xenocara/xserver/Xi/xisetdevfocus.c
matthieu 797ed93386 Protocol handling issues in X Window System servers
One year after Ilja van Sprundel, discovered and reported a large number
of issues in the way the X server code base handles requests from X clients,
they have been fixed.
2014-12-09 17:58:52 +00:00

132 lines
3.5 KiB
C

/*
* Copyright 2008 Red Hat, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* Author: Peter Hutterer
*/
/***********************************************************************
*
* Request to set and get an input device's focus.
*
*/
#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif
#include "inputstr.h" /* DeviceIntPtr */
#include "windowstr.h" /* window structure */
#include <X11/extensions/XI2.h>
#include <X11/extensions/XI2proto.h>
#include "exglobals.h" /* BadDevice */
#include "xisetdevfocus.h"
int
SProcXISetFocus(ClientPtr client)
{
REQUEST(xXISetFocusReq);
REQUEST_AT_LEAST_SIZE(xXISetFocusReq);
swaps(&stuff->length);
swaps(&stuff->deviceid);
swapl(&stuff->focus);
swapl(&stuff->time);
return ProcXISetFocus(client);
}
int
SProcXIGetFocus(ClientPtr client)
{
REQUEST(xXIGetFocusReq);
REQUEST_AT_LEAST_SIZE(xXIGetFocusReq);
swaps(&stuff->length);
swaps(&stuff->deviceid);
return ProcXIGetFocus(client);
}
int
ProcXISetFocus(ClientPtr client)
{
DeviceIntPtr dev;
int ret;
REQUEST(xXISetFocusReq);
REQUEST_AT_LEAST_SIZE(xXISetFocusReq);
ret = dixLookupDevice(&dev, stuff->deviceid, client, DixSetFocusAccess);
if (ret != Success)
return ret;
if (!dev->focus)
return BadDevice;
return SetInputFocus(client, dev, stuff->focus, RevertToParent,
stuff->time, TRUE);
}
int
ProcXIGetFocus(ClientPtr client)
{
xXIGetFocusReply rep;
DeviceIntPtr dev;
int ret;
REQUEST(xXIGetFocusReq);
REQUEST_AT_LEAST_SIZE(xXIGetFocusReq);
ret = dixLookupDevice(&dev, stuff->deviceid, client, DixGetFocusAccess);
if (ret != Success)
return ret;
if (!dev->focus)
return BadDevice;
rep = (xXIGetFocusReply) {
.repType = X_Reply,
.RepType = X_XIGetFocus,
.sequenceNumber = client->sequence,
.length = 0
};
if (dev->focus->win == NoneWin)
rep.focus = None;
else if (dev->focus->win == PointerRootWin)
rep.focus = PointerRoot;
else if (dev->focus->win == FollowKeyboardWin)
rep.focus = FollowKeyboard;
else
rep.focus = dev->focus->win->drawable.id;
WriteReplyToClient(client, sizeof(xXIGetFocusReply), &rep);
return Success;
}
void
SRepXIGetFocus(ClientPtr client, int len, xXIGetFocusReply * rep)
{
swaps(&rep->sequenceNumber);
swapl(&rep->length);
swapl(&rep->focus);
WriteToClient(client, len, rep);
}