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- Committer: Teddy Hogeborn
- Date: 2011-11-29 18:19:31 UTC
- mto: (237.15.13 mandos-client-network-hooks)
- mto: This revision was merged to the branch mainline in revision 290.
- Revision ID: teddy@recompile.se-20111129181931-vctlij1omtu1qbnx
* initramfs-tools-hook: Set DEVICE for network hooks.
- files added:
- DBUS-API
- debian/source
- network-hooks.d
- files modified:
- .bzrignore
added
removed
mandos
11
11
# "AvahiService" class, and some lines in "main".
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#
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# Everything else is
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# Copyright © 2008,2009 Teddy Hogeborn
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# Copyright © 2008,2009 Björn Påhlsson
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# Copyright © 2008-2011 Teddy Hogeborn
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# Copyright © 2008-2011 Björn Påhlsson
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# along with this program. If not, see
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# <http://www.gnu.org/licenses/>.
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#
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# Contact the authors at <mandos@fukt.bsnet.se>.
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# Contact the authors at <mandos@recompile.se>.
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#
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from __future__ import division, with_statement, absolute_import
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from __future__ import (division, absolute_import, print_function,
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unicode_literals)
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import SocketServer as socketserver
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import socket
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import optparse
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import argparse
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import datetime
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import errno
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import gnutls.crypto
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import logging
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import logging.handlers
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import pwd
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from contextlib import closing
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import contextlib
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import struct
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import fcntl
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import functools
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import cPickle as pickle
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import multiprocessing
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import types
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import dbus
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import dbus.service
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SO_BINDTODEVICE = None
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version = "1.0.12"
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version = "1.4.1"
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logger = logging.Logger(u'mandos')
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#logger = logging.getLogger('mandos')
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logger = logging.Logger('mandos')
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syslogger = (logging.handlers.SysLogHandler
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(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
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address = "/dev/log"))
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address = str("/dev/log")))
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syslogger.setFormatter(logging.Formatter
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(u'Mandos [%(process)d]: %(levelname)s:'
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u' %(message)s'))
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('Mandos [%(process)d]: %(levelname)s:'
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' %(message)s'))
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logger.addHandler(syslogger)
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console = logging.StreamHandler()
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console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
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u' %(levelname)s:'
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u' %(message)s'))
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console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
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' %(levelname)s:'
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' %(message)s'))
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logger.addHandler(console)
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class AvahiError(Exception):
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Attributes:
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interface: integer; avahi.IF_UNSPEC or an interface index.
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Used to optionally bind to the specified interface.
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name: string; Example: u'Mandos'
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type: string; Example: u'_mandos._tcp'.
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name: string; Example: 'Mandos'
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type: string; Example: '_mandos._tcp'.
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See <http://www.dns-sd.org/ServiceTypes.html>
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port: integer; what port to announce
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TXT: list of strings; TXT record for the service
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"""
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def __init__(self, interface = avahi.IF_UNSPEC, name = None,
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servicetype = None, port = None, TXT = None,
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domain = u"", host = u"", max_renames = 32768,
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domain = "", host = "", max_renames = 32768,
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protocol = avahi.PROTO_UNSPEC, bus = None):
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self.interface = interface
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self.name = name
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self.group = None # our entry group
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self.server = None
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self.bus = bus
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self.entry_group_state_changed_match = None
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def rename(self):
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"""Derived from the Avahi example code"""
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if self.rename_count >= self.max_renames:
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logger.critical(u"No suitable Zeroconf service name found"
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u" after %i retries, exiting.",
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logger.critical("No suitable Zeroconf service name found"
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" after %i retries, exiting.",
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self.rename_count)
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raise AvahiServiceError(u"Too many renames")
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self.name = self.server.GetAlternativeServiceName(self.name)
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logger.info(u"Changing Zeroconf service name to %r ...",
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unicode(self.name))
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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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syslogger.setFormatter(logging.Formatter
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(u'Mandos (%s) [%%(process)d]:'
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u' %%(levelname)s: %%(message)s'
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('Mandos (%s) [%%(process)d]:'
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' %%(levelname)s: %%(message)s'
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% self.name))
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self.remove()
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self.add()
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try:
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self.add()
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except dbus.exceptions.DBusException as error:
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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.rename_count += 1
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def remove(self):
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"""Derived from the Avahi example code"""
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if self.entry_group_state_changed_match is not None:
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self.entry_group_state_changed_match.remove()
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self.entry_group_state_changed_match = None
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if self.group is not None:
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self.group.Reset()
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def add(self):
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"""Derived from the Avahi example code"""
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self.remove()
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if self.group is None:
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self.group = dbus.Interface(
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self.bus.get_object(avahi.DBUS_NAME,
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self.server.EntryGroupNew()),
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avahi.DBUS_INTERFACE_ENTRY_GROUP)
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self.group.connect_to_signal('StateChanged',
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self
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.entry_group_state_changed)
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logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
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self.entry_group_state_changed_match = (
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self.group.connect_to_signal(
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'StateChanged', self .entry_group_state_changed))
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logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
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self.name, self.type)
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self.group.AddService(
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self.interface,
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self.group.Commit()
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def entry_group_state_changed(self, state, error):
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"""Derived from the Avahi example code"""
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logger.debug(u"Avahi state change: %i", state)
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logger.debug("Avahi entry group state change: %i", state)
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if state == avahi.ENTRY_GROUP_ESTABLISHED:
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logger.debug(u"Zeroconf service established.")
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logger.debug("Zeroconf service established.")
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elif state == avahi.ENTRY_GROUP_COLLISION:
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logger.warning(u"Zeroconf service name collision.")
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logger.info("Zeroconf service name collision.")
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self.rename()
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elif state == avahi.ENTRY_GROUP_FAILURE:
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logger.critical(u"Avahi: Error in group state changed %s",
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logger.critical("Avahi: Error in group state changed %s",
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unicode(error))
204
raise AvahiGroupError(u"State changed: %s"
220
raise AvahiGroupError("State changed: %s"
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% unicode(error))
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def cleanup(self):
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"""Derived from the Avahi example code"""
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if self.group is not None:
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self.group.Free()
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try:
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self.group.Free()
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except (dbus.exceptions.UnknownMethodException,
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dbus.exceptions.DBusException) as e:
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pass
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self.group = None
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def server_state_changed(self, state):
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self.remove()
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def server_state_changed(self, state, error=None):
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"""Derived from the Avahi example code"""
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if state == avahi.SERVER_COLLISION:
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logger.error(u"Zeroconf server name collision")
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self.remove()
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logger.debug("Avahi server state change: %i", state)
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bad_states = { avahi.SERVER_INVALID:
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"Zeroconf server invalid",
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avahi.SERVER_REGISTERING: None,
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avahi.SERVER_COLLISION:
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"Zeroconf server name collision",
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avahi.SERVER_FAILURE:
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"Zeroconf server failure" }
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if state in bad_states:
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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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elif state == avahi.SERVER_RUNNING:
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self.add()
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else:
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if error is None:
253
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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avahi.DBUS_PATH_SERVER,
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follow_name_owner_changes=True),
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avahi.DBUS_INTERFACE_SERVER)
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self.server.connect_to_signal(u"StateChanged",
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self.server.connect_to_signal("StateChanged",
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self.server_state_changed)
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self.server_state_changed(self.server.GetState())
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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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name: string; from the config file, used in log messages and
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D-Bus identifiers
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fingerprint: string (40 or 32 hexadecimal digits); used to
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uniquely identify the client
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secret: bytestring; sent verbatim (over TLS) to client
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host: string; available for use by the checker command
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created: datetime.datetime(); (UTC) object creation
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last_enabled: datetime.datetime(); (UTC)
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enabled: bool()
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last_checked_ok: datetime.datetime(); (UTC) or None
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timeout: datetime.timedelta(); How long from last_checked_ok
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until this client is invalid
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interval: datetime.timedelta(); How often to start a new checker
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disable_hook: If set, called by disable() as disable_hook(self)
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_approved: bool(); 'None' if not yet approved/disapproved
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approval_delay: datetime.timedelta(); Time to wait for approval
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approval_duration: datetime.timedelta(); Duration of one approval
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checker: subprocess.Popen(); a running checker process used
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to see if the client lives.
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'None' if no process is running.
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checker_initiator_tag: a gobject event source tag, or None
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disable_initiator_tag: - '' -
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checker_callback_tag: - '' -
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checker_command: string; External command which is run to check if
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client lives. %() expansions are done at
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checker_callback_tag: a gobject event source tag, or None
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checker_command: string; External command which is run to check
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if client lives. %() expansions are done at
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runtime with vars(self) as dict, so that for
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instance %(name)s can be used in the command.
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checker_initiator_tag: a gobject event source tag, or None
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created: datetime.datetime(); (UTC) object creation
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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
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disabled, or None
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"""
260
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@staticmethod
262
def _timedelta_to_milliseconds(td):
263
"Convert a datetime.timedelta() to milliseconds"
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return ((td.days * 24 * 60 * 60 * 1000)
265
+ (td.seconds * 1000)
266
+ (td.microseconds // 1000))
314
runtime_expansions = ("approval_delay", "approval_duration",
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"created", "enabled", "fingerprint",
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"host", "interval", "last_checked_ok",
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"last_enabled", "name", "timeout")
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def timeout_milliseconds(self):
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"Return the 'timeout' attribute in milliseconds"
270
return self._timedelta_to_milliseconds(self.timeout)
321
return _timedelta_to_milliseconds(self.timeout)
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def extended_timeout_milliseconds(self):
324
"Return the 'extended_timeout' attribute in milliseconds"
325
return _timedelta_to_milliseconds(self.extended_timeout)
271
326
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def interval_milliseconds(self):
273
328
"Return the 'interval' attribute in milliseconds"
274
return self._timedelta_to_milliseconds(self.interval)
329
return _timedelta_to_milliseconds(self.interval)
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def approval_delay_milliseconds(self):
332
return _timedelta_to_milliseconds(self.approval_delay)
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333
276
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def __init__(self, name = None, disable_hook=None, config=None):
277
335
"""Note: the 'checker' key in 'config' sets the
280
338
self.name = name
281
339
if config is None:
282
340
config = {}
283
logger.debug(u"Creating client %r", self.name)
341
logger.debug("Creating client %r", self.name)
284
342
# Uppercase and remove spaces from fingerprint for later
285
343
# comparison purposes with return value from the fingerprint()
286
344
# function
287
self.fingerprint = (config[u"fingerprint"].upper()
288
.replace(u" ", u""))
289
logger.debug(u" Fingerprint: %s", self.fingerprint)
290
if u"secret" in config:
291
self.secret = config[u"secret"].decode(u"base64")
292
elif u"secfile" in config:
293
with closing(open(os.path.expanduser
294
(os.path.expandvars
295
(config[u"secfile"])),
296
"rb")) as secfile:
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:
297
354
self.secret = secfile.read()
298
355
else:
299
raise TypeError(u"No secret or secfile for client %s"
356
raise TypeError("No secret or secfile for client %s"
300
357
% self.name)
301
self.host = config.get(u"host", u"")
358
self.host = config.get("host", "")
302
359
self.created = datetime.datetime.utcnow()
303
360
self.enabled = False
361
self.last_approval_request = None
304
362
self.last_enabled = None
305
363
self.last_checked_ok = None
306
self.timeout = string_to_delta(config[u"timeout"])
307
self.interval = string_to_delta(config[u"interval"])
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"])
308
368
self.disable_hook = disable_hook
309
369
self.checker = None
310
370
self.checker_initiator_tag = None
311
371
self.disable_initiator_tag = None
372
self.expires = None
312
373
self.checker_callback_tag = None
313
self.checker_command = config[u"checker"]
374
self.checker_command = config["checker"]
314
375
self.current_checker_command = None
315
376
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()
316
393
317
394
def enable(self):
318
395
"""Start this client's checker and timeout hooks"""
319
if getattr(self, u"enabled", False):
396
if getattr(self, "enabled", False):
320
397
# Already enabled
321
398
return
322
self.last_enabled = datetime.datetime.utcnow()
399
self.send_changedstate()
323
400
# Schedule a new checker to be started an 'interval' from now,
324
401
# and every interval from then on.
325
402
self.checker_initiator_tag = (gobject.timeout_add
326
403
(self.interval_milliseconds(),
327
404
self.start_checker))
328
# Also start a new checker *right now*.
329
self.start_checker()
330
405
# Schedule a disable() when 'timeout' has passed
406
self.expires = datetime.datetime.utcnow() + self.timeout
331
407
self.disable_initiator_tag = (gobject.timeout_add
332
408
(self.timeout_milliseconds(),
333
409
self.disable))
334
410
self.enabled = True
411
self.last_enabled = datetime.datetime.utcnow()
412
# Also start a new checker *right now*.
413
self.start_checker()
335
414
336
def disable(self):
415
def disable(self, quiet=True):
337
416
"""Disable this client."""
338
417
if not getattr(self, "enabled", False):
339
418
return False
340
logger.info(u"Disabling client %s", self.name)
341
if getattr(self, u"disable_initiator_tag", 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):
342
424
gobject.source_remove(self.disable_initiator_tag)
343
425
self.disable_initiator_tag = None
344
if getattr(self, u"checker_initiator_tag", False):
426
self.expires = None
427
if getattr(self, "checker_initiator_tag", False):
345
428
gobject.source_remove(self.checker_initiator_tag)
346
429
self.checker_initiator_tag = None
347
430
self.stop_checker()
362
445
if os.WIFEXITED(condition):
363
446
exitstatus = os.WEXITSTATUS(condition)
364
447
if exitstatus == 0:
365
logger.info(u"Checker for %(name)s succeeded",
448
logger.info("Checker for %(name)s succeeded",
366
449
vars(self))
367
450
self.checked_ok()
368
451
else:
369
logger.info(u"Checker for %(name)s failed",
452
logger.info("Checker for %(name)s failed",
370
453
vars(self))
371
454
else:
372
logger.warning(u"Checker for %(name)s crashed?",
455
logger.warning("Checker for %(name)s crashed?",
373
456
vars(self))
374
457
375
def checked_ok(self):
458
def checked_ok(self, timeout=None):
376
459
"""Bump up the timeout for this client.
377
460
378
461
This should only be called when the client has been seen,
379
462
alive and well.
380
463
"""
464
if timeout is None:
465
timeout = self.timeout
381
466
self.last_checked_ok = datetime.datetime.utcnow()
382
gobject.source_remove(self.disable_initiator_tag)
383
self.disable_initiator_tag = (gobject.timeout_add
384
(self.timeout_milliseconds(),
385
self.disable))
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()
386
477
387
478
def start_checker(self):
388
479
"""Start a new checker subprocess if one is not running.
395
486
# client would inevitably timeout, since no checker would get
396
487
# a chance to run to completion. If we instead leave running
397
488
# checkers alone, the checker would have to take more time
398
# than 'timeout' for the client to be declared invalid, which
399
# is as it should be.
489
# than 'timeout' for the client to be disabled, which is as it
490
# should be.
400
491
401
492
# If a checker exists, make sure it is not a zombie
402
493
try:
403
494
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
404
except (AttributeError, OSError), error:
495
except (AttributeError, OSError) as error:
405
496
if (isinstance(error, OSError)
406
497
and error.errno != errno.ECHILD):
407
498
raise error
408
499
else:
409
500
if pid:
410
logger.warning(u"Checker was a zombie")
501
logger.warning("Checker was a zombie")
411
502
gobject.source_remove(self.checker_callback_tag)
412
503
self.checker_callback(pid, status,
413
504
self.current_checker_command)
418
509
command = self.checker_command % self.host
419
510
except TypeError:
420
511
# Escape attributes for the shell
421
escaped_attrs = dict((key,
422
re.escape(unicode(str(val),
423
errors=
424
u'replace')))
425
for key, val in
426
vars(self).iteritems())
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
427
520
try:
428
521
command = self.checker_command % escaped_attrs
429
except TypeError, error:
430
logger.error(u'Could not format string "%s":'
431
u' %s', self.checker_command, error)
522
except TypeError as error:
523
logger.error('Could not format string "%s":'
524
' %s', self.checker_command, error)
432
525
return True # Try again later
433
526
self.current_checker_command = command
434
527
try:
435
logger.info(u"Starting checker %r for %s",
528
logger.info("Starting checker %r for %s",
436
529
command, self.name)
437
530
# We don't need to redirect stdout and stderr, since
438
531
# in normal mode, that is already done by daemon(),
440
533
# always replaced by /dev/null.)
441
534
self.checker = subprocess.Popen(command,
442
535
close_fds=True,
443
shell=True, cwd=u"/")
536
shell=True, cwd="/")
444
537
self.checker_callback_tag = (gobject.child_watch_add
445
538
(self.checker.pid,
446
539
self.checker_callback,
451
544
if pid:
452
545
gobject.source_remove(self.checker_callback_tag)
453
546
self.checker_callback(pid, status, command)
454
except OSError, error:
455
logger.error(u"Failed to start subprocess: %s",
547
except OSError as error:
548
logger.error("Failed to start subprocess: %s",
456
549
error)
457
550
# Re-run this periodically if run by gobject.timeout_add
458
551
return True
462
555
if self.checker_callback_tag:
463
556
gobject.source_remove(self.checker_callback_tag)
464
557
self.checker_callback_tag = None
465
if getattr(self, u"checker", None) is None:
558
if getattr(self, "checker", None) is None:
466
559
return
467
logger.debug(u"Stopping checker for %(name)s", vars(self))
560
logger.debug("Stopping checker for %(name)s", vars(self))
468
561
try:
469
562
os.kill(self.checker.pid, signal.SIGTERM)
470
#os.sleep(0.5)
563
#time.sleep(0.5)
471
564
#if self.checker.poll() is None:
472
565
# os.kill(self.checker.pid, signal.SIGKILL)
473
except OSError, error:
566
except OSError as error:
474
567
if error.errno != errno.ESRCH: # No such process
475
568
raise
476
569
self.checker = None
477
478
def still_valid(self):
479
"""Has the timeout not yet passed for this client?"""
480
if not getattr(self, u"enabled", False):
481
return False
482
now = datetime.datetime.utcnow()
483
if self.last_checked_ok is None:
484
return now < (self.created + self.timeout)
485
else:
486
return now < (self.last_checked_ok + self.timeout)
487
488
489
def dbus_service_property(dbus_interface, signature=u"v",
490
access=u"readwrite", byte_arrays=False):
570
571
572
def dbus_service_property(dbus_interface, signature="v",
573
access="readwrite", byte_arrays=False):
491
574
"""Decorators for marking methods of a DBusObjectWithProperties to
492
575
become properties on the D-Bus.
493
576
498
581
dbus.service.method, except there is only "signature", since the
499
582
type from Get() and the type sent to Set() is the same.
500
583
"""
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)
501
589
def decorator(func):
502
590
func._dbus_is_property = True
503
591
func._dbus_interface = dbus_interface
504
592
func._dbus_signature = signature
505
593
func._dbus_access = access
506
594
func._dbus_name = func.__name__
507
if func._dbus_name.endswith(u"_dbus_property"):
595
if func._dbus_name.endswith("_dbus_property"):
508
596
func._dbus_name = func._dbus_name[:-14]
509
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
597
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
510
598
return func
511
599
return decorator
512
600
532
620
533
621
class DBusObjectWithProperties(dbus.service.Object):
534
622
"""A D-Bus object with properties.
535
623
536
624
Classes inheriting from this can use the dbus_service_property
537
625
decorator to expose methods as D-Bus properties. It exposes the
538
626
standard Get(), Set(), and GetAll() methods on the D-Bus.
540
628
541
629
@staticmethod
542
630
def _is_dbus_property(obj):
543
return getattr(obj, u"_dbus_is_property", False)
631
return getattr(obj, "_dbus_is_property", False)
544
632
545
633
def _get_all_dbus_properties(self):
546
634
"""Returns a generator of (name, attribute) pairs
547
635
"""
548
return ((prop._dbus_name, prop)
636
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
637
for cls in self.__class__.__mro__
549
638
for name, prop in
550
inspect.getmembers(self, self._is_dbus_property))
639
inspect.getmembers(cls, self._is_dbus_property))
551
640
552
641
def _get_dbus_property(self, interface_name, property_name):
553
642
"""Returns a bound method if one exists which is a D-Bus
554
643
property with the specified name and interface.
555
644
"""
556
for name in (property_name,
557
property_name + u"_dbus_property"):
558
prop = getattr(self, name, None)
559
if (prop is None
560
or not self._is_dbus_property(prop)
561
or prop._dbus_name != property_name
562
or (interface_name and prop._dbus_interface
563
and interface_name != prop._dbus_interface)):
564
continue
565
return prop
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
566
652
# No such property
567
raise DBusPropertyNotFound(self.dbus_object_path + u":"
568
+ interface_name + u"."
653
raise DBusPropertyNotFound(self.dbus_object_path + ":"
654
+ interface_name + "."
569
655
+ property_name)
570
656
571
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
572
out_signature=u"v")
657
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
658
out_signature="v")
573
659
def Get(self, interface_name, property_name):
574
660
"""Standard D-Bus property Get() method, see D-Bus standard.
575
661
"""
576
662
prop = self._get_dbus_property(interface_name, property_name)
577
if prop._dbus_access == u"write":
663
if prop._dbus_access == "write":
578
664
raise DBusPropertyAccessException(property_name)
579
665
value = prop()
580
if not hasattr(value, u"variant_level"):
666
if not hasattr(value, "variant_level"):
581
667
return value
582
668
return type(value)(value, variant_level=value.variant_level+1)
583
669
584
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
670
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
585
671
def Set(self, interface_name, property_name, value):
586
672
"""Standard D-Bus property Set() method, see D-Bus standard.
587
673
"""
588
674
prop = self._get_dbus_property(interface_name, property_name)
589
if prop._dbus_access == u"read":
675
if prop._dbus_access == "read":
590
676
raise DBusPropertyAccessException(property_name)
591
if prop._dbus_get_args_options[u"byte_arrays"]:
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
592
682
value = dbus.ByteArray(''.join(unichr(byte)
593
683
for byte in value))
594
684
prop(value)
595
685
596
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
597
out_signature=u"a{sv}")
686
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
687
out_signature="a{sv}")
598
688
def GetAll(self, interface_name):
599
689
"""Standard D-Bus property GetAll() method, see D-Bus
600
690
standard.
601
691
602
692
Note: Will not include properties with access="write".
603
693
"""
604
694
all = {}
608
698
# Interface non-empty but did not match
609
699
continue
610
700
# Ignore write-only properties
611
if prop._dbus_access == u"write":
701
if prop._dbus_access == "write":
612
702
continue
613
703
value = prop()
614
if not hasattr(value, u"variant_level"):
704
if not hasattr(value, "variant_level"):
615
705
all[name] = value
616
706
continue
617
707
all[name] = type(value)(value, variant_level=
618
708
value.variant_level+1)
619
return dbus.Dictionary(all, signature=u"sv")
709
return dbus.Dictionary(all, signature="sv")
620
710
621
711
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
622
out_signature=u"s",
712
out_signature="s",
623
713
path_keyword='object_path',
624
714
connection_keyword='connection')
625
715
def Introspect(self, object_path, connection):
630
720
try:
631
721
document = xml.dom.minidom.parseString(xmlstring)
632
722
def make_tag(document, name, prop):
633
e = document.createElement(u"property")
634
e.setAttribute(u"name", name)
635
e.setAttribute(u"type", prop._dbus_signature)
636
e.setAttribute(u"access", prop._dbus_access)
723
e = document.createElement("property")
724
e.setAttribute("name", name)
725
e.setAttribute("type", prop._dbus_signature)
726
e.setAttribute("access", prop._dbus_access)
637
727
return e
638
for if_tag in document.getElementsByTagName(u"interface"):
728
for if_tag in document.getElementsByTagName("interface"):
639
729
for tag in (make_tag(document, name, prop)
640
730
for name, prop
641
731
in self._get_all_dbus_properties()
642
732
if prop._dbus_interface
643
== if_tag.getAttribute(u"name")):
733
== if_tag.getAttribute("name")):
644
734
if_tag.appendChild(tag)
645
735
# Add the names to the return values for the
646
736
# "org.freedesktop.DBus.Properties" methods
647
if (if_tag.getAttribute(u"name")
648
== u"org.freedesktop.DBus.Properties"):
649
for cn in if_tag.getElementsByTagName(u"method"):
650
if cn.getAttribute(u"name") == u"Get":
651
for arg in cn.getElementsByTagName(u"arg"):
652
if (arg.getAttribute(u"direction")
653
== u"out"):
654
arg.setAttribute(u"name", u"value")
655
elif cn.getAttribute(u"name") == u"GetAll":
656
for arg in cn.getElementsByTagName(u"arg"):
657
if (arg.getAttribute(u"direction")
658
== u"out"):
659
arg.setAttribute(u"name", u"props")
660
xmlstring = document.toxml(u"utf-8")
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")
661
751
document.unlink()
662
752
except (AttributeError, xml.dom.DOMException,
663
xml.parsers.expat.ExpatError), error:
664
logger.error(u"Failed to override Introspection method",
753
xml.parsers.expat.ExpatError) as error:
754
logger.error("Failed to override Introspection method",
665
755
error)
666
756
return xmlstring
667
757
668
758
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
669
863
class ClientDBus(Client, DBusObjectWithProperties):
670
864
"""A Client class using D-Bus
671
865
673
867
dbus_object_path: dbus.ObjectPath
674
868
bus: dbus.SystemBus()
675
869
"""
870
871
runtime_expansions = (Client.runtime_expansions
872
+ ("dbus_object_path",))
873
676
874
# dbus.service.Object doesn't use super(), so we can't either.
677
875
678
876
def __init__(self, bus = None, *args, **kwargs):
877
self._approvals_pending = 0
679
878
self.bus = bus
680
879
Client.__init__(self, *args, **kwargs)
681
880
# Only now, when this client is initialized, can it show up on
682
881
# the D-Bus
882
client_object_name = unicode(self.name).translate(
883
{ord("."): ord("_"),
884
ord("-"): ord("_")})
683
885
self.dbus_object_path = (dbus.ObjectPath
684
(u"/clients/"
685
+ self.name.replace(u".", u"_")))
886
("/clients/" + client_object_name))
686
887
DBusObjectWithProperties.__init__(self, self.bus,
687
888
self.dbus_object_path)
688
689
@staticmethod
690
def _datetime_to_dbus(dt, variant_level=0):
691
"""Convert a UTC datetime.datetime() to a D-Bus type."""
692
return dbus.String(dt.isoformat(),
693
variant_level=variant_level)
694
695
def enable(self):
696
oldstate = getattr(self, u"enabled", False)
697
r = Client.enable(self)
698
if oldstate != self.enabled:
699
# Emit D-Bus signals
700
self.PropertyChanged(dbus.String(u"enabled"),
701
dbus.Boolean(True, variant_level=1))
702
self.PropertyChanged(
703
dbus.String(u"last_enabled"),
704
self._datetime_to_dbus(self.last_enabled,
705
variant_level=1))
706
return r
707
708
def disable(self, signal = True):
709
oldstate = getattr(self, u"enabled", False)
710
r = Client.disable(self)
711
if signal and oldstate != self.enabled:
712
# Emit D-Bus signal
713
self.PropertyChanged(dbus.String(u"enabled"),
714
dbus.Boolean(False, variant_level=1))
715
return r
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
716
956
717
957
def __del__(self, *args, **kwargs):
718
958
try:
719
959
self.remove_from_connection()
720
960
except LookupError:
721
961
pass
722
if hasattr(DBusObjectWithProperties, u"__del__"):
962
if hasattr(DBusObjectWithProperties, "__del__"):
723
963
DBusObjectWithProperties.__del__(self, *args, **kwargs)
724
964
Client.__del__(self, *args, **kwargs)
725
965
727
967
*args, **kwargs):
728
968
self.checker_callback_tag = None
729
969
self.checker = None
730
# Emit D-Bus signal
731
self.PropertyChanged(dbus.String(u"checker_running"),
732
dbus.Boolean(False, variant_level=1))
733
970
if os.WIFEXITED(condition):
734
971
exitstatus = os.WEXITSTATUS(condition)
735
972
# Emit D-Bus signal
745
982
return Client.checker_callback(self, pid, condition, command,
746
983
*args, **kwargs)
747
984
748
def checked_ok(self, *args, **kwargs):
749
r = Client.checked_ok(self, *args, **kwargs)
750
# Emit D-Bus signal
751
self.PropertyChanged(
752
dbus.String(u"last_checked_ok"),
753
(self._datetime_to_dbus(self.last_checked_ok,
754
variant_level=1)))
755
return r
756
757
985
def start_checker(self, *args, **kwargs):
758
986
old_checker = self.checker
759
987
if self.checker is not None:
766
994
and old_checker_pid != self.checker.pid):
767
995
# Emit D-Bus signal
768
996
self.CheckerStarted(self.current_checker_command)
769
self.PropertyChanged(
770
dbus.String(u"checker_running"),
771
dbus.Boolean(True, variant_level=1))
772
return r
773
774
def stop_checker(self, *args, **kwargs):
775
old_checker = getattr(self, u"checker", None)
776
r = Client.stop_checker(self, *args, **kwargs)
777
if (old_checker is not None
778
and getattr(self, u"checker", None) is None):
779
self.PropertyChanged(dbus.String(u"checker_running"),
780
dbus.Boolean(False, variant_level=1))
781
return r
782
783
## D-Bus methods & signals
784
_interface = u"se.bsnet.fukt.Mandos.Client"
785
786
# CheckedOK - method
787
@dbus.service.method(_interface)
788
def CheckedOK(self):
789
return self.checked_ok()
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
790
1015
791
1016
# CheckerCompleted - signal
792
@dbus.service.signal(_interface, signature=u"nxs")
1017
@dbus.service.signal(_interface, signature="nxs")
793
1018
def CheckerCompleted(self, exitcode, waitstatus, command):
794
1019
"D-Bus signal"
795
1020
pass
796
1021
797
1022
# CheckerStarted - signal
798
@dbus.service.signal(_interface, signature=u"s")
1023
@dbus.service.signal(_interface, signature="s")
799
1024
def CheckerStarted(self, command):
800
1025
"D-Bus signal"
801
1026
pass
802
1027
803
1028
# PropertyChanged - signal
804
@dbus.service.signal(_interface, signature=u"sv")
1029
@dbus.service.signal(_interface, signature="sv")
805
1030
def PropertyChanged(self, property, value):
806
1031
"D-Bus signal"
807
1032
pass
809
1034
# GotSecret - signal
810
1035
@dbus.service.signal(_interface)
811
1036
def GotSecret(self):
812
"D-Bus signal"
1037
"""D-Bus signal
1038
Is sent after a successful transfer of secret from the Mandos
1039
server to mandos-client
1040
"""
813
1041
pass
814
1042
815
1043
# Rejected - signal
816
@dbus.service.signal(_interface)
817
def Rejected(self):
1044
@dbus.service.signal(_interface, signature="s")
1045
def Rejected(self, reason):
818
1046
"D-Bus signal"
819
1047
pass
820
1048
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
821
1067
# Enable - method
822
1068
@dbus.service.method(_interface)
823
1069
def Enable(self):
841
1087
def StopChecker(self):
842
1088
self.stop_checker()
843
1089
844
# name - property
845
@dbus_service_property(_interface, signature=u"s", access=u"read")
846
def name_dbus_property(self):
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):
847
1125
return dbus.String(self.name)
848
1126
849
# fingerprint - property
850
@dbus_service_property(_interface, signature=u"s", access=u"read")
851
def fingerprint_dbus_property(self):
1127
# Fingerprint - property
1128
@dbus_service_property(_interface, signature="s", access="read")
1129
def Fingerprint_dbus_property(self):
852
1130
return dbus.String(self.fingerprint)
853
1131
854
# host - property
855
@dbus_service_property(_interface, signature=u"s",
856
access=u"readwrite")
857
def host_dbus_property(self, value=None):
1132
# Host - property
1133
@dbus_service_property(_interface, signature="s",
1134
access="readwrite")
1135
def Host_dbus_property(self, value=None):
858
1136
if value is None: # get
859
1137
return dbus.String(self.host)
860
1138
self.host = value
861
# Emit D-Bus signal
862
self.PropertyChanged(dbus.String(u"host"),
863
dbus.String(value, variant_level=1))
864
865
# created - property
866
@dbus_service_property(_interface, signature=u"s", access=u"read")
867
def created_dbus_property(self):
868
return dbus.String(self._datetime_to_dbus(self.created))
869
870
# last_enabled - property
871
@dbus_service_property(_interface, signature=u"s", access=u"read")
872
def last_enabled_dbus_property(self):
873
if self.last_enabled is None:
874
return dbus.String(u"")
875
return dbus.String(self._datetime_to_dbus(self.last_enabled))
876
877
# enabled - property
878
@dbus_service_property(_interface, signature=u"b",
879
access=u"readwrite")
880
def enabled_dbus_property(self, value=None):
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):
881
1154
if value is None: # get
882
1155
return dbus.Boolean(self.enabled)
883
1156
if value:
885
1158
else:
886
1159
self.disable()
887
1160
888
# last_checked_ok - property
889
@dbus_service_property(_interface, signature=u"s",
890
access=u"readwrite")
891
def last_checked_ok_dbus_property(self, value=None):
1161
# LastCheckedOK - property
1162
@dbus_service_property(_interface, signature="s",
1163
access="readwrite")
1164
def LastCheckedOK_dbus_property(self, value=None):
892
1165
if value is not None:
893
1166
self.checked_ok()
894
1167
return
895
if self.last_checked_ok is None:
896
return dbus.String(u"")
897
return dbus.String(self._datetime_to_dbus(self
898
.last_checked_ok))
899
900
# timeout - property
901
@dbus_service_property(_interface, signature=u"t",
902
access=u"readwrite")
903
def timeout_dbus_property(self, value=None):
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):
904
1184
if value is None: # get
905
1185
return dbus.UInt64(self.timeout_milliseconds())
906
1186
self.timeout = datetime.timedelta(0, 0, 0, value)
907
# Emit D-Bus signal
908
self.PropertyChanged(dbus.String(u"timeout"),
909
dbus.UInt64(value, variant_level=1))
910
if getattr(self, u"disable_initiator_tag", None) is None:
1187
if getattr(self, "disable_initiator_tag", None) is None:
911
1188
return
912
1189
# Reschedule timeout
913
1190
gobject.source_remove(self.disable_initiator_tag)
914
1191
self.disable_initiator_tag = None
915
time_to_die = (self.
916
_timedelta_to_milliseconds((self
917
.last_checked_ok
918
+ self.timeout)
919
- datetime.datetime
920
.utcnow()))
1192
self.expires = None
1193
time_to_die = _timedelta_to_milliseconds((self
1194
.last_checked_ok
1195
+ self.timeout)
1196
- datetime.datetime
1197
.utcnow())
921
1198
if time_to_die <= 0:
922
1199
# The timeout has passed
923
1200
self.disable()
924
1201
else:
1202
self.expires = (datetime.datetime.utcnow()
1203
+ datetime.timedelta(milliseconds =
1204
time_to_die))
925
1205
self.disable_initiator_tag = (gobject.timeout_add
926
1206
(time_to_die, self.disable))
927
1207
928
# interval - property
929
@dbus_service_property(_interface, signature=u"t",
930
access=u"readwrite")
931
def interval_dbus_property(self, value=None):
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):
932
1220
if value is None: # get
933
1221
return dbus.UInt64(self.interval_milliseconds())
934
1222
self.interval = datetime.timedelta(0, 0, 0, value)
935
# Emit D-Bus signal
936
self.PropertyChanged(dbus.String(u"interval"),
937
dbus.UInt64(value, variant_level=1))
938
if getattr(self, u"checker_initiator_tag", None) is None:
1223
if getattr(self, "checker_initiator_tag", None) is None:
939
1224
return
940
1225
# Reschedule checker run
941
1226
gobject.source_remove(self.checker_initiator_tag)
942
1227
self.checker_initiator_tag = (gobject.timeout_add
943
1228
(value, self.start_checker))
944
1229
self.start_checker() # Start one now, too
945
946
# checker - property
947
@dbus_service_property(_interface, signature=u"s",
948
access=u"readwrite")
949
def checker_dbus_property(self, value=None):
1230
1231
# Checker - property
1232
@dbus_service_property(_interface, signature="s",
1233
access="readwrite")
1234
def Checker_dbus_property(self, value=None):
950
1235
if value is None: # get
951
1236
return dbus.String(self.checker_command)
952
1237
self.checker_command = value
953
# Emit D-Bus signal
954
self.PropertyChanged(dbus.String(u"checker"),
955
dbus.String(self.checker_command,
956
variant_level=1))
957
1238
958
# checker_running - property
959
@dbus_service_property(_interface, signature=u"b",
960
access=u"readwrite")
961
def checker_running_dbus_property(self, value=None):
1239
# CheckerRunning - property
1240
@dbus_service_property(_interface, signature="b",
1241
access="readwrite")
1242
def CheckerRunning_dbus_property(self, value=None):
962
1243
if value is None: # get
963
1244
return dbus.Boolean(self.checker is not None)
964
1245
if value:
966
1247
else:
967
1248
self.stop_checker()
968
1249
969
# object_path - property
970
@dbus_service_property(_interface, signature=u"o", access=u"read")
971
def object_path_dbus_property(self):
1250
# ObjectPath - property
1251
@dbus_service_property(_interface, signature="o", access="read")
1252
def ObjectPath_dbus_property(self):
972
1253
return self.dbus_object_path # is already a dbus.ObjectPath
973
1254
974
# secret = property
975
@dbus_service_property(_interface, signature=u"ay",
976
access=u"write", byte_arrays=True)
977
def secret_dbus_property(self, value):
1255
# Secret = property
1256
@dbus_service_property(_interface, signature="ay",
1257
access="write", byte_arrays=True)
1258
def Secret_dbus_property(self, value):
978
1259
self.secret = str(value)
979
1260
980
1261
del _interface
981
1262
982
1263
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
983
1292
class ClientHandler(socketserver.BaseRequestHandler, object):
984
1293
"""A class to handle client connections.
985
1294
987
1296
Note: This will run in its own forked process."""
988
1297
989
1298
def handle(self):
990
logger.info(u"TCP connection from: %s",
991
unicode(self.client_address))
992
logger.debug(u"IPC Pipe FD: %d", self.server.pipe[1])
993
# Open IPC pipe to parent process
994
with closing(os.fdopen(self.server.pipe[1], u"w", 1)) as ipc:
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
995
1305
session = (gnutls.connection
996
1306
.ClientSession(self.request,
997
1307
gnutls.connection
998
1308
.X509Credentials()))
999
1309
1000
line = self.request.makefile().readline()
1001
logger.debug(u"Protocol version: %r", line)
1002
try:
1003
if int(line.strip().split()[0]) > 1:
1004
raise RuntimeError
1005
except (ValueError, IndexError, RuntimeError), error:
1006
logger.error(u"Unknown protocol version: %s", error)
1007
return
1008
1009
1310
# Note: gnutls.connection.X509Credentials is really a
1010
1311
# generic GnuTLS certificate credentials object so long as
1011
1312
# no X.509 keys are added to it. Therefore, we can use it
1012
1313
# here despite using OpenPGP certificates.
1013
1314
1014
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1015
# u"+AES-256-CBC", u"+SHA1",
1016
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1017
# u"+DHE-DSS"))
1315
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1316
# "+AES-256-CBC", "+SHA1",
1317
# "+COMP-NULL", "+CTYPE-OPENPGP",
1318
# "+DHE-DSS"))
1018
1319
# Use a fallback default, since this MUST be set.
1019
1320
priority = self.server.gnutls_priority
1020
1321
if priority is None:
1021
priority = u"NORMAL"
1322
priority = "NORMAL"
1022
1323
(gnutls.library.functions
1023
1324
.gnutls_priority_set_direct(session._c_object,
1024
1325
priority, None))
1025
1326
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
1026
1339
try:
1027
1340
session.handshake()
1028
except gnutls.errors.GNUTLSError, error:
1029
logger.warning(u"Handshake failed: %s", error)
1341
except gnutls.errors.GNUTLSError as error:
1342
logger.warning("Handshake failed: %s", error)
1030
1343
# Do not run session.bye() here: the session is not
1031
1344
# established. Just abandon the request.
1032
1345
return
1033
logger.debug(u"Handshake succeeded")
1346
logger.debug("Handshake succeeded")
1347
1348
approval_required = False
1034
1349
try:
1035
fpr = self.fingerprint(self.peer_certificate(session))
1036
except (TypeError, gnutls.errors.GNUTLSError), error:
1037
logger.warning(u"Bad certificate: %s", error)
1038
session.bye()
1039
return
1040
logger.debug(u"Fingerprint: %s", fpr)
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()
1041
1438
1042
for c in self.server.clients:
1043
if c.fingerprint == fpr:
1044
client = c
1045
break
1046
else:
1047
ipc.write(u"NOTFOUND %s %s\n"
1048
% (fpr, unicode(self.client_address)))
1049
session.bye()
1050
return
1051
# Have to check if client.still_valid(), since it is
1052
# possible that the client timed out while establishing
1053
# the GnuTLS session.
1054
if not client.still_valid():
1055
ipc.write(u"INVALID %s\n" % client.name)
1056
session.bye()
1057
return
1058
ipc.write(u"SENDING %s\n" % client.name)
1059
sent_size = 0
1060
while sent_size < len(client.secret):
1061
sent = session.send(client.secret[sent_size:])
1062
logger.debug(u"Sent: %d, remaining: %d",
1063
sent, len(client.secret)
1064
- (sent_size + sent))
1065
sent_size += sent
1066
session.bye()
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")
1067
1446
1068
1447
@staticmethod
1069
1448
def peer_certificate(session):
1079
1458
.gnutls_certificate_get_peers
1080
1459
(session._c_object, ctypes.byref(list_size)))
1081
1460
if not bool(cert_list) and list_size.value != 0:
1082
raise gnutls.errors.GNUTLSError(u"error getting peer"
1083
u" certificate")
1461
raise gnutls.errors.GNUTLSError("error getting peer"
1462
" certificate")
1084
1463
if list_size.value == 0:
1085
1464
return None
1086
1465
cert = cert_list[0]
1112
1491
if crtverify.value != 0:
1113
1492
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1114
1493
raise (gnutls.errors.CertificateSecurityError
1115
(u"Verify failed"))
1494
("Verify failed"))
1116
1495
# New buffer for the fingerprint
1117
1496
buf = ctypes.create_string_buffer(20)
1118
1497
buf_len = ctypes.c_size_t()
1125
1504
# Convert the buffer to a Python bytestring
1126
1505
fpr = ctypes.string_at(buf, buf_len.value)
1127
1506
# Convert the bytestring to hexadecimal notation
1128
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1507
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
1129
1508
return hex_fpr
1130
1509
1131
1510
1132
class ForkingMixInWithPipe(socketserver.ForkingMixIn, object):
1133
"""Like socketserver.ForkingMixIn, but also pass a pipe."""
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 """
1134
1531
def process_request(self, request, client_address):
1135
1532
"""Overrides and wraps the original process_request().
1136
1533
1137
1534
This function creates a new pipe in self.pipe
1138
1535
"""
1139
self.pipe = os.pipe()
1140
super(ForkingMixInWithPipe,
1141
self).process_request(request, client_address)
1142
os.close(self.pipe[1]) # close write end
1143
self.add_pipe(self.pipe[0])
1144
def add_pipe(self, pipe):
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):
1145
1544
"""Dummy function; override as necessary"""
1146
os.close(pipe)
1147
1148
1149
class IPv6_TCPServer(ForkingMixInWithPipe,
1545
raise NotImplementedError
1546
1547
1548
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1150
1549
socketserver.TCPServer, object):
1151
1550
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1152
1551
1168
1567
bind to an address or port if they were not specified."""
1169
1568
if self.interface is not None:
1170
1569
if SO_BINDTODEVICE is None:
1171
logger.error(u"SO_BINDTODEVICE does not exist;"
1172
u" cannot bind to interface %s",
1570
logger.error("SO_BINDTODEVICE does not exist;"
1571
" cannot bind to interface %s",
1173
1572
self.interface)
1174
1573
else:
1175
1574
try:
1176
1575
self.socket.setsockopt(socket.SOL_SOCKET,
1177
1576
SO_BINDTODEVICE,
1178
1577
str(self.interface
1179
+ u'\0'))
1180
except socket.error, error:
1578
+ '\0'))
1579
except socket.error as error:
1181
1580
if error[0] == errno.EPERM:
1182
logger.error(u"No permission to"
1183
u" bind to interface %s",
1581
logger.error("No permission to"
1582
" bind to interface %s",
1184
1583
self.interface)
1185
1584
elif error[0] == errno.ENOPROTOOPT:
1186
logger.error(u"SO_BINDTODEVICE not available;"
1187
u" cannot bind to interface %s",
1585
logger.error("SO_BINDTODEVICE not available;"
1586
" cannot bind to interface %s",
1188
1587
self.interface)
1189
1588
else:
1190
1589
raise
1192
1591
if self.server_address[0] or self.server_address[1]:
1193
1592
if not self.server_address[0]:
1194
1593
if self.address_family == socket.AF_INET6:
1195
any_address = u"::" # in6addr_any
1594
any_address = "::" # in6addr_any
1196
1595
else:
1197
1596
any_address = socket.INADDR_ANY
1198
1597
self.server_address = (any_address,
1235
1634
def server_activate(self):
1236
1635
if self.enabled:
1237
1636
return socketserver.TCPServer.server_activate(self)
1637
1238
1638
def enable(self):
1239
1639
self.enabled = True
1240
def add_pipe(self, pipe):
1640
1641
def add_pipe(self, parent_pipe, proc):
1241
1642
# Call "handle_ipc" for both data and EOF events
1242
gobject.io_add_watch(pipe, gobject.IO_IN | gobject.IO_HUP,
1243
self.handle_ipc)
1244
def handle_ipc(self, source, condition, file_objects={}):
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):
1245
1652
condition_names = {
1246
gobject.IO_IN: u"IN", # There is data to read.
1247
gobject.IO_OUT: u"OUT", # Data can be written (without
1653
gobject.IO_IN: "IN", # There is data to read.
1654
gobject.IO_OUT: "OUT", # Data can be written (without
1248
1655
# blocking).
1249
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1250
gobject.IO_ERR: u"ERR", # Error condition.
1251
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
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
1252
1659
# broken, usually for pipes and
1253
1660
# sockets).
1254
1661
}
1256
1663
for cond, name in
1257
1664
condition_names.iteritems()
1258
1665
if cond & condition)
1259
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1260
conditions_string)
1261
1262
# Turn the pipe file descriptor into a Python file object
1263
if source not in file_objects:
1264
file_objects[source] = os.fdopen(source, u"r", 1)
1265
1266
# Read a line from the file object
1267
cmdline = file_objects[source].readline()
1268
if not cmdline: # Empty line means end of file
1269
# close the IPC pipe
1270
file_objects[source].close()
1271
del file_objects[source]
1272
1273
# Stop calling this function
1274
return False
1275
1276
logger.debug(u"IPC command: %r", cmdline)
1277
1278
# Parse and act on command
1279
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1280
1281
if cmd == u"NOTFOUND":
1282
logger.warning(u"Client not found for fingerprint: %s",
1283
args)
1284
if self.use_dbus:
1285
# Emit D-Bus signal
1286
mandos_dbus_service.ClientNotFound(args)
1287
elif cmd == u"INVALID":
1288
for client in self.clients:
1289
if client.name == args:
1290
logger.warning(u"Client %s is invalid", args)
1291
if self.use_dbus:
1292
# Emit D-Bus signal
1293
client.Rejected()
1294
break
1295
else:
1296
logger.error(u"Unknown client %s is invalid", args)
1297
elif cmd == u"SENDING":
1298
for client in self.clients:
1299
if client.name == args:
1300
logger.info(u"Sending secret to %s", client.name)
1301
client.checked_ok()
1302
if self.use_dbus:
1303
# Emit D-Bus signal
1304
client.GotSecret()
1305
break
1306
else:
1307
logger.error(u"Sending secret to unknown client %s",
1308
args)
1309
else:
1310
logger.error(u"Unknown IPC command: %r", cmdline)
1311
1312
# Keep calling this function
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
1313
1728
return True
1314
1729
1315
1730
1316
1731
def string_to_delta(interval):
1317
1732
"""Parse a string and return a datetime.timedelta
1318
1733
1319
>>> string_to_delta(u'7d')
1734
>>> string_to_delta('7d')
1320
1735
datetime.timedelta(7)
1321
>>> string_to_delta(u'60s')
1736
>>> string_to_delta('60s')
1322
1737
datetime.timedelta(0, 60)
1323
>>> string_to_delta(u'60m')
1738
>>> string_to_delta('60m')
1324
1739
datetime.timedelta(0, 3600)
1325
>>> string_to_delta(u'24h')
1740
>>> string_to_delta('24h')
1326
1741
datetime.timedelta(1)
1327
>>> string_to_delta(u'1w')
1742
>>> string_to_delta('1w')
1328
1743
datetime.timedelta(7)
1329
>>> string_to_delta(u'5m 30s')
1744
>>> string_to_delta('5m 30s')
1330
1745
datetime.timedelta(0, 330)
1331
1746
"""
1332
1747
timevalue = datetime.timedelta(0)
1334
1749
try:
1335
1750
suffix = unicode(s[-1])
1336
1751
value = int(s[:-1])
1337
if suffix == u"d":
1752
if suffix == "d":
1338
1753
delta = datetime.timedelta(value)
1339
elif suffix == u"s":
1754
elif suffix == "s":
1340
1755
delta = datetime.timedelta(0, value)
1341
elif suffix == u"m":
1756
elif suffix == "m":
1342
1757
delta = datetime.timedelta(0, 0, 0, 0, value)
1343
elif suffix == u"h":
1758
elif suffix == "h":
1344
1759
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1345
elif suffix == u"w":
1760
elif suffix == "w":
1346
1761
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1347
1762
else:
1348
raise ValueError
1349
except (ValueError, IndexError):
1350
raise ValueError
1763
raise ValueError("Unknown suffix %r" % suffix)
1764
except (ValueError, IndexError) as e:
1765
raise ValueError(*(e.args))
1351
1766
timevalue += delta
1352
1767
return timevalue
1353
1768
1359
1774
global if_nametoindex
1360
1775
try:
1361
1776
if_nametoindex = (ctypes.cdll.LoadLibrary
1362
(ctypes.util.find_library(u"c"))
1777
(ctypes.util.find_library("c"))
1363
1778
.if_nametoindex)
1364
1779
except (OSError, AttributeError):
1365
logger.warning(u"Doing if_nametoindex the hard way")
1780
logger.warning("Doing if_nametoindex the hard way")
1366
1781
def if_nametoindex(interface):
1367
1782
"Get an interface index the hard way, i.e. using fcntl()"
1368
1783
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1369
with closing(socket.socket()) as s:
1784
with contextlib.closing(socket.socket()) as s:
1370
1785
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1371
struct.pack(str(u"16s16x"),
1786
struct.pack(str("16s16x"),
1372
1787
interface))
1373
interface_index = struct.unpack(str(u"I"),
1788
interface_index = struct.unpack(str("I"),
1374
1789
ifreq[16:20])[0]
1375
1790
return interface_index
1376
1791
return if_nametoindex(interface)
1384
1799
sys.exit()
1385
1800
os.setsid()
1386
1801
if not nochdir:
1387
os.chdir(u"/")
1802
os.chdir("/")
1388
1803
if os.fork():
1389
1804
sys.exit()
1390
1805
if not noclose:
1392
1807
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1393
1808
if not stat.S_ISCHR(os.fstat(null).st_mode):
1394
1809
raise OSError(errno.ENODEV,
1395
u"%s not a character device"
1810
"%s not a character device"
1396
1811
% os.path.devnull)
1397
1812
os.dup2(null, sys.stdin.fileno())
1398
1813
os.dup2(null, sys.stdout.fileno())
1406
1821
##################################################################
1407
1822
# Parsing of options, both command line and config file
1408
1823
1409
parser = optparse.OptionParser(version = "%%prog %s" % version)
1410
parser.add_option("-i", u"--interface", type=u"string",
1411
metavar="IF", help=u"Bind to interface IF")
1412
parser.add_option("-a", u"--address", type=u"string",
1413
help=u"Address to listen for requests on")
1414
parser.add_option("-p", u"--port", type=u"int",
1415
help=u"Port number to receive requests on")
1416
parser.add_option("--check", action=u"store_true",
1417
help=u"Run self-test")
1418
parser.add_option("--debug", action=u"store_true",
1419
help=u"Debug mode; run in foreground and log to"
1420
u" terminal")
1421
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1422
u" priority string (see GnuTLS documentation)")
1423
parser.add_option("--servicename", type=u"string",
1424
metavar=u"NAME", help=u"Zeroconf service name")
1425
parser.add_option("--configdir", type=u"string",
1426
default=u"/etc/mandos", metavar=u"DIR",
1427
help=u"Directory to search for configuration"
1428
u" files")
1429
parser.add_option("--no-dbus", action=u"store_false",
1430
dest=u"use_dbus", help=u"Do not provide D-Bus"
1431
u" system bus interface")
1432
parser.add_option("--no-ipv6", action=u"store_false",
1433
dest=u"use_ipv6", help=u"Do not use IPv6")
1434
options = parser.parse_args()[0]
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()
1435
1855
1436
1856
if options.check:
1437
1857
import doctest
1439
1859
sys.exit()
1440
1860
1441
1861
# Default values for config file for server-global settings
1442
server_defaults = { u"interface": u"",
1443
u"address": u"",
1444
u"port": u"",
1445
u"debug": u"False",
1446
u"priority":
1447
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1448
u"servicename": u"Mandos",
1449
u"use_dbus": u"True",
1450
u"use_ipv6": u"True",
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": "",
1451
1872
}
1452
1873
1453
1874
# Parse config file for server-global settings
1454
1875
server_config = configparser.SafeConfigParser(server_defaults)
1455
1876
del server_defaults
1456
1877
server_config.read(os.path.join(options.configdir,
1457
u"mandos.conf"))
1878
"mandos.conf"))
1458
1879
# Convert the SafeConfigParser object to a dict
1459
1880
server_settings = server_config.defaults()
1460
1881
# Use the appropriate methods on the non-string config options
1461
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1462
server_settings[option] = server_config.getboolean(u"DEFAULT",
1882
for option in ("debug", "use_dbus", "use_ipv6"):
1883
server_settings[option] = server_config.getboolean("DEFAULT",
1463
1884
option)
1464
1885
if server_settings["port"]:
1465
server_settings["port"] = server_config.getint(u"DEFAULT",
1466
u"port")
1886
server_settings["port"] = server_config.getint("DEFAULT",
1887
"port")
1467
1888
del server_config
1468
1889
1469
1890
# Override the settings from the config file with command line
1470
1891
# options, if set.
1471
for option in (u"interface", u"address", u"port", u"debug",
1472
u"priority", u"servicename", u"configdir",
1473
u"use_dbus", u"use_ipv6"):
1892
for option in ("interface", "address", "port", "debug",
1893
"priority", "servicename", "configdir",
1894
"use_dbus", "use_ipv6", "debuglevel"):
1474
1895
value = getattr(options, option)
1475
1896
if value is not None:
1476
1897
server_settings[option] = value
1484
1905
##################################################################
1485
1906
1486
1907
# For convenience
1487
debug = server_settings[u"debug"]
1488
use_dbus = server_settings[u"use_dbus"]
1489
use_ipv6 = server_settings[u"use_ipv6"]
1490
1491
if not debug:
1492
syslogger.setLevel(logging.WARNING)
1493
console.setLevel(logging.WARNING)
1494
1495
if server_settings[u"servicename"] != u"Mandos":
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":
1496
1914
syslogger.setFormatter(logging.Formatter
1497
(u'Mandos (%s) [%%(process)d]:'
1498
u' %%(levelname)s: %%(message)s'
1499
% server_settings[u"servicename"]))
1915
('Mandos (%s) [%%(process)d]:'
1916
' %%(levelname)s: %%(message)s'
1917
% server_settings["servicename"]))
1500
1918
1501
1919
# Parse config file with clients
1502
client_defaults = { u"timeout": u"1h",
1503
u"interval": u"5m",
1504
u"checker": u"fping -q -- %%(host)s",
1505
u"host": u"",
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",
1506
1927
}
1507
1928
client_config = configparser.SafeConfigParser(client_defaults)
1508
client_config.read(os.path.join(server_settings[u"configdir"],
1509
u"clients.conf"))
1929
client_config.read(os.path.join(server_settings["configdir"],
1930
"clients.conf"))
1510
1931
1511
1932
global mandos_dbus_service
1512
1933
mandos_dbus_service = None
1513
1934
1514
tcp_server = MandosServer((server_settings[u"address"],
1515
server_settings[u"port"]),
1935
tcp_server = MandosServer((server_settings["address"],
1936
server_settings["port"]),
1516
1937
ClientHandler,
1517
interface=server_settings[u"interface"],
1938
interface=(server_settings["interface"]
1939
or None),
1518
1940
use_ipv6=use_ipv6,
1519
1941
gnutls_priority=
1520
server_settings[u"priority"],
1942
server_settings["priority"],
1521
1943
use_dbus=use_dbus)
1522
pidfilename = u"/var/run/mandos.pid"
1523
try:
1524
pidfile = open(pidfilename, u"w")
1525
except IOError:
1526
logger.error(u"Could not open file %r", pidfilename)
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)
1527
1950
1528
1951
try:
1529
uid = pwd.getpwnam(u"_mandos").pw_uid
1530
gid = pwd.getpwnam(u"_mandos").pw_gid
1952
uid = pwd.getpwnam("_mandos").pw_uid
1953
gid = pwd.getpwnam("_mandos").pw_gid
1531
1954
except KeyError:
1532
1955
try:
1533
uid = pwd.getpwnam(u"mandos").pw_uid
1534
gid = pwd.getpwnam(u"mandos").pw_gid
1956
uid = pwd.getpwnam("mandos").pw_uid
1957
gid = pwd.getpwnam("mandos").pw_gid
1535
1958
except KeyError:
1536
1959
try:
1537
uid = pwd.getpwnam(u"nobody").pw_uid
1538
gid = pwd.getpwnam(u"nobody").pw_gid
1960
uid = pwd.getpwnam("nobody").pw_uid
1961
gid = pwd.getpwnam("nobody").pw_gid
1539
1962
except KeyError:
1540
1963
uid = 65534
1541
1964
gid = 65534
1542
1965
try:
1543
1966
os.setgid(gid)
1544
1967
os.setuid(uid)
1545
except OSError, error:
1968
except OSError as error:
1546
1969
if error[0] != errno.EPERM:
1547
1970
raise error
1548
1971
1549
# Enable all possible GnuTLS debugging
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
1550
1980
if debug:
1981
# Enable all possible GnuTLS debugging
1982
1551
1983
# "Use a log level over 10 to enable all debugging options."
1552
1984
# - GnuTLS manual
1553
1985
gnutls.library.functions.gnutls_global_set_log_level(11)
1554
1986
1555
1987
@gnutls.library.types.gnutls_log_func
1556
1988
def debug_gnutls(level, string):
1557
logger.debug(u"GnuTLS: %s", string[:-1])
1989
logger.debug("GnuTLS: %s", string[:-1])
1558
1990
1559
1991
(gnutls.library.functions
1560
1992
.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()
1561
2007
1562
2008
global main_loop
1563
2009
# From the Avahi example code
1566
2012
bus = dbus.SystemBus()
1567
2013
# End of Avahi example code
1568
2014
if use_dbus:
1569
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos", bus)
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
1570
2026
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1571
service = AvahiService(name = server_settings[u"servicename"],
1572
servicetype = u"_mandos._tcp",
2027
service = AvahiService(name = server_settings["servicename"],
2028
servicetype = "_mandos._tcp",
1573
2029
protocol = protocol, bus = bus)
1574
2030
if server_settings["interface"]:
1575
2031
service.interface = (if_nametoindex
1576
(str(server_settings[u"interface"])))
2032
(str(server_settings["interface"])))
2033
2034
global multiprocessing_manager
2035
multiprocessing_manager = multiprocessing.Manager()
1577
2036
1578
2037
client_class = Client
1579
2038
if use_dbus:
1580
client_class = functools.partial(ClientDBus, bus = bus)
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
1581
2053
tcp_server.clients.update(set(
1582
2054
client_class(name = section,
1583
config= dict(client_config.items(section)))
2055
config= dict(client_config_items(
2056
client_config, section)))
1584
2057
for section in client_config.sections()))
1585
2058
if not tcp_server.clients:
1586
logger.warning(u"No clients defined")
1587
1588
if debug:
1589
# Redirect stdin so all checkers get /dev/null
1590
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1591
os.dup2(null, sys.stdin.fileno())
1592
if null > 2:
1593
os.close(null)
1594
else:
1595
# No console logging
1596
logger.removeHandler(console)
1597
# Close all input and output, do double fork, etc.
1598
daemon()
1599
1600
try:
1601
with closing(pidfile):
1602
pid = os.getpid()
1603
pidfile.write(str(pid) + "\n")
1604
del pidfile
1605
except IOError:
1606
logger.error(u"Could not write to file %r with PID %d",
1607
pidfilename, pid)
1608
except NameError:
1609
# "pidfile" was never created
1610
pass
1611
del pidfilename
1612
1613
def cleanup():
1614
"Cleanup function; run on exit"
1615
service.cleanup()
2059
logger.warning("No clients defined")
1616
2060
1617
while tcp_server.clients:
1618
client = tcp_server.clients.pop()
1619
client.disable_hook = None
1620
client.disable()
1621
1622
atexit.register(cleanup)
1623
1624
2061
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
1625
2075
signal.signal(signal.SIGINT, signal.SIG_IGN)
2076
1626
2077
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1627
2078
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1628
2079
1630
2081
class MandosDBusService(dbus.service.Object):
1631
2082
"""A D-Bus proxy object"""
1632
2083
def __init__(self):
1633
dbus.service.Object.__init__(self, bus, u"/")
1634
_interface = u"se.bsnet.fukt.Mandos"
1635
1636
@dbus.service.signal(_interface, signature=u"oa{sv}")
1637
def ClientAdded(self, objpath, properties):
1638
"D-Bus signal"
1639
pass
1640
1641
@dbus.service.signal(_interface, signature=u"s")
1642
def ClientNotFound(self, fingerprint):
1643
"D-Bus signal"
1644
pass
1645
1646
@dbus.service.signal(_interface, signature=u"os")
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")
1647
2098
def ClientRemoved(self, objpath, name):
1648
2099
"D-Bus signal"
1649
2100
pass
1650
2101
1651
@dbus.service.method(_interface, out_signature=u"ao")
2102
@dbus.service.method(_interface, out_signature="ao")
1652
2103
def GetAllClients(self):
1653
2104
"D-Bus method"
1654
2105
return dbus.Array(c.dbus_object_path
1655
2106
for c in tcp_server.clients)
1656
2107
1657
2108
@dbus.service.method(_interface,
1658
out_signature=u"a{oa{sv}}")
2109
out_signature="a{oa{sv}}")
1659
2110
def GetAllClientsWithProperties(self):
1660
2111
"D-Bus method"
1661
2112
return dbus.Dictionary(
1662
((c.dbus_object_path, c.GetAll(u""))
2113
((c.dbus_object_path, c.GetAll(""))
1663
2114
for c in tcp_server.clients),
1664
signature=u"oa{sv}")
2115
signature="oa{sv}")
1665
2116
1666
@dbus.service.method(_interface, in_signature=u"o")
2117
@dbus.service.method(_interface, in_signature="o")
1667
2118
def RemoveClient(self, object_path):
1668
2119
"D-Bus method"
1669
2120
for c in tcp_server.clients:
1671
2122
tcp_server.clients.remove(c)
1672
2123
c.remove_from_connection()
1673
2124
# Don't signal anything except ClientRemoved
1674
c.disable(signal=False)
2125
c.disable(quiet=True)
1675
2126
# Emit D-Bus signal
1676
2127
self.ClientRemoved(object_path, c.name)
1677
2128
return
1678
raise KeyError
2129
raise KeyError(object_path)
1679
2130
1680
2131
del _interface
1681
2132
1682
mandos_dbus_service = MandosDBusService()
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)
1683
2156
1684
2157
for client in tcp_server.clients:
1685
2158
if use_dbus:
1686
2159
# Emit D-Bus signal
1687
mandos_dbus_service.ClientAdded(client.dbus_object_path,
1688
client.GetAll(u""))
2160
mandos_dbus_service.ClientAdded(client.dbus_object_path)
1689
2161
client.enable()
1690
2162
1691
2163
tcp_server.enable()
1694
2166
# Find out what port we got
1695
2167
service.port = tcp_server.socket.getsockname()[1]
1696
2168
if use_ipv6:
1697
logger.info(u"Now listening on address %r, port %d,"
2169
logger.info("Now listening on address %r, port %d,"
1698
2170
" flowinfo %d, scope_id %d"
1699
2171
% tcp_server.socket.getsockname())
1700
2172
else: # IPv4
1701
logger.info(u"Now listening on address %r, port %d"
2173
logger.info("Now listening on address %r, port %d"
1702
2174
% tcp_server.socket.getsockname())
1703
2175
1704
2176
#service.interface = tcp_server.socket.getsockname()[3]
1707
2179
# From the Avahi example code
1708
2180
try:
1709
2181
service.activate()
1710
except dbus.exceptions.DBusException, error:
1711
logger.critical(u"DBusException: %s", error)
2182
except dbus.exceptions.DBusException as error:
2183
logger.critical("DBusException: %s", error)
2184
cleanup()
1712
2185
sys.exit(1)
1713
2186
# End of Avahi example code
1714
2187
1717
2190
(tcp_server.handle_request
1718
2191
(*args[2:], **kwargs) or True))
1719
2192
1720
logger.debug(u"Starting main loop")
2193
logger.debug("Starting main loop")
1721
2194
main_loop.run()
1722
except AvahiError, error:
1723
logger.critical(u"AvahiError: %s", error)
2195
except AvahiError as error:
2196
logger.critical("AvahiError: %s", error)
2197
cleanup()
1724
2198
sys.exit(1)
1725
2199
except KeyboardInterrupt:
1726
2200
if debug:
1727
print >> sys.stderr
1728
logger.debug(u"Server received KeyboardInterrupt")
1729
logger.debug(u"Server exiting")
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
1730
2207
1731
2208
if __name__ == '__main__':
1732
2209
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0