/mandos/trunk : revision 609

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from __future__ import (division, absolute_import, print_function,

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unicode_literals)

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from future_builtins 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 types

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import binascii

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import tempfile

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import itertools

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import collections

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import dbus

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import dbus.service

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except ImportError:

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SO_BINDTODEVICE = None

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version = "1.5.3"

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version = "1.6.0"

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stored_state_file = "clients.pickle"

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logger = logging.getLogger()

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def __enter__(self):

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return self

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def __exit__ (self, exc_type, exc_value, traceback):

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def __exit__(self, exc_type, exc_value, traceback):

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self._cleanup()

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return False

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def encrypt(self, data, password):

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self.gnupg.passphrase = self.password_encode(password)

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with open(os.devnull) as devnull:

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with open(os.devnull, "w") as devnull:

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try:

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proc = self.gnupg.run(['--symmetric'],

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create_fhs=['stdin', 'stdout'],

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def decrypt(self, data, password):

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self.gnupg.passphrase = self.password_encode(password)

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with open(os.devnull) as devnull:

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with open(os.devnull, "w") as devnull:

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try:

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proc = self.gnupg.run(['--decrypt'],

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create_fhs=['stdin', 'stdout'],

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attach_fhs={'stderr': devnull})

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with contextlib.closing(proc.handles['stdin'] ) as f:

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with contextlib.closing(proc.handles['stdin']) as f:

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f.write(data)

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with contextlib.closing(proc.handles['stdout']) as f:

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decrypted_plaintext = f.read()

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return decrypted_plaintext

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class AvahiError(Exception):

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def __init__(self, value, *args, **kwargs):

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self.value = value

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server: D-Bus Server

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bus: dbus.SystemBus()

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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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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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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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logger.critical("D-Bus Exception", exc_info=error)

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self.cleanup()

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os._exit(1)

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self.rename_count += 1

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def remove(self):

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

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if self.entry_group_state_changed_match is not None:

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self.entry_group_state_changed_match = None

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if self.group is not None:

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self.group.Reset()

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def add(self):

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

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self.remove()

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dbus.UInt16(self.port),

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avahi.string_array_to_txt_array(self.TXT))

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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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elif state == avahi.ENTRY_GROUP_FAILURE:

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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("State changed: %s"

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% unicode(error))

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raise AvahiGroupError("State changed: {0!s}"

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.format(error))

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def cleanup(self):

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

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if self.group is not None:

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pass

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self.group = None

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self.remove()

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

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

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

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

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else:

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

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def activate(self):

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

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if self.server is None:

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self.server_state_changed)

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

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class AvahiServiceToSyslog(AvahiService):

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def rename(self):

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"""Add the new name to the syslog messages"""

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ret = AvahiService.rename(self)

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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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% self.name))

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('Mandos ({0}) [%(process)d]:'

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

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.format(self.name)))

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return ret

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def timedelta_to_milliseconds(td):

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"Convert a datetime.timedelta() to milliseconds"

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return ((td.days * 24 * 60 * 60 * 1000)

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+ (td.seconds * 1000)

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+ (td.microseconds // 1000))

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class Client(object):

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"""A representation of a client host served by this server.

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404

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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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"created", "enabled", "expires",

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"fingerprint", "host", "interval",

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"last_approval_request", "last_checked_ok",

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

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

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"extended_timeout": "15m",

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"interval": "2m",

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client_defaults = { "timeout": "PT5M",

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"extended_timeout": "PT15M",

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"interval": "PT2M",

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

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"host": "",

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"approval_delay": "0s",

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"approval_duration": "1s",

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"approval_delay": "PT0S",

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"approval_duration": "PT1S",

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"approved_by_default": "True",

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"enabled": "True",

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}

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def approval_delay_milliseconds(self):

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return timedelta_to_milliseconds(self.approval_delay)

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@staticmethod

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def config_parser(config):

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"""Construct a new dict of client settings of this form:

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"rb") as secfile:

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client["secret"] = secfile.read()

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else:

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

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% section)

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raise TypeError("No secret or secfile for section {0}"

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.format(section))

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client["timeout"] = string_to_delta(section["timeout"])

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client["extended_timeout"] = string_to_delta(

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section["extended_timeout"])

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client["last_checker_status"] = -2

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return settings

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def __init__(self, settings, name = None):

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"""Note: the 'checker' key in 'config' sets the

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'checker_command' attribute and *not* the 'checker'

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attribute."""

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self.name = name

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# adding all client settings

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for setting, value in settings.iteritems():

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else:

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self.last_enabled = None

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self.expires = None

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

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self.created = settings.get("created",

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datetime.datetime.utcnow())

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# attributes specific for this server instance

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self.checker = None

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self.checker_initiator_tag = None

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

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self.enabled = True

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self.last_enabled = datetime.datetime.utcnow()

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self.init_checker()

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self.send_changedstate()

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def disable(self, quiet=True):

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"""Disable this client."""

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if not getattr(self, "enabled", False):

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return False

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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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if getattr(self, "disable_initiator_tag", None) is not None:

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gobject.source_remove(self.disable_initiator_tag)

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self.disable_initiator_tag = None

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self.expires = None

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

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if getattr(self, "checker_initiator_tag", None) is not None:

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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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self.enabled = False

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if not quiet:

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self.send_changedstate()

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# Do not run this again if called by a gobject.timeout_add

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return False

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def init_checker(self):

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# Schedule a new checker to be started an 'interval' from now,

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# and every interval from then on.

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if self.checker_initiator_tag is not None:

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gobject.source_remove(self.checker_initiator_tag)

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self.checker_initiator_tag = (gobject.timeout_add

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(self.interval_milliseconds(),

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self.start_checker))

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

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if self.disable_initiator_tag is not None:

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gobject.source_remove(self.disable_initiator_tag)

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self.disable_initiator_tag = (gobject.timeout_add

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(self.timeout_milliseconds(),

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self.disable))

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timeout = self.timeout

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if self.disable_initiator_tag is not None:

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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, "enabled", False):

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self.disable_initiator_tag = (gobject.timeout_add

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(timedelta_to_milliseconds

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If a checker already exists, leave it running and do

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nothing."""

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# The reason for not killing a running checker is that if we

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# did that, then if a checker (for some reason) started

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# running slowly and taking more than 'interval' time, the

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# client would inevitably timeout, since no checker would get

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# a chance to run to completion. If we instead leave running

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# did that, and if a checker (for some reason) started running

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# slowly and taking more than 'interval' time, then the client

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# would inevitably timeout, since no checker would get a

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# chance to run to completion. If we instead leave running

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# checkers alone, the checker would have to take more time

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# than 'timeout' for the client to be disabled, which is as it

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# should be.

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self.current_checker_command)

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# Start a new checker if needed

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if self.checker is None:

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# Escape attributes for the shell

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escaped_attrs = dict(

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

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for attr in

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self.runtime_expansions)

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try:

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# In case checker_command has exactly one % operator

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command = self.checker_command % self.host

682

except TypeError:

683

# Escape attributes for the shell

684

escaped_attrs = dict(

685

(attr,

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

687

errors=

688

'replace')))

689

for attr in

690

self.runtime_expansions)

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try:

693

command = self.checker_command % escaped_attrs

694

except TypeError as error:

695

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

696

' %s', self.checker_command, error)

697

return True # Try again later

701

command = self.checker_command % escaped_attrs

702

except TypeError as error:

703

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

704

self.checker_command, exc_info=error)

705

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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self.checker = subprocess.Popen(command,

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close_fds=True,

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shell=True, cwd="/")

709

self.checker_callback_tag = (gobject.child_watch_add

710

(self.checker.pid,

711

self.checker_callback,

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data=command))

713

# The checker may have completed before the gobject

714

# watch was added. Check for this.

715

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

716

if pid:

717

gobject.source_remove(self.checker_callback_tag)

718

self.checker_callback(pid, status, command)

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717

except OSError as error:

720

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

721

error)

718

logger.error("Failed to start subprocess",

719

exc_info=error)

720

self.checker_callback_tag = (gobject.child_watch_add

721

(self.checker.pid,

722

self.checker_callback,

723

data=command))

724

# The checker may have completed before the gobject

725

# watch was added. Check for this.

726

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

727

if pid:

728

gobject.source_remove(self.checker_callback_tag)

729

self.checker_callback(pid, status, command)

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

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731

return True

724

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731

739

return

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

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741

try:

734

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

742

self.checker.terminate()

735

743

#time.sleep(0.5)

736

744

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

737

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

745

# self.checker.kill()

738

746

except OSError as error:

739

747

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

740

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raise

757

765

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

758

766

if byte_arrays and signature != "ay":

759

767

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

760

" signature %r" % signature)

768

" signature {0!r}".format(signature))

761

769

def decorator(func):

762

770

func._dbus_is_property = True

763

771

func._dbus_interface = dbus_interface

771

779

return decorator

772

780

773

781

782

def dbus_interface_annotations(dbus_interface):

783

"""Decorator for marking functions returning interface annotations

784

785

Usage:

786

787

@dbus_interface_annotations("org.example.Interface")

788

def _foo(self): # Function name does not matter

789

return {"org.freedesktop.DBus.Deprecated": "true",

790

"org.freedesktop.DBus.Property.EmitsChangedSignal":

791

"false"}

792

"""

793

def decorator(func):

794

func._dbus_is_interface = True

795

func._dbus_interface = dbus_interface

796

func._dbus_name = dbus_interface

797

return func

798

return decorator

799

800

801

def dbus_annotations(annotations):

802

"""Decorator to annotate D-Bus methods, signals or properties

803

Usage:

804

805

@dbus_service_property("org.example.Interface", signature="b",

806

access="r")

807

@dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",

808

"org.freedesktop.DBus.Property."

809

"EmitsChangedSignal": "false"})

810

def Property_dbus_property(self):

811

return dbus.Boolean(False)

812

"""

813

def decorator(func):

814

func._dbus_annotations = annotations

815

return func

816

return decorator

817

818

774

819

class DBusPropertyException(dbus.exceptions.DBusException):

775

820

"""A base class for D-Bus property-related exceptions

776

821

"""

799

844

"""

800

845

801

846

@staticmethod

802

def _is_dbus_property(obj):

803

return getattr(obj, "_dbus_is_property", False)

847

def _is_dbus_thing(thing):

848

"""Returns a function testing if an attribute is a D-Bus thing

849

850

If called like _is_dbus_thing("method") it returns a function

851

suitable for use as predicate to inspect.getmembers().

852

"""

853

return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),

854

False)

804

855

805

def _get_all_dbus_properties(self):

856

def _get_all_dbus_things(self, thing):

806

857

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

807

858

"""

808

return ((prop.__get__(self)._dbus_name, prop.__get__(self))

859

return ((getattr(athing.__get__(self), "_dbus_name",

860

name),

861

athing.__get__(self))

809

862

for cls in self.__class__.__mro__

810

for name, prop in

811

inspect.getmembers(cls, self._is_dbus_property))

863

for name, athing in

864

inspect.getmembers(cls,

865

self._is_dbus_thing(thing)))

812

866

813

867

def _get_dbus_property(self, interface_name, property_name):

814

868

"""Returns a bound method if one exists which is a D-Bus

816

870

"""

817

871

for cls in self.__class__.__mro__:

818

872

for name, value in (inspect.getmembers

819

(cls, self._is_dbus_property)):

873

(cls,

874

self._is_dbus_thing("property"))):

820

875

if (value._dbus_name == property_name

821

876

and value._dbus_interface == interface_name):

822

877

return value.__get__(self)

864

919

Note: Will not include properties with access="write".

865

920

"""

866

921

properties = {}

867

for name, prop in self._get_all_dbus_properties():

922

for name, prop in self._get_all_dbus_things("property"):

868

923

if (interface_name

869

924

and interface_name != prop._dbus_interface):

870

925

# Interface non-empty but did not match

885

940

path_keyword='object_path',

886

941

connection_keyword='connection')

887

942

def Introspect(self, object_path, connection):

888

"""Standard D-Bus method, overloaded to insert property tags.

943

"""Overloading of standard D-Bus method.

944

945

Inserts property tags and interface annotation tags.

889

946

"""

890

947

xmlstring = dbus.service.Object.Introspect(self, object_path,

891

948

connection)

898

955

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

899

956

return e

900

957

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

958

# Add property tags

901

959

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

902

960

for name, prop

903

in self._get_all_dbus_properties()

961

in self._get_all_dbus_things("property")

904

962

if prop._dbus_interface

905

963

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

906

964

if_tag.appendChild(tag)

965

# Add annotation tags

966

for typ in ("method", "signal", "property"):

967

for tag in if_tag.getElementsByTagName(typ):

968

annots = dict()

969

for name, prop in (self.

970

_get_all_dbus_things(typ)):

971

if (name == tag.getAttribute("name")

972

and prop._dbus_interface

973

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

974

annots.update(getattr

975

(prop,

976

"_dbus_annotations",

977

{}))

978

for name, value in annots.iteritems():

979

ann_tag = document.createElement(

980

"annotation")

981

ann_tag.setAttribute("name", name)

982

ann_tag.setAttribute("value", value)

983

tag.appendChild(ann_tag)

984

# Add interface annotation tags

985

for annotation, value in dict(

986

itertools.chain.from_iterable(

987

annotations().iteritems()

988

for name, annotations in

989

self._get_all_dbus_things("interface")

990

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

991

)).iteritems():

992

ann_tag = document.createElement("annotation")

993

ann_tag.setAttribute("name", annotation)

994

ann_tag.setAttribute("value", value)

995

if_tag.appendChild(ann_tag)

907

996

# Add the names to the return values for the

908

997

# "org.freedesktop.DBus.Properties" methods

909

998

if (if_tag.getAttribute("name")

924

1013

except (AttributeError, xml.dom.DOMException,

925

1014

xml.parsers.expat.ExpatError) as error:

926

1015

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

927

error)

1016

exc_info=error)

928

1017

return xmlstring

929

1018

930

1019

931

def datetime_to_dbus (dt, variant_level=0):

1020

def datetime_to_dbus(dt, variant_level=0):

932

1021

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

933

1022

if dt is None:

934

1023

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

936

1025

variant_level=variant_level)

937

1026

938

1027

939

class AlternateDBusNamesMetaclass(DBusObjectWithProperties

940

.__metaclass__):

941

"""Applied to an empty subclass of a D-Bus object, this metaclass

942

will add additional D-Bus attributes matching a certain pattern.

1028

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1029

"""A class decorator; applied to a subclass of

1030

dbus.service.Object, it will add alternate D-Bus attributes with

1031

interface names according to the "alt_interface_names" mapping.

1032

Usage:

1033

1034

@alternate_dbus_interfaces({"org.example.Interface":

1035

"net.example.AlternateInterface"})

1036

class SampleDBusObject(dbus.service.Object):

1037

@dbus.service.method("org.example.Interface")

1038

def SampleDBusMethod():

1039

pass

1040

1041

The above "SampleDBusMethod" on "SampleDBusObject" will be

1042

reachable via two interfaces: "org.example.Interface" and

1043

"net.example.AlternateInterface", the latter of which will have

1044

its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to

1045

"true", unless "deprecate" is passed with a False value.

1046

1047

This works for methods and signals, and also for D-Bus properties

1048

(from DBusObjectWithProperties) and interfaces (from the

1049

dbus_interface_annotations decorator).

943

1050

"""

944

def __new__(mcs, name, bases, attr):

945

# Go through all the base classes which could have D-Bus

946

# methods, signals, or properties in them

947

for base in (b for b in bases

948

if issubclass(b, dbus.service.Object)):

949

# Go though all attributes of the base class

950

for attrname, attribute in inspect.getmembers(base):

1051

def wrapper(cls):

1052

for orig_interface_name, alt_interface_name in (

1053

alt_interface_names.iteritems()):

1054

attr = {}

1055

interface_names = set()

1056

# Go though all attributes of the class

1057

for attrname, attribute in inspect.getmembers(cls):

951

1058

# Ignore non-D-Bus attributes, and D-Bus attributes

952

1059

# with the wrong interface name

953

1060

if (not hasattr(attribute, "_dbus_interface")

954

1061

or not attribute._dbus_interface

955

.startswith("se.recompile.Mandos")):

1062

.startswith(orig_interface_name)):

956

1063

continue

957

1064

# Create an alternate D-Bus interface name based on

958

1065

# the current name

959

1066

alt_interface = (attribute._dbus_interface

960

.replace("se.recompile.Mandos",

961

"se.bsnet.fukt.Mandos"))

1067

.replace(orig_interface_name,

1068

alt_interface_name))

1069

interface_names.add(alt_interface)

962

1070

# Is this a D-Bus signal?

963

1071

if getattr(attribute, "_dbus_is_signal", False):

964

1072

# Extract the original non-method function by

979

1087

nonmethod_func.func_name,

980

1088

nonmethod_func.func_defaults,

981

1089

nonmethod_func.func_closure)))

1090

# Copy annotations, if any

1091

try:

1092

new_function._dbus_annotations = (

1093

dict(attribute._dbus_annotations))

1094

except AttributeError:

1095

pass

982

1096

# Define a creator of a function to call both the

983

# old and new functions, so both the old and new

984

# signals gets sent when the function is called

1097

# original and alternate functions, so both the

1098

# original and alternate signals gets sent when

1099

# the function is called

985

1100

def fixscope(func1, func2):

986

1101

"""This function is a scope container to pass

987

1102

func1 and func2 to the "call_both" function

994

1109

return call_both

995

1110

# Create the "call_both" function and add it to

996

1111

# the class

997

attr[attrname] = fixscope(attribute,

998

new_function)

1112

attr[attrname] = fixscope(attribute, new_function)

999

1113

# Is this a D-Bus method?

1000

1114

elif getattr(attribute, "_dbus_is_method", False):

1001

1115

# Create a new, but exactly alike, function

1012

1126

attribute.func_name,

1013

1127

attribute.func_defaults,

1014

1128

attribute.func_closure)))

1129

# Copy annotations, if any

1130

try:

1131

attr[attrname]._dbus_annotations = (

1132

dict(attribute._dbus_annotations))

1133

except AttributeError:

1134

pass

1015

1135

# Is this a D-Bus property?

1016

1136

elif getattr(attribute, "_dbus_is_property", False):

1017

1137

# Create a new, but exactly alike, function

1031

1151

attribute.func_name,

1032

1152

attribute.func_defaults,

1033

1153

attribute.func_closure)))

1034

return type.__new__(mcs, name, bases, attr)

1035

1036

1154

# Copy annotations, if any

1155

try:

1156

attr[attrname]._dbus_annotations = (

1157

dict(attribute._dbus_annotations))

1158

except AttributeError:

1159

pass

1160

# Is this a D-Bus interface?

1161

elif getattr(attribute, "_dbus_is_interface", False):

1162

# Create a new, but exactly alike, function

1163

# object. Decorate it to be a new D-Bus interface

1164

# with the alternate D-Bus interface name. Add it

1165

# to the class.

1166

attr[attrname] = (dbus_interface_annotations

1167

(alt_interface)

1168

(types.FunctionType

1169

(attribute.func_code,

1170

attribute.func_globals,

1171

attribute.func_name,

1172

attribute.func_defaults,

1173

attribute.func_closure)))

1174

if deprecate:

1175

# Deprecate all alternate interfaces

1176

iname="_AlternateDBusNames_interface_annotation{0}"

1177

for interface_name in interface_names:

1178

@dbus_interface_annotations(interface_name)

1179

def func(self):

1180

return { "org.freedesktop.DBus.Deprecated":

1181

"true" }

1182

# Find an unused name

1183

for aname in (iname.format(i)

1184

for i in itertools.count()):

1185

if aname not in attr:

1186

attr[aname] = func

1187

break

1188

if interface_names:

1189

# Replace the class with a new subclass of it with

1190

# methods, signals, etc. as created above.

1191

cls = type(b"{0}Alternate".format(cls.__name__),

1192

(cls,), attr)

1193

return cls

1194

return wrapper

1195

1196

1197

@alternate_dbus_interfaces({"se.recompile.Mandos":

1198

"se.bsnet.fukt.Mandos"})

1037

1199

class ClientDBus(Client, DBusObjectWithProperties):

1038

1200

"""A Client class using D-Bus

1039

1201

1059

1221

("/clients/" + client_object_name))

1060

1222

DBusObjectWithProperties.__init__(self, self.bus,

1061

1223

self.dbus_object_path)

1062

1224

1063

1225

def notifychangeproperty(transform_func,

1064

1226

dbus_name, type_func=lambda x: x,

1065

1227

variant_level=1):

1088

1250

1089

1251

return property(lambda self: getattr(self, attrname), setter)

1090

1252

1091

1092

1253

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1093

1254

approvals_pending = notifychangeproperty(dbus.Boolean,

1094

1255

"ApprovalPending",

1176

1337

return False

1177

1338

1178

1339

def approve(self, value=True):

1179

self.send_changedstate()

1180

1340

self.approved = value

1181

1341

gobject.timeout_add(timedelta_to_milliseconds

1182

1342

(self.approval_duration),

1183

1343

self._reset_approved)

1184

1344

self.send_changedstate()

1185

1345

1186

1346

## D-Bus methods, signals & properties

1187

1347

_interface = "se.recompile.Mandos.Client"

1188

1348

1349

## Interfaces

1350

1351

@dbus_interface_annotations(_interface)

1352

def _foo(self):

1353

return { "org.freedesktop.DBus.Property.EmitsChangedSignal":

1354

"false"}

1355

1189

1356

## Signals

1190

1357

1191

1358

# CheckerCompleted - signal

1364

1531

def Timeout_dbus_property(self, value=None):

1365

1532

if value is None: # get

1366

1533

return dbus.UInt64(self.timeout_milliseconds())

1534

old_timeout = self.timeout

1367

1535

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

1368

# Reschedule timeout

1536

# Reschedule disabling

1369

1537

if self.enabled:

1370

1538

now = datetime.datetime.utcnow()

1371

time_to_die = timedelta_to_milliseconds(

1372

(self.last_checked_ok + self.timeout) - now)

1373

if time_to_die <= 0:

1539

self.expires += self.timeout - old_timeout

1540

if self.expires <= now:

1374

1541

# The timeout has passed

1375

1542

self.disable()

1376

1543

else:

1377

self.expires = (now +

1378

datetime.timedelta(milliseconds =

1379

time_to_die))

1380

1544

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

1381

1545

is None):

1382

1546

return

1383

1547

gobject.source_remove(self.disable_initiator_tag)

1384

self.disable_initiator_tag = (gobject.timeout_add

1385

(time_to_die,

1386

self.disable))

1548

self.disable_initiator_tag = (

1549

gobject.timeout_add(

1550

timedelta_to_milliseconds(self.expires - now),

1551

self.disable))

1387

1552

1388

1553

# ExtendedTimeout - property

1389

1554

@dbus_service_property(_interface, signature="t",

1468

1633

self._pipe.send(('setattr', name, value))

1469

1634

1470

1635

1471

class ClientDBusTransitional(ClientDBus):

1472

__metaclass__ = AlternateDBusNamesMetaclass

1473

1474

1475

1636

class ClientHandler(socketserver.BaseRequestHandler, object):

1476

1637

"""A class to handle client connections.

1477

1638

1581

1742

#wait until timeout or approved

1582

1743

time = datetime.datetime.now()

1583

1744

client.changedstate.acquire()

1584

(client.changedstate.wait

1585

(float(client.timedelta_to_milliseconds(delay)

1586

/ 1000)))

1745

client.changedstate.wait(

1746

float(timedelta_to_milliseconds(delay)

1747

/ 1000))

1587

1748

client.changedstate.release()

1588

1749

time2 = datetime.datetime.now()

1589

1750

if (time2 - time) >= delay:

1605

1766

try:

1606

1767

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

1607

1768

except gnutls.errors.GNUTLSError as error:

1608

logger.warning("gnutls send failed")

1769

logger.warning("gnutls send failed",

1770

exc_info=error)

1609

1771

return

1610

1772

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

1611

1773

sent, len(client.secret)

1625

1787

try:

1626

1788

session.bye()

1627

1789

except gnutls.errors.GNUTLSError as error:

1628

logger.warning("GnuTLS bye failed")

1790

logger.warning("GnuTLS bye failed",

1791

exc_info=error)

1629

1792

1630

1793

@staticmethod

1631

1794

def peer_certificate(session):

1703

1866

def process_request(self, request, address):

1704

1867

"""Start a new process to process the request."""

1705

1868

proc = multiprocessing.Process(target = self.sub_process_main,

1706

args = (request,

1707

address))

1869

args = (request, address))

1708

1870

proc.start()

1709

1871

return proc

1710

1872

1738

1900

use_ipv6: Boolean; to use IPv6 or not

1739

1901

"""

1740

1902

def __init__(self, server_address, RequestHandlerClass,

1741

interface=None, use_ipv6=True):

1903

interface=None, use_ipv6=True, socketfd=None):

1904

"""If socketfd is set, use that file descriptor instead of

1905

creating a new one with socket.socket().

1906

"""

1742

1907

self.interface = interface

1743

1908

if use_ipv6:

1744

1909

self.address_family = socket.AF_INET6

1910

if socketfd is not None:

1911

# Save the file descriptor

1912

self.socketfd = socketfd

1913

# Save the original socket.socket() function

1914

self.socket_socket = socket.socket

1915

# To implement --socket, we monkey patch socket.socket.

1916

#

1917

# (When socketserver.TCPServer is a new-style class, we

1918

# could make self.socket into a property instead of monkey

1919

# patching socket.socket.)

1920

#

1921

# Create a one-time-only replacement for socket.socket()

1922

@functools.wraps(socket.socket)

1923

def socket_wrapper(*args, **kwargs):

1924

# Restore original function so subsequent calls are

1925

# not affected.

1926

socket.socket = self.socket_socket

1927

del self.socket_socket

1928

# This time only, return a new socket object from the

1929

# saved file descriptor.

1930

return socket.fromfd(self.socketfd, *args, **kwargs)

1931

# Replace socket.socket() function with wrapper

1932

socket.socket = socket_wrapper

1933

# The socketserver.TCPServer.__init__ will call

1934

# socket.socket(), which might be our replacement,

1935

# socket_wrapper(), if socketfd was set.

1745

1936

socketserver.TCPServer.__init__(self, server_address,

1746

1937

RequestHandlerClass)

1938

1747

1939

def server_bind(self):

1748

1940

"""This overrides the normal server_bind() function

1749

1941

to bind to an interface if one was specified, and also NOT to

1757

1949

try:

1758

1950

self.socket.setsockopt(socket.SOL_SOCKET,

1759

1951

SO_BINDTODEVICE,

1760

str(self.interface

1761

+ '\0'))

1952

str(self.interface + '\0'))

1762

1953

except socket.error as error:

1763

if error[0] == errno.EPERM:

1764

logger.error("No permission to"

1765

" bind to interface %s",

1766

self.interface)

1767

elif error[0] == errno.ENOPROTOOPT:

1954

if error.errno == errno.EPERM:

1955

logger.error("No permission to bind to"

1956

" interface %s", self.interface)

1957

elif error.errno == errno.ENOPROTOOPT:

1768

1958

logger.error("SO_BINDTODEVICE not available;"

1769

1959

" cannot bind to interface %s",

1770

1960

self.interface)

1961

elif error.errno == errno.ENODEV:

1962

logger.error("Interface %s does not exist,"

1963

" cannot bind", self.interface)

1771

1964

else:

1772

1965

raise

1773

1966

# Only bind(2) the socket if we really need to.

1803

1996

"""

1804

1997

def __init__(self, server_address, RequestHandlerClass,

1805

1998

interface=None, use_ipv6=True, clients=None,

1806

gnutls_priority=None, use_dbus=True):

1999

gnutls_priority=None, use_dbus=True, socketfd=None):

1807

2000

self.enabled = False

1808

2001

self.clients = clients

1809

2002

if self.clients is None:

1813

2006

IPv6_TCPServer.__init__(self, server_address,

1814

2007

RequestHandlerClass,

1815

2008

interface = interface,

1816

use_ipv6 = use_ipv6)

2009

use_ipv6 = use_ipv6,

2010

socketfd = socketfd)

1817

2011

def server_activate(self):

1818

2012

if self.enabled:

1819

2013

return socketserver.TCPServer.server_activate(self)

1832

2026

1833

2027

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

1834

2028

proc = None, client_object=None):

1835

condition_names = {

1836

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

1837

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

1838

# blocking).

1839

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

1840

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

1841

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

1842

# broken, usually for pipes and

1843

# sockets).

1844

}

1845

conditions_string = ' | '.join(name

1846

for cond, name in

1847

condition_names.iteritems()

1848

if cond & condition)

1849

2029

# error, or the other end of multiprocessing.Pipe has closed

1850

if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):

2030

if condition & (gobject.IO_ERR | gobject.IO_HUP):

1851

2031

# Wait for other process to exit

1852

2032

proc.join()

1853

2033

return False

1911

2091

return True

1912

2092

1913

2093

2094

def rfc3339_duration_to_delta(duration):

2095

"""Parse an RFC 3339 "duration" and return a datetime.timedelta

2096

2097

>>> rfc3339_duration_to_delta("P7D")

2098

datetime.timedelta(7)

2099

>>> rfc3339_duration_to_delta("PT60S")

2100

datetime.timedelta(0, 60)

2101

>>> rfc3339_duration_to_delta("PT60M")

2102

datetime.timedelta(0, 3600)

2103

>>> rfc3339_duration_to_delta("PT24H")

2104

datetime.timedelta(1)

2105

>>> rfc3339_duration_to_delta("P1W")

2106

datetime.timedelta(7)

2107

>>> rfc3339_duration_to_delta("PT5M30S")

2108

datetime.timedelta(0, 330)

2109

>>> rfc3339_duration_to_delta("P1DT3M20S")

2110

datetime.timedelta(1, 200)

2111

"""

2112

2113

# Parsing an RFC 3339 duration with regular expressions is not

2114

# possible - there would have to be multiple places for the same

2115

# values, like seconds. The current code, while more esoteric, is

2116

# cleaner without depending on a parsing library. If Python had a

2117

# built-in library for parsing we would use it, but we'd like to

2118

# avoid excessive use of external libraries.

2119

2120

# New type for defining tokens, syntax, and semantics all-in-one

2121

Token = collections.namedtuple("Token",

2122

("regexp", # To match token; if

2123

# "value" is not None,

2124

# must have a "group"

2125

# containing digits

2126

"value", # datetime.timedelta or

2127

# None

2128

"followers")) # Tokens valid after

2129

# this token

2130

# RFC 3339 "duration" tokens, syntax, and semantics; taken from

2131

# the "duration" ABNF definition in RFC 3339, Appendix A.

2132

token_end = Token(re.compile(r"$"), None, frozenset())

2133

token_second = Token(re.compile(r"(\d+)S"),

2134

datetime.timedelta(seconds=1),

2135

frozenset((token_end,)))

2136

token_minute = Token(re.compile(r"(\d+)M"),

2137

datetime.timedelta(minutes=1),

2138

frozenset((token_second, token_end)))

2139

token_hour = Token(re.compile(r"(\d+)H"),

2140

datetime.timedelta(hours=1),

2141

frozenset((token_minute, token_end)))

2142

token_time = Token(re.compile(r"T"),

2143

None,

2144

frozenset((token_hour, token_minute,

2145

token_second)))

2146

token_day = Token(re.compile(r"(\d+)D"),

2147

datetime.timedelta(days=1),

2148

frozenset((token_time, token_end)))

2149

token_month = Token(re.compile(r"(\d+)M"),

2150

datetime.timedelta(weeks=4),

2151

frozenset((token_day, token_end)))

2152

token_year = Token(re.compile(r"(\d+)Y"),

2153

datetime.timedelta(weeks=52),

2154

frozenset((token_month, token_end)))

2155

token_week = Token(re.compile(r"(\d+)W"),

2156

datetime.timedelta(weeks=1),

2157

frozenset((token_end,)))

2158

token_duration = Token(re.compile(r"P"), None,

2159

frozenset((token_year, token_month,

2160

token_day, token_time,

2161

token_week))),

2162

# Define starting values

2163

value = datetime.timedelta() # Value so far

2164

found_token = None

2165

followers = frozenset(token_duration,) # Following valid tokens

2166

s = duration # String left to parse

2167

# Loop until end token is found

2168

while found_token is not token_end:

2169

# Search for any currently valid tokens

2170

for token in followers:

2171

match = token.regexp.match(s)

2172

if match is not None:

2173

# Token found

2174

if token.value is not None:

2175

# Value found, parse digits

2176

factor = int(match.group(1), 10)

2177

# Add to value so far

2178

value += factor * token.value

2179

# Strip token from string

2180

s = token.regexp.sub("", s, 1)

2181

# Go to found token

2182

found_token = token

2183

# Set valid next tokens

2184

followers = found_token.followers

2185

break

2186

else:

2187

# No currently valid tokens were found

2188

raise ValueError("Invalid RFC 3339 duration")

2189

# End token found

2190

return value

2191

2192

1914

2193

def string_to_delta(interval):

1915

2194

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

1916

2195

1927

2206

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

1928

2207

datetime.timedelta(0, 330)

1929

2208

"""

2209

2210

try:

2211

return rfc3339_duration_to_delta(interval)

2212

except ValueError:

2213

pass

2214

1930

2215

timevalue = datetime.timedelta(0)

1931

2216

for s in interval.split():

1932

2217

try:

1943

2228

elif suffix == "w":

1944

2229

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

1945

2230

else:

1946

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

2231

raise ValueError("Unknown suffix {0!r}"

2232

.format(suffix))

1947

2233

except (ValueError, IndexError) as e:

1948

2234

raise ValueError(*(e.args))

1949

2235

timevalue += delta

1963

2249

sys.exit()

1964

2250

if not noclose:

1965

2251

# Close all standard open file descriptors

1966

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

2252

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

1967

2253

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

1968

2254

raise OSError(errno.ENODEV,

1969

"%s not a character device"

1970

% os.path.devnull)

2255

"{0} not a character device"

2256

.format(os.devnull))

1971

2257

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

1972

2258

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

1973

2259

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

1982

2268

1983

2269

parser = argparse.ArgumentParser()

1984

2270

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

1985

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

2271

version = "%(prog)s {0}".format(version),

1986

2272

help="show version number and exit")

1987

2273

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

1988

2274

help="Bind to interface IF")

2013

2299

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

2014

2300

dest="restore", help="Do not restore stored"

2015

2301

" state")

2302

parser.add_argument("--socket", type=int,

2303

help="Specify a file descriptor to a network"

2304

" socket to use instead of creating one")

2016

2305

parser.add_argument("--statedir", metavar="DIR",

2017

2306

help="Directory to save/restore state in")

2307

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

2308

help="Run in foreground")

2018

2309

2019

2310

options = parser.parse_args()

2020

2311

2035

2326

"use_ipv6": "True",

2036

2327

"debuglevel": "",

2037

2328

"restore": "True",

2038

"statedir": "/var/lib/mandos"

2329

"socket": "",

2330

"statedir": "/var/lib/mandos",

2331

"foreground": "False",

2039

2332

}

2040

2333

2041

2334

# Parse config file for server-global settings

2046

2339

# Convert the SafeConfigParser object to a dict

2047

2340

server_settings = server_config.defaults()

2048

2341

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

2049

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

2342

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

2050

2343

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

2051

2344

option)

2052

2345

if server_settings["port"]:

2053

2346

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

2054

2347

"port")

2348

if server_settings["socket"]:

2349

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

2350

"socket")

2351

# Later, stdin will, and stdout and stderr might, be dup'ed

2352

# over with an opened os.devnull. But we don't want this to

2353

# happen with a supplied network socket.

2354

if 0 <= server_settings["socket"] <= 2:

2355

server_settings["socket"] = os.dup(server_settings

2356

["socket"])

2055

2357

del server_config

2056

2358

2057

2359

# Override the settings from the config file with command line

2059

2361

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

2060

2362

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

2061

2363

"use_dbus", "use_ipv6", "debuglevel", "restore",

2062

"statedir"):

2364

"statedir", "socket", "foreground"):

2063

2365

value = getattr(options, option)

2064

2366

if value is not None:

2065

2367

server_settings[option] = value

2068

2370

for option in server_settings.keys():

2069

2371

if type(server_settings[option]) is str:

2070

2372

server_settings[option] = unicode(server_settings[option])

2373

# Debug implies foreground

2374

if server_settings["debug"]:

2375

server_settings["foreground"] = True

2071

2376

# Now we have our good server settings in "server_settings"

2072

2377

2073

2378

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

2079

2384

use_ipv6 = server_settings["use_ipv6"]

2080

2385

stored_state_path = os.path.join(server_settings["statedir"],

2081

2386

stored_state_file)

2387

foreground = server_settings["foreground"]

2082

2388

2083

2389

if debug:

2084

2390

initlogger(debug, logging.DEBUG)

2091

2397

2092

2398

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

2093

2399

syslogger.setFormatter(logging.Formatter

2094

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

2095

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

2096

% server_settings["servicename"]))

2400

('Mandos ({0}) [%(process)d]:'

2401

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

2402

.format(server_settings

2403

["servicename"])))

2097

2404

2098

2405

# Parse config file with clients

2099

2406

client_config = configparser.SafeConfigParser(Client

2112

2419

use_ipv6=use_ipv6,

2113

2420

gnutls_priority=

2114

2421

server_settings["priority"],

2115

use_dbus=use_dbus)

2116

if not debug:

2422

use_dbus=use_dbus,

2423

socketfd=(server_settings["socket"]

2424

or None))

2425

if not foreground:

2117

2426

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

2427

pidfile = None

2118

2428

try:

2119

2429

pidfile = open(pidfilename, "w")

2120

except IOError:

2121

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

2430

except IOError as e:

2431

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

2432

exc_info=e)

2122

2433

2123

try:

2124

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

2125

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

2126

except KeyError:

2434

for name in ("_mandos", "mandos", "nobody"):

2127

2435

try:

2128

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

2129

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

2436

uid = pwd.getpwnam(name).pw_uid

2437

gid = pwd.getpwnam(name).pw_gid

2438

break

2130

2439

except KeyError:

2131

try:

2132

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

2133

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

2134

except KeyError:

2135

uid = 65534

2136

gid = 65534

2440

continue

2441

else:

2442

uid = 65534

2443

gid = 65534

2137

2444

try:

2138

2445

os.setgid(gid)

2139

2446

os.setuid(uid)

2140

2447

except OSError as error:

2141

if error[0] != errno.EPERM:

2448

if error.errno != errno.EPERM:

2142

2449

raise error

2143

2450

2144

2451

if debug:

2156

2463

.gnutls_global_set_log_function(debug_gnutls))

2157

2464

2158

2465

# Redirect stdin so all checkers get /dev/null

2159

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

2466

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

2160

2467

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

2161

2468

if null > 2:

2162

2469

os.close(null)

2163

2470

2164

2471

# Need to fork before connecting to D-Bus

2165

if not debug:

2472

if not foreground:

2166

2473

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

2167

2474

daemon()

2168

2475

2476

# multiprocessing will use threads, so before we use gobject we

2477

# need to inform gobject that threads will be used.

2169

2478

gobject.threads_init()

2170

2479

2171

2480

global main_loop

2172

2481

# From the Avahi example code

2173

DBusGMainLoop(set_as_default=True )

2482

DBusGMainLoop(set_as_default=True)

2174

2483

main_loop = gobject.MainLoop()

2175

2484

bus = dbus.SystemBus()

2176

2485

# End of Avahi example code

2182

2491

("se.bsnet.fukt.Mandos", bus,

2183

2492

do_not_queue=True))

2184

2493

except dbus.exceptions.NameExistsException as e:

2185

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

2494

logger.error("Disabling D-Bus:", exc_info=e)

2186

2495

use_dbus = False

2187

2496

server_settings["use_dbus"] = False

2188

2497

tcp_server.use_dbus = False

2200

2509

2201

2510

client_class = Client

2202

2511

if use_dbus:

2203

client_class = functools.partial(ClientDBusTransitional,

2204

bus = bus)

2512

client_class = functools.partial(ClientDBus, bus = bus)

2205

2513

2206

2514

client_settings = Client.config_parser(client_config)

2207

2515

old_client_settings = {}

2215

2523

(stored_state))

2216

2524

os.remove(stored_state_path)

2217

2525

except IOError as e:

2218

logger.warning("Could not load persistent state: {0}"

2219

.format(e))

2220

if e.errno != errno.ENOENT:

2526

if e.errno == errno.ENOENT:

2527

logger.warning("Could not load persistent state: {0}"

2528

.format(os.strerror(e.errno)))

2529

else:

2530

logger.critical("Could not load persistent state:",

2531

exc_info=e)

2221

2532

raise

2222

2533

except EOFError as e:

2223

2534

logger.warning("Could not load persistent state: "

2224

"EOFError: {0}".format(e))

2535

"EOFError:", exc_info=e)

2225

2536

2226

2537

with PGPEngine() as pgp:

2227

2538

for client_name, client in clients_data.iteritems():

2280

2591

.format(client_name))

2281

2592

client["secret"] = (

2282

2593

client_settings[client_name]["secret"])

2283

2284

2594

2285

2595

# Add/remove clients based on new changes made to config

2286

2596

for client_name in (set(old_client_settings)

2289

2599

for client_name in (set(client_settings)

2290

2600

- set(old_client_settings)):

2291

2601

clients_data[client_name] = client_settings[client_name]

2292

2602

2293

2603

# Create all client objects

2294

2604

for client_name, client in clients_data.iteritems():

2295

2605

tcp_server.clients[client_name] = client_class(

2297

2607

2298

2608

if not tcp_server.clients:

2299

2609

logger.warning("No clients defined")

2300

2301

if not debug:

2302

try:

2303

with pidfile:

2304

pid = os.getpid()

2305

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

2306

del pidfile

2307

except IOError:

2308

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

2309

pidfilename, pid)

2310

except NameError:

2311

# "pidfile" was never created

2312

pass

2610

2611

if not foreground:

2612

if pidfile is not None:

2613

try:

2614

with pidfile:

2615

pid = os.getpid()

2616

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

2617

except IOError:

2618

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

2619

pidfilename, pid)

2620

del pidfile

2313

2621

del pidfilename

2314

signal.signal(signal.SIGINT, signal.SIG_IGN)

2315

2622

2316

2623

signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())

2317

2624

signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())

2318

2625

2319

2626

if use_dbus:

2320

class MandosDBusService(dbus.service.Object):

2627

@alternate_dbus_interfaces({"se.recompile.Mandos":

2628

"se.bsnet.fukt.Mandos"})

2629

class MandosDBusService(DBusObjectWithProperties):

2321

2630

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

2322

2631

def __init__(self):

2323

2632

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

2324

2633

_interface = "se.recompile.Mandos"

2325

2634

2635

@dbus_interface_annotations(_interface)

2636

def _foo(self):

2637

return { "org.freedesktop.DBus.Property"

2638

".EmitsChangedSignal":

2639

"false"}

2640

2326

2641

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

2327

2642

def ClientAdded(self, objpath):

2328

2643

"D-Bus signal"

2370

2685

2371

2686

del _interface

2372

2687

2373

class MandosDBusServiceTransitional(MandosDBusService):

2374

__metaclass__ = AlternateDBusNamesMetaclass

2375

mandos_dbus_service = MandosDBusServiceTransitional()

2688

mandos_dbus_service = MandosDBusService()

2376

2689

2377

2690

def cleanup():

2378

2691

"Cleanup function; run on exit"

2411

2724

del client_settings[client.name]["secret"]

2412

2725

2413

2726

try:

2414

tempfd, tempname = tempfile.mkstemp(suffix=".pickle",

2415

prefix="clients-",

2416

dir=os.path.dirname

2417

(stored_state_path))

2418

with os.fdopen(tempfd, "wb") as stored_state:

2727

with (tempfile.NamedTemporaryFile

2728

(mode='wb', suffix=".pickle", prefix='clients-',

2729

dir=os.path.dirname(stored_state_path),

2730

delete=False)) as stored_state:

2419

2731

pickle.dump((clients, client_settings), stored_state)

2732

tempname=stored_state.name

2420

2733

os.rename(tempname, stored_state_path)

2421

2734

except (IOError, OSError) as e:

2422

logger.warning("Could not save persistent state: {0}"

2423

.format(e))

2424

2735

if not debug:

2425

2736

try:

2426

2737

os.remove(tempname)

2427

2738

except NameError:

2428

2739

pass

2429

if e.errno not in set((errno.ENOENT, errno.EACCES,

2430

errno.EEXIST)):

2740

if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):

2741

logger.warning("Could not save persistent state: {0}"

2742

.format(os.strerror(e.errno)))

2743

else:

2744

logger.warning("Could not save persistent state:",

2745

exc_info=e)

2431

2746

raise e

2432

2747

2433

2748

# Delete all clients, and settings from config

2461

2776

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

2462

2777

if use_ipv6:

2463

2778

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

2464

" flowinfo %d, scope_id %d"

2465

% tcp_server.socket.getsockname())

2779

" flowinfo %d, scope_id %d",

2780

*tcp_server.socket.getsockname())

2466

2781

else: # IPv4

2467

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

2468

% tcp_server.socket.getsockname())

2782

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

2783

*tcp_server.socket.getsockname())

2469

2784

2470

2785

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

2471

2786

2474

2789

try:

2475

2790

service.activate()

2476

2791

except dbus.exceptions.DBusException as error:

2477

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

2792

logger.critical("D-Bus Exception", exc_info=error)

2478

2793

cleanup()

2479

2794

sys.exit(1)

2480

2795

# End of Avahi example code

2487

2802

logger.debug("Starting main loop")

2488

2803

main_loop.run()

2489

2804

except AvahiError as error:

2490

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

2805

logger.critical("Avahi Error", exc_info=error)

2491

2806

cleanup()

2492

2807

sys.exit(1)

2493

2808

except KeyboardInterrupt: