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Before calling the timer window proc, make sure it is valid.

This commit is contained in:
Stephane Lussier 2000-09-29 00:56:05 +00:00 committed by Alexandre Julliard
parent cc9cfdff79
commit 6bac4f2c15
3 changed files with 46 additions and 0 deletions
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2
include/message.h
View File

@ -9,6 +9,7 @@
#include "windef.h"
#include "wine/windef16.h"
#include "winproc.h"
struct tagMSG;
@ -22,6 +23,7 @@ extern void TIMER_RemoveWindowTimers( HWND hwnd );
extern void TIMER_RemoveQueueTimers( HQUEUE16 hqueue );
extern BOOL TIMER_GetTimerMsg( struct tagMSG *msg, HWND hwnd,
HQUEUE16 hQueue, BOOL remove );
extern BOOL TIMER_IsTimerValid( HWND hwnd, UINT id, HWINDOWPROC hProc );
/* event.c */
extern void EVENT_Synchronize( void );

20
windows/message.c
View File

@ -2283,6 +2283,12 @@ LONG WINAPI DispatchMessage16( const MSG16* msg )
{
if (msg->lParam)
{
/* before calling window proc, verify it the timer is still valid,
there's a slim chance the application kill the timer between
getMessage and DisaptachMessage API calls */
if (!TIMER_IsTimerValid(msg->hwnd, (UINT) msg->wParam, (HWINDOWPROC) msg->lParam))
return 0; /* invalid winproc */
return CallWindowProc16( (WNDPROC16)msg->lParam, msg->hwnd,
msg->message, msg->wParam, GetTickCount() );
}
@ -2359,6 +2365,13 @@ LONG WINAPI DispatchMessageA( const MSG* msg )
if (msg->lParam)
{
/* HOOK_CallHooks32A( WH_CALLWNDPROC, HC_ACTION, 0, FIXME ); */
/* before calling window proc, verify it the timer is still valid,
there's a slim chance the application kill the timer between
getMessage and DisaptachMessage API calls */
if (!TIMER_IsTimerValid(msg->hwnd, (UINT) msg->wParam, (HWINDOWPROC) msg->lParam))
return 0; /* invalid winproc */
return CallWindowProcA( (WNDPROC)msg->lParam, msg->hwnd,
msg->message, msg->wParam, GetTickCount() );
}
@ -2434,6 +2447,13 @@ LONG WINAPI DispatchMessageW( const MSG* msg )
if (msg->lParam)
{
/* HOOK_CallHooks32W( WH_CALLWNDPROC, HC_ACTION, 0, FIXME ); */
/* before calling window proc, verify it the timer is still valid,
there's a slim chance the application kill the timer between
getMessage and DisaptachMessage API calls */
if (!TIMER_IsTimerValid(msg->hwnd, (UINT) msg->wParam, (HWINDOWPROC) msg->lParam))
return 0; /* invalid winproc */
return CallWindowProcW( (WNDPROC)msg->lParam, msg->hwnd,
msg->message, msg->wParam, GetTickCount() );
}

24
windows/timer.c
View File

@ -316,6 +316,30 @@ UINT WINAPI SetTimer( HWND hwnd, UINT id, UINT timeout,
}
/***********************************************************************
* TIMER_IsTimerValid
*/
BOOL TIMER_IsTimerValid( HWND hwnd, UINT id, HWINDOWPROC hProc )
{
int i;
TIMER *pTimer;
BOOL ret = FALSE;
EnterCriticalSection( &csTimer );
for (i = 0, pTimer = TimersArray; i < NB_TIMERS; i++, pTimer++)
if ((pTimer->hwnd == hwnd) && (pTimer->id == id) &&
(pTimer->proc == hProc))
{
ret = TRUE;
break;
}
LeaveCriticalSection( &csTimer );
return ret;
}
/***********************************************************************
* SetSystemTimer16 (USER.11)
*/