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/*
* Copyright © 2009 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 grab or ungrab input device.
*
*/
#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 "exevents.h"
#include "xigrabdev.h"
#include "inpututils.h"
int _X_COLD
SProcXIGrabDevice(ClientPtr client)
{
REQUEST(xXIGrabDeviceReq);
/*
* Check here for at least the length of the struct we swap, then
* let ProcXIGrabDevice check the full size after we swap mask_len.
*/
REQUEST_AT_LEAST_SIZE(xXIGrabDeviceReq);
swaps(&stuff->length);
swaps(&stuff->deviceid);
swapl(&stuff->grab_window);
swapl(&stuff->cursor);
swapl(&stuff->time);
swaps(&stuff->mask_len);
return ProcXIGrabDevice(client);
}
int
ProcXIGrabDevice(ClientPtr client)
{
DeviceIntPtr dev;
xXIGrabDeviceReply rep;
int ret = Success;
uint8_t status;
GrabMask mask = { 0 };
int mask_len;
unsigned int keyboard_mode;
unsigned int pointer_mode;
REQUEST(xXIGrabDeviceReq);
REQUEST_FIXED_SIZE(xXIGrabDeviceReq, ((size_t) stuff->mask_len) * 4);
ret = dixLookupDevice(&dev, stuff->deviceid, client, DixGrabAccess);
if (ret != Success)
return ret;
if (!IsMaster(dev))
stuff->paired_device_mode = GrabModeAsync;
if (IsKeyboardDevice(dev)) {
keyboard_mode = stuff->grab_mode;
pointer_mode = stuff->paired_device_mode;
}
else {
keyboard_mode = stuff->paired_device_mode;
pointer_mode = stuff->grab_mode;
}
if (XICheckInvalidMaskBits(client, (unsigned char *) &stuff[1],
stuff->mask_len * 4) != Success)
return BadValue;
mask.xi2mask = xi2mask_new();
if (!mask.xi2mask)
return BadAlloc;
mask_len = min(xi2mask_mask_size(mask.xi2mask), stuff->mask_len * 4);
/* FIXME: I think the old code was broken here */
xi2mask_set_one_mask(mask.xi2mask, dev->id, (unsigned char *) &stuff[1],
mask_len);
ret = GrabDevice(client, dev, pointer_mode,
keyboard_mode,
stuff->grab_window,
stuff->owner_events,
stuff->time,
&mask, XI2, stuff->cursor, None /* confineTo */ ,
&status);
xi2mask_free(&mask.xi2mask);
if (ret != Success)
return ret;
rep = (xXIGrabDeviceReply) {
.repType = X_Reply,
.RepType = X_XIGrabDevice,
.sequenceNumber = client->sequence,
.length = 0,
.status = status
};
WriteReplyToClient(client, sizeof(rep), &rep);
return ret;
}
int _X_COLD
SProcXIUngrabDevice(ClientPtr client)
{
REQUEST(xXIUngrabDeviceReq);
REQUEST_SIZE_MATCH(xXIUngrabDeviceReq);
swaps(&stuff->length);
swaps(&stuff->deviceid);
swapl(&stuff->time);
return ProcXIUngrabDevice(client);
}
int
ProcXIUngrabDevice(ClientPtr client)
{
DeviceIntPtr dev;
GrabPtr grab;
int ret = Success;
TimeStamp time;
REQUEST(xXIUngrabDeviceReq);
REQUEST_SIZE_MATCH(xXIUngrabDeviceReq);
ret = dixLookupDevice(&dev, stuff->deviceid, client, DixGetAttrAccess);
if (ret != Success)
return ret;
grab = dev->deviceGrab.grab;
time = ClientTimeToServerTime(stuff->time);
if ((CompareTimeStamps(time, currentTime) != LATER) &&
(CompareTimeStamps(time, dev->deviceGrab.grabTime) != EARLIER) &&
(grab) && SameClient(grab, client) && grab->grabtype == XI2)
(*dev->deviceGrab.DeactivateGrab) (dev);
return Success;
}
void _X_COLD
SRepXIGrabDevice(ClientPtr client, int size, xXIGrabDeviceReply * rep)
{
swaps(&rep->sequenceNumber);
swapl(&rep->length);
WriteToClient(client, size, rep);
}
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