From 20120205bb93b1195b59b68e452f90a6e394075c Mon Sep 17 00:00:00 2001
From: Ulrich Sibiller <uli42@gmx.de>
Date: Mon, 18 Nov 2019 01:11:26 +0100
Subject: Clipboard.c: Fix: re-claim selection on reconnect

On reconnect claim the selection ownership if one of nxagent's clients
is a selection owner. The code for this was already there but could
not work because the lastSelectionOwner array was always dropped at
the beginning of nxagentInitClipboard.
---
 nx-X11/programs/Xserver/hw/nxagent/Clipboard.c | 48 +++++++++++++++-----------
 1 file changed, 28 insertions(+), 20 deletions(-)

(limited to 'nx-X11/programs/Xserver/hw/nxagent/Clipboard.c')

diff --git a/nx-X11/programs/Xserver/hw/nxagent/Clipboard.c b/nx-X11/programs/Xserver/hw/nxagent/Clipboard.c
index 69cc7ecc5..a3d8fb5c1 100644
--- a/nx-X11/programs/Xserver/hw/nxagent/Clipboard.c
+++ b/nx-X11/programs/Xserver/hw/nxagent/Clipboard.c
@@ -2127,19 +2127,26 @@ Bool nxagentInitClipboard(WindowPtr pWin)
   fprintf(stderr, "%s: Got called.\n", __func__);
   #endif
 
-  SAFE_free(lastSelectionOwner);
+  if (!nxagentReconnectTrap)
+  {
+    SAFE_free(lastSelectionOwner);
 
-  lastSelectionOwner = (SelectionOwner *) malloc(nxagentMaxSelections * sizeof(SelectionOwner));
+    lastSelectionOwner = (SelectionOwner *) malloc(nxagentMaxSelections * sizeof(SelectionOwner));
 
-  if (lastSelectionOwner == NULL)
+    if (lastSelectionOwner == NULL)
+    {
+      FatalError("nxagentInitClipboard: Failed to allocate memory for the clipboard selections.\n");
+    }
+    nxagentInitSelectionOwner(nxagentPrimarySelection, XA_PRIMARY);
+    nxagentInitSelectionOwner(nxagentClipboardSelection, nxagentAtoms[10]);   /* CLIPBOARD */
+  }
+  else
   {
-    FatalError("nxagentInitClipboard: Failed to allocate memory for the clipboard selections.\n");
+    /* the clipboard selection atom might have changed on the new X
+       server. Primary is constant. */
+    lastSelectionOwner[nxagentClipboardSelection].selection = nxagentAtoms[10];   /* CLIPBOARD */
   }
 
-
-  nxagentInitSelectionOwner(nxagentPrimarySelection, XA_PRIMARY);
-  nxagentInitSelectionOwner(nxagentClipboardSelection, nxagentAtoms[10]);   /* CLIPBOARD */
-
   #ifdef NXAGENT_TIMESTAMP
   {
     fprintf(stderr, "%s: Initializing start [%ld] milliseconds.\n", __func__,
@@ -2229,22 +2236,23 @@ Bool nxagentInitClipboard(WindowPtr pWin)
 
   if (nxagentReconnectTrap)
   {
-    /*
-     * Only for PRIMARY and CLIPBOARD selections.
-     */
-
-    for (int i = 0; i < nxagentMaxSelections; i++)
+    if (nxagentOption(Clipboard) == ClipboardServer ||
+	nxagentOption(Clipboard) == ClipboardBoth)
     {
-      /*
-       * if we have a selection inform the (new) real Xserver and
-       * claim the ownership. Note that we report our serverWindow as
-       * owner, not the real window!
-       */
-      if (lastSelectionOwner[i].client && lastSelectionOwner[i].window)
+      for (int i = 0; i < nxagentMaxSelections; i++)
       {
-        XSetSelectionOwner(nxagentDisplay, lastSelectionOwner[i].selection, serverWindow, CurrentTime);
+        /*
+         * if we have a selection inform the (new) real Xserver and
+         * claim the ownership. Note that we report our serverWindow as
+         * owner, not the real window!
+         */
+         if (lastSelectionOwner[i].client && lastSelectionOwner[i].window)
+         {
+           XSetSelectionOwner(nxagentDisplay, lastSelectionOwner[i].selection, serverWindow, CurrentTime);
+         }
       }
     }
+    /* FIXME: Shouldn't we reset lastServer* and lastClient* here? */
   }
   else
   {
-- 
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