Пример #1
0
void
CreateWellKnownSockets(void)
{
    int i;
    int partial;

    FD_ZERO(&AllSockets);
    FD_ZERO(&AllClients);
    FD_ZERO(&LastSelectMask);
    FD_ZERO(&ClientsWithInput);

#if !defined(WIN32)
    for (i = 0; i < MaxClients; i++)
        ConnectionTranslation[i] = 0;
#else
    ClearConnectionTranslation();
#endif

    FD_ZERO(&WellKnownConnections);

    /* display is initialized to "0" by main(). It is then set to the display
     * number if specified on the command line. */

    if (NoListenAll) {
        ListenTransCount = 0;
    }
    else if ((displayfd < 0) || explicit_display) {
        if (TryCreateSocket(atoi(display), &partial) &&
            ListenTransCount >= 1)
            if (!PartialNetwork && partial)
                FatalError ("Failed to establish all listening sockets");
    }
    else { /* -displayfd and no explicit display number */
        Bool found = 0;
        for (i = 0; i < 65536 - X_TCP_PORT; i++) {
            if (TryCreateSocket(i, &partial) && ListenTransCount >= 1 && (PartialNetwork || !partial)) {
                found = 1;
                break;
            }
            else
                CloseWellKnownConnections();
        }
        if (!found)
            FatalError("Failed to find a socket to listen on");
        dynamic_display_id=i;
        snprintf(dynamic_display, sizeof(dynamic_display), "%d", i);
        display = dynamic_display;
    }

    ListenTransFds = xallocarray(ListenTransCount, sizeof (int));
    if (ListenTransFds == NULL)
        FatalError ("Failed to create listening socket array");

    for (i = ListenTransCount; i > 0; i--) {
        int fd = _XSERVTransGetConnectionNumber (ListenTransConns[i-1]);

        ListenTransFds[i-1] = fd;
        FD_SET(fd, &WellKnownConnections);

        if (!_XSERVTransIsLocal (ListenTransConns[i-1])) {
            int protocol = 0;
            if (!strcmp("inet", ListenTransConns[i-1]->transptr->TransName)) protocol = 4;
            else if (!strcmp("inet6", ListenTransConns[i-1]->transptr->TransName)) protocol = 6;
            DefineSelf (fd, protocol);
        }
    }

    if (!XFD_ANYSET(&WellKnownConnections) && !NoListenAll)
        FatalError
            ("Cannot establish any listening sockets - Make sure an X server isn't already running");

#if !defined(WIN32)
    OsSignal(SIGPIPE, SIG_IGN);
    OsSignal(SIGHUP, AutoResetServer);
#endif
    OsSignal(SIGINT, GiveUp);
    OsSignal(SIGTERM, GiveUp);
    XFD_COPYSET(&WellKnownConnections, &AllSockets);
    ResetHosts(display);

    InitParentProcess();

#ifdef XDMCP
    XdmcpInit();
#endif
}
Пример #2
0
void
CreateWellKnownSockets(void)
{
    int i;
    int partial;

    FD_ZERO(&AllSockets);
    FD_ZERO(&AllClients);
    FD_ZERO(&LastSelectMask);
    FD_ZERO(&ClientsWithInput);

#if !defined(WIN32)
    for (i = 0; i < MaxClients; i++)
        ConnectionTranslation[i] = 0;
#else
    ClearConnectionTranslation();
#endif

    FD_ZERO(&WellKnownConnections);

    /* display is initialized to "0" by main(). It is then set to the display
     * number if specified on the command line, or to NULL when the -displayfd
     * option is used. */
    if (display) {
        if (TryCreateSocket(atoi(display), &partial) &&
            ListenTransCount >= 1)
            if (!PartialNetwork && partial)
                FatalError ("Failed to establish all listening sockets");
    }
    else { /* -displayfd */
        Bool found = 0;
        for (i = 0; i < 65535 - X_TCP_PORT; i++) {
            if (TryCreateSocket(i, &partial) && !partial) {
                found = 1;
                break;
            }
            else
                CloseWellKnownConnections();
        }
        if (!found)
            FatalError("Failed to find a socket to listen on");
        snprintf(dynamic_display, sizeof(dynamic_display), "%d", i);
        display = dynamic_display;
    }

    ListenTransFds = malloc(ListenTransCount * sizeof (int));

    for (i = 0; i < ListenTransCount; i++) {
        int fd = _XSERVTransGetConnectionNumber(ListenTransConns[i]);

        ListenTransFds[i] = fd;
        FD_SET(fd, &WellKnownConnections);

        if (!_XSERVTransIsLocal(ListenTransConns[i]))
            DefineSelf (fd);
    }

    if (!XFD_ANYSET(&WellKnownConnections))
        FatalError
            ("Cannot establish any listening sockets - Make sure an X server isn't already running");
#if !defined(WIN32)
    OsSignal(SIGPIPE, SIG_IGN);
    OsSignal(SIGHUP, AutoResetServer);
#endif
    OsSignal(SIGINT, GiveUp);
    OsSignal(SIGTERM, GiveUp);
    XFD_COPYSET(&WellKnownConnections, &AllSockets);
    ResetHosts(display);

    InitParentProcess();

#ifdef XDMCP
    XdmcpInit();
#endif
}