/mandos/trunk : revision 24.1.171

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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@recompile.se>.

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

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#

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from __future__ import (division, absolute_import, print_function,

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unicode_literals)

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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 SocketServer as 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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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 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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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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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 cPickle as 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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from gi.repository import GLib

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import gobject

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import avahi

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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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if sys.version_info.major == 2:

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str = unicode

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version = "1.7.7"

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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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# Only GPG version 1 has the --no-use-agent option.

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if self.gpg == "gpg" or self.gpg.endswith("/gpg"):

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self.gnupgargs.append("--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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version = "1.3.0"

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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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class AvahiError(Exception):

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

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self.value = value

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

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**kwargs)

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

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

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port: integer; what port to announce

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TXT: list of strings; TXT record for the service

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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,

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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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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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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, remove=True):

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def rename(self):

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

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if self.rename_count >= self.max_renames:

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

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" after %i retries, exiting.",

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self.rename_count)

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raise AvahiServiceError("Too many renames")

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

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

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self.name)

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if remove:

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self.remove()

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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))

169

self.remove()

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try:

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self.add()

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except dbus.exceptions.DBusException as error:

362

if (error.get_dbus_name()

363

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

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

365

return self.rename(remove=False)

366

else:

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

368

self.cleanup()

369

os._exit(1)

370

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

174

self.cleanup()

175

os._exit(1)

176

self.rename_count += 1

371

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def remove(self):

372

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

373

179

if self.entry_group_state_changed_match is not None:

375

181

self.entry_group_state_changed_match = None

376

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if self.group is not None:

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self.group.Reset()

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379

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def add(self):

380

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

381

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self.remove()

386

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avahi.DBUS_INTERFACE_ENTRY_GROUP)

387

192

self.entry_group_state_changed_match = (

388

193

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))

390

195

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

391

196

self.name, self.type)

392

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self.group.AddService(

398

203

dbus.UInt16(self.port),

399

204

avahi.string_array_to_txt_array(self.TXT))

400

205

self.group.Commit()

401

402

206

def entry_group_state_changed(self, state, error):

403

207

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

404

208

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

410

214

self.rename()

411

215

elif state == avahi.ENTRY_GROUP_FAILURE:

412

216

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

413

str(error))

414

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

415

217

unicode(error))

218

raise AvahiGroupError("State changed: %s"

219

% unicode(error))

416

220

def cleanup(self):

417

221

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

418

222

if self.group is not None:

419

223

try:

420

224

self.group.Free()

421

225

except (dbus.exceptions.UnknownMethodException,

422

dbus.exceptions.DBusException):

226

dbus.exceptions.DBusException) as e:

423

227

pass

424

228

self.group = None

425

229

self.remove()

426

427

230

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

428

231

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

429

232

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

430

bad_states = {

431

avahi.SERVER_INVALID: "Zeroconf server invalid",

432

avahi.SERVER_REGISTERING: None,

433

avahi.SERVER_COLLISION: "Zeroconf server name collision",

434

avahi.SERVER_FAILURE: "Zeroconf server failure",

435

}

233

bad_states = { avahi.SERVER_INVALID:

234

"Zeroconf server invalid",

235

avahi.SERVER_REGISTERING: None,

236

avahi.SERVER_COLLISION:

237

"Zeroconf server name collision",

238

avahi.SERVER_FAILURE:

239

"Zeroconf server failure" }

436

240

if state in bad_states:

437

241

if bad_states[state] is not None:

438

242

if error is None:

441

245

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

442

246

self.cleanup()

443

247

elif state == avahi.SERVER_RUNNING:

444

try:

445

self.add()

446

except dbus.exceptions.DBusException as error:

447

if (error.get_dbus_name()

448

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

449

logger.info("Local Zeroconf service name"

450

" collision.")

451

return self.rename(remove=False)

452

else:

453

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

454

self.cleanup()

455

os._exit(1)

248

self.add()

456

249

else:

457

250

if error is None:

458

251

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

459

252

else:

460

253

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

461

462

254

def activate(self):

463

255

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

464

256

if self.server is None:

468

260

follow_name_owner_changes=True),

469

261

avahi.DBUS_INTERFACE_SERVER)

470

262

self.server.connect_to_signal("StateChanged",

471

self.server_state_changed)

263

self.server_state_changed)

472

264

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

473

265

474

266

475

class AvahiServiceToSyslog(AvahiService):

476

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

477

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

478

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

479

syslogger.setFormatter(logging.Formatter(

480

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

481

.format(self.name)))

482

return ret

483

484

# Pretend that we have a GnuTLS module

485

class GnuTLS(object):

486

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

487

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

488

489

_library = ctypes.cdll.LoadLibrary(

490

ctypes.util.find_library("gnutls"))

491

_need_version = b"3.3.0"

492

def __init__(self):

493

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

494

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

495

# happens.

496

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

497

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

498

.format(self._need_version))

499

500

# Unless otherwise indicated, the constants and types below are

501

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

502

503

# Constants

504

E_SUCCESS = 0

505

E_INTERRUPTED = -52

506

E_AGAIN = -28

507

CRT_OPENPGP = 2

508

CLIENT = 2

509

SHUT_RDWR = 0

510

CRD_CERTIFICATE = 1

511

E_NO_CERTIFICATE_FOUND = -49

512

OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h

513

514

# Types

515

class session_int(ctypes.Structure):

516

_fields_ = []

517

session_t = ctypes.POINTER(session_int)

518

class certificate_credentials_st(ctypes.Structure):

519

_fields_ = []

520

certificate_credentials_t = ctypes.POINTER(

521

certificate_credentials_st)

522

certificate_type_t = ctypes.c_int

523

class datum_t(ctypes.Structure):

524

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

525

('size', ctypes.c_uint)]

526

class openpgp_crt_int(ctypes.Structure):

527

_fields_ = []

528

openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)

529

openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h

530

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

531

credentials_type_t = ctypes.c_int

532

transport_ptr_t = ctypes.c_void_p

533

close_request_t = ctypes.c_int

534

535

# Exceptions

536

class Error(Exception):

537

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

538

# exception might be raised from within GnuTLS.__init__,

539

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

540

# global variable has happened.

541

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

542

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

543

# code is passed, convert it to a string with

544

# gnutls.strerror()

545

self.code = code

546

if message is None and code is not None:

547

message = GnuTLS.strerror(code)

548

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

549

message, *args)

550

551

class CertificateSecurityError(Error):

552

pass

553

554

# Classes

555

class Credentials(object):

556

def __init__(self):

557

self._c_object = gnutls.certificate_credentials_t()

558

gnutls.certificate_allocate_credentials(

559

ctypes.byref(self._c_object))

560

self.type = gnutls.CRD_CERTIFICATE

561

562

def __del__(self):

563

gnutls.certificate_free_credentials(self._c_object)

564

565

class ClientSession(object):

566

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

567

self._c_object = gnutls.session_t()

568

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

569

gnutls.set_default_priority(self._c_object)

570

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

571

gnutls.handshake_set_private_extensions(self._c_object,

572

True)

573

self.socket = socket

574

if credentials is None:

575

credentials = gnutls.Credentials()

576

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

577

ctypes.cast(credentials._c_object,

578

ctypes.c_void_p))

579

self.credentials = credentials

580

581

def __del__(self):

582

gnutls.deinit(self._c_object)

583

584

def handshake(self):

585

return gnutls.handshake(self._c_object)

586

587

def send(self, data):

588

data = bytes(data)

589

data_len = len(data)

590

while data_len > 0:

591

data_len -= gnutls.record_send(self._c_object,

592

data[-data_len:],

593

data_len)

594

595

def bye(self):

596

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

597

598

# Error handling functions

599

def _error_code(result):

600

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

601

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

602

if result >= 0:

603

return result

604

if result == gnutls.E_NO_CERTIFICATE_FOUND:

605

raise gnutls.CertificateSecurityError(code = result)

606

raise gnutls.Error(code = result)

607

608

def _retry_on_error(result, func, arguments):

609

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

610

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

611

while result < 0:

612

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

613

return _error_code(result)

614

result = func(*arguments)

615

return result

616

617

# Unless otherwise indicated, the function declarations below are

618

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

619

620

# Functions

621

priority_set_direct = _library.gnutls_priority_set_direct

622

priority_set_direct.argtypes = [session_t, ctypes.c_char_p,

623

ctypes.POINTER(ctypes.c_char_p)]

624

priority_set_direct.restype = _error_code

625

626

init = _library.gnutls_init

627

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

628

init.restype = _error_code

629

630

set_default_priority = _library.gnutls_set_default_priority

631

set_default_priority.argtypes = [session_t]

632

set_default_priority.restype = _error_code

633

634

record_send = _library.gnutls_record_send

635

record_send.argtypes = [session_t, ctypes.c_void_p,

636

ctypes.c_size_t]

637

record_send.restype = ctypes.c_ssize_t

638

record_send.errcheck = _retry_on_error

639

640

certificate_allocate_credentials = (

641

_library.gnutls_certificate_allocate_credentials)

642

certificate_allocate_credentials.argtypes = [

643

ctypes.POINTER(certificate_credentials_t)]

644

certificate_allocate_credentials.restype = _error_code

645

646

certificate_free_credentials = (

647

_library.gnutls_certificate_free_credentials)

648

certificate_free_credentials.argtypes = [certificate_credentials_t]

649

certificate_free_credentials.restype = None

650

651

handshake_set_private_extensions = (

652

_library.gnutls_handshake_set_private_extensions)

653

handshake_set_private_extensions.argtypes = [session_t,

654

ctypes.c_int]

655

handshake_set_private_extensions.restype = None

656

657

credentials_set = _library.gnutls_credentials_set

658

credentials_set.argtypes = [session_t, credentials_type_t,

659

ctypes.c_void_p]

660

credentials_set.restype = _error_code

661

662

strerror = _library.gnutls_strerror

663

strerror.argtypes = [ctypes.c_int]

664

strerror.restype = ctypes.c_char_p

665

666

certificate_type_get = _library.gnutls_certificate_type_get

667

certificate_type_get.argtypes = [session_t]

668

certificate_type_get.restype = _error_code

669

670

certificate_get_peers = _library.gnutls_certificate_get_peers

671

certificate_get_peers.argtypes = [session_t,

672

ctypes.POINTER(ctypes.c_uint)]

673

certificate_get_peers.restype = ctypes.POINTER(datum_t)

674

675

global_set_log_level = _library.gnutls_global_set_log_level

676

global_set_log_level.argtypes = [ctypes.c_int]

677

global_set_log_level.restype = None

678

679

global_set_log_function = _library.gnutls_global_set_log_function

680

global_set_log_function.argtypes = [log_func]

681

global_set_log_function.restype = None

682

683

deinit = _library.gnutls_deinit

684

deinit.argtypes = [session_t]

685

deinit.restype = None

686

687

handshake = _library.gnutls_handshake

688

handshake.argtypes = [session_t]

689

handshake.restype = _error_code

690

handshake.errcheck = _retry_on_error

691

692

transport_set_ptr = _library.gnutls_transport_set_ptr

693

transport_set_ptr.argtypes = [session_t, transport_ptr_t]

694

transport_set_ptr.restype = None

695

696

bye = _library.gnutls_bye

697

bye.argtypes = [session_t, close_request_t]

698

bye.restype = _error_code

699

bye.errcheck = _retry_on_error

700

701

check_version = _library.gnutls_check_version

702

check_version.argtypes = [ctypes.c_char_p]

703

check_version.restype = ctypes.c_char_p

704

705

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

706

707

openpgp_crt_init = _library.gnutls_openpgp_crt_init

708

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

709

openpgp_crt_init.restype = _error_code

710

711

openpgp_crt_import = _library.gnutls_openpgp_crt_import

712

openpgp_crt_import.argtypes = [openpgp_crt_t,

713

ctypes.POINTER(datum_t),

714

openpgp_crt_fmt_t]

715

openpgp_crt_import.restype = _error_code

716

717

openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self

718

openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,

719

ctypes.POINTER(ctypes.c_uint)]

720

openpgp_crt_verify_self.restype = _error_code

721

722

openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit

723

openpgp_crt_deinit.argtypes = [openpgp_crt_t]

724

openpgp_crt_deinit.restype = None

725

726

openpgp_crt_get_fingerprint = (

727

_library.gnutls_openpgp_crt_get_fingerprint)

728

openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,

729

ctypes.c_void_p,

730

ctypes.POINTER(

731

ctypes.c_size_t)]

732

openpgp_crt_get_fingerprint.restype = _error_code

733

734

# Remove non-public functions

735

del _error_code, _retry_on_error

736

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

737

gnutls = GnuTLS()

738

739

def call_pipe(connection, # : multiprocessing.Connection

740

func, *args, **kwargs):

741

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

742

743

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

744

return value on the provided multiprocessing.Connection.

745

"""

746

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

747

connection.close()

748

749

267

class Client(object):

750

268

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

751

269

752

270

Attributes:

753

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

271

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

754

272

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

755

273

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

756

274

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

757

275

to see if the client lives.

758

276

'None' if no process is running.

759

checker_callback_tag: a GLib event source tag, or None

277

checker_callback_tag: a gobject event source tag, or None

760

278

checker_command: string; External command which is run to check

761

279

if client lives. %() expansions are done at

762

280

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

763

281

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

764

checker_initiator_tag: a GLib event source tag, or None

282

checker_initiator_tag: a gobject event source tag, or None

765

283

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

766

client_structure: Object describing what attributes a client has

767

and is used for storing the client at exit

768

284

current_checker_command: string; current running checker_command

769

disable_initiator_tag: a GLib event source tag, or None

285

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

286

disable_initiator_tag: a gobject event source tag, or None

770

287

enabled: bool()

771

288

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

772

289

uniquely identify the client

774

291

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

775

292

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

776

293

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

777

last_checker_status: integer between 0 and 255 reflecting exit

778

status of last checker. -1 reflects crashed

779

checker, -2 means no checker completed yet.

780

last_checker_signal: The signal which killed the last checker, if

781

last_checker_status is -1

782

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

294

last_enabled: datetime.datetime(); (UTC)

783

295

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

784

296

D-Bus identifiers

785

297

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

786

298

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

787

299

until this client is disabled

788

extended_timeout: extra long timeout when secret has been sent

789

300

runtime_expansions: Allowed attributes for runtime expansion.

790

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

791

disabled, or None

792

server_settings: The server_settings dict from main()

793

301

"""

794

302

795

303

runtime_expansions = ("approval_delay", "approval_duration",

796

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

797

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

798

"last_approval_request", "last_checked_ok",

304

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

305

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

799

306

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

800

client_defaults = {

801

"timeout": "PT5M",

802

"extended_timeout": "PT15M",

803

"interval": "PT2M",

804

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

805

"host": "",

806

"approval_delay": "PT0S",

807

"approval_duration": "PT1S",

808

"approved_by_default": "True",

809

"enabled": "True",

810

}

811

307

812

308

@staticmethod

813

def config_parser(config):

814

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

815

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

816

with exceptions for any special settings as defined above.

817

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

818

value given the same arguments.

819

"""

820

settings = {}

821

for client_name in config.sections():

822

section = dict(config.items(client_name))

823

client = settings[client_name] = {}

824

825

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

826

# Reformat values from string types to Python types

827

client["approved_by_default"] = config.getboolean(

828

client_name, "approved_by_default")

829

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

830

"enabled")

831

832

# Uppercase and remove spaces from fingerprint for later

833

# comparison purposes with return value from the

834

# fingerprint() function

835

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

836

.replace(" ", ""))

837

if "secret" in section:

838

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

839

.encode("utf-8"),

840

"base64")

841

elif "secfile" in section:

842

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

843

(section["secfile"])),

844

"rb") as secfile:

845

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

846

else:

847

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

848

.format(section))

849

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

850

client["extended_timeout"] = string_to_delta(

851

section["extended_timeout"])

852

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

853

client["approval_delay"] = string_to_delta(

854

section["approval_delay"])

855

client["approval_duration"] = string_to_delta(

856

section["approval_duration"])

857

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

858

client["last_approval_request"] = None

859

client["last_checked_ok"] = None

860

client["last_checker_status"] = -2

861

862

return settings

863

864

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

309

def _timedelta_to_milliseconds(td):

310

"Convert a datetime.timedelta() to milliseconds"

311

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

312

+ (td.seconds * 1000)

313

+ (td.microseconds // 1000))

314

315

def timeout_milliseconds(self):

316

"Return the 'timeout' attribute in milliseconds"

317

return self._timedelta_to_milliseconds(self.timeout)

318

319

def interval_milliseconds(self):

320

"Return the 'interval' attribute in milliseconds"

321

return self._timedelta_to_milliseconds(self.interval)

322

323

def approval_delay_milliseconds(self):

324

return self._timedelta_to_milliseconds(self.approval_delay)

325

326

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

327

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

328

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

329

attribute."""

865

330

self.name = name

866

if server_settings is None:

867

server_settings = {}

868

self.server_settings = server_settings

869

# adding all client settings

870

for setting, value in settings.items():

871

setattr(self, setting, value)

872

873

if self.enabled:

874

if not hasattr(self, "last_enabled"):

875

self.last_enabled = datetime.datetime.utcnow()

876

if not hasattr(self, "expires"):

877

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

878

+ self.timeout)

879

else:

880

self.last_enabled = None

881

self.expires = None

882

331

if config is None:

332

config = {}

883

333

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

334

# Uppercase and remove spaces from fingerprint for later

335

# comparison purposes with return value from the fingerprint()

336

# function

337

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

338

.replace(" ", ""))

884

339

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

885

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

886

datetime.datetime.utcnow())

887

888

# attributes specific for this server instance

340

if "secret" in config:

341

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

342

elif "secfile" in config:

343

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

344

(config["secfile"])),

345

"rb") as secfile:

346

self.secret = secfile.read()

347

else:

348

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

349

% self.name)

350

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

351

self.created = datetime.datetime.utcnow()

352

self.enabled = False

353

self.last_approval_request = None

354

self.last_enabled = None

355

self.last_checked_ok = None

356

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

357

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

358

self.disable_hook = disable_hook

889

359

self.checker = None

890

360

self.checker_initiator_tag = None

891

361

self.disable_initiator_tag = None

892

362

self.checker_callback_tag = None

363

self.checker_command = config["checker"]

893

364

self.current_checker_command = None

894

self.approved = None

365

self.last_connect = None

366

self._approved = None

367

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

368

True)

895

369

self.approvals_pending = 0

896

self.changedstate = multiprocessing_manager.Condition(

897

multiprocessing_manager.Lock())

898

self.client_structure = [attr

899

for attr in self.__dict__.keys()

900

if not attr.startswith("_")]

901

self.client_structure.append("client_structure")

902

903

for name, t in inspect.getmembers(

904

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

905

if not name.startswith("_"):

906

self.client_structure.append(name)

370

self.approval_delay = string_to_delta(

371

config["approval_delay"])

372

self.approval_duration = string_to_delta(

373

config["approval_duration"])

374

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

907

375

908

# Send notice to process children that client state has changed

909

376

def send_changedstate(self):

910

with self.changedstate:

911

self.changedstate.notify_all()

912

377

self.changedstate.acquire()

378

self.changedstate.notify_all()

379

self.changedstate.release()

380

913

381

def enable(self):

914

382

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

915

383

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

916

384

# Already enabled

917

385

return

918

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

919

self.enabled = True

386

self.send_changedstate()

920

387

self.last_enabled = datetime.datetime.utcnow()

921

self.init_checker()

922

self.send_changedstate()

388

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

389

# and every interval from then on.

390

self.checker_initiator_tag = (gobject.timeout_add

391

(self.interval_milliseconds(),

392

self.start_checker))

393

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

394

self.disable_initiator_tag = (gobject.timeout_add

395

(self.timeout_milliseconds(),

396

self.disable))

397

self.enabled = True

398

# Also start a new checker *right now*.

399

self.start_checker()

923

400

924

401

def disable(self, quiet=True):

925

402

"""Disable this client."""

926

403

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

927

404

return False

928

405

if not quiet:

406

self.send_changedstate()

407

if not quiet:

929

408

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

930

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

931

GLib.source_remove(self.disable_initiator_tag)

409

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

410

gobject.source_remove(self.disable_initiator_tag)

932

411

self.disable_initiator_tag = None

933

self.expires = None

934

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

935

GLib.source_remove(self.checker_initiator_tag)

412

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

413

gobject.source_remove(self.checker_initiator_tag)

936

414

self.checker_initiator_tag = None

937

415

self.stop_checker()

416

if self.disable_hook:

417

self.disable_hook(self)

938

418

self.enabled = False

939

if not quiet:

940

self.send_changedstate()

941

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

419

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

942

420

return False

943

421

944

422

def __del__(self):

423

self.disable_hook = None

945

424

self.disable()

946

425

947

def init_checker(self):

948

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

949

# and every interval from then on.

950

if self.checker_initiator_tag is not None:

951

GLib.source_remove(self.checker_initiator_tag)

952

self.checker_initiator_tag = GLib.timeout_add(

953

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

954

self.start_checker)

955

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

956

if self.disable_initiator_tag is not None:

957

GLib.source_remove(self.disable_initiator_tag)

958

self.disable_initiator_tag = GLib.timeout_add(

959

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

960

# Also start a new checker *right now*.

961

self.start_checker()

962

963

def checker_callback(self, source, condition, connection,

964

command):

426

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

965

427

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

966

428

self.checker_callback_tag = None

967

429

self.checker = None

968

# Read return code from connection (see call_pipe)

969

returncode = connection.recv()

970

connection.close()

971

972

if returncode >= 0:

973

self.last_checker_status = returncode

974

self.last_checker_signal = None

975

if self.last_checker_status == 0:

430

if os.WIFEXITED(condition):

431

exitstatus = os.WEXITSTATUS(condition)

432

if exitstatus == 0:

976

433

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

977

434

vars(self))

978

435

self.checked_ok()

979

436

else:

980

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

437

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

438

vars(self))

981

439

else:

982

self.last_checker_status = -1

983

self.last_checker_signal = -returncode

984

440

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

985

441

vars(self))

986

return False

987

442

988

443

def checked_ok(self):

989

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

444

"""Bump up the timeout for this client.

445

446

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

447

alive and well.

448

"""

990

449

self.last_checked_ok = datetime.datetime.utcnow()

991

self.last_checker_status = 0

992

self.last_checker_signal = None

993

self.bump_timeout()

994

995

def bump_timeout(self, timeout=None):

996

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

997

if timeout is None:

998

timeout = self.timeout

999

if self.disable_initiator_tag is not None:

1000

GLib.source_remove(self.disable_initiator_tag)

1001

self.disable_initiator_tag = None

1002

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

1003

self.disable_initiator_tag = GLib.timeout_add(

1004

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

1005

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

450

gobject.source_remove(self.disable_initiator_tag)

451

self.disable_initiator_tag = (gobject.timeout_add

452

(self.timeout_milliseconds(),

453

self.disable))

1006

454

1007

455

def need_approval(self):

1008

456

self.last_approval_request = datetime.datetime.utcnow()

1013

461

If a checker already exists, leave it running and do

1014

462

nothing."""

1015

463

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

1016

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

1017

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

1018

# would inevitably timeout, since no checker would get a

1019

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

464

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

465

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

466

# client would inevitably timeout, since no checker would get

467

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

1020

468

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

1021

469

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

1022

470

# should be.

1023

471

1024

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

1025

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

1026

self.checker.join()

1027

self.checker = None

472

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

473

try:

474

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

475

except (AttributeError, OSError) as error:

476

if (isinstance(error, OSError)

477

and error.errno != errno.ECHILD):

478

raise error

479

else:

480

if pid:

481

logger.warning("Checker was a zombie")

482

gobject.source_remove(self.checker_callback_tag)

483

self.checker_callback(pid, status,

484

self.current_checker_command)

1028

485

# Start a new checker if needed

1029

486

if self.checker is None:

1030

# Escape attributes for the shell

1031

escaped_attrs = {

1032

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

1033

for attr in self.runtime_expansions }

1034

487

try:

1035

command = self.checker_command % escaped_attrs

1036

except TypeError as error:

1037

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

1038

self.checker_command,

1039

exc_info=error)

1040

return True # Try again later

488

# In case checker_command has exactly one % operator

489

command = self.checker_command % self.host

490

except TypeError:

491

# Escape attributes for the shell

492

escaped_attrs = dict(

493

(attr,

494

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

495

errors=

496

'replace')))

497

for attr in

498

self.runtime_expansions)

499

500

try:

501

command = self.checker_command % escaped_attrs

502

except TypeError as error:

503

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

504

' %s', self.checker_command, error)

505

return True # Try again later

1041

506

self.current_checker_command = command

1042

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

1043

self.name)

1044

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

1045

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

1046

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

1047

# always replaced by /dev/null.)

1048

# The exception is when not debugging but nevertheless

1049

# running in the foreground; use the previously

1050

# created wnull.

1051

popen_args = { "close_fds": True,

1052

"shell": True,

1053

"cwd": "/" }

1054

if (not self.server_settings["debug"]

1055

and self.server_settings["foreground"]):

1056

popen_args.update({"stdout": wnull,

1057

"stderr": wnull })

1058

pipe = multiprocessing.Pipe(duplex = False)

1059

self.checker = multiprocessing.Process(

1060

target = call_pipe,

1061

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

1062

kwargs = popen_args)

1063

self.checker.start()

1064

self.checker_callback_tag = GLib.io_add_watch(

1065

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

1066

self.checker_callback, pipe[0], command)

1067

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

507

try:

508

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

509

command, self.name)

510

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

511

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

512

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

513

# always replaced by /dev/null.)

514

self.checker = subprocess.Popen(command,

515

close_fds=True,

516

shell=True, cwd="/")

517

self.checker_callback_tag = (gobject.child_watch_add

518

(self.checker.pid,

519

self.checker_callback,

520

data=command))

521

# The checker may have completed before the gobject

522

# watch was added. Check for this.

523

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

524

if pid:

525

gobject.source_remove(self.checker_callback_tag)

526

self.checker_callback(pid, status, command)

527

except OSError as error:

528

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

529

error)

530

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

1068

531

return True

1069

532

1070

533

def stop_checker(self):

1071

534

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

1072

535

if self.checker_callback_tag:

1073

GLib.source_remove(self.checker_callback_tag)

536

gobject.source_remove(self.checker_callback_tag)

1074

537

self.checker_callback_tag = None

1075

538

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

1076

539

return

1077

540

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

1078

self.checker.terminate()

541

try:

542

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

543

#time.sleep(0.5)

544

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

545

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

546

except OSError as error:

547

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

548

raise

1079

549

self.checker = None

1080

550

1081

1082

def dbus_service_property(dbus_interface,

1083

signature="v",

1084

access="readwrite",

1085

byte_arrays=False):

551

def dbus_service_property(dbus_interface, signature="v",

552

access="readwrite", byte_arrays=False):

1086

553

"""Decorators for marking methods of a DBusObjectWithProperties to

1087

554

become properties on the D-Bus.

1088

555

1097

564

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

1098

565

if byte_arrays and signature != "ay":

1099

566

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

1100

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

1101

567

" signature %r" % signature)

1102

568

def decorator(func):

1103

569

func._dbus_is_property = True

1104

570

func._dbus_interface = dbus_interface

1109

575

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

1110

576

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

1111

577

return func

1112

1113

return decorator

1114

1115

1116

def dbus_interface_annotations(dbus_interface):

1117

"""Decorator for marking functions returning interface annotations

1118

1119

Usage:

1120

1121

@dbus_interface_annotations("org.example.Interface")

1122

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

1123

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

1124

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

1125

"false"}

1126

"""

1127

1128

def decorator(func):

1129

func._dbus_is_interface = True

1130

func._dbus_interface = dbus_interface

1131

func._dbus_name = dbus_interface

1132

return func

1133

1134

return decorator

1135

1136

1137

def dbus_annotations(annotations):

1138

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

1139

Usage:

1140

1141

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

1142

"org.freedesktop.DBus.Property."

1143

"EmitsChangedSignal": "false"})

1144

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

1145

access="r")

1146

def Property_dbus_property(self):

1147

return dbus.Boolean(False)

1148

1149

See also the DBusObjectWithAnnotations class.

1150

"""

1151

1152

def decorator(func):

1153

func._dbus_annotations = annotations

1154

return func

1155

1156

578

return decorator

1157

579

1158

580

1159

581

class DBusPropertyException(dbus.exceptions.DBusException):

1160

582

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

1161

583

"""

1162

pass

584

def __unicode__(self):

585

return unicode(str(self))

1163

586

1164

587

1165

588

class DBusPropertyAccessException(DBusPropertyException):

1174

597

pass

1175

598

1176

599

1177

class DBusObjectWithAnnotations(dbus.service.Object):

1178

"""A D-Bus object with annotations.

1179

1180

Classes inheriting from this can use the dbus_annotations

1181

decorator to add annotations to methods or signals.

1182

"""

1183

1184

@staticmethod

1185

def _is_dbus_thing(thing):

1186

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

1187

1188

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

1189

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

1190

"""

1191

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

1192

False)

1193

1194

def _get_all_dbus_things(self, thing):

1195

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

1196

"""

1197

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

1198

athing.__get__(self))

1199

for cls in self.__class__.__mro__

1200

for name, athing in

1201

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

1202

1203

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1204

out_signature = "s",

1205

path_keyword = 'object_path',

1206

connection_keyword = 'connection')

1207

def Introspect(self, object_path, connection):

1208

"""Overloading of standard D-Bus method.

1209

1210

Inserts annotation tags on methods and signals.

1211

"""

1212

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

1213

connection)

1214

try:

1215

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

1216

1217

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

1218

# Add annotation tags

1219

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

1220

for tag in if_tag.getElementsByTagName(typ):

1221

annots = dict()

1222

for name, prop in (self.

1223

_get_all_dbus_things(typ)):

1224

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

1225

and prop._dbus_interface

1226

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

1227

annots.update(getattr(

1228

prop, "_dbus_annotations", {}))

1229

for name, value in annots.items():

1230

ann_tag = document.createElement(

1231

"annotation")

1232

ann_tag.setAttribute("name", name)

1233

ann_tag.setAttribute("value", value)

1234

tag.appendChild(ann_tag)

1235

# Add interface annotation tags

1236

for annotation, value in dict(

1237

itertools.chain.from_iterable(

1238

annotations().items()

1239

for name, annotations

1240

in self._get_all_dbus_things("interface")

1241

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

1242

)).items():

1243

ann_tag = document.createElement("annotation")

1244

ann_tag.setAttribute("name", annotation)

1245

ann_tag.setAttribute("value", value)

1246

if_tag.appendChild(ann_tag)

1247

# Fix argument name for the Introspect method itself

1248

if (if_tag.getAttribute("name")

1249

== dbus.INTROSPECTABLE_IFACE):

1250

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

1251

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

1252

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

1253

if (arg.getAttribute("direction")

1254

== "out"):

1255

arg.setAttribute("name",

1256

"xml_data")

1257

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

1258

document.unlink()

1259

except (AttributeError, xml.dom.DOMException,

1260

xml.parsers.expat.ExpatError) as error:

1261

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

1262

exc_info=error)

1263

return xmlstring

1264

1265

1266

class DBusObjectWithProperties(DBusObjectWithAnnotations):

600

class DBusObjectWithProperties(dbus.service.Object):

1267

601

"""A D-Bus object with properties.

1268

602

1269

603

Classes inheriting from this can use the dbus_service_property

1270

604

decorator to expose methods as D-Bus properties. It exposes the

1271

605

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

1272

606

"""

1273

607

608

@staticmethod

609

def _is_dbus_property(obj):

610

return getattr(obj, "_dbus_is_property", False)

611

612

def _get_all_dbus_properties(self):

613

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

614

"""

615

return ((prop._dbus_name, prop)

616

for name, prop in

617

inspect.getmembers(self, self._is_dbus_property))

618

1274

619

def _get_dbus_property(self, interface_name, property_name):

1275

620

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

1276

621

property with the specified name and interface.

1277

622

"""

1278

for cls in self.__class__.__mro__:

1279

for name, value in inspect.getmembers(

1280

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

1281

if (value._dbus_name == property_name

1282

and value._dbus_interface == interface_name):

1283

return value.__get__(self)

1284

623

for name in (property_name,

624

property_name + "_dbus_property"):

625

prop = getattr(self, name, None)

626

if (prop is None

627

or not self._is_dbus_property(prop)

628

or prop._dbus_name != property_name

629

or (interface_name and prop._dbus_interface

630

and interface_name != prop._dbus_interface)):

631

continue

632

return prop

1285

633

# No such property

1286

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

1287

self.dbus_object_path, interface_name, property_name))

1288

1289

@classmethod

1290

def _get_all_interface_names(cls):

1291

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

1292

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

1293

"_dbus_interface", None)

1294

for x in (inspect.getmro(cls))

1295

for attr in dir(x))

1296

if name is not None)

1297

1298

@dbus.service.method(dbus.PROPERTIES_IFACE,

1299

in_signature="ss",

634

raise DBusPropertyNotFound(self.dbus_object_path + ":"

635

+ interface_name + "."

636

+ property_name)

637

638

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

1300

639

out_signature="v")

1301

640

def Get(self, interface_name, property_name):

1302

641

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

1320

659

# The byte_arrays option is not supported yet on

1321

660

# signatures other than "ay".

1322

661

if prop._dbus_signature != "ay":

1323

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

1324

"'ay' signature {!r}"

1325

.format(prop._dbus_signature))

1326

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

1327

for byte in value))

662

raise ValueError

663

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

664

for byte in value))

1328

665

prop(value)

1329

666

1330

@dbus.service.method(dbus.PROPERTIES_IFACE,

1331

in_signature="s",

667

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

1332

668

out_signature="a{sv}")

1333

669

def GetAll(self, interface_name):

1334

670

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

1335

671

standard.

1336

672

1337

673

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

1338

674

"""

1339

properties = {}

1340

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

675

all = {}

676

for name, prop in self._get_all_dbus_properties():

1341

677

if (interface_name

1342

678

and interface_name != prop._dbus_interface):

1343

679

# Interface non-empty but did not match

1347

683

continue

1348

684

value = prop()

1349

685

if not hasattr(value, "variant_level"):

1350

properties[name] = value

686

all[name] = value

1351

687

continue

1352

properties[name] = type(value)(

1353

value, variant_level = value.variant_level + 1)

1354

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

1355

1356

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

1357

def PropertiesChanged(self, interface_name, changed_properties,

1358

invalidated_properties):

1359

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

1360

standard.

1361

"""

1362

pass

688

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

689

value.variant_level+1)

690

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

1363

691

1364

692

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1365

693

out_signature="s",

1366

694

path_keyword='object_path',

1367

695

connection_keyword='connection')

1368

696

def Introspect(self, object_path, connection):

1369

"""Overloading of standard D-Bus method.

1370

1371

Inserts property tags and interface annotation tags.

697

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

1372

698

"""

1373

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1374

object_path,

1375

connection)

699

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

700

connection)

1376

701

try:

1377

702

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

1378

1379

703

def make_tag(document, name, prop):

1380

704

e = document.createElement("property")

1381

705

e.setAttribute("name", name)

1382

706

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

1383

707

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

1384

708

return e

1385

1386

709

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

1387

# Add property tags

1388

710

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

1389

711

for name, prop

1390

in self._get_all_dbus_things("property")

712

in self._get_all_dbus_properties()

1391

713

if prop._dbus_interface

1392

714

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

1393

715

if_tag.appendChild(tag)

1394

# Add annotation tags for properties

1395

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

1396

annots = dict()

1397

for name, prop in self._get_all_dbus_things(

1398

"property"):

1399

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

1400

and prop._dbus_interface

1401

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

1402

annots.update(getattr(

1403

prop, "_dbus_annotations", {}))

1404

for name, value in annots.items():

1405

ann_tag = document.createElement(

1406

"annotation")

1407

ann_tag.setAttribute("name", name)

1408

ann_tag.setAttribute("value", value)

1409

tag.appendChild(ann_tag)

1410

716

# Add the names to the return values for the

1411

717

# "org.freedesktop.DBus.Properties" methods

1412

718

if (if_tag.getAttribute("name")

1427

733

except (AttributeError, xml.dom.DOMException,

1428

734

xml.parsers.expat.ExpatError) as error:

1429

735

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

1430

exc_info=error)

1431

return xmlstring

1432

1433

try:

1434

dbus.OBJECT_MANAGER_IFACE

1435

except AttributeError:

1436

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

1437

1438

class DBusObjectWithObjectManager(DBusObjectWithAnnotations):

1439

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

1440

1441

Classes inheriting from this exposes the standard

1442

GetManagedObjects call and the InterfacesAdded and

1443

InterfacesRemoved signals on the standard

1444

"org.freedesktop.DBus.ObjectManager" interface.

1445

1446

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

1447

manually.

1448

"""

1449

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

1450

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

1451

def GetManagedObjects(self):

1452

"""This function must be overridden"""

1453

raise NotImplementedError()

1454

1455

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,

1456

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

1457

def InterfacesAdded(self, object_path, interfaces_and_properties):

1458

pass

1459

1460

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

1461

def InterfacesRemoved(self, object_path, interfaces):

1462

pass

1463

1464

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1465

out_signature = "s",

1466

path_keyword = 'object_path',

1467

connection_keyword = 'connection')

1468

def Introspect(self, object_path, connection):

1469

"""Overloading of standard D-Bus method.

1470

1471

Override return argument name of GetManagedObjects to be

1472

"objpath_interfaces_and_properties"

1473

"""

1474

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1475

object_path,

1476

connection)

1477

try:

1478

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

1479

1480

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

1481

# Fix argument name for the GetManagedObjects method

1482

if (if_tag.getAttribute("name")

1483

== dbus.OBJECT_MANAGER_IFACE):

1484

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

1485

if (cn.getAttribute("name")

1486

== "GetManagedObjects"):

1487

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

1488

if (arg.getAttribute("direction")

1489

== "out"):

1490

arg.setAttribute(

1491

"name",

1492

"objpath_interfaces"

1493

"_and_properties")

1494

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

1495

document.unlink()

1496

except (AttributeError, xml.dom.DOMException,

1497

xml.parsers.expat.ExpatError) as error:

1498

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

1499

exc_info = error)

1500

return xmlstring

1501

1502

def datetime_to_dbus(dt, variant_level=0):

1503

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

1504

if dt is None:

1505

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

1506

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

1507

1508

1509

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1510

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

1511

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

1512

interface names according to the "alt_interface_names" mapping.

1513

Usage:

1514

1515

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

1516

"net.example.AlternateInterface"})

1517

class SampleDBusObject(dbus.service.Object):

1518

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

1519

def SampleDBusMethod():

1520

pass

1521

1522

The above "SampleDBusMethod" on "SampleDBusObject" will be

1523

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

1524

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

1525

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

1526

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

1527

1528

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

1529

(from DBusObjectWithProperties) and interfaces (from the

1530

dbus_interface_annotations decorator).

1531

"""

1532

1533

def wrapper(cls):

1534

for orig_interface_name, alt_interface_name in (

1535

alt_interface_names.items()):

1536

attr = {}

1537

interface_names = set()

1538

# Go though all attributes of the class

1539

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

1540

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

1541

# with the wrong interface name

1542

if (not hasattr(attribute, "_dbus_interface")

1543

or not attribute._dbus_interface.startswith(

1544

orig_interface_name)):

1545

continue

1546

# Create an alternate D-Bus interface name based on

1547

# the current name

1548

alt_interface = attribute._dbus_interface.replace(

1549

orig_interface_name, alt_interface_name)

1550

interface_names.add(alt_interface)

1551

# Is this a D-Bus signal?

1552

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

1553

# Extract the original non-method undecorated

1554

# function by black magic

1555

if sys.version_info.major == 2:

1556

nonmethod_func = (dict(

1557

zip(attribute.func_code.co_freevars,

1558

attribute.__closure__))

1559

["func"].cell_contents)

1560

else:

1561

nonmethod_func = (dict(

1562

zip(attribute.__code__.co_freevars,

1563

attribute.__closure__))

1564

["func"].cell_contents)

1565

# Create a new, but exactly alike, function

1566

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

1567

# with the alternate D-Bus interface name

1568

new_function = copy_function(nonmethod_func)

1569

new_function = (dbus.service.signal(

1570

alt_interface,

1571

attribute._dbus_signature)(new_function))

1572

# Copy annotations, if any

1573

try:

1574

new_function._dbus_annotations = dict(

1575

attribute._dbus_annotations)

1576

except AttributeError:

1577

pass

1578

# Define a creator of a function to call both the

1579

# original and alternate functions, so both the

1580

# original and alternate signals gets sent when

1581

# the function is called

1582

def fixscope(func1, func2):

1583

"""This function is a scope container to pass

1584

func1 and func2 to the "call_both" function

1585

outside of its arguments"""

1586

1587

@functools.wraps(func2)

1588

def call_both(*args, **kwargs):

1589

"""This function will emit two D-Bus

1590

signals by calling func1 and func2"""

1591

func1(*args, **kwargs)

1592

func2(*args, **kwargs)

1593

# Make wrapper function look like a D-Bus signal

1594

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

1595

if name.startswith("_dbus_"):

1596

setattr(call_both, name, attr)

1597

1598

return call_both

1599

# Create the "call_both" function and add it to

1600

# the class

1601

attr[attrname] = fixscope(attribute, new_function)

1602

# Is this a D-Bus method?

1603

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

1604

# Create a new, but exactly alike, function

1605

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

1606

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

1607

# to the class.

1608

attr[attrname] = (

1609

dbus.service.method(

1610

alt_interface,

1611

attribute._dbus_in_signature,

1612

attribute._dbus_out_signature)

1613

(copy_function(attribute)))

1614

# Copy annotations, if any

1615

try:

1616

attr[attrname]._dbus_annotations = dict(

1617

attribute._dbus_annotations)

1618

except AttributeError:

1619

pass

1620

# Is this a D-Bus property?

1621

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

1622

# Create a new, but exactly alike, function

1623

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

1624

# property with the alternate D-Bus interface

1625

# name. Add it to the class.

1626

attr[attrname] = (dbus_service_property(

1627

alt_interface, attribute._dbus_signature,

1628

attribute._dbus_access,

1629

attribute._dbus_get_args_options

1630

["byte_arrays"])

1631

(copy_function(attribute)))

1632

# Copy annotations, if any

1633

try:

1634

attr[attrname]._dbus_annotations = dict(

1635

attribute._dbus_annotations)

1636

except AttributeError:

1637

pass

1638

# Is this a D-Bus interface?

1639

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

1640

# Create a new, but exactly alike, function

1641

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

1642

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

1643

# to the class.

1644

attr[attrname] = (

1645

dbus_interface_annotations(alt_interface)

1646

(copy_function(attribute)))

1647

if deprecate:

1648

# Deprecate all alternate interfaces

1649

iname="_AlternateDBusNames_interface_annotation{}"

1650

for interface_name in interface_names:

1651

1652

@dbus_interface_annotations(interface_name)

1653

def func(self):

1654

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

1655

"true" }

1656

# Find an unused name

1657

for aname in (iname.format(i)

1658

for i in itertools.count()):

1659

if aname not in attr:

1660

attr[aname] = func

1661

break

1662

if interface_names:

1663

# Replace the class with a new subclass of it with

1664

# methods, signals, etc. as created above.

1665

if sys.version_info.major == 2:

1666

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

1667

(cls, ), attr)

1668

else:

1669

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

1670

(cls, ), attr)

1671

return cls

1672

1673

return wrapper

1674

1675

1676

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

1677

"se.bsnet.fukt.Mandos"})

736

error)

737

return xmlstring

738

739

1678

740

class ClientDBus(Client, DBusObjectWithProperties):

1679

741

"""A Client class using D-Bus

1680

742

1684

746

"""

1685

747

1686

748

runtime_expansions = (Client.runtime_expansions

1687

+ ("dbus_object_path", ))

1688

1689

_interface = "se.recompile.Mandos.Client"

749

+ ("dbus_object_path",))

1690

750

1691

751

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

1692

752

1693

753

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

754

self._approvals_pending = 0

1694

755

self.bus = bus

1695

756

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

1696

757

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

1697

758

# the D-Bus

1698

client_object_name = str(self.name).translate(

759

client_object_name = unicode(self.name).translate(

1699

760

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

1700

761

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

1701

self.dbus_object_path = dbus.ObjectPath(

1702

"/clients/" + client_object_name)

762

self.dbus_object_path = (dbus.ObjectPath

763

("/clients/" + client_object_name))

1703

764

DBusObjectWithProperties.__init__(self, self.bus,

1704

765

self.dbus_object_path)

1705

1706

def notifychangeproperty(transform_func, dbus_name,

1707

type_func=lambda x: x,

1708

variant_level=1,

1709

invalidate_only=False,

1710

_interface=_interface):

1711

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

1712

its changes to DBus.

1713

1714

transform_fun: Function that takes a value and a variant_level

1715

and transforms it to a D-Bus type.

1716

dbus_name: D-Bus name of the variable

1717

type_func: Function that transform the value before sending it

1718

to the D-Bus. Default: no transform

1719

variant_level: D-Bus variant level. Default: 1

1720

"""

1721

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

1722

1723

def setter(self, value):

1724

if hasattr(self, "dbus_object_path"):

1725

if (not hasattr(self, attrname) or

1726

type_func(getattr(self, attrname, None))

1727

!= type_func(value)):

1728

if invalidate_only:

1729

self.PropertiesChanged(

1730

_interface, dbus.Dictionary(),

1731

dbus.Array((dbus_name, )))

1732

else:

1733

dbus_value = transform_func(

1734

type_func(value),

1735

variant_level = variant_level)

1736

self.PropertyChanged(dbus.String(dbus_name),

1737

dbus_value)

1738

self.PropertiesChanged(

1739

_interface,

1740

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

1741

dbus_value }),

1742

dbus.Array())

1743

setattr(self, attrname, value)

1744

1745

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

1746

1747

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1748

approvals_pending = notifychangeproperty(dbus.Boolean,

1749

"ApprovalPending",

1750

type_func = bool)

1751

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

1752

last_enabled = notifychangeproperty(datetime_to_dbus,

1753

"LastEnabled")

1754

checker = notifychangeproperty(

1755

dbus.Boolean, "CheckerRunning",

1756

type_func = lambda checker: checker is not None)

1757

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1758

"LastCheckedOK")

1759

last_checker_status = notifychangeproperty(dbus.Int16,

1760

"LastCheckerStatus")

1761

last_approval_request = notifychangeproperty(

1762

datetime_to_dbus, "LastApprovalRequest")

1763

approved_by_default = notifychangeproperty(dbus.Boolean,

1764

"ApprovedByDefault")

1765

approval_delay = notifychangeproperty(

1766

dbus.UInt64, "ApprovalDelay",

1767

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

1768

approval_duration = notifychangeproperty(

1769

dbus.UInt64, "ApprovalDuration",

1770

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

1771

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

1772

timeout = notifychangeproperty(

1773

dbus.UInt64, "Timeout",

1774

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

1775

extended_timeout = notifychangeproperty(

1776

dbus.UInt64, "ExtendedTimeout",

1777

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

1778

interval = notifychangeproperty(

1779

dbus.UInt64, "Interval",

1780

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

1781

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

1782

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

1783

invalidate_only=True)

1784

1785

del notifychangeproperty

766

767

def _get_approvals_pending(self):

768

return self._approvals_pending

769

def _set_approvals_pending(self, value):

770

old_value = self._approvals_pending

771

self._approvals_pending = value

772

bval = bool(value)

773

if (hasattr(self, "dbus_object_path")

774

and bval is not bool(old_value)):

775

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

776

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

777

dbus_bool)

778

779

approvals_pending = property(_get_approvals_pending,

780

_set_approvals_pending)

781

del _get_approvals_pending, _set_approvals_pending

782

783

@staticmethod

784

def _datetime_to_dbus(dt, variant_level=0):

785

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

786

return dbus.String(dt.isoformat(),

787

variant_level=variant_level)

788

789

def enable(self):

790

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

791

r = Client.enable(self)

792

if oldstate != self.enabled:

793

# Emit D-Bus signals

794

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

795

dbus.Boolean(True, variant_level=1))

796

self.PropertyChanged(

797

dbus.String("LastEnabled"),

798

self._datetime_to_dbus(self.last_enabled,

799

variant_level=1))

800

return r

801

802

def disable(self, quiet = False):

803

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

804

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

805

if not quiet and oldstate != self.enabled:

806

# Emit D-Bus signal

807

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

808

dbus.Boolean(False, variant_level=1))

809

return r

1786

810

1787

811

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

1788

812

try:

1793

817

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

1794

818

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

1795

819

1796

def checker_callback(self, source, condition,

1797

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

1798

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

1799

connection, command, *args,

1800

**kwargs)

1801

exitstatus = self.last_checker_status

1802

if exitstatus >= 0:

820

def checker_callback(self, pid, condition, command,

821

*args, **kwargs):

822

self.checker_callback_tag = None

823

self.checker = None

824

# Emit D-Bus signal

825

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

826

dbus.Boolean(False, variant_level=1))

827

if os.WIFEXITED(condition):

828

exitstatus = os.WEXITSTATUS(condition)

1803

829

# Emit D-Bus signal

1804

830

self.CheckerCompleted(dbus.Int16(exitstatus),

1805

# This is specific to GNU libC

1806

dbus.Int64(exitstatus << 8),

831

dbus.Int64(condition),

1807

832

dbus.String(command))

1808

833

else:

1809

834

# Emit D-Bus signal

1810

835

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

1811

dbus.Int64(

1812

# This is specific to GNU libC

1813

(exitstatus << 8)

1814

| self.last_checker_signal),

836

dbus.Int64(condition),

1815

837

dbus.String(command))

1816

return ret

838

839

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

840

*args, **kwargs)

841

842

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

843

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

844

# Emit D-Bus signal

845

self.PropertyChanged(

846

dbus.String("LastCheckedOK"),

847

(self._datetime_to_dbus(self.last_checked_ok,

848

variant_level=1)))

849

850

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

851

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

852

# Emit D-Bus signal

853

self.PropertyChanged(

854

dbus.String("LastApprovalRequest"),

855

(self._datetime_to_dbus(self.last_approval_request,

856

variant_level=1)))

857

return r

1817

858

1818

859

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

1819

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

860

old_checker = self.checker

861

if self.checker is not None:

862

old_checker_pid = self.checker.pid

863

else:

864

old_checker_pid = None

1820

865

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

1821

866

# Only if new checker process was started

1822

867

if (self.checker is not None

1823

868

and old_checker_pid != self.checker.pid):

1824

869

# Emit D-Bus signal

1825

870

self.CheckerStarted(self.current_checker_command)

871

self.PropertyChanged(

872

dbus.String("CheckerRunning"),

873

dbus.Boolean(True, variant_level=1))

1826

874

return r

1827

875

876

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

877

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

878

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

879

if (old_checker is not None

880

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

881

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

882

dbus.Boolean(False, variant_level=1))

883

return r

884

1828

885

def _reset_approved(self):

1829

self.approved = None

886

self._approved = None

1830

887

return False

1831

888

1832

889

def approve(self, value=True):

1833

self.approved = value

1834

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

1835

* 1000), self._reset_approved)

1836

890

self.send_changedstate()

891

self._approved = value

892

gobject.timeout_add(self._timedelta_to_milliseconds

893

(self.approval_duration),

894

self._reset_approved)

895

1837

896

1838

897

## D-Bus methods, signals & properties

1839

1840

## Interfaces

898

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

1841

899

1842

900

## Signals

1843

901

1854

912

pass

1855

913

1856

914

# PropertyChanged - signal

1857

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

1858

915

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

1859

916

def PropertyChanged(self, property, value):

1860

917

"D-Bus signal"

1894

951

self.checked_ok()

1895

952

1896

953

# Enable - method

1897

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

1898

954

@dbus.service.method(_interface)

1899

955

def Enable(self):

1900

956

"D-Bus method"

1901

957

self.enable()

1902

958

1903

959

# StartChecker - method

1904

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

1905

960

@dbus.service.method(_interface)

1906

961

def StartChecker(self):

1907

962

"D-Bus method"

1908

963

self.start_checker()

1909

964

1910

965

# Disable - method

1911

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

1912

966

@dbus.service.method(_interface)

1913

967

def Disable(self):

1914

968

"D-Bus method"

1915

969

self.disable()

1916

970

1917

971

# StopChecker - method

1918

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

1919

972

@dbus.service.method(_interface)

1920

973

def StopChecker(self):

1921

974

self.stop_checker()

1928

981

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

1929

982

1930

983

# ApprovedByDefault - property

1931

@dbus_service_property(_interface,

1932

signature="b",

984

@dbus_service_property(_interface, signature="b",

1933

985

access="readwrite")

1934

986

def ApprovedByDefault_dbus_property(self, value=None):

1935

987

if value is None: # get

1936

988

return dbus.Boolean(self.approved_by_default)

1937

989

self.approved_by_default = bool(value)

990

# Emit D-Bus signal

991

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

992

dbus.Boolean(value, variant_level=1))

1938

993

1939

994

# ApprovalDelay - property

1940

@dbus_service_property(_interface,

1941

signature="t",

995

@dbus_service_property(_interface, signature="t",

1942

996

access="readwrite")

1943

997

def ApprovalDelay_dbus_property(self, value=None):

1944

998

if value is None: # get

1945

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

1946

* 1000)

999

return dbus.UInt64(self.approval_delay_milliseconds())

1947

1000

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

1001

# Emit D-Bus signal

1002

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

1003

dbus.UInt64(value, variant_level=1))

1948

1004

1949

1005

# ApprovalDuration - property

1950

@dbus_service_property(_interface,

1951

signature="t",

1006

@dbus_service_property(_interface, signature="t",

1952

1007

access="readwrite")

1953

1008

def ApprovalDuration_dbus_property(self, value=None):

1954

1009

if value is None: # get

1955

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

1956

* 1000)

1010

return dbus.UInt64(self._timedelta_to_milliseconds(

1011

self.approval_duration))

1957

1012

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

1013

# Emit D-Bus signal

1014

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

1015

dbus.UInt64(value, variant_level=1))

1958

1016

1959

1017

# Name - property

1960

@dbus_annotations(

1961

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

1962

1018

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

1963

1019

def Name_dbus_property(self):

1964

1020

return dbus.String(self.name)

1965

1021

1966

1022

# Fingerprint - property

1967

@dbus_annotations(

1968

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

1969

1023

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

1970

1024

def Fingerprint_dbus_property(self):

1971

1025

return dbus.String(self.fingerprint)

1972

1026

1973

1027

# Host - property

1974

@dbus_service_property(_interface,

1975

signature="s",

1028

@dbus_service_property(_interface, signature="s",

1976

1029

access="readwrite")

1977

1030

def Host_dbus_property(self, value=None):

1978

1031

if value is None: # get

1979

1032

return dbus.String(self.host)

1980

self.host = str(value)

1033

self.host = value

1034

# Emit D-Bus signal

1035

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

1036

dbus.String(value, variant_level=1))

1981

1037

1982

1038

# Created - property

1983

@dbus_annotations(

1984

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

1985

1039

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

1986

1040

def Created_dbus_property(self):

1987

return datetime_to_dbus(self.created)

1041

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

1988

1042

1989

1043

# LastEnabled - property

1990

1044

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

1991

1045

def LastEnabled_dbus_property(self):

1992

return datetime_to_dbus(self.last_enabled)

1046

if self.last_enabled is None:

1047

return dbus.String("")

1048

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

1993

1049

1994

1050

# Enabled - property

1995

@dbus_service_property(_interface,

1996

signature="b",

1051

@dbus_service_property(_interface, signature="b",

1997

1052

access="readwrite")

1998

1053

def Enabled_dbus_property(self, value=None):

1999

1054

if value is None: # get

2004

1059

self.disable()

2005

1060

2006

1061

# LastCheckedOK - property

2007

@dbus_service_property(_interface,

2008

signature="s",

1062

@dbus_service_property(_interface, signature="s",

2009

1063

access="readwrite")

2010

1064

def LastCheckedOK_dbus_property(self, value=None):

2011

1065

if value is not None:

2012

1066

self.checked_ok()

2013

1067

return

2014

return datetime_to_dbus(self.last_checked_ok)

2015

2016

# LastCheckerStatus - property

2017

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

2018

def LastCheckerStatus_dbus_property(self):

2019

return dbus.Int16(self.last_checker_status)

2020

2021

# Expires - property

2022

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

2023

def Expires_dbus_property(self):

2024

return datetime_to_dbus(self.expires)

1068

if self.last_checked_ok is None:

1069

return dbus.String("")

1070

return dbus.String(self._datetime_to_dbus(self

1071

.last_checked_ok))

2025

1072

2026

1073

# LastApprovalRequest - property

2027

1074

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

2028

1075

def LastApprovalRequest_dbus_property(self):

2029

return datetime_to_dbus(self.last_approval_request)

1076

if self.last_approval_request is None:

1077

return dbus.String("")

1078

return dbus.String(self.

1079

_datetime_to_dbus(self

1080

.last_approval_request))

2030

1081

2031

1082

# Timeout - property

2032

@dbus_service_property(_interface,

2033

signature="t",

1083

@dbus_service_property(_interface, signature="t",

2034

1084

access="readwrite")

2035

1085

def Timeout_dbus_property(self, value=None):

2036

1086

if value is None: # get

2037

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

2038

old_timeout = self.timeout

1087

return dbus.UInt64(self.timeout_milliseconds())

2039

1088

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

2040

# Reschedule disabling

2041

if self.enabled:

2042

now = datetime.datetime.utcnow()

2043

self.expires += self.timeout - old_timeout

2044

if self.expires <= now:

2045

# The timeout has passed

2046

self.disable()

2047

else:

2048

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

2049

is None):

2050

return

2051

GLib.source_remove(self.disable_initiator_tag)

2052

self.disable_initiator_tag = GLib.timeout_add(

2053

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

2054

self.disable)

2055

2056

# ExtendedTimeout - property

2057

@dbus_service_property(_interface,

2058

signature="t",

2059

access="readwrite")

2060

def ExtendedTimeout_dbus_property(self, value=None):

2061

if value is None: # get

2062

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

2063

* 1000)

2064

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

1089

# Emit D-Bus signal

1090

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

1091

dbus.UInt64(value, variant_level=1))

1092

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

1093

return

1094

# Reschedule timeout

1095

gobject.source_remove(self.disable_initiator_tag)

1096

self.disable_initiator_tag = None

1097

time_to_die = (self.

1098

_timedelta_to_milliseconds((self

1099

.last_checked_ok

1100

+ self.timeout)

1101

- datetime.datetime

1102

.utcnow()))

1103

if time_to_die <= 0:

1104

# The timeout has passed

1105

self.disable()

1106

else:

1107

self.disable_initiator_tag = (gobject.timeout_add

1108

(time_to_die, self.disable))

2065

1109

2066

1110

# Interval - property

2067

@dbus_service_property(_interface,

2068

signature="t",

1111

@dbus_service_property(_interface, signature="t",

2069

1112

access="readwrite")

2070

1113

def Interval_dbus_property(self, value=None):

2071

1114

if value is None: # get

2072

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

1115

return dbus.UInt64(self.interval_milliseconds())

2073

1116

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

1117

# Emit D-Bus signal

1118

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

1119

dbus.UInt64(value, variant_level=1))

2074

1120

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

2075

1121

return

2076

if self.enabled:

2077

# Reschedule checker run

2078

GLib.source_remove(self.checker_initiator_tag)

2079

self.checker_initiator_tag = GLib.timeout_add(

2080

value, self.start_checker)

2081

self.start_checker() # Start one now, too

2082

1122

# Reschedule checker run

1123

gobject.source_remove(self.checker_initiator_tag)

1124

self.checker_initiator_tag = (gobject.timeout_add

1125

(value, self.start_checker))

1126

self.start_checker() # Start one now, too

1127

2083

1128

# Checker - property

2084

@dbus_service_property(_interface,

2085

signature="s",

1129

@dbus_service_property(_interface, signature="s",

2086

1130

access="readwrite")

2087

1131

def Checker_dbus_property(self, value=None):

2088

1132

if value is None: # get

2089

1133

return dbus.String(self.checker_command)

2090

self.checker_command = str(value)

1134

self.checker_command = value

1135

# Emit D-Bus signal

1136

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

1137

dbus.String(self.checker_command,

1138

variant_level=1))

2091

1139

2092

1140

# CheckerRunning - property

2093

@dbus_service_property(_interface,

2094

signature="b",

1141

@dbus_service_property(_interface, signature="b",

2095

1142

access="readwrite")

2096

1143

def CheckerRunning_dbus_property(self, value=None):

2097

1144

if value is None: # get

2102

1149

self.stop_checker()

2103

1150

2104

1151

# ObjectPath - property

2105

@dbus_annotations(

2106

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

2107

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

2108

1152

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

2109

1153

def ObjectPath_dbus_property(self):

2110

1154

return self.dbus_object_path # is already a dbus.ObjectPath

2111

1155

2112

1156

# Secret = property

2113

@dbus_annotations(

2114

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

2115

"invalidates"})

2116

@dbus_service_property(_interface,

2117

signature="ay",

2118

access="write",

2119

byte_arrays=True)

1157

@dbus_service_property(_interface, signature="ay",

1158

access="write", byte_arrays=True)

2120

1159

def Secret_dbus_property(self, value):

2121

self.secret = bytes(value)

1160

self.secret = str(value)

2122

1161

2123

1162

del _interface

2124

1163

2128

1167

self._pipe = child_pipe

2129

1168

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

2130

1169

if not self._pipe.recv():

2131

raise KeyError(fpr)

2132

1170

raise KeyError()

1171

2133

1172

def __getattribute__(self, name):

2134

if name == '_pipe':

1173

if(name == '_pipe'):

2135

1174

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

2136

1175

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

2137

1176

data = self._pipe.recv()

2138

1177

if data[0] == 'data':

2139

1178

return data[1]

2140

1179

if data[0] == 'function':

2141

2142

1180

def func(*args, **kwargs):

2143

1181

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

2144

1182

return self._pipe.recv()[1]

2145

2146

1183

return func

2147

1184

2148

1185

def __setattr__(self, name, value):

2149

if name == '_pipe':

1186

if(name == '_pipe'):

2150

1187

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

2151

1188

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

2152

1189

2160

1197

def handle(self):

2161

1198

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

2162

1199

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

2163

str(self.client_address))

1200

unicode(self.client_address))

2164

1201

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

2165

1202

self.server.child_pipe.fileno())

2166

2167

session = gnutls.ClientSession(self.request)

2168

1203

1204

session = (gnutls.connection

1205

.ClientSession(self.request,

1206

gnutls.connection

1207

.X509Credentials()))

1208

1209

# Note: gnutls.connection.X509Credentials is really a

1210

# generic GnuTLS certificate credentials object so long as

1211

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

1212

# here despite using OpenPGP certificates.

1213

2169

1214

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

2170

1215

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

2171

1216

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

2174

1219

priority = self.server.gnutls_priority

2175

1220

if priority is None:

2176

1221

priority = "NORMAL"

2177

gnutls.priority_set_direct(session._c_object, priority,

2178

None)

2179

1222

(gnutls.library.functions

1223

.gnutls_priority_set_direct(session._c_object,

1224

priority, None))

1225

2180

1226

# Start communication using the Mandos protocol

2181

1227

# Get protocol number

2182

1228

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

2183

1229

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

2184

1230

try:

2185

1231

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

2186

raise RuntimeError(line)

1232

raise RuntimeError

2187

1233

except (ValueError, IndexError, RuntimeError) as error:

2188

1234

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

2189

1235

return

2190

1236

2191

1237

# Start GnuTLS connection

2192

1238

try:

2193

1239

session.handshake()

2194

except gnutls.Error as error:

1240

except gnutls.errors.GNUTLSError as error:

2195

1241

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

2196

1242

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

2197

1243

# established. Just abandon the request.

2198

1244

return

2199

1245

logger.debug("Handshake succeeded")

2200

1246

2201

1247

approval_required = False

2202

1248

try:

2203

1249

try:

2204

fpr = self.fingerprint(

2205

self.peer_certificate(session))

2206

except (TypeError, gnutls.Error) as error:

1250

fpr = self.fingerprint(self.peer_certificate

1251

(session))

1252

except (TypeError,

1253

gnutls.errors.GNUTLSError) as error:

2207

1254

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

2208

1255

return

2209

1256

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

2210

1257

2211

1258

try:

2212

1259

client = ProxyClient(child_pipe, fpr,

2213

1260

self.client_address)

2221

1268

2222

1269

while True:

2223

1270

if not client.enabled:

2224

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

2225

client.name)

1271

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

1272

client.name)

2226

1273

if self.server.use_dbus:

2227

1274

# Emit D-Bus signal

2228

client.Rejected("Disabled")

1275

client.Rejected("Disabled")

2229

1276

return

2230

1277

2231

if client.approved or not client.approval_delay:

1278

if client._approved or not client.approval_delay:

2232

1279

#We are approved or approval is disabled

2233

1280

break

2234

elif client.approved is None:

1281

elif client._approved is None:

2235

1282

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

2236

1283

client.name)

2237

1284

if self.server.use_dbus:

2238

1285

# Emit D-Bus signal

2239

1286

client.NeedApproval(

2240

client.approval_delay.total_seconds()

2241

* 1000, client.approved_by_default)

1287

client.approval_delay_milliseconds(),

1288

client.approved_by_default)

2242

1289

else:

2243

1290

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

2244

1291

client.name)

2248

1295

return

2249

1296

2250

1297

#wait until timeout or approved

1298

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

2251

1299

time = datetime.datetime.now()

2252

1300

client.changedstate.acquire()

2253

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

1301

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

2254

1302

client.changedstate.release()

2255

1303

time2 = datetime.datetime.now()

2256

1304

if (time2 - time) >= delay:

2267

1315

else:

2268

1316

delay -= time2 - time

2269

1317

2270

try:

2271

session.send(client.secret)

2272

except gnutls.Error as error:

2273

logger.warning("gnutls send failed",

2274

exc_info = error)

2275

return

2276

1318

sent_size = 0

1319

while sent_size < len(client.secret):

1320

try:

1321

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

1322

except gnutls.errors.GNUTLSError as error:

1323

logger.warning("gnutls send failed")

1324

return

1325

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

1326

sent, len(client.secret)

1327

- (sent_size + sent))

1328

sent_size += sent

1329

2277

1330

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

2278

# bump the timeout using extended_timeout

2279

client.bump_timeout(client.extended_timeout)

1331

# bump the timeout as if seen

1332

client.checked_ok()

2280

1333

if self.server.use_dbus:

2281

1334

# Emit D-Bus signal

2282

1335

client.GotSecret()

2286

1339

client.approvals_pending -= 1

2287

1340

try:

2288

1341

session.bye()

2289

except gnutls.Error as error:

2290

logger.warning("GnuTLS bye failed",

2291

exc_info=error)

1342

except gnutls.errors.GNUTLSError as error:

1343

logger.warning("GnuTLS bye failed")

2292

1344

2293

1345

@staticmethod

2294

1346

def peer_certificate(session):

2295

1347

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

2296

1348

# If not an OpenPGP certificate...

2297

if (gnutls.certificate_type_get(session._c_object)

2298

!= gnutls.CRT_OPENPGP):

2299

# ...return invalid data

2300

return b""

1349

if (gnutls.library.functions

1350

.gnutls_certificate_type_get(session._c_object)

1351

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1352

# ...do the normal thing

1353

return session.peer_certificate

2301

1354

list_size = ctypes.c_uint(1)

2302

cert_list = (gnutls.certificate_get_peers

1355

cert_list = (gnutls.library.functions

1356

.gnutls_certificate_get_peers

2303

1357

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

2304

1358

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

2305

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

1359

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

1360

" certificate")

2306

1361

if list_size.value == 0:

2307

1362

return None

2308

1363

cert = cert_list[0]

2312

1367

def fingerprint(openpgp):

2313

1368

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

2314

1369

# New GnuTLS "datum" with the OpenPGP public key

2315

datum = gnutls.datum_t(

2316

ctypes.cast(ctypes.c_char_p(openpgp),

2317

ctypes.POINTER(ctypes.c_ubyte)),

2318

ctypes.c_uint(len(openpgp)))

1370

datum = (gnutls.library.types

1371

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

1372

ctypes.POINTER

1373

(ctypes.c_ubyte)),

1374

ctypes.c_uint(len(openpgp))))

2319

1375

# New empty GnuTLS certificate

2320

crt = gnutls.openpgp_crt_t()

2321

gnutls.openpgp_crt_init(ctypes.byref(crt))

1376

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1377

(gnutls.library.functions

1378

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

2322

1379

# Import the OpenPGP public key into the certificate

2323

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

2324

gnutls.OPENPGP_FMT_RAW)

1380

(gnutls.library.functions

1381

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

1382

gnutls.library.constants

1383

.GNUTLS_OPENPGP_FMT_RAW))

2325

1384

# Verify the self signature in the key

2326

1385

crtverify = ctypes.c_uint()

2327

gnutls.openpgp_crt_verify_self(crt, 0,

2328

ctypes.byref(crtverify))

1386

(gnutls.library.functions

1387

.gnutls_openpgp_crt_verify_self(crt, 0,

1388

ctypes.byref(crtverify)))

2329

1389

if crtverify.value != 0:

2330

gnutls.openpgp_crt_deinit(crt)

2331

raise gnutls.CertificateSecurityError("Verify failed")

1390

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1391

raise (gnutls.errors.CertificateSecurityError

1392

("Verify failed"))

2332

1393

# New buffer for the fingerprint

2333

1394

buf = ctypes.create_string_buffer(20)

2334

1395

buf_len = ctypes.c_size_t()

2335

1396

# Get the fingerprint from the certificate into the buffer

2336

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

2337

ctypes.byref(buf_len))

1397

(gnutls.library.functions

1398

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

1399

ctypes.byref(buf_len)))

2338

1400

# Deinit the certificate

2339

gnutls.openpgp_crt_deinit(crt)

1401

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

2340

1402

# Convert the buffer to a Python bytestring

2341

1403

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

2342

1404

# Convert the bytestring to hexadecimal notation

2343

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

1405

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

2344

1406

return hex_fpr

2345

1407

2346

1408

2347

1409

class MultiprocessingMixIn(object):

2348

1410

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

2349

2350

1411

def sub_process_main(self, request, address):

2351

1412

try:

2352

1413

self.finish_request(request, address)

2353

except Exception:

1414

except:

2354

1415

self.handle_error(request, address)

2355

1416

self.close_request(request)

2356

1417

2357

1418

def process_request(self, request, address):

2358

1419

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

2359

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

2360

args = (request, address))

2361

proc.start()

2362

return proc

2363

1420

multiprocessing.Process(target = self.sub_process_main,

1421

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

2364

1422

2365

1423

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

2366

1424

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

2367

2368

1425

def process_request(self, request, client_address):

2369

1426

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

2370

1427

2371

1428

This function creates a new pipe in self.pipe

2372

1429

"""

2373

1430

parent_pipe, self.child_pipe = multiprocessing.Pipe()

2374

2375

proc = MultiprocessingMixIn.process_request(self, request,

2376

client_address)

1431

1432

super(MultiprocessingMixInWithPipe,

1433

self).process_request(request, client_address)

2377

1434

self.child_pipe.close()

2378

self.add_pipe(parent_pipe, proc)

2379

2380

def add_pipe(self, parent_pipe, proc):

1435

self.add_pipe(parent_pipe)

1436

1437

def add_pipe(self, parent_pipe):

2381

1438

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

2382

raise NotImplementedError()

2383

1439

raise NotImplementedError

2384

1440

2385

1441

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

2386

1442

socketserver.TCPServer, object):

2391

1447

interface: None or a network interface name (string)

2392

1448

use_ipv6: Boolean; to use IPv6 or not

2393

1449

"""

2394

2395

1450

def __init__(self, server_address, RequestHandlerClass,

2396

interface=None,

2397

use_ipv6=True,

2398

socketfd=None):

2399

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

2400

creating a new one with socket.socket().

2401

"""

1451

interface=None, use_ipv6=True):

2402

1452

self.interface = interface

2403

1453

if use_ipv6:

2404

1454

self.address_family = socket.AF_INET6

2405

if socketfd is not None:

2406

# Save the file descriptor

2407

self.socketfd = socketfd

2408

# Save the original socket.socket() function

2409

self.socket_socket = socket.socket

2410

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

2411

#

2412

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

2413

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

2414

# patching socket.socket.)

2415

#

2416

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

2417

@functools.wraps(socket.socket)

2418

def socket_wrapper(*args, **kwargs):

2419

# Restore original function so subsequent calls are

2420

# not affected.

2421

socket.socket = self.socket_socket

2422

del self.socket_socket

2423

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

2424

# saved file descriptor.

2425

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

2426

# Replace socket.socket() function with wrapper

2427

socket.socket = socket_wrapper

2428

# The socketserver.TCPServer.__init__ will call

2429

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

2430

# socket_wrapper(), if socketfd was set.

2431

1455

socketserver.TCPServer.__init__(self, server_address,

2432

1456

RequestHandlerClass)

2433

2434

1457

def server_bind(self):

2435

1458

"""This overrides the normal server_bind() function

2436

1459

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

2442

1465

self.interface)

2443

1466

else:

2444

1467

try:

2445

self.socket.setsockopt(

2446

socket.SOL_SOCKET, SO_BINDTODEVICE,

2447

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

1468

self.socket.setsockopt(socket.SOL_SOCKET,

1469

SO_BINDTODEVICE,

1470

str(self.interface

1471

+ '\0'))

2448

1472

except socket.error as error:

2449

if error.errno == errno.EPERM:

2450

logger.error("No permission to bind to"

2451

" interface %s", self.interface)

2452

elif error.errno == errno.ENOPROTOOPT:

1473

if error[0] == errno.EPERM:

1474

logger.error("No permission to"

1475

" bind to interface %s",

1476

self.interface)

1477

elif error[0] == errno.ENOPROTOOPT:

2453

1478

logger.error("SO_BINDTODEVICE not available;"

2454

1479

" cannot bind to interface %s",

2455

1480

self.interface)

2456

elif error.errno == errno.ENODEV:

2457

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

2458

" cannot bind", self.interface)

2459

1481

else:

2460

1482

raise

2461

1483

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

2464

1486

if self.address_family == socket.AF_INET6:

2465

1487

any_address = "::" # in6addr_any

2466

1488

else:

2467

any_address = "0.0.0.0" # INADDR_ANY

1489

any_address = socket.INADDR_ANY

2468

1490

self.server_address = (any_address,

2469

1491

self.server_address[1])

2470

1492

elif not self.server_address[1]:

2471

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

1493

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

1494

0)

2472

1495

# if self.interface:

2473

1496

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

2474

1497

# 0, # port

2486

1509

gnutls_priority GnuTLS priority string

2487

1510

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

2488

1511

2489

Assumes a GLib.MainLoop event loop.

1512

Assumes a gobject.MainLoop event loop.

2490

1513

"""

2491

2492

1514

def __init__(self, server_address, RequestHandlerClass,

2493

interface=None,

2494

use_ipv6=True,

2495

clients=None,

2496

gnutls_priority=None,

2497

use_dbus=True,

2498

socketfd=None):

1515

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

1516

gnutls_priority=None, use_dbus=True):

2499

1517

self.enabled = False

2500

1518

self.clients = clients

2501

1519

if self.clients is None:

2502

self.clients = {}

1520

self.clients = set()

2503

1521

self.use_dbus = use_dbus

2504

1522

self.gnutls_priority = gnutls_priority

2505

1523

IPv6_TCPServer.__init__(self, server_address,

2506

1524

RequestHandlerClass,

2507

1525

interface = interface,

2508

use_ipv6 = use_ipv6,

2509

socketfd = socketfd)

2510

1526

use_ipv6 = use_ipv6)

2511

1527

def server_activate(self):

2512

1528

if self.enabled:

2513

1529

return socketserver.TCPServer.server_activate(self)

2514

2515

1530

def enable(self):

2516

1531

self.enabled = True

2517

2518

def add_pipe(self, parent_pipe, proc):

1532

def add_pipe(self, parent_pipe):

2519

1533

# Call "handle_ipc" for both data and EOF events

2520

GLib.io_add_watch(

2521

parent_pipe.fileno(),

2522

GLib.IO_IN | GLib.IO_HUP,

2523

functools.partial(self.handle_ipc,

2524

parent_pipe = parent_pipe,

2525

proc = proc))

2526

2527

def handle_ipc(self, source, condition,

2528

parent_pipe=None,

2529

proc = None,

1534

gobject.io_add_watch(parent_pipe.fileno(),

1535

gobject.IO_IN | gobject.IO_HUP,

1536

functools.partial(self.handle_ipc,

1537

parent_pipe = parent_pipe))

1538

1539

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

2530

1540

client_object=None):

2531

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

2532

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

2533

# Wait for other process to exit

2534

proc.join()

1541

condition_names = {

1542

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

1543

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

1544

# blocking).

1545

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

1546

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

1547

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

1548

# broken, usually for pipes and

1549

# sockets).

1550

}

1551

conditions_string = ' | '.join(name

1552

for cond, name in

1553

condition_names.iteritems()

1554

if cond & condition)

1555

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

1556

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

2535

1557

return False

2536

1558

2537

1559

# Read a request from the child

2542

1564

fpr = request[1]

2543

1565

address = request[2]

2544

1566

2545

for c in self.clients.values():

1567

for c in self.clients:

2546

1568

if c.fingerprint == fpr:

2547

1569

client = c

2548

1570

break

2549

1571

else:

2550

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

2551

"dress: %s", fpr, address)

1572

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

1573

"dress: %s", fpr, address)

2552

1574

if self.use_dbus:

2553

1575

# Emit D-Bus signal

2554

mandos_dbus_service.ClientNotFound(fpr,

2555

address[0])

1576

mandos_dbus_service.ClientNotFound(fpr, address[0])

2556

1577

parent_pipe.send(False)

2557

1578

return False

2558

1579

2559

GLib.io_add_watch(

2560

parent_pipe.fileno(),

2561

GLib.IO_IN | GLib.IO_HUP,

2562

functools.partial(self.handle_ipc,

2563

parent_pipe = parent_pipe,

2564

proc = proc,

2565

client_object = client))

1580

gobject.io_add_watch(parent_pipe.fileno(),

1581

gobject.IO_IN | gobject.IO_HUP,

1582

functools.partial(self.handle_ipc,

1583

parent_pipe = parent_pipe,

1584

client_object = client))

2566

1585

parent_pipe.send(True)

2567

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

2568

# same fileno

1586

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

2569

1587

return False

2570

1588

if command == 'funcall':

2571

1589

funcname = request[1]

2572

1590

args = request[2]

2573

1591

kwargs = request[3]

2574

1592

2575

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

2576

funcname)(*args,

2577

**kwargs)))

2578

1593

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

1594

2579

1595

if command == 'getattr':

2580

1596

attrname = request[1]

2581

if isinstance(client_object.__getattribute__(attrname),

2582

collections.Callable):

2583

parent_pipe.send(('function', ))

1597

if callable(client_object.__getattribute__(attrname)):

1598

parent_pipe.send(('function',))

2584

1599

else:

2585

parent_pipe.send((

2586

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

1600

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

2587

1601

2588

1602

if command == 'setattr':

2589

1603

attrname = request[1]

2590

1604

value = request[2]

2591

1605

setattr(client_object, attrname, value)

2592

1606

2593

1607

return True

2594

1608

2595

1609

2596

def rfc3339_duration_to_delta(duration):

2597

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

2598

2599

>>> rfc3339_duration_to_delta("P7D")

2600

datetime.timedelta(7)

2601

>>> rfc3339_duration_to_delta("PT60S")

2602

datetime.timedelta(0, 60)

2603

>>> rfc3339_duration_to_delta("PT60M")

2604

datetime.timedelta(0, 3600)

2605

>>> rfc3339_duration_to_delta("PT24H")

2606

datetime.timedelta(1)

2607

>>> rfc3339_duration_to_delta("P1W")

2608

datetime.timedelta(7)

2609

>>> rfc3339_duration_to_delta("PT5M30S")

2610

datetime.timedelta(0, 330)

2611

>>> rfc3339_duration_to_delta("P1DT3M20S")

2612

datetime.timedelta(1, 200)

2613

"""

2614

2615

# Parsing an RFC 3339 duration with regular expressions is not

2616

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

2617

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

2618

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

2619

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

2620

# avoid excessive use of external libraries.

2621

2622

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

2623

Token = collections.namedtuple("Token", (

2624

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

2625

# a "group" containing digits

2626

"value", # datetime.timedelta or None

2627

"followers")) # Tokens valid after this token

2628

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

2629

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

2630

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

2631

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

2632

datetime.timedelta(seconds=1),

2633

frozenset((token_end, )))

2634

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

2635

datetime.timedelta(minutes=1),

2636

frozenset((token_second, token_end)))

2637

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

2638

datetime.timedelta(hours=1),

2639

frozenset((token_minute, token_end)))

2640

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

2641

None,

2642

frozenset((token_hour, token_minute,

2643

token_second)))

2644

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

2645

datetime.timedelta(days=1),

2646

frozenset((token_time, token_end)))

2647

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

2648

datetime.timedelta(weeks=4),

2649

frozenset((token_day, token_end)))

2650

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

2651

datetime.timedelta(weeks=52),

2652

frozenset((token_month, token_end)))

2653

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

2654

datetime.timedelta(weeks=1),

2655

frozenset((token_end, )))

2656

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

2657

frozenset((token_year, token_month,

2658

token_day, token_time,

2659

token_week)))

2660

# Define starting values

2661

value = datetime.timedelta() # Value so far

2662

found_token = None

2663

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

2664

s = duration # String left to parse

2665

# Loop until end token is found

2666

while found_token is not token_end:

2667

# Search for any currently valid tokens

2668

for token in followers:

2669

match = token.regexp.match(s)

2670

if match is not None:

2671

# Token found

2672

if token.value is not None:

2673

# Value found, parse digits

2674

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

2675

# Add to value so far

2676

value += factor * token.value

2677

# Strip token from string

2678

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

2679

# Go to found token

2680

found_token = token

2681

# Set valid next tokens

2682

followers = found_token.followers

2683

break

2684

else:

2685

# No currently valid tokens were found

2686

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

2687

.format(duration))

2688

# End token found

2689

return value

2690

2691

2692

1610

def string_to_delta(interval):

2693

1611

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

2694

1612

2705

1623

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

2706

1624

datetime.timedelta(0, 330)

2707

1625

"""

2708

2709

try:

2710

return rfc3339_duration_to_delta(interval)

2711

except ValueError:

2712

pass

2713

2714

1626

timevalue = datetime.timedelta(0)

2715

1627

for s in interval.split():

2716

1628

try:

2717

suffix = s[-1]

1629

suffix = unicode(s[-1])

2718

1630

value = int(s[:-1])

2719

1631

if suffix == "d":

2720

1632

delta = datetime.timedelta(value)

2727

1639

elif suffix == "w":

2728

1640

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

2729

1641

else:

2730

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

2731

except IndexError as e:

1642

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

1643

except (ValueError, IndexError) as e:

2732

1644

raise ValueError(*(e.args))

2733

1645

timevalue += delta

2734

1646

return timevalue

2735

1647

2736

1648

1649

def if_nametoindex(interface):

1650

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

1651

1652

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

1653

global if_nametoindex

1654

try:

1655

if_nametoindex = (ctypes.cdll.LoadLibrary

1656

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

1657

.if_nametoindex)

1658

except (OSError, AttributeError):

1659

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

1660

def if_nametoindex(interface):

1661

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

1662

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

1663

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

1664

ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

1665

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

1666

interface))

1667

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

1668

ifreq[16:20])[0]

1669

return interface_index

1670

return if_nametoindex(interface)

1671

1672

2737

1673

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

2738

1674

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

2739

1675

2747

1683

sys.exit()

2748

1684

if not noclose:

2749

1685

# Close all standard open file descriptors

2750

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

1686

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

2751

1687

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

2752

1688

raise OSError(errno.ENODEV,

2753

"{} not a character device"

2754

.format(os.devnull))

1689

"%s not a character device"

1690

% os.path.devnull)

2755

1691

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

2756

1692

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

2757

1693

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

2766

1702

2767

1703

parser = argparse.ArgumentParser()

2768

1704

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

2769

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

1705

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

2770

1706

help="show version number and exit")

2771

1707

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

2772

1708

help="Bind to interface IF")

2778

1714

help="Run self-test")

2779

1715

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

2780

1716

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

2781

" to terminal", default=None)

1717

" to terminal")

2782

1718

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

2783

1719

help="Debug level for stdout output")

2784

1720

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

2791

1727

" files")

2792

1728

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

2793

1729

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

2794

" system bus interface", default=None)

1730

" system bus interface")

2795

1731

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

2796

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

2797

default=None)

2798

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

2799

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

2800

" state", default=None)

2801

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

2802

help="Specify a file descriptor to a network"

2803

" socket to use instead of creating one")

2804

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

2805

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

2806

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

2807

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

2808

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

2809

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

2810

default=None)

2811

1732

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

2812

1733

options = parser.parse_args()

2813

1734

2814

1735

if options.check:

2815

1736

import doctest

2816

fail_count, test_count = doctest.testmod()

2817

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

1737

doctest.testmod()

1738

sys.exit()

2818

1739

2819

1740

# Default values for config file for server-global settings

2820

1741

server_defaults = { "interface": "",

2822

1743

"port": "",

2823

1744

"debug": "False",

2824

1745

"priority":

2825

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

2826

":+SIGN-DSA-SHA256",

1746

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

2827

1747

"servicename": "Mandos",

2828

1748

"use_dbus": "True",

2829

1749

"use_ipv6": "True",

2830

1750

"debuglevel": "",

2831

"restore": "True",

2832

"socket": "",

2833

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

2834

"foreground": "False",

2835

"zeroconf": "True",

2836

}

1751

}

2837

1752

2838

1753

# Parse config file for server-global settings

2839

1754

server_config = configparser.SafeConfigParser(server_defaults)

2840

1755

del server_defaults

2841

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

1756

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

1757

"mandos.conf"))

2842

1758

# Convert the SafeConfigParser object to a dict

2843

1759

server_settings = server_config.defaults()

2844

1760

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

2845

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

1761

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

2846

1762

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

2847

1763

option)

2848

1764

if server_settings["port"]:

2849

1765

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

2850

1766

"port")

2851

if server_settings["socket"]:

2852

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

2853

"socket")

2854

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

2855

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

2856

# happen with a supplied network socket.

2857

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

2858

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

2859

["socket"])

2860

1767

del server_config

2861

1768

2862

1769

# Override the settings from the config file with command line

2863

1770

# options, if set.

2864

1771

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

2865

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

2866

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

2867

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

1772

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

1773

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

2868

1774

value = getattr(options, option)

2869

1775

if value is not None:

2870

1776

server_settings[option] = value

2871

1777

del options

2872

1778

# Force all strings to be unicode

2873

1779

for option in server_settings.keys():

2874

if isinstance(server_settings[option], bytes):

2875

server_settings[option] = (server_settings[option]

2876

.decode("utf-8"))

2877

# Force all boolean options to be boolean

2878

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

2879

"foreground", "zeroconf"):

2880

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

2881

# Debug implies foreground

2882

if server_settings["debug"]:

2883

server_settings["foreground"] = True

1780

if type(server_settings[option]) is str:

1781

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

2884

1782

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

2885

1783

2886

1784

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

2887

1785

2888

if (not server_settings["zeroconf"]

2889

and not (server_settings["port"]

2890

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

2891

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

2892

2893

1786

# For convenience

2894

1787

debug = server_settings["debug"]

2895

1788

debuglevel = server_settings["debuglevel"]

2896

1789

use_dbus = server_settings["use_dbus"]

2897

1790

use_ipv6 = server_settings["use_ipv6"]

2898

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

2899

stored_state_file)

2900

foreground = server_settings["foreground"]

2901

zeroconf = server_settings["zeroconf"]

2902

2903

if debug:

2904

initlogger(debug, logging.DEBUG)

2905

else:

2906

if not debuglevel:

2907

initlogger(debug)

2908

else:

2909

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

2910

initlogger(debug, level)

2911

1791

2912

1792

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

2913

syslogger.setFormatter(

2914

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

2915

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

2916

server_settings["servicename"])))

1793

syslogger.setFormatter(logging.Formatter

1794

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

1795

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

1796

% server_settings["servicename"]))

2917

1797

2918

1798

# Parse config file with clients

2919

client_config = configparser.SafeConfigParser(Client

2920

.client_defaults)

1799

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

1800

"interval": "5m",

1801

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

1802

"host": "",

1803

"approval_delay": "0s",

1804

"approval_duration": "1s",

1805

}

1806

client_config = configparser.SafeConfigParser(client_defaults)

2921

1807

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

2922

1808

"clients.conf"))

2923

1809

2924

1810

global mandos_dbus_service

2925

1811

mandos_dbus_service = None

2926

1812

2927

socketfd = None

2928

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

2929

socketfd = server_settings["socket"]

2930

tcp_server = MandosServer(

2931

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

2932

ClientHandler,

2933

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

2934

use_ipv6=use_ipv6,

2935

gnutls_priority=server_settings["priority"],

2936

use_dbus=use_dbus,

2937

socketfd=socketfd)

2938

if not foreground:

2939

pidfilename = "/run/mandos.pid"

2940

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

2941

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

2942

pidfile = None

1813

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

1814

server_settings["port"]),

1815

ClientHandler,

1816

interface=(server_settings["interface"]

1817

or None),

1818

use_ipv6=use_ipv6,

1819

gnutls_priority=

1820

server_settings["priority"],

1821

use_dbus=use_dbus)

1822

if not debug:

1823

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

2943

1824

try:

2944

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

2945

except IOError as e:

2946

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

2947

exc_info=e)

1825

pidfile = open(pidfilename, "w")

1826

except IOError:

1827

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

2948

1828

2949

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

2950

("mandos", "mandos"),

2951

("nobody", "nogroup")):

1829

try:

1830

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

1831

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

1832

except KeyError:

2952

1833

try:

2953

uid = pwd.getpwnam(name).pw_uid

2954

gid = pwd.getpwnam(group).pw_gid

2955

break

1834

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

1835

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

2956

1836

except KeyError:

2957

continue

2958

else:

2959

uid = 65534

2960

gid = 65534

1837

try:

1838

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

1839

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

1840

except KeyError:

1841

uid = 65534

1842

gid = 65534

2961

1843

try:

2962

1844

os.setgid(gid)

2963

1845

os.setuid(uid)

2964

if debug:

2965

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

2966

gid))

2967

1846

except OSError as error:

2968

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

2969

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

2970

if error.errno != errno.EPERM:

2971

raise

1847

if error[0] != errno.EPERM:

1848

raise error

2972

1849

1850

if not debug and not debuglevel:

1851

syslogger.setLevel(logging.WARNING)

1852

console.setLevel(logging.WARNING)

1853

if debuglevel:

1854

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

1855

syslogger.setLevel(level)

1856

console.setLevel(level)

1857

2973

1858

if debug:

2974

1859

# Enable all possible GnuTLS debugging

2975

1860

2976

1861

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

2977

1862

# - GnuTLS manual

2978

gnutls.global_set_log_level(11)

1863

gnutls.library.functions.gnutls_global_set_log_level(11)

2979

1864

2980

@gnutls.log_func

1865

@gnutls.library.types.gnutls_log_func

2981

1866

def debug_gnutls(level, string):

2982

1867

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

2983

1868

2984

gnutls.global_set_log_function(debug_gnutls)

1869

(gnutls.library.functions

1870

.gnutls_global_set_log_function(debug_gnutls))

2985

1871

2986

1872

# Redirect stdin so all checkers get /dev/null

2987

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

1873

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

2988

1874

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

2989

1875

if null > 2:

2990

1876

os.close(null)

1877

else:

1878

# No console logging

1879

logger.removeHandler(console)

2991

1880

2992

1881

# Need to fork before connecting to D-Bus

2993

if not foreground:

1882

if not debug:

2994

1883

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

2995

1884

daemon()

2996

1885

2997

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

2998

# to inform GLib that threads will be used.

2999

GLib.threads_init()

3000

3001

1886

global main_loop

3002

1887

# From the Avahi example code

3003

DBusGMainLoop(set_as_default=True)

3004

main_loop = GLib.MainLoop()

1888

DBusGMainLoop(set_as_default=True )

1889

main_loop = gobject.MainLoop()

3005

1890

bus = dbus.SystemBus()

3006

1891

# End of Avahi example code

3007

1892

if use_dbus:

3008

1893

try:

3009

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

3010

bus,

3011

do_not_queue=True)

3012

old_bus_name = dbus.service.BusName(

3013

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

3014

do_not_queue=True)

3015

except dbus.exceptions.DBusException as e:

3016

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

1894

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

1895

bus, do_not_queue=True)

1896

except dbus.exceptions.NameExistsException as e:

1897

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

3017

1898

use_dbus = False

3018

1899

server_settings["use_dbus"] = False

3019

1900

tcp_server.use_dbus = False

3020

if zeroconf:

3021

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

3022

service = AvahiServiceToSyslog(

3023

name = server_settings["servicename"],

3024

servicetype = "_mandos._tcp",

3025

protocol = protocol,

3026

bus = bus)

3027

if server_settings["interface"]:

3028

service.interface = if_nametoindex(

3029

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

1901

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

1902

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

1903

servicetype = "_mandos._tcp",

1904

protocol = protocol, bus = bus)

1905

if server_settings["interface"]:

1906

service.interface = (if_nametoindex

1907

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

3030

1908

3031

1909

global multiprocessing_manager

3032

1910

multiprocessing_manager = multiprocessing.Manager()

3034

1912

client_class = Client

3035

1913

if use_dbus:

3036

1914

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

3037

3038

client_settings = Client.config_parser(client_config)

3039

old_client_settings = {}

3040

clients_data = {}

3041

3042

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

3043

global wnull

3044

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

3045

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

3046

# mode

3047

if debug or not foreground:

3048

wnull.close()

3049

3050

# Get client data and settings from last running state.

3051

if server_settings["restore"]:

3052

try:

3053

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

3054

if sys.version_info.major == 2:

3055

clients_data, old_client_settings = pickle.load(

3056

stored_state)

3057

else:

3058

bytes_clients_data, bytes_old_client_settings = (

3059

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

3060

### Fix bytes to strings

3061

## clients_data

3062

# .keys()

3063

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

3064

if isinstance(key, bytes)

3065

else key): value

3066

for key, value in

3067

bytes_clients_data.items() }

3068

del bytes_clients_data

3069

for key in clients_data:

3070

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

3071

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

3072

for k, v in

3073

clients_data[key].items() }

3074

clients_data[key] = value

3075

# .client_structure

3076

value["client_structure"] = [

3077

(s.decode("utf-8")

3078

if isinstance(s, bytes)

3079

else s) for s in

3080

value["client_structure"] ]

3081

# .name & .host

3082

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

3083

if isinstance(value[k], bytes):

3084

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

3085

## old_client_settings

3086

# .keys()

3087

old_client_settings = {

3088

(key.decode("utf-8")

3089

if isinstance(key, bytes)

3090

else key): value

3091

for key, value in

3092

bytes_old_client_settings.items() }

3093

del bytes_old_client_settings

3094

# .host

3095

for value in old_client_settings.values():

3096

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

3097

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

3098

.decode("utf-8"))

3099

os.remove(stored_state_path)

3100

except IOError as e:

3101

if e.errno == errno.ENOENT:

3102

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

3103

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

3104

else:

3105

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

3106

exc_info=e)

3107

raise

3108

except EOFError as e:

3109

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

3110

"EOFError:",

3111

exc_info=e)

3112

3113

with PGPEngine() as pgp:

3114

for client_name, client in clients_data.items():

3115

# Skip removed clients

3116

if client_name not in client_settings:

3117

continue

3118

3119

# Decide which value to use after restoring saved state.

3120

# We have three different values: Old config file,

3121

# new config file, and saved state.

3122

# New config value takes precedence if it differs from old

3123

# config value, otherwise use saved state.

3124

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

3125

try:

3126

# For each value in new config, check if it

3127

# differs from the old config value (Except for

3128

# the "secret" attribute)

3129

if (name != "secret"

3130

and (value !=

3131

old_client_settings[client_name][name])):

3132

client[name] = value

3133

except KeyError:

3134

pass

3135

3136

# Clients who has passed its expire date can still be

3137

# enabled if its last checker was successful. A Client

3138

# whose checker succeeded before we stored its state is

3139

# assumed to have successfully run all checkers during

3140

# downtime.

3141

if client["enabled"]:

3142

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

3143

if not client["last_checked_ok"]:

3144

logger.warning(

3145

"disabling client {} - Client never "

3146

"performed a successful checker".format(

3147

client_name))

3148

client["enabled"] = False

3149

elif client["last_checker_status"] != 0:

3150

logger.warning(

3151

"disabling client {} - Client last"

3152

" checker failed with error code"

3153

" {}".format(

3154

client_name,

3155

client["last_checker_status"]))

3156

client["enabled"] = False

3157

else:

3158

client["expires"] = (

3159

datetime.datetime.utcnow()

3160

+ client["timeout"])

3161

logger.debug("Last checker succeeded,"

3162

" keeping {} enabled".format(

3163

client_name))

1915

def client_config_items(config, section):

1916

special_settings = {

1917

"approved_by_default":

1918

lambda: config.getboolean(section,

1919

"approved_by_default"),

1920

}

1921

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

3164

1922

try:

3165

client["secret"] = pgp.decrypt(

3166

client["encrypted_secret"],

3167

client_settings[client_name]["secret"])

3168

except PGPError:

3169

# If decryption fails, we use secret from new settings

3170

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

3171

client_name))

3172

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

3173

["secret"])

3174

3175

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

3176

for client_name in (set(old_client_settings)

3177

- set(client_settings)):

3178

del clients_data[client_name]

3179

for client_name in (set(client_settings)

3180

- set(old_client_settings)):

3181

clients_data[client_name] = client_settings[client_name]

3182

3183

# Create all client objects

3184

for client_name, client in clients_data.items():

3185

tcp_server.clients[client_name] = client_class(

3186

name = client_name,

3187

settings = client,

3188

server_settings = server_settings)

3189

1923

yield (name, special_settings[name]())

1924

except KeyError:

1925

yield (name, value)

1926

1927

tcp_server.clients.update(set(

1928

client_class(name = section,

1929

config= dict(client_config_items(

1930

client_config, section)))

1931

for section in client_config.sections()))

3190

1932

if not tcp_server.clients:

3191

1933

logger.warning("No clients defined")

3192

3193

if not foreground:

3194

if pidfile is not None:

3195

pid = os.getpid()

3196

try:

3197

with pidfile:

3198

print(pid, file=pidfile)

3199

except IOError:

3200

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

3201

pidfilename, pid)

3202

del pidfile

1934

1935

if not debug:

1936

try:

1937

with pidfile:

1938

pid = os.getpid()

1939

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

1940

del pidfile

1941

except IOError:

1942

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

1943

pidfilename, pid)

1944

except NameError:

1945

# "pidfile" was never created

1946

pass

3203

1947

del pidfilename

3204

3205

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

3206

GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,

3207

lambda: main_loop.quit() and False)

1948

1949

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

1950

1951

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

1952

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

3208

1953

3209

1954

if use_dbus:

3210

3211

@alternate_dbus_interfaces(

3212

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

3213

class MandosDBusService(DBusObjectWithObjectManager):

1955

class MandosDBusService(dbus.service.Object):

3214

1956

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

3215

3216

1957

def __init__(self):

3217

1958

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

3218

3219

_interface = "se.recompile.Mandos"

1959

_interface = "se.bsnet.fukt.Mandos"

3220

1960

3221

1961

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

3222

1962

def ClientAdded(self, objpath):

3228

1968

"D-Bus signal"

3229

1969

pass

3230

1970

3231

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

3232

"true"})

3233

1971

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

3234

1972

def ClientRemoved(self, objpath, name):

3235

1973

"D-Bus signal"

3236

1974

pass

3237

1975

3238

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

3239

"true"})

3240

1976

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

3241

1977

def GetAllClients(self):

3242

1978

"D-Bus method"

3243

return dbus.Array(c.dbus_object_path for c in

3244

tcp_server.clients.values())

1979

return dbus.Array(c.dbus_object_path

1980

for c in tcp_server.clients)

3245

1981

3246

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

3247

"true"})

3248

1982

@dbus.service.method(_interface,

3249

1983

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

3250

1984

def GetAllClientsWithProperties(self):

3251

1985

"D-Bus method"

3252

1986

return dbus.Dictionary(

3253

{ c.dbus_object_path: c.GetAll(

3254

"se.recompile.Mandos.Client")

3255

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

1987

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

1988

for c in tcp_server.clients),

3256

1989

signature="oa{sv}")

3257

1990

3258

1991

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

3259

1992

def RemoveClient(self, object_path):

3260

1993

"D-Bus method"

3261

for c in tcp_server.clients.values():

1994

for c in tcp_server.clients:

3262

1995

if c.dbus_object_path == object_path:

3263

del tcp_server.clients[c.name]

1996

tcp_server.clients.remove(c)

3264

1997

c.remove_from_connection()

3265

# Don't signal the disabling

1998

# Don't signal anything except ClientRemoved

3266

1999

c.disable(quiet=True)

3267

# Emit D-Bus signal for removal

3268

self.client_removed_signal(c)

2000

# Emit D-Bus signal

2001

self.ClientRemoved(object_path, c.name)

3269

2002

return

3270

2003

raise KeyError(object_path)

3271

2004

3272

2005

del _interface

3273

3274

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

3275

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

3276

def GetManagedObjects(self):

3277

"""D-Bus method"""

3278

return dbus.Dictionary(

3279

{ client.dbus_object_path:

3280

dbus.Dictionary(

3281

{ interface: client.GetAll(interface)

3282

for interface in

3283

client._get_all_interface_names()})

3284

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

3285

3286

def client_added_signal(self, client):

3287

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

3288

if use_dbus:

3289

# New standard signal

3290

self.InterfacesAdded(

3291

client.dbus_object_path,

3292

dbus.Dictionary(

3293

{ interface: client.GetAll(interface)

3294

for interface in

3295

client._get_all_interface_names()}))

3296

# Old signal

3297

self.ClientAdded(client.dbus_object_path)

3298

3299

def client_removed_signal(self, client):

3300

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

3301

if use_dbus:

3302

# New standard signal

3303

self.InterfacesRemoved(

3304

client.dbus_object_path,

3305

client._get_all_interface_names())

3306

# Old signal

3307

self.ClientRemoved(client.dbus_object_path,

3308

client.name)

3309

2006

3310

2007

mandos_dbus_service = MandosDBusService()

3311

2008

3312

2009

def cleanup():

3313

2010

"Cleanup function; run on exit"

3314

if zeroconf:

3315

service.cleanup()

3316

3317

multiprocessing.active_children()

3318

wnull.close()

3319

if not (tcp_server.clients or client_settings):

3320

return

3321

3322

# Store client before exiting. Secrets are encrypted with key

3323

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

3324

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

3325

clients = {}

3326

with PGPEngine() as pgp:

3327

for client in tcp_server.clients.values():

3328

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

3329

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

3330

key)

3331

client_dict = {}

3332

3333

# A list of attributes that can not be pickled

3334

# + secret.

3335

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

3336

"checker", "server_settings" }

3337

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

3338

.Object):

3339

exclude.add(name)

3340

3341

client_dict["encrypted_secret"] = (client

3342

.encrypted_secret)

3343

for attr in client.client_structure:

3344

if attr not in exclude:

3345

client_dict[attr] = getattr(client, attr)

3346

3347

clients[client.name] = client_dict

3348

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

3349

3350

try:

3351

with tempfile.NamedTemporaryFile(

3352

mode='wb',

3353

suffix=".pickle",

3354

prefix='clients-',

3355

dir=os.path.dirname(stored_state_path),

3356

delete=False) as stored_state:

3357

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

3358

protocol = 2)

3359

tempname = stored_state.name

3360

os.rename(tempname, stored_state_path)

3361

except (IOError, OSError) as e:

3362

if not debug:

3363

try:

3364

os.remove(tempname)

3365

except NameError:

3366

pass

3367

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

3368

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

3369

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

3370

else:

3371

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

3372

exc_info=e)

3373

raise

3374

3375

# Delete all clients, and settings from config

2011

service.cleanup()

2012

3376

2013

while tcp_server.clients:

3377

name, client = tcp_server.clients.popitem()

2014

client = tcp_server.clients.pop()

3378

2015

if use_dbus:

3379

2016

client.remove_from_connection()

3380

# Don't signal the disabling

2017

client.disable_hook = None

2018

# Don't signal anything except ClientRemoved

3381

2019

client.disable(quiet=True)

3382

# Emit D-Bus signal for removal

3383

2020

if use_dbus:

3384

mandos_dbus_service.client_removed_signal(client)

3385

client_settings.clear()

2021

# Emit D-Bus signal

2022

mandos_dbus_service.ClientRemoved(client.dbus_object_path,

2023

client.name)

3386

2024

3387

2025

atexit.register(cleanup)

3388

2026

3389

for client in tcp_server.clients.values():

2027

for client in tcp_server.clients:

3390

2028

if use_dbus:

3391

# Emit D-Bus signal for adding

3392

mandos_dbus_service.client_added_signal(client)

3393

# Need to initiate checking of clients

3394

if client.enabled:

3395

client.init_checker()

2029

# Emit D-Bus signal

2030

mandos_dbus_service.ClientAdded(client.dbus_object_path)

2031

client.enable()

3396

2032

3397

2033

tcp_server.enable()

3398

2034

tcp_server.server_activate()

3399

2035

3400

2036

# Find out what port we got

3401

if zeroconf:

3402

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

2037

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

3403

2038

if use_ipv6:

3404

2039

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

3405

" flowinfo %d, scope_id %d",

3406

*tcp_server.socket.getsockname())

2040

" flowinfo %d, scope_id %d"

2041

% tcp_server.socket.getsockname())

3407

2042

else: # IPv4

3408

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

3409

*tcp_server.socket.getsockname())

2043

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

2044

% tcp_server.socket.getsockname())

3410

2045

3411

2046

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

3412

2047

3413

2048

try:

3414

if zeroconf:

3415

# From the Avahi example code

3416

try:

3417

service.activate()

3418

except dbus.exceptions.DBusException as error:

3419

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

3420

cleanup()

3421

sys.exit(1)

3422

# End of Avahi example code

2049

# From the Avahi example code

2050

try:

2051

service.activate()

2052

except dbus.exceptions.DBusException as error:

2053

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

2054

cleanup()

2055

sys.exit(1)

2056

# End of Avahi example code

3423

2057

3424

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

3425

lambda *args, **kwargs:

3426

(tcp_server.handle_request

3427

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

2058

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

2059

lambda *args, **kwargs:

2060

(tcp_server.handle_request

2061

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

3428

2062

3429

2063

logger.debug("Starting main loop")

3430

2064

main_loop.run()

3431

2065

except AvahiError as error:

3432

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

2066

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

3433

2067

cleanup()

3434

2068

sys.exit(1)

3435

2069

except KeyboardInterrupt:

3440

2074

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

3441

2075

cleanup()

3442

2076

3443

3444

2077

if __name__ == '__main__':

3445

2078

main()