sendexev.c revision 05b261ec 
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#define EXTENSION_EVENT_BASE  64
54#define	 NEED_EVENTS
55#define	 NEED_REPLIES
56#ifdef HAVE_DIX_CONFIG_H
57#include <dix-config.h>
58#endif
59
60#include <X11/X.h>	/* for inputstr.h    */
61#include <X11/Xproto.h>	/* Request macro     */
62#include "inputstr.h"	/* DeviceIntPtr      */
63#include "windowstr.h"	/* Window            */
64#include <X11/extensions/XI.h>
65#include <X11/extensions/XIproto.h>
66#include "extnsionst.h"
67#include "extinit.h"	/* LookupDeviceIntRec */
68#include "exevents.h"
69#include "exglobals.h"
70
71#include "grabdev.h"
72#include "sendexev.h"
73
74extern int lastEvent;	/* Defined in extension.c */
75
76/***********************************************************************
77 *
78 * Handle requests from clients with a different byte order than us.
79 *
80 */
81
82int
83SProcXSendExtensionEvent(ClientPtr client)
84{
85    char n;
86    CARD32 *p;
87    int i;
88    xEvent eventT;
89    xEvent *eventP;
90    EventSwapPtr proc;
91
92    REQUEST(xSendExtensionEventReq);
93    swaps(&stuff->length, n);
94    REQUEST_AT_LEAST_SIZE(xSendExtensionEventReq);
95    swapl(&stuff->destination, n);
96    swaps(&stuff->count, n);
97
98    if (stuff->length != (sizeof(xSendExtensionEventReq) >> 2) + stuff->count +
99       (stuff->num_events * (sizeof(xEvent) >> 2)))
100       return BadLength;
101
102    eventP = (xEvent *) & stuff[1];
103    for (i = 0; i < stuff->num_events; i++, eventP++) {
104	proc = EventSwapVector[eventP->u.u.type & 0177];
105	if (proc == NotImplemented)	/* no swapping proc; invalid event type? */
106	    return (BadValue);
107	(*proc) (eventP, &eventT);
108	*eventP = eventT;
109    }
110
111    p = (CARD32 *)(((xEvent *) & stuff[1]) + stuff->num_events);
112    SwapLongs(p, stuff->count);
113    return (ProcXSendExtensionEvent(client));
114}
115
116/***********************************************************************
117 *
118 * Send an event to some client, as if it had come from an extension input
119 * device.
120 *
121 */
122
123int
124ProcXSendExtensionEvent(ClientPtr client)
125{
126    int ret;
127    DeviceIntPtr dev;
128    xEvent *first;
129    XEventClass *list;
130    struct tmask tmp[EMASKSIZE];
131
132    REQUEST(xSendExtensionEventReq);
133    REQUEST_AT_LEAST_SIZE(xSendExtensionEventReq);
134
135    if (stuff->length != (sizeof(xSendExtensionEventReq) >> 2) + stuff->count +
136	(stuff->num_events * (sizeof(xEvent) >> 2))) {
137	SendErrorToClient(client, IReqCode, X_SendExtensionEvent, 0, BadLength);
138	return Success;
139    }
140
141    dev = LookupDeviceIntRec(stuff->deviceid);
142    if (dev == NULL) {
143	SendErrorToClient(client, IReqCode, X_SendExtensionEvent, 0, BadDevice);
144	return Success;
145    }
146
147    /* The client's event type must be one defined by an extension. */
148
149    first = ((xEvent *) & stuff[1]);
150    if (!((EXTENSION_EVENT_BASE <= first->u.u.type) &&
151	  (first->u.u.type < lastEvent))) {
152	client->errorValue = first->u.u.type;
153	SendErrorToClient(client, IReqCode, X_SendExtensionEvent, 0, BadValue);
154	return Success;
155    }
156
157    list = (XEventClass *) (first + stuff->num_events);
158    if ((ret = CreateMaskFromList(client, list, stuff->count, tmp, dev,
159				  X_SendExtensionEvent)) != Success)
160	return Success;
161
162    ret = (SendEvent(client, dev, stuff->destination,
163		     stuff->propagate, (xEvent *) & stuff[1],
164		     tmp[stuff->deviceid].mask, stuff->num_events));
165
166    if (ret != Success)
167	SendErrorToClient(client, IReqCode, X_SendExtensionEvent, 0, ret);
168
169    return Success;
170}
171