/mandos/trunk : revision 1218

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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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39

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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 unittest

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import random

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import shlex

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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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if sys.version_info < (3, 2):

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configparser.Configparser = configparser.SafeConfigParser

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version = "1.8.17"

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version = "1.8.11"

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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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435

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)

441

self.group.AddService(

442

self.interface,

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self.protocol,

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def entry_group_state_changed(self, state, error):

452

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

453

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

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

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455

if state == avahi.ENTRY_GROUP_ESTABLISHED:

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log.debug("Zeroconf service established.")

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logger.debug("Zeroconf service established.")

457

elif state == avahi.ENTRY_GROUP_COLLISION:

458

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

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

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self.rename()

460

elif state == avahi.ENTRY_GROUP_FAILURE:

461

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))

463

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

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465

def cleanup(self):

475

476

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

477

"""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 = {

480

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:

487

if error is None:

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log.error(bad_states[state])

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logger.error(bad_states[state])

489

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()

492

elif state == avahi.SERVER_RUNNING:

493

try:

495

except dbus.exceptions.DBusException as error:

496

if (error.get_dbus_name()

497

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

498

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

498

logger.info("Local Zeroconf service name"

499

" collision.")

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500

return self.rename(remove=False)

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501

else:

501

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

502

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

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self.cleanup()

503

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os._exit(1)

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else:

505

506

if error is None:

506

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

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

507

508

else:

508

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

509

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"""

523

524

class AvahiServiceToSyslog(AvahiService):

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

525

526

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

526

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

527

**kwargs)

527

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

528

syslogger.setFormatter(logging.Formatter(

529

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

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

530

.format(self.name)))

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return ret

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562

OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h

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564

# Types

565

class _session_int(ctypes.Structure):

565

class session_int(ctypes.Structure):

566

_fields_ = []

567

session_t = ctypes.POINTER(_session_int)

567

session_t = ctypes.POINTER(session_int)

568

569

class certificate_credentials_st(ctypes.Structure):

570

_fields_ = []

573

certificate_type_t = ctypes.c_int

574

575

class datum_t(ctypes.Structure):

576

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

577

("size", ctypes.c_uint)]

576

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

577

('size', ctypes.c_uint)]

578

579

class _openpgp_crt_int(ctypes.Structure):

579

class openpgp_crt_int(ctypes.Structure):

580

_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

583

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

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credentials_type_t = ctypes.c_int

593

# gnutls.strerror()

594

self.code = code

595

if message is None and code is not None:

596

message = gnutls.strerror(code).decode(

597

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

596

message = gnutls.strerror(code)

598

597

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

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598

message, *args)

600

599

601

600

class CertificateSecurityError(Error):

602

601

pass

603

602

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

603

# Classes

630

class Credentials(With_from_param):

604

class Credentials:

631

605

def __init__(self):

632

self._as_parameter_ = gnutls.certificate_credentials_t()

633

gnutls.certificate_allocate_credentials(self)

606

self._c_object = gnutls.certificate_credentials_t()

607

gnutls.certificate_allocate_credentials(

608

ctypes.byref(self._c_object))

634

609

self.type = gnutls.CRD_CERTIFICATE

635

610

636

611

def __del__(self):

637

gnutls.certificate_free_credentials(self)

612

gnutls.certificate_free_credentials(self._c_object)

638

613

639

class ClientSession(With_from_param):

614

class ClientSession:

640

615

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

641

self._as_parameter_ = gnutls.session_t()

616

self._c_object = gnutls.session_t()

642

617

gnutls_flags = gnutls.CLIENT

643

618

if gnutls.check_version(b"3.5.6"):

644

619

gnutls_flags |= gnutls.NO_TICKETS

645

620

if gnutls.has_rawpk:

646

621

gnutls_flags |= gnutls.ENABLE_RAWPK

647

gnutls.init(self, gnutls_flags)

622

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

648

623

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)

624

gnutls.set_default_priority(self._c_object)

625

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

626

gnutls.handshake_set_private_extensions(self._c_object,

627

True)

652

628

self.socket = socket

653

629

if credentials is None:

654

630

credentials = gnutls.Credentials()

655

gnutls.credentials_set(self, credentials.type,

656

credentials)

631

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

632

ctypes.cast(credentials._c_object,

633

ctypes.c_void_p))

657

634

self.credentials = credentials

658

635

659

636

def __del__(self):

660

gnutls.deinit(self)

637

gnutls.deinit(self._c_object)

661

638

662

639

def handshake(self):

663

return gnutls.handshake(self)

640

return gnutls.handshake(self._c_object)

664

641

665

642

def send(self, data):

666

643

data = bytes(data)

667

644

data_len = len(data)

668

645

while data_len > 0:

669

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

646

data_len -= gnutls.record_send(self._c_object,

647

data[-data_len:],

670

648

data_len)

671

649

672

650

def bye(self):

673

return gnutls.bye(self, gnutls.SHUT_RDWR)

651

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

674

652

675

653

# Error handling functions

676

654

def _error_code(result):

677

655

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

678

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

679

if result >= gnutls.E_SUCCESS:

656

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

657

if result >= 0:

680

658

return result

681

659

if result == gnutls.E_NO_CERTIFICATE_FOUND:

682

660

raise gnutls.CertificateSecurityError(code=result)

683

661

raise gnutls.Error(code=result)

684

662

685

def _retry_on_error(result, func, arguments,

686

_error_code=_error_code):

663

def _retry_on_error(result, func, arguments):

687

664

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

688

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

689

while result < gnutls.E_SUCCESS:

665

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

666

while result < 0:

690

667

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

691

668

return _error_code(result)

692

669

result = func(*arguments)

697

674

698

675

# Functions

699

676

priority_set_direct = _library.gnutls_priority_set_direct

700

priority_set_direct.argtypes = [ClientSession, ctypes.c_char_p,

677

priority_set_direct.argtypes = [session_t, ctypes.c_char_p,

701

678

ctypes.POINTER(ctypes.c_char_p)]

702

679

priority_set_direct.restype = _error_code

703

680

704

681

init = _library.gnutls_init

705

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

682

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

706

683

init.restype = _error_code

707

684

708

685

set_default_priority = _library.gnutls_set_default_priority

709

set_default_priority.argtypes = [ClientSession]

686

set_default_priority.argtypes = [session_t]

710

687

set_default_priority.restype = _error_code

711

688

712

689

record_send = _library.gnutls_record_send

713

record_send.argtypes = [ClientSession, ctypes.c_void_p,

690

record_send.argtypes = [session_t, ctypes.c_void_p,

714

691

ctypes.c_size_t]

715

692

record_send.restype = ctypes.c_ssize_t

716

693

record_send.errcheck = _retry_on_error

718

695

certificate_allocate_credentials = (

719

696

_library.gnutls_certificate_allocate_credentials)

720

697

certificate_allocate_credentials.argtypes = [

721

PointerTo(Credentials)]

698

ctypes.POINTER(certificate_credentials_t)]

722

699

certificate_allocate_credentials.restype = _error_code

723

700

724

701

certificate_free_credentials = (

725

702

_library.gnutls_certificate_free_credentials)

726

certificate_free_credentials.argtypes = [Credentials]

703

certificate_free_credentials.argtypes = [

704

certificate_credentials_t]

727

705

certificate_free_credentials.restype = None

728

706

729

707

handshake_set_private_extensions = (

730

708

_library.gnutls_handshake_set_private_extensions)

731

handshake_set_private_extensions.argtypes = [ClientSession,

709

handshake_set_private_extensions.argtypes = [session_t,

732

710

ctypes.c_int]

733

711

handshake_set_private_extensions.restype = None

734

712

735

713

credentials_set = _library.gnutls_credentials_set

736

credentials_set.argtypes = [ClientSession, credentials_type_t,

737

CastToVoidPointer(Credentials)]

714

credentials_set.argtypes = [session_t, credentials_type_t,

715

ctypes.c_void_p]

738

716

credentials_set.restype = _error_code

739

717

740

718

strerror = _library.gnutls_strerror

742

720

strerror.restype = ctypes.c_char_p

743

721

744

722

certificate_type_get = _library.gnutls_certificate_type_get

745

certificate_type_get.argtypes = [ClientSession]

723

certificate_type_get.argtypes = [session_t]

746

724

certificate_type_get.restype = _error_code

747

725

748

726

certificate_get_peers = _library.gnutls_certificate_get_peers

749

certificate_get_peers.argtypes = [ClientSession,

727

certificate_get_peers.argtypes = [session_t,

750

728

ctypes.POINTER(ctypes.c_uint)]

751

729

certificate_get_peers.restype = ctypes.POINTER(datum_t)

752

730

759

737

global_set_log_function.restype = None

760

738

761

739

deinit = _library.gnutls_deinit

762

deinit.argtypes = [ClientSession]

740

deinit.argtypes = [session_t]

763

741

deinit.restype = None

764

742

765

743

handshake = _library.gnutls_handshake

766

handshake.argtypes = [ClientSession]

767

handshake.restype = ctypes.c_int

744

handshake.argtypes = [session_t]

745

handshake.restype = _error_code

768

746

handshake.errcheck = _retry_on_error

769

747

770

748

transport_set_ptr = _library.gnutls_transport_set_ptr

771

transport_set_ptr.argtypes = [ClientSession, transport_ptr_t]

749

transport_set_ptr.argtypes = [session_t, transport_ptr_t]

772

750

transport_set_ptr.restype = None

773

751

774

752

bye = _library.gnutls_bye

775

bye.argtypes = [ClientSession, close_request_t]

776

bye.restype = ctypes.c_int

753

bye.argtypes = [session_t, close_request_t]

754

bye.restype = _error_code

777

755

bye.errcheck = _retry_on_error

778

756

779

757

check_version = _library.gnutls_check_version

796

774

797

775

x509_crt_fmt_t = ctypes.c_int

798

776

799

# All the function declarations below are from

800

# gnutls/abstract.h

777

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

801

778

pubkey_init = _library.gnutls_pubkey_init

802

779

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

803

780

pubkey_init.restype = _error_code

817

794

pubkey_deinit.argtypes = [pubkey_t]

818

795

pubkey_deinit.restype = None

819

796

else:

820

# All the function declarations below are from

821

# gnutls/openpgp.h

797

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

822

798

823

799

openpgp_crt_init = _library.gnutls_openpgp_crt_init

824

800

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

830

806

openpgp_crt_fmt_t]

831

807

openpgp_crt_import.restype = _error_code

832

808

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

]

809

openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self

810

openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,

811

ctypes.POINTER(ctypes.c_uint)]

840

812

openpgp_crt_verify_self.restype = _error_code

841

813

842

814

openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit

853

825

854

826

if check_version(b"3.6.4"):

855

827

certificate_type_get2 = _library.gnutls_certificate_type_get2

856

certificate_type_get2.argtypes = [ClientSession, ctypes.c_int]

828

certificate_type_get2.argtypes = [session_t, ctypes.c_int]

857

829

certificate_type_get2.restype = _error_code

858

830

859

831

# Remove non-public functions

875

847

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

876

848

877

849

Attributes:

878

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

850

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

879

851

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

880

852

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

881

853

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

882

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

854

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

883

855

running.

884

856

checker_callback_tag: a GLib event source tag, or None

885

857

checker_command: string; External command which is run to check

961

933

# key_id() and fingerprint() functions

962

934

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

963

935

.replace(" ", ""))

964

client["fingerprint"] = (section.get("fingerprint",

965

"").upper()

936

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

966

937

.replace(" ", ""))

967

if not (client["key_id"] or client["fingerprint"]):

968

log.error("Skipping client %s without key_id or"

969

" fingerprint", client_name)

970

del settings[client_name]

971

continue

972

938

if "secret" in section:

973

939

client["secret"] = codecs.decode(section["secret"]

974

940

.encode("utf-8"),

1015

981

self.last_enabled = None

1016

982

self.expires = None

1017

983

1018

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

1019

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

1020

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

984

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

985

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

986

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

1021

987

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

1022

988

datetime.datetime.utcnow())

1023

989

1051

1017

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

1052

1018

# Already enabled

1053

1019

return

1020

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

1054

1021

self.enabled = True

1055

1022

self.last_enabled = datetime.datetime.utcnow()

1056

1023

self.init_checker()

1061

1028

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

1062

1029

return False

1063

1030

if not quiet:

1064

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

1031

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

1065

1032

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

1066

1033

GLib.source_remove(self.disable_initiator_tag)

1067

1034

self.disable_initiator_tag = None

1079

1046

def __del__(self):

1080

1047

self.disable()

1081

1048

1082

def init_checker(self, randomize_start=False):

1083

# Schedule a new checker to be started a randomly selected

1084

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

1085

# the startup of checkers over time when the server is

1086

# started.

1049

def init_checker(self):

1050

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

1051

# and every interval from then on.

1087

1052

if self.checker_initiator_tag is not None:

1088

1053

GLib.source_remove(self.checker_initiator_tag)

1089

interval_milliseconds = int(self.interval.total_seconds()

1090

* 1000)

1091

if randomize_start:

1092

delay_milliseconds = random.randrange(

1093

interval_milliseconds + 1)

1094

else:

1095

delay_milliseconds = interval_milliseconds

1096

1054

self.checker_initiator_tag = GLib.timeout_add(

1097

delay_milliseconds, self.start_checker, randomize_start)

1098

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

1099

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

1100

# expire at the soonest one interval after a checker was

1101

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

1102

# time might have to be extended.

1103

now = datetime.datetime.utcnow()

1104

self.expires = now + delay + self.interval

1105

# Schedule a disable() at expire time

1055

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

1056

+ 1)),

1057

self.start_checker)

1058

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

1106

1059

if self.disable_initiator_tag is not None:

1107

1060

GLib.source_remove(self.disable_initiator_tag)

1108

1061

self.disable_initiator_tag = GLib.timeout_add(

1109

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

1110

self.disable)

1062

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

1063

# Also start a new checker *right now*.

1064

self.start_checker()

1111

1065

1112

1066

def checker_callback(self, source, condition, connection,

1113

1067

command):

1124

1078

self.last_checker_status = returncode

1125

1079

self.last_checker_signal = None

1126

1080

if self.last_checker_status == 0:

1127

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

1081

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

1082

vars(self))

1128

1083

self.checked_ok()

1129

1084

else:

1130

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

1085

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

1131

1086

else:

1132

1087

self.last_checker_status = -1

1133

1088

self.last_checker_signal = -returncode

1134

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

1089

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

1090

vars(self))

1135

1091

return False

1136

1092

1137

1093

def checked_ok(self):

1156

1112

def need_approval(self):

1157

1113

self.last_approval_request = datetime.datetime.utcnow()

1158

1114

1159

def start_checker(self, start_was_randomized=False):

1115

def start_checker(self):

1160

1116

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

1161

1117

1162

1118

If a checker already exists, leave it running and do

1171

1127

# should be.

1172

1128

1173

1129

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

1174

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

1130

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

1175

1131

self.checker.join()

1176

1132

self.checker = None

1177

1133

# Start a new checker if needed

1183

1139

try:

1184

1140

command = self.checker_command % escaped_attrs

1185

1141

except TypeError as error:

1186

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

1187

self.checker_command, exc_info=error)

1142

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

1143

self.checker_command,

1144

exc_info=error)

1188

1145

return True # Try again later

1189

1146

self.current_checker_command = command

1190

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

1147

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

1148

self.name)

1191

1149

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

1192

1150

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

1193

1151

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

1212

1170

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

1213

1171

GLib.PRIORITY_DEFAULT, GLib.IO_IN,

1214

1172

self.checker_callback, pipe[0], command)

1215

if start_was_randomized:

1216

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

1217

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

1218

# interval from then on.

1219

now = datetime.datetime.utcnow()

1220

self.checker_initiator_tag = GLib.timeout_add(

1221

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

1222

self.start_checker)

1223

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

1224

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

1225

return False

1226

1173

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

1227

1174

return True

1228

1175

1233

1180

self.checker_callback_tag = None

1234

1181

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

1235

1182

return

1236

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

1183

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

1237

1184

self.checker.terminate()

1238

1185

self.checker = None

1239

1186

1266

1213

func._dbus_name = func.__name__

1267

1214

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

1268

1215

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

1269

func._dbus_get_args_options = {"byte_arrays": byte_arrays}

1216

func._dbus_get_args_options = {'byte_arrays': byte_arrays}

1270

1217

return func

1271

1218

1272

1219

return decorator

1361

1308

1362

1309

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1363

1310

out_signature="s",

1364

path_keyword="object_path",

1365

connection_keyword="connection")

1311

path_keyword='object_path',

1312

connection_keyword='connection')

1366

1313

def Introspect(self, object_path, connection):

1367

1314

"""Overloading of standard D-Bus method.

1368

1315

1417

1364

document.unlink()

1418

1365

except (AttributeError, xml.dom.DOMException,

1419

1366

xml.parsers.expat.ExpatError) as error:

1420

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

1421

exc_info=error)

1367

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

1368

exc_info=error)

1422

1369

return xmlstring

1423

1370

1424

1371

1521

1468

1522

1469

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1523

1470

out_signature="s",

1524

path_keyword="object_path",

1525

connection_keyword="connection")

1471

path_keyword='object_path',

1472

connection_keyword='connection')

1526

1473

def Introspect(self, object_path, connection):

1527

1474

"""Overloading of standard D-Bus method.

1528

1475

1584

1531

document.unlink()

1585

1532

except (AttributeError, xml.dom.DOMException,

1586

1533

xml.parsers.expat.ExpatError) as error:

1587

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

1588

exc_info=error)

1534

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

1535

exc_info=error)

1589

1536

return xmlstring

1590

1537

1591

1538

1623

1570

1624

1571

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1625

1572

out_signature="s",

1626

path_keyword="object_path",

1627

connection_keyword="connection")

1573

path_keyword='object_path',

1574

connection_keyword='connection')

1628

1575

def Introspect(self, object_path, connection):

1629

1576

"""Overloading of standard D-Bus method.

1630

1577

1655

1602

document.unlink()

1656

1603

except (AttributeError, xml.dom.DOMException,

1657

1604

xml.parsers.expat.ExpatError) as error:

1658

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

1659

exc_info=error)

1605

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

1606

exc_info=error)

1660

1607

return xmlstring

1661

1608

1662

1609

2296

2243

class ProxyClient:

2297

2244

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

2298

2245

self._pipe = child_pipe

2299

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

2246

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

2300

2247

if not self._pipe.recv():

2301

2248

raise KeyError(key_id or fpr)

2302

2249

2303

2250

def __getattribute__(self, name):

2304

if name == "_pipe":

2251

if name == '_pipe':

2305

2252

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

2306

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

2253

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

2307

2254

data = self._pipe.recv()

2308

if data[0] == "data":

2255

if data[0] == 'data':

2309

2256

return data[1]

2310

if data[0] == "function":

2257

if data[0] == 'function':

2311

2258

2312

2259

def func(*args, **kwargs):

2313

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

2260

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

2314

2261

return self._pipe.recv()[1]

2315

2262

2316

2263

return func

2317

2264

2318

2265

def __setattr__(self, name, value):

2319

if name == "_pipe":

2266

if name == '_pipe':

2320

2267

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

2321

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

2268

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

2322

2269

2323

2270

2324

2271

class ClientHandler(socketserver.BaseRequestHandler, object):

2329

2276

2330

2277

def handle(self):

2331

2278

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

2332

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

2333

str(self.client_address))

2334

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

2279

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

2280

str(self.client_address))

2281

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

2282

self.server.child_pipe.fileno())

2335

2283

2336

2284

session = gnutls.ClientSession(self.request)

2337

2285

2338

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

2286

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

2339

2287

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

2340

2288

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

2341

2289

# "+DHE-DSS"))

2343

2291

priority = self.server.gnutls_priority

2344

2292

if priority is None:

2345

2293

priority = "NORMAL"

2346

gnutls.priority_set_direct(session,

2347

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

2294

gnutls.priority_set_direct(session._c_object,

2295

priority.encode("utf-8"),

2296

None)

2348

2297

2349

2298

# Start communication using the Mandos protocol

2350

2299

# Get protocol number

2351

2300

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

2352

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

2301

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

2353

2302

try:

2354

2303

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

2355

2304

raise RuntimeError(line)

2356

2305

except (ValueError, IndexError, RuntimeError) as error:

2357

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

2306

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

2358

2307

return

2359

2308

2360

2309

# Start GnuTLS connection

2361

2310

try:

2362

2311

session.handshake()

2363

2312

except gnutls.Error as error:

2364

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

2313

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

2365

2314

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

2366

2315

# established. Just abandon the request.

2367

2316

return

2368

log.debug("Handshake succeeded")

2317

logger.debug("Handshake succeeded")

2369

2318

2370

2319

approval_required = False

2371

2320

try:

2375

2324

key_id = self.key_id(

2376

2325

self.peer_certificate(session))

2377

2326

except (TypeError, gnutls.Error) as error:

2378

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

2327

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

2379

2328

return

2380

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

2381

key_id.decode("utf-8",

2382

errors="replace"))

2329

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

2383

2330

2384

2331

else:

2385

2332

key_id = b""

2387

2334

fpr = self.fingerprint(

2388

2335

self.peer_certificate(session))

2389

2336

except (TypeError, gnutls.Error) as error:

2390

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

2337

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

2391

2338

return

2392

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

2339

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

2393

2340

2394

2341

try:

2395

2342

client = ProxyClient(child_pipe, key_id, fpr,

2404

2351

2405

2352

while True:

2406

2353

if not client.enabled:

2407

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

2354

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

2355

client.name)

2408

2356

if self.server.use_dbus:

2409

2357

# Emit D-Bus signal

2410

2358

client.Rejected("Disabled")

2414

2362

# We are approved or approval is disabled

2415

2363

break

2416

2364

elif client.approved is None:

2417

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

2418

client.name)

2365

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

2366

client.name)

2419

2367

if self.server.use_dbus:

2420

2368

# Emit D-Bus signal

2421

2369

client.NeedApproval(

2422

2370

client.approval_delay.total_seconds()

2423

2371

* 1000, client.approved_by_default)

2424

2372

else:

2425

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

2426

client.name)

2373

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

2374

client.name)

2427

2375

if self.server.use_dbus:

2428

2376

# Emit D-Bus signal

2429

2377

client.Rejected("Denied")

2437

2385

time2 = datetime.datetime.now()

2438

2386

if (time2 - time) >= delay:

2439

2387

if not client.approved_by_default:

2440

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

2441

" waiting for approval",

2442

client.name)

2388

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

2389

" waiting for approval",

2390

client.name)

2443

2391

if self.server.use_dbus:

2444

2392

# Emit D-Bus signal

2445

2393

client.Rejected("Approval timed out")

2452

2400

try:

2453

2401

session.send(client.secret)

2454

2402

except gnutls.Error as error:

2455

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

2403

logger.warning("gnutls send failed",

2404

exc_info=error)

2456

2405

return

2457

2406

2458

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

2407

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

2459

2408

# bump the timeout using extended_timeout

2460

2409

client.bump_timeout(client.extended_timeout)

2461

2410

if self.server.use_dbus:

2468

2417

try:

2469

2418

session.bye()

2470

2419

except gnutls.Error as error:

2471

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

2420

logger.warning("GnuTLS bye failed",

2421

exc_info=error)

2472

2422

2473

2423

@staticmethod

2474

2424

def peer_certificate(session):

2475

2425

"Return the peer's certificate as a bytestring"

2476

2426

try:

2477

cert_type = gnutls.certificate_type_get2(

2478

session, gnutls.CTYPE_PEERS)

2427

cert_type = gnutls.certificate_type_get2(session._c_object,

2428

gnutls.CTYPE_PEERS)

2479

2429

except AttributeError:

2480

cert_type = gnutls.certificate_type_get(session)

2430

cert_type = gnutls.certificate_type_get(session._c_object)

2481

2431

if gnutls.has_rawpk:

2482

2432

valid_cert_types = frozenset((gnutls.CRT_RAWPK,))

2483

2433

else:

2484

2434

valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))

2485

2435

# If not a valid certificate type...

2486

2436

if cert_type not in valid_cert_types:

2487

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

2488

valid_cert_types)

2437

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

2438

valid_cert_types)

2489

2439

# ...return invalid data

2490

2440

return b""

2491

2441

list_size = ctypes.c_uint(1)

2492

2442

cert_list = (gnutls.certificate_get_peers

2493

(session, ctypes.byref(list_size)))

2443

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

2494

2444

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

2495

2445

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

2496

2446

if list_size.value == 0:

2518

2468

buf = ctypes.create_string_buffer(32)

2519

2469

buf_len = ctypes.c_size_t(len(buf))

2520

2470

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

2521

gnutls.pubkey_get_key_id(

2522

pubkey,

2523

gnutls.KEYID_USE_SHA256,

2524

ctypes.cast(ctypes.byref(buf),

2525

ctypes.POINTER(ctypes.c_ubyte)),

2526

ctypes.byref(buf_len))

2471

gnutls.pubkey_get_key_id(pubkey,

2472

gnutls.KEYID_USE_SHA256,

2473

ctypes.cast(ctypes.byref(buf),

2474

ctypes.POINTER(ctypes.c_ubyte)),

2475

ctypes.byref(buf_len))

2527

2476

# Deinit the certificate

2528

2477

gnutls.pubkey_deinit(pubkey)

2529

2478

2610

2559

2611

2560

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

2612

2561

socketserver.TCPServer):

2613

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

2562

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

2614

2563

2615

2564

Attributes:

2616

2565

enabled: Boolean; whether this server is activated yet

2667

2616

if SO_BINDTODEVICE is None:

2668

2617

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

2669

2618

# common enough.

2670

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

2619

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

2671

2620

SO_BINDTODEVICE = 25

2672

2621

try:

2673

2622

self.socket.setsockopt(

2675

2624

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

2676

2625

except socket.error as error:

2677

2626

if error.errno == errno.EPERM:

2678

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

2679

self.interface)

2627

logger.error("No permission to bind to"

2628

" interface %s", self.interface)

2680

2629

elif error.errno == errno.ENOPROTOOPT:

2681

log.error("SO_BINDTODEVICE not available; cannot"

2682

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

2630

logger.error("SO_BINDTODEVICE not available;"

2631

" cannot bind to interface %s",

2632

self.interface)

2683

2633

elif error.errno == errno.ENODEV:

2684

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

2685

" bind", self.interface)

2634

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

2635

" cannot bind", self.interface)

2686

2636

else:

2687

2637

raise

2688

2638

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

2767

2717

request = parent_pipe.recv()

2768

2718

command = request[0]

2769

2719

2770

if command == "init":

2720

if command == 'init':

2771

2721

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

2772

2722

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

2773

2723

address = request[3]

2774

2724

2775

2725

for c in self.clients.values():

2776

if key_id == ("E3B0C44298FC1C149AFBF4C8996FB924"

2777

"27AE41E4649B934CA495991B7852B855"):

2726

if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":

2778

2727

continue

2779

2728

if key_id and c.key_id == key_id:

2780

2729

client = c

2783

2732

client = c

2784

2733

break

2785

2734

else:

2786

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

2787

" %s", key_id or fpr, address)

2735

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

2736

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

2788

2737

if self.use_dbus:

2789

2738

# Emit D-Bus signal

2790

2739

mandos_dbus_service.ClientNotFound(key_id or fpr,

2803

2752

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

2804

2753

# same fileno

2805

2754

return False

2806

if command == "funcall":

2755

if command == 'funcall':

2807

2756

funcname = request[1]

2808

2757

args = request[2]

2809

2758

kwargs = request[3]

2810

2759

2811

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

2760

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

2812

2761

funcname)(*args,

2813

2762

**kwargs)))

2814

2763

2815

if command == "getattr":

2764

if command == 'getattr':

2816

2765

attrname = request[1]

2817

2766

if isinstance(client_object.__getattribute__(attrname),

2818

2767

collections.abc.Callable):

2819

parent_pipe.send(("function", ))

2768

parent_pipe.send(('function', ))

2820

2769

else:

2821

2770

parent_pipe.send((

2822

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

2771

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

2823

2772

2824

if command == "setattr":

2773

if command == 'setattr':

2825

2774

attrname = request[1]

2826

2775

value = request[2]

2827

2776

setattr(client_object, attrname, value)

2832

2781

def rfc3339_duration_to_delta(duration):

2833

2782

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

2834

2783

2835

>>> timedelta = datetime.timedelta

2836

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

2837

True

2838

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

2839

True

2840

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

2841

True

2842

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

2843

True

2844

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

2845

True

2846

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

2847

True

2848

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

2849

True

2850

>>> del timedelta

2784

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

2785

True

2786

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

2787

True

2788

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

2789

True

2790

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

2791

True

2792

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

2793

True

2794

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

2795

True

2796

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

2797

True

2851

2798

"""

2852

2799

2853

2800

# Parsing an RFC 3339 duration with regular expressions is not

2933

2880

def string_to_delta(interval):

2934

2881

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

2935

2882

2936

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

2937

True

2938

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

2939

True

2940

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

2941

True

2942

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

2943

True

2944

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

2945

True

2946

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

2883

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

2884

True

2885

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

2886

True

2887

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

2888

True

2889

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

2890

True

2891

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

2892

True

2893

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

2947

2894

True

2948

2895

"""

2949

2896

3153

3100

3154

3101

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

3155

3102

syslogger.setFormatter(

3156

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

3157

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

3103

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

3104

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

3158

3105

server_settings["servicename"])))

3159

3106

3160

3107

# Parse config file with clients

3184

3131

try:

3185

3132

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

3186

3133

except IOError as e:

3187

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

3188

exc_info=e)

3134

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

3135

exc_info=e)

3189

3136

3190

3137

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

3191

3138

("mandos", "mandos"),

3202

3149

try:

3203

3150

os.setgid(gid)

3204

3151

os.setuid(uid)

3205

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

3152

if debug:

3153

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

3154

gid))

3206

3155

except OSError as error:

3207

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

3208

os.strerror(error.errno))

3156

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

3157

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

3209

3158

if error.errno != errno.EPERM:

3210

3159

raise

3211

3160

3218

3167

3219

3168

@gnutls.log_func

3220

3169

def debug_gnutls(level, string):

3221

log.debug("GnuTLS: %s",

3222

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

3170

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

3223

3171

3224

3172

gnutls.global_set_log_function(debug_gnutls)

3225

3173

3243

3191

# From the Avahi example code

3244

3192

DBusGMainLoop(set_as_default=True)

3245

3193

main_loop = GLib.MainLoop()

3246

if use_dbus or zeroconf:

3247

bus = dbus.SystemBus()

3194

bus = dbus.SystemBus()

3248

3195

# End of Avahi example code

3249

3196

if use_dbus:

3250

3197

try:

3255

3202

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

3256

3203

do_not_queue=True)

3257

3204

except dbus.exceptions.DBusException as e:

3258

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

3205

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

3259

3206

use_dbus = False

3260

3207

server_settings["use_dbus"] = False

3261

3208

tcp_server.use_dbus = False

3346

3293

os.remove(stored_state_path)

3347

3294

except IOError as e:

3348

3295

if e.errno == errno.ENOENT:

3349

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

3350

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

3296

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

3297

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

3351

3298

else:

3352

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

3353

exc_info=e)

3299

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

3300

exc_info=e)

3354

3301

raise

3355

3302

except EOFError as e:

3356

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

3357

exc_info=e)

3303

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

3304

"EOFError:",

3305

exc_info=e)

3358

3306

3359

3307

with PGPEngine() as pgp:

3360

3308

for client_name, client in clients_data.items():

3387

3335

if client["enabled"]:

3388

3336

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

3389

3337

if not client["last_checked_ok"]:

3390

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

3391

" never performed a successful"

3392

" checker", client_name)

3338

logger.warning(

3339

"disabling client {} - Client never "

3340

"performed a successful checker".format(

3341

client_name))

3393

3342

client["enabled"] = False

3394

3343

elif client["last_checker_status"] != 0:

3395

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

3396

" last checker failed with error"

3397

" code %s", client_name,

3398

client["last_checker_status"])

3344

logger.warning(

3345

"disabling client {} - Client last"

3346

" checker failed with error code"

3347

" {}".format(

3348

client_name,

3349

client["last_checker_status"]))

3399

3350

client["enabled"] = False

3400

3351

else:

3401

3352

client["expires"] = (

3402

3353

datetime.datetime.utcnow()

3403

3354

+ client["timeout"])

3404

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

3405

" enabled", client_name)

3355

logger.debug("Last checker succeeded,"

3356

" keeping {} enabled".format(

3357

client_name))

3406

3358

try:

3407

3359

client["secret"] = pgp.decrypt(

3408

3360

client["encrypted_secret"],

3409

3361

client_settings[client_name]["secret"])

3410

3362

except PGPError:

3411

3363

# If decryption fails, we use secret from new settings

3412

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

3413

client_name)

3364

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

3365

client_name))

3414

3366

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

3415

3367

["secret"])

3416

3368

3430

3382

server_settings=server_settings)

3431

3383

3432

3384

if not tcp_server.clients:

3433

log.warning("No clients defined")

3385

logger.warning("No clients defined")

3434

3386

3435

3387

if not foreground:

3436

3388

if pidfile is not None:

3439

3391

with pidfile:

3440

3392

print(pid, file=pidfile)

3441

3393

except IOError:

3442

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

3443

pidfilename, pid)

3394

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

3395

pidfilename, pid)

3444

3396

del pidfile

3445

3397

del pidfilename

3446

3398

3596

3548

3597

3549

try:

3598

3550

with tempfile.NamedTemporaryFile(

3599

mode="wb",

3551

mode='wb',

3600

3552

suffix=".pickle",

3601

prefix="clients-",

3553

prefix='clients-',

3602

3554

dir=os.path.dirname(stored_state_path),

3603

3555

delete=False) as stored_state:

3604

3556

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

3612

3564

except NameError:

3613

3565

pass

3614

3566

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

3615

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

3616

os.strerror(e.errno))

3567

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

3568

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

3617

3569

else:

3618

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

3619

exc_info=e)

3570

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

3571

exc_info=e)

3620

3572

raise

3621

3573

3622

3574

# Delete all clients, and settings from config

3639

3591

mandos_dbus_service.client_added_signal(client)

3640

3592

# Need to initiate checking of clients

3641

3593

if client.enabled:

3642

client.init_checker(randomize_start=True)

3594

client.init_checker()

3643

3595

3644

3596

tcp_server.enable()

3645

3597

tcp_server.server_activate()

3648

3600

if zeroconf:

3649

3601

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

3650

3602

if use_ipv6:

3651

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

3652

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

3603

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

3604

" flowinfo %d, scope_id %d",

3605

*tcp_server.socket.getsockname())

3653

3606

else: # IPv4

3654

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

3655

*tcp_server.socket.getsockname())

3607

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

3608

*tcp_server.socket.getsockname())

3656

3609

3657

3610

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

3658

3611

3662

3615

try:

3663

3616

service.activate()

3664

3617

except dbus.exceptions.DBusException as error:

3665

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

3618

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

3666

3619

cleanup()

3667

3620

sys.exit(1)

3668

3621

# End of Avahi example code

3673

3626

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

3674

3627

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

3675

3628

3676

log.debug("Starting main loop")

3629

logger.debug("Starting main loop")

3677

3630

main_loop.run()

3678

3631

except AvahiError as error:

3679

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

3632

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

3680

3633

cleanup()

3681

3634

sys.exit(1)

3682

3635

except KeyboardInterrupt:

3683

3636

if debug:

3684

3637

print("", file=sys.stderr)

3685

log.debug("Server received KeyboardInterrupt")

3686

log.debug("Server exiting")

3638

logger.debug("Server received KeyboardInterrupt")

3639

logger.debug("Server exiting")

3687

3640

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

3688

3641

cleanup()

3689

3642

3690

3643

3691

def parse_test_args():

3692

# type: () -> argparse.Namespace

3644

def should_only_run_tests():

3693

3645

parser = argparse.ArgumentParser(add_help=False)

3694

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

3695

parser.add_argument("--prefix", )

3646

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

3696

3647

args, unknown_args = parser.parse_known_args()

3697

if args.check:

3698

# Remove test options from sys.argv

3648

run_tests = args.check

3649

if run_tests:

3650

# Remove --check argument from sys.argv

3699

3651

sys.argv[1:] = unknown_args

3700

return args

3652

return run_tests

3701

3653

3702

3654

# Add all tests from doctest strings

3703

3655

def load_tests(loader, tests, none):

3705

3657

tests.addTests(doctest.DocTestSuite())

3706

3658

return tests

3707

3659

3708

if __name__ == "__main__":

3709

options = parse_test_args()

3660

if __name__ == '__main__':

3710

3661

try:

3711

if options.check:

3712

extra_test_prefix = options.prefix

3713

if extra_test_prefix is not None:

3714

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

3715

.result.wasSuccessful()):

3716

sys.exit(1)

3717

class ExtraTestLoader(unittest.TestLoader):

3718

testMethodPrefix = extra_test_prefix

3719

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

3720

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

3721

else:

3722

unittest.main(argv=[""])

3662

if should_only_run_tests():

3663

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

3664

unittest.main()

3723

3665

else:

3724

3666

main()

3725

3667

finally:

3726

3668

logging.shutdown()

3727

3728

# Local Variables:

3729

# run-tests:

3730

# (lambda (&optional extra)

3731

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

3732

# extra))

3733

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

3734

# (funcall remove-test-window)

3735

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

3736

# run-tests-in-test-buffer:

3737

# (lambda (dir &optional extra)

3738

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

3739

# (setq buffer-read-only nil

3740

# default-directory dir)

3741

# (erase-buffer)

3742

# (compilation-mode))

3743

# (let ((process-result

3744

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

3745

# (process-file-shell-command

3746

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

3747

# (and (numberp process-result)

3748

# (= process-result 0))))

3749

# get-command-line:

3750

# (lambda (&optional extra)

3751

# (let ((quoted-script

3752

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

3753

# (format

3754

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

3755

# quoted-script)))

3756

# get-script-name:

3757

# (lambda ()

3758

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

3759

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

3760

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

3761

# (buffer-file-name))))

3762

# remove-test-window:

3763

# (lambda ()

3764

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

3765

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

3766

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

3767

# (lambda ()

3768

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

3769

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

3770

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

3771

# (display-buffer-overriding-action

3772

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

3773

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

3774

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

3775

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

3776

# eval:

3777

# (progn

3778

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

3779

# (funcall run-tests t)))

3780

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

3781

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

3782

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

3783

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

3784

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

3785

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

3786

# End: