/mandos/trunk : revision 1274

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#!/usr/bin/python

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

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#!/usr/bin/python3 -bI

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# -*- coding: utf-8; lexical-binding: t -*-

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#

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

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#

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# "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 file is part of Mandos.

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#

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#

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

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#

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from __future__ import (division, absolute_import, print_function,

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unicode_literals)

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except ImportError:

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pass

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import sys

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import unittest

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import argparse

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import logging

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import os

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try:

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import SocketServer as socketserver

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except ImportError:

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import socketserver

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import socket

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import argparse

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import datetime

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import errno

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try:

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import ConfigParser as configparser

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except ImportError:

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import configparser

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import sys

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import re

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import os

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import signal

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import subprocess

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import atexit

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import stat

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import logging

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import logging.handlers

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import pwd

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import contextlib

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import itertools

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import collections

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import codecs

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import random

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import shlex

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import dbus

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import dbus.service

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import gi

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from gi.repository import GLib

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from dbus.mainloop.glib import DBusGMainLoop

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import ctypes

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import xml.dom.minidom

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import inspect

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if sys.version_info.major == 2:

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__metaclass__ = type

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str = unicode

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input = raw_input

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# Add collections.abc.Callable if it does not exist

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try:

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collections.abc.Callable

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except AttributeError:

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class abc:

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Callable = collections.Callable

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collections.abc = abc

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del abc

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# Add shlex.quote if it does not exist

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try:

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shlex.quote

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except AttributeError:

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shlex.quote = re.escape

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# Show warnings by default

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if not sys.warnoptions:

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import warnings

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warnings.simplefilter("default")

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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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# 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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if sys.version_info < (3, 2):

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configparser.Configparser = configparser.SafeConfigParser

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version = "1.8.4"

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version = "1.8.16"

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stored_state_file = "clients.pickle"

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logger = logging.getLogger()

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log = logging.getLogger(os.path.basename(sys.argv[0]))

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logging.captureWarnings(True) # Show warnings via the logging system

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syslogger = None

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try:

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

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" %(message)s"))

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log.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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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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log.addHandler(console)

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log.setLevel(level)

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class PGPError(Exception):

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pass

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class PGPEngine(object):

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class PGPEngine:

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

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def __init__(self):

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

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

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def __enter__(self):

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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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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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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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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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# Pretend that we have an Avahi module

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class avahi(object):

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class avahi:

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

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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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pass

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class AvahiService(object):

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class AvahiService:

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"""An Avahi (Zeroconf) service.

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Attributes:

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

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Used to optionally bind to the specified interface.

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name: string; Example: 'Mandos'

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

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name: string; Example: "Mandos"

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

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

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port: integer; what port to announce

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TXT: list of strings; TXT record for the service

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def rename(self, remove=True):

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

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if self.rename_count >= self.max_renames:

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

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" after %i retries, exiting.",

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self.rename_count)

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

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" after %i retries, exiting.",

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self.rename_count)

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raise AvahiServiceError("Too many renames")

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self.name = str(

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self.server.GetAlternativeServiceName(self.name))

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self.rename_count += 1

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

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self.name)

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

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self.name)

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if remove:

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self.remove()

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try:

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except dbus.exceptions.DBusException as error:

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if (error.get_dbus_name()

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

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

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

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return self.rename(remove=False)

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else:

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

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

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self.cleanup()

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os._exit(1)

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avahi.DBUS_INTERFACE_ENTRY_GROUP)

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self.entry_group_state_changed_match = (

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self.group.connect_to_signal(

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'StateChanged', self.entry_group_state_changed))

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

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self.name, self.type)

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"StateChanged", self.entry_group_state_changed))

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

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self.name, self.type)

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self.group.AddService(

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self.interface,

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self.protocol,

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def entry_group_state_changed(self, state, error):

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

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

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

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if state == avahi.ENTRY_GROUP_ESTABLISHED:

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logger.debug("Zeroconf service established.")

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log.debug("Zeroconf service established.")

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elif state == avahi.ENTRY_GROUP_COLLISION:

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

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log.info("Zeroconf service name collision.")

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self.rename()

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elif state == avahi.ENTRY_GROUP_FAILURE:

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

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str(error))

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

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str(error))

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

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def cleanup(self):

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

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

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

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

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bad_states = {

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avahi.SERVER_INVALID: "Zeroconf server invalid",

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avahi.SERVER_REGISTERING: None,

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if state in bad_states:

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if bad_states[state] is not None:

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if error is None:

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logger.error(bad_states[state])

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log.error(bad_states[state])

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else:

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

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

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self.cleanup()

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elif state == avahi.SERVER_RUNNING:

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try:

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except dbus.exceptions.DBusException as error:

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if (error.get_dbus_name()

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

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logger.info("Local Zeroconf service name"

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" collision.")

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

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return self.rename(remove=False)

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else:

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

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

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self.cleanup()

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os._exit(1)

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else:

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if error is None:

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

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

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else:

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

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

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509

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510

def activate(self):

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

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class AvahiServiceToSyslog(AvahiService):

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

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

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ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)

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ret = super(AvahiServiceToSyslog, self).rename(*args,

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**kwargs)

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syslogger.setFormatter(logging.Formatter(

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

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

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.format(self.name)))

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return ret

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# Pretend that we have a GnuTLS module

506

class gnutls(object):

535

class gnutls:

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

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library = ctypes.util.find_library("gnutls")

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OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h

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535

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# Types

536

class session_int(ctypes.Structure):

565

class _session_int(ctypes.Structure):

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566

_fields_ = []

538

session_t = ctypes.POINTER(session_int)

567

session_t = ctypes.POINTER(_session_int)

539

568

540

569

class certificate_credentials_st(ctypes.Structure):

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_fields_ = []

544

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certificate_type_t = ctypes.c_int

545

574

546

575

class datum_t(ctypes.Structure):

547

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

548

('size', ctypes.c_uint)]

576

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

577

("size", ctypes.c_uint)]

549

578

550

class openpgp_crt_int(ctypes.Structure):

579

class _openpgp_crt_int(ctypes.Structure):

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580

_fields_ = []

552

openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)

581

openpgp_crt_t = ctypes.POINTER(_openpgp_crt_int)

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582

openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h

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583

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

555

584

credentials_type_t = ctypes.c_int

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593

# gnutls.strerror()

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594

self.code = code

566

595

if message is None and code is not None:

567

message = gnutls.strerror(code)

596

message = gnutls.strerror(code).decode(

597

"utf-8", errors="replace")

568

598

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

569

599

message, *args)

570

600

571

601

class CertificateSecurityError(Error):

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602

pass

573

603

604

class PointerTo:

605

def __init__(self, cls):

606

self.cls = cls

607

608

def from_param(self, obj):

609

if not isinstance(obj, self.cls):

610

raise TypeError("Not of type {}: {!r}"

611

.format(self.cls.__name__, obj))

612

return ctypes.byref(obj.from_param(obj))

613

614

class CastToVoidPointer:

615

def __init__(self, cls):

616

self.cls = cls

617

618

def from_param(self, obj):

619

if not isinstance(obj, self.cls):

620

raise TypeError("Not of type {}: {!r}"

621

.format(self.cls.__name__, obj))

622

return ctypes.cast(obj.from_param(obj), ctypes.c_void_p)

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624

class With_from_param:

625

@classmethod

626

def from_param(cls, obj):

627

return obj._as_parameter_

628

574

629

# Classes

575

class Credentials(object):

630

class Credentials(With_from_param):

576

631

def __init__(self):

577

self._c_object = gnutls.certificate_credentials_t()

578

gnutls.certificate_allocate_credentials(

579

ctypes.byref(self._c_object))

632

self._as_parameter_ = gnutls.certificate_credentials_t()

633

gnutls.certificate_allocate_credentials(self)

580

634

self.type = gnutls.CRD_CERTIFICATE

581

635

582

636

def __del__(self):

583

gnutls.certificate_free_credentials(self._c_object)

637

gnutls.certificate_free_credentials(self)

584

638

585

class ClientSession(object):

639

class ClientSession(With_from_param):

586

640

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

587

self._c_object = gnutls.session_t()

641

self._as_parameter_ = gnutls.session_t()

588

642

gnutls_flags = gnutls.CLIENT

589

if gnutls.check_version("3.5.6"):

643

if gnutls.check_version(b"3.5.6"):

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644

gnutls_flags |= gnutls.NO_TICKETS

591

645

if gnutls.has_rawpk:

592

646

gnutls_flags |= gnutls.ENABLE_RAWPK

593

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

647

gnutls.init(self, gnutls_flags)

594

648

del gnutls_flags

595

gnutls.set_default_priority(self._c_object)

596

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

597

gnutls.handshake_set_private_extensions(self._c_object,

598

True)

649

gnutls.set_default_priority(self)

650

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

651

gnutls.handshake_set_private_extensions(self, True)

599

652

self.socket = socket

600

653

if credentials is None:

601

654

credentials = gnutls.Credentials()

602

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

603

ctypes.cast(credentials._c_object,

604

ctypes.c_void_p))

655

gnutls.credentials_set(self, credentials.type,

656

credentials)

605

657

self.credentials = credentials

606

658

607

659

def __del__(self):

608

gnutls.deinit(self._c_object)

660

gnutls.deinit(self)

609

661

610

662

def handshake(self):

611

return gnutls.handshake(self._c_object)

663

return gnutls.handshake(self)

612

664

613

665

def send(self, data):

614

666

data = bytes(data)

615

667

data_len = len(data)

616

668

while data_len > 0:

617

data_len -= gnutls.record_send(self._c_object,

618

data[-data_len:],

669

data_len -= gnutls.record_send(self, data[-data_len:],

619

670

data_len)

620

671

621

672

def bye(self):

622

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

673

return gnutls.bye(self, gnutls.SHUT_RDWR)

623

674

624

675

# Error handling functions

625

676

def _error_code(result):

626

677

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

627

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

628

if result >= 0:

678

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

679

if result >= gnutls.E_SUCCESS:

629

680

return result

630

681

if result == gnutls.E_NO_CERTIFICATE_FOUND:

631

682

raise gnutls.CertificateSecurityError(code=result)

632

683

raise gnutls.Error(code=result)

633

684

634

def _retry_on_error(result, func, arguments):

685

def _retry_on_error(result, func, arguments,

686

_error_code=_error_code):

635

687

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

636

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

637

while result < 0:

688

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

689

while result < gnutls.E_SUCCESS:

638

690

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

639

691

return _error_code(result)

640

692

result = func(*arguments)

645

697

646

698

# Functions

647

699

priority_set_direct = _library.gnutls_priority_set_direct

648

priority_set_direct.argtypes = [session_t, ctypes.c_char_p,

700

priority_set_direct.argtypes = [ClientSession, ctypes.c_char_p,

649

701

ctypes.POINTER(ctypes.c_char_p)]

650

702

priority_set_direct.restype = _error_code

651

703

652

704

init = _library.gnutls_init

653

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

705

init.argtypes = [PointerTo(ClientSession), ctypes.c_int]

654

706

init.restype = _error_code

655

707

656

708

set_default_priority = _library.gnutls_set_default_priority

657

set_default_priority.argtypes = [session_t]

709

set_default_priority.argtypes = [ClientSession]

658

710

set_default_priority.restype = _error_code

659

711

660

712

record_send = _library.gnutls_record_send

661

record_send.argtypes = [session_t, ctypes.c_void_p,

713

record_send.argtypes = [ClientSession, ctypes.c_void_p,

662

714

ctypes.c_size_t]

663

715

record_send.restype = ctypes.c_ssize_t

664

716

record_send.errcheck = _retry_on_error

666

718

certificate_allocate_credentials = (

667

719

_library.gnutls_certificate_allocate_credentials)

668

720

certificate_allocate_credentials.argtypes = [

669

ctypes.POINTER(certificate_credentials_t)]

721

PointerTo(Credentials)]

670

722

certificate_allocate_credentials.restype = _error_code

671

723

672

724

certificate_free_credentials = (

673

725

_library.gnutls_certificate_free_credentials)

674

certificate_free_credentials.argtypes = [

675

certificate_credentials_t]

726

certificate_free_credentials.argtypes = [Credentials]

676

727

certificate_free_credentials.restype = None

677

728

678

729

handshake_set_private_extensions = (

679

730

_library.gnutls_handshake_set_private_extensions)

680

handshake_set_private_extensions.argtypes = [session_t,

731

handshake_set_private_extensions.argtypes = [ClientSession,

681

732

ctypes.c_int]

682

733

handshake_set_private_extensions.restype = None

683

734

684

735

credentials_set = _library.gnutls_credentials_set

685

credentials_set.argtypes = [session_t, credentials_type_t,

686

ctypes.c_void_p]

736

credentials_set.argtypes = [ClientSession, credentials_type_t,

737

CastToVoidPointer(Credentials)]

687

738

credentials_set.restype = _error_code

688

739

689

740

strerror = _library.gnutls_strerror

691

742

strerror.restype = ctypes.c_char_p

692

743

693

744

certificate_type_get = _library.gnutls_certificate_type_get

694

certificate_type_get.argtypes = [session_t]

745

certificate_type_get.argtypes = [ClientSession]

695

746

certificate_type_get.restype = _error_code

696

747

697

748

certificate_get_peers = _library.gnutls_certificate_get_peers

698

certificate_get_peers.argtypes = [session_t,

749

certificate_get_peers.argtypes = [ClientSession,

699

750

ctypes.POINTER(ctypes.c_uint)]

700

751

certificate_get_peers.restype = ctypes.POINTER(datum_t)

701

752

708

759

global_set_log_function.restype = None

709

760

710

761

deinit = _library.gnutls_deinit

711

deinit.argtypes = [session_t]

762

deinit.argtypes = [ClientSession]

712

763

deinit.restype = None

713

764

714

765

handshake = _library.gnutls_handshake

715

handshake.argtypes = [session_t]

716

handshake.restype = _error_code

766

handshake.argtypes = [ClientSession]

767

handshake.restype = ctypes.c_int

717

768

handshake.errcheck = _retry_on_error

718

769

719

770

transport_set_ptr = _library.gnutls_transport_set_ptr

720

transport_set_ptr.argtypes = [session_t, transport_ptr_t]

771

transport_set_ptr.argtypes = [ClientSession, transport_ptr_t]

721

772

transport_set_ptr.restype = None

722

773

723

774

bye = _library.gnutls_bye

724

bye.argtypes = [session_t, close_request_t]

725

bye.restype = _error_code

775

bye.argtypes = [ClientSession, close_request_t]

776

bye.restype = ctypes.c_int

726

777

bye.errcheck = _retry_on_error

727

778

728

779

check_version = _library.gnutls_check_version

745

796

746

797

x509_crt_fmt_t = ctypes.c_int

747

798

748

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

799

# All the function declarations below are from

800

# gnutls/abstract.h

749

801

pubkey_init = _library.gnutls_pubkey_init

750

802

pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]

751

803

pubkey_init.restype = _error_code

765

817

pubkey_deinit.argtypes = [pubkey_t]

766

818

pubkey_deinit.restype = None

767

819

else:

768

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

820

# All the function declarations below are from

821

# gnutls/openpgp.h

769

822

770

823

openpgp_crt_init = _library.gnutls_openpgp_crt_init

771

824

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

777

830

openpgp_crt_fmt_t]

778

831

openpgp_crt_import.restype = _error_code

779

832

780

openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self

781

openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,

782

ctypes.POINTER(ctypes.c_uint)]

833

openpgp_crt_verify_self = \

834

_library.gnutls_openpgp_crt_verify_self

835

openpgp_crt_verify_self.argtypes = [

836

openpgp_crt_t,

837

ctypes.c_uint,

838

ctypes.POINTER(ctypes.c_uint),

839

]

783

840

openpgp_crt_verify_self.restype = _error_code

784

841

785

842

openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit

794

851

ctypes.c_size_t)]

795

852

openpgp_crt_get_fingerprint.restype = _error_code

796

853

797

if check_version("3.6.4"):

854

if check_version(b"3.6.4"):

798

855

certificate_type_get2 = _library.gnutls_certificate_type_get2

799

certificate_type_get2.argtypes = [session_t, ctypes.c_int]

856

certificate_type_get2.argtypes = [ClientSession, ctypes.c_int]

800

857

certificate_type_get2.restype = _error_code

801

858

802

859

# Remove non-public functions

814

871

connection.close()

815

872

816

873

817

class Client(object):

874

class Client:

818

875

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

819

876

820

877

Attributes:

821

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

878

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

822

879

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

823

880

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

824

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

825

to see if the client lives.

826

'None' if no process is running.

881

checker: multiprocessing.Process(); a running checker process used

882

to see if the client lives. None if no process is

883

running.

827

884

checker_callback_tag: a GLib event source tag, or None

828

885

checker_command: string; External command which is run to check

829

886

if client lives. %() expansions are done at

952

1009

self.last_enabled = None

953

1010

self.expires = None

954

1011

955

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

956

logger.debug(" Key ID: %s", self.key_id)

957

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

1012

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

1013

log.debug(" Key ID: %s", self.key_id)

1014

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

958

1015

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

959

1016

datetime.datetime.utcnow())

960

1017

988

1045

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

989

1046

# Already enabled

990

1047

return

991

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

992

1048

self.enabled = True

993

1049

self.last_enabled = datetime.datetime.utcnow()

994

1050

self.init_checker()

999

1055

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

1000

1056

return False

1001

1057

if not quiet:

1002

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

1058

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

1003

1059

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

1004

1060

GLib.source_remove(self.disable_initiator_tag)

1005

1061

self.disable_initiator_tag = None

1017

1073

def __del__(self):

1018

1074

self.disable()

1019

1075

1020

def init_checker(self):

1021

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

1022

# and every interval from then on.

1076

def init_checker(self, randomize_start=False):

1077

# Schedule a new checker to be started a randomly selected

1078

# time (a fraction of 'interval') from now. This spreads out

1079

# the startup of checkers over time when the server is

1080

# started.

1023

1081

if self.checker_initiator_tag is not None:

1024

1082

GLib.source_remove(self.checker_initiator_tag)

1083

interval_milliseconds = int(self.interval.total_seconds()

1084

* 1000)

1085

if randomize_start:

1086

delay_milliseconds = random.randrange(

1087

interval_milliseconds + 1)

1088

else:

1089

delay_milliseconds = interval_milliseconds

1025

1090

self.checker_initiator_tag = GLib.timeout_add(

1026

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

1027

self.start_checker)

1028

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

1091

delay_milliseconds, self.start_checker, randomize_start)

1092

delay = datetime.timedelta(0, 0, 0, delay_milliseconds)

1093

# A checker might take up to an 'interval' of time, so we can

1094

# expire at the soonest one interval after a checker was

1095

# started. Since the initial checker is delayed, the expire

1096

# time might have to be extended.

1097

now = datetime.datetime.utcnow()

1098

self.expires = now + delay + self.interval

1099

# Schedule a disable() at expire time

1029

1100

if self.disable_initiator_tag is not None:

1030

1101

GLib.source_remove(self.disable_initiator_tag)

1031

1102

self.disable_initiator_tag = GLib.timeout_add(

1032

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

1033

# Also start a new checker *right now*.

1034

self.start_checker()

1103

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

1104

self.disable)

1035

1105

1036

1106

def checker_callback(self, source, condition, connection,

1037

1107

command):

1038

1108

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

1039

self.checker_callback_tag = None

1040

self.checker = None

1041

1109

# Read return code from connection (see call_pipe)

1042

1110

returncode = connection.recv()

1043

1111

connection.close()

1112

if self.checker is not None:

1113

self.checker.join()

1114

self.checker_callback_tag = None

1115

self.checker = None

1044

1116

1045

1117

if returncode >= 0:

1046

1118

self.last_checker_status = returncode

1047

1119

self.last_checker_signal = None

1048

1120

if self.last_checker_status == 0:

1049

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

1050

vars(self))

1121

log.info("Checker for %(name)s succeeded", vars(self))

1051

1122

self.checked_ok()

1052

1123

else:

1053

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

1124

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

1054

1125

else:

1055

1126

self.last_checker_status = -1

1056

1127

self.last_checker_signal = -returncode

1057

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

1058

vars(self))

1128

log.warning("Checker for %(name)s crashed?", vars(self))

1059

1129

return False

1060

1130

1061

1131

def checked_ok(self):

1080

1150

def need_approval(self):

1081

1151

self.last_approval_request = datetime.datetime.utcnow()

1082

1152

1083

def start_checker(self):

1153

def start_checker(self, start_was_randomized=False):

1084

1154

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

1085

1155

1086

1156

If a checker already exists, leave it running and do

1095

1165

# should be.

1096

1166

1097

1167

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

1098

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

1168

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

1099

1169

self.checker.join()

1100

1170

self.checker = None

1101

1171

# Start a new checker if needed

1102

1172

if self.checker is None:

1103

1173

# Escape attributes for the shell

1104

1174

escaped_attrs = {

1105

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

1175

attr: shlex.quote(str(getattr(self, attr)))

1106

1176

for attr in self.runtime_expansions}

1107

1177

try:

1108

1178

command = self.checker_command % escaped_attrs

1109

1179

except TypeError as error:

1110

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

1111

self.checker_command,

1112

exc_info=error)

1180

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

1181

self.checker_command, exc_info=error)

1113

1182

return True # Try again later

1114

1183

self.current_checker_command = command

1115

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

1116

self.name)

1184

log.info("Starting checker %r for %s", command, self.name)

1117

1185

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

1118

1186

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

1119

1187

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

1135

1203

kwargs=popen_args)

1136

1204

self.checker.start()

1137

1205

self.checker_callback_tag = GLib.io_add_watch(

1138

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

1206

GLib.IOChannel.unix_new(pipe[0].fileno()),

1207

GLib.PRIORITY_DEFAULT, GLib.IO_IN,

1139

1208

self.checker_callback, pipe[0], command)

1209

if start_was_randomized:

1210

# We were started after a random delay; Schedule a new

1211

# checker to be started an 'interval' from now, and every

1212

# interval from then on.

1213

now = datetime.datetime.utcnow()

1214

self.checker_initiator_tag = GLib.timeout_add(

1215

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

1216

self.start_checker)

1217

self.expires = max(self.expires, now + self.interval)

1218

# Don't start a new checker again after same random delay

1219

return False

1140

1220

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

1141

1221

return True

1142

1222

1147

1227

self.checker_callback_tag = None

1148

1228

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

1149

1229

return

1150

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

1230

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

1151

1231

self.checker.terminate()

1152

1232

self.checker = None

1153

1233

1180

1260

func._dbus_name = func.__name__

1181

1261

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

1182

1262

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

1183

func._dbus_get_args_options = {'byte_arrays': byte_arrays}

1263

func._dbus_get_args_options = {"byte_arrays": byte_arrays}

1184

1264

return func

1185

1265

1186

1266

return decorator

1275

1355

1276

1356

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1277

1357

out_signature="s",

1278

path_keyword='object_path',

1279

connection_keyword='connection')

1358

path_keyword="object_path",

1359

connection_keyword="connection")

1280

1360

def Introspect(self, object_path, connection):

1281

1361

"""Overloading of standard D-Bus method.

1282

1362

1331

1411

document.unlink()

1332

1412

except (AttributeError, xml.dom.DOMException,

1333

1413

xml.parsers.expat.ExpatError) as error:

1334

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

1335

exc_info=error)

1414

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

1415

exc_info=error)

1336

1416

return xmlstring

1337

1417

1338

1418

1396

1476

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

1397

1477

"'ay' signature {!r}"

1398

1478

.format(prop._dbus_signature))

1399

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

1400

for byte in value))

1479

value = dbus.ByteArray(bytes(value))

1401

1480

prop(value)

1402

1481

1403

1482

@dbus.service.method(dbus.PROPERTIES_IFACE,

1436

1515

1437

1516

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1438

1517

out_signature="s",

1439

path_keyword='object_path',

1440

connection_keyword='connection')

1518

path_keyword="object_path",

1519

connection_keyword="connection")

1441

1520

def Introspect(self, object_path, connection):

1442

1521

"""Overloading of standard D-Bus method.

1443

1522

1499

1578

document.unlink()

1500

1579

except (AttributeError, xml.dom.DOMException,

1501

1580

xml.parsers.expat.ExpatError) as error:

1502

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

1503

exc_info=error)

1581

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

1582

exc_info=error)

1504

1583

return xmlstring

1505

1584

1506

1585

1538

1617

1539

1618

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1540

1619

out_signature="s",

1541

path_keyword='object_path',

1542

connection_keyword='connection')

1620

path_keyword="object_path",

1621

connection_keyword="connection")

1543

1622

def Introspect(self, object_path, connection):

1544

1623

"""Overloading of standard D-Bus method.

1545

1624

1570

1649

document.unlink()

1571

1650

except (AttributeError, xml.dom.DOMException,

1572

1651

xml.parsers.expat.ExpatError) as error:

1573

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

1574

exc_info=error)

1652

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

1653

exc_info=error)

1575

1654

return xmlstring

1576

1655

1577

1656

2208

2287

del _interface

2209

2288

2210

2289

2211

class ProxyClient(object):

2290

class ProxyClient:

2212

2291

def __init__(self, child_pipe, key_id, fpr, address):

2213

2292

self._pipe = child_pipe

2214

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

2293

self._pipe.send(("init", key_id, fpr, address))

2215

2294

if not self._pipe.recv():

2216

2295

raise KeyError(key_id or fpr)

2217

2296

2218

2297

def __getattribute__(self, name):

2219

if name == '_pipe':

2298

if name == "_pipe":

2220

2299

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

2221

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

2300

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

2222

2301

data = self._pipe.recv()

2223

if data[0] == 'data':

2302

if data[0] == "data":

2224

2303

return data[1]

2225

if data[0] == 'function':

2304

if data[0] == "function":

2226

2305

2227

2306

def func(*args, **kwargs):

2228

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

2307

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

2229

2308

return self._pipe.recv()[1]

2230

2309

2231

2310

return func

2232

2311

2233

2312

def __setattr__(self, name, value):

2234

if name == '_pipe':

2313

if name == "_pipe":

2235

2314

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

2236

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

2315

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

2237

2316

2238

2317

2239

2318

class ClientHandler(socketserver.BaseRequestHandler, object):

2244

2323

2245

2324

def handle(self):

2246

2325

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

2247

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

2248

str(self.client_address))

2249

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

2250

self.server.child_pipe.fileno())

2326

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

2327

str(self.client_address))

2328

log.debug("Pipe FD: %d", self.server.child_pipe.fileno())

2251

2329

2252

2330

session = gnutls.ClientSession(self.request)

2253

2331

2254

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

2332

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

2255

2333

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

2256

2334

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

2257

2335

# "+DHE-DSS"))

2259

2337

priority = self.server.gnutls_priority

2260

2338

if priority is None:

2261

2339

priority = "NORMAL"

2262

gnutls.priority_set_direct(session._c_object,

2263

priority.encode("utf-8"),

2264

None)

2340

gnutls.priority_set_direct(session,

2341

priority.encode("utf-8"), None)

2265

2342

2266

2343

# Start communication using the Mandos protocol

2267

2344

# Get protocol number

2268

2345

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

2269

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

2346

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

2270

2347

try:

2271

2348

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

2272

2349

raise RuntimeError(line)

2273

2350

except (ValueError, IndexError, RuntimeError) as error:

2274

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

2351

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

2275

2352

return

2276

2353

2277

2354

# Start GnuTLS connection

2278

2355

try:

2279

2356

session.handshake()

2280

2357

except gnutls.Error as error:

2281

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

2358

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

2282

2359

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

2283

2360

# established. Just abandon the request.

2284

2361

return

2285

logger.debug("Handshake succeeded")

2362

log.debug("Handshake succeeded")

2286

2363

2287

2364

approval_required = False

2288

2365

try:

2289

2366

if gnutls.has_rawpk:

2290

fpr = ""

2367

fpr = b""

2291

2368

try:

2292

2369

key_id = self.key_id(

2293

2370

self.peer_certificate(session))

2294

2371

except (TypeError, gnutls.Error) as error:

2295

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

2372

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

2296

2373

return

2297

logger.debug("Key ID: %s", key_id)

2374

log.debug("Key ID: %s",

2375

key_id.decode("utf-8",

2376

errors="replace"))

2298

2377

2299

2378

else:

2300

key_id = ""

2379

key_id = b""

2301

2380

try:

2302

2381

fpr = self.fingerprint(

2303

2382

self.peer_certificate(session))

2304

2383

except (TypeError, gnutls.Error) as error:

2305

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

2384

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

2306

2385

return

2307

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

2386

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

2308

2387

2309

2388

try:

2310

2389

client = ProxyClient(child_pipe, key_id, fpr,

2319

2398

2320

2399

while True:

2321

2400

if not client.enabled:

2322

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

2323

client.name)

2401

log.info("Client %s is disabled", client.name)

2324

2402

if self.server.use_dbus:

2325

2403

# Emit D-Bus signal

2326

2404

client.Rejected("Disabled")

2330

2408

# We are approved or approval is disabled

2331

2409

break

2332

2410

elif client.approved is None:

2333

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

2334

client.name)

2411

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

2412

client.name)

2335

2413

if self.server.use_dbus:

2336

2414

# Emit D-Bus signal

2337

2415

client.NeedApproval(

2338

2416

client.approval_delay.total_seconds()

2339

2417

* 1000, client.approved_by_default)

2340

2418

else:

2341

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

2342

client.name)

2419

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

2420

client.name)

2343

2421

if self.server.use_dbus:

2344

2422

# Emit D-Bus signal

2345

2423

client.Rejected("Denied")

2353

2431

time2 = datetime.datetime.now()

2354

2432

if (time2 - time) >= delay:

2355

2433

if not client.approved_by_default:

2356

logger.warning("Client %s timed out while"

2357

" waiting for approval",

2358

client.name)

2434

log.warning("Client %s timed out while"

2435

" waiting for approval",

2436

client.name)

2359

2437

if self.server.use_dbus:

2360

2438

# Emit D-Bus signal

2361

2439

client.Rejected("Approval timed out")

2368

2446

try:

2369

2447

session.send(client.secret)

2370

2448

except gnutls.Error as error:

2371

logger.warning("gnutls send failed",

2372

exc_info=error)

2449

log.warning("gnutls send failed", exc_info=error)

2373

2450

return

2374

2451

2375

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

2452

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

2376

2453

# bump the timeout using extended_timeout

2377

2454

client.bump_timeout(client.extended_timeout)

2378

2455

if self.server.use_dbus:

2385

2462

try:

2386

2463

session.bye()

2387

2464

except gnutls.Error as error:

2388

logger.warning("GnuTLS bye failed",

2389

exc_info=error)

2465

log.warning("GnuTLS bye failed", exc_info=error)

2390

2466

2391

2467

@staticmethod

2392

2468

def peer_certificate(session):

2393

2469

"Return the peer's certificate as a bytestring"

2394

2470

try:

2395

cert_type = gnutls.certificate_type_get2(session._c_object,

2396

gnutls.CTYPE_PEERS)

2471

cert_type = gnutls.certificate_type_get2(

2472

session, gnutls.CTYPE_PEERS)

2397

2473

except AttributeError:

2398

cert_type = gnutls.certificate_type_get(session._c_object)

2474

cert_type = gnutls.certificate_type_get(session)

2399

2475

if gnutls.has_rawpk:

2400

2476

valid_cert_types = frozenset((gnutls.CRT_RAWPK,))

2401

2477

else:

2402

2478

valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))

2403

2479

# If not a valid certificate type...

2404

2480

if cert_type not in valid_cert_types:

2405

logger.info("Cert type %r not in %r", cert_type,

2406

valid_cert_types)

2481

log.info("Cert type %r not in %r", cert_type,

2482

valid_cert_types)

2407

2483

# ...return invalid data

2408

2484

return b""

2409

2485

list_size = ctypes.c_uint(1)

2410

2486

cert_list = (gnutls.certificate_get_peers

2411

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

2487

(session, ctypes.byref(list_size)))

2412

2488

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

2413

2489

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

2414

2490

if list_size.value == 0:

2436

2512

buf = ctypes.create_string_buffer(32)

2437

2513

buf_len = ctypes.c_size_t(len(buf))

2438

2514

# Get the key ID from the raw public key into the buffer

2439

gnutls.pubkey_get_key_id(pubkey,

2440

gnutls.KEYID_USE_SHA256,

2441

ctypes.cast(ctypes.byref(buf),

2442

ctypes.POINTER(ctypes.c_ubyte)),

2443

ctypes.byref(buf_len))

2515

gnutls.pubkey_get_key_id(

2516

pubkey,

2517

gnutls.KEYID_USE_SHA256,

2518

ctypes.cast(ctypes.byref(buf),

2519

ctypes.POINTER(ctypes.c_ubyte)),

2520

ctypes.byref(buf_len))

2444

2521

# Deinit the certificate

2445

2522

gnutls.pubkey_deinit(pubkey)

2446

2523

2487

2564

return hex_fpr

2488

2565

2489

2566

2490

class MultiprocessingMixIn(object):

2567

class MultiprocessingMixIn:

2491

2568

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

2492

2569

2493

2570

def sub_process_main(self, request, address):

2505

2582

return proc

2506

2583

2507

2584

2508

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

2585

class MultiprocessingMixInWithPipe(MultiprocessingMixIn):

2509

2586

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

2510

2587

2511

2588

def process_request(self, request, client_address):

2526

2603

2527

2604

2528

2605

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

2529

socketserver.TCPServer, object):

2530

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

2606

socketserver.TCPServer):

2607

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

2531

2608

2532

2609

Attributes:

2533

2610

enabled: Boolean; whether this server is activated yet

2584

2661

if SO_BINDTODEVICE is None:

2585

2662

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

2586

2663

# common enough.

2587

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

2664

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

2588

2665

SO_BINDTODEVICE = 25

2589

2666

try:

2590

2667

self.socket.setsockopt(

2592

2669

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

2593

2670

except socket.error as error:

2594

2671

if error.errno == errno.EPERM:

2595

logger.error("No permission to bind to"

2596

" interface %s", self.interface)

2672

log.error("No permission to bind to interface %s",

2673

self.interface)

2597

2674

elif error.errno == errno.ENOPROTOOPT:

2598

logger.error("SO_BINDTODEVICE not available;"

2599

" cannot bind to interface %s",

2600

self.interface)

2675

log.error("SO_BINDTODEVICE not available; cannot"

2676

" bind to interface %s", self.interface)

2601

2677

elif error.errno == errno.ENODEV:

2602

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

2603

" cannot bind", self.interface)

2678

log.error("Interface %s does not exist, cannot"

2679

" bind", self.interface)

2604

2680

else:

2605

2681

raise

2606

2682

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

2607

2683

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

2684

if self.server_address[1]:

2685

self.allow_reuse_address = True

2608

2686

if not self.server_address[0]:

2609

2687

if self.address_family == socket.AF_INET6:

2610

2688

any_address = "::" # in6addr_any

2663

2741

def add_pipe(self, parent_pipe, proc):

2664

2742

# Call "handle_ipc" for both data and EOF events

2665

2743

GLib.io_add_watch(

2666

parent_pipe.fileno(),

2667

GLib.IO_IN | GLib.IO_HUP,

2744

GLib.IOChannel.unix_new(parent_pipe.fileno()),

2745

GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,

2668

2746

functools.partial(self.handle_ipc,

2669

2747

parent_pipe=parent_pipe,

2670

2748

proc=proc))

2683

2761

request = parent_pipe.recv()

2684

2762

command = request[0]

2685

2763

2686

if command == 'init':

2764

if command == "init":

2687

2765

key_id = request[1].decode("ascii")

2688

2766

fpr = request[2].decode("ascii")

2689

2767

address = request[3]

2690

2768

2691

2769

for c in self.clients.values():

2692

if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":

2770

if key_id == ("E3B0C44298FC1C149AFBF4C8996FB924"

2771

"27AE41E4649B934CA495991B7852B855"):

2693

2772

continue

2694

2773

if key_id and c.key_id == key_id:

2695

2774

client = c

2698

2777

client = c

2699

2778

break

2700

2779

else:

2701

logger.info("Client not found for key ID: %s, address"

2702

": %s", key_id or fpr, address)

2780

log.info("Client not found for key ID: %s, address:"

2781

" %s", key_id or fpr, address)

2703

2782

if self.use_dbus:

2704

2783

# Emit D-Bus signal

2705

2784

mandos_dbus_service.ClientNotFound(key_id or fpr,

2708

2787

return False

2709

2788

2710

2789

GLib.io_add_watch(

2711

parent_pipe.fileno(),

2712

GLib.IO_IN | GLib.IO_HUP,

2790

GLib.IOChannel.unix_new(parent_pipe.fileno()),

2791

GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,

2713

2792

functools.partial(self.handle_ipc,

2714

2793

parent_pipe=parent_pipe,

2715

2794

proc=proc,

2718

2797

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

2719

2798

# same fileno

2720

2799

return False

2721

if command == 'funcall':

2800

if command == "funcall":

2722

2801

funcname = request[1]

2723

2802

args = request[2]

2724

2803

kwargs = request[3]

2725

2804

2726

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

2805

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

2727

2806

funcname)(*args,

2728

2807

**kwargs)))

2729

2808

2730

if command == 'getattr':

2809

if command == "getattr":

2731

2810

attrname = request[1]

2732

2811

if isinstance(client_object.__getattribute__(attrname),

2733

collections.Callable):

2734

parent_pipe.send(('function', ))

2812

collections.abc.Callable):

2813

parent_pipe.send(("function", ))

2735

2814

else:

2736

2815

parent_pipe.send((

2737

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

2816

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

2738

2817

2739

if command == 'setattr':

2818

if command == "setattr":

2740

2819

attrname = request[1]

2741

2820

value = request[2]

2742

2821

setattr(client_object, attrname, value)

2747

2826

def rfc3339_duration_to_delta(duration):

2748

2827

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

2749

2828

2750

>>> rfc3339_duration_to_delta("P7D")

2751

datetime.timedelta(7)

2752

>>> rfc3339_duration_to_delta("PT60S")

2753

datetime.timedelta(0, 60)

2754

>>> rfc3339_duration_to_delta("PT60M")

2755

datetime.timedelta(0, 3600)

2756

>>> rfc3339_duration_to_delta("PT24H")

2757

datetime.timedelta(1)

2758

>>> rfc3339_duration_to_delta("P1W")

2759

datetime.timedelta(7)

2760

>>> rfc3339_duration_to_delta("PT5M30S")

2761

datetime.timedelta(0, 330)

2762

>>> rfc3339_duration_to_delta("P1DT3M20S")

2763

datetime.timedelta(1, 200)

2829

>>> timedelta = datetime.timedelta

2830

>>> rfc3339_duration_to_delta("P7D") == timedelta(7)

2831

True

2832

>>> rfc3339_duration_to_delta("PT60S") == timedelta(0, 60)

2833

True

2834

>>> rfc3339_duration_to_delta("PT60M") == timedelta(0, 3600)

2835

True

2836

>>> rfc3339_duration_to_delta("PT24H") == timedelta(1)

2837

True

2838

>>> rfc3339_duration_to_delta("P1W") == timedelta(7)

2839

True

2840

>>> rfc3339_duration_to_delta("PT5M30S") == timedelta(0, 330)

2841

True

2842

>>> rfc3339_duration_to_delta("P1DT3M20S") == timedelta(1, 200)

2843

True

2844

>>> del timedelta

2764

2845

"""

2765

2846

2766

2847

# Parsing an RFC 3339 duration with regular expressions is not

2846

2927

def string_to_delta(interval):

2847

2928

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

2848

2929

2849

>>> string_to_delta('7d')

2850

datetime.timedelta(7)

2851

>>> string_to_delta('60s')

2852

datetime.timedelta(0, 60)

2853

>>> string_to_delta('60m')

2854

datetime.timedelta(0, 3600)

2855

>>> string_to_delta('24h')

2856

datetime.timedelta(1)

2857

>>> string_to_delta('1w')

2858

datetime.timedelta(7)

2859

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

2860

datetime.timedelta(0, 330)

2930

>>> string_to_delta("7d") == datetime.timedelta(7)

2931

True

2932

>>> string_to_delta("60s") == datetime.timedelta(0, 60)

2933

True

2934

>>> string_to_delta("60m") == datetime.timedelta(0, 3600)

2935

True

2936

>>> string_to_delta("24h") == datetime.timedelta(1)

2937

True

2938

>>> string_to_delta("1w") == datetime.timedelta(7)

2939

True

2940

>>> string_to_delta("5m 30s") == datetime.timedelta(0, 330)

2941

True

2861

2942

"""

2862

2943

2863

2944

try:

2965

3046

2966

3047

options = parser.parse_args()

2967

3048

2968

if options.check:

2969

import doctest

2970

fail_count, test_count = doctest.testmod()

2971

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

2972

2973

3049

# Default values for config file for server-global settings

2974

3050

if gnutls.has_rawpk:

2975

3051

priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"

2995

3071

del priority

2996

3072

2997

3073

# Parse config file for server-global settings

2998

server_config = configparser.SafeConfigParser(server_defaults)

3074

server_config = configparser.ConfigParser(server_defaults)

2999

3075

del server_defaults

3000

3076

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

3001

# Convert the SafeConfigParser object to a dict

3077

# Convert the ConfigParser object to a dict

3002

3078

server_settings = server_config.defaults()

3003

3079

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

3004

3080

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

3071

3147

3072

3148

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

3073

3149

syslogger.setFormatter(

3074

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

3075

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

3150

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

3151

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

3076

3152

server_settings["servicename"])))

3077

3153

3078

3154

# Parse config file with clients

3079

client_config = configparser.SafeConfigParser(Client

3080

.client_defaults)

3155

client_config = configparser.ConfigParser(Client.client_defaults)

3081

3156

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

3082

3157

"clients.conf"))

3083

3158

3103

3178

try:

3104

3179

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

3105

3180

except IOError as e:

3106

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

3107

exc_info=e)

3181

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

3182

exc_info=e)

3108

3183

3109

3184

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

3110

3185

("mandos", "mandos"),

3121

3196

try:

3122

3197

os.setgid(gid)

3123

3198

os.setuid(uid)

3124

if debug:

3125

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

3126

gid))

3199

log.debug("Did setuid/setgid to %s:%s", uid, gid)

3127

3200

except OSError as error:

3128

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

3129

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

3201

log.warning("Failed to setuid/setgid to %s:%s: %s", uid, gid,

3202

os.strerror(error.errno))

3130

3203

if error.errno != errno.EPERM:

3131

3204

raise

3132

3205

3139

3212

3140

3213

@gnutls.log_func

3141

3214

def debug_gnutls(level, string):

3142

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

3215

log.debug("GnuTLS: %s",

3216

string[:-1].decode("utf-8", errors="replace"))

3143

3217

3144

3218

gnutls.global_set_log_function(debug_gnutls)

3145

3219

3154

3228

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

3155

3229

daemon()

3156

3230

3157

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

3158

# to inform GLib that threads will be used.

3159

GLib.threads_init()

3231

if gi.version_info < (3, 10, 2):

3232

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

3233

# need to inform GLib that threads will be used.

3234

GLib.threads_init()

3160

3235

3161

3236

global main_loop

3162

3237

# From the Avahi example code

3173

3248

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

3174

3249

do_not_queue=True)

3175

3250

except dbus.exceptions.DBusException as e:

3176

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

3251

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

3177

3252

use_dbus = False

3178

3253

server_settings["use_dbus"] = False

3179

3254

tcp_server.use_dbus = False

3238

3313

if isinstance(s, bytes)

3239

3314

else s) for s in

3240

3315

value["client_structure"]]

3241

# .name & .host

3242

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

3316

# .name, .host, and .checker_command

3317

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

3243

3318

if isinstance(value[k], bytes):

3244

3319

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

3245

if not value.has_key("key_id"):

3320

if "key_id" not in value:

3246

3321

value["key_id"] = ""

3247

elif not value.has_key("fingerprint"):

3322

elif "fingerprint" not in value:

3248

3323

value["fingerprint"] = ""

3249

3324

# old_client_settings

3250

3325

# .keys()

3255

3330

for key, value in

3256

3331

bytes_old_client_settings.items()}

3257

3332

del bytes_old_client_settings

3258

# .host

3333

# .host and .checker_command

3259

3334

for value in old_client_settings.values():

3260

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

3261

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

3262

.decode("utf-8"))

3335

for attribute in ("host", "checker_command"):

3336

if isinstance(value[attribute], bytes):

3337

value[attribute] = (value[attribute]

3338

.decode("utf-8"))

3263

3339

os.remove(stored_state_path)

3264

3340

except IOError as e:

3265

3341

if e.errno == errno.ENOENT:

3266

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

3267

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

3342

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

3343

" %s", os.strerror(e.errno))

3268

3344

else:

3269

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

3270

exc_info=e)

3345

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

3346

exc_info=e)

3271

3347

raise

3272

3348

except EOFError as e:

3273

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

3274

"EOFError:",

3275

exc_info=e)

3349

log.warning("Could not load persistent state: EOFError:",

3350

exc_info=e)

3276

3351

3277

3352

with PGPEngine() as pgp:

3278

3353

for client_name, client in clients_data.items():

3305

3380

if client["enabled"]:

3306

3381

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

3307

3382

if not client["last_checked_ok"]:

3308

logger.warning(

3309

"disabling client {} - Client never "

3310

"performed a successful checker".format(

3311

client_name))

3383

log.warning("disabling client %s - Client"

3384

" never performed a successful"

3385

" checker", client_name)

3312

3386

client["enabled"] = False

3313

3387

elif client["last_checker_status"] != 0:

3314

logger.warning(

3315

"disabling client {} - Client last"

3316

" checker failed with error code"

3317

" {}".format(

3318

client_name,

3319

client["last_checker_status"]))

3388

log.warning("disabling client %s - Client"

3389

" last checker failed with error"

3390

" code %s", client_name,

3391

client["last_checker_status"])

3320

3392

client["enabled"] = False

3321

3393

else:

3322

3394

client["expires"] = (

3323

3395

datetime.datetime.utcnow()

3324

3396

+ client["timeout"])

3325

logger.debug("Last checker succeeded,"

3326

" keeping {} enabled".format(

3327

client_name))

3397

log.debug("Last checker succeeded, keeping %s"

3398

" enabled", client_name)

3328

3399

try:

3329

3400

client["secret"] = pgp.decrypt(

3330

3401

client["encrypted_secret"],

3331

3402

client_settings[client_name]["secret"])

3332

3403

except PGPError:

3333

3404

# If decryption fails, we use secret from new settings

3334

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

3335

client_name))

3405

log.debug("Failed to decrypt %s old secret",

3406

client_name)

3336

3407

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

3337

3408

["secret"])

3338

3409

3352

3423

server_settings=server_settings)

3353

3424

3354

3425

if not tcp_server.clients:

3355

logger.warning("No clients defined")

3426

log.warning("No clients defined")

3356

3427

3357

3428

if not foreground:

3358

3429

if pidfile is not None:

3361

3432

with pidfile:

3362

3433

print(pid, file=pidfile)

3363

3434

except IOError:

3364

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

3365

pidfilename, pid)

3435

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

3436

pidfilename, pid)

3366

3437

del pidfile

3367

3438

del pidfilename

3368

3439

3518

3589

3519

3590

try:

3520

3591

with tempfile.NamedTemporaryFile(

3521

mode='wb',

3592

mode="wb",

3522

3593

suffix=".pickle",

3523

prefix='clients-',

3594

prefix="clients-",

3524

3595

dir=os.path.dirname(stored_state_path),

3525

3596

delete=False) as stored_state:

3526

3597

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

3534

3605

except NameError:

3535

3606

pass

3536

3607

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

3537

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

3538

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

3608

log.warning("Could not save persistent state: %s",

3609

os.strerror(e.errno))

3539

3610

else:

3540

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

3541

exc_info=e)

3611

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

3612

exc_info=e)

3542

3613

raise

3543

3614

3544

3615

# Delete all clients, and settings from config

3561

3632

mandos_dbus_service.client_added_signal(client)

3562

3633

# Need to initiate checking of clients

3563

3634

if client.enabled:

3564

client.init_checker()

3635

client.init_checker(randomize_start=True)

3565

3636

3566

3637

tcp_server.enable()

3567

3638

tcp_server.server_activate()

3570

3641

if zeroconf:

3571

3642

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

3572

3643

if use_ipv6:

3573

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

3574

" flowinfo %d, scope_id %d",

3575

*tcp_server.socket.getsockname())

3644

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

3645

" scope_id %d", *tcp_server.socket.getsockname())

3576

3646

else: # IPv4

3577

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

3578

*tcp_server.socket.getsockname())

3647

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

3648

*tcp_server.socket.getsockname())

3579

3649

3580

3650

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

3581

3651

3585

3655

try:

3586

3656

service.activate()

3587

3657

except dbus.exceptions.DBusException as error:

3588

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

3658

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

3589

3659

cleanup()

3590

3660

sys.exit(1)

3591

3661

# End of Avahi example code

3592

3662

3593

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

3594

lambda *args, **kwargs:

3595

(tcp_server.handle_request

3596

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

3663

GLib.io_add_watch(

3664

GLib.IOChannel.unix_new(tcp_server.fileno()),

3665

GLib.PRIORITY_DEFAULT, GLib.IO_IN,

3666

lambda *args, **kwargs: (tcp_server.handle_request

3667

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

3597

3668

3598

logger.debug("Starting main loop")

3669

log.debug("Starting main loop")

3599

3670

main_loop.run()

3600

3671

except AvahiError as error:

3601

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

3672

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

3602

3673

cleanup()

3603

3674

sys.exit(1)

3604

3675

except KeyboardInterrupt:

3605

3676

if debug:

3606

3677

print("", file=sys.stderr)

3607

logger.debug("Server received KeyboardInterrupt")

3608

logger.debug("Server exiting")

3678

log.debug("Server received KeyboardInterrupt")

3679

log.debug("Server exiting")

3609

3680

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

3610

3681

cleanup()

3611

3682

3612

3613

if __name__ == '__main__':

3614

main()

3683

3684

def parse_test_args():

3685

# type: () -> argparse.Namespace

3686

parser = argparse.ArgumentParser(add_help=False)

3687

parser.add_argument("--check", action="store_true")

3688

parser.add_argument("--prefix", )

3689

args, unknown_args = parser.parse_known_args()

3690

if args.check:

3691

# Remove test options from sys.argv

3692

sys.argv[1:] = unknown_args

3693

return args

3694

3695

# Add all tests from doctest strings

3696

def load_tests(loader, tests, none):

3697

import doctest

3698

tests.addTests(doctest.DocTestSuite())

3699

return tests

3700

3701

if __name__ == "__main__":

3702

options = parse_test_args()

3703

try:

3704

if options.check:

3705

extra_test_prefix = options.prefix

3706

if extra_test_prefix is not None:

3707

if not (unittest.main(argv=[""], exit=False)

3708

.result.wasSuccessful()):

3709

sys.exit(1)

3710

class ExtraTestLoader(unittest.TestLoader):

3711

testMethodPrefix = extra_test_prefix

3712

# Call using ./scriptname --test [--verbose]

3713

unittest.main(argv=[""], testLoader=ExtraTestLoader())

3714

else:

3715

unittest.main(argv=[""])

3716

else:

3717

main()

3718

finally:

3719

logging.shutdown()

3720

3721

# Local Variables:

3722

# run-tests:

3723

# (lambda (&optional extra)

3724

# (if (not (funcall run-tests-in-test-buffer default-directory

3725

# extra))

3726

# (funcall show-test-buffer-in-test-window)

3727

# (funcall remove-test-window)

3728

# (if extra (message "Extra tests run successfully!"))))

3729

# run-tests-in-test-buffer:

3730

# (lambda (dir &optional extra)

3731

# (with-current-buffer (get-buffer-create "*Test*")

3732

# (setq buffer-read-only nil

3733

# default-directory dir)

3734

# (erase-buffer)

3735

# (compilation-mode))

3736

# (let ((process-result

3737

# (let ((inhibit-read-only t))

3738

# (process-file-shell-command

3739

# (funcall get-command-line extra) nil "*Test*"))))

3740

# (and (numberp process-result)

3741

# (= process-result 0))))

3742

# get-command-line:

3743

# (lambda (&optional extra)

3744

# (let ((quoted-script

3745

# (shell-quote-argument (funcall get-script-name))))

3746

# (format

3747

# (concat "%s --check" (if extra " --prefix=atest" ""))

3748

# quoted-script)))

3749

# get-script-name:

3750

# (lambda ()

3751

# (if (fboundp 'file-local-name)

3752

# (file-local-name (buffer-file-name))

3753

# (or (file-remote-p (buffer-file-name) 'localname)

3754

# (buffer-file-name))))

3755

# remove-test-window:

3756

# (lambda ()

3757

# (let ((test-window (get-buffer-window "*Test*")))

3758

# (if test-window (delete-window test-window))))

3759

# show-test-buffer-in-test-window:

3760

# (lambda ()

3761

# (when (not (get-buffer-window-list "*Test*"))

3762

# (setq next-error-last-buffer (get-buffer "*Test*"))

3763

# (let* ((side (if (>= (window-width) 146) 'right 'bottom))

3764

# (display-buffer-overriding-action

3765

# `((display-buffer-in-side-window) (side . ,side)

3766

# (window-height . fit-window-to-buffer)

3767

# (window-width . fit-window-to-buffer))))

3768

# (display-buffer "*Test*"))))

3769

# eval:

3770

# (progn

3771

# (let* ((run-extra-tests (lambda () (interactive)

3772

# (funcall run-tests t)))

3773

# (inner-keymap `(keymap (116 . ,run-extra-tests))) ; t

3774

# (outer-keymap `(keymap (3 . ,inner-keymap)))) ; C-c

3775

# (setq minor-mode-overriding-map-alist

3776

# (cons `(run-tests . ,outer-keymap)

3777

# minor-mode-overriding-map-alist)))

3778

# (add-hook 'after-save-hook run-tests 90 t))

3779

# End: