/mandos/trunk : revision 1264

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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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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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# 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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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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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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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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OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h

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# Types

543

class session_int(ctypes.Structure):

565

class _session_int(ctypes.Structure):

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566

_fields_ = []

545

session_t = ctypes.POINTER(session_int)

567

session_t = ctypes.POINTER(_session_int)

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568

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569

class certificate_credentials_st(ctypes.Structure):

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_fields_ = []

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573

certificate_type_t = ctypes.c_int

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574

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575

class datum_t(ctypes.Structure):

554

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

555

('size', ctypes.c_uint)]

576

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

577

("size", ctypes.c_uint)]

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578

557

class openpgp_crt_int(ctypes.Structure):

579

class _openpgp_crt_int(ctypes.Structure):

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580

_fields_ = []

559

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)

562

584

credentials_type_t = ctypes.c_int

571

593

# gnutls.strerror()

572

594

self.code = code

573

595

if message is None and code is not None:

574

message = gnutls.strerror(code)

596

message = gnutls.strerror(code).decode(

597

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

575

598

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

576

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message, *args)

577

600

578

601

class CertificateSecurityError(Error):

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602

pass

580

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

581

629

# Classes

582

class Credentials:

630

class Credentials(With_from_param):

583

631

def __init__(self):

584

self._c_object = gnutls.certificate_credentials_t()

585

gnutls.certificate_allocate_credentials(

586

ctypes.byref(self._c_object))

632

self._as_parameter_ = gnutls.certificate_credentials_t()

633

gnutls.certificate_allocate_credentials(self)

587

634

self.type = gnutls.CRD_CERTIFICATE

588

635

589

636

def __del__(self):

590

gnutls.certificate_free_credentials(self._c_object)

637

gnutls.certificate_free_credentials(self)

591

638

592

class ClientSession:

639

class ClientSession(With_from_param):

593

640

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

594

self._c_object = gnutls.session_t()

641

self._as_parameter_ = gnutls.session_t()

595

642

gnutls_flags = gnutls.CLIENT

596

643

if gnutls.check_version(b"3.5.6"):

597

644

gnutls_flags |= gnutls.NO_TICKETS

598

645

if gnutls.has_rawpk:

599

646

gnutls_flags |= gnutls.ENABLE_RAWPK

600

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

647

gnutls.init(self, gnutls_flags)

601

648

del gnutls_flags

602

gnutls.set_default_priority(self._c_object)

603

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

604

gnutls.handshake_set_private_extensions(self._c_object,

605

True)

649

gnutls.set_default_priority(self)

650

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

651

gnutls.handshake_set_private_extensions(self, True)

606

652

self.socket = socket

607

653

if credentials is None:

608

654

credentials = gnutls.Credentials()

609

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

610

ctypes.cast(credentials._c_object,

611

ctypes.c_void_p))

655

gnutls.credentials_set(self, credentials.type,

656

credentials)

612

657

self.credentials = credentials

613

658

614

659

def __del__(self):

615

gnutls.deinit(self._c_object)

660

gnutls.deinit(self)

616

661

617

662

def handshake(self):

618

return gnutls.handshake(self._c_object)

663

return gnutls.handshake(self)

619

664

620

665

def send(self, data):

621

666

data = bytes(data)

622

667

data_len = len(data)

623

668

while data_len > 0:

624

data_len -= gnutls.record_send(self._c_object,

625

data[-data_len:],

669

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

626

670

data_len)

627

671

628

672

def bye(self):

629

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

673

return gnutls.bye(self, gnutls.SHUT_RDWR)

630

674

631

675

# Error handling functions

632

676

def _error_code(result):

633

677

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

634

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

635

if result >= 0:

678

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

679

if result >= gnutls.E_SUCCESS:

636

680

return result

637

681

if result == gnutls.E_NO_CERTIFICATE_FOUND:

638

682

raise gnutls.CertificateSecurityError(code=result)

639

683

raise gnutls.Error(code=result)

640

684

641

def _retry_on_error(result, func, arguments):

685

def _retry_on_error(result, func, arguments,

686

_error_code=_error_code):

642

687

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

643

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

644

while result < 0:

688

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

689

while result < gnutls.E_SUCCESS:

645

690

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

646

691

return _error_code(result)

647

692

result = func(*arguments)

652

697

653

698

# Functions

654

699

priority_set_direct = _library.gnutls_priority_set_direct

655

priority_set_direct.argtypes = [session_t, ctypes.c_char_p,

700

priority_set_direct.argtypes = [ClientSession, ctypes.c_char_p,

656

701

ctypes.POINTER(ctypes.c_char_p)]

657

702

priority_set_direct.restype = _error_code

658

703

659

704

init = _library.gnutls_init

660

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

705

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

661

706

init.restype = _error_code

662

707

663

708

set_default_priority = _library.gnutls_set_default_priority

664

set_default_priority.argtypes = [session_t]

709

set_default_priority.argtypes = [ClientSession]

665

710

set_default_priority.restype = _error_code

666

711

667

712

record_send = _library.gnutls_record_send

668

record_send.argtypes = [session_t, ctypes.c_void_p,

713

record_send.argtypes = [ClientSession, ctypes.c_void_p,

669

714

ctypes.c_size_t]

670

715

record_send.restype = ctypes.c_ssize_t

671

716

record_send.errcheck = _retry_on_error

673

718

certificate_allocate_credentials = (

674

719

_library.gnutls_certificate_allocate_credentials)

675

720

certificate_allocate_credentials.argtypes = [

676

ctypes.POINTER(certificate_credentials_t)]

721

PointerTo(Credentials)]

677

722

certificate_allocate_credentials.restype = _error_code

678

723

679

724

certificate_free_credentials = (

680

725

_library.gnutls_certificate_free_credentials)

681

certificate_free_credentials.argtypes = [

682

certificate_credentials_t]

726

certificate_free_credentials.argtypes = [Credentials]

683

727

certificate_free_credentials.restype = None

684

728

685

729

handshake_set_private_extensions = (

686

730

_library.gnutls_handshake_set_private_extensions)

687

handshake_set_private_extensions.argtypes = [session_t,

731

handshake_set_private_extensions.argtypes = [ClientSession,

688

732

ctypes.c_int]

689

733

handshake_set_private_extensions.restype = None

690

734

691

735

credentials_set = _library.gnutls_credentials_set

692

credentials_set.argtypes = [session_t, credentials_type_t,

693

ctypes.c_void_p]

736

credentials_set.argtypes = [ClientSession, credentials_type_t,

737

CastToVoidPointer(Credentials)]

694

738

credentials_set.restype = _error_code

695

739

696

740

strerror = _library.gnutls_strerror

698

742

strerror.restype = ctypes.c_char_p

699

743

700

744

certificate_type_get = _library.gnutls_certificate_type_get

701

certificate_type_get.argtypes = [session_t]

745

certificate_type_get.argtypes = [ClientSession]

702

746

certificate_type_get.restype = _error_code

703

747

704

748

certificate_get_peers = _library.gnutls_certificate_get_peers

705

certificate_get_peers.argtypes = [session_t,

749

certificate_get_peers.argtypes = [ClientSession,

706

750

ctypes.POINTER(ctypes.c_uint)]

707

751

certificate_get_peers.restype = ctypes.POINTER(datum_t)

708

752

715

759

global_set_log_function.restype = None

716

760

717

761

deinit = _library.gnutls_deinit

718

deinit.argtypes = [session_t]

762

deinit.argtypes = [ClientSession]

719

763

deinit.restype = None

720

764

721

765

handshake = _library.gnutls_handshake

722

handshake.argtypes = [session_t]

723

handshake.restype = _error_code

766

handshake.argtypes = [ClientSession]

767

handshake.restype = ctypes.c_int

724

768

handshake.errcheck = _retry_on_error

725

769

726

770

transport_set_ptr = _library.gnutls_transport_set_ptr

727

transport_set_ptr.argtypes = [session_t, transport_ptr_t]

771

transport_set_ptr.argtypes = [ClientSession, transport_ptr_t]

728

772

transport_set_ptr.restype = None

729

773

730

774

bye = _library.gnutls_bye

731

bye.argtypes = [session_t, close_request_t]

732

bye.restype = _error_code

775

bye.argtypes = [ClientSession, close_request_t]

776

bye.restype = ctypes.c_int

733

777

bye.errcheck = _retry_on_error

734

778

735

779

check_version = _library.gnutls_check_version

752

796

753

797

x509_crt_fmt_t = ctypes.c_int

754

798

755

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

799

# All the function declarations below are from

800

# gnutls/abstract.h

756

801

pubkey_init = _library.gnutls_pubkey_init

757

802

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

758

803

pubkey_init.restype = _error_code

772

817

pubkey_deinit.argtypes = [pubkey_t]

773

818

pubkey_deinit.restype = None

774

819

else:

775

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

820

# All the function declarations below are from

821

# gnutls/openpgp.h

776

822

777

823

openpgp_crt_init = _library.gnutls_openpgp_crt_init

778

824

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

784

830

openpgp_crt_fmt_t]

785

831

openpgp_crt_import.restype = _error_code

786

832

787

openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self

788

openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,

789

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

]

790

840

openpgp_crt_verify_self.restype = _error_code

791

841

792

842

openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit

803

853

804

854

if check_version(b"3.6.4"):

805

855

certificate_type_get2 = _library.gnutls_certificate_type_get2

806

certificate_type_get2.argtypes = [session_t, ctypes.c_int]

856

certificate_type_get2.argtypes = [ClientSession, ctypes.c_int]

807

857

certificate_type_get2.restype = _error_code

808

858

809

859

# Remove non-public functions

825

875

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

826

876

827

877

Attributes:

828

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

878

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

829

879

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

830

880

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

831

881

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

832

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

882

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

833

883

running.

834

884

checker_callback_tag: a GLib event source tag, or None

835

885

checker_command: string; External command which is run to check

959

1009

self.last_enabled = None

960

1010

self.expires = None

961

1011

962

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

963

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

964

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)

965

1015

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

966

1016

datetime.datetime.utcnow())

967

1017

1006

1056

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

1007

1057

return False

1008

1058

if not quiet:

1009

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

1059

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

1010

1060

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

1011

1061

GLib.source_remove(self.disable_initiator_tag)

1012

1062

self.disable_initiator_tag = None

1030

1080

if self.checker_initiator_tag is not None:

1031

1081

GLib.source_remove(self.checker_initiator_tag)

1032

1082

self.checker_initiator_tag = GLib.timeout_add(

1033

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

1083

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

1084

+ 1)),

1034

1085

self.start_checker)

1035

1086

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

1036

1087

if self.disable_initiator_tag is not None:

1046

1097

# Read return code from connection (see call_pipe)

1047

1098

returncode = connection.recv()

1048

1099

connection.close()

1049

self.checker.join()

1100

if self.checker is not None:

1101

self.checker.join()

1050

1102

self.checker_callback_tag = None

1051

1103

self.checker = None

1052

1104

1054

1106

self.last_checker_status = returncode

1055

1107

self.last_checker_signal = None

1056

1108

if self.last_checker_status == 0:

1057

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

1058

vars(self))

1109

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

1059

1110

self.checked_ok()

1060

1111

else:

1061

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

1112

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

1062

1113

else:

1063

1114

self.last_checker_status = -1

1064

1115

self.last_checker_signal = -returncode

1065

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

1066

vars(self))

1116

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

1067

1117

return False

1068

1118

1069

1119

def checked_ok(self):

1103

1153

# should be.

1104

1154

1105

1155

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

1106

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

1156

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

1107

1157

self.checker.join()

1108

1158

self.checker = None

1109

1159

# Start a new checker if needed

1110

1160

if self.checker is None:

1111

1161

# Escape attributes for the shell

1112

1162

escaped_attrs = {

1113

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

1163

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

1114

1164

for attr in self.runtime_expansions}

1115

1165

try:

1116

1166

command = self.checker_command % escaped_attrs

1117

1167

except TypeError as error:

1118

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

1119

self.checker_command,

1120

exc_info=error)

1168

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

1169

self.checker_command, exc_info=error)

1121

1170

return True # Try again later

1122

1171

self.current_checker_command = command

1123

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

1124

self.name)

1172

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

1125

1173

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

1126

1174

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

1127

1175

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

1143

1191

kwargs=popen_args)

1144

1192

self.checker.start()

1145

1193

self.checker_callback_tag = GLib.io_add_watch(

1146

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

1194

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

1195

GLib.PRIORITY_DEFAULT, GLib.IO_IN,

1147

1196

self.checker_callback, pipe[0], command)

1148

1197

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

1149

1198

return True

1155

1204

self.checker_callback_tag = None

1156

1205

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

1157

1206

return

1158

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

1207

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

1159

1208

self.checker.terminate()

1160

1209

self.checker = None

1161

1210

1188

1237

func._dbus_name = func.__name__

1189

1238

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

1190

1239

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

1191

func._dbus_get_args_options = {'byte_arrays': byte_arrays}

1240

func._dbus_get_args_options = {"byte_arrays": byte_arrays}

1192

1241

return func

1193

1242

1194

1243

return decorator

1283

1332

1284

1333

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1285

1334

out_signature="s",

1286

path_keyword='object_path',

1287

connection_keyword='connection')

1335

path_keyword="object_path",

1336

connection_keyword="connection")

1288

1337

def Introspect(self, object_path, connection):

1289

1338

"""Overloading of standard D-Bus method.

1290

1339

1388

document.unlink()

1340

1389

except (AttributeError, xml.dom.DOMException,

1341

1390

xml.parsers.expat.ExpatError) as error:

1342

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

1343

exc_info=error)

1391

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

1392

exc_info=error)

1344

1393

return xmlstring

1345

1394

1346

1395

1404

1453

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

1405

1454

"'ay' signature {!r}"

1406

1455

.format(prop._dbus_signature))

1407

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

1408

for byte in value))

1456

value = dbus.ByteArray(bytes(value))

1409

1457

prop(value)

1410

1458

1411

1459

@dbus.service.method(dbus.PROPERTIES_IFACE,

1444

1492

1445

1493

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1446

1494

out_signature="s",

1447

path_keyword='object_path',

1448

connection_keyword='connection')

1495

path_keyword="object_path",

1496

connection_keyword="connection")

1449

1497

def Introspect(self, object_path, connection):

1450

1498

"""Overloading of standard D-Bus method.

1451

1499

1507

1555

document.unlink()

1508

1556

except (AttributeError, xml.dom.DOMException,

1509

1557

xml.parsers.expat.ExpatError) as error:

1510

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

1511

exc_info=error)

1558

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

1559

exc_info=error)

1512

1560

return xmlstring

1513

1561

1514

1562

1546

1594

1547

1595

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1548

1596

out_signature="s",

1549

path_keyword='object_path',

1550

connection_keyword='connection')

1597

path_keyword="object_path",

1598

connection_keyword="connection")

1551

1599

def Introspect(self, object_path, connection):

1552

1600

"""Overloading of standard D-Bus method.

1553

1601

1578

1626

document.unlink()

1579

1627

except (AttributeError, xml.dom.DOMException,

1580

1628

xml.parsers.expat.ExpatError) as error:

1581

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

1582

exc_info=error)

1629

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

1630

exc_info=error)

1583

1631

return xmlstring

1584

1632

1585

1633

2219

2267

class ProxyClient:

2220

2268

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

2221

2269

self._pipe = child_pipe

2222

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

2270

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

2223

2271

if not self._pipe.recv():

2224

2272

raise KeyError(key_id or fpr)

2225

2273

2226

2274

def __getattribute__(self, name):

2227

if name == '_pipe':

2275

if name == "_pipe":

2228

2276

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

2229

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

2277

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

2230

2278

data = self._pipe.recv()

2231

if data[0] == 'data':

2279

if data[0] == "data":

2232

2280

return data[1]

2233

if data[0] == 'function':

2281

if data[0] == "function":

2234

2282

2235

2283

def func(*args, **kwargs):

2236

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

2284

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

2237

2285

return self._pipe.recv()[1]

2238

2286

2239

2287

return func

2240

2288

2241

2289

def __setattr__(self, name, value):

2242

if name == '_pipe':

2290

if name == "_pipe":

2243

2291

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

2244

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

2292

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

2245

2293

2246

2294

2247

2295

class ClientHandler(socketserver.BaseRequestHandler, object):

2252

2300

2253

2301

def handle(self):

2254

2302

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

2255

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

2256

str(self.client_address))

2257

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

2258

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())

2259

2306

2260

2307

session = gnutls.ClientSession(self.request)

2261

2308

2262

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

2309

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

2263

2310

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

2264

2311

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

2265

2312

# "+DHE-DSS"))

2267

2314

priority = self.server.gnutls_priority

2268

2315

if priority is None:

2269

2316

priority = "NORMAL"

2270

gnutls.priority_set_direct(session._c_object,

2271

priority.encode("utf-8"),

2272

None)

2317

gnutls.priority_set_direct(session,

2318

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

2273

2319

2274

2320

# Start communication using the Mandos protocol

2275

2321

# Get protocol number

2276

2322

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

2277

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

2323

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

2278

2324

try:

2279

2325

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

2280

2326

raise RuntimeError(line)

2281

2327

except (ValueError, IndexError, RuntimeError) as error:

2282

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

2328

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

2283

2329

return

2284

2330

2285

2331

# Start GnuTLS connection

2286

2332

try:

2287

2333

session.handshake()

2288

2334

except gnutls.Error as error:

2289

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

2335

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

2290

2336

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

2291

2337

# established. Just abandon the request.

2292

2338

return

2293

logger.debug("Handshake succeeded")

2339

log.debug("Handshake succeeded")

2294

2340

2295

2341

approval_required = False

2296

2342

try:

2300

2346

key_id = self.key_id(

2301

2347

self.peer_certificate(session))

2302

2348

except (TypeError, gnutls.Error) as error:

2303

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

2349

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

2304

2350

return

2305

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

2351

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

2352

key_id.decode("utf-8",

2353

errors="replace"))

2306

2354

2307

2355

else:

2308

2356

key_id = b""

2310

2358

fpr = self.fingerprint(

2311

2359

self.peer_certificate(session))

2312

2360

except (TypeError, gnutls.Error) as error:

2313

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

2361

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

2314

2362

return

2315

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

2363

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

2316

2364

2317

2365

try:

2318

2366

client = ProxyClient(child_pipe, key_id, fpr,

2327

2375

2328

2376

while True:

2329

2377

if not client.enabled:

2330

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

2331

client.name)

2378

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

2332

2379

if self.server.use_dbus:

2333

2380

# Emit D-Bus signal

2334

2381

client.Rejected("Disabled")

2338

2385

# We are approved or approval is disabled

2339

2386

break

2340

2387

elif client.approved is None:

2341

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

2342

client.name)

2388

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

2389

client.name)

2343

2390

if self.server.use_dbus:

2344

2391

# Emit D-Bus signal

2345

2392

client.NeedApproval(

2346

2393

client.approval_delay.total_seconds()

2347

2394

* 1000, client.approved_by_default)

2348

2395

else:

2349

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

2350

client.name)

2396

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

2397

client.name)

2351

2398

if self.server.use_dbus:

2352

2399

# Emit D-Bus signal

2353

2400

client.Rejected("Denied")

2361

2408

time2 = datetime.datetime.now()

2362

2409

if (time2 - time) >= delay:

2363

2410

if not client.approved_by_default:

2364

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

2365

" waiting for approval",

2366

client.name)

2411

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

2412

" waiting for approval",

2413

client.name)

2367

2414

if self.server.use_dbus:

2368

2415

# Emit D-Bus signal

2369

2416

client.Rejected("Approval timed out")

2376

2423

try:

2377

2424

session.send(client.secret)

2378

2425

except gnutls.Error as error:

2379

logger.warning("gnutls send failed",

2380

exc_info=error)

2426

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

2381

2427

return

2382

2428

2383

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

2429

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

2384

2430

# bump the timeout using extended_timeout

2385

2431

client.bump_timeout(client.extended_timeout)

2386

2432

if self.server.use_dbus:

2393

2439

try:

2394

2440

session.bye()

2395

2441

except gnutls.Error as error:

2396

logger.warning("GnuTLS bye failed",

2397

exc_info=error)

2442

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

2398

2443

2399

2444

@staticmethod

2400

2445

def peer_certificate(session):

2401

2446

"Return the peer's certificate as a bytestring"

2402

2447

try:

2403

cert_type = gnutls.certificate_type_get2(session._c_object,

2404

gnutls.CTYPE_PEERS)

2448

cert_type = gnutls.certificate_type_get2(

2449

session, gnutls.CTYPE_PEERS)

2405

2450

except AttributeError:

2406

cert_type = gnutls.certificate_type_get(session._c_object)

2451

cert_type = gnutls.certificate_type_get(session)

2407

2452

if gnutls.has_rawpk:

2408

2453

valid_cert_types = frozenset((gnutls.CRT_RAWPK,))

2409

2454

else:

2410

2455

valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))

2411

2456

# If not a valid certificate type...

2412

2457

if cert_type not in valid_cert_types:

2413

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

2414

valid_cert_types)

2458

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

2459

valid_cert_types)

2415

2460

# ...return invalid data

2416

2461

return b""

2417

2462

list_size = ctypes.c_uint(1)

2418

2463

cert_list = (gnutls.certificate_get_peers

2419

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

2464

(session, ctypes.byref(list_size)))

2420

2465

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

2421

2466

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

2422

2467

if list_size.value == 0:

2444

2489

buf = ctypes.create_string_buffer(32)

2445

2490

buf_len = ctypes.c_size_t(len(buf))

2446

2491

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

2447

gnutls.pubkey_get_key_id(pubkey,

2448

gnutls.KEYID_USE_SHA256,

2449

ctypes.cast(ctypes.byref(buf),

2450

ctypes.POINTER(ctypes.c_ubyte)),

2451

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))

2452

2498

# Deinit the certificate

2453

2499

gnutls.pubkey_deinit(pubkey)

2454

2500

2535

2581

2536

2582

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

2537

2583

socketserver.TCPServer):

2538

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

2584

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

2539

2585

2540

2586

Attributes:

2541

2587

enabled: Boolean; whether this server is activated yet

2592

2638

if SO_BINDTODEVICE is None:

2593

2639

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

2594

2640

# common enough.

2595

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

2641

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

2596

2642

SO_BINDTODEVICE = 25

2597

2643

try:

2598

2644

self.socket.setsockopt(

2600

2646

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

2601

2647

except socket.error as error:

2602

2648

if error.errno == errno.EPERM:

2603

logger.error("No permission to bind to"

2604

" interface %s", self.interface)

2649

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

2650

self.interface)

2605

2651

elif error.errno == errno.ENOPROTOOPT:

2606

logger.error("SO_BINDTODEVICE not available;"

2607

" cannot bind to interface %s",

2608

self.interface)

2652

log.error("SO_BINDTODEVICE not available; cannot"

2653

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

2609

2654

elif error.errno == errno.ENODEV:

2610

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

2611

" cannot bind", self.interface)

2655

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

2656

" bind", self.interface)

2612

2657

else:

2613

2658

raise

2614

2659

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

2673

2718

def add_pipe(self, parent_pipe, proc):

2674

2719

# Call "handle_ipc" for both data and EOF events

2675

2720

GLib.io_add_watch(

2676

parent_pipe.fileno(),

2677

GLib.IO_IN | GLib.IO_HUP,

2721

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

2722

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

2678

2723

functools.partial(self.handle_ipc,

2679

2724

parent_pipe=parent_pipe,

2680

2725

proc=proc))

2693

2738

request = parent_pipe.recv()

2694

2739

command = request[0]

2695

2740

2696

if command == 'init':

2741

if command == "init":

2697

2742

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

2698

2743

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

2699

2744

address = request[3]

2700

2745

2701

2746

for c in self.clients.values():

2702

if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":

2747

if key_id == ("E3B0C44298FC1C149AFBF4C8996FB924"

2748

"27AE41E4649B934CA495991B7852B855"):

2703

2749

continue

2704

2750

if key_id and c.key_id == key_id:

2705

2751

client = c

2708

2754

client = c

2709

2755

break

2710

2756

else:

2711

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

2712

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

2757

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

2758

" %s", key_id or fpr, address)

2713

2759

if self.use_dbus:

2714

2760

# Emit D-Bus signal

2715

2761

mandos_dbus_service.ClientNotFound(key_id or fpr,

2718

2764

return False

2719

2765

2720

2766

GLib.io_add_watch(

2721

parent_pipe.fileno(),

2722

GLib.IO_IN | GLib.IO_HUP,

2767

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

2768

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

2723

2769

functools.partial(self.handle_ipc,

2724

2770

parent_pipe=parent_pipe,

2725

2771

proc=proc,

2728

2774

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

2729

2775

# same fileno

2730

2776

return False

2731

if command == 'funcall':

2777

if command == "funcall":

2732

2778

funcname = request[1]

2733

2779

args = request[2]

2734

2780

kwargs = request[3]

2735

2781

2736

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

2782

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

2737

2783

funcname)(*args,

2738

2784

**kwargs)))

2739

2785

2740

if command == 'getattr':

2786

if command == "getattr":

2741

2787

attrname = request[1]

2742

2788

if isinstance(client_object.__getattribute__(attrname),

2743

collections.Callable):

2744

parent_pipe.send(('function', ))

2789

collections.abc.Callable):

2790

parent_pipe.send(("function", ))

2745

2791

else:

2746

2792

parent_pipe.send((

2747

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

2793

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

2748

2794

2749

if command == 'setattr':

2795

if command == "setattr":

2750

2796

attrname = request[1]

2751

2797

value = request[2]

2752

2798

setattr(client_object, attrname, value)

2757

2803

def rfc3339_duration_to_delta(duration):

2758

2804

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

2759

2805

2760

>>> rfc3339_duration_to_delta("P7D")

2761

datetime.timedelta(7)

2762

>>> rfc3339_duration_to_delta("PT60S")

2763

datetime.timedelta(0, 60)

2764

>>> rfc3339_duration_to_delta("PT60M")

2765

datetime.timedelta(0, 3600)

2766

>>> rfc3339_duration_to_delta("PT24H")

2767

datetime.timedelta(1)

2768

>>> rfc3339_duration_to_delta("P1W")

2769

datetime.timedelta(7)

2770

>>> rfc3339_duration_to_delta("PT5M30S")

2771

datetime.timedelta(0, 330)

2772

>>> rfc3339_duration_to_delta("P1DT3M20S")

2773

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

2774

2822

"""

2775

2823

2776

2824

# Parsing an RFC 3339 duration with regular expressions is not

2856

2904

def string_to_delta(interval):

2857

2905

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

2858

2906

2859

>>> string_to_delta('7d')

2860

datetime.timedelta(7)

2861

>>> string_to_delta('60s')

2862

datetime.timedelta(0, 60)

2863

>>> string_to_delta('60m')

2864

datetime.timedelta(0, 3600)

2865

>>> string_to_delta('24h')

2866

datetime.timedelta(1)

2867

>>> string_to_delta('1w')

2868

datetime.timedelta(7)

2869

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

2870

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

2871

2919

"""

2872

2920

2873

2921

try:

2975

3023

2976

3024

options = parser.parse_args()

2977

3025

2978

if options.check:

2979

import doctest

2980

fail_count, test_count = doctest.testmod()

2981

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

2982

2983

3026

# Default values for config file for server-global settings

2984

3027

if gnutls.has_rawpk:

2985

3028

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

3081

3124

3082

3125

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

3083

3126

syslogger.setFormatter(

3084

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

3085

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

3127

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

3128

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

3086

3129

server_settings["servicename"])))

3087

3130

3088

3131

# Parse config file with clients

3112

3155

try:

3113

3156

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

3114

3157

except IOError as e:

3115

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

3116

exc_info=e)

3158

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

3159

exc_info=e)

3117

3160

3118

3161

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

3119

3162

("mandos", "mandos"),

3130

3173

try:

3131

3174

os.setgid(gid)

3132

3175

os.setuid(uid)

3133

if debug:

3134

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

3135

gid))

3176

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

3136

3177

except OSError as error:

3137

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

3138

.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))

3139

3180

if error.errno != errno.EPERM:

3140

3181

raise

3141

3182

3148

3189

3149

3190

@gnutls.log_func

3150

3191

def debug_gnutls(level, string):

3151

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

3192

log.debug("GnuTLS: %s",

3193

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

3152

3194

3153

3195

gnutls.global_set_log_function(debug_gnutls)

3154

3196

3183

3225

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

3184

3226

do_not_queue=True)

3185

3227

except dbus.exceptions.DBusException as e:

3186

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

3228

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

3187

3229

use_dbus = False

3188

3230

server_settings["use_dbus"] = False

3189

3231

tcp_server.use_dbus = False

3248

3290

if isinstance(s, bytes)

3249

3291

else s) for s in

3250

3292

value["client_structure"]]

3251

# .name & .host

3252

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

3293

# .name, .host, and .checker_command

3294

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

3253

3295

if isinstance(value[k], bytes):

3254

3296

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

3255

3297

if "key_id" not in value:

3265

3307

for key, value in

3266

3308

bytes_old_client_settings.items()}

3267

3309

del bytes_old_client_settings

3268

# .host

3310

# .host and .checker_command

3269

3311

for value in old_client_settings.values():

3270

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

3271

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

3272

.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"))

3273

3316

os.remove(stored_state_path)

3274

3317

except IOError as e:

3275

3318

if e.errno == errno.ENOENT:

3276

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

3277

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

3319

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

3320

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

3278

3321

else:

3279

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

3280

exc_info=e)

3322

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

3323

exc_info=e)

3281

3324

raise

3282

3325

except EOFError as e:

3283

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

3284

"EOFError:",

3285

exc_info=e)

3326

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

3327

exc_info=e)

3286

3328

3287

3329

with PGPEngine() as pgp:

3288

3330

for client_name, client in clients_data.items():

3315

3357

if client["enabled"]:

3316

3358

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

3317

3359

if not client["last_checked_ok"]:

3318

logger.warning(

3319

"disabling client {} - Client never "

3320

"performed a successful checker".format(

3321

client_name))

3360

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

3361

" never performed a successful"

3362

" checker", client_name)

3322

3363

client["enabled"] = False

3323

3364

elif client["last_checker_status"] != 0:

3324

logger.warning(

3325

"disabling client {} - Client last"

3326

" checker failed with error code"

3327

" {}".format(

3328

client_name,

3329

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"])

3330

3369

client["enabled"] = False

3331

3370

else:

3332

3371

client["expires"] = (

3333

3372

datetime.datetime.utcnow()

3334

3373

+ client["timeout"])

3335

logger.debug("Last checker succeeded,"

3336

" keeping {} enabled".format(

3337

client_name))

3374

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

3375

" enabled", client_name)

3338

3376

try:

3339

3377

client["secret"] = pgp.decrypt(

3340

3378

client["encrypted_secret"],

3341

3379

client_settings[client_name]["secret"])

3342

3380

except PGPError:

3343

3381

# If decryption fails, we use secret from new settings

3344

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

3345

client_name))

3382

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

3383

client_name)

3346

3384

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

3347

3385

["secret"])

3348

3386

3362

3400

server_settings=server_settings)

3363

3401

3364

3402

if not tcp_server.clients:

3365

logger.warning("No clients defined")

3403

log.warning("No clients defined")

3366

3404

3367

3405

if not foreground:

3368

3406

if pidfile is not None:

3371

3409

with pidfile:

3372

3410

print(pid, file=pidfile)

3373

3411

except IOError:

3374

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

3375

pidfilename, pid)

3412

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

3413

pidfilename, pid)

3376

3414

del pidfile

3377

3415

del pidfilename

3378

3416

3528

3566

3529

3567

try:

3530

3568

with tempfile.NamedTemporaryFile(

3531

mode='wb',

3569

mode="wb",

3532

3570

suffix=".pickle",

3533

prefix='clients-',

3571

prefix="clients-",

3534

3572

dir=os.path.dirname(stored_state_path),

3535

3573

delete=False) as stored_state:

3536

3574

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

3544

3582

except NameError:

3545

3583

pass

3546

3584

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

3547

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

3548

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

3585

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

3586

os.strerror(e.errno))

3549

3587

else:

3550

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

3551

exc_info=e)

3588

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

3589

exc_info=e)

3552

3590

raise

3553

3591

3554

3592

# Delete all clients, and settings from config

3580

3618

if zeroconf:

3581

3619

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

3582

3620

if use_ipv6:

3583

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

3584

" flowinfo %d, scope_id %d",

3585

*tcp_server.socket.getsockname())

3621

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

3622

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

3586

3623

else: # IPv4

3587

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

3588

*tcp_server.socket.getsockname())

3624

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

3625

*tcp_server.socket.getsockname())

3589

3626

3590

3627

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

3591

3628

3595

3632

try:

3596

3633

service.activate()

3597

3634

except dbus.exceptions.DBusException as error:

3598

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

3635

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

3599

3636

cleanup()

3600

3637

sys.exit(1)

3601

3638

# End of Avahi example code

3602

3639

3603

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

3604

lambda *args, **kwargs:

3605

(tcp_server.handle_request

3606

(*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))

3607

3645

3608

logger.debug("Starting main loop")

3646

log.debug("Starting main loop")

3609

3647

main_loop.run()

3610

3648

except AvahiError as error:

3611

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

3649

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

3612

3650

cleanup()

3613

3651

sys.exit(1)

3614

3652

except KeyboardInterrupt:

3615

3653

if debug:

3616

3654

print("", file=sys.stderr)

3617

logger.debug("Server received KeyboardInterrupt")

3618

logger.debug("Server exiting")

3655

log.debug("Server received KeyboardInterrupt")

3656

log.debug("Server exiting")

3619

3657

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

3620

3658

cleanup()

3621

3659

3622

3623

if __name__ == '__main__':

3624

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: