/mandos/trunk : revision 1274

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#!/usr/bin/python

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

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#!/usr/bin/python3 -bI

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

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#

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

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#

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# "AvahiService" class, and some lines in "main".

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#

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# Everything else is

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#

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# This 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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#

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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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# 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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# 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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# 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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# 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 this program. If not, see

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

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# along with Mandos. If not, see <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.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 = "1.7.15"

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version = "1.8.16"

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stored_state_file = "clients.pickle"

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logger = logging.getLogger()

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

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

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syslogger = None

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try:

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facility=logging.handlers.SysLogHandler.LOG_DAEMON,

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address="/dev/log"))

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syslogger.setFormatter(logging.Formatter

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

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' %(message)s'))

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logger.addHandler(syslogger)

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

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" %(message)s"))

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log.addHandler(syslogger)

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if debug:

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console = logging.StreamHandler()

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

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' [%(process)d]:'

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' %(levelname)s:'

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' %(message)s'))

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logger.addHandler(console)

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logger.setLevel(level)

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

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" [%(process)d]:"

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" %(levelname)s:"

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" %(message)s"))

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log.addHandler(console)

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log.setLevel(level)

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class PGPError(Exception):

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pass

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class PGPEngine(object):

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class PGPEngine:

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

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def __init__(self):

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output = subprocess.check_output(["gpgconf"])

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for line in output.splitlines():

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name, text, path = line.split(b":")

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if name == "gpg":

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if name == b"gpg":

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self.gpg = path

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break

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except OSError as e:

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if e.errno != errno.ENOENT:

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raise

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self.gnupgargs = ['--batch',

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'--homedir', self.tempdir,

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'--force-mdc',

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'--quiet']

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self.gnupgargs = ["--batch",

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"--homedir", self.tempdir,

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"--force-mdc",

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"--quiet"]

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# Only GPG version 1 has the --no-use-agent option.

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

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

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

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def __enter__(self):

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dir=self.tempdir) as passfile:

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passfile.write(passphrase)

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passfile.flush()

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proc = subprocess.Popen([self.gpg, '--symmetric',

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'--passphrase-file',

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proc = subprocess.Popen([self.gpg, "--symmetric",

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"--passphrase-file",

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passfile.name]

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+ self.gnupgargs,

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stdin=subprocess.PIPE,

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dir=self.tempdir) as passfile:

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passfile.write(passphrase)

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passfile.flush()

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proc = subprocess.Popen([self.gpg, '--decrypt',

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'--passphrase-file',

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proc = subprocess.Popen([self.gpg, "--decrypt",

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"--passphrase-file",

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passfile.name]

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+ self.gnupgargs,

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stdin=subprocess.PIPE,

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# Pretend that we have an Avahi module

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class Avahi(object):

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"""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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class avahi:

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

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

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

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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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def string_array_to_txt_array(self, t):

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@staticmethod

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def string_array_to_txt_array(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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345

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class AvahiService(object):

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class AvahiService:

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"""An Avahi (Zeroconf) service.

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Attributes:

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

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Used to optionally bind to the specified interface.

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name: string; Example: 'Mandos'

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

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name: string; Example: "Mandos"

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

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

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port: integer; what port to announce

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TXT: list of strings; TXT record for the service

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def rename(self, remove=True):

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

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if self.rename_count >= self.max_renames:

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

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" after %i retries, exiting.",

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self.rename_count)

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

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" after %i retries, exiting.",

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self.rename_count)

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raise AvahiServiceError("Too many renames")

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401

self.name = str(

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self.server.GetAlternativeServiceName(self.name))

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self.rename_count += 1

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

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self.name)

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

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self.name)

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if remove:

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self.remove()

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try:

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except dbus.exceptions.DBusException as error:

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411

if (error.get_dbus_name()

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412

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

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

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

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return self.rename(remove=False)

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else:

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

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

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self.cleanup()

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os._exit(1)

390

419

406

435

avahi.DBUS_INTERFACE_ENTRY_GROUP)

407

436

self.entry_group_state_changed_match = (

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self.group.connect_to_signal(

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'StateChanged', self.entry_group_state_changed))

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

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self.name, self.type)

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"StateChanged", self.entry_group_state_changed))

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

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self.name, self.type)

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self.group.AddService(

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self.interface,

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self.protocol,

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422

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def entry_group_state_changed(self, state, error):

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

424

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

453

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

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454

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if state == avahi.ENTRY_GROUP_ESTABLISHED:

427

logger.debug("Zeroconf service established.")

456

log.debug("Zeroconf service established.")

428

457

elif state == avahi.ENTRY_GROUP_COLLISION:

429

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

458

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

430

459

self.rename()

431

460

elif state == avahi.ENTRY_GROUP_FAILURE:

432

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

433

str(error))

461

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

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str(error))

434

463

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

435

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436

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def cleanup(self):

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475

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

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477

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

449

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

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

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bad_states = {

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avahi.SERVER_INVALID: "Zeroconf server invalid",

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avahi.SERVER_REGISTERING: None,

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485

if state in bad_states:

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if bad_states[state] is not None:

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if error is None:

459

logger.error(bad_states[state])

488

log.error(bad_states[state])

460

489

else:

461

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

490

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

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self.cleanup()

463

492

elif state == avahi.SERVER_RUNNING:

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493

try:

466

495

except dbus.exceptions.DBusException as error:

467

496

if (error.get_dbus_name()

468

497

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

469

logger.info("Local Zeroconf service name"

470

" collision.")

498

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

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return self.rename(remove=False)

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else:

473

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

501

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

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self.cleanup()

475

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os._exit(1)

476

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else:

477

505

if error is None:

478

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

506

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

479

507

else:

480

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

508

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

481

509

482

510

def activate(self):

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

495

523

class AvahiServiceToSyslog(AvahiService):

496

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

497

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

498

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

526

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

527

**kwargs)

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syslogger.setFormatter(logging.Formatter(

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

529

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

501

530

.format(self.name)))

502

531

return ret

503

532

504

533

505

534

# Pretend that we have a GnuTLS module

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."""

535

class gnutls:

536

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

509

537

510

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

511

539

if library is None:

512

540

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

513

541

_library = ctypes.cdll.LoadLibrary(library)

514

542

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))

523

543

524

544

# Unless otherwise indicated, the constants and types below are

525

545

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

529

549

E_INTERRUPTED = -52

530

550

E_AGAIN = -28

531

551

CRT_OPENPGP = 2

552

CRT_RAWPK = 3

532

553

CLIENT = 2

533

554

SHUT_RDWR = 0

534

555

CRD_CERTIFICATE = 1

535

556

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

536

562

OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h

537

563

538

564

# Types

539

class session_int(ctypes.Structure):

565

class _session_int(ctypes.Structure):

540

566

_fields_ = []

541

session_t = ctypes.POINTER(session_int)

567

session_t = ctypes.POINTER(_session_int)

542

568

543

569

class certificate_credentials_st(ctypes.Structure):

544

570

_fields_ = []

547

573

certificate_type_t = ctypes.c_int

548

574

549

575

class datum_t(ctypes.Structure):

550

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

551

('size', ctypes.c_uint)]

576

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

577

("size", ctypes.c_uint)]

552

578

553

class openpgp_crt_int(ctypes.Structure):

579

class _openpgp_crt_int(ctypes.Structure):

554

580

_fields_ = []

555

openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)

581

openpgp_crt_t = ctypes.POINTER(_openpgp_crt_int)

556

582

openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h

557

583

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

558

584

credentials_type_t = ctypes.c_int

561

587

562

588

# Exceptions

563

589

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.

568

590

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

569

591

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

570

592

# code is passed, convert it to a string with

571

593

# gnutls.strerror()

572

594

self.code = code

573

595

if message is None and code is not None:

574

message = GnuTLS.strerror(code)

575

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

596

message = gnutls.strerror(code).decode(

597

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

598

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

576

599

message, *args)

577

600

578

601

class CertificateSecurityError(Error):

579

602

pass

580

603

604

class PointerTo:

605

def __init__(self, cls):

606

self.cls = cls

607

608

def from_param(self, obj):

609

if not isinstance(obj, self.cls):

610

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

611

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

612

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

613

614

class CastToVoidPointer:

615

def __init__(self, cls):

616

self.cls = cls

617

618

def from_param(self, obj):

619

if not isinstance(obj, self.cls):

620

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

621

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

622

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

623

624

class With_from_param:

625

@classmethod

626

def from_param(cls, obj):

627

return obj._as_parameter_

628

581

629

# Classes

582

class Credentials(object):

630

class Credentials(With_from_param):

583

631

def __init__(self):

584

self._c_object = gnutls.certificate_credentials_t()

585

gnutls.certificate_allocate_credentials(

586

ctypes.byref(self._c_object))

632

self._as_parameter_ = gnutls.certificate_credentials_t()

633

gnutls.certificate_allocate_credentials(self)

587

634

self.type = gnutls.CRD_CERTIFICATE

588

635

589

636

def __del__(self):

590

gnutls.certificate_free_credentials(self._c_object)

637

gnutls.certificate_free_credentials(self)

591

638

592

class ClientSession(object):

639

class ClientSession(With_from_param):

593

640

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

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)

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)

600

652

self.socket = socket

601

653

if credentials is None:

602

654

credentials = gnutls.Credentials()

603

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

604

ctypes.cast(credentials._c_object,

605

ctypes.c_void_p))

655

gnutls.credentials_set(self, credentials.type,

656

credentials)

606

657

self.credentials = credentials

607

658

608

659

def __del__(self):

609

gnutls.deinit(self._c_object)

660

gnutls.deinit(self)

610

661

611

662

def handshake(self):

612

return gnutls.handshake(self._c_object)

663

return gnutls.handshake(self)

613

664

614

665

def send(self, data):

615

666

data = bytes(data)

616

667

data_len = len(data)

617

668

while data_len > 0:

618

data_len -= gnutls.record_send(self._c_object,

619

data[-data_len:],

669

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

620

670

data_len)

621

671

622

672

def bye(self):

623

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

673

return gnutls.bye(self, gnutls.SHUT_RDWR)

624

674

625

675

# Error handling functions

626

676

def _error_code(result):

627

677

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

628

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

629

if result >= 0:

678

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

679

if result >= gnutls.E_SUCCESS:

630

680

return result

631

681

if result == gnutls.E_NO_CERTIFICATE_FOUND:

632

682

raise gnutls.CertificateSecurityError(code=result)

633

683

raise gnutls.Error(code=result)

634

684

635

def _retry_on_error(result, func, arguments):

685

def _retry_on_error(result, func, arguments,

686

_error_code=_error_code):

636

687

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

637

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

638

while result < 0:

688

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

689

while result < gnutls.E_SUCCESS:

639

690

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

640

691

return _error_code(result)

641

692

result = func(*arguments)

646

697

647

698

# Functions

648

699

priority_set_direct = _library.gnutls_priority_set_direct

649

priority_set_direct.argtypes = [session_t, ctypes.c_char_p,

700

priority_set_direct.argtypes = [ClientSession, ctypes.c_char_p,

650

701

ctypes.POINTER(ctypes.c_char_p)]

651

702

priority_set_direct.restype = _error_code

652

703

653

704

init = _library.gnutls_init

654

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

705

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

655

706

init.restype = _error_code

656

707

657

708

set_default_priority = _library.gnutls_set_default_priority

658

set_default_priority.argtypes = [session_t]

709

set_default_priority.argtypes = [ClientSession]

659

710

set_default_priority.restype = _error_code

660

711

661

712

record_send = _library.gnutls_record_send

662

record_send.argtypes = [session_t, ctypes.c_void_p,

713

record_send.argtypes = [ClientSession, ctypes.c_void_p,

663

714

ctypes.c_size_t]

664

715

record_send.restype = ctypes.c_ssize_t

665

716

record_send.errcheck = _retry_on_error

667

718

certificate_allocate_credentials = (

668

719

_library.gnutls_certificate_allocate_credentials)

669

720

certificate_allocate_credentials.argtypes = [

670

ctypes.POINTER(certificate_credentials_t)]

721

PointerTo(Credentials)]

671

722

certificate_allocate_credentials.restype = _error_code

672

723

673

724

certificate_free_credentials = (

674

725

_library.gnutls_certificate_free_credentials)

675

certificate_free_credentials.argtypes = [

676

certificate_credentials_t]

726

certificate_free_credentials.argtypes = [Credentials]

677

727

certificate_free_credentials.restype = None

678

728

679

729

handshake_set_private_extensions = (

680

730

_library.gnutls_handshake_set_private_extensions)

681

handshake_set_private_extensions.argtypes = [session_t,

731

handshake_set_private_extensions.argtypes = [ClientSession,

682

732

ctypes.c_int]

683

733

handshake_set_private_extensions.restype = None

684

734

685

735

credentials_set = _library.gnutls_credentials_set

686

credentials_set.argtypes = [session_t, credentials_type_t,

687

ctypes.c_void_p]

736

credentials_set.argtypes = [ClientSession, credentials_type_t,

737

CastToVoidPointer(Credentials)]

688

738

credentials_set.restype = _error_code

689

739

690

740

strerror = _library.gnutls_strerror

692

742

strerror.restype = ctypes.c_char_p

693

743

694

744

certificate_type_get = _library.gnutls_certificate_type_get

695

certificate_type_get.argtypes = [session_t]

745

certificate_type_get.argtypes = [ClientSession]

696

746

certificate_type_get.restype = _error_code

697

747

698

748

certificate_get_peers = _library.gnutls_certificate_get_peers

699

certificate_get_peers.argtypes = [session_t,

749

certificate_get_peers.argtypes = [ClientSession,

700

750

ctypes.POINTER(ctypes.c_uint)]

701

751

certificate_get_peers.restype = ctypes.POINTER(datum_t)

702

752

709

759

global_set_log_function.restype = None

710

760

711

761

deinit = _library.gnutls_deinit

712

deinit.argtypes = [session_t]

762

deinit.argtypes = [ClientSession]

713

763

deinit.restype = None

714

764

715

765

handshake = _library.gnutls_handshake

716

handshake.argtypes = [session_t]

717

handshake.restype = _error_code

766

handshake.argtypes = [ClientSession]

767

handshake.restype = ctypes.c_int

718

768

handshake.errcheck = _retry_on_error

719

769

720

770

transport_set_ptr = _library.gnutls_transport_set_ptr

721

transport_set_ptr.argtypes = [session_t, transport_ptr_t]

771

transport_set_ptr.argtypes = [ClientSession, transport_ptr_t]

722

772

transport_set_ptr.restype = None

723

773

724

774

bye = _library.gnutls_bye

725

bye.argtypes = [session_t, close_request_t]

726

bye.restype = _error_code

775

bye.argtypes = [ClientSession, close_request_t]

776

bye.restype = ctypes.c_int

727

777

bye.errcheck = _retry_on_error

728

778

729

779

check_version = _library.gnutls_check_version

730

780

check_version.argtypes = [ctypes.c_char_p]

731

781

check_version.restype = ctypes.c_char_p

732

782

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

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

761

858

762

859

# Remove non-public functions

763

860

del _error_code, _retry_on_error

764

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

765

gnutls = GnuTLS()

766

861

767

862

768

863

def call_pipe(connection, # : multiprocessing.Connection

776

871

connection.close()

777

872

778

873

779

class Client(object):

874

class Client:

780

875

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

781

876

782

877

Attributes:

783

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

878

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

784

879

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

785

880

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

786

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

787

to see if the client lives.

788

'None' if no process is running.

881

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

882

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

883

running.

789

884

checker_callback_tag: a GLib event source tag, or None

790

885

checker_command: string; External command which is run to check

791

886

if client lives. %() expansions are done at

799

894

disable_initiator_tag: a GLib event source tag, or None

800

895

enabled: bool()

801

896

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

802

uniquely identify the client

897

uniquely identify an OpenPGP client

898

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

899

a client using raw public keys

803

900

host: string; available for use by the checker command

804

901

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

805

902

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

823

920

"""

824

921

825

922

runtime_expansions = ("approval_delay", "approval_duration",

826

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

923

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

827

924

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

828

925

"last_approval_request", "last_checked_ok",

829

926

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

859

956

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

860

957

"enabled")

861

958

862

# Uppercase and remove spaces from fingerprint for later

863

# comparison purposes with return value from the

864

# fingerprint() function

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(" ", ""))

865

964

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

866

965

.replace(" ", ""))

867

966

if "secret" in section:

910

1009

self.last_enabled = None

911

1010

self.expires = None

912

1011

913

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

914

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

1012

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

1013

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

1014

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

915

1015

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

916

1016

datetime.datetime.utcnow())

917

1017

945

1045

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

946

1046

# Already enabled

947

1047

return

948

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

949

1048

self.enabled = True

950

1049

self.last_enabled = datetime.datetime.utcnow()

951

1050

self.init_checker()

956

1055

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

957

1056

return False

958

1057

if not quiet:

959

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

1058

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

960

1059

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

961

1060

GLib.source_remove(self.disable_initiator_tag)

962

1061

self.disable_initiator_tag = None

974

1073

def __del__(self):

975

1074

self.disable()

976

1075

977

def init_checker(self):

978

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

979

# and every interval from then on.

1076

def init_checker(self, randomize_start=False):

1077

# Schedule a new checker to be started a randomly selected

1078

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

1079

# the startup of checkers over time when the server is

1080

# started.

980

1081

if self.checker_initiator_tag is not None:

981

1082

GLib.source_remove(self.checker_initiator_tag)

1083

interval_milliseconds = int(self.interval.total_seconds()

1084

* 1000)

1085

if randomize_start:

1086

delay_milliseconds = random.randrange(

1087

interval_milliseconds + 1)

1088

else:

1089

delay_milliseconds = interval_milliseconds

982

1090

self.checker_initiator_tag = GLib.timeout_add(

983

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

984

self.start_checker)

985

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

1091

delay_milliseconds, self.start_checker, randomize_start)

1092

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

1093

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

1094

# expire at the soonest one interval after a checker was

1095

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

1096

# time might have to be extended.

1097

now = datetime.datetime.utcnow()

1098

self.expires = now + delay + self.interval

1099

# Schedule a disable() at expire time

986

1100

if self.disable_initiator_tag is not None:

987

1101

GLib.source_remove(self.disable_initiator_tag)

988

1102

self.disable_initiator_tag = GLib.timeout_add(

989

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

990

# Also start a new checker *right now*.

991

self.start_checker()

1103

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

1104

self.disable)

992

1105

993

1106

def checker_callback(self, source, condition, connection,

994

1107

command):

995

1108

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

996

self.checker_callback_tag = None

997

self.checker = None

998

1109

# Read return code from connection (see call_pipe)

999

1110

returncode = connection.recv()

1000

1111

connection.close()

1112

if self.checker is not None:

1113

self.checker.join()

1114

self.checker_callback_tag = None

1115

self.checker = None

1001

1116

1002

1117

if returncode >= 0:

1003

1118

self.last_checker_status = returncode

1004

1119

self.last_checker_signal = None

1005

1120

if self.last_checker_status == 0:

1006

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

1007

vars(self))

1121

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

1008

1122

self.checked_ok()

1009

1123

else:

1010

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

1124

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

1011

1125

else:

1012

1126

self.last_checker_status = -1

1013

1127

self.last_checker_signal = -returncode

1014

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

1015

vars(self))

1128

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

1016

1129

return False

1017

1130

1018

1131

def checked_ok(self):

1037

1150

def need_approval(self):

1038

1151

self.last_approval_request = datetime.datetime.utcnow()

1039

1152

1040

def start_checker(self):

1153

def start_checker(self, start_was_randomized=False):

1041

1154

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

1042

1155

1043

1156

If a checker already exists, leave it running and do

1052

1165

# should be.

1053

1166

1054

1167

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

1055

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

1168

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

1056

1169

self.checker.join()

1057

1170

self.checker = None

1058

1171

# Start a new checker if needed

1059

1172

if self.checker is None:

1060

1173

# Escape attributes for the shell

1061

1174

escaped_attrs = {

1062

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

1175

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

1063

1176

for attr in self.runtime_expansions}

1064

1177

try:

1065

1178

command = self.checker_command % escaped_attrs

1066

1179

except TypeError as error:

1067

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

1068

self.checker_command,

1069

exc_info=error)

1180

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

1181

self.checker_command, exc_info=error)

1070

1182

return True # Try again later

1071

1183

self.current_checker_command = command

1072

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

1073

self.name)

1184

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

1074

1185

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

1075

1186

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

1076

1187

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

1092

1203

kwargs=popen_args)

1093

1204

self.checker.start()

1094

1205

self.checker_callback_tag = GLib.io_add_watch(

1095

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

1206

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

1207

GLib.PRIORITY_DEFAULT, GLib.IO_IN,

1096

1208

self.checker_callback, pipe[0], command)

1209

if start_was_randomized:

1210

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

1211

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

1212

# interval from then on.

1213

now = datetime.datetime.utcnow()

1214

self.checker_initiator_tag = GLib.timeout_add(

1215

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

1216

self.start_checker)

1217

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

1218

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

1219

return False

1097

1220

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

1098

1221

return True

1099

1222

1104

1227

self.checker_callback_tag = None

1105

1228

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

1106

1229

return

1107

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

1230

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

1108

1231

self.checker.terminate()

1109

1232

self.checker = None

1110

1233

1137

1260

func._dbus_name = func.__name__

1138

1261

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

1139

1262

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

1140

func._dbus_get_args_options = {'byte_arrays': byte_arrays}

1263

func._dbus_get_args_options = {"byte_arrays": byte_arrays}

1141

1264

return func

1142

1265

1143

1266

return decorator

1232

1355

1233

1356

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1234

1357

out_signature="s",

1235

path_keyword='object_path',

1236

connection_keyword='connection')

1358

path_keyword="object_path",

1359

connection_keyword="connection")

1237

1360

def Introspect(self, object_path, connection):

1238

1361

"""Overloading of standard D-Bus method.

1239

1362

1288

1411

document.unlink()

1289

1412

except (AttributeError, xml.dom.DOMException,

1290

1413

xml.parsers.expat.ExpatError) as error:

1291

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

1292

exc_info=error)

1414

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

1415

exc_info=error)

1293

1416

return xmlstring

1294

1417

1295

1418

1353

1476

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

1354

1477

"'ay' signature {!r}"

1355

1478

.format(prop._dbus_signature))

1356

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

1357

for byte in value))

1479

value = dbus.ByteArray(bytes(value))

1358

1480

prop(value)

1359

1481

1360

1482

@dbus.service.method(dbus.PROPERTIES_IFACE,

1393

1515

1394

1516

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1395

1517

out_signature="s",

1396

path_keyword='object_path',

1397

connection_keyword='connection')

1518

path_keyword="object_path",

1519

connection_keyword="connection")

1398

1520

def Introspect(self, object_path, connection):

1399

1521

"""Overloading of standard D-Bus method.

1400

1522

1456

1578

document.unlink()

1457

1579

except (AttributeError, xml.dom.DOMException,

1458

1580

xml.parsers.expat.ExpatError) as error:

1459

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

1460

exc_info=error)

1581

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

1582

exc_info=error)

1461

1583

return xmlstring

1462

1584

1463

1585

1495

1617

1496

1618

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1497

1619

out_signature="s",

1498

path_keyword='object_path',

1499

connection_keyword='connection')

1620

path_keyword="object_path",

1621

connection_keyword="connection")

1500

1622

def Introspect(self, object_path, connection):

1501

1623

"""Overloading of standard D-Bus method.

1502

1624

1527

1649

document.unlink()

1528

1650

except (AttributeError, xml.dom.DOMException,

1529

1651

xml.parsers.expat.ExpatError) as error:

1530

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

1531

exc_info=error)

1652

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

1653

exc_info=error)

1532

1654

return xmlstring

1533

1655

1534

1656

1998

2120

def Name_dbus_property(self):

1999

2121

return dbus.String(self.name)

2000

2122

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

2001

2130

# Fingerprint - property

2002

2131

@dbus_annotations(

2003

2132

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

2158

2287

del _interface

2159

2288

2160

2289

2161

class ProxyClient(object):

2162

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

2290

class ProxyClient:

2291

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

2163

2292

self._pipe = child_pipe

2164

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

2293

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

2165

2294

if not self._pipe.recv():

2166

raise KeyError(fpr)

2295

raise KeyError(key_id or fpr)

2167

2296

2168

2297

def __getattribute__(self, name):

2169

if name == '_pipe':

2298

if name == "_pipe":

2170

2299

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

2171

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

2300

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

2172

2301

data = self._pipe.recv()

2173

if data[0] == 'data':

2302

if data[0] == "data":

2174

2303

return data[1]

2175

if data[0] == 'function':

2304

if data[0] == "function":

2176

2305

2177

2306

def func(*args, **kwargs):

2178

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

2307

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

2179

2308

return self._pipe.recv()[1]

2180

2309

2181

2310

return func

2182

2311

2183

2312

def __setattr__(self, name, value):

2184

if name == '_pipe':

2313

if name == "_pipe":

2185

2314

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

2186

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

2315

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

2187

2316

2188

2317

2189

2318

class ClientHandler(socketserver.BaseRequestHandler, object):

2194

2323

2195

2324

def handle(self):

2196

2325

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

2197

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

2198

str(self.client_address))

2199

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

2200

self.server.child_pipe.fileno())

2326

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

2327

str(self.client_address))

2328

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

2201

2329

2202

2330

session = gnutls.ClientSession(self.request)

2203

2331

2204

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

2332

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

2205

2333

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

2206

2334

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

2207

2335

# "+DHE-DSS"))

2209

2337

priority = self.server.gnutls_priority

2210

2338

if priority is None:

2211

2339

priority = "NORMAL"

2212

gnutls.priority_set_direct(session._c_object,

2213

priority.encode("utf-8"),

2214

None)

2340

gnutls.priority_set_direct(session,

2341

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

2215

2342

2216

2343

# Start communication using the Mandos protocol

2217

2344

# Get protocol number

2218

2345

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

2219

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

2346

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

2220

2347

try:

2221

2348

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

2222

2349

raise RuntimeError(line)

2223

2350

except (ValueError, IndexError, RuntimeError) as error:

2224

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

2351

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

2225

2352

return

2226

2353

2227

2354

# Start GnuTLS connection

2228

2355

try:

2229

2356

session.handshake()

2230

2357

except gnutls.Error as error:

2231

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

2358

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

2232

2359

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

2233

2360

# established. Just abandon the request.

2234

2361

return

2235

logger.debug("Handshake succeeded")

2362

log.debug("Handshake succeeded")

2236

2363

2237

2364

approval_required = False

2238

2365

try:

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,

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,

2249

2390

self.client_address)

2250

2391

except KeyError:

2251

2392

return

2257

2398

2258

2399

while True:

2259

2400

if not client.enabled:

2260

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

2261

client.name)

2401

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

2262

2402

if self.server.use_dbus:

2263

2403

# Emit D-Bus signal

2264

2404

client.Rejected("Disabled")

2268

2408

# We are approved or approval is disabled

2269

2409

break

2270

2410

elif client.approved is None:

2271

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

2272

client.name)

2411

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

2412

client.name)

2273

2413

if self.server.use_dbus:

2274

2414

# Emit D-Bus signal

2275

2415

client.NeedApproval(

2276

2416

client.approval_delay.total_seconds()

2277

2417

* 1000, client.approved_by_default)

2278

2418

else:

2279

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

2280

client.name)

2419

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

2420

client.name)

2281

2421

if self.server.use_dbus:

2282

2422

# Emit D-Bus signal

2283

2423

client.Rejected("Denied")

2291

2431

time2 = datetime.datetime.now()

2292

2432

if (time2 - time) >= delay:

2293

2433

if not client.approved_by_default:

2294

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

2295

" waiting for approval",

2296

client.name)

2434

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

2435

" waiting for approval",

2436

client.name)

2297

2437

if self.server.use_dbus:

2298

2438

# Emit D-Bus signal

2299

2439

client.Rejected("Approval timed out")

2306

2446

try:

2307

2447

session.send(client.secret)

2308

2448

except gnutls.Error as error:

2309

logger.warning("gnutls send failed",

2310

exc_info=error)

2449

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

2311

2450

return

2312

2451

2313

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

2452

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

2314

2453

# bump the timeout using extended_timeout

2315

2454

client.bump_timeout(client.extended_timeout)

2316

2455

if self.server.use_dbus:

2323

2462

try:

2324

2463

session.bye()

2325

2464

except gnutls.Error as error:

2326

logger.warning("GnuTLS bye failed",

2327

exc_info=error)

2465

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

2328

2466

2329

2467

@staticmethod

2330

2468

def peer_certificate(session):

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):

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)

2335

2483

# ...return invalid data

2336

2484

return b""

2337

2485

list_size = ctypes.c_uint(1)

2338

2486

cert_list = (gnutls.certificate_get_peers

2339

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

2487

(session, ctypes.byref(list_size)))

2340

2488

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

2341

2489

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

2342

2490

if list_size.value == 0:

2345

2493

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

2346

2494

2347

2495

@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

2348

2531

def fingerprint(openpgp):

2349

2532

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

2350

2533

# New GnuTLS "datum" with the OpenPGP public key

2364

2547

ctypes.byref(crtverify))

2365

2548

if crtverify.value != 0:

2366

2549

gnutls.openpgp_crt_deinit(crt)

2367

raise gnutls.CertificateSecurityError("Verify failed")

2550

raise gnutls.CertificateSecurityError(code

2551

=crtverify.value)

2368

2552

# New buffer for the fingerprint

2369

2553

buf = ctypes.create_string_buffer(20)

2370

2554

buf_len = ctypes.c_size_t()

2380

2564

return hex_fpr

2381

2565

2382

2566

2383

class MultiprocessingMixIn(object):

2567

class MultiprocessingMixIn:

2384

2568

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

2385

2569

2386

2570

def sub_process_main(self, request, address):

2398

2582

return proc

2399

2583

2400

2584

2401

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

2585

class MultiprocessingMixInWithPipe(MultiprocessingMixIn):

2402

2586

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

2403

2587

2404

2588

def process_request(self, request, client_address):

2419

2603

2420

2604

2421

2605

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

2422

socketserver.TCPServer, object):

2423

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

2606

socketserver.TCPServer):

2607

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

2424

2608

2425

2609

Attributes:

2426

2610

enabled: Boolean; whether this server is activated yet

2477

2661

if SO_BINDTODEVICE is None:

2478

2662

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

2479

2663

# common enough.

2480

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

2664

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

2481

2665

SO_BINDTODEVICE = 25

2482

2666

try:

2483

2667

self.socket.setsockopt(

2485

2669

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

2486

2670

except socket.error as error:

2487

2671

if error.errno == errno.EPERM:

2488

logger.error("No permission to bind to"

2489

" interface %s", self.interface)

2672

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

2673

self.interface)

2490

2674

elif error.errno == errno.ENOPROTOOPT:

2491

logger.error("SO_BINDTODEVICE not available;"

2492

" cannot bind to interface %s",

2493

self.interface)

2675

log.error("SO_BINDTODEVICE not available; cannot"

2676

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

2494

2677

elif error.errno == errno.ENODEV:

2495

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

2496

" cannot bind", self.interface)

2678

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

2679

" bind", self.interface)

2497

2680

else:

2498

2681

raise

2499

2682

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

2500

2683

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

2684

if self.server_address[1]:

2685

self.allow_reuse_address = True

2501

2686

if not self.server_address[0]:

2502

2687

if self.address_family == socket.AF_INET6:

2503

2688

any_address = "::" # in6addr_any

2556

2741

def add_pipe(self, parent_pipe, proc):

2557

2742

# Call "handle_ipc" for both data and EOF events

2558

2743

GLib.io_add_watch(

2559

parent_pipe.fileno(),

2560

GLib.IO_IN | GLib.IO_HUP,

2744

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

2745

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

2561

2746

functools.partial(self.handle_ipc,

2562

2747

parent_pipe=parent_pipe,

2563

2748

proc=proc))

2576

2761

request = parent_pipe.recv()

2577

2762

command = request[0]

2578

2763

2579

if command == 'init':

2580

fpr = request[1]

2581

address = request[2]

2764

if command == "init":

2765

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

2766

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

2767

address = request[3]

2582

2768

2583

2769

for c in self.clients.values():

2584

if c.fingerprint == fpr:

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:

2585

2777

client = c

2586

2778

break

2587

2779

else:

2588

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

2589

"dress: %s", fpr, address)

2780

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

2781

" %s", key_id or fpr, address)

2590

2782

if self.use_dbus:

2591

2783

# Emit D-Bus signal

2592

mandos_dbus_service.ClientNotFound(fpr,

2784

mandos_dbus_service.ClientNotFound(key_id or fpr,

2593

2785

address[0])

2594

2786

parent_pipe.send(False)

2595

2787

return False

2596

2788

2597

2789

GLib.io_add_watch(

2598

parent_pipe.fileno(),

2599

GLib.IO_IN | GLib.IO_HUP,

2790

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

2791

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

2600

2792

functools.partial(self.handle_ipc,

2601

2793

parent_pipe=parent_pipe,

2602

2794

proc=proc,

2605

2797

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

2606

2798

# same fileno

2607

2799

return False

2608

if command == 'funcall':

2800

if command == "funcall":

2609

2801

funcname = request[1]

2610

2802

args = request[2]

2611

2803

kwargs = request[3]

2612

2804

2613

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

2805

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

2614

2806

funcname)(*args,

2615

2807

**kwargs)))

2616

2808

2617

if command == 'getattr':

2809

if command == "getattr":

2618

2810

attrname = request[1]

2619

2811

if isinstance(client_object.__getattribute__(attrname),

2620

collections.Callable):

2621

parent_pipe.send(('function', ))

2812

collections.abc.Callable):

2813

parent_pipe.send(("function", ))

2622

2814

else:

2623

2815

parent_pipe.send((

2624

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

2816

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

2625

2817

2626

if command == 'setattr':

2818

if command == "setattr":

2627

2819

attrname = request[1]

2628

2820

value = request[2]

2629

2821

setattr(client_object, attrname, value)

2634

2826

def rfc3339_duration_to_delta(duration):

2635

2827

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

2636

2828

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)

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

2651

2845

"""

2652

2846

2653

2847

# Parsing an RFC 3339 duration with regular expressions is not

2733

2927

def string_to_delta(interval):

2734

2928

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

2735

2929

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)

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

2748

2942

"""

2749

2943

2750

2944

try:

2852

3046

2853

3047

options = parser.parse_args()

2854

3048

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

2860

3049

# 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")

2861

3056

server_defaults = {"interface": "",

2862

3057

"address": "",

2863

3058

"port": "",

2864

3059

"debug": "False",

2865

"priority":

2866

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

2867

":+SIGN-DSA-SHA256",

3060

"priority": priority,

2868

3061

"servicename": "Mandos",

2869

3062

"use_dbus": "True",

2870

3063

"use_ipv6": "True",

2875

3068

"foreground": "False",

2876

3069

"zeroconf": "True",

2877

3070

}

3071

del priority

2878

3072

2879

3073

# Parse config file for server-global settings

2880

server_config = configparser.SafeConfigParser(server_defaults)

3074

server_config = configparser.ConfigParser(server_defaults)

2881

3075

del server_defaults

2882

3076

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

2883

# Convert the SafeConfigParser object to a dict

3077

# Convert the ConfigParser object to a dict

2884

3078

server_settings = server_config.defaults()

2885

3079

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

2886

3080

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

2953

3147

2954

3148

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

2955

3149

syslogger.setFormatter(

2956

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

2957

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

3150

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

3151

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

2958

3152

server_settings["servicename"])))

2959

3153

2960

3154

# Parse config file with clients

2961

client_config = configparser.SafeConfigParser(Client

2962

.client_defaults)

3155

client_config = configparser.ConfigParser(Client.client_defaults)

2963

3156

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

2964

3157

"clients.conf"))

2965

3158

2985

3178

try:

2986

3179

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

2987

3180

except IOError as e:

2988

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

2989

exc_info=e)

3181

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

3182

exc_info=e)

2990

3183

2991

3184

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

2992

3185

("mandos", "mandos"),

3003

3196

try:

3004

3197

os.setgid(gid)

3005

3198

os.setuid(uid)

3006

if debug:

3007

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

3008

gid))

3199

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

3009

3200

except OSError as error:

3010

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

3011

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

3201

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

3202

os.strerror(error.errno))

3012

3203

if error.errno != errno.EPERM:

3013

3204

raise

3014

3205

3021

3212

3022

3213

@gnutls.log_func

3023

3214

def debug_gnutls(level, string):

3024

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

3215

log.debug("GnuTLS: %s",

3216

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

3025

3217

3026

3218

gnutls.global_set_log_function(debug_gnutls)

3027

3219

3036

3228

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

3037

3229

daemon()

3038

3230

3039

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

3040

# to inform GLib that threads will be used.

3041

GLib.threads_init()

3231

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

3232

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

3233

# need to inform GLib that threads will be used.

3234

GLib.threads_init()

3042

3235

3043

3236

global main_loop

3044

3237

# From the Avahi example code

3055

3248

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

3056

3249

do_not_queue=True)

3057

3250

except dbus.exceptions.DBusException as e:

3058

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

3251

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

3059

3252

use_dbus = False

3060

3253

server_settings["use_dbus"] = False

3061

3254

tcp_server.use_dbus = False

3120

3313

if isinstance(s, bytes)

3121

3314

else s) for s in

3122

3315

value["client_structure"]]

3123

# .name & .host

3124

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

3316

# .name, .host, and .checker_command

3317

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

3125

3318

if isinstance(value[k], bytes):

3126

3319

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"] = ""

3127

3324

# old_client_settings

3128

3325

# .keys()

3129

3326

old_client_settings = {

3133

3330

for key, value in

3134

3331

bytes_old_client_settings.items()}

3135

3332

del bytes_old_client_settings

3136

# .host

3333

# .host and .checker_command

3137

3334

for value in old_client_settings.values():

3138

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

3139

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

3140

.decode("utf-8"))

3335

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

3336

if isinstance(value[attribute], bytes):

3337

value[attribute] = (value[attribute]

3338

.decode("utf-8"))

3141

3339

os.remove(stored_state_path)

3142

3340

except IOError as e:

3143

3341

if e.errno == errno.ENOENT:

3144

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

3145

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

3342

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

3343

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

3146

3344

else:

3147

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

3148

exc_info=e)

3345

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

3346

exc_info=e)

3149

3347

raise

3150

3348

except EOFError as e:

3151

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

3152

"EOFError:",

3153

exc_info=e)

3349

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

3350

exc_info=e)

3154

3351

3155

3352

with PGPEngine() as pgp:

3156

3353

for client_name, client in clients_data.items():

3183

3380

if client["enabled"]:

3184

3381

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

3185

3382

if not client["last_checked_ok"]:

3186

logger.warning(

3187

"disabling client {} - Client never "

3188

"performed a successful checker".format(

3189

client_name))

3383

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

3384

" never performed a successful"

3385

" checker", client_name)

3190

3386

client["enabled"] = False

3191

3387

elif client["last_checker_status"] != 0:

3192

logger.warning(

3193

"disabling client {} - Client last"

3194

" checker failed with error code"

3195

" {}".format(

3196

client_name,

3197

client["last_checker_status"]))

3388

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

3389

" last checker failed with error"

3390

" code %s", client_name,

3391

client["last_checker_status"])

3198

3392

client["enabled"] = False

3199

3393

else:

3200

3394

client["expires"] = (

3201

3395

datetime.datetime.utcnow()

3202

3396

+ client["timeout"])

3203

logger.debug("Last checker succeeded,"

3204

" keeping {} enabled".format(

3205

client_name))

3397

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

3398

" enabled", client_name)

3206

3399

try:

3207

3400

client["secret"] = pgp.decrypt(

3208

3401

client["encrypted_secret"],

3209

3402

client_settings[client_name]["secret"])

3210

3403

except PGPError:

3211

3404

# If decryption fails, we use secret from new settings

3212

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

3213

client_name))

3405

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

3406

client_name)

3214

3407

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

3215

3408

["secret"])

3216

3409

3230

3423

server_settings=server_settings)

3231

3424

3232

3425

if not tcp_server.clients:

3233

logger.warning("No clients defined")

3426

log.warning("No clients defined")

3234

3427

3235

3428

if not foreground:

3236

3429

if pidfile is not None:

3239

3432

with pidfile:

3240

3433

print(pid, file=pidfile)

3241

3434

except IOError:

3242

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

3243

pidfilename, pid)

3435

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

3436

pidfilename, pid)

3244

3437

del pidfile

3245

3438

del pidfilename

3246

3439

3266

3459

pass

3267

3460

3268

3461

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

3269

def ClientNotFound(self, fingerprint, address):

3462

def ClientNotFound(self, key_id, address):

3270

3463

"D-Bus signal"

3271

3464

pass

3272

3465

3396

3589

3397

3590

try:

3398

3591

with tempfile.NamedTemporaryFile(

3399

mode='wb',

3592

mode="wb",

3400

3593

suffix=".pickle",

3401

prefix='clients-',

3594

prefix="clients-",

3402

3595

dir=os.path.dirname(stored_state_path),

3403

3596

delete=False) as stored_state:

3404

3597

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

3412

3605

except NameError:

3413

3606

pass

3414

3607

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

3415

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

3416

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

3608

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

3609

os.strerror(e.errno))

3417

3610

else:

3418

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

3419

exc_info=e)

3611

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

3612

exc_info=e)

3420

3613

raise

3421

3614

3422

3615

# Delete all clients, and settings from config

3439

3632

mandos_dbus_service.client_added_signal(client)

3440

3633

# Need to initiate checking of clients

3441

3634

if client.enabled:

3442

client.init_checker()

3635

client.init_checker(randomize_start=True)

3443

3636

3444

3637

tcp_server.enable()

3445

3638

tcp_server.server_activate()

3448

3641

if zeroconf:

3449

3642

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

3450

3643

if use_ipv6:

3451

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

3452

" flowinfo %d, scope_id %d",

3453

*tcp_server.socket.getsockname())

3644

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

3645

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

3454

3646

else: # IPv4

3455

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

3456

*tcp_server.socket.getsockname())

3647

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

3648

*tcp_server.socket.getsockname())

3457

3649

3458

3650

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

3459

3651

3463

3655

try:

3464

3656

service.activate()

3465

3657

except dbus.exceptions.DBusException as error:

3466

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

3658

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

3467

3659

cleanup()

3468

3660

sys.exit(1)

3469

3661

# End of Avahi example code

3470

3662

3471

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

3472

lambda *args, **kwargs:

3473

(tcp_server.handle_request

3474

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

3663

GLib.io_add_watch(

3664

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

3665

GLib.PRIORITY_DEFAULT, GLib.IO_IN,

3666

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

3667

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

3475

3668

3476

logger.debug("Starting main loop")

3669

log.debug("Starting main loop")

3477

3670

main_loop.run()

3478

3671

except AvahiError as error:

3479

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

3672

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

3480

3673

cleanup()

3481

3674

sys.exit(1)

3482

3675

except KeyboardInterrupt:

3483

3676

if debug:

3484

3677

print("", file=sys.stderr)

3485

logger.debug("Server received KeyboardInterrupt")

3486

logger.debug("Server exiting")

3678

log.debug("Server received KeyboardInterrupt")

3679

log.debug("Server exiting")

3487

3680

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

3488

3681

cleanup()

3489

3682

3490

3491

if __name__ == '__main__':

3492

main()

3683

3684

def parse_test_args():

3685

# type: () -> argparse.Namespace

3686

parser = argparse.ArgumentParser(add_help=False)

3687

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

3688

parser.add_argument("--prefix", )

3689

args, unknown_args = parser.parse_known_args()

3690

if args.check:

3691

# Remove test options from sys.argv

3692

sys.argv[1:] = unknown_args

3693

return args

3694

3695

# Add all tests from doctest strings

3696

def load_tests(loader, tests, none):

3697

import doctest

3698

tests.addTests(doctest.DocTestSuite())

3699

return tests

3700

3701

if __name__ == "__main__":

3702

options = parse_test_args()

3703

try:

3704

if options.check:

3705

extra_test_prefix = options.prefix

3706

if extra_test_prefix is not None:

3707

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

3708

.result.wasSuccessful()):

3709

sys.exit(1)

3710

class ExtraTestLoader(unittest.TestLoader):

3711

testMethodPrefix = extra_test_prefix

3712

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

3713

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

3714

else:

3715

unittest.main(argv=[""])

3716

else:

3717

main()

3718

finally:

3719

logging.shutdown()

3720

3721

# Local Variables:

3722

# run-tests:

3723

# (lambda (&optional extra)

3724

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

3725

# extra))

3726

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

3727

# (funcall remove-test-window)

3728

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

3729

# run-tests-in-test-buffer:

3730

# (lambda (dir &optional extra)

3731

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

3732

# (setq buffer-read-only nil

3733

# default-directory dir)

3734

# (erase-buffer)

3735

# (compilation-mode))

3736

# (let ((process-result

3737

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

3738

# (process-file-shell-command

3739

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

3740

# (and (numberp process-result)

3741

# (= process-result 0))))

3742

# get-command-line:

3743

# (lambda (&optional extra)

3744

# (let ((quoted-script

3745

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

3746

# (format

3747

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

3748

# quoted-script)))

3749

# get-script-name:

3750

# (lambda ()

3751

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

3752

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

3753

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

3754

# (buffer-file-name))))

3755

# remove-test-window:

3756

# (lambda ()

3757

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

3758

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

3759

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

3760

# (lambda ()

3761

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

3762

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

3763

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

3764

# (display-buffer-overriding-action

3765

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

3766

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

3767

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

3768

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

3769

# eval:

3770

# (progn

3771

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

3772

# (funcall run-tests t)))

3773

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

3774

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

3775

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

3776

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

3777

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

3778

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

3779

# End: