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