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- Committer: Björn Påhlsson
- Date: 2009-11-16 14:41:32 UTC
- mto: (24.1.154 mandos) (237.4.3 mandos-release)
- mto: This revision was merged to the branch mainline in revision 415.
- Revision ID: belorn@braxen-20091116144132-89ake84mbhgkhcah
todo
- files removed:
- DBUS-API
- debian/source
- files modified:
- .bzrignore
added
removed
mandos
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# "AvahiService" class, and some lines in "main".
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#
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# Everything else is
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# Copyright © 2008-2011 Teddy Hogeborn
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# Copyright © 2008-2011 Björn Påhlsson
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# Copyright © 2008,2009 Teddy Hogeborn
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# Copyright © 2008,2009 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@recompile.se>.
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# Contact the authors at <mandos@fukt.bsnet.se>.
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#
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from __future__ import (division, absolute_import, print_function,
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unicode_literals)
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from __future__ import division, with_statement, absolute_import
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import SocketServer as socketserver
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import socket
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import argparse
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import optparse
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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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import contextlib
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from contextlib import closing
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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 dbus
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import dbus.service
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SO_BINDTODEVICE = None
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version = "1.4.1"
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version = "1.0.12"
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#logger = logging.getLogger('mandos')
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logger = logging.Logger('mandos')
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logger = logging.Logger(u'mandos')
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syslogger = (logging.handlers.SysLogHandler
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(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
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address = str("/dev/log")))
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address = "/dev/log"))
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syslogger.setFormatter(logging.Formatter
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('Mandos [%(process)d]: %(levelname)s:'
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' %(message)s'))
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(u'Mandos [%(process)d]: %(levelname)s:'
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u' %(message)s'))
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logger.addHandler(syslogger)
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console = logging.StreamHandler()
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console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
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' %(levelname)s:'
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' %(message)s'))
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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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logger.addHandler(console)
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class AvahiError(Exception):
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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: 'Mandos'
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type: string; Example: '_mandos._tcp'.
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name: string; Example: u'Mandos'
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type: string; Example: u'_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 = "", host = "", max_renames = 32768,
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domain = u"", host = u"", 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("No suitable Zeroconf service name found"
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" after %i retries, exiting.",
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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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self.rename_count)
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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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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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('Mandos (%s) [%%(process)d]:'
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' %%(levelname)s: %%(message)s'
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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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self.remove()
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try:
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self.add()
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except dbus.exceptions.DBusException as error:
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logger.critical("DBusException: %s", error)
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self.cleanup()
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os._exit(1)
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self.add()
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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.entry_group_state_changed_match = (
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self.group.connect_to_signal(
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'StateChanged', self .entry_group_state_changed))
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logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
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self.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.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("Avahi entry group state change: %i", state)
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logger.debug(u"Avahi state change: %i", state)
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if state == avahi.ENTRY_GROUP_ESTABLISHED:
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logger.debug("Zeroconf service established.")
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logger.debug(u"Zeroconf service established.")
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elif state == avahi.ENTRY_GROUP_COLLISION:
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logger.info("Zeroconf service name collision.")
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logger.warning(u"Zeroconf service name collision.")
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self.rename()
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elif state == avahi.ENTRY_GROUP_FAILURE:
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logger.critical("Avahi: Error in group state changed %s",
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logger.critical(u"Avahi: Error in group state changed %s",
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unicode(error))
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raise AvahiGroupError("State changed: %s"
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raise AvahiGroupError(u"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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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.Free()
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self.group = None
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self.remove()
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def server_state_changed(self, state, error=None):
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def server_state_changed(self, state):
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"""Derived from the Avahi example code"""
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logger.debug("Avahi server state change: %i", state)
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bad_states = { avahi.SERVER_INVALID:
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"Zeroconf server invalid",
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avahi.SERVER_REGISTERING: None,
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avahi.SERVER_COLLISION:
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"Zeroconf server name collision",
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avahi.SERVER_FAILURE:
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"Zeroconf server failure" }
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if state in bad_states:
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if bad_states[state] is not None:
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if error is None:
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logger.error(bad_states[state])
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else:
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logger.error(bad_states[state] + ": %r", error)
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self.cleanup()
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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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elif state == avahi.SERVER_RUNNING:
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self.add()
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else:
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if error is None:
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logger.debug("Unknown state: %r", state)
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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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follow_name_owner_changes=True),
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avahi.DBUS_PATH_SERVER),
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avahi.DBUS_INTERFACE_SERVER)
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self.server.connect_to_signal("StateChanged",
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self.server.connect_to_signal(u"StateChanged",
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self.server_state_changed)
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self.server_state_changed(self.server.GetState())
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def _timedelta_to_milliseconds(td):
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"Convert a datetime.timedelta() to milliseconds"
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return ((td.days * 24 * 60 * 60 * 1000)
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+ (td.seconds * 1000)
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+ (td.microseconds // 1000))
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class Client(object):
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"""A representation of a client host served by this server.
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Attributes:
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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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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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checker: subprocess.Popen(); a running checker process used
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to see if the client lives.
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'None' if no process is running.
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checker_callback_tag: a gobject event source tag, or None
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checker_command: string; External command which is run to check
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if client lives. %() expansions are done at
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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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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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current_checker_command: string; current running checker_command
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disable_hook: If set, called by disable() as disable_hook(self)
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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
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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
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until this client is disabled
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extended_timeout: extra long timeout when password has been sent
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runtime_expansions: Allowed attributes for runtime expansion.
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expires: datetime.datetime(); time (UTC) when a client will be
311
disabled, or None
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"""
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runtime_expansions = ("approval_delay", "approval_duration",
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"created", "enabled", "fingerprint",
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"host", "interval", "last_checked_ok",
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"last_enabled", "name", "timeout")
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@staticmethod
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def _timedelta_to_milliseconds(td):
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"Convert a datetime.timedelta() to milliseconds"
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return ((td.days * 24 * 60 * 60 * 1000)
265
+ (td.seconds * 1000)
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+ (td.microseconds // 1000))
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def timeout_milliseconds(self):
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"Return the 'timeout' attribute in milliseconds"
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return _timedelta_to_milliseconds(self.timeout)
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def extended_timeout_milliseconds(self):
324
"Return the 'extended_timeout' attribute in milliseconds"
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return _timedelta_to_milliseconds(self.extended_timeout)
270
return self._timedelta_to_milliseconds(self.timeout)
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327
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def interval_milliseconds(self):
328
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"Return the 'interval' attribute in milliseconds"
329
return _timedelta_to_milliseconds(self.interval)
330
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def approval_delay_milliseconds(self):
332
return _timedelta_to_milliseconds(self.approval_delay)
274
return self._timedelta_to_milliseconds(self.interval)
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334
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def __init__(self, name = None, disable_hook=None, config=None):
335
277
"""Note: the 'checker' key in 'config' sets the
338
280
self.name = name
339
281
if config is None:
340
282
config = {}
341
logger.debug("Creating client %r", self.name)
283
logger.debug(u"Creating client %r", self.name)
342
284
# Uppercase and remove spaces from fingerprint for later
343
285
# comparison purposes with return value from the fingerprint()
344
286
# function
345
self.fingerprint = (config["fingerprint"].upper()
346
.replace(" ", ""))
347
logger.debug(" Fingerprint: %s", self.fingerprint)
348
if "secret" in config:
349
self.secret = config["secret"].decode("base64")
350
elif "secfile" in config:
351
with open(os.path.expanduser(os.path.expandvars
352
(config["secfile"])),
353
"rb") as secfile:
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"])))) as secfile:
354
296
self.secret = secfile.read()
355
297
else:
356
raise TypeError("No secret or secfile for client %s"
298
raise TypeError(u"No secret or secfile for client %s"
357
299
% self.name)
358
self.host = config.get("host", "")
300
self.host = config.get(u"host", u"")
359
301
self.created = datetime.datetime.utcnow()
360
302
self.enabled = False
361
self.last_approval_request = None
362
303
self.last_enabled = None
363
304
self.last_checked_ok = None
364
self.timeout = string_to_delta(config["timeout"])
365
self.extended_timeout = string_to_delta(config
366
["extended_timeout"])
367
self.interval = string_to_delta(config["interval"])
305
self.timeout = string_to_delta(config[u"timeout"])
306
self.interval = string_to_delta(config[u"interval"])
368
307
self.disable_hook = disable_hook
369
308
self.checker = None
370
309
self.checker_initiator_tag = None
371
310
self.disable_initiator_tag = None
372
self.expires = None
373
311
self.checker_callback_tag = None
374
self.checker_command = config["checker"]
312
self.checker_command = config[u"checker"]
375
313
self.current_checker_command = None
376
314
self.last_connect = None
377
self._approved = None
378
self.approved_by_default = config.get("approved_by_default",
379
True)
380
self.approvals_pending = 0
381
self.approval_delay = string_to_delta(
382
config["approval_delay"])
383
self.approval_duration = string_to_delta(
384
config["approval_duration"])
385
self.changedstate = (multiprocessing_manager
386
.Condition(multiprocessing_manager
387
.Lock()))
388
389
def send_changedstate(self):
390
self.changedstate.acquire()
391
self.changedstate.notify_all()
392
self.changedstate.release()
393
315
394
316
def enable(self):
395
317
"""Start this client's checker and timeout hooks"""
396
if getattr(self, "enabled", False):
318
if getattr(self, u"enabled", False):
397
319
# Already enabled
398
320
return
399
self.send_changedstate()
321
self.last_enabled = datetime.datetime.utcnow()
400
322
# Schedule a new checker to be started an 'interval' from now,
401
323
# and every interval from then on.
402
324
self.checker_initiator_tag = (gobject.timeout_add
403
325
(self.interval_milliseconds(),
404
326
self.start_checker))
327
# Also start a new checker *right now*.
328
self.start_checker()
405
329
# Schedule a disable() when 'timeout' has passed
406
self.expires = datetime.datetime.utcnow() + self.timeout
407
330
self.disable_initiator_tag = (gobject.timeout_add
408
331
(self.timeout_milliseconds(),
409
332
self.disable))
410
333
self.enabled = True
411
self.last_enabled = datetime.datetime.utcnow()
412
# Also start a new checker *right now*.
413
self.start_checker()
414
334
415
def disable(self, quiet=True):
335
def disable(self):
416
336
"""Disable this client."""
417
337
if not getattr(self, "enabled", False):
418
338
return False
419
if not quiet:
420
self.send_changedstate()
421
if not quiet:
422
logger.info("Disabling client %s", self.name)
423
if getattr(self, "disable_initiator_tag", False):
339
logger.info(u"Disabling client %s", self.name)
340
if getattr(self, u"disable_initiator_tag", False):
424
341
gobject.source_remove(self.disable_initiator_tag)
425
342
self.disable_initiator_tag = None
426
self.expires = None
427
if getattr(self, "checker_initiator_tag", False):
343
if getattr(self, u"checker_initiator_tag", False):
428
344
gobject.source_remove(self.checker_initiator_tag)
429
345
self.checker_initiator_tag = None
430
346
self.stop_checker()
445
361
if os.WIFEXITED(condition):
446
362
exitstatus = os.WEXITSTATUS(condition)
447
363
if exitstatus == 0:
448
logger.info("Checker for %(name)s succeeded",
364
logger.info(u"Checker for %(name)s succeeded",
449
365
vars(self))
450
366
self.checked_ok()
451
367
else:
452
logger.info("Checker for %(name)s failed",
368
logger.info(u"Checker for %(name)s failed",
453
369
vars(self))
454
370
else:
455
logger.warning("Checker for %(name)s crashed?",
371
logger.warning(u"Checker for %(name)s crashed?",
456
372
vars(self))
457
373
458
def checked_ok(self, timeout=None):
374
def checked_ok(self):
459
375
"""Bump up the timeout for this client.
460
376
461
377
This should only be called when the client has been seen,
462
378
alive and well.
463
379
"""
464
if timeout is None:
465
timeout = self.timeout
466
380
self.last_checked_ok = datetime.datetime.utcnow()
467
if self.disable_initiator_tag is not None:
468
gobject.source_remove(self.disable_initiator_tag)
469
if getattr(self, "enabled", False):
470
self.disable_initiator_tag = (gobject.timeout_add
471
(_timedelta_to_milliseconds
472
(timeout), self.disable))
473
self.expires = datetime.datetime.utcnow() + timeout
474
475
def need_approval(self):
476
self.last_approval_request = datetime.datetime.utcnow()
381
gobject.source_remove(self.disable_initiator_tag)
382
self.disable_initiator_tag = (gobject.timeout_add
383
(self.timeout_milliseconds(),
384
self.disable))
477
385
478
386
def start_checker(self):
479
387
"""Start a new checker subprocess if one is not running.
486
394
# client would inevitably timeout, since no checker would get
487
395
# a chance to run to completion. If we instead leave running
488
396
# checkers alone, the checker would have to take more time
489
# than 'timeout' for the client to be disabled, which is as it
490
# should be.
397
# than 'timeout' for the client to be declared invalid, which
398
# is as it should be.
491
399
492
400
# If a checker exists, make sure it is not a zombie
493
try:
401
if self.checker is not None:
494
402
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
495
except (AttributeError, OSError) as error:
496
if (isinstance(error, OSError)
497
and error.errno != errno.ECHILD):
498
raise error
499
else:
500
403
if pid:
501
logger.warning("Checker was a zombie")
404
logger.warning(u"Checker was a zombie")
502
405
gobject.source_remove(self.checker_callback_tag)
503
406
self.checker_callback(pid, status,
504
407
self.current_checker_command)
509
412
command = self.checker_command % self.host
510
413
except TypeError:
511
414
# Escape attributes for the shell
512
escaped_attrs = dict(
513
(attr,
514
re.escape(unicode(str(getattr(self, attr, "")),
515
errors=
516
'replace')))
517
for attr in
518
self.runtime_expansions)
519
415
escaped_attrs = dict((key,
416
re.escape(unicode(str(val),
417
errors=
418
u'replace')))
419
for key, val in
420
vars(self).iteritems())
520
421
try:
521
422
command = self.checker_command % escaped_attrs
522
except TypeError as error:
523
logger.error('Could not format string "%s":'
524
' %s', self.checker_command, error)
423
except TypeError, error:
424
logger.error(u'Could not format string "%s":'
425
u' %s', self.checker_command, error)
525
426
return True # Try again later
526
427
self.current_checker_command = command
527
428
try:
528
logger.info("Starting checker %r for %s",
429
logger.info(u"Starting checker %r for %s",
529
430
command, self.name)
530
431
# We don't need to redirect stdout and stderr, since
531
432
# in normal mode, that is already done by daemon(),
533
434
# always replaced by /dev/null.)
534
435
self.checker = subprocess.Popen(command,
535
436
close_fds=True,
536
shell=True, cwd="/")
437
shell=True, cwd=u"/")
537
438
self.checker_callback_tag = (gobject.child_watch_add
538
439
(self.checker.pid,
539
440
self.checker_callback,
544
445
if pid:
545
446
gobject.source_remove(self.checker_callback_tag)
546
447
self.checker_callback(pid, status, command)
547
except OSError as error:
548
logger.error("Failed to start subprocess: %s",
448
except OSError, error:
449
logger.error(u"Failed to start subprocess: %s",
549
450
error)
550
451
# Re-run this periodically if run by gobject.timeout_add
551
452
return True
555
456
if self.checker_callback_tag:
556
457
gobject.source_remove(self.checker_callback_tag)
557
458
self.checker_callback_tag = None
558
if getattr(self, "checker", None) is None:
459
if getattr(self, u"checker", None) is None:
559
460
return
560
logger.debug("Stopping checker for %(name)s", vars(self))
461
logger.debug(u"Stopping checker for %(name)s", vars(self))
561
462
try:
562
463
os.kill(self.checker.pid, signal.SIGTERM)
563
#time.sleep(0.5)
464
#os.sleep(0.5)
564
465
#if self.checker.poll() is None:
565
466
# os.kill(self.checker.pid, signal.SIGKILL)
566
except OSError as error:
467
except OSError, error:
567
468
if error.errno != errno.ESRCH: # No such process
568
469
raise
569
470
self.checker = None
570
571
572
def dbus_service_property(dbus_interface, signature="v",
573
access="readwrite", byte_arrays=False):
471
472
def still_valid(self):
473
"""Has the timeout not yet passed for this client?"""
474
if not getattr(self, u"enabled", False):
475
return False
476
now = datetime.datetime.utcnow()
477
if self.last_checked_ok is None:
478
return now < (self.created + self.timeout)
479
else:
480
return now < (self.last_checked_ok + self.timeout)
481
482
483
def dbus_service_property(dbus_interface, signature=u"v",
484
access=u"readwrite", byte_arrays=False):
574
485
"""Decorators for marking methods of a DBusObjectWithProperties to
575
486
become properties on the D-Bus.
576
487
581
492
dbus.service.method, except there is only "signature", since the
582
493
type from Get() and the type sent to Set() is the same.
583
494
"""
584
# Encoding deeply encoded byte arrays is not supported yet by the
585
# "Set" method, so we fail early here:
586
if byte_arrays and signature != "ay":
587
raise ValueError("Byte arrays not supported for non-'ay'"
588
" signature %r" % signature)
589
495
def decorator(func):
590
496
func._dbus_is_property = True
591
497
func._dbus_interface = dbus_interface
592
498
func._dbus_signature = signature
593
499
func._dbus_access = access
594
500
func._dbus_name = func.__name__
595
if func._dbus_name.endswith("_dbus_property"):
501
if func._dbus_name.endswith(u"_dbus_property"):
596
502
func._dbus_name = func._dbus_name[:-14]
597
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
503
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
598
504
return func
599
505
return decorator
600
506
620
526
621
527
class DBusObjectWithProperties(dbus.service.Object):
622
528
"""A D-Bus object with properties.
623
529
624
530
Classes inheriting from this can use the dbus_service_property
625
531
decorator to expose methods as D-Bus properties. It exposes the
626
532
standard Get(), Set(), and GetAll() methods on the D-Bus.
628
534
629
535
@staticmethod
630
536
def _is_dbus_property(obj):
631
return getattr(obj, "_dbus_is_property", False)
537
return getattr(obj, u"_dbus_is_property", False)
632
538
633
539
def _get_all_dbus_properties(self):
634
540
"""Returns a generator of (name, attribute) pairs
635
541
"""
636
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
637
for cls in self.__class__.__mro__
542
return ((prop._dbus_name, prop)
638
543
for name, prop in
639
inspect.getmembers(cls, self._is_dbus_property))
544
inspect.getmembers(self, self._is_dbus_property))
640
545
641
546
def _get_dbus_property(self, interface_name, property_name):
642
547
"""Returns a bound method if one exists which is a D-Bus
643
548
property with the specified name and interface.
644
549
"""
645
for cls in self.__class__.__mro__:
646
for name, value in (inspect.getmembers
647
(cls, self._is_dbus_property)):
648
if (value._dbus_name == property_name
649
and value._dbus_interface == interface_name):
650
return value.__get__(self)
651
550
for name in (property_name,
551
property_name + u"_dbus_property"):
552
prop = getattr(self, name, None)
553
if (prop is None
554
or not self._is_dbus_property(prop)
555
or prop._dbus_name != property_name
556
or (interface_name and prop._dbus_interface
557
and interface_name != prop._dbus_interface)):
558
continue
559
return prop
652
560
# No such property
653
raise DBusPropertyNotFound(self.dbus_object_path + ":"
654
+ interface_name + "."
561
raise DBusPropertyNotFound(self.dbus_object_path + u":"
562
+ interface_name + u"."
655
563
+ property_name)
656
564
657
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
658
out_signature="v")
565
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
566
out_signature=u"v")
659
567
def Get(self, interface_name, property_name):
660
568
"""Standard D-Bus property Get() method, see D-Bus standard.
661
569
"""
662
570
prop = self._get_dbus_property(interface_name, property_name)
663
if prop._dbus_access == "write":
571
if prop._dbus_access == u"write":
664
572
raise DBusPropertyAccessException(property_name)
665
573
value = prop()
666
if not hasattr(value, "variant_level"):
574
if not hasattr(value, u"variant_level"):
667
575
return value
668
576
return type(value)(value, variant_level=value.variant_level+1)
669
577
670
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
578
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
671
579
def Set(self, interface_name, property_name, value):
672
580
"""Standard D-Bus property Set() method, see D-Bus standard.
673
581
"""
674
582
prop = self._get_dbus_property(interface_name, property_name)
675
if prop._dbus_access == "read":
583
if prop._dbus_access == u"read":
676
584
raise DBusPropertyAccessException(property_name)
677
if prop._dbus_get_args_options["byte_arrays"]:
678
# The byte_arrays option is not supported yet on
679
# signatures other than "ay".
680
if prop._dbus_signature != "ay":
681
raise ValueError
585
if prop._dbus_get_args_options[u"byte_arrays"]:
682
586
value = dbus.ByteArray(''.join(unichr(byte)
683
587
for byte in value))
684
588
prop(value)
685
589
686
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
687
out_signature="a{sv}")
590
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
591
out_signature=u"a{sv}")
688
592
def GetAll(self, interface_name):
689
593
"""Standard D-Bus property GetAll() method, see D-Bus
690
594
standard.
691
595
692
596
Note: Will not include properties with access="write".
693
597
"""
694
598
all = {}
698
602
# Interface non-empty but did not match
699
603
continue
700
604
# Ignore write-only properties
701
if prop._dbus_access == "write":
605
if prop._dbus_access == u"write":
702
606
continue
703
607
value = prop()
704
if not hasattr(value, "variant_level"):
608
if not hasattr(value, u"variant_level"):
705
609
all[name] = value
706
610
continue
707
611
all[name] = type(value)(value, variant_level=
708
612
value.variant_level+1)
709
return dbus.Dictionary(all, signature="sv")
613
return dbus.Dictionary(all, signature=u"sv")
710
614
711
615
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
712
out_signature="s",
616
out_signature=u"s",
713
617
path_keyword='object_path',
714
618
connection_keyword='connection')
715
619
def Introspect(self, object_path, connection):
716
620
"""Standard D-Bus method, overloaded to insert property tags.
717
621
"""
718
622
xmlstring = dbus.service.Object.Introspect(self, object_path,
719
connection)
720
try:
721
document = xml.dom.minidom.parseString(xmlstring)
722
def make_tag(document, name, prop):
723
e = document.createElement("property")
724
e.setAttribute("name", name)
725
e.setAttribute("type", prop._dbus_signature)
726
e.setAttribute("access", prop._dbus_access)
727
return e
728
for if_tag in document.getElementsByTagName("interface"):
729
for tag in (make_tag(document, name, prop)
730
for name, prop
731
in self._get_all_dbus_properties()
732
if prop._dbus_interface
733
== if_tag.getAttribute("name")):
734
if_tag.appendChild(tag)
735
# Add the names to the return values for the
736
# "org.freedesktop.DBus.Properties" methods
737
if (if_tag.getAttribute("name")
738
== "org.freedesktop.DBus.Properties"):
739
for cn in if_tag.getElementsByTagName("method"):
740
if cn.getAttribute("name") == "Get":
741
for arg in cn.getElementsByTagName("arg"):
742
if (arg.getAttribute("direction")
743
== "out"):
744
arg.setAttribute("name", "value")
745
elif cn.getAttribute("name") == "GetAll":
746
for arg in cn.getElementsByTagName("arg"):
747
if (arg.getAttribute("direction")
748
== "out"):
749
arg.setAttribute("name", "props")
750
xmlstring = document.toxml("utf-8")
751
document.unlink()
752
except (AttributeError, xml.dom.DOMException,
753
xml.parsers.expat.ExpatError) as error:
754
logger.error("Failed to override Introspection method",
755
error)
623
connection)
624
document = xml.dom.minidom.parseString(xmlstring)
625
del xmlstring
626
def make_tag(document, name, prop):
627
e = document.createElement(u"property")
628
e.setAttribute(u"name", name)
629
e.setAttribute(u"type", prop._dbus_signature)
630
e.setAttribute(u"access", prop._dbus_access)
631
return e
632
for if_tag in document.getElementsByTagName(u"interface"):
633
for tag in (make_tag(document, name, prop)
634
for name, prop
635
in self._get_all_dbus_properties()
636
if prop._dbus_interface
637
== if_tag.getAttribute(u"name")):
638
if_tag.appendChild(tag)
639
xmlstring = document.toxml(u"utf-8")
640
document.unlink()
756
641
return xmlstring
757
642
758
643
759
def datetime_to_dbus (dt, variant_level=0):
760
"""Convert a UTC datetime.datetime() to a D-Bus type."""
761
if dt is None:
762
return dbus.String("", variant_level = variant_level)
763
return dbus.String(dt.isoformat(),
764
variant_level=variant_level)
765
766
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
767
.__metaclass__):
768
"""Applied to an empty subclass of a D-Bus object, this metaclass
769
will add additional D-Bus attributes matching a certain pattern.
770
"""
771
def __new__(mcs, name, bases, attr):
772
# Go through all the base classes which could have D-Bus
773
# methods, signals, or properties in them
774
for base in (b for b in bases
775
if issubclass(b, dbus.service.Object)):
776
# Go though all attributes of the base class
777
for attrname, attribute in inspect.getmembers(base):
778
# Ignore non-D-Bus attributes, and D-Bus attributes
779
# with the wrong interface name
780
if (not hasattr(attribute, "_dbus_interface")
781
or not attribute._dbus_interface
782
.startswith("se.recompile.Mandos")):
783
continue
784
# Create an alternate D-Bus interface name based on
785
# the current name
786
alt_interface = (attribute._dbus_interface
787
.replace("se.recompile.Mandos",
788
"se.bsnet.fukt.Mandos"))
789
# Is this a D-Bus signal?
790
if getattr(attribute, "_dbus_is_signal", False):
791
# Extract the original non-method function by
792
# black magic
793
nonmethod_func = (dict(
794
zip(attribute.func_code.co_freevars,
795
attribute.__closure__))["func"]
796
.cell_contents)
797
# Create a new, but exactly alike, function
798
# object, and decorate it to be a new D-Bus signal
799
# with the alternate D-Bus interface name
800
new_function = (dbus.service.signal
801
(alt_interface,
802
attribute._dbus_signature)
803
(types.FunctionType(
804
nonmethod_func.func_code,
805
nonmethod_func.func_globals,
806
nonmethod_func.func_name,
807
nonmethod_func.func_defaults,
808
nonmethod_func.func_closure)))
809
# Define a creator of a function to call both the
810
# old and new functions, so both the old and new
811
# signals gets sent when the function is called
812
def fixscope(func1, func2):
813
"""This function is a scope container to pass
814
func1 and func2 to the "call_both" function
815
outside of its arguments"""
816
def call_both(*args, **kwargs):
817
"""This function will emit two D-Bus
818
signals by calling func1 and func2"""
819
func1(*args, **kwargs)
820
func2(*args, **kwargs)
821
return call_both
822
# Create the "call_both" function and add it to
823
# the class
824
attr[attrname] = fixscope(attribute,
825
new_function)
826
# Is this a D-Bus method?
827
elif getattr(attribute, "_dbus_is_method", False):
828
# Create a new, but exactly alike, function
829
# object. Decorate it to be a new D-Bus method
830
# with the alternate D-Bus interface name. Add it
831
# to the class.
832
attr[attrname] = (dbus.service.method
833
(alt_interface,
834
attribute._dbus_in_signature,
835
attribute._dbus_out_signature)
836
(types.FunctionType
837
(attribute.func_code,
838
attribute.func_globals,
839
attribute.func_name,
840
attribute.func_defaults,
841
attribute.func_closure)))
842
# Is this a D-Bus property?
843
elif getattr(attribute, "_dbus_is_property", False):
844
# Create a new, but exactly alike, function
845
# object, and decorate it to be a new D-Bus
846
# property with the alternate D-Bus interface
847
# name. Add it to the class.
848
attr[attrname] = (dbus_service_property
849
(alt_interface,
850
attribute._dbus_signature,
851
attribute._dbus_access,
852
attribute
853
._dbus_get_args_options
854
["byte_arrays"])
855
(types.FunctionType
856
(attribute.func_code,
857
attribute.func_globals,
858
attribute.func_name,
859
attribute.func_defaults,
860
attribute.func_closure)))
861
return type.__new__(mcs, name, bases, attr)
862
863
644
class ClientDBus(Client, DBusObjectWithProperties):
864
645
"""A Client class using D-Bus
865
646
867
648
dbus_object_path: dbus.ObjectPath
868
649
bus: dbus.SystemBus()
869
650
"""
870
871
runtime_expansions = (Client.runtime_expansions
872
+ ("dbus_object_path",))
873
874
651
# dbus.service.Object doesn't use super(), so we can't either.
875
652
876
653
def __init__(self, bus = None, *args, **kwargs):
877
self._approvals_pending = 0
878
654
self.bus = bus
879
655
Client.__init__(self, *args, **kwargs)
880
656
# Only now, when this client is initialized, can it show up on
881
657
# the D-Bus
882
client_object_name = unicode(self.name).translate(
883
{ord("."): ord("_"),
884
ord("-"): ord("_")})
885
658
self.dbus_object_path = (dbus.ObjectPath
886
("/clients/" + client_object_name))
659
(u"/clients/"
660
+ self.name.replace(u".", u"_")))
887
661
DBusObjectWithProperties.__init__(self, self.bus,
888
662
self.dbus_object_path)
889
890
def notifychangeproperty(transform_func,
891
dbus_name, type_func=lambda x: x,
892
variant_level=1):
893
""" Modify a variable so that it's a property which announces
894
its changes to DBus.
895
896
transform_fun: Function that takes a value and a variant_level
897
and transforms it to a D-Bus type.
898
dbus_name: D-Bus name of the variable
899
type_func: Function that transform the value before sending it
900
to the D-Bus. Default: no transform
901
variant_level: D-Bus variant level. Default: 1
902
"""
903
attrname = "_{0}".format(dbus_name)
904
def setter(self, value):
905
if hasattr(self, "dbus_object_path"):
906
if (not hasattr(self, attrname) or
907
type_func(getattr(self, attrname, None))
908
!= type_func(value)):
909
dbus_value = transform_func(type_func(value),
910
variant_level
911
=variant_level)
912
self.PropertyChanged(dbus.String(dbus_name),
913
dbus_value)
914
setattr(self, attrname, value)
915
916
return property(lambda self: getattr(self, attrname), setter)
917
918
919
expires = notifychangeproperty(datetime_to_dbus, "Expires")
920
approvals_pending = notifychangeproperty(dbus.Boolean,
921
"ApprovalPending",
922
type_func = bool)
923
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
924
last_enabled = notifychangeproperty(datetime_to_dbus,
925
"LastEnabled")
926
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
927
type_func = lambda checker:
928
checker is not None)
929
last_checked_ok = notifychangeproperty(datetime_to_dbus,
930
"LastCheckedOK")
931
last_approval_request = notifychangeproperty(
932
datetime_to_dbus, "LastApprovalRequest")
933
approved_by_default = notifychangeproperty(dbus.Boolean,
934
"ApprovedByDefault")
935
approval_delay = notifychangeproperty(dbus.UInt16,
936
"ApprovalDelay",
937
type_func =
938
_timedelta_to_milliseconds)
939
approval_duration = notifychangeproperty(
940
dbus.UInt16, "ApprovalDuration",
941
type_func = _timedelta_to_milliseconds)
942
host = notifychangeproperty(dbus.String, "Host")
943
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
944
type_func =
945
_timedelta_to_milliseconds)
946
extended_timeout = notifychangeproperty(
947
dbus.UInt16, "ExtendedTimeout",
948
type_func = _timedelta_to_milliseconds)
949
interval = notifychangeproperty(dbus.UInt16,
950
"Interval",
951
type_func =
952
_timedelta_to_milliseconds)
953
checker_command = notifychangeproperty(dbus.String, "Checker")
954
955
del notifychangeproperty
663
664
@staticmethod
665
def _datetime_to_dbus(dt, variant_level=0):
666
"""Convert a UTC datetime.datetime() to a D-Bus type."""
667
return dbus.String(dt.isoformat(),
668
variant_level=variant_level)
669
670
def enable(self):
671
oldstate = getattr(self, u"enabled", False)
672
r = Client.enable(self)
673
if oldstate != self.enabled:
674
# Emit D-Bus signals
675
self.PropertyChanged(dbus.String(u"enabled"),
676
dbus.Boolean(True, variant_level=1))
677
self.PropertyChanged(
678
dbus.String(u"last_enabled"),
679
self._datetime_to_dbus(self.last_enabled,
680
variant_level=1))
681
return r
682
683
def disable(self, signal = True):
684
oldstate = getattr(self, u"enabled", False)
685
r = Client.disable(self)
686
if signal and oldstate != self.enabled:
687
# Emit D-Bus signal
688
self.PropertyChanged(dbus.String(u"enabled"),
689
dbus.Boolean(False, variant_level=1))
690
return r
956
691
957
692
def __del__(self, *args, **kwargs):
958
693
try:
959
694
self.remove_from_connection()
960
695
except LookupError:
961
696
pass
962
if hasattr(DBusObjectWithProperties, "__del__"):
697
if hasattr(DBusObjectWithProperties, u"__del__"):
963
698
DBusObjectWithProperties.__del__(self, *args, **kwargs)
964
699
Client.__del__(self, *args, **kwargs)
965
700
967
702
*args, **kwargs):
968
703
self.checker_callback_tag = None
969
704
self.checker = None
705
# Emit D-Bus signal
706
self.PropertyChanged(dbus.String(u"checker_running"),
707
dbus.Boolean(False, variant_level=1))
970
708
if os.WIFEXITED(condition):
971
709
exitstatus = os.WEXITSTATUS(condition)
972
710
# Emit D-Bus signal
982
720
return Client.checker_callback(self, pid, condition, command,
983
721
*args, **kwargs)
984
722
723
def checked_ok(self, *args, **kwargs):
724
r = Client.checked_ok(self, *args, **kwargs)
725
# Emit D-Bus signal
726
self.PropertyChanged(
727
dbus.String(u"last_checked_ok"),
728
(self._datetime_to_dbus(self.last_checked_ok,
729
variant_level=1)))
730
return r
731
985
732
def start_checker(self, *args, **kwargs):
986
733
old_checker = self.checker
987
734
if self.checker is not None:
994
741
and old_checker_pid != self.checker.pid):
995
742
# Emit D-Bus signal
996
743
self.CheckerStarted(self.current_checker_command)
997
return r
998
999
def _reset_approved(self):
1000
self._approved = None
1001
return False
1002
1003
def approve(self, value=True):
1004
self.send_changedstate()
1005
self._approved = value
1006
gobject.timeout_add(_timedelta_to_milliseconds
1007
(self.approval_duration),
1008
self._reset_approved)
1009
1010
1011
## D-Bus methods, signals & properties
1012
_interface = "se.recompile.Mandos.Client"
1013
1014
## Signals
744
self.PropertyChanged(
745
dbus.String(u"checker_running"),
746
dbus.Boolean(True, variant_level=1))
747
return r
748
749
def stop_checker(self, *args, **kwargs):
750
old_checker = getattr(self, u"checker", None)
751
r = Client.stop_checker(self, *args, **kwargs)
752
if (old_checker is not None
753
and getattr(self, u"checker", None) is None):
754
self.PropertyChanged(dbus.String(u"checker_running"),
755
dbus.Boolean(False, variant_level=1))
756
return r
757
758
## D-Bus methods & signals
759
_interface = u"se.bsnet.fukt.Mandos.Client"
1015
760
1016
761
# CheckerCompleted - signal
1017
@dbus.service.signal(_interface, signature="nxs")
762
@dbus.service.signal(_interface, signature=u"nxs")
1018
763
def CheckerCompleted(self, exitcode, waitstatus, command):
1019
764
"D-Bus signal"
1020
765
pass
1021
766
1022
767
# CheckerStarted - signal
1023
@dbus.service.signal(_interface, signature="s")
768
@dbus.service.signal(_interface, signature=u"s")
1024
769
def CheckerStarted(self, command):
1025
770
"D-Bus signal"
1026
771
pass
1027
772
1028
773
# PropertyChanged - signal
1029
@dbus.service.signal(_interface, signature="sv")
774
@dbus.service.signal(_interface, signature=u"sv")
1030
775
def PropertyChanged(self, property, value):
1031
776
"D-Bus signal"
1032
777
pass
1033
778
1034
# GotSecret - signal
779
# ReceivedSecret - signal
1035
780
@dbus.service.signal(_interface)
1036
def GotSecret(self):
1037
"""D-Bus signal
1038
Is sent after a successful transfer of secret from the Mandos
1039
server to mandos-client
1040
"""
781
def ReceivedSecret(self):
782
"D-Bus signal"
1041
783
pass
1042
784
1043
785
# Rejected - signal
1044
@dbus.service.signal(_interface, signature="s")
1045
def Rejected(self, reason):
786
@dbus.service.signal(_interface)
787
def Rejected(self):
1046
788
"D-Bus signal"
1047
789
pass
1048
790
1049
# NeedApproval - signal
1050
@dbus.service.signal(_interface, signature="tb")
1051
def NeedApproval(self, timeout, default):
1052
"D-Bus signal"
1053
return self.need_approval()
1054
1055
## Methods
1056
1057
# Approve - method
1058
@dbus.service.method(_interface, in_signature="b")
1059
def Approve(self, value):
1060
self.approve(value)
1061
1062
# CheckedOK - method
1063
@dbus.service.method(_interface)
1064
def CheckedOK(self):
1065
self.checked_ok()
1066
1067
# Enable - method
1068
@dbus.service.method(_interface)
1069
def Enable(self):
1070
"D-Bus method"
1071
self.enable()
1072
1073
# StartChecker - method
1074
@dbus.service.method(_interface)
1075
def StartChecker(self):
1076
"D-Bus method"
1077
self.start_checker()
1078
1079
# Disable - method
1080
@dbus.service.method(_interface)
1081
def Disable(self):
1082
"D-Bus method"
1083
self.disable()
1084
1085
# StopChecker - method
1086
@dbus.service.method(_interface)
1087
def StopChecker(self):
1088
self.stop_checker()
1089
1090
## Properties
1091
1092
# ApprovalPending - property
1093
@dbus_service_property(_interface, signature="b", access="read")
1094
def ApprovalPending_dbus_property(self):
1095
return dbus.Boolean(bool(self.approvals_pending))
1096
1097
# ApprovedByDefault - property
1098
@dbus_service_property(_interface, signature="b",
1099
access="readwrite")
1100
def ApprovedByDefault_dbus_property(self, value=None):
1101
if value is None: # get
1102
return dbus.Boolean(self.approved_by_default)
1103
self.approved_by_default = bool(value)
1104
1105
# ApprovalDelay - property
1106
@dbus_service_property(_interface, signature="t",
1107
access="readwrite")
1108
def ApprovalDelay_dbus_property(self, value=None):
1109
if value is None: # get
1110
return dbus.UInt64(self.approval_delay_milliseconds())
1111
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1112
1113
# ApprovalDuration - property
1114
@dbus_service_property(_interface, signature="t",
1115
access="readwrite")
1116
def ApprovalDuration_dbus_property(self, value=None):
1117
if value is None: # get
1118
return dbus.UInt64(_timedelta_to_milliseconds(
1119
self.approval_duration))
1120
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1121
1122
# Name - property
1123
@dbus_service_property(_interface, signature="s", access="read")
1124
def Name_dbus_property(self):
791
# name - property
792
@dbus_service_property(_interface, signature=u"s", access=u"read")
793
def name_dbus_property(self):
1125
794
return dbus.String(self.name)
1126
795
1127
# Fingerprint - property
1128
@dbus_service_property(_interface, signature="s", access="read")
1129
def Fingerprint_dbus_property(self):
796
# fingerprint - property
797
@dbus_service_property(_interface, signature=u"s", access=u"read")
798
def fingerprint_dbus_property(self):
1130
799
return dbus.String(self.fingerprint)
1131
800
1132
# Host - property
1133
@dbus_service_property(_interface, signature="s",
1134
access="readwrite")
1135
def Host_dbus_property(self, value=None):
801
# host - property
802
@dbus_service_property(_interface, signature=u"s",
803
access=u"readwrite")
804
def host_dbus_property(self, value=None):
1136
805
if value is None: # get
1137
806
return dbus.String(self.host)
1138
807
self.host = value
1139
1140
# Created - property
1141
@dbus_service_property(_interface, signature="s", access="read")
1142
def Created_dbus_property(self):
1143
return dbus.String(datetime_to_dbus(self.created))
1144
1145
# LastEnabled - property
1146
@dbus_service_property(_interface, signature="s", access="read")
1147
def LastEnabled_dbus_property(self):
1148
return datetime_to_dbus(self.last_enabled)
1149
1150
# Enabled - property
1151
@dbus_service_property(_interface, signature="b",
1152
access="readwrite")
1153
def Enabled_dbus_property(self, value=None):
808
# Emit D-Bus signal
809
self.PropertyChanged(dbus.String(u"host"),
810
dbus.String(value, variant_level=1))
811
812
# created - property
813
@dbus_service_property(_interface, signature=u"s", access=u"read")
814
def created_dbus_property(self):
815
return dbus.String(self._datetime_to_dbus(self.created))
816
817
# last_enabled - property
818
@dbus_service_property(_interface, signature=u"s", access=u"read")
819
def last_enabled_dbus_property(self):
820
if self.last_enabled is None:
821
return dbus.String(u"")
822
return dbus.String(self._datetime_to_dbus(self.last_enabled))
823
824
# enabled - property
825
@dbus_service_property(_interface, signature=u"b",
826
access=u"readwrite")
827
def enabled_dbus_property(self, value=None):
1154
828
if value is None: # get
1155
829
return dbus.Boolean(self.enabled)
1156
830
if value:
1158
832
else:
1159
833
self.disable()
1160
834
1161
# LastCheckedOK - property
1162
@dbus_service_property(_interface, signature="s",
1163
access="readwrite")
1164
def LastCheckedOK_dbus_property(self, value=None):
1165
if value is not None:
1166
self.checked_ok()
1167
return
1168
return datetime_to_dbus(self.last_checked_ok)
1169
1170
# Expires - property
1171
@dbus_service_property(_interface, signature="s", access="read")
1172
def Expires_dbus_property(self):
1173
return datetime_to_dbus(self.expires)
1174
1175
# LastApprovalRequest - property
1176
@dbus_service_property(_interface, signature="s", access="read")
1177
def LastApprovalRequest_dbus_property(self):
1178
return datetime_to_dbus(self.last_approval_request)
1179
1180
# Timeout - property
1181
@dbus_service_property(_interface, signature="t",
1182
access="readwrite")
1183
def Timeout_dbus_property(self, value=None):
835
# last_checked_ok - property
836
@dbus_service_property(_interface, signature=u"s", access=u"read")
837
def last_checked_ok_dbus_property(self):
838
if self.last_checked_ok is None:
839
return dbus.String(u"")
840
return dbus.String(self._datetime_to_dbus(self
841
.last_checked_ok))
842
843
# timeout - property
844
@dbus_service_property(_interface, signature=u"t",
845
access=u"readwrite")
846
def timeout_dbus_property(self, value=None):
1184
847
if value is None: # get
1185
848
return dbus.UInt64(self.timeout_milliseconds())
1186
849
self.timeout = datetime.timedelta(0, 0, 0, value)
1187
if getattr(self, "disable_initiator_tag", None) is None:
850
# Emit D-Bus signal
851
self.PropertyChanged(dbus.String(u"timeout"),
852
dbus.UInt64(value, variant_level=1))
853
if getattr(self, u"disable_initiator_tag", None) is None:
1188
854
return
1189
855
# Reschedule timeout
1190
856
gobject.source_remove(self.disable_initiator_tag)
1191
857
self.disable_initiator_tag = None
1192
self.expires = None
1193
time_to_die = _timedelta_to_milliseconds((self
1194
.last_checked_ok
1195
+ self.timeout)
1196
- datetime.datetime
1197
.utcnow())
858
time_to_die = (self.
859
_timedelta_to_milliseconds((self
860
.last_checked_ok
861
+ self.timeout)
862
- datetime.datetime
863
.utcnow()))
1198
864
if time_to_die <= 0:
1199
865
# The timeout has passed
1200
866
self.disable()
1201
867
else:
1202
self.expires = (datetime.datetime.utcnow()
1203
+ datetime.timedelta(milliseconds =
1204
time_to_die))
1205
868
self.disable_initiator_tag = (gobject.timeout_add
1206
869
(time_to_die, self.disable))
1207
870
1208
# ExtendedTimeout - property
1209
@dbus_service_property(_interface, signature="t",
1210
access="readwrite")
1211
def ExtendedTimeout_dbus_property(self, value=None):
1212
if value is None: # get
1213
return dbus.UInt64(self.extended_timeout_milliseconds())
1214
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1215
1216
# Interval - property
1217
@dbus_service_property(_interface, signature="t",
1218
access="readwrite")
1219
def Interval_dbus_property(self, value=None):
871
# interval - property
872
@dbus_service_property(_interface, signature=u"t",
873
access=u"readwrite")
874
def interval_dbus_property(self, value=None):
1220
875
if value is None: # get
1221
876
return dbus.UInt64(self.interval_milliseconds())
1222
877
self.interval = datetime.timedelta(0, 0, 0, value)
1223
if getattr(self, "checker_initiator_tag", None) is None:
878
# Emit D-Bus signal
879
self.PropertyChanged(dbus.String(u"interval"),
880
dbus.UInt64(value, variant_level=1))
881
if getattr(self, u"checker_initiator_tag", None) is None:
1224
882
return
1225
883
# Reschedule checker run
1226
884
gobject.source_remove(self.checker_initiator_tag)
1227
885
self.checker_initiator_tag = (gobject.timeout_add
1228
886
(value, self.start_checker))
1229
887
self.start_checker() # Start one now, too
1230
1231
# Checker - property
1232
@dbus_service_property(_interface, signature="s",
1233
access="readwrite")
1234
def Checker_dbus_property(self, value=None):
888
889
# checker - property
890
@dbus_service_property(_interface, signature=u"s",
891
access=u"readwrite")
892
def checker_dbus_property(self, value=None):
1235
893
if value is None: # get
1236
894
return dbus.String(self.checker_command)
1237
895
self.checker_command = value
896
# Emit D-Bus signal
897
self.PropertyChanged(dbus.String(u"checker"),
898
dbus.String(self.checker_command,
899
variant_level=1))
1238
900
1239
# CheckerRunning - property
1240
@dbus_service_property(_interface, signature="b",
1241
access="readwrite")
1242
def CheckerRunning_dbus_property(self, value=None):
901
# checker_running - property
902
@dbus_service_property(_interface, signature=u"b",
903
access=u"readwrite")
904
def checker_running_dbus_property(self, value=None):
1243
905
if value is None: # get
1244
906
return dbus.Boolean(self.checker is not None)
1245
907
if value:
1247
909
else:
1248
910
self.stop_checker()
1249
911
1250
# ObjectPath - property
1251
@dbus_service_property(_interface, signature="o", access="read")
1252
def ObjectPath_dbus_property(self):
912
# object_path - property
913
@dbus_service_property(_interface, signature=u"o", access=u"read")
914
def object_path_dbus_property(self):
1253
915
return self.dbus_object_path # is already a dbus.ObjectPath
1254
916
1255
# Secret = property
1256
@dbus_service_property(_interface, signature="ay",
1257
access="write", byte_arrays=True)
1258
def Secret_dbus_property(self, value):
917
# secret = property xxx
918
@dbus_service_property(_interface, signature=u"ay",
919
access=u"write", byte_arrays=True)
920
def secret_dbus_property(self, value):
1259
921
self.secret = str(value)
1260
922
1261
923
del _interface
1262
924
1263
925
1264
class ProxyClient(object):
1265
def __init__(self, child_pipe, fpr, address):
1266
self._pipe = child_pipe
1267
self._pipe.send(('init', fpr, address))
1268
if not self._pipe.recv():
1269
raise KeyError()
1270
1271
def __getattribute__(self, name):
1272
if(name == '_pipe'):
1273
return super(ProxyClient, self).__getattribute__(name)
1274
self._pipe.send(('getattr', name))
1275
data = self._pipe.recv()
1276
if data[0] == 'data':
1277
return data[1]
1278
if data[0] == 'function':
1279
def func(*args, **kwargs):
1280
self._pipe.send(('funcall', name, args, kwargs))
1281
return self._pipe.recv()[1]
1282
return func
1283
1284
def __setattr__(self, name, value):
1285
if(name == '_pipe'):
1286
return super(ProxyClient, self).__setattr__(name, value)
1287
self._pipe.send(('setattr', name, value))
1288
1289
class ClientDBusTransitional(ClientDBus):
1290
__metaclass__ = AlternateDBusNamesMetaclass
1291
1292
926
class ClientHandler(socketserver.BaseRequestHandler, object):
1293
927
"""A class to handle client connections.
1294
928
1296
930
Note: This will run in its own forked process."""
1297
931
1298
932
def handle(self):
1299
with contextlib.closing(self.server.child_pipe) as child_pipe:
1300
logger.info("TCP connection from: %s",
1301
unicode(self.client_address))
1302
logger.debug("Pipe FD: %d",
1303
self.server.child_pipe.fileno())
1304
933
logger.info(u"TCP connection from: %s",
934
unicode(self.client_address))
935
logger.debug(u"IPC Pipe FD: %d", self.server.pipe[1])
936
# Open IPC pipe to parent process
937
with closing(os.fdopen(self.server.pipe[1], u"w", 1)) as ipc:
1305
938
session = (gnutls.connection
1306
939
.ClientSession(self.request,
1307
940
gnutls.connection
1308
941
.X509Credentials()))
1309
942
943
line = self.request.makefile().readline()
944
logger.debug(u"Protocol version: %r", line)
945
try:
946
if int(line.strip().split()[0]) > 1:
947
raise RuntimeError
948
except (ValueError, IndexError, RuntimeError), error:
949
logger.error(u"Unknown protocol version: %s", error)
950
return
951
1310
952
# Note: gnutls.connection.X509Credentials is really a
1311
953
# generic GnuTLS certificate credentials object so long as
1312
954
# no X.509 keys are added to it. Therefore, we can use it
1313
955
# here despite using OpenPGP certificates.
1314
956
1315
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1316
# "+AES-256-CBC", "+SHA1",
1317
# "+COMP-NULL", "+CTYPE-OPENPGP",
1318
# "+DHE-DSS"))
957
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
958
# u"+AES-256-CBC", u"+SHA1",
959
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
960
# u"+DHE-DSS"))
1319
961
# Use a fallback default, since this MUST be set.
1320
962
priority = self.server.gnutls_priority
1321
963
if priority is None:
1322
priority = "NORMAL"
964
priority = u"NORMAL"
1323
965
(gnutls.library.functions
1324
966
.gnutls_priority_set_direct(session._c_object,
1325
967
priority, None))
1326
968
1327
# Start communication using the Mandos protocol
1328
# Get protocol number
1329
line = self.request.makefile().readline()
1330
logger.debug("Protocol version: %r", line)
1331
try:
1332
if int(line.strip().split()[0]) > 1:
1333
raise RuntimeError
1334
except (ValueError, IndexError, RuntimeError) as error:
1335
logger.error("Unknown protocol version: %s", error)
1336
return
1337
1338
# Start GnuTLS connection
1339
969
try:
1340
970
session.handshake()
1341
except gnutls.errors.GNUTLSError as error:
1342
logger.warning("Handshake failed: %s", error)
971
except gnutls.errors.GNUTLSError, error:
972
logger.warning(u"Handshake failed: %s", error)
1343
973
# Do not run session.bye() here: the session is not
1344
974
# established. Just abandon the request.
1345
975
return
1346
logger.debug("Handshake succeeded")
1347
1348
approval_required = False
976
logger.debug(u"Handshake succeeded")
1349
977
try:
1350
try:
1351
fpr = self.fingerprint(self.peer_certificate
1352
(session))
1353
except (TypeError,
1354
gnutls.errors.GNUTLSError) as error:
1355
logger.warning("Bad certificate: %s", error)
1356
return
1357
logger.debug("Fingerprint: %s", fpr)
1358
1359
try:
1360
client = ProxyClient(child_pipe, fpr,
1361
self.client_address)
1362
except KeyError:
1363
return
1364
1365
if client.approval_delay:
1366
delay = client.approval_delay
1367
client.approvals_pending += 1
1368
approval_required = True
1369
1370
while True:
1371
if not client.enabled:
1372
logger.info("Client %s is disabled",
1373
client.name)
1374
if self.server.use_dbus:
1375
# Emit D-Bus signal
1376
client.Rejected("Disabled")
1377
return
1378
1379
if client._approved or not client.approval_delay:
1380
#We are approved or approval is disabled
1381
break
1382
elif client._approved is None:
1383
logger.info("Client %s needs approval",
1384
client.name)
1385
if self.server.use_dbus:
1386
# Emit D-Bus signal
1387
client.NeedApproval(
1388
client.approval_delay_milliseconds(),
1389
client.approved_by_default)
1390
else:
1391
logger.warning("Client %s was not approved",
1392
client.name)
1393
if self.server.use_dbus:
1394
# Emit D-Bus signal
1395
client.Rejected("Denied")
1396
return
1397
1398
#wait until timeout or approved
1399
time = datetime.datetime.now()
1400
client.changedstate.acquire()
1401
(client.changedstate.wait
1402
(float(client._timedelta_to_milliseconds(delay)
1403
/ 1000)))
1404
client.changedstate.release()
1405
time2 = datetime.datetime.now()
1406
if (time2 - time) >= delay:
1407
if not client.approved_by_default:
1408
logger.warning("Client %s timed out while"
1409
" waiting for approval",
1410
client.name)
1411
if self.server.use_dbus:
1412
# Emit D-Bus signal
1413
client.Rejected("Approval timed out")
1414
return
1415
else:
1416
break
1417
else:
1418
delay -= time2 - time
1419
1420
sent_size = 0
1421
while sent_size < len(client.secret):
1422
try:
1423
sent = session.send(client.secret[sent_size:])
1424
except gnutls.errors.GNUTLSError as error:
1425
logger.warning("gnutls send failed")
1426
return
1427
logger.debug("Sent: %d, remaining: %d",
1428
sent, len(client.secret)
1429
- (sent_size + sent))
1430
sent_size += sent
1431
1432
logger.info("Sending secret to %s", client.name)
1433
# bump the timeout using extended_timeout
1434
client.checked_ok(client.extended_timeout)
1435
if self.server.use_dbus:
1436
# Emit D-Bus signal
1437
client.GotSecret()
978
fpr = self.fingerprint(self.peer_certificate(session))
979
except (TypeError, gnutls.errors.GNUTLSError), error:
980
logger.warning(u"Bad certificate: %s", error)
981
session.bye()
982
return
983
logger.debug(u"Fingerprint: %s", fpr)
1438
984
1439
finally:
1440
if approval_required:
1441
client.approvals_pending -= 1
1442
try:
1443
session.bye()
1444
except gnutls.errors.GNUTLSError as error:
1445
logger.warning("GnuTLS bye failed")
985
for c in self.server.clients:
986
if c.fingerprint == fpr:
987
client = c
988
break
989
else:
990
ipc.write(u"NOTFOUND %s %s\n"
991
% (fpr, unicode(self.client_address)))
992
session.bye()
993
return
994
# Have to check if client.still_valid(), since it is
995
# possible that the client timed out while establishing
996
# the GnuTLS session.
997
if not client.still_valid():
998
ipc.write(u"INVALID %s\n" % client.name)
999
session.bye()
1000
return
1001
ipc.write(u"SENDING %s\n" % client.name)
1002
sent_size = 0
1003
while sent_size < len(client.secret):
1004
sent = session.send(client.secret[sent_size:])
1005
logger.debug(u"Sent: %d, remaining: %d",
1006
sent, len(client.secret)
1007
- (sent_size + sent))
1008
sent_size += sent
1009
session.bye()
1446
1010
1447
1011
@staticmethod
1448
1012
def peer_certificate(session):
1458
1022
.gnutls_certificate_get_peers
1459
1023
(session._c_object, ctypes.byref(list_size)))
1460
1024
if not bool(cert_list) and list_size.value != 0:
1461
raise gnutls.errors.GNUTLSError("error getting peer"
1462
" certificate")
1025
raise gnutls.errors.GNUTLSError(u"error getting peer"
1026
u" certificate")
1463
1027
if list_size.value == 0:
1464
1028
return None
1465
1029
cert = cert_list[0]
1491
1055
if crtverify.value != 0:
1492
1056
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1493
1057
raise (gnutls.errors.CertificateSecurityError
1494
("Verify failed"))
1058
(u"Verify failed"))
1495
1059
# New buffer for the fingerprint
1496
1060
buf = ctypes.create_string_buffer(20)
1497
1061
buf_len = ctypes.c_size_t()
1504
1068
# Convert the buffer to a Python bytestring
1505
1069
fpr = ctypes.string_at(buf, buf_len.value)
1506
1070
# Convert the bytestring to hexadecimal notation
1507
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
1071
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1508
1072
return hex_fpr
1509
1073
1510
1074
1511
class MultiprocessingMixIn(object):
1512
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1513
def sub_process_main(self, request, address):
1514
try:
1515
self.finish_request(request, address)
1516
except:
1517
self.handle_error(request, address)
1518
self.close_request(request)
1519
1520
def process_request(self, request, address):
1521
"""Start a new process to process the request."""
1522
proc = multiprocessing.Process(target = self.sub_process_main,
1523
args = (request,
1524
address))
1525
proc.start()
1526
return proc
1527
1528
1529
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1530
""" adds a pipe to the MixIn """
1075
class ForkingMixInWithPipe(socketserver.ForkingMixIn, object):
1076
"""Like socketserver.ForkingMixIn, but also pass a pipe."""
1531
1077
def process_request(self, request, client_address):
1532
1078
"""Overrides and wraps the original process_request().
1533
1079
1534
1080
This function creates a new pipe in self.pipe
1535
1081
"""
1536
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1537
1538
proc = MultiprocessingMixIn.process_request(self, request,
1539
client_address)
1540
self.child_pipe.close()
1541
self.add_pipe(parent_pipe, proc)
1542
1543
def add_pipe(self, parent_pipe, proc):
1082
self.pipe = os.pipe()
1083
super(ForkingMixInWithPipe,
1084
self).process_request(request, client_address)
1085
os.close(self.pipe[1]) # close write end
1086
self.add_pipe(self.pipe[0])
1087
def add_pipe(self, pipe):
1544
1088
"""Dummy function; override as necessary"""
1545
raise NotImplementedError
1546
1547
1548
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1089
os.close(pipe)
1090
1091
1092
class IPv6_TCPServer(ForkingMixInWithPipe,
1549
1093
socketserver.TCPServer, object):
1550
1094
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1551
1095
1567
1111
bind to an address or port if they were not specified."""
1568
1112
if self.interface is not None:
1569
1113
if SO_BINDTODEVICE is None:
1570
logger.error("SO_BINDTODEVICE does not exist;"
1571
" cannot bind to interface %s",
1114
logger.error(u"SO_BINDTODEVICE does not exist;"
1115
u" cannot bind to interface %s",
1572
1116
self.interface)
1573
1117
else:
1574
1118
try:
1575
1119
self.socket.setsockopt(socket.SOL_SOCKET,
1576
1120
SO_BINDTODEVICE,
1577
1121
str(self.interface
1578
+ '\0'))
1579
except socket.error as error:
1122
+ u'\0'))
1123
except socket.error, error:
1580
1124
if error[0] == errno.EPERM:
1581
logger.error("No permission to"
1582
" bind to interface %s",
1125
logger.error(u"No permission to"
1126
u" bind to interface %s",
1583
1127
self.interface)
1584
1128
elif error[0] == errno.ENOPROTOOPT:
1585
logger.error("SO_BINDTODEVICE not available;"
1586
" cannot bind to interface %s",
1129
logger.error(u"SO_BINDTODEVICE not available;"
1130
u" cannot bind to interface %s",
1587
1131
self.interface)
1588
1132
else:
1589
1133
raise
1591
1135
if self.server_address[0] or self.server_address[1]:
1592
1136
if not self.server_address[0]:
1593
1137
if self.address_family == socket.AF_INET6:
1594
any_address = "::" # in6addr_any
1138
any_address = u"::" # in6addr_any
1595
1139
else:
1596
1140
any_address = socket.INADDR_ANY
1597
1141
self.server_address = (any_address,
1634
1178
def server_activate(self):
1635
1179
if self.enabled:
1636
1180
return socketserver.TCPServer.server_activate(self)
1637
1638
1181
def enable(self):
1639
1182
self.enabled = True
1640
1641
def add_pipe(self, parent_pipe, proc):
1183
def add_pipe(self, pipe):
1642
1184
# Call "handle_ipc" for both data and EOF events
1643
gobject.io_add_watch(parent_pipe.fileno(),
1644
gobject.IO_IN | gobject.IO_HUP,
1645
functools.partial(self.handle_ipc,
1646
parent_pipe =
1647
parent_pipe,
1648
proc = proc))
1649
1650
def handle_ipc(self, source, condition, parent_pipe=None,
1651
proc = None, client_object=None):
1185
gobject.io_add_watch(pipe, gobject.IO_IN | gobject.IO_HUP,
1186
self.handle_ipc)
1187
def handle_ipc(self, source, condition, file_objects={}):
1652
1188
condition_names = {
1653
gobject.IO_IN: "IN", # There is data to read.
1654
gobject.IO_OUT: "OUT", # Data can be written (without
1189
gobject.IO_IN: u"IN", # There is data to read.
1190
gobject.IO_OUT: u"OUT", # Data can be written (without
1655
1191
# blocking).
1656
gobject.IO_PRI: "PRI", # There is urgent data to read.
1657
gobject.IO_ERR: "ERR", # Error condition.
1658
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1192
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1193
gobject.IO_ERR: u"ERR", # Error condition.
1194
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1659
1195
# broken, usually for pipes and
1660
1196
# sockets).
1661
1197
}
1663
1199
for cond, name in
1664
1200
condition_names.iteritems()
1665
1201
if cond & condition)
1666
# error, or the other end of multiprocessing.Pipe has closed
1667
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
1668
# Wait for other process to exit
1669
proc.join()
1670
return False
1671
1672
# Read a request from the child
1673
request = parent_pipe.recv()
1674
command = request[0]
1675
1676
if command == 'init':
1677
fpr = request[1]
1678
address = request[2]
1679
1680
for c in self.clients:
1681
if c.fingerprint == fpr:
1682
client = c
1683
break
1684
else:
1685
logger.info("Client not found for fingerprint: %s, ad"
1686
"dress: %s", fpr, address)
1687
if self.use_dbus:
1688
# Emit D-Bus signal
1689
mandos_dbus_service.ClientNotFound(fpr,
1690
address[0])
1691
parent_pipe.send(False)
1692
return False
1693
1694
gobject.io_add_watch(parent_pipe.fileno(),
1695
gobject.IO_IN | gobject.IO_HUP,
1696
functools.partial(self.handle_ipc,
1697
parent_pipe =
1698
parent_pipe,
1699
proc = proc,
1700
client_object =
1701
client))
1702
parent_pipe.send(True)
1703
# remove the old hook in favor of the new above hook on
1704
# same fileno
1705
return False
1706
if command == 'funcall':
1707
funcname = request[1]
1708
args = request[2]
1709
kwargs = request[3]
1710
1711
parent_pipe.send(('data', getattr(client_object,
1712
funcname)(*args,
1713
**kwargs)))
1714
1715
if command == 'getattr':
1716
attrname = request[1]
1717
if callable(client_object.__getattribute__(attrname)):
1718
parent_pipe.send(('function',))
1719
else:
1720
parent_pipe.send(('data', client_object
1721
.__getattribute__(attrname)))
1722
1723
if command == 'setattr':
1724
attrname = request[1]
1725
value = request[2]
1726
setattr(client_object, attrname, value)
1727
1202
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1203
conditions_string)
1204
1205
# Turn the pipe file descriptor into a Python file object
1206
if source not in file_objects:
1207
file_objects[source] = os.fdopen(source, u"r", 1)
1208
1209
# Read a line from the file object
1210
cmdline = file_objects[source].readline()
1211
if not cmdline: # Empty line means end of file
1212
# close the IPC pipe
1213
file_objects[source].close()
1214
del file_objects[source]
1215
1216
# Stop calling this function
1217
return False
1218
1219
logger.debug(u"IPC command: %r", cmdline)
1220
1221
# Parse and act on command
1222
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1223
1224
if cmd == u"NOTFOUND":
1225
logger.warning(u"Client not found for fingerprint: %s",
1226
args)
1227
if self.use_dbus:
1228
# Emit D-Bus signal
1229
mandos_dbus_service.ClientNotFound(args)
1230
elif cmd == u"INVALID":
1231
for client in self.clients:
1232
if client.name == args:
1233
logger.warning(u"Client %s is invalid", args)
1234
if self.use_dbus:
1235
# Emit D-Bus signal
1236
client.Rejected()
1237
break
1238
else:
1239
logger.error(u"Unknown client %s is invalid", args)
1240
elif cmd == u"SENDING":
1241
for client in self.clients:
1242
if client.name == args:
1243
logger.info(u"Sending secret to %s", client.name)
1244
client.checked_ok()
1245
if self.use_dbus:
1246
# Emit D-Bus signal
1247
client.ReceivedSecret()
1248
break
1249
else:
1250
logger.error(u"Sending secret to unknown client %s",
1251
args)
1252
else:
1253
logger.error(u"Unknown IPC command: %r", cmdline)
1254
1255
# Keep calling this function
1728
1256
return True
1729
1257
1730
1258
1731
1259
def string_to_delta(interval):
1732
1260
"""Parse a string and return a datetime.timedelta
1733
1261
1734
>>> string_to_delta('7d')
1262
>>> string_to_delta(u'7d')
1735
1263
datetime.timedelta(7)
1736
>>> string_to_delta('60s')
1264
>>> string_to_delta(u'60s')
1737
1265
datetime.timedelta(0, 60)
1738
>>> string_to_delta('60m')
1266
>>> string_to_delta(u'60m')
1739
1267
datetime.timedelta(0, 3600)
1740
>>> string_to_delta('24h')
1268
>>> string_to_delta(u'24h')
1741
1269
datetime.timedelta(1)
1742
>>> string_to_delta('1w')
1270
>>> string_to_delta(u'1w')
1743
1271
datetime.timedelta(7)
1744
>>> string_to_delta('5m 30s')
1272
>>> string_to_delta(u'5m 30s')
1745
1273
datetime.timedelta(0, 330)
1746
1274
"""
1747
1275
timevalue = datetime.timedelta(0)
1749
1277
try:
1750
1278
suffix = unicode(s[-1])
1751
1279
value = int(s[:-1])
1752
if suffix == "d":
1280
if suffix == u"d":
1753
1281
delta = datetime.timedelta(value)
1754
elif suffix == "s":
1282
elif suffix == u"s":
1755
1283
delta = datetime.timedelta(0, value)
1756
elif suffix == "m":
1284
elif suffix == u"m":
1757
1285
delta = datetime.timedelta(0, 0, 0, 0, value)
1758
elif suffix == "h":
1286
elif suffix == u"h":
1759
1287
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1760
elif suffix == "w":
1288
elif suffix == u"w":
1761
1289
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1762
1290
else:
1763
raise ValueError("Unknown suffix %r" % suffix)
1764
except (ValueError, IndexError) as e:
1765
raise ValueError(*(e.args))
1291
raise ValueError
1292
except (ValueError, IndexError):
1293
raise ValueError
1766
1294
timevalue += delta
1767
1295
return timevalue
1768
1296
1774
1302
global if_nametoindex
1775
1303
try:
1776
1304
if_nametoindex = (ctypes.cdll.LoadLibrary
1777
(ctypes.util.find_library("c"))
1305
(ctypes.util.find_library(u"c"))
1778
1306
.if_nametoindex)
1779
1307
except (OSError, AttributeError):
1780
logger.warning("Doing if_nametoindex the hard way")
1308
logger.warning(u"Doing if_nametoindex the hard way")
1781
1309
def if_nametoindex(interface):
1782
1310
"Get an interface index the hard way, i.e. using fcntl()"
1783
1311
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1784
with contextlib.closing(socket.socket()) as s:
1312
with closing(socket.socket()) as s:
1785
1313
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1786
struct.pack(str("16s16x"),
1314
struct.pack(str(u"16s16x"),
1787
1315
interface))
1788
interface_index = struct.unpack(str("I"),
1316
interface_index = struct.unpack(str(u"I"),
1789
1317
ifreq[16:20])[0]
1790
1318
return interface_index
1791
1319
return if_nametoindex(interface)
1799
1327
sys.exit()
1800
1328
os.setsid()
1801
1329
if not nochdir:
1802
os.chdir("/")
1330
os.chdir(u"/")
1803
1331
if os.fork():
1804
1332
sys.exit()
1805
1333
if not noclose:
1807
1335
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1808
1336
if not stat.S_ISCHR(os.fstat(null).st_mode):
1809
1337
raise OSError(errno.ENODEV,
1810
"%s not a character device"
1811
% os.path.devnull)
1338
u"/dev/null not a character device")
1812
1339
os.dup2(null, sys.stdin.fileno())
1813
1340
os.dup2(null, sys.stdout.fileno())
1814
1341
os.dup2(null, sys.stderr.fileno())
1821
1348
##################################################################
1822
1349
# Parsing of options, both command line and config file
1823
1350
1824
parser = argparse.ArgumentParser()
1825
parser.add_argument("-v", "--version", action="version",
1826
version = "%%(prog)s %s" % version,
1827
help="show version number and exit")
1828
parser.add_argument("-i", "--interface", metavar="IF",
1829
help="Bind to interface IF")
1830
parser.add_argument("-a", "--address",
1831
help="Address to listen for requests on")
1832
parser.add_argument("-p", "--port", type=int,
1833
help="Port number to receive requests on")
1834
parser.add_argument("--check", action="store_true",
1835
help="Run self-test")
1836
parser.add_argument("--debug", action="store_true",
1837
help="Debug mode; run in foreground and log"
1838
" to terminal")
1839
parser.add_argument("--debuglevel", metavar="LEVEL",
1840
help="Debug level for stdout output")
1841
parser.add_argument("--priority", help="GnuTLS"
1842
" priority string (see GnuTLS documentation)")
1843
parser.add_argument("--servicename",
1844
metavar="NAME", help="Zeroconf service name")
1845
parser.add_argument("--configdir",
1846
default="/etc/mandos", metavar="DIR",
1847
help="Directory to search for configuration"
1848
" files")
1849
parser.add_argument("--no-dbus", action="store_false",
1850
dest="use_dbus", help="Do not provide D-Bus"
1851
" system bus interface")
1852
parser.add_argument("--no-ipv6", action="store_false",
1853
dest="use_ipv6", help="Do not use IPv6")
1854
options = parser.parse_args()
1351
parser = optparse.OptionParser(version = "%%prog %s" % version)
1352
parser.add_option("-i", u"--interface", type=u"string",
1353
metavar="IF", help=u"Bind to interface IF")
1354
parser.add_option("-a", u"--address", type=u"string",
1355
help=u"Address to listen for requests on")
1356
parser.add_option("-p", u"--port", type=u"int",
1357
help=u"Port number to receive requests on")
1358
parser.add_option("--check", action=u"store_true",
1359
help=u"Run self-test")
1360
parser.add_option("--debug", action=u"store_true",
1361
help=u"Debug mode; run in foreground and log to"
1362
u" terminal")
1363
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1364
u" priority string (see GnuTLS documentation)")
1365
parser.add_option("--servicename", type=u"string",
1366
metavar=u"NAME", help=u"Zeroconf service name")
1367
parser.add_option("--configdir", type=u"string",
1368
default=u"/etc/mandos", metavar=u"DIR",
1369
help=u"Directory to search for configuration"
1370
u" files")
1371
parser.add_option("--no-dbus", action=u"store_false",
1372
dest=u"use_dbus", help=u"Do not provide D-Bus"
1373
u" system bus interface")
1374
parser.add_option("--no-ipv6", action=u"store_false",
1375
dest=u"use_ipv6", help=u"Do not use IPv6")
1376
options = parser.parse_args()[0]
1855
1377
1856
1378
if options.check:
1857
1379
import doctest
1859
1381
sys.exit()
1860
1382
1861
1383
# Default values for config file for server-global settings
1862
server_defaults = { "interface": "",
1863
"address": "",
1864
"port": "",
1865
"debug": "False",
1866
"priority":
1867
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1868
"servicename": "Mandos",
1869
"use_dbus": "True",
1870
"use_ipv6": "True",
1871
"debuglevel": "",
1384
server_defaults = { u"interface": u"",
1385
u"address": u"",
1386
u"port": u"",
1387
u"debug": u"False",
1388
u"priority":
1389
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1390
u"servicename": u"Mandos",
1391
u"use_dbus": u"True",
1392
u"use_ipv6": u"True",
1872
1393
}
1873
1394
1874
1395
# Parse config file for server-global settings
1875
1396
server_config = configparser.SafeConfigParser(server_defaults)
1876
1397
del server_defaults
1877
1398
server_config.read(os.path.join(options.configdir,
1878
"mandos.conf"))
1399
u"mandos.conf"))
1879
1400
# Convert the SafeConfigParser object to a dict
1880
1401
server_settings = server_config.defaults()
1881
1402
# Use the appropriate methods on the non-string config options
1882
for option in ("debug", "use_dbus", "use_ipv6"):
1883
server_settings[option] = server_config.getboolean("DEFAULT",
1403
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1404
server_settings[option] = server_config.getboolean(u"DEFAULT",
1884
1405
option)
1885
1406
if server_settings["port"]:
1886
server_settings["port"] = server_config.getint("DEFAULT",
1887
"port")
1407
server_settings["port"] = server_config.getint(u"DEFAULT",
1408
u"port")
1888
1409
del server_config
1889
1410
1890
1411
# Override the settings from the config file with command line
1891
1412
# options, if set.
1892
for option in ("interface", "address", "port", "debug",
1893
"priority", "servicename", "configdir",
1894
"use_dbus", "use_ipv6", "debuglevel"):
1413
for option in (u"interface", u"address", u"port", u"debug",
1414
u"priority", u"servicename", u"configdir",
1415
u"use_dbus", u"use_ipv6"):
1895
1416
value = getattr(options, option)
1896
1417
if value is not None:
1897
1418
server_settings[option] = value
1905
1426
##################################################################
1906
1427
1907
1428
# For convenience
1908
debug = server_settings["debug"]
1909
debuglevel = server_settings["debuglevel"]
1910
use_dbus = server_settings["use_dbus"]
1911
use_ipv6 = server_settings["use_ipv6"]
1912
1913
if server_settings["servicename"] != "Mandos":
1429
debug = server_settings[u"debug"]
1430
use_dbus = server_settings[u"use_dbus"]
1431
use_ipv6 = server_settings[u"use_ipv6"]
1432
1433
if not debug:
1434
syslogger.setLevel(logging.WARNING)
1435
console.setLevel(logging.WARNING)
1436
1437
if server_settings[u"servicename"] != u"Mandos":
1914
1438
syslogger.setFormatter(logging.Formatter
1915
('Mandos (%s) [%%(process)d]:'
1916
' %%(levelname)s: %%(message)s'
1917
% server_settings["servicename"]))
1439
(u'Mandos (%s) [%%(process)d]:'
1440
u' %%(levelname)s: %%(message)s'
1441
% server_settings[u"servicename"]))
1918
1442
1919
1443
# Parse config file with clients
1920
client_defaults = { "timeout": "5m",
1921
"extended_timeout": "15m",
1922
"interval": "2m",
1923
"checker": "fping -q -- %%(host)s",
1924
"host": "",
1925
"approval_delay": "0s",
1926
"approval_duration": "1s",
1444
client_defaults = { u"timeout": u"1h",
1445
u"interval": u"5m",
1446
u"checker": u"fping -q -- %%(host)s",
1447
u"host": u"",
1927
1448
}
1928
1449
client_config = configparser.SafeConfigParser(client_defaults)
1929
client_config.read(os.path.join(server_settings["configdir"],
1930
"clients.conf"))
1450
client_config.read(os.path.join(server_settings[u"configdir"],
1451
u"clients.conf"))
1931
1452
1932
1453
global mandos_dbus_service
1933
1454
mandos_dbus_service = None
1934
1455
1935
tcp_server = MandosServer((server_settings["address"],
1936
server_settings["port"]),
1456
tcp_server = MandosServer((server_settings[u"address"],
1457
server_settings[u"port"]),
1937
1458
ClientHandler,
1938
interface=(server_settings["interface"]
1939
or None),
1459
interface=server_settings[u"interface"],
1940
1460
use_ipv6=use_ipv6,
1941
1461
gnutls_priority=
1942
server_settings["priority"],
1462
server_settings[u"priority"],
1943
1463
use_dbus=use_dbus)
1944
if not debug:
1945
pidfilename = "/var/run/mandos.pid"
1946
try:
1947
pidfile = open(pidfilename, "w")
1948
except IOError:
1949
logger.error("Could not open file %r", pidfilename)
1464
pidfilename = u"/var/run/mandos.pid"
1465
try:
1466
pidfile = open(pidfilename, u"w")
1467
except IOError:
1468
logger.error(u"Could not open file %r", pidfilename)
1950
1469
1951
1470
try:
1952
uid = pwd.getpwnam("_mandos").pw_uid
1953
gid = pwd.getpwnam("_mandos").pw_gid
1471
uid = pwd.getpwnam(u"_mandos").pw_uid
1472
gid = pwd.getpwnam(u"_mandos").pw_gid
1954
1473
except KeyError:
1955
1474
try:
1956
uid = pwd.getpwnam("mandos").pw_uid
1957
gid = pwd.getpwnam("mandos").pw_gid
1475
uid = pwd.getpwnam(u"mandos").pw_uid
1476
gid = pwd.getpwnam(u"mandos").pw_gid
1958
1477
except KeyError:
1959
1478
try:
1960
uid = pwd.getpwnam("nobody").pw_uid
1961
gid = pwd.getpwnam("nobody").pw_gid
1479
uid = pwd.getpwnam(u"nobody").pw_uid
1480
gid = pwd.getpwnam(u"nobody").pw_gid
1962
1481
except KeyError:
1963
1482
uid = 65534
1964
1483
gid = 65534
1965
1484
try:
1966
1485
os.setgid(gid)
1967
1486
os.setuid(uid)
1968
except OSError as error:
1487
except OSError, error:
1969
1488
if error[0] != errno.EPERM:
1970
1489
raise error
1971
1490
1972
if not debug and not debuglevel:
1973
syslogger.setLevel(logging.WARNING)
1974
console.setLevel(logging.WARNING)
1975
if debuglevel:
1976
level = getattr(logging, debuglevel.upper())
1977
syslogger.setLevel(level)
1978
console.setLevel(level)
1979
1491
# Enable all possible GnuTLS debugging
1980
1492
if debug:
1981
# Enable all possible GnuTLS debugging
1982
1983
1493
# "Use a log level over 10 to enable all debugging options."
1984
1494
# - GnuTLS manual
1985
1495
gnutls.library.functions.gnutls_global_set_log_level(11)
1986
1496
1987
1497
@gnutls.library.types.gnutls_log_func
1988
1498
def debug_gnutls(level, string):
1989
logger.debug("GnuTLS: %s", string[:-1])
1499
logger.debug(u"GnuTLS: %s", string[:-1])
1990
1500
1991
1501
(gnutls.library.functions
1992
1502
.gnutls_global_set_log_function(debug_gnutls))
1993
1994
# Redirect stdin so all checkers get /dev/null
1995
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1996
os.dup2(null, sys.stdin.fileno())
1997
if null > 2:
1998
os.close(null)
1999
else:
2000
# No console logging
2001
logger.removeHandler(console)
2002
2003
# Need to fork before connecting to D-Bus
2004
if not debug:
2005
# Close all input and output, do double fork, etc.
2006
daemon()
2007
1503
2008
1504
global main_loop
2009
1505
# From the Avahi example code
2012
1508
bus = dbus.SystemBus()
2013
1509
# End of Avahi example code
2014
1510
if use_dbus:
2015
try:
2016
bus_name = dbus.service.BusName("se.recompile.Mandos",
2017
bus, do_not_queue=True)
2018
old_bus_name = (dbus.service.BusName
2019
("se.bsnet.fukt.Mandos", bus,
2020
do_not_queue=True))
2021
except dbus.exceptions.NameExistsException as e:
2022
logger.error(unicode(e) + ", disabling D-Bus")
2023
use_dbus = False
2024
server_settings["use_dbus"] = False
2025
tcp_server.use_dbus = False
1511
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos", bus)
2026
1512
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2027
service = AvahiService(name = server_settings["servicename"],
2028
servicetype = "_mandos._tcp",
1513
service = AvahiService(name = server_settings[u"servicename"],
1514
servicetype = u"_mandos._tcp",
2029
1515
protocol = protocol, bus = bus)
2030
1516
if server_settings["interface"]:
2031
1517
service.interface = (if_nametoindex
2032
(str(server_settings["interface"])))
2033
2034
global multiprocessing_manager
2035
multiprocessing_manager = multiprocessing.Manager()
1518
(str(server_settings[u"interface"])))
2036
1519
2037
1520
client_class = Client
2038
1521
if use_dbus:
2039
client_class = functools.partial(ClientDBusTransitional,
2040
bus = bus)
2041
def client_config_items(config, section):
2042
special_settings = {
2043
"approved_by_default":
2044
lambda: config.getboolean(section,
2045
"approved_by_default"),
2046
}
2047
for name, value in config.items(section):
2048
try:
2049
yield (name, special_settings[name]())
2050
except KeyError:
2051
yield (name, value)
2052
1522
client_class = functools.partial(ClientDBus, bus = bus)
2053
1523
tcp_server.clients.update(set(
2054
1524
client_class(name = section,
2055
config= dict(client_config_items(
2056
client_config, section)))
1525
config= dict(client_config.items(section)))
2057
1526
for section in client_config.sections()))
2058
1527
if not tcp_server.clients:
2059
logger.warning("No clients defined")
1528
logger.warning(u"No clients defined")
1529
1530
if debug:
1531
# Redirect stdin so all checkers get /dev/null
1532
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1533
os.dup2(null, sys.stdin.fileno())
1534
if null > 2:
1535
os.close(null)
1536
else:
1537
# No console logging
1538
logger.removeHandler(console)
1539
# Close all input and output, do double fork, etc.
1540
daemon()
1541
1542
try:
1543
with closing(pidfile):
1544
pid = os.getpid()
1545
pidfile.write(str(pid) + "\n")
1546
del pidfile
1547
except IOError:
1548
logger.error(u"Could not write to file %r with PID %d",
1549
pidfilename, pid)
1550
except NameError:
1551
# "pidfile" was never created
1552
pass
1553
del pidfilename
1554
1555
def cleanup():
1556
"Cleanup function; run on exit"
1557
service.cleanup()
2060
1558
1559
while tcp_server.clients:
1560
client = tcp_server.clients.pop()
1561
client.disable_hook = None
1562
client.disable()
1563
1564
atexit.register(cleanup)
1565
2061
1566
if not debug:
2062
try:
2063
with pidfile:
2064
pid = os.getpid()
2065
pidfile.write(str(pid) + "\n".encode("utf-8"))
2066
del pidfile
2067
except IOError:
2068
logger.error("Could not write to file %r with PID %d",
2069
pidfilename, pid)
2070
except NameError:
2071
# "pidfile" was never created
2072
pass
2073
del pidfilename
2074
2075
1567
signal.signal(signal.SIGINT, signal.SIG_IGN)
2076
2077
1568
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2078
1569
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2079
1570
2081
1572
class MandosDBusService(dbus.service.Object):
2082
1573
"""A D-Bus proxy object"""
2083
1574
def __init__(self):
2084
dbus.service.Object.__init__(self, bus, "/")
2085
_interface = "se.recompile.Mandos"
2086
2087
@dbus.service.signal(_interface, signature="o")
2088
def ClientAdded(self, objpath):
2089
"D-Bus signal"
2090
pass
2091
2092
@dbus.service.signal(_interface, signature="ss")
2093
def ClientNotFound(self, fingerprint, address):
2094
"D-Bus signal"
2095
pass
2096
2097
@dbus.service.signal(_interface, signature="os")
1575
dbus.service.Object.__init__(self, bus, u"/")
1576
_interface = u"se.bsnet.fukt.Mandos"
1577
1578
@dbus.service.signal(_interface, signature=u"oa{sv}")
1579
def ClientAdded(self, objpath, properties):
1580
"D-Bus signal"
1581
pass
1582
1583
@dbus.service.signal(_interface, signature=u"s")
1584
def ClientNotFound(self, fingerprint):
1585
"D-Bus signal"
1586
pass
1587
1588
@dbus.service.signal(_interface, signature=u"os")
2098
1589
def ClientRemoved(self, objpath, name):
2099
1590
"D-Bus signal"
2100
1591
pass
2101
1592
2102
@dbus.service.method(_interface, out_signature="ao")
1593
@dbus.service.method(_interface, out_signature=u"ao")
2103
1594
def GetAllClients(self):
2104
1595
"D-Bus method"
2105
1596
return dbus.Array(c.dbus_object_path
2106
1597
for c in tcp_server.clients)
2107
1598
2108
1599
@dbus.service.method(_interface,
2109
out_signature="a{oa{sv}}")
1600
out_signature=u"a{oa{sv}}")
2110
1601
def GetAllClientsWithProperties(self):
2111
1602
"D-Bus method"
2112
1603
return dbus.Dictionary(
2113
((c.dbus_object_path, c.GetAll(""))
1604
((c.dbus_object_path, c.GetAll(u""))
2114
1605
for c in tcp_server.clients),
2115
signature="oa{sv}")
1606
signature=u"oa{sv}")
2116
1607
2117
@dbus.service.method(_interface, in_signature="o")
1608
@dbus.service.method(_interface, in_signature=u"o")
2118
1609
def RemoveClient(self, object_path):
2119
1610
"D-Bus method"
2120
1611
for c in tcp_server.clients:
2122
1613
tcp_server.clients.remove(c)
2123
1614
c.remove_from_connection()
2124
1615
# Don't signal anything except ClientRemoved
2125
c.disable(quiet=True)
1616
c.disable(signal=False)
2126
1617
# Emit D-Bus signal
2127
1618
self.ClientRemoved(object_path, c.name)
2128
1619
return
2129
raise KeyError(object_path)
1620
raise KeyError
2130
1621
2131
1622
del _interface
2132
1623
2133
class MandosDBusServiceTransitional(MandosDBusService):
2134
__metaclass__ = AlternateDBusNamesMetaclass
2135
mandos_dbus_service = MandosDBusServiceTransitional()
2136
2137
def cleanup():
2138
"Cleanup function; run on exit"
2139
service.cleanup()
2140
2141
multiprocessing.active_children()
2142
while tcp_server.clients:
2143
client = tcp_server.clients.pop()
2144
if use_dbus:
2145
client.remove_from_connection()
2146
client.disable_hook = None
2147
# Don't signal anything except ClientRemoved
2148
client.disable(quiet=True)
2149
if use_dbus:
2150
# Emit D-Bus signal
2151
mandos_dbus_service.ClientRemoved(client
2152
.dbus_object_path,
2153
client.name)
2154
2155
atexit.register(cleanup)
1624
mandos_dbus_service = MandosDBusService()
2156
1625
2157
1626
for client in tcp_server.clients:
2158
1627
if use_dbus:
2159
1628
# Emit D-Bus signal
2160
mandos_dbus_service.ClientAdded(client.dbus_object_path)
1629
mandos_dbus_service.ClientAdded(client.dbus_object_path,
1630
client.GetAll(u""))
2161
1631
client.enable()
2162
1632
2163
1633
tcp_server.enable()
2166
1636
# Find out what port we got
2167
1637
service.port = tcp_server.socket.getsockname()[1]
2168
1638
if use_ipv6:
2169
logger.info("Now listening on address %r, port %d,"
1639
logger.info(u"Now listening on address %r, port %d,"
2170
1640
" flowinfo %d, scope_id %d"
2171
1641
% tcp_server.socket.getsockname())
2172
1642
else: # IPv4
2173
logger.info("Now listening on address %r, port %d"
1643
logger.info(u"Now listening on address %r, port %d"
2174
1644
% tcp_server.socket.getsockname())
2175
1645
2176
1646
#service.interface = tcp_server.socket.getsockname()[3]
2179
1649
# From the Avahi example code
2180
1650
try:
2181
1651
service.activate()
2182
except dbus.exceptions.DBusException as error:
2183
logger.critical("DBusException: %s", error)
2184
cleanup()
1652
except dbus.exceptions.DBusException, error:
1653
logger.critical(u"DBusException: %s", error)
2185
1654
sys.exit(1)
2186
1655
# End of Avahi example code
2187
1656
2190
1659
(tcp_server.handle_request
2191
1660
(*args[2:], **kwargs) or True))
2192
1661
2193
logger.debug("Starting main loop")
1662
logger.debug(u"Starting main loop")
2194
1663
main_loop.run()
2195
except AvahiError as error:
2196
logger.critical("AvahiError: %s", error)
2197
cleanup()
1664
except AvahiError, error:
1665
logger.critical(u"AvahiError: %s", error)
2198
1666
sys.exit(1)
2199
1667
except KeyboardInterrupt:
2200
1668
if debug:
2201
print("", file=sys.stderr)
2202
logger.debug("Server received KeyboardInterrupt")
2203
logger.debug("Server exiting")
2204
# Must run before the D-Bus bus name gets deregistered
2205
cleanup()
2206
1669
print >> sys.stderr
1670
logger.debug(u"Server received KeyboardInterrupt")
1671
logger.debug(u"Server exiting")
2207
1672
2208
1673
if __name__ == '__main__':
2209
1674
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0