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  • Committer: Teddy Hogeborn
  • Date: 2008-08-27 01:18:25 UTC
  • Revision ID: teddy@fukt.bsnet.se-20080827011825-ka3ni6xvy2ehi1y8
* .bzrignore: New.

* clients.conf ([foo]): Remove Radix-64 checksum.

* mandos (AvahiService.rename, server_state_changed,
          entry_group_state_changed): Make Avahi log messages more
                                      clear that they are about
                                      Zeroconf.
  (fingerprint): Use plain "0" instead of "ctypes.c_uint(0)".

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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 <http://www.gnu.org/licenses/>.
 
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# along with this program.  If not, see
 
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# <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
62
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import ctypes
63
64
 
 
65
version = "1.0"
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65
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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:'
 
77
                                       ' %(message)s'))
 
78
logger.addHandler(console)
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74
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class AvahiError(Exception):
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    def __init__(self, value):
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        self.domain = domain
115
121
        self.host = host
116
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        self.rename_count = 0
 
123
        self.max_renames = max_renames
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    def rename(self):
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        """Derived from the Avahi example code"""
119
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        if self.rename_count >= self.max_renames:
120
 
            logger.critical(u"No suitable service name found after %i"
121
 
                            u" retries, exiting.", rename_count)
 
127
            logger.critical(u"No suitable Zeroconf service name found"
 
128
                            u" after %i retries, exiting.",
 
129
                            rename_count)
122
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            raise AvahiServiceError("Too many renames")
123
 
        name = server.GetAlternativeServiceName(name)
124
 
        logger.error(u"Changing name to %r ...", name)
 
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        self.name = server.GetAlternativeServiceName(self.name)
 
132
        logger.info(u"Changing Zeroconf service name to %r ...",
 
133
                    str(self.name))
125
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        syslogger.setFormatter(logging.Formatter\
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                               ('Mandos (%s): %%(levelname)s:'
127
 
                               ' %%(message)s' % name))
 
136
                               ' %%(message)s' % self.name))
128
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        self.remove()
129
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        self.add()
130
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        self.rename_count += 1
142
151
                     avahi.DBUS_INTERFACE_ENTRY_GROUP)
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            group.connect_to_signal('StateChanged',
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                                    entry_group_state_changed)
145
 
        logger.debug(u"Adding service '%s' of type '%s' ...",
 
154
        logger.debug(u"Adding Zeroconf 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)
 
343
                # 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
 
346
                # 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)
340
 
            except subprocess.OSError, error:
 
353
            except OSError, error:
341
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                logger.error(u"Failed to start subprocess: %s",
342
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                             error)
343
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        # Re-run this periodically if run by gobject.timeout_add
400
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    gnutls.library.functions.gnutls_openpgp_crt_import\
401
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                    (crt, ctypes.byref(datum),
402
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                     gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)
 
416
    # Verify the self signature in the key
 
417
    crtverify = ctypes.c_uint();
 
418
    gnutls.library.functions.gnutls_openpgp_crt_verify_self\
 
419
        (crt, 0, ctypes.byref(crtverify))
 
420
    if crtverify.value != 0:
 
421
        gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
 
422
        raise gnutls.errors.CertificateSecurityError("Verify failed")
403
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    # New buffer for the fingerprint
404
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    buffer = ctypes.create_string_buffer(20)
405
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    buffer_length = ctypes.c_size_t()
557
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    datetime.timedelta(1)
558
578
    >>> string_to_delta(u'1w')
559
579
    datetime.timedelta(7)
 
580
    >>> string_to_delta('5m 30s')
 
581
    datetime.timedelta(0, 330)
560
582
    """
561
 
    try:
562
 
        suffix=unicode(interval[-1])
563
 
        value=int(interval[:-1])
564
 
        if suffix == u"d":
565
 
            delta = datetime.timedelta(value)
566
 
        elif suffix == u"s":
567
 
            delta = datetime.timedelta(0, value)
568
 
        elif suffix == u"m":
569
 
            delta = datetime.timedelta(0, 0, 0, 0, value)
570
 
        elif suffix == u"h":
571
 
            delta = datetime.timedelta(0, 0, 0, 0, 0, value)
572
 
        elif suffix == u"w":
573
 
            delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
574
 
        else:
 
583
    timevalue = datetime.timedelta(0)
 
584
    for s in interval.split():
 
585
        try:
 
586
            suffix=unicode(s[-1])
 
587
            value=int(s[:-1])
 
588
            if suffix == u"d":
 
589
                delta = datetime.timedelta(value)
 
590
            elif suffix == u"s":
 
591
                delta = datetime.timedelta(0, value)
 
592
            elif suffix == u"m":
 
593
                delta = datetime.timedelta(0, 0, 0, 0, value)
 
594
            elif suffix == u"h":
 
595
                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):
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            raise ValueError
576
 
    except (ValueError, IndexError):
577
 
        raise ValueError
578
 
    return delta
 
602
        timevalue += delta
 
603
    return timevalue
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580
605
 
581
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def server_state_changed(state):
582
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    """Derived from the Avahi example code"""
583
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    if state == avahi.SERVER_COLLISION:
584
 
        logger.error(u"Server name collision")
 
609
        logger.error(u"Zeroconf server name collision")
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        service.remove()
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    elif state == avahi.SERVER_RUNNING:
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        service.add()
589
614
 
590
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def entry_group_state_changed(state, error):
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    """Derived from the Avahi example code"""
592
 
    logger.debug(u"state change: %i", state)
 
617
    logger.debug(u"Avahi state change: %i", state)
593
618
    
594
619
    if state == avahi.ENTRY_GROUP_ESTABLISHED:
595
 
        logger.debug(u"Service established.")
 
620
        logger.debug(u"Zeroconf service established.")
596
621
    elif state == avahi.ENTRY_GROUP_COLLISION:
597
 
        logger.warning(u"Service name collision.")
 
622
        logger.warning(u"Zeroconf service name collision.")
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        service.rename()
599
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    elif state == avahi.ENTRY_GROUP_FAILURE:
600
 
        logger.critical(u"Error in group state changed %s",
 
625
        logger.critical(u"Avahi: Error in group state changed %s",
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                        unicode(error))
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        raise AvahiGroupError("State changed: %s", str(error))
603
628
 
653
678
    global main_loop_started
654
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    main_loop_started = False
655
680
    
656
 
    parser = OptionParser()
 
681
    parser = OptionParser(version = "%%prog %s" % version)
657
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    parser.add_option("-i", "--interface", type="string",
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                      metavar="IF", help="Bind to interface IF")
659
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    parser.add_option("-a", "--address", type="string",
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719
    server_config = ConfigParser.SafeConfigParser(server_defaults)
695
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    del server_defaults
696
721
    server_config.read(os.path.join(options.configdir, "mandos.conf"))
697
 
    server_section = "server"
698
722
    # Convert the SafeConfigParser object to a dict
699
 
    server_settings = dict(server_config.items(server_section))
 
723
    server_settings = server_config.defaults()
700
724
    # Use getboolean on the boolean config option
701
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    server_settings["debug"] = server_config.getboolean\
702
 
                               (server_section, "debug")
 
726
                               ("DEFAULT", "debug")
703
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    del server_config
704
728
    
705
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    # Override the settings from the config file with command line
716
740
    
717
741
    if not debug:
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742
        syslogger.setLevel(logging.WARNING)
 
743
        console.setLevel(logging.WARNING)
719
744
    
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    if server_settings["servicename"] != "Mandos":
721
746
        syslogger.setFormatter(logging.Formatter\
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    # Parse config file with clients
727
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    client_defaults = { "timeout": "1h",
728
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                        "interval": "5m",
729
 
                        "checker": "fping -q -- %%(host)s",
 
754
                        "checker": "fping -q -- %(host)s",
 
755
                        "host": "",
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                        }
731
757
    client_config = ConfigParser.SafeConfigParser(client_defaults)
732
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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", );
738
764
    if server_settings["interface"]:
739
 
        service.interface = if_nametoindex(server_settings["interface"])
 
765
        service.interface = if_nametoindex\
 
766
                            (server_settings["interface"])
740
767
    
741
768
    global main_loop
742
769
    global bus
745
772
    DBusGMainLoop(set_as_default=True )
746
773
    main_loop = gobject.MainLoop()
747
774
    bus = dbus.SystemBus()
748
 
    server = dbus.Interface(
749
 
            bus.get_object( avahi.DBUS_NAME, avahi.DBUS_PATH_SERVER ),
750
 
            avahi.DBUS_INTERFACE_SERVER )
 
775
    server = dbus.Interface(bus.get_object(avahi.DBUS_NAME,
 
776
                                           avahi.DBUS_PATH_SERVER),
 
777
                            avahi.DBUS_INTERFACE_SERVER)
751
778
    # End of Avahi example code
752
779
    
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
 
    
761
780
    clients = Set()
762
781
    def remove_from_clients(client):
763
782
        clients.remove(client)
774
793
        logger.critical(u"No clients defined")
775
794
        sys.exit(1)
776
795
    
777
 
    if not debug:
 
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.
778
806
        daemon()
779
807
    
780
808
    pidfilename = "/var/run/mandos/mandos.pid"