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- Guard against out of bounds access to KeyboardLayout->pusVSCtoVK in W32kKeyProcessMessage.

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- Fixed SetKeyState to correctly index the keyboard state table.

svn path=/trunk/; revision=9995
This commit is contained in:
Filip Navara 2004-07-04 17:08:40 +00:00
parent 78ae714754
commit dd64375195
1 changed files with 39 additions and 27 deletions
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66
reactos/subsys/win32k/ntuser/keyboard.c
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@ -16,7 +16,7 @@
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* $Id: keyboard.c,v 1.29 2004/05/10 17:07:18 weiden Exp $
/* $Id: keyboard.c,v 1.30 2004/07/04 17:08:40 navaraf Exp $
*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel
@ -82,35 +82,44 @@ static UINT DontDistinguishShifts( UINT ret ) {
}
static VOID STDCALL SetKeyState(DWORD key, DWORD vk, DWORD ext, BOOL down) {
ASSERT(vk <= 0xff);
/* Special handling for toggles like numpad and caps lock */
if (vk == VK_CAPITAL || vk == VK_NUMLOCK)
{
if (down) QueueKeyStateTable[key] ^= 1;
}
if (vk == VK_LSHIFT && ext) {
SetKeyState(VK_RSHIFT, 0, 0, down);
} else if (vk == VK_LSHIFT || vk == VK_SHIFT) {
SetKeyState(VK_LSHIFT, 0, 0, down);
}
if (vk == VK_LCONTROL && ext) {
SetKeyState(VK_RCONTROL, 0, 0, down);
} else if (vk == VK_LCONTROL || vk == VK_CONTROL) {
SetKeyState(VK_LCONTROL, 0, 0, down);
}
if (vk == VK_LMENU && ext) {
SetKeyState(VK_RMENU, 0, 0, down);
} else if (vk == VK_LMENU || vk == VK_MENU) {
SetKeyState(VK_LMENU, 0, 0, down);
}
if (vk == VK_CAPITAL || vk == VK_NUMLOCK) {
if (down) QueueKeyStateTable[vk] ^= KS_LOCK_BIT;
}
if (down)
QueueKeyStateTable[key] |= KS_DOWN_BIT;
QueueKeyStateTable[vk] |= KS_DOWN_BIT;
else
QueueKeyStateTable[key] &= ~KS_DOWN_MASK;
QueueKeyStateTable[vk] &= ~KS_DOWN_MASK;
if (vk == VK_LSHIFT || vk == VK_RSHIFT) {
if ((QueueKeyStateTable[VK_LSHIFT] & KS_DOWN_BIT) ||
(QueueKeyStateTable[VK_RSHIFT] & KS_DOWN_BIT)) {
QueueKeyStateTable[VK_SHIFT] |= KS_DOWN_BIT;
} else {
QueueKeyStateTable[VK_SHIFT] &= ~KS_DOWN_MASK;
}
}
if (vk == VK_LCONTROL || vk == VK_RCONTROL) {
if ((QueueKeyStateTable[VK_LCONTROL] & KS_DOWN_BIT) ||
(QueueKeyStateTable[VK_RCONTROL] & KS_DOWN_BIT)) {
QueueKeyStateTable[VK_CONTROL] |= KS_DOWN_BIT;
} else {
QueueKeyStateTable[VK_CONTROL] &= ~KS_DOWN_MASK;
}
}
if (vk == VK_LMENU || vk == VK_RMENU) {
if ((QueueKeyStateTable[VK_LMENU] & KS_DOWN_BIT) ||
(QueueKeyStateTable[VK_RMENU] & KS_DOWN_BIT)) {
QueueKeyStateTable[VK_MENU] |= KS_DOWN_BIT;
} else {
QueueKeyStateTable[VK_MENU] &= ~KS_DOWN_MASK;
}
}
}
VOID DumpKeyState( PBYTE KeyState ) {
@ -965,7 +974,10 @@ VOID FASTCALL W32kKeyProcessMessage(LPMSG Msg, PKBDTABLES KeyboardLayout) {
ScanCode = (Msg->lParam >> 16) & 0xff;
BaseMapping = Msg->wParam =
IntMapVirtualKeyEx( ScanCode, 1, KeyboardLayout );
RawVk = KeyboardLayout->pusVSCtoVK[ScanCode];
if( ScanCode >= KeyboardLayout->bMaxVSCtoVK )
RawVk = 0;
else
RawVk = KeyboardLayout->pusVSCtoVK[ScanCode];
if ((ModifierBits & NUMLOCK_BIT) &&
!(ModifierBits & GetShiftBit(KeyboardLayout, VK_SHIFT)) &&