xfixes.c revision 7e31ba66 
1/*
2 * Copyright (c) 2006, Oracle and/or its affiliates. All rights reserved.
3 * Copyright 2010 Red Hat, Inc.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
14 * Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
23 *
24 * Copyright © 2002 Keith Packard
25 *
26 * Permission to use, copy, modify, distribute, and sell this software and its
27 * documentation for any purpose is hereby granted without fee, provided that
28 * the above copyright notice appear in all copies and that both that
29 * copyright notice and this permission notice appear in supporting
30 * documentation, and that the name of Keith Packard not be used in
31 * advertising or publicity pertaining to distribution of the software without
32 * specific, written prior permission.  Keith Packard makes no
33 * representations about the suitability of this software for any purpose.  It
34 * is provided "as is" without express or implied warranty.
35 *
36 * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
37 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
38 * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
39 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
40 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
41 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
42 * PERFORMANCE OF THIS SOFTWARE.
43 */
44
45#ifdef HAVE_DIX_CONFIG_H
46#include <dix-config.h>
47#endif
48
49#include "xfixesint.h"
50#include "protocol-versions.h"
51#include "extinit.h"
52
53static unsigned char XFixesReqCode;
54int XFixesEventBase;
55int XFixesErrorBase;
56
57static DevPrivateKeyRec XFixesClientPrivateKeyRec;
58
59#define XFixesClientPrivateKey (&XFixesClientPrivateKeyRec)
60
61static int
62ProcXFixesQueryVersion(ClientPtr client)
63{
64    XFixesClientPtr pXFixesClient = GetXFixesClient(client);
65    xXFixesQueryVersionReply rep = {
66        .type = X_Reply,
67        .sequenceNumber = client->sequence,
68        .length = 0
69    };
70
71    REQUEST(xXFixesQueryVersionReq);
72
73    REQUEST_SIZE_MATCH(xXFixesQueryVersionReq);
74
75    if (version_compare(stuff->majorVersion, stuff->minorVersion,
76                        SERVER_XFIXES_MAJOR_VERSION,
77                        SERVER_XFIXES_MINOR_VERSION) < 0) {
78        rep.majorVersion = stuff->majorVersion;
79        rep.minorVersion = stuff->minorVersion;
80    }
81    else {
82        rep.majorVersion = SERVER_XFIXES_MAJOR_VERSION;
83        rep.minorVersion = SERVER_XFIXES_MINOR_VERSION;
84    }
85
86    pXFixesClient->major_version = rep.majorVersion;
87    pXFixesClient->minor_version = rep.minorVersion;
88    if (client->swapped) {
89        swaps(&rep.sequenceNumber);
90        swapl(&rep.length);
91        swapl(&rep.majorVersion);
92        swapl(&rep.minorVersion);
93    }
94    WriteToClient(client, sizeof(xXFixesQueryVersionReply), &rep);
95    return Success;
96}
97
98/* Major version controls available requests */
99static const int version_requests[] = {
100    X_XFixesQueryVersion,       /* before client sends QueryVersion */
101    X_XFixesGetCursorImage,     /* Version 1 */
102    X_XFixesChangeCursorByName, /* Version 2 */
103    X_XFixesExpandRegion,       /* Version 3 */
104    X_XFixesShowCursor,         /* Version 4 */
105    X_XFixesDestroyPointerBarrier,      /* Version 5 */
106};
107
108int (*ProcXFixesVector[XFixesNumberRequests]) (ClientPtr) = {
109/*************** Version 1 ******************/
110    ProcXFixesQueryVersion,
111        ProcXFixesChangeSaveSet,
112        ProcXFixesSelectSelectionInput,
113        ProcXFixesSelectCursorInput, ProcXFixesGetCursorImage,
114/*************** Version 2 ******************/
115        ProcXFixesCreateRegion,
116        ProcXFixesCreateRegionFromBitmap,
117        ProcXFixesCreateRegionFromWindow,
118        ProcXFixesCreateRegionFromGC,
119        ProcXFixesCreateRegionFromPicture,
120        ProcXFixesDestroyRegion,
121        ProcXFixesSetRegion,
122        ProcXFixesCopyRegion,
123        ProcXFixesCombineRegion,
124        ProcXFixesCombineRegion,
125        ProcXFixesCombineRegion,
126        ProcXFixesInvertRegion,
127        ProcXFixesTranslateRegion,
128        ProcXFixesRegionExtents,
129        ProcXFixesFetchRegion,
130        ProcXFixesSetGCClipRegion,
131        ProcXFixesSetWindowShapeRegion,
132        ProcXFixesSetPictureClipRegion,
133        ProcXFixesSetCursorName,
134        ProcXFixesGetCursorName,
135        ProcXFixesGetCursorImageAndName,
136        ProcXFixesChangeCursor, ProcXFixesChangeCursorByName,
137/*************** Version 3 ******************/
138        ProcXFixesExpandRegion,
139/*************** Version 4 ****************/
140        ProcXFixesHideCursor, ProcXFixesShowCursor,
141/*************** Version 5 ****************/
142ProcXFixesCreatePointerBarrier, ProcXFixesDestroyPointerBarrier,};
143
144static int
145ProcXFixesDispatch(ClientPtr client)
146{
147    REQUEST(xXFixesReq);
148    XFixesClientPtr pXFixesClient = GetXFixesClient(client);
149
150    if (pXFixesClient->major_version >= ARRAY_SIZE(version_requests))
151        return BadRequest;
152    if (stuff->xfixesReqType > version_requests[pXFixesClient->major_version])
153        return BadRequest;
154    return (*ProcXFixesVector[stuff->xfixesReqType]) (client);
155}
156
157static _X_COLD int
158SProcXFixesQueryVersion(ClientPtr client)
159{
160    REQUEST(xXFixesQueryVersionReq);
161    REQUEST_SIZE_MATCH(xXFixesQueryVersionReq);
162
163    swaps(&stuff->length);
164    swapl(&stuff->majorVersion);
165    swapl(&stuff->minorVersion);
166    return (*ProcXFixesVector[stuff->xfixesReqType]) (client);
167}
168
169static int (*SProcXFixesVector[XFixesNumberRequests]) (ClientPtr) = {
170/*************** Version 1 ******************/
171    SProcXFixesQueryVersion,
172        SProcXFixesChangeSaveSet,
173        SProcXFixesSelectSelectionInput,
174        SProcXFixesSelectCursorInput, SProcXFixesGetCursorImage,
175/*************** Version 2 ******************/
176        SProcXFixesCreateRegion,
177        SProcXFixesCreateRegionFromBitmap,
178        SProcXFixesCreateRegionFromWindow,
179        SProcXFixesCreateRegionFromGC,
180        SProcXFixesCreateRegionFromPicture,
181        SProcXFixesDestroyRegion,
182        SProcXFixesSetRegion,
183        SProcXFixesCopyRegion,
184        SProcXFixesCombineRegion,
185        SProcXFixesCombineRegion,
186        SProcXFixesCombineRegion,
187        SProcXFixesInvertRegion,
188        SProcXFixesTranslateRegion,
189        SProcXFixesRegionExtents,
190        SProcXFixesFetchRegion,
191        SProcXFixesSetGCClipRegion,
192        SProcXFixesSetWindowShapeRegion,
193        SProcXFixesSetPictureClipRegion,
194        SProcXFixesSetCursorName,
195        SProcXFixesGetCursorName,
196        SProcXFixesGetCursorImageAndName,
197        SProcXFixesChangeCursor, SProcXFixesChangeCursorByName,
198/*************** Version 3 ******************/
199        SProcXFixesExpandRegion,
200/*************** Version 4 ****************/
201        SProcXFixesHideCursor, SProcXFixesShowCursor,
202/*************** Version 5 ****************/
203SProcXFixesCreatePointerBarrier, SProcXFixesDestroyPointerBarrier,};
204
205static _X_COLD int
206SProcXFixesDispatch(ClientPtr client)
207{
208    REQUEST(xXFixesReq);
209    if (stuff->xfixesReqType >= XFixesNumberRequests)
210        return BadRequest;
211    return (*SProcXFixesVector[stuff->xfixesReqType]) (client);
212}
213
214void
215XFixesExtensionInit(void)
216{
217    ExtensionEntry *extEntry;
218
219    if (!dixRegisterPrivateKey
220        (&XFixesClientPrivateKeyRec, PRIVATE_CLIENT, sizeof(XFixesClientRec)))
221        return;
222
223    if (XFixesSelectionInit() && XFixesCursorInit() && XFixesRegionInit() &&
224        (extEntry = AddExtension(XFIXES_NAME, XFixesNumberEvents,
225                                 XFixesNumberErrors,
226                                 ProcXFixesDispatch, SProcXFixesDispatch,
227                                 NULL, StandardMinorOpcode)) != 0) {
228        XFixesReqCode = (unsigned char) extEntry->base;
229        XFixesEventBase = extEntry->eventBase;
230        XFixesErrorBase = extEntry->errorBase;
231        EventSwapVector[XFixesEventBase + XFixesSelectionNotify] =
232            (EventSwapPtr) SXFixesSelectionNotifyEvent;
233        EventSwapVector[XFixesEventBase + XFixesCursorNotify] =
234            (EventSwapPtr) SXFixesCursorNotifyEvent;
235        SetResourceTypeErrorValue(RegionResType, XFixesErrorBase + BadRegion);
236        SetResourceTypeErrorValue(PointerBarrierType,
237                                  XFixesErrorBase + BadBarrier);
238    }
239}
240
241#ifdef PANORAMIX
242
243int (*PanoramiXSaveXFixesVector[XFixesNumberRequests]) (ClientPtr);
244
245void
246PanoramiXFixesInit(void)
247{
248    int i;
249
250    for (i = 0; i < XFixesNumberRequests; i++)
251        PanoramiXSaveXFixesVector[i] = ProcXFixesVector[i];
252    /*
253     * Stuff in Xinerama aware request processing hooks
254     */
255    ProcXFixesVector[X_XFixesSetGCClipRegion] = PanoramiXFixesSetGCClipRegion;
256    ProcXFixesVector[X_XFixesSetWindowShapeRegion] =
257        PanoramiXFixesSetWindowShapeRegion;
258    ProcXFixesVector[X_XFixesSetPictureClipRegion] =
259        PanoramiXFixesSetPictureClipRegion;
260}
261
262void
263PanoramiXFixesReset(void)
264{
265    int i;
266
267    for (i = 0; i < XFixesNumberRequests; i++)
268        ProcXFixesVector[i] = PanoramiXSaveXFixesVector[i];
269}
270
271#endif
272