| 1 |
// |
| 2 |
// Copyright (C) 2004-2005 Martin Wickett |
| 3 |
// |
| 4 |
|
| 5 |
#include "hookdll.h" |
| 6 |
#include <windows.h> |
| 7 |
#include <winuser.h> |
| 8 |
#include <stdio.h> |
| 9 |
#include <stdarg.h> |
| 10 |
|
| 11 |
#include "wtsapi32.h" |
| 12 |
#include "Cchannel.h" |
| 13 |
|
| 14 |
#define DLL_EXPORT extern "C" __declspec(dllexport) |
| 15 |
|
| 16 |
// Shared DATA |
| 17 |
#pragma data_seg ( "SHAREDDATA" ) |
| 18 |
|
| 19 |
// this is the total number of processes this dll is currently attached to |
| 20 |
int iInstanceCount = 0; |
| 21 |
HWND hWnd = 0; |
| 22 |
|
| 23 |
#pragma data_seg () |
| 24 |
|
| 25 |
#pragma comment(linker, "/section:SHAREDDATA,rws") |
| 26 |
|
| 27 |
#define snprintf _snprintf |
| 28 |
|
| 29 |
bool bHooked = false; |
| 30 |
bool bHooked2 = false; |
| 31 |
bool bHooked3 = false; |
| 32 |
HHOOK hhook = 0; //cbt |
| 33 |
HHOOK hhook2 = 0; //shell |
| 34 |
HHOOK hhook3 = 0; //wnd proc |
| 35 |
HINSTANCE hInst = 0; |
| 36 |
HANDLE m_vcHandle = 0; |
| 37 |
|
| 38 |
|
| 39 |
void SendDebug( char *format, ... ) |
| 40 |
{ |
| 41 |
va_list argp; |
| 42 |
char buf [ 256 ]; |
| 43 |
|
| 44 |
va_start( argp, format ); |
| 45 |
vsprintf( buf, format, argp ); |
| 46 |
va_end( argp ); |
| 47 |
|
| 48 |
if ( ChannelIsOpen() ) { |
| 49 |
WriteToChannel( "DEBUG1," ); |
| 50 |
WriteToChannel( buf ); |
| 51 |
WriteToChannel( "\n" ); |
| 52 |
} |
| 53 |
} |
| 54 |
|
| 55 |
|
| 56 |
|
| 57 |
BOOL APIENTRY DllMain( HINSTANCE hinstDLL, DWORD ul_reason_for_call, LPVOID lpReserved ) |
| 58 |
{ |
| 59 |
switch ( ul_reason_for_call ) { |
| 60 |
case DLL_PROCESS_ATTACH: { |
| 61 |
// remember our instance handle |
| 62 |
hInst = hinstDLL; |
| 63 |
++iInstanceCount; |
| 64 |
OpenVirtualChannel(); |
| 65 |
break; |
| 66 |
} |
| 67 |
|
| 68 |
case DLL_THREAD_ATTACH: |
| 69 |
break; |
| 70 |
case DLL_THREAD_DETACH: |
| 71 |
break; |
| 72 |
case DLL_PROCESS_DETACH: { |
| 73 |
--iInstanceCount; |
| 74 |
CloseVirtualChannel(); |
| 75 |
} |
| 76 |
break; |
| 77 |
} |
| 78 |
|
| 79 |
return TRUE; |
| 80 |
} |
| 81 |
|
| 82 |
LRESULT CALLBACK CallWndProc( int nCode, WPARAM wParam, LPARAM lParam ) |
| 83 |
{ |
| 84 |
if ( nCode < 0 ) { |
| 85 |
return CallNextHookEx( hhook3, nCode, wParam, lParam ); |
| 86 |
} |
| 87 |
|
| 88 |
char windowTitle[ 150 ] = { "" |
| 89 |
}; |
| 90 |
HWND windowHandle = NULL; |
| 91 |
HWND windowHandle2 = NULL; |
| 92 |
char result[ 255 ] = { "" |
| 93 |
}; |
| 94 |
CWPSTRUCT *details = ( CWPSTRUCT * ) lParam; |
| 95 |
CREATESTRUCT *cs = ( CREATESTRUCT * ) details->lParam; |
| 96 |
LONG dwStyle = GetWindowLong( details->hwnd, GWL_STYLE ); |
| 97 |
WINDOWPOS *wp = ( WINDOWPOS * ) details->lParam; |
| 98 |
RECT *rect = ( RECT * ) details->lParam; |
| 99 |
|
| 100 |
switch ( details->message ) { |
| 101 |
|
| 102 |
case WM_SIZING: |
| 103 |
case WM_MOVING: |
| 104 |
if ( !( dwStyle & WS_VISIBLE ) ) |
| 105 |
break; |
| 106 |
|
| 107 |
if ( !( dwStyle & WS_DLGFRAME ) ) |
| 108 |
break; |
| 109 |
|
| 110 |
snprintf( result, sizeof( result ), |
| 111 |
"POSITION1,0x%p,%d,%d,%d,%d,0x%x", |
| 112 |
details->hwnd, |
| 113 |
rect->left, rect->top, |
| 114 |
rect->right - rect->left, |
| 115 |
rect->bottom - rect->top, |
| 116 |
0 ); |
| 117 |
result[ sizeof( result ) - 1 ] = '\0'; |
| 118 |
break; |
| 119 |
|
| 120 |
|
| 121 |
/* Note: WM_WINDOWPOSCHANGING/WM_WINDOWPOSCHANGED are |
| 122 |
strange. Sometimes, for example when bringing up the |
| 123 |
Notepad About dialog, only an WM_WINDOWPOSCHANGING is |
| 124 |
sent. In some other cases, for exmaple when opening |
| 125 |
Format->Text in Notepad, both events are sent. Also, for |
| 126 |
some reason, when closing the Notepad About dialog, an |
| 127 |
WM_WINDOWPOSCHANGING event is sent which looks just like |
| 128 |
the event that was sent when the About dialog was opened... */ |
| 129 |
case WM_WINDOWPOSCHANGING: |
| 130 |
|
| 131 |
if ( !( dwStyle & WS_VISIBLE ) ) |
| 132 |
break; |
| 133 |
|
| 134 |
if ( !( dwStyle & WS_DLGFRAME ) ) |
| 135 |
break; |
| 136 |
|
| 137 |
if ( !( wp->flags & SWP_NOZORDER ) ) { |
| 138 |
snprintf( result, sizeof( result ), |
| 139 |
"ZCHANGE1,0x%p,0x%p,0x%x\n", |
| 140 |
details->hwnd, |
| 141 |
wp->flags & SWP_NOACTIVATE ? wp->hwndInsertAfter : 0, |
| 142 |
0 ); |
| 143 |
result[ sizeof( result ) - 1 ] = '\0'; |
| 144 |
} |
| 145 |
break; |
| 146 |
|
| 147 |
|
| 148 |
case WM_CREATE: |
| 149 |
if ( cs->style & WS_DLGFRAME ) { |
| 150 |
snprintf( result, sizeof( result ), |
| 151 |
"CREATE1,0x%p,0x%x\n", |
| 152 |
details->hwnd, 0 ); |
| 153 |
} |
| 154 |
break; |
| 155 |
|
| 156 |
|
| 157 |
case WM_DESTROY: |
| 158 |
if ( dwStyle & WS_DLGFRAME ) { |
| 159 |
snprintf( result, sizeof( result ), |
| 160 |
"DESTROY1,0x%p,0x%x\n", |
| 161 |
details->hwnd, 0 ); |
| 162 |
} |
| 163 |
|
| 164 |
break; |
| 165 |
|
| 166 |
|
| 167 |
default: |
| 168 |
break; |
| 169 |
} |
| 170 |
|
| 171 |
if ( ChannelIsOpen() ) { |
| 172 |
if ( result[ 0 ] != '\0' ) { |
| 173 |
WriteToChannel( result ); |
| 174 |
} |
| 175 |
} |
| 176 |
|
| 177 |
return CallNextHookEx( hhook3, nCode, wParam, lParam ); |
| 178 |
} |
| 179 |
|
| 180 |
LRESULT CALLBACK CbtProc( int nCode, WPARAM wParam, LPARAM lParam ) |
| 181 |
{ |
| 182 |
if ( nCode < 0 ) { |
| 183 |
return CallNextHookEx( hhook, nCode, wParam, lParam ); |
| 184 |
} |
| 185 |
|
| 186 |
char windowTitle[ 150 ] = { "" |
| 187 |
}; |
| 188 |
HWND windowHandle = NULL; |
| 189 |
char result[ 255 ] = { "" |
| 190 |
}; |
| 191 |
switch ( nCode ) { |
| 192 |
case HCBT_MINMAX: |
| 193 |
|
| 194 |
if ( ( LOWORD( lParam ) == SW_SHOWMINIMIZED ) |
| 195 |
|| ( LOWORD( lParam ) == SW_MINIMIZE ) ) { |
| 196 |
MessageBox( 0, "Minimizing windows is not allowed in this version. Sorry!", "SeamlessRDP", MB_OK ); |
| 197 |
return 1; |
| 198 |
} |
| 199 |
|
| 200 |
GetWindowText( ( HWND ) wParam, windowTitle, 150 ); |
| 201 |
|
| 202 |
snprintf( result, sizeof( result ), |
| 203 |
"SETSTATE1,0x%p,%s,0x%x,0x%x\n", |
| 204 |
( HWND ) wParam, |
| 205 |
windowTitle, |
| 206 |
LOWORD( lParam ), |
| 207 |
0 ); |
| 208 |
break; |
| 209 |
|
| 210 |
|
| 211 |
default: |
| 212 |
break; |
| 213 |
} |
| 214 |
|
| 215 |
if ( ChannelIsOpen() ) { |
| 216 |
if ( result[ 0 ] != '\0' ) { |
| 217 |
WriteToChannel( result ); |
| 218 |
} |
| 219 |
} |
| 220 |
|
| 221 |
return CallNextHookEx( hhook, nCode, wParam, lParam ); |
| 222 |
} |
| 223 |
|
| 224 |
|
| 225 |
LRESULT CALLBACK ShellProc( int nCode, WPARAM wParam, LPARAM lParam ) |
| 226 |
{ |
| 227 |
if ( nCode < 0 ) { |
| 228 |
return CallNextHookEx( hhook, nCode, wParam, lParam ); |
| 229 |
} |
| 230 |
|
| 231 |
if ( ChannelIsOpen() ) { |
| 232 |
char windowTitle[ 150 ] = { "" |
| 233 |
}; |
| 234 |
HWND windowHandle = NULL; |
| 235 |
char result[ 255 ] = { "" |
| 236 |
}; |
| 237 |
char strWindowId[ 25 ]; |
| 238 |
LONG b, t, l, r; |
| 239 |
char strW[ 5 ]; |
| 240 |
char strY[ 5 ]; |
| 241 |
char strX[ 5 ]; |
| 242 |
char strH[ 5 ]; |
| 243 |
RECT rect; |
| 244 |
|
| 245 |
switch ( nCode ) { |
| 246 |
case HSHELL_WINDOWCREATED: |
| 247 |
|
| 248 |
//get window id |
| 249 |
windowHandle = ( HWND ) wParam; |
| 250 |
itoa( ( int ) windowHandle, strWindowId, 10 ); |
| 251 |
|
| 252 |
//get coords |
| 253 |
GetWindowRect( windowHandle, &rect ); |
| 254 |
b = rect.bottom; |
| 255 |
t = rect.top; |
| 256 |
l = rect.left; |
| 257 |
r = rect.right; |
| 258 |
ltoa( b - t, strH, 10 ); |
| 259 |
ltoa( t, strY, 10 ); |
| 260 |
ltoa( r - l, strW, 10 ); |
| 261 |
ltoa( l, strX, 10 ); |
| 262 |
|
| 263 |
//get name |
| 264 |
GetWindowText( windowHandle, windowTitle, 150 ); |
| 265 |
|
| 266 |
////setup return string |
| 267 |
strcat( result, "MSG=HSHELL_WINDOWCREATED;OP=0;" ); |
| 268 |
strcat( result, "ID=" ); |
| 269 |
strcat( result, strWindowId ); |
| 270 |
strcat( result, ";" ); |
| 271 |
strcat( result, "TITLE=" ); |
| 272 |
strcat( result, windowTitle ); |
| 273 |
strcat( result, ";" ); |
| 274 |
strcat( result, "X=" ); |
| 275 |
strcat( result, strX ); |
| 276 |
strcat( result, ";" ); |
| 277 |
strcat( result, "Y=" ); |
| 278 |
strcat( result, strY ); |
| 279 |
strcat( result, ";" ); |
| 280 |
strcat( result, "H=" ); |
| 281 |
strcat( result, strH ); |
| 282 |
strcat( result, ";" ); |
| 283 |
strcat( result, "W=" ); |
| 284 |
strcat( result, strW ); |
| 285 |
strcat( result, "." ); |
| 286 |
|
| 287 |
break; |
| 288 |
|
| 289 |
case HSHELL_WINDOWDESTROYED: |
| 290 |
|
| 291 |
//get window id |
| 292 |
windowHandle = ( HWND ) wParam; |
| 293 |
itoa( ( int ) windowHandle, strWindowId, 10 ); |
| 294 |
|
| 295 |
//get coords |
| 296 |
GetWindowRect( windowHandle, &rect ); |
| 297 |
b = rect.bottom; |
| 298 |
t = rect.top; |
| 299 |
l = rect.left; |
| 300 |
r = rect.right; |
| 301 |
ltoa( b - t, strH, 10 ); |
| 302 |
ltoa( t, strY, 10 ); |
| 303 |
ltoa( r - l, strW, 10 ); |
| 304 |
ltoa( l, strX, 10 ); |
| 305 |
|
| 306 |
//get name |
| 307 |
GetWindowText( windowHandle, windowTitle, 150 ); |
| 308 |
|
| 309 |
////setup return string |
| 310 |
strcat( result, "MSG=HSHELL_WINDOWDESTROYED;OP=1;" ); |
| 311 |
strcat( result, "ID=" ); |
| 312 |
strcat( result, strWindowId ); |
| 313 |
strcat( result, ";" ); |
| 314 |
strcat( result, "TITLE=" ); |
| 315 |
strcat( result, windowTitle ); |
| 316 |
strcat( result, ";" ); |
| 317 |
strcat( result, "X=" ); |
| 318 |
strcat( result, strX ); |
| 319 |
strcat( result, ";" ); |
| 320 |
strcat( result, "Y=" ); |
| 321 |
strcat( result, strY ); |
| 322 |
strcat( result, ";" ); |
| 323 |
strcat( result, "H=" ); |
| 324 |
strcat( result, strH ); |
| 325 |
strcat( result, ";" ); |
| 326 |
strcat( result, "W=" ); |
| 327 |
strcat( result, strW ); |
| 328 |
strcat( result, "." ); |
| 329 |
|
| 330 |
break; |
| 331 |
default: |
| 332 |
break; |
| 333 |
} |
| 334 |
|
| 335 |
if ( result[ 0 ] != '\0' ) { |
| 336 |
WriteToChannel( result ); |
| 337 |
} |
| 338 |
} |
| 339 |
|
| 340 |
return CallNextHookEx( hhook, nCode, wParam, lParam ); |
| 341 |
} |
| 342 |
|
| 343 |
DLL_EXPORT void SetCbtHook( void ) |
| 344 |
{ |
| 345 |
if ( !bHooked ) { |
| 346 |
hhook = SetWindowsHookEx( WH_CBT, ( HOOKPROC ) CbtProc, hInst, ( DWORD ) NULL ); |
| 347 |
bHooked = true; |
| 348 |
} |
| 349 |
|
| 350 |
if ( !bHooked2 ) { |
| 351 |
hhook2 = SetWindowsHookEx( WH_SHELL, ( HOOKPROC ) ShellProc, hInst, ( DWORD ) NULL ); |
| 352 |
bHooked2 = true; |
| 353 |
} |
| 354 |
|
| 355 |
if ( !bHooked3 ) { |
| 356 |
hhook3 = SetWindowsHookEx( WH_CALLWNDPROC, ( HOOKPROC ) CallWndProc, hInst, ( DWORD ) NULL ); |
| 357 |
bHooked3 = true; |
| 358 |
} |
| 359 |
} |
| 360 |
|
| 361 |
DLL_EXPORT void RemoveCbtHook( void ) |
| 362 |
{ |
| 363 |
if ( bHooked ) { |
| 364 |
UnhookWindowsHookEx( hhook ); |
| 365 |
bHooked = false; |
| 366 |
} |
| 367 |
|
| 368 |
if ( bHooked2 ) { |
| 369 |
UnhookWindowsHookEx( hhook2 ); |
| 370 |
bHooked2 = false; |
| 371 |
} |
| 372 |
|
| 373 |
if ( bHooked3 ) { |
| 374 |
UnhookWindowsHookEx( hhook3 ); |
| 375 |
bHooked3 = false; |
| 376 |
} |
| 377 |
} |
| 378 |
|
| 379 |
DLL_EXPORT int GetInstanceCount() |
| 380 |
{ |
| 381 |
return iInstanceCount; |
| 382 |
} |
| 383 |
|
| 384 |
int OpenVirtualChannel() |
| 385 |
{ |
| 386 |
m_vcHandle = WTSVirtualChannelOpen( WTS_CURRENT_SERVER_HANDLE, WTS_CURRENT_SESSION, CHANNELNAME ); |
| 387 |
|
| 388 |
if ( m_vcHandle == NULL ) { |
| 389 |
return 0; |
| 390 |
} else { |
| 391 |
return 1; |
| 392 |
} |
| 393 |
} |
| 394 |
|
| 395 |
int CloseVirtualChannel() |
| 396 |
{ |
| 397 |
BOOL result = WTSVirtualChannelClose( m_vcHandle ); |
| 398 |
|
| 399 |
m_vcHandle = NULL; |
| 400 |
|
| 401 |
if ( result ) { |
| 402 |
return 1; |
| 403 |
} else { |
| 404 |
return 0; |
| 405 |
} |
| 406 |
} |
| 407 |
|
| 408 |
int ChannelIsOpen() |
| 409 |
{ |
| 410 |
if ( m_vcHandle == NULL ) { |
| 411 |
return 0; |
| 412 |
} else { |
| 413 |
return 1; |
| 414 |
} |
| 415 |
} |
| 416 |
|
| 417 |
int WriteToChannel( PCHAR buffer ) |
| 418 |
{ |
| 419 |
PULONG bytesRead = 0; |
| 420 |
PULONG pBytesWritten = 0; |
| 421 |
|
| 422 |
BOOL result = WTSVirtualChannelWrite( m_vcHandle, buffer, ( ULONG ) strlen( buffer ), pBytesWritten ); |
| 423 |
|
| 424 |
if ( result ) { |
| 425 |
return 1; |
| 426 |
} else { |
| 427 |
return 0; |
| 428 |
} |
| 429 |
} |
Parent Directory
| 
Revision Log