b2a0de4f07
If you say FixesQueryVersion twice we remember whatever the second version number was. With just libXfixes this isn't an issue because the request is hidden in extension setup, but libxcb-xfixes doesn't do that for you, which means the second one can _lower_ the requested fixes version, disabling requests that the client thought it had enabled. Paper over this by allowing the version number to be raised but not lowered. Also go ahead and delete the minor version number from the client state since xfixes doesn't have minor versions (yet, anyway).
284 lines
10 KiB
C
284 lines
10 KiB
C
/*
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* Copyright (c) 2006, Oracle and/or its affiliates. All rights reserved.
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* Copyright 2010, 2021 Red Hat, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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* Copyright © 2002 Keith Packard
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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* documentation, and that the name of Keith Packard not be used in
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* advertising or publicity pertaining to distribution of the software without
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* specific, written prior permission. Keith Packard makes no
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* representations about the suitability of this software for any purpose. It
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* is provided "as is" without express or implied warranty.
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*
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* KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifdef HAVE_DIX_CONFIG_H
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#include <dix-config.h>
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#endif
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#include "xfixesint.h"
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#include "protocol-versions.h"
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#include "extinit.h"
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static unsigned char XFixesReqCode;
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int XFixesEventBase;
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int XFixesErrorBase;
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static DevPrivateKeyRec XFixesClientPrivateKeyRec;
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#define XFixesClientPrivateKey (&XFixesClientPrivateKeyRec)
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static int
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ProcXFixesQueryVersion(ClientPtr client)
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{
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int major, minor;
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XFixesClientPtr pXFixesClient = GetXFixesClient(client);
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xXFixesQueryVersionReply rep = {
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.type = X_Reply,
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.sequenceNumber = client->sequence,
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.length = 0
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};
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REQUEST(xXFixesQueryVersionReq);
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REQUEST_SIZE_MATCH(xXFixesQueryVersionReq);
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if (version_compare(stuff->majorVersion, stuff->minorVersion,
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SERVER_XFIXES_MAJOR_VERSION,
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SERVER_XFIXES_MINOR_VERSION) < 0) {
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major = max(pXFixesClient->major_version, stuff->majorVersion);
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minor = stuff->minorVersion;
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}
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else {
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major = SERVER_XFIXES_MAJOR_VERSION;
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minor = SERVER_XFIXES_MINOR_VERSION;
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}
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pXFixesClient->major_version = major;
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rep.majorVersion = min(stuff->majorVersion, major);
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rep.minorVersion = minor;
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if (client->swapped) {
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swaps(&rep.sequenceNumber);
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swapl(&rep.length);
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swapl(&rep.majorVersion);
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swapl(&rep.minorVersion);
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}
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WriteToClient(client, sizeof(xXFixesQueryVersionReply), &rep);
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return Success;
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}
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/* Major version controls available requests */
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static const int version_requests[] = {
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X_XFixesQueryVersion, /* before client sends QueryVersion */
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X_XFixesGetCursorImage, /* Version 1 */
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X_XFixesChangeCursorByName, /* Version 2 */
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X_XFixesExpandRegion, /* Version 3 */
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X_XFixesShowCursor, /* Version 4 */
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X_XFixesDestroyPointerBarrier, /* Version 5 */
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X_XFixesGetClientDisconnectMode, /* Version 6 */
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};
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int (*ProcXFixesVector[XFixesNumberRequests]) (ClientPtr) = {
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/*************** Version 1 ******************/
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ProcXFixesQueryVersion,
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ProcXFixesChangeSaveSet,
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ProcXFixesSelectSelectionInput,
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ProcXFixesSelectCursorInput, ProcXFixesGetCursorImage,
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/*************** Version 2 ******************/
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ProcXFixesCreateRegion,
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ProcXFixesCreateRegionFromBitmap,
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ProcXFixesCreateRegionFromWindow,
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ProcXFixesCreateRegionFromGC,
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ProcXFixesCreateRegionFromPicture,
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ProcXFixesDestroyRegion,
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ProcXFixesSetRegion,
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ProcXFixesCopyRegion,
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ProcXFixesCombineRegion,
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ProcXFixesCombineRegion,
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ProcXFixesCombineRegion,
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ProcXFixesInvertRegion,
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ProcXFixesTranslateRegion,
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ProcXFixesRegionExtents,
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ProcXFixesFetchRegion,
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ProcXFixesSetGCClipRegion,
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ProcXFixesSetWindowShapeRegion,
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ProcXFixesSetPictureClipRegion,
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ProcXFixesSetCursorName,
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ProcXFixesGetCursorName,
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ProcXFixesGetCursorImageAndName,
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ProcXFixesChangeCursor, ProcXFixesChangeCursorByName,
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/*************** Version 3 ******************/
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ProcXFixesExpandRegion,
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/*************** Version 4 ****************/
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ProcXFixesHideCursor, ProcXFixesShowCursor,
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/*************** Version 5 ****************/
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ProcXFixesCreatePointerBarrier, ProcXFixesDestroyPointerBarrier,
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/*************** Version 6 ****************/
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ProcXFixesSetClientDisconnectMode, ProcXFixesGetClientDisconnectMode,
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};
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static int
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ProcXFixesDispatch(ClientPtr client)
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{
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REQUEST(xXFixesReq);
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XFixesClientPtr pXFixesClient = GetXFixesClient(client);
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if (pXFixesClient->major_version >= ARRAY_SIZE(version_requests))
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return BadRequest;
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if (stuff->xfixesReqType > version_requests[pXFixesClient->major_version])
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return BadRequest;
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return (*ProcXFixesVector[stuff->xfixesReqType]) (client);
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}
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static _X_COLD int
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SProcXFixesQueryVersion(ClientPtr client)
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{
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REQUEST(xXFixesQueryVersionReq);
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REQUEST_SIZE_MATCH(xXFixesQueryVersionReq);
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swaps(&stuff->length);
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swapl(&stuff->majorVersion);
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swapl(&stuff->minorVersion);
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return (*ProcXFixesVector[stuff->xfixesReqType]) (client);
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}
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static int (*SProcXFixesVector[XFixesNumberRequests]) (ClientPtr) = {
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/*************** Version 1 ******************/
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SProcXFixesQueryVersion,
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SProcXFixesChangeSaveSet,
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SProcXFixesSelectSelectionInput,
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SProcXFixesSelectCursorInput, SProcXFixesGetCursorImage,
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/*************** Version 2 ******************/
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SProcXFixesCreateRegion,
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SProcXFixesCreateRegionFromBitmap,
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SProcXFixesCreateRegionFromWindow,
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SProcXFixesCreateRegionFromGC,
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SProcXFixesCreateRegionFromPicture,
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SProcXFixesDestroyRegion,
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SProcXFixesSetRegion,
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SProcXFixesCopyRegion,
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SProcXFixesCombineRegion,
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SProcXFixesCombineRegion,
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SProcXFixesCombineRegion,
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SProcXFixesInvertRegion,
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SProcXFixesTranslateRegion,
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SProcXFixesRegionExtents,
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SProcXFixesFetchRegion,
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SProcXFixesSetGCClipRegion,
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SProcXFixesSetWindowShapeRegion,
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SProcXFixesSetPictureClipRegion,
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SProcXFixesSetCursorName,
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SProcXFixesGetCursorName,
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SProcXFixesGetCursorImageAndName,
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SProcXFixesChangeCursor, SProcXFixesChangeCursorByName,
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/*************** Version 3 ******************/
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SProcXFixesExpandRegion,
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/*************** Version 4 ****************/
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SProcXFixesHideCursor, SProcXFixesShowCursor,
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/*************** Version 5 ****************/
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SProcXFixesCreatePointerBarrier, SProcXFixesDestroyPointerBarrier,
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/*************** Version 6 ****************/
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SProcXFixesSetClientDisconnectMode, SProcXFixesGetClientDisconnectMode,
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};
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static _X_COLD int
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SProcXFixesDispatch(ClientPtr client)
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{
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REQUEST(xXFixesReq);
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if (stuff->xfixesReqType >= XFixesNumberRequests)
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return BadRequest;
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return (*SProcXFixesVector[stuff->xfixesReqType]) (client);
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}
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void
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XFixesExtensionInit(void)
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{
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ExtensionEntry *extEntry;
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if (!dixRegisterPrivateKey
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(&XFixesClientPrivateKeyRec, PRIVATE_CLIENT, sizeof(XFixesClientRec)))
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return;
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if (XFixesSelectionInit() &&
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XFixesCursorInit() &&
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XFixesRegionInit() &&
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XFixesClientDisconnectInit() &&
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(extEntry = AddExtension(XFIXES_NAME, XFixesNumberEvents,
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XFixesNumberErrors,
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ProcXFixesDispatch, SProcXFixesDispatch,
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NULL, StandardMinorOpcode)) != 0) {
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XFixesReqCode = (unsigned char) extEntry->base;
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XFixesEventBase = extEntry->eventBase;
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XFixesErrorBase = extEntry->errorBase;
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EventSwapVector[XFixesEventBase + XFixesSelectionNotify] =
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(EventSwapPtr) SXFixesSelectionNotifyEvent;
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EventSwapVector[XFixesEventBase + XFixesCursorNotify] =
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(EventSwapPtr) SXFixesCursorNotifyEvent;
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SetResourceTypeErrorValue(RegionResType, XFixesErrorBase + BadRegion);
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SetResourceTypeErrorValue(PointerBarrierType,
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XFixesErrorBase + BadBarrier);
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}
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}
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#ifdef PANORAMIX
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int (*PanoramiXSaveXFixesVector[XFixesNumberRequests]) (ClientPtr);
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void
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PanoramiXFixesInit(void)
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{
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int i;
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for (i = 0; i < XFixesNumberRequests; i++)
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PanoramiXSaveXFixesVector[i] = ProcXFixesVector[i];
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/*
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* Stuff in Xinerama aware request processing hooks
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*/
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ProcXFixesVector[X_XFixesSetGCClipRegion] = PanoramiXFixesSetGCClipRegion;
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ProcXFixesVector[X_XFixesSetWindowShapeRegion] =
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PanoramiXFixesSetWindowShapeRegion;
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ProcXFixesVector[X_XFixesSetPictureClipRegion] =
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PanoramiXFixesSetPictureClipRegion;
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}
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void
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PanoramiXFixesReset(void)
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{
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int i;
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for (i = 0; i < XFixesNumberRequests; i++)
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ProcXFixesVector[i] = PanoramiXSaveXFixesVector[i];
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}
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#endif
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