/mandos/trunk : revision 1193

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#!/usr/bin/python3 -bI

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

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# -*- mode: python; after-save-hook: (lambda () (let ((command (if (fboundp 'file-local-name) (file-local-name (buffer-file-name)) (or (file-remote-p (buffer-file-name) 'localname) (buffer-file-name))))) (if (= (progn (if (get-buffer "*Test*") (kill-buffer "*Test*")) (process-file-shell-command (format "%s --check" (shell-quote-argument command)) nil "*Test*")) 0) (let ((w (get-buffer-window "*Test*"))) (if w (delete-window w))) (progn (with-current-buffer "*Test*" (compilation-mode)) (display-buffer "*Test*" '(display-buffer-in-side-window)))))); coding: utf-8 -*-

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#

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

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#

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

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#

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# Everything else is

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#

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# This file is part of Mandos.

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#

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#

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

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#

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from __future__ import (division, absolute_import, print_function,

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unicode_literals)

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except ImportError:

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pass

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import sys

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import unittest

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import argparse

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import logging

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import os

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try:

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import SocketServer as socketserver

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except ImportError:

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import socketserver

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import socket

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import argparse

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import datetime

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import errno

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try:

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import ConfigParser as configparser

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except ImportError:

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import configparser

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import sys

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import re

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import os

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import signal

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import subprocess

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import atexit

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import stat

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import logging

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import logging.handlers

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import pwd

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import contextlib

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import itertools

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import collections

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import codecs

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import random

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import shlex

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import unittest

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import dbus

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import dbus.service

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if sys.version_info.major == 2:

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__metaclass__ = type

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str = unicode

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input = raw_input

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

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try:

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collections.abc.Callable

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except AttributeError:

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class abc:

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Callable = collections.Callable

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collections.abc = abc

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del abc

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# Add shlex.quote if it does not exist

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try:

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shlex.quote

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except AttributeError:

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shlex.quote = re.escape

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# Show warnings by default

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if not sys.warnoptions:

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if sys.version_info < (3, 2):

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configparser.Configparser = configparser.SafeConfigParser

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version = "1.8.16"

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version = "1.8.9"

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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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logger = logging.getLogger()

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

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syslogger = None

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

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dir=self.tempdir) as passfile:

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passfile.write(passphrase)

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passfile.flush()

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

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"--passphrase-file",

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

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'--passphrase-file',

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passfile.name]

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+ self.gnupgargs,

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stdin=subprocess.PIPE,

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dir=self.tempdir) as passfile:

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passfile.write(passphrase)

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passfile.flush()

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

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"--passphrase-file",

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

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'--passphrase-file',

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passfile.name]

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+ self.gnupgargs,

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stdin=subprocess.PIPE,

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Attributes:

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

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Used to optionally bind to the specified interface.

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name: string; Example: "Mandos"

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

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name: string; Example: 'Mandos'

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

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

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port: integer; what port to announce

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TXT: list of strings; TXT record for the service

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def rename(self, remove=True):

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

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if self.rename_count >= self.max_renames:

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

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" after %i retries, exiting.",

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self.rename_count)

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

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" after %i retries, exiting.",

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self.rename_count)

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raise AvahiServiceError("Too many renames")

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self.name = str(

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self.server.GetAlternativeServiceName(self.name))

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self.rename_count += 1

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

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self.name)

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

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self.name)

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if remove:

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self.remove()

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try:

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except dbus.exceptions.DBusException as error:

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if (error.get_dbus_name()

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

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

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

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return self.rename(remove=False)

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else:

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

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

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self.cleanup()

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os._exit(1)

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avahi.DBUS_INTERFACE_ENTRY_GROUP)

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self.entry_group_state_changed_match = (

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self.group.connect_to_signal(

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"StateChanged", self.entry_group_state_changed))

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

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self.name, self.type)

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'StateChanged', self.entry_group_state_changed))

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

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self.name, self.type)

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self.group.AddService(

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self.interface,

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self.protocol,

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def entry_group_state_changed(self, state, error):

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

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

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

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if state == avahi.ENTRY_GROUP_ESTABLISHED:

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log.debug("Zeroconf service established.")

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logger.debug("Zeroconf service established.")

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elif state == avahi.ENTRY_GROUP_COLLISION:

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

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

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self.rename()

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elif state == avahi.ENTRY_GROUP_FAILURE:

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

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str(error))

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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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def cleanup(self):

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

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

478

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

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

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bad_states = {

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avahi.SERVER_INVALID: "Zeroconf server invalid",

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avahi.SERVER_REGISTERING: None,

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if state in bad_states:

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if bad_states[state] is not None:

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if error is None:

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log.error(bad_states[state])

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logger.error(bad_states[state])

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else:

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

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

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self.cleanup()

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elif state == avahi.SERVER_RUNNING:

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try:

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except dbus.exceptions.DBusException as error:

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if (error.get_dbus_name()

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

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

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logger.info("Local Zeroconf service name"

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" collision.")

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return self.rename(remove=False)

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else:

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

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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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else:

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if error is None:

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

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

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else:

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

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

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def activate(self):

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

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class AvahiServiceToSyslog(AvahiService):

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

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

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

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**kwargs)

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

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syslogger.setFormatter(logging.Formatter(

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

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

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.format(self.name)))

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return ret

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OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h

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# Types

565

class _session_int(ctypes.Structure):

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class session_int(ctypes.Structure):

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_fields_ = []

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session_t = ctypes.POINTER(_session_int)

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session_t = ctypes.POINTER(session_int)

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569

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class certificate_credentials_st(ctypes.Structure):

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_fields_ = []

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certificate_type_t = ctypes.c_int

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class datum_t(ctypes.Structure):

576

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

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("size", ctypes.c_uint)]

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

560

('size', ctypes.c_uint)]

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561

579

class _openpgp_crt_int(ctypes.Structure):

562

class openpgp_crt_int(ctypes.Structure):

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_fields_ = []

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openpgp_crt_t = ctypes.POINTER(_openpgp_crt_int)

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openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)

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openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h

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

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credentials_type_t = ctypes.c_int

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# gnutls.strerror()

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self.code = code

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if message is None and code is not None:

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message = gnutls.strerror(code).decode(

597

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

579

message = gnutls.strerror(code)

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

599

581

message, *args)

600

582

601

583

class CertificateSecurityError(Error):

602

584

pass

603

585

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

586

# Classes

630

class Credentials(With_from_param):

587

class Credentials:

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588

def __init__(self):

632

self._as_parameter_ = gnutls.certificate_credentials_t()

633

gnutls.certificate_allocate_credentials(self)

589

self._c_object = gnutls.certificate_credentials_t()

590

gnutls.certificate_allocate_credentials(

591

ctypes.byref(self._c_object))

634

592

self.type = gnutls.CRD_CERTIFICATE

635

593

636

594

def __del__(self):

637

gnutls.certificate_free_credentials(self)

595

gnutls.certificate_free_credentials(self._c_object)

638

596

639

class ClientSession(With_from_param):

597

class ClientSession:

640

598

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

641

self._as_parameter_ = gnutls.session_t()

599

self._c_object = gnutls.session_t()

642

600

gnutls_flags = gnutls.CLIENT

643

601

if gnutls.check_version(b"3.5.6"):

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602

gnutls_flags |= gnutls.NO_TICKETS

645

603

if gnutls.has_rawpk:

646

604

gnutls_flags |= gnutls.ENABLE_RAWPK

647

gnutls.init(self, gnutls_flags)

605

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

648

606

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)

607

gnutls.set_default_priority(self._c_object)

608

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

609

gnutls.handshake_set_private_extensions(self._c_object,

610

True)

652

611

self.socket = socket

653

612

if credentials is None:

654

613

credentials = gnutls.Credentials()

655

gnutls.credentials_set(self, credentials.type,

656

credentials)

614

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

615

ctypes.cast(credentials._c_object,

616

ctypes.c_void_p))

657

617

self.credentials = credentials

658

618

659

619

def __del__(self):

660

gnutls.deinit(self)

620

gnutls.deinit(self._c_object)

661

621

662

622

def handshake(self):

663

return gnutls.handshake(self)

623

return gnutls.handshake(self._c_object)

664

624

665

625

def send(self, data):

666

626

data = bytes(data)

667

627

data_len = len(data)

668

628

while data_len > 0:

669

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

629

data_len -= gnutls.record_send(self._c_object,

630

data[-data_len:],

670

631

data_len)

671

632

672

633

def bye(self):

673

return gnutls.bye(self, gnutls.SHUT_RDWR)

634

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

674

635

675

636

# Error handling functions

676

637

def _error_code(result):

677

638

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

678

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

679

if result >= gnutls.E_SUCCESS:

639

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

640

if result >= 0:

680

641

return result

681

642

if result == gnutls.E_NO_CERTIFICATE_FOUND:

682

643

raise gnutls.CertificateSecurityError(code=result)

683

644

raise gnutls.Error(code=result)

684

645

685

def _retry_on_error(result, func, arguments,

686

_error_code=_error_code):

646

def _retry_on_error(result, func, arguments):

687

647

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

688

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

689

while result < gnutls.E_SUCCESS:

648

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

649

while result < 0:

690

650

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

691

651

return _error_code(result)

692

652

result = func(*arguments)

697

657

698

658

# Functions

699

659

priority_set_direct = _library.gnutls_priority_set_direct

700

priority_set_direct.argtypes = [ClientSession, ctypes.c_char_p,

660

priority_set_direct.argtypes = [session_t, ctypes.c_char_p,

701

661

ctypes.POINTER(ctypes.c_char_p)]

702

662

priority_set_direct.restype = _error_code

703

663

704

664

init = _library.gnutls_init

705

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

665

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

706

666

init.restype = _error_code

707

667

708

668

set_default_priority = _library.gnutls_set_default_priority

709

set_default_priority.argtypes = [ClientSession]

669

set_default_priority.argtypes = [session_t]

710

670

set_default_priority.restype = _error_code

711

671

712

672

record_send = _library.gnutls_record_send

713

record_send.argtypes = [ClientSession, ctypes.c_void_p,

673

record_send.argtypes = [session_t, ctypes.c_void_p,

714

674

ctypes.c_size_t]

715

675

record_send.restype = ctypes.c_ssize_t

716

676

record_send.errcheck = _retry_on_error

718

678

certificate_allocate_credentials = (

719

679

_library.gnutls_certificate_allocate_credentials)

720

680

certificate_allocate_credentials.argtypes = [

721

PointerTo(Credentials)]

681

ctypes.POINTER(certificate_credentials_t)]

722

682

certificate_allocate_credentials.restype = _error_code

723

683

724

684

certificate_free_credentials = (

725

685

_library.gnutls_certificate_free_credentials)

726

certificate_free_credentials.argtypes = [Credentials]

686

certificate_free_credentials.argtypes = [

687

certificate_credentials_t]

727

688

certificate_free_credentials.restype = None

728

689

729

690

handshake_set_private_extensions = (

730

691

_library.gnutls_handshake_set_private_extensions)

731

handshake_set_private_extensions.argtypes = [ClientSession,

692

handshake_set_private_extensions.argtypes = [session_t,

732

693

ctypes.c_int]

733

694

handshake_set_private_extensions.restype = None

734

695

735

696

credentials_set = _library.gnutls_credentials_set

736

credentials_set.argtypes = [ClientSession, credentials_type_t,

737

CastToVoidPointer(Credentials)]

697

credentials_set.argtypes = [session_t, credentials_type_t,

698

ctypes.c_void_p]

738

699

credentials_set.restype = _error_code

739

700

740

701

strerror = _library.gnutls_strerror

742

703

strerror.restype = ctypes.c_char_p

743

704

744

705

certificate_type_get = _library.gnutls_certificate_type_get

745

certificate_type_get.argtypes = [ClientSession]

706

certificate_type_get.argtypes = [session_t]

746

707

certificate_type_get.restype = _error_code

747

708

748

709

certificate_get_peers = _library.gnutls_certificate_get_peers

749

certificate_get_peers.argtypes = [ClientSession,

710

certificate_get_peers.argtypes = [session_t,

750

711

ctypes.POINTER(ctypes.c_uint)]

751

712

certificate_get_peers.restype = ctypes.POINTER(datum_t)

752

713

759

720

global_set_log_function.restype = None

760

721

761

722

deinit = _library.gnutls_deinit

762

deinit.argtypes = [ClientSession]

723

deinit.argtypes = [session_t]

763

724

deinit.restype = None

764

725

765

726

handshake = _library.gnutls_handshake

766

handshake.argtypes = [ClientSession]

767

handshake.restype = ctypes.c_int

727

handshake.argtypes = [session_t]

728

handshake.restype = _error_code

768

729

handshake.errcheck = _retry_on_error

769

730

770

731

transport_set_ptr = _library.gnutls_transport_set_ptr

771

transport_set_ptr.argtypes = [ClientSession, transport_ptr_t]

732

transport_set_ptr.argtypes = [session_t, transport_ptr_t]

772

733

transport_set_ptr.restype = None

773

734

774

735

bye = _library.gnutls_bye

775

bye.argtypes = [ClientSession, close_request_t]

776

bye.restype = ctypes.c_int

736

bye.argtypes = [session_t, close_request_t]

737

bye.restype = _error_code

777

738

bye.errcheck = _retry_on_error

778

739

779

740

check_version = _library.gnutls_check_version

796

757

797

758

x509_crt_fmt_t = ctypes.c_int

798

759

799

# All the function declarations below are from

800

# gnutls/abstract.h

760

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

801

761

pubkey_init = _library.gnutls_pubkey_init

802

762

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

803

763

pubkey_init.restype = _error_code

817

777

pubkey_deinit.argtypes = [pubkey_t]

818

778

pubkey_deinit.restype = None

819

779

else:

820

# All the function declarations below are from

821

# gnutls/openpgp.h

780

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

822

781

823

782

openpgp_crt_init = _library.gnutls_openpgp_crt_init

824

783

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

830

789

openpgp_crt_fmt_t]

831

790

openpgp_crt_import.restype = _error_code

832

791

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

]

792

openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self

793

openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,

794

ctypes.POINTER(ctypes.c_uint)]

840

795

openpgp_crt_verify_self.restype = _error_code

841

796

842

797

openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit

853

808

854

809

if check_version(b"3.6.4"):

855

810

certificate_type_get2 = _library.gnutls_certificate_type_get2

856

certificate_type_get2.argtypes = [ClientSession, ctypes.c_int]

811

certificate_type_get2.argtypes = [session_t, ctypes.c_int]

857

812

certificate_type_get2.restype = _error_code

858

813

859

814

# Remove non-public functions

875

830

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

876

831

877

832

Attributes:

878

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

833

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

879

834

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

880

835

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

881

836

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

882

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

837

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

883

838

running.

884

839

checker_callback_tag: a GLib event source tag, or None

885

840

checker_command: string; External command which is run to check

1009

964

self.last_enabled = None

1010

965

self.expires = None

1011

966

1012

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

1013

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

1014

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

967

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

968

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

969

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

1015

970

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

1016

971

datetime.datetime.utcnow())

1017

972

1045

1000

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

1046

1001

# Already enabled

1047

1002

return

1003

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

1048

1004

self.enabled = True

1049

1005

self.last_enabled = datetime.datetime.utcnow()

1050

1006

self.init_checker()

1055

1011

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

1056

1012

return False

1057

1013

if not quiet:

1058

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

1014

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

1059

1015

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

1060

1016

GLib.source_remove(self.disable_initiator_tag)

1061

1017

self.disable_initiator_tag = None

1073

1029

def __del__(self):

1074

1030

self.disable()

1075

1031

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.

1032

def init_checker(self):

1033

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

1034

# and every interval from then on.

1081

1035

if self.checker_initiator_tag is not None:

1082

1036

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

1037

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

1038

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

1039

self.start_checker)

1040

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

1100

1041

if self.disable_initiator_tag is not None:

1101

1042

GLib.source_remove(self.disable_initiator_tag)

1102

1043

self.disable_initiator_tag = GLib.timeout_add(

1103

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

1104

self.disable)

1044

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

1045

# Also start a new checker *right now*.

1046

self.start_checker()

1105

1047

1106

1048

def checker_callback(self, source, condition, connection,

1107

1049

command):

1118

1060

self.last_checker_status = returncode

1119

1061

self.last_checker_signal = None

1120

1062

if self.last_checker_status == 0:

1121

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

1063

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

1064

vars(self))

1122

1065

self.checked_ok()

1123

1066

else:

1124

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

1067

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

1125

1068

else:

1126

1069

self.last_checker_status = -1

1127

1070

self.last_checker_signal = -returncode

1128

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

1071

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

1072

vars(self))

1129

1073

return False

1130

1074

1131

1075

def checked_ok(self):

1150

1094

def need_approval(self):

1151

1095

self.last_approval_request = datetime.datetime.utcnow()

1152

1096

1153

def start_checker(self, start_was_randomized=False):

1097

def start_checker(self):

1154

1098

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

1155

1099

1156

1100

If a checker already exists, leave it running and do

1165

1109

# should be.

1166

1110

1167

1111

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

1168

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

1112

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

1169

1113

self.checker.join()

1170

1114

self.checker = None

1171

1115

# Start a new checker if needed

1172

1116

if self.checker is None:

1173

1117

# Escape attributes for the shell

1174

1118

escaped_attrs = {

1175

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

1119

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

1176

1120

for attr in self.runtime_expansions}

1177

1121

try:

1178

1122

command = self.checker_command % escaped_attrs

1179

1123

except TypeError as error:

1180

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

1181

self.checker_command, exc_info=error)

1124

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

1125

self.checker_command,

1126

exc_info=error)

1182

1127

return True # Try again later

1183

1128

self.current_checker_command = command

1184

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

1129

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

1130

self.name)

1185

1131

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

1186

1132

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

1187

1133

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

1206

1152

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

1207

1153

GLib.PRIORITY_DEFAULT, GLib.IO_IN,

1208

1154

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

1155

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

1221

1156

return True

1222

1157

1227

1162

self.checker_callback_tag = None

1228

1163

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

1229

1164

return

1230

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

1165

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

1231

1166

self.checker.terminate()

1232

1167

self.checker = None

1233

1168

1260

1195

func._dbus_name = func.__name__

1261

1196

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

1262

1197

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

1263

func._dbus_get_args_options = {"byte_arrays": byte_arrays}

1198

func._dbus_get_args_options = {'byte_arrays': byte_arrays}

1264

1199

return func

1265

1200

1266

1201

return decorator

1355

1290

1356

1291

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1357

1292

out_signature="s",

1358

path_keyword="object_path",

1359

connection_keyword="connection")

1293

path_keyword='object_path',

1294

connection_keyword='connection')

1360

1295

def Introspect(self, object_path, connection):

1361

1296

"""Overloading of standard D-Bus method.

1362

1297

1411

1346

document.unlink()

1412

1347

except (AttributeError, xml.dom.DOMException,

1413

1348

xml.parsers.expat.ExpatError) as error:

1414

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

1415

exc_info=error)

1349

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

1350

exc_info=error)

1416

1351

return xmlstring

1417

1352

1418

1353

1515

1450

1516

1451

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1517

1452

out_signature="s",

1518

path_keyword="object_path",

1519

connection_keyword="connection")

1453

path_keyword='object_path',

1454

connection_keyword='connection')

1520

1455

def Introspect(self, object_path, connection):

1521

1456

"""Overloading of standard D-Bus method.

1522

1457

1578

1513

document.unlink()

1579

1514

except (AttributeError, xml.dom.DOMException,

1580

1515

xml.parsers.expat.ExpatError) as error:

1581

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

1582

exc_info=error)

1516

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

1517

exc_info=error)

1583

1518

return xmlstring

1584

1519

1585

1520

1617

1552

1618

1553

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1619

1554

out_signature="s",

1620

path_keyword="object_path",

1621

connection_keyword="connection")

1555

path_keyword='object_path',

1556

connection_keyword='connection')

1622

1557

def Introspect(self, object_path, connection):

1623

1558

"""Overloading of standard D-Bus method.

1624

1559

1649

1584

document.unlink()

1650

1585

except (AttributeError, xml.dom.DOMException,

1651

1586

xml.parsers.expat.ExpatError) as error:

1652

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

1653

exc_info=error)

1587

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

1588

exc_info=error)

1654

1589

return xmlstring

1655

1590

1656

1591

2290

2225

class ProxyClient:

2291

2226

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

2292

2227

self._pipe = child_pipe

2293

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

2228

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

2294

2229

if not self._pipe.recv():

2295

2230

raise KeyError(key_id or fpr)

2296

2231

2297

2232

def __getattribute__(self, name):

2298

if name == "_pipe":

2233

if name == '_pipe':

2299

2234

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

2300

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

2235

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

2301

2236

data = self._pipe.recv()

2302

if data[0] == "data":

2237

if data[0] == 'data':

2303

2238

return data[1]

2304

if data[0] == "function":

2239

if data[0] == 'function':

2305

2240

2306

2241

def func(*args, **kwargs):

2307

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

2242

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

2308

2243

return self._pipe.recv()[1]

2309

2244

2310

2245

return func

2311

2246

2312

2247

def __setattr__(self, name, value):

2313

if name == "_pipe":

2248

if name == '_pipe':

2314

2249

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

2315

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

2250

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

2316

2251

2317

2252

2318

2253

class ClientHandler(socketserver.BaseRequestHandler, object):

2323

2258

2324

2259

def handle(self):

2325

2260

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())

2261

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

2262

str(self.client_address))

2263

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

2264

self.server.child_pipe.fileno())

2329

2265

2330

2266

session = gnutls.ClientSession(self.request)

2331

2267

2332

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

2268

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

2333

2269

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

2334

2270

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

2335

2271

# "+DHE-DSS"))

2337

2273

priority = self.server.gnutls_priority

2338

2274

if priority is None:

2339

2275

priority = "NORMAL"

2340

gnutls.priority_set_direct(session,

2341

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

2276

gnutls.priority_set_direct(session._c_object,

2277

priority.encode("utf-8"),

2278

None)

2342

2279

2343

2280

# Start communication using the Mandos protocol

2344

2281

# Get protocol number

2345

2282

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

2346

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

2283

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

2347

2284

try:

2348

2285

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

2349

2286

raise RuntimeError(line)

2350

2287

except (ValueError, IndexError, RuntimeError) as error:

2351

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

2288

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

2352

2289

return

2353

2290

2354

2291

# Start GnuTLS connection

2355

2292

try:

2356

2293

session.handshake()

2357

2294

except gnutls.Error as error:

2358

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

2295

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

2359

2296

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

2360

2297

# established. Just abandon the request.

2361

2298

return

2362

log.debug("Handshake succeeded")

2299

logger.debug("Handshake succeeded")

2363

2300

2364

2301

approval_required = False

2365

2302

try:

2369

2306

key_id = self.key_id(

2370

2307

self.peer_certificate(session))

2371

2308

except (TypeError, gnutls.Error) as error:

2372

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

2309

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

2373

2310

return

2374

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

2375

key_id.decode("utf-8",

2376

errors="replace"))

2311

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

2377

2312

2378

2313

else:

2379

2314

key_id = b""

2381

2316

fpr = self.fingerprint(

2382

2317

self.peer_certificate(session))

2383

2318

except (TypeError, gnutls.Error) as error:

2384

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

2319

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

2385

2320

return

2386

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

2321

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

2387

2322

2388

2323

try:

2389

2324

client = ProxyClient(child_pipe, key_id, fpr,

2398

2333

2399

2334

while True:

2400

2335

if not client.enabled:

2401

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

2336

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

2337

client.name)

2402

2338

if self.server.use_dbus:

2403

2339

# Emit D-Bus signal

2404

2340

client.Rejected("Disabled")

2408

2344

# We are approved or approval is disabled

2409

2345

break

2410

2346

elif client.approved is None:

2411

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

2412

client.name)

2347

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

2348

client.name)

2413

2349

if self.server.use_dbus:

2414

2350

# Emit D-Bus signal

2415

2351

client.NeedApproval(

2416

2352

client.approval_delay.total_seconds()

2417

2353

* 1000, client.approved_by_default)

2418

2354

else:

2419

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

2420

client.name)

2355

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

2356

client.name)

2421

2357

if self.server.use_dbus:

2422

2358

# Emit D-Bus signal

2423

2359

client.Rejected("Denied")

2431

2367

time2 = datetime.datetime.now()

2432

2368

if (time2 - time) >= delay:

2433

2369

if not client.approved_by_default:

2434

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

2435

" waiting for approval",

2436

client.name)

2370

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

2371

" waiting for approval",

2372

client.name)

2437

2373

if self.server.use_dbus:

2438

2374

# Emit D-Bus signal

2439

2375

client.Rejected("Approval timed out")

2446

2382

try:

2447

2383

session.send(client.secret)

2448

2384

except gnutls.Error as error:

2449

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

2385

logger.warning("gnutls send failed",

2386

exc_info=error)

2450

2387

return

2451

2388

2452

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

2389

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

2453

2390

# bump the timeout using extended_timeout

2454

2391

client.bump_timeout(client.extended_timeout)

2455

2392

if self.server.use_dbus:

2462

2399

try:

2463

2400

session.bye()

2464

2401

except gnutls.Error as error:

2465

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

2402

logger.warning("GnuTLS bye failed",

2403

exc_info=error)

2466

2404

2467

2405

@staticmethod

2468

2406

def peer_certificate(session):

2469

2407

"Return the peer's certificate as a bytestring"

2470

2408

try:

2471

cert_type = gnutls.certificate_type_get2(

2472

session, gnutls.CTYPE_PEERS)

2409

cert_type = gnutls.certificate_type_get2(session._c_object,

2410

gnutls.CTYPE_PEERS)

2473

2411

except AttributeError:

2474

cert_type = gnutls.certificate_type_get(session)

2412

cert_type = gnutls.certificate_type_get(session._c_object)

2475

2413

if gnutls.has_rawpk:

2476

2414

valid_cert_types = frozenset((gnutls.CRT_RAWPK,))

2477

2415

else:

2478

2416

valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))

2479

2417

# If not a valid certificate type...

2480

2418

if cert_type not in valid_cert_types:

2481

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

2482

valid_cert_types)

2419

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

2420

valid_cert_types)

2483

2421

# ...return invalid data

2484

2422

return b""

2485

2423

list_size = ctypes.c_uint(1)

2486

2424

cert_list = (gnutls.certificate_get_peers

2487

(session, ctypes.byref(list_size)))

2425

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

2488

2426

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

2489

2427

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

2490

2428

if list_size.value == 0:

2512

2450

buf = ctypes.create_string_buffer(32)

2513

2451

buf_len = ctypes.c_size_t(len(buf))

2514

2452

# 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))

2453

gnutls.pubkey_get_key_id(pubkey,

2454

gnutls.KEYID_USE_SHA256,

2455

ctypes.cast(ctypes.byref(buf),

2456

ctypes.POINTER(ctypes.c_ubyte)),

2457

ctypes.byref(buf_len))

2521

2458

# Deinit the certificate

2522

2459

gnutls.pubkey_deinit(pubkey)

2523

2460

2604

2541

2605

2542

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

2606

2543

socketserver.TCPServer):

2607

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

2544

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

2608

2545

2609

2546

Attributes:

2610

2547

enabled: Boolean; whether this server is activated yet

2661

2598

if SO_BINDTODEVICE is None:

2662

2599

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

2663

2600

# common enough.

2664

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

2601

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

2665

2602

SO_BINDTODEVICE = 25

2666

2603

try:

2667

2604

self.socket.setsockopt(

2669

2606

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

2670

2607

except socket.error as error:

2671

2608

if error.errno == errno.EPERM:

2672

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

2673

self.interface)

2609

logger.error("No permission to bind to"

2610

" interface %s", self.interface)

2674

2611

elif error.errno == errno.ENOPROTOOPT:

2675

log.error("SO_BINDTODEVICE not available; cannot"

2676

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

2612

logger.error("SO_BINDTODEVICE not available;"

2613

" cannot bind to interface %s",

2614

self.interface)

2677

2615

elif error.errno == errno.ENODEV:

2678

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

2679

" bind", self.interface)

2616

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

2617

" cannot bind", self.interface)

2680

2618

else:

2681

2619

raise

2682

2620

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

2761

2699

request = parent_pipe.recv()

2762

2700

command = request[0]

2763

2701

2764

if command == "init":

2702

if command == 'init':

2765

2703

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

2766

2704

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

2767

2705

address = request[3]

2768

2706

2769

2707

for c in self.clients.values():

2770

if key_id == ("E3B0C44298FC1C149AFBF4C8996FB924"

2771

"27AE41E4649B934CA495991B7852B855"):

2708

if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":

2772

2709

continue

2773

2710

if key_id and c.key_id == key_id:

2774

2711

client = c

2777

2714

client = c

2778

2715

break

2779

2716

else:

2780

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

2781

" %s", key_id or fpr, address)

2717

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

2718

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

2782

2719

if self.use_dbus:

2783

2720

# Emit D-Bus signal

2784

2721

mandos_dbus_service.ClientNotFound(key_id or fpr,

2797

2734

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

2798

2735

# same fileno

2799

2736

return False

2800

if command == "funcall":

2737

if command == 'funcall':

2801

2738

funcname = request[1]

2802

2739

args = request[2]

2803

2740

kwargs = request[3]

2804

2741

2805

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

2742

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

2806

2743

funcname)(*args,

2807

2744

**kwargs)))

2808

2745

2809

if command == "getattr":

2746

if command == 'getattr':

2810

2747

attrname = request[1]

2811

2748

if isinstance(client_object.__getattribute__(attrname),

2812

collections.abc.Callable):

2813

parent_pipe.send(("function", ))

2749

collections.Callable):

2750

parent_pipe.send(('function', ))

2814

2751

else:

2815

2752

parent_pipe.send((

2816

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

2753

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

2817

2754

2818

if command == "setattr":

2755

if command == 'setattr':

2819

2756

attrname = request[1]

2820

2757

value = request[2]

2821

2758

setattr(client_object, attrname, value)

2826

2763

def rfc3339_duration_to_delta(duration):

2827

2764

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

2828

2765

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

2766

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

2767

True

2768

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

2769

True

2770

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

2771

True

2772

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

2773

True

2774

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

2775

True

2776

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

2777

True

2778

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

2779

True

2845

2780

"""

2846

2781

2847

2782

# Parsing an RFC 3339 duration with regular expressions is not

2927

2862

def string_to_delta(interval):

2928

2863

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

2929

2864

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)

2865

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

2866

True

2867

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

2868

True

2869

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

2870

True

2871

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

2872

True

2873

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

2874

True

2875

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

2941

2876

True

2942

2877

"""

2943

2878

3147

3082

3148

3083

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

3149

3084

syslogger.setFormatter(

3150

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

3151

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

3085

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

3086

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

3152

3087

server_settings["servicename"])))

3153

3088

3154

3089

# Parse config file with clients

3178

3113

try:

3179

3114

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

3180

3115

except IOError as e:

3181

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

3182

exc_info=e)

3116

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

3117

exc_info=e)

3183

3118

3184

3119

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

3185

3120

("mandos", "mandos"),

3196

3131

try:

3197

3132

os.setgid(gid)

3198

3133

os.setuid(uid)

3199

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

3134

if debug:

3135

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

3136

gid))

3200

3137

except OSError as error:

3201

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

3202

os.strerror(error.errno))

3138

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

3139

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

3203

3140

if error.errno != errno.EPERM:

3204

3141

raise

3205

3142

3212

3149

3213

3150

@gnutls.log_func

3214

3151

def debug_gnutls(level, string):

3215

log.debug("GnuTLS: %s",

3216

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

3152

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

3217

3153

3218

3154

gnutls.global_set_log_function(debug_gnutls)

3219

3155

3248

3184

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

3249

3185

do_not_queue=True)

3250

3186

except dbus.exceptions.DBusException as e:

3251

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

3187

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

3252

3188

use_dbus = False

3253

3189

server_settings["use_dbus"] = False

3254

3190

tcp_server.use_dbus = False

3339

3275

os.remove(stored_state_path)

3340

3276

except IOError as e:

3341

3277

if e.errno == errno.ENOENT:

3342

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

3343

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

3278

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

3279

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

3344

3280

else:

3345

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

3346

exc_info=e)

3281

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

3282

exc_info=e)

3347

3283

raise

3348

3284

except EOFError as e:

3349

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

3350

exc_info=e)

3285

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

3286

"EOFError:",

3287

exc_info=e)

3351

3288

3352

3289

with PGPEngine() as pgp:

3353

3290

for client_name, client in clients_data.items():

3380

3317

if client["enabled"]:

3381

3318

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

3382

3319

if not client["last_checked_ok"]:

3383

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

3384

" never performed a successful"

3385

" checker", client_name)

3320

logger.warning(

3321

"disabling client {} - Client never "

3322

"performed a successful checker".format(

3323

client_name))

3386

3324

client["enabled"] = False

3387

3325

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"])

3326

logger.warning(

3327

"disabling client {} - Client last"

3328

" checker failed with error code"

3329

" {}".format(

3330

client_name,

3331

client["last_checker_status"]))

3392

3332

client["enabled"] = False

3393

3333

else:

3394

3334

client["expires"] = (

3395

3335

datetime.datetime.utcnow()

3396

3336

+ client["timeout"])

3397

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

3398

" enabled", client_name)

3337

logger.debug("Last checker succeeded,"

3338

" keeping {} enabled".format(

3339

client_name))

3399

3340

try:

3400

3341

client["secret"] = pgp.decrypt(

3401

3342

client["encrypted_secret"],

3402

3343

client_settings[client_name]["secret"])

3403

3344

except PGPError:

3404

3345

# If decryption fails, we use secret from new settings

3405

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

3406

client_name)

3346

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

3347

client_name))

3407

3348

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

3408

3349

["secret"])

3409

3350

3423

3364

server_settings=server_settings)

3424

3365

3425

3366

if not tcp_server.clients:

3426

log.warning("No clients defined")

3367

logger.warning("No clients defined")

3427

3368

3428

3369

if not foreground:

3429

3370

if pidfile is not None:

3432

3373

with pidfile:

3433

3374

print(pid, file=pidfile)

3434

3375

except IOError:

3435

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

3436

pidfilename, pid)

3376

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

3377

pidfilename, pid)

3437

3378

del pidfile

3438

3379

del pidfilename

3439

3380

3589

3530

3590

3531

try:

3591

3532

with tempfile.NamedTemporaryFile(

3592

mode="wb",

3533

mode='wb',

3593

3534

suffix=".pickle",

3594

prefix="clients-",

3535

prefix='clients-',

3595

3536

dir=os.path.dirname(stored_state_path),

3596

3537

delete=False) as stored_state:

3597

3538

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

3605

3546

except NameError:

3606

3547

pass

3607

3548

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

3608

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

3609

os.strerror(e.errno))

3549

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

3550

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

3610

3551

else:

3611

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

3612

exc_info=e)

3552

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

3553

exc_info=e)

3613

3554

raise

3614

3555

3615

3556

# Delete all clients, and settings from config

3632

3573

mandos_dbus_service.client_added_signal(client)

3633

3574

# Need to initiate checking of clients

3634

3575

if client.enabled:

3635

client.init_checker(randomize_start=True)

3576

client.init_checker()

3636

3577

3637

3578

tcp_server.enable()

3638

3579

tcp_server.server_activate()

3641

3582

if zeroconf:

3642

3583

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

3643

3584

if use_ipv6:

3644

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

3645

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

3585

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

3586

" flowinfo %d, scope_id %d",

3587

*tcp_server.socket.getsockname())

3646

3588

else: # IPv4

3647

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

3648

*tcp_server.socket.getsockname())

3589

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

3590

*tcp_server.socket.getsockname())

3649

3591

3650

3592

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

3651

3593

3655

3597

try:

3656

3598

service.activate()

3657

3599

except dbus.exceptions.DBusException as error:

3658

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

3600

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

3659

3601

cleanup()

3660

3602

sys.exit(1)

3661

3603

# End of Avahi example code

3666

3608

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

3667

3609

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

3668

3610

3669

log.debug("Starting main loop")

3611

logger.debug("Starting main loop")

3670

3612

main_loop.run()

3671

3613

except AvahiError as error:

3672

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

3614

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

3673

3615

cleanup()

3674

3616

sys.exit(1)

3675

3617

except KeyboardInterrupt:

3676

3618

if debug:

3677

3619

print("", file=sys.stderr)

3678

log.debug("Server received KeyboardInterrupt")

3679

log.debug("Server exiting")

3620

logger.debug("Server received KeyboardInterrupt")

3621

logger.debug("Server exiting")

3680

3622

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

3681

3623

cleanup()

3682

3624

3683

3625

3684

def parse_test_args():

3685

# type: () -> argparse.Namespace

3626

def should_only_run_tests():

3686

3627

parser = argparse.ArgumentParser(add_help=False)

3687

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

3688

parser.add_argument("--prefix", )

3628

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

3689

3629

args, unknown_args = parser.parse_known_args()

3690

if args.check:

3691

# Remove test options from sys.argv

3630

run_tests = args.check

3631

if run_tests:

3632

# Remove --check argument from sys.argv

3692

3633

sys.argv[1:] = unknown_args

3693

return args

3634

return run_tests

3694

3635

3695

3636

# Add all tests from doctest strings

3696

3637

def load_tests(loader, tests, none):

3698

3639

tests.addTests(doctest.DocTestSuite())

3699

3640

return tests

3700

3641

3701

if __name__ == "__main__":

3702

options = parse_test_args()

3642

if __name__ == '__main__':

3703

3643

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=[""])

3644

if should_only_run_tests():

3645

# Call using ./mandos --check [--verbose]

3646

unittest.main()

3716

3647

else:

3717

3648

main()

3718

3649

finally:

3719

3650

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: