/mandos/release : revision 237.25.5

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#!/usr/bin/python

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#!/usr/bin/python2.7

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# -*- mode: python; coding: utf-8 -*-

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#

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#

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# Mandos server - give out binary blobs to connecting clients.

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#

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#

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# This program is partly derived from an example program for an Avahi

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# service publisher, downloaded from

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# <http://avahi.org/wiki/PythonPublishExample>. This includes the

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# methods "add", "remove", "server_state_changed",

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# "entry_group_state_changed", "cleanup", and "activate" in the

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# "AvahiService" class, and some lines in "main".

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#

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#

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# Everything else is

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#

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# This file is part of Mandos.

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#

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# Mandos is free software: you can redistribute it and/or modify it

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# under the terms of the GNU General Public License as published by

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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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# the Free Software Foundation, either version 3 of the License, or

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# (at your option) any later version.

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#

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# Mandos is distributed in the hope that it will be useful, but

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# WITHOUT ANY WARRANTY; without even the implied warranty of

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# This program is distributed in the hope that it will be useful,

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# but WITHOUT ANY WARRANTY; without even the implied warranty of

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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

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# GNU General Public License for more details.

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#

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#

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# You should have received a copy of the GNU General Public License

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# along with Mandos. If not, see <http://www.gnu.org/licenses/>.

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#

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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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#

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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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from future_builtins import *

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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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import xml.dom.minidom

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import inspect

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# Try to find the value of SO_BINDTODEVICE:

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try:

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# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and

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# newer, and it is also the most natural place for it:

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SO_BINDTODEVICE = socket.SO_BINDTODEVICE

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except AttributeError:

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try:

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# This is where SO_BINDTODEVICE was up to and including Python

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# 2.6, and also 3.2:

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from IN import SO_BINDTODEVICE

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except ImportError:

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# In Python 2.7 it seems to have been removed entirely.

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# Try running the C preprocessor:

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try:

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cc = subprocess.Popen(["cc", "--language=c", "-E",

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"/dev/stdin"],

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stdin=subprocess.PIPE,

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stdout=subprocess.PIPE)

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stdout = cc.communicate(

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"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]

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SO_BINDTODEVICE = int(stdout.splitlines()[-1])

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except (OSError, ValueError, IndexError):

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# No value found

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SO_BINDTODEVICE = None

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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 = "1.8.4"

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version = "1.6.9"

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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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if_nametoindex = (ctypes.cdll.LoadLibrary

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

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.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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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 = (logging.handlers.SysLogHandler

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(facility =

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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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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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'--home', 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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'--quiet',

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'--no-use-agent']

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def __enter__(self):

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return self

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

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self._cleanup()

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return False

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def __del__(self):

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self._cleanup()

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def _cleanup(self):

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if self.tempdir is not None:

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# Delete contents of tempdir

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

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topdown=False):

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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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# Remove tempdir

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os.rmdir(self.tempdir)

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self.tempdir = None

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175

229

176

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

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

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return encoded

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240

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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:

189

with tempfile.NamedTemporaryFile(dir=self.tempdir

190

) 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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proc = subprocess.Popen(['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)

253

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

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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

257

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def decrypt(self, data, password):

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passphrase = self.password_encode(password)

260

with tempfile.NamedTemporaryFile(

261

dir=self.tempdir) as passfile:

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with tempfile.NamedTemporaryFile(dir = self.tempdir

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

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'--passphrase-file',

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passfile.name]

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+ self.gnupgargs,

268

stdin=subprocess.PIPE,

269

stdout=subprocess.PIPE,

270

stderr=subprocess.PIPE)

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

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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

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= data)

272

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if proc.returncode != 0:

273

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raise PGPError(err)

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222

return decrypted_plaintext

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223

276

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277

# Pretend that we have an Avahi module

278

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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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"

285

DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"

286

DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"

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DBUS_PATH_SERVER = "/"

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289

@staticmethod

290

def string_array_to_txt_array(t):

291

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

296

SERVER_INVALID = 0 # avahi-common/defs.h

297

SERVER_REGISTERING = 1 # avahi-common/defs.h

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SERVER_RUNNING = 2 # avahi-common/defs.h

299

SERVER_COLLISION = 3 # avahi-common/defs.h

300

SERVER_FAILURE = 4 # avahi-common/defs.h

301

302

303

225

class AvahiError(Exception):

304

226

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

305

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self.value = value

306

228

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

307

229

**kwargs)

308

230

309

310

231

class AvahiServiceError(AvahiError):

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232

pass

312

233

313

314

234

class AvahiGroupError(AvahiError):

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235

pass

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236

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237

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class AvahiService(object):

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"""An Avahi (Zeroconf) service.

320

240

321

241

Attributes:

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

323

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Used to optionally bind to the specified interface.

335

255

server: D-Bus Server

336

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bus: dbus.SystemBus()

337

257

"""

338

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def __init__(self,

340

interface=avahi.IF_UNSPEC,

341

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="",

347

max_renames=32768,

348

protocol=avahi.PROTO_UNSPEC,

349

bus=None):

258

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

260

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

261

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

262

protocol = avahi.PROTO_UNSPEC, bus = None):

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self.interface = interface

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264

self.name = name

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265

self.type = servicetype

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274

self.server = None

362

275

self.bus = bus

363

276

self.entry_group_state_changed_match = None

364

277

365

278

def rename(self, remove=True):

366

279

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

367

280

if self.rename_count >= self.max_renames:

369

282

" after %i retries, exiting.",

370

283

self.rename_count)

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284

raise AvahiServiceError("Too many renames")

372

self.name = str(

373

self.server.GetAlternativeServiceName(self.name))

285

self.name = str(self.server

286

.GetAlternativeServiceName(self.name))

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self.rename_count += 1

375

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

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289

self.name)

387

300

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

388

301

self.cleanup()

389

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os._exit(1)

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303

391

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def remove(self):

392

305

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

393

306

if self.entry_group_state_changed_match is not None:

395

308

self.entry_group_state_changed_match = None

396

309

if self.group is not None:

397

310

self.group.Reset()

398

311

399

312

def add(self):

400

313

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

401

314

self.remove()

418

331

dbus.UInt16(self.port),

419

332

avahi.string_array_to_txt_array(self.TXT))

420

333

self.group.Commit()

421

334

422

335

def entry_group_state_changed(self, state, error):

423

336

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

424

337

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

425

338

426

339

if state == avahi.ENTRY_GROUP_ESTABLISHED:

427

340

logger.debug("Zeroconf service established.")

428

341

elif state == avahi.ENTRY_GROUP_COLLISION:

431

344

elif state == avahi.ENTRY_GROUP_FAILURE:

432

345

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

433

346

str(error))

434

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

435

347

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

348

.format(error))

349

436

350

def cleanup(self):

437

351

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

438

352

if self.group is not None:

443

357

pass

444

358

self.group = None

445

359

self.remove()

446

360

447

361

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

448

362

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

449

363

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

450

bad_states = {

451

avahi.SERVER_INVALID: "Zeroconf server invalid",

452

avahi.SERVER_REGISTERING: None,

453

avahi.SERVER_COLLISION: "Zeroconf server name collision",

454

avahi.SERVER_FAILURE: "Zeroconf server failure",

455

}

364

bad_states = { avahi.SERVER_INVALID:

365

"Zeroconf server invalid",

366

avahi.SERVER_REGISTERING: None,

367

avahi.SERVER_COLLISION:

368

"Zeroconf server name collision",

369

avahi.SERVER_FAILURE:

370

"Zeroconf server failure" }

456

371

if state in bad_states:

457

372

if bad_states[state] is not None:

458

373

if error is None:

461

376

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

462

377

self.cleanup()

463

378

elif state == avahi.SERVER_RUNNING:

464

try:

465

self.add()

466

except dbus.exceptions.DBusException as error:

467

if (error.get_dbus_name()

468

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

469

logger.info("Local Zeroconf service name"

470

" collision.")

471

return self.rename(remove=False)

472

else:

473

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

474

self.cleanup()

475

os._exit(1)

379

self.add()

476

380

else:

477

381

if error is None:

478

382

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

479

383

else:

480

384

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

481

385

482

386

def activate(self):

483

387

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

484

388

if self.server is None:

488

392

follow_name_owner_changes=True),

489

393

avahi.DBUS_INTERFACE_SERVER)

490

394

self.server.connect_to_signal("StateChanged",

491

self.server_state_changed)

395

self.server_state_changed)

492

396

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

493

397

494

398

495

399

class AvahiServiceToSyslog(AvahiService):

496

400

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

497

401

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

498

ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)

499

syslogger.setFormatter(logging.Formatter(

500

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

501

.format(self.name)))

402

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

403

syslogger.setFormatter(logging.Formatter

404

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

405

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

406

.format(self.name)))

502

407

return ret

503

408

504

409

505

# Pretend that we have a GnuTLS module

506

class gnutls(object):

507

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

508

509

library = ctypes.util.find_library("gnutls")

510

if library is None:

511

library = ctypes.util.find_library("gnutls-deb0")

512

_library = ctypes.cdll.LoadLibrary(library)

513

del library

514

515

# Unless otherwise indicated, the constants and types below are

516

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

517

518

# Constants

519

E_SUCCESS = 0

520

E_INTERRUPTED = -52

521

E_AGAIN = -28

522

CRT_OPENPGP = 2

523

CRT_RAWPK = 3

524

CLIENT = 2

525

SHUT_RDWR = 0

526

CRD_CERTIFICATE = 1

527

E_NO_CERTIFICATE_FOUND = -49

528

X509_FMT_DER = 0

529

NO_TICKETS = 1<<10

530

ENABLE_RAWPK = 1<<18

531

CTYPE_PEERS = 3

532

KEYID_USE_SHA256 = 1 # gnutls/x509.h

533

OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h

534

535

# Types

536

class session_int(ctypes.Structure):

537

_fields_ = []

538

session_t = ctypes.POINTER(session_int)

539

540

class certificate_credentials_st(ctypes.Structure):

541

_fields_ = []

542

certificate_credentials_t = ctypes.POINTER(

543

certificate_credentials_st)

544

certificate_type_t = ctypes.c_int

545

546

class datum_t(ctypes.Structure):

547

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

548

('size', ctypes.c_uint)]

549

550

class openpgp_crt_int(ctypes.Structure):

551

_fields_ = []

552

openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)

553

openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h

554

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

555

credentials_type_t = ctypes.c_int

556

transport_ptr_t = ctypes.c_void_p

557

close_request_t = ctypes.c_int

558

559

# Exceptions

560

class Error(Exception):

561

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

562

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

563

# code is passed, convert it to a string with

564

# gnutls.strerror()

565

self.code = code

566

if message is None and code is not None:

567

message = gnutls.strerror(code)

568

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

569

message, *args)

570

571

class CertificateSecurityError(Error):

572

pass

573

574

# Classes

575

class Credentials(object):

576

def __init__(self):

577

self._c_object = gnutls.certificate_credentials_t()

578

gnutls.certificate_allocate_credentials(

579

ctypes.byref(self._c_object))

580

self.type = gnutls.CRD_CERTIFICATE

581

582

def __del__(self):

583

gnutls.certificate_free_credentials(self._c_object)

584

585

class ClientSession(object):

586

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

587

self._c_object = gnutls.session_t()

588

gnutls_flags = gnutls.CLIENT

589

if gnutls.check_version("3.5.6"):

590

gnutls_flags |= gnutls.NO_TICKETS

591

if gnutls.has_rawpk:

592

gnutls_flags |= gnutls.ENABLE_RAWPK

593

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

594

del gnutls_flags

595

gnutls.set_default_priority(self._c_object)

596

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

597

gnutls.handshake_set_private_extensions(self._c_object,

598

True)

599

self.socket = socket

600

if credentials is None:

601

credentials = gnutls.Credentials()

602

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

603

ctypes.cast(credentials._c_object,

604

ctypes.c_void_p))

605

self.credentials = credentials

606

607

def __del__(self):

608

gnutls.deinit(self._c_object)

609

610

def handshake(self):

611

return gnutls.handshake(self._c_object)

612

613

def send(self, data):

614

data = bytes(data)

615

data_len = len(data)

616

while data_len > 0:

617

data_len -= gnutls.record_send(self._c_object,

618

data[-data_len:],

619

data_len)

620

621

def bye(self):

622

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

623

624

# Error handling functions

625

def _error_code(result):

626

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

627

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

628

if result >= 0:

629

return result

630

if result == gnutls.E_NO_CERTIFICATE_FOUND:

631

raise gnutls.CertificateSecurityError(code=result)

632

raise gnutls.Error(code=result)

633

634

def _retry_on_error(result, func, arguments):

635

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

636

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

637

while result < 0:

638

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

639

return _error_code(result)

640

result = func(*arguments)

641

return result

642

643

# Unless otherwise indicated, the function declarations below are

644

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

645

646

# Functions

647

priority_set_direct = _library.gnutls_priority_set_direct

648

priority_set_direct.argtypes = [session_t, ctypes.c_char_p,

649

ctypes.POINTER(ctypes.c_char_p)]

650

priority_set_direct.restype = _error_code

651

652

init = _library.gnutls_init

653

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

654

init.restype = _error_code

655

656

set_default_priority = _library.gnutls_set_default_priority

657

set_default_priority.argtypes = [session_t]

658

set_default_priority.restype = _error_code

659

660

record_send = _library.gnutls_record_send

661

record_send.argtypes = [session_t, ctypes.c_void_p,

662

ctypes.c_size_t]

663

record_send.restype = ctypes.c_ssize_t

664

record_send.errcheck = _retry_on_error

665

666

certificate_allocate_credentials = (

667

_library.gnutls_certificate_allocate_credentials)

668

certificate_allocate_credentials.argtypes = [

669

ctypes.POINTER(certificate_credentials_t)]

670

certificate_allocate_credentials.restype = _error_code

671

672

certificate_free_credentials = (

673

_library.gnutls_certificate_free_credentials)

674

certificate_free_credentials.argtypes = [

675

certificate_credentials_t]

676

certificate_free_credentials.restype = None

677

678

handshake_set_private_extensions = (

679

_library.gnutls_handshake_set_private_extensions)

680

handshake_set_private_extensions.argtypes = [session_t,

681

ctypes.c_int]

682

handshake_set_private_extensions.restype = None

683

684

credentials_set = _library.gnutls_credentials_set

685

credentials_set.argtypes = [session_t, credentials_type_t,

686

ctypes.c_void_p]

687

credentials_set.restype = _error_code

688

689

strerror = _library.gnutls_strerror

690

strerror.argtypes = [ctypes.c_int]

691

strerror.restype = ctypes.c_char_p

692

693

certificate_type_get = _library.gnutls_certificate_type_get

694

certificate_type_get.argtypes = [session_t]

695

certificate_type_get.restype = _error_code

696

697

certificate_get_peers = _library.gnutls_certificate_get_peers

698

certificate_get_peers.argtypes = [session_t,

699

ctypes.POINTER(ctypes.c_uint)]

700

certificate_get_peers.restype = ctypes.POINTER(datum_t)

701

702

global_set_log_level = _library.gnutls_global_set_log_level

703

global_set_log_level.argtypes = [ctypes.c_int]

704

global_set_log_level.restype = None

705

706

global_set_log_function = _library.gnutls_global_set_log_function

707

global_set_log_function.argtypes = [log_func]

708

global_set_log_function.restype = None

709

710

deinit = _library.gnutls_deinit

711

deinit.argtypes = [session_t]

712

deinit.restype = None

713

714

handshake = _library.gnutls_handshake

715

handshake.argtypes = [session_t]

716

handshake.restype = _error_code

717

handshake.errcheck = _retry_on_error

718

719

transport_set_ptr = _library.gnutls_transport_set_ptr

720

transport_set_ptr.argtypes = [session_t, transport_ptr_t]

721

transport_set_ptr.restype = None

722

723

bye = _library.gnutls_bye

724

bye.argtypes = [session_t, close_request_t]

725

bye.restype = _error_code

726

bye.errcheck = _retry_on_error

727

728

check_version = _library.gnutls_check_version

729

check_version.argtypes = [ctypes.c_char_p]

730

check_version.restype = ctypes.c_char_p

731

732

_need_version = b"3.3.0"

733

if check_version(_need_version) is None:

734

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

735

.format(_need_version))

736

737

_tls_rawpk_version = b"3.6.6"

738

has_rawpk = bool(check_version(_tls_rawpk_version))

739

740

if has_rawpk:

741

# Types

742

class pubkey_st(ctypes.Structure):

743

_fields = []

744

pubkey_t = ctypes.POINTER(pubkey_st)

745

746

x509_crt_fmt_t = ctypes.c_int

747

748

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

749

pubkey_init = _library.gnutls_pubkey_init

750

pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]

751

pubkey_init.restype = _error_code

752

753

pubkey_import = _library.gnutls_pubkey_import

754

pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),

755

x509_crt_fmt_t]

756

pubkey_import.restype = _error_code

757

758

pubkey_get_key_id = _library.gnutls_pubkey_get_key_id

759

pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,

760

ctypes.POINTER(ctypes.c_ubyte),

761

ctypes.POINTER(ctypes.c_size_t)]

762

pubkey_get_key_id.restype = _error_code

763

764

pubkey_deinit = _library.gnutls_pubkey_deinit

765

pubkey_deinit.argtypes = [pubkey_t]

766

pubkey_deinit.restype = None

767

else:

768

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

769

770

openpgp_crt_init = _library.gnutls_openpgp_crt_init

771

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

772

openpgp_crt_init.restype = _error_code

773

774

openpgp_crt_import = _library.gnutls_openpgp_crt_import

775

openpgp_crt_import.argtypes = [openpgp_crt_t,

776

ctypes.POINTER(datum_t),

777

openpgp_crt_fmt_t]

778

openpgp_crt_import.restype = _error_code

779

780

openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self

781

openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,

782

ctypes.POINTER(ctypes.c_uint)]

783

openpgp_crt_verify_self.restype = _error_code

784

785

openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit

786

openpgp_crt_deinit.argtypes = [openpgp_crt_t]

787

openpgp_crt_deinit.restype = None

788

789

openpgp_crt_get_fingerprint = (

790

_library.gnutls_openpgp_crt_get_fingerprint)

791

openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,

792

ctypes.c_void_p,

793

ctypes.POINTER(

794

ctypes.c_size_t)]

795

openpgp_crt_get_fingerprint.restype = _error_code

796

797

if check_version("3.6.4"):

798

certificate_type_get2 = _library.gnutls_certificate_type_get2

799

certificate_type_get2.argtypes = [session_t, ctypes.c_int]

800

certificate_type_get2.restype = _error_code

801

802

# Remove non-public functions

803

del _error_code, _retry_on_error

804

805

806

def call_pipe(connection, # : multiprocessing.Connection

807

func, *args, **kwargs):

808

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

809

810

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

811

return value on the provided multiprocessing.Connection.

812

"""

813

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

814

connection.close()

815

816

817

410

class Client(object):

818

411

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

819

412

820

413

Attributes:

821

414

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

822

415

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

824

417

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

825

418

to see if the client lives.

826

419

'None' if no process is running.

827

checker_callback_tag: a GLib event source tag, or None

420

checker_callback_tag: a gobject event source tag, or None

828

421

checker_command: string; External command which is run to check

829

422

if client lives. %() expansions are done at

830

423

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

831

424

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

832

checker_initiator_tag: a GLib event source tag, or None

425

checker_initiator_tag: a gobject event source tag, or None

833

426

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

834

427

client_structure: Object describing what attributes a client has

835

428

and is used for storing the client at exit

836

429

current_checker_command: string; current running checker_command

837

disable_initiator_tag: a GLib event source tag, or None

430

disable_initiator_tag: a gobject event source tag, or None

838

431

enabled: bool()

839

432

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

840

uniquely identify an OpenPGP client

841

key_id: string (64 hexadecimal digits); used to uniquely identify

842

a client using raw public keys

433

uniquely identify the client

843

434

host: string; available for use by the checker command

844

435

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

845

436

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

847

438

last_checker_status: integer between 0 and 255 reflecting exit

848

439

status of last checker. -1 reflects crashed

849

440

checker, -2 means no checker completed yet.

850

last_checker_signal: The signal which killed the last checker, if

851

last_checker_status is -1

852

441

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

853

442

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

854

443

D-Bus identifiers

861

450

disabled, or None

862

451

server_settings: The server_settings dict from main()

863

452

"""

864

453

865

454

runtime_expansions = ("approval_delay", "approval_duration",

866

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

455

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

867

456

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

868

457

"last_approval_request", "last_checked_ok",

869

458

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

870

client_defaults = {

871

"timeout": "PT5M",

872

"extended_timeout": "PT15M",

873

"interval": "PT2M",

874

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

875

"host": "",

876

"approval_delay": "PT0S",

877

"approval_duration": "PT1S",

878

"approved_by_default": "True",

879

"enabled": "True",

880

}

881

459

client_defaults = { "timeout": "PT5M",

460

"extended_timeout": "PT15M",

461

"interval": "PT2M",

462

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

463

"host": "",

464

"approval_delay": "PT0S",

465

"approval_duration": "PT1S",

466

"approved_by_default": "True",

467

"enabled": "True",

468

}

469

882

470

@staticmethod

883

471

def config_parser(config):

884

472

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

891

479

for client_name in config.sections():

892

480

section = dict(config.items(client_name))

893

481

client = settings[client_name] = {}

894

482

895

483

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

896

484

# Reformat values from string types to Python types

897

485

client["approved_by_default"] = config.getboolean(

898

486

client_name, "approved_by_default")

899

487

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

900

488

"enabled")

901

902

# Uppercase and remove spaces from key_id and fingerprint

903

# for later comparison purposes with return value from the

904

# key_id() and fingerprint() functions

905

client["key_id"] = (section.get("key_id", "").upper()

906

.replace(" ", ""))

489

907

490

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

908

491

.replace(" ", ""))

909

492

if "secret" in section:

910

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

911

.encode("utf-8"),

912

"base64")

493

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

913

494

elif "secfile" in section:

914

495

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

915

496

(section["secfile"])),

930

511

client["last_approval_request"] = None

931

512

client["last_checked_ok"] = None

932

513

client["last_checker_status"] = -2

933

514

934

515

return settings

935

936

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

516

517

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

937

518

self.name = name

938

519

if server_settings is None:

939

520

server_settings = {}

941

522

# adding all client settings

942

523

for setting, value in settings.items():

943

524

setattr(self, setting, value)

944

525

945

526

if self.enabled:

946

527

if not hasattr(self, "last_enabled"):

947

528

self.last_enabled = datetime.datetime.utcnow()

951

532

else:

952

533

self.last_enabled = None

953

534

self.expires = None

954

535

955

536

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

956

logger.debug(" Key ID: %s", self.key_id)

537

# Uppercase and remove spaces from fingerprint for later

538

# comparison purposes with return value from the fingerprint()

539

# function

957

540

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

958

541

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

959

542

datetime.datetime.utcnow())

960

543

961

544

# attributes specific for this server instance

962

545

self.checker = None

963

546

self.checker_initiator_tag = None

966

549

self.current_checker_command = None

967

550

self.approved = None

968

551

self.approvals_pending = 0

969

self.changedstate = multiprocessing_manager.Condition(

970

multiprocessing_manager.Lock())

971

self.client_structure = [attr

972

for attr in self.__dict__.keys()

552

self.changedstate = (multiprocessing_manager

553

.Condition(multiprocessing_manager

554

.Lock()))

555

self.client_structure = [attr for attr in

556

self.__dict__.iterkeys()

973

557

if not attr.startswith("_")]

974

558

self.client_structure.append("client_structure")

975

976

for name, t in inspect.getmembers(

977

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

559

560

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

561

lambda obj:

562

isinstance(obj,

563

property)):

978

564

if not name.startswith("_"):

979

565

self.client_structure.append(name)

980

566

981

567

# Send notice to process children that client state has changed

982

568

def send_changedstate(self):

983

569

with self.changedstate:

984

570

self.changedstate.notify_all()

985

571

986

572

def enable(self):

987

573

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

988

574

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

993

579

self.last_enabled = datetime.datetime.utcnow()

994

580

self.init_checker()

995

581

self.send_changedstate()

996

582

997

583

def disable(self, quiet=True):

998

584

"""Disable this client."""

999

585

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

1001

587

if not quiet:

1002

588

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

1003

589

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

1004

GLib.source_remove(self.disable_initiator_tag)

590

gobject.source_remove(self.disable_initiator_tag)

1005

591

self.disable_initiator_tag = None

1006

592

self.expires = None

1007

593

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

1008

GLib.source_remove(self.checker_initiator_tag)

594

gobject.source_remove(self.checker_initiator_tag)

1009

595

self.checker_initiator_tag = None

1010

596

self.stop_checker()

1011

597

self.enabled = False

1012

598

if not quiet:

1013

599

self.send_changedstate()

1014

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

600

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

1015

601

return False

1016

602

1017

603

def __del__(self):

1018

604

self.disable()

1019

605

1020

606

def init_checker(self):

1021

607

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

1022

608

# and every interval from then on.

1023

609

if self.checker_initiator_tag is not None:

1024

GLib.source_remove(self.checker_initiator_tag)

1025

self.checker_initiator_tag = GLib.timeout_add(

1026

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

1027

self.start_checker)

610

gobject.source_remove(self.checker_initiator_tag)

611

self.checker_initiator_tag = (gobject.timeout_add

612

(int(self.interval

613

.total_seconds() * 1000),

614

self.start_checker))

1028

615

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

1029

616

if self.disable_initiator_tag is not None:

1030

GLib.source_remove(self.disable_initiator_tag)

1031

self.disable_initiator_tag = GLib.timeout_add(

1032

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

617

gobject.source_remove(self.disable_initiator_tag)

618

self.disable_initiator_tag = (gobject.timeout_add

619

(int(self.timeout

620

.total_seconds() * 1000),

621

self.disable))

1033

622

# Also start a new checker *right now*.

1034

623

self.start_checker()

1035

1036

def checker_callback(self, source, condition, connection,

1037

command):

624

625

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

1038

626

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

1039

627

self.checker_callback_tag = None

1040

628

self.checker = None

1041

# Read return code from connection (see call_pipe)

1042

returncode = connection.recv()

1043

connection.close()

1044

1045

if returncode >= 0:

1046

self.last_checker_status = returncode

1047

self.last_checker_signal = None

629

if os.WIFEXITED(condition):

630

self.last_checker_status = os.WEXITSTATUS(condition)

1048

631

if self.last_checker_status == 0:

1049

632

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

1050

633

vars(self))

1051

634

self.checked_ok()

1052

635

else:

1053

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

636

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

637

vars(self))

1054

638

else:

1055

639

self.last_checker_status = -1

1056

self.last_checker_signal = -returncode

1057

640

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

1058

641

vars(self))

1059

return False

1060

642

1061

643

def checked_ok(self):

1062

644

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

1063

645

self.last_checked_ok = datetime.datetime.utcnow()

1064

646

self.last_checker_status = 0

1065

self.last_checker_signal = None

1066

647

self.bump_timeout()

1067

648

1068

649

def bump_timeout(self, timeout=None):

1069

650

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

1070

651

if timeout is None:

1071

652

timeout = self.timeout

1072

653

if self.disable_initiator_tag is not None:

1073

GLib.source_remove(self.disable_initiator_tag)

654

gobject.source_remove(self.disable_initiator_tag)

1074

655

self.disable_initiator_tag = None

1075

656

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

1076

self.disable_initiator_tag = GLib.timeout_add(

1077

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

657

self.disable_initiator_tag = (gobject.timeout_add

658

(int(timeout.total_seconds()

659

* 1000), self.disable))

1078

660

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

1079

661

1080

662

def need_approval(self):

1081

663

self.last_approval_request = datetime.datetime.utcnow()

1082

664

1083

665

def start_checker(self):

1084

666

"""Start a new checker subprocess if one is not running.

1085

667

1086

668

If a checker already exists, leave it running and do

1087

669

nothing."""

1088

670

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

1093

675

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

1094

676

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

1095

677

# should be.

1096

1097

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

1098

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

1099

self.checker.join()

1100

self.checker = None

678

679

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

680

try:

681

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

682

except AttributeError:

683

pass

684

except OSError as error:

685

if error.errno != errno.ECHILD:

686

raise

687

else:

688

if pid:

689

logger.warning("Checker was a zombie")

690

gobject.source_remove(self.checker_callback_tag)

691

self.checker_callback(pid, status,

692

self.current_checker_command)

1101

693

# Start a new checker if needed

1102

694

if self.checker is None:

1103

695

# Escape attributes for the shell

1104

escaped_attrs = {

1105

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

1106

for attr in self.runtime_expansions}

696

escaped_attrs = { attr:

697

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

698

for attr in self.runtime_expansions }

1107

699

try:

1108

700

command = self.checker_command % escaped_attrs

1109

701

except TypeError as error:

1110

702

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

1111

self.checker_command,

703

self.checker_command, exc_info=error)

704

return True # Try again later

705

self.current_checker_command = command

706

try:

707

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

708

command, self.name)

709

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

710

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

711

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

712

# always replaced by /dev/null.)

713

# The exception is when not debugging but nevertheless

714

# running in the foreground; use the previously

715

# created wnull.

716

popen_args = {}

717

if (not self.server_settings["debug"]

718

and self.server_settings["foreground"]):

719

popen_args.update({"stdout": wnull,

720

"stderr": wnull })

721

self.checker = subprocess.Popen(command,

722

close_fds=True,

723

shell=True, cwd="/",

724

**popen_args)

725

except OSError as error:

726

logger.error("Failed to start subprocess",

1112

727

exc_info=error)

1113

return True # Try again later

1114

self.current_checker_command = command

1115

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

1116

self.name)

1117

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

1118

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

1119

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

1120

# always replaced by /dev/null.)

1121

# The exception is when not debugging but nevertheless

1122

# running in the foreground; use the previously

1123

# created wnull.

1124

popen_args = {"close_fds": True,

1125

"shell": True,

1126

"cwd": "/"}

1127

if (not self.server_settings["debug"]

1128

and self.server_settings["foreground"]):

1129

popen_args.update({"stdout": wnull,

1130

"stderr": wnull})

1131

pipe = multiprocessing.Pipe(duplex=False)

1132

self.checker = multiprocessing.Process(

1133

target=call_pipe,

1134

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

1135

kwargs=popen_args)

1136

self.checker.start()

1137

self.checker_callback_tag = GLib.io_add_watch(

1138

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

1139

self.checker_callback, pipe[0], command)

1140

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

728

return True

729

self.checker_callback_tag = (gobject.child_watch_add

730

(self.checker.pid,

731

self.checker_callback,

732

data=command))

733

# The checker may have completed before the gobject

734

# watch was added. Check for this.

735

try:

736

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

737

except OSError as error:

738

if error.errno == errno.ECHILD:

739

# This should never happen

740

logger.error("Child process vanished",

741

exc_info=error)

742

return True

743

raise

744

if pid:

745

gobject.source_remove(self.checker_callback_tag)

746

self.checker_callback(pid, status, command)

747

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

1141

748

return True

1142

749

1143

750

def stop_checker(self):

1144

751

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

1145

752

if self.checker_callback_tag:

1146

GLib.source_remove(self.checker_callback_tag)

753

gobject.source_remove(self.checker_callback_tag)

1147

754

self.checker_callback_tag = None

1148

755

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

1149

756

return

1150

757

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

1151

self.checker.terminate()

758

try:

759

self.checker.terminate()

760

#time.sleep(0.5)

761

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

762

# self.checker.kill()

763

except OSError as error:

764

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

765

raise

1152

766

self.checker = None

1153

767

1154

768

1155

def dbus_service_property(dbus_interface,

1156

signature="v",

1157

access="readwrite",

1158

byte_arrays=False):

769

def dbus_service_property(dbus_interface, signature="v",

770

access="readwrite", byte_arrays=False):

1159

771

"""Decorators for marking methods of a DBusObjectWithProperties to

1160

772

become properties on the D-Bus.

1161

773

1162

774

The decorated method will be called with no arguments by "Get"

1163

775

and with one argument by "Set".

1164

776

1165

777

The parameters, where they are supported, are the same as

1166

778

dbus.service.method, except there is only "signature", since the

1167

779

type from Get() and the type sent to Set() is the same.

1171

783

if byte_arrays and signature != "ay":

1172

784

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

1173

785

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

1174

1175

786

def decorator(func):

1176

787

func._dbus_is_property = True

1177

788

func._dbus_interface = dbus_interface

1180

791

func._dbus_name = func.__name__

1181

792

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

1182

793

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

1183

func._dbus_get_args_options = {'byte_arrays': byte_arrays}

794

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

1184

795

return func

1185

1186

796

return decorator

1187

797

1188

798

1189

799

def dbus_interface_annotations(dbus_interface):

1190

800

"""Decorator for marking functions returning interface annotations

1191

801

1192

802

Usage:

1193

803

1194

804

@dbus_interface_annotations("org.example.Interface")

1195

805

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

1196

806

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

1197

807

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

1198

808

"false"}

1199

809

"""

1200

1201

810

def decorator(func):

1202

811

func._dbus_is_interface = True

1203

812

func._dbus_interface = dbus_interface

1204

813

func._dbus_name = dbus_interface

1205

814

return func

1206

1207

815

return decorator

1208

816

1209

817

1210

818

def dbus_annotations(annotations):

1211

819

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

1212

820

Usage:

1213

821

1214

822

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

1215

823

"org.freedesktop.DBus.Property."

1216

824

"EmitsChangedSignal": "false"})

1218

826

access="r")

1219

827

def Property_dbus_property(self):

1220

828

return dbus.Boolean(False)

1221

1222

See also the DBusObjectWithAnnotations class.

1223

829

"""

1224

1225

830

def decorator(func):

1226

831

func._dbus_annotations = annotations

1227

832

return func

1228

1229

833

return decorator

1230

834

1231

835

1234

838

"""

1235

839

pass

1236

840

1237

1238

841

class DBusPropertyAccessException(DBusPropertyException):

1239

842

"""A property's access permissions disallows an operation.

1240

843

"""

1247

850

pass

1248

851

1249

852

1250

class DBusObjectWithAnnotations(dbus.service.Object):

1251

"""A D-Bus object with annotations.

1252

1253

Classes inheriting from this can use the dbus_annotations

1254

decorator to add annotations to methods or signals.

853

class DBusObjectWithProperties(dbus.service.Object):

854

"""A D-Bus object with properties.

855

856

Classes inheriting from this can use the dbus_service_property

857

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

858

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

1255

859

"""

1256

860

1257

861

@staticmethod

1258

862

def _is_dbus_thing(thing):

1259

863

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

1260

864

1261

865

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

1262

866

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

1263

867

"""

1264

868

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

1265

869

False)

1266

870

1267

871

def _get_all_dbus_things(self, thing):

1268

872

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

1269

873

"""

1270

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

874

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

875

name),

1271

876

athing.__get__(self))

1272

877

for cls in self.__class__.__mro__

1273

878

for name, athing in

1274

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

1275

1276

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1277

out_signature="s",

1278

path_keyword='object_path',

1279

connection_keyword='connection')

1280

def Introspect(self, object_path, connection):

1281

"""Overloading of standard D-Bus method.

1282

1283

Inserts annotation tags on methods and signals.

1284

"""

1285

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

1286

connection)

1287

try:

1288

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

1289

1290

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

1291

# Add annotation tags

1292

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

1293

for tag in if_tag.getElementsByTagName(typ):

1294

annots = dict()

1295

for name, prop in (self.

1296

_get_all_dbus_things(typ)):

1297

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

1298

and prop._dbus_interface

1299

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

1300

annots.update(getattr(

1301

prop, "_dbus_annotations", {}))

1302

for name, value in annots.items():

1303

ann_tag = document.createElement(

1304

"annotation")

1305

ann_tag.setAttribute("name", name)

1306

ann_tag.setAttribute("value", value)

1307

tag.appendChild(ann_tag)

1308

# Add interface annotation tags

1309

for annotation, value in dict(

1310

itertools.chain.from_iterable(

1311

annotations().items()

1312

for name, annotations

1313

in self._get_all_dbus_things("interface")

1314

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

1315

)).items():

1316

ann_tag = document.createElement("annotation")

1317

ann_tag.setAttribute("name", annotation)

1318

ann_tag.setAttribute("value", value)

1319

if_tag.appendChild(ann_tag)

1320

# Fix argument name for the Introspect method itself

1321

if (if_tag.getAttribute("name")

1322

== dbus.INTROSPECTABLE_IFACE):

1323

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

1324

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

1325

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

1326

if (arg.getAttribute("direction")

1327

== "out"):

1328

arg.setAttribute("name",

1329

"xml_data")

1330

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

1331

document.unlink()

1332

except (AttributeError, xml.dom.DOMException,

1333

xml.parsers.expat.ExpatError) as error:

1334

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

1335

exc_info=error)

1336

return xmlstring

1337

1338

1339

class DBusObjectWithProperties(DBusObjectWithAnnotations):

1340

"""A D-Bus object with properties.

1341

1342

Classes inheriting from this can use the dbus_service_property

1343

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

1344

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

1345

"""

1346

879

inspect.getmembers(cls,

880

self._is_dbus_thing(thing)))

881

1347

882

def _get_dbus_property(self, interface_name, property_name):

1348

883

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

1349

884

property with the specified name and interface.

1350

885

"""

1351

for cls in self.__class__.__mro__:

1352

for name, value in inspect.getmembers(

1353

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

886

for cls in self.__class__.__mro__:

887

for name, value in (inspect.getmembers

888

(cls,

889

self._is_dbus_thing("property"))):

1354

890

if (value._dbus_name == property_name

1355

891

and value._dbus_interface == interface_name):

1356

892

return value.__get__(self)

1357

893

1358

894

# No such property

1359

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

1360

self.dbus_object_path, interface_name, property_name))

1361

1362

@classmethod

1363

def _get_all_interface_names(cls):

1364

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

1365

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

1366

"_dbus_interface", None)

1367

for x in (inspect.getmro(cls))

1368

for attr in dir(x))

1369

if name is not None)

1370

1371

@dbus.service.method(dbus.PROPERTIES_IFACE,

1372

in_signature="ss",

895

raise DBusPropertyNotFound(self.dbus_object_path + ":"

896

+ interface_name + "."

897

+ property_name)

898

899

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

1373

900

out_signature="v")

1374

901

def Get(self, interface_name, property_name):

1375

902

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

1381

908

if not hasattr(value, "variant_level"):

1382

909

return value

1383

910

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

1384

911

1385

912

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

1386

913

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

1387

914

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

1399

926

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

1400

927

for byte in value))

1401

928

prop(value)

1402

1403

@dbus.service.method(dbus.PROPERTIES_IFACE,

1404

in_signature="s",

929

930

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

1405

931

out_signature="a{sv}")

1406

932

def GetAll(self, interface_name):

1407

933

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

1408

934

standard.

1409

935

1410

936

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

1411

937

"""

1412

938

properties = {}

1422

948

if not hasattr(value, "variant_level"):

1423

949

properties[name] = value

1424

950

continue

1425

properties[name] = type(value)(

1426

value, variant_level=value.variant_level + 1)

951

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

952

value.variant_level+1)

1427

953

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

1428

954

1429

955

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

1430

956

def PropertiesChanged(self, interface_name, changed_properties,

1431

957

invalidated_properties):

1433

959

standard.

1434

960

"""

1435

961

pass

1436

962

1437

963

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1438

964

out_signature="s",

1439

965

path_keyword='object_path',

1440

966

connection_keyword='connection')

1441

967

def Introspect(self, object_path, connection):

1442

968

"""Overloading of standard D-Bus method.

1443

969

1444

970

Inserts property tags and interface annotation tags.

1445

971

"""

1446

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1447

object_path,

1448

connection)

972

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

973

connection)

1449

974

try:

1450

975

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

1451

1452

976

def make_tag(document, name, prop):

1453

977

e = document.createElement("property")

1454

978

e.setAttribute("name", name)

1455

979

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

1456

980

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

1457

981

return e

1458

1459

982

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

1460

983

# Add property tags

1461

984

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

1464

987

if prop._dbus_interface

1465

988

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

1466

989

if_tag.appendChild(tag)

1467

# Add annotation tags for properties

1468

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

1469

annots = dict()

1470

for name, prop in self._get_all_dbus_things(

1471

"property"):

1472

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

1473

and prop._dbus_interface

1474

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

1475

annots.update(getattr(

1476

prop, "_dbus_annotations", {}))

1477

for name, value in annots.items():

1478

ann_tag = document.createElement(

1479

"annotation")

1480

ann_tag.setAttribute("name", name)

1481

ann_tag.setAttribute("value", value)

1482

tag.appendChild(ann_tag)

990

# Add annotation tags

991

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

992

for tag in if_tag.getElementsByTagName(typ):

993

annots = dict()

994

for name, prop in (self.

995

_get_all_dbus_things(typ)):

996

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

997

and prop._dbus_interface

998

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

999

annots.update(getattr

1000

(prop,

1001

"_dbus_annotations",

1002

{}))

1003

for name, value in annots.items():

1004

ann_tag = document.createElement(

1005

"annotation")

1006

ann_tag.setAttribute("name", name)

1007

ann_tag.setAttribute("value", value)

1008

tag.appendChild(ann_tag)

1009

# Add interface annotation tags

1010

for annotation, value in dict(

1011

itertools.chain.from_iterable(

1012

annotations().items()

1013

for name, annotations in

1014

self._get_all_dbus_things("interface")

1015

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

1016

)).items():

1017

ann_tag = document.createElement("annotation")

1018

ann_tag.setAttribute("name", annotation)

1019

ann_tag.setAttribute("value", value)

1020

if_tag.appendChild(ann_tag)

1483

1021

# Add the names to the return values for the

1484

1022

# "org.freedesktop.DBus.Properties" methods

1485

1023

if (if_tag.getAttribute("name")

1504

1042

return xmlstring

1505

1043

1506

1044

1507

try:

1508

dbus.OBJECT_MANAGER_IFACE

1509

except AttributeError:

1510

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

1511

1512

1513

class DBusObjectWithObjectManager(DBusObjectWithAnnotations):

1514

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

1515

1516

Classes inheriting from this exposes the standard

1517

GetManagedObjects call and the InterfacesAdded and

1518

InterfacesRemoved signals on the standard

1519

"org.freedesktop.DBus.ObjectManager" interface.

1520

1521

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

1522

manually.

1523

"""

1524

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

1525

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

1526

def GetManagedObjects(self):

1527

"""This function must be overridden"""

1528

raise NotImplementedError()

1529

1530

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,

1531

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

1532

def InterfacesAdded(self, object_path, interfaces_and_properties):

1533

pass

1534

1535

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

1536

def InterfacesRemoved(self, object_path, interfaces):

1537

pass

1538

1539

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1540

out_signature="s",

1541

path_keyword='object_path',

1542

connection_keyword='connection')

1543

def Introspect(self, object_path, connection):

1544

"""Overloading of standard D-Bus method.

1545

1546

Override return argument name of GetManagedObjects to be

1547

"objpath_interfaces_and_properties"

1548

"""

1549

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1550

object_path,

1551

connection)

1552

try:

1553

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

1554

1555

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

1556

# Fix argument name for the GetManagedObjects method

1557

if (if_tag.getAttribute("name")

1558

== dbus.OBJECT_MANAGER_IFACE):

1559

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

1560

if (cn.getAttribute("name")

1561

== "GetManagedObjects"):

1562

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

1563

if (arg.getAttribute("direction")

1564

== "out"):

1565

arg.setAttribute(

1566

"name",

1567

"objpath_interfaces"

1568

"_and_properties")

1569

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

1570

document.unlink()

1571

except (AttributeError, xml.dom.DOMException,

1572

xml.parsers.expat.ExpatError) as error:

1573

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

1574

exc_info=error)

1575

return xmlstring

1576

1577

1578

1045

def datetime_to_dbus(dt, variant_level=0):

1579

1046

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

1580

1047

if dt is None:

1581

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

1582

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

1048

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

1049

return dbus.String(dt.isoformat(),

1050

variant_level=variant_level)

1583

1051

1584

1052

1585

1053

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1587

1055

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

1588

1056

interface names according to the "alt_interface_names" mapping.

1589

1057

Usage:

1590

1058

1591

1059

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

1592

1060

"net.example.AlternateInterface"})

1593

1061

class SampleDBusObject(dbus.service.Object):

1594

1062

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

1595

1063

def SampleDBusMethod():

1596

1064

pass

1597

1065

1598

1066

The above "SampleDBusMethod" on "SampleDBusObject" will be

1599

1067

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

1600

1068

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

1601

1069

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

1602

1070

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

1603

1071

1604

1072

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

1605

1073

(from DBusObjectWithProperties) and interfaces (from the

1606

1074

dbus_interface_annotations decorator).

1607

1075

"""

1608

1609

1076

def wrapper(cls):

1610

1077

for orig_interface_name, alt_interface_name in (

1611

alt_interface_names.items()):

1078

alt_interface_names.items()):

1612

1079

attr = {}

1613

1080

interface_names = set()

1614

1081

# Go though all attributes of the class

1616

1083

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

1617

1084

# with the wrong interface name

1618

1085

if (not hasattr(attribute, "_dbus_interface")

1619

or not attribute._dbus_interface.startswith(

1620

orig_interface_name)):

1086

or not attribute._dbus_interface

1087

.startswith(orig_interface_name)):

1621

1088

continue

1622

1089

# Create an alternate D-Bus interface name based on

1623

1090

# the current name

1624

alt_interface = attribute._dbus_interface.replace(

1625

orig_interface_name, alt_interface_name)

1091

alt_interface = (attribute._dbus_interface

1092

.replace(orig_interface_name,

1093

alt_interface_name))

1626

1094

interface_names.add(alt_interface)

1627

1095

# Is this a D-Bus signal?

1628

1096

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

1629

1097

# Extract the original non-method undecorated

1630

1098

# function by black magic

1631

if sys.version_info.major == 2:

1632

nonmethod_func = (dict(

1099

nonmethod_func = (dict(

1633

1100

zip(attribute.func_code.co_freevars,

1634

attribute.__closure__))

1635

["func"].cell_contents)

1636

else:

1637

nonmethod_func = (dict(

1638

zip(attribute.__code__.co_freevars,

1639

attribute.__closure__))

1640

["func"].cell_contents)

1101

attribute.__closure__))["func"]

1102

.cell_contents)

1641

1103

# Create a new, but exactly alike, function

1642

1104

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

1643

1105

# with the alternate D-Bus interface name

1644

new_function = copy_function(nonmethod_func)

1645

new_function = (dbus.service.signal(

1646

alt_interface,

1647

attribute._dbus_signature)(new_function))

1106

new_function = (dbus.service.signal

1107

(alt_interface,

1108

attribute._dbus_signature)

1109

(types.FunctionType(

1110

nonmethod_func.func_code,

1111

nonmethod_func.func_globals,

1112

nonmethod_func.func_name,

1113

nonmethod_func.func_defaults,

1114

nonmethod_func.func_closure)))

1648

1115

# Copy annotations, if any

1649

1116

try:

1650

new_function._dbus_annotations = dict(

1651

attribute._dbus_annotations)

1117

new_function._dbus_annotations = (

1118

dict(attribute._dbus_annotations))

1652

1119

except AttributeError:

1653

1120

pass

1654

1655

1121

# Define a creator of a function to call both the

1656

1122

# original and alternate functions, so both the

1657

1123

# original and alternate signals gets sent when

1660

1126

"""This function is a scope container to pass

1661

1127

func1 and func2 to the "call_both" function

1662

1128

outside of its arguments"""

1663

1664

@functools.wraps(func2)

1665

1129

def call_both(*args, **kwargs):

1666

1130

"""This function will emit two D-Bus

1667

1131

signals by calling func1 and func2"""

1668

1132

func1(*args, **kwargs)

1669

1133

func2(*args, **kwargs)

1670

# Make wrapper function look like a D-Bus

1671

# signal

1672

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

1673

if name.startswith("_dbus_"):

1674

setattr(call_both, name, attr)

1675

1676

1134

return call_both

1677

1135

# Create the "call_both" function and add it to

1678

1136

# the class

1683

1141

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

1684

1142

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

1685

1143

# to the class.

1686

attr[attrname] = (

1687

dbus.service.method(

1688

alt_interface,

1689

attribute._dbus_in_signature,

1690

attribute._dbus_out_signature)

1691

(copy_function(attribute)))

1144

attr[attrname] = (dbus.service.method

1145

(alt_interface,

1146

attribute._dbus_in_signature,

1147

attribute._dbus_out_signature)

1148

(types.FunctionType

1149

(attribute.func_code,

1150

attribute.func_globals,

1151

attribute.func_name,

1152

attribute.func_defaults,

1153

attribute.func_closure)))

1692

1154

# Copy annotations, if any

1693

1155

try:

1694

attr[attrname]._dbus_annotations = dict(

1695

attribute._dbus_annotations)

1156

attr[attrname]._dbus_annotations = (

1157

dict(attribute._dbus_annotations))

1696

1158

except AttributeError:

1697

1159

pass

1698

1160

# Is this a D-Bus property?

1701

1163

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

1702

1164

# property with the alternate D-Bus interface

1703

1165

# name. Add it to the class.

1704

attr[attrname] = (dbus_service_property(

1705

alt_interface, attribute._dbus_signature,

1706

attribute._dbus_access,

1707

attribute._dbus_get_args_options

1708

["byte_arrays"])

1709

(copy_function(attribute)))

1166

attr[attrname] = (dbus_service_property

1167

(alt_interface,

1168

attribute._dbus_signature,

1169

attribute._dbus_access,

1170

attribute

1171

._dbus_get_args_options

1172

["byte_arrays"])

1173

(types.FunctionType

1174

(attribute.func_code,

1175

attribute.func_globals,

1176

attribute.func_name,

1177

attribute.func_defaults,

1178

attribute.func_closure)))

1710

1179

# Copy annotations, if any

1711

1180

try:

1712

attr[attrname]._dbus_annotations = dict(

1713

attribute._dbus_annotations)

1181

attr[attrname]._dbus_annotations = (

1182

dict(attribute._dbus_annotations))

1714

1183

except AttributeError:

1715

1184

pass

1716

1185

# Is this a D-Bus interface?

1719

1188

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

1720

1189

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

1721

1190

# to the class.

1722

attr[attrname] = (

1723

dbus_interface_annotations(alt_interface)

1724

(copy_function(attribute)))

1191

attr[attrname] = (dbus_interface_annotations

1192

(alt_interface)

1193

(types.FunctionType

1194

(attribute.func_code,

1195

attribute.func_globals,

1196

attribute.func_name,

1197

attribute.func_defaults,

1198

attribute.func_closure)))

1725

1199

if deprecate:

1726

1200

# Deprecate all alternate interfaces

1727

iname = "_AlternateDBusNames_interface_annotation{}"

1201

iname="_AlternateDBusNames_interface_annotation{}"

1728

1202

for interface_name in interface_names:

1729

1730

1203

@dbus_interface_annotations(interface_name)

1731

1204

def func(self):

1732

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

1733

"true"}

1205

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

1206

"true" }

1734

1207

# Find an unused name

1735

1208

for aname in (iname.format(i)

1736

1209

for i in itertools.count()):

1740

1213

if interface_names:

1741

1214

# Replace the class with a new subclass of it with

1742

1215

# methods, signals, etc. as created above.

1743

if sys.version_info.major == 2:

1744

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

1745

(cls, ), attr)

1746

else:

1747

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

1748

(cls, ), attr)

1216

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

1217

(cls,), attr)

1749

1218

return cls

1750

1751

1219

return wrapper

1752

1220

1753

1221

1754

1222

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

1755

"se.bsnet.fukt.Mandos"})

1223

"se.bsnet.fukt.Mandos"})

1756

1224

class ClientDBus(Client, DBusObjectWithProperties):

1757

1225

"""A Client class using D-Bus

1758

1226

1759

1227

Attributes:

1760

1228

dbus_object_path: dbus.ObjectPath

1761

1229

bus: dbus.SystemBus()

1762

1230

"""

1763

1231

1764

1232

runtime_expansions = (Client.runtime_expansions

1765

+ ("dbus_object_path", ))

1766

1233

+ ("dbus_object_path",))

1234

1767

1235

_interface = "se.recompile.Mandos.Client"

1768

1236

1769

1237

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

1770

1771

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

1238

1239

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

1772

1240

self.bus = bus

1773

1241

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

1774

1242

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

1776

1244

client_object_name = str(self.name).translate(

1777

1245

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

1778

1246

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

1779

self.dbus_object_path = dbus.ObjectPath(

1780

"/clients/" + client_object_name)

1247

self.dbus_object_path = (dbus.ObjectPath

1248

("/clients/" + client_object_name))

1781

1249

DBusObjectWithProperties.__init__(self, self.bus,

1782

1250

self.dbus_object_path)

1783

1784

def notifychangeproperty(transform_func, dbus_name,

1785

type_func=lambda x: x,

1786

variant_level=1,

1787

invalidate_only=False,

1251

1252

def notifychangeproperty(transform_func,

1253

dbus_name, type_func=lambda x: x,

1254

variant_level=1, invalidate_only=False,

1788

1255

_interface=_interface):

1789

1256

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

1790

1257

its changes to DBus.

1791

1258

1792

1259

transform_fun: Function that takes a value and a variant_level

1793

1260

and transforms it to a D-Bus type.

1794

1261

dbus_name: D-Bus name of the variable

1797

1264

variant_level: D-Bus variant level. Default: 1

1798

1265

"""

1799

1266

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

1800

1801

1267

def setter(self, value):

1802

1268

if hasattr(self, "dbus_object_path"):

1803

1269

if (not hasattr(self, attrname) or

1804

1270

type_func(getattr(self, attrname, None))

1805

1271

!= type_func(value)):

1806

1272

if invalidate_only:

1807

self.PropertiesChanged(

1808

_interface, dbus.Dictionary(),

1809

dbus.Array((dbus_name, )))

1273

self.PropertiesChanged(_interface,

1274

dbus.Dictionary(),

1275

dbus.Array

1276

((dbus_name,)))

1810

1277

else:

1811

dbus_value = transform_func(

1812

type_func(value),

1813

variant_level=variant_level)

1278

dbus_value = transform_func(type_func(value),

1279

variant_level

1280

=variant_level)

1814

1281

self.PropertyChanged(dbus.String(dbus_name),

1815

1282

dbus_value)

1816

self.PropertiesChanged(

1817

_interface,

1818

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

1819

dbus_value}),

1820

dbus.Array())

1283

self.PropertiesChanged(_interface,

1284

dbus.Dictionary({

1285

dbus.String(dbus_name):

1286

dbus_value }), dbus.Array())

1821

1287

setattr(self, attrname, value)

1822

1288

1823

1289

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

1824

1290

1825

1291

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1826

1292

approvals_pending = notifychangeproperty(dbus.Boolean,

1827

1293

"ApprovalPending",

1828

type_func=bool)

1294

type_func = bool)

1829

1295

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

1830

1296

last_enabled = notifychangeproperty(datetime_to_dbus,

1831

1297

"LastEnabled")

1832

checker = notifychangeproperty(

1833

dbus.Boolean, "CheckerRunning",

1834

type_func=lambda checker: checker is not None)

1298

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

1299

type_func = lambda checker:

1300

checker is not None)

1835

1301

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1836

1302

"LastCheckedOK")

1837

1303

last_checker_status = notifychangeproperty(dbus.Int16,

1840

1306

datetime_to_dbus, "LastApprovalRequest")

1841

1307

approved_by_default = notifychangeproperty(dbus.Boolean,

1842

1308

"ApprovedByDefault")

1843

approval_delay = notifychangeproperty(

1844

dbus.UInt64, "ApprovalDelay",

1845

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

1309

approval_delay = notifychangeproperty(dbus.UInt64,

1310

"ApprovalDelay",

1311

type_func =

1312

lambda td: td.total_seconds()

1313

* 1000)

1846

1314

approval_duration = notifychangeproperty(

1847

1315

dbus.UInt64, "ApprovalDuration",

1848

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

1316

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

1849

1317

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

1850

timeout = notifychangeproperty(

1851

dbus.UInt64, "Timeout",

1852

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

1318

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

1319

type_func = lambda td:

1320

td.total_seconds() * 1000)

1853

1321

extended_timeout = notifychangeproperty(

1854

1322

dbus.UInt64, "ExtendedTimeout",

1855

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

1856

interval = notifychangeproperty(

1857

dbus.UInt64, "Interval",

1858

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

1323

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

1324

interval = notifychangeproperty(dbus.UInt64,

1325

"Interval",

1326

type_func =

1327

lambda td: td.total_seconds()

1328

* 1000)

1859

1329

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

1860

1330

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

1861

1331

invalidate_only=True)

1862

1332

1863

1333

del notifychangeproperty

1864

1334

1865

1335

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

1866

1336

try:

1867

1337

self.remove_from_connection()

1870

1340

if hasattr(DBusObjectWithProperties, "__del__"):

1871

1341

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

1872

1342

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

1873

1874

def checker_callback(self, source, condition,

1875

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

1876

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

1877

connection, command, *args,

1878

**kwargs)

1879

exitstatus = self.last_checker_status

1880

if exitstatus >= 0:

1343

1344

def checker_callback(self, pid, condition, command,

1345

*args, **kwargs):

1346

self.checker_callback_tag = None

1347

self.checker = None

1348

if os.WIFEXITED(condition):

1349

exitstatus = os.WEXITSTATUS(condition)

1881

1350

# Emit D-Bus signal

1882

1351

self.CheckerCompleted(dbus.Int16(exitstatus),

1883

# This is specific to GNU libC

1884

dbus.Int64(exitstatus << 8),

1352

dbus.Int64(condition),

1885

1353

dbus.String(command))

1886

1354

else:

1887

1355

# Emit D-Bus signal

1888

1356

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

1889

dbus.Int64(

1890

# This is specific to GNU libC

1891

(exitstatus << 8)

1892

| self.last_checker_signal),

1357

dbus.Int64(condition),

1893

1358

dbus.String(command))

1894

return ret

1895

1359

1360

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

1361

*args, **kwargs)

1362

1896

1363

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

1897

1364

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

1898

1365

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

1902

1369

# Emit D-Bus signal

1903

1370

self.CheckerStarted(self.current_checker_command)

1904

1371

return r

1905

1372

1906

1373

def _reset_approved(self):

1907

1374

self.approved = None

1908

1375

return False

1909

1376

1910

1377

def approve(self, value=True):

1911

1378

self.approved = value

1912

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

1913

* 1000), self._reset_approved)

1379

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

1380

* 1000), self._reset_approved)

1914

1381

self.send_changedstate()

1915

1916

# D-Bus methods, signals & properties

1917

1918

# Interfaces

1919

1920

# Signals

1921

1382

1383

## D-Bus methods, signals & properties

1384

1385

## Interfaces

1386

1387

## Signals

1388

1922

1389

# CheckerCompleted - signal

1923

1390

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

1924

1391

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

1925

1392

"D-Bus signal"

1926

1393

pass

1927

1394

1928

1395

# CheckerStarted - signal

1929

1396

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

1930

1397

def CheckerStarted(self, command):

1931

1398

"D-Bus signal"

1932

1399

pass

1933

1400

1934

1401

# PropertyChanged - signal

1935

1402

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

1936

1403

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

1937

1404

def PropertyChanged(self, property, value):

1938

1405

"D-Bus signal"

1939

1406

pass

1940

1407

1941

1408

# GotSecret - signal

1942

1409

@dbus.service.signal(_interface)

1943

1410

def GotSecret(self):

1946

1413

server to mandos-client

1947

1414

"""

1948

1415

pass

1949

1416

1950

1417

# Rejected - signal

1951

1418

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

1952

1419

def Rejected(self, reason):

1953

1420

"D-Bus signal"

1954

1421

pass

1955

1422

1956

1423

# NeedApproval - signal

1957

1424

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

1958

1425

def NeedApproval(self, timeout, default):

1959

1426

"D-Bus signal"

1960

1427

return self.need_approval()

1961

1962

# Methods

1963

1428

1429

## Methods

1430

1964

1431

# Approve - method

1965

1432

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

1966

1433

def Approve(self, value):

1967

1434

self.approve(value)

1968

1435

1969

1436

# CheckedOK - method

1970

1437

@dbus.service.method(_interface)

1971

1438

def CheckedOK(self):

1972

1439

self.checked_ok()

1973

1440

1974

1441

# Enable - method

1975

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

1976

1442

@dbus.service.method(_interface)

1977

1443

def Enable(self):

1978

1444

"D-Bus method"

1979

1445

self.enable()

1980

1446

1981

1447

# StartChecker - method

1982

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

1983

1448

@dbus.service.method(_interface)

1984

1449

def StartChecker(self):

1985

1450

"D-Bus method"

1986

1451

self.start_checker()

1987

1452

1988

1453

# Disable - method

1989

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

1990

1454

@dbus.service.method(_interface)

1991

1455

def Disable(self):

1992

1456

"D-Bus method"

1993

1457

self.disable()

1994

1458

1995

1459

# StopChecker - method

1996

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

1997

1460

@dbus.service.method(_interface)

1998

1461

def StopChecker(self):

1999

1462

self.stop_checker()

2000

2001

# Properties

2002

1463

1464

## Properties

1465

2003

1466

# ApprovalPending - property

2004

1467

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

2005

1468

def ApprovalPending_dbus_property(self):

2006

1469

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

2007

1470

2008

1471

# ApprovedByDefault - property

2009

@dbus_service_property(_interface,

2010

signature="b",

1472

@dbus_service_property(_interface, signature="b",

2011

1473

access="readwrite")

2012

1474

def ApprovedByDefault_dbus_property(self, value=None):

2013

1475

if value is None: # get

2014

1476

return dbus.Boolean(self.approved_by_default)

2015

1477

self.approved_by_default = bool(value)

2016

1478

2017

1479

# ApprovalDelay - property

2018

@dbus_service_property(_interface,

2019

signature="t",

1480

@dbus_service_property(_interface, signature="t",

2020

1481

access="readwrite")

2021

1482

def ApprovalDelay_dbus_property(self, value=None):

2022

1483

if value is None: # get

2023

1484

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

2024

1485

* 1000)

2025

1486

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

2026

1487

2027

1488

# ApprovalDuration - property

2028

@dbus_service_property(_interface,

2029

signature="t",

1489

@dbus_service_property(_interface, signature="t",

2030

1490

access="readwrite")

2031

1491

def ApprovalDuration_dbus_property(self, value=None):

2032

1492

if value is None: # get

2033

1493

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

2034

1494

* 1000)

2035

1495

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

2036

1496

2037

1497

# Name - property

2038

@dbus_annotations(

2039

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

2040

1498

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

2041

1499

def Name_dbus_property(self):

2042

1500

return dbus.String(self.name)

2043

2044

# KeyID - property

2045

@dbus_annotations(

2046

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

2047

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

2048

def KeyID_dbus_property(self):

2049

return dbus.String(self.key_id)

2050

1501

2051

1502

# Fingerprint - property

2052

@dbus_annotations(

2053

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

2054

1503

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

2055

1504

def Fingerprint_dbus_property(self):

2056

1505

return dbus.String(self.fingerprint)

2057

1506

2058

1507

# Host - property

2059

@dbus_service_property(_interface,

2060

signature="s",

1508

@dbus_service_property(_interface, signature="s",

2061

1509

access="readwrite")

2062

1510

def Host_dbus_property(self, value=None):

2063

1511

if value is None: # get

2064

1512

return dbus.String(self.host)

2065

1513

self.host = str(value)

2066

1514

2067

1515

# Created - property

2068

@dbus_annotations(

2069

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

2070

1516

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

2071

1517

def Created_dbus_property(self):

2072

1518

return datetime_to_dbus(self.created)

2073

1519

2074

1520

# LastEnabled - property

2075

1521

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

2076

1522

def LastEnabled_dbus_property(self):

2077

1523

return datetime_to_dbus(self.last_enabled)

2078

1524

2079

1525

# Enabled - property

2080

@dbus_service_property(_interface,

2081

signature="b",

1526

@dbus_service_property(_interface, signature="b",

2082

1527

access="readwrite")

2083

1528

def Enabled_dbus_property(self, value=None):

2084

1529

if value is None: # get

2087

1532

self.enable()

2088

1533

else:

2089

1534

self.disable()

2090

1535

2091

1536

# LastCheckedOK - property

2092

@dbus_service_property(_interface,

2093

signature="s",

1537

@dbus_service_property(_interface, signature="s",

2094

1538

access="readwrite")

2095

1539

def LastCheckedOK_dbus_property(self, value=None):

2096

1540

if value is not None:

2097

1541

self.checked_ok()

2098

1542

return

2099

1543

return datetime_to_dbus(self.last_checked_ok)

2100

1544

2101

1545

# LastCheckerStatus - property

2102

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

1546

@dbus_service_property(_interface, signature="n",

1547

access="read")

2103

1548

def LastCheckerStatus_dbus_property(self):

2104

1549

return dbus.Int16(self.last_checker_status)

2105

1550

2106

1551

# Expires - property

2107

1552

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

2108

1553

def Expires_dbus_property(self):

2109

1554

return datetime_to_dbus(self.expires)

2110

1555

2111

1556

# LastApprovalRequest - property

2112

1557

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

2113

1558

def LastApprovalRequest_dbus_property(self):

2114

1559

return datetime_to_dbus(self.last_approval_request)

2115

1560

2116

1561

# Timeout - property

2117

@dbus_service_property(_interface,

2118

signature="t",

1562

@dbus_service_property(_interface, signature="t",

2119

1563

access="readwrite")

2120

1564

def Timeout_dbus_property(self, value=None):

2121

1565

if value is None: # get

2133

1577

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

2134

1578

is None):

2135

1579

return

2136

GLib.source_remove(self.disable_initiator_tag)

2137

self.disable_initiator_tag = GLib.timeout_add(

2138

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

2139

self.disable)

2140

1580

gobject.source_remove(self.disable_initiator_tag)

1581

self.disable_initiator_tag = (

1582

gobject.timeout_add(

1583

int((self.expires - now).total_seconds()

1584

* 1000), self.disable))

1585

2141

1586

# ExtendedTimeout - property

2142

@dbus_service_property(_interface,

2143

signature="t",

1587

@dbus_service_property(_interface, signature="t",

2144

1588

access="readwrite")

2145

1589

def ExtendedTimeout_dbus_property(self, value=None):

2146

1590

if value is None: # get

2147

1591

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

2148

1592

* 1000)

2149

1593

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

2150

1594

2151

1595

# Interval - property

2152

@dbus_service_property(_interface,

2153

signature="t",

1596

@dbus_service_property(_interface, signature="t",

2154

1597

access="readwrite")

2155

1598

def Interval_dbus_property(self, value=None):

2156

1599

if value is None: # get

2160

1603

return

2161

1604

if self.enabled:

2162

1605

# Reschedule checker run

2163

GLib.source_remove(self.checker_initiator_tag)

2164

self.checker_initiator_tag = GLib.timeout_add(

2165

value, self.start_checker)

2166

self.start_checker() # Start one now, too

2167

1606

gobject.source_remove(self.checker_initiator_tag)

1607

self.checker_initiator_tag = (gobject.timeout_add

1608

(value, self.start_checker))

1609

self.start_checker() # Start one now, too

1610

2168

1611

# Checker - property

2169

@dbus_service_property(_interface,

2170

signature="s",

1612

@dbus_service_property(_interface, signature="s",

2171

1613

access="readwrite")

2172

1614

def Checker_dbus_property(self, value=None):

2173

1615

if value is None: # get

2174

1616

return dbus.String(self.checker_command)

2175

1617

self.checker_command = str(value)

2176

1618

2177

1619

# CheckerRunning - property

2178

@dbus_service_property(_interface,

2179

signature="b",

1620

@dbus_service_property(_interface, signature="b",

2180

1621

access="readwrite")

2181

1622

def CheckerRunning_dbus_property(self, value=None):

2182

1623

if value is None: # get

2185

1626

self.start_checker()

2186

1627

else:

2187

1628

self.stop_checker()

2188

1629

2189

1630

# ObjectPath - property

2190

@dbus_annotations(

2191

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

2192

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

2193

1631

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

2194

1632

def ObjectPath_dbus_property(self):

2195

return self.dbus_object_path # is already a dbus.ObjectPath

2196

1633

return self.dbus_object_path # is already a dbus.ObjectPath

1634

2197

1635

# Secret = property

2198

@dbus_annotations(

2199

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

2200

"invalidates"})

2201

@dbus_service_property(_interface,

2202

signature="ay",

2203

access="write",

2204

byte_arrays=True)

1636

@dbus_service_property(_interface, signature="ay",

1637

access="write", byte_arrays=True)

2205

1638

def Secret_dbus_property(self, value):

2206

1639

self.secret = bytes(value)

2207

1640

2208

1641

del _interface

2209

1642

2210

1643

2211

1644

class ProxyClient(object):

2212

def __init__(self, child_pipe, key_id, fpr, address):

1645

def __init__(self, child_pipe, fpr, address):

2213

1646

self._pipe = child_pipe

2214

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

1647

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

2215

1648

if not self._pipe.recv():

2216

raise KeyError(key_id or fpr)

2217

1649

raise KeyError()

1650

2218

1651

def __getattribute__(self, name):

2219

1652

if name == '_pipe':

2220

1653

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

2223

1656

if data[0] == 'data':

2224

1657

return data[1]

2225

1658

if data[0] == 'function':

2226

2227

1659

def func(*args, **kwargs):

2228

1660

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

2229

1661

return self._pipe.recv()[1]

2230

2231

1662

return func

2232

1663

2233

1664

def __setattr__(self, name, value):

2234

1665

if name == '_pipe':

2235

1666

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

2238

1669

2239

1670

class ClientHandler(socketserver.BaseRequestHandler, object):

2240

1671

"""A class to handle client connections.

2241

1672

2242

1673

Instantiated once for each connection to handle it.

2243

1674

Note: This will run in its own forked process."""

2244

1675

2245

1676

def handle(self):

2246

1677

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

2247

1678

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

2248

1679

str(self.client_address))

2249

1680

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

2250

1681

self.server.child_pipe.fileno())

2251

2252

session = gnutls.ClientSession(self.request)

2253

2254

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

2255

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

2256

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

2257

# "+DHE-DSS"))

1682

1683

session = (gnutls.connection

1684

.ClientSession(self.request,

1685

gnutls.connection

1686

.X509Credentials()))

1687

1688

# Note: gnutls.connection.X509Credentials is really a

1689

# generic GnuTLS certificate credentials object so long as

1690

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

1691

# here despite using OpenPGP certificates.

1692

1693

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

1694

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

1695

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

1696

# "+DHE-DSS"))

2258

1697

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

2259

1698

priority = self.server.gnutls_priority

2260

1699

if priority is None:

2261

1700

priority = "NORMAL"

2262

gnutls.priority_set_direct(session._c_object,

2263

priority.encode("utf-8"),

2264

None)

2265

1701

(gnutls.library.functions

1702

.gnutls_priority_set_direct(session._c_object,

1703

priority, None))

1704

2266

1705

# Start communication using the Mandos protocol

2267

1706

# Get protocol number

2268

1707

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

2273

1712

except (ValueError, IndexError, RuntimeError) as error:

2274

1713

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

2275

1714

return

2276

1715

2277

1716

# Start GnuTLS connection

2278

1717

try:

2279

1718

session.handshake()

2280

except gnutls.Error as error:

1719

except gnutls.errors.GNUTLSError as error:

2281

1720

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

2282

1721

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

2283

1722

# established. Just abandon the request.

2284

1723

return

2285

1724

logger.debug("Handshake succeeded")

2286

1725

2287

1726

approval_required = False

2288

1727

try:

2289

if gnutls.has_rawpk:

2290

fpr = ""

2291

try:

2292

key_id = self.key_id(

2293

self.peer_certificate(session))

2294

except (TypeError, gnutls.Error) as error:

2295

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

2296

return

2297

logger.debug("Key ID: %s", key_id)

2298

2299

else:

2300

key_id = ""

2301

try:

2302

fpr = self.fingerprint(

2303

self.peer_certificate(session))

2304

except (TypeError, gnutls.Error) as error:

2305

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

2306

return

2307

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

2308

2309

try:

2310

client = ProxyClient(child_pipe, key_id, fpr,

1728

try:

1729

fpr = self.fingerprint(self.peer_certificate

1730

(session))

1731

except (TypeError,

1732

gnutls.errors.GNUTLSError) as error:

1733

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

1734

return

1735

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

1736

1737

try:

1738

client = ProxyClient(child_pipe, fpr,

2311

1739

self.client_address)

2312

1740

except KeyError:

2313

1741

return

2314

1742

2315

1743

if client.approval_delay:

2316

1744

delay = client.approval_delay

2317

1745

client.approvals_pending += 1

2318

1746

approval_required = True

2319

1747

2320

1748

while True:

2321

1749

if not client.enabled:

2322

1750

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

2323

client.name)

1751

client.name)

2324

1752

if self.server.use_dbus:

2325

1753

# Emit D-Bus signal

2326

1754

client.Rejected("Disabled")

2327

1755

return

2328

1756

2329

1757

if client.approved or not client.approval_delay:

2330

# We are approved or approval is disabled

1758

#We are approved or approval is disabled

2331

1759

break

2332

1760

elif client.approved is None:

2333

1761

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

2344

1772

# Emit D-Bus signal

2345

1773

client.Rejected("Denied")

2346

1774

return

2347

2348

# wait until timeout or approved

1775

1776

#wait until timeout or approved

2349

1777

time = datetime.datetime.now()

2350

1778

client.changedstate.acquire()

2351

1779

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

2364

1792

break

2365

1793

else:

2366

1794

delay -= time2 - time

2367

2368

try:

2369

session.send(client.secret)

2370

except gnutls.Error as error:

2371

logger.warning("gnutls send failed",

2372

exc_info=error)

2373

return

2374

1795

1796

sent_size = 0

1797

while sent_size < len(client.secret):

1798

try:

1799

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

1800

except gnutls.errors.GNUTLSError as error:

1801

logger.warning("gnutls send failed",

1802

exc_info=error)

1803

return

1804

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

1805

sent, len(client.secret)

1806

- (sent_size + sent))

1807

sent_size += sent

1808

2375

1809

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

2376

1810

# bump the timeout using extended_timeout

2377

1811

client.bump_timeout(client.extended_timeout)

2378

1812

if self.server.use_dbus:

2379

1813

# Emit D-Bus signal

2380

1814

client.GotSecret()

2381

1815

2382

1816

finally:

2383

1817

if approval_required:

2384

1818

client.approvals_pending -= 1

2385

1819

try:

2386

1820

session.bye()

2387

except gnutls.Error as error:

1821

except gnutls.errors.GNUTLSError as error:

2388

1822

logger.warning("GnuTLS bye failed",

2389

1823

exc_info=error)

2390

1824

2391

1825

@staticmethod

2392

1826

def peer_certificate(session):

2393

"Return the peer's certificate as a bytestring"

2394

try:

2395

cert_type = gnutls.certificate_type_get2(session._c_object,

2396

gnutls.CTYPE_PEERS)

2397

except AttributeError:

2398

cert_type = gnutls.certificate_type_get(session._c_object)

2399

if gnutls.has_rawpk:

2400

valid_cert_types = frozenset((gnutls.CRT_RAWPK,))

2401

else:

2402

valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))

2403

# If not a valid certificate type...

2404

if cert_type not in valid_cert_types:

2405

logger.info("Cert type %r not in %r", cert_type,

2406

valid_cert_types)

2407

# ...return invalid data

2408

return b""

1827

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

1828

# If not an OpenPGP certificate...

1829

if (gnutls.library.functions

1830

.gnutls_certificate_type_get(session._c_object)

1831

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1832

# ...do the normal thing

1833

return session.peer_certificate

2409

1834

list_size = ctypes.c_uint(1)

2410

cert_list = (gnutls.certificate_get_peers

1835

cert_list = (gnutls.library.functions

1836

.gnutls_certificate_get_peers

2411

1837

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

2412

1838

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

2413

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

1839

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

1840

" certificate")

2414

1841

if list_size.value == 0:

2415

1842

return None

2416

1843

cert = cert_list[0]

2417

1844

return ctypes.string_at(cert.data, cert.size)

2418

2419

@staticmethod

2420

def key_id(certificate):

2421

"Convert a certificate bytestring to a hexdigit key ID"

2422

# New GnuTLS "datum" with the public key

2423

datum = gnutls.datum_t(

2424

ctypes.cast(ctypes.c_char_p(certificate),

2425

ctypes.POINTER(ctypes.c_ubyte)),

2426

ctypes.c_uint(len(certificate)))

2427

# XXX all these need to be created in the gnutls "module"

2428

# New empty GnuTLS certificate

2429

pubkey = gnutls.pubkey_t()

2430

gnutls.pubkey_init(ctypes.byref(pubkey))

2431

# Import the raw public key into the certificate

2432

gnutls.pubkey_import(pubkey,

2433

ctypes.byref(datum),

2434

gnutls.X509_FMT_DER)

2435

# New buffer for the key ID

2436

buf = ctypes.create_string_buffer(32)

2437

buf_len = ctypes.c_size_t(len(buf))

2438

# Get the key ID from the raw public key into the buffer

2439

gnutls.pubkey_get_key_id(pubkey,

2440

gnutls.KEYID_USE_SHA256,

2441

ctypes.cast(ctypes.byref(buf),

2442

ctypes.POINTER(ctypes.c_ubyte)),

2443

ctypes.byref(buf_len))

2444

# Deinit the certificate

2445

gnutls.pubkey_deinit(pubkey)

2446

2447

# Convert the buffer to a Python bytestring

2448

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

2449

# Convert the bytestring to hexadecimal notation

2450

hex_key_id = binascii.hexlify(key_id).upper()

2451

return hex_key_id

2452

1845

2453

1846

@staticmethod

2454

1847

def fingerprint(openpgp):

2455

1848

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

2456

1849

# New GnuTLS "datum" with the OpenPGP public key

2457

datum = gnutls.datum_t(

2458

ctypes.cast(ctypes.c_char_p(openpgp),

2459

ctypes.POINTER(ctypes.c_ubyte)),

2460

ctypes.c_uint(len(openpgp)))

1850

datum = (gnutls.library.types

1851

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

1852

ctypes.POINTER

1853

(ctypes.c_ubyte)),

1854

ctypes.c_uint(len(openpgp))))

2461

1855

# New empty GnuTLS certificate

2462

crt = gnutls.openpgp_crt_t()

2463

gnutls.openpgp_crt_init(ctypes.byref(crt))

1856

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1857

(gnutls.library.functions

1858

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

2464

1859

# Import the OpenPGP public key into the certificate

2465

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

2466

gnutls.OPENPGP_FMT_RAW)

1860

(gnutls.library.functions

1861

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

1862

gnutls.library.constants

1863

.GNUTLS_OPENPGP_FMT_RAW))

2467

1864

# Verify the self signature in the key

2468

1865

crtverify = ctypes.c_uint()

2469

gnutls.openpgp_crt_verify_self(crt, 0,

2470

ctypes.byref(crtverify))

1866

(gnutls.library.functions

1867

.gnutls_openpgp_crt_verify_self(crt, 0,

1868

ctypes.byref(crtverify)))

2471

1869

if crtverify.value != 0:

2472

gnutls.openpgp_crt_deinit(crt)

2473

raise gnutls.CertificateSecurityError(code

2474

=crtverify.value)

1870

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1871

raise (gnutls.errors.CertificateSecurityError

1872

("Verify failed"))

2475

1873

# New buffer for the fingerprint

2476

1874

buf = ctypes.create_string_buffer(20)

2477

1875

buf_len = ctypes.c_size_t()

2478

1876

# Get the fingerprint from the certificate into the buffer

2479

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

2480

ctypes.byref(buf_len))

1877

(gnutls.library.functions

1878

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

1879

ctypes.byref(buf_len)))

2481

1880

# Deinit the certificate

2482

gnutls.openpgp_crt_deinit(crt)

1881

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

2483

1882

# Convert the buffer to a Python bytestring

2484

1883

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

2485

1884

# Convert the bytestring to hexadecimal notation

2489

1888

2490

1889

class MultiprocessingMixIn(object):

2491

1890

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

2492

2493

1891

def sub_process_main(self, request, address):

2494

1892

try:

2495

1893

self.finish_request(request, address)

2496

1894

except Exception:

2497

1895

self.handle_error(request, address)

2498

1896

self.close_request(request)

2499

1897

2500

1898

def process_request(self, request, address):

2501

1899

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

2502

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

2503

args=(request, address))

1900

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

1901

args = (request, address))

2504

1902

proc.start()

2505

1903

return proc

2506

1904

2507

1905

2508

1906

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

2509

1907

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

2510

2511

1908

def process_request(self, request, client_address):

2512

1909

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

2513

1910

2514

1911

This function creates a new pipe in self.pipe

2515

1912

"""

2516

1913

parent_pipe, self.child_pipe = multiprocessing.Pipe()

2517

1914

2518

1915

proc = MultiprocessingMixIn.process_request(self, request,

2519

1916

client_address)

2520

1917

self.child_pipe.close()

2521

1918

self.add_pipe(parent_pipe, proc)

2522

1919

2523

1920

def add_pipe(self, parent_pipe, proc):

2524

1921

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

2525

1922

raise NotImplementedError()

2528

1925

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

2529

1926

socketserver.TCPServer, object):

2530

1927

"""IPv6-capable TCP server. Accepts 'None' as address and/or port

2531

1928

2532

1929

Attributes:

2533

1930

enabled: Boolean; whether this server is activated yet

2534

1931

interface: None or a network interface name (string)

2535

1932

use_ipv6: Boolean; to use IPv6 or not

2536

1933

"""

2537

2538

1934

def __init__(self, server_address, RequestHandlerClass,

2539

interface=None,

2540

use_ipv6=True,

2541

socketfd=None):

1935

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

2542

1936

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

2543

1937

creating a new one with socket.socket().

2544

1938

"""

2550

1944

self.socketfd = socketfd

2551

1945

# Save the original socket.socket() function

2552

1946

self.socket_socket = socket.socket

2553

2554

1947

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

2555

#

1948

#

2556

1949

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

2557

1950

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

2558

1951

# patching socket.socket.)

2559

#

1952

#

2560

1953

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

2561

1954

@functools.wraps(socket.socket)

2562

1955

def socket_wrapper(*args, **kwargs):

2574

1967

# socket_wrapper(), if socketfd was set.

2575

1968

socketserver.TCPServer.__init__(self, server_address,

2576

1969

RequestHandlerClass)

2577

1970

2578

1971

def server_bind(self):

2579

1972

"""This overrides the normal server_bind() function

2580

1973

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

2581

1974

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

2582

global SO_BINDTODEVICE

2583

1975

if self.interface is not None:

2584

1976

if SO_BINDTODEVICE is None:

2585

# Fall back to a hard-coded value which seems to be

2586

# common enough.

2587

logger.warning("SO_BINDTODEVICE not found, trying 25")

2588

SO_BINDTODEVICE = 25

2589

try:

2590

self.socket.setsockopt(

2591

socket.SOL_SOCKET, SO_BINDTODEVICE,

2592

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

2593

except socket.error as error:

2594

if error.errno == errno.EPERM:

2595

logger.error("No permission to bind to"

2596

" interface %s", self.interface)

2597

elif error.errno == errno.ENOPROTOOPT:

2598

logger.error("SO_BINDTODEVICE not available;"

2599

" cannot bind to interface %s",

2600

self.interface)

2601

elif error.errno == errno.ENODEV:

2602

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

2603

" cannot bind", self.interface)

2604

else:

2605

raise

1977

logger.error("SO_BINDTODEVICE does not exist;"

1978

" cannot bind to interface %s",

1979

self.interface)

1980

else:

1981

try:

1982

self.socket.setsockopt(socket.SOL_SOCKET,

1983

SO_BINDTODEVICE,

1984

(self.interface + "\0")

1985

.encode("utf-8"))

1986

except socket.error as error:

1987

if error.errno == errno.EPERM:

1988

logger.error("No permission to bind to"

1989

" interface %s", self.interface)

1990

elif error.errno == errno.ENOPROTOOPT:

1991

logger.error("SO_BINDTODEVICE not available;"

1992

" cannot bind to interface %s",

1993

self.interface)

1994

elif error.errno == errno.ENODEV:

1995

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

1996

" cannot bind", self.interface)

1997

else:

1998

raise

2606

1999

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

2607

2000

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

2608

if self.server_address[1]:

2609

self.allow_reuse_address = True

2610

2001

if not self.server_address[0]:

2611

2002

if self.address_family == socket.AF_INET6:

2612

any_address = "::" # in6addr_any

2003

any_address = "::" # in6addr_any

2613

2004

else:

2614

any_address = "0.0.0.0" # INADDR_ANY

2005

any_address = "0.0.0.0" # INADDR_ANY

2615

2006

self.server_address = (any_address,

2616

2007

self.server_address[1])

2617

2008

elif not self.server_address[1]:

2618

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

2009

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

2010

0)

2619

2011

# if self.interface:

2620

2012

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

2621

2013

# 0, # port

2627

2019

2628

2020

class MandosServer(IPv6_TCPServer):

2629

2021

"""Mandos server.

2630

2022

2631

2023

Attributes:

2632

2024

clients: set of Client objects

2633

2025

gnutls_priority GnuTLS priority string

2634

2026

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

2635

2636

Assumes a GLib.MainLoop event loop.

2027

2028

Assumes a gobject.MainLoop event loop.

2637

2029

"""

2638

2639

2030

def __init__(self, server_address, RequestHandlerClass,

2640

interface=None,

2641

use_ipv6=True,

2642

clients=None,

2643

gnutls_priority=None,

2644

use_dbus=True,

2645

socketfd=None):

2031

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

2032

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

2646

2033

self.enabled = False

2647

2034

self.clients = clients

2648

2035

if self.clients is None:

2651

2038

self.gnutls_priority = gnutls_priority

2652

2039

IPv6_TCPServer.__init__(self, server_address,

2653

2040

RequestHandlerClass,

2654

interface=interface,

2655

use_ipv6=use_ipv6,

2656

socketfd=socketfd)

2657

2041

interface = interface,

2042

use_ipv6 = use_ipv6,

2043

socketfd = socketfd)

2658

2044

def server_activate(self):

2659

2045

if self.enabled:

2660

2046

return socketserver.TCPServer.server_activate(self)

2661

2047

2662

2048

def enable(self):

2663

2049

self.enabled = True

2664

2050

2665

2051

def add_pipe(self, parent_pipe, proc):

2666

2052

# Call "handle_ipc" for both data and EOF events

2667

GLib.io_add_watch(

2668

parent_pipe.fileno(),

2669

GLib.IO_IN | GLib.IO_HUP,

2670

functools.partial(self.handle_ipc,

2671

parent_pipe=parent_pipe,

2672

proc=proc))

2673

2674

def handle_ipc(self, source, condition,

2675

parent_pipe=None,

2676

proc=None,

2677

client_object=None):

2053

gobject.io_add_watch(parent_pipe.fileno(),

2054

gobject.IO_IN | gobject.IO_HUP,

2055

functools.partial(self.handle_ipc,

2056

parent_pipe =

2057

parent_pipe,

2058

proc = proc))

2059

2060

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

2061

proc = None, client_object=None):

2678

2062

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

2679

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

2063

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

2680

2064

# Wait for other process to exit

2681

2065

proc.join()

2682

2066

return False

2683

2067

2684

2068

# Read a request from the child

2685

2069

request = parent_pipe.recv()

2686

2070

command = request[0]

2687

2071

2688

2072

if command == 'init':

2689

key_id = request[1].decode("ascii")

2690

fpr = request[2].decode("ascii")

2691

address = request[3]

2692

2693

for c in self.clients.values():

2694

if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":

2695

continue

2696

if key_id and c.key_id == key_id:

2697

client = c

2698

break

2699

if fpr and c.fingerprint == fpr:

2073

fpr = request[1]

2074

address = request[2]

2075

2076

for c in self.clients.itervalues():

2077

if c.fingerprint == fpr:

2700

2078

client = c

2701

2079

break

2702

2080

else:

2703

logger.info("Client not found for key ID: %s, address"

2704

": %s", key_id or fpr, address)

2081

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

2082

"dress: %s", fpr, address)

2705

2083

if self.use_dbus:

2706

2084

# Emit D-Bus signal

2707

mandos_dbus_service.ClientNotFound(key_id or fpr,

2085

mandos_dbus_service.ClientNotFound(fpr,

2708

2086

address[0])

2709

2087

parent_pipe.send(False)

2710

2088

return False

2711

2712

GLib.io_add_watch(

2713

parent_pipe.fileno(),

2714

GLib.IO_IN | GLib.IO_HUP,

2715

functools.partial(self.handle_ipc,

2716

parent_pipe=parent_pipe,

2717

proc=proc,

2718

client_object=client))

2089

2090

gobject.io_add_watch(parent_pipe.fileno(),

2091

gobject.IO_IN | gobject.IO_HUP,

2092

functools.partial(self.handle_ipc,

2093

parent_pipe =

2094

parent_pipe,

2095

proc = proc,

2096

client_object =

2097

client))

2719

2098

parent_pipe.send(True)

2720

2099

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

2721

2100

# same fileno

2724

2103

funcname = request[1]

2725

2104

args = request[2]

2726

2105

kwargs = request[3]

2727

2106

2728

2107

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

2729

2108

funcname)(*args,

2730

**kwargs)))

2731

2109

**kwargs)))

2110

2732

2111

if command == 'getattr':

2733

2112

attrname = request[1]

2734

if isinstance(client_object.__getattribute__(attrname),

2735

collections.Callable):

2736

parent_pipe.send(('function', ))

2113

if callable(client_object.__getattribute__(attrname)):

2114

parent_pipe.send(('function',))

2737

2115

else:

2738

parent_pipe.send((

2739

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

2740

2116

parent_pipe.send(('data', client_object

2117

.__getattribute__(attrname)))

2118

2741

2119

if command == 'setattr':

2742

2120

attrname = request[1]

2743

2121

value = request[2]

2744

2122

setattr(client_object, attrname, value)

2745

2123

2746

2124

return True

2747

2125

2748

2126

2749

2127

def rfc3339_duration_to_delta(duration):

2750

2128

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

2751

2129

2752

2130

>>> rfc3339_duration_to_delta("P7D")

2753

2131

datetime.timedelta(7)

2754

2132

>>> rfc3339_duration_to_delta("PT60S")

2764

2142

>>> rfc3339_duration_to_delta("P1DT3M20S")

2765

2143

datetime.timedelta(1, 200)

2766

2144

"""

2767

2145

2768

2146

# Parsing an RFC 3339 duration with regular expressions is not

2769

2147

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

2770

2148

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

2771

2149

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

2772

2150

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

2773

2151

# avoid excessive use of external libraries.

2774

2152

2775

2153

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

2776

Token = collections.namedtuple("Token", (

2777

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

2778

# a "group" containing digits

2779

"value", # datetime.timedelta or None

2780

"followers")) # Tokens valid after this token

2154

Token = collections.namedtuple("Token",

2155

("regexp", # To match token; if

2156

# "value" is not None,

2157

# must have a "group"

2158

# containing digits

2159

"value", # datetime.timedelta or

2160

# None

2161

"followers")) # Tokens valid after

2162

# this token

2781

2163

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

2782

2164

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

2783

2165

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

2784

2166

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

2785

2167

datetime.timedelta(seconds=1),

2786

frozenset((token_end, )))

2168

frozenset((token_end,)))

2787

2169

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

2788

2170

datetime.timedelta(minutes=1),

2789

2171

frozenset((token_second, token_end)))

2805

2187

frozenset((token_month, token_end)))

2806

2188

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

2807

2189

datetime.timedelta(weeks=1),

2808

frozenset((token_end, )))

2190

frozenset((token_end,)))

2809

2191

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

2810

2192

frozenset((token_year, token_month,

2811

2193

token_day, token_time,

2812

2194

token_week)))

2813

# Define starting values:

2814

# Value so far

2815

value = datetime.timedelta()

2195

# Define starting values

2196

value = datetime.timedelta() # Value so far

2816

2197

found_token = None

2817

# Following valid tokens

2818

followers = frozenset((token_duration, ))

2819

# String left to parse

2820

s = duration

2198

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

2199

s = duration # String left to parse

2821

2200

# Loop until end token is found

2822

2201

while found_token is not token_end:

2823

2202

# Search for any currently valid tokens

2839

2218

break

2840

2219

else:

2841

2220

# No currently valid tokens were found

2842

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

2843

.format(duration))

2221

raise ValueError("Invalid RFC 3339 duration")

2844

2222

# End token found

2845

2223

return value

2846

2224

2847

2225

2848

2226

def string_to_delta(interval):

2849

2227

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

2850

2228

2851

2229

>>> string_to_delta('7d')

2852

2230

datetime.timedelta(7)

2853

2231

>>> string_to_delta('60s')

2861

2239

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

2862

2240

datetime.timedelta(0, 330)

2863

2241

"""

2864

2242

2865

2243

try:

2866

2244

return rfc3339_duration_to_delta(interval)

2867

2245

except ValueError:

2868

2246

pass

2869

2247

2870

2248

timevalue = datetime.timedelta(0)

2871

2249

for s in interval.split():

2872

2250

try:

2883

2261

elif suffix == "w":

2884

2262

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

2885

2263

else:

2886

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

2264

raise ValueError("Unknown suffix {!r}"

2265

.format(suffix))

2887

2266

except IndexError as e:

2888

2267

raise ValueError(*(e.args))

2889

2268

timevalue += delta

2890

2269

return timevalue

2891

2270

2892

2271

2893

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

2272

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

2894

2273

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

2895

2274

2896

2275

This should really exist as os.daemon, but it doesn't (yet)."""

2897

2276

if os.fork():

2898

2277

sys.exit()

2905

2284

# Close all standard open file descriptors

2906

2285

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

2907

2286

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

2908

raise OSError(errno.ENODEV,

2909

"{} not a character device"

2287

raise OSError(errno.ENODEV, "{} not a character device"

2910

2288

.format(os.devnull))

2911

2289

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

2912

2290

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

2916

2294

2917

2295

2918

2296

def main():

2919

2297

2920

2298

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

2921

2299

# Parsing of options, both command line and config file

2922

2300

2923

2301

parser = argparse.ArgumentParser()

2924

2302

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

2925

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

2303

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

2926

2304

help="show version number and exit")

2927

2305

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

2928

2306

help="Bind to interface IF")

2964

2342

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

2965

2343

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

2966

2344

default=None)

2967

2345

2968

2346

options = parser.parse_args()

2969

2347

2970

2348

if options.check:

2971

2349

import doctest

2972

2350

fail_count, test_count = doctest.testmod()

2973

2351

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

2974

2352

2975

2353

# Default values for config file for server-global settings

2976

if gnutls.has_rawpk:

2977

priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"

2978

":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")

2979

else:

2980

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

2981

":+SIGN-DSA-SHA256")

2982

server_defaults = {"interface": "",

2983

"address": "",

2984

"port": "",

2985

"debug": "False",

2986

"priority": priority,

2987

"servicename": "Mandos",

2988

"use_dbus": "True",

2989

"use_ipv6": "True",

2990

"debuglevel": "",

2991

"restore": "True",

2992

"socket": "",

2993

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

2994

"foreground": "False",

2995

"zeroconf": "True",

2996

}

2997

del priority

2998

2354

server_defaults = { "interface": "",

2355

"address": "",

2356

"port": "",

2357

"debug": "False",

2358

"priority":

2359

"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",

2360

"servicename": "Mandos",

2361

"use_dbus": "True",

2362

"use_ipv6": "True",

2363

"debuglevel": "",

2364

"restore": "True",

2365

"socket": "",

2366

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

2367

"foreground": "False",

2368

"zeroconf": "True",

2369

}

2370

2999

2371

# Parse config file for server-global settings

3000

2372

server_config = configparser.SafeConfigParser(server_defaults)

3001

2373

del server_defaults

3002

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

2374

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

2375

"mandos.conf"))

3003

2376

# Convert the SafeConfigParser object to a dict

3004

2377

server_settings = server_config.defaults()

3005

2378

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

3006

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

3007

"foreground", "zeroconf"):

2379

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

3008

2380

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

3009

2381

option)

3010

2382

if server_settings["port"]:

3020

2392

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

3021

2393

["socket"])

3022

2394

del server_config

3023

2395

3024

2396

# Override the settings from the config file with command line

3025

2397

# options, if set.

3026

2398

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

3027

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

3028

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

3029

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

2399

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

2400

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

2401

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

3030

2402

value = getattr(options, option)

3031

2403

if value is not None:

3032

2404

server_settings[option] = value

3044

2416

if server_settings["debug"]:

3045

2417

server_settings["foreground"] = True

3046

2418

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

3047

2419

3048

2420

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

3049

3050

if (not server_settings["zeroconf"]

3051

and not (server_settings["port"]

3052

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

3053

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

3054

2421

2422

if (not server_settings["zeroconf"] and

2423

not (server_settings["port"]

2424

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

2425

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

2426

" Zeroconf")

2427

3055

2428

# For convenience

3056

2429

debug = server_settings["debug"]

3057

2430

debuglevel = server_settings["debuglevel"]

3061

2434

stored_state_file)

3062

2435

foreground = server_settings["foreground"]

3063

2436

zeroconf = server_settings["zeroconf"]

3064

2437

3065

2438

if debug:

3066

2439

initlogger(debug, logging.DEBUG)

3067

2440

else:

3070

2443

else:

3071

2444

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

3072

2445

initlogger(debug, level)

3073

2446

3074

2447

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

3075

syslogger.setFormatter(

3076

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

3077

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

3078

server_settings["servicename"])))

3079

2448

syslogger.setFormatter(logging.Formatter

2449

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

2450

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

2451

.format(server_settings

2452

["servicename"])))

2453

3080

2454

# Parse config file with clients

3081

2455

client_config = configparser.SafeConfigParser(Client

3082

2456

.client_defaults)

3083

2457

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

3084

2458

"clients.conf"))

3085

2459

3086

2460

global mandos_dbus_service

3087

2461

mandos_dbus_service = None

3088

2462

3089

2463

socketfd = None

3090

2464

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

3091

2465

socketfd = server_settings["socket"]

3092

tcp_server = MandosServer(

3093

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

3094

ClientHandler,

3095

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

3096

use_ipv6=use_ipv6,

3097

gnutls_priority=server_settings["priority"],

3098

use_dbus=use_dbus,

3099

socketfd=socketfd)

2466

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

2467

server_settings["port"]),

2468

ClientHandler,

2469

interface=(server_settings["interface"]

2470

or None),

2471

use_ipv6=use_ipv6,

2472

gnutls_priority=

2473

server_settings["priority"],

2474

use_dbus=use_dbus,

2475

socketfd=socketfd)

3100

2476

if not foreground:

3101

2477

pidfilename = "/run/mandos.pid"

3102

2478

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

3103

2479

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

3104

2480

pidfile = None

3105

2481

try:

3106

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

2482

pidfile = open(pidfilename, "w")

3107

2483

except IOError as e:

3108

2484

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

3109

2485

exc_info=e)

3110

3111

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

3112

("mandos", "mandos"),

3113

("nobody", "nogroup")):

2486

2487

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

3114

2488

try:

3115

2489

uid = pwd.getpwnam(name).pw_uid

3116

gid = pwd.getpwnam(group).pw_gid

2490

gid = pwd.getpwnam(name).pw_gid

3117

2491

break

3118

2492

except KeyError:

3119

2493

continue

3123

2497

try:

3124

2498

os.setgid(gid)

3125

2499

os.setuid(uid)

3126

if debug:

3127

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

3128

gid))

3129

2500

except OSError as error:

3130

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

3131

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

3132

2501

if error.errno != errno.EPERM:

3133

2502

raise

3134

2503

3135

2504

if debug:

3136

2505

# Enable all possible GnuTLS debugging

3137

2506

3138

2507

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

3139

2508

# - GnuTLS manual

3140

gnutls.global_set_log_level(11)

3141

3142

@gnutls.log_func

2509

gnutls.library.functions.gnutls_global_set_log_level(11)

2510

2511

@gnutls.library.types.gnutls_log_func

3143

2512

def debug_gnutls(level, string):

3144

2513

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

3145

3146

gnutls.global_set_log_function(debug_gnutls)

3147

2514

2515

(gnutls.library.functions

2516

.gnutls_global_set_log_function(debug_gnutls))

2517

3148

2518

# Redirect stdin so all checkers get /dev/null

3149

2519

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

3150

2520

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

3151

2521

if null > 2:

3152

2522

os.close(null)

3153

2523

3154

2524

# Need to fork before connecting to D-Bus

3155

2525

if not foreground:

3156

2526

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

3157

2527

daemon()

3158

3159

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

3160

# to inform GLib that threads will be used.

3161

GLib.threads_init()

3162

2528

2529

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

2530

# need to inform gobject that threads will be used.

2531

gobject.threads_init()

2532

3163

2533

global main_loop

3164

2534

# From the Avahi example code

3165

2535

DBusGMainLoop(set_as_default=True)

3166

main_loop = GLib.MainLoop()

2536

main_loop = gobject.MainLoop()

3167

2537

bus = dbus.SystemBus()

3168

2538

# End of Avahi example code

3169

2539

if use_dbus:

3170

2540

try:

3171

2541

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

3172

bus,

3173

do_not_queue=True)

3174

old_bus_name = dbus.service.BusName(

3175

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

3176

do_not_queue=True)

3177

except dbus.exceptions.DBusException as e:

2542

bus, do_not_queue=True)

2543

old_bus_name = (dbus.service.BusName

2544

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

2545

do_not_queue=True))

2546

except dbus.exceptions.NameExistsException as e:

3178

2547

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

3179

2548

use_dbus = False

3180

2549

server_settings["use_dbus"] = False

3181

2550

tcp_server.use_dbus = False

3182

2551

if zeroconf:

3183

2552

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

3184

service = AvahiServiceToSyslog(

3185

name=server_settings["servicename"],

3186

servicetype="_mandos._tcp",

3187

protocol=protocol,

3188

bus=bus)

2553

service = AvahiServiceToSyslog(name =

2554

server_settings["servicename"],

2555

servicetype = "_mandos._tcp",

2556

protocol = protocol, bus = bus)

3189

2557

if server_settings["interface"]:

3190

service.interface = if_nametoindex(

3191

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

3192

2558

service.interface = (if_nametoindex

2559

(server_settings["interface"]

2560

.encode("utf-8")))

2561

3193

2562

global multiprocessing_manager

3194

2563

multiprocessing_manager = multiprocessing.Manager()

3195

2564

3196

2565

client_class = Client

3197

2566

if use_dbus:

3198

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

3199

2567

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

2568

3200

2569

client_settings = Client.config_parser(client_config)

3201

2570

old_client_settings = {}

3202

2571

clients_data = {}

3203

2572

3204

2573

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

3205

2574

global wnull

3206

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

2575

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

3207

2576

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

3208

2577

# mode

3209

2578

if debug or not foreground:

3210

2579

wnull.close()

3211

2580

3212

2581

# Get client data and settings from last running state.

3213

2582

if server_settings["restore"]:

3214

2583

try:

3215

2584

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

3216

if sys.version_info.major == 2:

3217

clients_data, old_client_settings = pickle.load(

3218

stored_state)

3219

else:

3220

bytes_clients_data, bytes_old_client_settings = (

3221

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

3222

# Fix bytes to strings

3223

# clients_data

3224

# .keys()

3225

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

3226

if isinstance(key, bytes)

3227

else key): value

3228

for key, value in

3229

bytes_clients_data.items()}

3230

del bytes_clients_data

3231

for key in clients_data:

3232

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

3233

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

3234

for k, v in

3235

clients_data[key].items()}

3236

clients_data[key] = value

3237

# .client_structure

3238

value["client_structure"] = [

3239

(s.decode("utf-8")

3240

if isinstance(s, bytes)

3241

else s) for s in

3242

value["client_structure"]]

3243

# .name & .host

3244

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

3245

if isinstance(value[k], bytes):

3246

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

3247

if not value.has_key("key_id"):

3248

value["key_id"] = ""

3249

elif not value.has_key("fingerprint"):

3250

value["fingerprint"] = ""

3251

# old_client_settings

3252

# .keys()

3253

old_client_settings = {

3254

(key.decode("utf-8")

3255

if isinstance(key, bytes)

3256

else key): value

3257

for key, value in

3258

bytes_old_client_settings.items()}

3259

del bytes_old_client_settings

3260

# .host

3261

for value in old_client_settings.values():

3262

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

3263

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

3264

.decode("utf-8"))

2585

clients_data, old_client_settings = (pickle.load

2586

(stored_state))

3265

2587

os.remove(stored_state_path)

3266

2588

except IOError as e:

3267

2589

if e.errno == errno.ENOENT:

3268

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

3269

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

2590

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

2591

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

3270

2592

else:

3271

2593

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

3272

2594

exc_info=e)

3273

2595

raise

3274

2596

except EOFError as e:

3275

2597

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

3276

"EOFError:",

3277

exc_info=e)

3278

2598

"EOFError:", exc_info=e)

2599

3279

2600

with PGPEngine() as pgp:

3280

2601

for client_name, client in clients_data.items():

3281

2602

# Skip removed clients

3282

2603

if client_name not in client_settings:

3283

2604

continue

3284

2605

3285

2606

# Decide which value to use after restoring saved state.

3286

2607

# We have three different values: Old config file,

3287

2608

# new config file, and saved state.

3292

2613

# For each value in new config, check if it

3293

2614

# differs from the old config value (Except for

3294

2615

# the "secret" attribute)

3295

if (name != "secret"

3296

and (value !=

3297

old_client_settings[client_name][name])):

2616

if (name != "secret" and

2617

value != old_client_settings[client_name]

2618

[name]):

3298

2619

client[name] = value

3299

2620

except KeyError:

3300

2621

pass

3301

2622

3302

2623

# Clients who has passed its expire date can still be

3303

# enabled if its last checker was successful. A Client

2624

# enabled if its last checker was successful. Clients

3304

2625

# whose checker succeeded before we stored its state is

3305

2626

# assumed to have successfully run all checkers during

3306

2627

# downtime.

3309

2630

if not client["last_checked_ok"]:

3310

2631

logger.warning(

3311

2632

"disabling client {} - Client never "

3312

"performed a successful checker".format(

3313

client_name))

2633

"performed a successful checker"

2634

.format(client_name))

3314

2635

client["enabled"] = False

3315

2636

elif client["last_checker_status"] != 0:

3316

2637

logger.warning(

3317

2638

"disabling client {} - Client last"

3318

" checker failed with error code"

3319

" {}".format(

3320

client_name,

3321

client["last_checker_status"]))

2639

" checker failed with error code {}"

2640

.format(client_name,

2641

client["last_checker_status"]))

3322

2642

client["enabled"] = False

3323

2643

else:

3324

client["expires"] = (

3325

datetime.datetime.utcnow()

3326

+ client["timeout"])

2644

client["expires"] = (datetime.datetime

2645

.utcnow()

2646

+ client["timeout"])

3327

2647

logger.debug("Last checker succeeded,"

3328

" keeping {} enabled".format(

3329

client_name))

2648

" keeping {} enabled"

2649

.format(client_name))

3330

2650

try:

3331

client["secret"] = pgp.decrypt(

3332

client["encrypted_secret"],

3333

client_settings[client_name]["secret"])

2651

client["secret"] = (

2652

pgp.decrypt(client["encrypted_secret"],

2653

client_settings[client_name]

2654

["secret"]))

3334

2655

except PGPError:

3335

2656

# If decryption fails, we use secret from new settings

3336

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

3337

client_name))

3338

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

3339

["secret"])

3340

2657

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

2658

.format(client_name))

2659

client["secret"] = (

2660

client_settings[client_name]["secret"])

2661

3341

2662

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

3342

2663

for client_name in (set(old_client_settings)

3343

2664

- set(client_settings)):

3345

2666

for client_name in (set(client_settings)

3346

2667

- set(old_client_settings)):

3347

2668

clients_data[client_name] = client_settings[client_name]

3348

2669

3349

2670

# Create all client objects

3350

2671

for client_name, client in clients_data.items():

3351

2672

tcp_server.clients[client_name] = client_class(

3352

name=client_name,

3353

settings=client,

3354

server_settings=server_settings)

3355

2673

name = client_name, settings = client,

2674

server_settings = server_settings)

2675

3356

2676

if not tcp_server.clients:

3357

2677

logger.warning("No clients defined")

3358

2678

3359

2679

if not foreground:

3360

2680

if pidfile is not None:

3361

pid = os.getpid()

3362

2681

try:

3363

2682

with pidfile:

3364

print(pid, file=pidfile)

2683

pid = os.getpid()

2684

pidfile.write("{}\n".format(pid).encode("utf-8"))

3365

2685

except IOError:

3366

2686

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

3367

2687

pidfilename, pid)

3368

2688

del pidfile

3369

2689

del pidfilename

3370

3371

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

3372

GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,

3373

lambda: main_loop.quit() and False)

3374

2690

2691

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

2692

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

2693

3375

2694

if use_dbus:

3376

3377

@alternate_dbus_interfaces(

3378

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

3379

class MandosDBusService(DBusObjectWithObjectManager):

2695

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

2696

"se.bsnet.fukt.Mandos"})

2697

class MandosDBusService(DBusObjectWithProperties):

3380

2698

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

3381

3382

2699

def __init__(self):

3383

2700

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

3384

3385

2701

_interface = "se.recompile.Mandos"

3386

2702

2703

@dbus_interface_annotations(_interface)

2704

def _foo(self):

2705

return { "org.freedesktop.DBus.Property"

2706

".EmitsChangedSignal":

2707

"false"}

2708

3387

2709

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

3388

2710

def ClientAdded(self, objpath):

3389

2711

"D-Bus signal"

3390

2712

pass

3391

2713

3392

2714

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

3393

def ClientNotFound(self, key_id, address):

2715

def ClientNotFound(self, fingerprint, address):

3394

2716

"D-Bus signal"

3395

2717

pass

3396

3397

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

3398

"true"})

2718

3399

2719

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

3400

2720

def ClientRemoved(self, objpath, name):

3401

2721

"D-Bus signal"

3402

2722

pass

3403

3404

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

3405

"true"})

2723

3406

2724

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

3407

2725

def GetAllClients(self):

3408

2726

"D-Bus method"

3409

return dbus.Array(c.dbus_object_path for c in

3410

tcp_server.clients.values())

3411

3412

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

3413

"true"})

2727

return dbus.Array(c.dbus_object_path

2728

for c in

2729

tcp_server.clients.itervalues())

2730

3414

2731

@dbus.service.method(_interface,

3415

2732

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

3416

2733

def GetAllClientsWithProperties(self):

3417

2734

"D-Bus method"

3418

2735

return dbus.Dictionary(

3419

{c.dbus_object_path: c.GetAll(

3420

"se.recompile.Mandos.Client")

3421

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

2736

{ c.dbus_object_path: c.GetAll("")

2737

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

3422

2738

signature="oa{sv}")

3423

2739

3424

2740

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

3425

2741

def RemoveClient(self, object_path):

3426

2742

"D-Bus method"

3427

for c in tcp_server.clients.values():

2743

for c in tcp_server.clients.itervalues():

3428

2744

if c.dbus_object_path == object_path:

3429

2745

del tcp_server.clients[c.name]

3430

2746

c.remove_from_connection()

3431

# Don't signal the disabling

2747

# Don't signal anything except ClientRemoved

3432

2748

c.disable(quiet=True)

3433

# Emit D-Bus signal for removal

3434

self.client_removed_signal(c)

2749

# Emit D-Bus signal

2750

self.ClientRemoved(object_path, c.name)

3435

2751

return

3436

2752

raise KeyError(object_path)

3437

2753

3438

2754

del _interface

3439

3440

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

3441

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

3442

def GetManagedObjects(self):

3443

"""D-Bus method"""

3444

return dbus.Dictionary(

3445

{client.dbus_object_path:

3446

dbus.Dictionary(

3447

{interface: client.GetAll(interface)

3448

for interface in

3449

client._get_all_interface_names()})

3450

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

3451

3452

def client_added_signal(self, client):

3453

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

3454

if use_dbus:

3455

# New standard signal

3456

self.InterfacesAdded(

3457

client.dbus_object_path,

3458

dbus.Dictionary(

3459

{interface: client.GetAll(interface)

3460

for interface in

3461

client._get_all_interface_names()}))

3462

# Old signal

3463

self.ClientAdded(client.dbus_object_path)

3464

3465

def client_removed_signal(self, client):

3466

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

3467

if use_dbus:

3468

# New standard signal

3469

self.InterfacesRemoved(

3470

client.dbus_object_path,

3471

client._get_all_interface_names())

3472

# Old signal

3473

self.ClientRemoved(client.dbus_object_path,

3474

client.name)

3475

2755

3476

2756

mandos_dbus_service = MandosDBusService()

3477

3478

# Save modules to variables to exempt the modules from being

3479

# unloaded before the function registered with atexit() is run.

3480

mp = multiprocessing

3481

wn = wnull

3482

2757

3483

2758

def cleanup():

3484

2759

"Cleanup function; run on exit"

3485

2760

if zeroconf:

3486

2761

service.cleanup()

3487

3488

mp.active_children()

3489

wn.close()

2762

2763

multiprocessing.active_children()

2764

wnull.close()

3490

2765

if not (tcp_server.clients or client_settings):

3491

2766

return

3492

2767

3493

2768

# Store client before exiting. Secrets are encrypted with key

3494

2769

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

3495

2770

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

3496

2771

clients = {}

3497

2772

with PGPEngine() as pgp:

3498

for client in tcp_server.clients.values():

2773

for client in tcp_server.clients.itervalues():

3499

2774

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

3500

2775

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

3501

2776

key)

3502

2777

client_dict = {}

3503

2778

3504

2779

# A list of attributes that can not be pickled

3505

2780

# + secret.

3506

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

3507

"checker", "server_settings"}

3508

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

3509

.Object):

2781

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

2782

"checker", "server_settings" }

2783

for name, typ in (inspect.getmembers

2784

(dbus.service.Object)):

3510

2785

exclude.add(name)

3511

2786

3512

2787

client_dict["encrypted_secret"] = (client

3513

2788

.encrypted_secret)

3514

2789

for attr in client.client_structure:

3515

2790

if attr not in exclude:

3516

2791

client_dict[attr] = getattr(client, attr)

3517

2792

3518

2793

clients[client.name] = client_dict

3519

2794

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

3520

2795

3521

2796

try:

3522

with tempfile.NamedTemporaryFile(

3523

mode='wb',

3524

suffix=".pickle",

3525

prefix='clients-',

3526

dir=os.path.dirname(stored_state_path),

3527

delete=False) as stored_state:

3528

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

3529

protocol=2)

3530

tempname = stored_state.name

2797

with (tempfile.NamedTemporaryFile

2798

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

2799

dir=os.path.dirname(stored_state_path),

2800

delete=False)) as stored_state:

2801

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

2802

tempname=stored_state.name

3531

2803

os.rename(tempname, stored_state_path)

3532

2804

except (IOError, OSError) as e:

3533

2805

if not debug:

3542

2814

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

3543

2815

exc_info=e)

3544

2816

raise

3545

2817

3546

2818

# Delete all clients, and settings from config

3547

2819

while tcp_server.clients:

3548

2820

name, client = tcp_server.clients.popitem()

3549

2821

if use_dbus:

3550

2822

client.remove_from_connection()

3551

# Don't signal the disabling

2823

# Don't signal anything except ClientRemoved

3552

2824

client.disable(quiet=True)

3553

# Emit D-Bus signal for removal

3554

2825

if use_dbus:

3555

mandos_dbus_service.client_removed_signal(client)

2826

# Emit D-Bus signal

2827

mandos_dbus_service.ClientRemoved(client

2828

.dbus_object_path,

2829

client.name)

3556

2830

client_settings.clear()

3557

2831

3558

2832

atexit.register(cleanup)

3559

3560

for client in tcp_server.clients.values():

2833

2834

for client in tcp_server.clients.itervalues():

3561

2835

if use_dbus:

3562

# Emit D-Bus signal for adding

3563

mandos_dbus_service.client_added_signal(client)

2836

# Emit D-Bus signal

2837

mandos_dbus_service.ClientAdded(client.dbus_object_path)

3564

2838

# Need to initiate checking of clients

3565

2839

if client.enabled:

3566

2840

client.init_checker()

3567

2841

3568

2842

tcp_server.enable()

3569

2843

tcp_server.server_activate()

3570

2844

3571

2845

# Find out what port we got

3572

2846

if zeroconf:

3573

2847

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

3578

2852

else: # IPv4

3579

2853

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

3580

2854

*tcp_server.socket.getsockname())

3581

3582

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

3583

2855

2856

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

2857

3584

2858

try:

3585

2859

if zeroconf:

3586

2860

# From the Avahi example code

3591

2865

cleanup()

3592

2866

sys.exit(1)

3593

2867

# End of Avahi example code

3594

3595

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

3596

lambda *args, **kwargs:

3597

(tcp_server.handle_request

3598

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

3599

2868

2869

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

2870

lambda *args, **kwargs:

2871

(tcp_server.handle_request

2872

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

2873

3600

2874

logger.debug("Starting main loop")

3601

2875

main_loop.run()

3602

2876

except AvahiError as error:

3611

2885

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

3612

2886

cleanup()

3613

2887

3614

3615

2888

if __name__ == '__main__':

3616

2889

main()