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-rw-r--r--xorg-server/hw/xwin/winclipboardwrappers.c1021
1 files changed, 494 insertions, 527 deletions
diff --git a/xorg-server/hw/xwin/winclipboardwrappers.c b/xorg-server/hw/xwin/winclipboardwrappers.c
index 658d050d2..172365d27 100644
--- a/xorg-server/hw/xwin/winclipboardwrappers.c
+++ b/xorg-server/hw/xwin/winclipboardwrappers.c
@@ -1,527 +1,494 @@
-/*
- *Copyright (C) 2003-2004 Harold L Hunt II All Rights Reserved.
- *Copyright (C) Colin Harrison 2005-2008
- *
- *Permission is hereby granted, free of charge, to any person obtaining
- * a copy of this software and associated documentation files (the
- *"Software"), to deal in the Software without restriction, including
- *without limitation the rights to use, copy, modify, merge, publish,
- *distribute, sublicense, and/or sell copies of the Software, and to
- *permit persons to whom the Software is furnished to do so, subject to
- *the following conditions:
- *
- *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 HAROLD L HUNT II 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 copyright holder(s)
- *and author(s) 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 copyright holder(s) and author(s).
- *
- * Authors: Harold L Hunt II
- * Colin Harrison
- */
-
-#ifdef HAVE_XWIN_CONFIG_H
-#include <xwin-config.h>
-#endif
-#include "win.h"
-#include "dixstruct.h"
-#include <X11/Xatom.h>
-
-
-/*
- * Constants
- */
-
-#define CLIP_NUM_CALLS 4
-#define CLIP_NUM_SELECTIONS 2
-#define CLIP_OWN_PRIMARY 0
-#define CLIP_OWN_CLIPBOARD 1
-
-
-/*
- * Local function prototypes
- */
-
-DISPATCH_PROC(winProcEstablishConnection);
-DISPATCH_PROC(winProcQueryTree);
-DISPATCH_PROC(winProcSetSelectionOwner);
-
-
-/*
- * References to external symbols
- */
-
-extern Bool g_fUnicodeSupport;
-extern int g_iNumScreens;
-extern unsigned int g_uiAuthDataLen;
-extern char *g_pAuthData;
-extern Bool g_fXdmcpEnabled;
-extern Bool g_fClipboardLaunched;
-extern Bool g_fClipboardStarted;
-extern Bool g_fClipboard;
-extern Window g_iClipboardWindow;
-extern Atom g_atomLastOwnedSelection;
-extern HWND g_hwndClipboard;
-
-extern winDispatchProcPtr winProcEstablishConnectionOrig;
-extern winDispatchProcPtr winProcQueryTreeOrig;
-extern winDispatchProcPtr winProcSetSelectionOwnerOrig;
-
-
-/*
- * Wrapper for internal QueryTree function.
- * Hides the clipboard client when it is the only client remaining.
- */
-
-int
-winProcQueryTree (ClientPtr client)
-{
- int iReturn;
-
- ErrorF ("winProcQueryTree - Hello\n");
-
- /*
- * This procedure is only used for initialization.
- * We can unwrap the original procedure at this point
- * so that this function is no longer called until the
- * server resets and the function is wrapped again.
- */
- ProcVector[X_QueryTree] = winProcQueryTreeOrig;
-
- /*
- * Call original function and bail if it fails.
- * NOTE: We must do this first, since we need XdmcpOpenDisplay
- * to be called before we initialize our clipboard client.
- */
- iReturn = (*winProcQueryTreeOrig) (client);
- if (iReturn != 0)
- {
- ErrorF ("winProcQueryTree - ProcQueryTree failed, bailing.\n");
- return iReturn;
- }
-
- /* Make errors more obvious */
- winProcQueryTreeOrig = NULL;
-
- /* Do nothing if clipboard is not enabled */
- if (!g_fClipboard)
- {
- ErrorF ("winProcQueryTree - Clipboard is not enabled, "
- "returning.\n");
- return iReturn;
- }
-
- /* If the clipboard client has already been started, abort */
- if (g_fClipboardLaunched)
- {
- ErrorF ("winProcQueryTree - Clipboard client already "
- "launched, returning.\n");
- return iReturn;
- }
-
- /* Startup the clipboard client if clipboard mode is being used */
- if (g_fXdmcpEnabled && g_fClipboard)
- {
- /*
- * NOTE: The clipboard client is started here for a reason:
- * 1) Assume you are using XDMCP (e.g. XWin -query %hostname%)
- * 2) If the clipboard client attaches during X Server startup,
- * then it becomes the "magic client" that causes the X Server
- * to reset if it exits.
- * 3) XDMCP calls KillAllClients when it starts up.
- * 4) The clipboard client is a client, so it is killed.
- * 5) The clipboard client is the "magic client", so the X Server
- * resets itself.
- * 6) This repeats ad infinitum.
- * 7) We avoid this by waiting until at least one client (could
- * be XDM, could be another client) connects, which makes it
- * almost certain that the clipboard client will not connect
- * until after XDM when using XDMCP.
- * 8) Unfortunately, there is another problem.
- * 9) XDM walks the list of windows with XQueryTree,
- * killing any client it finds with a window.
- * 10)Thus, when using XDMCP we wait until the first call
- * to ProcQueryTree before we startup the clipboard client.
- * This should prevent XDM from finding the clipboard client,
- * since it has not yet created a window.
- * 11)Startup when not using XDMCP is handled in
- * winProcEstablishConnection.
- */
-
- /* Create the clipboard client thread */
- if (!winInitClipboard ())
- {
- ErrorF ("winProcQueryTree - winClipboardInit "
- "failed.\n");
- return iReturn;
- }
-
- ErrorF ("winProcQueryTree - winInitClipboard returned.\n");
- }
-
- /* Flag that clipboard client has been launched */
- g_fClipboardLaunched = TRUE;
-
- return iReturn;
-}
-
-
-/*
- * Wrapper for internal EstablishConnection function.
- * Initializes internal clients that must not be started until
- * an external client has connected.
- */
-
-int
-winProcEstablishConnection (ClientPtr client)
-{
- int iReturn;
- static int s_iCallCount = 0;
- static unsigned long s_ulServerGeneration = 0;
-
- if (s_iCallCount == 0 || s_iCallCount == CLIP_NUM_CALLS) ErrorF ("winProcEstablishConnection - Hello\n");
-
- /* Do nothing if clipboard is not enabled */
- if (!g_fClipboard)
- {
- ErrorF ("winProcEstablishConnection - Clipboard is not enabled, "
- "returning.\n");
-
- /* Unwrap the original function, call it, and return */
- InitialVector[2] = winProcEstablishConnectionOrig;
- iReturn = (*winProcEstablishConnectionOrig) (client);
- winProcEstablishConnectionOrig = NULL;
- return iReturn;
- }
-
- /* Watch for server reset */
- if (s_ulServerGeneration != serverGeneration)
- {
- /* Save new generation number */
- s_ulServerGeneration = serverGeneration;
-
- /* Reset call count */
- s_iCallCount = 0;
- }
-
- /* Increment call count */
- ++s_iCallCount;
-
- /* Wait for CLIP_NUM_CALLS when Xdmcp is enabled */
- if (g_fXdmcpEnabled
- && !g_fClipboardLaunched
- && s_iCallCount < CLIP_NUM_CALLS)
- {
- if (s_iCallCount == 1) ErrorF ("winProcEstablishConnection - Xdmcp, waiting to "
- "start clipboard client until %dth call", CLIP_NUM_CALLS);
- if (s_iCallCount == CLIP_NUM_CALLS - 1) ErrorF (".\n");
- else ErrorF (".");
- return (*winProcEstablishConnectionOrig) (client);
- }
-
- /*
- * This procedure is only used for initialization.
- * We can unwrap the original procedure at this point
- * so that this function is no longer called until the
- * server resets and the function is wrapped again.
- */
- InitialVector[2] = winProcEstablishConnectionOrig;
-
- /*
- * Call original function and bail if it fails.
- * NOTE: We must do this first, since we need XdmcpOpenDisplay
- * to be called before we initialize our clipboard client.
- */
- iReturn = (*winProcEstablishConnectionOrig) (client);
- if (iReturn != 0)
- {
- ErrorF ("winProcEstablishConnection - ProcEstablishConnection "
- "failed, bailing.\n");
- return iReturn;
- }
-
- /* Clear original function pointer */
- winProcEstablishConnectionOrig = NULL;
-
- /* If the clipboard client has already been started, abort */
- if (g_fClipboardLaunched)
- {
- ErrorF ("winProcEstablishConnection - Clipboard client already "
- "launched, returning.\n");
- return iReturn;
- }
-
- /* Startup the clipboard client if clipboard mode is being used */
- if (g_fClipboard)
- {
- /*
- * NOTE: The clipboard client is started here for a reason:
- * 1) Assume you are using XDMCP (e.g. XWin -query %hostname%)
- * 2) If the clipboard client attaches during X Server startup,
- * then it becomes the "magic client" that causes the X Server
- * to reset if it exits.
- * 3) XDMCP calls KillAllClients when it starts up.
- * 4) The clipboard client is a client, so it is killed.
- * 5) The clipboard client is the "magic client", so the X Server
- * resets itself.
- * 6) This repeats ad infinitum.
- * 7) We avoid this by waiting until at least one client (could
- * be XDM, could be another client) connects, which makes it
- * almost certain that the clipboard client will not connect
- * until after XDM when using XDMCP.
- * 8) Unfortunately, there is another problem.
- * 9) XDM walks the list of windows with XQueryTree,
- * killing any client it finds with a window.
- * 10)Thus, when using XDMCP we wait until CLIP_NUM_CALLS
- * to ProcEstablishCeonnection before we startup the clipboard
- * client. This should prevent XDM from finding the clipboard
- * client, since it has not yet created a window.
- */
-
- /* Create the clipboard client thread */
- if (!winInitClipboard ())
- {
- ErrorF ("winProcEstablishConnection - winClipboardInit "
- "failed.\n");
- return iReturn;
- }
-
- ErrorF ("winProcEstablishConnection - winInitClipboard returned.\n");
- }
-
- /* Flag that clipboard client has been launched */
- g_fClipboardLaunched = TRUE;
-
- return iReturn;
-}
-
-
-/*
- * Wrapper for internal SetSelectionOwner function.
- * Grabs ownership of Windows clipboard when X11 clipboard owner changes.
- */
-
-int
-winProcSetSelectionOwner (ClientPtr client)
-{
- int i;
- DrawablePtr pDrawable;
- WindowPtr pWindow = None;
- Bool fOwnedToNotOwned = FALSE;
- static Window s_iOwners[CLIP_NUM_SELECTIONS] = {None};
- static unsigned long s_ulServerGeneration = 0;
- REQUEST(xSetSelectionOwnerReq);
-
- REQUEST_SIZE_MATCH(xSetSelectionOwnerReq);
-
- winDebug("winProcSetSelectionOwner - Hello.\n");
-
- /* Watch for server reset */
- if (s_ulServerGeneration != serverGeneration)
- {
- /* Save new generation number */
- s_ulServerGeneration = serverGeneration;
-
- /* Initialize static variables */
- for (i = 0; i < CLIP_NUM_SELECTIONS; ++i)
- s_iOwners[i] = None;
- }
-
- /* Abort if clipboard not completely initialized yet */
- if (!g_fClipboardStarted)
- {
- /* ErrorF ("winProcSetSelectionOwner - Clipboard not yet started, "
- "aborting.\n"); */
- goto winProcSetSelectionOwner_Done;
- }
-
- /* Grab window if we have one */
- if (None != stuff->window)
- {
- /* Grab the Window from the request */
- int rc = dixLookupWindow(&pWindow, stuff->window, client, DixReadAccess);
- if (rc != Success) {
- ErrorF ("winProcSetSelectionOwner - Found BadWindow, aborting.\n");
- goto winProcSetSelectionOwner_Done;
- }
- }
-
- /* Now we either have a valid window or None */
-
- /* Save selection owners for monitored selections, ignore other selections */
- if (XA_PRIMARY == stuff->selection)
- {
- /* Look for owned -> not owned transition */
- if (None == stuff->window
- && None != s_iOwners[CLIP_OWN_PRIMARY])
- {
- fOwnedToNotOwned = TRUE;
-
- winDebug("winProcSetSelectionOwner - PRIMARY - Going from "
- "owned to not owned.\n");
-
- /* Adjust last owned selection */
- if (None != s_iOwners[CLIP_OWN_CLIPBOARD])
- g_atomLastOwnedSelection = MakeAtom ("CLIPBOARD", 9, TRUE);
- else
- g_atomLastOwnedSelection = None;
- }
-
- /* Save new selection owner or None */
- s_iOwners[CLIP_OWN_PRIMARY] = stuff->window;
-
- winDebug("winProcSetSelectionOwner - PRIMARY - Now owned by: %d\n",
- stuff->window);
- }
- else if (MakeAtom ("CLIPBOARD", 9, TRUE) == stuff->selection)
- {
- /* Look for owned -> not owned transition */
- if (None == stuff->window
- && None != s_iOwners[CLIP_OWN_CLIPBOARD])
- {
- fOwnedToNotOwned = TRUE;
-
- winDebug("winProcSetSelectionOwner - CLIPBOARD - Going from "
- "owned to not owned.\n");
-
- /* Adjust last owned selection */
- if (None != s_iOwners[CLIP_OWN_PRIMARY])
- g_atomLastOwnedSelection = XA_PRIMARY;
- else
- g_atomLastOwnedSelection = None;
- }
-
- /* Save new selection owner or None */
- s_iOwners[CLIP_OWN_CLIPBOARD] = stuff->window;
-
- winDebug("winProcSetSelectionOwner - CLIPBOARD - Now owned by: %d\n",
- stuff->window);
-
- }
- else
- goto winProcSetSelectionOwner_Done;
-
- /*
- * At this point, if one of the selections is still owned by the
- * clipboard manager then it should be marked as unowned since
- * we will be taking ownership of the Win32 clipboard.
- */
- if (g_iClipboardWindow == s_iOwners[CLIP_OWN_PRIMARY])
- s_iOwners[CLIP_OWN_PRIMARY] = None;
- if (g_iClipboardWindow == s_iOwners[CLIP_OWN_CLIPBOARD])
- s_iOwners[CLIP_OWN_CLIPBOARD] = None;
-
- /*
- * Handle case when selection is being disowned,
- * WM_DRAWCLIPBOARD did not do the disowning,
- * both monitored selections are no longer owned,
- * an owned to not owned transition was detected,
- * and we currently own the Win32 clipboard.
- */
- if (stuff->window == None
- && s_iOwners[CLIP_OWN_PRIMARY] == None
- && s_iOwners[CLIP_OWN_CLIPBOARD] == None
- && fOwnedToNotOwned
- && g_hwndClipboard != NULL
- && g_hwndClipboard == GetClipboardOwner ())
- {
- winDebug("winProcSetSelectionOwner - We currently own the "
- "clipboard and neither the PRIMARY nor the CLIPBOARD "
- "selections are owned, releasing ownership of Win32 "
- "clipboard.\n");
-
- /* Release ownership of the Windows clipboard */
- OpenClipboard (NULL);
- EmptyClipboard ();
- CloseClipboard ();
-
- goto winProcSetSelectionOwner_Done;
- }
-
- /* Abort if no window at this point */
- if (None == stuff->window)
- {
- winDebug("winProcSetSelectionOwner - No window, returning.\n");
- goto winProcSetSelectionOwner_Done;
- }
-
- /* Abort if invalid selection */
- if (!ValidAtom (stuff->selection))
- {
- ErrorF ("winProcSetSelectionOwner - Found BadAtom, aborting.\n");
- goto winProcSetSelectionOwner_Done;
- }
-
- /* Cast Window to Drawable */
- pDrawable = (DrawablePtr) pWindow;
-
- /* Abort if clipboard manager is owning the selection */
- if (pDrawable->id == g_iClipboardWindow)
- {
- winDebug("winProcSetSelectionOwner - We changed ownership, "
- "aborting.\n");
- goto winProcSetSelectionOwner_Done;
- }
-
- /* Abort if root window is taking ownership */
- if (pDrawable->id == 0)
- {
- ErrorF ("winProcSetSelectionOwner - Root window taking ownership, "
- "aborting\n");
- goto winProcSetSelectionOwner_Done;
- }
-
- /* Close clipboard if we have it open already */
- if (GetOpenClipboardWindow () == g_hwndClipboard)
- {
- CloseClipboard ();
- }
-
- /* Access the Windows clipboard */
- if (!OpenClipboard (g_hwndClipboard))
- {
- ErrorF ("winProcSetSelectionOwner - OpenClipboard () failed: %08x\n",
- (int) GetLastError ());
- goto winProcSetSelectionOwner_Done;
- }
-
- /* Take ownership of the Windows clipboard */
- if (!EmptyClipboard ())
- {
- ErrorF ("winProcSetSelectionOwner - EmptyClipboard () failed: %08x\n",
- (int) GetLastError ());
- goto winProcSetSelectionOwner_Done;
- }
-
- /* Advertise Unicode if we support it */
- if (g_fUnicodeSupport)
- SetClipboardData (CF_UNICODETEXT, NULL);
-
- /* Always advertise regular text */
- SetClipboardData (CF_TEXT, NULL);
-
- /* Save handle to last owned selection */
- g_atomLastOwnedSelection = stuff->selection;
-
- /* Release the clipboard */
- if (!CloseClipboard ())
- {
- ErrorF ("winProcSetSelectionOwner - CloseClipboard () failed: "
- "%08x\n",
- (int) GetLastError ());
- goto winProcSetSelectionOwner_Done;
- }
-
- winProcSetSelectionOwner_Done:
- return (*winProcSetSelectionOwnerOrig) (client);
-}
+/*
+ *Copyright (C) 2003-2004 Harold L Hunt II All Rights Reserved.
+ *Copyright (C) Colin Harrison 2005-2008
+ *
+ *Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ *"Software"), to deal in the Software without restriction, including
+ *without limitation the rights to use, copy, modify, merge, publish,
+ *distribute, sublicense, and/or sell copies of the Software, and to
+ *permit persons to whom the Software is furnished to do so, subject to
+ *the following conditions:
+ *
+ *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 HAROLD L HUNT II 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 copyright holder(s)
+ *and author(s) 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 copyright holder(s) and author(s).
+ *
+ * Authors: Harold L Hunt II
+ * Colin Harrison
+ */
+
+#ifdef HAVE_XWIN_CONFIG_H
+#include <xwin-config.h>
+#endif
+#include "win.h"
+#include "dixstruct.h"
+#include <X11/Xatom.h>
+
+
+/*
+ * Constants
+ */
+
+#define CLIP_NUM_CALLS 4
+#define CLIP_NUM_SELECTIONS 2
+#define CLIP_OWN_PRIMARY 0
+#define CLIP_OWN_CLIPBOARD 1
+
+
+/*
+ * Local function prototypes
+ */
+
+DISPATCH_PROC(winProcEstablishConnection);
+DISPATCH_PROC(winProcQueryTree);
+DISPATCH_PROC(winProcSetSelectionOwner);
+
+
+/*
+ * References to external symbols
+ */
+
+extern Bool g_fUnicodeSupport;
+extern int g_iNumScreens;
+extern unsigned int g_uiAuthDataLen;
+extern char *g_pAuthData;
+extern Bool g_fXdmcpEnabled;
+extern Bool g_fClipboardLaunched;
+extern Bool g_fClipboardStarted;
+extern Bool g_fClipboard;
+extern Window g_iClipboardWindow;
+extern Atom g_atomLastOwnedSelection;
+extern HWND g_hwndClipboard;
+
+extern winDispatchProcPtr winProcEstablishConnectionOrig;
+extern winDispatchProcPtr winProcQueryTreeOrig;
+extern winDispatchProcPtr winProcSetSelectionOwnerOrig;
+
+
+/*
+ * Wrapper for internal QueryTree function.
+ * Hides the clipboard client when it is the only client remaining.
+ */
+
+int
+winProcQueryTree (ClientPtr client)
+{
+ int iReturn;
+
+ winDebug ("winProcQueryTree - Hello\n");
+
+ /*
+ * This procedure is only used for initialization.
+ * We can unwrap the original procedure at this point
+ * so that this function is no longer called until the
+ * server resets and the function is wrapped again.
+ */
+ ProcVector[X_QueryTree] = winProcQueryTreeOrig;
+
+ /*
+ * Call original function and bail if it fails.
+ * NOTE: We must do this first, since we need XdmcpOpenDisplay
+ * to be called before we initialize our clipboard client.
+ */
+ iReturn = (*winProcQueryTreeOrig) (client);
+ if (iReturn != 0)
+ {
+ ErrorF ("winProcQueryTree - ProcQueryTree failed, bailing.\n");
+ return iReturn;
+ }
+
+ /* Make errors more obvious */
+ winProcQueryTreeOrig = NULL;
+
+ /* Do nothing if clipboard is not enabled */
+ if (!g_fClipboard)
+ {
+ winDebug ("winProcQueryTree - Clipboard is not enabled, "
+ "returning.\n");
+ return iReturn;
+ }
+
+ /* If the clipboard client has already been started, abort */
+ if (g_fClipboardLaunched)
+ {
+ winDebug ("winProcQueryTree - Clipboard client already "
+ "launched, returning.\n");
+ return iReturn;
+ }
+
+ /* Startup the clipboard client if clipboard mode is being used */
+ if (g_fXdmcpEnabled && g_fClipboard)
+ {
+ /*
+ * NOTE: The clipboard client is started here for a reason:
+ * 1) Assume you are using XDMCP (e.g. XWin -query %hostname%)
+ * 2) If the clipboard client attaches during X Server startup,
+ * then it becomes the "magic client" that causes the X Server
+ * to reset if it exits.
+ * 3) XDMCP calls KillAllClients when it starts up.
+ * 4) The clipboard client is a client, so it is killed.
+ * 5) The clipboard client is the "magic client", so the X Server
+ * resets itself.
+ * 6) This repeats ad infinitum.
+ * 7) We avoid this by waiting until at least one client (could
+ * be XDM, could be another client) connects, which makes it
+ * almost certain that the clipboard client will not connect
+ * until after XDM when using XDMCP.
+ * 8) Unfortunately, there is another problem.
+ * 9) XDM walks the list of windows with XQueryTree,
+ * killing any client it finds with a window.
+ * 10)Thus, when using XDMCP we wait until the first call
+ * to ProcQueryTree before we startup the clipboard client.
+ * This should prevent XDM from finding the clipboard client,
+ * since it has not yet created a window.
+ * 11)Startup when not using XDMCP is handled in
+ * winProcEstablishConnection.
+ */
+
+ /* Create the clipboard client thread */
+ if (!winInitClipboard ())
+ {
+ ErrorF ("winProcQueryTree - winClipboardInit "
+ "failed.\n");
+ return iReturn;
+ }
+
+ winDebug ("winProcQueryTree - winInitClipboard returned.\n");
+ }
+
+ /* Flag that clipboard client has been launched */
+ g_fClipboardLaunched = TRUE;
+
+ return iReturn;
+}
+
+
+/*
+ * Wrapper for internal EstablishConnection function.
+ * Initializes internal clients that must not be started until
+ * an external client has connected.
+ */
+
+int
+winProcEstablishConnection (ClientPtr client)
+{
+ int iReturn;
+ static int s_iCallCount = 0;
+ static unsigned long s_ulServerGeneration = 0;
+
+ #ifdef WINDBG
+ if (s_iCallCount == 0 || s_iCallCount == CLIP_NUM_CALLS) winDebug ("winProcEstablishConnection - Hello\n");
+ #endif
+
+ /* Do nothing if clipboard is not enabled */
+ if (!g_fClipboard)
+ {
+ winDebug ("winProcEstablishConnection - Clipboard is not enabled, "
+ "returning.\n");
+
+ /* Unwrap the original function, call it, and return */
+ InitialVector[2] = winProcEstablishConnectionOrig;
+ iReturn = (*winProcEstablishConnectionOrig) (client);
+ winProcEstablishConnectionOrig = NULL;
+ return iReturn;
+ }
+
+ /* Watch for server reset */
+ if (s_ulServerGeneration != serverGeneration)
+ {
+ /* Save new generation number */
+ s_ulServerGeneration = serverGeneration;
+
+ /* Reset call count */
+ s_iCallCount = 0;
+ }
+
+ /* Increment call count */
+ ++s_iCallCount;
+
+ /* Wait for CLIP_NUM_CALLS when Xdmcp is enabled */
+ if (g_fXdmcpEnabled
+ && !g_fClipboardLaunched
+ && s_iCallCount < CLIP_NUM_CALLS)
+ {
+ #ifdef WINDBG
+ if (s_iCallCount == 1) winDebug ("winProcEstablishConnection - Xdmcp, waiting to "
+ "start clipboard client until %dth call", CLIP_NUM_CALLS);
+ if (s_iCallCount == CLIP_NUM_CALLS - 1) winDebug (".\n");
+ else winDebug (".");
+ #endif
+ return (*winProcEstablishConnectionOrig) (client);
+ }
+
+ /*
+ * This procedure is only used for initialization.
+ * We can unwrap the original procedure at this point
+ * so that this function is no longer called until the
+ * server resets and the function is wrapped again.
+ */
+ InitialVector[2] = winProcEstablishConnectionOrig;
+
+ /*
+ * Call original function and bail if it fails.
+ * NOTE: We must do this first, since we need XdmcpOpenDisplay
+ * to be called before we initialize our clipboard client.
+ */
+ iReturn = (*winProcEstablishConnectionOrig) (client);
+ if (iReturn != 0)
+ {
+ ErrorF ("winProcEstablishConnection - ProcEstablishConnection "
+ "failed, bailing.\n");
+ return iReturn;
+ }
+
+ /* Clear original function pointer */
+ winProcEstablishConnectionOrig = NULL;
+
+ /* If the clipboard client has already been started, abort */
+ if (g_fClipboardLaunched)
+ {
+ winDebug ("winProcEstablishConnection - Clipboard client already "
+ "launched, returning.\n");
+ return iReturn;
+ }
+
+ /* Startup the clipboard client if clipboard mode is being used */
+ if (g_fClipboard)
+ {
+ /*
+ * NOTE: The clipboard client is started here for a reason:
+ * 1) Assume you are using XDMCP (e.g. XWin -query %hostname%)
+ * 2) If the clipboard client attaches during X Server startup,
+ * then it becomes the "magic client" that causes the X Server
+ * to reset if it exits.
+ * 3) XDMCP calls KillAllClients when it starts up.
+ * 4) The clipboard client is a client, so it is killed.
+ * 5) The clipboard client is the "magic client", so the X Server
+ * resets itself.
+ * 6) This repeats ad infinitum.
+ * 7) We avoid this by waiting until at least one client (could
+ * be XDM, could be another client) connects, which makes it
+ * almost certain that the clipboard client will not connect
+ * until after XDM when using XDMCP.
+ * 8) Unfortunately, there is another problem.
+ * 9) XDM walks the list of windows with XQueryTree,
+ * killing any client it finds with a window.
+ * 10)Thus, when using XDMCP we wait until CLIP_NUM_CALLS
+ * to ProcEstablishCeonnection before we startup the clipboard
+ * client. This should prevent XDM from finding the clipboard
+ * client, since it has not yet created a window.
+ */
+
+ /* Create the clipboard client thread */
+ if (!winInitClipboard ())
+ {
+ ErrorF ("winProcEstablishConnection - winClipboardInit "
+ "failed.\n");
+ return iReturn;
+ }
+
+ winDebug ("winProcEstablishConnection - winInitClipboard returned.\n");
+ }
+
+ /* Flag that clipboard client has been launched */
+ g_fClipboardLaunched = TRUE;
+
+ return iReturn;
+}
+
+
+/*
+ * Wrapper for internal SetSelectionOwner function.
+ * Grabs ownership of Windows clipboard when X11 clipboard owner changes.
+ */
+int
+winProcSetSelectionOwner (ClientPtr client)
+{
+ int i;
+ DrawablePtr pDrawable;
+ WindowPtr pWindow = None;
+ static Window s_iOwners[CLIP_NUM_SELECTIONS] = {None};
+ static unsigned long s_ulServerGeneration = 0;
+ REQUEST(xSetSelectionOwnerReq);
+
+ REQUEST_SIZE_MATCH(xSetSelectionOwnerReq);
+
+ winDebug ("winProcSetSelectionOwner - Hello.\n");
+
+ /* Watch for server reset */
+ if (s_ulServerGeneration != serverGeneration)
+ {
+ /* Save new generation number */
+ s_ulServerGeneration = serverGeneration;
+
+ /* Initialize static variables */
+ for (i = 0; i < CLIP_NUM_SELECTIONS; ++i)
+ s_iOwners[i] = None;
+ }
+
+ /* Abort if clipboard not completely initialized yet */
+ if (!g_fClipboardStarted)
+ {
+ winDebug ("winProcSetSelectionOwner - Clipboard not yet started, "
+ "aborting.\n");
+ goto winProcSetSelectionOwner_Done;
+ }
+
+ /* Grab window if we have one */
+ if (None != stuff->window)
+ {
+ /* Grab the Window from the request */
+ int rc = dixLookupWindow(&pWindow, stuff->window, client, DixReadAccess);
+ if (rc != Success) {
+ ErrorF ("winProcSetSelectionOwner - Found BadWindow, aborting.\n");
+ goto winProcSetSelectionOwner_Done;
+ }
+ }
+
+ /* Now we either have a valid window or None */
+
+ /* Save selection owners for monitored selections, ignore other selections */
+ if (XA_PRIMARY == stuff->selection)
+ {
+ /* Look for owned -> not owned transition */
+ if (None == stuff->window
+ && None != s_iOwners[CLIP_OWN_PRIMARY])
+ {
+ winDebug ("winProcSetSelectionOwner - PRIMARY - Going from "
+ "owned to not owned.\n");
+
+ /* Adjust last owned selection */
+ if (None != s_iOwners[CLIP_OWN_CLIPBOARD])
+ g_atomLastOwnedSelection = MakeAtom ("CLIPBOARD", 9, TRUE);
+ else
+ g_atomLastOwnedSelection = None;
+ }
+
+ /* Save new selection owner or None */
+ s_iOwners[CLIP_OWN_PRIMARY] = stuff->window;
+
+ winDebug ("winProcSetSelectionOwner - PRIMARY - Now owned by: 0x%x (clipboard is 0x%x)\n",
+ stuff->window,g_iClipboardWindow);
+ }
+ else if (MakeAtom ("CLIPBOARD", 9, TRUE) == stuff->selection)
+ {
+ /* Look for owned -> not owned transition */
+ if (None == stuff->window
+ && None != s_iOwners[CLIP_OWN_CLIPBOARD])
+ {
+ winDebug ("winProcSetSelectionOwner - CLIPBOARD - Going from "
+ "owned to not owned.\n");
+
+ /* Adjust last owned selection */
+ if (None != s_iOwners[CLIP_OWN_PRIMARY])
+ g_atomLastOwnedSelection = XA_PRIMARY;
+ else
+ g_atomLastOwnedSelection = None;
+ }
+
+ /* Save new selection owner or None */
+ s_iOwners[CLIP_OWN_CLIPBOARD] = stuff->window;
+
+ winDebug ("winProcSetSelectionOwner - CLIPBOARD - Now owned by: 0x%x, clipboard is 0x%x\n",
+ stuff->window,g_iClipboardWindow);
+ }
+ else
+ goto winProcSetSelectionOwner_Done;
+
+ /*
+ * At this point, if one of the selections is still owned by the
+ * clipboard manager then it should be marked as unowned since
+ * we will be taking ownership of the Win32 clipboard.
+ */
+ if (g_iClipboardWindow == s_iOwners[CLIP_OWN_PRIMARY])
+ s_iOwners[CLIP_OWN_PRIMARY] = None;
+ if (g_iClipboardWindow == s_iOwners[CLIP_OWN_CLIPBOARD])
+ s_iOwners[CLIP_OWN_CLIPBOARD] = None;
+
+ /* Abort if no window at this point */
+ if (None == stuff->window)
+ {
+ winDebug ("winProcSetSelectionOwner - No window, returning.\n");
+ goto winProcSetSelectionOwner_Done;
+ }
+
+ /* Abort if invalid selection */
+ if (!ValidAtom (stuff->selection))
+ {
+ winDebug ("winProcSetSelectionOwner - Found BadAtom, aborting.\n");
+ goto winProcSetSelectionOwner_Done;
+ }
+
+ /* Cast Window to Drawable */
+ pDrawable = (DrawablePtr) pWindow;
+
+ /* Abort if clipboard manager is owning the selection */
+ if (pDrawable->id == g_iClipboardWindow)
+ {
+ winDebug ("winProcSetSelectionOwner - We changed ownership, "
+ "aborting.\n");
+ goto winProcSetSelectionOwner_Done;
+ }
+
+ /* Abort if root window is taking ownership */
+ if (pDrawable->id == 0)
+ {
+ winDebug ("winProcSetSelectionOwner - Root window taking ownership, "
+ "aborting\n");
+ goto winProcSetSelectionOwner_Done;
+ }
+
+ /* Access the Windows clipboard */
+ if (!OpenClipboard (g_hwndClipboard))
+ {
+ ErrorF ("winProcSetSelectionOwner - OpenClipboard () failed: %08x, hwnd: %08x\n",
+ (int) GetLastError (),g_hwndClipboard);
+ goto winProcSetSelectionOwner_Done;
+ }
+
+ /* Take ownership of the Windows clipboard */
+ if (!EmptyClipboard ())
+ {
+ ErrorF ("winProcSetSelectionOwner - EmptyClipboard () failed: %08x\n",
+ (int) GetLastError ());
+ CloseClipboard ();
+ goto winProcSetSelectionOwner_Done;
+ }
+
+ winDebug("winProcSetSelectionOwner - SetClipboardData NULL\n");
+
+ /* Advertise Unicode if we support it */
+ if (g_fUnicodeSupport)
+ SetClipboardData (CF_UNICODETEXT, NULL);
+
+ /* Always advertise regular text */
+ SetClipboardData (CF_TEXT, NULL);
+
+ /* Save handle to last owned selection */
+ g_atomLastOwnedSelection = stuff->selection;
+
+ /* Release the clipboard */
+ if (!CloseClipboard ())
+ {
+ ErrorF ("winProcSetSelectionOwner - CloseClipboard () failed: "
+ "%08x\n",
+ (int) GetLastError ());
+ goto winProcSetSelectionOwner_Done;
+ }
+
+winProcSetSelectionOwner_Done:
+ return (*winProcSetSelectionOwnerOrig) (client);
+}