/mandos/trunk : revision 516

11

# "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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# Try to find the value of SO_BINDTODEVICE:

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try:

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

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

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SO_BINDTODEVICE = socket.SO_BINDTODEVICE

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except AttributeError:

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try:

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# This is where SO_BINDTODEVICE was up to and including Python

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# 2.6, and also 3.2:

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from IN import SO_BINDTODEVICE

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except ImportError:

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

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# Try running the C preprocessor:

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try:

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

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"/dev/stdin"],

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stdin=subprocess.PIPE,

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stdout=subprocess.PIPE)

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stdout = cc.communicate(

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

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

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except (OSError, ValueError, IndexError):

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# No value found

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SO_BINDTODEVICE = None

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if sys.version_info.major == 2:

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str = unicode

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version = "1.7.9"

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stored_state_file = "clients.pickle"

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logger = logging.getLogger()

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syslogger = None

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try:

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if_nametoindex = ctypes.cdll.LoadLibrary(

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

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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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return interface_index

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def copy_function(func):

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

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if sys.version_info.major == 2:

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return types.FunctionType(func.func_code,

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func.func_globals,

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func.func_name,

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func.func_defaults,

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func.func_closure)

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else:

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return types.FunctionType(func.__code__,

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func.__globals__,

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func.__name__,

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func.__defaults__,

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func.__closure__)

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

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"""init logger and add loglevel"""

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global syslogger

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syslogger = (logging.handlers.SysLogHandler(

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facility = logging.handlers.SysLogHandler.LOG_DAEMON,

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address = "/dev/log"))

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syslogger.setFormatter(logging.Formatter

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

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' %(message)s'))

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logger.addHandler(syslogger)

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if debug:

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console = logging.StreamHandler()

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

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' [%(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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pass

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class PGPEngine(object):

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

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def __init__(self):

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

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self.gpg = "gpg"

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try:

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

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for line in output.splitlines():

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

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if name == "gpg":

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self.gpg = path

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break

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except OSError as e:

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if e.errno != errno.ENOENT:

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raise

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self.gnupgargs = ['--batch',

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'--homedir', self.tempdir,

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'--force-mdc',

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'--quiet']

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

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

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

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def __enter__(self):

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return self

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

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self._cleanup()

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return False

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def __del__(self):

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self._cleanup()

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def _cleanup(self):

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if self.tempdir is not None:

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# Delete contents of tempdir

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

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topdown = False):

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for filename in files:

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

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for dirname in dirs:

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os.rmdir(os.path.join(root, dirname))

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# Remove tempdir

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os.rmdir(self.tempdir)

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self.tempdir = None

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def password_encode(self, password):

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

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

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

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if len(encoded) > 2048:

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

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

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

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

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return encoded

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def encrypt(self, data, password):

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passphrase = self.password_encode(password)

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with tempfile.NamedTemporaryFile(

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dir=self.tempdir) as passfile:

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passfile.write(passphrase)

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passfile.flush()

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

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'--passphrase-file',

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passfile.name]

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+ self.gnupgargs,

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stdin = subprocess.PIPE,

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stdout = subprocess.PIPE,

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stderr = subprocess.PIPE)

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

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if proc.returncode != 0:

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raise PGPError(err)

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return ciphertext

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def decrypt(self, data, password):

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passphrase = self.password_encode(password)

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with tempfile.NamedTemporaryFile(

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dir = self.tempdir) as passfile:

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passfile.write(passphrase)

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passfile.flush()

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

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'--passphrase-file',

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passfile.name]

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+ self.gnupgargs,

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stdin = subprocess.PIPE,

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stdout = subprocess.PIPE,

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stderr = subprocess.PIPE)

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

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if proc.returncode != 0:

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raise PGPError(err)

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return decrypted_plaintext

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# Pretend that we have an Avahi module

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class Avahi(object):

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

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

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

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

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PROTO_INET = 0 # avahi-common/address.h

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PROTO_INET6 = 1 # avahi-common/address.h

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DBUS_NAME = "org.freedesktop.Avahi"

284

DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"

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DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"

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DBUS_PATH_SERVER = "/"

287

def string_array_to_txt_array(self, t):

288

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()

83

SO_BINDTODEVICE = None

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85

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version = "1.4.0"

87

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#logger = logging.getLogger('mandos')

89

logger = logging.Logger('mandos')

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syslogger = (logging.handlers.SysLogHandler

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(facility = logging.handlers.SysLogHandler.LOG_DAEMON,

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

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syslogger.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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98

console = logging.StreamHandler()

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console.setFormatter(logging.Formatter('%(name)s [%(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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103

300

104

class AvahiError(Exception):

301

105

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

302

106

self.value = value

303

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

304

**kwargs)

305

107

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

108

def __unicode__(self):

109

return unicode(repr(self.value))

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110

307

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class AvahiServiceError(AvahiError):

308

112

pass

309

113

310

311

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class AvahiGroupError(AvahiError):

312

115

pass

313

116

320

123

Used to optionally bind to the specified interface.

321

124

name: string; Example: 'Mandos'

322

125

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

323

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

126

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.

332

135

server: D-Bus Server

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bus: dbus.SystemBus()

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"""

335

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def __init__(self,

337

interface = avahi.IF_UNSPEC,

338

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,

345

protocol = avahi.PROTO_UNSPEC,

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bus = None):

138

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

139

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

140

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

141

protocol = avahi.PROTO_UNSPEC, bus = None):

347

142

self.interface = interface

348

143

self.name = name

349

144

self.type = servicetype

358

153

self.server = None

359

154

self.bus = bus

360

155

self.entry_group_state_changed_match = None

361

362

def rename(self, remove=True):

156

def rename(self):

363

157

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

364

158

if self.rename_count >= self.max_renames:

365

159

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

366

160

" after %i retries, exiting.",

367

161

self.rename_count)

368

162

raise AvahiServiceError("Too many renames")

369

self.name = str(

370

self.server.GetAlternativeServiceName(self.name))

371

self.rename_count += 1

163

self.name = unicode(self.server

164

.GetAlternativeServiceName(self.name))

372

165

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

373

166

self.name)

374

if remove:

375

self.remove()

167

syslogger.setFormatter(logging.Formatter

168

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

169

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

170

% self.name))

171

self.remove()

376

172

try:

377

173

self.add()

378

174

except dbus.exceptions.DBusException as error:

379

if (error.get_dbus_name()

380

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

381

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

382

return self.rename(remove=False)

383

else:

384

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

385

self.cleanup()

386

os._exit(1)

387

175

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

176

self.cleanup()

177

os._exit(1)

178

self.rename_count += 1

388

179

def remove(self):

389

180

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

390

181

if self.entry_group_state_changed_match is not None:

392

183

self.entry_group_state_changed_match = None

393

184

if self.group is not None:

394

185

self.group.Reset()

395

396

186

def add(self):

397

187

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

398

188

self.remove()

403

193

avahi.DBUS_INTERFACE_ENTRY_GROUP)

404

194

self.entry_group_state_changed_match = (

405

195

self.group.connect_to_signal(

406

'StateChanged', self.entry_group_state_changed))

196

'StateChanged', self .entry_group_state_changed))

407

197

logger.debug("Adding Zeroconf service '%s' of type '%s' ...",

408

198

self.name, self.type)

409

199

self.group.AddService(

415

205

dbus.UInt16(self.port),

416

206

avahi.string_array_to_txt_array(self.TXT))

417

207

self.group.Commit()

418

419

208

def entry_group_state_changed(self, state, error):

420

209

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

421

210

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

427

216

self.rename()

428

217

elif state == avahi.ENTRY_GROUP_FAILURE:

429

218

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

430

str(error))

431

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

432

219

unicode(error))

220

raise AvahiGroupError("State changed: %s"

221

% unicode(error))

433

222

def cleanup(self):

434

223

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

435

224

if self.group is not None:

436

225

try:

437

226

self.group.Free()

438

227

except (dbus.exceptions.UnknownMethodException,

439

dbus.exceptions.DBusException):

228

dbus.exceptions.DBusException) as e:

440

229

pass

441

230

self.group = None

442

231

self.remove()

443

444

232

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

445

233

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

446

234

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

447

bad_states = {

448

avahi.SERVER_INVALID: "Zeroconf server invalid",

449

avahi.SERVER_REGISTERING: None,

450

avahi.SERVER_COLLISION: "Zeroconf server name collision",

451

avahi.SERVER_FAILURE: "Zeroconf server failure",

452

}

235

bad_states = { avahi.SERVER_INVALID:

236

"Zeroconf server invalid",

237

avahi.SERVER_REGISTERING: None,

238

avahi.SERVER_COLLISION:

239

"Zeroconf server name collision",

240

avahi.SERVER_FAILURE:

241

"Zeroconf server failure" }

453

242

if state in bad_states:

454

243

if bad_states[state] is not None:

455

244

if error is None:

458

247

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

459

248

self.cleanup()

460

249

elif state == avahi.SERVER_RUNNING:

461

try:

462

self.add()

463

except dbus.exceptions.DBusException as error:

464

if (error.get_dbus_name()

465

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

466

logger.info("Local Zeroconf service name"

467

" collision.")

468

return self.rename(remove=False)

469

else:

470

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

471

self.cleanup()

472

os._exit(1)

250

self.add()

473

251

else:

474

252

if error is None:

475

253

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

476

254

else:

477

255

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

478

479

256

def activate(self):

480

257

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

481

258

if self.server is None:

485

262

follow_name_owner_changes=True),

486

263

avahi.DBUS_INTERFACE_SERVER)

487

264

self.server.connect_to_signal("StateChanged",

488

self.server_state_changed)

265

self.server_state_changed)

489

266

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

490

267

491

268

492

class AvahiServiceToSyslog(AvahiService):

493

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

494

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

495

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

496

syslogger.setFormatter(logging.Formatter(

497

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

498

.format(self.name)))

499

return ret

500

501

# Pretend that we have a GnuTLS module

502

class GnuTLS(object):

503

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

504

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

505

506

_library = ctypes.cdll.LoadLibrary(

507

ctypes.util.find_library("gnutls"))

508

_need_version = b"3.3.0"

509

def __init__(self):

510

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

511

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

512

# happens.

513

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

514

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

515

.format(self._need_version))

516

517

# Unless otherwise indicated, the constants and types below are

518

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

519

520

# Constants

521

E_SUCCESS = 0

522

E_INTERRUPTED = -52

523

E_AGAIN = -28

524

CRT_OPENPGP = 2

525

CLIENT = 2

526

SHUT_RDWR = 0

527

CRD_CERTIFICATE = 1

528

E_NO_CERTIFICATE_FOUND = -49

529

OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h

530

531

# Types

532

class session_int(ctypes.Structure):

533

_fields_ = []

534

session_t = ctypes.POINTER(session_int)

535

class certificate_credentials_st(ctypes.Structure):

536

_fields_ = []

537

certificate_credentials_t = ctypes.POINTER(

538

certificate_credentials_st)

539

certificate_type_t = ctypes.c_int

540

class datum_t(ctypes.Structure):

541

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

542

('size', ctypes.c_uint)]

543

class openpgp_crt_int(ctypes.Structure):

544

_fields_ = []

545

openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)

546

openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h

547

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

548

credentials_type_t = ctypes.c_int

549

transport_ptr_t = ctypes.c_void_p

550

close_request_t = ctypes.c_int

551

552

# Exceptions

553

class Error(Exception):

554

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

555

# exception might be raised from within GnuTLS.__init__,

556

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

557

# global variable has happened.

558

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

559

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

560

# code is passed, convert it to a string with

561

# gnutls.strerror()

562

self.code = code

563

if message is None and code is not None:

564

message = GnuTLS.strerror(code)

565

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

566

message, *args)

567

568

class CertificateSecurityError(Error):

569

pass

570

571

# Classes

572

class Credentials(object):

573

def __init__(self):

574

self._c_object = gnutls.certificate_credentials_t()

575

gnutls.certificate_allocate_credentials(

576

ctypes.byref(self._c_object))

577

self.type = gnutls.CRD_CERTIFICATE

578

579

def __del__(self):

580

gnutls.certificate_free_credentials(self._c_object)

581

582

class ClientSession(object):

583

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

584

self._c_object = gnutls.session_t()

585

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

586

gnutls.set_default_priority(self._c_object)

587

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

588

gnutls.handshake_set_private_extensions(self._c_object,

589

True)

590

self.socket = socket

591

if credentials is None:

592

credentials = gnutls.Credentials()

593

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

594

ctypes.cast(credentials._c_object,

595

ctypes.c_void_p))

596

self.credentials = credentials

597

598

def __del__(self):

599

gnutls.deinit(self._c_object)

600

601

def handshake(self):

602

return gnutls.handshake(self._c_object)

603

604

def send(self, data):

605

data = bytes(data)

606

data_len = len(data)

607

while data_len > 0:

608

data_len -= gnutls.record_send(self._c_object,

609

data[-data_len:],

610

data_len)

611

612

def bye(self):

613

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

614

615

# Error handling functions

616

def _error_code(result):

617

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

618

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

619

if result >= 0:

620

return result

621

if result == gnutls.E_NO_CERTIFICATE_FOUND:

622

raise gnutls.CertificateSecurityError(code = result)

623

raise gnutls.Error(code = result)

624

625

def _retry_on_error(result, func, arguments):

626

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

627

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

628

while result < 0:

629

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

630

return _error_code(result)

631

result = func(*arguments)

632

return result

633

634

# Unless otherwise indicated, the function declarations below are

635

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

636

637

# Functions

638

priority_set_direct = _library.gnutls_priority_set_direct

639

priority_set_direct.argtypes = [session_t, ctypes.c_char_p,

640

ctypes.POINTER(ctypes.c_char_p)]

641

priority_set_direct.restype = _error_code

642

643

init = _library.gnutls_init

644

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

645

init.restype = _error_code

646

647

set_default_priority = _library.gnutls_set_default_priority

648

set_default_priority.argtypes = [session_t]

649

set_default_priority.restype = _error_code

650

651

record_send = _library.gnutls_record_send

652

record_send.argtypes = [session_t, ctypes.c_void_p,

653

ctypes.c_size_t]

654

record_send.restype = ctypes.c_ssize_t

655

record_send.errcheck = _retry_on_error

656

657

certificate_allocate_credentials = (

658

_library.gnutls_certificate_allocate_credentials)

659

certificate_allocate_credentials.argtypes = [

660

ctypes.POINTER(certificate_credentials_t)]

661

certificate_allocate_credentials.restype = _error_code

662

663

certificate_free_credentials = (

664

_library.gnutls_certificate_free_credentials)

665

certificate_free_credentials.argtypes = [certificate_credentials_t]

666

certificate_free_credentials.restype = None

667

668

handshake_set_private_extensions = (

669

_library.gnutls_handshake_set_private_extensions)

670

handshake_set_private_extensions.argtypes = [session_t,

671

ctypes.c_int]

672

handshake_set_private_extensions.restype = None

673

674

credentials_set = _library.gnutls_credentials_set

675

credentials_set.argtypes = [session_t, credentials_type_t,

676

ctypes.c_void_p]

677

credentials_set.restype = _error_code

678

679

strerror = _library.gnutls_strerror

680

strerror.argtypes = [ctypes.c_int]

681

strerror.restype = ctypes.c_char_p

682

683

certificate_type_get = _library.gnutls_certificate_type_get

684

certificate_type_get.argtypes = [session_t]

685

certificate_type_get.restype = _error_code

686

687

certificate_get_peers = _library.gnutls_certificate_get_peers

688

certificate_get_peers.argtypes = [session_t,

689

ctypes.POINTER(ctypes.c_uint)]

690

certificate_get_peers.restype = ctypes.POINTER(datum_t)

691

692

global_set_log_level = _library.gnutls_global_set_log_level

693

global_set_log_level.argtypes = [ctypes.c_int]

694

global_set_log_level.restype = None

695

696

global_set_log_function = _library.gnutls_global_set_log_function

697

global_set_log_function.argtypes = [log_func]

698

global_set_log_function.restype = None

699

700

deinit = _library.gnutls_deinit

701

deinit.argtypes = [session_t]

702

deinit.restype = None

703

704

handshake = _library.gnutls_handshake

705

handshake.argtypes = [session_t]

706

handshake.restype = _error_code

707

handshake.errcheck = _retry_on_error

708

709

transport_set_ptr = _library.gnutls_transport_set_ptr

710

transport_set_ptr.argtypes = [session_t, transport_ptr_t]

711

transport_set_ptr.restype = None

712

713

bye = _library.gnutls_bye

714

bye.argtypes = [session_t, close_request_t]

715

bye.restype = _error_code

716

bye.errcheck = _retry_on_error

717

718

check_version = _library.gnutls_check_version

719

check_version.argtypes = [ctypes.c_char_p]

720

check_version.restype = ctypes.c_char_p

721

722

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

723

724

openpgp_crt_init = _library.gnutls_openpgp_crt_init

725

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

726

openpgp_crt_init.restype = _error_code

727

728

openpgp_crt_import = _library.gnutls_openpgp_crt_import

729

openpgp_crt_import.argtypes = [openpgp_crt_t,

730

ctypes.POINTER(datum_t),

731

openpgp_crt_fmt_t]

732

openpgp_crt_import.restype = _error_code

733

734

openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self

735

openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,

736

ctypes.POINTER(ctypes.c_uint)]

737

openpgp_crt_verify_self.restype = _error_code

738

739

openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit

740

openpgp_crt_deinit.argtypes = [openpgp_crt_t]

741

openpgp_crt_deinit.restype = None

742

743

openpgp_crt_get_fingerprint = (

744

_library.gnutls_openpgp_crt_get_fingerprint)

745

openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,

746

ctypes.c_void_p,

747

ctypes.POINTER(

748

ctypes.c_size_t)]

749

openpgp_crt_get_fingerprint.restype = _error_code

750

751

# Remove non-public functions

752

del _error_code, _retry_on_error

753

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

754

gnutls = GnuTLS()

755

756

def call_pipe(connection, # : multiprocessing.Connection

757

func, *args, **kwargs):

758

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

759

760

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

761

return value on the provided multiprocessing.Connection.

762

"""

763

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

764

connection.close()

765

269

def _timedelta_to_milliseconds(td):

270

"Convert a datetime.timedelta() to milliseconds"

271

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

272

+ (td.seconds * 1000)

273

+ (td.microseconds // 1000))

274

766

275

class Client(object):

767

276

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

768

277

769

278

Attributes:

770

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

279

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

771

280

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

772

281

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

773

282

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

774

283

to see if the client lives.

775

284

'None' if no process is running.

776

checker_callback_tag: a GLib event source tag, or None

285

checker_callback_tag: a gobject event source tag, or None

777

286

checker_command: string; External command which is run to check

778

287

if client lives. %() expansions are done at

779

288

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

780

289

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

781

checker_initiator_tag: a GLib event source tag, or None

290

checker_initiator_tag: a gobject event source tag, or None

782

291

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

783

client_structure: Object describing what attributes a client has

784

and is used for storing the client at exit

785

292

current_checker_command: string; current running checker_command

786

disable_initiator_tag: a GLib event source tag, or None

293

disable_hook: If set, called by disable() as disable_hook(self)

294

disable_initiator_tag: a gobject event source tag, or None

787

295

enabled: bool()

788

296

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

789

297

uniquely identify the client

791

299

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

792

300

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

793

301

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

794

last_checker_status: integer between 0 and 255 reflecting exit

795

status of last checker. -1 reflects crashed

796

checker, -2 means no checker completed yet.

797

last_checker_signal: The signal which killed the last checker, if

798

last_checker_status is -1

799

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

302

last_enabled: datetime.datetime(); (UTC)

800

303

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

801

304

D-Bus identifiers

802

305

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

803

306

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

804

307

until this client is disabled

805

extended_timeout: extra long timeout when secret has been sent

308

extended_timeout: extra long timeout when password has been sent

806

309

runtime_expansions: Allowed attributes for runtime expansion.

807

310

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

808

311

disabled, or None

809

server_settings: The server_settings dict from main()

810

312

"""

811

313

812

314

runtime_expansions = ("approval_delay", "approval_duration",

813

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

814

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

815

"last_approval_request", "last_checked_ok",

315

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

316

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

816

317

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

817

client_defaults = {

818

"timeout": "PT5M",

819

"extended_timeout": "PT15M",

820

"interval": "PT2M",

821

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

822

"host": "",

823

"approval_delay": "PT0S",

824

"approval_duration": "PT1S",

825

"approved_by_default": "True",

826

"enabled": "True",

827

}

828

829

@staticmethod

830

def config_parser(config):

831

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

832

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

833

with exceptions for any special settings as defined above.

834

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

835

value given the same arguments.

836

"""

837

settings = {}

838

for client_name in config.sections():

839

section = dict(config.items(client_name))

840

client = settings[client_name] = {}

841

842

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

843

# Reformat values from string types to Python types

844

client["approved_by_default"] = config.getboolean(

845

client_name, "approved_by_default")

846

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

847

"enabled")

848

849

# Uppercase and remove spaces from fingerprint for later

850

# comparison purposes with return value from the

851

# fingerprint() function

852

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

853

.replace(" ", ""))

854

if "secret" in section:

855

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

856

.encode("utf-8"),

857

"base64")

858

elif "secfile" in section:

859

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

860

(section["secfile"])),

861

"rb") as secfile:

862

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

863

else:

864

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

865

.format(section))

866

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

867

client["extended_timeout"] = string_to_delta(

868

section["extended_timeout"])

869

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

870

client["approval_delay"] = string_to_delta(

871

section["approval_delay"])

872

client["approval_duration"] = string_to_delta(

873

section["approval_duration"])

874

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

875

client["last_approval_request"] = None

876

client["last_checked_ok"] = None

877

client["last_checker_status"] = -2

878

879

return settings

880

881

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

318

319

def timeout_milliseconds(self):

320

"Return the 'timeout' attribute in milliseconds"

321

return _timedelta_to_milliseconds(self.timeout)

322

323

def extended_timeout_milliseconds(self):

324

"Return the 'extended_timeout' attribute in milliseconds"

325

return _timedelta_to_milliseconds(self.extended_timeout)

326

327

def interval_milliseconds(self):

328

"Return the 'interval' attribute in milliseconds"

329

return _timedelta_to_milliseconds(self.interval)

330

331

def approval_delay_milliseconds(self):

332

return _timedelta_to_milliseconds(self.approval_delay)

333

334

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

335

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

336

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

337

attribute."""

882

338

self.name = name

883

if server_settings is None:

884

server_settings = {}

885

self.server_settings = server_settings

886

# adding all client settings

887

for setting, value in settings.items():

888

setattr(self, setting, value)

889

890

if self.enabled:

891

if not hasattr(self, "last_enabled"):

892

self.last_enabled = datetime.datetime.utcnow()

893

if not hasattr(self, "expires"):

894

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

895

+ self.timeout)

896

else:

897

self.last_enabled = None

898

self.expires = None

899

339

if config is None:

340

config = {}

900

341

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

342

# Uppercase and remove spaces from fingerprint for later

343

# comparison purposes with return value from the fingerprint()

344

# function

345

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

346

.replace(" ", ""))

901

347

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

902

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

903

datetime.datetime.utcnow())

904

905

# attributes specific for this server instance

348

if "secret" in config:

349

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

350

elif "secfile" in config:

351

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

352

(config["secfile"])),

353

"rb") as secfile:

354

self.secret = secfile.read()

355

else:

356

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

357

% self.name)

358

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

359

self.created = datetime.datetime.utcnow()

360

self.enabled = False

361

self.last_approval_request = None

362

self.last_enabled = None

363

self.last_checked_ok = None

364

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

365

self.extended_timeout = string_to_delta(config

366

["extended_timeout"])

367

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

368

self.disable_hook = disable_hook

906

369

self.checker = None

907

370

self.checker_initiator_tag = None

908

371

self.disable_initiator_tag = None

372

self.expires = None

909

373

self.checker_callback_tag = None

374

self.checker_command = config["checker"]

910

375

self.current_checker_command = None

911

self.approved = None

376

self.last_connect = None

377

self._approved = None

378

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

379

True)

912

380

self.approvals_pending = 0

913

self.changedstate = multiprocessing_manager.Condition(

914

multiprocessing_manager.Lock())

915

self.client_structure = [attr

916

for attr in self.__dict__.keys()

917

if not attr.startswith("_")]

918

self.client_structure.append("client_structure")

919

920

for name, t in inspect.getmembers(

921

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

922

if not name.startswith("_"):

923

self.client_structure.append(name)

381

self.approval_delay = string_to_delta(

382

config["approval_delay"])

383

self.approval_duration = string_to_delta(

384

config["approval_duration"])

385

self.changedstate = (multiprocessing_manager

386

.Condition(multiprocessing_manager

387

.Lock()))

924

388

925

# Send notice to process children that client state has changed

926

389

def send_changedstate(self):

927

with self.changedstate:

928

self.changedstate.notify_all()

390

self.changedstate.acquire()

391

self.changedstate.notify_all()

392

self.changedstate.release()

929

393

930

394

def enable(self):

931

395

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

932

396

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

933

397

# Already enabled

934

398

return

399

self.send_changedstate()

400

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

401

# and every interval from then on.

402

self.checker_initiator_tag = (gobject.timeout_add

403

(self.interval_milliseconds(),

404

self.start_checker))

405

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

935

406

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

407

self.disable_initiator_tag = (gobject.timeout_add

408

(self.timeout_milliseconds(),

409

self.disable))

936

410

self.enabled = True

937

411

self.last_enabled = datetime.datetime.utcnow()

938

self.init_checker()

939

self.send_changedstate()

412

# Also start a new checker *right now*.

413

self.start_checker()

940

414

941

415

def disable(self, quiet=True):

942

416

"""Disable this client."""

943

417

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

944

418

return False

945

419

if not quiet:

420

self.send_changedstate()

421

if not quiet:

946

422

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

947

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

948

GLib.source_remove(self.disable_initiator_tag)

423

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

424

gobject.source_remove(self.disable_initiator_tag)

949

425

self.disable_initiator_tag = None

950

426

self.expires = None

951

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

952

GLib.source_remove(self.checker_initiator_tag)

427

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

428

gobject.source_remove(self.checker_initiator_tag)

953

429

self.checker_initiator_tag = None

954

430

self.stop_checker()

431

if self.disable_hook:

432

self.disable_hook(self)

955

433

self.enabled = False

956

if not quiet:

957

self.send_changedstate()

958

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

434

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

959

435

return False

960

436

961

437

def __del__(self):

438

self.disable_hook = None

962

439

self.disable()

963

440

964

def init_checker(self):

965

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

966

# and every interval from then on.

967

if self.checker_initiator_tag is not None:

968

GLib.source_remove(self.checker_initiator_tag)

969

self.checker_initiator_tag = GLib.timeout_add(

970

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

971

self.start_checker)

972

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

973

if self.disable_initiator_tag is not None:

974

GLib.source_remove(self.disable_initiator_tag)

975

self.disable_initiator_tag = GLib.timeout_add(

976

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

977

# Also start a new checker *right now*.

978

self.start_checker()

979

980

def checker_callback(self, source, condition, connection,

981

command):

441

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

982

442

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

983

443

self.checker_callback_tag = None

984

444

self.checker = None

985

# Read return code from connection (see call_pipe)

986

returncode = connection.recv()

987

connection.close()

988

989

if returncode >= 0:

990

self.last_checker_status = returncode

991

self.last_checker_signal = None

992

if self.last_checker_status == 0:

445

if os.WIFEXITED(condition):

446

exitstatus = os.WEXITSTATUS(condition)

447

if exitstatus == 0:

993

448

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

994

449

vars(self))

995

450

self.checked_ok()

996

451

else:

997

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

452

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

453

vars(self))

998

454

else:

999

self.last_checker_status = -1

1000

self.last_checker_signal = -returncode

1001

455

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

1002

456

vars(self))

1003

return False

1004

1005

def checked_ok(self):

1006

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

1007

self.last_checked_ok = datetime.datetime.utcnow()

1008

self.last_checker_status = 0

1009

self.last_checker_signal = None

1010

self.bump_timeout()

1011

1012

def bump_timeout(self, timeout=None):

1013

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

457

458

def checked_ok(self, timeout=None):

459

"""Bump up the timeout for this client.

460

461

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

462

alive and well.

463

"""

1014

464

if timeout is None:

1015

465

timeout = self.timeout

1016

if self.disable_initiator_tag is not None:

1017

GLib.source_remove(self.disable_initiator_tag)

1018

self.disable_initiator_tag = None

1019

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

1020

self.disable_initiator_tag = GLib.timeout_add(

1021

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

1022

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

466

self.last_checked_ok = datetime.datetime.utcnow()

467

gobject.source_remove(self.disable_initiator_tag)

468

self.disable_initiator_tag = (gobject.timeout_add

469

(_timedelta_to_milliseconds

470

(timeout), self.disable))

471

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

1023

472

1024

473

def need_approval(self):

1025

474

self.last_approval_request = datetime.datetime.utcnow()

1030

479

If a checker already exists, leave it running and do

1031

480

nothing."""

1032

481

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

1033

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

1034

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

1035

# would inevitably timeout, since no checker would get a

1036

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

482

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

483

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

484

# client would inevitably timeout, since no checker would get

485

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

1037

486

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

1038

487

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

1039

488

# should be.

1040

489

1041

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

1042

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

1043

self.checker.join()

1044

self.checker = None

490

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

491

try:

492

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

493

except (AttributeError, OSError) as error:

494

if (isinstance(error, OSError)

495

and error.errno != errno.ECHILD):

496

raise error

497

else:

498

if pid:

499

logger.warning("Checker was a zombie")

500

gobject.source_remove(self.checker_callback_tag)

501

self.checker_callback(pid, status,

502

self.current_checker_command)

1045

503

# Start a new checker if needed

1046

504

if self.checker is None:

1047

# Escape attributes for the shell

1048

escaped_attrs = {

1049

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

1050

for attr in self.runtime_expansions }

1051

505

try:

1052

command = self.checker_command % escaped_attrs

1053

except TypeError as error:

1054

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

1055

self.checker_command,

1056

exc_info=error)

1057

return True # Try again later

506

# In case checker_command has exactly one % operator

507

command = self.checker_command % self.host

508

except TypeError:

509

# Escape attributes for the shell

510

escaped_attrs = dict(

511

(attr,

512

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

513

errors=

514

'replace')))

515

for attr in

516

self.runtime_expansions)

517

518

try:

519

command = self.checker_command % escaped_attrs

520

except TypeError as error:

521

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

522

' %s', self.checker_command, error)

523

return True # Try again later

1058

524

self.current_checker_command = command

1059

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

1060

self.name)

1061

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

1062

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

1063

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

1064

# always replaced by /dev/null.)

1065

# The exception is when not debugging but nevertheless

1066

# running in the foreground; use the previously

1067

# created wnull.

1068

popen_args = { "close_fds": True,

1069

"shell": True,

1070

"cwd": "/" }

1071

if (not self.server_settings["debug"]

1072

and self.server_settings["foreground"]):

1073

popen_args.update({"stdout": wnull,

1074

"stderr": wnull })

1075

pipe = multiprocessing.Pipe(duplex = False)

1076

self.checker = multiprocessing.Process(

1077

target = call_pipe,

1078

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

1079

kwargs = popen_args)

1080

self.checker.start()

1081

self.checker_callback_tag = GLib.io_add_watch(

1082

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

1083

self.checker_callback, pipe[0], command)

1084

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

525

try:

526

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

527

command, self.name)

528

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

529

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

530

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

531

# always replaced by /dev/null.)

532

self.checker = subprocess.Popen(command,

533

close_fds=True,

534

shell=True, cwd="/")

535

self.checker_callback_tag = (gobject.child_watch_add

536

(self.checker.pid,

537

self.checker_callback,

538

data=command))

539

# The checker may have completed before the gobject

540

# watch was added. Check for this.

541

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

542

if pid:

543

gobject.source_remove(self.checker_callback_tag)

544

self.checker_callback(pid, status, command)

545

except OSError as error:

546

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

547

error)

548

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

1085

549

return True

1086

550

1087

551

def stop_checker(self):

1088

552

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

1089

553

if self.checker_callback_tag:

1090

GLib.source_remove(self.checker_callback_tag)

554

gobject.source_remove(self.checker_callback_tag)

1091

555

self.checker_callback_tag = None

1092

556

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

1093

557

return

1094

558

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

1095

self.checker.terminate()

559

try:

560

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

561

#time.sleep(0.5)

562

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

563

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

564

except OSError as error:

565

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

566

raise

1096

567

self.checker = None

1097

568

1098

569

1099

def dbus_service_property(dbus_interface,

1100

signature="v",

1101

access="readwrite",

1102

byte_arrays=False):

570

def dbus_service_property(dbus_interface, signature="v",

571

access="readwrite", byte_arrays=False):

1103

572

"""Decorators for marking methods of a DBusObjectWithProperties to

1104

573

become properties on the D-Bus.

1105

574

1114

583

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

1115

584

if byte_arrays and signature != "ay":

1116

585

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

1117

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

1118

586

" signature %r" % signature)

1119

587

def decorator(func):

1120

588

func._dbus_is_property = True

1121

589

func._dbus_interface = dbus_interface

1126

594

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

1127

595

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

1128

596

return func

1129

1130

return decorator

1131

1132

1133

def dbus_interface_annotations(dbus_interface):

1134

"""Decorator for marking functions returning interface annotations

1135

1136

Usage:

1137

1138

@dbus_interface_annotations("org.example.Interface")

1139

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

1140

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

1141

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

1142

"false"}

1143

"""

1144

1145

def decorator(func):

1146

func._dbus_is_interface = True

1147

func._dbus_interface = dbus_interface

1148

func._dbus_name = dbus_interface

1149

return func

1150

1151

return decorator

1152

1153

1154

def dbus_annotations(annotations):

1155

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

1156

Usage:

1157

1158

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

1159

"org.freedesktop.DBus.Property."

1160

"EmitsChangedSignal": "false"})

1161

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

1162

access="r")

1163

def Property_dbus_property(self):

1164

return dbus.Boolean(False)

1165

1166

See also the DBusObjectWithAnnotations class.

1167

"""

1168

1169

def decorator(func):

1170

func._dbus_annotations = annotations

1171

return func

1172

1173

597

return decorator

1174

598

1175

599

1176

600

class DBusPropertyException(dbus.exceptions.DBusException):

1177

601

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

1178

602

"""

1179

pass

603

def __unicode__(self):

604

return unicode(str(self))

1180

605

1181

606

1182

607

class DBusPropertyAccessException(DBusPropertyException):

1191

616

pass

1192

617

1193

618

1194

class DBusObjectWithAnnotations(dbus.service.Object):

1195

"""A D-Bus object with annotations.

1196

1197

Classes inheriting from this can use the dbus_annotations

1198

decorator to add annotations to methods or signals.

1199

"""

1200

1201

@staticmethod

1202

def _is_dbus_thing(thing):

1203

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

1204

1205

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

1206

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

1207

"""

1208

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

1209

False)

1210

1211

def _get_all_dbus_things(self, thing):

1212

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

1213

"""

1214

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

1215

athing.__get__(self))

1216

for cls in self.__class__.__mro__

1217

for name, athing in

1218

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

1219

1220

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1221

out_signature = "s",

1222

path_keyword = 'object_path',

1223

connection_keyword = 'connection')

1224

def Introspect(self, object_path, connection):

1225

"""Overloading of standard D-Bus method.

1226

1227

Inserts annotation tags on methods and signals.

1228

"""

1229

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

1230

connection)

1231

try:

1232

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

1233

1234

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

1235

# Add annotation tags

1236

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

1237

for tag in if_tag.getElementsByTagName(typ):

1238

annots = dict()

1239

for name, prop in (self.

1240

_get_all_dbus_things(typ)):

1241

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

1242

and prop._dbus_interface

1243

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

1244

annots.update(getattr(

1245

prop, "_dbus_annotations", {}))

1246

for name, value in annots.items():

1247

ann_tag = document.createElement(

1248

"annotation")

1249

ann_tag.setAttribute("name", name)

1250

ann_tag.setAttribute("value", value)

1251

tag.appendChild(ann_tag)

1252

# Add interface annotation tags

1253

for annotation, value in dict(

1254

itertools.chain.from_iterable(

1255

annotations().items()

1256

for name, annotations

1257

in self._get_all_dbus_things("interface")

1258

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

1259

)).items():

1260

ann_tag = document.createElement("annotation")

1261

ann_tag.setAttribute("name", annotation)

1262

ann_tag.setAttribute("value", value)

1263

if_tag.appendChild(ann_tag)

1264

# Fix argument name for the Introspect method itself

1265

if (if_tag.getAttribute("name")

1266

== dbus.INTROSPECTABLE_IFACE):

1267

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

1268

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

1269

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

1270

if (arg.getAttribute("direction")

1271

== "out"):

1272

arg.setAttribute("name",

1273

"xml_data")

1274

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

1275

document.unlink()

1276

except (AttributeError, xml.dom.DOMException,

1277

xml.parsers.expat.ExpatError) as error:

1278

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

1279

exc_info=error)

1280

return xmlstring

1281

1282

1283

class DBusObjectWithProperties(DBusObjectWithAnnotations):

619

class DBusObjectWithProperties(dbus.service.Object):

1284

620

"""A D-Bus object with properties.

1285

621

1286

622

Classes inheriting from this can use the dbus_service_property

1288

624

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

1289

625

"""

1290

626

627

@staticmethod

628

def _is_dbus_property(obj):

629

return getattr(obj, "_dbus_is_property", False)

630

631

def _get_all_dbus_properties(self):

632

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

633

"""

634

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

635

for cls in self.__class__.__mro__

636

for name, prop in

637

inspect.getmembers(cls, self._is_dbus_property))

638

1291

639

def _get_dbus_property(self, interface_name, property_name):

1292

640

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

1293

641

property with the specified name and interface.

1294

642

"""

1295

for cls in self.__class__.__mro__:

1296

for name, value in inspect.getmembers(

1297

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

643

for cls in self.__class__.__mro__:

644

for name, value in (inspect.getmembers

645

(cls, self._is_dbus_property)):

1298

646

if (value._dbus_name == property_name

1299

647

and value._dbus_interface == interface_name):

1300

648

return value.__get__(self)

1301

649

1302

650

# No such property

1303

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

1304

self.dbus_object_path, interface_name, property_name))

1305

1306

@classmethod

1307

def _get_all_interface_names(cls):

1308

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

1309

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

1310

"_dbus_interface", None)

1311

for x in (inspect.getmro(cls))

1312

for attr in dir(x))

1313

if name is not None)

1314

1315

@dbus.service.method(dbus.PROPERTIES_IFACE,

1316

in_signature="ss",

651

raise DBusPropertyNotFound(self.dbus_object_path + ":"

652

+ interface_name + "."

653

+ property_name)

654

655

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

1317

656

out_signature="v")

1318

657

def Get(self, interface_name, property_name):

1319

658

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

1337

676

# The byte_arrays option is not supported yet on

1338

677

# signatures other than "ay".

1339

678

if prop._dbus_signature != "ay":

1340

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

1341

"'ay' signature {!r}"

1342

.format(prop._dbus_signature))

1343

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

1344

for byte in value))

679

raise ValueError

680

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

681

for byte in value))

1345

682

prop(value)

1346

683

1347

@dbus.service.method(dbus.PROPERTIES_IFACE,

1348

in_signature="s",

684

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

1349

685

out_signature="a{sv}")

1350

686

def GetAll(self, interface_name):

1351

687

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

1353

689

1354

690

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

1355

691

"""

1356

properties = {}

1357

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

692

all = {}

693

for name, prop in self._get_all_dbus_properties():

1358

694

if (interface_name

1359

695

and interface_name != prop._dbus_interface):

1360

696

# Interface non-empty but did not match

1364

700

continue

1365

701

value = prop()

1366

702

if not hasattr(value, "variant_level"):

1367

properties[name] = value

703

all[name] = value

1368

704

continue

1369

properties[name] = type(value)(

1370

value, variant_level = value.variant_level + 1)

1371

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

1372

1373

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

1374

def PropertiesChanged(self, interface_name, changed_properties,

1375

invalidated_properties):

1376

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

1377

standard.

1378

"""

1379

pass

705

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

706

value.variant_level+1)

707

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

1380

708

1381

709

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1382

710

out_signature="s",

1383

711

path_keyword='object_path',

1384

712

connection_keyword='connection')

1385

713

def Introspect(self, object_path, connection):

1386

"""Overloading of standard D-Bus method.

1387

1388

Inserts property tags and interface annotation tags.

714

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

1389

715

"""

1390

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1391

object_path,

1392

connection)

716

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

717

connection)

1393

718

try:

1394

719

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

1395

1396

720

def make_tag(document, name, prop):

1397

721

e = document.createElement("property")

1398

722

e.setAttribute("name", name)

1399

723

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

1400

724

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

1401

725

return e

1402

1403

726

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

1404

# Add property tags

1405

727

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

1406

728

for name, prop

1407

in self._get_all_dbus_things("property")

729

in self._get_all_dbus_properties()

1408

730

if prop._dbus_interface

1409

731

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

1410

732

if_tag.appendChild(tag)

1411

# Add annotation tags for properties

1412

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

1413

annots = dict()

1414

for name, prop in self._get_all_dbus_things(

1415

"property"):

1416

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

1417

and prop._dbus_interface

1418

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

1419

annots.update(getattr(

1420

prop, "_dbus_annotations", {}))

1421

for name, value in annots.items():

1422

ann_tag = document.createElement(

1423

"annotation")

1424

ann_tag.setAttribute("name", name)

1425

ann_tag.setAttribute("value", value)

1426

tag.appendChild(ann_tag)

1427

733

# Add the names to the return values for the

1428

734

# "org.freedesktop.DBus.Properties" methods

1429

735

if (if_tag.getAttribute("name")

1444

750

except (AttributeError, xml.dom.DOMException,

1445

751

xml.parsers.expat.ExpatError) as error:

1446

752

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

1447

exc_info=error)

1448

return xmlstring

1449

1450

try:

1451

dbus.OBJECT_MANAGER_IFACE

1452

except AttributeError:

1453

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

1454

1455

class DBusObjectWithObjectManager(DBusObjectWithAnnotations):

1456

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

1457

1458

Classes inheriting from this exposes the standard

1459

GetManagedObjects call and the InterfacesAdded and

1460

InterfacesRemoved signals on the standard

1461

"org.freedesktop.DBus.ObjectManager" interface.

1462

1463

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

1464

manually.

1465

"""

1466

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

1467

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

1468

def GetManagedObjects(self):

1469

"""This function must be overridden"""

1470

raise NotImplementedError()

1471

1472

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,

1473

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

1474

def InterfacesAdded(self, object_path, interfaces_and_properties):

1475

pass

1476

1477

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

1478

def InterfacesRemoved(self, object_path, interfaces):

1479

pass

1480

1481

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1482

out_signature = "s",

1483

path_keyword = 'object_path',

1484

connection_keyword = 'connection')

1485

def Introspect(self, object_path, connection):

1486

"""Overloading of standard D-Bus method.

1487

1488

Override return argument name of GetManagedObjects to be

1489

"objpath_interfaces_and_properties"

1490

"""

1491

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1492

object_path,

1493

connection)

1494

try:

1495

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

1496

1497

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

1498

# Fix argument name for the GetManagedObjects method

1499

if (if_tag.getAttribute("name")

1500

== dbus.OBJECT_MANAGER_IFACE):

1501

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

1502

if (cn.getAttribute("name")

1503

== "GetManagedObjects"):

1504

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

1505

if (arg.getAttribute("direction")

1506

== "out"):

1507

arg.setAttribute(

1508

"name",

1509

"objpath_interfaces"

1510

"_and_properties")

1511

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

1512

document.unlink()

1513

except (AttributeError, xml.dom.DOMException,

1514

xml.parsers.expat.ExpatError) as error:

1515

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

1516

exc_info = error)

1517

return xmlstring

1518

1519

def datetime_to_dbus(dt, variant_level=0):

753

error)

754

return xmlstring

755

756

757

def datetime_to_dbus (dt, variant_level=0):

1520

758

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

1521

759

if dt is None:

1522

760

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

1523

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

1524

1525

1526

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1527

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

1528

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

1529

interface names according to the "alt_interface_names" mapping.

1530

Usage:

1531

1532

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

1533

"net.example.AlternateInterface"})

1534

class SampleDBusObject(dbus.service.Object):

1535

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

1536

def SampleDBusMethod():

1537

pass

1538

1539

The above "SampleDBusMethod" on "SampleDBusObject" will be

1540

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

1541

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

1542

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

1543

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

1544

1545

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

1546

(from DBusObjectWithProperties) and interfaces (from the

1547

dbus_interface_annotations decorator).

761

return dbus.String(dt.isoformat(),

762

variant_level=variant_level)

763

764

class AlternateDBusNamesMetaclass(DBusObjectWithProperties

765

.__metaclass__):

766

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

767

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

1548

768

"""

1549

1550

def wrapper(cls):

1551

for orig_interface_name, alt_interface_name in (

1552

alt_interface_names.items()):

1553

attr = {}

1554

interface_names = set()

1555

# Go though all attributes of the class

1556

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

769

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

770

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

771

# methods, signals, or properties in them

772

for base in (b for b in bases

773

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

774

# Go though all attributes of the base class

775

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

1557

776

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

1558

777

# with the wrong interface name

1559

778

if (not hasattr(attribute, "_dbus_interface")

1560

or not attribute._dbus_interface.startswith(

1561

orig_interface_name)):

779

or not attribute._dbus_interface

780

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

1562

781

continue

1563

782

# Create an alternate D-Bus interface name based on

1564

783

# the current name

1565

alt_interface = attribute._dbus_interface.replace(

1566

orig_interface_name, alt_interface_name)

1567

interface_names.add(alt_interface)

784

alt_interface = (attribute._dbus_interface

785

.replace("se.recompile.Mandos",

786

"se.bsnet.fukt.Mandos"))

1568

787

# Is this a D-Bus signal?

1569

788

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

1570

# Extract the original non-method undecorated

1571

# function by black magic

1572

if sys.version_info.major == 2:

1573

nonmethod_func = (dict(

789

# Extract the original non-method function by

790

# black magic

791

nonmethod_func = (dict(

1574

792

zip(attribute.func_code.co_freevars,

1575

attribute.__closure__))

1576

["func"].cell_contents)

1577

else:

1578

nonmethod_func = (dict(

1579

zip(attribute.__code__.co_freevars,

1580

attribute.__closure__))

1581

["func"].cell_contents)

793

attribute.__closure__))["func"]

794

.cell_contents)

1582

795

# Create a new, but exactly alike, function

1583

796

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

1584

797

# with the alternate D-Bus interface name

1585

new_function = copy_function(nonmethod_func)

1586

new_function = (dbus.service.signal(

1587

alt_interface,

1588

attribute._dbus_signature)(new_function))

1589

# Copy annotations, if any

1590

try:

1591

new_function._dbus_annotations = dict(

1592

attribute._dbus_annotations)

1593

except AttributeError:

1594

pass

798

new_function = (dbus.service.signal

799

(alt_interface,

800

attribute._dbus_signature)

801

(types.FunctionType(

802

nonmethod_func.func_code,

803

nonmethod_func.func_globals,

804

nonmethod_func.func_name,

805

nonmethod_func.func_defaults,

806

nonmethod_func.func_closure)))

1595

807

# Define a creator of a function to call both the

1596

# original and alternate functions, so both the

1597

# original and alternate signals gets sent when

1598

# the function is called

808

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

809

# signals gets sent when the function is called

1599

810

def fixscope(func1, func2):

1600

811

"""This function is a scope container to pass

1601

812

func1 and func2 to the "call_both" function

1602

813

outside of its arguments"""

1603

1604

@functools.wraps(func2)

1605

814

def call_both(*args, **kwargs):

1606

815

"""This function will emit two D-Bus

1607

816

signals by calling func1 and func2"""

1608

817

func1(*args, **kwargs)

1609

818

func2(*args, **kwargs)

1610

# Make wrapper function look like a D-Bus signal

1611

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

1612

if name.startswith("_dbus_"):

1613

setattr(call_both, name, attr)

1614

1615

819

return call_both

1616

820

# Create the "call_both" function and add it to

1617

821

# the class

1618

attr[attrname] = fixscope(attribute, new_function)

822

attr[attrname] = fixscope(attribute,

823

new_function)

1619

824

# Is this a D-Bus method?

1620

825

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

1621

826

# Create a new, but exactly alike, function

1622

827

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

1623

828

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

1624

829

# to the class.

1625

attr[attrname] = (

1626

dbus.service.method(

1627

alt_interface,

1628

attribute._dbus_in_signature,

1629

attribute._dbus_out_signature)

1630

(copy_function(attribute)))

1631

# Copy annotations, if any

1632

try:

1633

attr[attrname]._dbus_annotations = dict(

1634

attribute._dbus_annotations)

1635

except AttributeError:

1636

pass

830

attr[attrname] = (dbus.service.method

831

(alt_interface,

832

attribute._dbus_in_signature,

833

attribute._dbus_out_signature)

834

(types.FunctionType

835

(attribute.func_code,

836

attribute.func_globals,

837

attribute.func_name,

838

attribute.func_defaults,

839

attribute.func_closure)))

1637

840

# Is this a D-Bus property?

1638

841

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

1639

842

# Create a new, but exactly alike, function

1640

843

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

1641

844

# property with the alternate D-Bus interface

1642

845

# name. Add it to the class.

1643

attr[attrname] = (dbus_service_property(

1644

alt_interface, attribute._dbus_signature,

1645

attribute._dbus_access,

1646

attribute._dbus_get_args_options

1647

["byte_arrays"])

1648

(copy_function(attribute)))

1649

# Copy annotations, if any

1650

try:

1651

attr[attrname]._dbus_annotations = dict(

1652

attribute._dbus_annotations)

1653

except AttributeError:

1654

pass

1655

# Is this a D-Bus interface?

1656

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

1657

# Create a new, but exactly alike, function

1658

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

1659

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

1660

# to the class.

1661

attr[attrname] = (

1662

dbus_interface_annotations(alt_interface)

1663

(copy_function(attribute)))

1664

if deprecate:

1665

# Deprecate all alternate interfaces

1666

iname="_AlternateDBusNames_interface_annotation{}"

1667

for interface_name in interface_names:

1668

1669

@dbus_interface_annotations(interface_name)

1670

def func(self):

1671

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

1672

"true" }

1673

# Find an unused name

1674

for aname in (iname.format(i)

1675

for i in itertools.count()):

1676

if aname not in attr:

1677

attr[aname] = func

1678

break

1679

if interface_names:

1680

# Replace the class with a new subclass of it with

1681

# methods, signals, etc. as created above.

1682

if sys.version_info.major == 2:

1683

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

1684

(cls, ), attr)

1685

else:

1686

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

1687

(cls, ), attr)

1688

return cls

1689

1690

return wrapper

1691

1692

1693

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

1694

"se.bsnet.fukt.Mandos"})

846

attr[attrname] = (dbus_service_property

847

(alt_interface,

848

attribute._dbus_signature,

849

attribute._dbus_access,

850

attribute

851

._dbus_get_args_options

852

["byte_arrays"])

853

(types.FunctionType

854

(attribute.func_code,

855

attribute.func_globals,

856

attribute.func_name,

857

attribute.func_defaults,

858

attribute.func_closure)))

859

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

860

1695

861

class ClientDBus(Client, DBusObjectWithProperties):

1696

862

"""A Client class using D-Bus

1697

863

1701

867

"""

1702

868

1703

869

runtime_expansions = (Client.runtime_expansions

1704

+ ("dbus_object_path", ))

1705

1706

_interface = "se.recompile.Mandos.Client"

870

+ ("dbus_object_path",))

1707

871

1708

872

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

1709

873

1710

874

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

875

self._approvals_pending = 0

1711

876

self.bus = bus

1712

877

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

1713

878

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

1714

879

# the D-Bus

1715

client_object_name = str(self.name).translate(

880

client_object_name = unicode(self.name).translate(

1716

881

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

1717

882

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

1718

self.dbus_object_path = dbus.ObjectPath(

1719

"/clients/" + client_object_name)

883

self.dbus_object_path = (dbus.ObjectPath

884

("/clients/" + client_object_name))

1720

885

DBusObjectWithProperties.__init__(self, self.bus,

1721

886

self.dbus_object_path)

1722

1723

def notifychangeproperty(transform_func, dbus_name,

1724

type_func=lambda x: x,

1725

variant_level=1,

1726

invalidate_only=False,

1727

_interface=_interface):

887

888

def notifychangeproperty(transform_func,

889

dbus_name, type_func=lambda x: x,

890

variant_level=1):

1728

891

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

1729

892

its changes to DBus.

1730

1731

transform_fun: Function that takes a value and a variant_level

1732

and transforms it to a D-Bus type.

893

894

transform_fun: Function that takes a value and transforms it

895

to a D-Bus type.

1733

896

dbus_name: D-Bus name of the variable

1734

897

type_func: Function that transform the value before sending it

1735

898

to the D-Bus. Default: no transform

1736

899

variant_level: D-Bus variant level. Default: 1

1737

900

"""

1738

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

1739

901

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

1740

902

def setter(self, value):

1741

903

if hasattr(self, "dbus_object_path"):

1742

904

if (not hasattr(self, attrname) or

1743

905

type_func(getattr(self, attrname, None))

1744

906

!= type_func(value)):

1745

if invalidate_only:

1746

self.PropertiesChanged(

1747

_interface, dbus.Dictionary(),

1748

dbus.Array((dbus_name, )))

1749

else:

1750

dbus_value = transform_func(

1751

type_func(value),

1752

variant_level = variant_level)

1753

self.PropertyChanged(dbus.String(dbus_name),

1754

dbus_value)

1755

self.PropertiesChanged(

1756

_interface,

1757

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

1758

dbus_value }),

1759

dbus.Array())

907

dbus_value = transform_func(type_func(value),

908

variant_level)

909

self.PropertyChanged(dbus.String(dbus_name),

910

dbus_value)

1760

911

setattr(self, attrname, value)

1761

912

1762

913

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

1763

914

915

1764

916

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1765

917

approvals_pending = notifychangeproperty(dbus.Boolean,

1766

918

"ApprovalPending",

1768

920

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

1769

921

last_enabled = notifychangeproperty(datetime_to_dbus,

1770

922

"LastEnabled")

1771

checker = notifychangeproperty(

1772

dbus.Boolean, "CheckerRunning",

1773

type_func = lambda checker: checker is not None)

923

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

924

type_func = lambda checker:

925

checker is not None)

1774

926

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1775

927

"LastCheckedOK")

1776

last_checker_status = notifychangeproperty(dbus.Int16,

1777

"LastCheckerStatus")

1778

928

last_approval_request = notifychangeproperty(

1779

929

datetime_to_dbus, "LastApprovalRequest")

1780

930

approved_by_default = notifychangeproperty(dbus.Boolean,

1781

931

"ApprovedByDefault")

1782

approval_delay = notifychangeproperty(

1783

dbus.UInt64, "ApprovalDelay",

1784

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

932

approval_delay = notifychangeproperty(dbus.UInt16,

933

"ApprovalDelay",

934

type_func =

935

_timedelta_to_milliseconds)

1785

936

approval_duration = notifychangeproperty(

1786

dbus.UInt64, "ApprovalDuration",

1787

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

937

dbus.UInt16, "ApprovalDuration",

938

type_func = _timedelta_to_milliseconds)

1788

939

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

1789

timeout = notifychangeproperty(

1790

dbus.UInt64, "Timeout",

1791

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

940

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

941

type_func =

942

_timedelta_to_milliseconds)

1792

943

extended_timeout = notifychangeproperty(

1793

dbus.UInt64, "ExtendedTimeout",

1794

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

1795

interval = notifychangeproperty(

1796

dbus.UInt64, "Interval",

1797

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

944

dbus.UInt16, "ExtendedTimeout",

945

type_func = _timedelta_to_milliseconds)

946

interval = notifychangeproperty(dbus.UInt16,

947

"Interval",

948

type_func =

949

_timedelta_to_milliseconds)

1798

950

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

1799

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

1800

invalidate_only=True)

1801

951

1802

952

del notifychangeproperty

1803

953

1810

960

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

1811

961

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

1812

962

1813

def checker_callback(self, source, condition,

1814

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

1815

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

1816

connection, command, *args,

1817

**kwargs)

1818

exitstatus = self.last_checker_status

1819

if exitstatus >= 0:

963

def checker_callback(self, pid, condition, command,

964

*args, **kwargs):

965

self.checker_callback_tag = None

966

self.checker = None

967

if os.WIFEXITED(condition):

968

exitstatus = os.WEXITSTATUS(condition)

1820

969

# Emit D-Bus signal

1821

970

self.CheckerCompleted(dbus.Int16(exitstatus),

1822

# This is specific to GNU libC

1823

dbus.Int64(exitstatus << 8),

971

dbus.Int64(condition),

1824

972

dbus.String(command))

1825

973

else:

1826

974

# Emit D-Bus signal

1827

975

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

1828

dbus.Int64(

1829

# This is specific to GNU libC

1830

(exitstatus << 8)

1831

| self.last_checker_signal),

976

dbus.Int64(condition),

1832

977

dbus.String(command))

1833

return ret

978

979

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

980

*args, **kwargs)

1834

981

1835

982

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

1836

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

983

old_checker = self.checker

984

if self.checker is not None:

985

old_checker_pid = self.checker.pid

986

else:

987

old_checker_pid = None

1837

988

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

1838

989

# Only if new checker process was started

1839

990

if (self.checker is not None

1843

994

return r

1844

995

1845

996

def _reset_approved(self):

1846

self.approved = None

997

self._approved = None

1847

998

return False

1848

999

1849

1000

def approve(self, value=True):

1850

self.approved = value

1851

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

1852

* 1000), self._reset_approved)

1853

1001

self.send_changedstate()

1002

self._approved = value

1003

gobject.timeout_add(_timedelta_to_milliseconds

1004

(self.approval_duration),

1005

self._reset_approved)

1006

1854

1007

1855

1008

## D-Bus methods, signals & properties

1856

1857

## Interfaces

1009

_interface = "se.recompile.Mandos.Client"

1858

1010

1859

1011

## Signals

1860

1012

1871

1023

pass

1872

1024

1873

1025

# PropertyChanged - signal

1874

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

1875

1026

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

1876

1027

def PropertyChanged(self, property, value):

1877

1028

"D-Bus signal"

1911

1062

self.checked_ok()

1912

1063

1913

1064

# Enable - method

1914

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

1915

1065

@dbus.service.method(_interface)

1916

1066

def Enable(self):

1917

1067

"D-Bus method"

1918

1068

self.enable()

1919

1069

1920

1070

# StartChecker - method

1921

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

1922

1071

@dbus.service.method(_interface)

1923

1072

def StartChecker(self):

1924

1073

"D-Bus method"

1925

1074

self.start_checker()

1926

1075

1927

1076

# Disable - method

1928

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

1929

1077

@dbus.service.method(_interface)

1930

1078

def Disable(self):

1931

1079

"D-Bus method"

1932

1080

self.disable()

1933

1081

1934

1082

# StopChecker - method

1935

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

1936

1083

@dbus.service.method(_interface)

1937

1084

def StopChecker(self):

1938

1085

self.stop_checker()

1945

1092

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

1946

1093

1947

1094

# ApprovedByDefault - property

1948

@dbus_service_property(_interface,

1949

signature="b",

1095

@dbus_service_property(_interface, signature="b",

1950

1096

access="readwrite")

1951

1097

def ApprovedByDefault_dbus_property(self, value=None):

1952

1098

if value is None: # get

1954

1100

self.approved_by_default = bool(value)

1955

1101

1956

1102

# ApprovalDelay - property

1957

@dbus_service_property(_interface,

1958

signature="t",

1103

@dbus_service_property(_interface, signature="t",

1959

1104

access="readwrite")

1960

1105

def ApprovalDelay_dbus_property(self, value=None):

1961

1106

if value is None: # get

1962

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

1963

* 1000)

1107

return dbus.UInt64(self.approval_delay_milliseconds())

1964

1108

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

1965

1109

1966

1110

# ApprovalDuration - property

1967

@dbus_service_property(_interface,

1968

signature="t",

1111

@dbus_service_property(_interface, signature="t",

1969

1112

access="readwrite")

1970

1113

def ApprovalDuration_dbus_property(self, value=None):

1971

1114

if value is None: # get

1972

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

1973

* 1000)

1115

return dbus.UInt64(_timedelta_to_milliseconds(

1116

self.approval_duration))

1974

1117

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

1975

1118

1976

1119

# Name - property

1977

@dbus_annotations(

1978

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

1979

1120

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

1980

1121

def Name_dbus_property(self):

1981

1122

return dbus.String(self.name)

1982

1123

1983

1124

# Fingerprint - property

1984

@dbus_annotations(

1985

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

1986

1125

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

1987

1126

def Fingerprint_dbus_property(self):

1988

1127

return dbus.String(self.fingerprint)

1989

1128

1990

1129

# Host - property

1991

@dbus_service_property(_interface,

1992

signature="s",

1130

@dbus_service_property(_interface, signature="s",

1993

1131

access="readwrite")

1994

1132

def Host_dbus_property(self, value=None):

1995

1133

if value is None: # get

1996

1134

return dbus.String(self.host)

1997

self.host = str(value)

1135

self.host = value

1998

1136

1999

1137

# Created - property

2000

@dbus_annotations(

2001

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

2002

1138

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

2003

1139

def Created_dbus_property(self):

2004

return datetime_to_dbus(self.created)

1140

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

2005

1141

2006

1142

# LastEnabled - property

2007

1143

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

2009

1145

return datetime_to_dbus(self.last_enabled)

2010

1146

2011

1147

# Enabled - property

2012

@dbus_service_property(_interface,

2013

signature="b",

1148

@dbus_service_property(_interface, signature="b",

2014

1149

access="readwrite")

2015

1150

def Enabled_dbus_property(self, value=None):

2016

1151

if value is None: # get

2021

1156

self.disable()

2022

1157

2023

1158

# LastCheckedOK - property

2024

@dbus_service_property(_interface,

2025

signature="s",

1159

@dbus_service_property(_interface, signature="s",

2026

1160

access="readwrite")

2027

1161

def LastCheckedOK_dbus_property(self, value=None):

2028

1162

if value is not None:

2030

1164

return

2031

1165

return datetime_to_dbus(self.last_checked_ok)

2032

1166

2033

# LastCheckerStatus - property

2034

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

2035

def LastCheckerStatus_dbus_property(self):

2036

return dbus.Int16(self.last_checker_status)

2037

2038

1167

# Expires - property

2039

1168

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

2040

1169

def Expires_dbus_property(self):

2046

1175

return datetime_to_dbus(self.last_approval_request)

2047

1176

2048

1177

# Timeout - property

2049

@dbus_service_property(_interface,

2050

signature="t",

1178

@dbus_service_property(_interface, signature="t",

2051

1179

access="readwrite")

2052

1180

def Timeout_dbus_property(self, value=None):

2053

1181

if value is None: # get

2054

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

2055

old_timeout = self.timeout

1182

return dbus.UInt64(self.timeout_milliseconds())

2056

1183

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

2057

# Reschedule disabling

2058

if self.enabled:

2059

now = datetime.datetime.utcnow()

2060

self.expires += self.timeout - old_timeout

2061

if self.expires <= now:

2062

# The timeout has passed

2063

self.disable()

2064

else:

2065

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

2066

is None):

2067

return

2068

GLib.source_remove(self.disable_initiator_tag)

2069

self.disable_initiator_tag = GLib.timeout_add(

2070

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

2071

self.disable)

1184

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

1185

return

1186

# Reschedule timeout

1187

gobject.source_remove(self.disable_initiator_tag)

1188

self.disable_initiator_tag = None

1189

self.expires = None

1190

time_to_die = (self.

1191

_timedelta_to_milliseconds((self

1192

.last_checked_ok

1193

+ self.timeout)

1194

- datetime.datetime

1195

.utcnow()))

1196

if time_to_die <= 0:

1197

# The timeout has passed

1198

self.disable()

1199

else:

1200

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

1201

+ datetime.timedelta(milliseconds =

1202

time_to_die))

1203

self.disable_initiator_tag = (gobject.timeout_add

1204

(time_to_die, self.disable))

2072

1205

2073

1206

# ExtendedTimeout - property

2074

@dbus_service_property(_interface,

2075

signature="t",

1207

@dbus_service_property(_interface, signature="t",

2076

1208

access="readwrite")

2077

1209

def ExtendedTimeout_dbus_property(self, value=None):

2078

1210

if value is None: # get

2079

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

2080

* 1000)

1211

return dbus.UInt64(self.extended_timeout_milliseconds())

2081

1212

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

2082

1213

2083

1214

# Interval - property

2084

@dbus_service_property(_interface,

2085

signature="t",

1215

@dbus_service_property(_interface, signature="t",

2086

1216

access="readwrite")

2087

1217

def Interval_dbus_property(self, value=None):

2088

1218

if value is None: # get

2089

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

1219

return dbus.UInt64(self.interval_milliseconds())

2090

1220

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

2091

1221

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

2092

1222

return

2093

if self.enabled:

2094

# Reschedule checker run

2095

GLib.source_remove(self.checker_initiator_tag)

2096

self.checker_initiator_tag = GLib.timeout_add(

2097

value, self.start_checker)

2098

self.start_checker() # Start one now, too

1223

# Reschedule checker run

1224

gobject.source_remove(self.checker_initiator_tag)

1225

self.checker_initiator_tag = (gobject.timeout_add

1226

(value, self.start_checker))

1227

self.start_checker() # Start one now, too

2099

1228

2100

1229

# Checker - property

2101

@dbus_service_property(_interface,

2102

signature="s",

1230

@dbus_service_property(_interface, signature="s",

2103

1231

access="readwrite")

2104

1232

def Checker_dbus_property(self, value=None):

2105

1233

if value is None: # get

2106

1234

return dbus.String(self.checker_command)

2107

self.checker_command = str(value)

1235

self.checker_command = value

2108

1236

2109

1237

# CheckerRunning - property

2110

@dbus_service_property(_interface,

2111

signature="b",

1238

@dbus_service_property(_interface, signature="b",

2112

1239

access="readwrite")

2113

1240

def CheckerRunning_dbus_property(self, value=None):

2114

1241

if value is None: # get

2119

1246

self.stop_checker()

2120

1247

2121

1248

# ObjectPath - property

2122

@dbus_annotations(

2123

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

2124

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

2125

1249

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

2126

1250

def ObjectPath_dbus_property(self):

2127

1251

return self.dbus_object_path # is already a dbus.ObjectPath

2128

1252

2129

1253

# Secret = property

2130

@dbus_annotations(

2131

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

2132

"invalidates"})

2133

@dbus_service_property(_interface,

2134

signature="ay",

2135

access="write",

2136

byte_arrays=True)

1254

@dbus_service_property(_interface, signature="ay",

1255

access="write", byte_arrays=True)

2137

1256

def Secret_dbus_property(self, value):

2138

self.secret = bytes(value)

1257

self.secret = str(value)

2139

1258

2140

1259

del _interface

2141

1260

2145

1264

self._pipe = child_pipe

2146

1265

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

2147

1266

if not self._pipe.recv():

2148

raise KeyError(fpr)

1267

raise KeyError()

2149

1268

2150

1269

def __getattribute__(self, name):

2151

if name == '_pipe':

1270

if(name == '_pipe'):

2152

1271

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

2153

1272

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

2154

1273

data = self._pipe.recv()

2155

1274

if data[0] == 'data':

2156

1275

return data[1]

2157

1276

if data[0] == 'function':

2158

2159

1277

def func(*args, **kwargs):

2160

1278

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

2161

1279

return self._pipe.recv()[1]

2162

2163

1280

return func

2164

1281

2165

1282

def __setattr__(self, name, value):

2166

if name == '_pipe':

1283

if(name == '_pipe'):

2167

1284

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

2168

1285

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

2169

1286

1287

class ClientDBusTransitional(ClientDBus):

1288

__metaclass__ = AlternateDBusNamesMetaclass

2170

1289

2171

1290

class ClientHandler(socketserver.BaseRequestHandler, object):

2172

1291

"""A class to handle client connections.

2177

1296

def handle(self):

2178

1297

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

2179

1298

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

2180

str(self.client_address))

1299

unicode(self.client_address))

2181

1300

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

2182

1301

self.server.child_pipe.fileno())

2183

1302

2184

session = gnutls.ClientSession(self.request)

1303

session = (gnutls.connection

1304

.ClientSession(self.request,

1305

gnutls.connection

1306

.X509Credentials()))

1307

1308

# Note: gnutls.connection.X509Credentials is really a

1309

# generic GnuTLS certificate credentials object so long as

1310

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

1311

# here despite using OpenPGP certificates.

2185

1312

2186

1313

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

2187

1314

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

2191

1318

priority = self.server.gnutls_priority

2192

1319

if priority is None:

2193

1320

priority = "NORMAL"

2194

gnutls.priority_set_direct(session._c_object,

2195

priority.encode("utf-8"),

2196

None)

1321

(gnutls.library.functions

1322

.gnutls_priority_set_direct(session._c_object,

1323

priority, None))

2197

1324

2198

1325

# Start communication using the Mandos protocol

2199

1326

# Get protocol number

2201

1328

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

2202

1329

try:

2203

1330

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

2204

raise RuntimeError(line)

1331

raise RuntimeError

2205

1332

except (ValueError, IndexError, RuntimeError) as error:

2206

1333

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

2207

1334

return

2209

1336

# Start GnuTLS connection

2210

1337

try:

2211

1338

session.handshake()

2212

except gnutls.Error as error:

1339

except gnutls.errors.GNUTLSError as error:

2213

1340

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

2214

1341

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

2215

1342

# established. Just abandon the request.

2219

1346

approval_required = False

2220

1347

try:

2221

1348

try:

2222

fpr = self.fingerprint(

2223

self.peer_certificate(session))

2224

except (TypeError, gnutls.Error) as error:

1349

fpr = self.fingerprint(self.peer_certificate

1350

(session))

1351

except (TypeError,

1352

gnutls.errors.GNUTLSError) as error:

2225

1353

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

2226

1354

return

2227

1355

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

2240

1368

while True:

2241

1369

if not client.enabled:

2242

1370

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

2243

client.name)

1371

client.name)

2244

1372

if self.server.use_dbus:

2245

1373

# Emit D-Bus signal

2246

1374

client.Rejected("Disabled")

2247

1375

return

2248

1376

2249

if client.approved or not client.approval_delay:

1377

if client._approved or not client.approval_delay:

2250

1378

#We are approved or approval is disabled

2251

1379

break

2252

elif client.approved is None:

1380

elif client._approved is None:

2253

1381

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

2254

1382

client.name)

2255

1383

if self.server.use_dbus:

2256

1384

# Emit D-Bus signal

2257

1385

client.NeedApproval(

2258

client.approval_delay.total_seconds()

2259

* 1000, client.approved_by_default)

1386

client.approval_delay_milliseconds(),

1387

client.approved_by_default)

2260

1388

else:

2261

1389

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

2262

1390

client.name)

2268

1396

#wait until timeout or approved

2269

1397

time = datetime.datetime.now()

2270

1398

client.changedstate.acquire()

2271

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

1399

(client.changedstate.wait

1400

(float(client._timedelta_to_milliseconds(delay)

1401

/ 1000)))

2272

1402

client.changedstate.release()

2273

1403

time2 = datetime.datetime.now()

2274

1404

if (time2 - time) >= delay:

2285

1415

else:

2286

1416

delay -= time2 - time

2287

1417

2288

try:

2289

session.send(client.secret)

2290

except gnutls.Error as error:

2291

logger.warning("gnutls send failed",

2292

exc_info = error)

2293

return

1418

sent_size = 0

1419

while sent_size < len(client.secret):

1420

try:

1421

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

1422

except gnutls.errors.GNUTLSError as error:

1423

logger.warning("gnutls send failed")

1424

return

1425

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

1426

sent, len(client.secret)

1427

- (sent_size + sent))

1428

sent_size += sent

2294

1429

2295

1430

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

2296

1431

# bump the timeout using extended_timeout

2297

client.bump_timeout(client.extended_timeout)

1432

client.checked_ok(client.extended_timeout)

2298

1433

if self.server.use_dbus:

2299

1434

# Emit D-Bus signal

2300

1435

client.GotSecret()

2304

1439

client.approvals_pending -= 1

2305

1440

try:

2306

1441

session.bye()

2307

except gnutls.Error as error:

2308

logger.warning("GnuTLS bye failed",

2309

exc_info=error)

1442

except gnutls.errors.GNUTLSError as error:

1443

logger.warning("GnuTLS bye failed")

2310

1444

2311

1445

@staticmethod

2312

1446

def peer_certificate(session):

2313

1447

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

2314

1448

# If not an OpenPGP certificate...

2315

if (gnutls.certificate_type_get(session._c_object)

2316

!= gnutls.CRT_OPENPGP):

2317

# ...return invalid data

2318

return b""

1449

if (gnutls.library.functions

1450

.gnutls_certificate_type_get(session._c_object)

1451

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1452

# ...do the normal thing

1453

return session.peer_certificate

2319

1454

list_size = ctypes.c_uint(1)

2320

cert_list = (gnutls.certificate_get_peers

1455

cert_list = (gnutls.library.functions

1456

.gnutls_certificate_get_peers

2321

1457

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

2322

1458

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

2323

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

1459

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

1460

" certificate")

2324

1461

if list_size.value == 0:

2325

1462

return None

2326

1463

cert = cert_list[0]

2330

1467

def fingerprint(openpgp):

2331

1468

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

2332

1469

# New GnuTLS "datum" with the OpenPGP public key

2333

datum = gnutls.datum_t(

2334

ctypes.cast(ctypes.c_char_p(openpgp),

2335

ctypes.POINTER(ctypes.c_ubyte)),

2336

ctypes.c_uint(len(openpgp)))

1470

datum = (gnutls.library.types

1471

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

1472

ctypes.POINTER

1473

(ctypes.c_ubyte)),

1474

ctypes.c_uint(len(openpgp))))

2337

1475

# New empty GnuTLS certificate

2338

crt = gnutls.openpgp_crt_t()

2339

gnutls.openpgp_crt_init(ctypes.byref(crt))

1476

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1477

(gnutls.library.functions

1478

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

2340

1479

# Import the OpenPGP public key into the certificate

2341

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

2342

gnutls.OPENPGP_FMT_RAW)

1480

(gnutls.library.functions

1481

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

1482

gnutls.library.constants

1483

.GNUTLS_OPENPGP_FMT_RAW))

2343

1484

# Verify the self signature in the key

2344

1485

crtverify = ctypes.c_uint()

2345

gnutls.openpgp_crt_verify_self(crt, 0,

2346

ctypes.byref(crtverify))

1486

(gnutls.library.functions

1487

.gnutls_openpgp_crt_verify_self(crt, 0,

1488

ctypes.byref(crtverify)))

2347

1489

if crtverify.value != 0:

2348

gnutls.openpgp_crt_deinit(crt)

2349

raise gnutls.CertificateSecurityError("Verify failed")

1490

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1491

raise (gnutls.errors.CertificateSecurityError

1492

("Verify failed"))

2350

1493

# New buffer for the fingerprint

2351

1494

buf = ctypes.create_string_buffer(20)

2352

1495

buf_len = ctypes.c_size_t()

2353

1496

# Get the fingerprint from the certificate into the buffer

2354

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

2355

ctypes.byref(buf_len))

1497

(gnutls.library.functions

1498

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

1499

ctypes.byref(buf_len)))

2356

1500

# Deinit the certificate

2357

gnutls.openpgp_crt_deinit(crt)

1501

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

2358

1502

# Convert the buffer to a Python bytestring

2359

1503

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

2360

1504

# Convert the bytestring to hexadecimal notation

2361

hex_fpr = binascii.hexlify(fpr).upper()

1505

hex_fpr = ''.join("%02X" % ord(char) for char in fpr)

2362

1506

return hex_fpr

2363

1507

2364

1508

2365

1509

class MultiprocessingMixIn(object):

2366

1510

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

2367

2368

1511

def sub_process_main(self, request, address):

2369

1512

try:

2370

1513

self.finish_request(request, address)

2371

except Exception:

1514

except:

2372

1515

self.handle_error(request, address)

2373

1516

self.close_request(request)

2374

1517

2375

1518

def process_request(self, request, address):

2376

1519

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

2377

1520

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

2378

args = (request, address))

1521

args = (request,

1522

address))

2379

1523

proc.start()

2380

1524

return proc

2381

1525

2382

1526

2383

1527

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

2384

1528

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

2385

2386

1529

def process_request(self, request, client_address):

2387

1530

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

2388

1531

2397

1540

2398

1541

def add_pipe(self, parent_pipe, proc):

2399

1542

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

2400

raise NotImplementedError()

1543

raise NotImplementedError

2401

1544

2402

1545

2403

1546

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

2409

1552

interface: None or a network interface name (string)

2410

1553

use_ipv6: Boolean; to use IPv6 or not

2411

1554

"""

2412

2413

1555

def __init__(self, server_address, RequestHandlerClass,

2414

interface=None,

2415

use_ipv6=True,

2416

socketfd=None):

2417

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

2418

creating a new one with socket.socket().

2419

"""

1556

interface=None, use_ipv6=True):

2420

1557

self.interface = interface

2421

1558

if use_ipv6:

2422

1559

self.address_family = socket.AF_INET6

2423

if socketfd is not None:

2424

# Save the file descriptor

2425

self.socketfd = socketfd

2426

# Save the original socket.socket() function

2427

self.socket_socket = socket.socket

2428

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

2429

#

2430

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

2431

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

2432

# patching socket.socket.)

2433

#

2434

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

2435

@functools.wraps(socket.socket)

2436

def socket_wrapper(*args, **kwargs):

2437

# Restore original function so subsequent calls are

2438

# not affected.

2439

socket.socket = self.socket_socket

2440

del self.socket_socket

2441

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

2442

# saved file descriptor.

2443

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

2444

# Replace socket.socket() function with wrapper

2445

socket.socket = socket_wrapper

2446

# The socketserver.TCPServer.__init__ will call

2447

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

2448

# socket_wrapper(), if socketfd was set.

2449

1560

socketserver.TCPServer.__init__(self, server_address,

2450

1561

RequestHandlerClass)

2451

2452

1562

def server_bind(self):

2453

1563

"""This overrides the normal server_bind() function

2454

1564

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

2455

1565

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

2456

global SO_BINDTODEVICE

2457

1566

if self.interface is not None:

2458

1567

if SO_BINDTODEVICE is None:

2459

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

2460

# common enough.

2461

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

2462

SO_BINDTODEVICE = 25

2463

try:

2464

self.socket.setsockopt(

2465

socket.SOL_SOCKET, SO_BINDTODEVICE,

2466

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

2467

except socket.error as error:

2468

if error.errno == errno.EPERM:

2469

logger.error("No permission to bind to"

2470

" interface %s", self.interface)

2471

elif error.errno == errno.ENOPROTOOPT:

2472

logger.error("SO_BINDTODEVICE not available;"

2473

" cannot bind to interface %s",

2474

self.interface)

2475

elif error.errno == errno.ENODEV:

2476

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

2477

" cannot bind", self.interface)

2478

else:

2479

raise

1568

logger.error("SO_BINDTODEVICE does not exist;"

1569

" cannot bind to interface %s",

1570

self.interface)

1571

else:

1572

try:

1573

self.socket.setsockopt(socket.SOL_SOCKET,

1574

SO_BINDTODEVICE,

1575

str(self.interface

1576

+ '\0'))

1577

except socket.error as error:

1578

if error[0] == errno.EPERM:

1579

logger.error("No permission to"

1580

" bind to interface %s",

1581

self.interface)

1582

elif error[0] == errno.ENOPROTOOPT:

1583

logger.error("SO_BINDTODEVICE not available;"

1584

" cannot bind to interface %s",

1585

self.interface)

1586

else:

1587

raise

2480

1588

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

2481

1589

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

2482

1590

if not self.server_address[0]:

2483

1591

if self.address_family == socket.AF_INET6:

2484

1592

any_address = "::" # in6addr_any

2485

1593

else:

2486

any_address = "0.0.0.0" # INADDR_ANY

1594

any_address = socket.INADDR_ANY

2487

1595

self.server_address = (any_address,

2488

1596

self.server_address[1])

2489

1597

elif not self.server_address[1]:

2490

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

1598

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

1599

0)

2491

1600

# if self.interface:

2492

1601

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

2493

1602

# 0, # port

2505

1614

gnutls_priority GnuTLS priority string

2506

1615

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

2507

1616

2508

Assumes a GLib.MainLoop event loop.

1617

Assumes a gobject.MainLoop event loop.

2509

1618

"""

2510

2511

1619

def __init__(self, server_address, RequestHandlerClass,

2512

interface=None,

2513

use_ipv6=True,

2514

clients=None,

2515

gnutls_priority=None,

2516

use_dbus=True,

2517

socketfd=None):

1620

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

1621

gnutls_priority=None, use_dbus=True):

2518

1622

self.enabled = False

2519

1623

self.clients = clients

2520

1624

if self.clients is None:

2521

self.clients = {}

1625

self.clients = set()

2522

1626

self.use_dbus = use_dbus

2523

1627

self.gnutls_priority = gnutls_priority

2524

1628

IPv6_TCPServer.__init__(self, server_address,

2525

1629

RequestHandlerClass,

2526

1630

interface = interface,

2527

use_ipv6 = use_ipv6,

2528

socketfd = socketfd)

2529

1631

use_ipv6 = use_ipv6)

2530

1632

def server_activate(self):

2531

1633

if self.enabled:

2532

1634

return socketserver.TCPServer.server_activate(self)

2536

1638

2537

1639

def add_pipe(self, parent_pipe, proc):

2538

1640

# Call "handle_ipc" for both data and EOF events

2539

GLib.io_add_watch(

2540

parent_pipe.fileno(),

2541

GLib.IO_IN | GLib.IO_HUP,

2542

functools.partial(self.handle_ipc,

2543

parent_pipe = parent_pipe,

2544

proc = proc))

1641

gobject.io_add_watch(parent_pipe.fileno(),

1642

gobject.IO_IN | gobject.IO_HUP,

1643

functools.partial(self.handle_ipc,

1644

parent_pipe =

1645

parent_pipe,

1646

proc = proc))

2545

1647

2546

def handle_ipc(self, source, condition,

2547

parent_pipe=None,

2548

proc = None,

2549

client_object=None):

1648

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

1649

proc = None, client_object=None):

1650

condition_names = {

1651

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

1652

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

1653

# blocking).

1654

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

1655

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

1656

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

1657

# broken, usually for pipes and

1658

# sockets).

1659

}

1660

conditions_string = ' | '.join(name

1661

for cond, name in

1662

condition_names.iteritems()

1663

if cond & condition)

2550

1664

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

2551

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

1665

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

2552

1666

# Wait for other process to exit

2553

1667

proc.join()

2554

1668

return False

2561

1675

fpr = request[1]

2562

1676

address = request[2]

2563

1677

2564

for c in self.clients.values():

1678

for c in self.clients:

2565

1679

if c.fingerprint == fpr:

2566

1680

client = c

2567

1681

break

2575

1689

parent_pipe.send(False)

2576

1690

return False

2577

1691

2578

GLib.io_add_watch(

2579

parent_pipe.fileno(),

2580

GLib.IO_IN | GLib.IO_HUP,

2581

functools.partial(self.handle_ipc,

2582

parent_pipe = parent_pipe,

2583

proc = proc,

2584

client_object = client))

1692

gobject.io_add_watch(parent_pipe.fileno(),

1693

gobject.IO_IN | gobject.IO_HUP,

1694

functools.partial(self.handle_ipc,

1695

parent_pipe =

1696

parent_pipe,

1697

proc = proc,

1698

client_object =

1699

client))

2585

1700

parent_pipe.send(True)

2586

1701

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

2587

1702

# same fileno

2593

1708

2594

1709

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

2595

1710

funcname)(*args,

2596

**kwargs)))

1711

**kwargs)))

2597

1712

2598

1713

if command == 'getattr':

2599

1714

attrname = request[1]

2600

if isinstance(client_object.__getattribute__(attrname),

2601

collections.Callable):

2602

parent_pipe.send(('function', ))

1715

if callable(client_object.__getattribute__(attrname)):

1716

parent_pipe.send(('function',))

2603

1717

else:

2604

parent_pipe.send((

2605

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

1718

parent_pipe.send(('data', client_object

1719

.__getattribute__(attrname)))

2606

1720

2607

1721

if command == 'setattr':

2608

1722

attrname = request[1]

2612

1726

return True

2613

1727

2614

1728

2615

def rfc3339_duration_to_delta(duration):

2616

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

2617

2618

>>> rfc3339_duration_to_delta("P7D")

2619

datetime.timedelta(7)

2620

>>> rfc3339_duration_to_delta("PT60S")

2621

datetime.timedelta(0, 60)

2622

>>> rfc3339_duration_to_delta("PT60M")

2623

datetime.timedelta(0, 3600)

2624

>>> rfc3339_duration_to_delta("PT24H")

2625

datetime.timedelta(1)

2626

>>> rfc3339_duration_to_delta("P1W")

2627

datetime.timedelta(7)

2628

>>> rfc3339_duration_to_delta("PT5M30S")

2629

datetime.timedelta(0, 330)

2630

>>> rfc3339_duration_to_delta("P1DT3M20S")

2631

datetime.timedelta(1, 200)

2632

"""

2633

2634

# Parsing an RFC 3339 duration with regular expressions is not

2635

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

2636

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

2637

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

2638

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

2639

# avoid excessive use of external libraries.

2640

2641

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

2642

Token = collections.namedtuple("Token", (

2643

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

2644

# a "group" containing digits

2645

"value", # datetime.timedelta or None

2646

"followers")) # Tokens valid after this token

2647

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

2648

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

2649

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

2650

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

2651

datetime.timedelta(seconds=1),

2652

frozenset((token_end, )))

2653

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

2654

datetime.timedelta(minutes=1),

2655

frozenset((token_second, token_end)))

2656

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

2657

datetime.timedelta(hours=1),

2658

frozenset((token_minute, token_end)))

2659

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

2660

None,

2661

frozenset((token_hour, token_minute,

2662

token_second)))

2663

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

2664

datetime.timedelta(days=1),

2665

frozenset((token_time, token_end)))

2666

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

2667

datetime.timedelta(weeks=4),

2668

frozenset((token_day, token_end)))

2669

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

2670

datetime.timedelta(weeks=52),

2671

frozenset((token_month, token_end)))

2672

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

2673

datetime.timedelta(weeks=1),

2674

frozenset((token_end, )))

2675

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

2676

frozenset((token_year, token_month,

2677

token_day, token_time,

2678

token_week)))

2679

# Define starting values

2680

value = datetime.timedelta() # Value so far

2681

found_token = None

2682

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

2683

s = duration # String left to parse

2684

# Loop until end token is found

2685

while found_token is not token_end:

2686

# Search for any currently valid tokens

2687

for token in followers:

2688

match = token.regexp.match(s)

2689

if match is not None:

2690

# Token found

2691

if token.value is not None:

2692

# Value found, parse digits

2693

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

2694

# Add to value so far

2695

value += factor * token.value

2696

# Strip token from string

2697

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

2698

# Go to found token

2699

found_token = token

2700

# Set valid next tokens

2701

followers = found_token.followers

2702

break

2703

else:

2704

# No currently valid tokens were found

2705

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

2706

.format(duration))

2707

# End token found

2708

return value

2709

2710

2711

1729

def string_to_delta(interval):

2712

1730

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

2713

1731

2724

1742

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

2725

1743

datetime.timedelta(0, 330)

2726

1744

"""

2727

2728

try:

2729

return rfc3339_duration_to_delta(interval)

2730

except ValueError:

2731

pass

2732

2733

1745

timevalue = datetime.timedelta(0)

2734

1746

for s in interval.split():

2735

1747

try:

2736

suffix = s[-1]

1748

suffix = unicode(s[-1])

2737

1749

value = int(s[:-1])

2738

1750

if suffix == "d":

2739

1751

delta = datetime.timedelta(value)

2746

1758

elif suffix == "w":

2747

1759

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

2748

1760

else:

2749

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

2750

except IndexError as e:

1761

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

1762

except (ValueError, IndexError) as e:

2751

1763

raise ValueError(*(e.args))

2752

1764

timevalue += delta

2753

1765

return timevalue

2754

1766

2755

1767

1768

def if_nametoindex(interface):

1769

"""Call the C function if_nametoindex(), or equivalent

1770

1771

Note: This function cannot accept a unicode string."""

1772

global if_nametoindex

1773

try:

1774

if_nametoindex = (ctypes.cdll.LoadLibrary

1775

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

1776

.if_nametoindex)

1777

except (OSError, AttributeError):

1778

logger.warning("Doing if_nametoindex the hard way")

1779

def if_nametoindex(interface):

1780

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

1781

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

1782

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

1783

ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

1784

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

1785

interface))

1786

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

1787

ifreq[16:20])[0]

1788

return interface_index

1789

return if_nametoindex(interface)

1790

1791

2756

1792

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

2757

1793

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

2758

1794

2766

1802

sys.exit()

2767

1803

if not noclose:

2768

1804

# Close all standard open file descriptors

2769

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

1805

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

2770

1806

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

2771

1807

raise OSError(errno.ENODEV,

2772

"{} not a character device"

2773

.format(os.devnull))

1808

"%s not a character device"

1809

% os.path.devnull)

2774

1810

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

2775

1811

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

2776

1812

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

2785

1821

2786

1822

parser = argparse.ArgumentParser()

2787

1823

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

2788

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

1824

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

2789

1825

help="show version number and exit")

2790

1826

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

2791

1827

help="Bind to interface IF")

2797

1833

help="Run self-test")

2798

1834

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

2799

1835

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

2800

" to terminal", default=None)

1836

" to terminal")

2801

1837

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

2802

1838

help="Debug level for stdout output")

2803

1839

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

2810

1846

" files")

2811

1847

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

2812

1848

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

2813

" system bus interface", default=None)

1849

" system bus interface")

2814

1850

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

2815

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

2816

default=None)

2817

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

2818

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

2819

" state", default=None)

2820

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

2821

help="Specify a file descriptor to a network"

2822

" socket to use instead of creating one")

2823

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

2824

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

2825

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

2826

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

2827

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

2828

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

2829

default=None)

2830

1851

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

2831

1852

options = parser.parse_args()

2832

1853

2833

1854

if options.check:

2834

1855

import doctest

2835

fail_count, test_count = doctest.testmod()

2836

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

1856

doctest.testmod()

1857

sys.exit()

2837

1858

2838

1859

# Default values for config file for server-global settings

2839

1860

server_defaults = { "interface": "",

2841

1862

"port": "",

2842

1863

"debug": "False",

2843

1864

"priority":

2844

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

2845

":+SIGN-DSA-SHA256",

1865

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

2846

1866

"servicename": "Mandos",

2847

1867

"use_dbus": "True",

2848

1868

"use_ipv6": "True",

2849

1869

"debuglevel": "",

2850

"restore": "True",

2851

"socket": "",

2852

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

2853

"foreground": "False",

2854

"zeroconf": "True",

2855

}

1870

}

2856

1871

2857

1872

# Parse config file for server-global settings

2858

1873

server_config = configparser.SafeConfigParser(server_defaults)

2859

1874

del server_defaults

2860

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

1875

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

1876

"mandos.conf"))

2861

1877

# Convert the SafeConfigParser object to a dict

2862

1878

server_settings = server_config.defaults()

2863

1879

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

2864

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

1880

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

2865

1881

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

2866

1882

option)

2867

1883

if server_settings["port"]:

2868

1884

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

2869

1885

"port")

2870

if server_settings["socket"]:

2871

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

2872

"socket")

2873

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

2874

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

2875

# happen with a supplied network socket.

2876

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

2877

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

2878

["socket"])

2879

1886

del server_config

2880

1887

2881

1888

# Override the settings from the config file with command line

2882

1889

# options, if set.

2883

1890

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

2884

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

2885

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

2886

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

1891

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

1892

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

2887

1893

value = getattr(options, option)

2888

1894

if value is not None:

2889

1895

server_settings[option] = value

2890

1896

del options

2891

1897

# Force all strings to be unicode

2892

1898

for option in server_settings.keys():

2893

if isinstance(server_settings[option], bytes):

2894

server_settings[option] = (server_settings[option]

2895

.decode("utf-8"))

2896

# Force all boolean options to be boolean

2897

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

2898

"foreground", "zeroconf"):

2899

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

2900

# Debug implies foreground

2901

if server_settings["debug"]:

2902

server_settings["foreground"] = True

1899

if type(server_settings[option]) is str:

1900

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

2903

1901

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

2904

1902

2905

1903

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

2906

1904

2907

if (not server_settings["zeroconf"]

2908

and not (server_settings["port"]

2909

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

2910

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

2911

2912

1905

# For convenience

2913

1906

debug = server_settings["debug"]

2914

1907

debuglevel = server_settings["debuglevel"]

2915

1908

use_dbus = server_settings["use_dbus"]

2916

1909

use_ipv6 = server_settings["use_ipv6"]

2917

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

2918

stored_state_file)

2919

foreground = server_settings["foreground"]

2920

zeroconf = server_settings["zeroconf"]

2921

2922

if debug:

2923

initlogger(debug, logging.DEBUG)

2924

else:

2925

if not debuglevel:

2926

initlogger(debug)

2927

else:

2928

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

2929

initlogger(debug, level)

2930

1910

2931

1911

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

2932

syslogger.setFormatter(

2933

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

2934

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

2935

server_settings["servicename"])))

1912

syslogger.setFormatter(logging.Formatter

1913

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

1914

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

1915

% server_settings["servicename"]))

2936

1916

2937

1917

# Parse config file with clients

2938

client_config = configparser.SafeConfigParser(Client

2939

.client_defaults)

1918

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

1919

"extended_timeout": "15m",

1920

"interval": "2m",

1921

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

1922

"host": "",

1923

"approval_delay": "0s",

1924

"approval_duration": "1s",

1925

}

1926

client_config = configparser.SafeConfigParser(client_defaults)

2940

1927

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

2941

1928

"clients.conf"))

2942

1929

2943

1930

global mandos_dbus_service

2944

1931

mandos_dbus_service = None

2945

1932

2946

socketfd = None

2947

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

2948

socketfd = server_settings["socket"]

2949

tcp_server = MandosServer(

2950

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

2951

ClientHandler,

2952

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

2953

use_ipv6=use_ipv6,

2954

gnutls_priority=server_settings["priority"],

2955

use_dbus=use_dbus,

2956

socketfd=socketfd)

2957

if not foreground:

2958

pidfilename = "/run/mandos.pid"

2959

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

2960

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

2961

pidfile = None

1933

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

1934

server_settings["port"]),

1935

ClientHandler,

1936

interface=(server_settings["interface"]

1937

or None),

1938

use_ipv6=use_ipv6,

1939

gnutls_priority=

1940

server_settings["priority"],

1941

use_dbus=use_dbus)

1942

if not debug:

1943

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

2962

1944

try:

2963

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

2964

except IOError as e:

2965

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

2966

exc_info=e)

1945

pidfile = open(pidfilename, "w")

1946

except IOError:

1947

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

2967

1948

2968

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

2969

("mandos", "mandos"),

2970

("nobody", "nogroup")):

1949

try:

1950

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

1951

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

1952

except KeyError:

2971

1953

try:

2972

uid = pwd.getpwnam(name).pw_uid

2973

gid = pwd.getpwnam(group).pw_gid

2974

break

1954

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

1955

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

2975

1956

except KeyError:

2976

continue

2977

else:

2978

uid = 65534

2979

gid = 65534

1957

try:

1958

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

1959

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

1960

except KeyError:

1961

uid = 65534

1962

gid = 65534

2980

1963

try:

2981

1964

os.setgid(gid)

2982

1965

os.setuid(uid)

2983

if debug:

2984

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

2985

gid))

2986

1966

except OSError as error:

2987

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

2988

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

2989

if error.errno != errno.EPERM:

2990

raise

1967

if error[0] != errno.EPERM:

1968

raise error

1969

1970

if not debug and not debuglevel:

1971

syslogger.setLevel(logging.WARNING)

1972

console.setLevel(logging.WARNING)

1973

if debuglevel:

1974

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

1975

syslogger.setLevel(level)

1976

console.setLevel(level)

2991

1977

2992

1978

if debug:

2993

1979

# Enable all possible GnuTLS debugging

2994

1980

2995

1981

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

2996

1982

# - GnuTLS manual

2997

gnutls.global_set_log_level(11)

1983

gnutls.library.functions.gnutls_global_set_log_level(11)

2998

1984

2999

@gnutls.log_func

1985

@gnutls.library.types.gnutls_log_func

3000

1986

def debug_gnutls(level, string):

3001

1987

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

3002

1988

3003

gnutls.global_set_log_function(debug_gnutls)

1989

(gnutls.library.functions

1990

.gnutls_global_set_log_function(debug_gnutls))

3004

1991

3005

1992

# Redirect stdin so all checkers get /dev/null

3006

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

1993

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

3007

1994

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

3008

1995

if null > 2:

3009

1996

os.close(null)

1997

else:

1998

# No console logging

1999

logger.removeHandler(console)

3010

2000

3011

2001

# Need to fork before connecting to D-Bus

3012

if not foreground:

2002

if not debug:

3013

2003

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

3014

2004

daemon()

3015

2005

3016

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

3017

# to inform GLib that threads will be used.

3018

GLib.threads_init()

3019

3020

2006

global main_loop

3021

2007

# From the Avahi example code

3022

DBusGMainLoop(set_as_default=True)

3023

main_loop = GLib.MainLoop()

2008

DBusGMainLoop(set_as_default=True )

2009

main_loop = gobject.MainLoop()

3024

2010

bus = dbus.SystemBus()

3025

2011

# End of Avahi example code

3026

2012

if use_dbus:

3027

2013

try:

3028

2014

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

3029

bus,

3030

do_not_queue=True)

3031

old_bus_name = dbus.service.BusName(

3032

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

3033

do_not_queue=True)

3034

except dbus.exceptions.DBusException as e:

3035

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

2015

bus, do_not_queue=True)

2016

old_bus_name = (dbus.service.BusName

2017

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

2018

do_not_queue=True))

2019

except dbus.exceptions.NameExistsException as e:

2020

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

3036

2021

use_dbus = False

3037

2022

server_settings["use_dbus"] = False

3038

2023

tcp_server.use_dbus = False

3039

if zeroconf:

3040

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

3041

service = AvahiServiceToSyslog(

3042

name = server_settings["servicename"],

3043

servicetype = "_mandos._tcp",

3044

protocol = protocol,

3045

bus = bus)

3046

if server_settings["interface"]:

3047

service.interface = if_nametoindex(

3048

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

2024

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2025

service = AvahiService(name = server_settings["servicename"],

2026

servicetype = "_mandos._tcp",

2027

protocol = protocol, bus = bus)

2028

if server_settings["interface"]:

2029

service.interface = (if_nametoindex

2030

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

3049

2031

3050

2032

global multiprocessing_manager

3051

2033

multiprocessing_manager = multiprocessing.Manager()

3052

2034

3053

2035

client_class = Client

3054

2036

if use_dbus:

3055

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

3056

3057

client_settings = Client.config_parser(client_config)

3058

old_client_settings = {}

3059

clients_data = {}

3060

3061

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

3062

global wnull

3063

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

3064

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

3065

# mode

3066

if debug or not foreground:

3067

wnull.close()

3068

3069

# Get client data and settings from last running state.

3070

if server_settings["restore"]:

3071

try:

3072

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

3073

if sys.version_info.major == 2:

3074

clients_data, old_client_settings = pickle.load(

3075

stored_state)

3076

else:

3077

bytes_clients_data, bytes_old_client_settings = (

3078

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

3079

### Fix bytes to strings

3080

## clients_data

3081

# .keys()

3082

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

3083

if isinstance(key, bytes)

3084

else key): value

3085

for key, value in

3086

bytes_clients_data.items() }

3087

del bytes_clients_data

3088

for key in clients_data:

3089

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

3090

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

3091

for k, v in

3092

clients_data[key].items() }

3093

clients_data[key] = value

3094

# .client_structure

3095

value["client_structure"] = [

3096

(s.decode("utf-8")

3097

if isinstance(s, bytes)

3098

else s) for s in

3099

value["client_structure"] ]

3100

# .name & .host

3101

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

3102

if isinstance(value[k], bytes):

3103

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

3104

## old_client_settings

3105

# .keys()

3106

old_client_settings = {

3107

(key.decode("utf-8")

3108

if isinstance(key, bytes)

3109

else key): value

3110

for key, value in

3111

bytes_old_client_settings.items() }

3112

del bytes_old_client_settings

3113

# .host

3114

for value in old_client_settings.values():

3115

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

3116

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

3117

.decode("utf-8"))

3118

os.remove(stored_state_path)

3119

except IOError as e:

3120

if e.errno == errno.ENOENT:

3121

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

3122

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

3123

else:

3124

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

3125

exc_info=e)

3126

raise

3127

except EOFError as e:

3128

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

3129

"EOFError:",

3130

exc_info=e)

3131

3132

with PGPEngine() as pgp:

3133

for client_name, client in clients_data.items():

3134

# Skip removed clients

3135

if client_name not in client_settings:

3136

continue

3137

3138

# Decide which value to use after restoring saved state.

3139

# We have three different values: Old config file,

3140

# new config file, and saved state.

3141

# New config value takes precedence if it differs from old

3142

# config value, otherwise use saved state.

3143

for name, value in client_settings[client_name].items():

3144

try:

3145

# For each value in new config, check if it

3146

# differs from the old config value (Except for

3147

# the "secret" attribute)

3148

if (name != "secret"

3149

and (value !=

3150

old_client_settings[client_name][name])):

3151

client[name] = value

3152

except KeyError:

3153

pass

3154

3155

# Clients who has passed its expire date can still be

3156

# enabled if its last checker was successful. A Client

3157

# whose checker succeeded before we stored its state is

3158

# assumed to have successfully run all checkers during

3159

# downtime.

3160

if client["enabled"]:

3161

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

3162

if not client["last_checked_ok"]:

3163

logger.warning(

3164

"disabling client {} - Client never "

3165

"performed a successful checker".format(

3166

client_name))

3167

client["enabled"] = False

3168

elif client["last_checker_status"] != 0:

3169

logger.warning(

3170

"disabling client {} - Client last"

3171

" checker failed with error code"

3172

" {}".format(

3173

client_name,

3174

client["last_checker_status"]))

3175

client["enabled"] = False

3176

else:

3177

client["expires"] = (

3178

datetime.datetime.utcnow()

3179

+ client["timeout"])

3180

logger.debug("Last checker succeeded,"

3181

" keeping {} enabled".format(

3182

client_name))

2037

client_class = functools.partial(ClientDBusTransitional,

2038

bus = bus)

2039

def client_config_items(config, section):

2040

special_settings = {

2041

"approved_by_default":

2042

lambda: config.getboolean(section,

2043

"approved_by_default"),

2044

}

2045

for name, value in config.items(section):

3183

2046

try:

3184

client["secret"] = pgp.decrypt(

3185

client["encrypted_secret"],

3186

client_settings[client_name]["secret"])

3187

except PGPError:

3188

# If decryption fails, we use secret from new settings

3189

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

3190

client_name))

3191

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

3192

["secret"])

3193

3194

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

3195

for client_name in (set(old_client_settings)

3196

- set(client_settings)):

3197

del clients_data[client_name]

3198

for client_name in (set(client_settings)

3199

- set(old_client_settings)):

3200

clients_data[client_name] = client_settings[client_name]

3201

3202

# Create all client objects

3203

for client_name, client in clients_data.items():

3204

tcp_server.clients[client_name] = client_class(

3205

name = client_name,

3206

settings = client,

3207

server_settings = server_settings)

3208

2047

yield (name, special_settings[name]())

2048

except KeyError:

2049

yield (name, value)

2050

2051

tcp_server.clients.update(set(

2052

client_class(name = section,

2053

config= dict(client_config_items(

2054

client_config, section)))

2055

for section in client_config.sections()))

3209

2056

if not tcp_server.clients:

3210

2057

logger.warning("No clients defined")

3211

3212

if not foreground:

3213

if pidfile is not None:

3214

pid = os.getpid()

3215

try:

3216

with pidfile:

3217

print(pid, file=pidfile)

3218

except IOError:

3219

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

3220

pidfilename, pid)

3221

del pidfile

2058

2059

if not debug:

2060

try:

2061

with pidfile:

2062

pid = os.getpid()

2063

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

2064

del pidfile

2065

except IOError:

2066

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

2067

pidfilename, pid)

2068

except NameError:

2069

# "pidfile" was never created

2070

pass

3222

2071

del pidfilename

2072

2073

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

3223

2074

3224

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

3225

GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,

3226

lambda: main_loop.quit() and False)

2075

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

2076

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

3227

2077

3228

2078

if use_dbus:

3229

3230

@alternate_dbus_interfaces(

3231

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

3232

class MandosDBusService(DBusObjectWithObjectManager):

2079

class MandosDBusService(dbus.service.Object):

3233

2080

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

3234

3235

2081

def __init__(self):

3236

2082

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

3237

3238

2083

_interface = "se.recompile.Mandos"

3239

2084

3240

2085

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

3247

2092

"D-Bus signal"

3248

2093

pass

3249

2094

3250

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

3251

"true"})

3252

2095

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

3253

2096

def ClientRemoved(self, objpath, name):

3254

2097

"D-Bus signal"

3255

2098

pass

3256

2099

3257

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

3258

"true"})

3259

2100

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

3260

2101

def GetAllClients(self):

3261

2102

"D-Bus method"

3262

return dbus.Array(c.dbus_object_path for c in

3263

tcp_server.clients.values())

2103

return dbus.Array(c.dbus_object_path

2104

for c in tcp_server.clients)

3264

2105

3265

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

3266

"true"})

3267

2106

@dbus.service.method(_interface,

3268

2107

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

3269

2108

def GetAllClientsWithProperties(self):

3270

2109

"D-Bus method"

3271

2110

return dbus.Dictionary(

3272

{ c.dbus_object_path: c.GetAll(

3273

"se.recompile.Mandos.Client")

3274

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

2111

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

2112

for c in tcp_server.clients),

3275

2113

signature="oa{sv}")

3276

2114

3277

2115

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

3278

2116

def RemoveClient(self, object_path):

3279

2117

"D-Bus method"

3280

for c in tcp_server.clients.values():

2118

for c in tcp_server.clients:

3281

2119

if c.dbus_object_path == object_path:

3282

del tcp_server.clients[c.name]

2120

tcp_server.clients.remove(c)

3283

2121

c.remove_from_connection()

3284

# Don't signal the disabling

2122

# Don't signal anything except ClientRemoved

3285

2123

c.disable(quiet=True)

3286

# Emit D-Bus signal for removal

3287

self.client_removed_signal(c)

2124

# Emit D-Bus signal

2125

self.ClientRemoved(object_path, c.name)

3288

2126

return

3289

2127

raise KeyError(object_path)

3290

2128

3291

2129

del _interface

3292

3293

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

3294

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

3295

def GetManagedObjects(self):

3296

"""D-Bus method"""

3297

return dbus.Dictionary(

3298

{ client.dbus_object_path:

3299

dbus.Dictionary(

3300

{ interface: client.GetAll(interface)

3301

for interface in

3302

client._get_all_interface_names()})

3303

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

3304

3305

def client_added_signal(self, client):

3306

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

3307

if use_dbus:

3308

# New standard signal

3309

self.InterfacesAdded(

3310

client.dbus_object_path,

3311

dbus.Dictionary(

3312

{ interface: client.GetAll(interface)

3313

for interface in

3314

client._get_all_interface_names()}))

3315

# Old signal

3316

self.ClientAdded(client.dbus_object_path)

3317

3318

def client_removed_signal(self, client):

3319

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

3320

if use_dbus:

3321

# New standard signal

3322

self.InterfacesRemoved(

3323

client.dbus_object_path,

3324

client._get_all_interface_names())

3325

# Old signal

3326

self.ClientRemoved(client.dbus_object_path,

3327

client.name)

3328

2130

3329

mandos_dbus_service = MandosDBusService()

2131

class MandosDBusServiceTransitional(MandosDBusService):

2132

__metaclass__ = AlternateDBusNamesMetaclass

2133

mandos_dbus_service = MandosDBusServiceTransitional()

3330

2134

3331

# Save modules to variables to exempt the modules from being

3332

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

3333

mp = multiprocessing

3334

wn = wnull

3335

2135

def cleanup():

3336

2136

"Cleanup function; run on exit"

3337

if zeroconf:

3338

service.cleanup()

3339

3340

mp.active_children()

3341

wn.close()

3342

if not (tcp_server.clients or client_settings):

3343

return

3344

3345

# Store client before exiting. Secrets are encrypted with key

3346

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

3347

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

3348

clients = {}

3349

with PGPEngine() as pgp:

3350

for client in tcp_server.clients.values():

3351

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

3352

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

3353

key)

3354

client_dict = {}

3355

3356

# A list of attributes that can not be pickled

3357

# + secret.

3358

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

3359

"checker", "server_settings" }

3360

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

3361

.Object):

3362

exclude.add(name)

3363

3364

client_dict["encrypted_secret"] = (client

3365

.encrypted_secret)

3366

for attr in client.client_structure:

3367

if attr not in exclude:

3368

client_dict[attr] = getattr(client, attr)

3369

3370

clients[client.name] = client_dict

3371

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

3372

3373

try:

3374

with tempfile.NamedTemporaryFile(

3375

mode='wb',

3376

suffix=".pickle",

3377

prefix='clients-',

3378

dir=os.path.dirname(stored_state_path),

3379

delete=False) as stored_state:

3380

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

3381

protocol = 2)

3382

tempname = stored_state.name

3383

os.rename(tempname, stored_state_path)

3384

except (IOError, OSError) as e:

3385

if not debug:

3386

try:

3387

os.remove(tempname)

3388

except NameError:

3389

pass

3390

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

3391

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

3392

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

3393

else:

3394

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

3395

exc_info=e)

3396

raise

3397

3398

# Delete all clients, and settings from config

2137

service.cleanup()

2138

2139

multiprocessing.active_children()

3399

2140

while tcp_server.clients:

3400

name, client = tcp_server.clients.popitem()

2141

client = tcp_server.clients.pop()

3401

2142

if use_dbus:

3402

2143

client.remove_from_connection()

3403

# Don't signal the disabling

2144

client.disable_hook = None

2145

# Don't signal anything except ClientRemoved

3404

2146

client.disable(quiet=True)

3405

# Emit D-Bus signal for removal

3406

2147

if use_dbus:

3407

mandos_dbus_service.client_removed_signal(client)

3408

client_settings.clear()

2148

# Emit D-Bus signal

2149

mandos_dbus_service.ClientRemoved(client

2150

.dbus_object_path,

2151

client.name)

3409

2152

3410

2153

atexit.register(cleanup)

3411

2154

3412

for client in tcp_server.clients.values():

2155

for client in tcp_server.clients:

3413

2156

if use_dbus:

3414

# Emit D-Bus signal for adding

3415

mandos_dbus_service.client_added_signal(client)

3416

# Need to initiate checking of clients

3417

if client.enabled:

3418

client.init_checker()

2157

# Emit D-Bus signal

2158

mandos_dbus_service.ClientAdded(client.dbus_object_path)

2159

client.enable()

3419

2160

3420

2161

tcp_server.enable()

3421

2162

tcp_server.server_activate()

3422

2163

3423

2164

# Find out what port we got

3424

if zeroconf:

3425

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

2165

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

3426

2166

if use_ipv6:

3427

2167

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

3428

" flowinfo %d, scope_id %d",

3429

*tcp_server.socket.getsockname())

2168

" flowinfo %d, scope_id %d"

2169

% tcp_server.socket.getsockname())

3430

2170

else: # IPv4

3431

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

3432

*tcp_server.socket.getsockname())

2171

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

2172

% tcp_server.socket.getsockname())

3433

2173

3434

2174

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

3435

2175

3436

2176

try:

3437

if zeroconf:

3438

# From the Avahi example code

3439

try:

3440

service.activate()

3441

except dbus.exceptions.DBusException as error:

3442

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

3443

cleanup()

3444

sys.exit(1)

3445

# End of Avahi example code

2177

# From the Avahi example code

2178

try:

2179

service.activate()

2180

except dbus.exceptions.DBusException as error:

2181

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

2182

cleanup()

2183

sys.exit(1)

2184

# End of Avahi example code

3446

2185

3447

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

3448

lambda *args, **kwargs:

3449

(tcp_server.handle_request

3450

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

2186

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

2187

lambda *args, **kwargs:

2188

(tcp_server.handle_request

2189

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

3451

2190

3452

2191

logger.debug("Starting main loop")

3453

2192

main_loop.run()

3454

2193

except AvahiError as error:

3455

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

2194

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

3456

2195

cleanup()

3457

2196

sys.exit(1)

3458

2197

except KeyboardInterrupt: