/mandos/trunk : revision 237.4.85

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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 = "1.6.1"

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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)

270

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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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

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.GetAlternativeServiceName(self.name))

372

self.name = str(

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self.server.GetAlternativeServiceName(self.name))

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self.rename_count += 1

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

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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)

390

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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:

299

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

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"""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

426

if state == avahi.ENTRY_GROUP_ESTABLISHED:

331

427

logger.debug("Zeroconf service established.")

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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:

359

"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:

367

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, OSError) as error:

694

if (isinstance(error, OSError)

695

and error.errno != errno.ECHILD):

696

raise error

697

else:

698

if pid:

699

logger.warning("Checker was a zombie")

700

gobject.source_remove(self.checker_callback_tag)

701

self.checker_callback(pid, status,

702

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

703

1059

# Start a new checker if needed

704

1060

if self.checker is None:

705

1061

# Escape attributes for the shell

706

escaped_attrs = dict(

707

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

708

for attr in

709

self.runtime_expansions)

1062

escaped_attrs = {

1063

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

1064

for attr in self.runtime_expansions}

710

1065

try:

711

1066

command = self.checker_command % escaped_attrs

712

1067

except TypeError as error:

713

1068

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

714

self.checker_command, exc_info=error)

715

return True # Try again later

1069

self.checker_command,

1070

exc_info=error)

1071

return True # Try again later

716

1072

self.current_checker_command = command

717

try:

718

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

719

command, self.name)

720

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

721

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

722

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

723

# always replaced by /dev/null.)

724

# The exception is when not debugging but nevertheless

725

# running in the foreground; use the previously

726

# created wnull.

727

popen_args = {}

728

if (not self.server_settings["debug"]

729

and self.server_settings["foreground"]):

730

popen_args.update({"stdout": wnull,

731

"stderr": wnull })

732

self.checker = subprocess.Popen(command,

733

close_fds=True,

734

shell=True, cwd="/",

735

**popen_args)

736

except OSError as error:

737

logger.error("Failed to start subprocess",

738

exc_info=error)

739

return True

740

self.checker_callback_tag = (gobject.child_watch_add

741

(self.checker.pid,

742

self.checker_callback,

743

data=command))

744

# The checker may have completed before the gobject

745

# watch was added. Check for this.

746

try:

747

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

748

except OSError as error:

749

if error.errno == errno.ECHILD:

750

# This should never happen

751

logger.error("Child process vanished",

752

exc_info=error)

753

return True

754

raise

755

if pid:

756

gobject.source_remove(self.checker_callback_tag)

757

self.checker_callback(pid, status, command)

758

# 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

759

1099

return True

760

1100

761

1101

def stop_checker(self):

762

1102

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

763

1103

if self.checker_callback_tag:

764

gobject.source_remove(self.checker_callback_tag)

1104

GLib.source_remove(self.checker_callback_tag)

765

1105

self.checker_callback_tag = None

766

1106

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

767

1107

return

768

1108

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

769

try:

770

self.checker.terminate()

771

#time.sleep(0.5)

772

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

773

# self.checker.kill()

774

except OSError as error:

775

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

776

raise

1109

self.checker.terminate()

777

1110

self.checker = None

778

1111

779

1112

780

def dbus_service_property(dbus_interface, signature="v",

781

access="readwrite", byte_arrays=False):

1113

def dbus_service_property(dbus_interface,

1114

signature="v",

1115

access="readwrite",

1116

byte_arrays=False):

782

1117

"""Decorators for marking methods of a DBusObjectWithProperties to

783

1118

become properties on the D-Bus.

784

1119

785

1120

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

786

1121

and with one argument by "Set".

787

1122

788

1123

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

789

1124

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

790

1125

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

793

1128

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

794

1129

if byte_arrays and signature != "ay":

795

1130

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

796

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

1131

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

1132

797

1133

def decorator(func):

798

1134

func._dbus_is_property = True

799

1135

func._dbus_interface = dbus_interface

802

1138

func._dbus_name = func.__name__

803

1139

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

804

1140

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

805

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

1141

func._dbus_get_args_options = {'byte_arrays': byte_arrays}

806

1142

return func

1143

807

1144

return decorator

808

1145

809

1146

810

1147

def dbus_interface_annotations(dbus_interface):

811

1148

"""Decorator for marking functions returning interface annotations

812

1149

813

1150

Usage:

814

1151

815

1152

@dbus_interface_annotations("org.example.Interface")

816

1153

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

817

1154

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

818

1155

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

819

1156

"false"}

820

1157

"""

1158

821

1159

def decorator(func):

822

1160

func._dbus_is_interface = True

823

1161

func._dbus_interface = dbus_interface

824

1162

func._dbus_name = dbus_interface

825

1163

return func

1164

826

1165

return decorator

827

1166

828

1167

829

1168

def dbus_annotations(annotations):

830

1169

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

831

1170

Usage:

832

1171

1172

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

1173

"org.freedesktop.DBus.Property."

1174

"EmitsChangedSignal": "false"})

833

1175

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

834

1176

access="r")

835

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

836

"org.freedesktop.DBus.Property."

837

"EmitsChangedSignal": "false"})

838

1177

def Property_dbus_property(self):

839

1178

return dbus.Boolean(False)

1179

1180

See also the DBusObjectWithAnnotations class.

840

1181

"""

1182

841

1183

def decorator(func):

842

1184

func._dbus_annotations = annotations

843

1185

return func

1186

844

1187

return decorator

845

1188

846

1189

847

1190

class DBusPropertyException(dbus.exceptions.DBusException):

848

1191

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

849

1192

"""

850

def __unicode__(self):

851

return unicode(str(self))

1193

pass

852

1194

853

1195

854

1196

class DBusPropertyAccessException(DBusPropertyException):

863

1205

pass

864

1206

865

1207

866

class DBusObjectWithProperties(dbus.service.Object):

867

"""A D-Bus object with properties.

868

869

Classes inheriting from this can use the dbus_service_property

870

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

871

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.

872

1213

"""

873

1214

874

1215

@staticmethod

875

1216

def _is_dbus_thing(thing):

876

1217

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

877

1218

878

1219

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

879

1220

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

880

1221

"""

881

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

1222

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

882

1223

False)

883

1224

884

1225

def _get_all_dbus_things(self, thing):

885

1226

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

886

1227

"""

887

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

888

name),

1228

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

889

1229

athing.__get__(self))

890

1230

for cls in self.__class__.__mro__

891

1231

for name, athing in

892

inspect.getmembers(cls,

893

self._is_dbus_thing(thing)))

894

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

895

1305

def _get_dbus_property(self, interface_name, property_name):

896

1306

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

897

1307

property with the specified name and interface.

898

1308

"""

899

for cls in self.__class__.__mro__:

900

for name, value in (inspect.getmembers

901

(cls,

902

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")):

903

1312

if (value._dbus_name == property_name

904

1313

and value._dbus_interface == interface_name):

905

1314

return value.__get__(self)

906

1315

907

1316

# No such property

908

raise DBusPropertyNotFound(self.dbus_object_path + ":"

909

+ interface_name + "."

910

+ property_name)

911

912

@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",

913

1331

out_signature="v")

914

1332

def Get(self, interface_name, property_name):

915

1333

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

921

1339

if not hasattr(value, "variant_level"):

922

1340

return value

923

1341

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

924

1342

925

1343

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

926

1344

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

927

1345

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

933

1351

# The byte_arrays option is not supported yet on

934

1352

# signatures other than "ay".

935

1353

if prop._dbus_signature != "ay":

936

raise ValueError

1354

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

1355

"'ay' signature {!r}"

1356

.format(prop._dbus_signature))

937

1357

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

938

1358

for byte in value))

939

1359

prop(value)

940

941

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

1360

1361

@dbus.service.method(dbus.PROPERTIES_IFACE,

1362

in_signature="s",

942

1363

out_signature="a{sv}")

943

1364

def GetAll(self, interface_name):

944

1365

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

945

1366

standard.

946

1367

947

1368

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

948

1369

"""

949

1370

properties = {}

959

1380

if not hasattr(value, "variant_level"):

960

1381

properties[name] = value

961

1382

continue

962

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

963

value.variant_level+1)

1383

properties[name] = type(value)(

1384

value, variant_level=value.variant_level + 1)

964

1385

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

965

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

966

1395

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

967

1396

out_signature="s",

968

1397

path_keyword='object_path',

969

1398

connection_keyword='connection')

970

1399

def Introspect(self, object_path, connection):

971

1400

"""Overloading of standard D-Bus method.

972

1401

973

1402

Inserts property tags and interface annotation tags.

974

1403

"""

975

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

976

connection)

1404

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1405

object_path,

1406

connection)

977

1407

try:

978

1408

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

1409

979

1410

def make_tag(document, name, prop):

980

1411

e = document.createElement("property")

981

1412

e.setAttribute("name", name)

982

1413

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

983

1414

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

984

1415

return e

1416

985

1417

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

986

1418

# Add property tags

987

1419

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

990

1422

if prop._dbus_interface

991

1423

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

992

1424

if_tag.appendChild(tag)

993

# Add annotation tags

994

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

995

for tag in if_tag.getElementsByTagName(typ):

996

annots = dict()

997

for name, prop in (self.

998

_get_all_dbus_things(typ)):

999

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

1000

and prop._dbus_interface

1001

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

1002

annots.update(getattr

1003

(prop,

1004

"_dbus_annotations",

1005

{}))

1006

for name, value in annots.iteritems():

1007

ann_tag = document.createElement(

1008

"annotation")

1009

ann_tag.setAttribute("name", name)

1010

ann_tag.setAttribute("value", value)

1011

tag.appendChild(ann_tag)

1012

# Add interface annotation tags

1013

for annotation, value in dict(

1014

itertools.chain.from_iterable(

1015

annotations().iteritems()

1016

for name, annotations in

1017

self._get_all_dbus_things("interface")

1018

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

1019

)).iteritems():

1020

ann_tag = document.createElement("annotation")

1021

ann_tag.setAttribute("name", annotation)

1022

ann_tag.setAttribute("value", value)

1023

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)

1024

1441

# Add the names to the return values for the

1025

1442

# "org.freedesktop.DBus.Properties" methods

1026

1443

if (if_tag.getAttribute("name")

1044

1461

exc_info=error)

1045

1462

return xmlstring

1046

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

1047

1534

1048

1535

def datetime_to_dbus(dt, variant_level=0):

1049

1536

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

1050

1537

if dt is None:

1051

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

1052

return dbus.String(dt.isoformat(),

1053

variant_level=variant_level)

1538

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

1539

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

1054

1540

1055

1541

1056

1542

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1058

1544

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

1059

1545

interface names according to the "alt_interface_names" mapping.

1060

1546

Usage:

1061

1547

1062

1548

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

1063

1549

"net.example.AlternateInterface"})

1064

1550

class SampleDBusObject(dbus.service.Object):

1065

1551

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

1066

1552

def SampleDBusMethod():

1067

1553

pass

1068

1554

1069

1555

The above "SampleDBusMethod" on "SampleDBusObject" will be

1070

1556

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

1071

1557

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

1072

1558

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

1073

1559

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

1074

1560

1075

1561

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

1076

1562

(from DBusObjectWithProperties) and interfaces (from the

1077

1563

dbus_interface_annotations decorator).

1078

1564

"""

1565

1079

1566

def wrapper(cls):

1080

1567

for orig_interface_name, alt_interface_name in (

1081

alt_interface_names.iteritems()):

1568

alt_interface_names.items()):

1082

1569

attr = {}

1083

1570

interface_names = set()

1084

1571

# Go though all attributes of the class

1086

1573

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

1087

1574

# with the wrong interface name

1088

1575

if (not hasattr(attribute, "_dbus_interface")

1089

or not attribute._dbus_interface

1090

.startswith(orig_interface_name)):

1576

or not attribute._dbus_interface.startswith(

1577

orig_interface_name)):

1091

1578

continue

1092

1579

# Create an alternate D-Bus interface name based on

1093

1580

# the current name

1094

alt_interface = (attribute._dbus_interface

1095

.replace(orig_interface_name,

1096

alt_interface_name))

1581

alt_interface = attribute._dbus_interface.replace(

1582

orig_interface_name, alt_interface_name)

1097

1583

interface_names.add(alt_interface)

1098

1584

# Is this a D-Bus signal?

1099

1585

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

1100

1586

# Extract the original non-method undecorated

1101

1587

# function by black magic

1102

nonmethod_func = (dict(

1588

if sys.version_info.major == 2:

1589

nonmethod_func = (dict(

1103

1590

zip(attribute.func_code.co_freevars,

1104

attribute.__closure__))["func"]

1105

.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)

1106

1598

# Create a new, but exactly alike, function

1107

1599

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

1108

1600

# with the alternate D-Bus interface name

1109

new_function = (dbus.service.signal

1110

(alt_interface,

1111

attribute._dbus_signature)

1112

(types.FunctionType(

1113

nonmethod_func.func_code,

1114

nonmethod_func.func_globals,

1115

nonmethod_func.func_name,

1116

nonmethod_func.func_defaults,

1117

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))

1118

1605

# Copy annotations, if any

1119

1606

try:

1120

new_function._dbus_annotations = (

1121

dict(attribute._dbus_annotations))

1607

new_function._dbus_annotations = dict(

1608

attribute._dbus_annotations)

1122

1609

except AttributeError:

1123

1610

pass

1611

1124

1612

# Define a creator of a function to call both the

1125

1613

# original and alternate functions, so both the

1126

1614

# original and alternate signals gets sent when

1129

1617

"""This function is a scope container to pass

1130

1618

func1 and func2 to the "call_both" function

1131

1619

outside of its arguments"""

1620

1621

@functools.wraps(func2)

1132

1622

def call_both(*args, **kwargs):

1133

1623

"""This function will emit two D-Bus

1134

1624

signals by calling func1 and func2"""

1135

1625

func1(*args, **kwargs)

1136

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

1137

1633

return call_both

1138

1634

# Create the "call_both" function and add it to

1139

1635

# the class

1144

1640

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

1145

1641

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

1146

1642

# to the class.

1147

attr[attrname] = (dbus.service.method

1148

(alt_interface,

1149

attribute._dbus_in_signature,

1150

attribute._dbus_out_signature)

1151

(types.FunctionType

1152

(attribute.func_code,

1153

attribute.func_globals,

1154

attribute.func_name,

1155

attribute.func_defaults,

1156

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)))

1157

1649

# Copy annotations, if any

1158

1650

try:

1159

attr[attrname]._dbus_annotations = (

1160

dict(attribute._dbus_annotations))

1651

attr[attrname]._dbus_annotations = dict(

1652

attribute._dbus_annotations)

1161

1653

except AttributeError:

1162

1654

pass

1163

1655

# Is this a D-Bus property?

1166

1658

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

1167

1659

# property with the alternate D-Bus interface

1168

1660

# name. Add it to the class.

1169

attr[attrname] = (dbus_service_property

1170

(alt_interface,

1171

attribute._dbus_signature,

1172

attribute._dbus_access,

1173

attribute

1174

._dbus_get_args_options

1175

["byte_arrays"])

1176

(types.FunctionType

1177

(attribute.func_code,

1178

attribute.func_globals,

1179

attribute.func_name,

1180

attribute.func_defaults,

1181

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)))

1182

1667

# Copy annotations, if any

1183

1668

try:

1184

attr[attrname]._dbus_annotations = (

1185

dict(attribute._dbus_annotations))

1669

attr[attrname]._dbus_annotations = dict(

1670

attribute._dbus_annotations)

1186

1671

except AttributeError:

1187

1672

pass

1188

1673

# Is this a D-Bus interface?

1191

1676

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

1192

1677

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

1193

1678

# to the class.

1194

attr[attrname] = (dbus_interface_annotations

1195

(alt_interface)

1196

(types.FunctionType

1197

(attribute.func_code,

1198

attribute.func_globals,

1199

attribute.func_name,

1200

attribute.func_defaults,

1201

attribute.func_closure)))

1679

attr[attrname] = (

1680

dbus_interface_annotations(alt_interface)

1681

(copy_function(attribute)))

1202

1682

if deprecate:

1203

1683

# Deprecate all alternate interfaces

1204

iname="_AlternateDBusNames_interface_annotation{0}"

1684

iname = "_AlternateDBusNames_interface_annotation{}"

1205

1685

for interface_name in interface_names:

1686

1206

1687

@dbus_interface_annotations(interface_name)

1207

1688

def func(self):

1208

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

1209

"true" }

1689

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

1690

"true"}

1210

1691

# Find an unused name

1211

1692

for aname in (iname.format(i)

1212

1693

for i in itertools.count()):

1216

1697

if interface_names:

1217

1698

# Replace the class with a new subclass of it with

1218

1699

# methods, signals, etc. as created above.

1219

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

1220

(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)

1221

1706

return cls

1707

1222

1708

return wrapper

1223

1709

1224

1710

1225

1711

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

1226

"se.bsnet.fukt.Mandos"})

1712

"se.bsnet.fukt.Mandos"})

1227

1713

class ClientDBus(Client, DBusObjectWithProperties):

1228

1714

"""A Client class using D-Bus

1229

1715

1230

1716

Attributes:

1231

1717

dbus_object_path: dbus.ObjectPath

1232

1718

bus: dbus.SystemBus()

1233

1719

"""

1234

1720

1235

1721

runtime_expansions = (Client.runtime_expansions

1236

+ ("dbus_object_path",))

1237

1722

+ ("dbus_object_path", ))

1723

1724

_interface = "se.recompile.Mandos.Client"

1725

1238

1726

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

1239

1240

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

1727

1728

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

1241

1729

self.bus = bus

1242

1730

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

1243

1731

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

1244

1732

# the D-Bus

1245

client_object_name = unicode(self.name).translate(

1733

client_object_name = str(self.name).translate(

1246

1734

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

1247

1735

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

1248

self.dbus_object_path = (dbus.ObjectPath

1249

("/clients/" + client_object_name))

1736

self.dbus_object_path = dbus.ObjectPath(

1737

"/clients/" + client_object_name)

1250

1738

DBusObjectWithProperties.__init__(self, self.bus,

1251

1739

self.dbus_object_path)

1252

1253

def notifychangeproperty(transform_func,

1254

dbus_name, type_func=lambda x: x,

1255

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):

1256

1746

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

1257

1747

its changes to DBus.

1258

1748

1259

1749

transform_fun: Function that takes a value and a variant_level

1260

1750

and transforms it to a D-Bus type.

1261

1751

dbus_name: D-Bus name of the variable

1263

1753

to the D-Bus. Default: no transform

1264

1754

variant_level: D-Bus variant level. Default: 1

1265

1755

"""

1266

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

1756

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

1757

1267

1758

def setter(self, value):

1268

1759

if hasattr(self, "dbus_object_path"):

1269

1760

if (not hasattr(self, attrname) or

1270

1761

type_func(getattr(self, attrname, None))

1271

1762

!= type_func(value)):

1272

dbus_value = transform_func(type_func(value),

1273

variant_level

1274

=variant_level)

1275

self.PropertyChanged(dbus.String(dbus_name),

1276

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())

1277

1778

setattr(self, attrname, value)

1278

1779

1279

1780

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

1280

1781

1281

1782

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1282

1783

approvals_pending = notifychangeproperty(dbus.Boolean,

1283

1784

"ApprovalPending",

1284

type_func = bool)

1785

type_func=bool)

1285

1786

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

1286

1787

last_enabled = notifychangeproperty(datetime_to_dbus,

1287

1788

"LastEnabled")

1288

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

1289

type_func = lambda checker:

1290

checker is not None)

1789

checker = notifychangeproperty(

1790

dbus.Boolean, "CheckerRunning",

1791

type_func=lambda checker: checker is not None)

1291

1792

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1292

1793

"LastCheckedOK")

1293

1794

last_checker_status = notifychangeproperty(dbus.Int16,

1296

1797

datetime_to_dbus, "LastApprovalRequest")

1297

1798

approved_by_default = notifychangeproperty(dbus.Boolean,

1298

1799

"ApprovedByDefault")

1299

approval_delay = notifychangeproperty(dbus.UInt64,

1300

"ApprovalDelay",

1301

type_func =

1302

timedelta_to_milliseconds)

1800

approval_delay = notifychangeproperty(

1801

dbus.UInt64, "ApprovalDelay",

1802

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

1303

1803

approval_duration = notifychangeproperty(

1304

1804

dbus.UInt64, "ApprovalDuration",

1305

type_func = timedelta_to_milliseconds)

1805

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

1306

1806

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

1307

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

1308

type_func =

1309

timedelta_to_milliseconds)

1807

timeout = notifychangeproperty(

1808

dbus.UInt64, "Timeout",

1809

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

1310

1810

extended_timeout = notifychangeproperty(

1311

1811

dbus.UInt64, "ExtendedTimeout",

1312

type_func = timedelta_to_milliseconds)

1313

interval = notifychangeproperty(dbus.UInt64,

1314

"Interval",

1315

type_func =

1316

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)

1317

1816

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

1318

1817

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

1818

invalidate_only=True)

1819

1319

1820

del notifychangeproperty

1320

1821

1321

1822

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

1322

1823

try:

1323

1824

self.remove_from_connection()

1326

1827

if hasattr(DBusObjectWithProperties, "__del__"):

1327

1828

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

1328

1829

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

1329

1330

def checker_callback(self, pid, condition, command,

1331

*args, **kwargs):

1332

self.checker_callback_tag = None

1333

self.checker = None

1334

if os.WIFEXITED(condition):

1335

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:

1336

1838

# Emit D-Bus signal

1337

1839

self.CheckerCompleted(dbus.Int16(exitstatus),

1338

dbus.Int64(condition),

1840

# This is specific to GNU libC

1841

dbus.Int64(exitstatus << 8),

1339

1842

dbus.String(command))

1340

1843

else:

1341

1844

# Emit D-Bus signal

1342

1845

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

1343

dbus.Int64(condition),

1846

dbus.Int64(

1847

# This is specific to GNU libC

1848

(exitstatus << 8)

1849

| self.last_checker_signal),

1344

1850

dbus.String(command))

1345

1346

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

1347

*args, **kwargs)

1348

1851

return ret

1852

1349

1853

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

1350

old_checker = self.checker

1351

if self.checker is not None:

1352

old_checker_pid = self.checker.pid

1353

else:

1354

old_checker_pid = None

1854

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

1355

1855

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

1356

1856

# Only if new checker process was started

1357

1857

if (self.checker is not None

1359

1859

# Emit D-Bus signal

1360

1860

self.CheckerStarted(self.current_checker_command)

1361

1861

return r

1362

1862

1363

1863

def _reset_approved(self):

1364

1864

self.approved = None

1365

1865

return False

1366

1866

1367

1867

def approve(self, value=True):

1368

1868

self.approved = value

1369

gobject.timeout_add(timedelta_to_milliseconds

1370

(self.approval_duration),

1371

self._reset_approved)

1869

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

1870

* 1000), self._reset_approved)

1372

1871

self.send_changedstate()

1373

1374

## D-Bus methods, signals & properties

1375

_interface = "se.recompile.Mandos.Client"

1376

1377

## Interfaces

1378

1379

@dbus_interface_annotations(_interface)

1380

def _foo(self):

1381

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

1382

"false"}

1383

1384

## Signals

1385

1872

1873

# D-Bus methods, signals & properties

1874

1875

# Interfaces

1876

1877

# Signals

1878

1386

1879

# CheckerCompleted - signal

1387

1880

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

1388

1881

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

1389

1882

"D-Bus signal"

1390

1883

pass

1391

1884

1392

1885

# CheckerStarted - signal

1393

1886

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

1394

1887

def CheckerStarted(self, command):

1395

1888

"D-Bus signal"

1396

1889

pass

1397

1890

1398

1891

# PropertyChanged - signal

1892

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

1399

1893

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

1400

1894

def PropertyChanged(self, property, value):

1401

1895

"D-Bus signal"

1402

1896

pass

1403

1897

1404

1898

# GotSecret - signal

1405

1899

@dbus.service.signal(_interface)

1406

1900

def GotSecret(self):

1409

1903

server to mandos-client

1410

1904

"""

1411

1905

pass

1412

1906

1413

1907

# Rejected - signal

1414

1908

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

1415

1909

def Rejected(self, reason):

1416

1910

"D-Bus signal"

1417

1911

pass

1418

1912

1419

1913

# NeedApproval - signal

1420

1914

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

1421

1915

def NeedApproval(self, timeout, default):

1422

1916

"D-Bus signal"

1423

1917

return self.need_approval()

1424

1425

## Methods

1426

1918

1919

# Methods

1920

1427

1921

# Approve - method

1428

1922

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

1429

1923

def Approve(self, value):

1430

1924

self.approve(value)

1431

1925

1432

1926

# CheckedOK - method

1433

1927

@dbus.service.method(_interface)

1434

1928

def CheckedOK(self):

1435

1929

self.checked_ok()

1436

1930

1437

1931

# Enable - method

1932

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

1438

1933

@dbus.service.method(_interface)

1439

1934

def Enable(self):

1440

1935

"D-Bus method"

1441

1936

self.enable()

1442

1937

1443

1938

# StartChecker - method

1939

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

1444

1940

@dbus.service.method(_interface)

1445

1941

def StartChecker(self):

1446

1942

"D-Bus method"

1447

1943

self.start_checker()

1448

1944

1449

1945

# Disable - method

1946

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

1450

1947

@dbus.service.method(_interface)

1451

1948

def Disable(self):

1452

1949

"D-Bus method"

1453

1950

self.disable()

1454

1951

1455

1952

# StopChecker - method

1953

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

1456

1954

@dbus.service.method(_interface)

1457

1955

def StopChecker(self):

1458

1956

self.stop_checker()

1459

1460

## Properties

1461

1957

1958

# Properties

1959

1462

1960

# ApprovalPending - property

1463

1961

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

1464

1962

def ApprovalPending_dbus_property(self):

1465

1963

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

1466

1964

1467

1965

# ApprovedByDefault - property

1468

@dbus_service_property(_interface, signature="b",

1966

@dbus_service_property(_interface,

1967

signature="b",

1469

1968

access="readwrite")

1470

1969

def ApprovedByDefault_dbus_property(self, value=None):

1471

1970

if value is None: # get

1472

1971

return dbus.Boolean(self.approved_by_default)

1473

1972

self.approved_by_default = bool(value)

1474

1973

1475

1974

# ApprovalDelay - property

1476

@dbus_service_property(_interface, signature="t",

1975

@dbus_service_property(_interface,

1976

signature="t",

1477

1977

access="readwrite")

1478

1978

def ApprovalDelay_dbus_property(self, value=None):

1479

1979

if value is None: # get

1480

return dbus.UInt64(self.approval_delay_milliseconds())

1980

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

1981

* 1000)

1481

1982

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

1482

1983

1483

1984

# ApprovalDuration - property

1484

@dbus_service_property(_interface, signature="t",

1985

@dbus_service_property(_interface,

1986

signature="t",

1485

1987

access="readwrite")

1486

1988

def ApprovalDuration_dbus_property(self, value=None):

1487

1989

if value is None: # get

1488

return dbus.UInt64(timedelta_to_milliseconds(

1489

self.approval_duration))

1990

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

1991

* 1000)

1490

1992

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

1491

1993

1492

1994

# Name - property

1995

@dbus_annotations(

1996

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

1493

1997

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

1494

1998

def Name_dbus_property(self):

1495

1999

return dbus.String(self.name)

1496

2000

1497

2001

# Fingerprint - property

2002

@dbus_annotations(

2003

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

1498

2004

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

1499

2005

def Fingerprint_dbus_property(self):

1500

2006

return dbus.String(self.fingerprint)

1501

2007

1502

2008

# Host - property

1503

@dbus_service_property(_interface, signature="s",

2009

@dbus_service_property(_interface,

2010

signature="s",

1504

2011

access="readwrite")

1505

2012

def Host_dbus_property(self, value=None):

1506

2013

if value is None: # get

1507

2014

return dbus.String(self.host)

1508

self.host = unicode(value)

1509

2015

self.host = str(value)

2016

1510

2017

# Created - property

2018

@dbus_annotations(

2019

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

1511

2020

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

1512

2021

def Created_dbus_property(self):

1513

2022

return datetime_to_dbus(self.created)

1514

2023

1515

2024

# LastEnabled - property

1516

2025

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

1517

2026

def LastEnabled_dbus_property(self):

1518

2027

return datetime_to_dbus(self.last_enabled)

1519

2028

1520

2029

# Enabled - property

1521

@dbus_service_property(_interface, signature="b",

2030

@dbus_service_property(_interface,

2031

signature="b",

1522

2032

access="readwrite")

1523

2033

def Enabled_dbus_property(self, value=None):

1524

2034

if value is None: # get

1527

2037

self.enable()

1528

2038

else:

1529

2039

self.disable()

1530

2040

1531

2041

# LastCheckedOK - property

1532

@dbus_service_property(_interface, signature="s",

2042

@dbus_service_property(_interface,

2043

signature="s",

1533

2044

access="readwrite")

1534

2045

def LastCheckedOK_dbus_property(self, value=None):

1535

2046

if value is not None:

1536

2047

self.checked_ok()

1537

2048

return

1538

2049

return datetime_to_dbus(self.last_checked_ok)

1539

2050

1540

2051

# LastCheckerStatus - property

1541

@dbus_service_property(_interface, signature="n",

1542

access="read")

2052

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

1543

2053

def LastCheckerStatus_dbus_property(self):

1544

2054

return dbus.Int16(self.last_checker_status)

1545

2055

1546

2056

# Expires - property

1547

2057

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

1548

2058

def Expires_dbus_property(self):

1549

2059

return datetime_to_dbus(self.expires)

1550

2060

1551

2061

# LastApprovalRequest - property

1552

2062

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

1553

2063

def LastApprovalRequest_dbus_property(self):

1554

2064

return datetime_to_dbus(self.last_approval_request)

1555

2065

1556

2066

# Timeout - property

1557

@dbus_service_property(_interface, signature="t",

2067

@dbus_service_property(_interface,

2068

signature="t",

1558

2069

access="readwrite")

1559

2070

def Timeout_dbus_property(self, value=None):

1560

2071

if value is None: # get

1561

return dbus.UInt64(self.timeout_milliseconds())

2072

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

1562

2073

old_timeout = self.timeout

1563

2074

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

1564

2075

# Reschedule disabling

1572

2083

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

1573

2084

is None):

1574

2085

return

1575

gobject.source_remove(self.disable_initiator_tag)

1576

self.disable_initiator_tag = (

1577

gobject.timeout_add(

1578

timedelta_to_milliseconds(self.expires - now),

1579

self.disable))

1580

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

1581

2091

# ExtendedTimeout - property

1582

@dbus_service_property(_interface, signature="t",

2092

@dbus_service_property(_interface,

2093

signature="t",

1583

2094

access="readwrite")

1584

2095

def ExtendedTimeout_dbus_property(self, value=None):

1585

2096

if value is None: # get

1586

return dbus.UInt64(self.extended_timeout_milliseconds())

2097

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

2098

* 1000)

1587

2099

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

1588

2100

1589

2101

# Interval - property

1590

@dbus_service_property(_interface, signature="t",

2102

@dbus_service_property(_interface,

2103

signature="t",

1591

2104

access="readwrite")

1592

2105

def Interval_dbus_property(self, value=None):

1593

2106

if value is None: # get

1594

return dbus.UInt64(self.interval_milliseconds())

2107

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

1595

2108

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

1596

2109

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

1597

2110

return

1598

2111

if self.enabled:

1599

2112

# Reschedule checker run

1600

gobject.source_remove(self.checker_initiator_tag)

1601

self.checker_initiator_tag = (gobject.timeout_add

1602

(value, self.start_checker))

1603

self.start_checker() # Start one now, too

1604

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

1605

2118

# Checker - property

1606

@dbus_service_property(_interface, signature="s",

2119

@dbus_service_property(_interface,

2120

signature="s",

1607

2121

access="readwrite")

1608

2122

def Checker_dbus_property(self, value=None):

1609

2123

if value is None: # get

1610

2124

return dbus.String(self.checker_command)

1611

self.checker_command = unicode(value)

1612

2125

self.checker_command = str(value)

2126

1613

2127

# CheckerRunning - property

1614

@dbus_service_property(_interface, signature="b",

2128

@dbus_service_property(_interface,

2129

signature="b",

1615

2130

access="readwrite")

1616

2131

def CheckerRunning_dbus_property(self, value=None):

1617

2132

if value is None: # get

1620

2135

self.start_checker()

1621

2136

else:

1622

2137

self.stop_checker()

1623

2138

1624

2139

# ObjectPath - property

2140

@dbus_annotations(

2141

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

2142

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

1625

2143

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

1626

2144

def ObjectPath_dbus_property(self):

1627

return self.dbus_object_path # is already a dbus.ObjectPath

1628

2145

return self.dbus_object_path # is already a dbus.ObjectPath

2146

1629

2147

# Secret = property

1630

@dbus_service_property(_interface, signature="ay",

1631

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)

1632

2155

def Secret_dbus_property(self, value):

1633

self.secret = str(value)

1634

2156

self.secret = bytes(value)

2157

1635

2158

del _interface

1636

2159

1637

2160

1640

2163

self._pipe = child_pipe

1641

2164

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

1642

2165

if not self._pipe.recv():

1643

raise KeyError()

1644

2166

raise KeyError(fpr)

2167

1645

2168

def __getattribute__(self, name):

1646

2169

if name == '_pipe':

1647

2170

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

1650

2173

if data[0] == 'data':

1651

2174

return data[1]

1652

2175

if data[0] == 'function':

2176

1653

2177

def func(*args, **kwargs):

1654

2178

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

1655

2179

return self._pipe.recv()[1]

2180

1656

2181

return func

1657

2182

1658

2183

def __setattr__(self, name, value):

1659

2184

if name == '_pipe':

1660

2185

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

1663

2188

1664

2189

class ClientHandler(socketserver.BaseRequestHandler, object):

1665

2190

"""A class to handle client connections.

1666

2191

1667

2192

Instantiated once for each connection to handle it.

1668

2193

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

1669

2194

1670

2195

def handle(self):

1671

2196

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

1672

2197

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

1673

unicode(self.client_address))

2198

str(self.client_address))

1674

2199

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

1675

2200

self.server.child_pipe.fileno())

1676

1677

session = (gnutls.connection

1678

.ClientSession(self.request,

1679

gnutls.connection

1680

.X509Credentials()))

1681

1682

# Note: gnutls.connection.X509Credentials is really a

1683

# generic GnuTLS certificate credentials object so long as

1684

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

1685

# here despite using OpenPGP certificates.

1686

1687

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

1688

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

1689

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

1690

# "+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"))

1691

2208

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

1692

2209

priority = self.server.gnutls_priority

1693

2210

if priority is None:

1694

2211

priority = "NORMAL"

1695

(gnutls.library.functions

1696

.gnutls_priority_set_direct(session._c_object,

1697

priority, None))

1698

2212

gnutls.priority_set_direct(session._c_object,

2213

priority.encode("utf-8"),

2214

None)

2215

1699

2216

# Start communication using the Mandos protocol

1700

2217

# Get protocol number

1701

2218

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

1702

2219

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

1703

2220

try:

1704

2221

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

1705

raise RuntimeError

2222

raise RuntimeError(line)

1706

2223

except (ValueError, IndexError, RuntimeError) as error:

1707

2224

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

1708

2225

return

1709

2226

1710

2227

# Start GnuTLS connection

1711

2228

try:

1712

2229

session.handshake()

1713

except gnutls.errors.GNUTLSError as error:

2230

except gnutls.Error as error:

1714

2231

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

1715

2232

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

1716

2233

# established. Just abandon the request.

1717

2234

return

1718

2235

logger.debug("Handshake succeeded")

1719

2236

1720

2237

approval_required = False

1721

2238

try:

1722

2239

try:

1723

fpr = self.fingerprint(self.peer_certificate

1724

(session))

1725

except (TypeError,

1726

gnutls.errors.GNUTLSError) as error:

2240

fpr = self.fingerprint(

2241

self.peer_certificate(session))

2242

except (TypeError, gnutls.Error) as error:

1727

2243

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

1728

2244

return

1729

2245

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

1730

2246

1731

2247

try:

1732

2248

client = ProxyClient(child_pipe, fpr,

1733

2249

self.client_address)

1734

2250

except KeyError:

1735

2251

return

1736

2252

1737

2253

if client.approval_delay:

1738

2254

delay = client.approval_delay

1739

2255

client.approvals_pending += 1

1740

2256

approval_required = True

1741

2257

1742

2258

while True:

1743

2259

if not client.enabled:

1744

2260

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

1745

client.name)

2261

client.name)

1746

2262

if self.server.use_dbus:

1747

2263

# Emit D-Bus signal

1748

2264

client.Rejected("Disabled")

1749

2265

return

1750

2266

1751

2267

if client.approved or not client.approval_delay:

1752

#We are approved or approval is disabled

2268

# We are approved or approval is disabled

1753

2269

break

1754

2270

elif client.approved is None:

1755

2271

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

1757

2273

if self.server.use_dbus:

1758

2274

# Emit D-Bus signal

1759

2275

client.NeedApproval(

1760

client.approval_delay_milliseconds(),

1761

client.approved_by_default)

2276

client.approval_delay.total_seconds()

2277

* 1000, client.approved_by_default)

1762

2278

else:

1763

2279

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

1764

2280

client.name)

1766

2282

# Emit D-Bus signal

1767

2283

client.Rejected("Denied")

1768

2284

return

1769

1770

#wait until timeout or approved

2285

2286

# wait until timeout or approved

1771

2287

time = datetime.datetime.now()

1772

2288

client.changedstate.acquire()

1773

client.changedstate.wait(

1774

float(timedelta_to_milliseconds(delay)

1775

/ 1000))

2289

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

1776

2290

client.changedstate.release()

1777

2291

time2 = datetime.datetime.now()

1778

2292

if (time2 - time) >= delay:

1788

2302

break

1789

2303

else:

1790

2304

delay -= time2 - time

1791

1792

sent_size = 0

1793

while sent_size < len(client.secret):

1794

try:

1795

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

1796

except gnutls.errors.GNUTLSError as error:

1797

logger.warning("gnutls send failed",

1798

exc_info=error)

1799

return

1800

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

1801

sent, len(client.secret)

1802

- (sent_size + sent))

1803

sent_size += sent

1804

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

1805

2313

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

1806

2314

# bump the timeout using extended_timeout

1807

2315

client.bump_timeout(client.extended_timeout)

1808

2316

if self.server.use_dbus:

1809

2317

# Emit D-Bus signal

1810

2318

client.GotSecret()

1811

2319

1812

2320

finally:

1813

2321

if approval_required:

1814

2322

client.approvals_pending -= 1

1815

2323

try:

1816

2324

session.bye()

1817

except gnutls.errors.GNUTLSError as error:

2325

except gnutls.Error as error:

1818

2326

logger.warning("GnuTLS bye failed",

1819

2327

exc_info=error)

1820

2328

1821

2329

@staticmethod

1822

2330

def peer_certificate(session):

1823

2331

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

1824

2332

# If not an OpenPGP certificate...

1825

if (gnutls.library.functions

1826

.gnutls_certificate_type_get(session._c_object)

1827

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1828

# ...do the normal thing

1829

return session.peer_certificate

2333

if (gnutls.certificate_type_get(session._c_object)

2334

!= gnutls.CRT_OPENPGP):

2335

# ...return invalid data

2336

return b""

1830

2337

list_size = ctypes.c_uint(1)

1831

cert_list = (gnutls.library.functions

1832

.gnutls_certificate_get_peers

2338

cert_list = (gnutls.certificate_get_peers

1833

2339

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

1834

2340

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

1835

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

1836

" certificate")

2341

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

1837

2342

if list_size.value == 0:

1838

2343

return None

1839

2344

cert = cert_list[0]

1840

2345

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

1841

2346

1842

2347

@staticmethod

1843

2348

def fingerprint(openpgp):

1844

2349

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

1845

2350

# New GnuTLS "datum" with the OpenPGP public key

1846

datum = (gnutls.library.types

1847

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

1848

ctypes.POINTER

1849

(ctypes.c_ubyte)),

1850

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)))

1851

2355

# New empty GnuTLS certificate

1852

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1853

(gnutls.library.functions

1854

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

2356

crt = gnutls.openpgp_crt_t()

2357

gnutls.openpgp_crt_init(ctypes.byref(crt))

1855

2358

# Import the OpenPGP public key into the certificate

1856

(gnutls.library.functions

1857

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

1858

gnutls.library.constants

1859

.GNUTLS_OPENPGP_FMT_RAW))

2359

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

2360

gnutls.OPENPGP_FMT_RAW)

1860

2361

# Verify the self signature in the key

1861

2362

crtverify = ctypes.c_uint()

1862

(gnutls.library.functions

1863

.gnutls_openpgp_crt_verify_self(crt, 0,

1864

ctypes.byref(crtverify)))

2363

gnutls.openpgp_crt_verify_self(crt, 0,

2364

ctypes.byref(crtverify))

1865

2365

if crtverify.value != 0:

1866

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1867

raise (gnutls.errors.CertificateSecurityError

1868

("Verify failed"))

2366

gnutls.openpgp_crt_deinit(crt)

2367

raise gnutls.CertificateSecurityError("Verify failed")

1869

2368

# New buffer for the fingerprint

1870

2369

buf = ctypes.create_string_buffer(20)

1871

2370

buf_len = ctypes.c_size_t()

1872

2371

# Get the fingerprint from the certificate into the buffer

1873

(gnutls.library.functions

1874

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

1875

ctypes.byref(buf_len)))

2372

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

2373

ctypes.byref(buf_len))

1876

2374

# Deinit the certificate

1877

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

2375

gnutls.openpgp_crt_deinit(crt)

1878

2376

# Convert the buffer to a Python bytestring

1879

2377

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

1880

2378

# Convert the bytestring to hexadecimal notation

1884

2382

1885

2383

class MultiprocessingMixIn(object):

1886

2384

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

2385

1887

2386

def sub_process_main(self, request, address):

1888

2387

try:

1889

2388

self.finish_request(request, address)

1890

2389

except Exception:

1891

2390

self.handle_error(request, address)

1892

2391

self.close_request(request)

1893

2392

1894

2393

def process_request(self, request, address):

1895

2394

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

1896

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

1897

args = (request, address))

2395

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

2396

args=(request, address))

1898

2397

proc.start()

1899

2398

return proc

1900

2399

1901

2400

1902

2401

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

1903

2402

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

2403

1904

2404

def process_request(self, request, client_address):

1905

2405

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

1906

2406

1907

2407

This function creates a new pipe in self.pipe

1908

2408

"""

1909

2409

parent_pipe, self.child_pipe = multiprocessing.Pipe()

1910

2410

1911

2411

proc = MultiprocessingMixIn.process_request(self, request,

1912

2412

client_address)

1913

2413

self.child_pipe.close()

1914

2414

self.add_pipe(parent_pipe, proc)

1915

2415

1916

2416

def add_pipe(self, parent_pipe, proc):

1917

2417

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

1918

raise NotImplementedError

2418

raise NotImplementedError()

1919

2419

1920

2420

1921

2421

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

1922

2422

socketserver.TCPServer, object):

1923

2423

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

1924

2424

1925

2425

Attributes:

1926

2426

enabled: Boolean; whether this server is activated yet

1927

2427

interface: None or a network interface name (string)

1928

2428

use_ipv6: Boolean; to use IPv6 or not

1929

2429

"""

2430

1930

2431

def __init__(self, server_address, RequestHandlerClass,

1931

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

2432

interface=None,

2433

use_ipv6=True,

2434

socketfd=None):

1932

2435

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

1933

2436

creating a new one with socket.socket().

1934

2437

"""

1940

2443

self.socketfd = socketfd

1941

2444

# Save the original socket.socket() function

1942

2445

self.socket_socket = socket.socket

2446

1943

2447

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

1944

#

2448

#

1945

2449

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

1946

2450

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

1947

2451

# patching socket.socket.)

1948

#

2452

#

1949

2453

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

1950

2454

@functools.wraps(socket.socket)

1951

2455

def socket_wrapper(*args, **kwargs):

1963

2467

# socket_wrapper(), if socketfd was set.

1964

2468

socketserver.TCPServer.__init__(self, server_address,

1965

2469

RequestHandlerClass)

1966

2470

1967

2471

def server_bind(self):

1968

2472

"""This overrides the normal server_bind() function

1969

2473

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

1970

2474

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

2475

global SO_BINDTODEVICE

1971

2476

if self.interface is not None:

1972

2477

if SO_BINDTODEVICE is None:

1973

logger.error("SO_BINDTODEVICE does not exist;"

1974

" cannot bind to interface %s",

1975

self.interface)

1976

else:

1977

try:

1978

self.socket.setsockopt(socket.SOL_SOCKET,

1979

SO_BINDTODEVICE,

1980

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

1981

except socket.error as error:

1982

if error.errno == errno.EPERM:

1983

logger.error("No permission to bind to"

1984

" interface %s", self.interface)

1985

elif error.errno == errno.ENOPROTOOPT:

1986

logger.error("SO_BINDTODEVICE not available;"

1987

" cannot bind to interface %s",

1988

self.interface)

1989

elif error.errno == errno.ENODEV:

1990

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

1991

" cannot bind", self.interface)

1992

else:

1993

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

1994

2499

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

1995

2500

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

1996

2501

if not self.server_address[0]:

1997

2502

if self.address_family == socket.AF_INET6:

1998

any_address = "::" # in6addr_any

2503

any_address = "::" # in6addr_any

1999

2504

else:

2000

any_address = "0.0.0.0" # INADDR_ANY

2505

any_address = "0.0.0.0" # INADDR_ANY

2001

2506

self.server_address = (any_address,

2002

2507

self.server_address[1])

2003

2508

elif not self.server_address[1]:

2004

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

2005

0)

2509

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

2006

2510

# if self.interface:

2007

2511

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

2008

2512

# 0, # port

2014

2518

2015

2519

class MandosServer(IPv6_TCPServer):

2016

2520

"""Mandos server.

2017

2521

2018

2522

Attributes:

2019

2523

clients: set of Client objects

2020

2524

gnutls_priority GnuTLS priority string

2021

2525

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

2022

2023

Assumes a gobject.MainLoop event loop.

2526

2527

Assumes a GLib.MainLoop event loop.

2024

2528

"""

2529

2025

2530

def __init__(self, server_address, RequestHandlerClass,

2026

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

2027

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):

2028

2537

self.enabled = False

2029

2538

self.clients = clients

2030

2539

if self.clients is None:

2033

2542

self.gnutls_priority = gnutls_priority

2034

2543

IPv6_TCPServer.__init__(self, server_address,

2035

2544

RequestHandlerClass,

2036

interface = interface,

2037

use_ipv6 = use_ipv6,

2038

socketfd = socketfd)

2545

interface=interface,

2546

use_ipv6=use_ipv6,

2547

socketfd=socketfd)

2548

2039

2549

def server_activate(self):

2040

2550

if self.enabled:

2041

2551

return socketserver.TCPServer.server_activate(self)

2042

2552

2043

2553

def enable(self):

2044

2554

self.enabled = True

2045

2555

2046

2556

def add_pipe(self, parent_pipe, proc):

2047

2557

# Call "handle_ipc" for both data and EOF events

2048

gobject.io_add_watch(parent_pipe.fileno(),

2049

gobject.IO_IN | gobject.IO_HUP,

2050

functools.partial(self.handle_ipc,

2051

parent_pipe =

2052

parent_pipe,

2053

proc = proc))

2054

2055

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

2056

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):

2057

2569

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

2058

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

2570

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

2059

2571

# Wait for other process to exit

2060

2572

proc.join()

2061

2573

return False

2062

2574

2063

2575

# Read a request from the child

2064

2576

request = parent_pipe.recv()

2065

2577

command = request[0]

2066

2578

2067

2579

if command == 'init':

2068

2580

fpr = request[1]

2069

2581

address = request[2]

2070

2071

for c in self.clients.itervalues():

2582

2583

for c in self.clients.values():

2072

2584

if c.fingerprint == fpr:

2073

2585

client = c

2074

2586

break

2081

2593

address[0])

2082

2594

parent_pipe.send(False)

2083

2595

return False

2084

2085

gobject.io_add_watch(parent_pipe.fileno(),

2086

gobject.IO_IN | gobject.IO_HUP,

2087

functools.partial(self.handle_ipc,

2088

parent_pipe =

2089

parent_pipe,

2090

proc = proc,

2091

client_object =

2092

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))

2093

2604

parent_pipe.send(True)

2094

2605

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

2095

2606

# same fileno

2098

2609

funcname = request[1]

2099

2610

args = request[2]

2100

2611

kwargs = request[3]

2101

2612

2102

2613

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

2103

2614

funcname)(*args,

2104

**kwargs)))

2105

2615

**kwargs)))

2616

2106

2617

if command == 'getattr':

2107

2618

attrname = request[1]

2108

if callable(client_object.__getattribute__(attrname)):

2109

parent_pipe.send(('function',))

2619

if isinstance(client_object.__getattribute__(attrname),

2620

collections.Callable):

2621

parent_pipe.send(('function', ))

2110

2622

else:

2111

parent_pipe.send(('data', client_object

2112

.__getattribute__(attrname)))

2113

2623

parent_pipe.send((

2624

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

2625

2114

2626

if command == 'setattr':

2115

2627

attrname = request[1]

2116

2628

value = request[2]

2117

2629

setattr(client_object, attrname, value)

2118

2630

2119

2631

return True

2120

2632

2121

2633

2122

2634

def rfc3339_duration_to_delta(duration):

2123

2635

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

2124

2636

2125

2637

>>> rfc3339_duration_to_delta("P7D")

2126

2638

datetime.timedelta(7)

2127

2639

>>> rfc3339_duration_to_delta("PT60S")

2137

2649

>>> rfc3339_duration_to_delta("P1DT3M20S")

2138

2650

datetime.timedelta(1, 200)

2139

2651

"""

2140

2652

2141

2653

# Parsing an RFC 3339 duration with regular expressions is not

2142

2654

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

2143

2655

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

2144

2656

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

2145

2657

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

2146

2658

# avoid excessive use of external libraries.

2147

2659

2148

2660

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

2149

Token = collections.namedtuple("Token",

2150

("regexp", # To match token; if

2151

# "value" is not None,

2152

# must have a "group"

2153

# containing digits

2154

"value", # datetime.timedelta or

2155

# None

2156

"followers")) # Tokens valid after

2157

# 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

2158

2666

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

2159

2667

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

2160

2668

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

2161

2669

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

2162

2670

datetime.timedelta(seconds=1),

2163

frozenset((token_end,)))

2671

frozenset((token_end, )))

2164

2672

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

2165

2673

datetime.timedelta(minutes=1),

2166

2674

frozenset((token_second, token_end)))

2182

2690

frozenset((token_month, token_end)))

2183

2691

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

2184

2692

datetime.timedelta(weeks=1),

2185

frozenset((token_end,)))

2693

frozenset((token_end, )))

2186

2694

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

2187

2695

frozenset((token_year, token_month,

2188

2696

token_day, token_time,

2189

token_week))),

2190

# Define starting values

2191

value = datetime.timedelta() # Value so far

2697

token_week)))

2698

# Define starting values:

2699

# Value so far

2700

value = datetime.timedelta()

2192

2701

found_token = None

2193

followers = frozenset(token_duration,) # Following valid tokens

2194

s = duration # String left to parse

2702

# Following valid tokens

2703

followers = frozenset((token_duration, ))

2704

# String left to parse

2705

s = duration

2195

2706

# Loop until end token is found

2196

2707

while found_token is not token_end:

2197

2708

# Search for any currently valid tokens

2213

2724

break

2214

2725

else:

2215

2726

# No currently valid tokens were found

2216

raise ValueError("Invalid RFC 3339 duration")

2727

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

2728

.format(duration))

2217

2729

# End token found

2218

2730

return value

2219

2731

2220

2732

2221

2733

def string_to_delta(interval):

2222

2734

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

2223

2735

2224

2736

>>> string_to_delta('7d')

2225

2737

datetime.timedelta(7)

2226

2738

>>> string_to_delta('60s')

2234

2746

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

2235

2747

datetime.timedelta(0, 330)

2236

2748

"""

2237

2749

2238

2750

try:

2239

2751

return rfc3339_duration_to_delta(interval)

2240

2752

except ValueError:

2241

2753

pass

2242

2754

2243

2755

timevalue = datetime.timedelta(0)

2244

2756

for s in interval.split():

2245

2757

try:

2246

suffix = unicode(s[-1])

2758

suffix = s[-1]

2247

2759

value = int(s[:-1])

2248

2760

if suffix == "d":

2249

2761

delta = datetime.timedelta(value)

2256

2768

elif suffix == "w":

2257

2769

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

2258

2770

else:

2259

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

2260

.format(suffix))

2261

except (ValueError, IndexError) as e:

2771

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

2772

except IndexError as e:

2262

2773

raise ValueError(*(e.args))

2263

2774

timevalue += delta

2264

2775

return timevalue

2265

2776

2266

2777

2267

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

2778

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

2268

2779

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

2269

2780

2270

2781

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

2271

2782

if os.fork():

2272

2783

sys.exit()

2280

2791

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

2281

2792

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

2282

2793

raise OSError(errno.ENODEV,

2283

"{0} not a character device"

2794

"{} not a character device"

2284

2795

.format(os.devnull))

2285

2796

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

2286

2797

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

2290

2801

2291

2802

2292

2803

def main():

2293

2804

2294

2805

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

2295

2806

# Parsing of options, both command line and config file

2296

2807

2297

2808

parser = argparse.ArgumentParser()

2298

2809

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

2299

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

2810

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

2300

2811

help="show version number and exit")

2301

2812

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

2302

2813

help="Bind to interface IF")

2335

2846

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

2336

2847

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

2337

2848

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

2338

2849

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

2850

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

2851

default=None)

2852

2339

2853

options = parser.parse_args()

2340

2854

2341

2855

if options.check:

2342

2856

import doctest

2343

doctest.testmod()

2344

sys.exit()

2345

2857

fail_count, test_count = doctest.testmod()

2858

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

2859

2346

2860

# Default values for config file for server-global settings

2347

server_defaults = { "interface": "",

2348

"address": "",

2349

"port": "",

2350

"debug": "False",

2351

"priority":

2352

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

2353

"servicename": "Mandos",

2354

"use_dbus": "True",

2355

"use_ipv6": "True",

2356

"debuglevel": "",

2357

"restore": "True",

2358

"socket": "",

2359

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

2360

"foreground": "False",

2361

}

2362

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

2363

2879

# Parse config file for server-global settings

2364

2880

server_config = configparser.SafeConfigParser(server_defaults)

2365

2881

del server_defaults

2366

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

2367

"mandos.conf"))

2882

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

2368

2883

# Convert the SafeConfigParser object to a dict

2369

2884

server_settings = server_config.defaults()

2370

2885

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

2384

2899

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

2385

2900

["socket"])

2386

2901

del server_config

2387

2902

2388

2903

# Override the settings from the config file with command line

2389

2904

# options, if set.

2390

2905

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

2391

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

2392

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

2393

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

2906

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

2907

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

2908

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

2394

2909

value = getattr(options, option)

2395

2910

if value is not None:

2396

2911

server_settings[option] = value

2397

2912

del options

2398

2913

# Force all strings to be unicode

2399

2914

for option in server_settings.keys():

2400

if type(server_settings[option]) is str:

2401

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"))

2402

2918

# Force all boolean options to be boolean

2403

2919

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

2404

"foreground"):

2920

"foreground", "zeroconf"):

2405

2921

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

2406

2922

# Debug implies foreground

2407

2923

if server_settings["debug"]:

2408

2924

server_settings["foreground"] = True

2409

2925

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

2410

2926

2411

2927

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

2412

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

2413

2934

# For convenience

2414

2935

debug = server_settings["debug"]

2415

2936

debuglevel = server_settings["debuglevel"]

2418

2939

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

2419

2940

stored_state_file)

2420

2941

foreground = server_settings["foreground"]

2421

2942

zeroconf = server_settings["zeroconf"]

2943

2422

2944

if debug:

2423

2945

initlogger(debug, logging.DEBUG)

2424

2946

else:

2427

2949

else:

2428

2950

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

2429

2951

initlogger(debug, level)

2430

2952

2431

2953

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

2432

syslogger.setFormatter(logging.Formatter

2433

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

2434

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

2435

.format(server_settings

2436

["servicename"])))

2437

2954

syslogger.setFormatter(

2955

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

2956

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

2957

server_settings["servicename"])))

2958

2438

2959

# Parse config file with clients

2439

2960

client_config = configparser.SafeConfigParser(Client

2440

2961

.client_defaults)

2441

2962

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

2442

2963

"clients.conf"))

2443

2964

2444

2965

global mandos_dbus_service

2445

2966

mandos_dbus_service = None

2446

2447

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

2448

server_settings["port"]),

2449

ClientHandler,

2450

interface=(server_settings["interface"]

2451

or None),

2452

use_ipv6=use_ipv6,

2453

gnutls_priority=

2454

server_settings["priority"],

2455

use_dbus=use_dbus,

2456

socketfd=(server_settings["socket"]

2457

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)

2458

2979

if not foreground:

2459

2980

pidfilename = "/run/mandos.pid"

2981

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

2982

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

2460

2983

pidfile = None

2461

2984

try:

2462

pidfile = open(pidfilename, "w")

2985

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

2463

2986

except IOError as e:

2464

2987

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

2465

2988

exc_info=e)

2466

2467

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

2989

2990

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

2991

("mandos", "mandos"),

2992

("nobody", "nogroup")):

2468

2993

try:

2469

2994

uid = pwd.getpwnam(name).pw_uid

2470

gid = pwd.getpwnam(name).pw_gid

2995

gid = pwd.getpwnam(group).pw_gid

2471

2996

break

2472

2997

except KeyError:

2473

2998

continue

2477

3002

try:

2478

3003

os.setgid(gid)

2479

3004

os.setuid(uid)

3005

if debug:

3006

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

3007

gid))

2480

3008

except OSError as error:

3009

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

3010

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

2481

3011

if error.errno != errno.EPERM:

2482

raise error

2483

3012

raise

3013

2484

3014

if debug:

2485

3015

# Enable all possible GnuTLS debugging

2486

3016

2487

3017

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

2488

3018

# - GnuTLS manual

2489

gnutls.library.functions.gnutls_global_set_log_level(11)

2490

2491

@gnutls.library.types.gnutls_log_func

3019

gnutls.global_set_log_level(11)

3020

3021

@gnutls.log_func

2492

3022

def debug_gnutls(level, string):

2493

3023

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

2494

2495

(gnutls.library.functions

2496

.gnutls_global_set_log_function(debug_gnutls))

2497

3024

3025

gnutls.global_set_log_function(debug_gnutls)

3026

2498

3027

# Redirect stdin so all checkers get /dev/null

2499

3028

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

2500

3029

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

2501

3030

if null > 2:

2502

3031

os.close(null)

2503

3032

2504

3033

# Need to fork before connecting to D-Bus

2505

3034

if not foreground:

2506

3035

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

2507

3036

daemon()

2508

2509

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

2510

# need to inform gobject that threads will be used.

2511

gobject.threads_init()

2512

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

2513

3042

global main_loop

2514

3043

# From the Avahi example code

2515

3044

DBusGMainLoop(set_as_default=True)

2516

main_loop = gobject.MainLoop()

3045

main_loop = GLib.MainLoop()

2517

3046

bus = dbus.SystemBus()

2518

3047

# End of Avahi example code

2519

3048

if use_dbus:

2520

3049

try:

2521

3050

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

2522

bus, do_not_queue=True)

2523

old_bus_name = (dbus.service.BusName

2524

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

2525

do_not_queue=True))

2526

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:

2527

3057

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

2528

3058

use_dbus = False

2529

3059

server_settings["use_dbus"] = False

2530

3060

tcp_server.use_dbus = False

2531

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2532

service = AvahiServiceToSyslog(name =

2533

server_settings["servicename"],

2534

servicetype = "_mandos._tcp",

2535

protocol = protocol, bus = bus)

2536

if server_settings["interface"]:

2537

service.interface = (if_nametoindex

2538

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

2539

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

2540

3072

global multiprocessing_manager

2541

3073

multiprocessing_manager = multiprocessing.Manager()

2542

3074

2543

3075

client_class = Client

2544

3076

if use_dbus:

2545

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

2546

3077

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

3078

2547

3079

client_settings = Client.config_parser(client_config)

2548

3080

old_client_settings = {}

2549

3081

clients_data = {}

2550

3082

2551

3083

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

2552

3084

global wnull

2553

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

3085

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

2554

3086

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

2555

3087

# mode

2556

3088

if debug or not foreground:

2557

3089

wnull.close()

2558

3090

2559

3091

# Get client data and settings from last running state.

2560

3092

if server_settings["restore"]:

2561

3093

try:

2562

3094

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

2563

clients_data, old_client_settings = (pickle.load

2564

(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"))

2565

3140

os.remove(stored_state_path)

2566

3141

except IOError as e:

2567

3142

if e.errno == errno.ENOENT:

2568

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

2569

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

3143

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

3144

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

2570

3145

else:

2571

3146

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

2572

3147

exc_info=e)

2573

3148

raise

2574

3149

except EOFError as e:

2575

3150

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

2576

"EOFError:", exc_info=e)

2577

3151

"EOFError:",

3152

exc_info=e)

3153

2578

3154

with PGPEngine() as pgp:

2579

for client_name, client in clients_data.iteritems():

3155

for client_name, client in clients_data.items():

2580

3156

# Skip removed clients

2581

3157

if client_name not in client_settings:

2582

3158

continue

2583

3159

2584

3160

# Decide which value to use after restoring saved state.

2585

3161

# We have three different values: Old config file,

2586

3162

# new config file, and saved state.

2591

3167

# For each value in new config, check if it

2592

3168

# differs from the old config value (Except for

2593

3169

# the "secret" attribute)

2594

if (name != "secret" and

2595

value != old_client_settings[client_name]

2596

[name]):

3170

if (name != "secret"

3171

and (value !=

3172

old_client_settings[client_name][name])):

2597

3173

client[name] = value

2598

3174

except KeyError:

2599

3175

pass

2600

3176

2601

3177

# Clients who has passed its expire date can still be

2602

# enabled if its last checker was successful. Clients

3178

# enabled if its last checker was successful. A Client

2603

3179

# whose checker succeeded before we stored its state is

2604

3180

# assumed to have successfully run all checkers during

2605

3181

# downtime.

2607

3183

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

2608

3184

if not client["last_checked_ok"]:

2609

3185

logger.warning(

2610

"disabling client {0} - Client never "

2611

"performed a successful checker"

2612

.format(client_name))

3186

"disabling client {} - Client never "

3187

"performed a successful checker".format(

3188

client_name))

2613

3189

client["enabled"] = False

2614

3190

elif client["last_checker_status"] != 0:

2615

3191

logger.warning(

2616

"disabling client {0} - Client "

2617

"last checker failed with error code {1}"

2618

.format(client_name,

2619

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"]))

2620

3197

client["enabled"] = False

2621

3198

else:

2622

client["expires"] = (datetime.datetime

2623

.utcnow()

2624

+ client["timeout"])

3199

client["expires"] = (

3200

datetime.datetime.utcnow()

3201

+ client["timeout"])

2625

3202

logger.debug("Last checker succeeded,"

2626

" keeping {0} enabled"

2627

.format(client_name))

3203

" keeping {} enabled".format(

3204

client_name))

2628

3205

try:

2629

client["secret"] = (

2630

pgp.decrypt(client["encrypted_secret"],

2631

client_settings[client_name]

2632

["secret"]))

3206

client["secret"] = pgp.decrypt(

3207

client["encrypted_secret"],

3208

client_settings[client_name]["secret"])

2633

3209

except PGPError:

2634

3210

# If decryption fails, we use secret from new settings

2635

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

2636

.format(client_name))

2637

client["secret"] = (

2638

client_settings[client_name]["secret"])

2639

3211

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

3212

client_name))

3213

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

3214

["secret"])

3215

2640

3216

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

2641

3217

for client_name in (set(old_client_settings)

2642

3218

- set(client_settings)):

2644

3220

for client_name in (set(client_settings)

2645

3221

- set(old_client_settings)):

2646

3222

clients_data[client_name] = client_settings[client_name]

2647

3223

2648

3224

# Create all client objects

2649

for client_name, client in clients_data.iteritems():

3225

for client_name, client in clients_data.items():

2650

3226

tcp_server.clients[client_name] = client_class(

2651

name = client_name, settings = client,

2652

server_settings = server_settings)

2653

3227

name=client_name,

3228

settings=client,

3229

server_settings=server_settings)

3230

2654

3231

if not tcp_server.clients:

2655

3232

logger.warning("No clients defined")

2656

3233

2657

3234

if not foreground:

2658

3235

if pidfile is not None:

3236

pid = os.getpid()

2659

3237

try:

2660

3238

with pidfile:

2661

pid = os.getpid()

2662

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

3239

print(pid, file=pidfile)

2663

3240

except IOError:

2664

3241

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

2665

3242

pidfilename, pid)

2666

3243

del pidfile

2667

3244

del pidfilename

2668

2669

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

2670

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

2671

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

2672

3250

if use_dbus:

2673

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

2674

"se.bsnet.fukt.Mandos"})

2675

class MandosDBusService(DBusObjectWithProperties):

3251

3252

@alternate_dbus_interfaces(

3253

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

3254

class MandosDBusService(DBusObjectWithObjectManager):

2676

3255

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

3256

2677

3257

def __init__(self):

2678

3258

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

3259

2679

3260

_interface = "se.recompile.Mandos"

2680

2681

@dbus_interface_annotations(_interface)

2682

def _foo(self):

2683

return { "org.freedesktop.DBus.Property"

2684

".EmitsChangedSignal":

2685

"false"}

2686

3261

2687

3262

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

2688

3263

def ClientAdded(self, objpath):

2689

3264

"D-Bus signal"

2690

3265

pass

2691

3266

2692

3267

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

2693

3268

def ClientNotFound(self, fingerprint, address):

2694

3269

"D-Bus signal"

2695

3270

pass

2696

3271

3272

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

3273

"true"})

2697

3274

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

2698

3275

def ClientRemoved(self, objpath, name):

2699

3276

"D-Bus signal"

2700

3277

pass

2701

3278

3279

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

3280

"true"})

2702

3281

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

2703

3282

def GetAllClients(self):

2704

3283

"D-Bus method"

2705

return dbus.Array(c.dbus_object_path

2706

for c in

2707

tcp_server.clients.itervalues())

2708

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"})

2709

3289

@dbus.service.method(_interface,

2710

3290

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

2711

3291

def GetAllClientsWithProperties(self):

2712

3292

"D-Bus method"

2713

3293

return dbus.Dictionary(

2714

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

2715

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()},

2716

3297

signature="oa{sv}")

2717

3298

2718

3299

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

2719

3300

def RemoveClient(self, object_path):

2720

3301

"D-Bus method"

2721

for c in tcp_server.clients.itervalues():

3302

for c in tcp_server.clients.values():

2722

3303

if c.dbus_object_path == object_path:

2723

3304

del tcp_server.clients[c.name]

2724

3305

c.remove_from_connection()

2725

# Don't signal anything except ClientRemoved

3306

# Don't signal the disabling

2726

3307

c.disable(quiet=True)

2727

# Emit D-Bus signal

2728

self.ClientRemoved(object_path, c.name)

3308

# Emit D-Bus signal for removal

3309

self.client_removed_signal(c)

2729

3310

return

2730

3311

raise KeyError(object_path)

2731

3312

2732

3313

del _interface

2733

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

2734

3351

mandos_dbus_service = MandosDBusService()

2735

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

2736

3358

def cleanup():

2737

3359

"Cleanup function; run on exit"

2738

service.cleanup()

2739

2740

multiprocessing.active_children()

2741

wnull.close()

3360

if zeroconf:

3361

service.cleanup()

3362

3363

mp.active_children()

3364

wn.close()

2742

3365

if not (tcp_server.clients or client_settings):

2743

3366

return

2744

3367

2745

3368

# Store client before exiting. Secrets are encrypted with key

2746

3369

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

2747

3370

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

2748

3371

clients = {}

2749

3372

with PGPEngine() as pgp:

2750

for client in tcp_server.clients.itervalues():

3373

for client in tcp_server.clients.values():

2751

3374

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

2752

3375

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

2753

3376

key)

2754

3377

client_dict = {}

2755

3378

2756

3379

# A list of attributes that can not be pickled

2757

3380

# + secret.

2758

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

2759

"checker", "server_settings"))

2760

for name, typ in (inspect.getmembers

2761

(dbus.service.Object)):

3381

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

3382

"checker", "server_settings"}

3383

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

3384

.Object):

2762

3385

exclude.add(name)

2763

3386

2764

3387

client_dict["encrypted_secret"] = (client

2765

3388

.encrypted_secret)

2766

3389

for attr in client.client_structure:

2767

3390

if attr not in exclude:

2768

3391

client_dict[attr] = getattr(client, attr)

2769

3392

2770

3393

clients[client.name] = client_dict

2771

3394

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

2772

3395

2773

3396

try:

2774

with (tempfile.NamedTemporaryFile

2775

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

2776

dir=os.path.dirname(stored_state_path),

2777

delete=False)) as stored_state:

2778

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

2779

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

2780

3406

os.rename(tempname, stored_state_path)

2781

3407

except (IOError, OSError) as e:

2782

3408

if not debug:

2785

3411

except NameError:

2786

3412

pass

2787

3413

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

2788

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

3414

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

2789

3415

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

2790

3416

else:

2791

3417

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

2792

3418

exc_info=e)

2793

raise e

2794

3419

raise

3420

2795

3421

# Delete all clients, and settings from config

2796

3422

while tcp_server.clients:

2797

3423

name, client = tcp_server.clients.popitem()

2798

3424

if use_dbus:

2799

3425

client.remove_from_connection()

2800

# Don't signal anything except ClientRemoved

3426

# Don't signal the disabling

2801

3427

client.disable(quiet=True)

3428

# Emit D-Bus signal for removal

2802

3429

if use_dbus:

2803

# Emit D-Bus signal

2804

mandos_dbus_service.ClientRemoved(client

2805

.dbus_object_path,

2806

client.name)

3430

mandos_dbus_service.client_removed_signal(client)

2807

3431

client_settings.clear()

2808

3432

2809

3433

atexit.register(cleanup)

2810

2811

for client in tcp_server.clients.itervalues():

3434

3435

for client in tcp_server.clients.values():

2812

3436

if use_dbus:

2813

# Emit D-Bus signal

2814

mandos_dbus_service.ClientAdded(client.dbus_object_path)

3437

# Emit D-Bus signal for adding

3438

mandos_dbus_service.client_added_signal(client)

2815

3439

# Need to initiate checking of clients

2816

3440

if client.enabled:

2817

3441

client.init_checker()

2818

3442

2819

3443

tcp_server.enable()

2820

3444

tcp_server.server_activate()

2821

3445

2822

3446

# Find out what port we got

2823

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

3447

if zeroconf:

3448

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

2824

3449

if use_ipv6:

2825

3450

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

2826

3451

" flowinfo %d, scope_id %d",

2828

3453

else: # IPv4

2829

3454

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

2830

3455

*tcp_server.socket.getsockname())

2831

2832

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

2833

3456

3457

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

3458

2834

3459

try:

2835

# From the Avahi example code

2836

try:

2837

service.activate()

2838

except dbus.exceptions.DBusException as error:

2839

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

2840

cleanup()

2841

sys.exit(1)

2842

# End of Avahi example code

2843

2844

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

2845

lambda *args, **kwargs:

2846

(tcp_server.handle_request

2847

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

2848

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

2849

3475

logger.debug("Starting main loop")

2850

3476

main_loop.run()

2851

3477

except AvahiError as error:

2860

3486

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

2861

3487

cleanup()

2862

3488

3489

2863

3490

if __name__ == '__main__':

2864

3491

main()