sendexev.c revision 0b0d8713 
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 * Request to send an extension event.
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            */
59#include "extnsionst.h" /* EventSwapPtr      */
60#include <X11/extensions/XI.h>
61#include <X11/extensions/XIproto.h>
62#include "exevents.h"
63#include "exglobals.h"
64
65#include "grabdev.h"
66#include "sendexev.h"
67
68extern int lastEvent;	/* Defined in extension.c */
69
70/***********************************************************************
71 *
72 * Handle requests from clients with a different byte order than us.
73 *
74 */
75
76int
77SProcXSendExtensionEvent(ClientPtr client)
78{
79    char n;
80    CARD32 *p;
81    int i;
82    xEvent eventT;
83    xEvent *eventP;
84    EventSwapPtr proc;
85
86    REQUEST(xSendExtensionEventReq);
87    swaps(&stuff->length, n);
88    REQUEST_AT_LEAST_SIZE(xSendExtensionEventReq);
89    swapl(&stuff->destination, n);
90    swaps(&stuff->count, n);
91
92    if (stuff->length != bytes_to_int32(sizeof(xSendExtensionEventReq)) + stuff->count +
93       bytes_to_int32(stuff->num_events * sizeof(xEvent)))
94       return BadLength;
95
96    eventP = (xEvent *) & stuff[1];
97    for (i = 0; i < stuff->num_events; i++, eventP++) {
98	proc = EventSwapVector[eventP->u.u.type & 0177];
99	if (proc == NotImplemented)	/* no swapping proc; invalid event type? */
100	    return BadValue;
101	(*proc) (eventP, &eventT);
102	*eventP = eventT;
103    }
104
105    p = (CARD32 *)(((xEvent *) & stuff[1]) + stuff->num_events);
106    SwapLongs(p, stuff->count);
107    return (ProcXSendExtensionEvent(client));
108}
109
110/***********************************************************************
111 *
112 * Send an event to some client, as if it had come from an extension input
113 * device.
114 *
115 */
116
117int
118ProcXSendExtensionEvent(ClientPtr client)
119{
120    int ret;
121    DeviceIntPtr dev;
122    xEvent *first;
123    XEventClass *list;
124    struct tmask tmp[EMASKSIZE];
125
126    REQUEST(xSendExtensionEventReq);
127    REQUEST_AT_LEAST_SIZE(xSendExtensionEventReq);
128
129    if (stuff->length != bytes_to_int32(sizeof(xSendExtensionEventReq)) + stuff->count +
130	(stuff->num_events * bytes_to_int32(sizeof(xEvent))))
131	return BadLength;
132
133    ret = dixLookupDevice(&dev, stuff->deviceid, client, DixWriteAccess);
134    if (ret != Success)
135	return ret;
136
137    if (stuff->num_events == 0)
138        return ret;
139
140    /* The client's event type must be one defined by an extension. */
141
142    first = ((xEvent *) & stuff[1]);
143    if (!((EXTENSION_EVENT_BASE <= first->u.u.type) &&
144	  (first->u.u.type < lastEvent))) {
145	client->errorValue = first->u.u.type;
146	return BadValue;
147    }
148
149    list = (XEventClass *) (first + stuff->num_events);
150    if ((ret = CreateMaskFromList(client, list, stuff->count, tmp, dev,
151				  X_SendExtensionEvent)) != Success)
152	return ret;
153
154    ret = (SendEvent(client, dev, stuff->destination,
155		     stuff->propagate, (xEvent *) & stuff[1],
156		     tmp[stuff->deviceid].mask, stuff->num_events));
157
158    return ret;
159}
160