diff options
Diffstat (limited to 'nx-X11/programs/Xserver/hw/xwin/winclipboardthread.c')
| -rw-r--r-- | nx-X11/programs/Xserver/hw/xwin/winclipboardthread.c | 477 |
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 new file mode 100644 index 000000000..081abd5e7 --- /dev/null +++ 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; +} |