1 /*
2 * Copyright (C) 2006 Alexandre Julliard
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
17 */
18
19 #include <stdarg.h>
20 #include <stdlib.h>
21
22 #include "windef.h"
23 #include "winbase.h"
24 #include "winuser.h"
25 #include "tlhelp32.h"
26
27 #include "wine/debug.h"
28
29 #include "resource.h"
30
31 WINE_DEFAULT_DEBUG_CHANNEL(wineboot);
32
33 #define MESSAGE_TIMEOUT 5000
34
35 struct window_info
36 {
37 HWND hwnd;
38 DWORD pid;
39 DWORD tid;
40 };
41
42 static UINT win_count;
43 static UINT win_max;
44 static struct window_info *windows;
45 static DWORD desktop_pid;
46
47 /* store a new window; callback for EnumWindows */
48 static BOOL CALLBACK enum_proc( HWND hwnd, LPARAM lp )
49 {
50 if (win_count >= win_max)
51 {
52 UINT new_count = win_max * 2;
53 struct window_info *new_win = HeapReAlloc( GetProcessHeap(), 0, windows,
54 new_count * sizeof(windows[0]) );
55 if (!new_win) return FALSE;
56 windows = new_win;
57 win_max = new_count;
58 }
59 windows[win_count].hwnd = hwnd;
60 windows[win_count].tid = GetWindowThreadProcessId( hwnd, &windows[win_count].pid );
61 win_count++;
62 return TRUE;
63 }
64
65 /* compare two window info structures; callback for qsort */
66 static int cmp_window( const void *ptr1, const void *ptr2 )
67 {
68 const struct window_info *info1 = ptr1;
69 const struct window_info *info2 = ptr2;
70 int ret = info1->pid - info2->pid;
71 if (!ret) ret = info1->tid - info2->tid;
72 return ret;
73 }
74
75 /* build the list of all windows (FIXME: handle multiple desktops) */
76 static BOOL get_all_windows(void)
77 {
78 win_count = 0;
79 win_max = 16;
80 windows = HeapAlloc( GetProcessHeap(), 0, win_max * sizeof(windows[0]) );
81 if (!windows) return FALSE;
82 if (!EnumWindows( enum_proc, 0 )) return FALSE;
83 /* sort windows by processes */
84 qsort( windows, win_count, sizeof(windows[0]), cmp_window );
85 return TRUE;
86 }
87
88 struct callback_data
89 {
90 UINT window_count;
91 BOOL timed_out;
92 LRESULT result;
93 };
94
95 static void CALLBACK end_session_message_callback( HWND hwnd, UINT msg, ULONG_PTR data, LRESULT lresult )
96 {
97 struct callback_data *cb_data = (struct callback_data *)data;
98
99 WINE_TRACE( "received response %s hwnd %p lresult %ld\n",
100 msg == WM_QUERYENDSESSION ? "WM_QUERYENDSESSION" : (msg == WM_ENDSESSION ? "WM_ENDSESSION" : "Unknown"),
101 hwnd, lresult );
102
103 /* we only care if a WM_QUERYENDSESSION response is FALSE */
104 cb_data->result = cb_data->result && lresult;
105
106 /* cheap way of ref-counting callback_data whilst freeing memory at correct
107 * time */
108 if (!(cb_data->window_count--) && cb_data->timed_out)
109 HeapFree( GetProcessHeap(), 0, cb_data );
110 }
111
112 struct endtask_dlg_data
113 {
114 struct window_info *win;
115 BOOL cancelled;
116 BOOL terminated;
117 };
118
119 static INT_PTR CALLBACK endtask_dlg_proc( HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam )
120 {
121 struct endtask_dlg_data *data;
122 HANDLE handle;
123
124 switch (msg)
125 {
126 case WM_INITDIALOG:
127 SetWindowLongPtrW( hwnd, DWLP_USER, lparam );
128 data = (struct endtask_dlg_data *)lparam;
129 ShowWindow( hwnd, SW_SHOWNORMAL );
130 return TRUE;
131 case WM_COMMAND:
132 data = (struct endtask_dlg_data *)GetWindowLongPtrW( hwnd, DWLP_USER );
133 switch (wparam)
134 {
135 case MAKEWPARAM(IDOK, BN_CLICKED):
136 handle = OpenProcess( PROCESS_TERMINATE, FALSE, data->win[0].pid );
137 if (handle)
138 {
139 WINE_TRACE( "terminating process %04x\n", data->win[0].pid );
140 TerminateProcess( handle, 0 );
141 CloseHandle( handle );
142 data->terminated = TRUE;
143 }
144 return TRUE;
145 case MAKEWPARAM(IDCANCEL, BN_CLICKED):
146 data->cancelled = TRUE;
147 return TRUE;
148 }
149 break;
150 }
151 return FALSE;
152 }
153
154 /* Sends a message to a set of windows, displaying a dialog if the window
155 * doesn't respond to the message within a set amount of time.
156 * If the process has already been terminated, the function returns -1.
157 * If the user or application cancels the process, the function returns 0.
158 * Otherwise the function returns 0. */
159 static LRESULT send_messages_with_timeout_dialog(
160 struct window_info *win, UINT count, HANDLE process_handle,
161 UINT msg, WPARAM wparam, LPARAM lparam )
162 {
163 unsigned int i;
164 DWORD ret;
165 DWORD start_time;
166 struct callback_data *cb_data;
167 HWND hwnd_endtask = NULL;
168 struct endtask_dlg_data dlg_data;
169 LRESULT result;
170
171 cb_data = HeapAlloc( GetProcessHeap(), 0, sizeof(*cb_data) );
172 if (!cb_data)
173 return 1;
174
175 cb_data->result = TRUE; /* we only care if a WM_QUERYENDSESSION response is FALSE */
176 cb_data->timed_out = FALSE;
177 cb_data->window_count = count;
178
179 dlg_data.win = win;
180 dlg_data.terminated = FALSE;
181 dlg_data.cancelled = FALSE;
182
183 for (i = 0; i < count; i++)
184 {
185 if (!SendMessageCallbackW( win[i].hwnd, msg, wparam, lparam,
186 end_session_message_callback, (ULONG_PTR)cb_data ))
187 cb_data->window_count --;
188 }
189
190 start_time = GetTickCount();
191 while (TRUE)
192 {
193 DWORD current_time = GetTickCount();
194
195 ret = MsgWaitForMultipleObjects( 1, &process_handle, FALSE,
196 MESSAGE_TIMEOUT - (current_time - start_time),
197 QS_ALLINPUT );
198 if (ret == WAIT_OBJECT_0) /* process exited */
199 {
200 HeapFree( GetProcessHeap(), 0, cb_data );
201 result = 1;
202 goto cleanup;
203 }
204 else if (ret == WAIT_OBJECT_0 + 1) /* window message */
205 {
206 MSG msg;
207 while(PeekMessageW( &msg, NULL, 0, 0, PM_REMOVE ))
208 {
209 if (!hwnd_endtask || !IsDialogMessageW( hwnd_endtask, &msg ))
210 {
211 TranslateMessage( &msg );
212 DispatchMessageW( &msg );
213 }
214 }
215 if (!cb_data->window_count)
216 {
217 result = dlg_data.terminated || cb_data->result;
218 HeapFree( GetProcessHeap(), 0, cb_data );
219 if (!result)
220 goto cleanup;
221 break;
222 }
223 if (dlg_data.cancelled)
224 {
225 cb_data->timed_out = TRUE;
226 result = 0;
227 goto cleanup;
228 }
229 }
230 else if ((ret == WAIT_TIMEOUT) && !hwnd_endtask)
231 {
232 hwnd_endtask = CreateDialogParamW( GetModuleHandleW(NULL),
233 MAKEINTRESOURCEW(IDD_ENDTASK),
234 NULL, endtask_dlg_proc,
235 (LPARAM)&dlg_data );
236 }
237 else break;
238 }
239
240 result = 1;
241
242 cleanup:
243 if (hwnd_endtask) DestroyWindow( hwnd_endtask );
244 return result;
245 }
246
247 /* send WM_QUERYENDSESSION and WM_ENDSESSION to all windows of a given process */
248 static DWORD_PTR send_end_session_messages( struct window_info *win, UINT count, UINT flags )
249 {
250 LRESULT result, end_session;
251 HANDLE process_handle;
252 DWORD ret;
253
254 /* FIXME: Use flags to implement EWX_FORCEIFHUNG! */
255 /* don't kill the desktop process */
256 if (win[0].pid == desktop_pid) return 1;
257
258 process_handle = OpenProcess( SYNCHRONIZE, FALSE, win[0].pid );
259 if (!process_handle)
260 return 1;
261
262 end_session = send_messages_with_timeout_dialog( win, count, process_handle,
263 WM_QUERYENDSESSION, 0, 0 );
264 if (end_session == -1)
265 {
266 CloseHandle( process_handle );
267 return 1;
268 }
269
270 result = send_messages_with_timeout_dialog( win, count, process_handle,
271 WM_ENDSESSION, end_session, 0 );
272 if (end_session == 0)
273 {
274 CloseHandle( process_handle );
275 return 0;
276 }
277 if (result == -1)
278 {
279 CloseHandle( process_handle );
280 return 1;
281 }
282
283 /* Check whether the app quit on its own */
284 ret = WaitForSingleObject( process_handle, 0 );
285 CloseHandle( process_handle );
286 if (ret == WAIT_TIMEOUT)
287 {
288 /* If not, it returned from all WM_ENDSESSION and is finished cleaning
289 * up, so we can safely kill the process. */
290 HANDLE handle = OpenProcess( PROCESS_TERMINATE, FALSE, win[0].pid );
291 if (handle)
292 {
293 WINE_TRACE( "terminating process %04x\n", win[0].pid );
294 TerminateProcess( handle, 0 );
295 CloseHandle( handle );
296 }
297 }
298 return 1;
299 }
300
301 /* close all top-level windows and terminate processes cleanly */
302 BOOL shutdown_close_windows( BOOL force )
303 {
304 UINT send_flags = force ? SMTO_ABORTIFHUNG : SMTO_NORMAL;
305 DWORD_PTR result = 1;
306 UINT i, n;
307
308 if (!get_all_windows()) return FALSE;
309
310 GetWindowThreadProcessId( GetDesktopWindow(), &desktop_pid );
311
312 for (i = n = 0; result && i < win_count; i++, n++)
313 {
314 if (n && windows[i-1].pid != windows[i].pid)
315 {
316 result = send_end_session_messages( windows + i - n, n, send_flags );
317 n = 0;
318 }
319 }
320 if (n && result)
321 result = send_end_session_messages( windows + win_count - n, n, send_flags );
322
323 HeapFree( GetProcessHeap(), 0, windows );
324
325 return (result != 0);
326 }
327
328 static BOOL CALLBACK shutdown_one_desktop( LPWSTR name, LPARAM force )
329 {
330 HDESK hdesk;
331
332 WINE_TRACE("Shutting down desktop %s\n", wine_dbgstr_w(name));
333
334 hdesk = OpenDesktopW( name, 0, FALSE, GENERIC_ALL );
335 if (hdesk == NULL)
336 {
337 WINE_ERR("Cannot open desktop %s, err=%i\n", wine_dbgstr_w(name), GetLastError());
338 return 0;
339 }
340
341 if (!SetThreadDesktop( hdesk ))
342 {
343 CloseDesktop( hdesk );
344 WINE_ERR("Cannot set thread desktop %s, err=%i\n", wine_dbgstr_w(name), GetLastError());
345 return 0;
346 }
347
348 CloseDesktop( hdesk );
349
350 return shutdown_close_windows( force );
351 }
352
353 BOOL shutdown_all_desktops( BOOL force )
354 {
355 BOOL ret;
356 HDESK prev_desktop;
357
358 prev_desktop = GetThreadDesktop(GetCurrentThreadId());
359
360 ret = EnumDesktopsW( NULL, shutdown_one_desktop, (LPARAM)force );
361
362 SetThreadDesktop(prev_desktop);
363
364 return ret;
365 }
366
367 /* forcibly kill all processes without any cleanup */
368 void kill_processes( BOOL kill_desktop )
369 {
370 BOOL res;
371 UINT killed;
372 HANDLE handle, snapshot;
373 PROCESSENTRY32W process;
374
375 GetWindowThreadProcessId( GetDesktopWindow(), &desktop_pid );
376
377 do
378 {
379 if (!(snapshot = CreateToolhelp32Snapshot( TH32CS_SNAPPROCESS, 0 ))) break;
380
381 killed = 0;
382 process.dwSize = sizeof(process);
383 for (res = Process32FirstW( snapshot, &process ); res; res = Process32NextW( snapshot, &process ))
384 {
385 if (process.th32ProcessID == GetCurrentProcessId()) continue;
386 if (process.th32ProcessID == desktop_pid) continue;
387 WINE_TRACE("killing process %04x %s\n",
388 process.th32ProcessID, wine_dbgstr_w(process.szExeFile) );
389 if (!(handle = OpenProcess( PROCESS_TERMINATE, FALSE, process.th32ProcessID )))
390 continue;
391 if (TerminateProcess( handle, 0 )) killed++;
392 CloseHandle( handle );
393 }
394 CloseHandle( snapshot );
395 } while (killed > 0);
396
397 if (desktop_pid && kill_desktop) /* do this last */
398 {
399 if ((handle = OpenProcess( PROCESS_TERMINATE, FALSE, desktop_pid )))
400 {
401 TerminateProcess( handle, 0 );
402 CloseHandle( handle );
403 }
404 }
405 }
406
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