/mandos/release : revision 237.7.392

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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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import SocketServer as socketserver

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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 socket

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import argparse

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import datetime

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import errno

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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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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 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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import cPickle as pickle

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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 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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import gobject

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import avahi

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from gi.repository import GLib

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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 = "1.4.1"

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version = "1.7.7"

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stored_state_file = "clients.pickle"

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logger = logging.getLogger()

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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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syslogger = None

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try:

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if_nametoindex = (ctypes.cdll.LoadLibrary

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

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.if_nametoindex)

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if_nametoindex = ctypes.cdll.LoadLibrary(

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ctypes.util.find_library("c")).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(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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struct.pack(b"16s16x", interface))

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

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return interface_index

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def initlogger(level=logging.WARNING):

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def copy_function(func):

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

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if sys.version_info.major == 2:

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return types.FunctionType(func.func_code,

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func.func_globals,

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func.func_name,

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func.func_defaults,

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func.func_closure)

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else:

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return types.FunctionType(func.__code__,

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func.__globals__,

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func.__name__,

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func.__defaults__,

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func.__closure__)

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

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"""init logger and add loglevel"""

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global syslogger

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syslogger = (logging.handlers.SysLogHandler(

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facility = logging.handlers.SysLogHandler.LOG_DAEMON,

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address = "/dev/log"))

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syslogger.setFormatter(logging.Formatter

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

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' %(message)s'))

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logger.addHandler(syslogger)

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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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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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logger.setLevel(level)

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class CryptoError(Exception):

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class PGPError(Exception):

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

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pass

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class Crypto(object):

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class PGPEngine(object):

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

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def __init__(self):

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self.gnupg = GnuPGInterface.GnuPG()

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

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

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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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def encrypt(self, data, password):

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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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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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return ciphertext

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def decrypt(self, data, password):

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

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self.value = value

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

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**kwargs)

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

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

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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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"""

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

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

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

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protocol = avahi.PROTO_UNSPEC, bus = None):

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def __init__(self,

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interface = avahi.IF_UNSPEC,

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name = None,

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servicetype = None,

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port = None,

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TXT = None,

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domain = "",

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host = "",

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max_renames = 32768,

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protocol = avahi.PROTO_UNSPEC,

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bus = None):

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self.interface = interface

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self.name = name

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self.type = servicetype

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339

self.server = None

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self.bus = bus

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self.entry_group_state_changed_match = None

262

def rename(self):

342

343

def rename(self, remove=True):

263

344

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

264

345

if self.rename_count >= self.max_renames:

265

346

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

266

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" after %i retries, exiting.",

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self.rename_count)

268

349

raise AvahiServiceError("Too many renames")

269

self.name = unicode(self.server

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.GetAlternativeServiceName(self.name))

350

self.name = str(

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self.server.GetAlternativeServiceName(self.name))

352

self.rename_count += 1

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353

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

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354

self.name)

273

self.remove()

355

if remove:

356

self.remove()

274

357

try:

275

358

self.add()

276

359

except dbus.exceptions.DBusException as error:

277

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

278

self.cleanup()

279

os._exit(1)

280

self.rename_count += 1

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

281

369

def remove(self):

282

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

283

371

if self.entry_group_state_changed_match is not None:

285

373

self.entry_group_state_changed_match = None

286

374

if self.group is not None:

287

375

self.group.Reset()

376

288

377

def add(self):

289

378

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

290

379

self.remove()

307

396

dbus.UInt16(self.port),

308

397

avahi.string_array_to_txt_array(self.TXT))

309

398

self.group.Commit()

399

310

400

def entry_group_state_changed(self, state, error):

311

401

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

312

402

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

318

408

self.rename()

319

409

elif state == avahi.ENTRY_GROUP_FAILURE:

320

410

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

321

unicode(error))

322

raise AvahiGroupError("State changed: %s"

323

% unicode(error))

411

str(error))

412

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

413

324

414

def cleanup(self):

325

415

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

326

416

if self.group is not None:

331

421

pass

332

422

self.group = None

333

423

self.remove()

424

334

425

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

335

426

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

336

427

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

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" }

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

}

344

434

if state in bad_states:

345

435

if bad_states[state] is not None:

346

436

if error is None:

349

439

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

350

440

self.cleanup()

351

441

elif state == avahi.SERVER_RUNNING:

352

self.add()

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)

353

454

else:

354

455

if error is None:

355

456

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

356

457

else:

357

458

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

459

358

460

def activate(self):

359

461

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

360

462

if self.server is None:

364

466

follow_name_owner_changes=True),

365

467

avahi.DBUS_INTERFACE_SERVER)

366

468

self.server.connect_to_signal("StateChanged",

367

self.server_state_changed)

469

self.server_state_changed)

368

470

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

369

471

472

370

473

class AvahiServiceToSyslog(AvahiService):

371

def rename(self):

474

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

372

475

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

373

ret = AvahiService.rename(self)

374

syslogger.setFormatter(logging.Formatter

375

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

376

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

377

% self.name))

476

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

477

syslogger.setFormatter(logging.Formatter(

478

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

479

.format(self.name)))

378

480

return ret

379

481

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

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

386

747

class Client(object):

387

748

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

388

749

389

750

Attributes:

390

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

751

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

391

752

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

392

753

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

393

754

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

394

755

to see if the client lives.

395

756

'None' if no process is running.

396

checker_callback_tag: a gobject event source tag, or None

757

checker_callback_tag: a GLib event source tag, or None

397

758

checker_command: string; External command which is run to check

398

759

if client lives. %() expansions are done at

399

760

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

400

761

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

401

checker_initiator_tag: a gobject event source tag, or None

762

checker_initiator_tag: a GLib event source tag, or None

402

763

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

403

764

client_structure: Object describing what attributes a client has

404

765

and is used for storing the client at exit

405

766

current_checker_command: string; current running checker_command

406

disable_initiator_tag: a gobject event source tag, or None

767

disable_initiator_tag: a GLib event source tag, or None

407

768

enabled: bool()

408

769

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

409

770

uniquely identify the client

411

772

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

412

773

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

413

774

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

414

415

775

last_checker_status: integer between 0 and 255 reflecting exit

416

776

status of last checker. -1 reflects crashed

417

checker, or None.

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

418

780

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

419

781

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

420

782

D-Bus identifiers

421

783

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

422

784

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

423

785

until this client is disabled

424

extended_timeout: extra long timeout when password has been sent

786

extended_timeout: extra long timeout when secret has been sent

425

787

runtime_expansions: Allowed attributes for runtime expansion.

426

788

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

427

789

disabled, or None

790

server_settings: The server_settings dict from main()

428

791

"""

429

792

430

793

runtime_expansions = ("approval_delay", "approval_duration",

431

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

432

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

794

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

795

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

796

"last_approval_request", "last_checked_ok",

433

797

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

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."""

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):

454

863

self.name = name

455

if config is None:

456

config = {}

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

457

881

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(" ", ""))

463

882

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

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 = config.get("enabled", True)

477

self.last_approval_request = None

478

if self.enabled:

479

self.last_enabled = datetime.datetime.utcnow()

480

else:

481

self.last_enabled = None

482

self.last_checked_ok = None

483

self.last_checker_status = None

484

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

485

self.extended_timeout = string_to_delta(config

486

["extended_timeout"])

487

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

883

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

884

datetime.datetime.utcnow())

885

886

# attributes specific for this server instance

488

887

self.checker = None

489

888

self.checker_initiator_tag = None

490

889

self.disable_initiator_tag = None

491

if self.enabled:

492

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

493

else:

494

self.expires = None

495

890

self.checker_callback_tag = None

496

self.checker_command = config["checker"]

497

891

self.current_checker_command = None

498

self._approved = None

499

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

500

True)

892

self.approved = None

501

893

self.approvals_pending = 0

502

self.approval_delay = string_to_delta(

503

config["approval_delay"])

504

self.approval_duration = string_to_delta(

505

config["approval_duration"])

506

self.changedstate = (multiprocessing_manager

507

.Condition(multiprocessing_manager

508

.Lock()))

509

self.client_structure = [attr for attr in

510

self.__dict__.iterkeys()

894

self.changedstate = multiprocessing_manager.Condition(

895

multiprocessing_manager.Lock())

896

self.client_structure = [attr

897

for attr in self.__dict__.keys()

511

898

if not attr.startswith("_")]

512

899

self.client_structure.append("client_structure")

513

900

514

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

515

lambda obj:

516

isinstance(obj,

517

property)):

901

for name, t in inspect.getmembers(

902

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

518

903

if not name.startswith("_"):

519

904

self.client_structure.append(name)

520

905

528

913

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

529

914

# Already enabled

530

915

return

531

self.send_changedstate()

532

916

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

533

917

self.enabled = True

534

918

self.last_enabled = datetime.datetime.utcnow()

535

919

self.init_checker()

920

self.send_changedstate()

536

921

537

922

def disable(self, quiet=True):

538

923

"""Disable this client."""

539

924

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

540

925

return False

541

926

if not quiet:

542

self.send_changedstate()

543

if not quiet:

544

927

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

545

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

546

gobject.source_remove(self.disable_initiator_tag)

928

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

929

GLib.source_remove(self.disable_initiator_tag)

547

930

self.disable_initiator_tag = None

548

931

self.expires = None

549

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

550

gobject.source_remove(self.checker_initiator_tag)

932

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

933

GLib.source_remove(self.checker_initiator_tag)

551

934

self.checker_initiator_tag = None

552

935

self.stop_checker()

553

936

self.enabled = False

554

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

937

if not quiet:

938

self.send_changedstate()

939

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

555

940

return False

556

941

557

942

def __del__(self):

560

945

def init_checker(self):

561

946

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

562

947

# and every interval from then on.

563

self.checker_initiator_tag = (gobject.timeout_add

564

(self.interval_milliseconds(),

565

self.start_checker))

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)

566

953

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

567

self.disable_initiator_tag = (gobject.timeout_add

568

(self.timeout_milliseconds(),

569

self.disable))

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)

570

958

# Also start a new checker *right now*.

571

959

self.start_checker()

572

960

573

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

961

def checker_callback(self, source, condition, connection,

962

command):

574

963

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

575

964

self.checker_callback_tag = None

576

965

self.checker = None

577

if os.WIFEXITED(condition):

578

self.last_checker_status = os.WEXITSTATUS(condition)

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

579

973

if self.last_checker_status == 0:

580

974

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

581

975

vars(self))

582

976

self.checked_ok()

583

977

else:

584

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

585

vars(self))

978

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

586

979

else:

587

980

self.last_checker_status = -1

981

self.last_checker_signal = -returncode

588

982

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

589

983

vars(self))

590

591

def checked_ok(self, timeout=None):

592

"""Bump up the timeout for this client.

593

594

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

595

alive and well.

596

"""

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."""

597

995

if timeout is None:

598

996

timeout = self.timeout

599

self.last_checked_ok = datetime.datetime.utcnow()

600

997

if self.disable_initiator_tag is not None:

601

gobject.source_remove(self.disable_initiator_tag)

998

GLib.source_remove(self.disable_initiator_tag)

999

self.disable_initiator_tag = None

602

1000

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

603

self.disable_initiator_tag = (gobject.timeout_add

604

(_timedelta_to_milliseconds

605

(timeout), self.disable))

1001

self.disable_initiator_tag = GLib.timeout_add(

1002

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

606

1003

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

607

1004

608

1005

def need_approval(self):

614

1011

If a checker already exists, leave it running and do

615

1012

nothing."""

616

1013

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

617

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

618

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

619

# client would inevitably timeout, since no checker would get

620

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

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

621

1018

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

622

1019

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

623

1020

# should be.

624

1021

625

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

626

try:

627

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

628

except (AttributeError, OSError) as error:

629

if (isinstance(error, OSError)

630

and error.errno != errno.ECHILD):

631

raise error

632

else:

633

if pid:

634

logger.warning("Checker was a zombie")

635

gobject.source_remove(self.checker_callback_tag)

636

self.checker_callback(pid, status,

637

self.current_checker_command)

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

638

1026

# Start a new checker if needed

639

1027

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 }

640

1032

try:

641

# In case checker_command has exactly one % operator

642

command = self.checker_command % self.host

643

except TypeError:

644

# Escape attributes for the shell

645

escaped_attrs = dict(

646

(attr,

647

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

648

errors=

649

'replace')))

650

for attr in

651

self.runtime_expansions)

652

653

try:

654

command = self.checker_command % escaped_attrs

655

except TypeError as error:

656

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

657

' %s', self.checker_command, error)

658

return True # Try again later

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

659

1039

self.current_checker_command = command

660

try:

661

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

662

command, self.name)

663

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

664

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

665

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

666

# always replaced by /dev/null.)

667

self.checker = subprocess.Popen(command,

668

close_fds=True,

669

shell=True, cwd="/")

670

self.checker_callback_tag = (gobject.child_watch_add

671

(self.checker.pid,

672

self.checker_callback,

673

data=command))

674

# The checker may have completed before the gobject

675

# watch was added. Check for this.

676

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

677

if pid:

678

gobject.source_remove(self.checker_callback_tag)

679

self.checker_callback(pid, status, command)

680

except OSError as error:

681

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

682

error)

683

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

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

684

1066

return True

685

1067

686

1068

def stop_checker(self):

687

1069

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

688

1070

if self.checker_callback_tag:

689

gobject.source_remove(self.checker_callback_tag)

1071

GLib.source_remove(self.checker_callback_tag)

690

1072

self.checker_callback_tag = None

691

1073

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

692

1074

return

693

1075

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

694

try:

695

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

696

#time.sleep(0.5)

697

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

698

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

699

except OSError as error:

700

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

701

raise

1076

self.checker.terminate()

702

1077

self.checker = None

703

1078

704

1079

705

def dbus_service_property(dbus_interface, signature="v",

706

access="readwrite", byte_arrays=False):

1080

def dbus_service_property(dbus_interface,

1081

signature="v",

1082

access="readwrite",

1083

byte_arrays=False):

707

1084

"""Decorators for marking methods of a DBusObjectWithProperties to

708

1085

become properties on the D-Bus.

709

1086

718

1095

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

719

1096

if byte_arrays and signature != "ay":

720

1097

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

721

" signature %r" % signature)

1098

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

1099

722

1100

def decorator(func):

723

1101

func._dbus_is_property = True

724

1102

func._dbus_interface = dbus_interface

729

1107

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

730

1108

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

731

1109

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

732

1154

return decorator

733

1155

734

1156

735

1157

class DBusPropertyException(dbus.exceptions.DBusException):

736

1158

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

737

1159

"""

738

def __unicode__(self):

739

return unicode(str(self))

1160

pass

740

1161

741

1162

742

1163

class DBusPropertyAccessException(DBusPropertyException):

751

1172

pass

752

1173

753

1174

754

class DBusObjectWithProperties(dbus.service.Object):

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):

755

1265

"""A D-Bus object with properties.

756

1266

757

1267

Classes inheriting from this can use the dbus_service_property

759

1269

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

760

1270

"""

761

1271

762

@staticmethod

763

def _is_dbus_property(obj):

764

return getattr(obj, "_dbus_is_property", False)

765

766

def _get_all_dbus_properties(self):

767

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

768

"""

769

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

770

for cls in self.__class__.__mro__

771

for name, prop in

772

inspect.getmembers(cls, self._is_dbus_property))

773

774

1272

def _get_dbus_property(self, interface_name, property_name):

775

1273

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

776

1274

property with the specified name and interface.

777

1275

"""

778

for cls in self.__class__.__mro__:

779

for name, value in (inspect.getmembers

780

(cls, self._is_dbus_property)):

1276

for cls in self.__class__.__mro__:

1277

for name, value in inspect.getmembers(

1278

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

781

1279

if (value._dbus_name == property_name

782

1280

and value._dbus_interface == interface_name):

783

1281

return value.__get__(self)

784

1282

785

1283

# No such property

786

raise DBusPropertyNotFound(self.dbus_object_path + ":"

787

+ interface_name + "."

788

+ property_name)

789

790

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

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",

791

1298

out_signature="v")

792

1299

def Get(self, interface_name, property_name):

793

1300

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

811

1318

# The byte_arrays option is not supported yet on

812

1319

# signatures other than "ay".

813

1320

if prop._dbus_signature != "ay":

814

raise ValueError

815

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

816

for byte in value))

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))

817

1326

prop(value)

818

1327

819

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

1328

@dbus.service.method(dbus.PROPERTIES_IFACE,

1329

in_signature="s",

820

1330

out_signature="a{sv}")

821

1331

def GetAll(self, interface_name):

822

1332

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

825

1335

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

826

1336

"""

827

1337

properties = {}

828

for name, prop in self._get_all_dbus_properties():

1338

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

829

1339

if (interface_name

830

1340

and interface_name != prop._dbus_interface):

831

1341

# Interface non-empty but did not match

837

1347

if not hasattr(value, "variant_level"):

838

1348

properties[name] = value

839

1349

continue

840

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

841

value.variant_level+1)

1350

properties[name] = type(value)(

1351

value, variant_level = value.variant_level + 1)

842

1352

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

843

1353

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

844

1362

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

845

1363

out_signature="s",

846

1364

path_keyword='object_path',

847

1365

connection_keyword='connection')

848

1366

def Introspect(self, object_path, connection):

849

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

1367

"""Overloading of standard D-Bus method.

1368

1369

Inserts property tags and interface annotation tags.

850

1370

"""

851

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

852

connection)

1371

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1372

object_path,

1373

connection)

853

1374

try:

854

1375

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

1376

855

1377

def make_tag(document, name, prop):

856

1378

e = document.createElement("property")

857

1379

e.setAttribute("name", name)

858

1380

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

859

1381

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

860

1382

return e

1383

861

1384

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

1385

# Add property tags

862

1386

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

863

1387

for name, prop

864

in self._get_all_dbus_properties()

1388

in self._get_all_dbus_things("property")

865

1389

if prop._dbus_interface

866

1390

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

867

1391

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)

868

1408

# Add the names to the return values for the

869

1409

# "org.freedesktop.DBus.Properties" methods

870

1410

if (if_tag.getAttribute("name")

885

1425

except (AttributeError, xml.dom.DOMException,

886

1426

xml.parsers.expat.ExpatError) as error:

887

1427

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

888

error)

889

return xmlstring

890

891

892

def datetime_to_dbus (dt, variant_level=0):

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):

893

1501

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

894

1502

if dt is None:

895

1503

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

896

return dbus.String(dt.isoformat(),

897

variant_level=variant_level)

898

899

900

class AlternateDBusNamesMetaclass(DBusObjectWithProperties

901

.__metaclass__):

902

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

903

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

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).

904

1529

"""

905

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

906

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

907

# methods, signals, or properties in them

908

for base in (b for b in bases

909

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

910

# Go though all attributes of the base class

911

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

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):

912

1538

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

913

1539

# with the wrong interface name

914

1540

if (not hasattr(attribute, "_dbus_interface")

915

or not attribute._dbus_interface

916

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

1541

or not attribute._dbus_interface.startswith(

1542

orig_interface_name)):

917

1543

continue

918

1544

# Create an alternate D-Bus interface name based on

919

1545

# the current name

920

alt_interface = (attribute._dbus_interface

921

.replace("se.recompile.Mandos",

922

"se.bsnet.fukt.Mandos"))

1546

alt_interface = attribute._dbus_interface.replace(

1547

orig_interface_name, alt_interface_name)

1548

interface_names.add(alt_interface)

923

1549

# Is this a D-Bus signal?

924

1550

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

925

# Extract the original non-method function by

926

# black magic

927

nonmethod_func = (dict(

1551

# Extract the original non-method undecorated

1552

# function by black magic

1553

if sys.version_info.major == 2:

1554

nonmethod_func = (dict(

928

1555

zip(attribute.func_code.co_freevars,

929

attribute.__closure__))["func"]

930

.cell_contents)

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)

931

1563

# Create a new, but exactly alike, function

932

1564

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

933

1565

# with the alternate D-Bus interface name

934

new_function = (dbus.service.signal

935

(alt_interface,

936

attribute._dbus_signature)

937

(types.FunctionType(

938

nonmethod_func.func_code,

939

nonmethod_func.func_globals,

940

nonmethod_func.func_name,

941

nonmethod_func.func_defaults,

942

nonmethod_func.func_closure)))

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

943

1576

# Define a creator of a function to call both the

944

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

945

# signals gets sent when the function is called

1577

# original and alternate functions, so both the

1578

# original and alternate signals gets sent when

1579

# the function is called

946

1580

def fixscope(func1, func2):

947

1581

"""This function is a scope container to pass

948

1582

func1 and func2 to the "call_both" function

949

1583

outside of its arguments"""

1584

1585

@functools.wraps(func2)

950

1586

def call_both(*args, **kwargs):

951

1587

"""This function will emit two D-Bus

952

1588

signals by calling func1 and func2"""

953

1589

func1(*args, **kwargs)

954

1590

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

955

1596

return call_both

956

1597

# Create the "call_both" function and add it to

957

1598

# the class

958

attr[attrname] = fixscope(attribute,

959

new_function)

1599

attr[attrname] = fixscope(attribute, new_function)

960

1600

# Is this a D-Bus method?

961

1601

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

962

1602

# Create a new, but exactly alike, function

963

1603

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

964

1604

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

965

1605

# to the class.

966

attr[attrname] = (dbus.service.method

967

(alt_interface,

968

attribute._dbus_in_signature,

969

attribute._dbus_out_signature)

970

(types.FunctionType

971

(attribute.func_code,

972

attribute.func_globals,

973

attribute.func_name,

974

attribute.func_defaults,

975

attribute.func_closure)))

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

976

1618

# Is this a D-Bus property?

977

1619

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

978

1620

# Create a new, but exactly alike, function

979

1621

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

980

1622

# property with the alternate D-Bus interface

981

1623

# name. Add it to the class.

982

attr[attrname] = (dbus_service_property

983

(alt_interface,

984

attribute._dbus_signature,

985

attribute._dbus_access,

986

attribute

987

._dbus_get_args_options

988

["byte_arrays"])

989

(types.FunctionType

990

(attribute.func_code,

991

attribute.func_globals,

992

attribute.func_name,

993

attribute.func_defaults,

994

attribute.func_closure)))

995

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

996

997

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"})

998

1676

class ClientDBus(Client, DBusObjectWithProperties):

999

1677

"""A Client class using D-Bus

1000

1678

1004

1682

"""

1005

1683

1006

1684

runtime_expansions = (Client.runtime_expansions

1007

+ ("dbus_object_path",))

1685

+ ("dbus_object_path", ))

1686

1687

_interface = "se.recompile.Mandos.Client"

1008

1688

1009

1689

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

1010

1690

1011

1691

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

1012

1692

self.bus = bus

1013

1693

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

1014

1015

self._approvals_pending = 0

1016

1694

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

1017

1695

# the D-Bus

1018

client_object_name = unicode(self.name).translate(

1696

client_object_name = str(self.name).translate(

1019

1697

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

1020

1698

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

1021

self.dbus_object_path = (dbus.ObjectPath

1022

("/clients/" + client_object_name))

1699

self.dbus_object_path = dbus.ObjectPath(

1700

"/clients/" + client_object_name)

1023

1701

DBusObjectWithProperties.__init__(self, self.bus,

1024

1702

self.dbus_object_path)

1025

1026

def notifychangeproperty(transform_func,

1027

dbus_name, type_func=lambda x: x,

1028

variant_level=1):

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):

1029

1709

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

1030

1710

its changes to DBus.

1031

1711

1036

1716

to the D-Bus. Default: no transform

1037

1717

variant_level: D-Bus variant level. Default: 1

1038

1718

"""

1039

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

1719

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

1720

1040

1721

def setter(self, value):

1041

1722

if hasattr(self, "dbus_object_path"):

1042

1723

if (not hasattr(self, attrname) or

1043

1724

type_func(getattr(self, attrname, None))

1044

1725

!= type_func(value)):

1045

dbus_value = transform_func(type_func(value),

1046

variant_level

1047

=variant_level)

1048

self.PropertyChanged(dbus.String(dbus_name),

1049

dbus_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())

1050

1741

setattr(self, attrname, value)

1051

1742

1052

1743

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

1053

1744

1054

1055

1745

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1056

1746

approvals_pending = notifychangeproperty(dbus.Boolean,

1057

1747

"ApprovalPending",

1059

1749

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

1060

1750

last_enabled = notifychangeproperty(datetime_to_dbus,

1061

1751

"LastEnabled")

1062

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

1063

type_func = lambda checker:

1064

checker is not None)

1752

checker = notifychangeproperty(

1753

dbus.Boolean, "CheckerRunning",

1754

type_func = lambda checker: checker is not None)

1065

1755

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1066

1756

"LastCheckedOK")

1757

last_checker_status = notifychangeproperty(dbus.Int16,

1758

"LastCheckerStatus")

1067

1759

last_approval_request = notifychangeproperty(

1068

1760

datetime_to_dbus, "LastApprovalRequest")

1069

1761

approved_by_default = notifychangeproperty(dbus.Boolean,

1070

1762

"ApprovedByDefault")

1071

approval_delay = notifychangeproperty(dbus.UInt16,

1072

"ApprovalDelay",

1073

type_func =

1074

_timedelta_to_milliseconds)

1763

approval_delay = notifychangeproperty(

1764

dbus.UInt64, "ApprovalDelay",

1765

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

1075

1766

approval_duration = notifychangeproperty(

1076

dbus.UInt16, "ApprovalDuration",

1077

type_func = _timedelta_to_milliseconds)

1767

dbus.UInt64, "ApprovalDuration",

1768

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

1078

1769

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

1079

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

1080

type_func =

1081

_timedelta_to_milliseconds)

1770

timeout = notifychangeproperty(

1771

dbus.UInt64, "Timeout",

1772

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

1082

1773

extended_timeout = notifychangeproperty(

1083

dbus.UInt16, "ExtendedTimeout",

1084

type_func = _timedelta_to_milliseconds)

1085

interval = notifychangeproperty(dbus.UInt16,

1086

"Interval",

1087

type_func =

1088

_timedelta_to_milliseconds)

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)

1089

1779

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

1780

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

1781

invalidate_only=True)

1090

1782

1091

1783

del notifychangeproperty

1092

1784

1099

1791

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

1100

1792

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

1101

1793

1102

def checker_callback(self, pid, condition, command,

1103

*args, **kwargs):

1104

self.checker_callback_tag = None

1105

self.checker = None

1106

if os.WIFEXITED(condition):

1107

exitstatus = os.WEXITSTATUS(condition)

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:

1108

1801

# Emit D-Bus signal

1109

1802

self.CheckerCompleted(dbus.Int16(exitstatus),

1110

dbus.Int64(condition),

1803

# This is specific to GNU libC

1804

dbus.Int64(exitstatus << 8),

1111

1805

dbus.String(command))

1112

1806

else:

1113

1807

# Emit D-Bus signal

1114

1808

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

1115

dbus.Int64(condition),

1809

dbus.Int64(

1810

# This is specific to GNU libC

1811

(exitstatus << 8)

1812

| self.last_checker_signal),

1116

1813

dbus.String(command))

1117

1118

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

1119

*args, **kwargs)

1814

return ret

1120

1815

1121

1816

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

1122

old_checker = self.checker

1123

if self.checker is not None:

1124

old_checker_pid = self.checker.pid

1125

else:

1126

old_checker_pid = None

1817

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

1127

1818

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

1128

1819

# Only if new checker process was started

1129

1820

if (self.checker is not None

1133

1824

return r

1134

1825

1135

1826

def _reset_approved(self):

1136

self._approved = None

1827

self.approved = None

1137

1828

return False

1138

1829

1139

1830

def approve(self, value=True):

1831

self.approved = value

1832

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

1833

* 1000), self._reset_approved)

1140

1834

self.send_changedstate()

1141

self._approved = value

1142

gobject.timeout_add(_timedelta_to_milliseconds

1143

(self.approval_duration),

1144

self._reset_approved)

1145

1146

1835

1147

1836

## D-Bus methods, signals & properties

1148

_interface = "se.recompile.Mandos.Client"

1837

1838

## Interfaces

1149

1839

1150

1840

## Signals

1151

1841

1162

1852

pass

1163

1853

1164

1854

# PropertyChanged - signal

1855

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

1165

1856

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

1166

1857

def PropertyChanged(self, property, value):

1167

1858

"D-Bus signal"

1188

1879

"D-Bus signal"

1189

1880

return self.need_approval()

1190

1881

1191

# NeRwequest - signal

1192

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

1193

def NewRequest(self, ip):

1194

"""D-Bus signal

1195

Is sent after a client request a password.

1196

"""

1197

pass

1198

1199

1882

## Methods

1200

1883

1201

1884

# Approve - method

1209

1892

self.checked_ok()

1210

1893

1211

1894

# Enable - method

1895

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

1212

1896

@dbus.service.method(_interface)

1213

1897

def Enable(self):

1214

1898

"D-Bus method"

1215

1899

self.enable()

1216

1900

1217

1901

# StartChecker - method

1902

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

1218

1903

@dbus.service.method(_interface)

1219

1904

def StartChecker(self):

1220

1905

"D-Bus method"

1221

1906

self.start_checker()

1222

1907

1223

1908

# Disable - method

1909

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

1224

1910

@dbus.service.method(_interface)

1225

1911

def Disable(self):

1226

1912

"D-Bus method"

1227

1913

self.disable()

1228

1914

1229

1915

# StopChecker - method

1916

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

1230

1917

@dbus.service.method(_interface)

1231

1918

def StopChecker(self):

1232

1919

self.stop_checker()

1239

1926

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

1240

1927

1241

1928

# ApprovedByDefault - property

1242

@dbus_service_property(_interface, signature="b",

1929

@dbus_service_property(_interface,

1930

signature="b",

1243

1931

access="readwrite")

1244

1932

def ApprovedByDefault_dbus_property(self, value=None):

1245

1933

if value is None: # get

1247

1935

self.approved_by_default = bool(value)

1248

1936

1249

1937

# ApprovalDelay - property

1250

@dbus_service_property(_interface, signature="t",

1938

@dbus_service_property(_interface,

1939

signature="t",

1251

1940

access="readwrite")

1252

1941

def ApprovalDelay_dbus_property(self, value=None):

1253

1942

if value is None: # get

1254

return dbus.UInt64(self.approval_delay_milliseconds())

1943

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

1944

* 1000)

1255

1945

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

1256

1946

1257

1947

# ApprovalDuration - property

1258

@dbus_service_property(_interface, signature="t",

1948

@dbus_service_property(_interface,

1949

signature="t",

1259

1950

access="readwrite")

1260

1951

def ApprovalDuration_dbus_property(self, value=None):

1261

1952

if value is None: # get

1262

return dbus.UInt64(_timedelta_to_milliseconds(

1263

self.approval_duration))

1953

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

1954

* 1000)

1264

1955

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

1265

1956

1266

1957

# Name - property

1958

@dbus_annotations(

1959

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

1267

1960

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

1268

1961

def Name_dbus_property(self):

1269

1962

return dbus.String(self.name)

1270

1963

1271

1964

# Fingerprint - property

1965

@dbus_annotations(

1966

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

1272

1967

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

1273

1968

def Fingerprint_dbus_property(self):

1274

1969

return dbus.String(self.fingerprint)

1275

1970

1276

1971

# Host - property

1277

@dbus_service_property(_interface, signature="s",

1972

@dbus_service_property(_interface,

1973

signature="s",

1278

1974

access="readwrite")

1279

1975

def Host_dbus_property(self, value=None):

1280

1976

if value is None: # get

1281

1977

return dbus.String(self.host)

1282

self.host = value

1978

self.host = str(value)

1283

1979

1284

1980

# Created - property

1981

@dbus_annotations(

1982

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

1285

1983

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

1286

1984

def Created_dbus_property(self):

1287

1985

return datetime_to_dbus(self.created)

1292

1990

return datetime_to_dbus(self.last_enabled)

1293

1991

1294

1992

# Enabled - property

1295

@dbus_service_property(_interface, signature="b",

1993

@dbus_service_property(_interface,

1994

signature="b",

1296

1995

access="readwrite")

1297

1996

def Enabled_dbus_property(self, value=None):

1298

1997

if value is None: # get

1303

2002

self.disable()

1304

2003

1305

2004

# LastCheckedOK - property

1306

@dbus_service_property(_interface, signature="s",

2005

@dbus_service_property(_interface,

2006

signature="s",

1307

2007

access="readwrite")

1308

2008

def LastCheckedOK_dbus_property(self, value=None):

1309

2009

if value is not None:

1311

2011

return

1312

2012

return datetime_to_dbus(self.last_checked_ok)

1313

2013

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

1314

2019

# Expires - property

1315

2020

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

1316

2021

def Expires_dbus_property(self):

1322

2027

return datetime_to_dbus(self.last_approval_request)

1323

2028

1324

2029

# Timeout - property

1325

@dbus_service_property(_interface, signature="t",

2030

@dbus_service_property(_interface,

2031

signature="t",

1326

2032

access="readwrite")

1327

2033

def Timeout_dbus_property(self, value=None):

1328

2034

if value is None: # get

1329

return dbus.UInt64(self.timeout_milliseconds())

2035

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

2036

old_timeout = self.timeout

1330

2037

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

1331

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

1332

return

1333

# Reschedule timeout

1334

gobject.source_remove(self.disable_initiator_tag)

1335

self.disable_initiator_tag = None

1336

self.expires = None

1337

time_to_die = _timedelta_to_milliseconds((self

1338

.last_checked_ok

1339

+ self.timeout)

1340

- datetime.datetime

1341

.utcnow())

1342

if time_to_die <= 0:

1343

# The timeout has passed

1344

self.disable()

1345

else:

1346

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

1347

+ datetime.timedelta(milliseconds =

1348

time_to_die))

1349

self.disable_initiator_tag = (gobject.timeout_add

1350

(time_to_die, self.disable))

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)

1351

2053

1352

2054

# ExtendedTimeout - property

1353

@dbus_service_property(_interface, signature="t",

2055

@dbus_service_property(_interface,

2056

signature="t",

1354

2057

access="readwrite")

1355

2058

def ExtendedTimeout_dbus_property(self, value=None):

1356

2059

if value is None: # get

1357

return dbus.UInt64(self.extended_timeout_milliseconds())

2060

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

2061

* 1000)

1358

2062

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

1359

2063

1360

2064

# Interval - property

1361

@dbus_service_property(_interface, signature="t",

2065

@dbus_service_property(_interface,

2066

signature="t",

1362

2067

access="readwrite")

1363

2068

def Interval_dbus_property(self, value=None):

1364

2069

if value is None: # get

1365

return dbus.UInt64(self.interval_milliseconds())

2070

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

1366

2071

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

1367

2072

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

1368

2073

return

1369

2074

if self.enabled:

1370

2075

# Reschedule checker run

1371

gobject.source_remove(self.checker_initiator_tag)

1372

self.checker_initiator_tag = (gobject.timeout_add

1373

(value, self.start_checker))

1374

self.start_checker() # Start one now, too

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

1375

2080

1376

2081

# Checker - property

1377

@dbus_service_property(_interface, signature="s",

2082

@dbus_service_property(_interface,

2083

signature="s",

1378

2084

access="readwrite")

1379

2085

def Checker_dbus_property(self, value=None):

1380

2086

if value is None: # get

1381

2087

return dbus.String(self.checker_command)

1382

self.checker_command = value

2088

self.checker_command = str(value)

1383

2089

1384

2090

# CheckerRunning - property

1385

@dbus_service_property(_interface, signature="b",

2091

@dbus_service_property(_interface,

2092

signature="b",

1386

2093

access="readwrite")

1387

2094

def CheckerRunning_dbus_property(self, value=None):

1388

2095

if value is None: # get

1393

2100

self.stop_checker()

1394

2101

1395

2102

# ObjectPath - property

2103

@dbus_annotations(

2104

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

2105

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

1396

2106

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

1397

2107

def ObjectPath_dbus_property(self):

1398

2108

return self.dbus_object_path # is already a dbus.ObjectPath

1399

2109

1400

2110

# Secret = property

1401

@dbus_service_property(_interface, signature="ay",

1402

access="write", byte_arrays=True)

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)

1403

2118

def Secret_dbus_property(self, value):

1404

self.secret = str(value)

2119

self.secret = bytes(value)

1405

2120

1406

2121

del _interface

1407

2122

1411

2126

self._pipe = child_pipe

1412

2127

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

1413

2128

if not self._pipe.recv():

1414

raise KeyError()

2129

raise KeyError(fpr)

1415

2130

1416

2131

def __getattribute__(self, name):

1417

if(name == '_pipe'):

2132

if name == '_pipe':

1418

2133

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

1419

2134

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

1420

2135

data = self._pipe.recv()

1421

2136

if data[0] == 'data':

1422

2137

return data[1]

1423

2138

if data[0] == 'function':

2139

1424

2140

def func(*args, **kwargs):

1425

2141

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

1426

2142

return self._pipe.recv()[1]

2143

1427

2144

return func

1428

2145

1429

2146

def __setattr__(self, name, value):

1430

if(name == '_pipe'):

2147

if name == '_pipe':

1431

2148

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

1432

2149

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

1433

2150

1434

2151

1435

class ClientDBusTransitional(ClientDBus):

1436

__metaclass__ = AlternateDBusNamesMetaclass

1437

1438

1439

2152

class ClientHandler(socketserver.BaseRequestHandler, object):

1440

2153

"""A class to handle client connections.

1441

2154

1445

2158

def handle(self):

1446

2159

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

1447

2160

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

1448

unicode(self.client_address))

2161

str(self.client_address))

1449

2162

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

1450

2163

self.server.child_pipe.fileno())

1451

2164

1452

session = (gnutls.connection

1453

.ClientSession(self.request,

1454

gnutls.connection

1455

.X509Credentials()))

1456

1457

# Note: gnutls.connection.X509Credentials is really a

1458

# generic GnuTLS certificate credentials object so long as

1459

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

1460

# here despite using OpenPGP certificates.

2165

session = gnutls.ClientSession(self.request)

1461

2166

1462

2167

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

1463

2168

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

1467

2172

priority = self.server.gnutls_priority

1468

2173

if priority is None:

1469

2174

priority = "NORMAL"

1470

(gnutls.library.functions

1471

.gnutls_priority_set_direct(session._c_object,

1472

priority, None))

2175

gnutls.priority_set_direct(session._c_object, priority,

2176

None)

1473

2177

1474

2178

# Start communication using the Mandos protocol

1475

2179

# Get protocol number

1477

2181

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

1478

2182

try:

1479

2183

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

1480

raise RuntimeError

2184

raise RuntimeError(line)

1481

2185

except (ValueError, IndexError, RuntimeError) as error:

1482

2186

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

1483

2187

return

1485

2189

# Start GnuTLS connection

1486

2190

try:

1487

2191

session.handshake()

1488

except gnutls.errors.GNUTLSError as error:

2192

except gnutls.Error as error:

1489

2193

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

1490

2194

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

1491

2195

# established. Just abandon the request.

1495

2199

approval_required = False

1496

2200

try:

1497

2201

try:

1498

fpr = self.fingerprint(self.peer_certificate

1499

(session))

1500

except (TypeError,

1501

gnutls.errors.GNUTLSError) as error:

2202

fpr = self.fingerprint(

2203

self.peer_certificate(session))

2204

except (TypeError, gnutls.Error) as error:

1502

2205

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

1503

2206

return

1504

2207

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

1505

if self.server.use_dbus:

1506

# Emit D-Bus signal

1507

client.NewRequest(str(self.client_address))

1508

2208

1509

2209

try:

1510

2210

client = ProxyClient(child_pipe, fpr,

1520

2220

while True:

1521

2221

if not client.enabled:

1522

2222

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

1523

client.name)

2223

client.name)

1524

2224

if self.server.use_dbus:

1525

2225

# Emit D-Bus signal

1526

2226

client.Rejected("Disabled")

1527

2227

return

1528

2228

1529

if client._approved or not client.approval_delay:

2229

if client.approved or not client.approval_delay:

1530

2230

#We are approved or approval is disabled

1531

2231

break

1532

elif client._approved is None:

2232

elif client.approved is None:

1533

2233

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

1534

2234

client.name)

1535

2235

if self.server.use_dbus:

1536

2236

# Emit D-Bus signal

1537

2237

client.NeedApproval(

1538

client.approval_delay_milliseconds(),

1539

client.approved_by_default)

2238

client.approval_delay.total_seconds()

2239

* 1000, client.approved_by_default)

1540

2240

else:

1541

2241

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

1542

2242

client.name)

1548

2248

#wait until timeout or approved

1549

2249

time = datetime.datetime.now()

1550

2250

client.changedstate.acquire()

1551

(client.changedstate.wait

1552

(float(client._timedelta_to_milliseconds(delay)

1553

/ 1000)))

2251

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

1554

2252

client.changedstate.release()

1555

2253

time2 = datetime.datetime.now()

1556

2254

if (time2 - time) >= delay:

1567

2265

else:

1568

2266

delay -= time2 - time

1569

2267

1570

sent_size = 0

1571

while sent_size < len(client.secret):

1572

try:

1573

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

1574

except gnutls.errors.GNUTLSError as error:

1575

logger.warning("gnutls send failed")

1576

return

1577

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

1578

sent, len(client.secret)

1579

- (sent_size + sent))

1580

sent_size += sent

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

1581

2274

1582

2275

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

1583

2276

# bump the timeout using extended_timeout

1584

client.checked_ok(client.extended_timeout)

2277

client.bump_timeout(client.extended_timeout)

1585

2278

if self.server.use_dbus:

1586

2279

# Emit D-Bus signal

1587

2280

client.GotSecret()

1591

2284

client.approvals_pending -= 1

1592

2285

try:

1593

2286

session.bye()

1594

except gnutls.errors.GNUTLSError as error:

1595

logger.warning("GnuTLS bye failed")

2287

except gnutls.Error as error:

2288

logger.warning("GnuTLS bye failed",

2289

exc_info=error)

1596

2290

1597

2291

@staticmethod

1598

2292

def peer_certificate(session):

1599

2293

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

1600

2294

# If not an OpenPGP certificate...

1601

if (gnutls.library.functions

1602

.gnutls_certificate_type_get(session._c_object)

1603

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1604

# ...do the normal thing

1605

return session.peer_certificate

2295

if (gnutls.certificate_type_get(session._c_object)

2296

!= gnutls.CRT_OPENPGP):

2297

# ...return invalid data

2298

return b""

1606

2299

list_size = ctypes.c_uint(1)

1607

cert_list = (gnutls.library.functions

1608

.gnutls_certificate_get_peers

2300

cert_list = (gnutls.certificate_get_peers

1609

2301

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

1610

2302

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

1611

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

1612

" certificate")

2303

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

1613

2304

if list_size.value == 0:

1614

2305

return None

1615

2306

cert = cert_list[0]

1619

2310

def fingerprint(openpgp):

1620

2311

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

1621

2312

# New GnuTLS "datum" with the OpenPGP public key

1622

datum = (gnutls.library.types

1623

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

1624

ctypes.POINTER

1625

(ctypes.c_ubyte)),

1626

ctypes.c_uint(len(openpgp))))

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)))

1627

2317

# New empty GnuTLS certificate

1628

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1629

(gnutls.library.functions

1630

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

2318

crt = gnutls.openpgp_crt_t()

2319

gnutls.openpgp_crt_init(ctypes.byref(crt))

1631

2320

# Import the OpenPGP public key into the certificate

1632

(gnutls.library.functions

1633

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

1634

gnutls.library.constants

1635

.GNUTLS_OPENPGP_FMT_RAW))

2321

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

2322

gnutls.OPENPGP_FMT_RAW)

1636

2323

# Verify the self signature in the key

1637

2324

crtverify = ctypes.c_uint()

1638

(gnutls.library.functions

1639

.gnutls_openpgp_crt_verify_self(crt, 0,

1640

ctypes.byref(crtverify)))

2325

gnutls.openpgp_crt_verify_self(crt, 0,

2326

ctypes.byref(crtverify))

1641

2327

if crtverify.value != 0:

1642

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1643

raise (gnutls.errors.CertificateSecurityError

1644

("Verify failed"))

2328

gnutls.openpgp_crt_deinit(crt)

2329

raise gnutls.CertificateSecurityError("Verify failed")

1645

2330

# New buffer for the fingerprint

1646

2331

buf = ctypes.create_string_buffer(20)

1647

2332

buf_len = ctypes.c_size_t()

1648

2333

# Get the fingerprint from the certificate into the buffer

1649

(gnutls.library.functions

1650

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

1651

ctypes.byref(buf_len)))

2334

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

2335

ctypes.byref(buf_len))

1652

2336

# Deinit the certificate

1653

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

2337

gnutls.openpgp_crt_deinit(crt)

1654

2338

# Convert the buffer to a Python bytestring

1655

2339

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

1656

2340

# Convert the bytestring to hexadecimal notation

1660

2344

1661

2345

class MultiprocessingMixIn(object):

1662

2346

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

2347

1663

2348

def sub_process_main(self, request, address):

1664

2349

try:

1665

2350

self.finish_request(request, address)

1666

except:

2351

except Exception:

1667

2352

self.handle_error(request, address)

1668

2353

self.close_request(request)

1669

2354

1670

2355

def process_request(self, request, address):

1671

2356

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

1672

2357

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

1673

args = (request,

1674

address))

2358

args = (request, address))

1675

2359

proc.start()

1676

2360

return proc

1677

2361

1678

2362

1679

2363

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

1680

2364

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

2365

1681

2366

def process_request(self, request, client_address):

1682

2367

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

1683

2368

1692

2377

1693

2378

def add_pipe(self, parent_pipe, proc):

1694

2379

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

1695

raise NotImplementedError

2380

raise NotImplementedError()

1696

2381

1697

2382

1698

2383

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

1704

2389

interface: None or a network interface name (string)

1705

2390

use_ipv6: Boolean; to use IPv6 or not

1706

2391

"""

2392

1707

2393

def __init__(self, server_address, RequestHandlerClass,

1708

interface=None, use_ipv6=True):

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

"""

1709

2400

self.interface = interface

1710

2401

if use_ipv6:

1711

2402

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.

1712

2429

socketserver.TCPServer.__init__(self, server_address,

1713

2430

RequestHandlerClass)

2431

1714

2432

def server_bind(self):

1715

2433

"""This overrides the normal server_bind() function

1716

2434

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

1722

2440

self.interface)

1723

2441

else:

1724

2442

try:

1725

self.socket.setsockopt(socket.SOL_SOCKET,

1726

SO_BINDTODEVICE,

1727

str(self.interface

1728

+ '\0'))

2443

self.socket.setsockopt(

2444

socket.SOL_SOCKET, SO_BINDTODEVICE,

2445

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

1729

2446

except socket.error as error:

1730

if error[0] == errno.EPERM:

1731

logger.error("No permission to"

1732

" bind to interface %s",

1733

self.interface)

1734

elif error[0] == errno.ENOPROTOOPT:

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:

1735

2451

logger.error("SO_BINDTODEVICE not available;"

1736

2452

" cannot bind to interface %s",

1737

2453

self.interface)

2454

elif error.errno == errno.ENODEV:

2455

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

2456

" cannot bind", self.interface)

1738

2457

else:

1739

2458

raise

1740

2459

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

1743

2462

if self.address_family == socket.AF_INET6:

1744

2463

any_address = "::" # in6addr_any

1745

2464

else:

1746

any_address = socket.INADDR_ANY

2465

any_address = "0.0.0.0" # INADDR_ANY

1747

2466

self.server_address = (any_address,

1748

2467

self.server_address[1])

1749

2468

elif not self.server_address[1]:

1750

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

1751

0)

2469

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

1752

2470

# if self.interface:

1753

2471

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

1754

2472

# 0, # port

1766

2484

gnutls_priority GnuTLS priority string

1767

2485

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

1768

2486

1769

Assumes a gobject.MainLoop event loop.

2487

Assumes a GLib.MainLoop event loop.

1770

2488

"""

2489

1771

2490

def __init__(self, server_address, RequestHandlerClass,

1772

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

1773

gnutls_priority=None, use_dbus=True):

2491

interface=None,

2492

use_ipv6=True,

2493

clients=None,

2494

gnutls_priority=None,

2495

use_dbus=True,

2496

socketfd=None):

1774

2497

self.enabled = False

1775

2498

self.clients = clients

1776

2499

if self.clients is None:

1780

2503

IPv6_TCPServer.__init__(self, server_address,

1781

2504

RequestHandlerClass,

1782

2505

interface = interface,

1783

use_ipv6 = use_ipv6)

2506

use_ipv6 = use_ipv6,

2507

socketfd = socketfd)

2508

1784

2509

def server_activate(self):

1785

2510

if self.enabled:

1786

2511

return socketserver.TCPServer.server_activate(self)

1790

2515

1791

2516

def add_pipe(self, parent_pipe, proc):

1792

2517

# Call "handle_ipc" for both data and EOF events

1793

gobject.io_add_watch(parent_pipe.fileno(),

1794

gobject.IO_IN | gobject.IO_HUP,

1795

functools.partial(self.handle_ipc,

1796

parent_pipe =

1797

parent_pipe,

1798

proc = proc))

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))

1799

2524

1800

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

1801

proc = None, client_object=None):

1802

condition_names = {

1803

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

1804

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

1805

# blocking).

1806

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

1807

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

1808

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

1809

# broken, usually for pipes and

1810

# sockets).

1811

}

1812

conditions_string = ' | '.join(name

1813

for cond, name in

1814

condition_names.iteritems()

1815

if cond & condition)

2525

def handle_ipc(self, source, condition,

2526

parent_pipe=None,

2527

proc = None,

2528

client_object=None):

1816

2529

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

1817

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

2530

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

1818

2531

# Wait for other process to exit

1819

2532

proc.join()

1820

2533

return False

1827

2540

fpr = request[1]

1828

2541

address = request[2]

1829

2542

1830

for c in self.clients.itervalues():

2543

for c in self.clients.values():

1831

2544

if c.fingerprint == fpr:

1832

2545

client = c

1833

2546

break

1841

2554

parent_pipe.send(False)

1842

2555

return False

1843

2556

1844

gobject.io_add_watch(parent_pipe.fileno(),

1845

gobject.IO_IN | gobject.IO_HUP,

1846

functools.partial(self.handle_ipc,

1847

parent_pipe =

1848

parent_pipe,

1849

proc = proc,

1850

client_object =

1851

client))

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))

1852

2564

parent_pipe.send(True)

1853

2565

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

1854

2566

# same fileno

1860

2572

1861

2573

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

1862

2574

funcname)(*args,

1863

**kwargs)))

2575

**kwargs)))

1864

2576

1865

2577

if command == 'getattr':

1866

2578

attrname = request[1]

1867

if callable(client_object.__getattribute__(attrname)):

1868

parent_pipe.send(('function',))

2579

if isinstance(client_object.__getattribute__(attrname),

2580

collections.Callable):

2581

parent_pipe.send(('function', ))

1869

2582

else:

1870

parent_pipe.send(('data', client_object

1871

.__getattribute__(attrname)))

2583

parent_pipe.send((

2584

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

1872

2585

1873

2586

if command == 'setattr':

1874

2587

attrname = request[1]

1878

2591

return True

1879

2592

1880

2593

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

1881

2690

def string_to_delta(interval):

1882

2691

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

1883

2692

1894

2703

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

1895

2704

datetime.timedelta(0, 330)

1896

2705

"""

2706

2707

try:

2708

return rfc3339_duration_to_delta(interval)

2709

except ValueError:

2710

pass

2711

1897

2712

timevalue = datetime.timedelta(0)

1898

2713

for s in interval.split():

1899

2714

try:

1900

suffix = unicode(s[-1])

2715

suffix = s[-1]

1901

2716

value = int(s[:-1])

1902

2717

if suffix == "d":

1903

2718

delta = datetime.timedelta(value)

1910

2725

elif suffix == "w":

1911

2726

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

1912

2727

else:

1913

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

1914

except (ValueError, IndexError) as e:

2728

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

2729

except IndexError as e:

1915

2730

raise ValueError(*(e.args))

1916

2731

timevalue += delta

1917

2732

return timevalue

1930

2745

sys.exit()

1931

2746

if not noclose:

1932

2747

# Close all standard open file descriptors

1933

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

2748

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

1934

2749

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

1935

2750

raise OSError(errno.ENODEV,

1936

"%s not a character device"

1937

% os.path.devnull)

2751

"{} not a character device"

2752

.format(os.devnull))

1938

2753

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

1939

2754

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

1940

2755

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

1949

2764

1950

2765

parser = argparse.ArgumentParser()

1951

2766

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

1952

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

2767

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

1953

2768

help="show version number and exit")

1954

2769

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

1955

2770

help="Bind to interface IF")

1961

2776

help="Run self-test")

1962

2777

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

1963

2778

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

1964

" to terminal")

2779

" to terminal", default=None)

1965

2780

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

1966

2781

help="Debug level for stdout output")

1967

2782

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

1974

2789

" files")

1975

2790

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

1976

2791

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

1977

" system bus interface")

2792

" system bus interface", default=None)

1978

2793

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

1979

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

2794

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

2795

default=None)

1980

2796

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

1981

2797

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

1982

" state")

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")

1983

2802

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

1984

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)

1985

2809

1986

2810

options = parser.parse_args()

1987

2811

1988

2812

if options.check:

1989

2813

import doctest

1990

doctest.testmod()

1991

sys.exit()

2814

fail_count, test_count = doctest.testmod()

2815

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

1992

2816

1993

2817

# Default values for config file for server-global settings

1994

2818

server_defaults = { "interface": "",

1996

2820

"port": "",

1997

2821

"debug": "False",

1998

2822

"priority":

1999

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

2823

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

2824

":+SIGN-DSA-SHA256",

2000

2825

"servicename": "Mandos",

2001

2826

"use_dbus": "True",

2002

2827

"use_ipv6": "True",

2003

2828

"debuglevel": "",

2004

2829

"restore": "True",

2005

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

2006

}

2830

"socket": "",

2831

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

2832

"foreground": "False",

2833

"zeroconf": "True",

2834

}

2007

2835

2008

2836

# Parse config file for server-global settings

2009

2837

server_config = configparser.SafeConfigParser(server_defaults)

2010

2838

del server_defaults

2011

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

2012

"mandos.conf"))

2839

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

2013

2840

# Convert the SafeConfigParser object to a dict

2014

2841

server_settings = server_config.defaults()

2015

2842

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

2016

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

2843

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

2017

2844

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

2018

2845

option)

2019

2846

if server_settings["port"]:

2020

2847

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

2021

2848

"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"])

2022

2858

del server_config

2023

2859

2024

2860

# Override the settings from the config file with command line

2025

2861

# options, if set.

2026

2862

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

2027

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

2028

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

2029

"statedir"):

2863

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

2864

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

2865

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

2030

2866

value = getattr(options, option)

2031

2867

if value is not None:

2032

2868

server_settings[option] = value

2033

2869

del options

2034

2870

# Force all strings to be unicode

2035

2871

for option in server_settings.keys():

2036

if type(server_settings[option]) is str:

2037

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

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

2038

2882

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

2039

2883

2040

2884

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

2041

2885

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

2042

2891

# For convenience

2043

2892

debug = server_settings["debug"]

2044

2893

debuglevel = server_settings["debuglevel"]

2046

2895

use_ipv6 = server_settings["use_ipv6"]

2047

2896

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

2048

2897

stored_state_file)

2898

foreground = server_settings["foreground"]

2899

zeroconf = server_settings["zeroconf"]

2049

2900

2050

2901

if debug:

2051

initlogger(logging.DEBUG)

2902

initlogger(debug, logging.DEBUG)

2052

2903

else:

2053

2904

if not debuglevel:

2054

initlogger()

2905

initlogger(debug)

2055

2906

else:

2056

2907

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

2057

initlogger(level)

2908

initlogger(debug, level)

2058

2909

2059

2910

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

2060

syslogger.setFormatter(logging.Formatter

2061

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

2062

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

2063

% server_settings["servicename"]))

2911

syslogger.setFormatter(

2912

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

2913

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

2914

server_settings["servicename"])))

2064

2915

2065

2916

# Parse config file with clients

2066

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

2067

"extended_timeout": "15m",

2068

"interval": "2m",

2069

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

2070

"host": "",

2071

"approval_delay": "0s",

2072

"approval_duration": "1s",

2073

}

2074

client_config = configparser.SafeConfigParser(client_defaults)

2917

client_config = configparser.SafeConfigParser(Client

2918

.client_defaults)

2075

2919

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

2076

2920

"clients.conf"))

2077

2921

2078

2922

global mandos_dbus_service

2079

2923

mandos_dbus_service = None

2080

2924

2081

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

2082

server_settings["port"]),

2083

ClientHandler,

2084

interface=(server_settings["interface"]

2085

or None),

2086

use_ipv6=use_ipv6,

2087

gnutls_priority=

2088

server_settings["priority"],

2089

use_dbus=use_dbus)

2090

if not debug:

2091

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

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

2092

2941

try:

2093

pidfile = open(pidfilename, "w")

2094

except IOError:

2095

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

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)

2096

2946

2097

try:

2098

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

2099

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

2100

except KeyError:

2947

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

2948

("mandos", "mandos"),

2949

("nobody", "nogroup")):

2101

2950

try:

2102

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

2103

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

2951

uid = pwd.getpwnam(name).pw_uid

2952

gid = pwd.getpwnam(group).pw_gid

2953

break

2104

2954

except KeyError:

2105

try:

2106

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

2107

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

2108

except KeyError:

2109

uid = 65534

2110

gid = 65534

2955

continue

2956

else:

2957

uid = 65534

2958

gid = 65534

2111

2959

try:

2112

2960

os.setgid(gid)

2113

2961

os.setuid(uid)

2962

if debug:

2963

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

2964

gid))

2114

2965

except OSError as error:

2115

if error[0] != errno.EPERM:

2116

raise 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

2117

2970

2118

2971

if debug:

2119

2972

# Enable all possible GnuTLS debugging

2120

2973

2121

2974

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

2122

2975

# - GnuTLS manual

2123

gnutls.library.functions.gnutls_global_set_log_level(11)

2976

gnutls.global_set_log_level(11)

2124

2977

2125

@gnutls.library.types.gnutls_log_func

2978

@gnutls.log_func

2126

2979

def debug_gnutls(level, string):

2127

2980

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

2128

2981

2129

(gnutls.library.functions

2130

.gnutls_global_set_log_function(debug_gnutls))

2982

gnutls.global_set_log_function(debug_gnutls)

2131

2983

2132

2984

# Redirect stdin so all checkers get /dev/null

2133

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

2985

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

2134

2986

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

2135

2987

if null > 2:

2136

2988

os.close(null)

2137

else:

2138

# No console logging

2139

logger.removeHandler(console)

2140

2989

2141

2990

# Need to fork before connecting to D-Bus

2142

if not debug:

2991

if not foreground:

2143

2992

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

2144

2993

daemon()

2145

2994

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

2146

2999

global main_loop

2147

3000

# From the Avahi example code

2148

DBusGMainLoop(set_as_default=True )

2149

main_loop = gobject.MainLoop()

3001

DBusGMainLoop(set_as_default=True)

3002

main_loop = GLib.MainLoop()

2150

3003

bus = dbus.SystemBus()

2151

3004

# End of Avahi example code

2152

3005

if use_dbus:

2153

3006

try:

2154

3007

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

2155

bus, do_not_queue=True)

2156

old_bus_name = (dbus.service.BusName

2157

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

2158

do_not_queue=True))

2159

except dbus.exceptions.NameExistsException as e:

2160

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

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)

2161

3015

use_dbus = False

2162

3016

server_settings["use_dbus"] = False

2163

3017

tcp_server.use_dbus = False

2164

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2165

service = AvahiServiceToSyslog(name =

2166

server_settings["servicename"],

2167

servicetype = "_mandos._tcp",

2168

protocol = protocol, bus = bus)

2169

if server_settings["interface"]:

2170

service.interface = (if_nametoindex

2171

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

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"))

2172

3028

2173

3029

global multiprocessing_manager

2174

3030

multiprocessing_manager = multiprocessing.Manager()

2175

3031

2176

3032

client_class = Client

2177

3033

if use_dbus:

2178

client_class = functools.partial(ClientDBusTransitional,

2179

bus = bus)

2180

2181

special_settings = {

2182

# Some settings need to be accessd by special methods;

2183

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

2184

"approved_by_default":

2185

lambda section:

2186

client_config.getboolean(section, "approved_by_default"),

2187

"enabled":

2188

lambda section:

2189

client_config.getboolean(section, "enabled"),

2190

}

2191

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

2192

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

2193

# with exceptions for any special settings as defined above

2194

client_settings = dict((clientname,

2195

dict((setting,

2196

(value

2197

if setting not in special_settings

2198

else special_settings[setting]

2199

(clientname)))

2200

for setting, value in

2201

client_config.items(clientname)))

2202

for clientname in client_config.sections())

2203

3034

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

3035

3036

client_settings = Client.config_parser(client_config)

2204

3037

old_client_settings = {}

2205

clients_data = []

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()

2206

3047

2207

3048

# Get client data and settings from last running state.

2208

3049

if server_settings["restore"]:

2209

3050

try:

2210

3051

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

2211

clients_data, old_client_settings = (pickle.load

2212

(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"))

2213

3097

os.remove(stored_state_path)

2214

3098

except IOError as e:

2215

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

2216

.format(e))

2217

if e.errno != errno.ENOENT:

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)

2218

3105

raise

3106

except EOFError as e:

3107

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

3108

"EOFError:",

3109

exc_info=e)

2219

3110

2220

with Crypto() as crypt:

2221

for client in clients_data:

2222

client_name = client["name"]

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

2223

3116

2224

3117

# Decide which value to use after restoring saved state.

2225

3118

# We have three different values: Old config file,

2231

3124

# For each value in new config, check if it

2232

3125

# differs from the old config value (Except for

2233

3126

# the "secret" attribute)

2234

if (name != "secret" and

2235

value != old_client_settings[client_name]

2236

[name]):

2237

setattr(client, name, value)

3127

if (name != "secret"

3128

and (value !=

3129

old_client_settings[client_name][name])):

3130

client[name] = value

2238

3131

except KeyError:

2239

3132

pass

2240

3133

2241

3134

# Clients who has passed its expire date can still be

2242

# enabled if its last checker was sucessful. Clients

2243

# whose checker failed before we stored its state is

2244

# assumed to have failed all checkers during downtime.

2245

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

2246

if ((datetime.datetime.utcnow()

2247

- client["last_checked_ok"])

2248

> client["interval"]):

2249

if client["last_checker_status"] != 0:

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"]))

2250

3154

client["enabled"] = False

2251

3155

else:

2252

client["expires"] = (datetime.datetime

2253

.utcnow()

2254

+ client["timeout"])

2255

2256

client["changedstate"] = (multiprocessing_manager

2257

.Condition

2258

(multiprocessing_manager

2259

.Lock()))

2260

if use_dbus:

2261

new_client = (ClientDBusTransitional.__new__

2262

(ClientDBusTransitional))

2263

tcp_server.clients[client_name] = new_client

2264

new_client.bus = bus

2265

for name, value in client.iteritems():

2266

setattr(new_client, name, value)

2267

client_object_name = unicode(client_name).translate(

2268

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

2269

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

2270

new_client.dbus_object_path = (dbus.ObjectPath

2271

("/clients/"

2272

+ client_object_name))

2273

DBusObjectWithProperties.__init__(new_client,

2274

new_client.bus,

2275

new_client

2276

.dbus_object_path)

2277

else:

2278

tcp_server.clients[client_name] = (Client.__new__

2279

(Client))

2280

for name, value in client.iteritems():

2281

setattr(tcp_server.clients[client_name],

2282

name, value)

2283

3156

client["expires"] = (

3157

datetime.datetime.utcnow()

3158

+ client["timeout"])

3159

logger.debug("Last checker succeeded,"

3160

" keeping {} enabled".format(

3161

client_name))

2284

3162

try:

2285

tcp_server.clients[client_name].secret = (

2286

crypt.decrypt(tcp_server.clients[client_name]

2287

.encrypted_secret,

2288

client_settings[client_name]

2289

["secret"]))

2290

except CryptoError:

3163

client["secret"] = pgp.decrypt(

3164

client["encrypted_secret"],

3165

client_settings[client_name]["secret"])

3166

except PGPError:

2291

3167

# If decryption fails, we use secret from new settings

2292

tcp_server.clients[client_name].secret = (

2293

client_settings[client_name]["secret"])

2294

2295

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

2296

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

2297

del tcp_server.clients[clientname]

2298

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

2299

tcp_server.clients[clientname] = (client_class(name

2300

= clientname,

2301

config =

2302

client_settings

2303

[clientname]))

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)

2304

3187

2305

3188

if not tcp_server.clients:

2306

3189

logger.warning("No clients defined")

2307

2308

if not debug:

2309

try:

2310

with pidfile:

2311

pid = os.getpid()

2312

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

2313

del pidfile

2314

except IOError:

2315

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

2316

pidfilename, pid)

2317

except NameError:

2318

# "pidfile" was never created

2319

pass

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

2320

3201

del pidfilename

3202

3203

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

3204

GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,

3205

lambda: main_loop.quit() and False)

3206

3207

if use_dbus:

2321

3208

2322

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

2323

2324

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

2325

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

2326

2327

if use_dbus:

2328

class MandosDBusService(dbus.service.Object):

3209

@alternate_dbus_interfaces(

3210

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

3211

class MandosDBusService(DBusObjectWithObjectManager):

2329

3212

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

3213

2330

3214

def __init__(self):

2331

3215

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

3216

2332

3217

_interface = "se.recompile.Mandos"

2333

3218

2334

3219

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

2341

3226

"D-Bus signal"

2342

3227

pass

2343

3228

3229

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

3230

"true"})

2344

3231

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

2345

3232

def ClientRemoved(self, objpath, name):

2346

3233

"D-Bus signal"

2347

3234

pass

2348

3235

3236

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

3237

"true"})

2349

3238

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

2350

3239

def GetAllClients(self):

2351

3240

"D-Bus method"

2352

return dbus.Array(c.dbus_object_path

2353

for c in

2354

tcp_server.clients.itervalues())

3241

return dbus.Array(c.dbus_object_path for c in

3242

tcp_server.clients.values())

2355

3243

3244

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

3245

"true"})

2356

3246

@dbus.service.method(_interface,

2357

3247

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

2358

3248

def GetAllClientsWithProperties(self):

2359

3249

"D-Bus method"

2360

3250

return dbus.Dictionary(

2361

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

2362

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

3251

{ c.dbus_object_path: c.GetAll(

3252

"se.recompile.Mandos.Client")

3253

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

2363

3254

signature="oa{sv}")

2364

3255

2365

3256

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

2366

3257

def RemoveClient(self, object_path):

2367

3258

"D-Bus method"

2368

for c in tcp_server.clients.itervalues():

3259

for c in tcp_server.clients.values():

2369

3260

if c.dbus_object_path == object_path:

2370

3261

del tcp_server.clients[c.name]

2371

3262

c.remove_from_connection()

2372

# Don't signal anything except ClientRemoved

3263

# Don't signal the disabling

2373

3264

c.disable(quiet=True)

2374

# Emit D-Bus signal

2375

self.ClientRemoved(object_path, c.name)

3265

# Emit D-Bus signal for removal

3266

self.client_removed_signal(c)

2376

3267

return

2377

3268

raise KeyError(object_path)

2378

3269

2379

3270

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)

2380

3307

2381

class MandosDBusServiceTransitional(MandosDBusService):

2382

__metaclass__ = AlternateDBusNamesMetaclass

2383

mandos_dbus_service = MandosDBusServiceTransitional()

3308

mandos_dbus_service = MandosDBusService()

2384

3309

2385

3310

def cleanup():

2386

3311

"Cleanup function; run on exit"

2387

service.cleanup()

3312

if zeroconf:

3313

service.cleanup()

2388

3314

2389

3315

multiprocessing.active_children()

3316

wnull.close()

2390

3317

if not (tcp_server.clients or client_settings):

2391

3318

return

2392

3319

2393

3320

# Store client before exiting. Secrets are encrypted with key

2394

3321

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

2395

3322

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

2396

clients = []

2397

with Crypto() as crypt:

2398

for client in tcp_server.clients.itervalues():

3323

clients = {}

3324

with PGPEngine() as pgp:

3325

for client in tcp_server.clients.values():

2399

3326

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

2400

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

2401

key)

3327

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

3328

key)

2402

3329

client_dict = {}

2403

3330

2404

# A list of attributes that will not be stored when

2405

# shutting down.

2406

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

2407

for name, typ in (inspect.getmembers

2408

(dbus.service.Object)):

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):

2409

3337

exclude.add(name)

2410

3338

2411

3339

client_dict["encrypted_secret"] = (client

2414

3342

if attr not in exclude:

2415

3343

client_dict[attr] = getattr(client, attr)

2416

3344

2417

clients.append(client_dict)

3345

clients[client.name] = client_dict

2418

3346

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

2419

3347

2420

3348

try:

2421

with os.fdopen(os.open(stored_state_path,

2422

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

2423

0600), "wb") as stored_state:

2424

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

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)

2425

3359

except (IOError, OSError) as e:

2426

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

2427

.format(e))

2428

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

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)

2429

3371

raise

2430

3372

2431

3373

# Delete all clients, and settings from config

2433

3375

name, client = tcp_server.clients.popitem()

2434

3376

if use_dbus:

2435

3377

client.remove_from_connection()

2436

# Don't signal anything except ClientRemoved

3378

# Don't signal the disabling

2437

3379

client.disable(quiet=True)

3380

# Emit D-Bus signal for removal

2438

3381

if use_dbus:

2439

# Emit D-Bus signal

2440

mandos_dbus_service.ClientRemoved(client

2441

.dbus_object_path,

2442

client.name)

3382

mandos_dbus_service.client_removed_signal(client)

2443

3383

client_settings.clear()

2444

3384

2445

3385

atexit.register(cleanup)

2446

3386

2447

for client in tcp_server.clients.itervalues():

3387

for client in tcp_server.clients.values():

2448

3388

if use_dbus:

2449

# Emit D-Bus signal

2450

mandos_dbus_service.ClientAdded(client.dbus_object_path)

3389

# Emit D-Bus signal for adding

3390

mandos_dbus_service.client_added_signal(client)

2451

3391

# Need to initiate checking of clients

2452

3392

if client.enabled:

2453

3393

client.init_checker()

2456

3396

tcp_server.server_activate()

2457

3397

2458

3398

# Find out what port we got

2459

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

3399

if zeroconf:

3400

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

2460

3401

if use_ipv6:

2461

3402

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

2462

" flowinfo %d, scope_id %d"

2463

% tcp_server.socket.getsockname())

3403

" flowinfo %d, scope_id %d",

3404

*tcp_server.socket.getsockname())

2464

3405

else: # IPv4

2465

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

2466

% tcp_server.socket.getsockname())

3406

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

3407

*tcp_server.socket.getsockname())

2467

3408

2468

3409

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

2469

3410

2470

3411

try:

2471

# From the Avahi example code

2472

try:

2473

service.activate()

2474

except dbus.exceptions.DBusException as error:

2475

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

2476

cleanup()

2477

sys.exit(1)

2478

# End of Avahi example code

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

2479

3421

2480

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

2481

lambda *args, **kwargs:

2482

(tcp_server.handle_request

2483

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

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))

2484

3426

2485

3427

logger.debug("Starting main loop")

2486

3428

main_loop.run()

2487

3429

except AvahiError as error:

2488

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

3430

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

2489

3431

cleanup()

2490

3432

sys.exit(1)

2491

3433

except KeyboardInterrupt: