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-rw-r--r--nx-X11/programs/Xserver/hw/nxagent/Clipboard.c1557
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diff --git a/nx-X11/programs/Xserver/hw/nxagent/Clipboard.c b/nx-X11/programs/Xserver/hw/nxagent/Clipboard.c
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+++ b/nx-X11/programs/Xserver/hw/nxagent/Clipboard.c
@@ -0,0 +1,1557 @@
+/**************************************************************************/
+/* */
+/* 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. */
+/* */
+/**************************************************************************/
+
+#define NEED_EVENTS
+
+#include "X.h"
+#include "Xproto.h"
+#include "Xatom.h"
+#include "selection.h"
+#include "windowstr.h"
+
+#include "Windows.h"
+#include "Atoms.h"
+#include "Agent.h"
+#include "Args.h"
+#include "Trap.h"
+#include "Rootless.h"
+#include "Clipboard.h"
+
+/*
+ * Use asyncronous get property replies.
+ */
+
+#include "NXlib.h"
+
+/*
+ * Set here the required log level.
+ */
+
+#define PANIC
+#define WARNING
+#undef TEST
+#undef DEBUG
+
+/*
+ * These are defined in the dispatcher.
+ */
+
+extern int NumCurrentSelections;
+extern Selection *CurrentSelections;
+
+int nxagentLastClipboardClient = -1;
+
+static int agentClipboardStatus;
+static int clientAccum;
+
+Atom serverCutProperty;
+static Atom clientCutProperty;
+static Window serverWindow;
+
+static const int nxagentPrimarySelection = 0;
+static const int nxagentClipboardSelection = 1;
+static const int nxagentMaxSelections = 2;
+
+typedef struct _SelectionOwner
+{
+ Atom selection;
+ ClientPtr client;
+ Window window;
+ WindowPtr windowPtr;
+ Time lastTimeChanged;
+
+} SelectionOwner;
+
+static SelectionOwner *lastSelectionOwner;
+static Atom nxagentLastRequestedSelection;
+static Atom nxagentClipboardAtom;
+static Atom nxagentTimestampAtom;
+
+/*
+ * Needed to handle the notify selection event to
+ * be sent to client once the selection property
+ * has been retrieved from the real X server.
+ */
+
+typedef enum
+{
+ SelectionStageNone,
+ SelectionStageQuerySize,
+ SelectionStageWaitSize,
+ SelectionStageQueryData,
+ SelectionStageWaitData
+} ClientSelectionStage;
+
+static WindowPtr lastClientWindowPtr;
+static ClientPtr lastClientClientPtr;
+static Window lastClientRequestor;
+static Atom lastClientProperty;
+static Atom lastClientSelection;
+static Atom lastClientTarget;
+static Time lastClientTime;
+static Time lastClientReqTime;
+static unsigned long lastClientPropertySize;
+
+static ClientSelectionStage lastClientStage;
+
+static Window lastServerRequestor;
+static Atom lastServerProperty;
+static Atom lastServerTarget;
+static Time lastServerTime;
+
+static Atom serverTARGETS;
+static Atom serverTEXT;
+static Atom clientTARGETS;
+static Atom clientTEXT;
+static Atom clientCOMPOUND_TEXT;
+
+static char szAgentTARGETS[] = "TARGETS";
+static char szAgentTEXT[] = "TEXT";
+static char szAgentCOMPOUND_TEXT[] = "COMPOUND_TEXT";
+static char szAgentNX_CUT_BUFFER_CLIENT[] = "NX_CUT_BUFFER_CLIENT";
+
+extern Display *nxagentDisplay;
+
+Bool nxagentValidServerTargets(Atom target);
+void nxagentSendSelectionNotify(Atom property);
+void nxagentTransferSelection(int resource);
+void nxagentCollectPropertyEvent(int resource);
+void nxagentResetSelectionOwner(void);
+WindowPtr nxagentGetClipboardWindow(Atom property, WindowPtr pWin);
+void nxagentNotifyConvertFailure(ClientPtr client, Window requestor,
+ Atom selection, Atom target, Time time);
+int nxagentSendNotify(xEvent *event);
+
+/*
+ * This is from NXproperty.c.
+ */
+
+int GetWindowProperty(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);
+
+Bool nxagentValidServerTargets(Atom target)
+{
+ #ifdef DEBUG
+ fprintf(stderr, "nxagentValidServerTargets: Got called.\n");
+ #endif
+
+ if (target == XA_STRING) return True;
+ if (target == serverTEXT) return True;
+
+ return False;
+}
+
+void nxagentClearClipboard(ClientPtr pClient, WindowPtr pWindow)
+{
+ int i;
+
+ #ifdef DEBUG
+ fprintf(stderr, "nxagentClearClipboard: Called with client [%p] window [%p].\n",
+ (void *) pClient, (void *) pWindow);
+ #endif
+
+ /*
+ * Only for PRIMARY and CLIPBOARD selections.
+ */
+
+ for (i = 0; i < nxagentMaxSelections; i++)
+ {
+ if ((pClient != NULL && lastSelectionOwner[i].client == pClient) ||
+ (pWindow != NULL && lastSelectionOwner[i].windowPtr == pWindow))
+ {
+ #ifdef TEST
+ fprintf(stderr, "nxagentClearClipboard: Resetting state with client [%p] window [%p].\n",
+ (void *) pClient, (void *) pWindow);
+ #endif
+
+ lastSelectionOwner[i].client = NULL;
+ lastSelectionOwner[i].window = None;
+ lastSelectionOwner[i].windowPtr = NULL;
+ lastSelectionOwner[i].lastTimeChanged = GetTimeInMillis();
+
+ lastClientWindowPtr = NULL;
+ lastClientStage = SelectionStageNone;
+
+ lastServerRequestor = None;
+ }
+ }
+
+ if (pWindow == lastClientWindowPtr)
+ {
+ lastClientWindowPtr = NULL;
+ lastClientStage = SelectionStageNone;
+ }
+
+}
+
+void nxagentClearSelection(XEvent *X)
+{
+ xEvent x;
+
+ int i = 0;
+
+ #ifdef DEBUG
+ fprintf(stderr, "nxagentClearSelection: Got called.\n");
+ #endif
+
+ if (agentClipboardStatus != 1 ||
+ nxagentOption(Clipboard) == ClipboardServer)
+ {
+ return;
+ }
+
+ #ifdef DEBUG
+ fprintf(stderr, "nxagentClearSelection: SelectionClear event.\n");
+ #endif
+
+ while ((i < nxagentMaxSelections) &&
+ (lastSelectionOwner[i].selection != X->xselectionclear.selection))
+ {
+ i++;
+ }
+
+ if (i < nxagentMaxSelections)
+ {
+ if (lastSelectionOwner[i].client != NULL)
+ {
+ x.u.u.type = SelectionClear;
+ x.u.selectionClear.time = GetTimeInMillis();
+ x.u.selectionClear.window = lastSelectionOwner[i].window;
+ x.u.selectionClear.atom = CurrentSelections[i].selection;
+
+ (void) TryClientEvents(lastSelectionOwner[i].client, &x, 1,
+ NoEventMask, NoEventMask,
+ NullGrab);
+ }
+
+ CurrentSelections[i].window = WindowTable[0]->drawable.id;
+ CurrentSelections[i].client = NullClient;
+
+ lastSelectionOwner[i].client = NULL;
+ lastSelectionOwner[i].window = None;
+ lastSelectionOwner[i].lastTimeChanged = GetTimeInMillis();
+ }
+
+ lastClientWindowPtr = NULL;
+ lastClientStage = SelectionStageNone;
+}
+
+void nxagentRequestSelection(XEvent *X)
+{
+ int result;
+ int i = 0;
+ XSelectionEvent eventSelection;
+
+ #ifdef DEBUG
+ fprintf(stderr, "nxagentRequestSelection: Got called.\n");
+ #endif
+
+ if (agentClipboardStatus != 1)
+ {
+ return;
+ }
+
+ if (!nxagentValidServerTargets(X->xselectionrequest.target) ||
+ (lastServerRequestor != None) ||
+ ((X->xselectionrequest.selection != lastSelectionOwner[nxagentPrimarySelection].selection) &&
+ (X->xselectionrequest.selection != lastSelectionOwner[nxagentClipboardSelection].selection)))
+ {
+/*
+FIXME: Do we need this?
+
+ char *strTarget;
+
+ strTarget = XGetAtomName(nxagentDisplay, X->xselectionrequest.target);
+
+ fprintf(stderr, "SelectionRequest event aborting sele=[%s] target=[%s]\n",
+ validateString(NameForAtom(X->xselectionrequest.selection)),
+ validateString(NameForAtom(X->xselectionrequest.target)));
+
+ fprintf(stderr, "SelectionRequest event aborting sele=[%s] ext target=[%s] Atom size is [%d]\n",
+ validateString(NameForAtom(X->xselectionrequest.selection)), strTarget, sizeof(Atom));
+
+ if (strTarget != NULL)
+ {
+ XFree(strTarget);
+ }
+*/
+ eventSelection.property = None;
+
+ if (X->xselectionrequest.target == serverTARGETS)
+ {
+ Atom xa_STRING = XA_STRING;
+ result = XChangeProperty (nxagentDisplay,
+ X->xselectionrequest.requestor,
+ X->xselectionrequest.property,
+ X->xselectionrequest.target,
+ sizeof(Atom)*8,
+ PropModeReplace,
+ (unsigned char*)&xa_STRING,
+ 1);
+ eventSelection.property = X->xselectionrequest.property;
+ }
+
+ if (X->xselectionrequest.target == nxagentTimestampAtom)
+ {
+ while ((i < NumCurrentSelections) &&
+ lastSelectionOwner[i].selection != X->xselectionrequest.selection) i++;
+
+ if (i < NumCurrentSelections)
+ {
+ result = XChangeProperty(nxagentDisplay,
+ X->xselectionrequest.requestor,
+ X->xselectionrequest.property,
+ X->xselectionrequest.target,
+ 32,
+ PropModeReplace,
+ (unsigned char *) &lastSelectionOwner[i].lastTimeChanged,
+ 1);
+ eventSelection.property = X->xselectionrequest.property;
+ }
+ }
+
+ eventSelection.type = SelectionNotify;
+ eventSelection.send_event = True;
+ eventSelection.display = nxagentDisplay;
+ eventSelection.requestor = X->xselectionrequest.requestor;
+ eventSelection.selection = X->xselectionrequest.selection;
+ eventSelection.target = X->xselectionrequest.target;
+ eventSelection.time = X->xselectionrequest.time;
+
+ result = XSendEvent(nxagentDisplay,
+ eventSelection.requestor,
+ False,
+ 0L,
+ (XEvent *) &eventSelection);
+
+ #ifdef DEBUG
+ if (result == BadValue || result == BadWindow)
+ {
+ fprintf(stderr, "nxagentRequestSelection: WARNING! XSendEvent failed.\n");
+ }
+ else
+ {
+ fprintf(stderr, "nxagentRequestSelection: XSendEvent sent to window [0x%lx].\n",
+ eventSelection.requestor);
+ }
+ #endif
+
+ return;
+ }
+
+ /*
+ * This is necessary in nxagentGetClipboardWindow.
+ */
+
+ nxagentLastRequestedSelection = X->xselectionrequest.selection;
+
+ while ((i < nxagentMaxSelections) &&
+ (lastSelectionOwner[i].selection != X->xselectionrequest.selection))
+ {
+ i++;
+ }
+
+ if (i < nxagentMaxSelections)
+ {
+ if ((lastClientWindowPtr != NULL) && (lastSelectionOwner[i].client != NULL))
+ {
+ XConvertSelection(nxagentDisplay, CurrentSelections[i].selection,
+ X->xselectionrequest.target, serverCutProperty,
+ serverWindow, lastClientTime);
+
+ #ifdef DEBUG
+ fprintf(stderr, "nxagentRequestSelection: Sent XConvertSelection.\n");
+ #endif
+ }
+ else
+ {
+ if (lastSelectionOwner[i].client != NULL &&
+ nxagentOption(Clipboard) != ClipboardClient)
+ {
+ xEvent x;
+
+ lastServerProperty = X->xselectionrequest.property;
+ lastServerRequestor = X->xselectionrequest.requestor;
+ lastServerTarget = X->xselectionrequest.target;
+ lastServerTime = X->xselectionrequest.time;
+
+ x.u.u.type = SelectionRequest;
+ x.u.selectionRequest.time = GetTimeInMillis();
+ x.u.selectionRequest.owner = lastSelectionOwner[i].window;
+
+ /*
+ * Fictitious window.
+ */
+
+ x.u.selectionRequest.requestor = WindowTable[0]->drawable.id;
+
+ /*
+ * Don't send the same window, some programs are
+ * clever and verify cut and paste operations
+ * inside the same window and don't Notify at all.
+ *
+ * x.u.selectionRequest.requestor = lastSelectionOwnerWindow;
+ */
+
+ x.u.selectionRequest.selection = CurrentSelections[i].selection;
+
+ /*
+ * x.u.selectionRequest.target = X->xselectionrequest.target;
+ */
+
+ x.u.selectionRequest.target = XA_STRING;
+ x.u.selectionRequest.property = clientCutProperty;
+
+ (void) TryClientEvents(lastSelectionOwner[i].client, &x, 1,
+ NoEventMask, NoEventMask /* CantBeFiltered */,
+ NullGrab);
+
+ #ifdef DEBUG
+ fprintf(stderr, "nxagentRequestSelection: Executed TryClientEvents with clientCutProperty.\n");
+ #endif
+ }
+ else
+ {
+ /*
+ * Probably we must to send a Notify
+ * to requestor with property None.
+ */
+
+ eventSelection.type = SelectionNotify;
+ eventSelection.send_event = True;
+ eventSelection.display = nxagentDisplay;
+ eventSelection.requestor = X->xselectionrequest.requestor;
+ eventSelection.selection = X->xselectionrequest.selection;
+ eventSelection.target = X->xselectionrequest.target;
+ eventSelection.property = None;
+ eventSelection.time = X->xselectionrequest.time;
+
+ result = XSendEvent(nxagentDisplay,
+ eventSelection.requestor,
+ False,
+ 0L,
+ (XEvent *) &eventSelection);
+
+ #ifdef DEBUG
+ fprintf(stderr, "nxagentRequestSelection: Executed XSendEvent with property None.\n");
+ #endif
+ }
+ }
+ }
+}
+
+void nxagentSendSelectionNotify(Atom property)
+{
+ xEvent x;
+
+ #ifdef DEBUG
+ fprintf (stderr, "nxagentSendSelectionNotify: Sending event to client [%d].\n",
+ lastClientClientPtr -> index);
+ #endif
+
+ x.u.u.type = SelectionNotify;
+
+ x.u.selectionNotify.time = lastClientTime;
+ x.u.selectionNotify.requestor = lastClientRequestor;
+ x.u.selectionNotify.selection = lastClientSelection;
+ x.u.selectionNotify.target = lastClientTarget;
+
+ x.u.selectionNotify.property = property;
+
+ TryClientEvents(lastClientClientPtr, &x, 1, NoEventMask,
+ NoEventMask , NullGrab);
+
+ return;
+}
+
+void nxagentTransferSelection(int resource)
+{
+ int result;
+
+ if (lastClientClientPtr -> index != resource)
+ {
+ #ifdef DEBUG
+ fprintf (stderr, "nxagentTransferSelection: WARNING! Inconsistent resource [%d] with current client [%d].\n",
+ resource, lastClientClientPtr -> index);
+ #endif
+
+ nxagentSendSelectionNotify(None);
+
+ lastClientWindowPtr = NULL;
+ lastClientStage = SelectionStageNone;
+
+ return;
+ }
+
+ switch (lastClientStage)
+ {
+ case SelectionStageQuerySize:
+ {
+ /*
+ * Don't get data yet, just get size. We skip
+ * this stage in current implementation and
+ * go straight to the data.
+ */
+
+ nxagentLastClipboardClient = NXGetCollectPropertyResource(nxagentDisplay);
+
+ if (nxagentLastClipboardClient == -1)
+ {
+ #ifdef WARNING
+ fprintf(stderr, "nxagentTransferSelection: WARNING! Asyncronous GetProperty queue full.\n");
+ #endif
+
+ result = -1;
+ }
+ else
+ {
+ result = NXCollectProperty(nxagentDisplay,
+ nxagentLastClipboardClient,
+ serverWindow,
+ serverCutProperty,
+ 0,
+ 0,
+ False,
+ AnyPropertyType);
+ }
+
+ if (result == -1)
+ {
+ #ifdef DEBUG
+ fprintf (stderr, "nxagentTransferSelection: Aborting selection notify procedure for client [%d].\n",
+ lastClientClientPtr -> index);
+ #endif
+
+ nxagentSendSelectionNotify(None);
+
+ lastClientWindowPtr = NULL;
+ lastClientStage = SelectionStageNone;
+
+ return;
+ }
+
+ #ifdef DEBUG
+ fprintf (stderr, "nxagentTransferSelection: Setting stage to [%d] for client [%d].\n",
+ SelectionStageWaitSize, lastClientClientPtr -> index);
+ #endif
+
+ lastClientStage = SelectionStageWaitSize;
+
+ break;
+ }
+ case SelectionStageQueryData:
+ {
+ /*
+ * Request the selection data now.
+ */
+
+ #ifdef DEBUG
+ fprintf(stderr, "nxagentTransferSelection: Getting property content from remote server.\n");
+ #endif
+
+ nxagentLastClipboardClient = NXGetCollectPropertyResource(nxagentDisplay);
+
+ if (nxagentLastClipboardClient == -1)
+ {
+ #ifdef WARNING
+ fprintf(stderr, "nxagentTransferSelection: WARNING! Asyncronous GetProperty queue full.\n");
+ #endif
+
+ result = -1;
+ }
+ else
+ {
+ result = NXCollectProperty(nxagentDisplay,
+ nxagentLastClipboardClient,
+ serverWindow,
+ serverCutProperty,
+ 0,
+ lastClientPropertySize,
+ False,
+ AnyPropertyType);
+ }
+
+ if (result == -1)
+ {
+ #ifdef DEBUG
+ fprintf (stderr, "nxagentTransferSelection: Aborting selection notify procedure for client [%d].\n",
+ lastClientClientPtr -> index);
+ #endif
+
+ nxagentSendSelectionNotify(None);
+
+ lastClientWindowPtr = NULL;
+ lastClientStage = SelectionStageNone;
+
+ return;
+ }
+
+ #ifdef DEBUG
+ fprintf (stderr, "nxagentTransferSelection: Setting stage to [%d] for client [%d].\n",
+ SelectionStageWaitData, lastClientClientPtr -> index);
+ #endif
+
+ lastClientStage = SelectionStageWaitData;
+
+ break;
+ }
+ default:
+ {
+ #ifdef DEBUG
+ fprintf (stderr, "nxagentTransferSelection: WARNING! Inconsistent state [%d] for client [%d].\n",
+ lastClientStage, lastClientClientPtr -> index);
+ #endif
+
+ break;
+ }
+ }
+}
+
+void nxagentCollectPropertyEvent(int resource)
+{
+ Atom atomReturnType;
+ int resultFormat;
+ unsigned long ulReturnItems;
+ unsigned long ulReturnBytesLeft;
+ unsigned char *pszReturnData = NULL;
+ int result;
+
+ /*
+ * We have received the notification so
+ * we can safely retrieve data from the
+ * client structure.
+ */
+
+ result = NXGetCollectedProperty(nxagentDisplay,
+ resource,
+ &atomReturnType,
+ &resultFormat,
+ &ulReturnItems,
+ &ulReturnBytesLeft,
+ &pszReturnData);
+
+ nxagentLastClipboardClient = -1;
+
+ if (result == 0)
+ {
+ #ifdef DEBUG
+ fprintf (stderr, "nxagentCollectPropertyEvent: Failed to get reply data for client [%d].\n",
+ lastClientClientPtr -> index);
+ #endif
+
+ nxagentSendSelectionNotify(None);
+
+ lastClientWindowPtr = NULL;
+ lastClientStage = SelectionStageNone;
+
+ if (pszReturnData != NULL)
+ {
+ XFree(pszReturnData);
+ }
+
+ return;
+ }
+
+ switch (lastClientStage)
+ {
+ case SelectionStageWaitSize:
+ {
+ #ifdef DEBUG
+ fprintf (stderr, "nxagentCollectPropertyEvent: Got size notify event for client [%d].\n",
+ lastClientClientPtr -> index);
+ #endif
+
+ if (ulReturnBytesLeft == 0)
+ {
+ #ifdef DEBUG
+ fprintf (stderr, "nxagentCollectPropertyEvent: Aborting selection notify procedure for client [%d].\n",
+ lastClientClientPtr -> index);
+ #endif
+
+ nxagentSendSelectionNotify(None);
+
+ lastClientWindowPtr = NULL;
+ lastClientStage = SelectionStageNone;
+
+ if (pszReturnData != NULL)
+ {
+ Xfree(pszReturnData);
+ }
+
+ return;
+ }
+
+ #ifdef DEBUG
+ fprintf(stderr, "nxagentCollectPropertyEvent: Got property size from remote server.\n");
+ #endif
+
+ /*
+ * Request the selection data now.
+ */
+
+ lastClientPropertySize = ulReturnBytesLeft;
+ lastClientStage = SelectionStageQueryData;
+
+ nxagentTransferSelection(resource);
+
+ break;
+ }
+ case SelectionStageWaitData:
+ {
+ #ifdef DEBUG
+ fprintf (stderr, "nxagentCollectPropertyEvent: Got data notify event for client [%d].\n",
+ lastClientClientPtr -> index);
+ #endif
+
+ if (ulReturnBytesLeft != 0)
+ {
+ #ifdef DEBUG
+ fprintf (stderr, "nxagentCollectPropertyEvent: Aborting selection notify procedure for client [%d].\n",
+ lastClientClientPtr -> index);
+ #endif
+
+ nxagentSendSelectionNotify(None);
+
+ lastClientWindowPtr = NULL;
+ lastClientStage = SelectionStageNone;
+
+ if (pszReturnData != NULL)
+ {
+ Xfree(pszReturnData);
+ }
+
+ return;
+ }
+
+ #ifdef DEBUG
+ fprintf(stderr, "nxagentCollectPropertyEvent: Got property content from remote server.\n");
+ #endif
+
+ ChangeWindowProperty(lastClientWindowPtr,
+ lastClientProperty,
+ lastClientTarget,
+ resultFormat, PropModeReplace,
+ ulReturnItems, pszReturnData, 1);
+
+ #ifdef DEBUG
+ fprintf(stderr, "nxagentCollectPropertyEvent: Selection property [%s] changed to [%s]\n",
+ validateString(NameForAtom(lastClientProperty)), pszReturnData);
+ #endif
+
+ nxagentSendSelectionNotify(lastClientProperty);
+
+ /*
+ * Enable further requests from clients.
+ */
+
+ lastClientWindowPtr = NULL;
+ lastClientStage = SelectionStageNone;
+
+ break;
+ }
+ default:
+ {
+ #ifdef DEBUG
+ fprintf (stderr, "nxagentCollectPropertyEvent: WARNING! Inconsistent state [%d] for client [%d].\n",
+ lastClientStage, lastClientClientPtr -> index);
+ #endif
+
+ break;
+ }
+ }
+
+ XFree(pszReturnData);
+ pszReturnData = NULL;
+}
+
+void nxagentNotifySelection(XEvent *X)
+{
+ int result;
+
+ XSelectionEvent eventSelection;
+
+ #ifdef DEBUG
+ fprintf(stderr, "nxagentNotifySelection: Got called.\n");
+ #endif
+
+ if (agentClipboardStatus != 1)
+ {
+ return;
+ }
+
+ #ifdef DEBUG
+ fprintf(stderr, "nxagentNotifySelection: SelectionNotify event.\n");
+ #endif
+
+ if (lastClientWindowPtr != NULL)
+ {
+ if ((lastClientStage == SelectionStageNone) && (X->xselection.property == serverCutProperty))
+ {
+ #ifdef DEBUG
+ fprintf(stderr, "nxagentNotifySelection: Starting selection transferral for client [%d].\n",
+ lastClientClientPtr -> index);
+ #endif
+
+ /*
+ * The state machine is able to work in two phases. In the first
+ * phase we get the size of property data, in the second we get
+ * the actual data. We save a round-trip by requesting a prede-
+ * termined amount of data in a single GetProperty and by discar-
+ * ding the remaining part. This is not the optimal solution (we
+ * could get the remaining part if it doesn't fit in a single
+ * reply) but, at least with text, it should work in most situa-
+ * tions.
+ */
+
+ lastClientStage = SelectionStageQueryData;
+ lastClientPropertySize = 262144;
+
+ nxagentTransferSelection(lastClientClientPtr -> index);
+ }
+ else
+ {
+ #ifdef DEBUG
+ fprintf(stderr, "nxagentNotifySelection: WARNING! Resetting selection transferral for client [%d].\n",
+ lastClientClientPtr -> index);
+ #endif
+
+ nxagentSendSelectionNotify(None);
+
+ lastClientWindowPtr = NULL;
+ lastClientStage = SelectionStageNone;
+ }
+
+ return;
+ }
+ else
+ {
+ int i = 0;
+
+ while ((i < nxagentMaxSelections) && (lastSelectionOwner[i].selection != X->xselection.selection))
+ {
+ i++;
+ }
+
+ if (i < nxagentMaxSelections)
+ {
+ if ((lastSelectionOwner[i].client != NULL) &&
+ (lastSelectionOwner[i].windowPtr != NULL) &&
+ (X->xselection.property == clientCutProperty))
+ {
+ Atom atomReturnType;
+ int resultFormat;
+ unsigned long ulReturnItems;
+ unsigned long ulReturnBytesLeft;
+ unsigned char *pszReturnData = NULL;
+
+ result = GetWindowProperty(lastSelectionOwner[i].windowPtr, clientCutProperty, 0, 0, False,
+ AnyPropertyType, &atomReturnType, &resultFormat,
+ &ulReturnItems, &ulReturnBytesLeft, &pszReturnData);
+
+ if (result == BadAlloc || result == BadAtom ||
+ result == BadMatch || result == BadValue ||
+ result == BadWindow)
+ {
+ fprintf (stderr, "Client GetProperty failed error =");
+ lastServerProperty = None;
+ switch (result)
+ {
+ case BadAtom:
+ fprintf (stderr, "BadAtom\n");
+ break;
+ case BadValue:
+ fprintf (stderr, "BadValue\n");
+ break;
+ case BadWindow:
+ fprintf (stderr, "BadWindow\n");
+ break;
+ }
+ }
+ else
+ {
+ result = GetWindowProperty(lastSelectionOwner[i].windowPtr, clientCutProperty, 0,
+ ulReturnBytesLeft, False, AnyPropertyType, &atomReturnType,
+ &resultFormat, &ulReturnItems, &ulReturnBytesLeft,
+ &pszReturnData);
+
+ if (result == BadAlloc || result == BadAtom ||
+ result == BadMatch || result == BadValue ||
+ result == BadWindow)
+ {
+ fprintf (stderr, "SelectionNotify - XChangeProperty failed\n");
+
+ lastServerProperty = None;
+ }
+ else
+ {
+ result = XChangeProperty(nxagentDisplay,
+ lastServerRequestor,
+ lastServerProperty,
+ lastServerTarget,
+ 8,
+ PropModeReplace,
+ pszReturnData,
+ ulReturnItems);
+ }
+
+ /*
+ * if (pszReturnData)
+ * {
+ * free(pszReturnData);
+ * pszReturnData=NULL;
+ * }
+ */
+
+ }
+
+ eventSelection.type = SelectionNotify;
+ eventSelection.send_event = True;
+ eventSelection.display = nxagentDisplay;
+ eventSelection.requestor = lastServerRequestor;
+
+ eventSelection.selection = X->xselection.selection;
+
+ /*
+ * eventSelection.target = X->xselection.target;
+ */
+
+ eventSelection.target = lastServerTarget;
+ eventSelection.property = lastServerProperty;
+ eventSelection.time = lastServerTime;
+
+ /*
+ * eventSelection.time = CurrentTime;
+ * eventSelection.time = lastServerTime;
+ */
+
+ #ifdef DEBUG
+ fprintf(stderr, "nxagentNotifySelection: Sending event to requestor.\n");
+ #endif
+
+ result = XSendEvent(nxagentDisplay,
+ eventSelection.requestor,
+ False,
+ 0L,
+ (XEvent *) &eventSelection);
+
+ if (result == BadValue || result == BadWindow)
+ {
+ fprintf (stderr, "SelectionRequest - XSendEvent failed\n");
+ }
+
+ lastServerRequestor = None; /* allow further request */
+ }
+ }
+ }
+}
+
+/*
+ * Acquire selection so we don't get selection
+ * requests from real X clients.
+ */
+
+void nxagentResetSelectionOwner()
+{
+ int i;
+
+ if (lastServerRequestor != None)
+ {
+ #ifdef TEST
+ fprintf (stderr, "nxagentResetSelectionOwner: WARNING! Requestor window [0x%lx] already found.\n",
+ lastServerRequestor);
+ #endif
+
+ return;
+ }
+
+ /*
+ * Only for PRIMARY and CLIPBOARD selections.
+ */
+
+ for (i = 0; i < nxagentMaxSelections; i++)
+ {
+ XSetSelectionOwner(nxagentDisplay, lastSelectionOwner[i].selection, serverWindow, CurrentTime);
+
+ fprintf (stderr, "nxagentResetSelectionOwner: Reset clipboard state.\n");
+
+ lastSelectionOwner[i].client = NULL;
+ lastSelectionOwner[i].window = None;
+ lastSelectionOwner[i].windowPtr = NULL;
+ lastSelectionOwner[i].lastTimeChanged = GetTimeInMillis();
+ }
+
+ lastClientWindowPtr = NULL;
+ lastClientStage = SelectionStageNone;
+
+ lastServerRequestor = None;
+
+ return;
+}
+
+void nxagentSetSelectionOwner(Selection *pSelection)
+{
+ int i;
+ #ifdef DEBUG
+ fprintf(stderr, "nxagentSetSelectionOwner: Got called.\n");
+ #endif
+
+ if (agentClipboardStatus != 1)
+ {
+ return;
+ }
+
+ #ifdef DEBUG
+ fprintf(stderr, "nxagentSetSelectionOwner: Setting selection owner to window [0x%lx].\n",
+ serverWindow);
+ #endif
+
+ #ifdef TEST
+ if (lastServerRequestor != None)
+ {
+ fprintf (stderr, "nxagentSetSelectionOwner: WARNING! Requestor window [0x%lx] already found.\n",
+ lastServerRequestor);
+ }
+ #endif
+
+ /*
+ * Only for PRIMARY and CLIPBOARD selections.
+ */
+
+ for (i = 0; i < nxagentMaxSelections; i++)
+ {
+ if (pSelection->selection == CurrentSelections[i].selection)
+ {
+ XSetSelectionOwner(nxagentDisplay, lastSelectionOwner[i].selection, serverWindow, CurrentTime);
+
+ lastSelectionOwner[i].client = pSelection->client;
+ lastSelectionOwner[i].window = pSelection->window;
+ lastSelectionOwner[i].windowPtr = pSelection->pWin;
+ lastSelectionOwner[i].lastTimeChanged = GetTimeInMillis();
+ }
+ }
+
+ lastClientWindowPtr = NULL;
+ lastClientStage = SelectionStageNone;
+
+ lastServerRequestor = None;
+
+/*
+FIXME
+
+ if (XGetSelectionOwner(nxagentDisplay,pSelection->selection)==serverWindow)
+ {
+ fprintf (stderr, "NXdispatch: SetSelectionOwner OK\n");
+
+ lastSelectionOwnerSelection = pSelection;
+ lastSelectionOwnerClient = pSelection->client;
+ lastSelectionOwnerWindow = pSelection->window;
+ lastSelectionOwnerWindowPtr = pSelection->pWin;
+
+ lastClientWindowPtr = NULL;
+ lastClientStage = SelectionStageNone;
+
+ lastServerRequestor = None;
+ }
+ else fprintf (stderr, "nxagentSetSelectionOwner: SetSelectionOwner failed\n");
+*/
+}
+
+void nxagentNotifyConvertFailure(ClientPtr client, Window requestor,
+ Atom selection, Atom target, Time time)
+{
+ xEvent x;
+
+/*
+FIXME: Why this pointer can be not a valid
+ client pointer?
+*/
+ if (clients[client -> index] != client)
+ {
+ #ifdef WARNING
+ fprintf(stderr, "nxagentNotifyConvertFailure: WARNING! Invalid client pointer.");
+ #endif
+
+ return;
+ }
+
+ x.u.u.type = SelectionNotify;
+ x.u.selectionNotify.time = time;
+ x.u.selectionNotify.requestor = requestor;
+ x.u.selectionNotify.selection = selection;
+ x.u.selectionNotify.target = target;
+ x.u.selectionNotify.property = None;
+
+ (void) TryClientEvents(client, &x, 1, NoEventMask,
+ NoEventMask , NullGrab);
+}
+
+int nxagentConvertSelection(ClientPtr client, WindowPtr pWin, Atom selection,
+ Window requestor, Atom property, Atom target, Time time)
+{
+ char *strTarget;
+ int i;
+
+ if (agentClipboardStatus != 1 ||
+ nxagentOption(Clipboard) == ClipboardServer)
+ {
+ return 0;
+ }
+
+ /*
+ * There is a client owner on the agent side, let normal stuff happen.
+ */
+
+ /*
+ * Only for PRIMARY and CLIPBOARD selections.
+ */
+
+ for (i = 0; i < nxagentMaxSelections; i++)
+ {
+ if ((selection == CurrentSelections[i].selection) &&
+ (lastSelectionOwner[i].client != NULL))
+ {
+ return 0;
+ }
+ }
+
+ if (lastClientWindowPtr != NULL)
+ {
+ #ifdef TEST
+ fprintf(stderr, "nxagentConvertSelection: lastClientWindowPtr != NULL.\n");
+ #endif
+
+ if ((GetTimeInMillis() - lastClientReqTime) > 5000)
+ {
+ #ifdef DEBUG
+ fprintf(stderr, "nxagentConvertSelection: timeout expired on last request, "
+ "notifying failure to client\n");
+ #endif
+
+ nxagentNotifyConvertFailure(lastClientClientPtr, lastClientRequestor,
+ lastClientSelection, lastClientTarget, lastClientTime);
+
+ lastClientWindowPtr = NULL;
+ lastClientStage = SelectionStageNone;
+ }
+ else
+ {
+ #ifdef DEBUG
+ fprintf(stderr, "nxagentConvertSelection: got request "
+ "before timeout expired on last request, notifying failure to client\n");
+ #endif
+
+ nxagentNotifyConvertFailure(client, requestor, selection, target, time);
+
+ return 1;
+ }
+ }
+
+ #ifdef TEST
+ fprintf(stderr, "nxagentConvertSelection: client [%d] ask for sel [%s] "
+ "on window [%lx] prop [%s] target [%s].\n",
+ client -> index, validateString(NameForAtom(selection)), requestor,
+ validateString(NameForAtom(property)), validateString(NameForAtom(target)));
+ #endif
+
+ strTarget = NameForAtom(target);
+
+ if (strTarget == NULL)
+ {
+ return 1;
+ }
+
+ if (target == clientTARGETS)
+ {
+ Atom xa_STRING[3];
+ xEvent x;
+
+ xa_STRING[0] = XA_STRING;
+ xa_STRING[1] = clientTEXT;
+ xa_STRING[2] = clientCOMPOUND_TEXT;
+
+ ChangeWindowProperty(pWin,
+ property,
+ target,
+ sizeof(Atom)*8,
+ PropModeReplace,
+ 3,
+ &xa_STRING, 1);
+
+ x.u.u.type = SelectionNotify;
+ x.u.selectionNotify.time = time;
+ x.u.selectionNotify.requestor = requestor;
+ x.u.selectionNotify.selection = selection;
+ x.u.selectionNotify.target = target;
+ x.u.selectionNotify.property = property;
+
+ (void) TryClientEvents(client, &x, 1, NoEventMask,
+ NoEventMask , NullGrab);
+
+ return 1;
+ }
+
+ if (target == MakeAtom("TIMESTAMP", 9, 1))
+ {
+ xEvent x;
+ int i = 0;
+
+ while ((i < NumCurrentSelections) &&
+ CurrentSelections[i].selection != selection) i++;
+
+ if (i < NumCurrentSelections)
+ {
+ ChangeWindowProperty(pWin,
+ property,
+ target,
+ 32,
+ PropModeReplace,
+ 1,
+ (unsigned char *) &lastSelectionOwner[i].lastTimeChanged,
+ 1);
+
+ x.u.u.type = SelectionNotify;
+ x.u.selectionNotify.time = time;
+ x.u.selectionNotify.requestor = requestor;
+ x.u.selectionNotify.selection = selection;
+ x.u.selectionNotify.target = target;
+ x.u.selectionNotify.property = property;
+
+ (void) TryClientEvents(client, &x, 1, NoEventMask,
+ NoEventMask , NullGrab);
+
+ return 1;
+
+ }
+ }
+
+ if (lastClientClientPtr == client && (GetTimeInMillis() - lastClientReqTime < 5000))
+ {
+ /*
+ * The same client made consecutive requests
+ * of clipboard contents with less than 5
+ * seconds time interval between them.
+ */
+
+ #ifdef DEBUG
+ fprintf(stderr, "nxagentConvertSelection: Consecutives request from client [%p] selection [%ld] "
+ "elapsed time [%lu] clientAccum [%d]\n", (void *) client, selection,
+ GetTimeInMillis() - lastClientReqTime, clientAccum);
+ #endif
+
+ clientAccum++;
+ }
+ else
+ {
+ if (lastClientClientPtr != client)
+ {
+ clientAccum = 0;
+ }
+ }
+
+ if ((target == clientTEXT) || (target == XA_STRING) || (target == clientCOMPOUND_TEXT))
+ {
+ lastClientWindowPtr = pWin;
+ lastClientStage = SelectionStageNone;
+ lastClientRequestor = requestor;
+ lastClientClientPtr = client;
+ lastClientTime = time;
+ lastClientProperty = property;
+ lastClientSelection = selection;
+ lastClientTarget = target;
+
+ lastClientReqTime = (GetTimeInMillis() - lastClientReqTime) > 5000 ?
+ GetTimeInMillis() : lastClientReqTime;
+
+ if (selection == MakeAtom("CLIPBOARD", 9, 0))
+ {
+ selection = lastSelectionOwner[nxagentClipboardSelection].selection;
+ }
+
+ XConvertSelection(nxagentDisplay, selection, XA_STRING, serverCutProperty,
+ serverWindow, CurrentTime);
+
+ #ifdef DEBUG
+ fprintf(stderr, "nxagentConvertSelection: Sent XConvertSelection with target=[%s], property [%s]\n",
+ validateString(NameForAtom(target)), validateString(NameForAtom(property)));
+ #endif
+
+ return 1;
+ }
+ else
+ {
+ xEvent x;
+
+ #ifdef DEBUG
+ fprintf(stderr, "nxagentConvertSelection: Xserver generates a SelectionNotify event "
+ "to the requestor with property None.\n");
+ #endif
+
+ x.u.u.type = SelectionNotify;
+ x.u.selectionNotify.time = time;
+ x.u.selectionNotify.requestor = requestor;
+ x.u.selectionNotify.selection = selection;
+ x.u.selectionNotify.target = target;
+ x.u.selectionNotify.property = None;
+ (void) TryClientEvents(client, &x, 1, NoEventMask, NoEventMask , NullGrab);
+ return 1;
+ }
+ return 0;
+}
+
+int nxagentSendNotify(xEvent *event)
+{
+ #ifdef DEBUG
+ fprintf(stderr, "nxagentSendNotify: Got called.\n");
+ #endif
+
+ if (agentClipboardStatus != 1)
+ {
+ return 0;
+ }
+
+ if (event->u.selectionNotify.property == clientCutProperty)
+ {
+ XSelectionEvent x;
+ int result;
+
+ /*
+ * Setup selection notify event to real server.
+ */
+
+ x.type = SelectionNotify;
+ x.send_event = True;
+ x.display = nxagentDisplay;
+ x.requestor = serverWindow;
+
+ /*
+ * On real server, the right CLIPBOARD atom is
+ * XInternAtom(nxagentDisplay, "CLIPBOARD", 1).
+ */
+
+ if (event->u.selectionNotify.selection == MakeAtom("CLIPBOARD", 9, 0))
+ {
+ x.selection = lastSelectionOwner[nxagentClipboardSelection].selection;
+ }
+ else
+ {
+ x.selection = event->u.selectionNotify.selection;
+ }
+
+ x.target = event->u.selectionNotify.target;
+ x.property = event->u.selectionNotify.property;
+ x.time = CurrentTime;
+
+ #ifdef DEBUG
+ fprintf(stderr, "nxagentSendNotify: Propagating clientCutProperty.\n");
+ #endif
+
+ result = XSendEvent (nxagentDisplay, x.requestor, False,
+ 0L, (XEvent *) &x);
+
+ if (result == BadValue || result == BadWindow)
+ {
+ fprintf (stderr, "nxagentSendNotify: XSendEvent failed.\n");
+ }
+
+ return 1;
+ }
+
+ return 0;
+}
+
+WindowPtr nxagentGetClipboardWindow(Atom property, WindowPtr pWin)
+{
+ int i = 0;
+
+ #ifdef DEBUG
+ fprintf(stderr, "nxagentGetClipboardWindow: Got called.\n");
+ #endif
+
+ while ((i < nxagentMaxSelections) &&
+ (lastSelectionOwner[i].selection != nxagentLastRequestedSelection))
+ {
+ i++;
+ }
+
+ if ((i < nxagentMaxSelections) && (property == clientCutProperty) &&
+ (lastSelectionOwner[i].windowPtr != NULL))
+ {
+ #ifdef DEBUG
+ fprintf(stderr, "nxagentGetClipboardWindow: Returning last clipboard owner window.\n");
+ #endif
+
+ return lastSelectionOwner[i].windowPtr;
+ }
+ else
+ {
+ #ifdef DEBUG
+ fprintf(stderr, "nxagentGetClipboardWindow: Returning original target window.\n");
+ #endif
+
+ return pWin;
+ }
+
+}
+
+int nxagentInitClipboard(WindowPtr pWin)
+{
+ int i;
+ Window iWindow = nxagentWindow(pWin);
+
+ #ifdef DEBUG
+ fprintf(stderr, "nxagentInitClipboard: Got called.\n");
+ #endif
+
+ if (lastSelectionOwner != NULL)
+ {
+ xfree(lastSelectionOwner);
+ lastSelectionOwner = NULL;
+ }
+
+ lastSelectionOwner = (SelectionOwner *) xalloc(2 * sizeof(SelectionOwner));
+
+ if (lastSelectionOwner == NULL)
+ {
+ FatalError("nxagentInitClipboard: Failed to allocate memory for the clipboard selections.\n");
+ }
+
+ nxagentClipboardAtom = nxagentAtoms[10]; /* CLIPBOARD */
+ nxagentTimestampAtom = nxagentAtoms[11]; /* TIMESTAMP */
+
+ lastSelectionOwner[nxagentPrimarySelection].selection = XA_PRIMARY;
+ lastSelectionOwner[nxagentPrimarySelection].client = NullClient;
+ lastSelectionOwner[nxagentPrimarySelection].window = WindowTable[0]->drawable.id;
+ lastSelectionOwner[nxagentPrimarySelection].windowPtr = NULL;
+ lastSelectionOwner[nxagentPrimarySelection].lastTimeChanged = GetTimeInMillis();
+
+ lastSelectionOwner[nxagentClipboardSelection].selection = nxagentClipboardAtom;
+ lastSelectionOwner[nxagentClipboardSelection].client = NullClient;
+ lastSelectionOwner[nxagentClipboardSelection].window = WindowTable[0]->drawable.id;
+ lastSelectionOwner[nxagentClipboardSelection].windowPtr = NULL;
+ lastSelectionOwner[nxagentClipboardSelection].lastTimeChanged = GetTimeInMillis();
+
+ #ifdef NXAGENT_TIMESTAMP
+ {
+ extern unsigned long startTime;
+
+ fprintf(stderr, "nxagentInitClipboard: Initializing start [%d] milliseconds.\n",
+ GetTimeInMillis() - startTime);
+ }
+ #endif
+
+ agentClipboardStatus = 0;
+ serverWindow = iWindow;
+
+ /*
+ * Local property to hold pasted data.
+ */
+
+ serverCutProperty = nxagentAtoms[5]; /* NX_CUT_BUFFER_SERVER */
+ serverTARGETS = nxagentAtoms[6]; /* TARGETS */
+ serverTEXT = nxagentAtoms[7]; /* TEXT */
+
+ if (serverCutProperty == None)
+ {
+ #ifdef PANIC
+ fprintf(stderr, "nxagentInitClipboard: PANIC! Could not create NX_CUT_BUFFER_SERVER atom\n");
+ #endif
+
+ return -1;
+ }
+
+ #ifdef TEST
+ fprintf(stderr, "nxagentInitClipboard: Setting owner of selection [%s][%d] on window 0x%lx\n",
+ "NX_CUT_BUFFER_SERVER", (int) serverCutProperty, iWindow);
+ #endif
+
+ XSetSelectionOwner(nxagentDisplay, serverCutProperty, iWindow, CurrentTime);
+
+ if (nxagentSessionId[0])
+ {
+ #ifdef TEST
+ fprintf(stderr, "nxagentInitClipboard: setting the ownership of %s to %lx"
+ " and registering for PropertyChangeMask events\n",
+ validateString(XGetAtomName(nxagentDisplay, nxagentAtoms[10])), iWindow);
+ #endif
+
+ XSetSelectionOwner(nxagentDisplay, nxagentAtoms[10], iWindow, CurrentTime);
+ pWin -> eventMask |= PropertyChangeMask;
+ nxagentChangeWindowAttributes(pWin, CWEventMask);
+ }
+
+ if (nxagentReconnectTrap)
+ {
+ /*
+ * Only for PRIMARY and CLIPBOARD selections.
+ */
+
+ for (i = 0; i < nxagentMaxSelections; i++)
+ {
+ if (lastSelectionOwner[i].client && lastSelectionOwner[i].window)
+ {
+ XSetSelectionOwner(nxagentDisplay, lastSelectionOwner[i].selection, iWindow, CurrentTime);
+ }
+ }
+ }
+ else
+ {
+ lastSelectionOwner[nxagentPrimarySelection].client = NULL;
+ lastSelectionOwner[nxagentClipboardSelection].client = NULL;
+
+ lastServerRequestor = None;
+
+ lastClientWindowPtr = NULL;
+ lastClientStage = SelectionStageNone;
+ lastClientReqTime = GetTimeInMillis();
+
+ clientCutProperty = MakeAtom(szAgentNX_CUT_BUFFER_CLIENT,
+ strlen(szAgentNX_CUT_BUFFER_CLIENT), 1);
+ clientTARGETS = MakeAtom(szAgentTARGETS, strlen(szAgentTARGETS), True);
+ clientTEXT = MakeAtom(szAgentTEXT, strlen(szAgentTEXT), True);
+ clientCOMPOUND_TEXT = MakeAtom(szAgentCOMPOUND_TEXT, strlen(szAgentCOMPOUND_TEXT), True);
+
+ if (clientCutProperty == None)
+ {
+ #ifdef PANIC
+ fprintf(stderr, "nxagentInitClipboard: PANIC! "
+ "Could not create NX_CUT_BUFFER_CLIENT atom.\n");
+ #endif
+
+ return -1;
+ }
+ }
+
+ agentClipboardStatus = 1;
+
+ #ifdef DEBUG
+ fprintf(stderr, "nxagentInitClipboard: Clipboard initialization completed.\n");
+ #endif
+
+ #ifdef NXAGENT_TIMESTAMP
+ {
+ extern unsigned long startTime;
+
+ fprintf(stderr, "nxagentInitClipboard: initializing ends [%d] milliseconds.\n",
+ GetTimeInMillis() - startTime);
+ }
+ #endif
+
+ return 1;
+}
+
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-23 04:36:56 +0000