/mandos/trunk : revision 890

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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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# Mandos is free software: you can redistribute it and/or modify it

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# under the terms of the GNU General Public License as published by

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#

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# This program is free software: you can redistribute it and/or modify

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# it under the terms of the GNU General Public License as published by

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# the Free Software Foundation, either version 3 of the License, or

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# (at your option) any later version.

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#

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# Mandos is distributed in the hope that it will be useful, but

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# WITHOUT ANY WARRANTY; without even the implied warranty of

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# This program is distributed in the hope that it will be useful,

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# but WITHOUT ANY WARRANTY; without even the implied warranty of

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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

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# GNU General Public License for more details.

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#

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# You should have received a copy of the GNU General Public License

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# along with Mandos. If not, see <http://www.gnu.org/licenses/>.

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# along with this program. If not, see

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# <http://www.gnu.org/licenses/>.

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#

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

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#

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from __future__ import (division, absolute_import, print_function,

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unicode_literals)

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except ImportError:

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pass

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import sys

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import unittest

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import argparse

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import logging

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import os

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try:

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import SocketServer as socketserver

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except ImportError:

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import socketserver

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import socket

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import argparse

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import datetime

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import errno

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try:

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import ConfigParser as configparser

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except ImportError:

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import configparser

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import sys

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import re

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import os

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import signal

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import subprocess

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import atexit

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import stat

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import logging

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import logging.handlers

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import pwd

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import contextlib

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import itertools

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import collections

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import codecs

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import random

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import shlex

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import dbus

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import dbus.service

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import gi

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from gi.repository import GLib

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from dbus.mainloop.glib import DBusGMainLoop

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import ctypes

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import xml.dom.minidom

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import inspect

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if sys.version_info.major == 2:

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__metaclass__ = type

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str = unicode

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input = raw_input

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

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try:

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collections.abc.Callable

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except AttributeError:

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class abc:

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Callable = collections.Callable

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collections.abc = abc

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del abc

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# Add shlex.quote if it does not exist

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try:

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shlex.quote

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except AttributeError:

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shlex.quote = re.escape

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# Show warnings by default

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if not sys.warnoptions:

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import warnings

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warnings.simplefilter("default")

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# Try to find the value of SO_BINDTODEVICE:

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try:

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

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# No value found

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SO_BINDTODEVICE = None

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if sys.version_info < (3, 2):

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configparser.Configparser = configparser.SafeConfigParser

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if sys.version_info.major == 2:

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str = unicode

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version = "1.8.16"

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version = "1.7.13"

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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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pass

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class PGPEngine:

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class PGPEngine(object):

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

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def __init__(self):

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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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# Pretend that we have an Avahi module

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class avahi:

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

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class Avahi(object):

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

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

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

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

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PROTO_INET = 0 # avahi-common/address.h

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DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"

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DBUS_PATH_SERVER = "/"

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@staticmethod

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def string_array_to_txt_array(t):

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def string_array_to_txt_array(self, t):

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return dbus.Array((dbus.ByteArray(s.encode("utf-8"))

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for s in t), signature="ay")

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ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h

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SERVER_RUNNING = 2 # avahi-common/defs.h

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SERVER_COLLISION = 3 # avahi-common/defs.h

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SERVER_FAILURE = 4 # avahi-common/defs.h

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avahi = Avahi()

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class AvahiError(Exception):

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pass

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class AvahiService:

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class AvahiService(object):

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"""An Avahi (Zeroconf) service.

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Attributes:

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

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Used to optionally bind to the specified interface.

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name: string; Example: "Mandos"

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

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name: string; Example: 'Mandos'

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

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

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port: integer; what port to announce

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TXT: list of strings; TXT record for the service

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def rename(self, remove=True):

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

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if self.rename_count >= self.max_renames:

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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:

411

382

if (error.get_dbus_name()

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383

== "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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390

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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"""

453

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.")

427

logger.debug("Zeroconf service established.")

457

428

elif state == avahi.ENTRY_GROUP_COLLISION:

458

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

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

459

430

self.rename()

460

431

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))

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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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435

465

436

def cleanup(self):

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

477

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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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456

if state in bad_states:

486

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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])

459

logger.error(bad_states[state])

489

460

else:

490

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

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

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self.cleanup()

492

463

elif state == avahi.SERVER_RUNNING:

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try:

495

466

except dbus.exceptions.DBusException as error:

496

467

if (error.get_dbus_name()

497

468

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

498

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

469

logger.info("Local Zeroconf service name"

470

" collision.")

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return self.rename(remove=False)

500

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else:

501

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

473

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

502

474

self.cleanup()

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os._exit(1)

504

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else:

505

477

if error is None:

506

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

478

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

507

479

else:

508

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

480

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

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481

510

482

def activate(self):

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

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class AvahiServiceToSyslog(AvahiService):

524

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

525

497

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

526

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

527

**kwargs)

498

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

528

499

syslogger.setFormatter(logging.Formatter(

529

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

500

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

530

501

.format(self.name)))

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return ret

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504

534

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# Pretend that we have a GnuTLS module

535

class gnutls:

536

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

506

class GnuTLS(object):

507

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

508

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

537

509

538

510

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

539

511

if library is None:

540

512

library = ctypes.util.find_library("gnutls-deb0")

541

513

_library = ctypes.cdll.LoadLibrary(library)

542

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del library

515

_need_version = b"3.3.0"

516

517

def __init__(self):

518

# Need to use "self" here, since this method is called before

519

# the assignment to the "gnutls" global variable happens.

520

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

521

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

522

.format(self._need_version))

543

523

544

524

# Unless otherwise indicated, the constants and types below are

545

525

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

549

529

E_INTERRUPTED = -52

550

530

E_AGAIN = -28

551

531

CRT_OPENPGP = 2

552

CRT_RAWPK = 3

553

532

CLIENT = 2

554

533

SHUT_RDWR = 0

555

534

CRD_CERTIFICATE = 1

556

535

E_NO_CERTIFICATE_FOUND = -49

557

X509_FMT_DER = 0

558

NO_TICKETS = 1<<10

559

ENABLE_RAWPK = 1<<18

560

CTYPE_PEERS = 3

561

KEYID_USE_SHA256 = 1 # gnutls/x509.h

562

536

OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h

563

537

564

538

# Types

565

class _session_int(ctypes.Structure):

539

class session_int(ctypes.Structure):

566

540

_fields_ = []

567

session_t = ctypes.POINTER(_session_int)

541

session_t = ctypes.POINTER(session_int)

568

542

569

543

class certificate_credentials_st(ctypes.Structure):

570

544

_fields_ = []

573

547

certificate_type_t = ctypes.c_int

574

548

575

549

class datum_t(ctypes.Structure):

576

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

577

("size", ctypes.c_uint)]

550

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

551

('size', ctypes.c_uint)]

578

552

579

class _openpgp_crt_int(ctypes.Structure):

553

class openpgp_crt_int(ctypes.Structure):

580

554

_fields_ = []

581

openpgp_crt_t = ctypes.POINTER(_openpgp_crt_int)

555

openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)

582

556

openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h

583

557

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

584

558

credentials_type_t = ctypes.c_int

587

561

588

562

# Exceptions

589

563

class Error(Exception):

564

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

565

# exception might be raised from within GnuTLS.__init__,

566

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

567

# global variable has happened.

590

568

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

591

569

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

592

570

# code is passed, convert it to a string with

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")

598

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

574

message = GnuTLS.strerror(code)

575

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(object):

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(object):

640

593

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

641

self._as_parameter_ = gnutls.session_t()

642

gnutls_flags = gnutls.CLIENT

643

if gnutls.check_version(b"3.5.6"):

644

gnutls_flags |= gnutls.NO_TICKETS

645

if gnutls.has_rawpk:

646

gnutls_flags |= gnutls.ENABLE_RAWPK

647

gnutls.init(self, gnutls_flags)

648

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)

594

self._c_object = gnutls.session_t()

595

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

596

gnutls.set_default_priority(self._c_object)

597

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

598

gnutls.handshake_set_private_extensions(self._c_object,

599

True)

652

600

self.socket = socket

653

601

if credentials is None:

654

602

credentials = gnutls.Credentials()

655

gnutls.credentials_set(self, credentials.type,

656

credentials)

603

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

604

ctypes.cast(credentials._c_object,

605

ctypes.c_void_p))

657

606

self.credentials = credentials

658

607

659

608

def __del__(self):

660

gnutls.deinit(self)

609

gnutls.deinit(self._c_object)

661

610

662

611

def handshake(self):

663

return gnutls.handshake(self)

612

return gnutls.handshake(self._c_object)

664

613

665

614

def send(self, data):

666

615

data = bytes(data)

667

616

data_len = len(data)

668

617

while data_len > 0:

669

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

618

data_len -= gnutls.record_send(self._c_object,

619

data[-data_len:],

670

620

data_len)

671

621

672

622

def bye(self):

673

return gnutls.bye(self, gnutls.SHUT_RDWR)

623

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

674

624

675

625

# Error handling functions

676

626

def _error_code(result):

677

627

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

678

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

679

if result >= gnutls.E_SUCCESS:

628

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

629

if result >= 0:

680

630

return result

681

631

if result == gnutls.E_NO_CERTIFICATE_FOUND:

682

632

raise gnutls.CertificateSecurityError(code=result)

683

633

raise gnutls.Error(code=result)

684

634

685

def _retry_on_error(result, func, arguments,

686

_error_code=_error_code):

635

def _retry_on_error(result, func, arguments):

687

636

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

688

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

689

while result < gnutls.E_SUCCESS:

637

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

638

while result < 0:

690

639

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

691

640

return _error_code(result)

692

641

result = func(*arguments)

697

646

698

647

# Functions

699

648

priority_set_direct = _library.gnutls_priority_set_direct

700

priority_set_direct.argtypes = [ClientSession, ctypes.c_char_p,

649

priority_set_direct.argtypes = [session_t, ctypes.c_char_p,

701

650

ctypes.POINTER(ctypes.c_char_p)]

702

651

priority_set_direct.restype = _error_code

703

652

704

653

init = _library.gnutls_init

705

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

654

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

706

655

init.restype = _error_code

707

656

708

657

set_default_priority = _library.gnutls_set_default_priority

709

set_default_priority.argtypes = [ClientSession]

658

set_default_priority.argtypes = [session_t]

710

659

set_default_priority.restype = _error_code

711

660

712

661

record_send = _library.gnutls_record_send

713

record_send.argtypes = [ClientSession, ctypes.c_void_p,

662

record_send.argtypes = [session_t, ctypes.c_void_p,

714

663

ctypes.c_size_t]

715

664

record_send.restype = ctypes.c_ssize_t

716

665

record_send.errcheck = _retry_on_error

718

667

certificate_allocate_credentials = (

719

668

_library.gnutls_certificate_allocate_credentials)

720

669

certificate_allocate_credentials.argtypes = [

721

PointerTo(Credentials)]

670

ctypes.POINTER(certificate_credentials_t)]

722

671

certificate_allocate_credentials.restype = _error_code

723

672

724

673

certificate_free_credentials = (

725

674

_library.gnutls_certificate_free_credentials)

726

certificate_free_credentials.argtypes = [Credentials]

675

certificate_free_credentials.argtypes = [

676

certificate_credentials_t]

727

677

certificate_free_credentials.restype = None

728

678

729

679

handshake_set_private_extensions = (

730

680

_library.gnutls_handshake_set_private_extensions)

731

handshake_set_private_extensions.argtypes = [ClientSession,

681

handshake_set_private_extensions.argtypes = [session_t,

732

682

ctypes.c_int]

733

683

handshake_set_private_extensions.restype = None

734

684

735

685

credentials_set = _library.gnutls_credentials_set

736

credentials_set.argtypes = [ClientSession, credentials_type_t,

737

CastToVoidPointer(Credentials)]

686

credentials_set.argtypes = [session_t, credentials_type_t,

687

ctypes.c_void_p]

738

688

credentials_set.restype = _error_code

739

689

740

690

strerror = _library.gnutls_strerror

742

692

strerror.restype = ctypes.c_char_p

743

693

744

694

certificate_type_get = _library.gnutls_certificate_type_get

745

certificate_type_get.argtypes = [ClientSession]

695

certificate_type_get.argtypes = [session_t]

746

696

certificate_type_get.restype = _error_code

747

697

748

698

certificate_get_peers = _library.gnutls_certificate_get_peers

749

certificate_get_peers.argtypes = [ClientSession,

699

certificate_get_peers.argtypes = [session_t,

750

700

ctypes.POINTER(ctypes.c_uint)]

751

701

certificate_get_peers.restype = ctypes.POINTER(datum_t)

752

702

759

709

global_set_log_function.restype = None

760

710

761

711

deinit = _library.gnutls_deinit

762

deinit.argtypes = [ClientSession]

712

deinit.argtypes = [session_t]

763

713

deinit.restype = None

764

714

765

715

handshake = _library.gnutls_handshake

766

handshake.argtypes = [ClientSession]

767

handshake.restype = ctypes.c_int

716

handshake.argtypes = [session_t]

717

handshake.restype = _error_code

768

718

handshake.errcheck = _retry_on_error

769

719

770

720

transport_set_ptr = _library.gnutls_transport_set_ptr

771

transport_set_ptr.argtypes = [ClientSession, transport_ptr_t]

721

transport_set_ptr.argtypes = [session_t, transport_ptr_t]

772

722

transport_set_ptr.restype = None

773

723

774

724

bye = _library.gnutls_bye

775

bye.argtypes = [ClientSession, close_request_t]

776

bye.restype = ctypes.c_int

725

bye.argtypes = [session_t, close_request_t]

726

bye.restype = _error_code

777

727

bye.errcheck = _retry_on_error

778

728

779

729

check_version = _library.gnutls_check_version

780

730

check_version.argtypes = [ctypes.c_char_p]

781

731

check_version.restype = ctypes.c_char_p

782

732

783

_need_version = b"3.3.0"

784

if check_version(_need_version) is None:

785

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

786

.format(_need_version))

787

788

_tls_rawpk_version = b"3.6.6"

789

has_rawpk = bool(check_version(_tls_rawpk_version))

790

791

if has_rawpk:

792

# Types

793

class pubkey_st(ctypes.Structure):

794

_fields = []

795

pubkey_t = ctypes.POINTER(pubkey_st)

796

797

x509_crt_fmt_t = ctypes.c_int

798

799

# All the function declarations below are from

800

# gnutls/abstract.h

801

pubkey_init = _library.gnutls_pubkey_init

802

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

803

pubkey_init.restype = _error_code

804

805

pubkey_import = _library.gnutls_pubkey_import

806

pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),

807

x509_crt_fmt_t]

808

pubkey_import.restype = _error_code

809

810

pubkey_get_key_id = _library.gnutls_pubkey_get_key_id

811

pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,

812

ctypes.POINTER(ctypes.c_ubyte),

813

ctypes.POINTER(ctypes.c_size_t)]

814

pubkey_get_key_id.restype = _error_code

815

816

pubkey_deinit = _library.gnutls_pubkey_deinit

817

pubkey_deinit.argtypes = [pubkey_t]

818

pubkey_deinit.restype = None

819

else:

820

# All the function declarations below are from

821

# gnutls/openpgp.h

822

823

openpgp_crt_init = _library.gnutls_openpgp_crt_init

824

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

825

openpgp_crt_init.restype = _error_code

826

827

openpgp_crt_import = _library.gnutls_openpgp_crt_import

828

openpgp_crt_import.argtypes = [openpgp_crt_t,

829

ctypes.POINTER(datum_t),

830

openpgp_crt_fmt_t]

831

openpgp_crt_import.restype = _error_code

832

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

]

840

openpgp_crt_verify_self.restype = _error_code

841

842

openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit

843

openpgp_crt_deinit.argtypes = [openpgp_crt_t]

844

openpgp_crt_deinit.restype = None

845

846

openpgp_crt_get_fingerprint = (

847

_library.gnutls_openpgp_crt_get_fingerprint)

848

openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,

849

ctypes.c_void_p,

850

ctypes.POINTER(

851

ctypes.c_size_t)]

852

openpgp_crt_get_fingerprint.restype = _error_code

853

854

if check_version(b"3.6.4"):

855

certificate_type_get2 = _library.gnutls_certificate_type_get2

856

certificate_type_get2.argtypes = [ClientSession, ctypes.c_int]

857

certificate_type_get2.restype = _error_code

733

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

734

735

openpgp_crt_init = _library.gnutls_openpgp_crt_init

736

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

737

openpgp_crt_init.restype = _error_code

738

739

openpgp_crt_import = _library.gnutls_openpgp_crt_import

740

openpgp_crt_import.argtypes = [openpgp_crt_t,

741

ctypes.POINTER(datum_t),

742

openpgp_crt_fmt_t]

743

openpgp_crt_import.restype = _error_code

744

745

openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self

746

openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,

747

ctypes.POINTER(ctypes.c_uint)]

748

openpgp_crt_verify_self.restype = _error_code

749

750

openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit

751

openpgp_crt_deinit.argtypes = [openpgp_crt_t]

752

openpgp_crt_deinit.restype = None

753

754

openpgp_crt_get_fingerprint = (

755

_library.gnutls_openpgp_crt_get_fingerprint)

756

openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,

757

ctypes.c_void_p,

758

ctypes.POINTER(

759

ctypes.c_size_t)]

760

openpgp_crt_get_fingerprint.restype = _error_code

858

761

859

762

# Remove non-public functions

860

763

del _error_code, _retry_on_error

764

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

765

gnutls = GnuTLS()

861

766

862

767

863

768

def call_pipe(connection, # : multiprocessing.Connection

871

776

connection.close()

872

777

873

778

874

class Client:

779

class Client(object):

875

780

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

876

781

877

782

Attributes:

878

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

783

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

879

784

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

880

785

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

881

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

882

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

883

running.

786

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

787

to see if the client lives.

788

'None' if no process is running.

884

789

checker_callback_tag: a GLib event source tag, or None

885

790

checker_command: string; External command which is run to check

886

791

if client lives. %() expansions are done at

894

799

disable_initiator_tag: a GLib event source tag, or None

895

800

enabled: bool()

896

801

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

897

uniquely identify an OpenPGP client

898

key_id: string (64 hexadecimal digits); used to uniquely identify

899

a client using raw public keys

802

uniquely identify the client

900

803

host: string; available for use by the checker command

901

804

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

902

805

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

920

823

"""

921

824

922

825

runtime_expansions = ("approval_delay", "approval_duration",

923

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

826

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

924

827

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

925

828

"last_approval_request", "last_checked_ok",

926

829

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

956

859

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

957

860

"enabled")

958

861

959

# Uppercase and remove spaces from key_id and fingerprint

960

# for later comparison purposes with return value from the

961

# key_id() and fingerprint() functions

962

client["key_id"] = (section.get("key_id", "").upper()

963

.replace(" ", ""))

862

# Uppercase and remove spaces from fingerprint for later

863

# comparison purposes with return value from the

864

# fingerprint() function

964

865

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

965

866

.replace(" ", ""))

966

867

if "secret" in section:

1009

910

self.last_enabled = None

1010

911

self.expires = None

1011

912

1012

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

1013

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

1014

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

913

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

914

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

1015

915

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

1016

916

datetime.datetime.utcnow())

1017

917

1045

945

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

1046

946

# Already enabled

1047

947

return

948

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

1048

949

self.enabled = True

1049

950

self.last_enabled = datetime.datetime.utcnow()

1050

951

self.init_checker()

1055

956

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

1056

957

return False

1057

958

if not quiet:

1058

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

959

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

1059

960

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

1060

961

GLib.source_remove(self.disable_initiator_tag)

1061

962

self.disable_initiator_tag = None

1073

974

def __del__(self):

1074

975

self.disable()

1075

976

1076

def init_checker(self, randomize_start=False):

1077

# Schedule a new checker to be started a randomly selected

1078

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

1079

# the startup of checkers over time when the server is

1080

# started.

977

def init_checker(self):

978

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

979

# and every interval from then on.

1081

980

if self.checker_initiator_tag is not None:

1082

981

GLib.source_remove(self.checker_initiator_tag)

1083

interval_milliseconds = int(self.interval.total_seconds()

1084

* 1000)

1085

if randomize_start:

1086

delay_milliseconds = random.randrange(

1087

interval_milliseconds + 1)

1088

else:

1089

delay_milliseconds = interval_milliseconds

1090

982

self.checker_initiator_tag = GLib.timeout_add(

1091

delay_milliseconds, self.start_checker, randomize_start)

1092

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

1093

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

1094

# expire at the soonest one interval after a checker was

1095

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

1096

# time might have to be extended.

1097

now = datetime.datetime.utcnow()

1098

self.expires = now + delay + self.interval

1099

# Schedule a disable() at expire time

983

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

984

self.start_checker)

985

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

1100

986

if self.disable_initiator_tag is not None:

1101

987

GLib.source_remove(self.disable_initiator_tag)

1102

988

self.disable_initiator_tag = GLib.timeout_add(

1103

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

1104

self.disable)

989

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

990

# Also start a new checker *right now*.

991

self.start_checker()

1105

992

1106

993

def checker_callback(self, source, condition, connection,

1107

994

command):

1108

995

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

996

self.checker_callback_tag = None

997

self.checker = None

1109

998

# Read return code from connection (see call_pipe)

1110

999

returncode = connection.recv()

1111

1000

connection.close()

1112

if self.checker is not None:

1113

self.checker.join()

1114

self.checker_callback_tag = None

1115

self.checker = None

1116

1001

1117

1002

if returncode >= 0:

1118

1003

self.last_checker_status = returncode

1119

1004

self.last_checker_signal = None

1120

1005

if self.last_checker_status == 0:

1121

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

1006

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

1007

vars(self))

1122

1008

self.checked_ok()

1123

1009

else:

1124

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

1010

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

1125

1011

else:

1126

1012

self.last_checker_status = -1

1127

1013

self.last_checker_signal = -returncode

1128

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

1014

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

1015

vars(self))

1129

1016

return False

1130

1017

1131

1018

def checked_ok(self):

1150

1037

def need_approval(self):

1151

1038

self.last_approval_request = datetime.datetime.utcnow()

1152

1039

1153

def start_checker(self, start_was_randomized=False):

1040

def start_checker(self):

1154

1041

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

1155

1042

1156

1043

If a checker already exists, leave it running and do

1165

1052

# should be.

1166

1053

1167

1054

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

1168

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

1055

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

1169

1056

self.checker.join()

1170

1057

self.checker = None

1171

1058

# Start a new checker if needed

1172

1059

if self.checker is None:

1173

1060

# Escape attributes for the shell

1174

1061

escaped_attrs = {

1175

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

1062

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

1176

1063

for attr in self.runtime_expansions}

1177

1064

try:

1178

1065

command = self.checker_command % escaped_attrs

1179

1066

except TypeError as error:

1180

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

1181

self.checker_command, exc_info=error)

1067

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

1068

self.checker_command,

1069

exc_info=error)

1182

1070

return True # Try again later

1183

1071

self.current_checker_command = command

1184

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

1072

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

1073

self.name)

1185

1074

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

1186

1075

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

1187

1076

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

1203

1092

kwargs=popen_args)

1204

1093

self.checker.start()

1205

1094

self.checker_callback_tag = GLib.io_add_watch(

1206

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

1207

GLib.PRIORITY_DEFAULT, GLib.IO_IN,

1095

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

1208

1096

self.checker_callback, pipe[0], command)

1209

if start_was_randomized:

1210

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

1211

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

1212

# interval from then on.

1213

now = datetime.datetime.utcnow()

1214

self.checker_initiator_tag = GLib.timeout_add(

1215

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

1216

self.start_checker)

1217

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

1218

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

1219

return False

1220

1097

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

1221

1098

return True

1222

1099

1227

1104

self.checker_callback_tag = None

1228

1105

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

1229

1106

return

1230

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

1107

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

1231

1108

self.checker.terminate()

1232

1109

self.checker = None

1233

1110

1260

1137

func._dbus_name = func.__name__

1261

1138

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

1262

1139

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

1263

func._dbus_get_args_options = {"byte_arrays": byte_arrays}

1140

func._dbus_get_args_options = {'byte_arrays': byte_arrays}

1264

1141

return func

1265

1142

1266

1143

return decorator

1355

1232

1356

1233

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1357

1234

out_signature="s",

1358

path_keyword="object_path",

1359

connection_keyword="connection")

1235

path_keyword='object_path',

1236

connection_keyword='connection')

1360

1237

def Introspect(self, object_path, connection):

1361

1238

"""Overloading of standard D-Bus method.

1362

1239

1411

1288

document.unlink()

1412

1289

except (AttributeError, xml.dom.DOMException,

1413

1290

xml.parsers.expat.ExpatError) as error:

1414

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

1415

exc_info=error)

1291

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

1292

exc_info=error)

1416

1293

return xmlstring

1417

1294

1418

1295

1476

1353

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

1477

1354

"'ay' signature {!r}"

1478

1355

.format(prop._dbus_signature))

1479

value = dbus.ByteArray(bytes(value))

1356

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

1357

for byte in value))

1480

1358

prop(value)

1481

1359

1482

1360

@dbus.service.method(dbus.PROPERTIES_IFACE,

1515

1393

1516

1394

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1517

1395

out_signature="s",

1518

path_keyword="object_path",

1519

connection_keyword="connection")

1396

path_keyword='object_path',

1397

connection_keyword='connection')

1520

1398

def Introspect(self, object_path, connection):

1521

1399

"""Overloading of standard D-Bus method.

1522

1400

1578

1456

document.unlink()

1579

1457

except (AttributeError, xml.dom.DOMException,

1580

1458

xml.parsers.expat.ExpatError) as error:

1581

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

1582

exc_info=error)

1459

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

1460

exc_info=error)

1583

1461

return xmlstring

1584

1462

1585

1463

1617

1495

1618

1496

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1619

1497

out_signature="s",

1620

path_keyword="object_path",

1621

connection_keyword="connection")

1498

path_keyword='object_path',

1499

connection_keyword='connection')

1622

1500

def Introspect(self, object_path, connection):

1623

1501

"""Overloading of standard D-Bus method.

1624

1502

1649

1527

document.unlink()

1650

1528

except (AttributeError, xml.dom.DOMException,

1651

1529

xml.parsers.expat.ExpatError) as error:

1652

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

1653

exc_info=error)

1530

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

1531

exc_info=error)

1654

1532

return xmlstring

1655

1533

1656

1534

2120

1998

def Name_dbus_property(self):

2121

1999

return dbus.String(self.name)

2122

2000

2123

# KeyID - property

2124

@dbus_annotations(

2125

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

2126

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

2127

def KeyID_dbus_property(self):

2128

return dbus.String(self.key_id)

2129

2130

2001

# Fingerprint - property

2131

2002

@dbus_annotations(

2132

2003

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

2287

2158

del _interface

2288

2159

2289

2160

2290

class ProxyClient:

2291

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

2161

class ProxyClient(object):

2162

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

2292

2163

self._pipe = child_pipe

2293

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

2164

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

2294

2165

if not self._pipe.recv():

2295

raise KeyError(key_id or fpr)

2166

raise KeyError(fpr)

2296

2167

2297

2168

def __getattribute__(self, name):

2298

if name == "_pipe":

2169

if name == '_pipe':

2299

2170

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

2300

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

2171

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

2301

2172

data = self._pipe.recv()

2302

if data[0] == "data":

2173

if data[0] == 'data':

2303

2174

return data[1]

2304

if data[0] == "function":

2175

if data[0] == 'function':

2305

2176

2306

2177

def func(*args, **kwargs):

2307

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

2178

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

2308

2179

return self._pipe.recv()[1]

2309

2180

2310

2181

return func

2311

2182

2312

2183

def __setattr__(self, name, value):

2313

if name == "_pipe":

2184

if name == '_pipe':

2314

2185

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

2315

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

2186

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

2316

2187

2317

2188

2318

2189

class ClientHandler(socketserver.BaseRequestHandler, object):

2323

2194

2324

2195

def handle(self):

2325

2196

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

2326

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

2327

str(self.client_address))

2328

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

2197

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

2198

str(self.client_address))

2199

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

2200

self.server.child_pipe.fileno())

2329

2201

2330

2202

session = gnutls.ClientSession(self.request)

2331

2203

2332

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

2204

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

2333

2205

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

2334

2206

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

2335

2207

# "+DHE-DSS"))

2337

2209

priority = self.server.gnutls_priority

2338

2210

if priority is None:

2339

2211

priority = "NORMAL"

2340

gnutls.priority_set_direct(session,

2341

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

2212

gnutls.priority_set_direct(session._c_object,

2213

priority.encode("utf-8"),

2214

None)

2342

2215

2343

2216

# Start communication using the Mandos protocol

2344

2217

# Get protocol number

2345

2218

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

2346

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

2219

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

2347

2220

try:

2348

2221

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

2349

2222

raise RuntimeError(line)

2350

2223

except (ValueError, IndexError, RuntimeError) as error:

2351

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

2224

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

2352

2225

return

2353

2226

2354

2227

# Start GnuTLS connection

2355

2228

try:

2356

2229

session.handshake()

2357

2230

except gnutls.Error as error:

2358

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

2231

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

2359

2232

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

2360

2233

# established. Just abandon the request.

2361

2234

return

2362

log.debug("Handshake succeeded")

2235

logger.debug("Handshake succeeded")

2363

2236

2364

2237

approval_required = False

2365

2238

try:

2366

if gnutls.has_rawpk:

2367

fpr = b""

2368

try:

2369

key_id = self.key_id(

2370

self.peer_certificate(session))

2371

except (TypeError, gnutls.Error) as error:

2372

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

2373

return

2374

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

2375

key_id.decode("utf-8",

2376

errors="replace"))

2377

2378

else:

2379

key_id = b""

2380

try:

2381

fpr = self.fingerprint(

2382

self.peer_certificate(session))

2383

except (TypeError, gnutls.Error) as error:

2384

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

2385

return

2386

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

2387

2388

try:

2389

client = ProxyClient(child_pipe, key_id, fpr,

2239

try:

2240

fpr = self.fingerprint(

2241

self.peer_certificate(session))

2242

except (TypeError, gnutls.Error) as error:

2243

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

2244

return

2245

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

2246

2247

try:

2248

client = ProxyClient(child_pipe, fpr,

2390

2249

self.client_address)

2391

2250

except KeyError:

2392

2251

return

2398

2257

2399

2258

while True:

2400

2259

if not client.enabled:

2401

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

2260

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

2261

client.name)

2402

2262

if self.server.use_dbus:

2403

2263

# Emit D-Bus signal

2404

2264

client.Rejected("Disabled")

2408

2268

# We are approved or approval is disabled

2409

2269

break

2410

2270

elif client.approved is None:

2411

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

2412

client.name)

2271

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

2272

client.name)

2413

2273

if self.server.use_dbus:

2414

2274

# Emit D-Bus signal

2415

2275

client.NeedApproval(

2416

2276

client.approval_delay.total_seconds()

2417

2277

* 1000, client.approved_by_default)

2418

2278

else:

2419

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

2420

client.name)

2279

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

2280

client.name)

2421

2281

if self.server.use_dbus:

2422

2282

# Emit D-Bus signal

2423

2283

client.Rejected("Denied")

2431

2291

time2 = datetime.datetime.now()

2432

2292

if (time2 - time) >= delay:

2433

2293

if not client.approved_by_default:

2434

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

2435

" waiting for approval",

2436

client.name)

2294

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

2295

" waiting for approval",

2296

client.name)

2437

2297

if self.server.use_dbus:

2438

2298

# Emit D-Bus signal

2439

2299

client.Rejected("Approval timed out")

2446

2306

try:

2447

2307

session.send(client.secret)

2448

2308

except gnutls.Error as error:

2449

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

2309

logger.warning("gnutls send failed",

2310

exc_info=error)

2450

2311

return

2451

2312

2452

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

2313

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

2453

2314

# bump the timeout using extended_timeout

2454

2315

client.bump_timeout(client.extended_timeout)

2455

2316

if self.server.use_dbus:

2462

2323

try:

2463

2324

session.bye()

2464

2325

except gnutls.Error as error:

2465

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

2326

logger.warning("GnuTLS bye failed",

2327

exc_info=error)

2466

2328

2467

2329

@staticmethod

2468

2330

def peer_certificate(session):

2469

"Return the peer's certificate as a bytestring"

2470

try:

2471

cert_type = gnutls.certificate_type_get2(

2472

session, gnutls.CTYPE_PEERS)

2473

except AttributeError:

2474

cert_type = gnutls.certificate_type_get(session)

2475

if gnutls.has_rawpk:

2476

valid_cert_types = frozenset((gnutls.CRT_RAWPK,))

2477

else:

2478

valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))

2479

# If not a valid certificate type...

2480

if cert_type not in valid_cert_types:

2481

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

2482

valid_cert_types)

2331

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

2332

# If not an OpenPGP certificate...

2333

if (gnutls.certificate_type_get(session._c_object)

2334

!= gnutls.CRT_OPENPGP):

2483

2335

# ...return invalid data

2484

2336

return b""

2485

2337

list_size = ctypes.c_uint(1)

2486

2338

cert_list = (gnutls.certificate_get_peers

2487

(session, ctypes.byref(list_size)))

2339

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

2488

2340

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

2489

2341

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

2490

2342

if list_size.value == 0:

2493

2345

return ctypes.string_at(cert.data, cert.size)

2494

2346

2495

2347

@staticmethod

2496

def key_id(certificate):

2497

"Convert a certificate bytestring to a hexdigit key ID"

2498

# New GnuTLS "datum" with the public key

2499

datum = gnutls.datum_t(

2500

ctypes.cast(ctypes.c_char_p(certificate),

2501

ctypes.POINTER(ctypes.c_ubyte)),

2502

ctypes.c_uint(len(certificate)))

2503

# XXX all these need to be created in the gnutls "module"

2504

# New empty GnuTLS certificate

2505

pubkey = gnutls.pubkey_t()

2506

gnutls.pubkey_init(ctypes.byref(pubkey))

2507

# Import the raw public key into the certificate

2508

gnutls.pubkey_import(pubkey,

2509

ctypes.byref(datum),

2510

gnutls.X509_FMT_DER)

2511

# New buffer for the key ID

2512

buf = ctypes.create_string_buffer(32)

2513

buf_len = ctypes.c_size_t(len(buf))

2514

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

2515

gnutls.pubkey_get_key_id(

2516

pubkey,

2517

gnutls.KEYID_USE_SHA256,

2518

ctypes.cast(ctypes.byref(buf),

2519

ctypes.POINTER(ctypes.c_ubyte)),

2520

ctypes.byref(buf_len))

2521

# Deinit the certificate

2522

gnutls.pubkey_deinit(pubkey)

2523

2524

# Convert the buffer to a Python bytestring

2525

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

2526

# Convert the bytestring to hexadecimal notation

2527

hex_key_id = binascii.hexlify(key_id).upper()

2528

return hex_key_id

2529

2530

@staticmethod

2531

2348

def fingerprint(openpgp):

2532

2349

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

2533

2350

# New GnuTLS "datum" with the OpenPGP public key

2547

2364

ctypes.byref(crtverify))

2548

2365

if crtverify.value != 0:

2549

2366

gnutls.openpgp_crt_deinit(crt)

2550

raise gnutls.CertificateSecurityError(code

2551

=crtverify.value)

2367

raise gnutls.CertificateSecurityError("Verify failed")

2552

2368

# New buffer for the fingerprint

2553

2369

buf = ctypes.create_string_buffer(20)

2554

2370

buf_len = ctypes.c_size_t()

2564

2380

return hex_fpr

2565

2381

2566

2382

2567

class MultiprocessingMixIn:

2383

class MultiprocessingMixIn(object):

2568

2384

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

2569

2385

2570

2386

def sub_process_main(self, request, address):

2582

2398

return proc

2583

2399

2584

2400

2585

class MultiprocessingMixInWithPipe(MultiprocessingMixIn):

2401

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

2586

2402

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

2587

2403

2588

2404

def process_request(self, request, client_address):

2603

2419

2604

2420

2605

2421

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

2606

socketserver.TCPServer):

2607

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

2422

socketserver.TCPServer, object):

2423

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

2608

2424

2609

2425

Attributes:

2610

2426

enabled: Boolean; whether this server is activated yet

2661

2477

if SO_BINDTODEVICE is None:

2662

2478

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

2663

2479

# common enough.

2664

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

2480

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

2665

2481

SO_BINDTODEVICE = 25

2666

2482

try:

2667

2483

self.socket.setsockopt(

2669

2485

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

2670

2486

except socket.error as error:

2671

2487

if error.errno == errno.EPERM:

2672

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

2673

self.interface)

2488

logger.error("No permission to bind to"

2489

" interface %s", self.interface)

2674

2490

elif error.errno == errno.ENOPROTOOPT:

2675

log.error("SO_BINDTODEVICE not available; cannot"

2676

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

2491

logger.error("SO_BINDTODEVICE not available;"

2492

" cannot bind to interface %s",

2493

self.interface)

2677

2494

elif error.errno == errno.ENODEV:

2678

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

2679

" bind", self.interface)

2495

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

2496

" cannot bind", self.interface)

2680

2497

else:

2681

2498

raise

2682

2499

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

2683

2500

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

2684

if self.server_address[1]:

2685

self.allow_reuse_address = True

2686

2501

if not self.server_address[0]:

2687

2502

if self.address_family == socket.AF_INET6:

2688

2503

any_address = "::" # in6addr_any

2741

2556

def add_pipe(self, parent_pipe, proc):

2742

2557

# Call "handle_ipc" for both data and EOF events

2743

2558

GLib.io_add_watch(

2744

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

2745

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

2559

parent_pipe.fileno(),

2560

GLib.IO_IN | GLib.IO_HUP,

2746

2561

functools.partial(self.handle_ipc,

2747

2562

parent_pipe=parent_pipe,

2748

2563

proc=proc))

2761

2576

request = parent_pipe.recv()

2762

2577

command = request[0]

2763

2578

2764

if command == "init":

2765

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

2766

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

2767

address = request[3]

2579

if command == 'init':

2580

fpr = request[1]

2581

address = request[2]

2768

2582

2769

2583

for c in self.clients.values():

2770

if key_id == ("E3B0C44298FC1C149AFBF4C8996FB924"

2771

"27AE41E4649B934CA495991B7852B855"):

2772

continue

2773

if key_id and c.key_id == key_id:

2774

client = c

2775

break

2776

if fpr and c.fingerprint == fpr:

2584

if c.fingerprint == fpr:

2777

2585

client = c

2778

2586

break

2779

2587

else:

2780

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

2781

" %s", key_id or fpr, address)

2588

logger.info("Client not found for fingerprint: %s, ad"

2589

"dress: %s", fpr, address)

2782

2590

if self.use_dbus:

2783

2591

# Emit D-Bus signal

2784

mandos_dbus_service.ClientNotFound(key_id or fpr,

2592

mandos_dbus_service.ClientNotFound(fpr,

2785

2593

address[0])

2786

2594

parent_pipe.send(False)

2787

2595

return False

2788

2596

2789

2597

GLib.io_add_watch(

2790

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

2791

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

2598

parent_pipe.fileno(),

2599

GLib.IO_IN | GLib.IO_HUP,

2792

2600

functools.partial(self.handle_ipc,

2793

2601

parent_pipe=parent_pipe,

2794

2602

proc=proc,

2797

2605

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

2798

2606

# same fileno

2799

2607

return False

2800

if command == "funcall":

2608

if command == 'funcall':

2801

2609

funcname = request[1]

2802

2610

args = request[2]

2803

2611

kwargs = request[3]

2804

2612

2805

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

2613

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

2806

2614

funcname)(*args,

2807

2615

**kwargs)))

2808

2616

2809

if command == "getattr":

2617

if command == 'getattr':

2810

2618

attrname = request[1]

2811

2619

if isinstance(client_object.__getattribute__(attrname),

2812

collections.abc.Callable):

2813

parent_pipe.send(("function", ))

2620

collections.Callable):

2621

parent_pipe.send(('function', ))

2814

2622

else:

2815

2623

parent_pipe.send((

2816

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

2624

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

2817

2625

2818

if command == "setattr":

2626

if command == 'setattr':

2819

2627

attrname = request[1]

2820

2628

value = request[2]

2821

2629

setattr(client_object, attrname, value)

2826

2634

def rfc3339_duration_to_delta(duration):

2827

2635

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

2828

2636

2829

>>> timedelta = datetime.timedelta

2830

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

2831

True

2832

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

2833

True

2834

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

2835

True

2836

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

2837

True

2838

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

2839

True

2840

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

2841

True

2842

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

2843

True

2844

>>> del timedelta

2637

>>> rfc3339_duration_to_delta("P7D")

2638

datetime.timedelta(7)

2639

>>> rfc3339_duration_to_delta("PT60S")

2640

datetime.timedelta(0, 60)

2641

>>> rfc3339_duration_to_delta("PT60M")

2642

datetime.timedelta(0, 3600)

2643

>>> rfc3339_duration_to_delta("PT24H")

2644

datetime.timedelta(1)

2645

>>> rfc3339_duration_to_delta("P1W")

2646

datetime.timedelta(7)

2647

>>> rfc3339_duration_to_delta("PT5M30S")

2648

datetime.timedelta(0, 330)

2649

>>> rfc3339_duration_to_delta("P1DT3M20S")

2650

datetime.timedelta(1, 200)

2845

2651

"""

2846

2652

2847

2653

# Parsing an RFC 3339 duration with regular expressions is not

2927

2733

def string_to_delta(interval):

2928

2734

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

2929

2735

2930

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

2931

True

2932

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

2933

True

2934

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

2935

True

2936

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

2937

True

2938

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

2939

True

2940

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

2941

True

2736

>>> string_to_delta('7d')

2737

datetime.timedelta(7)

2738

>>> string_to_delta('60s')

2739

datetime.timedelta(0, 60)

2740

>>> string_to_delta('60m')

2741

datetime.timedelta(0, 3600)

2742

>>> string_to_delta('24h')

2743

datetime.timedelta(1)

2744

>>> string_to_delta('1w')

2745

datetime.timedelta(7)

2746

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

2747

datetime.timedelta(0, 330)

2942

2748

"""

2943

2749

2944

2750

try:

3046

2852

3047

2853

options = parser.parse_args()

3048

2854

2855

if options.check:

2856

import doctest

2857

fail_count, test_count = doctest.testmod()

2858

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

2859

3049

2860

# Default values for config file for server-global settings

3050

if gnutls.has_rawpk:

3051

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

3052

":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")

3053

else:

3054

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

3055

":+SIGN-DSA-SHA256")

3056

2861

server_defaults = {"interface": "",

3057

2862

"address": "",

3058

2863

"port": "",

3059

2864

"debug": "False",

3060

"priority": priority,

2865

"priority":

2866

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

2867

":+SIGN-DSA-SHA256",

3061

2868

"servicename": "Mandos",

3062

2869

"use_dbus": "True",

3063

2870

"use_ipv6": "True",

3068

2875

"foreground": "False",

3069

2876

"zeroconf": "True",

3070

2877

}

3071

del priority

3072

2878

3073

2879

# Parse config file for server-global settings

3074

server_config = configparser.ConfigParser(server_defaults)

2880

server_config = configparser.SafeConfigParser(server_defaults)

3075

2881

del server_defaults

3076

2882

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

3077

# Convert the ConfigParser object to a dict

2883

# Convert the SafeConfigParser object to a dict

3078

2884

server_settings = server_config.defaults()

3079

2885

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

3080

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

3081

"foreground", "zeroconf"):

2886

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

3082

2887

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

3083

2888

option)

3084

2889

if server_settings["port"]:

3147

2952

3148

2953

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

3149

2954

syslogger.setFormatter(

3150

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

3151

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

2955

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

2956

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

3152

2957

server_settings["servicename"])))

3153

2958

3154

2959

# Parse config file with clients

3155

client_config = configparser.ConfigParser(Client.client_defaults)

2960

client_config = configparser.SafeConfigParser(Client

2961

.client_defaults)

3156

2962

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

3157

2963

"clients.conf"))

3158

2964

3178

2984

try:

3179

2985

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

3180

2986

except IOError as e:

3181

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

3182

exc_info=e)

2987

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

2988

exc_info=e)

3183

2989

3184

2990

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

3185

2991

("mandos", "mandos"),

3196

3002

try:

3197

3003

os.setgid(gid)

3198

3004

os.setuid(uid)

3199

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

3005

if debug:

3006

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

3007

gid))

3200

3008

except OSError as error:

3201

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

3202

os.strerror(error.errno))

3009

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

3010

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

3203

3011

if error.errno != errno.EPERM:

3204

3012

raise

3205

3013

3212

3020

3213

3021

@gnutls.log_func

3214

3022

def debug_gnutls(level, string):

3215

log.debug("GnuTLS: %s",

3216

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

3023

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

3217

3024

3218

3025

gnutls.global_set_log_function(debug_gnutls)

3219

3026

3228

3035

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

3229

3036

daemon()

3230

3037

3231

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

3232

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

3233

# need to inform GLib that threads will be used.

3234

GLib.threads_init()

3038

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

3039

# to inform GLib that threads will be used.

3040

GLib.threads_init()

3235

3041

3236

3042

global main_loop

3237

3043

# From the Avahi example code

3248

3054

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

3249

3055

do_not_queue=True)

3250

3056

except dbus.exceptions.DBusException as e:

3251

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

3057

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

3252

3058

use_dbus = False

3253

3059

server_settings["use_dbus"] = False

3254

3060

tcp_server.use_dbus = False

3313

3119

if isinstance(s, bytes)

3314

3120

else s) for s in

3315

3121

value["client_structure"]]

3316

# .name, .host, and .checker_command

3317

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

3122

# .name & .host

3123

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

3318

3124

if isinstance(value[k], bytes):

3319

3125

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

3320

if "key_id" not in value:

3321

value["key_id"] = ""

3322

elif "fingerprint" not in value:

3323

value["fingerprint"] = ""

3324

3126

# old_client_settings

3325

3127

# .keys()

3326

3128

old_client_settings = {

3330

3132

for key, value in

3331

3133

bytes_old_client_settings.items()}

3332

3134

del bytes_old_client_settings

3333

# .host and .checker_command

3135

# .host

3334

3136

for value in old_client_settings.values():

3335

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

3336

if isinstance(value[attribute], bytes):

3337

value[attribute] = (value[attribute]

3338

.decode("utf-8"))

3137

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

3138

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

3139

.decode("utf-8"))

3339

3140

os.remove(stored_state_path)

3340

3141

except IOError as e:

3341

3142

if e.errno == errno.ENOENT:

3342

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

3343

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

3143

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

3144

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

3344

3145

else:

3345

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

3346

exc_info=e)

3146

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

3147

exc_info=e)

3347

3148

raise

3348

3149

except EOFError as e:

3349

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

3350

exc_info=e)

3150

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

3151

"EOFError:",

3152

exc_info=e)

3351

3153

3352

3154

with PGPEngine() as pgp:

3353

3155

for client_name, client in clients_data.items():

3380

3182

if client["enabled"]:

3381

3183

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

3382

3184

if not client["last_checked_ok"]:

3383

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

3384

" never performed a successful"

3385

" checker", client_name)

3185

logger.warning(

3186

"disabling client {} - Client never "

3187

"performed a successful checker".format(

3188

client_name))

3386

3189

client["enabled"] = False

3387

3190

elif client["last_checker_status"] != 0:

3388

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

3389

" last checker failed with error"

3390

" code %s", client_name,

3391

client["last_checker_status"])

3191

logger.warning(

3192

"disabling client {} - Client last"

3193

" checker failed with error code"

3194

" {}".format(

3195

client_name,

3196

client["last_checker_status"]))

3392

3197

client["enabled"] = False

3393

3198

else:

3394

3199

client["expires"] = (

3395

3200

datetime.datetime.utcnow()

3396

3201

+ client["timeout"])

3397

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

3398

" enabled", client_name)

3202

logger.debug("Last checker succeeded,"

3203

" keeping {} enabled".format(

3204

client_name))

3399

3205

try:

3400

3206

client["secret"] = pgp.decrypt(

3401

3207

client["encrypted_secret"],

3402

3208

client_settings[client_name]["secret"])

3403

3209

except PGPError:

3404

3210

# If decryption fails, we use secret from new settings

3405

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

3406

client_name)

3211

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

3212

client_name))

3407

3213

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

3408

3214

["secret"])

3409

3215

3423

3229

server_settings=server_settings)

3424

3230

3425

3231

if not tcp_server.clients:

3426

log.warning("No clients defined")

3232

logger.warning("No clients defined")

3427

3233

3428

3234

if not foreground:

3429

3235

if pidfile is not None:

3432

3238

with pidfile:

3433

3239

print(pid, file=pidfile)

3434

3240

except IOError:

3435

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

3436

pidfilename, pid)

3241

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

3242

pidfilename, pid)

3437

3243

del pidfile

3438

3244

del pidfilename

3439

3245

3459

3265

pass

3460

3266

3461

3267

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

3462

def ClientNotFound(self, key_id, address):

3268

def ClientNotFound(self, fingerprint, address):

3463

3269

"D-Bus signal"

3464

3270

pass

3465

3271

3589

3395

3590

3396

try:

3591

3397

with tempfile.NamedTemporaryFile(

3592

mode="wb",

3398

mode='wb',

3593

3399

suffix=".pickle",

3594

prefix="clients-",

3400

prefix='clients-',

3595

3401

dir=os.path.dirname(stored_state_path),

3596

3402

delete=False) as stored_state:

3597

3403

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

3605

3411

except NameError:

3606

3412

pass

3607

3413

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

3608

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

3609

os.strerror(e.errno))

3414

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

3415

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

3610

3416

else:

3611

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

3612

exc_info=e)

3417

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

3418

exc_info=e)

3613

3419

raise

3614

3420

3615

3421

# Delete all clients, and settings from config

3632

3438

mandos_dbus_service.client_added_signal(client)

3633

3439

# Need to initiate checking of clients

3634

3440

if client.enabled:

3635

client.init_checker(randomize_start=True)

3441

client.init_checker()

3636

3442

3637

3443

tcp_server.enable()

3638

3444

tcp_server.server_activate()

3641

3447

if zeroconf:

3642

3448

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

3643

3449

if use_ipv6:

3644

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

3645

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

3450

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

3451

" flowinfo %d, scope_id %d",

3452

*tcp_server.socket.getsockname())

3646

3453

else: # IPv4

3647

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

3648

*tcp_server.socket.getsockname())

3454

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

3455

*tcp_server.socket.getsockname())

3649

3456

3650

3457

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

3651

3458

3655

3462

try:

3656

3463

service.activate()

3657

3464

except dbus.exceptions.DBusException as error:

3658

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

3465

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

3659

3466

cleanup()

3660

3467

sys.exit(1)

3661

3468

# End of Avahi example code

3662

3469

3663

GLib.io_add_watch(

3664

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

3665

GLib.PRIORITY_DEFAULT, GLib.IO_IN,

3666

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

3667

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

3470

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

3471

lambda *args, **kwargs:

3472

(tcp_server.handle_request

3473

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

3668

3474

3669

log.debug("Starting main loop")

3475

logger.debug("Starting main loop")

3670

3476

main_loop.run()

3671

3477

except AvahiError as error:

3672

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

3478

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

3673

3479

cleanup()

3674

3480

sys.exit(1)

3675

3481

except KeyboardInterrupt:

3676

3482

if debug:

3677

3483

print("", file=sys.stderr)

3678

log.debug("Server received KeyboardInterrupt")

3679

log.debug("Server exiting")

3484

logger.debug("Server received KeyboardInterrupt")

3485

logger.debug("Server exiting")

3680

3486

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

3681

3487

cleanup()

3682

3488

3683

3684

def parse_test_args():

3685

# type: () -> argparse.Namespace

3686

parser = argparse.ArgumentParser(add_help=False)

3687

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

3688

parser.add_argument("--prefix", )

3689

args, unknown_args = parser.parse_known_args()

3690

if args.check:

3691

# Remove test options from sys.argv

3692

sys.argv[1:] = unknown_args

3693

return args

3694

3695

# Add all tests from doctest strings

3696

def load_tests(loader, tests, none):

3697

import doctest

3698

tests.addTests(doctest.DocTestSuite())

3699

return tests

3700

3701

if __name__ == "__main__":

3702

options = parse_test_args()

3703

try:

3704

if options.check:

3705

extra_test_prefix = options.prefix

3706

if extra_test_prefix is not None:

3707

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

3708

.result.wasSuccessful()):

3709

sys.exit(1)

3710

class ExtraTestLoader(unittest.TestLoader):

3711

testMethodPrefix = extra_test_prefix

3712

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

3713

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

3714

else:

3715

unittest.main(argv=[""])

3716

else:

3717

main()

3718

finally:

3719

logging.shutdown()

3720

3721

# Local Variables:

3722

# run-tests:

3723

# (lambda (&optional extra)

3724

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

3725

# extra))

3726

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

3727

# (funcall remove-test-window)

3728

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

3729

# run-tests-in-test-buffer:

3730

# (lambda (dir &optional extra)

3731

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

3732

# (setq buffer-read-only nil

3733

# default-directory dir)

3734

# (erase-buffer)

3735

# (compilation-mode))

3736

# (let ((process-result

3737

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

3738

# (process-file-shell-command

3739

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

3740

# (and (numberp process-result)

3741

# (= process-result 0))))

3742

# get-command-line:

3743

# (lambda (&optional extra)

3744

# (let ((quoted-script

3745

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

3746

# (format

3747

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

3748

# quoted-script)))

3749

# get-script-name:

3750

# (lambda ()

3751

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

3752

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

3753

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

3754

# (buffer-file-name))))

3755

# remove-test-window:

3756

# (lambda ()

3757

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

3758

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

3759

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

3760

# (lambda ()

3761

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

3762

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

3763

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

3764

# (display-buffer-overriding-action

3765

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

3766

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

3767

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

3768

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

3769

# eval:

3770

# (progn

3771

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

3772

# (funcall run-tests t)))

3773

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

3774

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

3775

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

3776

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

3777

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

3778

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

3779

# End:

3489

3490

if __name__ == '__main__':

3491

main()