/mandos/trunk : revision 518.2.3

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

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#

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# Everything else is

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#

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

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

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from __future__ import (division, absolute_import, print_function,

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unicode_literals)

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try:

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from future_builtins import *

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except ImportError:

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pass

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try:

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import SocketServer as socketserver

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except ImportError:

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import socketserver

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import SocketServer as socketserver

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import socket

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import argparse

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import datetime

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import errno

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try:

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import ConfigParser as configparser

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except ImportError:

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import configparser

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import gnutls.crypto

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import gnutls.connection

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import gnutls.errors

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import gnutls.library.functions

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import gnutls.library.constants

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import gnutls.library.types

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import ConfigParser as configparser

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import sys

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import re

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import os

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import struct

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import fcntl

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import functools

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try:

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import cPickle as pickle

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except ImportError:

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import pickle

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import cPickle as pickle

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import multiprocessing

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import types

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import binascii

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import tempfile

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import itertools

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import collections

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import codecs

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import dbus

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import dbus.service

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from gi.repository import GLib

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import gobject

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import avahi

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from dbus.mainloop.glib import DBusGMainLoop

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import ctypes

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import ctypes.util

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import xml.dom.minidom

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import inspect

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import GnuPGInterface

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try:

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SO_BINDTODEVICE = socket.SO_BINDTODEVICE

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except ImportError:

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SO_BINDTODEVICE = None

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if sys.version_info.major == 2:

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str = unicode

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version = "1.7.7"

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version = "1.4.1"

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stored_state_file = "clients.pickle"

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logger = logging.getLogger()

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syslogger = None

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syslogger = (logging.handlers.SysLogHandler

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(facility = logging.handlers.SysLogHandler.LOG_DAEMON,

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

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try:

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if_nametoindex = ctypes.cdll.LoadLibrary(

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

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if_nametoindex = (ctypes.cdll.LoadLibrary

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

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.if_nametoindex)

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except (OSError, AttributeError):

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def if_nametoindex(interface):

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

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

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

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ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

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

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

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

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interface))

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

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ifreq[16:20])[0]

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return interface_index

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def copy_function(func):

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

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if sys.version_info.major == 2:

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return types.FunctionType(func.func_code,

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func.func_globals,

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func.func_name,

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func.func_defaults,

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func.func_closure)

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else:

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return types.FunctionType(func.__code__,

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func.__globals__,

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func.__name__,

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func.__defaults__,

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func.__closure__)

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

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def initlogger(level=logging.WARNING):

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"""init logger and add loglevel"""

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global syslogger

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syslogger = (logging.handlers.SysLogHandler(

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facility = logging.handlers.SysLogHandler.LOG_DAEMON,

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address = "/dev/log"))

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syslogger.setFormatter(logging.Formatter

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

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' %(message)s'))

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logger.addHandler(syslogger)

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if debug:

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console = logging.StreamHandler()

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

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' [%(process)d]:'

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' %(levelname)s:'

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' %(message)s'))

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logger.addHandler(console)

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console = logging.StreamHandler()

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

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' [%(process)d]:'

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' %(levelname)s:'

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' %(message)s'))

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logger.addHandler(console)

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logger.setLevel(level)

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class PGPError(Exception):

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

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class CryptoError(Exception):

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pass

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class PGPEngine(object):

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class Crypto(object):

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

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def __init__(self):

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self.gnupg = GnuPGInterface.GnuPG()

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

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self.gpg = "gpg"

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try:

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

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for line in output.splitlines():

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

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if name == "gpg":

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self.gpg = path

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break

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except OSError as e:

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if e.errno != errno.ENOENT:

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raise

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self.gnupgargs = ['--batch',

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'--homedir', self.tempdir,

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'--force-mdc',

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'--quiet',

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'--no-use-agent']

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self.gnupg = GnuPGInterface.GnuPG()

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self.gnupg.options.meta_interactive = False

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self.gnupg.options.homedir = self.tempdir

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

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'--quiet'])

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def __enter__(self):

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return self

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

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

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self._cleanup()

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return False

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def password_encode(self, password):

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

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

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

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if len(encoded) > 2048:

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

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

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

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

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return encoded

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

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def encrypt(self, data, password):

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passphrase = self.password_encode(password)

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with tempfile.NamedTemporaryFile(

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dir=self.tempdir) as passfile:

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passfile.write(passphrase)

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passfile.flush()

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

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'--passphrase-file',

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passfile.name]

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+ self.gnupgargs,

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stdin = subprocess.PIPE,

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stdout = subprocess.PIPE,

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stderr = subprocess.PIPE)

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

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if proc.returncode != 0:

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raise PGPError(err)

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

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with open(os.devnull) as devnull:

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try:

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

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

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attach_fhs={'stderr': devnull})

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

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f.write(data)

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

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ciphertext = f.read()

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proc.wait()

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except IOError as e:

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raise CryptoError(e)

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self.gnupg.passphrase = None

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return ciphertext

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def decrypt(self, data, password):

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passphrase = self.password_encode(password)

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with tempfile.NamedTemporaryFile(

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dir = self.tempdir) as passfile:

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passfile.write(passphrase)

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passfile.flush()

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

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'--passphrase-file',

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passfile.name]

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+ self.gnupgargs,

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stdin = subprocess.PIPE,

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stdout = subprocess.PIPE,

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stderr = subprocess.PIPE)

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

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if proc.returncode != 0:

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raise PGPError(err)

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

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with open(os.devnull) as devnull:

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try:

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

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

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attach_fhs={'stderr': devnull})

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

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f.write(data)

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

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decrypted_plaintext = f.read()

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proc.wait()

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except IOError as e:

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raise CryptoError(e)

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self.gnupg.passphrase = None

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return decrypted_plaintext

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# Pretend that we have an Avahi module

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class Avahi(object):

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

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

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

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

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PROTO_INET = 0 # avahi-common/address.h

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PROTO_INET6 = 1 # avahi-common/address.h

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DBUS_NAME = "org.freedesktop.Avahi"

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DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"

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DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"

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DBUS_PATH_SERVER = "/"

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def string_array_to_txt_array(self, t):

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

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

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ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h

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ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h

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ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h

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SERVER_INVALID = 0 # avahi-common/defs.h

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SERVER_REGISTERING = 1 # avahi-common/defs.h

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SERVER_RUNNING = 2 # avahi-common/defs.h

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SERVER_COLLISION = 3 # avahi-common/defs.h

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SERVER_FAILURE = 4 # avahi-common/defs.h

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avahi = Avahi()

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class AvahiError(Exception):

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

283

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self.value = value

284

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

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**kwargs)

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

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def __unicode__(self):

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return unicode(repr(self.value))

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

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

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port: integer; what port to announce

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TXT: list of strings; TXT record for the service

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

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server: D-Bus Server

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bus: dbus.SystemBus()

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"""

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def __init__(self,

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interface = avahi.IF_UNSPEC,

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name = None,

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servicetype = None,

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port = None,

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TXT = None,

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domain = "",

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host = "",

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max_renames = 32768,

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protocol = avahi.PROTO_UNSPEC,

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bus = None):

244

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

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

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

247

protocol = avahi.PROTO_UNSPEC, bus = None):

328

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self.interface = interface

329

249

self.name = name

330

250

self.type = servicetype

339

259

self.server = None

340

260

self.bus = bus

341

261

self.entry_group_state_changed_match = None

342

343

def rename(self, remove=True):

262

def rename(self):

344

263

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

345

264

if self.rename_count >= self.max_renames:

346

265

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

347

266

" after %i retries, exiting.",

348

267

self.rename_count)

349

268

raise AvahiServiceError("Too many renames")

350

self.name = str(

351

self.server.GetAlternativeServiceName(self.name))

352

self.rename_count += 1

269

self.name = unicode(self.server

270

.GetAlternativeServiceName(self.name))

353

271

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

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self.name)

355

if remove:

356

self.remove()

273

self.remove()

357

274

try:

358

275

self.add()

359

276

except dbus.exceptions.DBusException as error:

360

if (error.get_dbus_name()

361

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

362

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

363

return self.rename(remove=False)

364

else:

365

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

366

self.cleanup()

367

os._exit(1)

368

277

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

278

self.cleanup()

279

os._exit(1)

280

self.rename_count += 1

369

281

def remove(self):

370

282

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

371

283

if self.entry_group_state_changed_match is not None:

373

285

self.entry_group_state_changed_match = None

374

286

if self.group is not None:

375

287

self.group.Reset()

376

377

288

def add(self):

378

289

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

379

290

self.remove()

396

307

dbus.UInt16(self.port),

397

308

avahi.string_array_to_txt_array(self.TXT))

398

309

self.group.Commit()

399

400

310

def entry_group_state_changed(self, state, error):

401

311

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

402

312

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

408

318

self.rename()

409

319

elif state == avahi.ENTRY_GROUP_FAILURE:

410

320

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

411

str(error))

412

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

413

321

unicode(error))

322

raise AvahiGroupError("State changed: %s"

323

% unicode(error))

414

324

def cleanup(self):

415

325

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

416

326

if self.group is not None:

421

331

pass

422

332

self.group = None

423

333

self.remove()

424

425

334

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

426

335

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

427

336

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

428

bad_states = {

429

avahi.SERVER_INVALID: "Zeroconf server invalid",

430

avahi.SERVER_REGISTERING: None,

431

avahi.SERVER_COLLISION: "Zeroconf server name collision",

432

avahi.SERVER_FAILURE: "Zeroconf server failure",

433

}

337

bad_states = { avahi.SERVER_INVALID:

338

"Zeroconf server invalid",

339

avahi.SERVER_REGISTERING: None,

340

avahi.SERVER_COLLISION:

341

"Zeroconf server name collision",

342

avahi.SERVER_FAILURE:

343

"Zeroconf server failure" }

434

344

if state in bad_states:

435

345

if bad_states[state] is not None:

436

346

if error is None:

439

349

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

440

350

self.cleanup()

441

351

elif state == avahi.SERVER_RUNNING:

442

try:

443

self.add()

444

except dbus.exceptions.DBusException as error:

445

if (error.get_dbus_name()

446

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

447

logger.info("Local Zeroconf service name"

448

" collision.")

449

return self.rename(remove=False)

450

else:

451

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

452

self.cleanup()

453

os._exit(1)

352

self.add()

454

353

else:

455

354

if error is None:

456

355

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

457

356

else:

458

357

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

459

460

358

def activate(self):

461

359

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

462

360

if self.server is None:

466

364

follow_name_owner_changes=True),

467

365

avahi.DBUS_INTERFACE_SERVER)

468

366

self.server.connect_to_signal("StateChanged",

469

self.server_state_changed)

367

self.server_state_changed)

470

368

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

471

369

472

473

370

class AvahiServiceToSyslog(AvahiService):

474

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

371

def rename(self):

475

372

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

476

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

477

syslogger.setFormatter(logging.Formatter(

478

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

479

.format(self.name)))

373

ret = AvahiService.rename(self)

374

syslogger.setFormatter(logging.Formatter

375

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

376

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

377

% self.name))

480

378

return ret

481

379

482

# Pretend that we have a GnuTLS module

483

class GnuTLS(object):

484

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

485

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

486

487

_library = ctypes.cdll.LoadLibrary(

488

ctypes.util.find_library("gnutls"))

489

_need_version = b"3.3.0"

490

def __init__(self):

491

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

492

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

493

# happens.

494

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

495

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

496

.format(self._need_version))

497

498

# Unless otherwise indicated, the constants and types below are

499

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

500

501

# Constants

502

E_SUCCESS = 0

503

E_INTERRUPTED = -52

504

E_AGAIN = -28

505

CRT_OPENPGP = 2

506

CLIENT = 2

507

SHUT_RDWR = 0

508

CRD_CERTIFICATE = 1

509

E_NO_CERTIFICATE_FOUND = -49

510

OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h

511

512

# Types

513

class session_int(ctypes.Structure):

514

_fields_ = []

515

session_t = ctypes.POINTER(session_int)

516

class certificate_credentials_st(ctypes.Structure):

517

_fields_ = []

518

certificate_credentials_t = ctypes.POINTER(

519

certificate_credentials_st)

520

certificate_type_t = ctypes.c_int

521

class datum_t(ctypes.Structure):

522

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

523

('size', ctypes.c_uint)]

524

class openpgp_crt_int(ctypes.Structure):

525

_fields_ = []

526

openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)

527

openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h

528

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

529

credentials_type_t = ctypes.c_int

530

transport_ptr_t = ctypes.c_void_p

531

close_request_t = ctypes.c_int

532

533

# Exceptions

534

class Error(Exception):

535

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

536

# exception might be raised from within GnuTLS.__init__,

537

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

538

# global variable has happened.

539

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

540

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

541

# code is passed, convert it to a string with

542

# gnutls.strerror()

543

self.code = code

544

if message is None and code is not None:

545

message = GnuTLS.strerror(code)

546

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

547

message, *args)

548

549

class CertificateSecurityError(Error):

550

pass

551

552

# Classes

553

class Credentials(object):

554

def __init__(self):

555

self._c_object = gnutls.certificate_credentials_t()

556

gnutls.certificate_allocate_credentials(

557

ctypes.byref(self._c_object))

558

self.type = gnutls.CRD_CERTIFICATE

559

560

def __del__(self):

561

gnutls.certificate_free_credentials(self._c_object)

562

563

class ClientSession(object):

564

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

565

self._c_object = gnutls.session_t()

566

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

567

gnutls.set_default_priority(self._c_object)

568

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

569

gnutls.handshake_set_private_extensions(self._c_object,

570

True)

571

self.socket = socket

572

if credentials is None:

573

credentials = gnutls.Credentials()

574

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

575

ctypes.cast(credentials._c_object,

576

ctypes.c_void_p))

577

self.credentials = credentials

578

579

def __del__(self):

580

gnutls.deinit(self._c_object)

581

582

def handshake(self):

583

return gnutls.handshake(self._c_object)

584

585

def send(self, data):

586

data = bytes(data)

587

data_len = len(data)

588

while data_len > 0:

589

data_len -= gnutls.record_send(self._c_object,

590

data[-data_len:],

591

data_len)

592

593

def bye(self):

594

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

595

596

# Error handling functions

597

def _error_code(result):

598

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

599

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

600

if result >= 0:

601

return result

602

if result == gnutls.E_NO_CERTIFICATE_FOUND:

603

raise gnutls.CertificateSecurityError(code = result)

604

raise gnutls.Error(code = result)

605

606

def _retry_on_error(result, func, arguments):

607

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

608

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

609

while result < 0:

610

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

611

return _error_code(result)

612

result = func(*arguments)

613

return result

614

615

# Unless otherwise indicated, the function declarations below are

616

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

617

618

# Functions

619

priority_set_direct = _library.gnutls_priority_set_direct

620

priority_set_direct.argtypes = [session_t, ctypes.c_char_p,

621

ctypes.POINTER(ctypes.c_char_p)]

622

priority_set_direct.restype = _error_code

623

624

init = _library.gnutls_init

625

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

626

init.restype = _error_code

627

628

set_default_priority = _library.gnutls_set_default_priority

629

set_default_priority.argtypes = [session_t]

630

set_default_priority.restype = _error_code

631

632

record_send = _library.gnutls_record_send

633

record_send.argtypes = [session_t, ctypes.c_void_p,

634

ctypes.c_size_t]

635

record_send.restype = ctypes.c_ssize_t

636

record_send.errcheck = _retry_on_error

637

638

certificate_allocate_credentials = (

639

_library.gnutls_certificate_allocate_credentials)

640

certificate_allocate_credentials.argtypes = [

641

ctypes.POINTER(certificate_credentials_t)]

642

certificate_allocate_credentials.restype = _error_code

643

644

certificate_free_credentials = (

645

_library.gnutls_certificate_free_credentials)

646

certificate_free_credentials.argtypes = [certificate_credentials_t]

647

certificate_free_credentials.restype = None

648

649

handshake_set_private_extensions = (

650

_library.gnutls_handshake_set_private_extensions)

651

handshake_set_private_extensions.argtypes = [session_t,

652

ctypes.c_int]

653

handshake_set_private_extensions.restype = None

654

655

credentials_set = _library.gnutls_credentials_set

656

credentials_set.argtypes = [session_t, credentials_type_t,

657

ctypes.c_void_p]

658

credentials_set.restype = _error_code

659

660

strerror = _library.gnutls_strerror

661

strerror.argtypes = [ctypes.c_int]

662

strerror.restype = ctypes.c_char_p

663

664

certificate_type_get = _library.gnutls_certificate_type_get

665

certificate_type_get.argtypes = [session_t]

666

certificate_type_get.restype = _error_code

667

668

certificate_get_peers = _library.gnutls_certificate_get_peers

669

certificate_get_peers.argtypes = [session_t,

670

ctypes.POINTER(ctypes.c_uint)]

671

certificate_get_peers.restype = ctypes.POINTER(datum_t)

672

673

global_set_log_level = _library.gnutls_global_set_log_level

674

global_set_log_level.argtypes = [ctypes.c_int]

675

global_set_log_level.restype = None

676

677

global_set_log_function = _library.gnutls_global_set_log_function

678

global_set_log_function.argtypes = [log_func]

679

global_set_log_function.restype = None

680

681

deinit = _library.gnutls_deinit

682

deinit.argtypes = [session_t]

683

deinit.restype = None

684

685

handshake = _library.gnutls_handshake

686

handshake.argtypes = [session_t]

687

handshake.restype = _error_code

688

handshake.errcheck = _retry_on_error

689

690

transport_set_ptr = _library.gnutls_transport_set_ptr

691

transport_set_ptr.argtypes = [session_t, transport_ptr_t]

692

transport_set_ptr.restype = None

693

694

bye = _library.gnutls_bye

695

bye.argtypes = [session_t, close_request_t]

696

bye.restype = _error_code

697

bye.errcheck = _retry_on_error

698

699

check_version = _library.gnutls_check_version

700

check_version.argtypes = [ctypes.c_char_p]

701

check_version.restype = ctypes.c_char_p

702

703

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

704

705

openpgp_crt_init = _library.gnutls_openpgp_crt_init

706

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

707

openpgp_crt_init.restype = _error_code

708

709

openpgp_crt_import = _library.gnutls_openpgp_crt_import

710

openpgp_crt_import.argtypes = [openpgp_crt_t,

711

ctypes.POINTER(datum_t),

712

openpgp_crt_fmt_t]

713

openpgp_crt_import.restype = _error_code

714

715

openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self

716

openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,

717

ctypes.POINTER(ctypes.c_uint)]

718

openpgp_crt_verify_self.restype = _error_code

719

720

openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit

721

openpgp_crt_deinit.argtypes = [openpgp_crt_t]

722

openpgp_crt_deinit.restype = None

723

724

openpgp_crt_get_fingerprint = (

725

_library.gnutls_openpgp_crt_get_fingerprint)

726

openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,

727

ctypes.c_void_p,

728

ctypes.POINTER(

729

ctypes.c_size_t)]

730

openpgp_crt_get_fingerprint.restype = _error_code

731

732

# Remove non-public functions

733

del _error_code, _retry_on_error

734

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

735

gnutls = GnuTLS()

736

737

def call_pipe(connection, # : multiprocessing.Connection

738

func, *args, **kwargs):

739

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

740

741

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

742

return value on the provided multiprocessing.Connection.

743

"""

744

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

745

connection.close()

746

380

def _timedelta_to_milliseconds(td):

381

"Convert a datetime.timedelta() to milliseconds"

382

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

383

+ (td.seconds * 1000)

384

+ (td.microseconds // 1000))

385

747

386

class Client(object):

748

387

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

749

388

750

389

Attributes:

751

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

390

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

752

391

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

753

392

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

754

393

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

755

394

to see if the client lives.

756

395

'None' if no process is running.

757

checker_callback_tag: a GLib event source tag, or None

396

checker_callback_tag: a gobject event source tag, or None

758

397

checker_command: string; External command which is run to check

759

398

if client lives. %() expansions are done at

760

399

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

761

400

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

762

checker_initiator_tag: a GLib event source tag, or None

401

checker_initiator_tag: a gobject event source tag, or None

763

402

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

764

403

client_structure: Object describing what attributes a client has

765

404

and is used for storing the client at exit

766

405

current_checker_command: string; current running checker_command

767

disable_initiator_tag: a GLib event source tag, or None

406

disable_initiator_tag: a gobject event source tag, or None

768

407

enabled: bool()

769

408

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

770

409

uniquely identify the client

772

411

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

773

412

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

774

413

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

414

775

415

last_checker_status: integer between 0 and 255 reflecting exit

776

416

status of last checker. -1 reflects crashed

777

checker, -2 means no checker completed yet.

778

last_checker_signal: The signal which killed the last checker, if

779

last_checker_status is -1

417

checker, or None.

780

418

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

781

419

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

782

420

D-Bus identifiers

783

421

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

784

422

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

785

423

until this client is disabled

786

extended_timeout: extra long timeout when secret has been sent

424

extended_timeout: extra long timeout when password has been sent

787

425

runtime_expansions: Allowed attributes for runtime expansion.

788

426

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

789

427

disabled, or None

790

server_settings: The server_settings dict from main()

791

428

"""

792

429

793

430

runtime_expansions = ("approval_delay", "approval_duration",

794

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

795

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

796

"last_approval_request", "last_checked_ok",

431

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

432

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

797

433

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

798

client_defaults = {

799

"timeout": "PT5M",

800

"extended_timeout": "PT15M",

801

"interval": "PT2M",

802

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

803

"host": "",

804

"approval_delay": "PT0S",

805

"approval_duration": "PT1S",

806

"approved_by_default": "True",

807

"enabled": "True",

808

}

809

810

@staticmethod

811

def config_parser(config):

812

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

813

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

814

with exceptions for any special settings as defined above.

815

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

816

value given the same arguments.

817

"""

818

settings = {}

819

for client_name in config.sections():

820

section = dict(config.items(client_name))

821

client = settings[client_name] = {}

822

823

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

824

# Reformat values from string types to Python types

825

client["approved_by_default"] = config.getboolean(

826

client_name, "approved_by_default")

827

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

828

"enabled")

829

830

# Uppercase and remove spaces from fingerprint for later

831

# comparison purposes with return value from the

832

# fingerprint() function

833

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

834

.replace(" ", ""))

835

if "secret" in section:

836

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

837

.encode("utf-8"),

838

"base64")

839

elif "secfile" in section:

840

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

841

(section["secfile"])),

842

"rb") as secfile:

843

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

844

else:

845

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

846

.format(section))

847

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

848

client["extended_timeout"] = string_to_delta(

849

section["extended_timeout"])

850

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

851

client["approval_delay"] = string_to_delta(

852

section["approval_delay"])

853

client["approval_duration"] = string_to_delta(

854

section["approval_duration"])

855

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

856

client["last_approval_request"] = None

857

client["last_checked_ok"] = None

858

client["last_checker_status"] = -2

859

860

return settings

861

862

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

434

435

def timeout_milliseconds(self):

436

"Return the 'timeout' attribute in milliseconds"

437

return _timedelta_to_milliseconds(self.timeout)

438

439

def extended_timeout_milliseconds(self):

440

"Return the 'extended_timeout' attribute in milliseconds"

441

return _timedelta_to_milliseconds(self.extended_timeout)

442

443

def interval_milliseconds(self):

444

"Return the 'interval' attribute in milliseconds"

445

return _timedelta_to_milliseconds(self.interval)

446

447

def approval_delay_milliseconds(self):

448

return _timedelta_to_milliseconds(self.approval_delay)

449

450

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

451

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

452

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

453

attribute."""

863

454

self.name = name

864

if server_settings is None:

865

server_settings = {}

866

self.server_settings = server_settings

867

# adding all client settings

868

for setting, value in settings.items():

869

setattr(self, setting, value)

870

871

if self.enabled:

872

if not hasattr(self, "last_enabled"):

873

self.last_enabled = datetime.datetime.utcnow()

874

if not hasattr(self, "expires"):

875

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

876

+ self.timeout)

877

else:

878

self.last_enabled = None

879

self.expires = None

880

455

if config is None:

456

config = {}

881

457

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

458

# Uppercase and remove spaces from fingerprint for later

459

# comparison purposes with return value from the fingerprint()

460

# function

461

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

462

.replace(" ", ""))

882

463

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

883

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

884

datetime.datetime.utcnow())

885

886

# attributes specific for this server instance

464

if "secret" in config:

465

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

466

elif "secfile" in config:

467

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

468

(config["secfile"])),

469

"rb") as secfile:

470

self.secret = secfile.read()

471

else:

472

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

473

% self.name)

474

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

475

self.created = datetime.datetime.utcnow()

476

self.enabled = 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"])

887

488

self.checker = None

888

489

self.checker_initiator_tag = None

889

490

self.disable_initiator_tag = None

491

if self.enabled:

492

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

493

else:

494

self.expires = None

890

495

self.checker_callback_tag = None

496

self.checker_command = config["checker"]

891

497

self.current_checker_command = None

892

self.approved = None

498

self._approved = None

499

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

500

True)

893

501

self.approvals_pending = 0

894

self.changedstate = multiprocessing_manager.Condition(

895

multiprocessing_manager.Lock())

896

self.client_structure = [attr

897

for attr in self.__dict__.keys()

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()

898

511

if not attr.startswith("_")]

899

512

self.client_structure.append("client_structure")

900

513

901

for name, t in inspect.getmembers(

902

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

514

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

515

lambda obj:

516

isinstance(obj,

517

property)):

903

518

if not name.startswith("_"):

904

519

self.client_structure.append(name)

905

520

913

528

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

914

529

# Already enabled

915

530

return

531

self.send_changedstate()

916

532

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

917

533

self.enabled = True

918

534

self.last_enabled = datetime.datetime.utcnow()

919

535

self.init_checker()

920

self.send_changedstate()

921

536

922

537

def disable(self, quiet=True):

923

538

"""Disable this client."""

924

539

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

925

540

return False

926

541

if not quiet:

542

self.send_changedstate()

543

if not quiet:

927

544

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

928

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

929

GLib.source_remove(self.disable_initiator_tag)

545

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

546

gobject.source_remove(self.disable_initiator_tag)

930

547

self.disable_initiator_tag = None

931

548

self.expires = None

932

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

933

GLib.source_remove(self.checker_initiator_tag)

549

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

550

gobject.source_remove(self.checker_initiator_tag)

934

551

self.checker_initiator_tag = None

935

552

self.stop_checker()

936

553

self.enabled = False

937

if not quiet:

938

self.send_changedstate()

939

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

554

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

940

555

return False

941

556

942

557

def __del__(self):

945

560

def init_checker(self):

946

561

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

947

562

# and every interval from then on.

948

if self.checker_initiator_tag is not None:

949

GLib.source_remove(self.checker_initiator_tag)

950

self.checker_initiator_tag = GLib.timeout_add(

951

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

952

self.start_checker)

563

self.checker_initiator_tag = (gobject.timeout_add

564

(self.interval_milliseconds(),

565

self.start_checker))

953

566

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

954

if self.disable_initiator_tag is not None:

955

GLib.source_remove(self.disable_initiator_tag)

956

self.disable_initiator_tag = GLib.timeout_add(

957

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

567

self.disable_initiator_tag = (gobject.timeout_add

568

(self.timeout_milliseconds(),

569

self.disable))

958

570

# Also start a new checker *right now*.

959

571

self.start_checker()

960

572

961

def checker_callback(self, source, condition, connection,

962

command):

573

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

963

574

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

964

575

self.checker_callback_tag = None

965

576

self.checker = None

966

# Read return code from connection (see call_pipe)

967

returncode = connection.recv()

968

connection.close()

969

970

if returncode >= 0:

971

self.last_checker_status = returncode

972

self.last_checker_signal = None

577

if os.WIFEXITED(condition):

578

self.last_checker_status = os.WEXITSTATUS(condition)

973

579

if self.last_checker_status == 0:

974

580

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

975

581

vars(self))

976

582

self.checked_ok()

977

583

else:

978

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

584

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

585

vars(self))

979

586

else:

980

587

self.last_checker_status = -1

981

self.last_checker_signal = -returncode

982

588

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

983

589

vars(self))

984

return False

985

986

def checked_ok(self):

987

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

988

self.last_checked_ok = datetime.datetime.utcnow()

989

self.last_checker_status = 0

990

self.last_checker_signal = None

991

self.bump_timeout()

992

993

def bump_timeout(self, timeout=None):

994

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

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

"""

995

597

if timeout is None:

996

598

timeout = self.timeout

599

self.last_checked_ok = datetime.datetime.utcnow()

997

600

if self.disable_initiator_tag is not None:

998

GLib.source_remove(self.disable_initiator_tag)

999

self.disable_initiator_tag = None

601

gobject.source_remove(self.disable_initiator_tag)

1000

602

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

1001

self.disable_initiator_tag = GLib.timeout_add(

1002

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

603

self.disable_initiator_tag = (gobject.timeout_add

604

(_timedelta_to_milliseconds

605

(timeout), self.disable))

1003

606

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

1004

607

1005

608

def need_approval(self):

1011

614

If a checker already exists, leave it running and do

1012

615

nothing."""

1013

616

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

1014

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

1015

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

1016

# would inevitably timeout, since no checker would get a

1017

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

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

1018

621

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

1019

622

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

1020

623

# should be.

1021

624

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

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)

1026

638

# Start a new checker if needed

1027

639

if self.checker is None:

1028

# Escape attributes for the shell

1029

escaped_attrs = {

1030

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

1031

for attr in self.runtime_expansions }

1032

640

try:

1033

command = self.checker_command % escaped_attrs

1034

except TypeError as error:

1035

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

1036

self.checker_command,

1037

exc_info=error)

1038

return True # Try again later

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

1039

659

self.current_checker_command = command

1040

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

1041

self.name)

1042

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

1043

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

1044

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

1045

# always replaced by /dev/null.)

1046

# The exception is when not debugging but nevertheless

1047

# running in the foreground; use the previously

1048

# created wnull.

1049

popen_args = { "close_fds": True,

1050

"shell": True,

1051

"cwd": "/" }

1052

if (not self.server_settings["debug"]

1053

and self.server_settings["foreground"]):

1054

popen_args.update({"stdout": wnull,

1055

"stderr": wnull })

1056

pipe = multiprocessing.Pipe(duplex = False)

1057

self.checker = multiprocessing.Process(

1058

target = call_pipe,

1059

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

1060

kwargs = popen_args)

1061

self.checker.start()

1062

self.checker_callback_tag = GLib.io_add_watch(

1063

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

1064

self.checker_callback, pipe[0], command)

1065

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

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

1066

684

return True

1067

685

1068

686

def stop_checker(self):

1069

687

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

1070

688

if self.checker_callback_tag:

1071

GLib.source_remove(self.checker_callback_tag)

689

gobject.source_remove(self.checker_callback_tag)

1072

690

self.checker_callback_tag = None

1073

691

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

1074

692

return

1075

693

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

1076

self.checker.terminate()

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

1077

702

self.checker = None

1078

703

1079

704

1080

def dbus_service_property(dbus_interface,

1081

signature="v",

1082

access="readwrite",

1083

byte_arrays=False):

705

def dbus_service_property(dbus_interface, signature="v",

706

access="readwrite", byte_arrays=False):

1084

707

"""Decorators for marking methods of a DBusObjectWithProperties to

1085

708

become properties on the D-Bus.

1086

709

1095

718

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

1096

719

if byte_arrays and signature != "ay":

1097

720

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

1098

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

1099

721

" signature %r" % signature)

1100

722

def decorator(func):

1101

723

func._dbus_is_property = True

1102

724

func._dbus_interface = dbus_interface

1107

729

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

1108

730

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

1109

731

return func

1110

1111

return decorator

1112

1113

1114

def dbus_interface_annotations(dbus_interface):

1115

"""Decorator for marking functions returning interface annotations

1116

1117

Usage:

1118

1119

@dbus_interface_annotations("org.example.Interface")

1120

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

1121

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

1122

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

1123

"false"}

1124

"""

1125

1126

def decorator(func):

1127

func._dbus_is_interface = True

1128

func._dbus_interface = dbus_interface

1129

func._dbus_name = dbus_interface

1130

return func

1131

1132

return decorator

1133

1134

1135

def dbus_annotations(annotations):

1136

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

1137

Usage:

1138

1139

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

1140

"org.freedesktop.DBus.Property."

1141

"EmitsChangedSignal": "false"})

1142

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

1143

access="r")

1144

def Property_dbus_property(self):

1145

return dbus.Boolean(False)

1146

1147

See also the DBusObjectWithAnnotations class.

1148

"""

1149

1150

def decorator(func):

1151

func._dbus_annotations = annotations

1152

return func

1153

1154

732

return decorator

1155

733

1156

734

1157

735

class DBusPropertyException(dbus.exceptions.DBusException):

1158

736

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

1159

737

"""

1160

pass

738

def __unicode__(self):

739

return unicode(str(self))

1161

740

1162

741

1163

742

class DBusPropertyAccessException(DBusPropertyException):

1172

751

pass

1173

752

1174

753

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):

754

class DBusObjectWithProperties(dbus.service.Object):

1265

755

"""A D-Bus object with properties.

1266

756

1267

757

Classes inheriting from this can use the dbus_service_property

1269

759

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

1270

760

"""

1271

761

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

1272

774

def _get_dbus_property(self, interface_name, property_name):

1273

775

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

1274

776

property with the specified name and interface.

1275

777

"""

1276

for cls in self.__class__.__mro__:

1277

for name, value in inspect.getmembers(

1278

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

778

for cls in self.__class__.__mro__:

779

for name, value in (inspect.getmembers

780

(cls, self._is_dbus_property)):

1279

781

if (value._dbus_name == property_name

1280

782

and value._dbus_interface == interface_name):

1281

783

return value.__get__(self)

1282

784

1283

785

# No such property

1284

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

1285

self.dbus_object_path, interface_name, property_name))

1286

1287

@classmethod

1288

def _get_all_interface_names(cls):

1289

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

1290

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

1291

"_dbus_interface", None)

1292

for x in (inspect.getmro(cls))

1293

for attr in dir(x))

1294

if name is not None)

1295

1296

@dbus.service.method(dbus.PROPERTIES_IFACE,

1297

in_signature="ss",

786

raise DBusPropertyNotFound(self.dbus_object_path + ":"

787

+ interface_name + "."

788

+ property_name)

789

790

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

1298

791

out_signature="v")

1299

792

def Get(self, interface_name, property_name):

1300

793

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

1318

811

# The byte_arrays option is not supported yet on

1319

812

# signatures other than "ay".

1320

813

if prop._dbus_signature != "ay":

1321

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

1322

"'ay' signature {!r}"

1323

.format(prop._dbus_signature))

1324

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

1325

for byte in value))

814

raise ValueError

815

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

816

for byte in value))

1326

817

prop(value)

1327

818

1328

@dbus.service.method(dbus.PROPERTIES_IFACE,

1329

in_signature="s",

819

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

1330

820

out_signature="a{sv}")

1331

821

def GetAll(self, interface_name):

1332

822

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

1335

825

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

1336

826

"""

1337

827

properties = {}

1338

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

828

for name, prop in self._get_all_dbus_properties():

1339

829

if (interface_name

1340

830

and interface_name != prop._dbus_interface):

1341

831

# Interface non-empty but did not match

1347

837

if not hasattr(value, "variant_level"):

1348

838

properties[name] = value

1349

839

continue

1350

properties[name] = type(value)(

1351

value, variant_level = value.variant_level + 1)

840

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

841

value.variant_level+1)

1352

842

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

1353

843

1354

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

1355

def PropertiesChanged(self, interface_name, changed_properties,

1356

invalidated_properties):

1357

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

1358

standard.

1359

"""

1360

pass

1361

1362

844

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1363

845

out_signature="s",

1364

846

path_keyword='object_path',

1365

847

connection_keyword='connection')

1366

848

def Introspect(self, object_path, connection):

1367

"""Overloading of standard D-Bus method.

1368

1369

Inserts property tags and interface annotation tags.

849

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

1370

850

"""

1371

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1372

object_path,

1373

connection)

851

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

852

connection)

1374

853

try:

1375

854

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

1376

1377

855

def make_tag(document, name, prop):

1378

856

e = document.createElement("property")

1379

857

e.setAttribute("name", name)

1380

858

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

1381

859

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

1382

860

return e

1383

1384

861

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

1385

# Add property tags

1386

862

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

1387

863

for name, prop

1388

in self._get_all_dbus_things("property")

864

in self._get_all_dbus_properties()

1389

865

if prop._dbus_interface

1390

866

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

1391

867

if_tag.appendChild(tag)

1392

# Add annotation tags for properties

1393

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

1394

annots = dict()

1395

for name, prop in self._get_all_dbus_things(

1396

"property"):

1397

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

1398

and prop._dbus_interface

1399

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

1400

annots.update(getattr(

1401

prop, "_dbus_annotations", {}))

1402

for name, value in annots.items():

1403

ann_tag = document.createElement(

1404

"annotation")

1405

ann_tag.setAttribute("name", name)

1406

ann_tag.setAttribute("value", value)

1407

tag.appendChild(ann_tag)

1408

868

# Add the names to the return values for the

1409

869

# "org.freedesktop.DBus.Properties" methods

1410

870

if (if_tag.getAttribute("name")

1425

885

except (AttributeError, xml.dom.DOMException,

1426

886

xml.parsers.expat.ExpatError) as error:

1427

887

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

1428

exc_info=error)

1429

return xmlstring

1430

1431

try:

1432

dbus.OBJECT_MANAGER_IFACE

1433

except AttributeError:

1434

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

1435

1436

class DBusObjectWithObjectManager(DBusObjectWithAnnotations):

1437

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

1438

1439

Classes inheriting from this exposes the standard

1440

GetManagedObjects call and the InterfacesAdded and

1441

InterfacesRemoved signals on the standard

1442

"org.freedesktop.DBus.ObjectManager" interface.

1443

1444

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

1445

manually.

1446

"""

1447

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

1448

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

1449

def GetManagedObjects(self):

1450

"""This function must be overridden"""

1451

raise NotImplementedError()

1452

1453

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,

1454

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

1455

def InterfacesAdded(self, object_path, interfaces_and_properties):

1456

pass

1457

1458

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

1459

def InterfacesRemoved(self, object_path, interfaces):

1460

pass

1461

1462

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1463

out_signature = "s",

1464

path_keyword = 'object_path',

1465

connection_keyword = 'connection')

1466

def Introspect(self, object_path, connection):

1467

"""Overloading of standard D-Bus method.

1468

1469

Override return argument name of GetManagedObjects to be

1470

"objpath_interfaces_and_properties"

1471

"""

1472

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1473

object_path,

1474

connection)

1475

try:

1476

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

1477

1478

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

1479

# Fix argument name for the GetManagedObjects method

1480

if (if_tag.getAttribute("name")

1481

== dbus.OBJECT_MANAGER_IFACE):

1482

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

1483

if (cn.getAttribute("name")

1484

== "GetManagedObjects"):

1485

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

1486

if (arg.getAttribute("direction")

1487

== "out"):

1488

arg.setAttribute(

1489

"name",

1490

"objpath_interfaces"

1491

"_and_properties")

1492

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

1493

document.unlink()

1494

except (AttributeError, xml.dom.DOMException,

1495

xml.parsers.expat.ExpatError) as error:

1496

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

1497

exc_info = error)

1498

return xmlstring

1499

1500

def datetime_to_dbus(dt, variant_level=0):

888

error)

889

return xmlstring

890

891

892

def datetime_to_dbus (dt, variant_level=0):

1501

893

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

1502

894

if dt is None:

1503

895

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

1504

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

1505

1506

1507

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1508

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

1509

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

1510

interface names according to the "alt_interface_names" mapping.

1511

Usage:

1512

1513

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

1514

"net.example.AlternateInterface"})

1515

class SampleDBusObject(dbus.service.Object):

1516

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

1517

def SampleDBusMethod():

1518

pass

1519

1520

The above "SampleDBusMethod" on "SampleDBusObject" will be

1521

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

1522

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

1523

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

1524

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

1525

1526

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

1527

(from DBusObjectWithProperties) and interfaces (from the

1528

dbus_interface_annotations decorator).

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.

1529

904

"""

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):

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):

1538

912

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

1539

913

# with the wrong interface name

1540

914

if (not hasattr(attribute, "_dbus_interface")

1541

or not attribute._dbus_interface.startswith(

1542

orig_interface_name)):

915

or not attribute._dbus_interface

916

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

1543

917

continue

1544

918

# Create an alternate D-Bus interface name based on

1545

919

# the current name

1546

alt_interface = attribute._dbus_interface.replace(

1547

orig_interface_name, alt_interface_name)

1548

interface_names.add(alt_interface)

920

alt_interface = (attribute._dbus_interface

921

.replace("se.recompile.Mandos",

922

"se.bsnet.fukt.Mandos"))

1549

923

# Is this a D-Bus signal?

1550

924

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

1551

# Extract the original non-method undecorated

1552

# function by black magic

1553

if sys.version_info.major == 2:

1554

nonmethod_func = (dict(

925

# Extract the original non-method function by

926

# black magic

927

nonmethod_func = (dict(

1555

928

zip(attribute.func_code.co_freevars,

1556

attribute.__closure__))

1557

["func"].cell_contents)

1558

else:

1559

nonmethod_func = (dict(

1560

zip(attribute.__code__.co_freevars,

1561

attribute.__closure__))

1562

["func"].cell_contents)

929

attribute.__closure__))["func"]

930

.cell_contents)

1563

931

# Create a new, but exactly alike, function

1564

932

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

1565

933

# with the alternate D-Bus interface name

1566

new_function = copy_function(nonmethod_func)

1567

new_function = (dbus.service.signal(

1568

alt_interface,

1569

attribute._dbus_signature)(new_function))

1570

# Copy annotations, if any

1571

try:

1572

new_function._dbus_annotations = dict(

1573

attribute._dbus_annotations)

1574

except AttributeError:

1575

pass

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)))

1576

943

# Define a creator of a function to call both the

1577

# original and alternate functions, so both the

1578

# original and alternate signals gets sent when

1579

# the function is called

944

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

945

# signals gets sent when the function is called

1580

946

def fixscope(func1, func2):

1581

947

"""This function is a scope container to pass

1582

948

func1 and func2 to the "call_both" function

1583

949

outside of its arguments"""

1584

1585

@functools.wraps(func2)

1586

950

def call_both(*args, **kwargs):

1587

951

"""This function will emit two D-Bus

1588

952

signals by calling func1 and func2"""

1589

953

func1(*args, **kwargs)

1590

954

func2(*args, **kwargs)

1591

# Make wrapper function look like a D-Bus signal

1592

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

1593

if name.startswith("_dbus_"):

1594

setattr(call_both, name, attr)

1595

1596

955

return call_both

1597

956

# Create the "call_both" function and add it to

1598

957

# the class

1599

attr[attrname] = fixscope(attribute, new_function)

958

attr[attrname] = fixscope(attribute,

959

new_function)

1600

960

# Is this a D-Bus method?

1601

961

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

1602

962

# Create a new, but exactly alike, function

1603

963

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

1604

964

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

1605

965

# to the class.

1606

attr[attrname] = (

1607

dbus.service.method(

1608

alt_interface,

1609

attribute._dbus_in_signature,

1610

attribute._dbus_out_signature)

1611

(copy_function(attribute)))

1612

# Copy annotations, if any

1613

try:

1614

attr[attrname]._dbus_annotations = dict(

1615

attribute._dbus_annotations)

1616

except AttributeError:

1617

pass

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)))

1618

976

# Is this a D-Bus property?

1619

977

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

1620

978

# Create a new, but exactly alike, function

1621

979

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

1622

980

# property with the alternate D-Bus interface

1623

981

# name. Add it to the class.

1624

attr[attrname] = (dbus_service_property(

1625

alt_interface, attribute._dbus_signature,

1626

attribute._dbus_access,

1627

attribute._dbus_get_args_options

1628

["byte_arrays"])

1629

(copy_function(attribute)))

1630

# Copy annotations, if any

1631

try:

1632

attr[attrname]._dbus_annotations = dict(

1633

attribute._dbus_annotations)

1634

except AttributeError:

1635

pass

1636

# Is this a D-Bus interface?

1637

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

1638

# Create a new, but exactly alike, function

1639

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

1640

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

1641

# to the class.

1642

attr[attrname] = (

1643

dbus_interface_annotations(alt_interface)

1644

(copy_function(attribute)))

1645

if deprecate:

1646

# Deprecate all alternate interfaces

1647

iname="_AlternateDBusNames_interface_annotation{}"

1648

for interface_name in interface_names:

1649

1650

@dbus_interface_annotations(interface_name)

1651

def func(self):

1652

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

1653

"true" }

1654

# Find an unused name

1655

for aname in (iname.format(i)

1656

for i in itertools.count()):

1657

if aname not in attr:

1658

attr[aname] = func

1659

break

1660

if interface_names:

1661

# Replace the class with a new subclass of it with

1662

# methods, signals, etc. as created above.

1663

if sys.version_info.major == 2:

1664

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

1665

(cls, ), attr)

1666

else:

1667

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

1668

(cls, ), attr)

1669

return cls

1670

1671

return wrapper

1672

1673

1674

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

1675

"se.bsnet.fukt.Mandos"})

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

1676

998

class ClientDBus(Client, DBusObjectWithProperties):

1677

999

"""A Client class using D-Bus

1678

1000

1682

1004

"""

1683

1005

1684

1006

runtime_expansions = (Client.runtime_expansions

1685

+ ("dbus_object_path", ))

1686

1687

_interface = "se.recompile.Mandos.Client"

1007

+ ("dbus_object_path",))

1688

1008

1689

1009

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

1690

1010

1691

1011

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

1692

1012

self.bus = bus

1693

1013

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

1014

1015

self._approvals_pending = 0

1694

1016

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

1695

1017

# the D-Bus

1696

client_object_name = str(self.name).translate(

1018

client_object_name = unicode(self.name).translate(

1697

1019

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

1698

1020

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

1699

self.dbus_object_path = dbus.ObjectPath(

1700

"/clients/" + client_object_name)

1021

self.dbus_object_path = (dbus.ObjectPath

1022

("/clients/" + client_object_name))

1701

1023

DBusObjectWithProperties.__init__(self, self.bus,

1702

1024

self.dbus_object_path)

1703

1704

def notifychangeproperty(transform_func, dbus_name,

1705

type_func=lambda x: x,

1706

variant_level=1,

1707

invalidate_only=False,

1708

_interface=_interface):

1025

1026

def notifychangeproperty(transform_func,

1027

dbus_name, type_func=lambda x: x,

1028

variant_level=1):

1709

1029

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

1710

1030

its changes to DBus.

1711

1031

1716

1036

to the D-Bus. Default: no transform

1717

1037

variant_level: D-Bus variant level. Default: 1

1718

1038

"""

1719

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

1720

1039

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

1721

1040

def setter(self, value):

1722

1041

if hasattr(self, "dbus_object_path"):

1723

1042

if (not hasattr(self, attrname) or

1724

1043

type_func(getattr(self, attrname, None))

1725

1044

!= type_func(value)):

1726

if invalidate_only:

1727

self.PropertiesChanged(

1728

_interface, dbus.Dictionary(),

1729

dbus.Array((dbus_name, )))

1730

else:

1731

dbus_value = transform_func(

1732

type_func(value),

1733

variant_level = variant_level)

1734

self.PropertyChanged(dbus.String(dbus_name),

1735

dbus_value)

1736

self.PropertiesChanged(

1737

_interface,

1738

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

1739

dbus_value }),

1740

dbus.Array())

1045

dbus_value = transform_func(type_func(value),

1046

variant_level

1047

=variant_level)

1048

self.PropertyChanged(dbus.String(dbus_name),

1049

dbus_value)

1741

1050

setattr(self, attrname, value)

1742

1051

1743

1052

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

1744

1053

1054

1745

1055

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1746

1056

approvals_pending = notifychangeproperty(dbus.Boolean,

1747

1057

"ApprovalPending",

1749

1059

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

1750

1060

last_enabled = notifychangeproperty(datetime_to_dbus,

1751

1061

"LastEnabled")

1752

checker = notifychangeproperty(

1753

dbus.Boolean, "CheckerRunning",

1754

type_func = lambda checker: checker is not None)

1062

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

1063

type_func = lambda checker:

1064

checker is not None)

1755

1065

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1756

1066

"LastCheckedOK")

1757

last_checker_status = notifychangeproperty(dbus.Int16,

1758

"LastCheckerStatus")

1759

1067

last_approval_request = notifychangeproperty(

1760

1068

datetime_to_dbus, "LastApprovalRequest")

1761

1069

approved_by_default = notifychangeproperty(dbus.Boolean,

1762

1070

"ApprovedByDefault")

1763

approval_delay = notifychangeproperty(

1764

dbus.UInt64, "ApprovalDelay",

1765

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

1071

approval_delay = notifychangeproperty(dbus.UInt16,

1072

"ApprovalDelay",

1073

type_func =

1074

_timedelta_to_milliseconds)

1766

1075

approval_duration = notifychangeproperty(

1767

dbus.UInt64, "ApprovalDuration",

1768

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

1076

dbus.UInt16, "ApprovalDuration",

1077

type_func = _timedelta_to_milliseconds)

1769

1078

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

1770

timeout = notifychangeproperty(

1771

dbus.UInt64, "Timeout",

1772

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

1079

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

1080

type_func =

1081

_timedelta_to_milliseconds)

1773

1082

extended_timeout = notifychangeproperty(

1774

dbus.UInt64, "ExtendedTimeout",

1775

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

1776

interval = notifychangeproperty(

1777

dbus.UInt64, "Interval",

1778

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

1083

dbus.UInt16, "ExtendedTimeout",

1084

type_func = _timedelta_to_milliseconds)

1085

interval = notifychangeproperty(dbus.UInt16,

1086

"Interval",

1087

type_func =

1088

_timedelta_to_milliseconds)

1779

1089

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

1780

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

1781

invalidate_only=True)

1782

1090

1783

1091

del notifychangeproperty

1784

1092

1791

1099

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

1792

1100

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

1793

1101

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:

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)

1801

1108

# Emit D-Bus signal

1802

1109

self.CheckerCompleted(dbus.Int16(exitstatus),

1803

# This is specific to GNU libC

1804

dbus.Int64(exitstatus << 8),

1110

dbus.Int64(condition),

1805

1111

dbus.String(command))

1806

1112

else:

1807

1113

# Emit D-Bus signal

1808

1114

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

1809

dbus.Int64(

1810

# This is specific to GNU libC

1811

(exitstatus << 8)

1812

| self.last_checker_signal),

1115

dbus.Int64(condition),

1813

1116

dbus.String(command))

1814

return ret

1117

1118

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

1119

*args, **kwargs)

1815

1120

1816

1121

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

1817

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

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

1818

1127

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

1819

1128

# Only if new checker process was started

1820

1129

if (self.checker is not None

1824

1133

return r

1825

1134

1826

1135

def _reset_approved(self):

1827

self.approved = None

1136

self._approved = None

1828

1137

return False

1829

1138

1830

1139

def approve(self, value=True):

1831

self.approved = value

1832

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

1833

* 1000), self._reset_approved)

1834

1140

self.send_changedstate()

1141

self._approved = value

1142

gobject.timeout_add(_timedelta_to_milliseconds

1143

(self.approval_duration),

1144

self._reset_approved)

1145

1835

1146

1836

1147

## D-Bus methods, signals & properties

1837

1838

## Interfaces

1148

_interface = "se.recompile.Mandos.Client"

1839

1149

1840

1150

## Signals

1841

1151

1852

1162

pass

1853

1163

1854

1164

# PropertyChanged - signal

1855

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

1856

1165

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

1857

1166

def PropertyChanged(self, property, value):

1858

1167

"D-Bus signal"

1879

1188

"D-Bus signal"

1880

1189

return self.need_approval()

1881

1190

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

1882

1199

## Methods

1883

1200

1884

1201

# Approve - method

1892

1209

self.checked_ok()

1893

1210

1894

1211

# Enable - method

1895

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

1896

1212

@dbus.service.method(_interface)

1897

1213

def Enable(self):

1898

1214

"D-Bus method"

1899

1215

self.enable()

1900

1216

1901

1217

# StartChecker - method

1902

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

1903

1218

@dbus.service.method(_interface)

1904

1219

def StartChecker(self):

1905

1220

"D-Bus method"

1906

1221

self.start_checker()

1907

1222

1908

1223

# Disable - method

1909

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

1910

1224

@dbus.service.method(_interface)

1911

1225

def Disable(self):

1912

1226

"D-Bus method"

1913

1227

self.disable()

1914

1228

1915

1229

# StopChecker - method

1916

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

1917

1230

@dbus.service.method(_interface)

1918

1231

def StopChecker(self):

1919

1232

self.stop_checker()

1926

1239

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

1927

1240

1928

1241

# ApprovedByDefault - property

1929

@dbus_service_property(_interface,

1930

signature="b",

1242

@dbus_service_property(_interface, signature="b",

1931

1243

access="readwrite")

1932

1244

def ApprovedByDefault_dbus_property(self, value=None):

1933

1245

if value is None: # get

1935

1247

self.approved_by_default = bool(value)

1936

1248

1937

1249

# ApprovalDelay - property

1938

@dbus_service_property(_interface,

1939

signature="t",

1250

@dbus_service_property(_interface, signature="t",

1940

1251

access="readwrite")

1941

1252

def ApprovalDelay_dbus_property(self, value=None):

1942

1253

if value is None: # get

1943

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

1944

* 1000)

1254

return dbus.UInt64(self.approval_delay_milliseconds())

1945

1255

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

1946

1256

1947

1257

# ApprovalDuration - property

1948

@dbus_service_property(_interface,

1949

signature="t",

1258

@dbus_service_property(_interface, signature="t",

1950

1259

access="readwrite")

1951

1260

def ApprovalDuration_dbus_property(self, value=None):

1952

1261

if value is None: # get

1953

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

1954

* 1000)

1262

return dbus.UInt64(_timedelta_to_milliseconds(

1263

self.approval_duration))

1955

1264

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

1956

1265

1957

1266

# Name - property

1958

@dbus_annotations(

1959

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

1960

1267

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

1961

1268

def Name_dbus_property(self):

1962

1269

return dbus.String(self.name)

1963

1270

1964

1271

# Fingerprint - property

1965

@dbus_annotations(

1966

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

1967

1272

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

1968

1273

def Fingerprint_dbus_property(self):

1969

1274

return dbus.String(self.fingerprint)

1970

1275

1971

1276

# Host - property

1972

@dbus_service_property(_interface,

1973

signature="s",

1277

@dbus_service_property(_interface, signature="s",

1974

1278

access="readwrite")

1975

1279

def Host_dbus_property(self, value=None):

1976

1280

if value is None: # get

1977

1281

return dbus.String(self.host)

1978

self.host = str(value)

1282

self.host = value

1979

1283

1980

1284

# Created - property

1981

@dbus_annotations(

1982

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

1983

1285

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

1984

1286

def Created_dbus_property(self):

1985

1287

return datetime_to_dbus(self.created)

1990

1292

return datetime_to_dbus(self.last_enabled)

1991

1293

1992

1294

# Enabled - property

1993

@dbus_service_property(_interface,

1994

signature="b",

1295

@dbus_service_property(_interface, signature="b",

1995

1296

access="readwrite")

1996

1297

def Enabled_dbus_property(self, value=None):

1997

1298

if value is None: # get

2002

1303

self.disable()

2003

1304

2004

1305

# LastCheckedOK - property

2005

@dbus_service_property(_interface,

2006

signature="s",

1306

@dbus_service_property(_interface, signature="s",

2007

1307

access="readwrite")

2008

1308

def LastCheckedOK_dbus_property(self, value=None):

2009

1309

if value is not None:

2011

1311

return

2012

1312

return datetime_to_dbus(self.last_checked_ok)

2013

1313

2014

# LastCheckerStatus - property

2015

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

2016

def LastCheckerStatus_dbus_property(self):

2017

return dbus.Int16(self.last_checker_status)

2018

2019

1314

# Expires - property

2020

1315

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

2021

1316

def Expires_dbus_property(self):

2027

1322

return datetime_to_dbus(self.last_approval_request)

2028

1323

2029

1324

# Timeout - property

2030

@dbus_service_property(_interface,

2031

signature="t",

1325

@dbus_service_property(_interface, signature="t",

2032

1326

access="readwrite")

2033

1327

def Timeout_dbus_property(self, value=None):

2034

1328

if value is None: # get

2035

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

2036

old_timeout = self.timeout

1329

return dbus.UInt64(self.timeout_milliseconds())

2037

1330

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

2038

# Reschedule disabling

2039

if self.enabled:

2040

now = datetime.datetime.utcnow()

2041

self.expires += self.timeout - old_timeout

2042

if self.expires <= now:

2043

# The timeout has passed

2044

self.disable()

2045

else:

2046

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

2047

is None):

2048

return

2049

GLib.source_remove(self.disable_initiator_tag)

2050

self.disable_initiator_tag = GLib.timeout_add(

2051

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

2052

self.disable)

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))

2053

1351

2054

1352

# ExtendedTimeout - property

2055

@dbus_service_property(_interface,

2056

signature="t",

1353

@dbus_service_property(_interface, signature="t",

2057

1354

access="readwrite")

2058

1355

def ExtendedTimeout_dbus_property(self, value=None):

2059

1356

if value is None: # get

2060

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

2061

* 1000)

1357

return dbus.UInt64(self.extended_timeout_milliseconds())

2062

1358

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

2063

1359

2064

1360

# Interval - property

2065

@dbus_service_property(_interface,

2066

signature="t",

1361

@dbus_service_property(_interface, signature="t",

2067

1362

access="readwrite")

2068

1363

def Interval_dbus_property(self, value=None):

2069

1364

if value is None: # get

2070

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

1365

return dbus.UInt64(self.interval_milliseconds())

2071

1366

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

2072

1367

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

2073

1368

return

2074

1369

if self.enabled:

2075

1370

# Reschedule checker run

2076

GLib.source_remove(self.checker_initiator_tag)

2077

self.checker_initiator_tag = GLib.timeout_add(

2078

value, self.start_checker)

2079

self.start_checker() # Start one now, too

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

2080

1375

2081

1376

# Checker - property

2082

@dbus_service_property(_interface,

2083

signature="s",

1377

@dbus_service_property(_interface, signature="s",

2084

1378

access="readwrite")

2085

1379

def Checker_dbus_property(self, value=None):

2086

1380

if value is None: # get

2087

1381

return dbus.String(self.checker_command)

2088

self.checker_command = str(value)

1382

self.checker_command = value

2089

1383

2090

1384

# CheckerRunning - property

2091

@dbus_service_property(_interface,

2092

signature="b",

1385

@dbus_service_property(_interface, signature="b",

2093

1386

access="readwrite")

2094

1387

def CheckerRunning_dbus_property(self, value=None):

2095

1388

if value is None: # get

2100

1393

self.stop_checker()

2101

1394

2102

1395

# ObjectPath - property

2103

@dbus_annotations(

2104

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

2105

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

2106

1396

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

2107

1397

def ObjectPath_dbus_property(self):

2108

1398

return self.dbus_object_path # is already a dbus.ObjectPath

2109

1399

2110

1400

# Secret = property

2111

@dbus_annotations(

2112

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

2113

"invalidates"})

2114

@dbus_service_property(_interface,

2115

signature="ay",

2116

access="write",

2117

byte_arrays=True)

1401

@dbus_service_property(_interface, signature="ay",

1402

access="write", byte_arrays=True)

2118

1403

def Secret_dbus_property(self, value):

2119

self.secret = bytes(value)

1404

self.secret = str(value)

2120

1405

2121

1406

del _interface

2122

1407

2126

1411

self._pipe = child_pipe

2127

1412

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

2128

1413

if not self._pipe.recv():

2129

raise KeyError(fpr)

1414

raise KeyError()

2130

1415

2131

1416

def __getattribute__(self, name):

2132

if name == '_pipe':

1417

if(name == '_pipe'):

2133

1418

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

2134

1419

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

2135

1420

data = self._pipe.recv()

2136

1421

if data[0] == 'data':

2137

1422

return data[1]

2138

1423

if data[0] == 'function':

2139

2140

1424

def func(*args, **kwargs):

2141

1425

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

2142

1426

return self._pipe.recv()[1]

2143

2144

1427

return func

2145

1428

2146

1429

def __setattr__(self, name, value):

2147

if name == '_pipe':

1430

if(name == '_pipe'):

2148

1431

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

2149

1432

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

2150

1433

2151

1434

1435

class ClientDBusTransitional(ClientDBus):

1436

__metaclass__ = AlternateDBusNamesMetaclass

1437

1438

2152

1439

class ClientHandler(socketserver.BaseRequestHandler, object):

2153

1440

"""A class to handle client connections.

2154

1441

2158

1445

def handle(self):

2159

1446

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

2160

1447

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

2161

str(self.client_address))

1448

unicode(self.client_address))

2162

1449

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

2163

1450

self.server.child_pipe.fileno())

2164

1451

2165

session = gnutls.ClientSession(self.request)

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.

2166

1461

2167

1462

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

2168

1463

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

2172

1467

priority = self.server.gnutls_priority

2173

1468

if priority is None:

2174

1469

priority = "NORMAL"

2175

gnutls.priority_set_direct(session._c_object, priority,

2176

None)

1470

(gnutls.library.functions

1471

.gnutls_priority_set_direct(session._c_object,

1472

priority, None))

2177

1473

2178

1474

# Start communication using the Mandos protocol

2179

1475

# Get protocol number

2181

1477

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

2182

1478

try:

2183

1479

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

2184

raise RuntimeError(line)

1480

raise RuntimeError

2185

1481

except (ValueError, IndexError, RuntimeError) as error:

2186

1482

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

2187

1483

return

2189

1485

# Start GnuTLS connection

2190

1486

try:

2191

1487

session.handshake()

2192

except gnutls.Error as error:

1488

except gnutls.errors.GNUTLSError as error:

2193

1489

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

2194

1490

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

2195

1491

# established. Just abandon the request.

2199

1495

approval_required = False

2200

1496

try:

2201

1497

try:

2202

fpr = self.fingerprint(

2203

self.peer_certificate(session))

2204

except (TypeError, gnutls.Error) as error:

1498

fpr = self.fingerprint(self.peer_certificate

1499

(session))

1500

except (TypeError,

1501

gnutls.errors.GNUTLSError) as error:

2205

1502

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

2206

1503

return

2207

1504

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

1505

if self.server.use_dbus:

1506

# Emit D-Bus signal

1507

client.NewRequest(str(self.client_address))

2208

1508

2209

1509

try:

2210

1510

client = ProxyClient(child_pipe, fpr,

2220

1520

while True:

2221

1521

if not client.enabled:

2222

1522

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

2223

client.name)

1523

client.name)

2224

1524

if self.server.use_dbus:

2225

1525

# Emit D-Bus signal

2226

1526

client.Rejected("Disabled")

2227

1527

return

2228

1528

2229

if client.approved or not client.approval_delay:

1529

if client._approved or not client.approval_delay:

2230

1530

#We are approved or approval is disabled

2231

1531

break

2232

elif client.approved is None:

1532

elif client._approved is None:

2233

1533

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

2234

1534

client.name)

2235

1535

if self.server.use_dbus:

2236

1536

# Emit D-Bus signal

2237

1537

client.NeedApproval(

2238

client.approval_delay.total_seconds()

2239

* 1000, client.approved_by_default)

1538

client.approval_delay_milliseconds(),

1539

client.approved_by_default)

2240

1540

else:

2241

1541

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

2242

1542

client.name)

2248

1548

#wait until timeout or approved

2249

1549

time = datetime.datetime.now()

2250

1550

client.changedstate.acquire()

2251

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

1551

(client.changedstate.wait

1552

(float(client._timedelta_to_milliseconds(delay)

1553

/ 1000)))

2252

1554

client.changedstate.release()

2253

1555

time2 = datetime.datetime.now()

2254

1556

if (time2 - time) >= delay:

2265

1567

else:

2266

1568

delay -= time2 - time

2267

1569

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

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

2274

1581

2275

1582

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

2276

1583

# bump the timeout using extended_timeout

2277

client.bump_timeout(client.extended_timeout)

1584

client.checked_ok(client.extended_timeout)

2278

1585

if self.server.use_dbus:

2279

1586

# Emit D-Bus signal

2280

1587

client.GotSecret()

2284

1591

client.approvals_pending -= 1

2285

1592

try:

2286

1593

session.bye()

2287

except gnutls.Error as error:

2288

logger.warning("GnuTLS bye failed",

2289

exc_info=error)

1594

except gnutls.errors.GNUTLSError as error:

1595

logger.warning("GnuTLS bye failed")

2290

1596

2291

1597

@staticmethod

2292

1598

def peer_certificate(session):

2293

1599

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

2294

1600

# If not an OpenPGP certificate...

2295

if (gnutls.certificate_type_get(session._c_object)

2296

!= gnutls.CRT_OPENPGP):

2297

# ...return invalid data

2298

return b""

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

2299

1606

list_size = ctypes.c_uint(1)

2300

cert_list = (gnutls.certificate_get_peers

1607

cert_list = (gnutls.library.functions

1608

.gnutls_certificate_get_peers

2301

1609

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

2302

1610

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

2303

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

1611

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

1612

" certificate")

2304

1613

if list_size.value == 0:

2305

1614

return None

2306

1615

cert = cert_list[0]

2310

1619

def fingerprint(openpgp):

2311

1620

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

2312

1621

# New GnuTLS "datum" with the OpenPGP public key

2313

datum = gnutls.datum_t(

2314

ctypes.cast(ctypes.c_char_p(openpgp),

2315

ctypes.POINTER(ctypes.c_ubyte)),

2316

ctypes.c_uint(len(openpgp)))

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))))

2317

1627

# New empty GnuTLS certificate

2318

crt = gnutls.openpgp_crt_t()

2319

gnutls.openpgp_crt_init(ctypes.byref(crt))

1628

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1629

(gnutls.library.functions

1630

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

2320

1631

# Import the OpenPGP public key into the certificate

2321

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

2322

gnutls.OPENPGP_FMT_RAW)

1632

(gnutls.library.functions

1633

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

1634

gnutls.library.constants

1635

.GNUTLS_OPENPGP_FMT_RAW))

2323

1636

# Verify the self signature in the key

2324

1637

crtverify = ctypes.c_uint()

2325

gnutls.openpgp_crt_verify_self(crt, 0,

2326

ctypes.byref(crtverify))

1638

(gnutls.library.functions

1639

.gnutls_openpgp_crt_verify_self(crt, 0,

1640

ctypes.byref(crtverify)))

2327

1641

if crtverify.value != 0:

2328

gnutls.openpgp_crt_deinit(crt)

2329

raise gnutls.CertificateSecurityError("Verify failed")

1642

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1643

raise (gnutls.errors.CertificateSecurityError

1644

("Verify failed"))

2330

1645

# New buffer for the fingerprint

2331

1646

buf = ctypes.create_string_buffer(20)

2332

1647

buf_len = ctypes.c_size_t()

2333

1648

# Get the fingerprint from the certificate into the buffer

2334

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

2335

ctypes.byref(buf_len))

1649

(gnutls.library.functions

1650

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

1651

ctypes.byref(buf_len)))

2336

1652

# Deinit the certificate

2337

gnutls.openpgp_crt_deinit(crt)

1653

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

2338

1654

# Convert the buffer to a Python bytestring

2339

1655

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

2340

1656

# Convert the bytestring to hexadecimal notation

2344

1660

2345

1661

class MultiprocessingMixIn(object):

2346

1662

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

2347

2348

1663

def sub_process_main(self, request, address):

2349

1664

try:

2350

1665

self.finish_request(request, address)

2351

except Exception:

1666

except:

2352

1667

self.handle_error(request, address)

2353

1668

self.close_request(request)

2354

1669

2355

1670

def process_request(self, request, address):

2356

1671

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

2357

1672

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

2358

args = (request, address))

1673

args = (request,

1674

address))

2359

1675

proc.start()

2360

1676

return proc

2361

1677

2362

1678

2363

1679

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

2364

1680

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

2365

2366

1681

def process_request(self, request, client_address):

2367

1682

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

2368

1683

2377

1692

2378

1693

def add_pipe(self, parent_pipe, proc):

2379

1694

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

2380

raise NotImplementedError()

1695

raise NotImplementedError

2381

1696

2382

1697

2383

1698

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

2389

1704

interface: None or a network interface name (string)

2390

1705

use_ipv6: Boolean; to use IPv6 or not

2391

1706

"""

2392

2393

1707

def __init__(self, server_address, RequestHandlerClass,

2394

interface=None,

2395

use_ipv6=True,

2396

socketfd=None):

2397

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

2398

creating a new one with socket.socket().

2399

"""

1708

interface=None, use_ipv6=True):

2400

1709

self.interface = interface

2401

1710

if use_ipv6:

2402

1711

self.address_family = socket.AF_INET6

2403

if socketfd is not None:

2404

# Save the file descriptor

2405

self.socketfd = socketfd

2406

# Save the original socket.socket() function

2407

self.socket_socket = socket.socket

2408

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

2409

#

2410

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

2411

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

2412

# patching socket.socket.)

2413

#

2414

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

2415

@functools.wraps(socket.socket)

2416

def socket_wrapper(*args, **kwargs):

2417

# Restore original function so subsequent calls are

2418

# not affected.

2419

socket.socket = self.socket_socket

2420

del self.socket_socket

2421

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

2422

# saved file descriptor.

2423

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

2424

# Replace socket.socket() function with wrapper

2425

socket.socket = socket_wrapper

2426

# The socketserver.TCPServer.__init__ will call

2427

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

2428

# socket_wrapper(), if socketfd was set.

2429

1712

socketserver.TCPServer.__init__(self, server_address,

2430

1713

RequestHandlerClass)

2431

2432

1714

def server_bind(self):

2433

1715

"""This overrides the normal server_bind() function

2434

1716

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

2440

1722

self.interface)

2441

1723

else:

2442

1724

try:

2443

self.socket.setsockopt(

2444

socket.SOL_SOCKET, SO_BINDTODEVICE,

2445

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

1725

self.socket.setsockopt(socket.SOL_SOCKET,

1726

SO_BINDTODEVICE,

1727

str(self.interface

1728

+ '\0'))

2446

1729

except socket.error as error:

2447

if error.errno == errno.EPERM:

2448

logger.error("No permission to bind to"

2449

" interface %s", self.interface)

2450

elif error.errno == errno.ENOPROTOOPT:

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:

2451

1735

logger.error("SO_BINDTODEVICE not available;"

2452

1736

" cannot bind to interface %s",

2453

1737

self.interface)

2454

elif error.errno == errno.ENODEV:

2455

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

2456

" cannot bind", self.interface)

2457

1738

else:

2458

1739

raise

2459

1740

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

2462

1743

if self.address_family == socket.AF_INET6:

2463

1744

any_address = "::" # in6addr_any

2464

1745

else:

2465

any_address = "0.0.0.0" # INADDR_ANY

1746

any_address = socket.INADDR_ANY

2466

1747

self.server_address = (any_address,

2467

1748

self.server_address[1])

2468

1749

elif not self.server_address[1]:

2469

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

1750

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

1751

0)

2470

1752

# if self.interface:

2471

1753

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

2472

1754

# 0, # port

2484

1766

gnutls_priority GnuTLS priority string

2485

1767

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

2486

1768

2487

Assumes a GLib.MainLoop event loop.

1769

Assumes a gobject.MainLoop event loop.

2488

1770

"""

2489

2490

1771

def __init__(self, server_address, RequestHandlerClass,

2491

interface=None,

2492

use_ipv6=True,

2493

clients=None,

2494

gnutls_priority=None,

2495

use_dbus=True,

2496

socketfd=None):

1772

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

1773

gnutls_priority=None, use_dbus=True):

2497

1774

self.enabled = False

2498

1775

self.clients = clients

2499

1776

if self.clients is None:

2503

1780

IPv6_TCPServer.__init__(self, server_address,

2504

1781

RequestHandlerClass,

2505

1782

interface = interface,

2506

use_ipv6 = use_ipv6,

2507

socketfd = socketfd)

2508

1783

use_ipv6 = use_ipv6)

2509

1784

def server_activate(self):

2510

1785

if self.enabled:

2511

1786

return socketserver.TCPServer.server_activate(self)

2515

1790

2516

1791

def add_pipe(self, parent_pipe, proc):

2517

1792

# Call "handle_ipc" for both data and EOF events

2518

GLib.io_add_watch(

2519

parent_pipe.fileno(),

2520

GLib.IO_IN | GLib.IO_HUP,

2521

functools.partial(self.handle_ipc,

2522

parent_pipe = parent_pipe,

2523

proc = proc))

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))

2524

1799

2525

def handle_ipc(self, source, condition,

2526

parent_pipe=None,

2527

proc = None,

2528

client_object=None):

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)

2529

1816

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

2530

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

1817

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

2531

1818

# Wait for other process to exit

2532

1819

proc.join()

2533

1820

return False

2540

1827

fpr = request[1]

2541

1828

address = request[2]

2542

1829

2543

for c in self.clients.values():

1830

for c in self.clients.itervalues():

2544

1831

if c.fingerprint == fpr:

2545

1832

client = c

2546

1833

break

2554

1841

parent_pipe.send(False)

2555

1842

return False

2556

1843

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))

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))

2564

1852

parent_pipe.send(True)

2565

1853

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

2566

1854

# same fileno

2572

1860

2573

1861

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

2574

1862

funcname)(*args,

2575

**kwargs)))

1863

**kwargs)))

2576

1864

2577

1865

if command == 'getattr':

2578

1866

attrname = request[1]

2579

if isinstance(client_object.__getattribute__(attrname),

2580

collections.Callable):

2581

parent_pipe.send(('function', ))

1867

if callable(client_object.__getattribute__(attrname)):

1868

parent_pipe.send(('function',))

2582

1869

else:

2583

parent_pipe.send((

2584

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

1870

parent_pipe.send(('data', client_object

1871

.__getattribute__(attrname)))

2585

1872

2586

1873

if command == 'setattr':

2587

1874

attrname = request[1]

2591

1878

return True

2592

1879

2593

1880

2594

def rfc3339_duration_to_delta(duration):

2595

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

2596

2597

>>> rfc3339_duration_to_delta("P7D")

2598

datetime.timedelta(7)

2599

>>> rfc3339_duration_to_delta("PT60S")

2600

datetime.timedelta(0, 60)

2601

>>> rfc3339_duration_to_delta("PT60M")

2602

datetime.timedelta(0, 3600)

2603

>>> rfc3339_duration_to_delta("PT24H")

2604

datetime.timedelta(1)

2605

>>> rfc3339_duration_to_delta("P1W")

2606

datetime.timedelta(7)

2607

>>> rfc3339_duration_to_delta("PT5M30S")

2608

datetime.timedelta(0, 330)

2609

>>> rfc3339_duration_to_delta("P1DT3M20S")

2610

datetime.timedelta(1, 200)

2611

"""

2612

2613

# Parsing an RFC 3339 duration with regular expressions is not

2614

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

2615

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

2616

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

2617

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

2618

# avoid excessive use of external libraries.

2619

2620

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

2621

Token = collections.namedtuple("Token", (

2622

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

2623

# a "group" containing digits

2624

"value", # datetime.timedelta or None

2625

"followers")) # Tokens valid after this token

2626

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

2627

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

2628

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

2629

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

2630

datetime.timedelta(seconds=1),

2631

frozenset((token_end, )))

2632

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

2633

datetime.timedelta(minutes=1),

2634

frozenset((token_second, token_end)))

2635

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

2636

datetime.timedelta(hours=1),

2637

frozenset((token_minute, token_end)))

2638

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

2639

None,

2640

frozenset((token_hour, token_minute,

2641

token_second)))

2642

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

2643

datetime.timedelta(days=1),

2644

frozenset((token_time, token_end)))

2645

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

2646

datetime.timedelta(weeks=4),

2647

frozenset((token_day, token_end)))

2648

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

2649

datetime.timedelta(weeks=52),

2650

frozenset((token_month, token_end)))

2651

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

2652

datetime.timedelta(weeks=1),

2653

frozenset((token_end, )))

2654

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

2655

frozenset((token_year, token_month,

2656

token_day, token_time,

2657

token_week)))

2658

# Define starting values

2659

value = datetime.timedelta() # Value so far

2660

found_token = None

2661

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

2662

s = duration # String left to parse

2663

# Loop until end token is found

2664

while found_token is not token_end:

2665

# Search for any currently valid tokens

2666

for token in followers:

2667

match = token.regexp.match(s)

2668

if match is not None:

2669

# Token found

2670

if token.value is not None:

2671

# Value found, parse digits

2672

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

2673

# Add to value so far

2674

value += factor * token.value

2675

# Strip token from string

2676

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

2677

# Go to found token

2678

found_token = token

2679

# Set valid next tokens

2680

followers = found_token.followers

2681

break

2682

else:

2683

# No currently valid tokens were found

2684

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

2685

.format(duration))

2686

# End token found

2687

return value

2688

2689

2690

1881

def string_to_delta(interval):

2691

1882

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

2692

1883

2703

1894

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

2704

1895

datetime.timedelta(0, 330)

2705

1896

"""

2706

2707

try:

2708

return rfc3339_duration_to_delta(interval)

2709

except ValueError:

2710

pass

2711

2712

1897

timevalue = datetime.timedelta(0)

2713

1898

for s in interval.split():

2714

1899

try:

2715

suffix = s[-1]

1900

suffix = unicode(s[-1])

2716

1901

value = int(s[:-1])

2717

1902

if suffix == "d":

2718

1903

delta = datetime.timedelta(value)

2725

1910

elif suffix == "w":

2726

1911

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

2727

1912

else:

2728

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

2729

except IndexError as e:

1913

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

1914

except (ValueError, IndexError) as e:

2730

1915

raise ValueError(*(e.args))

2731

1916

timevalue += delta

2732

1917

return timevalue

2745

1930

sys.exit()

2746

1931

if not noclose:

2747

1932

# Close all standard open file descriptors

2748

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

1933

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

2749

1934

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

2750

1935

raise OSError(errno.ENODEV,

2751

"{} not a character device"

2752

.format(os.devnull))

1936

"%s not a character device"

1937

% os.path.devnull)

2753

1938

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

2754

1939

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

2755

1940

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

2764

1949

2765

1950

parser = argparse.ArgumentParser()

2766

1951

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

2767

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

1952

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

2768

1953

help="show version number and exit")

2769

1954

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

2770

1955

help="Bind to interface IF")

2776

1961

help="Run self-test")

2777

1962

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

2778

1963

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

2779

" to terminal", default=None)

1964

" to terminal")

2780

1965

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

2781

1966

help="Debug level for stdout output")

2782

1967

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

2789

1974

" files")

2790

1975

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

2791

1976

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

2792

" system bus interface", default=None)

1977

" system bus interface")

2793

1978

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

2794

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

2795

default=None)

1979

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

2796

1980

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

2797

1981

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

2798

" state", default=None)

2799

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

2800

help="Specify a file descriptor to a network"

2801

" socket to use instead of creating one")

1982

" state")

2802

1983

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

2803

1984

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)

2809

1985

2810

1986

options = parser.parse_args()

2811

1987

2812

1988

if options.check:

2813

1989

import doctest

2814

fail_count, test_count = doctest.testmod()

2815

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

1990

doctest.testmod()

1991

sys.exit()

2816

1992

2817

1993

# Default values for config file for server-global settings

2818

1994

server_defaults = { "interface": "",

2820

1996

"port": "",

2821

1997

"debug": "False",

2822

1998

"priority":

2823

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

2824

":+SIGN-DSA-SHA256",

1999

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

2825

2000

"servicename": "Mandos",

2826

2001

"use_dbus": "True",

2827

2002

"use_ipv6": "True",

2828

2003

"debuglevel": "",

2829

2004

"restore": "True",

2830

"socket": "",

2831

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

2832

"foreground": "False",

2833

"zeroconf": "True",

2834

}

2005

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

2006

}

2835

2007

2836

2008

# Parse config file for server-global settings

2837

2009

server_config = configparser.SafeConfigParser(server_defaults)

2838

2010

del server_defaults

2839

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

2011

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

2012

"mandos.conf"))

2840

2013

# Convert the SafeConfigParser object to a dict

2841

2014

server_settings = server_config.defaults()

2842

2015

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

2843

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

2016

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

2844

2017

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

2845

2018

option)

2846

2019

if server_settings["port"]:

2847

2020

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

2848

2021

"port")

2849

if server_settings["socket"]:

2850

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

2851

"socket")

2852

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

2853

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

2854

# happen with a supplied network socket.

2855

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

2856

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

2857

["socket"])

2858

2022

del server_config

2859

2023

2860

2024

# Override the settings from the config file with command line

2861

2025

# options, if set.

2862

2026

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

2863

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

2864

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

2865

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

2027

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

2028

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

2029

"statedir"):

2866

2030

value = getattr(options, option)

2867

2031

if value is not None:

2868

2032

server_settings[option] = value

2869

2033

del options

2870

2034

# Force all strings to be unicode

2871

2035

for option in server_settings.keys():

2872

if isinstance(server_settings[option], bytes):

2873

server_settings[option] = (server_settings[option]

2874

.decode("utf-8"))

2875

# Force all boolean options to be boolean

2876

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

2877

"foreground", "zeroconf"):

2878

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

2879

# Debug implies foreground

2880

if server_settings["debug"]:

2881

server_settings["foreground"] = True

2036

if type(server_settings[option]) is str:

2037

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

2882

2038

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

2883

2039

2884

2040

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

2885

2041

2886

if (not server_settings["zeroconf"]

2887

and not (server_settings["port"]

2888

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

2889

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

2890

2891

2042

# For convenience

2892

2043

debug = server_settings["debug"]

2893

2044

debuglevel = server_settings["debuglevel"]

2895

2046

use_ipv6 = server_settings["use_ipv6"]

2896

2047

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

2897

2048

stored_state_file)

2898

foreground = server_settings["foreground"]

2899

zeroconf = server_settings["zeroconf"]

2900

2049

2901

2050

if debug:

2902

initlogger(debug, logging.DEBUG)

2051

initlogger(logging.DEBUG)

2903

2052

else:

2904

2053

if not debuglevel:

2905

initlogger(debug)

2054

initlogger()

2906

2055

else:

2907

2056

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

2908

initlogger(debug, level)

2057

initlogger(level)

2909

2058

2910

2059

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

2911

syslogger.setFormatter(

2912

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

2913

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

2914

server_settings["servicename"])))

2060

syslogger.setFormatter(logging.Formatter

2061

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

2062

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

2063

% server_settings["servicename"]))

2915

2064

2916

2065

# Parse config file with clients

2917

client_config = configparser.SafeConfigParser(Client

2918

.client_defaults)

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)

2919

2075

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

2920

2076

"clients.conf"))

2921

2077

2922

2078

global mandos_dbus_service

2923

2079

mandos_dbus_service = None

2924

2080

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

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"

2941

2092

try:

2942

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

2943

except IOError as e:

2944

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

2945

exc_info=e)

2093

pidfile = open(pidfilename, "w")

2094

except IOError:

2095

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

2946

2096

2947

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

2948

("mandos", "mandos"),

2949

("nobody", "nogroup")):

2097

try:

2098

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

2099

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

2100

except KeyError:

2950

2101

try:

2951

uid = pwd.getpwnam(name).pw_uid

2952

gid = pwd.getpwnam(group).pw_gid

2953

break

2102

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

2103

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

2954

2104

except KeyError:

2955

continue

2956

else:

2957

uid = 65534

2958

gid = 65534

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

2959

2111

try:

2960

2112

os.setgid(gid)

2961

2113

os.setuid(uid)

2962

if debug:

2963

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

2964

gid))

2965

2114

except OSError as error:

2966

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

2967

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

2968

if error.errno != errno.EPERM:

2969

raise

2115

if error[0] != errno.EPERM:

2116

raise error

2970

2117

2971

2118

if debug:

2972

2119

# Enable all possible GnuTLS debugging

2973

2120

2974

2121

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

2975

2122

# - GnuTLS manual

2976

gnutls.global_set_log_level(11)

2123

gnutls.library.functions.gnutls_global_set_log_level(11)

2977

2124

2978

@gnutls.log_func

2125

@gnutls.library.types.gnutls_log_func

2979

2126

def debug_gnutls(level, string):

2980

2127

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

2981

2128

2982

gnutls.global_set_log_function(debug_gnutls)

2129

(gnutls.library.functions

2130

.gnutls_global_set_log_function(debug_gnutls))

2983

2131

2984

2132

# Redirect stdin so all checkers get /dev/null

2985

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

2133

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

2986

2134

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

2987

2135

if null > 2:

2988

2136

os.close(null)

2137

else:

2138

# No console logging

2139

logger.removeHandler(console)

2989

2140

2990

2141

# Need to fork before connecting to D-Bus

2991

if not foreground:

2142

if not debug:

2992

2143

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

2993

2144

daemon()

2994

2145

2995

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

2996

# to inform GLib that threads will be used.

2997

GLib.threads_init()

2998

2999

2146

global main_loop

3000

2147

# From the Avahi example code

3001

DBusGMainLoop(set_as_default=True)

3002

main_loop = GLib.MainLoop()

2148

DBusGMainLoop(set_as_default=True )

2149

main_loop = gobject.MainLoop()

3003

2150

bus = dbus.SystemBus()

3004

2151

# End of Avahi example code

3005

2152

if use_dbus:

3006

2153

try:

3007

2154

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

3008

bus,

3009

do_not_queue=True)

3010

old_bus_name = dbus.service.BusName(

3011

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

3012

do_not_queue=True)

3013

except dbus.exceptions.DBusException as e:

3014

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

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")

3015

2161

use_dbus = False

3016

2162

server_settings["use_dbus"] = False

3017

2163

tcp_server.use_dbus = False

3018

if zeroconf:

3019

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

3020

service = AvahiServiceToSyslog(

3021

name = server_settings["servicename"],

3022

servicetype = "_mandos._tcp",

3023

protocol = protocol,

3024

bus = bus)

3025

if server_settings["interface"]:

3026

service.interface = if_nametoindex(

3027

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

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"])))

3028

2172

3029

2173

global multiprocessing_manager

3030

2174

multiprocessing_manager = multiprocessing.Manager()

3031

2175

3032

2176

client_class = Client

3033

2177

if use_dbus:

3034

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

3035

3036

client_settings = Client.config_parser(client_config)

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

3037

2204

old_client_settings = {}

3038

clients_data = {}

3039

3040

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

3041

global wnull

3042

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

3043

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

3044

# mode

3045

if debug or not foreground:

3046

wnull.close()

2205

clients_data = []

3047

2206

3048

2207

# Get client data and settings from last running state.

3049

2208

if server_settings["restore"]:

3050

2209

try:

3051

2210

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

3052

if sys.version_info.major == 2:

3053

clients_data, old_client_settings = pickle.load(

3054

stored_state)

3055

else:

3056

bytes_clients_data, bytes_old_client_settings = (

3057

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

3058

### Fix bytes to strings

3059

## clients_data

3060

# .keys()

3061

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

3062

if isinstance(key, bytes)

3063

else key): value

3064

for key, value in

3065

bytes_clients_data.items() }

3066

del bytes_clients_data

3067

for key in clients_data:

3068

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

3069

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

3070

for k, v in

3071

clients_data[key].items() }

3072

clients_data[key] = value

3073

# .client_structure

3074

value["client_structure"] = [

3075

(s.decode("utf-8")

3076

if isinstance(s, bytes)

3077

else s) for s in

3078

value["client_structure"] ]

3079

# .name & .host

3080

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

3081

if isinstance(value[k], bytes):

3082

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

3083

## old_client_settings

3084

# .keys()

3085

old_client_settings = {

3086

(key.decode("utf-8")

3087

if isinstance(key, bytes)

3088

else key): value

3089

for key, value in

3090

bytes_old_client_settings.items() }

3091

del bytes_old_client_settings

3092

# .host

3093

for value in old_client_settings.values():

3094

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

3095

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

3096

.decode("utf-8"))

2211

clients_data, old_client_settings = (pickle.load

2212

(stored_state))

3097

2213

os.remove(stored_state_path)

3098

2214

except IOError as e:

3099

if e.errno == errno.ENOENT:

3100

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

3101

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

3102

else:

3103

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

3104

exc_info=e)

2215

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

2216

.format(e))

2217

if e.errno != errno.ENOENT:

3105

2218

raise

3106

except EOFError as e:

3107

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

3108

"EOFError:",

3109

exc_info=e)

3110

2219

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

2220

with Crypto() as crypt:

2221

for client in clients_data:

2222

client_name = client["name"]

3116

2223

3117

2224

# Decide which value to use after restoring saved state.

3118

2225

# We have three different values: Old config file,

3124

2231

# For each value in new config, check if it

3125

2232

# differs from the old config value (Except for

3126

2233

# the "secret" attribute)

3127

if (name != "secret"

3128

and (value !=

3129

old_client_settings[client_name][name])):

3130

client[name] = value

2234

if (name != "secret" and

2235

value != old_client_settings[client_name]

2236

[name]):

2237

setattr(client, name, value)

3131

2238

except KeyError:

3132

2239

pass

3133

2240

3134

2241

# Clients who has passed its expire date can still be

3135

# enabled if its last checker was successful. A Client

3136

# whose checker succeeded before we stored its state is

3137

# assumed to have successfully run all checkers during

3138

# downtime.

3139

if client["enabled"]:

3140

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

3141

if not client["last_checked_ok"]:

3142

logger.warning(

3143

"disabling client {} - Client never "

3144

"performed a successful checker".format(

3145

client_name))

3146

client["enabled"] = False

3147

elif client["last_checker_status"] != 0:

3148

logger.warning(

3149

"disabling client {} - Client last"

3150

" checker failed with error code"

3151

" {}".format(

3152

client_name,

3153

client["last_checker_status"]))

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:

3154

2250

client["enabled"] = False

3155

2251

else:

3156

client["expires"] = (

3157

datetime.datetime.utcnow()

3158

+ client["timeout"])

3159

logger.debug("Last checker succeeded,"

3160

" keeping {} enabled".format(

3161

client_name))

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

3162

2284

try:

3163

client["secret"] = pgp.decrypt(

3164

client["encrypted_secret"],

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:

2291

# If decryption fails, we use secret from new settings

2292

tcp_server.clients[client_name].secret = (

3165

2293

client_settings[client_name]["secret"])

3166

except PGPError:

3167

# If decryption fails, we use secret from new settings

3168

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

3169

client_name))

3170

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

3171

["secret"])

3172

3173

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

3174

for client_name in (set(old_client_settings)

3175

- set(client_settings)):

3176

del clients_data[client_name]

3177

for client_name in (set(client_settings)

3178

- set(old_client_settings)):

3179

clients_data[client_name] = client_settings[client_name]

3180

3181

# Create all client objects

3182

for client_name, client in clients_data.items():

3183

tcp_server.clients[client_name] = client_class(

3184

name = client_name,

3185

settings = client,

3186

server_settings = server_settings)

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]))

3187

2304

3188

2305

if not tcp_server.clients:

3189

2306

logger.warning("No clients defined")

3190

3191

if not foreground:

3192

if pidfile is not None:

3193

pid = os.getpid()

3194

try:

3195

with pidfile:

3196

print(pid, file=pidfile)

3197

except IOError:

3198

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

3199

pidfilename, pid)

3200

del pidfile

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

3201

2320

del pidfilename

2321

2322

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

3202

2323

3203

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

3204

GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,

3205

lambda: main_loop.quit() and False)

2324

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

2325

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

3206

2326

3207

2327

if use_dbus:

3208

3209

@alternate_dbus_interfaces(

3210

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

3211

class MandosDBusService(DBusObjectWithObjectManager):

2328

class MandosDBusService(dbus.service.Object):

3212

2329

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

3213

3214

2330

def __init__(self):

3215

2331

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

3216

3217

2332

_interface = "se.recompile.Mandos"

3218

2333

3219

2334

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

3226

2341

"D-Bus signal"

3227

2342

pass

3228

2343

3229

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

3230

"true"})

3231

2344

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

3232

2345

def ClientRemoved(self, objpath, name):

3233

2346

"D-Bus signal"

3234

2347

pass

3235

2348

3236

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

3237

"true"})

3238

2349

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

3239

2350

def GetAllClients(self):

3240

2351

"D-Bus method"

3241

return dbus.Array(c.dbus_object_path for c in

3242

tcp_server.clients.values())

2352

return dbus.Array(c.dbus_object_path

2353

for c in

2354

tcp_server.clients.itervalues())

3243

2355

3244

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

3245

"true"})

3246

2356

@dbus.service.method(_interface,

3247

2357

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

3248

2358

def GetAllClientsWithProperties(self):

3249

2359

"D-Bus method"

3250

2360

return dbus.Dictionary(

3251

{ c.dbus_object_path: c.GetAll(

3252

"se.recompile.Mandos.Client")

3253

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

2361

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

2362

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

3254

2363

signature="oa{sv}")

3255

2364

3256

2365

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

3257

2366

def RemoveClient(self, object_path):

3258

2367

"D-Bus method"

3259

for c in tcp_server.clients.values():

2368

for c in tcp_server.clients.itervalues():

3260

2369

if c.dbus_object_path == object_path:

3261

2370

del tcp_server.clients[c.name]

3262

2371

c.remove_from_connection()

3263

# Don't signal the disabling

2372

# Don't signal anything except ClientRemoved

3264

2373

c.disable(quiet=True)

3265

# Emit D-Bus signal for removal

3266

self.client_removed_signal(c)

2374

# Emit D-Bus signal

2375

self.ClientRemoved(object_path, c.name)

3267

2376

return

3268

2377

raise KeyError(object_path)

3269

2378

3270

2379

del _interface

3271

3272

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

3273

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

3274

def GetManagedObjects(self):

3275

"""D-Bus method"""

3276

return dbus.Dictionary(

3277

{ client.dbus_object_path:

3278

dbus.Dictionary(

3279

{ interface: client.GetAll(interface)

3280

for interface in

3281

client._get_all_interface_names()})

3282

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

3283

3284

def client_added_signal(self, client):

3285

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

3286

if use_dbus:

3287

# New standard signal

3288

self.InterfacesAdded(

3289

client.dbus_object_path,

3290

dbus.Dictionary(

3291

{ interface: client.GetAll(interface)

3292

for interface in

3293

client._get_all_interface_names()}))

3294

# Old signal

3295

self.ClientAdded(client.dbus_object_path)

3296

3297

def client_removed_signal(self, client):

3298

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

3299

if use_dbus:

3300

# New standard signal

3301

self.InterfacesRemoved(

3302

client.dbus_object_path,

3303

client._get_all_interface_names())

3304

# Old signal

3305

self.ClientRemoved(client.dbus_object_path,

3306

client.name)

3307

2380

3308

mandos_dbus_service = MandosDBusService()

2381

class MandosDBusServiceTransitional(MandosDBusService):

2382

__metaclass__ = AlternateDBusNamesMetaclass

2383

mandos_dbus_service = MandosDBusServiceTransitional()

3309

2384

3310

2385

def cleanup():

3311

2386

"Cleanup function; run on exit"

3312

if zeroconf:

3313

service.cleanup()

2387

service.cleanup()

3314

2388

3315

2389

multiprocessing.active_children()

3316

wnull.close()

3317

2390

if not (tcp_server.clients or client_settings):

3318

2391

return

3319

2392

3320

2393

# Store client before exiting. Secrets are encrypted with key

3321

2394

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

3322

2395

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

3323

clients = {}

3324

with PGPEngine() as pgp:

3325

for client in tcp_server.clients.values():

2396

clients = []

2397

with Crypto() as crypt:

2398

for client in tcp_server.clients.itervalues():

3326

2399

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

3327

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

3328

key)

2400

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

2401

key)

3329

2402

client_dict = {}

3330

2403

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):

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)):

3337

2409

exclude.add(name)

3338

2410

3339

2411

client_dict["encrypted_secret"] = (client

3342

2414

if attr not in exclude:

3343

2415

client_dict[attr] = getattr(client, attr)

3344

2416

3345

clients[client.name] = client_dict

2417

clients.append(client_dict)

3346

2418

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

3347

2419

3348

2420

try:

3349

with tempfile.NamedTemporaryFile(

3350

mode='wb',

3351

suffix=".pickle",

3352

prefix='clients-',

3353

dir=os.path.dirname(stored_state_path),

3354

delete=False) as stored_state:

3355

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

3356

protocol = 2)

3357

tempname = stored_state.name

3358

os.rename(tempname, stored_state_path)

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)

3359

2425

except (IOError, OSError) as e:

3360

if not debug:

3361

try:

3362

os.remove(tempname)

3363

except NameError:

3364

pass

3365

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

3366

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

3367

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

3368

else:

3369

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

3370

exc_info=e)

2426

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

2427

.format(e))

2428

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

3371

2429

raise

3372

2430

3373

2431

# Delete all clients, and settings from config

3375

2433

name, client = tcp_server.clients.popitem()

3376

2434

if use_dbus:

3377

2435

client.remove_from_connection()

3378

# Don't signal the disabling

2436

# Don't signal anything except ClientRemoved

3379

2437

client.disable(quiet=True)

3380

# Emit D-Bus signal for removal

3381

2438

if use_dbus:

3382

mandos_dbus_service.client_removed_signal(client)

2439

# Emit D-Bus signal

2440

mandos_dbus_service.ClientRemoved(client

2441

.dbus_object_path,

2442

client.name)

3383

2443

client_settings.clear()

3384

2444

3385

2445

atexit.register(cleanup)

3386

2446

3387

for client in tcp_server.clients.values():

2447

for client in tcp_server.clients.itervalues():

3388

2448

if use_dbus:

3389

# Emit D-Bus signal for adding

3390

mandos_dbus_service.client_added_signal(client)

2449

# Emit D-Bus signal

2450

mandos_dbus_service.ClientAdded(client.dbus_object_path)

3391

2451

# Need to initiate checking of clients

3392

2452

if client.enabled:

3393

2453

client.init_checker()

3396

2456

tcp_server.server_activate()

3397

2457

3398

2458

# Find out what port we got

3399

if zeroconf:

3400

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

2459

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

3401

2460

if use_ipv6:

3402

2461

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

3403

" flowinfo %d, scope_id %d",

3404

*tcp_server.socket.getsockname())

2462

" flowinfo %d, scope_id %d"

2463

% tcp_server.socket.getsockname())

3405

2464

else: # IPv4

3406

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

3407

*tcp_server.socket.getsockname())

2465

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

2466

% tcp_server.socket.getsockname())

3408

2467

3409

2468

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

3410

2469

3411

2470

try:

3412

if zeroconf:

3413

# From the Avahi example code

3414

try:

3415

service.activate()

3416

except dbus.exceptions.DBusException as error:

3417

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

3418

cleanup()

3419

sys.exit(1)

3420

# End of Avahi example code

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

3421

2479

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))

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))

3426

2484

3427

2485

logger.debug("Starting main loop")

3428

2486

main_loop.run()

3429

2487

except AvahiError as error:

3430

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

2488

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

3431

2489

cleanup()

3432

2490

sys.exit(1)

3433

2491

except KeyboardInterrupt: