/mandos/trunk : revision 654

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#!/usr/bin/python

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

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#

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#

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

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#

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#

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

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# service publisher, downloaded from

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

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

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

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

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#

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#

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# Everything else is

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#

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#

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

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

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

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

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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

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# GNU General Public License for more details.

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#

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#

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

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# along with this program. If not, see

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

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#

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#

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

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#

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#

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from __future__ import (division, absolute_import, print_function,

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unicode_literals)

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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 = "1.7.13"

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SO_BINDTODEVICE = None

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version = "1.6.3"

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

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

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return encoded

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def encrypt(self, data, password):

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passphrase = self.password_encode(password)

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with tempfile.NamedTemporaryFile(

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dir=self.tempdir) as passfile:

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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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302

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class AvahiError(Exception):

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

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self.value = value

306

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

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**kwargs)

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

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def __unicode__(self):

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return unicode(repr(self.value))

309

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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.

320

237

321

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Attributes:

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

323

240

Used to optionally bind to the specified interface.

335

252

server: D-Bus Server

336

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bus: dbus.SystemBus()

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"""

338

339

def __init__(self,

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interface=avahi.IF_UNSPEC,

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name=None,

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servicetype=None,

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port=None,

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TXT=None,

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domain="",

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host="",

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max_renames=32768,

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protocol=avahi.PROTO_UNSPEC,

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bus=None):

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

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

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

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protocol = avahi.PROTO_UNSPEC, bus = None):

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self.interface = interface

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self.name = name

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262

self.type = servicetype

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self.server = None

362

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self.bus = bus

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273

self.entry_group_state_changed_match = None

364

365

def rename(self, remove=True):

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275

def rename(self):

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

367

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if self.rename_count >= self.max_renames:

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278

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

369

279

" after %i retries, exiting.",

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self.rename_count)

371

281

raise AvahiServiceError("Too many renames")

372

self.name = str(

373

self.server.GetAlternativeServiceName(self.name))

374

self.rename_count += 1

282

self.name = unicode(self.server

283

.GetAlternativeServiceName(self.name))

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

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285

self.name)

377

if remove:

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self.remove()

286

self.remove()

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try:

380

288

self.add()

381

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except dbus.exceptions.DBusException as error:

382

if (error.get_dbus_name()

383

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

384

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

385

return self.rename(remove=False)

386

else:

387

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

388

self.cleanup()

389

os._exit(1)

390

290

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

291

self.cleanup()

292

os._exit(1)

293

self.rename_count += 1

294

391

295

def remove(self):

392

296

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

393

297

if self.entry_group_state_changed_match is not None:

395

299

self.entry_group_state_changed_match = None

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300

if self.group is not None:

397

301

self.group.Reset()

398

302

399

303

def add(self):

400

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

401

305

self.remove()

418

322

dbus.UInt16(self.port),

419

323

avahi.string_array_to_txt_array(self.TXT))

420

324

self.group.Commit()

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325

422

326

def entry_group_state_changed(self, state, error):

423

327

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

424

328

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

425

329

426

330

if state == avahi.ENTRY_GROUP_ESTABLISHED:

427

331

logger.debug("Zeroconf service established.")

428

332

elif state == avahi.ENTRY_GROUP_COLLISION:

430

334

self.rename()

431

335

elif state == avahi.ENTRY_GROUP_FAILURE:

432

336

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

433

str(error))

434

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

435

337

unicode(error))

338

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

339

.format(error))

340

436

341

def cleanup(self):

437

342

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

438

343

if self.group is not None:

443

348

pass

444

349

self.group = None

445

350

self.remove()

446

351

447

352

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

448

353

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

449

354

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

450

bad_states = {

451

avahi.SERVER_INVALID: "Zeroconf server invalid",

452

avahi.SERVER_REGISTERING: None,

453

avahi.SERVER_COLLISION: "Zeroconf server name collision",

454

avahi.SERVER_FAILURE: "Zeroconf server failure",

455

}

355

bad_states = { avahi.SERVER_INVALID:

356

"Zeroconf server invalid",

357

avahi.SERVER_REGISTERING: None,

358

avahi.SERVER_COLLISION:

359

"Zeroconf server name collision",

360

avahi.SERVER_FAILURE:

361

"Zeroconf server failure" }

456

362

if state in bad_states:

457

363

if bad_states[state] is not None:

458

364

if error is None:

461

367

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

462

368

self.cleanup()

463

369

elif state == avahi.SERVER_RUNNING:

464

try:

465

self.add()

466

except dbus.exceptions.DBusException as error:

467

if (error.get_dbus_name()

468

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

469

logger.info("Local Zeroconf service name"

470

" collision.")

471

return self.rename(remove=False)

472

else:

473

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

474

self.cleanup()

475

os._exit(1)

370

self.add()

476

371

else:

477

372

if error is None:

478

373

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

479

374

else:

480

375

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

481

376

482

377

def activate(self):

483

378

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

484

379

if self.server is None:

488

383

follow_name_owner_changes=True),

489

384

avahi.DBUS_INTERFACE_SERVER)

490

385

self.server.connect_to_signal("StateChanged",

491

self.server_state_changed)

386

self.server_state_changed)

492

387

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

493

388

494

389

495

390

class AvahiServiceToSyslog(AvahiService):

496

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

391

def rename(self):

497

392

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

498

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

499

syslogger.setFormatter(logging.Formatter(

500

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

501

.format(self.name)))

393

ret = AvahiService.rename(self)

394

syslogger.setFormatter(logging.Formatter

395

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

396

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

397

.format(self.name)))

502

398

return ret

503

399

504

400

505

# Pretend that we have a GnuTLS module

506

class GnuTLS(object):

507

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

508

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

509

510

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

511

if library is None:

512

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

513

_library = ctypes.cdll.LoadLibrary(library)

514

del library

515

_need_version = b"3.3.0"

516

517

def __init__(self):

518

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

519

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

520

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

521

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

522

.format(self._need_version))

523

524

# Unless otherwise indicated, the constants and types below are

525

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

526

527

# Constants

528

E_SUCCESS = 0

529

E_INTERRUPTED = -52

530

E_AGAIN = -28

531

CRT_OPENPGP = 2

532

CLIENT = 2

533

SHUT_RDWR = 0

534

CRD_CERTIFICATE = 1

535

E_NO_CERTIFICATE_FOUND = -49

536

OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h

537

538

# Types

539

class session_int(ctypes.Structure):

540

_fields_ = []

541

session_t = ctypes.POINTER(session_int)

542

543

class certificate_credentials_st(ctypes.Structure):

544

_fields_ = []

545

certificate_credentials_t = ctypes.POINTER(

546

certificate_credentials_st)

547

certificate_type_t = ctypes.c_int

548

549

class datum_t(ctypes.Structure):

550

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

551

('size', ctypes.c_uint)]

552

553

class openpgp_crt_int(ctypes.Structure):

554

_fields_ = []

555

openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)

556

openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h

557

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

558

credentials_type_t = ctypes.c_int

559

transport_ptr_t = ctypes.c_void_p

560

close_request_t = ctypes.c_int

561

562

# Exceptions

563

class Error(Exception):

564

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

565

# exception might be raised from within GnuTLS.__init__,

566

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

567

# global variable has happened.

568

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

569

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

570

# code is passed, convert it to a string with

571

# gnutls.strerror()

572

self.code = code

573

if message is None and code is not None:

574

message = GnuTLS.strerror(code)

575

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

576

message, *args)

577

578

class CertificateSecurityError(Error):

579

pass

580

581

# Classes

582

class Credentials(object):

583

def __init__(self):

584

self._c_object = gnutls.certificate_credentials_t()

585

gnutls.certificate_allocate_credentials(

586

ctypes.byref(self._c_object))

587

self.type = gnutls.CRD_CERTIFICATE

588

589

def __del__(self):

590

gnutls.certificate_free_credentials(self._c_object)

591

592

class ClientSession(object):

593

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

594

self._c_object = gnutls.session_t()

595

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

596

gnutls.set_default_priority(self._c_object)

597

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

598

gnutls.handshake_set_private_extensions(self._c_object,

599

True)

600

self.socket = socket

601

if credentials is None:

602

credentials = gnutls.Credentials()

603

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

604

ctypes.cast(credentials._c_object,

605

ctypes.c_void_p))

606

self.credentials = credentials

607

608

def __del__(self):

609

gnutls.deinit(self._c_object)

610

611

def handshake(self):

612

return gnutls.handshake(self._c_object)

613

614

def send(self, data):

615

data = bytes(data)

616

data_len = len(data)

617

while data_len > 0:

618

data_len -= gnutls.record_send(self._c_object,

619

data[-data_len:],

620

data_len)

621

622

def bye(self):

623

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

624

625

# Error handling functions

626

def _error_code(result):

627

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

628

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

629

if result >= 0:

630

return result

631

if result == gnutls.E_NO_CERTIFICATE_FOUND:

632

raise gnutls.CertificateSecurityError(code=result)

633

raise gnutls.Error(code=result)

634

635

def _retry_on_error(result, func, arguments):

636

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

637

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

638

while result < 0:

639

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

640

return _error_code(result)

641

result = func(*arguments)

642

return result

643

644

# Unless otherwise indicated, the function declarations below are

645

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

646

647

# Functions

648

priority_set_direct = _library.gnutls_priority_set_direct

649

priority_set_direct.argtypes = [session_t, ctypes.c_char_p,

650

ctypes.POINTER(ctypes.c_char_p)]

651

priority_set_direct.restype = _error_code

652

653

init = _library.gnutls_init

654

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

655

init.restype = _error_code

656

657

set_default_priority = _library.gnutls_set_default_priority

658

set_default_priority.argtypes = [session_t]

659

set_default_priority.restype = _error_code

660

661

record_send = _library.gnutls_record_send

662

record_send.argtypes = [session_t, ctypes.c_void_p,

663

ctypes.c_size_t]

664

record_send.restype = ctypes.c_ssize_t

665

record_send.errcheck = _retry_on_error

666

667

certificate_allocate_credentials = (

668

_library.gnutls_certificate_allocate_credentials)

669

certificate_allocate_credentials.argtypes = [

670

ctypes.POINTER(certificate_credentials_t)]

671

certificate_allocate_credentials.restype = _error_code

672

673

certificate_free_credentials = (

674

_library.gnutls_certificate_free_credentials)

675

certificate_free_credentials.argtypes = [

676

certificate_credentials_t]

677

certificate_free_credentials.restype = None

678

679

handshake_set_private_extensions = (

680

_library.gnutls_handshake_set_private_extensions)

681

handshake_set_private_extensions.argtypes = [session_t,

682

ctypes.c_int]

683

handshake_set_private_extensions.restype = None

684

685

credentials_set = _library.gnutls_credentials_set

686

credentials_set.argtypes = [session_t, credentials_type_t,

687

ctypes.c_void_p]

688

credentials_set.restype = _error_code

689

690

strerror = _library.gnutls_strerror

691

strerror.argtypes = [ctypes.c_int]

692

strerror.restype = ctypes.c_char_p

693

694

certificate_type_get = _library.gnutls_certificate_type_get

695

certificate_type_get.argtypes = [session_t]

696

certificate_type_get.restype = _error_code

697

698

certificate_get_peers = _library.gnutls_certificate_get_peers

699

certificate_get_peers.argtypes = [session_t,

700

ctypes.POINTER(ctypes.c_uint)]

701

certificate_get_peers.restype = ctypes.POINTER(datum_t)

702

703

global_set_log_level = _library.gnutls_global_set_log_level

704

global_set_log_level.argtypes = [ctypes.c_int]

705

global_set_log_level.restype = None

706

707

global_set_log_function = _library.gnutls_global_set_log_function

708

global_set_log_function.argtypes = [log_func]

709

global_set_log_function.restype = None

710

711

deinit = _library.gnutls_deinit

712

deinit.argtypes = [session_t]

713

deinit.restype = None

714

715

handshake = _library.gnutls_handshake

716

handshake.argtypes = [session_t]

717

handshake.restype = _error_code

718

handshake.errcheck = _retry_on_error

719

720

transport_set_ptr = _library.gnutls_transport_set_ptr

721

transport_set_ptr.argtypes = [session_t, transport_ptr_t]

722

transport_set_ptr.restype = None

723

724

bye = _library.gnutls_bye

725

bye.argtypes = [session_t, close_request_t]

726

bye.restype = _error_code

727

bye.errcheck = _retry_on_error

728

729

check_version = _library.gnutls_check_version

730

check_version.argtypes = [ctypes.c_char_p]

731

check_version.restype = ctypes.c_char_p

732

733

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

734

735

openpgp_crt_init = _library.gnutls_openpgp_crt_init

736

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

737

openpgp_crt_init.restype = _error_code

738

739

openpgp_crt_import = _library.gnutls_openpgp_crt_import

740

openpgp_crt_import.argtypes = [openpgp_crt_t,

741

ctypes.POINTER(datum_t),

742

openpgp_crt_fmt_t]

743

openpgp_crt_import.restype = _error_code

744

745

openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self

746

openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,

747

ctypes.POINTER(ctypes.c_uint)]

748

openpgp_crt_verify_self.restype = _error_code

749

750

openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit

751

openpgp_crt_deinit.argtypes = [openpgp_crt_t]

752

openpgp_crt_deinit.restype = None

753

754

openpgp_crt_get_fingerprint = (

755

_library.gnutls_openpgp_crt_get_fingerprint)

756

openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,

757

ctypes.c_void_p,

758

ctypes.POINTER(

759

ctypes.c_size_t)]

760

openpgp_crt_get_fingerprint.restype = _error_code

761

762

# Remove non-public functions

763

del _error_code, _retry_on_error

764

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

765

gnutls = GnuTLS()

766

767

768

def call_pipe(connection, # : multiprocessing.Connection

769

func, *args, **kwargs):

770

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

771

772

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

773

return value on the provided multiprocessing.Connection.

774

"""

775

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

776

connection.close()

401

def timedelta_to_milliseconds(td):

402

"Convert a datetime.timedelta() to milliseconds"

403

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

404

+ (td.seconds * 1000)

405

+ (td.microseconds // 1000))

777

406

778

407

779

408

class Client(object):

780

409

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

781

410

782

411

Attributes:

783

412

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

784

413

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

786

415

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

787

416

to see if the client lives.

788

417

'None' if no process is running.

789

checker_callback_tag: a GLib event source tag, or None

418

checker_callback_tag: a gobject event source tag, or None

790

419

checker_command: string; External command which is run to check

791

420

if client lives. %() expansions are done at

792

421

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

793

422

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

794

checker_initiator_tag: a GLib event source tag, or None

423

checker_initiator_tag: a gobject event source tag, or None

795

424

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

796

425

client_structure: Object describing what attributes a client has

797

426

and is used for storing the client at exit

798

427

current_checker_command: string; current running checker_command

799

disable_initiator_tag: a GLib event source tag, or None

428

disable_initiator_tag: a gobject event source tag, or None

800

429

enabled: bool()

801

430

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

802

431

uniquely identify the client

807

436

last_checker_status: integer between 0 and 255 reflecting exit

808

437

status of last checker. -1 reflects crashed

809

438

checker, -2 means no checker completed yet.

810

last_checker_signal: The signal which killed the last checker, if

811

last_checker_status is -1

812

439

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

813

440

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

814

441

D-Bus identifiers

821

448

disabled, or None

822

449

server_settings: The server_settings dict from main()

823

450

"""

824

451

825

452

runtime_expansions = ("approval_delay", "approval_duration",

826

453

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

827

454

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

828

455

"last_approval_request", "last_checked_ok",

829

456

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

830

client_defaults = {

831

"timeout": "PT5M",

832

"extended_timeout": "PT15M",

833

"interval": "PT2M",

834

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

835

"host": "",

836

"approval_delay": "PT0S",

837

"approval_duration": "PT1S",

838

"approved_by_default": "True",

839

"enabled": "True",

840

}

841

457

client_defaults = { "timeout": "PT5M",

458

"extended_timeout": "PT15M",

459

"interval": "PT2M",

460

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

461

"host": "",

462

"approval_delay": "PT0S",

463

"approval_duration": "PT1S",

464

"approved_by_default": "True",

465

"enabled": "True",

466

}

467

468

def timeout_milliseconds(self):

469

"Return the 'timeout' attribute in milliseconds"

470

return timedelta_to_milliseconds(self.timeout)

471

472

def extended_timeout_milliseconds(self):

473

"Return the 'extended_timeout' attribute in milliseconds"

474

return timedelta_to_milliseconds(self.extended_timeout)

475

476

def interval_milliseconds(self):

477

"Return the 'interval' attribute in milliseconds"

478

return timedelta_to_milliseconds(self.interval)

479

480

def approval_delay_milliseconds(self):

481

return timedelta_to_milliseconds(self.approval_delay)

482

842

483

@staticmethod

843

484

def config_parser(config):

844

485

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

851

492

for client_name in config.sections():

852

493

section = dict(config.items(client_name))

853

494

client = settings[client_name] = {}

854

495

855

496

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

856

497

# Reformat values from string types to Python types

857

498

client["approved_by_default"] = config.getboolean(

858

499

client_name, "approved_by_default")

859

500

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

860

501

"enabled")

861

862

# Uppercase and remove spaces from fingerprint for later

863

# comparison purposes with return value from the

864

# fingerprint() function

502

865

503

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

866

504

.replace(" ", ""))

867

505

if "secret" in section:

868

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

869

.encode("utf-8"),

870

"base64")

506

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

871

507

elif "secfile" in section:

872

508

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

873

509

(section["secfile"])),

874

510

"rb") as secfile:

875

511

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

876

512

else:

877

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

513

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

878

514

.format(section))

879

515

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

880

516

client["extended_timeout"] = string_to_delta(

888

524

client["last_approval_request"] = None

889

525

client["last_checked_ok"] = None

890

526

client["last_checker_status"] = -2

891

527

892

528

return settings

893

894

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

529

530

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

895

531

self.name = name

896

532

if server_settings is None:

897

533

server_settings = {}

898

534

self.server_settings = server_settings

899

535

# adding all client settings

900

for setting, value in settings.items():

536

for setting, value in settings.iteritems():

901

537

setattr(self, setting, value)

902

538

903

539

if self.enabled:

904

540

if not hasattr(self, "last_enabled"):

905

541

self.last_enabled = datetime.datetime.utcnow()

909

545

else:

910

546

self.last_enabled = None

911

547

self.expires = None

912

548

913

549

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

550

# Uppercase and remove spaces from fingerprint for later

551

# comparison purposes with return value from the fingerprint()

552

# function

914

553

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

915

554

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

916

555

datetime.datetime.utcnow())

917

556

918

557

# attributes specific for this server instance

919

558

self.checker = None

920

559

self.checker_initiator_tag = None

923

562

self.current_checker_command = None

924

563

self.approved = None

925

564

self.approvals_pending = 0

926

self.changedstate = multiprocessing_manager.Condition(

927

multiprocessing_manager.Lock())

928

self.client_structure = [attr

929

for attr in self.__dict__.keys()

565

self.changedstate = (multiprocessing_manager

566

.Condition(multiprocessing_manager

567

.Lock()))

568

self.client_structure = [attr for attr in

569

self.__dict__.iterkeys()

930

570

if not attr.startswith("_")]

931

571

self.client_structure.append("client_structure")

932

933

for name, t in inspect.getmembers(

934

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

572

573

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

574

lambda obj:

575

isinstance(obj,

576

property)):

935

577

if not name.startswith("_"):

936

578

self.client_structure.append(name)

937

579

938

580

# Send notice to process children that client state has changed

939

581

def send_changedstate(self):

940

582

with self.changedstate:

941

583

self.changedstate.notify_all()

942

584

943

585

def enable(self):

944

586

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

945

587

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

950

592

self.last_enabled = datetime.datetime.utcnow()

951

593

self.init_checker()

952

594

self.send_changedstate()

953

595

954

596

def disable(self, quiet=True):

955

597

"""Disable this client."""

956

598

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

958

600

if not quiet:

959

601

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

960

602

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

961

GLib.source_remove(self.disable_initiator_tag)

603

gobject.source_remove(self.disable_initiator_tag)

962

604

self.disable_initiator_tag = None

963

605

self.expires = None

964

606

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

965

GLib.source_remove(self.checker_initiator_tag)

607

gobject.source_remove(self.checker_initiator_tag)

966

608

self.checker_initiator_tag = None

967

609

self.stop_checker()

968

610

self.enabled = False

969

611

if not quiet:

970

612

self.send_changedstate()

971

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

613

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

972

614

return False

973

615

974

616

def __del__(self):

975

617

self.disable()

976

618

977

619

def init_checker(self):

978

620

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

979

621

# and every interval from then on.

980

622

if self.checker_initiator_tag is not None:

981

GLib.source_remove(self.checker_initiator_tag)

982

self.checker_initiator_tag = GLib.timeout_add(

983

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

984

self.start_checker)

623

gobject.source_remove(self.checker_initiator_tag)

624

self.checker_initiator_tag = (gobject.timeout_add

625

(self.interval_milliseconds(),

626

self.start_checker))

985

627

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

986

628

if self.disable_initiator_tag is not None:

987

GLib.source_remove(self.disable_initiator_tag)

988

self.disable_initiator_tag = GLib.timeout_add(

989

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

629

gobject.source_remove(self.disable_initiator_tag)

630

self.disable_initiator_tag = (gobject.timeout_add

631

(self.timeout_milliseconds(),

632

self.disable))

990

633

# Also start a new checker *right now*.

991

634

self.start_checker()

992

993

def checker_callback(self, source, condition, connection,

994

command):

635

636

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

995

637

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

996

638

self.checker_callback_tag = None

997

639

self.checker = None

998

# Read return code from connection (see call_pipe)

999

returncode = connection.recv()

1000

connection.close()

1001

1002

if returncode >= 0:

1003

self.last_checker_status = returncode

1004

self.last_checker_signal = None

640

if os.WIFEXITED(condition):

641

self.last_checker_status = os.WEXITSTATUS(condition)

1005

642

if self.last_checker_status == 0:

1006

643

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

1007

644

vars(self))

1008

645

self.checked_ok()

1009

646

else:

1010

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

647

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

648

vars(self))

1011

649

else:

1012

650

self.last_checker_status = -1

1013

self.last_checker_signal = -returncode

1014

651

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

1015

652

vars(self))

1016

return False

1017

653

1018

654

def checked_ok(self):

1019

655

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

1020

656

self.last_checked_ok = datetime.datetime.utcnow()

1021

657

self.last_checker_status = 0

1022

self.last_checker_signal = None

1023

658

self.bump_timeout()

1024

659

1025

660

def bump_timeout(self, timeout=None):

1026

661

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

1027

662

if timeout is None:

1028

663

timeout = self.timeout

1029

664

if self.disable_initiator_tag is not None:

1030

GLib.source_remove(self.disable_initiator_tag)

665

gobject.source_remove(self.disable_initiator_tag)

1031

666

self.disable_initiator_tag = None

1032

667

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

1033

self.disable_initiator_tag = GLib.timeout_add(

1034

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

668

self.disable_initiator_tag = (gobject.timeout_add

669

(timedelta_to_milliseconds

670

(timeout), self.disable))

1035

671

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

1036

672

1037

673

def need_approval(self):

1038

674

self.last_approval_request = datetime.datetime.utcnow()

1039

675

1040

676

def start_checker(self):

1041

677

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

1042

678

1043

679

If a checker already exists, leave it running and do

1044

680

nothing."""

1045

681

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

1050

686

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

1051

687

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

1052

688

# should be.

1053

1054

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

1055

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

1056

self.checker.join()

1057

self.checker = None

689

690

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

691

try:

692

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

693

except AttributeError:

694

pass

695

except OSError as error:

696

if error.errno != errno.ECHILD:

697

raise

698

else:

699

if pid:

700

logger.warning("Checker was a zombie")

701

gobject.source_remove(self.checker_callback_tag)

702

self.checker_callback(pid, status,

703

self.current_checker_command)

1058

704

# Start a new checker if needed

1059

705

if self.checker is None:

1060

706

# Escape attributes for the shell

1061

escaped_attrs = {

1062

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

1063

for attr in self.runtime_expansions}

707

escaped_attrs = dict(

708

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

709

for attr in

710

self.runtime_expansions)

1064

711

try:

1065

712

command = self.checker_command % escaped_attrs

1066

713

except TypeError as error:

1067

714

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

1068

self.checker_command,

715

self.checker_command, exc_info=error)

716

return True # Try again later

717

self.current_checker_command = command

718

try:

719

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

720

command, self.name)

721

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

722

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

723

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

724

# always replaced by /dev/null.)

725

# The exception is when not debugging but nevertheless

726

# running in the foreground; use the previously

727

# created wnull.

728

popen_args = {}

729

if (not self.server_settings["debug"]

730

and self.server_settings["foreground"]):

731

popen_args.update({"stdout": wnull,

732

"stderr": wnull })

733

self.checker = subprocess.Popen(command,

734

close_fds=True,

735

shell=True, cwd="/",

736

**popen_args)

737

except OSError as error:

738

logger.error("Failed to start subprocess",

1069

739

exc_info=error)

1070

return True # Try again later

1071

self.current_checker_command = command

1072

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

1073

self.name)

1074

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

1075

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

1076

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

1077

# always replaced by /dev/null.)

1078

# The exception is when not debugging but nevertheless

1079

# running in the foreground; use the previously

1080

# created wnull.

1081

popen_args = {"close_fds": True,

1082

"shell": True,

1083

"cwd": "/"}

1084

if (not self.server_settings["debug"]

1085

and self.server_settings["foreground"]):

1086

popen_args.update({"stdout": wnull,

1087

"stderr": wnull})

1088

pipe = multiprocessing.Pipe(duplex=False)

1089

self.checker = multiprocessing.Process(

1090

target=call_pipe,

1091

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

1092

kwargs=popen_args)

1093

self.checker.start()

1094

self.checker_callback_tag = GLib.io_add_watch(

1095

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

1096

self.checker_callback, pipe[0], command)

1097

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

740

return True

741

self.checker_callback_tag = (gobject.child_watch_add

742

(self.checker.pid,

743

self.checker_callback,

744

data=command))

745

# The checker may have completed before the gobject

746

# watch was added. Check for this.

747

try:

748

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

749

except OSError as error:

750

if error.errno == errno.ECHILD:

751

# This should never happen

752

logger.error("Child process vanished",

753

exc_info=error)

754

return True

755

raise

756

if pid:

757

gobject.source_remove(self.checker_callback_tag)

758

self.checker_callback(pid, status, command)

759

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

1098

760

return True

1099

761

1100

762

def stop_checker(self):

1101

763

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

1102

764

if self.checker_callback_tag:

1103

GLib.source_remove(self.checker_callback_tag)

765

gobject.source_remove(self.checker_callback_tag)

1104

766

self.checker_callback_tag = None

1105

767

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

1106

768

return

1107

769

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

1108

self.checker.terminate()

770

try:

771

self.checker.terminate()

772

#time.sleep(0.5)

773

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

774

# self.checker.kill()

775

except OSError as error:

776

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

777

raise

1109

778

self.checker = None

1110

779

1111

780

1112

def dbus_service_property(dbus_interface,

1113

signature="v",

1114

access="readwrite",

1115

byte_arrays=False):

781

def dbus_service_property(dbus_interface, signature="v",

782

access="readwrite", byte_arrays=False):

1116

783

"""Decorators for marking methods of a DBusObjectWithProperties to

1117

784

become properties on the D-Bus.

1118

785

1119

786

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

1120

787

and with one argument by "Set".

1121

788

1122

789

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

1123

790

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

1124

791

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

1127

794

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

1128

795

if byte_arrays and signature != "ay":

1129

796

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

1130

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

1131

797

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

1132

798

def decorator(func):

1133

799

func._dbus_is_property = True

1134

800

func._dbus_interface = dbus_interface

1137

803

func._dbus_name = func.__name__

1138

804

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

1139

805

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

1140

func._dbus_get_args_options = {'byte_arrays': byte_arrays}

806

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

1141

807

return func

1142

1143

808

return decorator

1144

809

1145

810

1146

811

def dbus_interface_annotations(dbus_interface):

1147

812

"""Decorator for marking functions returning interface annotations

1148

813

1149

814

Usage:

1150

815

1151

816

@dbus_interface_annotations("org.example.Interface")

1152

817

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

1153

818

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

1154

819

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

1155

820

"false"}

1156

821

"""

1157

1158

822

def decorator(func):

1159

823

func._dbus_is_interface = True

1160

824

func._dbus_interface = dbus_interface

1161

825

func._dbus_name = dbus_interface

1162

826

return func

1163

1164

827

return decorator

1165

828

1166

829

1167

830

def dbus_annotations(annotations):

1168

831

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

1169

832

Usage:

1170

1171

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

1172

"org.freedesktop.DBus.Property."

1173

"EmitsChangedSignal": "false"})

833

1174

834

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

1175

835

access="r")

836

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

837

"org.freedesktop.DBus.Property."

838

"EmitsChangedSignal": "false"})

1176

839

def Property_dbus_property(self):

1177

840

return dbus.Boolean(False)

1178

1179

See also the DBusObjectWithAnnotations class.

1180

841

"""

1181

1182

842

def decorator(func):

1183

843

func._dbus_annotations = annotations

1184

844

return func

1185

1186

845

return decorator

1187

846

1188

847

1189

848

class DBusPropertyException(dbus.exceptions.DBusException):

1190

849

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

1191

850

"""

1192

pass

851

def __unicode__(self):

852

return unicode(str(self))

1193

853

1194

854

1195

855

class DBusPropertyAccessException(DBusPropertyException):

1204

864

pass

1205

865

1206

866

1207

class DBusObjectWithAnnotations(dbus.service.Object):

1208

"""A D-Bus object with annotations.

1209

1210

Classes inheriting from this can use the dbus_annotations

1211

decorator to add annotations to methods or signals.

867

class DBusObjectWithProperties(dbus.service.Object):

868

"""A D-Bus object with properties.

869

870

Classes inheriting from this can use the dbus_service_property

871

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

872

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

1212

873

"""

1213

874

1214

875

@staticmethod

1215

876

def _is_dbus_thing(thing):

1216

877

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

1217

878

1218

879

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

1219

880

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

1220

881

"""

1221

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

882

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

1222

883

False)

1223

884

1224

885

def _get_all_dbus_things(self, thing):

1225

886

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

1226

887

"""

1227

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

888

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

889

name),

1228

890

athing.__get__(self))

1229

891

for cls in self.__class__.__mro__

1230

892

for name, athing in

1231

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

1232

1233

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1234

out_signature="s",

1235

path_keyword='object_path',

1236

connection_keyword='connection')

1237

def Introspect(self, object_path, connection):

1238

"""Overloading of standard D-Bus method.

1239

1240

Inserts annotation tags on methods and signals.

1241

"""

1242

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

1243

connection)

1244

try:

1245

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

1246

1247

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

1248

# Add annotation tags

1249

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

1250

for tag in if_tag.getElementsByTagName(typ):

1251

annots = dict()

1252

for name, prop in (self.

1253

_get_all_dbus_things(typ)):

1254

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

1255

and prop._dbus_interface

1256

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

1257

annots.update(getattr(

1258

prop, "_dbus_annotations", {}))

1259

for name, value in annots.items():

1260

ann_tag = document.createElement(

1261

"annotation")

1262

ann_tag.setAttribute("name", name)

1263

ann_tag.setAttribute("value", value)

1264

tag.appendChild(ann_tag)

1265

# Add interface annotation tags

1266

for annotation, value in dict(

1267

itertools.chain.from_iterable(

1268

annotations().items()

1269

for name, annotations

1270

in self._get_all_dbus_things("interface")

1271

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

1272

)).items():

1273

ann_tag = document.createElement("annotation")

1274

ann_tag.setAttribute("name", annotation)

1275

ann_tag.setAttribute("value", value)

1276

if_tag.appendChild(ann_tag)

1277

# Fix argument name for the Introspect method itself

1278

if (if_tag.getAttribute("name")

1279

== dbus.INTROSPECTABLE_IFACE):

1280

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

1281

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

1282

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

1283

if (arg.getAttribute("direction")

1284

== "out"):

1285

arg.setAttribute("name",

1286

"xml_data")

1287

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

1288

document.unlink()

1289

except (AttributeError, xml.dom.DOMException,

1290

xml.parsers.expat.ExpatError) as error:

1291

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

1292

exc_info=error)

1293

return xmlstring

1294

1295

1296

class DBusObjectWithProperties(DBusObjectWithAnnotations):

1297

"""A D-Bus object with properties.

1298

1299

Classes inheriting from this can use the dbus_service_property

1300

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

1301

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

1302

"""

1303

893

inspect.getmembers(cls,

894

self._is_dbus_thing(thing)))

895

1304

896

def _get_dbus_property(self, interface_name, property_name):

1305

897

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

1306

898

property with the specified name and interface.

1307

899

"""

1308

for cls in self.__class__.__mro__:

1309

for name, value in inspect.getmembers(

1310

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

900

for cls in self.__class__.__mro__:

901

for name, value in (inspect.getmembers

902

(cls,

903

self._is_dbus_thing("property"))):

1311

904

if (value._dbus_name == property_name

1312

905

and value._dbus_interface == interface_name):

1313

906

return value.__get__(self)

1314

907

1315

908

# No such property

1316

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

1317

self.dbus_object_path, interface_name, property_name))

1318

1319

@classmethod

1320

def _get_all_interface_names(cls):

1321

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

1322

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

1323

"_dbus_interface", None)

1324

for x in (inspect.getmro(cls))

1325

for attr in dir(x))

1326

if name is not None)

1327

1328

@dbus.service.method(dbus.PROPERTIES_IFACE,

1329

in_signature="ss",

909

raise DBusPropertyNotFound(self.dbus_object_path + ":"

910

+ interface_name + "."

911

+ property_name)

912

913

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

1330

914

out_signature="v")

1331

915

def Get(self, interface_name, property_name):

1332

916

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

1338

922

if not hasattr(value, "variant_level"):

1339

923

return value

1340

924

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

1341

925

1342

926

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

1343

927

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

1344

928

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

1351

935

# signatures other than "ay".

1352

936

if prop._dbus_signature != "ay":

1353

937

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

1354

"'ay' signature {!r}"

938

"'ay' signature {0!r}"

1355

939

.format(prop._dbus_signature))

1356

940

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

1357

941

for byte in value))

1358

942

prop(value)

1359

1360

@dbus.service.method(dbus.PROPERTIES_IFACE,

1361

in_signature="s",

943

944

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

1362

945

out_signature="a{sv}")

1363

946

def GetAll(self, interface_name):

1364

947

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

1365

948

standard.

1366

949

1367

950

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

1368

951

"""

1369

952

properties = {}

1379

962

if not hasattr(value, "variant_level"):

1380

963

properties[name] = value

1381

964

continue

1382

properties[name] = type(value)(

1383

value, variant_level=value.variant_level + 1)

965

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

966

value.variant_level+1)

1384

967

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

1385

1386

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

1387

def PropertiesChanged(self, interface_name, changed_properties,

1388

invalidated_properties):

1389

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

1390

standard.

1391

"""

1392

pass

1393

968

1394

969

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1395

970

out_signature="s",

1396

971

path_keyword='object_path',

1397

972

connection_keyword='connection')

1398

973

def Introspect(self, object_path, connection):

1399

974

"""Overloading of standard D-Bus method.

1400

975

1401

976

Inserts property tags and interface annotation tags.

1402

977

"""

1403

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1404

object_path,

1405

connection)

978

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

979

connection)

1406

980

try:

1407

981

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

1408

1409

982

def make_tag(document, name, prop):

1410

983

e = document.createElement("property")

1411

984

e.setAttribute("name", name)

1412

985

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

1413

986

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

1414

987

return e

1415

1416

988

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

1417

989

# Add property tags

1418

990

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

1421

993

if prop._dbus_interface

1422

994

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

1423

995

if_tag.appendChild(tag)

1424

# Add annotation tags for properties

1425

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

1426

annots = dict()

1427

for name, prop in self._get_all_dbus_things(

1428

"property"):

1429

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

1430

and prop._dbus_interface

1431

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

1432

annots.update(getattr(

1433

prop, "_dbus_annotations", {}))

1434

for name, value in annots.items():

1435

ann_tag = document.createElement(

1436

"annotation")

1437

ann_tag.setAttribute("name", name)

1438

ann_tag.setAttribute("value", value)

1439

tag.appendChild(ann_tag)

996

# Add annotation tags

997

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

998

for tag in if_tag.getElementsByTagName(typ):

999

annots = dict()

1000

for name, prop in (self.

1001

_get_all_dbus_things(typ)):

1002

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

1003

and prop._dbus_interface

1004

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

1005

annots.update(getattr

1006

(prop,

1007

"_dbus_annotations",

1008

{}))

1009

for name, value in annots.iteritems():

1010

ann_tag = document.createElement(

1011

"annotation")

1012

ann_tag.setAttribute("name", name)

1013

ann_tag.setAttribute("value", value)

1014

tag.appendChild(ann_tag)

1015

# Add interface annotation tags

1016

for annotation, value in dict(

1017

itertools.chain.from_iterable(

1018

annotations().iteritems()

1019

for name, annotations in

1020

self._get_all_dbus_things("interface")

1021

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

1022

)).iteritems():

1023

ann_tag = document.createElement("annotation")

1024

ann_tag.setAttribute("name", annotation)

1025

ann_tag.setAttribute("value", value)

1026

if_tag.appendChild(ann_tag)

1440

1027

# Add the names to the return values for the

1441

1028

# "org.freedesktop.DBus.Properties" methods

1442

1029

if (if_tag.getAttribute("name")

1460

1047

exc_info=error)

1461

1048

return xmlstring

1462

1049

1463

try:

1464

dbus.OBJECT_MANAGER_IFACE

1465

except AttributeError:

1466

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

1467

1468

1469

class DBusObjectWithObjectManager(DBusObjectWithAnnotations):

1470

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

1471

1472

Classes inheriting from this exposes the standard

1473

GetManagedObjects call and the InterfacesAdded and

1474

InterfacesRemoved signals on the standard

1475

"org.freedesktop.DBus.ObjectManager" interface.

1476

1477

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

1478

manually.

1479

"""

1480

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

1481

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

1482

def GetManagedObjects(self):

1483

"""This function must be overridden"""

1484

raise NotImplementedError()

1485

1486

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,

1487

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

1488

def InterfacesAdded(self, object_path, interfaces_and_properties):

1489

pass

1490

1491

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

1492

def InterfacesRemoved(self, object_path, interfaces):

1493

pass

1494

1495

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1496

out_signature="s",

1497

path_keyword='object_path',

1498

connection_keyword='connection')

1499

def Introspect(self, object_path, connection):

1500

"""Overloading of standard D-Bus method.

1501

1502

Override return argument name of GetManagedObjects to be

1503

"objpath_interfaces_and_properties"

1504

"""

1505

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1506

object_path,

1507

connection)

1508

try:

1509

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

1510

1511

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

1512

# Fix argument name for the GetManagedObjects method

1513

if (if_tag.getAttribute("name")

1514

== dbus.OBJECT_MANAGER_IFACE):

1515

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

1516

if (cn.getAttribute("name")

1517

== "GetManagedObjects"):

1518

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

1519

if (arg.getAttribute("direction")

1520

== "out"):

1521

arg.setAttribute(

1522

"name",

1523

"objpath_interfaces"

1524

"_and_properties")

1525

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

1526

document.unlink()

1527

except (AttributeError, xml.dom.DOMException,

1528

xml.parsers.expat.ExpatError) as error:

1529

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

1530

exc_info=error)

1531

return xmlstring

1532

1533

1050

1534

1051

def datetime_to_dbus(dt, variant_level=0):

1535

1052

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

1536

1053

if dt is None:

1537

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

1538

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

1054

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

1055

return dbus.String(dt.isoformat(),

1056

variant_level=variant_level)

1539

1057

1540

1058

1541

1059

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1543

1061

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

1544

1062

interface names according to the "alt_interface_names" mapping.

1545

1063

Usage:

1546

1064

1547

1065

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

1548

1066

"net.example.AlternateInterface"})

1549

1067

class SampleDBusObject(dbus.service.Object):

1550

1068

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

1551

1069

def SampleDBusMethod():

1552

1070

pass

1553

1071

1554

1072

The above "SampleDBusMethod" on "SampleDBusObject" will be

1555

1073

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

1556

1074

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

1557

1075

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

1558

1076

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

1559

1077

1560

1078

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

1561

1079

(from DBusObjectWithProperties) and interfaces (from the

1562

1080

dbus_interface_annotations decorator).

1563

1081

"""

1564

1565

1082

def wrapper(cls):

1566

1083

for orig_interface_name, alt_interface_name in (

1567

alt_interface_names.items()):

1084

alt_interface_names.iteritems()):

1568

1085

attr = {}

1569

1086

interface_names = set()

1570

1087

# Go though all attributes of the class

1572

1089

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

1573

1090

# with the wrong interface name

1574

1091

if (not hasattr(attribute, "_dbus_interface")

1575

or not attribute._dbus_interface.startswith(

1576

orig_interface_name)):

1092

or not attribute._dbus_interface

1093

.startswith(orig_interface_name)):

1577

1094

continue

1578

1095

# Create an alternate D-Bus interface name based on

1579

1096

# the current name

1580

alt_interface = attribute._dbus_interface.replace(

1581

orig_interface_name, alt_interface_name)

1097

alt_interface = (attribute._dbus_interface

1098

.replace(orig_interface_name,

1099

alt_interface_name))

1582

1100

interface_names.add(alt_interface)

1583

1101

# Is this a D-Bus signal?

1584

1102

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

1585

1103

# Extract the original non-method undecorated

1586

1104

# function by black magic

1587

if sys.version_info.major == 2:

1588

nonmethod_func = (dict(

1105

nonmethod_func = (dict(

1589

1106

zip(attribute.func_code.co_freevars,

1590

attribute.__closure__))

1591

["func"].cell_contents)

1592

else:

1593

nonmethod_func = (dict(

1594

zip(attribute.__code__.co_freevars,

1595

attribute.__closure__))

1596

["func"].cell_contents)

1107

attribute.__closure__))["func"]

1108

.cell_contents)

1597

1109

# Create a new, but exactly alike, function

1598

1110

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

1599

1111

# with the alternate D-Bus interface name

1600

new_function = copy_function(nonmethod_func)

1601

new_function = (dbus.service.signal(

1602

alt_interface,

1603

attribute._dbus_signature)(new_function))

1112

new_function = (dbus.service.signal

1113

(alt_interface,

1114

attribute._dbus_signature)

1115

(types.FunctionType(

1116

nonmethod_func.func_code,

1117

nonmethod_func.func_globals,

1118

nonmethod_func.func_name,

1119

nonmethod_func.func_defaults,

1120

nonmethod_func.func_closure)))

1604

1121

# Copy annotations, if any

1605

1122

try:

1606

new_function._dbus_annotations = dict(

1607

attribute._dbus_annotations)

1123

new_function._dbus_annotations = (

1124

dict(attribute._dbus_annotations))

1608

1125

except AttributeError:

1609

1126

pass

1610

1611

1127

# Define a creator of a function to call both the

1612

1128

# original and alternate functions, so both the

1613

1129

# original and alternate signals gets sent when

1616

1132

"""This function is a scope container to pass

1617

1133

func1 and func2 to the "call_both" function

1618

1134

outside of its arguments"""

1619

1620

@functools.wraps(func2)

1621

1135

def call_both(*args, **kwargs):

1622

1136

"""This function will emit two D-Bus

1623

1137

signals by calling func1 and func2"""

1624

1138

func1(*args, **kwargs)

1625

1139

func2(*args, **kwargs)

1626

# Make wrapper function look like a D-Bus

1627

# signal

1628

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

1629

if name.startswith("_dbus_"):

1630

setattr(call_both, name, attr)

1631

1632

1140

return call_both

1633

1141

# Create the "call_both" function and add it to

1634

1142

# the class

1639

1147

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

1640

1148

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

1641

1149

# to the class.

1642

attr[attrname] = (

1643

dbus.service.method(

1644

alt_interface,

1645

attribute._dbus_in_signature,

1646

attribute._dbus_out_signature)

1647

(copy_function(attribute)))

1150

attr[attrname] = (dbus.service.method

1151

(alt_interface,

1152

attribute._dbus_in_signature,

1153

attribute._dbus_out_signature)

1154

(types.FunctionType

1155

(attribute.func_code,

1156

attribute.func_globals,

1157

attribute.func_name,

1158

attribute.func_defaults,

1159

attribute.func_closure)))

1648

1160

# Copy annotations, if any

1649

1161

try:

1650

attr[attrname]._dbus_annotations = dict(

1651

attribute._dbus_annotations)

1162

attr[attrname]._dbus_annotations = (

1163

dict(attribute._dbus_annotations))

1652

1164

except AttributeError:

1653

1165

pass

1654

1166

# Is this a D-Bus property?

1657

1169

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

1658

1170

# property with the alternate D-Bus interface

1659

1171

# name. Add it to the class.

1660

attr[attrname] = (dbus_service_property(

1661

alt_interface, attribute._dbus_signature,

1662

attribute._dbus_access,

1663

attribute._dbus_get_args_options

1664

["byte_arrays"])

1665

(copy_function(attribute)))

1172

attr[attrname] = (dbus_service_property

1173

(alt_interface,

1174

attribute._dbus_signature,

1175

attribute._dbus_access,

1176

attribute

1177

._dbus_get_args_options

1178

["byte_arrays"])

1179

(types.FunctionType

1180

(attribute.func_code,

1181

attribute.func_globals,

1182

attribute.func_name,

1183

attribute.func_defaults,

1184

attribute.func_closure)))

1666

1185

# Copy annotations, if any

1667

1186

try:

1668

attr[attrname]._dbus_annotations = dict(

1669

attribute._dbus_annotations)

1187

attr[attrname]._dbus_annotations = (

1188

dict(attribute._dbus_annotations))

1670

1189

except AttributeError:

1671

1190

pass

1672

1191

# Is this a D-Bus interface?

1675

1194

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

1676

1195

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

1677

1196

# to the class.

1678

attr[attrname] = (

1679

dbus_interface_annotations(alt_interface)

1680

(copy_function(attribute)))

1197

attr[attrname] = (dbus_interface_annotations

1198

(alt_interface)

1199

(types.FunctionType

1200

(attribute.func_code,

1201

attribute.func_globals,

1202

attribute.func_name,

1203

attribute.func_defaults,

1204

attribute.func_closure)))

1681

1205

if deprecate:

1682

1206

# Deprecate all alternate interfaces

1683

iname = "_AlternateDBusNames_interface_annotation{}"

1207

iname="_AlternateDBusNames_interface_annotation{0}"

1684

1208

for interface_name in interface_names:

1685

1686

1209

@dbus_interface_annotations(interface_name)

1687

1210

def func(self):

1688

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

1689

"true"}

1211

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

1212

"true" }

1690

1213

# Find an unused name

1691

1214

for aname in (iname.format(i)

1692

1215

for i in itertools.count()):

1696

1219

if interface_names:

1697

1220

# Replace the class with a new subclass of it with

1698

1221

# methods, signals, etc. as created above.

1699

if sys.version_info.major == 2:

1700

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

1701

(cls, ), attr)

1702

else:

1703

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

1704

(cls, ), attr)

1222

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

1223

(cls,), attr)

1705

1224

return cls

1706

1707

1225

return wrapper

1708

1226

1709

1227

1710

1228

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

1711

"se.bsnet.fukt.Mandos"})

1229

"se.bsnet.fukt.Mandos"})

1712

1230

class ClientDBus(Client, DBusObjectWithProperties):

1713

1231

"""A Client class using D-Bus

1714

1232

1715

1233

Attributes:

1716

1234

dbus_object_path: dbus.ObjectPath

1717

1235

bus: dbus.SystemBus()

1718

1236

"""

1719

1237

1720

1238

runtime_expansions = (Client.runtime_expansions

1721

+ ("dbus_object_path", ))

1722

1723

_interface = "se.recompile.Mandos.Client"

1724

1239

+ ("dbus_object_path",))

1240

1725

1241

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

1726

1727

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

1242

1243

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

1728

1244

self.bus = bus

1729

1245

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

1730

1246

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

1731

1247

# the D-Bus

1732

client_object_name = str(self.name).translate(

1248

client_object_name = unicode(self.name).translate(

1733

1249

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

1734

1250

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

1735

self.dbus_object_path = dbus.ObjectPath(

1736

"/clients/" + client_object_name)

1251

self.dbus_object_path = (dbus.ObjectPath

1252

("/clients/" + client_object_name))

1737

1253

DBusObjectWithProperties.__init__(self, self.bus,

1738

1254

self.dbus_object_path)

1739

1740

def notifychangeproperty(transform_func, dbus_name,

1741

type_func=lambda x: x,

1742

variant_level=1,

1743

invalidate_only=False,

1744

_interface=_interface):

1255

1256

def notifychangeproperty(transform_func,

1257

dbus_name, type_func=lambda x: x,

1258

variant_level=1):

1745

1259

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

1746

1260

its changes to DBus.

1747

1261

1748

1262

transform_fun: Function that takes a value and a variant_level

1749

1263

and transforms it to a D-Bus type.

1750

1264

dbus_name: D-Bus name of the variable

1752

1266

to the D-Bus. Default: no transform

1753

1267

variant_level: D-Bus variant level. Default: 1

1754

1268

"""

1755

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

1756

1269

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

1757

1270

def setter(self, value):

1758

1271

if hasattr(self, "dbus_object_path"):

1759

1272

if (not hasattr(self, attrname) or

1760

1273

type_func(getattr(self, attrname, None))

1761

1274

!= type_func(value)):

1762

if invalidate_only:

1763

self.PropertiesChanged(

1764

_interface, dbus.Dictionary(),

1765

dbus.Array((dbus_name, )))

1766

else:

1767

dbus_value = transform_func(

1768

type_func(value),

1769

variant_level=variant_level)

1770

self.PropertyChanged(dbus.String(dbus_name),

1771

dbus_value)

1772

self.PropertiesChanged(

1773

_interface,

1774

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

1775

dbus_value}),

1776

dbus.Array())

1275

dbus_value = transform_func(type_func(value),

1276

variant_level

1277

=variant_level)

1278

self.PropertyChanged(dbus.String(dbus_name),

1279

dbus_value)

1777

1280

setattr(self, attrname, value)

1778

1281

1779

1282

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

1780

1283

1781

1284

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1782

1285

approvals_pending = notifychangeproperty(dbus.Boolean,

1783

1286

"ApprovalPending",

1784

type_func=bool)

1287

type_func = bool)

1785

1288

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

1786

1289

last_enabled = notifychangeproperty(datetime_to_dbus,

1787

1290

"LastEnabled")

1788

checker = notifychangeproperty(

1789

dbus.Boolean, "CheckerRunning",

1790

type_func=lambda checker: checker is not None)

1291

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

1292

type_func = lambda checker:

1293

checker is not None)

1791

1294

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1792

1295

"LastCheckedOK")

1793

1296

last_checker_status = notifychangeproperty(dbus.Int16,

1796

1299

datetime_to_dbus, "LastApprovalRequest")

1797

1300

approved_by_default = notifychangeproperty(dbus.Boolean,

1798

1301

"ApprovedByDefault")

1799

approval_delay = notifychangeproperty(

1800

dbus.UInt64, "ApprovalDelay",

1801

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

1302

approval_delay = notifychangeproperty(dbus.UInt64,

1303

"ApprovalDelay",

1304

type_func =

1305

timedelta_to_milliseconds)

1802

1306

approval_duration = notifychangeproperty(

1803

1307

dbus.UInt64, "ApprovalDuration",

1804

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

1308

type_func = timedelta_to_milliseconds)

1805

1309

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

1806

timeout = notifychangeproperty(

1807

dbus.UInt64, "Timeout",

1808

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

1310

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

1311

type_func =

1312

timedelta_to_milliseconds)

1809

1313

extended_timeout = notifychangeproperty(

1810

1314

dbus.UInt64, "ExtendedTimeout",

1811

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

1812

interval = notifychangeproperty(

1813

dbus.UInt64, "Interval",

1814

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

1315

type_func = timedelta_to_milliseconds)

1316

interval = notifychangeproperty(dbus.UInt64,

1317

"Interval",

1318

type_func =

1319

timedelta_to_milliseconds)

1815

1320

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

1816

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

1817

invalidate_only=True)

1818

1321

1819

1322

del notifychangeproperty

1820

1323

1821

1324

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

1822

1325

try:

1823

1326

self.remove_from_connection()

1826

1329

if hasattr(DBusObjectWithProperties, "__del__"):

1827

1330

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

1828

1331

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

1829

1830

def checker_callback(self, source, condition,

1831

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

1832

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

1833

connection, command, *args,

1834

**kwargs)

1835

exitstatus = self.last_checker_status

1836

if exitstatus >= 0:

1332

1333

def checker_callback(self, pid, condition, command,

1334

*args, **kwargs):

1335

self.checker_callback_tag = None

1336

self.checker = None

1337

if os.WIFEXITED(condition):

1338

exitstatus = os.WEXITSTATUS(condition)

1837

1339

# Emit D-Bus signal

1838

1340

self.CheckerCompleted(dbus.Int16(exitstatus),

1839

# This is specific to GNU libC

1840

dbus.Int64(exitstatus << 8),

1341

dbus.Int64(condition),

1841

1342

dbus.String(command))

1842

1343

else:

1843

1344

# Emit D-Bus signal

1844

1345

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

1845

dbus.Int64(

1846

# This is specific to GNU libC

1847

(exitstatus << 8)

1848

| self.last_checker_signal),

1346

dbus.Int64(condition),

1849

1347

dbus.String(command))

1850

return ret

1851

1348

1349

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

1350

*args, **kwargs)

1351

1852

1352

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

1853

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

1353

old_checker = self.checker

1354

if self.checker is not None:

1355

old_checker_pid = self.checker.pid

1356

else:

1357

old_checker_pid = None

1854

1358

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

1855

1359

# Only if new checker process was started

1856

1360

if (self.checker is not None

1858

1362

# Emit D-Bus signal

1859

1363

self.CheckerStarted(self.current_checker_command)

1860

1364

return r

1861

1365

1862

1366

def _reset_approved(self):

1863

1367

self.approved = None

1864

1368

return False

1865

1369

1866

1370

def approve(self, value=True):

1867

1371

self.approved = value

1868

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

1869

* 1000), self._reset_approved)

1372

gobject.timeout_add(timedelta_to_milliseconds

1373

(self.approval_duration),

1374

self._reset_approved)

1870

1375

self.send_changedstate()

1871

1872

# D-Bus methods, signals & properties

1873

1874

# Interfaces

1875

1876

# Signals

1877

1376

1377

## D-Bus methods, signals & properties

1378

_interface = "se.recompile.Mandos.Client"

1379

1380

## Interfaces

1381

1382

@dbus_interface_annotations(_interface)

1383

def _foo(self):

1384

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

1385

"false"}

1386

1387

## Signals

1388

1878

1389

# CheckerCompleted - signal

1879

1390

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

1880

1391

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

1881

1392

"D-Bus signal"

1882

1393

pass

1883

1394

1884

1395

# CheckerStarted - signal

1885

1396

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

1886

1397

def CheckerStarted(self, command):

1887

1398

"D-Bus signal"

1888

1399

pass

1889

1400

1890

1401

# PropertyChanged - signal

1891

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

1892

1402

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

1893

1403

def PropertyChanged(self, property, value):

1894

1404

"D-Bus signal"

1895

1405

pass

1896

1406

1897

1407

# GotSecret - signal

1898

1408

@dbus.service.signal(_interface)

1899

1409

def GotSecret(self):

1902

1412

server to mandos-client

1903

1413

"""

1904

1414

pass

1905

1415

1906

1416

# Rejected - signal

1907

1417

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

1908

1418

def Rejected(self, reason):

1909

1419

"D-Bus signal"

1910

1420

pass

1911

1421

1912

1422

# NeedApproval - signal

1913

1423

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

1914

1424

def NeedApproval(self, timeout, default):

1915

1425

"D-Bus signal"

1916

1426

return self.need_approval()

1917

1918

# Methods

1919

1427

1428

## Methods

1429

1920

1430

# Approve - method

1921

1431

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

1922

1432

def Approve(self, value):

1923

1433

self.approve(value)

1924

1434

1925

1435

# CheckedOK - method

1926

1436

@dbus.service.method(_interface)

1927

1437

def CheckedOK(self):

1928

1438

self.checked_ok()

1929

1439

1930

1440

# Enable - method

1931

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

1932

1441

@dbus.service.method(_interface)

1933

1442

def Enable(self):

1934

1443

"D-Bus method"

1935

1444

self.enable()

1936

1445

1937

1446

# StartChecker - method

1938

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

1939

1447

@dbus.service.method(_interface)

1940

1448

def StartChecker(self):

1941

1449

"D-Bus method"

1942

1450

self.start_checker()

1943

1451

1944

1452

# Disable - method

1945

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

1946

1453

@dbus.service.method(_interface)

1947

1454

def Disable(self):

1948

1455

"D-Bus method"

1949

1456

self.disable()

1950

1457

1951

1458

# StopChecker - method

1952

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

1953

1459

@dbus.service.method(_interface)

1954

1460

def StopChecker(self):

1955

1461

self.stop_checker()

1956

1957

# Properties

1958

1462

1463

## Properties

1464

1959

1465

# ApprovalPending - property

1960

1466

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

1961

1467

def ApprovalPending_dbus_property(self):

1962

1468

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

1963

1469

1964

1470

# ApprovedByDefault - property

1965

@dbus_service_property(_interface,

1966

signature="b",

1471

@dbus_service_property(_interface, signature="b",

1967

1472

access="readwrite")

1968

1473

def ApprovedByDefault_dbus_property(self, value=None):

1969

1474

if value is None: # get

1970

1475

return dbus.Boolean(self.approved_by_default)

1971

1476

self.approved_by_default = bool(value)

1972

1477

1973

1478

# ApprovalDelay - property

1974

@dbus_service_property(_interface,

1975

signature="t",

1479

@dbus_service_property(_interface, signature="t",

1976

1480

access="readwrite")

1977

1481

def ApprovalDelay_dbus_property(self, value=None):

1978

1482

if value is None: # get

1979

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

1980

* 1000)

1483

return dbus.UInt64(self.approval_delay_milliseconds())

1981

1484

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

1982

1485

1983

1486

# ApprovalDuration - property

1984

@dbus_service_property(_interface,

1985

signature="t",

1487

@dbus_service_property(_interface, signature="t",

1986

1488

access="readwrite")

1987

1489

def ApprovalDuration_dbus_property(self, value=None):

1988

1490

if value is None: # get

1989

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

1990

* 1000)

1491

return dbus.UInt64(timedelta_to_milliseconds(

1492

self.approval_duration))

1991

1493

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

1992

1494

1993

1495

# Name - property

1994

@dbus_annotations(

1995

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

1996

1496

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

1997

1497

def Name_dbus_property(self):

1998

1498

return dbus.String(self.name)

1999

1499

2000

1500

# Fingerprint - property

2001

@dbus_annotations(

2002

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

2003

1501

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

2004

1502

def Fingerprint_dbus_property(self):

2005

1503

return dbus.String(self.fingerprint)

2006

1504

2007

1505

# Host - property

2008

@dbus_service_property(_interface,

2009

signature="s",

1506

@dbus_service_property(_interface, signature="s",

2010

1507

access="readwrite")

2011

1508

def Host_dbus_property(self, value=None):

2012

1509

if value is None: # get

2013

1510

return dbus.String(self.host)

2014

self.host = str(value)

2015

1511

self.host = unicode(value)

1512

2016

1513

# Created - property

2017

@dbus_annotations(

2018

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

2019

1514

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

2020

1515

def Created_dbus_property(self):

2021

1516

return datetime_to_dbus(self.created)

2022

1517

2023

1518

# LastEnabled - property

2024

1519

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

2025

1520

def LastEnabled_dbus_property(self):

2026

1521

return datetime_to_dbus(self.last_enabled)

2027

1522

2028

1523

# Enabled - property

2029

@dbus_service_property(_interface,

2030

signature="b",

1524

@dbus_service_property(_interface, signature="b",

2031

1525

access="readwrite")

2032

1526

def Enabled_dbus_property(self, value=None):

2033

1527

if value is None: # get

2036

1530

self.enable()

2037

1531

else:

2038

1532

self.disable()

2039

1533

2040

1534

# LastCheckedOK - property

2041

@dbus_service_property(_interface,

2042

signature="s",

1535

@dbus_service_property(_interface, signature="s",

2043

1536

access="readwrite")

2044

1537

def LastCheckedOK_dbus_property(self, value=None):

2045

1538

if value is not None:

2046

1539

self.checked_ok()

2047

1540

return

2048

1541

return datetime_to_dbus(self.last_checked_ok)

2049

1542

2050

1543

# LastCheckerStatus - property

2051

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

1544

@dbus_service_property(_interface, signature="n",

1545

access="read")

2052

1546

def LastCheckerStatus_dbus_property(self):

2053

1547

return dbus.Int16(self.last_checker_status)

2054

1548

2055

1549

# Expires - property

2056

1550

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

2057

1551

def Expires_dbus_property(self):

2058

1552

return datetime_to_dbus(self.expires)

2059

1553

2060

1554

# LastApprovalRequest - property

2061

1555

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

2062

1556

def LastApprovalRequest_dbus_property(self):

2063

1557

return datetime_to_dbus(self.last_approval_request)

2064

1558

2065

1559

# Timeout - property

2066

@dbus_service_property(_interface,

2067

signature="t",

1560

@dbus_service_property(_interface, signature="t",

2068

1561

access="readwrite")

2069

1562

def Timeout_dbus_property(self, value=None):

2070

1563

if value is None: # get

2071

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

1564

return dbus.UInt64(self.timeout_milliseconds())

2072

1565

old_timeout = self.timeout

2073

1566

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

2074

1567

# Reschedule disabling

2082

1575

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

2083

1576

is None):

2084

1577

return

2085

GLib.source_remove(self.disable_initiator_tag)

2086

self.disable_initiator_tag = GLib.timeout_add(

2087

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

2088

self.disable)

2089

1578

gobject.source_remove(self.disable_initiator_tag)

1579

self.disable_initiator_tag = (

1580

gobject.timeout_add(

1581

timedelta_to_milliseconds(self.expires - now),

1582

self.disable))

1583

2090

1584

# ExtendedTimeout - property

2091

@dbus_service_property(_interface,

2092

signature="t",

1585

@dbus_service_property(_interface, signature="t",

2093

1586

access="readwrite")

2094

1587

def ExtendedTimeout_dbus_property(self, value=None):

2095

1588

if value is None: # get

2096

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

2097

* 1000)

1589

return dbus.UInt64(self.extended_timeout_milliseconds())

2098

1590

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

2099

1591

2100

1592

# Interval - property

2101

@dbus_service_property(_interface,

2102

signature="t",

1593

@dbus_service_property(_interface, signature="t",

2103

1594

access="readwrite")

2104

1595

def Interval_dbus_property(self, value=None):

2105

1596

if value is None: # get

2106

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

1597

return dbus.UInt64(self.interval_milliseconds())

2107

1598

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

2108

1599

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

2109

1600

return

2110

1601

if self.enabled:

2111

1602

# Reschedule checker run

2112

GLib.source_remove(self.checker_initiator_tag)

2113

self.checker_initiator_tag = GLib.timeout_add(

2114

value, self.start_checker)

2115

self.start_checker() # Start one now, too

2116

1603

gobject.source_remove(self.checker_initiator_tag)

1604

self.checker_initiator_tag = (gobject.timeout_add

1605

(value, self.start_checker))

1606

self.start_checker() # Start one now, too

1607

2117

1608

# Checker - property

2118

@dbus_service_property(_interface,

2119

signature="s",

1609

@dbus_service_property(_interface, signature="s",

2120

1610

access="readwrite")

2121

1611

def Checker_dbus_property(self, value=None):

2122

1612

if value is None: # get

2123

1613

return dbus.String(self.checker_command)

2124

self.checker_command = str(value)

2125

1614

self.checker_command = unicode(value)

1615

2126

1616

# CheckerRunning - property

2127

@dbus_service_property(_interface,

2128

signature="b",

1617

@dbus_service_property(_interface, signature="b",

2129

1618

access="readwrite")

2130

1619

def CheckerRunning_dbus_property(self, value=None):

2131

1620

if value is None: # get

2134

1623

self.start_checker()

2135

1624

else:

2136

1625

self.stop_checker()

2137

1626

2138

1627

# ObjectPath - property

2139

@dbus_annotations(

2140

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

2141

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

2142

1628

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

2143

1629

def ObjectPath_dbus_property(self):

2144

return self.dbus_object_path # is already a dbus.ObjectPath

2145

1630

return self.dbus_object_path # is already a dbus.ObjectPath

1631

2146

1632

# Secret = property

2147

@dbus_annotations(

2148

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

2149

"invalidates"})

2150

@dbus_service_property(_interface,

2151

signature="ay",

2152

access="write",

2153

byte_arrays=True)

1633

@dbus_service_property(_interface, signature="ay",

1634

access="write", byte_arrays=True)

2154

1635

def Secret_dbus_property(self, value):

2155

self.secret = bytes(value)

2156

1636

self.secret = str(value)

1637

2157

1638

del _interface

2158

1639

2159

1640

2162

1643

self._pipe = child_pipe

2163

1644

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

2164

1645

if not self._pipe.recv():

2165

raise KeyError(fpr)

2166

1646

raise KeyError()

1647

2167

1648

def __getattribute__(self, name):

2168

1649

if name == '_pipe':

2169

1650

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

2172

1653

if data[0] == 'data':

2173

1654

return data[1]

2174

1655

if data[0] == 'function':

2175

2176

1656

def func(*args, **kwargs):

2177

1657

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

2178

1658

return self._pipe.recv()[1]

2179

2180

1659

return func

2181

1660

2182

1661

def __setattr__(self, name, value):

2183

1662

if name == '_pipe':

2184

1663

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

2187

1666

2188

1667

class ClientHandler(socketserver.BaseRequestHandler, object):

2189

1668

"""A class to handle client connections.

2190

1669

2191

1670

Instantiated once for each connection to handle it.

2192

1671

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

2193

1672

2194

1673

def handle(self):

2195

1674

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

2196

1675

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

2197

str(self.client_address))

1676

unicode(self.client_address))

2198

1677

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

2199

1678

self.server.child_pipe.fileno())

2200

2201

session = gnutls.ClientSession(self.request)

2202

2203

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

2204

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

2205

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

2206

# "+DHE-DSS"))

1679

1680

session = (gnutls.connection

1681

.ClientSession(self.request,

1682

gnutls.connection

1683

.X509Credentials()))

1684

1685

# Note: gnutls.connection.X509Credentials is really a

1686

# generic GnuTLS certificate credentials object so long as

1687

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

1688

# here despite using OpenPGP certificates.

1689

1690

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

1691

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

1692

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

1693

# "+DHE-DSS"))

2207

1694

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

2208

1695

priority = self.server.gnutls_priority

2209

1696

if priority is None:

2210

1697

priority = "NORMAL"

2211

gnutls.priority_set_direct(session._c_object,

2212

priority.encode("utf-8"),

2213

None)

2214

1698

(gnutls.library.functions

1699

.gnutls_priority_set_direct(session._c_object,

1700

priority, None))

1701

2215

1702

# Start communication using the Mandos protocol

2216

1703

# Get protocol number

2217

1704

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

2222

1709

except (ValueError, IndexError, RuntimeError) as error:

2223

1710

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

2224

1711

return

2225

1712

2226

1713

# Start GnuTLS connection

2227

1714

try:

2228

1715

session.handshake()

2229

except gnutls.Error as error:

1716

except gnutls.errors.GNUTLSError as error:

2230

1717

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

2231

1718

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

2232

1719

# established. Just abandon the request.

2233

1720

return

2234

1721

logger.debug("Handshake succeeded")

2235

1722

2236

1723

approval_required = False

2237

1724

try:

2238

1725

try:

2239

fpr = self.fingerprint(

2240

self.peer_certificate(session))

2241

except (TypeError, gnutls.Error) as error:

1726

fpr = self.fingerprint(self.peer_certificate

1727

(session))

1728

except (TypeError,

1729

gnutls.errors.GNUTLSError) as error:

2242

1730

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

2243

1731

return

2244

1732

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

2245

1733

2246

1734

try:

2247

1735

client = ProxyClient(child_pipe, fpr,

2248

1736

self.client_address)

2249

1737

except KeyError:

2250

1738

return

2251

1739

2252

1740

if client.approval_delay:

2253

1741

delay = client.approval_delay

2254

1742

client.approvals_pending += 1

2255

1743

approval_required = True

2256

1744

2257

1745

while True:

2258

1746

if not client.enabled:

2259

1747

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

2260

client.name)

1748

client.name)

2261

1749

if self.server.use_dbus:

2262

1750

# Emit D-Bus signal

2263

1751

client.Rejected("Disabled")

2264

1752

return

2265

1753

2266

1754

if client.approved or not client.approval_delay:

2267

# We are approved or approval is disabled

1755

#We are approved or approval is disabled

2268

1756

break

2269

1757

elif client.approved is None:

2270

1758

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

2272

1760

if self.server.use_dbus:

2273

1761

# Emit D-Bus signal

2274

1762

client.NeedApproval(

2275

client.approval_delay.total_seconds()

2276

* 1000, client.approved_by_default)

1763

client.approval_delay_milliseconds(),

1764

client.approved_by_default)

2277

1765

else:

2278

1766

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

2279

1767

client.name)

2281

1769

# Emit D-Bus signal

2282

1770

client.Rejected("Denied")

2283

1771

return

2284

2285

# wait until timeout or approved

1772

1773

#wait until timeout or approved

2286

1774

time = datetime.datetime.now()

2287

1775

client.changedstate.acquire()

2288

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

1776

client.changedstate.wait(

1777

float(timedelta_to_milliseconds(delay)

1778

/ 1000))

2289

1779

client.changedstate.release()

2290

1780

time2 = datetime.datetime.now()

2291

1781

if (time2 - time) >= delay:

2301

1791

break

2302

1792

else:

2303

1793

delay -= time2 - time

2304

2305

try:

2306

session.send(client.secret)

2307

except gnutls.Error as error:

2308

logger.warning("gnutls send failed",

2309

exc_info=error)

2310

return

2311

1794

1795

sent_size = 0

1796

while sent_size < len(client.secret):

1797

try:

1798

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

1799

except gnutls.errors.GNUTLSError as error:

1800

logger.warning("gnutls send failed",

1801

exc_info=error)

1802

return

1803

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

1804

sent, len(client.secret)

1805

- (sent_size + sent))

1806

sent_size += sent

1807

2312

1808

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

2313

1809

# bump the timeout using extended_timeout

2314

1810

client.bump_timeout(client.extended_timeout)

2315

1811

if self.server.use_dbus:

2316

1812

# Emit D-Bus signal

2317

1813

client.GotSecret()

2318

1814

2319

1815

finally:

2320

1816

if approval_required:

2321

1817

client.approvals_pending -= 1

2322

1818

try:

2323

1819

session.bye()

2324

except gnutls.Error as error:

1820

except gnutls.errors.GNUTLSError as error:

2325

1821

logger.warning("GnuTLS bye failed",

2326

1822

exc_info=error)

2327

1823

2328

1824

@staticmethod

2329

1825

def peer_certificate(session):

2330

1826

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

2331

1827

# If not an OpenPGP certificate...

2332

if (gnutls.certificate_type_get(session._c_object)

2333

!= gnutls.CRT_OPENPGP):

2334

# ...return invalid data

2335

return b""

1828

if (gnutls.library.functions

1829

.gnutls_certificate_type_get(session._c_object)

1830

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1831

# ...do the normal thing

1832

return session.peer_certificate

2336

1833

list_size = ctypes.c_uint(1)

2337

cert_list = (gnutls.certificate_get_peers

1834

cert_list = (gnutls.library.functions

1835

.gnutls_certificate_get_peers

2338

1836

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

2339

1837

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

2340

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

1838

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

1839

" certificate")

2341

1840

if list_size.value == 0:

2342

1841

return None

2343

1842

cert = cert_list[0]

2344

1843

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

2345

1844

2346

1845

@staticmethod

2347

1846

def fingerprint(openpgp):

2348

1847

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

2349

1848

# New GnuTLS "datum" with the OpenPGP public key

2350

datum = gnutls.datum_t(

2351

ctypes.cast(ctypes.c_char_p(openpgp),

2352

ctypes.POINTER(ctypes.c_ubyte)),

2353

ctypes.c_uint(len(openpgp)))

1849

datum = (gnutls.library.types

1850

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

1851

ctypes.POINTER

1852

(ctypes.c_ubyte)),

1853

ctypes.c_uint(len(openpgp))))

2354

1854

# New empty GnuTLS certificate

2355

crt = gnutls.openpgp_crt_t()

2356

gnutls.openpgp_crt_init(ctypes.byref(crt))

1855

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1856

(gnutls.library.functions

1857

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

2357

1858

# Import the OpenPGP public key into the certificate

2358

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

2359

gnutls.OPENPGP_FMT_RAW)

1859

(gnutls.library.functions

1860

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

1861

gnutls.library.constants

1862

.GNUTLS_OPENPGP_FMT_RAW))

2360

1863

# Verify the self signature in the key

2361

1864

crtverify = ctypes.c_uint()

2362

gnutls.openpgp_crt_verify_self(crt, 0,

2363

ctypes.byref(crtverify))

1865

(gnutls.library.functions

1866

.gnutls_openpgp_crt_verify_self(crt, 0,

1867

ctypes.byref(crtverify)))

2364

1868

if crtverify.value != 0:

2365

gnutls.openpgp_crt_deinit(crt)

2366

raise gnutls.CertificateSecurityError("Verify failed")

1869

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1870

raise (gnutls.errors.CertificateSecurityError

1871

("Verify failed"))

2367

1872

# New buffer for the fingerprint

2368

1873

buf = ctypes.create_string_buffer(20)

2369

1874

buf_len = ctypes.c_size_t()

2370

1875

# Get the fingerprint from the certificate into the buffer

2371

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

2372

ctypes.byref(buf_len))

1876

(gnutls.library.functions

1877

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

1878

ctypes.byref(buf_len)))

2373

1879

# Deinit the certificate

2374

gnutls.openpgp_crt_deinit(crt)

1880

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

2375

1881

# Convert the buffer to a Python bytestring

2376

1882

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

2377

1883

# Convert the bytestring to hexadecimal notation

2381

1887

2382

1888

class MultiprocessingMixIn(object):

2383

1889

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

2384

2385

1890

def sub_process_main(self, request, address):

2386

1891

try:

2387

1892

self.finish_request(request, address)

2388

1893

except Exception:

2389

1894

self.handle_error(request, address)

2390

1895

self.close_request(request)

2391

1896

2392

1897

def process_request(self, request, address):

2393

1898

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

2394

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

2395

args=(request, address))

1899

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

1900

args = (request, address))

2396

1901

proc.start()

2397

1902

return proc

2398

1903

2399

1904

2400

1905

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

2401

1906

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

2402

2403

1907

def process_request(self, request, client_address):

2404

1908

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

2405

1909

2406

1910

This function creates a new pipe in self.pipe

2407

1911

"""

2408

1912

parent_pipe, self.child_pipe = multiprocessing.Pipe()

2409

1913

2410

1914

proc = MultiprocessingMixIn.process_request(self, request,

2411

1915

client_address)

2412

1916

self.child_pipe.close()

2413

1917

self.add_pipe(parent_pipe, proc)

2414

1918

2415

1919

def add_pipe(self, parent_pipe, proc):

2416

1920

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

2417

1921

raise NotImplementedError()

2420

1924

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

2421

1925

socketserver.TCPServer, object):

2422

1926

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

2423

1927

2424

1928

Attributes:

2425

1929

enabled: Boolean; whether this server is activated yet

2426

1930

interface: None or a network interface name (string)

2427

1931

use_ipv6: Boolean; to use IPv6 or not

2428

1932

"""

2429

2430

1933

def __init__(self, server_address, RequestHandlerClass,

2431

interface=None,

2432

use_ipv6=True,

2433

socketfd=None):

1934

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

2434

1935

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

2435

1936

creating a new one with socket.socket().

2436

1937

"""

2442

1943

self.socketfd = socketfd

2443

1944

# Save the original socket.socket() function

2444

1945

self.socket_socket = socket.socket

2445

2446

1946

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

2447

#

1947

#

2448

1948

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

2449

1949

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

2450

1950

# patching socket.socket.)

2451

#

1951

#

2452

1952

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

2453

1953

@functools.wraps(socket.socket)

2454

1954

def socket_wrapper(*args, **kwargs):

2466

1966

# socket_wrapper(), if socketfd was set.

2467

1967

socketserver.TCPServer.__init__(self, server_address,

2468

1968

RequestHandlerClass)

2469

1969

2470

1970

def server_bind(self):

2471

1971

"""This overrides the normal server_bind() function

2472

1972

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

2473

1973

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

2474

global SO_BINDTODEVICE

2475

1974

if self.interface is not None:

2476

1975

if SO_BINDTODEVICE is None:

2477

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

2478

# common enough.

2479

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

2480

SO_BINDTODEVICE = 25

2481

try:

2482

self.socket.setsockopt(

2483

socket.SOL_SOCKET, SO_BINDTODEVICE,

2484

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

2485

except socket.error as error:

2486

if error.errno == errno.EPERM:

2487

logger.error("No permission to bind to"

2488

" interface %s", self.interface)

2489

elif error.errno == errno.ENOPROTOOPT:

2490

logger.error("SO_BINDTODEVICE not available;"

2491

" cannot bind to interface %s",

2492

self.interface)

2493

elif error.errno == errno.ENODEV:

2494

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

2495

" cannot bind", self.interface)

2496

else:

2497

raise

1976

logger.error("SO_BINDTODEVICE does not exist;"

1977

" cannot bind to interface %s",

1978

self.interface)

1979

else:

1980

try:

1981

self.socket.setsockopt(socket.SOL_SOCKET,

1982

SO_BINDTODEVICE,

1983

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

1984

except socket.error as error:

1985

if error.errno == errno.EPERM:

1986

logger.error("No permission to bind to"

1987

" interface %s", self.interface)

1988

elif error.errno == errno.ENOPROTOOPT:

1989

logger.error("SO_BINDTODEVICE not available;"

1990

" cannot bind to interface %s",

1991

self.interface)

1992

elif error.errno == errno.ENODEV:

1993

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

1994

" cannot bind", self.interface)

1995

else:

1996

raise

2498

1997

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

2499

1998

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

2500

1999

if not self.server_address[0]:

2501

2000

if self.address_family == socket.AF_INET6:

2502

any_address = "::" # in6addr_any

2001

any_address = "::" # in6addr_any

2503

2002

else:

2504

any_address = "0.0.0.0" # INADDR_ANY

2003

any_address = "0.0.0.0" # INADDR_ANY

2505

2004

self.server_address = (any_address,

2506

2005

self.server_address[1])

2507

2006

elif not self.server_address[1]:

2508

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

2007

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

2008

0)

2509

2009

# if self.interface:

2510

2010

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

2511

2011

# 0, # port

2517

2017

2518

2018

class MandosServer(IPv6_TCPServer):

2519

2019

"""Mandos server.

2520

2020

2521

2021

Attributes:

2522

2022

clients: set of Client objects

2523

2023

gnutls_priority GnuTLS priority string

2524

2024

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

2525

2526

Assumes a GLib.MainLoop event loop.

2025

2026

Assumes a gobject.MainLoop event loop.

2527

2027

"""

2528

2529

2028

def __init__(self, server_address, RequestHandlerClass,

2530

interface=None,

2531

use_ipv6=True,

2532

clients=None,

2533

gnutls_priority=None,

2534

use_dbus=True,

2535

socketfd=None):

2029

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

2030

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

2536

2031

self.enabled = False

2537

2032

self.clients = clients

2538

2033

if self.clients is None:

2541

2036

self.gnutls_priority = gnutls_priority

2542

2037

IPv6_TCPServer.__init__(self, server_address,

2543

2038

RequestHandlerClass,

2544

interface=interface,

2545

use_ipv6=use_ipv6,

2546

socketfd=socketfd)

2547

2039

interface = interface,

2040

use_ipv6 = use_ipv6,

2041

socketfd = socketfd)

2548

2042

def server_activate(self):

2549

2043

if self.enabled:

2550

2044

return socketserver.TCPServer.server_activate(self)

2551

2045

2552

2046

def enable(self):

2553

2047

self.enabled = True

2554

2048

2555

2049

def add_pipe(self, parent_pipe, proc):

2556

2050

# Call "handle_ipc" for both data and EOF events

2557

GLib.io_add_watch(

2558

parent_pipe.fileno(),

2559

GLib.IO_IN | GLib.IO_HUP,

2560

functools.partial(self.handle_ipc,

2561

parent_pipe=parent_pipe,

2562

proc=proc))

2563

2564

def handle_ipc(self, source, condition,

2565

parent_pipe=None,

2566

proc=None,

2567

client_object=None):

2051

gobject.io_add_watch(parent_pipe.fileno(),

2052

gobject.IO_IN | gobject.IO_HUP,

2053

functools.partial(self.handle_ipc,

2054

parent_pipe =

2055

parent_pipe,

2056

proc = proc))

2057

2058

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

2059

proc = None, client_object=None):

2568

2060

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

2569

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

2061

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

2570

2062

# Wait for other process to exit

2571

2063

proc.join()

2572

2064

return False

2573

2065

2574

2066

# Read a request from the child

2575

2067

request = parent_pipe.recv()

2576

2068

command = request[0]

2577

2069

2578

2070

if command == 'init':

2579

2071

fpr = request[1]

2580

2072

address = request[2]

2581

2582

for c in self.clients.values():

2073

2074

for c in self.clients.itervalues():

2583

2075

if c.fingerprint == fpr:

2584

2076

client = c

2585

2077

break

2592

2084

address[0])

2593

2085

parent_pipe.send(False)

2594

2086

return False

2595

2596

GLib.io_add_watch(

2597

parent_pipe.fileno(),

2598

GLib.IO_IN | GLib.IO_HUP,

2599

functools.partial(self.handle_ipc,

2600

parent_pipe=parent_pipe,

2601

proc=proc,

2602

client_object=client))

2087

2088

gobject.io_add_watch(parent_pipe.fileno(),

2089

gobject.IO_IN | gobject.IO_HUP,

2090

functools.partial(self.handle_ipc,

2091

parent_pipe =

2092

parent_pipe,

2093

proc = proc,

2094

client_object =

2095

client))

2603

2096

parent_pipe.send(True)

2604

2097

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

2605

2098

# same fileno

2608

2101

funcname = request[1]

2609

2102

args = request[2]

2610

2103

kwargs = request[3]

2611

2104

2612

2105

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

2613

2106

funcname)(*args,

2614

**kwargs)))

2615

2107

**kwargs)))

2108

2616

2109

if command == 'getattr':

2617

2110

attrname = request[1]

2618

if isinstance(client_object.__getattribute__(attrname),

2619

collections.Callable):

2620

parent_pipe.send(('function', ))

2111

if callable(client_object.__getattribute__(attrname)):

2112

parent_pipe.send(('function',))

2621

2113

else:

2622

parent_pipe.send((

2623

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

2624

2114

parent_pipe.send(('data', client_object

2115

.__getattribute__(attrname)))

2116

2625

2117

if command == 'setattr':

2626

2118

attrname = request[1]

2627

2119

value = request[2]

2628

2120

setattr(client_object, attrname, value)

2629

2121

2630

2122

return True

2631

2123

2632

2124

2633

2125

def rfc3339_duration_to_delta(duration):

2634

2126

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

2635

2127

2636

2128

>>> rfc3339_duration_to_delta("P7D")

2637

2129

datetime.timedelta(7)

2638

2130

>>> rfc3339_duration_to_delta("PT60S")

2648

2140

>>> rfc3339_duration_to_delta("P1DT3M20S")

2649

2141

datetime.timedelta(1, 200)

2650

2142

"""

2651

2143

2652

2144

# Parsing an RFC 3339 duration with regular expressions is not

2653

2145

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

2654

2146

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

2655

2147

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

2656

2148

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

2657

2149

# avoid excessive use of external libraries.

2658

2150

2659

2151

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

2660

Token = collections.namedtuple("Token", (

2661

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

2662

# a "group" containing digits

2663

"value", # datetime.timedelta or None

2664

"followers")) # Tokens valid after this token

2152

Token = collections.namedtuple("Token",

2153

("regexp", # To match token; if

2154

# "value" is not None,

2155

# must have a "group"

2156

# containing digits

2157

"value", # datetime.timedelta or

2158

# None

2159

"followers")) # Tokens valid after

2160

# this token

2665

2161

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

2666

2162

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

2667

2163

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

2668

2164

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

2669

2165

datetime.timedelta(seconds=1),

2670

frozenset((token_end, )))

2166

frozenset((token_end,)))

2671

2167

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

2672

2168

datetime.timedelta(minutes=1),

2673

2169

frozenset((token_second, token_end)))

2689

2185

frozenset((token_month, token_end)))

2690

2186

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

2691

2187

datetime.timedelta(weeks=1),

2692

frozenset((token_end, )))

2188

frozenset((token_end,)))

2693

2189

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

2694

2190

frozenset((token_year, token_month,

2695

2191

token_day, token_time,

2696

token_week)))

2697

# Define starting values:

2698

# Value so far

2699

value = datetime.timedelta()

2192

token_week))),

2193

# Define starting values

2194

value = datetime.timedelta() # Value so far

2700

2195

found_token = None

2701

# Following valid tokens

2702

followers = frozenset((token_duration, ))

2703

# String left to parse

2704

s = duration

2196

followers = frozenset(token_duration,) # Following valid tokens

2197

s = duration # String left to parse

2705

2198

# Loop until end token is found

2706

2199

while found_token is not token_end:

2707

2200

# Search for any currently valid tokens

2723

2216

break

2724

2217

else:

2725

2218

# No currently valid tokens were found

2726

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

2727

.format(duration))

2219

raise ValueError("Invalid RFC 3339 duration")

2728

2220

# End token found

2729

2221

return value

2730

2222

2731

2223

2732

2224

def string_to_delta(interval):

2733

2225

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

2734

2226

2735

2227

>>> string_to_delta('7d')

2736

2228

datetime.timedelta(7)

2737

2229

>>> string_to_delta('60s')

2745

2237

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

2746

2238

datetime.timedelta(0, 330)

2747

2239

"""

2748

2240

2749

2241

try:

2750

2242

return rfc3339_duration_to_delta(interval)

2751

2243

except ValueError:

2752

2244

pass

2753

2245

2754

2246

timevalue = datetime.timedelta(0)

2755

2247

for s in interval.split():

2756

2248

try:

2757

suffix = s[-1]

2249

suffix = unicode(s[-1])

2758

2250

value = int(s[:-1])

2759

2251

if suffix == "d":

2760

2252

delta = datetime.timedelta(value)

2767

2259

elif suffix == "w":

2768

2260

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

2769

2261

else:

2770

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

2262

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

2263

.format(suffix))

2771

2264

except IndexError as e:

2772

2265

raise ValueError(*(e.args))

2773

2266

timevalue += delta

2774

2267

return timevalue

2775

2268

2776

2269

2777

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

2270

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

2778

2271

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

2779

2272

2780

2273

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

2781

2274

if os.fork():

2782

2275

sys.exit()

2790

2283

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

2791

2284

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

2792

2285

raise OSError(errno.ENODEV,

2793

"{} not a character device"

2286

"{0} not a character device"

2794

2287

.format(os.devnull))

2795

2288

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

2796

2289

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

2800

2293

2801

2294

2802

2295

def main():

2803

2296

2804

2297

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

2805

2298

# Parsing of options, both command line and config file

2806

2299

2807

2300

parser = argparse.ArgumentParser()

2808

2301

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

2809

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

2302

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

2810

2303

help="show version number and exit")

2811

2304

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

2812

2305

help="Bind to interface IF")

2845

2338

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

2846

2339

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

2847

2340

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

2848

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

2849

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

2850

default=None)

2851

2341

2852

2342

options = parser.parse_args()

2853

2343

2854

2344

if options.check:

2855

2345

import doctest

2856

2346

fail_count, test_count = doctest.testmod()

2857

2347

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

2858

2348

2859

2349

# Default values for config file for server-global settings

2860

server_defaults = {"interface": "",

2861

"address": "",

2862

"port": "",

2863

"debug": "False",

2864

"priority":

2865

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

2866

":+SIGN-DSA-SHA256",

2867

"servicename": "Mandos",

2868

"use_dbus": "True",

2869

"use_ipv6": "True",

2870

"debuglevel": "",

2871

"restore": "True",

2872

"socket": "",

2873

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

2874

"foreground": "False",

2875

"zeroconf": "True",

2876

}

2877

2350

server_defaults = { "interface": "",

2351

"address": "",

2352

"port": "",

2353

"debug": "False",

2354

"priority":

2355

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

2356

"servicename": "Mandos",

2357

"use_dbus": "True",

2358

"use_ipv6": "True",

2359

"debuglevel": "",

2360

"restore": "True",

2361

"socket": "",

2362

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

2363

"foreground": "False",

2364

}

2365

2878

2366

# Parse config file for server-global settings

2879

2367

server_config = configparser.SafeConfigParser(server_defaults)

2880

2368

del server_defaults

2881

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

2369

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

2370

"mandos.conf"))

2882

2371

# Convert the SafeConfigParser object to a dict

2883

2372

server_settings = server_config.defaults()

2884

2373

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

2898

2387

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

2899

2388

["socket"])

2900

2389

del server_config

2901

2390

2902

2391

# Override the settings from the config file with command line

2903

2392

# options, if set.

2904

2393

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

2905

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

2906

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

2907

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

2394

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

2395

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

2396

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

2908

2397

value = getattr(options, option)

2909

2398

if value is not None:

2910

2399

server_settings[option] = value

2911

2400

del options

2912

2401

# Force all strings to be unicode

2913

2402

for option in server_settings.keys():

2914

if isinstance(server_settings[option], bytes):

2915

server_settings[option] = (server_settings[option]

2916

.decode("utf-8"))

2403

if type(server_settings[option]) is str:

2404

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

2917

2405

# Force all boolean options to be boolean

2918

2406

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

2919

"foreground", "zeroconf"):

2407

"foreground"):

2920

2408

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

2921

2409

# Debug implies foreground

2922

2410

if server_settings["debug"]:

2923

2411

server_settings["foreground"] = True

2924

2412

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

2925

2413

2926

2414

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

2927

2928

if (not server_settings["zeroconf"]

2929

and not (server_settings["port"]

2930

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

2931

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

2932

2415

2933

2416

# For convenience

2934

2417

debug = server_settings["debug"]

2935

2418

debuglevel = server_settings["debuglevel"]

2938

2421

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

2939

2422

stored_state_file)

2940

2423

foreground = server_settings["foreground"]

2941

zeroconf = server_settings["zeroconf"]

2942

2424

2943

2425

if debug:

2944

2426

initlogger(debug, logging.DEBUG)

2945

2427

else:

2948

2430

else:

2949

2431

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

2950

2432

initlogger(debug, level)

2951

2433

2952

2434

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

2953

syslogger.setFormatter(

2954

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

2955

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

2956

server_settings["servicename"])))

2957

2435

syslogger.setFormatter(logging.Formatter

2436

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

2437

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

2438

.format(server_settings

2439

["servicename"])))

2440

2958

2441

# Parse config file with clients

2959

2442

client_config = configparser.SafeConfigParser(Client

2960

2443

.client_defaults)

2961

2444

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

2962

2445

"clients.conf"))

2963

2446

2964

2447

global mandos_dbus_service

2965

2448

mandos_dbus_service = None

2966

2967

socketfd = None

2968

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

2969

socketfd = server_settings["socket"]

2970

tcp_server = MandosServer(

2971

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

2972

ClientHandler,

2973

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

2974

use_ipv6=use_ipv6,

2975

gnutls_priority=server_settings["priority"],

2976

use_dbus=use_dbus,

2977

socketfd=socketfd)

2449

2450

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

2451

server_settings["port"]),

2452

ClientHandler,

2453

interface=(server_settings["interface"]

2454

or None),

2455

use_ipv6=use_ipv6,

2456

gnutls_priority=

2457

server_settings["priority"],

2458

use_dbus=use_dbus,

2459

socketfd=(server_settings["socket"]

2460

or None))

2978

2461

if not foreground:

2979

2462

pidfilename = "/run/mandos.pid"

2980

2463

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

2981

2464

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

2982

2465

pidfile = None

2983

2466

try:

2984

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

2467

pidfile = open(pidfilename, "w")

2985

2468

except IOError as e:

2986

2469

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

2987

2470

exc_info=e)

2988

2989

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

2990

("mandos", "mandos"),

2991

("nobody", "nogroup")):

2471

2472

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

2992

2473

try:

2993

2474

uid = pwd.getpwnam(name).pw_uid

2994

gid = pwd.getpwnam(group).pw_gid

2475

gid = pwd.getpwnam(name).pw_gid

2995

2476

break

2996

2477

except KeyError:

2997

2478

continue

3001

2482

try:

3002

2483

os.setgid(gid)

3003

2484

os.setuid(uid)

3004

if debug:

3005

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

3006

gid))

3007

2485

except OSError as error:

3008

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

3009

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

3010

2486

if error.errno != errno.EPERM:

3011

2487

raise

3012

2488

3013

2489

if debug:

3014

2490

# Enable all possible GnuTLS debugging

3015

2491

3016

2492

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

3017

2493

# - GnuTLS manual

3018

gnutls.global_set_log_level(11)

3019

3020

@gnutls.log_func

2494

gnutls.library.functions.gnutls_global_set_log_level(11)

2495

2496

@gnutls.library.types.gnutls_log_func

3021

2497

def debug_gnutls(level, string):

3022

2498

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

3023

3024

gnutls.global_set_log_function(debug_gnutls)

3025

2499

2500

(gnutls.library.functions

2501

.gnutls_global_set_log_function(debug_gnutls))

2502

3026

2503

# Redirect stdin so all checkers get /dev/null

3027

2504

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

3028

2505

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

3029

2506

if null > 2:

3030

2507

os.close(null)

3031

2508

3032

2509

# Need to fork before connecting to D-Bus

3033

2510

if not foreground:

3034

2511

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

3035

2512

daemon()

3036

3037

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

3038

# to inform GLib that threads will be used.

3039

GLib.threads_init()

3040

2513

2514

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

2515

# need to inform gobject that threads will be used.

2516

gobject.threads_init()

2517

3041

2518

global main_loop

3042

2519

# From the Avahi example code

3043

2520

DBusGMainLoop(set_as_default=True)

3044

main_loop = GLib.MainLoop()

2521

main_loop = gobject.MainLoop()

3045

2522

bus = dbus.SystemBus()

3046

2523

# End of Avahi example code

3047

2524

if use_dbus:

3048

2525

try:

3049

2526

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

3050

bus,

3051

do_not_queue=True)

3052

old_bus_name = dbus.service.BusName(

3053

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

3054

do_not_queue=True)

3055

except dbus.exceptions.DBusException as e:

2527

bus, do_not_queue=True)

2528

old_bus_name = (dbus.service.BusName

2529

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

2530

do_not_queue=True))

2531

except dbus.exceptions.NameExistsException as e:

3056

2532

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

3057

2533

use_dbus = False

3058

2534

server_settings["use_dbus"] = False

3059

2535

tcp_server.use_dbus = False

3060

if zeroconf:

3061

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

3062

service = AvahiServiceToSyslog(

3063

name=server_settings["servicename"],

3064

servicetype="_mandos._tcp",

3065

protocol=protocol,

3066

bus=bus)

3067

if server_settings["interface"]:

3068

service.interface = if_nametoindex(

3069

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

3070

2536

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2537

service = AvahiServiceToSyslog(name =

2538

server_settings["servicename"],

2539

servicetype = "_mandos._tcp",

2540

protocol = protocol, bus = bus)

2541

if server_settings["interface"]:

2542

service.interface = (if_nametoindex

2543

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

2544

3071

2545

global multiprocessing_manager

3072

2546

multiprocessing_manager = multiprocessing.Manager()

3073

2547

3074

2548

client_class = Client

3075

2549

if use_dbus:

3076

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

3077

2550

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

2551

3078

2552

client_settings = Client.config_parser(client_config)

3079

2553

old_client_settings = {}

3080

2554

clients_data = {}

3081

2555

3082

2556

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

3083

2557

global wnull

3084

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

2558

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

3085

2559

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

3086

2560

# mode

3087

2561

if debug or not foreground:

3088

2562

wnull.close()

3089

2563

3090

2564

# Get client data and settings from last running state.

3091

2565

if server_settings["restore"]:

3092

2566

try:

3093

2567

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

3094

if sys.version_info.major == 2:

3095

clients_data, old_client_settings = pickle.load(

3096

stored_state)

3097

else:

3098

bytes_clients_data, bytes_old_client_settings = (

3099

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

3100

# Fix bytes to strings

3101

# clients_data

3102

# .keys()

3103

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

3104

if isinstance(key, bytes)

3105

else key): value

3106

for key, value in

3107

bytes_clients_data.items()}

3108

del bytes_clients_data

3109

for key in clients_data:

3110

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

3111

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

3112

for k, v in

3113

clients_data[key].items()}

3114

clients_data[key] = value

3115

# .client_structure

3116

value["client_structure"] = [

3117

(s.decode("utf-8")

3118

if isinstance(s, bytes)

3119

else s) for s in

3120

value["client_structure"]]

3121

# .name & .host

3122

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

3123

if isinstance(value[k], bytes):

3124

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

3125

# old_client_settings

3126

# .keys()

3127

old_client_settings = {

3128

(key.decode("utf-8")

3129

if isinstance(key, bytes)

3130

else key): value

3131

for key, value in

3132

bytes_old_client_settings.items()}

3133

del bytes_old_client_settings

3134

# .host

3135

for value in old_client_settings.values():

3136

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

3137

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

3138

.decode("utf-8"))

2568

clients_data, old_client_settings = (pickle.load

2569

(stored_state))

3139

2570

os.remove(stored_state_path)

3140

2571

except IOError as e:

3141

2572

if e.errno == errno.ENOENT:

3142

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

3143

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

2573

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

2574

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

3144

2575

else:

3145

2576

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

3146

2577

exc_info=e)

3147

2578

raise

3148

2579

except EOFError as e:

3149

2580

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

3150

"EOFError:",

3151

exc_info=e)

3152

2581

"EOFError:", exc_info=e)

2582

3153

2583

with PGPEngine() as pgp:

3154

for client_name, client in clients_data.items():

2584

for client_name, client in clients_data.iteritems():

3155

2585

# Skip removed clients

3156

2586

if client_name not in client_settings:

3157

2587

continue

3158

2588

3159

2589

# Decide which value to use after restoring saved state.

3160

2590

# We have three different values: Old config file,

3161

2591

# new config file, and saved state.

3166

2596

# For each value in new config, check if it

3167

2597

# differs from the old config value (Except for

3168

2598

# the "secret" attribute)

3169

if (name != "secret"

3170

and (value !=

3171

old_client_settings[client_name][name])):

2599

if (name != "secret" and

2600

value != old_client_settings[client_name]

2601

[name]):

3172

2602

client[name] = value

3173

2603

except KeyError:

3174

2604

pass

3175

2605

3176

2606

# Clients who has passed its expire date can still be

3177

# enabled if its last checker was successful. A Client

2607

# enabled if its last checker was successful. Clients

3178

2608

# whose checker succeeded before we stored its state is

3179

2609

# assumed to have successfully run all checkers during

3180

2610

# downtime.

3182

2612

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

3183

2613

if not client["last_checked_ok"]:

3184

2614

logger.warning(

3185

"disabling client {} - Client never "

3186

"performed a successful checker".format(

3187

client_name))

2615

"disabling client {0} - Client never "

2616

"performed a successful checker"

2617

.format(client_name))

3188

2618

client["enabled"] = False

3189

2619

elif client["last_checker_status"] != 0:

3190

2620

logger.warning(

3191

"disabling client {} - Client last"

3192

" checker failed with error code"

3193

" {}".format(

3194

client_name,

3195

client["last_checker_status"]))

2621

"disabling client {0} - Client "

2622

"last checker failed with error code {1}"

2623

.format(client_name,

2624

client["last_checker_status"]))

3196

2625

client["enabled"] = False

3197

2626

else:

3198

client["expires"] = (

3199

datetime.datetime.utcnow()

3200

+ client["timeout"])

2627

client["expires"] = (datetime.datetime

2628

.utcnow()

2629

+ client["timeout"])

3201

2630

logger.debug("Last checker succeeded,"

3202

" keeping {} enabled".format(

3203

client_name))

2631

" keeping {0} enabled"

2632

.format(client_name))

3204

2633

try:

3205

client["secret"] = pgp.decrypt(

3206

client["encrypted_secret"],

3207

client_settings[client_name]["secret"])

2634

client["secret"] = (

2635

pgp.decrypt(client["encrypted_secret"],

2636

client_settings[client_name]

2637

["secret"]))

3208

2638

except PGPError:

3209

2639

# If decryption fails, we use secret from new settings

3210

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

3211

client_name))

3212

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

3213

["secret"])

3214

2640

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

2641

.format(client_name))

2642

client["secret"] = (

2643

client_settings[client_name]["secret"])

2644

3215

2645

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

3216

2646

for client_name in (set(old_client_settings)

3217

2647

- set(client_settings)):

3219

2649

for client_name in (set(client_settings)

3220

2650

- set(old_client_settings)):

3221

2651

clients_data[client_name] = client_settings[client_name]

3222

2652

3223

2653

# Create all client objects

3224

for client_name, client in clients_data.items():

2654

for client_name, client in clients_data.iteritems():

3225

2655

tcp_server.clients[client_name] = client_class(

3226

name=client_name,

3227

settings=client,

3228

server_settings=server_settings)

3229

2656

name = client_name, settings = client,

2657

server_settings = server_settings)

2658

3230

2659

if not tcp_server.clients:

3231

2660

logger.warning("No clients defined")

3232

2661

3233

2662

if not foreground:

3234

2663

if pidfile is not None:

3235

pid = os.getpid()

3236

2664

try:

3237

2665

with pidfile:

3238

print(pid, file=pidfile)

2666

pid = os.getpid()

2667

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

3239

2668

except IOError:

3240

2669

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

3241

2670

pidfilename, pid)

3242

2671

del pidfile

3243

2672

del pidfilename

3244

3245

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

3246

GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,

3247

lambda: main_loop.quit() and False)

3248

2673

2674

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

2675

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

2676

3249

2677

if use_dbus:

3250

3251

@alternate_dbus_interfaces(

3252

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

3253

class MandosDBusService(DBusObjectWithObjectManager):

2678

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

2679

"se.bsnet.fukt.Mandos"})

2680

class MandosDBusService(DBusObjectWithProperties):

3254

2681

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

3255

3256

2682

def __init__(self):

3257

2683

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

3258

3259

2684

_interface = "se.recompile.Mandos"

3260

2685

2686

@dbus_interface_annotations(_interface)

2687

def _foo(self):

2688

return { "org.freedesktop.DBus.Property"

2689

".EmitsChangedSignal":

2690

"false"}

2691

3261

2692

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

3262

2693

def ClientAdded(self, objpath):

3263

2694

"D-Bus signal"

3264

2695

pass

3265

2696

3266

2697

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

3267

2698

def ClientNotFound(self, fingerprint, address):

3268

2699

"D-Bus signal"

3269

2700

pass

3270

3271

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

3272

"true"})

2701

3273

2702

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

3274

2703

def ClientRemoved(self, objpath, name):

3275

2704

"D-Bus signal"

3276

2705

pass

3277

3278

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

3279

"true"})

2706

3280

2707

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

3281

2708

def GetAllClients(self):

3282

2709

"D-Bus method"

3283

return dbus.Array(c.dbus_object_path for c in

3284

tcp_server.clients.values())

3285

3286

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

3287

"true"})

2710

return dbus.Array(c.dbus_object_path

2711

for c in

2712

tcp_server.clients.itervalues())

2713

3288

2714

@dbus.service.method(_interface,

3289

2715

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

3290

2716

def GetAllClientsWithProperties(self):

3291

2717

"D-Bus method"

3292

2718

return dbus.Dictionary(

3293

{c.dbus_object_path: c.GetAll(

3294

"se.recompile.Mandos.Client")

3295

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

2719

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

2720

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

3296

2721

signature="oa{sv}")

3297

2722

3298

2723

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

3299

2724

def RemoveClient(self, object_path):

3300

2725

"D-Bus method"

3301

for c in tcp_server.clients.values():

2726

for c in tcp_server.clients.itervalues():

3302

2727

if c.dbus_object_path == object_path:

3303

2728

del tcp_server.clients[c.name]

3304

2729

c.remove_from_connection()

3305

# Don't signal the disabling

2730

# Don't signal anything except ClientRemoved

3306

2731

c.disable(quiet=True)

3307

# Emit D-Bus signal for removal

3308

self.client_removed_signal(c)

2732

# Emit D-Bus signal

2733

self.ClientRemoved(object_path, c.name)

3309

2734

return

3310

2735

raise KeyError(object_path)

3311

2736

3312

2737

del _interface

3313

3314

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

3315

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

3316

def GetManagedObjects(self):

3317

"""D-Bus method"""

3318

return dbus.Dictionary(

3319

{client.dbus_object_path:

3320

dbus.Dictionary(

3321

{interface: client.GetAll(interface)

3322

for interface in

3323

client._get_all_interface_names()})

3324

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

3325

3326

def client_added_signal(self, client):

3327

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

3328

if use_dbus:

3329

# New standard signal

3330

self.InterfacesAdded(

3331

client.dbus_object_path,

3332

dbus.Dictionary(

3333

{interface: client.GetAll(interface)

3334

for interface in

3335

client._get_all_interface_names()}))

3336

# Old signal

3337

self.ClientAdded(client.dbus_object_path)

3338

3339

def client_removed_signal(self, client):

3340

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

3341

if use_dbus:

3342

# New standard signal

3343

self.InterfacesRemoved(

3344

client.dbus_object_path,

3345

client._get_all_interface_names())

3346

# Old signal

3347

self.ClientRemoved(client.dbus_object_path,

3348

client.name)

3349

2738

3350

2739

mandos_dbus_service = MandosDBusService()

3351

3352

# Save modules to variables to exempt the modules from being

3353

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

3354

mp = multiprocessing

3355

wn = wnull

3356

2740

3357

2741

def cleanup():

3358

2742

"Cleanup function; run on exit"

3359

if zeroconf:

3360

service.cleanup()

3361

3362

mp.active_children()

3363

wn.close()

2743

service.cleanup()

2744

2745

multiprocessing.active_children()

2746

wnull.close()

3364

2747

if not (tcp_server.clients or client_settings):

3365

2748

return

3366

2749

3367

2750

# Store client before exiting. Secrets are encrypted with key

3368

2751

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

3369

2752

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

3370

2753

clients = {}

3371

2754

with PGPEngine() as pgp:

3372

for client in tcp_server.clients.values():

2755

for client in tcp_server.clients.itervalues():

3373

2756

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

3374

2757

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

3375

2758

key)

3376

2759

client_dict = {}

3377

2760

3378

2761

# A list of attributes that can not be pickled

3379

2762

# + secret.

3380

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

3381

"checker", "server_settings"}

3382

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

3383

.Object):

2763

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

2764

"checker", "server_settings"))

2765

for name, typ in (inspect.getmembers

2766

(dbus.service.Object)):

3384

2767

exclude.add(name)

3385

2768

3386

2769

client_dict["encrypted_secret"] = (client

3387

2770

.encrypted_secret)

3388

2771

for attr in client.client_structure:

3389

2772

if attr not in exclude:

3390

2773

client_dict[attr] = getattr(client, attr)

3391

2774

3392

2775

clients[client.name] = client_dict

3393

2776

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

3394

2777

3395

2778

try:

3396

with tempfile.NamedTemporaryFile(

3397

mode='wb',

3398

suffix=".pickle",

3399

prefix='clients-',

3400

dir=os.path.dirname(stored_state_path),

3401

delete=False) as stored_state:

3402

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

3403

protocol=2)

3404

tempname = stored_state.name

2779

with (tempfile.NamedTemporaryFile

2780

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

2781

dir=os.path.dirname(stored_state_path),

2782

delete=False)) as stored_state:

2783

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

2784

tempname=stored_state.name

3405

2785

os.rename(tempname, stored_state_path)

3406

2786

except (IOError, OSError) as e:

3407

2787

if not debug:

3410

2790

except NameError:

3411

2791

pass

3412

2792

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

3413

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

2793

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

3414

2794

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

3415

2795

else:

3416

2796

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

3417

2797

exc_info=e)

3418

2798

raise

3419

2799

3420

2800

# Delete all clients, and settings from config

3421

2801

while tcp_server.clients:

3422

2802

name, client = tcp_server.clients.popitem()

3423

2803

if use_dbus:

3424

2804

client.remove_from_connection()

3425

# Don't signal the disabling

2805

# Don't signal anything except ClientRemoved

3426

2806

client.disable(quiet=True)

3427

# Emit D-Bus signal for removal

3428

2807

if use_dbus:

3429

mandos_dbus_service.client_removed_signal(client)

2808

# Emit D-Bus signal

2809

mandos_dbus_service.ClientRemoved(client

2810

.dbus_object_path,

2811

client.name)

3430

2812

client_settings.clear()

3431

2813

3432

2814

atexit.register(cleanup)

3433

3434

for client in tcp_server.clients.values():

2815

2816

for client in tcp_server.clients.itervalues():

3435

2817

if use_dbus:

3436

# Emit D-Bus signal for adding

3437

mandos_dbus_service.client_added_signal(client)

2818

# Emit D-Bus signal

2819

mandos_dbus_service.ClientAdded(client.dbus_object_path)

3438

2820

# Need to initiate checking of clients

3439

2821

if client.enabled:

3440

2822

client.init_checker()

3441

2823

3442

2824

tcp_server.enable()

3443

2825

tcp_server.server_activate()

3444

2826

3445

2827

# Find out what port we got

3446

if zeroconf:

3447

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

2828

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

3448

2829

if use_ipv6:

3449

2830

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

3450

2831

" flowinfo %d, scope_id %d",

3452

2833

else: # IPv4

3453

2834

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

3454

2835

*tcp_server.socket.getsockname())

3455

3456

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

3457

2836

2837

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

2838

3458

2839

try:

3459

if zeroconf:

3460

# From the Avahi example code

3461

try:

3462

service.activate()

3463

except dbus.exceptions.DBusException as error:

3464

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

3465

cleanup()

3466

sys.exit(1)

3467

# End of Avahi example code

3468

3469

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

3470

lambda *args, **kwargs:

3471

(tcp_server.handle_request

3472

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

3473

2840

# From the Avahi example code

2841

try:

2842

service.activate()

2843

except dbus.exceptions.DBusException as error:

2844

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

2845

cleanup()

2846

sys.exit(1)

2847

# End of Avahi example code

2848

2849

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

2850

lambda *args, **kwargs:

2851

(tcp_server.handle_request

2852

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

2853

3474

2854

logger.debug("Starting main loop")

3475

2855

main_loop.run()

3476

2856

except AvahiError as error:

3485

2865

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

3486

2866

cleanup()

3487

2867

3488

3489

2868

if __name__ == '__main__':

3490

2869

main()