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+/************************************************************
+
+Copyright 1987, 1989, 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, 1989 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.
+
+********************************************************/
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include "windowstr.h"
+#include "dixstruct.h"
+#include "dispatch.h"
+#include "selection.h"
+#include "xace.h"
+
+/*****************************************************************
+ * Selection Stuff
+ *
+ * dixLookupSelection
+ *
+ * Selections are global to the server. The list of selections should
+ * not be traversed directly. Instead, use the functions listed above.
+ *
+ *****************************************************************/
+
+_X_EXPORT Selection *CurrentSelections;
+static int NumCurrentSelections;
+CallbackListPtr SelectionCallback;
+
+_X_EXPORT int
+dixLookupSelection(Selection **result, Atom selectionName,
+ ClientPtr client, Mask access_mode)
+{
+ Selection *pSel = NULL;
+ int i, rc = BadMatch;
+ client->errorValue = selectionName;
+
+ for (i = 0; i < NumCurrentSelections; i++)
+ if (CurrentSelections[i].selection == selectionName) {
+ pSel = CurrentSelections + i;
+ rc = XaceHookSelectionAccess(client, selectionName, access_mode);
+ break;
+ }
+
+ *result = pSel;
+ return rc;
+}
+
+void
+InitSelections(void)
+{
+ Selection *pSel = CurrentSelections;
+
+ for (; pSel - CurrentSelections < NumCurrentSelections; pSel++)
+ dixFreePrivates(pSel->devPrivates);
+
+ xfree(CurrentSelections);
+ CurrentSelections = NULL;
+ NumCurrentSelections = 0;
+}
+
+static _X_INLINE void
+CallSelectionCallback(Selection *pSel, ClientPtr client,
+ SelectionCallbackKind kind)
+{
+ SelectionInfoRec info = { pSel, client, kind };
+ CallCallbacks(&SelectionCallback, &info);
+}
+
+void
+DeleteWindowFromAnySelections(WindowPtr pWin)
+{
+ Selection *pSel = CurrentSelections;
+
+ for (; pSel - CurrentSelections < NumCurrentSelections; pSel++)
+ if (pSel->pWin == pWin) {
+ CallSelectionCallback(pSel, NULL, SelectionWindowDestroy);
+
+ pSel->pWin = (WindowPtr)NULL;
+ pSel->window = None;
+ pSel->client = NullClient;
+ }
+}
+
+void
+DeleteClientFromAnySelections(ClientPtr client)
+{
+ Selection *pSel = CurrentSelections;
+
+ for (; pSel - CurrentSelections < NumCurrentSelections; pSel++)
+ if (pSel->client == client) {
+ CallSelectionCallback(pSel, NULL, SelectionClientClose);
+
+ pSel->pWin = (WindowPtr)NULL;
+ pSel->window = None;
+ pSel->client = NullClient;
+ }
+}
+
+int
+ProcSetSelectionOwner(ClientPtr client)
+{
+ WindowPtr pWin = NULL;
+ TimeStamp time;
+ Selection *pSel;
+ int rc;
+
+ REQUEST(xSetSelectionOwnerReq);
+ REQUEST_SIZE_MATCH(xSetSelectionOwnerReq);
+
+ UpdateCurrentTime();
+ time = ClientTimeToServerTime(stuff->time);
+
+ /* If the client's time stamp is in the future relative to the server's
+ time stamp, do not set the selection, just return success. */
+ if (CompareTimeStamps(time, currentTime) == LATER)
+ return Success;
+
+ if (stuff->window != None) {
+ rc = dixLookupWindow(&pWin, stuff->window, client, DixSetAttrAccess);
+ if (rc != Success)
+ return rc;
+ }
+ if (!ValidAtom(stuff->selection)) {
+ client->errorValue = stuff->selection;
+ return BadAtom;
+ }
+
+ /*
+ * First, see if the selection is already set...
+ */
+ rc = dixLookupSelection(&pSel, stuff->selection, client, DixSetAttrAccess);
+
+ if (rc == Success) {
+ xEvent event;
+
+ /* If the timestamp in client's request is in the past relative
+ to the time stamp indicating the last time the owner of the
+ selection was set, do not set the selection, just return
+ success. */
+ if (CompareTimeStamps(time, pSel->lastTimeChanged) == EARLIER)
+ return Success;
+ if (pSel->client && (!pWin || (pSel->client != client)))
+ {
+ event.u.u.type = SelectionClear;
+ event.u.selectionClear.time = time.milliseconds;
+ event.u.selectionClear.window = pSel->window;
+ event.u.selectionClear.atom = pSel->selection;
+ TryClientEvents(pSel->client, &event, 1, NoEventMask,
+ NoEventMask /* CantBeFiltered */, NullGrab);
+ }
+ }
+ else if (rc == BadMatch)
+ {
+ /*
+ * It doesn't exist, so add it...
+ */
+ int size = (NumCurrentSelections + 1) * sizeof(Selection);
+ CurrentSelections = xrealloc(CurrentSelections, size);
+ if (!CurrentSelections) {
+ NumCurrentSelections = 0;
+ return BadAlloc;
+ }
+ pSel = CurrentSelections + NumCurrentSelections;
+ pSel->selection = stuff->selection;
+ pSel->devPrivates = NULL;
+ pSel->next = NULL;
+ if (NumCurrentSelections > 0)
+ CurrentSelections[NumCurrentSelections - 1].next = pSel;
+ NumCurrentSelections++;
+ }
+ else
+ return rc;
+
+ pSel->lastTimeChanged = time;
+ pSel->window = stuff->window;
+ pSel->pWin = pWin;
+ pSel->client = (pWin ? client : NullClient);
+
+ CallSelectionCallback(pSel, client, SelectionSetOwner);
+ return client->noClientException;
+}
+
+int
+ProcGetSelectionOwner(ClientPtr client)
+{
+ int rc;
+ Selection *pSel;
+ xGetSelectionOwnerReply reply;
+
+ REQUEST(xResourceReq);
+ REQUEST_SIZE_MATCH(xResourceReq);
+
+ if (!ValidAtom(stuff->id)) {
+ client->errorValue = stuff->id;
+ return BadAtom;
+ }
+
+ reply.type = X_Reply;
+ reply.length = 0;
+ reply.sequenceNumber = client->sequence;
+
+ rc = dixLookupSelection(&pSel, stuff->id, client, DixGetAttrAccess);
+ if (rc == Success)
+ reply.owner = pSel->window;
+ else if (rc == BadMatch)
+ reply.owner = None;
+ else
+ return rc;
+
+ WriteReplyToClient(client, sizeof(xGetSelectionOwnerReply), &reply);
+ return client->noClientException;
+}
+
+int
+ProcConvertSelection(ClientPtr client)
+{
+ Bool paramsOkay;
+ xEvent event;
+ WindowPtr pWin;
+ Selection *pSel;
+ int rc;
+
+ REQUEST(xConvertSelectionReq);
+ REQUEST_SIZE_MATCH(xConvertSelectionReq);
+
+ rc = dixLookupWindow(&pWin, stuff->requestor, client, DixSetAttrAccess);
+ if (rc != Success)
+ return rc;
+
+ paramsOkay = ValidAtom(stuff->selection) && ValidAtom(stuff->target);
+ paramsOkay &= (stuff->property == None) || ValidAtom(stuff->property);
+ if (!paramsOkay) {
+ client->errorValue = stuff->property;
+ return BadAtom;
+ }
+
+ rc = dixLookupSelection(&pSel, stuff->selection, client, DixReadAccess);
+
+ if (rc != Success && rc != BadMatch)
+ return rc;
+ else if (rc == Success && pSel->window != None) {
+ event.u.u.type = SelectionRequest;
+ event.u.selectionRequest.owner = pSel->window;
+ event.u.selectionRequest.time = stuff->time;
+ event.u.selectionRequest.requestor = stuff->requestor;
+ event.u.selectionRequest.selection = stuff->selection;
+ event.u.selectionRequest.target = stuff->target;
+ event.u.selectionRequest.property = stuff->property;
+ if (TryClientEvents(pSel->client, &event, 1, NoEventMask,
+ NoEventMask /* CantBeFiltered */, NullGrab))
+ return client->noClientException;
+ }
+
+ event.u.u.type = SelectionNotify;
+ event.u.selectionNotify.time = stuff->time;
+ event.u.selectionNotify.requestor = stuff->requestor;
+ event.u.selectionNotify.selection = stuff->selection;
+ event.u.selectionNotify.target = stuff->target;
+ event.u.selectionNotify.property = None;
+ TryClientEvents(client, &event, 1, NoEventMask,
+ NoEventMask /* CantBeFiltered */, NullGrab);
+ return client->noClientException;
+}
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