reactos/base/shell/explorer/shell/shellfs.cpp

   1 /*
   2  * Copyright 2003, 2004, 2005, 2006 Martin Fuchs
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  17  */
  18
  19
  20  //
  21  // Explorer clone
  22  //
  23  // shellfs.cpp
  24  //
  25  // Martin Fuchs, 23.07.2003
  26  //
  27
  28
  29 #include <precomp.h>
  30
  31 //#include "shellfs.h"
  32 //#include "winfs.h"
  33
  34 #include <shlwapi.h>
  35
  36
  37 bool ShellDirectory::fill_w32fdata_shell(LPCITEMIDLIST pidl, SFGAOF attribs, WIN32_FIND_DATA* pw32fdata, BY_HANDLE_FILE_INFORMATION* pbhfi, bool do_access)
  38 {
  39         CONTEXT("ShellDirectory::fill_w32fdata_shell()");
  40
  41         bool bhfi_valid = false;
  42
  43         if (do_access && !( (attribs&SFGAO_FILESYSTEM) && SUCCEEDED(
  44                                 SHGetDataFromIDList(_folder, pidl, SHGDFIL_FINDDATA, pw32fdata, sizeof(WIN32_FIND_DATA))) )) {
  45                 WIN32_FILE_ATTRIBUTE_DATA fad;
  46                 IDataObject* pDataObj;
  47
  48                 STGMEDIUM medium = {0, {0}, 0};
  49                 FORMATETC fmt = {g_Globals._cfStrFName, 0, DVASPECT_CONTENT, -1, TYMED_HGLOBAL};
  50
  51                 HRESULT hr = _folder->GetUIObjectOf(0, 1, &pidl, IID_IDataObject, 0, (LPVOID*)&pDataObj);
  52
  53                 if (SUCCEEDED(hr)) {
  54                         hr = pDataObj->GetData(&fmt, &medium);
  55
  56                         pDataObj->Release();
  57
  58                         if (SUCCEEDED(hr)) {
  59                                 LPCTSTR path = (LPCTSTR)GlobalLock(medium.UNION_MEMBER(hGlobal));
  60
  61                                 if (path) {
  62                                          // fill with drive names "C:", ...
  63                                         assert(_tcslen(path) < GlobalSize(medium.UNION_MEMBER(hGlobal)));
  64                                         _tcscpy(pw32fdata->cFileName, path);
  65
  66                                         UINT sem_org = SetErrorMode(SEM_FAILCRITICALERRORS);
  67
  68                                         if (GetFileAttributesEx(path, GetFileExInfoStandard, &fad)) {
  69                                                 pw32fdata->dwFileAttributes = fad.dwFileAttributes;
  70                                                 pw32fdata->ftCreationTime = fad.ftCreationTime;
  71                                                 pw32fdata->ftLastAccessTime = fad.ftLastAccessTime;
  72                                                 pw32fdata->ftLastWriteTime = fad.ftLastWriteTime;
  73
  74                                                 if (!(fad.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)) {
  75                                                          // copy file size
  76                                                         pw32fdata->nFileSizeLow = fad.nFileSizeLow;
  77                                                         pw32fdata->nFileSizeHigh = fad.nFileSizeHigh;
  78                                                 } else {
  79                                                          // ignore FILE_ATTRIBUTE_HIDDEN attribute of NTFS drives - this would hide those drives in ShellBrowser
  80                                                         if (pw32fdata->dwFileAttributes & FILE_ATTRIBUTE_HIDDEN) {
  81                                                                 if (path[1]==':' && path[2]=='\\' && !path[3])  // Is it a drive path?
  82                                                                         pw32fdata->dwFileAttributes &= ~FILE_ATTRIBUTE_HIDDEN;
  83                                                         }
  84                                                 }
  85                                         }
  86
  87                                         HANDLE hFile = CreateFile(path, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE|FILE_SHARE_DELETE,
  88                                                                                                 0, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, 0);
  89
  90                                         if (hFile != INVALID_HANDLE_VALUE) {
  91                                                 if (GetFileInformationByHandle(hFile, pbhfi))
  92                                                         bhfi_valid = true;
  93
  94                                                 CloseHandle(hFile);
  95                                         }
  96
  97                                         SetErrorMode(sem_org);
  98
  99                                         GlobalUnlock(medium.UNION_MEMBER(hGlobal));
 100                                         GlobalFree(medium.UNION_MEMBER(hGlobal));
 101                                 }
 102                         }
 103                 }
 104         }
 105
 106         if (!do_access || !(attribs&SFGAO_FILESYSTEM))  // Archiv files should not be displayed as folders in explorer view.
 107                 if (attribs & (SFGAO_FOLDER|SFGAO_HASSUBFOLDER))
 108                         pw32fdata->dwFileAttributes |= FILE_ATTRIBUTE_DIRECTORY;
 109
 110         if (attribs & SFGAO_READONLY)
 111                 pw32fdata->dwFileAttributes |= FILE_ATTRIBUTE_READONLY;
 112
 113         if (attribs & SFGAO_COMPRESSED)
 114                 pw32fdata->dwFileAttributes |= FILE_ATTRIBUTE_COMPRESSED;
 115
 116         return bhfi_valid;
 117 }
 118
 119
 120 ShellPath ShellEntry::create_absolute_pidl() const
 121 {
 122         CONTEXT("ShellEntry::create_absolute_pidl()");
 123
 124         if (_up)
 125         {
 126                 if (_up->_etype == ET_SHELL) {
 127                         ShellDirectory* dir = static_cast<ShellDirectory*>(_up);
 128
 129                         if (dir->_pidl->mkid.cb)        // Caching of absolute PIDLs could enhance performance.
 130                                 return _pidl.create_absolute_pidl(dir->create_absolute_pidl());
 131                 } else
 132                         return _pidl.create_absolute_pidl(_up->create_absolute_pidl());
 133         }
 134         return _pidl;
 135 }
 136
 137
 138  // get full path of a shell entry
 139 bool ShellEntry::get_path(PTSTR path, size_t path_count) const
 140 {
 141         if (!path || path_count==0)
 142                 return false;
 143 /*
 144         path[0] = TEXT('\0');
 145
 146         if (FAILED(path_from_pidl(get_parent_folder(), &*_pidl, path, path_count)))
 147                 return false;
 148 */
 149         FileSysShellPath fs_path(create_absolute_pidl());
 150         LPCTSTR ret = fs_path;
 151
 152         if (ret) {
 153                 lstrcpyn(path, ret, path_count);
 154                 return true;
 155         } else
 156                 return false;
 157 }
 158
 159
 160  // get full path of a shell folder
 161 bool ShellDirectory::get_path(PTSTR path, size_t path_count) const
 162 {
 163         CONTEXT("ShellDirectory::get_path()");
 164
 165         if (!path || path_count==0)
 166                 return false;
 167
 168         path[0] = TEXT('\0');
 169
 170         if (_folder.empty())
 171                 return false;
 172
 173         SFGAOF attribs = SFGAO_FILESYSTEM;
 174
 175         // Split pidl into current and parent folder PIDLs
 176         ShellPath pidlParent, pidlFolder;
 177         _pidl.split(pidlParent, pidlFolder);
 178
 179         if (FAILED(const_cast<ShellFolder&>(_folder)->GetAttributesOf(1, (LPCITEMIDLIST*)&pidlFolder, &attribs)))
 180                 return false;
 181
 182         if (!(attribs & SFGAO_FILESYSTEM))
 183                 return false;
 184
 185         if (FAILED(path_from_pidl(get_parent_folder(), &*_pidl, path, path_count)))
 186                 return false;
 187
 188         return true;
 189 }
 190
 191
 192 BOOL ShellEntry::launch_entry(HWND hwnd, UINT nCmdShow)
 193 {
 194         CONTEXT("ShellEntry::launch_entry()");
 195
 196         SHELLEXECUTEINFO shexinfo;
 197
 198         shexinfo.cbSize = sizeof(SHELLEXECUTEINFO);
 199         shexinfo.fMask = SEE_MASK_INVOKEIDLIST; // SEE_MASK_IDLIST is also possible.
 200         shexinfo.hwnd = hwnd;
 201         shexinfo.lpVerb = NULL;
 202         shexinfo.lpFile = NULL;
 203         shexinfo.lpParameters = NULL;
 204         shexinfo.lpDirectory = NULL;
 205         shexinfo.nShow = nCmdShow;
 206
 207         ShellPath shell_path = create_absolute_pidl();
 208         shexinfo.lpIDList = &*shell_path;
 209
 210          // add PIDL to the recent file list
 211         SHAddToRecentDocs(SHARD_PIDL, shexinfo.lpIDList);
 212
 213         BOOL ret = TRUE;
 214
 215         if (!ShellExecuteEx(&shexinfo)) {
 216                 display_error(hwnd, GetLastError());
 217                 ret = FALSE;
 218         }
 219
 220         return ret;
 221 }
 222
 223
 224 HRESULT ShellEntry::do_context_menu(HWND hwnd, const POINT& pptScreen, CtxMenuInterfaces& cm_ifs)
 225 {
 226         ShellDirectory* dir = static_cast<ShellDirectory*>(_up);
 227
 228         ShellFolder folder = dir? dir->_folder: GetDesktopFolder();
 229         LPCITEMIDLIST pidl = _pidl;
 230
 231         return ShellFolderContextMenu(folder, hwnd, 1, &pidl, pptScreen.x, pptScreen.y, cm_ifs);
 232 }
 233
 234
 235 HRESULT ShellEntry::GetUIObjectOf(HWND hWnd, REFIID riid, LPVOID* ppvOut)
 236 {
 237         LPCITEMIDLIST pidl = _pidl;
 238
 239         return get_parent_folder()->GetUIObjectOf(hWnd, 1, &pidl, riid, NULL, ppvOut);
 240 }
 241
 242
 243 ShellFolder Entry::get_shell_folder() const
 244 {
 245         return ShellFolder(create_absolute_pidl());
 246 }
 247
 248 ShellFolder ShellEntry::get_shell_folder() const
 249 {
 250         return get_parent_folder();
 251 }
 252
 253 ShellFolder ShellDirectory::get_shell_folder() const
 254 {
 255         return _folder;
 256 }
 257
 258
 259 void ShellDirectory::read_directory(int scan_flags)
 260 {
 261         CONTEXT("ShellDirectory::read_directory()");
 262
 263         int level = _level + 1;
 264
 265         Entry* first_entry = NULL;
 266         Entry* last = NULL;
 267
 268         /*if (_folder.empty())
 269                 return;*/
 270
 271 #ifndef _NO_WIN_FS
 272         TCHAR buffer[_MAX_PATH+_MAX_FNAME];
 273
 274         if (!(scan_flags&SCAN_NO_FILESYSTEM) && get_path(buffer, COUNTOF(buffer)) && _tcsncmp(buffer,TEXT("::{"),3)) {
 275                 Entry* entry = NULL;    // eliminate useless GCC warning by initializing entry
 276
 277                 LPTSTR p = buffer + _tcslen(buffer);
 278
 279                 lstrcpy(p, TEXT("\\*"));
 280
 281                 WIN32_FIND_DATA w32fd;
 282                 HANDLE hFind = FindFirstFile(buffer, &w32fd);
 283
 284                 if (hFind != INVALID_HANDLE_VALUE) {
 285                         do {
 286                                  // ignore hidden files (usefull in the start menu)
 287                                 if (w32fd.dwFileAttributes & FILE_ATTRIBUTE_HIDDEN)
 288                                         continue;
 289
 290                                  // ignore directory entries "." and ".."
 291                                 if ((w32fd.dwFileAttributes&FILE_ATTRIBUTE_DIRECTORY) &&
 292                                         w32fd.cFileName[0]==TEXT('.') &&
 293                                         (w32fd.cFileName[1]==TEXT('\0') ||
 294                                         (w32fd.cFileName[1]==TEXT('.') && w32fd.cFileName[2]==TEXT('\0'))))
 295                                         continue;
 296
 297                                 lstrcpy(p+1, w32fd.cFileName);
 298
 299                                 if (w32fd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
 300                                         entry = new WinDirectory(this, buffer);
 301                                 else
 302                                         entry = new WinEntry(this);
 303
 304                                 if (!first_entry)
 305                                         first_entry = entry;
 306
 307                                 if (last)
 308                                         last->_next = entry;
 309
 310                                 memcpy(&entry->_data, &w32fd, sizeof(WIN32_FIND_DATA));
 311
 312                                 entry->_level = level;
 313
 314                                 if (!(scan_flags & SCAN_DONT_ACCESS)) {
 315                                         HANDLE hFile = CreateFile(buffer, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE|FILE_SHARE_DELETE,
 316                                                                                                 0, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, 0);
 317
 318                                         if (hFile != INVALID_HANDLE_VALUE) {
 319                                                 if (GetFileInformationByHandle(hFile, &entry->_bhfi))
 320                                                         entry->_bhfi_valid = true;
 321
 322                                                 if (ScanNTFSStreams(entry, hFile))
 323                                                         entry->_scanned = true; // There exist named NTFS sub-streams in this file.
 324
 325                                                 CloseHandle(hFile);
 326                                         }
 327                                 }
 328
 329                                  // set file type name
 330                                 LPCTSTR ext = g_Globals._ftype_mgr.set_type(entry);
 331
 332                                 DWORD attribs = SFGAO_FILESYSTEM;
 333
 334                                 if (w32fd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
 335                                         attribs |= SFGAO_FOLDER|SFGAO_HASSUBFOLDER;
 336
 337                                 if (w32fd.dwFileAttributes & FILE_ATTRIBUTE_READONLY)
 338                                         attribs |= SFGAO_READONLY;
 339
 340                                 //if (w32fd.dwFileAttributes & FILE_ATTRIBUTE_HIDDEN)
 341                                 //      attribs |= SFGAO_HIDDEN;
 342
 343                                 if (w32fd.dwFileAttributes & FILE_ATTRIBUTE_COMPRESSED)
 344                                         attribs |= SFGAO_COMPRESSED;
 345
 346                                 if (ext && !_tcsicmp(ext, _T(".lnk"))) {
 347                                         attribs |= SFGAO_LINK;
 348                                         w32fd.dwFileAttributes |= ATTRIBUTE_SYMBOLIC_LINK;
 349                                 }
 350
 351                                 entry->_shell_attribs = attribs;
 352
 353                                 if (w32fd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
 354                                         entry->_icon_id = ICID_FOLDER;
 355                                 else if (!(scan_flags & SCAN_DONT_EXTRACT_ICONS))
 356                                         entry->_icon_id = entry->safe_extract_icon();   // Assume small icon, we can extract the large icon later on demand.
 357
 358                                 last = entry;
 359                         } while(FindNextFile(hFind, &w32fd));
 360
 361                         FindClose(hFind);
 362                 }
 363         }
 364         else // SCAN_NO_FILESYSTEM
 365 #endif
 366         {
 367                 ShellItemEnumerator enumerator(_folder, SHCONTF_FOLDERS|SHCONTF_NONFOLDERS|SHCONTF_INCLUDEHIDDEN|SHCONTF_SHAREABLE|SHCONTF_STORAGE);
 368
 369                 TCHAR name[MAX_PATH];
 370                 TCHAR path[MAX_PATH];
 371                 HRESULT hr_next = S_OK;
 372
 373                 do {
 374 #define FETCH_ITEM_COUNT        32
 375                         LPITEMIDLIST pidls[FETCH_ITEM_COUNT];
 376                         ULONG cnt = 0;
 377
 378                         memset(pidls, 0, sizeof(pidls));
 379
 380                         hr_next = enumerator->Next(FETCH_ITEM_COUNT, pidls, &cnt);
 381
 382                         /* don't break yet now: Registry Explorer Plugin returns E_FAIL!
 383                         if (!SUCCEEDED(hr_next))
 384                                 break; */
 385
 386                         if (hr_next == S_FALSE)
 387                                 break;
 388
 389                         for(ULONG n=0; n<cnt; ++n) {
 390                                 WIN32_FIND_DATA w32fd;
 391                                 BY_HANDLE_FILE_INFORMATION bhfi;
 392                                 bool bhfi_valid = false;
 393
 394                                 memset(&w32fd, 0, sizeof(WIN32_FIND_DATA));
 395
 396                                 SFGAOF attribs_before = ~SFGAO_READONLY & ~SFGAO_VALIDATE;
 397                                 SFGAOF attribs = attribs_before;
 398                                 HRESULT hr = _folder->GetAttributesOf(1, (LPCITEMIDLIST*)&pidls[n], &attribs);
 399                                 bool removeable = false;
 400
 401                                 if (SUCCEEDED(hr) && attribs!=attribs_before) {
 402                                          // avoid accessing floppy drives when browsing "My Computer"
 403                                         if (attribs & SFGAO_REMOVABLE) {
 404                                                 attribs |= SFGAO_HASSUBFOLDER;
 405                                                 removeable = true;
 406                                         } else if (!(scan_flags & SCAN_DONT_ACCESS)) {
 407                                                 SFGAOF attribs2 = SFGAO_READONLY;
 408
 409                                                 HRESULT hr = _folder->GetAttributesOf(1, (LPCITEMIDLIST*)&pidls[n], &attribs2);
 410
 411                                                 if (SUCCEEDED(hr))
 412                                                         attribs |= attribs2;
 413                                         }
 414                                 } else
 415                                         attribs = 0;
 416
 417                                 bhfi_valid = fill_w32fdata_shell(pidls[n], attribs, &w32fd, &bhfi,
 418                                                                                                  !(scan_flags&SCAN_DONT_ACCESS) && !removeable);
 419
 420                                 try {
 421                                         Entry* entry = NULL;    // eliminate useless GCC warning by initializing entry
 422
 423                                         if (w32fd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
 424                                                 entry = new ShellDirectory(this, pidls[n], _hwnd);
 425                                         else
 426                                                 entry = new ShellEntry(this, pidls[n]);
 427
 428                                         if (!first_entry)
 429                                                 first_entry = entry;
 430
 431                                         if (last)
 432                                                 last->_next = entry;
 433
 434                                         memcpy(&entry->_data, &w32fd, sizeof(WIN32_FIND_DATA));
 435
 436                                         if (bhfi_valid)
 437                                                 memcpy(&entry->_bhfi, &bhfi, sizeof(BY_HANDLE_FILE_INFORMATION));
 438
 439                                          // store path in entry->_data.cFileName in case fill_w32fdata_shell() didn't already fill it
 440                                         if (!entry->_data.cFileName[0])
 441                                                 if (SUCCEEDED(path_from_pidl(_folder, pidls[n], path, COUNTOF(path))))
 442                                                         _tcscpy(entry->_data.cFileName, path);
 443
 444                                         if (SUCCEEDED(name_from_pidl(_folder, pidls[n], name, COUNTOF(name), SHGDN_INFOLDER|0x2000/*0x2000=SHGDN_INCLUDE_NONFILESYS*/))) {
 445                                                 if (!entry->_data.cFileName[0])
 446                                                         _tcscpy(entry->_data.cFileName, name);
 447                                                 else if (_tcscmp(entry->_display_name, name))
 448                                                         entry->_display_name = _tcsdup(name);   // store display name separate from file name; sort display by file name
 449                                         }
 450
 451                                         if (attribs & SFGAO_LINK)
 452                                                 w32fd.dwFileAttributes |= ATTRIBUTE_SYMBOLIC_LINK;
 453
 454                                         entry->_level = level;
 455                                         entry->_shell_attribs = attribs;
 456                                         entry->_bhfi_valid = bhfi_valid;
 457
 458                                          // set file type name
 459                                         g_Globals._ftype_mgr.set_type(entry);
 460
 461                                          // get icons for files and virtual objects
 462                                         if (!(entry->_data.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) ||
 463                                                 !(attribs & SFGAO_FILESYSTEM)) {
 464                                                 if (!(scan_flags & SCAN_DONT_EXTRACT_ICONS))
 465                                                         entry->_icon_id = entry->safe_extract_icon();   // Assume small icon, we can extract the large icon later on demand.
 466                                         } else if (entry->_data.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
 467                                                 entry->_icon_id = ICID_FOLDER;
 468                                         else
 469                                                 entry->_icon_id = ICID_NONE;    // don't try again later
 470
 471                                         last = entry;
 472                                 } catch(COMException& e) {
 473                                         HandleException(e, _hwnd);
 474                                 }
 475                         }
 476                 } while(SUCCEEDED(hr_next));
 477         }
 478
 479         if (last)
 480                 last->_next = NULL;
 481
 482         _down = first_entry;
 483         _scanned = true;
 484 }
 485
 486 const void* ShellDirectory::get_next_path_component(const void* p) const
 487 {
 488         LPITEMIDLIST pidl = (LPITEMIDLIST)p;
 489
 490         if (!pidl || !pidl->mkid.cb)
 491                 return NULL;
 492
 493          // go to next element
 494         pidl = (LPITEMIDLIST)((LPBYTE)pidl+pidl->mkid.cb);
 495
 496         return pidl;
 497 }
 498
 499 Entry* ShellDirectory::find_entry(const void* p)
 500 {
 501         LPITEMIDLIST pidl = (LPITEMIDLIST) p;
 502
 503          // handle special case of empty trailing id list entry
 504         if (!pidl->mkid.cb)
 505                 return this;
 506
 507         for(Entry*entry=_down; entry; entry=entry->_next)
 508                 if (entry->_etype == ET_SHELL) {
 509                         ShellEntry* se = static_cast<ShellEntry*>(entry);
 510
 511                         if (se->_pidl && se->_pidl->mkid.cb==pidl->mkid.cb && !memcmp(se->_pidl, pidl, se->_pidl->mkid.cb))
 512                                 return entry;
 513                 } else {
 514                         const ShellPath& sp = entry->create_absolute_pidl();
 515                         static DynamicFct<LPITEMIDLIST(WINAPI*)(LPCITEMIDLIST)> ILFindLastID(TEXT("SHELL32"), "ILFindLastID");
 516
 517                         if (ILFindLastID) {
 518                                 LPCITEMIDLIST entry_pidl = (*ILFindLastID)(sp);
 519
 520                                 if (entry_pidl && entry_pidl->mkid.cb==pidl->mkid.cb && !memcmp(entry_pidl, pidl, entry_pidl->mkid.cb))
 521                                         return entry;
 522                         }
 523                 }
 524
 525         return NULL;
 526 }
 527
 528 int ShellDirectory::extract_icons(ICONCACHE_FLAGS flags)
 529 {
 530         int cnt = 0;
 531
 532         for(Entry*entry=_down; entry; entry=entry->_next)
 533                 if (entry->_icon_id == ICID_UNKNOWN) {
 534                         entry->_icon_id = entry->extract_icon(flags);
 535
 536                         if (entry->_icon_id != ICID_NONE)
 537                                 ++cnt;
 538                 }
 539
 540         return cnt;
 541 }