307 lines
10 KiB
C
307 lines
10 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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/***********************************************************************
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*
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* Request change in the device hierarchy.
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*
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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/XInput.h>
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#include <X11/extensions/XIproto.h>
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#include <X11/extensions/geproto.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 "geext.h"
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#include "xace.h"
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#include "chdevhier.h"
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/***********************************************************************
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*
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* This procedure allows a client to change the device hierarchy through
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* adding new master devices, removing them, etc.
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*
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*/
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int SProcXChangeDeviceHierarchy(ClientPtr client)
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{
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char n;
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REQUEST(xChangeDeviceHierarchyReq);
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swaps(&stuff->length, n);
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return (ProcXChangeDeviceHierarchy(client));
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}
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#define SWAPIF(cmd) if (client->swapped) { cmd; }
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int
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ProcXChangeDeviceHierarchy(ClientPtr client)
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{
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DeviceIntPtr ptr, keybd;
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DeviceIntRec dummyDev;
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xAnyHierarchyChangeInfo *any;
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int required_len = sizeof(xChangeDeviceHierarchyReq);
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char n;
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int rc;
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int nchanges = 0;
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deviceHierarchyChangedEvent ev;
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REQUEST(xChangeDeviceHierarchyReq);
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REQUEST_AT_LEAST_SIZE(xChangeDeviceHierarchyReq);
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any = (xAnyHierarchyChangeInfo*)&stuff[1];
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while(stuff->num_changes--)
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{
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SWAPIF(swapl(&any->type, n));
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SWAPIF(swaps(&any->length, n));
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required_len += any->length;
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if ((stuff->length * 4) < required_len)
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return BadLength;
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switch(any->type)
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{
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case CH_CreateMasterDevice:
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{
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xCreateMasterInfo* c = (xCreateMasterInfo*)any;
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char* name;
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SWAPIF(swaps(&c->namelen, n));
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name = xcalloc(c->namelen + 1, sizeof(char));
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strncpy(name, (char*)&c[1], c->namelen);
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rc = AllocMasterDevice(client, name, &ptr, &keybd);
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if (rc != Success)
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{
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xfree(name);
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goto unwind;
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}
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if (!c->sendCore)
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ptr->coreEvents = keybd->coreEvents = FALSE;
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ActivateDevice(ptr);
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ActivateDevice(keybd);
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if (c->enable)
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{
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EnableDevice(ptr);
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EnableDevice(keybd);
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}
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xfree(name);
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nchanges++;
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}
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break;
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case CH_RemoveMasterDevice:
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{
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xRemoveMasterInfo* r = (xRemoveMasterInfo*)any;
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if (r->returnMode != AttachToMaster &&
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r->returnMode != Floating)
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return BadValue;
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rc = dixLookupDevice(&ptr, r->deviceid, client,
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DixDestroyAccess);
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if (rc != Success)
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goto unwind;
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if (!ptr->isMaster)
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{
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client->errorValue = r->deviceid;
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rc = BadDevice;
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goto unwind;
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}
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/* XXX: For now, don't allow removal of VCP, VCK */
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if (ptr == inputInfo.pointer ||
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ptr == inputInfo.keyboard)
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{
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rc = BadDevice;
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goto unwind;
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}
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/* disable keyboards first */
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if (IsPointerDevice(ptr))
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{
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rc = dixLookupDevice(&keybd,
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ptr->spriteInfo->paired->id,
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client,
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DixDestroyAccess);
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if (rc != Success)
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goto unwind;
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}
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else
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{
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keybd = ptr;
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rc = dixLookupDevice(&ptr,
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keybd->spriteInfo->paired->id,
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client,
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DixDestroyAccess);
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if (rc != Success)
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goto unwind;
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}
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/* Disabling sends the devices floating, reattach them if
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* desired. */
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if (r->returnMode == AttachToMaster)
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{
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DeviceIntPtr attached,
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newptr,
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newkeybd;
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rc = dixLookupDevice(&newptr, r->returnPointer,
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client, DixWriteAccess);
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if (rc != Success)
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goto unwind;
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if (!newptr->isMaster)
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{
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client->errorValue = r->returnPointer;
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rc = BadDevice;
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goto unwind;
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}
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rc = dixLookupDevice(&newkeybd, r->returnKeyboard,
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client, DixWriteAccess);
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if (rc != Success)
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goto unwind;
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if (!newkeybd->isMaster)
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{
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client->errorValue = r->returnKeyboard;
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rc = BadDevice;
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goto unwind;
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}
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for (attached = inputInfo.devices;
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attached;
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attached = attached->next)
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{
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if (!attached->isMaster) {
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if (attached->u.master == ptr)
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AttachDevice(client, attached, newptr);
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if (attached->u.master == keybd)
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AttachDevice(client, attached, newkeybd);
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}
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}
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}
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/* can't disable until we removed pairing */
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keybd->spriteInfo->paired = NULL;
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ptr->spriteInfo->paired = NULL;
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DisableDevice(keybd);
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DisableDevice(ptr);
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RemoveDevice(keybd);
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RemoveDevice(ptr);
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nchanges++;
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}
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break;
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case CH_ChangeAttachment:
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{
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xChangeAttachmentInfo* c = (xChangeAttachmentInfo*)any;
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rc = dixLookupDevice(&ptr, c->deviceid, client,
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DixWriteAccess);
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if (rc != Success)
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goto unwind;
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if (ptr->isMaster)
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{
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client->errorValue = c->deviceid;
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rc = BadDevice;
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goto unwind;
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}
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if (c->changeMode == Floating)
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AttachDevice(client, ptr, NULL);
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else
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{
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DeviceIntPtr newmaster;
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rc = dixLookupDevice(&newmaster, c->newMaster,
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client, DixWriteAccess);
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if (rc != Success)
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goto unwind;
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if (!newmaster->isMaster)
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{
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client->errorValue = c->newMaster;
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rc = BadDevice;
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goto unwind;
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}
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if (!((IsPointerDevice(newmaster) &&
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IsPointerDevice(ptr)) ||
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(IsKeyboardDevice(newmaster) &&
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IsKeyboardDevice(ptr))))
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{
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rc = BadDevice;
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goto unwind;
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}
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AttachDevice(client, ptr, newmaster);
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}
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nchanges++;
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}
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break;
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}
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any = (xAnyHierarchyChangeInfo*)((char*)any + any->length);
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}
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unwind:
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if (nchanges > 0) /* even if an error occured, we need to send an event if
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we changed anything in the hierarchy. */
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{
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ev.type = GenericEvent;
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ev.extension = IReqCode;
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ev.length = 0;
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ev.evtype = XI_DeviceHierarchyChangedNotify;
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ev.time = GetTimeInMillis();
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SendEventToAllWindows(&dummyDev, XI_DeviceHierarchyChangedMask,
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(xEvent*)&ev, 1);
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}
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return rc;
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}
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