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- Committer: Björn Påhlsson
- Date: 2011-11-11 13:37:05 UTC
- mfrom: (520 trunk)
- mto: (518.2.5 persistent-state-gpgme)
- mto: This revision was merged to the branch mainline in revision 524.
- Revision ID: belorn@fukt.bsnet.se-20111111133705-989sniickt4y3pb7
merge
- files added:
- DBUS-API
- debian/source
- files modified:
- .bzrignore
added
removed
mandos
11
11
# "AvahiService" class, and some lines in "main".
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#
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# Everything else is
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# Copyright © 2008,2009 Teddy Hogeborn
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# Copyright © 2008,2009 Björn Påhlsson
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# Copyright © 2008-2011 Teddy Hogeborn
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# Copyright © 2008-2011 Björn Påhlsson
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#
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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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# along with this program. If not, see
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# <http://www.gnu.org/licenses/>.
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#
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# Contact the authors at <mandos@fukt.bsnet.se>.
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# Contact the authors at <mandos@recompile.se>.
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#
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from __future__ import division, with_statement, absolute_import
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from __future__ import (division, absolute_import, print_function,
35
unicode_literals)
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import SocketServer as socketserver
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import socket
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import optparse
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import argparse
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import datetime
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import errno
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import gnutls.crypto
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import logging
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import logging.handlers
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import pwd
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from contextlib import closing
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import contextlib
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import struct
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import fcntl
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import functools
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import cPickle as pickle
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import multiprocessing
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import types
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import hashlib
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import dbus
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import dbus.service
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import ctypes.util
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import xml.dom.minidom
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import inspect
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import Crypto.Cipher.AES
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try:
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SO_BINDTODEVICE = socket.SO_BINDTODEVICE
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85
SO_BINDTODEVICE = None
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version = "1.0.12"
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logger = logging.Logger(u'mandos')
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version = "1.4.1"
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logger = logging.getLogger()
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stored_state_path = "/var/lib/mandos/clients.pickle"
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syslogger = (logging.handlers.SysLogHandler
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(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
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address = "/dev/log"))
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address = str("/dev/log")))
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syslogger.setFormatter(logging.Formatter
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(u'Mandos [%(process)d]: %(levelname)s:'
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u' %(message)s'))
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('Mandos [%(process)d]: %(levelname)s:'
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' %(message)s'))
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logger.addHandler(syslogger)
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console = logging.StreamHandler()
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console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
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u' %(levelname)s:'
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u' %(message)s'))
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console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
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' [%(process)d]:'
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' %(levelname)s:'
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' %(message)s'))
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logger.addHandler(console)
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class AvahiError(Exception):
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def __init__(self, value, *args, **kwargs):
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self.value = value
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Attributes:
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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: u'Mandos'
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type: string; Example: u'_mandos._tcp'.
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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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"""
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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 = u"", host = u"", max_renames = 32768,
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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.name = name
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self.group = None # our entry group
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self.server = None
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self.bus = bus
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self.entry_group_state_changed_match = None
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def rename(self):
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"""Derived from the Avahi example code"""
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if self.rename_count >= self.max_renames:
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logger.critical(u"No suitable Zeroconf service name found"
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u" after %i retries, exiting.",
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logger.critical("No suitable Zeroconf service name found"
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" after %i retries, exiting.",
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self.rename_count)
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raise AvahiServiceError(u"Too many renames")
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self.name = self.server.GetAlternativeServiceName(self.name)
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logger.info(u"Changing Zeroconf service name to %r ...",
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unicode(self.name))
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syslogger.setFormatter(logging.Formatter
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(u'Mandos (%s) [%%(process)d]:'
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u' %%(levelname)s: %%(message)s'
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% self.name))
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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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self.name)
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self.remove()
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self.add()
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try:
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self.add()
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except dbus.exceptions.DBusException as error:
176
logger.critical("DBusException: %s", error)
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self.cleanup()
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os._exit(1)
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self.rename_count += 1
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def remove(self):
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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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self.group.Reset()
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def add(self):
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"""Derived from the Avahi example code"""
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self.remove()
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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.group.connect_to_signal('StateChanged',
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self
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.entry_group_state_changed)
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logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
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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))
198
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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self.interface,
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self.group.Commit()
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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(u"Avahi state change: %i", state)
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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(u"Zeroconf service 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.warning(u"Zeroconf service name collision.")
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logger.info("Zeroconf service name collision.")
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self.rename()
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elif state == avahi.ENTRY_GROUP_FAILURE:
202
logger.critical(u"Avahi: Error in group state changed %s",
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logger.critical("Avahi: Error in group state changed %s",
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unicode(error))
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raise AvahiGroupError(u"State changed: %s"
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raise AvahiGroupError("State changed: %s"
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% unicode(error))
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def cleanup(self):
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"""Derived from the Avahi example code"""
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if self.group is not None:
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self.group.Free()
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try:
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self.group.Free()
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except (dbus.exceptions.UnknownMethodException,
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dbus.exceptions.DBusException) as e:
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pass
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self.group = None
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def server_state_changed(self, state):
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self.remove()
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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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if state == avahi.SERVER_COLLISION:
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logger.error(u"Zeroconf server name collision")
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self.remove()
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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:
244
if bad_states[state] is not None:
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if error is None:
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logger.error(bad_states[state])
247
else:
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logger.error(bad_states[state] + ": %r", error)
249
self.cleanup()
216
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elif state == avahi.SERVER_RUNNING:
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self.add()
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else:
253
if error is None:
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logger.debug("Unknown state: %r", state)
255
else:
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logger.debug("Unknown state: %r: %r", state, error)
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def activate(self):
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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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avahi.DBUS_PATH_SERVER,
263
follow_name_owner_changes=True),
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264
avahi.DBUS_INTERFACE_SERVER)
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self.server.connect_to_signal(u"StateChanged",
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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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def rename(self):
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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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% self.name))
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return ret
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def _timedelta_to_milliseconds(td):
280
"Convert a datetime.timedelta() to milliseconds"
281
return ((td.days * 24 * 60 * 60 * 1000)
282
+ (td.seconds * 1000)
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+ (td.microseconds // 1000))
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230
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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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Attributes:
234
name: string; from the config file, used in log messages and
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D-Bus identifiers
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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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secret: bytestring; sent verbatim (over TLS) to client
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host: string; available for use by the checker command
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created: datetime.datetime(); (UTC) object creation
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last_enabled: datetime.datetime(); (UTC)
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enabled: bool()
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last_checked_ok: datetime.datetime(); (UTC) or None
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timeout: datetime.timedelta(); How long from last_checked_ok
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until this client is invalid
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interval: datetime.timedelta(); How often to start a new checker
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disable_hook: If set, called by disable() as disable_hook(self)
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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_initiator_tag: a gobject event source tag, or None
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disable_initiator_tag: - '' -
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checker_callback_tag: - '' -
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checker_command: string; External command which is run to check if
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client lives. %() expansions are done at
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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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enabled: bool()
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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
313
last_checker_status: integer between 0 and 255 reflecting exit status
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of last checker. -1 reflect crashed checker,
315
or None.
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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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D-Bus identifiers
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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
321
until this client is disabled
322
extended_timeout: extra long timeout when password has been sent
323
runtime_expansions: Allowed attributes for runtime expansion.
324
expires: datetime.datetime(); time (UTC) when a client will be
325
disabled, or None
259
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"""
260
327
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@staticmethod
262
def _timedelta_to_milliseconds(td):
263
"Convert a datetime.timedelta() to milliseconds"
264
return ((td.days * 24 * 60 * 60 * 1000)
265
+ (td.seconds * 1000)
266
+ (td.microseconds // 1000))
328
runtime_expansions = ("approval_delay", "approval_duration",
329
"created", "enabled", "fingerprint",
330
"host", "interval", "last_checked_ok",
331
"last_enabled", "name", "timeout")
267
332
268
333
def timeout_milliseconds(self):
269
334
"Return the 'timeout' attribute in milliseconds"
270
return self._timedelta_to_milliseconds(self.timeout)
335
return _timedelta_to_milliseconds(self.timeout)
336
337
def extended_timeout_milliseconds(self):
338
"Return the 'extended_timeout' attribute in milliseconds"
339
return _timedelta_to_milliseconds(self.extended_timeout)
271
340
272
341
def interval_milliseconds(self):
273
342
"Return the 'interval' attribute in milliseconds"
274
return self._timedelta_to_milliseconds(self.interval)
275
276
def __init__(self, name = None, disable_hook=None, config=None):
343
return _timedelta_to_milliseconds(self.interval)
344
345
def approval_delay_milliseconds(self):
346
return _timedelta_to_milliseconds(self.approval_delay)
347
348
def __init__(self, name = None, config=None):
277
349
"""Note: the 'checker' key in 'config' sets the
278
350
'checker_command' attribute and *not* the 'checker'
279
351
attribute."""
280
352
self.name = name
281
353
if config is None:
282
354
config = {}
283
logger.debug(u"Creating client %r", self.name)
355
logger.debug("Creating client %r", self.name)
284
356
# Uppercase and remove spaces from fingerprint for later
285
357
# comparison purposes with return value from the fingerprint()
286
358
# function
287
self.fingerprint = (config[u"fingerprint"].upper()
288
.replace(u" ", u""))
289
logger.debug(u" Fingerprint: %s", self.fingerprint)
290
if u"secret" in config:
291
self.secret = config[u"secret"].decode(u"base64")
292
elif u"secfile" in config:
293
with closing(open(os.path.expanduser
294
(os.path.expandvars
295
(config[u"secfile"])),
296
"rb")) as secfile:
359
self.fingerprint = (config["fingerprint"].upper()
360
.replace(" ", ""))
361
logger.debug(" Fingerprint: %s", self.fingerprint)
362
if "secret" in config:
363
self.secret = config["secret"].decode("base64")
364
elif "secfile" in config:
365
with open(os.path.expanduser(os.path.expandvars
366
(config["secfile"])),
367
"rb") as secfile:
297
368
self.secret = secfile.read()
298
369
else:
299
raise TypeError(u"No secret or secfile for client %s"
370
raise TypeError("No secret or secfile for client %s"
300
371
% self.name)
301
self.host = config.get(u"host", u"")
372
self.host = config.get("host", "")
302
373
self.created = datetime.datetime.utcnow()
303
self.enabled = False
304
self.last_enabled = None
374
self.enabled = True
375
self.last_approval_request = None
376
self.last_enabled = datetime.datetime.utcnow()
305
377
self.last_checked_ok = None
306
self.timeout = string_to_delta(config[u"timeout"])
307
self.interval = string_to_delta(config[u"interval"])
308
self.disable_hook = disable_hook
378
self.last_checker_status = None
379
self.timeout = string_to_delta(config["timeout"])
380
self.extended_timeout = string_to_delta(config
381
["extended_timeout"])
382
self.interval = string_to_delta(config["interval"])
309
383
self.checker = None
310
384
self.checker_initiator_tag = None
311
385
self.disable_initiator_tag = None
386
self.expires = datetime.datetime.utcnow() + self.timeout
312
387
self.checker_callback_tag = None
313
self.checker_command = config[u"checker"]
388
self.checker_command = config["checker"]
314
389
self.current_checker_command = None
315
self.last_connect = None
390
self._approved = None
391
self.approved_by_default = config.get("approved_by_default",
392
True)
393
self.approvals_pending = 0
394
self.approval_delay = string_to_delta(
395
config["approval_delay"])
396
self.approval_duration = string_to_delta(
397
config["approval_duration"])
398
self.changedstate = (multiprocessing_manager
399
.Condition(multiprocessing_manager
400
.Lock()))
401
self.client_structure = [attr for attr in self.__dict__.iterkeys() if not attr.startswith("_")]
402
self.client_structure.append("client_structure")
403
404
405
for name, t in inspect.getmembers(type(self),
406
lambda obj: isinstance(obj, property)):
407
if not name.startswith("_"):
408
self.client_structure.append(name)
409
410
# Send notice to process children that client state has changed
411
def send_changedstate(self):
412
with self.changedstate:
413
self.changedstate.notify_all()
316
414
317
415
def enable(self):
318
416
"""Start this client's checker and timeout hooks"""
319
if getattr(self, u"enabled", False):
417
if getattr(self, "enabled", False):
320
418
# Already enabled
321
419
return
420
self.send_changedstate()
421
self.expires = datetime.datetime.utcnow() + self.timeout
422
self.enabled = True
322
423
self.last_enabled = datetime.datetime.utcnow()
424
self.init_checker()
425
426
def disable(self, quiet=True):
427
"""Disable this client."""
428
if not getattr(self, "enabled", False):
429
return False
430
if not quiet:
431
self.send_changedstate()
432
if not quiet:
433
logger.info("Disabling client %s", self.name)
434
if getattr(self, "disable_initiator_tag", False):
435
gobject.source_remove(self.disable_initiator_tag)
436
self.disable_initiator_tag = None
437
self.expires = None
438
if getattr(self, "checker_initiator_tag", False):
439
gobject.source_remove(self.checker_initiator_tag)
440
self.checker_initiator_tag = None
441
self.stop_checker()
442
self.enabled = False
443
# Do not run this again if called by a gobject.timeout_add
444
return False
445
446
def __del__(self):
447
self.disable()
448
449
def init_checker(self):
323
450
# Schedule a new checker to be started an 'interval' from now,
324
451
# and every interval from then on.
325
452
self.checker_initiator_tag = (gobject.timeout_add
326
453
(self.interval_milliseconds(),
327
454
self.start_checker))
328
# Also start a new checker *right now*.
329
self.start_checker()
330
455
# Schedule a disable() when 'timeout' has passed
331
456
self.disable_initiator_tag = (gobject.timeout_add
332
457
(self.timeout_milliseconds(),
333
458
self.disable))
334
self.enabled = True
335
336
def disable(self):
337
"""Disable this client."""
338
if not getattr(self, "enabled", False):
339
return False
340
logger.info(u"Disabling client %s", self.name)
341
if getattr(self, u"disable_initiator_tag", False):
342
gobject.source_remove(self.disable_initiator_tag)
343
self.disable_initiator_tag = None
344
if getattr(self, u"checker_initiator_tag", False):
345
gobject.source_remove(self.checker_initiator_tag)
346
self.checker_initiator_tag = None
347
self.stop_checker()
348
if self.disable_hook:
349
self.disable_hook(self)
350
self.enabled = False
351
# Do not run this again if called by a gobject.timeout_add
352
return False
353
354
def __del__(self):
355
self.disable_hook = None
356
self.disable()
357
459
# Also start a new checker *right now*.
460
self.start_checker()
461
462
358
463
def checker_callback(self, pid, condition, command):
359
464
"""The checker has completed, so take appropriate actions."""
360
465
self.checker_callback_tag = None
361
466
self.checker = None
362
467
if os.WIFEXITED(condition):
363
exitstatus = os.WEXITSTATUS(condition)
364
if exitstatus == 0:
365
logger.info(u"Checker for %(name)s succeeded",
468
self.last_checker_status = os.WEXITSTATUS(condition)
469
if self.last_checker_status == 0:
470
logger.info("Checker for %(name)s succeeded",
366
471
vars(self))
367
472
self.checked_ok()
368
473
else:
369
logger.info(u"Checker for %(name)s failed",
474
logger.info("Checker for %(name)s failed",
370
475
vars(self))
371
476
else:
372
logger.warning(u"Checker for %(name)s crashed?",
477
self.last_checker_status = -1
478
logger.warning("Checker for %(name)s crashed?",
373
479
vars(self))
374
480
375
def checked_ok(self):
481
def checked_ok(self, timeout=None):
376
482
"""Bump up the timeout for this client.
377
483
378
484
This should only be called when the client has been seen,
379
485
alive and well.
380
486
"""
487
if timeout is None:
488
timeout = self.timeout
381
489
self.last_checked_ok = datetime.datetime.utcnow()
382
gobject.source_remove(self.disable_initiator_tag)
383
self.disable_initiator_tag = (gobject.timeout_add
384
(self.timeout_milliseconds(),
385
self.disable))
490
if self.disable_initiator_tag is not None:
491
gobject.source_remove(self.disable_initiator_tag)
492
if getattr(self, "enabled", False):
493
self.disable_initiator_tag = (gobject.timeout_add
494
(_timedelta_to_milliseconds
495
(timeout), self.disable))
496
self.expires = datetime.datetime.utcnow() + timeout
497
498
def need_approval(self):
499
self.last_approval_request = datetime.datetime.utcnow()
386
500
387
501
def start_checker(self):
388
502
"""Start a new checker subprocess if one is not running.
395
509
# client would inevitably timeout, since no checker would get
396
510
# a chance to run to completion. If we instead leave running
397
511
# checkers alone, the checker would have to take more time
398
# than 'timeout' for the client to be declared invalid, which
399
# is as it should be.
512
# than 'timeout' for the client to be disabled, which is as it
513
# should be.
400
514
401
515
# If a checker exists, make sure it is not a zombie
402
516
try:
403
517
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
404
except (AttributeError, OSError), error:
518
except (AttributeError, OSError) as error:
405
519
if (isinstance(error, OSError)
406
520
and error.errno != errno.ECHILD):
407
521
raise error
408
522
else:
409
523
if pid:
410
logger.warning(u"Checker was a zombie")
524
logger.warning("Checker was a zombie")
411
525
gobject.source_remove(self.checker_callback_tag)
412
526
self.checker_callback(pid, status,
413
527
self.current_checker_command)
418
532
command = self.checker_command % self.host
419
533
except TypeError:
420
534
# Escape attributes for the shell
421
escaped_attrs = dict((key,
422
re.escape(unicode(str(val),
423
errors=
424
u'replace')))
425
for key, val in
426
vars(self).iteritems())
535
escaped_attrs = dict(
536
(attr,
537
re.escape(unicode(str(getattr(self, attr, "")),
538
errors=
539
'replace')))
540
for attr in
541
self.runtime_expansions)
542
427
543
try:
428
544
command = self.checker_command % escaped_attrs
429
except TypeError, error:
430
logger.error(u'Could not format string "%s":'
431
u' %s', self.checker_command, error)
545
except TypeError as error:
546
logger.error('Could not format string "%s":'
547
' %s', self.checker_command, error)
432
548
return True # Try again later
433
549
self.current_checker_command = command
434
550
try:
435
logger.info(u"Starting checker %r for %s",
551
logger.info("Starting checker %r for %s",
436
552
command, self.name)
437
553
# We don't need to redirect stdout and stderr, since
438
554
# in normal mode, that is already done by daemon(),
440
556
# always replaced by /dev/null.)
441
557
self.checker = subprocess.Popen(command,
442
558
close_fds=True,
443
shell=True, cwd=u"/")
559
shell=True, cwd="/")
444
560
self.checker_callback_tag = (gobject.child_watch_add
445
561
(self.checker.pid,
446
562
self.checker_callback,
451
567
if pid:
452
568
gobject.source_remove(self.checker_callback_tag)
453
569
self.checker_callback(pid, status, command)
454
except OSError, error:
455
logger.error(u"Failed to start subprocess: %s",
570
except OSError as error:
571
logger.error("Failed to start subprocess: %s",
456
572
error)
457
573
# Re-run this periodically if run by gobject.timeout_add
458
574
return True
462
578
if self.checker_callback_tag:
463
579
gobject.source_remove(self.checker_callback_tag)
464
580
self.checker_callback_tag = None
465
if getattr(self, u"checker", None) is None:
581
if getattr(self, "checker", None) is None:
466
582
return
467
logger.debug(u"Stopping checker for %(name)s", vars(self))
583
logger.debug("Stopping checker for %(name)s", vars(self))
468
584
try:
469
585
os.kill(self.checker.pid, signal.SIGTERM)
470
#os.sleep(0.5)
586
#time.sleep(0.5)
471
587
#if self.checker.poll() is None:
472
588
# os.kill(self.checker.pid, signal.SIGKILL)
473
except OSError, error:
589
except OSError as error:
474
590
if error.errno != errno.ESRCH: # No such process
475
591
raise
476
592
self.checker = None
477
478
def still_valid(self):
479
"""Has the timeout not yet passed for this client?"""
480
if not getattr(self, u"enabled", False):
481
return False
482
now = datetime.datetime.utcnow()
483
if self.last_checked_ok is None:
484
return now < (self.created + self.timeout)
593
594
# Encrypts a client secret and stores it in a varible encrypted_secret
595
def encrypt_secret(self, key):
596
# Encryption-key need to be of a specific size, so we hash inputed key
597
hasheng = hashlib.sha256()
598
hasheng.update(key)
599
encryptionkey = hasheng.digest()
600
601
# Create validation hash so we know at decryption if it was sucessful
602
hasheng = hashlib.sha256()
603
hasheng.update(self.secret)
604
validationhash = hasheng.digest()
605
606
# Encrypt secret
607
iv = os.urandom(Crypto.Cipher.AES.block_size)
608
ciphereng = Crypto.Cipher.AES.new(encryptionkey,
609
Crypto.Cipher.AES.MODE_CFB, iv)
610
ciphertext = ciphereng.encrypt(validationhash+self.secret)
611
self.encrypted_secret = (ciphertext, iv)
612
613
# Decrypt a encrypted client secret
614
def decrypt_secret(self, key):
615
# Decryption-key need to be of a specific size, so we hash inputed key
616
hasheng = hashlib.sha256()
617
hasheng.update(key)
618
encryptionkey = hasheng.digest()
619
620
# Decrypt encrypted secret
621
ciphertext, iv = self.encrypted_secret
622
ciphereng = Crypto.Cipher.AES.new(encryptionkey,
623
Crypto.Cipher.AES.MODE_CFB, iv)
624
plain = ciphereng.decrypt(ciphertext)
625
626
# Validate decrypted secret to know if it was succesful
627
hasheng = hashlib.sha256()
628
validationhash = plain[:hasheng.digest_size]
629
secret = plain[hasheng.digest_size:]
630
hasheng.update(secret)
631
632
# if validation fails, we use key as new secret. Otherwhise, we use
633
# the decrypted secret
634
if hasheng.digest() == validationhash:
635
self.secret = secret
485
636
else:
486
return now < (self.last_checked_ok + self.timeout)
487
488
489
def dbus_service_property(dbus_interface, signature=u"v",
490
access=u"readwrite", byte_arrays=False):
637
self.secret = key
638
del self.encrypted_secret
639
640
641
def dbus_service_property(dbus_interface, signature="v",
642
access="readwrite", byte_arrays=False):
491
643
"""Decorators for marking methods of a DBusObjectWithProperties to
492
644
become properties on the D-Bus.
493
645
498
650
dbus.service.method, except there is only "signature", since the
499
651
type from Get() and the type sent to Set() is the same.
500
652
"""
653
# Encoding deeply encoded byte arrays is not supported yet by the
654
# "Set" method, so we fail early here:
655
if byte_arrays and signature != "ay":
656
raise ValueError("Byte arrays not supported for non-'ay'"
657
" signature %r" % signature)
501
658
def decorator(func):
502
659
func._dbus_is_property = True
503
660
func._dbus_interface = dbus_interface
504
661
func._dbus_signature = signature
505
662
func._dbus_access = access
506
663
func._dbus_name = func.__name__
507
if func._dbus_name.endswith(u"_dbus_property"):
664
if func._dbus_name.endswith("_dbus_property"):
508
665
func._dbus_name = func._dbus_name[:-14]
509
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
666
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
510
667
return func
511
668
return decorator
512
669
532
689
533
690
class DBusObjectWithProperties(dbus.service.Object):
534
691
"""A D-Bus object with properties.
535
692
536
693
Classes inheriting from this can use the dbus_service_property
537
694
decorator to expose methods as D-Bus properties. It exposes the
538
695
standard Get(), Set(), and GetAll() methods on the D-Bus.
540
697
541
698
@staticmethod
542
699
def _is_dbus_property(obj):
543
return getattr(obj, u"_dbus_is_property", False)
700
return getattr(obj, "_dbus_is_property", False)
544
701
545
702
def _get_all_dbus_properties(self):
546
703
"""Returns a generator of (name, attribute) pairs
547
704
"""
548
return ((prop._dbus_name, prop)
705
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
706
for cls in self.__class__.__mro__
549
707
for name, prop in
550
inspect.getmembers(self, self._is_dbus_property))
708
inspect.getmembers(cls, self._is_dbus_property))
551
709
552
710
def _get_dbus_property(self, interface_name, property_name):
553
711
"""Returns a bound method if one exists which is a D-Bus
554
712
property with the specified name and interface.
555
713
"""
556
for name in (property_name,
557
property_name + u"_dbus_property"):
558
prop = getattr(self, name, None)
559
if (prop is None
560
or not self._is_dbus_property(prop)
561
or prop._dbus_name != property_name
562
or (interface_name and prop._dbus_interface
563
and interface_name != prop._dbus_interface)):
564
continue
565
return prop
714
for cls in self.__class__.__mro__:
715
for name, value in (inspect.getmembers
716
(cls, self._is_dbus_property)):
717
if (value._dbus_name == property_name
718
and value._dbus_interface == interface_name):
719
return value.__get__(self)
720
566
721
# No such property
567
raise DBusPropertyNotFound(self.dbus_object_path + u":"
568
+ interface_name + u"."
722
raise DBusPropertyNotFound(self.dbus_object_path + ":"
723
+ interface_name + "."
569
724
+ property_name)
570
725
571
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
572
out_signature=u"v")
726
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
727
out_signature="v")
573
728
def Get(self, interface_name, property_name):
574
729
"""Standard D-Bus property Get() method, see D-Bus standard.
575
730
"""
576
731
prop = self._get_dbus_property(interface_name, property_name)
577
if prop._dbus_access == u"write":
732
if prop._dbus_access == "write":
578
733
raise DBusPropertyAccessException(property_name)
579
734
value = prop()
580
if not hasattr(value, u"variant_level"):
735
if not hasattr(value, "variant_level"):
581
736
return value
582
737
return type(value)(value, variant_level=value.variant_level+1)
583
738
584
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
739
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
585
740
def Set(self, interface_name, property_name, value):
586
741
"""Standard D-Bus property Set() method, see D-Bus standard.
587
742
"""
588
743
prop = self._get_dbus_property(interface_name, property_name)
589
if prop._dbus_access == u"read":
744
if prop._dbus_access == "read":
590
745
raise DBusPropertyAccessException(property_name)
591
if prop._dbus_get_args_options[u"byte_arrays"]:
746
if prop._dbus_get_args_options["byte_arrays"]:
747
# The byte_arrays option is not supported yet on
748
# signatures other than "ay".
749
if prop._dbus_signature != "ay":
750
raise ValueError
592
751
value = dbus.ByteArray(''.join(unichr(byte)
593
752
for byte in value))
594
753
prop(value)
595
754
596
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
597
out_signature=u"a{sv}")
755
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
756
out_signature="a{sv}")
598
757
def GetAll(self, interface_name):
599
758
"""Standard D-Bus property GetAll() method, see D-Bus
600
759
standard.
601
760
602
761
Note: Will not include properties with access="write".
603
762
"""
604
763
all = {}
608
767
# Interface non-empty but did not match
609
768
continue
610
769
# Ignore write-only properties
611
if prop._dbus_access == u"write":
770
if prop._dbus_access == "write":
612
771
continue
613
772
value = prop()
614
if not hasattr(value, u"variant_level"):
773
if not hasattr(value, "variant_level"):
615
774
all[name] = value
616
775
continue
617
776
all[name] = type(value)(value, variant_level=
618
777
value.variant_level+1)
619
return dbus.Dictionary(all, signature=u"sv")
778
return dbus.Dictionary(all, signature="sv")
620
779
621
780
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
622
out_signature=u"s",
781
out_signature="s",
623
782
path_keyword='object_path',
624
783
connection_keyword='connection')
625
784
def Introspect(self, object_path, connection):
630
789
try:
631
790
document = xml.dom.minidom.parseString(xmlstring)
632
791
def make_tag(document, name, prop):
633
e = document.createElement(u"property")
634
e.setAttribute(u"name", name)
635
e.setAttribute(u"type", prop._dbus_signature)
636
e.setAttribute(u"access", prop._dbus_access)
792
e = document.createElement("property")
793
e.setAttribute("name", name)
794
e.setAttribute("type", prop._dbus_signature)
795
e.setAttribute("access", prop._dbus_access)
637
796
return e
638
for if_tag in document.getElementsByTagName(u"interface"):
797
for if_tag in document.getElementsByTagName("interface"):
639
798
for tag in (make_tag(document, name, prop)
640
799
for name, prop
641
800
in self._get_all_dbus_properties()
642
801
if prop._dbus_interface
643
== if_tag.getAttribute(u"name")):
802
== if_tag.getAttribute("name")):
644
803
if_tag.appendChild(tag)
645
804
# Add the names to the return values for the
646
805
# "org.freedesktop.DBus.Properties" methods
647
if (if_tag.getAttribute(u"name")
648
== u"org.freedesktop.DBus.Properties"):
649
for cn in if_tag.getElementsByTagName(u"method"):
650
if cn.getAttribute(u"name") == u"Get":
651
for arg in cn.getElementsByTagName(u"arg"):
652
if (arg.getAttribute(u"direction")
653
== u"out"):
654
arg.setAttribute(u"name", u"value")
655
elif cn.getAttribute(u"name") == u"GetAll":
656
for arg in cn.getElementsByTagName(u"arg"):
657
if (arg.getAttribute(u"direction")
658
== u"out"):
659
arg.setAttribute(u"name", u"props")
660
xmlstring = document.toxml(u"utf-8")
806
if (if_tag.getAttribute("name")
807
== "org.freedesktop.DBus.Properties"):
808
for cn in if_tag.getElementsByTagName("method"):
809
if cn.getAttribute("name") == "Get":
810
for arg in cn.getElementsByTagName("arg"):
811
if (arg.getAttribute("direction")
812
== "out"):
813
arg.setAttribute("name", "value")
814
elif cn.getAttribute("name") == "GetAll":
815
for arg in cn.getElementsByTagName("arg"):
816
if (arg.getAttribute("direction")
817
== "out"):
818
arg.setAttribute("name", "props")
819
xmlstring = document.toxml("utf-8")
661
820
document.unlink()
662
821
except (AttributeError, xml.dom.DOMException,
663
xml.parsers.expat.ExpatError), error:
664
logger.error(u"Failed to override Introspection method",
822
xml.parsers.expat.ExpatError) as error:
823
logger.error("Failed to override Introspection method",
665
824
error)
666
825
return xmlstring
667
826
668
827
828
def datetime_to_dbus (dt, variant_level=0):
829
"""Convert a UTC datetime.datetime() to a D-Bus type."""
830
if dt is None:
831
return dbus.String("", variant_level = variant_level)
832
return dbus.String(dt.isoformat(),
833
variant_level=variant_level)
834
835
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
836
.__metaclass__):
837
"""Applied to an empty subclass of a D-Bus object, this metaclass
838
will add additional D-Bus attributes matching a certain pattern.
839
"""
840
def __new__(mcs, name, bases, attr):
841
# Go through all the base classes which could have D-Bus
842
# methods, signals, or properties in them
843
for base in (b for b in bases
844
if issubclass(b, dbus.service.Object)):
845
# Go though all attributes of the base class
846
for attrname, attribute in inspect.getmembers(base):
847
# Ignore non-D-Bus attributes, and D-Bus attributes
848
# with the wrong interface name
849
if (not hasattr(attribute, "_dbus_interface")
850
or not attribute._dbus_interface
851
.startswith("se.recompile.Mandos")):
852
continue
853
# Create an alternate D-Bus interface name based on
854
# the current name
855
alt_interface = (attribute._dbus_interface
856
.replace("se.recompile.Mandos",
857
"se.bsnet.fukt.Mandos"))
858
# Is this a D-Bus signal?
859
if getattr(attribute, "_dbus_is_signal", False):
860
# Extract the original non-method function by
861
# black magic
862
nonmethod_func = (dict(
863
zip(attribute.func_code.co_freevars,
864
attribute.__closure__))["func"]
865
.cell_contents)
866
# Create a new, but exactly alike, function
867
# object, and decorate it to be a new D-Bus signal
868
# with the alternate D-Bus interface name
869
new_function = (dbus.service.signal
870
(alt_interface,
871
attribute._dbus_signature)
872
(types.FunctionType(
873
nonmethod_func.func_code,
874
nonmethod_func.func_globals,
875
nonmethod_func.func_name,
876
nonmethod_func.func_defaults,
877
nonmethod_func.func_closure)))
878
# Define a creator of a function to call both the
879
# old and new functions, so both the old and new
880
# signals gets sent when the function is called
881
def fixscope(func1, func2):
882
"""This function is a scope container to pass
883
func1 and func2 to the "call_both" function
884
outside of its arguments"""
885
def call_both(*args, **kwargs):
886
"""This function will emit two D-Bus
887
signals by calling func1 and func2"""
888
func1(*args, **kwargs)
889
func2(*args, **kwargs)
890
return call_both
891
# Create the "call_both" function and add it to
892
# the class
893
attr[attrname] = fixscope(attribute,
894
new_function)
895
# Is this a D-Bus method?
896
elif getattr(attribute, "_dbus_is_method", False):
897
# Create a new, but exactly alike, function
898
# object. Decorate it to be a new D-Bus method
899
# with the alternate D-Bus interface name. Add it
900
# to the class.
901
attr[attrname] = (dbus.service.method
902
(alt_interface,
903
attribute._dbus_in_signature,
904
attribute._dbus_out_signature)
905
(types.FunctionType
906
(attribute.func_code,
907
attribute.func_globals,
908
attribute.func_name,
909
attribute.func_defaults,
910
attribute.func_closure)))
911
# Is this a D-Bus property?
912
elif getattr(attribute, "_dbus_is_property", False):
913
# Create a new, but exactly alike, function
914
# object, and decorate it to be a new D-Bus
915
# property with the alternate D-Bus interface
916
# name. Add it to the class.
917
attr[attrname] = (dbus_service_property
918
(alt_interface,
919
attribute._dbus_signature,
920
attribute._dbus_access,
921
attribute
922
._dbus_get_args_options
923
["byte_arrays"])
924
(types.FunctionType
925
(attribute.func_code,
926
attribute.func_globals,
927
attribute.func_name,
928
attribute.func_defaults,
929
attribute.func_closure)))
930
return type.__new__(mcs, name, bases, attr)
931
669
932
class ClientDBus(Client, DBusObjectWithProperties):
670
933
"""A Client class using D-Bus
671
934
673
936
dbus_object_path: dbus.ObjectPath
674
937
bus: dbus.SystemBus()
675
938
"""
939
940
runtime_expansions = (Client.runtime_expansions
941
+ ("dbus_object_path",))
942
676
943
# dbus.service.Object doesn't use super(), so we can't either.
677
944
678
945
def __init__(self, bus = None, *args, **kwargs):
679
946
self.bus = bus
680
947
Client.__init__(self, *args, **kwargs)
948
949
self._approvals_pending = 0
681
950
# Only now, when this client is initialized, can it show up on
682
951
# the D-Bus
952
client_object_name = unicode(self.name).translate(
953
{ord("."): ord("_"),
954
ord("-"): ord("_")})
683
955
self.dbus_object_path = (dbus.ObjectPath
684
(u"/clients/"
685
+ self.name.replace(u".", u"_")))
956
("/clients/" + client_object_name))
686
957
DBusObjectWithProperties.__init__(self, self.bus,
687
958
self.dbus_object_path)
688
689
@staticmethod
690
def _datetime_to_dbus(dt, variant_level=0):
691
"""Convert a UTC datetime.datetime() to a D-Bus type."""
692
return dbus.String(dt.isoformat(),
693
variant_level=variant_level)
694
695
def enable(self):
696
oldstate = getattr(self, u"enabled", False)
697
r = Client.enable(self)
698
if oldstate != self.enabled:
699
# Emit D-Bus signals
700
self.PropertyChanged(dbus.String(u"enabled"),
701
dbus.Boolean(True, variant_level=1))
702
self.PropertyChanged(
703
dbus.String(u"last_enabled"),
704
self._datetime_to_dbus(self.last_enabled,
705
variant_level=1))
706
return r
707
708
def disable(self, signal = True):
709
oldstate = getattr(self, u"enabled", False)
710
r = Client.disable(self)
711
if signal and oldstate != self.enabled:
712
# Emit D-Bus signal
713
self.PropertyChanged(dbus.String(u"enabled"),
714
dbus.Boolean(False, variant_level=1))
715
return r
959
960
def notifychangeproperty(transform_func,
961
dbus_name, type_func=lambda x: x,
962
variant_level=1):
963
""" Modify a variable so that it's a property which announces
964
its changes to DBus.
965
966
transform_fun: Function that takes a value and a variant_level
967
and transforms it to a D-Bus type.
968
dbus_name: D-Bus name of the variable
969
type_func: Function that transform the value before sending it
970
to the D-Bus. Default: no transform
971
variant_level: D-Bus variant level. Default: 1
972
"""
973
attrname = "_{0}".format(dbus_name)
974
def setter(self, value):
975
if hasattr(self, "dbus_object_path"):
976
if (not hasattr(self, attrname) or
977
type_func(getattr(self, attrname, None))
978
!= type_func(value)):
979
dbus_value = transform_func(type_func(value),
980
variant_level
981
=variant_level)
982
self.PropertyChanged(dbus.String(dbus_name),
983
dbus_value)
984
setattr(self, attrname, value)
985
986
return property(lambda self: getattr(self, attrname), setter)
987
988
989
expires = notifychangeproperty(datetime_to_dbus, "Expires")
990
approvals_pending = notifychangeproperty(dbus.Boolean,
991
"ApprovalPending",
992
type_func = bool)
993
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
994
last_enabled = notifychangeproperty(datetime_to_dbus,
995
"LastEnabled")
996
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
997
type_func = lambda checker:
998
checker is not None)
999
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1000
"LastCheckedOK")
1001
last_approval_request = notifychangeproperty(
1002
datetime_to_dbus, "LastApprovalRequest")
1003
approved_by_default = notifychangeproperty(dbus.Boolean,
1004
"ApprovedByDefault")
1005
approval_delay = notifychangeproperty(dbus.UInt16,
1006
"ApprovalDelay",
1007
type_func =
1008
_timedelta_to_milliseconds)
1009
approval_duration = notifychangeproperty(
1010
dbus.UInt16, "ApprovalDuration",
1011
type_func = _timedelta_to_milliseconds)
1012
host = notifychangeproperty(dbus.String, "Host")
1013
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
1014
type_func =
1015
_timedelta_to_milliseconds)
1016
extended_timeout = notifychangeproperty(
1017
dbus.UInt16, "ExtendedTimeout",
1018
type_func = _timedelta_to_milliseconds)
1019
interval = notifychangeproperty(dbus.UInt16,
1020
"Interval",
1021
type_func =
1022
_timedelta_to_milliseconds)
1023
checker_command = notifychangeproperty(dbus.String, "Checker")
1024
1025
del notifychangeproperty
716
1026
717
1027
def __del__(self, *args, **kwargs):
718
1028
try:
719
1029
self.remove_from_connection()
720
1030
except LookupError:
721
1031
pass
722
if hasattr(DBusObjectWithProperties, u"__del__"):
1032
if hasattr(DBusObjectWithProperties, "__del__"):
723
1033
DBusObjectWithProperties.__del__(self, *args, **kwargs)
724
1034
Client.__del__(self, *args, **kwargs)
725
1035
727
1037
*args, **kwargs):
728
1038
self.checker_callback_tag = None
729
1039
self.checker = None
730
# Emit D-Bus signal
731
self.PropertyChanged(dbus.String(u"checker_running"),
732
dbus.Boolean(False, variant_level=1))
733
1040
if os.WIFEXITED(condition):
734
1041
exitstatus = os.WEXITSTATUS(condition)
735
1042
# Emit D-Bus signal
745
1052
return Client.checker_callback(self, pid, condition, command,
746
1053
*args, **kwargs)
747
1054
748
def checked_ok(self, *args, **kwargs):
749
r = Client.checked_ok(self, *args, **kwargs)
750
# Emit D-Bus signal
751
self.PropertyChanged(
752
dbus.String(u"last_checked_ok"),
753
(self._datetime_to_dbus(self.last_checked_ok,
754
variant_level=1)))
755
return r
756
757
1055
def start_checker(self, *args, **kwargs):
758
1056
old_checker = self.checker
759
1057
if self.checker is not None:
766
1064
and old_checker_pid != self.checker.pid):
767
1065
# Emit D-Bus signal
768
1066
self.CheckerStarted(self.current_checker_command)
769
self.PropertyChanged(
770
dbus.String(u"checker_running"),
771
dbus.Boolean(True, variant_level=1))
772
return r
773
774
def stop_checker(self, *args, **kwargs):
775
old_checker = getattr(self, u"checker", None)
776
r = Client.stop_checker(self, *args, **kwargs)
777
if (old_checker is not None
778
and getattr(self, u"checker", None) is None):
779
self.PropertyChanged(dbus.String(u"checker_running"),
780
dbus.Boolean(False, variant_level=1))
781
return r
782
783
## D-Bus methods & signals
784
_interface = u"se.bsnet.fukt.Mandos.Client"
785
786
# CheckedOK - method
787
@dbus.service.method(_interface)
788
def CheckedOK(self):
789
return self.checked_ok()
1067
return r
1068
1069
def _reset_approved(self):
1070
self._approved = None
1071
return False
1072
1073
def approve(self, value=True):
1074
self.send_changedstate()
1075
self._approved = value
1076
gobject.timeout_add(_timedelta_to_milliseconds
1077
(self.approval_duration),
1078
self._reset_approved)
1079
1080
1081
## D-Bus methods, signals & properties
1082
_interface = "se.recompile.Mandos.Client"
1083
1084
## Signals
790
1085
791
1086
# CheckerCompleted - signal
792
@dbus.service.signal(_interface, signature=u"nxs")
1087
@dbus.service.signal(_interface, signature="nxs")
793
1088
def CheckerCompleted(self, exitcode, waitstatus, command):
794
1089
"D-Bus signal"
795
1090
pass
796
1091
797
1092
# CheckerStarted - signal
798
@dbus.service.signal(_interface, signature=u"s")
1093
@dbus.service.signal(_interface, signature="s")
799
1094
def CheckerStarted(self, command):
800
1095
"D-Bus signal"
801
1096
pass
802
1097
803
1098
# PropertyChanged - signal
804
@dbus.service.signal(_interface, signature=u"sv")
1099
@dbus.service.signal(_interface, signature="sv")
805
1100
def PropertyChanged(self, property, value):
806
1101
"D-Bus signal"
807
1102
pass
809
1104
# GotSecret - signal
810
1105
@dbus.service.signal(_interface)
811
1106
def GotSecret(self):
812
"D-Bus signal"
1107
"""D-Bus signal
1108
Is sent after a successful transfer of secret from the Mandos
1109
server to mandos-client
1110
"""
813
1111
pass
814
1112
815
1113
# Rejected - signal
816
@dbus.service.signal(_interface)
817
def Rejected(self):
1114
@dbus.service.signal(_interface, signature="s")
1115
def Rejected(self, reason):
818
1116
"D-Bus signal"
819
1117
pass
820
1118
1119
# NeedApproval - signal
1120
@dbus.service.signal(_interface, signature="tb")
1121
def NeedApproval(self, timeout, default):
1122
"D-Bus signal"
1123
return self.need_approval()
1124
1125
## Methods
1126
1127
# Approve - method
1128
@dbus.service.method(_interface, in_signature="b")
1129
def Approve(self, value):
1130
self.approve(value)
1131
1132
# CheckedOK - method
1133
@dbus.service.method(_interface)
1134
def CheckedOK(self):
1135
self.checked_ok()
1136
821
1137
# Enable - method
822
1138
@dbus.service.method(_interface)
823
1139
def Enable(self):
841
1157
def StopChecker(self):
842
1158
self.stop_checker()
843
1159
844
# name - property
845
@dbus_service_property(_interface, signature=u"s", access=u"read")
846
def name_dbus_property(self):
1160
## Properties
1161
1162
# ApprovalPending - property
1163
@dbus_service_property(_interface, signature="b", access="read")
1164
def ApprovalPending_dbus_property(self):
1165
return dbus.Boolean(bool(self.approvals_pending))
1166
1167
# ApprovedByDefault - property
1168
@dbus_service_property(_interface, signature="b",
1169
access="readwrite")
1170
def ApprovedByDefault_dbus_property(self, value=None):
1171
if value is None: # get
1172
return dbus.Boolean(self.approved_by_default)
1173
self.approved_by_default = bool(value)
1174
1175
# ApprovalDelay - property
1176
@dbus_service_property(_interface, signature="t",
1177
access="readwrite")
1178
def ApprovalDelay_dbus_property(self, value=None):
1179
if value is None: # get
1180
return dbus.UInt64(self.approval_delay_milliseconds())
1181
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1182
1183
# ApprovalDuration - property
1184
@dbus_service_property(_interface, signature="t",
1185
access="readwrite")
1186
def ApprovalDuration_dbus_property(self, value=None):
1187
if value is None: # get
1188
return dbus.UInt64(_timedelta_to_milliseconds(
1189
self.approval_duration))
1190
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1191
1192
# Name - property
1193
@dbus_service_property(_interface, signature="s", access="read")
1194
def Name_dbus_property(self):
847
1195
return dbus.String(self.name)
848
1196
849
# fingerprint - property
850
@dbus_service_property(_interface, signature=u"s", access=u"read")
851
def fingerprint_dbus_property(self):
1197
# Fingerprint - property
1198
@dbus_service_property(_interface, signature="s", access="read")
1199
def Fingerprint_dbus_property(self):
852
1200
return dbus.String(self.fingerprint)
853
1201
854
# host - property
855
@dbus_service_property(_interface, signature=u"s",
856
access=u"readwrite")
857
def host_dbus_property(self, value=None):
1202
# Host - property
1203
@dbus_service_property(_interface, signature="s",
1204
access="readwrite")
1205
def Host_dbus_property(self, value=None):
858
1206
if value is None: # get
859
1207
return dbus.String(self.host)
860
1208
self.host = value
861
# Emit D-Bus signal
862
self.PropertyChanged(dbus.String(u"host"),
863
dbus.String(value, variant_level=1))
864
865
# created - property
866
@dbus_service_property(_interface, signature=u"s", access=u"read")
867
def created_dbus_property(self):
868
return dbus.String(self._datetime_to_dbus(self.created))
869
870
# last_enabled - property
871
@dbus_service_property(_interface, signature=u"s", access=u"read")
872
def last_enabled_dbus_property(self):
873
if self.last_enabled is None:
874
return dbus.String(u"")
875
return dbus.String(self._datetime_to_dbus(self.last_enabled))
876
877
# enabled - property
878
@dbus_service_property(_interface, signature=u"b",
879
access=u"readwrite")
880
def enabled_dbus_property(self, value=None):
1209
1210
# Created - property
1211
@dbus_service_property(_interface, signature="s", access="read")
1212
def Created_dbus_property(self):
1213
return dbus.String(datetime_to_dbus(self.created))
1214
1215
# LastEnabled - property
1216
@dbus_service_property(_interface, signature="s", access="read")
1217
def LastEnabled_dbus_property(self):
1218
return datetime_to_dbus(self.last_enabled)
1219
1220
# Enabled - property
1221
@dbus_service_property(_interface, signature="b",
1222
access="readwrite")
1223
def Enabled_dbus_property(self, value=None):
881
1224
if value is None: # get
882
1225
return dbus.Boolean(self.enabled)
883
1226
if value:
885
1228
else:
886
1229
self.disable()
887
1230
888
# last_checked_ok - property
889
@dbus_service_property(_interface, signature=u"s",
890
access=u"readwrite")
891
def last_checked_ok_dbus_property(self, value=None):
1231
# LastCheckedOK - property
1232
@dbus_service_property(_interface, signature="s",
1233
access="readwrite")
1234
def LastCheckedOK_dbus_property(self, value=None):
892
1235
if value is not None:
893
1236
self.checked_ok()
894
1237
return
895
if self.last_checked_ok is None:
896
return dbus.String(u"")
897
return dbus.String(self._datetime_to_dbus(self
898
.last_checked_ok))
899
900
# timeout - property
901
@dbus_service_property(_interface, signature=u"t",
902
access=u"readwrite")
903
def timeout_dbus_property(self, value=None):
1238
return datetime_to_dbus(self.last_checked_ok)
1239
1240
# Expires - property
1241
@dbus_service_property(_interface, signature="s", access="read")
1242
def Expires_dbus_property(self):
1243
return datetime_to_dbus(self.expires)
1244
1245
# LastApprovalRequest - property
1246
@dbus_service_property(_interface, signature="s", access="read")
1247
def LastApprovalRequest_dbus_property(self):
1248
return datetime_to_dbus(self.last_approval_request)
1249
1250
# Timeout - property
1251
@dbus_service_property(_interface, signature="t",
1252
access="readwrite")
1253
def Timeout_dbus_property(self, value=None):
904
1254
if value is None: # get
905
1255
return dbus.UInt64(self.timeout_milliseconds())
906
1256
self.timeout = datetime.timedelta(0, 0, 0, value)
907
# Emit D-Bus signal
908
self.PropertyChanged(dbus.String(u"timeout"),
909
dbus.UInt64(value, variant_level=1))
910
if getattr(self, u"disable_initiator_tag", None) is None:
1257
if getattr(self, "disable_initiator_tag", None) is None:
911
1258
return
912
1259
# Reschedule timeout
913
1260
gobject.source_remove(self.disable_initiator_tag)
914
1261
self.disable_initiator_tag = None
915
time_to_die = (self.
916
_timedelta_to_milliseconds((self
917
.last_checked_ok
918
+ self.timeout)
919
- datetime.datetime
920
.utcnow()))
1262
self.expires = None
1263
time_to_die = _timedelta_to_milliseconds((self
1264
.last_checked_ok
1265
+ self.timeout)
1266
- datetime.datetime
1267
.utcnow())
921
1268
if time_to_die <= 0:
922
1269
# The timeout has passed
923
1270
self.disable()
924
1271
else:
1272
self.expires = (datetime.datetime.utcnow()
1273
+ datetime.timedelta(milliseconds =
1274
time_to_die))
925
1275
self.disable_initiator_tag = (gobject.timeout_add
926
1276
(time_to_die, self.disable))
927
1277
928
# interval - property
929
@dbus_service_property(_interface, signature=u"t",
930
access=u"readwrite")
931
def interval_dbus_property(self, value=None):
1278
# ExtendedTimeout - property
1279
@dbus_service_property(_interface, signature="t",
1280
access="readwrite")
1281
def ExtendedTimeout_dbus_property(self, value=None):
1282
if value is None: # get
1283
return dbus.UInt64(self.extended_timeout_milliseconds())
1284
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1285
1286
# Interval - property
1287
@dbus_service_property(_interface, signature="t",
1288
access="readwrite")
1289
def Interval_dbus_property(self, value=None):
932
1290
if value is None: # get
933
1291
return dbus.UInt64(self.interval_milliseconds())
934
1292
self.interval = datetime.timedelta(0, 0, 0, value)
935
# Emit D-Bus signal
936
self.PropertyChanged(dbus.String(u"interval"),
937
dbus.UInt64(value, variant_level=1))
938
if getattr(self, u"checker_initiator_tag", None) is None:
1293
if getattr(self, "checker_initiator_tag", None) is None:
939
1294
return
940
1295
# Reschedule checker run
941
1296
gobject.source_remove(self.checker_initiator_tag)
942
1297
self.checker_initiator_tag = (gobject.timeout_add
943
1298
(value, self.start_checker))
944
1299
self.start_checker() # Start one now, too
945
946
# checker - property
947
@dbus_service_property(_interface, signature=u"s",
948
access=u"readwrite")
949
def checker_dbus_property(self, value=None):
1300
1301
# Checker - property
1302
@dbus_service_property(_interface, signature="s",
1303
access="readwrite")
1304
def Checker_dbus_property(self, value=None):
950
1305
if value is None: # get
951
1306
return dbus.String(self.checker_command)
952
1307
self.checker_command = value
953
# Emit D-Bus signal
954
self.PropertyChanged(dbus.String(u"checker"),
955
dbus.String(self.checker_command,
956
variant_level=1))
957
1308
958
# checker_running - property
959
@dbus_service_property(_interface, signature=u"b",
960
access=u"readwrite")
961
def checker_running_dbus_property(self, value=None):
1309
# CheckerRunning - property
1310
@dbus_service_property(_interface, signature="b",
1311
access="readwrite")
1312
def CheckerRunning_dbus_property(self, value=None):
962
1313
if value is None: # get
963
1314
return dbus.Boolean(self.checker is not None)
964
1315
if value:
966
1317
else:
967
1318
self.stop_checker()
968
1319
969
# object_path - property
970
@dbus_service_property(_interface, signature=u"o", access=u"read")
971
def object_path_dbus_property(self):
1320
# ObjectPath - property
1321
@dbus_service_property(_interface, signature="o", access="read")
1322
def ObjectPath_dbus_property(self):
972
1323
return self.dbus_object_path # is already a dbus.ObjectPath
973
1324
974
# secret = property
975
@dbus_service_property(_interface, signature=u"ay",
976
access=u"write", byte_arrays=True)
977
def secret_dbus_property(self, value):
1325
# Secret = property
1326
@dbus_service_property(_interface, signature="ay",
1327
access="write", byte_arrays=True)
1328
def Secret_dbus_property(self, value):
978
1329
self.secret = str(value)
979
1330
980
1331
del _interface
981
1332
982
1333
1334
class ProxyClient(object):
1335
def __init__(self, child_pipe, fpr, address):
1336
self._pipe = child_pipe
1337
self._pipe.send(('init', fpr, address))
1338
if not self._pipe.recv():
1339
raise KeyError()
1340
1341
def __getattribute__(self, name):
1342
if(name == '_pipe'):
1343
return super(ProxyClient, self).__getattribute__(name)
1344
self._pipe.send(('getattr', name))
1345
data = self._pipe.recv()
1346
if data[0] == 'data':
1347
return data[1]
1348
if data[0] == 'function':
1349
def func(*args, **kwargs):
1350
self._pipe.send(('funcall', name, args, kwargs))
1351
return self._pipe.recv()[1]
1352
return func
1353
1354
def __setattr__(self, name, value):
1355
if(name == '_pipe'):
1356
return super(ProxyClient, self).__setattr__(name, value)
1357
self._pipe.send(('setattr', name, value))
1358
1359
class ClientDBusTransitional(ClientDBus):
1360
__metaclass__ = AlternateDBusNamesMetaclass
1361
983
1362
class ClientHandler(socketserver.BaseRequestHandler, object):
984
1363
"""A class to handle client connections.
985
1364
987
1366
Note: This will run in its own forked process."""
988
1367
989
1368
def handle(self):
990
logger.info(u"TCP connection from: %s",
991
unicode(self.client_address))
992
logger.debug(u"IPC Pipe FD: %d", self.server.pipe[1])
993
# Open IPC pipe to parent process
994
with closing(os.fdopen(self.server.pipe[1], u"w", 1)) as ipc:
1369
with contextlib.closing(self.server.child_pipe) as child_pipe:
1370
logger.info("TCP connection from: %s",
1371
unicode(self.client_address))
1372
logger.debug("Pipe FD: %d",
1373
self.server.child_pipe.fileno())
1374
995
1375
session = (gnutls.connection
996
1376
.ClientSession(self.request,
997
1377
gnutls.connection
998
1378
.X509Credentials()))
999
1379
1000
line = self.request.makefile().readline()
1001
logger.debug(u"Protocol version: %r", line)
1002
try:
1003
if int(line.strip().split()[0]) > 1:
1004
raise RuntimeError
1005
except (ValueError, IndexError, RuntimeError), error:
1006
logger.error(u"Unknown protocol version: %s", error)
1007
return
1008
1009
1380
# Note: gnutls.connection.X509Credentials is really a
1010
1381
# generic GnuTLS certificate credentials object so long as
1011
1382
# no X.509 keys are added to it. Therefore, we can use it
1012
1383
# here despite using OpenPGP certificates.
1013
1384
1014
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1015
# u"+AES-256-CBC", u"+SHA1",
1016
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1017
# u"+DHE-DSS"))
1385
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1386
# "+AES-256-CBC", "+SHA1",
1387
# "+COMP-NULL", "+CTYPE-OPENPGP",
1388
# "+DHE-DSS"))
1018
1389
# Use a fallback default, since this MUST be set.
1019
1390
priority = self.server.gnutls_priority
1020
1391
if priority is None:
1021
priority = u"NORMAL"
1392
priority = "NORMAL"
1022
1393
(gnutls.library.functions
1023
1394
.gnutls_priority_set_direct(session._c_object,
1024
1395
priority, None))
1025
1396
1397
# Start communication using the Mandos protocol
1398
# Get protocol number
1399
line = self.request.makefile().readline()
1400
logger.debug("Protocol version: %r", line)
1401
try:
1402
if int(line.strip().split()[0]) > 1:
1403
raise RuntimeError
1404
except (ValueError, IndexError, RuntimeError) as error:
1405
logger.error("Unknown protocol version: %s", error)
1406
return
1407
1408
# Start GnuTLS connection
1026
1409
try:
1027
1410
session.handshake()
1028
except gnutls.errors.GNUTLSError, error:
1029
logger.warning(u"Handshake failed: %s", error)
1411
except gnutls.errors.GNUTLSError as error:
1412
logger.warning("Handshake failed: %s", error)
1030
1413
# Do not run session.bye() here: the session is not
1031
1414
# established. Just abandon the request.
1032
1415
return
1033
logger.debug(u"Handshake succeeded")
1416
logger.debug("Handshake succeeded")
1417
1418
approval_required = False
1034
1419
try:
1035
fpr = self.fingerprint(self.peer_certificate(session))
1036
except (TypeError, gnutls.errors.GNUTLSError), error:
1037
logger.warning(u"Bad certificate: %s", error)
1038
session.bye()
1039
return
1040
logger.debug(u"Fingerprint: %s", fpr)
1420
try:
1421
fpr = self.fingerprint(self.peer_certificate
1422
(session))
1423
except (TypeError,
1424
gnutls.errors.GNUTLSError) as error:
1425
logger.warning("Bad certificate: %s", error)
1426
return
1427
logger.debug("Fingerprint: %s", fpr)
1428
1429
try:
1430
client = ProxyClient(child_pipe, fpr,
1431
self.client_address)
1432
except KeyError:
1433
return
1434
1435
if client.approval_delay:
1436
delay = client.approval_delay
1437
client.approvals_pending += 1
1438
approval_required = True
1439
1440
while True:
1441
if not client.enabled:
1442
logger.info("Client %s is disabled",
1443
client.name)
1444
if self.server.use_dbus:
1445
# Emit D-Bus signal
1446
client.Rejected("Disabled")
1447
return
1448
1449
if client._approved or not client.approval_delay:
1450
#We are approved or approval is disabled
1451
break
1452
elif client._approved is None:
1453
logger.info("Client %s needs approval",
1454
client.name)
1455
if self.server.use_dbus:
1456
# Emit D-Bus signal
1457
client.NeedApproval(
1458
client.approval_delay_milliseconds(),
1459
client.approved_by_default)
1460
else:
1461
logger.warning("Client %s was not approved",
1462
client.name)
1463
if self.server.use_dbus:
1464
# Emit D-Bus signal
1465
client.Rejected("Denied")
1466
return
1467
1468
#wait until timeout or approved
1469
time = datetime.datetime.now()
1470
client.changedstate.acquire()
1471
(client.changedstate.wait
1472
(float(client._timedelta_to_milliseconds(delay)
1473
/ 1000)))
1474
client.changedstate.release()
1475
time2 = datetime.datetime.now()
1476
if (time2 - time) >= delay:
1477
if not client.approved_by_default:
1478
logger.warning("Client %s timed out while"
1479
" waiting for approval",
1480
client.name)
1481
if self.server.use_dbus:
1482
# Emit D-Bus signal
1483
client.Rejected("Approval timed out")
1484
return
1485
else:
1486
break
1487
else:
1488
delay -= time2 - time
1489
1490
sent_size = 0
1491
while sent_size < len(client.secret):
1492
try:
1493
sent = session.send(client.secret[sent_size:])
1494
except gnutls.errors.GNUTLSError as error:
1495
logger.warning("gnutls send failed")
1496
return
1497
logger.debug("Sent: %d, remaining: %d",
1498
sent, len(client.secret)
1499
- (sent_size + sent))
1500
sent_size += sent
1501
1502
logger.info("Sending secret to %s", client.name)
1503
# bump the timeout using extended_timeout
1504
client.checked_ok(client.extended_timeout)
1505
if self.server.use_dbus:
1506
# Emit D-Bus signal
1507
client.GotSecret()
1041
1508
1042
for c in self.server.clients:
1043
if c.fingerprint == fpr:
1044
client = c
1045
break
1046
else:
1047
ipc.write(u"NOTFOUND %s %s\n"
1048
% (fpr, unicode(self.client_address)))
1049
session.bye()
1050
return
1051
# Have to check if client.still_valid(), since it is
1052
# possible that the client timed out while establishing
1053
# the GnuTLS session.
1054
if not client.still_valid():
1055
ipc.write(u"INVALID %s\n" % client.name)
1056
session.bye()
1057
return
1058
ipc.write(u"SENDING %s\n" % client.name)
1059
sent_size = 0
1060
while sent_size < len(client.secret):
1061
sent = session.send(client.secret[sent_size:])
1062
logger.debug(u"Sent: %d, remaining: %d",
1063
sent, len(client.secret)
1064
- (sent_size + sent))
1065
sent_size += sent
1066
session.bye()
1509
finally:
1510
if approval_required:
1511
client.approvals_pending -= 1
1512
try:
1513
session.bye()
1514
except gnutls.errors.GNUTLSError as error:
1515
logger.warning("GnuTLS bye failed")
1067
1516
1068
1517
@staticmethod
1069
1518
def peer_certificate(session):
1079
1528
.gnutls_certificate_get_peers
1080
1529
(session._c_object, ctypes.byref(list_size)))
1081
1530
if not bool(cert_list) and list_size.value != 0:
1082
raise gnutls.errors.GNUTLSError(u"error getting peer"
1083
u" certificate")
1531
raise gnutls.errors.GNUTLSError("error getting peer"
1532
" certificate")
1084
1533
if list_size.value == 0:
1085
1534
return None
1086
1535
cert = cert_list[0]
1112
1561
if crtverify.value != 0:
1113
1562
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1114
1563
raise (gnutls.errors.CertificateSecurityError
1115
(u"Verify failed"))
1564
("Verify failed"))
1116
1565
# New buffer for the fingerprint
1117
1566
buf = ctypes.create_string_buffer(20)
1118
1567
buf_len = ctypes.c_size_t()
1125
1574
# Convert the buffer to a Python bytestring
1126
1575
fpr = ctypes.string_at(buf, buf_len.value)
1127
1576
# Convert the bytestring to hexadecimal notation
1128
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1577
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
1129
1578
return hex_fpr
1130
1579
1131
1580
1132
class ForkingMixInWithPipe(socketserver.ForkingMixIn, object):
1133
"""Like socketserver.ForkingMixIn, but also pass a pipe."""
1581
class MultiprocessingMixIn(object):
1582
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1583
def sub_process_main(self, request, address):
1584
try:
1585
self.finish_request(request, address)
1586
except:
1587
self.handle_error(request, address)
1588
self.close_request(request)
1589
1590
def process_request(self, request, address):
1591
"""Start a new process to process the request."""
1592
proc = multiprocessing.Process(target = self.sub_process_main,
1593
args = (request,
1594
address))
1595
proc.start()
1596
return proc
1597
1598
1599
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1600
""" adds a pipe to the MixIn """
1134
1601
def process_request(self, request, client_address):
1135
1602
"""Overrides and wraps the original process_request().
1136
1603
1137
1604
This function creates a new pipe in self.pipe
1138
1605
"""
1139
self.pipe = os.pipe()
1140
super(ForkingMixInWithPipe,
1141
self).process_request(request, client_address)
1142
os.close(self.pipe[1]) # close write end
1143
self.add_pipe(self.pipe[0])
1144
def add_pipe(self, pipe):
1606
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1607
1608
proc = MultiprocessingMixIn.process_request(self, request,
1609
client_address)
1610
self.child_pipe.close()
1611
self.add_pipe(parent_pipe, proc)
1612
1613
def add_pipe(self, parent_pipe, proc):
1145
1614
"""Dummy function; override as necessary"""
1146
os.close(pipe)
1147
1148
1149
class IPv6_TCPServer(ForkingMixInWithPipe,
1615
raise NotImplementedError
1616
1617
1618
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1150
1619
socketserver.TCPServer, object):
1151
1620
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1152
1621
1168
1637
bind to an address or port if they were not specified."""
1169
1638
if self.interface is not None:
1170
1639
if SO_BINDTODEVICE is None:
1171
logger.error(u"SO_BINDTODEVICE does not exist;"
1172
u" cannot bind to interface %s",
1640
logger.error("SO_BINDTODEVICE does not exist;"
1641
" cannot bind to interface %s",
1173
1642
self.interface)
1174
1643
else:
1175
1644
try:
1176
1645
self.socket.setsockopt(socket.SOL_SOCKET,
1177
1646
SO_BINDTODEVICE,
1178
1647
str(self.interface
1179
+ u'\0'))
1180
except socket.error, error:
1648
+ '\0'))
1649
except socket.error as error:
1181
1650
if error[0] == errno.EPERM:
1182
logger.error(u"No permission to"
1183
u" bind to interface %s",
1651
logger.error("No permission to"
1652
" bind to interface %s",
1184
1653
self.interface)
1185
1654
elif error[0] == errno.ENOPROTOOPT:
1186
logger.error(u"SO_BINDTODEVICE not available;"
1187
u" cannot bind to interface %s",
1655
logger.error("SO_BINDTODEVICE not available;"
1656
" cannot bind to interface %s",
1188
1657
self.interface)
1189
1658
else:
1190
1659
raise
1192
1661
if self.server_address[0] or self.server_address[1]:
1193
1662
if not self.server_address[0]:
1194
1663
if self.address_family == socket.AF_INET6:
1195
any_address = u"::" # in6addr_any
1664
any_address = "::" # in6addr_any
1196
1665
else:
1197
1666
any_address = socket.INADDR_ANY
1198
1667
self.server_address = (any_address,
1225
1694
self.enabled = False
1226
1695
self.clients = clients
1227
1696
if self.clients is None:
1228
self.clients = set()
1697
self.clients = {}
1229
1698
self.use_dbus = use_dbus
1230
1699
self.gnutls_priority = gnutls_priority
1231
1700
IPv6_TCPServer.__init__(self, server_address,
1235
1704
def server_activate(self):
1236
1705
if self.enabled:
1237
1706
return socketserver.TCPServer.server_activate(self)
1707
1238
1708
def enable(self):
1239
1709
self.enabled = True
1240
def add_pipe(self, pipe):
1710
1711
def add_pipe(self, parent_pipe, proc):
1241
1712
# Call "handle_ipc" for both data and EOF events
1242
gobject.io_add_watch(pipe, gobject.IO_IN | gobject.IO_HUP,
1243
self.handle_ipc)
1244
def handle_ipc(self, source, condition, file_objects={}):
1713
gobject.io_add_watch(parent_pipe.fileno(),
1714
gobject.IO_IN | gobject.IO_HUP,
1715
functools.partial(self.handle_ipc,
1716
parent_pipe =
1717
parent_pipe,
1718
proc = proc))
1719
1720
def handle_ipc(self, source, condition, parent_pipe=None,
1721
proc = None, client_object=None):
1245
1722
condition_names = {
1246
gobject.IO_IN: u"IN", # There is data to read.
1247
gobject.IO_OUT: u"OUT", # Data can be written (without
1723
gobject.IO_IN: "IN", # There is data to read.
1724
gobject.IO_OUT: "OUT", # Data can be written (without
1248
1725
# blocking).
1249
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1250
gobject.IO_ERR: u"ERR", # Error condition.
1251
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1726
gobject.IO_PRI: "PRI", # There is urgent data to read.
1727
gobject.IO_ERR: "ERR", # Error condition.
1728
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1252
1729
# broken, usually for pipes and
1253
1730
# sockets).
1254
1731
}
1256
1733
for cond, name in
1257
1734
condition_names.iteritems()
1258
1735
if cond & condition)
1259
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1260
conditions_string)
1261
1262
# Turn the pipe file descriptor into a Python file object
1263
if source not in file_objects:
1264
file_objects[source] = os.fdopen(source, u"r", 1)
1265
1266
# Read a line from the file object
1267
cmdline = file_objects[source].readline()
1268
if not cmdline: # Empty line means end of file
1269
# close the IPC pipe
1270
file_objects[source].close()
1271
del file_objects[source]
1272
1273
# Stop calling this function
1274
return False
1275
1276
logger.debug(u"IPC command: %r", cmdline)
1277
1278
# Parse and act on command
1279
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1280
1281
if cmd == u"NOTFOUND":
1282
logger.warning(u"Client not found for fingerprint: %s",
1283
args)
1284
if self.use_dbus:
1285
# Emit D-Bus signal
1286
mandos_dbus_service.ClientNotFound(args)
1287
elif cmd == u"INVALID":
1288
for client in self.clients:
1289
if client.name == args:
1290
logger.warning(u"Client %s is invalid", args)
1291
if self.use_dbus:
1292
# Emit D-Bus signal
1293
client.Rejected()
1294
break
1295
else:
1296
logger.error(u"Unknown client %s is invalid", args)
1297
elif cmd == u"SENDING":
1298
for client in self.clients:
1299
if client.name == args:
1300
logger.info(u"Sending secret to %s", client.name)
1301
client.checked_ok()
1302
if self.use_dbus:
1303
# Emit D-Bus signal
1304
client.GotSecret()
1305
break
1306
else:
1307
logger.error(u"Sending secret to unknown client %s",
1308
args)
1309
else:
1310
logger.error(u"Unknown IPC command: %r", cmdline)
1311
1312
# Keep calling this function
1736
# error, or the other end of multiprocessing.Pipe has closed
1737
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
1738
# Wait for other process to exit
1739
proc.join()
1740
return False
1741
1742
# Read a request from the child
1743
request = parent_pipe.recv()
1744
command = request[0]
1745
1746
if command == 'init':
1747
fpr = request[1]
1748
address = request[2]
1749
1750
for c in self.clients.itervalues():
1751
if c.fingerprint == fpr:
1752
client = c
1753
break
1754
else:
1755
logger.info("Client not found for fingerprint: %s, ad"
1756
"dress: %s", fpr, address)
1757
if self.use_dbus:
1758
# Emit D-Bus signal
1759
mandos_dbus_service.ClientNotFound(fpr,
1760
address[0])
1761
parent_pipe.send(False)
1762
return False
1763
1764
gobject.io_add_watch(parent_pipe.fileno(),
1765
gobject.IO_IN | gobject.IO_HUP,
1766
functools.partial(self.handle_ipc,
1767
parent_pipe =
1768
parent_pipe,
1769
proc = proc,
1770
client_object =
1771
client))
1772
parent_pipe.send(True)
1773
# remove the old hook in favor of the new above hook on
1774
# same fileno
1775
return False
1776
if command == 'funcall':
1777
funcname = request[1]
1778
args = request[2]
1779
kwargs = request[3]
1780
1781
parent_pipe.send(('data', getattr(client_object,
1782
funcname)(*args,
1783
**kwargs)))
1784
1785
if command == 'getattr':
1786
attrname = request[1]
1787
if callable(client_object.__getattribute__(attrname)):
1788
parent_pipe.send(('function',))
1789
else:
1790
parent_pipe.send(('data', client_object
1791
.__getattribute__(attrname)))
1792
1793
if command == 'setattr':
1794
attrname = request[1]
1795
value = request[2]
1796
setattr(client_object, attrname, value)
1797
1313
1798
return True
1314
1799
1315
1800
1316
1801
def string_to_delta(interval):
1317
1802
"""Parse a string and return a datetime.timedelta
1318
1803
1319
>>> string_to_delta(u'7d')
1804
>>> string_to_delta('7d')
1320
1805
datetime.timedelta(7)
1321
>>> string_to_delta(u'60s')
1806
>>> string_to_delta('60s')
1322
1807
datetime.timedelta(0, 60)
1323
>>> string_to_delta(u'60m')
1808
>>> string_to_delta('60m')
1324
1809
datetime.timedelta(0, 3600)
1325
>>> string_to_delta(u'24h')
1810
>>> string_to_delta('24h')
1326
1811
datetime.timedelta(1)
1327
>>> string_to_delta(u'1w')
1812
>>> string_to_delta('1w')
1328
1813
datetime.timedelta(7)
1329
>>> string_to_delta(u'5m 30s')
1814
>>> string_to_delta('5m 30s')
1330
1815
datetime.timedelta(0, 330)
1331
1816
"""
1332
1817
timevalue = datetime.timedelta(0)
1334
1819
try:
1335
1820
suffix = unicode(s[-1])
1336
1821
value = int(s[:-1])
1337
if suffix == u"d":
1822
if suffix == "d":
1338
1823
delta = datetime.timedelta(value)
1339
elif suffix == u"s":
1824
elif suffix == "s":
1340
1825
delta = datetime.timedelta(0, value)
1341
elif suffix == u"m":
1826
elif suffix == "m":
1342
1827
delta = datetime.timedelta(0, 0, 0, 0, value)
1343
elif suffix == u"h":
1828
elif suffix == "h":
1344
1829
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1345
elif suffix == u"w":
1830
elif suffix == "w":
1346
1831
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1347
1832
else:
1348
raise ValueError
1349
except (ValueError, IndexError):
1350
raise ValueError
1833
raise ValueError("Unknown suffix %r" % suffix)
1834
except (ValueError, IndexError) as e:
1835
raise ValueError(*(e.args))
1351
1836
timevalue += delta
1352
1837
return timevalue
1353
1838
1359
1844
global if_nametoindex
1360
1845
try:
1361
1846
if_nametoindex = (ctypes.cdll.LoadLibrary
1362
(ctypes.util.find_library(u"c"))
1847
(ctypes.util.find_library("c"))
1363
1848
.if_nametoindex)
1364
1849
except (OSError, AttributeError):
1365
logger.warning(u"Doing if_nametoindex the hard way")
1850
logger.warning("Doing if_nametoindex the hard way")
1366
1851
def if_nametoindex(interface):
1367
1852
"Get an interface index the hard way, i.e. using fcntl()"
1368
1853
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1369
with closing(socket.socket()) as s:
1854
with contextlib.closing(socket.socket()) as s:
1370
1855
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1371
struct.pack(str(u"16s16x"),
1856
struct.pack(str("16s16x"),
1372
1857
interface))
1373
interface_index = struct.unpack(str(u"I"),
1858
interface_index = struct.unpack(str("I"),
1374
1859
ifreq[16:20])[0]
1375
1860
return interface_index
1376
1861
return if_nametoindex(interface)
1384
1869
sys.exit()
1385
1870
os.setsid()
1386
1871
if not nochdir:
1387
os.chdir(u"/")
1872
os.chdir("/")
1388
1873
if os.fork():
1389
1874
sys.exit()
1390
1875
if not noclose:
1392
1877
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1393
1878
if not stat.S_ISCHR(os.fstat(null).st_mode):
1394
1879
raise OSError(errno.ENODEV,
1395
u"%s not a character device"
1880
"%s not a character device"
1396
1881
% os.path.devnull)
1397
1882
os.dup2(null, sys.stdin.fileno())
1398
1883
os.dup2(null, sys.stdout.fileno())
1406
1891
##################################################################
1407
1892
# Parsing of options, both command line and config file
1408
1893
1409
parser = optparse.OptionParser(version = "%%prog %s" % version)
1410
parser.add_option("-i", u"--interface", type=u"string",
1411
metavar="IF", help=u"Bind to interface IF")
1412
parser.add_option("-a", u"--address", type=u"string",
1413
help=u"Address to listen for requests on")
1414
parser.add_option("-p", u"--port", type=u"int",
1415
help=u"Port number to receive requests on")
1416
parser.add_option("--check", action=u"store_true",
1417
help=u"Run self-test")
1418
parser.add_option("--debug", action=u"store_true",
1419
help=u"Debug mode; run in foreground and log to"
1420
u" terminal")
1421
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1422
u" priority string (see GnuTLS documentation)")
1423
parser.add_option("--servicename", type=u"string",
1424
metavar=u"NAME", help=u"Zeroconf service name")
1425
parser.add_option("--configdir", type=u"string",
1426
default=u"/etc/mandos", metavar=u"DIR",
1427
help=u"Directory to search for configuration"
1428
u" files")
1429
parser.add_option("--no-dbus", action=u"store_false",
1430
dest=u"use_dbus", help=u"Do not provide D-Bus"
1431
u" system bus interface")
1432
parser.add_option("--no-ipv6", action=u"store_false",
1433
dest=u"use_ipv6", help=u"Do not use IPv6")
1434
options = parser.parse_args()[0]
1894
parser = argparse.ArgumentParser()
1895
parser.add_argument("-v", "--version", action="version",
1896
version = "%%(prog)s %s" % version,
1897
help="show version number and exit")
1898
parser.add_argument("-i", "--interface", metavar="IF",
1899
help="Bind to interface IF")
1900
parser.add_argument("-a", "--address",
1901
help="Address to listen for requests on")
1902
parser.add_argument("-p", "--port", type=int,
1903
help="Port number to receive requests on")
1904
parser.add_argument("--check", action="store_true",
1905
help="Run self-test")
1906
parser.add_argument("--debug", action="store_true",
1907
help="Debug mode; run in foreground and log"
1908
" to terminal")
1909
parser.add_argument("--debuglevel", metavar="LEVEL",
1910
help="Debug level for stdout output")
1911
parser.add_argument("--priority", help="GnuTLS"
1912
" priority string (see GnuTLS documentation)")
1913
parser.add_argument("--servicename",
1914
metavar="NAME", help="Zeroconf service name")
1915
parser.add_argument("--configdir",
1916
default="/etc/mandos", metavar="DIR",
1917
help="Directory to search for configuration"
1918
" files")
1919
parser.add_argument("--no-dbus", action="store_false",
1920
dest="use_dbus", help="Do not provide D-Bus"
1921
" system bus interface")
1922
parser.add_argument("--no-ipv6", action="store_false",
1923
dest="use_ipv6", help="Do not use IPv6")
1924
parser.add_argument("--no-restore", action="store_false",
1925
dest="restore", help="Do not restore stored state",
1926
default=True)
1927
1928
options = parser.parse_args()
1435
1929
1436
1930
if options.check:
1437
1931
import doctest
1439
1933
sys.exit()
1440
1934
1441
1935
# Default values for config file for server-global settings
1442
server_defaults = { u"interface": u"",
1443
u"address": u"",
1444
u"port": u"",
1445
u"debug": u"False",
1446
u"priority":
1447
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1448
u"servicename": u"Mandos",
1449
u"use_dbus": u"True",
1450
u"use_ipv6": u"True",
1936
server_defaults = { "interface": "",
1937
"address": "",
1938
"port": "",
1939
"debug": "False",
1940
"priority":
1941
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1942
"servicename": "Mandos",
1943
"use_dbus": "True",
1944
"use_ipv6": "True",
1945
"debuglevel": "",
1451
1946
}
1452
1947
1453
1948
# Parse config file for server-global settings
1454
1949
server_config = configparser.SafeConfigParser(server_defaults)
1455
1950
del server_defaults
1456
1951
server_config.read(os.path.join(options.configdir,
1457
u"mandos.conf"))
1952
"mandos.conf"))
1458
1953
# Convert the SafeConfigParser object to a dict
1459
1954
server_settings = server_config.defaults()
1460
1955
# Use the appropriate methods on the non-string config options
1461
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1462
server_settings[option] = server_config.getboolean(u"DEFAULT",
1956
for option in ("debug", "use_dbus", "use_ipv6"):
1957
server_settings[option] = server_config.getboolean("DEFAULT",
1463
1958
option)
1464
1959
if server_settings["port"]:
1465
server_settings["port"] = server_config.getint(u"DEFAULT",
1466
u"port")
1960
server_settings["port"] = server_config.getint("DEFAULT",
1961
"port")
1467
1962
del server_config
1468
1963
1469
1964
# Override the settings from the config file with command line
1470
1965
# options, if set.
1471
for option in (u"interface", u"address", u"port", u"debug",
1472
u"priority", u"servicename", u"configdir",
1473
u"use_dbus", u"use_ipv6"):
1966
for option in ("interface", "address", "port", "debug",
1967
"priority", "servicename", "configdir",
1968
"use_dbus", "use_ipv6", "debuglevel", "restore"):
1474
1969
value = getattr(options, option)
1475
1970
if value is not None:
1476
1971
server_settings[option] = value
1484
1979
##################################################################
1485
1980
1486
1981
# For convenience
1487
debug = server_settings[u"debug"]
1488
use_dbus = server_settings[u"use_dbus"]
1489
use_ipv6 = server_settings[u"use_ipv6"]
1490
1491
if not debug:
1492
syslogger.setLevel(logging.WARNING)
1493
console.setLevel(logging.WARNING)
1494
1495
if server_settings[u"servicename"] != u"Mandos":
1982
debug = server_settings["debug"]
1983
debuglevel = server_settings["debuglevel"]
1984
use_dbus = server_settings["use_dbus"]
1985
use_ipv6 = server_settings["use_ipv6"]
1986
1987
if server_settings["servicename"] != "Mandos":
1496
1988
syslogger.setFormatter(logging.Formatter
1497
(u'Mandos (%s) [%%(process)d]:'
1498
u' %%(levelname)s: %%(message)s'
1499
% server_settings[u"servicename"]))
1989
('Mandos (%s) [%%(process)d]:'
1990
' %%(levelname)s: %%(message)s'
1991
% server_settings["servicename"]))
1500
1992
1501
1993
# Parse config file with clients
1502
client_defaults = { u"timeout": u"1h",
1503
u"interval": u"5m",
1504
u"checker": u"fping -q -- %%(host)s",
1505
u"host": u"",
1994
client_defaults = { "timeout": "5m",
1995
"extended_timeout": "15m",
1996
"interval": "2m",
1997
"checker": "fping -q -- %%(host)s",
1998
"host": "",
1999
"approval_delay": "0s",
2000
"approval_duration": "1s",
1506
2001
}
1507
2002
client_config = configparser.SafeConfigParser(client_defaults)
1508
client_config.read(os.path.join(server_settings[u"configdir"],
1509
u"clients.conf"))
2003
client_config.read(os.path.join(server_settings["configdir"],
2004
"clients.conf"))
1510
2005
1511
2006
global mandos_dbus_service
1512
2007
mandos_dbus_service = None
1513
2008
1514
tcp_server = MandosServer((server_settings[u"address"],
1515
server_settings[u"port"]),
2009
tcp_server = MandosServer((server_settings["address"],
2010
server_settings["port"]),
1516
2011
ClientHandler,
1517
interface=server_settings[u"interface"],
2012
interface=(server_settings["interface"]
2013
or None),
1518
2014
use_ipv6=use_ipv6,
1519
2015
gnutls_priority=
1520
server_settings[u"priority"],
2016
server_settings["priority"],
1521
2017
use_dbus=use_dbus)
1522
pidfilename = u"/var/run/mandos.pid"
1523
try:
1524
pidfile = open(pidfilename, u"w")
1525
except IOError:
1526
logger.error(u"Could not open file %r", pidfilename)
2018
if not debug:
2019
pidfilename = "/var/run/mandos.pid"
2020
try:
2021
pidfile = open(pidfilename, "w")
2022
except IOError:
2023
logger.error("Could not open file %r", pidfilename)
1527
2024
1528
2025
try:
1529
uid = pwd.getpwnam(u"_mandos").pw_uid
1530
gid = pwd.getpwnam(u"_mandos").pw_gid
2026
uid = pwd.getpwnam("_mandos").pw_uid
2027
gid = pwd.getpwnam("_mandos").pw_gid
1531
2028
except KeyError:
1532
2029
try:
1533
uid = pwd.getpwnam(u"mandos").pw_uid
1534
gid = pwd.getpwnam(u"mandos").pw_gid
2030
uid = pwd.getpwnam("mandos").pw_uid
2031
gid = pwd.getpwnam("mandos").pw_gid
1535
2032
except KeyError:
1536
2033
try:
1537
uid = pwd.getpwnam(u"nobody").pw_uid
1538
gid = pwd.getpwnam(u"nobody").pw_gid
2034
uid = pwd.getpwnam("nobody").pw_uid
2035
gid = pwd.getpwnam("nobody").pw_gid
1539
2036
except KeyError:
1540
2037
uid = 65534
1541
2038
gid = 65534
1542
2039
try:
1543
2040
os.setgid(gid)
1544
2041
os.setuid(uid)
1545
except OSError, error:
2042
except OSError as error:
1546
2043
if error[0] != errno.EPERM:
1547
2044
raise error
1548
2045
1549
# Enable all possible GnuTLS debugging
2046
if not debug and not debuglevel:
2047
logger.setLevel(logging.WARNING)
2048
if debuglevel:
2049
level = getattr(logging, debuglevel.upper())
2050
logger.setLevel(level)
2051
1550
2052
if debug:
2053
logger.setLevel(logging.DEBUG)
2054
# Enable all possible GnuTLS debugging
2055
1551
2056
# "Use a log level over 10 to enable all debugging options."
1552
2057
# - GnuTLS manual
1553
2058
gnutls.library.functions.gnutls_global_set_log_level(11)
1554
2059
1555
2060
@gnutls.library.types.gnutls_log_func
1556
2061
def debug_gnutls(level, string):
1557
logger.debug(u"GnuTLS: %s", string[:-1])
2062
logger.debug("GnuTLS: %s", string[:-1])
1558
2063
1559
2064
(gnutls.library.functions
1560
2065
.gnutls_global_set_log_function(debug_gnutls))
2066
2067
# Redirect stdin so all checkers get /dev/null
2068
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2069
os.dup2(null, sys.stdin.fileno())
2070
if null > 2:
2071
os.close(null)
2072
else:
2073
# No console logging
2074
logger.removeHandler(console)
2075
2076
# Need to fork before connecting to D-Bus
2077
if not debug:
2078
# Close all input and output, do double fork, etc.
2079
daemon()
1561
2080
1562
2081
global main_loop
1563
2082
# From the Avahi example code
1566
2085
bus = dbus.SystemBus()
1567
2086
# End of Avahi example code
1568
2087
if use_dbus:
1569
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos", bus)
2088
try:
2089
bus_name = dbus.service.BusName("se.recompile.Mandos",
2090
bus, do_not_queue=True)
2091
old_bus_name = (dbus.service.BusName
2092
("se.bsnet.fukt.Mandos", bus,
2093
do_not_queue=True))
2094
except dbus.exceptions.NameExistsException as e:
2095
logger.error(unicode(e) + ", disabling D-Bus")
2096
use_dbus = False
2097
server_settings["use_dbus"] = False
2098
tcp_server.use_dbus = False
1570
2099
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1571
service = AvahiService(name = server_settings[u"servicename"],
1572
servicetype = u"_mandos._tcp",
1573
protocol = protocol, bus = bus)
2100
service = AvahiServiceToSyslog(name =
2101
server_settings["servicename"],
2102
servicetype = "_mandos._tcp",
2103
protocol = protocol, bus = bus)
1574
2104
if server_settings["interface"]:
1575
2105
service.interface = (if_nametoindex
1576
(str(server_settings[u"interface"])))
2106
(str(server_settings["interface"])))
2107
2108
global multiprocessing_manager
2109
multiprocessing_manager = multiprocessing.Manager()
1577
2110
1578
2111
client_class = Client
1579
2112
if use_dbus:
1580
client_class = functools.partial(ClientDBus, bus = bus)
1581
tcp_server.clients.update(set(
1582
client_class(name = section,
1583
config= dict(client_config.items(section)))
1584
for section in client_config.sections()))
2113
client_class = functools.partial(ClientDBusTransitional,
2114
bus = bus)
2115
2116
special_settings = {
2117
# Some settings need to be accessd by special methods;
2118
# booleans need .getboolean(), etc. Here is a list of them:
2119
"approved_by_default":
2120
lambda section:
2121
client_config.getboolean(section, "approved_by_default"),
2122
}
2123
# Construct a new dict of client settings of this form:
2124
# { client_name: {setting_name: value, ...}, ...}
2125
# with exceptions for any special settings as defined above
2126
client_settings = dict((clientname,
2127
dict((setting,
2128
(value if setting not in special_settings
2129
else special_settings[setting](clientname)))
2130
for setting, value in client_config.items(clientname)))
2131
for clientname in client_config.sections())
2132
2133
old_client_settings = {}
2134
clients_data = []
2135
2136
# Get client data and settings from last running state.
2137
if server_settings["restore"]:
2138
try:
2139
with open(stored_state_path, "rb") as stored_state:
2140
clients_data, old_client_settings = pickle.load(stored_state)
2141
os.remove(stored_state_path)
2142
except IOError as e:
2143
logger.warning("Could not load persistant state: {0}".format(e))
2144
if e.errno != errno.ENOENT:
2145
raise
2146
2147
for client in clients_data:
2148
client_name = client["name"]
2149
2150
# Decide which value to use after restoring saved state.
2151
# We have three different values: Old config file,
2152
# new config file, and saved state.
2153
# New config value takes precedence if it differs from old
2154
# config value, otherwise use saved state.
2155
for name, value in client_settings[client_name].items():
2156
try:
2157
# For each value in new config, check if it differs
2158
# from the old config value (Except for the "secret"
2159
# attribute)
2160
if name != "secret" and value != old_client_settings[client_name][name]:
2161
setattr(client, name, value)
2162
except KeyError:
2163
pass
2164
2165
# Clients who has passed its expire date, can still be enabled if its
2166
# last checker was sucessful. Clients who checkers failed before we
2167
# stored it state is asumed to had failed checker during downtime.
2168
if client["enabled"] and client["last_checked_ok"]:
2169
if ((datetime.datetime.utcnow() - client["last_checked_ok"])
2170
> client["interval"]):
2171
if client["last_checker_status"] != 0:
2172
client["enabled"] = False
2173
else:
2174
client["expires"] = datetime.datetime.utcnow() + client["timeout"]
2175
2176
client["changedstate"] = (multiprocessing_manager
2177
.Condition(multiprocessing_manager
2178
.Lock()))
2179
if use_dbus:
2180
new_client = ClientDBusTransitional.__new__(ClientDBusTransitional)
2181
tcp_server.clients[client_name] = new_client
2182
new_client.bus = bus
2183
for name, value in client.iteritems():
2184
setattr(new_client, name, value)
2185
client_object_name = unicode(client_name).translate(
2186
{ord("."): ord("_"),
2187
ord("-"): ord("_")})
2188
new_client.dbus_object_path = (dbus.ObjectPath
2189
("/clients/" + client_object_name))
2190
DBusObjectWithProperties.__init__(new_client,
2191
new_client.bus,
2192
new_client.dbus_object_path)
2193
else:
2194
tcp_server.clients[client_name] = Client.__new__(Client)
2195
for name, value in client.iteritems():
2196
setattr(tcp_server.clients[client_name], name, value)
2197
2198
tcp_server.clients[client_name].decrypt_secret(
2199
client_settings[client_name]["secret"])
2200
2201
# Create/remove clients based on new changes made to config
2202
for clientname in set(old_client_settings) - set(client_settings):
2203
del tcp_server.clients[clientname]
2204
for clientname in set(client_settings) - set(old_client_settings):
2205
tcp_server.clients[clientname] = (client_class(name = clientname,
2206
config =
2207
client_settings
2208
[clientname]))
2209
2210
1585
2211
if not tcp_server.clients:
1586
logger.warning(u"No clients defined")
1587
1588
if debug:
1589
# Redirect stdin so all checkers get /dev/null
1590
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1591
os.dup2(null, sys.stdin.fileno())
1592
if null > 2:
1593
os.close(null)
1594
else:
1595
# No console logging
1596
logger.removeHandler(console)
1597
# Close all input and output, do double fork, etc.
1598
daemon()
1599
1600
try:
1601
with closing(pidfile):
1602
pid = os.getpid()
1603
pidfile.write(str(pid) + "\n")
1604
del pidfile
1605
except IOError:
1606
logger.error(u"Could not write to file %r with PID %d",
1607
pidfilename, pid)
1608
except NameError:
1609
# "pidfile" was never created
1610
pass
1611
del pidfilename
1612
1613
def cleanup():
1614
"Cleanup function; run on exit"
1615
service.cleanup()
2212
logger.warning("No clients defined")
1616
2213
1617
while tcp_server.clients:
1618
client = tcp_server.clients.pop()
1619
client.disable_hook = None
1620
client.disable()
1621
1622
atexit.register(cleanup)
1623
1624
2214
if not debug:
2215
try:
2216
with pidfile:
2217
pid = os.getpid()
2218
pidfile.write(str(pid) + "\n".encode("utf-8"))
2219
del pidfile
2220
except IOError:
2221
logger.error("Could not write to file %r with PID %d",
2222
pidfilename, pid)
2223
except NameError:
2224
# "pidfile" was never created
2225
pass
2226
del pidfilename
2227
1625
2228
signal.signal(signal.SIGINT, signal.SIG_IGN)
2229
1626
2230
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1627
2231
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1628
2232
1630
2234
class MandosDBusService(dbus.service.Object):
1631
2235
"""A D-Bus proxy object"""
1632
2236
def __init__(self):
1633
dbus.service.Object.__init__(self, bus, u"/")
1634
_interface = u"se.bsnet.fukt.Mandos"
1635
1636
@dbus.service.signal(_interface, signature=u"oa{sv}")
1637
def ClientAdded(self, objpath, properties):
1638
"D-Bus signal"
1639
pass
1640
1641
@dbus.service.signal(_interface, signature=u"s")
1642
def ClientNotFound(self, fingerprint):
1643
"D-Bus signal"
1644
pass
1645
1646
@dbus.service.signal(_interface, signature=u"os")
2237
dbus.service.Object.__init__(self, bus, "/")
2238
_interface = "se.recompile.Mandos"
2239
2240
@dbus.service.signal(_interface, signature="o")
2241
def ClientAdded(self, objpath):
2242
"D-Bus signal"
2243
pass
2244
2245
@dbus.service.signal(_interface, signature="ss")
2246
def ClientNotFound(self, fingerprint, address):
2247
"D-Bus signal"
2248
pass
2249
2250
@dbus.service.signal(_interface, signature="os")
1647
2251
def ClientRemoved(self, objpath, name):
1648
2252
"D-Bus signal"
1649
2253
pass
1650
2254
1651
@dbus.service.method(_interface, out_signature=u"ao")
2255
@dbus.service.method(_interface, out_signature="ao")
1652
2256
def GetAllClients(self):
1653
2257
"D-Bus method"
1654
2258
return dbus.Array(c.dbus_object_path
1655
for c in tcp_server.clients)
2259
for c in
2260
tcp_server.clients.itervalues())
1656
2261
1657
2262
@dbus.service.method(_interface,
1658
out_signature=u"a{oa{sv}}")
2263
out_signature="a{oa{sv}}")
1659
2264
def GetAllClientsWithProperties(self):
1660
2265
"D-Bus method"
1661
2266
return dbus.Dictionary(
1662
((c.dbus_object_path, c.GetAll(u""))
1663
for c in tcp_server.clients),
1664
signature=u"oa{sv}")
2267
((c.dbus_object_path, c.GetAll(""))
2268
for c in tcp_server.clients.itervalues()),
2269
signature="oa{sv}")
1665
2270
1666
@dbus.service.method(_interface, in_signature=u"o")
2271
@dbus.service.method(_interface, in_signature="o")
1667
2272
def RemoveClient(self, object_path):
1668
2273
"D-Bus method"
1669
for c in tcp_server.clients:
2274
for c in tcp_server.clients.itervalues():
1670
2275
if c.dbus_object_path == object_path:
1671
tcp_server.clients.remove(c)
2276
del tcp_server.clients[c.name]
1672
2277
c.remove_from_connection()
1673
2278
# Don't signal anything except ClientRemoved
1674
c.disable(signal=False)
2279
c.disable(quiet=True)
1675
2280
# Emit D-Bus signal
1676
2281
self.ClientRemoved(object_path, c.name)
1677
2282
return
1678
raise KeyError
2283
raise KeyError(object_path)
1679
2284
1680
2285
del _interface
1681
2286
1682
mandos_dbus_service = MandosDBusService()
1683
1684
for client in tcp_server.clients:
2287
class MandosDBusServiceTransitional(MandosDBusService):
2288
__metaclass__ = AlternateDBusNamesMetaclass
2289
mandos_dbus_service = MandosDBusServiceTransitional()
2290
2291
def cleanup():
2292
"Cleanup function; run on exit"
2293
service.cleanup()
2294
2295
multiprocessing.active_children()
2296
if not (tcp_server.clients or client_settings):
2297
return
2298
2299
# Store client before exiting. Secrets are encrypted with key based
2300
# on what config file has. If config file is removed/edited, old
2301
# secret will thus be unrecovable.
2302
clients = []
2303
for client in tcp_server.clients.itervalues():
2304
client.encrypt_secret(client_settings[client.name]["secret"])
2305
2306
client_dict = {}
2307
2308
# A list of attributes that will not be stored when shuting down.
2309
exclude = set(("bus", "changedstate", "secret"))
2310
for name, typ in inspect.getmembers(dbus.service.Object):
2311
exclude.add(name)
2312
2313
client_dict["encrypted_secret"] = client.encrypted_secret
2314
for attr in client.client_structure:
2315
if attr not in exclude:
2316
client_dict[attr] = getattr(client, attr)
2317
2318
clients.append(client_dict)
2319
del client_settings[client.name]["secret"]
2320
2321
try:
2322
with os.fdopen(os.open(stored_state_path, os.O_CREAT|os.O_WRONLY|os.O_TRUNC, 0600), "wb") as stored_state:
2323
pickle.dump((clients, client_settings), stored_state)
2324
except IOError as e:
2325
logger.warning("Could not save persistant state: {0}".format(e))
2326
if e.errno != errno.ENOENT:
2327
raise
2328
2329
# Delete all clients, and settings from config
2330
while tcp_server.clients:
2331
name, client = tcp_server.clients.popitem()
2332
if use_dbus:
2333
client.remove_from_connection()
2334
# Don't signal anything except ClientRemoved
2335
client.disable(quiet=True)
2336
if use_dbus:
2337
# Emit D-Bus signal
2338
mandos_dbus_service.ClientRemoved(client
2339
.dbus_object_path,
2340
client.name)
2341
client_settings.clear()
2342
2343
atexit.register(cleanup)
2344
2345
for client in tcp_server.clients.itervalues():
1685
2346
if use_dbus:
1686
2347
# Emit D-Bus signal
1687
mandos_dbus_service.ClientAdded(client.dbus_object_path,
1688
client.GetAll(u""))
1689
client.enable()
2348
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2349
# Need to initiate checking of clients
2350
if client.enabled:
2351
client.init_checker()
2352
1690
2353
1691
2354
tcp_server.enable()
1692
2355
tcp_server.server_activate()
1694
2357
# Find out what port we got
1695
2358
service.port = tcp_server.socket.getsockname()[1]
1696
2359
if use_ipv6:
1697
logger.info(u"Now listening on address %r, port %d,"
2360
logger.info("Now listening on address %r, port %d,"
1698
2361
" flowinfo %d, scope_id %d"
1699
2362
% tcp_server.socket.getsockname())
1700
2363
else: # IPv4
1701
logger.info(u"Now listening on address %r, port %d"
2364
logger.info("Now listening on address %r, port %d"
1702
2365
% tcp_server.socket.getsockname())
1703
2366
1704
2367
#service.interface = tcp_server.socket.getsockname()[3]
1707
2370
# From the Avahi example code
1708
2371
try:
1709
2372
service.activate()
1710
except dbus.exceptions.DBusException, error:
1711
logger.critical(u"DBusException: %s", error)
2373
except dbus.exceptions.DBusException as error:
2374
logger.critical("DBusException: %s", error)
2375
cleanup()
1712
2376
sys.exit(1)
1713
2377
# End of Avahi example code
1714
2378
1717
2381
(tcp_server.handle_request
1718
2382
(*args[2:], **kwargs) or True))
1719
2383
1720
logger.debug(u"Starting main loop")
2384
logger.debug("Starting main loop")
1721
2385
main_loop.run()
1722
except AvahiError, error:
1723
logger.critical(u"AvahiError: %s", error)
2386
except AvahiError as error:
2387
logger.critical("AvahiError: %s", error)
2388
cleanup()
1724
2389
sys.exit(1)
1725
2390
except KeyboardInterrupt:
1726
2391
if debug:
1727
print >> sys.stderr
1728
logger.debug(u"Server received KeyboardInterrupt")
1729
logger.debug(u"Server exiting")
2392
print("", file=sys.stderr)
2393
logger.debug("Server received KeyboardInterrupt")
2394
logger.debug("Server exiting")
2395
# Must run before the D-Bus bus name gets deregistered
2396
cleanup()
2397
1730
2398
1731
2399
if __name__ == '__main__':
1732
2400
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0