programs/wineboot/shutdown.c

   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( GetModuleHandleW(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 }