xref: /xsrc/external/mit/xorg-server/dist/Xi/grabdevb.c

/************************************************************

Copyright 1989, 1998  The Open Group

Permission to use, copy, modify, distribute, and sell this software and its
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in this Software without prior written authorization from The Open Group.

Copyright 1989 by Hewlett-Packard Company, Palo Alto, California.

			All Rights Reserved

Permission to use, copy, modify, and distribute this software and its
documentation for any purpose and without fee is hereby granted,
provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in
supporting documentation, and that the name of Hewlett-Packard not be
used in advertising or publicity pertaining to distribution of the
software without specific, written prior permission.

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WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
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********************************************************/

/***********************************************************************
 *
 * Extension function to grab a button on an extension device.
 *
 */

#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif

#include "inputstr.h"	/* DeviceIntPtr      */
#include "windowstr.h"	/* window structure  */
#include <X11/extensions/XI.h>
#include <X11/extensions/XIproto.h>
#include "exevents.h"
#include "exglobals.h"
#include "xace.h"

#include "grabdev.h"
#include "grabdevb.h"

/***********************************************************************
 *
 * Handle requests from clients with a different byte order.
 *
 */

int
SProcXGrabDeviceButton(ClientPtr client)
{
    char n;

    REQUEST(xGrabDeviceButtonReq);
    swaps(&stuff->length, n);
    REQUEST_AT_LEAST_SIZE(xGrabDeviceButtonReq);
    swapl(&stuff->grabWindow, n);
    swaps(&stuff->modifiers, n);
    swaps(&stuff->event_count, n);
    REQUEST_FIXED_SIZE(xGrabDeviceButtonReq,
                      stuff->event_count * sizeof(CARD32));
    SwapLongs((CARD32 *) (&stuff[1]), stuff->event_count);

    return (ProcXGrabDeviceButton(client));
}

/***********************************************************************
 *
 * Grab a button on an extension device.
 *
 */

int
ProcXGrabDeviceButton(ClientPtr client)
{
    int ret;
    DeviceIntPtr dev;
    DeviceIntPtr mdev;
    XEventClass *class;
    struct tmask tmp[EMASKSIZE];
    GrabParameters param;
    GrabMask mask;

    REQUEST(xGrabDeviceButtonReq);
    REQUEST_AT_LEAST_SIZE(xGrabDeviceButtonReq);

    if (stuff->length !=
	bytes_to_int32(sizeof(xGrabDeviceButtonReq)) + stuff->event_count)
	return BadLength;

    ret = dixLookupDevice(&dev, stuff->grabbed_device, client, DixGrabAccess);
    if (ret != Success)
	return ret;

    if (stuff->modifier_device != UseXKeyboard) {
	ret = dixLookupDevice(&mdev, stuff->modifier_device, client,
			      DixUseAccess);
	if (ret != Success)
	    return ret;
	if (mdev->key == NULL)
	    return BadMatch;
    } else {
	mdev = PickKeyboard(client);
	ret = XaceHook(XACE_DEVICE_ACCESS, client, mdev, DixUseAccess);
	if (ret != Success)
	    return ret;
    }

    class = (XEventClass *) (&stuff[1]);	/* first word of values */

    if ((ret = CreateMaskFromList(client, class,
				  stuff->event_count, tmp, dev,
				  X_GrabDeviceButton)) != Success)
	return ret;

    memset(&param, 0, sizeof(param));
    param.grabtype = GRABTYPE_XI;
    param.ownerEvents = stuff->ownerEvents;
    param.this_device_mode = stuff->this_device_mode;
    param.other_devices_mode = stuff->other_devices_mode;
    param.grabWindow = stuff->grabWindow;
    param.modifiers = stuff->modifiers;
    mask.xi = tmp[stuff->grabbed_device].mask;

    ret = GrabButton(client, dev, mdev, stuff->button, &param,
                     GRABTYPE_XI, &mask);

    return ret;
}