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// |
/* -*- c-basic-offset: 8 -*- |
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// Copyright (C) 2004-2005 Martin Wickett |
rdesktop: A Remote Desktop Protocol client. |
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// |
Seamless windows - Remote server hook DLL |
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Based on code copyright (C) 2004-2005 Martin Wickett |
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Copyright (C) Peter Åstrand <astrand@cendio.se> 2005-2006 |
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Copyright (C) Pierre Ossman <ossman@cendio.se> 2006 |
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This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 2 of the License, or |
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(at your option) any later version. |
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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You should have received a copy of the GNU General Public License |
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along with this program; if not, write to the Free Software |
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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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> |
#include <stdio.h> |
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#include <stdarg.h> |
#include <stdarg.h> |
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#include "wtsapi32.h" |
#include <windows.h> |
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#include "cchannel.h" |
#include <winuser.h> |
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#include "../vchannel.h" |
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#define DLL_EXPORT __declspec(dllexport) |
#define DLL_EXPORT __declspec(dllexport) |
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#pragma data_seg ( "SHAREDDATA" ) |
#pragma data_seg ( "SHAREDDATA" ) |
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// this is the total number of processes this dll is currently attached to |
// this is the total number of processes this dll is currently attached to |
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int iInstanceCount = 0; |
int g_instance_count = 0; |
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HWND hWnd = 0; |
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#pragma data_seg () |
#pragma data_seg () |
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#pragma comment(linker, "/section:SHAREDDATA,rws") |
#pragma comment(linker, "/section:SHAREDDATA,rws") |
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#define snprintf _snprintf |
static HHOOK g_cbt_hook = NULL; |
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static HHOOK g_wndproc_hook = NULL; |
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HHOOK hCbtProc = 0; |
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HHOOK hShellProc = 0; |
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HHOOK hWndProc = 0; |
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HINSTANCE hInst = 0; |
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HANDLE m_vcHandle = 0; |
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HANDLE hMutex = 0; |
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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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sprintf( buf, "DEBUG1," ); |
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va_start( argp, format ); |
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_vsnprintf( buf + sizeof( "DEBUG1," ) - 1, |
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sizeof( buf ) - sizeof( "DEBUG1," ) + 1, format, argp ); |
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va_end( argp ); |
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WriteToChannel( buf ); |
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} |
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static HINSTANCE g_instance = NULL; |
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static HANDLE g_mutex = NULL; |
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BOOL APIENTRY DllMain( HINSTANCE hinstDLL, DWORD ul_reason_for_call, LPVOID lpReserved ) |
static void |
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update_position(HWND hwnd) |
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{ |
{ |
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switch ( ul_reason_for_call ) { |
RECT rect; |
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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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hMutex = CreateMutex( NULL, FALSE, "Local\\Seamless" ); |
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if (!hMutex) |
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return FALSE; |
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WaitForSingleObject( hMutex, INFINITE ); |
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++iInstanceCount; |
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ReleaseMutex( hMutex ); |
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OpenVirtualChannel(); |
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break; |
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case DLL_THREAD_ATTACH: |
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break; |
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case DLL_THREAD_DETACH: |
if (!GetWindowRect(hwnd, &rect)) |
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break; |
{ |
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debug("GetWindowRect failed!\n"); |
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return; |
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} |
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case DLL_PROCESS_DETACH: |
vchannel_write("POSITION,0x%p,%d,%d,%d,%d,0x%x", |
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WaitForSingleObject( hMutex, INFINITE ); |
hwnd, |
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--iInstanceCount; |
rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top, 0); |
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ReleaseMutex( hMutex ); |
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CloseVirtualChannel(); |
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CloseHandle( hMutex ); |
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break; |
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} |
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return TRUE; |
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} |
} |
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LRESULT CALLBACK CallWndProc( int nCode, WPARAM wParam, LPARAM lParam ) |
static LRESULT CALLBACK |
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wndproc_hook_proc(int code, WPARAM cur_thread, LPARAM details) |
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{ |
{ |
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char windowTitle[ 150 ] = { "" |
HWND hwnd, parent; |
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}; |
UINT msg; |
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HWND windowHandle = NULL; |
WPARAM wparam; |
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HWND windowHandle2 = NULL; |
LPARAM lparam; |
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char result[ 255 ] = { "" |
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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; |
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if ( nCode < 0 ) { |
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return CallNextHookEx( hWndProc, nCode, wParam, lParam ); |
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} |
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switch ( details->message ) { |
LONG style; |
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case WM_WINDOWPOSCHANGED: |
if (code < 0) |
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if ( dwStyle & WS_CHILD) |
goto end; |
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break; |
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hwnd = ((CWPSTRUCT *) details)->hwnd; |
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msg = ((CWPSTRUCT *) details)->message; |
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wparam = ((CWPSTRUCT *) details)->wParam; |
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lparam = ((CWPSTRUCT *) details)->lParam; |
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if ( wp->flags & SWP_SHOWWINDOW ) { |
style = GetWindowLong(hwnd, GWL_STYLE); |
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// FIXME: Now, just like create! |
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SendDebug("SWP_SHOWWINDOW for %p!", details->hwnd); |
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WriteToChannel( "CREATE1,0x%p,0x%x", details->hwnd, 0 ); |
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// FIXME: SETSTATE |
/* Docs say that WS_CHILD and WS_POPUP is an illegal combination, |
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but they exist nonetheless. */ |
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if ((style & WS_CHILD) && !(style & WS_POPUP)) |
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goto end; |
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if ( !GetWindowRect( details->hwnd, &rect ) ) { |
if (style & WS_POPUP) |
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SendDebug( "GetWindowRect failed!\n" ); |
{ |
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break; |
parent = (HWND) GetWindowLong(hwnd, GWL_HWNDPARENT); |
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} |
if (!parent) |
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WriteToChannel( "POSITION1,0x%p,%d,%d,%d,%d,0x%x", |
parent = (HWND) - 1; |
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details->hwnd, |
} |
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rect.left, rect.top, |
else |
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rect.right - rect.left, |
parent = NULL; |
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rect.bottom - rect.top, |
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0 ); |
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} |
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switch (msg) |
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{ |
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if ( wp->flags & SWP_HIDEWINDOW ) |
case WM_WINDOWPOSCHANGED: |
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WriteToChannel( "DESTROY1,0x%p,0x%x", details->hwnd, 0 ); |
{ |
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WINDOWPOS *wp = (WINDOWPOS *) lparam; |
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if (wp->flags & SWP_SHOWWINDOW) |
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{ |
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char title[150]; |
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int state; |
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if ( !( dwStyle & WS_VISIBLE ) ) |
vchannel_write("CREATE,0x%p,0x%p,0x%x", hwnd, parent, 0); |
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break; |
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if ( wp->flags & SWP_NOMOVE && wp->flags & SWP_NOSIZE ) |
GetWindowText(hwnd, title, sizeof(title)); |
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break; |
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if ( !GetWindowRect( details->hwnd, &rect ) ) { |
vchannel_write("TITLE,0x%x,%s,0x%x", hwnd, |
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SendDebug( "GetWindowRect failed!\n" ); |
vchannel_strfilter(title), 0); |
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break; |
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} |
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WriteToChannel( "POSITION1,0x%p,%d,%d,%d,%d,0x%x", |
if (style & WS_MAXIMIZE) |
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details->hwnd, |
state = 2; |
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rect.left, rect.top, |
else if (style & WS_MINIMIZE) |
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rect.right - rect.left, |
state = 1; |
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rect.bottom - rect.top, |
else |
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0 ); |
state = 0; |
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break; |
update_position(hwnd); |
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vchannel_write("STATE,0x%p,0x%x,0x%x", hwnd, state, 0); |
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} |
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/* Note: WM_WINDOWPOSCHANGING/WM_WINDOWPOSCHANGED are |
if (wp->flags & SWP_HIDEWINDOW) |
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strange. Sometimes, for example when bringing up the |
vchannel_write("DESTROY,0x%p,0x%x", hwnd, 0); |
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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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if ( dwStyle & WS_CHILD) |
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break; |
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if ( !( dwStyle & WS_VISIBLE ) ) |
if (!(style & WS_VISIBLE) || (style & WS_MINIMIZE)) |
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break; |
break; |
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if ( !( wp->flags & SWP_NOZORDER ) ) |
if (!(wp->flags & SWP_NOMOVE && wp->flags & SWP_NOSIZE)) |
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WriteToChannel( "ZCHANGE1,0x%p,0x%p,0x%x", |
update_position(hwnd); |
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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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break; |
if (!(wp->flags & SWP_NOZORDER)) |
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{ |
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vchannel_write("ZCHANGE,0x%p,0x%p,0x%x", |
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hwnd, |
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wp->flags & SWP_NOACTIVATE ? wp-> |
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hwndInsertAfter : 0, 0); |
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} |
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break; |
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} |
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case WM_SIZE: |
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if (!(style & WS_VISIBLE) || (style & WS_MINIMIZE)) |
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break; |
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update_position(hwnd); |
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break; |
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159 |
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case WM_MOVE: |
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if (!(style & WS_VISIBLE) || (style & WS_MINIMIZE)) |
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break; |
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update_position(hwnd); |
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break; |
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case WM_DESTROY: |
case WM_SETTEXT: |
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if ( dwStyle & WS_CHILD) |
{ |
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break; |
char *title; |
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if (!(style & WS_VISIBLE)) |
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break; |
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title = _strdup((char *) lparam); |
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vchannel_write("TITLE,0x%p,%s,0x%x", hwnd, |
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vchannel_strfilter(title), 0); |
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free(title); |
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break; |
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} |
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WriteToChannel( "DESTROY1,0x%p,0x%x", details->hwnd, 0 ); |
case WM_DESTROY: |
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if (!(style & WS_VISIBLE)) |
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break; |
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vchannel_write("DESTROY,0x%p,0x%x", hwnd, 0); |
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break; |
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break; |
default: |
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break; |
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} |
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end: |
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default: |
return CallNextHookEx(g_wndproc_hook, code, cur_thread, details); |
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break; |
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} |
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return CallNextHookEx( hWndProc, nCode, wParam, lParam ); |
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189 |
} |
} |
190 |
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191 |
LRESULT CALLBACK CbtProc( int nCode, WPARAM wParam, LPARAM lParam ) |
static LRESULT CALLBACK |
192 |
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cbt_hook_proc(int code, WPARAM wparam, LPARAM lparam) |
193 |
{ |
{ |
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char windowTitle[ 150 ] = { "" |
if (code < 0) |
195 |
}; |
goto end; |
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HWND windowHandle = NULL; |
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char result[ 255 ] = { "" |
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}; |
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if ( nCode < 0 ) { |
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return CallNextHookEx( hCbtProc, nCode, wParam, lParam ); |
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} |
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switch ( nCode ) { |
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case HCBT_MINMAX: |
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if ( ( LOWORD( lParam ) == SW_SHOWMINIMIZED ) |
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|| ( LOWORD( lParam ) == SW_MINIMIZE ) ) { |
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MessageBox( 0, "Minimizing windows is not allowed in this version. Sorry!", "SeamlessRDP", MB_OK ); |
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return 1; |
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} |
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GetWindowText( ( HWND ) wParam, windowTitle, 150 ); |
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WriteToChannel( "SETSTATE1,0x%p,%s,0x%x,0x%x", |
switch (code) |
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( HWND ) wParam, |
{ |
199 |
windowTitle, |
case HCBT_MINMAX: |
200 |
LOWORD( lParam ), |
{ |
201 |
0 ); |
int show, state; |
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break; |
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203 |
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show = LOWORD(lparam); |
204 |
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default: |
if ((show == SW_NORMAL) || (show == SW_SHOWNORMAL) |
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break; |
|| (show == SW_RESTORE)) |
207 |
} |
state = 0; |
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else if ((show == SW_MINIMIZE) || (show == SW_SHOWMINIMIZED)) |
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state = 1; |
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else if ((show == SW_MAXIMIZE) || (show == SW_SHOWMAXIMIZED)) |
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state = 2; |
212 |
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else |
213 |
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{ |
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debug("Unexpected show: %d", show); |
215 |
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break; |
216 |
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} |
217 |
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vchannel_write("STATE,0x%p,0x%x,0x%x", (HWND) wparam, state, 0); |
218 |
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break; |
219 |
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} |
220 |
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default: |
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break; |
223 |
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} |
224 |
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end: |
226 |
return CallNextHookEx( hCbtProc, nCode, wParam, lParam ); |
return CallNextHookEx(g_cbt_hook, code, wparam, lparam); |
227 |
} |
} |
228 |
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229 |
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DLL_EXPORT void |
230 |
LRESULT CALLBACK ShellProc( int nCode, WPARAM wParam, LPARAM lParam ) |
SetHooks(void) |
231 |
{ |
{ |
232 |
char windowTitle[ 150 ] = { "" |
if (!g_cbt_hook) |
233 |
}; |
g_cbt_hook = SetWindowsHookEx(WH_CBT, cbt_hook_proc, g_instance, 0); |
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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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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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if ( nCode < 0 ) { |
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return CallNextHookEx( hShellProc, nCode, wParam, lParam ); |
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} |
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switch ( nCode ) { |
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case HSHELL_WINDOWCREATED: |
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//get window id |
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windowHandle = ( HWND ) wParam; |
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itoa( ( int ) windowHandle, strWindowId, 10 ); |
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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, 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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//get name |
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GetWindowText( windowHandle, windowTitle, 150 ); |
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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=" ); |
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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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WriteToChannel( result ); |
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break; |
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case HSHELL_WINDOWDESTROYED: |
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//get window id |
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windowHandle = ( HWND ) wParam; |
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itoa( ( int ) windowHandle, strWindowId, 10 ); |
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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, 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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//get name |
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GetWindowText( windowHandle, windowTitle, 150 ); |
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////setup return string |
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strcat( result, "MSG=HSHELL_WINDOWDESTROYED;OP=1;" ); |
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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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WriteToChannel( result ); |
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break; |
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default: |
|
|
break; |
|
|
} |
|
|
|
|
234 |
|
|
235 |
return CallNextHookEx( hShellProc, nCode, wParam, lParam ); |
if (!g_wndproc_hook) |
236 |
|
g_wndproc_hook = SetWindowsHookEx(WH_CALLWNDPROC, wndproc_hook_proc, g_instance, 0); |
237 |
} |
} |
238 |
|
|
239 |
DLL_EXPORT void SetHooks( void ) |
DLL_EXPORT void |
240 |
|
RemoveHooks(void) |
241 |
{ |
{ |
242 |
if ( !hCbtProc ) { |
if (g_cbt_hook) |
243 |
hCbtProc = SetWindowsHookEx( WH_CBT, ( HOOKPROC ) CbtProc, hInst, ( DWORD ) NULL ); |
UnhookWindowsHookEx(g_cbt_hook); |
|
} |
|
|
|
|
|
#if 0 |
|
|
if ( !hShellProc ) { |
|
|
hShellProc = SetWindowsHookEx( WH_SHELL, ( HOOKPROC ) ShellProc, hInst, ( DWORD ) NULL ); |
|
|
} |
|
|
#endif |
|
|
|
|
|
if ( !hWndProc ) { |
|
|
hWndProc = SetWindowsHookEx( WH_CALLWNDPROC, ( HOOKPROC ) CallWndProc, hInst, ( DWORD ) NULL ); |
|
|
} |
|
|
} |
|
244 |
|
|
245 |
DLL_EXPORT void RemoveHooks( void ) |
if (g_wndproc_hook) |
246 |
{ |
UnhookWindowsHookEx(g_wndproc_hook); |
|
if ( hCbtProc ) { |
|
|
UnhookWindowsHookEx( hCbtProc ); |
|
|
} |
|
|
|
|
|
if ( hShellProc ) { |
|
|
UnhookWindowsHookEx( hShellProc ); |
|
|
} |
|
|
|
|
|
if ( hWndProc ) { |
|
|
UnhookWindowsHookEx( hWndProc ); |
|
|
} |
|
247 |
} |
} |
248 |
|
|
249 |
DLL_EXPORT int GetInstanceCount() |
DLL_EXPORT int |
250 |
|
GetInstanceCount() |
251 |
{ |
{ |
252 |
return iInstanceCount; |
return g_instance_count; |
253 |
} |
} |
254 |
|
|
255 |
int OpenVirtualChannel() |
BOOL APIENTRY |
256 |
|
DllMain(HINSTANCE hinstDLL, DWORD ul_reason_for_call, LPVOID lpReserved) |
257 |
{ |
{ |
258 |
m_vcHandle = WTSVirtualChannelOpen( WTS_CURRENT_SERVER_HANDLE, WTS_CURRENT_SESSION, CHANNELNAME ); |
switch (ul_reason_for_call) |
259 |
|
{ |
260 |
|
case DLL_PROCESS_ATTACH: |
261 |
|
// remember our instance handle |
262 |
|
g_instance = hinstDLL; |
263 |
|
|
264 |
if ( m_vcHandle == NULL ) { |
g_mutex = CreateMutex(NULL, FALSE, "Local\\SeamlessDLL"); |
265 |
return 0; |
if (!g_mutex) |
266 |
} else { |
return FALSE; |
|
return 1; |
|
|
} |
|
|
} |
|
267 |
|
|
268 |
int CloseVirtualChannel() |
WaitForSingleObject(g_mutex, INFINITE); |
269 |
{ |
++g_instance_count; |
270 |
BOOL result = WTSVirtualChannelClose( m_vcHandle ); |
ReleaseMutex(g_mutex); |
271 |
|
|
272 |
m_vcHandle = NULL; |
vchannel_open(); |
273 |
|
|
274 |
if ( result ) { |
break; |
|
return 1; |
|
|
} else { |
|
|
return 0; |
|
|
} |
|
|
} |
|
275 |
|
|
276 |
int ChannelIsOpen() |
case DLL_THREAD_ATTACH: |
277 |
{ |
break; |
|
if ( m_vcHandle == NULL ) { |
|
|
return 0; |
|
|
} else { |
|
|
return 1; |
|
|
} |
|
|
} |
|
278 |
|
|
279 |
int WriteToChannel( char *format, ... ) |
case DLL_THREAD_DETACH: |
280 |
{ |
break; |
281 |
BOOL result; |
|
282 |
va_list argp; |
case DLL_PROCESS_DETACH: |
283 |
char buf [ 1024 ]; |
WaitForSingleObject(g_mutex, INFINITE); |
284 |
int size; |
--g_instance_count; |
285 |
PULONG bytesRead = 0; |
ReleaseMutex(g_mutex); |
286 |
PULONG pBytesWritten = 0; |
|
287 |
|
vchannel_close(); |
288 |
if ( !ChannelIsOpen() ) |
|
289 |
return 1; |
CloseHandle(g_mutex); |
290 |
|
|
291 |
va_start( argp, format ); |
break; |
292 |
size = _vsnprintf( buf, sizeof( buf ), format, argp ); |
} |
293 |
va_end( argp ); |
|
294 |
|
return TRUE; |
|
if ( size >= sizeof( buf ) ) |
|
|
return 0; |
|
|
|
|
|
WaitForSingleObject( hMutex, INFINITE ); |
|
|
result = WTSVirtualChannelWrite( m_vcHandle, buf, ( ULONG ) strlen( buf ), pBytesWritten ); |
|
|
result = WTSVirtualChannelWrite( m_vcHandle, "\n", ( ULONG ) 1, pBytesWritten ); |
|
|
ReleaseMutex( hMutex ); |
|
|
|
|
|
if ( result ) { |
|
|
return 1; |
|
|
} else { |
|
|
return 0; |
|
|
} |
|
295 |
} |
} |