grabdevb.c revision 35c4bbdf 
1/************************************************************
2
3Copyright 1989, 1998  The Open Group
4
5Permission to use, copy, modify, distribute, and sell this software and its
6documentation for any purpose is hereby granted without fee, provided that
7the above copyright notice appear in all copies and that both that
8copyright notice and this permission notice appear in supporting
9documentation.
10
11The above copyright notice and this permission notice shall be included in
12all copies or substantial portions of the Software.
13
14THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
17OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
18AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
19CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
20
21Except as contained in this notice, the name of The Open Group shall not be
22used in advertising or otherwise to promote the sale, use or other dealings
23in this Software without prior written authorization from The Open Group.
24
25Copyright 1989 by Hewlett-Packard Company, Palo Alto, California.
26
27			All Rights Reserved
28
29Permission to use, copy, modify, and distribute this software and its
30documentation for any purpose and without fee is hereby granted,
31provided that the above copyright notice appear in all copies and that
32both that copyright notice and this permission notice appear in
33supporting documentation, and that the name of Hewlett-Packard not be
34used in advertising or publicity pertaining to distribution of the
35software without specific, written prior permission.
36
37HEWLETT-PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
38ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
39HEWLETT-PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
40ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
41WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
42ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
43SOFTWARE.
44
45********************************************************/
46
47/***********************************************************************
48 *
49 * Extension function to grab a button on an extension device.
50 *
51 */
52
53#ifdef HAVE_DIX_CONFIG_H
54#include <dix-config.h>
55#endif
56
57#include "inputstr.h"           /* DeviceIntPtr      */
58#include "windowstr.h"          /* window structure  */
59#include <X11/extensions/XI.h>
60#include <X11/extensions/XIproto.h>
61#include "exevents.h"
62#include "exglobals.h"
63#include "xace.h"
64
65#include "grabdev.h"
66#include "grabdevb.h"
67
68/***********************************************************************
69 *
70 * Handle requests from clients with a different byte order.
71 *
72 */
73
74int
75SProcXGrabDeviceButton(ClientPtr client)
76{
77    REQUEST(xGrabDeviceButtonReq);
78    swaps(&stuff->length);
79    REQUEST_AT_LEAST_SIZE(xGrabDeviceButtonReq);
80    swapl(&stuff->grabWindow);
81    swaps(&stuff->modifiers);
82    swaps(&stuff->event_count);
83    REQUEST_FIXED_SIZE(xGrabDeviceButtonReq,
84                       stuff->event_count * sizeof(CARD32));
85    SwapLongs((CARD32 *) (&stuff[1]), stuff->event_count);
86
87    return (ProcXGrabDeviceButton(client));
88}
89
90/***********************************************************************
91 *
92 * Grab a button on an extension device.
93 *
94 */
95
96int
97ProcXGrabDeviceButton(ClientPtr client)
98{
99    int ret;
100    DeviceIntPtr dev;
101    DeviceIntPtr mdev;
102    XEventClass *class;
103    struct tmask tmp[EMASKSIZE];
104    GrabParameters param;
105    GrabMask mask;
106
107    REQUEST(xGrabDeviceButtonReq);
108    REQUEST_AT_LEAST_SIZE(xGrabDeviceButtonReq);
109
110    if (stuff->length !=
111        bytes_to_int32(sizeof(xGrabDeviceButtonReq)) + stuff->event_count)
112        return BadLength;
113
114    ret = dixLookupDevice(&dev, stuff->grabbed_device, client, DixGrabAccess);
115    if (ret != Success)
116        return ret;
117
118    if (stuff->modifier_device != UseXKeyboard) {
119        ret = dixLookupDevice(&mdev, stuff->modifier_device, client,
120                              DixUseAccess);
121        if (ret != Success)
122            return ret;
123        if (mdev->key == NULL)
124            return BadMatch;
125    }
126    else {
127        mdev = PickKeyboard(client);
128        ret = XaceHook(XACE_DEVICE_ACCESS, client, mdev, DixUseAccess);
129        if (ret != Success)
130            return ret;
131    }
132
133    class = (XEventClass *) (&stuff[1]);        /* first word of values */
134
135    if ((ret = CreateMaskFromList(client, class,
136                                  stuff->event_count, tmp, dev,
137                                  X_GrabDeviceButton)) != Success)
138        return ret;
139
140    param = (GrabParameters) {
141        .grabtype = XI,
142        .ownerEvents = stuff->ownerEvents,
143        .this_device_mode = stuff->this_device_mode,
144        .other_devices_mode = stuff->other_devices_mode,
145        .grabWindow = stuff->grabWindow,
146        .modifiers = stuff->modifiers
147    };
148    mask.xi = tmp[stuff->grabbed_device].mask;
149
150    ret = GrabButton(client, dev, mdev, stuff->button, &param, XI, &mask);
151
152    return ret;
153}
154