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// |
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// Copyright (C) 2004-2005 Martin Wickett |
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// |
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|
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#include "hookdll.h" |
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#include <windows.h> |
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#include <winuser.h> |
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#include <stdio.h> |
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#include <stdarg.h> |
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|
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#include "wtsapi32.h" |
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#include "Cchannel.h" |
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|
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#define DLL_EXPORT extern "C" __declspec(dllexport) |
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|
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// Shared DATA |
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#pragma data_seg ( "SHAREDDATA" ) |
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|
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// this is the total number of processes this dll is currently attached to |
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int iInstanceCount = 0; |
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HWND hWnd = 0; |
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|
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#pragma data_seg () |
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|
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#pragma comment(linker, "/section:SHAREDDATA,rws") |
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|
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#define snprintf _snprintf |
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|
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bool bHooked = false; |
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bool bHooked2 = false; |
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bool bHooked3 = false; |
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HHOOK hhook = 0; //cbt |
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HHOOK hhook2 = 0; //shell |
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HHOOK hhook3 = 0; //wnd proc |
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HINSTANCE hInst = 0; |
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HANDLE m_vcHandle = 0; |
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|
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|
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void SendDebug( char *format, ... ) |
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{ |
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va_list argp; |
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char buf [ 256 ]; |
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|
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va_start( argp, format ); |
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vsprintf( buf, format, argp ); |
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va_end( argp ); |
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|
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if ( ChannelIsOpen() ) { |
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WriteToChannel( "DEBUG1," ); |
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WriteToChannel( buf ); |
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WriteToChannel( "\n" ); |
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} |
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} |
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|
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|
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|
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BOOL APIENTRY DllMain( HINSTANCE hinstDLL, DWORD ul_reason_for_call, LPVOID lpReserved ) |
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{ |
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switch ( ul_reason_for_call ) { |
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case DLL_PROCESS_ATTACH: { |
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// remember our instance handle |
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hInst = hinstDLL; |
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++iInstanceCount; |
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OpenVirtualChannel(); |
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break; |
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} |
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|
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case DLL_THREAD_ATTACH: |
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break; |
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case DLL_THREAD_DETACH: |
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break; |
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case DLL_PROCESS_DETACH: { |
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--iInstanceCount; |
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CloseVirtualChannel(); |
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} |
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break; |
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} |
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|
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return TRUE; |
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} |
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|
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LRESULT CALLBACK CallWndProc( int nCode, WPARAM wParam, LPARAM lParam ) |
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{ |
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if ( nCode < 0 ) { |
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return CallNextHookEx( hhook3, nCode, wParam, lParam ); |
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} |
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|
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PCHAR buffer = NULL; |
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char windowTitle[ 150 ] = { "" |
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}; |
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HWND windowHandle = NULL; |
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HWND windowHandle2 = NULL; |
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char result[ 255 ] = { "" |
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}; |
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char strWindowId[ 25 ]; |
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char type[ 25 ]; |
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|
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LONG b, t, l, r; |
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char strX[ 5 ]; |
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char strY[ 5 ]; |
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char strW[ 5 ]; |
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char strH[ 5 ]; |
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|
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CWPSTRUCT *details = ( CWPSTRUCT * ) lParam; |
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CREATESTRUCT *cs = ( CREATESTRUCT * ) details->lParam; |
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LONG dwStyle = GetWindowLong( details->hwnd, GWL_STYLE ); |
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WINDOWPOS *wp = ( WINDOWPOS * ) details->lParam; |
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RECT *rect = ( RECT * ) details->lParam; |
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|
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switch ( details->message ) { |
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|
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case WM_SIZING: |
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case WM_MOVING: |
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if ( !( dwStyle & WS_VISIBLE ) ) |
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break; |
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|
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if ( !( dwStyle & WS_DLGFRAME ) ) |
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break; |
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|
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snprintf( result, sizeof( result ), |
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"POSITION1,0x%x,%d,%d,%d,%d,0x%x", |
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( int ) details->hwnd, |
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rect->left, rect->top, |
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rect->right - rect->left, |
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rect->bottom - rect->top, |
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0 ); |
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result[ sizeof( result ) - 1 ] = '\0'; |
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buffer = result; |
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break; |
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|
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|
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/* Note: WM_WINDOWPOSCHANGING/WM_WINDOWPOSCHANGED are |
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strange. Sometimes, for example when bringing up the |
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Notepad About dialog, only an WM_WINDOWPOSCHANGING is |
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sent. In some other cases, for exmaple when opening |
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Format->Text in Notepad, both events are sent. Also, for |
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some reason, when closing the Notepad About dialog, an |
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WM_WINDOWPOSCHANGING event is sent which looks just like |
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the event that was sent when the About dialog was opened... */ |
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case WM_WINDOWPOSCHANGING: |
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|
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if ( !( dwStyle & WS_VISIBLE ) ) |
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break; |
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|
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if ( !( dwStyle & WS_DLGFRAME ) ) |
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break; |
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|
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if ( !( wp->flags & SWP_NOZORDER ) ) { |
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snprintf( result, sizeof( result ), |
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"ZCHANGE1,0x%x,0x%x,0x%x\n", |
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details->hwnd, |
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wp->flags & SWP_NOACTIVATE ? wp->hwndInsertAfter : 0, |
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0 ); |
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result[ sizeof( result ) - 1 ] = '\0'; |
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buffer = result; |
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} |
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break; |
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|
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|
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case WM_CREATE: |
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if ( cs->style & WS_DLGFRAME ) { |
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snprintf( result, sizeof( result ), |
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"CREATE1,0x%x,0x%x\n", |
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details->hwnd, 0 ); |
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buffer = result; |
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} |
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break; |
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|
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|
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case WM_DESTROY: |
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if ( dwStyle & WS_DLGFRAME ) { |
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sprintf( result, "WM_DESTROY:%p", details->hwnd ); |
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buffer = result; |
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} |
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|
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break; |
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|
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|
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default: |
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break; |
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} |
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|
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if ( ChannelIsOpen() ) { |
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if ( buffer != NULL ) { |
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WriteToChannel( buffer ); |
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} |
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} |
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|
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return CallNextHookEx( hhook3, nCode, wParam, lParam ); |
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} |
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|
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LRESULT CALLBACK CbtProc( int nCode, WPARAM wParam, LPARAM lParam ) |
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{ |
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if ( nCode < 0 ) { |
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return CallNextHookEx( hhook, nCode, wParam, lParam ); |
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} |
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|
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|
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PCHAR buffer = NULL; |
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|
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|
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char windowTitle[ 150 ] = { "" |
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}; |
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HWND windowHandle = NULL; |
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char result[ 255 ] = { "" |
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}; |
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char strWindowId[ 25 ]; |
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char type[ 25 ]; |
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|
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|
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LONG b, t, l, r; |
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char strW[ 5 ]; |
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char strY[ 5 ]; |
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char strX[ 5 ]; |
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char strH[ 5 ]; |
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RECT rect; |
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|
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int i = 0; //tmp |
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|
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switch ( nCode ) { |
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case HCBT_MINMAX: |
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|
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windowHandle = ( HWND ) wParam; |
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//get win name |
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GetWindowText( windowHandle, windowTitle, 150 ); |
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|
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//get an id for it |
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itoa( ( int ) windowHandle, strWindowId, 10 ); |
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|
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//get operation type(min,max). if max, do not clip at all,if min use window's previous coords |
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//codes are: |
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|
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// SW_HIDE= 0 SW_SHOWNORMAL=1 SW_NORMAL=1 SW_SHOWMINIMIZED=2 SW_SHOWMAXIMIZED=3 SW_MAXIMIZE=3 |
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// SW_SHOWNOACTIVATE=4 SW_SHOW=5 SW_MINIMIZE=6 SW_SHOWMINNOACTIVE=7 SW_SHOWNA=8 SW_RESTORE=9 |
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// SW_SHOWDEFAULT=10 SW_FORCEMINIMIZE=11 SW_MAX=11 |
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|
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itoa( ( int ) lParam, type, 10 ); |
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|
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//get coords |
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GetWindowRect( windowHandle, &rect ); |
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b = rect.bottom; |
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t = rect.top; |
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l = rect.left; |
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r = rect.right; |
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ltoa( b - t, strW, 10 ); |
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ltoa( t, strY, 10 ); |
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ltoa( r - l, strH, 10 ); |
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ltoa( l, strX, 10 ); |
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|
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//get name |
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GetWindowText( windowHandle, windowTitle, 150 ); |
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|
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////setup return string |
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strcat( result, "MSG=HCBT_MINMAX;OP=4;" ); |
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|
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// SW_SHOWNOACTIVATE=4 SW_SHOW=5 SW_MINIMIZE=6 SW_SHOWMINNOACTIVE=7 SW_SHOWNA=8 SW_RESTORE=9 |
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// SW_SHOWDEFAULT=10 SW_FORCEMINIMIZE=11 SW_MAX=11 |
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strcat( result, "ID=" ); |
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strcat( result, strWindowId ); |
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strcat( result, ";" ); |
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strcat( result, "TITLE=" ); |
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strcat( result, windowTitle ); |
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strcat( result, ";" ); |
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strcat( result, "X=" ); |
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strcat( result, strX ); |
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strcat( result, ";" ); |
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strcat( result, "Y=" ); |
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strcat( result, strY ); |
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strcat( result, ";" ); |
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strcat( result, "H=" ); |
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strcat( result, strH ); |
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strcat( result, ";" ); |
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strcat( result, "W=" ); |
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strcat( result, strW ); |
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strcat( result, ";" ); |
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strcat( result, "TYPE=" ); |
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strcat( result, type ); |
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strcat( result, "." ); |
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|
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//------------------------------------------------------------------------------------------------- |
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// code to prevent minimising windows (can be removed once minimise has been implemented) |
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//i = (int)lParam; |
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//if (i==0 || i==2 || i==6 || i==7 || i==8 || i==11) |
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//if ( i==2 || i==6 ) |
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//{ |
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// MessageBox(0,"Minimising windows is not allowed in this version. Sorry!","TS Window Clipper", MB_OK); |
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// return 1; |
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//} |
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//----------------------------------------------------------------------------------------- |
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|
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//------------------------------------------------------------------------------------------------- |
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// code to prevent maximising windows (can be removed once maximise has been implemented) |
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//i = (int)lParam; |
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//if (i==3 || i==9 || i==11) |
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//if (i==3 || i==11) |
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//{ |
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// MessageBox(0,"Maximising windows is not allowed in this version. Sorry!","TS Window Clipper", MB_OK); |
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// return 1; |
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//} |
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//----------------------------------------------------------------------------------------- |
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|
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buffer = result; |
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|
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break; |
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|
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default: |
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break; |
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} |
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|
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if ( ChannelIsOpen() ) { |
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if ( buffer != NULL ) { |
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WriteToChannel( buffer ); |
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} |
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} |
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|
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return CallNextHookEx( hhook, nCode, wParam, lParam ); |
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} |
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|
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|
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LRESULT CALLBACK ShellProc( int nCode, WPARAM wParam, LPARAM lParam ) |
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{ |
| 322 |
if ( nCode < 0 ) { |
| 323 |
return CallNextHookEx( hhook, nCode, wParam, lParam ); |
| 324 |
} |
| 325 |
|
| 326 |
if ( ChannelIsOpen() ) { |
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PCHAR buffer = NULL; |
| 328 |
|
| 329 |
char windowTitle[ 150 ] = { "" |
| 330 |
}; |
| 331 |
HWND windowHandle = NULL; |
| 332 |
char result[ 255 ] = { "" |
| 333 |
}; |
| 334 |
char strWindowId[ 25 ]; |
| 335 |
LONG b, t, l, r; |
| 336 |
char strW[ 5 ]; |
| 337 |
char strY[ 5 ]; |
| 338 |
char strX[ 5 ]; |
| 339 |
char strH[ 5 ]; |
| 340 |
RECT rect; |
| 341 |
|
| 342 |
switch ( nCode ) { |
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case HSHELL_WINDOWCREATED: |
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|
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//get window id |
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windowHandle = ( HWND ) wParam; |
| 347 |
itoa( ( int ) windowHandle, strWindowId, 10 ); |
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|
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//get coords |
| 350 |
GetWindowRect( windowHandle, &rect ); |
| 351 |
b = rect.bottom; |
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t = rect.top; |
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l = rect.left; |
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r = rect.right; |
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ltoa( b - t, strH, 10 ); |
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ltoa( t, strY, 10 ); |
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ltoa( r - l, strW, 10 ); |
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ltoa( l, strX, 10 ); |
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|
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//get name |
| 361 |
GetWindowText( windowHandle, windowTitle, 150 ); |
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|
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////setup return string |
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strcat( result, "MSG=HSHELL_WINDOWCREATED;OP=0;" ); |
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strcat( result, "ID=" ); |
| 366 |
strcat( result, strWindowId ); |
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strcat( result, ";" ); |
| 368 |
strcat( result, "TITLE=" ); |
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strcat( result, windowTitle ); |
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strcat( result, ";" ); |
| 371 |
strcat( result, "X=" ); |
| 372 |
strcat( result, strX ); |
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strcat( result, ";" ); |
| 374 |
strcat( result, "Y=" ); |
| 375 |
strcat( result, strY ); |
| 376 |
strcat( result, ";" ); |
| 377 |
strcat( result, "H=" ); |
| 378 |
strcat( result, strH ); |
| 379 |
strcat( result, ";" ); |
| 380 |
strcat( result, "W=" ); |
| 381 |
strcat( result, strW ); |
| 382 |
strcat( result, "." ); |
| 383 |
|
| 384 |
buffer = result; |
| 385 |
|
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break; |
| 387 |
|
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case HSHELL_WINDOWDESTROYED: |
| 389 |
|
| 390 |
//get window id |
| 391 |
windowHandle = ( HWND ) wParam; |
| 392 |
itoa( ( int ) windowHandle, strWindowId, 10 ); |
| 393 |
|
| 394 |
//get coords |
| 395 |
GetWindowRect( windowHandle, &rect ); |
| 396 |
b = rect.bottom; |
| 397 |
t = rect.top; |
| 398 |
l = rect.left; |
| 399 |
r = rect.right; |
| 400 |
ltoa( b - t, strH, 10 ); |
| 401 |
ltoa( t, strY, 10 ); |
| 402 |
ltoa( r - l, strW, 10 ); |
| 403 |
ltoa( l, strX, 10 ); |
| 404 |
|
| 405 |
//get name |
| 406 |
GetWindowText( windowHandle, windowTitle, 150 ); |
| 407 |
|
| 408 |
////setup return string |
| 409 |
strcat( result, "MSG=HSHELL_WINDOWDESTROYED;OP=1;" ); |
| 410 |
strcat( result, "ID=" ); |
| 411 |
strcat( result, strWindowId ); |
| 412 |
strcat( result, ";" ); |
| 413 |
strcat( result, "TITLE=" ); |
| 414 |
strcat( result, windowTitle ); |
| 415 |
strcat( result, ";" ); |
| 416 |
strcat( result, "X=" ); |
| 417 |
strcat( result, strX ); |
| 418 |
strcat( result, ";" ); |
| 419 |
strcat( result, "Y=" ); |
| 420 |
strcat( result, strY ); |
| 421 |
strcat( result, ";" ); |
| 422 |
strcat( result, "H=" ); |
| 423 |
strcat( result, strH ); |
| 424 |
strcat( result, ";" ); |
| 425 |
strcat( result, "W=" ); |
| 426 |
strcat( result, strW ); |
| 427 |
strcat( result, "." ); |
| 428 |
|
| 429 |
buffer = result; |
| 430 |
|
| 431 |
break; |
| 432 |
default: |
| 433 |
break; |
| 434 |
} |
| 435 |
|
| 436 |
if ( buffer != NULL ) { |
| 437 |
WriteToChannel( buffer ); |
| 438 |
} |
| 439 |
} |
| 440 |
|
| 441 |
return CallNextHookEx( hhook, nCode, wParam, lParam ); |
| 442 |
} |
| 443 |
|
| 444 |
DLL_EXPORT void SetCbtHook( void ) |
| 445 |
{ |
| 446 |
if ( !bHooked ) { |
| 447 |
hhook = SetWindowsHookEx( WH_CBT, ( HOOKPROC ) CbtProc, hInst, ( DWORD ) NULL ); |
| 448 |
bHooked = true; |
| 449 |
} |
| 450 |
|
| 451 |
if ( !bHooked2 ) { |
| 452 |
hhook2 = SetWindowsHookEx( WH_SHELL, ( HOOKPROC ) ShellProc, hInst, ( DWORD ) NULL ); |
| 453 |
bHooked2 = true; |
| 454 |
} |
| 455 |
|
| 456 |
if ( !bHooked3 ) { |
| 457 |
hhook3 = SetWindowsHookEx( WH_CALLWNDPROC, ( HOOKPROC ) CallWndProc, hInst, ( DWORD ) NULL ); |
| 458 |
bHooked3 = true; |
| 459 |
} |
| 460 |
} |
| 461 |
|
| 462 |
DLL_EXPORT void RemoveCbtHook( void ) |
| 463 |
{ |
| 464 |
if ( bHooked ) { |
| 465 |
UnhookWindowsHookEx( hhook ); |
| 466 |
bHooked = false; |
| 467 |
} |
| 468 |
|
| 469 |
if ( bHooked2 ) { |
| 470 |
UnhookWindowsHookEx( hhook2 ); |
| 471 |
bHooked2 = false; |
| 472 |
} |
| 473 |
|
| 474 |
if ( bHooked3 ) { |
| 475 |
UnhookWindowsHookEx( hhook3 ); |
| 476 |
bHooked3 = false; |
| 477 |
} |
| 478 |
} |
| 479 |
|
| 480 |
DLL_EXPORT int GetInstanceCount() |
| 481 |
{ |
| 482 |
return iInstanceCount; |
| 483 |
} |
| 484 |
|
| 485 |
int OpenVirtualChannel() |
| 486 |
{ |
| 487 |
m_vcHandle = WTSVirtualChannelOpen( WTS_CURRENT_SERVER_HANDLE, WTS_CURRENT_SESSION, CHANNELNAME ); |
| 488 |
|
| 489 |
if ( m_vcHandle == NULL ) { |
| 490 |
return 0; |
| 491 |
} else { |
| 492 |
return 1; |
| 493 |
} |
| 494 |
} |
| 495 |
|
| 496 |
int CloseVirtualChannel() |
| 497 |
{ |
| 498 |
BOOL result = WTSVirtualChannelClose( m_vcHandle ); |
| 499 |
|
| 500 |
m_vcHandle = NULL; |
| 501 |
|
| 502 |
if ( result ) { |
| 503 |
return 1; |
| 504 |
} else { |
| 505 |
return 0; |
| 506 |
} |
| 507 |
} |
| 508 |
|
| 509 |
int ChannelIsOpen() |
| 510 |
{ |
| 511 |
if ( m_vcHandle == NULL ) { |
| 512 |
return 0; |
| 513 |
} else { |
| 514 |
return 1; |
| 515 |
} |
| 516 |
} |
| 517 |
|
| 518 |
int WriteToChannel( PCHAR buffer ) |
| 519 |
{ |
| 520 |
PULONG bytesRead = 0; |
| 521 |
PULONG pBytesWritten = 0; |
| 522 |
|
| 523 |
BOOL result = WTSVirtualChannelWrite( m_vcHandle, buffer, ( ULONG ) strlen( buffer ), pBytesWritten ); |
| 524 |
|
| 525 |
if ( result ) { |
| 526 |
return 1; |
| 527 |
} else { |
| 528 |
return 0; |
| 529 |
} |
| 530 |
} |
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