/mandos/release : revision 237.14.1

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

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#

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# Everything else is

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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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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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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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import GnuPGInterface

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try:

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SO_BINDTODEVICE = socket.SO_BINDTODEVICE

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except ImportError:

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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 = "1.7.6"

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stored_state_file = "clients.pickle"

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version = "1.4.1"

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stored_state_path = "/var/lib/mandos/clients.pickle"

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logger = logging.getLogger()

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syslogger = None

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syslogger = (logging.handlers.SysLogHandler

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(facility = logging.handlers.SysLogHandler.LOG_DAEMON,

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

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try:

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if_nametoindex = ctypes.cdll.LoadLibrary(

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

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if_nametoindex = (ctypes.cdll.LoadLibrary

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

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.if_nametoindex)

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except (OSError, AttributeError):

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def if_nametoindex(interface):

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

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

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

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ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

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

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

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struct.pack(str("16s16x"),

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interface))

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interface_index = struct.unpack(str("I"),

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ifreq[16:20])[0]

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return interface_index

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def copy_function(func):

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"""Make a copy of a function"""

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if sys.version_info.major == 2:

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return types.FunctionType(func.func_code,

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func.func_globals,

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func.func_name,

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func.func_defaults,

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func.func_closure)

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else:

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return types.FunctionType(func.__code__,

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func.__globals__,

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func.__name__,

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func.__defaults__,

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func.__closure__)

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def initlogger(debug, level=logging.WARNING):

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def initlogger(level=logging.WARNING):

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"""init logger and add loglevel"""

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global syslogger

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syslogger = (logging.handlers.SysLogHandler(

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facility = logging.handlers.SysLogHandler.LOG_DAEMON,

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address = "/dev/log"))

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syslogger.setFormatter(logging.Formatter

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

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' %(message)s'))

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logger.addHandler(syslogger)

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if debug:

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console = logging.StreamHandler()

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

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' [%(process)d]:'

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' %(levelname)s:'

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' %(message)s'))

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logger.addHandler(console)

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console = logging.StreamHandler()

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

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' [%(process)d]:'

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' %(levelname)s:'

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' %(message)s'))

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logger.addHandler(console)

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logger.setLevel(level)

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class PGPError(Exception):

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"""Exception if encryption/decryption fails"""

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class CryptoError(Exception):

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pass

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class PGPEngine(object):

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class Crypto(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.gnupg = GnuPGInterface.GnuPG()

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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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'--force-mdc',

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'--quiet',

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'--no-use-agent']

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self.gnupg = GnuPGInterface.GnuPG()

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self.gnupg.options.meta_interactive = False

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self.gnupg.options.homedir = self.tempdir

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self.gnupg.options.extra_args.extend(['--force-mdc',

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'--quiet'])

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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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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 password_encode(self, password):

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

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

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

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if len(encoded) > 2048:

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

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

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

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

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return encoded

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

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def encrypt(self, data, password):

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passphrase = self.password_encode(password)

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with tempfile.NamedTemporaryFile(

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dir=self.tempdir) as passfile:

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passfile.write(passphrase)

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passfile.flush()

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

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'--passphrase-file',

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passfile.name]

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+ self.gnupgargs,

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stdin = subprocess.PIPE,

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stdout = subprocess.PIPE,

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stderr = subprocess.PIPE)

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

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if proc.returncode != 0:

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raise PGPError(err)

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self.gnupg.passphrase = self.password_encode(password)

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with open(os.devnull) as devnull:

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try:

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proc = self.gnupg.run(['--symmetric'],

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create_fhs=['stdin', 'stdout'],

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attach_fhs={'stderr': devnull})

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with contextlib.closing(proc.handles['stdin']) as f:

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f.write(data)

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with contextlib.closing(proc.handles['stdout']) as f:

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ciphertext = f.read()

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proc.wait()

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except IOError as e:

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raise CryptoError(e)

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self.gnupg.passphrase = None

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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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passfile.write(passphrase)

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passfile.flush()

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

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'--passphrase-file',

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passfile.name]

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+ self.gnupgargs,

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stdin = subprocess.PIPE,

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stdout = subprocess.PIPE,

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stderr = subprocess.PIPE)

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

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if proc.returncode != 0:

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raise PGPError(err)

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self.gnupg.passphrase = self.password_encode(password)

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with open(os.devnull) as devnull:

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try:

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proc = self.gnupg.run(['--decrypt'],

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create_fhs=['stdin', 'stdout'],

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attach_fhs={'stderr': devnull})

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with contextlib.closing(proc.handles['stdin'] ) as f:

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f.write(data)

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with contextlib.closing(proc.handles['stdout']) as f:

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decrypted_plaintext = f.read()

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proc.wait()

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except IOError as e:

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raise CryptoError(e)

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self.gnupg.passphrase = None

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return decrypted_plaintext

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# Pretend that we have an Avahi module

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class Avahi(object):

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

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

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

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

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PROTO_INET = 0 # avahi-common/address.h

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PROTO_INET6 = 1 # avahi-common/address.h

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DBUS_NAME = "org.freedesktop.Avahi"

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DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"

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DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"

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DBUS_PATH_SERVER = "/"

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def string_array_to_txt_array(self, t):

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

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

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ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h

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ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h

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ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h

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SERVER_INVALID = 0 # avahi-common/defs.h

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SERVER_REGISTERING = 1 # avahi-common/defs.h

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SERVER_RUNNING = 2 # avahi-common/defs.h

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SERVER_COLLISION = 3 # avahi-common/defs.h

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SERVER_FAILURE = 4 # avahi-common/defs.h

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avahi = Avahi()

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class AvahiError(Exception):

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211

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

283

212

self.value = value

284

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

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**kwargs)

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

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def __unicode__(self):

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return unicode(repr(self.value))

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216

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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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222

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Used to optionally bind to the specified interface.

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name: string; Example: 'Mandos'

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type: string; Example: '_mandos._tcp'.

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See <https://www.iana.org/assignments/service-names-port-numbers>

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See <http://www.dns-sd.org/ServiceTypes.html>

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port: integer; what port to announce

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TXT: list of strings; TXT record for the service

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domain: string; Domain to publish on, default to .local if empty.

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server: D-Bus Server

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bus: dbus.SystemBus()

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"""

316

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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):

244

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

245

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

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

247

protocol = avahi.PROTO_UNSPEC, bus = None):

328

248

self.interface = interface

329

249

self.name = name

330

250

self.type = servicetype

339

259

self.server = None

340

260

self.bus = bus

341

261

self.entry_group_state_changed_match = None

342

343

def rename(self, remove=True):

262

def rename(self):

344

263

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

345

264

if self.rename_count >= self.max_renames:

346

265

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

347

266

" after %i retries, exiting.",

348

267

self.rename_count)

349

268

raise AvahiServiceError("Too many renames")

350

self.name = str(

351

self.server.GetAlternativeServiceName(self.name))

352

self.rename_count += 1

269

self.name = unicode(self.server

270

.GetAlternativeServiceName(self.name))

353

271

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

354

272

self.name)

355

if remove:

356

self.remove()

273

self.remove()

357

274

try:

358

275

self.add()

359

276

except dbus.exceptions.DBusException as error:

360

if (error.get_dbus_name()

361

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

362

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

363

return self.rename(remove=False)

364

else:

365

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

366

self.cleanup()

367

os._exit(1)

368

277

logger.critical("DBusException: %s", error)

278

self.cleanup()

279

os._exit(1)

280

self.rename_count += 1

369

281

def remove(self):

370

282

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

371

283

if self.entry_group_state_changed_match is not None:

373

285

self.entry_group_state_changed_match = None

374

286

if self.group is not None:

375

287

self.group.Reset()

376

377

288

def add(self):

378

289

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

379

290

self.remove()

396

307

dbus.UInt16(self.port),

397

308

avahi.string_array_to_txt_array(self.TXT))

398

309

self.group.Commit()

399

400

310

def entry_group_state_changed(self, state, error):

401

311

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

402

312

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

408

318

self.rename()

409

319

elif state == avahi.ENTRY_GROUP_FAILURE:

410

320

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

411

str(error))

412

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

413

321

unicode(error))

322

raise AvahiGroupError("State changed: %s"

323

% unicode(error))

414

324

def cleanup(self):

415

325

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

416

326

if self.group is not None:

421

331

pass

422

332

self.group = None

423

333

self.remove()

424

425

334

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

426

335

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

427

336

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

428

bad_states = {

429

avahi.SERVER_INVALID: "Zeroconf server invalid",

430

avahi.SERVER_REGISTERING: None,

431

avahi.SERVER_COLLISION: "Zeroconf server name collision",

432

avahi.SERVER_FAILURE: "Zeroconf server failure",

433

}

337

bad_states = { avahi.SERVER_INVALID:

338

"Zeroconf server invalid",

339

avahi.SERVER_REGISTERING: None,

340

avahi.SERVER_COLLISION:

341

"Zeroconf server name collision",

342

avahi.SERVER_FAILURE:

343

"Zeroconf server failure" }

434

344

if state in bad_states:

435

345

if bad_states[state] is not None:

436

346

if error is None:

439

349

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

440

350

self.cleanup()

441

351

elif state == avahi.SERVER_RUNNING:

442

try:

443

self.add()

444

except dbus.exceptions.DBusException as error:

445

if (error.get_dbus_name()

446

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

447

logger.info("Local Zeroconf service name"

448

" collision.")

449

return self.rename(remove=False)

450

else:

451

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

452

self.cleanup()

453

os._exit(1)

352

self.add()

454

353

else:

455

354

if error is None:

456

355

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

457

356

else:

458

357

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

459

460

358

def activate(self):

461

359

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

462

360

if self.server is None:

466

364

follow_name_owner_changes=True),

467

365

avahi.DBUS_INTERFACE_SERVER)

468

366

self.server.connect_to_signal("StateChanged",

469

self.server_state_changed)

367

self.server_state_changed)

470

368

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

471

369

472

473

370

class AvahiServiceToSyslog(AvahiService):

474

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

371

def rename(self):

475

372

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

476

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

477

syslogger.setFormatter(logging.Formatter(

478

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

479

.format(self.name)))

373

ret = AvahiService.rename(self)

374

syslogger.setFormatter(logging.Formatter

375

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

376

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

377

% self.name))

480

378

return ret

481

379

482

# Pretend that we have a GnuTLS module

483

class GnuTLS(object):

484

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

485

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

486

487

_library = ctypes.cdll.LoadLibrary(

488

ctypes.util.find_library("gnutls"))

489

_need_version = b"3.3.0"

490

def __init__(self):

491

# Need to use class name "GnuTLS" here, since this method is

492

# called before the assignment to the "gnutls" global variable

493

# happens.

494

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

495

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

496

.format(self._need_version))

497

498

# Unless otherwise indicated, the constants and types below are

499

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

500

501

# Constants

502

E_SUCCESS = 0

503

E_INTERRUPTED = -52

504

E_AGAIN = -28

505

CRT_OPENPGP = 2

506

CLIENT = 2

507

SHUT_RDWR = 0

508

CRD_CERTIFICATE = 1

509

E_NO_CERTIFICATE_FOUND = -49

510

OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h

511

512

# Types

513

class session_int(ctypes.Structure):

514

_fields_ = []

515

session_t = ctypes.POINTER(session_int)

516

class certificate_credentials_st(ctypes.Structure):

517

_fields_ = []

518

certificate_credentials_t = ctypes.POINTER(

519

certificate_credentials_st)

520

certificate_type_t = ctypes.c_int

521

class datum_t(ctypes.Structure):

522

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

523

('size', ctypes.c_uint)]

524

class openpgp_crt_int(ctypes.Structure):

525

_fields_ = []

526

openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)

527

openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h

528

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

529

credentials_type_t = ctypes.c_int

530

transport_ptr_t = ctypes.c_void_p

531

close_request_t = ctypes.c_int

532

533

# Exceptions

534

class Error(Exception):

535

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

536

# exception might be raised from within GnuTLS.__init__,

537

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

538

# global variable has happened.

539

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

540

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

541

# code is passed, convert it to a string with

542

# gnutls.strerror()

543

self.code = code

544

if message is None and code is not None:

545

message = GnuTLS.strerror(code)

546

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

547

message, *args)

548

549

class CertificateSecurityError(Error):

550

pass

551

552

# Classes

553

class Credentials(object):

554

def __init__(self):

555

self._c_object = gnutls.certificate_credentials_t()

556

gnutls.certificate_allocate_credentials(

557

ctypes.byref(self._c_object))

558

self.type = gnutls.CRD_CERTIFICATE

559

560

def __del__(self):

561

gnutls.certificate_free_credentials(self._c_object)

562

563

class ClientSession(object):

564

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

565

self._c_object = gnutls.session_t()

566

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

567

gnutls.set_default_priority(self._c_object)

568

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

569

gnutls.handshake_set_private_extensions(self._c_object,

570

True)

571

self.socket = socket

572

if credentials is None:

573

credentials = gnutls.Credentials()

574

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

575

ctypes.cast(credentials._c_object,

576

ctypes.c_void_p))

577

self.credentials = credentials

578

579

def __del__(self):

580

gnutls.deinit(self._c_object)

581

582

def handshake(self):

583

return gnutls.handshake(self._c_object)

584

585

def send(self, data):

586

data = bytes(data)

587

data_len = len(data)

588

while data_len > 0:

589

data_len -= gnutls.record_send(self._c_object,

590

data[-data_len:],

591

data_len)

592

593

def bye(self):

594

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

595

596

# Error handling functions

597

def _error_code(result):

598

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

599

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

600

if result >= 0:

601

return result

602

if result == gnutls.E_NO_CERTIFICATE_FOUND:

603

raise gnutls.CertificateSecurityError(code = result)

604

raise gnutls.Error(code = result)

605

606

def _retry_on_error(result, func, arguments):

607

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

608

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

609

while result < 0:

610

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

611

return _error_code(result)

612

result = func(*arguments)

613

return result

614

615

# Unless otherwise indicated, the function declarations below are

616

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

617

618

# Functions

619

priority_set_direct = _library.gnutls_priority_set_direct

620

priority_set_direct.argtypes = [session_t, ctypes.c_char_p,

621

ctypes.POINTER(ctypes.c_char_p)]

622

priority_set_direct.restype = _error_code

623

624

init = _library.gnutls_init

625

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

626

init.restype = _error_code

627

628

set_default_priority = _library.gnutls_set_default_priority

629

set_default_priority.argtypes = [session_t]

630

set_default_priority.restype = _error_code

631

632

record_send = _library.gnutls_record_send

633

record_send.argtypes = [session_t, ctypes.c_void_p,

634

ctypes.c_size_t]

635

record_send.restype = ctypes.c_ssize_t

636

record_send.errcheck = _retry_on_error

637

638

certificate_allocate_credentials = (

639

_library.gnutls_certificate_allocate_credentials)

640

certificate_allocate_credentials.argtypes = [

641

ctypes.POINTER(certificate_credentials_t)]

642

certificate_allocate_credentials.restype = _error_code

643

644

certificate_free_credentials = (

645

_library.gnutls_certificate_free_credentials)

646

certificate_free_credentials.argtypes = [certificate_credentials_t]

647

certificate_free_credentials.restype = None

648

649

handshake_set_private_extensions = (

650

_library.gnutls_handshake_set_private_extensions)

651

handshake_set_private_extensions.argtypes = [session_t,

652

ctypes.c_int]

653

handshake_set_private_extensions.restype = None

654

655

credentials_set = _library.gnutls_credentials_set

656

credentials_set.argtypes = [session_t, credentials_type_t,

657

ctypes.c_void_p]

658

credentials_set.restype = _error_code

659

660

strerror = _library.gnutls_strerror

661

strerror.argtypes = [ctypes.c_int]

662

strerror.restype = ctypes.c_char_p

663

664

certificate_type_get = _library.gnutls_certificate_type_get

665

certificate_type_get.argtypes = [session_t]

666

certificate_type_get.restype = _error_code

667

668

certificate_get_peers = _library.gnutls_certificate_get_peers

669

certificate_get_peers.argtypes = [session_t,

670

ctypes.POINTER(ctypes.c_uint)]

671

certificate_get_peers.restype = ctypes.POINTER(datum_t)

672

673

global_set_log_level = _library.gnutls_global_set_log_level

674

global_set_log_level.argtypes = [ctypes.c_int]

675

global_set_log_level.restype = None

676

677

global_set_log_function = _library.gnutls_global_set_log_function

678

global_set_log_function.argtypes = [log_func]

679

global_set_log_function.restype = None

680

681

deinit = _library.gnutls_deinit

682

deinit.argtypes = [session_t]

683

deinit.restype = None

684

685

handshake = _library.gnutls_handshake

686

handshake.argtypes = [session_t]

687

handshake.restype = _error_code

688

handshake.errcheck = _retry_on_error

689

690

transport_set_ptr = _library.gnutls_transport_set_ptr

691

transport_set_ptr.argtypes = [session_t, transport_ptr_t]

692

transport_set_ptr.restype = None

693

694

bye = _library.gnutls_bye

695

bye.argtypes = [session_t, close_request_t]

696

bye.restype = _error_code

697

bye.errcheck = _retry_on_error

698

699

check_version = _library.gnutls_check_version

700

check_version.argtypes = [ctypes.c_char_p]

701

check_version.restype = ctypes.c_char_p

702

703

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

704

705

openpgp_crt_init = _library.gnutls_openpgp_crt_init

706

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

707

openpgp_crt_init.restype = _error_code

708

709

openpgp_crt_import = _library.gnutls_openpgp_crt_import

710

openpgp_crt_import.argtypes = [openpgp_crt_t,

711

ctypes.POINTER(datum_t),

712

openpgp_crt_fmt_t]

713

openpgp_crt_import.restype = _error_code

714

715

openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self

716

openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,

717

ctypes.POINTER(ctypes.c_uint)]

718

openpgp_crt_verify_self.restype = _error_code

719

720

openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit

721

openpgp_crt_deinit.argtypes = [openpgp_crt_t]

722

openpgp_crt_deinit.restype = None

723

724

openpgp_crt_get_fingerprint = (

725

_library.gnutls_openpgp_crt_get_fingerprint)

726

openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,

727

ctypes.c_void_p,

728

ctypes.POINTER(

729

ctypes.c_size_t)]

730

openpgp_crt_get_fingerprint.restype = _error_code

731

732

# Remove non-public functions

733

del _error_code, _retry_on_error

734

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

735

gnutls = GnuTLS()

736

737

def call_pipe(connection, # : multiprocessing.Connection

738

func, *args, **kwargs):

739

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

740

741

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

742

return value on the provided multiprocessing.Connection.

743

"""

744

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

745

connection.close()

746

380

def _timedelta_to_milliseconds(td):

381

"Convert a datetime.timedelta() to milliseconds"

382

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

383

+ (td.seconds * 1000)

384

+ (td.microseconds // 1000))

385

747

386

class Client(object):

748

387

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

749

388

750

389

Attributes:

751

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

390

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

752

391

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

753

392

approval_duration: datetime.timedelta(); Duration of one approval

754

393

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

755

394

to see if the client lives.

756

395

'None' if no process is running.

757

checker_callback_tag: a GLib event source tag, or None

396

checker_callback_tag: a gobject event source tag, or None

758

397

checker_command: string; External command which is run to check

759

398

if client lives. %() expansions are done at

760

399

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

761

400

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

762

checker_initiator_tag: a GLib event source tag, or None

401

checker_initiator_tag: a gobject event source tag, or None

763

402

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

764

403

client_structure: Object describing what attributes a client has

765

404

and is used for storing the client at exit

766

405

current_checker_command: string; current running checker_command

767

disable_initiator_tag: a GLib event source tag, or None

406

disable_initiator_tag: a gobject event source tag, or None

768

407

enabled: bool()

769

408

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

770

409

uniquely identify the client

772

411

interval: datetime.timedelta(); How often to start a new checker

773

412

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

774

413

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

414

775

415

last_checker_status: integer between 0 and 255 reflecting exit

776

416

status of last checker. -1 reflects crashed

777

checker, -2 means no checker completed yet.

778

last_checker_signal: The signal which killed the last checker, if

779

last_checker_status is -1

780

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

417

checker, or None.

418

last_enabled: datetime.datetime(); (UTC)

781

419

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

782

420

D-Bus identifiers

783

421

secret: bytestring; sent verbatim (over TLS) to client

784

422

timeout: datetime.timedelta(); How long from last_checked_ok

785

423

until this client is disabled

786

extended_timeout: extra long timeout when secret has been sent

424

extended_timeout: extra long timeout when password has been sent

787

425

runtime_expansions: Allowed attributes for runtime expansion.

788

426

expires: datetime.datetime(); time (UTC) when a client will be

789

427

disabled, or None

790

server_settings: The server_settings dict from main()

791

428

"""

792

429

793

430

runtime_expansions = ("approval_delay", "approval_duration",

794

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

795

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

796

"last_approval_request", "last_checked_ok",

431

"created", "enabled", "fingerprint",

432

"host", "interval", "last_checked_ok",

797

433

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

798

client_defaults = {

799

"timeout": "PT5M",

800

"extended_timeout": "PT15M",

801

"interval": "PT2M",

802

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

803

"host": "",

804

"approval_delay": "PT0S",

805

"approval_duration": "PT1S",

806

"approved_by_default": "True",

807

"enabled": "True",

808

}

809

810

@staticmethod

811

def config_parser(config):

812

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

813

{ client_name: {setting_name: value, ...}, ...}

814

with exceptions for any special settings as defined above.

815

NOTE: Must be a pure function. Must return the same result

816

value given the same arguments.

817

"""

818

settings = {}

819

for client_name in config.sections():

820

section = dict(config.items(client_name))

821

client = settings[client_name] = {}

822

823

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

824

# Reformat values from string types to Python types

825

client["approved_by_default"] = config.getboolean(

826

client_name, "approved_by_default")

827

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

828

"enabled")

829

830

# Uppercase and remove spaces from fingerprint for later

831

# comparison purposes with return value from the

832

# fingerprint() function

833

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

834

.replace(" ", ""))

835

if "secret" in section:

836

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

837

.encode("utf-8"),

838

"base64")

839

elif "secfile" in section:

840

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

841

(section["secfile"])),

842

"rb") as secfile:

843

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

844

else:

845

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

846

.format(section))

847

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

848

client["extended_timeout"] = string_to_delta(

849

section["extended_timeout"])

850

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

851

client["approval_delay"] = string_to_delta(

852

section["approval_delay"])

853

client["approval_duration"] = string_to_delta(

854

section["approval_duration"])

855

client["checker_command"] = section["checker"]

856

client["last_approval_request"] = None

857

client["last_checked_ok"] = None

858

client["last_checker_status"] = -2

859

860

return settings

861

862

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

434

435

def timeout_milliseconds(self):

436

"Return the 'timeout' attribute in milliseconds"

437

return _timedelta_to_milliseconds(self.timeout)

438

439

def extended_timeout_milliseconds(self):

440

"Return the 'extended_timeout' attribute in milliseconds"

441

return _timedelta_to_milliseconds(self.extended_timeout)

442

443

def interval_milliseconds(self):

444

"Return the 'interval' attribute in milliseconds"

445

return _timedelta_to_milliseconds(self.interval)

446

447

def approval_delay_milliseconds(self):

448

return _timedelta_to_milliseconds(self.approval_delay)

449

450

def __init__(self, name = None, config=None):

451

"""Note: the 'checker' key in 'config' sets the

452

'checker_command' attribute and *not* the 'checker'

453

attribute."""

863

454

self.name = name

864

if server_settings is None:

865

server_settings = {}

866

self.server_settings = server_settings

867

# adding all client settings

868

for setting, value in settings.items():

869

setattr(self, setting, value)

870

871

if self.enabled:

872

if not hasattr(self, "last_enabled"):

873

self.last_enabled = datetime.datetime.utcnow()

874

if not hasattr(self, "expires"):

875

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

876

+ self.timeout)

877

else:

878

self.last_enabled = None

879

self.expires = None

880

455

if config is None:

456

config = {}

881

457

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

458

# Uppercase and remove spaces from fingerprint for later

459

# comparison purposes with return value from the fingerprint()

460

# function

461

self.fingerprint = (config["fingerprint"].upper()

462

.replace(" ", ""))

882

463

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

883

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

884

datetime.datetime.utcnow())

885

886

# attributes specific for this server instance

464

if "secret" in config:

465

self.secret = config["secret"].decode("base64")

466

elif "secfile" in config:

467

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

468

(config["secfile"])),

469

"rb") as secfile:

470

self.secret = secfile.read()

471

else:

472

raise TypeError("No secret or secfile for client %s"

473

% self.name)

474

self.host = config.get("host", "")

475

self.created = datetime.datetime.utcnow()

476

self.enabled = True

477

self.last_approval_request = None

478

self.last_enabled = datetime.datetime.utcnow()

479

self.last_checked_ok = None

480

self.last_checker_status = None

481

self.timeout = string_to_delta(config["timeout"])

482

self.extended_timeout = string_to_delta(config

483

["extended_timeout"])

484

self.interval = string_to_delta(config["interval"])

887

485

self.checker = None

888

486

self.checker_initiator_tag = None

889

487

self.disable_initiator_tag = None

488

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

890

489

self.checker_callback_tag = None

490

self.checker_command = config["checker"]

891

491

self.current_checker_command = None

892

self.approved = None

492

self._approved = None

493

self.approved_by_default = config.get("approved_by_default",

494

True)

893

495

self.approvals_pending = 0

894

self.changedstate = multiprocessing_manager.Condition(

895

multiprocessing_manager.Lock())

896

self.client_structure = [attr

897

for attr in self.__dict__.keys()

496

self.approval_delay = string_to_delta(

497

config["approval_delay"])

498

self.approval_duration = string_to_delta(

499

config["approval_duration"])

500

self.changedstate = (multiprocessing_manager

501

.Condition(multiprocessing_manager

502

.Lock()))

503

self.client_structure = [attr for attr in

504

self.__dict__.iterkeys()

898

505

if not attr.startswith("_")]

899

506

self.client_structure.append("client_structure")

900

507

901

for name, t in inspect.getmembers(

902

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

508

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

509

lambda obj:

510

isinstance(obj,

511

property)):

903

512

if not name.startswith("_"):

904

513

self.client_structure.append(name)

905

514

913

522

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

914

523

# Already enabled

915

524

return

525

self.send_changedstate()

916

526

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

917

527

self.enabled = True

918

528

self.last_enabled = datetime.datetime.utcnow()

919

529

self.init_checker()

920

self.send_changedstate()

921

530

922

531

def disable(self, quiet=True):

923

532

"""Disable this client."""

924

533

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

925

534

return False

926

535

if not quiet:

536

self.send_changedstate()

537

if not quiet:

927

538

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

928

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

929

GLib.source_remove(self.disable_initiator_tag)

539

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

540

gobject.source_remove(self.disable_initiator_tag)

930

541

self.disable_initiator_tag = None

931

542

self.expires = None

932

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

933

GLib.source_remove(self.checker_initiator_tag)

543

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

544

gobject.source_remove(self.checker_initiator_tag)

934

545

self.checker_initiator_tag = None

935

546

self.stop_checker()

936

547

self.enabled = False

937

if not quiet:

938

self.send_changedstate()

939

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

548

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

940

549

return False

941

550

942

551

def __del__(self):

945

554

def init_checker(self):

946

555

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

947

556

# and every interval from then on.

948

if self.checker_initiator_tag is not None:

949

GLib.source_remove(self.checker_initiator_tag)

950

self.checker_initiator_tag = GLib.timeout_add(

951

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

952

self.start_checker)

557

self.checker_initiator_tag = (gobject.timeout_add

558

(self.interval_milliseconds(),

559

self.start_checker))

953

560

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

954

if self.disable_initiator_tag is not None:

955

GLib.source_remove(self.disable_initiator_tag)

956

self.disable_initiator_tag = GLib.timeout_add(

957

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

561

self.disable_initiator_tag = (gobject.timeout_add

562

(self.timeout_milliseconds(),

563

self.disable))

958

564

# Also start a new checker *right now*.

959

565

self.start_checker()

960

566

961

def checker_callback(self, source, condition, connection,

962

command):

567

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

963

568

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

964

569

self.checker_callback_tag = None

965

570

self.checker = None

966

# Read return code from connection (see call_pipe)

967

returncode = connection.recv()

968

connection.close()

969

970

if returncode >= 0:

971

self.last_checker_status = returncode

972

self.last_checker_signal = None

571

if os.WIFEXITED(condition):

572

self.last_checker_status = os.WEXITSTATUS(condition)

973

573

if self.last_checker_status == 0:

974

574

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

975

575

vars(self))

976

576

self.checked_ok()

977

577

else:

978

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

578

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

579

vars(self))

979

580

else:

980

581

self.last_checker_status = -1

981

self.last_checker_signal = -returncode

982

582

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

983

583

vars(self))

984

return False

985

986

def checked_ok(self):

987

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

988

self.last_checked_ok = datetime.datetime.utcnow()

989

self.last_checker_status = 0

990

self.last_checker_signal = None

991

self.bump_timeout()

992

993

def bump_timeout(self, timeout=None):

994

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

584

585

def checked_ok(self, timeout=None):

586

"""Bump up the timeout for this client.

587

588

This should only be called when the client has been seen,

589

alive and well.

590

"""

995

591

if timeout is None:

996

592

timeout = self.timeout

593

self.last_checked_ok = datetime.datetime.utcnow()

997

594

if self.disable_initiator_tag is not None:

998

GLib.source_remove(self.disable_initiator_tag)

999

self.disable_initiator_tag = None

595

gobject.source_remove(self.disable_initiator_tag)

1000

596

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

1001

self.disable_initiator_tag = GLib.timeout_add(

1002

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

597

self.disable_initiator_tag = (gobject.timeout_add

598

(_timedelta_to_milliseconds

599

(timeout), self.disable))

1003

600

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

1004

601

1005

602

def need_approval(self):

1011

608

If a checker already exists, leave it running and do

1012

609

nothing."""

1013

610

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

1014

# did that, and if a checker (for some reason) started running

1015

# slowly and taking more than 'interval' time, then the client

1016

# would inevitably timeout, since no checker would get a

1017

# chance to run to completion. If we instead leave running

611

# did that, then if a checker (for some reason) started

612

# running slowly and taking more than 'interval' time, the

613

# client would inevitably timeout, since no checker would get

614

# a chance to run to completion. If we instead leave running

1018

615

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

1019

616

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

1020

617

# should be.

1021

618

1022

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

1023

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

1024

self.checker.join()

1025

self.checker = None

619

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

620

try:

621

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

622

except (AttributeError, OSError) as error:

623

if (isinstance(error, OSError)

624

and error.errno != errno.ECHILD):

625

raise error

626

else:

627

if pid:

628

logger.warning("Checker was a zombie")

629

gobject.source_remove(self.checker_callback_tag)

630

self.checker_callback(pid, status,

631

self.current_checker_command)

1026

632

# Start a new checker if needed

1027

633

if self.checker is None:

1028

# Escape attributes for the shell

1029

escaped_attrs = {

1030

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

1031

for attr in self.runtime_expansions }

1032

634

try:

1033

command = self.checker_command % escaped_attrs

1034

except TypeError as error:

1035

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

1036

self.checker_command,

1037

exc_info=error)

1038

return True # Try again later

635

# In case checker_command has exactly one % operator

636

command = self.checker_command % self.host

637

except TypeError:

638

# Escape attributes for the shell

639

escaped_attrs = dict(

640

(attr,

641

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

642

errors=

643

'replace')))

644

for attr in

645

self.runtime_expansions)

646

647

try:

648

command = self.checker_command % escaped_attrs

649

except TypeError as error:

650

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

651

' %s', self.checker_command, error)

652

return True # Try again later

1039

653

self.current_checker_command = command

1040

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

1041

self.name)

1042

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

1043

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

1044

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

1045

# always replaced by /dev/null.)

1046

# The exception is when not debugging but nevertheless

1047

# running in the foreground; use the previously

1048

# created wnull.

1049

popen_args = { "close_fds": True,

1050

"shell": True,

1051

"cwd": "/" }

1052

if (not self.server_settings["debug"]

1053

and self.server_settings["foreground"]):

1054

popen_args.update({"stdout": wnull,

1055

"stderr": wnull })

1056

pipe = multiprocessing.Pipe(duplex = False)

1057

self.checker = multiprocessing.Process(

1058

target = call_pipe,

1059

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

1060

kwargs = popen_args)

1061

self.checker.start()

1062

self.checker_callback_tag = GLib.io_add_watch(

1063

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

1064

self.checker_callback, pipe[0], command)

1065

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

654

try:

655

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

656

command, self.name)

657

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

658

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

659

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

660

# always replaced by /dev/null.)

661

self.checker = subprocess.Popen(command,

662

close_fds=True,

663

shell=True, cwd="/")

664

self.checker_callback_tag = (gobject.child_watch_add

665

(self.checker.pid,

666

self.checker_callback,

667

data=command))

668

# The checker may have completed before the gobject

669

# watch was added. Check for this.

670

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

671

if pid:

672

gobject.source_remove(self.checker_callback_tag)

673

self.checker_callback(pid, status, command)

674

except OSError as error:

675

logger.error("Failed to start subprocess: %s",

676

error)

677

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

1066

678

return True

1067

679

1068

680

def stop_checker(self):

1069

681

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

1070

682

if self.checker_callback_tag:

1071

GLib.source_remove(self.checker_callback_tag)

683

gobject.source_remove(self.checker_callback_tag)

1072

684

self.checker_callback_tag = None

1073

685

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

1074

686

return

1075

687

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

1076

self.checker.terminate()

688

try:

689

os.kill(self.checker.pid, signal.SIGTERM)

690

#time.sleep(0.5)

691

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

692

# os.kill(self.checker.pid, signal.SIGKILL)

693

except OSError as error:

694

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

695

raise

1077

696

self.checker = None

1078

697

1079

698

1080

def dbus_service_property(dbus_interface,

1081

signature="v",

1082

access="readwrite",

1083

byte_arrays=False):

699

def dbus_service_property(dbus_interface, signature="v",

700

access="readwrite", byte_arrays=False):

1084

701

"""Decorators for marking methods of a DBusObjectWithProperties to

1085

702

become properties on the D-Bus.

1086

703

1095

712

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

1096

713

if byte_arrays and signature != "ay":

1097

714

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

1098

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

1099

715

" signature %r" % signature)

1100

716

def decorator(func):

1101

717

func._dbus_is_property = True

1102

718

func._dbus_interface = dbus_interface

1107

723

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

1108

724

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

1109

725

return func

1110

1111

return decorator

1112

1113

1114

def dbus_interface_annotations(dbus_interface):

1115

"""Decorator for marking functions returning interface annotations

1116

1117

Usage:

1118

1119

@dbus_interface_annotations("org.example.Interface")

1120

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

1121

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

1122

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

1123

"false"}

1124

"""

1125

1126

def decorator(func):

1127

func._dbus_is_interface = True

1128

func._dbus_interface = dbus_interface

1129

func._dbus_name = dbus_interface

1130

return func

1131

1132

return decorator

1133

1134

1135

def dbus_annotations(annotations):

1136

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

1137

Usage:

1138

1139

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

1140

"org.freedesktop.DBus.Property."

1141

"EmitsChangedSignal": "false"})

1142

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

1143

access="r")

1144

def Property_dbus_property(self):

1145

return dbus.Boolean(False)

1146

1147

See also the DBusObjectWithAnnotations class.

1148

"""

1149

1150

def decorator(func):

1151

func._dbus_annotations = annotations

1152

return func

1153

1154

726

return decorator

1155

727

1156

728

1157

729

class DBusPropertyException(dbus.exceptions.DBusException):

1158

730

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

1159

731

"""

1160

pass

732

def __unicode__(self):

733

return unicode(str(self))

1161

734

1162

735

1163

736

class DBusPropertyAccessException(DBusPropertyException):

1172

745

pass

1173

746

1174

747

1175

class DBusObjectWithAnnotations(dbus.service.Object):

1176

"""A D-Bus object with annotations.

1177

1178

Classes inheriting from this can use the dbus_annotations

1179

decorator to add annotations to methods or signals.

1180

"""

1181

1182

@staticmethod

1183

def _is_dbus_thing(thing):

1184

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

1185

1186

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

1187

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

1188

"""

1189

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

1190

False)

1191

1192

def _get_all_dbus_things(self, thing):

1193

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

1194

"""

1195

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

1196

athing.__get__(self))

1197

for cls in self.__class__.__mro__

1198

for name, athing in

1199

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

1200

1201

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1202

out_signature = "s",

1203

path_keyword = 'object_path',

1204

connection_keyword = 'connection')

1205

def Introspect(self, object_path, connection):

1206

"""Overloading of standard D-Bus method.

1207

1208

Inserts annotation tags on methods and signals.

1209

"""

1210

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

1211

connection)

1212

try:

1213

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

1214

1215

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

1216

# Add annotation tags

1217

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

1218

for tag in if_tag.getElementsByTagName(typ):

1219

annots = dict()

1220

for name, prop in (self.

1221

_get_all_dbus_things(typ)):

1222

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

1223

and prop._dbus_interface

1224

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

1225

annots.update(getattr(

1226

prop, "_dbus_annotations", {}))

1227

for name, value in annots.items():

1228

ann_tag = document.createElement(

1229

"annotation")

1230

ann_tag.setAttribute("name", name)

1231

ann_tag.setAttribute("value", value)

1232

tag.appendChild(ann_tag)

1233

# Add interface annotation tags

1234

for annotation, value in dict(

1235

itertools.chain.from_iterable(

1236

annotations().items()

1237

for name, annotations

1238

in self._get_all_dbus_things("interface")

1239

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

1240

)).items():

1241

ann_tag = document.createElement("annotation")

1242

ann_tag.setAttribute("name", annotation)

1243

ann_tag.setAttribute("value", value)

1244

if_tag.appendChild(ann_tag)

1245

# Fix argument name for the Introspect method itself

1246

if (if_tag.getAttribute("name")

1247

== dbus.INTROSPECTABLE_IFACE):

1248

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

1249

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

1250

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

1251

if (arg.getAttribute("direction")

1252

== "out"):

1253

arg.setAttribute("name",

1254

"xml_data")

1255

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

1256

document.unlink()

1257

except (AttributeError, xml.dom.DOMException,

1258

xml.parsers.expat.ExpatError) as error:

1259

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

1260

exc_info=error)

1261

return xmlstring

1262

1263

1264

class DBusObjectWithProperties(DBusObjectWithAnnotations):

748

class DBusObjectWithProperties(dbus.service.Object):

1265

749

"""A D-Bus object with properties.

1266

750

1267

751

Classes inheriting from this can use the dbus_service_property

1269

753

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

1270

754

"""

1271

755

756

@staticmethod

757

def _is_dbus_property(obj):

758

return getattr(obj, "_dbus_is_property", False)

759

760

def _get_all_dbus_properties(self):

761

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

762

"""

763

return ((prop.__get__(self)._dbus_name, prop.__get__(self))

764

for cls in self.__class__.__mro__

765

for name, prop in

766

inspect.getmembers(cls, self._is_dbus_property))

767

1272

768

def _get_dbus_property(self, interface_name, property_name):

1273

769

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

1274

770

property with the specified name and interface.

1275

771

"""

1276

for cls in self.__class__.__mro__:

1277

for name, value in inspect.getmembers(

1278

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

772

for cls in self.__class__.__mro__:

773

for name, value in (inspect.getmembers

774

(cls, self._is_dbus_property)):

1279

775

if (value._dbus_name == property_name

1280

776

and value._dbus_interface == interface_name):

1281

777

return value.__get__(self)

1282

778

1283

779

# No such property

1284

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

1285

self.dbus_object_path, interface_name, property_name))

1286

1287

@classmethod

1288

def _get_all_interface_names(cls):

1289

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

1290

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

1291

"_dbus_interface", None)

1292

for x in (inspect.getmro(cls))

1293

for attr in dir(x))

1294

if name is not None)

1295

1296

@dbus.service.method(dbus.PROPERTIES_IFACE,

1297

in_signature="ss",

780

raise DBusPropertyNotFound(self.dbus_object_path + ":"

781

+ interface_name + "."

782

+ property_name)

783

784

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

1298

785

out_signature="v")

1299

786

def Get(self, interface_name, property_name):

1300

787

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

1318

805

# The byte_arrays option is not supported yet on

1319

806

# signatures other than "ay".

1320

807

if prop._dbus_signature != "ay":

1321

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

1322

"'ay' signature {!r}"

1323

.format(prop._dbus_signature))

1324

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

1325

for byte in value))

808

raise ValueError

809

value = dbus.ByteArray(''.join(unichr(byte)

810

for byte in value))

1326

811

prop(value)

1327

812

1328

@dbus.service.method(dbus.PROPERTIES_IFACE,

1329

in_signature="s",

813

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

1330

814

out_signature="a{sv}")

1331

815

def GetAll(self, interface_name):

1332

816

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

1335

819

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

1336

820

"""

1337

821

properties = {}

1338

for name, prop in self._get_all_dbus_things("property"):

822

for name, prop in self._get_all_dbus_properties():

1339

823

if (interface_name

1340

824

and interface_name != prop._dbus_interface):

1341

825

# Interface non-empty but did not match

1347

831

if not hasattr(value, "variant_level"):

1348

832

properties[name] = value

1349

833

continue

1350

properties[name] = type(value)(

1351

value, variant_level = value.variant_level + 1)

834

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

835

value.variant_level+1)

1352

836

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

1353

837

1354

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

1355

def PropertiesChanged(self, interface_name, changed_properties,

1356

invalidated_properties):

1357

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

1358

standard.

1359

"""

1360

pass

1361

1362

838

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1363

839

out_signature="s",

1364

840

path_keyword='object_path',

1365

841

connection_keyword='connection')

1366

842

def Introspect(self, object_path, connection):

1367

"""Overloading of standard D-Bus method.

1368

1369

Inserts property tags and interface annotation tags.

843

"""Standard D-Bus method, overloaded to insert property tags.

1370

844

"""

1371

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1372

object_path,

1373

connection)

845

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

846

connection)

1374

847

try:

1375

848

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

1376

1377

849

def make_tag(document, name, prop):

1378

850

e = document.createElement("property")

1379

851

e.setAttribute("name", name)

1380

852

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

1381

853

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

1382

854

return e

1383

1384

855

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

1385

# Add property tags

1386

856

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

1387

857

for name, prop

1388

in self._get_all_dbus_things("property")

858

in self._get_all_dbus_properties()

1389

859

if prop._dbus_interface

1390

860

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

1391

861

if_tag.appendChild(tag)

1392

# Add annotation tags for properties

1393

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

1394

annots = dict()

1395

for name, prop in self._get_all_dbus_things(

1396

"property"):

1397

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

1398

and prop._dbus_interface

1399

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

1400

annots.update(getattr(

1401

prop, "_dbus_annotations", {}))

1402

for name, value in annots.items():

1403

ann_tag = document.createElement(

1404

"annotation")

1405

ann_tag.setAttribute("name", name)

1406

ann_tag.setAttribute("value", value)

1407

tag.appendChild(ann_tag)

1408

862

# Add the names to the return values for the

1409

863

# "org.freedesktop.DBus.Properties" methods

1410

864

if (if_tag.getAttribute("name")

1425

879

except (AttributeError, xml.dom.DOMException,

1426

880

xml.parsers.expat.ExpatError) as error:

1427

881

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

1428

exc_info=error)

1429

return xmlstring

1430

1431

try:

1432

dbus.OBJECT_MANAGER_IFACE

1433

except AttributeError:

1434

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

1435

1436

class DBusObjectWithObjectManager(DBusObjectWithAnnotations):

1437

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

1438

1439

Classes inheriting from this exposes the standard

1440

GetManagedObjects call and the InterfacesAdded and

1441

InterfacesRemoved signals on the standard

1442

"org.freedesktop.DBus.ObjectManager" interface.

1443

1444

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

1445

manually.

1446

"""

1447

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

1448

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

1449

def GetManagedObjects(self):

1450

"""This function must be overridden"""

1451

raise NotImplementedError()

1452

1453

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,

1454

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

1455

def InterfacesAdded(self, object_path, interfaces_and_properties):

1456

pass

1457

1458

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

1459

def InterfacesRemoved(self, object_path, interfaces):

1460

pass

1461

1462

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1463

out_signature = "s",

1464

path_keyword = 'object_path',

1465

connection_keyword = 'connection')

1466

def Introspect(self, object_path, connection):

1467

"""Overloading of standard D-Bus method.

1468

1469

Override return argument name of GetManagedObjects to be

1470

"objpath_interfaces_and_properties"

1471

"""

1472

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1473

object_path,

1474

connection)

1475

try:

1476

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

1477

1478

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

1479

# Fix argument name for the GetManagedObjects method

1480

if (if_tag.getAttribute("name")

1481

== dbus.OBJECT_MANAGER_IFACE):

1482

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

1483

if (cn.getAttribute("name")

1484

== "GetManagedObjects"):

1485

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

1486

if (arg.getAttribute("direction")

1487

== "out"):

1488

arg.setAttribute(

1489

"name",

1490

"objpath_interfaces"

1491

"_and_properties")

1492

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

1493

document.unlink()

1494

except (AttributeError, xml.dom.DOMException,

1495

xml.parsers.expat.ExpatError) as error:

1496

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

1497

exc_info = error)

1498

return xmlstring

1499

1500

def datetime_to_dbus(dt, variant_level=0):

882

error)

883

return xmlstring

884

885

886

def datetime_to_dbus (dt, variant_level=0):

1501

887

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

1502

888

if dt is None:

1503

889

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

1504

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

1505

1506

1507

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1508

"""A class decorator; applied to a subclass of

1509

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

1510

interface names according to the "alt_interface_names" mapping.

1511

Usage:

1512

1513

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

1514

"net.example.AlternateInterface"})

1515

class SampleDBusObject(dbus.service.Object):

1516

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

1517

def SampleDBusMethod():

1518

pass

1519

1520

The above "SampleDBusMethod" on "SampleDBusObject" will be

1521

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

1522

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

1523

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

1524

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

1525

1526

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

1527

(from DBusObjectWithProperties) and interfaces (from the

1528

dbus_interface_annotations decorator).

890

return dbus.String(dt.isoformat(),

891

variant_level=variant_level)

892

893

894

class AlternateDBusNamesMetaclass(DBusObjectWithProperties

895

.__metaclass__):

896

"""Applied to an empty subclass of a D-Bus object, this metaclass

897

will add additional D-Bus attributes matching a certain pattern.

1529

898

"""

1530

1531

def wrapper(cls):

1532

for orig_interface_name, alt_interface_name in (

1533

alt_interface_names.items()):

1534

attr = {}

1535

interface_names = set()

1536

# Go though all attributes of the class

1537

for attrname, attribute in inspect.getmembers(cls):

899

def __new__(mcs, name, bases, attr):

900

# Go through all the base classes which could have D-Bus

901

# methods, signals, or properties in them

902

for base in (b for b in bases

903

if issubclass(b, dbus.service.Object)):

904

# Go though all attributes of the base class

905

for attrname, attribute in inspect.getmembers(base):

1538

906

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

1539

907

# with the wrong interface name

1540

908

if (not hasattr(attribute, "_dbus_interface")

1541

or not attribute._dbus_interface.startswith(

1542

orig_interface_name)):

909

or not attribute._dbus_interface

910

.startswith("se.recompile.Mandos")):

1543

911

continue

1544

912

# Create an alternate D-Bus interface name based on

1545

913

# the current name

1546

alt_interface = attribute._dbus_interface.replace(

1547

orig_interface_name, alt_interface_name)

1548

interface_names.add(alt_interface)

914

alt_interface = (attribute._dbus_interface

915

.replace("se.recompile.Mandos",

916

"se.bsnet.fukt.Mandos"))

1549

917

# Is this a D-Bus signal?

1550

918

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

1551

# Extract the original non-method undecorated

1552

# function by black magic

1553

if sys.version_info.major == 2:

1554

nonmethod_func = (dict(

919

# Extract the original non-method function by

920

# black magic

921

nonmethod_func = (dict(

1555

922

zip(attribute.func_code.co_freevars,

1556

attribute.__closure__))

1557

["func"].cell_contents)

1558

else:

1559

nonmethod_func = (dict(

1560

zip(attribute.__code__.co_freevars,

1561

attribute.__closure__))

1562

["func"].cell_contents)

923

attribute.__closure__))["func"]

924

.cell_contents)

1563

925

# Create a new, but exactly alike, function

1564

926

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

1565

927

# with the alternate D-Bus interface name

1566

new_function = copy_function(nonmethod_func)

1567

new_function = (dbus.service.signal(

1568

alt_interface,

1569

attribute._dbus_signature)(new_function))

1570

# Copy annotations, if any

1571

try:

1572

new_function._dbus_annotations = dict(

1573

attribute._dbus_annotations)

1574

except AttributeError:

1575

pass

928

new_function = (dbus.service.signal

929

(alt_interface,

930

attribute._dbus_signature)

931

(types.FunctionType(

932

nonmethod_func.func_code,

933

nonmethod_func.func_globals,

934

nonmethod_func.func_name,

935

nonmethod_func.func_defaults,

936

nonmethod_func.func_closure)))

1576

937

# Define a creator of a function to call both the

1577

# original and alternate functions, so both the

1578

# original and alternate signals gets sent when

1579

# the function is called

938

# old and new functions, so both the old and new

939

# signals gets sent when the function is called

1580

940

def fixscope(func1, func2):

1581

941

"""This function is a scope container to pass

1582

942

func1 and func2 to the "call_both" function

1583

943

outside of its arguments"""

1584

1585

@functools.wraps(func2)

1586

944

def call_both(*args, **kwargs):

1587

945

"""This function will emit two D-Bus

1588

946

signals by calling func1 and func2"""

1589

947

func1(*args, **kwargs)

1590

948

func2(*args, **kwargs)

1591

# Make wrapper function look like a D-Bus signal

1592

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

1593

if name.startswith("_dbus_"):

1594

setattr(call_both, name, attr)

1595

1596

949

return call_both

1597

950

# Create the "call_both" function and add it to

1598

951

# the class

1599

attr[attrname] = fixscope(attribute, new_function)

952

attr[attrname] = fixscope(attribute,

953

new_function)

1600

954

# Is this a D-Bus method?

1601

955

elif getattr(attribute, "_dbus_is_method", False):

1602

956

# Create a new, but exactly alike, function

1603

957

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

1604

958

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

1605

959

# to the class.

1606

attr[attrname] = (

1607

dbus.service.method(

1608

alt_interface,

1609

attribute._dbus_in_signature,

1610

attribute._dbus_out_signature)

1611

(copy_function(attribute)))

1612

# Copy annotations, if any

1613

try:

1614

attr[attrname]._dbus_annotations = dict(

1615

attribute._dbus_annotations)

1616

except AttributeError:

1617

pass

960

attr[attrname] = (dbus.service.method

961

(alt_interface,

962

attribute._dbus_in_signature,

963

attribute._dbus_out_signature)

964

(types.FunctionType

965

(attribute.func_code,

966

attribute.func_globals,

967

attribute.func_name,

968

attribute.func_defaults,

969

attribute.func_closure)))

1618

970

# Is this a D-Bus property?

1619

971

elif getattr(attribute, "_dbus_is_property", False):

1620

972

# Create a new, but exactly alike, function

1621

973

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

1622

974

# property with the alternate D-Bus interface

1623

975

# name. Add it to the class.

1624

attr[attrname] = (dbus_service_property(

1625

alt_interface, attribute._dbus_signature,

1626

attribute._dbus_access,

1627

attribute._dbus_get_args_options

1628

["byte_arrays"])

1629

(copy_function(attribute)))

1630

# Copy annotations, if any

1631

try:

1632

attr[attrname]._dbus_annotations = dict(

1633

attribute._dbus_annotations)

1634

except AttributeError:

1635

pass

1636

# Is this a D-Bus interface?

1637

elif getattr(attribute, "_dbus_is_interface", False):

1638

# Create a new, but exactly alike, function

1639

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

1640

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

1641

# to the class.

1642

attr[attrname] = (

1643

dbus_interface_annotations(alt_interface)

1644

(copy_function(attribute)))

1645

if deprecate:

1646

# Deprecate all alternate interfaces

1647

iname="_AlternateDBusNames_interface_annotation{}"

1648

for interface_name in interface_names:

1649

1650

@dbus_interface_annotations(interface_name)

1651

def func(self):

1652

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

1653

"true" }

1654

# Find an unused name

1655

for aname in (iname.format(i)

1656

for i in itertools.count()):

1657

if aname not in attr:

1658

attr[aname] = func

1659

break

1660

if interface_names:

1661

# Replace the class with a new subclass of it with

1662

# methods, signals, etc. as created above.

1663

if sys.version_info.major == 2:

1664

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

1665

(cls, ), attr)

1666

else:

1667

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

1668

(cls, ), attr)

1669

return cls

1670

1671

return wrapper

1672

1673

1674

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

1675

"se.bsnet.fukt.Mandos"})

976

attr[attrname] = (dbus_service_property

977

(alt_interface,

978

attribute._dbus_signature,

979

attribute._dbus_access,

980

attribute

981

._dbus_get_args_options

982

["byte_arrays"])

983

(types.FunctionType

984

(attribute.func_code,

985

attribute.func_globals,

986

attribute.func_name,

987

attribute.func_defaults,

988

attribute.func_closure)))

989

return type.__new__(mcs, name, bases, attr)

990

991

1676

992

class ClientDBus(Client, DBusObjectWithProperties):

1677

993

"""A Client class using D-Bus

1678

994

1682

998

"""

1683

999

1684

1000

runtime_expansions = (Client.runtime_expansions

1685

+ ("dbus_object_path", ))

1686

1687

_interface = "se.recompile.Mandos.Client"

1001

+ ("dbus_object_path",))

1688

1002

1689

1003

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

1690

1004

1691

1005

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

1692

1006

self.bus = bus

1693

1007

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

1008

1009

self._approvals_pending = 0

1694

1010

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

1695

1011

# the D-Bus

1696

client_object_name = str(self.name).translate(

1012

client_object_name = unicode(self.name).translate(

1697

1013

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

1698

1014

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

1699

self.dbus_object_path = dbus.ObjectPath(

1700

"/clients/" + client_object_name)

1015

self.dbus_object_path = (dbus.ObjectPath

1016

("/clients/" + client_object_name))

1701

1017

DBusObjectWithProperties.__init__(self, self.bus,

1702

1018

self.dbus_object_path)

1703

1704

def notifychangeproperty(transform_func, dbus_name,

1705

type_func=lambda x: x,

1706

variant_level=1,

1707

invalidate_only=False,

1708

_interface=_interface):

1019

1020

def notifychangeproperty(transform_func,

1021

dbus_name, type_func=lambda x: x,

1022

variant_level=1):

1709

1023

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

1710

1024

its changes to DBus.

1711

1025

1716

1030

to the D-Bus. Default: no transform

1717

1031

variant_level: D-Bus variant level. Default: 1

1718

1032

"""

1719

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

1720

1033

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

1721

1034

def setter(self, value):

1722

1035

if hasattr(self, "dbus_object_path"):

1723

1036

if (not hasattr(self, attrname) or

1724

1037

type_func(getattr(self, attrname, None))

1725

1038

!= type_func(value)):

1726

if invalidate_only:

1727

self.PropertiesChanged(

1728

_interface, dbus.Dictionary(),

1729

dbus.Array((dbus_name, )))

1730

else:

1731

dbus_value = transform_func(

1732

type_func(value),

1733

variant_level = variant_level)

1734

self.PropertyChanged(dbus.String(dbus_name),

1735

dbus_value)

1736

self.PropertiesChanged(

1737

_interface,

1738

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

1739

dbus_value }),

1740

dbus.Array())

1039

dbus_value = transform_func(type_func(value),

1040

variant_level

1041

=variant_level)

1042

self.PropertyChanged(dbus.String(dbus_name),

1043

dbus_value)

1741

1044

setattr(self, attrname, value)

1742

1045

1743

1046

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

1744

1047

1048

1745

1049

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1746

1050

approvals_pending = notifychangeproperty(dbus.Boolean,

1747

1051

"ApprovalPending",

1749

1053

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

1750

1054

last_enabled = notifychangeproperty(datetime_to_dbus,

1751

1055

"LastEnabled")

1752

checker = notifychangeproperty(

1753

dbus.Boolean, "CheckerRunning",

1754

type_func = lambda checker: checker is not None)

1056

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

1057

type_func = lambda checker:

1058

checker is not None)

1755

1059

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1756

1060

"LastCheckedOK")

1757

last_checker_status = notifychangeproperty(dbus.Int16,

1758

"LastCheckerStatus")

1759

1061

last_approval_request = notifychangeproperty(

1760

1062

datetime_to_dbus, "LastApprovalRequest")

1761

1063

approved_by_default = notifychangeproperty(dbus.Boolean,

1762

1064

"ApprovedByDefault")

1763

approval_delay = notifychangeproperty(

1764

dbus.UInt64, "ApprovalDelay",

1765

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

1065

approval_delay = notifychangeproperty(dbus.UInt16,

1066

"ApprovalDelay",

1067

type_func =

1068

_timedelta_to_milliseconds)

1766

1069

approval_duration = notifychangeproperty(

1767

dbus.UInt64, "ApprovalDuration",

1768

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

1070

dbus.UInt16, "ApprovalDuration",

1071

type_func = _timedelta_to_milliseconds)

1769

1072

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

1770

timeout = notifychangeproperty(

1771

dbus.UInt64, "Timeout",

1772

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

1073

timeout = notifychangeproperty(dbus.UInt16, "Timeout",

1074

type_func =

1075

_timedelta_to_milliseconds)

1773

1076

extended_timeout = notifychangeproperty(

1774

dbus.UInt64, "ExtendedTimeout",

1775

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

1776

interval = notifychangeproperty(

1777

dbus.UInt64, "Interval",

1778

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

1077

dbus.UInt16, "ExtendedTimeout",

1078

type_func = _timedelta_to_milliseconds)

1079

interval = notifychangeproperty(dbus.UInt16,

1080

"Interval",

1081

type_func =

1082

_timedelta_to_milliseconds)

1779

1083

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

1780

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

1781

invalidate_only=True)

1782

1084

1783

1085

del notifychangeproperty

1784

1086

1791

1093

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

1792

1094

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

1793

1095

1794

def checker_callback(self, source, condition,

1795

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

1796

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

1797

connection, command, *args,

1798

**kwargs)

1799

exitstatus = self.last_checker_status

1800

if exitstatus >= 0:

1096

def checker_callback(self, pid, condition, command,

1097

*args, **kwargs):

1098

self.checker_callback_tag = None

1099

self.checker = None

1100

if os.WIFEXITED(condition):

1101

exitstatus = os.WEXITSTATUS(condition)

1801

1102

# Emit D-Bus signal

1802

1103

self.CheckerCompleted(dbus.Int16(exitstatus),

1803

# This is specific to GNU libC

1804

dbus.Int64(exitstatus << 8),

1104

dbus.Int64(condition),

1805

1105

dbus.String(command))

1806

1106

else:

1807

1107

# Emit D-Bus signal

1808

1108

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

1809

dbus.Int64(

1810

# This is specific to GNU libC

1811

(exitstatus << 8)

1812

| self.last_checker_signal),

1109

dbus.Int64(condition),

1813

1110

dbus.String(command))

1814

return ret

1111

1112

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

1113

*args, **kwargs)

1815

1114

1816

1115

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

1817

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

1116

old_checker = self.checker

1117

if self.checker is not None:

1118

old_checker_pid = self.checker.pid

1119

else:

1120

old_checker_pid = None

1818

1121

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

1819

1122

# Only if new checker process was started

1820

1123

if (self.checker is not None

1824

1127

return r

1825

1128

1826

1129

def _reset_approved(self):

1827

self.approved = None

1130

self._approved = None

1828

1131

return False

1829

1132

1830

1133

def approve(self, value=True):

1831

self.approved = value

1832

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

1833

* 1000), self._reset_approved)

1834

1134

self.send_changedstate()

1135

self._approved = value

1136

gobject.timeout_add(_timedelta_to_milliseconds

1137

(self.approval_duration),

1138

self._reset_approved)

1139

1835

1140

1836

1141

## D-Bus methods, signals & properties

1837

1838

## Interfaces

1142

_interface = "se.recompile.Mandos.Client"

1839

1143

1840

1144

## Signals

1841

1145

1852

1156

pass

1853

1157

1854

1158

# PropertyChanged - signal

1855

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

1856

1159

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

1857

1160

def PropertyChanged(self, property, value):

1858

1161

"D-Bus signal"

1879

1182

"D-Bus signal"

1880

1183

return self.need_approval()

1881

1184

1185

# NeRwequest - signal

1186

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

1187

def NewRequest(self, ip):

1188

"""D-Bus signal

1189

Is sent after a client request a password.

1190

"""

1191

pass

1192

1882

1193

## Methods

1883

1194

1884

1195

# Approve - method

1892

1203

self.checked_ok()

1893

1204

1894

1205

# Enable - method

1895

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

1896

1206

@dbus.service.method(_interface)

1897

1207

def Enable(self):

1898

1208

"D-Bus method"

1899

1209

self.enable()

1900

1210

1901

1211

# StartChecker - method

1902

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

1903

1212

@dbus.service.method(_interface)

1904

1213

def StartChecker(self):

1905

1214

"D-Bus method"

1906

1215

self.start_checker()

1907

1216

1908

1217

# Disable - method

1909

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

1910

1218

@dbus.service.method(_interface)

1911

1219

def Disable(self):

1912

1220

"D-Bus method"

1913

1221

self.disable()

1914

1222

1915

1223

# StopChecker - method

1916

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

1917

1224

@dbus.service.method(_interface)

1918

1225

def StopChecker(self):

1919

1226

self.stop_checker()

1926

1233

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

1927

1234

1928

1235

# ApprovedByDefault - property

1929

@dbus_service_property(_interface,

1930

signature="b",

1236

@dbus_service_property(_interface, signature="b",

1931

1237

access="readwrite")

1932

1238

def ApprovedByDefault_dbus_property(self, value=None):

1933

1239

if value is None: # get

1935

1241

self.approved_by_default = bool(value)

1936

1242

1937

1243

# ApprovalDelay - property

1938

@dbus_service_property(_interface,

1939

signature="t",

1244

@dbus_service_property(_interface, signature="t",

1940

1245

access="readwrite")

1941

1246

def ApprovalDelay_dbus_property(self, value=None):

1942

1247

if value is None: # get

1943

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

1944

* 1000)

1248

return dbus.UInt64(self.approval_delay_milliseconds())

1945

1249

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

1946

1250

1947

1251

# ApprovalDuration - property

1948

@dbus_service_property(_interface,

1949

signature="t",

1252

@dbus_service_property(_interface, signature="t",

1950

1253

access="readwrite")

1951

1254

def ApprovalDuration_dbus_property(self, value=None):

1952

1255

if value is None: # get

1953

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

1954

* 1000)

1256

return dbus.UInt64(_timedelta_to_milliseconds(

1257

self.approval_duration))

1955

1258

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

1956

1259

1957

1260

# Name - property

1958

@dbus_annotations(

1959

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

1960

1261

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

1961

1262

def Name_dbus_property(self):

1962

1263

return dbus.String(self.name)

1963

1264

1964

1265

# Fingerprint - property

1965

@dbus_annotations(

1966

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

1967

1266

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

1968

1267

def Fingerprint_dbus_property(self):

1969

1268

return dbus.String(self.fingerprint)

1970

1269

1971

1270

# Host - property

1972

@dbus_service_property(_interface,

1973

signature="s",

1271

@dbus_service_property(_interface, signature="s",

1974

1272

access="readwrite")

1975

1273

def Host_dbus_property(self, value=None):

1976

1274

if value is None: # get

1977

1275

return dbus.String(self.host)

1978

self.host = str(value)

1276

self.host = value

1979

1277

1980

1278

# Created - property

1981

@dbus_annotations(

1982

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

1983

1279

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

1984

1280

def Created_dbus_property(self):

1985

return datetime_to_dbus(self.created)

1281

return dbus.String(datetime_to_dbus(self.created))

1986

1282

1987

1283

# LastEnabled - property

1988

1284

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

1990

1286

return datetime_to_dbus(self.last_enabled)

1991

1287

1992

1288

# Enabled - property

1993

@dbus_service_property(_interface,

1994

signature="b",

1289

@dbus_service_property(_interface, signature="b",

1995

1290

access="readwrite")

1996

1291

def Enabled_dbus_property(self, value=None):

1997

1292

if value is None: # get

2002

1297

self.disable()

2003

1298

2004

1299

# LastCheckedOK - property

2005

@dbus_service_property(_interface,

2006

signature="s",

1300

@dbus_service_property(_interface, signature="s",

2007

1301

access="readwrite")

2008

1302

def LastCheckedOK_dbus_property(self, value=None):

2009

1303

if value is not None:

2011

1305

return

2012

1306

return datetime_to_dbus(self.last_checked_ok)

2013

1307

2014

# LastCheckerStatus - property

2015

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

2016

def LastCheckerStatus_dbus_property(self):

2017

return dbus.Int16(self.last_checker_status)

2018

2019

1308

# Expires - property

2020

1309

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

2021

1310

def Expires_dbus_property(self):

2027

1316

return datetime_to_dbus(self.last_approval_request)

2028

1317

2029

1318

# Timeout - property

2030

@dbus_service_property(_interface,

2031

signature="t",

1319

@dbus_service_property(_interface, signature="t",

2032

1320

access="readwrite")

2033

1321

def Timeout_dbus_property(self, value=None):

2034

1322

if value is None: # get

2035

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

2036

old_timeout = self.timeout

1323

return dbus.UInt64(self.timeout_milliseconds())

2037

1324

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

2038

# Reschedule disabling

2039

if self.enabled:

2040

now = datetime.datetime.utcnow()

2041

self.expires += self.timeout - old_timeout

2042

if self.expires <= now:

2043

# The timeout has passed

2044

self.disable()

2045

else:

2046

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

2047

is None):

2048

return

2049

GLib.source_remove(self.disable_initiator_tag)

2050

self.disable_initiator_tag = GLib.timeout_add(

2051

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

2052

self.disable)

1325

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

1326

return

1327

# Reschedule timeout

1328

gobject.source_remove(self.disable_initiator_tag)

1329

self.disable_initiator_tag = None

1330

self.expires = None

1331

time_to_die = _timedelta_to_milliseconds((self

1332

.last_checked_ok

1333

+ self.timeout)

1334

- datetime.datetime

1335

.utcnow())

1336

if time_to_die <= 0:

1337

# The timeout has passed

1338

self.disable()

1339

else:

1340

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

1341

+ datetime.timedelta(milliseconds =

1342

time_to_die))

1343

self.disable_initiator_tag = (gobject.timeout_add

1344

(time_to_die, self.disable))

2053

1345

2054

1346

# ExtendedTimeout - property

2055

@dbus_service_property(_interface,

2056

signature="t",

1347

@dbus_service_property(_interface, signature="t",

2057

1348

access="readwrite")

2058

1349

def ExtendedTimeout_dbus_property(self, value=None):

2059

1350

if value is None: # get

2060

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

2061

* 1000)

1351

return dbus.UInt64(self.extended_timeout_milliseconds())

2062

1352

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

2063

1353

2064

1354

# Interval - property

2065

@dbus_service_property(_interface,

2066

signature="t",

1355

@dbus_service_property(_interface, signature="t",

2067

1356

access="readwrite")

2068

1357

def Interval_dbus_property(self, value=None):

2069

1358

if value is None: # get

2070

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

1359

return dbus.UInt64(self.interval_milliseconds())

2071

1360

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

2072

1361

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

2073

1362

return

2074

if self.enabled:

2075

# Reschedule checker run

2076

GLib.source_remove(self.checker_initiator_tag)

2077

self.checker_initiator_tag = GLib.timeout_add(

2078

value, self.start_checker)

2079

self.start_checker() # Start one now, too

1363

# Reschedule checker run

1364

gobject.source_remove(self.checker_initiator_tag)

1365

self.checker_initiator_tag = (gobject.timeout_add

1366

(value, self.start_checker))

1367

self.start_checker() # Start one now, too

2080

1368

2081

1369

# Checker - property

2082

@dbus_service_property(_interface,

2083

signature="s",

1370

@dbus_service_property(_interface, signature="s",

2084

1371

access="readwrite")

2085

1372

def Checker_dbus_property(self, value=None):

2086

1373

if value is None: # get

2087

1374

return dbus.String(self.checker_command)

2088

self.checker_command = str(value)

1375

self.checker_command = value

2089

1376

2090

1377

# CheckerRunning - property

2091

@dbus_service_property(_interface,

2092

signature="b",

1378

@dbus_service_property(_interface, signature="b",

2093

1379

access="readwrite")

2094

1380

def CheckerRunning_dbus_property(self, value=None):

2095

1381

if value is None: # get

2100

1386

self.stop_checker()

2101

1387

2102

1388

# ObjectPath - property

2103

@dbus_annotations(

2104

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

2105

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

2106

1389

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

2107

1390

def ObjectPath_dbus_property(self):

2108

1391

return self.dbus_object_path # is already a dbus.ObjectPath

2109

1392

2110

1393

# Secret = property

2111

@dbus_annotations(

2112

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

2113

"invalidates"})

2114

@dbus_service_property(_interface,

2115

signature="ay",

2116

access="write",

2117

byte_arrays=True)

1394

@dbus_service_property(_interface, signature="ay",

1395

access="write", byte_arrays=True)

2118

1396

def Secret_dbus_property(self, value):

2119

self.secret = bytes(value)

1397

self.secret = str(value)

2120

1398

2121

1399

del _interface

2122

1400

2126

1404

self._pipe = child_pipe

2127

1405

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

2128

1406

if not self._pipe.recv():

2129

raise KeyError(fpr)

1407

raise KeyError()

2130

1408

2131

1409

def __getattribute__(self, name):

2132

if name == '_pipe':

1410

if(name == '_pipe'):

2133

1411

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

2134

1412

self._pipe.send(('getattr', name))

2135

1413

data = self._pipe.recv()

2136

1414

if data[0] == 'data':

2137

1415

return data[1]

2138

1416

if data[0] == 'function':

2139

2140

1417

def func(*args, **kwargs):

2141

1418

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

2142

1419

return self._pipe.recv()[1]

2143

2144

1420

return func

2145

1421

2146

1422

def __setattr__(self, name, value):

2147

if name == '_pipe':

1423

if(name == '_pipe'):

2148

1424

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

2149

1425

self._pipe.send(('setattr', name, value))

2150

1426

2151

1427

1428

class ClientDBusTransitional(ClientDBus):

1429

__metaclass__ = AlternateDBusNamesMetaclass

1430

1431

2152

1432

class ClientHandler(socketserver.BaseRequestHandler, object):

2153

1433

"""A class to handle client connections.

2154

1434

2158

1438

def handle(self):

2159

1439

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

2160

1440

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

2161

str(self.client_address))

1441

unicode(self.client_address))

2162

1442

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

2163

1443

self.server.child_pipe.fileno())

2164

1444

2165

session = gnutls.ClientSession(self.request)

1445

session = (gnutls.connection

1446

.ClientSession(self.request,

1447

gnutls.connection

1448

.X509Credentials()))

1449

1450

# Note: gnutls.connection.X509Credentials is really a

1451

# generic GnuTLS certificate credentials object so long as

1452

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

1453

# here despite using OpenPGP certificates.

2166

1454

2167

1455

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

2168

1456

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

2172

1460

priority = self.server.gnutls_priority

2173

1461

if priority is None:

2174

1462

priority = "NORMAL"

2175

gnutls.priority_set_direct(session._c_object, priority,

2176

None)

1463

(gnutls.library.functions

1464

.gnutls_priority_set_direct(session._c_object,

1465

priority, None))

2177

1466

2178

1467

# Start communication using the Mandos protocol

2179

1468

# Get protocol number

2181

1470

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

2182

1471

try:

2183

1472

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

2184

raise RuntimeError(line)

1473

raise RuntimeError

2185

1474

except (ValueError, IndexError, RuntimeError) as error:

2186

1475

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

2187

1476

return

2189

1478

# Start GnuTLS connection

2190

1479

try:

2191

1480

session.handshake()

2192

except gnutls.Error as error:

1481

except gnutls.errors.GNUTLSError as error:

2193

1482

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

2194

1483

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

2195

1484

# established. Just abandon the request.

2199

1488

approval_required = False

2200

1489

try:

2201

1490

try:

2202

fpr = self.fingerprint(

2203

self.peer_certificate(session))

2204

except (TypeError, gnutls.Error) as error:

1491

fpr = self.fingerprint(self.peer_certificate

1492

(session))

1493

except (TypeError,

1494

gnutls.errors.GNUTLSError) as error:

2205

1495

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

2206

1496

return

2207

1497

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

1498

if self.server.use_dbus:

1499

# Emit D-Bus signal

1500

client.NewRequest(str(self.client_address))

2208

1501

2209

1502

try:

2210

1503

client = ProxyClient(child_pipe, fpr,

2220

1513

while True:

2221

1514

if not client.enabled:

2222

1515

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

2223

client.name)

1516

client.name)

2224

1517

if self.server.use_dbus:

2225

1518

# Emit D-Bus signal

2226

1519

client.Rejected("Disabled")

2227

1520

return

2228

1521

2229

if client.approved or not client.approval_delay:

1522

if client._approved or not client.approval_delay:

2230

1523

#We are approved or approval is disabled

2231

1524

break

2232

elif client.approved is None:

1525

elif client._approved is None:

2233

1526

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

2234

1527

client.name)

2235

1528

if self.server.use_dbus:

2236

1529

# Emit D-Bus signal

2237

1530

client.NeedApproval(

2238

client.approval_delay.total_seconds()

2239

* 1000, client.approved_by_default)

1531

client.approval_delay_milliseconds(),

1532

client.approved_by_default)

2240

1533

else:

2241

1534

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

2242

1535

client.name)

2248

1541

#wait until timeout or approved

2249

1542

time = datetime.datetime.now()

2250

1543

client.changedstate.acquire()

2251

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

1544

(client.changedstate.wait

1545

(float(client._timedelta_to_milliseconds(delay)

1546

/ 1000)))

2252

1547

client.changedstate.release()

2253

1548

time2 = datetime.datetime.now()

2254

1549

if (time2 - time) >= delay:

2265

1560

else:

2266

1561

delay -= time2 - time

2267

1562

2268

try:

2269

session.send(client.secret)

2270

except gnutls.Error as error:

2271

logger.warning("gnutls send failed",

2272

exc_info = error)

2273

return

1563

sent_size = 0

1564

while sent_size < len(client.secret):

1565

try:

1566

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

1567

except gnutls.errors.GNUTLSError as error:

1568

logger.warning("gnutls send failed")

1569

return

1570

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

1571

sent, len(client.secret)

1572

- (sent_size + sent))

1573

sent_size += sent

2274

1574

2275

1575

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

2276

1576

# bump the timeout using extended_timeout

2277

client.bump_timeout(client.extended_timeout)

1577

client.checked_ok(client.extended_timeout)

2278

1578

if self.server.use_dbus:

2279

1579

# Emit D-Bus signal

2280

1580

client.GotSecret()

2284

1584

client.approvals_pending -= 1

2285

1585

try:

2286

1586

session.bye()

2287

except gnutls.Error as error:

2288

logger.warning("GnuTLS bye failed",

2289

exc_info=error)

1587

except gnutls.errors.GNUTLSError as error:

1588

logger.warning("GnuTLS bye failed")

2290

1589

2291

1590

@staticmethod

2292

1591

def peer_certificate(session):

2293

1592

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

2294

1593

# If not an OpenPGP certificate...

2295

if (gnutls.certificate_type_get(session._c_object)

2296

!= gnutls.CRT_OPENPGP):

2297

# ...return invalid data

2298

return b""

1594

if (gnutls.library.functions

1595

.gnutls_certificate_type_get(session._c_object)

1596

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1597

# ...do the normal thing

1598

return session.peer_certificate

2299

1599

list_size = ctypes.c_uint(1)

2300

cert_list = (gnutls.certificate_get_peers

1600

cert_list = (gnutls.library.functions

1601

.gnutls_certificate_get_peers

2301

1602

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

2302

1603

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

2303

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

1604

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

1605

" certificate")

2304

1606

if list_size.value == 0:

2305

1607

return None

2306

1608

cert = cert_list[0]

2310

1612

def fingerprint(openpgp):

2311

1613

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

2312

1614

# New GnuTLS "datum" with the OpenPGP public key

2313

datum = gnutls.datum_t(

2314

ctypes.cast(ctypes.c_char_p(openpgp),

2315

ctypes.POINTER(ctypes.c_ubyte)),

2316

ctypes.c_uint(len(openpgp)))

1615

datum = (gnutls.library.types

1616

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

1617

ctypes.POINTER

1618

(ctypes.c_ubyte)),

1619

ctypes.c_uint(len(openpgp))))

2317

1620

# New empty GnuTLS certificate

2318

crt = gnutls.openpgp_crt_t()

2319

gnutls.openpgp_crt_init(ctypes.byref(crt))

1621

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1622

(gnutls.library.functions

1623

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

2320

1624

# Import the OpenPGP public key into the certificate

2321

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

2322

gnutls.OPENPGP_FMT_RAW)

1625

(gnutls.library.functions

1626

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

1627

gnutls.library.constants

1628

.GNUTLS_OPENPGP_FMT_RAW))

2323

1629

# Verify the self signature in the key

2324

1630

crtverify = ctypes.c_uint()

2325

gnutls.openpgp_crt_verify_self(crt, 0,

2326

ctypes.byref(crtverify))

1631

(gnutls.library.functions

1632

.gnutls_openpgp_crt_verify_self(crt, 0,

1633

ctypes.byref(crtverify)))

2327

1634

if crtverify.value != 0:

2328

gnutls.openpgp_crt_deinit(crt)

2329

raise gnutls.CertificateSecurityError("Verify failed")

1635

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1636

raise (gnutls.errors.CertificateSecurityError

1637

("Verify failed"))

2330

1638

# New buffer for the fingerprint

2331

1639

buf = ctypes.create_string_buffer(20)

2332

1640

buf_len = ctypes.c_size_t()

2333

1641

# Get the fingerprint from the certificate into the buffer

2334

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

2335

ctypes.byref(buf_len))

1642

(gnutls.library.functions

1643

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

1644

ctypes.byref(buf_len)))

2336

1645

# Deinit the certificate

2337

gnutls.openpgp_crt_deinit(crt)

1646

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

2338

1647

# Convert the buffer to a Python bytestring

2339

1648

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

2340

1649

# Convert the bytestring to hexadecimal notation

2344

1653

2345

1654

class MultiprocessingMixIn(object):

2346

1655

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

2347

2348

1656

def sub_process_main(self, request, address):

2349

1657

try:

2350

1658

self.finish_request(request, address)

2351

except Exception:

1659

except:

2352

1660

self.handle_error(request, address)

2353

1661

self.close_request(request)

2354

1662

2355

1663

def process_request(self, request, address):

2356

1664

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

2357

1665

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

2358

args = (request, address))

1666

args = (request,

1667

address))

2359

1668

proc.start()

2360

1669

return proc

2361

1670

2362

1671

2363

1672

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

2364

1673

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

2365

2366

1674

def process_request(self, request, client_address):

2367

1675

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

2368

1676

2377

1685

2378

1686

def add_pipe(self, parent_pipe, proc):

2379

1687

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

2380

raise NotImplementedError()

1688

raise NotImplementedError

2381

1689

2382

1690

2383

1691

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

2389

1697

interface: None or a network interface name (string)

2390

1698

use_ipv6: Boolean; to use IPv6 or not

2391

1699

"""

2392

2393

1700

def __init__(self, server_address, RequestHandlerClass,

2394

interface=None,

2395

use_ipv6=True,

2396

socketfd=None):

2397

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

2398

creating a new one with socket.socket().

2399

"""

1701

interface=None, use_ipv6=True):

2400

1702

self.interface = interface

2401

1703

if use_ipv6:

2402

1704

self.address_family = socket.AF_INET6

2403

if socketfd is not None:

2404

# Save the file descriptor

2405

self.socketfd = socketfd

2406

# Save the original socket.socket() function

2407

self.socket_socket = socket.socket

2408

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

2409

#

2410

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

2411

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

2412

# patching socket.socket.)

2413

#

2414

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

2415

@functools.wraps(socket.socket)

2416

def socket_wrapper(*args, **kwargs):

2417

# Restore original function so subsequent calls are

2418

# not affected.

2419

socket.socket = self.socket_socket

2420

del self.socket_socket

2421

# This time only, return a new socket object from the

2422

# saved file descriptor.

2423

return socket.fromfd(self.socketfd, *args, **kwargs)

2424

# Replace socket.socket() function with wrapper

2425

socket.socket = socket_wrapper

2426

# The socketserver.TCPServer.__init__ will call

2427

# socket.socket(), which might be our replacement,

2428

# socket_wrapper(), if socketfd was set.

2429

1705

socketserver.TCPServer.__init__(self, server_address,

2430

1706

RequestHandlerClass)

2431

2432

1707

def server_bind(self):

2433

1708

"""This overrides the normal server_bind() function

2434

1709

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

2440

1715

self.interface)

2441

1716

else:

2442

1717

try:

2443

self.socket.setsockopt(

2444

socket.SOL_SOCKET, SO_BINDTODEVICE,

2445

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

1718

self.socket.setsockopt(socket.SOL_SOCKET,

1719

SO_BINDTODEVICE,

1720

str(self.interface

1721

+ '\0'))

2446

1722

except socket.error as error:

2447

if error.errno == errno.EPERM:

2448

logger.error("No permission to bind to"

2449

" interface %s", self.interface)

2450

elif error.errno == errno.ENOPROTOOPT:

1723

if error[0] == errno.EPERM:

1724

logger.error("No permission to"

1725

" bind to interface %s",

1726

self.interface)

1727

elif error[0] == errno.ENOPROTOOPT:

2451

1728

logger.error("SO_BINDTODEVICE not available;"

2452

1729

" cannot bind to interface %s",

2453

1730

self.interface)

2454

elif error.errno == errno.ENODEV:

2455

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

2456

" cannot bind", self.interface)

2457

1731

else:

2458

1732

raise

2459

1733

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

2462

1736

if self.address_family == socket.AF_INET6:

2463

1737

any_address = "::" # in6addr_any

2464

1738

else:

2465

any_address = "0.0.0.0" # INADDR_ANY

1739

any_address = socket.INADDR_ANY

2466

1740

self.server_address = (any_address,

2467

1741

self.server_address[1])

2468

1742

elif not self.server_address[1]:

2469

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

1743

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

1744

0)

2470

1745

# if self.interface:

2471

1746

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

2472

1747

# 0, # port

2484

1759

gnutls_priority GnuTLS priority string

2485

1760

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

2486

1761

2487

Assumes a GLib.MainLoop event loop.

1762

Assumes a gobject.MainLoop event loop.

2488

1763

"""

2489

2490

1764

def __init__(self, server_address, RequestHandlerClass,

2491

interface=None,

2492

use_ipv6=True,

2493

clients=None,

2494

gnutls_priority=None,

2495

use_dbus=True,

2496

socketfd=None):

1765

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

1766

gnutls_priority=None, use_dbus=True):

2497

1767

self.enabled = False

2498

1768

self.clients = clients

2499

1769

if self.clients is None:

2503

1773

IPv6_TCPServer.__init__(self, server_address,

2504

1774

RequestHandlerClass,

2505

1775

interface = interface,

2506

use_ipv6 = use_ipv6,

2507

socketfd = socketfd)

2508

1776

use_ipv6 = use_ipv6)

2509

1777

def server_activate(self):

2510

1778

if self.enabled:

2511

1779

return socketserver.TCPServer.server_activate(self)

2515

1783

2516

1784

def add_pipe(self, parent_pipe, proc):

2517

1785

# Call "handle_ipc" for both data and EOF events

2518

GLib.io_add_watch(

2519

parent_pipe.fileno(),

2520

GLib.IO_IN | GLib.IO_HUP,

2521

functools.partial(self.handle_ipc,

2522

parent_pipe = parent_pipe,

2523

proc = proc))

1786

gobject.io_add_watch(parent_pipe.fileno(),

1787

gobject.IO_IN | gobject.IO_HUP,

1788

functools.partial(self.handle_ipc,

1789

parent_pipe =

1790

parent_pipe,

1791

proc = proc))

2524

1792

2525

def handle_ipc(self, source, condition,

2526

parent_pipe=None,

2527

proc = None,

2528

client_object=None):

1793

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

1794

proc = None, client_object=None):

1795

condition_names = {

1796

gobject.IO_IN: "IN", # There is data to read.

1797

gobject.IO_OUT: "OUT", # Data can be written (without

1798

# blocking).

1799

gobject.IO_PRI: "PRI", # There is urgent data to read.

1800

gobject.IO_ERR: "ERR", # Error condition.

1801

gobject.IO_HUP: "HUP" # Hung up (the connection has been

1802

# broken, usually for pipes and

1803

# sockets).

1804

}

1805

conditions_string = ' | '.join(name

1806

for cond, name in

1807

condition_names.iteritems()

1808

if cond & condition)

2529

1809

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

2530

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

1810

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

2531

1811

# Wait for other process to exit

2532

1812

proc.join()

2533

1813

return False

2540

1820

fpr = request[1]

2541

1821

address = request[2]

2542

1822

2543

for c in self.clients.values():

1823

for c in self.clients.itervalues():

2544

1824

if c.fingerprint == fpr:

2545

1825

client = c

2546

1826

break

2554

1834

parent_pipe.send(False)

2555

1835

return False

2556

1836

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

client_object = client))

1837

gobject.io_add_watch(parent_pipe.fileno(),

1838

gobject.IO_IN | gobject.IO_HUP,

1839

functools.partial(self.handle_ipc,

1840

parent_pipe =

1841

parent_pipe,

1842

proc = proc,

1843

client_object =

1844

client))

2564

1845

parent_pipe.send(True)

2565

1846

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

2566

1847

# same fileno

2572

1853

2573

1854

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

2574

1855

funcname)(*args,

2575

**kwargs)))

1856

**kwargs)))

2576

1857

2577

1858

if command == 'getattr':

2578

1859

attrname = request[1]

2579

if isinstance(client_object.__getattribute__(attrname),

2580

collections.Callable):

2581

parent_pipe.send(('function', ))

1860

if callable(client_object.__getattribute__(attrname)):

1861

parent_pipe.send(('function',))

2582

1862

else:

2583

parent_pipe.send((

2584

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

1863

parent_pipe.send(('data', client_object

1864

.__getattribute__(attrname)))

2585

1865

2586

1866

if command == 'setattr':

2587

1867

attrname = request[1]

2591

1871

return True

2592

1872

2593

1873

2594

def rfc3339_duration_to_delta(duration):

2595

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

2596

2597

>>> rfc3339_duration_to_delta("P7D")

2598

datetime.timedelta(7)

2599

>>> rfc3339_duration_to_delta("PT60S")

2600

datetime.timedelta(0, 60)

2601

>>> rfc3339_duration_to_delta("PT60M")

2602

datetime.timedelta(0, 3600)

2603

>>> rfc3339_duration_to_delta("PT24H")

2604

datetime.timedelta(1)

2605

>>> rfc3339_duration_to_delta("P1W")

2606

datetime.timedelta(7)

2607

>>> rfc3339_duration_to_delta("PT5M30S")

2608

datetime.timedelta(0, 330)

2609

>>> rfc3339_duration_to_delta("P1DT3M20S")

2610

datetime.timedelta(1, 200)

2611

"""

2612

2613

# Parsing an RFC 3339 duration with regular expressions is not

2614

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

2615

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

2616

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

2617

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

2618

# avoid excessive use of external libraries.

2619

2620

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

2621

Token = collections.namedtuple("Token", (

2622

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

2623

# a "group" containing digits

2624

"value", # datetime.timedelta or None

2625

"followers")) # Tokens valid after this token

2626

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

2627

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

2628

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

2629

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

2630

datetime.timedelta(seconds=1),

2631

frozenset((token_end, )))

2632

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

2633

datetime.timedelta(minutes=1),

2634

frozenset((token_second, token_end)))

2635

token_hour = Token(re.compile(r"(\d+)H"),

2636

datetime.timedelta(hours=1),

2637

frozenset((token_minute, token_end)))

2638

token_time = Token(re.compile(r"T"),

2639

None,

2640

frozenset((token_hour, token_minute,

2641

token_second)))

2642

token_day = Token(re.compile(r"(\d+)D"),

2643

datetime.timedelta(days=1),

2644

frozenset((token_time, token_end)))

2645

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

2646

datetime.timedelta(weeks=4),

2647

frozenset((token_day, token_end)))

2648

token_year = Token(re.compile(r"(\d+)Y"),

2649

datetime.timedelta(weeks=52),

2650

frozenset((token_month, token_end)))

2651

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

2652

datetime.timedelta(weeks=1),

2653

frozenset((token_end, )))

2654

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

2655

frozenset((token_year, token_month,

2656

token_day, token_time,

2657

token_week)))

2658

# Define starting values

2659

value = datetime.timedelta() # Value so far

2660

found_token = None

2661

followers = frozenset((token_duration, )) # Following valid tokens

2662

s = duration # String left to parse

2663

# Loop until end token is found

2664

while found_token is not token_end:

2665

# Search for any currently valid tokens

2666

for token in followers:

2667

match = token.regexp.match(s)

2668

if match is not None:

2669

# Token found

2670

if token.value is not None:

2671

# Value found, parse digits

2672

factor = int(match.group(1), 10)

2673

# Add to value so far

2674

value += factor * token.value

2675

# Strip token from string

2676

s = token.regexp.sub("", s, 1)

2677

# Go to found token

2678

found_token = token

2679

# Set valid next tokens

2680

followers = found_token.followers

2681

break

2682

else:

2683

# No currently valid tokens were found

2684

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

2685

.format(duration))

2686

# End token found

2687

return value

2688

2689

2690

1874

def string_to_delta(interval):

2691

1875

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

2692

1876

2703

1887

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

2704

1888

datetime.timedelta(0, 330)

2705

1889

"""

2706

2707

try:

2708

return rfc3339_duration_to_delta(interval)

2709

except ValueError:

2710

pass

2711

2712

1890

timevalue = datetime.timedelta(0)

2713

1891

for s in interval.split():

2714

1892

try:

2715

suffix = s[-1]

1893

suffix = unicode(s[-1])

2716

1894

value = int(s[:-1])

2717

1895

if suffix == "d":

2718

1896

delta = datetime.timedelta(value)

2725

1903

elif suffix == "w":

2726

1904

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

2727

1905

else:

2728

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

2729

except IndexError as e:

1906

raise ValueError("Unknown suffix %r" % suffix)

1907

except (ValueError, IndexError) as e:

2730

1908

raise ValueError(*(e.args))

2731

1909

timevalue += delta

2732

1910

return timevalue

2745

1923

sys.exit()

2746

1924

if not noclose:

2747

1925

# Close all standard open file descriptors

2748

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

1926

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

2749

1927

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

2750

1928

raise OSError(errno.ENODEV,

2751

"{} not a character device"

2752

.format(os.devnull))

1929

"%s not a character device"

1930

% os.path.devnull)

2753

1931

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

2754

1932

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

2755

1933

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

2764

1942

2765

1943

parser = argparse.ArgumentParser()

2766

1944

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

2767

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

1945

version = "%%(prog)s %s" % version,

2768

1946

help="show version number and exit")

2769

1947

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

2770

1948

help="Bind to interface IF")

2776

1954

help="Run self-test")

2777

1955

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

2778

1956

help="Debug mode; run in foreground and log"

2779

" to terminal", default=None)

1957

" to terminal")

2780

1958

parser.add_argument("--debuglevel", metavar="LEVEL",

2781

1959

help="Debug level for stdout output")

2782

1960

parser.add_argument("--priority", help="GnuTLS"

2789

1967

" files")

2790

1968

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

2791

1969

dest="use_dbus", help="Do not provide D-Bus"

2792

" system bus interface", default=None)

1970

" system bus interface")

2793

1971

parser.add_argument("--no-ipv6", action="store_false",

2794

dest="use_ipv6", help="Do not use IPv6",

2795

default=None)

1972

dest="use_ipv6", help="Do not use IPv6")

2796

1973

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

2797

1974

dest="restore", help="Do not restore stored"

2798

" state", default=None)

2799

parser.add_argument("--socket", type=int,

2800

help="Specify a file descriptor to a network"

2801

" socket to use instead of creating one")

2802

parser.add_argument("--statedir", metavar="DIR",

2803

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

2804

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

2805

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

2806

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

2807

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

2808

default=None)

1975

" state", default=True)

2809

1976

2810

1977

options = parser.parse_args()

2811

1978

2812

1979

if options.check:

2813

1980

import doctest

2814

fail_count, test_count = doctest.testmod()

2815

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

1981

doctest.testmod()

1982

sys.exit()

2816

1983

2817

1984

# Default values for config file for server-global settings

2818

1985

server_defaults = { "interface": "",

2820

1987

"port": "",

2821

1988

"debug": "False",

2822

1989

"priority":

2823

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

2824

":+SIGN-DSA-SHA256",

1990

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

2825

1991

"servicename": "Mandos",

2826

1992

"use_dbus": "True",

2827

1993

"use_ipv6": "True",

2828

1994

"debuglevel": "",

2829

"restore": "True",

2830

"socket": "",

2831

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

2832

"foreground": "False",

2833

"zeroconf": "True",

2834

}

1995

}

2835

1996

2836

1997

# Parse config file for server-global settings

2837

1998

server_config = configparser.SafeConfigParser(server_defaults)

2838

1999

del server_defaults

2839

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

2000

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

2001

"mandos.conf"))

2840

2002

# Convert the SafeConfigParser object to a dict

2841

2003

server_settings = server_config.defaults()

2842

2004

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

2843

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

2005

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

2844

2006

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

2845

2007

option)

2846

2008

if server_settings["port"]:

2847

2009

server_settings["port"] = server_config.getint("DEFAULT",

2848

2010

"port")

2849

if server_settings["socket"]:

2850

server_settings["socket"] = server_config.getint("DEFAULT",

2851

"socket")

2852

# Later, stdin will, and stdout and stderr might, be dup'ed

2853

# over with an opened os.devnull. But we don't want this to

2854

# happen with a supplied network socket.

2855

if 0 <= server_settings["socket"] <= 2:

2856

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

2857

["socket"])

2858

2011

del server_config

2859

2012

2860

2013

# Override the settings from the config file with command line

2861

2014

# options, if set.

2862

2015

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

2863

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

2864

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

2865

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

2016

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

2017

"use_dbus", "use_ipv6", "debuglevel", "restore"):

2866

2018

value = getattr(options, option)

2867

2019

if value is not None:

2868

2020

server_settings[option] = value

2869

2021

del options

2870

2022

# Force all strings to be unicode

2871

2023

for option in server_settings.keys():

2872

if isinstance(server_settings[option], bytes):

2873

server_settings[option] = (server_settings[option]

2874

.decode("utf-8"))

2875

# Force all boolean options to be boolean

2876

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

2877

"foreground", "zeroconf"):

2878

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

2879

# Debug implies foreground

2880

if server_settings["debug"]:

2881

server_settings["foreground"] = True

2024

if type(server_settings[option]) is str:

2025

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

2882

2026

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

2883

2027

2884

2028

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

2885

2029

2886

if (not server_settings["zeroconf"]

2887

and not (server_settings["port"]

2888

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

2889

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

2890

2891

2030

# For convenience

2892

2031

debug = server_settings["debug"]

2893

2032

debuglevel = server_settings["debuglevel"]

2894

2033

use_dbus = server_settings["use_dbus"]

2895

2034

use_ipv6 = server_settings["use_ipv6"]

2896

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

2897

stored_state_file)

2898

foreground = server_settings["foreground"]

2899

zeroconf = server_settings["zeroconf"]

2900

2035

2901

2036

if debug:

2902

initlogger(debug, logging.DEBUG)

2037

initlogger(logging.DEBUG)

2903

2038

else:

2904

2039

if not debuglevel:

2905

initlogger(debug)

2040

initlogger()

2906

2041

else:

2907

2042

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

2908

initlogger(debug, level)

2043

initlogger(level)

2909

2044

2910

2045

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

2911

syslogger.setFormatter(

2912

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

2913

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

2914

server_settings["servicename"])))

2046

syslogger.setFormatter(logging.Formatter

2047

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

2048

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

2049

% server_settings["servicename"]))

2915

2050

2916

2051

# Parse config file with clients

2917

client_config = configparser.SafeConfigParser(Client

2918

.client_defaults)

2052

client_defaults = { "timeout": "5m",

2053

"extended_timeout": "15m",

2054

"interval": "2m",

2055

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

2056

"host": "",

2057

"approval_delay": "0s",

2058

"approval_duration": "1s",

2059

}

2060

client_config = configparser.SafeConfigParser(client_defaults)

2919

2061

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

2920

2062

"clients.conf"))

2921

2063

2922

2064

global mandos_dbus_service

2923

2065

mandos_dbus_service = None

2924

2066

2925

socketfd = None

2926

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

2927

socketfd = server_settings["socket"]

2928

tcp_server = MandosServer(

2929

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

2930

ClientHandler,

2931

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

2932

use_ipv6=use_ipv6,

2933

gnutls_priority=server_settings["priority"],

2934

use_dbus=use_dbus,

2935

socketfd=socketfd)

2936

if not foreground:

2937

pidfilename = "/run/mandos.pid"

2938

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

2939

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

2940

pidfile = None

2067

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

2068

server_settings["port"]),

2069

ClientHandler,

2070

interface=(server_settings["interface"]

2071

or None),

2072

use_ipv6=use_ipv6,

2073

gnutls_priority=

2074

server_settings["priority"],

2075

use_dbus=use_dbus)

2076

if not debug:

2077

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

2941

2078

try:

2942

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

2943

except IOError as e:

2944

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

2945

exc_info=e)

2079

pidfile = open(pidfilename, "w")

2080

except IOError:

2081

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

2946

2082

2947

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

2948

("mandos", "mandos"),

2949

("nobody", "nogroup")):

2083

try:

2084

uid = pwd.getpwnam("_mandos").pw_uid

2085

gid = pwd.getpwnam("_mandos").pw_gid

2086

except KeyError:

2950

2087

try:

2951

uid = pwd.getpwnam(name).pw_uid

2952

gid = pwd.getpwnam(group).pw_gid

2953

break

2088

uid = pwd.getpwnam("mandos").pw_uid

2089

gid = pwd.getpwnam("mandos").pw_gid

2954

2090

except KeyError:

2955

continue

2956

else:

2957

uid = 65534

2958

gid = 65534

2091

try:

2092

uid = pwd.getpwnam("nobody").pw_uid

2093

gid = pwd.getpwnam("nobody").pw_gid

2094

except KeyError:

2095

uid = 65534

2096

gid = 65534

2959

2097

try:

2960

2098

os.setgid(gid)

2961

2099

os.setuid(uid)

2962

if debug:

2963

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

2964

gid))

2965

2100

except OSError as error:

2966

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

2967

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

2968

if error.errno != errno.EPERM:

2969

raise

2101

if error[0] != errno.EPERM:

2102

raise error

2970

2103

2971

2104

if debug:

2972

2105

# Enable all possible GnuTLS debugging

2973

2106

2974

2107

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

2975

2108

# - GnuTLS manual

2976

gnutls.global_set_log_level(11)

2109

gnutls.library.functions.gnutls_global_set_log_level(11)

2977

2110

2978

@gnutls.log_func

2111

@gnutls.library.types.gnutls_log_func

2979

2112

def debug_gnutls(level, string):

2980

2113

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

2981

2114

2982

gnutls.global_set_log_function(debug_gnutls)

2115

(gnutls.library.functions

2116

.gnutls_global_set_log_function(debug_gnutls))

2983

2117

2984

2118

# Redirect stdin so all checkers get /dev/null

2985

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

2119

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

2986

2120

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

2987

2121

if null > 2:

2988

2122

os.close(null)

2123

else:

2124

# No console logging

2125

logger.removeHandler(console)

2989

2126

2990

2127

# Need to fork before connecting to D-Bus

2991

if not foreground:

2128

if not debug:

2992

2129

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

2993

2130

daemon()

2994

2131

2995

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

2996

# to inform GLib that threads will be used.

2997

GLib.threads_init()

2998

2999

2132

global main_loop

3000

2133

# From the Avahi example code

3001

DBusGMainLoop(set_as_default=True)

3002

main_loop = GLib.MainLoop()

2134

DBusGMainLoop(set_as_default=True )

2135

main_loop = gobject.MainLoop()

3003

2136

bus = dbus.SystemBus()

3004

2137

# End of Avahi example code

3005

2138

if use_dbus:

3006

2139

try:

3007

2140

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

3008

bus,

3009

do_not_queue=True)

3010

old_bus_name = dbus.service.BusName(

3011

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

3012

do_not_queue=True)

3013

except dbus.exceptions.DBusException as e:

3014

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

2141

bus, do_not_queue=True)

2142

old_bus_name = (dbus.service.BusName

2143

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

2144

do_not_queue=True))

2145

except dbus.exceptions.NameExistsException as e:

2146

logger.error(unicode(e) + ", disabling D-Bus")

3015

2147

use_dbus = False

3016

2148

server_settings["use_dbus"] = False

3017

2149

tcp_server.use_dbus = False

3018

if zeroconf:

3019

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

3020

service = AvahiServiceToSyslog(

3021

name = server_settings["servicename"],

3022

servicetype = "_mandos._tcp",

3023

protocol = protocol,

3024

bus = bus)

3025

if server_settings["interface"]:

3026

service.interface = if_nametoindex(

3027

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

2150

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2151

service = AvahiServiceToSyslog(name =

2152

server_settings["servicename"],

2153

servicetype = "_mandos._tcp",

2154

protocol = protocol, bus = bus)

2155

if server_settings["interface"]:

2156

service.interface = (if_nametoindex

2157

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

3028

2158

3029

2159

global multiprocessing_manager

3030

2160

multiprocessing_manager = multiprocessing.Manager()

3031

2161

3032

2162

client_class = Client

3033

2163

if use_dbus:

3034

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

3035

3036

client_settings = Client.config_parser(client_config)

2164

client_class = functools.partial(ClientDBusTransitional,

2165

bus = bus)

2166

2167

special_settings = {

2168

# Some settings need to be accessd by special methods;

2169

# booleans need .getboolean(), etc. Here is a list of them:

2170

"approved_by_default":

2171

lambda section:

2172

client_config.getboolean(section, "approved_by_default"),

2173

}

2174

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

2175

# { client_name: {setting_name: value, ...}, ...}

2176

# with exceptions for any special settings as defined above

2177

client_settings = dict((clientname,

2178

dict((setting,

2179

(value

2180

if setting not in special_settings

2181

else special_settings[setting]

2182

(clientname)))

2183

for setting, value in

2184

client_config.items(clientname)))

2185

for clientname in client_config.sections())

2186

3037

2187

old_client_settings = {}

3038

clients_data = {}

3039

3040

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

3041

global wnull

3042

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

3043

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

3044

# mode

3045

if debug or not foreground:

3046

wnull.close()

2188

clients_data = []

3047

2189

3048

2190

# Get client data and settings from last running state.

3049

2191

if server_settings["restore"]:

3050

2192

try:

3051

2193

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

3052

if sys.version_info.major == 2:

3053

clients_data, old_client_settings = pickle.load(

3054

stored_state)

3055

else:

3056

bytes_clients_data, bytes_old_client_settings = (

3057

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

3058

### Fix bytes to strings

3059

## clients_data

3060

# .keys()

3061

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

3062

if isinstance(key, bytes)

3063

else key): value

3064

for key, value in

3065

bytes_clients_data.items() }

3066

del bytes_clients_data

3067

for key in clients_data:

3068

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

3069

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

3070

for k, v in

3071

clients_data[key].items() }

3072

clients_data[key] = value

3073

# .client_structure

3074

value["client_structure"] = [

3075

(s.decode("utf-8")

3076

if isinstance(s, bytes)

3077

else s) for s in

3078

value["client_structure"] ]

3079

# .name & .host

3080

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

3081

if isinstance(value[k], bytes):

3082

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

3083

## old_client_settings

3084

# .keys()

3085

old_client_settings = {

3086

(key.decode("utf-8")

3087

if isinstance(key, bytes)

3088

else key): value

3089

for key, value in

3090

bytes_old_client_settings.items() }

3091

del bytes_old_client_settings

3092

# .host

3093

for value in old_client_settings.values():

3094

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

3095

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

3096

.decode("utf-8"))

2194

clients_data, old_client_settings = (pickle.load

2195

(stored_state))

3097

2196

os.remove(stored_state_path)

3098

2197

except IOError as e:

3099

if e.errno == errno.ENOENT:

3100

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

3101

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

3102

else:

3103

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

3104

exc_info=e)

2198

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

2199

.format(e))

2200

if e.errno != errno.ENOENT:

3105

2201

raise

3106

except EOFError as e:

3107

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

3108

"EOFError:",

3109

exc_info=e)

3110

2202

3111

with PGPEngine() as pgp:

3112

for client_name, client in clients_data.items():

3113

# Skip removed clients

3114

if client_name not in client_settings:

3115

continue

2203

with Crypto() as crypt:

2204

for client in clients_data:

2205

client_name = client["name"]

3116

2206

3117

2207

# Decide which value to use after restoring saved state.

3118

2208

# We have three different values: Old config file,

3124

2214

# For each value in new config, check if it

3125

2215

# differs from the old config value (Except for

3126

2216

# the "secret" attribute)

3127

if (name != "secret"

3128

and (value !=

3129

old_client_settings[client_name][name])):

3130

client[name] = value

2217

if (name != "secret" and

2218

value != old_client_settings[client_name]

2219

[name]):

2220

setattr(client, name, value)

3131

2221

except KeyError:

3132

2222

pass

3133

2223

3134

2224

# Clients who has passed its expire date can still be

3135

# enabled if its last checker was successful. A Client

3136

# whose checker succeeded before we stored its state is

3137

# assumed to have successfully run all checkers during

3138

# downtime.

3139

if client["enabled"]:

3140

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

3141

if not client["last_checked_ok"]:

3142

logger.warning(

3143

"disabling client {} - Client never "

3144

"performed a successful checker".format(

3145

client_name))

3146

client["enabled"] = False

3147

elif client["last_checker_status"] != 0:

3148

logger.warning(

3149

"disabling client {} - Client last"

3150

" checker failed with error code"

3151

" {}".format(

3152

client_name,

3153

client["last_checker_status"]))

2225

# enabled if its last checker was sucessful. Clients

2226

# whose checker failed before we stored its state is

2227

# assumed to have failed all checkers during downtime.

2228

if client["enabled"] and client["last_checked_ok"]:

2229

if ((datetime.datetime.utcnow()

2230

- client["last_checked_ok"])

2231

> client["interval"]):

2232

if client["last_checker_status"] != 0:

3154

2233

client["enabled"] = False

3155

2234

else:

3156

client["expires"] = (

3157

datetime.datetime.utcnow()

3158

+ client["timeout"])

3159

logger.debug("Last checker succeeded,"

3160

" keeping {} enabled".format(

3161

client_name))

2235

client["expires"] = (datetime.datetime

2236

.utcnow()

2237

+ client["timeout"])

2238

2239

client["changedstate"] = (multiprocessing_manager

2240

.Condition

2241

(multiprocessing_manager

2242

.Lock()))

2243

if use_dbus:

2244

new_client = (ClientDBusTransitional.__new__

2245

(ClientDBusTransitional))

2246

tcp_server.clients[client_name] = new_client

2247

new_client.bus = bus

2248

for name, value in client.iteritems():

2249

setattr(new_client, name, value)

2250

client_object_name = unicode(client_name).translate(

2251

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

2252

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

2253

new_client.dbus_object_path = (dbus.ObjectPath

2254

("/clients/"

2255

+ client_object_name))

2256

DBusObjectWithProperties.__init__(new_client,

2257

new_client.bus,

2258

new_client

2259

.dbus_object_path)

2260

else:

2261

tcp_server.clients[client_name] = (Client.__new__

2262

(Client))

2263

for name, value in client.iteritems():

2264

setattr(tcp_server.clients[client_name],

2265

name, value)

2266

3162

2267

try:

3163

client["secret"] = pgp.decrypt(

3164

client["encrypted_secret"],

2268

tcp_server.clients[client_name].secret = (

2269

crypt.decrypt(tcp_server.clients[client_name]

2270

.encrypted_secret,

2271

client_settings[client_name]

2272

["secret"]))

2273

except CryptoError:

2274

# If decryption fails, we use secret from new settings

2275

tcp_server.clients[client_name].secret = (

3165

2276

client_settings[client_name]["secret"])

3166

except PGPError:

3167

# If decryption fails, we use secret from new settings

3168

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

3169

client_name))

3170

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

3171

["secret"])

3172

3173

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

3174

for client_name in (set(old_client_settings)

3175

- set(client_settings)):

3176

del clients_data[client_name]

3177

for client_name in (set(client_settings)

3178

- set(old_client_settings)):

3179

clients_data[client_name] = client_settings[client_name]

3180

3181

# Create all client objects

3182

for client_name, client in clients_data.items():

3183

tcp_server.clients[client_name] = client_class(

3184

name = client_name,

3185

settings = client,

3186

server_settings = server_settings)

2277

2278

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

2279

for clientname in set(old_client_settings) - set(client_settings):

2280

del tcp_server.clients[clientname]

2281

for clientname in set(client_settings) - set(old_client_settings):

2282

tcp_server.clients[clientname] = (client_class(name

2283

= clientname,

2284

config =

2285

client_settings

2286

[clientname]))

3187

2287

3188

2288

if not tcp_server.clients:

3189

2289

logger.warning("No clients defined")

3190

3191

if not foreground:

3192

if pidfile is not None:

3193

pid = os.getpid()

3194

try:

3195

with pidfile:

3196

print(pid, file=pidfile)

3197

except IOError:

3198

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

3199

pidfilename, pid)

3200

del pidfile

2290

2291

if not debug:

2292

try:

2293

with pidfile:

2294

pid = os.getpid()

2295

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

2296

del pidfile

2297

except IOError:

2298

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

2299

pidfilename, pid)

2300

except NameError:

2301

# "pidfile" was never created

2302

pass

3201

2303

del pidfilename

2304

2305

signal.signal(signal.SIGINT, signal.SIG_IGN)

3202

2306

3203

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

3204

GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,

3205

lambda: main_loop.quit() and False)

2307

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

2308

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

3206

2309

3207

2310

if use_dbus:

3208

3209

@alternate_dbus_interfaces(

3210

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

3211

class MandosDBusService(DBusObjectWithObjectManager):

2311

class MandosDBusService(dbus.service.Object):

3212

2312

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

3213

3214

2313

def __init__(self):

3215

2314

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

3216

3217

2315

_interface = "se.recompile.Mandos"

3218

2316

3219

2317

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

3226

2324

"D-Bus signal"

3227

2325

pass

3228

2326

3229

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

3230

"true"})

3231

2327

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

3232

2328

def ClientRemoved(self, objpath, name):

3233

2329

"D-Bus signal"

3234

2330

pass

3235

2331

3236

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

3237

"true"})

3238

2332

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

3239

2333

def GetAllClients(self):

3240

2334

"D-Bus method"

3241

return dbus.Array(c.dbus_object_path for c in

3242

tcp_server.clients.values())

2335

return dbus.Array(c.dbus_object_path

2336

for c in

2337

tcp_server.clients.itervalues())

3243

2338

3244

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

3245

"true"})

3246

2339

@dbus.service.method(_interface,

3247

2340

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

3248

2341

def GetAllClientsWithProperties(self):

3249

2342

"D-Bus method"

3250

2343

return dbus.Dictionary(

3251

{ c.dbus_object_path: c.GetAll(

3252

"se.recompile.Mandos.Client")

3253

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

2344

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

2345

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

3254

2346

signature="oa{sv}")

3255

2347

3256

2348

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

3257

2349

def RemoveClient(self, object_path):

3258

2350

"D-Bus method"

3259

for c in tcp_server.clients.values():

2351

for c in tcp_server.clients.itervalues():

3260

2352

if c.dbus_object_path == object_path:

3261

2353

del tcp_server.clients[c.name]

3262

2354

c.remove_from_connection()

3263

# Don't signal the disabling

2355

# Don't signal anything except ClientRemoved

3264

2356

c.disable(quiet=True)

3265

# Emit D-Bus signal for removal

3266

self.client_removed_signal(c)

2357

# Emit D-Bus signal

2358

self.ClientRemoved(object_path, c.name)

3267

2359

return

3268

2360

raise KeyError(object_path)

3269

2361

3270

2362

del _interface

3271

3272

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

3273

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

3274

def GetManagedObjects(self):

3275

"""D-Bus method"""

3276

return dbus.Dictionary(

3277

{ client.dbus_object_path:

3278

dbus.Dictionary(

3279

{ interface: client.GetAll(interface)

3280

for interface in

3281

client._get_all_interface_names()})

3282

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

3283

3284

def client_added_signal(self, client):

3285

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

3286

if use_dbus:

3287

# New standard signal

3288

self.InterfacesAdded(

3289

client.dbus_object_path,

3290

dbus.Dictionary(

3291

{ interface: client.GetAll(interface)

3292

for interface in

3293

client._get_all_interface_names()}))

3294

# Old signal

3295

self.ClientAdded(client.dbus_object_path)

3296

3297

def client_removed_signal(self, client):

3298

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

3299

if use_dbus:

3300

# New standard signal

3301

self.InterfacesRemoved(

3302

client.dbus_object_path,

3303

client._get_all_interface_names())

3304

# Old signal

3305

self.ClientRemoved(client.dbus_object_path,

3306

client.name)

3307

2363

3308

mandos_dbus_service = MandosDBusService()

2364

class MandosDBusServiceTransitional(MandosDBusService):

2365

__metaclass__ = AlternateDBusNamesMetaclass

2366

mandos_dbus_service = MandosDBusServiceTransitional()

3309

2367

3310

2368

def cleanup():

3311

2369

"Cleanup function; run on exit"

3312

if zeroconf:

3313

service.cleanup()

2370

service.cleanup()

3314

2371

3315

2372

multiprocessing.active_children()

3316

wnull.close()

3317

2373

if not (tcp_server.clients or client_settings):

3318

2374

return

3319

2375

3320

2376

# Store client before exiting. Secrets are encrypted with key

3321

2377

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

3322

2378

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

3323

clients = {}

3324

with PGPEngine() as pgp:

3325

for client in tcp_server.clients.values():

2379

clients = []

2380

with Crypto() as crypt:

2381

for client in tcp_server.clients.itervalues():

3326

2382

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

3327

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

3328

key)

2383

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

2384

key)

3329

2385

client_dict = {}

3330

2386

3331

# A list of attributes that can not be pickled

3332

# + secret.

3333

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

3334

"checker", "server_settings" }

3335

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

3336

.Object):

2387

# A list of attributes that will not be stored when

2388

# shutting down.

2389

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

2390

for name, typ in (inspect.getmembers

2391

(dbus.service.Object)):

3337

2392

exclude.add(name)

3338

2393

3339

2394

client_dict["encrypted_secret"] = (client

3342

2397

if attr not in exclude:

3343

2398

client_dict[attr] = getattr(client, attr)

3344

2399

3345

clients[client.name] = client_dict

2400

clients.append(client_dict)

3346

2401

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

3347

2402

3348

2403

try:

3349

with tempfile.NamedTemporaryFile(

3350

mode='wb',

3351

suffix=".pickle",

3352

prefix='clients-',

3353

dir=os.path.dirname(stored_state_path),

3354

delete=False) as stored_state:

3355

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

3356

protocol = 2)

3357

tempname = stored_state.name

3358

os.rename(tempname, stored_state_path)

2404

with os.fdopen(os.open(stored_state_path,

2405

os.O_CREAT|os.O_WRONLY|os.O_TRUNC,

2406

0600), "wb") as stored_state:

2407

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

3359

2408

except (IOError, OSError) as e:

3360

if not debug:

3361

try:

3362

os.remove(tempname)

3363

except NameError:

3364

pass

3365

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

3366

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

3367

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

3368

else:

3369

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

3370

exc_info=e)

2409

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

2410

.format(e))

2411

if e.errno not in (errno.ENOENT, errno.EACCES):

3371

2412

raise

3372

2413

3373

2414

# Delete all clients, and settings from config

3375

2416

name, client = tcp_server.clients.popitem()

3376

2417

if use_dbus:

3377

2418

client.remove_from_connection()

3378

# Don't signal the disabling

2419

# Don't signal anything except ClientRemoved

3379

2420

client.disable(quiet=True)

3380

# Emit D-Bus signal for removal

3381

2421

if use_dbus:

3382

mandos_dbus_service.client_removed_signal(client)

2422

# Emit D-Bus signal

2423

mandos_dbus_service.ClientRemoved(client

2424

.dbus_object_path,

2425

client.name)

3383

2426

client_settings.clear()

3384

2427

3385

2428

atexit.register(cleanup)

3386

2429

3387

for client in tcp_server.clients.values():

2430

for client in tcp_server.clients.itervalues():

3388

2431

if use_dbus:

3389

# Emit D-Bus signal for adding

3390

mandos_dbus_service.client_added_signal(client)

2432

# Emit D-Bus signal

2433

mandos_dbus_service.ClientAdded(client.dbus_object_path)

3391

2434

# Need to initiate checking of clients

3392

2435

if client.enabled:

3393

2436

client.init_checker()

3396

2439

tcp_server.server_activate()

3397

2440

3398

2441

# Find out what port we got

3399

if zeroconf:

3400

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

2442

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

3401

2443

if use_ipv6:

3402

2444

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

3403

" flowinfo %d, scope_id %d",

3404

*tcp_server.socket.getsockname())

2445

" flowinfo %d, scope_id %d"

2446

% tcp_server.socket.getsockname())

3405

2447

else: # IPv4

3406

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

3407

*tcp_server.socket.getsockname())

2448

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

2449

% tcp_server.socket.getsockname())

3408

2450

3409

2451

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

3410

2452

3411

2453

try:

3412

if zeroconf:

3413

# From the Avahi example code

3414

try:

3415

service.activate()

3416

except dbus.exceptions.DBusException as error:

3417

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

3418

cleanup()

3419

sys.exit(1)

3420

# End of Avahi example code

2454

# From the Avahi example code

2455

try:

2456

service.activate()

2457

except dbus.exceptions.DBusException as error:

2458

logger.critical("DBusException: %s", error)

2459

cleanup()

2460

sys.exit(1)

2461

# End of Avahi example code

3421

2462

3422

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

3423

lambda *args, **kwargs:

3424

(tcp_server.handle_request

3425

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

2463

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

2464

lambda *args, **kwargs:

2465

(tcp_server.handle_request

2466

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

3426

2467

3427

2468

logger.debug("Starting main loop")

3428

2469

main_loop.run()

3429

2470

except AvahiError as error:

3430

logger.critical("Avahi Error", exc_info=error)

2471

logger.critical("AvahiError: %s", error)

3431

2472

cleanup()

3432

2473

sys.exit(1)

3433

2474

except KeyboardInterrupt: