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authorReinhard Tartler <siretart@tauware.de>2011-10-10 17:43:39 +0200
committerReinhard Tartler <siretart@tauware.de>2011-10-10 17:43:39 +0200
commitf4092abdf94af6a99aff944d6264bc1284e8bdd4 (patch)
tree2ac1c9cc16ceb93edb2c4382c088dac5aeafdf0f /nx-X11/programs/Xserver/hw/xwin/winclipboardthread.c
parenta840692edc9c6d19cd7c057f68e39c7d95eb767d (diff)
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Imported nx-X11-3.1.0-1.tar.gznx-X11/3.1.0-1
Summary: Imported nx-X11-3.1.0-1.tar.gz Keywords: Imported nx-X11-3.1.0-1.tar.gz into Git repository
Diffstat (limited to 'nx-X11/programs/Xserver/hw/xwin/winclipboardthread.c')
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1 files changed, 477 insertions, 0 deletions
diff --git a/nx-X11/programs/Xserver/hw/xwin/winclipboardthread.c b/nx-X11/programs/Xserver/hw/xwin/winclipboardthread.c
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+++ b/nx-X11/programs/Xserver/hw/xwin/winclipboardthread.c
@@ -0,0 +1,477 @@
+/*
+ *Copyright (C) 2003-2004 Harold L Hunt II All Rights Reserved.
+ *
+ *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 Harold L Hunt II
+ *shall not be used in advertising or otherwise to promote the sale, use
+ *or other dealings in this Software without prior written authorization
+ *from Harold L Hunt II.
+ *
+ * Authors: Harold L Hunt II
+ */
+
+#ifdef HAVE_XWIN_CONFIG_H
+#include <xwin-config.h>
+#endif
+#include <sys/types.h>
+#include "winclipboard.h"
+#ifdef __CYGWIN__
+#include <errno.h>
+#endif
+#include "X11/Xauth.h"
+
+
+/*
+ * Constants
+ */
+
+#define AUTH_NAME "MIT-MAGIC-COOKIE-1"
+
+
+/*
+ * References to external symbols
+ */
+
+extern Bool g_fUnicodeClipboard;
+extern unsigned long serverGeneration;
+#if defined(XCSECURITY)
+extern unsigned int g_uiAuthDataLen;
+extern char *g_pAuthData;
+#endif
+extern Bool g_fClipboardStarted;
+extern HWND g_hwndClipboard;
+extern void *g_pClipboardDisplay;
+extern Window g_iClipboardWindow;
+
+
+/*
+ * Global variables
+ */
+
+static jmp_buf g_jmpEntry;
+Bool g_fUnicodeSupport = FALSE;
+Bool g_fUseUnicode = FALSE;
+
+
+/*
+ * Local function prototypes
+ */
+
+static int
+winClipboardErrorHandler (Display *pDisplay, XErrorEvent *pErr);
+
+static int
+winClipboardIOErrorHandler (Display *pDisplay);
+
+
+/*
+ * Main thread function
+ */
+
+void *
+winClipboardProc (void *pvNotUsed)
+{
+ Atom atomClipboard, atomClipboardManager;
+ int iReturn;
+ HWND hwnd = NULL;
+ int iConnectionNumber = 0;
+#ifdef HAS_DEVWINDOWS
+ int fdMessageQueue = 0;
+#else
+ struct timeval tvTimeout;
+#endif
+ fd_set fdsRead;
+ int iMaxDescriptor;
+ Display *pDisplay = NULL;
+ Window iWindow = None;
+ int iRetries;
+ Bool fUseUnicode;
+ char szDisplay[512];
+ int iSelectError;
+
+ ErrorF ("winClipboardProc - Hello\n");
+
+ /* Do we have Unicode support? */
+ g_fUnicodeSupport = winClipboardDetectUnicodeSupport ();
+
+ /* Do we use Unicode clipboard? */
+ fUseUnicode = g_fUnicodeClipboard && g_fUnicodeSupport;
+
+ /* Save the Unicode support flag in a global */
+ g_fUseUnicode = fUseUnicode;
+
+ /* Allow multiple threads to access Xlib */
+ if (XInitThreads () == 0)
+ {
+ ErrorF ("winClipboardProc - XInitThreads failed.\n");
+ pthread_exit (NULL);
+ }
+
+ /* See if X supports the current locale */
+ if (XSupportsLocale () == False)
+ {
+ ErrorF ("winClipboardProc - Locale not supported by X. Exiting.\n");
+ pthread_exit (NULL);
+ }
+
+ /* Set jump point for Error exits */
+ iReturn = setjmp (g_jmpEntry);
+
+ /* Check if we should continue operations */
+ if (iReturn != WIN_JMP_ERROR_IO
+ && iReturn != WIN_JMP_OKAY)
+ {
+ /* setjmp returned an unknown value, exit */
+ ErrorF ("winClipboardProc - setjmp returned: %d exiting\n",
+ iReturn);
+ pthread_exit (NULL);
+ }
+ else if (iReturn == WIN_JMP_ERROR_IO)
+ {
+ /* TODO: Cleanup the Win32 window and free any allocated memory */
+ ErrorF ("winClipboardProc - setjmp returned for IO Error Handler.\n");
+ pthread_exit (NULL);
+ }
+
+#if defined(XCSECURITY)
+ /* Use our generated cookie for authentication */
+ XSetAuthorization (AUTH_NAME,
+ strlen (AUTH_NAME),
+ g_pAuthData,
+ g_uiAuthDataLen);
+#endif
+
+ /* Set error handler */
+ XSetErrorHandler (winClipboardErrorHandler);
+ XSetIOErrorHandler (winClipboardIOErrorHandler);
+
+ /* Initialize retry count */
+ iRetries = 0;
+
+ /* Setup the display connection string x */
+ /*
+ * NOTE: Always connect to screen 0 since we require that screen
+ * numbers start at 0 and increase without gaps. We only need
+ * to connect to one screen on the display to get events
+ * for all screens on the display. That is why there is only
+ * one clipboard client thread.
+ */
+ snprintf (szDisplay,
+ 512,
+ "127.0.0.1:%s.0",
+ display);
+
+ /* Print the display connection string */
+ ErrorF ("winClipboardProc - DISPLAY=%s\n", szDisplay);
+
+ /* Open the X display */
+ do
+ {
+ pDisplay = XOpenDisplay (szDisplay);
+ if (pDisplay == NULL)
+ {
+ ErrorF ("winClipboardProc - Could not open display, "
+ "try: %d, sleeping: %d\n",
+ iRetries + 1, WIN_CONNECT_DELAY);
+ ++iRetries;
+ sleep (WIN_CONNECT_DELAY);
+ continue;
+ }
+ else
+ break;
+ }
+ while (pDisplay == NULL && iRetries < WIN_CONNECT_RETRIES);
+
+ /* Make sure that the display opened */
+ if (pDisplay == NULL)
+ {
+ ErrorF ("winClipboardProc - Failed opening the display, giving up\n");
+ pthread_exit (NULL);
+ }
+
+ /* Save the display in the screen privates */
+ g_pClipboardDisplay = pDisplay;
+
+ ErrorF ("winClipboardProc - XOpenDisplay () returned and "
+ "successfully opened the display.\n");
+
+ /* Get our connection number */
+ iConnectionNumber = ConnectionNumber (pDisplay);
+
+#ifdef HAS_DEVWINDOWS
+ /* Open a file descriptor for the windows message queue */
+ fdMessageQueue = open (WIN_MSG_QUEUE_FNAME, O_RDONLY);
+ if (fdMessageQueue == -1)
+ {
+ ErrorF ("winClipboardProc - Failed opening %s\n", WIN_MSG_QUEUE_FNAME);
+ pthread_exit (NULL);
+ }
+
+ /* Find max of our file descriptors */
+ iMaxDescriptor = max (fdMessageQueue, iConnectionNumber) + 1;
+#else
+ iMaxDescriptor = iConnectionNumber + 1;
+#endif
+
+ /* Select event types to watch */
+ if (XSelectInput (pDisplay,
+ DefaultRootWindow (pDisplay),
+ SubstructureNotifyMask |
+ StructureNotifyMask |
+ PropertyChangeMask) == BadWindow)
+ ErrorF ("winClipboardProc - XSelectInput generated BadWindow "
+ "on RootWindow\n\n");
+
+ /* Create atoms */
+ atomClipboard = XInternAtom (pDisplay, "CLIPBOARD", False);
+ atomClipboardManager = XInternAtom (pDisplay, "CLIPBOARD_MANAGER", False);
+
+ /* Create a messaging window */
+ iWindow = XCreateSimpleWindow (pDisplay,
+ DefaultRootWindow (pDisplay),
+ 1, 1,
+ 500, 500,
+ 0,
+ BlackPixel (pDisplay, 0),
+ BlackPixel (pDisplay, 0));
+ if (iWindow == 0)
+ {
+ ErrorF ("winClipboardProc - Could not create an X window.\n");
+ pthread_exit (NULL);
+ }
+
+ /* Save the window in the screen privates */
+ g_iClipboardWindow = iWindow;
+
+ /* Create Windows messaging window */
+ hwnd = winClipboardCreateMessagingWindow ();
+
+ /* Save copy of HWND in screen privates */
+ g_hwndClipboard = hwnd;
+
+ /* Assert ownership of selections if Win32 clipboard is owned */
+ if (NULL != GetClipboardOwner ())
+ {
+ /* PRIMARY */
+ iReturn = XSetSelectionOwner (pDisplay, XA_PRIMARY,
+ iWindow, CurrentTime);
+ if (iReturn == BadAtom || iReturn == BadWindow)
+ {
+ ErrorF ("winClipboardProc - Could not set PRIMARY owner\n");
+ pthread_exit (NULL);
+ }
+
+ /* CLIPBOARD */
+ iReturn = XSetSelectionOwner (pDisplay, atomClipboard,
+ iWindow, CurrentTime);
+ if (iReturn == BadAtom || iReturn == BadWindow)
+ {
+ ErrorF ("winClipboardProc - Could not set CLIPBOARD owner\n");
+ pthread_exit (NULL);
+ }
+ }
+
+ /* Pre-flush X events */
+ /*
+ * NOTE: Apparently you'll freeze if you don't do this,
+ * because there may be events in local data structures
+ * already.
+ */
+ winClipboardFlushXEvents (hwnd,
+ iWindow,
+ pDisplay,
+ fUseUnicode);
+
+ /* Pre-flush Windows messages */
+ if (!winClipboardFlushWindowsMessageQueue (hwnd))
+ return 0;
+
+ /* Signal that the clipboard client has started */
+ g_fClipboardStarted = TRUE;
+
+ /* Loop for X events */
+ while (1)
+ {
+ /* Setup the file descriptor set */
+ /*
+ * NOTE: You have to do this before every call to select
+ * because select modifies the mask to indicate
+ * which descriptors are ready.
+ */
+ FD_ZERO (&fdsRead);
+ FD_SET (iConnectionNumber, &fdsRead);
+#ifdef HAS_DEVWINDOWS
+ FD_SET (fdMessageQueue, &fdsRead);
+#else
+ tvTimeout.tv_sec = 0;
+ tvTimeout.tv_usec = 100;
+#endif
+
+ /* Wait for a Windows event or an X event */
+ iReturn = select (iMaxDescriptor, /* Highest fds number */
+ &fdsRead, /* Read mask */
+ NULL, /* No write mask */
+ NULL, /* No exception mask */
+#ifdef HAS_DEVWINDOWS
+ NULL /* No timeout */
+#else
+ &tvTimeout /* Set timeout */
+#endif
+ );
+
+#ifndef HAS_WINSOCK
+ iSelectError = errno;
+#else
+ iSelectError = WSAGetLastError();
+#endif
+
+ if (iReturn < 0)
+ {
+#ifndef HAS_WINSOCK
+ if (iSelectError == EINTR)
+#else
+ if (iSelectError == WSAEINTR)
+#endif
+ continue;
+
+ ErrorF ("winClipboardProc - Call to select () failed: %d. "
+ "Bailing.\n", iReturn);
+ break;
+ }
+
+ /* Branch on which descriptor became active */
+ if (FD_ISSET (iConnectionNumber, &fdsRead))
+ {
+ /* Process X events */
+ /* Exit when we see that server is shutting down */
+ iReturn = winClipboardFlushXEvents (hwnd,
+ iWindow,
+ pDisplay,
+ fUseUnicode);
+ if (WIN_XEVENTS_SHUTDOWN == iReturn)
+ {
+ ErrorF ("winClipboardProc - winClipboardFlushXEvents "
+ "trapped shutdown event, exiting main loop.\n");
+ break;
+ }
+ }
+
+#ifdef HAS_DEVWINDOWS
+ /* Check for Windows event ready */
+ if (FD_ISSET (fdMessageQueue, &fdsRead))
+#else
+ if (1)
+#endif
+ {
+ /* Process Windows messages */
+ if (!winClipboardFlushWindowsMessageQueue (hwnd))
+ {
+ ErrorF ("winClipboardProc - "
+ "winClipboardFlushWindowsMessageQueue trapped "
+ "WM_QUIT message, exiting main loop.\n");
+ break;
+ }
+ }
+ }
+
+ /* Close our X window */
+ if (pDisplay && iWindow)
+ {
+ iReturn = XDestroyWindow (pDisplay, iWindow);
+ if (iReturn == BadWindow)
+ ErrorF ("winClipboardProc - XDestroyWindow returned BadWindow.\n");
+ else
+ ErrorF ("winClipboardProc - XDestroyWindow succeeded.\n");
+ }
+
+
+#ifdef HAS_DEVWINDOWS
+ /* Close our Win32 message handle */
+ if (fdMessageQueue)
+ close (fdMessageQueue);
+#endif
+
+#if 0
+ /*
+ * FIXME: XCloseDisplay hangs if we call it, as of 2004/03/26. The
+ * XSync and XSelectInput calls did not help.
+ */
+
+ /* Discard any remaining events */
+ XSync (pDisplay, TRUE);
+
+ /* Select event types to watch */
+ XSelectInput (pDisplay,
+ DefaultRootWindow (pDisplay),
+ None);
+
+ /* Close our X display */
+ if (pDisplay)
+ {
+ XCloseDisplay (pDisplay);
+ }
+#endif
+
+ g_iClipboardWindow = None;
+ g_pClipboardDisplay = NULL;
+ g_hwndClipboard = NULL;
+
+ return NULL;
+}
+
+
+/*
+ * winClipboardErrorHandler - Our application specific error handler
+ */
+
+static int
+winClipboardErrorHandler (Display *pDisplay, XErrorEvent *pErr)
+{
+ char pszErrorMsg[100];
+
+ XGetErrorText (pDisplay,
+ pErr->error_code,
+ pszErrorMsg,
+ sizeof (pszErrorMsg));
+ ErrorF ("winClipboardErrorHandler - ERROR: \n\t%s\n"
+ "\tSerial: %d, Request Code: %d, Minor Code: %d\n",
+ pszErrorMsg,
+ pErr->serial,
+ pErr->request_code,
+ pErr->minor_code);
+ return 0;
+}
+
+
+/*
+ * winClipboardIOErrorHandler - Our application specific IO error handler
+ */
+
+static int
+winClipboardIOErrorHandler (Display *pDisplay)
+{
+ ErrorF ("\nwinClipboardIOErrorHandler!\n\n");
+
+ /* Restart at the main entry point */
+ longjmp (g_jmpEntry, WIN_JMP_ERROR_IO);
+
+ return 0;
+}