/mandos/trunk : revision 624

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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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# This file is part of Mandos.

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#

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

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

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#

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

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

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

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# (at your option) any later version.

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#

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

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# WITHOUT ANY WARRANTY; without even the implied warranty of

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

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

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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

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# GNU General Public License for more details.

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#

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#

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

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

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#

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# along with this program. If not, see

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

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#

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

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#

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#

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from __future__ import (division, absolute_import, print_function,

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unicode_literals)

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try:

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from future_builtins import *

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except ImportError:

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pass

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from future_builtins import *

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try:

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import SocketServer as socketserver

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except ImportError:

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import socketserver

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import SocketServer as socketserver

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import socket

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import argparse

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import datetime

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import errno

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try:

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import ConfigParser as configparser

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except ImportError:

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import configparser

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import gnutls.crypto

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import gnutls.connection

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import gnutls.errors

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import gnutls.library.functions

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import gnutls.library.constants

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import gnutls.library.types

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import ConfigParser as configparser

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import sys

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import re

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import os

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import struct

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import fcntl

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import functools

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try:

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import cPickle as pickle

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except ImportError:

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import pickle

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import cPickle as pickle

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import multiprocessing

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import types

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import binascii

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import tempfile

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import itertools

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import collections

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import codecs

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import dbus

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import dbus.service

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from gi.repository import GLib

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import gobject

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import avahi

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from dbus.mainloop.glib import DBusGMainLoop

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import ctypes

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import ctypes.util

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import xml.dom.minidom

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import inspect

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# Try to find the value of SO_BINDTODEVICE:

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try:

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

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

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SO_BINDTODEVICE = socket.SO_BINDTODEVICE

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except AttributeError:

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try:

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# This is where SO_BINDTODEVICE was up to and including Python

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# 2.6, and also 3.2:

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from IN import SO_BINDTODEVICE

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except ImportError:

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

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# Try running the C preprocessor:

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try:

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

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"/dev/stdin"],

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stdin=subprocess.PIPE,

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stdout=subprocess.PIPE)

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stdout = cc.communicate(

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

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

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except (OSError, ValueError, IndexError):

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# No value found

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SO_BINDTODEVICE = None

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if sys.version_info.major == 2:

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str = unicode

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version = "1.7.16"

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SO_BINDTODEVICE = None

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version = "1.6.0"

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stored_state_file = "clients.pickle"

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logger = logging.getLogger()

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syslogger = None

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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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try:

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if_nametoindex = ctypes.cdll.LoadLibrary(

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

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if_nametoindex = (ctypes.cdll.LoadLibrary

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

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.if_nametoindex)

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except (OSError, AttributeError):

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def if_nametoindex(interface):

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

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

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

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ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

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

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

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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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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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'--homedir', self.tempdir,

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'--home', self.tempdir,

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'--force-mdc',

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'--quiet']

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

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

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

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'--quiet',

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'--no-use-agent']

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def __enter__(self):

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return self

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

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self._cleanup()

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return False

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def __del__(self):

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self._cleanup()

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def _cleanup(self):

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if self.tempdir is not None:

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# Delete contents of tempdir

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

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topdown=False):

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topdown = False):

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for filename in files:

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os.remove(os.path.join(root, filename))

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for dirname in dirs:

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# Remove tempdir

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os.rmdir(self.tempdir)

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self.tempdir = None

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def password_encode(self, password):

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# Passphrase can not be empty and can not contain newlines or

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# NUL bytes. So we prefix it and hex encode it.

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

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if len(encoded) > 2048:

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

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

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

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

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return encoded

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return b"mandos" + binascii.hexlify(password)

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def encrypt(self, data, password):

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passphrase = self.password_encode(password)

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with tempfile.NamedTemporaryFile(

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dir=self.tempdir) as passfile:

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with tempfile.NamedTemporaryFile(dir=self.tempdir

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) as passfile:

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passfile.write(passphrase)

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passfile.flush()

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

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

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'--passphrase-file',

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passfile.name]

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+ self.gnupgargs,

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stdin=subprocess.PIPE,

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stdout=subprocess.PIPE,

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stderr=subprocess.PIPE)

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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(

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dir=self.tempdir) as passfile:

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with tempfile.NamedTemporaryFile(dir = self.tempdir

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) as passfile:

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passfile.write(passphrase)

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passfile.flush()

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

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

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'--passphrase-file',

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passfile.name]

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+ self.gnupgargs,

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stdin=subprocess.PIPE,

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stdout=subprocess.PIPE,

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stderr=subprocess.PIPE)

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

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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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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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303

304

215

class AvahiError(Exception):

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

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217

self.value = value

307

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

308

**kwargs)

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

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def __unicode__(self):

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return unicode(repr(self.value))

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class AvahiServiceError(AvahiError):

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pass

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class AvahiGroupError(AvahiError):

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pass

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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,

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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,

350

bus=None):

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

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

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

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protocol = avahi.PROTO_UNSPEC, bus = None):

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self.interface = interface

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self.name = name

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self.type = servicetype

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self.server = None

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self.bus = bus

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self.entry_group_state_changed_match = None

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366

def rename(self, remove=True):

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def rename(self):

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

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if self.rename_count >= self.max_renames:

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272

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

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273

" after %i retries, exiting.",

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274

self.rename_count)

372

275

raise AvahiServiceError("Too many renames")

373

self.name = str(

374

self.server.GetAlternativeServiceName(self.name))

375

self.rename_count += 1

276

self.name = unicode(self.server

277

.GetAlternativeServiceName(self.name))

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278

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

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279

self.name)

378

if remove:

379

self.remove()

280

self.remove()

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try:

381

282

self.add()

382

283

except dbus.exceptions.DBusException as error:

383

if (error.get_dbus_name()

384

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

385

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

386

return self.rename(remove=False)

387

else:

388

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

389

self.cleanup()

390

os._exit(1)

391

284

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

285

self.cleanup()

286

os._exit(1)

287

self.rename_count += 1

288

392

289

def remove(self):

393

290

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

394

291

if self.entry_group_state_changed_match is not None:

396

293

self.entry_group_state_changed_match = None

397

294

if self.group is not None:

398

295

self.group.Reset()

399

296

400

297

def add(self):

401

298

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

402

299

self.remove()

419

316

dbus.UInt16(self.port),

420

317

avahi.string_array_to_txt_array(self.TXT))

421

318

self.group.Commit()

422

319

423

320

def entry_group_state_changed(self, state, error):

424

321

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

425

322

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

426

323

427

324

if state == avahi.ENTRY_GROUP_ESTABLISHED:

428

325

logger.debug("Zeroconf service established.")

429

326

elif state == avahi.ENTRY_GROUP_COLLISION:

431

328

self.rename()

432

329

elif state == avahi.ENTRY_GROUP_FAILURE:

433

330

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

434

str(error))

435

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

436

331

unicode(error))

332

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

333

.format(error))

334

437

335

def cleanup(self):

438

336

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

439

337

if self.group is not None:

444

342

pass

445

343

self.group = None

446

344

self.remove()

447

345

448

346

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

449

347

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

450

348

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

451

bad_states = {

452

avahi.SERVER_INVALID: "Zeroconf server invalid",

453

avahi.SERVER_REGISTERING: None,

454

avahi.SERVER_COLLISION: "Zeroconf server name collision",

455

avahi.SERVER_FAILURE: "Zeroconf server failure",

456

}

349

bad_states = { avahi.SERVER_INVALID:

350

"Zeroconf server invalid",

351

avahi.SERVER_REGISTERING: None,

352

avahi.SERVER_COLLISION:

353

"Zeroconf server name collision",

354

avahi.SERVER_FAILURE:

355

"Zeroconf server failure" }

457

356

if state in bad_states:

458

357

if bad_states[state] is not None:

459

358

if error is None:

462

361

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

463

362

self.cleanup()

464

363

elif state == avahi.SERVER_RUNNING:

465

try:

466

self.add()

467

except dbus.exceptions.DBusException as error:

468

if (error.get_dbus_name()

469

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

470

logger.info("Local Zeroconf service name"

471

" collision.")

472

return self.rename(remove=False)

473

else:

474

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

475

self.cleanup()

476

os._exit(1)

364

self.add()

477

365

else:

478

366

if error is None:

479

367

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

480

368

else:

481

369

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

482

370

483

371

def activate(self):

484

372

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

485

373

if self.server is None:

489

377

follow_name_owner_changes=True),

490

378

avahi.DBUS_INTERFACE_SERVER)

491

379

self.server.connect_to_signal("StateChanged",

492

self.server_state_changed)

380

self.server_state_changed)

493

381

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

494

382

495

383

496

384

class AvahiServiceToSyslog(AvahiService):

497

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

385

def rename(self):

498

386

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

499

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

500

**kwargs)

501

syslogger.setFormatter(logging.Formatter(

502

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

503

.format(self.name)))

387

ret = AvahiService.rename(self)

388

syslogger.setFormatter(logging.Formatter

389

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

390

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

391

.format(self.name)))

504

392

return ret

505

393

506

394

507

# Pretend that we have a GnuTLS module

508

class GnuTLS(object):

509

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

510

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

511

512

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

513

if library is None:

514

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

515

_library = ctypes.cdll.LoadLibrary(library)

516

del library

517

_need_version = b"3.3.0"

518

519

def __init__(self):

520

# Need to use "self" here, since this method is called before

521

# the assignment to the "gnutls" global variable happens.

522

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

523

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

524

.format(self._need_version))

525

526

# Unless otherwise indicated, the constants and types below are

527

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

528

529

# Constants

530

E_SUCCESS = 0

531

E_INTERRUPTED = -52

532

E_AGAIN = -28

533

CRT_OPENPGP = 2

534

CLIENT = 2

535

SHUT_RDWR = 0

536

CRD_CERTIFICATE = 1

537

E_NO_CERTIFICATE_FOUND = -49

538

OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h

539

540

# Types

541

class session_int(ctypes.Structure):

542

_fields_ = []

543

session_t = ctypes.POINTER(session_int)

544

545

class certificate_credentials_st(ctypes.Structure):

546

_fields_ = []

547

certificate_credentials_t = ctypes.POINTER(

548

certificate_credentials_st)

549

certificate_type_t = ctypes.c_int

550

551

class datum_t(ctypes.Structure):

552

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

553

('size', ctypes.c_uint)]

554

555

class openpgp_crt_int(ctypes.Structure):

556

_fields_ = []

557

openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)

558

openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h

559

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

560

credentials_type_t = ctypes.c_int

561

transport_ptr_t = ctypes.c_void_p

562

close_request_t = ctypes.c_int

563

564

# Exceptions

565

class Error(Exception):

566

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

567

# exception might be raised from within GnuTLS.__init__,

568

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

569

# global variable has happened.

570

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

571

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

572

# code is passed, convert it to a string with

573

# gnutls.strerror()

574

self.code = code

575

if message is None and code is not None:

576

message = GnuTLS.strerror(code)

577

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

578

message, *args)

579

580

class CertificateSecurityError(Error):

581

pass

582

583

# Classes

584

class Credentials(object):

585

def __init__(self):

586

self._c_object = gnutls.certificate_credentials_t()

587

gnutls.certificate_allocate_credentials(

588

ctypes.byref(self._c_object))

589

self.type = gnutls.CRD_CERTIFICATE

590

591

def __del__(self):

592

gnutls.certificate_free_credentials(self._c_object)

593

594

class ClientSession(object):

595

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

596

self._c_object = gnutls.session_t()

597

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

598

gnutls.set_default_priority(self._c_object)

599

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

600

gnutls.handshake_set_private_extensions(self._c_object,

601

True)

602

self.socket = socket

603

if credentials is None:

604

credentials = gnutls.Credentials()

605

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

606

ctypes.cast(credentials._c_object,

607

ctypes.c_void_p))

608

self.credentials = credentials

609

610

def __del__(self):

611

gnutls.deinit(self._c_object)

612

613

def handshake(self):

614

return gnutls.handshake(self._c_object)

615

616

def send(self, data):

617

data = bytes(data)

618

data_len = len(data)

619

while data_len > 0:

620

data_len -= gnutls.record_send(self._c_object,

621

data[-data_len:],

622

data_len)

623

624

def bye(self):

625

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

626

627

# Error handling functions

628

def _error_code(result):

629

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

630

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

631

if result >= 0:

632

return result

633

if result == gnutls.E_NO_CERTIFICATE_FOUND:

634

raise gnutls.CertificateSecurityError(code=result)

635

raise gnutls.Error(code=result)

636

637

def _retry_on_error(result, func, arguments):

638

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

639

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

640

while result < 0:

641

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

642

return _error_code(result)

643

result = func(*arguments)

644

return result

645

646

# Unless otherwise indicated, the function declarations below are

647

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

648

649

# Functions

650

priority_set_direct = _library.gnutls_priority_set_direct

651

priority_set_direct.argtypes = [session_t, ctypes.c_char_p,

652

ctypes.POINTER(ctypes.c_char_p)]

653

priority_set_direct.restype = _error_code

654

655

init = _library.gnutls_init

656

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

657

init.restype = _error_code

658

659

set_default_priority = _library.gnutls_set_default_priority

660

set_default_priority.argtypes = [session_t]

661

set_default_priority.restype = _error_code

662

663

record_send = _library.gnutls_record_send

664

record_send.argtypes = [session_t, ctypes.c_void_p,

665

ctypes.c_size_t]

666

record_send.restype = ctypes.c_ssize_t

667

record_send.errcheck = _retry_on_error

668

669

certificate_allocate_credentials = (

670

_library.gnutls_certificate_allocate_credentials)

671

certificate_allocate_credentials.argtypes = [

672

ctypes.POINTER(certificate_credentials_t)]

673

certificate_allocate_credentials.restype = _error_code

674

675

certificate_free_credentials = (

676

_library.gnutls_certificate_free_credentials)

677

certificate_free_credentials.argtypes = [

678

certificate_credentials_t]

679

certificate_free_credentials.restype = None

680

681

handshake_set_private_extensions = (

682

_library.gnutls_handshake_set_private_extensions)

683

handshake_set_private_extensions.argtypes = [session_t,

684

ctypes.c_int]

685

handshake_set_private_extensions.restype = None

686

687

credentials_set = _library.gnutls_credentials_set

688

credentials_set.argtypes = [session_t, credentials_type_t,

689

ctypes.c_void_p]

690

credentials_set.restype = _error_code

691

692

strerror = _library.gnutls_strerror

693

strerror.argtypes = [ctypes.c_int]

694

strerror.restype = ctypes.c_char_p

695

696

certificate_type_get = _library.gnutls_certificate_type_get

697

certificate_type_get.argtypes = [session_t]

698

certificate_type_get.restype = _error_code

699

700

certificate_get_peers = _library.gnutls_certificate_get_peers

701

certificate_get_peers.argtypes = [session_t,

702

ctypes.POINTER(ctypes.c_uint)]

703

certificate_get_peers.restype = ctypes.POINTER(datum_t)

704

705

global_set_log_level = _library.gnutls_global_set_log_level

706

global_set_log_level.argtypes = [ctypes.c_int]

707

global_set_log_level.restype = None

708

709

global_set_log_function = _library.gnutls_global_set_log_function

710

global_set_log_function.argtypes = [log_func]

711

global_set_log_function.restype = None

712

713

deinit = _library.gnutls_deinit

714

deinit.argtypes = [session_t]

715

deinit.restype = None

716

717

handshake = _library.gnutls_handshake

718

handshake.argtypes = [session_t]

719

handshake.restype = _error_code

720

handshake.errcheck = _retry_on_error

721

722

transport_set_ptr = _library.gnutls_transport_set_ptr

723

transport_set_ptr.argtypes = [session_t, transport_ptr_t]

724

transport_set_ptr.restype = None

725

726

bye = _library.gnutls_bye

727

bye.argtypes = [session_t, close_request_t]

728

bye.restype = _error_code

729

bye.errcheck = _retry_on_error

730

731

check_version = _library.gnutls_check_version

732

check_version.argtypes = [ctypes.c_char_p]

733

check_version.restype = ctypes.c_char_p

734

735

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

736

737

openpgp_crt_init = _library.gnutls_openpgp_crt_init

738

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

739

openpgp_crt_init.restype = _error_code

740

741

openpgp_crt_import = _library.gnutls_openpgp_crt_import

742

openpgp_crt_import.argtypes = [openpgp_crt_t,

743

ctypes.POINTER(datum_t),

744

openpgp_crt_fmt_t]

745

openpgp_crt_import.restype = _error_code

746

747

openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self

748

openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,

749

ctypes.POINTER(ctypes.c_uint)]

750

openpgp_crt_verify_self.restype = _error_code

751

752

openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit

753

openpgp_crt_deinit.argtypes = [openpgp_crt_t]

754

openpgp_crt_deinit.restype = None

755

756

openpgp_crt_get_fingerprint = (

757

_library.gnutls_openpgp_crt_get_fingerprint)

758

openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,

759

ctypes.c_void_p,

760

ctypes.POINTER(

761

ctypes.c_size_t)]

762

openpgp_crt_get_fingerprint.restype = _error_code

763

764

# Remove non-public functions

765

del _error_code, _retry_on_error

766

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

767

gnutls = GnuTLS()

768

769

770

def call_pipe(connection, # : multiprocessing.Connection

771

func, *args, **kwargs):

772

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

773

774

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

775

return value on the provided multiprocessing.Connection.

776

"""

777

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

778

connection.close()

395

def timedelta_to_milliseconds(td):

396

"Convert a datetime.timedelta() to milliseconds"

397

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

398

+ (td.seconds * 1000)

399

+ (td.microseconds // 1000))

779

400

780

401

781

402

class Client(object):

782

403

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

783

404

784

405

Attributes:

785

406

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

786

407

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

788

409

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

789

410

to see if the client lives.

790

411

'None' if no process is running.

791

checker_callback_tag: a GLib event source tag, or None

412

checker_callback_tag: a gobject event source tag, or None

792

413

checker_command: string; External command which is run to check

793

414

if client lives. %() expansions are done at

794

415

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

795

416

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

796

checker_initiator_tag: a GLib event source tag, or None

417

checker_initiator_tag: a gobject event source tag, or None

797

418

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

798

419

client_structure: Object describing what attributes a client has

799

420

and is used for storing the client at exit

800

421

current_checker_command: string; current running checker_command

801

disable_initiator_tag: a GLib event source tag, or None

422

disable_initiator_tag: a gobject event source tag, or None

802

423

enabled: bool()

803

424

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

804

425

uniquely identify the client

809

430

last_checker_status: integer between 0 and 255 reflecting exit

810

431

status of last checker. -1 reflects crashed

811

432

checker, -2 means no checker completed yet.

812

last_checker_signal: The signal which killed the last checker, if

813

last_checker_status is -1

814

433

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

815

434

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

816

435

D-Bus identifiers

823

442

disabled, or None

824

443

server_settings: The server_settings dict from main()

825

444

"""

826

445

827

446

runtime_expansions = ("approval_delay", "approval_duration",

828

447

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

829

448

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

830

449

"last_approval_request", "last_checked_ok",

831

450

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

832

client_defaults = {

833

"timeout": "PT5M",

834

"extended_timeout": "PT15M",

835

"interval": "PT2M",

836

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

837

"host": "",

838

"approval_delay": "PT0S",

839

"approval_duration": "PT1S",

840

"approved_by_default": "True",

841

"enabled": "True",

842

}

843

451

client_defaults = { "timeout": "PT5M",

452

"extended_timeout": "PT15M",

453

"interval": "PT2M",

454

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

455

"host": "",

456

"approval_delay": "PT0S",

457

"approval_duration": "PT1S",

458

"approved_by_default": "True",

459

"enabled": "True",

460

}

461

462

def timeout_milliseconds(self):

463

"Return the 'timeout' attribute in milliseconds"

464

return timedelta_to_milliseconds(self.timeout)

465

466

def extended_timeout_milliseconds(self):

467

"Return the 'extended_timeout' attribute in milliseconds"

468

return timedelta_to_milliseconds(self.extended_timeout)

469

470

def interval_milliseconds(self):

471

"Return the 'interval' attribute in milliseconds"

472

return timedelta_to_milliseconds(self.interval)

473

474

def approval_delay_milliseconds(self):

475

return timedelta_to_milliseconds(self.approval_delay)

476

844

477

@staticmethod

845

478

def config_parser(config):

846

479

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

853

486

for client_name in config.sections():

854

487

section = dict(config.items(client_name))

855

488

client = settings[client_name] = {}

856

489

857

490

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

858

491

# Reformat values from string types to Python types

859

492

client["approved_by_default"] = config.getboolean(

860

493

client_name, "approved_by_default")

861

494

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

862

495

"enabled")

863

864

# Uppercase and remove spaces from fingerprint for later

865

# comparison purposes with return value from the

866

# fingerprint() function

496

867

497

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

868

498

.replace(" ", ""))

869

499

if "secret" in section:

870

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

871

.encode("utf-8"),

872

"base64")

500

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

873

501

elif "secfile" in section:

874

502

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

875

503

(section["secfile"])),

876

504

"rb") as secfile:

877

505

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

878

506

else:

879

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

507

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

880

508

.format(section))

881

509

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

882

510

client["extended_timeout"] = string_to_delta(

890

518

client["last_approval_request"] = None

891

519

client["last_checked_ok"] = None

892

520

client["last_checker_status"] = -2

893

521

894

522

return settings

895

896

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

523

524

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

897

525

self.name = name

898

526

if server_settings is None:

899

527

server_settings = {}

900

528

self.server_settings = server_settings

901

529

# adding all client settings

902

for setting, value in settings.items():

530

for setting, value in settings.iteritems():

903

531

setattr(self, setting, value)

904

532

905

533

if self.enabled:

906

534

if not hasattr(self, "last_enabled"):

907

535

self.last_enabled = datetime.datetime.utcnow()

911

539

else:

912

540

self.last_enabled = None

913

541

self.expires = None

914

542

915

543

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

544

# Uppercase and remove spaces from fingerprint for later

545

# comparison purposes with return value from the fingerprint()

546

# function

916

547

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

917

548

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

918

549

datetime.datetime.utcnow())

919

550

920

551

# attributes specific for this server instance

921

552

self.checker = None

922

553

self.checker_initiator_tag = None

925

556

self.current_checker_command = None

926

557

self.approved = None

927

558

self.approvals_pending = 0

928

self.changedstate = multiprocessing_manager.Condition(

929

multiprocessing_manager.Lock())

930

self.client_structure = [attr

931

for attr in self.__dict__.keys()

559

self.changedstate = (multiprocessing_manager

560

.Condition(multiprocessing_manager

561

.Lock()))

562

self.client_structure = [attr for attr in

563

self.__dict__.iterkeys()

932

564

if not attr.startswith("_")]

933

565

self.client_structure.append("client_structure")

934

935

for name, t in inspect.getmembers(

936

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

566

567

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

568

lambda obj:

569

isinstance(obj,

570

property)):

937

571

if not name.startswith("_"):

938

572

self.client_structure.append(name)

939

573

940

574

# Send notice to process children that client state has changed

941

575

def send_changedstate(self):

942

576

with self.changedstate:

943

577

self.changedstate.notify_all()

944

578

945

579

def enable(self):

946

580

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

947

581

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

952

586

self.last_enabled = datetime.datetime.utcnow()

953

587

self.init_checker()

954

588

self.send_changedstate()

955

589

956

590

def disable(self, quiet=True):

957

591

"""Disable this client."""

958

592

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

960

594

if not quiet:

961

595

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

962

596

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

963

GLib.source_remove(self.disable_initiator_tag)

597

gobject.source_remove(self.disable_initiator_tag)

964

598

self.disable_initiator_tag = None

965

599

self.expires = None

966

600

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

967

GLib.source_remove(self.checker_initiator_tag)

601

gobject.source_remove(self.checker_initiator_tag)

968

602

self.checker_initiator_tag = None

969

603

self.stop_checker()

970

604

self.enabled = False

971

605

if not quiet:

972

606

self.send_changedstate()

973

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

607

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

974

608

return False

975

609

976

610

def __del__(self):

977

611

self.disable()

978

612

979

613

def init_checker(self):

980

614

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

981

615

# and every interval from then on.

982

616

if self.checker_initiator_tag is not None:

983

GLib.source_remove(self.checker_initiator_tag)

984

self.checker_initiator_tag = GLib.timeout_add(

985

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

986

self.start_checker)

617

gobject.source_remove(self.checker_initiator_tag)

618

self.checker_initiator_tag = (gobject.timeout_add

619

(self.interval_milliseconds(),

620

self.start_checker))

987

621

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

988

622

if self.disable_initiator_tag is not None:

989

GLib.source_remove(self.disable_initiator_tag)

990

self.disable_initiator_tag = GLib.timeout_add(

991

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

623

gobject.source_remove(self.disable_initiator_tag)

624

self.disable_initiator_tag = (gobject.timeout_add

625

(self.timeout_milliseconds(),

626

self.disable))

992

627

# Also start a new checker *right now*.

993

628

self.start_checker()

994

995

def checker_callback(self, source, condition, connection,

996

command):

629

630

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

997

631

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

998

632

self.checker_callback_tag = None

999

633

self.checker = None

1000

# Read return code from connection (see call_pipe)

1001

returncode = connection.recv()

1002

connection.close()

1003

1004

if returncode >= 0:

1005

self.last_checker_status = returncode

1006

self.last_checker_signal = None

634

if os.WIFEXITED(condition):

635

self.last_checker_status = os.WEXITSTATUS(condition)

1007

636

if self.last_checker_status == 0:

1008

637

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

1009

638

vars(self))

1010

639

self.checked_ok()

1011

640

else:

1012

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

641

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

642

vars(self))

1013

643

else:

1014

644

self.last_checker_status = -1

1015

self.last_checker_signal = -returncode

1016

645

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

1017

646

vars(self))

1018

return False

1019

647

1020

648

def checked_ok(self):

1021

649

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

1022

650

self.last_checked_ok = datetime.datetime.utcnow()

1023

651

self.last_checker_status = 0

1024

self.last_checker_signal = None

1025

652

self.bump_timeout()

1026

653

1027

654

def bump_timeout(self, timeout=None):

1028

655

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

1029

656

if timeout is None:

1030

657

timeout = self.timeout

1031

658

if self.disable_initiator_tag is not None:

1032

GLib.source_remove(self.disable_initiator_tag)

659

gobject.source_remove(self.disable_initiator_tag)

1033

660

self.disable_initiator_tag = None

1034

661

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

1035

self.disable_initiator_tag = GLib.timeout_add(

1036

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

662

self.disable_initiator_tag = (gobject.timeout_add

663

(timedelta_to_milliseconds

664

(timeout), self.disable))

1037

665

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

1038

666

1039

667

def need_approval(self):

1040

668

self.last_approval_request = datetime.datetime.utcnow()

1041

669

1042

670

def start_checker(self):

1043

671

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

1044

672

1045

673

If a checker already exists, leave it running and do

1046

674

nothing."""

1047

675

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

1052

680

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

1053

681

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

1054

682

# should be.

1055

1056

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

1057

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

1058

self.checker.join()

1059

self.checker = None

683

684

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

685

try:

686

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

687

except (AttributeError, OSError) as error:

688

if (isinstance(error, OSError)

689

and error.errno != errno.ECHILD):

690

raise error

691

else:

692

if pid:

693

logger.warning("Checker was a zombie")

694

gobject.source_remove(self.checker_callback_tag)

695

self.checker_callback(pid, status,

696

self.current_checker_command)

1060

697

# Start a new checker if needed

1061

698

if self.checker is None:

1062

699

# Escape attributes for the shell

1063

escaped_attrs = {

1064

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

1065

for attr in self.runtime_expansions}

700

escaped_attrs = dict(

701

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

702

for attr in

703

self.runtime_expansions)

1066

704

try:

1067

705

command = self.checker_command % escaped_attrs

1068

706

except TypeError as error:

1069

707

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

1070

self.checker_command,

708

self.checker_command, exc_info=error)

709

return True # Try again later

710

self.current_checker_command = command

711

try:

712

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

713

command, self.name)

714

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

715

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

716

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

717

# always replaced by /dev/null.)

718

# The exception is when not debugging but nevertheless

719

# running in the foreground; use the previously

720

# created wnull.

721

popen_args = {}

722

if (not self.server_settings["debug"]

723

and self.server_settings["foreground"]):

724

popen_args.update({"stdout": wnull,

725

"stderr": wnull })

726

self.checker = subprocess.Popen(command,

727

close_fds=True,

728

shell=True, cwd="/",

729

**popen_args)

730

except OSError as error:

731

logger.error("Failed to start subprocess",

1071

732

exc_info=error)

1072

return True # Try again later

1073

self.current_checker_command = command

1074

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

1075

self.name)

1076

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

1077

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

1078

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

1079

# always replaced by /dev/null.)

1080

# The exception is when not debugging but nevertheless

1081

# running in the foreground; use the previously

1082

# created wnull.

1083

popen_args = {"close_fds": True,

1084

"shell": True,

1085

"cwd": "/"}

1086

if (not self.server_settings["debug"]

1087

and self.server_settings["foreground"]):

1088

popen_args.update({"stdout": wnull,

1089

"stderr": wnull})

1090

pipe = multiprocessing.Pipe(duplex=False)

1091

self.checker = multiprocessing.Process(

1092

target=call_pipe,

1093

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

1094

kwargs=popen_args)

1095

self.checker.start()

1096

self.checker_callback_tag = GLib.io_add_watch(

1097

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

1098

self.checker_callback, pipe[0], command)

1099

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

733

return True

734

self.checker_callback_tag = (gobject.child_watch_add

735

(self.checker.pid,

736

self.checker_callback,

737

data=command))

738

# The checker may have completed before the gobject

739

# watch was added. Check for this.

740

try:

741

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

742

except OSError as error:

743

if error.errno == errno.ECHILD:

744

# This should never happen

745

logger.error("Child process vanished",

746

exc_info=error)

747

return True

748

raise

749

if pid:

750

gobject.source_remove(self.checker_callback_tag)

751

self.checker_callback(pid, status, command)

752

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

1100

753

return True

1101

754

1102

755

def stop_checker(self):

1103

756

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

1104

757

if self.checker_callback_tag:

1105

GLib.source_remove(self.checker_callback_tag)

758

gobject.source_remove(self.checker_callback_tag)

1106

759

self.checker_callback_tag = None

1107

760

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

1108

761

return

1109

762

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

1110

self.checker.terminate()

763

try:

764

self.checker.terminate()

765

#time.sleep(0.5)

766

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

767

# self.checker.kill()

768

except OSError as error:

769

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

770

raise

1111

771

self.checker = None

1112

772

1113

773

1114

def dbus_service_property(dbus_interface,

1115

signature="v",

1116

access="readwrite",

1117

byte_arrays=False):

774

def dbus_service_property(dbus_interface, signature="v",

775

access="readwrite", byte_arrays=False):

1118

776

"""Decorators for marking methods of a DBusObjectWithProperties to

1119

777

become properties on the D-Bus.

1120

778

1121

779

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

1122

780

and with one argument by "Set".

1123

781

1124

782

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

1125

783

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

1126

784

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

1129

787

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

1130

788

if byte_arrays and signature != "ay":

1131

789

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

1132

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

1133

790

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

1134

791

def decorator(func):

1135

792

func._dbus_is_property = True

1136

793

func._dbus_interface = dbus_interface

1139

796

func._dbus_name = func.__name__

1140

797

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

1141

798

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

1142

func._dbus_get_args_options = {'byte_arrays': byte_arrays}

799

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

1143

800

return func

1144

1145

801

return decorator

1146

802

1147

803

1148

804

def dbus_interface_annotations(dbus_interface):

1149

805

"""Decorator for marking functions returning interface annotations

1150

806

1151

807

Usage:

1152

808

1153

809

@dbus_interface_annotations("org.example.Interface")

1154

810

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

1155

811

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

1156

812

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

1157

813

"false"}

1158

814

"""

1159

1160

815

def decorator(func):

1161

816

func._dbus_is_interface = True

1162

817

func._dbus_interface = dbus_interface

1163

818

func._dbus_name = dbus_interface

1164

819

return func

1165

1166

820

return decorator

1167

821

1168

822

1169

823

def dbus_annotations(annotations):

1170

824

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

1171

825

Usage:

1172

1173

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

1174

"org.freedesktop.DBus.Property."

1175

"EmitsChangedSignal": "false"})

826

1176

827

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

1177

828

access="r")

829

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

830

"org.freedesktop.DBus.Property."

831

"EmitsChangedSignal": "false"})

1178

832

def Property_dbus_property(self):

1179

833

return dbus.Boolean(False)

1180

1181

See also the DBusObjectWithAnnotations class.

1182

834

"""

1183

1184

835

def decorator(func):

1185

836

func._dbus_annotations = annotations

1186

837

return func

1187

1188

838

return decorator

1189

839

1190

840

1191

841

class DBusPropertyException(dbus.exceptions.DBusException):

1192

842

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

1193

843

"""

1194

pass

844

def __unicode__(self):

845

return unicode(str(self))

1195

846

1196

847

1197

848

class DBusPropertyAccessException(DBusPropertyException):

1206

857

pass

1207

858

1208

859

1209

class DBusObjectWithAnnotations(dbus.service.Object):

1210

"""A D-Bus object with annotations.

1211

1212

Classes inheriting from this can use the dbus_annotations

1213

decorator to add annotations to methods or signals.

860

class DBusObjectWithProperties(dbus.service.Object):

861

"""A D-Bus object with properties.

862

863

Classes inheriting from this can use the dbus_service_property

864

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

865

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

1214

866

"""

1215

867

1216

868

@staticmethod

1217

869

def _is_dbus_thing(thing):

1218

870

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

1219

871

1220

872

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

1221

873

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

1222

874

"""

1223

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

875

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

1224

876

False)

1225

877

1226

878

def _get_all_dbus_things(self, thing):

1227

879

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

1228

880

"""

1229

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

881

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

882

name),

1230

883

athing.__get__(self))

1231

884

for cls in self.__class__.__mro__

1232

885

for name, athing in

1233

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

1234

1235

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1236

out_signature="s",

1237

path_keyword='object_path',

1238

connection_keyword='connection')

1239

def Introspect(self, object_path, connection):

1240

"""Overloading of standard D-Bus method.

1241

1242

Inserts annotation tags on methods and signals.

1243

"""

1244

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

1245

connection)

1246

try:

1247

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

1248

1249

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

1250

# Add annotation tags

1251

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

1252

for tag in if_tag.getElementsByTagName(typ):

1253

annots = dict()

1254

for name, prop in (self.

1255

_get_all_dbus_things(typ)):

1256

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

1257

and prop._dbus_interface

1258

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

1259

annots.update(getattr(

1260

prop, "_dbus_annotations", {}))

1261

for name, value in annots.items():

1262

ann_tag = document.createElement(

1263

"annotation")

1264

ann_tag.setAttribute("name", name)

1265

ann_tag.setAttribute("value", value)

1266

tag.appendChild(ann_tag)

1267

# Add interface annotation tags

1268

for annotation, value in dict(

1269

itertools.chain.from_iterable(

1270

annotations().items()

1271

for name, annotations

1272

in self._get_all_dbus_things("interface")

1273

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

1274

)).items():

1275

ann_tag = document.createElement("annotation")

1276

ann_tag.setAttribute("name", annotation)

1277

ann_tag.setAttribute("value", value)

1278

if_tag.appendChild(ann_tag)

1279

# Fix argument name for the Introspect method itself

1280

if (if_tag.getAttribute("name")

1281

== dbus.INTROSPECTABLE_IFACE):

1282

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

1283

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

1284

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

1285

if (arg.getAttribute("direction")

1286

== "out"):

1287

arg.setAttribute("name",

1288

"xml_data")

1289

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

1290

document.unlink()

1291

except (AttributeError, xml.dom.DOMException,

1292

xml.parsers.expat.ExpatError) as error:

1293

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

1294

exc_info=error)

1295

return xmlstring

1296

1297

1298

class DBusObjectWithProperties(DBusObjectWithAnnotations):

1299

"""A D-Bus object with properties.

1300

1301

Classes inheriting from this can use the dbus_service_property

1302

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

1303

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

1304

"""

1305

886

inspect.getmembers(cls,

887

self._is_dbus_thing(thing)))

888

1306

889

def _get_dbus_property(self, interface_name, property_name):

1307

890

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

1308

891

property with the specified name and interface.

1309

892

"""

1310

for cls in self.__class__.__mro__:

1311

for name, value in inspect.getmembers(

1312

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

893

for cls in self.__class__.__mro__:

894

for name, value in (inspect.getmembers

895

(cls,

896

self._is_dbus_thing("property"))):

1313

897

if (value._dbus_name == property_name

1314

898

and value._dbus_interface == interface_name):

1315

899

return value.__get__(self)

1316

900

1317

901

# No such property

1318

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

1319

self.dbus_object_path, interface_name, property_name))

1320

1321

@classmethod

1322

def _get_all_interface_names(cls):

1323

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

1324

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

1325

"_dbus_interface", None)

1326

for x in (inspect.getmro(cls))

1327

for attr in dir(x))

1328

if name is not None)

1329

1330

@dbus.service.method(dbus.PROPERTIES_IFACE,

1331

in_signature="ss",

902

raise DBusPropertyNotFound(self.dbus_object_path + ":"

903

+ interface_name + "."

904

+ property_name)

905

906

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

1332

907

out_signature="v")

1333

908

def Get(self, interface_name, property_name):

1334

909

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

1340

915

if not hasattr(value, "variant_level"):

1341

916

return value

1342

917

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

1343

918

1344

919

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

1345

920

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

1346

921

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

1352

927

# The byte_arrays option is not supported yet on

1353

928

# signatures other than "ay".

1354

929

if prop._dbus_signature != "ay":

1355

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

1356

"'ay' signature {!r}"

1357

.format(prop._dbus_signature))

930

raise ValueError

1358

931

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

1359

932

for byte in value))

1360

933

prop(value)

1361

1362

@dbus.service.method(dbus.PROPERTIES_IFACE,

1363

in_signature="s",

934

935

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

1364

936

out_signature="a{sv}")

1365

937

def GetAll(self, interface_name):

1366

938

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

1367

939

standard.

1368

940

1369

941

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

1370

942

"""

1371

943

properties = {}

1381

953

if not hasattr(value, "variant_level"):

1382

954

properties[name] = value

1383

955

continue

1384

properties[name] = type(value)(

1385

value, variant_level=value.variant_level + 1)

956

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

957

value.variant_level+1)

1386

958

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

1387

1388

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

1389

def PropertiesChanged(self, interface_name, changed_properties,

1390

invalidated_properties):

1391

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

1392

standard.

1393

"""

1394

pass

1395

959

1396

960

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1397

961

out_signature="s",

1398

962

path_keyword='object_path',

1399

963

connection_keyword='connection')

1400

964

def Introspect(self, object_path, connection):

1401

965

"""Overloading of standard D-Bus method.

1402

966

1403

967

Inserts property tags and interface annotation tags.

1404

968

"""

1405

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1406

object_path,

1407

connection)

969

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

970

connection)

1408

971

try:

1409

972

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

1410

1411

973

def make_tag(document, name, prop):

1412

974

e = document.createElement("property")

1413

975

e.setAttribute("name", name)

1414

976

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

1415

977

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

1416

978

return e

1417

1418

979

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

1419

980

# Add property tags

1420

981

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

1423

984

if prop._dbus_interface

1424

985

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

1425

986

if_tag.appendChild(tag)

1426

# Add annotation tags for properties

1427

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

1428

annots = dict()

1429

for name, prop in self._get_all_dbus_things(

1430

"property"):

1431

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

1432

and prop._dbus_interface

1433

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

1434

annots.update(getattr(

1435

prop, "_dbus_annotations", {}))

1436

for name, value in annots.items():

1437

ann_tag = document.createElement(

1438

"annotation")

1439

ann_tag.setAttribute("name", name)

1440

ann_tag.setAttribute("value", value)

1441

tag.appendChild(ann_tag)

987

# Add annotation tags

988

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

989

for tag in if_tag.getElementsByTagName(typ):

990

annots = dict()

991

for name, prop in (self.

992

_get_all_dbus_things(typ)):

993

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

994

and prop._dbus_interface

995

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

996

annots.update(getattr

997

(prop,

998

"_dbus_annotations",

999

{}))

1000

for name, value in annots.iteritems():

1001

ann_tag = document.createElement(

1002

"annotation")

1003

ann_tag.setAttribute("name", name)

1004

ann_tag.setAttribute("value", value)

1005

tag.appendChild(ann_tag)

1006

# Add interface annotation tags

1007

for annotation, value in dict(

1008

itertools.chain.from_iterable(

1009

annotations().iteritems()

1010

for name, annotations in

1011

self._get_all_dbus_things("interface")

1012

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

1013

)).iteritems():

1014

ann_tag = document.createElement("annotation")

1015

ann_tag.setAttribute("name", annotation)

1016

ann_tag.setAttribute("value", value)

1017

if_tag.appendChild(ann_tag)

1442

1018

# Add the names to the return values for the

1443

1019

# "org.freedesktop.DBus.Properties" methods

1444

1020

if (if_tag.getAttribute("name")

1463

1039

return xmlstring

1464

1040

1465

1041

1466

try:

1467

dbus.OBJECT_MANAGER_IFACE

1468

except AttributeError:

1469

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

1470

1471

1472

class DBusObjectWithObjectManager(DBusObjectWithAnnotations):

1473

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

1474

1475

Classes inheriting from this exposes the standard

1476

GetManagedObjects call and the InterfacesAdded and

1477

InterfacesRemoved signals on the standard

1478

"org.freedesktop.DBus.ObjectManager" interface.

1479

1480

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

1481

manually.

1482

"""

1483

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

1484

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

1485

def GetManagedObjects(self):

1486

"""This function must be overridden"""

1487

raise NotImplementedError()

1488

1489

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,

1490

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

1491

def InterfacesAdded(self, object_path, interfaces_and_properties):

1492

pass

1493

1494

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

1495

def InterfacesRemoved(self, object_path, interfaces):

1496

pass

1497

1498

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1499

out_signature="s",

1500

path_keyword='object_path',

1501

connection_keyword='connection')

1502

def Introspect(self, object_path, connection):

1503

"""Overloading of standard D-Bus method.

1504

1505

Override return argument name of GetManagedObjects to be

1506

"objpath_interfaces_and_properties"

1507

"""

1508

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1509

object_path,

1510

connection)

1511

try:

1512

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

1513

1514

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

1515

# Fix argument name for the GetManagedObjects method

1516

if (if_tag.getAttribute("name")

1517

== dbus.OBJECT_MANAGER_IFACE):

1518

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

1519

if (cn.getAttribute("name")

1520

== "GetManagedObjects"):

1521

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

1522

if (arg.getAttribute("direction")

1523

== "out"):

1524

arg.setAttribute(

1525

"name",

1526

"objpath_interfaces"

1527

"_and_properties")

1528

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

1529

document.unlink()

1530

except (AttributeError, xml.dom.DOMException,

1531

xml.parsers.expat.ExpatError) as error:

1532

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

1533

exc_info=error)

1534

return xmlstring

1535

1536

1537

1042

def datetime_to_dbus(dt, variant_level=0):

1538

1043

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

1539

1044

if dt is None:

1540

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

1541

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

1045

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

1046

return dbus.String(dt.isoformat(),

1047

variant_level=variant_level)

1542

1048

1543

1049

1544

1050

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1546

1052

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

1547

1053

interface names according to the "alt_interface_names" mapping.

1548

1054

Usage:

1549

1055

1550

1056

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

1551

1057

"net.example.AlternateInterface"})

1552

1058

class SampleDBusObject(dbus.service.Object):

1553

1059

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

1554

1060

def SampleDBusMethod():

1555

1061

pass

1556

1062

1557

1063

The above "SampleDBusMethod" on "SampleDBusObject" will be

1558

1064

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

1559

1065

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

1560

1066

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

1561

1067

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

1562

1068

1563

1069

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

1564

1070

(from DBusObjectWithProperties) and interfaces (from the

1565

1071

dbus_interface_annotations decorator).

1566

1072

"""

1567

1568

1073

def wrapper(cls):

1569

1074

for orig_interface_name, alt_interface_name in (

1570

alt_interface_names.items()):

1075

alt_interface_names.iteritems()):

1571

1076

attr = {}

1572

1077

interface_names = set()

1573

1078

# Go though all attributes of the class

1575

1080

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

1576

1081

# with the wrong interface name

1577

1082

if (not hasattr(attribute, "_dbus_interface")

1578

or not attribute._dbus_interface.startswith(

1579

orig_interface_name)):

1083

or not attribute._dbus_interface

1084

.startswith(orig_interface_name)):

1580

1085

continue

1581

1086

# Create an alternate D-Bus interface name based on

1582

1087

# the current name

1583

alt_interface = attribute._dbus_interface.replace(

1584

orig_interface_name, alt_interface_name)

1088

alt_interface = (attribute._dbus_interface

1089

.replace(orig_interface_name,

1090

alt_interface_name))

1585

1091

interface_names.add(alt_interface)

1586

1092

# Is this a D-Bus signal?

1587

1093

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

1588

1094

# Extract the original non-method undecorated

1589

1095

# function by black magic

1590

if sys.version_info.major == 2:

1591

nonmethod_func = (dict(

1096

nonmethod_func = (dict(

1592

1097

zip(attribute.func_code.co_freevars,

1593

attribute.__closure__))

1594

["func"].cell_contents)

1595

else:

1596

nonmethod_func = (dict(

1597

zip(attribute.__code__.co_freevars,

1598

attribute.__closure__))

1599

["func"].cell_contents)

1098

attribute.__closure__))["func"]

1099

.cell_contents)

1600

1100

# Create a new, but exactly alike, function

1601

1101

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

1602

1102

# with the alternate D-Bus interface name

1603

new_function = copy_function(nonmethod_func)

1604

new_function = (dbus.service.signal(

1605

alt_interface,

1606

attribute._dbus_signature)(new_function))

1103

new_function = (dbus.service.signal

1104

(alt_interface,

1105

attribute._dbus_signature)

1106

(types.FunctionType(

1107

nonmethod_func.func_code,

1108

nonmethod_func.func_globals,

1109

nonmethod_func.func_name,

1110

nonmethod_func.func_defaults,

1111

nonmethod_func.func_closure)))

1607

1112

# Copy annotations, if any

1608

1113

try:

1609

new_function._dbus_annotations = dict(

1610

attribute._dbus_annotations)

1114

new_function._dbus_annotations = (

1115

dict(attribute._dbus_annotations))

1611

1116

except AttributeError:

1612

1117

pass

1613

1614

1118

# Define a creator of a function to call both the

1615

1119

# original and alternate functions, so both the

1616

1120

# original and alternate signals gets sent when

1619

1123

"""This function is a scope container to pass

1620

1124

func1 and func2 to the "call_both" function

1621

1125

outside of its arguments"""

1622

1623

@functools.wraps(func2)

1624

1126

def call_both(*args, **kwargs):

1625

1127

"""This function will emit two D-Bus

1626

1128

signals by calling func1 and func2"""

1627

1129

func1(*args, **kwargs)

1628

1130

func2(*args, **kwargs)

1629

# Make wrapper function look like a D-Bus

1630

# signal

1631

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

1632

if name.startswith("_dbus_"):

1633

setattr(call_both, name, attr)

1634

1635

1131

return call_both

1636

1132

# Create the "call_both" function and add it to

1637

1133

# the class

1642

1138

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

1643

1139

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

1644

1140

# to the class.

1645

attr[attrname] = (

1646

dbus.service.method(

1647

alt_interface,

1648

attribute._dbus_in_signature,

1649

attribute._dbus_out_signature)

1650

(copy_function(attribute)))

1141

attr[attrname] = (dbus.service.method

1142

(alt_interface,

1143

attribute._dbus_in_signature,

1144

attribute._dbus_out_signature)

1145

(types.FunctionType

1146

(attribute.func_code,

1147

attribute.func_globals,

1148

attribute.func_name,

1149

attribute.func_defaults,

1150

attribute.func_closure)))

1651

1151

# Copy annotations, if any

1652

1152

try:

1653

attr[attrname]._dbus_annotations = dict(

1654

attribute._dbus_annotations)

1153

attr[attrname]._dbus_annotations = (

1154

dict(attribute._dbus_annotations))

1655

1155

except AttributeError:

1656

1156

pass

1657

1157

# Is this a D-Bus property?

1660

1160

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

1661

1161

# property with the alternate D-Bus interface

1662

1162

# name. Add it to the class.

1663

attr[attrname] = (dbus_service_property(

1664

alt_interface, attribute._dbus_signature,

1665

attribute._dbus_access,

1666

attribute._dbus_get_args_options

1667

["byte_arrays"])

1668

(copy_function(attribute)))

1163

attr[attrname] = (dbus_service_property

1164

(alt_interface,

1165

attribute._dbus_signature,

1166

attribute._dbus_access,

1167

attribute

1168

._dbus_get_args_options

1169

["byte_arrays"])

1170

(types.FunctionType

1171

(attribute.func_code,

1172

attribute.func_globals,

1173

attribute.func_name,

1174

attribute.func_defaults,

1175

attribute.func_closure)))

1669

1176

# Copy annotations, if any

1670

1177

try:

1671

attr[attrname]._dbus_annotations = dict(

1672

attribute._dbus_annotations)

1178

attr[attrname]._dbus_annotations = (

1179

dict(attribute._dbus_annotations))

1673

1180

except AttributeError:

1674

1181

pass

1675

1182

# Is this a D-Bus interface?

1678

1185

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

1679

1186

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

1680

1187

# to the class.

1681

attr[attrname] = (

1682

dbus_interface_annotations(alt_interface)

1683

(copy_function(attribute)))

1188

attr[attrname] = (dbus_interface_annotations

1189

(alt_interface)

1190

(types.FunctionType

1191

(attribute.func_code,

1192

attribute.func_globals,

1193

attribute.func_name,

1194

attribute.func_defaults,

1195

attribute.func_closure)))

1684

1196

if deprecate:

1685

1197

# Deprecate all alternate interfaces

1686

iname = "_AlternateDBusNames_interface_annotation{}"

1198

iname="_AlternateDBusNames_interface_annotation{0}"

1687

1199

for interface_name in interface_names:

1688

1689

1200

@dbus_interface_annotations(interface_name)

1690

1201

def func(self):

1691

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

1692

"true"}

1202

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

1203

"true" }

1693

1204

# Find an unused name

1694

1205

for aname in (iname.format(i)

1695

1206

for i in itertools.count()):

1699

1210

if interface_names:

1700

1211

# Replace the class with a new subclass of it with

1701

1212

# methods, signals, etc. as created above.

1702

if sys.version_info.major == 2:

1703

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

1704

(cls, ), attr)

1705

else:

1706

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

1707

(cls, ), attr)

1213

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

1214

(cls,), attr)

1708

1215

return cls

1709

1710

1216

return wrapper

1711

1217

1712

1218

1713

1219

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

1714

"se.bsnet.fukt.Mandos"})

1220

"se.bsnet.fukt.Mandos"})

1715

1221

class ClientDBus(Client, DBusObjectWithProperties):

1716

1222

"""A Client class using D-Bus

1717

1223

1718

1224

Attributes:

1719

1225

dbus_object_path: dbus.ObjectPath

1720

1226

bus: dbus.SystemBus()

1721

1227

"""

1722

1228

1723

1229

runtime_expansions = (Client.runtime_expansions

1724

+ ("dbus_object_path", ))

1725

1726

_interface = "se.recompile.Mandos.Client"

1727

1230

+ ("dbus_object_path",))

1231

1728

1232

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

1729

1730

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

1233

1234

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

1731

1235

self.bus = bus

1732

1236

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

1733

1237

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

1734

1238

# the D-Bus

1735

client_object_name = str(self.name).translate(

1239

client_object_name = unicode(self.name).translate(

1736

1240

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

1737

1241

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

1738

self.dbus_object_path = dbus.ObjectPath(

1739

"/clients/" + client_object_name)

1242

self.dbus_object_path = (dbus.ObjectPath

1243

("/clients/" + client_object_name))

1740

1244

DBusObjectWithProperties.__init__(self, self.bus,

1741

1245

self.dbus_object_path)

1742

1743

def notifychangeproperty(transform_func, dbus_name,

1744

type_func=lambda x: x,

1745

variant_level=1,

1746

invalidate_only=False,

1747

_interface=_interface):

1246

1247

def notifychangeproperty(transform_func,

1248

dbus_name, type_func=lambda x: x,

1249

variant_level=1):

1748

1250

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

1749

1251

its changes to DBus.

1750

1252

1751

1253

transform_fun: Function that takes a value and a variant_level

1752

1254

and transforms it to a D-Bus type.

1753

1255

dbus_name: D-Bus name of the variable

1755

1257

to the D-Bus. Default: no transform

1756

1258

variant_level: D-Bus variant level. Default: 1

1757

1259

"""

1758

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

1759

1260

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

1760

1261

def setter(self, value):

1761

1262

if hasattr(self, "dbus_object_path"):

1762

1263

if (not hasattr(self, attrname) or

1763

1264

type_func(getattr(self, attrname, None))

1764

1265

!= type_func(value)):

1765

if invalidate_only:

1766

self.PropertiesChanged(

1767

_interface, dbus.Dictionary(),

1768

dbus.Array((dbus_name, )))

1769

else:

1770

dbus_value = transform_func(

1771

type_func(value),

1772

variant_level=variant_level)

1773

self.PropertyChanged(dbus.String(dbus_name),

1774

dbus_value)

1775

self.PropertiesChanged(

1776

_interface,

1777

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

1778

dbus_value}),

1779

dbus.Array())

1266

dbus_value = transform_func(type_func(value),

1267

variant_level

1268

=variant_level)

1269

self.PropertyChanged(dbus.String(dbus_name),

1270

dbus_value)

1780

1271

setattr(self, attrname, value)

1781

1272

1782

1273

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

1783

1274

1784

1275

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1785

1276

approvals_pending = notifychangeproperty(dbus.Boolean,

1786

1277

"ApprovalPending",

1787

type_func=bool)

1278

type_func = bool)

1788

1279

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

1789

1280

last_enabled = notifychangeproperty(datetime_to_dbus,

1790

1281

"LastEnabled")

1791

checker = notifychangeproperty(

1792

dbus.Boolean, "CheckerRunning",

1793

type_func=lambda checker: checker is not None)

1282

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

1283

type_func = lambda checker:

1284

checker is not None)

1794

1285

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1795

1286

"LastCheckedOK")

1796

1287

last_checker_status = notifychangeproperty(dbus.Int16,

1799

1290

datetime_to_dbus, "LastApprovalRequest")

1800

1291

approved_by_default = notifychangeproperty(dbus.Boolean,

1801

1292

"ApprovedByDefault")

1802

approval_delay = notifychangeproperty(

1803

dbus.UInt64, "ApprovalDelay",

1804

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

1293

approval_delay = notifychangeproperty(dbus.UInt64,

1294

"ApprovalDelay",

1295

type_func =

1296

timedelta_to_milliseconds)

1805

1297

approval_duration = notifychangeproperty(

1806

1298

dbus.UInt64, "ApprovalDuration",

1807

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

1299

type_func = timedelta_to_milliseconds)

1808

1300

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

1809

timeout = notifychangeproperty(

1810

dbus.UInt64, "Timeout",

1811

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

1301

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

1302

type_func =

1303

timedelta_to_milliseconds)

1812

1304

extended_timeout = notifychangeproperty(

1813

1305

dbus.UInt64, "ExtendedTimeout",

1814

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

1815

interval = notifychangeproperty(

1816

dbus.UInt64, "Interval",

1817

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

1306

type_func = timedelta_to_milliseconds)

1307

interval = notifychangeproperty(dbus.UInt64,

1308

"Interval",

1309

type_func =

1310

timedelta_to_milliseconds)

1818

1311

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

1819

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

1820

invalidate_only=True)

1821

1312

1822

1313

del notifychangeproperty

1823

1314

1824

1315

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

1825

1316

try:

1826

1317

self.remove_from_connection()

1829

1320

if hasattr(DBusObjectWithProperties, "__del__"):

1830

1321

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

1831

1322

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

1832

1833

def checker_callback(self, source, condition,

1834

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

1835

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

1836

connection, command, *args,

1837

**kwargs)

1838

exitstatus = self.last_checker_status

1839

if exitstatus >= 0:

1323

1324

def checker_callback(self, pid, condition, command,

1325

*args, **kwargs):

1326

self.checker_callback_tag = None

1327

self.checker = None

1328

if os.WIFEXITED(condition):

1329

exitstatus = os.WEXITSTATUS(condition)

1840

1330

# Emit D-Bus signal

1841

1331

self.CheckerCompleted(dbus.Int16(exitstatus),

1842

# This is specific to GNU libC

1843

dbus.Int64(exitstatus << 8),

1332

dbus.Int64(condition),

1844

1333

dbus.String(command))

1845

1334

else:

1846

1335

# Emit D-Bus signal

1847

1336

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

1848

dbus.Int64(

1849

# This is specific to GNU libC

1850

(exitstatus << 8)

1851

| self.last_checker_signal),

1337

dbus.Int64(condition),

1852

1338

dbus.String(command))

1853

return ret

1854

1339

1340

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

1341

*args, **kwargs)

1342

1855

1343

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

1856

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

1344

old_checker = self.checker

1345

if self.checker is not None:

1346

old_checker_pid = self.checker.pid

1347

else:

1348

old_checker_pid = None

1857

1349

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

1858

1350

# Only if new checker process was started

1859

1351

if (self.checker is not None

1861

1353

# Emit D-Bus signal

1862

1354

self.CheckerStarted(self.current_checker_command)

1863

1355

return r

1864

1356

1865

1357

def _reset_approved(self):

1866

1358

self.approved = None

1867

1359

return False

1868

1360

1869

1361

def approve(self, value=True):

1870

1362

self.approved = value

1871

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

1872

* 1000), self._reset_approved)

1363

gobject.timeout_add(timedelta_to_milliseconds

1364

(self.approval_duration),

1365

self._reset_approved)

1873

1366

self.send_changedstate()

1874

1875

# D-Bus methods, signals & properties

1876

1877

# Interfaces

1878

1879

# Signals

1880

1367

1368

## D-Bus methods, signals & properties

1369

_interface = "se.recompile.Mandos.Client"

1370

1371

## Interfaces

1372

1373

@dbus_interface_annotations(_interface)

1374

def _foo(self):

1375

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

1376

"false"}

1377

1378

## Signals

1379

1881

1380

# CheckerCompleted - signal

1882

1381

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

1883

1382

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

1884

1383

"D-Bus signal"

1885

1384

pass

1886

1385

1887

1386

# CheckerStarted - signal

1888

1387

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

1889

1388

def CheckerStarted(self, command):

1890

1389

"D-Bus signal"

1891

1390

pass

1892

1391

1893

1392

# PropertyChanged - signal

1894

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

1895

1393

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

1896

1394

def PropertyChanged(self, property, value):

1897

1395

"D-Bus signal"

1898

1396

pass

1899

1397

1900

1398

# GotSecret - signal

1901

1399

@dbus.service.signal(_interface)

1902

1400

def GotSecret(self):

1905

1403

server to mandos-client

1906

1404

"""

1907

1405

pass

1908

1406

1909

1407

# Rejected - signal

1910

1408

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

1911

1409

def Rejected(self, reason):

1912

1410

"D-Bus signal"

1913

1411

pass

1914

1412

1915

1413

# NeedApproval - signal

1916

1414

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

1917

1415

def NeedApproval(self, timeout, default):

1918

1416

"D-Bus signal"

1919

1417

return self.need_approval()

1920

1921

# Methods

1922

1418

1419

## Methods

1420

1923

1421

# Approve - method

1924

1422

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

1925

1423

def Approve(self, value):

1926

1424

self.approve(value)

1927

1425

1928

1426

# CheckedOK - method

1929

1427

@dbus.service.method(_interface)

1930

1428

def CheckedOK(self):

1931

1429

self.checked_ok()

1932

1430

1933

1431

# Enable - method

1934

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

1935

1432

@dbus.service.method(_interface)

1936

1433

def Enable(self):

1937

1434

"D-Bus method"

1938

1435

self.enable()

1939

1436

1940

1437

# StartChecker - method

1941

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

1942

1438

@dbus.service.method(_interface)

1943

1439

def StartChecker(self):

1944

1440

"D-Bus method"

1945

1441

self.start_checker()

1946

1442

1947

1443

# Disable - method

1948

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

1949

1444

@dbus.service.method(_interface)

1950

1445

def Disable(self):

1951

1446

"D-Bus method"

1952

1447

self.disable()

1953

1448

1954

1449

# StopChecker - method

1955

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

1956

1450

@dbus.service.method(_interface)

1957

1451

def StopChecker(self):

1958

1452

self.stop_checker()

1959

1960

# Properties

1961

1453

1454

## Properties

1455

1962

1456

# ApprovalPending - property

1963

1457

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

1964

1458

def ApprovalPending_dbus_property(self):

1965

1459

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

1966

1460

1967

1461

# ApprovedByDefault - property

1968

@dbus_service_property(_interface,

1969

signature="b",

1462

@dbus_service_property(_interface, signature="b",

1970

1463

access="readwrite")

1971

1464

def ApprovedByDefault_dbus_property(self, value=None):

1972

1465

if value is None: # get

1973

1466

return dbus.Boolean(self.approved_by_default)

1974

1467

self.approved_by_default = bool(value)

1975

1468

1976

1469

# ApprovalDelay - property

1977

@dbus_service_property(_interface,

1978

signature="t",

1470

@dbus_service_property(_interface, signature="t",

1979

1471

access="readwrite")

1980

1472

def ApprovalDelay_dbus_property(self, value=None):

1981

1473

if value is None: # get

1982

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

1983

* 1000)

1474

return dbus.UInt64(self.approval_delay_milliseconds())

1984

1475

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

1985

1476

1986

1477

# ApprovalDuration - property

1987

@dbus_service_property(_interface,

1988

signature="t",

1478

@dbus_service_property(_interface, signature="t",

1989

1479

access="readwrite")

1990

1480

def ApprovalDuration_dbus_property(self, value=None):

1991

1481

if value is None: # get

1992

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

1993

* 1000)

1482

return dbus.UInt64(timedelta_to_milliseconds(

1483

self.approval_duration))

1994

1484

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

1995

1485

1996

1486

# Name - property

1997

@dbus_annotations(

1998

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

1999

1487

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

2000

1488

def Name_dbus_property(self):

2001

1489

return dbus.String(self.name)

2002

1490

2003

1491

# Fingerprint - property

2004

@dbus_annotations(

2005

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

2006

1492

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

2007

1493

def Fingerprint_dbus_property(self):

2008

1494

return dbus.String(self.fingerprint)

2009

1495

2010

1496

# Host - property

2011

@dbus_service_property(_interface,

2012

signature="s",

1497

@dbus_service_property(_interface, signature="s",

2013

1498

access="readwrite")

2014

1499

def Host_dbus_property(self, value=None):

2015

1500

if value is None: # get

2016

1501

return dbus.String(self.host)

2017

self.host = str(value)

2018

1502

self.host = unicode(value)

1503

2019

1504

# Created - property

2020

@dbus_annotations(

2021

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

2022

1505

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

2023

1506

def Created_dbus_property(self):

2024

1507

return datetime_to_dbus(self.created)

2025

1508

2026

1509

# LastEnabled - property

2027

1510

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

2028

1511

def LastEnabled_dbus_property(self):

2029

1512

return datetime_to_dbus(self.last_enabled)

2030

1513

2031

1514

# Enabled - property

2032

@dbus_service_property(_interface,

2033

signature="b",

1515

@dbus_service_property(_interface, signature="b",

2034

1516

access="readwrite")

2035

1517

def Enabled_dbus_property(self, value=None):

2036

1518

if value is None: # get

2039

1521

self.enable()

2040

1522

else:

2041

1523

self.disable()

2042

1524

2043

1525

# LastCheckedOK - property

2044

@dbus_service_property(_interface,

2045

signature="s",

1526

@dbus_service_property(_interface, signature="s",

2046

1527

access="readwrite")

2047

1528

def LastCheckedOK_dbus_property(self, value=None):

2048

1529

if value is not None:

2049

1530

self.checked_ok()

2050

1531

return

2051

1532

return datetime_to_dbus(self.last_checked_ok)

2052

1533

2053

1534

# LastCheckerStatus - property

2054

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

1535

@dbus_service_property(_interface, signature="n",

1536

access="read")

2055

1537

def LastCheckerStatus_dbus_property(self):

2056

1538

return dbus.Int16(self.last_checker_status)

2057

1539

2058

1540

# Expires - property

2059

1541

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

2060

1542

def Expires_dbus_property(self):

2061

1543

return datetime_to_dbus(self.expires)

2062

1544

2063

1545

# LastApprovalRequest - property

2064

1546

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

2065

1547

def LastApprovalRequest_dbus_property(self):

2066

1548

return datetime_to_dbus(self.last_approval_request)

2067

1549

2068

1550

# Timeout - property

2069

@dbus_service_property(_interface,

2070

signature="t",

1551

@dbus_service_property(_interface, signature="t",

2071

1552

access="readwrite")

2072

1553

def Timeout_dbus_property(self, value=None):

2073

1554

if value is None: # get

2074

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

1555

return dbus.UInt64(self.timeout_milliseconds())

2075

1556

old_timeout = self.timeout

2076

1557

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

2077

1558

# Reschedule disabling

2085

1566

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

2086

1567

is None):

2087

1568

return

2088

GLib.source_remove(self.disable_initiator_tag)

2089

self.disable_initiator_tag = GLib.timeout_add(

2090

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

2091

self.disable)

2092

1569

gobject.source_remove(self.disable_initiator_tag)

1570

self.disable_initiator_tag = (

1571

gobject.timeout_add(

1572

timedelta_to_milliseconds(self.expires - now),

1573

self.disable))

1574

2093

1575

# ExtendedTimeout - property

2094

@dbus_service_property(_interface,

2095

signature="t",

1576

@dbus_service_property(_interface, signature="t",

2096

1577

access="readwrite")

2097

1578

def ExtendedTimeout_dbus_property(self, value=None):

2098

1579

if value is None: # get

2099

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

2100

* 1000)

1580

return dbus.UInt64(self.extended_timeout_milliseconds())

2101

1581

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

2102

1582

2103

1583

# Interval - property

2104

@dbus_service_property(_interface,

2105

signature="t",

1584

@dbus_service_property(_interface, signature="t",

2106

1585

access="readwrite")

2107

1586

def Interval_dbus_property(self, value=None):

2108

1587

if value is None: # get

2109

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

1588

return dbus.UInt64(self.interval_milliseconds())

2110

1589

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

2111

1590

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

2112

1591

return

2113

1592

if self.enabled:

2114

1593

# Reschedule checker run

2115

GLib.source_remove(self.checker_initiator_tag)

2116

self.checker_initiator_tag = GLib.timeout_add(

2117

value, self.start_checker)

2118

self.start_checker() # Start one now, too

2119

1594

gobject.source_remove(self.checker_initiator_tag)

1595

self.checker_initiator_tag = (gobject.timeout_add

1596

(value, self.start_checker))

1597

self.start_checker() # Start one now, too

1598

2120

1599

# Checker - property

2121

@dbus_service_property(_interface,

2122

signature="s",

1600

@dbus_service_property(_interface, signature="s",

2123

1601

access="readwrite")

2124

1602

def Checker_dbus_property(self, value=None):

2125

1603

if value is None: # get

2126

1604

return dbus.String(self.checker_command)

2127

self.checker_command = str(value)

2128

1605

self.checker_command = unicode(value)

1606

2129

1607

# CheckerRunning - property

2130

@dbus_service_property(_interface,

2131

signature="b",

1608

@dbus_service_property(_interface, signature="b",

2132

1609

access="readwrite")

2133

1610

def CheckerRunning_dbus_property(self, value=None):

2134

1611

if value is None: # get

2137

1614

self.start_checker()

2138

1615

else:

2139

1616

self.stop_checker()

2140

1617

2141

1618

# ObjectPath - property

2142

@dbus_annotations(

2143

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

2144

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

2145

1619

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

2146

1620

def ObjectPath_dbus_property(self):

2147

return self.dbus_object_path # is already a dbus.ObjectPath

2148

1621

return self.dbus_object_path # is already a dbus.ObjectPath

1622

2149

1623

# Secret = property

2150

@dbus_annotations(

2151

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

2152

"invalidates"})

2153

@dbus_service_property(_interface,

2154

signature="ay",

2155

access="write",

2156

byte_arrays=True)

1624

@dbus_service_property(_interface, signature="ay",

1625

access="write", byte_arrays=True)

2157

1626

def Secret_dbus_property(self, value):

2158

self.secret = bytes(value)

2159

1627

self.secret = str(value)

1628

2160

1629

del _interface

2161

1630

2162

1631

2165

1634

self._pipe = child_pipe

2166

1635

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

2167

1636

if not self._pipe.recv():

2168

raise KeyError(fpr)

2169

1637

raise KeyError()

1638

2170

1639

def __getattribute__(self, name):

2171

1640

if name == '_pipe':

2172

1641

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

2175

1644

if data[0] == 'data':

2176

1645

return data[1]

2177

1646

if data[0] == 'function':

2178

2179

1647

def func(*args, **kwargs):

2180

1648

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

2181

1649

return self._pipe.recv()[1]

2182

2183

1650

return func

2184

1651

2185

1652

def __setattr__(self, name, value):

2186

1653

if name == '_pipe':

2187

1654

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

2190

1657

2191

1658

class ClientHandler(socketserver.BaseRequestHandler, object):

2192

1659

"""A class to handle client connections.

2193

1660

2194

1661

Instantiated once for each connection to handle it.

2195

1662

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

2196

1663

2197

1664

def handle(self):

2198

1665

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

2199

1666

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

2200

str(self.client_address))

1667

unicode(self.client_address))

2201

1668

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

2202

1669

self.server.child_pipe.fileno())

2203

2204

session = gnutls.ClientSession(self.request)

2205

2206

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

2207

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

2208

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

2209

# "+DHE-DSS"))

1670

1671

session = (gnutls.connection

1672

.ClientSession(self.request,

1673

gnutls.connection

1674

.X509Credentials()))

1675

1676

# Note: gnutls.connection.X509Credentials is really a

1677

# generic GnuTLS certificate credentials object so long as

1678

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

1679

# here despite using OpenPGP certificates.

1680

1681

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

1682

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

1683

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

1684

# "+DHE-DSS"))

2210

1685

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

2211

1686

priority = self.server.gnutls_priority

2212

1687

if priority is None:

2213

1688

priority = "NORMAL"

2214

gnutls.priority_set_direct(session._c_object,

2215

priority.encode("utf-8"),

2216

None)

2217

1689

(gnutls.library.functions

1690

.gnutls_priority_set_direct(session._c_object,

1691

priority, None))

1692

2218

1693

# Start communication using the Mandos protocol

2219

1694

# Get protocol number

2220

1695

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

2221

1696

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

2222

1697

try:

2223

1698

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

2224

raise RuntimeError(line)

1699

raise RuntimeError

2225

1700

except (ValueError, IndexError, RuntimeError) as error:

2226

1701

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

2227

1702

return

2228

1703

2229

1704

# Start GnuTLS connection

2230

1705

try:

2231

1706

session.handshake()

2232

except gnutls.Error as error:

1707

except gnutls.errors.GNUTLSError as error:

2233

1708

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

2234

1709

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

2235

1710

# established. Just abandon the request.

2236

1711

return

2237

1712

logger.debug("Handshake succeeded")

2238

1713

2239

1714

approval_required = False

2240

1715

try:

2241

1716

try:

2242

fpr = self.fingerprint(

2243

self.peer_certificate(session))

2244

except (TypeError, gnutls.Error) as error:

1717

fpr = self.fingerprint(self.peer_certificate

1718

(session))

1719

except (TypeError,

1720

gnutls.errors.GNUTLSError) as error:

2245

1721

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

2246

1722

return

2247

1723

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

2248

1724

2249

1725

try:

2250

1726

client = ProxyClient(child_pipe, fpr,

2251

1727

self.client_address)

2252

1728

except KeyError:

2253

1729

return

2254

1730

2255

1731

if client.approval_delay:

2256

1732

delay = client.approval_delay

2257

1733

client.approvals_pending += 1

2258

1734

approval_required = True

2259

1735

2260

1736

while True:

2261

1737

if not client.enabled:

2262

1738

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

2263

client.name)

1739

client.name)

2264

1740

if self.server.use_dbus:

2265

1741

# Emit D-Bus signal

2266

1742

client.Rejected("Disabled")

2267

1743

return

2268

1744

2269

1745

if client.approved or not client.approval_delay:

2270

# We are approved or approval is disabled

1746

#We are approved or approval is disabled

2271

1747

break

2272

1748

elif client.approved is None:

2273

1749

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

2275

1751

if self.server.use_dbus:

2276

1752

# Emit D-Bus signal

2277

1753

client.NeedApproval(

2278

client.approval_delay.total_seconds()

2279

* 1000, client.approved_by_default)

1754

client.approval_delay_milliseconds(),

1755

client.approved_by_default)

2280

1756

else:

2281

1757

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

2282

1758

client.name)

2284

1760

# Emit D-Bus signal

2285

1761

client.Rejected("Denied")

2286

1762

return

2287

2288

# wait until timeout or approved

1763

1764

#wait until timeout or approved

2289

1765

time = datetime.datetime.now()

2290

1766

client.changedstate.acquire()

2291

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

1767

client.changedstate.wait(

1768

float(timedelta_to_milliseconds(delay)

1769

/ 1000))

2292

1770

client.changedstate.release()

2293

1771

time2 = datetime.datetime.now()

2294

1772

if (time2 - time) >= delay:

2304

1782

break

2305

1783

else:

2306

1784

delay -= time2 - time

2307

2308

try:

2309

session.send(client.secret)

2310

except gnutls.Error as error:

2311

logger.warning("gnutls send failed",

2312

exc_info=error)

2313

return

2314

1785

1786

sent_size = 0

1787

while sent_size < len(client.secret):

1788

try:

1789

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

1790

except gnutls.errors.GNUTLSError as error:

1791

logger.warning("gnutls send failed",

1792

exc_info=error)

1793

return

1794

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

1795

sent, len(client.secret)

1796

- (sent_size + sent))

1797

sent_size += sent

1798

2315

1799

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

2316

1800

# bump the timeout using extended_timeout

2317

1801

client.bump_timeout(client.extended_timeout)

2318

1802

if self.server.use_dbus:

2319

1803

# Emit D-Bus signal

2320

1804

client.GotSecret()

2321

1805

2322

1806

finally:

2323

1807

if approval_required:

2324

1808

client.approvals_pending -= 1

2325

1809

try:

2326

1810

session.bye()

2327

except gnutls.Error as error:

1811

except gnutls.errors.GNUTLSError as error:

2328

1812

logger.warning("GnuTLS bye failed",

2329

1813

exc_info=error)

2330

1814

2331

1815

@staticmethod

2332

1816

def peer_certificate(session):

2333

1817

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

2334

1818

# If not an OpenPGP certificate...

2335

if (gnutls.certificate_type_get(session._c_object)

2336

!= gnutls.CRT_OPENPGP):

2337

# ...return invalid data

2338

return b""

1819

if (gnutls.library.functions

1820

.gnutls_certificate_type_get(session._c_object)

1821

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1822

# ...do the normal thing

1823

return session.peer_certificate

2339

1824

list_size = ctypes.c_uint(1)

2340

cert_list = (gnutls.certificate_get_peers

1825

cert_list = (gnutls.library.functions

1826

.gnutls_certificate_get_peers

2341

1827

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

2342

1828

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

2343

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

1829

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

1830

" certificate")

2344

1831

if list_size.value == 0:

2345

1832

return None

2346

1833

cert = cert_list[0]

2347

1834

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

2348

1835

2349

1836

@staticmethod

2350

1837

def fingerprint(openpgp):

2351

1838

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

2352

1839

# New GnuTLS "datum" with the OpenPGP public key

2353

datum = gnutls.datum_t(

2354

ctypes.cast(ctypes.c_char_p(openpgp),

2355

ctypes.POINTER(ctypes.c_ubyte)),

2356

ctypes.c_uint(len(openpgp)))

1840

datum = (gnutls.library.types

1841

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

1842

ctypes.POINTER

1843

(ctypes.c_ubyte)),

1844

ctypes.c_uint(len(openpgp))))

2357

1845

# New empty GnuTLS certificate

2358

crt = gnutls.openpgp_crt_t()

2359

gnutls.openpgp_crt_init(ctypes.byref(crt))

1846

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1847

(gnutls.library.functions

1848

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

2360

1849

# Import the OpenPGP public key into the certificate

2361

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

2362

gnutls.OPENPGP_FMT_RAW)

1850

(gnutls.library.functions

1851

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

1852

gnutls.library.constants

1853

.GNUTLS_OPENPGP_FMT_RAW))

2363

1854

# Verify the self signature in the key

2364

1855

crtverify = ctypes.c_uint()

2365

gnutls.openpgp_crt_verify_self(crt, 0,

2366

ctypes.byref(crtverify))

1856

(gnutls.library.functions

1857

.gnutls_openpgp_crt_verify_self(crt, 0,

1858

ctypes.byref(crtverify)))

2367

1859

if crtverify.value != 0:

2368

gnutls.openpgp_crt_deinit(crt)

2369

raise gnutls.CertificateSecurityError("Verify failed")

1860

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1861

raise (gnutls.errors.CertificateSecurityError

1862

("Verify failed"))

2370

1863

# New buffer for the fingerprint

2371

1864

buf = ctypes.create_string_buffer(20)

2372

1865

buf_len = ctypes.c_size_t()

2373

1866

# Get the fingerprint from the certificate into the buffer

2374

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

2375

ctypes.byref(buf_len))

1867

(gnutls.library.functions

1868

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

1869

ctypes.byref(buf_len)))

2376

1870

# Deinit the certificate

2377

gnutls.openpgp_crt_deinit(crt)

1871

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

2378

1872

# Convert the buffer to a Python bytestring

2379

1873

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

2380

1874

# Convert the bytestring to hexadecimal notation

2384

1878

2385

1879

class MultiprocessingMixIn(object):

2386

1880

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

2387

2388

1881

def sub_process_main(self, request, address):

2389

1882

try:

2390

1883

self.finish_request(request, address)

2391

1884

except Exception:

2392

1885

self.handle_error(request, address)

2393

1886

self.close_request(request)

2394

1887

2395

1888

def process_request(self, request, address):

2396

1889

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

2397

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

2398

args=(request, address))

1890

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

1891

args = (request, address))

2399

1892

proc.start()

2400

1893

return proc

2401

1894

2402

1895

2403

1896

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

2404

1897

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

2405

2406

1898

def process_request(self, request, client_address):

2407

1899

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

2408

1900

2409

1901

This function creates a new pipe in self.pipe

2410

1902

"""

2411

1903

parent_pipe, self.child_pipe = multiprocessing.Pipe()

2412

1904

2413

1905

proc = MultiprocessingMixIn.process_request(self, request,

2414

1906

client_address)

2415

1907

self.child_pipe.close()

2416

1908

self.add_pipe(parent_pipe, proc)

2417

1909

2418

1910

def add_pipe(self, parent_pipe, proc):

2419

1911

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

2420

raise NotImplementedError()

1912

raise NotImplementedError

2421

1913

2422

1914

2423

1915

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

2424

1916

socketserver.TCPServer, object):

2425

1917

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

2426

1918

2427

1919

Attributes:

2428

1920

enabled: Boolean; whether this server is activated yet

2429

1921

interface: None or a network interface name (string)

2430

1922

use_ipv6: Boolean; to use IPv6 or not

2431

1923

"""

2432

2433

1924

def __init__(self, server_address, RequestHandlerClass,

2434

interface=None,

2435

use_ipv6=True,

2436

socketfd=None):

1925

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

2437

1926

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

2438

1927

creating a new one with socket.socket().

2439

1928

"""

2445

1934

self.socketfd = socketfd

2446

1935

# Save the original socket.socket() function

2447

1936

self.socket_socket = socket.socket

2448

2449

1937

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

2450

#

1938

#

2451

1939

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

2452

1940

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

2453

1941

# patching socket.socket.)

2454

#

1942

#

2455

1943

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

2456

1944

@functools.wraps(socket.socket)

2457

1945

def socket_wrapper(*args, **kwargs):

2469

1957

# socket_wrapper(), if socketfd was set.

2470

1958

socketserver.TCPServer.__init__(self, server_address,

2471

1959

RequestHandlerClass)

2472

1960

2473

1961

def server_bind(self):

2474

1962

"""This overrides the normal server_bind() function

2475

1963

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

2476

1964

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

2477

global SO_BINDTODEVICE

2478

1965

if self.interface is not None:

2479

1966

if SO_BINDTODEVICE is None:

2480

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

2481

# common enough.

2482

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

2483

SO_BINDTODEVICE = 25

2484

try:

2485

self.socket.setsockopt(

2486

socket.SOL_SOCKET, SO_BINDTODEVICE,

2487

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

2488

except socket.error as error:

2489

if error.errno == errno.EPERM:

2490

logger.error("No permission to bind to"

2491

" interface %s", self.interface)

2492

elif error.errno == errno.ENOPROTOOPT:

2493

logger.error("SO_BINDTODEVICE not available;"

2494

" cannot bind to interface %s",

2495

self.interface)

2496

elif error.errno == errno.ENODEV:

2497

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

2498

" cannot bind", self.interface)

2499

else:

2500

raise

1967

logger.error("SO_BINDTODEVICE does not exist;"

1968

" cannot bind to interface %s",

1969

self.interface)

1970

else:

1971

try:

1972

self.socket.setsockopt(socket.SOL_SOCKET,

1973

SO_BINDTODEVICE,

1974

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

1975

except socket.error as error:

1976

if error.errno == errno.EPERM:

1977

logger.error("No permission to bind to"

1978

" interface %s", self.interface)

1979

elif error.errno == errno.ENOPROTOOPT:

1980

logger.error("SO_BINDTODEVICE not available;"

1981

" cannot bind to interface %s",

1982

self.interface)

1983

elif error.errno == errno.ENODEV:

1984

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

1985

" cannot bind", self.interface)

1986

else:

1987

raise

2501

1988

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

2502

1989

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

2503

1990

if not self.server_address[0]:

2504

1991

if self.address_family == socket.AF_INET6:

2505

any_address = "::" # in6addr_any

1992

any_address = "::" # in6addr_any

2506

1993

else:

2507

any_address = "0.0.0.0" # INADDR_ANY

1994

any_address = "0.0.0.0" # INADDR_ANY

2508

1995

self.server_address = (any_address,

2509

1996

self.server_address[1])

2510

1997

elif not self.server_address[1]:

2511

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

1998

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

1999

0)

2512

2000

# if self.interface:

2513

2001

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

2514

2002

# 0, # port

2520

2008

2521

2009

class MandosServer(IPv6_TCPServer):

2522

2010

"""Mandos server.

2523

2011

2524

2012

Attributes:

2525

2013

clients: set of Client objects

2526

2014

gnutls_priority GnuTLS priority string

2527

2015

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

2528

2529

Assumes a GLib.MainLoop event loop.

2016

2017

Assumes a gobject.MainLoop event loop.

2530

2018

"""

2531

2532

2019

def __init__(self, server_address, RequestHandlerClass,

2533

interface=None,

2534

use_ipv6=True,

2535

clients=None,

2536

gnutls_priority=None,

2537

use_dbus=True,

2538

socketfd=None):

2020

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

2021

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

2539

2022

self.enabled = False

2540

2023

self.clients = clients

2541

2024

if self.clients is None:

2544

2027

self.gnutls_priority = gnutls_priority

2545

2028

IPv6_TCPServer.__init__(self, server_address,

2546

2029

RequestHandlerClass,

2547

interface=interface,

2548

use_ipv6=use_ipv6,

2549

socketfd=socketfd)

2550

2030

interface = interface,

2031

use_ipv6 = use_ipv6,

2032

socketfd = socketfd)

2551

2033

def server_activate(self):

2552

2034

if self.enabled:

2553

2035

return socketserver.TCPServer.server_activate(self)

2554

2036

2555

2037

def enable(self):

2556

2038

self.enabled = True

2557

2039

2558

2040

def add_pipe(self, parent_pipe, proc):

2559

2041

# Call "handle_ipc" for both data and EOF events

2560

GLib.io_add_watch(

2561

parent_pipe.fileno(),

2562

GLib.IO_IN | GLib.IO_HUP,

2563

functools.partial(self.handle_ipc,

2564

parent_pipe=parent_pipe,

2565

proc=proc))

2566

2567

def handle_ipc(self, source, condition,

2568

parent_pipe=None,

2569

proc=None,

2570

client_object=None):

2042

gobject.io_add_watch(parent_pipe.fileno(),

2043

gobject.IO_IN | gobject.IO_HUP,

2044

functools.partial(self.handle_ipc,

2045

parent_pipe =

2046

parent_pipe,

2047

proc = proc))

2048

2049

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

2050

proc = None, client_object=None):

2571

2051

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

2572

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

2052

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

2573

2053

# Wait for other process to exit

2574

2054

proc.join()

2575

2055

return False

2576

2056

2577

2057

# Read a request from the child

2578

2058

request = parent_pipe.recv()

2579

2059

command = request[0]

2580

2060

2581

2061

if command == 'init':

2582

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

2062

fpr = request[1]

2583

2063

address = request[2]

2584

2585

for c in self.clients.values():

2064

2065

for c in self.clients.itervalues():

2586

2066

if c.fingerprint == fpr:

2587

2067

client = c

2588

2068

break

2595

2075

address[0])

2596

2076

parent_pipe.send(False)

2597

2077

return False

2598

2599

GLib.io_add_watch(

2600

parent_pipe.fileno(),

2601

GLib.IO_IN | GLib.IO_HUP,

2602

functools.partial(self.handle_ipc,

2603

parent_pipe=parent_pipe,

2604

proc=proc,

2605

client_object=client))

2078

2079

gobject.io_add_watch(parent_pipe.fileno(),

2080

gobject.IO_IN | gobject.IO_HUP,

2081

functools.partial(self.handle_ipc,

2082

parent_pipe =

2083

parent_pipe,

2084

proc = proc,

2085

client_object =

2086

client))

2606

2087

parent_pipe.send(True)

2607

2088

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

2608

2089

# same fileno

2611

2092

funcname = request[1]

2612

2093

args = request[2]

2613

2094

kwargs = request[3]

2614

2095

2615

2096

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

2616

2097

funcname)(*args,

2617

**kwargs)))

2618

2098

**kwargs)))

2099

2619

2100

if command == 'getattr':

2620

2101

attrname = request[1]

2621

if isinstance(client_object.__getattribute__(attrname),

2622

collections.Callable):

2623

parent_pipe.send(('function', ))

2102

if callable(client_object.__getattribute__(attrname)):

2103

parent_pipe.send(('function',))

2624

2104

else:

2625

parent_pipe.send((

2626

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

2627

2105

parent_pipe.send(('data', client_object

2106

.__getattribute__(attrname)))

2107

2628

2108

if command == 'setattr':

2629

2109

attrname = request[1]

2630

2110

value = request[2]

2631

2111

setattr(client_object, attrname, value)

2632

2112

2633

2113

return True

2634

2114

2635

2115

2636

2116

def rfc3339_duration_to_delta(duration):

2637

2117

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

2638

2118

2639

2119

>>> rfc3339_duration_to_delta("P7D")

2640

2120

datetime.timedelta(7)

2641

2121

>>> rfc3339_duration_to_delta("PT60S")

2651

2131

>>> rfc3339_duration_to_delta("P1DT3M20S")

2652

2132

datetime.timedelta(1, 200)

2653

2133

"""

2654

2134

2655

2135

# Parsing an RFC 3339 duration with regular expressions is not

2656

2136

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

2657

2137

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

2658

2138

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

2659

2139

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

2660

2140

# avoid excessive use of external libraries.

2661

2141

2662

2142

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

2663

Token = collections.namedtuple("Token", (

2664

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

2665

# a "group" containing digits

2666

"value", # datetime.timedelta or None

2667

"followers")) # Tokens valid after this token

2143

Token = collections.namedtuple("Token",

2144

("regexp", # To match token; if

2145

# "value" is not None,

2146

# must have a "group"

2147

# containing digits

2148

"value", # datetime.timedelta or

2149

# None

2150

"followers")) # Tokens valid after

2151

# this token

2668

2152

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

2669

2153

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

2670

2154

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

2671

2155

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

2672

2156

datetime.timedelta(seconds=1),

2673

frozenset((token_end, )))

2157

frozenset((token_end,)))

2674

2158

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

2675

2159

datetime.timedelta(minutes=1),

2676

2160

frozenset((token_second, token_end)))

2692

2176

frozenset((token_month, token_end)))

2693

2177

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

2694

2178

datetime.timedelta(weeks=1),

2695

frozenset((token_end, )))

2179

frozenset((token_end,)))

2696

2180

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

2697

2181

frozenset((token_year, token_month,

2698

2182

token_day, token_time,

2699

token_week)))

2700

# Define starting values:

2701

# Value so far

2702

value = datetime.timedelta()

2183

token_week))),

2184

# Define starting values

2185

value = datetime.timedelta() # Value so far

2703

2186

found_token = None

2704

# Following valid tokens

2705

followers = frozenset((token_duration, ))

2706

# String left to parse

2707

s = duration

2187

followers = frozenset(token_duration,) # Following valid tokens

2188

s = duration # String left to parse

2708

2189

# Loop until end token is found

2709

2190

while found_token is not token_end:

2710

2191

# Search for any currently valid tokens

2726

2207

break

2727

2208

else:

2728

2209

# No currently valid tokens were found

2729

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

2730

.format(duration))

2210

raise ValueError("Invalid RFC 3339 duration")

2731

2211

# End token found

2732

2212

return value

2733

2213

2734

2214

2735

2215

def string_to_delta(interval):

2736

2216

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

2737

2217

2738

2218

>>> string_to_delta('7d')

2739

2219

datetime.timedelta(7)

2740

2220

>>> string_to_delta('60s')

2748

2228

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

2749

2229

datetime.timedelta(0, 330)

2750

2230

"""

2751

2231

2752

2232

try:

2753

2233

return rfc3339_duration_to_delta(interval)

2754

2234

except ValueError:

2755

2235

pass

2756

2236

2757

2237

timevalue = datetime.timedelta(0)

2758

2238

for s in interval.split():

2759

2239

try:

2760

suffix = s[-1]

2240

suffix = unicode(s[-1])

2761

2241

value = int(s[:-1])

2762

2242

if suffix == "d":

2763

2243

delta = datetime.timedelta(value)

2770

2250

elif suffix == "w":

2771

2251

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

2772

2252

else:

2773

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

2774

except IndexError as e:

2253

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

2254

.format(suffix))

2255

except (ValueError, IndexError) as e:

2775

2256

raise ValueError(*(e.args))

2776

2257

timevalue += delta

2777

2258

return timevalue

2778

2259

2779

2260

2780

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

2261

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

2781

2262

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

2782

2263

2783

2264

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

2784

2265

if os.fork():

2785

2266

sys.exit()

2793

2274

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

2794

2275

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

2795

2276

raise OSError(errno.ENODEV,

2796

"{} not a character device"

2277

"{0} not a character device"

2797

2278

.format(os.devnull))

2798

2279

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

2799

2280

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

2803

2284

2804

2285

2805

2286

def main():

2806

2287

2807

2288

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

2808

2289

# Parsing of options, both command line and config file

2809

2290

2810

2291

parser = argparse.ArgumentParser()

2811

2292

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

2812

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

2293

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

2813

2294

help="show version number and exit")

2814

2295

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

2815

2296

help="Bind to interface IF")

2848

2329

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

2849

2330

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

2850

2331

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

2851

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

2852

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

2853

default=None)

2854

2332

2855

2333

options = parser.parse_args()

2856

2334

2857

2335

if options.check:

2858

2336

import doctest

2859

fail_count, test_count = doctest.testmod()

2860

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

2861

2337

doctest.testmod()

2338

sys.exit()

2339

2862

2340

# Default values for config file for server-global settings

2863

server_defaults = {"interface": "",

2864

"address": "",

2865

"port": "",

2866

"debug": "False",

2867

"priority":

2868

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

2869

":+SIGN-DSA-SHA256",

2870

"servicename": "Mandos",

2871

"use_dbus": "True",

2872

"use_ipv6": "True",

2873

"debuglevel": "",

2874

"restore": "True",

2875

"socket": "",

2876

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

2877

"foreground": "False",

2878

"zeroconf": "True",

2879

}

2880

2341

server_defaults = { "interface": "",

2342

"address": "",

2343

"port": "",

2344

"debug": "False",

2345

"priority":

2346

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

2347

"servicename": "Mandos",

2348

"use_dbus": "True",

2349

"use_ipv6": "True",

2350

"debuglevel": "",

2351

"restore": "True",

2352

"socket": "",

2353

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

2354

"foreground": "False",

2355

}

2356

2881

2357

# Parse config file for server-global settings

2882

2358

server_config = configparser.SafeConfigParser(server_defaults)

2883

2359

del server_defaults

2884

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

2360

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

2361

"mandos.conf"))

2885

2362

# Convert the SafeConfigParser object to a dict

2886

2363

server_settings = server_config.defaults()

2887

2364

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

2888

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

2889

"foreground", "zeroconf"):

2365

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

2890

2366

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

2891

2367

option)

2892

2368

if server_settings["port"]:

2902

2378

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

2903

2379

["socket"])

2904

2380

del server_config

2905

2381

2906

2382

# Override the settings from the config file with command line

2907

2383

# options, if set.

2908

2384

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

2909

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

2910

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

2911

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

2385

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

2386

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

2387

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

2912

2388

value = getattr(options, option)

2913

2389

if value is not None:

2914

2390

server_settings[option] = value

2915

2391

del options

2916

2392

# Force all strings to be unicode

2917

2393

for option in server_settings.keys():

2918

if isinstance(server_settings[option], bytes):

2919

server_settings[option] = (server_settings[option]

2920

.decode("utf-8"))

2394

if type(server_settings[option]) is str:

2395

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

2921

2396

# Force all boolean options to be boolean

2922

2397

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

2923

"foreground", "zeroconf"):

2398

"foreground"):

2924

2399

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

2925

2400

# Debug implies foreground

2926

2401

if server_settings["debug"]:

2927

2402

server_settings["foreground"] = True

2928

2403

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

2929

2404

2930

2405

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

2931

2932

if (not server_settings["zeroconf"]

2933

and not (server_settings["port"]

2934

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

2935

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

2936

2406

2937

2407

# For convenience

2938

2408

debug = server_settings["debug"]

2939

2409

debuglevel = server_settings["debuglevel"]

2942

2412

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

2943

2413

stored_state_file)

2944

2414

foreground = server_settings["foreground"]

2945

zeroconf = server_settings["zeroconf"]

2946

2415

2947

2416

if debug:

2948

2417

initlogger(debug, logging.DEBUG)

2949

2418

else:

2952

2421

else:

2953

2422

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

2954

2423

initlogger(debug, level)

2955

2424

2956

2425

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

2957

syslogger.setFormatter(

2958

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

2959

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

2960

server_settings["servicename"])))

2961

2426

syslogger.setFormatter(logging.Formatter

2427

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

2428

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

2429

.format(server_settings

2430

["servicename"])))

2431

2962

2432

# Parse config file with clients

2963

2433

client_config = configparser.SafeConfigParser(Client

2964

2434

.client_defaults)

2965

2435

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

2966

2436

"clients.conf"))

2967

2437

2968

2438

global mandos_dbus_service

2969

2439

mandos_dbus_service = None

2970

2971

socketfd = None

2972

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

2973

socketfd = server_settings["socket"]

2974

tcp_server = MandosServer(

2975

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

2976

ClientHandler,

2977

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

2978

use_ipv6=use_ipv6,

2979

gnutls_priority=server_settings["priority"],

2980

use_dbus=use_dbus,

2981

socketfd=socketfd)

2440

2441

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

2442

server_settings["port"]),

2443

ClientHandler,

2444

interface=(server_settings["interface"]

2445

or None),

2446

use_ipv6=use_ipv6,

2447

gnutls_priority=

2448

server_settings["priority"],

2449

use_dbus=use_dbus,

2450

socketfd=(server_settings["socket"]

2451

or None))

2982

2452

if not foreground:

2983

pidfilename = "/run/mandos.pid"

2984

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

2985

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

2453

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

2986

2454

pidfile = None

2987

2455

try:

2988

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

2456

pidfile = open(pidfilename, "w")

2989

2457

except IOError as e:

2990

2458

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

2991

2459

exc_info=e)

2992

2993

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

2994

("mandos", "mandos"),

2995

("nobody", "nogroup")):

2460

2461

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

2996

2462

try:

2997

2463

uid = pwd.getpwnam(name).pw_uid

2998

gid = pwd.getpwnam(group).pw_gid

2464

gid = pwd.getpwnam(name).pw_gid

2999

2465

break

3000

2466

except KeyError:

3001

2467

continue

3005

2471

try:

3006

2472

os.setgid(gid)

3007

2473

os.setuid(uid)

3008

if debug:

3009

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

3010

gid))

3011

2474

except OSError as error:

3012

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

3013

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

3014

2475

if error.errno != errno.EPERM:

3015

raise

3016

2476

raise error

2477

3017

2478

if debug:

3018

2479

# Enable all possible GnuTLS debugging

3019

2480

3020

2481

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

3021

2482

# - GnuTLS manual

3022

gnutls.global_set_log_level(11)

3023

3024

@gnutls.log_func

2483

gnutls.library.functions.gnutls_global_set_log_level(11)

2484

2485

@gnutls.library.types.gnutls_log_func

3025

2486

def debug_gnutls(level, string):

3026

2487

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

3027

3028

gnutls.global_set_log_function(debug_gnutls)

3029

2488

2489

(gnutls.library.functions

2490

.gnutls_global_set_log_function(debug_gnutls))

2491

3030

2492

# Redirect stdin so all checkers get /dev/null

3031

2493

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

3032

2494

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

3033

2495

if null > 2:

3034

2496

os.close(null)

3035

2497

3036

2498

# Need to fork before connecting to D-Bus

3037

2499

if not foreground:

3038

2500

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

3039

2501

daemon()

3040

3041

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

3042

# to inform GLib that threads will be used.

3043

GLib.threads_init()

3044

2502

2503

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

2504

# need to inform gobject that threads will be used.

2505

gobject.threads_init()

2506

3045

2507

global main_loop

3046

2508

# From the Avahi example code

3047

2509

DBusGMainLoop(set_as_default=True)

3048

main_loop = GLib.MainLoop()

2510

main_loop = gobject.MainLoop()

3049

2511

bus = dbus.SystemBus()

3050

2512

# End of Avahi example code

3051

2513

if use_dbus:

3052

2514

try:

3053

2515

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

3054

bus,

3055

do_not_queue=True)

3056

old_bus_name = dbus.service.BusName(

3057

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

3058

do_not_queue=True)

3059

except dbus.exceptions.DBusException as e:

2516

bus, do_not_queue=True)

2517

old_bus_name = (dbus.service.BusName

2518

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

2519

do_not_queue=True))

2520

except dbus.exceptions.NameExistsException as e:

3060

2521

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

3061

2522

use_dbus = False

3062

2523

server_settings["use_dbus"] = False

3063

2524

tcp_server.use_dbus = False

3064

if zeroconf:

3065

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

3066

service = AvahiServiceToSyslog(

3067

name=server_settings["servicename"],

3068

servicetype="_mandos._tcp",

3069

protocol=protocol,

3070

bus=bus)

3071

if server_settings["interface"]:

3072

service.interface = if_nametoindex(

3073

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

3074

2525

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2526

service = AvahiServiceToSyslog(name =

2527

server_settings["servicename"],

2528

servicetype = "_mandos._tcp",

2529

protocol = protocol, bus = bus)

2530

if server_settings["interface"]:

2531

service.interface = (if_nametoindex

2532

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

2533

3075

2534

global multiprocessing_manager

3076

2535

multiprocessing_manager = multiprocessing.Manager()

3077

2536

3078

2537

client_class = Client

3079

2538

if use_dbus:

3080

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

3081

2539

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

2540

3082

2541

client_settings = Client.config_parser(client_config)

3083

2542

old_client_settings = {}

3084

2543

clients_data = {}

3085

2544

3086

2545

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

3087

2546

global wnull

3088

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

2547

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

3089

2548

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

3090

2549

# mode

3091

2550

if debug or not foreground:

3092

2551

wnull.close()

3093

2552

3094

2553

# Get client data and settings from last running state.

3095

2554

if server_settings["restore"]:

3096

2555

try:

3097

2556

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

3098

if sys.version_info.major == 2:

3099

clients_data, old_client_settings = pickle.load(

3100

stored_state)

3101

else:

3102

bytes_clients_data, bytes_old_client_settings = (

3103

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

3104

# Fix bytes to strings

3105

# clients_data

3106

# .keys()

3107

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

3108

if isinstance(key, bytes)

3109

else key): value

3110

for key, value in

3111

bytes_clients_data.items()}

3112

del bytes_clients_data

3113

for key in clients_data:

3114

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

3115

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

3116

for k, v in

3117

clients_data[key].items()}

3118

clients_data[key] = value

3119

# .client_structure

3120

value["client_structure"] = [

3121

(s.decode("utf-8")

3122

if isinstance(s, bytes)

3123

else s) for s in

3124

value["client_structure"]]

3125

# .name & .host

3126

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

3127

if isinstance(value[k], bytes):

3128

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

3129

# old_client_settings

3130

# .keys()

3131

old_client_settings = {

3132

(key.decode("utf-8")

3133

if isinstance(key, bytes)

3134

else key): value

3135

for key, value in

3136

bytes_old_client_settings.items()}

3137

del bytes_old_client_settings

3138

# .host

3139

for value in old_client_settings.values():

3140

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

3141

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

3142

.decode("utf-8"))

2557

clients_data, old_client_settings = (pickle.load

2558

(stored_state))

3143

2559

os.remove(stored_state_path)

3144

2560

except IOError as e:

3145

2561

if e.errno == errno.ENOENT:

3146

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

3147

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

2562

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

2563

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

3148

2564

else:

3149

2565

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

3150

2566

exc_info=e)

3151

2567

raise

3152

2568

except EOFError as e:

3153

2569

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

3154

"EOFError:",

3155

exc_info=e)

3156

2570

"EOFError:", exc_info=e)

2571

3157

2572

with PGPEngine() as pgp:

3158

for client_name, client in clients_data.items():

2573

for client_name, client in clients_data.iteritems():

3159

2574

# Skip removed clients

3160

2575

if client_name not in client_settings:

3161

2576

continue

3162

2577

3163

2578

# Decide which value to use after restoring saved state.

3164

2579

# We have three different values: Old config file,

3165

2580

# new config file, and saved state.

3170

2585

# For each value in new config, check if it

3171

2586

# differs from the old config value (Except for

3172

2587

# the "secret" attribute)

3173

if (name != "secret"

3174

and (value !=

3175

old_client_settings[client_name][name])):

2588

if (name != "secret" and

2589

value != old_client_settings[client_name]

2590

[name]):

3176

2591

client[name] = value

3177

2592

except KeyError:

3178

2593

pass

3179

2594

3180

2595

# Clients who has passed its expire date can still be

3181

# enabled if its last checker was successful. A Client

2596

# enabled if its last checker was successful. Clients

3182

2597

# whose checker succeeded before we stored its state is

3183

2598

# assumed to have successfully run all checkers during

3184

2599

# downtime.

3186

2601

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

3187

2602

if not client["last_checked_ok"]:

3188

2603

logger.warning(

3189

"disabling client {} - Client never "

3190

"performed a successful checker".format(

3191

client_name))

2604

"disabling client {0} - Client never "

2605

"performed a successful checker"

2606

.format(client_name))

3192

2607

client["enabled"] = False

3193

2608

elif client["last_checker_status"] != 0:

3194

2609

logger.warning(

3195

"disabling client {} - Client last"

3196

" checker failed with error code"

3197

" {}".format(

3198

client_name,

3199

client["last_checker_status"]))

2610

"disabling client {0} - Client "

2611

"last checker failed with error code {1}"

2612

.format(client_name,

2613

client["last_checker_status"]))

3200

2614

client["enabled"] = False

3201

2615

else:

3202

client["expires"] = (

3203

datetime.datetime.utcnow()

3204

+ client["timeout"])

2616

client["expires"] = (datetime.datetime

2617

.utcnow()

2618

+ client["timeout"])

3205

2619

logger.debug("Last checker succeeded,"

3206

" keeping {} enabled".format(

3207

client_name))

2620

" keeping {0} enabled"

2621

.format(client_name))

3208

2622

try:

3209

client["secret"] = pgp.decrypt(

3210

client["encrypted_secret"],

3211

client_settings[client_name]["secret"])

2623

client["secret"] = (

2624

pgp.decrypt(client["encrypted_secret"],

2625

client_settings[client_name]

2626

["secret"]))

3212

2627

except PGPError:

3213

2628

# If decryption fails, we use secret from new settings

3214

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

3215

client_name))

3216

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

3217

["secret"])

3218

2629

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

2630

.format(client_name))

2631

client["secret"] = (

2632

client_settings[client_name]["secret"])

2633

3219

2634

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

3220

2635

for client_name in (set(old_client_settings)

3221

2636

- set(client_settings)):

3223

2638

for client_name in (set(client_settings)

3224

2639

- set(old_client_settings)):

3225

2640

clients_data[client_name] = client_settings[client_name]

3226

2641

3227

2642

# Create all client objects

3228

for client_name, client in clients_data.items():

2643

for client_name, client in clients_data.iteritems():

3229

2644

tcp_server.clients[client_name] = client_class(

3230

name=client_name,

3231

settings=client,

3232

server_settings=server_settings)

3233

2645

name = client_name, settings = client,

2646

server_settings = server_settings)

2647

3234

2648

if not tcp_server.clients:

3235

2649

logger.warning("No clients defined")

3236

2650

3237

2651

if not foreground:

3238

2652

if pidfile is not None:

3239

pid = os.getpid()

3240

2653

try:

3241

2654

with pidfile:

3242

print(pid, file=pidfile)

2655

pid = os.getpid()

2656

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

3243

2657

except IOError:

3244

2658

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

3245

2659

pidfilename, pid)

3246

2660

del pidfile

3247

2661

del pidfilename

3248

3249

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

3250

GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,

3251

lambda: main_loop.quit() and False)

3252

2662

2663

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

2664

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

2665

3253

2666

if use_dbus:

3254

3255

@alternate_dbus_interfaces(

3256

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

3257

class MandosDBusService(DBusObjectWithObjectManager):

2667

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

2668

"se.bsnet.fukt.Mandos"})

2669

class MandosDBusService(DBusObjectWithProperties):

3258

2670

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

3259

3260

2671

def __init__(self):

3261

2672

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

3262

3263

2673

_interface = "se.recompile.Mandos"

3264

2674

2675

@dbus_interface_annotations(_interface)

2676

def _foo(self):

2677

return { "org.freedesktop.DBus.Property"

2678

".EmitsChangedSignal":

2679

"false"}

2680

3265

2681

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

3266

2682

def ClientAdded(self, objpath):

3267

2683

"D-Bus signal"

3268

2684

pass

3269

2685

3270

2686

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

3271

2687

def ClientNotFound(self, fingerprint, address):

3272

2688

"D-Bus signal"

3273

2689

pass

3274

3275

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

3276

"true"})

2690

3277

2691

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

3278

2692

def ClientRemoved(self, objpath, name):

3279

2693

"D-Bus signal"

3280

2694

pass

3281

3282

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

3283

"true"})

2695

3284

2696

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

3285

2697

def GetAllClients(self):

3286

2698

"D-Bus method"

3287

return dbus.Array(c.dbus_object_path for c in

3288

tcp_server.clients.values())

3289

3290

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

3291

"true"})

2699

return dbus.Array(c.dbus_object_path

2700

for c in

2701

tcp_server.clients.itervalues())

2702

3292

2703

@dbus.service.method(_interface,

3293

2704

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

3294

2705

def GetAllClientsWithProperties(self):

3295

2706

"D-Bus method"

3296

2707

return dbus.Dictionary(

3297

{c.dbus_object_path: c.GetAll(

3298

"se.recompile.Mandos.Client")

3299

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

2708

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

2709

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

3300

2710

signature="oa{sv}")

3301

2711

3302

2712

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

3303

2713

def RemoveClient(self, object_path):

3304

2714

"D-Bus method"

3305

for c in tcp_server.clients.values():

2715

for c in tcp_server.clients.itervalues():

3306

2716

if c.dbus_object_path == object_path:

3307

2717

del tcp_server.clients[c.name]

3308

2718

c.remove_from_connection()

3309

# Don't signal the disabling

2719

# Don't signal anything except ClientRemoved

3310

2720

c.disable(quiet=True)

3311

# Emit D-Bus signal for removal

3312

self.client_removed_signal(c)

2721

# Emit D-Bus signal

2722

self.ClientRemoved(object_path, c.name)

3313

2723

return

3314

2724

raise KeyError(object_path)

3315

2725

3316

2726

del _interface

3317

3318

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

3319

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

3320

def GetManagedObjects(self):

3321

"""D-Bus method"""

3322

return dbus.Dictionary(

3323

{client.dbus_object_path:

3324

dbus.Dictionary(

3325

{interface: client.GetAll(interface)

3326

for interface in

3327

client._get_all_interface_names()})

3328

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

3329

3330

def client_added_signal(self, client):

3331

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

3332

if use_dbus:

3333

# New standard signal

3334

self.InterfacesAdded(

3335

client.dbus_object_path,

3336

dbus.Dictionary(

3337

{interface: client.GetAll(interface)

3338

for interface in

3339

client._get_all_interface_names()}))

3340

# Old signal

3341

self.ClientAdded(client.dbus_object_path)

3342

3343

def client_removed_signal(self, client):

3344

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

3345

if use_dbus:

3346

# New standard signal

3347

self.InterfacesRemoved(

3348

client.dbus_object_path,

3349

client._get_all_interface_names())

3350

# Old signal

3351

self.ClientRemoved(client.dbus_object_path,

3352

client.name)

3353

2727

3354

2728

mandos_dbus_service = MandosDBusService()

3355

3356

# Save modules to variables to exempt the modules from being

3357

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

3358

mp = multiprocessing

3359

wn = wnull

3360

2729

3361

2730

def cleanup():

3362

2731

"Cleanup function; run on exit"

3363

if zeroconf:

3364

service.cleanup()

3365

3366

mp.active_children()

3367

wn.close()

2732

service.cleanup()

2733

2734

multiprocessing.active_children()

2735

wnull.close()

3368

2736

if not (tcp_server.clients or client_settings):

3369

2737

return

3370

2738

3371

2739

# Store client before exiting. Secrets are encrypted with key

3372

2740

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

3373

2741

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

3374

2742

clients = {}

3375

2743

with PGPEngine() as pgp:

3376

for client in tcp_server.clients.values():

2744

for client in tcp_server.clients.itervalues():

3377

2745

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

3378

2746

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

3379

2747

key)

3380

2748

client_dict = {}

3381

2749

3382

2750

# A list of attributes that can not be pickled

3383

2751

# + secret.

3384

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

3385

"checker", "server_settings"}

3386

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

3387

.Object):

2752

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

2753

"checker", "server_settings"))

2754

for name, typ in (inspect.getmembers

2755

(dbus.service.Object)):

3388

2756

exclude.add(name)

3389

2757

3390

2758

client_dict["encrypted_secret"] = (client

3391

2759

.encrypted_secret)

3392

2760

for attr in client.client_structure:

3393

2761

if attr not in exclude:

3394

2762

client_dict[attr] = getattr(client, attr)

3395

2763

3396

2764

clients[client.name] = client_dict

3397

2765

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

3398

2766

3399

2767

try:

3400

with tempfile.NamedTemporaryFile(

3401

mode='wb',

3402

suffix=".pickle",

3403

prefix='clients-',

3404

dir=os.path.dirname(stored_state_path),

3405

delete=False) as stored_state:

3406

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

3407

protocol=2)

3408

tempname = stored_state.name

2768

with (tempfile.NamedTemporaryFile

2769

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

2770

dir=os.path.dirname(stored_state_path),

2771

delete=False)) as stored_state:

2772

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

2773

tempname=stored_state.name

3409

2774

os.rename(tempname, stored_state_path)

3410

2775

except (IOError, OSError) as e:

3411

2776

if not debug:

3414

2779

except NameError:

3415

2780

pass

3416

2781

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

3417

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

2782

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

3418

2783

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

3419

2784

else:

3420

2785

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

3421

2786

exc_info=e)

3422

raise

3423

2787

raise e

2788

3424

2789

# Delete all clients, and settings from config

3425

2790

while tcp_server.clients:

3426

2791

name, client = tcp_server.clients.popitem()

3427

2792

if use_dbus:

3428

2793

client.remove_from_connection()

3429

# Don't signal the disabling

2794

# Don't signal anything except ClientRemoved

3430

2795

client.disable(quiet=True)

3431

# Emit D-Bus signal for removal

3432

2796

if use_dbus:

3433

mandos_dbus_service.client_removed_signal(client)

2797

# Emit D-Bus signal

2798

mandos_dbus_service.ClientRemoved(client

2799

.dbus_object_path,

2800

client.name)

3434

2801

client_settings.clear()

3435

2802

3436

2803

atexit.register(cleanup)

3437

3438

for client in tcp_server.clients.values():

2804

2805

for client in tcp_server.clients.itervalues():

3439

2806

if use_dbus:

3440

# Emit D-Bus signal for adding

3441

mandos_dbus_service.client_added_signal(client)

2807

# Emit D-Bus signal

2808

mandos_dbus_service.ClientAdded(client.dbus_object_path)

3442

2809

# Need to initiate checking of clients

3443

2810

if client.enabled:

3444

2811

client.init_checker()

3445

2812

3446

2813

tcp_server.enable()

3447

2814

tcp_server.server_activate()

3448

2815

3449

2816

# Find out what port we got

3450

if zeroconf:

3451

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

2817

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

3452

2818

if use_ipv6:

3453

2819

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

3454

2820

" flowinfo %d, scope_id %d",

3456

2822

else: # IPv4

3457

2823

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

3458

2824

*tcp_server.socket.getsockname())

3459

3460

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

3461

2825

2826

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

2827

3462

2828

try:

3463

if zeroconf:

3464

# From the Avahi example code

3465

try:

3466

service.activate()

3467

except dbus.exceptions.DBusException as error:

3468

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

3469

cleanup()

3470

sys.exit(1)

3471

# End of Avahi example code

3472

3473

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

3474

lambda *args, **kwargs:

3475

(tcp_server.handle_request

3476

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

3477

2829

# From the Avahi example code

2830

try:

2831

service.activate()

2832

except dbus.exceptions.DBusException as error:

2833

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

2834

cleanup()

2835

sys.exit(1)

2836

# End of Avahi example code

2837

2838

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

2839

lambda *args, **kwargs:

2840

(tcp_server.handle_request

2841

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

2842

3478

2843

logger.debug("Starting main loop")

3479

2844

main_loop.run()

3480

2845

except AvahiError as error:

3489

2854

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

3490

2855

cleanup()

3491

2856

3492

3493

2857

if __name__ == '__main__':

3494

2858

main()