331
1332 /* Basic PIDL constructor.  Allocates size + 5 bytes, where:
1333  * - two bytes are SHITEMID.cb
1334  * - one byte is PIDLDATA.type
1335  * - two bytes are the NULL PIDL terminator
1336  * Sets type of the returned PIDL to type.
1337  */
1338 static LPITEMIDLIST _ILAlloc(PIDLTYPE type, unsigned int size)
1339 {
1340     LPITEMIDLIST pidlOut = NULL;
1341
1342     pidlOut = SHAlloc(size + 5);
1343     if(pidlOut)
1344     {
1345         LPPIDLDATA pData;
1346         LPITEMIDLIST pidlNext;
1347
1348         ZeroMemory(pidlOut, size + 5);
1349         pidlOut->mkid.cb = size + 3;
1350
1351         pData = _ILGetDataPointer(pidlOut);
1352         if (pData)
1353             pData->type = type;
1354
1355         pidlNext = ILGetNext(pidlOut);
1356         if (pidlNext)
1357             pidlNext->mkid.cb = 0x00;
1358         TRACE("-- (pidl=%p, size=%u)\n", pidlOut, size);
1359     }
1360
1361     return pidlOut;
1362 }
1363
1364 LPITEMIDLIST _ILCreateDesktop(void)
1365 {
1366     LPITEMIDLIST ret;
1367
1368     TRACE("()\n");
1369     ret = SHAlloc(2);
1370     if (ret)
1371         ret->mkid.cb = 0;
1372     return ret;
1373 }
1374
1375 LPITEMIDLIST _ILCreateMyComputer(void)
1376 {
1377     TRACE("()\n");
1378     return _ILCreateGuid(PT_GUID, &CLSID_MyComputer);
1379 }
1380
1381 LPITEMIDLIST _ILCreateMyDocuments(void)
1382 {
1383     TRACE("()\n");
1384     return _ILCreateGuid(PT_GUID, &CLSID_MyDocuments);
1385 }
1386
1387 LPITEMIDLIST _ILCreateIExplore(void)
1388 {
1389     TRACE("()\n");
1390     return _ILCreateGuid(PT_GUID, &CLSID_Internet);
1391 }
1392
1393 LPITEMIDLIST _ILCreateControlPanel(void)
1394 {
1395     LPITEMIDLIST parent = _ILCreateGuid(PT_GUID, &CLSID_MyComputer), ret = NULL;
1396
1397     TRACE("()\n");
1398     if (parent)
1399     {
1400         LPITEMIDLIST cpl = _ILCreateGuid(PT_SHELLEXT, &CLSID_ControlPanel);
1401
1402         if (cpl)
1403         {
1404             ret = ILCombine(parent, cpl);
1405             SHFree(cpl);
1406         }
1407         SHFree(parent);
1408     }
1409     return ret;
1410 }
1411
1412 LPITEMIDLIST _ILCreatePrinters(void)
1413 {
1414     LPITEMIDLIST parent = _ILCreateGuid(PT_GUID, &CLSID_MyComputer), ret = NULL;
1415
1416     TRACE("()\n");
1417     if (parent)
1418     {
1419         LPITEMIDLIST printers = _ILCreateGuid(PT_YAGUID, &CLSID_Printers);
1420
1421         if (printers)
1422         {
1423             ret = ILCombine(parent, printers);
1424             SHFree(printers);
1425         }
1426         SHFree(parent);
1427     }
1428     return ret;
1429 }
1430
1431 LPITEMIDLIST _ILCreateNetwork(void)
1432 {
1433     TRACE("()\n");
1434     return _ILCreateGuid(PT_GUID, &CLSID_NetworkPlaces);
1435 }
1436
1437 LPITEMIDLIST _ILCreateBitBucket(void)
1438 {
1439     TRACE("()\n");
1440     return _ILCreateGuid(PT_GUID, &CLSID_RecycleBin);
1441 }
1442
1443 LPITEMIDLIST _ILCreateNetHood(void)
1444 {
1445     TRACE("()\n");
1446     return _ILCreateGuid(PT_GUID, &CLSID_NetworkPlaces);
1447 }
1448
1449 LPITEMIDLIST _ILCreateGuid(PIDLTYPE type, REFIID guid)
1450 {
1451     LPITEMIDLIST pidlOut;
1452
1453     if (type == PT_SHELLEXT || type == PT_GUID || type == PT_YAGUID)
1454     {
1455         pidlOut = _ILAlloc(type, sizeof(GUIDStruct));
1456         if (pidlOut)
1457         {
1458             LPPIDLDATA pData = _ILGetDataPointer(pidlOut);
1459
1460             pData->u.guid.guid = *guid;
1461             TRACE("-- create GUID-pidl %s\n",
1462                   debugstr_guid(&(pData->u.guid.guid)));
1463         }
1464     }
1465     else
1466     {
1467         WARN("%d: invalid type for GUID\n", type);
1468         pidlOut = NULL;
1469     }
1470     return pidlOut;
1471 }
1472
1473 LPITEMIDLIST _ILCreateGuidFromStrA(LPCSTR szGUID)
1474 {
1475     IID iid;
1476
1477     if (FAILED(SHCLSIDFromStringA(szGUID, &iid)))
1478     {
1479         ERR("%s is not a GUID\n", szGUID);
1480         return NULL;
1481     }
1482     return _ILCreateGuid(PT_GUID, &iid);
1483 }
1484
1485 LPITEMIDLIST _ILCreateGuidFromStrW(LPCWSTR szGUID)
1486 {
1487     IID iid;
1488
1489     if (FAILED(SHCLSIDFromStringW(szGUID, &iid)))
1490     {
1491         ERR("%s is not a GUID\n", debugstr_w(szGUID));
1492         return NULL;
1493     }
1494     return _ILCreateGuid(PT_GUID, &iid);
1495 }
1496
1497 LPITEMIDLIST _ILCreateFromFindDataW( const WIN32_FIND_DATAW *wfd )
1498 {
1499     char    buff[MAX_PATH + 14 +1]; /* see WIN32_FIND_DATA */
1500     DWORD   len, len1, wlen, alen;
1501     LPITEMIDLIST pidl;
1502     PIDLTYPE type;
1503
1504     if (!wfd)
1505         return NULL;
1506
1507     TRACE("(%s, %s)\n",debugstr_w(wfd->cAlternateFileName), debugstr_w(wfd->cFileName));
1508
1509     /* prepare buffer with both names */
1510     len = WideCharToMultiByte(CP_ACP,0,wfd->cFileName,-1,buff,MAX_PATH,NULL,NULL);
1511     len1 = WideCharToMultiByte(CP_ACP,0,wfd->cAlternateFileName,-1, buff+len, sizeof(buff)-len, NULL, NULL);
1512     alen = len + len1;
1513
1514     type = (wfd->dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) ? PT_FOLDER : PT_VALUE;
1515
1516     wlen = lstrlenW(wfd->cFileName) + 1;
1517     pidl = _ILAlloc(type, FIELD_OFFSET(FileStruct, szNames[alen + (alen & 1)]) +
1518                     FIELD_OFFSET(FileStructW, wszName[wlen]) + sizeof(WORD));
1519     if (pidl)
1520     {
1521         LPPIDLDATA pData = _ILGetDataPointer(pidl);
1522         FileStruct *fs = &pData->u.file;
1523         FileStructW *fsw;
1524         WORD *pOffsetW;
1525
1526         FileTimeToDosDateTime( &wfd->ftLastWriteTime, &fs->uFileDate, &fs->uFileTime);
1527         fs->dwFileSize = wfd->nFileSizeLow;
1528         fs->uFileAttribs = wfd->dwFileAttributes;
1529         memcpy(fs->szNames, buff, alen);
1530
1531         fsw = (FileStructW*)(pData->u.file.szNames + alen + (alen & 0x1));
1532         fsw->cbLen = FIELD_OFFSET(FileStructW, wszName[wlen]) + sizeof(WORD);
1533         FileTimeToDosDateTime( &wfd->ftCreationTime, &fsw->uCreationDate, &fsw->uCreationTime);
1534         FileTimeToDosDateTime( &wfd->ftLastAccessTime, &fsw->uLastAccessDate, &fsw->uLastAccessTime);
1535         memcpy(fsw->wszName, wfd->cFileName, wlen * sizeof(WCHAR));
1536
1537         pOffsetW = (WORD*)((LPBYTE)pidl + pidl->mkid.cb - sizeof(WORD));
1538         *pOffsetW = (LPBYTE)fsw - (LPBYTE)pidl;
1539         TRACE("-- Set Value: %s\n",debugstr_w(fsw->wszName));
1540     }
1541     return pidl;
1542
1543 }
1544
1545 HRESULT _ILCreateFromPathW(LPCWSTR szPath, LPITEMIDLIST* ppidl)
1546 {
1547     HANDLE hFile;
1548     WIN32_FIND_DATAW stffile;
1549
1550     if (!ppidl)
1551         return E_INVALIDARG;
1552
1553     hFile = FindFirstFileW(szPath, &stffile);
1554     if (hFile == INVALID_HANDLE_VALUE)
1555         return HRESULT_FROM_WIN32(ERROR_FILE_NOT_FOUND);
1556
1557     FindClose(hFile);
1558
1559     *ppidl = _ILCreateFromFindDataW(&stffile);
1560
1561     return *ppidl ? S_OK : E_OUTOFMEMORY;
1562 }
1563
1564 LPITEMIDLIST _ILCreateDrive(LPCWSTR lpszNew)
1565 {
1566     LPITEMIDLIST pidlOut;
1567
1568     TRACE("(%s)\n",debugstr_w(lpszNew));
1569
1570     pidlOut = _ILAlloc(PT_DRIVE, sizeof(DriveStruct));
1571     if (pidlOut)
1572     {
1573         LPSTR pszDest;
1574
1575         pszDest = _ILGetTextPointer(pidlOut);
1576         if (pszDest)
1577         {
1578             strcpy(pszDest, "x:\\");
1579             pszDest[0]=toupperW(lpszNew[0]);
1580             TRACE("-- create Drive: %s\n", debugstr_a(pszDest));
1581         }
1582     }
1583     return pidlOut;
1584 }
1585
1586 LPITEMIDLIST _ILCreateEntireNetwork(void)
1587 {
1588     LPITEMIDLIST pidlOut;
1589
1590     TRACE("\n");
1591
1592     pidlOut = _ILAlloc(PT_NETWORK, FIELD_OFFSET(PIDLDATA, u.network.szNames[sizeof("Entire Network")]));
1593     if (pidlOut)
1594     {
1595         LPPIDLDATA pData = _ILGetDataPointer(pidlOut);
1596
1597         pData->u.network.dummy = 0;
1598         strcpy(pData->u.network.szNames, "Entire Network");
1599     }
1600     return pidlOut;
1601 }
1602
1603 /**************************************************************************
1604  *  _ILGetDrive()
1605  *
1606  *  Gets the text for the drive eg. 'c:\'
1607  *
1608  * RETURNS
1609  *  strlen (lpszText)
1610  */
1611 DWORD _ILGetDrive(LPCITEMIDLIST pidl,LPSTR pOut, UINT uSize)
1612 {
1613     TRACE("(%p,%p,%u)\n",pidl,pOut,uSize);
1614
1615     if(_ILIsMyComputer(pidl))
1616         pidl = ILGetNext(pidl);
1617
1618     if (pidl && _ILIsDrive(pidl))
1619         return _ILSimpleGetText(pidl, pOut, uSize);
1620
1621     return 0;
1622 }
1623
1624 /**************************************************************************
1625  *
1626  *    ### 2. section testing pidls ###
1627  *
1628  **************************************************************************
1629  *  _ILIsUnicode()
1630  *  _ILIsDesktop()
1631  *  _ILIsMyComputer()
1632  *  _ILIsSpecialFolder()
1633  *  _ILIsDrive()
1634  *  _ILIsFolder()
1635  *  _ILIsValue()
1636  *  _ILIsPidlSimple()
1637  */
1638 BOOL _ILIsUnicode(LPCITEMIDLIST pidl)
1639 {
1640     LPPIDLDATA lpPData = _ILGetDataPointer(pidl);
1641
1642     TRACE("(%p)\n",pidl);
1643
1644     return (pidl && lpPData && PT_VALUEW == lpPData->type);
1645 }
1646
1647 BOOL _ILIsDesktop(LPCITEMIDLIST pidl)
1648 {
1649     TRACE("(%p)\n",pidl);
1650
1651     return pidl && pidl->mkid.cb  ? 0 : 1;
1652 }
1653
1654 BOOL _ILIsMyComputer(LPCITEMIDLIST pidl)
1655 {
1656     REFIID iid = _ILGetGUIDPointer(pidl);
1657
1658     TRACE("(%p)\n",pidl);
1659
1660     if (iid)
1661         return IsEqualIID(iid, &CLSID_MyComputer);
1662     return FALSE;
1663 }
1664
1665 BOOL _ILIsSpecialFolder (LPCITEMIDLIST pidl)
1666 {
1667     LPPIDLDATA lpPData = _ILGetDataPointer(pidl);
1668
1669     TRACE("(%p)\n",pidl);
1670
1671     return (pidl && ( (lpPData && (PT_GUID== lpPData->type || PT_SHELLEXT== lpPData->type || PT_YAGUID == lpPData->type)) ||
1672               (pidl && pidl->mkid.cb == 0x00)
1673             ));
1674 }
1675
1676 BOOL _ILIsDrive(LPCITEMIDLIST pidl)
1677 {
1678     LPPIDLDATA lpPData = _ILGetDataPointer(pidl);
1679
1680     TRACE("(%p)\n",pidl);
1681
1682     return (pidl && lpPData && (PT_DRIVE == lpPData->type ||
1683                     PT_DRIVE1 == lpPData->type ||
1684                     PT_DRIVE2 == lpPData->type ||
1685                     PT_DRIVE3 == lpPData->type));
1686 }
1687
1688 BOOL _ILIsFolder(LPCITEMIDLIST pidl)
1689 {
1690     LPPIDLDATA lpPData = _ILGetDataPointer(pidl);
1691
1692     TRACE("(%p)\n",pidl);
1693
1694     return (pidl && lpPData && (PT_FOLDER == lpPData->type || PT_FOLDER1 == lpPData->type));
1695 }
1696
1697 BOOL _ILIsValue(LPCITEMIDLIST pidl)
1698 {
1699     LPPIDLDATA lpPData = _ILGetDataPointer(pidl);
1700
1701     TRACE("(%p)\n",pidl);
1702
1703     return (pidl && lpPData && PT_VALUE == lpPData->type);
1704 }
1705
1706 BOOL _ILIsCPanelStruct(LPCITEMIDLIST pidl)
1707 {
1708     LPPIDLDATA lpPData = _ILGetDataPointer(pidl);
1709
1710     TRACE("(%p)\n",pidl);
1711
1712     return (pidl && lpPData && (lpPData->type == 0));
1713 }
1714
1715 /**************************************************************************
1716  *    _ILIsPidlSimple
1717  */
1718 BOOL _ILIsPidlSimple(LPCITEMIDLIST pidl)
1719 {
1720     BOOL ret = TRUE;
1721
1722     if(! _ILIsDesktop(pidl))    /* pidl=NULL or mkid.cb=0 */
1723     {
1724         WORD len = pidl->mkid.cb;
1725         LPCITEMIDLIST pidlnext = (LPCITEMIDLIST) (((const BYTE*)pidl) + len );
1726
1727         if (pidlnext->mkid.cb)
1728             ret = FALSE;
1729     }
1730
1731     TRACE("%s\n", ret ? "Yes" : "No");
1732     return ret;
1733 }
1734
1735 /**************************************************************************
1736  *
1737  *    ### 3. section getting values from pidls ###
1738  */
1739
1740  /**************************************************************************
1741  *  _ILSimpleGetText
1742  *
1743  * gets the text for the first item in the pidl (eg. simple pidl)
1744  *
1745  * returns the length of the string
1746  */
1747 DWORD _ILSimpleGetText (LPCITEMIDLIST pidl, LPSTR szOut, UINT uOutSize)
1748 {
1749     DWORD        dwReturn=0;
1750     LPSTR        szSrc;
1751     LPWSTR       szSrcW;
1752     GUID const * riid;
1753     char szTemp[MAX_PATH];
1754
1755     TRACE("(%p %p %x)\n",pidl,szOut,uOutSize);
1756
1757     if (!pidl)
1758         return 0;
1759
1760     if (szOut)
1761         *szOut = 0;
1762
1763     if (_ILIsDesktop(pidl))
1764     {
1765         /* desktop */
1766         if (HCR_GetClassNameA(&CLSID_ShellDesktop, szTemp, MAX_PATH))
1767         {
1768             if (szOut)
1769                 lstrcpynA(szOut, szTemp, uOutSize);
1770
1771             dwReturn = strlen (szTemp);
1772         }
1773     }
1774     else if (( szSrc = _ILGetTextPointer(pidl) ))
1775     {
1776         /* filesystem */
1777         if (szOut)
1778             lstrcpynA(szOut, szSrc, uOutSize);
1779
1780         dwReturn = strlen(szSrc);
1781     }
1782     else if (( szSrcW = _ILGetTextPointerW(pidl) ))
1783     {
1784         /* unicode filesystem */
1785         WideCharToMultiByte(CP_ACP,0,szSrcW, -1, szTemp, MAX_PATH, NULL, NULL);
1786
1787         if (szOut)
1788             lstrcpynA(szOut, szTemp, uOutSize);
1789
1790         dwReturn = strlen (szTemp);
1791     }
1792     else if (( riid = _ILGetGUIDPointer(pidl) ))
1793     {
1794         /* special folder */
1795         if ( HCR_GetClassNameA(riid, szTemp, MAX_PATH) )
1796         {
1797             if (szOut)
1798                 lstrcpynA(szOut, szTemp, uOutSize);
1799
1800             dwReturn = strlen (szTemp);
1801         }
1802     }
1803     else
1804     {
1805         ERR("-- no text\n");
1806     }
1807
1808     TRACE("-- (%p=%s 0x%08x)\n",szOut,debugstr_a(szOut),dwReturn);
1809     return dwReturn;
1810 }
1811
1812  /**************************************************************************
1813  *  _ILSimpleGetTextW
1814  *
1815  * gets the text for the first item in the pidl (eg. simple pidl)
1816  *
1817  * returns the length of the string
1818  */
1819 DWORD _ILSimpleGetTextW (LPCITEMIDLIST pidl, LPWSTR szOut, UINT uOutSize)
1820 {
1821     DWORD   dwReturn;
1822     FileStructW *pFileStructW = _ILGetFileStructW(pidl);
1823
1824     TRACE("(%p %p %x)\n",pidl,szOut,uOutSize);
1825
1826     if (pFileStructW) {
1827         lstrcpynW(szOut, pFileStructW->wszName, uOutSize);
1828         dwReturn = lstrlenW(pFileStructW->wszName);
1829     } else {
1830         GUID const * riid;
1831         WCHAR szTemp[MAX_PATH];
1832         LPSTR szSrc;
1833         LPWSTR szSrcW;
1834         dwReturn=0;
1835
1836         if (!pidl)
1837             return 0;
1838
1839         if (szOut)
1840             *szOut = 0;
1841
1842         if (_ILIsDesktop(pidl))
1843         {
1844             /* desktop */
1845             if (HCR_GetClassNameW(&CLSID_ShellDesktop, szTemp, MAX_PATH))
1846             {
1847                 if (szOut)
1848                     lstrcpynW(szOut, szTemp, uOutSize);
1849
1850                 dwReturn = lstrlenW (szTemp);
1851             }
1852         }
1853         else if (( szSrcW = _ILGetTextPointerW(pidl) ))
1854         {
1855             /* unicode filesystem */
1856             if (szOut)
1857                 lstrcpynW(szOut, szSrcW, uOutSize);
1858
1859             dwReturn = lstrlenW(szSrcW);
1860         }
1861         else if (( szSrc = _ILGetTextPointer(pidl) ))
1862         {
1863             /* filesystem */
1864             MultiByteToWideChar(CP_ACP, 0, szSrc, -1, szTemp, MAX_PATH);
1865
1866             if (szOut)
1867                 lstrcpynW(szOut, szTemp, uOutSize);
1868
1869             dwReturn = lstrlenW (szTemp);
1870         }
1871         else if (( riid = _ILGetGUIDPointer(pidl) ))
1872         {
1873             /* special folder */
1874             if ( HCR_GetClassNameW(riid, szTemp, MAX_PATH) )
1875             {
1876                 if (szOut)
1877                     lstrcpynW(szOut, szTemp, uOutSize);
1878
1879                 dwReturn = lstrlenW (szTemp);
1880             }
1881         }
1882         else
1883         {
1884             ERR("-- no text\n");
1885         }
1886     }
1887
1888     TRACE("-- (%p=%s 0x%08x)\n",szOut,debugstr_w(szOut),dwReturn);
1889     return dwReturn;
1890 }
1891
1892 /**************************************************************************
1893  *
1894  *    ### 4. getting pointers to parts of pidls ###
1895  *
1896  **************************************************************************
1897  *  _ILGetDataPointer()
1898  */
1899 LPPIDLDATA _ILGetDataPointer(LPCITEMIDLIST pidl)
1900 {
1901     if(pidl && pidl->mkid.cb != 0x00)
1902         return (LPPIDLDATA)pidl->mkid.abID;
1903     return NULL;
1904 }
1905
1906 /**************************************************************************
1907  *  _ILGetTextPointerW()
1908  * gets a pointer to the unicode long filename string stored in the pidl
1909  */
1910 static LPWSTR _ILGetTextPointerW(LPCITEMIDLIST pidl)
1911 {
1912     /* TRACE(pidl,"(pidl%p)\n", pidl);*/
1913
1914     LPPIDLDATA pdata = _ILGetDataPointer(pidl);
1915
1916     if (!pdata)
1917         return NULL;
1918
1919     switch (pdata->type)
1920     {
1921     case PT_GUID:
1922     case PT_SHELLEXT:
1923     case PT_YAGUID:
1924         return NULL;
1925
1926     case PT_DRIVE:
1927     case PT_DRIVE1:
1928     case PT_DRIVE2:
1929     case PT_DRIVE3:
1930         /*return (LPSTR)&(pdata->u.drive.szDriveName);*/
1931         return NULL;
1932
1933     case PT_FOLDER:
1934     case PT_FOLDER1:
1935     case PT_VALUE:
1936     case PT_IESPECIAL1:
1937     case PT_IESPECIAL2:
1938         /*return (LPSTR)&(pdata->u.file.szNames);*/
1939         return NULL;
1940
1941     case PT_WORKGRP:
1942     case PT_COMP:
1943     case PT_NETWORK:
1944     case PT_NETPROVIDER:
1945     case PT_SHARE:
1946         /*return (LPSTR)&(pdata->u.network.szNames);*/
1947         return NULL;
1948
1949     case PT_VALUEW:
1950         return (LPWSTR)pdata->u.file.szNames;
1951     }
1952     return NULL;
1953 }
1954
1955
1956 /**************************************************************************
1957  *  _ILGetTextPointer()
1958  * gets a pointer to the long filename string stored in the pidl
1959  */
1960 LPSTR _ILGetTextPointer(LPCITEMIDLIST pidl)
1961 {
1962     /* TRACE(pidl,"(pidl%p)\n", pidl);*/
1963
1964     LPPIDLDATA pdata = _ILGetDataPointer(pidl);
1965
1966     if (!pdata)
1967         return NULL;
1968
1969     switch (pdata->type)
1970     {
1971     case PT_GUID:
1972     case PT_SHELLEXT:
1973     case PT_YAGUID:
1974         return NULL;
1975
1976     case PT_DRIVE:
1977     case PT_DRIVE1:
1978     case PT_DRIVE2:
1979     case PT_DRIVE3:
1980         return (LPSTR)pdata->u.drive.szDriveName;
1981
1982     case PT_FOLDER:
1983     case PT_FOLDER1:
1984     case PT_VALUE:
1985     case PT_IESPECIAL1:
1986     case PT_IESPECIAL2:
1987         return (LPSTR)pdata->u.file.szNames;
1988
1989     case PT_WORKGRP:
1990     case PT_COMP:
1991     case PT_NETWORK:
1992     case PT_NETPROVIDER:
1993     case PT_SHARE:
1994         return (LPSTR)pdata->u.network.szNames;
1995     }
1996     return NULL;
1997 }
1998
1999 /**************************************************************************
2000  *  _ILGetSTextPointer()
2001  * gets a pointer to the short filename string stored in the pidl
2002  */
2003 static LPSTR _ILGetSTextPointer(LPCITEMIDLIST pidl)
2004 {
2005     /* TRACE(pidl,"(pidl%p)\n", pidl); */
2006
2007     LPPIDLDATA pdata =_ILGetDataPointer(pidl);
2008
2009     if (!pdata)
2010         return NULL;
2011
2012     switch (pdata->type)
2013     {
2014     case PT_FOLDER:
2015     case PT_VALUE:
2016     case PT_IESPECIAL1:
2017     case PT_IESPECIAL2:
2018         return (LPSTR)(pdata->u.file.szNames + strlen (pdata->u.file.szNames) + 1);
2019
2020     case PT_WORKGRP:
2021         return (LPSTR)(pdata->u.network.szNames + strlen (pdata->u.network.szNames) + 1);
2022     }
2023     return NULL;
2024 }
2025
2026 /**************************************************************************
2027  * _ILGetGUIDPointer()
2028  *
2029  * returns reference to guid stored in some pidls
2030  */
2031 IID* _ILGetGUIDPointer(LPCITEMIDLIST pidl)
2032 {
2033     LPPIDLDATA pdata =_ILGetDataPointer(pidl);
2034
2035     TRACE("%p\n", pidl);
2036
2037     if (!pdata)
2038         return NULL;
2039
2040     TRACE("pdata->type 0x%04x\n", pdata->type);
2041     switch (pdata->type)
2042     {
2043     case PT_SHELLEXT:
2044     case PT_GUID:
2045     case PT_YAGUID:
2046         return &(pdata->u.guid.guid);
2047
2048     default:
2049         TRACE("Unknown pidl type 0x%04x\n", pdata->type);
2050         break;
2051     }
2052     return NULL;
2053 }
2054
2055 /******************************************************************************
2056  * _ILGetFileStructW [Internal]
2057  *
2058  * Get pointer the a SHITEMID's FileStructW field if present
2059  *
2060  * PARAMS
2061  *  pidl [I] The SHITEMID
2062  *
2063  * RETURNS
2064  *  Success: Pointer to pidl's FileStructW field.
2065  *  Failure: NULL
2066  */
2067 FileStructW* _ILGetFileStructW(LPCITEMIDLIST pidl) {
2068     FileStructW *pFileStructW;
2069     WORD cbOffset;
2070
2071     if (!(_ILIsValue(pidl) || _ILIsFolder(pidl)))
2072         return NULL;
2073
2074     cbOffset = *(const WORD *)((const BYTE *)pidl + pidl->mkid.cb - sizeof(WORD));
2075     pFileStructW = (FileStructW*)((LPBYTE)pidl + cbOffset);
2076
2077     /* Currently I don't see a fool prove way to figure out if a pidl is for sure of WinXP
2078      * style with a FileStructW member. If we switch all our shellfolder-implementations to
2079      * the new format, this won't be a problem. For now, we do as many sanity checks as possible. */
2080     if (cbOffset & 0x1 || /* FileStructW member is word aligned in the pidl */
2081         /* FileStructW is positioned after FileStruct */
2082         cbOffset < sizeof(pidl->mkid.cb) + sizeof(PIDLTYPE) + sizeof(FileStruct) ||
2083         /* There has to be enough space at cbOffset in the pidl to hold FileStructW and cbOffset */
2084         cbOffset > pidl->mkid.cb - sizeof(cbOffset) - sizeof(FileStructW) ||
2085         pidl->mkid.cb != cbOffset + pFileStructW->cbLen)
2086     {
2087         WARN("Invalid pidl format (cbOffset = %d)!\n", cbOffset);
2088         return NULL;
2089     }
2090
2091     return pFileStructW;
2092 }
2093
2094 /*************************************************************************
2095  * _ILGetFileDateTime
2096  *
2097  * Given the ItemIdList, get the FileTime
2098  *
2099  * PARAMS
2100  *      pidl        [I] The ItemIDList
2101  *      pFt         [I] the resulted FILETIME of the file
2102  *
2103  * RETURNS
2104  *     True if Successful
2105  *
2106  * NOTES
2107  *
2108  */
2109 BOOL _ILGetFileDateTime(LPCITEMIDLIST pidl, FILETIME *pFt)
2110 {
2111     LPPIDLDATA pdata = _ILGetDataPointer(pidl);
2112
2113     if (!pdata)
2114         return FALSE;
2115
2116     switch (pdata->type)
2117     {
2118     case PT_FOLDER:
2119     case PT_VALUE:
2120         DosDateTimeToFileTime(pdata->u.file.uFileDate, pdata->u.file.uFileTime, pFt);
2121         break;
2122     default:
2123         return FALSE;
2124     }
2125     return TRUE;
2126 }
2127
2128 BOOL _ILGetFileDate (LPCITEMIDLIST pidl, LPSTR pOut, UINT uOutSize)
2129 {
2130     FILETIME ft,lft;
2131     SYSTEMTIME time;
2132     BOOL ret;
2133
2134     if (_ILGetFileDateTime( pidl, &ft ))
2135     {
2136         FileTimeToLocalFileTime(&ft, &lft);
2137         FileTimeToSystemTime (&lft, &time);
2138
2139         ret = GetDateFormatA(LOCALE_USER_DEFAULT,DATE_SHORTDATE,&time, NULL,  pOut, uOutSize);
2140         if (ret)
2141         {
2142             /* Append space + time without seconds */
2143             pOut[ret-1] = ' ';
2144             GetTimeFormatA(LOCALE_USER_DEFAULT, TIME_NOSECONDS, &time, NULL, &pOut[ret], uOutSize - ret);
2145         }
2146     }
2147     else
2148     {
2149         pOut[0] = '\0';
2150         ret = FALSE;
2151     }
2152     return ret;
2153 }
2154
2155 /*************************************************************************
2156  * _ILGetFileSize
2157  *
2158  * Given the ItemIdList, get the FileSize
2159  *
2160  * PARAMS
2161  *    pidl     [I] The ItemIDList
2162  *    pOut     [I] The buffer to save the result
2163  *    uOutsize [I] The size of the buffer
2164  *
2165  * RETURNS
2166  *    The FileSize
2167  *
2168  * NOTES
2169  *    pOut can be null when no string is needed
2170  *
2171  */
2172 DWORD _ILGetFileSize (LPCITEMIDLIST pidl, LPSTR pOut, UINT uOutSize)
2173 {
2174     LPPIDLDATA pdata = _ILGetDataPointer(pidl);
2175     DWORD dwSize;
2176
2177     if (!pdata)
2178         return 0;
2179
2180     switch (pdata->type)
2181     {
2182     case PT_VALUE:
2183         dwSize = pdata->u.file.dwFileSize;
2184         if (pOut)
2185             StrFormatKBSizeA(dwSize, pOut, uOutSize);
2186         return dwSize;
2187     }
2188     if (pOut)
2189         *pOut = 0x00;
2190     return 0;
2191 }
2192
2193 BOOL _ILGetExtension (LPCITEMIDLIST pidl, LPSTR pOut, UINT uOutSize)
2194 {
2195     char szTemp[MAX_PATH];
2196     const char * pPoint;
2197     LPCITEMIDLIST  pidlTemp=pidl;
2198
2199     TRACE("pidl=%p\n",pidl);
2200
2201     if (!pidl)
2202         return FALSE;
2203
2204     pidlTemp = ILFindLastID(pidl);
2205
2206     if (!_ILIsValue(pidlTemp))
2207         return FALSE;
2208     if (!_ILSimpleGetText(pidlTemp, szTemp, MAX_PATH))
2209         return FALSE;
2210
2211     pPoint = PathFindExtensionA(szTemp);
2212
2213     if (!*pPoint)
2214         return FALSE;
2215
2216     pPoint++;
2217     lstrcpynA(pOut, pPoint, uOutSize);
2218     TRACE("%s\n",pOut);
2219
2220     return TRUE;
2221 }
2222
2223 /*************************************************************************
2224  * _ILGetFileType
2225  *
2226  * Given the ItemIdList, get the file type description
2227  *
2228  * PARAMS
2229  *      pidl        [I] The ItemIDList (simple)
2230  *      pOut        [I] The buffer to save the result
2231  *      uOutsize    [I] The size of the buffer
2232  *
2233  * RETURNS
2234  *    nothing
2235  *
2236  * NOTES
2237  *    This function copies as much as possible into the buffer.
2238  */
2239 void _ILGetFileType(LPCITEMIDLIST pidl, LPSTR pOut, UINT uOutSize)
2240 {
2241     if(_ILIsValue(pidl))
2242     {
2243         char sTemp[64];
2244
2245         if(uOutSize > 0)
2246             pOut[0] = 0;
2247         if (_ILGetExtension (pidl, sTemp, 64))
2248         {
2249             if (!( HCR_MapTypeToValueA(sTemp, sTemp, 64, TRUE)
2250                 && HCR_MapTypeToValueA(sTemp, pOut, uOutSize, FALSE )))
2251             {
2252                 lstrcpynA (pOut, sTemp, uOutSize - 6);
2253                 strcat (pOut, "-file");
2254             }
2255         }
2256     }
2257     else
2258         lstrcpynA(pOut, "Folder", uOutSize);
2259 }
2260
2261 /*************************************************************************
2262  * _ILGetFileAttributes
2263  *
2264  * Given the ItemIdList, get the Attrib string format
2265  *
2266  * PARAMS
2267  *      pidl        [I] The ItemIDList
2268  *      pOut        [I] The buffer to save the result
2269  *      uOutsize    [I] The size of the Buffer
2270  *
2271  * RETURNS
2272  *     Attributes
2273  *
2274  * FIXME
2275  *  return value 0 in case of error is a valid return value
2276  *
2277  */
2278 DWORD _ILGetFileAttributes(LPCITEMIDLIST pidl, LPSTR pOut, UINT uOutSize)
2279 {
2280     LPPIDLDATA pData = _ILGetDataPointer(pidl);
2281     WORD wAttrib = 0;
2282     int i;
2283
2284     if (!pData)
2285         return 0;
2286
2287     switch(pData->type)
2288     {
2289     case PT_FOLDER:
2290     case PT_VALUE:
2291         wAttrib = pData->u.file.uFileAttribs;
2292         break;
2293     }
2294
2295     if(uOutSize >= 6)
2296     {
2297         i=0;
2298         if(wAttrib & FILE_ATTRIBUTE_READONLY)
2299             pOut[i++] = 'R';
2300         if(wAttrib & FILE_ATTRIBUTE_HIDDEN)
2301             pOut[i++] = 'H';
2302         if(wAttrib & FILE_ATTRIBUTE_SYSTEM)
2303             pOut[i++] = 'S';
2304         if(wAttrib & FILE_ATTRIBUTE_ARCHIVE)
2305             pOut[i++] = 'A';
2306         if(wAttrib & FILE_ATTRIBUTE_COMPRESSED)
2307             pOut[i++] = 'C';
2308         pOut[i] = 0x00;
2309     }
2310     return wAttrib;
2311 }
2312
2313 /*************************************************************************
2314  * ILFreeaPidl
2315  *
2316  * free a aPidl struct
2317  */
2318 void _ILFreeaPidl(LPITEMIDLIST * apidl, UINT cidl)
2319 {
2320     UINT   i;
2321
2322     if (apidl)
2323     {
2324         for (i = 0; i < cidl; i++)
2325             SHFree(apidl[i]);
2326         SHFree(apidl);
2327     }
2328 }
2329
2330 /*************************************************************************
2331  * ILCopyaPidl
2332  *
2333  * copies an aPidl struct
2334  */
2335 LPITEMIDLIST* _ILCopyaPidl(const LPCITEMIDLIST * apidlsrc, UINT cidl)
2336 {
2337     UINT i;
2338     LPITEMIDLIST *apidldest;
2339
2340     apidldest = SHAlloc(cidl * sizeof(LPITEMIDLIST));
2341     if (!apidlsrc)
2342         return NULL;
2343
2344     for (i = 0; i < cidl; i++)
2345         apidldest[i] = ILClone(apidlsrc[i]);
2346
2347     return apidldest;
2348 }
2349
2350 /*************************************************************************
2351  * _ILCopyCidaToaPidl
2352  *
2353  * creates aPidl from CIDA
2354  */
2355 LPITEMIDLIST* _ILCopyCidaToaPidl(LPITEMIDLIST* pidl, const CIDA * cida)
2356 {
2357     UINT i;
2358     LPITEMIDLIST *dst;
2359
2360     dst = SHAlloc(cida->cidl * sizeof(LPITEMIDLIST));
2361     if (!dst)
2362         return NULL;
2363
2364     if (pidl)
2365         *pidl = ILClone((LPCITEMIDLIST)(&((const BYTE*)cida)[cida->aoffset[0]]));
2366
2367     for (i = 0; i < cida->cidl; i++)
2368         dst[i] = ILClone((LPCITEMIDLIST)(&((const BYTE*)cida)[cida->aoffset[i + 1]]));
2369
2370     return dst;
2371 }
2372
2373 HRESULT WINAPI SHCreateShellItem(LPCITEMIDLIST pidlParent,
2374     IShellFolder *psfParent, LPCITEMIDLIST pidl, void **ppsi)
2375 {
2376     FIXME("STUB: %p %p %p %p\n",pidlParent, psfParent, pidl, ppsi);
2377     return E_NOINTERFACE;
2378 }