/mandos/release : revision 237.7.154

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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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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 cPickle as pickle

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import multiprocessing

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import types

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import hashlib

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import binascii

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import tempfile

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import itertools

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import dbus

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import dbus.service

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import ctypes.util

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import xml.dom.minidom

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import inspect

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import Crypto.Cipher.AES

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import GnuPGInterface

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try:

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SO_BINDTODEVICE = socket.SO_BINDTODEVICE

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except ImportError:

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SO_BINDTODEVICE = None

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version = "1.4.1"

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stored_state_path = "/var/lib/mandos/clients.pickle"

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version = "1.5.5"

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stored_state_file = "clients.pickle"

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logger = logging.getLogger()

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syslogger = (logging.handlers.SysLogHandler

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return interface_index

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def initlogger(level=logging.WARNING):

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def initlogger(debug, level=logging.WARNING):

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"""init logger and add loglevel"""

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syslogger.setFormatter(logging.Formatter

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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('%(asctime)s %(name)s'

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' [%(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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if debug:

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console = logging.StreamHandler()

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console.setFormatter(logging.Formatter('%(asctime)s %(name)s'

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' [%(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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logger.setLevel(level)

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class PGPError(Exception):

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"""Exception if encryption/decryption fails"""

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pass

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class PGPEngine(object):

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"""A simple class for OpenPGP symmetric encryption & decryption"""

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def __init__(self):

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self.gnupg = GnuPGInterface.GnuPG()

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self.tempdir = tempfile.mkdtemp(prefix="mandos-")

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self.gnupg = GnuPGInterface.GnuPG()

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self.gnupg.options.meta_interactive = False

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self.gnupg.options.homedir = self.tempdir

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self.gnupg.options.extra_args.extend(['--force-mdc',

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'--quiet',

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'--no-use-agent'])

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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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self._cleanup()

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return False

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def __del__(self):

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self._cleanup()

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def _cleanup(self):

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if self.tempdir is not None:

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# Delete contents of tempdir

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for root, dirs, files in os.walk(self.tempdir,

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topdown = False):

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for filename in files:

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os.remove(os.path.join(root, filename))

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for dirname in dirs:

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os.rmdir(os.path.join(root, dirname))

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# Remove tempdir

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os.rmdir(self.tempdir)

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self.tempdir = None

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def password_encode(self, password):

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# Passphrase can not be empty and can not contain newlines or

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# NUL bytes. So we prefix it and hex encode it.

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return b"mandos" + binascii.hexlify(password)

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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, "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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attach_fhs={'stderr': devnull})

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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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ciphertext = f.read()

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proc.wait()

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except IOError as e:

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raise PGPError(e)

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self.gnupg.passphrase = None

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return ciphertext

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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, "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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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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proc.wait()

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except IOError as e:

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raise PGPError(e)

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self.gnupg.passphrase = None

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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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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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Attributes:

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_approved: bool(); 'None' if not yet approved/disapproved

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approved: bool(); 'None' if not yet approved/disapproved

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approval_delay: datetime.timedelta(); Time to wait for approval

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approval_duration: datetime.timedelta(); Duration of one approval

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

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interval: datetime.timedelta(); How often to start a new checker

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last_approval_request: datetime.datetime(); (UTC) or None

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last_checked_ok: datetime.datetime(); (UTC) or None

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last_checker_status: integer between 0 and 255 reflecting exit status

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of last checker. -1 reflect crashed checker,

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or None.

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last_enabled: datetime.datetime(); (UTC)

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last_checker_status: integer between 0 and 255 reflecting exit

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status of last checker. -1 reflects crashed

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checker, -2 means no checker completed yet.

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last_enabled: datetime.datetime(); (UTC) or None

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name: string; from the config file, used in log messages and

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D-Bus identifiers

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secret: bytestring; sent verbatim (over TLS) to client

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timeout: datetime.timedelta(); How long from last_checked_ok

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until this client is disabled

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extended_timeout: extra long timeout when password has been sent

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extended_timeout: extra long timeout when secret has been sent

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runtime_expansions: Allowed attributes for runtime expansion.

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expires: datetime.datetime(); time (UTC) when a client will be

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disabled, or None

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"""

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runtime_expansions = ("approval_delay", "approval_duration",

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

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

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"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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"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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"approved_by_default": "True",

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"enabled": "True",

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}

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def timeout_milliseconds(self):

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"Return the 'timeout' attribute in milliseconds"

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return _timedelta_to_milliseconds(self.timeout)

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return timedelta_to_milliseconds(self.timeout)

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def extended_timeout_milliseconds(self):

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"Return the 'extended_timeout' attribute in milliseconds"

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return _timedelta_to_milliseconds(self.extended_timeout)

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return timedelta_to_milliseconds(self.extended_timeout)

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def interval_milliseconds(self):

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"Return the 'interval' attribute in milliseconds"

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return _timedelta_to_milliseconds(self.interval)

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return timedelta_to_milliseconds(self.interval)

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def approval_delay_milliseconds(self):

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return _timedelta_to_milliseconds(self.approval_delay)

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def __init__(self, name = None, config=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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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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{ client_name: {setting_name: value, ...}, ...}

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with exceptions for any special settings as defined above.

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NOTE: Must be a pure function. Must return the same result

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value given the same arguments.

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"""

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settings = {}

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for client_name in config.sections():

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section = dict(config.items(client_name))

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client = settings[client_name] = {}

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client["host"] = section["host"]

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# Reformat values from string types to Python types

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client["approved_by_default"] = config.getboolean(

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client_name, "approved_by_default")

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client["enabled"] = config.getboolean(client_name,

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"enabled")

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client["fingerprint"] = (section["fingerprint"].upper()

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.replace(" ", ""))

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if "secret" in section:

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client["secret"] = section["secret"].decode("base64")

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elif "secfile" in section:

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

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(section["secfile"])),

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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 {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["interval"] = string_to_delta(section["interval"])

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client["approval_delay"] = string_to_delta(

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section["approval_delay"])

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client["approval_duration"] = string_to_delta(

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section["approval_duration"])

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client["checker_command"] = section["checker"]

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client["last_approval_request"] = None

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client["last_checked_ok"] = None

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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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self.name = name

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if config is None:

375

config = {}

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# adding all client settings

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for setting, value in settings.iteritems():

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setattr(self, setting, value)

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if self.enabled:

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if not hasattr(self, "last_enabled"):

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self.last_enabled = datetime.datetime.utcnow()

531

if not hasattr(self, "expires"):

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

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+ self.timeout)

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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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# function

380

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

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.replace(" ", ""))

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542

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

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if "secret" in config:

384

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

385

elif "secfile" in config:

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

387

(config["secfile"])),

388

"rb") as secfile:

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self.secret = secfile.read()

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else:

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

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% self.name)

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

394

self.created = datetime.datetime.utcnow()

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self.enabled = True

396

self.last_approval_request = None

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self.last_enabled = datetime.datetime.utcnow()

398

self.last_checked_ok = None

399

self.last_checker_status = None

400

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

401

self.extended_timeout = string_to_delta(config

402

["extended_timeout"])

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

543

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

544

datetime.datetime.utcnow())

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546

# attributes specific for this server instance

404

547

self.checker = None

405

548

self.checker_initiator_tag = None

406

549

self.disable_initiator_tag = None

407

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

408

550

self.checker_callback_tag = None

409

self.checker_command = config["checker"]

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self.current_checker_command = None

411

self._approved = None

412

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

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True)

552

self.approved = None

414

553

self.approvals_pending = 0

415

self.approval_delay = string_to_delta(

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config["approval_delay"])

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self.approval_duration = string_to_delta(

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config["approval_duration"])

419

554

self.changedstate = (multiprocessing_manager

420

555

.Condition(multiprocessing_manager

421

556

.Lock()))

422

self.client_structure = [attr for attr in self.__dict__.iterkeys() if not attr.startswith("_")]

557

self.client_structure = [attr for attr in

558

self.__dict__.iterkeys()

559

if not attr.startswith("_")]

423

560

self.client_structure.append("client_structure")

424

561

425

562

for name, t in inspect.getmembers(type(self),

426

lambda obj: isinstance(obj, property)):

563

lambda obj:

564

isinstance(obj,

565

property)):

427

566

if not name.startswith("_"):

428

567

self.client_structure.append(name)

429

568

437

576

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

438

577

# Already enabled

439

578

return

440

self.send_changedstate()

441

579

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

442

580

self.enabled = True

443

581

self.last_enabled = datetime.datetime.utcnow()

444

582

self.init_checker()

583

self.send_changedstate()

445

584

446

585

def disable(self, quiet=True):

447

586

"""Disable this client."""

448

587

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

449

588

return False

450

589

if not quiet:

451

self.send_changedstate()

452

if not quiet:

453

590

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

454

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

591

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

455

592

gobject.source_remove(self.disable_initiator_tag)

456

593

self.disable_initiator_tag = None

457

594

self.expires = None

458

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

595

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

459

596

gobject.source_remove(self.checker_initiator_tag)

460

597

self.checker_initiator_tag = None

461

598

self.stop_checker()

462

599

self.enabled = False

600

if not quiet:

601

self.send_changedstate()

463

602

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

464

603

return False

465

604

469

608

def init_checker(self):

470

609

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

471

610

# and every interval from then on.

611

if self.checker_initiator_tag is not None:

612

gobject.source_remove(self.checker_initiator_tag)

472

613

self.checker_initiator_tag = (gobject.timeout_add

473

614

(self.interval_milliseconds(),

474

615

self.start_checker))

475

616

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

617

if self.disable_initiator_tag is not None:

618

gobject.source_remove(self.disable_initiator_tag)

476

619

self.disable_initiator_tag = (gobject.timeout_add

477

620

(self.timeout_milliseconds(),

478

621

self.disable))

484

627

self.checker_callback_tag = None

485

628

self.checker = None

486

629

if os.WIFEXITED(condition):

487

self.last_checker_status = os.WEXITSTATUS(condition)

630

self.last_checker_status = os.WEXITSTATUS(condition)

488

631

if self.last_checker_status == 0:

489

632

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

490

633

vars(self))

497

640

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

498

641

vars(self))

499

642

500

def checked_ok(self, timeout=None):

501

"""Bump up the timeout for this client.

502

503

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

504

alive and well.

505

"""

643

def checked_ok(self):

644

"""Assert that the client has been seen, alive and well."""

645

self.last_checked_ok = datetime.datetime.utcnow()

646

self.last_checker_status = 0

647

self.bump_timeout()

648

649

def bump_timeout(self, timeout=None):

650

"""Bump up the timeout for this client."""

506

651

if timeout is None:

507

652

timeout = self.timeout

508

self.last_checked_ok = datetime.datetime.utcnow()

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653

if self.disable_initiator_tag is not None:

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654

gobject.source_remove(self.disable_initiator_tag)

655

self.disable_initiator_tag = None

511

656

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

512

657

self.disable_initiator_tag = (gobject.timeout_add

513

(_timedelta_to_milliseconds

658

(timedelta_to_milliseconds

514

659

(timeout), self.disable))

515

660

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

516

661

523

668

If a checker already exists, leave it running and do

524

669

nothing."""

525

670

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

526

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

527

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

528

# client would inevitably timeout, since no checker would get

529

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

671

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

672

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

673

# would inevitably timeout, since no checker would get a

674

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

530

675

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

531

676

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

532

677

# should be.

546

691

self.current_checker_command)

547

692

# Start a new checker if needed

548

693

if self.checker is None:

694

# Escape attributes for the shell

695

escaped_attrs = dict(

696

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

697

for attr in

698

self.runtime_expansions)

549

699

try:

550

# In case checker_command has exactly one % operator

551

command = self.checker_command % self.host

552

except TypeError:

553

# Escape attributes for the shell

554

escaped_attrs = dict(

555

(attr,

556

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

557

errors=

558

'replace')))

559

for attr in

560

self.runtime_expansions)

561

562

try:

563

command = self.checker_command % escaped_attrs

564

except TypeError as error:

565

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

566

' %s', self.checker_command, error)

567

return True # Try again later

700

command = self.checker_command % escaped_attrs

701

except TypeError as error:

702

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

703

self.checker_command, exc_info=error)

704

return True # Try again later

568

705

self.current_checker_command = command

569

706

try:

570

707

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

576

713

self.checker = subprocess.Popen(command,

577

714

close_fds=True,

578

715

shell=True, cwd="/")

579

self.checker_callback_tag = (gobject.child_watch_add

580

(self.checker.pid,

581

self.checker_callback,

582

data=command))

583

# The checker may have completed before the gobject

584

# watch was added. Check for this.

585

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

586

if pid:

587

gobject.source_remove(self.checker_callback_tag)

588

self.checker_callback(pid, status, command)

589

716

except OSError as error:

590

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

591

error)

717

logger.error("Failed to start subprocess",

718

exc_info=error)

719

self.checker_callback_tag = (gobject.child_watch_add

720

(self.checker.pid,

721

self.checker_callback,

722

data=command))

723

# The checker may have completed before the gobject

724

# watch was added. Check for this.

725

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

726

if pid:

727

gobject.source_remove(self.checker_callback_tag)

728

self.checker_callback(pid, status, command)

592

729

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

593

730

return True

594

731

601

738

return

602

739

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

603

740

try:

604

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

741

self.checker.terminate()

605

742

#time.sleep(0.5)

606

743

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

607

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

744

# self.checker.kill()

608

745

except OSError as error:

609

746

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

610

747

raise

611

748

self.checker = None

612

613

# Encrypts a client secret and stores it in a varible encrypted_secret

614

def encrypt_secret(self, key):

615

# Encryption-key need to be of a specific size, so we hash inputed key

616

hasheng = hashlib.sha256()

617

hasheng.update(key)

618

encryptionkey = hasheng.digest()

619

620

# Create validation hash so we know at decryption if it was sucessful

621

hasheng = hashlib.sha256()

622

hasheng.update(self.secret)

623

validationhash = hasheng.digest()

624

625

# Encrypt secret

626

iv = os.urandom(Crypto.Cipher.AES.block_size)

627

ciphereng = Crypto.Cipher.AES.new(encryptionkey,

628

Crypto.Cipher.AES.MODE_CFB, iv)

629

ciphertext = ciphereng.encrypt(validationhash+self.secret)

630

self.encrypted_secret = (ciphertext, iv)

631

632

# Decrypt a encrypted client secret

633

def decrypt_secret(self, key):

634

# Decryption-key need to be of a specific size, so we hash inputed key

635

hasheng = hashlib.sha256()

636

hasheng.update(key)

637

encryptionkey = hasheng.digest()

638

639

# Decrypt encrypted secret

640

ciphertext, iv = self.encrypted_secret

641

ciphereng = Crypto.Cipher.AES.new(encryptionkey,

642

Crypto.Cipher.AES.MODE_CFB, iv)

643

plain = ciphereng.decrypt(ciphertext)

644

645

# Validate decrypted secret to know if it was succesful

646

hasheng = hashlib.sha256()

647

validationhash = plain[:hasheng.digest_size]

648

secret = plain[hasheng.digest_size:]

649

hasheng.update(secret)

650

651

# if validation fails, we use key as new secret. Otherwhise, we use

652

# the decrypted secret

653

if hasheng.digest() == validationhash:

654

self.secret = secret

655

else:

656

self.secret = key

657

del self.encrypted_secret

658

749

659

750

660

751

def dbus_service_property(dbus_interface, signature="v",

673

764

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

674

765

if byte_arrays and signature != "ay":

675

766

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

676

" signature %r" % signature)

767

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

677

768

def decorator(func):

678

769

func._dbus_is_property = True

679

770

func._dbus_interface = dbus_interface

687

778

return decorator

688

779

689

780

781

def dbus_interface_annotations(dbus_interface):

782

"""Decorator for marking functions returning interface annotations

783

784

Usage:

785

786

@dbus_interface_annotations("org.example.Interface")

787

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

788

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

789

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

790

"false"}

791

"""

792

def decorator(func):

793

func._dbus_is_interface = True

794

func._dbus_interface = dbus_interface

795

func._dbus_name = dbus_interface

796

return func

797

return decorator

798

799

800

def dbus_annotations(annotations):

801

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

802

Usage:

803

804

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

805

access="r")

806

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

807

"org.freedesktop.DBus.Property."

808

"EmitsChangedSignal": "false"})

809

def Property_dbus_property(self):

810

return dbus.Boolean(False)

811

"""

812

def decorator(func):

813

func._dbus_annotations = annotations

814

return func

815

return decorator

816

817

690

818

class DBusPropertyException(dbus.exceptions.DBusException):

691

819

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

692

820

"""

715

843

"""

716

844

717

845

@staticmethod

718

def _is_dbus_property(obj):

719

return getattr(obj, "_dbus_is_property", False)

846

def _is_dbus_thing(thing):

847

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

848

849

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

850

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

851

"""

852

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

853

False)

720

854

721

def _get_all_dbus_properties(self):

855

def _get_all_dbus_things(self, thing):

722

856

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

723

857

"""

724

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

858

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

859

name),

860

athing.__get__(self))

725

861

for cls in self.__class__.__mro__

726

for name, prop in

727

inspect.getmembers(cls, self._is_dbus_property))

862

for name, athing in

863

inspect.getmembers(cls,

864

self._is_dbus_thing(thing)))

728

865

729

866

def _get_dbus_property(self, interface_name, property_name):

730

867

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

732

869

"""

733

870

for cls in self.__class__.__mro__:

734

871

for name, value in (inspect.getmembers

735

(cls, self._is_dbus_property)):

872

(cls,

873

self._is_dbus_thing("property"))):

736

874

if (value._dbus_name == property_name

737

875

and value._dbus_interface == interface_name):

738

876

return value.__get__(self)

767

905

# signatures other than "ay".

768

906

if prop._dbus_signature != "ay":

769

907

raise ValueError

770

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

771

for byte in value))

908

value = dbus.ByteArray(b''.join(chr(byte)

909

for byte in value))

772

910

prop(value)

773

911

774

912

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

780

918

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

781

919

"""

782

920

properties = {}

783

for name, prop in self._get_all_dbus_properties():

921

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

784

922

if (interface_name

785

923

and interface_name != prop._dbus_interface):

786

924

# Interface non-empty but did not match

801

939

path_keyword='object_path',

802

940

connection_keyword='connection')

803

941

def Introspect(self, object_path, connection):

804

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

942

"""Overloading of standard D-Bus method.

943

944

Inserts property tags and interface annotation tags.

805

945

"""

806

946

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

807

947

connection)

814

954

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

815

955

return e

816

956

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

957

# Add property tags

817

958

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

818

959

for name, prop

819

in self._get_all_dbus_properties()

960

in self._get_all_dbus_things("property")

820

961

if prop._dbus_interface

821

962

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

822

963

if_tag.appendChild(tag)

964

# Add annotation tags

965

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

966

for tag in if_tag.getElementsByTagName(typ):

967

annots = dict()

968

for name, prop in (self.

969

_get_all_dbus_things(typ)):

970

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

971

and prop._dbus_interface

972

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

973

annots.update(getattr

974

(prop,

975

"_dbus_annotations",

976

{}))

977

for name, value in annots.iteritems():

978

ann_tag = document.createElement(

979

"annotation")

980

ann_tag.setAttribute("name", name)

981

ann_tag.setAttribute("value", value)

982

tag.appendChild(ann_tag)

983

# Add interface annotation tags

984

for annotation, value in dict(

985

itertools.chain.from_iterable(

986

annotations().iteritems()

987

for name, annotations in

988

self._get_all_dbus_things("interface")

989

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

990

)).iteritems():

991

ann_tag = document.createElement("annotation")

992

ann_tag.setAttribute("name", annotation)

993

ann_tag.setAttribute("value", value)

994

if_tag.appendChild(ann_tag)

823

995

# Add the names to the return values for the

824

996

# "org.freedesktop.DBus.Properties" methods

825

997

if (if_tag.getAttribute("name")

840

1012

except (AttributeError, xml.dom.DOMException,

841

1013

xml.parsers.expat.ExpatError) as error:

842

1014

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

843

error)

1015

exc_info=error)

844

1016

return xmlstring

845

1017

846

1018

847

def datetime_to_dbus (dt, variant_level=0):

1019

def datetime_to_dbus(dt, variant_level=0):

848

1020

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

849

1021

if dt is None:

850

1022

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

852

1024

variant_level=variant_level)

853

1025

854

1026

855

class AlternateDBusNamesMetaclass(DBusObjectWithProperties

856

.__metaclass__):

857

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

858

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

1027

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1028

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

1029

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

1030

interface names according to the "alt_interface_names" mapping.

1031

Usage:

1032

1033

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

1034

"net.example.AlternateInterface"})

1035

class SampleDBusObject(dbus.service.Object):

1036

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

1037

def SampleDBusMethod():

1038

pass

1039

1040

The above "SampleDBusMethod" on "SampleDBusObject" will be

1041

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

1042

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

1043

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

1044

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

1045

1046

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

1047

(from DBusObjectWithProperties) and interfaces (from the

1048

dbus_interface_annotations decorator).

859

1049

"""

860

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

861

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

862

# methods, signals, or properties in them

863

for base in (b for b in bases

864

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

865

# Go though all attributes of the base class

866

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

1050

def wrapper(cls):

1051

for orig_interface_name, alt_interface_name in (

1052

alt_interface_names.iteritems()):

1053

attr = {}

1054

interface_names = set()

1055

# Go though all attributes of the class

1056

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

867

1057

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

868

1058

# with the wrong interface name

869

1059

if (not hasattr(attribute, "_dbus_interface")

870

1060

or not attribute._dbus_interface

871

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

1061

.startswith(orig_interface_name)):

872

1062

continue

873

1063

# Create an alternate D-Bus interface name based on

874

1064

# the current name

875

1065

alt_interface = (attribute._dbus_interface

876

.replace("se.recompile.Mandos",

877

"se.bsnet.fukt.Mandos"))

1066

.replace(orig_interface_name,

1067

alt_interface_name))

1068

interface_names.add(alt_interface)

878

1069

# Is this a D-Bus signal?

879

1070

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

880

1071

# Extract the original non-method function by

895

1086

nonmethod_func.func_name,

896

1087

nonmethod_func.func_defaults,

897

1088

nonmethod_func.func_closure)))

1089

# Copy annotations, if any

1090

try:

1091

new_function._dbus_annotations = (

1092

dict(attribute._dbus_annotations))

1093

except AttributeError:

1094

pass

898

1095

# Define a creator of a function to call both the

899

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

900

# signals gets sent when the function is called

1096

# original and alternate functions, so both the

1097

# original and alternate signals gets sent when

1098

# the function is called

901

1099

def fixscope(func1, func2):

902

1100

"""This function is a scope container to pass

903

1101

func1 and func2 to the "call_both" function

910

1108

return call_both

911

1109

# Create the "call_both" function and add it to

912

1110

# the class

913

attr[attrname] = fixscope(attribute,

914

new_function)

1111

attr[attrname] = fixscope(attribute, new_function)

915

1112

# Is this a D-Bus method?

916

1113

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

917

1114

# Create a new, but exactly alike, function

928

1125

attribute.func_name,

929

1126

attribute.func_defaults,

930

1127

attribute.func_closure)))

1128

# Copy annotations, if any

1129

try:

1130

attr[attrname]._dbus_annotations = (

1131

dict(attribute._dbus_annotations))

1132

except AttributeError:

1133

pass

931

1134

# Is this a D-Bus property?

932

1135

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

933

1136

# Create a new, but exactly alike, function

947

1150

attribute.func_name,

948

1151

attribute.func_defaults,

949

1152

attribute.func_closure)))

950

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

951

952

1153

# Copy annotations, if any

1154

try:

1155

attr[attrname]._dbus_annotations = (

1156

dict(attribute._dbus_annotations))

1157

except AttributeError:

1158

pass

1159

# Is this a D-Bus interface?

1160

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

1161

# Create a new, but exactly alike, function

1162

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

1163

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

1164

# to the class.

1165

attr[attrname] = (dbus_interface_annotations

1166

(alt_interface)

1167

(types.FunctionType

1168

(attribute.func_code,

1169

attribute.func_globals,

1170

attribute.func_name,

1171

attribute.func_defaults,

1172

attribute.func_closure)))

1173

if deprecate:

1174

# Deprecate all alternate interfaces

1175

iname="_AlternateDBusNames_interface_annotation{0}"

1176

for interface_name in interface_names:

1177

@dbus_interface_annotations(interface_name)

1178

def func(self):

1179

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

1180

"true" }

1181

# Find an unused name

1182

for aname in (iname.format(i)

1183

for i in itertools.count()):

1184

if aname not in attr:

1185

attr[aname] = func

1186

break

1187

if interface_names:

1188

# Replace the class with a new subclass of it with

1189

# methods, signals, etc. as created above.

1190

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

1191

(cls,), attr)

1192

return cls

1193

return wrapper

1194

1195

1196

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

1197

"se.bsnet.fukt.Mandos"})

953

1198

class ClientDBus(Client, DBusObjectWithProperties):

954

1199

"""A Client class using D-Bus

955

1200

966

1211

def __init__(self, bus = None, *args, **kwargs):

967

1212

self.bus = bus

968

1213

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

969

970

self._approvals_pending = 0

971

1214

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

972

1215

# the D-Bus

973

1216

client_object_name = unicode(self.name).translate(

977

1220

("/clients/" + client_object_name))

978

1221

DBusObjectWithProperties.__init__(self, self.bus,

979

1222

self.dbus_object_path)

980

1223

981

1224

def notifychangeproperty(transform_func,

982

1225

dbus_name, type_func=lambda x: x,

983

1226

variant_level=1):

1006

1249

1007

1250

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

1008

1251

1009

1010

1252

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1011

1253

approvals_pending = notifychangeproperty(dbus.Boolean,

1012

1254

"ApprovalPending",

1019

1261

checker is not None)

1020

1262

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1021

1263

"LastCheckedOK")

1264

last_checker_status = notifychangeproperty(dbus.Int16,

1265

"LastCheckerStatus")

1022

1266

last_approval_request = notifychangeproperty(

1023

1267

datetime_to_dbus, "LastApprovalRequest")

1024

1268

approved_by_default = notifychangeproperty(dbus.Boolean,

1025

1269

"ApprovedByDefault")

1026

approval_delay = notifychangeproperty(dbus.UInt16,

1270

approval_delay = notifychangeproperty(dbus.UInt64,

1027

1271

"ApprovalDelay",

1028

1272

type_func =

1029

_timedelta_to_milliseconds)

1273

timedelta_to_milliseconds)

1030

1274

approval_duration = notifychangeproperty(

1031

dbus.UInt16, "ApprovalDuration",

1032

type_func = _timedelta_to_milliseconds)

1275

dbus.UInt64, "ApprovalDuration",

1276

type_func = timedelta_to_milliseconds)

1033

1277

host = notifychangeproperty(dbus.String, "Host")

1034

timeout = notifychangeproperty(dbus.UInt16, "Timeout",

1278

timeout = notifychangeproperty(dbus.UInt64, "Timeout",

1035

1279

type_func =

1036

_timedelta_to_milliseconds)

1280

timedelta_to_milliseconds)

1037

1281

extended_timeout = notifychangeproperty(

1038

dbus.UInt16, "ExtendedTimeout",

1039

type_func = _timedelta_to_milliseconds)

1040

interval = notifychangeproperty(dbus.UInt16,

1282

dbus.UInt64, "ExtendedTimeout",

1283

type_func = timedelta_to_milliseconds)

1284

interval = notifychangeproperty(dbus.UInt64,

1041

1285

"Interval",

1042

1286

type_func =

1043

_timedelta_to_milliseconds)

1287

timedelta_to_milliseconds)

1044

1288

checker_command = notifychangeproperty(dbus.String, "Checker")

1045

1289

1046

1290

del notifychangeproperty

1088

1332

return r

1089

1333

1090

1334

def _reset_approved(self):

1091

self._approved = None

1335

self.approved = None

1092

1336

return False

1093

1337

1094

1338

def approve(self, value=True):

1095

self.send_changedstate()

1096

self._approved = value

1097

gobject.timeout_add(_timedelta_to_milliseconds

1339

self.approved = value

1340

gobject.timeout_add(timedelta_to_milliseconds

1098

1341

(self.approval_duration),

1099

1342

self._reset_approved)

1100

1343

self.send_changedstate()

1101

1344

1102

1345

## D-Bus methods, signals & properties

1103

1346

_interface = "se.recompile.Mandos.Client"

1104

1347

1348

## Interfaces

1349

1350

@dbus_interface_annotations(_interface)

1351

def _foo(self):

1352

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

1353

"false"}

1354

1105

1355

## Signals

1106

1356

1107

1357

# CheckerCompleted - signal

1143

1393

"D-Bus signal"

1144

1394

return self.need_approval()

1145

1395

1146

# NeRwequest - signal

1147

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

1148

def NewRequest(self, ip):

1149

"""D-Bus signal

1150

Is sent after a client request a password.

1151

"""

1152

pass

1153

1154

1396

## Methods

1155

1397

1156

1398

# Approve - method

1214

1456

access="readwrite")

1215

1457

def ApprovalDuration_dbus_property(self, value=None):

1216

1458

if value is None: # get

1217

return dbus.UInt64(_timedelta_to_milliseconds(

1459

return dbus.UInt64(timedelta_to_milliseconds(

1218

1460

self.approval_duration))

1219

1461

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

1220

1462

1234

1476

def Host_dbus_property(self, value=None):

1235

1477

if value is None: # get

1236

1478

return dbus.String(self.host)

1237

self.host = value

1479

self.host = unicode(value)

1238

1480

1239

1481

# Created - property

1240

1482

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

1241

1483

def Created_dbus_property(self):

1242

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

1484

return datetime_to_dbus(self.created)

1243

1485

1244

1486

# LastEnabled - property

1245

1487

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

1266

1508

return

1267

1509

return datetime_to_dbus(self.last_checked_ok)

1268

1510

1511

# LastCheckerStatus - property

1512

@dbus_service_property(_interface, signature="n",

1513

access="read")

1514

def LastCheckerStatus_dbus_property(self):

1515

return dbus.Int16(self.last_checker_status)

1516

1269

1517

# Expires - property

1270

1518

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

1271

1519

def Expires_dbus_property(self):

1282

1530

def Timeout_dbus_property(self, value=None):

1283

1531

if value is None: # get

1284

1532

return dbus.UInt64(self.timeout_milliseconds())

1533

old_timeout = self.timeout

1285

1534

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

1286

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

1287

return

1288

# Reschedule timeout

1289

gobject.source_remove(self.disable_initiator_tag)

1290

self.disable_initiator_tag = None

1291

self.expires = None

1292

time_to_die = _timedelta_to_milliseconds((self

1293

.last_checked_ok

1294

+ self.timeout)

1295

- datetime.datetime

1296

.utcnow())

1297

if time_to_die <= 0:

1298

# The timeout has passed

1299

self.disable()

1300

else:

1301

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

1302

+ datetime.timedelta(milliseconds =

1303

time_to_die))

1304

self.disable_initiator_tag = (gobject.timeout_add

1305

(time_to_die, self.disable))

1535

# Reschedule disabling

1536

if self.enabled:

1537

now = datetime.datetime.utcnow()

1538

self.expires += self.timeout - old_timeout

1539

if self.expires <= now:

1540

# The timeout has passed

1541

self.disable()

1542

else:

1543

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

1544

is None):

1545

return

1546

gobject.source_remove(self.disable_initiator_tag)

1547

self.disable_initiator_tag = (

1548

gobject.timeout_add(

1549

timedelta_to_milliseconds(self.expires - now),

1550

self.disable))

1306

1551

1307

1552

# ExtendedTimeout - property

1308

1553

@dbus_service_property(_interface, signature="t",

1321

1566

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

1322

1567

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

1323

1568

return

1324

# Reschedule checker run

1325

gobject.source_remove(self.checker_initiator_tag)

1326

self.checker_initiator_tag = (gobject.timeout_add

1327

(value, self.start_checker))

1328

self.start_checker() # Start one now, too

1569

if self.enabled:

1570

# Reschedule checker run

1571

gobject.source_remove(self.checker_initiator_tag)

1572

self.checker_initiator_tag = (gobject.timeout_add

1573

(value, self.start_checker))

1574

self.start_checker() # Start one now, too

1329

1575

1330

1576

# Checker - property

1331

1577

@dbus_service_property(_interface, signature="s",

1333

1579

def Checker_dbus_property(self, value=None):

1334

1580

if value is None: # get

1335

1581

return dbus.String(self.checker_command)

1336

self.checker_command = value

1582

self.checker_command = unicode(value)

1337

1583

1338

1584

# CheckerRunning - property

1339

1585

@dbus_service_property(_interface, signature="b",

1368

1614

raise KeyError()

1369

1615

1370

1616

def __getattribute__(self, name):

1371

if(name == '_pipe'):

1617

if name == '_pipe':

1372

1618

return super(ProxyClient, self).__getattribute__(name)

1373

1619

self._pipe.send(('getattr', name))

1374

1620

data = self._pipe.recv()

1381

1627

return func

1382

1628

1383

1629

def __setattr__(self, name, value):

1384

if(name == '_pipe'):

1630

if name == '_pipe':

1385

1631

return super(ProxyClient, self).__setattr__(name, value)

1386

1632

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

1387

1633

1388

1634

1389

class ClientDBusTransitional(ClientDBus):

1390

__metaclass__ = AlternateDBusNamesMetaclass

1391

1392

1393

1635

class ClientHandler(socketserver.BaseRequestHandler, object):

1394

1636

"""A class to handle client connections.

1395

1637

1456

1698

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

1457

1699

return

1458

1700

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

1459

if self.server.use_dbus:

1460

# Emit D-Bus signal

1461

client.NewRequest(str(self.client_address))

1462

1701

1463

1702

try:

1464

1703

client = ProxyClient(child_pipe, fpr,

1480

1719

client.Rejected("Disabled")

1481

1720

return

1482

1721

1483

if client._approved or not client.approval_delay:

1722

if client.approved or not client.approval_delay:

1484

1723

#We are approved or approval is disabled

1485

1724

break

1486

elif client._approved is None:

1725

elif client.approved is None:

1487

1726

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

1488

1727

client.name)

1489

1728

if self.server.use_dbus:

1502

1741

#wait until timeout or approved

1503

1742

time = datetime.datetime.now()

1504

1743

client.changedstate.acquire()

1505

(client.changedstate.wait

1506

(float(client._timedelta_to_milliseconds(delay)

1507

/ 1000)))

1744

client.changedstate.wait(

1745

float(timedelta_to_milliseconds(delay)

1746

/ 1000))

1508

1747

client.changedstate.release()

1509

1748

time2 = datetime.datetime.now()

1510

1749

if (time2 - time) >= delay:

1526

1765

try:

1527

1766

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

1528

1767

except gnutls.errors.GNUTLSError as error:

1529

logger.warning("gnutls send failed")

1768

logger.warning("gnutls send failed",

1769

exc_info=error)

1530

1770

return

1531

1771

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

1532

1772

sent, len(client.secret)

1535

1775

1536

1776

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

1537

1777

# bump the timeout using extended_timeout

1538

client.checked_ok(client.extended_timeout)

1778

client.bump_timeout(client.extended_timeout)

1539

1779

if self.server.use_dbus:

1540

1780

# Emit D-Bus signal

1541

1781

client.GotSecret()

1546

1786

try:

1547

1787

session.bye()

1548

1788

except gnutls.errors.GNUTLSError as error:

1549

logger.warning("GnuTLS bye failed")

1789

logger.warning("GnuTLS bye failed",

1790

exc_info=error)

1550

1791

1551

1792

@staticmethod

1552

1793

def peer_certificate(session):

1608

1849

# Convert the buffer to a Python bytestring

1609

1850

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

1610

1851

# Convert the bytestring to hexadecimal notation

1611

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

1852

hex_fpr = binascii.hexlify(fpr).upper()

1612

1853

return hex_fpr

1613

1854

1614

1855

1617

1858

def sub_process_main(self, request, address):

1618

1859

try:

1619

1860

self.finish_request(request, address)

1620

except:

1861

except Exception:

1621

1862

self.handle_error(request, address)

1622

1863

self.close_request(request)

1623

1864

1624

1865

def process_request(self, request, address):

1625

1866

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

1626

1867

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

1627

args = (request,

1628

address))

1868

args = (request, address))

1629

1869

proc.start()

1630

1870

return proc

1631

1871

1659

1899

use_ipv6: Boolean; to use IPv6 or not

1660

1900

"""

1661

1901

def __init__(self, server_address, RequestHandlerClass,

1662

interface=None, use_ipv6=True):

1902

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

1903

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

1904

creating a new one with socket.socket().

1905

"""

1663

1906

self.interface = interface

1664

1907

if use_ipv6:

1665

1908

self.address_family = socket.AF_INET6

1909

if socketfd is not None:

1910

# Save the file descriptor

1911

self.socketfd = socketfd

1912

# Save the original socket.socket() function

1913

self.socket_socket = socket.socket

1914

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

1915

#

1916

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

1917

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

1918

# patching socket.socket.)

1919

#

1920

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

1921

@functools.wraps(socket.socket)

1922

def socket_wrapper(*args, **kwargs):

1923

# Restore original function so subsequent calls are

1924

# not affected.

1925

socket.socket = self.socket_socket

1926

del self.socket_socket

1927

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

1928

# saved file descriptor.

1929

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

1930

# Replace socket.socket() function with wrapper

1931

socket.socket = socket_wrapper

1932

# The socketserver.TCPServer.__init__ will call

1933

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

1934

# socket_wrapper(), if socketfd was set.

1666

1935

socketserver.TCPServer.__init__(self, server_address,

1667

1936

RequestHandlerClass)

1937

1668

1938

def server_bind(self):

1669

1939

"""This overrides the normal server_bind() function

1670

1940

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

1678

1948

try:

1679

1949

self.socket.setsockopt(socket.SOL_SOCKET,

1680

1950

SO_BINDTODEVICE,

1681

str(self.interface

1682

+ '\0'))

1951

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

1683

1952

except socket.error as error:

1684

if error[0] == errno.EPERM:

1685

logger.error("No permission to"

1686

" bind to interface %s",

1687

self.interface)

1688

elif error[0] == errno.ENOPROTOOPT:

1953

if error.errno == errno.EPERM:

1954

logger.error("No permission to bind to"

1955

" interface %s", self.interface)

1956

elif error.errno == errno.ENOPROTOOPT:

1689

1957

logger.error("SO_BINDTODEVICE not available;"

1690

1958

" cannot bind to interface %s",

1691

1959

self.interface)

1960

elif error.errno == errno.ENODEV:

1961

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

1962

" cannot bind", self.interface)

1692

1963

else:

1693

1964

raise

1694

1965

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

1724

1995

"""

1725

1996

def __init__(self, server_address, RequestHandlerClass,

1726

1997

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

1727

gnutls_priority=None, use_dbus=True):

1998

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

1728

1999

self.enabled = False

1729

2000

self.clients = clients

1730

2001

if self.clients is None:

1734

2005

IPv6_TCPServer.__init__(self, server_address,

1735

2006

RequestHandlerClass,

1736

2007

interface = interface,

1737

use_ipv6 = use_ipv6)

2008

use_ipv6 = use_ipv6,

2009

socketfd = socketfd)

1738

2010

def server_activate(self):

1739

2011

if self.enabled:

1740

2012

return socketserver.TCPServer.server_activate(self)

1753

2025

1754

2026

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

1755

2027

proc = None, client_object=None):

1756

condition_names = {

1757

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

1758

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

1759

# blocking).

1760

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

1761

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

1762

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

1763

# broken, usually for pipes and

1764

# sockets).

1765

}

1766

conditions_string = ' | '.join(name

1767

for cond, name in

1768

condition_names.iteritems()

1769

if cond & condition)

1770

2028

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

1771

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

2029

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

1772

2030

# Wait for other process to exit

1773

2031

proc.join()

1774

2032

return False

1864

2122

elif suffix == "w":

1865

2123

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

1866

2124

else:

1867

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

2125

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

2126

.format(suffix))

1868

2127

except (ValueError, IndexError) as e:

1869

2128

raise ValueError(*(e.args))

1870

2129

timevalue += delta

1884

2143

sys.exit()

1885

2144

if not noclose:

1886

2145

# Close all standard open file descriptors

1887

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

2146

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

1888

2147

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

1889

2148

raise OSError(errno.ENODEV,

1890

"%s not a character device"

1891

% os.path.devnull)

2149

"{0} not a character device"

2150

.format(os.devnull))

1892

2151

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

1893

2152

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

1894

2153

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

1903

2162

1904

2163

parser = argparse.ArgumentParser()

1905

2164

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

1906

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

2165

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

1907

2166

help="show version number and exit")

1908

2167

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

1909

2168

help="Bind to interface IF")

1932

2191

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

1933

2192

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

1934

2193

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

1935

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

1936

default=True)

2194

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

2195

" state")

2196

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

2197

help="Specify a file descriptor to a network"

2198

" socket to use instead of creating one")

2199

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

2200

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

2201

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

2202

help="Run in foreground")

1937

2203

1938

2204

options = parser.parse_args()

1939

2205

1953

2219

"use_dbus": "True",

1954

2220

"use_ipv6": "True",

1955

2221

"debuglevel": "",

2222

"restore": "True",

2223

"socket": "",

2224

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

2225

"foreground": "False",

1956

2226

}

1957

2227

1958

2228

# Parse config file for server-global settings

1963

2233

# Convert the SafeConfigParser object to a dict

1964

2234

server_settings = server_config.defaults()

1965

2235

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

1966

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

2236

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

1967

2237

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

1968

2238

option)

1969

2239

if server_settings["port"]:

1970

2240

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

1971

2241

"port")

2242

if server_settings["socket"]:

2243

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

2244

"socket")

2245

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

2246

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

2247

# happen with a supplied network socket.

2248

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

2249

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

2250

["socket"])

1972

2251

del server_config

1973

2252

1974

2253

# Override the settings from the config file with command line

1975

2254

# options, if set.

1976

2255

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

1977

2256

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

1978

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

2257

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

2258

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

1979

2259

value = getattr(options, option)

1980

2260

if value is not None:

1981

2261

server_settings[option] = value

1984

2264

for option in server_settings.keys():

1985

2265

if type(server_settings[option]) is str:

1986

2266

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

2267

# Debug implies foreground

2268

if server_settings["debug"]:

2269

server_settings["foreground"] = True

1987

2270

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

1988

2271

1989

2272

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

1993

2276

debuglevel = server_settings["debuglevel"]

1994

2277

use_dbus = server_settings["use_dbus"]

1995

2278

use_ipv6 = server_settings["use_ipv6"]

2279

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

2280

stored_state_file)

2281

foreground = server_settings["foreground"]

1996

2282

1997

2283

if debug:

1998

initlogger(logging.DEBUG)

2284

initlogger(debug, logging.DEBUG)

1999

2285

else:

2000

2286

if not debuglevel:

2001

initlogger()

2287

initlogger(debug)

2002

2288

else:

2003

2289

level = getattr(logging, debuglevel.upper())

2004

initlogger(level)

2290

initlogger(debug, level)

2005

2291

2006

2292

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

2007

2293

syslogger.setFormatter(logging.Formatter

2008

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

2009

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

2010

% server_settings["servicename"]))

2294

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

2295

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

2296

.format(server_settings

2297

["servicename"])))

2011

2298

2012

2299

# Parse config file with clients

2013

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

2014

"extended_timeout": "15m",

2015

"interval": "2m",

2016

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

2017

"host": "",

2018

"approval_delay": "0s",

2019

"approval_duration": "1s",

2020

}

2021

client_config = configparser.SafeConfigParser(client_defaults)

2300

client_config = configparser.SafeConfigParser(Client

2301

.client_defaults)

2022

2302

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

2023

2303

"clients.conf"))

2024

2304

2033

2313

use_ipv6=use_ipv6,

2034

2314

gnutls_priority=

2035

2315

server_settings["priority"],

2036

use_dbus=use_dbus)

2037

if not debug:

2316

use_dbus=use_dbus,

2317

socketfd=(server_settings["socket"]

2318

or None))

2319

if not foreground:

2038

2320

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

2321

pidfile = None

2039

2322

try:

2040

2323

pidfile = open(pidfilename, "w")

2041

except IOError:

2042

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

2324

except IOError as e:

2325

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

2326

exc_info=e)

2043

2327

2044

try:

2045

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

2046

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

2047

except KeyError:

2328

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

2048

2329

try:

2049

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

2050

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

2330

uid = pwd.getpwnam(name).pw_uid

2331

gid = pwd.getpwnam(name).pw_gid

2332

break

2051

2333

except KeyError:

2052

try:

2053

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

2054

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

2055

except KeyError:

2056

uid = 65534

2057

gid = 65534

2334

continue

2335

else:

2336

uid = 65534

2337

gid = 65534

2058

2338

try:

2059

2339

os.setgid(gid)

2060

2340

os.setuid(uid)

2061

2341

except OSError as error:

2062

if error[0] != errno.EPERM:

2342

if error.errno != errno.EPERM:

2063

2343

raise error

2064

2344

2065

2345

if debug:

2077

2357

.gnutls_global_set_log_function(debug_gnutls))

2078

2358

2079

2359

# Redirect stdin so all checkers get /dev/null

2080

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

2360

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

2081

2361

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

2082

2362

if null > 2:

2083

2363

os.close(null)

2084

else:

2085

# No console logging

2086

logger.removeHandler(console)

2087

2364

2088

2365

# Need to fork before connecting to D-Bus

2089

if not debug:

2366

if not foreground:

2090

2367

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

2091

2368

daemon()

2092

2369

2370

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

2371

# need to inform gobject that threads will be used.

2372

gobject.threads_init()

2373

2093

2374

global main_loop

2094

2375

# From the Avahi example code

2095

DBusGMainLoop(set_as_default=True )

2376

DBusGMainLoop(set_as_default=True)

2096

2377

main_loop = gobject.MainLoop()

2097

2378

bus = dbus.SystemBus()

2098

2379

# End of Avahi example code

2104

2385

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

2105

2386

do_not_queue=True))

2106

2387

except dbus.exceptions.NameExistsException as e:

2107

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

2388

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

2108

2389

use_dbus = False

2109

2390

server_settings["use_dbus"] = False

2110

2391

tcp_server.use_dbus = False

2122

2403

2123

2404

client_class = Client

2124

2405

if use_dbus:

2125

client_class = functools.partial(ClientDBusTransitional,

2126

bus = bus)

2127

2128

special_settings = {

2129

# Some settings need to be accessd by special methods;

2130

# booleans need .getboolean(), etc. Here is a list of them:

2131

"approved_by_default":

2132

lambda section:

2133

client_config.getboolean(section, "approved_by_default"),

2134

}

2135

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

2136

# { client_name: {setting_name: value, ...}, ...}

2137

# with exceptions for any special settings as defined above

2138

client_settings = dict((clientname,

2139

dict((setting,

2140

(value if setting not in special_settings

2141

else special_settings[setting](clientname)))

2142

for setting, value in client_config.items(clientname)))

2143

for clientname in client_config.sections())

2144

2406

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

2407

2408

client_settings = Client.config_parser(client_config)

2145

2409

old_client_settings = {}

2146

clients_data = []

2410

clients_data = {}

2147

2411

2148

# Get client data and settings from last running state.

2412

# Get client data and settings from last running state.

2149

2413

if server_settings["restore"]:

2150

2414

try:

2151

2415

with open(stored_state_path, "rb") as stored_state:

2152

clients_data, old_client_settings = pickle.load(stored_state)

2416

clients_data, old_client_settings = (pickle.load

2417

(stored_state))

2153

2418

os.remove(stored_state_path)

2154

2419

except IOError as e:

2155

logger.warning("Could not load persistant state: {0}".format(e))

2156

if e.errno != errno.ENOENT:

2420

if e.errno == errno.ENOENT:

2421

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

2422

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

2423

else:

2424

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

2425

exc_info=e)

2157

2426

raise

2427

except EOFError as e:

2428

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

2429

"EOFError:", exc_info=e)

2158

2430

2159

for client in clients_data:

2160

client_name = client["name"]

2161

2162

# Decide which value to use after restoring saved state.

2163

# We have three different values: Old config file,

2164

# new config file, and saved state.

2165

# New config value takes precedence if it differs from old

2166

# config value, otherwise use saved state.

2167

for name, value in client_settings[client_name].items():

2431

with PGPEngine() as pgp:

2432

for client_name, client in clients_data.iteritems():

2433

# Decide which value to use after restoring saved state.

2434

# We have three different values: Old config file,

2435

# new config file, and saved state.

2436

# New config value takes precedence if it differs from old

2437

# config value, otherwise use saved state.

2438

for name, value in client_settings[client_name].items():

2439

try:

2440

# For each value in new config, check if it

2441

# differs from the old config value (Except for

2442

# the "secret" attribute)

2443

if (name != "secret" and

2444

value != old_client_settings[client_name]

2445

[name]):

2446

client[name] = value

2447

except KeyError:

2448

pass

2449

2450

# Clients who has passed its expire date can still be

2451

# enabled if its last checker was successful. Clients

2452

# whose checker succeeded before we stored its state is

2453

# assumed to have successfully run all checkers during

2454

# downtime.

2455

if client["enabled"]:

2456

if datetime.datetime.utcnow() >= client["expires"]:

2457

if not client["last_checked_ok"]:

2458

logger.warning(

2459

"disabling client {0} - Client never "

2460

"performed a successful checker"

2461

.format(client_name))

2462

client["enabled"] = False

2463

elif client["last_checker_status"] != 0:

2464

logger.warning(

2465

"disabling client {0} - Client "

2466

"last checker failed with error code {1}"

2467

.format(client_name,

2468

client["last_checker_status"]))

2469

client["enabled"] = False

2470

else:

2471

client["expires"] = (datetime.datetime

2472

.utcnow()

2473

+ client["timeout"])

2474

logger.debug("Last checker succeeded,"

2475

" keeping {0} enabled"

2476

.format(client_name))

2168

2477

try:

2169

# For each value in new config, check if it differs

2170

# from the old config value (Except for the "secret"

2171

# attribute)

2172

if name != "secret" and value != old_client_settings[client_name][name]:

2173

setattr(client, name, value)

2174

except KeyError:

2175

pass

2176

2177

# Clients who has passed its expire date, can still be enabled if its

2178

# last checker was sucessful. Clients who checkers failed before we

2179

# stored it state is asumed to had failed checker during downtime.

2180

if client["enabled"] and client["last_checked_ok"]:

2181

if ((datetime.datetime.utcnow() - client["last_checked_ok"])

2182

> client["interval"]):

2183

if client["last_checker_status"] != 0:

2184

client["enabled"] = False

2185

else:

2186

client["expires"] = datetime.datetime.utcnow() + client["timeout"]

2187

2188

client["changedstate"] = (multiprocessing_manager

2189

.Condition(multiprocessing_manager

2190

.Lock()))

2191

if use_dbus:

2192

new_client = ClientDBusTransitional.__new__(ClientDBusTransitional)

2193

tcp_server.clients[client_name] = new_client

2194

new_client.bus = bus

2195

for name, value in client.iteritems():

2196

setattr(new_client, name, value)

2197

client_object_name = unicode(client_name).translate(

2198

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

2199

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

2200

new_client.dbus_object_path = (dbus.ObjectPath

2201

("/clients/" + client_object_name))

2202

DBusObjectWithProperties.__init__(new_client,

2203

new_client.bus,

2204

new_client.dbus_object_path)

2205

else:

2206

tcp_server.clients[client_name] = Client.__new__(Client)

2207

for name, value in client.iteritems():

2208

setattr(tcp_server.clients[client_name], name, value)

2209

2210

tcp_server.clients[client_name].decrypt_secret(

2211

client_settings[client_name]["secret"])

2212

2213

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

2214

for clientname in set(old_client_settings) - set(client_settings):

2215

del tcp_server.clients[clientname]

2216

for clientname in set(client_settings) - set(old_client_settings):

2217

tcp_server.clients[clientname] = (client_class(name = clientname,

2218

config =

2219

client_settings

2220

[clientname]))

2221

2478

client["secret"] = (

2479

pgp.decrypt(client["encrypted_secret"],

2480

client_settings[client_name]

2481

["secret"]))

2482

except PGPError:

2483

# If decryption fails, we use secret from new settings

2484

logger.debug("Failed to decrypt {0} old secret"

2485

.format(client_name))

2486

client["secret"] = (

2487

client_settings[client_name]["secret"])

2488

2489

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

2490

for client_name in (set(old_client_settings)

2491

- set(client_settings)):

2492

del clients_data[client_name]

2493

for client_name in (set(client_settings)

2494

- set(old_client_settings)):

2495

clients_data[client_name] = client_settings[client_name]

2496

2497

# Create all client objects

2498

for client_name, client in clients_data.iteritems():

2499

tcp_server.clients[client_name] = client_class(

2500

name = client_name, settings = client)

2222

2501

2223

2502

if not tcp_server.clients:

2224

2503

logger.warning("No clients defined")

2225

2226

if not debug:

2227

try:

2228

with pidfile:

2229

pid = os.getpid()

2230

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

2231

del pidfile

2232

except IOError:

2233

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

2234

pidfilename, pid)

2235

except NameError:

2236

# "pidfile" was never created

2237

pass

2504

2505

if not foreground:

2506

if pidfile is not None:

2507

try:

2508

with pidfile:

2509

pid = os.getpid()

2510

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

2511

except IOError:

2512

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

2513

pidfilename, pid)

2514

del pidfile

2238

2515

del pidfilename

2239

2240

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

2241

2516

2242

2517

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

2243

2518

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

2244

2519

2245

2520

if use_dbus:

2246

class MandosDBusService(dbus.service.Object):

2521

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

2522

"se.bsnet.fukt.Mandos"})

2523

class MandosDBusService(DBusObjectWithProperties):

2247

2524

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

2248

2525

def __init__(self):

2249

2526

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

2250

2527

_interface = "se.recompile.Mandos"

2251

2528

2529

@dbus_interface_annotations(_interface)

2530

def _foo(self):

2531

return { "org.freedesktop.DBus.Property"

2532

".EmitsChangedSignal":

2533

"false"}

2534

2252

2535

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

2253

2536

def ClientAdded(self, objpath):

2254

2537

"D-Bus signal"

2296

2579

2297

2580

del _interface

2298

2581

2299

class MandosDBusServiceTransitional(MandosDBusService):

2300

__metaclass__ = AlternateDBusNamesMetaclass

2301

mandos_dbus_service = MandosDBusServiceTransitional()

2582

mandos_dbus_service = MandosDBusService()

2302

2583

2303

2584

def cleanup():

2304

2585

"Cleanup function; run on exit"

2308

2589

if not (tcp_server.clients or client_settings):

2309

2590

return

2310

2591

2311

# Store client before exiting. Secrets are encrypted with key based

2312

# on what config file has. If config file is removed/edited, old

2313

# secret will thus be unrecovable.

2314

clients = []

2315

for client in tcp_server.clients.itervalues():

2316

client.encrypt_secret(client_settings[client.name]["secret"])

2317

2318

client_dict = {}

2319

2320

# A list of attributes that will not be stored when shuting down.

2321

exclude = set(("bus", "changedstate", "secret"))

2322

for name, typ in inspect.getmembers(dbus.service.Object):

2323

exclude.add(name)

2324

2325

client_dict["encrypted_secret"] = client.encrypted_secret

2326

for attr in client.client_structure:

2327

if attr not in exclude:

2328

client_dict[attr] = getattr(client, attr)

2329

2330

clients.append(client_dict)

2331

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

2332

2592

# Store client before exiting. Secrets are encrypted with key

2593

# based on what config file has. If config file is

2594

# removed/edited, old secret will thus be unrecovable.

2595

clients = {}

2596

with PGPEngine() as pgp:

2597

for client in tcp_server.clients.itervalues():

2598

key = client_settings[client.name]["secret"]

2599

client.encrypted_secret = pgp.encrypt(client.secret,

2600

key)

2601

client_dict = {}

2602

2603

# A list of attributes that can not be pickled

2604

# + secret.

2605

exclude = set(("bus", "changedstate", "secret",

2606

"checker"))

2607

for name, typ in (inspect.getmembers

2608

(dbus.service.Object)):

2609

exclude.add(name)

2610

2611

client_dict["encrypted_secret"] = (client

2612

.encrypted_secret)

2613

for attr in client.client_structure:

2614

if attr not in exclude:

2615

client_dict[attr] = getattr(client, attr)

2616

2617

clients[client.name] = client_dict

2618

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

2619

2333

2620

try:

2334

with os.fdopen(os.open(stored_state_path, os.O_CREAT|os.O_WRONLY|os.O_TRUNC, 0600), "wb") as stored_state:

2621

with (tempfile.NamedTemporaryFile

2622

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

2623

dir=os.path.dirname(stored_state_path),

2624

delete=False)) as stored_state:

2335

2625

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

2336

except IOError as e:

2337

logger.warning("Could not save persistant state: {0}".format(e))

2338

if e.errno != errno.ENOENT:

2339

raise

2626

tempname=stored_state.name

2627

os.rename(tempname, stored_state_path)

2628

except (IOError, OSError) as e:

2629

if not debug:

2630

try:

2631

os.remove(tempname)

2632

except NameError:

2633

pass

2634

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

2635

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

2636

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

2637

else:

2638

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

2639

exc_info=e)

2640

raise e

2340

2641

2341

2642

# Delete all clients, and settings from config

2342

2643

while tcp_server.clients:

2361

2662

# Need to initiate checking of clients

2362

2663

if client.enabled:

2363

2664

client.init_checker()

2364

2365

2665

2366

2666

tcp_server.enable()

2367

2667

tcp_server.server_activate()

2370

2670

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

2371

2671

if use_ipv6:

2372

2672

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

2373

" flowinfo %d, scope_id %d"

2374

% tcp_server.socket.getsockname())

2673

" flowinfo %d, scope_id %d",

2674

*tcp_server.socket.getsockname())

2375

2675

else: # IPv4

2376

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

2377

% tcp_server.socket.getsockname())

2676

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

2677

*tcp_server.socket.getsockname())

2378

2678

2379

2679

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

2380

2680

2383

2683

try:

2384

2684

service.activate()

2385

2685

except dbus.exceptions.DBusException as error:

2386

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

2686

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

2387

2687

cleanup()

2388

2688

sys.exit(1)

2389

2689

# End of Avahi example code

2396

2696

logger.debug("Starting main loop")

2397

2697

main_loop.run()

2398

2698

except AvahiError as error:

2399

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

2699

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

2400

2700

cleanup()

2401

2701

sys.exit(1)

2402

2702

except KeyboardInterrupt:

2407

2707

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

2408

2708

cleanup()

2409

2709

2410

2411

2710

if __name__ == '__main__':

2412

2711

main()