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metasploit-framework/external/source/vncdll/winvnc/VNCHooks/VNCHooks.cpp

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// Copyright (C) 1999 AT&T Laboratories Cambridge. All Rights Reserved.
//
// This file is part of the VNC system.
//
// The VNC system is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
// USA.
//
// TightVNC distribution homepage on the Web: http://www.tightvnc.com/
//
// If the source code for the VNC system is not available from the place
// whence you received this file, check http://www.uk.research.att.com/vnc or contact
// the authors on vnc@uk.research.att.com for information on obtaining it.
// VNCHooks.cpp : Defines the implementation of the DLL.
//
#include "VNCHooks.h"
#include <stdlib.h>
#include <stdio.h>
#include <crtdbg.h>
/////////////////////////////////////////////////////////////////////////////
// Storage for the global data in the DLL
// Note: For Borland C++ compilers, this data segment is defined in a
// separate file, SharedData.cpp.
#ifdef _MSC_VER
// MSVC is bugged - if a default value is missed off from one of the following
// variables then that variable is process-specific for some reason!
#pragma data_seg(".SharedData")
HWND hVeneto = NULL;
HWND hKeyboardPriorityWindow = NULL;
HWND hMousePriorityWindow = NULL;
UINT UpdateRectMessage = 0;
UINT CopyRectMessage = 0;
UINT MouseMoveMessage = 0;
UINT LocalMouseMessage = 0;
UINT LocalKeyboardMessage = 0;
HHOOK hCallWndHook = NULL; // Handle to the CallWnd hook
HHOOK hGetMsgHook = NULL; // Handle to the GetMsg hook
HHOOK hDialogMsgHook = NULL; // Handle to the DialogMsg hook
HHOOK hLLKeyboardHook = NULL; // Handle to LowLevel kbd hook
HHOOK hLLMouseHook = NULL; // Handle to LowLevel mouse hook
HHOOK hLLKeyboardPrHook = NULL; // Handle to LowLevel kbd hook for local event priority
HHOOK hLLMousePrHook = NULL; // Handle to LowLevel mouse hook for local event priority
HHOOK hKeyboardHook = NULL; // Handle to kbd hook
HHOOK hMouseHook = NULL; // Handle to mouse hook
#pragma data_seg( )
#else
#include "SharedData.h"
#endif // _MSC_VER
/////////////////////////////////////////////////////////////////////////////
// Per-instance DLL variables
const char sPrefSegment[] = "Application_Prefs\\";
char *sModulePrefs = NULL; // Name of the module that created us
BOOL prf_use_GetUpdateRect = FALSE; // Use the GetUpdateRect paint mode
BOOL prf_use_Timer = FALSE; // Use Timer events to trigger updates
BOOL prf_use_KeyPress = FALSE; // Use keyboard events
BOOL prf_use_LButtonUp = TRUE; // Use left mouse button up events
BOOL prf_use_MButtonUp = FALSE; // Use middle mouse button up events
BOOL prf_use_RButtonUp = FALSE; // Use right mouse button up events
BOOL prf_use_Deferral = FALSE; // Use deferred updates
HKEY hModuleKey = NULL; // Key used to save settings
HINSTANCE hInstance = NULL; // This instance of the DLL
BOOL HookMaster = FALSE; // Is this instance veneto itself?
BOOL appHookedOK = FALSE; // Did InitInstance succeed?
/////////////////////////////////////////////////////////////////////////////
// Registered messages & atoms to be used by VNCHooks.DLL
// Messages
const UINT VNC_DEFERRED_UPDATE = RegisterWindowMessage("VNCHooks.Deferred.UpdateMessage");
// Atoms
const char *VNC_WINDOWPOS_ATOMNAME = "VNCHooks.CopyRect.WindowPos";
const char *VNC_POPUPSELN_ATOMNAME = "VNCHooks.PopUpMenu.Selected";
ATOM VNC_WINDOWPOS_ATOM = NULL;
ATOM VNC_POPUPSELN_ATOM = NULL;
/////////////////////////////////////////////////////////////////////////////
// The DLL functions
// Forward definition of hook procedures
BOOL HookHandle(UINT msg, HWND hWnd, WPARAM wParam, LPARAM lParam);
LRESULT CALLBACK CallWndProc (int nCode, WPARAM wParam, LPARAM lParam);
LRESULT CALLBACK GetMessageProc(int nCode, WPARAM wParam, LPARAM lParam);
LRESULT CALLBACK DialogMessageProc(int nCode, WPARAM wParam, LPARAM lParam);
LRESULT CALLBACK LowLevelKeyboardFilterProc(int nCode, WPARAM wParam, LPARAM lParam);
LRESULT CALLBACK LowLevelMouseFilterProc(int nCode, WPARAM wParam, LPARAM lParam);
LRESULT CALLBACK LowLevelKeyboardPriorityProc(int nCode, WPARAM wParam, LPARAM lParam);
LRESULT CALLBACK LowLevelMousePriorityProc(int nCode, WPARAM wParam, LPARAM lParam);
LRESULT CALLBACK KeyboardPriorityProc(int nCode, WPARAM wParam, LPARAM lParam);
LRESULT CALLBACK MousePriorityProc(int nCode, WPARAM wParam, LPARAM lParam);
// Forward definition of setup and shutdown procedures
BOOL InitInstance();
BOOL ExitInstance();
// The DLL's main procedure
BOOL WINAPI DllMain (HANDLE hInst, ULONG ul_reason_for_call, LPVOID lpReserved)
{
// Find out why we're being called
switch (ul_reason_for_call)
{
case DLL_PROCESS_ATTACH:
#ifdef _MSC_VER
_RPT0(_CRT_WARN, "vncHooks : Hook DLL loaded\n");
#endif
// Save the instance handle
hInstance = (HINSTANCE)hInst;
// Call the initialisation function
appHookedOK = InitInstance();
// ALWAYS return TRUE to avoid breaking unhookable applications!!!
return TRUE;
case DLL_PROCESS_DETACH:
#ifdef _MSC_VER
_RPT0(_CRT_WARN, "vncHooks : Hook DLL unloaded\n");
#endif
// Call the exit function
// If the app failed to hook OK, ExitInstance will still operate OK (hopefully...)
ExitInstance();
return TRUE;
default:
return TRUE;
}
}
// Add the new hook
DllExport BOOL SetHook(HWND hWnd, UINT UpdateMsg, UINT CopyMsg, UINT MouseMsg)
{
// Don't add the hook if the window ID is NULL
if (hWnd == NULL)
return FALSE;
// Don't add a hook if there is already one added
if (hVeneto != NULL)
return FALSE;
// Add the CallWnd hook
hCallWndHook = SetWindowsHookEx(
WH_CALLWNDPROC, // Hook in before msg reaches app
(HOOKPROC) CallWndProc, // Hook procedure
hInstance, // This DLL instance
0L // Hook in to all apps
// GetCurrentThreadId() // DEBUG : HOOK ONLY WinVNC
);
// Add the GetMessage hook
hGetMsgHook = SetWindowsHookEx(
WH_GETMESSAGE, // Hook in before msg reaches app
(HOOKPROC) GetMessageProc, // Hook procedure
hInstance, // This DLL instance
0L // Hook in to all apps
// GetCurrentThreadId() // DEBUG : HOOK ONLY WinVNC
);
// Add the GetMessage hook
hDialogMsgHook = SetWindowsHookEx(
WH_SYSMSGFILTER, // Hook in dialogs, menus and scrollbars
(HOOKPROC) DialogMessageProc, // Hook procedure
hInstance, // This DLL instance
0L // Hook in to all apps
);
// Check that it worked
if ((hCallWndHook != NULL) && (hGetMsgHook != NULL) && (hDialogMsgHook != NULL))
{
hVeneto = hWnd; // Save the WinRFB window handle
UpdateRectMessage = UpdateMsg; // Save the message ID to use for rectangle updates
CopyRectMessage = CopyMsg; // Save the message ID to use for copyrect
MouseMoveMessage = MouseMsg; // Save the message ID to send when mouse moves
HookMaster = TRUE; // Set the HookMaster flag for this instance
#ifdef _MSC_VER
_RPT1(_CRT_WARN, "Window : %d\n", hWnd);
#endif
return TRUE;
}
else
{
// Stop the keyboard hook
SetKeyboardFilterHook(FALSE);
SetMouseFilterHook(FALSE);
// Kill the main hooks
if (hCallWndHook != NULL)
UnhookWindowsHookEx(hCallWndHook);
if (hGetMsgHook != NULL)
UnhookWindowsHookEx(hGetMsgHook);
if (hDialogMsgHook != NULL)
UnhookWindowsHookEx(hDialogMsgHook);
hCallWndHook = NULL;
hGetMsgHook = NULL;
hDialogMsgHook = NULL;
}
// The hook failed, so return an error code
return FALSE;
}
// EnumWindows procedure to remove the extra property we added
BOOL CALLBACK
KillPropsProc(HWND hwnd, LPARAM lParam)
{
// Remove our custom property...
RemoveProp(hwnd, (LPCTSTR) MAKEWORD(VNC_WINDOWPOS_ATOM, 0));
RemoveProp(hwnd, (LPCTSTR) MAKEWORD(VNC_POPUPSELN_ATOM, 0));
return TRUE;
}
// Remove the hook from the system
DllExport BOOL UnSetHook(HWND hWnd)
{
BOOL unHooked = TRUE;
// Remove the extra property value from all local windows
EnumWindows((WNDENUMPROC) &KillPropsProc, NULL);
// Stop the keyboard & mouse hooks
unHooked = unHooked && SetKeyboardFilterHook(FALSE);
unHooked = unHooked && SetMouseFilterHook(FALSE);
// Is the window handle valid?
if (hWnd == NULL)
MessageBox(NULL, "Window pointer is null", "Message", MB_OK);
// Is the correct application calling UnSetHook?
if (hWnd != hVeneto)
return FALSE;
// Unhook the procs
if (hCallWndHook != NULL)
{
unHooked = unHooked && UnhookWindowsHookEx(hCallWndHook);
hCallWndHook = NULL;
}
if (hGetMsgHook != NULL)
{
unHooked = unHooked && UnhookWindowsHookEx(hGetMsgHook);
hGetMsgHook = NULL;
}
if (hDialogMsgHook != NULL)
{
unHooked = unHooked && UnhookWindowsHookEx(hDialogMsgHook);
hDialogMsgHook = NULL;
}
// If we managed to unhook then reset
if (unHooked)
{
hVeneto = NULL;
HookMaster = FALSE;
}
return unHooked;
}
// Routine to start and stop local keyboard message filtering
DllExport BOOL SetKeyboardFilterHook(BOOL activate)
{
if (activate)
{
#ifdef WH_KEYBOARD_LL
if (hLLKeyboardHook == NULL)
{
// Start up the hook...
hLLKeyboardHook = SetWindowsHookEx(
WH_KEYBOARD_LL, // Hook in before msg reaches app
(HOOKPROC) LowLevelKeyboardFilterProc, // Hook procedure
hInstance, // This DLL instance
0L // Hook in to all apps
);
if (hLLKeyboardHook == NULL)
return FALSE;
}
return TRUE;
#else
#pragma message("warning:Low-Level Keyboard hook code omitted.")
return FALSE;
#endif
} else {
if (hLLKeyboardHook != NULL)
{
// Stop the hook...
if (!UnhookWindowsHookEx(hLLKeyboardHook))
return FALSE;
hLLKeyboardHook = NULL;
}
return TRUE;
}
}
DllExport BOOL SetKeyboardPriorityLLHook(HWND hwnd, BOOL activate, UINT LocalKbdMsg)
{
LocalKeyboardMessage = LocalKbdMsg;
if (activate)
{
#ifdef WH_KEYBOARD_LL
if (hLLKeyboardPrHook == NULL)
{
// save the window handle
hKeyboardPriorityWindow = hwnd;
// Start up the hook...
hLLKeyboardPrHook = SetWindowsHookEx(
WH_KEYBOARD_LL, // Hook in before msg reaches app
(HOOKPROC) LowLevelKeyboardPriorityProc, // Hook procedure
hInstance, // This DLL instance
0L // Hook in to all apps
);
if (hLLKeyboardPrHook == NULL)
return FALSE;
}
return TRUE;
#else
#pragma message("warning:Low-Level Keyboard hook code omitted.")
return FALSE;
#endif
} else {
if (hLLKeyboardPrHook != NULL)
{
// Stop the hook...
if (!UnhookWindowsHookEx(hLLKeyboardPrHook))
return FALSE;
// reset the hook and window handle
hKeyboardPriorityWindow = NULL;
hLLKeyboardPrHook = NULL;
}
return TRUE;
}
}
// Routine to start and stop local mouse message filtering
DllExport BOOL SetMouseFilterHook(BOOL activate)
{
if (activate)
{
#ifdef WH_MOUSE_LL
if (hLLMouseHook == NULL)
{
// Start up the hook...
hLLMouseHook = SetWindowsHookEx(
WH_MOUSE_LL, // Hook in before msg reaches app
(HOOKPROC) LowLevelMouseFilterProc, // Hook procedure
hInstance, // This DLL instance
0L // Hook in to all apps
);
if (hLLMouseHook == NULL)
return FALSE;
}
return TRUE;
#else
#pragma message("warning:Low-Level Mouse hook code omitted.")
return FALSE;
#endif
} else {
if (hLLMouseHook != NULL)
{
// Stop the hook...
if (!UnhookWindowsHookEx(hLLMouseHook))
return FALSE;
hLLMouseHook = NULL;
}
return TRUE;
}
}
DllExport BOOL SetMousePriorityLLHook(HWND hwnd, BOOL activate, UINT LocalMouseMsg)
{
LocalMouseMessage = LocalMouseMsg;
if (activate)
{
#ifdef WH_MOUSE_LL
if (hLLMousePrHook == NULL)
{
// save the window handle
hMousePriorityWindow = hwnd;
// Start up the hook...
hLLMousePrHook = SetWindowsHookEx(
WH_MOUSE_LL, // Hook in before msg reaches app
(HOOKPROC) LowLevelMousePriorityProc, // Hook procedure
hInstance, // This DLL instance
0L // Hook in to all apps
);
if (hLLMousePrHook == NULL)
return FALSE;
}
return TRUE;
#else
#pragma message("warning:Low-Level Mouse hook code omitted.")
return FALSE;
#endif
} else {
if (hLLMousePrHook != NULL)
{
// Stop the hook...
if (!UnhookWindowsHookEx(hLLMousePrHook))
return FALSE;
// reset the hook and window handle
hMousePriorityWindow = NULL;
hLLMousePrHook = NULL;
}
return TRUE;
}
}
// Routine to start and stop local keyboard message filtering
DllExport BOOL SetKeyboardPriorityHook(HWND hwnd, BOOL activate, UINT LocalKbdMsg)
{
LocalKeyboardMessage = LocalKbdMsg;
if (activate)
{
if (hKeyboardHook == NULL)
{
// save the window handle
hKeyboardPriorityWindow = hwnd;
// Start up the hook...
hKeyboardHook = SetWindowsHookEx(
WH_KEYBOARD, // Hook in before msg reaches app
(HOOKPROC) KeyboardPriorityProc,// Hook procedure
hInstance, // This DLL instance
0L // Hook in to all apps
);
if (hKeyboardHook == NULL)
return FALSE;
}
return TRUE;
} else {
if (hKeyboardHook != NULL)
{
// Stop the hook...
if (!UnhookWindowsHookEx(hKeyboardHook))
return FALSE;
// reset the hook and window handle
hKeyboardPriorityWindow = NULL;
hKeyboardHook = NULL;
}
return TRUE;
}
}
// Routine to start and stop local mouse message filtering
DllExport BOOL SetMousePriorityHook(HWND hwnd, BOOL activate, UINT LocalMouseMsg)
{
LocalMouseMessage = LocalMouseMsg;
if (activate)
{
if (hMouseHook == NULL)
{
// save the window handle
hMousePriorityWindow = hwnd;
// Start up the hook...
hMouseHook = SetWindowsHookEx(
WH_MOUSE, // Hook in before msg reaches app
(HOOKPROC) MousePriorityProc, // Hook procedure
hInstance, // This DLL instance
0L // Hook in to all apps
);
if (hMouseHook == NULL)
return FALSE;
}
return TRUE;
} else {
if (hMouseHook != NULL)
{
// Stop the hook...
if (!UnhookWindowsHookEx(hMouseHook))
return FALSE;
// reset the hook and window handle
hMousePriorityWindow = NULL;
hMouseHook = NULL;
}
return TRUE;
}
}
// Routine to get the window's client rectangle, in screen coordinates
inline BOOL GetAbsoluteClientRect(HWND hwnd, RECT *rect)
{
POINT topleft;
topleft.x = 0;
topleft.y = 0;
// Get the client rectangle size
if (!GetClientRect(hwnd, rect))
return FALSE;
// Get the client rectangle position
if (!ClientToScreen(hwnd, &topleft))
return FALSE;
// Now adjust the window rectangle
rect->left += topleft.x;
rect->top += topleft.y;
rect->right += topleft.x;
rect->bottom += topleft.y;
return TRUE;
}
// Routine to send a CopyRect message to WinVNC
inline void SendCopyWindowRect(HWND hWnd)
{
WPARAM vwParam;
// All we send back is the handle of the window to be moved
vwParam = (LPARAM) hWnd;
// Send the update to Veneto
PostMessage(
hVeneto,
CopyRectMessage,
vwParam,
0
);
}
// Routine to send an UpdateRect message to Veneto
inline void SendUpdateRect(SHORT x, SHORT y, SHORT x2, SHORT y2)
{
WPARAM vwParam;
LPARAM vlParam;
vwParam = MAKELONG(x, y);
vlParam = MAKELONG(x2, y2);
// Send the update to Veneto
PostMessage(
hVeneto,
UpdateRectMessage,
vwParam,
vlParam
);
}
// Send a window's position to Veneto
inline void SendWindowRect(HWND hWnd)
{
RECT wrect;
// Get the rectangle position
if (GetWindowRect(hWnd, &wrect) && IsWindowVisible(hWnd))
{
// Send the position
SendUpdateRect(
(SHORT) wrect.left,
(SHORT) wrect.top,
(SHORT) wrect.right,
(SHORT) wrect.bottom
);
}
}
// Send a deferred message into this Window's message queue, so that
// we'll intercept it again only after the message that triggered it has been
// handled
inline void SendDeferredUpdateRect(HWND hWnd, SHORT x, SHORT y, SHORT x2, SHORT y2)
{
WPARAM vwParam;
LPARAM vlParam;
vwParam = MAKELONG(x, y);
vlParam = MAKELONG(x2, y2);
if (prf_use_Deferral)
{
// Send the update back to the window
PostMessage(
hWnd,
VNC_DEFERRED_UPDATE,
vwParam,
vlParam
);
}
else
{
// Send the update to WinRFB
PostMessage(
hVeneto,
UpdateRectMessage,
vwParam,
vlParam
);
}
}
inline void SendDeferredWindowRect(HWND hWnd)
{
RECT wrect;
// Get the rectangle position
if (::GetWindowRect(hWnd, &wrect) && ::IsWindowVisible(hWnd))
{
// Send the position
SendDeferredUpdateRect(
hWnd,
(SHORT) wrect.left,
(SHORT) wrect.top,
(SHORT) wrect.right,
(SHORT) wrect.bottom
);
}
}
inline void SendDeferredBorderRect(HWND hWnd)
{
RECT wrect;
RECT crect;
// Get the rectangle position
if (GetWindowRect(hWnd, &wrect) && ::IsWindowVisible(hWnd))
{
// Get the client rectangle position
if (GetAbsoluteClientRect(hWnd, &crect))
{
// Send the four border rectangles
SendDeferredUpdateRect(hWnd, (SHORT) wrect.left, (SHORT) wrect.top, (SHORT) wrect.right, (SHORT) crect.top);
SendDeferredUpdateRect(hWnd, (SHORT) wrect.left, (SHORT) wrect.top, (SHORT) crect.left, (SHORT) wrect.bottom);
SendDeferredUpdateRect(hWnd, (SHORT) wrect.left, (SHORT) crect.bottom, (SHORT) wrect.right, (SHORT) wrect.bottom);
SendDeferredUpdateRect(hWnd, (SHORT) crect.right, (SHORT) wrect.top, (SHORT) wrect.right, (SHORT) wrect.bottom);
}
}
}
// Generic hook-handler
inline BOOL HookHandle(UINT MessageId, HWND hWnd, WPARAM wParam, LPARAM lParam)
{
////////////////////////////////////////////////////////////////
// *** HANDLE DEFERRED UPDATES ***
// Is this a deferred-update message?
if (MessageId == VNC_DEFERRED_UPDATE)
{
// NOTE : NEVER use the SendDeferred- routines to send updates
// from here, or you'll get an infinite loop....!
// NB : The format of DEFERRED_UPDATE matches that of UpdateRectMessage,
// so just send the exact same message data to WinRFB:
PostMessage(
hVeneto,
UpdateRectMessage,
wParam,
lParam
);
return FALSE;
}
// *** Could use WM_COPYDATA to send data to WinVNC
/*
if (GetClassLong(hWnd, GCW_ATOM) == 32768)
{
_RPT4(_CRT_WARN, "DBG : popup menu message (hwnd=%d, msg=%d, l=%d, w=%d)\n",
hWnd, MessageId, lParam, wParam);
}
*/
////////////////////////////////////////////////////////////////
// *** UPDATE-TRIGGERING MESSAGES ***
// Do something dependent upon message type
switch (MessageId)
{
////////////////////////////////////////////////////////////////
// Messages indicating only a border repaint.
case WM_NCPAINT:
case WM_NCACTIVATE:
SendDeferredBorderRect(hWnd);
break;
////////////////////////////////////////////////////////////////
// Messages indicating a client area repaint
case WM_CHAR:
case WM_KEYUP: // Handle key-presses
if (prf_use_KeyPress)
SendDeferredWindowRect(hWnd);
break;
case WM_LBUTTONUP: // Handle LMB clicks
if (prf_use_LButtonUp)
SendDeferredWindowRect(hWnd);
break;
case WM_MBUTTONUP: // Handle MMB clicks
if (prf_use_MButtonUp)
SendDeferredWindowRect(hWnd);
break;
case WM_RBUTTONUP: // Handle RMB clicks
if (prf_use_RButtonUp)
SendDeferredWindowRect(hWnd);
break;
case WM_TIMER:
if (prf_use_Timer)
SendDeferredWindowRect(hWnd);
break;
case WM_HSCROLL:
case WM_VSCROLL:
if (((int) LOWORD(wParam) == SB_THUMBTRACK) || ((int) LOWORD(wParam) == SB_ENDSCROLL))
SendDeferredWindowRect(hWnd);
break;
case 485: // HACK to handle popup menus
{
// Get the old popup menu selection value
HANDLE prop = GetProp(hWnd, (LPCTSTR) MAKELONG(VNC_POPUPSELN_ATOM, 0));
if (prop != (HANDLE) wParam)
{
// It did, so update the menu & the selection value
SendDeferredWindowRect(hWnd);
SetProp(hWnd,
(LPCTSTR) MAKELONG(VNC_POPUPSELN_ATOM, 0),
(HANDLE) wParam);
}
}
break;
////////////////////////////////////////////////////////////////
// Messages indicating a full window update
case WM_SYSCOLORCHANGE:
case WM_PALETTECHANGED:
case WM_SETTEXT:
case WM_ENABLE:
case BM_SETCHECK:
case BM_SETSTATE:
case EM_SETSEL:
//case WM_MENUSELECT:
SendDeferredWindowRect(hWnd);
break;
////////////////////////////////////////////////////////////////
// Messages indicating that an area of the window needs updating
// Uses GetUpdateRect to find out which
case WM_PAINT:
if (prf_use_GetUpdateRect)
{
HRGN region;
region = CreateRectRgn(0, 0, 0, 0);
// Get the affected region
if (GetUpdateRgn(hWnd, region, FALSE) != ERROR)
{
int buffsize;
UINT x;
RGNDATA *buff;
POINT TopLeft;
// Get the top-left point of the client area
TopLeft.x = 0;
TopLeft.y = 0;
if (!ClientToScreen(hWnd, &TopLeft))
break;
// Get the size of buffer required
buffsize = GetRegionData(region, 0, 0);
if (buffsize != 0)
{
buff = (RGNDATA *) new BYTE [buffsize];
if (buff == NULL)
break;
// Now get the region data
if(GetRegionData(region, buffsize, buff))
{
for (x=0; x<(buff->rdh.nCount); x++)
{
// Obtain the rectangles from the list
RECT *urect = (RECT *) (((BYTE *) buff) + sizeof(RGNDATAHEADER) + (x * sizeof(RECT)));
SendDeferredUpdateRect(
hWnd,
(SHORT) (TopLeft.x + urect->left),
(SHORT) (TopLeft.y + urect->top),
(SHORT) (TopLeft.x + urect->right),
(SHORT) (TopLeft.y + urect->bottom)
);
}
}
delete [] buff;
}
}
// Now free the region
if (region != NULL)
DeleteObject(region);
}
else
SendDeferredWindowRect(hWnd);
break;
////////////////////////////////////////////////////////////////
// Messages indicating full repaint of this and a different window
// Send the new position of the window
case WM_WINDOWPOSCHANGING:
if (IsWindowVisible(hWnd))
SendWindowRect(hWnd);
break;
case WM_WINDOWPOSCHANGED:
if (IsWindowVisible(hWnd))
SendDeferredWindowRect(hWnd);
break;
////////////////////////////////////////////////////////////////
// WinRFB also wants to know about mouse movement
case WM_NCMOUSEMOVE:
case WM_MOUSEMOVE:
// Inform WinRFB that the mouse has moved and pass it the current cursor handle
PostMessage(
hVeneto,
MouseMoveMessage,
(ULONG) GetCursor(),
0
);
break;
////////////////////////////////////////////////////////////////
// VNCHOOKS PROPERTIES HANDLING WINDOWS
case WM_DESTROY:
RemoveProp(hWnd, (LPCTSTR) MAKEWORD(VNC_WINDOWPOS_ATOM, 0));
RemoveProp(hWnd, (LPCTSTR) MAKEWORD(VNC_POPUPSELN_ATOM, 0));
break;
}
return TRUE;
}
// Hook procedure for CallWindow hook
LRESULT CALLBACK CallWndProc(int nCode, WPARAM wParam, LPARAM lParam)
{
// Do we have to handle this message?
if (nCode == HC_ACTION)
{
// Process the hook if the Veneto window handle is valid
if (hVeneto != NULL)
{
CWPSTRUCT *cwpStruct = (CWPSTRUCT *) lParam;
HookHandle(cwpStruct->message, cwpStruct->hwnd, cwpStruct->wParam, cwpStruct->lParam);
}
}
// Call the next handler in the chain
return CallNextHookEx (hCallWndHook, nCode, wParam, lParam);
}
// Hook procedure for GetMessageProc hook
LRESULT CALLBACK GetMessageProc(int nCode, WPARAM wParam, LPARAM lParam)
{
// Do we have to handle this message?
if (nCode == HC_ACTION)
{
// Process the hook only if the Veneto window is valid
if (hVeneto != NULL)
{
MSG *msg = (MSG *) lParam;
// Only handle application messages if they're being removed:
if (wParam & PM_REMOVE)
{
// Handle the message
HookHandle(msg->message, msg->hwnd, msg->wParam, msg->lParam);
}
}
}
// Call the next handler in the chain
return CallNextHookEx (hGetMsgHook, nCode, wParam, lParam);
}
// Hook procedure for DialogMessageProc hook
LRESULT CALLBACK DialogMessageProc(int nCode, WPARAM wParam, LPARAM lParam)
{
// Do we have to handle this message?
if (nCode >= 0)
{
// Process the hook only if the Veneto window is valid
if (hVeneto != NULL)
{
MSG *msg = (MSG *) lParam;
// Handle the message
HookHandle(msg->message, msg->hwnd, msg->wParam, msg->lParam);
}
}
// Call the next handler in the chain
return CallNextHookEx (hGetMsgHook, nCode, wParam, lParam);
}
// Hook procedure for LowLevel Keyboard filtering
#ifdef WH_KEYBOARD_LL
LRESULT CALLBACK LowLevelKeyboardFilterProc(int nCode, WPARAM wParam, LPARAM lParam)
{
// Are we expected to handle this callback?
if (nCode == HC_ACTION)
{
// Is this keyboard event "real" or "injected"
// i.e. hardware or software-produced?
KBDLLHOOKSTRUCT *hookStruct = (KBDLLHOOKSTRUCT*)lParam;
if (!(hookStruct->flags & LLKHF_INJECTED)) {
// Message was not injected - reject it!
return TRUE;
}
}
// Otherwise, pass on the message
return CallNextHookEx(hLLKeyboardHook, nCode, wParam, lParam);
}
LRESULT CALLBACK LowLevelKeyboardPriorityProc(int nCode, WPARAM wParam, LPARAM lParam)
{
// Are we expected to handle this callback?
// do we have a target window handle?
if (nCode == HC_ACTION && hKeyboardPriorityWindow != NULL)
{
// Is this keyboard event "real" or "injected"
// i.e. hardware or software-produced?
KBDLLHOOKSTRUCT *hookStruct = (KBDLLHOOKSTRUCT*)lParam;
if (!(hookStruct->flags & LLKHF_INJECTED)) {
// Message was not injected - send RFB_LOCAL_KEYBOARD msg!
// Remote event will be blocked
PostMessage(
hKeyboardPriorityWindow,
LocalKeyboardMessage,
0,
0
);
}
}
// Otherwise, pass on the message
return CallNextHookEx(hLLKeyboardPrHook, nCode, wParam, lParam);
}
#endif
// Hook procedure for LowLevel Mouse filtering
#ifdef WH_MOUSE_LL
LRESULT CALLBACK LowLevelMouseFilterProc(int nCode, WPARAM wParam, LPARAM lParam)
{
// Are we expected to handle this callback?
if (nCode == HC_ACTION)
{
// Is this mouse event "real" or "injected"
// i.e. hardware or software-produced?
MSLLHOOKSTRUCT *hookStruct = (MSLLHOOKSTRUCT*)lParam;
if (!(hookStruct->flags & LLMHF_INJECTED)) {
return TRUE;
}
}
// Otherwise, pass on the message
return CallNextHookEx(hLLMouseHook, nCode, wParam, lParam);
}
LRESULT CALLBACK LowLevelMousePriorityProc(int nCode, WPARAM wParam, LPARAM lParam)
{
// Are we expected to handle this callback?
// do we have a target window handle?
if (nCode == HC_ACTION && hMousePriorityWindow != NULL)
{
// Is this mouse event "real" or "injected"
// i.e. hardware or software-produced?
MSLLHOOKSTRUCT *hookStruct = (MSLLHOOKSTRUCT*)lParam;
if (!(hookStruct->flags & LLMHF_INJECTED)) {
// Message was not injected - send RFB_LOCAL_MOUSE msg!
// Remote event will be blocked
PostMessage(
hMousePriorityWindow,
LocalMouseMessage,
0,
0
);
}
}
// Otherwise, pass on the message
return CallNextHookEx(hLLMousePrHook, nCode, wParam, lParam);
}
#endif
LRESULT CALLBACK KeyboardPriorityProc(int nCode, WPARAM wParam, LPARAM lParam)
{
// Are we expected to handle this callback?
// do we have a target window handle?
if (nCode == HC_ACTION && hKeyboardPriorityWindow != NULL)
{
PostMessage(
hKeyboardPriorityWindow,
LocalKeyboardMessage,
0,
0
);
}
return CallNextHookEx(hKeyboardHook, nCode, wParam, lParam);
}
LRESULT CALLBACK MousePriorityProc(int nCode, WPARAM wParam, LPARAM lParam)
{
// Are we expected to handle this callback?
// do we have a target window handle?
if (nCode == HC_ACTION && hMousePriorityWindow != NULL)
{
if ( (wParam == WM_LBUTTONDOWN) || (wParam == WM_RBUTTONDOWN) || (wParam == WM_MBUTTONDOWN) || (wParam == WM_MOUSEMOVE) )
PostMessage(
hMousePriorityWindow,
LocalMouseMessage,
0,
0
);
}
return CallNextHookEx(hMouseHook, nCode, wParam, lParam);
}
char * NameFromPath(const char *path)
{
int x;
int l = strlen(path);
char *temp = NULL;
// Find the file part of a filename
for (x=l-1; x>0; x--)
{
if (path[x] == '\\')
{
temp = strdup(&(path[x+1]));
break;
}
}
// If we didn't fine a \ then just return a copy of the original
if (temp == NULL)
temp = strdup(path);
return temp;
}
/////////////////////////////////////////////////////////////////////////////
// Initialise / Exit routines.
// These functions handle the update settings for any apps used with WinVNC.
static const TCHAR szSoftware[] = "Software";
static const TCHAR szCompany[] = "ORL";
static const TCHAR szProfile[] = "VNCHooks";
HKEY GetRegistryKey()
{
HKEY hAppKey = NULL;
HKEY hSoftKey = NULL;
HKEY hCompanyKey = NULL;
if (RegOpenKeyEx(HKEY_CURRENT_USER, szSoftware, 0, KEY_WRITE|KEY_READ,
&hSoftKey) == ERROR_SUCCESS)
{
DWORD dw;
if (RegCreateKeyEx(hSoftKey, szCompany, 0, REG_NONE,
REG_OPTION_NON_VOLATILE, KEY_WRITE|KEY_READ, NULL,
&hCompanyKey, &dw) == ERROR_SUCCESS)
{
RegCreateKeyEx(hCompanyKey, szProfile, 0, REG_NONE,
REG_OPTION_NON_VOLATILE, KEY_WRITE|KEY_READ, NULL,
&hAppKey, &dw);
}
}
if (hSoftKey != NULL)
RegCloseKey(hSoftKey);
if (hCompanyKey != NULL)
RegCloseKey(hCompanyKey);
return hAppKey;
}
HKEY GetModuleKey(const char *proc_name)
{
HKEY hModule = NULL;
// Work out the registry key to save this under
sModulePrefs = (char *) malloc(strlen(sPrefSegment) + strlen(proc_name) + 1);
if (sModulePrefs == NULL)
return FALSE;
sprintf(sModulePrefs, "%s%s", sPrefSegment, proc_name);
// Check whether the library's entry exists!
HKEY hAppKey = GetRegistryKey();
if (hAppKey == NULL)
return NULL;
// Attempt to open the section for this application
if (RegOpenKeyEx(hAppKey,
sModulePrefs,
0, KEY_WRITE|KEY_READ,
&hModule
) != ERROR_SUCCESS)
{
// Cut off the app directory and just use the name
char *file_name = NameFromPath(proc_name);
if (file_name == NULL)
{
RegCloseKey(hAppKey);
return NULL;
}
// Adjust the moduleprefs name
sprintf(sModulePrefs, "%s%s", sPrefSegment, file_name);
free(file_name);
// Now get the module key again
DWORD dw;
if (RegCreateKeyEx(hAppKey,
sModulePrefs,
0, REG_NONE, REG_OPTION_NON_VOLATILE,
KEY_WRITE|KEY_READ,
NULL,
&hModule,
&dw) != ERROR_SUCCESS)
{
// Couldn't find/create the key - fail!
RegCloseKey(hAppKey);
return NULL;
}
}
// Close the application registry key
RegCloseKey(hAppKey);
return hModule;
}
int GetProfileInt(LPTSTR key, int def)
{
DWORD type;
DWORD value;
ULONG size = sizeof(value);
if (RegQueryValueEx(
hModuleKey,
key,
NULL,
&type,
(unsigned char *)&value,
&size) == ERROR_SUCCESS)
{
// Is the value of the right type?
if (type != REG_DWORD)
{
return def;
}
else
{
return value;
}
}
else
{
return def;
}
}
void WriteProfileInt(LPTSTR key, int value)
{
RegSetValueEx(
hModuleKey,
key,
0,
REG_DWORD,
(unsigned char *)&value,
sizeof(value));
}
BOOL InitInstance()
{
// Create the global atoms
VNC_WINDOWPOS_ATOM = GlobalAddAtom(VNC_WINDOWPOS_ATOMNAME);
if (VNC_WINDOWPOS_ATOM == NULL)
return FALSE;
VNC_POPUPSELN_ATOM = GlobalAddAtom(VNC_POPUPSELN_ATOMNAME);
if (VNC_POPUPSELN_ATOM == NULL)
return FALSE;
// Get the module name
char proc_name[_MAX_PATH];
DWORD size;
// Attempt to get the program/module name
if ((size = GetModuleFileName(
GetModuleHandle(NULL),
(char *) &proc_name,
_MAX_PATH
)) == 0)
return FALSE;
// Get the key for the module
hModuleKey = GetModuleKey(proc_name);
if (hModuleKey == NULL)
return FALSE;
// Read in the prefs
prf_use_GetUpdateRect = GetProfileInt(
"use_GetUpdateRect",
TRUE
);
prf_use_Timer = GetProfileInt(
"use_Timer",
FALSE
);
prf_use_KeyPress = GetProfileInt(
"use_KeyPress",
TRUE
);
prf_use_LButtonUp = GetProfileInt(
"use_LButtonUp",
TRUE
);
prf_use_MButtonUp = GetProfileInt(
"use_MButtonUp",
TRUE
);
prf_use_RButtonUp = GetProfileInt(
"use_RButtonUp",
TRUE
);
prf_use_Deferral = GetProfileInt(
"use_Deferral",
#ifdef HORIZONLIVE
FALSE // we use full screen polling anyway
#else
TRUE
#endif
);
return TRUE;
}
BOOL ExitInstance()
{
// Free the created atoms
if (VNC_WINDOWPOS_ATOM != NULL)
{
GlobalDeleteAtom(VNC_WINDOWPOS_ATOM);
VNC_WINDOWPOS_ATOM = NULL;
}
if (VNC_POPUPSELN_ATOM != NULL)
{
GlobalDeleteAtom(VNC_POPUPSELN_ATOM);
VNC_POPUPSELN_ATOM = NULL;
}
// Write the module settings to disk
if (sModulePrefs != NULL)
{
WriteProfileInt(
"use_GetUpdateRect",
prf_use_GetUpdateRect
);
WriteProfileInt(
"use_Timer",
prf_use_Timer
);
WriteProfileInt(
"use_KeyPress",
prf_use_KeyPress
);
WriteProfileInt(
"use_LButtonUp",
prf_use_LButtonUp
);
WriteProfileInt(
"use_MButtonUp",
prf_use_MButtonUp
);
WriteProfileInt(
"use_RButtonUp",
prf_use_RButtonUp
);
WriteProfileInt(
"use_Deferral",
prf_use_Deferral
);
free(sModulePrefs);
sModulePrefs = NULL;
}
// Close the registry key for this module
if (hModuleKey != NULL)
RegCloseKey(hModuleKey);
return TRUE;
}
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