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 #define PROCQUIT_TIMEOUT 20000
35
36 struct window_info
37 {
38 HWND hwnd;
39 DWORD pid;
40 DWORD tid;
41 };
42
43 static UINT win_count;
44 static UINT win_max;
45 static struct window_info *windows;
46 static DWORD desktop_pid;
47
48 /* store a new window; callback for EnumWindows */
49 static BOOL CALLBACK enum_proc( HWND hwnd, LPARAM lp )
50 {
51 if (win_count >= win_max)
52 {
53 UINT new_count = win_max * 2;
54 struct window_info *new_win = HeapReAlloc( GetProcessHeap(), 0, windows,
55 new_count * sizeof(windows[0]) );
56 if (!new_win) return FALSE;
57 windows = new_win;
58 win_max = new_count;
59 }
60 windows[win_count].hwnd = hwnd;
61 windows[win_count].tid = GetWindowThreadProcessId( hwnd, &windows[win_count].pid );
62 win_count++;
63 return TRUE;
64 }
65
66 /* compare two window info structures; callback for qsort */
67 static int cmp_window( const void *ptr1, const void *ptr2 )
68 {
69 const struct window_info *info1 = ptr1;
70 const struct window_info *info2 = ptr2;
71 int ret = info1->pid - info2->pid;
72 if (!ret) ret = info1->tid - info2->tid;
73 return ret;
74 }
75
76 /* build the list of all windows (FIXME: handle multiple desktops) */
77 static BOOL get_all_windows(void)
78 {
79 win_count = 0;
80 win_max = 16;
81 windows = HeapAlloc( GetProcessHeap(), 0, win_max * sizeof(windows[0]) );
82 if (!windows) return FALSE;
83 if (!EnumWindows( enum_proc, 0 )) return FALSE;
84 /* sort windows by processes */
85 qsort( windows, win_count, sizeof(windows[0]), cmp_window );
86 return TRUE;
87 }
88
89 struct callback_data
90 {
91 UINT window_count;
92 BOOL timed_out;
93 LRESULT result;
94 };
95
96 static void CALLBACK end_session_message_callback( HWND hwnd, UINT msg, ULONG_PTR data, LRESULT lresult )
97 {
98 struct callback_data *cb_data = (struct callback_data *)data;
99
100 WINE_TRACE( "received response %s hwnd %p lresult %ld\n",
101 msg == WM_QUERYENDSESSION ? "WM_QUERYENDSESSION" : (msg == WM_ENDSESSION ? "WM_ENDSESSION" : "Unknown"),
102 hwnd, lresult );
103
104 /* we only care if a WM_QUERYENDSESSION response is FALSE */
105 cb_data->result = cb_data->result && lresult;
106
107 /* cheap way of ref-counting callback_data whilst freeing memory at correct
108 * time */
109 if (!(cb_data->window_count--) && cb_data->timed_out)
110 HeapFree( GetProcessHeap(), 0, cb_data );
111 }
112
113 struct endtask_dlg_data
114 {
115 struct window_info *win;
116 BOOL cancelled;
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 }
143 return TRUE;
144 case MAKEWPARAM(IDCANCEL, BN_CLICKED):
145 data->cancelled = TRUE;
146 return TRUE;
147 }
148 break;
149 }
150 return FALSE;
151 }
152
153 /* Sends a message to a set of windows, displaying a dialog if the window
154 * doesn't respond to the message within a set amount of time.
155 * If the process has already been terminated, the function returns -1.
156 * If the user or application cancels the process, the function returns 0.
157 * Otherwise the function returns 0. */
158 static LRESULT send_messages_with_timeout_dialog(
159 struct window_info *win, UINT count, HANDLE process_handle,
160 UINT msg, WPARAM wparam, LPARAM lparam )
161 {
162 unsigned int i;
163 DWORD ret;
164 DWORD start_time;
165 struct callback_data *cb_data;
166 HWND hwnd_endtask = NULL;
167 struct endtask_dlg_data dlg_data;
168 LRESULT result;
169
170 cb_data = HeapAlloc( GetProcessHeap(), 0, sizeof(*cb_data) );
171 if (!cb_data)
172 return 1;
173
174 cb_data->result = TRUE; /* we only care if a WM_QUERYENDSESSION response is FALSE */
175 cb_data->timed_out = FALSE;
176 cb_data->window_count = count;
177
178 dlg_data.win = win;
179 dlg_data.cancelled = FALSE;
180
181 for (i = 0; i < count; i++)
182 {
183 if (!SendMessageCallbackW( win[i].hwnd, msg, wparam, lparam,
184 end_session_message_callback, (ULONG_PTR)cb_data ))
185 cb_data->window_count --;
186 }
187
188 start_time = GetTickCount();
189 while (TRUE)
190 {
191 DWORD current_time = GetTickCount();
192
193 ret = MsgWaitForMultipleObjects( 1, &process_handle, FALSE,
194 MESSAGE_TIMEOUT - (current_time - start_time),
195 QS_ALLINPUT );
196 if (ret == WAIT_OBJECT_0) /* process exited */
197 {
198 HeapFree( GetProcessHeap(), 0, cb_data );
199 result = 1;
200 goto cleanup;
201 }
202 else if (ret == WAIT_OBJECT_0 + 1) /* window message */
203 {
204 MSG msg;
205 while(PeekMessageW( &msg, NULL, 0, 0, PM_REMOVE ))
206 {
207 if (!hwnd_endtask || !IsDialogMessageW( hwnd_endtask, &msg ))
208 {
209 TranslateMessage( &msg );
210 DispatchMessageW( &msg );
211 }
212 }
213 if (!cb_data->window_count)
214 {
215 result = cb_data->result;
216 HeapFree( GetProcessHeap(), 0, cb_data );
217 if (!result)
218 goto cleanup;
219 break;
220 }
221 if (dlg_data.cancelled)
222 {
223 cb_data->timed_out = TRUE;
224 result = 0;
225 goto cleanup;
226 }
227 }
228 else if ((ret == WAIT_TIMEOUT) && !hwnd_endtask)
229 {
230 hwnd_endtask = CreateDialogParamW( GetModuleHandle(NULL),
231 MAKEINTRESOURCEW(IDD_ENDTASK),
232 NULL, endtask_dlg_proc,
233 (LPARAM)&dlg_data );
234 }
235 else break;
236 }
237
238 result = 1;
239
240 cleanup:
241 if (hwnd_endtask) DestroyWindow( hwnd_endtask );
242 return result;
243 }
244
245 /* send WM_QUERYENDSESSION and WM_ENDSESSION to all windows of a given process */
246 static DWORD_PTR send_end_session_messages( struct window_info *win, UINT count, UINT flags )
247 {
248 LRESULT result, end_session;
249 HANDLE process_handle;
250 DWORD ret;
251
252 /* FIXME: Use flags to implement EWX_FORCEIFHUNG! */
253 /* don't kill the desktop process */
254 if (win[0].pid == desktop_pid) return 1;
255
256 process_handle = OpenProcess( SYNCHRONIZE, FALSE, win[0].pid );
257 if (!process_handle)
258 return 1;
259
260 end_session = send_messages_with_timeout_dialog( win, count, process_handle,
261 WM_QUERYENDSESSION, 0, 0 );
262 if (end_session == -1)
263 {
264 CloseHandle( process_handle );
265 return 1;
266 }
267
268 result = send_messages_with_timeout_dialog( win, count, process_handle,
269 WM_ENDSESSION, end_session, 0 );
270 if (end_session == 0)
271 {
272 CloseHandle( process_handle );
273 return 0;
274 }
275 if (result == -1)
276 {
277 CloseHandle( process_handle );
278 return 1;
279 }
280
281 /* wait for app to quit on its own for a while */
282 ret = WaitForSingleObject( process_handle, PROCQUIT_TIMEOUT );
283 CloseHandle( process_handle );
284 if (ret == WAIT_TIMEOUT)
285 {
286 /* it didn't quit by itself in time, so terminate it with extreme prejudice */
287 HANDLE handle = OpenProcess( PROCESS_TERMINATE, FALSE, win[0].pid );
288 if (handle)
289 {
290 WINE_TRACE( "terminating process %04x\n", win[0].pid );
291 TerminateProcess( handle, 0 );
292 CloseHandle( handle );
293 }
294 }
295 return 1;
296 }
297
298 /* close all top-level windows and terminate processes cleanly */
299 BOOL shutdown_close_windows( BOOL force )
300 {
301 UINT send_flags = force ? SMTO_ABORTIFHUNG : SMTO_NORMAL;
302 DWORD_PTR result = 1;
303 UINT i, n;
304
305 if (!get_all_windows()) return FALSE;
306
307 GetWindowThreadProcessId( GetDesktopWindow(), &desktop_pid );
308
309 for (i = n = 0; result && i < win_count; i++, n++)
310 {
311 if (n && windows[i-1].pid != windows[i].pid)
312 {
313 result = send_end_session_messages( windows + i - n, n, send_flags );
314 n = 0;
315 }
316 }
317 if (n && result)
318 result = send_end_session_messages( windows + win_count - n, n, send_flags );
319
320 HeapFree( GetProcessHeap(), 0, windows );
321
322 return (result != 0);
323 }
324
325 /* forcibly kill all processes without any cleanup */
326 void kill_processes( BOOL kill_desktop )
327 {
328 BOOL res;
329 UINT killed;
330 HANDLE handle, snapshot;
331 PROCESSENTRY32W process;
332
333 GetWindowThreadProcessId( GetDesktopWindow(), &desktop_pid );
334
335 do
336 {
337 if (!(snapshot = CreateToolhelp32Snapshot( TH32CS_SNAPPROCESS, 0 ))) break;
338
339 killed = 0;
340 process.dwSize = sizeof(process);
341 for (res = Process32FirstW( snapshot, &process ); res; res = Process32NextW( snapshot, &process ))
342 {
343 if (process.th32ProcessID == GetCurrentProcessId()) continue;
344 if (process.th32ProcessID == desktop_pid) continue;
345 WINE_TRACE("killing process %04x %s\n",
346 process.th32ProcessID, wine_dbgstr_w(process.szExeFile) );
347 if (!(handle = OpenProcess( PROCESS_TERMINATE, FALSE, process.th32ProcessID )))
348 continue;
349 if (TerminateProcess( handle, 0 )) killed++;
350 CloseHandle( handle );
351 }
352 CloseHandle( snapshot );
353 } while (killed > 0);
354
355 if (desktop_pid && kill_desktop) /* do this last */
356 {
357 if ((handle = OpenProcess( PROCESS_TERMINATE, FALSE, desktop_pid )))
358 {
359 TerminateProcess( handle, 0 );
360 CloseHandle( handle );
361 }
362 }
363 }
364
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