user32: Implement BroadcastSystemMessage.

dlls/user32/message.c

@@ -2,6 +2,7 @@
  * Window messaging support
  *
  * Copyright 2001 Alexandre Julliard
+ * Copyright 2008 Maarten Lankhorst
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
@@ -3343,24 +3344,113 @@ UINT WINAPI RegisterWindowMessageW( LPCWSTR str )
     return ret;
 }
 
+typedef struct BroadcastParm
+{
+    DWORD flags;
+    LPDWORD recipients;
+    UINT msg;
+    WPARAM wp;
+    LPARAM lp;
+    DWORD success;
+    HWINSTA winsta;
+} BroadcastParm;
 
-/***********************************************************************
- *		BroadcastSystemMessageA (USER32.@)
- *		BroadcastSystemMessage  (USER32.@)
- */
-LONG WINAPI BroadcastSystemMessageA( DWORD flags, LPDWORD recipients, UINT msg, WPARAM wp, LPARAM lp )
+static BOOL CALLBACK bcast_childwindow( HWND hw, LPARAM lp )
 {
-    if ((*recipients & BSM_APPLICATIONS) || (*recipients == BSM_ALLCOMPONENTS))
+    BroadcastParm *parm = (BroadcastParm*)lp;
+    DWORD_PTR retval = 0;
+    LONG lresult;
+
+    if (parm->flags & BSF_IGNORECURRENTTASK && WIN_IsCurrentProcess(hw))
+    {
+        TRACE("Not telling myself %p\n", hw);
+        return TRUE;
+    }
+
+    /* I don't know 100% for sure if this is what Windows does, but it fits the tests */
+    if (parm->flags & BSF_QUERY)
+    {
+        TRACE("Telling window %p using SendMessageTimeout\n", hw);
+
+        /* Not tested for conflicting flags */
+        if (parm->flags & BSF_FORCEIFHUNG || parm->flags & BSF_NOHANG)
+            lresult = SendMessageTimeoutW( hw, parm->msg, parm->wp, parm->lp, SMTO_ABORTIFHUNG, 2000, &retval );
+        else if (parm->flags & BSF_NOTIMEOUTIFNOTHUNG)
+            lresult = SendMessageTimeoutW( hw, parm->msg, parm->wp, parm->lp, SMTO_NOTIMEOUTIFNOTHUNG, 2000, &retval );
+        else
+            lresult = SendMessageTimeoutW( hw, parm->msg, parm->wp, parm->lp, SMTO_NORMAL, 2000, &retval );
+
+        if (!lresult && GetLastError() == ERROR_TIMEOUT)
+        {
+            WARN("Timed out!\n");
+            if (!(parm->flags & BSF_FORCEIFHUNG))
+                goto fail;
+        }
+        if (retval == BROADCAST_QUERY_DENY)
+            goto fail;
+
+        return TRUE;
+
+fail:
+        parm->success = 0;
+        return FALSE;
+    }
+    else if (parm->flags & BSF_POSTMESSAGE)
     {
-        FIXME( "(%08x,%08x,%08x,%08lx,%08lx): semi-stub!\n", flags, *recipients, msg, wp, lp );
-        PostMessageA( HWND_BROADCAST, msg, wp, lp );
-        return 1;
+        TRACE("Telling window %p using PostMessage\n", hw);
+        PostMessageW( hw, parm->msg, parm->wp, parm->lp );
     }
     else
     {
-        FIXME( "(%08x,%08x,%08x,%08lx,%08lx): stub!\n", flags, *recipients, msg, wp, lp);
-        return -1;
+        TRACE("Telling window %p using SendNotifyMessage\n", hw);
+        SendNotifyMessageW( hw, parm->msg, parm->wp, parm->lp );
     }
+
+    return TRUE;
+}
+
+static BOOL CALLBACK bcast_desktop( LPWSTR desktop, LPARAM lp )
+{
+    BOOL ret;
+    HDESK hdesktop;
+    BroadcastParm *parm = (BroadcastParm*)lp;
+
+    TRACE("desktop: %s\n", debugstr_w( desktop ));
+
+    hdesktop = open_winstation_desktop( parm->winsta, desktop, 0, FALSE, DESKTOP_ENUMERATE|DESKTOP_WRITEOBJECTS|STANDARD_RIGHTS_WRITE );
+    if (!hdesktop)
+    {
+        FIXME("Could not open desktop %s\n", debugstr_w(desktop));
+        return TRUE;
+    }
+
+    ret = EnumDesktopWindows( hdesktop, bcast_childwindow, lp );
+    CloseDesktop(hdesktop);
+    TRACE("-->%d\n", ret);
+    return parm->success;
+}
+
+static BOOL CALLBACK bcast_winsta( LPWSTR winsta, LPARAM lp )
+{
+    BOOL ret;
+    HWINSTA hwinsta = OpenWindowStationW( winsta, FALSE, WINSTA_ENUMDESKTOPS );
+    TRACE("hwinsta: %p/%s/%08x\n", hwinsta, debugstr_w( winsta ), GetLastError());
+    if (!hwinsta)
+        return TRUE;
+    ((BroadcastParm *)lp)->winsta = hwinsta;
+    ret = EnumDesktopsW( hwinsta, bcast_desktop, lp );
+    CloseWindowStation( hwinsta );
+    TRACE("-->%d\n", ret);
+    return ret;
+}
+
+/***********************************************************************
+ *		BroadcastSystemMessageA (USER32.@)
+ *		BroadcastSystemMessage  (USER32.@)
+ */
+LONG WINAPI BroadcastSystemMessageA( DWORD flags, LPDWORD recipients, UINT msg, WPARAM wp, LPARAM lp )
+{
+    return BroadcastSystemMessageExA( flags, recipients, msg, wp, lp, NULL );
 }
 
 
@@ -3369,19 +3459,65 @@ LONG WINAPI BroadcastSystemMessageA( DWORD flags, LPDWORD recipients, UINT msg,
  */
 LONG WINAPI BroadcastSystemMessageW( DWORD flags, LPDWORD recipients, UINT msg, WPARAM wp, LPARAM lp )
 {
-    if ((*recipients & BSM_APPLICATIONS) || (*recipients == BSM_ALLCOMPONENTS))
+    return BroadcastSystemMessageExW( flags, recipients, msg, wp, lp, NULL );
+}
+
+/***********************************************************************
+ *              BroadcastSystemMessageExA (USER32.@)
+ */
+LONG WINAPI BroadcastSystemMessageExA( DWORD flags, LPDWORD recipients, UINT msg, WPARAM wp, LPARAM lp, PBSMINFO pinfo )
+{
+    map_wparam_AtoW( msg, &wp, WMCHAR_MAP_NOMAPPING );
+    return BroadcastSystemMessageExW( flags, recipients, msg, wp, lp, NULL );
+}
+
+
+/***********************************************************************
+ *              BroadcastSystemMessageExW (USER32.@)
+ */
+LONG WINAPI BroadcastSystemMessageExW( DWORD flags, LPDWORD recipients, UINT msg, WPARAM wp, LPARAM lp, PBSMINFO pinfo )
+{
+    BroadcastParm parm;
+    DWORD recips = BSM_ALLCOMPONENTS;
+    BOOL ret = TRUE;
+    static const DWORD all_flags = ( BSF_QUERY | BSF_IGNORECURRENTTASK | BSF_FLUSHDISK | BSF_NOHANG
+                                   | BSF_POSTMESSAGE | BSF_FORCEIFHUNG | BSF_NOTIMEOUTIFNOTHUNG
+                                   | BSF_ALLOWSFW | BSF_SENDNOTIFYMESSAGE | BSF_RETURNHDESK | BSF_LUID );
+
+    TRACE("Flags: %08x, recipients: %p(0x%x), msg: %04x, wparam: %08lx, lparam: %08lx\n", flags, recipients,
+         (recipients ? *recipients : recips), msg, wp, lp);
+
+    if (flags & ~all_flags)
     {
-        FIXME( "(%08x,%08x,%08x,%08lx,%08lx): semi-stub!\n", flags, *recipients, msg, wp, lp );
-        PostMessageW( HWND_BROADCAST, msg, wp, lp );
-        return 1;
+        SetLastError(ERROR_INVALID_PARAMETER);
+        return 0;
     }
-    else
+
+    if (!recipients)
+        recipients = &recips;
+
+    if ( pinfo && flags & BSF_QUERY )
+        FIXME("Not returning PBSMINFO information yet\n");
+
+    parm.flags = flags;
+    parm.recipients = recipients;
+    parm.msg = msg;
+    parm.wp = wp;
+    parm.lp = lp;
+    parm.success = TRUE;
+
+    if (*recipients & BSM_ALLDESKTOPS || *recipients == BSM_ALLCOMPONENTS)
+        ret = EnumWindowStationsW(bcast_winsta, (LONG_PTR)&parm);
+    else if (*recipients & BSM_APPLICATIONS)
     {
-        FIXME( "(%08x,%08x,%08x,%08lx,%08lx): stub!\n", flags, *recipients, msg, wp, lp );
-        return -1;
+        EnumWindows(bcast_childwindow, (LONG_PTR)&parm);
+        ret = parm.success;
     }
-}
+    else
+        FIXME("Recipients %08x not supported!\n", *recipients);
 
+    return ret;
+}
 
 /***********************************************************************
  *		SetMessageQueue (USER32.@)

dlls/user32/tests/Makefile.in

@@ -6,6 +6,7 @@ TESTDLL   = user32.dll
 IMPORTS   = user32 gdi32 advapi32 kernel32
 
 CTESTS = \
+	broadcast.c \
 	class.c \
 	clipboard.c \
 	combo.c \

dlls/user32/tests/broadcast.c

+/*
+ * Unit tests for BroadcastSystemMessage
+ *
+ * Copyright 2008 Maarten Lankhorst
+ *
+ * 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 <assert.h>
+#include <stdarg.h>
+#include <stdio.h>
+
+#define _WIN32_WINNT 0x0501
+
+#include "windef.h"
+#include "winbase.h"
+#include "wingdi.h"
+#include "winuser.h"
+#include "winnls.h"
+
+#include "wine/test.h"
+
+typedef LONG WINAPI (*PBROADCAST)( DWORD,LPDWORD,UINT,WPARAM,LPARAM );
+typedef LONG WINAPI (*PBROADCASTEX)( DWORD,LPDWORD,UINT,WPARAM,LPARAM,PBSMINFO );
+static PBROADCAST pBroadcastA;
+static PBROADCAST pBroadcastW;
+static PBROADCASTEX pBroadcastExA;
+static PBROADCASTEX pBroadcastExW;
+static HANDLE hevent;
+
+static LRESULT WINAPI main_window_procA(HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam)
+{
+    if (msg == WM_NULL)
+    {
+        trace("main_window_procA: Sleeping for %lu ms\n", wparam);
+        if (wparam)
+        {
+            if (WaitForSingleObject(hevent, wparam) == WAIT_TIMEOUT)
+                SetEvent(hevent);
+        }
+        trace("main_window_procA: Returning WM_NULL with parameter %08lx\n", lparam);
+        return lparam;
+    }
+
+    return DefWindowProcA(hwnd, msg, wparam, lparam);
+}
+
+static BOOL init_procs(void)
+{
+    WNDCLASSA cls;
+    HANDLE user32 = GetModuleHandle("user32");
+    pBroadcastA = (PBROADCAST)GetProcAddress(user32, "BroadcastSystemMessageA");
+    if (!pBroadcastA)
+        pBroadcastA = (PBROADCAST)GetProcAddress(user32, "BroadcastSystemMessage");
+    ok(pBroadcastA != NULL, "No BroadcastSystemMessage found\n");
+    if (!pBroadcastA)
+        return FALSE;
+
+    pBroadcastW = (PBROADCAST)GetProcAddress(user32, "BroadcastSystemMessageW");
+    pBroadcastExA = (PBROADCASTEX)GetProcAddress(user32, "BroadcastSystemMessageExA");
+    pBroadcastExW = (PBROADCASTEX)GetProcAddress(user32, "BroadcastSystemMessageExW");
+
+    hevent = CreateEventA(NULL, TRUE, FALSE, "Asynchronous checking event");
+
+    cls.style = CS_DBLCLKS;
+    cls.lpfnWndProc = main_window_procA;
+    cls.cbClsExtra = 0;
+    cls.cbWndExtra = 0;
+    cls.hInstance = GetModuleHandleA(0);
+    cls.hIcon = 0;
+    cls.hCursor = LoadCursorA(0, (LPSTR)IDC_ARROW);
+    cls.hbrBackground = GetStockObject(WHITE_BRUSH);
+    cls.lpszMenuName = NULL;
+    cls.lpszClassName = "MainWindowClass";
+
+    if (!RegisterClassA(&cls))
+        return 0;
+
+    if (!CreateWindowExA(0, "MainWindowClass", "Main window", WS_CAPTION | WS_SYSMENU |
+                               WS_MINIMIZEBOX | WS_MAXIMIZEBOX | WS_POPUP, 100, 100, 200,
+                               200, 0, 0, GetModuleHandle(0), NULL))
+        return FALSE;
+    return TRUE;
+}
+
+static void test_parameters(PBROADCAST broadcast)
+{
+    LONG ret;
+    DWORD recips;
+
+    SetLastError(0xcafebabe);
+    recips = BSM_APPLICATIONS;
+    ret = broadcast( 0x80000000, &recips, WM_NULL, 0, 0 );
+    ok(GetLastError() == ERROR_INVALID_PARAMETER, "Last error: %08x\n", GetLastError());
+    ok(!ret, "Returned: %d\n", ret);
+
+    SetLastError(0xcafebabe);
+    recips = BSM_APPLICATIONS;
+    ret = broadcast( 0x80000000, &recips, WM_NULL, 0, 0 );
+    ok(GetLastError() == ERROR_INVALID_PARAMETER, "Last error: %08x\n", GetLastError());
+    ok(!ret, "Returned: %d\n", ret);
+
+#if 0 /* TODO: Check the hang flags */
+    SetLastError(0xcafebabe);
+    recips = BSM_APPLICATIONS;
+    ret = broadcast( BSF_QUERY|(BSF_NOHANG|BSF_FORCEIFHUNG), &recips, WM_NULL, 30000, 0 );
+    ok(0, "Last error: %08x\n", GetLastError());
+    ok(0, "Returned: %d\n", ret);
+
+    SetLastError(0xcafebabe);
+    recips = BSM_APPLICATIONS;
+    ret = broadcast( BSF_QUERY|(BSF_NOHANG|BSF_NOTIMEOUTIFNOTHUNG), &recips, WM_NULL, 30000, 0 );
+    ok(0, "Last error: %08x\n", GetLastError());
+    ok(0, "Returned: %d\n", ret);
+
+    SetLastError(0xcafebabe);
+    recips = BSM_APPLICATIONS;
+    ret = broadcast( BSF_QUERY|(BSF_NOTIMEOUTIFNOTHUNG|BSF_FORCEIFHUNG), &recips, WM_NULL, 30000, 0 );
+    ok(0, "Last error: %08x\n", GetLastError());
+    ok(0, "Returned: %d\n", ret);
+
+    SetLastError(0xcafebabe);
+    recips = BSM_APPLICATIONS;
+    ret = broadcast( BSF_POSTMESSAGE|(BSF_NOTIMEOUTIFNOTHUNG|BSF_FORCEIFHUNG), &recips, WM_NULL, 30000, 0 );
+    ok(0, "Last error: %08x\n", GetLastError());
+    ok(0, "Returned: %d\n", ret);
+#endif
+
+    recips = BSM_APPLICATIONS;
+    ResetEvent(hevent);
+    ret = broadcast( BSF_POSTMESSAGE|BSF_QUERY, &recips, WM_NULL, 100, 0 );
+    ok(ret==1, "Returned: %d\n", ret);
+    ok(WaitForSingleObject(hevent, 0) != WAIT_TIMEOUT, "Asynchronous message sent instead\n");
+    PulseEvent(hevent);
+
+    recips = BSM_APPLICATIONS;
+    ret = broadcast( BSF_POSTMESSAGE|BSF_SENDNOTIFYMESSAGE, &recips, WM_NULL, 100, 0 );
+    ok(ret==1, "Returned: %d\n", ret);
+    ok(WaitForSingleObject(hevent, 0) != WAIT_OBJECT_0, "Synchronous message sent instead\n");
+    PulseEvent(hevent);
+
+    recips = BSM_APPLICATIONS;
+    ret = broadcast( BSF_SENDNOTIFYMESSAGE, &recips, WM_NULL, 100, BROADCAST_QUERY_DENY );
+    ok(ret==1, "Returned: %d\n", ret);
+    ok(WaitForSingleObject(hevent, 0) != WAIT_TIMEOUT, "Asynchronous message sent instead\n");
+    PulseEvent(hevent);
+
+    recips = BSM_APPLICATIONS;
+    ret = broadcast( BSF_SENDNOTIFYMESSAGE|BSF_QUERY, &recips, WM_NULL, 100, BROADCAST_QUERY_DENY );
+    ok(!ret, "Returned: %d\n", ret);
+    ok(WaitForSingleObject(hevent, 0) != WAIT_TIMEOUT, "Asynchronous message sent instead\n");
+    PulseEvent(hevent);
+
+    recips = BSM_APPLICATIONS;
+    ret = broadcast( 0, &recips, WM_NULL, 100, 0 );
+    ok(ret==1, "Returned: %d\n", ret);
+    ok(WaitForSingleObject(hevent, 0) != WAIT_TIMEOUT, "Asynchronous message sent instead\n");
+    PulseEvent(hevent);
+}
+
+/* BSF_SENDNOTIFYMESSAGE and BSF_QUERY are both synchronous within the same process
+ * However you should be able to distinguish them by sending the BROADCAST_QUERY_DENY flag
+ */
+
+static void test_parametersEx(PBROADCASTEX broadcastex)
+{
+    LONG ret;
+    DWORD recips;
+
+    SetLastError(0xcafebabe);
+    recips = BSM_APPLICATIONS;
+    ret = broadcastex( 0x80000000, &recips, WM_NULL, 0, 0, NULL );
+    ok(GetLastError() == ERROR_INVALID_PARAMETER, "Last error: %08x\n", GetLastError());
+    ok(!ret, "Returned: %d\n", ret);
+
+    SetLastError(0xcafebabe);
+    recips = BSM_APPLICATIONS;
+    ret = broadcastex( 0x80000000, &recips, WM_NULL, 0, 0, NULL );
+    ok(GetLastError() == ERROR_INVALID_PARAMETER, "Last error: %08x\n", GetLastError());
+    ok(!ret, "Returned: %d\n", ret);
+
+#if 0 /* TODO: Check the hang flags */
+    SetLastError(0xcafebabe);
+    recips = BSM_APPLICATIONS;
+    ret = broadcast( BSF_QUERY|(BSF_NOHANG|BSF_FORCEIFHUNG), &recips, WM_NULL, 30000, 0, NULL );
+    ok(0, "Last error: %08x\n", GetLastError());
+    ok(0, "Returned: %d\n", ret);
+
+    SetLastError(0xcafebabe);
+    recips = BSM_APPLICATIONS;
+    ret = broadcast( BSF_QUERY|(BSF_NOHANG|BSF_NOTIMEOUTIFNOTHUNG), &recips, WM_NULL, 30000, 0, NULL );
+    ok(0, "Last error: %08x\n", GetLastError());
+    ok(0, "Returned: %d\n", ret);
+
+    SetLastError(0xcafebabe);
+    recips = BSM_APPLICATIONS;
+    ret = broadcast( BSF_QUERY|(BSF_NOTIMEOUTIFNOTHUNG|BSF_FORCEIFHUNG), &recips, WM_NULL, 30000, 0, NULL );
+    ok(0, "Last error: %08x\n", GetLastError());
+    ok(0, "Returned: %d\n", ret);
+
+    SetLastError(0xcafebabe);
+    recips = BSM_APPLICATIONS;
+    ret = broadcast( BSF_POSTMESSAGE|(BSF_NOTIMEOUTIFNOTHUNG|BSF_FORCEIFHUNG), &recips, WM_NULL, 30000, 0, NULL );
+    ok(0, "Last error: %08x\n", GetLastError());
+    ok(0, "Returned: %d\n", ret);
+#endif
+
+    recips = BSM_APPLICATIONS;
+    ResetEvent(hevent);
+    ret = broadcastex( BSF_POSTMESSAGE|BSF_QUERY, &recips, WM_NULL, 100, 0, NULL );
+    ok(ret==1, "Returned: %d\n", ret);
+    ok(WaitForSingleObject(hevent, 0) != WAIT_TIMEOUT, "Asynchronous message sent instead\n");
+    PulseEvent(hevent);
+
+    recips = BSM_APPLICATIONS;
+    ret = broadcastex( BSF_POSTMESSAGE|BSF_SENDNOTIFYMESSAGE, &recips, WM_NULL, 100, 0, NULL );
+    ok(ret==1, "Returned: %d\n", ret);
+    ok(WaitForSingleObject(hevent, 0) != WAIT_OBJECT_0, "Synchronous message sent instead\n");
+    PulseEvent(hevent);
+
+    recips = BSM_APPLICATIONS;
+    ret = broadcastex( BSF_SENDNOTIFYMESSAGE, &recips, WM_NULL, 100, BROADCAST_QUERY_DENY, NULL );
+    ok(ret==1, "Returned: %d\n", ret);
+    ok(WaitForSingleObject(hevent, 0) != WAIT_TIMEOUT, "Asynchronous message sent instead\n");
+    PulseEvent(hevent);
+
+    recips = BSM_APPLICATIONS;
+    ret = broadcastex( BSF_SENDNOTIFYMESSAGE|BSF_QUERY, &recips, WM_NULL, 100, BROADCAST_QUERY_DENY, NULL );
+    ok(!ret, "Returned: %d\n", ret);
+    ok(WaitForSingleObject(hevent, 0) != WAIT_TIMEOUT, "Asynchronous message sent instead\n");
+    PulseEvent(hevent);
+
+    recips = BSM_APPLICATIONS;
+    ret = broadcastex( 0, &recips, WM_NULL, 100, 0, NULL );
+    ok(ret==1, "Returned: %d\n", ret);
+    ok(WaitForSingleObject(hevent, 0) != WAIT_TIMEOUT, "Asynchronous message sent instead\n");
+    PulseEvent(hevent);
+}
+
+static BOOL WINAPI (*pOpenProcessToken)(HANDLE, DWORD, HANDLE*);
+static BOOL WINAPI (*pAdjustTokenPrivileges)(HANDLE, BOOL, PTOKEN_PRIVILEGES, DWORD, PTOKEN_PRIVILEGES, PDWORD);
+
+static void test_noprivileges(void)
+{
+    HANDLE advapi32 = GetModuleHandleA("advapi32");
+    HANDLE token;
+    DWORD recips;
+    BOOL ret;
+
+    pOpenProcessToken = (void *)GetProcAddress(advapi32, "OpenProcessToken");
+    pAdjustTokenPrivileges = (void *)GetProcAddress(advapi32, "AdjustTokenPrivileges");
+    if (!pOpenProcessToken || !pAdjustTokenPrivileges || !pOpenProcessToken(GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES, &token))
+    {
+        skip("Can't open security token for process\n");
+        return;
+    }
+    if (!pAdjustTokenPrivileges(token, TRUE, NULL, 0, NULL, NULL))
+    {
+        skip("Can't adjust security token for process\n");
+        return;
+    }
+
+    trace("Trying privileged edition!\n");
+    SetLastError(0xcafebabe);
+    recips = BSM_ALLDESKTOPS;
+    ResetEvent(hevent);
+    ret = pBroadcastExW( BSF_QUERY, &recips, WM_NULL, 100, 0, NULL );
+    todo_wine ok(GetLastError() == ERROR_PRIVILEGE_NOT_HELD, "Last error: %08x\n", GetLastError());
+    ok(ret==1, "Returned: %d\n", ret);
+    ok(WaitForSingleObject(hevent, 0) != WAIT_TIMEOUT, "Asynchronous message sent instead\n");
+    ok(recips == BSM_ALLDESKTOPS, "Received by: %08x\n", recips);
+    PulseEvent(hevent);
+
+    /* Wine sets last error to 0, so just use that one as token here so it doesn't fail */
+    SetLastError(0);
+    recips = BSM_ALLCOMPONENTS;
+    ResetEvent(hevent);
+    ret = pBroadcastExW( BSF_QUERY, &recips, WM_NULL, 100, 0, NULL );
+    ok(!GetLastError(), "Last error: %08x\n", GetLastError());
+    ok(ret==1, "Returned: %d\n", ret);
+    ok(WaitForSingleObject(hevent, 0) != WAIT_TIMEOUT, "Asynchronous message sent instead\n");
+    ok(recips == BSM_ALLCOMPONENTS, "Received by: %08x\n", recips);
+    PulseEvent(hevent);
+
+    SetLastError(0xcafebabe);
+    recips = BSM_ALLDESKTOPS|BSM_APPLICATIONS;
+    ResetEvent(hevent);
+    ret = pBroadcastExW( BSF_QUERY, &recips, WM_NULL, 100, 0, NULL );
+    todo_wine ok(GetLastError() == ERROR_PRIVILEGE_NOT_HELD, "Last error: %08x\n", GetLastError());
+    ok(ret==1, "Returned: %d\n", ret);
+    ok(WaitForSingleObject(hevent, 0) != WAIT_TIMEOUT, "Asynchronous message sent instead\n");
+    ok(recips == (BSM_ALLDESKTOPS|BSM_APPLICATIONS), "Received by: %08x\n", recips);
+    PulseEvent(hevent);
+
+    SetLastError(0xcafebabe);
+    recips = BSM_ALLDESKTOPS|BSM_APPLICATIONS;
+    ResetEvent(hevent);
+    ret = pBroadcastExW( BSF_QUERY, &recips, WM_NULL, 100, BROADCAST_QUERY_DENY, NULL );
+    todo_wine ok(GetLastError() == ERROR_PRIVILEGE_NOT_HELD, "Last error: %08x\n", GetLastError());
+    ok(!ret, "Returned: %d\n", ret);
+    ok(WaitForSingleObject(hevent, 0) != WAIT_TIMEOUT, "Asynchronous message sent instead\n");
+    ok(recips == (BSM_ALLDESKTOPS|BSM_APPLICATIONS), "Received by: %08x\n", recips);
+    PulseEvent(hevent);
+}
+
+START_TEST(broadcast)
+{
+    if (!init_procs())
+        return;
+
+    trace("Running BroadcastSystemMessageA tests\n");
+    test_parameters(pBroadcastA);
+    if (pBroadcastW)
+    {
+        trace("Running BroadcastSystemMessageW tests\n");
+        test_parameters(pBroadcastW);
+    }
+    else
+        skip("No BroadcastSystemMessageW, skipping\n");
+    if (pBroadcastExA)
+    {
+        trace("Running BroadcastSystemMessageExA tests\n");
+        test_parametersEx(pBroadcastExA);
+    }
+    else
+        skip("No BroadcastSystemMessageExA, skipping\n");
+    if (pBroadcastExW)
+    {
+        trace("Running BroadcastSystemMessageExW tests\n");
+        test_parametersEx(pBroadcastExW);
+        trace("Attempting privileges checking tests\n");
+        test_noprivileges();
+    }
+    else
+        skip("No BroadcastSystemMessageExW, skipping\n");
+}

dlls/user32/user32.spec

@@ -16,8 +16,8 @@
 @ stdcall BringWindowToTop(long)
 @ stdcall BroadcastSystemMessage(long ptr long long long) BroadcastSystemMessageA
 @ stdcall BroadcastSystemMessageA(long ptr long long long)
-# @ stub BroadcastSystemMessageExA
-# @ stub BroadcastSystemMessageExW
+@ stdcall BroadcastSystemMessageExA(long ptr long long long ptr)
+@ stdcall BroadcastSystemMessageExW(long ptr long long long ptr)
 @ stdcall BroadcastSystemMessageW(long ptr long long long)
 # @ stub BuildReasonArray
 @ stdcall CalcChildScroll(long long)

dlls/user32/win.h

@@ -89,6 +89,7 @@ extern BOOL WIN_IsWindowDrawable( HWND hwnd, BOOL ) DECLSPEC_HIDDEN;
 extern HWND *WIN_ListChildren( HWND hwnd ) DECLSPEC_HIDDEN;
 extern LONG_PTR WIN_SetWindowLong( HWND hwnd, INT offset, UINT size, LONG_PTR newval, BOOL unicode ) DECLSPEC_HIDDEN;
 extern void MDI_CalcDefaultChildPos( HWND hwndClient, INT total, LPPOINT lpPos, INT delta, UINT *id ) DECLSPEC_HIDDEN;
+extern HDESK open_winstation_desktop( HWINSTA hwinsta, LPCWSTR name, DWORD flags, BOOL inherit, ACCESS_MASK access ) DECLSPEC_HIDDEN;
 
 /* user lock */
 extern void USER_Lock(void) DECLSPEC_HIDDEN;

dlls/user32/winstation.c

@@ -317,10 +317,7 @@ HDESK WINAPI OpenDesktopA( LPCSTR name, DWORD flags, BOOL inherit, ACCESS_MASK a
 }
 
 
-/******************************************************************************
- *              OpenDesktopW   (USER32.@)
- */
-HDESK WINAPI OpenDesktopW( LPCWSTR name, DWORD flags, BOOL inherit, ACCESS_MASK access )
+HDESK open_winstation_desktop( HWINSTA hwinsta, LPCWSTR name, DWORD flags, BOOL inherit, ACCESS_MASK access )
 {
     HANDLE ret = 0;
     DWORD len = name ? strlenW(name) : 0;
@@ -331,6 +328,7 @@ HDESK WINAPI OpenDesktopW( LPCWSTR name, DWORD flags, BOOL inherit, ACCESS_MASK
     }
     SERVER_START_REQ( open_desktop )
     {
+        req->winsta     = hwinsta;
         req->flags      = flags;
         req->access     = access;
         req->attributes = OBJ_CASE_INSENSITIVE | (inherit ? OBJ_INHERIT : 0);
@@ -342,6 +340,15 @@ HDESK WINAPI OpenDesktopW( LPCWSTR name, DWORD flags, BOOL inherit, ACCESS_MASK
 }
 
 
+/******************************************************************************
+ *              OpenDesktopW   (USER32.@)
+ */
+HDESK WINAPI OpenDesktopW( LPCWSTR name, DWORD flags, BOOL inherit, ACCESS_MASK access )
+{
+    return open_winstation_desktop( NULL, name, flags, inherit, access );
+}
+
+
 /***********************************************************************
  *              CloseDesktop  (USER32.@)
  */

include/wine/server_protocol.h

@@ -3299,6 +3299,7 @@ struct create_desktop_reply
 struct open_desktop_request
 {
     struct request_header __header;
+    obj_handle_t winsta;
     unsigned int flags;
     unsigned int access;
     unsigned int attributes;
@@ -4995,6 +4996,6 @@ union generic_reply
     struct add_fd_completion_reply add_fd_completion_reply;
 };
 
-#define SERVER_PROTOCOL_VERSION 338
+#define SERVER_PROTOCOL_VERSION 339
 
 #endif /* __WINE_WINE_SERVER_PROTOCOL_H */

server/protocol.def

@@ -2399,6 +2399,7 @@ enum message_type
 
 /* Open a handle to a desktop */
 @REQ(open_desktop)
+    obj_handle_t winsta;          /* window station to open (null allowed) */
     unsigned int flags;           /* desktop flags */
     unsigned int access;          /* wanted access rights */
     unsigned int attributes;      /* object attributes */

server/trace.c

@@ -2972,6 +2972,7 @@ static void dump_create_desktop_reply( const struct create_desktop_reply *req )
 
 static void dump_open_desktop_request( const struct open_desktop_request *req )
 {
+    fprintf( stderr, " winsta=%p,", req->winsta );
     fprintf( stderr, " flags=%08x,", req->flags );
     fprintf( stderr, " access=%08x,", req->access );
     fprintf( stderr, " attributes=%08x,", req->attributes );

server/winstation.c

@@ -508,7 +508,14 @@ DECL_HANDLER(open_desktop)
     struct unicode_str name;
 
     get_req_unicode_str( &name );
-    if ((winstation = get_process_winstation( current->process, 0 /* FIXME: access rights? */ )))
+
+    /* FIXME: check access rights */
+    if (!req->winsta)
+        winstation = get_process_winstation( current->process, 0 );
+    else
+        winstation = (struct winstation *)get_handle_obj( current->process, req->winsta, 0, &winstation_ops );
+
+    if (winstation)
     {
         struct unicode_str full_str;
         WCHAR *full_name;