/mandos/release : revision 237.7.195

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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 = "1.7.14"

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SO_BINDTODEVICE = None

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version = "1.6.2"

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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',

246

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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)

253

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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()

263

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)

214

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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219

275

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# Pretend that we have an Avahi module

277

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."""

280

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):

290

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

291

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

292

ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h

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ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h

294

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()

301

302

303

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class AvahiError(Exception):

304

222

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

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self.value = value

306

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

307

**kwargs)

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

225

def __unicode__(self):

226

return unicode(repr(self.value))

309

227

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class AvahiServiceError(AvahiError):

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pass

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313

314

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class AvahiGroupError(AvahiError):

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pass

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317

234

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class AvahiService(object):

319

236

"""An Avahi (Zeroconf) service.

320

237

321

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Attributes:

322

239

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,

340

interface=avahi.IF_UNSPEC,

341

name=None,

342

servicetype=None,

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port=None,

344

TXT=None,

345

domain="",

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host="",

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max_renames=32768,

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protocol=avahi.PROTO_UNSPEC,

349

bus=None):

255

256

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

257

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

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

259

protocol = avahi.PROTO_UNSPEC, bus = None):

350

260

self.interface = interface

351

261

self.name = name

352

262

self.type = servicetype

361

271

self.server = None

362

272

self.bus = bus

363

273

self.entry_group_state_changed_match = None

364

365

def rename(self, remove=True):

274

275

def rename(self):

366

276

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

367

277

if self.rename_count >= self.max_renames:

368

278

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

369

279

" after %i retries, exiting.",

370

280

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:

378

self.remove()

286

self.remove()

379

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try:

380

288

self.add()

381

289

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

396

300

if self.group is not None:

397

301

self.group.Reset()

398

302

399

303

def add(self):

400

304

"""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()

421

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.

1350

934

# The byte_arrays option is not supported yet on

1351

935

# signatures other than "ay".

1352

936

if prop._dbus_signature != "ay":

1353

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

1354

"'ay' signature {!r}"

1355

.format(prop._dbus_signature))

937

raise ValueError

1356

938

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

1357

939

for byte in value))

1358

940

prop(value)

1359

1360

@dbus.service.method(dbus.PROPERTIES_IFACE,

1361

in_signature="s",

941

942

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

1362

943

out_signature="a{sv}")

1363

944

def GetAll(self, interface_name):

1364

945

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

1365

946

standard.

1366

947

1367

948

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

1368

949

"""

1369

950

properties = {}

1379

960

if not hasattr(value, "variant_level"):

1380

961

properties[name] = value

1381

962

continue

1382

properties[name] = type(value)(

1383

value, variant_level=value.variant_level + 1)

963

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

964

value.variant_level+1)

1384

965

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

966

1394

967

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1395

968

out_signature="s",

1396

969

path_keyword='object_path',

1397

970

connection_keyword='connection')

1398

971

def Introspect(self, object_path, connection):

1399

972

"""Overloading of standard D-Bus method.

1400

973

1401

974

Inserts property tags and interface annotation tags.

1402

975

"""

1403

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1404

object_path,

1405

connection)

976

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

977

connection)

1406

978

try:

1407

979

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

1408

1409

980

def make_tag(document, name, prop):

1410

981

e = document.createElement("property")

1411

982

e.setAttribute("name", name)

1412

983

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

1413

984

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

1414

985

return e

1415

1416

986

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

1417

987

# Add property tags

1418

988

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

1421

991

if prop._dbus_interface

1422

992

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

1423

993

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)

994

# Add annotation tags

995

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

996

for tag in if_tag.getElementsByTagName(typ):

997

annots = dict()

998

for name, prop in (self.

999

_get_all_dbus_things(typ)):

1000

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

1001

and prop._dbus_interface

1002

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

1003

annots.update(getattr

1004

(prop,

1005

"_dbus_annotations",

1006

{}))

1007

for name, value in annots.iteritems():

1008

ann_tag = document.createElement(

1009

"annotation")

1010

ann_tag.setAttribute("name", name)

1011

ann_tag.setAttribute("value", value)

1012

tag.appendChild(ann_tag)

1013

# Add interface annotation tags

1014

for annotation, value in dict(

1015

itertools.chain.from_iterable(

1016

annotations().iteritems()

1017

for name, annotations in

1018

self._get_all_dbus_things("interface")

1019

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

1020

)).iteritems():

1021

ann_tag = document.createElement("annotation")

1022

ann_tag.setAttribute("name", annotation)

1023

ann_tag.setAttribute("value", value)

1024

if_tag.appendChild(ann_tag)

1440

1025

# Add the names to the return values for the

1441

1026

# "org.freedesktop.DBus.Properties" methods

1442

1027

if (if_tag.getAttribute("name")

1461

1046

return xmlstring

1462

1047

1463

1048

1464

try:

1465

dbus.OBJECT_MANAGER_IFACE

1466

except AttributeError:

1467

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

1468

1469

1470

class DBusObjectWithObjectManager(DBusObjectWithAnnotations):

1471

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

1472

1473

Classes inheriting from this exposes the standard

1474

GetManagedObjects call and the InterfacesAdded and

1475

InterfacesRemoved signals on the standard

1476

"org.freedesktop.DBus.ObjectManager" interface.

1477

1478

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

1479

manually.

1480

"""

1481

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

1482

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

1483

def GetManagedObjects(self):

1484

"""This function must be overridden"""

1485

raise NotImplementedError()

1486

1487

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,

1488

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

1489

def InterfacesAdded(self, object_path, interfaces_and_properties):

1490

pass

1491

1492

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

1493

def InterfacesRemoved(self, object_path, interfaces):

1494

pass

1495

1496

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1497

out_signature="s",

1498

path_keyword='object_path',

1499

connection_keyword='connection')

1500

def Introspect(self, object_path, connection):

1501

"""Overloading of standard D-Bus method.

1502

1503

Override return argument name of GetManagedObjects to be

1504

"objpath_interfaces_and_properties"

1505

"""

1506

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1507

object_path,

1508

connection)

1509

try:

1510

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

1511

1512

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

1513

# Fix argument name for the GetManagedObjects method

1514

if (if_tag.getAttribute("name")

1515

== dbus.OBJECT_MANAGER_IFACE):

1516

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

1517

if (cn.getAttribute("name")

1518

== "GetManagedObjects"):

1519

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

1520

if (arg.getAttribute("direction")

1521

== "out"):

1522

arg.setAttribute(

1523

"name",

1524

"objpath_interfaces"

1525

"_and_properties")

1526

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

1527

document.unlink()

1528

except (AttributeError, xml.dom.DOMException,

1529

xml.parsers.expat.ExpatError) as error:

1530

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

1531

exc_info=error)

1532

return xmlstring

1533

1534

1535

1049

def datetime_to_dbus(dt, variant_level=0):

1536

1050

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

1537

1051

if dt is None:

1538

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

1539

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

1052

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

1053

return dbus.String(dt.isoformat(),

1054

variant_level=variant_level)

1540

1055

1541

1056

1542

1057

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1544

1059

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

1545

1060

interface names according to the "alt_interface_names" mapping.

1546

1061

Usage:

1547

1062

1548

1063

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

1549

1064

"net.example.AlternateInterface"})

1550

1065

class SampleDBusObject(dbus.service.Object):

1551

1066

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

1552

1067

def SampleDBusMethod():

1553

1068

pass

1554

1069

1555

1070

The above "SampleDBusMethod" on "SampleDBusObject" will be

1556

1071

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

1557

1072

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

1558

1073

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

1559

1074

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

1560

1075

1561

1076

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

1562

1077

(from DBusObjectWithProperties) and interfaces (from the

1563

1078

dbus_interface_annotations decorator).

1564

1079

"""

1565

1566

1080

def wrapper(cls):

1567

1081

for orig_interface_name, alt_interface_name in (

1568

alt_interface_names.items()):

1082

alt_interface_names.iteritems()):

1569

1083

attr = {}

1570

1084

interface_names = set()

1571

1085

# Go though all attributes of the class

1573

1087

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

1574

1088

# with the wrong interface name

1575

1089

if (not hasattr(attribute, "_dbus_interface")

1576

or not attribute._dbus_interface.startswith(

1577

orig_interface_name)):

1090

or not attribute._dbus_interface

1091

.startswith(orig_interface_name)):

1578

1092

continue

1579

1093

# Create an alternate D-Bus interface name based on

1580

1094

# the current name

1581

alt_interface = attribute._dbus_interface.replace(

1582

orig_interface_name, alt_interface_name)

1095

alt_interface = (attribute._dbus_interface

1096

.replace(orig_interface_name,

1097

alt_interface_name))

1583

1098

interface_names.add(alt_interface)

1584

1099

# Is this a D-Bus signal?

1585

1100

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

1586

1101

# Extract the original non-method undecorated

1587

1102

# function by black magic

1588

if sys.version_info.major == 2:

1589

nonmethod_func = (dict(

1103

nonmethod_func = (dict(

1590

1104

zip(attribute.func_code.co_freevars,

1591

attribute.__closure__))

1592

["func"].cell_contents)

1593

else:

1594

nonmethod_func = (dict(

1595

zip(attribute.__code__.co_freevars,

1596

attribute.__closure__))

1597

["func"].cell_contents)

1105

attribute.__closure__))["func"]

1106

.cell_contents)

1598

1107

# Create a new, but exactly alike, function

1599

1108

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

1600

1109

# with the alternate D-Bus interface name

1601

new_function = copy_function(nonmethod_func)

1602

new_function = (dbus.service.signal(

1603

alt_interface,

1604

attribute._dbus_signature)(new_function))

1110

new_function = (dbus.service.signal

1111

(alt_interface,

1112

attribute._dbus_signature)

1113

(types.FunctionType(

1114

nonmethod_func.func_code,

1115

nonmethod_func.func_globals,

1116

nonmethod_func.func_name,

1117

nonmethod_func.func_defaults,

1118

nonmethod_func.func_closure)))

1605

1119

# Copy annotations, if any

1606

1120

try:

1607

new_function._dbus_annotations = dict(

1608

attribute._dbus_annotations)

1121

new_function._dbus_annotations = (

1122

dict(attribute._dbus_annotations))

1609

1123

except AttributeError:

1610

1124

pass

1611

1612

1125

# Define a creator of a function to call both the

1613

1126

# original and alternate functions, so both the

1614

1127

# original and alternate signals gets sent when

1617

1130

"""This function is a scope container to pass

1618

1131

func1 and func2 to the "call_both" function

1619

1132

outside of its arguments"""

1620

1621

@functools.wraps(func2)

1622

1133

def call_both(*args, **kwargs):

1623

1134

"""This function will emit two D-Bus

1624

1135

signals by calling func1 and func2"""

1625

1136

func1(*args, **kwargs)

1626

1137

func2(*args, **kwargs)

1627

# Make wrapper function look like a D-Bus

1628

# signal

1629

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

1630

if name.startswith("_dbus_"):

1631

setattr(call_both, name, attr)

1632

1633

1138

return call_both

1634

1139

# Create the "call_both" function and add it to

1635

1140

# the class

1640

1145

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

1641

1146

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

1642

1147

# to the class.

1643

attr[attrname] = (

1644

dbus.service.method(

1645

alt_interface,

1646

attribute._dbus_in_signature,

1647

attribute._dbus_out_signature)

1648

(copy_function(attribute)))

1148

attr[attrname] = (dbus.service.method

1149

(alt_interface,

1150

attribute._dbus_in_signature,

1151

attribute._dbus_out_signature)

1152

(types.FunctionType

1153

(attribute.func_code,

1154

attribute.func_globals,

1155

attribute.func_name,

1156

attribute.func_defaults,

1157

attribute.func_closure)))

1649

1158

# Copy annotations, if any

1650

1159

try:

1651

attr[attrname]._dbus_annotations = dict(

1652

attribute._dbus_annotations)

1160

attr[attrname]._dbus_annotations = (

1161

dict(attribute._dbus_annotations))

1653

1162

except AttributeError:

1654

1163

pass

1655

1164

# Is this a D-Bus property?

1658

1167

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

1659

1168

# property with the alternate D-Bus interface

1660

1169

# name. Add it to the class.

1661

attr[attrname] = (dbus_service_property(

1662

alt_interface, attribute._dbus_signature,

1663

attribute._dbus_access,

1664

attribute._dbus_get_args_options

1665

["byte_arrays"])

1666

(copy_function(attribute)))

1170

attr[attrname] = (dbus_service_property

1171

(alt_interface,

1172

attribute._dbus_signature,

1173

attribute._dbus_access,

1174

attribute

1175

._dbus_get_args_options

1176

["byte_arrays"])

1177

(types.FunctionType

1178

(attribute.func_code,

1179

attribute.func_globals,

1180

attribute.func_name,

1181

attribute.func_defaults,

1182

attribute.func_closure)))

1667

1183

# Copy annotations, if any

1668

1184

try:

1669

attr[attrname]._dbus_annotations = dict(

1670

attribute._dbus_annotations)

1185

attr[attrname]._dbus_annotations = (

1186

dict(attribute._dbus_annotations))

1671

1187

except AttributeError:

1672

1188

pass

1673

1189

# Is this a D-Bus interface?

1676

1192

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

1677

1193

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

1678

1194

# to the class.

1679

attr[attrname] = (

1680

dbus_interface_annotations(alt_interface)

1681

(copy_function(attribute)))

1195

attr[attrname] = (dbus_interface_annotations

1196

(alt_interface)

1197

(types.FunctionType

1198

(attribute.func_code,

1199

attribute.func_globals,

1200

attribute.func_name,

1201

attribute.func_defaults,

1202

attribute.func_closure)))

1682

1203

if deprecate:

1683

1204

# Deprecate all alternate interfaces

1684

iname = "_AlternateDBusNames_interface_annotation{}"

1205

iname="_AlternateDBusNames_interface_annotation{0}"

1685

1206

for interface_name in interface_names:

1686

1687

1207

@dbus_interface_annotations(interface_name)

1688

1208

def func(self):

1689

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

1690

"true"}

1209

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

1210

"true" }

1691

1211

# Find an unused name

1692

1212

for aname in (iname.format(i)

1693

1213

for i in itertools.count()):

1697

1217

if interface_names:

1698

1218

# Replace the class with a new subclass of it with

1699

1219

# methods, signals, etc. as created above.

1700

if sys.version_info.major == 2:

1701

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

1702

(cls, ), attr)

1703

else:

1704

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

1705

(cls, ), attr)

1220

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

1221

(cls,), attr)

1706

1222

return cls

1707

1708

1223

return wrapper

1709

1224

1710

1225

1711

1226

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

1712

"se.bsnet.fukt.Mandos"})

1227

"se.bsnet.fukt.Mandos"})

1713

1228

class ClientDBus(Client, DBusObjectWithProperties):

1714

1229

"""A Client class using D-Bus

1715

1230

1716

1231

Attributes:

1717

1232

dbus_object_path: dbus.ObjectPath

1718

1233

bus: dbus.SystemBus()

1719

1234

"""

1720

1235

1721

1236

runtime_expansions = (Client.runtime_expansions

1722

+ ("dbus_object_path", ))

1723

1724

_interface = "se.recompile.Mandos.Client"

1725

1237

+ ("dbus_object_path",))

1238

1726

1239

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

1727

1728

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

1240

1241

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

1729

1242

self.bus = bus

1730

1243

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

1731

1244

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

1732

1245

# the D-Bus

1733

client_object_name = str(self.name).translate(

1246

client_object_name = unicode(self.name).translate(

1734

1247

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

1735

1248

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

1736

self.dbus_object_path = dbus.ObjectPath(

1737

"/clients/" + client_object_name)

1249

self.dbus_object_path = (dbus.ObjectPath

1250

("/clients/" + client_object_name))

1738

1251

DBusObjectWithProperties.__init__(self, self.bus,

1739

1252

self.dbus_object_path)

1740

1741

def notifychangeproperty(transform_func, dbus_name,

1742

type_func=lambda x: x,

1743

variant_level=1,

1744

invalidate_only=False,

1745

_interface=_interface):

1253

1254

def notifychangeproperty(transform_func,

1255

dbus_name, type_func=lambda x: x,

1256

variant_level=1):

1746

1257

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

1747

1258

its changes to DBus.

1748

1259

1749

1260

transform_fun: Function that takes a value and a variant_level

1750

1261

and transforms it to a D-Bus type.

1751

1262

dbus_name: D-Bus name of the variable

1753

1264

to the D-Bus. Default: no transform

1754

1265

variant_level: D-Bus variant level. Default: 1

1755

1266

"""

1756

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

1757

1267

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

1758

1268

def setter(self, value):

1759

1269

if hasattr(self, "dbus_object_path"):

1760

1270

if (not hasattr(self, attrname) or

1761

1271

type_func(getattr(self, attrname, None))

1762

1272

!= type_func(value)):

1763

if invalidate_only:

1764

self.PropertiesChanged(

1765

_interface, dbus.Dictionary(),

1766

dbus.Array((dbus_name, )))

1767

else:

1768

dbus_value = transform_func(

1769

type_func(value),

1770

variant_level=variant_level)

1771

self.PropertyChanged(dbus.String(dbus_name),

1772

dbus_value)

1773

self.PropertiesChanged(

1774

_interface,

1775

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

1776

dbus_value}),

1777

dbus.Array())

1273

dbus_value = transform_func(type_func(value),

1274

variant_level

1275

=variant_level)

1276

self.PropertyChanged(dbus.String(dbus_name),

1277

dbus_value)

1778

1278

setattr(self, attrname, value)

1779

1279

1780

1280

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

1781

1281

1782

1282

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1783

1283

approvals_pending = notifychangeproperty(dbus.Boolean,

1784

1284

"ApprovalPending",

1785

type_func=bool)

1285

type_func = bool)

1786

1286

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

1787

1287

last_enabled = notifychangeproperty(datetime_to_dbus,

1788

1288

"LastEnabled")

1789

checker = notifychangeproperty(

1790

dbus.Boolean, "CheckerRunning",

1791

type_func=lambda checker: checker is not None)

1289

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

1290

type_func = lambda checker:

1291

checker is not None)

1792

1292

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1793

1293

"LastCheckedOK")

1794

1294

last_checker_status = notifychangeproperty(dbus.Int16,

1797

1297

datetime_to_dbus, "LastApprovalRequest")

1798

1298

approved_by_default = notifychangeproperty(dbus.Boolean,

1799

1299

"ApprovedByDefault")

1800

approval_delay = notifychangeproperty(

1801

dbus.UInt64, "ApprovalDelay",

1802

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

1300

approval_delay = notifychangeproperty(dbus.UInt64,

1301

"ApprovalDelay",

1302

type_func =

1303

timedelta_to_milliseconds)

1803

1304

approval_duration = notifychangeproperty(

1804

1305

dbus.UInt64, "ApprovalDuration",

1805

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

1306

type_func = timedelta_to_milliseconds)

1806

1307

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

1807

timeout = notifychangeproperty(

1808

dbus.UInt64, "Timeout",

1809

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

1308

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

1309

type_func =

1310

timedelta_to_milliseconds)

1810

1311

extended_timeout = notifychangeproperty(

1811

1312

dbus.UInt64, "ExtendedTimeout",

1812

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

1813

interval = notifychangeproperty(

1814

dbus.UInt64, "Interval",

1815

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

1313

type_func = timedelta_to_milliseconds)

1314

interval = notifychangeproperty(dbus.UInt64,

1315

"Interval",

1316

type_func =

1317

timedelta_to_milliseconds)

1816

1318

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

1817

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

1818

invalidate_only=True)

1819

1319

1820

1320

del notifychangeproperty

1821

1321

1822

1322

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

1823

1323

try:

1824

1324

self.remove_from_connection()

1827

1327

if hasattr(DBusObjectWithProperties, "__del__"):

1828

1328

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

1829

1329

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

1830

1831

def checker_callback(self, source, condition,

1832

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

1833

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

1834

connection, command, *args,

1835

**kwargs)

1836

exitstatus = self.last_checker_status

1837

if exitstatus >= 0:

1330

1331

def checker_callback(self, pid, condition, command,

1332

*args, **kwargs):

1333

self.checker_callback_tag = None

1334

self.checker = None

1335

if os.WIFEXITED(condition):

1336

exitstatus = os.WEXITSTATUS(condition)

1838

1337

# Emit D-Bus signal

1839

1338

self.CheckerCompleted(dbus.Int16(exitstatus),

1840

# This is specific to GNU libC

1841

dbus.Int64(exitstatus << 8),

1339

dbus.Int64(condition),

1842

1340

dbus.String(command))

1843

1341

else:

1844

1342

# Emit D-Bus signal

1845

1343

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

1846

dbus.Int64(

1847

# This is specific to GNU libC

1848

(exitstatus << 8)

1849

| self.last_checker_signal),

1344

dbus.Int64(condition),

1850

1345

dbus.String(command))

1851

return ret

1852

1346

1347

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

1348

*args, **kwargs)

1349

1853

1350

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

1854

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

1351

old_checker = self.checker

1352

if self.checker is not None:

1353

old_checker_pid = self.checker.pid

1354

else:

1355

old_checker_pid = None

1855

1356

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

1856

1357

# Only if new checker process was started

1857

1358

if (self.checker is not None

1859

1360

# Emit D-Bus signal

1860

1361

self.CheckerStarted(self.current_checker_command)

1861

1362

return r

1862

1363

1863

1364

def _reset_approved(self):

1864

1365

self.approved = None

1865

1366

return False

1866

1367

1867

1368

def approve(self, value=True):

1868

1369

self.approved = value

1869

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

1870

* 1000), self._reset_approved)

1370

gobject.timeout_add(timedelta_to_milliseconds

1371

(self.approval_duration),

1372

self._reset_approved)

1871

1373

self.send_changedstate()

1872

1873

# D-Bus methods, signals & properties

1874

1875

# Interfaces

1876

1877

# Signals

1878

1374

1375

## D-Bus methods, signals & properties

1376

_interface = "se.recompile.Mandos.Client"

1377

1378

## Interfaces

1379

1380

@dbus_interface_annotations(_interface)

1381

def _foo(self):

1382

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

1383

"false"}

1384

1385

## Signals

1386

1879

1387

# CheckerCompleted - signal

1880

1388

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

1881

1389

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

1882

1390

"D-Bus signal"

1883

1391

pass

1884

1392

1885

1393

# CheckerStarted - signal

1886

1394

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

1887

1395

def CheckerStarted(self, command):

1888

1396

"D-Bus signal"

1889

1397

pass

1890

1398

1891

1399

# PropertyChanged - signal

1892

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

1893

1400

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

1894

1401

def PropertyChanged(self, property, value):

1895

1402

"D-Bus signal"

1896

1403

pass

1897

1404

1898

1405

# GotSecret - signal

1899

1406

@dbus.service.signal(_interface)

1900

1407

def GotSecret(self):

1903

1410

server to mandos-client

1904

1411

"""

1905

1412

pass

1906

1413

1907

1414

# Rejected - signal

1908

1415

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

1909

1416

def Rejected(self, reason):

1910

1417

"D-Bus signal"

1911

1418

pass

1912

1419

1913

1420

# NeedApproval - signal

1914

1421

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

1915

1422

def NeedApproval(self, timeout, default):

1916

1423

"D-Bus signal"

1917

1424

return self.need_approval()

1918

1919

# Methods

1920

1425

1426

## Methods

1427

1921

1428

# Approve - method

1922

1429

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

1923

1430

def Approve(self, value):

1924

1431

self.approve(value)

1925

1432

1926

1433

# CheckedOK - method

1927

1434

@dbus.service.method(_interface)

1928

1435

def CheckedOK(self):

1929

1436

self.checked_ok()

1930

1437

1931

1438

# Enable - method

1932

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

1933

1439

@dbus.service.method(_interface)

1934

1440

def Enable(self):

1935

1441

"D-Bus method"

1936

1442

self.enable()

1937

1443

1938

1444

# StartChecker - method

1939

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

1940

1445

@dbus.service.method(_interface)

1941

1446

def StartChecker(self):

1942

1447

"D-Bus method"

1943

1448

self.start_checker()

1944

1449

1945

1450

# Disable - method

1946

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

1947

1451

@dbus.service.method(_interface)

1948

1452

def Disable(self):

1949

1453

"D-Bus method"

1950

1454

self.disable()

1951

1455

1952

1456

# StopChecker - method

1953

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

1954

1457

@dbus.service.method(_interface)

1955

1458

def StopChecker(self):

1956

1459

self.stop_checker()

1957

1958

# Properties

1959

1460

1461

## Properties

1462

1960

1463

# ApprovalPending - property

1961

1464

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

1962

1465

def ApprovalPending_dbus_property(self):

1963

1466

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

1964

1467

1965

1468

# ApprovedByDefault - property

1966

@dbus_service_property(_interface,

1967

signature="b",

1469

@dbus_service_property(_interface, signature="b",

1968

1470

access="readwrite")

1969

1471

def ApprovedByDefault_dbus_property(self, value=None):

1970

1472

if value is None: # get

1971

1473

return dbus.Boolean(self.approved_by_default)

1972

1474

self.approved_by_default = bool(value)

1973

1475

1974

1476

# ApprovalDelay - property

1975

@dbus_service_property(_interface,

1976

signature="t",

1477

@dbus_service_property(_interface, signature="t",

1977

1478

access="readwrite")

1978

1479

def ApprovalDelay_dbus_property(self, value=None):

1979

1480

if value is None: # get

1980

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

1981

* 1000)

1481

return dbus.UInt64(self.approval_delay_milliseconds())

1982

1482

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

1983

1483

1984

1484

# ApprovalDuration - property

1985

@dbus_service_property(_interface,

1986

signature="t",

1485

@dbus_service_property(_interface, signature="t",

1987

1486

access="readwrite")

1988

1487

def ApprovalDuration_dbus_property(self, value=None):

1989

1488

if value is None: # get

1990

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

1991

* 1000)

1489

return dbus.UInt64(timedelta_to_milliseconds(

1490

self.approval_duration))

1992

1491

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

1993

1492

1994

1493

# Name - property

1995

@dbus_annotations(

1996

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

1997

1494

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

1998

1495

def Name_dbus_property(self):

1999

1496

return dbus.String(self.name)

2000

1497

2001

1498

# Fingerprint - property

2002

@dbus_annotations(

2003

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

2004

1499

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

2005

1500

def Fingerprint_dbus_property(self):

2006

1501

return dbus.String(self.fingerprint)

2007

1502

2008

1503

# Host - property

2009

@dbus_service_property(_interface,

2010

signature="s",

1504

@dbus_service_property(_interface, signature="s",

2011

1505

access="readwrite")

2012

1506

def Host_dbus_property(self, value=None):

2013

1507

if value is None: # get

2014

1508

return dbus.String(self.host)

2015

self.host = str(value)

2016

1509

self.host = unicode(value)

1510

2017

1511

# Created - property

2018

@dbus_annotations(

2019

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

2020

1512

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

2021

1513

def Created_dbus_property(self):

2022

1514

return datetime_to_dbus(self.created)

2023

1515

2024

1516

# LastEnabled - property

2025

1517

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

2026

1518

def LastEnabled_dbus_property(self):

2027

1519

return datetime_to_dbus(self.last_enabled)

2028

1520

2029

1521

# Enabled - property

2030

@dbus_service_property(_interface,

2031

signature="b",

1522

@dbus_service_property(_interface, signature="b",

2032

1523

access="readwrite")

2033

1524

def Enabled_dbus_property(self, value=None):

2034

1525

if value is None: # get

2037

1528

self.enable()

2038

1529

else:

2039

1530

self.disable()

2040

1531

2041

1532

# LastCheckedOK - property

2042

@dbus_service_property(_interface,

2043

signature="s",

1533

@dbus_service_property(_interface, signature="s",

2044

1534

access="readwrite")

2045

1535

def LastCheckedOK_dbus_property(self, value=None):

2046

1536

if value is not None:

2047

1537

self.checked_ok()

2048

1538

return

2049

1539

return datetime_to_dbus(self.last_checked_ok)

2050

1540

2051

1541

# LastCheckerStatus - property

2052

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

1542

@dbus_service_property(_interface, signature="n",

1543

access="read")

2053

1544

def LastCheckerStatus_dbus_property(self):

2054

1545

return dbus.Int16(self.last_checker_status)

2055

1546

2056

1547

# Expires - property

2057

1548

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

2058

1549

def Expires_dbus_property(self):

2059

1550

return datetime_to_dbus(self.expires)

2060

1551

2061

1552

# LastApprovalRequest - property

2062

1553

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

2063

1554

def LastApprovalRequest_dbus_property(self):

2064

1555

return datetime_to_dbus(self.last_approval_request)

2065

1556

2066

1557

# Timeout - property

2067

@dbus_service_property(_interface,

2068

signature="t",

1558

@dbus_service_property(_interface, signature="t",

2069

1559

access="readwrite")

2070

1560

def Timeout_dbus_property(self, value=None):

2071

1561

if value is None: # get

2072

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

1562

return dbus.UInt64(self.timeout_milliseconds())

2073

1563

old_timeout = self.timeout

2074

1564

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

2075

1565

# Reschedule disabling

2083

1573

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

2084

1574

is None):

2085

1575

return

2086

GLib.source_remove(self.disable_initiator_tag)

2087

self.disable_initiator_tag = GLib.timeout_add(

2088

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

2089

self.disable)

2090

1576

gobject.source_remove(self.disable_initiator_tag)

1577

self.disable_initiator_tag = (

1578

gobject.timeout_add(

1579

timedelta_to_milliseconds(self.expires - now),

1580

self.disable))

1581

2091

1582

# ExtendedTimeout - property

2092

@dbus_service_property(_interface,

2093

signature="t",

1583

@dbus_service_property(_interface, signature="t",

2094

1584

access="readwrite")

2095

1585

def ExtendedTimeout_dbus_property(self, value=None):

2096

1586

if value is None: # get

2097

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

2098

* 1000)

1587

return dbus.UInt64(self.extended_timeout_milliseconds())

2099

1588

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

2100

1589

2101

1590

# Interval - property

2102

@dbus_service_property(_interface,

2103

signature="t",

1591

@dbus_service_property(_interface, signature="t",

2104

1592

access="readwrite")

2105

1593

def Interval_dbus_property(self, value=None):

2106

1594

if value is None: # get

2107

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

1595

return dbus.UInt64(self.interval_milliseconds())

2108

1596

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

2109

1597

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

2110

1598

return

2111

1599

if self.enabled:

2112

1600

# Reschedule checker run

2113

GLib.source_remove(self.checker_initiator_tag)

2114

self.checker_initiator_tag = GLib.timeout_add(

2115

value, self.start_checker)

2116

self.start_checker() # Start one now, too

2117

1601

gobject.source_remove(self.checker_initiator_tag)

1602

self.checker_initiator_tag = (gobject.timeout_add

1603

(value, self.start_checker))

1604

self.start_checker() # Start one now, too

1605

2118

1606

# Checker - property

2119

@dbus_service_property(_interface,

2120

signature="s",

1607

@dbus_service_property(_interface, signature="s",

2121

1608

access="readwrite")

2122

1609

def Checker_dbus_property(self, value=None):

2123

1610

if value is None: # get

2124

1611

return dbus.String(self.checker_command)

2125

self.checker_command = str(value)

2126

1612

self.checker_command = unicode(value)

1613

2127

1614

# CheckerRunning - property

2128

@dbus_service_property(_interface,

2129

signature="b",

1615

@dbus_service_property(_interface, signature="b",

2130

1616

access="readwrite")

2131

1617

def CheckerRunning_dbus_property(self, value=None):

2132

1618

if value is None: # get

2135

1621

self.start_checker()

2136

1622

else:

2137

1623

self.stop_checker()

2138

1624

2139

1625

# ObjectPath - property

2140

@dbus_annotations(

2141

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

2142

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

2143

1626

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

2144

1627

def ObjectPath_dbus_property(self):

2145

return self.dbus_object_path # is already a dbus.ObjectPath

2146

1628

return self.dbus_object_path # is already a dbus.ObjectPath

1629

2147

1630

# Secret = property

2148

@dbus_annotations(

2149

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

2150

"invalidates"})

2151

@dbus_service_property(_interface,

2152

signature="ay",

2153

access="write",

2154

byte_arrays=True)

1631

@dbus_service_property(_interface, signature="ay",

1632

access="write", byte_arrays=True)

2155

1633

def Secret_dbus_property(self, value):

2156

self.secret = bytes(value)

2157

1634

self.secret = str(value)

1635

2158

1636

del _interface

2159

1637

2160

1638

2163

1641

self._pipe = child_pipe

2164

1642

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

2165

1643

if not self._pipe.recv():

2166

raise KeyError(fpr)

2167

1644

raise KeyError()

1645

2168

1646

def __getattribute__(self, name):

2169

1647

if name == '_pipe':

2170

1648

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

2173

1651

if data[0] == 'data':

2174

1652

return data[1]

2175

1653

if data[0] == 'function':

2176

2177

1654

def func(*args, **kwargs):

2178

1655

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

2179

1656

return self._pipe.recv()[1]

2180

2181

1657

return func

2182

1658

2183

1659

def __setattr__(self, name, value):

2184

1660

if name == '_pipe':

2185

1661

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

2188

1664

2189

1665

class ClientHandler(socketserver.BaseRequestHandler, object):

2190

1666

"""A class to handle client connections.

2191

1667

2192

1668

Instantiated once for each connection to handle it.

2193

1669

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

2194

1670

2195

1671

def handle(self):

2196

1672

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

2197

1673

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

2198

str(self.client_address))

1674

unicode(self.client_address))

2199

1675

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

2200

1676

self.server.child_pipe.fileno())

2201

2202

session = gnutls.ClientSession(self.request)

2203

2204

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

2205

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

2206

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

2207

# "+DHE-DSS"))

1677

1678

session = (gnutls.connection

1679

.ClientSession(self.request,

1680

gnutls.connection

1681

.X509Credentials()))

1682

1683

# Note: gnutls.connection.X509Credentials is really a

1684

# generic GnuTLS certificate credentials object so long as

1685

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

1686

# here despite using OpenPGP certificates.

1687

1688

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

1689

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

1690

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

1691

# "+DHE-DSS"))

2208

1692

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

2209

1693

priority = self.server.gnutls_priority

2210

1694

if priority is None:

2211

1695

priority = "NORMAL"

2212

gnutls.priority_set_direct(session._c_object,

2213

priority.encode("utf-8"),

2214

None)

2215

1696

(gnutls.library.functions

1697

.gnutls_priority_set_direct(session._c_object,

1698

priority, None))

1699

2216

1700

# Start communication using the Mandos protocol

2217

1701

# Get protocol number

2218

1702

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

2223

1707

except (ValueError, IndexError, RuntimeError) as error:

2224

1708

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

2225

1709

return

2226

1710

2227

1711

# Start GnuTLS connection

2228

1712

try:

2229

1713

session.handshake()

2230

except gnutls.Error as error:

1714

except gnutls.errors.GNUTLSError as error:

2231

1715

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

2232

1716

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

2233

1717

# established. Just abandon the request.

2234

1718

return

2235

1719

logger.debug("Handshake succeeded")

2236

1720

2237

1721

approval_required = False

2238

1722

try:

2239

1723

try:

2240

fpr = self.fingerprint(

2241

self.peer_certificate(session))

2242

except (TypeError, gnutls.Error) as error:

1724

fpr = self.fingerprint(self.peer_certificate

1725

(session))

1726

except (TypeError,

1727

gnutls.errors.GNUTLSError) as error:

2243

1728

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

2244

1729

return

2245

1730

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

2246

1731

2247

1732

try:

2248

1733

client = ProxyClient(child_pipe, fpr,

2249

1734

self.client_address)

2250

1735

except KeyError:

2251

1736

return

2252

1737

2253

1738

if client.approval_delay:

2254

1739

delay = client.approval_delay

2255

1740

client.approvals_pending += 1

2256

1741

approval_required = True

2257

1742

2258

1743

while True:

2259

1744

if not client.enabled:

2260

1745

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

2261

client.name)

1746

client.name)

2262

1747

if self.server.use_dbus:

2263

1748

# Emit D-Bus signal

2264

1749

client.Rejected("Disabled")

2265

1750

return

2266

1751

2267

1752

if client.approved or not client.approval_delay:

2268

# We are approved or approval is disabled

1753

#We are approved or approval is disabled

2269

1754

break

2270

1755

elif client.approved is None:

2271

1756

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

2273

1758

if self.server.use_dbus:

2274

1759

# Emit D-Bus signal

2275

1760

client.NeedApproval(

2276

client.approval_delay.total_seconds()

2277

* 1000, client.approved_by_default)

1761

client.approval_delay_milliseconds(),

1762

client.approved_by_default)

2278

1763

else:

2279

1764

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

2280

1765

client.name)

2282

1767

# Emit D-Bus signal

2283

1768

client.Rejected("Denied")

2284

1769

return

2285

2286

# wait until timeout or approved

1770

1771

#wait until timeout or approved

2287

1772

time = datetime.datetime.now()

2288

1773

client.changedstate.acquire()

2289

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

1774

client.changedstate.wait(

1775

float(timedelta_to_milliseconds(delay)

1776

/ 1000))

2290

1777

client.changedstate.release()

2291

1778

time2 = datetime.datetime.now()

2292

1779

if (time2 - time) >= delay:

2302

1789

break

2303

1790

else:

2304

1791

delay -= time2 - time

2305

2306

try:

2307

session.send(client.secret)

2308

except gnutls.Error as error:

2309

logger.warning("gnutls send failed",

2310

exc_info=error)

2311

return

2312

1792

1793

sent_size = 0

1794

while sent_size < len(client.secret):

1795

try:

1796

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

1797

except gnutls.errors.GNUTLSError as error:

1798

logger.warning("gnutls send failed",

1799

exc_info=error)

1800

return

1801

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

1802

sent, len(client.secret)

1803

- (sent_size + sent))

1804

sent_size += sent

1805

2313

1806

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

2314

1807

# bump the timeout using extended_timeout

2315

1808

client.bump_timeout(client.extended_timeout)

2316

1809

if self.server.use_dbus:

2317

1810

# Emit D-Bus signal

2318

1811

client.GotSecret()

2319

1812

2320

1813

finally:

2321

1814

if approval_required:

2322

1815

client.approvals_pending -= 1

2323

1816

try:

2324

1817

session.bye()

2325

except gnutls.Error as error:

1818

except gnutls.errors.GNUTLSError as error:

2326

1819

logger.warning("GnuTLS bye failed",

2327

1820

exc_info=error)

2328

1821

2329

1822

@staticmethod

2330

1823

def peer_certificate(session):

2331

1824

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

2332

1825

# If not an OpenPGP certificate...

2333

if (gnutls.certificate_type_get(session._c_object)

2334

!= gnutls.CRT_OPENPGP):

2335

# ...return invalid data

2336

return b""

1826

if (gnutls.library.functions

1827

.gnutls_certificate_type_get(session._c_object)

1828

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1829

# ...do the normal thing

1830

return session.peer_certificate

2337

1831

list_size = ctypes.c_uint(1)

2338

cert_list = (gnutls.certificate_get_peers

1832

cert_list = (gnutls.library.functions

1833

.gnutls_certificate_get_peers

2339

1834

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

2340

1835

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

2341

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

1836

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

1837

" certificate")

2342

1838

if list_size.value == 0:

2343

1839

return None

2344

1840

cert = cert_list[0]

2345

1841

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

2346

1842

2347

1843

@staticmethod

2348

1844

def fingerprint(openpgp):

2349

1845

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

2350

1846

# New GnuTLS "datum" with the OpenPGP public key

2351

datum = gnutls.datum_t(

2352

ctypes.cast(ctypes.c_char_p(openpgp),

2353

ctypes.POINTER(ctypes.c_ubyte)),

2354

ctypes.c_uint(len(openpgp)))

1847

datum = (gnutls.library.types

1848

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

1849

ctypes.POINTER

1850

(ctypes.c_ubyte)),

1851

ctypes.c_uint(len(openpgp))))

2355

1852

# New empty GnuTLS certificate

2356

crt = gnutls.openpgp_crt_t()

2357

gnutls.openpgp_crt_init(ctypes.byref(crt))

1853

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1854

(gnutls.library.functions

1855

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

2358

1856

# Import the OpenPGP public key into the certificate

2359

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

2360

gnutls.OPENPGP_FMT_RAW)

1857

(gnutls.library.functions

1858

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

1859

gnutls.library.constants

1860

.GNUTLS_OPENPGP_FMT_RAW))

2361

1861

# Verify the self signature in the key

2362

1862

crtverify = ctypes.c_uint()

2363

gnutls.openpgp_crt_verify_self(crt, 0,

2364

ctypes.byref(crtverify))

1863

(gnutls.library.functions

1864

.gnutls_openpgp_crt_verify_self(crt, 0,

1865

ctypes.byref(crtverify)))

2365

1866

if crtverify.value != 0:

2366

gnutls.openpgp_crt_deinit(crt)

2367

raise gnutls.CertificateSecurityError("Verify failed")

1867

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1868

raise (gnutls.errors.CertificateSecurityError

1869

("Verify failed"))

2368

1870

# New buffer for the fingerprint

2369

1871

buf = ctypes.create_string_buffer(20)

2370

1872

buf_len = ctypes.c_size_t()

2371

1873

# Get the fingerprint from the certificate into the buffer

2372

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

2373

ctypes.byref(buf_len))

1874

(gnutls.library.functions

1875

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

1876

ctypes.byref(buf_len)))

2374

1877

# Deinit the certificate

2375

gnutls.openpgp_crt_deinit(crt)

1878

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

2376

1879

# Convert the buffer to a Python bytestring

2377

1880

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

2378

1881

# Convert the bytestring to hexadecimal notation

2382

1885

2383

1886

class MultiprocessingMixIn(object):

2384

1887

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

2385

2386

1888

def sub_process_main(self, request, address):

2387

1889

try:

2388

1890

self.finish_request(request, address)

2389

1891

except Exception:

2390

1892

self.handle_error(request, address)

2391

1893

self.close_request(request)

2392

1894

2393

1895

def process_request(self, request, address):

2394

1896

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

2395

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

2396

args=(request, address))

1897

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

1898

args = (request, address))

2397

1899

proc.start()

2398

1900

return proc

2399

1901

2400

1902

2401

1903

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

2402

1904

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

2403

2404

1905

def process_request(self, request, client_address):

2405

1906

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

2406

1907

2407

1908

This function creates a new pipe in self.pipe

2408

1909

"""

2409

1910

parent_pipe, self.child_pipe = multiprocessing.Pipe()

2410

1911

2411

1912

proc = MultiprocessingMixIn.process_request(self, request,

2412

1913

client_address)

2413

1914

self.child_pipe.close()

2414

1915

self.add_pipe(parent_pipe, proc)

2415

1916

2416

1917

def add_pipe(self, parent_pipe, proc):

2417

1918

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

2418

1919

raise NotImplementedError()

2421

1922

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

2422

1923

socketserver.TCPServer, object):

2423

1924

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

2424

1925

2425

1926

Attributes:

2426

1927

enabled: Boolean; whether this server is activated yet

2427

1928

interface: None or a network interface name (string)

2428

1929

use_ipv6: Boolean; to use IPv6 or not

2429

1930

"""

2430

2431

1931

def __init__(self, server_address, RequestHandlerClass,

2432

interface=None,

2433

use_ipv6=True,

2434

socketfd=None):

1932

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

2435

1933

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

2436

1934

creating a new one with socket.socket().

2437

1935

"""

2443

1941

self.socketfd = socketfd

2444

1942

# Save the original socket.socket() function

2445

1943

self.socket_socket = socket.socket

2446

2447

1944

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

2448

#

1945

#

2449

1946

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

2450

1947

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

2451

1948

# patching socket.socket.)

2452

#

1949

#

2453

1950

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

2454

1951

@functools.wraps(socket.socket)

2455

1952

def socket_wrapper(*args, **kwargs):

2467

1964

# socket_wrapper(), if socketfd was set.

2468

1965

socketserver.TCPServer.__init__(self, server_address,

2469

1966

RequestHandlerClass)

2470

1967

2471

1968

def server_bind(self):

2472

1969

"""This overrides the normal server_bind() function

2473

1970

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

2474

1971

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

2475

global SO_BINDTODEVICE

2476

1972

if self.interface is not None:

2477

1973

if SO_BINDTODEVICE is None:

2478

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

2479

# common enough.

2480

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

2481

SO_BINDTODEVICE = 25

2482

try:

2483

self.socket.setsockopt(

2484

socket.SOL_SOCKET, SO_BINDTODEVICE,

2485

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

2486

except socket.error as error:

2487

if error.errno == errno.EPERM:

2488

logger.error("No permission to bind to"

2489

" interface %s", self.interface)

2490

elif error.errno == errno.ENOPROTOOPT:

2491

logger.error("SO_BINDTODEVICE not available;"

2492

" cannot bind to interface %s",

2493

self.interface)

2494

elif error.errno == errno.ENODEV:

2495

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

2496

" cannot bind", self.interface)

2497

else:

2498

raise

1974

logger.error("SO_BINDTODEVICE does not exist;"

1975

" cannot bind to interface %s",

1976

self.interface)

1977

else:

1978

try:

1979

self.socket.setsockopt(socket.SOL_SOCKET,

1980

SO_BINDTODEVICE,

1981

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

1982

except socket.error as error:

1983

if error.errno == errno.EPERM:

1984

logger.error("No permission to bind to"

1985

" interface %s", self.interface)

1986

elif error.errno == errno.ENOPROTOOPT:

1987

logger.error("SO_BINDTODEVICE not available;"

1988

" cannot bind to interface %s",

1989

self.interface)

1990

elif error.errno == errno.ENODEV:

1991

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

1992

" cannot bind", self.interface)

1993

else:

1994

raise

2499

1995

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

2500

1996

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

2501

1997

if not self.server_address[0]:

2502

1998

if self.address_family == socket.AF_INET6:

2503

any_address = "::" # in6addr_any

1999

any_address = "::" # in6addr_any

2504

2000

else:

2505

any_address = "0.0.0.0" # INADDR_ANY

2001

any_address = "0.0.0.0" # INADDR_ANY

2506

2002

self.server_address = (any_address,

2507

2003

self.server_address[1])

2508

2004

elif not self.server_address[1]:

2509

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

2005

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

2006

0)

2510

2007

# if self.interface:

2511

2008

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

2512

2009

# 0, # port

2518

2015

2519

2016

class MandosServer(IPv6_TCPServer):

2520

2017

"""Mandos server.

2521

2018

2522

2019

Attributes:

2523

2020

clients: set of Client objects

2524

2021

gnutls_priority GnuTLS priority string

2525

2022

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

2526

2527

Assumes a GLib.MainLoop event loop.

2023

2024

Assumes a gobject.MainLoop event loop.

2528

2025

"""

2529

2530

2026

def __init__(self, server_address, RequestHandlerClass,

2531

interface=None,

2532

use_ipv6=True,

2533

clients=None,

2534

gnutls_priority=None,

2535

use_dbus=True,

2536

socketfd=None):

2027

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

2028

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

2537

2029

self.enabled = False

2538

2030

self.clients = clients

2539

2031

if self.clients is None:

2542

2034

self.gnutls_priority = gnutls_priority

2543

2035

IPv6_TCPServer.__init__(self, server_address,

2544

2036

RequestHandlerClass,

2545

interface=interface,

2546

use_ipv6=use_ipv6,

2547

socketfd=socketfd)

2548

2037

interface = interface,

2038

use_ipv6 = use_ipv6,

2039

socketfd = socketfd)

2549

2040

def server_activate(self):

2550

2041

if self.enabled:

2551

2042

return socketserver.TCPServer.server_activate(self)

2552

2043

2553

2044

def enable(self):

2554

2045

self.enabled = True

2555

2046

2556

2047

def add_pipe(self, parent_pipe, proc):

2557

2048

# Call "handle_ipc" for both data and EOF events

2558

GLib.io_add_watch(

2559

parent_pipe.fileno(),

2560

GLib.IO_IN | GLib.IO_HUP,

2561

functools.partial(self.handle_ipc,

2562

parent_pipe=parent_pipe,

2563

proc=proc))

2564

2565

def handle_ipc(self, source, condition,

2566

parent_pipe=None,

2567

proc=None,

2568

client_object=None):

2049

gobject.io_add_watch(parent_pipe.fileno(),

2050

gobject.IO_IN | gobject.IO_HUP,

2051

functools.partial(self.handle_ipc,

2052

parent_pipe =

2053

parent_pipe,

2054

proc = proc))

2055

2056

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

2057

proc = None, client_object=None):

2569

2058

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

2570

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

2059

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

2571

2060

# Wait for other process to exit

2572

2061

proc.join()

2573

2062

return False

2574

2063

2575

2064

# Read a request from the child

2576

2065

request = parent_pipe.recv()

2577

2066

command = request[0]

2578

2067

2579

2068

if command == 'init':

2580

2069

fpr = request[1]

2581

2070

address = request[2]

2582

2583

for c in self.clients.values():

2071

2072

for c in self.clients.itervalues():

2584

2073

if c.fingerprint == fpr:

2585

2074

client = c

2586

2075

break

2593

2082

address[0])

2594

2083

parent_pipe.send(False)

2595

2084

return False

2596

2597

GLib.io_add_watch(

2598

parent_pipe.fileno(),

2599

GLib.IO_IN | GLib.IO_HUP,

2600

functools.partial(self.handle_ipc,

2601

parent_pipe=parent_pipe,

2602

proc=proc,

2603

client_object=client))

2085

2086

gobject.io_add_watch(parent_pipe.fileno(),

2087

gobject.IO_IN | gobject.IO_HUP,

2088

functools.partial(self.handle_ipc,

2089

parent_pipe =

2090

parent_pipe,

2091

proc = proc,

2092

client_object =

2093

client))

2604

2094

parent_pipe.send(True)

2605

2095

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

2606

2096

# same fileno

2609

2099

funcname = request[1]

2610

2100

args = request[2]

2611

2101

kwargs = request[3]

2612

2102

2613

2103

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

2614

2104

funcname)(*args,

2615

**kwargs)))

2616

2105

**kwargs)))

2106

2617

2107

if command == 'getattr':

2618

2108

attrname = request[1]

2619

if isinstance(client_object.__getattribute__(attrname),

2620

collections.Callable):

2621

parent_pipe.send(('function', ))

2109

if callable(client_object.__getattribute__(attrname)):

2110

parent_pipe.send(('function',))

2622

2111

else:

2623

parent_pipe.send((

2624

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

2625

2112

parent_pipe.send(('data', client_object

2113

.__getattribute__(attrname)))

2114

2626

2115

if command == 'setattr':

2627

2116

attrname = request[1]

2628

2117

value = request[2]

2629

2118

setattr(client_object, attrname, value)

2630

2119

2631

2120

return True

2632

2121

2633

2122

2634

2123

def rfc3339_duration_to_delta(duration):

2635

2124

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

2636

2125

2637

2126

>>> rfc3339_duration_to_delta("P7D")

2638

2127

datetime.timedelta(7)

2639

2128

>>> rfc3339_duration_to_delta("PT60S")

2649

2138

>>> rfc3339_duration_to_delta("P1DT3M20S")

2650

2139

datetime.timedelta(1, 200)

2651

2140

"""

2652

2141

2653

2142

# Parsing an RFC 3339 duration with regular expressions is not

2654

2143

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

2655

2144

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

2656

2145

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

2657

2146

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

2658

2147

# avoid excessive use of external libraries.

2659

2148

2660

2149

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

2661

Token = collections.namedtuple("Token", (

2662

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

2663

# a "group" containing digits

2664

"value", # datetime.timedelta or None

2665

"followers")) # Tokens valid after this token

2150

Token = collections.namedtuple("Token",

2151

("regexp", # To match token; if

2152

# "value" is not None,

2153

# must have a "group"

2154

# containing digits

2155

"value", # datetime.timedelta or

2156

# None

2157

"followers")) # Tokens valid after

2158

# this token

2666

2159

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

2667

2160

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

2668

2161

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

2669

2162

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

2670

2163

datetime.timedelta(seconds=1),

2671

frozenset((token_end, )))

2164

frozenset((token_end,)))

2672

2165

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

2673

2166

datetime.timedelta(minutes=1),

2674

2167

frozenset((token_second, token_end)))

2690

2183

frozenset((token_month, token_end)))

2691

2184

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

2692

2185

datetime.timedelta(weeks=1),

2693

frozenset((token_end, )))

2186

frozenset((token_end,)))

2694

2187

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

2695

2188

frozenset((token_year, token_month,

2696

2189

token_day, token_time,

2697

token_week)))

2698

# Define starting values:

2699

# Value so far

2700

value = datetime.timedelta()

2190

token_week))),

2191

# Define starting values

2192

value = datetime.timedelta() # Value so far

2701

2193

found_token = None

2702

# Following valid tokens

2703

followers = frozenset((token_duration, ))

2704

# String left to parse

2705

s = duration

2194

followers = frozenset(token_duration,) # Following valid tokens

2195

s = duration # String left to parse

2706

2196

# Loop until end token is found

2707

2197

while found_token is not token_end:

2708

2198

# Search for any currently valid tokens

2724

2214

break

2725

2215

else:

2726

2216

# No currently valid tokens were found

2727

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

2728

.format(duration))

2217

raise ValueError("Invalid RFC 3339 duration")

2729

2218

# End token found

2730

2219

return value

2731

2220

2732

2221

2733

2222

def string_to_delta(interval):

2734

2223

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

2735

2224

2736

2225

>>> string_to_delta('7d')

2737

2226

datetime.timedelta(7)

2738

2227

>>> string_to_delta('60s')

2746

2235

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

2747

2236

datetime.timedelta(0, 330)

2748

2237

"""

2749

2238

2750

2239

try:

2751

2240

return rfc3339_duration_to_delta(interval)

2752

2241

except ValueError:

2753

2242

pass

2754

2243

2755

2244

timevalue = datetime.timedelta(0)

2756

2245

for s in interval.split():

2757

2246

try:

2758

suffix = s[-1]

2247

suffix = unicode(s[-1])

2759

2248

value = int(s[:-1])

2760

2249

if suffix == "d":

2761

2250

delta = datetime.timedelta(value)

2768

2257

elif suffix == "w":

2769

2258

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

2770

2259

else:

2771

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

2260

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

2261

.format(suffix))

2772

2262

except IndexError as e:

2773

2263

raise ValueError(*(e.args))

2774

2264

timevalue += delta

2775

2265

return timevalue

2776

2266

2777

2267

2778

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

2268

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

2779

2269

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

2780

2270

2781

2271

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

2782

2272

if os.fork():

2783

2273

sys.exit()

2791

2281

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

2792

2282

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

2793

2283

raise OSError(errno.ENODEV,

2794

"{} not a character device"

2284

"{0} not a character device"

2795

2285

.format(os.devnull))

2796

2286

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

2797

2287

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

2801

2291

2802

2292

2803

2293

def main():

2804

2294

2805

2295

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

2806

2296

# Parsing of options, both command line and config file

2807

2297

2808

2298

parser = argparse.ArgumentParser()

2809

2299

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

2810

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

2300

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

2811

2301

help="show version number and exit")

2812

2302

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

2813

2303

help="Bind to interface IF")

2846

2336

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

2847

2337

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

2848

2338

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

2849

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

2850

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

2851

default=None)

2852

2339

2853

2340

options = parser.parse_args()

2854

2341

2855

2342

if options.check:

2856

2343

import doctest

2857

fail_count, test_count = doctest.testmod()

2858

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

2859

2344

doctest.testmod()

2345

sys.exit()

2346

2860

2347

# Default values for config file for server-global settings

2861

server_defaults = {"interface": "",

2862

"address": "",

2863

"port": "",

2864

"debug": "False",

2865

"priority":

2866

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

2867

":+SIGN-DSA-SHA256",

2868

"servicename": "Mandos",

2869

"use_dbus": "True",

2870

"use_ipv6": "True",

2871

"debuglevel": "",

2872

"restore": "True",

2873

"socket": "",

2874

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

2875

"foreground": "False",

2876

"zeroconf": "True",

2877

}

2878

2348

server_defaults = { "interface": "",

2349

"address": "",

2350

"port": "",

2351

"debug": "False",

2352

"priority":

2353

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

2354

"servicename": "Mandos",

2355

"use_dbus": "True",

2356

"use_ipv6": "True",

2357

"debuglevel": "",

2358

"restore": "True",

2359

"socket": "",

2360

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

2361

"foreground": "False",

2362

}

2363

2879

2364

# Parse config file for server-global settings

2880

2365

server_config = configparser.SafeConfigParser(server_defaults)

2881

2366

del server_defaults

2882

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

2367

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

2368

"mandos.conf"))

2883

2369

# Convert the SafeConfigParser object to a dict

2884

2370

server_settings = server_config.defaults()

2885

2371

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

2899

2385

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

2900

2386

["socket"])

2901

2387

del server_config

2902

2388

2903

2389

# Override the settings from the config file with command line

2904

2390

# options, if set.

2905

2391

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

2906

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

2907

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

2908

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

2392

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

2393

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

2394

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

2909

2395

value = getattr(options, option)

2910

2396

if value is not None:

2911

2397

server_settings[option] = value

2912

2398

del options

2913

2399

# Force all strings to be unicode

2914

2400

for option in server_settings.keys():

2915

if isinstance(server_settings[option], bytes):

2916

server_settings[option] = (server_settings[option]

2917

.decode("utf-8"))

2401

if type(server_settings[option]) is str:

2402

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

2918

2403

# Force all boolean options to be boolean

2919

2404

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

2920

"foreground", "zeroconf"):

2405

"foreground"):

2921

2406

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

2922

2407

# Debug implies foreground

2923

2408

if server_settings["debug"]:

2924

2409

server_settings["foreground"] = True

2925

2410

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

2926

2411

2927

2412

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

2928

2929

if (not server_settings["zeroconf"]

2930

and not (server_settings["port"]

2931

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

2932

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

2933

2413

2934

2414

# For convenience

2935

2415

debug = server_settings["debug"]

2936

2416

debuglevel = server_settings["debuglevel"]

2939

2419

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

2940

2420

stored_state_file)

2941

2421

foreground = server_settings["foreground"]

2942

zeroconf = server_settings["zeroconf"]

2943

2422

2944

2423

if debug:

2945

2424

initlogger(debug, logging.DEBUG)

2946

2425

else:

2949

2428

else:

2950

2429

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

2951

2430

initlogger(debug, level)

2952

2431

2953

2432

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

2954

syslogger.setFormatter(

2955

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

2956

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

2957

server_settings["servicename"])))

2958

2433

syslogger.setFormatter(logging.Formatter

2434

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

2435

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

2436

.format(server_settings

2437

["servicename"])))

2438

2959

2439

# Parse config file with clients

2960

2440

client_config = configparser.SafeConfigParser(Client

2961

2441

.client_defaults)

2962

2442

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

2963

2443

"clients.conf"))

2964

2444

2965

2445

global mandos_dbus_service

2966

2446

mandos_dbus_service = None

2967

2968

socketfd = None

2969

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

2970

socketfd = server_settings["socket"]

2971

tcp_server = MandosServer(

2972

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

2973

ClientHandler,

2974

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

2975

use_ipv6=use_ipv6,

2976

gnutls_priority=server_settings["priority"],

2977

use_dbus=use_dbus,

2978

socketfd=socketfd)

2447

2448

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

2449

server_settings["port"]),

2450

ClientHandler,

2451

interface=(server_settings["interface"]

2452

or None),

2453

use_ipv6=use_ipv6,

2454

gnutls_priority=

2455

server_settings["priority"],

2456

use_dbus=use_dbus,

2457

socketfd=(server_settings["socket"]

2458

or None))

2979

2459

if not foreground:

2980

2460

pidfilename = "/run/mandos.pid"

2981

2461

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

2982

2462

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

2983

2463

pidfile = None

2984

2464

try:

2985

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

2465

pidfile = open(pidfilename, "w")

2986

2466

except IOError as e:

2987

2467

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

2988

2468

exc_info=e)

2989

2990

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

2991

("mandos", "mandos"),

2992

("nobody", "nogroup")):

2469

2470

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

2993

2471

try:

2994

2472

uid = pwd.getpwnam(name).pw_uid

2995

gid = pwd.getpwnam(group).pw_gid

2473

gid = pwd.getpwnam(name).pw_gid

2996

2474

break

2997

2475

except KeyError:

2998

2476

continue

3002

2480

try:

3003

2481

os.setgid(gid)

3004

2482

os.setuid(uid)

3005

if debug:

3006

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

3007

gid))

3008

2483

except OSError as error:

3009

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

3010

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

3011

2484

if error.errno != errno.EPERM:

3012

2485

raise

3013

2486

3014

2487

if debug:

3015

2488

# Enable all possible GnuTLS debugging

3016

2489

3017

2490

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

3018

2491

# - GnuTLS manual

3019

gnutls.global_set_log_level(11)

3020

3021

@gnutls.log_func

2492

gnutls.library.functions.gnutls_global_set_log_level(11)

2493

2494

@gnutls.library.types.gnutls_log_func

3022

2495

def debug_gnutls(level, string):

3023

2496

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

3024

3025

gnutls.global_set_log_function(debug_gnutls)

3026

2497

2498

(gnutls.library.functions

2499

.gnutls_global_set_log_function(debug_gnutls))

2500

3027

2501

# Redirect stdin so all checkers get /dev/null

3028

2502

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

3029

2503

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

3030

2504

if null > 2:

3031

2505

os.close(null)

3032

2506

3033

2507

# Need to fork before connecting to D-Bus

3034

2508

if not foreground:

3035

2509

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

3036

2510

daemon()

3037

3038

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

3039

# to inform GLib that threads will be used.

3040

GLib.threads_init()

3041

2511

2512

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

2513

# need to inform gobject that threads will be used.

2514

gobject.threads_init()

2515

3042

2516

global main_loop

3043

2517

# From the Avahi example code

3044

2518

DBusGMainLoop(set_as_default=True)

3045

main_loop = GLib.MainLoop()

2519

main_loop = gobject.MainLoop()

3046

2520

bus = dbus.SystemBus()

3047

2521

# End of Avahi example code

3048

2522

if use_dbus:

3049

2523

try:

3050

2524

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

3051

bus,

3052

do_not_queue=True)

3053

old_bus_name = dbus.service.BusName(

3054

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

3055

do_not_queue=True)

3056

except dbus.exceptions.DBusException as e:

2525

bus, do_not_queue=True)

2526

old_bus_name = (dbus.service.BusName

2527

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

2528

do_not_queue=True))

2529

except dbus.exceptions.NameExistsException as e:

3057

2530

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

3058

2531

use_dbus = False

3059

2532

server_settings["use_dbus"] = False

3060

2533

tcp_server.use_dbus = False

3061

if zeroconf:

3062

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

3063

service = AvahiServiceToSyslog(

3064

name=server_settings["servicename"],

3065

servicetype="_mandos._tcp",

3066

protocol=protocol,

3067

bus=bus)

3068

if server_settings["interface"]:

3069

service.interface = if_nametoindex(

3070

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

3071

2534

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2535

service = AvahiServiceToSyslog(name =

2536

server_settings["servicename"],

2537

servicetype = "_mandos._tcp",

2538

protocol = protocol, bus = bus)

2539

if server_settings["interface"]:

2540

service.interface = (if_nametoindex

2541

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

2542

3072

2543

global multiprocessing_manager

3073

2544

multiprocessing_manager = multiprocessing.Manager()

3074

2545

3075

2546

client_class = Client

3076

2547

if use_dbus:

3077

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

3078

2548

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

2549

3079

2550

client_settings = Client.config_parser(client_config)

3080

2551

old_client_settings = {}

3081

2552

clients_data = {}

3082

2553

3083

2554

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

3084

2555

global wnull

3085

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

2556

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

3086

2557

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

3087

2558

# mode

3088

2559

if debug or not foreground:

3089

2560

wnull.close()

3090

2561

3091

2562

# Get client data and settings from last running state.

3092

2563

if server_settings["restore"]:

3093

2564

try:

3094

2565

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

3095

if sys.version_info.major == 2:

3096

clients_data, old_client_settings = pickle.load(

3097

stored_state)

3098

else:

3099

bytes_clients_data, bytes_old_client_settings = (

3100

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

3101

# Fix bytes to strings

3102

# clients_data

3103

# .keys()

3104

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

3105

if isinstance(key, bytes)

3106

else key): value

3107

for key, value in

3108

bytes_clients_data.items()}

3109

del bytes_clients_data

3110

for key in clients_data:

3111

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

3112

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

3113

for k, v in

3114

clients_data[key].items()}

3115

clients_data[key] = value

3116

# .client_structure

3117

value["client_structure"] = [

3118

(s.decode("utf-8")

3119

if isinstance(s, bytes)

3120

else s) for s in

3121

value["client_structure"]]

3122

# .name & .host

3123

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

3124

if isinstance(value[k], bytes):

3125

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

3126

# old_client_settings

3127

# .keys()

3128

old_client_settings = {

3129

(key.decode("utf-8")

3130

if isinstance(key, bytes)

3131

else key): value

3132

for key, value in

3133

bytes_old_client_settings.items()}

3134

del bytes_old_client_settings

3135

# .host

3136

for value in old_client_settings.values():

3137

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

3138

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

3139

.decode("utf-8"))

2566

clients_data, old_client_settings = (pickle.load

2567

(stored_state))

3140

2568

os.remove(stored_state_path)

3141

2569

except IOError as e:

3142

2570

if e.errno == errno.ENOENT:

3143

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

3144

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

2571

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

2572

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

3145

2573

else:

3146

2574

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

3147

2575

exc_info=e)

3148

2576

raise

3149

2577

except EOFError as e:

3150

2578

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

3151

"EOFError:",

3152

exc_info=e)

3153

2579

"EOFError:", exc_info=e)

2580

3154

2581

with PGPEngine() as pgp:

3155

for client_name, client in clients_data.items():

2582

for client_name, client in clients_data.iteritems():

3156

2583

# Skip removed clients

3157

2584

if client_name not in client_settings:

3158

2585

continue

3159

2586

3160

2587

# Decide which value to use after restoring saved state.

3161

2588

# We have three different values: Old config file,

3162

2589

# new config file, and saved state.

3167

2594

# For each value in new config, check if it

3168

2595

# differs from the old config value (Except for

3169

2596

# the "secret" attribute)

3170

if (name != "secret"

3171

and (value !=

3172

old_client_settings[client_name][name])):

2597

if (name != "secret" and

2598

value != old_client_settings[client_name]

2599

[name]):

3173

2600

client[name] = value

3174

2601

except KeyError:

3175

2602

pass

3176

2603

3177

2604

# Clients who has passed its expire date can still be

3178

# enabled if its last checker was successful. A Client

2605

# enabled if its last checker was successful. Clients

3179

2606

# whose checker succeeded before we stored its state is

3180

2607

# assumed to have successfully run all checkers during

3181

2608

# downtime.

3183

2610

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

3184

2611

if not client["last_checked_ok"]:

3185

2612

logger.warning(

3186

"disabling client {} - Client never "

3187

"performed a successful checker".format(

3188

client_name))

2613

"disabling client {0} - Client never "

2614

"performed a successful checker"

2615

.format(client_name))

3189

2616

client["enabled"] = False

3190

2617

elif client["last_checker_status"] != 0:

3191

2618

logger.warning(

3192

"disabling client {} - Client last"

3193

" checker failed with error code"

3194

" {}".format(

3195

client_name,

3196

client["last_checker_status"]))

2619

"disabling client {0} - Client "

2620

"last checker failed with error code {1}"

2621

.format(client_name,

2622

client["last_checker_status"]))

3197

2623

client["enabled"] = False

3198

2624

else:

3199

client["expires"] = (

3200

datetime.datetime.utcnow()

3201

+ client["timeout"])

2625

client["expires"] = (datetime.datetime

2626

.utcnow()

2627

+ client["timeout"])

3202

2628

logger.debug("Last checker succeeded,"

3203

" keeping {} enabled".format(

3204

client_name))

2629

" keeping {0} enabled"

2630

.format(client_name))

3205

2631

try:

3206

client["secret"] = pgp.decrypt(

3207

client["encrypted_secret"],

3208

client_settings[client_name]["secret"])

2632

client["secret"] = (

2633

pgp.decrypt(client["encrypted_secret"],

2634

client_settings[client_name]

2635

["secret"]))

3209

2636

except PGPError:

3210

2637

# If decryption fails, we use secret from new settings

3211

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

3212

client_name))

3213

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

3214

["secret"])

3215

2638

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

2639

.format(client_name))

2640

client["secret"] = (

2641

client_settings[client_name]["secret"])

2642

3216

2643

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

3217

2644

for client_name in (set(old_client_settings)

3218

2645

- set(client_settings)):

3220

2647

for client_name in (set(client_settings)

3221

2648

- set(old_client_settings)):

3222

2649

clients_data[client_name] = client_settings[client_name]

3223

2650

3224

2651

# Create all client objects

3225

for client_name, client in clients_data.items():

2652

for client_name, client in clients_data.iteritems():

3226

2653

tcp_server.clients[client_name] = client_class(

3227

name=client_name,

3228

settings=client,

3229

server_settings=server_settings)

3230

2654

name = client_name, settings = client,

2655

server_settings = server_settings)

2656

3231

2657

if not tcp_server.clients:

3232

2658

logger.warning("No clients defined")

3233

2659

3234

2660

if not foreground:

3235

2661

if pidfile is not None:

3236

pid = os.getpid()

3237

2662

try:

3238

2663

with pidfile:

3239

print(pid, file=pidfile)

2664

pid = os.getpid()

2665

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

3240

2666

except IOError:

3241

2667

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

3242

2668

pidfilename, pid)

3243

2669

del pidfile

3244

2670

del pidfilename

3245

3246

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

3247

GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,

3248

lambda: main_loop.quit() and False)

3249

2671

2672

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

2673

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

2674

3250

2675

if use_dbus:

3251

3252

@alternate_dbus_interfaces(

3253

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

3254

class MandosDBusService(DBusObjectWithObjectManager):

2676

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

2677

"se.bsnet.fukt.Mandos"})

2678

class MandosDBusService(DBusObjectWithProperties):

3255

2679

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

3256

3257

2680

def __init__(self):

3258

2681

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

3259

3260

2682

_interface = "se.recompile.Mandos"

3261

2683

2684

@dbus_interface_annotations(_interface)

2685

def _foo(self):

2686

return { "org.freedesktop.DBus.Property"

2687

".EmitsChangedSignal":

2688

"false"}

2689

3262

2690

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

3263

2691

def ClientAdded(self, objpath):

3264

2692

"D-Bus signal"

3265

2693

pass

3266

2694

3267

2695

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

3268

2696

def ClientNotFound(self, fingerprint, address):

3269

2697

"D-Bus signal"

3270

2698

pass

3271

3272

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

3273

"true"})

2699

3274

2700

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

3275

2701

def ClientRemoved(self, objpath, name):

3276

2702

"D-Bus signal"

3277

2703

pass

3278

3279

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

3280

"true"})

2704

3281

2705

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

3282

2706

def GetAllClients(self):

3283

2707

"D-Bus method"

3284

return dbus.Array(c.dbus_object_path for c in

3285

tcp_server.clients.values())

3286

3287

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

3288

"true"})

2708

return dbus.Array(c.dbus_object_path

2709

for c in

2710

tcp_server.clients.itervalues())

2711

3289

2712

@dbus.service.method(_interface,

3290

2713

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

3291

2714

def GetAllClientsWithProperties(self):

3292

2715

"D-Bus method"

3293

2716

return dbus.Dictionary(

3294

{c.dbus_object_path: c.GetAll(

3295

"se.recompile.Mandos.Client")

3296

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

2717

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

2718

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

3297

2719

signature="oa{sv}")

3298

2720

3299

2721

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

3300

2722

def RemoveClient(self, object_path):

3301

2723

"D-Bus method"

3302

for c in tcp_server.clients.values():

2724

for c in tcp_server.clients.itervalues():

3303

2725

if c.dbus_object_path == object_path:

3304

2726

del tcp_server.clients[c.name]

3305

2727

c.remove_from_connection()

3306

# Don't signal the disabling

2728

# Don't signal anything except ClientRemoved

3307

2729

c.disable(quiet=True)

3308

# Emit D-Bus signal for removal

3309

self.client_removed_signal(c)

2730

# Emit D-Bus signal

2731

self.ClientRemoved(object_path, c.name)

3310

2732

return

3311

2733

raise KeyError(object_path)

3312

2734

3313

2735

del _interface

3314

3315

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

3316

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

3317

def GetManagedObjects(self):

3318

"""D-Bus method"""

3319

return dbus.Dictionary(

3320

{client.dbus_object_path:

3321

dbus.Dictionary(

3322

{interface: client.GetAll(interface)

3323

for interface in

3324

client._get_all_interface_names()})

3325

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

3326

3327

def client_added_signal(self, client):

3328

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

3329

if use_dbus:

3330

# New standard signal

3331

self.InterfacesAdded(

3332

client.dbus_object_path,

3333

dbus.Dictionary(

3334

{interface: client.GetAll(interface)

3335

for interface in

3336

client._get_all_interface_names()}))

3337

# Old signal

3338

self.ClientAdded(client.dbus_object_path)

3339

3340

def client_removed_signal(self, client):

3341

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

3342

if use_dbus:

3343

# New standard signal

3344

self.InterfacesRemoved(

3345

client.dbus_object_path,

3346

client._get_all_interface_names())

3347

# Old signal

3348

self.ClientRemoved(client.dbus_object_path,

3349

client.name)

3350

2736

3351

2737

mandos_dbus_service = MandosDBusService()

3352

3353

# Save modules to variables to exempt the modules from being

3354

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

3355

mp = multiprocessing

3356

wn = wnull

3357

2738

3358

2739

def cleanup():

3359

2740

"Cleanup function; run on exit"

3360

if zeroconf:

3361

service.cleanup()

3362

3363

mp.active_children()

3364

wn.close()

2741

service.cleanup()

2742

2743

multiprocessing.active_children()

2744

wnull.close()

3365

2745

if not (tcp_server.clients or client_settings):

3366

2746

return

3367

2747

3368

2748

# Store client before exiting. Secrets are encrypted with key

3369

2749

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

3370

2750

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

3371

2751

clients = {}

3372

2752

with PGPEngine() as pgp:

3373

for client in tcp_server.clients.values():

2753

for client in tcp_server.clients.itervalues():

3374

2754

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

3375

2755

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

3376

2756

key)

3377

2757

client_dict = {}

3378

2758

3379

2759

# A list of attributes that can not be pickled

3380

2760

# + secret.

3381

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

3382

"checker", "server_settings"}

3383

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

3384

.Object):

2761

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

2762

"checker", "server_settings"))

2763

for name, typ in (inspect.getmembers

2764

(dbus.service.Object)):

3385

2765

exclude.add(name)

3386

2766

3387

2767

client_dict["encrypted_secret"] = (client

3388

2768

.encrypted_secret)

3389

2769

for attr in client.client_structure:

3390

2770

if attr not in exclude:

3391

2771

client_dict[attr] = getattr(client, attr)

3392

2772

3393

2773

clients[client.name] = client_dict

3394

2774

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

3395

2775

3396

2776

try:

3397

with tempfile.NamedTemporaryFile(

3398

mode='wb',

3399

suffix=".pickle",

3400

prefix='clients-',

3401

dir=os.path.dirname(stored_state_path),

3402

delete=False) as stored_state:

3403

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

3404

protocol=2)

3405

tempname = stored_state.name

2777

with (tempfile.NamedTemporaryFile

2778

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

2779

dir=os.path.dirname(stored_state_path),

2780

delete=False)) as stored_state:

2781

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

2782

tempname=stored_state.name

3406

2783

os.rename(tempname, stored_state_path)

3407

2784

except (IOError, OSError) as e:

3408

2785

if not debug:

3411

2788

except NameError:

3412

2789

pass

3413

2790

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

3414

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

2791

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

3415

2792

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

3416

2793

else:

3417

2794

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

3418

2795

exc_info=e)

3419

2796

raise

3420

2797

3421

2798

# Delete all clients, and settings from config

3422

2799

while tcp_server.clients:

3423

2800

name, client = tcp_server.clients.popitem()

3424

2801

if use_dbus:

3425

2802

client.remove_from_connection()

3426

# Don't signal the disabling

2803

# Don't signal anything except ClientRemoved

3427

2804

client.disable(quiet=True)

3428

# Emit D-Bus signal for removal

3429

2805

if use_dbus:

3430

mandos_dbus_service.client_removed_signal(client)

2806

# Emit D-Bus signal

2807

mandos_dbus_service.ClientRemoved(client

2808

.dbus_object_path,

2809

client.name)

3431

2810

client_settings.clear()

3432

2811

3433

2812

atexit.register(cleanup)

3434

3435

for client in tcp_server.clients.values():

2813

2814

for client in tcp_server.clients.itervalues():

3436

2815

if use_dbus:

3437

# Emit D-Bus signal for adding

3438

mandos_dbus_service.client_added_signal(client)

2816

# Emit D-Bus signal

2817

mandos_dbus_service.ClientAdded(client.dbus_object_path)

3439

2818

# Need to initiate checking of clients

3440

2819

if client.enabled:

3441

2820

client.init_checker()

3442

2821

3443

2822

tcp_server.enable()

3444

2823

tcp_server.server_activate()

3445

2824

3446

2825

# Find out what port we got

3447

if zeroconf:

3448

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

2826

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

3449

2827

if use_ipv6:

3450

2828

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

3451

2829

" flowinfo %d, scope_id %d",

3453

2831

else: # IPv4

3454

2832

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

3455

2833

*tcp_server.socket.getsockname())

3456

3457

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

3458

2834

2835

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

2836

3459

2837

try:

3460

if zeroconf:

3461

# From the Avahi example code

3462

try:

3463

service.activate()

3464

except dbus.exceptions.DBusException as error:

3465

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

3466

cleanup()

3467

sys.exit(1)

3468

# End of Avahi example code

3469

3470

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

3471

lambda *args, **kwargs:

3472

(tcp_server.handle_request

3473

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

3474

2838

# From the Avahi example code

2839

try:

2840

service.activate()

2841

except dbus.exceptions.DBusException as error:

2842

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

2843

cleanup()

2844

sys.exit(1)

2845

# End of Avahi example code

2846

2847

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

2848

lambda *args, **kwargs:

2849

(tcp_server.handle_request

2850

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

2851

3475

2852

logger.debug("Starting main loop")

3476

2853

main_loop.run()

3477

2854

except AvahiError as error:

3486

2863

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

3487

2864

cleanup()

3488

2865

3489

3490

2866

if __name__ == '__main__':

3491

2867

main()