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+/************************************************************
+
+Copyright 1989, 1998 The Open Group
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation.
+
+The above copyright notice and this permission notice 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
+OPEN GROUP 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.
+
+Except as contained in this notice, the name of The Open Group shall not be
+used in advertising or otherwise to promote the sale, use or other dealings
+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.
+
+HEWLETT-PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
+ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
+HEWLETT-PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
+ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+SOFTWARE.
+
+********************************************************/
+
+/***********************************************************************
+ *
+ * Extension function to grab a button on an extension device.
+ *
+ */
+
+#define NEED_EVENTS
+#define NEED_REPLIES
+#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];
+
+ REQUEST(xGrabDeviceButtonReq);
+ REQUEST_AT_LEAST_SIZE(xGrabDeviceButtonReq);
+
+ if (stuff->length !=
+ (sizeof(xGrabDeviceButtonReq) >> 2) + 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,
+ DixReadAccess);
+ if (ret != Success)
+ return ret;
+ if (mdev->key == NULL)
+ return BadMatch;
+ } else {
+ mdev = inputInfo.keyboard;
+ ret = XaceHook(XACE_DEVICE_ACCESS, client, mdev, DixReadAccess);
+ 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;
+ ret = GrabButton(client, dev, stuff->this_device_mode,
+ stuff->other_devices_mode, stuff->modifiers, mdev,
+ stuff->button, stuff->grabWindow, stuff->ownerEvents,
+ (Cursor) 0, (Window) 0, tmp[stuff->grabbed_device].mask);
+
+ return ret;
+}