636 lines
19 KiB
C
636 lines
19 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 in
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all copies or substantial portions of the Software.
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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 THE
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OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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Except as contained in this notice, the name of The Open Group shall not be
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used in advertising or otherwise to promote the sale, use or other dealings
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in this Software without prior written authorization 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 <X11/Xproto.h>
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#include "windowstr.h"
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#include "propertyst.h"
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#include "dixstruct.h"
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#include "dispatch.h"
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#include "swaprep.h"
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#include "xace.h"
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/*****************************************************************
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* Property Stuff
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*
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* dixLookupProperty, dixChangeProperty, DeleteProperty
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*
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* Properties belong to windows. The list of properties should not be
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* traversed directly. Instead, use the three functions listed above.
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*
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*****************************************************************/
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#ifdef notdef
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static void
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PrintPropertys(WindowPtr pWin)
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{
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PropertyPtr pProp;
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int j;
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pProp = pWin->userProps;
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while (pProp) {
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ErrorF("[dix] %x %x\n", pProp->propertyName, pProp->type);
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ErrorF("[dix] property format: %d\n", pProp->format);
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ErrorF("[dix] property data: \n");
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for (j = 0; j < (pProp->format / 8) * pProp->size; j++)
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ErrorF("[dix] %c\n", pProp->data[j]);
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pProp = pProp->next;
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}
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}
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#endif
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int
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dixLookupProperty(PropertyPtr *result, WindowPtr pWin, Atom propertyName,
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ClientPtr client, Mask access_mode)
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{
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PropertyPtr pProp;
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int rc = BadMatch;
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client->errorValue = propertyName;
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for (pProp = wUserProps(pWin); pProp; pProp = pProp->next)
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if (pProp->propertyName == propertyName)
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break;
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if (pProp)
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rc = XaceHookPropertyAccess(client, pWin, &pProp, access_mode);
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*result = pProp;
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return rc;
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}
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CallbackListPtr PropertyStateCallback;
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static void
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deliverPropertyNotifyEvent(WindowPtr pWin, int state, PropertyPtr pProp)
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{
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xEvent event;
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PropertyStateRec rec = {
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.win = pWin,
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.prop = pProp,
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.state = state
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};
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UpdateCurrentTimeIf();
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event = (xEvent) {
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.u.property.window = pWin->drawable.id,
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.u.property.state = state,
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.u.property.atom = pProp->propertyName,
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.u.property.time = currentTime.milliseconds,
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};
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event.u.u.type = PropertyNotify;
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CallCallbacks(&PropertyStateCallback, &rec);
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DeliverEvents(pWin, &event, 1, (WindowPtr) NULL);
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}
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int
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ProcRotateProperties(ClientPtr client)
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{
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int i, j, delta, rc;
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REQUEST(xRotatePropertiesReq);
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WindowPtr pWin;
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Atom *atoms;
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PropertyPtr *props; /* array of pointer */
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PropertyPtr pProp, saved;
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REQUEST_FIXED_SIZE(xRotatePropertiesReq, stuff->nAtoms << 2);
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UpdateCurrentTime();
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rc = dixLookupWindow(&pWin, stuff->window, client, DixSetPropAccess);
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if (rc != Success || stuff->nAtoms <= 0)
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return rc;
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atoms = (Atom *) &stuff[1];
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props = xallocarray(stuff->nAtoms, sizeof(PropertyPtr));
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saved = xallocarray(stuff->nAtoms, sizeof(PropertyRec));
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if (!props || !saved) {
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rc = BadAlloc;
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goto out;
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}
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for (i = 0; i < stuff->nAtoms; i++) {
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if (!ValidAtom(atoms[i])) {
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rc = BadAtom;
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client->errorValue = atoms[i];
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goto out;
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}
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for (j = i + 1; j < stuff->nAtoms; j++)
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if (atoms[j] == atoms[i]) {
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rc = BadMatch;
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goto out;
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}
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rc = dixLookupProperty(&pProp, pWin, atoms[i], client,
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DixReadAccess | DixWriteAccess);
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if (rc != Success)
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goto out;
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props[i] = pProp;
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saved[i] = *pProp;
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}
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delta = stuff->nPositions;
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/* If the rotation is a complete 360 degrees, then moving the properties
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around and generating PropertyNotify events should be skipped. */
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if (abs(delta) % stuff->nAtoms) {
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while (delta < 0) /* faster if abs value is small */
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delta += stuff->nAtoms;
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for (i = 0; i < stuff->nAtoms; i++) {
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j = (i + delta) % stuff->nAtoms;
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deliverPropertyNotifyEvent(pWin, PropertyNewValue, props[i]);
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/* Preserve name and devPrivates */
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props[j]->type = saved[i].type;
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props[j]->format = saved[i].format;
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props[j]->size = saved[i].size;
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props[j]->data = saved[i].data;
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}
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}
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out:
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free(saved);
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free(props);
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return rc;
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}
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int
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ProcChangeProperty(ClientPtr client)
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{
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WindowPtr pWin;
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char format, mode;
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unsigned long len;
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int sizeInBytes, totalSize, err;
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REQUEST(xChangePropertyReq);
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REQUEST_AT_LEAST_SIZE(xChangePropertyReq);
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UpdateCurrentTime();
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format = stuff->format;
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mode = stuff->mode;
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if ((mode != PropModeReplace) && (mode != PropModeAppend) &&
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(mode != PropModePrepend)) {
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client->errorValue = mode;
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return BadValue;
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}
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if ((format != 8) && (format != 16) && (format != 32)) {
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client->errorValue = format;
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return BadValue;
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}
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len = stuff->nUnits;
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if (len > bytes_to_int32(0xffffffff - sizeof(xChangePropertyReq)))
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return BadLength;
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sizeInBytes = format >> 3;
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totalSize = len * sizeInBytes;
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REQUEST_FIXED_SIZE(xChangePropertyReq, totalSize);
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err = dixLookupWindow(&pWin, stuff->window, client, DixSetPropAccess);
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if (err != Success)
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return err;
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if (!ValidAtom(stuff->property)) {
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client->errorValue = stuff->property;
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return BadAtom;
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}
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if (!ValidAtom(stuff->type)) {
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client->errorValue = stuff->type;
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return BadAtom;
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}
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err = dixChangeWindowProperty(client, pWin, stuff->property, stuff->type,
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(int) format, (int) mode, len, &stuff[1],
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TRUE);
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if (err != Success)
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return err;
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else
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return Success;
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}
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int
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dixChangeWindowProperty(ClientPtr pClient, WindowPtr pWin, Atom property,
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Atom type, int format, int mode, unsigned long len,
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void *value, Bool sendevent)
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{
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PropertyPtr pProp;
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PropertyRec savedProp;
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int sizeInBytes, totalSize, rc;
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unsigned char *data;
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Mask access_mode;
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sizeInBytes = format >> 3;
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totalSize = len * sizeInBytes;
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access_mode = (mode == PropModeReplace) ? DixWriteAccess : DixBlendAccess;
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/* first see if property already exists */
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rc = dixLookupProperty(&pProp, pWin, property, pClient, access_mode);
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if (rc == BadMatch) { /* just add to list */
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if (!pWin->optional && !MakeWindowOptional(pWin))
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return BadAlloc;
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pProp = dixAllocateObjectWithPrivates(PropertyRec, PRIVATE_PROPERTY);
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if (!pProp)
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return BadAlloc;
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data = malloc(totalSize);
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if (!data && len) {
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dixFreeObjectWithPrivates(pProp, PRIVATE_PROPERTY);
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return BadAlloc;
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}
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memcpy(data, value, totalSize);
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pProp->propertyName = property;
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pProp->type = type;
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pProp->format = format;
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pProp->data = data;
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pProp->size = len;
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rc = XaceHookPropertyAccess(pClient, pWin, &pProp,
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DixCreateAccess | DixWriteAccess);
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if (rc != Success) {
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free(data);
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dixFreeObjectWithPrivates(pProp, PRIVATE_PROPERTY);
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pClient->errorValue = property;
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return rc;
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}
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pProp->next = pWin->optional->userProps;
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pWin->optional->userProps = pProp;
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}
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else if (rc == Success) {
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/* To append or prepend to a property the request format and type
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must match those of the already defined property. The
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existing format and type are irrelevant when using the mode
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"PropModeReplace" since they will be written over. */
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if ((format != pProp->format) && (mode != PropModeReplace))
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return BadMatch;
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if ((pProp->type != type) && (mode != PropModeReplace))
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return BadMatch;
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/* save the old values for later */
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savedProp = *pProp;
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if (mode == PropModeReplace) {
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data = malloc(totalSize);
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if (!data && len)
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return BadAlloc;
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memcpy(data, value, totalSize);
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pProp->data = data;
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pProp->size = len;
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pProp->type = type;
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pProp->format = format;
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}
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else if (len == 0) {
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/* do nothing */
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}
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else if (mode == PropModeAppend) {
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data = xallocarray(pProp->size + len, sizeInBytes);
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if (!data)
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return BadAlloc;
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memcpy(data, pProp->data, pProp->size * sizeInBytes);
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memcpy(data + pProp->size * sizeInBytes, value, totalSize);
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pProp->data = data;
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pProp->size += len;
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}
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else if (mode == PropModePrepend) {
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data = xallocarray(len + pProp->size, sizeInBytes);
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if (!data)
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return BadAlloc;
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memcpy(data + totalSize, pProp->data, pProp->size * sizeInBytes);
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memcpy(data, value, totalSize);
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pProp->data = data;
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pProp->size += len;
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}
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/* Allow security modules to check the new content */
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access_mode |= DixPostAccess;
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rc = XaceHookPropertyAccess(pClient, pWin, &pProp, access_mode);
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if (rc == Success) {
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if (savedProp.data != pProp->data)
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free(savedProp.data);
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}
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else {
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if (savedProp.data != pProp->data)
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free(pProp->data);
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*pProp = savedProp;
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return rc;
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}
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}
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else
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return rc;
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if (sendevent)
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deliverPropertyNotifyEvent(pWin, PropertyNewValue, pProp);
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return Success;
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}
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int
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DeleteProperty(ClientPtr client, WindowPtr pWin, Atom propName)
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{
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PropertyPtr pProp, prevProp;
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int rc;
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rc = dixLookupProperty(&pProp, pWin, propName, client, DixDestroyAccess);
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if (rc == BadMatch)
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return Success; /* Succeed if property does not exist */
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if (rc == Success) {
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if (pWin->optional->userProps == pProp) {
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/* Takes care of head */
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if (!(pWin->optional->userProps = pProp->next))
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CheckWindowOptionalNeed(pWin);
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}
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else {
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/* Need to traverse to find the previous element */
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prevProp = pWin->optional->userProps;
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while (prevProp->next != pProp)
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prevProp = prevProp->next;
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prevProp->next = pProp->next;
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}
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deliverPropertyNotifyEvent(pWin, PropertyDelete, pProp);
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free(pProp->data);
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dixFreeObjectWithPrivates(pProp, PRIVATE_PROPERTY);
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}
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return rc;
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}
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void
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DeleteAllWindowProperties(WindowPtr pWin)
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{
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PropertyPtr pProp, pNextProp;
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pProp = wUserProps(pWin);
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while (pProp) {
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deliverPropertyNotifyEvent(pWin, PropertyDelete, pProp);
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pNextProp = pProp->next;
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free(pProp->data);
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dixFreeObjectWithPrivates(pProp, PRIVATE_PROPERTY);
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pProp = pNextProp;
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}
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if (pWin->optional)
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pWin->optional->userProps = NULL;
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}
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static int
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NullPropertyReply(ClientPtr client, ATOM propertyType, int format)
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{
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xGetPropertyReply reply = {
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.type = X_Reply,
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.format = format,
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.sequenceNumber = client->sequence,
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.length = 0,
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.propertyType = propertyType,
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.bytesAfter = 0,
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.nItems = 0
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};
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WriteReplyToClient(client, sizeof(xGenericReply), &reply);
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return Success;
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}
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/*****************
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* GetProperty
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* If type Any is specified, returns the property from the specified
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* window regardless of its type. If a type is specified, returns the
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* property only if its type equals the specified type.
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* If delete is True and a property is returned, the property is also
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* deleted from the window and a PropertyNotify event is generated on the
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* window.
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*****************/
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int
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ProcGetProperty(ClientPtr client)
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{
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PropertyPtr pProp, prevProp;
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unsigned long n, len, ind;
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int rc;
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WindowPtr pWin;
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xGetPropertyReply reply;
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Mask win_mode = DixGetPropAccess, prop_mode = DixReadAccess;
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REQUEST(xGetPropertyReq);
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REQUEST_SIZE_MATCH(xGetPropertyReq);
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if (stuff->delete) {
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UpdateCurrentTime();
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win_mode |= DixSetPropAccess;
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prop_mode |= DixDestroyAccess;
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}
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rc = dixLookupWindow(&pWin, stuff->window, client, win_mode);
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if (rc != Success)
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return rc;
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if (!ValidAtom(stuff->property)) {
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client->errorValue = stuff->property;
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return BadAtom;
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}
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if ((stuff->delete != xTrue) && (stuff->delete != xFalse)) {
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client->errorValue = stuff->delete;
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return BadValue;
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}
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if ((stuff->type != AnyPropertyType) && !ValidAtom(stuff->type)) {
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client->errorValue = stuff->type;
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return BadAtom;
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}
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rc = dixLookupProperty(&pProp, pWin, stuff->property, client, prop_mode);
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if (rc == BadMatch)
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return NullPropertyReply(client, None, 0);
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else if (rc != Success)
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return rc;
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/* If the request type and actual type don't match. Return the
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property information, but not the data. */
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if (((stuff->type != pProp->type) && (stuff->type != AnyPropertyType))
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) {
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reply = (xGetPropertyReply) {
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.type = X_Reply,
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.sequenceNumber = client->sequence,
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.bytesAfter = pProp->size,
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.format = pProp->format,
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.length = 0,
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.nItems = 0,
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.propertyType = pProp->type
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};
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WriteReplyToClient(client, sizeof(xGenericReply), &reply);
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return Success;
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}
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/*
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* Return type, format, value to client
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*/
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n = (pProp->format / 8) * pProp->size; /* size (bytes) of prop */
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ind = stuff->longOffset << 2;
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/* If longOffset is invalid such that it causes "len" to
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be negative, it's a value error. */
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if (n < ind) {
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client->errorValue = stuff->longOffset;
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return BadValue;
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}
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len = min(n - ind, 4 * stuff->longLength);
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reply = (xGetPropertyReply) {
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.type = X_Reply,
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.sequenceNumber = client->sequence,
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.bytesAfter = n - (ind + len),
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.format = pProp->format,
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.length = bytes_to_int32(len),
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.nItems = len / (pProp->format / 8),
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.propertyType = pProp->type
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};
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if (stuff->delete && (reply.bytesAfter == 0))
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deliverPropertyNotifyEvent(pWin, PropertyDelete, pProp);
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WriteReplyToClient(client, sizeof(xGenericReply), &reply);
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if (len) {
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switch (reply.format) {
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case 32:
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client->pSwapReplyFunc = (ReplySwapPtr) CopySwap32Write;
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break;
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case 16:
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client->pSwapReplyFunc = (ReplySwapPtr) CopySwap16Write;
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break;
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default:
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client->pSwapReplyFunc = (ReplySwapPtr) WriteToClient;
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break;
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}
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WriteSwappedDataToClient(client, len, (char *) pProp->data + ind);
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}
|
|
|
|
if (stuff->delete && (reply.bytesAfter == 0)) {
|
|
/* Delete the Property */
|
|
if (pWin->optional->userProps == pProp) {
|
|
/* Takes care of head */
|
|
if (!(pWin->optional->userProps = pProp->next))
|
|
CheckWindowOptionalNeed(pWin);
|
|
}
|
|
else {
|
|
/* Need to traverse to find the previous element */
|
|
prevProp = pWin->optional->userProps;
|
|
while (prevProp->next != pProp)
|
|
prevProp = prevProp->next;
|
|
prevProp->next = pProp->next;
|
|
}
|
|
|
|
free(pProp->data);
|
|
dixFreeObjectWithPrivates(pProp, PRIVATE_PROPERTY);
|
|
}
|
|
return Success;
|
|
}
|
|
|
|
int
|
|
ProcListProperties(ClientPtr client)
|
|
{
|
|
Atom *pAtoms = NULL, *temppAtoms;
|
|
xListPropertiesReply xlpr;
|
|
int rc, numProps = 0;
|
|
WindowPtr pWin;
|
|
PropertyPtr pProp, realProp;
|
|
|
|
REQUEST(xResourceReq);
|
|
|
|
REQUEST_SIZE_MATCH(xResourceReq);
|
|
rc = dixLookupWindow(&pWin, stuff->id, client, DixListPropAccess);
|
|
if (rc != Success)
|
|
return rc;
|
|
|
|
for (pProp = wUserProps(pWin); pProp; pProp = pProp->next)
|
|
numProps++;
|
|
|
|
if (numProps && !(pAtoms = xallocarray(numProps, sizeof(Atom))))
|
|
return BadAlloc;
|
|
|
|
numProps = 0;
|
|
temppAtoms = pAtoms;
|
|
for (pProp = wUserProps(pWin); pProp; pProp = pProp->next) {
|
|
realProp = pProp;
|
|
rc = XaceHookPropertyAccess(client, pWin, &realProp, DixGetAttrAccess);
|
|
if (rc == Success && realProp == pProp) {
|
|
*temppAtoms++ = pProp->propertyName;
|
|
numProps++;
|
|
}
|
|
}
|
|
|
|
xlpr = (xListPropertiesReply) {
|
|
.type = X_Reply,
|
|
.sequenceNumber = client->sequence,
|
|
.length = bytes_to_int32(numProps * sizeof(Atom)),
|
|
.nProperties = numProps
|
|
};
|
|
WriteReplyToClient(client, sizeof(xGenericReply), &xlpr);
|
|
if (numProps) {
|
|
client->pSwapReplyFunc = (ReplySwapPtr) Swap32Write;
|
|
WriteSwappedDataToClient(client, numProps * sizeof(Atom), pAtoms);
|
|
}
|
|
free(pAtoms);
|
|
return Success;
|
|
}
|
|
|
|
int
|
|
ProcDeleteProperty(ClientPtr client)
|
|
{
|
|
WindowPtr pWin;
|
|
|
|
REQUEST(xDeletePropertyReq);
|
|
int result;
|
|
|
|
REQUEST_SIZE_MATCH(xDeletePropertyReq);
|
|
UpdateCurrentTime();
|
|
result = dixLookupWindow(&pWin, stuff->window, client, DixSetPropAccess);
|
|
if (result != Success)
|
|
return result;
|
|
if (!ValidAtom(stuff->property)) {
|
|
client->errorValue = stuff->property;
|
|
return BadAtom;
|
|
}
|
|
|
|
return DeleteProperty(client, pWin, stuff->property);
|
|
}
|