/mandos/trunk : revision 439

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# "AvahiService" class, and some lines in "main".

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#

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# Everything else is

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#

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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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# Contact the authors at <mandos@fukt.bsnet.se>.

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#

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from __future__ import (division, absolute_import, print_function,

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unicode_literals)

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from __future__ import division, with_statement, absolute_import

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import SocketServer as socketserver

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import socket

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import argparse

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import optparse

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import datetime

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import errno

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import gnutls.crypto

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SO_BINDTODEVICE = None

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version = "1.3.1"

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version = "1.0.14"

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#logger = logging.getLogger('mandos')

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logger = logging.Logger('mandos')

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#logger = logging.getLogger(u'mandos')

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logger = logging.Logger(u'mandos')

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syslogger = (logging.handlers.SysLogHandler

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(facility = logging.handlers.SysLogHandler.LOG_DAEMON,

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address = str("/dev/log")))

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address = "/dev/log"))

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syslogger.setFormatter(logging.Formatter

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('Mandos [%(process)d]: %(levelname)s:'

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' %(message)s'))

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(u'Mandos [%(process)d]: %(levelname)s:'

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u' %(message)s'))

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logger.addHandler(syslogger)

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console = logging.StreamHandler()

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console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'

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' %(levelname)s:'

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' %(message)s'))

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console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'

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u' %(levelname)s:'

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u' %(message)s'))

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logger.addHandler(console)

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class AvahiError(Exception):

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Attributes:

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interface: integer; avahi.IF_UNSPEC or an interface index.

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Used to optionally bind to the specified interface.

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type: string; Example: '_mandos._tcp'.

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type: string; Example: u'_mandos._tcp'.

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See <http://www.dns-sd.org/ServiceTypes.html>

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port: integer; what port to announce

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TXT: list of strings; TXT record for the service

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"""

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def __init__(self, interface = avahi.IF_UNSPEC, name = None,

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servicetype = None, port = None, TXT = None,

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domain = "", host = "", max_renames = 32768,

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domain = u"", host = u"", max_renames = 32768,

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protocol = avahi.PROTO_UNSPEC, bus = None):

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self.interface = interface

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self.name = name

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self.group = None # our entry group

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self.server = None

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self.bus = bus

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self.entry_group_state_changed_match = None

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def rename(self):

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"""Derived from the Avahi example code"""

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if self.rename_count >= self.max_renames:

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logger.critical("No suitable Zeroconf service name found"

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" after %i retries, exiting.",

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logger.critical(u"No suitable Zeroconf service name found"

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u" after %i retries, exiting.",

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self.rename_count)

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raise AvahiServiceError("Too many renames")

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raise AvahiServiceError(u"Too many renames")

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self.name = unicode(self.server.GetAlternativeServiceName(self.name))

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logger.info("Changing Zeroconf service name to %r ...",

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logger.info(u"Changing Zeroconf service name to %r ...",

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self.name)

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syslogger.setFormatter(logging.Formatter

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('Mandos (%s) [%%(process)d]:'

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' %%(levelname)s: %%(message)s'

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(u'Mandos (%s) [%%(process)d]:'

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u' %%(levelname)s: %%(message)s'

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% self.name))

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self.remove()

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try:

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self.add()

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except dbus.exceptions.DBusException as error:

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logger.critical("DBusException: %s", error)

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except dbus.exceptions.DBusException, error:

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logger.critical(u"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.entry_group_state_changed_match = (

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self.group.connect_to_signal(

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'StateChanged', self .entry_group_state_changed))

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logger.debug("Adding Zeroconf service '%s' of type '%s' ...",

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self.group.connect_to_signal('StateChanged',

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self

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.entry_group_state_changed)

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logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",

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self.name, self.type)

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self.group.AddService(

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self.interface,

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self.group.Commit()

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def entry_group_state_changed(self, state, error):

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"""Derived from the Avahi example code"""

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logger.debug("Avahi entry group state change: %i", state)

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logger.debug(u"Avahi entry group state change: %i", state)

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if state == avahi.ENTRY_GROUP_ESTABLISHED:

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logger.debug("Zeroconf service established.")

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logger.debug(u"Zeroconf service established.")

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elif state == avahi.ENTRY_GROUP_COLLISION:

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logger.info("Zeroconf service name collision.")

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logger.warning(u"Zeroconf service name collision.")

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self.rename()

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elif state == avahi.ENTRY_GROUP_FAILURE:

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logger.critical("Avahi: Error in group state changed %s",

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logger.critical(u"Avahi: Error in group state changed %s",

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unicode(error))

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raise AvahiGroupError("State changed: %s"

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raise AvahiGroupError(u"State changed: %s"

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% unicode(error))

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def cleanup(self):

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"""Derived from the Avahi example code"""

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if self.group is not None:

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try:

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self.group.Free()

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except (dbus.exceptions.UnknownMethodException,

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dbus.exceptions.DBusException) as e:

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pass

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self.group.Free()

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self.group = None

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self.remove()

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def server_state_changed(self, state, error=None):

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def server_state_changed(self, state):

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"""Derived from the Avahi example code"""

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logger.debug("Avahi server state change: %i", state)

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bad_states = { avahi.SERVER_INVALID:

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"Zeroconf server invalid",

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avahi.SERVER_REGISTERING: None,

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avahi.SERVER_COLLISION:

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"Zeroconf server name collision",

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avahi.SERVER_FAILURE:

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"Zeroconf server failure" }

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if state in bad_states:

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if bad_states[state] is not None:

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if error is None:

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logger.error(bad_states[state])

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else:

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logger.error(bad_states[state] + ": %r", error)

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self.cleanup()

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logger.debug(u"Avahi server state change: %i", state)

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if state == avahi.SERVER_COLLISION:

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logger.error(u"Zeroconf server name collision")

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self.remove()

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elif state == avahi.SERVER_RUNNING:

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self.add()

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else:

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if error is None:

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logger.debug("Unknown state: %r", state)

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else:

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logger.debug("Unknown state: %r: %r", state, error)

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def activate(self):

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"""Derived from the Avahi example code"""

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if self.server is None:

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self.server = dbus.Interface(

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self.bus.get_object(avahi.DBUS_NAME,

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avahi.DBUS_PATH_SERVER,

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follow_name_owner_changes=True),

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avahi.DBUS_PATH_SERVER),

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avahi.DBUS_INTERFACE_SERVER)

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self.server.connect_to_signal("StateChanged",

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self.server.connect_to_signal(u"StateChanged",

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self.server_state_changed)

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self.server_state_changed(self.server.GetState())

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checker: subprocess.Popen(); a running checker process used

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to see if the client lives.

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'None' if no process is running.

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checker_callback_tag: a gobject event source tag, or None

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checker_callback_tag: - '' -

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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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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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disable_initiator_tag: - '' -

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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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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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"""

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runtime_expansions = ("approval_delay", "approval_duration",

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"created", "enabled", "fingerprint",

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"host", "interval", "last_checked_ok",

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"last_enabled", "name", "timeout")

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runtime_expansions = (u"approval_delay", u"approval_duration",

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u"created", u"enabled", u"fingerprint",

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u"host", u"interval", u"last_checked_ok",

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u"last_enabled", u"name", u"timeout")

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@staticmethod

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def _timedelta_to_milliseconds(td):

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def timeout_milliseconds(self):

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"Return the 'timeout' attribute in milliseconds"

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return self._timedelta_to_milliseconds(self.timeout)

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def extended_timeout_milliseconds(self):

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"Return the 'extended_timeout' attribute in milliseconds"

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return self._timedelta_to_milliseconds(self.extended_timeout)

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def interval_milliseconds(self):

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"Return the 'interval' attribute in milliseconds"

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self.name = name

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if config is None:

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config = {}

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logger.debug("Creating client %r", self.name)

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logger.debug(u"Creating client %r", self.name)

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# Uppercase and remove spaces from fingerprint for later

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# comparison purposes with return value from the fingerprint()

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# function

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self.fingerprint = (config["fingerprint"].upper()

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.replace(" ", ""))

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logger.debug(" Fingerprint: %s", self.fingerprint)

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if "secret" in config:

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self.secret = config["secret"].decode("base64")

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elif "secfile" in config:

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self.fingerprint = (config[u"fingerprint"].upper()

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.replace(u" ", u""))

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logger.debug(u" Fingerprint: %s", self.fingerprint)

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if u"secret" in config:

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self.secret = config[u"secret"].decode(u"base64")

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elif u"secfile" in config:

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with open(os.path.expanduser(os.path.expandvars

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(config["secfile"])),

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(config[u"secfile"])),

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"rb") as secfile:

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self.secret = secfile.read()

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else:

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raise TypeError("No secret or secfile for client %s"

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raise TypeError(u"No secret or secfile for client %s"

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% self.name)

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self.host = config.get("host", "")

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self.host = config.get(u"host", u"")

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self.created = datetime.datetime.utcnow()

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self.enabled = False

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self.last_approval_request = None

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self.last_enabled = None

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self.last_checked_ok = None

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self.timeout = string_to_delta(config["timeout"])

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self.extended_timeout = string_to_delta(config["extended_timeout"])

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self.interval = string_to_delta(config["interval"])

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self.timeout = string_to_delta(config[u"timeout"])

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self.interval = string_to_delta(config[u"interval"])

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self.disable_hook = disable_hook

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self.checker = None

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self.checker_initiator_tag = None

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self.disable_initiator_tag = None

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self.expires = None

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self.checker_callback_tag = None

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self.checker_command = config["checker"]

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self.checker_command = config[u"checker"]

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self.current_checker_command = None

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self.last_connect = None

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self._approved = None

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self.approved_by_default = config.get("approved_by_default",

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self.approved_by_default = config.get(u"approved_by_default",

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True)

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self.approvals_pending = 0

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self.approval_delay = string_to_delta(

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config["approval_delay"])

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config[u"approval_delay"])

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self.approval_duration = string_to_delta(

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config["approval_duration"])

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config[u"approval_duration"])

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self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())

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def send_changedstate(self):

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def enable(self):

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"""Start this client's checker and timeout hooks"""

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if getattr(self, "enabled", False):

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if getattr(self, u"enabled", False):

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# Already enabled

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return

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self.send_changedstate()

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(self.interval_milliseconds(),

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self.start_checker))

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# Schedule a disable() when 'timeout' has passed

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self.expires = datetime.datetime.utcnow() + self.timeout

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self.disable_initiator_tag = (gobject.timeout_add

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(self.timeout_milliseconds(),

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self.disable))

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if not quiet:

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self.send_changedstate()

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if not quiet:

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logger.info("Disabling client %s", self.name)

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if getattr(self, "disable_initiator_tag", False):

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logger.info(u"Disabling client %s", self.name)

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if getattr(self, u"disable_initiator_tag", False):

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gobject.source_remove(self.disable_initiator_tag)

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self.disable_initiator_tag = None

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self.expires = None

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if getattr(self, "checker_initiator_tag", False):

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if getattr(self, u"checker_initiator_tag", False):

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gobject.source_remove(self.checker_initiator_tag)

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self.checker_initiator_tag = None

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self.stop_checker()

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if os.WIFEXITED(condition):

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exitstatus = os.WEXITSTATUS(condition)

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if exitstatus == 0:

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logger.info("Checker for %(name)s succeeded",

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logger.info(u"Checker for %(name)s succeeded",

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vars(self))

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self.checked_ok()

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else:

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logger.info("Checker for %(name)s failed",

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logger.info(u"Checker for %(name)s failed",

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vars(self))

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else:

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logger.warning("Checker for %(name)s crashed?",

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logger.warning(u"Checker for %(name)s crashed?",

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vars(self))

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def checked_ok(self, timeout=None):

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def checked_ok(self):

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"""Bump up the timeout for this client.

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This should only be called when the client has been seen,

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alive and well.

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"""

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if timeout is None:

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timeout = self.timeout

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self.last_checked_ok = datetime.datetime.utcnow()

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gobject.source_remove(self.disable_initiator_tag)

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self.expires = datetime.datetime.utcnow() + timeout

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self.disable_initiator_tag = (gobject.timeout_add

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(self._timedelta_to_milliseconds(timeout),

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(self.timeout_milliseconds(),

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self.disable))

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def need_approval(self):

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self.last_approval_request = datetime.datetime.utcnow()

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def start_checker(self):

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"""Start a new checker subprocess if one is not running.

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# If a checker exists, make sure it is not a zombie

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try:

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pid, status = os.waitpid(self.checker.pid, os.WNOHANG)

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except (AttributeError, OSError) as error:

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except (AttributeError, OSError), error:

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if (isinstance(error, OSError)

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and error.errno != errno.ECHILD):

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raise error

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else:

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if pid:

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logger.warning("Checker was a zombie")

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logger.warning(u"Checker was a zombie")

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gobject.source_remove(self.checker_callback_tag)

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self.checker_callback(pid, status,

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self.current_checker_command)

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# Escape attributes for the shell

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escaped_attrs = dict(

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(attr,

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re.escape(unicode(str(getattr(self, attr, "")),

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re.escape(unicode(str(getattr(self, attr, u"")),

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errors=

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'replace')))

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u'replace')))

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for attr in

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self.runtime_expansions)

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try:

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command = self.checker_command % escaped_attrs

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except TypeError as error:

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logger.error('Could not format string "%s":'

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' %s', self.checker_command, error)

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except TypeError, error:

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logger.error(u'Could not format string "%s":'

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u' %s', self.checker_command, error)

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return True # Try again later

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self.current_checker_command = command

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try:

522

logger.info("Starting checker %r for %s",

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logger.info(u"Starting checker %r for %s",

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command, self.name)

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# We don't need to redirect stdout and stderr, since

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# in normal mode, that is already done by daemon(),

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# always replaced by /dev/null.)

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self.checker = subprocess.Popen(command,

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close_fds=True,

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shell=True, cwd="/")

483

shell=True, cwd=u"/")

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self.checker_callback_tag = (gobject.child_watch_add

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(self.checker.pid,

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self.checker_callback,

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if pid:

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gobject.source_remove(self.checker_callback_tag)

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self.checker_callback(pid, status, command)

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except OSError as error:

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logger.error("Failed to start subprocess: %s",

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except OSError, error:

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logger.error(u"Failed to start subprocess: %s",

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error)

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# Re-run this periodically if run by gobject.timeout_add

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return True

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if self.checker_callback_tag:

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gobject.source_remove(self.checker_callback_tag)

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self.checker_callback_tag = None

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if getattr(self, "checker", None) is None:

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if getattr(self, u"checker", None) is None:

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return

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logger.debug("Stopping checker for %(name)s", vars(self))

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logger.debug(u"Stopping checker for %(name)s", vars(self))

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try:

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509

os.kill(self.checker.pid, signal.SIGTERM)

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#time.sleep(0.5)

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#if self.checker.poll() is None:

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# os.kill(self.checker.pid, signal.SIGKILL)

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except OSError as error:

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except OSError, error:

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if error.errno != errno.ESRCH: # No such process

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raise

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self.checker = None

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def dbus_service_property(dbus_interface, signature="v",

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access="readwrite", byte_arrays=False):

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def dbus_service_property(dbus_interface, signature=u"v",

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access=u"readwrite", byte_arrays=False):

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"""Decorators for marking methods of a DBusObjectWithProperties to

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become properties on the D-Bus.

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"""

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# Encoding deeply encoded byte arrays is not supported yet by the

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# "Set" method, so we fail early here:

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if byte_arrays and signature != "ay":

580

raise ValueError("Byte arrays not supported for non-'ay'"

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" signature %r" % signature)

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if byte_arrays and signature != u"ay":

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raise ValueError(u"Byte arrays not supported for non-'ay'"

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u" signature %r" % signature)

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535

def decorator(func):

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func._dbus_is_property = True

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func._dbus_interface = dbus_interface

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func._dbus_signature = signature

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func._dbus_access = access

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func._dbus_name = func.__name__

588

if func._dbus_name.endswith("_dbus_property"):

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if func._dbus_name.endswith(u"_dbus_property"):

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func._dbus_name = func._dbus_name[:-14]

590

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

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func._dbus_get_args_options = {u'byte_arrays': byte_arrays }

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return func

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return decorator

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621

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@staticmethod

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def _is_dbus_property(obj):

624

return getattr(obj, "_dbus_is_property", False)

577

return getattr(obj, u"_dbus_is_property", False)

625

578

626

579

def _get_all_dbus_properties(self):

627

580

"""Returns a generator of (name, attribute) pairs

635

588

property with the specified name and interface.

636

589

"""

637

590

for name in (property_name,

638

property_name + "_dbus_property"):

591

property_name + u"_dbus_property"):

639

592

prop = getattr(self, name, None)

640

593

if (prop is None

641

594

or not self._is_dbus_property(prop)

645

598

continue

646

599

return prop

647

600

# No such property

648

raise DBusPropertyNotFound(self.dbus_object_path + ":"

649

+ interface_name + "."

601

raise DBusPropertyNotFound(self.dbus_object_path + u":"

602

+ interface_name + u"."

650

603

+ property_name)

651

604

652

@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",

653

out_signature="v")

605

@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",

606

out_signature=u"v")

654

607

def Get(self, interface_name, property_name):

655

608

"""Standard D-Bus property Get() method, see D-Bus standard.

656

609

"""

657

610

prop = self._get_dbus_property(interface_name, property_name)

658

if prop._dbus_access == "write":

611

if prop._dbus_access == u"write":

659

612

raise DBusPropertyAccessException(property_name)

660

613

value = prop()

661

if not hasattr(value, "variant_level"):

614

if not hasattr(value, u"variant_level"):

662

615

return value

663

616

return type(value)(value, variant_level=value.variant_level+1)

664

617

665

@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")

618

@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")

666

619

def Set(self, interface_name, property_name, value):

667

620

"""Standard D-Bus property Set() method, see D-Bus standard.

668

621

"""

669

622

prop = self._get_dbus_property(interface_name, property_name)

670

if prop._dbus_access == "read":

623

if prop._dbus_access == u"read":

671

624

raise DBusPropertyAccessException(property_name)

672

if prop._dbus_get_args_options["byte_arrays"]:

625

if prop._dbus_get_args_options[u"byte_arrays"]:

673

626

# The byte_arrays option is not supported yet on

674

627

# signatures other than "ay".

675

if prop._dbus_signature != "ay":

628

if prop._dbus_signature != u"ay":

676

629

raise ValueError

677

630

value = dbus.ByteArray(''.join(unichr(byte)

678

631

for byte in value))

679

632

prop(value)

680

633

681

@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",

682

out_signature="a{sv}")

634

@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",

635

out_signature=u"a{sv}")

683

636

def GetAll(self, interface_name):

684

637

"""Standard D-Bus property GetAll() method, see D-Bus

685

638

standard.

693

646

# Interface non-empty but did not match

694

647

continue

695

648

# Ignore write-only properties

696

if prop._dbus_access == "write":

649

if prop._dbus_access == u"write":

697

650

continue

698

651

value = prop()

699

if not hasattr(value, "variant_level"):

652

if not hasattr(value, u"variant_level"):

700

653

all[name] = value

701

654

continue

702

655

all[name] = type(value)(value, variant_level=

703

656

value.variant_level+1)

704

return dbus.Dictionary(all, signature="sv")

657

return dbus.Dictionary(all, signature=u"sv")

705

658

706

659

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

707

out_signature="s",

660

out_signature=u"s",

708

661

path_keyword='object_path',

709

662

connection_keyword='connection')

710

663

def Introspect(self, object_path, connection):

715

668

try:

716

669

document = xml.dom.minidom.parseString(xmlstring)

717

670

def make_tag(document, name, prop):

718

e = document.createElement("property")

719

e.setAttribute("name", name)

720

e.setAttribute("type", prop._dbus_signature)

721

e.setAttribute("access", prop._dbus_access)

671

e = document.createElement(u"property")

672

e.setAttribute(u"name", name)

673

e.setAttribute(u"type", prop._dbus_signature)

674

e.setAttribute(u"access", prop._dbus_access)

722

675

return e

723

for if_tag in document.getElementsByTagName("interface"):

676

for if_tag in document.getElementsByTagName(u"interface"):

724

677

for tag in (make_tag(document, name, prop)

725

678

for name, prop

726

679

in self._get_all_dbus_properties()

727

680

if prop._dbus_interface

728

== if_tag.getAttribute("name")):

681

== if_tag.getAttribute(u"name")):

729

682

if_tag.appendChild(tag)

730

683

# Add the names to the return values for the

731

684

# "org.freedesktop.DBus.Properties" methods

732

if (if_tag.getAttribute("name")

733

== "org.freedesktop.DBus.Properties"):

734

for cn in if_tag.getElementsByTagName("method"):

735

if cn.getAttribute("name") == "Get":

736

for arg in cn.getElementsByTagName("arg"):

737

if (arg.getAttribute("direction")

738

== "out"):

739

arg.setAttribute("name", "value")

740

elif cn.getAttribute("name") == "GetAll":

741

for arg in cn.getElementsByTagName("arg"):

742

if (arg.getAttribute("direction")

743

== "out"):

744

arg.setAttribute("name", "props")

745

xmlstring = document.toxml("utf-8")

685

if (if_tag.getAttribute(u"name")

686

== u"org.freedesktop.DBus.Properties"):

687

for cn in if_tag.getElementsByTagName(u"method"):

688

if cn.getAttribute(u"name") == u"Get":

689

for arg in cn.getElementsByTagName(u"arg"):

690

if (arg.getAttribute(u"direction")

691

== u"out"):

692

arg.setAttribute(u"name", u"value")

693

elif cn.getAttribute(u"name") == u"GetAll":

694

for arg in cn.getElementsByTagName(u"arg"):

695

if (arg.getAttribute(u"direction")

696

== u"out"):

697

arg.setAttribute(u"name", u"props")

698

xmlstring = document.toxml(u"utf-8")

746

699

document.unlink()

747

700

except (AttributeError, xml.dom.DOMException,

748

xml.parsers.expat.ExpatError) as error:

749

logger.error("Failed to override Introspection method",

701

xml.parsers.expat.ExpatError), error:

702

logger.error(u"Failed to override Introspection method",

750

703

error)

751

704

return xmlstring

752

705

760

713

"""

761

714

762

715

runtime_expansions = (Client.runtime_expansions

763

+ ("dbus_object_path",))

716

+ (u"dbus_object_path",))

764

717

765

718

# dbus.service.Object doesn't use super(), so we can't either.

766

719

770

723

Client.__init__(self, *args, **kwargs)

771

724

# Only now, when this client is initialized, can it show up on

772

725

# the D-Bus

773

client_object_name = unicode(self.name).translate(

774

{ord("."): ord("_"),

775

ord("-"): ord("_")})

776

726

self.dbus_object_path = (dbus.ObjectPath

777

("/clients/" + client_object_name))

727

(u"/clients/"

728

+ self.name.replace(u".", u"_")))

778

729

DBusObjectWithProperties.__init__(self, self.bus,

779

730

self.dbus_object_path)

780

def _set_expires(self, value):

781

old_value = getattr(self, "_expires", None)

782

self._expires = value

783

if hasattr(self, "dbus_object_path") and old_value != value:

784

dbus_time = (self._datetime_to_dbus(self._expires,

785

variant_level=1))

786

self.PropertyChanged(dbus.String("Expires"),

787

dbus_time)

788

expires = property(lambda self: self._expires, _set_expires)

789

del _set_expires

790

731

791

732

def _get_approvals_pending(self):

792

733

return self._approvals_pending

797

738

if (hasattr(self, "dbus_object_path")

798

739

and bval is not bool(old_value)):

799

740

dbus_bool = dbus.Boolean(bval, variant_level=1)

800

self.PropertyChanged(dbus.String("ApprovalPending"),

741

self.PropertyChanged(dbus.String(u"ApprovalPending"),

801

742

dbus_bool)

802

743

803

744

approvals_pending = property(_get_approvals_pending,

807

748

@staticmethod

808

749

def _datetime_to_dbus(dt, variant_level=0):

809

750

"""Convert a UTC datetime.datetime() to a D-Bus type."""

810

if dt is None:

811

return dbus.String("", variant_level = variant_level)

812

751

return dbus.String(dt.isoformat(),

813

752

variant_level=variant_level)

814

753

815

754

def enable(self):

816

oldstate = getattr(self, "enabled", False)

755

oldstate = getattr(self, u"enabled", False)

817

756

r = Client.enable(self)

818

757

if oldstate != self.enabled:

819

758

# Emit D-Bus signals

820

self.PropertyChanged(dbus.String("Enabled"),

759

self.PropertyChanged(dbus.String(u"Enabled"),

821

760

dbus.Boolean(True, variant_level=1))

822

761

self.PropertyChanged(

823

dbus.String("LastEnabled"),

762

dbus.String(u"LastEnabled"),

824

763

self._datetime_to_dbus(self.last_enabled,

825

764

variant_level=1))

826

765

return r

827

766

828

767

def disable(self, quiet = False):

829

oldstate = getattr(self, "enabled", False)

768

oldstate = getattr(self, u"enabled", False)

830

769

r = Client.disable(self, quiet=quiet)

831

770

if not quiet and oldstate != self.enabled:

832

771

# Emit D-Bus signal

833

self.PropertyChanged(dbus.String("Enabled"),

772

self.PropertyChanged(dbus.String(u"Enabled"),

834

773

dbus.Boolean(False, variant_level=1))

835

774

return r

836

775

839

778

self.remove_from_connection()

840

779

except LookupError:

841

780

pass

842

if hasattr(DBusObjectWithProperties, "__del__"):

781

if hasattr(DBusObjectWithProperties, u"__del__"):

843

782

DBusObjectWithProperties.__del__(self, *args, **kwargs)

844

783

Client.__del__(self, *args, **kwargs)

845

784

848

787

self.checker_callback_tag = None

849

788

self.checker = None

850

789

# Emit D-Bus signal

851

self.PropertyChanged(dbus.String("CheckerRunning"),

790

self.PropertyChanged(dbus.String(u"CheckerRunning"),

852

791

dbus.Boolean(False, variant_level=1))

853

792

if os.WIFEXITED(condition):

854

793

exitstatus = os.WEXITSTATUS(condition)

866

805

*args, **kwargs)

867

806

868

807

def checked_ok(self, *args, **kwargs):

869

Client.checked_ok(self, *args, **kwargs)

808

r = Client.checked_ok(self, *args, **kwargs)

870

809

# Emit D-Bus signal

871

810

self.PropertyChanged(

872

dbus.String("LastCheckedOK"),

811

dbus.String(u"LastCheckedOK"),

873

812

(self._datetime_to_dbus(self.last_checked_ok,

874

813

variant_level=1)))

875

876

def need_approval(self, *args, **kwargs):

877

r = Client.need_approval(self, *args, **kwargs)

878

# Emit D-Bus signal

879

self.PropertyChanged(

880

dbus.String("LastApprovalRequest"),

881

(self._datetime_to_dbus(self.last_approval_request,

882

variant_level=1)))

883

814

return r

884

815

885

816

def start_checker(self, *args, **kwargs):

895

826

# Emit D-Bus signal

896

827

self.CheckerStarted(self.current_checker_command)

897

828

self.PropertyChanged(

898

dbus.String("CheckerRunning"),

829

dbus.String(u"CheckerRunning"),

899

830

dbus.Boolean(True, variant_level=1))

900

831

return r

901

832

902

833

def stop_checker(self, *args, **kwargs):

903

old_checker = getattr(self, "checker", None)

834

old_checker = getattr(self, u"checker", None)

904

835

r = Client.stop_checker(self, *args, **kwargs)

905

836

if (old_checker is not None

906

and getattr(self, "checker", None) is None):

907

self.PropertyChanged(dbus.String("CheckerRunning"),

837

and getattr(self, u"checker", None) is None):

838

self.PropertyChanged(dbus.String(u"CheckerRunning"),

908

839

dbus.Boolean(False, variant_level=1))

909

840

return r

910

841

921

852

922

853

923

854

## D-Bus methods, signals & properties

924

_interface = "se.bsnet.fukt.Mandos.Client"

855

_interface = u"se.bsnet.fukt.Mandos.Client"

925

856

926

857

## Signals

927

858

928

859

# CheckerCompleted - signal

929

@dbus.service.signal(_interface, signature="nxs")

860

@dbus.service.signal(_interface, signature=u"nxs")

930

861

def CheckerCompleted(self, exitcode, waitstatus, command):

931

862

"D-Bus signal"

932

863

pass

933

864

934

865

# CheckerStarted - signal

935

@dbus.service.signal(_interface, signature="s")

866

@dbus.service.signal(_interface, signature=u"s")

936

867

def CheckerStarted(self, command):

937

868

"D-Bus signal"

938

869

pass

939

870

940

871

# PropertyChanged - signal

941

@dbus.service.signal(_interface, signature="sv")

872

@dbus.service.signal(_interface, signature=u"sv")

942

873

def PropertyChanged(self, property, value):

943

874

"D-Bus signal"

944

875

pass

953

884

pass

954

885

955

886

# Rejected - signal

956

@dbus.service.signal(_interface, signature="s")

887

@dbus.service.signal(_interface, signature=u"s")

957

888

def Rejected(self, reason):

958

889

"D-Bus signal"

959

890

pass

960

891

961

892

# NeedApproval - signal

962

@dbus.service.signal(_interface, signature="tb")

893

@dbus.service.signal(_interface, signature=u"tb")

963

894

def NeedApproval(self, timeout, default):

964

895

"D-Bus signal"

965

return self.need_approval()

896

pass

966

897

967

898

## Methods

968

899

969

900

# Approve - method

970

@dbus.service.method(_interface, in_signature="b")

901

@dbus.service.method(_interface, in_signature=u"b")

971

902

def Approve(self, value):

972

903

self.approve(value)

973

904

974

905

# CheckedOK - method

975

906

@dbus.service.method(_interface)

976

907

def CheckedOK(self):

977

self.checked_ok()

908

return self.checked_ok()

978

909

979

910

# Enable - method

980

911

@dbus.service.method(_interface)

1002

933

## Properties

1003

934

1004

935

# ApprovalPending - property

1005

@dbus_service_property(_interface, signature="b", access="read")

936

@dbus_service_property(_interface, signature=u"b", access=u"read")

1006

937

def ApprovalPending_dbus_property(self):

1007

938

return dbus.Boolean(bool(self.approvals_pending))

1008

939

1009

940

# ApprovedByDefault - property

1010

@dbus_service_property(_interface, signature="b",

1011

access="readwrite")

941

@dbus_service_property(_interface, signature=u"b",

942

access=u"readwrite")

1012

943

def ApprovedByDefault_dbus_property(self, value=None):

1013

944

if value is None: # get

1014

945

return dbus.Boolean(self.approved_by_default)

1015

old_value = self.approved_by_default

1016

946

self.approved_by_default = bool(value)

1017

947

# Emit D-Bus signal

1018

if old_value != self.approved_by_default:

1019

self.PropertyChanged(dbus.String("ApprovedByDefault"),

1020

dbus.Boolean(value, variant_level=1))

948

self.PropertyChanged(dbus.String(u"ApprovedByDefault"),

949

dbus.Boolean(value, variant_level=1))

1021

950

1022

951

# ApprovalDelay - property

1023

@dbus_service_property(_interface, signature="t",

1024

access="readwrite")

952

@dbus_service_property(_interface, signature=u"t",

953

access=u"readwrite")

1025

954

def ApprovalDelay_dbus_property(self, value=None):

1026

955

if value is None: # get

1027

956

return dbus.UInt64(self.approval_delay_milliseconds())

1028

old_value = self.approval_delay

1029

957

self.approval_delay = datetime.timedelta(0, 0, 0, value)

1030

958

# Emit D-Bus signal

1031

if old_value != self.approval_delay:

1032

self.PropertyChanged(dbus.String("ApprovalDelay"),

1033

dbus.UInt64(value, variant_level=1))

959

self.PropertyChanged(dbus.String(u"ApprovalDelay"),

960

dbus.UInt64(value, variant_level=1))

1034

961

1035

962

# ApprovalDuration - property

1036

@dbus_service_property(_interface, signature="t",

1037

access="readwrite")

963

@dbus_service_property(_interface, signature=u"t",

964

access=u"readwrite")

1038

965

def ApprovalDuration_dbus_property(self, value=None):

1039

966

if value is None: # get

1040

967

return dbus.UInt64(self._timedelta_to_milliseconds(

1041

968

self.approval_duration))

1042

old_value = self.approval_duration

1043

969

self.approval_duration = datetime.timedelta(0, 0, 0, value)

1044

970

# Emit D-Bus signal

1045

if old_value != self.approval_duration:

1046

self.PropertyChanged(dbus.String("ApprovalDuration"),

1047

dbus.UInt64(value, variant_level=1))

971

self.PropertyChanged(dbus.String(u"ApprovalDuration"),

972

dbus.UInt64(value, variant_level=1))

1048

973

1049

974

# Name - property

1050

@dbus_service_property(_interface, signature="s", access="read")

975

@dbus_service_property(_interface, signature=u"s", access=u"read")

1051

976

def Name_dbus_property(self):

1052

977

return dbus.String(self.name)

1053

978

1054

979

# Fingerprint - property

1055

@dbus_service_property(_interface, signature="s", access="read")

980

@dbus_service_property(_interface, signature=u"s", access=u"read")

1056

981

def Fingerprint_dbus_property(self):

1057

982

return dbus.String(self.fingerprint)

1058

983

1059

984

# Host - property

1060

@dbus_service_property(_interface, signature="s",

1061

access="readwrite")

985

@dbus_service_property(_interface, signature=u"s",

986

access=u"readwrite")

1062

987

def Host_dbus_property(self, value=None):

1063

988

if value is None: # get

1064

989

return dbus.String(self.host)

1065

old_value = self.host

1066

990

self.host = value

1067

991

# Emit D-Bus signal

1068

if old_value != self.host:

1069

self.PropertyChanged(dbus.String("Host"),

1070

dbus.String(value, variant_level=1))

992

self.PropertyChanged(dbus.String(u"Host"),

993

dbus.String(value, variant_level=1))

1071

994

1072

995

# Created - property

1073

@dbus_service_property(_interface, signature="s", access="read")

996

@dbus_service_property(_interface, signature=u"s", access=u"read")

1074

997

def Created_dbus_property(self):

1075

998

return dbus.String(self._datetime_to_dbus(self.created))

1076

999

1077

1000

# LastEnabled - property

1078

@dbus_service_property(_interface, signature="s", access="read")

1001

@dbus_service_property(_interface, signature=u"s", access=u"read")

1079

1002

def LastEnabled_dbus_property(self):

1080

return self._datetime_to_dbus(self.last_enabled)

1003

if self.last_enabled is None:

1004

return dbus.String(u"")

1005

return dbus.String(self._datetime_to_dbus(self.last_enabled))

1081

1006

1082

1007

# Enabled - property

1083

@dbus_service_property(_interface, signature="b",

1084

access="readwrite")

1008

@dbus_service_property(_interface, signature=u"b",

1009

access=u"readwrite")

1085

1010

def Enabled_dbus_property(self, value=None):

1086

1011

if value is None: # get

1087

1012

return dbus.Boolean(self.enabled)

1091

1016

self.disable()

1092

1017

1093

1018

# LastCheckedOK - property

1094

@dbus_service_property(_interface, signature="s",

1095

access="readwrite")

1019

@dbus_service_property(_interface, signature=u"s",

1020

access=u"readwrite")

1096

1021

def LastCheckedOK_dbus_property(self, value=None):

1097

1022

if value is not None:

1098

1023

self.checked_ok()

1099

1024

return

1100

return self._datetime_to_dbus(self.last_checked_ok)

1101

1102

# Expires - property

1103

@dbus_service_property(_interface, signature="s", access="read")

1104

def Expires_dbus_property(self):

1105

return self._datetime_to_dbus(self.expires)

1106

1107

# LastApprovalRequest - property

1108

@dbus_service_property(_interface, signature="s", access="read")

1109

def LastApprovalRequest_dbus_property(self):

1110

return self._datetime_to_dbus(self.last_approval_request)

1025

if self.last_checked_ok is None:

1026

return dbus.String(u"")

1027

return dbus.String(self._datetime_to_dbus(self

1028

.last_checked_ok))

1111

1029

1112

1030

# Timeout - property

1113

@dbus_service_property(_interface, signature="t",

1114

access="readwrite")

1031

@dbus_service_property(_interface, signature=u"t",

1032

access=u"readwrite")

1115

1033

def Timeout_dbus_property(self, value=None):

1116

1034

if value is None: # get

1117

1035

return dbus.UInt64(self.timeout_milliseconds())

1118

old_value = self.timeout

1119

1036

self.timeout = datetime.timedelta(0, 0, 0, value)

1120

1037

# Emit D-Bus signal

1121

if old_value != self.timeout:

1122

self.PropertyChanged(dbus.String("Timeout"),

1123

dbus.UInt64(value, variant_level=1))

1124

if getattr(self, "disable_initiator_tag", None) is None:

1038

self.PropertyChanged(dbus.String(u"Timeout"),

1039

dbus.UInt64(value, variant_level=1))

1040

if getattr(self, u"disable_initiator_tag", None) is None:

1125

1041

return

1126

1042

# Reschedule timeout

1127

1043

gobject.source_remove(self.disable_initiator_tag)

1128

1044

self.disable_initiator_tag = None

1129

self.expires = None

1130

1045

time_to_die = (self.

1131

1046

_timedelta_to_milliseconds((self

1132

1047

.last_checked_ok

1137

1052

# The timeout has passed

1138

1053

self.disable()

1139

1054

else:

1140

self.expires = (datetime.datetime.utcnow()

1141

+ datetime.timedelta(milliseconds = time_to_die))

1142

1055

self.disable_initiator_tag = (gobject.timeout_add

1143

1056

(time_to_die, self.disable))

1144

1145

# ExtendedTimeout - property

1146

@dbus_service_property(_interface, signature="t",

1147

access="readwrite")

1148

def ExtendedTimeout_dbus_property(self, value=None):

1149

if value is None: # get

1150

return dbus.UInt64(self.extended_timeout_milliseconds())

1151

old_value = self.extended_timeout

1152

self.extended_timeout = datetime.timedelta(0, 0, 0, value)

1153

# Emit D-Bus signal

1154

if old_value != self.extended_timeout:

1155

self.PropertyChanged(dbus.String("ExtendedTimeout"),

1156

dbus.UInt64(value, variant_level=1))

1157

1057

1158

1058

# Interval - property

1159

@dbus_service_property(_interface, signature="t",

1160

access="readwrite")

1059

@dbus_service_property(_interface, signature=u"t",

1060

access=u"readwrite")

1161

1061

def Interval_dbus_property(self, value=None):

1162

1062

if value is None: # get

1163

1063

return dbus.UInt64(self.interval_milliseconds())

1164

old_value = self.interval

1165

1064

self.interval = datetime.timedelta(0, 0, 0, value)

1166

1065

# Emit D-Bus signal

1167

if old_value != self.interval:

1168

self.PropertyChanged(dbus.String("Interval"),

1169

dbus.UInt64(value, variant_level=1))

1170

if getattr(self, "checker_initiator_tag", None) is None:

1066

self.PropertyChanged(dbus.String(u"Interval"),

1067

dbus.UInt64(value, variant_level=1))

1068

if getattr(self, u"checker_initiator_tag", None) is None:

1171

1069

return

1172

1070

# Reschedule checker run

1173

1071

gobject.source_remove(self.checker_initiator_tag)

1176

1074

self.start_checker() # Start one now, too

1177

1075

1178

1076

# Checker - property

1179

@dbus_service_property(_interface, signature="s",

1180

access="readwrite")

1077

@dbus_service_property(_interface, signature=u"s",

1078

access=u"readwrite")

1181

1079

def Checker_dbus_property(self, value=None):

1182

1080

if value is None: # get

1183

1081

return dbus.String(self.checker_command)

1184

old_value = self.checker_command

1185

1082

self.checker_command = value

1186

1083

# Emit D-Bus signal

1187

if old_value != self.checker_command:

1188

self.PropertyChanged(dbus.String("Checker"),

1189

dbus.String(self.checker_command,

1190

variant_level=1))

1084

self.PropertyChanged(dbus.String(u"Checker"),

1085

dbus.String(self.checker_command,

1086

variant_level=1))

1191

1087

1192

1088

# CheckerRunning - property

1193

@dbus_service_property(_interface, signature="b",

1194

access="readwrite")

1089

@dbus_service_property(_interface, signature=u"b",

1090

access=u"readwrite")

1195

1091

def CheckerRunning_dbus_property(self, value=None):

1196

1092

if value is None: # get

1197

1093

return dbus.Boolean(self.checker is not None)

1201

1097

self.stop_checker()

1202

1098

1203

1099

# ObjectPath - property

1204

@dbus_service_property(_interface, signature="o", access="read")

1100

@dbus_service_property(_interface, signature=u"o", access=u"read")

1205

1101

def ObjectPath_dbus_property(self):

1206

1102

return self.dbus_object_path # is already a dbus.ObjectPath

1207

1103

1208

1104

# Secret = property

1209

@dbus_service_property(_interface, signature="ay",

1210

access="write", byte_arrays=True)

1105

@dbus_service_property(_interface, signature=u"ay",

1106

access=u"write", byte_arrays=True)

1211

1107

def Secret_dbus_property(self, value):

1212

1108

self.secret = str(value)

1213

1109

1248

1144

1249

1145

def handle(self):

1250

1146

with contextlib.closing(self.server.child_pipe) as child_pipe:

1251

logger.info("TCP connection from: %s",

1147

logger.info(u"TCP connection from: %s",

1252

1148

unicode(self.client_address))

1253

logger.debug("Pipe FD: %d",

1149

logger.debug(u"Pipe FD: %d",

1254

1150

self.server.child_pipe.fileno())

1255

1151

1256

1152

session = (gnutls.connection

1263

1159

# no X.509 keys are added to it. Therefore, we can use it

1264

1160

# here despite using OpenPGP certificates.

1265

1161

1266

#priority = ':'.join(("NONE", "+VERS-TLS1.1",

1267

# "+AES-256-CBC", "+SHA1",

1268

# "+COMP-NULL", "+CTYPE-OPENPGP",

1269

# "+DHE-DSS"))

1162

#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",

1163

# u"+AES-256-CBC", u"+SHA1",

1164

# u"+COMP-NULL", u"+CTYPE-OPENPGP",

1165

# u"+DHE-DSS"))

1270

1166

# Use a fallback default, since this MUST be set.

1271

1167

priority = self.server.gnutls_priority

1272

1168

if priority is None:

1273

priority = "NORMAL"

1169

priority = u"NORMAL"

1274

1170

(gnutls.library.functions

1275

1171

.gnutls_priority_set_direct(session._c_object,

1276

1172

priority, None))

1278

1174

# Start communication using the Mandos protocol

1279

1175

# Get protocol number

1280

1176

line = self.request.makefile().readline()

1281

logger.debug("Protocol version: %r", line)

1177

logger.debug(u"Protocol version: %r", line)

1282

1178

try:

1283

1179

if int(line.strip().split()[0]) > 1:

1284

1180

raise RuntimeError

1285

except (ValueError, IndexError, RuntimeError) as error:

1286

logger.error("Unknown protocol version: %s", error)

1181

except (ValueError, IndexError, RuntimeError), error:

1182

logger.error(u"Unknown protocol version: %s", error)

1287

1183

return

1288

1184

1289

1185

# Start GnuTLS connection

1290

1186

try:

1291

1187

session.handshake()

1292

except gnutls.errors.GNUTLSError as error:

1293

logger.warning("Handshake failed: %s", error)

1188

except gnutls.errors.GNUTLSError, error:

1189

logger.warning(u"Handshake failed: %s", error)

1294

1190

# Do not run session.bye() here: the session is not

1295

1191

# established. Just abandon the request.

1296

1192

return

1297

logger.debug("Handshake succeeded")

1193

logger.debug(u"Handshake succeeded")

1298

1194

1299

1195

approval_required = False

1300

1196

try:

1301

1197

try:

1302

1198

fpr = self.fingerprint(self.peer_certificate

1303

1199

(session))

1304

except (TypeError,

1305

gnutls.errors.GNUTLSError) as error:

1306

logger.warning("Bad certificate: %s", error)

1200

except (TypeError, gnutls.errors.GNUTLSError), error:

1201

logger.warning(u"Bad certificate: %s", error)

1307

1202

return

1308

logger.debug("Fingerprint: %s", fpr)

1203

logger.debug(u"Fingerprint: %s", fpr)

1309

1204

1310

1205

try:

1311

1206

client = ProxyClient(child_pipe, fpr,

1320

1215

1321

1216

while True:

1322

1217

if not client.enabled:

1323

logger.info("Client %s is disabled",

1218

logger.warning(u"Client %s is disabled",

1324

1219

client.name)

1325

1220

if self.server.use_dbus:

1326

1221

# Emit D-Bus signal

1331

1226

#We are approved or approval is disabled

1332

1227

break

1333

1228

elif client._approved is None:

1334

logger.info("Client %s needs approval",

1229

logger.info(u"Client %s needs approval",

1335

1230

client.name)

1336

1231

if self.server.use_dbus:

1337

1232

# Emit D-Bus signal

1339

1234

client.approval_delay_milliseconds(),

1340

1235

client.approved_by_default)

1341

1236

else:

1342

logger.warning("Client %s was not approved",

1237

logger.warning(u"Client %s was not approved",

1343

1238

client.name)

1344

1239

if self.server.use_dbus:

1345

1240

# Emit D-Bus signal

1371

1266

while sent_size < len(client.secret):

1372

1267

try:

1373

1268

sent = session.send(client.secret[sent_size:])

1374

except gnutls.errors.GNUTLSError as error:

1269

except (gnutls.errors.GNUTLSError), error:

1375

1270

logger.warning("gnutls send failed")

1376

1271

return

1377

logger.debug("Sent: %d, remaining: %d",

1272

logger.debug(u"Sent: %d, remaining: %d",

1378

1273

sent, len(client.secret)

1379

1274

- (sent_size + sent))

1380

1275

sent_size += sent

1381

1276

1382

logger.info("Sending secret to %s", client.name)

1277

logger.info(u"Sending secret to %s", client.name)

1383

1278

# bump the timeout as if seen

1384

client.checked_ok(client.extended_timeout)

1279

client.checked_ok()

1385

1280

if self.server.use_dbus:

1386

1281

# Emit D-Bus signal

1387

1282

client.GotSecret()

1391

1286

client.approvals_pending -= 1

1392

1287

try:

1393

1288

session.bye()

1394

except gnutls.errors.GNUTLSError as error:

1289

except (gnutls.errors.GNUTLSError), error:

1395

1290

logger.warning("GnuTLS bye failed")

1396

1291

1397

1292

@staticmethod

1408

1303

.gnutls_certificate_get_peers

1409

1304

(session._c_object, ctypes.byref(list_size)))

1410

1305

if not bool(cert_list) and list_size.value != 0:

1411

raise gnutls.errors.GNUTLSError("error getting peer"

1412

" certificate")

1306

raise gnutls.errors.GNUTLSError(u"error getting peer"

1307

u" certificate")

1413

1308

if list_size.value == 0:

1414

1309

return None

1415

1310

cert = cert_list[0]

1441

1336

if crtverify.value != 0:

1442

1337

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1443

1338

raise (gnutls.errors.CertificateSecurityError

1444

("Verify failed"))

1339

(u"Verify failed"))

1445

1340

# New buffer for the fingerprint

1446

1341

buf = ctypes.create_string_buffer(20)

1447

1342

buf_len = ctypes.c_size_t()

1454

1349

# Convert the buffer to a Python bytestring

1455

1350

fpr = ctypes.string_at(buf, buf_len.value)

1456

1351

# Convert the bytestring to hexadecimal notation

1457

hex_fpr = ''.join("%02X" % ord(char) for char in fpr)

1352

hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)

1458

1353

return hex_fpr

1459

1354

1460

1355

1488

1383

1489

1384

def add_pipe(self, parent_pipe):

1490

1385

"""Dummy function; override as necessary"""

1491

raise NotImplementedError

1386

pass

1492

1387

1493

1388

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

1494

1389

socketserver.TCPServer, object):

1512

1407

bind to an address or port if they were not specified."""

1513

1408

if self.interface is not None:

1514

1409

if SO_BINDTODEVICE is None:

1515

logger.error("SO_BINDTODEVICE does not exist;"

1516

" cannot bind to interface %s",

1410

logger.error(u"SO_BINDTODEVICE does not exist;"

1411

u" cannot bind to interface %s",

1517

1412

self.interface)

1518

1413

else:

1519

1414

try:

1520

1415

self.socket.setsockopt(socket.SOL_SOCKET,

1521

1416

SO_BINDTODEVICE,

1522

1417

str(self.interface

1523

+ '\0'))

1524

except socket.error as error:

1418

+ u'\0'))

1419

except socket.error, error:

1525

1420

if error[0] == errno.EPERM:

1526

logger.error("No permission to"

1527

" bind to interface %s",

1421

logger.error(u"No permission to"

1422

u" bind to interface %s",

1528

1423

self.interface)

1529

1424

elif error[0] == errno.ENOPROTOOPT:

1530

logger.error("SO_BINDTODEVICE not available;"

1531

" cannot bind to interface %s",

1425

logger.error(u"SO_BINDTODEVICE not available;"

1426

u" cannot bind to interface %s",

1532

1427

self.interface)

1533

1428

else:

1534

1429

raise

1536

1431

if self.server_address[0] or self.server_address[1]:

1537

1432

if not self.server_address[0]:

1538

1433

if self.address_family == socket.AF_INET6:

1539

any_address = "::" # in6addr_any

1434

any_address = u"::" # in6addr_any

1540

1435

else:

1541

1436

any_address = socket.INADDR_ANY

1542

1437

self.server_address = (any_address,

1591

1486

def handle_ipc(self, source, condition, parent_pipe=None,

1592

1487

client_object=None):

1593

1488

condition_names = {

1594

gobject.IO_IN: "IN", # There is data to read.

1595

gobject.IO_OUT: "OUT", # Data can be written (without

1489

gobject.IO_IN: u"IN", # There is data to read.

1490

gobject.IO_OUT: u"OUT", # Data can be written (without

1596

1491

# blocking).

1597

gobject.IO_PRI: "PRI", # There is urgent data to read.

1598

gobject.IO_ERR: "ERR", # Error condition.

1599

gobject.IO_HUP: "HUP" # Hung up (the connection has been

1492

gobject.IO_PRI: u"PRI", # There is urgent data to read.

1493

gobject.IO_ERR: u"ERR", # Error condition.

1494

gobject.IO_HUP: u"HUP" # Hung up (the connection has been

1600

1495

# broken, usually for pipes and

1601

1496

# sockets).

1602

1497

}

1621

1516

client = c

1622

1517

break

1623

1518

else:

1624

logger.info("Client not found for fingerprint: %s, ad"

1625

"dress: %s", fpr, address)

1519

logger.warning(u"Client not found for fingerprint: %s, ad"

1520

u"dress: %s", fpr, address)

1626

1521

if self.use_dbus:

1627

1522

# Emit D-Bus signal

1628

mandos_dbus_service.ClientNotFound(fpr, address[0])

1523

mandos_dbus_service.ClientNotFound(fpr, address)

1629

1524

parent_pipe.send(False)

1630

1525

return False

1631

1526

1662

1557

def string_to_delta(interval):

1663

1558

"""Parse a string and return a datetime.timedelta

1664

1559

1665

>>> string_to_delta('7d')

1560

>>> string_to_delta(u'7d')

1666

1561

datetime.timedelta(7)

1667

>>> string_to_delta('60s')

1562

>>> string_to_delta(u'60s')

1668

1563

datetime.timedelta(0, 60)

1669

>>> string_to_delta('60m')

1564

>>> string_to_delta(u'60m')

1670

1565

datetime.timedelta(0, 3600)

1671

>>> string_to_delta('24h')

1566

>>> string_to_delta(u'24h')

1672

1567

datetime.timedelta(1)

1673

>>> string_to_delta('1w')

1568

>>> string_to_delta(u'1w')

1674

1569

datetime.timedelta(7)

1675

>>> string_to_delta('5m 30s')

1570

>>> string_to_delta(u'5m 30s')

1676

1571

datetime.timedelta(0, 330)

1677

1572

"""

1678

1573

timevalue = datetime.timedelta(0)

1680

1575

try:

1681

1576

suffix = unicode(s[-1])

1682

1577

value = int(s[:-1])

1683

if suffix == "d":

1578

if suffix == u"d":

1684

1579

delta = datetime.timedelta(value)

1685

elif suffix == "s":

1580

elif suffix == u"s":

1686

1581

delta = datetime.timedelta(0, value)

1687

elif suffix == "m":

1582

elif suffix == u"m":

1688

1583

delta = datetime.timedelta(0, 0, 0, 0, value)

1689

elif suffix == "h":

1584

elif suffix == u"h":

1690

1585

delta = datetime.timedelta(0, 0, 0, 0, 0, value)

1691

elif suffix == "w":

1586

elif suffix == u"w":

1692

1587

delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)

1693

1588

else:

1694

raise ValueError("Unknown suffix %r" % suffix)

1695

except (ValueError, IndexError) as e:

1696

raise ValueError(*(e.args))

1589

raise ValueError(u"Unknown suffix %r" % suffix)

1590

except (ValueError, IndexError), e:

1591

raise ValueError(e.message)

1697

1592

timevalue += delta

1698

1593

return timevalue

1699

1594

1705

1600

global if_nametoindex

1706

1601

try:

1707

1602

if_nametoindex = (ctypes.cdll.LoadLibrary

1708

(ctypes.util.find_library("c"))

1603

(ctypes.util.find_library(u"c"))

1709

1604

.if_nametoindex)

1710

1605

except (OSError, AttributeError):

1711

logger.warning("Doing if_nametoindex the hard way")

1606

logger.warning(u"Doing if_nametoindex the hard way")

1712

1607

def if_nametoindex(interface):

1713

1608

"Get an interface index the hard way, i.e. using fcntl()"

1714

1609

SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h

1715

1610

with contextlib.closing(socket.socket()) as s:

1716

1611

ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

1717

struct.pack(str("16s16x"),

1612

struct.pack(str(u"16s16x"),

1718

1613

interface))

1719

interface_index = struct.unpack(str("I"),

1614

interface_index = struct.unpack(str(u"I"),

1720

1615

ifreq[16:20])[0]

1721

1616

return interface_index

1722

1617

return if_nametoindex(interface)

1730

1625

sys.exit()

1731

1626

os.setsid()

1732

1627

if not nochdir:

1733

os.chdir("/")

1628

os.chdir(u"/")

1734

1629

if os.fork():

1735

1630

sys.exit()

1736

1631

if not noclose:

1738

1633

null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)

1739

1634

if not stat.S_ISCHR(os.fstat(null).st_mode):

1740

1635

raise OSError(errno.ENODEV,

1741

"%s not a character device"

1636

u"%s not a character device"

1742

1637

% os.path.devnull)

1743

1638

os.dup2(null, sys.stdin.fileno())

1744

1639

os.dup2(null, sys.stdout.fileno())

1752

1647

##################################################################

1753

1648

# Parsing of options, both command line and config file

1754

1649

1755

parser = argparse.ArgumentParser()

1756

parser.add_argument("-v", "--version", action="version",

1757

version = "%%(prog)s %s" % version,

1758

help="show version number and exit")

1759

parser.add_argument("-i", "--interface", metavar="IF",

1760

help="Bind to interface IF")

1761

parser.add_argument("-a", "--address",

1762

help="Address to listen for requests on")

1763

parser.add_argument("-p", "--port", type=int,

1764

help="Port number to receive requests on")

1765

parser.add_argument("--check", action="store_true",

1766

help="Run self-test")

1767

parser.add_argument("--debug", action="store_true",

1768

help="Debug mode; run in foreground and log"

1769

" to terminal")

1770

parser.add_argument("--debuglevel", metavar="LEVEL",

1771

help="Debug level for stdout output")

1772

parser.add_argument("--priority", help="GnuTLS"

1773

" priority string (see GnuTLS documentation)")

1774

parser.add_argument("--servicename",

1775

metavar="NAME", help="Zeroconf service name")

1776

parser.add_argument("--configdir",

1777

default="/etc/mandos", metavar="DIR",

1778

help="Directory to search for configuration"

1779

" files")

1780

parser.add_argument("--no-dbus", action="store_false",

1781

dest="use_dbus", help="Do not provide D-Bus"

1782

" system bus interface")

1783

parser.add_argument("--no-ipv6", action="store_false",

1784

dest="use_ipv6", help="Do not use IPv6")

1785

options = parser.parse_args()

1650

parser = optparse.OptionParser(version = "%%prog %s" % version)

1651

parser.add_option("-i", u"--interface", type=u"string",

1652

metavar="IF", help=u"Bind to interface IF")

1653

parser.add_option("-a", u"--address", type=u"string",

1654

help=u"Address to listen for requests on")

1655

parser.add_option("-p", u"--port", type=u"int",

1656

help=u"Port number to receive requests on")

1657

parser.add_option("--check", action=u"store_true",

1658

help=u"Run self-test")

1659

parser.add_option("--debug", action=u"store_true",

1660

help=u"Debug mode; run in foreground and log to"

1661

u" terminal")

1662

parser.add_option("--debuglevel", type=u"string", metavar="Level",

1663

help=u"Debug level for stdout output")

1664

parser.add_option("--priority", type=u"string", help=u"GnuTLS"

1665

u" priority string (see GnuTLS documentation)")

1666

parser.add_option("--servicename", type=u"string",

1667

metavar=u"NAME", help=u"Zeroconf service name")

1668

parser.add_option("--configdir", type=u"string",

1669

default=u"/etc/mandos", metavar=u"DIR",

1670

help=u"Directory to search for configuration"

1671

u" files")

1672

parser.add_option("--no-dbus", action=u"store_false",

1673

dest=u"use_dbus", help=u"Do not provide D-Bus"

1674

u" system bus interface")

1675

parser.add_option("--no-ipv6", action=u"store_false",

1676

dest=u"use_ipv6", help=u"Do not use IPv6")

1677

options = parser.parse_args()[0]

1786

1678

1787

1679

if options.check:

1788

1680

import doctest

1790

1682

sys.exit()

1791

1683

1792

1684

# Default values for config file for server-global settings

1793

server_defaults = { "interface": "",

1794

"address": "",

1795

"port": "",

1796

"debug": "False",

1797

"priority":

1798

"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",

1799

"servicename": "Mandos",

1800

"use_dbus": "True",

1801

"use_ipv6": "True",

1802

"debuglevel": "",

1685

server_defaults = { u"interface": u"",

1686

u"address": u"",

1687

u"port": u"",

1688

u"debug": u"False",

1689

u"priority":

1690

u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",

1691

u"servicename": u"Mandos",

1692

u"use_dbus": u"True",

1693

u"use_ipv6": u"True",

1694

u"debuglevel": u"",

1803

1695

}

1804

1696

1805

1697

# Parse config file for server-global settings

1806

1698

server_config = configparser.SafeConfigParser(server_defaults)

1807

1699

del server_defaults

1808

1700

server_config.read(os.path.join(options.configdir,

1809

"mandos.conf"))

1701

u"mandos.conf"))

1810

1702

# Convert the SafeConfigParser object to a dict

1811

1703

server_settings = server_config.defaults()

1812

1704

# Use the appropriate methods on the non-string config options

1813

for option in ("debug", "use_dbus", "use_ipv6"):

1814

server_settings[option] = server_config.getboolean("DEFAULT",

1705

for option in (u"debug", u"use_dbus", u"use_ipv6"):

1706

server_settings[option] = server_config.getboolean(u"DEFAULT",

1815

1707

option)

1816

1708

if server_settings["port"]:

1817

server_settings["port"] = server_config.getint("DEFAULT",

1818

"port")

1709

server_settings["port"] = server_config.getint(u"DEFAULT",

1710

u"port")

1819

1711

del server_config

1820

1712

1821

1713

# Override the settings from the config file with command line

1822

1714

# options, if set.

1823

for option in ("interface", "address", "port", "debug",

1824

"priority", "servicename", "configdir",

1825

"use_dbus", "use_ipv6", "debuglevel"):

1715

for option in (u"interface", u"address", u"port", u"debug",

1716

u"priority", u"servicename", u"configdir",

1717

u"use_dbus", u"use_ipv6", u"debuglevel"):

1826

1718

value = getattr(options, option)

1827

1719

if value is not None:

1828

1720

server_settings[option] = value

1836

1728

##################################################################

1837

1729

1838

1730

# For convenience

1839

debug = server_settings["debug"]

1840

debuglevel = server_settings["debuglevel"]

1841

use_dbus = server_settings["use_dbus"]

1842

use_ipv6 = server_settings["use_ipv6"]

1731

debug = server_settings[u"debug"]

1732

debuglevel = server_settings[u"debuglevel"]

1733

use_dbus = server_settings[u"use_dbus"]

1734

use_ipv6 = server_settings[u"use_ipv6"]

1843

1735

1844

if server_settings["servicename"] != "Mandos":

1736

if server_settings[u"servicename"] != u"Mandos":

1845

1737

syslogger.setFormatter(logging.Formatter

1846

('Mandos (%s) [%%(process)d]:'

1847

' %%(levelname)s: %%(message)s'

1848

% server_settings["servicename"]))

1738

(u'Mandos (%s) [%%(process)d]:'

1739

u' %%(levelname)s: %%(message)s'

1740

% server_settings[u"servicename"]))

1849

1741

1850

1742

# Parse config file with clients

1851

client_defaults = { "timeout": "5m",

1852

"extended_timeout": "15m",

1853

"interval": "2m",

1854

"checker": "fping -q -- %%(host)s",

1855

"host": "",

1856

"approval_delay": "0s",

1857

"approval_duration": "1s",

1743

client_defaults = { u"timeout": u"1h",

1744

u"interval": u"5m",

1745

u"checker": u"fping -q -- %%(host)s",

1746

u"host": u"",

1747

u"approval_delay": u"0s",

1748

u"approval_duration": u"1s",

1858

1749

}

1859

1750

client_config = configparser.SafeConfigParser(client_defaults)

1860

client_config.read(os.path.join(server_settings["configdir"],

1861

"clients.conf"))

1751

client_config.read(os.path.join(server_settings[u"configdir"],

1752

u"clients.conf"))

1862

1753

1863

1754

global mandos_dbus_service

1864

1755

mandos_dbus_service = None

1865

1756

1866

tcp_server = MandosServer((server_settings["address"],

1867

server_settings["port"]),

1757

tcp_server = MandosServer((server_settings[u"address"],

1758

server_settings[u"port"]),

1868

1759

ClientHandler,

1869

interface=(server_settings["interface"]

1760

interface=(server_settings[u"interface"]

1870

1761

or None),

1871

1762

use_ipv6=use_ipv6,

1872

1763

gnutls_priority=

1873

server_settings["priority"],

1764

server_settings[u"priority"],

1874

1765

use_dbus=use_dbus)

1875

1766

if not debug:

1876

pidfilename = "/var/run/mandos.pid"

1767

pidfilename = u"/var/run/mandos.pid"

1877

1768

try:

1878

pidfile = open(pidfilename, "w")

1769

pidfile = open(pidfilename, u"w")

1879

1770

except IOError:

1880

logger.error("Could not open file %r", pidfilename)

1771

logger.error(u"Could not open file %r", pidfilename)

1881

1772

1882

1773

try:

1883

uid = pwd.getpwnam("_mandos").pw_uid

1884

gid = pwd.getpwnam("_mandos").pw_gid

1774

uid = pwd.getpwnam(u"_mandos").pw_uid

1775

gid = pwd.getpwnam(u"_mandos").pw_gid

1885

1776

except KeyError:

1886

1777

try:

1887

uid = pwd.getpwnam("mandos").pw_uid

1888

gid = pwd.getpwnam("mandos").pw_gid

1778

uid = pwd.getpwnam(u"mandos").pw_uid

1779

gid = pwd.getpwnam(u"mandos").pw_gid

1889

1780

except KeyError:

1890

1781

try:

1891

uid = pwd.getpwnam("nobody").pw_uid

1892

gid = pwd.getpwnam("nobody").pw_gid

1782

uid = pwd.getpwnam(u"nobody").pw_uid

1783

gid = pwd.getpwnam(u"nobody").pw_gid

1893

1784

except KeyError:

1894

1785

uid = 65534

1895

1786

gid = 65534

1896

1787

try:

1897

1788

os.setgid(gid)

1898

1789

os.setuid(uid)

1899

except OSError as error:

1790

except OSError, error:

1900

1791

if error[0] != errno.EPERM:

1901

1792

raise error

1902

1793

1917

1808

1918

1809

@gnutls.library.types.gnutls_log_func

1919

1810

def debug_gnutls(level, string):

1920

logger.debug("GnuTLS: %s", string[:-1])

1811

logger.debug(u"GnuTLS: %s", string[:-1])

1921

1812

1922

1813

(gnutls.library.functions

1923

1814

.gnutls_global_set_log_function(debug_gnutls))

1931

1822

# No console logging

1932

1823

logger.removeHandler(console)

1933

1824

1934

# Need to fork before connecting to D-Bus

1935

if not debug:

1936

# Close all input and output, do double fork, etc.

1937

daemon()

1938

1825

1939

1826

global main_loop

1940

1827

# From the Avahi example code

1944

1831

# End of Avahi example code

1945

1832

if use_dbus:

1946

1833

try:

1947

bus_name = dbus.service.BusName("se.bsnet.fukt.Mandos",

1834

bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",

1948

1835

bus, do_not_queue=True)

1949

except dbus.exceptions.NameExistsException as e:

1950

logger.error(unicode(e) + ", disabling D-Bus")

1836

except dbus.exceptions.NameExistsException, e:

1837

logger.error(unicode(e) + u", disabling D-Bus")

1951

1838

use_dbus = False

1952

server_settings["use_dbus"] = False

1839

server_settings[u"use_dbus"] = False

1953

1840

tcp_server.use_dbus = False

1954

1841

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

1955

service = AvahiService(name = server_settings["servicename"],

1956

servicetype = "_mandos._tcp",

1842

service = AvahiService(name = server_settings[u"servicename"],

1843

servicetype = u"_mandos._tcp",

1957

1844

protocol = protocol, bus = bus)

1958

1845

if server_settings["interface"]:

1959

1846

service.interface = (if_nametoindex

1960

(str(server_settings["interface"])))

1961

1847

(str(server_settings[u"interface"])))

1848

1849

if not debug:

1850

# Close all input and output, do double fork, etc.

1851

daemon()

1852

1962

1853

global multiprocessing_manager

1963

1854

multiprocessing_manager = multiprocessing.Manager()

1964

1855

1983

1874

client_config, section)))

1984

1875

for section in client_config.sections()))

1985

1876

if not tcp_server.clients:

1986

logger.warning("No clients defined")

1877

logger.warning(u"No clients defined")

1987

1878

1988

1879

if not debug:

1989

1880

try:

1990

1881

with pidfile:

1991

1882

pid = os.getpid()

1992

pidfile.write(str(pid) + "\n".encode("utf-8"))

1883

pidfile.write(str(pid) + "\n")

1993

1884

del pidfile

1994

1885

except IOError:

1995

logger.error("Could not write to file %r with PID %d",

1886

logger.error(u"Could not write to file %r with PID %d",

1996

1887

pidfilename, pid)

1997

1888

except NameError:

1998

1889

# "pidfile" was never created

2008

1899

class MandosDBusService(dbus.service.Object):

2009

1900

"""A D-Bus proxy object"""

2010

1901

def __init__(self):

2011

dbus.service.Object.__init__(self, bus, "/")

2012

_interface = "se.bsnet.fukt.Mandos"

1902

dbus.service.Object.__init__(self, bus, u"/")

1903

_interface = u"se.bsnet.fukt.Mandos"

2013

1904

2014

@dbus.service.signal(_interface, signature="o")

1905

@dbus.service.signal(_interface, signature=u"o")

2015

1906

def ClientAdded(self, objpath):

2016

1907

"D-Bus signal"

2017

1908

pass

2018

1909

2019

@dbus.service.signal(_interface, signature="ss")

1910

@dbus.service.signal(_interface, signature=u"ss")

2020

1911

def ClientNotFound(self, fingerprint, address):

2021

1912

"D-Bus signal"

2022

1913

pass

2023

1914

2024

@dbus.service.signal(_interface, signature="os")

1915

@dbus.service.signal(_interface, signature=u"os")

2025

1916

def ClientRemoved(self, objpath, name):

2026

1917

"D-Bus signal"

2027

1918

pass

2028

1919

2029

@dbus.service.method(_interface, out_signature="ao")

1920

@dbus.service.method(_interface, out_signature=u"ao")

2030

1921

def GetAllClients(self):

2031

1922

"D-Bus method"

2032

1923

return dbus.Array(c.dbus_object_path

2033

1924

for c in tcp_server.clients)

2034

1925

2035

1926

@dbus.service.method(_interface,

2036

out_signature="a{oa{sv}}")

1927

out_signature=u"a{oa{sv}}")

2037

1928

def GetAllClientsWithProperties(self):

2038

1929

"D-Bus method"

2039

1930

return dbus.Dictionary(

2040

((c.dbus_object_path, c.GetAll(""))

1931

((c.dbus_object_path, c.GetAll(u""))

2041

1932

for c in tcp_server.clients),

2042

signature="oa{sv}")

1933

signature=u"oa{sv}")

2043

1934

2044

@dbus.service.method(_interface, in_signature="o")

1935

@dbus.service.method(_interface, in_signature=u"o")

2045

1936

def RemoveClient(self, object_path):

2046

1937

"D-Bus method"

2047

1938

for c in tcp_server.clients:

2089

1980

# Find out what port we got

2090

1981

service.port = tcp_server.socket.getsockname()[1]

2091

1982

if use_ipv6:

2092

logger.info("Now listening on address %r, port %d,"

1983

logger.info(u"Now listening on address %r, port %d,"

2093

1984

" flowinfo %d, scope_id %d"

2094

1985

% tcp_server.socket.getsockname())

2095

1986

else: # IPv4

2096

logger.info("Now listening on address %r, port %d"

1987

logger.info(u"Now listening on address %r, port %d"

2097

1988

% tcp_server.socket.getsockname())

2098

1989

2099

1990

#service.interface = tcp_server.socket.getsockname()[3]

2102

1993

# From the Avahi example code

2103

1994

try:

2104

1995

service.activate()

2105

except dbus.exceptions.DBusException as error:

2106

logger.critical("DBusException: %s", error)

1996

except dbus.exceptions.DBusException, error:

1997

logger.critical(u"DBusException: %s", error)

2107

1998

cleanup()

2108

1999

sys.exit(1)

2109

2000

# End of Avahi example code

2113

2004

(tcp_server.handle_request

2114

2005

(*args[2:], **kwargs) or True))

2115

2006

2116

logger.debug("Starting main loop")

2007

logger.debug(u"Starting main loop")

2117

2008

main_loop.run()

2118

except AvahiError as error:

2119

logger.critical("AvahiError: %s", error)

2009

except AvahiError, error:

2010

logger.critical(u"AvahiError: %s", error)

2120

2011

cleanup()

2121

2012

sys.exit(1)

2122

2013

except KeyboardInterrupt:

2123

2014

if debug:

2124

print("", file=sys.stderr)

2125

logger.debug("Server received KeyboardInterrupt")

2126

logger.debug("Server exiting")

2015

print >> sys.stderr

2016

logger.debug(u"Server received KeyboardInterrupt")

2017

logger.debug(u"Server exiting")

2127

2018

# Must run before the D-Bus bus name gets deregistered

2128

2019

cleanup()

2129

2020