/mandos/trunk : revision 449

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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 = "1.3.0"

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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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name: string; Example: 'Mandos'

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

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name: string; Example: u'Mandos'

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

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

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port: integer; what port to announce

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TXT: list of strings; TXT record for the service

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"""

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

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

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

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

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protocol = avahi.PROTO_UNSPEC, bus = None):

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self.interface = interface

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self.name = name

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self.group = None # our entry group

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self.server = None

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self.bus = bus

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self.entry_group_state_changed_match = None

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def rename(self):

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

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if self.rename_count >= self.max_renames:

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

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" after %i retries, exiting.",

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

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u" after %i retries, exiting.",

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self.rename_count)

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raise AvahiServiceError("Too many renames")

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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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runtime_expansions: Allowed attributes for runtime expansion.

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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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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.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.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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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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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):

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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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471

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try:

501

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command = self.checker_command % escaped_attrs

502

except TypeError as error:

503

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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477

return True # Try again later

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self.current_checker_command = command

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479

try:

508

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

480

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

509

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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(),

513

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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="/")

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shell=True, cwd=u"/")

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self.checker_callback_tag = (gobject.child_watch_add

518

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(self.checker.pid,

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491

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:

528

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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501

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))

512

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

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try:

542

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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)

546

except OSError as error:

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except OSError, error:

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519

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

548

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raise

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self.checker = None

550

522

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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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527

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"""

563

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

564

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

565

if byte_arrays and signature != "ay":

566

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

567

" signature %r" % signature)

537

if byte_arrays and signature != u"ay":

538

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

539

u" signature %r" % signature)

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def decorator(func):

569

541

func._dbus_is_property = True

570

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func._dbus_interface = dbus_interface

571

543

func._dbus_signature = signature

572

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func._dbus_access = access

573

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func._dbus_name = func.__name__

574

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

546

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

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

576

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

548

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

577

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return func

578

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return decorator

579

551

607

579

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@staticmethod

609

581

def _is_dbus_property(obj):

610

return getattr(obj, "_dbus_is_property", False)

582

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

611

583

612

584

def _get_all_dbus_properties(self):

613

585

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

621

593

property with the specified name and interface.

622

594

"""

623

595

for name in (property_name,

624

property_name + "_dbus_property"):

596

property_name + u"_dbus_property"):

625

597

prop = getattr(self, name, None)

626

598

if (prop is None

627

599

or not self._is_dbus_property(prop)

631

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continue

632

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return prop

633

605

# No such property

634

raise DBusPropertyNotFound(self.dbus_object_path + ":"

635

+ interface_name + "."

606

raise DBusPropertyNotFound(self.dbus_object_path + u":"

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+ interface_name + u"."

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608

+ property_name)

637

609

638

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

639

out_signature="v")

610

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

611

out_signature=u"v")

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612

def Get(self, interface_name, property_name):

641

613

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

642

614

"""

643

615

prop = self._get_dbus_property(interface_name, property_name)

644

if prop._dbus_access == "write":

616

if prop._dbus_access == u"write":

645

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raise DBusPropertyAccessException(property_name)

646

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value = prop()

647

if not hasattr(value, "variant_level"):

619

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

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620

return value

649

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

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622

651

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

623

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

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

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625

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

654

626

"""

655

627

prop = self._get_dbus_property(interface_name, property_name)

656

if prop._dbus_access == "read":

628

if prop._dbus_access == u"read":

657

629

raise DBusPropertyAccessException(property_name)

658

if prop._dbus_get_args_options["byte_arrays"]:

630

if prop._dbus_get_args_options[u"byte_arrays"]:

659

631

# The byte_arrays option is not supported yet on

660

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# signatures other than "ay".

661

if prop._dbus_signature != "ay":

633

if prop._dbus_signature != u"ay":

662

634

raise ValueError

663

635

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

664

636

for byte in value))

665

637

prop(value)

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638

667

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

668

out_signature="a{sv}")

639

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

640

out_signature=u"a{sv}")

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def GetAll(self, interface_name):

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

671

643

standard.

679

651

# Interface non-empty but did not match

680

652

continue

681

653

# Ignore write-only properties

682

if prop._dbus_access == "write":

654

if prop._dbus_access == u"write":

683

655

continue

684

656

value = prop()

685

if not hasattr(value, "variant_level"):

657

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

686

658

all[name] = value

687

659

continue

688

660

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

689

661

value.variant_level+1)

690

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

662

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

691

663

692

664

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

693

out_signature="s",

665

out_signature=u"s",

694

666

path_keyword='object_path',

695

667

connection_keyword='connection')

696

668

def Introspect(self, object_path, connection):

701

673

try:

702

674

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

703

675

def make_tag(document, name, prop):

704

e = document.createElement("property")

705

e.setAttribute("name", name)

706

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

707

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

676

e = document.createElement(u"property")

677

e.setAttribute(u"name", name)

678

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

679

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

708

680

return e

709

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

681

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

710

682

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

711

683

for name, prop

712

684

in self._get_all_dbus_properties()

713

685

if prop._dbus_interface

714

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

686

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

715

687

if_tag.appendChild(tag)

716

688

# Add the names to the return values for the

717

689

# "org.freedesktop.DBus.Properties" methods

718

if (if_tag.getAttribute("name")

719

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

720

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

721

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

722

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

723

if (arg.getAttribute("direction")

724

== "out"):

725

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

726

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

727

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

728

if (arg.getAttribute("direction")

729

== "out"):

730

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

731

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

690

if (if_tag.getAttribute(u"name")

691

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

692

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

693

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

694

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

695

if (arg.getAttribute(u"direction")

696

== u"out"):

697

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

698

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

699

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

700

if (arg.getAttribute(u"direction")

701

== u"out"):

702

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

703

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

732

704

document.unlink()

733

705

except (AttributeError, xml.dom.DOMException,

734

xml.parsers.expat.ExpatError) as error:

735

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

706

xml.parsers.expat.ExpatError), error:

707

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

736

708

error)

737

709

return xmlstring

738

710

746

718

"""

747

719

748

720

runtime_expansions = (Client.runtime_expansions

749

+ ("dbus_object_path",))

721

+ (u"dbus_object_path",))

750

722

751

723

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

752

724

757

729

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

758

730

# the D-Bus

759

731

client_object_name = unicode(self.name).translate(

760

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

761

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

732

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

733

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

762

734

self.dbus_object_path = (dbus.ObjectPath

763

("/clients/" + client_object_name))

735

(u"/clients/" + client_object_name))

764

736

DBusObjectWithProperties.__init__(self, self.bus,

765

737

self.dbus_object_path)

766

738

773

745

if (hasattr(self, "dbus_object_path")

774

746

and bval is not bool(old_value)):

775

747

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

776

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

748

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

777

749

dbus_bool)

778

750

779

751

approvals_pending = property(_get_approvals_pending,

787

759

variant_level=variant_level)

788

760

789

761

def enable(self):

790

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

762

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

791

763

r = Client.enable(self)

792

764

if oldstate != self.enabled:

793

765

# Emit D-Bus signals

794

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

766

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

795

767

dbus.Boolean(True, variant_level=1))

796

768

self.PropertyChanged(

797

dbus.String("LastEnabled"),

769

dbus.String(u"LastEnabled"),

798

770

self._datetime_to_dbus(self.last_enabled,

799

771

variant_level=1))

800

772

return r

801

773

802

774

def disable(self, quiet = False):

803

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

775

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

804

776

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

805

777

if not quiet and oldstate != self.enabled:

806

778

# Emit D-Bus signal

807

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

779

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

808

780

dbus.Boolean(False, variant_level=1))

809

781

return r

810

782

813

785

self.remove_from_connection()

814

786

except LookupError:

815

787

pass

816

if hasattr(DBusObjectWithProperties, "__del__"):

788

if hasattr(DBusObjectWithProperties, u"__del__"):

817

789

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

818

790

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

819

791

822

794

self.checker_callback_tag = None

823

795

self.checker = None

824

796

# Emit D-Bus signal

825

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

797

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

826

798

dbus.Boolean(False, variant_level=1))

827

799

if os.WIFEXITED(condition):

828

800

exitstatus = os.WEXITSTATUS(condition)

840

812

*args, **kwargs)

841

813

842

814

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

843

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

815

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

844

816

# Emit D-Bus signal

845

817

self.PropertyChanged(

846

dbus.String("LastCheckedOK"),

818

dbus.String(u"LastCheckedOK"),

847

819

(self._datetime_to_dbus(self.last_checked_ok,

848

820

variant_level=1)))

821

return r

849

822

850

823

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

851

824

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

852

825

# Emit D-Bus signal

853

826

self.PropertyChanged(

854

dbus.String("LastApprovalRequest"),

827

dbus.String(u"LastApprovalRequest"),

855

828

(self._datetime_to_dbus(self.last_approval_request,

856

829

variant_level=1)))

857

830

return r

869

842

# Emit D-Bus signal

870

843

self.CheckerStarted(self.current_checker_command)

871

844

self.PropertyChanged(

872

dbus.String("CheckerRunning"),

845

dbus.String(u"CheckerRunning"),

873

846

dbus.Boolean(True, variant_level=1))

874

847

return r

875

848

876

849

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

877

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

850

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

878

851

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

879

852

if (old_checker is not None

880

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

881

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

853

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

854

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

882

855

dbus.Boolean(False, variant_level=1))

883

856

return r

884

857

895

868

896

869

897

870

## D-Bus methods, signals & properties

898

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

871

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

899

872

900

873

## Signals

901

874

902

875

# CheckerCompleted - signal

903

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

876

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

904

877

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

905

878

"D-Bus signal"

906

879

pass

907

880

908

881

# CheckerStarted - signal

909

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

882

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

910

883

def CheckerStarted(self, command):

911

884

"D-Bus signal"

912

885

pass

913

886

914

887

# PropertyChanged - signal

915

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

888

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

916

889

def PropertyChanged(self, property, value):

917

890

"D-Bus signal"

918

891

pass

927

900

pass

928

901

929

902

# Rejected - signal

930

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

903

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

931

904

def Rejected(self, reason):

932

905

"D-Bus signal"

933

906

pass

934

907

935

908

# NeedApproval - signal

936

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

909

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

937

910

def NeedApproval(self, timeout, default):

938

911

"D-Bus signal"

939

912

return self.need_approval()

941

914

## Methods

942

915

943

916

# Approve - method

944

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

917

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

945

918

def Approve(self, value):

946

919

self.approve(value)

947

920

948

921

# CheckedOK - method

949

922

@dbus.service.method(_interface)

950

923

def CheckedOK(self):

951

self.checked_ok()

924

return self.checked_ok()

952

925

953

926

# Enable - method

954

927

@dbus.service.method(_interface)

976

949

## Properties

977

950

978

951

# ApprovalPending - property

979

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

952

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

980

953

def ApprovalPending_dbus_property(self):

981

954

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

982

955

983

956

# ApprovedByDefault - property

984

@dbus_service_property(_interface, signature="b",

985

access="readwrite")

957

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

958

access=u"readwrite")

986

959

def ApprovedByDefault_dbus_property(self, value=None):

987

960

if value is None: # get

988

961

return dbus.Boolean(self.approved_by_default)

989

962

self.approved_by_default = bool(value)

990

963

# Emit D-Bus signal

991

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

964

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

992

965

dbus.Boolean(value, variant_level=1))

993

966

994

967

# ApprovalDelay - property

995

@dbus_service_property(_interface, signature="t",

996

access="readwrite")

968

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

969

access=u"readwrite")

997

970

def ApprovalDelay_dbus_property(self, value=None):

998

971

if value is None: # get

999

972

return dbus.UInt64(self.approval_delay_milliseconds())

1000

973

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

1001

974

# Emit D-Bus signal

1002

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

975

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

1003

976

dbus.UInt64(value, variant_level=1))

1004

977

1005

978

# ApprovalDuration - property

1006

@dbus_service_property(_interface, signature="t",

1007

access="readwrite")

979

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

980

access=u"readwrite")

1008

981

def ApprovalDuration_dbus_property(self, value=None):

1009

982

if value is None: # get

1010

983

return dbus.UInt64(self._timedelta_to_milliseconds(

1011

984

self.approval_duration))

1012

985

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

1013

986

# Emit D-Bus signal

1014

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

987

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

1015

988

dbus.UInt64(value, variant_level=1))

1016

989

1017

990

# Name - property

1018

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

991

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

1019

992

def Name_dbus_property(self):

1020

993

return dbus.String(self.name)

1021

994

1022

995

# Fingerprint - property

1023

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

996

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

1024

997

def Fingerprint_dbus_property(self):

1025

998

return dbus.String(self.fingerprint)

1026

999

1027

1000

# Host - property

1028

@dbus_service_property(_interface, signature="s",

1029

access="readwrite")

1001

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

1002

access=u"readwrite")

1030

1003

def Host_dbus_property(self, value=None):

1031

1004

if value is None: # get

1032

1005

return dbus.String(self.host)

1033

1006

self.host = value

1034

1007

# Emit D-Bus signal

1035

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

1008

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

1036

1009

dbus.String(value, variant_level=1))

1037

1010

1038

1011

# Created - property

1039

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

1012

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

1040

1013

def Created_dbus_property(self):

1041

1014

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

1042

1015

1043

1016

# LastEnabled - property

1044

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

1017

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

1045

1018

def LastEnabled_dbus_property(self):

1046

1019

if self.last_enabled is None:

1047

return dbus.String("")

1020

return dbus.String(u"")

1048

1021

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

1049

1022

1050

1023

# Enabled - property

1051

@dbus_service_property(_interface, signature="b",

1052

access="readwrite")

1024

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

1025

access=u"readwrite")

1053

1026

def Enabled_dbus_property(self, value=None):

1054

1027

if value is None: # get

1055

1028

return dbus.Boolean(self.enabled)

1059

1032

self.disable()

1060

1033

1061

1034

# LastCheckedOK - property

1062

@dbus_service_property(_interface, signature="s",

1063

access="readwrite")

1035

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

1036

access=u"readwrite")

1064

1037

def LastCheckedOK_dbus_property(self, value=None):

1065

1038

if value is not None:

1066

1039

self.checked_ok()

1067

1040

return

1068

1041

if self.last_checked_ok is None:

1069

return dbus.String("")

1042

return dbus.String(u"")

1070

1043

return dbus.String(self._datetime_to_dbus(self

1071

1044

.last_checked_ok))

1072

1045

1073

1046

# LastApprovalRequest - property

1074

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

1047

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

1075

1048

def LastApprovalRequest_dbus_property(self):

1076

1049

if self.last_approval_request is None:

1077

return dbus.String("")

1050

return dbus.String(u"")

1078

1051

return dbus.String(self.

1079

1052

_datetime_to_dbus(self

1080

1053

.last_approval_request))

1081

1054

1082

1055

# Timeout - property

1083

@dbus_service_property(_interface, signature="t",

1084

access="readwrite")

1056

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

1057

access=u"readwrite")

1085

1058

def Timeout_dbus_property(self, value=None):

1086

1059

if value is None: # get

1087

1060

return dbus.UInt64(self.timeout_milliseconds())

1088

1061

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

1089

1062

# Emit D-Bus signal

1090

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

1063

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

1091

1064

dbus.UInt64(value, variant_level=1))

1092

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

1065

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

1093

1066

return

1094

1067

# Reschedule timeout

1095

1068

gobject.source_remove(self.disable_initiator_tag)

1108

1081

(time_to_die, self.disable))

1109

1082

1110

1083

# Interval - property

1111

@dbus_service_property(_interface, signature="t",

1112

access="readwrite")

1084

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

1085

access=u"readwrite")

1113

1086

def Interval_dbus_property(self, value=None):

1114

1087

if value is None: # get

1115

1088

return dbus.UInt64(self.interval_milliseconds())

1116

1089

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

1117

1090

# Emit D-Bus signal

1118

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

1091

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

1119

1092

dbus.UInt64(value, variant_level=1))

1120

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

1093

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

1121

1094

return

1122

1095

# Reschedule checker run

1123

1096

gobject.source_remove(self.checker_initiator_tag)

1126

1099

self.start_checker() # Start one now, too

1127

1100

1128

1101

# Checker - property

1129

@dbus_service_property(_interface, signature="s",

1130

access="readwrite")

1102

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

1103

access=u"readwrite")

1131

1104

def Checker_dbus_property(self, value=None):

1132

1105

if value is None: # get

1133

1106

return dbus.String(self.checker_command)

1134

1107

self.checker_command = value

1135

1108

# Emit D-Bus signal

1136

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

1109

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

1137

1110

dbus.String(self.checker_command,

1138

1111

variant_level=1))

1139

1112

1140

1113

# CheckerRunning - property

1141

@dbus_service_property(_interface, signature="b",

1142

access="readwrite")

1114

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

1115

access=u"readwrite")

1143

1116

def CheckerRunning_dbus_property(self, value=None):

1144

1117

if value is None: # get

1145

1118

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

1149

1122

self.stop_checker()

1150

1123

1151

1124

# ObjectPath - property

1152

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

1125

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

1153

1126

def ObjectPath_dbus_property(self):

1154

1127

return self.dbus_object_path # is already a dbus.ObjectPath

1155

1128

1156

1129

# Secret = property

1157

@dbus_service_property(_interface, signature="ay",

1158

access="write", byte_arrays=True)

1130

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

1131

access=u"write", byte_arrays=True)

1159

1132

def Secret_dbus_property(self, value):

1160

1133

self.secret = str(value)

1161

1134

1196

1169

1197

1170

def handle(self):

1198

1171

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

1199

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

1172

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

1200

1173

unicode(self.client_address))

1201

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

1174

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

1202

1175

self.server.child_pipe.fileno())

1203

1176

1204

1177

session = (gnutls.connection

1211

1184

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

1212

1185

# here despite using OpenPGP certificates.

1213

1186

1214

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

1215

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

1216

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

1217

# "+DHE-DSS"))

1187

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

1188

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

1189

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

1190

# u"+DHE-DSS"))

1218

1191

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

1219

1192

priority = self.server.gnutls_priority

1220

1193

if priority is None:

1221

priority = "NORMAL"

1194

priority = u"NORMAL"

1222

1195

(gnutls.library.functions

1223

1196

.gnutls_priority_set_direct(session._c_object,

1224

1197

priority, None))

1226

1199

# Start communication using the Mandos protocol

1227

1200

# Get protocol number

1228

1201

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

1229

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

1202

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

1230

1203

try:

1231

1204

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

1232

1205

raise RuntimeError

1233

except (ValueError, IndexError, RuntimeError) as error:

1234

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

1206

except (ValueError, IndexError, RuntimeError), error:

1207

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

1235

1208

return

1236

1209

1237

1210

# Start GnuTLS connection

1238

1211

try:

1239

1212

session.handshake()

1240

except gnutls.errors.GNUTLSError as error:

1241

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

1213

except gnutls.errors.GNUTLSError, error:

1214

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

1242

1215

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

1243

1216

# established. Just abandon the request.

1244

1217

return

1245

logger.debug("Handshake succeeded")

1218

logger.debug(u"Handshake succeeded")

1246

1219

1247

1220

approval_required = False

1248

1221

try:

1249

1222

try:

1250

1223

fpr = self.fingerprint(self.peer_certificate

1251

1224

(session))

1252

except (TypeError,

1253

gnutls.errors.GNUTLSError) as error:

1254

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

1225

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

1226

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

1255

1227

return

1256

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

1228

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

1257

1229

1258

1230

try:

1259

1231

client = ProxyClient(child_pipe, fpr,

1268

1240

1269

1241

while True:

1270

1242

if not client.enabled:

1271

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

1243

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

1272

1244

client.name)

1273

1245

if self.server.use_dbus:

1274

1246

# Emit D-Bus signal

1279

1251

#We are approved or approval is disabled

1280

1252

break

1281

1253

elif client._approved is None:

1282

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

1254

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

1283

1255

client.name)

1284

1256

if self.server.use_dbus:

1285

1257

# Emit D-Bus signal

1287

1259

client.approval_delay_milliseconds(),

1288

1260

client.approved_by_default)

1289

1261

else:

1290

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

1262

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

1291

1263

client.name)

1292

1264

if self.server.use_dbus:

1293

1265

# Emit D-Bus signal

1319

1291

while sent_size < len(client.secret):

1320

1292

try:

1321

1293

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

1322

except gnutls.errors.GNUTLSError as error:

1294

except (gnutls.errors.GNUTLSError), error:

1323

1295

logger.warning("gnutls send failed")

1324

1296

return

1325

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

1297

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

1326

1298

sent, len(client.secret)

1327

1299

- (sent_size + sent))

1328

1300

sent_size += sent

1329

1301

1330

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

1302

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

1331

1303

# bump the timeout as if seen

1332

1304

client.checked_ok()

1333

1305

if self.server.use_dbus:

1339

1311

client.approvals_pending -= 1

1340

1312

try:

1341

1313

session.bye()

1342

except gnutls.errors.GNUTLSError as error:

1314

except (gnutls.errors.GNUTLSError), error:

1343

1315

logger.warning("GnuTLS bye failed")

1344

1316

1345

1317

@staticmethod

1356

1328

.gnutls_certificate_get_peers

1357

1329

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

1358

1330

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

1359

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

1360

" certificate")

1331

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

1332

u" certificate")

1361

1333

if list_size.value == 0:

1362

1334

return None

1363

1335

cert = cert_list[0]

1389

1361

if crtverify.value != 0:

1390

1362

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1391

1363

raise (gnutls.errors.CertificateSecurityError

1392

("Verify failed"))

1364

(u"Verify failed"))

1393

1365

# New buffer for the fingerprint

1394

1366

buf = ctypes.create_string_buffer(20)

1395

1367

buf_len = ctypes.c_size_t()

1402

1374

# Convert the buffer to a Python bytestring

1403

1375

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

1404

1376

# Convert the bytestring to hexadecimal notation

1405

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

1377

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

1406

1378

return hex_fpr

1407

1379

1408

1380

1436

1408

1437

1409

def add_pipe(self, parent_pipe):

1438

1410

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

1439

raise NotImplementedError

1411

pass

1440

1412

1441

1413

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

1442

1414

socketserver.TCPServer, object):

1460

1432

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

1461

1433

if self.interface is not None:

1462

1434

if SO_BINDTODEVICE is None:

1463

logger.error("SO_BINDTODEVICE does not exist;"

1464

" cannot bind to interface %s",

1435

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

1436

u" cannot bind to interface %s",

1465

1437

self.interface)

1466

1438

else:

1467

1439

try:

1468

1440

self.socket.setsockopt(socket.SOL_SOCKET,

1469

1441

SO_BINDTODEVICE,

1470

1442

str(self.interface

1471

+ '\0'))

1472

except socket.error as error:

1443

+ u'\0'))

1444

except socket.error, error:

1473

1445

if error[0] == errno.EPERM:

1474

logger.error("No permission to"

1475

" bind to interface %s",

1446

logger.error(u"No permission to"

1447

u" bind to interface %s",

1476

1448

self.interface)

1477

1449

elif error[0] == errno.ENOPROTOOPT:

1478

logger.error("SO_BINDTODEVICE not available;"

1479

" cannot bind to interface %s",

1450

logger.error(u"SO_BINDTODEVICE not available;"

1451

u" cannot bind to interface %s",

1480

1452

self.interface)

1481

1453

else:

1482

1454

raise

1484

1456

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

1485

1457

if not self.server_address[0]:

1486

1458

if self.address_family == socket.AF_INET6:

1487

any_address = "::" # in6addr_any

1459

any_address = u"::" # in6addr_any

1488

1460

else:

1489

1461

any_address = socket.INADDR_ANY

1490

1462

self.server_address = (any_address,

1539

1511

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

1540

1512

client_object=None):

1541

1513

condition_names = {

1542

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

1543

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

1514

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

1515

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

1544

1516

# blocking).

1545

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

1546

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

1547

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

1517

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

1518

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

1519

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

1548

1520

# broken, usually for pipes and

1549

1521

# sockets).

1550

1522

}

1569

1541

client = c

1570

1542

break

1571

1543

else:

1572

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

1573

"dress: %s", fpr, address)

1544

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

1545

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

1574

1546

if self.use_dbus:

1575

1547

# Emit D-Bus signal

1576

1548

mandos_dbus_service.ClientNotFound(fpr, address[0])

1610

1582

def string_to_delta(interval):

1611

1583

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

1612

1584

1613

>>> string_to_delta('7d')

1585

>>> string_to_delta(u'7d')

1614

1586

datetime.timedelta(7)

1615

>>> string_to_delta('60s')

1587

>>> string_to_delta(u'60s')

1616

1588

datetime.timedelta(0, 60)

1617

>>> string_to_delta('60m')

1589

>>> string_to_delta(u'60m')

1618

1590

datetime.timedelta(0, 3600)

1619

>>> string_to_delta('24h')

1591

>>> string_to_delta(u'24h')

1620

1592

datetime.timedelta(1)

1621

>>> string_to_delta('1w')

1593

>>> string_to_delta(u'1w')

1622

1594

datetime.timedelta(7)

1623

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

1595

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

1624

1596

datetime.timedelta(0, 330)

1625

1597

"""

1626

1598

timevalue = datetime.timedelta(0)

1628

1600

try:

1629

1601

suffix = unicode(s[-1])

1630

1602

value = int(s[:-1])

1631

if suffix == "d":

1603

if suffix == u"d":

1632

1604

delta = datetime.timedelta(value)

1633

elif suffix == "s":

1605

elif suffix == u"s":

1634

1606

delta = datetime.timedelta(0, value)

1635

elif suffix == "m":

1607

elif suffix == u"m":

1636

1608

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

1637

elif suffix == "h":

1609

elif suffix == u"h":

1638

1610

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

1639

elif suffix == "w":

1611

elif suffix == u"w":

1640

1612

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

1641

1613

else:

1642

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

1643

except (ValueError, IndexError) as e:

1644

raise ValueError(*(e.args))

1614

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

1615

except (ValueError, IndexError), e:

1616

raise ValueError(e.message)

1645

1617

timevalue += delta

1646

1618

return timevalue

1647

1619

1653

1625

global if_nametoindex

1654

1626

try:

1655

1627

if_nametoindex = (ctypes.cdll.LoadLibrary

1656

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

1628

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

1657

1629

.if_nametoindex)

1658

1630

except (OSError, AttributeError):

1659

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

1631

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

1660

1632

def if_nametoindex(interface):

1661

1633

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

1662

1634

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

1663

1635

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

1664

1636

ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

1665

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

1637

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

1666

1638

interface))

1667

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

1639

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

1668

1640

ifreq[16:20])[0]

1669

1641

return interface_index

1670

1642

return if_nametoindex(interface)

1678

1650

sys.exit()

1679

1651

os.setsid()

1680

1652

if not nochdir:

1681

os.chdir("/")

1653

os.chdir(u"/")

1682

1654

if os.fork():

1683

1655

sys.exit()

1684

1656

if not noclose:

1686

1658

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

1687

1659

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

1688

1660

raise OSError(errno.ENODEV,

1689

"%s not a character device"

1661

u"%s not a character device"

1690

1662

% os.path.devnull)

1691

1663

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

1692

1664

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

1700

1672

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

1701

1673

# Parsing of options, both command line and config file

1702

1674

1703

parser = argparse.ArgumentParser()

1704

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

1705

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

1706

help="show version number and exit")

1707

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

1708

help="Bind to interface IF")

1709

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

1710

help="Address to listen for requests on")

1711

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

1712

help="Port number to receive requests on")

1713

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

1714

help="Run self-test")

1715

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

1716

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

1717

" to terminal")

1718

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

1719

help="Debug level for stdout output")

1720

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

1721

" priority string (see GnuTLS documentation)")

1722

parser.add_argument("--servicename",

1723

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

1724

parser.add_argument("--configdir",

1725

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

1726

help="Directory to search for configuration"

1727

" files")

1728

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

1729

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

1730

" system bus interface")

1731

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

1732

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

1733

options = parser.parse_args()

1675

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

1676

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

1677

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

1678

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

1679

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

1680

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

1681

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

1682

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

1683

help=u"Run self-test")

1684

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

1685

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

1686

u" terminal")

1687

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

1688

help=u"Debug level for stdout output")

1689

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

1690

u" priority string (see GnuTLS documentation)")

1691

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

1692

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

1693

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

1694

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

1695

help=u"Directory to search for configuration"

1696

u" files")

1697

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

1698

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

1699

u" system bus interface")

1700

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

1701

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

1702

options = parser.parse_args()[0]

1734

1703

1735

1704

if options.check:

1736

1705

import doctest

1738

1707

sys.exit()

1739

1708

1740

1709

# Default values for config file for server-global settings

1741

server_defaults = { "interface": "",

1742

"address": "",

1743

"port": "",

1744

"debug": "False",

1745

"priority":

1746

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

1747

"servicename": "Mandos",

1748

"use_dbus": "True",

1749

"use_ipv6": "True",

1750

"debuglevel": "",

1710

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

1711

u"address": u"",

1712

u"port": u"",

1713

u"debug": u"False",

1714

u"priority":

1715

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

1716

u"servicename": u"Mandos",

1717

u"use_dbus": u"True",

1718

u"use_ipv6": u"True",

1719

u"debuglevel": u"",

1751

1720

}

1752

1721

1753

1722

# Parse config file for server-global settings

1754

1723

server_config = configparser.SafeConfigParser(server_defaults)

1755

1724

del server_defaults

1756

1725

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

1757

"mandos.conf"))

1726

u"mandos.conf"))

1758

1727

# Convert the SafeConfigParser object to a dict

1759

1728

server_settings = server_config.defaults()

1760

1729

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

1761

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

1762

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

1730

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

1731

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

1763

1732

option)

1764

1733

if server_settings["port"]:

1765

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

1766

"port")

1734

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

1735

u"port")

1767

1736

del server_config

1768

1737

1769

1738

# Override the settings from the config file with command line

1770

1739

# options, if set.

1771

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

1772

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

1773

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

1740

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

1741

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

1742

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

1774

1743

value = getattr(options, option)

1775

1744

if value is not None:

1776

1745

server_settings[option] = value

1784

1753

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

1785

1754

1786

1755

# For convenience

1787

debug = server_settings["debug"]

1788

debuglevel = server_settings["debuglevel"]

1789

use_dbus = server_settings["use_dbus"]

1790

use_ipv6 = server_settings["use_ipv6"]

1756

debug = server_settings[u"debug"]

1757

debuglevel = server_settings[u"debuglevel"]

1758

use_dbus = server_settings[u"use_dbus"]

1759

use_ipv6 = server_settings[u"use_ipv6"]

1791

1760

1792

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

1761

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

1793

1762

syslogger.setFormatter(logging.Formatter

1794

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

1795

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

1796

% server_settings["servicename"]))

1763

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

1764

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

1765

% server_settings[u"servicename"]))

1797

1766

1798

1767

# Parse config file with clients

1799

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

1800

"interval": "5m",

1801

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

1802

"host": "",

1803

"approval_delay": "0s",

1804

"approval_duration": "1s",

1768

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

1769

u"interval": u"5m",

1770

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

1771

u"host": u"",

1772

u"approval_delay": u"0s",

1773

u"approval_duration": u"1s",

1805

1774

}

1806

1775

client_config = configparser.SafeConfigParser(client_defaults)

1807

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

1808

"clients.conf"))

1776

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

1777

u"clients.conf"))

1809

1778

1810

1779

global mandos_dbus_service

1811

1780

mandos_dbus_service = None

1812

1781

1813

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

1814

server_settings["port"]),

1782

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

1783

server_settings[u"port"]),

1815

1784

ClientHandler,

1816

interface=(server_settings["interface"]

1785

interface=(server_settings[u"interface"]

1817

1786

or None),

1818

1787

use_ipv6=use_ipv6,

1819

1788

gnutls_priority=

1820

server_settings["priority"],

1789

server_settings[u"priority"],

1821

1790

use_dbus=use_dbus)

1822

1791

if not debug:

1823

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

1792

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

1824

1793

try:

1825

pidfile = open(pidfilename, "w")

1794

pidfile = open(pidfilename, u"w")

1826

1795

except IOError:

1827

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

1796

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

1828

1797

1829

1798

try:

1830

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

1831

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

1799

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

1800

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

1832

1801

except KeyError:

1833

1802

try:

1834

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

1835

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

1803

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

1804

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

1836

1805

except KeyError:

1837

1806

try:

1838

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

1839

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

1807

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

1808

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

1840

1809

except KeyError:

1841

1810

uid = 65534

1842

1811

gid = 65534

1843

1812

try:

1844

1813

os.setgid(gid)

1845

1814

os.setuid(uid)

1846

except OSError as error:

1815

except OSError, error:

1847

1816

if error[0] != errno.EPERM:

1848

1817

raise error

1849

1818

1864

1833

1865

1834

@gnutls.library.types.gnutls_log_func

1866

1835

def debug_gnutls(level, string):

1867

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

1836

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

1868

1837

1869

1838

(gnutls.library.functions

1870

1839

.gnutls_global_set_log_function(debug_gnutls))

1878

1847

# No console logging

1879

1848

logger.removeHandler(console)

1880

1849

1881

# Need to fork before connecting to D-Bus

1882

if not debug:

1883

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

1884

daemon()

1885

1850

1886

1851

global main_loop

1887

1852

# From the Avahi example code

1891

1856

# End of Avahi example code

1892

1857

if use_dbus:

1893

1858

try:

1894

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

1859

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

1895

1860

bus, do_not_queue=True)

1896

except dbus.exceptions.NameExistsException as e:

1897

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

1861

except dbus.exceptions.NameExistsException, e:

1862

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

1898

1863

use_dbus = False

1899

server_settings["use_dbus"] = False

1864

server_settings[u"use_dbus"] = False

1900

1865

tcp_server.use_dbus = False

1901

1866

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

1902

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

1903

servicetype = "_mandos._tcp",

1867

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

1868

servicetype = u"_mandos._tcp",

1904

1869

protocol = protocol, bus = bus)

1905

1870

if server_settings["interface"]:

1906

1871

service.interface = (if_nametoindex

1907

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

1908

1872

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

1873

1874

if not debug:

1875

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

1876

daemon()

1877

1909

1878

global multiprocessing_manager

1910

1879

multiprocessing_manager = multiprocessing.Manager()

1911

1880

1930

1899

client_config, section)))

1931

1900

for section in client_config.sections()))

1932

1901

if not tcp_server.clients:

1933

logger.warning("No clients defined")

1902

logger.warning(u"No clients defined")

1934

1903

1935

1904

if not debug:

1936

1905

try:

1937

1906

with pidfile:

1938

1907

pid = os.getpid()

1939

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

1908

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

1940

1909

del pidfile

1941

1910

except IOError:

1942

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

1911

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

1943

1912

pidfilename, pid)

1944

1913

except NameError:

1945

1914

# "pidfile" was never created

1955

1924

class MandosDBusService(dbus.service.Object):

1956

1925

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

1957

1926

def __init__(self):

1958

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

1959

_interface = "se.bsnet.fukt.Mandos"

1927

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

1928

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

1960

1929

1961

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

1930

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

1962

1931

def ClientAdded(self, objpath):

1963

1932

"D-Bus signal"

1964

1933

pass

1965

1934

1966

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

1935

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

1967

1936

def ClientNotFound(self, fingerprint, address):

1968

1937

"D-Bus signal"

1969

1938

pass

1970

1939

1971

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

1940

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

1972

1941

def ClientRemoved(self, objpath, name):

1973

1942

"D-Bus signal"

1974

1943

pass

1975

1944

1976

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

1945

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

1977

1946

def GetAllClients(self):

1978

1947

"D-Bus method"

1979

1948

return dbus.Array(c.dbus_object_path

1980

1949

for c in tcp_server.clients)

1981

1950

1982

1951

@dbus.service.method(_interface,

1983

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

1952

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

1984

1953

def GetAllClientsWithProperties(self):

1985

1954

"D-Bus method"

1986

1955

return dbus.Dictionary(

1987

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

1956

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

1988

1957

for c in tcp_server.clients),

1989

signature="oa{sv}")

1958

signature=u"oa{sv}")

1990

1959

1991

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

1960

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

1992

1961

def RemoveClient(self, object_path):

1993

1962

"D-Bus method"

1994

1963

for c in tcp_server.clients:

2036

2005

# Find out what port we got

2037

2006

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

2038

2007

if use_ipv6:

2039

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

2008

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

2040

2009

" flowinfo %d, scope_id %d"

2041

2010

% tcp_server.socket.getsockname())

2042

2011

else: # IPv4

2043

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

2012

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

2044

2013

% tcp_server.socket.getsockname())

2045

2014

2046

2015

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

2049

2018

# From the Avahi example code

2050

2019

try:

2051

2020

service.activate()

2052

except dbus.exceptions.DBusException as error:

2053

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

2021

except dbus.exceptions.DBusException, error:

2022

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

2054

2023

cleanup()

2055

2024

sys.exit(1)

2056

2025

# End of Avahi example code

2060

2029

(tcp_server.handle_request

2061

2030

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

2062

2031

2063

logger.debug("Starting main loop")

2032

logger.debug(u"Starting main loop")

2064

2033

main_loop.run()

2065

except AvahiError as error:

2066

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

2034

except AvahiError, error:

2035

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

2067

2036

cleanup()

2068

2037

sys.exit(1)

2069

2038

except KeyboardInterrupt:

2070

2039

if debug:

2071

print("", file=sys.stderr)

2072

logger.debug("Server received KeyboardInterrupt")

2073

logger.debug("Server exiting")

2040

print >> sys.stderr

2041

logger.debug(u"Server received KeyboardInterrupt")

2042

logger.debug(u"Server exiting")

2074

2043

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

2075

2044

cleanup()

2076

2045