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+/* $Xorg: grabdev.c,v 1.4 2001/02/09 02:04:34 xorgcvs Exp $ */
+
+/************************************************************
+
+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 an extension device.
+ *
+ */
+
+
+#define NEED_EVENTS
+#define NEED_REPLIES
+#include "X.h" /* for inputstr.h */
+#include "Xproto.h" /* Request macro */
+#include "inputstr.h" /* DeviceIntPtr */
+#include "windowstr.h" /* window structure */
+#include "XI.h"
+#include "XIproto.h"
+
+extern int IReqCode;
+extern int BadDevice;
+extern int BadClass;
+extern XExtEventInfo EventInfo[];
+extern void (* ReplySwapVector[256]) ();
+DeviceIntPtr LookupDeviceIntRec();
+
+/***********************************************************************
+ *
+ * Swap the request if the requestor has a different byte order than us.
+ *
+ */
+
+int
+SProcXGrabDevice(client)
+ register ClientPtr client;
+ {
+ register char n;
+ register long *p;
+ register int i;
+
+ REQUEST(xGrabDeviceReq);
+ swaps(&stuff->length, n);
+ REQUEST_AT_LEAST_SIZE(xGrabDeviceReq);
+ swapl(&stuff->grabWindow, n);
+ swapl(&stuff->time, n);
+ swaps(&stuff->event_count, n);
+ p = (long *) &stuff[1];
+ for (i=0; i<stuff->event_count; i++)
+ {
+ swapl(p, n);
+ p++;
+ }
+
+ return(ProcXGrabDevice(client));
+ }
+
+/***********************************************************************
+ *
+ * Grab an extension device.
+ *
+ */
+
+int
+ProcXGrabDevice(client)
+ ClientPtr client;
+ {
+ int error;
+ xGrabDeviceReply rep;
+ DeviceIntPtr dev;
+ struct tmask tmp[EMASKSIZE];
+
+ REQUEST(xGrabDeviceReq);
+ REQUEST_AT_LEAST_SIZE(xGrabDeviceReq);
+
+ if (stuff->length !=(sizeof(xGrabDeviceReq)>>2) + stuff->event_count)
+ {
+ SendErrorToClient (client, IReqCode, X_GrabDevice, 0, BadLength);
+ return Success;
+ }
+
+ rep.repType = X_Reply;
+ rep.RepType = X_GrabDevice;
+ rep.sequenceNumber = client->sequence;
+ rep.length = 0;
+
+ dev = LookupDeviceIntRec (stuff->deviceid);
+ if (dev == NULL)
+ {
+ SendErrorToClient(client, IReqCode, X_GrabDevice, 0, BadDevice);
+ return Success;
+ }
+
+ if (CreateMaskFromList (client, (XEventClass *)&stuff[1],
+ stuff->event_count, tmp, dev, X_GrabDevice) != Success)
+ return Success;
+
+ error = GrabDevice (client, dev, stuff->this_device_mode,
+ stuff->other_devices_mode, stuff->grabWindow, stuff->ownerEvents,
+ stuff->time, tmp[stuff->deviceid].mask, &rep.status);
+
+ if (error != Success)
+ {
+ SendErrorToClient(client, IReqCode, X_GrabDevice, 0, error);
+ return Success;
+ }
+ WriteReplyToClient(client, sizeof(xGrabDeviceReply), &rep);
+ return Success;
+ }
+
+
+/***********************************************************************
+ *
+ * This procedure creates an event mask from a list of XEventClasses.
+ *
+ */
+
+int
+CreateMaskFromList (client, list, count, mask, dev, req)
+ ClientPtr client;
+ XEventClass *list;
+ int count;
+ struct tmask mask[];
+ DeviceIntPtr dev;
+ int req;
+ {
+ int i,j;
+ int device;
+ DeviceIntPtr tdev;
+ extern int ExtEventIndex;
+
+ for (i=0; i<EMASKSIZE; i++)
+ {
+ mask[i].mask = 0;
+ mask[i].dev = NULL;
+ }
+
+ for (i=0; i<count; i++, list++)
+ {
+ device = *list >> 8;
+ if (device > 255)
+ {
+ SendErrorToClient(client, IReqCode, req, 0, BadClass);
+ return BadClass;
+ }
+ tdev = LookupDeviceIntRec (device);
+ if (tdev==NULL || (dev != NULL && tdev != dev))
+ {
+ SendErrorToClient(client, IReqCode, req, 0, BadClass);
+ return BadClass;
+ }
+
+ for (j=0; j<ExtEventIndex; j++)
+ if (EventInfo[j].type == (*list & 0xff))
+ {
+ mask[device].mask |= EventInfo[j].mask;
+ mask[device].dev = (Pointer) tdev;
+ break;
+ }
+ }
+ return Success;
+ }
+
+/***********************************************************************
+ *
+ * This procedure writes the reply for the XGrabDevice function,
+ * if the client and server have a different byte ordering.
+ *
+ */
+
+SRepXGrabDevice (client, size, rep)
+ ClientPtr client;
+ int size;
+ xGrabDeviceReply *rep;
+ {
+ register char n;
+
+ swaps(&rep->sequenceNumber, n);
+ swapl(&rep->length, n);
+ WriteToClient(client, size, (char *)rep);
+ }