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+/**************************************************************************/
+/* */
+/* Copyright (c) 2001, 2007 NoMachine, http://www.nomachine.com/. */
+/* */
+/* NXAGENT, NX protocol compression and NX extensions to this software */
+/* are copyright of NoMachine. Redistribution and use of the present */
+/* software is allowed according to terms specified in the file LICENSE */
+/* which comes in the source distribution. */
+/* */
+/* Check http://www.nomachine.com/licensing.html for applicability. */
+/* */
+/* NX and NoMachine are trademarks of NoMachine S.r.l. */
+/* */
+/* All rights reserved. */
+/* */
+/**************************************************************************/
+
+/* $XFree86: xc/programs/Xserver/dix/property.c,v 3.12 2002/02/19 11:09:22 alanh Exp $ */
+/***********************************************************
+
+Copyright 1987, 1998 The Open Group
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation.
+
+The above copyright notice and this permission notice 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
+OPEN GROUP 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.
+
+Except as contained in this notice, the name of The Open Group shall not be
+used in advertising or otherwise to promote the sale, use or other dealings
+in this Software without prior written authorization from The Open Group.
+
+
+Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
+
+ All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and its
+documentation for any purpose and without fee is hereby granted,
+provided that the above copyright notice appear in all copies and that
+both that copyright notice and this permission notice appear in
+supporting documentation, and that the name of Digital not be
+used in advertising or publicity pertaining to distribution of the
+software without specific, written prior permission.
+
+DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
+ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
+DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
+ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+SOFTWARE.
+
+******************************************************************/
+/* $Xorg: property.c,v 1.4 2001/02/09 02:04:40 xorgcvs Exp $ */
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include <X11/X.h>
+#define NEED_REPLIES
+#define NEED_EVENTS
+#include <X11/Xproto.h>
+#include "windowstr.h"
+#include "propertyst.h"
+#include "dixstruct.h"
+#include "../../dix/dispatch.h"
+#include "swaprep.h"
+#ifdef XCSECURITY
+#define _SECURITY_SERVER
+#include <X11/extensions/security.h>
+#endif
+#ifdef LBX
+#include "lbxserve.h"
+#include "lbxtags.h"
+#endif
+
+#include "Options.h"
+#include "Rootless.h"
+#include "Client.h"
+
+#if defined(LBX) || defined(LBX_COMPAT)
+#if 0 /* no header in X11 environment, not used in X11 environment */
+int fWriteToClient(ClientPtr client, int len, char *buf)
+{
+ return WriteToClient(client, len, buf);
+}
+#endif
+#endif
+
+/*****************************************************************
+ * Property Stuff
+ *
+ * ChangeProperty, DeleteProperty, GetProperties,
+ * ListProperties
+ *
+ * Properties below to windows. A allocate slots each time
+ * a property is added. No fancy searching done.
+ *
+ *****************************************************************/
+
+#ifdef notdef
+static void
+PrintPropertys(WindowPtr pWin)
+{
+ PropertyPtr pProp;
+ register int j;
+
+ pProp = pWin->userProps;
+ while (pProp)
+ {
+ ErrorF( "%x %x\n", pProp->propertyName, pProp->type);
+ ErrorF("property format: %d\n", pProp->format);
+ ErrorF("property data: \n");
+ for (j=0; j<(pProp->format/8)*pProp->size; j++)
+ ErrorF("%c\n", pProp->data[j]);
+ pProp = pProp->next;
+ }
+}
+#endif
+
+int
+ProcRotateProperties(ClientPtr client)
+{
+ int i, j, delta;
+ REQUEST(xRotatePropertiesReq);
+ WindowPtr pWin;
+ register Atom * atoms;
+ PropertyPtr * props; /* array of pointer */
+ PropertyPtr pProp;
+ xEvent event;
+
+ REQUEST_FIXED_SIZE(xRotatePropertiesReq, stuff->nAtoms << 2);
+ UpdateCurrentTime();
+ pWin = (WindowPtr) SecurityLookupWindow(stuff->window, client,
+ SecurityWriteAccess);
+ if (!pWin)
+ return(BadWindow);
+ if (!stuff->nAtoms)
+ return(Success);
+ atoms = (Atom *) & stuff[1];
+ props = (PropertyPtr *)ALLOCATE_LOCAL(stuff->nAtoms * sizeof(PropertyPtr));
+ if (!props)
+ return(BadAlloc);
+ for (i = 0; i < stuff->nAtoms; i++)
+ {
+#ifdef XCSECURITY
+ char action = SecurityCheckPropertyAccess(client, pWin, atoms[i],
+ SecurityReadAccess|SecurityWriteAccess);
+#endif
+ if (!ValidAtom(atoms[i])
+#ifdef XCSECURITY
+ || (SecurityErrorOperation == action)
+#endif
+ )
+ {
+ DEALLOCATE_LOCAL(props);
+ client->errorValue = atoms[i];
+ return BadAtom;
+ }
+#ifdef XCSECURITY
+ if (SecurityIgnoreOperation == action)
+ {
+ DEALLOCATE_LOCAL(props);
+ return Success;
+ }
+#endif
+ for (j = i + 1; j < stuff->nAtoms; j++)
+ if (atoms[j] == atoms[i])
+ {
+ DEALLOCATE_LOCAL(props);
+ return BadMatch;
+ }
+ pProp = wUserProps (pWin);
+ while (pProp)
+ {
+ if (pProp->propertyName == atoms[i])
+ goto found;
+ pProp = pProp->next;
+ }
+ DEALLOCATE_LOCAL(props);
+ return BadMatch;
+found:
+ props[i] = pProp;
+ }
+ delta = stuff->nPositions;
+
+ /* If the rotation is a complete 360 degrees, then moving the properties
+ around and generating PropertyNotify events should be skipped. */
+
+ if ( (stuff->nAtoms != 0) && (abs(delta) % stuff->nAtoms) != 0 )
+ {
+ while (delta < 0) /* faster if abs value is small */
+ delta += stuff->nAtoms;
+ for (i = 0; i < stuff->nAtoms; i++)
+ {
+ /* Generate a PropertyNotify event for each property whose value
+ is changed in the order in which they appear in the request. */
+
+ event.u.u.type = PropertyNotify;
+ event.u.property.window = pWin->drawable.id;
+ event.u.property.state = PropertyNewValue;
+ event.u.property.atom = props[i]->propertyName;
+ event.u.property.time = currentTime.milliseconds;
+ DeliverEvents(pWin, &event, 1, (WindowPtr)NULL);
+
+ props[i]->propertyName = atoms[(i + delta) % stuff->nAtoms];
+ }
+ }
+ DEALLOCATE_LOCAL(props);
+ return Success;
+}
+
+int
+ProcChangeProperty(ClientPtr client)
+{
+ WindowPtr pWin;
+ char format, mode;
+ unsigned long len;
+ int sizeInBytes;
+ int totalSize;
+ int err;
+ REQUEST(xChangePropertyReq);
+
+ REQUEST_AT_LEAST_SIZE(xChangePropertyReq);
+ UpdateCurrentTime();
+ format = stuff->format;
+ mode = stuff->mode;
+ if ((mode != PropModeReplace) && (mode != PropModeAppend) &&
+ (mode != PropModePrepend))
+ {
+ client->errorValue = mode;
+ return BadValue;
+ }
+ if ((format != 8) && (format != 16) && (format != 32))
+ {
+ client->errorValue = format;
+ return BadValue;
+ }
+ len = stuff->nUnits;
+ if (len > ((0xffffffff - sizeof(xChangePropertyReq)) >> 2))
+ return BadLength;
+ sizeInBytes = format>>3;
+ totalSize = len * sizeInBytes;
+ REQUEST_FIXED_SIZE(xChangePropertyReq, totalSize);
+
+#ifdef NXAGENT_CLIPBOARD
+ {
+ extern WindowPtr nxagentGetClipboardWindow(Atom, WindowPtr);
+
+ pWin = nxagentGetClipboardWindow(stuff->property, NULL);
+ }
+
+ if (pWin == NULL)
+#endif
+ pWin = (WindowPtr)SecurityLookupWindow(stuff->window, client,
+ SecurityWriteAccess);
+ if (!pWin)
+ return(BadWindow);
+ if (!ValidAtom(stuff->property))
+ {
+ client->errorValue = stuff->property;
+ return(BadAtom);
+ }
+ if (!ValidAtom(stuff->type))
+ {
+ client->errorValue = stuff->type;
+ return(BadAtom);
+ }
+
+#ifdef XCSECURITY
+ switch (SecurityCheckPropertyAccess(client, pWin, stuff->property,
+ SecurityWriteAccess))
+ {
+ case SecurityErrorOperation:
+ client->errorValue = stuff->property;
+ return BadAtom;
+ case SecurityIgnoreOperation:
+ return Success;
+ }
+#endif
+
+#ifdef NXAGENT_ARTSD
+ {
+ /* Do not process MCOPGLOBALS property changes,
+ they are already set reflecting the server side settings.
+ Just return success.
+ */
+ extern Atom mcop_local_atom;
+ if (stuff->property == mcop_local_atom)
+ return client->noClientException;
+ }
+#endif
+
+#ifdef LBX
+ err = LbxChangeWindowProperty(client, pWin, stuff->property, stuff->type,
+ (int)format, (int)mode, len, TRUE, (pointer)&stuff[1], TRUE, NULL);
+#else
+ err = ChangeWindowProperty(pWin, stuff->property, stuff->type, (int)format,
+ (int)mode, len, (pointer)&stuff[1], TRUE);
+#endif
+ if (err != Success)
+ return err;
+ else
+ {
+ if (nxagentOption(Rootless) == 1)
+ {
+ nxagentExportProperty(pWin, stuff->property, stuff->type, (int) format,
+ (int) mode, len, (pointer) &stuff[1]);
+ }
+
+ nxagentGuessClientHint(client, stuff->property, (char *) &stuff[1]);
+
+ nxagentGuessShadowHint(client, stuff->property);
+
+ return client->noClientException;
+ }
+}
+
+int
+ChangeWindowProperty(WindowPtr pWin, Atom property, Atom type, int format,
+ int mode, unsigned long len, pointer value,
+ Bool sendevent)
+{
+#ifdef LBX
+ return LbxChangeWindowProperty(NULL, pWin, property, type,
+ format, mode, len, TRUE, value,
+ sendevent, NULL);
+#else
+ PropertyPtr pProp;
+ xEvent event;
+ int sizeInBytes;
+ int totalSize;
+ pointer data;
+
+ sizeInBytes = format>>3;
+ totalSize = len * sizeInBytes;
+
+ /* first see if property already exists */
+
+ pProp = wUserProps (pWin);
+ while (pProp)
+ {
+ if (pProp->propertyName == property)
+ break;
+ pProp = pProp->next;
+ }
+ if (!pProp) /* just add to list */
+ {
+ if (!pWin->optional && !MakeWindowOptional (pWin))
+ return(BadAlloc);
+ pProp = (PropertyPtr)xalloc(sizeof(PropertyRec));
+ if (!pProp)
+ return(BadAlloc);
+ data = (pointer)xalloc(totalSize);
+ if (!data && len)
+ {
+ xfree(pProp);
+ return(BadAlloc);
+ }
+ pProp->propertyName = property;
+ pProp->type = type;
+ pProp->format = format;
+ pProp->data = data;
+ if (len)
+ memmove((char *)data, (char *)value, totalSize);
+ pProp->size = len;
+ pProp->next = pWin->optional->userProps;
+ pWin->optional->userProps = pProp;
+ }
+ else
+ {
+ /* To append or prepend to a property the request format and type
+ must match those of the already defined property. The
+ existing format and type are irrelevant when using the mode
+ "PropModeReplace" since they will be written over. */
+
+ if ((format != pProp->format) && (mode != PropModeReplace))
+ return(BadMatch);
+ if ((pProp->type != type) && (mode != PropModeReplace))
+ return(BadMatch);
+ if (mode == PropModeReplace)
+ {
+ if (totalSize != pProp->size * (pProp->format >> 3))
+ {
+ data = (pointer)xrealloc(pProp->data, totalSize);
+ if (!data && len)
+ return(BadAlloc);
+ pProp->data = data;
+ }
+ if (len)
+ memmove((char *)pProp->data, (char *)value, totalSize);
+ pProp->size = len;
+ pProp->type = type;
+ pProp->format = format;
+ }
+ else if (len == 0)
+ {
+ /* do nothing */
+ }
+ else if (mode == PropModeAppend)
+ {
+ data = (pointer)xrealloc(pProp->data,
+ sizeInBytes * (len + pProp->size));
+ if (!data)
+ return(BadAlloc);
+ pProp->data = data;
+ memmove(&((char *)data)[pProp->size * sizeInBytes],
+ (char *)value,
+ totalSize);
+ pProp->size += len;
+ }
+ else if (mode == PropModePrepend)
+ {
+ data = (pointer)xalloc(sizeInBytes * (len + pProp->size));
+ if (!data)
+ return(BadAlloc);
+ memmove(&((char *)data)[totalSize], (char *)pProp->data,
+ (int)(pProp->size * sizeInBytes));
+ memmove((char *)data, (char *)value, totalSize);
+ xfree(pProp->data);
+ pProp->data = data;
+ pProp->size += len;
+ }
+ }
+ if (sendevent)
+ {
+ event.u.u.type = PropertyNotify;
+ event.u.property.window = pWin->drawable.id;
+ event.u.property.state = PropertyNewValue;
+ event.u.property.atom = pProp->propertyName;
+ event.u.property.time = currentTime.milliseconds;
+ DeliverEvents(pWin, &event, 1, (WindowPtr)NULL);
+ }
+ return(Success);
+#endif
+}
+
+int
+DeleteProperty(WindowPtr pWin, Atom propName)
+{
+ PropertyPtr pProp, prevProp;
+ xEvent event;
+
+ if (!(pProp = wUserProps (pWin)))
+ return(Success);
+ prevProp = (PropertyPtr)NULL;
+ while (pProp)
+ {
+ if (pProp->propertyName == propName)
+ break;
+ prevProp = pProp;
+ pProp = pProp->next;
+ }
+ if (pProp)
+ {
+ if (prevProp == (PropertyPtr)NULL) /* takes care of head */
+ {
+ if (!(pWin->optional->userProps = pProp->next))
+ CheckWindowOptionalNeed (pWin);
+ }
+ else
+ {
+ prevProp->next = pProp->next;
+ }
+#ifdef LBX
+ if (pProp->tag_id)
+ TagDeleteTag(pProp->tag_id);
+#endif
+ event.u.u.type = PropertyNotify;
+ event.u.property.window = pWin->drawable.id;
+ event.u.property.state = PropertyDelete;
+ event.u.property.atom = pProp->propertyName;
+ event.u.property.time = currentTime.milliseconds;
+ DeliverEvents(pWin, &event, 1, (WindowPtr)NULL);
+ xfree(pProp->data);
+ xfree(pProp);
+ }
+ return(Success);
+}
+
+void
+DeleteAllWindowProperties(WindowPtr pWin)
+{
+ PropertyPtr pProp, pNextProp;
+ xEvent event;
+
+ pProp = wUserProps (pWin);
+ while (pProp)
+ {
+#ifdef LBX
+ if (pProp->tag_id)
+ TagDeleteTag(pProp->tag_id);
+#endif
+ event.u.u.type = PropertyNotify;
+ event.u.property.window = pWin->drawable.id;
+ event.u.property.state = PropertyDelete;
+ event.u.property.atom = pProp->propertyName;
+ event.u.property.time = currentTime.milliseconds;
+ DeliverEvents(pWin, &event, 1, (WindowPtr)NULL);
+ pNextProp = pProp->next;
+ xfree(pProp->data);
+ xfree(pProp);
+ pProp = pNextProp;
+ }
+}
+
+static int
+NullPropertyReply(
+ ClientPtr client,
+ ATOM propertyType,
+ int format,
+ xGetPropertyReply *reply)
+{
+ reply->nItems = 0;
+ reply->length = 0;
+ reply->bytesAfter = 0;
+ reply->propertyType = propertyType;
+ reply->format = format;
+ WriteReplyToClient(client, sizeof(xGenericReply), reply);
+ return(client->noClientException);
+}
+
+/*****************
+ * GetProperty
+ * If type Any is specified, returns the property from the specified
+ * window regardless of its type. If a type is specified, returns the
+ * property only if its type equals the specified type.
+ * If delete is True and a property is returned, the property is also
+ * deleted from the window and a PropertyNotify event is generated on the
+ * window.
+ *****************/
+
+int
+ProcGetProperty(ClientPtr client)
+{
+ PropertyPtr pProp, prevProp;
+ unsigned long n, len, ind;
+ WindowPtr pWin;
+ xGetPropertyReply reply;
+ REQUEST(xGetPropertyReq);
+
+ REQUEST_SIZE_MATCH(xGetPropertyReq);
+ if (stuff->delete)
+ UpdateCurrentTime();
+ pWin = (WindowPtr)SecurityLookupWindow(stuff->window, client,
+ SecurityReadAccess);
+ if (!pWin)
+ return BadWindow;
+
+ if (!ValidAtom(stuff->property))
+ {
+ client->errorValue = stuff->property;
+ return(BadAtom);
+ }
+ if ((stuff->delete != xTrue) && (stuff->delete != xFalse))
+ {
+ client->errorValue = stuff->delete;
+ return(BadValue);
+ }
+ if ((stuff->type != AnyPropertyType) && !ValidAtom(stuff->type))
+ {
+ client->errorValue = stuff->type;
+ return(BadAtom);
+ }
+
+ pProp = wUserProps (pWin);
+ prevProp = (PropertyPtr)NULL;
+ while (pProp)
+ {
+ if (pProp->propertyName == stuff->property)
+ break;
+ prevProp = pProp;
+ pProp = pProp->next;
+ }
+
+ reply.type = X_Reply;
+ reply.sequenceNumber = client->sequence;
+ if (!pProp)
+ return NullPropertyReply(client, None, 0, &reply);
+
+#ifdef XCSECURITY
+ {
+ Mask access_mode = SecurityReadAccess;
+
+ if (stuff->delete)
+ access_mode |= SecurityDestroyAccess;
+ switch(SecurityCheckPropertyAccess(client, pWin, stuff->property,
+ access_mode))
+ {
+ case SecurityErrorOperation:
+ client->errorValue = stuff->property;
+ return BadAtom;;
+ case SecurityIgnoreOperation:
+ return NullPropertyReply(client, pProp->type, pProp->format,
+ &reply);
+ }
+ }
+#endif
+ /* If the request type and actual type don't match. Return the
+ property information, but not the data. */
+
+ if (((stuff->type != pProp->type) &&
+ (stuff->type != AnyPropertyType))
+ )
+ {
+ reply.bytesAfter = pProp->size;
+ reply.format = pProp->format;
+ reply.length = 0;
+ reply.nItems = 0;
+ reply.propertyType = pProp->type;
+ WriteReplyToClient(client, sizeof(xGenericReply), &reply);
+ return(Success);
+ }
+#ifdef LBX
+ /* make sure we have the current value */
+ if (pProp->tag_id && pProp->owner_pid) {
+ LbxStallPropRequest(client, pProp);
+ return client->noClientException;
+ }
+#endif
+
+/*
+ * Return type, format, value to client
+ */
+ n = (pProp->format/8) * pProp->size; /* size (bytes) of prop */
+ ind = stuff->longOffset << 2;
+
+ /* If longOffset is invalid such that it causes "len" to
+ be negative, it's a value error. */
+
+ if (n < ind)
+ {
+ client->errorValue = stuff->longOffset;
+ return BadValue;
+ }
+
+ len = min(n - ind, 4 * stuff->longLength);
+
+ reply.bytesAfter = n - (ind + len);
+ reply.format = pProp->format;
+ reply.length = (len + 3) >> 2;
+ reply.nItems = len / (pProp->format / 8 );
+ reply.propertyType = pProp->type;
+
+ if (stuff->delete && (reply.bytesAfter == 0))
+ { /* send the event */
+ xEvent event;
+
+ event.u.u.type = PropertyNotify;
+ event.u.property.window = pWin->drawable.id;
+ event.u.property.state = PropertyDelete;
+ event.u.property.atom = pProp->propertyName;
+ event.u.property.time = currentTime.milliseconds;
+ DeliverEvents(pWin, &event, 1, (WindowPtr)NULL);
+ }
+
+ WriteReplyToClient(client, sizeof(xGenericReply), &reply);
+ if (len)
+ {
+ switch (reply.format) {
+ case 32: client->pSwapReplyFunc = (ReplySwapPtr)CopySwap32Write; break;
+ case 16: client->pSwapReplyFunc = (ReplySwapPtr)CopySwap16Write; break;
+ default: client->pSwapReplyFunc = (ReplySwapPtr)WriteToClient; break;
+ }
+ WriteSwappedDataToClient(client, len,
+ (char *)pProp->data + ind);
+ }
+
+ if (stuff->delete && (reply.bytesAfter == 0))
+ { /* delete the Property */
+#ifdef LBX
+ if (pProp->tag_id)
+ TagDeleteTag(pProp->tag_id);
+#endif
+ if (prevProp == (PropertyPtr)NULL) /* takes care of head */
+ {
+ if (!(pWin->optional->userProps = pProp->next))
+ CheckWindowOptionalNeed (pWin);
+ }
+ else
+ prevProp->next = pProp->next;
+ xfree(pProp->data);
+ xfree(pProp);
+ }
+ return(client->noClientException);
+}
+
+#ifdef NXAGENT_CLIPBOARD
+/* GetWindowProperty clipboard use only */
+int
+GetWindowProperty(pWin, property, longOffset, longLength, delete,
+ type, actualType, format, nItems, bytesAfter, propData )
+ WindowPtr pWin;
+ Atom property;
+ long longOffset;
+ long longLength;
+ Bool delete;
+ Atom type;
+ Atom *actualType;
+ int *format;
+ unsigned long *nItems;
+ unsigned long *bytesAfter;
+ unsigned char **propData;
+{
+ PropertyPtr pProp, prevProp;
+ unsigned long n, len, ind;
+
+ if (!pWin)
+ return BadWindow;
+
+
+ if (!ValidAtom(property))
+ {
+ return(BadAtom);
+ }
+ if ((type != AnyPropertyType) && !ValidAtom(type))
+ {
+ return(BadAtom);
+ }
+
+ pProp = wUserProps (pWin);
+ prevProp = (PropertyPtr)NULL;
+
+ while (pProp)
+ {
+ if (pProp->propertyName == property)
+ break;
+ prevProp = pProp;
+ pProp = pProp->next;
+ }
+
+
+ if (!pProp)
+ return (BadAtom);
+
+ /* If the request type and actual type don't match. Return the
+ property information, but not the data. */
+
+ if (((type != pProp->type) &&
+ (type != AnyPropertyType))
+ )
+ {
+ *bytesAfter = pProp->size;
+ *format = pProp->format;
+ *nItems = 0;
+ *actualType = pProp->type;
+ return(Success);
+ }
+
+/*
+ * Return type, format, value to client
+ */
+ n = (pProp->format/8) * pProp->size; /* size (bytes) of prop */
+ ind = longOffset << 2;
+
+ /* If longOffset is invalid such that it causes "len" to
+ be negative, it's a value error. */
+
+ if (n < ind)
+ {
+ return BadValue;
+ }
+
+ len = min(n - ind, 4 * longLength);
+
+ *bytesAfter = n - (ind + len);
+ *format = pProp->format;
+ *nItems = len / (pProp->format / 8 );
+ *actualType = pProp->type;
+
+ if (delete && (*bytesAfter == 0))
+ { /* send the event */
+ xEvent event;
+
+ event.u.u.type = PropertyNotify;
+ event.u.property.window = pWin->drawable.id;
+ event.u.property.state = PropertyDelete;
+ event.u.property.atom = pProp->propertyName;
+ event.u.property.time = currentTime.milliseconds;
+ DeliverEvents(pWin, &event, 1, (WindowPtr)NULL);
+ }
+
+ if (len)
+ {
+ *propData = (unsigned char *)(pProp->data) + ind;
+ }
+
+ if (delete && (*bytesAfter == 0))
+ { /* delete the Property */
+#ifdef LBX
+ if (pProp->tag_id)
+ TagDeleteTag(pProp->tag_id);
+#endif
+ if (prevProp == (PropertyPtr)NULL) /* takes care of head */
+ {
+ if (!(pWin->optional->userProps = pProp->next))
+ CheckWindowOptionalNeed (pWin);
+ }
+ else
+ prevProp->next = pProp->next;
+ xfree(pProp->data);
+ xfree(pProp);
+ }
+ return(Success);
+}
+#endif
+
+int
+ProcListProperties(ClientPtr client)
+{
+ Atom *pAtoms = NULL, *temppAtoms;
+ xListPropertiesReply xlpr;
+ int numProps = 0;
+ WindowPtr pWin;
+ PropertyPtr pProp;
+ REQUEST(xResourceReq);
+
+ REQUEST_SIZE_MATCH(xResourceReq);
+ pWin = (WindowPtr)SecurityLookupWindow(stuff->id, client,
+ SecurityReadAccess);
+ if (!pWin)
+ return(BadWindow);
+
+ pProp = wUserProps (pWin);
+ while (pProp)
+ {
+ pProp = pProp->next;
+ numProps++;
+ }
+ if (numProps)
+ if(!(pAtoms = (Atom *)ALLOCATE_LOCAL(numProps * sizeof(Atom))))
+ return(BadAlloc);
+
+ xlpr.type = X_Reply;
+ xlpr.nProperties = numProps;
+ xlpr.length = (numProps * sizeof(Atom)) >> 2;
+ xlpr.sequenceNumber = client->sequence;
+ pProp = wUserProps (pWin);
+ temppAtoms = pAtoms;
+ while (pProp)
+ {
+ *temppAtoms++ = pProp->propertyName;
+ pProp = pProp->next;
+ }
+ WriteReplyToClient(client, sizeof(xGenericReply), &xlpr);
+ if (numProps)
+ {
+ client->pSwapReplyFunc = (ReplySwapPtr)Swap32Write;
+ WriteSwappedDataToClient(client, numProps * sizeof(Atom), pAtoms);
+ DEALLOCATE_LOCAL(pAtoms);
+ }
+ return(client->noClientException);
+}
+
+int
+ProcDeleteProperty(register ClientPtr client)
+{
+ WindowPtr pWin;
+ REQUEST(xDeletePropertyReq);
+ int result;
+
+ REQUEST_SIZE_MATCH(xDeletePropertyReq);
+ UpdateCurrentTime();
+ pWin = (WindowPtr)SecurityLookupWindow(stuff->window, client,
+ SecurityWriteAccess);
+ if (!pWin)
+ return(BadWindow);
+ if (!ValidAtom(stuff->property))
+ {
+ client->errorValue = stuff->property;
+ return (BadAtom);
+ }
+
+#ifdef XCSECURITY
+ switch(SecurityCheckPropertyAccess(client, pWin, stuff->property,
+ SecurityDestroyAccess))
+ {
+ case SecurityErrorOperation:
+ client->errorValue = stuff->property;
+ return BadAtom;;
+ case SecurityIgnoreOperation:
+ return Success;
+ }
+#endif
+
+ result = DeleteProperty(pWin, stuff->property);
+ if (client->noClientException != Success)
+ return(client->noClientException);
+ else
+ return(result);
+}
+
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-26 10:34:18 +0000