/mandos/trunk : revision 713

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#!/usr/bin/python

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

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#

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#

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

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#

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#

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

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# service publisher, downloaded from

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

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

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

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

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#

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#

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# Everything else is

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#

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#

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

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

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

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

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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

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# GNU General Public License for more details.

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#

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#

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

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# along with this program. If not, see

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

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#

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#

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

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#

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#

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from __future__ import (division, absolute_import, print_function,

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unicode_literals)

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try:

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from future_builtins import *

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except ImportError:

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pass

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from future_builtins import *

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try:

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import SocketServer as socketserver

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except ImportError:

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import socketserver

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import SocketServer as socketserver

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import socket

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import argparse

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import datetime

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import errno

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try:

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import ConfigParser as configparser

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except ImportError:

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import configparser

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import gnutls.crypto

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import gnutls.connection

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import gnutls.errors

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import gnutls.library.functions

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import gnutls.library.constants

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import gnutls.library.types

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import ConfigParser as configparser

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import sys

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import re

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import os

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import struct

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import fcntl

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import functools

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try:

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import cPickle as pickle

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except ImportError:

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import pickle

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import cPickle as pickle

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import multiprocessing

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import types

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import binascii

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import tempfile

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import itertools

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import collections

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import codecs

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import dbus

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import dbus.service

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from gi.repository import GLib

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import gobject

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import avahi

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from dbus.mainloop.glib import DBusGMainLoop

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import ctypes

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import ctypes.util

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import xml.dom.minidom

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import inspect

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# Try to find the value of SO_BINDTODEVICE:

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try:

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

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

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SO_BINDTODEVICE = socket.SO_BINDTODEVICE

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except AttributeError:

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try:

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# This is where SO_BINDTODEVICE was up to and including Python

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# 2.6, and also 3.2:

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from IN import SO_BINDTODEVICE

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except ImportError:

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

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# Try running the C preprocessor:

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try:

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

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"/dev/stdin"],

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stdin=subprocess.PIPE,

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stdout=subprocess.PIPE)

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stdout = cc.communicate(

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

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

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except (OSError, ValueError, IndexError):

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# No value found

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SO_BINDTODEVICE = None

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if sys.version_info.major == 2:

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str = unicode

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version = "1.7.13"

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SO_BINDTODEVICE = None

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version = "1.6.6"

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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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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 = (logging.handlers.SysLogHandler

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(facility =

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logging.handlers.SysLogHandler.LOG_DAEMON,

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

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syslogger.setFormatter(logging.Formatter

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

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' %(message)s'))

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logger.addHandler(syslogger)

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if debug:

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console = logging.StreamHandler()

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

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class PGPEngine(object):

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"""A simple class for OpenPGP symmetric encryption & decryption"""

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def __init__(self):

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self.tempdir = tempfile.mkdtemp(prefix="mandos-")

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self.gpg = "gpg"

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try:

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output = subprocess.check_output(["gpgconf"])

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for line in output.splitlines():

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name, text, path = line.split(b":")

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if name == "gpg":

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self.gpg = path

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break

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except OSError as e:

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if e.errno != errno.ENOENT:

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raise

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self.gnupgargs = ['--batch',

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'--homedir', self.tempdir,

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'--home', self.tempdir,

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'--force-mdc',

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'--quiet']

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

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

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

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'--quiet',

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'--no-use-agent']

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def __enter__(self):

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return self

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

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self._cleanup()

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return False

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def __del__(self):

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self._cleanup()

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def _cleanup(self):

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if self.tempdir is not None:

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# Delete contents of tempdir

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

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topdown=False):

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topdown = False):

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for filename in files:

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

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for dirname in dirs:

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# Remove tempdir

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os.rmdir(self.tempdir)

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self.tempdir = None

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def password_encode(self, password):

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

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

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

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

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return encoded

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def encrypt(self, data, password):

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passphrase = self.password_encode(password)

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with tempfile.NamedTemporaryFile(

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dir=self.tempdir) as passfile:

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with tempfile.NamedTemporaryFile(dir=self.tempdir

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) as passfile:

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passfile.write(passphrase)

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passfile.flush()

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

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

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'--passphrase-file',

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passfile.name]

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+ self.gnupgargs,

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stdin=subprocess.PIPE,

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stdout=subprocess.PIPE,

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stderr=subprocess.PIPE)

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

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stdin = subprocess.PIPE,

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stdout = subprocess.PIPE,

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stderr = subprocess.PIPE)

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

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if proc.returncode != 0:

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raise PGPError(err)

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return ciphertext

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def decrypt(self, data, password):

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passphrase = self.password_encode(password)

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with tempfile.NamedTemporaryFile(

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dir=self.tempdir) as passfile:

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with tempfile.NamedTemporaryFile(dir = self.tempdir

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) as passfile:

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passfile.write(passphrase)

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passfile.flush()

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

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

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'--passphrase-file',

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passfile.name]

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+ self.gnupgargs,

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stdin=subprocess.PIPE,

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stdout=subprocess.PIPE,

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stderr=subprocess.PIPE)

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

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stdin = subprocess.PIPE,

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stdout = subprocess.PIPE,

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stderr = subprocess.PIPE)

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decrypted_plaintext, err = proc.communicate(input

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= data)

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if proc.returncode != 0:

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raise PGPError(err)

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return decrypted_plaintext

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# Pretend that we have an Avahi module

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class Avahi(object):

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

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

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

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

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PROTO_INET = 0 # avahi-common/address.h

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PROTO_INET6 = 1 # avahi-common/address.h

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DBUS_NAME = "org.freedesktop.Avahi"

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DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"

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DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"

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DBUS_PATH_SERVER = "/"

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def string_array_to_txt_array(self, t):

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

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

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ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h

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ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h

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ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h

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SERVER_INVALID = 0 # avahi-common/defs.h

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SERVER_REGISTERING = 1 # avahi-common/defs.h

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SERVER_RUNNING = 2 # avahi-common/defs.h

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SERVER_COLLISION = 3 # avahi-common/defs.h

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SERVER_FAILURE = 4 # avahi-common/defs.h

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avahi = Avahi()

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302

303

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class AvahiError(Exception):

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

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self.value = value

306

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

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**kwargs)

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

228

def __unicode__(self):

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return unicode(repr(self.value))

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class AvahiServiceError(AvahiError):

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pass

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class AvahiGroupError(AvahiError):

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pass

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class AvahiService(object):

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"""An Avahi (Zeroconf) service.

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240

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Attributes:

322

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

323

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Used to optionally bind to the specified interface.

335

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server: D-Bus Server

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bus: dbus.SystemBus()

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"""

338

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def __init__(self,

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interface=avahi.IF_UNSPEC,

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name=None,

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servicetype=None,

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port=None,

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TXT=None,

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domain="",

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host="",

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max_renames=32768,

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protocol=avahi.PROTO_UNSPEC,

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bus=None):

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

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

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

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protocol = avahi.PROTO_UNSPEC, bus = None):

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self.interface = interface

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self.name = name

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self.type = servicetype

361

274

self.server = None

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self.bus = bus

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self.entry_group_state_changed_match = None

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def rename(self, remove=True):

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278

def rename(self):

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

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280

if self.rename_count >= self.max_renames:

368

281

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

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" after %i retries, exiting.",

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self.rename_count)

371

284

raise AvahiServiceError("Too many renames")

372

self.name = str(

373

self.server.GetAlternativeServiceName(self.name))

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self.rename_count += 1

285

self.name = unicode(self.server

286

.GetAlternativeServiceName(self.name))

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

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288

self.name)

377

if remove:

378

self.remove()

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self.remove()

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try:

380

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self.add()

381

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except dbus.exceptions.DBusException as error:

382

if (error.get_dbus_name()

383

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

384

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

385

return self.rename(remove=False)

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else:

387

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

388

self.cleanup()

389

os._exit(1)

390

293

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

294

self.cleanup()

295

os._exit(1)

296

self.rename_count += 1

297

391

298

def remove(self):

392

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

393

300

if self.entry_group_state_changed_match is not None:

395

302

self.entry_group_state_changed_match = None

396

303

if self.group is not None:

397

304

self.group.Reset()

398

305

399

306

def add(self):

400

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

401

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self.remove()

418

325

dbus.UInt16(self.port),

419

326

avahi.string_array_to_txt_array(self.TXT))

420

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self.group.Commit()

421

328

422

329

def entry_group_state_changed(self, state, error):

423

330

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

424

331

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

425

332

426

333

if state == avahi.ENTRY_GROUP_ESTABLISHED:

427

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logger.debug("Zeroconf service established.")

428

335

elif state == avahi.ENTRY_GROUP_COLLISION:

430

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self.rename()

431

338

elif state == avahi.ENTRY_GROUP_FAILURE:

432

339

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

433

str(error))

434

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

435

340

unicode(error))

341

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

342

.format(error))

343

436

344

def cleanup(self):

437

345

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

438

346

if self.group is not None:

443

351

pass

444

352

self.group = None

445

353

self.remove()

446

354

447

355

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

448

356

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

449

357

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

}

358

bad_states = { avahi.SERVER_INVALID:

359

"Zeroconf server invalid",

360

avahi.SERVER_REGISTERING: None,

361

avahi.SERVER_COLLISION:

362

"Zeroconf server name collision",

363

avahi.SERVER_FAILURE:

364

"Zeroconf server failure" }

456

365

if state in bad_states:

457

366

if bad_states[state] is not None:

458

367

if error is None:

461

370

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

462

371

self.cleanup()

463

372

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)

373

self.add()

476

374

else:

477

375

if error is None:

478

376

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

479

377

else:

480

378

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

481

379

482

380

def activate(self):

483

381

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

484

382

if self.server is None:

488

386

follow_name_owner_changes=True),

489

387

avahi.DBUS_INTERFACE_SERVER)

490

388

self.server.connect_to_signal("StateChanged",

491

self.server_state_changed)

389

self.server_state_changed)

492

390

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

493

391

494

392

495

393

class AvahiServiceToSyslog(AvahiService):

496

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

394

def rename(self):

497

395

"""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)))

396

ret = AvahiService.rename(self)

397

syslogger.setFormatter(logging.Formatter

398

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

399

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

400

.format(self.name)))

502

401

return ret

503

402

504

403

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()

404

def timedelta_to_milliseconds(td):

405

"Convert a datetime.timedelta() to milliseconds"

406

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

407

+ (td.seconds * 1000)

408

+ (td.microseconds // 1000))

777

409

778

410

779

411

class Client(object):

780

412

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

781

413

782

414

Attributes:

783

415

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

784

416

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

786

418

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

787

419

to see if the client lives.

788

420

'None' if no process is running.

789

checker_callback_tag: a GLib event source tag, or None

421

checker_callback_tag: a gobject event source tag, or None

790

422

checker_command: string; External command which is run to check

791

423

if client lives. %() expansions are done at

792

424

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

793

425

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

794

checker_initiator_tag: a GLib event source tag, or None

426

checker_initiator_tag: a gobject event source tag, or None

795

427

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

796

428

client_structure: Object describing what attributes a client has

797

429

and is used for storing the client at exit

798

430

current_checker_command: string; current running checker_command

799

disable_initiator_tag: a GLib event source tag, or None

431

disable_initiator_tag: a gobject event source tag, or None

800

432

enabled: bool()

801

433

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

802

434

uniquely identify the client

807

439

last_checker_status: integer between 0 and 255 reflecting exit

808

440

status of last checker. -1 reflects crashed

809

441

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

442

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

813

443

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

814

444

D-Bus identifiers

821

451

disabled, or None

822

452

server_settings: The server_settings dict from main()

823

453

"""

824

454

825

455

runtime_expansions = ("approval_delay", "approval_duration",

826

456

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

827

457

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

828

458

"last_approval_request", "last_checked_ok",

829

459

"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

460

client_defaults = { "timeout": "PT5M",

461

"extended_timeout": "PT15M",

462

"interval": "PT2M",

463

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

464

"host": "",

465

"approval_delay": "PT0S",

466

"approval_duration": "PT1S",

467

"approved_by_default": "True",

468

"enabled": "True",

469

}

470

471

def timeout_milliseconds(self):

472

"Return the 'timeout' attribute in milliseconds"

473

return timedelta_to_milliseconds(self.timeout)

474

475

def extended_timeout_milliseconds(self):

476

"Return the 'extended_timeout' attribute in milliseconds"

477

return timedelta_to_milliseconds(self.extended_timeout)

478

479

def interval_milliseconds(self):

480

"Return the 'interval' attribute in milliseconds"

481

return timedelta_to_milliseconds(self.interval)

482

483

def approval_delay_milliseconds(self):

484

return timedelta_to_milliseconds(self.approval_delay)

485

842

486

@staticmethod

843

487

def config_parser(config):

844

488

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

851

495

for client_name in config.sections():

852

496

section = dict(config.items(client_name))

853

497

client = settings[client_name] = {}

854

498

855

499

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

856

500

# Reformat values from string types to Python types

857

501

client["approved_by_default"] = config.getboolean(

858

502

client_name, "approved_by_default")

859

503

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

860

504

"enabled")

861

862

# Uppercase and remove spaces from fingerprint for later

863

# comparison purposes with return value from the

864

# fingerprint() function

505

865

506

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

866

507

.replace(" ", ""))

867

508

if "secret" in section:

868

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

869

.encode("utf-8"),

870

"base64")

509

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

871

510

elif "secfile" in section:

872

511

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

873

512

(section["secfile"])),

874

513

"rb") as secfile:

875

514

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

876

515

else:

877

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

516

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

878

517

.format(section))

879

518

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

880

519

client["extended_timeout"] = string_to_delta(

888

527

client["last_approval_request"] = None

889

528

client["last_checked_ok"] = None

890

529

client["last_checker_status"] = -2

891

530

892

531

return settings

893

894

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

532

533

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

895

534

self.name = name

896

535

if server_settings is None:

897

536

server_settings = {}

898

537

self.server_settings = server_settings

899

538

# adding all client settings

900

for setting, value in settings.items():

539

for setting, value in settings.iteritems():

901

540

setattr(self, setting, value)

902

541

903

542

if self.enabled:

904

543

if not hasattr(self, "last_enabled"):

905

544

self.last_enabled = datetime.datetime.utcnow()

909

548

else:

910

549

self.last_enabled = None

911

550

self.expires = None

912

551

913

552

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

553

# Uppercase and remove spaces from fingerprint for later

554

# comparison purposes with return value from the fingerprint()

555

# function

914

556

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

915

557

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

916

558

datetime.datetime.utcnow())

917

559

918

560

# attributes specific for this server instance

919

561

self.checker = None

920

562

self.checker_initiator_tag = None

923

565

self.current_checker_command = None

924

566

self.approved = None

925

567

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()

568

self.changedstate = (multiprocessing_manager

569

.Condition(multiprocessing_manager

570

.Lock()))

571

self.client_structure = [attr for attr in

572

self.__dict__.iterkeys()

930

573

if not attr.startswith("_")]

931

574

self.client_structure.append("client_structure")

932

933

for name, t in inspect.getmembers(

934

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

575

576

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

577

lambda obj:

578

isinstance(obj,

579

property)):

935

580

if not name.startswith("_"):

936

581

self.client_structure.append(name)

937

582

938

583

# Send notice to process children that client state has changed

939

584

def send_changedstate(self):

940

585

with self.changedstate:

941

586

self.changedstate.notify_all()

942

587

943

588

def enable(self):

944

589

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

945

590

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

950

595

self.last_enabled = datetime.datetime.utcnow()

951

596

self.init_checker()

952

597

self.send_changedstate()

953

598

954

599

def disable(self, quiet=True):

955

600

"""Disable this client."""

956

601

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

958

603

if not quiet:

959

604

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

960

605

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

961

GLib.source_remove(self.disable_initiator_tag)

606

gobject.source_remove(self.disable_initiator_tag)

962

607

self.disable_initiator_tag = None

963

608

self.expires = None

964

609

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

965

GLib.source_remove(self.checker_initiator_tag)

610

gobject.source_remove(self.checker_initiator_tag)

966

611

self.checker_initiator_tag = None

967

612

self.stop_checker()

968

613

self.enabled = False

969

614

if not quiet:

970

615

self.send_changedstate()

971

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

616

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

972

617

return False

973

618

974

619

def __del__(self):

975

620

self.disable()

976

621

977

622

def init_checker(self):

978

623

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

979

624

# and every interval from then on.

980

625

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)

626

gobject.source_remove(self.checker_initiator_tag)

627

self.checker_initiator_tag = (gobject.timeout_add

628

(self.interval_milliseconds(),

629

self.start_checker))

985

630

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

986

631

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)

632

gobject.source_remove(self.disable_initiator_tag)

633

self.disable_initiator_tag = (gobject.timeout_add

634

(self.timeout_milliseconds(),

635

self.disable))

990

636

# Also start a new checker *right now*.

991

637

self.start_checker()

992

993

def checker_callback(self, source, condition, connection,

994

command):

638

639

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

995

640

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

996

641

self.checker_callback_tag = None

997

642

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

643

if os.WIFEXITED(condition):

644

self.last_checker_status = os.WEXITSTATUS(condition)

1005

645

if self.last_checker_status == 0:

1006

646

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

1007

647

vars(self))

1008

648

self.checked_ok()

1009

649

else:

1010

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

650

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

651

vars(self))

1011

652

else:

1012

653

self.last_checker_status = -1

1013

self.last_checker_signal = -returncode

1014

654

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

1015

655

vars(self))

1016

return False

1017

656

1018

657

def checked_ok(self):

1019

658

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

1020

659

self.last_checked_ok = datetime.datetime.utcnow()

1021

660

self.last_checker_status = 0

1022

self.last_checker_signal = None

1023

661

self.bump_timeout()

1024

662

1025

663

def bump_timeout(self, timeout=None):

1026

664

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

1027

665

if timeout is None:

1028

666

timeout = self.timeout

1029

667

if self.disable_initiator_tag is not None:

1030

GLib.source_remove(self.disable_initiator_tag)

668

gobject.source_remove(self.disable_initiator_tag)

1031

669

self.disable_initiator_tag = None

1032

670

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

1033

self.disable_initiator_tag = GLib.timeout_add(

1034

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

671

self.disable_initiator_tag = (gobject.timeout_add

672

(timedelta_to_milliseconds

673

(timeout), self.disable))

1035

674

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

1036

675

1037

676

def need_approval(self):

1038

677

self.last_approval_request = datetime.datetime.utcnow()

1039

678

1040

679

def start_checker(self):

1041

680

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

1042

681

1043

682

If a checker already exists, leave it running and do

1044

683

nothing."""

1045

684

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

1050

689

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

1051

690

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

1052

691

# 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

692

693

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

694

try:

695

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

696

except AttributeError:

697

pass

698

except OSError as error:

699

if error.errno != errno.ECHILD:

700

raise

701

else:

702

if pid:

703

logger.warning("Checker was a zombie")

704

gobject.source_remove(self.checker_callback_tag)

705

self.checker_callback(pid, status,

706

self.current_checker_command)

1058

707

# Start a new checker if needed

1059

708

if self.checker is None:

1060

709

# Escape attributes for the shell

1061

escaped_attrs = {

1062

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

1063

for attr in self.runtime_expansions}

710

escaped_attrs = dict(

711

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

712

for attr in

713

self.runtime_expansions)

1064

714

try:

1065

715

command = self.checker_command % escaped_attrs

1066

716

except TypeError as error:

1067

717

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

1068

self.checker_command,

718

self.checker_command, exc_info=error)

719

return True # Try again later

720

self.current_checker_command = command

721

try:

722

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

723

command, self.name)

724

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

725

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

726

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

727

# always replaced by /dev/null.)

728

# The exception is when not debugging but nevertheless

729

# running in the foreground; use the previously

730

# created wnull.

731

popen_args = {}

732

if (not self.server_settings["debug"]

733

and self.server_settings["foreground"]):

734

popen_args.update({"stdout": wnull,

735

"stderr": wnull })

736

self.checker = subprocess.Popen(command,

737

close_fds=True,

738

shell=True, cwd="/",

739

**popen_args)

740

except OSError as error:

741

logger.error("Failed to start subprocess",

1069

742

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

743

return True

744

self.checker_callback_tag = (gobject.child_watch_add

745

(self.checker.pid,

746

self.checker_callback,

747

data=command))

748

# The checker may have completed before the gobject

749

# watch was added. Check for this.

750

try:

751

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

752

except OSError as error:

753

if error.errno == errno.ECHILD:

754

# This should never happen

755

logger.error("Child process vanished",

756

exc_info=error)

757

return True

758

raise

759

if pid:

760

gobject.source_remove(self.checker_callback_tag)

761

self.checker_callback(pid, status, command)

762

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

1098

763

return True

1099

764

1100

765

def stop_checker(self):

1101

766

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

1102

767

if self.checker_callback_tag:

1103

GLib.source_remove(self.checker_callback_tag)

768

gobject.source_remove(self.checker_callback_tag)

1104

769

self.checker_callback_tag = None

1105

770

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

1106

771

return

1107

772

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

1108

self.checker.terminate()

773

try:

774

self.checker.terminate()

775

#time.sleep(0.5)

776

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

777

# self.checker.kill()

778

except OSError as error:

779

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

780

raise

1109

781

self.checker = None

1110

782

1111

783

1112

def dbus_service_property(dbus_interface,

1113

signature="v",

1114

access="readwrite",

1115

byte_arrays=False):

784

def dbus_service_property(dbus_interface, signature="v",

785

access="readwrite", byte_arrays=False):

1116

786

"""Decorators for marking methods of a DBusObjectWithProperties to

1117

787

become properties on the D-Bus.

1118

788

1119

789

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

1120

790

and with one argument by "Set".

1121

791

1122

792

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

1123

793

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

1124

794

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

1127

797

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

1128

798

if byte_arrays and signature != "ay":

1129

799

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

1130

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

1131

800

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

1132

801

def decorator(func):

1133

802

func._dbus_is_property = True

1134

803

func._dbus_interface = dbus_interface

1137

806

func._dbus_name = func.__name__

1138

807

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

1139

808

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

1140

func._dbus_get_args_options = {'byte_arrays': byte_arrays}

809

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

1141

810

return func

1142

1143

811

return decorator

1144

812

1145

813

1146

814

def dbus_interface_annotations(dbus_interface):

1147

815

"""Decorator for marking functions returning interface annotations

1148

816

1149

817

Usage:

1150

818

1151

819

@dbus_interface_annotations("org.example.Interface")

1152

820

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

1153

821

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

1154

822

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

1155

823

"false"}

1156

824

"""

1157

1158

825

def decorator(func):

1159

826

func._dbus_is_interface = True

1160

827

func._dbus_interface = dbus_interface

1161

828

func._dbus_name = dbus_interface

1162

829

return func

1163

1164

830

return decorator

1165

831

1166

832

1167

833

def dbus_annotations(annotations):

1168

834

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

1169

835

Usage:

1170

1171

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

1172

"org.freedesktop.DBus.Property."

1173

"EmitsChangedSignal": "false"})

836

1174

837

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

1175

838

access="r")

839

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

840

"org.freedesktop.DBus.Property."

841

"EmitsChangedSignal": "false"})

1176

842

def Property_dbus_property(self):

1177

843

return dbus.Boolean(False)

1178

1179

See also the DBusObjectWithAnnotations class.

1180

844

"""

1181

1182

845

def decorator(func):

1183

846

func._dbus_annotations = annotations

1184

847

return func

1185

1186

848

return decorator

1187

849

1188

850

1189

851

class DBusPropertyException(dbus.exceptions.DBusException):

1190

852

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

1191

853

"""

1192

pass

854

def __unicode__(self):

855

return unicode(str(self))

1193

856

1194

857

1195

858

class DBusPropertyAccessException(DBusPropertyException):

1204

867

pass

1205

868

1206

869

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.

870

class DBusObjectWithProperties(dbus.service.Object):

871

"""A D-Bus object with properties.

872

873

Classes inheriting from this can use the dbus_service_property

874

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

875

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

1212

876

"""

1213

877

1214

878

@staticmethod

1215

879

def _is_dbus_thing(thing):

1216

880

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

1217

881

1218

882

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

1219

883

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

1220

884

"""

1221

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

885

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

1222

886

False)

1223

887

1224

888

def _get_all_dbus_things(self, thing):

1225

889

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

1226

890

"""

1227

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

891

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

892

name),

1228

893

athing.__get__(self))

1229

894

for cls in self.__class__.__mro__

1230

895

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

896

inspect.getmembers(cls,

897

self._is_dbus_thing(thing)))

898

1304

899

def _get_dbus_property(self, interface_name, property_name):

1305

900

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

1306

901

property with the specified name and interface.

1307

902

"""

1308

for cls in self.__class__.__mro__:

1309

for name, value in inspect.getmembers(

1310

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

903

for cls in self.__class__.__mro__:

904

for name, value in (inspect.getmembers

905

(cls,

906

self._is_dbus_thing("property"))):

1311

907

if (value._dbus_name == property_name

1312

908

and value._dbus_interface == interface_name):

1313

909

return value.__get__(self)

1314

910

1315

911

# 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",

912

raise DBusPropertyNotFound(self.dbus_object_path + ":"

913

+ interface_name + "."

914

+ property_name)

915

916

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

1330

917

out_signature="v")

1331

918

def Get(self, interface_name, property_name):

1332

919

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

1338

925

if not hasattr(value, "variant_level"):

1339

926

return value

1340

927

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

1341

928

1342

929

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

1343

930

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

1344

931

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

1351

938

# signatures other than "ay".

1352

939

if prop._dbus_signature != "ay":

1353

940

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

1354

"'ay' signature {!r}"

941

"'ay' signature {0!r}"

1355

942

.format(prop._dbus_signature))

1356

943

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

1357

944

for byte in value))

1358

945

prop(value)

1359

1360

@dbus.service.method(dbus.PROPERTIES_IFACE,

1361

in_signature="s",

946

947

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

1362

948

out_signature="a{sv}")

1363

949

def GetAll(self, interface_name):

1364

950

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

1365

951

standard.

1366

952

1367

953

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

1368

954

"""

1369

955

properties = {}

1379

965

if not hasattr(value, "variant_level"):

1380

966

properties[name] = value

1381

967

continue

1382

properties[name] = type(value)(

1383

value, variant_level=value.variant_level + 1)

968

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

969

value.variant_level+1)

1384

970

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

971

1394

972

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1395

973

out_signature="s",

1396

974

path_keyword='object_path',

1397

975

connection_keyword='connection')

1398

976

def Introspect(self, object_path, connection):

1399

977

"""Overloading of standard D-Bus method.

1400

978

1401

979

Inserts property tags and interface annotation tags.

1402

980

"""

1403

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1404

object_path,

1405

connection)

981

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

982

connection)

1406

983

try:

1407

984

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

1408

1409

985

def make_tag(document, name, prop):

1410

986

e = document.createElement("property")

1411

987

e.setAttribute("name", name)

1412

988

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

1413

989

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

1414

990

return e

1415

1416

991

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

1417

992

# Add property tags

1418

993

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

1421

996

if prop._dbus_interface

1422

997

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

1423

998

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)

999

# Add annotation tags

1000

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

1001

for tag in if_tag.getElementsByTagName(typ):

1002

annots = dict()

1003

for name, prop in (self.

1004

_get_all_dbus_things(typ)):

1005

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

1006

and prop._dbus_interface

1007

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

1008

annots.update(getattr

1009

(prop,

1010

"_dbus_annotations",

1011

{}))

1012

for name, value in annots.iteritems():

1013

ann_tag = document.createElement(

1014

"annotation")

1015

ann_tag.setAttribute("name", name)

1016

ann_tag.setAttribute("value", value)

1017

tag.appendChild(ann_tag)

1018

# Add interface annotation tags

1019

for annotation, value in dict(

1020

itertools.chain.from_iterable(

1021

annotations().iteritems()

1022

for name, annotations in

1023

self._get_all_dbus_things("interface")

1024

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

1025

)).iteritems():

1026

ann_tag = document.createElement("annotation")

1027

ann_tag.setAttribute("name", annotation)

1028

ann_tag.setAttribute("value", value)

1029

if_tag.appendChild(ann_tag)

1440

1030

# Add the names to the return values for the

1441

1031

# "org.freedesktop.DBus.Properties" methods

1442

1032

if (if_tag.getAttribute("name")

1460

1050

exc_info=error)

1461

1051

return xmlstring

1462

1052

1463

try:

1464

dbus.OBJECT_MANAGER_IFACE

1465

except AttributeError:

1466

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

1467

1468

1469

class DBusObjectWithObjectManager(DBusObjectWithAnnotations):

1470

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

1471

1472

Classes inheriting from this exposes the standard

1473

GetManagedObjects call and the InterfacesAdded and

1474

InterfacesRemoved signals on the standard

1475

"org.freedesktop.DBus.ObjectManager" interface.

1476

1477

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

1478

manually.

1479

"""

1480

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

1481

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

1482

def GetManagedObjects(self):

1483

"""This function must be overridden"""

1484

raise NotImplementedError()

1485

1486

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,

1487

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

1488

def InterfacesAdded(self, object_path, interfaces_and_properties):

1489

pass

1490

1491

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

1492

def InterfacesRemoved(self, object_path, interfaces):

1493

pass

1494

1495

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1496

out_signature="s",

1497

path_keyword='object_path',

1498

connection_keyword='connection')

1499

def Introspect(self, object_path, connection):

1500

"""Overloading of standard D-Bus method.

1501

1502

Override return argument name of GetManagedObjects to be

1503

"objpath_interfaces_and_properties"

1504

"""

1505

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1506

object_path,

1507

connection)

1508

try:

1509

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

1510

1511

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

1512

# Fix argument name for the GetManagedObjects method

1513

if (if_tag.getAttribute("name")

1514

== dbus.OBJECT_MANAGER_IFACE):

1515

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

1516

if (cn.getAttribute("name")

1517

== "GetManagedObjects"):

1518

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

1519

if (arg.getAttribute("direction")

1520

== "out"):

1521

arg.setAttribute(

1522

"name",

1523

"objpath_interfaces"

1524

"_and_properties")

1525

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

1526

document.unlink()

1527

except (AttributeError, xml.dom.DOMException,

1528

xml.parsers.expat.ExpatError) as error:

1529

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

1530

exc_info=error)

1531

return xmlstring

1532

1533

1053

1534

1054

def datetime_to_dbus(dt, variant_level=0):

1535

1055

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

1536

1056

if dt is None:

1537

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

1538

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

1057

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

1058

return dbus.String(dt.isoformat(),

1059

variant_level=variant_level)

1539

1060

1540

1061

1541

1062

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1543

1064

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

1544

1065

interface names according to the "alt_interface_names" mapping.

1545

1066

Usage:

1546

1067

1547

1068

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

1548

1069

"net.example.AlternateInterface"})

1549

1070

class SampleDBusObject(dbus.service.Object):

1550

1071

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

1551

1072

def SampleDBusMethod():

1552

1073

pass

1553

1074

1554

1075

The above "SampleDBusMethod" on "SampleDBusObject" will be

1555

1076

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

1556

1077

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

1557

1078

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

1558

1079

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

1559

1080

1560

1081

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

1561

1082

(from DBusObjectWithProperties) and interfaces (from the

1562

1083

dbus_interface_annotations decorator).

1563

1084

"""

1564

1565

1085

def wrapper(cls):

1566

1086

for orig_interface_name, alt_interface_name in (

1567

alt_interface_names.items()):

1087

alt_interface_names.iteritems()):

1568

1088

attr = {}

1569

1089

interface_names = set()

1570

1090

# Go though all attributes of the class

1572

1092

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

1573

1093

# with the wrong interface name

1574

1094

if (not hasattr(attribute, "_dbus_interface")

1575

or not attribute._dbus_interface.startswith(

1576

orig_interface_name)):

1095

or not attribute._dbus_interface

1096

.startswith(orig_interface_name)):

1577

1097

continue

1578

1098

# Create an alternate D-Bus interface name based on

1579

1099

# the current name

1580

alt_interface = attribute._dbus_interface.replace(

1581

orig_interface_name, alt_interface_name)

1100

alt_interface = (attribute._dbus_interface

1101

.replace(orig_interface_name,

1102

alt_interface_name))

1582

1103

interface_names.add(alt_interface)

1583

1104

# Is this a D-Bus signal?

1584

1105

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

1585

1106

# Extract the original non-method undecorated

1586

1107

# function by black magic

1587

if sys.version_info.major == 2:

1588

nonmethod_func = (dict(

1108

nonmethod_func = (dict(

1589

1109

zip(attribute.func_code.co_freevars,

1590

attribute.__closure__))

1591

["func"].cell_contents)

1592

else:

1593

nonmethod_func = (dict(

1594

zip(attribute.__code__.co_freevars,

1595

attribute.__closure__))

1596

["func"].cell_contents)

1110

attribute.__closure__))["func"]

1111

.cell_contents)

1597

1112

# Create a new, but exactly alike, function

1598

1113

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

1599

1114

# with the alternate D-Bus interface name

1600

new_function = copy_function(nonmethod_func)

1601

new_function = (dbus.service.signal(

1602

alt_interface,

1603

attribute._dbus_signature)(new_function))

1115

new_function = (dbus.service.signal

1116

(alt_interface,

1117

attribute._dbus_signature)

1118

(types.FunctionType(

1119

nonmethod_func.func_code,

1120

nonmethod_func.func_globals,

1121

nonmethod_func.func_name,

1122

nonmethod_func.func_defaults,

1123

nonmethod_func.func_closure)))

1604

1124

# Copy annotations, if any

1605

1125

try:

1606

new_function._dbus_annotations = dict(

1607

attribute._dbus_annotations)

1126

new_function._dbus_annotations = (

1127

dict(attribute._dbus_annotations))

1608

1128

except AttributeError:

1609

1129

pass

1610

1611

1130

# Define a creator of a function to call both the

1612

1131

# original and alternate functions, so both the

1613

1132

# original and alternate signals gets sent when

1616

1135

"""This function is a scope container to pass

1617

1136

func1 and func2 to the "call_both" function

1618

1137

outside of its arguments"""

1619

1620

@functools.wraps(func2)

1621

1138

def call_both(*args, **kwargs):

1622

1139

"""This function will emit two D-Bus

1623

1140

signals by calling func1 and func2"""

1624

1141

func1(*args, **kwargs)

1625

1142

func2(*args, **kwargs)

1626

# Make wrapper function look like a D-Bus

1627

# signal

1628

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

1629

if name.startswith("_dbus_"):

1630

setattr(call_both, name, attr)

1631

1632

1143

return call_both

1633

1144

# Create the "call_both" function and add it to

1634

1145

# the class

1639

1150

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

1640

1151

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

1641

1152

# to the class.

1642

attr[attrname] = (

1643

dbus.service.method(

1644

alt_interface,

1645

attribute._dbus_in_signature,

1646

attribute._dbus_out_signature)

1647

(copy_function(attribute)))

1153

attr[attrname] = (dbus.service.method

1154

(alt_interface,

1155

attribute._dbus_in_signature,

1156

attribute._dbus_out_signature)

1157

(types.FunctionType

1158

(attribute.func_code,

1159

attribute.func_globals,

1160

attribute.func_name,

1161

attribute.func_defaults,

1162

attribute.func_closure)))

1648

1163

# Copy annotations, if any

1649

1164

try:

1650

attr[attrname]._dbus_annotations = dict(

1651

attribute._dbus_annotations)

1165

attr[attrname]._dbus_annotations = (

1166

dict(attribute._dbus_annotations))

1652

1167

except AttributeError:

1653

1168

pass

1654

1169

# Is this a D-Bus property?

1657

1172

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

1658

1173

# property with the alternate D-Bus interface

1659

1174

# name. Add it to the class.

1660

attr[attrname] = (dbus_service_property(

1661

alt_interface, attribute._dbus_signature,

1662

attribute._dbus_access,

1663

attribute._dbus_get_args_options

1664

["byte_arrays"])

1665

(copy_function(attribute)))

1175

attr[attrname] = (dbus_service_property

1176

(alt_interface,

1177

attribute._dbus_signature,

1178

attribute._dbus_access,

1179

attribute

1180

._dbus_get_args_options

1181

["byte_arrays"])

1182

(types.FunctionType

1183

(attribute.func_code,

1184

attribute.func_globals,

1185

attribute.func_name,

1186

attribute.func_defaults,

1187

attribute.func_closure)))

1666

1188

# Copy annotations, if any

1667

1189

try:

1668

attr[attrname]._dbus_annotations = dict(

1669

attribute._dbus_annotations)

1190

attr[attrname]._dbus_annotations = (

1191

dict(attribute._dbus_annotations))

1670

1192

except AttributeError:

1671

1193

pass

1672

1194

# Is this a D-Bus interface?

1675

1197

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

1676

1198

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

1677

1199

# to the class.

1678

attr[attrname] = (

1679

dbus_interface_annotations(alt_interface)

1680

(copy_function(attribute)))

1200

attr[attrname] = (dbus_interface_annotations

1201

(alt_interface)

1202

(types.FunctionType

1203

(attribute.func_code,

1204

attribute.func_globals,

1205

attribute.func_name,

1206

attribute.func_defaults,

1207

attribute.func_closure)))

1681

1208

if deprecate:

1682

1209

# Deprecate all alternate interfaces

1683

iname = "_AlternateDBusNames_interface_annotation{}"

1210

iname="_AlternateDBusNames_interface_annotation{0}"

1684

1211

for interface_name in interface_names:

1685

1686

1212

@dbus_interface_annotations(interface_name)

1687

1213

def func(self):

1688

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

1689

"true"}

1214

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

1215

"true" }

1690

1216

# Find an unused name

1691

1217

for aname in (iname.format(i)

1692

1218

for i in itertools.count()):

1696

1222

if interface_names:

1697

1223

# Replace the class with a new subclass of it with

1698

1224

# methods, signals, etc. as created above.

1699

if sys.version_info.major == 2:

1700

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

1701

(cls, ), attr)

1702

else:

1703

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

1704

(cls, ), attr)

1225

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

1226

(cls,), attr)

1705

1227

return cls

1706

1707

1228

return wrapper

1708

1229

1709

1230

1710

1231

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

1711

"se.bsnet.fukt.Mandos"})

1232

"se.bsnet.fukt.Mandos"})

1712

1233

class ClientDBus(Client, DBusObjectWithProperties):

1713

1234

"""A Client class using D-Bus

1714

1235

1715

1236

Attributes:

1716

1237

dbus_object_path: dbus.ObjectPath

1717

1238

bus: dbus.SystemBus()

1718

1239

"""

1719

1240

1720

1241

runtime_expansions = (Client.runtime_expansions

1721

+ ("dbus_object_path", ))

1722

1723

_interface = "se.recompile.Mandos.Client"

1724

1242

+ ("dbus_object_path",))

1243

1725

1244

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

1726

1727

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

1245

1246

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

1728

1247

self.bus = bus

1729

1248

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

1730

1249

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

1731

1250

# the D-Bus

1732

client_object_name = str(self.name).translate(

1251

client_object_name = unicode(self.name).translate(

1733

1252

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

1734

1253

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

1735

self.dbus_object_path = dbus.ObjectPath(

1736

"/clients/" + client_object_name)

1254

self.dbus_object_path = (dbus.ObjectPath

1255

("/clients/" + client_object_name))

1737

1256

DBusObjectWithProperties.__init__(self, self.bus,

1738

1257

self.dbus_object_path)

1739

1740

def notifychangeproperty(transform_func, dbus_name,

1741

type_func=lambda x: x,

1742

variant_level=1,

1743

invalidate_only=False,

1744

_interface=_interface):

1258

1259

def notifychangeproperty(transform_func,

1260

dbus_name, type_func=lambda x: x,

1261

variant_level=1):

1745

1262

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

1746

1263

its changes to DBus.

1747

1264

1748

1265

transform_fun: Function that takes a value and a variant_level

1749

1266

and transforms it to a D-Bus type.

1750

1267

dbus_name: D-Bus name of the variable

1752

1269

to the D-Bus. Default: no transform

1753

1270

variant_level: D-Bus variant level. Default: 1

1754

1271

"""

1755

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

1756

1272

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

1757

1273

def setter(self, value):

1758

1274

if hasattr(self, "dbus_object_path"):

1759

1275

if (not hasattr(self, attrname) or

1760

1276

type_func(getattr(self, attrname, None))

1761

1277

!= type_func(value)):

1762

if invalidate_only:

1763

self.PropertiesChanged(

1764

_interface, dbus.Dictionary(),

1765

dbus.Array((dbus_name, )))

1766

else:

1767

dbus_value = transform_func(

1768

type_func(value),

1769

variant_level=variant_level)

1770

self.PropertyChanged(dbus.String(dbus_name),

1771

dbus_value)

1772

self.PropertiesChanged(

1773

_interface,

1774

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

1775

dbus_value}),

1776

dbus.Array())

1278

dbus_value = transform_func(type_func(value),

1279

variant_level

1280

=variant_level)

1281

self.PropertyChanged(dbus.String(dbus_name),

1282

dbus_value)

1777

1283

setattr(self, attrname, value)

1778

1284

1779

1285

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

1780

1286

1781

1287

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1782

1288

approvals_pending = notifychangeproperty(dbus.Boolean,

1783

1289

"ApprovalPending",

1784

type_func=bool)

1290

type_func = bool)

1785

1291

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

1786

1292

last_enabled = notifychangeproperty(datetime_to_dbus,

1787

1293

"LastEnabled")

1788

checker = notifychangeproperty(

1789

dbus.Boolean, "CheckerRunning",

1790

type_func=lambda checker: checker is not None)

1294

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

1295

type_func = lambda checker:

1296

checker is not None)

1791

1297

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1792

1298

"LastCheckedOK")

1793

1299

last_checker_status = notifychangeproperty(dbus.Int16,

1796

1302

datetime_to_dbus, "LastApprovalRequest")

1797

1303

approved_by_default = notifychangeproperty(dbus.Boolean,

1798

1304

"ApprovedByDefault")

1799

approval_delay = notifychangeproperty(

1800

dbus.UInt64, "ApprovalDelay",

1801

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

1305

approval_delay = notifychangeproperty(dbus.UInt64,

1306

"ApprovalDelay",

1307

type_func =

1308

timedelta_to_milliseconds)

1802

1309

approval_duration = notifychangeproperty(

1803

1310

dbus.UInt64, "ApprovalDuration",

1804

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

1311

type_func = timedelta_to_milliseconds)

1805

1312

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

1806

timeout = notifychangeproperty(

1807

dbus.UInt64, "Timeout",

1808

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

1313

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

1314

type_func =

1315

timedelta_to_milliseconds)

1809

1316

extended_timeout = notifychangeproperty(

1810

1317

dbus.UInt64, "ExtendedTimeout",

1811

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

1812

interval = notifychangeproperty(

1813

dbus.UInt64, "Interval",

1814

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

1318

type_func = timedelta_to_milliseconds)

1319

interval = notifychangeproperty(dbus.UInt64,

1320

"Interval",

1321

type_func =

1322

timedelta_to_milliseconds)

1815

1323

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

1816

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

1817

invalidate_only=True)

1818

1324

1819

1325

del notifychangeproperty

1820

1326

1821

1327

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

1822

1328

try:

1823

1329

self.remove_from_connection()

1826

1332

if hasattr(DBusObjectWithProperties, "__del__"):

1827

1333

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

1828

1334

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

1829

1830

def checker_callback(self, source, condition,

1831

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

1832

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

1833

connection, command, *args,

1834

**kwargs)

1835

exitstatus = self.last_checker_status

1836

if exitstatus >= 0:

1335

1336

def checker_callback(self, pid, condition, command,

1337

*args, **kwargs):

1338

self.checker_callback_tag = None

1339

self.checker = None

1340

if os.WIFEXITED(condition):

1341

exitstatus = os.WEXITSTATUS(condition)

1837

1342

# Emit D-Bus signal

1838

1343

self.CheckerCompleted(dbus.Int16(exitstatus),

1839

# This is specific to GNU libC

1840

dbus.Int64(exitstatus << 8),

1344

dbus.Int64(condition),

1841

1345

dbus.String(command))

1842

1346

else:

1843

1347

# Emit D-Bus signal

1844

1348

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

1845

dbus.Int64(

1846

# This is specific to GNU libC

1847

(exitstatus << 8)

1848

| self.last_checker_signal),

1349

dbus.Int64(condition),

1849

1350

dbus.String(command))

1850

return ret

1851

1351

1352

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

1353

*args, **kwargs)

1354

1852

1355

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

1853

1356

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

1854

1357

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

1858

1361

# Emit D-Bus signal

1859

1362

self.CheckerStarted(self.current_checker_command)

1860

1363

return r

1861

1364

1862

1365

def _reset_approved(self):

1863

1366

self.approved = None

1864

1367

return False

1865

1368

1866

1369

def approve(self, value=True):

1867

1370

self.approved = value

1868

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

1869

* 1000), self._reset_approved)

1371

gobject.timeout_add(timedelta_to_milliseconds

1372

(self.approval_duration),

1373

self._reset_approved)

1870

1374

self.send_changedstate()

1871

1872

# D-Bus methods, signals & properties

1873

1874

# Interfaces

1875

1876

# Signals

1877

1375

1376

## D-Bus methods, signals & properties

1377

_interface = "se.recompile.Mandos.Client"

1378

1379

## Interfaces

1380

1381

@dbus_interface_annotations(_interface)

1382

def _foo(self):

1383

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

1384

"false"}

1385

1386

## Signals

1387

1878

1388

# CheckerCompleted - signal

1879

1389

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

1880

1390

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

1881

1391

"D-Bus signal"

1882

1392

pass

1883

1393

1884

1394

# CheckerStarted - signal

1885

1395

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

1886

1396

def CheckerStarted(self, command):

1887

1397

"D-Bus signal"

1888

1398

pass

1889

1399

1890

1400

# PropertyChanged - signal

1891

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

1892

1401

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

1893

1402

def PropertyChanged(self, property, value):

1894

1403

"D-Bus signal"

1895

1404

pass

1896

1405

1897

1406

# GotSecret - signal

1898

1407

@dbus.service.signal(_interface)

1899

1408

def GotSecret(self):

1902

1411

server to mandos-client

1903

1412

"""

1904

1413

pass

1905

1414

1906

1415

# Rejected - signal

1907

1416

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

1908

1417

def Rejected(self, reason):

1909

1418

"D-Bus signal"

1910

1419

pass

1911

1420

1912

1421

# NeedApproval - signal

1913

1422

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

1914

1423

def NeedApproval(self, timeout, default):

1915

1424

"D-Bus signal"

1916

1425

return self.need_approval()

1917

1918

# Methods

1919

1426

1427

## Methods

1428

1920

1429

# Approve - method

1921

1430

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

1922

1431

def Approve(self, value):

1923

1432

self.approve(value)

1924

1433

1925

1434

# CheckedOK - method

1926

1435

@dbus.service.method(_interface)

1927

1436

def CheckedOK(self):

1928

1437

self.checked_ok()

1929

1438

1930

1439

# Enable - method

1931

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

1932

1440

@dbus.service.method(_interface)

1933

1441

def Enable(self):

1934

1442

"D-Bus method"

1935

1443

self.enable()

1936

1444

1937

1445

# StartChecker - method

1938

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

1939

1446

@dbus.service.method(_interface)

1940

1447

def StartChecker(self):

1941

1448

"D-Bus method"

1942

1449

self.start_checker()

1943

1450

1944

1451

# Disable - method

1945

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

1946

1452

@dbus.service.method(_interface)

1947

1453

def Disable(self):

1948

1454

"D-Bus method"

1949

1455

self.disable()

1950

1456

1951

1457

# StopChecker - method

1952

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

1953

1458

@dbus.service.method(_interface)

1954

1459

def StopChecker(self):

1955

1460

self.stop_checker()

1956

1957

# Properties

1958

1461

1462

## Properties

1463

1959

1464

# ApprovalPending - property

1960

1465

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

1961

1466

def ApprovalPending_dbus_property(self):

1962

1467

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

1963

1468

1964

1469

# ApprovedByDefault - property

1965

@dbus_service_property(_interface,

1966

signature="b",

1470

@dbus_service_property(_interface, signature="b",

1967

1471

access="readwrite")

1968

1472

def ApprovedByDefault_dbus_property(self, value=None):

1969

1473

if value is None: # get

1970

1474

return dbus.Boolean(self.approved_by_default)

1971

1475

self.approved_by_default = bool(value)

1972

1476

1973

1477

# ApprovalDelay - property

1974

@dbus_service_property(_interface,

1975

signature="t",

1478

@dbus_service_property(_interface, signature="t",

1976

1479

access="readwrite")

1977

1480

def ApprovalDelay_dbus_property(self, value=None):

1978

1481

if value is None: # get

1979

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

1980

* 1000)

1482

return dbus.UInt64(self.approval_delay_milliseconds())

1981

1483

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

1982

1484

1983

1485

# ApprovalDuration - property

1984

@dbus_service_property(_interface,

1985

signature="t",

1486

@dbus_service_property(_interface, signature="t",

1986

1487

access="readwrite")

1987

1488

def ApprovalDuration_dbus_property(self, value=None):

1988

1489

if value is None: # get

1989

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

1990

* 1000)

1490

return dbus.UInt64(timedelta_to_milliseconds(

1491

self.approval_duration))

1991

1492

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

1992

1493

1993

1494

# Name - property

1994

@dbus_annotations(

1995

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

1996

1495

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

1997

1496

def Name_dbus_property(self):

1998

1497

return dbus.String(self.name)

1999

1498

2000

1499

# Fingerprint - property

2001

@dbus_annotations(

2002

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

2003

1500

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

2004

1501

def Fingerprint_dbus_property(self):

2005

1502

return dbus.String(self.fingerprint)

2006

1503

2007

1504

# Host - property

2008

@dbus_service_property(_interface,

2009

signature="s",

1505

@dbus_service_property(_interface, signature="s",

2010

1506

access="readwrite")

2011

1507

def Host_dbus_property(self, value=None):

2012

1508

if value is None: # get

2013

1509

return dbus.String(self.host)

2014

self.host = str(value)

2015

1510

self.host = unicode(value)

1511

2016

1512

# Created - property

2017

@dbus_annotations(

2018

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

2019

1513

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

2020

1514

def Created_dbus_property(self):

2021

1515

return datetime_to_dbus(self.created)

2022

1516

2023

1517

# LastEnabled - property

2024

1518

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

2025

1519

def LastEnabled_dbus_property(self):

2026

1520

return datetime_to_dbus(self.last_enabled)

2027

1521

2028

1522

# Enabled - property

2029

@dbus_service_property(_interface,

2030

signature="b",

1523

@dbus_service_property(_interface, signature="b",

2031

1524

access="readwrite")

2032

1525

def Enabled_dbus_property(self, value=None):

2033

1526

if value is None: # get

2036

1529

self.enable()

2037

1530

else:

2038

1531

self.disable()

2039

1532

2040

1533

# LastCheckedOK - property

2041

@dbus_service_property(_interface,

2042

signature="s",

1534

@dbus_service_property(_interface, signature="s",

2043

1535

access="readwrite")

2044

1536

def LastCheckedOK_dbus_property(self, value=None):

2045

1537

if value is not None:

2046

1538

self.checked_ok()

2047

1539

return

2048

1540

return datetime_to_dbus(self.last_checked_ok)

2049

1541

2050

1542

# LastCheckerStatus - property

2051

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

1543

@dbus_service_property(_interface, signature="n",

1544

access="read")

2052

1545

def LastCheckerStatus_dbus_property(self):

2053

1546

return dbus.Int16(self.last_checker_status)

2054

1547

2055

1548

# Expires - property

2056

1549

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

2057

1550

def Expires_dbus_property(self):

2058

1551

return datetime_to_dbus(self.expires)

2059

1552

2060

1553

# LastApprovalRequest - property

2061

1554

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

2062

1555

def LastApprovalRequest_dbus_property(self):

2063

1556

return datetime_to_dbus(self.last_approval_request)

2064

1557

2065

1558

# Timeout - property

2066

@dbus_service_property(_interface,

2067

signature="t",

1559

@dbus_service_property(_interface, signature="t",

2068

1560

access="readwrite")

2069

1561

def Timeout_dbus_property(self, value=None):

2070

1562

if value is None: # get

2071

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

1563

return dbus.UInt64(self.timeout_milliseconds())

2072

1564

old_timeout = self.timeout

2073

1565

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

2074

1566

# Reschedule disabling

2082

1574

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

2083

1575

is None):

2084

1576

return

2085

GLib.source_remove(self.disable_initiator_tag)

2086

self.disable_initiator_tag = GLib.timeout_add(

2087

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

2088

self.disable)

2089

1577

gobject.source_remove(self.disable_initiator_tag)

1578

self.disable_initiator_tag = (

1579

gobject.timeout_add(

1580

timedelta_to_milliseconds(self.expires - now),

1581

self.disable))

1582

2090

1583

# ExtendedTimeout - property

2091

@dbus_service_property(_interface,

2092

signature="t",

1584

@dbus_service_property(_interface, signature="t",

2093

1585

access="readwrite")

2094

1586

def ExtendedTimeout_dbus_property(self, value=None):

2095

1587

if value is None: # get

2096

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

2097

* 1000)

1588

return dbus.UInt64(self.extended_timeout_milliseconds())

2098

1589

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

2099

1590

2100

1591

# Interval - property

2101

@dbus_service_property(_interface,

2102

signature="t",

1592

@dbus_service_property(_interface, signature="t",

2103

1593

access="readwrite")

2104

1594

def Interval_dbus_property(self, value=None):

2105

1595

if value is None: # get

2106

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

1596

return dbus.UInt64(self.interval_milliseconds())

2107

1597

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

2108

1598

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

2109

1599

return

2110

1600

if self.enabled:

2111

1601

# Reschedule checker run

2112

GLib.source_remove(self.checker_initiator_tag)

2113

self.checker_initiator_tag = GLib.timeout_add(

2114

value, self.start_checker)

2115

self.start_checker() # Start one now, too

2116

1602

gobject.source_remove(self.checker_initiator_tag)

1603

self.checker_initiator_tag = (gobject.timeout_add

1604

(value, self.start_checker))

1605

self.start_checker() # Start one now, too

1606

2117

1607

# Checker - property

2118

@dbus_service_property(_interface,

2119

signature="s",

1608

@dbus_service_property(_interface, signature="s",

2120

1609

access="readwrite")

2121

1610

def Checker_dbus_property(self, value=None):

2122

1611

if value is None: # get

2123

1612

return dbus.String(self.checker_command)

2124

self.checker_command = str(value)

2125

1613

self.checker_command = unicode(value)

1614

2126

1615

# CheckerRunning - property

2127

@dbus_service_property(_interface,

2128

signature="b",

1616

@dbus_service_property(_interface, signature="b",

2129

1617

access="readwrite")

2130

1618

def CheckerRunning_dbus_property(self, value=None):

2131

1619

if value is None: # get

2134

1622

self.start_checker()

2135

1623

else:

2136

1624

self.stop_checker()

2137

1625

2138

1626

# ObjectPath - property

2139

@dbus_annotations(

2140

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

2141

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

2142

1627

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

2143

1628

def ObjectPath_dbus_property(self):

2144

return self.dbus_object_path # is already a dbus.ObjectPath

2145

1629

return self.dbus_object_path # is already a dbus.ObjectPath

1630

2146

1631

# Secret = property

2147

@dbus_annotations(

2148

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

2149

"invalidates"})

2150

@dbus_service_property(_interface,

2151

signature="ay",

2152

access="write",

2153

byte_arrays=True)

1632

@dbus_service_property(_interface, signature="ay",

1633

access="write", byte_arrays=True)

2154

1634

def Secret_dbus_property(self, value):

2155

self.secret = bytes(value)

2156

1635

self.secret = str(value)

1636

2157

1637

del _interface

2158

1638

2159

1639

2162

1642

self._pipe = child_pipe

2163

1643

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

2164

1644

if not self._pipe.recv():

2165

raise KeyError(fpr)

2166

1645

raise KeyError()

1646

2167

1647

def __getattribute__(self, name):

2168

1648

if name == '_pipe':

2169

1649

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

2172

1652

if data[0] == 'data':

2173

1653

return data[1]

2174

1654

if data[0] == 'function':

2175

2176

1655

def func(*args, **kwargs):

2177

1656

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

2178

1657

return self._pipe.recv()[1]

2179

2180

1658

return func

2181

1659

2182

1660

def __setattr__(self, name, value):

2183

1661

if name == '_pipe':

2184

1662

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

2187

1665

2188

1666

class ClientHandler(socketserver.BaseRequestHandler, object):

2189

1667

"""A class to handle client connections.

2190

1668

2191

1669

Instantiated once for each connection to handle it.

2192

1670

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

2193

1671

2194

1672

def handle(self):

2195

1673

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

2196

1674

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

2197

str(self.client_address))

1675

unicode(self.client_address))

2198

1676

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

2199

1677

self.server.child_pipe.fileno())

2200

2201

session = gnutls.ClientSession(self.request)

2202

2203

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

2204

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

2205

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

2206

# "+DHE-DSS"))

1678

1679

session = (gnutls.connection

1680

.ClientSession(self.request,

1681

gnutls.connection

1682

.X509Credentials()))

1683

1684

# Note: gnutls.connection.X509Credentials is really a

1685

# generic GnuTLS certificate credentials object so long as

1686

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

1687

# here despite using OpenPGP certificates.

1688

1689

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

1690

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

1691

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

1692

# "+DHE-DSS"))

2207

1693

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

2208

1694

priority = self.server.gnutls_priority

2209

1695

if priority is None:

2210

1696

priority = "NORMAL"

2211

gnutls.priority_set_direct(session._c_object,

2212

priority.encode("utf-8"),

2213

None)

2214

1697

(gnutls.library.functions

1698

.gnutls_priority_set_direct(session._c_object,

1699

priority, None))

1700

2215

1701

# Start communication using the Mandos protocol

2216

1702

# Get protocol number

2217

1703

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

2222

1708

except (ValueError, IndexError, RuntimeError) as error:

2223

1709

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

2224

1710

return

2225

1711

2226

1712

# Start GnuTLS connection

2227

1713

try:

2228

1714

session.handshake()

2229

except gnutls.Error as error:

1715

except gnutls.errors.GNUTLSError as error:

2230

1716

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

2231

1717

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

2232

1718

# established. Just abandon the request.

2233

1719

return

2234

1720

logger.debug("Handshake succeeded")

2235

1721

2236

1722

approval_required = False

2237

1723

try:

2238

1724

try:

2239

fpr = self.fingerprint(

2240

self.peer_certificate(session))

2241

except (TypeError, gnutls.Error) as error:

1725

fpr = self.fingerprint(self.peer_certificate

1726

(session))

1727

except (TypeError,

1728

gnutls.errors.GNUTLSError) as error:

2242

1729

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

2243

1730

return

2244

1731

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

2245

1732

2246

1733

try:

2247

1734

client = ProxyClient(child_pipe, fpr,

2248

1735

self.client_address)

2249

1736

except KeyError:

2250

1737

return

2251

1738

2252

1739

if client.approval_delay:

2253

1740

delay = client.approval_delay

2254

1741

client.approvals_pending += 1

2255

1742

approval_required = True

2256

1743

2257

1744

while True:

2258

1745

if not client.enabled:

2259

1746

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

2260

client.name)

1747

client.name)

2261

1748

if self.server.use_dbus:

2262

1749

# Emit D-Bus signal

2263

1750

client.Rejected("Disabled")

2264

1751

return

2265

1752

2266

1753

if client.approved or not client.approval_delay:

2267

# We are approved or approval is disabled

1754

#We are approved or approval is disabled

2268

1755

break

2269

1756

elif client.approved is None:

2270

1757

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

2272

1759

if self.server.use_dbus:

2273

1760

# Emit D-Bus signal

2274

1761

client.NeedApproval(

2275

client.approval_delay.total_seconds()

2276

* 1000, client.approved_by_default)

1762

client.approval_delay_milliseconds(),

1763

client.approved_by_default)

2277

1764

else:

2278

1765

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

2279

1766

client.name)

2281

1768

# Emit D-Bus signal

2282

1769

client.Rejected("Denied")

2283

1770

return

2284

2285

# wait until timeout or approved

1771

1772

#wait until timeout or approved

2286

1773

time = datetime.datetime.now()

2287

1774

client.changedstate.acquire()

2288

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

1775

client.changedstate.wait(

1776

float(timedelta_to_milliseconds(delay)

1777

/ 1000))

2289

1778

client.changedstate.release()

2290

1779

time2 = datetime.datetime.now()

2291

1780

if (time2 - time) >= delay:

2301

1790

break

2302

1791

else:

2303

1792

delay -= time2 - time

2304

2305

try:

2306

session.send(client.secret)

2307

except gnutls.Error as error:

2308

logger.warning("gnutls send failed",

2309

exc_info=error)

2310

return

2311

1793

1794

sent_size = 0

1795

while sent_size < len(client.secret):

1796

try:

1797

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

1798

except gnutls.errors.GNUTLSError as error:

1799

logger.warning("gnutls send failed",

1800

exc_info=error)

1801

return

1802

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

1803

sent, len(client.secret)

1804

- (sent_size + sent))

1805

sent_size += sent

1806

2312

1807

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

2313

1808

# bump the timeout using extended_timeout

2314

1809

client.bump_timeout(client.extended_timeout)

2315

1810

if self.server.use_dbus:

2316

1811

# Emit D-Bus signal

2317

1812

client.GotSecret()

2318

1813

2319

1814

finally:

2320

1815

if approval_required:

2321

1816

client.approvals_pending -= 1

2322

1817

try:

2323

1818

session.bye()

2324

except gnutls.Error as error:

1819

except gnutls.errors.GNUTLSError as error:

2325

1820

logger.warning("GnuTLS bye failed",

2326

1821

exc_info=error)

2327

1822

2328

1823

@staticmethod

2329

1824

def peer_certificate(session):

2330

1825

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

2331

1826

# If not an OpenPGP certificate...

2332

if (gnutls.certificate_type_get(session._c_object)

2333

!= gnutls.CRT_OPENPGP):

2334

# ...return invalid data

2335

return b""

1827

if (gnutls.library.functions

1828

.gnutls_certificate_type_get(session._c_object)

1829

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1830

# ...do the normal thing

1831

return session.peer_certificate

2336

1832

list_size = ctypes.c_uint(1)

2337

cert_list = (gnutls.certificate_get_peers

1833

cert_list = (gnutls.library.functions

1834

.gnutls_certificate_get_peers

2338

1835

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

2339

1836

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

2340

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

1837

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

1838

" certificate")

2341

1839

if list_size.value == 0:

2342

1840

return None

2343

1841

cert = cert_list[0]

2344

1842

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

2345

1843

2346

1844

@staticmethod

2347

1845

def fingerprint(openpgp):

2348

1846

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

2349

1847

# New GnuTLS "datum" with the OpenPGP public key

2350

datum = gnutls.datum_t(

2351

ctypes.cast(ctypes.c_char_p(openpgp),

2352

ctypes.POINTER(ctypes.c_ubyte)),

2353

ctypes.c_uint(len(openpgp)))

1848

datum = (gnutls.library.types

1849

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

1850

ctypes.POINTER

1851

(ctypes.c_ubyte)),

1852

ctypes.c_uint(len(openpgp))))

2354

1853

# New empty GnuTLS certificate

2355

crt = gnutls.openpgp_crt_t()

2356

gnutls.openpgp_crt_init(ctypes.byref(crt))

1854

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1855

(gnutls.library.functions

1856

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

2357

1857

# Import the OpenPGP public key into the certificate

2358

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

2359

gnutls.OPENPGP_FMT_RAW)

1858

(gnutls.library.functions

1859

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

1860

gnutls.library.constants

1861

.GNUTLS_OPENPGP_FMT_RAW))

2360

1862

# Verify the self signature in the key

2361

1863

crtverify = ctypes.c_uint()

2362

gnutls.openpgp_crt_verify_self(crt, 0,

2363

ctypes.byref(crtverify))

1864

(gnutls.library.functions

1865

.gnutls_openpgp_crt_verify_self(crt, 0,

1866

ctypes.byref(crtverify)))

2364

1867

if crtverify.value != 0:

2365

gnutls.openpgp_crt_deinit(crt)

2366

raise gnutls.CertificateSecurityError("Verify failed")

1868

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1869

raise (gnutls.errors.CertificateSecurityError

1870

("Verify failed"))

2367

1871

# New buffer for the fingerprint

2368

1872

buf = ctypes.create_string_buffer(20)

2369

1873

buf_len = ctypes.c_size_t()

2370

1874

# Get the fingerprint from the certificate into the buffer

2371

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

2372

ctypes.byref(buf_len))

1875

(gnutls.library.functions

1876

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

1877

ctypes.byref(buf_len)))

2373

1878

# Deinit the certificate

2374

gnutls.openpgp_crt_deinit(crt)

1879

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

2375

1880

# Convert the buffer to a Python bytestring

2376

1881

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

2377

1882

# Convert the bytestring to hexadecimal notation

2381

1886

2382

1887

class MultiprocessingMixIn(object):

2383

1888

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

2384

2385

1889

def sub_process_main(self, request, address):

2386

1890

try:

2387

1891

self.finish_request(request, address)

2388

1892

except Exception:

2389

1893

self.handle_error(request, address)

2390

1894

self.close_request(request)

2391

1895

2392

1896

def process_request(self, request, address):

2393

1897

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

2394

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

2395

args=(request, address))

1898

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

1899

args = (request, address))

2396

1900

proc.start()

2397

1901

return proc

2398

1902

2399

1903

2400

1904

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

2401

1905

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

2402

2403

1906

def process_request(self, request, client_address):

2404

1907

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

2405

1908

2406

1909

This function creates a new pipe in self.pipe

2407

1910

"""

2408

1911

parent_pipe, self.child_pipe = multiprocessing.Pipe()

2409

1912

2410

1913

proc = MultiprocessingMixIn.process_request(self, request,

2411

1914

client_address)

2412

1915

self.child_pipe.close()

2413

1916

self.add_pipe(parent_pipe, proc)

2414

1917

2415

1918

def add_pipe(self, parent_pipe, proc):

2416

1919

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

2417

1920

raise NotImplementedError()

2420

1923

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

2421

1924

socketserver.TCPServer, object):

2422

1925

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

2423

1926

2424

1927

Attributes:

2425

1928

enabled: Boolean; whether this server is activated yet

2426

1929

interface: None or a network interface name (string)

2427

1930

use_ipv6: Boolean; to use IPv6 or not

2428

1931

"""

2429

2430

1932

def __init__(self, server_address, RequestHandlerClass,

2431

interface=None,

2432

use_ipv6=True,

2433

socketfd=None):

1933

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

2434

1934

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

2435

1935

creating a new one with socket.socket().

2436

1936

"""

2442

1942

self.socketfd = socketfd

2443

1943

# Save the original socket.socket() function

2444

1944

self.socket_socket = socket.socket

2445

2446

1945

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

2447

#

1946

#

2448

1947

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

2449

1948

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

2450

1949

# patching socket.socket.)

2451

#

1950

#

2452

1951

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

2453

1952

@functools.wraps(socket.socket)

2454

1953

def socket_wrapper(*args, **kwargs):

2466

1965

# socket_wrapper(), if socketfd was set.

2467

1966

socketserver.TCPServer.__init__(self, server_address,

2468

1967

RequestHandlerClass)

2469

1968

2470

1969

def server_bind(self):

2471

1970

"""This overrides the normal server_bind() function

2472

1971

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

2473

1972

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

2474

global SO_BINDTODEVICE

2475

1973

if self.interface is not None:

2476

1974

if SO_BINDTODEVICE is None:

2477

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

2478

# common enough.

2479

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

2480

SO_BINDTODEVICE = 25

2481

try:

2482

self.socket.setsockopt(

2483

socket.SOL_SOCKET, SO_BINDTODEVICE,

2484

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

2485

except socket.error as error:

2486

if error.errno == errno.EPERM:

2487

logger.error("No permission to bind to"

2488

" interface %s", self.interface)

2489

elif error.errno == errno.ENOPROTOOPT:

2490

logger.error("SO_BINDTODEVICE not available;"

2491

" cannot bind to interface %s",

2492

self.interface)

2493

elif error.errno == errno.ENODEV:

2494

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

2495

" cannot bind", self.interface)

2496

else:

2497

raise

1975

logger.error("SO_BINDTODEVICE does not exist;"

1976

" cannot bind to interface %s",

1977

self.interface)

1978

else:

1979

try:

1980

self.socket.setsockopt(socket.SOL_SOCKET,

1981

SO_BINDTODEVICE,

1982

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

1983

except socket.error as error:

1984

if error.errno == errno.EPERM:

1985

logger.error("No permission to bind to"

1986

" interface %s", self.interface)

1987

elif error.errno == errno.ENOPROTOOPT:

1988

logger.error("SO_BINDTODEVICE not available;"

1989

" cannot bind to interface %s",

1990

self.interface)

1991

elif error.errno == errno.ENODEV:

1992

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

1993

" cannot bind", self.interface)

1994

else:

1995

raise

2498

1996

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

2499

1997

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

2500

1998

if not self.server_address[0]:

2501

1999

if self.address_family == socket.AF_INET6:

2502

any_address = "::" # in6addr_any

2000

any_address = "::" # in6addr_any

2503

2001

else:

2504

any_address = "0.0.0.0" # INADDR_ANY

2002

any_address = "0.0.0.0" # INADDR_ANY

2505

2003

self.server_address = (any_address,

2506

2004

self.server_address[1])

2507

2005

elif not self.server_address[1]:

2508

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

2006

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

2007

0)

2509

2008

# if self.interface:

2510

2009

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

2511

2010

# 0, # port

2517

2016

2518

2017

class MandosServer(IPv6_TCPServer):

2519

2018

"""Mandos server.

2520

2019

2521

2020

Attributes:

2522

2021

clients: set of Client objects

2523

2022

gnutls_priority GnuTLS priority string

2524

2023

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

2525

2526

Assumes a GLib.MainLoop event loop.

2024

2025

Assumes a gobject.MainLoop event loop.

2527

2026

"""

2528

2529

2027

def __init__(self, server_address, RequestHandlerClass,

2530

interface=None,

2531

use_ipv6=True,

2532

clients=None,

2533

gnutls_priority=None,

2534

use_dbus=True,

2535

socketfd=None):

2028

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

2029

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

2536

2030

self.enabled = False

2537

2031

self.clients = clients

2538

2032

if self.clients is None:

2541

2035

self.gnutls_priority = gnutls_priority

2542

2036

IPv6_TCPServer.__init__(self, server_address,

2543

2037

RequestHandlerClass,

2544

interface=interface,

2545

use_ipv6=use_ipv6,

2546

socketfd=socketfd)

2547

2038

interface = interface,

2039

use_ipv6 = use_ipv6,

2040

socketfd = socketfd)

2548

2041

def server_activate(self):

2549

2042

if self.enabled:

2550

2043

return socketserver.TCPServer.server_activate(self)

2551

2044

2552

2045

def enable(self):

2553

2046

self.enabled = True

2554

2047

2555

2048

def add_pipe(self, parent_pipe, proc):

2556

2049

# Call "handle_ipc" for both data and EOF events

2557

GLib.io_add_watch(

2558

parent_pipe.fileno(),

2559

GLib.IO_IN | GLib.IO_HUP,

2560

functools.partial(self.handle_ipc,

2561

parent_pipe=parent_pipe,

2562

proc=proc))

2563

2564

def handle_ipc(self, source, condition,

2565

parent_pipe=None,

2566

proc=None,

2567

client_object=None):

2050

gobject.io_add_watch(parent_pipe.fileno(),

2051

gobject.IO_IN | gobject.IO_HUP,

2052

functools.partial(self.handle_ipc,

2053

parent_pipe =

2054

parent_pipe,

2055

proc = proc))

2056

2057

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

2058

proc = None, client_object=None):

2568

2059

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

2569

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

2060

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

2570

2061

# Wait for other process to exit

2571

2062

proc.join()

2572

2063

return False

2573

2064

2574

2065

# Read a request from the child

2575

2066

request = parent_pipe.recv()

2576

2067

command = request[0]

2577

2068

2578

2069

if command == 'init':

2579

2070

fpr = request[1]

2580

2071

address = request[2]

2581

2582

for c in self.clients.values():

2072

2073

for c in self.clients.itervalues():

2583

2074

if c.fingerprint == fpr:

2584

2075

client = c

2585

2076

break

2592

2083

address[0])

2593

2084

parent_pipe.send(False)

2594

2085

return False

2595

2596

GLib.io_add_watch(

2597

parent_pipe.fileno(),

2598

GLib.IO_IN | GLib.IO_HUP,

2599

functools.partial(self.handle_ipc,

2600

parent_pipe=parent_pipe,

2601

proc=proc,

2602

client_object=client))

2086

2087

gobject.io_add_watch(parent_pipe.fileno(),

2088

gobject.IO_IN | gobject.IO_HUP,

2089

functools.partial(self.handle_ipc,

2090

parent_pipe =

2091

parent_pipe,

2092

proc = proc,

2093

client_object =

2094

client))

2603

2095

parent_pipe.send(True)

2604

2096

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

2605

2097

# same fileno

2608

2100

funcname = request[1]

2609

2101

args = request[2]

2610

2102

kwargs = request[3]

2611

2103

2612

2104

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

2613

2105

funcname)(*args,

2614

**kwargs)))

2615

2106

**kwargs)))

2107

2616

2108

if command == 'getattr':

2617

2109

attrname = request[1]

2618

if isinstance(client_object.__getattribute__(attrname),

2619

collections.Callable):

2620

parent_pipe.send(('function', ))

2110

if callable(client_object.__getattribute__(attrname)):

2111

parent_pipe.send(('function',))

2621

2112

else:

2622

parent_pipe.send((

2623

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

2624

2113

parent_pipe.send(('data', client_object

2114

.__getattribute__(attrname)))

2115

2625

2116

if command == 'setattr':

2626

2117

attrname = request[1]

2627

2118

value = request[2]

2628

2119

setattr(client_object, attrname, value)

2629

2120

2630

2121

return True

2631

2122

2632

2123

2633

2124

def rfc3339_duration_to_delta(duration):

2634

2125

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

2635

2126

2636

2127

>>> rfc3339_duration_to_delta("P7D")

2637

2128

datetime.timedelta(7)

2638

2129

>>> rfc3339_duration_to_delta("PT60S")

2648

2139

>>> rfc3339_duration_to_delta("P1DT3M20S")

2649

2140

datetime.timedelta(1, 200)

2650

2141

"""

2651

2142

2652

2143

# Parsing an RFC 3339 duration with regular expressions is not

2653

2144

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

2654

2145

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

2655

2146

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

2656

2147

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

2657

2148

# avoid excessive use of external libraries.

2658

2149

2659

2150

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

2660

Token = collections.namedtuple("Token", (

2661

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

2662

# a "group" containing digits

2663

"value", # datetime.timedelta or None

2664

"followers")) # Tokens valid after this token

2151

Token = collections.namedtuple("Token",

2152

("regexp", # To match token; if

2153

# "value" is not None,

2154

# must have a "group"

2155

# containing digits

2156

"value", # datetime.timedelta or

2157

# None

2158

"followers")) # Tokens valid after

2159

# this token

2665

2160

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

2666

2161

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

2667

2162

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

2668

2163

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

2669

2164

datetime.timedelta(seconds=1),

2670

frozenset((token_end, )))

2165

frozenset((token_end,)))

2671

2166

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

2672

2167

datetime.timedelta(minutes=1),

2673

2168

frozenset((token_second, token_end)))

2689

2184

frozenset((token_month, token_end)))

2690

2185

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

2691

2186

datetime.timedelta(weeks=1),

2692

frozenset((token_end, )))

2187

frozenset((token_end,)))

2693

2188

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

2694

2189

frozenset((token_year, token_month,

2695

2190

token_day, token_time,

2696

token_week)))

2697

# Define starting values:

2698

# Value so far

2699

value = datetime.timedelta()

2191

token_week))),

2192

# Define starting values

2193

value = datetime.timedelta() # Value so far

2700

2194

found_token = None

2701

# Following valid tokens

2702

followers = frozenset((token_duration, ))

2703

# String left to parse

2704

s = duration

2195

followers = frozenset(token_duration,) # Following valid tokens

2196

s = duration # String left to parse

2705

2197

# Loop until end token is found

2706

2198

while found_token is not token_end:

2707

2199

# Search for any currently valid tokens

2723

2215

break

2724

2216

else:

2725

2217

# No currently valid tokens were found

2726

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

2727

.format(duration))

2218

raise ValueError("Invalid RFC 3339 duration")

2728

2219

# End token found

2729

2220

return value

2730

2221

2731

2222

2732

2223

def string_to_delta(interval):

2733

2224

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

2734

2225

2735

2226

>>> string_to_delta('7d')

2736

2227

datetime.timedelta(7)

2737

2228

>>> string_to_delta('60s')

2745

2236

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

2746

2237

datetime.timedelta(0, 330)

2747

2238

"""

2748

2239

2749

2240

try:

2750

2241

return rfc3339_duration_to_delta(interval)

2751

2242

except ValueError:

2752

2243

pass

2753

2244

2754

2245

timevalue = datetime.timedelta(0)

2755

2246

for s in interval.split():

2756

2247

try:

2757

suffix = s[-1]

2248

suffix = unicode(s[-1])

2758

2249

value = int(s[:-1])

2759

2250

if suffix == "d":

2760

2251

delta = datetime.timedelta(value)

2767

2258

elif suffix == "w":

2768

2259

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

2769

2260

else:

2770

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

2261

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

2262

.format(suffix))

2771

2263

except IndexError as e:

2772

2264

raise ValueError(*(e.args))

2773

2265

timevalue += delta

2774

2266

return timevalue

2775

2267

2776

2268

2777

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

2269

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

2778

2270

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

2779

2271

2780

2272

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

2781

2273

if os.fork():

2782

2274

sys.exit()

2790

2282

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

2791

2283

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

2792

2284

raise OSError(errno.ENODEV,

2793

"{} not a character device"

2285

"{0} not a character device"

2794

2286

.format(os.devnull))

2795

2287

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

2796

2288

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

2800

2292

2801

2293

2802

2294

def main():

2803

2295

2804

2296

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

2805

2297

# Parsing of options, both command line and config file

2806

2298

2807

2299

parser = argparse.ArgumentParser()

2808

2300

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

2809

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

2301

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

2810

2302

help="show version number and exit")

2811

2303

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

2812

2304

help="Bind to interface IF")

2848

2340

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

2849

2341

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

2850

2342

default=None)

2851

2343

2852

2344

options = parser.parse_args()

2853

2345

2854

2346

if options.check:

2855

2347

import doctest

2856

2348

fail_count, test_count = doctest.testmod()

2857

2349

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

2858

2350

2859

2351

# Default values for config file for server-global settings

2860

server_defaults = {"interface": "",

2861

"address": "",

2862

"port": "",

2863

"debug": "False",

2864

"priority":

2865

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

2866

":+SIGN-DSA-SHA256",

2867

"servicename": "Mandos",

2868

"use_dbus": "True",

2869

"use_ipv6": "True",

2870

"debuglevel": "",

2871

"restore": "True",

2872

"socket": "",

2873

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

2874

"foreground": "False",

2875

"zeroconf": "True",

2876

}

2877

2352

server_defaults = { "interface": "",

2353

"address": "",

2354

"port": "",

2355

"debug": "False",

2356

"priority":

2357

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

2358

"servicename": "Mandos",

2359

"use_dbus": "True",

2360

"use_ipv6": "True",

2361

"debuglevel": "",

2362

"restore": "True",

2363

"socket": "",

2364

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

2365

"foreground": "False",

2366

"zeroconf": "True",

2367

}

2368

2878

2369

# Parse config file for server-global settings

2879

2370

server_config = configparser.SafeConfigParser(server_defaults)

2880

2371

del server_defaults

2881

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

2372

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

2373

"mandos.conf"))

2882

2374

# Convert the SafeConfigParser object to a dict

2883

2375

server_settings = server_config.defaults()

2884

2376

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

2898

2390

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

2899

2391

["socket"])

2900

2392

del server_config

2901

2393

2902

2394

# Override the settings from the config file with command line

2903

2395

# options, if set.

2904

2396

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

2905

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

2906

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

2907

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

2397

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

2398

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

2399

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

2908

2400

value = getattr(options, option)

2909

2401

if value is not None:

2910

2402

server_settings[option] = value

2911

2403

del options

2912

2404

# Force all strings to be unicode

2913

2405

for option in server_settings.keys():

2914

if isinstance(server_settings[option], bytes):

2915

server_settings[option] = (server_settings[option]

2916

.decode("utf-8"))

2406

if type(server_settings[option]) is str:

2407

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

2917

2408

# Force all boolean options to be boolean

2918

2409

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

2919

2410

"foreground", "zeroconf"):

2922

2413

if server_settings["debug"]:

2923

2414

server_settings["foreground"] = True

2924

2415

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

2925

2416

2926

2417

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

2927

2928

if (not server_settings["zeroconf"]

2929

and not (server_settings["port"]

2930

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

2931

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

2932

2418

2419

if (not server_settings["zeroconf"] and

2420

not (server_settings["port"]

2421

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

2422

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

2423

" Zeroconf")

2424

2933

2425

# For convenience

2934

2426

debug = server_settings["debug"]

2935

2427

debuglevel = server_settings["debuglevel"]

2939

2431

stored_state_file)

2940

2432

foreground = server_settings["foreground"]

2941

2433

zeroconf = server_settings["zeroconf"]

2942

2434

2943

2435

if debug:

2944

2436

initlogger(debug, logging.DEBUG)

2945

2437

else:

2948

2440

else:

2949

2441

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

2950

2442

initlogger(debug, level)

2951

2443

2952

2444

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

2953

syslogger.setFormatter(

2954

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

2955

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

2956

server_settings["servicename"])))

2957

2445

syslogger.setFormatter(logging.Formatter

2446

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

2447

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

2448

.format(server_settings

2449

["servicename"])))

2450

2958

2451

# Parse config file with clients

2959

2452

client_config = configparser.SafeConfigParser(Client

2960

2453

.client_defaults)

2961

2454

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

2962

2455

"clients.conf"))

2963

2456

2964

2457

global mandos_dbus_service

2965

2458

mandos_dbus_service = None

2966

2459

2967

2460

socketfd = None

2968

2461

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

2969

2462

socketfd = server_settings["socket"]

2970

tcp_server = MandosServer(

2971

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

2972

ClientHandler,

2973

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

2974

use_ipv6=use_ipv6,

2975

gnutls_priority=server_settings["priority"],

2976

use_dbus=use_dbus,

2977

socketfd=socketfd)

2463

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

2464

server_settings["port"]),

2465

ClientHandler,

2466

interface=(server_settings["interface"]

2467

or None),

2468

use_ipv6=use_ipv6,

2469

gnutls_priority=

2470

server_settings["priority"],

2471

use_dbus=use_dbus,

2472

socketfd=socketfd)

2978

2473

if not foreground:

2979

2474

pidfilename = "/run/mandos.pid"

2980

2475

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

2981

2476

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

2982

2477

pidfile = None

2983

2478

try:

2984

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

2479

pidfile = open(pidfilename, "w")

2985

2480

except IOError as e:

2986

2481

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

2987

2482

exc_info=e)

2988

2989

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

2990

("mandos", "mandos"),

2991

("nobody", "nogroup")):

2483

2484

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

2992

2485

try:

2993

2486

uid = pwd.getpwnam(name).pw_uid

2994

gid = pwd.getpwnam(group).pw_gid

2487

gid = pwd.getpwnam(name).pw_gid

2995

2488

break

2996

2489

except KeyError:

2997

2490

continue

3001

2494

try:

3002

2495

os.setgid(gid)

3003

2496

os.setuid(uid)

3004

if debug:

3005

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

3006

gid))

3007

2497

except OSError as error:

3008

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

3009

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

3010

2498

if error.errno != errno.EPERM:

3011

2499

raise

3012

2500

3013

2501

if debug:

3014

2502

# Enable all possible GnuTLS debugging

3015

2503

3016

2504

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

3017

2505

# - GnuTLS manual

3018

gnutls.global_set_log_level(11)

3019

3020

@gnutls.log_func

2506

gnutls.library.functions.gnutls_global_set_log_level(11)

2507

2508

@gnutls.library.types.gnutls_log_func

3021

2509

def debug_gnutls(level, string):

3022

2510

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

3023

3024

gnutls.global_set_log_function(debug_gnutls)

3025

2511

2512

(gnutls.library.functions

2513

.gnutls_global_set_log_function(debug_gnutls))

2514

3026

2515

# Redirect stdin so all checkers get /dev/null

3027

2516

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

3028

2517

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

3029

2518

if null > 2:

3030

2519

os.close(null)

3031

2520

3032

2521

# Need to fork before connecting to D-Bus

3033

2522

if not foreground:

3034

2523

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

3035

2524

daemon()

3036

3037

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

3038

# to inform GLib that threads will be used.

3039

GLib.threads_init()

3040

2525

2526

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

2527

# need to inform gobject that threads will be used.

2528

gobject.threads_init()

2529

3041

2530

global main_loop

3042

2531

# From the Avahi example code

3043

2532

DBusGMainLoop(set_as_default=True)

3044

main_loop = GLib.MainLoop()

2533

main_loop = gobject.MainLoop()

3045

2534

bus = dbus.SystemBus()

3046

2535

# End of Avahi example code

3047

2536

if use_dbus:

3048

2537

try:

3049

2538

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

3050

bus,

3051

do_not_queue=True)

3052

old_bus_name = dbus.service.BusName(

3053

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

3054

do_not_queue=True)

3055

except dbus.exceptions.DBusException as e:

2539

bus, do_not_queue=True)

2540

old_bus_name = (dbus.service.BusName

2541

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

2542

do_not_queue=True))

2543

except dbus.exceptions.NameExistsException as e:

3056

2544

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

3057

2545

use_dbus = False

3058

2546

server_settings["use_dbus"] = False

3059

2547

tcp_server.use_dbus = False

3060

2548

if zeroconf:

3061

2549

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

3062

service = AvahiServiceToSyslog(

3063

name=server_settings["servicename"],

3064

servicetype="_mandos._tcp",

3065

protocol=protocol,

3066

bus=bus)

2550

service = AvahiServiceToSyslog(name =

2551

server_settings["servicename"],

2552

servicetype = "_mandos._tcp",

2553

protocol = protocol, bus = bus)

3067

2554

if server_settings["interface"]:

3068

service.interface = if_nametoindex(

3069

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

3070

2555

service.interface = (if_nametoindex

2556

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

2557

3071

2558

global multiprocessing_manager

3072

2559

multiprocessing_manager = multiprocessing.Manager()

3073

2560

3074

2561

client_class = Client

3075

2562

if use_dbus:

3076

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

3077

2563

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

2564

3078

2565

client_settings = Client.config_parser(client_config)

3079

2566

old_client_settings = {}

3080

2567

clients_data = {}

3081

2568

3082

2569

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

3083

2570

global wnull

3084

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

2571

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

3085

2572

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

3086

2573

# mode

3087

2574

if debug or not foreground:

3088

2575

wnull.close()

3089

2576

3090

2577

# Get client data and settings from last running state.

3091

2578

if server_settings["restore"]:

3092

2579

try:

3093

2580

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

3094

if sys.version_info.major == 2:

3095

clients_data, old_client_settings = pickle.load(

3096

stored_state)

3097

else:

3098

bytes_clients_data, bytes_old_client_settings = (

3099

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

3100

# Fix bytes to strings

3101

# clients_data

3102

# .keys()

3103

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

3104

if isinstance(key, bytes)

3105

else key): value

3106

for key, value in

3107

bytes_clients_data.items()}

3108

del bytes_clients_data

3109

for key in clients_data:

3110

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

3111

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

3112

for k, v in

3113

clients_data[key].items()}

3114

clients_data[key] = value

3115

# .client_structure

3116

value["client_structure"] = [

3117

(s.decode("utf-8")

3118

if isinstance(s, bytes)

3119

else s) for s in

3120

value["client_structure"]]

3121

# .name & .host

3122

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

3123

if isinstance(value[k], bytes):

3124

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

3125

# old_client_settings

3126

# .keys()

3127

old_client_settings = {

3128

(key.decode("utf-8")

3129

if isinstance(key, bytes)

3130

else key): value

3131

for key, value in

3132

bytes_old_client_settings.items()}

3133

del bytes_old_client_settings

3134

# .host

3135

for value in old_client_settings.values():

3136

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

3137

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

3138

.decode("utf-8"))

2581

clients_data, old_client_settings = (pickle.load

2582

(stored_state))

3139

2583

os.remove(stored_state_path)

3140

2584

except IOError as e:

3141

2585

if e.errno == errno.ENOENT:

3142

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

3143

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

2586

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

2587

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

3144

2588

else:

3145

2589

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

3146

2590

exc_info=e)

3147

2591

raise

3148

2592

except EOFError as e:

3149

2593

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

3150

"EOFError:",

3151

exc_info=e)

3152

2594

"EOFError:", exc_info=e)

2595

3153

2596

with PGPEngine() as pgp:

3154

for client_name, client in clients_data.items():

2597

for client_name, client in clients_data.iteritems():

3155

2598

# Skip removed clients

3156

2599

if client_name not in client_settings:

3157

2600

continue

3158

2601

3159

2602

# Decide which value to use after restoring saved state.

3160

2603

# We have three different values: Old config file,

3161

2604

# new config file, and saved state.

3166

2609

# For each value in new config, check if it

3167

2610

# differs from the old config value (Except for

3168

2611

# the "secret" attribute)

3169

if (name != "secret"

3170

and (value !=

3171

old_client_settings[client_name][name])):

2612

if (name != "secret" and

2613

value != old_client_settings[client_name]

2614

[name]):

3172

2615

client[name] = value

3173

2616

except KeyError:

3174

2617

pass

3175

2618

3176

2619

# Clients who has passed its expire date can still be

3177

# enabled if its last checker was successful. A Client

2620

# enabled if its last checker was successful. Clients

3178

2621

# whose checker succeeded before we stored its state is

3179

2622

# assumed to have successfully run all checkers during

3180

2623

# downtime.

3182

2625

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

3183

2626

if not client["last_checked_ok"]:

3184

2627

logger.warning(

3185

"disabling client {} - Client never "

3186

"performed a successful checker".format(

3187

client_name))

2628

"disabling client {0} - Client never "

2629

"performed a successful checker"

2630

.format(client_name))

3188

2631

client["enabled"] = False

3189

2632

elif client["last_checker_status"] != 0:

3190

2633

logger.warning(

3191

"disabling client {} - Client last"

3192

" checker failed with error code"

3193

" {}".format(

3194

client_name,

3195

client["last_checker_status"]))

2634

"disabling client {0} - Client "

2635

"last checker failed with error code {1}"

2636

.format(client_name,

2637

client["last_checker_status"]))

3196

2638

client["enabled"] = False

3197

2639

else:

3198

client["expires"] = (

3199

datetime.datetime.utcnow()

3200

+ client["timeout"])

2640

client["expires"] = (datetime.datetime

2641

.utcnow()

2642

+ client["timeout"])

3201

2643

logger.debug("Last checker succeeded,"

3202

" keeping {} enabled".format(

3203

client_name))

2644

" keeping {0} enabled"

2645

.format(client_name))

3204

2646

try:

3205

client["secret"] = pgp.decrypt(

3206

client["encrypted_secret"],

3207

client_settings[client_name]["secret"])

2647

client["secret"] = (

2648

pgp.decrypt(client["encrypted_secret"],

2649

client_settings[client_name]

2650

["secret"]))

3208

2651

except PGPError:

3209

2652

# If decryption fails, we use secret from new settings

3210

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

3211

client_name))

3212

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

3213

["secret"])

3214

2653

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

2654

.format(client_name))

2655

client["secret"] = (

2656

client_settings[client_name]["secret"])

2657

3215

2658

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

3216

2659

for client_name in (set(old_client_settings)

3217

2660

- set(client_settings)):

3219

2662

for client_name in (set(client_settings)

3220

2663

- set(old_client_settings)):

3221

2664

clients_data[client_name] = client_settings[client_name]

3222

2665

3223

2666

# Create all client objects

3224

for client_name, client in clients_data.items():

2667

for client_name, client in clients_data.iteritems():

3225

2668

tcp_server.clients[client_name] = client_class(

3226

name=client_name,

3227

settings=client,

3228

server_settings=server_settings)

3229

2669

name = client_name, settings = client,

2670

server_settings = server_settings)

2671

3230

2672

if not tcp_server.clients:

3231

2673

logger.warning("No clients defined")

3232

2674

3233

2675

if not foreground:

3234

2676

if pidfile is not None:

3235

pid = os.getpid()

3236

2677

try:

3237

2678

with pidfile:

3238

print(pid, file=pidfile)

2679

pid = os.getpid()

2680

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

3239

2681

except IOError:

3240

2682

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

3241

2683

pidfilename, pid)

3242

2684

del pidfile

3243

2685

del pidfilename

3244

3245

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

3246

GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,

3247

lambda: main_loop.quit() and False)

3248

2686

2687

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

2688

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

2689

3249

2690

if use_dbus:

3250

3251

@alternate_dbus_interfaces(

3252

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

3253

class MandosDBusService(DBusObjectWithObjectManager):

2691

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

2692

"se.bsnet.fukt.Mandos"})

2693

class MandosDBusService(DBusObjectWithProperties):

3254

2694

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

3255

3256

2695

def __init__(self):

3257

2696

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

3258

3259

2697

_interface = "se.recompile.Mandos"

3260

2698

2699

@dbus_interface_annotations(_interface)

2700

def _foo(self):

2701

return { "org.freedesktop.DBus.Property"

2702

".EmitsChangedSignal":

2703

"false"}

2704

3261

2705

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

3262

2706

def ClientAdded(self, objpath):

3263

2707

"D-Bus signal"

3264

2708

pass

3265

2709

3266

2710

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

3267

2711

def ClientNotFound(self, fingerprint, address):

3268

2712

"D-Bus signal"

3269

2713

pass

3270

3271

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

3272

"true"})

2714

3273

2715

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

3274

2716

def ClientRemoved(self, objpath, name):

3275

2717

"D-Bus signal"

3276

2718

pass

3277

3278

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

3279

"true"})

2719

3280

2720

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

3281

2721

def GetAllClients(self):

3282

2722

"D-Bus method"

3283

return dbus.Array(c.dbus_object_path for c in

3284

tcp_server.clients.values())

3285

3286

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

3287

"true"})

2723

return dbus.Array(c.dbus_object_path

2724

for c in

2725

tcp_server.clients.itervalues())

2726

3288

2727

@dbus.service.method(_interface,

3289

2728

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

3290

2729

def GetAllClientsWithProperties(self):

3291

2730

"D-Bus method"

3292

2731

return dbus.Dictionary(

3293

{c.dbus_object_path: c.GetAll(

3294

"se.recompile.Mandos.Client")

3295

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

2732

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

2733

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

3296

2734

signature="oa{sv}")

3297

2735

3298

2736

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

3299

2737

def RemoveClient(self, object_path):

3300

2738

"D-Bus method"

3301

for c in tcp_server.clients.values():

2739

for c in tcp_server.clients.itervalues():

3302

2740

if c.dbus_object_path == object_path:

3303

2741

del tcp_server.clients[c.name]

3304

2742

c.remove_from_connection()

3305

# Don't signal the disabling

2743

# Don't signal anything except ClientRemoved

3306

2744

c.disable(quiet=True)

3307

# Emit D-Bus signal for removal

3308

self.client_removed_signal(c)

2745

# Emit D-Bus signal

2746

self.ClientRemoved(object_path, c.name)

3309

2747

return

3310

2748

raise KeyError(object_path)

3311

2749

3312

2750

del _interface

3313

3314

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

3315

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

3316

def GetManagedObjects(self):

3317

"""D-Bus method"""

3318

return dbus.Dictionary(

3319

{client.dbus_object_path:

3320

dbus.Dictionary(

3321

{interface: client.GetAll(interface)

3322

for interface in

3323

client._get_all_interface_names()})

3324

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

3325

3326

def client_added_signal(self, client):

3327

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

3328

if use_dbus:

3329

# New standard signal

3330

self.InterfacesAdded(

3331

client.dbus_object_path,

3332

dbus.Dictionary(

3333

{interface: client.GetAll(interface)

3334

for interface in

3335

client._get_all_interface_names()}))

3336

# Old signal

3337

self.ClientAdded(client.dbus_object_path)

3338

3339

def client_removed_signal(self, client):

3340

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

3341

if use_dbus:

3342

# New standard signal

3343

self.InterfacesRemoved(

3344

client.dbus_object_path,

3345

client._get_all_interface_names())

3346

# Old signal

3347

self.ClientRemoved(client.dbus_object_path,

3348

client.name)

3349

2751

3350

2752

mandos_dbus_service = MandosDBusService()

3351

3352

# Save modules to variables to exempt the modules from being

3353

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

3354

mp = multiprocessing

3355

wn = wnull

3356

2753

3357

2754

def cleanup():

3358

2755

"Cleanup function; run on exit"

3359

2756

if zeroconf:

3360

2757

service.cleanup()

3361

3362

mp.active_children()

3363

wn.close()

2758

2759

multiprocessing.active_children()

2760

wnull.close()

3364

2761

if not (tcp_server.clients or client_settings):

3365

2762

return

3366

2763

3367

2764

# Store client before exiting. Secrets are encrypted with key

3368

2765

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

3369

2766

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

3370

2767

clients = {}

3371

2768

with PGPEngine() as pgp:

3372

for client in tcp_server.clients.values():

2769

for client in tcp_server.clients.itervalues():

3373

2770

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

3374

2771

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

3375

2772

key)

3376

2773

client_dict = {}

3377

2774

3378

2775

# A list of attributes that can not be pickled

3379

2776

# + secret.

3380

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

3381

"checker", "server_settings"}

3382

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

3383

.Object):

2777

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

2778

"checker", "server_settings"))

2779

for name, typ in (inspect.getmembers

2780

(dbus.service.Object)):

3384

2781

exclude.add(name)

3385

2782

3386

2783

client_dict["encrypted_secret"] = (client

3387

2784

.encrypted_secret)

3388

2785

for attr in client.client_structure:

3389

2786

if attr not in exclude:

3390

2787

client_dict[attr] = getattr(client, attr)

3391

2788

3392

2789

clients[client.name] = client_dict

3393

2790

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

3394

2791

3395

2792

try:

3396

with tempfile.NamedTemporaryFile(

3397

mode='wb',

3398

suffix=".pickle",

3399

prefix='clients-',

3400

dir=os.path.dirname(stored_state_path),

3401

delete=False) as stored_state:

3402

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

3403

protocol=2)

3404

tempname = stored_state.name

2793

with (tempfile.NamedTemporaryFile

2794

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

2795

dir=os.path.dirname(stored_state_path),

2796

delete=False)) as stored_state:

2797

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

2798

tempname=stored_state.name

3405

2799

os.rename(tempname, stored_state_path)

3406

2800

except (IOError, OSError) as e:

3407

2801

if not debug:

3410

2804

except NameError:

3411

2805

pass

3412

2806

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

3413

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

2807

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

3414

2808

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

3415

2809

else:

3416

2810

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

3417

2811

exc_info=e)

3418

2812

raise

3419

2813

3420

2814

# Delete all clients, and settings from config

3421

2815

while tcp_server.clients:

3422

2816

name, client = tcp_server.clients.popitem()

3423

2817

if use_dbus:

3424

2818

client.remove_from_connection()

3425

# Don't signal the disabling

2819

# Don't signal anything except ClientRemoved

3426

2820

client.disable(quiet=True)

3427

# Emit D-Bus signal for removal

3428

2821

if use_dbus:

3429

mandos_dbus_service.client_removed_signal(client)

2822

# Emit D-Bus signal

2823

mandos_dbus_service.ClientRemoved(client

2824

.dbus_object_path,

2825

client.name)

3430

2826

client_settings.clear()

3431

2827

3432

2828

atexit.register(cleanup)

3433

3434

for client in tcp_server.clients.values():

2829

2830

for client in tcp_server.clients.itervalues():

3435

2831

if use_dbus:

3436

# Emit D-Bus signal for adding

3437

mandos_dbus_service.client_added_signal(client)

2832

# Emit D-Bus signal

2833

mandos_dbus_service.ClientAdded(client.dbus_object_path)

3438

2834

# Need to initiate checking of clients

3439

2835

if client.enabled:

3440

2836

client.init_checker()

3441

2837

3442

2838

tcp_server.enable()

3443

2839

tcp_server.server_activate()

3444

2840

3445

2841

# Find out what port we got

3446

2842

if zeroconf:

3447

2843

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

3452

2848

else: # IPv4

3453

2849

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

3454

2850

*tcp_server.socket.getsockname())

3455

3456

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

3457

2851

2852

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

2853

3458

2854

try:

3459

2855

if zeroconf:

3460

2856

# From the Avahi example code

3465

2861

cleanup()

3466

2862

sys.exit(1)

3467

2863

# End of Avahi example code

3468

3469

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

3470

lambda *args, **kwargs:

3471

(tcp_server.handle_request

3472

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

3473

2864

2865

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

2866

lambda *args, **kwargs:

2867

(tcp_server.handle_request

2868

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

2869

3474

2870

logger.debug("Starting main loop")

3475

2871

main_loop.run()

3476

2872

except AvahiError as error:

3485

2881

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

3486

2882

cleanup()

3487

2883

3488

3489

2884

if __name__ == '__main__':

3490

2885

main()