aa2babf11c
inputstr includes XI2proto.h for the sole purpose of XI_LASTEVENT. However, using XI_LASTEVENT in the server is prone to errors, if the server is recompiled against a newer version of the protocol it would bump this variable and associates bits, including potential ABI. This patch defines an XI2LASTEVENT for use in the server and removes the XI2proto.h require. XI2LASTEVENT is the current value of XI_LASTEVENT. This patch is required by components that require access to inputInfo (currently xf86-video-geode and xf86-video-cirrus) but should not have a require for the XI2 protocol. Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
561 lines
16 KiB
C
561 lines
16 KiB
C
/*
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Copyright 1987, 1998 The Open Group
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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.
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The above copyright notice and this permission notice shall be included
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in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR
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OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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OTHER DEALINGS IN THE SOFTWARE.
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Except as contained in this notice, the name of The Open Group shall
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not be used in advertising or otherwise to promote the sale, use or
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other dealings in this Software without prior written authorization
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from The Open Group.
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Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts,
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All Rights Reserved
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Permission to use, copy, modify, and distribute this software and its
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documentation for any purpose and without fee is hereby granted,
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provided that the above copyright notice appear in all copies and that
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both that copyright notice and this permission notice appear in
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supporting documentation, and that the name of Digital not be
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used in advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
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ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
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DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
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ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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WHETHER IN AN action OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
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ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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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 <X11/X.h>
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#include "misc.h"
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#include <X11/Xproto.h>
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#include <X11/extensions/XI2.h>
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#include "windowstr.h"
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#include "inputstr.h"
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#include "cursorstr.h"
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#include "dixgrabs.h"
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#include "xace.h"
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#include "exevents.h"
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#define BITMASK(i) (((Mask)1) << ((i) & 31))
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#define MASKIDX(i) ((i) >> 5)
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#define MASKWORD(buf, i) buf[MASKIDX(i)]
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#define BITSET(buf, i) MASKWORD(buf, i) |= BITMASK(i)
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#define BITCLEAR(buf, i) MASKWORD(buf, i) &= ~BITMASK(i)
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#define GETBIT(buf, i) (MASKWORD(buf, i) & BITMASK(i))
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GrabPtr
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CreateGrab(
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int client,
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DeviceIntPtr device,
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DeviceIntPtr modDevice,
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WindowPtr window,
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GrabType grabtype,
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GrabMask *mask,
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GrabParameters *param,
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int type,
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KeyCode keybut, /* key or button */
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WindowPtr confineTo,
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CursorPtr cursor)
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{
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GrabPtr grab;
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grab = xcalloc(1, sizeof(GrabRec));
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if (!grab)
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return (GrabPtr)NULL;
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grab->resource = FakeClientID(client);
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grab->device = device;
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grab->window = window;
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grab->eventMask = mask->core; /* same for XI */
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grab->deviceMask = 0;
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grab->ownerEvents = param->ownerEvents;
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grab->keyboardMode = param->this_device_mode;
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grab->pointerMode = param->other_devices_mode;
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grab->modifiersDetail.exact = param->modifiers;
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grab->modifiersDetail.pMask = NULL;
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grab->modifierDevice = modDevice;
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grab->type = type;
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grab->grabtype = grabtype;
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grab->detail.exact = keybut;
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grab->detail.pMask = NULL;
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grab->confineTo = confineTo;
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grab->cursor = cursor;
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grab->next = NULL;
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if (grabtype == GRABTYPE_XI2)
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memcpy(grab->xi2mask, mask->xi2mask, sizeof(mask->xi2mask));
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if (cursor)
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cursor->refcnt++;
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return grab;
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}
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static void
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FreeGrab(GrabPtr pGrab)
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{
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if (pGrab->modifiersDetail.pMask != NULL)
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xfree(pGrab->modifiersDetail.pMask);
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if (pGrab->detail.pMask != NULL)
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xfree(pGrab->detail.pMask);
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if (pGrab->cursor)
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FreeCursor(pGrab->cursor, (Cursor)0);
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xfree(pGrab);
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}
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int
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DeletePassiveGrab(pointer value, XID id)
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{
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GrabPtr g, prev;
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GrabPtr pGrab = (GrabPtr)value;
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/* it is OK if the grab isn't found */
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prev = 0;
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for (g = (wPassiveGrabs (pGrab->window)); g; g = g->next)
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{
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if (pGrab == g)
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{
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if (prev)
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prev->next = g->next;
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else
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if (!(pGrab->window->optional->passiveGrabs = g->next))
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CheckWindowOptionalNeed (pGrab->window);
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break;
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}
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prev = g;
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}
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FreeGrab(pGrab);
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return Success;
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}
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static Mask *
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DeleteDetailFromMask(Mask *pDetailMask, unsigned int detail)
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{
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Mask *mask;
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int i;
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mask = xalloc(sizeof(Mask) * MasksPerDetailMask);
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if (mask)
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{
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if (pDetailMask)
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for (i = 0; i < MasksPerDetailMask; i++)
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mask[i]= pDetailMask[i];
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else
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for (i = 0; i < MasksPerDetailMask; i++)
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mask[i]= ~0L;
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BITCLEAR(mask, detail);
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}
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return mask;
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}
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static Bool
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IsInGrabMask(
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DetailRec firstDetail,
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DetailRec secondDetail,
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unsigned int exception)
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{
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if (firstDetail.exact == exception)
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{
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if (firstDetail.pMask == NULL)
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return TRUE;
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/* (at present) never called with two non-null pMasks */
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if (secondDetail.exact == exception)
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return FALSE;
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if (GETBIT(firstDetail.pMask, secondDetail.exact))
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return TRUE;
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}
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return FALSE;
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}
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static Bool
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IdenticalExactDetails(
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unsigned int firstExact,
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unsigned int secondExact,
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unsigned int exception)
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{
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if ((firstExact == exception) || (secondExact == exception))
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return FALSE;
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if (firstExact == secondExact)
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return TRUE;
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return FALSE;
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}
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static Bool
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DetailSupersedesSecond(
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DetailRec firstDetail,
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DetailRec secondDetail,
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unsigned int exception)
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{
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if (IsInGrabMask(firstDetail, secondDetail, exception))
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return TRUE;
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if (IdenticalExactDetails(firstDetail.exact, secondDetail.exact,
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exception))
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return TRUE;
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return FALSE;
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}
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static Bool
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GrabSupersedesSecond(GrabPtr pFirstGrab, GrabPtr pSecondGrab)
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{
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unsigned int any_modifier = (pFirstGrab->grabtype == GRABTYPE_XI2) ?
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(unsigned int)XIAnyModifier :
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(unsigned int)AnyModifier;
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if (!DetailSupersedesSecond(pFirstGrab->modifiersDetail,
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pSecondGrab->modifiersDetail,
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any_modifier))
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return FALSE;
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if (DetailSupersedesSecond(pFirstGrab->detail,
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pSecondGrab->detail, (unsigned int)AnyKey))
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return TRUE;
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return FALSE;
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}
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/**
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* Compares two grabs and returns TRUE if the first grab matches the second
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* grab.
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*
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* A match is when
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* - the devices set for the grab are equal (this is optional).
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* - the event types for both grabs are equal.
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* - XXX
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*
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* @param ignoreDevice TRUE if the device settings on the grabs are to be
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* ignored.
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* @return TRUE if the grabs match or FALSE otherwise.
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*/
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Bool
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GrabMatchesSecond(GrabPtr pFirstGrab, GrabPtr pSecondGrab, Bool ignoreDevice)
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{
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unsigned int any_modifier = (pFirstGrab->grabtype == GRABTYPE_XI2) ?
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(unsigned int)XIAnyModifier :
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(unsigned int)AnyModifier;
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if (pFirstGrab->grabtype != pSecondGrab->grabtype)
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return FALSE;
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if (pFirstGrab->grabtype == GRABTYPE_XI2)
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{
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if (pFirstGrab->device == inputInfo.all_devices ||
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pSecondGrab->device == inputInfo.all_devices)
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{
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/* do nothing */
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} else if (pFirstGrab->device == inputInfo.all_master_devices)
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{
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if (pSecondGrab->device != inputInfo.all_master_devices &&
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!IsMaster(pSecondGrab->device))
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return FALSE;
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} else if (pSecondGrab->device == inputInfo.all_master_devices)
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{
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if (pFirstGrab->device != inputInfo.all_master_devices &&
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!IsMaster(pFirstGrab->device))
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return FALSE;
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} else if (pSecondGrab->device != pFirstGrab->device)
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return FALSE;
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} else if (!ignoreDevice &&
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((pFirstGrab->device != pSecondGrab->device) ||
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(pFirstGrab->modifierDevice != pSecondGrab->modifierDevice)))
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return FALSE;
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if (pFirstGrab->type != pSecondGrab->type)
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return FALSE;
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if (GrabSupersedesSecond(pFirstGrab, pSecondGrab) ||
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GrabSupersedesSecond(pSecondGrab, pFirstGrab))
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return TRUE;
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if (DetailSupersedesSecond(pSecondGrab->detail, pFirstGrab->detail,
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(unsigned int)AnyKey)
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&&
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DetailSupersedesSecond(pFirstGrab->modifiersDetail,
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pSecondGrab->modifiersDetail,
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any_modifier))
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return TRUE;
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if (DetailSupersedesSecond(pFirstGrab->detail, pSecondGrab->detail,
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(unsigned int)AnyKey)
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&&
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DetailSupersedesSecond(pSecondGrab->modifiersDetail,
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pFirstGrab->modifiersDetail,
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any_modifier))
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return TRUE;
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return FALSE;
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}
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static Bool
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GrabsAreIdentical(GrabPtr pFirstGrab, GrabPtr pSecondGrab)
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{
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unsigned int any_modifier = (pFirstGrab->grabtype == GRABTYPE_XI2) ?
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(unsigned int)XIAnyModifier :
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(unsigned int)AnyModifier;
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if (pFirstGrab->grabtype != pSecondGrab->grabtype)
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return FALSE;
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if (pFirstGrab->device != pSecondGrab->device ||
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(pFirstGrab->modifierDevice != pSecondGrab->modifierDevice) ||
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(pFirstGrab->type != pSecondGrab->type))
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return FALSE;
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if (!(DetailSupersedesSecond(pFirstGrab->detail,
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pSecondGrab->detail,
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(unsigned int)AnyKey) &&
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DetailSupersedesSecond(pSecondGrab->detail,
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pFirstGrab->detail,
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(unsigned int)AnyKey)))
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return FALSE;
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if (!(DetailSupersedesSecond(pFirstGrab->modifiersDetail,
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pSecondGrab->modifiersDetail,
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any_modifier) &&
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DetailSupersedesSecond(pSecondGrab->modifiersDetail,
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pFirstGrab->modifiersDetail,
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any_modifier)))
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return FALSE;
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return TRUE;
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}
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/**
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* Prepend the new grab to the list of passive grabs on the window.
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* Any previously existing grab that matches the new grab will be removed.
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* Adding a new grab that would override another client's grab will result in
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* a BadAccess.
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*
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* @return Success or X error code on failure.
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*/
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int
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AddPassiveGrabToList(ClientPtr client, GrabPtr pGrab)
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{
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GrabPtr grab;
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Mask access_mode = DixGrabAccess;
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int rc;
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for (grab = wPassiveGrabs(pGrab->window); grab; grab = grab->next)
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{
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if (GrabMatchesSecond(pGrab, grab, FALSE))
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{
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if (CLIENT_BITS(pGrab->resource) != CLIENT_BITS(grab->resource))
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{
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FreeGrab(pGrab);
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return BadAccess;
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}
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}
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}
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if (pGrab->keyboardMode == GrabModeSync||pGrab->pointerMode == GrabModeSync)
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access_mode |= DixFreezeAccess;
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rc = XaceHook(XACE_DEVICE_ACCESS, client, pGrab->device, access_mode);
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if (rc != Success)
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return rc;
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/* Remove all grabs that match the new one exactly */
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for (grab = wPassiveGrabs(pGrab->window); grab; grab = grab->next)
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{
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if (GrabsAreIdentical(pGrab, grab))
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{
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DeletePassiveGrabFromList(grab);
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break;
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}
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}
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if (!pGrab->window->optional && !MakeWindowOptional (pGrab->window))
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{
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FreeGrab(pGrab);
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return BadAlloc;
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}
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pGrab->next = pGrab->window->optional->passiveGrabs;
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pGrab->window->optional->passiveGrabs = pGrab;
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if (AddResource(pGrab->resource, RT_PASSIVEGRAB, (pointer)pGrab))
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return Success;
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return BadAlloc;
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}
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/* the following is kinda complicated, because we need to be able to back out
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* if any allocation fails
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*/
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Bool
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DeletePassiveGrabFromList(GrabPtr pMinuendGrab)
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{
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GrabPtr grab;
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GrabPtr *deletes, *adds;
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Mask ***updates, **details;
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int i, ndels, nadds, nups;
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Bool ok;
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unsigned int any_modifier;
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unsigned int any_key;
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#define UPDATE(mask,exact) \
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if (!(details[nups] = DeleteDetailFromMask(mask, exact))) \
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ok = FALSE; \
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else \
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updates[nups++] = &(mask)
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i = 0;
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for (grab = wPassiveGrabs(pMinuendGrab->window); grab; grab = grab->next)
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i++;
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if (!i)
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return TRUE;
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deletes = xalloc(i * sizeof(GrabPtr));
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adds = xalloc(i * sizeof(GrabPtr));
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updates = xalloc(i * sizeof(Mask **));
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details = xalloc(i * sizeof(Mask *));
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if (!deletes || !adds || !updates || !details)
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{
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if (details) xfree(details);
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if (updates) xfree(updates);
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if (adds) xfree(adds);
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if (deletes) xfree(deletes);
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return FALSE;
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}
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any_modifier = (pMinuendGrab->grabtype == GRABTYPE_XI2) ?
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(unsigned int)XIAnyModifier : (unsigned int)AnyModifier;
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any_key = (pMinuendGrab->grabtype == GRABTYPE_XI2) ?
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(unsigned int)XIAnyKeysym : (unsigned int)AnyKey;
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ndels = nadds = nups = 0;
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ok = TRUE;
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for (grab = wPassiveGrabs(pMinuendGrab->window);
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grab && ok;
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grab = grab->next)
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{
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if ((CLIENT_BITS(grab->resource) != CLIENT_BITS(pMinuendGrab->resource)) ||
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!GrabMatchesSecond(grab, pMinuendGrab,
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(grab->grabtype == GRABTYPE_CORE)))
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continue;
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if (GrabSupersedesSecond(pMinuendGrab, grab))
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{
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deletes[ndels++] = grab;
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}
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else if ((grab->detail.exact == any_key)
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&& (grab->modifiersDetail.exact != any_modifier))
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{
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UPDATE(grab->detail.pMask, pMinuendGrab->detail.exact);
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}
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else if ((grab->modifiersDetail.exact == any_modifier)
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&& (grab->detail.exact != any_key))
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{
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UPDATE(grab->modifiersDetail.pMask,
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pMinuendGrab->modifiersDetail.exact);
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}
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else if ((pMinuendGrab->detail.exact != any_key)
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&& (pMinuendGrab->modifiersDetail.exact != any_modifier))
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{
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GrabPtr pNewGrab;
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GrabParameters param;
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UPDATE(grab->detail.pMask, pMinuendGrab->detail.exact);
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memset(¶m, 0, sizeof(param));
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param.ownerEvents = grab->ownerEvents;
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param.this_device_mode = grab->keyboardMode;
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param.other_devices_mode = grab->pointerMode;
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param.modifiers = any_modifier;
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pNewGrab = CreateGrab(CLIENT_ID(grab->resource), grab->device,
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grab->modifierDevice, grab->window,
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grab->grabtype,
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(GrabMask*)&grab->eventMask,
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¶m, (int)grab->type,
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pMinuendGrab->detail.exact,
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grab->confineTo, grab->cursor);
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if (!pNewGrab)
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ok = FALSE;
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else if (!(pNewGrab->modifiersDetail.pMask =
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DeleteDetailFromMask(grab->modifiersDetail.pMask,
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pMinuendGrab->modifiersDetail.exact))
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||
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(!pNewGrab->window->optional &&
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!MakeWindowOptional(pNewGrab->window)))
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{
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FreeGrab(pNewGrab);
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ok = FALSE;
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}
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else if (!AddResource(pNewGrab->resource, RT_PASSIVEGRAB,
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(pointer)pNewGrab))
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ok = FALSE;
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else
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adds[nadds++] = pNewGrab;
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}
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else if (pMinuendGrab->detail.exact == any_key)
|
|
{
|
|
UPDATE(grab->modifiersDetail.pMask,
|
|
pMinuendGrab->modifiersDetail.exact);
|
|
}
|
|
else
|
|
{
|
|
UPDATE(grab->detail.pMask, pMinuendGrab->detail.exact);
|
|
}
|
|
}
|
|
|
|
if (!ok)
|
|
{
|
|
for (i = 0; i < nadds; i++)
|
|
FreeResource(adds[i]->resource, RT_NONE);
|
|
for (i = 0; i < nups; i++)
|
|
xfree(details[i]);
|
|
}
|
|
else
|
|
{
|
|
for (i = 0; i < ndels; i++)
|
|
FreeResource(deletes[i]->resource, RT_NONE);
|
|
for (i = 0; i < nadds; i++)
|
|
{
|
|
grab = adds[i];
|
|
grab->next = grab->window->optional->passiveGrabs;
|
|
grab->window->optional->passiveGrabs = grab;
|
|
}
|
|
for (i = 0; i < nups; i++)
|
|
{
|
|
xfree(*updates[i]);
|
|
*updates[i] = details[i];
|
|
}
|
|
}
|
|
xfree(details);
|
|
xfree(updates);
|
|
xfree(adds);
|
|
xfree(deletes);
|
|
return ok;
|
|
|
|
#undef UPDATE
|
|
}
|