/mandos/release : revision 353

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#!/usr/bin/python

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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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#

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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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# 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 this program. If not, see

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

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#

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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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from future_builtins import *

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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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import SocketServer as socketserver

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try:

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import SocketServer as socketserver

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except ImportError:

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import socketserver

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import socket

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import argparse

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import datetime

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import errno

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import gnutls.crypto

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import gnutls.connection

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import gnutls.errors

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import gnutls.library.functions

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import gnutls.library.constants

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import gnutls.library.types

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import ConfigParser as configparser

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try:

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import ConfigParser as configparser

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except ImportError:

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import configparser

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import sys

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import re

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import os

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import struct

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import fcntl

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import functools

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import cPickle as pickle

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try:

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import cPickle as pickle

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except ImportError:

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import pickle

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import multiprocessing

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import types

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import binascii

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import tempfile

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import itertools

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import collections

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import codecs

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import dbus

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import dbus.service

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import gobject

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import avahi

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from gi.repository import GLib

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from dbus.mainloop.glib import DBusGMainLoop

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import ctypes

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import ctypes.util

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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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SO_BINDTODEVICE = None

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version = "1.6.2"

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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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if sys.version_info.major == 2:

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str = unicode

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version = "1.7.12"

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stored_state_file = "clients.pickle"

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logger = logging.getLogger()

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syslogger = (logging.handlers.SysLogHandler

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(facility = logging.handlers.SysLogHandler.LOG_DAEMON,

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

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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"))

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.if_nametoindex)

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if_nametoindex = ctypes.cdll.LoadLibrary(

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

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except (OSError, AttributeError):

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def if_nametoindex(interface):

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

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

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

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ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

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

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interface))

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

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ifreq[16:20])[0]

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

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

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return interface_index

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def copy_function(func):

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

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if sys.version_info.major == 2:

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return types.FunctionType(func.func_code,

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func.func_globals,

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func.func_name,

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func.func_defaults,

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func.func_closure)

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else:

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return types.FunctionType(func.__code__,

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func.__globals__,

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func.__name__,

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func.__defaults__,

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func.__closure__)

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

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"""init logger and add loglevel"""

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global syslogger

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syslogger = (logging.handlers.SysLogHandler(

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facility=logging.handlers.SysLogHandler.LOG_DAEMON,

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address="/dev/log"))

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syslogger.setFormatter(logging.Formatter

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

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' %(message)s'))

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logger.addHandler(syslogger)

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if debug:

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console = logging.StreamHandler()

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

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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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'--home', self.tempdir,

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'--homedir', self.tempdir,

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'--force-mdc',

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'--quiet',

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'--no-use-agent']

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'--quiet']

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

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

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self.gnupgargs.append("--no-use-agent")

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def __enter__(self):

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return self

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

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self._cleanup()

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return False

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def __del__(self):

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self._cleanup()

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def _cleanup(self):

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if self.tempdir is not None:

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# Delete contents of tempdir

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

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topdown = False):

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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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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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def encrypt(self, data, password):

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passphrase = self.password_encode(password)

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with tempfile.NamedTemporaryFile(dir=self.tempdir

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) as passfile:

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with tempfile.NamedTemporaryFile(

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dir=self.tempdir) as passfile:

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passfile.write(passphrase)

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passfile.flush()

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

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

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'--passphrase-file',

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passfile.name]

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+ self.gnupgargs,

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stdin = subprocess.PIPE,

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stdout = subprocess.PIPE,

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stderr = subprocess.PIPE)

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

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stdin=subprocess.PIPE,

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stdout=subprocess.PIPE,

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stderr=subprocess.PIPE)

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

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if proc.returncode != 0:

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raise PGPError(err)

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return ciphertext

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def decrypt(self, data, password):

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passphrase = self.password_encode(password)

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with tempfile.NamedTemporaryFile(dir = self.tempdir

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) as passfile:

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with tempfile.NamedTemporaryFile(

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dir=self.tempdir) as passfile:

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passfile.write(passphrase)

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passfile.flush()

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

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

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'--passphrase-file',

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passfile.name]

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+ self.gnupgargs,

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stdin = subprocess.PIPE,

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stdout = subprocess.PIPE,

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stderr = subprocess.PIPE)

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decrypted_plaintext, err = proc.communicate(input

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= 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=data)

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if proc.returncode != 0:

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raise PGPError(err)

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return decrypted_plaintext

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# Pretend that we have an Avahi module

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class Avahi(object):

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

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

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

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

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PROTO_INET = 0 # avahi-common/address.h

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PROTO_INET6 = 1 # avahi-common/address.h

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DBUS_NAME = "org.freedesktop.Avahi"

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DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"

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DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"

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DBUS_PATH_SERVER = "/"

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def string_array_to_txt_array(self, t):

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

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

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ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h

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ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h

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ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h

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SERVER_INVALID = 0 # avahi-common/defs.h

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SERVER_REGISTERING = 1 # avahi-common/defs.h

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SERVER_RUNNING = 2 # avahi-common/defs.h

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SERVER_COLLISION = 3 # avahi-common/defs.h

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SERVER_FAILURE = 4 # avahi-common/defs.h

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avahi = Avahi()

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class AvahiError(Exception):

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

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self.value = value

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

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def __unicode__(self):

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return unicode(repr(self.value))

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

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**kwargs)

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class AvahiServiceError(AvahiError):

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pass

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class AvahiGroupError(AvahiError):

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pass

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class AvahiService(object):

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"""An Avahi (Zeroconf) service.

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Attributes:

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

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Used to optionally bind to the specified interface.

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server: D-Bus Server

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bus: dbus.SystemBus()

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"""

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

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

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

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protocol = avahi.PROTO_UNSPEC, bus = None):

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def __init__(self,

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interface=avahi.IF_UNSPEC,

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name=None,

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servicetype=None,

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port=None,

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TXT=None,

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domain="",

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host="",

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max_renames=32768,

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protocol=avahi.PROTO_UNSPEC,

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bus=None):

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self.interface = interface

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self.name = name

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352

self.type = servicetype

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361

self.server = None

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self.bus = bus

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self.entry_group_state_changed_match = None

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def rename(self):

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365

def rename(self, remove=True):

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

277

367

if self.rename_count >= self.max_renames:

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368

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

279

369

" after %i retries, exiting.",

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self.rename_count)

281

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raise AvahiServiceError("Too many renames")

282

self.name = unicode(self.server

283

.GetAlternativeServiceName(self.name))

372

self.name = str(

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self.server.GetAlternativeServiceName(self.name))

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self.rename_count += 1

284

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

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376

self.name)

286

self.remove()

377

if remove:

378

self.remove()

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try:

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self.add()

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381

except dbus.exceptions.DBusException as error:

290

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

291

self.cleanup()

292

os._exit(1)

293

self.rename_count += 1

294

382

if (error.get_dbus_name()

383

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

384

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

385

return self.rename(remove=False)

386

else:

387

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

388

self.cleanup()

389

os._exit(1)

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391

def remove(self):

296

392

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

297

393

if self.entry_group_state_changed_match is not None:

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395

self.entry_group_state_changed_match = None

300

396

if self.group is not None:

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397

self.group.Reset()

302

398

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399

def add(self):

304

400

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

305

401

self.remove()

322

418

dbus.UInt16(self.port),

323

419

avahi.string_array_to_txt_array(self.TXT))

324

420

self.group.Commit()

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421

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422

def entry_group_state_changed(self, state, error):

327

423

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

328

424

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

329

425

330

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if state == avahi.ENTRY_GROUP_ESTABLISHED:

331

427

logger.debug("Zeroconf service established.")

332

428

elif state == avahi.ENTRY_GROUP_COLLISION:

334

430

self.rename()

335

431

elif state == avahi.ENTRY_GROUP_FAILURE:

336

432

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

337

unicode(error))

338

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

339

.format(error))

340

433

str(error))

434

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

435

341

436

def cleanup(self):

342

437

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

343

438

if self.group is not None:

348

443

pass

349

444

self.group = None

350

445

self.remove()

351

446

352

447

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

353

448

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

354

449

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

355

bad_states = { avahi.SERVER_INVALID:

356

"Zeroconf server invalid",

357

avahi.SERVER_REGISTERING: None,

358

avahi.SERVER_COLLISION:

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"Zeroconf server name collision",

360

avahi.SERVER_FAILURE:

361

"Zeroconf server failure" }

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

}

362

456

if state in bad_states:

363

457

if bad_states[state] is not None:

364

458

if error is None:

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461

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

368

462

self.cleanup()

369

463

elif state == avahi.SERVER_RUNNING:

370

self.add()

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)

371

476

else:

372

477

if error is None:

373

478

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

374

479

else:

375

480

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

376

481

377

482

def activate(self):

378

483

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

379

484

if self.server is None:

383

488

follow_name_owner_changes=True),

384

489

avahi.DBUS_INTERFACE_SERVER)

385

490

self.server.connect_to_signal("StateChanged",

386

self.server_state_changed)

491

self.server_state_changed)

387

492

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

388

493

389

494

390

495

class AvahiServiceToSyslog(AvahiService):

391

def rename(self):

496

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

392

497

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

393

ret = AvahiService.rename(self)

394

syslogger.setFormatter(logging.Formatter

395

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

396

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

397

.format(self.name)))

498

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

499

syslogger.setFormatter(logging.Formatter(

500

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

501

.format(self.name)))

398

502

return ret

399

503

400

504

401

def timedelta_to_milliseconds(td):

402

"Convert a datetime.timedelta() to milliseconds"

403

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

404

+ (td.seconds * 1000)

405

+ (td.microseconds // 1000))

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

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

509

510

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

511

if library is None:

512

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

513

_library = ctypes.cdll.LoadLibrary(library)

514

del library

515

_need_version = b"3.3.0"

516

517

def __init__(self):

518

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

519

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

520

# happens.

521

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

522

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

523

.format(self._need_version))

524

525

# Unless otherwise indicated, the constants and types below are

526

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

527

528

# Constants

529

E_SUCCESS = 0

530

E_INTERRUPTED = -52

531

E_AGAIN = -28

532

CRT_OPENPGP = 2

533

CLIENT = 2

534

SHUT_RDWR = 0

535

CRD_CERTIFICATE = 1

536

E_NO_CERTIFICATE_FOUND = -49

537

OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h

538

539

# Types

540

class session_int(ctypes.Structure):

541

_fields_ = []

542

session_t = ctypes.POINTER(session_int)

543

544

class certificate_credentials_st(ctypes.Structure):

545

_fields_ = []

546

certificate_credentials_t = ctypes.POINTER(

547

certificate_credentials_st)

548

certificate_type_t = ctypes.c_int

549

550

class datum_t(ctypes.Structure):

551

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

552

('size', ctypes.c_uint)]

553

554

class openpgp_crt_int(ctypes.Structure):

555

_fields_ = []

556

openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)

557

openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h

558

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

559

credentials_type_t = ctypes.c_int

560

transport_ptr_t = ctypes.c_void_p

561

close_request_t = ctypes.c_int

562

563

# Exceptions

564

class Error(Exception):

565

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

566

# exception might be raised from within GnuTLS.__init__,

567

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

568

# global variable has happened.

569

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

570

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

571

# code is passed, convert it to a string with

572

# gnutls.strerror()

573

self.code = code

574

if message is None and code is not None:

575

message = GnuTLS.strerror(code)

576

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

577

message, *args)

578

579

class CertificateSecurityError(Error):

580

pass

581

582

# Classes

583

class Credentials(object):

584

def __init__(self):

585

self._c_object = gnutls.certificate_credentials_t()

586

gnutls.certificate_allocate_credentials(

587

ctypes.byref(self._c_object))

588

self.type = gnutls.CRD_CERTIFICATE

589

590

def __del__(self):

591

gnutls.certificate_free_credentials(self._c_object)

592

593

class ClientSession(object):

594

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

595

self._c_object = gnutls.session_t()

596

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

597

gnutls.set_default_priority(self._c_object)

598

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

599

gnutls.handshake_set_private_extensions(self._c_object,

600

True)

601

self.socket = socket

602

if credentials is None:

603

credentials = gnutls.Credentials()

604

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

605

ctypes.cast(credentials._c_object,

606

ctypes.c_void_p))

607

self.credentials = credentials

608

609

def __del__(self):

610

gnutls.deinit(self._c_object)

611

612

def handshake(self):

613

return gnutls.handshake(self._c_object)

614

615

def send(self, data):

616

data = bytes(data)

617

data_len = len(data)

618

while data_len > 0:

619

data_len -= gnutls.record_send(self._c_object,

620

data[-data_len:],

621

data_len)

622

623

def bye(self):

624

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

625

626

# Error handling functions

627

def _error_code(result):

628

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

629

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

630

if result >= 0:

631

return result

632

if result == gnutls.E_NO_CERTIFICATE_FOUND:

633

raise gnutls.CertificateSecurityError(code=result)

634

raise gnutls.Error(code=result)

635

636

def _retry_on_error(result, func, arguments):

637

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

638

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

639

while result < 0:

640

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

641

return _error_code(result)

642

result = func(*arguments)

643

return result

644

645

# Unless otherwise indicated, the function declarations below are

646

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

647

648

# Functions

649

priority_set_direct = _library.gnutls_priority_set_direct

650

priority_set_direct.argtypes = [session_t, ctypes.c_char_p,

651

ctypes.POINTER(ctypes.c_char_p)]

652

priority_set_direct.restype = _error_code

653

654

init = _library.gnutls_init

655

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

656

init.restype = _error_code

657

658

set_default_priority = _library.gnutls_set_default_priority

659

set_default_priority.argtypes = [session_t]

660

set_default_priority.restype = _error_code

661

662

record_send = _library.gnutls_record_send

663

record_send.argtypes = [session_t, ctypes.c_void_p,

664

ctypes.c_size_t]

665

record_send.restype = ctypes.c_ssize_t

666

record_send.errcheck = _retry_on_error

667

668

certificate_allocate_credentials = (

669

_library.gnutls_certificate_allocate_credentials)

670

certificate_allocate_credentials.argtypes = [

671

ctypes.POINTER(certificate_credentials_t)]

672

certificate_allocate_credentials.restype = _error_code

673

674

certificate_free_credentials = (

675

_library.gnutls_certificate_free_credentials)

676

certificate_free_credentials.argtypes = [

677

certificate_credentials_t]

678

certificate_free_credentials.restype = None

679

680

handshake_set_private_extensions = (

681

_library.gnutls_handshake_set_private_extensions)

682

handshake_set_private_extensions.argtypes = [session_t,

683

ctypes.c_int]

684

handshake_set_private_extensions.restype = None

685

686

credentials_set = _library.gnutls_credentials_set

687

credentials_set.argtypes = [session_t, credentials_type_t,

688

ctypes.c_void_p]

689

credentials_set.restype = _error_code

690

691

strerror = _library.gnutls_strerror

692

strerror.argtypes = [ctypes.c_int]

693

strerror.restype = ctypes.c_char_p

694

695

certificate_type_get = _library.gnutls_certificate_type_get

696

certificate_type_get.argtypes = [session_t]

697

certificate_type_get.restype = _error_code

698

699

certificate_get_peers = _library.gnutls_certificate_get_peers

700

certificate_get_peers.argtypes = [session_t,

701

ctypes.POINTER(ctypes.c_uint)]

702

certificate_get_peers.restype = ctypes.POINTER(datum_t)

703

704

global_set_log_level = _library.gnutls_global_set_log_level

705

global_set_log_level.argtypes = [ctypes.c_int]

706

global_set_log_level.restype = None

707

708

global_set_log_function = _library.gnutls_global_set_log_function

709

global_set_log_function.argtypes = [log_func]

710

global_set_log_function.restype = None

711

712

deinit = _library.gnutls_deinit

713

deinit.argtypes = [session_t]

714

deinit.restype = None

715

716

handshake = _library.gnutls_handshake

717

handshake.argtypes = [session_t]

718

handshake.restype = _error_code

719

handshake.errcheck = _retry_on_error

720

721

transport_set_ptr = _library.gnutls_transport_set_ptr

722

transport_set_ptr.argtypes = [session_t, transport_ptr_t]

723

transport_set_ptr.restype = None

724

725

bye = _library.gnutls_bye

726

bye.argtypes = [session_t, close_request_t]

727

bye.restype = _error_code

728

bye.errcheck = _retry_on_error

729

730

check_version = _library.gnutls_check_version

731

check_version.argtypes = [ctypes.c_char_p]

732

check_version.restype = ctypes.c_char_p

733

734

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

735

736

openpgp_crt_init = _library.gnutls_openpgp_crt_init

737

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

738

openpgp_crt_init.restype = _error_code

739

740

openpgp_crt_import = _library.gnutls_openpgp_crt_import

741

openpgp_crt_import.argtypes = [openpgp_crt_t,

742

ctypes.POINTER(datum_t),

743

openpgp_crt_fmt_t]

744

openpgp_crt_import.restype = _error_code

745

746

openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self

747

openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,

748

ctypes.POINTER(ctypes.c_uint)]

749

openpgp_crt_verify_self.restype = _error_code

750

751

openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit

752

openpgp_crt_deinit.argtypes = [openpgp_crt_t]

753

openpgp_crt_deinit.restype = None

754

755

openpgp_crt_get_fingerprint = (

756

_library.gnutls_openpgp_crt_get_fingerprint)

757

openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,

758

ctypes.c_void_p,

759

ctypes.POINTER(

760

ctypes.c_size_t)]

761

openpgp_crt_get_fingerprint.restype = _error_code

762

763

# Remove non-public functions

764

del _error_code, _retry_on_error

765

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

766

gnutls = GnuTLS()

767

768

769

def call_pipe(connection, # : multiprocessing.Connection

770

func, *args, **kwargs):

771

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

772

773

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

774

return value on the provided multiprocessing.Connection.

775

"""

776

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

777

connection.close()

406

778

407

779

408

780

class Client(object):

409

781

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

410

782

411

783

Attributes:

412

784

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

413

785

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

415

787

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

416

788

to see if the client lives.

417

789

'None' if no process is running.

418

checker_callback_tag: a gobject event source tag, or None

790

checker_callback_tag: a GLib event source tag, or None

419

791

checker_command: string; External command which is run to check

420

792

if client lives. %() expansions are done at

421

793

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

422

794

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

423

checker_initiator_tag: a gobject event source tag, or None

795

checker_initiator_tag: a GLib event source tag, or None

424

796

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

425

797

client_structure: Object describing what attributes a client has

426

798

and is used for storing the client at exit

427

799

current_checker_command: string; current running checker_command

428

disable_initiator_tag: a gobject event source tag, or None

800

disable_initiator_tag: a GLib event source tag, or None

429

801

enabled: bool()

430

802

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

431

803

uniquely identify the client

436

808

last_checker_status: integer between 0 and 255 reflecting exit

437

809

status of last checker. -1 reflects crashed

438

810

checker, -2 means no checker completed yet.

811

last_checker_signal: The signal which killed the last checker, if

812

last_checker_status is -1

439

813

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

440

814

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

441

815

D-Bus identifiers

448

822

disabled, or None

449

823

server_settings: The server_settings dict from main()

450

824

"""

451

825

452

826

runtime_expansions = ("approval_delay", "approval_duration",

453

827

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

454

828

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

455

829

"last_approval_request", "last_checked_ok",

456

830

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

457

client_defaults = { "timeout": "PT5M",

458

"extended_timeout": "PT15M",

459

"interval": "PT2M",

460

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

461

"host": "",

462

"approval_delay": "PT0S",

463

"approval_duration": "PT1S",

464

"approved_by_default": "True",

465

"enabled": "True",

466

}

467

468

def timeout_milliseconds(self):

469

"Return the 'timeout' attribute in milliseconds"

470

return timedelta_to_milliseconds(self.timeout)

471

472

def extended_timeout_milliseconds(self):

473

"Return the 'extended_timeout' attribute in milliseconds"

474

return timedelta_to_milliseconds(self.extended_timeout)

475

476

def interval_milliseconds(self):

477

"Return the 'interval' attribute in milliseconds"

478

return timedelta_to_milliseconds(self.interval)

479

480

def approval_delay_milliseconds(self):

481

return timedelta_to_milliseconds(self.approval_delay)

482

831

client_defaults = {

832

"timeout": "PT5M",

833

"extended_timeout": "PT15M",

834

"interval": "PT2M",

835

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

836

"host": "",

837

"approval_delay": "PT0S",

838

"approval_duration": "PT1S",

839

"approved_by_default": "True",

840

"enabled": "True",

841

}

842

483

843

@staticmethod

484

844

def config_parser(config):

485

845

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

492

852

for client_name in config.sections():

493

853

section = dict(config.items(client_name))

494

854

client = settings[client_name] = {}

495

855

496

856

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

497

857

# Reformat values from string types to Python types

498

858

client["approved_by_default"] = config.getboolean(

499

859

client_name, "approved_by_default")

500

860

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

501

861

"enabled")

502

862

863

# Uppercase and remove spaces from fingerprint for later

864

# comparison purposes with return value from the

865

# fingerprint() function

503

866

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

504

867

.replace(" ", ""))

505

868

if "secret" in section:

506

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

869

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

870

.encode("utf-8"),

871

"base64")

507

872

elif "secfile" in section:

508

873

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

509

874

(section["secfile"])),

510

875

"rb") as secfile:

511

876

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

512

877

else:

513

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

878

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

514

879

.format(section))

515

880

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

516

881

client["extended_timeout"] = string_to_delta(

524

889

client["last_approval_request"] = None

525

890

client["last_checked_ok"] = None

526

891

client["last_checker_status"] = -2

527

892

528

893

return settings

529

530

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

894

895

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

531

896

self.name = name

532

897

if server_settings is None:

533

898

server_settings = {}

534

899

self.server_settings = server_settings

535

900

# adding all client settings

536

for setting, value in settings.iteritems():

901

for setting, value in settings.items():

537

902

setattr(self, setting, value)

538

903

539

904

if self.enabled:

540

905

if not hasattr(self, "last_enabled"):

541

906

self.last_enabled = datetime.datetime.utcnow()

545

910

else:

546

911

self.last_enabled = None

547

912

self.expires = None

548

913

549

914

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

550

# Uppercase and remove spaces from fingerprint for later

551

# comparison purposes with return value from the fingerprint()

552

# function

553

915

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

554

916

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

555

917

datetime.datetime.utcnow())

556

918

557

919

# attributes specific for this server instance

558

920

self.checker = None

559

921

self.checker_initiator_tag = None

562

924

self.current_checker_command = None

563

925

self.approved = None

564

926

self.approvals_pending = 0

565

self.changedstate = (multiprocessing_manager

566

.Condition(multiprocessing_manager

567

.Lock()))

568

self.client_structure = [attr for attr in

569

self.__dict__.iterkeys()

927

self.changedstate = multiprocessing_manager.Condition(

928

multiprocessing_manager.Lock())

929

self.client_structure = [attr

930

for attr in self.__dict__.keys()

570

931

if not attr.startswith("_")]

571

932

self.client_structure.append("client_structure")

572

573

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

574

lambda obj:

575

isinstance(obj,

576

property)):

933

934

for name, t in inspect.getmembers(

935

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

577

936

if not name.startswith("_"):

578

937

self.client_structure.append(name)

579

938

580

939

# Send notice to process children that client state has changed

581

940

def send_changedstate(self):

582

941

with self.changedstate:

583

942

self.changedstate.notify_all()

584

943

585

944

def enable(self):

586

945

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

587

946

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

592

951

self.last_enabled = datetime.datetime.utcnow()

593

952

self.init_checker()

594

953

self.send_changedstate()

595

954

596

955

def disable(self, quiet=True):

597

956

"""Disable this client."""

598

957

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

600

959

if not quiet:

601

960

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

602

961

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

603

gobject.source_remove(self.disable_initiator_tag)

962

GLib.source_remove(self.disable_initiator_tag)

604

963

self.disable_initiator_tag = None

605

964

self.expires = None

606

965

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

607

gobject.source_remove(self.checker_initiator_tag)

966

GLib.source_remove(self.checker_initiator_tag)

608

967

self.checker_initiator_tag = None

609

968

self.stop_checker()

610

969

self.enabled = False

611

970

if not quiet:

612

971

self.send_changedstate()

613

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

972

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

614

973

return False

615

974

616

975

def __del__(self):

617

976

self.disable()

618

977

619

978

def init_checker(self):

620

979

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

621

980

# and every interval from then on.

622

981

if self.checker_initiator_tag is not None:

623

gobject.source_remove(self.checker_initiator_tag)

624

self.checker_initiator_tag = (gobject.timeout_add

625

(self.interval_milliseconds(),

626

self.start_checker))

982

GLib.source_remove(self.checker_initiator_tag)

983

self.checker_initiator_tag = GLib.timeout_add(

984

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

985

self.start_checker)

627

986

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

628

987

if self.disable_initiator_tag is not None:

629

gobject.source_remove(self.disable_initiator_tag)

630

self.disable_initiator_tag = (gobject.timeout_add

631

(self.timeout_milliseconds(),

632

self.disable))

988

GLib.source_remove(self.disable_initiator_tag)

989

self.disable_initiator_tag = GLib.timeout_add(

990

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

633

991

# Also start a new checker *right now*.

634

992

self.start_checker()

635

636

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

993

994

def checker_callback(self, source, condition, connection,

995

command):

637

996

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

638

997

self.checker_callback_tag = None

639

998

self.checker = None

640

if os.WIFEXITED(condition):

641

self.last_checker_status = os.WEXITSTATUS(condition)

999

# Read return code from connection (see call_pipe)

1000

returncode = connection.recv()

1001

connection.close()

1002

1003

if returncode >= 0:

1004

self.last_checker_status = returncode

1005

self.last_checker_signal = None

642

1006

if self.last_checker_status == 0:

643

1007

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

644

1008

vars(self))

645

1009

self.checked_ok()

646

1010

else:

647

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

648

vars(self))

1011

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

649

1012

else:

650

1013

self.last_checker_status = -1

1014

self.last_checker_signal = -returncode

651

1015

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

652

1016

vars(self))

653

1017

return False

1018

654

1019

def checked_ok(self):

655

1020

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

656

1021

self.last_checked_ok = datetime.datetime.utcnow()

657

1022

self.last_checker_status = 0

1023

self.last_checker_signal = None

658

1024

self.bump_timeout()

659

1025

660

1026

def bump_timeout(self, timeout=None):

661

1027

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

662

1028

if timeout is None:

663

1029

timeout = self.timeout

664

1030

if self.disable_initiator_tag is not None:

665

gobject.source_remove(self.disable_initiator_tag)

1031

GLib.source_remove(self.disable_initiator_tag)

666

1032

self.disable_initiator_tag = None

667

1033

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

668

self.disable_initiator_tag = (gobject.timeout_add

669

(timedelta_to_milliseconds

670

(timeout), self.disable))

1034

self.disable_initiator_tag = GLib.timeout_add(

1035

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

671

1036

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

672

1037

673

1038

def need_approval(self):

674

1039

self.last_approval_request = datetime.datetime.utcnow()

675

1040

676

1041

def start_checker(self):

677

1042

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

678

1043

679

1044

If a checker already exists, leave it running and do

680

1045

nothing."""

681

1046

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

686

1051

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

687

1052

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

688

1053

# should be.

689

690

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

691

try:

692

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

693

except AttributeError:

694

pass

695

except OSError as error:

696

if error.errno != errno.ECHILD:

697

raise

698

else:

699

if pid:

700

logger.warning("Checker was a zombie")

701

gobject.source_remove(self.checker_callback_tag)

702

self.checker_callback(pid, status,

703

self.current_checker_command)

1054

1055

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

1056

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

1057

self.checker.join()

1058

self.checker = None

704

1059

# Start a new checker if needed

705

1060

if self.checker is None:

706

1061

# Escape attributes for the shell

707

escaped_attrs = dict(

708

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

709

for attr in

710

self.runtime_expansions)

1062

escaped_attrs = {

1063

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

1064

for attr in self.runtime_expansions}

711

1065

try:

712

1066

command = self.checker_command % escaped_attrs

713

1067

except TypeError as error:

714

1068

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

715

self.checker_command, exc_info=error)

716

return True # Try again later

1069

self.checker_command,

1070

exc_info=error)

1071

return True # Try again later

717

1072

self.current_checker_command = command

718

try:

719

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

720

command, self.name)

721

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

722

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

723

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

724

# always replaced by /dev/null.)

725

# The exception is when not debugging but nevertheless

726

# running in the foreground; use the previously

727

# created wnull.

728

popen_args = {}

729

if (not self.server_settings["debug"]

730

and self.server_settings["foreground"]):

731

popen_args.update({"stdout": wnull,

732

"stderr": wnull })

733

self.checker = subprocess.Popen(command,

734

close_fds=True,

735

shell=True, cwd="/",

736

**popen_args)

737

except OSError as error:

738

logger.error("Failed to start subprocess",

739

exc_info=error)

740

return True

741

self.checker_callback_tag = (gobject.child_watch_add

742

(self.checker.pid,

743

self.checker_callback,

744

data=command))

745

# The checker may have completed before the gobject

746

# watch was added. Check for this.

747

try:

748

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

749

except OSError as error:

750

if error.errno == errno.ECHILD:

751

# This should never happen

752

logger.error("Child process vanished",

753

exc_info=error)

754

return True

755

raise

756

if pid:

757

gobject.source_remove(self.checker_callback_tag)

758

self.checker_callback(pid, status, command)

759

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

1073

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

1074

self.name)

1075

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

1076

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

1077

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

1078

# always replaced by /dev/null.)

1079

# The exception is when not debugging but nevertheless

1080

# running in the foreground; use the previously

1081

# created wnull.

1082

popen_args = {"close_fds": True,

1083

"shell": True,

1084

"cwd": "/"}

1085

if (not self.server_settings["debug"]

1086

and self.server_settings["foreground"]):

1087

popen_args.update({"stdout": wnull,

1088

"stderr": wnull})

1089

pipe = multiprocessing.Pipe(duplex=False)

1090

self.checker = multiprocessing.Process(

1091

target=call_pipe,

1092

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

1093

kwargs=popen_args)

1094

self.checker.start()

1095

self.checker_callback_tag = GLib.io_add_watch(

1096

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

1097

self.checker_callback, pipe[0], command)

1098

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

760

1099

return True

761

1100

762

1101

def stop_checker(self):

763

1102

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

764

1103

if self.checker_callback_tag:

765

gobject.source_remove(self.checker_callback_tag)

1104

GLib.source_remove(self.checker_callback_tag)

766

1105

self.checker_callback_tag = None

767

1106

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

768

1107

return

769

1108

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

770

try:

771

self.checker.terminate()

772

#time.sleep(0.5)

773

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

774

# self.checker.kill()

775

except OSError as error:

776

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

777

raise

1109

self.checker.terminate()

778

1110

self.checker = None

779

1111

780

1112

781

def dbus_service_property(dbus_interface, signature="v",

782

access="readwrite", byte_arrays=False):

1113

def dbus_service_property(dbus_interface,

1114

signature="v",

1115

access="readwrite",

1116

byte_arrays=False):

783

1117

"""Decorators for marking methods of a DBusObjectWithProperties to

784

1118

become properties on the D-Bus.

785

1119

786

1120

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

787

1121

and with one argument by "Set".

788

1122

789

1123

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

790

1124

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

791

1125

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

794

1128

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

795

1129

if byte_arrays and signature != "ay":

796

1130

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

797

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

1131

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

1132

798

1133

def decorator(func):

799

1134

func._dbus_is_property = True

800

1135

func._dbus_interface = dbus_interface

803

1138

func._dbus_name = func.__name__

804

1139

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

805

1140

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

806

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

1141

func._dbus_get_args_options = {'byte_arrays': byte_arrays}

807

1142

return func

1143

808

1144

return decorator

809

1145

810

1146

811

1147

def dbus_interface_annotations(dbus_interface):

812

1148

"""Decorator for marking functions returning interface annotations

813

1149

814

1150

Usage:

815

1151

816

1152

@dbus_interface_annotations("org.example.Interface")

817

1153

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

818

1154

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

819

1155

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

820

1156

"false"}

821

1157

"""

1158

822

1159

def decorator(func):

823

1160

func._dbus_is_interface = True

824

1161

func._dbus_interface = dbus_interface

825

1162

func._dbus_name = dbus_interface

826

1163

return func

1164

827

1165

return decorator

828

1166

829

1167

830

1168

def dbus_annotations(annotations):

831

1169

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

832

1170

Usage:

833

1171

1172

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

1173

"org.freedesktop.DBus.Property."

1174

"EmitsChangedSignal": "false"})

834

1175

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

835

1176

access="r")

836

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

837

"org.freedesktop.DBus.Property."

838

"EmitsChangedSignal": "false"})

839

1177

def Property_dbus_property(self):

840

1178

return dbus.Boolean(False)

1179

1180

See also the DBusObjectWithAnnotations class.

841

1181

"""

1182

842

1183

def decorator(func):

843

1184

func._dbus_annotations = annotations

844

1185

return func

1186

845

1187

return decorator

846

1188

847

1189

848

1190

class DBusPropertyException(dbus.exceptions.DBusException):

849

1191

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

850

1192

"""

851

def __unicode__(self):

852

return unicode(str(self))

1193

pass

853

1194

854

1195

855

1196

class DBusPropertyAccessException(DBusPropertyException):

864

1205

pass

865

1206

866

1207

867

class DBusObjectWithProperties(dbus.service.Object):

868

"""A D-Bus object with properties.

869

870

Classes inheriting from this can use the dbus_service_property

871

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

872

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

1208

class DBusObjectWithAnnotations(dbus.service.Object):

1209

"""A D-Bus object with annotations.

1210

1211

Classes inheriting from this can use the dbus_annotations

1212

decorator to add annotations to methods or signals.

873

1213

"""

874

1214

875

1215

@staticmethod

876

1216

def _is_dbus_thing(thing):

877

1217

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

878

1218

879

1219

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

880

1220

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

881

1221

"""

882

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

1222

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

883

1223

False)

884

1224

885

1225

def _get_all_dbus_things(self, thing):

886

1226

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

887

1227

"""

888

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

889

name),

1228

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

890

1229

athing.__get__(self))

891

1230

for cls in self.__class__.__mro__

892

1231

for name, athing in

893

inspect.getmembers(cls,

894

self._is_dbus_thing(thing)))

895

1232

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

1233

1234

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1235

out_signature="s",

1236

path_keyword='object_path',

1237

connection_keyword='connection')

1238

def Introspect(self, object_path, connection):

1239

"""Overloading of standard D-Bus method.

1240

1241

Inserts annotation tags on methods and signals.

1242

"""

1243

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

1244

connection)

1245

try:

1246

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

1247

1248

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

1249

# Add annotation tags

1250

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

1251

for tag in if_tag.getElementsByTagName(typ):

1252

annots = dict()

1253

for name, prop in (self.

1254

_get_all_dbus_things(typ)):

1255

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

1256

and prop._dbus_interface

1257

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

1258

annots.update(getattr(

1259

prop, "_dbus_annotations", {}))

1260

for name, value in annots.items():

1261

ann_tag = document.createElement(

1262

"annotation")

1263

ann_tag.setAttribute("name", name)

1264

ann_tag.setAttribute("value", value)

1265

tag.appendChild(ann_tag)

1266

# Add interface annotation tags

1267

for annotation, value in dict(

1268

itertools.chain.from_iterable(

1269

annotations().items()

1270

for name, annotations

1271

in self._get_all_dbus_things("interface")

1272

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

1273

)).items():

1274

ann_tag = document.createElement("annotation")

1275

ann_tag.setAttribute("name", annotation)

1276

ann_tag.setAttribute("value", value)

1277

if_tag.appendChild(ann_tag)

1278

# Fix argument name for the Introspect method itself

1279

if (if_tag.getAttribute("name")

1280

== dbus.INTROSPECTABLE_IFACE):

1281

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

1282

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

1283

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

1284

if (arg.getAttribute("direction")

1285

== "out"):

1286

arg.setAttribute("name",

1287

"xml_data")

1288

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

1289

document.unlink()

1290

except (AttributeError, xml.dom.DOMException,

1291

xml.parsers.expat.ExpatError) as error:

1292

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

1293

exc_info=error)

1294

return xmlstring

1295

1296

1297

class DBusObjectWithProperties(DBusObjectWithAnnotations):

1298

"""A D-Bus object with properties.

1299

1300

Classes inheriting from this can use the dbus_service_property

1301

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

1302

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

1303

"""

1304

896

1305

def _get_dbus_property(self, interface_name, property_name):

897

1306

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

898

1307

property with the specified name and interface.

899

1308

"""

900

for cls in self.__class__.__mro__:

901

for name, value in (inspect.getmembers

902

(cls,

903

self._is_dbus_thing("property"))):

1309

for cls in self.__class__.__mro__:

1310

for name, value in inspect.getmembers(

1311

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

904

1312

if (value._dbus_name == property_name

905

1313

and value._dbus_interface == interface_name):

906

1314

return value.__get__(self)

907

1315

908

1316

# No such property

909

raise DBusPropertyNotFound(self.dbus_object_path + ":"

910

+ interface_name + "."

911

+ property_name)

912

913

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

1317

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

1318

self.dbus_object_path, interface_name, property_name))

1319

1320

@classmethod

1321

def _get_all_interface_names(cls):

1322

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

1323

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

1324

"_dbus_interface", None)

1325

for x in (inspect.getmro(cls))

1326

for attr in dir(x))

1327

if name is not None)

1328

1329

@dbus.service.method(dbus.PROPERTIES_IFACE,

1330

in_signature="ss",

914

1331

out_signature="v")

915

1332

def Get(self, interface_name, property_name):

916

1333

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

922

1339

if not hasattr(value, "variant_level"):

923

1340

return value

924

1341

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

925

1342

926

1343

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

927

1344

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

928

1345

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

935

1352

# signatures other than "ay".

936

1353

if prop._dbus_signature != "ay":

937

1354

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

938

"'ay' signature {0!r}"

1355

"'ay' signature {!r}"

939

1356

.format(prop._dbus_signature))

940

1357

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

941

1358

for byte in value))

942

1359

prop(value)

943

944

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

1360

1361

@dbus.service.method(dbus.PROPERTIES_IFACE,

1362

in_signature="s",

945

1363

out_signature="a{sv}")

946

1364

def GetAll(self, interface_name):

947

1365

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

948

1366

standard.

949

1367

950

1368

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

951

1369

"""

952

1370

properties = {}

962

1380

if not hasattr(value, "variant_level"):

963

1381

properties[name] = value

964

1382

continue

965

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

966

value.variant_level+1)

1383

properties[name] = type(value)(

1384

value, variant_level=value.variant_level + 1)

967

1385

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

968

1386

1387

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

1388

def PropertiesChanged(self, interface_name, changed_properties,

1389

invalidated_properties):

1390

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

1391

standard.

1392

"""

1393

pass

1394

969

1395

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

970

1396

out_signature="s",

971

1397

path_keyword='object_path',

972

1398

connection_keyword='connection')

973

1399

def Introspect(self, object_path, connection):

974

1400

"""Overloading of standard D-Bus method.

975

1401

976

1402

Inserts property tags and interface annotation tags.

977

1403

"""

978

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

979

connection)

1404

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1405

object_path,

1406

connection)

980

1407

try:

981

1408

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

1409

982

1410

def make_tag(document, name, prop):

983

1411

e = document.createElement("property")

984

1412

e.setAttribute("name", name)

985

1413

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

986

1414

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

987

1415

return e

1416

988

1417

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

989

1418

# Add property tags

990

1419

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

993

1422

if prop._dbus_interface

994

1423

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

995

1424

if_tag.appendChild(tag)

996

# Add annotation tags

997

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

998

for tag in if_tag.getElementsByTagName(typ):

999

annots = dict()

1000

for name, prop in (self.

1001

_get_all_dbus_things(typ)):

1002

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

1003

and prop._dbus_interface

1004

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

1005

annots.update(getattr

1006

(prop,

1007

"_dbus_annotations",

1008

{}))

1009

for name, value in annots.iteritems():

1010

ann_tag = document.createElement(

1011

"annotation")

1012

ann_tag.setAttribute("name", name)

1013

ann_tag.setAttribute("value", value)

1014

tag.appendChild(ann_tag)

1015

# Add interface annotation tags

1016

for annotation, value in dict(

1017

itertools.chain.from_iterable(

1018

annotations().iteritems()

1019

for name, annotations in

1020

self._get_all_dbus_things("interface")

1021

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

1022

)).iteritems():

1023

ann_tag = document.createElement("annotation")

1024

ann_tag.setAttribute("name", annotation)

1025

ann_tag.setAttribute("value", value)

1026

if_tag.appendChild(ann_tag)

1425

# Add annotation tags for properties

1426

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

1427

annots = dict()

1428

for name, prop in self._get_all_dbus_things(

1429

"property"):

1430

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

1431

and prop._dbus_interface

1432

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

1433

annots.update(getattr(

1434

prop, "_dbus_annotations", {}))

1435

for name, value in annots.items():

1436

ann_tag = document.createElement(

1437

"annotation")

1438

ann_tag.setAttribute("name", name)

1439

ann_tag.setAttribute("value", value)

1440

tag.appendChild(ann_tag)

1027

1441

# Add the names to the return values for the

1028

1442

# "org.freedesktop.DBus.Properties" methods

1029

1443

if (if_tag.getAttribute("name")

1047

1461

exc_info=error)

1048

1462

return xmlstring

1049

1463

1464

try:

1465

dbus.OBJECT_MANAGER_IFACE

1466

except AttributeError:

1467

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

1468

1469

1470

class DBusObjectWithObjectManager(DBusObjectWithAnnotations):

1471

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

1472

1473

Classes inheriting from this exposes the standard

1474

GetManagedObjects call and the InterfacesAdded and

1475

InterfacesRemoved signals on the standard

1476

"org.freedesktop.DBus.ObjectManager" interface.

1477

1478

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

1479

manually.

1480

"""

1481

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

1482

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

1483

def GetManagedObjects(self):

1484

"""This function must be overridden"""

1485

raise NotImplementedError()

1486

1487

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,

1488

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

1489

def InterfacesAdded(self, object_path, interfaces_and_properties):

1490

pass

1491

1492

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

1493

def InterfacesRemoved(self, object_path, interfaces):

1494

pass

1495

1496

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1497

out_signature="s",

1498

path_keyword='object_path',

1499

connection_keyword='connection')

1500

def Introspect(self, object_path, connection):

1501

"""Overloading of standard D-Bus method.

1502

1503

Override return argument name of GetManagedObjects to be

1504

"objpath_interfaces_and_properties"

1505

"""

1506

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1507

object_path,

1508

connection)

1509

try:

1510

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

1511

1512

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

1513

# Fix argument name for the GetManagedObjects method

1514

if (if_tag.getAttribute("name")

1515

== dbus.OBJECT_MANAGER_IFACE):

1516

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

1517

if (cn.getAttribute("name")

1518

== "GetManagedObjects"):

1519

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

1520

if (arg.getAttribute("direction")

1521

== "out"):

1522

arg.setAttribute(

1523

"name",

1524

"objpath_interfaces"

1525

"_and_properties")

1526

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

1527

document.unlink()

1528

except (AttributeError, xml.dom.DOMException,

1529

xml.parsers.expat.ExpatError) as error:

1530

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

1531

exc_info=error)

1532

return xmlstring

1533

1050

1534

1051

1535

def datetime_to_dbus(dt, variant_level=0):

1052

1536

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

1053

1537

if dt is None:

1054

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

1055

return dbus.String(dt.isoformat(),

1056

variant_level=variant_level)

1538

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

1539

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

1057

1540

1058

1541

1059

1542

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1061

1544

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

1062

1545

interface names according to the "alt_interface_names" mapping.

1063

1546

Usage:

1064

1547

1065

1548

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

1066

1549

"net.example.AlternateInterface"})

1067

1550

class SampleDBusObject(dbus.service.Object):

1068

1551

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

1069

1552

def SampleDBusMethod():

1070

1553

pass

1071

1554

1072

1555

The above "SampleDBusMethod" on "SampleDBusObject" will be

1073

1556

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

1074

1557

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

1075

1558

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

1076

1559

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

1077

1560

1078

1561

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

1079

1562

(from DBusObjectWithProperties) and interfaces (from the

1080

1563

dbus_interface_annotations decorator).

1081

1564

"""

1565

1082

1566

def wrapper(cls):

1083

1567

for orig_interface_name, alt_interface_name in (

1084

alt_interface_names.iteritems()):

1568

alt_interface_names.items()):

1085

1569

attr = {}

1086

1570

interface_names = set()

1087

1571

# Go though all attributes of the class

1089

1573

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

1090

1574

# with the wrong interface name

1091

1575

if (not hasattr(attribute, "_dbus_interface")

1092

or not attribute._dbus_interface

1093

.startswith(orig_interface_name)):

1576

or not attribute._dbus_interface.startswith(

1577

orig_interface_name)):

1094

1578

continue

1095

1579

# Create an alternate D-Bus interface name based on

1096

1580

# the current name

1097

alt_interface = (attribute._dbus_interface

1098

.replace(orig_interface_name,

1099

alt_interface_name))

1581

alt_interface = attribute._dbus_interface.replace(

1582

orig_interface_name, alt_interface_name)

1100

1583

interface_names.add(alt_interface)

1101

1584

# Is this a D-Bus signal?

1102

1585

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

1103

1586

# Extract the original non-method undecorated

1104

1587

# function by black magic

1105

nonmethod_func = (dict(

1588

if sys.version_info.major == 2:

1589

nonmethod_func = (dict(

1106

1590

zip(attribute.func_code.co_freevars,

1107

attribute.__closure__))["func"]

1108

.cell_contents)

1591

attribute.__closure__))

1592

["func"].cell_contents)

1593

else:

1594

nonmethod_func = (dict(

1595

zip(attribute.__code__.co_freevars,

1596

attribute.__closure__))

1597

["func"].cell_contents)

1109

1598

# Create a new, but exactly alike, function

1110

1599

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

1111

1600

# with the alternate D-Bus interface name

1112

new_function = (dbus.service.signal

1113

(alt_interface,

1114

attribute._dbus_signature)

1115

(types.FunctionType(

1116

nonmethod_func.func_code,

1117

nonmethod_func.func_globals,

1118

nonmethod_func.func_name,

1119

nonmethod_func.func_defaults,

1120

nonmethod_func.func_closure)))

1601

new_function = copy_function(nonmethod_func)

1602

new_function = (dbus.service.signal(

1603

alt_interface,

1604

attribute._dbus_signature)(new_function))

1121

1605

# Copy annotations, if any

1122

1606

try:

1123

new_function._dbus_annotations = (

1124

dict(attribute._dbus_annotations))

1607

new_function._dbus_annotations = dict(

1608

attribute._dbus_annotations)

1125

1609

except AttributeError:

1126

1610

pass

1611

1127

1612

# Define a creator of a function to call both the

1128

1613

# original and alternate functions, so both the

1129

1614

# original and alternate signals gets sent when

1132

1617

"""This function is a scope container to pass

1133

1618

func1 and func2 to the "call_both" function

1134

1619

outside of its arguments"""

1620

1621

@functools.wraps(func2)

1135

1622

def call_both(*args, **kwargs):

1136

1623

"""This function will emit two D-Bus

1137

1624

signals by calling func1 and func2"""

1138

1625

func1(*args, **kwargs)

1139

1626

func2(*args, **kwargs)

1627

# Make wrapper function look like a D-Bus

1628

# signal

1629

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

1630

if name.startswith("_dbus_"):

1631

setattr(call_both, name, attr)

1632

1140

1633

return call_both

1141

1634

# Create the "call_both" function and add it to

1142

1635

# the class

1147

1640

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

1148

1641

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

1149

1642

# to the class.

1150

attr[attrname] = (dbus.service.method

1151

(alt_interface,

1152

attribute._dbus_in_signature,

1153

attribute._dbus_out_signature)

1154

(types.FunctionType

1155

(attribute.func_code,

1156

attribute.func_globals,

1157

attribute.func_name,

1158

attribute.func_defaults,

1159

attribute.func_closure)))

1643

attr[attrname] = (

1644

dbus.service.method(

1645

alt_interface,

1646

attribute._dbus_in_signature,

1647

attribute._dbus_out_signature)

1648

(copy_function(attribute)))

1160

1649

# Copy annotations, if any

1161

1650

try:

1162

attr[attrname]._dbus_annotations = (

1163

dict(attribute._dbus_annotations))

1651

attr[attrname]._dbus_annotations = dict(

1652

attribute._dbus_annotations)

1164

1653

except AttributeError:

1165

1654

pass

1166

1655

# Is this a D-Bus property?

1169

1658

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

1170

1659

# property with the alternate D-Bus interface

1171

1660

# name. Add it to the class.

1172

attr[attrname] = (dbus_service_property

1173

(alt_interface,

1174

attribute._dbus_signature,

1175

attribute._dbus_access,

1176

attribute

1177

._dbus_get_args_options

1178

["byte_arrays"])

1179

(types.FunctionType

1180

(attribute.func_code,

1181

attribute.func_globals,

1182

attribute.func_name,

1183

attribute.func_defaults,

1184

attribute.func_closure)))

1661

attr[attrname] = (dbus_service_property(

1662

alt_interface, attribute._dbus_signature,

1663

attribute._dbus_access,

1664

attribute._dbus_get_args_options

1665

["byte_arrays"])

1666

(copy_function(attribute)))

1185

1667

# Copy annotations, if any

1186

1668

try:

1187

attr[attrname]._dbus_annotations = (

1188

dict(attribute._dbus_annotations))

1669

attr[attrname]._dbus_annotations = dict(

1670

attribute._dbus_annotations)

1189

1671

except AttributeError:

1190

1672

pass

1191

1673

# Is this a D-Bus interface?

1194

1676

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

1195

1677

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

1196

1678

# to the class.

1197

attr[attrname] = (dbus_interface_annotations

1198

(alt_interface)

1199

(types.FunctionType

1200

(attribute.func_code,

1201

attribute.func_globals,

1202

attribute.func_name,

1203

attribute.func_defaults,

1204

attribute.func_closure)))

1679

attr[attrname] = (

1680

dbus_interface_annotations(alt_interface)

1681

(copy_function(attribute)))

1205

1682

if deprecate:

1206

1683

# Deprecate all alternate interfaces

1207

iname="_AlternateDBusNames_interface_annotation{0}"

1684

iname = "_AlternateDBusNames_interface_annotation{}"

1208

1685

for interface_name in interface_names:

1686

1209

1687

@dbus_interface_annotations(interface_name)

1210

1688

def func(self):

1211

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

1212

"true" }

1689

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

1690

"true"}

1213

1691

# Find an unused name

1214

1692

for aname in (iname.format(i)

1215

1693

for i in itertools.count()):

1219

1697

if interface_names:

1220

1698

# Replace the class with a new subclass of it with

1221

1699

# methods, signals, etc. as created above.

1222

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

1223

(cls,), attr)

1700

if sys.version_info.major == 2:

1701

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

1702

(cls, ), attr)

1703

else:

1704

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

1705

(cls, ), attr)

1224

1706

return cls

1707

1225

1708

return wrapper

1226

1709

1227

1710

1228

1711

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

1229

"se.bsnet.fukt.Mandos"})

1712

"se.bsnet.fukt.Mandos"})

1230

1713

class ClientDBus(Client, DBusObjectWithProperties):

1231

1714

"""A Client class using D-Bus

1232

1715

1233

1716

Attributes:

1234

1717

dbus_object_path: dbus.ObjectPath

1235

1718

bus: dbus.SystemBus()

1236

1719

"""

1237

1720

1238

1721

runtime_expansions = (Client.runtime_expansions

1239

+ ("dbus_object_path",))

1240

1722

+ ("dbus_object_path", ))

1723

1724

_interface = "se.recompile.Mandos.Client"

1725

1241

1726

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

1242

1243

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

1727

1728

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

1244

1729

self.bus = bus

1245

1730

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

1246

1731

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

1247

1732

# the D-Bus

1248

client_object_name = unicode(self.name).translate(

1733

client_object_name = str(self.name).translate(

1249

1734

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

1250

1735

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

1251

self.dbus_object_path = (dbus.ObjectPath

1252

("/clients/" + client_object_name))

1736

self.dbus_object_path = dbus.ObjectPath(

1737

"/clients/" + client_object_name)

1253

1738

DBusObjectWithProperties.__init__(self, self.bus,

1254

1739

self.dbus_object_path)

1255

1256

def notifychangeproperty(transform_func,

1257

dbus_name, type_func=lambda x: x,

1258

variant_level=1):

1740

1741

def notifychangeproperty(transform_func, dbus_name,

1742

type_func=lambda x: x,

1743

variant_level=1,

1744

invalidate_only=False,

1745

_interface=_interface):

1259

1746

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

1260

1747

its changes to DBus.

1261

1748

1262

1749

transform_fun: Function that takes a value and a variant_level

1263

1750

and transforms it to a D-Bus type.

1264

1751

dbus_name: D-Bus name of the variable

1266

1753

to the D-Bus. Default: no transform

1267

1754

variant_level: D-Bus variant level. Default: 1

1268

1755

"""

1269

attrname = "_{0}".format(dbus_name)

1756

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

1757

1270

1758

def setter(self, value):

1271

1759

if hasattr(self, "dbus_object_path"):

1272

1760

if (not hasattr(self, attrname) or

1273

1761

type_func(getattr(self, attrname, None))

1274

1762

!= type_func(value)):

1275

dbus_value = transform_func(type_func(value),

1276

variant_level

1277

=variant_level)

1278

self.PropertyChanged(dbus.String(dbus_name),

1279

dbus_value)

1763

if invalidate_only:

1764

self.PropertiesChanged(

1765

_interface, dbus.Dictionary(),

1766

dbus.Array((dbus_name, )))

1767

else:

1768

dbus_value = transform_func(

1769

type_func(value),

1770

variant_level=variant_level)

1771

self.PropertyChanged(dbus.String(dbus_name),

1772

dbus_value)

1773

self.PropertiesChanged(

1774

_interface,

1775

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

1776

dbus_value}),

1777

dbus.Array())

1280

1778

setattr(self, attrname, value)

1281

1779

1282

1780

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

1283

1781

1284

1782

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1285

1783

approvals_pending = notifychangeproperty(dbus.Boolean,

1286

1784

"ApprovalPending",

1287

type_func = bool)

1785

type_func=bool)

1288

1786

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

1289

1787

last_enabled = notifychangeproperty(datetime_to_dbus,

1290

1788

"LastEnabled")

1291

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

1292

type_func = lambda checker:

1293

checker is not None)

1789

checker = notifychangeproperty(

1790

dbus.Boolean, "CheckerRunning",

1791

type_func=lambda checker: checker is not None)

1294

1792

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1295

1793

"LastCheckedOK")

1296

1794

last_checker_status = notifychangeproperty(dbus.Int16,

1299

1797

datetime_to_dbus, "LastApprovalRequest")

1300

1798

approved_by_default = notifychangeproperty(dbus.Boolean,

1301

1799

"ApprovedByDefault")

1302

approval_delay = notifychangeproperty(dbus.UInt64,

1303

"ApprovalDelay",

1304

type_func =

1305

timedelta_to_milliseconds)

1800

approval_delay = notifychangeproperty(

1801

dbus.UInt64, "ApprovalDelay",

1802

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

1306

1803

approval_duration = notifychangeproperty(

1307

1804

dbus.UInt64, "ApprovalDuration",

1308

type_func = timedelta_to_milliseconds)

1805

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

1309

1806

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

1310

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

1311

type_func =

1312

timedelta_to_milliseconds)

1807

timeout = notifychangeproperty(

1808

dbus.UInt64, "Timeout",

1809

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

1313

1810

extended_timeout = notifychangeproperty(

1314

1811

dbus.UInt64, "ExtendedTimeout",

1315

type_func = timedelta_to_milliseconds)

1316

interval = notifychangeproperty(dbus.UInt64,

1317

"Interval",

1318

type_func =

1319

timedelta_to_milliseconds)

1812

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

1813

interval = notifychangeproperty(

1814

dbus.UInt64, "Interval",

1815

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

1320

1816

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

1321

1817

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

1818

invalidate_only=True)

1819

1322

1820

del notifychangeproperty

1323

1821

1324

1822

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

1325

1823

try:

1326

1824

self.remove_from_connection()

1329

1827

if hasattr(DBusObjectWithProperties, "__del__"):

1330

1828

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

1331

1829

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

1332

1333

def checker_callback(self, pid, condition, command,

1334

*args, **kwargs):

1335

self.checker_callback_tag = None

1336

self.checker = None

1337

if os.WIFEXITED(condition):

1338

exitstatus = os.WEXITSTATUS(condition)

1830

1831

def checker_callback(self, source, condition,

1832

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

1833

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

1834

connection, command, *args,

1835

**kwargs)

1836

exitstatus = self.last_checker_status

1837

if exitstatus >= 0:

1339

1838

# Emit D-Bus signal

1340

1839

self.CheckerCompleted(dbus.Int16(exitstatus),

1341

dbus.Int64(condition),

1840

# This is specific to GNU libC

1841

dbus.Int64(exitstatus << 8),

1342

1842

dbus.String(command))

1343

1843

else:

1344

1844

# Emit D-Bus signal

1345

1845

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

1346

dbus.Int64(condition),

1846

dbus.Int64(

1847

# This is specific to GNU libC

1848

(exitstatus << 8)

1849

| self.last_checker_signal),

1347

1850

dbus.String(command))

1348

1349

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

1350

*args, **kwargs)

1351

1851

return ret

1852

1352

1853

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

1353

old_checker = self.checker

1354

if self.checker is not None:

1355

old_checker_pid = self.checker.pid

1356

else:

1357

old_checker_pid = None

1854

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

1358

1855

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

1359

1856

# Only if new checker process was started

1360

1857

if (self.checker is not None

1362

1859

# Emit D-Bus signal

1363

1860

self.CheckerStarted(self.current_checker_command)

1364

1861

return r

1365

1862

1366

1863

def _reset_approved(self):

1367

1864

self.approved = None

1368

1865

return False

1369

1866

1370

1867

def approve(self, value=True):

1371

1868

self.approved = value

1372

gobject.timeout_add(timedelta_to_milliseconds

1373

(self.approval_duration),

1374

self._reset_approved)

1869

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

1870

* 1000), self._reset_approved)

1375

1871

self.send_changedstate()

1376

1377

## D-Bus methods, signals & properties

1378

_interface = "se.recompile.Mandos.Client"

1379

1380

## Interfaces

1381

1382

@dbus_interface_annotations(_interface)

1383

def _foo(self):

1384

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

1385

"false"}

1386

1387

## Signals

1388

1872

1873

# D-Bus methods, signals & properties

1874

1875

# Interfaces

1876

1877

# Signals

1878

1389

1879

# CheckerCompleted - signal

1390

1880

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

1391

1881

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

1392

1882

"D-Bus signal"

1393

1883

pass

1394

1884

1395

1885

# CheckerStarted - signal

1396

1886

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

1397

1887

def CheckerStarted(self, command):

1398

1888

"D-Bus signal"

1399

1889

pass

1400

1890

1401

1891

# PropertyChanged - signal

1892

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

1402

1893

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

1403

1894

def PropertyChanged(self, property, value):

1404

1895

"D-Bus signal"

1405

1896

pass

1406

1897

1407

1898

# GotSecret - signal

1408

1899

@dbus.service.signal(_interface)

1409

1900

def GotSecret(self):

1412

1903

server to mandos-client

1413

1904

"""

1414

1905

pass

1415

1906

1416

1907

# Rejected - signal

1417

1908

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

1418

1909

def Rejected(self, reason):

1419

1910

"D-Bus signal"

1420

1911

pass

1421

1912

1422

1913

# NeedApproval - signal

1423

1914

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

1424

1915

def NeedApproval(self, timeout, default):

1425

1916

"D-Bus signal"

1426

1917

return self.need_approval()

1427

1428

## Methods

1429

1918

1919

# Methods

1920

1430

1921

# Approve - method

1431

1922

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

1432

1923

def Approve(self, value):

1433

1924

self.approve(value)

1434

1925

1435

1926

# CheckedOK - method

1436

1927

@dbus.service.method(_interface)

1437

1928

def CheckedOK(self):

1438

1929

self.checked_ok()

1439

1930

1440

1931

# Enable - method

1932

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

1441

1933

@dbus.service.method(_interface)

1442

1934

def Enable(self):

1443

1935

"D-Bus method"

1444

1936

self.enable()

1445

1937

1446

1938

# StartChecker - method

1939

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

1447

1940

@dbus.service.method(_interface)

1448

1941

def StartChecker(self):

1449

1942

"D-Bus method"

1450

1943

self.start_checker()

1451

1944

1452

1945

# Disable - method

1946

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

1453

1947

@dbus.service.method(_interface)

1454

1948

def Disable(self):

1455

1949

"D-Bus method"

1456

1950

self.disable()

1457

1951

1458

1952

# StopChecker - method

1953

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

1459

1954

@dbus.service.method(_interface)

1460

1955

def StopChecker(self):

1461

1956

self.stop_checker()

1462

1463

## Properties

1464

1957

1958

# Properties

1959

1465

1960

# ApprovalPending - property

1466

1961

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

1467

1962

def ApprovalPending_dbus_property(self):

1468

1963

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

1469

1964

1470

1965

# ApprovedByDefault - property

1471

@dbus_service_property(_interface, signature="b",

1966

@dbus_service_property(_interface,

1967

signature="b",

1472

1968

access="readwrite")

1473

1969

def ApprovedByDefault_dbus_property(self, value=None):

1474

1970

if value is None: # get

1475

1971

return dbus.Boolean(self.approved_by_default)

1476

1972

self.approved_by_default = bool(value)

1477

1973

1478

1974

# ApprovalDelay - property

1479

@dbus_service_property(_interface, signature="t",

1975

@dbus_service_property(_interface,

1976

signature="t",

1480

1977

access="readwrite")

1481

1978

def ApprovalDelay_dbus_property(self, value=None):

1482

1979

if value is None: # get

1483

return dbus.UInt64(self.approval_delay_milliseconds())

1980

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

1981

* 1000)

1484

1982

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

1485

1983

1486

1984

# ApprovalDuration - property

1487

@dbus_service_property(_interface, signature="t",

1985

@dbus_service_property(_interface,

1986

signature="t",

1488

1987

access="readwrite")

1489

1988

def ApprovalDuration_dbus_property(self, value=None):

1490

1989

if value is None: # get

1491

return dbus.UInt64(timedelta_to_milliseconds(

1492

self.approval_duration))

1990

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

1991

* 1000)

1493

1992

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

1494

1993

1495

1994

# Name - property

1995

@dbus_annotations(

1996

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

1496

1997

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

1497

1998

def Name_dbus_property(self):

1498

1999

return dbus.String(self.name)

1499

2000

1500

2001

# Fingerprint - property

2002

@dbus_annotations(

2003

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

1501

2004

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

1502

2005

def Fingerprint_dbus_property(self):

1503

2006

return dbus.String(self.fingerprint)

1504

2007

1505

2008

# Host - property

1506

@dbus_service_property(_interface, signature="s",

2009

@dbus_service_property(_interface,

2010

signature="s",

1507

2011

access="readwrite")

1508

2012

def Host_dbus_property(self, value=None):

1509

2013

if value is None: # get

1510

2014

return dbus.String(self.host)

1511

self.host = unicode(value)

1512

2015

self.host = str(value)

2016

1513

2017

# Created - property

2018

@dbus_annotations(

2019

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

1514

2020

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

1515

2021

def Created_dbus_property(self):

1516

2022

return datetime_to_dbus(self.created)

1517

2023

1518

2024

# LastEnabled - property

1519

2025

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

1520

2026

def LastEnabled_dbus_property(self):

1521

2027

return datetime_to_dbus(self.last_enabled)

1522

2028

1523

2029

# Enabled - property

1524

@dbus_service_property(_interface, signature="b",

2030

@dbus_service_property(_interface,

2031

signature="b",

1525

2032

access="readwrite")

1526

2033

def Enabled_dbus_property(self, value=None):

1527

2034

if value is None: # get

1530

2037

self.enable()

1531

2038

else:

1532

2039

self.disable()

1533

2040

1534

2041

# LastCheckedOK - property

1535

@dbus_service_property(_interface, signature="s",

2042

@dbus_service_property(_interface,

2043

signature="s",

1536

2044

access="readwrite")

1537

2045

def LastCheckedOK_dbus_property(self, value=None):

1538

2046

if value is not None:

1539

2047

self.checked_ok()

1540

2048

return

1541

2049

return datetime_to_dbus(self.last_checked_ok)

1542

2050

1543

2051

# LastCheckerStatus - property

1544

@dbus_service_property(_interface, signature="n",

1545

access="read")

2052

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

1546

2053

def LastCheckerStatus_dbus_property(self):

1547

2054

return dbus.Int16(self.last_checker_status)

1548

2055

1549

2056

# Expires - property

1550

2057

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

1551

2058

def Expires_dbus_property(self):

1552

2059

return datetime_to_dbus(self.expires)

1553

2060

1554

2061

# LastApprovalRequest - property

1555

2062

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

1556

2063

def LastApprovalRequest_dbus_property(self):

1557

2064

return datetime_to_dbus(self.last_approval_request)

1558

2065

1559

2066

# Timeout - property

1560

@dbus_service_property(_interface, signature="t",

2067

@dbus_service_property(_interface,

2068

signature="t",

1561

2069

access="readwrite")

1562

2070

def Timeout_dbus_property(self, value=None):

1563

2071

if value is None: # get

1564

return dbus.UInt64(self.timeout_milliseconds())

2072

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

1565

2073

old_timeout = self.timeout

1566

2074

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

1567

2075

# Reschedule disabling

1575

2083

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

1576

2084

is None):

1577

2085

return

1578

gobject.source_remove(self.disable_initiator_tag)

1579

self.disable_initiator_tag = (

1580

gobject.timeout_add(

1581

timedelta_to_milliseconds(self.expires - now),

1582

self.disable))

1583

2086

GLib.source_remove(self.disable_initiator_tag)

2087

self.disable_initiator_tag = GLib.timeout_add(

2088

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

2089

self.disable)

2090

1584

2091

# ExtendedTimeout - property

1585

@dbus_service_property(_interface, signature="t",

2092

@dbus_service_property(_interface,

2093

signature="t",

1586

2094

access="readwrite")

1587

2095

def ExtendedTimeout_dbus_property(self, value=None):

1588

2096

if value is None: # get

1589

return dbus.UInt64(self.extended_timeout_milliseconds())

2097

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

2098

* 1000)

1590

2099

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

1591

2100

1592

2101

# Interval - property

1593

@dbus_service_property(_interface, signature="t",

2102

@dbus_service_property(_interface,

2103

signature="t",

1594

2104

access="readwrite")

1595

2105

def Interval_dbus_property(self, value=None):

1596

2106

if value is None: # get

1597

return dbus.UInt64(self.interval_milliseconds())

2107

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

1598

2108

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

1599

2109

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

1600

2110

return

1601

2111

if self.enabled:

1602

2112

# Reschedule checker run

1603

gobject.source_remove(self.checker_initiator_tag)

1604

self.checker_initiator_tag = (gobject.timeout_add

1605

(value, self.start_checker))

1606

self.start_checker() # Start one now, too

1607

2113

GLib.source_remove(self.checker_initiator_tag)

2114

self.checker_initiator_tag = GLib.timeout_add(

2115

value, self.start_checker)

2116

self.start_checker() # Start one now, too

2117

1608

2118

# Checker - property

1609

@dbus_service_property(_interface, signature="s",

2119

@dbus_service_property(_interface,

2120

signature="s",

1610

2121

access="readwrite")

1611

2122

def Checker_dbus_property(self, value=None):

1612

2123

if value is None: # get

1613

2124

return dbus.String(self.checker_command)

1614

self.checker_command = unicode(value)

1615

2125

self.checker_command = str(value)

2126

1616

2127

# CheckerRunning - property

1617

@dbus_service_property(_interface, signature="b",

2128

@dbus_service_property(_interface,

2129

signature="b",

1618

2130

access="readwrite")

1619

2131

def CheckerRunning_dbus_property(self, value=None):

1620

2132

if value is None: # get

1623

2135

self.start_checker()

1624

2136

else:

1625

2137

self.stop_checker()

1626

2138

1627

2139

# ObjectPath - property

2140

@dbus_annotations(

2141

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

2142

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

1628

2143

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

1629

2144

def ObjectPath_dbus_property(self):

1630

return self.dbus_object_path # is already a dbus.ObjectPath

1631

2145

return self.dbus_object_path # is already a dbus.ObjectPath

2146

1632

2147

# Secret = property

1633

@dbus_service_property(_interface, signature="ay",

1634

access="write", byte_arrays=True)

2148

@dbus_annotations(

2149

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

2150

"invalidates"})

2151

@dbus_service_property(_interface,

2152

signature="ay",

2153

access="write",

2154

byte_arrays=True)

1635

2155

def Secret_dbus_property(self, value):

1636

self.secret = str(value)

1637

2156

self.secret = bytes(value)

2157

1638

2158

del _interface

1639

2159

1640

2160

1643

2163

self._pipe = child_pipe

1644

2164

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

1645

2165

if not self._pipe.recv():

1646

raise KeyError()

1647

2166

raise KeyError(fpr)

2167

1648

2168

def __getattribute__(self, name):

1649

2169

if name == '_pipe':

1650

2170

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

1653

2173

if data[0] == 'data':

1654

2174

return data[1]

1655

2175

if data[0] == 'function':

2176

1656

2177

def func(*args, **kwargs):

1657

2178

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

1658

2179

return self._pipe.recv()[1]

2180

1659

2181

return func

1660

2182

1661

2183

def __setattr__(self, name, value):

1662

2184

if name == '_pipe':

1663

2185

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

1666

2188

1667

2189

class ClientHandler(socketserver.BaseRequestHandler, object):

1668

2190

"""A class to handle client connections.

1669

2191

1670

2192

Instantiated once for each connection to handle it.

1671

2193

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

1672

2194

1673

2195

def handle(self):

1674

2196

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

1675

2197

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

1676

unicode(self.client_address))

2198

str(self.client_address))

1677

2199

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

1678

2200

self.server.child_pipe.fileno())

1679

1680

session = (gnutls.connection

1681

.ClientSession(self.request,

1682

gnutls.connection

1683

.X509Credentials()))

1684

1685

# Note: gnutls.connection.X509Credentials is really a

1686

# generic GnuTLS certificate credentials object so long as

1687

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

1688

# here despite using OpenPGP certificates.

1689

1690

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

1691

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

1692

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

1693

# "+DHE-DSS"))

2201

2202

session = gnutls.ClientSession(self.request)

2203

2204

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

2205

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

2206

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

2207

# "+DHE-DSS"))

1694

2208

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

1695

2209

priority = self.server.gnutls_priority

1696

2210

if priority is None:

1697

2211

priority = "NORMAL"

1698

(gnutls.library.functions

1699

.gnutls_priority_set_direct(session._c_object,

1700

priority, None))

1701

2212

gnutls.priority_set_direct(session._c_object,

2213

priority.encode("utf-8"),

2214

None)

2215

1702

2216

# Start communication using the Mandos protocol

1703

2217

# Get protocol number

1704

2218

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

1709

2223

except (ValueError, IndexError, RuntimeError) as error:

1710

2224

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

1711

2225

return

1712

2226

1713

2227

# Start GnuTLS connection

1714

2228

try:

1715

2229

session.handshake()

1716

except gnutls.errors.GNUTLSError as error:

2230

except gnutls.Error as error:

1717

2231

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

1718

2232

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

1719

2233

# established. Just abandon the request.

1720

2234

return

1721

2235

logger.debug("Handshake succeeded")

1722

2236

1723

2237

approval_required = False

1724

2238

try:

1725

2239

try:

1726

fpr = self.fingerprint(self.peer_certificate

1727

(session))

1728

except (TypeError,

1729

gnutls.errors.GNUTLSError) as error:

2240

fpr = self.fingerprint(

2241

self.peer_certificate(session))

2242

except (TypeError, gnutls.Error) as error:

1730

2243

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

1731

2244

return

1732

2245

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

1733

2246

1734

2247

try:

1735

2248

client = ProxyClient(child_pipe, fpr,

1736

2249

self.client_address)

1737

2250

except KeyError:

1738

2251

return

1739

2252

1740

2253

if client.approval_delay:

1741

2254

delay = client.approval_delay

1742

2255

client.approvals_pending += 1

1743

2256

approval_required = True

1744

2257

1745

2258

while True:

1746

2259

if not client.enabled:

1747

2260

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

1748

client.name)

2261

client.name)

1749

2262

if self.server.use_dbus:

1750

2263

# Emit D-Bus signal

1751

2264

client.Rejected("Disabled")

1752

2265

return

1753

2266

1754

2267

if client.approved or not client.approval_delay:

1755

#We are approved or approval is disabled

2268

# We are approved or approval is disabled

1756

2269

break

1757

2270

elif client.approved is None:

1758

2271

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

1760

2273

if self.server.use_dbus:

1761

2274

# Emit D-Bus signal

1762

2275

client.NeedApproval(

1763

client.approval_delay_milliseconds(),

1764

client.approved_by_default)

2276

client.approval_delay.total_seconds()

2277

* 1000, client.approved_by_default)

1765

2278

else:

1766

2279

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

1767

2280

client.name)

1769

2282

# Emit D-Bus signal

1770

2283

client.Rejected("Denied")

1771

2284

return

1772

1773

#wait until timeout or approved

2285

2286

# wait until timeout or approved

1774

2287

time = datetime.datetime.now()

1775

2288

client.changedstate.acquire()

1776

client.changedstate.wait(

1777

float(timedelta_to_milliseconds(delay)

1778

/ 1000))

2289

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

1779

2290

client.changedstate.release()

1780

2291

time2 = datetime.datetime.now()

1781

2292

if (time2 - time) >= delay:

1791

2302

break

1792

2303

else:

1793

2304

delay -= time2 - time

1794

1795

sent_size = 0

1796

while sent_size < len(client.secret):

1797

try:

1798

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

1799

except gnutls.errors.GNUTLSError as error:

1800

logger.warning("gnutls send failed",

1801

exc_info=error)

1802

return

1803

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

1804

sent, len(client.secret)

1805

- (sent_size + sent))

1806

sent_size += sent

1807

2305

2306

try:

2307

session.send(client.secret)

2308

except gnutls.Error as error:

2309

logger.warning("gnutls send failed",

2310

exc_info=error)

2311

return

2312

1808

2313

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

1809

2314

# bump the timeout using extended_timeout

1810

2315

client.bump_timeout(client.extended_timeout)

1811

2316

if self.server.use_dbus:

1812

2317

# Emit D-Bus signal

1813

2318

client.GotSecret()

1814

2319

1815

2320

finally:

1816

2321

if approval_required:

1817

2322

client.approvals_pending -= 1

1818

2323

try:

1819

2324

session.bye()

1820

except gnutls.errors.GNUTLSError as error:

2325

except gnutls.Error as error:

1821

2326

logger.warning("GnuTLS bye failed",

1822

2327

exc_info=error)

1823

2328

1824

2329

@staticmethod

1825

2330

def peer_certificate(session):

1826

2331

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

1827

2332

# If not an OpenPGP certificate...

1828

if (gnutls.library.functions

1829

.gnutls_certificate_type_get(session._c_object)

1830

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1831

# ...do the normal thing

1832

return session.peer_certificate

2333

if (gnutls.certificate_type_get(session._c_object)

2334

!= gnutls.CRT_OPENPGP):

2335

# ...return invalid data

2336

return b""

1833

2337

list_size = ctypes.c_uint(1)

1834

cert_list = (gnutls.library.functions

1835

.gnutls_certificate_get_peers

2338

cert_list = (gnutls.certificate_get_peers

1836

2339

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

1837

2340

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

1838

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

1839

" certificate")

2341

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

1840

2342

if list_size.value == 0:

1841

2343

return None

1842

2344

cert = cert_list[0]

1843

2345

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

1844

2346

1845

2347

@staticmethod

1846

2348

def fingerprint(openpgp):

1847

2349

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

1848

2350

# New GnuTLS "datum" with the OpenPGP public key

1849

datum = (gnutls.library.types

1850

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

1851

ctypes.POINTER

1852

(ctypes.c_ubyte)),

1853

ctypes.c_uint(len(openpgp))))

2351

datum = gnutls.datum_t(

2352

ctypes.cast(ctypes.c_char_p(openpgp),

2353

ctypes.POINTER(ctypes.c_ubyte)),

2354

ctypes.c_uint(len(openpgp)))

1854

2355

# New empty GnuTLS certificate

1855

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1856

(gnutls.library.functions

1857

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

2356

crt = gnutls.openpgp_crt_t()

2357

gnutls.openpgp_crt_init(ctypes.byref(crt))

1858

2358

# Import the OpenPGP public key into the certificate

1859

(gnutls.library.functions

1860

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

1861

gnutls.library.constants

1862

.GNUTLS_OPENPGP_FMT_RAW))

2359

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

2360

gnutls.OPENPGP_FMT_RAW)

1863

2361

# Verify the self signature in the key

1864

2362

crtverify = ctypes.c_uint()

1865

(gnutls.library.functions

1866

.gnutls_openpgp_crt_verify_self(crt, 0,

1867

ctypes.byref(crtverify)))

2363

gnutls.openpgp_crt_verify_self(crt, 0,

2364

ctypes.byref(crtverify))

1868

2365

if crtverify.value != 0:

1869

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1870

raise (gnutls.errors.CertificateSecurityError

1871

("Verify failed"))

2366

gnutls.openpgp_crt_deinit(crt)

2367

raise gnutls.CertificateSecurityError("Verify failed")

1872

2368

# New buffer for the fingerprint

1873

2369

buf = ctypes.create_string_buffer(20)

1874

2370

buf_len = ctypes.c_size_t()

1875

2371

# Get the fingerprint from the certificate into the buffer

1876

(gnutls.library.functions

1877

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

1878

ctypes.byref(buf_len)))

2372

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

2373

ctypes.byref(buf_len))

1879

2374

# Deinit the certificate

1880

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

2375

gnutls.openpgp_crt_deinit(crt)

1881

2376

# Convert the buffer to a Python bytestring

1882

2377

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

1883

2378

# Convert the bytestring to hexadecimal notation

1887

2382

1888

2383

class MultiprocessingMixIn(object):

1889

2384

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

2385

1890

2386

def sub_process_main(self, request, address):

1891

2387

try:

1892

2388

self.finish_request(request, address)

1893

2389

except Exception:

1894

2390

self.handle_error(request, address)

1895

2391

self.close_request(request)

1896

2392

1897

2393

def process_request(self, request, address):

1898

2394

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

1899

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

1900

args = (request, address))

2395

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

2396

args=(request, address))

1901

2397

proc.start()

1902

2398

return proc

1903

2399

1904

2400

1905

2401

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

1906

2402

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

2403

1907

2404

def process_request(self, request, client_address):

1908

2405

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

1909

2406

1910

2407

This function creates a new pipe in self.pipe

1911

2408

"""

1912

2409

parent_pipe, self.child_pipe = multiprocessing.Pipe()

1913

2410

1914

2411

proc = MultiprocessingMixIn.process_request(self, request,

1915

2412

client_address)

1916

2413

self.child_pipe.close()

1917

2414

self.add_pipe(parent_pipe, proc)

1918

2415

1919

2416

def add_pipe(self, parent_pipe, proc):

1920

2417

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

1921

2418

raise NotImplementedError()

1924

2421

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

1925

2422

socketserver.TCPServer, object):

1926

2423

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

1927

2424

1928

2425

Attributes:

1929

2426

enabled: Boolean; whether this server is activated yet

1930

2427

interface: None or a network interface name (string)

1931

2428

use_ipv6: Boolean; to use IPv6 or not

1932

2429

"""

2430

1933

2431

def __init__(self, server_address, RequestHandlerClass,

1934

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

2432

interface=None,

2433

use_ipv6=True,

2434

socketfd=None):

1935

2435

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

1936

2436

creating a new one with socket.socket().

1937

2437

"""

1943

2443

self.socketfd = socketfd

1944

2444

# Save the original socket.socket() function

1945

2445

self.socket_socket = socket.socket

2446

1946

2447

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

1947

#

2448

#

1948

2449

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

1949

2450

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

1950

2451

# patching socket.socket.)

1951

#

2452

#

1952

2453

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

1953

2454

@functools.wraps(socket.socket)

1954

2455

def socket_wrapper(*args, **kwargs):

1966

2467

# socket_wrapper(), if socketfd was set.

1967

2468

socketserver.TCPServer.__init__(self, server_address,

1968

2469

RequestHandlerClass)

1969

2470

1970

2471

def server_bind(self):

1971

2472

"""This overrides the normal server_bind() function

1972

2473

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

1973

2474

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

2475

global SO_BINDTODEVICE

1974

2476

if self.interface is not None:

1975

2477

if SO_BINDTODEVICE is None:

1976

logger.error("SO_BINDTODEVICE does not exist;"

1977

" cannot bind to interface %s",

1978

self.interface)

1979

else:

1980

try:

1981

self.socket.setsockopt(socket.SOL_SOCKET,

1982

SO_BINDTODEVICE,

1983

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

1984

except socket.error as error:

1985

if error.errno == errno.EPERM:

1986

logger.error("No permission to bind to"

1987

" interface %s", self.interface)

1988

elif error.errno == errno.ENOPROTOOPT:

1989

logger.error("SO_BINDTODEVICE not available;"

1990

" cannot bind to interface %s",

1991

self.interface)

1992

elif error.errno == errno.ENODEV:

1993

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

1994

" cannot bind", self.interface)

1995

else:

1996

raise

2478

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

2479

# common enough.

2480

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

2481

SO_BINDTODEVICE = 25

2482

try:

2483

self.socket.setsockopt(

2484

socket.SOL_SOCKET, SO_BINDTODEVICE,

2485

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

2486

except socket.error as error:

2487

if error.errno == errno.EPERM:

2488

logger.error("No permission to bind to"

2489

" interface %s", self.interface)

2490

elif error.errno == errno.ENOPROTOOPT:

2491

logger.error("SO_BINDTODEVICE not available;"

2492

" cannot bind to interface %s",

2493

self.interface)

2494

elif error.errno == errno.ENODEV:

2495

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

2496

" cannot bind", self.interface)

2497

else:

2498

raise

1997

2499

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

1998

2500

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

1999

2501

if not self.server_address[0]:

2000

2502

if self.address_family == socket.AF_INET6:

2001

any_address = "::" # in6addr_any

2503

any_address = "::" # in6addr_any

2002

2504

else:

2003

any_address = "0.0.0.0" # INADDR_ANY

2505

any_address = "0.0.0.0" # INADDR_ANY

2004

2506

self.server_address = (any_address,

2005

2507

self.server_address[1])

2006

2508

elif not self.server_address[1]:

2007

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

2008

0)

2509

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

2009

2510

# if self.interface:

2010

2511

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

2011

2512

# 0, # port

2017

2518

2018

2519

class MandosServer(IPv6_TCPServer):

2019

2520

"""Mandos server.

2020

2521

2021

2522

Attributes:

2022

2523

clients: set of Client objects

2023

2524

gnutls_priority GnuTLS priority string

2024

2525

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

2025

2026

Assumes a gobject.MainLoop event loop.

2526

2527

Assumes a GLib.MainLoop event loop.

2027

2528

"""

2529

2028

2530

def __init__(self, server_address, RequestHandlerClass,

2029

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

2030

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

2531

interface=None,

2532

use_ipv6=True,

2533

clients=None,

2534

gnutls_priority=None,

2535

use_dbus=True,

2536

socketfd=None):

2031

2537

self.enabled = False

2032

2538

self.clients = clients

2033

2539

if self.clients is None:

2036

2542

self.gnutls_priority = gnutls_priority

2037

2543

IPv6_TCPServer.__init__(self, server_address,

2038

2544

RequestHandlerClass,

2039

interface = interface,

2040

use_ipv6 = use_ipv6,

2041

socketfd = socketfd)

2545

interface=interface,

2546

use_ipv6=use_ipv6,

2547

socketfd=socketfd)

2548

2042

2549

def server_activate(self):

2043

2550

if self.enabled:

2044

2551

return socketserver.TCPServer.server_activate(self)

2045

2552

2046

2553

def enable(self):

2047

2554

self.enabled = True

2048

2555

2049

2556

def add_pipe(self, parent_pipe, proc):

2050

2557

# Call "handle_ipc" for both data and EOF events

2051

gobject.io_add_watch(parent_pipe.fileno(),

2052

gobject.IO_IN | gobject.IO_HUP,

2053

functools.partial(self.handle_ipc,

2054

parent_pipe =

2055

parent_pipe,

2056

proc = proc))

2057

2058

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

2059

proc = None, client_object=None):

2558

GLib.io_add_watch(

2559

parent_pipe.fileno(),

2560

GLib.IO_IN | GLib.IO_HUP,

2561

functools.partial(self.handle_ipc,

2562

parent_pipe=parent_pipe,

2563

proc=proc))

2564

2565

def handle_ipc(self, source, condition,

2566

parent_pipe=None,

2567

proc=None,

2568

client_object=None):

2060

2569

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

2061

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

2570

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

2062

2571

# Wait for other process to exit

2063

2572

proc.join()

2064

2573

return False

2065

2574

2066

2575

# Read a request from the child

2067

2576

request = parent_pipe.recv()

2068

2577

command = request[0]

2069

2578

2070

2579

if command == 'init':

2071

2580

fpr = request[1]

2072

2581

address = request[2]

2073

2074

for c in self.clients.itervalues():

2582

2583

for c in self.clients.values():

2075

2584

if c.fingerprint == fpr:

2076

2585

client = c

2077

2586

break

2084

2593

address[0])

2085

2594

parent_pipe.send(False)

2086

2595

return False

2087

2088

gobject.io_add_watch(parent_pipe.fileno(),

2089

gobject.IO_IN | gobject.IO_HUP,

2090

functools.partial(self.handle_ipc,

2091

parent_pipe =

2092

parent_pipe,

2093

proc = proc,

2094

client_object =

2095

client))

2596

2597

GLib.io_add_watch(

2598

parent_pipe.fileno(),

2599

GLib.IO_IN | GLib.IO_HUP,

2600

functools.partial(self.handle_ipc,

2601

parent_pipe=parent_pipe,

2602

proc=proc,

2603

client_object=client))

2096

2604

parent_pipe.send(True)

2097

2605

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

2098

2606

# same fileno

2101

2609

funcname = request[1]

2102

2610

args = request[2]

2103

2611

kwargs = request[3]

2104

2612

2105

2613

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

2106

2614

funcname)(*args,

2107

**kwargs)))

2108

2615

**kwargs)))

2616

2109

2617

if command == 'getattr':

2110

2618

attrname = request[1]

2111

if callable(client_object.__getattribute__(attrname)):

2112

parent_pipe.send(('function',))

2619

if isinstance(client_object.__getattribute__(attrname),

2620

collections.Callable):

2621

parent_pipe.send(('function', ))

2113

2622

else:

2114

parent_pipe.send(('data', client_object

2115

.__getattribute__(attrname)))

2116

2623

parent_pipe.send((

2624

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

2625

2117

2626

if command == 'setattr':

2118

2627

attrname = request[1]

2119

2628

value = request[2]

2120

2629

setattr(client_object, attrname, value)

2121

2630

2122

2631

return True

2123

2632

2124

2633

2125

2634

def rfc3339_duration_to_delta(duration):

2126

2635

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

2127

2636

2128

2637

>>> rfc3339_duration_to_delta("P7D")

2129

2638

datetime.timedelta(7)

2130

2639

>>> rfc3339_duration_to_delta("PT60S")

2140

2649

>>> rfc3339_duration_to_delta("P1DT3M20S")

2141

2650

datetime.timedelta(1, 200)

2142

2651

"""

2143

2652

2144

2653

# Parsing an RFC 3339 duration with regular expressions is not

2145

2654

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

2146

2655

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

2147

2656

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

2148

2657

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

2149

2658

# avoid excessive use of external libraries.

2150

2659

2151

2660

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

2152

Token = collections.namedtuple("Token",

2153

("regexp", # To match token; if

2154

# "value" is not None,

2155

# must have a "group"

2156

# containing digits

2157

"value", # datetime.timedelta or

2158

# None

2159

"followers")) # Tokens valid after

2160

# this token

2661

Token = collections.namedtuple("Token", (

2662

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

2663

# a "group" containing digits

2664

"value", # datetime.timedelta or None

2665

"followers")) # Tokens valid after this token

2161

2666

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

2162

2667

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

2163

2668

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

2164

2669

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

2165

2670

datetime.timedelta(seconds=1),

2166

frozenset((token_end,)))

2671

frozenset((token_end, )))

2167

2672

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

2168

2673

datetime.timedelta(minutes=1),

2169

2674

frozenset((token_second, token_end)))

2185

2690

frozenset((token_month, token_end)))

2186

2691

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

2187

2692

datetime.timedelta(weeks=1),

2188

frozenset((token_end,)))

2693

frozenset((token_end, )))

2189

2694

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

2190

2695

frozenset((token_year, token_month,

2191

2696

token_day, token_time,

2192

token_week))),

2193

# Define starting values

2194

value = datetime.timedelta() # Value so far

2697

token_week)))

2698

# Define starting values:

2699

# Value so far

2700

value = datetime.timedelta()

2195

2701

found_token = None

2196

followers = frozenset(token_duration,) # Following valid tokens

2197

s = duration # String left to parse

2702

# Following valid tokens

2703

followers = frozenset((token_duration, ))

2704

# String left to parse

2705

s = duration

2198

2706

# Loop until end token is found

2199

2707

while found_token is not token_end:

2200

2708

# Search for any currently valid tokens

2216

2724

break

2217

2725

else:

2218

2726

# No currently valid tokens were found

2219

raise ValueError("Invalid RFC 3339 duration")

2727

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

2728

.format(duration))

2220

2729

# End token found

2221

2730

return value

2222

2731

2223

2732

2224

2733

def string_to_delta(interval):

2225

2734

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

2226

2735

2227

2736

>>> string_to_delta('7d')

2228

2737

datetime.timedelta(7)

2229

2738

>>> string_to_delta('60s')

2237

2746

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

2238

2747

datetime.timedelta(0, 330)

2239

2748

"""

2240

2749

2241

2750

try:

2242

2751

return rfc3339_duration_to_delta(interval)

2243

2752

except ValueError:

2244

2753

pass

2245

2754

2246

2755

timevalue = datetime.timedelta(0)

2247

2756

for s in interval.split():

2248

2757

try:

2249

suffix = unicode(s[-1])

2758

suffix = s[-1]

2250

2759

value = int(s[:-1])

2251

2760

if suffix == "d":

2252

2761

delta = datetime.timedelta(value)

2259

2768

elif suffix == "w":

2260

2769

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

2261

2770

else:

2262

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

2263

.format(suffix))

2771

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

2264

2772

except IndexError as e:

2265

2773

raise ValueError(*(e.args))

2266

2774

timevalue += delta

2267

2775

return timevalue

2268

2776

2269

2777

2270

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

2778

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

2271

2779

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

2272

2780

2273

2781

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

2274

2782

if os.fork():

2275

2783

sys.exit()

2283

2791

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

2284

2792

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

2285

2793

raise OSError(errno.ENODEV,

2286

"{0} not a character device"

2794

"{} not a character device"

2287

2795

.format(os.devnull))

2288

2796

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

2289

2797

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

2293

2801

2294

2802

2295

2803

def main():

2296

2804

2297

2805

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

2298

2806

# Parsing of options, both command line and config file

2299

2807

2300

2808

parser = argparse.ArgumentParser()

2301

2809

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

2302

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

2810

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

2303

2811

help="show version number and exit")

2304

2812

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

2305

2813

help="Bind to interface IF")

2338

2846

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

2339

2847

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

2340

2848

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

2341

2849

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

2850

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

2851

default=None)

2852

2342

2853

options = parser.parse_args()

2343

2854

2344

2855

if options.check:

2345

2856

import doctest

2346

doctest.testmod()

2347

sys.exit()

2348

2857

fail_count, test_count = doctest.testmod()

2858

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

2859

2349

2860

# Default values for config file for server-global settings

2350

server_defaults = { "interface": "",

2351

"address": "",

2352

"port": "",

2353

"debug": "False",

2354

"priority":

2355

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

2356

"servicename": "Mandos",

2357

"use_dbus": "True",

2358

"use_ipv6": "True",

2359

"debuglevel": "",

2360

"restore": "True",

2361

"socket": "",

2362

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

2363

"foreground": "False",

2364

}

2365

2861

server_defaults = {"interface": "",

2862

"address": "",

2863

"port": "",

2864

"debug": "False",

2865

"priority":

2866

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

2867

":+SIGN-DSA-SHA256",

2868

"servicename": "Mandos",

2869

"use_dbus": "True",

2870

"use_ipv6": "True",

2871

"debuglevel": "",

2872

"restore": "True",

2873

"socket": "",

2874

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

2875

"foreground": "False",

2876

"zeroconf": "True",

2877

}

2878

2366

2879

# Parse config file for server-global settings

2367

2880

server_config = configparser.SafeConfigParser(server_defaults)

2368

2881

del server_defaults

2369

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

2370

"mandos.conf"))

2882

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

2371

2883

# Convert the SafeConfigParser object to a dict

2372

2884

server_settings = server_config.defaults()

2373

2885

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

2387

2899

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

2388

2900

["socket"])

2389

2901

del server_config

2390

2902

2391

2903

# Override the settings from the config file with command line

2392

2904

# options, if set.

2393

2905

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

2394

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

2395

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

2396

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

2906

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

2907

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

2908

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

2397

2909

value = getattr(options, option)

2398

2910

if value is not None:

2399

2911

server_settings[option] = value

2400

2912

del options

2401

2913

# Force all strings to be unicode

2402

2914

for option in server_settings.keys():

2403

if type(server_settings[option]) is str:

2404

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

2915

if isinstance(server_settings[option], bytes):

2916

server_settings[option] = (server_settings[option]

2917

.decode("utf-8"))

2405

2918

# Force all boolean options to be boolean

2406

2919

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

2407

"foreground"):

2920

"foreground", "zeroconf"):

2408

2921

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

2409

2922

# Debug implies foreground

2410

2923

if server_settings["debug"]:

2411

2924

server_settings["foreground"] = True

2412

2925

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

2413

2926

2414

2927

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

2415

2928

2929

if (not server_settings["zeroconf"]

2930

and not (server_settings["port"]

2931

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

2932

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

2933

2416

2934

# For convenience

2417

2935

debug = server_settings["debug"]

2418

2936

debuglevel = server_settings["debuglevel"]

2421

2939

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

2422

2940

stored_state_file)

2423

2941

foreground = server_settings["foreground"]

2424

2942

zeroconf = server_settings["zeroconf"]

2943

2425

2944

if debug:

2426

2945

initlogger(debug, logging.DEBUG)

2427

2946

else:

2430

2949

else:

2431

2950

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

2432

2951

initlogger(debug, level)

2433

2952

2434

2953

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

2435

syslogger.setFormatter(logging.Formatter

2436

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

2437

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

2438

.format(server_settings

2439

["servicename"])))

2440

2954

syslogger.setFormatter(

2955

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

2956

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

2957

server_settings["servicename"])))

2958

2441

2959

# Parse config file with clients

2442

2960

client_config = configparser.SafeConfigParser(Client

2443

2961

.client_defaults)

2444

2962

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

2445

2963

"clients.conf"))

2446

2964

2447

2965

global mandos_dbus_service

2448

2966

mandos_dbus_service = None

2449

2450

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

2451

server_settings["port"]),

2452

ClientHandler,

2453

interface=(server_settings["interface"]

2454

or None),

2455

use_ipv6=use_ipv6,

2456

gnutls_priority=

2457

server_settings["priority"],

2458

use_dbus=use_dbus,

2459

socketfd=(server_settings["socket"]

2460

or None))

2967

2968

socketfd = None

2969

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

2970

socketfd = server_settings["socket"]

2971

tcp_server = MandosServer(

2972

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

2973

ClientHandler,

2974

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

2975

use_ipv6=use_ipv6,

2976

gnutls_priority=server_settings["priority"],

2977

use_dbus=use_dbus,

2978

socketfd=socketfd)

2461

2979

if not foreground:

2462

2980

pidfilename = "/run/mandos.pid"

2463

2981

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

2464

2982

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

2465

2983

pidfile = None

2466

2984

try:

2467

pidfile = open(pidfilename, "w")

2985

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

2468

2986

except IOError as e:

2469

2987

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

2470

2988

exc_info=e)

2471

2472

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

2989

2990

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

2991

("mandos", "mandos"),

2992

("nobody", "nogroup")):

2473

2993

try:

2474

2994

uid = pwd.getpwnam(name).pw_uid

2475

gid = pwd.getpwnam(name).pw_gid

2995

gid = pwd.getpwnam(group).pw_gid

2476

2996

break

2477

2997

except KeyError:

2478

2998

continue

2482

3002

try:

2483

3003

os.setgid(gid)

2484

3004

os.setuid(uid)

3005

if debug:

3006

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

3007

gid))

2485

3008

except OSError as error:

3009

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

3010

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

2486

3011

if error.errno != errno.EPERM:

2487

3012

raise

2488

3013

2489

3014

if debug:

2490

3015

# Enable all possible GnuTLS debugging

2491

3016

2492

3017

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

2493

3018

# - GnuTLS manual

2494

gnutls.library.functions.gnutls_global_set_log_level(11)

2495

2496

@gnutls.library.types.gnutls_log_func

3019

gnutls.global_set_log_level(11)

3020

3021

@gnutls.log_func

2497

3022

def debug_gnutls(level, string):

2498

3023

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

2499

2500

(gnutls.library.functions

2501

.gnutls_global_set_log_function(debug_gnutls))

2502

3024

3025

gnutls.global_set_log_function(debug_gnutls)

3026

2503

3027

# Redirect stdin so all checkers get /dev/null

2504

3028

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

2505

3029

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

2506

3030

if null > 2:

2507

3031

os.close(null)

2508

3032

2509

3033

# Need to fork before connecting to D-Bus

2510

3034

if not foreground:

2511

3035

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

2512

3036

daemon()

2513

2514

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

2515

# need to inform gobject that threads will be used.

2516

gobject.threads_init()

2517

3037

3038

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

3039

# to inform GLib that threads will be used.

3040

GLib.threads_init()

3041

2518

3042

global main_loop

2519

3043

# From the Avahi example code

2520

3044

DBusGMainLoop(set_as_default=True)

2521

main_loop = gobject.MainLoop()

3045

main_loop = GLib.MainLoop()

2522

3046

bus = dbus.SystemBus()

2523

3047

# End of Avahi example code

2524

3048

if use_dbus:

2525

3049

try:

2526

3050

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

2527

bus, do_not_queue=True)

2528

old_bus_name = (dbus.service.BusName

2529

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

2530

do_not_queue=True))

2531

except dbus.exceptions.NameExistsException as e:

3051

bus,

3052

do_not_queue=True)

3053

old_bus_name = dbus.service.BusName(

3054

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

3055

do_not_queue=True)

3056

except dbus.exceptions.DBusException as e:

2532

3057

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

2533

3058

use_dbus = False

2534

3059

server_settings["use_dbus"] = False

2535

3060

tcp_server.use_dbus = False

2536

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2537

service = AvahiServiceToSyslog(name =

2538

server_settings["servicename"],

2539

servicetype = "_mandos._tcp",

2540

protocol = protocol, bus = bus)

2541

if server_settings["interface"]:

2542

service.interface = (if_nametoindex

2543

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

2544

3061

if zeroconf:

3062

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

3063

service = AvahiServiceToSyslog(

3064

name=server_settings["servicename"],

3065

servicetype="_mandos._tcp",

3066

protocol=protocol,

3067

bus=bus)

3068

if server_settings["interface"]:

3069

service.interface = if_nametoindex(

3070

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

3071

2545

3072

global multiprocessing_manager

2546

3073

multiprocessing_manager = multiprocessing.Manager()

2547

3074

2548

3075

client_class = Client

2549

3076

if use_dbus:

2550

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

2551

3077

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

3078

2552

3079

client_settings = Client.config_parser(client_config)

2553

3080

old_client_settings = {}

2554

3081

clients_data = {}

2555

3082

2556

3083

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

2557

3084

global wnull

2558

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

3085

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

2559

3086

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

2560

3087

# mode

2561

3088

if debug or not foreground:

2562

3089

wnull.close()

2563

3090

2564

3091

# Get client data and settings from last running state.

2565

3092

if server_settings["restore"]:

2566

3093

try:

2567

3094

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

2568

clients_data, old_client_settings = (pickle.load

2569

(stored_state))

3095

if sys.version_info.major == 2:

3096

clients_data, old_client_settings = pickle.load(

3097

stored_state)

3098

else:

3099

bytes_clients_data, bytes_old_client_settings = (

3100

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

3101

# Fix bytes to strings

3102

# clients_data

3103

# .keys()

3104

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

3105

if isinstance(key, bytes)

3106

else key): value

3107

for key, value in

3108

bytes_clients_data.items()}

3109

del bytes_clients_data

3110

for key in clients_data:

3111

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

3112

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

3113

for k, v in

3114

clients_data[key].items()}

3115

clients_data[key] = value

3116

# .client_structure

3117

value["client_structure"] = [

3118

(s.decode("utf-8")

3119

if isinstance(s, bytes)

3120

else s) for s in

3121

value["client_structure"]]

3122

# .name & .host

3123

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

3124

if isinstance(value[k], bytes):

3125

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

3126

# old_client_settings

3127

# .keys()

3128

old_client_settings = {

3129

(key.decode("utf-8")

3130

if isinstance(key, bytes)

3131

else key): value

3132

for key, value in

3133

bytes_old_client_settings.items()}

3134

del bytes_old_client_settings

3135

# .host

3136

for value in old_client_settings.values():

3137

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

3138

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

3139

.decode("utf-8"))

2570

3140

os.remove(stored_state_path)

2571

3141

except IOError as e:

2572

3142

if e.errno == errno.ENOENT:

2573

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

2574

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

3143

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

3144

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

2575

3145

else:

2576

3146

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

2577

3147

exc_info=e)

2578

3148

raise

2579

3149

except EOFError as e:

2580

3150

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

2581

"EOFError:", exc_info=e)

2582

3151

"EOFError:",

3152

exc_info=e)

3153

2583

3154

with PGPEngine() as pgp:

2584

for client_name, client in clients_data.iteritems():

3155

for client_name, client in clients_data.items():

2585

3156

# Skip removed clients

2586

3157

if client_name not in client_settings:

2587

3158

continue

2588

3159

2589

3160

# Decide which value to use after restoring saved state.

2590

3161

# We have three different values: Old config file,

2591

3162

# new config file, and saved state.

2596

3167

# For each value in new config, check if it

2597

3168

# differs from the old config value (Except for

2598

3169

# the "secret" attribute)

2599

if (name != "secret" and

2600

value != old_client_settings[client_name]

2601

[name]):

3170

if (name != "secret"

3171

and (value !=

3172

old_client_settings[client_name][name])):

2602

3173

client[name] = value

2603

3174

except KeyError:

2604

3175

pass

2605

3176

2606

3177

# Clients who has passed its expire date can still be

2607

# enabled if its last checker was successful. Clients

3178

# enabled if its last checker was successful. A Client

2608

3179

# whose checker succeeded before we stored its state is

2609

3180

# assumed to have successfully run all checkers during

2610

3181

# downtime.

2612

3183

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

2613

3184

if not client["last_checked_ok"]:

2614

3185

logger.warning(

2615

"disabling client {0} - Client never "

2616

"performed a successful checker"

2617

.format(client_name))

3186

"disabling client {} - Client never "

3187

"performed a successful checker".format(

3188

client_name))

2618

3189

client["enabled"] = False

2619

3190

elif client["last_checker_status"] != 0:

2620

3191

logger.warning(

2621

"disabling client {0} - Client "

2622

"last checker failed with error code {1}"

2623

.format(client_name,

2624

client["last_checker_status"]))

3192

"disabling client {} - Client last"

3193

" checker failed with error code"

3194

" {}".format(

3195

client_name,

3196

client["last_checker_status"]))

2625

3197

client["enabled"] = False

2626

3198

else:

2627

client["expires"] = (datetime.datetime

2628

.utcnow()

2629

+ client["timeout"])

3199

client["expires"] = (

3200

datetime.datetime.utcnow()

3201

+ client["timeout"])

2630

3202

logger.debug("Last checker succeeded,"

2631

" keeping {0} enabled"

2632

.format(client_name))

3203

" keeping {} enabled".format(

3204

client_name))

2633

3205

try:

2634

client["secret"] = (

2635

pgp.decrypt(client["encrypted_secret"],

2636

client_settings[client_name]

2637

["secret"]))

3206

client["secret"] = pgp.decrypt(

3207

client["encrypted_secret"],

3208

client_settings[client_name]["secret"])

2638

3209

except PGPError:

2639

3210

# If decryption fails, we use secret from new settings

2640

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

2641

.format(client_name))

2642

client["secret"] = (

2643

client_settings[client_name]["secret"])

2644

3211

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

3212

client_name))

3213

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

3214

["secret"])

3215

2645

3216

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

2646

3217

for client_name in (set(old_client_settings)

2647

3218

- set(client_settings)):

2649

3220

for client_name in (set(client_settings)

2650

3221

- set(old_client_settings)):

2651

3222

clients_data[client_name] = client_settings[client_name]

2652

3223

2653

3224

# Create all client objects

2654

for client_name, client in clients_data.iteritems():

3225

for client_name, client in clients_data.items():

2655

3226

tcp_server.clients[client_name] = client_class(

2656

name = client_name, settings = client,

2657

server_settings = server_settings)

2658

3227

name=client_name,

3228

settings=client,

3229

server_settings=server_settings)

3230

2659

3231

if not tcp_server.clients:

2660

3232

logger.warning("No clients defined")

2661

3233

2662

3234

if not foreground:

2663

3235

if pidfile is not None:

3236

pid = os.getpid()

2664

3237

try:

2665

3238

with pidfile:

2666

pid = os.getpid()

2667

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

3239

print(pid, file=pidfile)

2668

3240

except IOError:

2669

3241

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

2670

3242

pidfilename, pid)

2671

3243

del pidfile

2672

3244

del pidfilename

2673

2674

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

2675

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

2676

3245

3246

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

3247

GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,

3248

lambda: main_loop.quit() and False)

3249

2677

3250

if use_dbus:

2678

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

2679

"se.bsnet.fukt.Mandos"})

2680

class MandosDBusService(DBusObjectWithProperties):

3251

3252

@alternate_dbus_interfaces(

3253

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

3254

class MandosDBusService(DBusObjectWithObjectManager):

2681

3255

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

3256

2682

3257

def __init__(self):

2683

3258

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

3259

2684

3260

_interface = "se.recompile.Mandos"

2685

2686

@dbus_interface_annotations(_interface)

2687

def _foo(self):

2688

return { "org.freedesktop.DBus.Property"

2689

".EmitsChangedSignal":

2690

"false"}

2691

3261

2692

3262

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

2693

3263

def ClientAdded(self, objpath):

2694

3264

"D-Bus signal"

2695

3265

pass

2696

3266

2697

3267

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

2698

3268

def ClientNotFound(self, fingerprint, address):

2699

3269

"D-Bus signal"

2700

3270

pass

2701

3271

3272

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

3273

"true"})

2702

3274

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

2703

3275

def ClientRemoved(self, objpath, name):

2704

3276

"D-Bus signal"

2705

3277

pass

2706

3278

3279

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

3280

"true"})

2707

3281

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

2708

3282

def GetAllClients(self):

2709

3283

"D-Bus method"

2710

return dbus.Array(c.dbus_object_path

2711

for c in

2712

tcp_server.clients.itervalues())

2713

3284

return dbus.Array(c.dbus_object_path for c in

3285

tcp_server.clients.values())

3286

3287

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

3288

"true"})

2714

3289

@dbus.service.method(_interface,

2715

3290

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

2716

3291

def GetAllClientsWithProperties(self):

2717

3292

"D-Bus method"

2718

3293

return dbus.Dictionary(

2719

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

2720

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

3294

{c.dbus_object_path: c.GetAll(

3295

"se.recompile.Mandos.Client")

3296

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

2721

3297

signature="oa{sv}")

2722

3298

2723

3299

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

2724

3300

def RemoveClient(self, object_path):

2725

3301

"D-Bus method"

2726

for c in tcp_server.clients.itervalues():

3302

for c in tcp_server.clients.values():

2727

3303

if c.dbus_object_path == object_path:

2728

3304

del tcp_server.clients[c.name]

2729

3305

c.remove_from_connection()

2730

# Don't signal anything except ClientRemoved

3306

# Don't signal the disabling

2731

3307

c.disable(quiet=True)

2732

# Emit D-Bus signal

2733

self.ClientRemoved(object_path, c.name)

3308

# Emit D-Bus signal for removal

3309

self.client_removed_signal(c)

2734

3310

return

2735

3311

raise KeyError(object_path)

2736

3312

2737

3313

del _interface

2738

3314

3315

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

3316

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

3317

def GetManagedObjects(self):

3318

"""D-Bus method"""

3319

return dbus.Dictionary(

3320

{client.dbus_object_path:

3321

dbus.Dictionary(

3322

{interface: client.GetAll(interface)

3323

for interface in

3324

client._get_all_interface_names()})

3325

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

3326

3327

def client_added_signal(self, client):

3328

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

3329

if use_dbus:

3330

# New standard signal

3331

self.InterfacesAdded(

3332

client.dbus_object_path,

3333

dbus.Dictionary(

3334

{interface: client.GetAll(interface)

3335

for interface in

3336

client._get_all_interface_names()}))

3337

# Old signal

3338

self.ClientAdded(client.dbus_object_path)

3339

3340

def client_removed_signal(self, client):

3341

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

3342

if use_dbus:

3343

# New standard signal

3344

self.InterfacesRemoved(

3345

client.dbus_object_path,

3346

client._get_all_interface_names())

3347

# Old signal

3348

self.ClientRemoved(client.dbus_object_path,

3349

client.name)

3350

2739

3351

mandos_dbus_service = MandosDBusService()

2740

3352

3353

# Save modules to variables to exempt the modules from being

3354

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

3355

mp = multiprocessing

3356

wn = wnull

3357

2741

3358

def cleanup():

2742

3359

"Cleanup function; run on exit"

2743

service.cleanup()

2744

2745

multiprocessing.active_children()

2746

wnull.close()

3360

if zeroconf:

3361

service.cleanup()

3362

3363

mp.active_children()

3364

wn.close()

2747

3365

if not (tcp_server.clients or client_settings):

2748

3366

return

2749

3367

2750

3368

# Store client before exiting. Secrets are encrypted with key

2751

3369

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

2752

3370

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

2753

3371

clients = {}

2754

3372

with PGPEngine() as pgp:

2755

for client in tcp_server.clients.itervalues():

3373

for client in tcp_server.clients.values():

2756

3374

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

2757

3375

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

2758

3376

key)

2759

3377

client_dict = {}

2760

3378

2761

3379

# A list of attributes that can not be pickled

2762

3380

# + secret.

2763

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

2764

"checker", "server_settings"))

2765

for name, typ in (inspect.getmembers

2766

(dbus.service.Object)):

3381

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

3382

"checker", "server_settings"}

3383

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

3384

.Object):

2767

3385

exclude.add(name)

2768

3386

2769

3387

client_dict["encrypted_secret"] = (client

2770

3388

.encrypted_secret)

2771

3389

for attr in client.client_structure:

2772

3390

if attr not in exclude:

2773

3391

client_dict[attr] = getattr(client, attr)

2774

3392

2775

3393

clients[client.name] = client_dict

2776

3394

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

2777

3395

2778

3396

try:

2779

with (tempfile.NamedTemporaryFile

2780

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

2781

dir=os.path.dirname(stored_state_path),

2782

delete=False)) as stored_state:

2783

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

2784

tempname=stored_state.name

3397

with tempfile.NamedTemporaryFile(

3398

mode='wb',

3399

suffix=".pickle",

3400

prefix='clients-',

3401

dir=os.path.dirname(stored_state_path),

3402

delete=False) as stored_state:

3403

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

3404

protocol=2)

3405

tempname = stored_state.name

2785

3406

os.rename(tempname, stored_state_path)

2786

3407

except (IOError, OSError) as e:

2787

3408

if not debug:

2790

3411

except NameError:

2791

3412

pass

2792

3413

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

2793

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

3414

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

2794

3415

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

2795

3416

else:

2796

3417

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

2797

3418

exc_info=e)

2798

3419

raise

2799

3420

2800

3421

# Delete all clients, and settings from config

2801

3422

while tcp_server.clients:

2802

3423

name, client = tcp_server.clients.popitem()

2803

3424

if use_dbus:

2804

3425

client.remove_from_connection()

2805

# Don't signal anything except ClientRemoved

3426

# Don't signal the disabling

2806

3427

client.disable(quiet=True)

3428

# Emit D-Bus signal for removal

2807

3429

if use_dbus:

2808

# Emit D-Bus signal

2809

mandos_dbus_service.ClientRemoved(client

2810

.dbus_object_path,

2811

client.name)

3430

mandos_dbus_service.client_removed_signal(client)

2812

3431

client_settings.clear()

2813

3432

2814

3433

atexit.register(cleanup)

2815

2816

for client in tcp_server.clients.itervalues():

3434

3435

for client in tcp_server.clients.values():

2817

3436

if use_dbus:

2818

# Emit D-Bus signal

2819

mandos_dbus_service.ClientAdded(client.dbus_object_path)

3437

# Emit D-Bus signal for adding

3438

mandos_dbus_service.client_added_signal(client)

2820

3439

# Need to initiate checking of clients

2821

3440

if client.enabled:

2822

3441

client.init_checker()

2823

3442

2824

3443

tcp_server.enable()

2825

3444

tcp_server.server_activate()

2826

3445

2827

3446

# Find out what port we got

2828

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

3447

if zeroconf:

3448

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

2829

3449

if use_ipv6:

2830

3450

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

2831

3451

" flowinfo %d, scope_id %d",

2833

3453

else: # IPv4

2834

3454

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

2835

3455

*tcp_server.socket.getsockname())

2836

2837

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

2838

3456

3457

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

3458

2839

3459

try:

2840

# From the Avahi example code

2841

try:

2842

service.activate()

2843

except dbus.exceptions.DBusException as error:

2844

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

2845

cleanup()

2846

sys.exit(1)

2847

# End of Avahi example code

2848

2849

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

2850

lambda *args, **kwargs:

2851

(tcp_server.handle_request

2852

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

2853

3460

if zeroconf:

3461

# From the Avahi example code

3462

try:

3463

service.activate()

3464

except dbus.exceptions.DBusException as error:

3465

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

3466

cleanup()

3467

sys.exit(1)

3468

# End of Avahi example code

3469

3470

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

3471

lambda *args, **kwargs:

3472

(tcp_server.handle_request

3473

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

3474

2854

3475

logger.debug("Starting main loop")

2855

3476

main_loop.run()

2856

3477

except AvahiError as error:

2865

3486

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

2866

3487

cleanup()

2867

3488

3489

2868

3490

if __name__ == '__main__':

2869

3491

main()