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Sweden-Number/programs/wineboot/shutdown.c

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/*
* Copyright (C) 2006 Alexandre Julliard
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <stdarg.h>
#include <stdlib.h>
#include "windef.h"
#include "winbase.h"
#include "winuser.h"
#include "tlhelp32.h"
#include "wine/debug.h"
#include "resource.h"
WINE_DEFAULT_DEBUG_CHANNEL(wineboot);
#define MESSAGE_TIMEOUT 5000
struct window_info
{
HWND hwnd;
DWORD pid;
DWORD tid;
};
static UINT win_count;
static UINT win_max;
static struct window_info *windows;
static DWORD desktop_pid;
/* store a new window; callback for EnumWindows */
static BOOL CALLBACK enum_proc( HWND hwnd, LPARAM lp )
{
if (win_count >= win_max)
{
UINT new_count = win_max * 2;
struct window_info *new_win = HeapReAlloc( GetProcessHeap(), 0, windows,
new_count * sizeof(windows[0]) );
if (!new_win) return FALSE;
windows = new_win;
win_max = new_count;
}
windows[win_count].hwnd = hwnd;
windows[win_count].tid = GetWindowThreadProcessId( hwnd, &windows[win_count].pid );
win_count++;
return TRUE;
}
/* compare two window info structures; callback for qsort */
static int cmp_window( const void *ptr1, const void *ptr2 )
{
const struct window_info *info1 = ptr1;
const struct window_info *info2 = ptr2;
int ret = info1->pid - info2->pid;
if (!ret) ret = info1->tid - info2->tid;
return ret;
}
/* build the list of all windows (FIXME: handle multiple desktops) */
static BOOL get_all_windows(void)
{
win_count = 0;
win_max = 16;
windows = HeapAlloc( GetProcessHeap(), 0, win_max * sizeof(windows[0]) );
if (!windows) return FALSE;
if (!EnumWindows( enum_proc, 0 )) return FALSE;
/* sort windows by processes */
qsort( windows, win_count, sizeof(windows[0]), cmp_window );
return TRUE;
}
struct callback_data
{
UINT window_count;
BOOL timed_out;
LRESULT result;
};
static void CALLBACK end_session_message_callback( HWND hwnd, UINT msg, ULONG_PTR data, LRESULT lresult )
{
struct callback_data *cb_data = (struct callback_data *)data;
WINE_TRACE( "received response %s hwnd %p lresult %ld\n",
msg == WM_QUERYENDSESSION ? "WM_QUERYENDSESSION" : (msg == WM_ENDSESSION ? "WM_ENDSESSION" : "Unknown"),
hwnd, lresult );
/* we only care if a WM_QUERYENDSESSION response is FALSE */
cb_data->result = cb_data->result && lresult;
/* cheap way of ref-counting callback_data whilst freeing memory at correct
* time */
if (!(cb_data->window_count--) && cb_data->timed_out)
HeapFree( GetProcessHeap(), 0, cb_data );
}
struct endtask_dlg_data
{
struct window_info *win;
BOOL cancelled;
BOOL terminated;
};
static INT_PTR CALLBACK endtask_dlg_proc( HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam )
{
struct endtask_dlg_data *data;
HANDLE handle;
switch (msg)
{
case WM_INITDIALOG:
SetWindowLongPtrW( hwnd, DWLP_USER, lparam );
data = (struct endtask_dlg_data *)lparam;
ShowWindow( hwnd, SW_SHOWNORMAL );
return TRUE;
case WM_COMMAND:
data = (struct endtask_dlg_data *)GetWindowLongPtrW( hwnd, DWLP_USER );
switch (wparam)
{
case MAKEWPARAM(IDOK, BN_CLICKED):
handle = OpenProcess( PROCESS_TERMINATE, FALSE, data->win[0].pid );
if (handle)
{
WINE_TRACE( "terminating process %04x\n", data->win[0].pid );
TerminateProcess( handle, 0 );
CloseHandle( handle );
data->terminated = TRUE;
}
return TRUE;
case MAKEWPARAM(IDCANCEL, BN_CLICKED):
data->cancelled = TRUE;
return TRUE;
}
break;
}
return FALSE;
}
/* Sends a message to a set of windows, displaying a dialog if the window
* doesn't respond to the message within a set amount of time.
* If the process has already been terminated, the function returns -1.
* If the user or application cancels the process, the function returns 0.
* Otherwise the function returns 0. */
static LRESULT send_messages_with_timeout_dialog(
struct window_info *win, UINT count, HANDLE process_handle,
UINT msg, WPARAM wparam, LPARAM lparam )
{
unsigned int i;
DWORD ret;
DWORD start_time;
struct callback_data *cb_data;
HWND hwnd_endtask = NULL;
struct endtask_dlg_data dlg_data;
LRESULT result;
cb_data = HeapAlloc( GetProcessHeap(), 0, sizeof(*cb_data) );
if (!cb_data)
return 1;
cb_data->result = TRUE; /* we only care if a WM_QUERYENDSESSION response is FALSE */
cb_data->timed_out = FALSE;
cb_data->window_count = count;
dlg_data.win = win;
dlg_data.terminated = FALSE;
dlg_data.cancelled = FALSE;
for (i = 0; i < count; i++)
{
if (!SendMessageCallbackW( win[i].hwnd, msg, wparam, lparam,
end_session_message_callback, (ULONG_PTR)cb_data ))
cb_data->window_count --;
}
start_time = GetTickCount();
while (TRUE)
{
DWORD current_time = GetTickCount();
ret = MsgWaitForMultipleObjects( 1, &process_handle, FALSE,
MESSAGE_TIMEOUT - (current_time - start_time),
QS_ALLINPUT );
if (ret == WAIT_OBJECT_0) /* process exited */
{
HeapFree( GetProcessHeap(), 0, cb_data );
result = 1;
goto cleanup;
}
else if (ret == WAIT_OBJECT_0 + 1) /* window message */
{
MSG msg;
while(PeekMessageW( &msg, NULL, 0, 0, PM_REMOVE ))
{
if (!hwnd_endtask || !IsDialogMessageW( hwnd_endtask, &msg ))
{
TranslateMessage( &msg );
DispatchMessageW( &msg );
}
}
if (!cb_data->window_count)
{
result = dlg_data.terminated || cb_data->result;
HeapFree( GetProcessHeap(), 0, cb_data );
if (!result)
goto cleanup;
break;
}
if (dlg_data.cancelled)
{
cb_data->timed_out = TRUE;
result = 0;
goto cleanup;
}
}
else if ((ret == WAIT_TIMEOUT) && !hwnd_endtask)
{
hwnd_endtask = CreateDialogParamW( GetModuleHandleW(NULL),
MAKEINTRESOURCEW(IDD_ENDTASK),
NULL, endtask_dlg_proc,
(LPARAM)&dlg_data );
}
else break;
}
result = 1;
cleanup:
if (hwnd_endtask) DestroyWindow( hwnd_endtask );
return result;
}
/* send WM_QUERYENDSESSION and WM_ENDSESSION to all windows of a given process */
static DWORD_PTR send_end_session_messages( struct window_info *win, UINT count, UINT flags )
{
LRESULT result, end_session;
HANDLE process_handle;
DWORD ret;
/* FIXME: Use flags to implement EWX_FORCEIFHUNG! */
/* don't kill the desktop process */
if (win[0].pid == desktop_pid) return 1;
process_handle = OpenProcess( SYNCHRONIZE, FALSE, win[0].pid );
if (!process_handle)
return 1;
end_session = send_messages_with_timeout_dialog( win, count, process_handle,
WM_QUERYENDSESSION, 0, 0 );
if (end_session == -1)
{
CloseHandle( process_handle );
return 1;
}
result = send_messages_with_timeout_dialog( win, count, process_handle,
WM_ENDSESSION, end_session, 0 );
if (end_session == 0)
{
CloseHandle( process_handle );
return 0;
}
if (result == -1)
{
CloseHandle( process_handle );
return 1;
}
/* Check whether the app quit on its own */
ret = WaitForSingleObject( process_handle, 0 );
CloseHandle( process_handle );
if (ret == WAIT_TIMEOUT)
{
/* If not, it returned from all WM_ENDSESSION and is finished cleaning
* up, so we can safely kill the process. */
HANDLE handle = OpenProcess( PROCESS_TERMINATE, FALSE, win[0].pid );
if (handle)
{
WINE_TRACE( "terminating process %04x\n", win[0].pid );
TerminateProcess( handle, 0 );
CloseHandle( handle );
}
}
return 1;
}
/* close all top-level windows and terminate processes cleanly */
BOOL shutdown_close_windows( BOOL force )
{
UINT send_flags = force ? SMTO_ABORTIFHUNG : SMTO_NORMAL;
DWORD_PTR result = 1;
UINT i, n;
if (!get_all_windows()) return FALSE;
GetWindowThreadProcessId( GetDesktopWindow(), &desktop_pid );
for (i = n = 0; result && i < win_count; i++, n++)
{
if (n && windows[i-1].pid != windows[i].pid)
{
result = send_end_session_messages( windows + i - n, n, send_flags );
n = 0;
}
}
if (n && result)
result = send_end_session_messages( windows + win_count - n, n, send_flags );
HeapFree( GetProcessHeap(), 0, windows );
return (result != 0);
}
static BOOL CALLBACK shutdown_one_desktop( LPWSTR name, LPARAM force )
{
HDESK hdesk;
WINE_TRACE("Shutting down desktop %s\n", wine_dbgstr_w(name));
hdesk = OpenDesktopW( name, 0, FALSE, GENERIC_ALL );
if (hdesk == NULL)
{
WINE_ERR("Cannot open desktop %s, err=%i\n", wine_dbgstr_w(name), GetLastError());
return 0;
}
if (!SetThreadDesktop( hdesk ))
{
CloseDesktop( hdesk );
WINE_ERR("Cannot set thread desktop %s, err=%i\n", wine_dbgstr_w(name), GetLastError());
return 0;
}
CloseDesktop( hdesk );
return shutdown_close_windows( force );
}
BOOL shutdown_all_desktops( BOOL force )
{
BOOL ret;
HDESK prev_desktop;
prev_desktop = GetThreadDesktop(GetCurrentThreadId());
ret = EnumDesktopsW( NULL, shutdown_one_desktop, (LPARAM)force );
SetThreadDesktop(prev_desktop);
return ret;
}
/* forcibly kill all processes without any cleanup */
void kill_processes( BOOL kill_desktop )
{
BOOL res;
UINT killed;
HANDLE handle, snapshot;
PROCESSENTRY32W process;
GetWindowThreadProcessId( GetDesktopWindow(), &desktop_pid );
do
{
if (!(snapshot = CreateToolhelp32Snapshot( TH32CS_SNAPPROCESS, 0 ))) break;
killed = 0;
process.dwSize = sizeof(process);
for (res = Process32FirstW( snapshot, &process ); res; res = Process32NextW( snapshot, &process ))
{
if (process.th32ProcessID == GetCurrentProcessId()) continue;
if (process.th32ProcessID == desktop_pid) continue;
WINE_TRACE("killing process %04x %s\n",
process.th32ProcessID, wine_dbgstr_w(process.szExeFile) );
if (!(handle = OpenProcess( PROCESS_TERMINATE, FALSE, process.th32ProcessID )))
continue;
if (TerminateProcess( handle, 0 )) killed++;
CloseHandle( handle );
}
CloseHandle( snapshot );
} while (killed > 0);
if (desktop_pid && kill_desktop) /* do this last */
{
if ((handle = OpenProcess( PROCESS_TERMINATE, FALSE, desktop_pid )))
{
TerminateProcess( handle, 0 );
CloseHandle( handle );
}
}
}
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