219 lines
6.8 KiB
C
219 lines
6.8 KiB
C
/************************************************************
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Copyright 1989, 1998 The Open Group
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Permission to use, copy, modify, distribute, and sell this software and its
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documentation for any purpose is hereby granted without fee, provided that
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the above copyright notice appear in all copies and that both that
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copyright notice and this permission notice appear in supporting
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documentation.
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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Except as contained in this notice, the name of The Open Group shall not be
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used in advertising or otherwise to promote the sale, use or other dealings
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in this Software without prior written authorization from The Open Group.
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Copyright 1989 by Hewlett-Packard Company, Palo Alto, California.
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All Rights Reserved
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Permission to use, copy, modify, and distribute this software and its
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documentation for any purpose and without fee is hereby granted,
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provided that the above copyright notice appear in all copies and that
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both that copyright notice and this permission notice appear in
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supporting documentation, and that the name of Hewlett-Packard not be
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used in advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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HEWLETT-PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
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ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
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HEWLETT-PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
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ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
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ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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SOFTWARE.
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********************************************************/
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/***********************************************************************
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*
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* Extension function to grab an extension device.
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*
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*/
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#ifdef HAVE_DIX_CONFIG_H
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#include <dix-config.h>
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#endif
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#include "inputstr.h" /* DeviceIntPtr */
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#include "windowstr.h" /* window structure */
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#include <X11/extensions/XI.h>
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#include <X11/extensions/XIproto.h>
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#include "exglobals.h"
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#include "dixevents.h" /* GrabDevice */
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#include "grabdev.h"
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extern XExtEventInfo EventInfo[];
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extern int ExtEventIndex;
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/***********************************************************************
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*
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* Swap the request if the requestor has a different byte order than us.
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*
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*/
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int
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SProcXGrabDevice(ClientPtr client)
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{
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char n;
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REQUEST(xGrabDeviceReq);
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swaps(&stuff->length, n);
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REQUEST_AT_LEAST_SIZE(xGrabDeviceReq);
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swapl(&stuff->grabWindow, n);
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swapl(&stuff->time, n);
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swaps(&stuff->event_count, n);
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if (stuff->length != bytes_to_int32(sizeof(xGrabDeviceReq)) + stuff->event_count)
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return BadLength;
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SwapLongs((CARD32 *) (&stuff[1]), stuff->event_count);
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return (ProcXGrabDevice(client));
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}
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/***********************************************************************
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*
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* Grab an extension device.
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*
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*/
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int
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ProcXGrabDevice(ClientPtr client)
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{
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int rc;
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xGrabDeviceReply rep;
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DeviceIntPtr dev;
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GrabMask mask;
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struct tmask tmp[EMASKSIZE];
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REQUEST(xGrabDeviceReq);
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REQUEST_AT_LEAST_SIZE(xGrabDeviceReq);
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if (stuff->length != bytes_to_int32(sizeof(xGrabDeviceReq)) + stuff->event_count)
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return BadLength;
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rep.repType = X_Reply;
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rep.RepType = X_GrabDevice;
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rep.sequenceNumber = client->sequence;
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rep.length = 0;
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rc = dixLookupDevice(&dev, stuff->deviceid, client, DixGrabAccess);
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if (rc != Success)
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return rc;
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if ((rc = CreateMaskFromList(client, (XEventClass *) & stuff[1],
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stuff->event_count, tmp, dev,
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X_GrabDevice)) != Success)
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return rc;
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mask.xi = tmp[stuff->deviceid].mask;
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rc = GrabDevice(client, dev, stuff->other_devices_mode,
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stuff->this_device_mode, stuff->grabWindow,
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stuff->ownerEvents, stuff->time,
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&mask, GRABTYPE_XI, None, None,
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&rep.status);
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if (rc != Success)
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return rc;
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WriteReplyToClient(client, sizeof(xGrabDeviceReply), &rep);
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return Success;
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}
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/***********************************************************************
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*
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* This procedure creates an event mask from a list of XEventClasses.
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*
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* Procedure is as follows:
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* An XEventClass is (deviceid << 8 | eventtype). For each entry in the list,
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* get the device. Then run through all available event indices (those are
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* set when XI starts up) and binary OR's the device's mask to whatever the
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* event mask for the given event type was.
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* If an error occurs, it is sent to the client. Errors are generated if
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* - if the device given in the event classs is invalid
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* - if the device in the class list is not the device given as parameter (no
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* error if parameter is NULL)
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*
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* mask has to be size EMASKSIZE and pre-allocated.
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*
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* @param client The client to send the error to (if one occurs)
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* @param list List of event classes as sent from the client.
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* @param count Number of elements in list.
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* @param mask Preallocated mask (size EMASKSIZE).
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* @param dev The device we're creating masks for.
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* @param req The request we're processing. Used to fill in error fields.
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*/
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int
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CreateMaskFromList(ClientPtr client, XEventClass * list, int count,
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struct tmask *mask, DeviceIntPtr dev, int req)
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{
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int rc, i, j;
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int device;
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DeviceIntPtr tdev;
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for (i = 0; i < EMASKSIZE; i++) {
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mask[i].mask = 0;
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mask[i].dev = NULL;
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}
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for (i = 0; i < count; i++, list++) {
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device = *list >> 8;
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if (device > 255) /* FIXME: we only use 7 bit for devices? */
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return BadClass;
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rc = dixLookupDevice(&tdev, device, client, DixUseAccess);
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if (rc != BadDevice && rc != Success)
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return rc;
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if (rc == BadDevice || (dev != NULL && tdev != dev))
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return BadClass;
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for (j = 0; j < ExtEventIndex; j++)
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if (EventInfo[j].type == (*list & 0xff)) {
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mask[device].mask |= EventInfo[j].mask;
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mask[device].dev = (Pointer) tdev;
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break;
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}
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}
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return Success;
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}
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/***********************************************************************
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*
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* This procedure writes the reply for the XGrabDevice function,
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* if the client and server have a different byte ordering.
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*
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*/
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void
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SRepXGrabDevice(ClientPtr client, int size, xGrabDeviceReply * rep)
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{
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char n;
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swaps(&rep->sequenceNumber, n);
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swapl(&rep->length, n);
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WriteToClient(client, size, (char *)rep);
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}
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