win32ss/user/ntuser/input.c

   1 /*
   2  * COPYRIGHT:        See COPYING in the top level directory
   3  * PROJECT:          ReactOS Win32k subsystem
   4  * PURPOSE:          General input functions
   5  * FILE:             win32ss/user/ntuser/input.c
   6  * PROGRAMERS:       Casper S. Hornstrup (chorns@users.sourceforge.net)
   7  *                   Rafal Harabien (rafalh@reactos.org)
   8  */
   9
  10 #include <win32k.h>
  11 DBG_DEFAULT_CHANNEL(UserInput);
  12
  13 /* GLOBALS *******************************************************************/
  14
  15 PTHREADINFO ptiRawInput;
  16 PKTIMER MasterTimer = NULL;
  17 PATTACHINFO gpai = NULL;
  18 INT paiCount = 0;
  19 HANDLE ghKeyboardDevice = NULL;
  20
  21 static DWORD LastInputTick = 0;
  22 static HANDLE ghMouseDevice;
  23
  24 /* FUNCTIONS *****************************************************************/
  25
  26 /*
  27  * IntLastInputTick
  28  *
  29  * Updates or gets last input tick count
  30  */
  31 static DWORD FASTCALL
  32 IntLastInputTick(BOOL bUpdate)
  33 {
  34     if (bUpdate)
  35     {
  36         LastInputTick = EngGetTickCount32();
  37         if (gpsi) gpsi->dwLastRITEventTickCount = LastInputTick;
  38     }
  39     return LastInputTick;
  40 }
  41
  42 /*
  43  * DoTheScreenSaver
  44  *
  45  * Check if scrensaver should be started and sends message to SAS window
  46  */
  47 VOID FASTCALL
  48 DoTheScreenSaver(VOID)
  49 {
  50     DWORD Test, TO;
  51
  52     if (gspv.iScrSaverTimeout > 0) // Zero means Off.
  53     {
  54         Test = EngGetTickCount32();
  55         Test = Test - LastInputTick;
  56         TO = 1000 * gspv.iScrSaverTimeout;
  57         if (Test > TO)
  58         {
  59             TRACE("Screensaver Message Start! Tick %lu Timeout %d \n", Test, gspv.iScrSaverTimeout);
  60
  61             if (ppiScrnSaver) // We are or we are not the screensaver, prevent reentry...
  62             {
  63                 if (!(ppiScrnSaver->W32PF_flags & W32PF_IDLESCREENSAVER))
  64                 {
  65                     ppiScrnSaver->W32PF_flags |= W32PF_IDLESCREENSAVER;
  66                     ERR("Screensaver is Idle\n");
  67                 }
  68             }
  69             else
  70             {
  71                 PUSER_MESSAGE_QUEUE ForegroundQueue = IntGetFocusMessageQueue();
  72                 if (ForegroundQueue && ForegroundQueue->spwndActive)
  73                     UserPostMessage(hwndSAS, WM_LOGONNOTIFY, LN_START_SCREENSAVE, 1); // lParam 1 == Secure
  74                 else
  75                     UserPostMessage(hwndSAS, WM_LOGONNOTIFY, LN_START_SCREENSAVE, 0);
  76             }
  77         }
  78     }
  79 }
  80
  81 /*
  82  * OpenInputDevice
  83  *
  84  * Opens input device for asynchronous access
  85  */
  86 static
  87 NTSTATUS NTAPI
  88 OpenInputDevice(PHANDLE pHandle, PFILE_OBJECT *ppObject, CONST WCHAR *pszDeviceName)
  89 {
  90     UNICODE_STRING DeviceName;
  91     OBJECT_ATTRIBUTES ObjectAttributes;
  92     NTSTATUS Status;
  93     IO_STATUS_BLOCK Iosb;
  94
  95     RtlInitUnicodeString(&DeviceName, pszDeviceName);
  96
  97     InitializeObjectAttributes(&ObjectAttributes,
  98                                &DeviceName,
  99                                OBJ_KERNEL_HANDLE,
 100                                NULL,
 101                                NULL);
 102
 103     Status = ZwOpenFile(pHandle,
 104                         FILE_ALL_ACCESS,
 105                         &ObjectAttributes,
 106                         &Iosb,
 107                         0,
 108                         0);
 109     if (NT_SUCCESS(Status) && ppObject)
 110     {
 111         Status = ObReferenceObjectByHandle(*pHandle, SYNCHRONIZE, NULL, KernelMode, (PVOID*)ppObject, NULL);
 112         ASSERT(NT_SUCCESS(Status));
 113     }
 114
 115     return Status;
 116 }
 117
 118 /*
 119  * RawInputThreadMain
 120  *
 121  * Reads data from input devices and supports win32 timers
 122  */
 123 VOID NTAPI
 124 RawInputThreadMain(VOID)
 125 {
 126     NTSTATUS MouStatus = STATUS_UNSUCCESSFUL, KbdStatus = STATUS_UNSUCCESSFUL, Status;
 127     IO_STATUS_BLOCK MouIosb, KbdIosb;
 128     PFILE_OBJECT pKbdDevice = NULL, pMouDevice = NULL;
 129     LARGE_INTEGER ByteOffset;
 130     //LARGE_INTEGER WaitTimeout;
 131     PVOID WaitObjects[4], pSignaledObject = NULL;
 132     KWAIT_BLOCK WaitBlockArray[RTL_NUMBER_OF(WaitObjects)];
 133     ULONG cWaitObjects = 0, cMaxWaitObjects = 2;
 134     MOUSE_INPUT_DATA MouseInput;
 135     KEYBOARD_INPUT_DATA KeyInput;
 136     PVOID ShutdownEvent;
 137     HWINSTA hWinSta;
 138
 139     ByteOffset.QuadPart = (LONGLONG)0;
 140     //WaitTimeout.QuadPart = (LONGLONG)(-10000000);
 141
 142     ptiRawInput = GetW32ThreadInfo();
 143     ptiRawInput->TIF_flags |= TIF_SYSTEMTHREAD;
 144     ptiRawInput->pClientInfo->dwTIFlags = ptiRawInput->TIF_flags;
 145
 146     TRACE("Raw Input Thread %p\n", ptiRawInput);
 147
 148     KeSetPriorityThread(&PsGetCurrentThread()->Tcb,
 149                         LOW_REALTIME_PRIORITY + 3);
 150
 151     Status = ObOpenObjectByPointer(InputWindowStation,
 152                                    0,
 153                                    NULL,
 154                                    MAXIMUM_ALLOWED,
 155                                    ExWindowStationObjectType,
 156                                    UserMode,
 157                                    (PHANDLE)&hWinSta);
 158     if (NT_SUCCESS(Status))
 159     {
 160         UserSetProcessWindowStation(hWinSta);
 161     }
 162     else
 163     {
 164         ASSERT(FALSE);
 165         /* Failed to open the interactive winsta! What now? */
 166     }
 167
 168     UserEnterExclusive();
 169     StartTheTimers();
 170     UserLeave();
 171
 172     NT_ASSERT(ghMouseDevice == NULL);
 173     NT_ASSERT(ghKeyboardDevice == NULL);
 174
 175     PoRequestShutdownEvent(&ShutdownEvent);
 176     for (;;)
 177     {
 178         if (!ghMouseDevice)
 179         {
 180             /* Check if mouse device already exists */
 181             Status = OpenInputDevice(&ghMouseDevice, &pMouDevice, L"\\Device\\PointerClass0" );
 182             if (NT_SUCCESS(Status))
 183             {
 184                 ++cMaxWaitObjects;
 185                 TRACE("Mouse connected!\n");
 186             }
 187         }
 188         if (!ghKeyboardDevice)
 189         {
 190             /* Check if keyboard device already exists */
 191             Status = OpenInputDevice(&ghKeyboardDevice, &pKbdDevice, L"\\Device\\KeyboardClass0");
 192             if (NT_SUCCESS(Status))
 193             {
 194                 ++cMaxWaitObjects;
 195                 TRACE("Keyboard connected!\n");
 196                 // Get and load keyboard attributes.
 197                 UserInitKeyboard(ghKeyboardDevice);
 198                 UserEnterExclusive();
 199                 // Register the Window hotkey.
 200                 UserRegisterHotKey(PWND_BOTTOM, IDHK_WINKEY, MOD_WIN, 0);
 201                 // Register the Window Snap hotkey.
 202                 UserRegisterHotKey(PWND_BOTTOM, IDHK_SNAP_LEFT, MOD_WIN, VK_LEFT);
 203                 UserRegisterHotKey(PWND_BOTTOM, IDHK_SNAP_RIGHT, MOD_WIN, VK_RIGHT);
 204                 UserRegisterHotKey(PWND_BOTTOM, IDHK_SNAP_UP, MOD_WIN, VK_UP);
 205                 UserRegisterHotKey(PWND_BOTTOM, IDHK_SNAP_DOWN, MOD_WIN, VK_DOWN);
 206                 // Register the debug hotkeys.
 207                 StartDebugHotKeys();
 208                 UserLeave();
 209             }
 210         }
 211
 212         /* Reset WaitHandles array */
 213         cWaitObjects = 0;
 214         WaitObjects[cWaitObjects++] = ShutdownEvent;
 215         WaitObjects[cWaitObjects++] = MasterTimer;
 216
 217         if (ghMouseDevice)
 218         {
 219             /* Try to read from mouse if previous reading is not pending */
 220             if (MouStatus != STATUS_PENDING)
 221             {
 222                 MouStatus = ZwReadFile(ghMouseDevice,
 223                                        NULL,
 224                                        NULL,
 225                                        NULL,
 226                                        &MouIosb,
 227                                        &MouseInput,
 228                                        sizeof(MOUSE_INPUT_DATA),
 229                                        &ByteOffset,
 230                                        NULL);
 231             }
 232
 233             if (MouStatus == STATUS_PENDING)
 234                 WaitObjects[cWaitObjects++] = &pMouDevice->Event;
 235         }
 236
 237         if (ghKeyboardDevice)
 238         {
 239             /* Try to read from keyboard if previous reading is not pending */
 240             if (KbdStatus != STATUS_PENDING)
 241             {
 242                 KbdStatus = ZwReadFile(ghKeyboardDevice,
 243                                        NULL,
 244                                        NULL,
 245                                        NULL,
 246                                        &KbdIosb,
 247                                        &KeyInput,
 248                                        sizeof(KEYBOARD_INPUT_DATA),
 249                                        &ByteOffset,
 250                                        NULL);
 251
 252             }
 253             if (KbdStatus == STATUS_PENDING)
 254                 WaitObjects[cWaitObjects++] = &pKbdDevice->Event;
 255         }
 256
 257         /* If all objects are pending, wait for them */
 258         if (cWaitObjects == cMaxWaitObjects)
 259         {
 260             Status = KeWaitForMultipleObjects(cWaitObjects,
 261                                               WaitObjects,
 262                                               WaitAny,
 263                                               UserRequest,
 264                                               KernelMode,
 265                                               TRUE,
 266                                               NULL,//&WaitTimeout,
 267                                               WaitBlockArray);
 268
 269             if ((Status >= STATUS_WAIT_0) &&
 270                 (Status < (STATUS_WAIT_0 + (LONG)cWaitObjects)))
 271             {
 272                 /* Some device has finished reading */
 273                 pSignaledObject = WaitObjects[Status - STATUS_WAIT_0];
 274
 275                 /* Check if it is mouse or keyboard and update status */
 276                 if ((MouStatus == STATUS_PENDING) &&
 277                     (pSignaledObject == &pMouDevice->Event))
 278                 {
 279                     MouStatus = MouIosb.Status;
 280                 }
 281                 else if ((KbdStatus == STATUS_PENDING) &&
 282                          (pSignaledObject == &pKbdDevice->Event))
 283                 {
 284                     KbdStatus = KbdIosb.Status;
 285                 }
 286                 else if (pSignaledObject == MasterTimer)
 287                 {
 288                     ProcessTimers();
 289                 }
 290                 else if (pSignaledObject == ShutdownEvent)
 291                 {
 292                     break;
 293                 }
 294                 else ASSERT(FALSE);
 295             }
 296         }
 297
 298         /* Have we successed reading from mouse? */
 299         if (NT_SUCCESS(MouStatus) && MouStatus != STATUS_PENDING)
 300         {
 301             TRACE("MouseEvent\n");
 302
 303             /* Set LastInputTick */
 304             IntLastInputTick(TRUE);
 305
 306             /* Process data */
 307             UserEnterExclusive();
 308             UserProcessMouseInput(&MouseInput);
 309             UserLeave();
 310         }
 311         else if (MouStatus != STATUS_PENDING)
 312             ERR("Failed to read from mouse: %x.\n", MouStatus);
 313
 314         /* Have we successed reading from keyboard? */
 315         if (NT_SUCCESS(KbdStatus) && KbdStatus != STATUS_PENDING)
 316         {
 317             TRACE("KeyboardEvent: %s %04x\n",
 318                   (KeyInput.Flags & KEY_BREAK) ? "up" : "down",
 319                   KeyInput.MakeCode);
 320
 321             /* Set LastInputTick */
 322             IntLastInputTick(TRUE);
 323
 324             /* Process data */
 325             UserEnterExclusive();
 326             UserProcessKeyboardInput(&KeyInput);
 327             UserLeave();
 328         }
 329         else if (KbdStatus != STATUS_PENDING)
 330             ERR("Failed to read from keyboard: %x.\n", KbdStatus);
 331     }
 332
 333     if (ghMouseDevice)
 334     {
 335         (void)ZwCancelIoFile(ghMouseDevice, &MouIosb);
 336         ObCloseHandle(ghMouseDevice, KernelMode);
 337         ObDereferenceObject(pMouDevice);
 338         ghMouseDevice = NULL;
 339     }
 340
 341     if (ghKeyboardDevice)
 342     {
 343         (void)ZwCancelIoFile(ghKeyboardDevice, &KbdIosb);
 344         ObCloseHandle(ghKeyboardDevice, KernelMode);
 345         ObDereferenceObject(pKbdDevice);
 346         ghKeyboardDevice = NULL;
 347     }
 348
 349     ERR("Raw Input Thread Exit!\n");
 350 }
 351
 352 /*
 353  * InitInputImpl
 354  *
 355  * Inits input implementation
 356  */
 357 INIT_FUNCTION
 358 NTSTATUS
 359 NTAPI
 360 InitInputImpl(VOID)
 361 {
 362     MasterTimer = ExAllocatePoolWithTag(NonPagedPool, sizeof(KTIMER), USERTAG_SYSTEM);
 363     if (!MasterTimer)
 364     {
 365         ERR("Failed to allocate memory\n");
 366         ASSERT(FALSE);
 367         return STATUS_UNSUCCESSFUL;
 368     }
 369     KeInitializeTimer(MasterTimer);
 370
 371     return STATUS_SUCCESS;
 372 }
 373
 374 BOOL FASTCALL
 375 IntBlockInput(PTHREADINFO pti, BOOL BlockIt)
 376 {
 377     PTHREADINFO OldBlock;
 378     ASSERT(pti);
 379
 380     if(!pti->rpdesk || ((pti->TIF_flags & TIF_INCLEANUP) && BlockIt))
 381     {
 382         /*
 383          * Fail blocking if exiting the thread
 384          */
 385
 386         return FALSE;
 387     }
 388
 389     /*
 390      * FIXME: Check access rights of the window station
 391      *        e.g. services running in the service window station cannot block input
 392      */
 393     if(!ThreadHasInputAccess(pti) ||
 394        !IntIsActiveDesktop(pti->rpdesk))
 395     {
 396         EngSetLastError(ERROR_ACCESS_DENIED);
 397         return FALSE;
 398     }
 399
 400     ASSERT(pti->rpdesk);
 401     OldBlock = pti->rpdesk->BlockInputThread;
 402     if(OldBlock)
 403     {
 404         if(OldBlock != pti)
 405         {
 406             EngSetLastError(ERROR_ACCESS_DENIED);
 407             return FALSE;
 408         }
 409         pti->rpdesk->BlockInputThread = (BlockIt ? pti : NULL);
 410         return OldBlock == NULL;
 411     }
 412
 413     pti->rpdesk->BlockInputThread = (BlockIt ? pti : NULL);
 414     return OldBlock == NULL;
 415 }
 416
 417 BOOL
 418 APIENTRY
 419 NtUserBlockInput(
 420     BOOL BlockIt)
 421 {
 422     BOOL ret;
 423
 424     TRACE("Enter NtUserBlockInput\n");
 425     UserEnterExclusive();
 426
 427     ret = IntBlockInput(PsGetCurrentThreadWin32Thread(), BlockIt);
 428
 429     UserLeave();
 430     TRACE("Leave NtUserBlockInput, ret=%i\n", ret);
 431
 432     return ret;
 433 }
 434
 435 BOOL
 436 FASTCALL
 437 IsRemoveAttachThread(PTHREADINFO pti)
 438 {
 439     NTSTATUS Status;
 440     PATTACHINFO pai;
 441     BOOL Ret = TRUE;
 442     PTHREADINFO ptiFrom = NULL, ptiTo = NULL;
 443
 444     do
 445     {
 446        if (!gpai) return TRUE;
 447
 448        pai = gpai; // Bottom of the list.
 449
 450        do
 451        {
 452           if (pai->pti2 == pti)
 453           {
 454              ptiFrom = pai->pti1;
 455              ptiTo = pti;
 456              break;
 457           }
 458           if (pai->pti1 == pti)
 459           {
 460              ptiFrom = pti;
 461              ptiTo = pai->pti2;
 462              break;
 463           }
 464           pai = pai->paiNext;
 465
 466        } while (pai);
 467
 468        if (!pai && !ptiFrom && !ptiTo) break;
 469
 470        Status = UserAttachThreadInput(ptiFrom, ptiTo, FALSE);
 471        if (!NT_SUCCESS(Status)) Ret = FALSE;
 472
 473     } while (Ret);
 474
 475     return Ret;
 476 }
 477
 478 NTSTATUS FASTCALL
 479 UserAttachThreadInput(PTHREADINFO ptiFrom, PTHREADINFO ptiTo, BOOL fAttach)
 480 {
 481     MSG msg;
 482     PATTACHINFO pai;
 483     PCURICON_OBJECT CurIcon;
 484
 485     /* Can not be the same thread. */
 486     if (ptiFrom == ptiTo) return STATUS_INVALID_PARAMETER;
 487
 488     /* Do not attach to system threads or between different desktops. */
 489     if (ptiFrom->TIF_flags & TIF_DONTATTACHQUEUE ||
 490         ptiTo->TIF_flags & TIF_DONTATTACHQUEUE ||
 491         ptiFrom->rpdesk != ptiTo->rpdesk)
 492         return STATUS_ACCESS_DENIED;
 493
 494     /* MSDN Note:
 495        Keyboard and mouse events received by both threads are processed by the thread specified by the idAttachTo.
 496      */
 497
 498     /* If Attach set, allocate and link. */
 499     if (fAttach)
 500     {
 501         pai = ExAllocatePoolWithTag(PagedPool, sizeof(ATTACHINFO), USERTAG_ATTACHINFO);
 502         if (!pai) return STATUS_NO_MEMORY;
 503
 504         pai->paiNext = gpai;
 505         pai->pti1 = ptiFrom;
 506         pai->pti2 = ptiTo;
 507         gpai = pai;
 508         paiCount++;
 509         ERR("Attach Allocated! ptiFrom 0x%p  ptiTo 0x%p paiCount %d\n",ptiFrom,ptiTo,paiCount);
 510
 511         if (ptiTo->MessageQueue != ptiFrom->MessageQueue)
 512         {
 513
 514            ptiTo->MessageQueue->iCursorLevel -= ptiFrom->iCursorLevel;
 515
 516            if (ptiFrom->MessageQueue == gpqForeground)
 517            {
 518               ERR("ptiFrom is Foreground\n");
 519               ptiTo->MessageQueue->spwndActive  = ptiFrom->MessageQueue->spwndActive;
 520               ptiTo->MessageQueue->spwndFocus   = ptiFrom->MessageQueue->spwndFocus;
 521               ptiTo->MessageQueue->spwndCapture = ptiFrom->MessageQueue->spwndCapture;
 522               ptiTo->MessageQueue->QF_flags    ^= ((ptiTo->MessageQueue->QF_flags ^ ptiFrom->MessageQueue->QF_flags) & QF_CAPTURELOCKED);
 523               RtlCopyMemory(&ptiTo->MessageQueue->CaretInfo,
 524                             &ptiFrom->MessageQueue->CaretInfo,
 525                             sizeof(ptiTo->MessageQueue->CaretInfo));
 526               IntSetFocusMessageQueue(NULL);
 527               IntSetFocusMessageQueue(ptiTo->MessageQueue);
 528               gptiForeground = ptiTo;
 529            }
 530            else
 531            {
 532               ERR("ptiFrom NOT Foreground\n");
 533               if ( ptiTo->MessageQueue->spwndActive == 0 )
 534                   ptiTo->MessageQueue->spwndActive = ptiFrom->MessageQueue->spwndActive;
 535               if ( ptiTo->MessageQueue->spwndFocus == 0 )
 536                   ptiTo->MessageQueue->spwndFocus  = ptiFrom->MessageQueue->spwndFocus;
 537            }
 538
 539            CurIcon = ptiFrom->MessageQueue->CursorObject;
 540
 541            MsqDestroyMessageQueue(ptiFrom);
 542
 543            if (CurIcon)
 544            {
 545               // Could be global. Keep it above the water line!
 546               UserReferenceObject(CurIcon);
 547            }
 548
 549            if (CurIcon && UserObjectInDestroy(UserHMGetHandle(CurIcon)))
 550            {
 551               UserDereferenceObject(CurIcon);
 552               CurIcon = NULL;
 553            }
 554
 555            ptiFrom->MessageQueue = ptiTo->MessageQueue;
 556
 557            // Pass cursor From if To is null. Pass test_SetCursor parent_id == current pti ID.
 558            if (CurIcon && ptiTo->MessageQueue->CursorObject == NULL)
 559            {
 560               ERR("ptiTo receiving ptiFrom Cursor\n");
 561               ptiTo->MessageQueue->CursorObject = CurIcon;
 562            }
 563
 564            ptiFrom->MessageQueue->cThreads++;
 565            ERR("ptiTo S Share count %u\n", ptiFrom->MessageQueue->cThreads);
 566
 567            IntReferenceMessageQueue(ptiTo->MessageQueue);
 568         }
 569         else
 570         {
 571            ERR("Attach Threads are already associated!\n");
 572         }
 573     }
 574     else /* If clear, unlink and free it. */
 575     {
 576         BOOL Hit = FALSE;
 577         PATTACHINFO *ppai;
 578
 579         if (!gpai) return STATUS_INVALID_PARAMETER;
 580
 581         /* Search list and free if found or return false. */
 582         ppai = &gpai;
 583         while (*ppai != NULL)
 584         {
 585            if ( (*ppai)->pti2 == ptiTo && (*ppai)->pti1 == ptiFrom )
 586            {
 587               pai = *ppai;
 588               /* Remove it from the list */
 589               *ppai = (*ppai)->paiNext;
 590               ExFreePoolWithTag(pai, USERTAG_ATTACHINFO);
 591               paiCount--;
 592               Hit = TRUE;
 593               break;
 594            }
 595            ppai = &((*ppai)->paiNext);
 596         }
 597
 598         if (!Hit) return STATUS_INVALID_PARAMETER;
 599
 600         ERR("Attach Free! ptiFrom 0x%p  ptiTo 0x%p paiCount %d\n",ptiFrom,ptiTo,paiCount);
 601
 602         if (ptiTo->MessageQueue == ptiFrom->MessageQueue)
 603         {
 604            PWND spwndActive = ptiTo->MessageQueue->spwndActive;
 605            PWND spwndFocus  = ptiTo->MessageQueue->spwndFocus;
 606
 607            if (gptiForeground == ptiFrom)
 608            {
 609               ERR("ptiTo is now pti FG.\n");
 610               // MessageQueue foreground is set so switch threads.
 611               gptiForeground = ptiTo;
 612            }
 613            ptiTo->MessageQueue->cThreads--;
 614            ERR("ptiTo E Share count %u\n", ptiTo->MessageQueue->cThreads);
 615            ASSERT(ptiTo->MessageQueue->cThreads >= 1);
 616
 617            IntDereferenceMessageQueue(ptiTo->MessageQueue);
 618
 619            ptiFrom->MessageQueue = MsqCreateMessageQueue(ptiFrom);
 620
 621            if (spwndActive)
 622            {
 623               if (spwndActive->head.pti == ptiFrom)
 624               {
 625                  ptiFrom->MessageQueue->spwndActive = spwndActive;
 626                  ptiTo->MessageQueue->spwndActive = 0;
 627               }
 628            }
 629            if (spwndFocus)
 630            {
 631               if (spwndFocus->head.pti == ptiFrom)
 632               {
 633                  ptiFrom->MessageQueue->spwndFocus = spwndFocus;
 634                  ptiTo->MessageQueue->spwndFocus = 0;
 635               }
 636            }
 637            ptiTo->MessageQueue->iCursorLevel -= ptiFrom->iCursorLevel;
 638         }
 639         else
 640         {
 641            ERR("Detaching Threads are not associated!\n");
 642         }
 643     }
 644     /* Note that key state, which can be ascertained by calls to the GetKeyState
 645        or GetKeyboardState function, is reset after a call to AttachThreadInput.
 646        ATM which one?
 647      */
 648     RtlCopyMemory(ptiTo->MessageQueue->afKeyState, gafAsyncKeyState, sizeof(gafAsyncKeyState));
 649
 650     ptiTo->MessageQueue->msgDblClk.message = 0;
 651
 652     /* Generate mouse move message */
 653     msg.message = WM_MOUSEMOVE;
 654     msg.wParam = UserGetMouseButtonsState();
 655     msg.lParam = MAKELPARAM(gpsi->ptCursor.x, gpsi->ptCursor.y);
 656     msg.pt = gpsi->ptCursor;
 657     co_MsqInsertMouseMessage(&msg, 0, 0, TRUE);
 658
 659     return STATUS_SUCCESS;
 660 }
 661
 662 BOOL
 663 APIENTRY
 664 NtUserAttachThreadInput(
 665     IN DWORD idAttach,
 666     IN DWORD idAttachTo,
 667     IN BOOL fAttach)
 668 {
 669   NTSTATUS Status;
 670   PTHREADINFO pti, ptiTo;
 671   BOOL Ret = FALSE;
 672
 673   UserEnterExclusive();
 674   TRACE("Enter NtUserAttachThreadInput %s\n",(fAttach ? "TRUE" : "FALSE" ));
 675
 676   pti = IntTID2PTI(UlongToHandle(idAttach));
 677   ptiTo = IntTID2PTI(UlongToHandle(idAttachTo));
 678
 679   if ( !pti || !ptiTo )
 680   {
 681      TRACE("AttachThreadInput pti or ptiTo NULL.\n");
 682      EngSetLastError(ERROR_INVALID_PARAMETER);
 683      goto Exit;
 684   }
 685
 686   Status = UserAttachThreadInput( pti, ptiTo, fAttach);
 687   if (!NT_SUCCESS(Status))
 688   {
 689      TRACE("AttachThreadInput Error Status 0x%x. \n",Status);
 690      EngSetLastError(RtlNtStatusToDosError(Status));
 691   }
 692   else Ret = TRUE;
 693
 694 Exit:
 695   TRACE("Leave NtUserAttachThreadInput, ret=%d\n",Ret);
 696   UserLeave();
 697   return Ret;
 698 }
 699
 700 /*
 701  * NtUserSendInput
 702  *
 703  * Generates input events from software
 704  */
 705 UINT
 706 APIENTRY
 707 NtUserSendInput(
 708     UINT nInputs,
 709     LPINPUT pInput,
 710     INT cbSize)
 711 {
 712     PTHREADINFO pti;
 713     UINT uRet = 0;
 714
 715     TRACE("Enter NtUserSendInput\n");
 716     UserEnterExclusive();
 717
 718     pti = PsGetCurrentThreadWin32Thread();
 719     ASSERT(pti);
 720
 721     if (!pti->rpdesk)
 722     {
 723         goto cleanup;
 724     }
 725
 726     if (!nInputs || !pInput || cbSize != sizeof(INPUT))
 727     {
 728         EngSetLastError(ERROR_INVALID_PARAMETER);
 729         goto cleanup;
 730     }
 731
 732     /*
 733      * FIXME: Check access rights of the window station
 734      *        e.g. services running in the service window station cannot block input
 735      */
 736     if (!ThreadHasInputAccess(pti) ||
 737         !IntIsActiveDesktop(pti->rpdesk))
 738     {
 739         EngSetLastError(ERROR_ACCESS_DENIED);
 740         goto cleanup;
 741     }
 742
 743     while (nInputs--)
 744     {
 745         INPUT SafeInput;
 746         NTSTATUS Status;
 747
 748         Status = MmCopyFromCaller(&SafeInput, pInput++, sizeof(INPUT));
 749         if (!NT_SUCCESS(Status))
 750         {
 751             SetLastNtError(Status);
 752             goto cleanup;
 753         }
 754
 755         switch (SafeInput.type)
 756         {
 757             case INPUT_MOUSE:
 758                 if (UserSendMouseInput(&SafeInput.mi, TRUE))
 759                     uRet++;
 760                 break;
 761             case INPUT_KEYBOARD:
 762                 if (UserSendKeyboardInput(&SafeInput.ki, TRUE))
 763                     uRet++;
 764                 break;
 765             case INPUT_HARDWARE:
 766                 FIXME("INPUT_HARDWARE not supported!");
 767                 break;
 768             default:
 769                 ERR("SendInput(): Invalid input type: 0x%x\n", SafeInput.type);
 770                 break;
 771         }
 772     }
 773
 774 cleanup:
 775     TRACE("Leave NtUserSendInput, ret=%u\n", uRet);
 776     UserLeave();
 777     return uRet;
 778 }
 779
 780 /* EOF */