/mandos/release : revision 237.7.751

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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 unittest

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import random

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import shlex

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import dbus

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import dbus.service

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if sys.version_info.major == 2:

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__metaclass__ = type

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str = unicode

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input = raw_input

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

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try:

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collections.abc = abc

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del abc

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# Add shlex.quote if it does not exist

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try:

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shlex.quote

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except AttributeError:

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shlex.quote = re.escape

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# Show warnings by default

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if not sys.warnoptions:

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import warnings

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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 = "1.8.9"

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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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404

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:

506

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

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

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else:

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

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

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def activate(self):

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

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class AvahiServiceToSyslog(AvahiService):

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

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

526

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

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**kwargs)

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

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syslogger.setFormatter(logging.Formatter(

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

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

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.format(self.name)))

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return ret

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OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h

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# Types

565

class _session_int(ctypes.Structure):

558

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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566

certificate_type_t = ctypes.c_int

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567

575

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class datum_t(ctypes.Structure):

576

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

577

("size", ctypes.c_uint)]

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

570

('size', ctypes.c_uint)]

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571

579

class _openpgp_crt_int(ctypes.Structure):

572

class openpgp_crt_int(ctypes.Structure):

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_fields_ = []

581

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:

596

message = gnutls.strerror(code).decode(

597

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

589

message = gnutls.strerror(code)

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

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591

message, *args)

600

592

601

593

class CertificateSecurityError(Error):

602

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pass

603

595

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

596

# Classes

630

class Credentials(With_from_param):

597

class Credentials:

631

598

def __init__(self):

632

self._as_parameter_ = gnutls.certificate_credentials_t()

633

gnutls.certificate_allocate_credentials(self)

599

self._c_object = gnutls.certificate_credentials_t()

600

gnutls.certificate_allocate_credentials(

601

ctypes.byref(self._c_object))

634

602

self.type = gnutls.CRD_CERTIFICATE

635

603

636

604

def __del__(self):

637

gnutls.certificate_free_credentials(self)

605

gnutls.certificate_free_credentials(self._c_object)

638

606

639

class ClientSession(With_from_param):

607

class ClientSession:

640

608

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

641

self._as_parameter_ = gnutls.session_t()

609

self._c_object = gnutls.session_t()

642

610

gnutls_flags = gnutls.CLIENT

643

611

if gnutls.check_version(b"3.5.6"):

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612

gnutls_flags |= gnutls.NO_TICKETS

645

613

if gnutls.has_rawpk:

646

614

gnutls_flags |= gnutls.ENABLE_RAWPK

647

gnutls.init(self, gnutls_flags)

615

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

648

616

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)

617

gnutls.set_default_priority(self._c_object)

618

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

619

gnutls.handshake_set_private_extensions(self._c_object,

620

True)

652

621

self.socket = socket

653

622

if credentials is None:

654

623

credentials = gnutls.Credentials()

655

gnutls.credentials_set(self, credentials.type,

656

credentials)

624

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

625

ctypes.cast(credentials._c_object,

626

ctypes.c_void_p))

657

627

self.credentials = credentials

658

628

659

629

def __del__(self):

660

gnutls.deinit(self)

630

gnutls.deinit(self._c_object)

661

631

662

632

def handshake(self):

663

return gnutls.handshake(self)

633

return gnutls.handshake(self._c_object)

664

634

665

635

def send(self, data):

666

636

data = bytes(data)

667

637

data_len = len(data)

668

638

while data_len > 0:

669

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

639

data_len -= gnutls.record_send(self._c_object,

640

data[-data_len:],

670

641

data_len)

671

642

672

643

def bye(self):

673

return gnutls.bye(self, gnutls.SHUT_RDWR)

644

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

674

645

675

646

# Error handling functions

676

647

def _error_code(result):

677

648

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

678

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

679

if result >= gnutls.E_SUCCESS:

649

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

650

if result >= 0:

680

651

return result

681

652

if result == gnutls.E_NO_CERTIFICATE_FOUND:

682

653

raise gnutls.CertificateSecurityError(code=result)

683

654

raise gnutls.Error(code=result)

684

655

685

def _retry_on_error(result, func, arguments,

686

_error_code=_error_code):

656

def _retry_on_error(result, func, arguments):

687

657

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

688

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

689

while result < gnutls.E_SUCCESS:

658

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

659

while result < 0:

690

660

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

691

661

return _error_code(result)

692

662

result = func(*arguments)

697

667

698

668

# Functions

699

669

priority_set_direct = _library.gnutls_priority_set_direct

700

priority_set_direct.argtypes = [ClientSession, ctypes.c_char_p,

670

priority_set_direct.argtypes = [session_t, ctypes.c_char_p,

701

671

ctypes.POINTER(ctypes.c_char_p)]

702

672

priority_set_direct.restype = _error_code

703

673

704

674

init = _library.gnutls_init

705

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

675

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

706

676

init.restype = _error_code

707

677

708

678

set_default_priority = _library.gnutls_set_default_priority

709

set_default_priority.argtypes = [ClientSession]

679

set_default_priority.argtypes = [session_t]

710

680

set_default_priority.restype = _error_code

711

681

712

682

record_send = _library.gnutls_record_send

713

record_send.argtypes = [ClientSession, ctypes.c_void_p,

683

record_send.argtypes = [session_t, ctypes.c_void_p,

714

684

ctypes.c_size_t]

715

685

record_send.restype = ctypes.c_ssize_t

716

686

record_send.errcheck = _retry_on_error

718

688

certificate_allocate_credentials = (

719

689

_library.gnutls_certificate_allocate_credentials)

720

690

certificate_allocate_credentials.argtypes = [

721

PointerTo(Credentials)]

691

ctypes.POINTER(certificate_credentials_t)]

722

692

certificate_allocate_credentials.restype = _error_code

723

693

724

694

certificate_free_credentials = (

725

695

_library.gnutls_certificate_free_credentials)

726

certificate_free_credentials.argtypes = [Credentials]

696

certificate_free_credentials.argtypes = [

697

certificate_credentials_t]

727

698

certificate_free_credentials.restype = None

728

699

729

700

handshake_set_private_extensions = (

730

701

_library.gnutls_handshake_set_private_extensions)

731

handshake_set_private_extensions.argtypes = [ClientSession,

702

handshake_set_private_extensions.argtypes = [session_t,

732

703

ctypes.c_int]

733

704

handshake_set_private_extensions.restype = None

734

705

735

706

credentials_set = _library.gnutls_credentials_set

736

credentials_set.argtypes = [ClientSession, credentials_type_t,

737

CastToVoidPointer(Credentials)]

707

credentials_set.argtypes = [session_t, credentials_type_t,

708

ctypes.c_void_p]

738

709

credentials_set.restype = _error_code

739

710

740

711

strerror = _library.gnutls_strerror

742

713

strerror.restype = ctypes.c_char_p

743

714

744

715

certificate_type_get = _library.gnutls_certificate_type_get

745

certificate_type_get.argtypes = [ClientSession]

716

certificate_type_get.argtypes = [session_t]

746

717

certificate_type_get.restype = _error_code

747

718

748

719

certificate_get_peers = _library.gnutls_certificate_get_peers

749

certificate_get_peers.argtypes = [ClientSession,

720

certificate_get_peers.argtypes = [session_t,

750

721

ctypes.POINTER(ctypes.c_uint)]

751

722

certificate_get_peers.restype = ctypes.POINTER(datum_t)

752

723

759

730

global_set_log_function.restype = None

760

731

761

732

deinit = _library.gnutls_deinit

762

deinit.argtypes = [ClientSession]

733

deinit.argtypes = [session_t]

763

734

deinit.restype = None

764

735

765

736

handshake = _library.gnutls_handshake

766

handshake.argtypes = [ClientSession]

767

handshake.restype = ctypes.c_int

737

handshake.argtypes = [session_t]

738

handshake.restype = _error_code

768

739

handshake.errcheck = _retry_on_error

769

740

770

741

transport_set_ptr = _library.gnutls_transport_set_ptr

771

transport_set_ptr.argtypes = [ClientSession, transport_ptr_t]

742

transport_set_ptr.argtypes = [session_t, transport_ptr_t]

772

743

transport_set_ptr.restype = None

773

744

774

745

bye = _library.gnutls_bye

775

bye.argtypes = [ClientSession, close_request_t]

776

bye.restype = ctypes.c_int

746

bye.argtypes = [session_t, close_request_t]

747

bye.restype = _error_code

777

748

bye.errcheck = _retry_on_error

778

749

779

750

check_version = _library.gnutls_check_version

796

767

797

768

x509_crt_fmt_t = ctypes.c_int

798

769

799

# All the function declarations below are from

800

# gnutls/abstract.h

770

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

801

771

pubkey_init = _library.gnutls_pubkey_init

802

772

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

803

773

pubkey_init.restype = _error_code

817

787

pubkey_deinit.argtypes = [pubkey_t]

818

788

pubkey_deinit.restype = None

819

789

else:

820

# All the function declarations below are from

821

# gnutls/openpgp.h

790

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

822

791

823

792

openpgp_crt_init = _library.gnutls_openpgp_crt_init

824

793

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

830

799

openpgp_crt_fmt_t]

831

800

openpgp_crt_import.restype = _error_code

832

801

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

]

802

openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self

803

openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,

804

ctypes.POINTER(ctypes.c_uint)]

840

805

openpgp_crt_verify_self.restype = _error_code

841

806

842

807

openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit

853

818

854

819

if check_version(b"3.6.4"):

855

820

certificate_type_get2 = _library.gnutls_certificate_type_get2

856

certificate_type_get2.argtypes = [ClientSession, ctypes.c_int]

821

certificate_type_get2.argtypes = [session_t, ctypes.c_int]

857

822

certificate_type_get2.restype = _error_code

858

823

859

824

# Remove non-public functions

875

840

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

876

841

877

842

Attributes:

878

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

843

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

879

844

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

880

845

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

881

846

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

882

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

847

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

883

848

running.

884

849

checker_callback_tag: a GLib event source tag, or None

885

850

checker_command: string; External command which is run to check

961

926

# key_id() and fingerprint() functions

962

927

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

963

928

.replace(" ", ""))

964

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

965

"").upper()

929

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

966

930

.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

931

if "secret" in section:

973

932

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

974

933

.encode("utf-8"),

1015

974

self.last_enabled = None

1016

975

self.expires = None

1017

976

1018

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

1019

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

1020

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

977

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

978

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

979

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

1021

980

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

1022

981

datetime.datetime.utcnow())

1023

982

1051

1010

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

1052

1011

# Already enabled

1053

1012

return

1013

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

1054

1014

self.enabled = True

1055

1015

self.last_enabled = datetime.datetime.utcnow()

1056

1016

self.init_checker()

1061

1021

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

1062

1022

return False

1063

1023

if not quiet:

1064

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

1024

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

1065

1025

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

1066

1026

GLib.source_remove(self.disable_initiator_tag)

1067

1027

self.disable_initiator_tag = None

1079

1039

def __del__(self):

1080

1040

self.disable()

1081

1041

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.

1042

def init_checker(self):

1043

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

1044

# and every interval from then on.

1087

1045

if self.checker_initiator_tag is not None:

1088

1046

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

1047

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

1048

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

1049

+ 1)),

1050

self.start_checker)

1051

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

1106

1052

if self.disable_initiator_tag is not None:

1107

1053

GLib.source_remove(self.disable_initiator_tag)

1108

1054

self.disable_initiator_tag = GLib.timeout_add(

1109

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

1110

self.disable)

1055

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

1056

# Also start a new checker *right now*.

1057

self.start_checker()

1111

1058

1112

1059

def checker_callback(self, source, condition, connection,

1113

1060

command):

1124

1071

self.last_checker_status = returncode

1125

1072

self.last_checker_signal = None

1126

1073

if self.last_checker_status == 0:

1127

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

1074

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

1075

vars(self))

1128

1076

self.checked_ok()

1129

1077

else:

1130

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

1078

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

1131

1079

else:

1132

1080

self.last_checker_status = -1

1133

1081

self.last_checker_signal = -returncode

1134

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

1082

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

1083

vars(self))

1135

1084

return False

1136

1085

1137

1086

def checked_ok(self):

1156

1105

def need_approval(self):

1157

1106

self.last_approval_request = datetime.datetime.utcnow()

1158

1107

1159

def start_checker(self, start_was_randomized=False):

1108

def start_checker(self):

1160

1109

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

1161

1110

1162

1111

If a checker already exists, leave it running and do

1171

1120

# should be.

1172

1121

1173

1122

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

1174

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

1123

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

1175

1124

self.checker.join()

1176

1125

self.checker = None

1177

1126

# Start a new checker if needed

1178

1127

if self.checker is None:

1179

1128

# Escape attributes for the shell

1180

1129

escaped_attrs = {

1181

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

1130

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

1182

1131

for attr in self.runtime_expansions}

1183

1132

try:

1184

1133

command = self.checker_command % escaped_attrs

1185

1134

except TypeError as error:

1186

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

1187

self.checker_command, exc_info=error)

1135

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

1136

self.checker_command,

1137

exc_info=error)

1188

1138

return True # Try again later

1189

1139

self.current_checker_command = command

1190

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

1140

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

1141

self.name)

1191

1142

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

1192

1143

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

1193

1144

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

1212

1163

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

1213

1164

GLib.PRIORITY_DEFAULT, GLib.IO_IN,

1214

1165

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

1166

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

1227

1167

return True

1228

1168

1233

1173

self.checker_callback_tag = None

1234

1174

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

1235

1175

return

1236

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

1176

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

1237

1177

self.checker.terminate()

1238

1178

self.checker = None

1239

1179

1266

1206

func._dbus_name = func.__name__

1267

1207

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

1268

1208

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

1269

func._dbus_get_args_options = {"byte_arrays": byte_arrays}

1209

func._dbus_get_args_options = {'byte_arrays': byte_arrays}

1270

1210

return func

1271

1211

1272

1212

return decorator

1361

1301

1362

1302

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1363

1303

out_signature="s",

1364

path_keyword="object_path",

1365

connection_keyword="connection")

1304

path_keyword='object_path',

1305

connection_keyword='connection')

1366

1306

def Introspect(self, object_path, connection):

1367

1307

"""Overloading of standard D-Bus method.

1368

1308

1417

1357

document.unlink()

1418

1358

except (AttributeError, xml.dom.DOMException,

1419

1359

xml.parsers.expat.ExpatError) as error:

1420

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

1421

exc_info=error)

1360

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

1361

exc_info=error)

1422

1362

return xmlstring

1423

1363

1424

1364

1521

1461

1522

1462

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1523

1463

out_signature="s",

1524

path_keyword="object_path",

1525

connection_keyword="connection")

1464

path_keyword='object_path',

1465

connection_keyword='connection')

1526

1466

def Introspect(self, object_path, connection):

1527

1467

"""Overloading of standard D-Bus method.

1528

1468

1584

1524

document.unlink()

1585

1525

except (AttributeError, xml.dom.DOMException,

1586

1526

xml.parsers.expat.ExpatError) as error:

1587

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

1588

exc_info=error)

1527

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

1528

exc_info=error)

1589

1529

return xmlstring

1590

1530

1591

1531

1623

1563

1624

1564

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1625

1565

out_signature="s",

1626

path_keyword="object_path",

1627

connection_keyword="connection")

1566

path_keyword='object_path',

1567

connection_keyword='connection')

1628

1568

def Introspect(self, object_path, connection):

1629

1569

"""Overloading of standard D-Bus method.

1630

1570

1655

1595

document.unlink()

1656

1596

except (AttributeError, xml.dom.DOMException,

1657

1597

xml.parsers.expat.ExpatError) as error:

1658

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

1659

exc_info=error)

1598

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

1599

exc_info=error)

1660

1600

return xmlstring

1661

1601

1662

1602

2296

2236

class ProxyClient:

2297

2237

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

2298

2238

self._pipe = child_pipe

2299

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

2239

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

2300

2240

if not self._pipe.recv():

2301

2241

raise KeyError(key_id or fpr)

2302

2242

2303

2243

def __getattribute__(self, name):

2304

if name == "_pipe":

2244

if name == '_pipe':

2305

2245

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

2306

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

2246

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

2307

2247

data = self._pipe.recv()

2308

if data[0] == "data":

2248

if data[0] == 'data':

2309

2249

return data[1]

2310

if data[0] == "function":

2250

if data[0] == 'function':

2311

2251

2312

2252

def func(*args, **kwargs):

2313

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

2253

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

2314

2254

return self._pipe.recv()[1]

2315

2255

2316

2256

return func

2317

2257

2318

2258

def __setattr__(self, name, value):

2319

if name == "_pipe":

2259

if name == '_pipe':

2320

2260

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

2321

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

2261

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

2322

2262

2323

2263

2324

2264

class ClientHandler(socketserver.BaseRequestHandler, object):

2329

2269

2330

2270

def handle(self):

2331

2271

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())

2272

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

2273

str(self.client_address))

2274

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

2275

self.server.child_pipe.fileno())

2335

2276

2336

2277

session = gnutls.ClientSession(self.request)

2337

2278

2338

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

2279

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

2339

2280

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

2340

2281

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

2341

2282

# "+DHE-DSS"))

2343

2284

priority = self.server.gnutls_priority

2344

2285

if priority is None:

2345

2286

priority = "NORMAL"

2346

gnutls.priority_set_direct(session,

2347

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

2287

gnutls.priority_set_direct(session._c_object,

2288

priority.encode("utf-8"),

2289

None)

2348

2290

2349

2291

# Start communication using the Mandos protocol

2350

2292

# Get protocol number

2351

2293

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

2352

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

2294

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

2353

2295

try:

2354

2296

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

2355

2297

raise RuntimeError(line)

2356

2298

except (ValueError, IndexError, RuntimeError) as error:

2357

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

2299

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

2358

2300

return

2359

2301

2360

2302

# Start GnuTLS connection

2361

2303

try:

2362

2304

session.handshake()

2363

2305

except gnutls.Error as error:

2364

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

2306

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

2365

2307

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

2366

2308

# established. Just abandon the request.

2367

2309

return

2368

log.debug("Handshake succeeded")

2310

logger.debug("Handshake succeeded")

2369

2311

2370

2312

approval_required = False

2371

2313

try:

2375

2317

key_id = self.key_id(

2376

2318

self.peer_certificate(session))

2377

2319

except (TypeError, gnutls.Error) as error:

2378

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

2320

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

2379

2321

return

2380

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

2381

key_id.decode("utf-8",

2382

errors="replace"))

2322

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

2383

2323

2384

2324

else:

2385

2325

key_id = b""

2387

2327

fpr = self.fingerprint(

2388

2328

self.peer_certificate(session))

2389

2329

except (TypeError, gnutls.Error) as error:

2390

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

2330

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

2391

2331

return

2392

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

2332

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

2393

2333

2394

2334

try:

2395

2335

client = ProxyClient(child_pipe, key_id, fpr,

2404

2344

2405

2345

while True:

2406

2346

if not client.enabled:

2407

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

2347

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

2348

client.name)

2408

2349

if self.server.use_dbus:

2409

2350

# Emit D-Bus signal

2410

2351

client.Rejected("Disabled")

2414

2355

# We are approved or approval is disabled

2415

2356

break

2416

2357

elif client.approved is None:

2417

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

2418

client.name)

2358

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

2359

client.name)

2419

2360

if self.server.use_dbus:

2420

2361

# Emit D-Bus signal

2421

2362

client.NeedApproval(

2422

2363

client.approval_delay.total_seconds()

2423

2364

* 1000, client.approved_by_default)

2424

2365

else:

2425

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

2426

client.name)

2366

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

2367

client.name)

2427

2368

if self.server.use_dbus:

2428

2369

# Emit D-Bus signal

2429

2370

client.Rejected("Denied")

2437

2378

time2 = datetime.datetime.now()

2438

2379

if (time2 - time) >= delay:

2439

2380

if not client.approved_by_default:

2440

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

2441

" waiting for approval",

2442

client.name)

2381

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

2382

" waiting for approval",

2383

client.name)

2443

2384

if self.server.use_dbus:

2444

2385

# Emit D-Bus signal

2445

2386

client.Rejected("Approval timed out")

2452

2393

try:

2453

2394

session.send(client.secret)

2454

2395

except gnutls.Error as error:

2455

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

2396

logger.warning("gnutls send failed",

2397

exc_info=error)

2456

2398

return

2457

2399

2458

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

2400

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

2459

2401

# bump the timeout using extended_timeout

2460

2402

client.bump_timeout(client.extended_timeout)

2461

2403

if self.server.use_dbus:

2468

2410

try:

2469

2411

session.bye()

2470

2412

except gnutls.Error as error:

2471

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

2413

logger.warning("GnuTLS bye failed",

2414

exc_info=error)

2472

2415

2473

2416

@staticmethod

2474

2417

def peer_certificate(session):

2475

2418

"Return the peer's certificate as a bytestring"

2476

2419

try:

2477

cert_type = gnutls.certificate_type_get2(

2478

session, gnutls.CTYPE_PEERS)

2420

cert_type = gnutls.certificate_type_get2(session._c_object,

2421

gnutls.CTYPE_PEERS)

2479

2422

except AttributeError:

2480

cert_type = gnutls.certificate_type_get(session)

2423

cert_type = gnutls.certificate_type_get(session._c_object)

2481

2424

if gnutls.has_rawpk:

2482

2425

valid_cert_types = frozenset((gnutls.CRT_RAWPK,))

2483

2426

else:

2484

2427

valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))

2485

2428

# If not a valid certificate type...

2486

2429

if cert_type not in valid_cert_types:

2487

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

2488

valid_cert_types)

2430

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

2431

valid_cert_types)

2489

2432

# ...return invalid data

2490

2433

return b""

2491

2434

list_size = ctypes.c_uint(1)

2492

2435

cert_list = (gnutls.certificate_get_peers

2493

(session, ctypes.byref(list_size)))

2436

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

2494

2437

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

2495

2438

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

2496

2439

if list_size.value == 0:

2518

2461

buf = ctypes.create_string_buffer(32)

2519

2462

buf_len = ctypes.c_size_t(len(buf))

2520

2463

# 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))

2464

gnutls.pubkey_get_key_id(pubkey,

2465

gnutls.KEYID_USE_SHA256,

2466

ctypes.cast(ctypes.byref(buf),

2467

ctypes.POINTER(ctypes.c_ubyte)),

2468

ctypes.byref(buf_len))

2527

2469

# Deinit the certificate

2528

2470

gnutls.pubkey_deinit(pubkey)

2529

2471

2610

2552

2611

2553

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

2612

2554

socketserver.TCPServer):

2613

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

2555

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

2614

2556

2615

2557

Attributes:

2616

2558

enabled: Boolean; whether this server is activated yet

2667

2609

if SO_BINDTODEVICE is None:

2668

2610

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

2669

2611

# common enough.

2670

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

2612

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

2671

2613

SO_BINDTODEVICE = 25

2672

2614

try:

2673

2615

self.socket.setsockopt(

2675

2617

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

2676

2618

except socket.error as error:

2677

2619

if error.errno == errno.EPERM:

2678

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

2679

self.interface)

2620

logger.error("No permission to bind to"

2621

" interface %s", self.interface)

2680

2622

elif error.errno == errno.ENOPROTOOPT:

2681

log.error("SO_BINDTODEVICE not available; cannot"

2682

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

2623

logger.error("SO_BINDTODEVICE not available;"

2624

" cannot bind to interface %s",

2625

self.interface)

2683

2626

elif error.errno == errno.ENODEV:

2684

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

2685

" bind", self.interface)

2627

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

2628

" cannot bind", self.interface)

2686

2629

else:

2687

2630

raise

2688

2631

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

2767

2710

request = parent_pipe.recv()

2768

2711

command = request[0]

2769

2712

2770

if command == "init":

2713

if command == 'init':

2771

2714

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

2772

2715

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

2773

2716

address = request[3]

2774

2717

2775

2718

for c in self.clients.values():

2776

if key_id == ("E3B0C44298FC1C149AFBF4C8996FB924"

2777

"27AE41E4649B934CA495991B7852B855"):

2719

if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":

2778

2720

continue

2779

2721

if key_id and c.key_id == key_id:

2780

2722

client = c

2783

2725

client = c

2784

2726

break

2785

2727

else:

2786

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

2787

" %s", key_id or fpr, address)

2728

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

2729

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

2788

2730

if self.use_dbus:

2789

2731

# Emit D-Bus signal

2790

2732

mandos_dbus_service.ClientNotFound(key_id or fpr,

2803

2745

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

2804

2746

# same fileno

2805

2747

return False

2806

if command == "funcall":

2748

if command == 'funcall':

2807

2749

funcname = request[1]

2808

2750

args = request[2]

2809

2751

kwargs = request[3]

2810

2752

2811

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

2753

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

2812

2754

funcname)(*args,

2813

2755

**kwargs)))

2814

2756

2815

if command == "getattr":

2757

if command == 'getattr':

2816

2758

attrname = request[1]

2817

2759

if isinstance(client_object.__getattribute__(attrname),

2818

2760

collections.abc.Callable):

2819

parent_pipe.send(("function", ))

2761

parent_pipe.send(('function', ))

2820

2762

else:

2821

2763

parent_pipe.send((

2822

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

2764

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

2823

2765

2824

if command == "setattr":

2766

if command == 'setattr':

2825

2767

attrname = request[1]

2826

2768

value = request[2]

2827

2769

setattr(client_object, attrname, value)

2832

2774

def rfc3339_duration_to_delta(duration):

2833

2775

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

2834

2776

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

2777

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

2778

True

2779

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

2780

True

2781

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

2782

True

2783

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

2784

True

2785

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

2786

True

2787

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

2788

True

2789

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

2790

True

2851

2791

"""

2852

2792

2853

2793

# Parsing an RFC 3339 duration with regular expressions is not

2933

2873

def string_to_delta(interval):

2934

2874

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

2935

2875

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)

2876

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

2877

True

2878

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

2879

True

2880

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

2881

True

2882

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

2883

True

2884

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

2885

True

2886

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

2947

2887

True

2948

2888

"""

2949

2889

3153

3093

3154

3094

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

3155

3095

syslogger.setFormatter(

3156

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

3157

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

3096

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

3097

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

3158

3098

server_settings["servicename"])))

3159

3099

3160

3100

# Parse config file with clients

3184

3124

try:

3185

3125

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

3186

3126

except IOError as e:

3187

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

3188

exc_info=e)

3127

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

3128

exc_info=e)

3189

3129

3190

3130

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

3191

3131

("mandos", "mandos"),

3202

3142

try:

3203

3143

os.setgid(gid)

3204

3144

os.setuid(uid)

3205

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

3145

if debug:

3146

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

3147

gid))

3206

3148

except OSError as error:

3207

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

3208

os.strerror(error.errno))

3149

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

3150

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

3209

3151

if error.errno != errno.EPERM:

3210

3152

raise

3211

3153

3218

3160

3219

3161

@gnutls.log_func

3220

3162

def debug_gnutls(level, string):

3221

log.debug("GnuTLS: %s",

3222

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

3163

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

3223

3164

3224

3165

gnutls.global_set_log_function(debug_gnutls)

3225

3166

3243

3184

# From the Avahi example code

3244

3185

DBusGMainLoop(set_as_default=True)

3245

3186

main_loop = GLib.MainLoop()

3246

if use_dbus or zeroconf:

3247

bus = dbus.SystemBus()

3187

bus = dbus.SystemBus()

3248

3188

# End of Avahi example code

3249

3189

if use_dbus:

3250

3190

try:

3255

3195

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

3256

3196

do_not_queue=True)

3257

3197

except dbus.exceptions.DBusException as e:

3258

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

3198

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

3259

3199

use_dbus = False

3260

3200

server_settings["use_dbus"] = False

3261

3201

tcp_server.use_dbus = False

3346

3286

os.remove(stored_state_path)

3347

3287

except IOError as e:

3348

3288

if e.errno == errno.ENOENT:

3349

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

3350

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

3289

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

3290

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

3351

3291

else:

3352

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

3353

exc_info=e)

3292

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

3293

exc_info=e)

3354

3294

raise

3355

3295

except EOFError as e:

3356

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

3357

exc_info=e)

3296

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

3297

"EOFError:",

3298

exc_info=e)

3358

3299

3359

3300

with PGPEngine() as pgp:

3360

3301

for client_name, client in clients_data.items():

3387

3328

if client["enabled"]:

3388

3329

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

3389

3330

if not client["last_checked_ok"]:

3390

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

3391

" never performed a successful"

3392

" checker", client_name)

3331

logger.warning(

3332

"disabling client {} - Client never "

3333

"performed a successful checker".format(

3334

client_name))

3393

3335

client["enabled"] = False

3394

3336

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"])

3337

logger.warning(

3338

"disabling client {} - Client last"

3339

" checker failed with error code"

3340

" {}".format(

3341

client_name,

3342

client["last_checker_status"]))

3399

3343

client["enabled"] = False

3400

3344

else:

3401

3345

client["expires"] = (

3402

3346

datetime.datetime.utcnow()

3403

3347

+ client["timeout"])

3404

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

3405

" enabled", client_name)

3348

logger.debug("Last checker succeeded,"

3349

" keeping {} enabled".format(

3350

client_name))

3406

3351

try:

3407

3352

client["secret"] = pgp.decrypt(

3408

3353

client["encrypted_secret"],

3409

3354

client_settings[client_name]["secret"])

3410

3355

except PGPError:

3411

3356

# If decryption fails, we use secret from new settings

3412

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

3413

client_name)

3357

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

3358

client_name))

3414

3359

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

3415

3360

["secret"])

3416

3361

3430

3375

server_settings=server_settings)

3431

3376

3432

3377

if not tcp_server.clients:

3433

log.warning("No clients defined")

3378

logger.warning("No clients defined")

3434

3379

3435

3380

if not foreground:

3436

3381

if pidfile is not None:

3439

3384

with pidfile:

3440

3385

print(pid, file=pidfile)

3441

3386

except IOError:

3442

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

3443

pidfilename, pid)

3387

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

3388

pidfilename, pid)

3444

3389

del pidfile

3445

3390

del pidfilename

3446

3391

3596

3541

3597

3542

try:

3598

3543

with tempfile.NamedTemporaryFile(

3599

mode="wb",

3544

mode='wb',

3600

3545

suffix=".pickle",

3601

prefix="clients-",

3546

prefix='clients-',

3602

3547

dir=os.path.dirname(stored_state_path),

3603

3548

delete=False) as stored_state:

3604

3549

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

3612

3557

except NameError:

3613

3558

pass

3614

3559

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

3615

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

3616

os.strerror(e.errno))

3560

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

3561

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

3617

3562

else:

3618

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

3619

exc_info=e)

3563

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

3564

exc_info=e)

3620

3565

raise

3621

3566

3622

3567

# Delete all clients, and settings from config

3639

3584

mandos_dbus_service.client_added_signal(client)

3640

3585

# Need to initiate checking of clients

3641

3586

if client.enabled:

3642

client.init_checker(randomize_start=True)

3587

client.init_checker()

3643

3588

3644

3589

tcp_server.enable()

3645

3590

tcp_server.server_activate()

3648

3593

if zeroconf:

3649

3594

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

3650

3595

if use_ipv6:

3651

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

3652

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

3596

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

3597

" flowinfo %d, scope_id %d",

3598

*tcp_server.socket.getsockname())

3653

3599

else: # IPv4

3654

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

3655

*tcp_server.socket.getsockname())

3600

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

3601

*tcp_server.socket.getsockname())

3656

3602

3657

3603

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

3658

3604

3662

3608

try:

3663

3609

service.activate()

3664

3610

except dbus.exceptions.DBusException as error:

3665

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

3611

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

3666

3612

cleanup()

3667

3613

sys.exit(1)

3668

3614

# End of Avahi example code

3673

3619

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

3674

3620

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

3675

3621

3676

log.debug("Starting main loop")

3622

logger.debug("Starting main loop")

3677

3623

main_loop.run()

3678

3624

except AvahiError as error:

3679

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

3625

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

3680

3626

cleanup()

3681

3627

sys.exit(1)

3682

3628

except KeyboardInterrupt:

3683

3629

if debug:

3684

3630

print("", file=sys.stderr)

3685

log.debug("Server received KeyboardInterrupt")

3686

log.debug("Server exiting")

3631

logger.debug("Server received KeyboardInterrupt")

3632

logger.debug("Server exiting")

3687

3633

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

3688

3634

cleanup()

3689

3635

3690

3636

3691

def parse_test_args():

3692

# type: () -> argparse.Namespace

3637

def should_only_run_tests():

3693

3638

parser = argparse.ArgumentParser(add_help=False)

3694

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

3695

parser.add_argument("--prefix", )

3639

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

3696

3640

args, unknown_args = parser.parse_known_args()

3697

if args.check:

3698

# Remove test options from sys.argv

3641

run_tests = args.check

3642

if run_tests:

3643

# Remove --check argument from sys.argv

3699

3644

sys.argv[1:] = unknown_args

3700

return args

3645

return run_tests

3701

3646

3702

3647

# Add all tests from doctest strings

3703

3648

def load_tests(loader, tests, none):

3705

3650

tests.addTests(doctest.DocTestSuite())

3706

3651

return tests

3707

3652

3708

if __name__ == "__main__":

3709

options = parse_test_args()

3653

if __name__ == '__main__':

3710

3654

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=[""])

3655

if should_only_run_tests():

3656

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

3657

unittest.main()

3723

3658

else:

3724

3659

main()

3725

3660

finally:

3726

3661

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: