diff options
Diffstat (limited to 'xorg-server/xfixes/select.c')
-rw-r--r-- | xorg-server/xfixes/select.c | 579 |
1 files changed, 289 insertions, 290 deletions
diff --git a/xorg-server/xfixes/select.c b/xorg-server/xfixes/select.c index 1343ea737..2bf13f3fd 100644 --- a/xorg-server/xfixes/select.c +++ b/xorg-server/xfixes/select.c @@ -1,290 +1,289 @@ -/*
- * Copyright © 2002 Keith Packard
- *
- * 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, and that the name of Keith Packard not be used in
- * advertising or publicity pertaining to distribution of the software without
- * specific, written prior permission. Keith Packard makes no
- * representations about the suitability of this software for any purpose. It
- * is provided "as is" without express or implied warranty.
- *
- * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
- * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
- * EVENT SHALL KEITH PACKARD 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 "xfixesint.h"
-#include "xace.h"
-
-static RESTYPE SelectionClientType, SelectionWindowType;
-static Bool SelectionCallbackRegistered = FALSE;
-
-/*
- * There is a global list of windows selecting for selection events
- * on every selection. This should be plenty efficient for the
- * expected usage, if it does become a problem, it should be easily
- * replaced with a hash table of some kind keyed off the selection atom
- */
-
-typedef struct _SelectionEvent *SelectionEventPtr;
-
-typedef struct _SelectionEvent {
- SelectionEventPtr next;
- Atom selection;
- CARD32 eventMask;
- ClientPtr pClient;
- WindowPtr pWindow;
- XID clientResource;
-} SelectionEventRec;
-
-static SelectionEventPtr selectionEvents;
-
-static void
-XFixesSelectionCallback (CallbackListPtr *callbacks, pointer data, pointer args)
-{
- SelectionEventPtr e;
- SelectionInfoRec *info = (SelectionInfoRec *) args;
- Selection *selection = info->selection;
- int subtype;
- CARD32 eventMask;
-
- switch (info->kind) {
- case SelectionSetOwner:
- subtype = XFixesSetSelectionOwnerNotify;
- eventMask = XFixesSetSelectionOwnerNotifyMask;
- break;
- case SelectionWindowDestroy:
- subtype = XFixesSelectionWindowDestroyNotify;
- eventMask = XFixesSelectionWindowDestroyNotifyMask;
- break;
- case SelectionClientClose:
- subtype = XFixesSelectionClientCloseNotify;
- eventMask = XFixesSelectionClientCloseNotifyMask;
- break;
- default:
- return;
- }
- for (e = selectionEvents; e; e = e->next)
- {
- if (e->selection == selection->selection &&
- (e->eventMask & eventMask))
- {
- xXFixesSelectionNotifyEvent ev;
-
- memset(&ev, 0, sizeof(xXFixesSelectionNotifyEvent));
- ev.type = XFixesEventBase + XFixesSelectionNotify;
- ev.subtype = subtype;
- ev.window = e->pWindow->drawable.id;
- if (subtype == XFixesSetSelectionOwnerNotify)
- ev.owner = selection->window;
- else
- ev.owner = 0;
- ev.selection = e->selection;
- ev.timestamp = currentTime.milliseconds;
- ev.selectionTimestamp = selection->lastTimeChanged.milliseconds;
- WriteEventsToClient (e->pClient, 1, (xEvent *) &ev);
- }
- }
-}
-
-static Bool
-CheckSelectionCallback (void)
-{
- if (selectionEvents)
- {
- if (!SelectionCallbackRegistered)
- {
- if (!AddCallback (&SelectionCallback, XFixesSelectionCallback, NULL))
- return FALSE;
- SelectionCallbackRegistered = TRUE;
- }
- }
- else
- {
- if (SelectionCallbackRegistered)
- {
- DeleteCallback (&SelectionCallback, XFixesSelectionCallback, NULL);
- SelectionCallbackRegistered = FALSE;
- }
- }
- return TRUE;
-}
-
-#define SelectionAllEvents (XFixesSetSelectionOwnerNotifyMask |\
- XFixesSelectionWindowDestroyNotifyMask |\
- XFixesSelectionClientCloseNotifyMask)
-
-static int
-XFixesSelectSelectionInput (ClientPtr pClient,
- Atom selection,
- WindowPtr pWindow,
- CARD32 eventMask)
-{
- pointer val;
- int rc;
- SelectionEventPtr *prev, e;
-
- rc = XaceHook(XACE_SELECTION_ACCESS, pClient, selection, DixGetAttrAccess);
- if (rc != Success)
- return rc;
-
- for (prev = &selectionEvents; (e = *prev); prev = &e->next)
- {
- if (e->selection == selection &&
- e->pClient == pClient &&
- e->pWindow == pWindow)
- {
- break;
- }
- }
- if (!eventMask)
- {
- if (e)
- {
- FreeResource (e->clientResource, 0);
- }
- return Success;
- }
- if (!e)
- {
- e = (SelectionEventPtr) malloc(sizeof (SelectionEventRec));
- if (!e)
- return BadAlloc;
-
- e->next = 0;
- e->selection = selection;
- e->pClient = pClient;
- e->pWindow = pWindow;
- e->clientResource = FakeClientID(pClient->index);
-
- /*
- * Add a resource hanging from the window to
- * catch window destroy
- */
- rc = dixLookupResourceByType (&val, pWindow->drawable.id,
- SelectionWindowType, serverClient,
- DixGetAttrAccess);
- if (rc != Success)
- if (!AddResource (pWindow->drawable.id, SelectionWindowType,
- (pointer) pWindow))
- {
- free(e);
- return BadAlloc;
- }
-
- if (!AddResource (e->clientResource, SelectionClientType, (pointer) e))
- return BadAlloc;
-
- *prev = e;
- if (!CheckSelectionCallback ())
- {
- FreeResource (e->clientResource, 0);
- return BadAlloc;
- }
- }
- e->eventMask = eventMask;
- return Success;
-}
-
-int
-ProcXFixesSelectSelectionInput (ClientPtr client)
-{
- REQUEST (xXFixesSelectSelectionInputReq);
- WindowPtr pWin;
- int rc;
-
- REQUEST_SIZE_MATCH (xXFixesSelectSelectionInputReq);
- rc = dixLookupWindow(&pWin, stuff->window, client, DixGetAttrAccess);
- if (rc != Success)
- return rc;
- if (stuff->eventMask & ~SelectionAllEvents)
- {
- client->errorValue = stuff->eventMask;
- return BadValue;
- }
- return XFixesSelectSelectionInput (client, stuff->selection,
- pWin, stuff->eventMask);
-}
-
-int
-SProcXFixesSelectSelectionInput (ClientPtr client)
-{
- register int n;
- REQUEST(xXFixesSelectSelectionInputReq);
-
- swaps(&stuff->length, n);
- swapl(&stuff->window, n);
- swapl(&stuff->selection, n);
- swapl(&stuff->eventMask, n);
- return (*ProcXFixesVector[stuff->xfixesReqType])(client);
-}
-
-void
-SXFixesSelectionNotifyEvent (xXFixesSelectionNotifyEvent *from,
- xXFixesSelectionNotifyEvent *to)
-{
- to->type = from->type;
- cpswaps (from->sequenceNumber, to->sequenceNumber);
- cpswapl (from->window, to->window);
- cpswapl (from->owner, to->owner);
- cpswapl (from->selection, to->selection);
- cpswapl (from->timestamp, to->timestamp);
- cpswapl (from->selectionTimestamp, to->selectionTimestamp);
-}
-
-static int
-SelectionFreeClient (pointer data, XID id)
-{
- SelectionEventPtr old = (SelectionEventPtr) data;
- SelectionEventPtr *prev, e;
-
- for (prev = &selectionEvents; (e = *prev); prev = &e->next)
- {
- if (e == old)
- {
- *prev = e->next;
- free(e);
- CheckSelectionCallback ();
- break;
- }
- }
- return 1;
-}
-
-static int
-SelectionFreeWindow (pointer data, XID id)
-{
- WindowPtr pWindow = (WindowPtr) data;
- SelectionEventPtr e, next;
-
- for (e = selectionEvents; e; e = next)
- {
- next = e->next;
- if (e->pWindow == pWindow)
- {
- FreeResource (e->clientResource, 0);
- }
- }
- return 1;
-}
-
-Bool
-XFixesSelectionInit (void)
-{
- SelectionClientType = CreateNewResourceType(SelectionFreeClient,
- "XFixesSelectionClient");
- SelectionWindowType = CreateNewResourceType(SelectionFreeWindow,
- "XFixesSelectionWindow");
- return SelectionClientType && SelectionWindowType;
-}
+/* + * Copyright © 2002 Keith Packard + * + * 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, and that the name of Keith Packard not be used in + * advertising or publicity pertaining to distribution of the software without + * specific, written prior permission. Keith Packard makes no + * representations about the suitability of this software for any purpose. It + * is provided "as is" without express or implied warranty. + * + * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, + * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO + * EVENT SHALL KEITH PACKARD 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 "xfixesint.h" +#include "xace.h" + +static RESTYPE SelectionClientType, SelectionWindowType; +static Bool SelectionCallbackRegistered = FALSE; + +/* + * There is a global list of windows selecting for selection events + * on every selection. This should be plenty efficient for the + * expected usage, if it does become a problem, it should be easily + * replaced with a hash table of some kind keyed off the selection atom + */ + +typedef struct _SelectionEvent *SelectionEventPtr; + +typedef struct _SelectionEvent { + SelectionEventPtr next; + Atom selection; + CARD32 eventMask; + ClientPtr pClient; + WindowPtr pWindow; + XID clientResource; +} SelectionEventRec; + +static SelectionEventPtr selectionEvents; + +static void +XFixesSelectionCallback (CallbackListPtr *callbacks, pointer data, pointer args) +{ + SelectionEventPtr e; + SelectionInfoRec *info = (SelectionInfoRec *) args; + Selection *selection = info->selection; + int subtype; + CARD32 eventMask; + + switch (info->kind) { + case SelectionSetOwner: + subtype = XFixesSetSelectionOwnerNotify; + eventMask = XFixesSetSelectionOwnerNotifyMask; + break; + case SelectionWindowDestroy: + subtype = XFixesSelectionWindowDestroyNotify; + eventMask = XFixesSelectionWindowDestroyNotifyMask; + break; + case SelectionClientClose: + subtype = XFixesSelectionClientCloseNotify; + eventMask = XFixesSelectionClientCloseNotifyMask; + break; + default: + return; + } + for (e = selectionEvents; e; e = e->next) + { + if (e->selection == selection->selection && + (e->eventMask & eventMask)) + { + xXFixesSelectionNotifyEvent ev; + + memset(&ev, 0, sizeof(xXFixesSelectionNotifyEvent)); + ev.type = XFixesEventBase + XFixesSelectionNotify; + ev.subtype = subtype; + ev.window = e->pWindow->drawable.id; + if (subtype == XFixesSetSelectionOwnerNotify) + ev.owner = selection->window; + else + ev.owner = 0; + ev.selection = e->selection; + ev.timestamp = currentTime.milliseconds; + ev.selectionTimestamp = selection->lastTimeChanged.milliseconds; + WriteEventsToClient (e->pClient, 1, (xEvent *) &ev); + } + } +} + +static Bool +CheckSelectionCallback (void) +{ + if (selectionEvents) + { + if (!SelectionCallbackRegistered) + { + if (!AddCallback (&SelectionCallback, XFixesSelectionCallback, NULL)) + return FALSE; + SelectionCallbackRegistered = TRUE; + } + } + else + { + if (SelectionCallbackRegistered) + { + DeleteCallback (&SelectionCallback, XFixesSelectionCallback, NULL); + SelectionCallbackRegistered = FALSE; + } + } + return TRUE; +} + +#define SelectionAllEvents (XFixesSetSelectionOwnerNotifyMask |\ + XFixesSelectionWindowDestroyNotifyMask |\ + XFixesSelectionClientCloseNotifyMask) + +static int +XFixesSelectSelectionInput (ClientPtr pClient, + Atom selection, + WindowPtr pWindow, + CARD32 eventMask) +{ + pointer val; + int rc; + SelectionEventPtr *prev, e; + + rc = XaceHook(XACE_SELECTION_ACCESS, pClient, selection, DixGetAttrAccess); + if (rc != Success) + return rc; + + for (prev = &selectionEvents; (e = *prev); prev = &e->next) + { + if (e->selection == selection && + e->pClient == pClient && + e->pWindow == pWindow) + { + break; + } + } + if (!eventMask) + { + if (e) + { + FreeResource (e->clientResource, 0); + } + return Success; + } + if (!e) + { + e = (SelectionEventPtr) malloc(sizeof (SelectionEventRec)); + if (!e) + return BadAlloc; + + e->next = 0; + e->selection = selection; + e->pClient = pClient; + e->pWindow = pWindow; + e->clientResource = FakeClientID(pClient->index); + + /* + * Add a resource hanging from the window to + * catch window destroy + */ + rc = dixLookupResourceByType (&val, pWindow->drawable.id, + SelectionWindowType, serverClient, + DixGetAttrAccess); + if (rc != Success) + if (!AddResource (pWindow->drawable.id, SelectionWindowType, + (pointer) pWindow)) + { + free(e); + return BadAlloc; + } + + if (!AddResource (e->clientResource, SelectionClientType, (pointer) e)) + return BadAlloc; + + *prev = e; + if (!CheckSelectionCallback ()) + { + FreeResource (e->clientResource, 0); + return BadAlloc; + } + } + e->eventMask = eventMask; + return Success; +} + +int +ProcXFixesSelectSelectionInput (ClientPtr client) +{ + REQUEST (xXFixesSelectSelectionInputReq); + WindowPtr pWin; + int rc; + + REQUEST_SIZE_MATCH (xXFixesSelectSelectionInputReq); + rc = dixLookupWindow(&pWin, stuff->window, client, DixGetAttrAccess); + if (rc != Success) + return rc; + if (stuff->eventMask & ~SelectionAllEvents) + { + client->errorValue = stuff->eventMask; + return BadValue; + } + return XFixesSelectSelectionInput (client, stuff->selection, + pWin, stuff->eventMask); +} + +int +SProcXFixesSelectSelectionInput (ClientPtr client) +{ + REQUEST(xXFixesSelectSelectionInputReq); + + swaps(&stuff->length); + swapl(&stuff->window); + swapl(&stuff->selection); + swapl(&stuff->eventMask); + return (*ProcXFixesVector[stuff->xfixesReqType])(client); +} + +void +SXFixesSelectionNotifyEvent (xXFixesSelectionNotifyEvent *from, + xXFixesSelectionNotifyEvent *to) +{ + to->type = from->type; + cpswaps (from->sequenceNumber, to->sequenceNumber); + cpswapl (from->window, to->window); + cpswapl (from->owner, to->owner); + cpswapl (from->selection, to->selection); + cpswapl (from->timestamp, to->timestamp); + cpswapl (from->selectionTimestamp, to->selectionTimestamp); +} + +static int +SelectionFreeClient (pointer data, XID id) +{ + SelectionEventPtr old = (SelectionEventPtr) data; + SelectionEventPtr *prev, e; + + for (prev = &selectionEvents; (e = *prev); prev = &e->next) + { + if (e == old) + { + *prev = e->next; + free(e); + CheckSelectionCallback (); + break; + } + } + return 1; +} + +static int +SelectionFreeWindow (pointer data, XID id) +{ + WindowPtr pWindow = (WindowPtr) data; + SelectionEventPtr e, next; + + for (e = selectionEvents; e; e = next) + { + next = e->next; + if (e->pWindow == pWindow) + { + FreeResource (e->clientResource, 0); + } + } + return 1; +} + +Bool +XFixesSelectionInit (void) +{ + SelectionClientType = CreateNewResourceType(SelectionFreeClient, + "XFixesSelectionClient"); + SelectionWindowType = CreateNewResourceType(SelectionFreeWindow, + "XFixesSelectionWindow"); + return SelectionClientType && SelectionWindowType; +} |