/mandos/release : revision 237.7.381

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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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# along with this program. If not, see

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# <http://www.gnu.org/licenses/>.

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#

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# Contact the authors at <mandos@fukt.bsnet.se>.

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# Contact the authors at <mandos@recompile.se>.

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#

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from __future__ import (division, absolute_import, print_function,

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unicode_literals)

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import SocketServer as socketserver

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try:

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from future_builtins import *

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except ImportError:

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pass

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try:

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import SocketServer as socketserver

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except ImportError:

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import socketserver

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import socket

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import argparse

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import datetime

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import errno

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import gnutls.crypto

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import gnutls.connection

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import gnutls.errors

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import gnutls.library.functions

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import gnutls.library.constants

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import gnutls.library.types

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import ConfigParser as configparser

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try:

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import ConfigParser as configparser

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except ImportError:

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import configparser

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import sys

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import re

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import os

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import struct

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import fcntl

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import functools

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import cPickle as pickle

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try:

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import cPickle as pickle

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except ImportError:

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import pickle

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import multiprocessing

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import types

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import binascii

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import tempfile

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import itertools

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import collections

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import codecs

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import dbus

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import dbus.service

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import gobject

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import avahi

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from gi.repository import GLib

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from dbus.mainloop.glib import DBusGMainLoop

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import ctypes

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import ctypes.util

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except ImportError:

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SO_BINDTODEVICE = None

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version = "1.3.1"

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#logger = logging.getLogger('mandos')

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logger = logging.Logger('mandos')

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syslogger = (logging.handlers.SysLogHandler

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(facility = logging.handlers.SysLogHandler.LOG_DAEMON,

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

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syslogger.setFormatter(logging.Formatter

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

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' %(message)s'))

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logger.addHandler(syslogger)

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console = logging.StreamHandler()

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

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' %(levelname)s:'

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' %(message)s'))

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logger.addHandler(console)

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if sys.version_info.major == 2:

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str = unicode

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version = "1.7.6"

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stored_state_file = "clients.pickle"

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logger = logging.getLogger()

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syslogger = None

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try:

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if_nametoindex = ctypes.cdll.LoadLibrary(

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

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except (OSError, AttributeError):

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def if_nametoindex(interface):

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

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

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

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ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

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struct.pack(b"16s16x", interface))

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interface_index = struct.unpack("I", ifreq[16:20])[0]

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return interface_index

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def copy_function(func):

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"""Make a copy of a function"""

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if sys.version_info.major == 2:

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return types.FunctionType(func.func_code,

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func.func_globals,

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func.func_name,

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func.func_defaults,

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func.func_closure)

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else:

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return types.FunctionType(func.__code__,

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func.__globals__,

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func.__name__,

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func.__defaults__,

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func.__closure__)

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

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"""init logger and add loglevel"""

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global syslogger

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syslogger = (logging.handlers.SysLogHandler(

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facility = logging.handlers.SysLogHandler.LOG_DAEMON,

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address = "/dev/log"))

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syslogger.setFormatter(logging.Formatter

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

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' %(message)s'))

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logger.addHandler(syslogger)

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

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self.gpg = "gpg"

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try:

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output = subprocess.check_output(["gpgconf"])

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for line in output.splitlines():

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name, text, path = line.split(b":")

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if name == "gpg":

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self.gpg = path

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break

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except OSError as e:

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if e.errno != errno.ENOENT:

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raise

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self.gnupgargs = ['--batch',

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'--homedir', self.tempdir,

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'--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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encoded = b"mandos" + binascii.hexlify(password)

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if len(encoded) > 2048:

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# GnuPG can't handle long passwords, so encode differently

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encoded = (b"mandos" + password.replace(b"\\", b"\\\\")

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.replace(b"\n", b"\\n")

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.replace(b"\0", b"\\x00"))

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return encoded

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def encrypt(self, data, password):

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passphrase = self.password_encode(password)

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with tempfile.NamedTemporaryFile(

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dir=self.tempdir) as passfile:

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passfile.write(passphrase)

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passfile.flush()

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proc = subprocess.Popen([self.gpg, '--symmetric',

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'--passphrase-file',

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passfile.name]

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+ self.gnupgargs,

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stdin = subprocess.PIPE,

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stdout = subprocess.PIPE,

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stderr = subprocess.PIPE)

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ciphertext, err = proc.communicate(input = data)

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if proc.returncode != 0:

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raise PGPError(err)

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return ciphertext

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def decrypt(self, data, password):

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passphrase = self.password_encode(password)

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with tempfile.NamedTemporaryFile(

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dir = self.tempdir) as passfile:

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passfile.write(passphrase)

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passfile.flush()

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proc = subprocess.Popen([self.gpg, '--decrypt',

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'--passphrase-file',

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passfile.name]

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+ self.gnupgargs,

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stdin = subprocess.PIPE,

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stdout = subprocess.PIPE,

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stderr = subprocess.PIPE)

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decrypted_plaintext, err = proc.communicate(input = data)

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if proc.returncode != 0:

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raise PGPError(err)

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return decrypted_plaintext

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# Pretend that we have an Avahi module

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class Avahi(object):

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"""This isn't so much a class as it is a module-like namespace.

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It is instantiated once, and simulates having an Avahi module."""

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IF_UNSPEC = -1 # avahi-common/address.h

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PROTO_UNSPEC = -1 # avahi-common/address.h

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PROTO_INET = 0 # avahi-common/address.h

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PROTO_INET6 = 1 # avahi-common/address.h

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DBUS_NAME = "org.freedesktop.Avahi"

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DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"

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DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"

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DBUS_PATH_SERVER = "/"

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def string_array_to_txt_array(self, t):

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return dbus.Array((dbus.ByteArray(s.encode("utf-8"))

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for s in t), signature="ay")

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ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h

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ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h

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ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h

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SERVER_INVALID = 0 # avahi-common/defs.h

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SERVER_REGISTERING = 1 # avahi-common/defs.h

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SERVER_RUNNING = 2 # avahi-common/defs.h

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SERVER_COLLISION = 3 # avahi-common/defs.h

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SERVER_FAILURE = 4 # avahi-common/defs.h

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avahi = Avahi()

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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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super(AvahiError, self).__init__(value, *args, **kwargs)

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def __unicode__(self):

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return unicode(repr(self.value))

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return super(AvahiError, self).__init__(value, *args,

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**kwargs)

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class AvahiServiceError(AvahiError):

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pass

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class AvahiGroupError(AvahiError):

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pass

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Used to optionally bind to the specified interface.

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name: string; Example: 'Mandos'

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

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

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See <https://www.iana.org/assignments/service-names-port-numbers>

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port: integer; what port to announce

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TXT: list of strings; TXT record for the service

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domain: string; Domain to publish on, default to .local if empty.

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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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protocol = avahi.PROTO_UNSPEC, bus = None):

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def __init__(self,

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interface = avahi.IF_UNSPEC,

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name = None,

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servicetype = None,

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port = None,

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TXT = None,

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domain = "",

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host = "",

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max_renames = 32768,

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protocol = avahi.PROTO_UNSPEC,

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bus = None):

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self.interface = interface

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self.name = name

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self.type = servicetype

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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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def rename(self, remove=True):

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

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if self.rename_count >= self.max_renames:

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

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" after %i retries, exiting.",

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self.rename_count)

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raise AvahiServiceError("Too many renames")

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

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self.name = str(

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self.server.GetAlternativeServiceName(self.name))

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self.rename_count += 1

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

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self.name)

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syslogger.setFormatter(logging.Formatter

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

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

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% self.name))

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self.remove()

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if remove:

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self.remove()

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try:

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self.add()

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except dbus.exceptions.DBusException as error:

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

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self.cleanup()

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os._exit(1)

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self.rename_count += 1

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if (error.get_dbus_name()

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== "org.freedesktop.Avahi.CollisionError"):

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

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return self.rename(remove=False)

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else:

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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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def remove(self):

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

180

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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

183

374

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"""

187

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self.remove()

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avahi.DBUS_INTERFACE_ENTRY_GROUP)

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self.entry_group_state_changed_match = (

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self.group.connect_to_signal(

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'StateChanged', self .entry_group_state_changed))

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'StateChanged', self.entry_group_state_changed))

196

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

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self.name, self.type)

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self.group.AddService(

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dbus.UInt16(self.port),

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avahi.string_array_to_txt_array(self.TXT))

206

398

self.group.Commit()

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def entry_group_state_changed(self, state, error):

208

401

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

209

402

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

215

408

self.rename()

216

409

elif state == avahi.ENTRY_GROUP_FAILURE:

217

410

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

218

unicode(error))

219

raise AvahiGroupError("State changed: %s"

220

% unicode(error))

411

str(error))

412

raise AvahiGroupError("State changed: {!s}".format(error))

413

221

414

def cleanup(self):

222

415

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

223

416

if self.group is not None:

224

417

try:

225

418

self.group.Free()

226

419

except (dbus.exceptions.UnknownMethodException,

227

dbus.exceptions.DBusException) as e:

420

dbus.exceptions.DBusException):

228

421

pass

229

422

self.group = None

230

423

self.remove()

424

231

425

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

232

426

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

233

427

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

234

bad_states = { avahi.SERVER_INVALID:

235

"Zeroconf server invalid",

236

avahi.SERVER_REGISTERING: None,

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avahi.SERVER_COLLISION:

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"Zeroconf server name collision",

239

avahi.SERVER_FAILURE:

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"Zeroconf server failure" }

428

bad_states = {

429

avahi.SERVER_INVALID: "Zeroconf server invalid",

430

avahi.SERVER_REGISTERING: None,

431

avahi.SERVER_COLLISION: "Zeroconf server name collision",

432

avahi.SERVER_FAILURE: "Zeroconf server failure",

433

}

241

434

if state in bad_states:

242

435

if bad_states[state] is not None:

243

436

if error is None:

246

439

logger.error(bad_states[state] + ": %r", error)

247

440

self.cleanup()

248

441

elif state == avahi.SERVER_RUNNING:

249

self.add()

442

try:

443

self.add()

444

except dbus.exceptions.DBusException as error:

445

if (error.get_dbus_name()

446

== "org.freedesktop.Avahi.CollisionError"):

447

logger.info("Local Zeroconf service name"

448

" collision.")

449

return self.rename(remove=False)

450

else:

451

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

452

self.cleanup()

453

os._exit(1)

250

454

else:

251

455

if error is None:

252

456

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

253

457

else:

254

458

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

459

255

460

def activate(self):

256

461

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

257

462

if self.server is None:

261

466

follow_name_owner_changes=True),

262

467

avahi.DBUS_INTERFACE_SERVER)

263

468

self.server.connect_to_signal("StateChanged",

264

self.server_state_changed)

469

self.server_state_changed)

265

470

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

266

471

267

472

268

def _timedelta_to_milliseconds(td):

269

"Convert a datetime.timedelta() to milliseconds"

270

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

271

+ (td.seconds * 1000)

272

+ (td.microseconds // 1000))

273

473

class AvahiServiceToSyslog(AvahiService):

474

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

475

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

476

ret = AvahiService.rename(self, *args, **kwargs)

477

syslogger.setFormatter(logging.Formatter(

478

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

479

.format(self.name)))

480

return ret

481

482

# Pretend that we have a GnuTLS module

483

class GnuTLS(object):

484

"""This isn't so much a class as it is a module-like namespace.

485

It is instantiated once, and simulates having a GnuTLS module."""

486

487

_library = ctypes.cdll.LoadLibrary(

488

ctypes.util.find_library("gnutls"))

489

_need_version = b"3.3.0"

490

def __init__(self):

491

# Need to use class name "GnuTLS" here, since this method is

492

# called before the assignment to the "gnutls" global variable

493

# happens.

494

if GnuTLS.check_version(self._need_version) is None:

495

raise GnuTLS.Error("Needs GnuTLS {} or later"

496

.format(self._need_version))

497

498

# Unless otherwise indicated, the constants and types below are

499

# all from the gnutls/gnutls.h C header file.

500

501

# Constants

502

E_SUCCESS = 0

503

E_INTERRUPTED = -52

504

E_AGAIN = -28

505

CRT_OPENPGP = 2

506

CLIENT = 2

507

SHUT_RDWR = 0

508

CRD_CERTIFICATE = 1

509

E_NO_CERTIFICATE_FOUND = -49

510

OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h

511

512

# Types

513

class session_int(ctypes.Structure):

514

_fields_ = []

515

session_t = ctypes.POINTER(session_int)

516

class certificate_credentials_st(ctypes.Structure):

517

_fields_ = []

518

certificate_credentials_t = ctypes.POINTER(

519

certificate_credentials_st)

520

certificate_type_t = ctypes.c_int

521

class datum_t(ctypes.Structure):

522

_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),

523

('size', ctypes.c_uint)]

524

class openpgp_crt_int(ctypes.Structure):

525

_fields_ = []

526

openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)

527

openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h

528

log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)

529

credentials_type_t = ctypes.c_int

530

transport_ptr_t = ctypes.c_void_p

531

close_request_t = ctypes.c_int

532

533

# Exceptions

534

class Error(Exception):

535

# We need to use the class name "GnuTLS" here, since this

536

# exception might be raised from within GnuTLS.__init__,

537

# which is called before the assignment to the "gnutls"

538

# global variable has happened.

539

def __init__(self, message = None, code = None, args=()):

540

# Default usage is by a message string, but if a return

541

# code is passed, convert it to a string with

542

# gnutls.strerror()

543

self.code = code

544

if message is None and code is not None:

545

message = GnuTLS.strerror(code)

546

return super(GnuTLS.Error, self).__init__(

547

message, *args)

548

549

class CertificateSecurityError(Error):

550

pass

551

552

# Classes

553

class Credentials(object):

554

def __init__(self):

555

self._c_object = gnutls.certificate_credentials_t()

556

gnutls.certificate_allocate_credentials(

557

ctypes.byref(self._c_object))

558

self.type = gnutls.CRD_CERTIFICATE

559

560

def __del__(self):

561

gnutls.certificate_free_credentials(self._c_object)

562

563

class ClientSession(object):

564

def __init__(self, socket, credentials = None):

565

self._c_object = gnutls.session_t()

566

gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)

567

gnutls.set_default_priority(self._c_object)

568

gnutls.transport_set_ptr(self._c_object, socket.fileno())

569

gnutls.handshake_set_private_extensions(self._c_object,

570

True)

571

self.socket = socket

572

if credentials is None:

573

credentials = gnutls.Credentials()

574

gnutls.credentials_set(self._c_object, credentials.type,

575

ctypes.cast(credentials._c_object,

576

ctypes.c_void_p))

577

self.credentials = credentials

578

579

def __del__(self):

580

gnutls.deinit(self._c_object)

581

582

def handshake(self):

583

return gnutls.handshake(self._c_object)

584

585

def send(self, data):

586

data = bytes(data)

587

data_len = len(data)

588

while data_len > 0:

589

data_len -= gnutls.record_send(self._c_object,

590

data[-data_len:],

591

data_len)

592

593

def bye(self):

594

return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)

595

596

# Error handling functions

597

def _error_code(result):

598

"""A function to raise exceptions on errors, suitable

599

for the 'restype' attribute on ctypes functions"""

600

if result >= 0:

601

return result

602

if result == gnutls.E_NO_CERTIFICATE_FOUND:

603

raise gnutls.CertificateSecurityError(code = result)

604

raise gnutls.Error(code = result)

605

606

def _retry_on_error(result, func, arguments):

607

"""A function to retry on some errors, suitable

608

for the 'errcheck' attribute on ctypes functions"""

609

while result < 0:

610

if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):

611

return _error_code(result)

612

result = func(*arguments)

613

return result

614

615

# Unless otherwise indicated, the function declarations below are

616

# all from the gnutls/gnutls.h C header file.

617

618

# Functions

619

priority_set_direct = _library.gnutls_priority_set_direct

620

priority_set_direct.argtypes = [session_t, ctypes.c_char_p,

621

ctypes.POINTER(ctypes.c_char_p)]

622

priority_set_direct.restype = _error_code

623

624

init = _library.gnutls_init

625

init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]

626

init.restype = _error_code

627

628

set_default_priority = _library.gnutls_set_default_priority

629

set_default_priority.argtypes = [session_t]

630

set_default_priority.restype = _error_code

631

632

record_send = _library.gnutls_record_send

633

record_send.argtypes = [session_t, ctypes.c_void_p,

634

ctypes.c_size_t]

635

record_send.restype = ctypes.c_ssize_t

636

record_send.errcheck = _retry_on_error

637

638

certificate_allocate_credentials = (

639

_library.gnutls_certificate_allocate_credentials)

640

certificate_allocate_credentials.argtypes = [

641

ctypes.POINTER(certificate_credentials_t)]

642

certificate_allocate_credentials.restype = _error_code

643

644

certificate_free_credentials = (

645

_library.gnutls_certificate_free_credentials)

646

certificate_free_credentials.argtypes = [certificate_credentials_t]

647

certificate_free_credentials.restype = None

648

649

handshake_set_private_extensions = (

650

_library.gnutls_handshake_set_private_extensions)

651

handshake_set_private_extensions.argtypes = [session_t,

652

ctypes.c_int]

653

handshake_set_private_extensions.restype = None

654

655

credentials_set = _library.gnutls_credentials_set

656

credentials_set.argtypes = [session_t, credentials_type_t,

657

ctypes.c_void_p]

658

credentials_set.restype = _error_code

659

660

strerror = _library.gnutls_strerror

661

strerror.argtypes = [ctypes.c_int]

662

strerror.restype = ctypes.c_char_p

663

664

certificate_type_get = _library.gnutls_certificate_type_get

665

certificate_type_get.argtypes = [session_t]

666

certificate_type_get.restype = _error_code

667

668

certificate_get_peers = _library.gnutls_certificate_get_peers

669

certificate_get_peers.argtypes = [session_t,

670

ctypes.POINTER(ctypes.c_uint)]

671

certificate_get_peers.restype = ctypes.POINTER(datum_t)

672

673

global_set_log_level = _library.gnutls_global_set_log_level

674

global_set_log_level.argtypes = [ctypes.c_int]

675

global_set_log_level.restype = None

676

677

global_set_log_function = _library.gnutls_global_set_log_function

678

global_set_log_function.argtypes = [log_func]

679

global_set_log_function.restype = None

680

681

deinit = _library.gnutls_deinit

682

deinit.argtypes = [session_t]

683

deinit.restype = None

684

685

handshake = _library.gnutls_handshake

686

handshake.argtypes = [session_t]

687

handshake.restype = _error_code

688

handshake.errcheck = _retry_on_error

689

690

transport_set_ptr = _library.gnutls_transport_set_ptr

691

transport_set_ptr.argtypes = [session_t, transport_ptr_t]

692

transport_set_ptr.restype = None

693

694

bye = _library.gnutls_bye

695

bye.argtypes = [session_t, close_request_t]

696

bye.restype = _error_code

697

bye.errcheck = _retry_on_error

698

699

check_version = _library.gnutls_check_version

700

check_version.argtypes = [ctypes.c_char_p]

701

check_version.restype = ctypes.c_char_p

702

703

# All the function declarations below are from gnutls/openpgp.h

704

705

openpgp_crt_init = _library.gnutls_openpgp_crt_init

706

openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]

707

openpgp_crt_init.restype = _error_code

708

709

openpgp_crt_import = _library.gnutls_openpgp_crt_import

710

openpgp_crt_import.argtypes = [openpgp_crt_t,

711

ctypes.POINTER(datum_t),

712

openpgp_crt_fmt_t]

713

openpgp_crt_import.restype = _error_code

714

715

openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self

716

openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,

717

ctypes.POINTER(ctypes.c_uint)]

718

openpgp_crt_verify_self.restype = _error_code

719

720

openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit

721

openpgp_crt_deinit.argtypes = [openpgp_crt_t]

722

openpgp_crt_deinit.restype = None

723

724

openpgp_crt_get_fingerprint = (

725

_library.gnutls_openpgp_crt_get_fingerprint)

726

openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,

727

ctypes.c_void_p,

728

ctypes.POINTER(

729

ctypes.c_size_t)]

730

openpgp_crt_get_fingerprint.restype = _error_code

731

732

# Remove non-public functions

733

del _error_code, _retry_on_error

734

# Create the global "gnutls" object, simulating a module

735

gnutls = GnuTLS()

736

737

def call_pipe(connection, # : multiprocessing.Connection

738

func, *args, **kwargs):

739

"""This function is meant to be called by multiprocessing.Process

740

741

This function runs func(*args, **kwargs), and writes the resulting

742

return value on the provided multiprocessing.Connection.

743

"""

744

connection.send(func(*args, **kwargs))

745

connection.close()

746

274

747

class Client(object):

275

748

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

276

749

277

750

Attributes:

278

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

751

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

279

752

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

280

753

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

281

754

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

282

755

to see if the client lives.

283

756

'None' if no process is running.

284

checker_callback_tag: a gobject event source tag, or None

757

checker_callback_tag: a GLib event source tag, or None

285

758

checker_command: string; External command which is run to check

286

759

if client lives. %() expansions are done at

287

760

runtime with vars(self) as dict, so that for

288

761

instance %(name)s can be used in the command.

289

checker_initiator_tag: a gobject event source tag, or None

762

checker_initiator_tag: a GLib event source tag, or None

290

763

created: datetime.datetime(); (UTC) object creation

764

client_structure: Object describing what attributes a client has

765

and is used for storing the client at exit

291

766

current_checker_command: string; current running checker_command

292

disable_hook: If set, called by disable() as disable_hook(self)

293

disable_initiator_tag: a gobject event source tag, or None

767

disable_initiator_tag: a GLib event source tag, or None

294

768

enabled: bool()

295

769

fingerprint: string (40 or 32 hexadecimal digits); used to

296

770

uniquely identify the client

298

772

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

299

773

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

300

774

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

301

last_enabled: datetime.datetime(); (UTC)

775

last_checker_status: integer between 0 and 255 reflecting exit

776

status of last checker. -1 reflects crashed

777

checker, -2 means no checker completed yet.

778

last_checker_signal: The signal which killed the last checker, if

779

last_checker_status is -1

780

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

302

781

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

303

782

D-Bus identifiers

304

783

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

305

784

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

306

785

until this client is disabled

307

extended_timeout: extra long timeout when password has been sent

786

extended_timeout: extra long timeout when secret has been sent

308

787

runtime_expansions: Allowed attributes for runtime expansion.

309

788

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

310

789

disabled, or None

790

server_settings: The server_settings dict from main()

311

791

"""

312

792

313

793

runtime_expansions = ("approval_delay", "approval_duration",

314

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

315

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

794

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

795

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

796

"last_approval_request", "last_checked_ok",

316

797

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

317

318

def timeout_milliseconds(self):

319

"Return the 'timeout' attribute in milliseconds"

320

return _timedelta_to_milliseconds(self.timeout)

321

322

def extended_timeout_milliseconds(self):

323

"Return the 'extended_timeout' attribute in milliseconds"

324

return _timedelta_to_milliseconds(self.extended_timeout)

325

326

def interval_milliseconds(self):

327

"Return the 'interval' attribute in milliseconds"

328

return _timedelta_to_milliseconds(self.interval)

329

330

def approval_delay_milliseconds(self):

331

return _timedelta_to_milliseconds(self.approval_delay)

332

333

def __init__(self, name = None, disable_hook=None, config=None):

334

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

335

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

336

attribute."""

798

client_defaults = {

799

"timeout": "PT5M",

800

"extended_timeout": "PT15M",

801

"interval": "PT2M",

802

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

803

"host": "",

804

"approval_delay": "PT0S",

805

"approval_duration": "PT1S",

806

"approved_by_default": "True",

807

"enabled": "True",

808

}

809

810

@staticmethod

811

def config_parser(config):

812

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

813

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

814

with exceptions for any special settings as defined above.

815

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

816

value given the same arguments.

817

"""

818

settings = {}

819

for client_name in config.sections():

820

section = dict(config.items(client_name))

821

client = settings[client_name] = {}

822

823

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

824

# Reformat values from string types to Python types

825

client["approved_by_default"] = config.getboolean(

826

client_name, "approved_by_default")

827

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

828

"enabled")

829

830

# Uppercase and remove spaces from fingerprint for later

831

# comparison purposes with return value from the

832

# fingerprint() function

833

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

834

.replace(" ", ""))

835

if "secret" in section:

836

client["secret"] = codecs.decode(section["secret"]

837

.encode("utf-8"),

838

"base64")

839

elif "secfile" in section:

840

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

841

(section["secfile"])),

842

"rb") as secfile:

843

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

844

else:

845

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

846

.format(section))

847

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

848

client["extended_timeout"] = string_to_delta(

849

section["extended_timeout"])

850

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

851

client["approval_delay"] = string_to_delta(

852

section["approval_delay"])

853

client["approval_duration"] = string_to_delta(

854

section["approval_duration"])

855

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

856

client["last_approval_request"] = None

857

client["last_checked_ok"] = None

858

client["last_checker_status"] = -2

859

860

return settings

861

862

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

337

863

self.name = name

338

if config is None:

339

config = {}

864

if server_settings is None:

865

server_settings = {}

866

self.server_settings = server_settings

867

# adding all client settings

868

for setting, value in settings.items():

869

setattr(self, setting, value)

870

871

if self.enabled:

872

if not hasattr(self, "last_enabled"):

873

self.last_enabled = datetime.datetime.utcnow()

874

if not hasattr(self, "expires"):

875

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

876

+ self.timeout)

877

else:

878

self.last_enabled = None

879

self.expires = None

880

340

881

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

341

# Uppercase and remove spaces from fingerprint for later

342

# comparison purposes with return value from the fingerprint()

343

# function

344

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

345

.replace(" ", ""))

346

882

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

347

if "secret" in config:

348

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

349

elif "secfile" in config:

350

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

351

(config["secfile"])),

352

"rb") as secfile:

353

self.secret = secfile.read()

354

else:

355

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

356

% self.name)

357

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

358

self.created = datetime.datetime.utcnow()

359

self.enabled = False

360

self.last_approval_request = None

361

self.last_enabled = None

362

self.last_checked_ok = None

363

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

364

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

365

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

366

self.disable_hook = disable_hook

883

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

884

datetime.datetime.utcnow())

885

886

# attributes specific for this server instance

367

887

self.checker = None

368

888

self.checker_initiator_tag = None

369

889

self.disable_initiator_tag = None

370

self.expires = None

371

890

self.checker_callback_tag = None

372

self.checker_command = config["checker"]

373

891

self.current_checker_command = None

374

self.last_connect = None

375

self._approved = None

376

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

377

True)

892

self.approved = None

378

893

self.approvals_pending = 0

379

self.approval_delay = string_to_delta(

380

config["approval_delay"])

381

self.approval_duration = string_to_delta(

382

config["approval_duration"])

383

self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())

894

self.changedstate = multiprocessing_manager.Condition(

895

multiprocessing_manager.Lock())

896

self.client_structure = [attr

897

for attr in self.__dict__.keys()

898

if not attr.startswith("_")]

899

self.client_structure.append("client_structure")

900

901

for name, t in inspect.getmembers(

902

type(self), lambda obj: isinstance(obj, property)):

903

if not name.startswith("_"):

904

self.client_structure.append(name)

384

905

906

# Send notice to process children that client state has changed

385

907

def send_changedstate(self):

386

self.changedstate.acquire()

387

self.changedstate.notify_all()

388

self.changedstate.release()

389

908

with self.changedstate:

909

self.changedstate.notify_all()

910

390

911

def enable(self):

391

912

"""Start this client's checker and timeout hooks"""

392

913

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

393

914

# Already enabled

394

915

return

395

self.send_changedstate()

396

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

397

# and every interval from then on.

398

self.checker_initiator_tag = (gobject.timeout_add

399

(self.interval_milliseconds(),

400

self.start_checker))

401

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

402

916

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

403

self.disable_initiator_tag = (gobject.timeout_add

404

(self.timeout_milliseconds(),

405

self.disable))

406

917

self.enabled = True

407

918

self.last_enabled = datetime.datetime.utcnow()

408

# Also start a new checker *right now*.

409

self.start_checker()

919

self.init_checker()

920

self.send_changedstate()

410

921

411

922

def disable(self, quiet=True):

412

923

"""Disable this client."""

413

924

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

414

925

return False

415

926

if not quiet:

416

self.send_changedstate()

417

if not quiet:

418

927

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

419

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

420

gobject.source_remove(self.disable_initiator_tag)

928

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

929

GLib.source_remove(self.disable_initiator_tag)

421

930

self.disable_initiator_tag = None

422

931

self.expires = None

423

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

424

gobject.source_remove(self.checker_initiator_tag)

932

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

933

GLib.source_remove(self.checker_initiator_tag)

425

934

self.checker_initiator_tag = None

426

935

self.stop_checker()

427

if self.disable_hook:

428

self.disable_hook(self)

429

936

self.enabled = False

430

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

937

if not quiet:

938

self.send_changedstate()

939

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

431

940

return False

432

941

433

942

def __del__(self):

434

self.disable_hook = None

435

943

self.disable()

436

944

437

def checker_callback(self, pid, condition, command):

945

def init_checker(self):

946

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

947

# and every interval from then on.

948

if self.checker_initiator_tag is not None:

949

GLib.source_remove(self.checker_initiator_tag)

950

self.checker_initiator_tag = GLib.timeout_add(

951

int(self.interval.total_seconds() * 1000),

952

self.start_checker)

953

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

954

if self.disable_initiator_tag is not None:

955

GLib.source_remove(self.disable_initiator_tag)

956

self.disable_initiator_tag = GLib.timeout_add(

957

int(self.timeout.total_seconds() * 1000), self.disable)

958

# Also start a new checker *right now*.

959

self.start_checker()

960

961

def checker_callback(self, source, condition, connection,

962

command):

438

963

"""The checker has completed, so take appropriate actions."""

439

964

self.checker_callback_tag = None

440

965

self.checker = None

441

if os.WIFEXITED(condition):

442

exitstatus = os.WEXITSTATUS(condition)

443

if exitstatus == 0:

966

# Read return code from connection (see call_pipe)

967

returncode = connection.recv()

968

connection.close()

969

970

if returncode >= 0:

971

self.last_checker_status = returncode

972

self.last_checker_signal = None

973

if self.last_checker_status == 0:

444

974

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

445

975

vars(self))

446

976

self.checked_ok()

447

977

else:

448

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

449

vars(self))

978

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

450

979

else:

980

self.last_checker_status = -1

981

self.last_checker_signal = -returncode

451

982

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

452

983

vars(self))

453

454

def checked_ok(self, timeout=None):

455

"""Bump up the timeout for this client.

456

457

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

458

alive and well.

459

"""

984

return False

985

986

def checked_ok(self):

987

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

988

self.last_checked_ok = datetime.datetime.utcnow()

989

self.last_checker_status = 0

990

self.last_checker_signal = None

991

self.bump_timeout()

992

993

def bump_timeout(self, timeout=None):

994

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

460

995

if timeout is None:

461

996

timeout = self.timeout

462

self.last_checked_ok = datetime.datetime.utcnow()

463

gobject.source_remove(self.disable_initiator_tag)

464

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

465

self.disable_initiator_tag = (gobject.timeout_add

466

(_timedelta_to_milliseconds(timeout),

467

self.disable))

997

if self.disable_initiator_tag is not None:

998

GLib.source_remove(self.disable_initiator_tag)

999

self.disable_initiator_tag = None

1000

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

1001

self.disable_initiator_tag = GLib.timeout_add(

1002

int(timeout.total_seconds() * 1000), self.disable)

1003

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

468

1004

469

1005

def need_approval(self):

470

1006

self.last_approval_request = datetime.datetime.utcnow()

475

1011

If a checker already exists, leave it running and do

476

1012

nothing."""

477

1013

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

478

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

479

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

480

# client would inevitably timeout, since no checker would get

481

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

1014

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

1015

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

1016

# would inevitably timeout, since no checker would get a

1017

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

482

1018

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

483

1019

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

484

1020

# should be.

485

1021

486

# If a checker exists, make sure it is not a zombie

487

try:

488

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

489

except (AttributeError, OSError) as error:

490

if (isinstance(error, OSError)

491

and error.errno != errno.ECHILD):

492

raise error

493

else:

494

if pid:

495

logger.warning("Checker was a zombie")

496

gobject.source_remove(self.checker_callback_tag)

497

self.checker_callback(pid, status,

498

self.current_checker_command)

1022

if self.checker is not None and not self.checker.is_alive():

1023

logger.warning("Checker was not alive; joining")

1024

self.checker.join()

1025

self.checker = None

499

1026

# Start a new checker if needed

500

1027

if self.checker is None:

1028

# Escape attributes for the shell

1029

escaped_attrs = {

1030

attr: re.escape(str(getattr(self, attr)))

1031

for attr in self.runtime_expansions }

501

1032

try:

502

# In case checker_command has exactly one % operator

503

command = self.checker_command % self.host

504

except TypeError:

505

# Escape attributes for the shell

506

escaped_attrs = dict(

507

(attr,

508

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

509

errors=

510

'replace')))

511

for attr in

512

self.runtime_expansions)

513

514

try:

515

command = self.checker_command % escaped_attrs

516

except TypeError as error:

517

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

518

' %s', self.checker_command, error)

519

return True # Try again later

1033

command = self.checker_command % escaped_attrs

1034

except TypeError as error:

1035

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

1036

self.checker_command,

1037

exc_info=error)

1038

return True # Try again later

520

1039

self.current_checker_command = command

521

try:

522

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

523

command, self.name)

524

# We don't need to redirect stdout and stderr, since

525

# in normal mode, that is already done by daemon(),

526

# and in debug mode we don't want to. (Stdin is

527

# always replaced by /dev/null.)

528

self.checker = subprocess.Popen(command,

529

close_fds=True,

530

shell=True, cwd="/")

531

self.checker_callback_tag = (gobject.child_watch_add

532

(self.checker.pid,

533

self.checker_callback,

534

data=command))

535

# The checker may have completed before the gobject

536

# watch was added. Check for this.

537

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

538

if pid:

539

gobject.source_remove(self.checker_callback_tag)

540

self.checker_callback(pid, status, command)

541

except OSError as error:

542

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

543

error)

544

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

1040

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

1041

self.name)

1042

# We don't need to redirect stdout and stderr, since

1043

# in normal mode, that is already done by daemon(),

1044

# and in debug mode we don't want to. (Stdin is

1045

# always replaced by /dev/null.)

1046

# The exception is when not debugging but nevertheless

1047

# running in the foreground; use the previously

1048

# created wnull.

1049

popen_args = { "close_fds": True,

1050

"shell": True,

1051

"cwd": "/" }

1052

if (not self.server_settings["debug"]

1053

and self.server_settings["foreground"]):

1054

popen_args.update({"stdout": wnull,

1055

"stderr": wnull })

1056

pipe = multiprocessing.Pipe(duplex = False)

1057

self.checker = multiprocessing.Process(

1058

target = call_pipe,

1059

args = (pipe[1], subprocess.call, command),

1060

kwargs = popen_args)

1061

self.checker.start()

1062

self.checker_callback_tag = GLib.io_add_watch(

1063

pipe[0].fileno(), GLib.IO_IN,

1064

self.checker_callback, pipe[0], command)

1065

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

545

1066

return True

546

1067

547

1068

def stop_checker(self):

548

1069

"""Force the checker process, if any, to stop."""

549

1070

if self.checker_callback_tag:

550

gobject.source_remove(self.checker_callback_tag)

1071

GLib.source_remove(self.checker_callback_tag)

551

1072

self.checker_callback_tag = None

552

1073

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

553

1074

return

554

1075

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

555

try:

556

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

557

#time.sleep(0.5)

558

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

559

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

560

except OSError as error:

561

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

562

raise

1076

self.checker.terminate()

563

1077

self.checker = None

564

1078

565

1079

566

def dbus_service_property(dbus_interface, signature="v",

567

access="readwrite", byte_arrays=False):

1080

def dbus_service_property(dbus_interface,

1081

signature="v",

1082

access="readwrite",

1083

byte_arrays=False):

568

1084

"""Decorators for marking methods of a DBusObjectWithProperties to

569

1085

become properties on the D-Bus.

570

1086

579

1095

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

580

1096

if byte_arrays and signature != "ay":

581

1097

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

582

" signature %r" % signature)

1098

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

1099

583

1100

def decorator(func):

584

1101

func._dbus_is_property = True

585

1102

func._dbus_interface = dbus_interface

590

1107

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

591

1108

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

592

1109

return func

1110

1111

return decorator

1112

1113

1114

def dbus_interface_annotations(dbus_interface):

1115

"""Decorator for marking functions returning interface annotations

1116

1117

Usage:

1118

1119

@dbus_interface_annotations("org.example.Interface")

1120

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

1121

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

1122

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

1123

"false"}

1124

"""

1125

1126

def decorator(func):

1127

func._dbus_is_interface = True

1128

func._dbus_interface = dbus_interface

1129

func._dbus_name = dbus_interface

1130

return func

1131

1132

return decorator

1133

1134

1135

def dbus_annotations(annotations):

1136

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

1137

Usage:

1138

1139

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

1140

"org.freedesktop.DBus.Property."

1141

"EmitsChangedSignal": "false"})

1142

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

1143

access="r")

1144

def Property_dbus_property(self):

1145

return dbus.Boolean(False)

1146

1147

See also the DBusObjectWithAnnotations class.

1148

"""

1149

1150

def decorator(func):

1151

func._dbus_annotations = annotations

1152

return func

1153

593

1154

return decorator

594

1155

595

1156

596

1157

class DBusPropertyException(dbus.exceptions.DBusException):

597

1158

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

598

1159

"""

599

def __unicode__(self):

600

return unicode(str(self))

1160

pass

601

1161

602

1162

603

1163

class DBusPropertyAccessException(DBusPropertyException):

612

1172

pass

613

1173

614

1174

615

class DBusObjectWithProperties(dbus.service.Object):

1175

class DBusObjectWithAnnotations(dbus.service.Object):

1176

"""A D-Bus object with annotations.

1177

1178

Classes inheriting from this can use the dbus_annotations

1179

decorator to add annotations to methods or signals.

1180

"""

1181

1182

@staticmethod

1183

def _is_dbus_thing(thing):

1184

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

1185

1186

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

1187

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

1188

"""

1189

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

1190

False)

1191

1192

def _get_all_dbus_things(self, thing):

1193

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

1194

"""

1195

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

1196

athing.__get__(self))

1197

for cls in self.__class__.__mro__

1198

for name, athing in

1199

inspect.getmembers(cls, self._is_dbus_thing(thing)))

1200

1201

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1202

out_signature = "s",

1203

path_keyword = 'object_path',

1204

connection_keyword = 'connection')

1205

def Introspect(self, object_path, connection):

1206

"""Overloading of standard D-Bus method.

1207

1208

Inserts annotation tags on methods and signals.

1209

"""

1210

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

1211

connection)

1212

try:

1213

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

1214

1215

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

1216

# Add annotation tags

1217

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

1218

for tag in if_tag.getElementsByTagName(typ):

1219

annots = dict()

1220

for name, prop in (self.

1221

_get_all_dbus_things(typ)):

1222

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

1223

and prop._dbus_interface

1224

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

1225

annots.update(getattr(

1226

prop, "_dbus_annotations", {}))

1227

for name, value in annots.items():

1228

ann_tag = document.createElement(

1229

"annotation")

1230

ann_tag.setAttribute("name", name)

1231

ann_tag.setAttribute("value", value)

1232

tag.appendChild(ann_tag)

1233

# Add interface annotation tags

1234

for annotation, value in dict(

1235

itertools.chain.from_iterable(

1236

annotations().items()

1237

for name, annotations

1238

in self._get_all_dbus_things("interface")

1239

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

1240

)).items():

1241

ann_tag = document.createElement("annotation")

1242

ann_tag.setAttribute("name", annotation)

1243

ann_tag.setAttribute("value", value)

1244

if_tag.appendChild(ann_tag)

1245

# Fix argument name for the Introspect method itself

1246

if (if_tag.getAttribute("name")

1247

== dbus.INTROSPECTABLE_IFACE):

1248

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

1249

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

1250

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

1251

if (arg.getAttribute("direction")

1252

== "out"):

1253

arg.setAttribute("name",

1254

"xml_data")

1255

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

1256

document.unlink()

1257

except (AttributeError, xml.dom.DOMException,

1258

xml.parsers.expat.ExpatError) as error:

1259

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

1260

exc_info=error)

1261

return xmlstring

1262

1263

1264

class DBusObjectWithProperties(DBusObjectWithAnnotations):

616

1265

"""A D-Bus object with properties.

617

1266

618

1267

Classes inheriting from this can use the dbus_service_property

620

1269

standard Get(), Set(), and GetAll() methods on the D-Bus.

621

1270

"""

622

1271

623

@staticmethod

624

def _is_dbus_property(obj):

625

return getattr(obj, "_dbus_is_property", False)

626

627

def _get_all_dbus_properties(self):

628

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

629

"""

630

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

631

for cls in self.__class__.__mro__

632

for name, prop in inspect.getmembers(cls, self._is_dbus_property))

633

634

1272

def _get_dbus_property(self, interface_name, property_name):

635

1273

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

636

1274

property with the specified name and interface.

637

1275

"""

638

for cls in self.__class__.__mro__:

639

for name, value in inspect.getmembers(cls, self._is_dbus_property):

640

if value._dbus_name == property_name and value._dbus_interface == interface_name:

1276

for cls in self.__class__.__mro__:

1277

for name, value in inspect.getmembers(

1278

cls, self._is_dbus_thing("property")):

1279

if (value._dbus_name == property_name

1280

and value._dbus_interface == interface_name):

641

1281

return value.__get__(self)

642

1282

643

1283

# No such property

644

raise DBusPropertyNotFound(self.dbus_object_path + ":"

645

+ interface_name + "."

646

+ property_name)

647

648

649

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

1284

raise DBusPropertyNotFound("{}:{}.{}".format(

1285

self.dbus_object_path, interface_name, property_name))

1286

1287

@classmethod

1288

def _get_all_interface_names(cls):

1289

"""Get a sequence of all interfaces supported by an object"""

1290

return (name for name in set(getattr(getattr(x, attr),

1291

"_dbus_interface", None)

1292

for x in (inspect.getmro(cls))

1293

for attr in dir(x))

1294

if name is not None)

1295

1296

@dbus.service.method(dbus.PROPERTIES_IFACE,

1297

in_signature="ss",

650

1298

out_signature="v")

651

1299

def Get(self, interface_name, property_name):

652

1300

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

670

1318

# The byte_arrays option is not supported yet on

671

1319

# signatures other than "ay".

672

1320

if prop._dbus_signature != "ay":

673

raise ValueError

674

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

675

for byte in value))

1321

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

1322

"'ay' signature {!r}"

1323

.format(prop._dbus_signature))

1324

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

1325

for byte in value))

676

1326

prop(value)

677

1327

678

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

1328

@dbus.service.method(dbus.PROPERTIES_IFACE,

1329

in_signature="s",

679

1330

out_signature="a{sv}")

680

1331

def GetAll(self, interface_name):

681

1332

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

683

1334

684

1335

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

685

1336

"""

686

all = {}

687

for name, prop in self._get_all_dbus_properties():

1337

properties = {}

1338

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

688

1339

if (interface_name

689

1340

and interface_name != prop._dbus_interface):

690

1341

# Interface non-empty but did not match

694

1345

continue

695

1346

value = prop()

696

1347

if not hasattr(value, "variant_level"):

697

all[name] = value

1348

properties[name] = value

698

1349

continue

699

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

700

value.variant_level+1)

701

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

1350

properties[name] = type(value)(

1351

value, variant_level = value.variant_level + 1)

1352

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

1353

1354

@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")

1355

def PropertiesChanged(self, interface_name, changed_properties,

1356

invalidated_properties):

1357

"""Standard D-Bus PropertiesChanged() signal, see D-Bus

1358

standard.

1359

"""

1360

pass

702

1361

703

1362

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

704

1363

out_signature="s",

705

1364

path_keyword='object_path',

706

1365

connection_keyword='connection')

707

1366

def Introspect(self, object_path, connection):

708

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

1367

"""Overloading of standard D-Bus method.

1368

1369

Inserts property tags and interface annotation tags.

709

1370

"""

710

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

711

connection)

1371

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1372

object_path,

1373

connection)

712

1374

try:

713

1375

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

1376

714

1377

def make_tag(document, name, prop):

715

1378

e = document.createElement("property")

716

1379

e.setAttribute("name", name)

717

1380

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

718

1381

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

719

1382

return e

1383

720

1384

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

1385

# Add property tags

721

1386

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

722

1387

for name, prop

723

in self._get_all_dbus_properties()

1388

in self._get_all_dbus_things("property")

724

1389

if prop._dbus_interface

725

1390

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

726

1391

if_tag.appendChild(tag)

1392

# Add annotation tags for properties

1393

for tag in if_tag.getElementsByTagName("property"):

1394

annots = dict()

1395

for name, prop in self._get_all_dbus_things(

1396

"property"):

1397

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

1398

and prop._dbus_interface

1399

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

1400

annots.update(getattr(

1401

prop, "_dbus_annotations", {}))

1402

for name, value in annots.items():

1403

ann_tag = document.createElement(

1404

"annotation")

1405

ann_tag.setAttribute("name", name)

1406

ann_tag.setAttribute("value", value)

1407

tag.appendChild(ann_tag)

727

1408

# Add the names to the return values for the

728

1409

# "org.freedesktop.DBus.Properties" methods

729

1410

if (if_tag.getAttribute("name")

744

1425

except (AttributeError, xml.dom.DOMException,

745

1426

xml.parsers.expat.ExpatError) as error:

746

1427

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

747

error)

748

return xmlstring

749

750

751

def datetime_to_dbus (dt, variant_level=0):

1428

exc_info=error)

1429

return xmlstring

1430

1431

try:

1432

dbus.OBJECT_MANAGER_IFACE

1433

except AttributeError:

1434

dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"

1435

1436

class DBusObjectWithObjectManager(DBusObjectWithAnnotations):

1437

"""A D-Bus object with an ObjectManager.

1438

1439

Classes inheriting from this exposes the standard

1440

GetManagedObjects call and the InterfacesAdded and

1441

InterfacesRemoved signals on the standard

1442

"org.freedesktop.DBus.ObjectManager" interface.

1443

1444

Note: No signals are sent automatically; they must be sent

1445

manually.

1446

"""

1447

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

1448

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

1449

def GetManagedObjects(self):

1450

"""This function must be overridden"""

1451

raise NotImplementedError()

1452

1453

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,

1454

signature = "oa{sa{sv}}")

1455

def InterfacesAdded(self, object_path, interfaces_and_properties):

1456

pass

1457

1458

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature = "oas")

1459

def InterfacesRemoved(self, object_path, interfaces):

1460

pass

1461

1462

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1463

out_signature = "s",

1464

path_keyword = 'object_path',

1465

connection_keyword = 'connection')

1466

def Introspect(self, object_path, connection):

1467

"""Overloading of standard D-Bus method.

1468

1469

Override return argument name of GetManagedObjects to be

1470

"objpath_interfaces_and_properties"

1471

"""

1472

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1473

object_path,

1474

connection)

1475

try:

1476

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

1477

1478

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

1479

# Fix argument name for the GetManagedObjects method

1480

if (if_tag.getAttribute("name")

1481

== dbus.OBJECT_MANAGER_IFACE):

1482

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

1483

if (cn.getAttribute("name")

1484

== "GetManagedObjects"):

1485

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

1486

if (arg.getAttribute("direction")

1487

== "out"):

1488

arg.setAttribute(

1489

"name",

1490

"objpath_interfaces"

1491

"_and_properties")

1492

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

1493

document.unlink()

1494

except (AttributeError, xml.dom.DOMException,

1495

xml.parsers.expat.ExpatError) as error:

1496

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

1497

exc_info = error)

1498

return xmlstring

1499

1500

def datetime_to_dbus(dt, variant_level=0):

752

1501

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

753

1502

if dt is None:

754

1503

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

755

return dbus.String(dt.isoformat(),

756

variant_level=variant_level)

757

758

class transitional_dbus_metaclass(DBusObjectWithProperties.__metaclass__):

759

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

760

for attrname, old_dbusobj in inspect.getmembers(bases[0]):

761

new_interface = getattr(old_dbusobj, "_dbus_interface", "").replace("se.bsnet.fukt.", "se.recompile.")

762

if (getattr(old_dbusobj, "_dbus_is_signal", False)

763

and old_dbusobj._dbus_interface.startswith("se.bsnet.fukt.Mandos")):

764

unwrappedfunc = dict(zip(old_dbusobj.func_code.co_freevars,

765

old_dbusobj.__closure__))["func"].cell_contents

766

newfunc = types.FunctionType(unwrappedfunc.func_code,

767

unwrappedfunc.func_globals,

768

unwrappedfunc.func_name,

769

unwrappedfunc.func_defaults,

770

unwrappedfunc.func_closure)

771

new_dbusfunc = dbus.service.signal(

772

new_interface, old_dbusobj._dbus_signature)(newfunc)

773

attr["_transitional_" + attrname] = new_dbusfunc

774

775

def fixscope(func1, func2):

776

def newcall(*args, **kwargs):

777

func1(*args, **kwargs)

778

func2(*args, **kwargs)

779

return newcall

780

781

attr[attrname] = fixscope(old_dbusobj, new_dbusfunc)

782

783

elif (getattr(old_dbusobj, "_dbus_is_method", False)

784

and old_dbusobj._dbus_interface.startswith("se.bsnet.fukt.Mandos")):

785

new_dbusfunc = (dbus.service.method

786

(new_interface,

787

old_dbusobj._dbus_in_signature,

788

old_dbusobj._dbus_out_signature)

789

(types.FunctionType

790

(old_dbusobj.func_code,

791

old_dbusobj.func_globals,

792

old_dbusobj.func_name,

793

old_dbusobj.func_defaults,

794

old_dbusobj.func_closure)))

795

796

attr[attrname] = new_dbusfunc

797

elif (getattr(old_dbusobj, "_dbus_is_property", False)

798

and old_dbusobj._dbus_interface.startswith("se.bsnet.fukt.Mandos")):

799

new_dbusfunc = (dbus_service_property

800

(new_interface,

801

old_dbusobj._dbus_signature,

802

old_dbusobj._dbus_access,

803

old_dbusobj._dbus_get_args_options["byte_arrays"])

804

(types.FunctionType

805

(old_dbusobj.func_code,

806

old_dbusobj.func_globals,

807

old_dbusobj.func_name,

808

old_dbusobj.func_defaults,

809

old_dbusobj.func_closure)))

810

811

attr[attrname] = new_dbusfunc

812

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

813

1504

return dbus.String(dt.isoformat(), variant_level=variant_level)

1505

1506

1507

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1508

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

1509

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

1510

interface names according to the "alt_interface_names" mapping.

1511

Usage:

1512

1513

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

1514

"net.example.AlternateInterface"})

1515

class SampleDBusObject(dbus.service.Object):

1516

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

1517

def SampleDBusMethod():

1518

pass

1519

1520

The above "SampleDBusMethod" on "SampleDBusObject" will be

1521

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

1522

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

1523

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

1524

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

1525

1526

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

1527

(from DBusObjectWithProperties) and interfaces (from the

1528

dbus_interface_annotations decorator).

1529

"""

1530

1531

def wrapper(cls):

1532

for orig_interface_name, alt_interface_name in (

1533

alt_interface_names.items()):

1534

attr = {}

1535

interface_names = set()

1536

# Go though all attributes of the class

1537

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

1538

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

1539

# with the wrong interface name

1540

if (not hasattr(attribute, "_dbus_interface")

1541

or not attribute._dbus_interface.startswith(

1542

orig_interface_name)):

1543

continue

1544

# Create an alternate D-Bus interface name based on

1545

# the current name

1546

alt_interface = attribute._dbus_interface.replace(

1547

orig_interface_name, alt_interface_name)

1548

interface_names.add(alt_interface)

1549

# Is this a D-Bus signal?

1550

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

1551

# Extract the original non-method undecorated

1552

# function by black magic

1553

if sys.version_info.major == 2:

1554

nonmethod_func = (dict(

1555

zip(attribute.func_code.co_freevars,

1556

attribute.__closure__))

1557

["func"].cell_contents)

1558

else:

1559

nonmethod_func = (dict(

1560

zip(attribute.__code__.co_freevars,

1561

attribute.__closure__))

1562

["func"].cell_contents)

1563

# Create a new, but exactly alike, function

1564

# object, and decorate it to be a new D-Bus signal

1565

# with the alternate D-Bus interface name

1566

new_function = copy_function(nonmethod_func)

1567

new_function = (dbus.service.signal(

1568

alt_interface,

1569

attribute._dbus_signature)(new_function))

1570

# Copy annotations, if any

1571

try:

1572

new_function._dbus_annotations = dict(

1573

attribute._dbus_annotations)

1574

except AttributeError:

1575

pass

1576

# Define a creator of a function to call both the

1577

# original and alternate functions, so both the

1578

# original and alternate signals gets sent when

1579

# the function is called

1580

def fixscope(func1, func2):

1581

"""This function is a scope container to pass

1582

func1 and func2 to the "call_both" function

1583

outside of its arguments"""

1584

1585

@functools.wraps(func2)

1586

def call_both(*args, **kwargs):

1587

"""This function will emit two D-Bus

1588

signals by calling func1 and func2"""

1589

func1(*args, **kwargs)

1590

func2(*args, **kwargs)

1591

# Make wrapper function look like a D-Bus signal

1592

for name, attr in inspect.getmembers(func2):

1593

if name.startswith("_dbus_"):

1594

setattr(call_both, name, attr)

1595

1596

return call_both

1597

# Create the "call_both" function and add it to

1598

# the class

1599

attr[attrname] = fixscope(attribute, new_function)

1600

# Is this a D-Bus method?

1601

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

1602

# Create a new, but exactly alike, function

1603

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

1604

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

1605

# to the class.

1606

attr[attrname] = (

1607

dbus.service.method(

1608

alt_interface,

1609

attribute._dbus_in_signature,

1610

attribute._dbus_out_signature)

1611

(copy_function(attribute)))

1612

# Copy annotations, if any

1613

try:

1614

attr[attrname]._dbus_annotations = dict(

1615

attribute._dbus_annotations)

1616

except AttributeError:

1617

pass

1618

# Is this a D-Bus property?

1619

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

1620

# Create a new, but exactly alike, function

1621

# object, and decorate it to be a new D-Bus

1622

# property with the alternate D-Bus interface

1623

# name. Add it to the class.

1624

attr[attrname] = (dbus_service_property(

1625

alt_interface, attribute._dbus_signature,

1626

attribute._dbus_access,

1627

attribute._dbus_get_args_options

1628

["byte_arrays"])

1629

(copy_function(attribute)))

1630

# Copy annotations, if any

1631

try:

1632

attr[attrname]._dbus_annotations = dict(

1633

attribute._dbus_annotations)

1634

except AttributeError:

1635

pass

1636

# Is this a D-Bus interface?

1637

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

1638

# Create a new, but exactly alike, function

1639

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

1640

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

1641

# to the class.

1642

attr[attrname] = (

1643

dbus_interface_annotations(alt_interface)

1644

(copy_function(attribute)))

1645

if deprecate:

1646

# Deprecate all alternate interfaces

1647

iname="_AlternateDBusNames_interface_annotation{}"

1648

for interface_name in interface_names:

1649

1650

@dbus_interface_annotations(interface_name)

1651

def func(self):

1652

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

1653

"true" }

1654

# Find an unused name

1655

for aname in (iname.format(i)

1656

for i in itertools.count()):

1657

if aname not in attr:

1658

attr[aname] = func

1659

break

1660

if interface_names:

1661

# Replace the class with a new subclass of it with

1662

# methods, signals, etc. as created above.

1663

if sys.version_info.major == 2:

1664

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

1665

(cls, ), attr)

1666

else:

1667

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

1668

(cls, ), attr)

1669

return cls

1670

1671

return wrapper

1672

1673

1674

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

1675

"se.bsnet.fukt.Mandos"})

814

1676

class ClientDBus(Client, DBusObjectWithProperties):

815

1677

"""A Client class using D-Bus

816

1678

820

1682

"""

821

1683

822

1684

runtime_expansions = (Client.runtime_expansions

823

+ ("dbus_object_path",))

1685

+ ("dbus_object_path", ))

1686

1687

_interface = "se.recompile.Mandos.Client"

824

1688

825

1689

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

826

1690

827

1691

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

828

self._approvals_pending = 0

829

1692

self.bus = bus

830

1693

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

831

1694

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

832

1695

# the D-Bus

833

client_object_name = unicode(self.name).translate(

1696

client_object_name = str(self.name).translate(

834

1697

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

835

1698

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

836

self.dbus_object_path = (dbus.ObjectPath

837

("/clients/" + client_object_name))

1699

self.dbus_object_path = dbus.ObjectPath(

1700

"/clients/" + client_object_name)

838

1701

DBusObjectWithProperties.__init__(self, self.bus,

839

1702

self.dbus_object_path)

1703

1704

def notifychangeproperty(transform_func, dbus_name,

1705

type_func=lambda x: x,

1706

variant_level=1,

1707

invalidate_only=False,

1708

_interface=_interface):

1709

""" Modify a variable so that it's a property which announces

1710

its changes to DBus.

840

1711

841

def notifychangeproperty(transform_func,

842

dbus_name, type_func=lambda x: x,

843

variant_level=1):

844

""" Modify a variable so that its a property that announce its

845

changes to DBus.

846

transform_fun: Function that takes a value and transform it to

847

DBus type.

848

dbus_name: DBus name of the variable

1712

transform_fun: Function that takes a value and a variant_level

1713

and transforms it to a D-Bus type.

1714

dbus_name: D-Bus name of the variable

849

1715

type_func: Function that transform the value before sending it

850

to DBus

851

variant_level: DBus variant level. default: 1

1716

to the D-Bus. Default: no transform

1717

variant_level: D-Bus variant level. Default: 1

852

1718

"""

853

real_value = [None,]

1719

attrname = "_{}".format(dbus_name)

1720

854

1721

def setter(self, value):

855

old_value = real_value[0]

856

real_value[0] = value

857

1722

if hasattr(self, "dbus_object_path"):

858

if type_func(old_value) != type_func(real_value[0]):

859

dbus_value = transform_func(type_func(real_value[0]),

860

variant_level)

861

self.PropertyChanged(dbus.String(dbus_name),

862

dbus_value)

1723

if (not hasattr(self, attrname) or

1724

type_func(getattr(self, attrname, None))

1725

!= type_func(value)):

1726

if invalidate_only:

1727

self.PropertiesChanged(

1728

_interface, dbus.Dictionary(),

1729

dbus.Array((dbus_name, )))

1730

else:

1731

dbus_value = transform_func(

1732

type_func(value),

1733

variant_level = variant_level)

1734

self.PropertyChanged(dbus.String(dbus_name),

1735

dbus_value)

1736

self.PropertiesChanged(

1737

_interface,

1738

dbus.Dictionary({ dbus.String(dbus_name):

1739

dbus_value }),

1740

dbus.Array())

1741

setattr(self, attrname, value)

863

1742

864

return property(lambda self: real_value[0], setter)

865

1743

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

866

1744

867

1745

expires = notifychangeproperty(datetime_to_dbus, "Expires")

868

1746

approvals_pending = notifychangeproperty(dbus.Boolean,

871

1749

enabled = notifychangeproperty(dbus.Boolean, "Enabled")

872

1750

last_enabled = notifychangeproperty(datetime_to_dbus,

873

1751

"LastEnabled")

874

checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",

875

type_func = lambda checker: checker is not None)

1752

checker = notifychangeproperty(

1753

dbus.Boolean, "CheckerRunning",

1754

type_func = lambda checker: checker is not None)

876

1755

last_checked_ok = notifychangeproperty(datetime_to_dbus,

877

1756

"LastCheckedOK")

878

last_approval_request = notifychangeproperty(datetime_to_dbus,

879

"LastApprovalRequest")

1757

last_checker_status = notifychangeproperty(dbus.Int16,

1758

"LastCheckerStatus")

1759

last_approval_request = notifychangeproperty(

1760

datetime_to_dbus, "LastApprovalRequest")

880

1761

approved_by_default = notifychangeproperty(dbus.Boolean,

881

1762

"ApprovedByDefault")

882

approval_delay = notifychangeproperty(dbus.UInt16, "ApprovalDelay",

883

type_func = _timedelta_to_milliseconds)

884

approval_duration = notifychangeproperty(dbus.UInt16, "ApprovalDuration",

885

type_func = _timedelta_to_milliseconds)

1763

approval_delay = notifychangeproperty(

1764

dbus.UInt64, "ApprovalDelay",

1765

type_func = lambda td: td.total_seconds() * 1000)

1766

approval_duration = notifychangeproperty(

1767

dbus.UInt64, "ApprovalDuration",

1768

type_func = lambda td: td.total_seconds() * 1000)

886

1769

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

887

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

888

type_func = _timedelta_to_milliseconds)

889

extended_timeout = notifychangeproperty(dbus.UInt16, "ExtendedTimeout",

890

type_func = _timedelta_to_milliseconds)

891

interval = notifychangeproperty(dbus.UInt16, "Interval",

892

type_func = _timedelta_to_milliseconds)

1770

timeout = notifychangeproperty(

1771

dbus.UInt64, "Timeout",

1772

type_func = lambda td: td.total_seconds() * 1000)

1773

extended_timeout = notifychangeproperty(

1774

dbus.UInt64, "ExtendedTimeout",

1775

type_func = lambda td: td.total_seconds() * 1000)

1776

interval = notifychangeproperty(

1777

dbus.UInt64, "Interval",

1778

type_func = lambda td: td.total_seconds() * 1000)

893

1779

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

1780

secret = notifychangeproperty(dbus.ByteArray, "Secret",

1781

invalidate_only=True)

894

1782

895

1783

del notifychangeproperty

896

1784

903

1791

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

904

1792

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

905

1793

906

def checker_callback(self, pid, condition, command,

907

*args, **kwargs):

908

self.checker_callback_tag = None

909

self.checker = None

910

if os.WIFEXITED(condition):

911

exitstatus = os.WEXITSTATUS(condition)

1794

def checker_callback(self, source, condition,

1795

connection, command, *args, **kwargs):

1796

ret = Client.checker_callback(self, source, condition,

1797

connection, command, *args,

1798

**kwargs)

1799

exitstatus = self.last_checker_status

1800

if exitstatus >= 0:

912

1801

# Emit D-Bus signal

913

1802

self.CheckerCompleted(dbus.Int16(exitstatus),

914

dbus.Int64(condition),

1803

# This is specific to GNU libC

1804

dbus.Int64(exitstatus << 8),

915

1805

dbus.String(command))

916

1806

else:

917

1807

# Emit D-Bus signal

918

1808

self.CheckerCompleted(dbus.Int16(-1),

919

dbus.Int64(condition),

1809

dbus.Int64(

1810

# This is specific to GNU libC

1811

(exitstatus << 8)

1812

| self.last_checker_signal),

920

1813

dbus.String(command))

921

922

return Client.checker_callback(self, pid, condition, command,

923

*args, **kwargs)

1814

return ret

924

1815

925

1816

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

926

old_checker = self.checker

927

if self.checker is not None:

928

old_checker_pid = self.checker.pid

929

else:

930

old_checker_pid = None

1817

old_checker_pid = getattr(self.checker, "pid", None)

931

1818

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

932

1819

# Only if new checker process was started

933

1820

if (self.checker is not None

937

1824

return r

938

1825

939

1826

def _reset_approved(self):

940

self._approved = None

1827

self.approved = None

941

1828

return False

942

1829

943

1830

def approve(self, value=True):

1831

self.approved = value

1832

GLib.timeout_add(int(self.approval_duration.total_seconds()

1833

* 1000), self._reset_approved)

944

1834

self.send_changedstate()

945

self._approved = value

946

gobject.timeout_add(_timedelta_to_milliseconds

947

(self.approval_duration),

948

self._reset_approved)

949

950

1835

951

1836

## D-Bus methods, signals & properties

952

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

953

1837

1838

## Interfaces

1839

954

1840

## Signals

955

1841

956

1842

# CheckerCompleted - signal

966

1852

pass

967

1853

968

1854

# PropertyChanged - signal

1855

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

969

1856

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

970

1857

def PropertyChanged(self, property, value):

971

1858

"D-Bus signal"

1005

1892

self.checked_ok()

1006

1893

1007

1894

# Enable - method

1895

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

1008

1896

@dbus.service.method(_interface)

1009

1897

def Enable(self):

1010

1898

"D-Bus method"

1011

1899

self.enable()

1012

1900

1013

1901

# StartChecker - method

1902

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

1014

1903

@dbus.service.method(_interface)

1015

1904

def StartChecker(self):

1016

1905

"D-Bus method"

1017

1906

self.start_checker()

1018

1907

1019

1908

# Disable - method

1909

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

1020

1910

@dbus.service.method(_interface)

1021

1911

def Disable(self):

1022

1912

"D-Bus method"

1023

1913

self.disable()

1024

1914

1025

1915

# StopChecker - method

1916

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

1026

1917

@dbus.service.method(_interface)

1027

1918

def StopChecker(self):

1028

1919

self.stop_checker()

1035

1926

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

1036

1927

1037

1928

# ApprovedByDefault - property

1038

@dbus_service_property(_interface, signature="b",

1929

@dbus_service_property(_interface,

1930

signature="b",

1039

1931

access="readwrite")

1040

1932

def ApprovedByDefault_dbus_property(self, value=None):

1041

1933

if value is None: # get

1043

1935

self.approved_by_default = bool(value)

1044

1936

1045

1937

# ApprovalDelay - property

1046

@dbus_service_property(_interface, signature="t",

1938

@dbus_service_property(_interface,

1939

signature="t",

1047

1940

access="readwrite")

1048

1941

def ApprovalDelay_dbus_property(self, value=None):

1049

1942

if value is None: # get

1050

return dbus.UInt64(self.approval_delay_milliseconds())

1943

return dbus.UInt64(self.approval_delay.total_seconds()

1944

* 1000)

1051

1945

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

1052

1946

1053

1947

# ApprovalDuration - property

1054

@dbus_service_property(_interface, signature="t",

1948

@dbus_service_property(_interface,

1949

signature="t",

1055

1950

access="readwrite")

1056

1951

def ApprovalDuration_dbus_property(self, value=None):

1057

1952

if value is None: # get

1058

return dbus.UInt64(_timedelta_to_milliseconds(

1059

self.approval_duration))

1953

return dbus.UInt64(self.approval_duration.total_seconds()

1954

* 1000)

1060

1955

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

1061

1956

1062

1957

# Name - property

1958

@dbus_annotations(

1959

{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})

1063

1960

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

1064

1961

def Name_dbus_property(self):

1065

1962

return dbus.String(self.name)

1066

1963

1067

1964

# Fingerprint - property

1965

@dbus_annotations(

1966

{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})

1068

1967

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

1069

1968

def Fingerprint_dbus_property(self):

1070

1969

return dbus.String(self.fingerprint)

1071

1970

1072

1971

# Host - property

1073

@dbus_service_property(_interface, signature="s",

1972

@dbus_service_property(_interface,

1973

signature="s",

1074

1974

access="readwrite")

1075

1975

def Host_dbus_property(self, value=None):

1076

1976

if value is None: # get

1077

1977

return dbus.String(self.host)

1078

self.host = value

1978

self.host = str(value)

1079

1979

1080

1980

# Created - property

1981

@dbus_annotations(

1982

{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})

1081

1983

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

1082

1984

def Created_dbus_property(self):

1083

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

1985

return datetime_to_dbus(self.created)

1084

1986

1085

1987

# LastEnabled - property

1086

1988

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

1088

1990

return datetime_to_dbus(self.last_enabled)

1089

1991

1090

1992

# Enabled - property

1091

@dbus_service_property(_interface, signature="b",

1993

@dbus_service_property(_interface,

1994

signature="b",

1092

1995

access="readwrite")

1093

1996

def Enabled_dbus_property(self, value=None):

1094

1997

if value is None: # get

1099

2002

self.disable()

1100

2003

1101

2004

# LastCheckedOK - property

1102

@dbus_service_property(_interface, signature="s",

2005

@dbus_service_property(_interface,

2006

signature="s",

1103

2007

access="readwrite")

1104

2008

def LastCheckedOK_dbus_property(self, value=None):

1105

2009

if value is not None:

1107

2011

return

1108

2012

return datetime_to_dbus(self.last_checked_ok)

1109

2013

2014

# LastCheckerStatus - property

2015

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

2016

def LastCheckerStatus_dbus_property(self):

2017

return dbus.Int16(self.last_checker_status)

2018

1110

2019

# Expires - property

1111

2020

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

1112

2021

def Expires_dbus_property(self):

1118

2027

return datetime_to_dbus(self.last_approval_request)

1119

2028

1120

2029

# Timeout - property

1121

@dbus_service_property(_interface, signature="t",

2030

@dbus_service_property(_interface,

2031

signature="t",

1122

2032

access="readwrite")

1123

2033

def Timeout_dbus_property(self, value=None):

1124

2034

if value is None: # get

1125

return dbus.UInt64(self.timeout_milliseconds())

2035

return dbus.UInt64(self.timeout.total_seconds() * 1000)

2036

old_timeout = self.timeout

1126

2037

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

1127

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

1128

return

1129

# Reschedule timeout

1130

gobject.source_remove(self.disable_initiator_tag)

1131

self.disable_initiator_tag = None

1132

self.expires = None

1133

time_to_die = (self.

1134

_timedelta_to_milliseconds((self

1135

.last_checked_ok

1136

+ self.timeout)

1137

- datetime.datetime

1138

.utcnow()))

1139

if time_to_die <= 0:

1140

# The timeout has passed

1141

self.disable()

1142

else:

1143

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

1144

+ datetime.timedelta(milliseconds = time_to_die))

1145

self.disable_initiator_tag = (gobject.timeout_add

1146

(time_to_die, self.disable))

2038

# Reschedule disabling

2039

if self.enabled:

2040

now = datetime.datetime.utcnow()

2041

self.expires += self.timeout - old_timeout

2042

if self.expires <= now:

2043

# The timeout has passed

2044

self.disable()

2045

else:

2046

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

2047

is None):

2048

return

2049

GLib.source_remove(self.disable_initiator_tag)

2050

self.disable_initiator_tag = GLib.timeout_add(

2051

int((self.expires - now).total_seconds() * 1000),

2052

self.disable)

1147

2053

1148

2054

# ExtendedTimeout - property

1149

@dbus_service_property(_interface, signature="t",

2055

@dbus_service_property(_interface,

2056

signature="t",

1150

2057

access="readwrite")

1151

2058

def ExtendedTimeout_dbus_property(self, value=None):

1152

2059

if value is None: # get

1153

return dbus.UInt64(self.extended_timeout_milliseconds())

2060

return dbus.UInt64(self.extended_timeout.total_seconds()

2061

* 1000)

1154

2062

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

1155

2063

1156

2064

# Interval - property

1157

@dbus_service_property(_interface, signature="t",

2065

@dbus_service_property(_interface,

2066

signature="t",

1158

2067

access="readwrite")

1159

2068

def Interval_dbus_property(self, value=None):

1160

2069

if value is None: # get

1161

return dbus.UInt64(self.interval_milliseconds())

2070

return dbus.UInt64(self.interval.total_seconds() * 1000)

1162

2071

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

1163

2072

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

1164

2073

return

1165

# Reschedule checker run

1166

gobject.source_remove(self.checker_initiator_tag)

1167

self.checker_initiator_tag = (gobject.timeout_add

1168

(value, self.start_checker))

1169

self.start_checker() # Start one now, too

2074

if self.enabled:

2075

# Reschedule checker run

2076

GLib.source_remove(self.checker_initiator_tag)

2077

self.checker_initiator_tag = GLib.timeout_add(

2078

value, self.start_checker)

2079

self.start_checker() # Start one now, too

1170

2080

1171

2081

# Checker - property

1172

@dbus_service_property(_interface, signature="s",

2082

@dbus_service_property(_interface,

2083

signature="s",

1173

2084

access="readwrite")

1174

2085

def Checker_dbus_property(self, value=None):

1175

2086

if value is None: # get

1176

2087

return dbus.String(self.checker_command)

1177

self.checker_command = value

2088

self.checker_command = str(value)

1178

2089

1179

2090

# CheckerRunning - property

1180

@dbus_service_property(_interface, signature="b",

2091

@dbus_service_property(_interface,

2092

signature="b",

1181

2093

access="readwrite")

1182

2094

def CheckerRunning_dbus_property(self, value=None):

1183

2095

if value is None: # get

1188

2100

self.stop_checker()

1189

2101

1190

2102

# ObjectPath - property

2103

@dbus_annotations(

2104

{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",

2105

"org.freedesktop.DBus.Deprecated": "true"})

1191

2106

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

1192

2107

def ObjectPath_dbus_property(self):

1193

2108

return self.dbus_object_path # is already a dbus.ObjectPath

1194

2109

1195

2110

# Secret = property

1196

@dbus_service_property(_interface, signature="ay",

1197

access="write", byte_arrays=True)

2111

@dbus_annotations(

2112

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

2113

"invalidates"})

2114

@dbus_service_property(_interface,

2115

signature="ay",

2116

access="write",

2117

byte_arrays=True)

1198

2118

def Secret_dbus_property(self, value):

1199

self.secret = str(value)

2119

self.secret = bytes(value)

1200

2120

1201

2121

del _interface

1202

2122

1206

2126

self._pipe = child_pipe

1207

2127

self._pipe.send(('init', fpr, address))

1208

2128

if not self._pipe.recv():

1209

raise KeyError()

2129

raise KeyError(fpr)

1210

2130

1211

2131

def __getattribute__(self, name):

1212

if(name == '_pipe'):

2132

if name == '_pipe':

1213

2133

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

1214

2134

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

1215

2135

data = self._pipe.recv()

1216

2136

if data[0] == 'data':

1217

2137

return data[1]

1218

2138

if data[0] == 'function':

2139

1219

2140

def func(*args, **kwargs):

1220

2141

self._pipe.send(('funcall', name, args, kwargs))

1221

2142

return self._pipe.recv()[1]

2143

1222

2144

return func

1223

2145

1224

2146

def __setattr__(self, name, value):

1225

if(name == '_pipe'):

2147

if name == '_pipe':

1226

2148

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

1227

2149

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

1228

2150

1229

class ClientDBusTransitional(ClientDBus):

1230

__metaclass__ = transitional_dbus_metaclass

1231

2151

1232

2152

class ClientHandler(socketserver.BaseRequestHandler, object):

1233

2153

"""A class to handle client connections.

1238

2158

def handle(self):

1239

2159

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

1240

2160

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

1241

unicode(self.client_address))

2161

str(self.client_address))

1242

2162

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

1243

2163

self.server.child_pipe.fileno())

1244

2164

1245

session = (gnutls.connection

1246

.ClientSession(self.request,

1247

gnutls.connection

1248

.X509Credentials()))

1249

1250

# Note: gnutls.connection.X509Credentials is really a

1251

# generic GnuTLS certificate credentials object so long as

1252

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

1253

# here despite using OpenPGP certificates.

2165

session = gnutls.ClientSession(self.request)

1254

2166

1255

2167

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

1256

2168

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

1260

2172

priority = self.server.gnutls_priority

1261

2173

if priority is None:

1262

2174

priority = "NORMAL"

1263

(gnutls.library.functions

1264

.gnutls_priority_set_direct(session._c_object,

1265

priority, None))

2175

gnutls.priority_set_direct(session._c_object, priority,

2176

None)

1266

2177

1267

2178

# Start communication using the Mandos protocol

1268

2179

# Get protocol number

1270

2181

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

1271

2182

try:

1272

2183

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

1273

raise RuntimeError

2184

raise RuntimeError(line)

1274

2185

except (ValueError, IndexError, RuntimeError) as error:

1275

2186

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

1276

2187

return

1278

2189

# Start GnuTLS connection

1279

2190

try:

1280

2191

session.handshake()

1281

except gnutls.errors.GNUTLSError as error:

2192

except gnutls.Error as error:

1282

2193

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

1283

2194

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

1284

2195

# established. Just abandon the request.

1288

2199

approval_required = False

1289

2200

try:

1290

2201

try:

1291

fpr = self.fingerprint(self.peer_certificate

1292

(session))

1293

except (TypeError,

1294

gnutls.errors.GNUTLSError) as error:

2202

fpr = self.fingerprint(

2203

self.peer_certificate(session))

2204

except (TypeError, gnutls.Error) as error:

1295

2205

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

1296

2206

return

1297

2207

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

1310

2220

while True:

1311

2221

if not client.enabled:

1312

2222

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

1313

client.name)

2223

client.name)

1314

2224

if self.server.use_dbus:

1315

2225

# Emit D-Bus signal

1316

client.Rejected("Disabled")

2226

client.Rejected("Disabled")

1317

2227

return

1318

2228

1319

if client._approved or not client.approval_delay:

2229

if client.approved or not client.approval_delay:

1320

2230

#We are approved or approval is disabled

1321

2231

break

1322

elif client._approved is None:

2232

elif client.approved is None:

1323

2233

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

1324

2234

client.name)

1325

2235

if self.server.use_dbus:

1326

2236

# Emit D-Bus signal

1327

2237

client.NeedApproval(

1328

client.approval_delay_milliseconds(),

1329

client.approved_by_default)

2238

client.approval_delay.total_seconds()

2239

* 1000, client.approved_by_default)

1330

2240

else:

1331

2241

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

1332

2242

client.name)

1336

2246

return

1337

2247

1338

2248

#wait until timeout or approved

1339

#x = float(client._timedelta_to_milliseconds(delay))

1340

2249

time = datetime.datetime.now()

1341

2250

client.changedstate.acquire()

1342

client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))

2251

client.changedstate.wait(delay.total_seconds())

1343

2252

client.changedstate.release()

1344

2253

time2 = datetime.datetime.now()

1345

2254

if (time2 - time) >= delay:

1356

2265

else:

1357

2266

delay -= time2 - time

1358

2267

1359

sent_size = 0

1360

while sent_size < len(client.secret):

1361

try:

1362

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

1363

except gnutls.errors.GNUTLSError as error:

1364

logger.warning("gnutls send failed")

1365

return

1366

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

1367

sent, len(client.secret)

1368

- (sent_size + sent))

1369

sent_size += sent

2268

try:

2269

session.send(client.secret)

2270

except gnutls.Error as error:

2271

logger.warning("gnutls send failed",

2272

exc_info = error)

2273

return

1370

2274

1371

2275

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

1372

# bump the timeout as if seen

1373

client.checked_ok(client.extended_timeout)

2276

# bump the timeout using extended_timeout

2277

client.bump_timeout(client.extended_timeout)

1374

2278

if self.server.use_dbus:

1375

2279

# Emit D-Bus signal

1376

2280

client.GotSecret()

1380

2284

client.approvals_pending -= 1

1381

2285

try:

1382

2286

session.bye()

1383

except gnutls.errors.GNUTLSError as error:

1384

logger.warning("GnuTLS bye failed")

2287

except gnutls.Error as error:

2288

logger.warning("GnuTLS bye failed",

2289

exc_info=error)

1385

2290

1386

2291

@staticmethod

1387

2292

def peer_certificate(session):

1388

2293

"Return the peer's OpenPGP certificate as a bytestring"

1389

2294

# If not an OpenPGP certificate...

1390

if (gnutls.library.functions

1391

.gnutls_certificate_type_get(session._c_object)

1392

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1393

# ...do the normal thing

1394

return session.peer_certificate

2295

if (gnutls.certificate_type_get(session._c_object)

2296

!= gnutls.CRT_OPENPGP):

2297

# ...return invalid data

2298

return b""

1395

2299

list_size = ctypes.c_uint(1)

1396

cert_list = (gnutls.library.functions

1397

.gnutls_certificate_get_peers

2300

cert_list = (gnutls.certificate_get_peers

1398

2301

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

1399

2302

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

1400

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

1401

" certificate")

2303

raise gnutls.Error("error getting peer certificate")

1402

2304

if list_size.value == 0:

1403

2305

return None

1404

2306

cert = cert_list[0]

1408

2310

def fingerprint(openpgp):

1409

2311

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

1410

2312

# New GnuTLS "datum" with the OpenPGP public key

1411

datum = (gnutls.library.types

1412

.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),

1413

ctypes.POINTER

1414

(ctypes.c_ubyte)),

1415

ctypes.c_uint(len(openpgp))))

2313

datum = gnutls.datum_t(

2314

ctypes.cast(ctypes.c_char_p(openpgp),

2315

ctypes.POINTER(ctypes.c_ubyte)),

2316

ctypes.c_uint(len(openpgp)))

1416

2317

# New empty GnuTLS certificate

1417

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1418

(gnutls.library.functions

1419

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

2318

crt = gnutls.openpgp_crt_t()

2319

gnutls.openpgp_crt_init(ctypes.byref(crt))

1420

2320

# Import the OpenPGP public key into the certificate

1421

(gnutls.library.functions

1422

.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),

1423

gnutls.library.constants

1424

.GNUTLS_OPENPGP_FMT_RAW))

2321

gnutls.openpgp_crt_import(crt, ctypes.byref(datum),

2322

gnutls.OPENPGP_FMT_RAW)

1425

2323

# Verify the self signature in the key

1426

2324

crtverify = ctypes.c_uint()

1427

(gnutls.library.functions

1428

.gnutls_openpgp_crt_verify_self(crt, 0,

1429

ctypes.byref(crtverify)))

2325

gnutls.openpgp_crt_verify_self(crt, 0,

2326

ctypes.byref(crtverify))

1430

2327

if crtverify.value != 0:

1431

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1432

raise (gnutls.errors.CertificateSecurityError

1433

("Verify failed"))

2328

gnutls.openpgp_crt_deinit(crt)

2329

raise gnutls.CertificateSecurityError("Verify failed")

1434

2330

# New buffer for the fingerprint

1435

2331

buf = ctypes.create_string_buffer(20)

1436

2332

buf_len = ctypes.c_size_t()

1437

2333

# Get the fingerprint from the certificate into the buffer

1438

(gnutls.library.functions

1439

.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),

1440

ctypes.byref(buf_len)))

2334

gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),

2335

ctypes.byref(buf_len))

1441

2336

# Deinit the certificate

1442

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

2337

gnutls.openpgp_crt_deinit(crt)

1443

2338

# Convert the buffer to a Python bytestring

1444

2339

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

1445

2340

# Convert the bytestring to hexadecimal notation

1446

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

2341

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

1447

2342

return hex_fpr

1448

2343

1449

2344

1450

2345

class MultiprocessingMixIn(object):

1451

2346

"""Like socketserver.ThreadingMixIn, but with multiprocessing"""

2347

1452

2348

def sub_process_main(self, request, address):

1453

2349

try:

1454

2350

self.finish_request(request, address)

1455

except:

2351

except Exception:

1456

2352

self.handle_error(request, address)

1457

2353

self.close_request(request)

1458

2354

1459

2355

def process_request(self, request, address):

1460

2356

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

1461

multiprocessing.Process(target = self.sub_process_main,

1462

args = (request, address)).start()

2357

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

2358

args = (request, address))

2359

proc.start()

2360

return proc

1463

2361

1464

2362

1465

2363

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

1466

2364

""" adds a pipe to the MixIn """

2365

1467

2366

def process_request(self, request, client_address):

1468

2367

"""Overrides and wraps the original process_request().

1469

2368

1471

2370

"""

1472

2371

parent_pipe, self.child_pipe = multiprocessing.Pipe()

1473

2372

1474

super(MultiprocessingMixInWithPipe,

1475

self).process_request(request, client_address)

2373

proc = MultiprocessingMixIn.process_request(self, request,

2374

client_address)

1476

2375

self.child_pipe.close()

1477

self.add_pipe(parent_pipe)

2376

self.add_pipe(parent_pipe, proc)

1478

2377

1479

def add_pipe(self, parent_pipe):

2378

def add_pipe(self, parent_pipe, proc):

1480

2379

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

1481

raise NotImplementedError

2380

raise NotImplementedError()

1482

2381

1483

2382

1484

2383

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

1490

2389

interface: None or a network interface name (string)

1491

2390

use_ipv6: Boolean; to use IPv6 or not

1492

2391

"""

2392

1493

2393

def __init__(self, server_address, RequestHandlerClass,

1494

interface=None, use_ipv6=True):

2394

interface=None,

2395

use_ipv6=True,

2396

socketfd=None):

2397

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

2398

creating a new one with socket.socket().

2399

"""

1495

2400

self.interface = interface

1496

2401

if use_ipv6:

1497

2402

self.address_family = socket.AF_INET6

2403

if socketfd is not None:

2404

# Save the file descriptor

2405

self.socketfd = socketfd

2406

# Save the original socket.socket() function

2407

self.socket_socket = socket.socket

2408

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

2409

#

2410

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

2411

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

2412

# patching socket.socket.)

2413

#

2414

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

2415

@functools.wraps(socket.socket)

2416

def socket_wrapper(*args, **kwargs):

2417

# Restore original function so subsequent calls are

2418

# not affected.

2419

socket.socket = self.socket_socket

2420

del self.socket_socket

2421

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

2422

# saved file descriptor.

2423

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

2424

# Replace socket.socket() function with wrapper

2425

socket.socket = socket_wrapper

2426

# The socketserver.TCPServer.__init__ will call

2427

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

2428

# socket_wrapper(), if socketfd was set.

1498

2429

socketserver.TCPServer.__init__(self, server_address,

1499

2430

RequestHandlerClass)

2431

1500

2432

def server_bind(self):

1501

2433

"""This overrides the normal server_bind() function

1502

2434

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

1508

2440

self.interface)

1509

2441

else:

1510

2442

try:

1511

self.socket.setsockopt(socket.SOL_SOCKET,

1512

SO_BINDTODEVICE,

1513

str(self.interface

1514

+ '\0'))

2443

self.socket.setsockopt(

2444

socket.SOL_SOCKET, SO_BINDTODEVICE,

2445

(self.interface + "\0").encode("utf-8"))

1515

2446

except socket.error as error:

1516

if error[0] == errno.EPERM:

1517

logger.error("No permission to"

1518

" bind to interface %s",

1519

self.interface)

1520

elif error[0] == errno.ENOPROTOOPT:

2447

if error.errno == errno.EPERM:

2448

logger.error("No permission to bind to"

2449

" interface %s", self.interface)

2450

elif error.errno == errno.ENOPROTOOPT:

1521

2451

logger.error("SO_BINDTODEVICE not available;"

1522

2452

" cannot bind to interface %s",

1523

2453

self.interface)

2454

elif error.errno == errno.ENODEV:

2455

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

2456

" cannot bind", self.interface)

1524

2457

else:

1525

2458

raise

1526

2459

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

1529

2462

if self.address_family == socket.AF_INET6:

1530

2463

any_address = "::" # in6addr_any

1531

2464

else:

1532

any_address = socket.INADDR_ANY

2465

any_address = "0.0.0.0" # INADDR_ANY

1533

2466

self.server_address = (any_address,

1534

2467

self.server_address[1])

1535

2468

elif not self.server_address[1]:

1536

self.server_address = (self.server_address[0],

1537

0)

2469

self.server_address = (self.server_address[0], 0)

1538

2470

# if self.interface:

1539

2471

# self.server_address = (self.server_address[0],

1540

2472

# 0, # port

1552

2484

gnutls_priority GnuTLS priority string

1553

2485

use_dbus: Boolean; to emit D-Bus signals or not

1554

2486

1555

Assumes a gobject.MainLoop event loop.

2487

Assumes a GLib.MainLoop event loop.

1556

2488

"""

2489

1557

2490

def __init__(self, server_address, RequestHandlerClass,

1558

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

1559

gnutls_priority=None, use_dbus=True):

2491

interface=None,

2492

use_ipv6=True,

2493

clients=None,

2494

gnutls_priority=None,

2495

use_dbus=True,

2496

socketfd=None):

1560

2497

self.enabled = False

1561

2498

self.clients = clients

1562

2499

if self.clients is None:

1563

self.clients = set()

2500

self.clients = {}

1564

2501

self.use_dbus = use_dbus

1565

2502

self.gnutls_priority = gnutls_priority

1566

2503

IPv6_TCPServer.__init__(self, server_address,

1567

2504

RequestHandlerClass,

1568

2505

interface = interface,

1569

use_ipv6 = use_ipv6)

2506

use_ipv6 = use_ipv6,

2507

socketfd = socketfd)

2508

1570

2509

def server_activate(self):

1571

2510

if self.enabled:

1572

2511

return socketserver.TCPServer.server_activate(self)

2512

1573

2513

def enable(self):

1574

2514

self.enabled = True

1575

def add_pipe(self, parent_pipe):

2515

2516

def add_pipe(self, parent_pipe, proc):

1576

2517

# Call "handle_ipc" for both data and EOF events

1577

gobject.io_add_watch(parent_pipe.fileno(),

1578

gobject.IO_IN | gobject.IO_HUP,

1579

functools.partial(self.handle_ipc,

1580

parent_pipe = parent_pipe))

1581

1582

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

2518

GLib.io_add_watch(

2519

parent_pipe.fileno(),

2520

GLib.IO_IN | GLib.IO_HUP,

2521

functools.partial(self.handle_ipc,

2522

parent_pipe = parent_pipe,

2523

proc = proc))

2524

2525

def handle_ipc(self, source, condition,

2526

parent_pipe=None,

2527

proc = None,

1583

2528

client_object=None):

1584

condition_names = {

1585

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

1586

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

1587

# blocking).

1588

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

1589

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

1590

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

1591

# broken, usually for pipes and

1592

# sockets).

1593

}

1594

conditions_string = ' | '.join(name

1595

for cond, name in

1596

condition_names.iteritems()

1597

if cond & condition)

1598

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

1599

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

2529

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

2530

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

2531

# Wait for other process to exit

2532

proc.join()

1600

2533

return False

1601

2534

1602

2535

# Read a request from the child

1607

2540

fpr = request[1]

1608

2541

address = request[2]

1609

2542

1610

for c in self.clients:

2543

for c in self.clients.values():

1611

2544

if c.fingerprint == fpr:

1612

2545

client = c

1613

2546

break

1616

2549

"dress: %s", fpr, address)

1617

2550

if self.use_dbus:

1618

2551

# Emit D-Bus signal

1619

mandos_dbus_service.ClientNotFound(fpr, address[0])

2552

mandos_dbus_service.ClientNotFound(fpr,

2553

address[0])

1620

2554

parent_pipe.send(False)

1621

2555

return False

1622

2556

1623

gobject.io_add_watch(parent_pipe.fileno(),

1624

gobject.IO_IN | gobject.IO_HUP,

1625

functools.partial(self.handle_ipc,

1626

parent_pipe = parent_pipe,

1627

client_object = client))

2557

GLib.io_add_watch(

2558

parent_pipe.fileno(),

2559

GLib.IO_IN | GLib.IO_HUP,

2560

functools.partial(self.handle_ipc,

2561

parent_pipe = parent_pipe,

2562

proc = proc,

2563

client_object = client))

1628

2564

parent_pipe.send(True)

1629

# remove the old hook in favor of the new above hook on same fileno

2565

# remove the old hook in favor of the new above hook on

2566

# same fileno

1630

2567

return False

1631

2568

if command == 'funcall':

1632

2569

funcname = request[1]

1633

2570

args = request[2]

1634

2571

kwargs = request[3]

1635

2572

1636

parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))

2573

parent_pipe.send(('data', getattr(client_object,

2574

funcname)(*args,

2575

**kwargs)))

1637

2576

1638

2577

if command == 'getattr':

1639

2578

attrname = request[1]

1640

if callable(client_object.__getattribute__(attrname)):

1641

parent_pipe.send(('function',))

2579

if isinstance(client_object.__getattribute__(attrname),

2580

collections.Callable):

2581

parent_pipe.send(('function', ))

1642

2582

else:

1643

parent_pipe.send(('data', client_object.__getattribute__(attrname)))

2583

parent_pipe.send((

2584

'data', client_object.__getattribute__(attrname)))

1644

2585

1645

2586

if command == 'setattr':

1646

2587

attrname = request[1]

1650

2591

return True

1651

2592

1652

2593

2594

def rfc3339_duration_to_delta(duration):

2595

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

2596

2597

>>> rfc3339_duration_to_delta("P7D")

2598

datetime.timedelta(7)

2599

>>> rfc3339_duration_to_delta("PT60S")

2600

datetime.timedelta(0, 60)

2601

>>> rfc3339_duration_to_delta("PT60M")

2602

datetime.timedelta(0, 3600)

2603

>>> rfc3339_duration_to_delta("PT24H")

2604

datetime.timedelta(1)

2605

>>> rfc3339_duration_to_delta("P1W")

2606

datetime.timedelta(7)

2607

>>> rfc3339_duration_to_delta("PT5M30S")

2608

datetime.timedelta(0, 330)

2609

>>> rfc3339_duration_to_delta("P1DT3M20S")

2610

datetime.timedelta(1, 200)

2611

"""

2612

2613

# Parsing an RFC 3339 duration with regular expressions is not

2614

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

2615

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

2616

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

2617

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

2618

# avoid excessive use of external libraries.

2619

2620

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

2621

Token = collections.namedtuple("Token", (

2622

"regexp", # To match token; if "value" is not None, must have

2623

# a "group" containing digits

2624

"value", # datetime.timedelta or None

2625

"followers")) # Tokens valid after this token

2626

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

2627

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

2628

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

2629

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

2630

datetime.timedelta(seconds=1),

2631

frozenset((token_end, )))

2632

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

2633

datetime.timedelta(minutes=1),

2634

frozenset((token_second, token_end)))

2635

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

2636

datetime.timedelta(hours=1),

2637

frozenset((token_minute, token_end)))

2638

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

2639

None,

2640

frozenset((token_hour, token_minute,

2641

token_second)))

2642

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

2643

datetime.timedelta(days=1),

2644

frozenset((token_time, token_end)))

2645

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

2646

datetime.timedelta(weeks=4),

2647

frozenset((token_day, token_end)))

2648

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

2649

datetime.timedelta(weeks=52),

2650

frozenset((token_month, token_end)))

2651

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

2652

datetime.timedelta(weeks=1),

2653

frozenset((token_end, )))

2654

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

2655

frozenset((token_year, token_month,

2656

token_day, token_time,

2657

token_week)))

2658

# Define starting values

2659

value = datetime.timedelta() # Value so far

2660

found_token = None

2661

followers = frozenset((token_duration, )) # Following valid tokens

2662

s = duration # String left to parse

2663

# Loop until end token is found

2664

while found_token is not token_end:

2665

# Search for any currently valid tokens

2666

for token in followers:

2667

match = token.regexp.match(s)

2668

if match is not None:

2669

# Token found

2670

if token.value is not None:

2671

# Value found, parse digits

2672

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

2673

# Add to value so far

2674

value += factor * token.value

2675

# Strip token from string

2676

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

2677

# Go to found token

2678

found_token = token

2679

# Set valid next tokens

2680

followers = found_token.followers

2681

break

2682

else:

2683

# No currently valid tokens were found

2684

raise ValueError("Invalid RFC 3339 duration: {!r}"

2685

.format(duration))

2686

# End token found

2687

return value

2688

2689

1653

2690

def string_to_delta(interval):

1654

2691

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

1655

2692

1666

2703

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

1667

2704

datetime.timedelta(0, 330)

1668

2705

"""

2706

2707

try:

2708

return rfc3339_duration_to_delta(interval)

2709

except ValueError:

2710

pass

2711

1669

2712

timevalue = datetime.timedelta(0)

1670

2713

for s in interval.split():

1671

2714

try:

1672

suffix = unicode(s[-1])

2715

suffix = s[-1]

1673

2716

value = int(s[:-1])

1674

2717

if suffix == "d":

1675

2718

delta = datetime.timedelta(value)

1682

2725

elif suffix == "w":

1683

2726

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

1684

2727

else:

1685

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

1686

except (ValueError, IndexError) as e:

2728

raise ValueError("Unknown suffix {!r}".format(suffix))

2729

except IndexError as e:

1687

2730

raise ValueError(*(e.args))

1688

2731

timevalue += delta

1689

2732

return timevalue

1690

2733

1691

2734

1692

def if_nametoindex(interface):

1693

"""Call the C function if_nametoindex(), or equivalent

1694

1695

Note: This function cannot accept a unicode string."""

1696

global if_nametoindex

1697

try:

1698

if_nametoindex = (ctypes.cdll.LoadLibrary

1699

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

1700

.if_nametoindex)

1701

except (OSError, AttributeError):

1702

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

1703

def if_nametoindex(interface):

1704

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

1705

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

1706

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

1707

ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

1708

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

1709

interface))

1710

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

1711

ifreq[16:20])[0]

1712

return interface_index

1713

return if_nametoindex(interface)

1714

1715

1716

2735

def daemon(nochdir = False, noclose = False):

1717

2736

"""See daemon(3). Standard BSD Unix function.

1718

2737

1726

2745

sys.exit()

1727

2746

if not noclose:

1728

2747

# Close all standard open file descriptors

1729

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

2748

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

1730

2749

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

1731

2750

raise OSError(errno.ENODEV,

1732

"%s not a character device"

1733

% os.path.devnull)

2751

"{} not a character device"

2752

.format(os.devnull))

1734

2753

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

1735

2754

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

1736

2755

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

1745

2764

1746

2765

parser = argparse.ArgumentParser()

1747

2766

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

1748

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

2767

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

1749

2768

help="show version number and exit")

1750

2769

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

1751

2770

help="Bind to interface IF")

1757

2776

help="Run self-test")

1758

2777

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

1759

2778

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

1760

" to terminal")

2779

" to terminal", default=None)

1761

2780

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

1762

2781

help="Debug level for stdout output")

1763

2782

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

1770

2789

" files")

1771

2790

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

1772

2791

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

1773

" system bus interface")

2792

" system bus interface", default=None)

1774

2793

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

1775

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

2794

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

2795

default=None)

2796

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

2797

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

2798

" state", default=None)

2799

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

2800

help="Specify a file descriptor to a network"

2801

" socket to use instead of creating one")

2802

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

2803

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

2804

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

2805

help="Run in foreground", default=None)

2806

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

2807

dest="zeroconf", help="Do not use Zeroconf",

2808

default=None)

2809

1776

2810

options = parser.parse_args()

1777

2811

1778

2812

if options.check:

1779

2813

import doctest

1780

doctest.testmod()

1781

sys.exit()

2814

fail_count, test_count = doctest.testmod()

2815

sys.exit(os.EX_OK if fail_count == 0 else 1)

1782

2816

1783

2817

# Default values for config file for server-global settings

1784

2818

server_defaults = { "interface": "",

1786

2820

"port": "",

1787

2821

"debug": "False",

1788

2822

"priority":

1789

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

2823

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

2824

":+SIGN-DSA-SHA256",

1790

2825

"servicename": "Mandos",

1791

2826

"use_dbus": "True",

1792

2827

"use_ipv6": "True",

1793

2828

"debuglevel": "",

1794

}

2829

"restore": "True",

2830

"socket": "",

2831

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

2832

"foreground": "False",

2833

"zeroconf": "True",

2834

}

1795

2835

1796

2836

# Parse config file for server-global settings

1797

2837

server_config = configparser.SafeConfigParser(server_defaults)

1798

2838

del server_defaults

1799

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

1800

"mandos.conf"))

2839

server_config.read(os.path.join(options.configdir, "mandos.conf"))

1801

2840

# Convert the SafeConfigParser object to a dict

1802

2841

server_settings = server_config.defaults()

1803

2842

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

1804

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

2843

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

1805

2844

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

1806

2845

option)

1807

2846

if server_settings["port"]:

1808

2847

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

1809

2848

"port")

2849

if server_settings["socket"]:

2850

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

2851

"socket")

2852

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

2853

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

2854

# happen with a supplied network socket.

2855

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

2856

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

2857

["socket"])

1810

2858

del server_config

1811

2859

1812

2860

# Override the settings from the config file with command line

1813

2861

# options, if set.

1814

2862

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

1815

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

1816

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

2863

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

2864

"use_ipv6", "debuglevel", "restore", "statedir",

2865

"socket", "foreground", "zeroconf"):

1817

2866

value = getattr(options, option)

1818

2867

if value is not None:

1819

2868

server_settings[option] = value

1820

2869

del options

1821

2870

# Force all strings to be unicode

1822

2871

for option in server_settings.keys():

1823

if type(server_settings[option]) is str:

1824

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

2872

if isinstance(server_settings[option], bytes):

2873

server_settings[option] = (server_settings[option]

2874

.decode("utf-8"))

2875

# Force all boolean options to be boolean

2876

for option in ("debug", "use_dbus", "use_ipv6", "restore",

2877

"foreground", "zeroconf"):

2878

server_settings[option] = bool(server_settings[option])

2879

# Debug implies foreground

2880

if server_settings["debug"]:

2881

server_settings["foreground"] = True

1825

2882

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

1826

2883

1827

2884

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

1828

2885

2886

if (not server_settings["zeroconf"]

2887

and not (server_settings["port"]

2888

or server_settings["socket"] != "")):

2889

parser.error("Needs port or socket to work without Zeroconf")

2890

1829

2891

# For convenience

1830

2892

debug = server_settings["debug"]

1831

2893

debuglevel = server_settings["debuglevel"]

1832

2894

use_dbus = server_settings["use_dbus"]

1833

2895

use_ipv6 = server_settings["use_ipv6"]

2896

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

2897

stored_state_file)

2898

foreground = server_settings["foreground"]

2899

zeroconf = server_settings["zeroconf"]

2900

2901

if debug:

2902

initlogger(debug, logging.DEBUG)

2903

else:

2904

if not debuglevel:

2905

initlogger(debug)

2906

else:

2907

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

2908

initlogger(debug, level)

1834

2909

1835

2910

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

1836

syslogger.setFormatter(logging.Formatter

1837

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

1838

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

1839

% server_settings["servicename"]))

2911

syslogger.setFormatter(

2912

logging.Formatter('Mandos ({}) [%(process)d]:'

2913

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

2914

server_settings["servicename"])))

1840

2915

1841

2916

# Parse config file with clients

1842

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

1843

"extended_timeout": "15m",

1844

"interval": "2m",

1845

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

1846

"host": "",

1847

"approval_delay": "0s",

1848

"approval_duration": "1s",

1849

}

1850

client_config = configparser.SafeConfigParser(client_defaults)

2917

client_config = configparser.SafeConfigParser(Client

2918

.client_defaults)

1851

2919

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

1852

2920

"clients.conf"))

1853

2921

1854

2922

global mandos_dbus_service

1855

2923

mandos_dbus_service = None

1856

2924

1857

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

1858

server_settings["port"]),

1859

ClientHandler,

1860

interface=(server_settings["interface"]

1861

or None),

1862

use_ipv6=use_ipv6,

1863

gnutls_priority=

1864

server_settings["priority"],

1865

use_dbus=use_dbus)

1866

if not debug:

1867

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

2925

socketfd = None

2926

if server_settings["socket"] != "":

2927

socketfd = server_settings["socket"]

2928

tcp_server = MandosServer(

2929

(server_settings["address"], server_settings["port"]),

2930

ClientHandler,

2931

interface=(server_settings["interface"] or None),

2932

use_ipv6=use_ipv6,

2933

gnutls_priority=server_settings["priority"],

2934

use_dbus=use_dbus,

2935

socketfd=socketfd)

2936

if not foreground:

2937

pidfilename = "/run/mandos.pid"

2938

if not os.path.isdir("/run/."):

2939

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

2940

pidfile = None

1868

2941

try:

1869

pidfile = open(pidfilename, "w")

1870

except IOError:

1871

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

2942

pidfile = codecs.open(pidfilename, "w", encoding="utf-8")

2943

except IOError as e:

2944

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

2945

exc_info=e)

1872

2946

1873

try:

1874

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

1875

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

1876

except KeyError:

2947

for name, group in (("_mandos", "_mandos"),

2948

("mandos", "mandos"),

2949

("nobody", "nogroup")):

1877

2950

try:

1878

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

1879

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

2951

uid = pwd.getpwnam(name).pw_uid

2952

gid = pwd.getpwnam(group).pw_gid

2953

break

1880

2954

except KeyError:

1881

try:

1882

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

1883

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

1884

except KeyError:

1885

uid = 65534

1886

gid = 65534

2955

continue

2956

else:

2957

uid = 65534

2958

gid = 65534

1887

2959

try:

1888

2960

os.setgid(gid)

1889

2961

os.setuid(uid)

2962

if debug:

2963

logger.debug("Did setuid/setgid to {}:{}".format(uid,

2964

gid))

1890

2965

except OSError as error:

1891

if error[0] != errno.EPERM:

1892

raise error

1893

1894

if not debug and not debuglevel:

1895

syslogger.setLevel(logging.WARNING)

1896

console.setLevel(logging.WARNING)

1897

if debuglevel:

1898

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

1899

syslogger.setLevel(level)

1900

console.setLevel(level)

2966

logger.warning("Failed to setuid/setgid to {}:{}: {}"

2967

.format(uid, gid, os.strerror(error.errno)))

2968

if error.errno != errno.EPERM:

2969

raise

1901

2970

1902

2971

if debug:

1903

2972

# Enable all possible GnuTLS debugging

1904

2973

1905

2974

# "Use a log level over 10 to enable all debugging options."

1906

2975

# - GnuTLS manual

1907

gnutls.library.functions.gnutls_global_set_log_level(11)

2976

gnutls.global_set_log_level(11)

1908

2977

1909

@gnutls.library.types.gnutls_log_func

2978

@gnutls.log_func

1910

2979

def debug_gnutls(level, string):

1911

2980

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

1912

2981

1913

(gnutls.library.functions

1914

.gnutls_global_set_log_function(debug_gnutls))

2982

gnutls.global_set_log_function(debug_gnutls)

1915

2983

1916

2984

# Redirect stdin so all checkers get /dev/null

1917

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

2985

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

1918

2986

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

1919

2987

if null > 2:

1920

2988

os.close(null)

1921

else:

1922

# No console logging

1923

logger.removeHandler(console)

1924

2989

1925

2990

# Need to fork before connecting to D-Bus

1926

if not debug:

2991

if not foreground:

1927

2992

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

1928

2993

daemon()

1929

2994

2995

# multiprocessing will use threads, so before we use GLib we need

2996

# to inform GLib that threads will be used.

2997

GLib.threads_init()

2998

1930

2999

global main_loop

1931

3000

# From the Avahi example code

1932

DBusGMainLoop(set_as_default=True )

1933

main_loop = gobject.MainLoop()

3001

DBusGMainLoop(set_as_default=True)

3002

main_loop = GLib.MainLoop()

1934

3003

bus = dbus.SystemBus()

1935

3004

# End of Avahi example code

1936

3005

if use_dbus:

1937

3006

try:

1938

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

1939

bus, do_not_queue=True)

1940

bus_name2 = dbus.service.BusName("se.recompile.Mandos",

1941

bus, do_not_queue=True)

1942

except dbus.exceptions.NameExistsException as e:

1943

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

3007

bus_name = dbus.service.BusName("se.recompile.Mandos",

3008

bus,

3009

do_not_queue=True)

3010

old_bus_name = dbus.service.BusName(

3011

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

3012

do_not_queue=True)

3013

except dbus.exceptions.DBusException as e:

3014

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

1944

3015

use_dbus = False

1945

3016

server_settings["use_dbus"] = False

1946

3017

tcp_server.use_dbus = False

1947

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

1948

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

1949

servicetype = "_mandos._tcp",

1950

protocol = protocol, bus = bus)

1951

if server_settings["interface"]:

1952

service.interface = (if_nametoindex

1953

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

3018

if zeroconf:

3019

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

3020

service = AvahiServiceToSyslog(

3021

name = server_settings["servicename"],

3022

servicetype = "_mandos._tcp",

3023

protocol = protocol,

3024

bus = bus)

3025

if server_settings["interface"]:

3026

service.interface = if_nametoindex(

3027

server_settings["interface"].encode("utf-8"))

1954

3028

1955

3029

global multiprocessing_manager

1956

3030

multiprocessing_manager = multiprocessing.Manager()

1957

3031

1958

3032

client_class = Client

1959

3033

if use_dbus:

1960

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

1961

def client_config_items(config, section):

1962

special_settings = {

1963

"approved_by_default":

1964

lambda: config.getboolean(section,

1965

"approved_by_default"),

1966

}

1967

for name, value in config.items(section):

3034

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

3035

3036

client_settings = Client.config_parser(client_config)

3037

old_client_settings = {}

3038

clients_data = {}

3039

3040

# This is used to redirect stdout and stderr for checker processes

3041

global wnull

3042

wnull = open(os.devnull, "w") # A writable /dev/null

3043

# Only used if server is running in foreground but not in debug

3044

# mode

3045

if debug or not foreground:

3046

wnull.close()

3047

3048

# Get client data and settings from last running state.

3049

if server_settings["restore"]:

3050

try:

3051

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

3052

if sys.version_info.major == 2:

3053

clients_data, old_client_settings = pickle.load(

3054

stored_state)

3055

else:

3056

bytes_clients_data, bytes_old_client_settings = (

3057

pickle.load(stored_state, encoding = "bytes"))

3058

### Fix bytes to strings

3059

## clients_data

3060

# .keys()

3061

clients_data = { (key.decode("utf-8")

3062

if isinstance(key, bytes)

3063

else key): value

3064

for key, value in

3065

bytes_clients_data.items() }

3066

del bytes_clients_data

3067

for key in clients_data:

3068

value = { (k.decode("utf-8")

3069

if isinstance(k, bytes) else k): v

3070

for k, v in

3071

clients_data[key].items() }

3072

clients_data[key] = value

3073

# .client_structure

3074

value["client_structure"] = [

3075

(s.decode("utf-8")

3076

if isinstance(s, bytes)

3077

else s) for s in

3078

value["client_structure"] ]

3079

# .name & .host

3080

for k in ("name", "host"):

3081

if isinstance(value[k], bytes):

3082

value[k] = value[k].decode("utf-8")

3083

## old_client_settings

3084

# .keys()

3085

old_client_settings = {

3086

(key.decode("utf-8")

3087

if isinstance(key, bytes)

3088

else key): value

3089

for key, value in

3090

bytes_old_client_settings.items() }

3091

del bytes_old_client_settings

3092

# .host

3093

for value in old_client_settings.values():

3094

if isinstance(value["host"], bytes):

3095

value["host"] = (value["host"]

3096

.decode("utf-8"))

3097

os.remove(stored_state_path)

3098

except IOError as e:

3099

if e.errno == errno.ENOENT:

3100

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

3101

" {}".format(os.strerror(e.errno)))

3102

else:

3103

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

3104

exc_info=e)

3105

raise

3106

except EOFError as e:

3107

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

3108

"EOFError:",

3109

exc_info=e)

3110

3111

with PGPEngine() as pgp:

3112

for client_name, client in clients_data.items():

3113

# Skip removed clients

3114

if client_name not in client_settings:

3115

continue

3116

3117

# Decide which value to use after restoring saved state.

3118

# We have three different values: Old config file,

3119

# new config file, and saved state.

3120

# New config value takes precedence if it differs from old

3121

# config value, otherwise use saved state.

3122

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

3123

try:

3124

# For each value in new config, check if it

3125

# differs from the old config value (Except for

3126

# the "secret" attribute)

3127

if (name != "secret"

3128

and (value !=

3129

old_client_settings[client_name][name])):

3130

client[name] = value

3131

except KeyError:

3132

pass

3133

3134

# Clients who has passed its expire date can still be

3135

# enabled if its last checker was successful. A Client

3136

# whose checker succeeded before we stored its state is

3137

# assumed to have successfully run all checkers during

3138

# downtime.

3139

if client["enabled"]:

3140

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

3141

if not client["last_checked_ok"]:

3142

logger.warning(

3143

"disabling client {} - Client never "

3144

"performed a successful checker".format(

3145

client_name))

3146

client["enabled"] = False

3147

elif client["last_checker_status"] != 0:

3148

logger.warning(

3149

"disabling client {} - Client last"

3150

" checker failed with error code"

3151

" {}".format(

3152

client_name,

3153

client["last_checker_status"]))

3154

client["enabled"] = False

3155

else:

3156

client["expires"] = (

3157

datetime.datetime.utcnow()

3158

+ client["timeout"])

3159

logger.debug("Last checker succeeded,"

3160

" keeping {} enabled".format(

3161

client_name))

1968

3162

try:

1969

yield (name, special_settings[name]())

1970

except KeyError:

1971

yield (name, value)

1972

1973

tcp_server.clients.update(set(

1974

client_class(name = section,

1975

config= dict(client_config_items(

1976

client_config, section)))

1977

for section in client_config.sections()))

3163

client["secret"] = pgp.decrypt(

3164

client["encrypted_secret"],

3165

client_settings[client_name]["secret"])

3166

except PGPError:

3167

# If decryption fails, we use secret from new settings

3168

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

3169

client_name))

3170

client["secret"] = (client_settings[client_name]

3171

["secret"])

3172

3173

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

3174

for client_name in (set(old_client_settings)

3175

- set(client_settings)):

3176

del clients_data[client_name]

3177

for client_name in (set(client_settings)

3178

- set(old_client_settings)):

3179

clients_data[client_name] = client_settings[client_name]

3180

3181

# Create all client objects

3182

for client_name, client in clients_data.items():

3183

tcp_server.clients[client_name] = client_class(

3184

name = client_name,

3185

settings = client,

3186

server_settings = server_settings)

3187

1978

3188

if not tcp_server.clients:

1979

3189

logger.warning("No clients defined")

1980

1981

if not debug:

1982

try:

1983

with pidfile:

1984

pid = os.getpid()

1985

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

1986

del pidfile

1987

except IOError:

1988

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

1989

pidfilename, pid)

1990

except NameError:

1991

# "pidfile" was never created

1992

pass

3190

3191

if not foreground:

3192

if pidfile is not None:

3193

pid = os.getpid()

3194

try:

3195

with pidfile:

3196

print(pid, file=pidfile)

3197

except IOError:

3198

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

3199

pidfilename, pid)

3200

del pidfile

1993

3201

del pidfilename

3202

3203

for termsig in (signal.SIGHUP, signal.SIGTERM):

3204

GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,

3205

lambda: main_loop.quit() and False)

3206

3207

if use_dbus:

1994

3208

1995

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

1996

1997

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

1998

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

1999

2000

if use_dbus:

2001

class MandosDBusService(dbus.service.Object):

3209

@alternate_dbus_interfaces(

3210

{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })

3211

class MandosDBusService(DBusObjectWithObjectManager):

2002

3212

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

3213

2003

3214

def __init__(self):

2004

3215

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

2005

_interface = "se.bsnet.fukt.Mandos"

3216

3217

_interface = "se.recompile.Mandos"

2006

3218

2007

3219

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

2008

3220

def ClientAdded(self, objpath):

2014

3226

"D-Bus signal"

2015

3227

pass

2016

3228

3229

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

3230

"true"})

2017

3231

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

2018

3232

def ClientRemoved(self, objpath, name):

2019

3233

"D-Bus signal"

2020

3234

pass

2021

3235

3236

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

3237

"true"})

2022

3238

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

2023

3239

def GetAllClients(self):

2024

3240

"D-Bus method"

2025

return dbus.Array(c.dbus_object_path

2026

for c in tcp_server.clients)

3241

return dbus.Array(c.dbus_object_path for c in

3242

tcp_server.clients.values())

2027

3243

3244

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

3245

"true"})

2028

3246

@dbus.service.method(_interface,

2029

3247

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

2030

3248

def GetAllClientsWithProperties(self):

2031

3249

"D-Bus method"

2032

3250

return dbus.Dictionary(

2033

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

2034

for c in tcp_server.clients),

3251

{ c.dbus_object_path: c.GetAll(

3252

"se.recompile.Mandos.Client")

3253

for c in tcp_server.clients.values() },

2035

3254

signature="oa{sv}")

2036

3255

2037

3256

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

2038

3257

def RemoveClient(self, object_path):

2039

3258

"D-Bus method"

2040

for c in tcp_server.clients:

3259

for c in tcp_server.clients.values():

2041

3260

if c.dbus_object_path == object_path:

2042

tcp_server.clients.remove(c)

3261

del tcp_server.clients[c.name]

2043

3262

c.remove_from_connection()

2044

# Don't signal anything except ClientRemoved

3263

# Don't signal the disabling

2045

3264

c.disable(quiet=True)

2046

# Emit D-Bus signal

2047

self.ClientRemoved(object_path, c.name)

3265

# Emit D-Bus signal for removal

3266

self.client_removed_signal(c)

2048

3267

return

2049

3268

raise KeyError(object_path)

2050

3269

2051

3270

del _interface

3271

3272

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

3273

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

3274

def GetManagedObjects(self):

3275

"""D-Bus method"""

3276

return dbus.Dictionary(

3277

{ client.dbus_object_path:

3278

dbus.Dictionary(

3279

{ interface: client.GetAll(interface)

3280

for interface in

3281

client._get_all_interface_names()})

3282

for client in tcp_server.clients.values()})

3283

3284

def client_added_signal(self, client):

3285

"""Send the new standard signal and the old signal"""

3286

if use_dbus:

3287

# New standard signal

3288

self.InterfacesAdded(

3289

client.dbus_object_path,

3290

dbus.Dictionary(

3291

{ interface: client.GetAll(interface)

3292

for interface in

3293

client._get_all_interface_names()}))

3294

# Old signal

3295

self.ClientAdded(client.dbus_object_path)

3296

3297

def client_removed_signal(self, client):

3298

"""Send the new standard signal and the old signal"""

3299

if use_dbus:

3300

# New standard signal

3301

self.InterfacesRemoved(

3302

client.dbus_object_path,

3303

client._get_all_interface_names())

3304

# Old signal

3305

self.ClientRemoved(client.dbus_object_path,

3306

client.name)

2052

3307

2053

class MandosDBusServiceTransitional(MandosDBusService):

2054

__metaclass__ = transitional_dbus_metaclass

2055

mandos_dbus_service = MandosDBusServiceTransitional()

3308

mandos_dbus_service = MandosDBusService()

2056

3309

2057

3310

def cleanup():

2058

3311

"Cleanup function; run on exit"

2059

service.cleanup()

2060

3312

if zeroconf:

3313

service.cleanup()

3314

3315

multiprocessing.active_children()

3316

wnull.close()

3317

if not (tcp_server.clients or client_settings):

3318

return

3319

3320

# Store client before exiting. Secrets are encrypted with key

3321

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

3322

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

3323

clients = {}

3324

with PGPEngine() as pgp:

3325

for client in tcp_server.clients.values():

3326

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

3327

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

3328

key)

3329

client_dict = {}

3330

3331

# A list of attributes that can not be pickled

3332

# + secret.

3333

exclude = { "bus", "changedstate", "secret",

3334

"checker", "server_settings" }

3335

for name, typ in inspect.getmembers(dbus.service

3336

.Object):

3337

exclude.add(name)

3338

3339

client_dict["encrypted_secret"] = (client

3340

.encrypted_secret)

3341

for attr in client.client_structure:

3342

if attr not in exclude:

3343

client_dict[attr] = getattr(client, attr)

3344

3345

clients[client.name] = client_dict

3346

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

3347

3348

try:

3349

with tempfile.NamedTemporaryFile(

3350

mode='wb',

3351

suffix=".pickle",

3352

prefix='clients-',

3353

dir=os.path.dirname(stored_state_path),

3354

delete=False) as stored_state:

3355

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

3356

protocol = 2)

3357

tempname = stored_state.name

3358

os.rename(tempname, stored_state_path)

3359

except (IOError, OSError) as e:

3360

if not debug:

3361

try:

3362

os.remove(tempname)

3363

except NameError:

3364

pass

3365

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

3366

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

3367

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

3368

else:

3369

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

3370

exc_info=e)

3371

raise

3372

3373

# Delete all clients, and settings from config

2061

3374

while tcp_server.clients:

2062

client = tcp_server.clients.pop()

3375

name, client = tcp_server.clients.popitem()

2063

3376

if use_dbus:

2064

3377

client.remove_from_connection()

2065

client.disable_hook = None

2066

# Don't signal anything except ClientRemoved

3378

# Don't signal the disabling

2067

3379

client.disable(quiet=True)

3380

# Emit D-Bus signal for removal

2068

3381

if use_dbus:

2069

# Emit D-Bus signal

2070

mandos_dbus_service.ClientRemoved(client.dbus_object_path,

2071

client.name)

3382

mandos_dbus_service.client_removed_signal(client)

3383

client_settings.clear()

2072

3384

2073

3385

atexit.register(cleanup)

2074

3386

2075

for client in tcp_server.clients:

3387

for client in tcp_server.clients.values():

2076

3388

if use_dbus:

2077

# Emit D-Bus signal

2078

mandos_dbus_service.ClientAdded(client.dbus_object_path)

2079

client.enable()

3389

# Emit D-Bus signal for adding

3390

mandos_dbus_service.client_added_signal(client)

3391

# Need to initiate checking of clients

3392

if client.enabled:

3393

client.init_checker()

2080

3394

2081

3395

tcp_server.enable()

2082

3396

tcp_server.server_activate()

2083

3397

2084

3398

# Find out what port we got

2085

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

3399

if zeroconf:

3400

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

2086

3401

if use_ipv6:

2087

3402

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

2088

" flowinfo %d, scope_id %d"

2089

% tcp_server.socket.getsockname())

3403

" flowinfo %d, scope_id %d",

3404

*tcp_server.socket.getsockname())

2090

3405

else: # IPv4

2091

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

2092

% tcp_server.socket.getsockname())

3406

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

3407

*tcp_server.socket.getsockname())

2093

3408

2094

3409

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

2095

3410

2096

3411

try:

2097

# From the Avahi example code

2098

try:

2099

service.activate()

2100

except dbus.exceptions.DBusException as error:

2101

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

2102

cleanup()

2103

sys.exit(1)

2104

# End of Avahi example code

3412

if zeroconf:

3413

# From the Avahi example code

3414

try:

3415

service.activate()

3416

except dbus.exceptions.DBusException as error:

3417

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

3418

cleanup()

3419

sys.exit(1)

3420

# End of Avahi example code

2105

3421

2106

gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,

2107

lambda *args, **kwargs:

2108

(tcp_server.handle_request

2109

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

3422

GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,

3423

lambda *args, **kwargs:

3424

(tcp_server.handle_request

3425

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

2110

3426

2111

3427

logger.debug("Starting main loop")

2112

3428

main_loop.run()

2113

3429

except AvahiError as error:

2114

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

3430

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

2115

3431

cleanup()

2116

3432

sys.exit(1)

2117

3433

except KeyboardInterrupt: