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# -*- mode: python; coding: utf-8 -*-
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# Mandos server - give out binary blobs to connecting clients.
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# This program is partly derived from an example program for an Avahi
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# service publisher, downloaded from
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# <http://avahi.org/wiki/PythonPublishExample>. This includes the
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# methods "add", "remove", "server_state_changed",
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# "entry_group_state_changed", "cleanup", and "activate" in the
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# "AvahiService" class, and some lines in "main".
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# Copyright © 2008-2011 Teddy Hogeborn
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# Copyright © 2008-2011 Björn Påhlsson
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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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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# Contact the authors at <mandos@recompile.se>.
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from __future__ import (division, absolute_import, print_function,
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import SocketServer as socketserver
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from optparse import OptionParser
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import gnutls.crypto
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import gnutls.connection
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import gnutls.errors
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import gnutls.library.functions
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import gnutls.library.constants
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import gnutls.library.types
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import ConfigParser as configparser
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import logging.handlers
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import cPickle as pickle
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import multiprocessing
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from dbus.mainloop.glib import DBusGMainLoop
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import xml.dom.minidom
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SO_BINDTODEVICE = socket.SO_BINDTODEVICE
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except AttributeError:
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from IN import SO_BINDTODEVICE
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SO_BINDTODEVICE = None
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stored_state_file = "clients.pickle"
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logger = logging.getLogger()
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syslogger = (logging.handlers.SysLogHandler
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(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
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address = str("/dev/log")))
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if_nametoindex = (ctypes.cdll.LoadLibrary
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(ctypes.util.find_library("c"))
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except (OSError, AttributeError):
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def if_nametoindex(interface):
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"Get an interface index the hard way, i.e. using fcntl()"
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SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
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with contextlib.closing(socket.socket()) as s:
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ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
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struct.pack(str("16s16x"),
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interface_index = struct.unpack(str("I"),
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return interface_index
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def initlogger(level=logging.WARNING):
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"""init logger and add loglevel"""
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syslogger.setFormatter(logging.Formatter
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('Mandos [%(process)d]: %(levelname)s:'
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logger.addHandler(syslogger)
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console = logging.StreamHandler()
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console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
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logger.addHandler(console)
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logger.setLevel(level)
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class CryptoError(Exception):
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class Crypto(object):
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"""A simple class for OpenPGP symmetric encryption & decryption"""
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self.gnupg = GnuPGInterface.GnuPG()
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self.tempdir = tempfile.mkdtemp(prefix="mandos-")
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self.gnupg = GnuPGInterface.GnuPG()
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self.gnupg.options.meta_interactive = False
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self.gnupg.options.homedir = self.tempdir
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self.gnupg.options.extra_args.extend(['--force-mdc',
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def __exit__ (self, exc_type, exc_value, traceback):
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if self.tempdir is not None:
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# Delete contents of tempdir
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for root, dirs, files in os.walk(self.tempdir,
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for filename in files:
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os.remove(os.path.join(root, filename))
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os.rmdir(os.path.join(root, dirname))
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os.rmdir(self.tempdir)
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def password_encode(self, password):
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# Passphrase can not be empty and can not contain newlines or
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# NUL bytes. So we prefix it and hex encode it.
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return b"mandos" + binascii.hexlify(password)
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def encrypt(self, data, password):
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self.gnupg.passphrase = self.password_encode(password)
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with open(os.devnull) as devnull:
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proc = self.gnupg.run(['--symmetric'],
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create_fhs=['stdin', 'stdout'],
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attach_fhs={'stderr': devnull})
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with contextlib.closing(proc.handles['stdin']) as f:
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with contextlib.closing(proc.handles['stdout']) as f:
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ciphertext = f.read()
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self.gnupg.passphrase = None
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def decrypt(self, data, password):
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self.gnupg.passphrase = self.password_encode(password)
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with open(os.devnull) as devnull:
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proc = self.gnupg.run(['--decrypt'],
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create_fhs=['stdin', 'stdout'],
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attach_fhs={'stderr': devnull})
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with contextlib.closing(proc.handles['stdin'] ) as f:
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with contextlib.closing(proc.handles['stdout']) as f:
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decrypted_plaintext = f.read()
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self.gnupg.passphrase = None
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return decrypted_plaintext
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class AvahiError(Exception):
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def __init__(self, value, *args, **kwargs):
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super(AvahiError, self).__init__(value, *args, **kwargs)
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def __unicode__(self):
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return unicode(repr(self.value))
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class AvahiServiceError(AvahiError):
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class AvahiGroupError(AvahiError):
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class AvahiService(object):
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"""An Avahi (Zeroconf) service.
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interface: integer; avahi.IF_UNSPEC or an interface index.
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Used to optionally bind to the specified interface.
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name: string; Example: 'Mandos'
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type: string; Example: '_mandos._tcp'.
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See <http://www.dns-sd.org/ServiceTypes.html>
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port: integer; what port to announce
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TXT: list of strings; TXT record for the service
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domain: string; Domain to publish on, default to .local if empty.
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host: string; Host to publish records for, default is localhost
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max_renames: integer; maximum number of renames
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rename_count: integer; counter so we only rename after collisions
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a sensible number of times
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group: D-Bus Entry Group
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bus: dbus.SystemBus()
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def __init__(self, interface = avahi.IF_UNSPEC, name = None,
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servicetype = None, port = None, TXT = None,
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domain = "", host = "", max_renames = 32768,
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protocol = avahi.PROTO_UNSPEC, bus = None):
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self.interface = interface
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self.type = servicetype
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self.TXT = TXT if TXT is not None else []
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self.rename_count = 0
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self.max_renames = max_renames
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self.protocol = protocol
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self.group = None # our entry group
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self.entry_group_state_changed_match = None
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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("No suitable Zeroconf service name found"
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" after %i retries, exiting.",
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raise AvahiServiceError("Too many renames")
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self.name = unicode(self.server
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.GetAlternativeServiceName(self.name))
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logger.info("Changing Zeroconf service name to %r ...",
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except dbus.exceptions.DBusException as error:
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logger.critical("DBusException: %s", error)
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self.rename_count += 1
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"""Derived from the Avahi example code"""
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if self.entry_group_state_changed_match is not None:
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self.entry_group_state_changed_match.remove()
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self.entry_group_state_changed_match = None
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if self.group is not None:
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"""Derived from the Avahi example code"""
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if self.group is None:
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self.group = dbus.Interface(
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self.bus.get_object(avahi.DBUS_NAME,
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self.server.EntryGroupNew()),
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avahi.DBUS_INTERFACE_ENTRY_GROUP)
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self.entry_group_state_changed_match = (
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self.group.connect_to_signal(
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'StateChanged', self.entry_group_state_changed))
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logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
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self.name, self.type)
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self.group.AddService(
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dbus.UInt32(0), # flags
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self.name, self.type,
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self.domain, self.host,
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dbus.UInt16(self.port),
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avahi.string_array_to_txt_array(self.TXT))
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def entry_group_state_changed(self, state, error):
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"""Derived from the Avahi example code"""
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logger.debug("Avahi entry group state change: %i", state)
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if state == avahi.ENTRY_GROUP_ESTABLISHED:
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logger.debug("Zeroconf service established.")
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elif state == avahi.ENTRY_GROUP_COLLISION:
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logger.info("Zeroconf service name collision.")
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elif state == avahi.ENTRY_GROUP_FAILURE:
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logger.critical("Avahi: Error in group state changed %s",
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raise AvahiGroupError("State changed: %s"
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"""Derived from the Avahi example code"""
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if self.group is not None:
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except (dbus.exceptions.UnknownMethodException,
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dbus.exceptions.DBusException):
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def server_state_changed(self, state, error=None):
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"""Derived from the Avahi example code"""
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logger.debug("Avahi server state change: %i", state)
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bad_states = { avahi.SERVER_INVALID:
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"Zeroconf server invalid",
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avahi.SERVER_REGISTERING: None,
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avahi.SERVER_COLLISION:
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"Zeroconf server name collision",
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avahi.SERVER_FAILURE:
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"Zeroconf server failure" }
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if state in bad_states:
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if bad_states[state] is not None:
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logger.error(bad_states[state])
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logger.error(bad_states[state] + ": %r", error)
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elif state == avahi.SERVER_RUNNING:
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logger.debug("Unknown state: %r", state)
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logger.debug("Unknown state: %r: %r", state, error)
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"""Derived from the Avahi example code"""
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if self.server is None:
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self.server = dbus.Interface(
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self.bus.get_object(avahi.DBUS_NAME,
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avahi.DBUS_PATH_SERVER,
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follow_name_owner_changes=True),
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avahi.DBUS_INTERFACE_SERVER)
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self.server.connect_to_signal("StateChanged",
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self.server_state_changed)
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self.server_state_changed(self.server.GetState())
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class AvahiServiceToSyslog(AvahiService):
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"""Add the new name to the syslog messages"""
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ret = AvahiService.rename(self)
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syslogger.setFormatter(logging.Formatter
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('Mandos (%s) [%%(process)d]:'
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' %%(levelname)s: %%(message)s'
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def _timedelta_to_milliseconds(td):
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"Convert a datetime.timedelta() to milliseconds"
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return ((td.days * 24 * 60 * 60 * 1000)
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+ (td.seconds * 1000)
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+ (td.microseconds // 1000))
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class Client(object):
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"""A representation of a client host served by this server.
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_approved: bool(); 'None' if not yet approved/disapproved
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approval_delay: datetime.timedelta(); Time to wait for approval
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approval_duration: datetime.timedelta(); Duration of one approval
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checker: subprocess.Popen(); a running checker process used
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to see if the client lives.
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'None' if no process is running.
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checker_callback_tag: a gobject event source tag, or None
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checker_command: string; External command which is run to check
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if client lives. %() expansions are done at
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runtime with vars(self) as dict, so that for
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instance %(name)s can be used in the command.
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checker_initiator_tag: a gobject event source tag, or None
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created: datetime.datetime(); (UTC) object creation
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client_structure: Object describing what attributes a client has
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and is used for storing the client at exit
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current_checker_command: string; current running checker_command
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disable_initiator_tag: a gobject event source tag, or None
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fingerprint: string (40 or 32 hexadecimal digits); used to
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uniquely identify the client
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host: string; available for use by the checker command
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interval: datetime.timedelta(); How often to start a new checker
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last_approval_request: datetime.datetime(); (UTC) or None
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last_checked_ok: datetime.datetime(); (UTC) or None
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last_checker_status: integer between 0 and 255 reflecting exit
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status of last checker. -1 reflects crashed
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last_enabled: datetime.datetime(); (UTC)
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name: string; from the config file, used in log messages and
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secret: bytestring; sent verbatim (over TLS) to client
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timeout: datetime.timedelta(); How long from last_checked_ok
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until this client is disabled
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extended_timeout: extra long timeout when password has been sent
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runtime_expansions: Allowed attributes for runtime expansion.
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expires: datetime.datetime(); time (UTC) when a client will be
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runtime_expansions = ("approval_delay", "approval_duration",
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"created", "enabled", "fingerprint",
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"host", "interval", "last_checked_ok",
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"last_enabled", "name", "timeout")
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def timeout_milliseconds(self):
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"Return the 'timeout' attribute in milliseconds"
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return _timedelta_to_milliseconds(self.timeout)
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def extended_timeout_milliseconds(self):
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"Return the 'extended_timeout' attribute in milliseconds"
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return _timedelta_to_milliseconds(self.extended_timeout)
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def interval_milliseconds(self):
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"Return the 'interval' attribute in milliseconds"
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return _timedelta_to_milliseconds(self.interval)
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def approval_delay_milliseconds(self):
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return _timedelta_to_milliseconds(self.approval_delay)
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def __init__(self, name = None, config=None):
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"""Note: the 'checker' key in 'config' sets the
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'checker_command' attribute and *not* the 'checker'
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def __init__(self, name=None, options=None, dn=None,
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password=None, passfile=None, fqdn=None,
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timeout=None, interval=-1):
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logger.debug("Creating client %r", self.name)
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# Uppercase and remove spaces from fingerprint for later
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# comparison purposes with return value from the fingerprint()
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self.fingerprint = (config["fingerprint"].upper()
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logger.debug(" Fingerprint: %s", self.fingerprint)
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if "secret" in config:
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self.secret = config["secret"].decode("base64")
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elif "secfile" in config:
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with open(os.path.expanduser(os.path.expandvars
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(config["secfile"])),
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self.secret = secfile.read()
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raise TypeError("No secret or secfile for client %s"
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self.host = config.get("host", "")
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self.created = datetime.datetime.utcnow()
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self.last_approval_request = None
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self.last_enabled = datetime.datetime.utcnow()
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self.last_checked_ok = None
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self.last_checker_status = None
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self.timeout = string_to_delta(config["timeout"])
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self.extended_timeout = string_to_delta(config
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["extended_timeout"])
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self.interval = string_to_delta(config["interval"])
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self.checker_initiator_tag = None
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self.disable_initiator_tag = None
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self.expires = datetime.datetime.utcnow() + self.timeout
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self.checker_callback_tag = None
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self.checker_command = config["checker"]
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self.current_checker_command = None
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self._approved = None
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self.approved_by_default = config.get("approved_by_default",
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self.approvals_pending = 0
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self.approval_delay = string_to_delta(
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config["approval_delay"])
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self.approval_duration = string_to_delta(
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config["approval_duration"])
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self.changedstate = (multiprocessing_manager
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.Condition(multiprocessing_manager
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self.client_structure = [attr for attr in
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self.__dict__.iterkeys()
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if not attr.startswith("_")]
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self.client_structure.append("client_structure")
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for name, t in inspect.getmembers(type(self),
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if not name.startswith("_"):
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self.client_structure.append(name)
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# Send notice to process children that client state has changed
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def send_changedstate(self):
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with self.changedstate:
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self.changedstate.notify_all()
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"""Start this client's checker and timeout hooks"""
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if getattr(self, "enabled", False):
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self.send_changedstate()
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self.expires = datetime.datetime.utcnow() + self.timeout
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self.last_enabled = datetime.datetime.utcnow()
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def disable(self, quiet=True):
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"""Disable this client."""
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if not getattr(self, "enabled", False):
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self.send_changedstate()
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logger.info("Disabling client %s", self.name)
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if getattr(self, "disable_initiator_tag", False):
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gobject.source_remove(self.disable_initiator_tag)
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self.disable_initiator_tag = None
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if getattr(self, "checker_initiator_tag", False):
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gobject.source_remove(self.checker_initiator_tag)
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self.checker_initiator_tag = None
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# Do not run this again if called by a gobject.timeout_add
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def init_checker(self):
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# Schedule a new checker to be started an 'interval' from now,
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# and every interval from then on.
557
self.checker_initiator_tag = (gobject.timeout_add
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(self.interval_milliseconds(),
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# Schedule a disable() when 'timeout' has passed
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self.disable_initiator_tag = (gobject.timeout_add
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(self.timeout_milliseconds(),
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# Also start a new checker *right now*.
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def checker_callback(self, pid, condition, command):
568
"""The checker has completed, so take appropriate actions."""
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self.checker_callback_tag = None
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if os.WIFEXITED(condition):
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self.last_checker_status = os.WEXITSTATUS(condition)
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if self.last_checker_status == 0:
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logger.info("Checker for %(name)s succeeded",
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logger.info("Checker for %(name)s failed",
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self.last_checker_status = -1
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logger.warning("Checker for %(name)s crashed?",
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def checked_ok(self, timeout=None):
586
"""Bump up the timeout for this client.
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This should only be called when the client has been seen,
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self.password = password
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self.password = open(passfile).readall()
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print "No Password or Passfile in client config file"
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# raise RuntimeError XXX
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self.password = "gazonk"
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self.created = datetime.datetime.now()
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if timeout is None:
592
timeout = self.timeout
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self.last_checked_ok = datetime.datetime.utcnow()
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if self.disable_initiator_tag is not None:
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gobject.source_remove(self.disable_initiator_tag)
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if getattr(self, "enabled", False):
597
self.disable_initiator_tag = (gobject.timeout_add
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(_timedelta_to_milliseconds
599
(timeout), self.disable))
600
self.expires = datetime.datetime.utcnow() + timeout
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def need_approval(self):
603
self.last_approval_request = datetime.datetime.utcnow()
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def start_checker(self):
606
"""Start a new checker subprocess if one is not running.
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If a checker already exists, leave it running and do
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# The reason for not killing a running checker is that if we
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# did that, then if a checker (for some reason) started
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# running slowly and taking more than 'interval' time, the
613
# client would inevitably timeout, since no checker would get
614
# a chance to run to completion. If we instead leave running
615
# checkers alone, the checker would have to take more time
616
# than 'timeout' for the client to be disabled, which is as it
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# If a checker exists, make sure it is not a zombie
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pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
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except (AttributeError, OSError) as error:
623
if (isinstance(error, OSError)
624
and error.errno != errno.ECHILD):
628
logger.warning("Checker was a zombie")
629
gobject.source_remove(self.checker_callback_tag)
630
self.checker_callback(pid, status,
631
self.current_checker_command)
632
# Start a new checker if needed
633
if self.checker is None:
635
# In case checker_command has exactly one % operator
636
command = self.checker_command % self.host
638
# Escape attributes for the shell
639
escaped_attrs = dict(
641
re.escape(unicode(str(getattr(self, attr, "")),
645
self.runtime_expansions)
648
command = self.checker_command % escaped_attrs
649
except TypeError as error:
650
logger.error('Could not format string "%s":'
651
' %s', self.checker_command, error)
652
return True # Try again later
653
self.current_checker_command = command
655
logger.info("Starting checker %r for %s",
657
# We don't need to redirect stdout and stderr, since
658
# in normal mode, that is already done by daemon(),
659
# and in debug mode we don't want to. (Stdin is
660
# always replaced by /dev/null.)
661
self.checker = subprocess.Popen(command,
664
self.checker_callback_tag = (gobject.child_watch_add
666
self.checker_callback,
668
# The checker may have completed before the gobject
669
# watch was added. Check for this.
670
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
672
gobject.source_remove(self.checker_callback_tag)
673
self.checker_callback(pid, status, command)
674
except OSError as error:
675
logger.error("Failed to start subprocess: %s",
677
# Re-run this periodically if run by gobject.timeout_add
680
def stop_checker(self):
681
"""Force the checker process, if any, to stop."""
682
if self.checker_callback_tag:
683
gobject.source_remove(self.checker_callback_tag)
684
self.checker_callback_tag = None
685
if getattr(self, "checker", None) is None:
687
logger.debug("Stopping checker for %(name)s", vars(self))
689
os.kill(self.checker.pid, signal.SIGTERM)
691
#if self.checker.poll() is None:
692
# os.kill(self.checker.pid, signal.SIGKILL)
693
except OSError as error:
694
if error.errno != errno.ESRCH: # No such process
699
def dbus_service_property(dbus_interface, signature="v",
700
access="readwrite", byte_arrays=False):
701
"""Decorators for marking methods of a DBusObjectWithProperties to
702
become properties on the D-Bus.
704
The decorated method will be called with no arguments by "Get"
705
and with one argument by "Set".
707
The parameters, where they are supported, are the same as
708
dbus.service.method, except there is only "signature", since the
709
type from Get() and the type sent to Set() is the same.
711
# Encoding deeply encoded byte arrays is not supported yet by the
712
# "Set" method, so we fail early here:
713
if byte_arrays and signature != "ay":
714
raise ValueError("Byte arrays not supported for non-'ay'"
715
" signature %r" % signature)
717
func._dbus_is_property = True
718
func._dbus_interface = dbus_interface
719
func._dbus_signature = signature
720
func._dbus_access = access
721
func._dbus_name = func.__name__
722
if func._dbus_name.endswith("_dbus_property"):
723
func._dbus_name = func._dbus_name[:-14]
724
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
729
class DBusPropertyException(dbus.exceptions.DBusException):
730
"""A base class for D-Bus property-related exceptions
732
def __unicode__(self):
733
return unicode(str(self))
736
class DBusPropertyAccessException(DBusPropertyException):
737
"""A property's access permissions disallows an operation.
742
class DBusPropertyNotFound(DBusPropertyException):
743
"""An attempt was made to access a non-existing property.
748
class DBusObjectWithProperties(dbus.service.Object):
749
"""A D-Bus object with properties.
751
Classes inheriting from this can use the dbus_service_property
752
decorator to expose methods as D-Bus properties. It exposes the
753
standard Get(), Set(), and GetAll() methods on the D-Bus.
757
def _is_dbus_property(obj):
758
return getattr(obj, "_dbus_is_property", False)
760
def _get_all_dbus_properties(self):
761
"""Returns a generator of (name, attribute) pairs
763
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
764
for cls in self.__class__.__mro__
766
inspect.getmembers(cls, self._is_dbus_property))
768
def _get_dbus_property(self, interface_name, property_name):
769
"""Returns a bound method if one exists which is a D-Bus
770
property with the specified name and interface.
772
for cls in self.__class__.__mro__:
773
for name, value in (inspect.getmembers
774
(cls, self._is_dbus_property)):
775
if (value._dbus_name == property_name
776
and value._dbus_interface == interface_name):
777
return value.__get__(self)
780
raise DBusPropertyNotFound(self.dbus_object_path + ":"
781
+ interface_name + "."
784
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
786
def Get(self, interface_name, property_name):
787
"""Standard D-Bus property Get() method, see D-Bus standard.
789
prop = self._get_dbus_property(interface_name, property_name)
790
if prop._dbus_access == "write":
791
raise DBusPropertyAccessException(property_name)
793
if not hasattr(value, "variant_level"):
795
return type(value)(value, variant_level=value.variant_level+1)
797
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
798
def Set(self, interface_name, property_name, value):
799
"""Standard D-Bus property Set() method, see D-Bus standard.
801
prop = self._get_dbus_property(interface_name, property_name)
802
if prop._dbus_access == "read":
803
raise DBusPropertyAccessException(property_name)
804
if prop._dbus_get_args_options["byte_arrays"]:
805
# The byte_arrays option is not supported yet on
806
# signatures other than "ay".
807
if prop._dbus_signature != "ay":
809
value = dbus.ByteArray(''.join(unichr(byte)
813
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
814
out_signature="a{sv}")
815
def GetAll(self, interface_name):
816
"""Standard D-Bus property GetAll() method, see D-Bus
819
Note: Will not include properties with access="write".
822
for name, prop in self._get_all_dbus_properties():
824
and interface_name != prop._dbus_interface):
825
# Interface non-empty but did not match
827
# Ignore write-only properties
828
if prop._dbus_access == "write":
831
if not hasattr(value, "variant_level"):
832
properties[name] = value
834
properties[name] = type(value)(value, variant_level=
835
value.variant_level+1)
836
return dbus.Dictionary(properties, signature="sv")
838
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
840
path_keyword='object_path',
841
connection_keyword='connection')
842
def Introspect(self, object_path, connection):
843
"""Standard D-Bus method, overloaded to insert property tags.
845
xmlstring = dbus.service.Object.Introspect(self, object_path,
848
document = xml.dom.minidom.parseString(xmlstring)
849
def make_tag(document, name, prop):
850
e = document.createElement("property")
851
e.setAttribute("name", name)
852
e.setAttribute("type", prop._dbus_signature)
853
e.setAttribute("access", prop._dbus_access)
855
for if_tag in document.getElementsByTagName("interface"):
856
for tag in (make_tag(document, name, prop)
858
in self._get_all_dbus_properties()
859
if prop._dbus_interface
860
== if_tag.getAttribute("name")):
861
if_tag.appendChild(tag)
862
# Add the names to the return values for the
863
# "org.freedesktop.DBus.Properties" methods
864
if (if_tag.getAttribute("name")
865
== "org.freedesktop.DBus.Properties"):
866
for cn in if_tag.getElementsByTagName("method"):
867
if cn.getAttribute("name") == "Get":
868
for arg in cn.getElementsByTagName("arg"):
869
if (arg.getAttribute("direction")
871
arg.setAttribute("name", "value")
872
elif cn.getAttribute("name") == "GetAll":
873
for arg in cn.getElementsByTagName("arg"):
874
if (arg.getAttribute("direction")
876
arg.setAttribute("name", "props")
877
xmlstring = document.toxml("utf-8")
879
except (AttributeError, xml.dom.DOMException,
880
xml.parsers.expat.ExpatError) as error:
881
logger.error("Failed to override Introspection method",
886
def datetime_to_dbus (dt, variant_level=0):
887
"""Convert a UTC datetime.datetime() to a D-Bus type."""
889
return dbus.String("", variant_level = variant_level)
890
return dbus.String(dt.isoformat(),
891
variant_level=variant_level)
894
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
896
"""Applied to an empty subclass of a D-Bus object, this metaclass
897
will add additional D-Bus attributes matching a certain pattern.
899
def __new__(mcs, name, bases, attr):
900
# Go through all the base classes which could have D-Bus
901
# methods, signals, or properties in them
902
for base in (b for b in bases
903
if issubclass(b, dbus.service.Object)):
904
# Go though all attributes of the base class
905
for attrname, attribute in inspect.getmembers(base):
906
# Ignore non-D-Bus attributes, and D-Bus attributes
907
# with the wrong interface name
908
if (not hasattr(attribute, "_dbus_interface")
909
or not attribute._dbus_interface
910
.startswith("se.recompile.Mandos")):
912
# Create an alternate D-Bus interface name based on
914
alt_interface = (attribute._dbus_interface
915
.replace("se.recompile.Mandos",
916
"se.bsnet.fukt.Mandos"))
917
# Is this a D-Bus signal?
918
if getattr(attribute, "_dbus_is_signal", False):
919
# Extract the original non-method function by
921
nonmethod_func = (dict(
922
zip(attribute.func_code.co_freevars,
923
attribute.__closure__))["func"]
925
# Create a new, but exactly alike, function
926
# object, and decorate it to be a new D-Bus signal
927
# with the alternate D-Bus interface name
928
new_function = (dbus.service.signal
930
attribute._dbus_signature)
932
nonmethod_func.func_code,
933
nonmethod_func.func_globals,
934
nonmethod_func.func_name,
935
nonmethod_func.func_defaults,
936
nonmethod_func.func_closure)))
937
# Define a creator of a function to call both the
938
# old and new functions, so both the old and new
939
# signals gets sent when the function is called
940
def fixscope(func1, func2):
941
"""This function is a scope container to pass
942
func1 and func2 to the "call_both" function
943
outside of its arguments"""
944
def call_both(*args, **kwargs):
945
"""This function will emit two D-Bus
946
signals by calling func1 and func2"""
947
func1(*args, **kwargs)
948
func2(*args, **kwargs)
950
# Create the "call_both" function and add it to
952
attr[attrname] = fixscope(attribute,
954
# Is this a D-Bus method?
955
elif getattr(attribute, "_dbus_is_method", False):
956
# Create a new, but exactly alike, function
957
# object. Decorate it to be a new D-Bus method
958
# with the alternate D-Bus interface name. Add it
960
attr[attrname] = (dbus.service.method
962
attribute._dbus_in_signature,
963
attribute._dbus_out_signature)
965
(attribute.func_code,
966
attribute.func_globals,
968
attribute.func_defaults,
969
attribute.func_closure)))
970
# Is this a D-Bus property?
971
elif getattr(attribute, "_dbus_is_property", False):
972
# Create a new, but exactly alike, function
973
# object, and decorate it to be a new D-Bus
974
# property with the alternate D-Bus interface
975
# name. Add it to the class.
976
attr[attrname] = (dbus_service_property
978
attribute._dbus_signature,
979
attribute._dbus_access,
981
._dbus_get_args_options
984
(attribute.func_code,
985
attribute.func_globals,
987
attribute.func_defaults,
988
attribute.func_closure)))
989
return type.__new__(mcs, name, bases, attr)
992
class ClientDBus(Client, DBusObjectWithProperties):
993
"""A Client class using D-Bus
996
dbus_object_path: dbus.ObjectPath
997
bus: dbus.SystemBus()
1000
runtime_expansions = (Client.runtime_expansions
1001
+ ("dbus_object_path",))
1003
# dbus.service.Object doesn't use super(), so we can't either.
1005
def __init__(self, bus = None, *args, **kwargs):
1007
Client.__init__(self, *args, **kwargs)
1009
self._approvals_pending = 0
1010
# Only now, when this client is initialized, can it show up on
1012
client_object_name = unicode(self.name).translate(
1013
{ord("."): ord("_"),
1014
ord("-"): ord("_")})
1015
self.dbus_object_path = (dbus.ObjectPath
1016
("/clients/" + client_object_name))
1017
DBusObjectWithProperties.__init__(self, self.bus,
1018
self.dbus_object_path)
1020
def notifychangeproperty(transform_func,
1021
dbus_name, type_func=lambda x: x,
1023
""" Modify a variable so that it's a property which announces
1024
its changes to DBus.
1026
transform_fun: Function that takes a value and a variant_level
1027
and transforms it to a D-Bus type.
1028
dbus_name: D-Bus name of the variable
1029
type_func: Function that transform the value before sending it
1030
to the D-Bus. Default: no transform
1031
variant_level: D-Bus variant level. Default: 1
1033
attrname = "_{0}".format(dbus_name)
1034
def setter(self, value):
1035
if hasattr(self, "dbus_object_path"):
1036
if (not hasattr(self, attrname) or
1037
type_func(getattr(self, attrname, None))
1038
!= type_func(value)):
1039
dbus_value = transform_func(type_func(value),
1042
self.PropertyChanged(dbus.String(dbus_name),
1044
setattr(self, attrname, value)
1046
return property(lambda self: getattr(self, attrname), setter)
1049
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1050
approvals_pending = notifychangeproperty(dbus.Boolean,
1053
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1054
last_enabled = notifychangeproperty(datetime_to_dbus,
1056
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1057
type_func = lambda checker:
1058
checker is not None)
1059
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1061
last_approval_request = notifychangeproperty(
1062
datetime_to_dbus, "LastApprovalRequest")
1063
approved_by_default = notifychangeproperty(dbus.Boolean,
1064
"ApprovedByDefault")
1065
approval_delay = notifychangeproperty(dbus.UInt16,
1068
_timedelta_to_milliseconds)
1069
approval_duration = notifychangeproperty(
1070
dbus.UInt16, "ApprovalDuration",
1071
type_func = _timedelta_to_milliseconds)
1072
host = notifychangeproperty(dbus.String, "Host")
1073
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
1075
_timedelta_to_milliseconds)
1076
extended_timeout = notifychangeproperty(
1077
dbus.UInt16, "ExtendedTimeout",
1078
type_func = _timedelta_to_milliseconds)
1079
interval = notifychangeproperty(dbus.UInt16,
1082
_timedelta_to_milliseconds)
1083
checker_command = notifychangeproperty(dbus.String, "Checker")
1085
del notifychangeproperty
1087
def __del__(self, *args, **kwargs):
1089
self.remove_from_connection()
1092
if hasattr(DBusObjectWithProperties, "__del__"):
1093
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1094
Client.__del__(self, *args, **kwargs)
1096
def checker_callback(self, pid, condition, command,
1098
self.checker_callback_tag = None
1100
if os.WIFEXITED(condition):
1101
exitstatus = os.WEXITSTATUS(condition)
1103
self.CheckerCompleted(dbus.Int16(exitstatus),
1104
dbus.Int64(condition),
1105
dbus.String(command))
1108
self.CheckerCompleted(dbus.Int16(-1),
1109
dbus.Int64(condition),
1110
dbus.String(command))
1112
return Client.checker_callback(self, pid, condition, command,
1115
def start_checker(self, *args, **kwargs):
1116
old_checker = self.checker
1117
if self.checker is not None:
1118
old_checker_pid = self.checker.pid
1120
old_checker_pid = None
1121
r = Client.start_checker(self, *args, **kwargs)
1122
# Only if new checker process was started
1123
if (self.checker is not None
1124
and old_checker_pid != self.checker.pid):
1126
self.CheckerStarted(self.current_checker_command)
1129
def _reset_approved(self):
1130
self._approved = None
1133
def approve(self, value=True):
1134
self.send_changedstate()
1135
self._approved = value
1136
gobject.timeout_add(_timedelta_to_milliseconds
1137
(self.approval_duration),
1138
self._reset_approved)
1141
## D-Bus methods, signals & properties
1142
_interface = "se.recompile.Mandos.Client"
1146
# CheckerCompleted - signal
1147
@dbus.service.signal(_interface, signature="nxs")
1148
def CheckerCompleted(self, exitcode, waitstatus, command):
1152
# CheckerStarted - signal
1153
@dbus.service.signal(_interface, signature="s")
1154
def CheckerStarted(self, command):
1158
# PropertyChanged - signal
1159
@dbus.service.signal(_interface, signature="sv")
1160
def PropertyChanged(self, property, value):
1164
# GotSecret - signal
1165
@dbus.service.signal(_interface)
1166
def GotSecret(self):
1168
Is sent after a successful transfer of secret from the Mandos
1169
server to mandos-client
1174
@dbus.service.signal(_interface, signature="s")
1175
def Rejected(self, reason):
1179
# NeedApproval - signal
1180
@dbus.service.signal(_interface, signature="tb")
1181
def NeedApproval(self, timeout, default):
1183
return self.need_approval()
1185
# NeRwequest - signal
1186
@dbus.service.signal(_interface, signature="s")
1187
def NewRequest(self, ip):
1189
Is sent after a client request a password.
1196
@dbus.service.method(_interface, in_signature="b")
1197
def Approve(self, value):
1200
# CheckedOK - method
1201
@dbus.service.method(_interface)
1202
def CheckedOK(self):
1206
@dbus.service.method(_interface)
1211
# StartChecker - method
1212
@dbus.service.method(_interface)
1213
def StartChecker(self):
1215
self.start_checker()
1218
@dbus.service.method(_interface)
1223
# StopChecker - method
1224
@dbus.service.method(_interface)
1225
def StopChecker(self):
1230
# ApprovalPending - property
1231
@dbus_service_property(_interface, signature="b", access="read")
1232
def ApprovalPending_dbus_property(self):
1233
return dbus.Boolean(bool(self.approvals_pending))
1235
# ApprovedByDefault - property
1236
@dbus_service_property(_interface, signature="b",
1238
def ApprovedByDefault_dbus_property(self, value=None):
1239
if value is None: # get
1240
return dbus.Boolean(self.approved_by_default)
1241
self.approved_by_default = bool(value)
1243
# ApprovalDelay - property
1244
@dbus_service_property(_interface, signature="t",
1246
def ApprovalDelay_dbus_property(self, value=None):
1247
if value is None: # get
1248
return dbus.UInt64(self.approval_delay_milliseconds())
1249
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1251
# ApprovalDuration - property
1252
@dbus_service_property(_interface, signature="t",
1254
def ApprovalDuration_dbus_property(self, value=None):
1255
if value is None: # get
1256
return dbus.UInt64(_timedelta_to_milliseconds(
1257
self.approval_duration))
1258
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1261
@dbus_service_property(_interface, signature="s", access="read")
1262
def Name_dbus_property(self):
1263
return dbus.String(self.name)
1265
# Fingerprint - property
1266
@dbus_service_property(_interface, signature="s", access="read")
1267
def Fingerprint_dbus_property(self):
1268
return dbus.String(self.fingerprint)
1271
@dbus_service_property(_interface, signature="s",
1273
def Host_dbus_property(self, value=None):
1274
if value is None: # get
1275
return dbus.String(self.host)
1278
# Created - property
1279
@dbus_service_property(_interface, signature="s", access="read")
1280
def Created_dbus_property(self):
1281
return dbus.String(datetime_to_dbus(self.created))
1283
# LastEnabled - property
1284
@dbus_service_property(_interface, signature="s", access="read")
1285
def LastEnabled_dbus_property(self):
1286
return datetime_to_dbus(self.last_enabled)
1288
# Enabled - property
1289
@dbus_service_property(_interface, signature="b",
1291
def Enabled_dbus_property(self, value=None):
1292
if value is None: # get
1293
return dbus.Boolean(self.enabled)
1299
# LastCheckedOK - property
1300
@dbus_service_property(_interface, signature="s",
1302
def LastCheckedOK_dbus_property(self, value=None):
1303
if value is not None:
1306
return datetime_to_dbus(self.last_checked_ok)
1308
# Expires - property
1309
@dbus_service_property(_interface, signature="s", access="read")
1310
def Expires_dbus_property(self):
1311
return datetime_to_dbus(self.expires)
1313
# LastApprovalRequest - property
1314
@dbus_service_property(_interface, signature="s", access="read")
1315
def LastApprovalRequest_dbus_property(self):
1316
return datetime_to_dbus(self.last_approval_request)
1318
# Timeout - property
1319
@dbus_service_property(_interface, signature="t",
1321
def Timeout_dbus_property(self, value=None):
1322
if value is None: # get
1323
return dbus.UInt64(self.timeout_milliseconds())
1324
self.timeout = datetime.timedelta(0, 0, 0, value)
1325
if getattr(self, "disable_initiator_tag", None) is None:
1327
# Reschedule timeout
1328
gobject.source_remove(self.disable_initiator_tag)
1329
self.disable_initiator_tag = None
1331
time_to_die = _timedelta_to_milliseconds((self
1336
if time_to_die <= 0:
1337
# The timeout has passed
1340
self.expires = (datetime.datetime.utcnow()
1341
+ datetime.timedelta(milliseconds =
1343
self.disable_initiator_tag = (gobject.timeout_add
1344
(time_to_die, self.disable))
1346
# ExtendedTimeout - property
1347
@dbus_service_property(_interface, signature="t",
1349
def ExtendedTimeout_dbus_property(self, value=None):
1350
if value is None: # get
1351
return dbus.UInt64(self.extended_timeout_milliseconds())
1352
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1354
# Interval - property
1355
@dbus_service_property(_interface, signature="t",
1357
def Interval_dbus_property(self, value=None):
1358
if value is None: # get
1359
return dbus.UInt64(self.interval_milliseconds())
1360
self.interval = datetime.timedelta(0, 0, 0, value)
1361
if getattr(self, "checker_initiator_tag", None) is None:
1363
# Reschedule checker run
1364
gobject.source_remove(self.checker_initiator_tag)
1365
self.checker_initiator_tag = (gobject.timeout_add
1366
(value, self.start_checker))
1367
self.start_checker() # Start one now, too
1369
# Checker - property
1370
@dbus_service_property(_interface, signature="s",
1372
def Checker_dbus_property(self, value=None):
1373
if value is None: # get
1374
return dbus.String(self.checker_command)
1375
self.checker_command = value
1377
# CheckerRunning - property
1378
@dbus_service_property(_interface, signature="b",
1380
def CheckerRunning_dbus_property(self, value=None):
1381
if value is None: # get
1382
return dbus.Boolean(self.checker is not None)
1384
self.start_checker()
1388
# ObjectPath - property
1389
@dbus_service_property(_interface, signature="o", access="read")
1390
def ObjectPath_dbus_property(self):
1391
return self.dbus_object_path # is already a dbus.ObjectPath
1394
@dbus_service_property(_interface, signature="ay",
1395
access="write", byte_arrays=True)
1396
def Secret_dbus_property(self, value):
1397
self.secret = str(value)
1402
class ProxyClient(object):
1403
def __init__(self, child_pipe, fpr, address):
1404
self._pipe = child_pipe
1405
self._pipe.send(('init', fpr, address))
1406
if not self._pipe.recv():
1409
def __getattribute__(self, name):
1410
if(name == '_pipe'):
1411
return super(ProxyClient, self).__getattribute__(name)
1412
self._pipe.send(('getattr', name))
1413
data = self._pipe.recv()
1414
if data[0] == 'data':
1416
if data[0] == 'function':
1417
def func(*args, **kwargs):
1418
self._pipe.send(('funcall', name, args, kwargs))
1419
return self._pipe.recv()[1]
1422
def __setattr__(self, name, value):
1423
if(name == '_pipe'):
1424
return super(ProxyClient, self).__setattr__(name, value)
1425
self._pipe.send(('setattr', name, value))
1428
class ClientDBusTransitional(ClientDBus):
1429
__metaclass__ = AlternateDBusNamesMetaclass
1432
class ClientHandler(socketserver.BaseRequestHandler, object):
1433
"""A class to handle client connections.
1435
Instantiated once for each connection to handle it.
1436
Note: This will run in its own forked process."""
1439
with contextlib.closing(self.server.child_pipe) as child_pipe:
1440
logger.info("TCP connection from: %s",
1441
unicode(self.client_address))
1442
logger.debug("Pipe FD: %d",
1443
self.server.child_pipe.fileno())
1445
session = (gnutls.connection
1446
.ClientSession(self.request,
1448
.X509Credentials()))
1450
# Note: gnutls.connection.X509Credentials is really a
1451
# generic GnuTLS certificate credentials object so long as
1452
# no X.509 keys are added to it. Therefore, we can use it
1453
# here despite using OpenPGP certificates.
1455
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1456
# "+AES-256-CBC", "+SHA1",
1457
# "+COMP-NULL", "+CTYPE-OPENPGP",
1459
# Use a fallback default, since this MUST be set.
1460
priority = self.server.gnutls_priority
1461
if priority is None:
1463
(gnutls.library.functions
1464
.gnutls_priority_set_direct(session._c_object,
1467
# Start communication using the Mandos protocol
1468
# Get protocol number
1469
line = self.request.makefile().readline()
1470
logger.debug("Protocol version: %r", line)
1472
if int(line.strip().split()[0]) > 1:
1474
except (ValueError, IndexError, RuntimeError) as error:
1475
logger.error("Unknown protocol version: %s", error)
1478
# Start GnuTLS connection
1481
except gnutls.errors.GNUTLSError as error:
1482
logger.warning("Handshake failed: %s", error)
1483
# Do not run session.bye() here: the session is not
1484
# established. Just abandon the request.
1486
logger.debug("Handshake succeeded")
1488
approval_required = False
1491
fpr = self.fingerprint(self.peer_certificate
1494
gnutls.errors.GNUTLSError) as error:
1495
logger.warning("Bad certificate: %s", error)
1497
logger.debug("Fingerprint: %s", fpr)
1498
if self.server.use_dbus:
1500
client.NewRequest(str(self.client_address))
1503
client = ProxyClient(child_pipe, fpr,
1504
self.client_address)
1508
if client.approval_delay:
1509
delay = client.approval_delay
1510
client.approvals_pending += 1
1511
approval_required = True
1514
if not client.enabled:
1515
logger.info("Client %s is disabled",
1517
if self.server.use_dbus:
1519
client.Rejected("Disabled")
1522
if client._approved or not client.approval_delay:
1523
#We are approved or approval is disabled
1525
elif client._approved is None:
1526
logger.info("Client %s needs approval",
1528
if self.server.use_dbus:
1530
client.NeedApproval(
1531
client.approval_delay_milliseconds(),
1532
client.approved_by_default)
1534
logger.warning("Client %s was not approved",
1536
if self.server.use_dbus:
1538
client.Rejected("Denied")
1541
#wait until timeout or approved
1542
time = datetime.datetime.now()
1543
client.changedstate.acquire()
1544
(client.changedstate.wait
1545
(float(client._timedelta_to_milliseconds(delay)
1547
client.changedstate.release()
1548
time2 = datetime.datetime.now()
1549
if (time2 - time) >= delay:
1550
if not client.approved_by_default:
1551
logger.warning("Client %s timed out while"
1552
" waiting for approval",
1554
if self.server.use_dbus:
1556
client.Rejected("Approval timed out")
1561
delay -= time2 - time
1564
while sent_size < len(client.secret):
1566
sent = session.send(client.secret[sent_size:])
1567
except gnutls.errors.GNUTLSError as error:
1568
logger.warning("gnutls send failed")
1570
logger.debug("Sent: %d, remaining: %d",
1571
sent, len(client.secret)
1572
- (sent_size + sent))
1575
logger.info("Sending secret to %s", client.name)
1576
# bump the timeout using extended_timeout
1577
client.checked_ok(client.extended_timeout)
1578
if self.server.use_dbus:
1583
if approval_required:
1584
client.approvals_pending -= 1
1587
except gnutls.errors.GNUTLSError as error:
1588
logger.warning("GnuTLS bye failed")
1591
def peer_certificate(session):
1592
"Return the peer's OpenPGP certificate as a bytestring"
1593
# If not an OpenPGP certificate...
1594
if (gnutls.library.functions
1595
.gnutls_certificate_type_get(session._c_object)
1596
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1597
# ...do the normal thing
1598
return session.peer_certificate
1599
list_size = ctypes.c_uint(1)
1600
cert_list = (gnutls.library.functions
1601
.gnutls_certificate_get_peers
1602
(session._c_object, ctypes.byref(list_size)))
1603
if not bool(cert_list) and list_size.value != 0:
1604
raise gnutls.errors.GNUTLSError("error getting peer"
1606
if list_size.value == 0:
1609
return ctypes.string_at(cert.data, cert.size)
1612
def fingerprint(openpgp):
1613
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1614
# New GnuTLS "datum" with the OpenPGP public key
1615
datum = (gnutls.library.types
1616
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1619
ctypes.c_uint(len(openpgp))))
1620
# New empty GnuTLS certificate
1621
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1622
(gnutls.library.functions
1623
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
1624
# Import the OpenPGP public key into the certificate
1625
(gnutls.library.functions
1626
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1627
gnutls.library.constants
1628
.GNUTLS_OPENPGP_FMT_RAW))
1629
# Verify the self signature in the key
1630
crtverify = ctypes.c_uint()
1631
(gnutls.library.functions
1632
.gnutls_openpgp_crt_verify_self(crt, 0,
1633
ctypes.byref(crtverify)))
1634
if crtverify.value != 0:
1635
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1636
raise (gnutls.errors.CertificateSecurityError
1638
# New buffer for the fingerprint
1639
buf = ctypes.create_string_buffer(20)
1640
buf_len = ctypes.c_size_t()
1641
# Get the fingerprint from the certificate into the buffer
1642
(gnutls.library.functions
1643
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1644
ctypes.byref(buf_len)))
1645
# Deinit the certificate
1646
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1647
# Convert the buffer to a Python bytestring
1648
fpr = ctypes.string_at(buf, buf_len.value)
1649
# Convert the bytestring to hexadecimal notation
1650
hex_fpr = binascii.hexlify(fpr).upper()
1654
class MultiprocessingMixIn(object):
1655
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1656
def sub_process_main(self, request, address):
1658
self.finish_request(request, address)
1660
self.handle_error(request, address)
1661
self.close_request(request)
1663
def process_request(self, request, address):
1664
"""Start a new process to process the request."""
1665
proc = multiprocessing.Process(target = self.sub_process_main,
1672
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1673
""" adds a pipe to the MixIn """
1674
def process_request(self, request, client_address):
1675
"""Overrides and wraps the original process_request().
1677
This function creates a new pipe in self.pipe
1679
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1681
proc = MultiprocessingMixIn.process_request(self, request,
1683
self.child_pipe.close()
1684
self.add_pipe(parent_pipe, proc)
1686
def add_pipe(self, parent_pipe, proc):
1687
"""Dummy function; override as necessary"""
1688
raise NotImplementedError
1691
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1692
socketserver.TCPServer, object):
1693
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1696
enabled: Boolean; whether this server is activated yet
1697
interface: None or a network interface name (string)
1698
use_ipv6: Boolean; to use IPv6 or not
1700
def __init__(self, server_address, RequestHandlerClass,
1701
interface=None, use_ipv6=True):
1702
self.interface = interface
1704
self.address_family = socket.AF_INET6
1705
socketserver.TCPServer.__init__(self, server_address,
1706
RequestHandlerClass)
1707
def server_bind(self):
1708
"""This overrides the normal server_bind() function
1709
to bind to an interface if one was specified, and also NOT to
1710
bind to an address or port if they were not specified."""
1711
if self.interface is not None:
1712
if SO_BINDTODEVICE is None:
1713
logger.error("SO_BINDTODEVICE does not exist;"
1714
" cannot bind to interface %s",
34
timeout = options.timeout
35
self.timeout = timeout
37
interval = options.interval
38
self.interval = interval
39
self.next_check = datetime.datetime.now()
42
class server_metaclass(type):
43
"Common behavior for the UDP and TCP server classes"
44
def __new__(cls, name, bases, attrs):
45
attrs["address_family"] = socket.AF_INET6
46
attrs["allow_reuse_address"] = True
47
def server_bind(self):
48
if self.options.interface:
49
if not hasattr(socket, "SO_BINDTODEVICE"):
50
# From /usr/include/asm-i486/socket.h
51
socket.SO_BINDTODEVICE = 25
1718
53
self.socket.setsockopt(socket.SOL_SOCKET,
1722
except socket.error as error:
54
socket.SO_BINDTODEVICE,
55
self.options.interface)
56
except socket.error, error:
1723
57
if error[0] == errno.EPERM:
1724
logger.error("No permission to"
1725
" bind to interface %s",
1727
elif error[0] == errno.ENOPROTOOPT:
1728
logger.error("SO_BINDTODEVICE not available;"
1729
" cannot bind to interface %s",
58
print "Warning: No permission to bind to interface", \
59
self.options.interface
1733
# Only bind(2) the socket if we really need to.
1734
if self.server_address[0] or self.server_address[1]:
1735
if not self.server_address[0]:
1736
if self.address_family == socket.AF_INET6:
1737
any_address = "::" # in6addr_any
1739
any_address = socket.INADDR_ANY
1740
self.server_address = (any_address,
1741
self.server_address[1])
1742
elif not self.server_address[1]:
1743
self.server_address = (self.server_address[0],
1745
# if self.interface:
1746
# self.server_address = (self.server_address[0],
1751
return socketserver.TCPServer.server_bind(self)
1754
class MandosServer(IPv6_TCPServer):
1758
clients: set of Client objects
1759
gnutls_priority GnuTLS priority string
1760
use_dbus: Boolean; to emit D-Bus signals or not
1762
Assumes a gobject.MainLoop event loop.
1764
def __init__(self, server_address, RequestHandlerClass,
1765
interface=None, use_ipv6=True, clients=None,
1766
gnutls_priority=None, use_dbus=True):
1767
self.enabled = False
1768
self.clients = clients
1769
if self.clients is None:
1771
self.use_dbus = use_dbus
1772
self.gnutls_priority = gnutls_priority
1773
IPv6_TCPServer.__init__(self, server_address,
1774
RequestHandlerClass,
1775
interface = interface,
1776
use_ipv6 = use_ipv6)
1777
def server_activate(self):
1779
return socketserver.TCPServer.server_activate(self)
1784
def add_pipe(self, parent_pipe, proc):
1785
# Call "handle_ipc" for both data and EOF events
1786
gobject.io_add_watch(parent_pipe.fileno(),
1787
gobject.IO_IN | gobject.IO_HUP,
1788
functools.partial(self.handle_ipc,
1793
def handle_ipc(self, source, condition, parent_pipe=None,
1794
proc = None, client_object=None):
1796
gobject.IO_IN: "IN", # There is data to read.
1797
gobject.IO_OUT: "OUT", # Data can be written (without
1799
gobject.IO_PRI: "PRI", # There is urgent data to read.
1800
gobject.IO_ERR: "ERR", # Error condition.
1801
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1802
# broken, usually for pipes and
1805
conditions_string = ' | '.join(name
1807
condition_names.iteritems()
1808
if cond & condition)
1809
# error, or the other end of multiprocessing.Pipe has closed
1810
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
1811
# Wait for other process to exit
1815
# Read a request from the child
1816
request = parent_pipe.recv()
1817
command = request[0]
1819
if command == 'init':
1821
address = request[2]
1823
for c in self.clients.itervalues():
1824
if c.fingerprint == fpr:
1828
logger.info("Client not found for fingerprint: %s, ad"
1829
"dress: %s", fpr, address)
1832
mandos_dbus_service.ClientNotFound(fpr,
1834
parent_pipe.send(False)
1837
gobject.io_add_watch(parent_pipe.fileno(),
1838
gobject.IO_IN | gobject.IO_HUP,
1839
functools.partial(self.handle_ipc,
1845
parent_pipe.send(True)
1846
# remove the old hook in favor of the new above hook on
1849
if command == 'funcall':
1850
funcname = request[1]
1854
parent_pipe.send(('data', getattr(client_object,
1858
if command == 'getattr':
1859
attrname = request[1]
1860
if callable(client_object.__getattribute__(attrname)):
1861
parent_pipe.send(('function',))
1863
parent_pipe.send(('data', client_object
1864
.__getattribute__(attrname)))
1866
if command == 'setattr':
1867
attrname = request[1]
1869
setattr(client_object, attrname, value)
62
return super(type(self), self).server_bind()
63
attrs["server_bind"] = server_bind
64
def init(self, *args, **kwargs):
65
if "options" in kwargs:
66
self.options = kwargs["options"]
68
if "clients" in kwargs:
69
self.clients = kwargs["clients"]
71
if "credentials" in kwargs:
72
self.credentials = kwargs["credentials"]
73
del kwargs["credentials"]
74
return super(type(self), self).__init__(*args, **kwargs)
75
attrs["__init__"] = init
76
return type.__new__(cls, name, bases, attrs)
79
class udp_handler(SocketServer.DatagramRequestHandler, object):
81
self.wfile.write("Polo")
82
print "UDP request answered"
85
class IPv6_UDPServer(SocketServer.UDPServer, object):
86
__metaclass__ = server_metaclass
87
def verify_request(self, request, client_address):
88
print "UDP request came"
89
return request[0] == "Marco"
92
class tcp_handler(SocketServer.BaseRequestHandler, object):
94
print "TCP request came"
95
print "Request:", self.request
96
print "Client Address:", self.client_address
97
print "Server:", self.server
98
session = gnutls.connection.ServerSession(self.request,
99
self.server.credentials)
101
if session.peer_certificate:
102
print "DN:", session.peer_certificate.subject
104
session.verify_peer()
105
except gnutls.errors.CertificateError, error:
106
print "Verify failed", error
110
session.send(dict((client.dn, client.password)
111
for client in self.server.clients)
112
[session.peer_certificate.subject])
114
session.send("gazonk")
119
class IPv6_TCPServer(SocketServer.ForkingTCPServer, object):
120
__metaclass__ = server_metaclass
121
request_queue_size = 1024
1874
126
def string_to_delta(interval):
1875
127
"""Parse a string and return a datetime.timedelta
1877
129
>>> string_to_delta('7d')
1878
130
datetime.timedelta(7)
1879
131
>>> string_to_delta('60s')
1882
134
datetime.timedelta(0, 3600)
1883
135
>>> string_to_delta('24h')
1884
136
datetime.timedelta(1)
1885
>>> string_to_delta('1w')
137
>>> string_to_delta(u'1w')
1886
138
datetime.timedelta(7)
1887
>>> string_to_delta('5m 30s')
1888
datetime.timedelta(0, 330)
1890
timevalue = datetime.timedelta(0)
1891
for s in interval.split():
1893
suffix = unicode(s[-1])
1896
delta = datetime.timedelta(value)
1898
delta = datetime.timedelta(0, value)
1900
delta = datetime.timedelta(0, 0, 0, 0, value)
1902
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1904
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1906
raise ValueError("Unknown suffix %r" % suffix)
1907
except (ValueError, IndexError) as e:
1908
raise ValueError(*(e.args))
1913
def daemon(nochdir = False, noclose = False):
1914
"""See daemon(3). Standard BSD Unix function.
1916
This should really exist as os.daemon, but it doesn't (yet)."""
1925
# Close all standard open file descriptors
1926
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1927
if not stat.S_ISCHR(os.fstat(null).st_mode):
1928
raise OSError(errno.ENODEV,
1929
"%s not a character device"
1931
os.dup2(null, sys.stdin.fileno())
1932
os.dup2(null, sys.stdout.fileno())
1933
os.dup2(null, sys.stderr.fileno())
141
suffix=unicode(interval[-1])
142
value=int(interval[:-1])
144
delta = datetime.timedelta(value)
146
delta = datetime.timedelta(0, value)
148
delta = datetime.timedelta(0, 0, 0, 0, value)
150
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
152
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
155
except (ValueError, IndexError):
1940
##################################################################
1941
# Parsing of options, both command line and config file
1943
parser = argparse.ArgumentParser()
1944
parser.add_argument("-v", "--version", action="version",
1945
version = "%%(prog)s %s" % version,
1946
help="show version number and exit")
1947
parser.add_argument("-i", "--interface", metavar="IF",
1948
help="Bind to interface IF")
1949
parser.add_argument("-a", "--address",
1950
help="Address to listen for requests on")
1951
parser.add_argument("-p", "--port", type=int,
1952
help="Port number to receive requests on")
1953
parser.add_argument("--check", action="store_true",
1954
help="Run self-test")
1955
parser.add_argument("--debug", action="store_true",
1956
help="Debug mode; run in foreground and log"
1958
parser.add_argument("--debuglevel", metavar="LEVEL",
1959
help="Debug level for stdout output")
1960
parser.add_argument("--priority", help="GnuTLS"
1961
" priority string (see GnuTLS documentation)")
1962
parser.add_argument("--servicename",
1963
metavar="NAME", help="Zeroconf service name")
1964
parser.add_argument("--configdir",
1965
default="/etc/mandos", metavar="DIR",
1966
help="Directory to search for configuration"
1968
parser.add_argument("--no-dbus", action="store_false",
1969
dest="use_dbus", help="Do not provide D-Bus"
1970
" system bus interface")
1971
parser.add_argument("--no-ipv6", action="store_false",
1972
dest="use_ipv6", help="Do not use IPv6")
1973
parser.add_argument("--no-restore", action="store_false",
1974
dest="restore", help="Do not restore stored"
1976
parser.add_argument("--statedir", metavar="DIR",
1977
help="Directory to save/restore state in")
1979
options = parser.parse_args()
161
parser = OptionParser()
162
parser.add_option("-i", "--interface", type="string",
163
default="eth0", metavar="IF",
164
help="Interface to bind to")
165
parser.add_option("--cert", type="string", default="cert.pem",
167
help="Public key certificate to use")
168
parser.add_option("--key", type="string", default="key.pem",
170
help="Private key to use")
171
parser.add_option("--ca", type="string", default="ca.pem",
173
help="Certificate Authority certificate to use")
174
parser.add_option("--crl", type="string", default="crl.pem",
176
help="Certificate Revokation List to use")
177
parser.add_option("-p", "--port", type="int", default=49001,
178
help="Port number to receive requests on")
179
parser.add_option("--dh", type="int", metavar="BITS",
180
help="DH group to use")
181
parser.add_option("-t", "--timeout", type="string", # Parsed later
183
help="Amount of downtime allowed for clients")
184
parser.add_option("--interval", type="string", # Parsed later
186
help="How often to check that a client is up")
187
parser.add_option("--check", action="store_true", default=False,
188
help="Run self-test")
189
(options, args) = parser.parse_args()
1981
191
if options.check:
1983
193
doctest.testmod()
1986
# Default values for config file for server-global settings
1987
server_defaults = { "interface": "",
1992
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1993
"servicename": "Mandos",
1998
"statedir": "/var/lib/mandos"
2001
# Parse config file for server-global settings
2002
server_config = configparser.SafeConfigParser(server_defaults)
2004
server_config.read(os.path.join(options.configdir,
2006
# Convert the SafeConfigParser object to a dict
2007
server_settings = server_config.defaults()
2008
# Use the appropriate methods on the non-string config options
2009
for option in ("debug", "use_dbus", "use_ipv6"):
2010
server_settings[option] = server_config.getboolean("DEFAULT",
2012
if server_settings["port"]:
2013
server_settings["port"] = server_config.getint("DEFAULT",
2017
# Override the settings from the config file with command line
2019
for option in ("interface", "address", "port", "debug",
2020
"priority", "servicename", "configdir",
2021
"use_dbus", "use_ipv6", "debuglevel", "restore",
2023
value = getattr(options, option)
2024
if value is not None:
2025
server_settings[option] = value
2027
# Force all strings to be unicode
2028
for option in server_settings.keys():
2029
if type(server_settings[option]) is str:
2030
server_settings[option] = unicode(server_settings[option])
2031
# Now we have our good server settings in "server_settings"
2033
##################################################################
2036
debug = server_settings["debug"]
2037
debuglevel = server_settings["debuglevel"]
2038
use_dbus = server_settings["use_dbus"]
2039
use_ipv6 = server_settings["use_ipv6"]
2040
stored_state_path = os.path.join(server_settings["statedir"],
2044
initlogger(logging.DEBUG)
2049
level = getattr(logging, debuglevel.upper())
2052
if server_settings["servicename"] != "Mandos":
2053
syslogger.setFormatter(logging.Formatter
2054
('Mandos (%s) [%%(process)d]:'
2055
' %%(levelname)s: %%(message)s'
2056
% server_settings["servicename"]))
2058
# Parse config file with clients
2059
client_defaults = { "timeout": "5m",
2060
"extended_timeout": "15m",
2062
"checker": "fping -q -- %%(host)s",
2064
"approval_delay": "0s",
2065
"approval_duration": "1s",
2067
client_config = configparser.SafeConfigParser(client_defaults)
2068
client_config.read(os.path.join(server_settings["configdir"],
2071
global mandos_dbus_service
2072
mandos_dbus_service = None
2074
tcp_server = MandosServer((server_settings["address"],
2075
server_settings["port"]),
2077
interface=(server_settings["interface"]
2081
server_settings["priority"],
2084
pidfilename = "/var/run/mandos.pid"
2086
pidfile = open(pidfilename, "w")
2088
logger.error("Could not open file %r", pidfilename)
2091
uid = pwd.getpwnam("_mandos").pw_uid
2092
gid = pwd.getpwnam("_mandos").pw_gid
2095
uid = pwd.getpwnam("mandos").pw_uid
2096
gid = pwd.getpwnam("mandos").pw_gid
2099
uid = pwd.getpwnam("nobody").pw_uid
2100
gid = pwd.getpwnam("nobody").pw_gid
2107
except OSError as error:
2108
if error[0] != errno.EPERM:
2112
# Enable all possible GnuTLS debugging
2114
# "Use a log level over 10 to enable all debugging options."
2116
gnutls.library.functions.gnutls_global_set_log_level(11)
2118
@gnutls.library.types.gnutls_log_func
2119
def debug_gnutls(level, string):
2120
logger.debug("GnuTLS: %s", string[:-1])
2122
(gnutls.library.functions
2123
.gnutls_global_set_log_function(debug_gnutls))
2125
# Redirect stdin so all checkers get /dev/null
2126
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2127
os.dup2(null, sys.stdin.fileno())
2131
# No console logging
2132
logger.removeHandler(console)
2134
# Need to fork before connecting to D-Bus
2136
# Close all input and output, do double fork, etc.
2140
# From the Avahi example code
2141
DBusGMainLoop(set_as_default=True )
2142
main_loop = gobject.MainLoop()
2143
bus = dbus.SystemBus()
2144
# End of Avahi example code
2147
bus_name = dbus.service.BusName("se.recompile.Mandos",
2148
bus, do_not_queue=True)
2149
old_bus_name = (dbus.service.BusName
2150
("se.bsnet.fukt.Mandos", bus,
2152
except dbus.exceptions.NameExistsException as e:
2153
logger.error(unicode(e) + ", disabling D-Bus")
2155
server_settings["use_dbus"] = False
2156
tcp_server.use_dbus = False
2157
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2158
service = AvahiServiceToSyslog(name =
2159
server_settings["servicename"],
2160
servicetype = "_mandos._tcp",
2161
protocol = protocol, bus = bus)
2162
if server_settings["interface"]:
2163
service.interface = (if_nametoindex
2164
(str(server_settings["interface"])))
2166
global multiprocessing_manager
2167
multiprocessing_manager = multiprocessing.Manager()
2169
client_class = Client
2171
client_class = functools.partial(ClientDBusTransitional,
2174
special_settings = {
2175
# Some settings need to be accessd by special methods;
2176
# booleans need .getboolean(), etc. Here is a list of them:
2177
"approved_by_default":
2179
client_config.getboolean(section, "approved_by_default"),
2181
# Construct a new dict of client settings of this form:
2182
# { client_name: {setting_name: value, ...}, ...}
2183
# with exceptions for any special settings as defined above
2184
client_settings = dict((clientname,
2187
if setting not in special_settings
2188
else special_settings[setting]
2190
for setting, value in
2191
client_config.items(clientname)))
2192
for clientname in client_config.sections())
2194
old_client_settings = {}
2197
# Get client data and settings from last running state.
2198
if server_settings["restore"]:
2200
with open(stored_state_path, "rb") as stored_state:
2201
clients_data, old_client_settings = (pickle.load
2203
os.remove(stored_state_path)
2204
except IOError as e:
2205
logger.warning("Could not load persistent state: {0}"
2207
if e.errno != errno.ENOENT:
2210
with Crypto() as crypt:
2211
for client in clients_data:
2212
client_name = client["name"]
2214
# Decide which value to use after restoring saved state.
2215
# We have three different values: Old config file,
2216
# new config file, and saved state.
2217
# New config value takes precedence if it differs from old
2218
# config value, otherwise use saved state.
2219
for name, value in client_settings[client_name].items():
2221
# For each value in new config, check if it
2222
# differs from the old config value (Except for
2223
# the "secret" attribute)
2224
if (name != "secret" and
2225
value != old_client_settings[client_name]
2227
setattr(client, name, value)
2231
# Clients who has passed its expire date can still be
2232
# enabled if its last checker was sucessful. Clients
2233
# whose checker failed before we stored its state is
2234
# assumed to have failed all checkers during downtime.
2235
if client["enabled"] and client["last_checked_ok"]:
2236
if ((datetime.datetime.utcnow()
2237
- client["last_checked_ok"])
2238
> client["interval"]):
2239
if client["last_checker_status"] != 0:
2240
client["enabled"] = False
2242
client["expires"] = (datetime.datetime
2244
+ client["timeout"])
2246
client["changedstate"] = (multiprocessing_manager
2248
(multiprocessing_manager
2251
new_client = (ClientDBusTransitional.__new__
2252
(ClientDBusTransitional))
2253
tcp_server.clients[client_name] = new_client
2254
new_client.bus = bus
2255
for name, value in client.iteritems():
2256
setattr(new_client, name, value)
2257
client_object_name = unicode(client_name).translate(
2258
{ord("."): ord("_"),
2259
ord("-"): ord("_")})
2260
new_client.dbus_object_path = (dbus.ObjectPath
2262
+ client_object_name))
2263
DBusObjectWithProperties.__init__(new_client,
2268
tcp_server.clients[client_name] = (Client.__new__
2270
for name, value in client.iteritems():
2271
setattr(tcp_server.clients[client_name],
2275
tcp_server.clients[client_name].secret = (
2276
crypt.decrypt(tcp_server.clients[client_name]
2278
client_settings[client_name]
2281
# If decryption fails, we use secret from new settings
2282
tcp_server.clients[client_name].secret = (
2283
client_settings[client_name]["secret"])
2285
# Create/remove clients based on new changes made to config
2286
for clientname in set(old_client_settings) - set(client_settings):
2287
del tcp_server.clients[clientname]
2288
for clientname in set(client_settings) - set(old_client_settings):
2289
tcp_server.clients[clientname] = (client_class(name
2295
if not tcp_server.clients:
2296
logger.warning("No clients defined")
2302
pidfile.write(str(pid) + "\n".encode("utf-8"))
2305
logger.error("Could not write to file %r with PID %d",
2308
# "pidfile" was never created
2312
signal.signal(signal.SIGINT, signal.SIG_IGN)
2314
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2315
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2318
class MandosDBusService(dbus.service.Object):
2319
"""A D-Bus proxy object"""
2321
dbus.service.Object.__init__(self, bus, "/")
2322
_interface = "se.recompile.Mandos"
2324
@dbus.service.signal(_interface, signature="o")
2325
def ClientAdded(self, objpath):
2329
@dbus.service.signal(_interface, signature="ss")
2330
def ClientNotFound(self, fingerprint, address):
2334
@dbus.service.signal(_interface, signature="os")
2335
def ClientRemoved(self, objpath, name):
2339
@dbus.service.method(_interface, out_signature="ao")
2340
def GetAllClients(self):
2342
return dbus.Array(c.dbus_object_path
2344
tcp_server.clients.itervalues())
2346
@dbus.service.method(_interface,
2347
out_signature="a{oa{sv}}")
2348
def GetAllClientsWithProperties(self):
2350
return dbus.Dictionary(
2351
((c.dbus_object_path, c.GetAll(""))
2352
for c in tcp_server.clients.itervalues()),
2355
@dbus.service.method(_interface, in_signature="o")
2356
def RemoveClient(self, object_path):
2358
for c in tcp_server.clients.itervalues():
2359
if c.dbus_object_path == object_path:
2360
del tcp_server.clients[c.name]
2361
c.remove_from_connection()
2362
# Don't signal anything except ClientRemoved
2363
c.disable(quiet=True)
2365
self.ClientRemoved(object_path, c.name)
2367
raise KeyError(object_path)
2371
class MandosDBusServiceTransitional(MandosDBusService):
2372
__metaclass__ = AlternateDBusNamesMetaclass
2373
mandos_dbus_service = MandosDBusServiceTransitional()
2376
"Cleanup function; run on exit"
2379
multiprocessing.active_children()
2380
if not (tcp_server.clients or client_settings):
2383
# Store client before exiting. Secrets are encrypted with key
2384
# based on what config file has. If config file is
2385
# removed/edited, old secret will thus be unrecovable.
2387
with Crypto() as crypt:
2388
for client in tcp_server.clients.itervalues():
2389
key = client_settings[client.name]["secret"]
2390
client.encrypted_secret = crypt.encrypt(client.secret,
2394
# A list of attributes that will not be stored when
2396
exclude = set(("bus", "changedstate", "secret"))
2397
for name, typ in (inspect.getmembers
2398
(dbus.service.Object)):
2401
client_dict["encrypted_secret"] = (client
2403
for attr in client.client_structure:
2404
if attr not in exclude:
2405
client_dict[attr] = getattr(client, attr)
2407
clients.append(client_dict)
2408
del client_settings[client.name]["secret"]
2411
with os.fdopen(os.open(stored_state_path,
2412
os.O_CREAT|os.O_WRONLY|os.O_TRUNC,
2413
0600), "wb") as stored_state:
2414
pickle.dump((clients, client_settings), stored_state)
2415
except (IOError, OSError) as e:
2416
logger.warning("Could not save persistent state: {0}"
2418
if e.errno not in (errno.ENOENT, errno.EACCES):
2421
# Delete all clients, and settings from config
2422
while tcp_server.clients:
2423
name, client = tcp_server.clients.popitem()
2425
client.remove_from_connection()
2426
# Don't signal anything except ClientRemoved
2427
client.disable(quiet=True)
2430
mandos_dbus_service.ClientRemoved(client
2433
client_settings.clear()
2435
atexit.register(cleanup)
2437
for client in tcp_server.clients.itervalues():
2440
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2441
# Need to initiate checking of clients
2443
client.init_checker()
2446
tcp_server.server_activate()
2448
# Find out what port we got
2449
service.port = tcp_server.socket.getsockname()[1]
2451
logger.info("Now listening on address %r, port %d,"
2452
" flowinfo %d, scope_id %d"
2453
% tcp_server.socket.getsockname())
2455
logger.info("Now listening on address %r, port %d"
2456
% tcp_server.socket.getsockname())
2458
#service.interface = tcp_server.socket.getsockname()[3]
2461
# From the Avahi example code
2464
except dbus.exceptions.DBusException as error:
2465
logger.critical("DBusException: %s", error)
2468
# End of Avahi example code
2470
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2471
lambda *args, **kwargs:
2472
(tcp_server.handle_request
2473
(*args[2:], **kwargs) or True))
2475
logger.debug("Starting main loop")
2477
except AvahiError as error:
2478
logger.critical("AvahiError: %s", error)
2481
except KeyboardInterrupt:
2483
print("", file=sys.stderr)
2484
logger.debug("Server received KeyboardInterrupt")
2485
logger.debug("Server exiting")
2486
# Must run before the D-Bus bus name gets deregistered
2490
if __name__ == '__main__':
196
# Parse the time arguments
198
options.timeout = string_to_delta(options.timeout)
200
parser.error("option --timeout: Unparseable time")
203
options.interval = string_to_delta(options.interval)
205
parser.error("option --interval: Unparseable time")
207
cert = gnutls.crypto.X509Certificate(open(options.cert).read())
208
key = gnutls.crypto.X509PrivateKey(open(options.key).read())
209
ca = gnutls.crypto.X509Certificate(open(options.ca).read())
210
crl = gnutls.crypto.X509CRL(open(options.crl).read())
211
cred = gnutls.connection.X509Credentials(cert, key, [ca], [crl])
215
client_config_object = ConfigParser.SafeConfigParser(defaults)
216
client_config_object.read("mandos-clients.conf")
217
clients = [Client(name=section, options=options,
218
**(dict(client_config_object.items(section))))
219
for section in client_config_object.sections()]
221
udp_server = IPv6_UDPServer((in6addr_any, options.port),
225
tcp_server = IPv6_TCPServer((in6addr_any, options.port),
232
in_, out, err = select.select((udp_server,
235
server.handle_request()
238
if __name__ == "__main__":