1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
|
/*
* Copyright © 2009 Red Hat, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) 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 AUTHORS OR COPYRIGHT HOLDERS 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.
*
* Author: Peter Hutterer
*/
/***********************************************************************
*
* Request to grab or ungrab input device.
*
*/
#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif
#include "inputstr.h" /* DeviceIntPtr */
#include "windowstr.h" /* window structure */
#include <X11/extensions/XI2.h>
#include <X11/extensions/XI2proto.h>
#include "exglobals.h" /* BadDevice */
#include "exevents.h"
#include "xigrabdev.h"
#include "inpututils.h"
int
SProcXIGrabDevice(ClientPtr client)
{
REQUEST(xXIGrabDeviceReq);
/*
* Check here for at least the length of the struct we swap, then
* let ProcXIGrabDevice check the full size after we swap mask_len.
*/
REQUEST_AT_LEAST_SIZE(xXIGrabDeviceReq);
swaps(&stuff->length);
swaps(&stuff->deviceid);
swapl(&stuff->grab_window);
swapl(&stuff->cursor);
swapl(&stuff->time);
swaps(&stuff->mask_len);
return ProcXIGrabDevice(client);
}
int
ProcXIGrabDevice(ClientPtr client)
{
DeviceIntPtr dev;
xXIGrabDeviceReply rep;
int ret = Success;
uint8_t status;
GrabMask mask = { 0 };
int mask_len;
unsigned int keyboard_mode;
unsigned int pointer_mode;
REQUEST(xXIGrabDeviceReq);
REQUEST_FIXED_SIZE(xXIGrabDeviceReq, ((size_t) stuff->mask_len) * 4);
ret = dixLookupDevice(&dev, stuff->deviceid, client, DixGrabAccess);
if (ret != Success)
return ret;
if (!IsMaster(dev))
stuff->paired_device_mode = GrabModeAsync;
if (IsKeyboardDevice(dev)) {
keyboard_mode = stuff->grab_mode;
pointer_mode = stuff->paired_device_mode;
}
else {
keyboard_mode = stuff->paired_device_mode;
pointer_mode = stuff->grab_mode;
}
if (XICheckInvalidMaskBits(client, (unsigned char *) &stuff[1],
stuff->mask_len * 4) != Success)
return BadValue;
mask.xi2mask = xi2mask_new();
if (!mask.xi2mask)
return BadAlloc;
mask_len = min(xi2mask_mask_size(mask.xi2mask), stuff->mask_len * 4);
/* FIXME: I think the old code was broken here */
xi2mask_set_one_mask(mask.xi2mask, dev->id, (unsigned char *) &stuff[1],
mask_len);
ret = GrabDevice(client, dev, pointer_mode,
keyboard_mode,
stuff->grab_window,
stuff->owner_events,
stuff->time,
&mask, XI2, stuff->cursor, None /* confineTo */ ,
&status);
xi2mask_free(&mask.xi2mask);
if (ret != Success)
return ret;
rep = (xXIGrabDeviceReply) {
.repType = X_Reply,
.RepType = X_XIGrabDevice,
.sequenceNumber = client->sequence,
.length = 0,
.status = status
};
WriteReplyToClient(client, sizeof(rep), &rep);
return ret;
}
int
SProcXIUngrabDevice(ClientPtr client)
{
REQUEST(xXIUngrabDeviceReq);
REQUEST_SIZE_MATCH(xXIUngrabDeviceReq);
swaps(&stuff->length);
swaps(&stuff->deviceid);
swapl(&stuff->time);
return ProcXIUngrabDevice(client);
}
int
ProcXIUngrabDevice(ClientPtr client)
{
DeviceIntPtr dev;
GrabPtr grab;
int ret = Success;
TimeStamp time;
REQUEST(xXIUngrabDeviceReq);
REQUEST_SIZE_MATCH(xXIUngrabDeviceReq);
ret = dixLookupDevice(&dev, stuff->deviceid, client, DixGetAttrAccess);
if (ret != Success)
return ret;
grab = dev->deviceGrab.grab;
time = ClientTimeToServerTime(stuff->time);
if ((CompareTimeStamps(time, currentTime) != LATER) &&
(CompareTimeStamps(time, dev->deviceGrab.grabTime) != EARLIER) &&
(grab) && SameClient(grab, client) && grab->grabtype == XI2)
(*dev->deviceGrab.DeactivateGrab) (dev);
return Success;
}
void
SRepXIGrabDevice(ClientPtr client, int size, xXIGrabDeviceReply * rep)
{
swaps(&rep->sequenceNumber);
swapl(&rep->length);
WriteToClient(client, size, rep);
}
|
