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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  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 <stdlib.h>
  30 #include <string.h>
  31 #include "winbase.h"
  32 #include "winreg.h"
  33 #include "shlguid.h"
  34 #include "winerror.h"
  35 #include "winnls.h"
  36 #include "undocshell.h"
  37 #include "shell32_main.h"
  38 #include "shellapi.h"
  39 #include "shlwapi.h"
  40
  41 #include "pidl.h"
  42 #include "debughlp.h"
  43 #include "wine/debug.h"
  44
  45 WINE_DEFAULT_DEBUG_CHANNEL(pidl);
  46 WINE_DECLARE_DEBUG_CHANNEL(shell);
  47
  48 /* from comctl32.dll */
  49 extern LPVOID WINAPI Alloc(INT);
  50 extern BOOL WINAPI Free(LPVOID);
  51
  52 /*************************************************************************
  53  * ILGetDisplayNameEx           [SHELL32.186]
  54  *
  55  * Retrieves the display name of an ItemIDList
  56  *
  57  * PARAMS
  58  *  psf        [I]   Shell Folder to start with, if NULL the desktop is used
  59  *  pidl       [I]   ItemIDList relativ to the psf to get the display name for
  60  *  path       [O]   Filled in with the display name, assumed to be at least MAX_PATH long
  61  *  type       [I]   Type of display name to retrieve
  62  *                    0 = SHGDN_FORPARSING | SHGDN_FORADDRESSBAR uses always the desktop as root
  63  *                    1 = SHGDN_NORMAL relative to the root folder
  64  *                    2 = SHGDN_INFOLDER relative to the root folder, only the last name
  65  *
  66  * RETURNS
  67  *  True if the display name could be retrieved successfully, False otherwise
  68  */
  69 BOOL WINAPI ILGetDisplayNameExA(LPSHELLFOLDER psf, LPCITEMIDLIST pidl, LPSTR path, DWORD type)
  70 {
  71         BOOL ret = FALSE;
  72         WCHAR wPath[MAX_PATH];
  73
  74         TRACE("%p %p %p %ld\n", psf, pidl, path, type);
  75
  76         if (!pidl || !path)
  77           return FALSE;
  78
  79         ret = ILGetDisplayNameExW(psf, pidl, wPath, type);
  80         WideCharToMultiByte(CP_ACP, 0, wPath, -1, path, MAX_PATH, NULL, NULL);
  81         TRACE("%p %p %s\n", psf, pidl, debugstr_a(path));
  82
  83         return ret;
  84 }
  85
  86 BOOL WINAPI ILGetDisplayNameExW(LPSHELLFOLDER psf, LPCITEMIDLIST pidl, LPWSTR path, DWORD type)
  87 {
  88         LPSHELLFOLDER psfParent, lsf = psf;
  89         HRESULT ret = NO_ERROR;
  90         LPITEMIDLIST pidllast;
  91         STRRET strret;
  92         DWORD flag;
  93
  94         TRACE("%p %p %p %ld\n", psf, pidl, path, type);
  95
  96         if (!pidl || !path)
  97           return FALSE;
  98
  99         if (!lsf)
 100         {
 101           ret = SHGetDesktopFolder(&lsf);
 102           if (FAILED(ret))
 103             return FALSE;
 104         }
 105
 106         if (type >= 0 && type <= 2)
 107         {
 108           switch (type)
 109           {
 110             case ILGDN_FORPARSING:
 111               flag = SHGDN_FORPARSING | SHGDN_FORADDRESSBAR;
 112               break;
 113             case ILGDN_NORMAL:
 114               flag = SHGDN_NORMAL;
 115               break;
 116             case ILGDN_INFOLDER:
 117               flag = SHGDN_INFOLDER;
 118               break;
 119             default:
 120               FIXME("Unknown type parameter = %lx", type);
 121               flag = SHGDN_FORPARSING | SHGDN_FORADDRESSBAR;
 122               break;
 123           }
 124           if (!*(LPWORD)pidl || type == ILGDN_FORPARSING)
 125           {
 126             ret = IShellFolder_GetDisplayNameOf(lsf, pidl, flag, &strret);
 127             if (SUCCEEDED(ret))
 128             {
 129               ret = StrRetToStrNW(path, MAX_PATH, &strret, pidl);
 130             }
 131           }
 132           else
 133           {
 134             ret = SHBindToParent(pidl, &IID_IShellFolder, (LPVOID*)&psfParent, &pidllast);
 135             if (SUCCEEDED(ret))
 136             {
 137               ret = IShellFolder_GetDisplayNameOf(psfParent, pidllast, flag, &strret);
 138               if (SUCCEEDED(ret))
 139               {
 140                 ret = StrRetToStrNW(path, MAX_PATH, &strret, pidllast);
 141               }
 142               IShellFolder_Release(psfParent);
 143             }
 144           }
 145         }
 146
 147         TRACE("%p %p %s\n", psf, pidl, debugstr_w(path));
 148
 149         if (!psf)
 150           IShellFolder_Release(lsf);
 151         return SUCCEEDED(ret);
 152 }
 153
 154 BOOL WINAPI ILGetDisplayNameEx(LPSHELLFOLDER psf, LPCITEMIDLIST pidl, LPVOID path, DWORD type)
 155 {
 156         TRACE_(shell)("%p %p %p %ld\n", psf, pidl, path, type);
 157         if (SHELL_OsIsUnicode())
 158           return ILGetDisplayNameExW(psf, pidl, path, type);
 159         return ILGetDisplayNameExA(psf, pidl, path, type);
 160 }
 161
 162 /*************************************************************************
 163  * ILGetDisplayName                     [SHELL32.15]
 164  */
 165 BOOL WINAPI ILGetDisplayName(LPCITEMIDLIST pidl, LPVOID path)
 166 {
 167         TRACE_(shell)("%p %p\n", pidl, path);
 168         if (SHELL_OsIsUnicode())
 169           return ILGetDisplayNameExW(NULL, pidl, path, ILGDN_FORPARSING);
 170         return ILGetDisplayNameExA(NULL, pidl, path, ILGDN_FORPARSING);
 171 }
 172
 173 /*************************************************************************
 174  * ILFindLastID [SHELL32.16]
 175  *
 176  * NOTES
 177  *   observed: pidl=Desktop return=pidl
 178  */
 179 LPITEMIDLIST WINAPI ILFindLastID(LPITEMIDLIST pidl)
 180 {       LPITEMIDLIST   pidlLast = pidl;
 181
 182         TRACE("(pidl=%p)\n",pidl);
 183
 184         while (pidl->mkid.cb)
 185         {
 186           pidlLast = pidl;
 187           pidl = ILGetNext(pidl);
 188         }
 189         return pidlLast;
 190 }
 191 /*************************************************************************
 192  * ILRemoveLastID [SHELL32.17]
 193  *
 194  * NOTES
 195  *   when pidl=Desktop return=FALSE
 196  */
 197 BOOL WINAPI ILRemoveLastID(LPCITEMIDLIST pidl)
 198 {
 199         TRACE_(shell)("pidl=%p\n",pidl);
 200
 201         if (!pidl || !pidl->mkid.cb)
 202           return 0;
 203         ILFindLastID(pidl)->mkid.cb = 0;
 204         return 1;
 205 }
 206
 207 /*************************************************************************
 208  * ILClone [SHELL32.18]
 209  *
 210  * NOTES
 211  *    duplicate an idlist
 212  */
 213 LPITEMIDLIST WINAPI ILClone (LPCITEMIDLIST pidl)
 214 { DWORD    len;
 215   LPITEMIDLIST  newpidl;
 216
 217   if (!pidl)
 218     return NULL;
 219
 220   len = ILGetSize(pidl);
 221   newpidl = (LPITEMIDLIST)SHAlloc(len);
 222   if (newpidl)
 223     memcpy(newpidl,pidl,len);
 224
 225   TRACE("pidl=%p newpidl=%p\n",pidl, newpidl);
 226   pdump(pidl);
 227
 228   return newpidl;
 229 }
 230 /*************************************************************************
 231  * ILCloneFirst [SHELL32.19]
 232  *
 233  * NOTES
 234  *  duplicates the first idlist of a complex pidl
 235  */
 236 LPITEMIDLIST WINAPI ILCloneFirst(LPCITEMIDLIST pidl)
 237 {       DWORD len;
 238         LPITEMIDLIST pidlNew = NULL;
 239
 240         TRACE("pidl=%p \n",pidl);
 241         pdump(pidl);
 242
 243         if (pidl)
 244         {
 245           len = pidl->mkid.cb;
 246           pidlNew = (LPITEMIDLIST) SHAlloc (len+2);
 247           if (pidlNew)
 248           {
 249             memcpy(pidlNew,pidl,len+2);         /* 2 -> mind a desktop pidl */
 250
 251             if (len)
 252               ILGetNext(pidlNew)->mkid.cb = 0x00;
 253           }
 254         }
 255         TRACE("-- newpidl=%p\n",pidlNew);
 256
 257         return pidlNew;
 258 }
 259
 260 /*************************************************************************
 261  * ILLoadFromStream (SHELL32.26)
 262  *
 263  * NOTES
 264  *   the first two bytes are the len, the pidl is following then
 265  */
 266 HRESULT WINAPI ILLoadFromStream (IStream * pStream, LPITEMIDLIST * ppPidl)
 267 {       WORD            wLen = 0;
 268         DWORD           dwBytesRead;
 269         HRESULT         ret = E_FAIL;
 270
 271
 272         TRACE_(shell)("%p %p\n", pStream ,  ppPidl);
 273
 274         if (*ppPidl)
 275         { SHFree(*ppPidl);
 276           *ppPidl = NULL;
 277         }
 278
 279         IStream_AddRef (pStream);
 280
 281         if (SUCCEEDED(IStream_Read(pStream, (LPVOID)&wLen, 2, &dwBytesRead)))
 282         { *ppPidl = SHAlloc (wLen);
 283           if (SUCCEEDED(IStream_Read(pStream, *ppPidl , wLen, &dwBytesRead)))
 284           { ret = S_OK;
 285           }
 286           else
 287           { SHFree(*ppPidl);
 288             *ppPidl = NULL;
 289           }
 290         }
 291
 292         /* we are not yet fully compatible */
 293         if (!pcheck(*ppPidl))
 294         { SHFree(*ppPidl);
 295           *ppPidl = NULL;
 296         }
 297
 298
 299         IStream_Release (pStream);
 300
 301         return ret;
 302 }
 303
 304 /*************************************************************************
 305  * ILSaveToStream (SHELL32.27)
 306  *
 307  * NOTES
 308  *   the first two bytes are the len, the pidl is following then
 309  */
 310 HRESULT WINAPI ILSaveToStream (IStream * pStream, LPCITEMIDLIST pPidl)
 311 {
 312         LPITEMIDLIST    pidl;
 313         WORD            wLen = 0;
 314         HRESULT         ret = E_FAIL;
 315
 316         TRACE_(shell)("%p %p\n", pStream, pPidl);
 317
 318         IStream_AddRef (pStream);
 319
 320         pidl = pPidl;
 321         while (pidl->mkid.cb)
 322         {
 323           wLen += sizeof(WORD) + pidl->mkid.cb;
 324           pidl = ILGetNext(pidl);
 325         }
 326
 327         if (SUCCEEDED(IStream_Write(pStream, (LPVOID)&wLen, 2, NULL)))
 328         {
 329           if (SUCCEEDED(IStream_Write(pStream, pPidl, wLen, NULL)))
 330           { ret = S_OK;
 331           }
 332         }
 333         IStream_Release (pStream);
 334
 335         return ret;
 336 }
 337
 338 HRESULT WINAPI SHILCreateFromPathA (LPCSTR path, LPITEMIDLIST * ppidl, DWORD * attributes)
 339 {       LPSHELLFOLDER sf;
 340         WCHAR lpszDisplayName[MAX_PATH];
 341         DWORD pchEaten;
 342         HRESULT ret = E_FAIL;
 343
 344         TRACE_(shell)("%s %p 0x%08lx\n",path,ppidl,attributes?*attributes:0);
 345
 346         if (!MultiByteToWideChar( CP_ACP, 0, path, -1, lpszDisplayName, MAX_PATH ))
 347             lpszDisplayName[MAX_PATH-1] = 0;
 348
 349         if (SUCCEEDED (SHGetDesktopFolder(&sf)))
 350         {
 351           ret = IShellFolder_ParseDisplayName(sf,0, NULL,lpszDisplayName,&pchEaten,ppidl,attributes);
 352           IShellFolder_Release(sf);
 353         }
 354         return ret;
 355 }
 356
 357 HRESULT WINAPI SHILCreateFromPathW (LPCWSTR path, LPITEMIDLIST * ppidl, DWORD * attributes)
 358 {       LPSHELLFOLDER sf;
 359         DWORD pchEaten;
 360         HRESULT ret = E_FAIL;
 361
 362         TRACE_(shell)("%s %p 0x%08lx\n",debugstr_w(path),ppidl,attributes?*attributes:0);
 363
 364         if (SUCCEEDED (SHGetDesktopFolder(&sf)))
 365         {
 366           ret = IShellFolder_ParseDisplayName(sf,0, NULL, (LPWSTR) path, &pchEaten, ppidl, attributes);
 367           IShellFolder_Release(sf);
 368         }
 369         return ret;
 370 }
 371
 372 /*************************************************************************
 373  * SHILCreateFromPath   [SHELL32.28]
 374  *
 375  * NOTES
 376  *   Wrapper for IShellFolder_ParseDisplayName().
 377  */
 378 HRESULT WINAPI SHILCreateFromPathAW (LPCVOID path, LPITEMIDLIST * ppidl, DWORD * attributes)
 379 {
 380         if ( SHELL_OsIsUnicode())
 381           return SHILCreateFromPathW (path, ppidl, attributes);
 382         return SHILCreateFromPathA (path, ppidl, attributes);
 383 }
 384
 385 /*************************************************************************
 386  * SHCloneSpecialIDList [SHELL32.89]
 387  *
 388  * PARAMETERS
 389  *  hwndOwner   [in]
 390  *  nFolder     [in]    CSIDL_xxxxx ??
 391  *
 392  * RETURNS
 393  *  pidl ??
 394  * NOTES
 395  *     exported by ordinal
 396  */
 397 LPITEMIDLIST WINAPI SHCloneSpecialIDList(HWND hwndOwner,DWORD nFolder,DWORD x3)
 398 {       LPITEMIDLIST ppidl;
 399         WARN_(shell)("(hwnd=%p,csidl=0x%lx,0x%lx):semi-stub.\n",
 400                                          hwndOwner,nFolder,x3);
 401
 402         SHGetSpecialFolderLocation(hwndOwner, nFolder, &ppidl);
 403
 404         return ppidl;
 405 }
 406
 407 /*************************************************************************
 408  * ILGlobalClone [SHELL32.20]
 409  *
 410  */
 411 LPITEMIDLIST WINAPI ILGlobalClone(LPCITEMIDLIST pidl)
 412 {       DWORD    len;
 413         LPITEMIDLIST  newpidl;
 414
 415         if (!pidl)
 416           return NULL;
 417
 418         len = ILGetSize(pidl);
 419         newpidl = (LPITEMIDLIST)Alloc(len);
 420         if (newpidl)
 421           memcpy(newpidl,pidl,len);
 422
 423         TRACE("pidl=%p newpidl=%p\n",pidl, newpidl);
 424         pdump(pidl);
 425
 426         return newpidl;
 427 }
 428
 429 /*************************************************************************
 430  * ILIsEqual [SHELL32.21]
 431  *
 432  */
 433 BOOL WINAPI ILIsEqual(LPCITEMIDLIST pidl1, LPCITEMIDLIST pidl2)
 434 {
 435         char    szData1[MAX_PATH];
 436         char    szData2[MAX_PATH];
 437
 438         LPITEMIDLIST pidltemp1 = pidl1;
 439         LPITEMIDLIST pidltemp2 = pidl2;
 440
 441         TRACE("pidl1=%p pidl2=%p\n",pidl1, pidl2);
 442
 443         /* explorer reads from registry directly (StreamMRU),
 444            so we can only check here */
 445         if ((!pcheck (pidl1)) || (!pcheck (pidl2))) return FALSE;
 446
 447         pdump (pidl1);
 448         pdump (pidl2);
 449
 450         if ( (!pidl1) || (!pidl2) ) return FALSE;
 451
 452         while (pidltemp1->mkid.cb && pidltemp2->mkid.cb)
 453         {
 454             _ILSimpleGetText(pidltemp1, szData1, MAX_PATH);
 455             _ILSimpleGetText(pidltemp2, szData2, MAX_PATH);
 456
 457             if (strcasecmp ( szData1, szData2 )!=0 )
 458               return FALSE;
 459
 460             pidltemp1 = ILGetNext(pidltemp1);
 461             pidltemp2 = ILGetNext(pidltemp2);
 462         }
 463
 464         if (!pidltemp1->mkid.cb && !pidltemp2->mkid.cb)
 465         {
 466           return TRUE;
 467         }
 468
 469         return FALSE;
 470 }
 471 /*************************************************************************
 472  * ILIsParent [SHELL32.23]
 473  *
 474  * parent=a/b   child=a/b/c -> true, c is in folder a/b
 475  *              child=a/b/c/d -> false if bImmediate is true, d is not in folder a/b
 476  *              child=a/b/c/d -> true if bImmediate is false, d is in a subfolder of a/b
 477  */
 478 BOOL WINAPI ILIsParent( LPCITEMIDLIST pidlParent, LPCITEMIDLIST pidlChild, BOOL bImmediate)
 479 {
 480         char    szData1[MAX_PATH];
 481         char    szData2[MAX_PATH];
 482
 483         LPITEMIDLIST pParent = pidlParent;
 484         LPITEMIDLIST pChild = pidlChild;
 485
 486         TRACE("%p %p %x\n", pidlParent, pidlChild, bImmediate);
 487
 488         while (pParent->mkid.cb && pChild->mkid.cb)
 489         {
 490           _ILSimpleGetText(pParent, szData1, MAX_PATH);
 491           _ILSimpleGetText(pChild, szData2, MAX_PATH);
 492
 493           if (strcasecmp ( szData1, szData2 )!=0 )
 494             return FALSE;
 495
 496           pParent = ILGetNext(pParent);
 497           pChild = ILGetNext(pChild);
 498         }
 499
 500         if ( pParent->mkid.cb || ! pChild->mkid.cb)     /* child shorter or has equal length to parent */
 501           return FALSE;
 502
 503         if ( ILGetNext(pChild)->mkid.cb && bImmediate)  /* not immediate descent */
 504           return FALSE;
 505
 506         return TRUE;
 507 }
 508
 509 /*************************************************************************
 510  * ILFindChild [SHELL32.24]
 511  *
 512  * NOTES
 513  *  Compares elements from pidl1 and pidl2.
 514  *
 515  *  pidl1 is desktop            pidl2
 516  *  pidl1 shorter pidl2         pointer to first different element of pidl2
 517  *                              if there was at least one equal element
 518  *  pidl2 shorter pidl1         0
 519  *  pidl2 equal pidl1           pointer to last 0x00-element of pidl2
 520  */
 521 LPITEMIDLIST WINAPI ILFindChild(LPCITEMIDLIST pidl1,LPCITEMIDLIST pidl2)
 522 {
 523         char    szData1[MAX_PATH];
 524         char    szData2[MAX_PATH];
 525
 526         LPITEMIDLIST pidltemp1 = pidl1;
 527         LPITEMIDLIST pidltemp2 = pidl2;
 528         LPITEMIDLIST ret=NULL;
 529
 530         TRACE("pidl1=%p pidl2=%p\n",pidl1, pidl2);
 531
 532         /* explorer reads from registry directly (StreamMRU),
 533            so we can only check here */
 534         if ((!pcheck (pidl1)) || (!pcheck (pidl2)))
 535           return FALSE;
 536
 537         pdump (pidl1);
 538         pdump (pidl2);
 539
 540         if ( _ILIsDesktop(pidl1) )
 541         {
 542           ret = pidl2;
 543         }
 544         else
 545         {
 546           while (pidltemp1->mkid.cb && pidltemp2->mkid.cb)
 547           {
 548             _ILSimpleGetText(pidltemp1, szData1, MAX_PATH);
 549             _ILSimpleGetText(pidltemp2, szData2, MAX_PATH);
 550
 551             if (strcasecmp(szData1,szData2))
 552               break;
 553
 554             pidltemp1 = ILGetNext(pidltemp1);
 555             pidltemp2 = ILGetNext(pidltemp2);
 556             ret = pidltemp2;
 557           }
 558
 559           if (pidltemp1->mkid.cb)
 560           {
 561             ret = NULL; /* elements of pidl1 left*/
 562           }
 563         }
 564         TRACE_(shell)("--- %p\n", ret);
 565         return ret; /* pidl 1 is shorter */
 566 }
 567
 568 /*************************************************************************
 569  * ILCombine [SHELL32.25]
 570  *
 571  * NOTES
 572  *  Concatenates two complex idlists.
 573  *  The pidl is the first one, pidlsub the next one
 574  *  Does not destroy the passed in idlists!
 575  */
 576 LPITEMIDLIST WINAPI ILCombine(LPCITEMIDLIST pidl1,LPCITEMIDLIST pidl2)
 577 {
 578         DWORD    len1,len2;
 579         LPITEMIDLIST  pidlNew;
 580
 581         TRACE("pidl=%p pidl=%p\n",pidl1,pidl2);
 582
 583         if(!pidl1 && !pidl2) return NULL;
 584
 585         pdump (pidl1);
 586         pdump (pidl2);
 587
 588         if(!pidl1)
 589         {
 590           pidlNew = ILClone(pidl2);
 591           return pidlNew;
 592         }
 593
 594         if(!pidl2)
 595         {
 596           pidlNew = ILClone(pidl1);
 597           return pidlNew;
 598         }
 599
 600         len1  = ILGetSize(pidl1)-2;
 601         len2  = ILGetSize(pidl2);
 602         pidlNew  = SHAlloc(len1+len2);
 603
 604         if (pidlNew)
 605         {
 606           memcpy(pidlNew,pidl1,len1);
 607           memcpy(((BYTE *)pidlNew)+len1,pidl2,len2);
 608         }
 609
 610         /*  TRACE(pidl,"--new pidl=%p\n",pidlNew);*/
 611         return pidlNew;
 612 }
 613 /*************************************************************************
 614  *  SHGetRealIDL [SHELL32.98]
 615  *
 616  * NOTES
 617  */
 618 LPITEMIDLIST WINAPI SHGetRealIDL(LPSHELLFOLDER lpsf, LPITEMIDLIST pidl, DWORD z)
 619 {
 620         FIXME("sf=%p pidl=%p 0x%04lx\n",lpsf,pidl,z);
 621
 622         pdump (pidl);
 623         return 0;
 624 }
 625
 626 /*************************************************************************
 627  *  SHLogILFromFSIL [SHELL32.95]
 628  *
 629  * NOTES
 630  *  pild = CSIDL_DESKTOP        ret = 0
 631  *  pild = CSIDL_DRIVES         ret = 0
 632  */
 633 LPITEMIDLIST WINAPI SHLogILFromFSIL(LPITEMIDLIST pidl)
 634 {
 635         FIXME("(pidl=%p)\n",pidl);
 636
 637         pdump(pidl);
 638
 639         return 0;
 640 }
 641
 642 /*************************************************************************
 643  * ILGetSize [SHELL32.152]
 644  *  gets the byte size of an idlist including zero terminator (pidl)
 645  *
 646  * PARAMETERS
 647  *  pidl ITEMIDLIST
 648  *
 649  * RETURNS
 650  *  size of pidl
 651  *
 652  * NOTES
 653  *  exported by ordinal
 654  */
 655 DWORD WINAPI ILGetSize(LPITEMIDLIST pidl)
 656 {
 657         LPSHITEMID si = &(pidl->mkid);
 658         DWORD  len=0;
 659
 660         if (pidl)
 661         { while (si->cb)
 662           { len += si->cb;
 663             si  = (LPSHITEMID)(((LPBYTE)si)+si->cb);
 664           }
 665           len += 2;
 666         }
 667         TRACE("pidl=%p size=%lu\n",pidl, len);
 668         return len;
 669 }
 670
 671 /*************************************************************************
 672  * ILGetNext [SHELL32.153]
 673  *  gets the next simple pidl of a complex pidl
 674  *
 675  * observed return values:
 676  *  null -> null
 677  *  desktop -> null
 678  *  simple pidl -> pointer to 0x0000 element
 679  *
 680  */
 681 LPITEMIDLIST WINAPI ILGetNext(LPITEMIDLIST pidl)
 682 {
 683         WORD len;
 684
 685         TRACE("%p\n", pidl);
 686
 687         if(pidl)
 688         {
 689           len =  pidl->mkid.cb;
 690           if (len)
 691           {
 692             pidl = (LPITEMIDLIST) (((LPBYTE)pidl)+len);
 693             TRACE("-- %p\n", pidl);
 694             return pidl;
 695           }
 696         }
 697         return NULL;
 698 }
 699 /*************************************************************************
 700  * ILAppend [SHELL32.154]
 701  *
 702  * NOTES
 703  *  Adds the single item to the idlist indicated by pidl.
 704  *  if bEnd is 0, adds the item to the front of the list,
 705  *  otherwise adds the item to the end. (???)
 706  *  Destroys the passed in idlist! (???)
 707  */
 708 LPITEMIDLIST WINAPI ILAppend(LPITEMIDLIST pidl,LPCITEMIDLIST item,BOOL bEnd)
 709 {
 710         LPITEMIDLIST idlRet;
 711
 712         WARN("(pidl=%p,pidl=%p,%08u)semi-stub\n",pidl,item,bEnd);
 713
 714         pdump (pidl);
 715         pdump (item);
 716
 717         if (_ILIsDesktop(pidl))
 718         {
 719            idlRet = ILClone(item);
 720            if (pidl)
 721              SHFree (pidl);
 722            return idlRet;
 723         }
 724
 725         if (bEnd)
 726         {
 727           idlRet=ILCombine(pidl,item);
 728         }
 729         else
 730         {
 731           idlRet=ILCombine(item,pidl);
 732         }
 733
 734         SHFree(pidl);
 735         return idlRet;
 736 }
 737 /*************************************************************************
 738  * ILFree [SHELL32.155]
 739  *
 740  * NOTES
 741  *     free_check_ptr - frees memory (if not NULL)
 742  *     allocated by SHMalloc allocator
 743  *     exported by ordinal
 744  */
 745 DWORD WINAPI ILFree(LPITEMIDLIST pidl)
 746 {
 747         TRACE("(pidl=0x%08lx)\n",(DWORD)pidl);
 748
 749         if(!pidl) return FALSE;
 750         SHFree(pidl);
 751         return TRUE;
 752 }
 753 /*************************************************************************
 754  * ILGlobalFree [SHELL32.156]
 755  *
 756  */
 757 void WINAPI ILGlobalFree( LPCITEMIDLIST pidl)
 758 {
 759         TRACE("%p\n",pidl);
 760
 761         if(!pidl) return;
 762         Free(pidl);
 763 }
 764 /*************************************************************************
 765  * ILCreateFromPath [SHELL32.157]
 766  *
 767  */
 768 LPITEMIDLIST WINAPI ILCreateFromPathA (LPCSTR path)
 769 {
 770         LPITEMIDLIST pidlnew;
 771         DWORD attributes = 0;
 772
 773         TRACE_(shell)("%s\n",path);
 774
 775         if (SUCCEEDED (SHILCreateFromPathA (path, &pidlnew, &attributes)))
 776           return pidlnew;
 777         return FALSE;
 778 }
 779 LPITEMIDLIST WINAPI ILCreateFromPathW (LPCWSTR path)
 780 {
 781         LPITEMIDLIST pidlnew;
 782         DWORD attributes = 0;
 783
 784         TRACE_(shell)("%s\n",debugstr_w(path));
 785
 786         if (SUCCEEDED (SHILCreateFromPathW (path, &pidlnew, &attributes)))
 787           return pidlnew;
 788         return FALSE;
 789 }
 790 LPITEMIDLIST WINAPI ILCreateFromPathAW (LPCVOID path)
 791 {
 792         if ( SHELL_OsIsUnicode())
 793           return ILCreateFromPathW (path);
 794         return ILCreateFromPathA (path);
 795 }
 796 /*************************************************************************
 797  *  SHSimpleIDListFromPath [SHELL32.162]
 798  */
 799 LPITEMIDLIST WINAPI SHSimpleIDListFromPathA (LPCSTR lpszPath)
 800 {
 801         LPITEMIDLIST    pidl=NULL;
 802         HANDLE  hFile;
 803         WIN32_FIND_DATAA        stffile;
 804
 805         TRACE("path=%s\n", lpszPath);
 806
 807         if (!lpszPath) return NULL;
 808
 809         hFile = FindFirstFileA(lpszPath, &stffile);
 810
 811         if ( hFile != INVALID_HANDLE_VALUE )
 812         {
 813           if (stffile.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
 814           {
 815             pidl = _ILCreateFolder (&stffile);
 816           }
 817           else
 818           {
 819             pidl = _ILCreateValue (&stffile);
 820           }
 821           FindClose (hFile);
 822         }
 823         return pidl;
 824 }
 825 LPITEMIDLIST WINAPI SHSimpleIDListFromPathW (LPCWSTR lpszPath)
 826 {
 827         char    lpszTemp[MAX_PATH];
 828         TRACE("path=%s\n",debugstr_w(lpszPath));
 829
 830         if (!WideCharToMultiByte( CP_ACP, 0, lpszPath, -1, lpszTemp, sizeof(lpszTemp), NULL, NULL ))
 831             lpszTemp[sizeof(lpszTemp)-1] = 0;
 832
 833         return SHSimpleIDListFromPathA (lpszTemp);
 834 }
 835
 836 LPITEMIDLIST WINAPI SHSimpleIDListFromPathAW (LPCVOID lpszPath)
 837 {
 838         if ( SHELL_OsIsUnicode())
 839           return SHSimpleIDListFromPathW (lpszPath);
 840         return SHSimpleIDListFromPathA (lpszPath);
 841 }
 842
 843 /*************************************************************************
 844  * SHGetSpecialFolderLocation           [SHELL32.@]
 845  *
 846  * gets the folder locations from the registry and creates a pidl
 847  * creates missing reg keys and directories
 848  *
 849  * PARAMS
 850  *   hwndOwner [I]
 851  *   nFolder   [I] CSIDL_xxxxx
 852  *   ppidl     [O] PIDL of a special folder
 853  *
 854  */
 855 HRESULT WINAPI SHGetSpecialFolderLocation(
 856         HWND hwndOwner,
 857         INT nFolder,
 858         LPITEMIDLIST * ppidl)
 859 {
 860         CHAR            szPath[MAX_PATH];
 861         HRESULT         hr = E_INVALIDARG;
 862
 863         TRACE_(shell)("(%p,0x%x,%p)\n", hwndOwner,nFolder,ppidl);
 864
 865         if (ppidl)
 866         {
 867           *ppidl = NULL;
 868           switch (nFolder)
 869           {
 870             case CSIDL_DESKTOP:
 871               *ppidl = _ILCreateDesktop();
 872               break;
 873
 874             case CSIDL_DRIVES:
 875               *ppidl = _ILCreateMyComputer();
 876               break;
 877
 878             case CSIDL_NETWORK:
 879               *ppidl = _ILCreateNetwork ();
 880               break;
 881
 882             case CSIDL_CONTROLS:
 883               *ppidl = _ILCreateControl ();
 884               break;
 885
 886             case CSIDL_PRINTERS:
 887               *ppidl = _ILCreatePrinter ();
 888               break;
 889
 890             case CSIDL_BITBUCKET:
 891               *ppidl = _ILCreateBitBucket ();
 892               break;
 893
 894             default:
 895               if (SHGetSpecialFolderPathA(hwndOwner, szPath, nFolder, TRUE))
 896               {
 897                 DWORD attributes=0;
 898                 TRACE_(shell)("Value=%s\n",szPath);
 899                 hr = SHILCreateFromPathA(szPath, ppidl, &attributes);
 900               }
 901           }
 902           if(*ppidl) hr = NOERROR;
 903         }
 904
 905         TRACE_(shell)("-- (new pidl %p)\n",*ppidl);
 906         return hr;
 907 }
 908
 909 /*************************************************************************
 910  * SHGetFolderLocation [SHELL32.@]
 911  *
 912  * NOTES
 913  *  the pidl can be a simple one. since we cant get the path out of the pidl
 914  *  we have to take all data from the pidl
 915  */
 916 HRESULT WINAPI SHGetFolderLocation(
 917         HWND hwnd,
 918         int csidl,
 919         HANDLE hToken,
 920         DWORD dwFlags,
 921         LPITEMIDLIST *ppidl)
 922 {
 923         FIXME("%p 0x%08x %p 0x%08lx %p\n",
 924          hwnd, csidl, hToken, dwFlags, ppidl);
 925         return SHGetSpecialFolderLocation(hwnd, csidl, ppidl);
 926 }
 927
 928 /*************************************************************************
 929  * SHGetDataFromIDListA [SHELL32.247]
 930  *
 931  * NOTES
 932  *  the pidl can be a simple one. since we cant get the path out of the pidl
 933  *  we have to take all data from the pidl
 934  */
 935 HRESULT WINAPI SHGetDataFromIDListA(LPSHELLFOLDER psf, LPCITEMIDLIST pidl, int nFormat, LPVOID dest, int len)
 936 {
 937         TRACE_(shell)("sf=%p pidl=%p 0x%04x %p 0x%04x stub\n",psf,pidl,nFormat,dest,len);
 938
 939         pdump(pidl);
 940         if (!psf || !dest )  return E_INVALIDARG;
 941
 942         switch (nFormat)
 943         {
 944           case SHGDFIL_FINDDATA:
 945             {
 946                WIN32_FIND_DATAA * pfd = dest;
 947
 948                if ( len < sizeof (WIN32_FIND_DATAA)) return E_INVALIDARG;
 949
 950                ZeroMemory(pfd, sizeof (WIN32_FIND_DATAA));
 951                _ILGetFileDateTime( pidl, &(pfd->ftLastWriteTime));
 952                pfd->dwFileAttributes = _ILGetFileAttributes(pidl, NULL, 0);
 953                pfd->nFileSizeLow = _ILGetFileSize ( pidl, NULL, 0);
 954                lstrcpynA(pfd->cFileName,_ILGetTextPointer(pidl), MAX_PATH);
 955                lstrcpynA(pfd->cAlternateFileName,_ILGetSTextPointer(pidl), 14);
 956             }
 957             return NOERROR;
 958
 959           case SHGDFIL_NETRESOURCE:
 960           case SHGDFIL_DESCRIPTIONID:
 961             FIXME_(shell)("SHGDFIL %i stub\n", nFormat);
 962             break;
 963
 964           default:
 965             ERR_(shell)("Unknown SHGDFIL %i, please report\n", nFormat);
 966         }
 967
 968         return E_INVALIDARG;
 969 }
 970 /*************************************************************************
 971  * SHGetDataFromIDListW [SHELL32.248]
 972  *
 973  */
 974 HRESULT WINAPI SHGetDataFromIDListW(LPSHELLFOLDER psf, LPCITEMIDLIST pidl, int nFormat, LPVOID dest, int len)
 975 {
 976         TRACE_(shell)("sf=%p pidl=%p 0x%04x %p 0x%04x stub\n",psf,pidl,nFormat,dest,len);
 977
 978         pdump(pidl);
 979
 980         if (! psf || !dest )  return E_INVALIDARG;
 981
 982         switch (nFormat)
 983         {
 984           case SHGDFIL_FINDDATA:
 985             {
 986                WIN32_FIND_DATAW * pfd = dest;
 987
 988                if ( len < sizeof (WIN32_FIND_DATAW)) return E_INVALIDARG;
 989
 990                ZeroMemory(pfd, sizeof (WIN32_FIND_DATAA));
 991                _ILGetFileDateTime( pidl, &(pfd->ftLastWriteTime));
 992                pfd->dwFileAttributes = _ILGetFileAttributes(pidl, NULL, 0);
 993                pfd->nFileSizeLow = _ILGetFileSize ( pidl, NULL, 0);
 994                if (!MultiByteToWideChar( CP_ACP, 0, _ILGetTextPointer(pidl), -1,
 995                                          pfd->cFileName, MAX_PATH ))
 996                    pfd->cFileName[MAX_PATH-1] = 0;
 997                if (!MultiByteToWideChar( CP_ACP, 0, _ILGetSTextPointer(pidl), -1,
 998                                          pfd->cAlternateFileName, 14 ))
 999                    pfd->cFileName[13] = 0;
1000             }
1001             return NOERROR;
1002           case SHGDFIL_NETRESOURCE:
1003           case SHGDFIL_DESCRIPTIONID:
1004             FIXME_(shell)("SHGDFIL %i stub\n", nFormat);
1005             break;
1006
1007           default:
1008             ERR_(shell)("Unknown SHGDFIL %i, please report\n", nFormat);
1009         }
1010
1011         return E_INVALIDARG;
1012 }
1013
1014 /*************************************************************************
1015  * SHGetPathFromIDListA         [SHELL32.@][NT 4.0: SHELL32.220]
1016  *
1017  * PARAMETERS
1018  *  pidl,   [IN] pidl
1019  *  pszPath [OUT] path
1020  *
1021  * RETURNS
1022  *  path from a passed PIDL.
1023  *
1024  * NOTES
1025  *      NULL returns FALSE
1026  *      desktop pidl gives path to desktopdirectory back
1027  *      special pidls returning FALSE
1028  */
1029 BOOL WINAPI SHGetPathFromIDListA(LPCITEMIDLIST pidl, LPSTR pszPath)
1030 {
1031         HRESULT hr;
1032         STRRET str;
1033         LPSHELLFOLDER shellfolder;
1034
1035         TRACE_(shell)("(pidl=%p,%p)\n",pidl,pszPath);
1036         pdump(pidl);
1037
1038         if (!pidl) return FALSE;
1039
1040         hr = SHGetDesktopFolder(&shellfolder);
1041         if (SUCCEEDED (hr)) {
1042             hr = IShellFolder_GetDisplayNameOf(shellfolder,pidl,SHGDN_FORPARSING,&str);
1043             if(SUCCEEDED(hr)) {
1044                 StrRetToStrNA (pszPath, MAX_PATH, &str, pidl);
1045             }
1046             IShellFolder_Release(shellfolder);
1047         }
1048
1049         TRACE_(shell)("-- %s, 0x%08lx\n",pszPath, hr);
1050         return SUCCEEDED(hr);
1051 }
1052 /*************************************************************************
1053  * SHGetPathFromIDListW                         [SHELL32.@]
1054  */
1055 BOOL WINAPI SHGetPathFromIDListW(LPCITEMIDLIST pidl, LPWSTR pszPath)
1056 {
1057         HRESULT hr;
1058         STRRET str;
1059         LPSHELLFOLDER shellfolder;
1060
1061         TRACE_(shell)("(pidl=%p,%p)\n", pidl, debugstr_w(pszPath));
1062         pdump(pidl);
1063
1064         if (!pidl) return FALSE;
1065
1066         hr = SHGetDesktopFolder(&shellfolder);
1067         if (SUCCEEDED(hr)) {
1068             hr = IShellFolder_GetDisplayNameOf(shellfolder, pidl, SHGDN_FORPARSING, &str);
1069             if (SUCCEEDED(hr)) {
1070                 StrRetToStrNW(pszPath, MAX_PATH, &str, pidl);
1071             }
1072             IShellFolder_Release(shellfolder);
1073         }
1074
1075         TRACE_(shell)("-- %s, 0x%08lx\n",debugstr_w(pszPath), hr);
1076         return SUCCEEDED(hr);
1077 }
1078
1079 /*************************************************************************
1080  *      SHBindToParent          [shell version 5.0]
1081  */
1082 HRESULT WINAPI SHBindToParent(LPCITEMIDLIST pidl, REFIID riid, LPVOID *ppv, LPCITEMIDLIST *ppidlLast)
1083 {
1084         IShellFolder    * psf;
1085         LPITEMIDLIST    pidlChild, pidlParent;
1086         HRESULT         hr=E_FAIL;
1087
1088         TRACE_(shell)("pidl=%p\n", pidl);
1089         pdump(pidl);
1090
1091         *ppv = NULL;
1092         if (ppidlLast) *ppidlLast = NULL;
1093
1094         if (_ILIsPidlSimple(pidl))
1095         {
1096           /* we are on desktop level */
1097           if (ppidlLast)
1098             *ppidlLast = ILClone(pidl);
1099           hr = SHGetDesktopFolder((IShellFolder**)ppv);
1100         }
1101         else
1102         {
1103           pidlChild =  ILClone(ILFindLastID(pidl));
1104           pidlParent = ILClone(pidl);
1105           ILRemoveLastID(pidlParent);
1106
1107           hr = SHGetDesktopFolder(&psf);
1108
1109           if (SUCCEEDED(hr))
1110             hr = IShellFolder_BindToObject(psf, pidlParent, NULL, riid, ppv);
1111
1112           if (SUCCEEDED(hr) && ppidlLast)
1113             *ppidlLast = pidlChild;
1114           else
1115             ILFree (pidlChild);
1116
1117           SHFree (pidlParent);
1118           if (psf) IShellFolder_Release(psf);
1119         }
1120
1121
1122         TRACE_(shell)("-- psf=%p pidl=%p ret=0x%08lx\n", *ppv, (ppidlLast)?*ppidlLast:NULL, hr);
1123         return hr;
1124 }
1125
1126 /*************************************************************************
1127  * SHGetPathFromIDList          [SHELL32.@][NT 4.0: SHELL32.219]
1128  */
1129 BOOL WINAPI SHGetPathFromIDListAW(LPCITEMIDLIST pidl,LPVOID pszPath)
1130 {
1131         TRACE_(shell)("(pidl=%p,%p)\n",pidl,pszPath);
1132
1133         if (SHELL_OsIsUnicode())
1134           return SHGetPathFromIDListW(pidl,pszPath);
1135         return SHGetPathFromIDListA(pidl,pszPath);
1136 }
1137
1138 /**************************************************************************
1139  *
1140  *              internal functions
1141  *
1142  *      ### 1. section creating pidls ###
1143  *
1144  *************************************************************************
1145  *  _ILCreateDesktop()
1146  *  _ILCreateIExplore()
1147  *  _ILCreateMyComputer()
1148  *  _ILCreateDrive()
1149  *  _ILCreateFolder()
1150  *  _ILCreateValue()
1151  */
1152 LPITEMIDLIST _ILCreateDesktop()
1153 {       TRACE("()\n");
1154         return _ILCreate(PT_DESKTOP, NULL, 0);
1155 }
1156
1157 LPITEMIDLIST _ILCreateMyComputer()
1158 {       TRACE("()\n");
1159         return _ILCreate(PT_MYCOMP, &CLSID_MyComputer, sizeof(GUID));
1160 }
1161
1162 LPITEMIDLIST _ILCreateIExplore()
1163 {       TRACE("()\n");
1164         return _ILCreate(PT_MYCOMP, &CLSID_Internet, sizeof(GUID));
1165 }
1166
1167 LPITEMIDLIST _ILCreateControl()
1168 {       TRACE("()\n");
1169         return _ILCreate(PT_SPECIAL, &CLSID_ControlPanel, sizeof(GUID));
1170 }
1171
1172 LPITEMIDLIST _ILCreatePrinter()
1173 {       TRACE("()\n");
1174         return _ILCreate(PT_SPECIAL, &CLSID_Printers, sizeof(GUID));
1175 }
1176
1177 LPITEMIDLIST _ILCreateNetwork()
1178 {       TRACE("()\n");
1179         return _ILCreate(PT_MYCOMP, &CLSID_NetworkPlaces, sizeof(GUID));
1180 }
1181
1182 LPITEMIDLIST _ILCreateBitBucket()
1183 {       TRACE("()\n");
1184         return _ILCreate(PT_MYCOMP, &CLSID_RecycleBin, sizeof(GUID));
1185 }
1186
1187 LPITEMIDLIST _ILCreateDrive( LPCSTR lpszNew)
1188 {       char sTemp[4];
1189         lstrcpynA (sTemp,lpszNew,4);
1190         sTemp[2]='\\';
1191         sTemp[3]=0x00;
1192         TRACE("(%s)\n",sTemp);
1193         return _ILCreate(PT_DRIVE,(LPVOID)&sTemp[0],4);
1194 }
1195
1196 LPITEMIDLIST _ILCreateFolder( WIN32_FIND_DATAA * stffile )
1197 {
1198         char    buff[MAX_PATH + 14 +1]; /* see WIN32_FIND_DATA */
1199         char *  pbuff = buff;
1200         ULONG   len, len1;
1201         LPITEMIDLIST pidl;
1202
1203         TRACE("(%s, %s)\n",stffile->cAlternateFileName, stffile->cFileName);
1204
1205         /* prepare buffer with both names */
1206         len = strlen (stffile->cFileName) + 1;
1207         memcpy (pbuff, stffile->cFileName, len);
1208         pbuff += len;
1209
1210         if (stffile->cAlternateFileName)
1211         {
1212           len1 = strlen (stffile->cAlternateFileName)+1;
1213           memcpy (pbuff, stffile->cAlternateFileName, len1);
1214         }
1215         else
1216         {
1217           len1 = 1;
1218           *pbuff = 0x00;
1219         }
1220
1221         pidl = _ILCreate(PT_FOLDER, (LPVOID)buff, len + len1);
1222
1223         /* set attributes */
1224         if (pidl)
1225         {
1226           LPPIDLDATA pData;
1227           pData = _ILGetDataPointer(pidl);
1228           FileTimeToDosDateTime(&(stffile->ftLastWriteTime),&pData->u.folder.uFileDate,&pData->u.folder.uFileTime);
1229           pData->u.folder.dwFileSize = stffile->nFileSizeLow;
1230           pData->u.folder.uFileAttribs = stffile->dwFileAttributes;
1231         }
1232
1233         return pidl;
1234 }
1235
1236 LPITEMIDLIST _ILCreateValue(WIN32_FIND_DATAA * stffile)
1237 {
1238         char    buff[MAX_PATH + 14 +1]; /* see WIN32_FIND_DATA */
1239         char *  pbuff = buff;
1240         ULONG   len, len1;
1241         LPITEMIDLIST pidl;
1242
1243         TRACE("(%s, %s)\n",stffile->cAlternateFileName, stffile->cFileName);
1244
1245         /* prepare buffer with both names */
1246         len = strlen (stffile->cFileName) + 1;
1247         memcpy (pbuff, stffile->cFileName, len);
1248         pbuff += len;
1249
1250         if (stffile->cAlternateFileName)
1251         {
1252           len1 = strlen (stffile->cAlternateFileName)+1;
1253           memcpy (pbuff, stffile->cAlternateFileName, len1);
1254         }
1255         else
1256         {
1257           len1 = 1;
1258           *pbuff = 0x00;
1259         }
1260
1261         pidl = _ILCreate(PT_VALUE, (LPVOID)buff, len + len1);
1262
1263         /* set attributes */
1264         if (pidl)
1265         {
1266           LPPIDLDATA pData;
1267           pData = _ILGetDataPointer(pidl);
1268           FileTimeToDosDateTime(&(stffile->ftLastWriteTime),&pData->u.folder.uFileDate,&pData->u.folder.uFileTime);
1269           pData->u.folder.dwFileSize = stffile->nFileSizeLow;
1270           pData->u.folder.uFileAttribs=stffile->dwFileAttributes;
1271         }
1272
1273         return pidl;
1274 }
1275
1276 LPITEMIDLIST _ILCreateFromPathA(LPCSTR szPath)
1277 {
1278         HANDLE hFile;
1279         WIN32_FIND_DATAA stffile;
1280         LPITEMIDLIST pidl = NULL;
1281
1282         hFile = FindFirstFileA(szPath, &stffile);
1283         if (hFile != INVALID_HANDLE_VALUE)
1284         {
1285           if (stffile.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
1286             pidl = _ILCreateFolder(&stffile);
1287           else
1288             pidl = _ILCreateValue(&stffile);
1289           FindClose(hFile);
1290         }
1291         return pidl;
1292 }
1293
1294 LPITEMIDLIST _ILCreateSpecial(LPCSTR szGUID)
1295 {
1296         IID iid;
1297
1298         if (!SUCCEEDED(SHCLSIDFromStringA(szGUID, &iid)))
1299         {
1300           ERR("%s is not a GUID\n", szGUID);
1301           return NULL;
1302         }
1303         return _ILCreate(PT_MYCOMP, &iid, sizeof(IID));
1304 }
1305
1306 /**************************************************************************
1307  *  _ILCreate()
1308  *  Creates a new PIDL
1309  *  type = PT_DESKTOP | PT_DRIVE | PT_FOLDER | PT_VALUE
1310  *  pIn = data
1311  *  uInSize = size of data (raw)
1312  */
1313
1314 LPITEMIDLIST _ILCreate(PIDLTYPE type, LPCVOID pIn, UINT uInSize)
1315 {
1316         LPITEMIDLIST   pidlOut = NULL, pidlTemp = NULL;
1317         LPPIDLDATA     pData;
1318         UINT           uSize = 0;
1319         LPSTR   pszDest;
1320
1321         TRACE("(0x%02x %p %i)\n",type,pIn,uInSize);
1322
1323         switch (type)
1324         {
1325           case PT_DESKTOP:
1326             uSize = 0;
1327             break;
1328           case PT_SPECIAL:
1329           case PT_MYCOMP:
1330             uSize = 2 + 2 + sizeof(GUID);
1331             break;
1332           case PT_DRIVE:
1333             uSize = 2 + 23;
1334             break;
1335           case PT_FOLDER:
1336           case PT_VALUE:
1337             uSize = 2 + 12 + uInSize;
1338             break;
1339           default:
1340             FIXME("can't create type: 0x%08x\n",type);
1341             return NULL;
1342         }
1343
1344         if(!(pidlOut = SHAlloc(uSize + 2))) return NULL;
1345         ZeroMemory(pidlOut, uSize + 2);
1346         pidlOut->mkid.cb = uSize;
1347
1348         switch (type)
1349         {
1350           case PT_DESKTOP:
1351             TRACE("- create Desktop\n");
1352             break;
1353
1354           case PT_SPECIAL:
1355           case PT_MYCOMP:
1356             pData =_ILGetDataPointer(pidlOut);
1357             pData->type = type;
1358             memcpy(&(pData->u.mycomp.guid), pIn, uInSize);
1359             TRACE("-- create GUID-pidl %s\n", debugstr_guid(&(pData->u.mycomp.guid)));
1360             break;
1361
1362           case PT_DRIVE:
1363             pData =_ILGetDataPointer(pidlOut);
1364             pData->type = type;
1365             pszDest = _ILGetTextPointer(pidlOut);
1366             memcpy(pszDest, pIn, uInSize);
1367             TRACE("-- create Drive: %s\n",debugstr_a(pszDest));
1368             break;
1369
1370           case PT_FOLDER:
1371           case PT_VALUE:
1372             pData =_ILGetDataPointer(pidlOut);
1373             pData->type = type;
1374             pszDest =  _ILGetTextPointer(pidlOut);
1375             memcpy(pszDest, pIn, uInSize);
1376             TRACE("-- create Value: %s\n",debugstr_a(pszDest));
1377             break;
1378         }
1379
1380         pidlTemp = ILGetNext(pidlOut);
1381         if (pidlTemp)
1382           pidlTemp->mkid.cb = 0x00;
1383
1384         TRACE("-- (pidl=%p, size=%u)\n", pidlOut, uSize);
1385         return pidlOut;
1386 }
1387
1388 /**************************************************************************
1389  *  _ILGetDrive()
1390  *
1391  *  Gets the text for the drive eg. 'c:\'
1392  *
1393  * RETURNS
1394  *  strlen (lpszText)
1395  */
1396 DWORD _ILGetDrive(LPCITEMIDLIST pidl,LPSTR pOut, UINT uSize)
1397 {       TRACE("(%p,%p,%u)\n",pidl,pOut,uSize);
1398
1399         if(_ILIsMyComputer(pidl))
1400           pidl = ILGetNext(pidl);
1401
1402         if (pidl && _ILIsDrive(pidl))
1403           return _ILSimpleGetText(pidl, pOut, uSize);
1404
1405         return 0;
1406 }
1407
1408 /**************************************************************************
1409  *
1410  *      ### 2. section testing pidls ###
1411  *
1412  **************************************************************************
1413  *  _ILIsDesktop()
1414  *  _ILIsMyComputer()
1415  *  _ILIsSpecialFolder()
1416  *  _ILIsDrive()
1417  *  _ILIsFolder()
1418  *  _ILIsValue()
1419  *  _ILIsPidlSimple()
1420  */
1421 BOOL _ILIsDesktop(LPCITEMIDLIST pidl)
1422 {       TRACE("(%p)\n",pidl);
1423         return pidl && pidl->mkid.cb  ? 0 : 1;
1424 }
1425
1426 BOOL _ILIsMyComputer(LPCITEMIDLIST pidl)
1427 {
1428         REFIID iid = _ILGetGUIDPointer(pidl);
1429
1430         TRACE("(%p)\n",pidl);
1431
1432         if (iid)
1433           return IsEqualIID(iid, &CLSID_MyComputer);
1434         return FALSE;
1435 }
1436
1437 BOOL _ILIsSpecialFolder (LPCITEMIDLIST pidl)
1438 {
1439         LPPIDLDATA lpPData = _ILGetDataPointer(pidl);
1440         TRACE("(%p)\n",pidl);
1441         return (pidl && ( (lpPData && (PT_MYCOMP== lpPData->type || PT_SPECIAL== lpPData->type)) ||
1442                           (pidl && pidl->mkid.cb == 0x00)
1443                         ));
1444 }
1445
1446 BOOL _ILIsDrive(LPCITEMIDLIST pidl)
1447 {       LPPIDLDATA lpPData = _ILGetDataPointer(pidl);
1448         TRACE("(%p)\n",pidl);
1449         return (pidl && lpPData && (PT_DRIVE == lpPData->type ||
1450                                     PT_DRIVE1 == lpPData->type ||
1451                                     PT_DRIVE2 == lpPData->type ||
1452                                     PT_DRIVE3 == lpPData->type));
1453 }
1454
1455 BOOL _ILIsFolder(LPCITEMIDLIST pidl)
1456 {       LPPIDLDATA lpPData = _ILGetDataPointer(pidl);
1457         TRACE("(%p)\n",pidl);
1458         return (pidl && lpPData && (PT_FOLDER == lpPData->type || PT_FOLDER1 == lpPData->type));
1459 }
1460
1461 BOOL _ILIsValue(LPCITEMIDLIST pidl)
1462 {       LPPIDLDATA lpPData = _ILGetDataPointer(pidl);
1463         TRACE("(%p)\n",pidl);
1464         return (pidl && lpPData && PT_VALUE == lpPData->type);
1465 }
1466
1467 /**************************************************************************
1468  *      _ILIsPidlSimple
1469  */
1470 BOOL _ILIsPidlSimple ( LPCITEMIDLIST pidl)
1471 {
1472         BOOL ret = TRUE;
1473
1474         if(! _ILIsDesktop(pidl))        /* pidl=NULL or mkid.cb=0 */
1475         {
1476           WORD len = pidl->mkid.cb;
1477           LPCITEMIDLIST pidlnext = (LPCITEMIDLIST) (((LPBYTE)pidl) + len );
1478           if (pidlnext->mkid.cb)
1479             ret = FALSE;
1480         }
1481
1482         TRACE("%s\n", ret ? "Yes" : "No");
1483         return ret;
1484 }
1485
1486 /**************************************************************************
1487  *
1488  *      ### 3. section getting values from pidls ###
1489  */
1490
1491  /**************************************************************************
1492  *  _ILSimpleGetText
1493  *
1494  * gets the text for the first item in the pidl (eg. simple pidl)
1495  *
1496  * returns the length of the string
1497  */
1498 DWORD _ILSimpleGetText (LPCITEMIDLIST pidl, LPSTR szOut, UINT uOutSize)
1499 {
1500         DWORD           dwReturn=0;
1501         LPSTR           szSrc;
1502         GUID const *    riid;
1503         char szTemp[MAX_PATH];
1504
1505         TRACE("(%p %p %x)\n",pidl,szOut,uOutSize);
1506
1507         if (!pidl) return 0;
1508
1509         if (szOut)
1510           *szOut = 0;
1511
1512         if (_ILIsDesktop(pidl))
1513         {
1514          /* desktop */
1515           if (HCR_GetClassNameA(&CLSID_ShellDesktop, szTemp, MAX_PATH))
1516           {
1517             if (szOut)
1518               lstrcpynA(szOut, szTemp, uOutSize);
1519
1520             dwReturn = strlen (szTemp);
1521           }
1522         }
1523         else if (( szSrc = _ILGetTextPointer(pidl) ))
1524         {
1525           /* filesystem */
1526           if (szOut)
1527             lstrcpynA(szOut, szSrc, uOutSize);
1528
1529           dwReturn = strlen(szSrc);
1530         }
1531         else if (( riid = _ILGetGUIDPointer(pidl) ))
1532         {
1533           /* special folder */
1534           if ( HCR_GetClassNameA(riid, szTemp, MAX_PATH) )
1535           {
1536             if (szOut)
1537               lstrcpynA(szOut, szTemp, uOutSize);
1538
1539             dwReturn = strlen (szTemp);
1540           }
1541         }
1542         else
1543         {
1544           ERR("-- no text\n");
1545         }
1546
1547         TRACE("-- (%p=%s 0x%08lx)\n",szOut,debugstr_a(szOut),dwReturn);
1548         return dwReturn;
1549 }
1550
1551 /**************************************************************************
1552  *
1553  *      ### 4. getting pointers to parts of pidls ###
1554  *
1555  **************************************************************************
1556  *  _ILGetDataPointer()
1557  */
1558 LPPIDLDATA _ILGetDataPointer(LPITEMIDLIST pidl)
1559 {
1560         if(pidl && pidl->mkid.cb != 0x00)
1561           return (LPPIDLDATA) &(pidl->mkid.abID);
1562         return NULL;
1563 }
1564
1565 /**************************************************************************
1566  *  _ILGetTextPointer()
1567  * gets a pointer to the long filename string stored in the pidl
1568  */
1569 LPSTR _ILGetTextPointer(LPCITEMIDLIST pidl)
1570 {/*     TRACE(pidl,"(pidl%p)\n", pidl);*/
1571
1572         LPPIDLDATA pdata =_ILGetDataPointer(pidl);
1573
1574         if (pdata)
1575         {
1576           switch (pdata->type)
1577           {
1578             case PT_MYCOMP:
1579             case PT_SPECIAL:
1580               return NULL;
1581
1582             case PT_DRIVE:
1583             case PT_DRIVE1:
1584             case PT_DRIVE2:
1585             case PT_DRIVE3:
1586               return (LPSTR)&(pdata->u.drive.szDriveName);
1587
1588             case PT_FOLDER:
1589             case PT_FOLDER1:
1590             case PT_VALUE:
1591             case PT_IESPECIAL1:
1592             case PT_IESPECIAL2:
1593               return (LPSTR)&(pdata->u.file.szNames);
1594
1595             case PT_WORKGRP:
1596             case PT_COMP:
1597             case PT_NETWORK:
1598             case PT_SHARE:
1599               return (LPSTR)&(pdata->u.network.szNames);
1600           }
1601         }
1602         return NULL;
1603 }
1604
1605 /**************************************************************************
1606  *  _ILGetSTextPointer()
1607  * gets a pointer to the short filename string stored in the pidl
1608  */
1609 LPSTR _ILGetSTextPointer(LPCITEMIDLIST pidl)
1610 {/*     TRACE(pidl,"(pidl%p)\n", pidl);*/
1611
1612         LPPIDLDATA pdata =_ILGetDataPointer(pidl);
1613
1614         if (pdata)
1615         {
1616           switch (pdata->type)
1617           {
1618             case PT_FOLDER:
1619             case PT_VALUE:
1620             case PT_IESPECIAL1:
1621             case PT_IESPECIAL2:
1622               return (LPSTR)(pdata->u.file.szNames + strlen (pdata->u.file.szNames) + 1);
1623
1624             case PT_WORKGRP:
1625               return (LPSTR)(pdata->u.network.szNames + strlen (pdata->u.network.szNames) + 1);
1626           }
1627         }
1628         return NULL;
1629 }
1630
1631 /**************************************************************************
1632  * _ILGetGUIDPointer()
1633  *
1634  * returns reference to guid stored in some pidls
1635  */
1636 REFIID _ILGetGUIDPointer(LPCITEMIDLIST pidl)
1637 {
1638         LPPIDLDATA pdata =_ILGetDataPointer(pidl);
1639
1640         TRACE("%p\n", pidl);
1641
1642         if (pdata)
1643         {
1644           TRACE("pdata->type 0x%04x\n", pdata->type);
1645           switch (pdata->type)
1646           {
1647             case PT_SPECIAL:
1648             case PT_MYCOMP:
1649               return (REFIID) &(pdata->u.mycomp.guid);
1650
1651             default:
1652                 TRACE("Unknown pidl type 0x%04x\n", pdata->type);
1653                 break;
1654           }
1655         }
1656         return NULL;
1657 }
1658
1659 /*************************************************************************
1660  * _ILGetFileDateTime
1661  *
1662  * Given the ItemIdList, get the FileTime
1663  *
1664  * PARAMS
1665  *      pidl        [I] The ItemIDList
1666  *      pFt         [I] the resulted FILETIME of the file
1667  *
1668  * RETURNS
1669  *     True if Successful
1670  *
1671  * NOTES
1672  *
1673  */
1674 BOOL _ILGetFileDateTime(LPCITEMIDLIST pidl, FILETIME *pFt)
1675 {
1676     LPPIDLDATA pdata =_ILGetDataPointer(pidl);
1677
1678     if(! pdata) return FALSE;
1679
1680     switch (pdata->type)
1681     {
1682         case PT_FOLDER:
1683             DosDateTimeToFileTime(pdata->u.folder.uFileDate, pdata->u.folder.uFileTime, pFt);
1684             break;
1685         case PT_VALUE:
1686             DosDateTimeToFileTime(pdata->u.file.uFileDate, pdata->u.file.uFileTime, pFt);
1687             break;
1688         default:
1689             return FALSE;
1690     }
1691     return TRUE;
1692 }
1693
1694 BOOL _ILGetFileDate (LPCITEMIDLIST pidl, LPSTR pOut, UINT uOutSize)
1695 {
1696         FILETIME ft,lft;
1697         SYSTEMTIME time;
1698         BOOL ret;
1699
1700         if (_ILGetFileDateTime( pidl, &ft )) {
1701             FileTimeToLocalFileTime(&ft, &lft);
1702             FileTimeToSystemTime (&lft, &time);
1703             ret = GetDateFormatA(LOCALE_USER_DEFAULT,DATE_SHORTDATE,&time, NULL,  pOut, uOutSize);
1704         } else {
1705             pOut[0] = '\0';
1706             ret = FALSE;
1707         }
1708         return ret;
1709
1710 }
1711
1712 /*************************************************************************
1713  * _ILGetFileSize
1714  *
1715  * Given the ItemIdList, get the FileSize
1716  *
1717  * PARAMS
1718  *      pidl    [I] The ItemIDList
1719  *      pOut    [I] The buffer to save the result
1720  *      uOutsize [I] The size of the buffer
1721  *
1722  * RETURNS
1723  *     The FileSize
1724  *
1725  * NOTES
1726  *      pOut can be null when no string is needed
1727  *
1728  */
1729 DWORD _ILGetFileSize (LPCITEMIDLIST pidl, LPSTR pOut, UINT uOutSize)
1730 {
1731         LPPIDLDATA pdata =_ILGetDataPointer(pidl);
1732         DWORD dwSize;
1733
1734         if(! pdata) return 0;
1735
1736         switch (pdata->type)
1737         {
1738           case PT_VALUE:
1739             dwSize = pdata->u.file.dwFileSize;
1740             if (pOut) StrFormatByteSizeA(dwSize, pOut, uOutSize);
1741             return dwSize;
1742         }
1743         if (pOut) *pOut = 0x00;
1744         return 0;
1745 }
1746
1747 BOOL _ILGetExtension (LPCITEMIDLIST pidl, LPSTR pOut, UINT uOutSize)
1748 {
1749         char szTemp[MAX_PATH];
1750         const char * pPoint;
1751         LPITEMIDLIST  pidlTemp=pidl;
1752
1753         TRACE("pidl=%p\n",pidl);
1754
1755         if (!pidl) return FALSE;
1756
1757         pidlTemp = ILFindLastID(pidl);
1758
1759         if (!_ILIsValue(pidlTemp)) return FALSE;
1760         if (!_ILSimpleGetText(pidlTemp, szTemp, MAX_PATH)) return FALSE;
1761
1762         pPoint = PathFindExtensionA(szTemp);
1763
1764         if (! *pPoint) return FALSE;
1765
1766         pPoint++;
1767         lstrcpynA(pOut, pPoint, uOutSize);
1768         TRACE("%s\n",pOut);
1769
1770         return TRUE;
1771 }
1772
1773 /*************************************************************************
1774  * _ILGetFileType
1775  *
1776  * Given the ItemIdList, get the file type description
1777  *
1778  * PARAMS
1779  *      pidl        [I] The ItemIDList (simple)
1780  *      pOut        [I] The buffer to save the result
1781  *      uOutsize    [I] The size of the buffer
1782  *
1783  * RETURNS
1784  *      nothing
1785  *
1786  * NOTES
1787  *      This function copies as much as possible into the buffer.
1788  */
1789 void _ILGetFileType(LPCITEMIDLIST pidl, LPSTR pOut, UINT uOutSize)
1790 {
1791         if(_ILIsValue(pidl))
1792         {
1793           char sTemp[64];
1794           if(uOutSize > 0)
1795           {
1796             pOut[0] = 0;
1797           }
1798           if (_ILGetExtension (pidl, sTemp, 64))
1799           {
1800             if (!( HCR_MapTypeToValueA(sTemp, sTemp, 64, TRUE)
1801                 && HCR_MapTypeToValueA(sTemp, pOut, uOutSize, FALSE )))
1802             {
1803               lstrcpynA (pOut, sTemp, uOutSize - 6);
1804               strcat (pOut, "-file");
1805             }
1806           }
1807         }
1808         else
1809         {
1810           lstrcpynA(pOut, "Folder", uOutSize);
1811         }
1812 }
1813
1814 /*************************************************************************
1815  * _ILGetFileAttributes
1816  *
1817  * Given the ItemIdList, get the Attrib string format
1818  *
1819  * PARAMS
1820  *      pidl        [I] The ItemIDList
1821  *      pOut        [I] The buffer to save the result
1822  *      uOutsize    [I] The size of the Buffer
1823  *
1824  * RETURNS
1825  *     Attributes
1826  *
1827  * FIXME
1828  *  return value 0 in case of error is a valid return value
1829  *
1830  */
1831 DWORD _ILGetFileAttributes(LPCITEMIDLIST pidl, LPSTR pOut, UINT uOutSize)
1832 {
1833         LPPIDLDATA pData =_ILGetDataPointer(pidl);
1834         WORD wAttrib = 0;
1835         int i;
1836
1837         if(! pData) return 0;
1838
1839         switch(pData->type)
1840         {
1841           case PT_FOLDER:
1842             wAttrib = pData->u.folder.uFileAttribs;
1843             break;
1844           case PT_VALUE:
1845             wAttrib = pData->u.file.uFileAttribs;
1846             break;
1847         }
1848
1849         if(uOutSize >= 6)
1850         {
1851           i=0;
1852           if(wAttrib & FILE_ATTRIBUTE_READONLY)
1853           {
1854             pOut[i++] = 'R';
1855           }
1856           if(wAttrib & FILE_ATTRIBUTE_HIDDEN)
1857           {
1858             pOut[i++] = 'H';
1859           }
1860           if(wAttrib & FILE_ATTRIBUTE_SYSTEM)
1861           {
1862             pOut[i++] = 'S';
1863           }
1864           if(wAttrib & FILE_ATTRIBUTE_ARCHIVE)
1865           {
1866             pOut[i++] = 'A';
1867           }
1868           if(wAttrib & FILE_ATTRIBUTE_COMPRESSED)
1869           {
1870             pOut[i++] = 'C';
1871           }
1872           pOut[i] = 0x00;
1873         }
1874         return wAttrib;
1875 }
1876
1877 /*************************************************************************
1878 * ILFreeaPidl
1879 *
1880 * free a aPidl struct
1881 */
1882 void _ILFreeaPidl(LPITEMIDLIST * apidl, UINT cidl)
1883 {
1884         UINT   i;
1885
1886         if (apidl)
1887         {
1888           for (i = 0; i < cidl; i++) SHFree(apidl[i]);
1889           SHFree(apidl);
1890         }
1891 }
1892
1893 /*************************************************************************
1894 * ILCopyaPidl
1895 *
1896 * copies an aPidl struct
1897 */
1898 LPITEMIDLIST *  _ILCopyaPidl(LPITEMIDLIST * apidlsrc, UINT cidl)
1899 {
1900         UINT i;
1901         LPITEMIDLIST * apidldest = (LPITEMIDLIST*)SHAlloc(cidl * sizeof(LPITEMIDLIST));
1902         if(!apidlsrc) return NULL;
1903
1904         for (i = 0; i < cidl; i++)
1905           apidldest[i] = ILClone(apidlsrc[i]);
1906
1907         return apidldest;
1908 }
1909
1910 /*************************************************************************
1911 * _ILCopyCidaToaPidl
1912 *
1913 * creates aPidl from CIDA
1914 */
1915 LPITEMIDLIST * _ILCopyCidaToaPidl(LPITEMIDLIST* pidl, LPIDA cida)
1916 {
1917         UINT i;
1918         LPITEMIDLIST * dst = (LPITEMIDLIST*)SHAlloc(cida->cidl * sizeof(LPITEMIDLIST));
1919
1920         if(!dst) return NULL;
1921
1922         if (pidl)
1923           *pidl = ILClone((LPITEMIDLIST)(&((LPBYTE)cida)[cida->aoffset[0]]));
1924
1925         for (i = 0; i < cida->cidl; i++)
1926           dst[i] = ILClone((LPITEMIDLIST)(&((LPBYTE)cida)[cida->aoffset[i + 1]]));
1927
1928         return dst;
1929 }