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xserver/Xi/xipassivegrab.c

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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 "swaprep.h"
#include "exglobals.h" /* BadDevice */
#include "exevents.h"
#include "xipassivegrab.h"
#include "dixgrabs.h"
int
SProcXIPassiveGrabDevice(ClientPtr client)
{
int i;
char n;
xXIModifierInfo *mods;
REQUEST(xXIPassiveGrabDeviceReq);
swaps(&stuff->length, n);
swaps(&stuff->deviceid, n);
swapl(&stuff->grab_window, n);
swapl(&stuff->cursor, n);
swapl(&stuff->time, n);
swapl(&stuff->detail, n);
swaps(&stuff->mask_len, n);
swaps(&stuff->num_modifiers, n);
mods = (xXIModifierInfo*)&stuff[1];
for (i = 0; i < stuff->num_modifiers; i++, mods++)
{
swapl(&mods->base_mods, n);
swapl(&mods->latched_mods, n);
swapl(&mods->locked_mods, n);
}
return ProcXIPassiveGrabDevice(client);
}
int
ProcXIPassiveGrabDevice(ClientPtr client)
{
DeviceIntPtr dev, mod_dev;
xXIPassiveGrabDeviceReply rep;
int i, ret = Success;
uint8_t status;
uint32_t *modifiers;
xXIGrabModifierInfo *modifiers_failed;
GrabMask mask;
GrabParameters param;
void *tmp;
REQUEST(xXIPassiveGrabDeviceReq);
REQUEST_AT_LEAST_SIZE(xXIPassiveGrabDeviceReq);
if (stuff->deviceid == XIAllDevices)
dev = inputInfo.all_devices;
else if (stuff->deviceid == XIAllMasterDevices)
dev = inputInfo.all_master_devices;
else
{
ret = dixLookupDevice(&dev, stuff->deviceid, client, DixGrabAccess);
if (ret != Success)
return ret;
}
if (stuff->grab_type != XIGrabtypeButton &&
stuff->grab_type != XIGrabtypeKeysym &&
stuff->grab_type != XIGrabtypeEnter &&
stuff->grab_type != XIGrabtypeFocusIn)
{
client->errorValue = stuff->grab_type;
return BadValue;
}
if ((stuff->grab_type == XIGrabtypeEnter ||
stuff->grab_type == XIGrabtypeFocusIn) && stuff->detail != 0)
{
client->errorValue = stuff->detail;
return BadValue;
}
if ((stuff->mask_len * 4) > XI2LASTEVENT)
{
unsigned char *bits = (unsigned char*)&stuff[1];
for (i = XI2LASTEVENT; i < stuff->mask_len * 4; i++)
{
if (BitIsOn(bits, i))
return BadValue;
}
}
memset(mask.xi2mask, 0, sizeof(mask.xi2mask));
memcpy(mask.xi2mask[stuff->deviceid], &stuff[1], stuff->mask_len * 4);
rep.repType = X_Reply;
rep.RepType = X_XIPassiveGrabDevice;
rep.length = 0;
rep.sequenceNumber = client->sequence;
rep.num_modifiers = 0;
memset(&param, 0, sizeof(param));
param.grabtype = GRABTYPE_XI2;
param.ownerEvents = stuff->owner_events;
param.this_device_mode = stuff->grab_mode;
param.other_devices_mode = stuff->paired_device_mode;
param.grabWindow = stuff->grab_window;
param.cursor = stuff->cursor;
if (stuff->cursor != None)
{
status = dixLookupResourceByType(&tmp, stuff->cursor,
RT_CURSOR, client, DixUseAccess);
if (status != Success)
{
client->errorValue = stuff->cursor;
return (status == BadValue) ? BadCursor : status;
}
}
status = dixLookupWindow((WindowPtr*)&tmp, stuff->grab_window, client, DixSetAttrAccess);
if (status != Success)
return status;
status = CheckGrabValues(client, &param);
modifiers = (uint32_t*)&stuff[1] + stuff->mask_len;
modifiers_failed = xcalloc(stuff->num_modifiers, sizeof(xXIGrabModifierInfo));
if (!modifiers_failed)
return BadAlloc;
if (!IsMaster(dev) && dev->u.master)
mod_dev = GetMaster(dev, MASTER_KEYBOARD);
else
mod_dev = dev;
for (i = 0; i < stuff->num_modifiers; i++, modifiers++)
{
param.modifiers = *modifiers;
switch(stuff->grab_type)
{
case XIGrabtypeButton:
status = GrabButton(client, dev, mod_dev, stuff->detail,
&param, GRABTYPE_XI2, &mask);
break;
case XIGrabtypeKeysym:
status = GrabKey(client, dev, mod_dev, stuff->detail,
&param, GRABTYPE_XI2, &mask);
break;
case XIGrabtypeEnter:
case XIGrabtypeFocusIn:
status = GrabWindow(client, dev, stuff->grab_type,
&param, &mask);
break;
}
if (status != GrabSuccess)
{
xXIGrabModifierInfo *info = modifiers_failed + rep.num_modifiers;
info->status = status;
info->modifiers = *modifiers;
rep.num_modifiers++;
rep.length++;
}
}
WriteReplyToClient(client, sizeof(rep), &rep);
if (rep.num_modifiers)
{
client->pSwapReplyFunc = (ReplySwapPtr) Swap32Write;
WriteSwappedDataToClient(client, rep.num_modifiers * 4, (char*)modifiers_failed);
}
xfree(modifiers_failed);
return ret;
}
void
SRepXIPassiveGrabDevice(ClientPtr client, int size,
xXIPassiveGrabDeviceReply * rep)
{
char n;
swaps(&rep->sequenceNumber, n);
swapl(&rep->length, n);
swaps(&rep->num_modifiers, n);
WriteToClient(client, size, (char *)rep);
}
int
SProcXIPassiveUngrabDevice(ClientPtr client)
{
char n;
int i;
uint32_t *modifiers;
REQUEST(xXIPassiveUngrabDeviceReq);
swaps(&stuff->length, n);
swapl(&stuff->grab_window, n);
swaps(&stuff->deviceid, n);
swapl(&stuff->detail, n);
swaps(&stuff->num_modifiers, n);
modifiers = (uint32_t*)&stuff[1];
for (i = 0; i < stuff->num_modifiers; i++, modifiers++)
swapl(modifiers, n);
return ProcXIPassiveUngrabDevice(client);
}
int
ProcXIPassiveUngrabDevice(ClientPtr client)
{
DeviceIntPtr dev, mod_dev;
WindowPtr win;
GrabRec tempGrab;
uint32_t* modifiers;
int i, rc;
REQUEST(xXIPassiveUngrabDeviceReq);
REQUEST_AT_LEAST_SIZE(xXIPassiveUngrabDeviceReq);
rc = dixLookupDevice(&dev, stuff->deviceid, client, DixGrabAccess);
if (rc != Success)
return rc;
if (stuff->grab_type != XIGrabtypeButton &&
stuff->grab_type != XIGrabtypeKeysym &&
stuff->grab_type != XIGrabtypeEnter &&
stuff->grab_type != XIGrabtypeFocusIn)
{
client->errorValue = stuff->grab_type;
return BadValue;
}
if ((stuff->grab_type == XIGrabtypeEnter ||
stuff->grab_type == XIGrabtypeFocusIn) && stuff->detail != 0)
{
client->errorValue = stuff->detail;
return BadValue;
}
rc = dixLookupWindow(&win, stuff->grab_window, client, DixSetAttrAccess);
if (rc != Success)
return rc;
if (!IsMaster(dev) && dev->u.master)
mod_dev = GetMaster(dev, MASTER_KEYBOARD);
else
mod_dev = dev;
tempGrab.resource = client->clientAsMask;
tempGrab.device = dev;
tempGrab.window = win;
switch(stuff->grab_type)
{
case XIGrabtypeButton: tempGrab.type = XI_ButtonPress; break;
case XIGrabtypeKeysym: tempGrab.type = XI_KeyPress; break;
case XIGrabtypeEnter: tempGrab.type = XI_Enter; break;
case XIGrabtypeFocusIn: tempGrab.type = XI_FocusIn; break;
}
tempGrab.grabtype = GRABTYPE_XI2;
tempGrab.modifierDevice = mod_dev;
tempGrab.modifiersDetail.pMask = NULL;
tempGrab.detail.exact = stuff->detail;
tempGrab.detail.pMask = NULL;
modifiers = (uint32_t*)&stuff[1];
for (i = 0; i < stuff->num_modifiers; i++, modifiers++)
{
tempGrab.modifiersDetail.exact = *modifiers;
DeletePassiveGrabFromList(&tempGrab);
}
return Success;
}
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