159 lines
4.6 KiB
C
159 lines
4.6 KiB
C
/*
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* Copyright 2007-2008 Peter Hutterer
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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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* Author: Peter Hutterer, University of South Australia, NICTA
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*/
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#define NEED_EVENTS
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#define NEED_REPLIES
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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 <X11/X.h> /* for inputstr.h */
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#include <X11/Xproto.h> /* Request macro */
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#include "inputstr.h" /* DeviceIntPtr */
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#include "windowstr.h" /* window structure */
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#include "scrnintstr.h" /* screen structure */
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#include <X11/extensions/XI.h>
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#include <X11/extensions/XIproto.h>
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#include "extnsionst.h"
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#include "exevents.h"
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#include "exglobals.h"
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#include "chaccess.h"
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/***********************************************************************
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* This procedure allows a client to change window access control.
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*/
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int
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SProcXChangeWindowAccess(ClientPtr client)
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{
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char n;
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REQUEST(xChangeWindowAccessReq);
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swaps(&stuff->length, n);
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swapl(&stuff->win, n);
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return ProcXChangeWindowAccess(client);
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}
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int
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ProcXChangeWindowAccess(ClientPtr client)
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{
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int padding, rc, i;
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XID* deviceids = NULL;
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WindowPtr win;
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DeviceIntPtr* perm_devices = NULL;
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DeviceIntPtr* deny_devices = NULL;
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REQUEST(xChangeWindowAccessReq);
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REQUEST_AT_LEAST_SIZE(xChangeWindowAccessReq);
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padding = (4 - (((stuff->npermit + stuff->ndeny) * sizeof(XID)) % 4)) % 4;
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if (stuff->length != ((sizeof(xChangeWindowAccessReq) +
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(((stuff->npermit + stuff->ndeny) * sizeof(XID)) + padding)) >> 2))
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{
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return BadLength;
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}
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rc = dixLookupWindow(&win, stuff->win, client, DixWriteAccess);
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if (rc != Success)
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{
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return rc;
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}
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/* Are we clearing? if so, ignore the rest */
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if (stuff->clear)
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{
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rc = ACClearWindowAccess(client, win, stuff->clear);
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return rc;
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}
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if (stuff->npermit || stuff->ndeny)
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deviceids = (XID*)&stuff[1];
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if (stuff->npermit)
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{
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perm_devices =
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(DeviceIntPtr*)xalloc(stuff->npermit * sizeof(DeviceIntPtr));
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if (!perm_devices)
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{
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ErrorF("[Xi] ProcXChangeWindowAccess: alloc failure.\n");
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return BadImplementation;
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}
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/* if one of the devices cannot be accessed, we don't do anything.*/
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for (i = 0; i < stuff->npermit; i++)
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{
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rc = dixLookupDevice(&perm_devices[i], deviceids[i], client,
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DixWriteAccess);
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if (rc != Success)
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{
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xfree(perm_devices);
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return rc;
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}
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}
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}
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if (stuff->ndeny)
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{
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deny_devices =
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(DeviceIntPtr*)xalloc(stuff->ndeny * sizeof(DeviceIntPtr));
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if (!deny_devices)
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{
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ErrorF("[Xi] ProcXChangeWindowAccecss: alloc failure.\n");
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xfree(perm_devices);
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return BadImplementation;
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}
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for (i = 0; i < stuff->ndeny; i++)
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{
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rc = dixLookupDevice(&deny_devices[i],
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deviceids[i+stuff->npermit],
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client,
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DixWriteAccess);
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if (rc != Success)
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{
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xfree(perm_devices);
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xfree(deny_devices);
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return rc;
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}
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}
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}
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rc = ACChangeWindowAccess(client, win, stuff->defaultRule,
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perm_devices, stuff->npermit,
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deny_devices, stuff->ndeny);
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if (rc != Success)
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{
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return rc;
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}
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xfree(perm_devices);
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xfree(deny_devices);
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return Success;
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}
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