xigetclientpointer.c revision f7df2e56 
1/*
2 * Copyright 2007-2008 Peter Hutterer
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
22 *
23 * Author: Peter Hutterer, University of South Australia, NICTA
24 */
25
26#ifdef HAVE_DIX_CONFIG_H
27#include <dix-config.h>
28#endif
29
30#include <X11/X.h>              /* for inputstr.h    */
31#include <X11/Xproto.h>         /* Request macro     */
32#include "inputstr.h"           /* DeviceIntPtr      */
33#include "windowstr.h"          /* window structure  */
34#include "scrnintstr.h"         /* screen structure  */
35#include <X11/extensions/XI.h>
36#include <X11/extensions/XI2proto.h>
37#include "extnsionst.h"
38#include "extinit.h"            /* LookupDeviceIntRec */
39#include "exevents.h"
40#include "exglobals.h"
41
42#include "xigetclientpointer.h"
43
44/***********************************************************************
45 * This procedure allows a client to query another client's client pointer
46 * setting.
47 */
48
49int
50SProcXIGetClientPointer(ClientPtr client)
51{
52    REQUEST(xXIGetClientPointerReq);
53    REQUEST_SIZE_MATCH(xXIGetClientPointerReq);
54
55    swaps(&stuff->length);
56    swapl(&stuff->win);
57    return ProcXIGetClientPointer(client);
58}
59
60int
61ProcXIGetClientPointer(ClientPtr client)
62{
63    int rc;
64    ClientPtr winclient;
65    xXIGetClientPointerReply rep;
66
67    REQUEST(xXIGetClientPointerReq);
68    REQUEST_SIZE_MATCH(xXIGetClientPointerReq);
69
70    if (stuff->win != None) {
71        rc = dixLookupClient(&winclient, stuff->win, client, DixGetAttrAccess);
72
73        if (rc != Success)
74            return BadWindow;
75    }
76    else
77        winclient = client;
78
79    rep = (xXIGetClientPointerReply) {
80        .repType = X_Reply,
81        .RepType = X_XIGetClientPointer,
82        .sequenceNumber = client->sequence,
83        .length = 0,
84        .set = (winclient->clientPtr != NULL),
85        .deviceid = (winclient->clientPtr) ? winclient->clientPtr->id : 0
86    };
87
88    WriteReplyToClient(client, sizeof(xXIGetClientPointerReply), &rep);
89    return Success;
90}
91
92/***********************************************************************
93 *
94 * This procedure writes the reply for the XGetClientPointer function,
95 * if the client and server have a different byte ordering.
96 *
97 */
98
99void
100SRepXIGetClientPointer(ClientPtr client, int size,
101                       xXIGetClientPointerReply * rep)
102{
103    swaps(&rep->sequenceNumber);
104    swapl(&rep->length);
105    swaps(&rep->deviceid);
106    WriteToClient(client, size, rep);
107}
108