/mandos/trunk : revision 441

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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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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.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 = None

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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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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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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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follow_name_owner_changes=True),

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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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if self.group is None:

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self.group = dbus.Interface(

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self.bus.get_object(avahi.DBUS_NAME,

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self.server.EntryGroupNew()),

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avahi.DBUS_INTERFACE_ENTRY_GROUP)

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self.group.connect_to_signal('StateChanged',

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self

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.entry_group_state_changed)

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

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self.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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self.remove()

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

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if self.group is not None:

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self.group.Free()

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self.group = 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]:

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logger.error(bad_states[state])

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

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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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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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(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:

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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="/")

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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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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)

538

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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"""

555

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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:

557

if byte_arrays and signature != "ay":

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

559

" 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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def decorator(func):

561

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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__

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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]

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func._dbus_get_args_options = {'byte_arrays': byte_arrays }

543

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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@staticmethod

601

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def _is_dbus_property(obj):

602

return getattr(obj, "_dbus_is_property", False)

577

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

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def _get_all_dbus_properties(self):

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

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property with the specified name and interface.

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"""

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for name in (property_name,

616

property_name + "_dbus_property"):

591

property_name + u"_dbus_property"):

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prop = getattr(self, name, None)

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if (prop is None

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or not self._is_dbus_property(prop)

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continue

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return prop

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# No such property

626

raise DBusPropertyNotFound(self.dbus_object_path + ":"

627

+ interface_name + "."

601

raise DBusPropertyNotFound(self.dbus_object_path + u":"

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+ interface_name + u"."

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+ property_name)

629

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

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out_signature="v")

605

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

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out_signature=u"v")

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607

def Get(self, interface_name, property_name):

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608

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

634

609

"""

635

610

prop = self._get_dbus_property(interface_name, property_name)

636

if prop._dbus_access == "write":

611

if prop._dbus_access == u"write":

637

612

raise DBusPropertyAccessException(property_name)

638

613

value = prop()

639

if not hasattr(value, "variant_level"):

614

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

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615

return value

641

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

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

618

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

644

619

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

645

620

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

646

621

"""

647

622

prop = self._get_dbus_property(interface_name, property_name)

648

if prop._dbus_access == "read":

623

if prop._dbus_access == u"read":

649

624

raise DBusPropertyAccessException(property_name)

650

if prop._dbus_get_args_options["byte_arrays"]:

625

if prop._dbus_get_args_options[u"byte_arrays"]:

651

626

# The byte_arrays option is not supported yet on

652

627

# signatures other than "ay".

653

if prop._dbus_signature != "ay":

628

if prop._dbus_signature != u"ay":

654

629

raise ValueError

655

630

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

656

631

for byte in value))

657

632

prop(value)

658

633

659

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

660

out_signature="a{sv}")

634

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

635

out_signature=u"a{sv}")

661

636

def GetAll(self, interface_name):

662

637

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

663

638

standard.

671

646

# Interface non-empty but did not match

672

647

continue

673

648

# Ignore write-only properties

674

if prop._dbus_access == "write":

649

if prop._dbus_access == u"write":

675

650

continue

676

651

value = prop()

677

if not hasattr(value, "variant_level"):

652

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

678

653

all[name] = value

679

654

continue

680

655

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

681

656

value.variant_level+1)

682

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

657

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

683

658

684

659

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

685

out_signature="s",

660

out_signature=u"s",

686

661

path_keyword='object_path',

687

662

connection_keyword='connection')

688

663

def Introspect(self, object_path, connection):

693

668

try:

694

669

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

695

670

def make_tag(document, name, prop):

696

e = document.createElement("property")

697

e.setAttribute("name", name)

698

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

699

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)

700

675

return e

701

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

676

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

702

677

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

703

678

for name, prop

704

679

in self._get_all_dbus_properties()

705

680

if prop._dbus_interface

706

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

681

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

707

682

if_tag.appendChild(tag)

708

683

# Add the names to the return values for the

709

684

# "org.freedesktop.DBus.Properties" methods

710

if (if_tag.getAttribute("name")

711

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

712

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

713

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

714

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

715

if (arg.getAttribute("direction")

716

== "out"):

717

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

718

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

719

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

720

if (arg.getAttribute("direction")

721

== "out"):

722

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

723

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")

724

699

document.unlink()

725

700

except (AttributeError, xml.dom.DOMException,

726

xml.parsers.expat.ExpatError) as error:

727

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

701

xml.parsers.expat.ExpatError), error:

702

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

728

703

error)

729

704

return xmlstring

730

705

738

713

"""

739

714

740

715

runtime_expansions = (Client.runtime_expansions

741

+ ("dbus_object_path",))

716

+ (u"dbus_object_path",))

742

717

743

718

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

744

719

749

724

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

750

725

# the D-Bus

751

726

client_object_name = unicode(self.name).translate(

752

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

753

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

727

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

728

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

754

729

self.dbus_object_path = (dbus.ObjectPath

755

("/clients/" + client_object_name))

730

(u"/clients/" + client_object_name))

756

731

DBusObjectWithProperties.__init__(self, self.bus,

757

732

self.dbus_object_path)

758

733

765

740

if (hasattr(self, "dbus_object_path")

766

741

and bval is not bool(old_value)):

767

742

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

768

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

743

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

769

744

dbus_bool)

770

745

771

746

approvals_pending = property(_get_approvals_pending,

779

754

variant_level=variant_level)

780

755

781

756

def enable(self):

782

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

757

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

783

758

r = Client.enable(self)

784

759

if oldstate != self.enabled:

785

760

# Emit D-Bus signals

786

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

761

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

787

762

dbus.Boolean(True, variant_level=1))

788

763

self.PropertyChanged(

789

dbus.String("LastEnabled"),

764

dbus.String(u"LastEnabled"),

790

765

self._datetime_to_dbus(self.last_enabled,

791

766

variant_level=1))

792

767

return r

793

768

794

769

def disable(self, quiet = False):

795

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

770

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

796

771

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

797

772

if not quiet and oldstate != self.enabled:

798

773

# Emit D-Bus signal

799

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

774

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

800

775

dbus.Boolean(False, variant_level=1))

801

776

return r

802

777

805

780

self.remove_from_connection()

806

781

except LookupError:

807

782

pass

808

if hasattr(DBusObjectWithProperties, "__del__"):

783

if hasattr(DBusObjectWithProperties, u"__del__"):

809

784

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

810

785

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

811

786

814

789

self.checker_callback_tag = None

815

790

self.checker = None

816

791

# Emit D-Bus signal

817

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

792

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

818

793

dbus.Boolean(False, variant_level=1))

819

794

if os.WIFEXITED(condition):

820

795

exitstatus = os.WEXITSTATUS(condition)

832

807

*args, **kwargs)

833

808

834

809

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

835

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

810

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

836

811

# Emit D-Bus signal

837

812

self.PropertyChanged(

838

dbus.String("LastCheckedOK"),

813

dbus.String(u"LastCheckedOK"),

839

814

(self._datetime_to_dbus(self.last_checked_ok,

840

815

variant_level=1)))

841

842

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

843

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

844

# Emit D-Bus signal

845

self.PropertyChanged(

846

dbus.String("LastApprovalRequest"),

847

(self._datetime_to_dbus(self.last_approval_request,

848

variant_level=1)))

849

816

return r

850

817

851

818

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

861

828

# Emit D-Bus signal

862

829

self.CheckerStarted(self.current_checker_command)

863

830

self.PropertyChanged(

864

dbus.String("CheckerRunning"),

831

dbus.String(u"CheckerRunning"),

865

832

dbus.Boolean(True, variant_level=1))

866

833

return r

867

834

868

835

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

869

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

836

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

870

837

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

871

838

if (old_checker is not None

872

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

873

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

839

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

840

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

874

841

dbus.Boolean(False, variant_level=1))

875

842

return r

876

843

887

854

888

855

889

856

## D-Bus methods, signals & properties

890

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

857

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

891

858

892

859

## Signals

893

860

894

861

# CheckerCompleted - signal

895

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

862

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

896

863

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

897

864

"D-Bus signal"

898

865

pass

899

866

900

867

# CheckerStarted - signal

901

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

868

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

902

869

def CheckerStarted(self, command):

903

870

"D-Bus signal"

904

871

pass

905

872

906

873

# PropertyChanged - signal

907

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

874

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

908

875

def PropertyChanged(self, property, value):

909

876

"D-Bus signal"

910

877

pass

919

886

pass

920

887

921

888

# Rejected - signal

922

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

889

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

923

890

def Rejected(self, reason):

924

891

"D-Bus signal"

925

892

pass

926

893

927

894

# NeedApproval - signal

928

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

895

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

929

896

def NeedApproval(self, timeout, default):

930

897

"D-Bus signal"

931

return self.need_approval()

898

pass

932

899

933

900

## Methods

934

901

935

902

# Approve - method

936

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

903

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

937

904

def Approve(self, value):

938

905

self.approve(value)

939

906

940

907

# CheckedOK - method

941

908

@dbus.service.method(_interface)

942

909

def CheckedOK(self):

943

self.checked_ok()

910

return self.checked_ok()

944

911

945

912

# Enable - method

946

913

@dbus.service.method(_interface)

968

935

## Properties

969

936

970

937

# ApprovalPending - property

971

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

938

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

972

939

def ApprovalPending_dbus_property(self):

973

940

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

974

941

975

942

# ApprovedByDefault - property

976

@dbus_service_property(_interface, signature="b",

977

access="readwrite")

943

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

944

access=u"readwrite")

978

945

def ApprovedByDefault_dbus_property(self, value=None):

979

946

if value is None: # get

980

947

return dbus.Boolean(self.approved_by_default)

981

948

self.approved_by_default = bool(value)

982

949

# Emit D-Bus signal

983

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

950

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

984

951

dbus.Boolean(value, variant_level=1))

985

952

986

953

# ApprovalDelay - property

987

@dbus_service_property(_interface, signature="t",

988

access="readwrite")

954

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

955

access=u"readwrite")

989

956

def ApprovalDelay_dbus_property(self, value=None):

990

957

if value is None: # get

991

958

return dbus.UInt64(self.approval_delay_milliseconds())

992

959

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

993

960

# Emit D-Bus signal

994

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

961

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

995

962

dbus.UInt64(value, variant_level=1))

996

963

997

964

# ApprovalDuration - property

998

@dbus_service_property(_interface, signature="t",

999

access="readwrite")

965

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

966

access=u"readwrite")

1000

967

def ApprovalDuration_dbus_property(self, value=None):

1001

968

if value is None: # get

1002

969

return dbus.UInt64(self._timedelta_to_milliseconds(

1003

970

self.approval_duration))

1004

971

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

1005

972

# Emit D-Bus signal

1006

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

973

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

1007

974

dbus.UInt64(value, variant_level=1))

1008

975

1009

976

# Name - property

1010

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

977

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

1011

978

def Name_dbus_property(self):

1012

979

return dbus.String(self.name)

1013

980

1014

981

# Fingerprint - property

1015

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

982

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

1016

983

def Fingerprint_dbus_property(self):

1017

984

return dbus.String(self.fingerprint)

1018

985

1019

986

# Host - property

1020

@dbus_service_property(_interface, signature="s",

1021

access="readwrite")

987

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

988

access=u"readwrite")

1022

989

def Host_dbus_property(self, value=None):

1023

990

if value is None: # get

1024

991

return dbus.String(self.host)

1025

992

self.host = value

1026

993

# Emit D-Bus signal

1027

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

994

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

1028

995

dbus.String(value, variant_level=1))

1029

996

1030

997

# Created - property

1031

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

998

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

1032

999

def Created_dbus_property(self):

1033

1000

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

1034

1001

1035

1002

# LastEnabled - property

1036

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

1003

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

1037

1004

def LastEnabled_dbus_property(self):

1038

1005

if self.last_enabled is None:

1039

return dbus.String("")

1006

return dbus.String(u"")

1040

1007

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

1041

1008

1042

1009

# Enabled - property

1043

@dbus_service_property(_interface, signature="b",

1044

access="readwrite")

1010

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

1011

access=u"readwrite")

1045

1012

def Enabled_dbus_property(self, value=None):

1046

1013

if value is None: # get

1047

1014

return dbus.Boolean(self.enabled)

1051

1018

self.disable()

1052

1019

1053

1020

# LastCheckedOK - property

1054

@dbus_service_property(_interface, signature="s",

1055

access="readwrite")

1021

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

1022

access=u"readwrite")

1056

1023

def LastCheckedOK_dbus_property(self, value=None):

1057

1024

if value is not None:

1058

1025

self.checked_ok()

1059

1026

return

1060

1027

if self.last_checked_ok is None:

1061

return dbus.String("")

1028

return dbus.String(u"")

1062

1029

return dbus.String(self._datetime_to_dbus(self

1063

1030

.last_checked_ok))

1064

1031

1065

# LastApprovalRequest - property

1066

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

1067

def LastApprovalRequest_dbus_property(self):

1068

if self.last_approval_request is None:

1069

return dbus.String("")

1070

return dbus.String(self.

1071

_datetime_to_dbus(self

1072

.last_approval_request))

1073

1074

1032

# Timeout - property

1075

@dbus_service_property(_interface, signature="t",

1076

access="readwrite")

1033

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

1034

access=u"readwrite")

1077

1035

def Timeout_dbus_property(self, value=None):

1078

1036

if value is None: # get

1079

1037

return dbus.UInt64(self.timeout_milliseconds())

1080

1038

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

1081

1039

# Emit D-Bus signal

1082

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

1040

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

1083

1041

dbus.UInt64(value, variant_level=1))

1084

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

1042

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

1085

1043

return

1086

1044

# Reschedule timeout

1087

1045

gobject.source_remove(self.disable_initiator_tag)

1100

1058

(time_to_die, self.disable))

1101

1059

1102

1060

# Interval - property

1103

@dbus_service_property(_interface, signature="t",

1104

access="readwrite")

1061

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

1062

access=u"readwrite")

1105

1063

def Interval_dbus_property(self, value=None):

1106

1064

if value is None: # get

1107

1065

return dbus.UInt64(self.interval_milliseconds())

1108

1066

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

1109

1067

# Emit D-Bus signal

1110

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

1068

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

1111

1069

dbus.UInt64(value, variant_level=1))

1112

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

1070

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

1113

1071

return

1114

1072

# Reschedule checker run

1115

1073

gobject.source_remove(self.checker_initiator_tag)

1118

1076

self.start_checker() # Start one now, too

1119

1077

1120

1078

# Checker - property

1121

@dbus_service_property(_interface, signature="s",

1122

access="readwrite")

1079

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

1080

access=u"readwrite")

1123

1081

def Checker_dbus_property(self, value=None):

1124

1082

if value is None: # get

1125

1083

return dbus.String(self.checker_command)

1126

1084

self.checker_command = value

1127

1085

# Emit D-Bus signal

1128

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

1086

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

1129

1087

dbus.String(self.checker_command,

1130

1088

variant_level=1))

1131

1089

1132

1090

# CheckerRunning - property

1133

@dbus_service_property(_interface, signature="b",

1134

access="readwrite")

1091

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

1092

access=u"readwrite")

1135

1093

def CheckerRunning_dbus_property(self, value=None):

1136

1094

if value is None: # get

1137

1095

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

1141

1099

self.stop_checker()

1142

1100

1143

1101

# ObjectPath - property

1144

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

1102

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

1145

1103

def ObjectPath_dbus_property(self):

1146

1104

return self.dbus_object_path # is already a dbus.ObjectPath

1147

1105

1148

1106

# Secret = property

1149

@dbus_service_property(_interface, signature="ay",

1150

access="write", byte_arrays=True)

1107

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

1108

access=u"write", byte_arrays=True)

1151

1109

def Secret_dbus_property(self, value):

1152

1110

self.secret = str(value)

1153

1111

1188

1146

1189

1147

def handle(self):

1190

1148

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

1191

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

1149

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

1192

1150

unicode(self.client_address))

1193

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

1151

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

1194

1152

self.server.child_pipe.fileno())

1195

1153

1196

1154

session = (gnutls.connection

1203

1161

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

1204

1162

# here despite using OpenPGP certificates.

1205

1163

1206

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

1207

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

1208

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

1209

# "+DHE-DSS"))

1164

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

1165

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

1166

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

1167

# u"+DHE-DSS"))

1210

1168

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

1211

1169

priority = self.server.gnutls_priority

1212

1170

if priority is None:

1213

priority = "NORMAL"

1171

priority = u"NORMAL"

1214

1172

(gnutls.library.functions

1215

1173

.gnutls_priority_set_direct(session._c_object,

1216

1174

priority, None))

1218

1176

# Start communication using the Mandos protocol

1219

1177

# Get protocol number

1220

1178

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

1221

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

1179

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

1222

1180

try:

1223

1181

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

1224

1182

raise RuntimeError

1225

except (ValueError, IndexError, RuntimeError) as error:

1226

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

1183

except (ValueError, IndexError, RuntimeError), error:

1184

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

1227

1185

return

1228

1186

1229

1187

# Start GnuTLS connection

1230

1188

try:

1231

1189

session.handshake()

1232

except gnutls.errors.GNUTLSError as error:

1233

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

1190

except gnutls.errors.GNUTLSError, error:

1191

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

1234

1192

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

1235

1193

# established. Just abandon the request.

1236

1194

return

1237

logger.debug("Handshake succeeded")

1195

logger.debug(u"Handshake succeeded")

1238

1196

1239

1197

approval_required = False

1240

1198

try:

1241

1199

try:

1242

1200

fpr = self.fingerprint(self.peer_certificate

1243

1201

(session))

1244

except (TypeError,

1245

gnutls.errors.GNUTLSError) as error:

1246

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

1202

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

1203

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

1247

1204

return

1248

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

1205

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

1249

1206

1250

1207

try:

1251

1208

client = ProxyClient(child_pipe, fpr,

1260

1217

1261

1218

while True:

1262

1219

if not client.enabled:

1263

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

1220

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

1264

1221

client.name)

1265

1222

if self.server.use_dbus:

1266

1223

# Emit D-Bus signal

1271

1228

#We are approved or approval is disabled

1272

1229

break

1273

1230

elif client._approved is None:

1274

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

1231

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

1275

1232

client.name)

1276

1233

if self.server.use_dbus:

1277

1234

# Emit D-Bus signal

1279

1236

client.approval_delay_milliseconds(),

1280

1237

client.approved_by_default)

1281

1238

else:

1282

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

1239

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

1283

1240

client.name)

1284

1241

if self.server.use_dbus:

1285

1242

# Emit D-Bus signal

1311

1268

while sent_size < len(client.secret):

1312

1269

try:

1313

1270

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

1314

except gnutls.errors.GNUTLSError as error:

1271

except (gnutls.errors.GNUTLSError), error:

1315

1272

logger.warning("gnutls send failed")

1316

1273

return

1317

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

1274

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

1318

1275

sent, len(client.secret)

1319

1276

- (sent_size + sent))

1320

1277

sent_size += sent

1321

1278

1322

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

1279

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

1323

1280

# bump the timeout as if seen

1324

1281

client.checked_ok()

1325

1282

if self.server.use_dbus:

1331

1288

client.approvals_pending -= 1

1332

1289

try:

1333

1290

session.bye()

1334

except gnutls.errors.GNUTLSError as error:

1291

except (gnutls.errors.GNUTLSError), error:

1335

1292

logger.warning("GnuTLS bye failed")

1336

1293

1337

1294

@staticmethod

1348

1305

.gnutls_certificate_get_peers

1349

1306

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

1350

1307

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

1351

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

1352

" certificate")

1308

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

1309

u" certificate")

1353

1310

if list_size.value == 0:

1354

1311

return None

1355

1312

cert = cert_list[0]

1381

1338

if crtverify.value != 0:

1382

1339

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1383

1340

raise (gnutls.errors.CertificateSecurityError

1384

("Verify failed"))

1341

(u"Verify failed"))

1385

1342

# New buffer for the fingerprint

1386

1343

buf = ctypes.create_string_buffer(20)

1387

1344

buf_len = ctypes.c_size_t()

1394

1351

# Convert the buffer to a Python bytestring

1395

1352

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

1396

1353

# Convert the bytestring to hexadecimal notation

1397

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

1354

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

1398

1355

return hex_fpr

1399

1356

1400

1357

1428

1385

1429

1386

def add_pipe(self, parent_pipe):

1430

1387

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

1431

raise NotImplementedError

1388

pass

1432

1389

1433

1390

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

1434

1391

socketserver.TCPServer, object):

1452

1409

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

1453

1410

if self.interface is not None:

1454

1411

if SO_BINDTODEVICE is None:

1455

logger.error("SO_BINDTODEVICE does not exist;"

1456

" cannot bind to interface %s",

1412

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

1413

u" cannot bind to interface %s",

1457

1414

self.interface)

1458

1415

else:

1459

1416

try:

1460

1417

self.socket.setsockopt(socket.SOL_SOCKET,

1461

1418

SO_BINDTODEVICE,

1462

1419

str(self.interface

1463

+ '\0'))

1464

except socket.error as error:

1420

+ u'\0'))

1421

except socket.error, error:

1465

1422

if error[0] == errno.EPERM:

1466

logger.error("No permission to"

1467

" bind to interface %s",

1423

logger.error(u"No permission to"

1424

u" bind to interface %s",

1468

1425

self.interface)

1469

1426

elif error[0] == errno.ENOPROTOOPT:

1470

logger.error("SO_BINDTODEVICE not available;"

1471

" cannot bind to interface %s",

1427

logger.error(u"SO_BINDTODEVICE not available;"

1428

u" cannot bind to interface %s",

1472

1429

self.interface)

1473

1430

else:

1474

1431

raise

1476

1433

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

1477

1434

if not self.server_address[0]:

1478

1435

if self.address_family == socket.AF_INET6:

1479

any_address = "::" # in6addr_any

1436

any_address = u"::" # in6addr_any

1480

1437

else:

1481

1438

any_address = socket.INADDR_ANY

1482

1439

self.server_address = (any_address,

1531

1488

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

1532

1489

client_object=None):

1533

1490

condition_names = {

1534

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

1535

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

1491

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

1492

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

1536

1493

# blocking).

1537

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

1538

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

1539

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

1494

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

1495

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

1496

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

1540

1497

# broken, usually for pipes and

1541

1498

# sockets).

1542

1499

}

1561

1518

client = c

1562

1519

break

1563

1520

else:

1564

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

1565

"dress: %s", fpr, address)

1521

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

1522

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

1566

1523

if self.use_dbus:

1567

1524

# Emit D-Bus signal

1568

1525

mandos_dbus_service.ClientNotFound(fpr, address[0])

1602

1559

def string_to_delta(interval):

1603

1560

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

1604

1561

1605

>>> string_to_delta('7d')

1562

>>> string_to_delta(u'7d')

1606

1563

datetime.timedelta(7)

1607

>>> string_to_delta('60s')

1564

>>> string_to_delta(u'60s')

1608

1565

datetime.timedelta(0, 60)

1609

>>> string_to_delta('60m')

1566

>>> string_to_delta(u'60m')

1610

1567

datetime.timedelta(0, 3600)

1611

>>> string_to_delta('24h')

1568

>>> string_to_delta(u'24h')

1612

1569

datetime.timedelta(1)

1613

>>> string_to_delta('1w')

1570

>>> string_to_delta(u'1w')

1614

1571

datetime.timedelta(7)

1615

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

1572

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

1616

1573

datetime.timedelta(0, 330)

1617

1574

"""

1618

1575

timevalue = datetime.timedelta(0)

1620

1577

try:

1621

1578

suffix = unicode(s[-1])

1622

1579

value = int(s[:-1])

1623

if suffix == "d":

1580

if suffix == u"d":

1624

1581

delta = datetime.timedelta(value)

1625

elif suffix == "s":

1582

elif suffix == u"s":

1626

1583

delta = datetime.timedelta(0, value)

1627

elif suffix == "m":

1584

elif suffix == u"m":

1628

1585

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

1629

elif suffix == "h":

1586

elif suffix == u"h":

1630

1587

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

1631

elif suffix == "w":

1588

elif suffix == u"w":

1632

1589

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

1633

1590

else:

1634

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

1635

except (ValueError, IndexError) as e:

1636

raise ValueError(*(e.args))

1591

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

1592

except (ValueError, IndexError), e:

1593

raise ValueError(e.message)

1637

1594

timevalue += delta

1638

1595

return timevalue

1639

1596

1645

1602

global if_nametoindex

1646

1603

try:

1647

1604

if_nametoindex = (ctypes.cdll.LoadLibrary

1648

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

1605

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

1649

1606

.if_nametoindex)

1650

1607

except (OSError, AttributeError):

1651

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

1608

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

1652

1609

def if_nametoindex(interface):

1653

1610

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

1654

1611

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

1655

1612

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

1656

1613

ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

1657

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

1614

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

1658

1615

interface))

1659

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

1616

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

1660

1617

ifreq[16:20])[0]

1661

1618

return interface_index

1662

1619

return if_nametoindex(interface)

1670

1627

sys.exit()

1671

1628

os.setsid()

1672

1629

if not nochdir:

1673

os.chdir("/")

1630

os.chdir(u"/")

1674

1631

if os.fork():

1675

1632

sys.exit()

1676

1633

if not noclose:

1678

1635

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

1679

1636

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

1680

1637

raise OSError(errno.ENODEV,

1681

"%s not a character device"

1638

u"%s not a character device"

1682

1639

% os.path.devnull)

1683

1640

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

1684

1641

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

1692

1649

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

1693

1650

# Parsing of options, both command line and config file

1694

1651

1695

parser = argparse.ArgumentParser()

1696

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

1697

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

1698

help="show version number and exit")

1699

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

1700

help="Bind to interface IF")

1701

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

1702

help="Address to listen for requests on")

1703

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

1704

help="Port number to receive requests on")

1705

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

1706

help="Run self-test")

1707

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

1708

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

1709

" to terminal")

1710

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

1711

help="Debug level for stdout output")

1712

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

1713

" priority string (see GnuTLS documentation)")

1714

parser.add_argument("--servicename",

1715

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

1716

parser.add_argument("--configdir",

1717

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

1718

help="Directory to search for configuration"

1719

" files")

1720

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

1721

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

1722

" system bus interface")

1723

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

1724

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

1725

options = parser.parse_args()

1652

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

1653

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

1654

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

1655

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

1656

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

1657

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

1658

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

1659

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

1660

help=u"Run self-test")

1661

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

1662

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

1663

u" terminal")

1664

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

1665

help=u"Debug level for stdout output")

1666

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

1667

u" priority string (see GnuTLS documentation)")

1668

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

1669

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

1670

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

1671

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

1672

help=u"Directory to search for configuration"

1673

u" files")

1674

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

1675

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

1676

u" system bus interface")

1677

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

1678

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

1679

options = parser.parse_args()[0]

1726

1680

1727

1681

if options.check:

1728

1682

import doctest

1730

1684

sys.exit()

1731

1685

1732

1686

# Default values for config file for server-global settings

1733

server_defaults = { "interface": "",

1734

"address": "",

1735

"port": "",

1736

"debug": "False",

1737

"priority":

1738

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

1739

"servicename": "Mandos",

1740

"use_dbus": "True",

1741

"use_ipv6": "True",

1742

"debuglevel": "",

1687

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

1688

u"address": u"",

1689

u"port": u"",

1690

u"debug": u"False",

1691

u"priority":

1692

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

1693

u"servicename": u"Mandos",

1694

u"use_dbus": u"True",

1695

u"use_ipv6": u"True",

1696

u"debuglevel": u"",

1743

1697

}

1744

1698

1745

1699

# Parse config file for server-global settings

1746

1700

server_config = configparser.SafeConfigParser(server_defaults)

1747

1701

del server_defaults

1748

1702

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

1749

"mandos.conf"))

1703

u"mandos.conf"))

1750

1704

# Convert the SafeConfigParser object to a dict

1751

1705

server_settings = server_config.defaults()

1752

1706

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

1753

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

1754

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

1707

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

1708

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

1755

1709

option)

1756

1710

if server_settings["port"]:

1757

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

1758

"port")

1711

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

1712

u"port")

1759

1713

del server_config

1760

1714

1761

1715

# Override the settings from the config file with command line

1762

1716

# options, if set.

1763

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

1764

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

1765

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

1717

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

1718

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

1719

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

1766

1720

value = getattr(options, option)

1767

1721

if value is not None:

1768

1722

server_settings[option] = value

1776

1730

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

1777

1731

1778

1732

# For convenience

1779

debug = server_settings["debug"]

1780

debuglevel = server_settings["debuglevel"]

1781

use_dbus = server_settings["use_dbus"]

1782

use_ipv6 = server_settings["use_ipv6"]

1733

debug = server_settings[u"debug"]

1734

debuglevel = server_settings[u"debuglevel"]

1735

use_dbus = server_settings[u"use_dbus"]

1736

use_ipv6 = server_settings[u"use_ipv6"]

1783

1737

1784

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

1738

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

1785

1739

syslogger.setFormatter(logging.Formatter

1786

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

1787

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

1788

% server_settings["servicename"]))

1740

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

1741

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

1742

% server_settings[u"servicename"]))

1789

1743

1790

1744

# Parse config file with clients

1791

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

1792

"interval": "5m",

1793

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

1794

"host": "",

1795

"approval_delay": "0s",

1796

"approval_duration": "1s",

1745

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

1746

u"interval": u"5m",

1747

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

1748

u"host": u"",

1749

u"approval_delay": u"0s",

1750

u"approval_duration": u"1s",

1797

1751

}

1798

1752

client_config = configparser.SafeConfigParser(client_defaults)

1799

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

1800

"clients.conf"))

1753

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

1754

u"clients.conf"))

1801

1755

1802

1756

global mandos_dbus_service

1803

1757

mandos_dbus_service = None

1804

1758

1805

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

1806

server_settings["port"]),

1759

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

1760

server_settings[u"port"]),

1807

1761

ClientHandler,

1808

interface=(server_settings["interface"]

1762

interface=(server_settings[u"interface"]

1809

1763

or None),

1810

1764

use_ipv6=use_ipv6,

1811

1765

gnutls_priority=

1812

server_settings["priority"],

1766

server_settings[u"priority"],

1813

1767

use_dbus=use_dbus)

1814

1768

if not debug:

1815

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

1769

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

1816

1770

try:

1817

pidfile = open(pidfilename, "w")

1771

pidfile = open(pidfilename, u"w")

1818

1772

except IOError:

1819

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

1773

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

1820

1774

1821

1775

try:

1822

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

1823

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

1776

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

1777

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

1824

1778

except KeyError:

1825

1779

try:

1826

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

1827

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

1780

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

1781

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

1828

1782

except KeyError:

1829

1783

try:

1830

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

1831

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

1784

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

1785

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

1832

1786

except KeyError:

1833

1787

uid = 65534

1834

1788

gid = 65534

1835

1789

try:

1836

1790

os.setgid(gid)

1837

1791

os.setuid(uid)

1838

except OSError as error:

1792

except OSError, error:

1839

1793

if error[0] != errno.EPERM:

1840

1794

raise error

1841

1795

1856

1810

1857

1811

@gnutls.library.types.gnutls_log_func

1858

1812

def debug_gnutls(level, string):

1859

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

1813

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

1860

1814

1861

1815

(gnutls.library.functions

1862

1816

.gnutls_global_set_log_function(debug_gnutls))

1870

1824

# No console logging

1871

1825

logger.removeHandler(console)

1872

1826

1873

# Need to fork before connecting to D-Bus

1874

if not debug:

1875

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

1876

daemon()

1877

1827

1878

1828

global main_loop

1879

1829

# From the Avahi example code

1883

1833

# End of Avahi example code

1884

1834

if use_dbus:

1885

1835

try:

1886

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

1836

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

1887

1837

bus, do_not_queue=True)

1888

except dbus.exceptions.NameExistsException as e:

1889

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

1838

except dbus.exceptions.NameExistsException, e:

1839

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

1890

1840

use_dbus = False

1891

server_settings["use_dbus"] = False

1841

server_settings[u"use_dbus"] = False

1892

1842

tcp_server.use_dbus = False

1893

1843

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

1894

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

1895

servicetype = "_mandos._tcp",

1844

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

1845

servicetype = u"_mandos._tcp",

1896

1846

protocol = protocol, bus = bus)

1897

1847

if server_settings["interface"]:

1898

1848

service.interface = (if_nametoindex

1899

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

1900

1849

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

1850

1851

if not debug:

1852

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

1853

daemon()

1854

1901

1855

global multiprocessing_manager

1902

1856

multiprocessing_manager = multiprocessing.Manager()

1903

1857

1922

1876

client_config, section)))

1923

1877

for section in client_config.sections()))

1924

1878

if not tcp_server.clients:

1925

logger.warning("No clients defined")

1879

logger.warning(u"No clients defined")

1926

1880

1927

1881

if not debug:

1928

1882

try:

1929

1883

with pidfile:

1930

1884

pid = os.getpid()

1931

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

1885

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

1932

1886

del pidfile

1933

1887

except IOError:

1934

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

1888

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

1935

1889

pidfilename, pid)

1936

1890

except NameError:

1937

1891

# "pidfile" was never created

1947

1901

class MandosDBusService(dbus.service.Object):

1948

1902

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

1949

1903

def __init__(self):

1950

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

1951

_interface = "se.bsnet.fukt.Mandos"

1904

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

1905

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

1952

1906

1953

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

1907

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

1954

1908

def ClientAdded(self, objpath):

1955

1909

"D-Bus signal"

1956

1910

pass

1957

1911

1958

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

1912

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

1959

1913

def ClientNotFound(self, fingerprint, address):

1960

1914

"D-Bus signal"

1961

1915

pass

1962

1916

1963

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

1917

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

1964

1918

def ClientRemoved(self, objpath, name):

1965

1919

"D-Bus signal"

1966

1920

pass

1967

1921

1968

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

1922

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

1969

1923

def GetAllClients(self):

1970

1924

"D-Bus method"

1971

1925

return dbus.Array(c.dbus_object_path

1972

1926

for c in tcp_server.clients)

1973

1927

1974

1928

@dbus.service.method(_interface,

1975

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

1929

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

1976

1930

def GetAllClientsWithProperties(self):

1977

1931

"D-Bus method"

1978

1932

return dbus.Dictionary(

1979

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

1933

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

1980

1934

for c in tcp_server.clients),

1981

signature="oa{sv}")

1935

signature=u"oa{sv}")

1982

1936

1983

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

1937

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

1984

1938

def RemoveClient(self, object_path):

1985

1939

"D-Bus method"

1986

1940

for c in tcp_server.clients:

2028

1982

# Find out what port we got

2029

1983

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

2030

1984

if use_ipv6:

2031

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

1985

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

2032

1986

" flowinfo %d, scope_id %d"

2033

1987

% tcp_server.socket.getsockname())

2034

1988

else: # IPv4

2035

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

1989

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

2036

1990

% tcp_server.socket.getsockname())

2037

1991

2038

1992

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

2041

1995

# From the Avahi example code

2042

1996

try:

2043

1997

service.activate()

2044

except dbus.exceptions.DBusException as error:

2045

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

1998

except dbus.exceptions.DBusException, error:

1999

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

2046

2000

cleanup()

2047

2001

sys.exit(1)

2048

2002

# End of Avahi example code

2052

2006

(tcp_server.handle_request

2053

2007

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

2054

2008

2055

logger.debug("Starting main loop")

2009

logger.debug(u"Starting main loop")

2056

2010

main_loop.run()

2057

except AvahiError as error:

2058

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

2011

except AvahiError, error:

2012

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

2059

2013

cleanup()

2060

2014

sys.exit(1)

2061

2015

except KeyboardInterrupt:

2062

2016

if debug:

2063

print("", file=sys.stderr)

2064

logger.debug("Server received KeyboardInterrupt")

2065

logger.debug("Server exiting")

2017

print >> sys.stderr

2018

logger.debug(u"Server received KeyboardInterrupt")

2019

logger.debug(u"Server exiting")

2066

2020

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

2067

2021

cleanup()

2068

2022