/mandos/release : revision 407

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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 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 = "1.8.7"

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version = "1.8.15"

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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"""

428

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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454

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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:

433

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"""

453

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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485

if state in bad_states:

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if bad_states[state] is not None:

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if error is None:

463

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:

482

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

486

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"""

502

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

526

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

527

**kwargs)

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syslogger.setFormatter(logging.Formatter(

504

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

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

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530

.format(self.name)))

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531

return ret

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509

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# Pretend that we have a GnuTLS module

510

class gnutls(object):

535

class gnutls:

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

512

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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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# Types

540

class session_int(ctypes.Structure):

565

class _session_int(ctypes.Structure):

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566

_fields_ = []

542

session_t = ctypes.POINTER(session_int)

567

session_t = ctypes.POINTER(_session_int)

543

568

544

569

class certificate_credentials_st(ctypes.Structure):

545

570

_fields_ = []

548

573

certificate_type_t = ctypes.c_int

549

574

550

575

class datum_t(ctypes.Structure):

551

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

552

('size', ctypes.c_uint)]

576

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

577

("size", ctypes.c_uint)]

553

578

554

class openpgp_crt_int(ctypes.Structure):

579

class _openpgp_crt_int(ctypes.Structure):

555

580

_fields_ = []

556

openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)

581

openpgp_crt_t = ctypes.POINTER(_openpgp_crt_int)

557

582

openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h

558

583

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

559

584

credentials_type_t = ctypes.c_int

568

593

# gnutls.strerror()

569

594

self.code = code

570

595

if message is None and code is not None:

571

message = gnutls.strerror(code)

596

message = gnutls.strerror(code).decode(

597

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

572

598

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

573

599

message, *args)

574

600

575

601

class CertificateSecurityError(Error):

576

602

pass

577

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)

623

624

class With_from_param:

625

@classmethod

626

def from_param(cls, obj):

627

return obj._as_parameter_

628

578

629

# Classes

579

class Credentials(object):

630

class Credentials(With_from_param):

580

631

def __init__(self):

581

self._c_object = gnutls.certificate_credentials_t()

582

gnutls.certificate_allocate_credentials(

583

ctypes.byref(self._c_object))

632

self._as_parameter_ = gnutls.certificate_credentials_t()

633

gnutls.certificate_allocate_credentials(self)

584

634

self.type = gnutls.CRD_CERTIFICATE

585

635

586

636

def __del__(self):

587

gnutls.certificate_free_credentials(self._c_object)

637

gnutls.certificate_free_credentials(self)

588

638

589

class ClientSession(object):

639

class ClientSession(With_from_param):

590

640

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

591

self._c_object = gnutls.session_t()

641

self._as_parameter_ = gnutls.session_t()

592

642

gnutls_flags = gnutls.CLIENT

593

643

if gnutls.check_version(b"3.5.6"):

594

644

gnutls_flags |= gnutls.NO_TICKETS

595

645

if gnutls.has_rawpk:

596

646

gnutls_flags |= gnutls.ENABLE_RAWPK

597

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

647

gnutls.init(self, gnutls_flags)

598

648

del gnutls_flags

599

gnutls.set_default_priority(self._c_object)

600

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

601

gnutls.handshake_set_private_extensions(self._c_object,

602

True)

649

gnutls.set_default_priority(self)

650

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

651

gnutls.handshake_set_private_extensions(self, True)

603

652

self.socket = socket

604

653

if credentials is None:

605

654

credentials = gnutls.Credentials()

606

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

607

ctypes.cast(credentials._c_object,

608

ctypes.c_void_p))

655

gnutls.credentials_set(self, credentials.type,

656

credentials)

609

657

self.credentials = credentials

610

658

611

659

def __del__(self):

612

gnutls.deinit(self._c_object)

660

gnutls.deinit(self)

613

661

614

662

def handshake(self):

615

return gnutls.handshake(self._c_object)

663

return gnutls.handshake(self)

616

664

617

665

def send(self, data):

618

666

data = bytes(data)

619

667

data_len = len(data)

620

668

while data_len > 0:

621

data_len -= gnutls.record_send(self._c_object,

622

data[-data_len:],

669

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

623

670

data_len)

624

671

625

672

def bye(self):

626

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

673

return gnutls.bye(self, gnutls.SHUT_RDWR)

627

674

628

675

# Error handling functions

629

676

def _error_code(result):

630

677

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

631

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

632

if result >= 0:

678

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

679

if result >= gnutls.E_SUCCESS:

633

680

return result

634

681

if result == gnutls.E_NO_CERTIFICATE_FOUND:

635

682

raise gnutls.CertificateSecurityError(code=result)

636

683

raise gnutls.Error(code=result)

637

684

638

def _retry_on_error(result, func, arguments):

685

def _retry_on_error(result, func, arguments,

686

_error_code=_error_code):

639

687

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

640

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

641

while result < 0:

688

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

689

while result < gnutls.E_SUCCESS:

642

690

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

643

691

return _error_code(result)

644

692

result = func(*arguments)

649

697

650

698

# Functions

651

699

priority_set_direct = _library.gnutls_priority_set_direct

652

priority_set_direct.argtypes = [session_t, ctypes.c_char_p,

700

priority_set_direct.argtypes = [ClientSession, ctypes.c_char_p,

653

701

ctypes.POINTER(ctypes.c_char_p)]

654

702

priority_set_direct.restype = _error_code

655

703

656

704

init = _library.gnutls_init

657

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

705

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

658

706

init.restype = _error_code

659

707

660

708

set_default_priority = _library.gnutls_set_default_priority

661

set_default_priority.argtypes = [session_t]

709

set_default_priority.argtypes = [ClientSession]

662

710

set_default_priority.restype = _error_code

663

711

664

712

record_send = _library.gnutls_record_send

665

record_send.argtypes = [session_t, ctypes.c_void_p,

713

record_send.argtypes = [ClientSession, ctypes.c_void_p,

666

714

ctypes.c_size_t]

667

715

record_send.restype = ctypes.c_ssize_t

668

716

record_send.errcheck = _retry_on_error

670

718

certificate_allocate_credentials = (

671

719

_library.gnutls_certificate_allocate_credentials)

672

720

certificate_allocate_credentials.argtypes = [

673

ctypes.POINTER(certificate_credentials_t)]

721

PointerTo(Credentials)]

674

722

certificate_allocate_credentials.restype = _error_code

675

723

676

724

certificate_free_credentials = (

677

725

_library.gnutls_certificate_free_credentials)

678

certificate_free_credentials.argtypes = [

679

certificate_credentials_t]

726

certificate_free_credentials.argtypes = [Credentials]

680

727

certificate_free_credentials.restype = None

681

728

682

729

handshake_set_private_extensions = (

683

730

_library.gnutls_handshake_set_private_extensions)

684

handshake_set_private_extensions.argtypes = [session_t,

731

handshake_set_private_extensions.argtypes = [ClientSession,

685

732

ctypes.c_int]

686

733

handshake_set_private_extensions.restype = None

687

734

688

735

credentials_set = _library.gnutls_credentials_set

689

credentials_set.argtypes = [session_t, credentials_type_t,

690

ctypes.c_void_p]

736

credentials_set.argtypes = [ClientSession, credentials_type_t,

737

CastToVoidPointer(Credentials)]

691

738

credentials_set.restype = _error_code

692

739

693

740

strerror = _library.gnutls_strerror

695

742

strerror.restype = ctypes.c_char_p

696

743

697

744

certificate_type_get = _library.gnutls_certificate_type_get

698

certificate_type_get.argtypes = [session_t]

745

certificate_type_get.argtypes = [ClientSession]

699

746

certificate_type_get.restype = _error_code

700

747

701

748

certificate_get_peers = _library.gnutls_certificate_get_peers

702

certificate_get_peers.argtypes = [session_t,

749

certificate_get_peers.argtypes = [ClientSession,

703

750

ctypes.POINTER(ctypes.c_uint)]

704

751

certificate_get_peers.restype = ctypes.POINTER(datum_t)

705

752

712

759

global_set_log_function.restype = None

713

760

714

761

deinit = _library.gnutls_deinit

715

deinit.argtypes = [session_t]

762

deinit.argtypes = [ClientSession]

716

763

deinit.restype = None

717

764

718

765

handshake = _library.gnutls_handshake

719

handshake.argtypes = [session_t]

720

handshake.restype = _error_code

766

handshake.argtypes = [ClientSession]

767

handshake.restype = ctypes.c_int

721

768

handshake.errcheck = _retry_on_error

722

769

723

770

transport_set_ptr = _library.gnutls_transport_set_ptr

724

transport_set_ptr.argtypes = [session_t, transport_ptr_t]

771

transport_set_ptr.argtypes = [ClientSession, transport_ptr_t]

725

772

transport_set_ptr.restype = None

726

773

727

774

bye = _library.gnutls_bye

728

bye.argtypes = [session_t, close_request_t]

729

bye.restype = _error_code

775

bye.argtypes = [ClientSession, close_request_t]

776

bye.restype = ctypes.c_int

730

777

bye.errcheck = _retry_on_error

731

778

732

779

check_version = _library.gnutls_check_version

749

796

750

797

x509_crt_fmt_t = ctypes.c_int

751

798

752

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

799

# All the function declarations below are from

800

# gnutls/abstract.h

753

801

pubkey_init = _library.gnutls_pubkey_init

754

802

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

755

803

pubkey_init.restype = _error_code

769

817

pubkey_deinit.argtypes = [pubkey_t]

770

818

pubkey_deinit.restype = None

771

819

else:

772

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

820

# All the function declarations below are from

821

# gnutls/openpgp.h

773

822

774

823

openpgp_crt_init = _library.gnutls_openpgp_crt_init

775

824

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

781

830

openpgp_crt_fmt_t]

782

831

openpgp_crt_import.restype = _error_code

783

832

784

openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self

785

openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,

786

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

]

787

840

openpgp_crt_verify_self.restype = _error_code

788

841

789

842

openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit

800

853

801

854

if check_version(b"3.6.4"):

802

855

certificate_type_get2 = _library.gnutls_certificate_type_get2

803

certificate_type_get2.argtypes = [session_t, ctypes.c_int]

856

certificate_type_get2.argtypes = [ClientSession, ctypes.c_int]

804

857

certificate_type_get2.restype = _error_code

805

858

806

859

# Remove non-public functions

818

871

connection.close()

819

872

820

873

821

class Client(object):

874

class Client:

822

875

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

823

876

824

877

Attributes:

825

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

878

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

826

879

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

827

880

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

828

881

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

829

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

882

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

830

883

running.

831

884

checker_callback_tag: a GLib event source tag, or None

832

885

checker_command: string; External command which is run to check

956

1009

self.last_enabled = None

957

1010

self.expires = None

958

1011

959

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

960

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

961

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)

962

1015

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

963

1016

datetime.datetime.utcnow())

964

1017

1003

1056

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

1004

1057

return False

1005

1058

if not quiet:

1006

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

1059

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

1007

1060

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

1008

1061

GLib.source_remove(self.disable_initiator_tag)

1009

1062

self.disable_initiator_tag = None

1027

1080

if self.checker_initiator_tag is not None:

1028

1081

GLib.source_remove(self.checker_initiator_tag)

1029

1082

self.checker_initiator_tag = GLib.timeout_add(

1030

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

1083

random.randrange(int(self.interval.total_seconds() * 1000

1084

+ 1)),

1031

1085

self.start_checker)

1032

1086

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

1033

1087

if self.disable_initiator_tag is not None:

1043

1097

# Read return code from connection (see call_pipe)

1044

1098

returncode = connection.recv()

1045

1099

connection.close()

1046

self.checker.join()

1100

if self.checker is not None:

1101

self.checker.join()

1047

1102

self.checker_callback_tag = None

1048

1103

self.checker = None

1049

1104

1051

1106

self.last_checker_status = returncode

1052

1107

self.last_checker_signal = None

1053

1108

if self.last_checker_status == 0:

1054

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

1055

vars(self))

1109

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

1056

1110

self.checked_ok()

1057

1111

else:

1058

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

1112

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

1059

1113

else:

1060

1114

self.last_checker_status = -1

1061

1115

self.last_checker_signal = -returncode

1062

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

1063

vars(self))

1116

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

1064

1117

return False

1065

1118

1066

1119

def checked_ok(self):

1100

1153

# should be.

1101

1154

1102

1155

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

1103

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

1156

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

1104

1157

self.checker.join()

1105

1158

self.checker = None

1106

1159

# Start a new checker if needed

1107

1160

if self.checker is None:

1108

1161

# Escape attributes for the shell

1109

1162

escaped_attrs = {

1110

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

1163

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

1111

1164

for attr in self.runtime_expansions}

1112

1165

try:

1113

1166

command = self.checker_command % escaped_attrs

1114

1167

except TypeError as error:

1115

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

1116

self.checker_command,

1117

exc_info=error)

1168

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

1169

self.checker_command, exc_info=error)

1118

1170

return True # Try again later

1119

1171

self.current_checker_command = command

1120

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

1121

self.name)

1172

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

1122

1173

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

1123

1174

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

1124

1175

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

1140

1191

kwargs=popen_args)

1141

1192

self.checker.start()

1142

1193

self.checker_callback_tag = GLib.io_add_watch(

1143

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

1194

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

1195

GLib.PRIORITY_DEFAULT, GLib.IO_IN,

1144

1196

self.checker_callback, pipe[0], command)

1145

1197

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

1146

1198

return True

1152

1204

self.checker_callback_tag = None

1153

1205

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

1154

1206

return

1155

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

1207

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

1156

1208

self.checker.terminate()

1157

1209

self.checker = None

1158

1210

1185

1237

func._dbus_name = func.__name__

1186

1238

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

1187

1239

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

1188

func._dbus_get_args_options = {'byte_arrays': byte_arrays}

1240

func._dbus_get_args_options = {"byte_arrays": byte_arrays}

1189

1241

return func

1190

1242

1191

1243

return decorator

1280

1332

1281

1333

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1282

1334

out_signature="s",

1283

path_keyword='object_path',

1284

connection_keyword='connection')

1335

path_keyword="object_path",

1336

connection_keyword="connection")

1285

1337

def Introspect(self, object_path, connection):

1286

1338

"""Overloading of standard D-Bus method.

1287

1339

1336

1388

document.unlink()

1337

1389

except (AttributeError, xml.dom.DOMException,

1338

1390

xml.parsers.expat.ExpatError) as error:

1339

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

1340

exc_info=error)

1391

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

1392

exc_info=error)

1341

1393

return xmlstring

1342

1394

1343

1395

1401

1453

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

1402

1454

"'ay' signature {!r}"

1403

1455

.format(prop._dbus_signature))

1404

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

1405

for byte in value))

1456

value = dbus.ByteArray(bytes(value))

1406

1457

prop(value)

1407

1458

1408

1459

@dbus.service.method(dbus.PROPERTIES_IFACE,

1441

1492

1442

1493

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1443

1494

out_signature="s",

1444

path_keyword='object_path',

1445

connection_keyword='connection')

1495

path_keyword="object_path",

1496

connection_keyword="connection")

1446

1497

def Introspect(self, object_path, connection):

1447

1498

"""Overloading of standard D-Bus method.

1448

1499

1504

1555

document.unlink()

1505

1556

except (AttributeError, xml.dom.DOMException,

1506

1557

xml.parsers.expat.ExpatError) as error:

1507

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

1508

exc_info=error)

1558

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

1559

exc_info=error)

1509

1560

return xmlstring

1510

1561

1511

1562

1543

1594

1544

1595

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1545

1596

out_signature="s",

1546

path_keyword='object_path',

1547

connection_keyword='connection')

1597

path_keyword="object_path",

1598

connection_keyword="connection")

1548

1599

def Introspect(self, object_path, connection):

1549

1600

"""Overloading of standard D-Bus method.

1550

1601

1575

1626

document.unlink()

1576

1627

except (AttributeError, xml.dom.DOMException,

1577

1628

xml.parsers.expat.ExpatError) as error:

1578

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

1579

exc_info=error)

1629

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

1630

exc_info=error)

1580

1631

return xmlstring

1581

1632

1582

1633

2213

2264

del _interface

2214

2265

2215

2266

2216

class ProxyClient(object):

2267

class ProxyClient:

2217

2268

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

2218

2269

self._pipe = child_pipe

2219

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

2270

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

2220

2271

if not self._pipe.recv():

2221

2272

raise KeyError(key_id or fpr)

2222

2273

2223

2274

def __getattribute__(self, name):

2224

if name == '_pipe':

2275

if name == "_pipe":

2225

2276

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

2226

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

2277

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

2227

2278

data = self._pipe.recv()

2228

if data[0] == 'data':

2279

if data[0] == "data":

2229

2280

return data[1]

2230

if data[0] == 'function':

2281

if data[0] == "function":

2231

2282

2232

2283

def func(*args, **kwargs):

2233

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

2284

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

2234

2285

return self._pipe.recv()[1]

2235

2286

2236

2287

return func

2237

2288

2238

2289

def __setattr__(self, name, value):

2239

if name == '_pipe':

2290

if name == "_pipe":

2240

2291

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

2241

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

2292

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

2242

2293

2243

2294

2244

2295

class ClientHandler(socketserver.BaseRequestHandler, object):

2249

2300

2250

2301

def handle(self):

2251

2302

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

2252

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

2253

str(self.client_address))

2254

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

2255

self.server.child_pipe.fileno())

2303

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

2304

str(self.client_address))

2305

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

2256

2306

2257

2307

session = gnutls.ClientSession(self.request)

2258

2308

2259

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

2309

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

2260

2310

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

2261

2311

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

2262

2312

# "+DHE-DSS"))

2264

2314

priority = self.server.gnutls_priority

2265

2315

if priority is None:

2266

2316

priority = "NORMAL"

2267

gnutls.priority_set_direct(session._c_object,

2268

priority.encode("utf-8"),

2269

None)

2317

gnutls.priority_set_direct(session,

2318

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

2270

2319

2271

2320

# Start communication using the Mandos protocol

2272

2321

# Get protocol number

2273

2322

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

2274

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

2323

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

2275

2324

try:

2276

2325

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

2277

2326

raise RuntimeError(line)

2278

2327

except (ValueError, IndexError, RuntimeError) as error:

2279

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

2328

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

2280

2329

return

2281

2330

2282

2331

# Start GnuTLS connection

2283

2332

try:

2284

2333

session.handshake()

2285

2334

except gnutls.Error as error:

2286

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

2335

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

2287

2336

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

2288

2337

# established. Just abandon the request.

2289

2338

return

2290

logger.debug("Handshake succeeded")

2339

log.debug("Handshake succeeded")

2291

2340

2292

2341

approval_required = False

2293

2342

try:

2297

2346

key_id = self.key_id(

2298

2347

self.peer_certificate(session))

2299

2348

except (TypeError, gnutls.Error) as error:

2300

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

2349

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

2301

2350

return

2302

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

2351

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

2352

key_id.decode("utf-8",

2353

errors="replace"))

2303

2354

2304

2355

else:

2305

2356

key_id = b""

2307

2358

fpr = self.fingerprint(

2308

2359

self.peer_certificate(session))

2309

2360

except (TypeError, gnutls.Error) as error:

2310

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

2361

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

2311

2362

return

2312

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

2363

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

2313

2364

2314

2365

try:

2315

2366

client = ProxyClient(child_pipe, key_id, fpr,

2324

2375

2325

2376

while True:

2326

2377

if not client.enabled:

2327

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

2328

client.name)

2378

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

2329

2379

if self.server.use_dbus:

2330

2380

# Emit D-Bus signal

2331

2381

client.Rejected("Disabled")

2335

2385

# We are approved or approval is disabled

2336

2386

break

2337

2387

elif client.approved is None:

2338

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

2339

client.name)

2388

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

2389

client.name)

2340

2390

if self.server.use_dbus:

2341

2391

# Emit D-Bus signal

2342

2392

client.NeedApproval(

2343

2393

client.approval_delay.total_seconds()

2344

2394

* 1000, client.approved_by_default)

2345

2395

else:

2346

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

2347

client.name)

2396

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

2397

client.name)

2348

2398

if self.server.use_dbus:

2349

2399

# Emit D-Bus signal

2350

2400

client.Rejected("Denied")

2358

2408

time2 = datetime.datetime.now()

2359

2409

if (time2 - time) >= delay:

2360

2410

if not client.approved_by_default:

2361

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

2362

" waiting for approval",

2363

client.name)

2411

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

2412

" waiting for approval",

2413

client.name)

2364

2414

if self.server.use_dbus:

2365

2415

# Emit D-Bus signal

2366

2416

client.Rejected("Approval timed out")

2373

2423

try:

2374

2424

session.send(client.secret)

2375

2425

except gnutls.Error as error:

2376

logger.warning("gnutls send failed",

2377

exc_info=error)

2426

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

2378

2427

return

2379

2428

2380

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

2429

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

2381

2430

# bump the timeout using extended_timeout

2382

2431

client.bump_timeout(client.extended_timeout)

2383

2432

if self.server.use_dbus:

2390

2439

try:

2391

2440

session.bye()

2392

2441

except gnutls.Error as error:

2393

logger.warning("GnuTLS bye failed",

2394

exc_info=error)

2442

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

2395

2443

2396

2444

@staticmethod

2397

2445

def peer_certificate(session):

2398

2446

"Return the peer's certificate as a bytestring"

2399

2447

try:

2400

cert_type = gnutls.certificate_type_get2(session._c_object,

2401

gnutls.CTYPE_PEERS)

2448

cert_type = gnutls.certificate_type_get2(

2449

session, gnutls.CTYPE_PEERS)

2402

2450

except AttributeError:

2403

cert_type = gnutls.certificate_type_get(session._c_object)

2451

cert_type = gnutls.certificate_type_get(session)

2404

2452

if gnutls.has_rawpk:

2405

2453

valid_cert_types = frozenset((gnutls.CRT_RAWPK,))

2406

2454

else:

2407

2455

valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))

2408

2456

# If not a valid certificate type...

2409

2457

if cert_type not in valid_cert_types:

2410

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

2411

valid_cert_types)

2458

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

2459

valid_cert_types)

2412

2460

# ...return invalid data

2413

2461

return b""

2414

2462

list_size = ctypes.c_uint(1)

2415

2463

cert_list = (gnutls.certificate_get_peers

2416

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

2464

(session, ctypes.byref(list_size)))

2417

2465

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

2418

2466

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

2419

2467

if list_size.value == 0:

2441

2489

buf = ctypes.create_string_buffer(32)

2442

2490

buf_len = ctypes.c_size_t(len(buf))

2443

2491

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

2444

gnutls.pubkey_get_key_id(pubkey,

2445

gnutls.KEYID_USE_SHA256,

2446

ctypes.cast(ctypes.byref(buf),

2447

ctypes.POINTER(ctypes.c_ubyte)),

2448

ctypes.byref(buf_len))

2492

gnutls.pubkey_get_key_id(

2493

pubkey,

2494

gnutls.KEYID_USE_SHA256,

2495

ctypes.cast(ctypes.byref(buf),

2496

ctypes.POINTER(ctypes.c_ubyte)),

2497

ctypes.byref(buf_len))

2449

2498

# Deinit the certificate

2450

2499

gnutls.pubkey_deinit(pubkey)

2451

2500

2492

2541

return hex_fpr

2493

2542

2494

2543

2495

class MultiprocessingMixIn(object):

2544

class MultiprocessingMixIn:

2496

2545

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

2497

2546

2498

2547

def sub_process_main(self, request, address):

2510

2559

return proc

2511

2560

2512

2561

2513

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

2562

class MultiprocessingMixInWithPipe(MultiprocessingMixIn):

2514

2563

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

2515

2564

2516

2565

def process_request(self, request, client_address):

2531

2580

2532

2581

2533

2582

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

2534

socketserver.TCPServer, object):

2535

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

2583

socketserver.TCPServer):

2584

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

2536

2585

2537

2586

Attributes:

2538

2587

enabled: Boolean; whether this server is activated yet

2589

2638

if SO_BINDTODEVICE is None:

2590

2639

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

2591

2640

# common enough.

2592

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

2641

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

2593

2642

SO_BINDTODEVICE = 25

2594

2643

try:

2595

2644

self.socket.setsockopt(

2597

2646

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

2598

2647

except socket.error as error:

2599

2648

if error.errno == errno.EPERM:

2600

logger.error("No permission to bind to"

2601

" interface %s", self.interface)

2649

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

2650

self.interface)

2602

2651

elif error.errno == errno.ENOPROTOOPT:

2603

logger.error("SO_BINDTODEVICE not available;"

2604

" cannot bind to interface %s",

2605

self.interface)

2652

log.error("SO_BINDTODEVICE not available; cannot"

2653

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

2606

2654

elif error.errno == errno.ENODEV:

2607

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

2608

" cannot bind", self.interface)

2655

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

2656

" bind", self.interface)

2609

2657

else:

2610

2658

raise

2611

2659

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

2670

2718

def add_pipe(self, parent_pipe, proc):

2671

2719

# Call "handle_ipc" for both data and EOF events

2672

2720

GLib.io_add_watch(

2673

parent_pipe.fileno(),

2674

GLib.IO_IN | GLib.IO_HUP,

2721

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

2722

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

2675

2723

functools.partial(self.handle_ipc,

2676

2724

parent_pipe=parent_pipe,

2677

2725

proc=proc))

2690

2738

request = parent_pipe.recv()

2691

2739

command = request[0]

2692

2740

2693

if command == 'init':

2741

if command == "init":

2694

2742

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

2695

2743

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

2696

2744

address = request[3]

2697

2745

2698

2746

for c in self.clients.values():

2699

if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":

2747

if key_id == ("E3B0C44298FC1C149AFBF4C8996FB924"

2748

"27AE41E4649B934CA495991B7852B855"):

2700

2749

continue

2701

2750

if key_id and c.key_id == key_id:

2702

2751

client = c

2705

2754

client = c

2706

2755

break

2707

2756

else:

2708

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

2709

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

2757

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

2758

" %s", key_id or fpr, address)

2710

2759

if self.use_dbus:

2711

2760

# Emit D-Bus signal

2712

2761

mandos_dbus_service.ClientNotFound(key_id or fpr,

2715

2764

return False

2716

2765

2717

2766

GLib.io_add_watch(

2718

parent_pipe.fileno(),

2719

GLib.IO_IN | GLib.IO_HUP,

2767

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

2768

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

2720

2769

functools.partial(self.handle_ipc,

2721

2770

parent_pipe=parent_pipe,

2722

2771

proc=proc,

2725

2774

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

2726

2775

# same fileno

2727

2776

return False

2728

if command == 'funcall':

2777

if command == "funcall":

2729

2778

funcname = request[1]

2730

2779

args = request[2]

2731

2780

kwargs = request[3]

2732

2781

2733

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

2782

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

2734

2783

funcname)(*args,

2735

2784

**kwargs)))

2736

2785

2737

if command == 'getattr':

2786

if command == "getattr":

2738

2787

attrname = request[1]

2739

2788

if isinstance(client_object.__getattribute__(attrname),

2740

collections.Callable):

2741

parent_pipe.send(('function', ))

2789

collections.abc.Callable):

2790

parent_pipe.send(("function", ))

2742

2791

else:

2743

2792

parent_pipe.send((

2744

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

2793

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

2745

2794

2746

if command == 'setattr':

2795

if command == "setattr":

2747

2796

attrname = request[1]

2748

2797

value = request[2]

2749

2798

setattr(client_object, attrname, value)

2754

2803

def rfc3339_duration_to_delta(duration):

2755

2804

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

2756

2805

2757

>>> rfc3339_duration_to_delta("P7D")

2758

datetime.timedelta(7)

2759

>>> rfc3339_duration_to_delta("PT60S")

2760

datetime.timedelta(0, 60)

2761

>>> rfc3339_duration_to_delta("PT60M")

2762

datetime.timedelta(0, 3600)

2763

>>> rfc3339_duration_to_delta("PT24H")

2764

datetime.timedelta(1)

2765

>>> rfc3339_duration_to_delta("P1W")

2766

datetime.timedelta(7)

2767

>>> rfc3339_duration_to_delta("PT5M30S")

2768

datetime.timedelta(0, 330)

2769

>>> rfc3339_duration_to_delta("P1DT3M20S")

2770

datetime.timedelta(1, 200)

2806

>>> timedelta = datetime.timedelta

2807

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

2808

True

2809

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

2810

True

2811

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

2812

True

2813

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

2814

True

2815

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

2816

True

2817

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

2818

True

2819

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

2820

True

2821

>>> del timedelta

2771

2822

"""

2772

2823

2773

2824

# Parsing an RFC 3339 duration with regular expressions is not

2853

2904

def string_to_delta(interval):

2854

2905

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

2855

2906

2856

>>> string_to_delta('7d')

2857

datetime.timedelta(7)

2858

>>> string_to_delta('60s')

2859

datetime.timedelta(0, 60)

2860

>>> string_to_delta('60m')

2861

datetime.timedelta(0, 3600)

2862

>>> string_to_delta('24h')

2863

datetime.timedelta(1)

2864

>>> string_to_delta('1w')

2865

datetime.timedelta(7)

2866

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

2867

datetime.timedelta(0, 330)

2907

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

2908

True

2909

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

2910

True

2911

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

2912

True

2913

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

2914

True

2915

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

2916

True

2917

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

2918

True

2868

2919

"""

2869

2920

2870

2921

try:

2972

3023

2973

3024

options = parser.parse_args()

2974

3025

2975

if options.check:

2976

import doctest

2977

fail_count, test_count = doctest.testmod()

2978

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

2979

2980

3026

# Default values for config file for server-global settings

2981

3027

if gnutls.has_rawpk:

2982

3028

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

3078

3124

3079

3125

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

3080

3126

syslogger.setFormatter(

3081

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

3082

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

3127

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

3128

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

3083

3129

server_settings["servicename"])))

3084

3130

3085

3131

# Parse config file with clients

3109

3155

try:

3110

3156

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

3111

3157

except IOError as e:

3112

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

3113

exc_info=e)

3158

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

3159

exc_info=e)

3114

3160

3115

3161

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

3116

3162

("mandos", "mandos"),

3127

3173

try:

3128

3174

os.setgid(gid)

3129

3175

os.setuid(uid)

3130

if debug:

3131

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

3132

gid))

3176

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

3133

3177

except OSError as error:

3134

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

3135

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

3178

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

3179

os.strerror(error.errno))

3136

3180

if error.errno != errno.EPERM:

3137

3181

raise

3138

3182

3145

3189

3146

3190

@gnutls.log_func

3147

3191

def debug_gnutls(level, string):

3148

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

3192

log.debug("GnuTLS: %s",

3193

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

3149

3194

3150

3195

gnutls.global_set_log_function(debug_gnutls)

3151

3196

3180

3225

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

3181

3226

do_not_queue=True)

3182

3227

except dbus.exceptions.DBusException as e:

3183

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

3228

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

3184

3229

use_dbus = False

3185

3230

server_settings["use_dbus"] = False

3186

3231

tcp_server.use_dbus = False

3245

3290

if isinstance(s, bytes)

3246

3291

else s) for s in

3247

3292

value["client_structure"]]

3248

# .name & .host

3249

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

3293

# .name, .host, and .checker_command

3294

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

3250

3295

if isinstance(value[k], bytes):

3251

3296

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

3252

3297

if "key_id" not in value:

3262

3307

for key, value in

3263

3308

bytes_old_client_settings.items()}

3264

3309

del bytes_old_client_settings

3265

# .host

3310

# .host and .checker_command

3266

3311

for value in old_client_settings.values():

3267

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

3268

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

3269

.decode("utf-8"))

3312

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

3313

if isinstance(value[attribute], bytes):

3314

value[attribute] = (value[attribute]

3315

.decode("utf-8"))

3270

3316

os.remove(stored_state_path)

3271

3317

except IOError as e:

3272

3318

if e.errno == errno.ENOENT:

3273

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

3274

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

3319

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

3320

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

3275

3321

else:

3276

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

3277

exc_info=e)

3322

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

3323

exc_info=e)

3278

3324

raise

3279

3325

except EOFError as e:

3280

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

3281

"EOFError:",

3282

exc_info=e)

3326

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

3327

exc_info=e)

3283

3328

3284

3329

with PGPEngine() as pgp:

3285

3330

for client_name, client in clients_data.items():

3312

3357

if client["enabled"]:

3313

3358

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

3314

3359

if not client["last_checked_ok"]:

3315

logger.warning(

3316

"disabling client {} - Client never "

3317

"performed a successful checker".format(

3318

client_name))

3360

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

3361

" never performed a successful"

3362

" checker", client_name)

3319

3363

client["enabled"] = False

3320

3364

elif client["last_checker_status"] != 0:

3321

logger.warning(

3322

"disabling client {} - Client last"

3323

" checker failed with error code"

3324

" {}".format(

3325

client_name,

3326

client["last_checker_status"]))

3365

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

3366

" last checker failed with error"

3367

" code %s", client_name,

3368

client["last_checker_status"])

3327

3369

client["enabled"] = False

3328

3370

else:

3329

3371

client["expires"] = (

3330

3372

datetime.datetime.utcnow()

3331

3373

+ client["timeout"])

3332

logger.debug("Last checker succeeded,"

3333

" keeping {} enabled".format(

3334

client_name))

3374

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

3375

" enabled", client_name)

3335

3376

try:

3336

3377

client["secret"] = pgp.decrypt(

3337

3378

client["encrypted_secret"],

3338

3379

client_settings[client_name]["secret"])

3339

3380

except PGPError:

3340

3381

# If decryption fails, we use secret from new settings

3341

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

3342

client_name))

3382

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

3383

client_name)

3343

3384

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

3344

3385

["secret"])

3345

3386

3359

3400

server_settings=server_settings)

3360

3401

3361

3402

if not tcp_server.clients:

3362

logger.warning("No clients defined")

3403

log.warning("No clients defined")

3363

3404

3364

3405

if not foreground:

3365

3406

if pidfile is not None:

3368

3409

with pidfile:

3369

3410

print(pid, file=pidfile)

3370

3411

except IOError:

3371

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

3372

pidfilename, pid)

3412

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

3413

pidfilename, pid)

3373

3414

del pidfile

3374

3415

del pidfilename

3375

3416

3525

3566

3526

3567

try:

3527

3568

with tempfile.NamedTemporaryFile(

3528

mode='wb',

3569

mode="wb",

3529

3570

suffix=".pickle",

3530

prefix='clients-',

3571

prefix="clients-",

3531

3572

dir=os.path.dirname(stored_state_path),

3532

3573

delete=False) as stored_state:

3533

3574

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

3541

3582

except NameError:

3542

3583

pass

3543

3584

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

3544

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

3545

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

3585

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

3586

os.strerror(e.errno))

3546

3587

else:

3547

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

3548

exc_info=e)

3588

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

3589

exc_info=e)

3549

3590

raise

3550

3591

3551

3592

# Delete all clients, and settings from config

3577

3618

if zeroconf:

3578

3619

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

3579

3620

if use_ipv6:

3580

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

3581

" flowinfo %d, scope_id %d",

3582

*tcp_server.socket.getsockname())

3621

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

3622

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

3583

3623

else: # IPv4

3584

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

3585

*tcp_server.socket.getsockname())

3624

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

3625

*tcp_server.socket.getsockname())

3586

3626

3587

3627

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

3588

3628

3592

3632

try:

3593

3633

service.activate()

3594

3634

except dbus.exceptions.DBusException as error:

3595

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

3635

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

3596

3636

cleanup()

3597

3637

sys.exit(1)

3598

3638

# End of Avahi example code

3599

3639

3600

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

3601

lambda *args, **kwargs:

3602

(tcp_server.handle_request

3603

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

3640

GLib.io_add_watch(

3641

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

3642

GLib.PRIORITY_DEFAULT, GLib.IO_IN,

3643

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

3644

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

3604

3645

3605

logger.debug("Starting main loop")

3646

log.debug("Starting main loop")

3606

3647

main_loop.run()

3607

3648

except AvahiError as error:

3608

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

3649

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

3609

3650

cleanup()

3610

3651

sys.exit(1)

3611

3652

except KeyboardInterrupt:

3612

3653

if debug:

3613

3654

print("", file=sys.stderr)

3614

logger.debug("Server received KeyboardInterrupt")

3615

logger.debug("Server exiting")

3655

log.debug("Server received KeyboardInterrupt")

3656

log.debug("Server exiting")

3616

3657

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

3617

3658

cleanup()

3618

3659

3619

3620

if __name__ == '__main__':

3621

main()

3660

3661

def parse_test_args():

3662

# type: () -> argparse.Namespace

3663

parser = argparse.ArgumentParser(add_help=False)

3664

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

3665

parser.add_argument("--prefix", )

3666

args, unknown_args = parser.parse_known_args()

3667

if args.check:

3668

# Remove test options from sys.argv

3669

sys.argv[1:] = unknown_args

3670

return args

3671

3672

# Add all tests from doctest strings

3673

def load_tests(loader, tests, none):

3674

import doctest

3675

tests.addTests(doctest.DocTestSuite())

3676

return tests

3677

3678

if __name__ == "__main__":

3679

options = parse_test_args()

3680

try:

3681

if options.check:

3682

extra_test_prefix = options.prefix

3683

if extra_test_prefix is not None:

3684

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

3685

.result.wasSuccessful()):

3686

sys.exit(1)

3687

class ExtraTestLoader(unittest.TestLoader):

3688

testMethodPrefix = extra_test_prefix

3689

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

3690

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

3691

else:

3692

unittest.main(argv=[""])

3693

else:

3694

main()

3695

finally:

3696

logging.shutdown()

3697

3698

# Local Variables:

3699

# run-tests:

3700

# (lambda (&optional extra)

3701

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

3702

# extra))

3703

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

3704

# (funcall remove-test-window)

3705

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

3706

# run-tests-in-test-buffer:

3707

# (lambda (dir &optional extra)

3708

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

3709

# (setq buffer-read-only nil

3710

# default-directory dir)

3711

# (erase-buffer)

3712

# (compilation-mode))

3713

# (let ((process-result

3714

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

3715

# (process-file-shell-command

3716

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

3717

# (and (numberp process-result)

3718

# (= process-result 0))))

3719

# get-command-line:

3720

# (lambda (&optional extra)

3721

# (let ((quoted-script

3722

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

3723

# (format

3724

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

3725

# quoted-script)))

3726

# get-script-name:

3727

# (lambda ()

3728

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

3729

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

3730

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

3731

# (buffer-file-name))))

3732

# remove-test-window:

3733

# (lambda ()

3734

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

3735

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

3736

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

3737

# (lambda ()

3738

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

3739

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

3740

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

3741

# (display-buffer-overriding-action

3742

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

3743

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

3744

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

3745

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

3746

# eval:

3747

# (progn

3748

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

3749

# (funcall run-tests t)))

3750

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

3751

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

3752

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

3753

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

3754

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

3755

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

3756

# End: