reactos/win32ss/user/user32/misc/misc.c

   1 /*
   2  *  ReactOS kernel
   3  *  Copyright (C) 1998, 1999, 2000, 2001 ReactOS Team
   4  *
   5  *  This program is free software; you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation; either version 2 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with this program; if not, write to the Free Software
  17  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18  */
  19 /*
  20  * PROJECT:         ReactOS user32.dll
  21  * FILE:            lib/user32/misc/misc.c
  22  * PURPOSE:         Misc
  23  * PROGRAMMER:      Thomas Weidenmueller (w3seek@users.sourceforge.net)
  24  * UPDATE HISTORY:
  25  *      19-11-2003  Created
  26  */
  27
  28 /* INCLUDES ******************************************************************/
  29
  30 #include <user32.h>
  31
  32 #include <wine/debug.h>
  33
  34 WINE_DEFAULT_DEBUG_CHANNEL(user32);
  35
  36 /* FUNCTIONS *****************************************************************/
  37
  38 /*
  39  * @implemented
  40  */
  41 BOOL
  42 WINAPI
  43 RegisterLogonProcess(DWORD dwProcessId, BOOL bRegister)
  44 {
  45   return NtUserxRegisterLogonProcess(dwProcessId,bRegister);
  46 }
  47
  48 /*
  49  * @implemented
  50  */
  51 BOOL
  52 WINAPI
  53 SetLogonNotifyWindow (HWND Wnd, HWINSTA WinSta)
  54 {
  55   /* Maybe we should call NtUserSetLogonNotifyWindow and let that one inform CSRSS??? */
  56   CSR_API_MESSAGE Request;
  57   ULONG CsrRequest;
  58   NTSTATUS Status;
  59
  60   CsrRequest = MAKE_CSR_API(SET_LOGON_NOTIFY_WINDOW, CSR_GUI);
  61   Request.Data.SetLogonNotifyWindowRequest.LogonNotifyWindow = Wnd;
  62
  63   Status = CsrClientCallServer(&Request,
  64                                NULL,
  65                    CsrRequest,
  66                                sizeof(CSR_API_MESSAGE));
  67   if (!NT_SUCCESS(Status) || !NT_SUCCESS(Status = Request.Status))
  68     {
  69       SetLastError(RtlNtStatusToDosError(Status));
  70       return(FALSE);
  71     }
  72
  73   return NtUserSetLogonNotifyWindow(Wnd);
  74 }
  75
  76 /*
  77  * @implemented
  78  */
  79 BOOL WINAPI
  80 UpdatePerUserSystemParameters(
  81    DWORD dwReserved,
  82    BOOL bEnable)
  83 {
  84    return NtUserUpdatePerUserSystemParameters(dwReserved, bEnable);
  85 }
  86
  87 PTHREADINFO
  88 GetW32ThreadInfo(VOID)
  89 {
  90     PTHREADINFO ti;
  91
  92     ti = (PTHREADINFO)NtCurrentTeb()->Win32ThreadInfo;
  93     if (ti == NULL)
  94     {
  95         /* create the THREADINFO structure */
  96         NtUserGetThreadState(THREADSTATE_GETTHREADINFO);
  97         ti = (PTHREADINFO)NtCurrentTeb()->Win32ThreadInfo;
  98     }
  99
 100     return ti;
 101 }
 102
 103
 104 /*
 105  * GetUserObjectSecurity
 106  *
 107  * Retrieves security information for user object specified
 108  * with handle 'hObject'. Descriptor returned in self-relative
 109  * format.
 110  *
 111  * Arguments:
 112  *  1) hObject - handle to an object to retrieve information for
 113  *  2) pSecurityInfo - type of information to retrieve
 114  *  3) pSecurityDescriptor - buffer which receives descriptor
 115  *  4) dwLength - size, in bytes, of buffer 'pSecurityDescriptor'
 116  *  5) pdwLengthNeeded - reseives actual size of descriptor
 117  *
 118  * Return Vaules:
 119  *  TRUE on success
 120  *  FALSE on failure, call GetLastError() for more information
 121  */
 122 /*
 123  * @implemented
 124  */
 125 BOOL
 126 WINAPI
 127 GetUserObjectSecurity(
 128     IN HANDLE hObject,
 129     IN PSECURITY_INFORMATION pSecurityInfo,
 130     OUT PSECURITY_DESCRIPTOR pSecurityDescriptor,
 131     IN DWORD dwLength,
 132     OUT PDWORD pdwLengthNeeded
 133 )
 134 {
 135 DWORD dwWin32Error;
 136 NTSTATUS Status;
 137
 138
 139     Status = NtQuerySecurityObject(
 140         hObject,            // Object Handle
 141         *pSecurityInfo,     // Security Information
 142         pSecurityDescriptor,// Security Descriptor
 143         dwLength,           // Buffer Length
 144         pdwLengthNeeded     // Actual Length
 145     );
 146
 147     if ( ! NT_SUCCESS( Status ) ) {
 148         dwWin32Error = RtlNtStatusToDosError( Status );
 149         NtCurrentTeb()->LastErrorValue = dwWin32Error;
 150         return FALSE;
 151     }
 152
 153     return TRUE;
 154 }
 155
 156
 157 /*
 158  * SetUserObjectSecurity
 159  *
 160  * Sets new security descriptor to user object specified by
 161  * handle 'hObject'. Descriptor must be in self-relative format.
 162  *
 163  * Arguments:
 164  *  1) hObject - handle to an object to set information for
 165  *  2) pSecurityInfo - type of information to apply
 166  *  3) pSecurityDescriptor - buffer which descriptor to set
 167  *
 168  * Return Vaules:
 169  *  TRUE on success
 170  *  FALSE on failure, call GetLastError() for more information
 171  */
 172 /*
 173  * @implemented
 174  */
 175 BOOL
 176 WINAPI
 177 SetUserObjectSecurity(
 178     IN HANDLE hObject,
 179     IN PSECURITY_INFORMATION pSecurityInfo,
 180     IN PSECURITY_DESCRIPTOR pSecurityDescriptor
 181 )
 182 {
 183 DWORD dwWin32Error;
 184 NTSTATUS Status;
 185
 186
 187     Status = NtSetSecurityObject(
 188         hObject,            // Object Handle
 189         *pSecurityInfo,     // Security Information
 190         pSecurityDescriptor // Security Descriptor
 191     );
 192
 193     if ( ! NT_SUCCESS( Status ) ) {
 194         dwWin32Error = RtlNtStatusToDosError( Status );
 195         NtCurrentTeb()->LastErrorValue = dwWin32Error;
 196         return FALSE;
 197     }
 198
 199     return TRUE;
 200 }
 201
 202 /*
 203  * @implemented
 204  */
 205 BOOL
 206 WINAPI
 207 EndTask(
 208         HWND    hWnd,
 209         BOOL fShutDown,
 210         BOOL fForce)
 211 {
 212     SendMessageW(hWnd, WM_CLOSE, 0, 0);
 213
 214     if (IsWindow(hWnd))
 215     {
 216         if (fForce)
 217             return DestroyWindow(hWnd);
 218         else
 219             return FALSE;
 220     }
 221
 222     return TRUE;
 223 }
 224
 225 /*
 226  * @implemented
 227  */
 228 BOOL
 229 WINAPI
 230 IsGUIThread(
 231     BOOL bConvert)
 232 {
 233   PTHREADINFO ti = (PTHREADINFO)NtCurrentTeb()->Win32ThreadInfo;
 234   if (ti == NULL)
 235   {
 236     if(bConvert)
 237     {
 238       NtUserGetThreadState(THREADSTATE_GETTHREADINFO);
 239       if ((PTHREADINFO)NtCurrentTeb()->Win32ThreadInfo) return TRUE;
 240       else
 241          SetLastError(ERROR_NOT_ENOUGH_MEMORY);
 242     }
 243     return FALSE;
 244   }
 245   else
 246     return TRUE;
 247 }
 248
 249 BOOL
 250 FASTCALL
 251 TestWindowProcess(PWND Wnd)
 252 {
 253    if (Wnd->head.pti == (PTHREADINFO)NtCurrentTeb()->Win32ThreadInfo)
 254       return TRUE;
 255    else
 256       return (NtUserQueryWindow(Wnd->head.h, QUERY_WINDOW_UNIQUE_PROCESS_ID) ==
 257               (DWORD_PTR)NtCurrentTeb()->ClientId.UniqueProcess );
 258 }
 259
 260 BOOL
 261 FASTCALL
 262 TestState(PWND pWnd, UINT Flag)
 263 {
 264     UINT bit;
 265     bit = 1 << LOWORD(Flag);
 266     switch(HIWORD(Flag))
 267     {
 268        case 0:
 269           return (pWnd->state & bit);
 270        case 1:
 271           return (pWnd->state2 & bit);
 272        case 2:
 273           return (pWnd->ExStyle2 & bit);
 274     }
 275     return FALSE;
 276 }
 277
 278 PUSER_HANDLE_ENTRY
 279 FASTCALL
 280 GetUser32Handle(HANDLE handle)
 281 {
 282     INT Index;
 283     USHORT generation;
 284
 285     if (!handle) return NULL;
 286
 287     Index = (((UINT_PTR)handle & 0xffff) - FIRST_USER_HANDLE) >> 1;
 288
 289     if (Index < 0 || Index >= gHandleTable->nb_handles)
 290         return NULL;
 291
 292     if (!gHandleEntries[Index].type || !gHandleEntries[Index].ptr)
 293         return NULL;
 294
 295     generation = (UINT_PTR)handle >> 16;
 296
 297     if (generation == gHandleEntries[Index].generation || !generation || generation == 0xffff)
 298         return &gHandleEntries[Index];
 299
 300     return NULL;
 301 }
 302
 303 /*
 304  * Decide whether an object is located on the desktop or shared heap
 305  */
 306 static const BOOL g_ObjectHeapTypeShared[otEvent + 1] =
 307 {
 308     FALSE, /* otFree (not used) */
 309     FALSE, /* otWindow */
 310     TRUE,  /* otMenu  FALSE */
 311     TRUE,  /* otCursorIcon */
 312     TRUE,  /* otSMWP */
 313     FALSE, /* otHook */
 314     FALSE, /* (not used) */
 315     FALSE, /* otCallProc */
 316     TRUE,  /* otAccel */
 317     FALSE, /* (not used) */
 318     FALSE, /* (not used) */
 319     FALSE, /* (not used) */
 320     TRUE,  /* otMonitor */
 321     FALSE, /* (not used) */
 322     FALSE, /* (not used) */
 323     TRUE   /* otEvent */
 324 };
 325
 326 //
 327 // Validate Handle and return the pointer to the object.
 328 //
 329 PVOID
 330 FASTCALL
 331 ValidateHandle(HANDLE handle, UINT uType)
 332 {
 333   PVOID ret;
 334   PUSER_HANDLE_ENTRY pEntry;
 335
 336   ASSERT(uType <= otEvent);
 337
 338   pEntry = GetUser32Handle(handle);
 339
 340   if (pEntry && uType == 0)
 341       uType = pEntry->type;
 342
 343 // Must have an entry and must be the same type!
 344   if ( (!pEntry) ||
 345         (pEntry->type != uType) ||
 346         !pEntry->ptr ||
 347         (pEntry->flags & HANDLEENTRY_INDESTROY) )
 348   {
 349      switch ( uType )
 350      {  // Test (with wine too) confirms these results!
 351         case otWindow:
 352           SetLastError(ERROR_INVALID_WINDOW_HANDLE);
 353           break;
 354         case otMenu:
 355           SetLastError(ERROR_INVALID_MENU_HANDLE);
 356           break;
 357         case otCursorIcon:
 358           SetLastError(ERROR_INVALID_CURSOR_HANDLE);
 359           break;
 360         case otSMWP:
 361           SetLastError(ERROR_INVALID_DWP_HANDLE);
 362           break;
 363         case otHook:
 364           SetLastError(ERROR_INVALID_HOOK_HANDLE);
 365           break;
 366         case otAccel:
 367           SetLastError(ERROR_INVALID_ACCEL_HANDLE);
 368           break;
 369         default:
 370           SetLastError(ERROR_INVALID_HANDLE);
 371           break;
 372     }
 373     return NULL;
 374   }
 375
 376   if (g_ObjectHeapTypeShared[uType])
 377     ret = SharedPtrToUser(pEntry->ptr);
 378   else
 379     ret = DesktopPtrToUser(pEntry->ptr);
 380
 381   return ret;
 382 }
 383
 384 //
 385 // Validate Handle and return the pointer to the object.
 386 //
 387 PVOID
 388 FASTCALL
 389 ValidateHandleNoErr(HANDLE handle, UINT uType)
 390 {
 391   PVOID ret;
 392   PUSER_HANDLE_ENTRY pEntry;
 393
 394   ASSERT(uType <= otEvent);
 395
 396   pEntry = GetUser32Handle(handle);
 397
 398   if (pEntry && uType == 0)
 399       uType = pEntry->type;
 400
 401 // Must have an entry and must be the same type!
 402   if ( (!pEntry) || (pEntry->type != uType) || !pEntry->ptr )
 403     return NULL;
 404
 405   if (g_ObjectHeapTypeShared[uType])
 406     ret = SharedPtrToUser(pEntry->ptr);
 407   else
 408     ret = DesktopPtrToUser(pEntry->ptr);
 409
 410   return ret;
 411 }
 412
 413 //
 414 // Validate a callproc handle and return the pointer to the object.
 415 //
 416 PCALLPROCDATA
 417 FASTCALL
 418 ValidateCallProc(HANDLE hCallProc)
 419 {
 420   PUSER_HANDLE_ENTRY pEntry;
 421
 422   PCALLPROCDATA CallProc = ValidateHandle(hCallProc, otCallProc);
 423
 424   pEntry = GetUser32Handle(hCallProc);
 425
 426   if (CallProc != NULL && pEntry->ppi == g_ppi)
 427      return CallProc;
 428
 429   return NULL;
 430 }
 431
 432
 433 //
 434 // Validate a window handle and return the pointer to the object.
 435 //
 436 PWND
 437 FASTCALL
 438 ValidateHwnd(HWND hwnd)
 439 {
 440     PCLIENTINFO ClientInfo = GetWin32ClientInfo();
 441     ASSERT(ClientInfo != NULL);
 442
 443     /* See if the window is cached */
 444     if (hwnd && hwnd == ClientInfo->CallbackWnd.hWnd)
 445         return ClientInfo->CallbackWnd.pWnd;
 446
 447     return ValidateHandle((HANDLE)hwnd, otWindow);
 448 }
 449
 450 //
 451 // Validate a window handle and return the pointer to the object.
 452 //
 453 PWND
 454 FASTCALL
 455 ValidateHwndNoErr(HWND hwnd)
 456 {
 457     PWND Wnd;
 458     PCLIENTINFO ClientInfo = GetWin32ClientInfo();
 459     ASSERT(ClientInfo != NULL);
 460
 461     /* See if the window is cached */
 462     if (hwnd == ClientInfo->CallbackWnd.hWnd)
 463         return ClientInfo->CallbackWnd.pWnd;
 464
 465     Wnd = ValidateHandleNoErr((HANDLE)hwnd, otWindow);
 466     if (Wnd != NULL)
 467     {
 468         return Wnd;
 469     }
 470
 471     return NULL;
 472 }
 473
 474 PWND
 475 FASTCALL
 476 GetThreadDesktopWnd(VOID)
 477 {
 478     PWND Wnd = GetThreadDesktopInfo()->spwnd;
 479     if (Wnd != NULL)
 480         Wnd = DesktopPtrToUser(Wnd);
 481     return Wnd;
 482 }
 483
 484 //
 485 // Validate a window handle and return the pointer to the object.
 486 //
 487 PWND
 488 FASTCALL
 489 ValidateHwndOrDesk(HWND hwnd)
 490 {
 491     if (hwnd == HWND_DESKTOP)
 492         return GetThreadDesktopWnd();
 493
 494     return ValidateHwnd(hwnd);
 495 }
 496
 497 /*
 498  * @implemented
 499  */
 500 DWORD WINAPI WCSToMBEx(WORD CodePage,LPWSTR UnicodeString,LONG UnicodeSize,LPSTR *MBString,LONG MBSize,BOOL Allocate)
 501 {
 502         DWORD Size;
 503         if (UnicodeSize == -1)
 504         {
 505                 UnicodeSize = wcslen(UnicodeString)+1;
 506         }
 507         if (MBSize == -1)
 508         {
 509                 if (!Allocate)
 510                 {
 511                         return 0;
 512                 }
 513                 MBSize = UnicodeSize * 2;
 514         }
 515         if (Allocate)
 516         {
 517                 LPSTR SafeString = RtlAllocateHeap(GetProcessHeap(), 0, MBSize);
 518         if (SafeString == NULL)
 519             return 0;
 520         *MBString = SafeString;
 521         }
 522         if (CodePage == 0)
 523         {
 524                 RtlUnicodeToMultiByteN(*MBString,MBSize,&Size,UnicodeString,UnicodeSize);
 525         }
 526         else
 527         {
 528                 WideCharToMultiByte(CodePage,0,UnicodeString,UnicodeSize,*MBString,MBSize,0,0);
 529         }
 530         return UnicodeSize;
 531 }
 532
 533 /*
 534  * @implemented
 535  */
 536 DWORD WINAPI MBToWCSEx(WORD CodePage,LPSTR MBString,LONG MBSize,LPWSTR *UnicodeString,LONG UnicodeSize,BOOL Allocate)
 537 {
 538         DWORD Size;
 539         if (MBSize == -1)
 540         {
 541                 MBSize = strlen(MBString)+1;
 542         }
 543         if (UnicodeSize == -1)
 544         {
 545                 if (!Allocate)
 546                 {
 547                         return 0;
 548                 }
 549                 UnicodeSize = MBSize;
 550         }
 551         if (Allocate)
 552         {
 553                 LPWSTR SafeString = RtlAllocateHeap(GetProcessHeap(), 0, UnicodeSize);
 554         if (SafeString == NULL)
 555             return 0;
 556         *UnicodeString = SafeString;
 557         }
 558         UnicodeSize *= sizeof(WCHAR);
 559         if (CodePage == 0)
 560         {
 561                 RtlMultiByteToUnicodeN(*UnicodeString,UnicodeSize,&Size,MBString,MBSize);
 562         }
 563         else
 564         {
 565                 Size = MultiByteToWideChar(CodePage,0,MBString,MBSize,*UnicodeString,UnicodeSize);
 566         }
 567         return Size;
 568 }