305 lines
9.1 KiB
C
305 lines
9.1 KiB
C
/************************************************************
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Copyright 1987, 1989, 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, 1989 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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#include <dix-config.h>
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#include "dix/dix_priv.h"
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#include "windowstr.h"
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#include "dixstruct.h"
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#include "dispatch.h"
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#include "selection.h"
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#include "xace.h"
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/*****************************************************************
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* Selection Stuff
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*
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* dixLookupSelection
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*
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* Selections are global to the server. The list of selections should
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* not be traversed directly. Instead, use the functions listed above.
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*
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*****************************************************************/
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Selection *CurrentSelections;
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CallbackListPtr SelectionCallback;
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int
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dixLookupSelection(Selection ** result, Atom selectionName,
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ClientPtr client, Mask access_mode)
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{
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Selection *pSel;
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int rc = BadMatch;
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client->errorValue = selectionName;
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for (pSel = CurrentSelections; pSel; pSel = pSel->next)
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if (pSel->selection == selectionName)
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break;
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if (!pSel) {
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pSel = dixAllocateObjectWithPrivates(Selection, PRIVATE_SELECTION);
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if (!pSel)
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return BadAlloc;
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pSel->selection = selectionName;
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pSel->next = CurrentSelections;
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CurrentSelections = pSel;
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}
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/* security creation/labeling check */
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rc = XaceHookSelectionAccess(client, &pSel, access_mode | DixCreateAccess);
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if (rc != Success) {
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return rc;
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}
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*result = pSel;
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return rc;
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}
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void
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InitSelections(void)
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{
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Selection *pSel, *pNextSel;
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pSel = CurrentSelections;
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while (pSel) {
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pNextSel = pSel->next;
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dixFreeObjectWithPrivates(pSel, PRIVATE_SELECTION);
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pSel = pNextSel;
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}
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CurrentSelections = NULL;
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}
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static inline void
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CallSelectionCallback(Selection * pSel, ClientPtr client,
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SelectionCallbackKind kind)
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{
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SelectionInfoRec info = { pSel, client, kind };
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CallCallbacks(&SelectionCallback, &info);
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}
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void
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DeleteWindowFromAnySelections(WindowPtr pWin)
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{
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Selection *pSel;
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for (pSel = CurrentSelections; pSel; pSel = pSel->next)
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if (pSel->pWin == pWin) {
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CallSelectionCallback(pSel, NULL, SelectionWindowDestroy);
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pSel->pWin = (WindowPtr) NULL;
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pSel->window = None;
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pSel->client = NullClient;
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}
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}
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void
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DeleteClientFromAnySelections(ClientPtr client)
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{
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Selection *pSel;
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for (pSel = CurrentSelections; pSel; pSel = pSel->next)
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if (pSel->client == client) {
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CallSelectionCallback(pSel, NULL, SelectionClientClose);
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pSel->pWin = (WindowPtr) NULL;
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pSel->window = None;
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pSel->client = NullClient;
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}
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}
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int
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ProcSetSelectionOwner(ClientPtr client)
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{
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WindowPtr pWin = NULL;
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TimeStamp time;
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Selection *pSel;
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int rc;
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REQUEST(xSetSelectionOwnerReq);
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REQUEST_SIZE_MATCH(xSetSelectionOwnerReq);
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UpdateCurrentTime();
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time = ClientTimeToServerTime(stuff->time);
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/* If the client's time stamp is in the future relative to the server's
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time stamp, do not set the selection, just return success. */
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if (CompareTimeStamps(time, currentTime) == LATER)
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return Success;
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if (stuff->window != None) {
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rc = dixLookupWindow(&pWin, stuff->window, client, DixSetAttrAccess);
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if (rc != Success)
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return rc;
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}
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if (!ValidAtom(stuff->selection)) {
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client->errorValue = stuff->selection;
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return BadAtom;
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}
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/*
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* First, see if the selection is already set...
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*/
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rc = dixLookupSelection(&pSel, stuff->selection, client, DixSetAttrAccess);
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if (rc != Success)
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return rc;
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/* If the timestamp in client's request is in the past relative
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to the time stamp indicating the last time the owner of the
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selection was set, do not set the selection, just return
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success. */
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if (CompareTimeStamps(time, pSel->lastTimeChanged) == EARLIER)
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return Success;
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if (pSel->client && (!pWin || (pSel->client != client))) {
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xEvent event = {
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.u.selectionClear.time = time.milliseconds,
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.u.selectionClear.window = pSel->window,
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.u.selectionClear.atom = pSel->selection
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};
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event.u.u.type = SelectionClear;
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WriteEventsToClient(pSel->client, 1, &event);
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}
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pSel->lastTimeChanged = time;
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pSel->window = stuff->window;
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pSel->pWin = pWin;
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pSel->client = (pWin ? client : NullClient);
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CallSelectionCallback(pSel, client, SelectionSetOwner);
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return Success;
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}
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int
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ProcGetSelectionOwner(ClientPtr client)
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{
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int rc;
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Selection *pSel;
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xGetSelectionOwnerReply reply;
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REQUEST(xResourceReq);
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REQUEST_SIZE_MATCH(xResourceReq);
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if (!ValidAtom(stuff->id)) {
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client->errorValue = stuff->id;
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return BadAtom;
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}
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reply = (xGetSelectionOwnerReply) {
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.type = X_Reply,
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.sequenceNumber = client->sequence,
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.length = 0,
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};
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rc = dixLookupSelection(&pSel, stuff->id, client, DixGetAttrAccess);
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if (rc == Success)
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reply.owner = pSel->window;
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else if (rc == BadMatch)
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reply.owner = None;
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else
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return rc;
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WriteReplyToClient(client, sizeof(xGetSelectionOwnerReply), &reply);
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return Success;
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}
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int
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ProcConvertSelection(ClientPtr client)
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{
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Bool paramsOkay;
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xEvent event;
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WindowPtr pWin;
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Selection *pSel;
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int rc;
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REQUEST(xConvertSelectionReq);
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REQUEST_SIZE_MATCH(xConvertSelectionReq);
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rc = dixLookupWindow(&pWin, stuff->requestor, client, DixSetAttrAccess);
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if (rc != Success)
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return rc;
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paramsOkay = ValidAtom(stuff->selection) && ValidAtom(stuff->target);
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paramsOkay &= (stuff->property == None) || ValidAtom(stuff->property);
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if (!paramsOkay) {
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client->errorValue = stuff->property;
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return BadAtom;
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}
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if (stuff->time == CurrentTime)
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UpdateCurrentTime();
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rc = dixLookupSelection(&pSel, stuff->selection, client, DixReadAccess);
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memset(&event, 0, sizeof(xEvent));
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if (rc != Success && rc != BadMatch)
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return rc;
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else if (rc == Success && pSel->window != None) {
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event.u.u.type = SelectionRequest;
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event.u.selectionRequest.owner = pSel->window;
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event.u.selectionRequest.time = stuff->time;
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event.u.selectionRequest.requestor = stuff->requestor;
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event.u.selectionRequest.selection = stuff->selection;
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event.u.selectionRequest.target = stuff->target;
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event.u.selectionRequest.property = stuff->property;
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if (pSel->client && pSel->client != serverClient &&
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!pSel->client->clientGone) {
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WriteEventsToClient(pSel->client, 1, &event);
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return Success;
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}
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}
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event.u.u.type = SelectionNotify;
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event.u.selectionNotify.time = stuff->time;
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event.u.selectionNotify.requestor = stuff->requestor;
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event.u.selectionNotify.selection = stuff->selection;
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event.u.selectionNotify.target = stuff->target;
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event.u.selectionNotify.property = None;
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WriteEventsToClient(client, 1, &event);
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return Success;
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}
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