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mandos
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#     GNU General Public License for more details.
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# 
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# You should have received a copy of the GNU General Public License
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# along with this program.  If not, see
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# <http://www.gnu.org/licenses/>.
 
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# along with this program.  If not, see <http://www.gnu.org/licenses/>.
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# 
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# Contact the authors at <mandos@fukt.bsnet.se>.
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# 
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from dbus.mainloop.glib import DBusGMainLoop
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import ctypes
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version = "1.0"
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logger = logging.Logger('mandos')
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syslogger = logging.handlers.SysLogHandler\
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                        ('Mandos: %(levelname)s: %(message)s'))
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logger.addHandler(syslogger)
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75
 
console = logging.StreamHandler()
76
 
console.setFormatter(logging.Formatter('%(name)s: %(levelname)s:'
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                                       ' %(message)s'))
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logger.addHandler(console)
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class AvahiError(Exception):
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    def __init__(self, value):
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        self.domain = domain
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        self.host = host
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        self.rename_count = 0
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        self.max_renames = max_renames
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    def rename(self):
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        """Derived from the Avahi example code"""
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        if self.rename_count >= self.max_renames:
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            logger.critical(u"No suitable Zeroconf service name found"
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                            u" after %i retries, exiting.",
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                            rename_count)
 
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            logger.critical(u"No suitable service name found after %i"
 
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                            u" retries, exiting.", rename_count)
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            raise AvahiServiceError("Too many renames")
131
 
        self.name = server.GetAlternativeServiceName(self.name)
132
 
        logger.info(u"Changing Zeroconf service name to %r ...",
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                    str(self.name))
 
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        name = server.GetAlternativeServiceName(name)
 
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        logger.error(u"Changing name to %r ...", name)
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        syslogger.setFormatter(logging.Formatter\
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                               ('Mandos (%s): %%(levelname)s:'
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                               ' %%(message)s' % self.name))
 
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                               ' %%(message)s' % name))
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        self.remove()
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        self.add()
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        self.rename_count += 1
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                     avahi.DBUS_INTERFACE_ENTRY_GROUP)
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            group.connect_to_signal('StateChanged',
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                                    entry_group_state_changed)
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        logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
 
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        logger.debug(u"Adding service '%s' of type '%s' ...",
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                     service.name, service.type)
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        group.AddService(
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                self.interface,         # interface
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            try:
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                logger.info(u"Starting checker %r for %s",
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                            command, self.name)
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                # We don't need to redirect stdout and stderr, since
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                # in normal mode, that is already done by daemon(),
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                # and in debug mode we don't want to.  (Stdin is
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                # always replaced by /dev/null.)
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                self.checker = subprocess.Popen(command,
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                                                close_fds=True,
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                                                shell=True, cwd="/")
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                self.checker_callback_tag = gobject.child_watch_add\
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                                            (self.checker.pid,
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                                             self.checker_callback)
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            except OSError, error:
 
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            except subprocess.OSError, error:
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                logger.error(u"Failed to start subprocess: %s",
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                             error)
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        # Re-run this periodically if run by gobject.timeout_add
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    gnutls.library.functions.gnutls_openpgp_crt_import\
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                    (crt, ctypes.byref(datum),
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                     gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)
416
 
    # Verify the self signature in the key
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    crtverify = ctypes.c_uint();
418
 
    gnutls.library.functions.gnutls_openpgp_crt_verify_self\
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        (crt, 0, ctypes.byref(crtverify))
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    if crtverify.value != 0:
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        gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
422
 
        raise gnutls.errors.CertificateSecurityError("Verify failed")
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    # New buffer for the fingerprint
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    buffer = ctypes.create_string_buffer(20)
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    buffer_length = ctypes.c_size_t()
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    datetime.timedelta(1)
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    >>> string_to_delta(u'1w')
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    datetime.timedelta(7)
580
 
    >>> string_to_delta('5m 30s')
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    datetime.timedelta(0, 330)
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    """
583
 
    timevalue = datetime.timedelta(0)
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    for s in interval.split():
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        try:
586
 
            suffix=unicode(s[-1])
587
 
            value=int(s[:-1])
588
 
            if suffix == u"d":
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                delta = datetime.timedelta(value)
590
 
            elif suffix == u"s":
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                delta = datetime.timedelta(0, value)
592
 
            elif suffix == u"m":
593
 
                delta = datetime.timedelta(0, 0, 0, 0, value)
594
 
            elif suffix == u"h":
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                delta = datetime.timedelta(0, 0, 0, 0, 0, value)
596
 
            elif suffix == u"w":
597
 
                delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
598
 
            else:
599
 
                raise ValueError
600
 
        except (ValueError, IndexError):
 
561
    try:
 
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        suffix=unicode(interval[-1])
 
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        value=int(interval[:-1])
 
564
        if suffix == u"d":
 
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            delta = datetime.timedelta(value)
 
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        elif suffix == u"s":
 
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            delta = datetime.timedelta(0, value)
 
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        elif suffix == u"m":
 
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            delta = datetime.timedelta(0, 0, 0, 0, value)
 
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        elif suffix == u"h":
 
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            delta = datetime.timedelta(0, 0, 0, 0, 0, value)
 
572
        elif suffix == u"w":
 
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            delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
 
574
        else:
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            raise ValueError
602
 
        timevalue += delta
603
 
    return timevalue
 
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    except (ValueError, IndexError):
 
577
        raise ValueError
 
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    return delta
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def server_state_changed(state):
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    """Derived from the Avahi example code"""
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    if state == avahi.SERVER_COLLISION:
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        logger.error(u"Zeroconf server name collision")
 
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        logger.error(u"Server name collision")
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        service.remove()
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    elif state == avahi.SERVER_RUNNING:
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        service.add()
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def entry_group_state_changed(state, error):
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    """Derived from the Avahi example code"""
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    logger.debug(u"Avahi state change: %i", state)
 
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    logger.debug(u"state change: %i", state)
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    if state == avahi.ENTRY_GROUP_ESTABLISHED:
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        logger.debug(u"Zeroconf service established.")
 
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        logger.debug(u"Service established.")
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    elif state == avahi.ENTRY_GROUP_COLLISION:
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        logger.warning(u"Zeroconf service name collision.")
 
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        logger.warning(u"Service name collision.")
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        service.rename()
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    elif state == avahi.ENTRY_GROUP_FAILURE:
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        logger.critical(u"Avahi: Error in group state changed %s",
 
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        logger.critical(u"Error in group state changed %s",
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                        unicode(error))
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        raise AvahiGroupError("State changed: %s", str(error))
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    global main_loop_started
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    main_loop_started = False
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681
 
    parser = OptionParser(version = "%%prog %s" % version)
 
656
    parser = OptionParser()
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    parser.add_option("-i", "--interface", type="string",
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                      metavar="IF", help="Bind to interface IF")
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    parser.add_option("-a", "--address", type="string",
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    server_config = ConfigParser.SafeConfigParser(server_defaults)
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    del server_defaults
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    server_config.read(os.path.join(options.configdir, "mandos.conf"))
 
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    server_section = "server"
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    # Convert the SafeConfigParser object to a dict
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    server_settings = server_config.defaults()
 
699
    server_settings = dict(server_config.items(server_section))
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    # Use getboolean on the boolean config option
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    server_settings["debug"] = server_config.getboolean\
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                               ("DEFAULT", "debug")
 
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                               (server_section, "debug")
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    del server_config
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    # Override the settings from the config file with command line
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    if not debug:
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        syslogger.setLevel(logging.WARNING)
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        console.setLevel(logging.WARNING)
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    if server_settings["servicename"] != "Mandos":
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        syslogger.setFormatter(logging.Formatter\
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    # Parse config file with clients
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    client_defaults = { "timeout": "1h",
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                        "interval": "5m",
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                        "checker": "fping -q -- %(host)s",
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                        "host": "",
 
729
                        "checker": "fping -q -- %%(host)s",
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                        }
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    client_config = ConfigParser.SafeConfigParser(client_defaults)
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    client_config.read(os.path.join(server_settings["configdir"],
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    service = AvahiService(name = server_settings["servicename"],
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                           type = "_mandos._tcp", );
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    if server_settings["interface"]:
765
 
        service.interface = if_nametoindex\
766
 
                            (server_settings["interface"])
 
739
        service.interface = if_nametoindex(server_settings["interface"])
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768
741
    global main_loop
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    global bus
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    DBusGMainLoop(set_as_default=True )
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    main_loop = gobject.MainLoop()
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    bus = dbus.SystemBus()
775
 
    server = dbus.Interface(bus.get_object(avahi.DBUS_NAME,
776
 
                                           avahi.DBUS_PATH_SERVER),
777
 
                            avahi.DBUS_INTERFACE_SERVER)
 
748
    server = dbus.Interface(
 
749
            bus.get_object( avahi.DBUS_NAME, avahi.DBUS_PATH_SERVER ),
 
750
            avahi.DBUS_INTERFACE_SERVER )
778
751
    # End of Avahi example code
779
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753
    if debug:
 
754
        console = logging.StreamHandler()
 
755
        # console.setLevel(logging.DEBUG)
 
756
        console.setFormatter(logging.Formatter\
 
757
                             ('%(levelname)s: %(message)s'))
 
758
        logger.addHandler(console)
 
759
        del console
 
760
    
780
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    clients = Set()
781
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    def remove_from_clients(client):
782
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        clients.remove(client)
793
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        logger.critical(u"No clients defined")
794
775
        sys.exit(1)
795
776
    
796
 
    if debug:
797
 
        # Redirect stdin so all checkers get /dev/null
798
 
        null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
799
 
        os.dup2(null, sys.stdin.fileno())
800
 
        if null > 2:
801
 
            os.close(null)
802
 
    else:
803
 
        # No console logging
804
 
        logger.removeHandler(console)
805
 
        # Close all input and output, do double fork, etc.
 
777
    if not debug:
806
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        daemon()
807
779
    
808
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    pidfilename = "/var/run/mandos/mandos.pid"