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-rw-r--r--xorg-server/Xi/xichangehierarchy.c454
1 files changed, 454 insertions, 0 deletions
diff --git a/xorg-server/Xi/xichangehierarchy.c b/xorg-server/Xi/xichangehierarchy.c
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+/*
+ * Copyright 2007-2008 Peter Hutterer
+ * Copyright 2009 Red Hat, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Author: Peter Hutterer, University of South Australia, NICTA
+ */
+
+/***********************************************************************
+ *
+ * Request change in the device hierarchy.
+ *
+ */
+
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include <X11/X.h> /* for inputstr.h */
+#include <X11/Xproto.h> /* Request macro */
+#include "inputstr.h" /* DeviceIntPtr */
+#include "windowstr.h" /* window structure */
+#include "scrnintstr.h" /* screen structure */
+#include <X11/extensions/XI.h>
+#include <X11/extensions/XI2proto.h>
+#include <X11/extensions/geproto.h>
+#include "extnsionst.h"
+#include "exevents.h"
+#include "exglobals.h"
+#include "geext.h"
+#include "xace.h"
+#include "xiquerydevice.h" /* for GetDeviceUse */
+
+#include "xkbsrv.h"
+
+#include "xichangehierarchy.h"
+
+/**
+ * Send the current state of the device hierarchy to all clients.
+ */
+void XISendDeviceHierarchyEvent(int flags[MAXDEVICES])
+{
+ xXIHierarchyEvent *ev;
+ xXIHierarchyInfo *info;
+ DeviceIntRec dummyDev;
+ DeviceIntPtr dev;
+ int i;
+
+ if (!flags)
+ return;
+
+ ev = xcalloc(1, sizeof(xXIHierarchyEvent) +
+ MAXDEVICES * sizeof(xXIHierarchyInfo));
+ ev->type = GenericEvent;
+ ev->extension = IReqCode;
+ ev->evtype = XI_HierarchyChanged;
+ ev->time = GetTimeInMillis();
+ ev->flags = 0;
+ ev->num_info = inputInfo.numDevices;
+
+ info = (xXIHierarchyInfo*)&ev[1];
+ for (dev = inputInfo.devices; dev; dev = dev->next)
+ {
+ info->deviceid = dev->id;
+ info->enabled = dev->enabled;
+ info->use = GetDeviceUse(dev, &info->attachment);
+ info->flags = flags[dev->id];
+ ev->flags |= info->flags;
+ info++;
+ }
+ for (dev = inputInfo.off_devices; dev; dev = dev->next)
+ {
+ info->deviceid = dev->id;
+ info->enabled = dev->enabled;
+ info->use = GetDeviceUse(dev, &info->attachment);
+ info->flags = flags[dev->id];
+ ev->flags |= info->flags;
+ info++;
+ }
+
+
+ for (i = 0; i < MAXDEVICES; i++)
+ {
+ if (flags[i] & (XIMasterRemoved | XISlaveRemoved))
+ {
+ info->deviceid = i;
+ info->enabled = FALSE;
+ info->flags = flags[i];
+ info->use = 0;
+ ev->flags |= info->flags;
+ ev->num_info++;
+ info++;
+ }
+ }
+
+ ev->length = bytes_to_int32(ev->num_info * sizeof(xXIHierarchyInfo));
+
+ dummyDev.id = XIAllDevices;
+ SendEventToAllWindows(&dummyDev, (XI_HierarchyChangedMask >> 8), (xEvent*)ev, 1);
+ xfree(ev);
+}
+
+
+/***********************************************************************
+ *
+ * This procedure allows a client to change the device hierarchy through
+ * adding new master devices, removing them, etc.
+ *
+ */
+
+int SProcXIChangeHierarchy(ClientPtr client)
+{
+ char n;
+
+ REQUEST(xXIChangeHierarchyReq);
+ swaps(&stuff->length, n);
+ return (ProcXIChangeHierarchy(client));
+}
+
+#define SWAPIF(cmd) if (client->swapped) { cmd; }
+
+int
+ProcXIChangeHierarchy(ClientPtr client)
+{
+ DeviceIntPtr ptr, keybd, XTestptr, XTestkeybd;
+ xXIAnyHierarchyChangeInfo *any;
+ int required_len = sizeof(xXIChangeHierarchyReq);
+ char n;
+ int rc = Success;
+ int flags[MAXDEVICES] = {0};
+
+ REQUEST(xXIChangeHierarchyReq);
+ REQUEST_AT_LEAST_SIZE(xXIChangeHierarchyReq);
+
+ if (!stuff->num_changes)
+ return rc;
+
+ any = (xXIAnyHierarchyChangeInfo*)&stuff[1];
+ while(stuff->num_changes--)
+ {
+ SWAPIF(swapl(&any->type, n));
+ SWAPIF(swaps(&any->length, n));
+
+ required_len += any->length;
+ if ((stuff->length * 4) < required_len)
+ return BadLength;
+
+ switch(any->type)
+ {
+ case XIAddMaster:
+ {
+ xXIAddMasterInfo* c = (xXIAddMasterInfo*)any;
+ char* name;
+
+ SWAPIF(swaps(&c->name_len, n));
+ name = xcalloc(c->name_len + 1, sizeof(char));
+ strncpy(name, (char*)&c[1], c->name_len);
+
+
+ rc = AllocDevicePair(client, name, &ptr, &keybd,
+ CorePointerProc, CoreKeyboardProc,
+ TRUE);
+ if (rc != Success)
+ {
+ xfree(name);
+ goto unwind;
+ }
+
+ if (!c->send_core)
+ ptr->coreEvents = keybd->coreEvents = FALSE;
+
+ /* Allocate virtual slave devices for xtest events */
+ rc = AllocXTestDevice(client, name, &XTestptr, &XTestkeybd,
+ ptr, keybd);
+ if (rc != Success)
+ {
+
+ xfree(name);
+ goto unwind;
+ }
+
+ ActivateDevice(ptr, FALSE);
+ ActivateDevice(keybd, FALSE);
+ flags[ptr->id] |= XIMasterAdded;
+ flags[keybd->id] |= XIMasterAdded;
+
+ ActivateDevice(XTestptr, FALSE);
+ ActivateDevice(XTestkeybd, FALSE);
+ flags[XTestptr->id] |= XISlaveAdded;
+ flags[XTestkeybd->id] |= XISlaveAdded;
+
+ if (c->enable)
+ {
+ EnableDevice(ptr, FALSE);
+ EnableDevice(keybd, FALSE);
+ flags[ptr->id] |= XIDeviceEnabled;
+ flags[keybd->id] |= XIDeviceEnabled;
+
+ EnableDevice(XTestptr, FALSE);
+ EnableDevice(XTestkeybd, FALSE);
+ flags[XTestptr->id] |= XIDeviceEnabled;
+ flags[XTestkeybd->id] |= XIDeviceEnabled;
+ }
+
+ /* Attach the XTest virtual devices to the newly
+ created master device */
+ AttachDevice(NULL, XTestptr, ptr);
+ AttachDevice(NULL, XTestkeybd, keybd);
+ flags[XTestptr->id] |= XISlaveAttached;
+ flags[XTestkeybd->id] |= XISlaveAttached;
+
+ xfree(name);
+ }
+ break;
+ case XIRemoveMaster:
+ {
+ xXIRemoveMasterInfo* r = (xXIRemoveMasterInfo*)any;
+
+ if (r->return_mode != XIAttachToMaster &&
+ r->return_mode != XIFloating)
+ return BadValue;
+
+ rc = dixLookupDevice(&ptr, r->deviceid, client,
+ DixDestroyAccess);
+ if (rc != Success)
+ goto unwind;
+
+ if (!IsMaster(ptr))
+ {
+ client->errorValue = r->deviceid;
+ rc = BadDevice;
+ goto unwind;
+ }
+
+ /* XXX: For now, don't allow removal of VCP, VCK */
+ if (ptr == inputInfo.pointer ||
+ ptr == inputInfo.keyboard)
+ {
+ rc = BadDevice;
+ goto unwind;
+ }
+
+
+ ptr = GetMaster(ptr, MASTER_POINTER);
+ rc = dixLookupDevice(&ptr,
+ ptr->id,
+ client,
+ DixDestroyAccess);
+ if (rc != Success)
+ goto unwind;
+ keybd = GetMaster(ptr, MASTER_KEYBOARD);
+ rc = dixLookupDevice(&keybd,
+ keybd->id,
+ client,
+ DixDestroyAccess);
+ if (rc != Success)
+ goto unwind;
+
+ XTestptr = GetXTestDevice(ptr);
+ rc = dixLookupDevice(&XTestptr, XTestptr->id, client,
+ DixDestroyAccess);
+ if (rc != Success)
+ goto unwind;
+
+ XTestkeybd = GetXTestDevice(keybd);
+ rc = dixLookupDevice(&XTestkeybd, XTestkeybd->id, client,
+ DixDestroyAccess);
+ if (rc != Success)
+ goto unwind;
+
+ /* Disabling sends the devices floating, reattach them if
+ * desired. */
+ if (r->return_mode == XIAttachToMaster)
+ {
+ DeviceIntPtr attached,
+ newptr,
+ newkeybd;
+
+ rc = dixLookupDevice(&newptr, r->return_pointer,
+ client, DixAddAccess);
+ if (rc != Success)
+ goto unwind;
+
+ if (!IsMaster(newptr))
+ {
+ client->errorValue = r->return_pointer;
+ rc = BadDevice;
+ goto unwind;
+ }
+
+ rc = dixLookupDevice(&newkeybd, r->return_keyboard,
+ client, DixAddAccess);
+ if (rc != Success)
+ goto unwind;
+
+ if (!IsMaster(newkeybd))
+ {
+ client->errorValue = r->return_keyboard;
+ rc = BadDevice;
+ goto unwind;
+ }
+
+ for (attached = inputInfo.devices;
+ attached;
+ attached = attached->next)
+ {
+ if (!IsMaster(attached)) {
+ if (attached->u.master == ptr)
+ {
+ AttachDevice(client, attached, newptr);
+ flags[attached->id] |= XISlaveAttached;
+ }
+ if (attached->u.master == keybd)
+ {
+ AttachDevice(client, attached, newkeybd);
+ flags[attached->id] |= XISlaveAttached;
+ }
+ }
+ }
+ }
+
+ /* can't disable until we removed pairing */
+ keybd->spriteInfo->paired = NULL;
+ ptr->spriteInfo->paired = NULL;
+ XTestptr->spriteInfo->paired = NULL;
+ XTestkeybd->spriteInfo->paired = NULL;
+
+ /* disable the remove the devices, XTest devices must be done first
+ else the sprites they rely on will be destroyed */
+ DisableDevice(XTestptr, FALSE);
+ DisableDevice(XTestkeybd, FALSE);
+ DisableDevice(keybd, FALSE);
+ DisableDevice(ptr, FALSE);
+ flags[XTestptr->id] |= XIDeviceDisabled | XISlaveDetached;
+ flags[XTestkeybd->id] |= XIDeviceDisabled | XISlaveDetached;
+ flags[keybd->id] |= XIDeviceDisabled;
+ flags[ptr->id] |= XIDeviceDisabled;
+
+ RemoveDevice(XTestptr, FALSE);
+ RemoveDevice(XTestkeybd, FALSE);
+ RemoveDevice(keybd, FALSE);
+ RemoveDevice(ptr, FALSE);
+ flags[XTestptr->id] |= XISlaveRemoved;
+ flags[XTestkeybd->id] |= XISlaveRemoved;
+ flags[keybd->id] |= XIMasterRemoved;
+ flags[ptr->id] |= XIMasterRemoved;
+ }
+ break;
+ case XIDetachSlave:
+ {
+ xXIDetachSlaveInfo* c = (xXIDetachSlaveInfo*)any;
+
+ rc = dixLookupDevice(&ptr, c->deviceid, client,
+ DixManageAccess);
+ if (rc != Success)
+ goto unwind;
+
+ if (IsMaster(ptr))
+ {
+ client->errorValue = c->deviceid;
+ rc = BadDevice;
+ goto unwind;
+ }
+
+ /* Don't allow changes to XTest Devices, these are fixed */
+ if (IsXTestDevice(ptr, NULL))
+ {
+ client->errorValue = c->deviceid;
+ rc = BadDevice;
+ goto unwind;
+ }
+
+ AttachDevice(client, ptr, NULL);
+ flags[ptr->id] |= XISlaveDetached;
+ }
+ break;
+ case XIAttachSlave:
+ {
+ xXIAttachSlaveInfo* c = (xXIAttachSlaveInfo*)any;
+ DeviceIntPtr newmaster;
+
+ rc = dixLookupDevice(&ptr, c->deviceid, client,
+ DixManageAccess);
+ if (rc != Success)
+ goto unwind;
+
+ if (IsMaster(ptr))
+ {
+ client->errorValue = c->deviceid;
+ rc = BadDevice;
+ goto unwind;
+ }
+
+ /* Don't allow changes to XTest Devices, these are fixed */
+ if (IsXTestDevice(ptr, NULL))
+ {
+ client->errorValue = c->deviceid;
+ rc = BadDevice;
+ goto unwind;
+ }
+
+ rc = dixLookupDevice(&newmaster, c->new_master,
+ client, DixAddAccess);
+ if (rc != Success)
+ goto unwind;
+ if (!IsMaster(newmaster))
+ {
+ client->errorValue = c->new_master;
+ rc = BadDevice;
+ goto unwind;
+ }
+
+ if (!((IsPointerDevice(newmaster) &&
+ IsPointerDevice(ptr)) ||
+ (IsKeyboardDevice(newmaster) &&
+ IsKeyboardDevice(ptr))))
+ {
+ rc = BadDevice;
+ goto unwind;
+ }
+ AttachDevice(client, ptr, newmaster);
+ flags[ptr->id] |= XISlaveAttached;
+ }
+ break;
+ }
+
+ any = (xXIAnyHierarchyChangeInfo*)((char*)any + any->length * 4);
+ }
+
+unwind:
+
+ XISendDeviceHierarchyEvent(flags);
+ return rc;
+}
+
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