/mandos/trunk : revision 1160

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#!/usr/bin/python3 -bI

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

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#!/usr/bin/python

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

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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 = "1.8.14"

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version = "1.8.7"

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stored_state_file = "clients.pickle"

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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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logger = logging.getLogger()

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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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log.addHandler(syslogger)

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

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' %(message)s'))

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logger.addHandler(syslogger)

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if debug:

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console = logging.StreamHandler()

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

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" [%(process)d]:"

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" %(levelname)s:"

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" %(message)s"))

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log.addHandler(console)

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log.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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logger.addHandler(console)

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logger.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 == b"gpg":

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if name == "gpg":

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self.gpg = path

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break

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except OSError as e:

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if e.errno != errno.ENOENT:

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raise

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self.gnupgargs = ["--batch",

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"--homedir", self.tempdir,

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"--force-mdc",

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"--quiet"]

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

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

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

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def __enter__(self):

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

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self.name)

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

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

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return self.rename(remove=False)

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else:

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

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

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

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455

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if state == avahi.ENTRY_GROUP_ESTABLISHED:

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log.debug("Zeroconf service established.")

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logger.debug("Zeroconf service established.")

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elif state == avahi.ENTRY_GROUP_COLLISION:

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

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

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str(error))

439

logger.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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453

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

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

478

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

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logger.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:

488

log.error(bad_states[state])

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logger.error(bad_states[state])

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else:

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

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

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logger.info("Local Zeroconf service name"

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" collision.")

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return self.rename(remove=False)

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else:

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

480

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

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

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else:

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

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logger.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"""

526

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

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**kwargs)

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ret = super(AvahiServiceToSyslog, self).rename(*args, **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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510

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540

OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h

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541

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# Types

565

class _session_int(ctypes.Structure):

543

class session_int(ctypes.Structure):

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_fields_ = []

567

session_t = ctypes.POINTER(_session_int)

545

session_t = ctypes.POINTER(session_int)

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546

569

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class certificate_credentials_st(ctypes.Structure):

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_fields_ = []

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certificate_type_t = ctypes.c_int

574

552

575

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class datum_t(ctypes.Structure):

576

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

577

("size", ctypes.c_uint)]

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

555

('size', ctypes.c_uint)]

578

556

579

class _openpgp_crt_int(ctypes.Structure):

557

class openpgp_crt_int(ctypes.Structure):

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_fields_ = []

581

openpgp_crt_t = ctypes.POINTER(_openpgp_crt_int)

559

openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)

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openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h

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

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credentials_type_t = ctypes.c_int

593

571

# gnutls.strerror()

594

572

self.code = code

595

573

if message is None and code is not None:

596

message = gnutls.strerror(code).decode(

597

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

574

message = gnutls.strerror(code)

598

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

599

576

message, *args)

600

577

601

578

class CertificateSecurityError(Error):

602

579

pass

603

580

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

629

581

# Classes

630

class Credentials(With_from_param):

582

class Credentials:

631

583

def __init__(self):

632

self._as_parameter_ = gnutls.certificate_credentials_t()

633

gnutls.certificate_allocate_credentials(self)

584

self._c_object = gnutls.certificate_credentials_t()

585

gnutls.certificate_allocate_credentials(

586

ctypes.byref(self._c_object))

634

587

self.type = gnutls.CRD_CERTIFICATE

635

588

636

589

def __del__(self):

637

gnutls.certificate_free_credentials(self)

590

gnutls.certificate_free_credentials(self._c_object)

638

591

639

class ClientSession(With_from_param):

592

class ClientSession:

640

593

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

641

self._as_parameter_ = gnutls.session_t()

594

self._c_object = gnutls.session_t()

642

595

gnutls_flags = gnutls.CLIENT

643

596

if gnutls.check_version(b"3.5.6"):

644

597

gnutls_flags |= gnutls.NO_TICKETS

645

598

if gnutls.has_rawpk:

646

599

gnutls_flags |= gnutls.ENABLE_RAWPK

647

gnutls.init(self, gnutls_flags)

600

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

648

601

del gnutls_flags

649

gnutls.set_default_priority(self)

650

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

651

gnutls.handshake_set_private_extensions(self, True)

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)

652

606

self.socket = socket

653

607

if credentials is None:

654

608

credentials = gnutls.Credentials()

655

gnutls.credentials_set(self, credentials.type,

656

credentials)

609

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

610

ctypes.cast(credentials._c_object,

611

ctypes.c_void_p))

657

612

self.credentials = credentials

658

613

659

614

def __del__(self):

660

gnutls.deinit(self)

615

gnutls.deinit(self._c_object)

661

616

662

617

def handshake(self):

663

return gnutls.handshake(self)

618

return gnutls.handshake(self._c_object)

664

619

665

620

def send(self, data):

666

621

data = bytes(data)

667

622

data_len = len(data)

668

623

while data_len > 0:

669

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

624

data_len -= gnutls.record_send(self._c_object,

625

data[-data_len:],

670

626

data_len)

671

627

672

628

def bye(self):

673

return gnutls.bye(self, gnutls.SHUT_RDWR)

629

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

674

630

675

631

# Error handling functions

676

632

def _error_code(result):

677

633

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

678

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

679

if result >= gnutls.E_SUCCESS:

634

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

635

if result >= 0:

680

636

return result

681

637

if result == gnutls.E_NO_CERTIFICATE_FOUND:

682

638

raise gnutls.CertificateSecurityError(code=result)

683

639

raise gnutls.Error(code=result)

684

640

685

def _retry_on_error(result, func, arguments,

686

_error_code=_error_code):

641

def _retry_on_error(result, func, arguments):

687

642

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

688

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

689

while result < gnutls.E_SUCCESS:

643

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

644

while result < 0:

690

645

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

691

646

return _error_code(result)

692

647

result = func(*arguments)

697

652

698

653

# Functions

699

654

priority_set_direct = _library.gnutls_priority_set_direct

700

priority_set_direct.argtypes = [ClientSession, ctypes.c_char_p,

655

priority_set_direct.argtypes = [session_t, ctypes.c_char_p,

701

656

ctypes.POINTER(ctypes.c_char_p)]

702

657

priority_set_direct.restype = _error_code

703

658

704

659

init = _library.gnutls_init

705

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

660

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

706

661

init.restype = _error_code

707

662

708

663

set_default_priority = _library.gnutls_set_default_priority

709

set_default_priority.argtypes = [ClientSession]

664

set_default_priority.argtypes = [session_t]

710

665

set_default_priority.restype = _error_code

711

666

712

667

record_send = _library.gnutls_record_send

713

record_send.argtypes = [ClientSession, ctypes.c_void_p,

668

record_send.argtypes = [session_t, ctypes.c_void_p,

714

669

ctypes.c_size_t]

715

670

record_send.restype = ctypes.c_ssize_t

716

671

record_send.errcheck = _retry_on_error

718

673

certificate_allocate_credentials = (

719

674

_library.gnutls_certificate_allocate_credentials)

720

675

certificate_allocate_credentials.argtypes = [

721

PointerTo(Credentials)]

676

ctypes.POINTER(certificate_credentials_t)]

722

677

certificate_allocate_credentials.restype = _error_code

723

678

724

679

certificate_free_credentials = (

725

680

_library.gnutls_certificate_free_credentials)

726

certificate_free_credentials.argtypes = [Credentials]

681

certificate_free_credentials.argtypes = [

682

certificate_credentials_t]

727

683

certificate_free_credentials.restype = None

728

684

729

685

handshake_set_private_extensions = (

730

686

_library.gnutls_handshake_set_private_extensions)

731

handshake_set_private_extensions.argtypes = [ClientSession,

687

handshake_set_private_extensions.argtypes = [session_t,

732

688

ctypes.c_int]

733

689

handshake_set_private_extensions.restype = None

734

690

735

691

credentials_set = _library.gnutls_credentials_set

736

credentials_set.argtypes = [ClientSession, credentials_type_t,

737

CastToVoidPointer(Credentials)]

692

credentials_set.argtypes = [session_t, credentials_type_t,

693

ctypes.c_void_p]

738

694

credentials_set.restype = _error_code

739

695

740

696

strerror = _library.gnutls_strerror

742

698

strerror.restype = ctypes.c_char_p

743

699

744

700

certificate_type_get = _library.gnutls_certificate_type_get

745

certificate_type_get.argtypes = [ClientSession]

701

certificate_type_get.argtypes = [session_t]

746

702

certificate_type_get.restype = _error_code

747

703

748

704

certificate_get_peers = _library.gnutls_certificate_get_peers

749

certificate_get_peers.argtypes = [ClientSession,

705

certificate_get_peers.argtypes = [session_t,

750

706

ctypes.POINTER(ctypes.c_uint)]

751

707

certificate_get_peers.restype = ctypes.POINTER(datum_t)

752

708

759

715

global_set_log_function.restype = None

760

716

761

717

deinit = _library.gnutls_deinit

762

deinit.argtypes = [ClientSession]

718

deinit.argtypes = [session_t]

763

719

deinit.restype = None

764

720

765

721

handshake = _library.gnutls_handshake

766

handshake.argtypes = [ClientSession]

767

handshake.restype = ctypes.c_int

722

handshake.argtypes = [session_t]

723

handshake.restype = _error_code

768

724

handshake.errcheck = _retry_on_error

769

725

770

726

transport_set_ptr = _library.gnutls_transport_set_ptr

771

transport_set_ptr.argtypes = [ClientSession, transport_ptr_t]

727

transport_set_ptr.argtypes = [session_t, transport_ptr_t]

772

728

transport_set_ptr.restype = None

773

729

774

730

bye = _library.gnutls_bye

775

bye.argtypes = [ClientSession, close_request_t]

776

bye.restype = ctypes.c_int

731

bye.argtypes = [session_t, close_request_t]

732

bye.restype = _error_code

777

733

bye.errcheck = _retry_on_error

778

734

779

735

check_version = _library.gnutls_check_version

796

752

797

753

x509_crt_fmt_t = ctypes.c_int

798

754

799

# All the function declarations below are from

800

# gnutls/abstract.h

755

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

801

756

pubkey_init = _library.gnutls_pubkey_init

802

757

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

803

758

pubkey_init.restype = _error_code

817

772

pubkey_deinit.argtypes = [pubkey_t]

818

773

pubkey_deinit.restype = None

819

774

else:

820

# All the function declarations below are from

821

# gnutls/openpgp.h

775

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

822

776

823

777

openpgp_crt_init = _library.gnutls_openpgp_crt_init

824

778

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

830

784

openpgp_crt_fmt_t]

831

785

openpgp_crt_import.restype = _error_code

832

786

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

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)]

840

790

openpgp_crt_verify_self.restype = _error_code

841

791

842

792

openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit

853

803

854

804

if check_version(b"3.6.4"):

855

805

certificate_type_get2 = _library.gnutls_certificate_type_get2

856

certificate_type_get2.argtypes = [ClientSession, ctypes.c_int]

806

certificate_type_get2.argtypes = [session_t, ctypes.c_int]

857

807

certificate_type_get2.restype = _error_code

858

808

859

809

# Remove non-public functions

875

825

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

876

826

877

827

Attributes:

878

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

828

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

879

829

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

880

830

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

881

831

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

882

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

832

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

883

833

running.

884

834

checker_callback_tag: a GLib event source tag, or None

885

835

checker_command: string; External command which is run to check

1009

959

self.last_enabled = None

1010

960

self.expires = None

1011

961

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

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

963

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

964

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

1015

965

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

1016

966

datetime.datetime.utcnow())

1017

967

1056

1006

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

1057

1007

return False

1058

1008

if not quiet:

1059

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

1009

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

1060

1010

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

1061

1011

GLib.source_remove(self.disable_initiator_tag)

1062

1012

self.disable_initiator_tag = None

1080

1030

if self.checker_initiator_tag is not None:

1081

1031

GLib.source_remove(self.checker_initiator_tag)

1082

1032

self.checker_initiator_tag = GLib.timeout_add(

1083

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

1084

+ 1)),

1033

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

1085

1034

self.start_checker)

1086

1035

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

1087

1036

if self.disable_initiator_tag is not None:

1097

1046

# Read return code from connection (see call_pipe)

1098

1047

returncode = connection.recv()

1099

1048

connection.close()

1100

if self.checker is not None:

1101

self.checker.join()

1049

self.checker.join()

1102

1050

self.checker_callback_tag = None

1103

1051

self.checker = None

1104

1052

1106

1054

self.last_checker_status = returncode

1107

1055

self.last_checker_signal = None

1108

1056

if self.last_checker_status == 0:

1109

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

1057

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

1058

vars(self))

1110

1059

self.checked_ok()

1111

1060

else:

1112

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

1061

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

1113

1062

else:

1114

1063

self.last_checker_status = -1

1115

1064

self.last_checker_signal = -returncode

1116

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

1065

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

1066

vars(self))

1117

1067

return False

1118

1068

1119

1069

def checked_ok(self):

1153

1103

# should be.

1154

1104

1155

1105

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

1156

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

1106

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

1157

1107

self.checker.join()

1158

1108

self.checker = None

1159

1109

# Start a new checker if needed

1160

1110

if self.checker is None:

1161

1111

# Escape attributes for the shell

1162

1112

escaped_attrs = {

1163

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

1113

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

1164

1114

for attr in self.runtime_expansions}

1165

1115

try:

1166

1116

command = self.checker_command % escaped_attrs

1167

1117

except TypeError as error:

1168

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

1169

self.checker_command, exc_info=error)

1118

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

1119

self.checker_command,

1120

exc_info=error)

1170

1121

return True # Try again later

1171

1122

self.current_checker_command = command

1172

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

1123

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

1124

self.name)

1173

1125

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

1174

1126

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

1175

1127

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

1191

1143

kwargs=popen_args)

1192

1144

self.checker.start()

1193

1145

self.checker_callback_tag = GLib.io_add_watch(

1194

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

1195

GLib.PRIORITY_DEFAULT, GLib.IO_IN,

1146

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

1196

1147

self.checker_callback, pipe[0], command)

1197

1148

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

1198

1149

return True

1204

1155

self.checker_callback_tag = None

1205

1156

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

1206

1157

return

1207

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

1158

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

1208

1159

self.checker.terminate()

1209

1160

self.checker = None

1210

1161

1237

1188

func._dbus_name = func.__name__

1238

1189

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

1239

1190

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

1240

func._dbus_get_args_options = {"byte_arrays": byte_arrays}

1191

func._dbus_get_args_options = {'byte_arrays': byte_arrays}

1241

1192

return func

1242

1193

1243

1194

return decorator

1332

1283

1333

1284

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1334

1285

out_signature="s",

1335

path_keyword="object_path",

1336

connection_keyword="connection")

1286

path_keyword='object_path',

1287

connection_keyword='connection')

1337

1288

def Introspect(self, object_path, connection):

1338

1289

"""Overloading of standard D-Bus method.

1339

1290

1388

1339

document.unlink()

1389

1340

except (AttributeError, xml.dom.DOMException,

1390

1341

xml.parsers.expat.ExpatError) as error:

1391

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

1392

exc_info=error)

1342

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

1343

exc_info=error)

1393

1344

return xmlstring

1394

1345

1395

1346

1453

1404

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

1454

1405

"'ay' signature {!r}"

1455

1406

.format(prop._dbus_signature))

1456

value = dbus.ByteArray(bytes(value))

1407

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

1408

for byte in value))

1457

1409

prop(value)

1458

1410

1459

1411

@dbus.service.method(dbus.PROPERTIES_IFACE,

1492

1444

1493

1445

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1494

1446

out_signature="s",

1495

path_keyword="object_path",

1496

connection_keyword="connection")

1447

path_keyword='object_path',

1448

connection_keyword='connection')

1497

1449

def Introspect(self, object_path, connection):

1498

1450

"""Overloading of standard D-Bus method.

1499

1451

1555

1507

document.unlink()

1556

1508

except (AttributeError, xml.dom.DOMException,

1557

1509

xml.parsers.expat.ExpatError) as error:

1558

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

1559

exc_info=error)

1510

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

1511

exc_info=error)

1560

1512

return xmlstring

1561

1513

1562

1514

1594

1546

1595

1547

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1596

1548

out_signature="s",

1597

path_keyword="object_path",

1598

connection_keyword="connection")

1549

path_keyword='object_path',

1550

connection_keyword='connection')

1599

1551

def Introspect(self, object_path, connection):

1600

1552

"""Overloading of standard D-Bus method.

1601

1553

1626

1578

document.unlink()

1627

1579

except (AttributeError, xml.dom.DOMException,

1628

1580

xml.parsers.expat.ExpatError) as error:

1629

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

1630

exc_info=error)

1581

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

1582

exc_info=error)

1631

1583

return xmlstring

1632

1584

1633

1585

2267

2219

class ProxyClient:

2268

2220

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

2269

2221

self._pipe = child_pipe

2270

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

2222

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

2271

2223

if not self._pipe.recv():

2272

2224

raise KeyError(key_id or fpr)

2273

2225

2274

2226

def __getattribute__(self, name):

2275

if name == "_pipe":

2227

if name == '_pipe':

2276

2228

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

2277

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

2229

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

2278

2230

data = self._pipe.recv()

2279

if data[0] == "data":

2231

if data[0] == 'data':

2280

2232

return data[1]

2281

if data[0] == "function":

2233

if data[0] == 'function':

2282

2234

2283

2235

def func(*args, **kwargs):

2284

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

2236

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

2285

2237

return self._pipe.recv()[1]

2286

2238

2287

2239

return func

2288

2240

2289

2241

def __setattr__(self, name, value):

2290

if name == "_pipe":

2242

if name == '_pipe':

2291

2243

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

2292

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

2244

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

2293

2245

2294

2246

2295

2247

class ClientHandler(socketserver.BaseRequestHandler, object):

2300

2252

2301

2253

def handle(self):

2302

2254

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

2303

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

2304

str(self.client_address))

2305

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

2255

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

2256

str(self.client_address))

2257

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

2258

self.server.child_pipe.fileno())

2306

2259

2307

2260

session = gnutls.ClientSession(self.request)

2308

2261

2309

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

2262

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

2310

2263

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

2311

2264

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

2312

2265

# "+DHE-DSS"))

2314

2267

priority = self.server.gnutls_priority

2315

2268

if priority is None:

2316

2269

priority = "NORMAL"

2317

gnutls.priority_set_direct(session,

2318

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

2270

gnutls.priority_set_direct(session._c_object,

2271

priority.encode("utf-8"),

2272

None)

2319

2273

2320

2274

# Start communication using the Mandos protocol

2321

2275

# Get protocol number

2322

2276

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

2323

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

2277

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

2324

2278

try:

2325

2279

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

2326

2280

raise RuntimeError(line)

2327

2281

except (ValueError, IndexError, RuntimeError) as error:

2328

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

2282

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

2329

2283

return

2330

2284

2331

2285

# Start GnuTLS connection

2332

2286

try:

2333

2287

session.handshake()

2334

2288

except gnutls.Error as error:

2335

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

2289

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

2336

2290

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

2337

2291

# established. Just abandon the request.

2338

2292

return

2339

log.debug("Handshake succeeded")

2293

logger.debug("Handshake succeeded")

2340

2294

2341

2295

approval_required = False

2342

2296

try:

2346

2300

key_id = self.key_id(

2347

2301

self.peer_certificate(session))

2348

2302

except (TypeError, gnutls.Error) as error:

2349

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

2303

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

2350

2304

return

2351

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

2352

key_id.decode("utf-8",

2353

errors="replace"))

2305

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

2354

2306

2355

2307

else:

2356

2308

key_id = b""

2358

2310

fpr = self.fingerprint(

2359

2311

self.peer_certificate(session))

2360

2312

except (TypeError, gnutls.Error) as error:

2361

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

2313

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

2362

2314

return

2363

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

2315

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

2364

2316

2365

2317

try:

2366

2318

client = ProxyClient(child_pipe, key_id, fpr,

2375

2327

2376

2328

while True:

2377

2329

if not client.enabled:

2378

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

2330

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

2331

client.name)

2379

2332

if self.server.use_dbus:

2380

2333

# Emit D-Bus signal

2381

2334

client.Rejected("Disabled")

2385

2338

# We are approved or approval is disabled

2386

2339

break

2387

2340

elif client.approved is None:

2388

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

2389

client.name)

2341

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

2342

client.name)

2390

2343

if self.server.use_dbus:

2391

2344

# Emit D-Bus signal

2392

2345

client.NeedApproval(

2393

2346

client.approval_delay.total_seconds()

2394

2347

* 1000, client.approved_by_default)

2395

2348

else:

2396

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

2397

client.name)

2349

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

2350

client.name)

2398

2351

if self.server.use_dbus:

2399

2352

# Emit D-Bus signal

2400

2353

client.Rejected("Denied")

2408

2361

time2 = datetime.datetime.now()

2409

2362

if (time2 - time) >= delay:

2410

2363

if not client.approved_by_default:

2411

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

2412

" waiting for approval",

2413

client.name)

2364

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

2365

" waiting for approval",

2366

client.name)

2414

2367

if self.server.use_dbus:

2415

2368

# Emit D-Bus signal

2416

2369

client.Rejected("Approval timed out")

2423

2376

try:

2424

2377

session.send(client.secret)

2425

2378

except gnutls.Error as error:

2426

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

2379

logger.warning("gnutls send failed",

2380

exc_info=error)

2427

2381

return

2428

2382

2429

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

2383

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

2430

2384

# bump the timeout using extended_timeout

2431

2385

client.bump_timeout(client.extended_timeout)

2432

2386

if self.server.use_dbus:

2439

2393

try:

2440

2394

session.bye()

2441

2395

except gnutls.Error as error:

2442

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

2396

logger.warning("GnuTLS bye failed",

2397

exc_info=error)

2443

2398

2444

2399

@staticmethod

2445

2400

def peer_certificate(session):

2446

2401

"Return the peer's certificate as a bytestring"

2447

2402

try:

2448

cert_type = gnutls.certificate_type_get2(

2449

session, gnutls.CTYPE_PEERS)

2403

cert_type = gnutls.certificate_type_get2(session._c_object,

2404

gnutls.CTYPE_PEERS)

2450

2405

except AttributeError:

2451

cert_type = gnutls.certificate_type_get(session)

2406

cert_type = gnutls.certificate_type_get(session._c_object)

2452

2407

if gnutls.has_rawpk:

2453

2408

valid_cert_types = frozenset((gnutls.CRT_RAWPK,))

2454

2409

else:

2455

2410

valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))

2456

2411

# If not a valid certificate type...

2457

2412

if cert_type not in valid_cert_types:

2458

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

2459

valid_cert_types)

2413

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

2414

valid_cert_types)

2460

2415

# ...return invalid data

2461

2416

return b""

2462

2417

list_size = ctypes.c_uint(1)

2463

2418

cert_list = (gnutls.certificate_get_peers

2464

(session, ctypes.byref(list_size)))

2419

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

2465

2420

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

2466

2421

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

2467

2422

if list_size.value == 0:

2489

2444

buf = ctypes.create_string_buffer(32)

2490

2445

buf_len = ctypes.c_size_t(len(buf))

2491

2446

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

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))

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))

2498

2452

# Deinit the certificate

2499

2453

gnutls.pubkey_deinit(pubkey)

2500

2454

2581

2535

2582

2536

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

2583

2537

socketserver.TCPServer):

2584

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

2538

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

2585

2539

2586

2540

Attributes:

2587

2541

enabled: Boolean; whether this server is activated yet

2638

2592

if SO_BINDTODEVICE is None:

2639

2593

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

2640

2594

# common enough.

2641

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

2595

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

2642

2596

SO_BINDTODEVICE = 25

2643

2597

try:

2644

2598

self.socket.setsockopt(

2646

2600

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

2647

2601

except socket.error as error:

2648

2602

if error.errno == errno.EPERM:

2649

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

2650

self.interface)

2603

logger.error("No permission to bind to"

2604

" interface %s", self.interface)

2651

2605

elif error.errno == errno.ENOPROTOOPT:

2652

log.error("SO_BINDTODEVICE not available; cannot"

2653

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

2606

logger.error("SO_BINDTODEVICE not available;"

2607

" cannot bind to interface %s",

2608

self.interface)

2654

2609

elif error.errno == errno.ENODEV:

2655

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

2656

" bind", self.interface)

2610

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

2611

" cannot bind", self.interface)

2657

2612

else:

2658

2613

raise

2659

2614

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

2718

2673

def add_pipe(self, parent_pipe, proc):

2719

2674

# Call "handle_ipc" for both data and EOF events

2720

2675

GLib.io_add_watch(

2721

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

2722

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

2676

parent_pipe.fileno(),

2677

GLib.IO_IN | GLib.IO_HUP,

2723

2678

functools.partial(self.handle_ipc,

2724

2679

parent_pipe=parent_pipe,

2725

2680

proc=proc))

2738

2693

request = parent_pipe.recv()

2739

2694

command = request[0]

2740

2695

2741

if command == "init":

2696

if command == 'init':

2742

2697

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

2743

2698

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

2744

2699

address = request[3]

2745

2700

2746

2701

for c in self.clients.values():

2747

if key_id == ("E3B0C44298FC1C149AFBF4C8996FB924"

2748

"27AE41E4649B934CA495991B7852B855"):

2702

if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":

2749

2703

continue

2750

2704

if key_id and c.key_id == key_id:

2751

2705

client = c

2754

2708

client = c

2755

2709

break

2756

2710

else:

2757

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

2758

" %s", key_id or fpr, address)

2711

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

2712

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

2759

2713

if self.use_dbus:

2760

2714

# Emit D-Bus signal

2761

2715

mandos_dbus_service.ClientNotFound(key_id or fpr,

2764

2718

return False

2765

2719

2766

2720

GLib.io_add_watch(

2767

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

2768

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

2721

parent_pipe.fileno(),

2722

GLib.IO_IN | GLib.IO_HUP,

2769

2723

functools.partial(self.handle_ipc,

2770

2724

parent_pipe=parent_pipe,

2771

2725

proc=proc,

2774

2728

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

2775

2729

# same fileno

2776

2730

return False

2777

if command == "funcall":

2731

if command == 'funcall':

2778

2732

funcname = request[1]

2779

2733

args = request[2]

2780

2734

kwargs = request[3]

2781

2735

2782

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

2736

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

2783

2737

funcname)(*args,

2784

2738

**kwargs)))

2785

2739

2786

if command == "getattr":

2740

if command == 'getattr':

2787

2741

attrname = request[1]

2788

2742

if isinstance(client_object.__getattribute__(attrname),

2789

collections.abc.Callable):

2790

parent_pipe.send(("function", ))

2743

collections.Callable):

2744

parent_pipe.send(('function', ))

2791

2745

else:

2792

2746

parent_pipe.send((

2793

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

2747

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

2794

2748

2795

if command == "setattr":

2749

if command == 'setattr':

2796

2750

attrname = request[1]

2797

2751

value = request[2]

2798

2752

setattr(client_object, attrname, value)

2803

2757

def rfc3339_duration_to_delta(duration):

2804

2758

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

2805

2759

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

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)

2822

2774

"""

2823

2775

2824

2776

# Parsing an RFC 3339 duration with regular expressions is not

2904

2856

def string_to_delta(interval):

2905

2857

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

2906

2858

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

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)

2919

2871

"""

2920

2872

2921

2873

try:

3023

2975

3024

2976

options = parser.parse_args()

3025

2977

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

3026

2983

# Default values for config file for server-global settings

3027

2984

if gnutls.has_rawpk:

3028

2985

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

3124

3081

3125

3082

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

3126

3083

syslogger.setFormatter(

3127

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

3128

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

3084

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

3085

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

3129

3086

server_settings["servicename"])))

3130

3087

3131

3088

# Parse config file with clients

3155

3112

try:

3156

3113

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

3157

3114

except IOError as e:

3158

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

3159

exc_info=e)

3115

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

3116

exc_info=e)

3160

3117

3161

3118

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

3162

3119

("mandos", "mandos"),

3173

3130

try:

3174

3131

os.setgid(gid)

3175

3132

os.setuid(uid)

3176

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

3133

if debug:

3134

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

3135

gid))

3177

3136

except OSError as error:

3178

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

3179

os.strerror(error.errno))

3137

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

3138

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

3180

3139

if error.errno != errno.EPERM:

3181

3140

raise

3182

3141

3189

3148

3190

3149

@gnutls.log_func

3191

3150

def debug_gnutls(level, string):

3192

log.debug("GnuTLS: %s",

3193

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

3151

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

3194

3152

3195

3153

gnutls.global_set_log_function(debug_gnutls)

3196

3154

3225

3183

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

3226

3184

do_not_queue=True)

3227

3185

except dbus.exceptions.DBusException as e:

3228

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

3186

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

3229

3187

use_dbus = False

3230

3188

server_settings["use_dbus"] = False

3231

3189

tcp_server.use_dbus = False

3290

3248

if isinstance(s, bytes)

3291

3249

else s) for s in

3292

3250

value["client_structure"]]

3293

# .name, .host, and .checker_command

3294

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

3251

# .name & .host

3252

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

3295

3253

if isinstance(value[k], bytes):

3296

3254

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

3297

3255

if "key_id" not in value:

3307

3265

for key, value in

3308

3266

bytes_old_client_settings.items()}

3309

3267

del bytes_old_client_settings

3310

# .host and .checker_command

3268

# .host

3311

3269

for value in old_client_settings.values():

3312

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

3313

if isinstance(value[attribute], bytes):

3314

value[attribute] = (value[attribute]

3315

.decode("utf-8"))

3270

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

3271

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

3272

.decode("utf-8"))

3316

3273

os.remove(stored_state_path)

3317

3274

except IOError as e:

3318

3275

if e.errno == errno.ENOENT:

3319

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

3320

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

3276

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

3277

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

3321

3278

else:

3322

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

3323

exc_info=e)

3279

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

3280

exc_info=e)

3324

3281

raise

3325

3282

except EOFError as e:

3326

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

3327

exc_info=e)

3283

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

3284

"EOFError:",

3285

exc_info=e)

3328

3286

3329

3287

with PGPEngine() as pgp:

3330

3288

for client_name, client in clients_data.items():

3357

3315

if client["enabled"]:

3358

3316

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

3359

3317

if not client["last_checked_ok"]:

3360

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

3361

" never performed a successful"

3362

" checker", client_name)

3318

logger.warning(

3319

"disabling client {} - Client never "

3320

"performed a successful checker".format(

3321

client_name))

3363

3322

client["enabled"] = False

3364

3323

elif client["last_checker_status"] != 0:

3365

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

3366

" last checker failed with error"

3367

" code %s", client_name,

3368

client["last_checker_status"])

3324

logger.warning(

3325

"disabling client {} - Client last"

3326

" checker failed with error code"

3327

" {}".format(

3328

client_name,

3329

client["last_checker_status"]))

3369

3330

client["enabled"] = False

3370

3331

else:

3371

3332

client["expires"] = (

3372

3333

datetime.datetime.utcnow()

3373

3334

+ client["timeout"])

3374

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

3375

" enabled", client_name)

3335

logger.debug("Last checker succeeded,"

3336

" keeping {} enabled".format(

3337

client_name))

3376

3338

try:

3377

3339

client["secret"] = pgp.decrypt(

3378

3340

client["encrypted_secret"],

3379

3341

client_settings[client_name]["secret"])

3380

3342

except PGPError:

3381

3343

# If decryption fails, we use secret from new settings

3382

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

3383

client_name)

3344

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

3345

client_name))

3384

3346

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

3385

3347

["secret"])

3386

3348

3400

3362

server_settings=server_settings)

3401

3363

3402

3364

if not tcp_server.clients:

3403

log.warning("No clients defined")

3365

logger.warning("No clients defined")

3404

3366

3405

3367

if not foreground:

3406

3368

if pidfile is not None:

3409

3371

with pidfile:

3410

3372

print(pid, file=pidfile)

3411

3373

except IOError:

3412

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

3413

pidfilename, pid)

3374

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

3375

pidfilename, pid)

3414

3376

del pidfile

3415

3377

del pidfilename

3416

3378

3566

3528

3567

3529

try:

3568

3530

with tempfile.NamedTemporaryFile(

3569

mode="wb",

3531

mode='wb',

3570

3532

suffix=".pickle",

3571

prefix="clients-",

3533

prefix='clients-',

3572

3534

dir=os.path.dirname(stored_state_path),

3573

3535

delete=False) as stored_state:

3574

3536

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

3582

3544

except NameError:

3583

3545

pass

3584

3546

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

3585

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

3586

os.strerror(e.errno))

3547

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

3548

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

3587

3549

else:

3588

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

3589

exc_info=e)

3550

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

3551

exc_info=e)

3590

3552

raise

3591

3553

3592

3554

# Delete all clients, and settings from config

3618

3580

if zeroconf:

3619

3581

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

3620

3582

if use_ipv6:

3621

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

3622

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

3583

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

3584

" flowinfo %d, scope_id %d",

3585

*tcp_server.socket.getsockname())

3623

3586

else: # IPv4

3624

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

3625

*tcp_server.socket.getsockname())

3587

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

3588

*tcp_server.socket.getsockname())

3626

3589

3627

3590

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

3628

3591

3632

3595

try:

3633

3596

service.activate()

3634

3597

except dbus.exceptions.DBusException as error:

3635

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

3598

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

3636

3599

cleanup()

3637

3600

sys.exit(1)

3638

3601

# End of Avahi example code

3639

3602

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))

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))

3645

3607

3646

log.debug("Starting main loop")

3608

logger.debug("Starting main loop")

3647

3609

main_loop.run()

3648

3610

except AvahiError as error:

3649

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

3611

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

3650

3612

cleanup()

3651

3613

sys.exit(1)

3652

3614

except KeyboardInterrupt:

3653

3615

if debug:

3654

3616

print("", file=sys.stderr)

3655

log.debug("Server received KeyboardInterrupt")

3656

log.debug("Server exiting")

3617

logger.debug("Server received KeyboardInterrupt")

3618

logger.debug("Server exiting")

3657

3619

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

3658

3620

cleanup()

3659

3621

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:

3622

3623

if __name__ == '__main__':

3624

main()