/mandos/trunk : revision 481

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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, with_statement, absolute_import

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from __future__ import (division, absolute_import, print_function,

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unicode_literals)

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import SocketServer as socketserver

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import socket

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import optparse

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import argparse

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import datetime

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import errno

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import gnutls.crypto

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SO_BINDTODEVICE = None

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version = "1.0.14"

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version = "1.3.0"

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

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logger = logging.Logger(u'mandos')

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#logger = logging.getLogger('mandos')

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logger = logging.Logger('mandos')

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syslogger = (logging.handlers.SysLogHandler

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(facility = logging.handlers.SysLogHandler.LOG_DAEMON,

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address = "/dev/log"))

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

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syslogger.setFormatter(logging.Formatter

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

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u' %(message)s'))

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

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' %(message)s'))

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logger.addHandler(syslogger)

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console = logging.StreamHandler()

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

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u' %(levelname)s:'

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u' %(message)s'))

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

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' %(levelname)s:'

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' %(message)s'))

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logger.addHandler(console)

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class AvahiError(Exception):

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Attributes:

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

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Used to optionally bind to the specified interface.

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name: string; Example: u'Mandos'

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

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name: string; Example: 'Mandos'

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

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

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port: integer; what port to announce

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TXT: list of strings; TXT record for the service

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"""

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

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

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

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

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protocol = avahi.PROTO_UNSPEC, bus = None):

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self.interface = interface

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self.name = name

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def rename(self):

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

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if self.rename_count >= self.max_renames:

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

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u" after %i retries, exiting.",

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

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" after %i retries, exiting.",

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self.rename_count)

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raise AvahiServiceError(u"Too many renames")

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raise AvahiServiceError("Too many renames")

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

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

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

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self.name)

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syslogger.setFormatter(logging.Formatter

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

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

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

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

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% self.name))

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self.remove()

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try:

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self.add()

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except dbus.exceptions.DBusException, error:

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

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

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self.cleanup()

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os._exit(1)

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self.rename_count += 1

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

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self.name, self.type)

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self.group.AddService(

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self.interface,

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self.group.Commit()

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def entry_group_state_changed(self, state, error):

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

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

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

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if state == avahi.ENTRY_GROUP_ESTABLISHED:

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

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logger.debug("Zeroconf service established.")

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elif state == avahi.ENTRY_GROUP_COLLISION:

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

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

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self.rename()

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elif state == avahi.ENTRY_GROUP_FAILURE:

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

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

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unicode(error))

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raise AvahiGroupError(u"State changed: %s"

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raise AvahiGroupError("State changed: %s"

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% unicode(error))

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def cleanup(self):

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

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

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logger.debug("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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logger.error("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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self.bus.get_object(avahi.DBUS_NAME,

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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(u"StateChanged",

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self.server.connect_to_signal("StateChanged",

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self.server_state_changed)

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

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runtime_expansions: Allowed attributes for runtime expansion.

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"""

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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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runtime_expansions = ("approval_delay", "approval_duration",

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

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

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

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@staticmethod

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def _timedelta_to_milliseconds(td):

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self.name = name

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if config is None:

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config = {}

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

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logger.debug("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[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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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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with open(os.path.expanduser(os.path.expandvars

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(config[u"secfile"])),

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(config["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(u"No secret or secfile for client %s"

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

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% self.name)

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

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

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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[u"timeout"])

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

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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.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[u"checker"]

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self.checker_command = config["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(u"approved_by_default",

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self.approved_by_default = config.get("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[u"approval_delay"])

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config["approval_delay"])

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self.approval_duration = string_to_delta(

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config[u"approval_duration"])

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config["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, u"enabled", False):

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if getattr(self, "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(u"Disabling client %s", self.name)

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

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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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gobject.source_remove(self.disable_initiator_tag)

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self.disable_initiator_tag = None

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

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if getattr(self, "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(u"Checker for %(name)s succeeded",

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

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

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vars(self))

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else:

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

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

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vars(self))

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def checked_ok(self):

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raise error

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else:

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if pid:

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

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logger.warning("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, u"")),

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

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errors=

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u'replace')))

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

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' %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(u"Starting checker %r for %s",

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logger.info("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=u"/")

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shell=True, cwd="/")

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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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gobject.source_remove(self.checker_callback_tag)

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self.checker_callback(pid, status, command)

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except OSError, error:

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

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logger.error("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, u"checker", None) is None:

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

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return

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

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logger.debug("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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raise

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self.checker = None

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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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def dbus_service_property(dbus_interface, signature="v",

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access="readwrite", byte_arrays=False):

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"""Decorators for marking methods of a DBusObjectWithProperties to

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become properties on the D-Bus.

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"""

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

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

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if byte_arrays and signature != 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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if byte_arrays and signature != "ay":

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

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" signature %r" % signature)

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541

def decorator(func):

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func._dbus_is_property = True

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func._dbus_interface = dbus_interface

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func._dbus_signature = signature

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func._dbus_access = access

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func._dbus_name = func.__name__

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

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

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

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

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func._dbus_get_args_options = {'byte_arrays': byte_arrays }

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return func

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return decorator

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552

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@staticmethod

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def _is_dbus_property(obj):

582

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

583

return getattr(obj, "_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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595

"""

595

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for name in (property_name,

596

property_name + u"_dbus_property"):

597

property_name + "_dbus_property"):

597

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prop = getattr(self, name, None)

598

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if (prop is None

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or not self._is_dbus_property(prop)

603

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continue

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return prop

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# No such property

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raise DBusPropertyNotFound(self.dbus_object_path + u":"

607

+ interface_name + u"."

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raise DBusPropertyNotFound(self.dbus_object_path + ":"

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+ interface_name + "."

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+ property_name)

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

611

out_signature=u"v")

611

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

612

out_signature="v")

612

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def Get(self, interface_name, property_name):

613

614

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

614

615

"""

615

616

prop = self._get_dbus_property(interface_name, property_name)

616

if prop._dbus_access == u"write":

617

if prop._dbus_access == "write":

617

618

raise DBusPropertyAccessException(property_name)

618

619

value = prop()

619

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

620

if not hasattr(value, "variant_level"):

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621

return value

621

622

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

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623

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

624

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

624

625

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

625

626

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

626

627

"""

627

628

prop = self._get_dbus_property(interface_name, property_name)

628

if prop._dbus_access == u"read":

629

if prop._dbus_access == "read":

629

630

raise DBusPropertyAccessException(property_name)

630

if prop._dbus_get_args_options[u"byte_arrays"]:

631

if prop._dbus_get_args_options["byte_arrays"]:

631

632

# The byte_arrays option is not supported yet on

632

633

# signatures other than "ay".

633

if prop._dbus_signature != u"ay":

634

if prop._dbus_signature != "ay":

634

635

raise ValueError

635

636

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

636

637

for byte in value))

637

638

prop(value)

638

639

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

640

out_signature=u"a{sv}")

640

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

641

out_signature="a{sv}")

641

642

def GetAll(self, interface_name):

642

643

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

643

644

standard.

651

652

# Interface non-empty but did not match

652

653

continue

653

654

# Ignore write-only properties

654

if prop._dbus_access == u"write":

655

if prop._dbus_access == "write":

655

656

continue

656

657

value = prop()

657

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

658

if not hasattr(value, "variant_level"):

658

659

all[name] = value

659

660

continue

660

661

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

661

662

value.variant_level+1)

662

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

663

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

663

664

665

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

665

out_signature=u"s",

666

out_signature="s",

666

667

path_keyword='object_path',

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668

connection_keyword='connection')

668

669

def Introspect(self, object_path, connection):

673

674

try:

674

675

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

675

676

def make_tag(document, name, prop):

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)

677

e = document.createElement("property")

678

e.setAttribute("name", name)

679

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

680

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

680

681

return e

681

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

682

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

682

683

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

683

684

for name, prop

684

685

in self._get_all_dbus_properties()

685

686

if prop._dbus_interface

686

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

687

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

687

688

if_tag.appendChild(tag)

688

689

# Add the names to the return values for the

689

690

# "org.freedesktop.DBus.Properties" methods

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")

691

if (if_tag.getAttribute("name")

692

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

693

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

694

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

695

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

696

if (arg.getAttribute("direction")

697

== "out"):

698

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

699

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

700

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

701

if (arg.getAttribute("direction")

702

== "out"):

703

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

704

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

704

705

document.unlink()

705

706

except (AttributeError, xml.dom.DOMException,

706

707

xml.parsers.expat.ExpatError), error:

707

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

708

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

708

709

error)

709

710

return xmlstring

710

711

718

719

"""

719

720

721

runtime_expansions = (Client.runtime_expansions

721

+ (u"dbus_object_path",))

722

+ ("dbus_object_path",))

722

723

724

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

724

725

729

730

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

730

731

# the D-Bus

731

732

client_object_name = unicode(self.name).translate(

732

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

733

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

733

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

734

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

734

735

self.dbus_object_path = (dbus.ObjectPath

735

(u"/clients/" + client_object_name))

736

("/clients/" + client_object_name))

736

737

DBusObjectWithProperties.__init__(self, self.bus,

737

738

self.dbus_object_path)

738

739

745

746

if (hasattr(self, "dbus_object_path")

746

747

and bval is not bool(old_value)):

747

748

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

748

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

749

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

749

750

dbus_bool)

750

751

752

approvals_pending = property(_get_approvals_pending,

759

760

variant_level=variant_level)

760

761

762

def enable(self):

762

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

763

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

763

764

r = Client.enable(self)

764

765

if oldstate != self.enabled:

765

766

# Emit D-Bus signals

766

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

767

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

767

768

dbus.Boolean(True, variant_level=1))

768

769

self.PropertyChanged(

769

dbus.String(u"LastEnabled"),

770

dbus.String("LastEnabled"),

770

771

self._datetime_to_dbus(self.last_enabled,

771

772

variant_level=1))

772

773

return r

773

774

775

def disable(self, quiet = False):

775

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

776

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

776

777

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

777

778

if not quiet and oldstate != self.enabled:

778

779

# Emit D-Bus signal

779

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

780

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

780

781

dbus.Boolean(False, variant_level=1))

781

782

return r

782

783

785

786

self.remove_from_connection()

786

787

except LookupError:

787

788

pass

788

if hasattr(DBusObjectWithProperties, u"__del__"):

789

if hasattr(DBusObjectWithProperties, "__del__"):

789

790

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

790

791

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

791

792

794

795

self.checker_callback_tag = None

795

796

self.checker = None

796

797

# Emit D-Bus signal

797

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

798

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

798

799

dbus.Boolean(False, variant_level=1))

799

800

if os.WIFEXITED(condition):

800

801

exitstatus = os.WEXITSTATUS(condition)

815

816

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

816

817

# Emit D-Bus signal

817

818

self.PropertyChanged(

818

dbus.String(u"LastCheckedOK"),

819

dbus.String("LastCheckedOK"),

819

820

(self._datetime_to_dbus(self.last_checked_ok,

820

821

variant_level=1)))

821

822

return r

824

825

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

825

826

# Emit D-Bus signal

826

827

self.PropertyChanged(

827

dbus.String(u"LastApprovalRequest"),

828

dbus.String("LastApprovalRequest"),

828

829

(self._datetime_to_dbus(self.last_approval_request,

829

830

variant_level=1)))

830

831

return r

842

843

# Emit D-Bus signal

843

844

self.CheckerStarted(self.current_checker_command)

844

845

self.PropertyChanged(

845

dbus.String(u"CheckerRunning"),

846

dbus.String("CheckerRunning"),

846

847

dbus.Boolean(True, variant_level=1))

847

848

return r

848

849

850

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

850

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

851

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

851

852

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

852

853

if (old_checker is not None

853

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

854

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

854

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

855

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

855

856

dbus.Boolean(False, variant_level=1))

856

857

return r

857

858

868

869

870

871

## D-Bus methods, signals & properties

871

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

872

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

872

873

874

## Signals

874

875

876

# CheckerCompleted - signal

876

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

877

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

877

878

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

878

879

"D-Bus signal"

879

880

pass

880

881

882

# CheckerStarted - signal

882

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

883

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

883

884

def CheckerStarted(self, command):

884

885

"D-Bus signal"

885

886

pass

886

887

888

# PropertyChanged - signal

888

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

889

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

889

890

def PropertyChanged(self, property, value):

890

891

"D-Bus signal"

891

892

pass

900

901

pass

901

902

903

# Rejected - signal

903

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

904

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

904

905

def Rejected(self, reason):

905

906

"D-Bus signal"

906

907

pass

907

908

909

# NeedApproval - signal

909

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

910

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

910

911

def NeedApproval(self, timeout, default):

911

912

"D-Bus signal"

912

913

return self.need_approval()

914

915

## Methods

915

916

917

# Approve - method

917

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

918

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

918

919

def Approve(self, value):

919

920

self.approve(value)

920

921

949

950

## Properties

950

951

952

# ApprovalPending - property

952

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

953

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

953

954

def ApprovalPending_dbus_property(self):

954

955

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

955

956

957

# ApprovedByDefault - property

957

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

958

access=u"readwrite")

958

@dbus_service_property(_interface, signature="b",

959

access="readwrite")

959

960

def ApprovedByDefault_dbus_property(self, value=None):

960

961

if value is None: # get

961

962

return dbus.Boolean(self.approved_by_default)

962

963

self.approved_by_default = bool(value)

963

964

# Emit D-Bus signal

964

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

965

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

965

966

dbus.Boolean(value, variant_level=1))

966

967

968

# ApprovalDelay - property

968

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

969

access=u"readwrite")

969

@dbus_service_property(_interface, signature="t",

970

access="readwrite")

970

971

def ApprovalDelay_dbus_property(self, value=None):

971

972

if value is None: # get

972

973

return dbus.UInt64(self.approval_delay_milliseconds())

973

974

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

974

975

# Emit D-Bus signal

975

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

976

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

976

977

dbus.UInt64(value, variant_level=1))

977

978

979

# ApprovalDuration - property

979

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

980

access=u"readwrite")

980

@dbus_service_property(_interface, signature="t",

981

access="readwrite")

981

982

def ApprovalDuration_dbus_property(self, value=None):

982

983

if value is None: # get

983

984

return dbus.UInt64(self._timedelta_to_milliseconds(

984

985

self.approval_duration))

985

986

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

986

987

# Emit D-Bus signal

987

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

988

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

988

989

dbus.UInt64(value, variant_level=1))

989

990

991

# Name - property

991

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

992

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

992

993

def Name_dbus_property(self):

993

994

return dbus.String(self.name)

994

995

996

# Fingerprint - property

996

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

997

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

997

998

def Fingerprint_dbus_property(self):

998

999

return dbus.String(self.fingerprint)

999

1000

1001

# Host - property

1001

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

1002

access=u"readwrite")

1002

@dbus_service_property(_interface, signature="s",

1003

access="readwrite")

1003

1004

def Host_dbus_property(self, value=None):

1004

1005

if value is None: # get

1005

1006

return dbus.String(self.host)

1006

1007

self.host = value

1007

1008

# Emit D-Bus signal

1008

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

1009

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

1009

1010

dbus.String(value, variant_level=1))

1010

1011

1012

# Created - property

1012

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

1013

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

1013

1014

def Created_dbus_property(self):

1014

1015

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

1015

1016

1017

# LastEnabled - property

1017

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

1018

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

1018

1019

def LastEnabled_dbus_property(self):

1019

1020

if self.last_enabled is None:

1020

return dbus.String(u"")

1021

return dbus.String("")

1021

1022

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

1022

1023

1024

# Enabled - property

1024

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

1025

access=u"readwrite")

1025

@dbus_service_property(_interface, signature="b",

1026

access="readwrite")

1026

1027

def Enabled_dbus_property(self, value=None):

1027

1028

if value is None: # get

1028

1029

return dbus.Boolean(self.enabled)

1032

1033

self.disable()

1033

1034

1035

# LastCheckedOK - property

1035

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

1036

access=u"readwrite")

1036

@dbus_service_property(_interface, signature="s",

1037

access="readwrite")

1037

1038

def LastCheckedOK_dbus_property(self, value=None):

1038

1039

if value is not None:

1039

1040

self.checked_ok()

1040

1041

return

1041

1042

if self.last_checked_ok is None:

1042

return dbus.String(u"")

1043

return dbus.String("")

1043

1044

return dbus.String(self._datetime_to_dbus(self

1044

1045

.last_checked_ok))

1045

1046

1047

# LastApprovalRequest - property

1047

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

1048

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

1048

1049

def LastApprovalRequest_dbus_property(self):

1049

1050

if self.last_approval_request is None:

1050

return dbus.String(u"")

1051

return dbus.String("")

1051

1052

return dbus.String(self.

1052

1053

_datetime_to_dbus(self

1053

1054

.last_approval_request))

1054

1055

1056

# Timeout - property

1056

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

1057

access=u"readwrite")

1057

@dbus_service_property(_interface, signature="t",

1058

access="readwrite")

1058

1059

def Timeout_dbus_property(self, value=None):

1059

1060

if value is None: # get

1060

1061

return dbus.UInt64(self.timeout_milliseconds())

1061

1062

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

1062

1063

# Emit D-Bus signal

1063

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

1064

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

1064

1065

dbus.UInt64(value, variant_level=1))

1065

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

1066

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

1066

1067

return

1067

1068

# Reschedule timeout

1068

1069

gobject.source_remove(self.disable_initiator_tag)

1081

1082

(time_to_die, self.disable))

1082

1083

1084

# Interval - property

1084

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

1085

access=u"readwrite")

1085

@dbus_service_property(_interface, signature="t",

1086

access="readwrite")

1086

1087

def Interval_dbus_property(self, value=None):

1087

1088

if value is None: # get

1088

1089

return dbus.UInt64(self.interval_milliseconds())

1089

1090

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

1090

1091

# Emit D-Bus signal

1091

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

1092

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

1092

1093

dbus.UInt64(value, variant_level=1))

1093

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

1094

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

1094

1095

return

1095

1096

# Reschedule checker run

1096

1097

gobject.source_remove(self.checker_initiator_tag)

1099

1100

self.start_checker() # Start one now, too

1100

1101

1102

# Checker - property

1102

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

1103

access=u"readwrite")

1103

@dbus_service_property(_interface, signature="s",

1104

access="readwrite")

1104

1105

def Checker_dbus_property(self, value=None):

1105

1106

if value is None: # get

1106

1107

return dbus.String(self.checker_command)

1107

1108

self.checker_command = value

1108

1109

# Emit D-Bus signal

1109

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

1110

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

1110

1111

dbus.String(self.checker_command,

1111

1112

variant_level=1))

1112

1113

1114

# CheckerRunning - property

1114

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

1115

access=u"readwrite")

1115

@dbus_service_property(_interface, signature="b",

1116

access="readwrite")

1116

1117

def CheckerRunning_dbus_property(self, value=None):

1117

1118

if value is None: # get

1118

1119

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

1122

1123

self.stop_checker()

1123

1124

1125

# ObjectPath - property

1125

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

1126

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

1126

1127

def ObjectPath_dbus_property(self):

1127

1128

return self.dbus_object_path # is already a dbus.ObjectPath

1128

1129

1130

# Secret = property

1130

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

1131

access=u"write", byte_arrays=True)

1131

@dbus_service_property(_interface, signature="ay",

1132

access="write", byte_arrays=True)

1132

1133

def Secret_dbus_property(self, value):

1133

1134

self.secret = str(value)

1134

1135

1169

1170

1171

def handle(self):

1171

1172

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

1172

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

1173

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

1173

1174

unicode(self.client_address))

1174

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

1175

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

1175

1176

self.server.child_pipe.fileno())

1176

1177

1178

session = (gnutls.connection

1184

1185

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

1185

1186

# here despite using OpenPGP certificates.

1186

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"))

1188

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

1189

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

1190

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

1191

# "+DHE-DSS"))

1191

1192

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

1192

1193

priority = self.server.gnutls_priority

1193

1194

if priority is None:

1194

priority = u"NORMAL"

1195

priority = "NORMAL"

1195

1196

(gnutls.library.functions

1196

1197

.gnutls_priority_set_direct(session._c_object,

1197

1198

priority, None))

1199

1200

# Start communication using the Mandos protocol

1200

1201

# Get protocol number

1201

1202

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

1202

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

1203

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

1203

1204

try:

1204

1205

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

1205

1206

raise RuntimeError

1206

1207

except (ValueError, IndexError, RuntimeError), error:

1207

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

1208

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

1208

1209

return

1209

1210

1211

# Start GnuTLS connection

1211

1212

try:

1212

1213

session.handshake()

1213

1214

except gnutls.errors.GNUTLSError, error:

1214

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

1215

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

1215

1216

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

1216

1217

# established. Just abandon the request.

1217

1218

return

1218

logger.debug(u"Handshake succeeded")

1219

logger.debug("Handshake succeeded")

1219

1220

1221

approval_required = False

1221

1222

try:

1223

1224

fpr = self.fingerprint(self.peer_certificate

1224

1225

(session))

1225

1226

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

1226

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

1227

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

1227

1228

return

1228

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

1229

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

1229

1230

1231

try:

1231

1232

client = ProxyClient(child_pipe, fpr,

1240

1241

1242

while True:

1242

1243

if not client.enabled:

1243

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

1244

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

1244

1245

client.name)

1245

1246

if self.server.use_dbus:

1246

1247

# Emit D-Bus signal

1251

1252

#We are approved or approval is disabled

1252

1253

break

1253

1254

elif client._approved is None:

1254

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

1255

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

1255

1256

client.name)

1256

1257

if self.server.use_dbus:

1257

1258

# Emit D-Bus signal

1259

1260

client.approval_delay_milliseconds(),

1260

1261

client.approved_by_default)

1261

1262

else:

1262

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

1263

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

1263

1264

client.name)

1264

1265

if self.server.use_dbus:

1265

1266

# Emit D-Bus signal

1294

1295

except (gnutls.errors.GNUTLSError), error:

1295

1296

logger.warning("gnutls send failed")

1296

1297

return

1297

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

1298

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

1298

1299

sent, len(client.secret)

1299

1300

- (sent_size + sent))

1300

1301

sent_size += sent

1301

1302

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

1303

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

1303

1304

# bump the timeout as if seen

1304

1305

client.checked_ok()

1305

1306

if self.server.use_dbus:

1328

1329

.gnutls_certificate_get_peers

1329

1330

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

1330

1331

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

1331

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

1332

u" certificate")

1332

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

1333

" certificate")

1333

1334

if list_size.value == 0:

1334

1335

return None

1335

1336

cert = cert_list[0]

1361

1362

if crtverify.value != 0:

1362

1363

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1363

1364

raise (gnutls.errors.CertificateSecurityError

1364

(u"Verify failed"))

1365

("Verify failed"))

1365

1366

# New buffer for the fingerprint

1366

1367

buf = ctypes.create_string_buffer(20)

1367

1368

buf_len = ctypes.c_size_t()

1374

1375

# Convert the buffer to a Python bytestring

1375

1376

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

1376

1377

# Convert the bytestring to hexadecimal notation

1377

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

1378

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

1378

1379

return hex_fpr

1379

1380

1381

1408

1409

1410

def add_pipe(self, parent_pipe):

1410

1411

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

1411

pass

1412

raise NotImplementedError

1412

1413

1414

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

1414

1415

socketserver.TCPServer, object):

1432

1433

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

1433

1434

if self.interface is not None:

1434

1435

if SO_BINDTODEVICE is None:

1435

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

1436

u" cannot bind to interface %s",

1436

logger.error("SO_BINDTODEVICE does not exist;"

1437

" cannot bind to interface %s",

1437

1438

self.interface)

1438

1439

else:

1439

1440

try:

1440

1441

self.socket.setsockopt(socket.SOL_SOCKET,

1441

1442

SO_BINDTODEVICE,

1442

1443

str(self.interface

1443

+ u'\0'))

1444

+ '\0'))

1444

1445

except socket.error, error:

1445

1446

if error[0] == errno.EPERM:

1446

logger.error(u"No permission to"

1447

u" bind to interface %s",

1447

logger.error("No permission to"

1448

" bind to interface %s",

1448

1449

self.interface)

1449

1450

elif error[0] == errno.ENOPROTOOPT:

1450

logger.error(u"SO_BINDTODEVICE not available;"

1451

u" cannot bind to interface %s",

1451

logger.error("SO_BINDTODEVICE not available;"

1452

" cannot bind to interface %s",

1452

1453

self.interface)

1453

1454

else:

1454

1455

raise

1456

1457

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

1457

1458

if not self.server_address[0]:

1458

1459

if self.address_family == socket.AF_INET6:

1459

any_address = u"::" # in6addr_any

1460

any_address = "::" # in6addr_any

1460

1461

else:

1461

1462

any_address = socket.INADDR_ANY

1462

1463

self.server_address = (any_address,

1511

1512

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

1512

1513

client_object=None):

1513

1514

condition_names = {

1514

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

1515

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

1515

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

1516

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

1516

1517

# blocking).

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

1518

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

1519

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

1520

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

1520

1521

# broken, usually for pipes and

1521

1522

# sockets).

1522

1523

}

1541

1542

client = c

1542

1543

break

1543

1544

else:

1544

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

1545

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

1545

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

1546

"dress: %s", fpr, address)

1546

1547

if self.use_dbus:

1547

1548

# Emit D-Bus signal

1548

1549

mandos_dbus_service.ClientNotFound(fpr, address[0])

1582

1583

def string_to_delta(interval):

1583

1584

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

1584

1585

>>> string_to_delta(u'7d')

1586

>>> string_to_delta('7d')

1586

1587

datetime.timedelta(7)

1587

>>> string_to_delta(u'60s')

1588

>>> string_to_delta('60s')

1588

1589

datetime.timedelta(0, 60)

1589

>>> string_to_delta(u'60m')

1590

>>> string_to_delta('60m')

1590

1591

datetime.timedelta(0, 3600)

1591

>>> string_to_delta(u'24h')

1592

>>> string_to_delta('24h')

1592

1593

datetime.timedelta(1)

1593

>>> string_to_delta(u'1w')

1594

>>> string_to_delta('1w')

1594

1595

datetime.timedelta(7)

1595

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

1596

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

1596

1597

datetime.timedelta(0, 330)

1597

1598

"""

1598

1599

timevalue = datetime.timedelta(0)

1600

1601

try:

1601

1602

suffix = unicode(s[-1])

1602

1603

value = int(s[:-1])

1603

if suffix == u"d":

1604

if suffix == "d":

1604

1605

delta = datetime.timedelta(value)

1605

elif suffix == u"s":

1606

elif suffix == "s":

1606

1607

delta = datetime.timedelta(0, value)

1607

elif suffix == u"m":

1608

elif suffix == "m":

1608

1609

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

1609

elif suffix == u"h":

1610

elif suffix == "h":

1610

1611

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

1611

elif suffix == u"w":

1612

elif suffix == "w":

1612

1613

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

1613

1614

else:

1614

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

1615

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

1615

1616

except (ValueError, IndexError), e:

1616

raise ValueError(e.message)

1617

raise ValueError(*(e.args))

1617

1618

timevalue += delta

1618

1619

return timevalue

1619

1620

1625

1626

global if_nametoindex

1626

1627

try:

1627

1628

if_nametoindex = (ctypes.cdll.LoadLibrary

1628

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

1629

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

1629

1630

.if_nametoindex)

1630

1631

except (OSError, AttributeError):

1631

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

1632

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

1632

1633

def if_nametoindex(interface):

1633

1634

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

1634

1635

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

1635

1636

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

1636

1637

ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

1637

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

1638

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

1638

1639

interface))

1639

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

1640

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

1640

1641

ifreq[16:20])[0]

1641

1642

return interface_index

1642

1643

return if_nametoindex(interface)

1650

1651

sys.exit()

1651

1652

os.setsid()

1652

1653

if not nochdir:

1653

os.chdir(u"/")

1654

os.chdir("/")

1654

1655

if os.fork():

1655

1656

sys.exit()

1656

1657

if not noclose:

1658

1659

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

1659

1660

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

1660

1661

raise OSError(errno.ENODEV,

1661

u"%s not a character device"

1662

"%s not a character device"

1662

1663

% os.path.devnull)

1663

1664

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

1664

1665

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

1672

1673

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

1673

1674

# Parsing of options, both command line and config file

1674

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]

1676

parser = argparse.ArgumentParser()

1677

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

1678

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

1679

help="show version number and exit")

1680

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

1681

help="Bind to interface IF")

1682

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

1683

help="Address to listen for requests on")

1684

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

1685

help="Port number to receive requests on")

1686

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

1687

help="Run self-test")

1688

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

1689

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

1690

" to terminal")

1691

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

1692

help="Debug level for stdout output")

1693

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

1694

" priority string (see GnuTLS documentation)")

1695

parser.add_argument("--servicename",

1696

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

1697

parser.add_argument("--configdir",

1698

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

1699

help="Directory to search for configuration"

1700

" files")

1701

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

1702

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

1703

" system bus interface")

1704

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

1705

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

1706

options = parser.parse_args()

1703

1707

1704

1708

if options.check:

1705

1709

import doctest

1707

1711

sys.exit()

1708

1712

1709

1713

# Default values for config file for server-global settings

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"",

1714

server_defaults = { "interface": "",

1715

"address": "",

1716

"port": "",

1717

"debug": "False",

1718

"priority":

1719

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

1720

"servicename": "Mandos",

1721

"use_dbus": "True",

1722

"use_ipv6": "True",

1723

"debuglevel": "",

1720

1724

}

1721

1725

1722

1726

# Parse config file for server-global settings

1723

1727

server_config = configparser.SafeConfigParser(server_defaults)

1724

1728

del server_defaults

1725

1729

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

1726

u"mandos.conf"))

1730

"mandos.conf"))

1727

1731

# Convert the SafeConfigParser object to a dict

1728

1732

server_settings = server_config.defaults()

1729

1733

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

1730

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

1731

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

1734

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

1735

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

1732

1736

option)

1733

1737

if server_settings["port"]:

1734

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

1735

u"port")

1738

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

1739

"port")

1736

1740

del server_config

1737

1741

1738

1742

# Override the settings from the config file with command line

1739

1743

# options, if set.

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"):

1744

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

1745

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

1746

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

1743

1747

value = getattr(options, option)

1744

1748

if value is not None:

1745

1749

server_settings[option] = value

1753

1757

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

1754

1758

1755

1759

# For convenience

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"]

1760

debug = server_settings["debug"]

1761

debuglevel = server_settings["debuglevel"]

1762

use_dbus = server_settings["use_dbus"]

1763

use_ipv6 = server_settings["use_ipv6"]

1760

1764

1761

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

1765

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

1762

1766

syslogger.setFormatter(logging.Formatter

1763

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

1764

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

1765

% server_settings[u"servicename"]))

1767

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

1768

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

1769

% server_settings["servicename"]))

1766

1770

1767

1771

# Parse config file with clients

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",

1772

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

1773

"interval": "5m",

1774

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

1775

"host": "",

1776

"approval_delay": "0s",

1777

"approval_duration": "1s",

1774

1778

}

1775

1779

client_config = configparser.SafeConfigParser(client_defaults)

1776

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

1777

u"clients.conf"))

1780

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

1781

"clients.conf"))

1778

1782

1779

1783

global mandos_dbus_service

1780

1784

mandos_dbus_service = None

1781

1785

1782

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

1783

server_settings[u"port"]),

1786

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

1787

server_settings["port"]),

1784

1788

ClientHandler,

1785

interface=(server_settings[u"interface"]

1789

interface=(server_settings["interface"]

1786

1790

or None),

1787

1791

use_ipv6=use_ipv6,

1788

1792

gnutls_priority=

1789

server_settings[u"priority"],

1793

server_settings["priority"],

1790

1794

use_dbus=use_dbus)

1791

1795

if not debug:

1792

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

1796

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

1793

1797

try:

1794

pidfile = open(pidfilename, u"w")

1798

pidfile = open(pidfilename, "w")

1795

1799

except IOError:

1796

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

1800

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

1797

1801

1798

1802

try:

1799

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

1800

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

1803

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

1804

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

1801

1805

except KeyError:

1802

1806

try:

1803

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

1804

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

1807

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

1808

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

1805

1809

except KeyError:

1806

1810

try:

1807

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

1808

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

1811

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

1812

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

1809

1813

except KeyError:

1810

1814

uid = 65534

1811

1815

gid = 65534

1833

1837

1834

1838

@gnutls.library.types.gnutls_log_func

1835

1839

def debug_gnutls(level, string):

1836

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

1840

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

1837

1841

1838

1842

(gnutls.library.functions

1839

1843

.gnutls_global_set_log_function(debug_gnutls))

1847

1851

# No console logging

1848

1852

logger.removeHandler(console)

1849

1853

1854

# Need to fork before connecting to D-Bus

1855

if not debug:

1856

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

1857

daemon()

1850

1858

1851

1859

global main_loop

1852

1860

# From the Avahi example code

1856

1864

# End of Avahi example code

1857

1865

if use_dbus:

1858

1866

try:

1859

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

1867

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

1860

1868

bus, do_not_queue=True)

1861

1869

except dbus.exceptions.NameExistsException, e:

1862

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

1870

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

1863

1871

use_dbus = False

1864

server_settings[u"use_dbus"] = False

1872

server_settings["use_dbus"] = False

1865

1873

tcp_server.use_dbus = False

1866

1874

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

1867

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

1868

servicetype = u"_mandos._tcp",

1875

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

1876

servicetype = "_mandos._tcp",

1869

1877

protocol = protocol, bus = bus)

1870

1878

if server_settings["interface"]:

1871

1879

service.interface = (if_nametoindex

1872

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

1873

1874

if not debug:

1875

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

1876

daemon()

1877

1880

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

1881

1878

1882

global multiprocessing_manager

1879

1883

multiprocessing_manager = multiprocessing.Manager()

1880

1884

1899

1903

client_config, section)))

1900

1904

for section in client_config.sections()))

1901

1905

if not tcp_server.clients:

1902

logger.warning(u"No clients defined")

1906

logger.warning("No clients defined")

1903

1907

1904

1908

if not debug:

1905

1909

try:

1906

1910

with pidfile:

1907

1911

pid = os.getpid()

1908

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

1912

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

1909

1913

del pidfile

1910

1914

except IOError:

1911

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

1915

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

1912

1916

pidfilename, pid)

1913

1917

except NameError:

1914

1918

# "pidfile" was never created

1924

1928

class MandosDBusService(dbus.service.Object):

1925

1929

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

1926

1930

def __init__(self):

1927

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

1928

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

1931

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

1932

_interface = "se.bsnet.fukt.Mandos"

1929

1933

1930

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

1934

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

1931

1935

def ClientAdded(self, objpath):

1932

1936

"D-Bus signal"

1933

1937

pass

1934

1938

1935

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

1939

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

1936

1940

def ClientNotFound(self, fingerprint, address):

1937

1941

"D-Bus signal"

1938

1942

pass

1939

1943

1940

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

1944

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

1941

1945

def ClientRemoved(self, objpath, name):

1942

1946

"D-Bus signal"

1943

1947

pass

1944

1948

1945

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

1949

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

1946

1950

def GetAllClients(self):

1947

1951

"D-Bus method"

1948

1952

return dbus.Array(c.dbus_object_path

1949

1953

for c in tcp_server.clients)

1950

1954

1951

1955

@dbus.service.method(_interface,

1952

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

1956

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

1953

1957

def GetAllClientsWithProperties(self):

1954

1958

"D-Bus method"

1955

1959

return dbus.Dictionary(

1956

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

1960

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

1957

1961

for c in tcp_server.clients),

1958

signature=u"oa{sv}")

1962

signature="oa{sv}")

1959

1963

1960

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

1964

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

1961

1965

def RemoveClient(self, object_path):

1962

1966

"D-Bus method"

1963

1967

for c in tcp_server.clients:

2005

2009

# Find out what port we got

2006

2010

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

2007

2011

if use_ipv6:

2008

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

2012

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

2009

2013

" flowinfo %d, scope_id %d"

2010

2014

% tcp_server.socket.getsockname())

2011

2015

else: # IPv4

2012

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

2016

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

2013

2017

% tcp_server.socket.getsockname())

2014

2018

2015

2019

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

2019

2023

try:

2020

2024

service.activate()

2021

2025

except dbus.exceptions.DBusException, error:

2022

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

2026

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

2023

2027

cleanup()

2024

2028

sys.exit(1)

2025

2029

# End of Avahi example code

2029

2033

(tcp_server.handle_request

2030

2034

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

2031

2035

2032

logger.debug(u"Starting main loop")

2036

logger.debug("Starting main loop")

2033

2037

main_loop.run()

2034

2038

except AvahiError, error:

2035

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

2039

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

2036

2040

cleanup()

2037

2041

sys.exit(1)

2038

2042

except KeyboardInterrupt:

2039

2043

if debug:

2040

print >> sys.stderr

2041

logger.debug(u"Server received KeyboardInterrupt")

2042

logger.debug(u"Server exiting")

2044

print("", file=sys.stderr)

2045

logger.debug("Server received KeyboardInterrupt")

2046

logger.debug("Server exiting")

2043

2047

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

2044

2048

cleanup()

2045

2049