/mandos/release

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  • Committer: Teddy Hogeborn
  • Date: 2008-09-13 19:20:50 UTC
  • Revision ID: teddy@fukt.bsnet.se-20080913192050-gxuo0jv4o25jn848
* TODO: Minor changes.

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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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import stat
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import logging
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import logging.handlers
 
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import pwd
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import dbus
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import gobject
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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 service name found after %i"
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                            u" retries, exiting.", rename_count)
 
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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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            raise AvahiServiceError("Too many renames")
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        self.name = server.GetAlternativeServiceName(self.name)
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        logger.info(u"Changing name to %r ...", str(self.name))
 
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        logger.info(u"Changing Zeroconf service name to %r ...",
 
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                    str(self.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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                     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 service '%s' of type '%s' ...",
 
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        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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    # Verify the self signature in the key
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    crtverify = ctypes.c_uint();
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    gnutls.library.functions.gnutls_openpgp_crt_verify_self\
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        (crt, ctypes.c_uint(0), ctypes.byref(crtverify))
 
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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)
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        raise gnutls.errors.CertificateSecurityError("Verify failed")
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    Attributes:
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        settings:       Server settings
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        clients:        Set() of Client objects
 
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        enabled:        Boolean; whether this server is activated yet
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    """
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    address_family = socket.AF_INET6
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    def __init__(self, *args, **kwargs):
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        if "clients" in kwargs:
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            self.clients = kwargs["clients"]
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            del kwargs["clients"]
 
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        self.enabled = False
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        return super(type(self), self).__init__(*args, **kwargs)
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    def server_bind(self):
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        """This overrides the normal server_bind() function
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#                                            (self.settings
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#                                             ["interface"]))
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            return super(type(self), self).server_bind()
 
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    def server_activate(self):
 
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        if self.enabled:
 
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            return super(type(self), self).server_activate()
 
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    def enable(self):
 
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        self.enabled = True
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def string_to_delta(interval):
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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"Server name collision")
 
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        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()
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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"state change: %i", state)
 
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    logger.debug(u"Avahi state change: %i", state)
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    if state == avahi.ENTRY_GROUP_ESTABLISHED:
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        logger.debug(u"Service established.")
 
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        logger.debug(u"Zeroconf service established.")
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    elif state == avahi.ENTRY_GROUP_COLLISION:
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        logger.warning(u"Service name collision.")
 
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        logger.warning(u"Zeroconf 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"Error in group state changed %s",
 
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        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))
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    client_config.read(os.path.join(server_settings["configdir"],
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                                    "clients.conf"))
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    clients = Set()
 
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    tcp_server = IPv6_TCPServer((server_settings["address"],
 
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                                 server_settings["port"]),
 
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                                tcp_handler,
 
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                                settings=server_settings,
 
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                                clients=clients)
 
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    pidfilename = "/var/run/mandos.pid"
 
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    try:
 
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        pidfile = open(pidfilename, "w")
 
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    except IOError, error:
 
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        logger.error("Could not open file %r", pidfilename)
 
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    uid = 65534
 
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    gid = 65534
 
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    try:
 
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        uid = pwd.getpwnam("mandos").pw_uid
 
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    except KeyError:
 
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        try:
 
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            uid = pwd.getpwnam("nobody").pw_uid
 
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        except KeyError:
 
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            pass
 
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    try:
 
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        gid = pwd.getpwnam("mandos").pw_gid
 
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    except KeyError:
 
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        try:
 
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            gid = pwd.getpwnam("nogroup").pw_gid
 
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        except KeyError:
 
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            pass
 
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    try:
 
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        os.setuid(uid)
 
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        os.setgid(gid)
 
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    except OSError, error:
 
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        if error[0] != errno.EPERM:
 
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            raise error
 
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    global service
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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"]:
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        service.interface = if_nametoindex(server_settings["interface"])
 
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        service.interface = if_nametoindex\
 
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                            (server_settings["interface"])
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    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()
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    server = dbus.Interface(
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            bus.get_object( avahi.DBUS_NAME, avahi.DBUS_PATH_SERVER ),
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            avahi.DBUS_INTERFACE_SERVER )
 
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    server = dbus.Interface(bus.get_object(avahi.DBUS_NAME,
 
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                                           avahi.DBUS_PATH_SERVER),
 
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                            avahi.DBUS_INTERFACE_SERVER)
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    # End of Avahi example code
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    clients = Set()
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    def remove_from_clients(client):
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        clients.remove(client)
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        if not clients:
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        # Close all input and output, do double fork, etc.
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        daemon()
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    pidfilename = "/var/run/mandos/mandos.pid"
805
 
    pid = os.getpid()
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    try:
807
 
        pidfile = open(pidfilename, "w")
 
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        pid = os.getpid()
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        pidfile.write(str(pid) + "\n")
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        pidfile.close()
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        del pidfile
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    except IOError, err:
812
 
        logger.error(u"Could not write %s file with PID %d",
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                     pidfilename, os.getpid())
 
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        logger.error(u"Could not write to file %r with PID %d",
 
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                     pidfilename, pid)
 
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    except NameError:
 
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        # "pidfile" was never created
 
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        pass
 
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    del pidfilename
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    def cleanup():
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        "Cleanup function; run on exit"
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    for client in clients:
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        client.start()
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839
 
    tcp_server = IPv6_TCPServer((server_settings["address"],
840
 
                                 server_settings["port"]),
841
 
                                tcp_handler,
842
 
                                settings=server_settings,
843
 
                                clients=clients)
 
887
    tcp_server.enable()
 
888
    tcp_server.server_activate()
 
889
    
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    # Find out what port we got
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    service.port = tcp_server.socket.getsockname()[1]
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    logger.info(u"Now listening on address %r, port %d, flowinfo %d,"